DRC-2023-069754 - 0901a06881254f4f

August 8, 2023
Sent VIA EXPEDITED DELIVERY
Mr. Doug Hansen Director Division of Waste Management and Radiation Control Utah Department of Environmental Quality
195 North 1950 West Salt Lake City, UT 84116
Energy Fuels Resources (USA) Inc. 225 Union Blvd. Suite 600
Lakewood, CO, US, 80228 303 974 2140 w,, w.energ, fuels. om
Dr .. ' r"Jr \' 3 anJ KaJ Al f "'�"3 I '- ...
Re: Transmittal of 2nd Quarter 2023 Routine Chloroform Monitoring Report UDEQ Docket No. UGW-20-01 White Mesa Uranium Mill
Dear Mr. Hansen:
Enclosed are two copies of the White Mesa Uranium Mill Chloroform Monitoring Report for the 2nd Quarter of 2023 as required by the Stipulation and Consent Order, UDEQ Docket No. UGW-20-0 I as well as two CDs, that each contains a word searchable electronic copy of the report.
If you should have any questions regarding this report please contact me.
Yours very truly,
ENERGY FUELS RESOURCES (USA) INC.Kathy Weinel Director, Regulatory Compliance
CC: David Frydenlund Logan Shumway Scott Bakken Garrin Palmer Jordan App Dawn Kolkman John Uhrie
DRC-2023-069754
August 8, 2023
Sent VIA EXPEDITED DELIVERY
Mr. Doug Hansen
Director
Division of Waste Management and Radiation Control
Utah Department of Environmental Quality
195 North 1950 West
Salt Lake City, UT 84116
Energy Fuels Resources (USA) Inc.
225 Union Blvd. Suite 600
Lakewood, CO, US, 80228
303 974 2140
www.energ fuels.com
Re: Transmittal of 2nd Quarter 2023 Routine Chloroform Monitoring Report
UDEQ Docket No. UGW-20-01 White Mesa Uranium Mill
Dear Mr. Hansen:
Enclosed are two copies of the White Mesa Uranium Mill Chloroform Monitoring Report for the 2nd Quarter of
2023 as required by the Stipulation and Consent Order, UDEQ Docket No. UGW-20-01 as well as two CDs, that
each contains a word searchable electronic copy of the report.
If you should have any questions regarding this report please contact me.
Yours very truly,
ENERGY FUELS RESOURCES (USA) INC.
Kathy Weinel
Director, Regulatory Compliance
CC: David Frydenlund
Logan Shumway
Scott Bakken
Garrin Palmer
Jordan App
Dawn Kolkman
John Uhrie
White Mesa Uranium Mill
Chloroform Monitoring Report
State of Utah
Stipulation and Consent Order Docket No. UGW-20-01
(April through June)
2023
Prepared by:
Energy Fuels Resources (USA) Inc.
225 Union Boulevard, Suite 600
Lakewood, CO 80228
August 7, 2023
TABLE OF CONTENTS
1.0 INTRODUCTION ................................................................................................. 1
2.0 CHLOROFORM MONITORING ....................................................................... 1
2.1 Samples and Measurements Taken During the Quarter ...................................... 1
2.1.1 Chloroform Monitoring ............................................................................... 1
2.1.2 Parameters Analyzed ................................................................................... 2
2.1.3 Groundwater Head Monitoring .................................................................... 2
2.2 Sampling Methodology and Equipment and Decontamination Procedures ........ 3
2.2.1 Decontamination Procedures ....................................................................... 3
2.2.2 Well Purging and Depth to Groundwater ................................................... .4
2.2.3 Sample Collection ........................................................................................ 5
2.3 Field Data ............................................................................................................. 5
2.4 Depth to Groundwater Data and Water Table Contour Map ............................... 6
2.5 Laboratory Results ............................................................................................... 6
2.5.1 Copy of Laboratory Results ......................................................................... 6
2.5.2 Regulatory Framework ................................................................................ 6
3.0 QUALITY ASSURANCE AND DATA VALIDATION .................................... 6
3 .1 Field QC Samples ................................................................................................ 7
3.2 Adherence to Mill Sampling SOPs ...................................................................... 7
3 .3 Analyte Completeness Review ............................................................................ 7
3 .4 Data Validation .................................................................................................... 7
3.4.1 Field Data QA/QC Evaluation ..................................................................... 8
3.4.2 Holding Time Evaluation ............................................................................ 9
3.4.3 Receipt Temperature Evaluation ................................................................. 9
3.4.4 Analytical Method Checklist ....................................................................... 9
3.4.5 Reporting Limit Evaluation ......................................................................... 9
3.4.6 Receipt pH Evaluation ............................................................................... 10
3.4.7 Trip Blank Evaluation ................................................................................ 10
3 .4.8 QA/QC Evaluation for Sample Duplicates ................................................ 10
3.4.9 Rinsate Sample Check ............................................................................... 10
3.4.10 Other Laboratory QA/QC .......................................................................... 11
4.0 INTERPRETATION OF DATA ........................................................................ 12
4.1 Interpretation of Groundwater Levels, Gradients and Flow Directions ............ 12
4.1.1 Current Site Groundwater Contour Map ................................................... 12
4.1.2 Comparison of Current Groundwater Contour Maps to Groundwater
Contour Maps for Previous Quarter ......................................................... 20
4.1.3 Hydrographs .............................................................................................. 21
4.1.4 Depth to Groundwater Measured and Groundwater Elevation ................. 21
4.1.5 Evaluation of the Effectiveness of Hydraulic Capture ............................. 2 l
4.2 Review of Analytical Results ............................................................................ 26
4.2.1 Current Chloroform Isoconcentration Map ............................................... 26
4.2.2 Chloroform Concentration Trend Data and Graphs .................................. 26
4.2.3 Interpretation of Analytical Data ............................................................... 26
5.0 LONG TERM PUMP TEST AT MW-4, MW-26, TW4-19, TW4-20, AND
TW4-4 OPERATIONS REPORT ...................................................................... 30
5.1 Introduction ........................................................................................................ 30
5.2 Pump Test Data Collection ................................................................................ 31
5.3 Water Level Measurements ............................................................................... 31
5.4 Pumping Rates and Volumes ............................................................................. 32
5.5 Mass Removed and Plume Residual Mass ........................................................ 32
5.6 Inspections ......................................................................................................... 33
5.7 Conditions That May Affect Water Levels in Piezometers ............................... 33
6.0 CORRECTIVE ACTION REPORT .................................................................. 33
6.1 Assessment of Previous Quarter's Corrective Actions ...................................... 33
7.0 CURRENT COMPLIANCE STATUS .............................................................. 33
7.1 Long Term Chloroform Plume Control.. ........................................................... 33
7.2 Well Construction, Maintenance and Operation ............................................... 34
7.3 Disposal of Extracted Groundwater ................................................................... 35
7.4 Compliance Well Performance .......................................................................... 35
7.5 Chloroform Plume Monitoring for Wells within 500 Feet of the Property
Boundary ........................................................................................................... 35
8.0 CONCLUSIONS AND RECOMMENDATIONS ............................................ 35
9.0 ELECTRONIC DATA FILES AND FORMAT .............................................. .41
10.0 SIGNATURE AND CERTIFICATION ............................................................ 42
LIST OF TABLES
Table 1 Summary of Wells Sampling for the Period
11
INDEX OF TABS
Tab A Site Plan and Perched Well Locations White Mesa Site
Tab B Order of Sampling and Field Data Worksheets
Tab C Weekly and Monthly Depth to Water Data
Tab D Kriged Current Quarter Groundwater Contour Map, Capture Zone Map, Capture
Zone Details Map and Depth to Water Data
Tab E Kriged Previous Quarter Groundwater Contour Map
Tab F Depths to Groundwater and Elevations and Hydrographs of Groundwater
Elevations over Time for Chloroform Monitoring Wells
Tab G Chloroform Mass Removed and Volume Pumped in Chloroform Pumping Wells
over Time
Tab H Laboratory Analytical Reports
Tab I Quality Assurance and Data Validation Tables
I-1 Field Data QA/QC Evaluation
I-2 Holding Time Evaluation
I-3 Receipt Temperature Check
I-4 Analytical Method Check
I-5 Reporting Limit Evaluation
I-6 Trip Blank Evaluations
I-7 QA/QC Evaluation for Sample Duplicates
I-8 QC Control Limits for Analyses and Blanks
I-9 Rinsate Check
Tab J Kriged Current Quarter Chloroform Isoconcentration Map
Tab K Analyte Concentration Data and Chloroform Concentration Trend Graphs over
Time
Tab L Contour Map Based Chloroform Plume Mass Calculations and Data Over Time
Tab M CSV Transmittal Letter
Tab N Exceedance Notices for the Reporting Period
111
1.0 INTRODUCTION
The presence of chloroform was initially identified in groundwater at the White Mesa Mill (the
"Mill") as a result of split sampling performed in May 1999. The discovery resulted in the
issuance of State of Utah Notice of Violation ("NOV") and Groundwater Corrective Action
Order ("CAO") State of Utah Department of Environmental Quality ("UDEQ"), Division of
Waste Management and Radiation Control ("DWMRC") Docket No. UGW-20-01, which
required that Energy Fuels Resources (USA) Inc. ("EFRJ") submit a Contamination Investigation
Plan and Report pursuant to the provisions of UAC R317-6-6.15(D). In response to the NOV,
EFRJ submitted a series of documents outlining plans for investigation of the chloroform
contamination. This plan of action and preliminary schedule was set out in EFRI submittals
dated: September 20, 1999; June 30, 2000; April 14, 2005; and November 29, 2006. EFRJ
submitted a draft Groundwater Corrective Action Plan ("GCAP") dated August 22, 2007. The
draft GCAP was reviewed by the Director, who advised EFRJ in 2013 that modifications were
required. In an effort to expedite and formalize active and continued remediation of the
chloroform plume, both parties have agreed to the GCAP found in Attachment 1, of the final
Stipulation and Consent Order ("SCO") dated September 14, 2015.
This is the Quarterly Chloroform Monitoring Report for the second quarter of 2023 as required
under the SCO. This report also includes the Operations Report for MW-04, TW4-0l, TW4-04,
TW4-02, TW4-ll, TW4-19, TW4-21, MW-26, TW4-22, TW4-24, TW4-25, TW4-37, TW4-39,
TW 4-40, and TW 4-41 for the quarter.
2.0 CHLOROFORM MONITORING
2.1 Samples and Measurements Taken During the Quarter
A map showing the location of all groundwater monitoring wells, piezometers, existing wells,
temporary chloroform contaminant investigation wells and temporary nitrate investigation wells
is attached under Tab A. Chloroform samples and measurements taken during this reporting
period are discussed in the remainder of this section.
2.1.1 Chloroform Monitoring
Quarterly sampling for chloroform monitoring parameters is currently required in the following
wells:
MW-4 TW4-9 TW4-18 TW4-28 TW4-37
TW4-l TW4-10 TW4-19 TW4-29 TW4-38
TW4-2 TW4-l l TW4-21 TW4-30 TW4-39
TW4-3 TW4-12 TW4-22 TW4-31 TW4-40
TW4-4 TW4-13 TW4-23 TW4-32 TW4-41
TW4-5 TW4-14 TW4-24 TW4-33 TW4-42
TW4-6 MW-26 (formerly TW4-15) TW4-25 TW4-34 TW4-43
TW4-7 TW4-16 TW4-26 TW4-35
TW4-8 MW-32 (formerly TW4-l 7) TW4-27 TW4-36
1
Chloroform monitoring was performed in all of the required chloroform monitoring wells. Table
1 provides an overview of all wells sampled during the quarter, along with the date samples were
collected from each well, and the date(s) when analytical data were received from the contract
laboratory. Table 1 also identifies equipment rinsate samples collected, as well as sample
numbers associated with the deionized field blank ("DIFB") and any required duplicates.
2.1.2 Parameters Analyzed
Wells sampled during this reporting period were analyzed for the following constituents:
• Chloroform
• Chloromethane
• Carbon tetrachloride
• Methylene chloride
• Chloride
• Nitrate plus Nitrite as Nitrogen
Use of analytical methods is consistent with the requirements of the Chloroform Investigation
Monitoring Quality Assurance Program (the "Chloroform QAP") attached as Appendix A to the
White Mesa Uranium Mill Groundwater Monitoring QAP Revision 7.7, dated February 15,
2022.
2.1.3 Groundwater Head Monitoring
Depth to groundwater was measured in the following wells and/or piezometers, pursuant to Part
I.E.3 of the Groundwater Discharge Permit (the "GWDP"):
• The quarterly groundwater compliance monitoring wells
• Existing monitoring well MW-4 and all of the temporary chloroform investigation wells
• Piezometers P-1, P-2, P-3A, P-4 and P-5
• MW-20 and MW-22
• Nitrate monitoring wells
• The DR piezometers that were installed during the Southwest Hydrologic Investigation
In addition to the above, depth to water measurements are routinely observed in conjunction with
sampling events for all wells sampled during quarterly and accelerated efforts, regardless of the
sampling purpose.
Weekly and monthly depth to groundwater measurements were taken in the chloroform pumping
wells MW-4, MW-26, TW4-1, TW4-2, TW4-4, TW4-11, TW4-19, TW4-21, TW4-37, TW4-39,
TW4-40, and TW4-41 and the nitrate pumping wells TW4-22, TW4-24, TW4-25, and TWN-02.
In addition, monthly water level measurements were taken in non-pumping wells TW4-3 through
TW4-10, TW4-12 through TW4-14, TW4-16, TW4-18, TW4-26 through TW4-36, TW4-38,
TW4-42, TW4-43, MW-27, MW-30, MW-31, TWN-1, TWN-3, TWN-4, TWN-7, and TWN-18.
2
2.2 Sampling Methodology and Equipment and Decontamination Procedures
EFRI completed, and transmitted to DWMRC on May 25, 2006, a revised QAP for sampling
under the Mill's GWDP. While the water sampling conducted for chloroform investigation
purposes has conformed to the general principles set out in the QAP, some of the requirements in
the QAP were not fully implemented prior to DWMRC's approval of the QAP, for reasons set
out in correspondence to DWMRC dated December 8, 2006. Subsequent to the delivery of the
December 8, 2006 letter, EFRI discussed the issues brought forward in the letter with DWMRC
and has received correspondence from DWMRC about those issues. In response to DWMRC's
letter and subsequent discussions with DWMRC, EFRl modified the chloroform Quality
Assurance ("QA") procedures within the Chloroform QAP. The Chloroform QAP describes the
requirements of the chloroform investigation program and identifies where they differ from the
Groundwater QAP. On June 20, 2009 the Chloroform QAP was modified to require that the
quarterly chloroform reports include additional items specific to EFRI' s ongoing pump testing
and chloroform capture efforts. The Groundwater QAP as well as the Chloroform QAP were
revised again on June 6, 2012, August 15, 2017, July 23, 2018, May 14, 2019, August 22, 2019,
and February 15, 2022. The revised Groundwater QAP and Chloroform QAP, Revision 7.7 was
approved by DWMRC on March 31, 2022.
The sampling methodology, equipment and decontamination procedures used in the chloroform
contaminant investigation, as summarized below, are consistent with the approved QAP and the
Chloroform QAP.
2.2.1 Decontamination Procedures
Non-dedicated sampling equipment is decontaminated prior to use as described in the DWMRC-
approved QAP and as summarized below.
The water level meter is decontaminated with a detergent/deionized ("DI") water mixture by
pouring the solutions over the water level indicator. The water level meter is then rinsed with DI
water.
The field measurement instrument probe is decontaminated by rinsing with DI water prior to
each calibration. The sample collection cup is washed with a detergent/DI water solution and
rinsed with fresh DI water prior to each calibration.
The non-dedicated purging pump is decontaminated after each use and prior to use at subsequent
sampling locations using the following procedures:
a) the pump is submerged into a 55-gallon drum of nonphosphate detergent/DI water mixture;
b) the detergent/DI water solution is pumped through the pump and pump outlet lines;
c) the pump is submerged into a 55-gallon drum of DI water;
d) the DI water solution is pumped through the pump and pump outlet lines;
3
2.2.2 Well Purging and Depth to Groundwater
The non-pumping wells are purged prior to sampling by means of a portable pump. A list of the
wells in order of increasing chloroform concentration is generated quarterly. The order for
purging the non-pumping wells is thus established. The list is included with the Field Data
Worksheets under Tab B. Mill personnel start purging with all of the non-detect wells and then
move to the wells with detectable chloroform concentrations starting with the lowest
concentration and proceeding to the wells with the highest concentration. One deviation to this
practice is made for the continuously pumping wells. These wells are sampled throughout the
sampling event and are not sampled in the order of contamination. This practice does not affect
the samples for this reason: the pumping wells have dedicated pumps and there will be no cross-
contamination resulting from the sampling order.
Samples are collected by means of disposable bailer(s) the day following the purging. The
disposable bailer is used only for the collection of a sample from an individual well and disposed
subsequent to the sampling. As noted in the approved QAP, sampling will generally follow the
same order as purging; however; the sampling order may deviate slightly from the generated list.
This practice does not affect the samples for these reasons: any wells sampled in slightly
different order either have dedicated pumps or are sampled via a disposable bailer. This practice
does not affect the quality or usability of the data as there will be no cross-contamination
resulting from the sampling order.
Before leaving the Mill office, the portable pump and hose are rinsed with DI water. Where
portable (non-dedicated) sampling equipment is used, a rinsate sample is collected at a frequency
of one rinsate sample per 20 field samples. Well depth measurements are taken and the one
casing volume is calculated for those wells which do not have a dedicated pump as described in
Attachment 2-3 of the QAP. Purging is completed to remove stagnant water from the casing and
to assure that representative samples of formation water are collected for analysis. There are
three purging strategies that are used to remove stagnant water from the casing during
groundwater sampling at the Mill. The three strategies are as follows:
1. Purging three well casing volumes with a single measurement of field parameters
specific conductivity, turbidity, pH, redox potential, Dissolved Oxygen ("DO") and water
temperature
2. Purging two casing volumes with stable field parameters for specific conductivity,
turbidity, pH, redox potential, DO, and water temperature (within 10% Relative Percent
Difference ["RPD"])
3. Purging a well to dryness and stability (within 10% RPD) of field parameters for pH,
specific conductivity, and water temperature only after recovery
If the well has a dedicated pump, it is pumped on a set schedule per the remediation plan and is
considered sufficiently evacuated to immediately collect a sample; however, if a pumping well
has been out of service for 48 hours or more, EFRI will follow the purging requirements outlined
in Attachment 2-3 of the QAP. The dedicated pump is used to collect parameters and to collect
the samples as described below. If the well does not have a dedicated pump, a Grundfos pump
(9 -10 gpm pump) is then lowered to the screened interval in the well and purging is started.
4
The purge rate is measured for the well by using a calibrated 5 gallon bucket. This purging
process is repeated at each well location moving from least contaminated to the most
contaminated well. All wells are capped and secured prior to leaving the sampling location.
Wells with dedicated pumps are sampled when the pump is in the pumping mode. If the pump is
not pumping at the time of sampling, it is manually switched on by the Mill Personnel. The well
is pumped for approximately 5 to 10 minutes prior to the collection of the field parameters. Per
the approved QAP, one set of parameters is collected. Samples are collected following the
measurement of one set of field parameters. After sampling, the pump is turned off and allowed
to resume its timed schedule.
2.2.3 Sample Collection
Prior to sampling, a cooler with ice is prepared. The trip blank is also gathered at that time (the
trip blank for these events is provided by the analytical laboratory). Once Mill Personnel arrive
at the well sites, labels are filled out for the various samples to be collected. All personnel
involved with the collection of water and samples are then outfitted with disposable gloves.
Chloroform investigation samples are collected by means of disposable bailers.
Mill personnel use a disposable bailer to sample each well that does not have a dedicated pump.
The bailer is attached to a reel of approximately 150 feet of nylon rope and then lowered into the
well. After coming into contact with the water, the bailer is allowed to sink into the water in
order to fill. Once full, the bailer is reeled up out of the well and the sample bottles are filled as
follows:
• Volatile Organic Compound ("VOC") samples are collected first. This sample consists
of three 40 ml vials provided by the Analytical Laboratory. The VOC sample is not
filtered and is preserved with HCl;
• A sample for nitrate/nitrite is then collected. This sample consists of one 250 ml. bottle
that is provided by the Analytical Laboratory. The nitrate/nitrite sample is not filtered
and is preserved with H2SO4;
• A sample for chloride is then collected. This sample consists of one 500 ml. bottle that is
provided by the Analytical Laboratory. The chloride sample is not filtered and is not
chemically preserved.
After the samples have been collected for a particular well, the bailer is disposed of and the
samples are placed into the cooler that contains ice. The well is then recapped and Mill personnel
proceed to the next well.
2.3 Field Data
Attached under Tab B are copies of the Field Data Worksheets that were completed during the
quarter for the chloroform contaminant investigation monitoring wells identified in paragraph
2.1.1 above, and Table 1.
5
2.4 Depth to Groundwater Data and Water Table Contour Map
Attached under Tab C are copies of the Depth to Water Sheets for the weekly monitoring of
MW-4, MW-26, TW4-1, TW4-2, TW4-4, TW4-11, TW4-19, TW4-21, TW4-22, TW4-24, TW4-
25, TW4-37, TW4-39, TW4-40, TW4-41 and TWN-2 as well as the monthly depth to
groundwater data for the chloroform contaminant investigation wells and the non-pumped wells
measured during the quarter. Depth to groundwater measurements that were utilized for
groundwater contours are included on the Quarterly Depth to Water Worksheet at Tab D of this
report, along with the kriged groundwater contour map for the current quarter generated from
this data. A copy of the kriged groundwater contour map generated from the previous quarter's
data is provided under Tab E.
2.5 Laboratory Results
2.5.1 Copy of Laboratory Results
All analytical results were provided by Chemtech-Ford Analytical Laboratory ("CTF"). Table 1
lists the dates when analytical results were reported to the Director, Regulatory Compliance for
each sample.
Results from the analyses of samples collected for this quarter's chloroform contaminant
investigation are provided under Tab Hof this Report. Also included under Tab Hare the results
of the analyses for duplicate samples, the DIFB, and rinsate samples for this sampling effort, as
identified in Table 1, as well as results for trip blank analyses required by the Chloroform QAP.
2.5.2 Regulatory Framework
As discussed in Section 1.0, above, the SCO triggered a series of actions on EFRI's part. In
addition to the monitoring program, EFRI has equipped one nitrate well and fifteen chloroform
wells with pumps to recover impacted groundwater and has initiated recovery of chloroform
from the perched zone.
Sections 4.0 and 5.0, below, interpret the groundwater level and flow information, contaminant
analytical results, and pump test data to assess effectiveness of EFRI's chloroform capture
program.
3.0 QUALITY ASSURANCE AND DATA VALIDATION
The Director, Regulatory Compliance performed a QA/Quality Control ("QC") review to
confirm compliance of the monitoring program with requirements of the QAP. As required in the
QAP, data QA includes preparation and analysis of QC samples in the field, review of field
procedures, an analyte completeness review, and QC review of laboratory methods and data.
Identification of field QC samples collected and analyzed is provided in Section 3.1. Discussion
of adherence to Mill sampling Standard Operating Procedures ("SOPs") is provided in Section
3.2. Analytical completeness review results are provided in Section 3.3. The steps and tests
applied to check laboratory data QA/QC are discussed in Sections 3.4.4 through 3.4.9 below.
6
The analytical laboratory has provided summary reports of the analytical QA/QC measurements
necessary to maintain conformance with National Environmental Laboratory Accreditation
Conference ("NELAC") certification and reporting protocol. The Analytical Laboratory QA/QC
Summary Reports, including copies of the Mill's Chain of Custody and Analytical Request
Record forms for each set of Analytical Results, follow the analytical results under Tab H.
Results of the review of the laboratory QA/QC information are provided under Tab I and are
discussed in Section 3 .4, below.
3.1 Field QC Samples
The following QC samples were generated by Mill personnel and submitted to the analytical
laboratory in order to assess the quality of data resulting from the field sampling program.
Field QC samples for the chloroform investigation program consist of one field duplicate sample
for each 20 samples, a trip blank for each shipped cooler that contains VOCs, one DIFB and
rinsate samples.
During this quarter, three duplicate samples were collected as indicated in Table 1. The
duplicates were sent blind to the analytical laboratory and analyzed for the same parameters as
the chloroform wells.
Three trip blanks were provided by CTF and returned with the quarterly chloroform monitoring
samples.
Two rinsate blank samples were collected as indicated on Table 1. Rinsate samples were labeled
with the name of the subsequently purged well with a terminal letter "R" added ( e.g. TW 4-7R).
The results of these analyses are included with the routine analyses under Tab H.
In addition, one DIFB, while not required by the Chloroform QAP, was collected and analyzed
for the same constituents as the well samples and rinsate blank samples.
3.2 Adherence to Mill Sampling SOPs
The Director, Regulatory Compliance's review of Mill Personnel's adherence to the existing
SOPs, confirmed that the QA/QC requirements established in the QAP and Chloroform QAP
were met.
3.3 Analyte Completeness Review
All analyses required by the GCAP for chloroform monitoring for the period were performed.
3.4 Data Validation
The QAP and GWDP identify the data validation steps and data QC checks required for the
chloroform monitoring program. Consistent with these requirements, the Director, Regulatory
Compliance performed the following evaluations: a field data QA/QC evaluation, a holding time
7
check, a receipt temperature check, an analytical method check, a reporting limit evaluation, a
trip blank check, a QA/QC evaluation of sample duplicates, a QC Control Limit check for
analyses and blanks including the DIFB and a rinsate sample check. Each evaluation is discussed
in the following sections. Data check tables indicating the results of each test are provided under
Tab I.
3.4.1 Field Data QA/QC Evaluation
The Director, Regulatory Compliance performs a review of the field recorded parameters to
assess their adherence with QAP requirements. The assessment involved review of two sources
of information: the Field Data Sheets and the Quarterly Depth to Water summary sheet. Review
of the Field Data Sheets addresses well purging volumes and measurement of field parameters
based on the requirements discussed in section 2.2.1 above. The purging technique employed
determines the requirements for field parameter measurement and whether stability criteria are
applied. Review of the Depth to Water data confirms that all depth measurements used for
development of the groundwater contour maps were conducted within a five-day period as
indicated by the measurement dates in the summary sheet under Tab D. The results of this
quarter's review of field data are provided under Tab I.
Based upon the review of the field data sheets, the purging and field measurements were
completed in conformance with the QAP requirements. A summary of the purging techniques
employed and field measurements taken is described below:
Purging Two Casing Volumes with Stable Field Parameters (within 10% RPD)
Wells TW4-5, TW4-8, TW4-9, TW4-16, MW-32, TW4-18, TW4-23, TW4-32, and TW4-38
were sampled after two casing volumes were removed. Field parameters (pH, specific
conductivity, turbidity, water temperature, DO, and redox potential) were measured during
purging. All field parameters for this requirement were stable within 10% RPD.
Purging a Well to Dryness and Stability of a Limited List of Field Parameters
Wells TW4-3, TW4-6, TW4-7, TW4-10, TW4-12, TW4-13, TW4-14, TW4-26, TW4-27, TW4-
28, TW4-29, TW4-30, TW4-31, TW4-33, TW4-34, TW4-35, TW4-36, TW4-42, and TW4-43
were pumped to dryness before two casing volumes were evacuated. After well recovery, one set
of measurements of pH, conductivity and temperature were taken. The samples were then
collected, and another set of measurements of pH, conductivity and temperature were taken.
Stabilization of pH, conductivity and temperature are required within 10% RPD under the QAP.
The QAP requirements for stabilization were met.
Continuously Pumped Wells
Wells MW-4, TW4-l, TW4-2, TW4-4, TW4-11, MW-26, TW4-19, TW4-21, TW4-22, TW4-24,
TW4-25, TW4-37, TW4-39, TW4-40, and TW4-41 are continuously pumped wells. These wells
are pumped on a set schedule per the remediation plan and are considered sufficiently evacuated
to immediately collect a sample.
During review of the field data sheets, the Director, Regulatory Compliance confirmed that
sampling personnel consistently recorded depth to water to the nearest 0.01 foot.
8
The review of the field sheets for compliance with QAP requirements resulted in the
observations noted below. The QAP requirements in Attachment 2-3 specifically state that field
parameters must be stabilized to within 10% over at least 2 consecutive measurements for wells
purged to 2 casing volumes or purged to dryness. The QAP Attachment 2-3 states that turbidity
should be less than 5 NTU prior to sampling unless the well is characterized by water that has a
higher turbidity. The QAP Attachment 2-3 does not require that turbidity measurements be less
than 5 NTU prior to sampling. As such, the noted observations below regarding turbidity
measurements greater than 5 NTU are included for information purposes only.
Wells TW4-9, TW4-16, TW4-18, TW4-19, TW4-23, TW4-32, and TW4-38 exceeded the QAP's
5 NTU goal. EFRI's letter to DWMRC of March 26, 2010 discusses further why turbidity does
not appear to be an appropriate parameter for assessing well stabilization. In response to
DWMRC's subsequent correspondence dated June 1, 2010 and June 24, 2010, EFRI completed a
monitoring well redevelopment program. The redevelopment report was submitted to DWMRC
on September 30, 2011. DWMRC responded to the redevelopment report via letter on November
15, 2012. Per the DWMRC letter dated November 15, 2012, the field data generated this quarter
are compliant with the turbidity requirements of the approved QAP.
3.4.2 Holding Time Evaluation
QAP Table 1 identifies the method holding times for each suite of parameters. Sample holding
time checks are provided in Tab I. The samples were received and analyzed within the required
holding times.
3.4.3 Receipt Temperature Evaluation
Chain of Custody sheets were reviewed to confirm compliance with the QAP requirement which
specifies that samples be received at 6°C or lower. Sample temperatures checks are provided in
Tab I. The samples were received within the required temperature limit.
3.4.4 Analytical Method Checklist
The analytical methods reported by the laboratory were checked against the required methods
enumerated in the Chloroform QAP. Analytical method checks are provided in Tab I. The
analytical methods were consistent with the requirements of the Chloroform QAP.
3.4.5 Reporting Limit Evaluation
The analytical method reporting limits reported by the laboratory were checked against the
reporting limits enumerated in the Chloroform QAP. Reporting Limit Checks are provided
under Tab I. The analytes were measured and reported to the required reporting limits; several
sets of sample results had the reporting limit raised for at least one analyte due to matrix
interference and/or sample dilution. In these cases, the reported value for the analyte was higher
than the increased detection limit.
9
3.4.6 Receipt pH Evaluation
Appendix A of the QAP states that volatile samples are required to be preserved and arrive at the
laboratory with a pH less than 2. A review of the laboratory data revealed that volatile samples
were received at the laboratory with a pH less than 2.
3.4. 7 Trip Blank Evaluation
Trip blank results were reviewed to identify any VOC contamination resulting from transport of
the samples. Trip blank checks are provided in Tab I. All of the trip blank samples were
nondetect.
3.4.8 QA/QC Evaluation for Sample Duplicates
Section 9.1.4 a) of the QAP states that RPDs will be calculated for the comparison of duplicate
and original field samples. The QAP acceptance limits for RPDs between the duplicate and
original field sample is less than or equal to 20% unless the measured results are less than 5
times the required detection limit. This standard is based on the EPA Contract Laboratory
Program National Functional Guidelines for Inorganic Data Review, February 1994, 9240.1-05-
01 as cited in the QAP. The RPDs are calculated for the duplicate pairs for all analytes
regardless of whether or not the reported concentrations are greater than 5 times the required
detection limits; however, data are considered noncompliant only when the results are greater
than 5 times the reported detection limit and the RPD is greater than 20%. The additional
duplicate information is provided for information purposes.
The duplicate results were less than or equal to the 20% RPD criteria in the samples. Duplicate
results are included in Tab I.
3.4.9 Rinsate Sample Check
Rinsate blank sample checks are provided in Tab I. The rinsate blank sample concentration
levels were compared to the QAP requirements i.e., that rinsate sample concentrations be one
order of magnitude lower than that of the actual well.
Rinsate blank sample TW4-03R had a reported chloroform detections of 2.0 ug/L for
chloroform. TW4-3 was nondetect for chloroform. The rinsate blank results for TW4-3 were
outside acceptance limits for the rinsate blank results.
TW4-3R was collected after decontamination and prior to the pump being used to collect any Q2
2023 chloroform samples. Because the pump was not used prior to the rinsate sample collection,
the detection is not the result of cross contamination.
Rinsate blank sample TW4-8R had a reported detection of 1.8 ug/L for chloroform. The well
sampled before TW4-08R was TW4-06 which had a detection 2.3 ug/L chloroform. The result
for TW4-8 was 8.3 ug/L. The rinsate blank results for TW4-08R were outside acceptance limits
for the rinsate blank results because the rinsate blank results were not one order of magnitude
less than the associated sample results ( either TW 4-6 or TW 4-8) The rinsate samples with
positive detections are likely the result of contributions from the DI system and not the result of
cross contamination as indicated by the positive result in TW4-3R.
The DI blank from the on-site DI system which generates the water for rinsate blank samples
was 2.2 ug/L. EFRI is continuing the investigation of the chloroform in the DI samples. The
results of this investigation will be provided in future reports. EFRI is contacting the media and
filter provider again and looking at plumbing systems to determine if the chloroform is
originating within the physical system.
The data for all samples are usable as reported. Even if there were contribution of chloroform to
the sample results, it would bias the data high and would result in a more conservative data
application. EFRI does not believe the data quality has been affected.
3.4.10 Other Laboratory QA/QC
Section 9.2 of the QAP requires that the laboratory's QA/QC Manager check the following items
in developing data reports: (1) sample preparation information is correct and complete, (2)
analysis information is correct and complete, (3) appropriate analytical laboratory procedures are
followed, (4) analytical results are correct and complete, (5) QC samples are within established
control limits, (6) blanks are within QC limits, (7) special sample preparation and analytical
requirements have been met, and (8) documentation is complete. In addition to other laboratory
checks described above, EFRI's Director, Regulatory Compliance rechecks QC samples and
blanks (items (5) and (6)) to confirm that the percent recovery for spikes and the relative percent
difference for spike duplicates are within the method-specified acceptance limits, or that the case
narrative sufficiently explains any deviation from these limits. Results of this quantitative check
are provided in Tab I.
The lab QA/QC results met these specified acceptance limits except as noted below.
The QAP, Section 8.1.2 states that an MS/MSD pair may be analyzed with each analytical batch
depending on the analytical method specifications. The QAP does not specify acceptance limits
for the MS/MSD pair, and the QAP does not specify that the MS/MSD pair be prepared on EFRI
samples only. Acceptance limits for MS/MSDs are set by the laboratories. The review of the
information provided by the laboratories in the data packages verified that the specifications in
the analytical methods to analyze either an MS or MS/MSD pair with each analytical batch were
met as applicable to each method. While the QAP does not require it, the recoveries were
reviewed for compliance with the laboratory established acceptance limits. The QAP does not
require this level of review and the results of this review are provided for information only.
The information from the Laboratory QA/QC Summary Reports indicates that the MS/MSDs
recoveries and the associated RPDs for the samples were within acceptable laboratory limits
except as indicated in Tab I. The data recoveries and RPDs which are outside the laboratory
established acceptance limits do not affect the quality or usability of the data because the
recoveries and RPDs above or below the acceptance limits are indicative of matrix interference
most likely caused by other constituents in the samples. Matrix interferences are applicable to
the individual sample results only. The specifications in the analytical methods to analyze a
11
MS/MSD pair with each analytical batch (as applicable to the methods) was met and as such the
data are compliant with the QAP.
The QAP specifies that surrogate compounds shall be employed for all organic analyses, but the
QAP does not specify acceptance limits for surrogate recoveries. The analytical data associated
with the routine quarterly sampling met the requirement specified in the QAP. The information
from the Laboratory QA/QC Summary Reports indicates that the surrogate recoveries for the
quarterly chloroform samples were within acceptable laboratory limits for the surrogate
compounds except as noted in Tab I. The surrogates that were outside of acceptance limits were
above the upper limits. High surrogate recoveries indicate a high bias to the sample results and
as such have no affect on the usability of the data. The requirement in the QAP to analyze
surrogate compounds was met and the data are compliant with the QAP. Furthermore, there are
no QAP requirements for surrogate recoveries.
The QAP, Section 8.1.2 requires that each analytical batch shall be accompanied by a method
blank. The analytical batches routinely contain a blank, which is a blank sample made and
carried through all analytical steps. For the Mill samples, a method blank was prepared for the
analytical methods. Per the approved QAP, contamination detected in analysis of method blanks
will be used to evaluate any analytical laboratory contamination of environmental samples. The
QAP states that non-conformance conditions will exist when contaminant levels in the
samples( s) are not an order of magnitude greater than the blank result. There were no detections
in the method blanks in this quarter. Method blank results are included in Tab I.
The information from the Laboratory QA/QC Summary Reports indicates that there were low
and high LCS recoveries in one of the analytical batches as indicated in Tab I.
A low LCS recovery for chloromethane was reported in analytical report 23F1372. The low
LCS affected three samples. The data were flagged in accordance with EPA Method 8260. The
data are usable for the intended purpose because chloromethane is not frequently detected.
The high LCS recovery for carbon tetrachloride was reported in analytical report 23F1372. The
data were flagged in accordance with EPA Method 8260. The data are usable for the intended
purpose because carbon tetrachloride is not frequently detected and high LCS recoveries indicate
a high bias to the sample results and as such have no affect on the data ..
4.0 INTERPRETATION OF DATA
4.1 Interpretation of Groundwater Levels, Gradients and Flow Directions.
4.1.1 Current Site Groundwater Contour Map
The water level contour maps (See Tab D) indicate that perched water flow ranges from
generally southwesterly beneath the Mill site and tailings cells to generally southerly along the
eastern and western margins of White Mesa south of the tailings management system.
Perched water mounding associated with the wildlife ponds locally changes the generally
southerly perched water flow patterns. For example, northeast of the Mill site, mounding
12
associated with formerly used wildlife ponds is still evident and disrupts the generally
southwesterly flow pattern, to the extent that locally northwesterly flow occurs near MW-19 and
PIEZ-1. The impact of the mounding associated with the northern ponds, to which water has not
been delivered since March 2012, is diminishing and is expected to continue to diminish as the
associated mound decays due to reduced recharge. The perched groundwater mound associated
with the southern wildlife pond is also diminishing due to reduced recharge at that location.
Not only has recharge from the wildlife ponds impacted perched water elevations and flow
directions at the site, but the cessation of water delivery to the northern ponds, which are
generally upgradient of the nitrate and chloroform plumes at the site, resulted in changing
conditions that were expected to impact constituent concentrations and migration rates within the
plumes. Specifically, past recharge from the northern ponds helped limit many constituent
concentrations within the plumes by dilution while the associated groundwater mounding
increased hydraulic gradients and contributed to plume migration. Since use of the northern
ponds was discontinued in March 2012, increases in constituent concentrations in many wells,
and decreases in hydraulic gradients within the plumes, are attributable to reduced recharge and
the decay of the associated groundwater mound. EFRI and its consultants anticipated these
changes and discussed these and other potential effects with DWMRC in March 2012 and May
2013.
The impacts associated with cessation of water delivery to the northern ponds were expected to
propagate downgradient (south and southwest) over time. Wells close to the ponds were
generally expected to be impacted sooner than wells farther downgradient of the ponds.
Therefore, constituent concentrations were generally expected to increase in downgradient wells
close to the ponds before increases were detected in wells farther downgradient of the ponds.
Although such increases were anticipated to result from reduced dilution, the magnitude and
timing of the increases were anticipated to be, and have been, difficult to predict due to the
complex permeability distribution at the site and factors such as pumping and the rate of decay of
the groundwater mound. Because of these complicating factors, some wells completed in higher
permeability materials were expected to be impacted sooner than other wells completed in lower
permeability materials even though the wells completed in lower permeability materials were
closer to the ponds.
In general, chloroform and nitrate concentrations within and in the vicinity of the chloroform
plume appear to have been impacted to a greater extent than nitrate concentrations within and
adjacent to the nitrate plume. This behavior is reasonable considering that the chloroform plume
is generally more directly downgradient of and more hydraulically connected (via higher
permeability materials) to the northern wildlife ponds.
In addition, the southern wildlife pond is in relatively close proximity to the downgradient
(southern) extremity of the chloroform plume. Reduced recharge at the southern pond, and decay
of the associated groundwater mound, has been expected to impact water level behavior and
chloroform and nitrate concentrations in wells within this portion of the chloroform plume.
Localized increases in concentrations of constituents such as chloroform and nitrate within and
near the chloroform plume, and of nitrate and chloride within and near the nitrate plume, may
13
occur even when these plumes are under control. Ongoing mechanisms that can be expected to
increase constituent concentrations locally as a result of reduced wildlife pond recharge include
but are not limited to:
1) Reduced dilution -the m1xmg of low constituent concentration pond recharge into
existing perched groundwater will be reduced over time.
2) Reduced saturated thicknesses -dewatering of higher permeability layers rece1vmg
primarily low constituent concentration pond water will result in wells intercepting these
layers receiving a smaller proportion of the low constituent concentration water.
The combined impact of the above two mechanisms was anticipated to be more evident at
chloroform pumping wells MW-4, MW-26, TW4-4, TW4-19, and TW4-20 (now abandoned);
nitrate pumping wells TW4-22, TW4-24, TW4-25, and TWN-2; and non-pumped wells adjacent
to the pumped wells. Impacts were also expected to occur over time at wells subsequently added
to the chloroform pumping network: TW4-1, TW4-2, TW4-11, TW4-21 and TW4-37 (added
during 2015); TW4-39 (added during the fourth quarter of 2016); TW4-41 (added during the
second quarter of 2018); and TW 4-40 ( added during the second quarter of 2019). The overall
impact was expected to be generally higher constituent concentrations in these wells over time
until mass reduction resulting from pumping and natural attenuation eventually reduces
concentrations. Short-term changes in concentrations at pumping wells and wells adjacent to
pumping wells are also expected to result from changes in pumping conditions.
In addition to changes in the flow regime caused by wildlife pond recharge, perched flow
directions are locally influenced by operation of the chloroform and nitrate pumping wells. Well
defined cones of depression were typically evident in the vicinity of all chloroform pumping
wells except TW4-4 and TW4-37, which began pumping in the first quarter of 2010 and the
second quarter of 2015, respectively. The third quarter of 2018 was the first quarter that a well-
defined cone of depression was associated with TW 4-4, primarily the result of pumping at
adjacent well TW4-41.
The lack of well-defined capture associated with chloroform pumping well TW4-4 was
consistent prior to the third quarter of 2018, even though pumping since the first quarter of 2010
has depressed the water table in the vicinity of this well. The lack of a well-defined cone of
depression near TW 4-4 likely resulted from 1) variable permeability conditions in the vicinity of
TW4-4, and 2) historical relatively low water levels at adjacent well TW4-14.
Nitrate pumping wells TW4-22, TW4-24, TW4-25, and TWN-2 started pumping during the first
quarter of 2013. By the fourth quarter of 2013, operation of the nitrate pumping system had
produced well-defined impacts on water levels. Water level impacts of the nitrate and chloroform
pumping systems overlap; however the long-term interaction between the nitrate and chloroform
pumping systems is evolving, and changes will be reflected in data collected during routine
monitoring.
Water level patterns near nitrate pumping wells are expected to be influenced by the presence of,
and the decay of, the groundwater mound associated with the northern wildlife ponds, and by the
historically relatively low water level at TWN-7. Since 2012, water levels in TWN-7 have risen
14
while water levels in nearby wells have generally dropped due to pumping and the decay of the
northern groundwater mound. These factors have reduced water level differences between TWN-
7 and nearby wells.
As discussed above, variable permeability conditions likely contributed to the lack of a well-
defined cone of depression near chloroform pumping well TW4-4. Changes in water levels at
wells immediately south and southeast (downgradient) of TW4-4 resulting from TW4-4 pumping
were expected to be muted because TW 4-4 is located at a transition from relatively high to
relatively low permeability conditions south and southeast of TW4-4. As will be discussed
below, the permeability of the perched zone at TW4-6, TW4-26, TW4-29, TW4-30, TW4-3 l,
TW4-33, TW4-34, and TW4-35 is one to two orders of magnitude lower than at TW4-4, and the
permeability at TW4-27 is approximately three orders of magnitude lower than at TW4-4.
Detecting water level drawdowns in wells immediately south and southeast of TW 4-4 resulting
from TW4-4 pumping has also been complicated by a former, long-term increase in water levels
in this area that has been attributable to past wildlife pond recharge. Between the fourth quarter
of 2007 and the fourth quarter of 2009 Gust prior to the start of TW4-4 pumping), water levels at
TW4-4 and TW4-6 increased by nearly 2.7 and 2.9 feet at rates of approximately 1.2 feet/year
and 1.3 feet/year, respectively. However, between the start of pumping at TW4-4 (first quarter of
2010) and the fourth quarter of 2013 , the rate of increase in water levels at TW 4-6 was reduced
to less than 0.5 feet/year suggesting that TW4-6 is within the hydraulic influence of TW4-4.
Water levels in wells currently within the chloroform plume south of TW4-4 (TW4-26, TW4-29
and TW4-40) are generally decreasing to stable. Note that water levels at TW4-30, which was
incorporated within the plume from the fourth quarter of 2020 through the second quarter of
2022, have been generally decreasing since 2020. Generally decreasing to stable water levels are
evident at TW4-26 and TW4-29 since the fourth quarter of 2013; and at TW4-40 since
installation in the first quarter of 2018. The water level in TW4-6 (remaining outside the plume
again this quarter) has also trended generally downward since the fourth quarter of 2013;
likewise the water level at TW4-33 (outside the plume since the first quarter of 2021) has trended
downward since 2013. These generally downward trends are attributable to both the cessation of
water delivery to the wildlife ponds and pumping. Although water levels at some of the wells
marginal to the chloroform plume such as TW4-14, TW4-27 and TW4-31 were generally
increasing until about the first quarter of 2018, these water levels now appear to be relatively
stable to decreasing. Water level trends at TW4-30 have been similar to those at TW4-27.
These spatially variable water level trends likely result from pumping conditions, the
permeability distribution, and distance from the wildlife ponds. Wells that are relatively
hydraulically isolated ( due to completion in lower permeability materials or due to intervening
lower permeability materials) and that are more distant from pumping wells and the wildlife
ponds, are expected to respond more slowly to pumping and reduced recharge than wells that are
less hydraulically isolated and are closer to pumping wells and the wildlife ponds. Wells that are
more hydraulically isolated will also respond more slowly to changes in pumping.
The previous lack of a well-defined cone of depression associated with TW4-4 was also
influenced by the historically relatively low water level at non-pumping well TW 4-14, located
east of TW4-4 and TW4-6. Prior to 2018, although water level differences among these three
15
wells had diminished, and TW4-4 has been pumping since 2010, the water level at TW4-14 was
typically lower than the water level at TW 4-6 and lower to an even greater extent than the water
level at TW4-4. However, since the first quarter of 2018, as a result of pumping at TW4-
41(adjacent to TW4-4), and declining water levels at TW4-6, the water level at TW4-14 was
typically higher than the water levels at both TW4-4 and TW4-6. During the current quarter the
water level at TW4-14 (approximately 5535.5 feet above mean sea level ["ft amsl"]) is more than
7 feet higher than the water level at TW4-6 (approximately 5528.4 ft amsl), and is more than 6
feet higher than the water level at TW4-4 (approximately 5529.3 ft. amsl).
The static water levels at wells TW4-14 and downgradient well TW4-27 (installed south of
TW4-14 in the fourth quarter of 2011) were similar (within 1 to 2 feet) until the third quarter of
2014; both appeared anomalously low. TW4-27 was positioned at a location considered likely to
detect any chloroform present and/or to bound the chloroform plume to the southeast and east
(respectively) of TW4-4 and TW4-6. As will be discussed below, groundwater data collected
since installation indicates that TW4-27 does indeed bound the chloroform plume to the
southeast and east of TW4-4 and TW4-6 (respectively); however, chloroform exceeding 70 µg/L
has been detected at more recently installed temporary perched wells TW4-29 (located south of
TW4-27) and TW4-33 (located between TW4-4 and TW4-29).
Prior to the installation of TW4-27, the persistently low water level at TW4-14 was considered
anomalous because it appeared to be downgradient of all three wells TW4-4, TW4-6, and TW4-
26, yet chloroform had not been detected at TW4-14. Chloroform had apparently migrated from
TW4-4 to TW4-6 and from TW4-6 to TW4-26. This suggested that TW4-26 was actually
downgradient of TW4-6, and TW4-6 was actually downgradient of TW4-4, regardless of the
flow direction implied by the relatively low water level at TW4-14. The water level at TW4-26
(5526.4 feet amsl) is, however, lower than water levels at adjacent wells TW4-6 (5528.4 feet
amsl) and TW4-23 (5530.5 feet amsl), as shown in the detail water level map under Tab D.
Hydraulic tests indicate that the permeability at TW4-27 is an order of magnitude lower than at
TW4-6 and three orders of magnitude lower than at TW4-4 (see Hydro Geo Chem, Inc. [HGC],
September 20, 2010: Hydraulic Testing of TW4-4, TW4-6, and TW4-26, White Mesa Uranium
Mill, July 2010; and HGC, November 28, 2011: Installation, Hydraulic Testing, and Perched
Zone Hydrogeology of Perched Monitoring Well TW4-27, White Mesa Uranium Mill Near
Blanding, Utah). Past similarity of water levels at TW4-14 and TW4-27, and the low
permeability estimate at TW4-27, suggested that both wells were completed in materials having
lower permeability than nearby wells. The low permeability condition likely reduced the rate of
long-term water level increase at TW4-14 and TW4-27 compared to nearby wells, yielding water
levels that appeared anomalously low. This behavior is consistent with hydraulic test data
collected from more recently installed wells TW4-29, TW4-30, TW4-31, TW4-33, TW4-34 and
TW4-35, which indicate that the permeability of these wells is one to two orders of magnitude
higher than the permeability of TW4-27 (see: HGC, January 23, 2014, Contamination
Investigation Report, TW4-12 and TW4-27 Areas, White Mesa Uranium Mill Near Blanding,
Utah; and HGC, July 1, 2014, Installation and Hydraulic Testing of TW4-35 and TW4-36,
White Mesa Uranium Mill Near Blanding, Utah [As-Built Report]). Hydraulic tests also indicate
that the permeability at TW4-36 is slightly higher than but comparable to the low permeability at
16
TW4-27, suggesting that TW4-36, TW4-14 and TW4-27 are completed in a continuous low
permeability zone.
The current quarterly water level at TW4-27 (5528.7 ft. amsl) is nearly 7 feet lower than the
water level at TW4-14 (5535.5 ft. amsl). Increases in water level differences between TW4-14
and TW4-27 since 2013 are attributable to more rapid increases in water levels at TW4-14
compared to TW4-27. This behavior likely results primarily from: the relative positions of the
wells; past water delivery to the northern wildlife ponds; and the permeability distribution. Past
seepage from the ponds caused propagation of water level increases in all directions including
downgradient to the south. The relative hydraulic isolation of TW4-14 and TW4-27 delayed
responses at these locations. Until pumping started at TW 4-41, water levels at both these wells
were consistently lower than in surrounding higher permeability materials even though water
levels in surrounding materials were generally decreasing due to reduced pond seepage and
pumping. Although water levels at TW4-14 and TW4-27 appear to have stabilized, the previous
rate of increase was higher at TW4-14 due to factors that include: closer proximity to the
northern pond seepage source; and a smaller thickness of low permeability materials separating
TW 4-14 from surrounding higher permeability materials. In addition, hydraulic gradients
between TW 4-14 and surrounding higher permeability materials were relatively large and were
consistently directed toward TW 4-14 prior to TW 4-41 pumping. Slowing of the rates of water
level increase at TW4-14 (since 2015) and TW4-27 (since early 2014), and relative stabilization
since about the first quarter of 2018, are attributable to changes in hydraulic gradients between
these wells and surrounding higher permeability materials.
In addition, water levels in this area are affected by reduced recharge at the southern wildlife
pond and the decay of the associated groundwater mound. The decay of the mound is expected to
contribute to changes in hydraulic gradients between the low permeability materials penetrated
by TW4-14 and TW4-27 and the surrounding higher permeability materials. Because TW4-27 is
closer to the southern wildlife pond than TW4-14, changes in hydraulic gradients attributable to
decay of the southern groundwater mound are expected to impact TW4-27 sooner and to a
greater extent than TW 4-14, consistent with the lower rate of increase in water levels at TW 4-2 7,
and the earlier reduction in the rate of increase (since early 2014) as discussed above).
The low permeability at TW4-14 and TW4-27 is expected to retard the transport of chloroform
to these wells (compared to nearby wells). As will be discussed in Section 4.2.3, TW4-14 and
TW4-27 remain outside the plume with current quarter chloroform concentrations of less than 1
µg/L and 2.5 µg/L, respectively.
Chloroform exceeding 70 µg/L detected at TW4-29 and TW4-33 since their installation in 2013
indicates that, in addition to migrating south from TW4-4 to TW4-6 and TW4-26, chloroform
also migrated along a relatively narrow path to the southeast from the vicinity of TW 4-4 to TW 4-
33 then TW4-29. Such migration was in a direction nearly cross-gradient with respect to the
direction of groundwater flow implied by the historic groundwater elevations in this area, which,
until about 2014, placed TW4-14 almost directly downgradient of TW4-4. Such migration was
historically possible because the water levels at TW4-29 were lower than the water levels at
TW4-4 (and TW4-6). The permeability and historic water level distributions are generally
consistent with the apparent nearly cross-gradient migration of chloroform from TW 4-4 around
17
the low permeability zone defined by TW4-36, TW4-14, and TW4-27. (Note that, although
concentrations at TW4-29 still exceed 70 µg/L, concentrations at TW4-33 have remained below
70 µg/L since the end of 2020.)
Chloroform at TW4-30 exceeded 70 µg/L for the first time during the fourth quarter of 2020;
dropped below 70 µg/L during the third quarter of 2022; and was detected at approximately 47
µg/L this quarter. Consequently, TW4-30 again bounds the plume immediately to the east.
Chloroform was not detected at relatively recently installed bounding well TW4-43 (located east-
southeast of TW4-30); nor at wells TW4-31 (located east of TW4-27), or TW4-35 (located
southeast and generally downgradient of TW4-29). During the third quarter of 2022 chloroform
was detected for the first time at TW4-34 (located south and cross-to downgradient of TW4-29)
at a concentration of 1.2 µg/L; and was again detected at 1.2 µg/L this quarter.
Data from wells within and adjacent to the southern portion of the chloroform plume indicate
that:
1. Chloroform exceeding 70 µg/L at TW4-29 is bounded by concentrations below 70 µg/L at
wells TW4-6, TW4-23, TW4-27, TW4-33, TW4-34, TW4-35 and TW4-42; and, as
discussed above, TW4-30 (with a concentration this quarter of approximately 47 µg /L)
again bounds the plume immediately to the east. Although previously downgradient of
TW4-29, due to long-term changes in water levels, TW4-30 is now generally cross-
gradient of TW4-29. TW4-6, TW4-23, TW4-27 and TW4-33 are generally cross-to
upgradient of TW4-29; TW4-34 and TW4-35 are generally cross-to downgradient of
TW4-29; TW4-42 is generally cross-to downgradient of TW4-29; and TW4-43 is
generally cross-to downgradient of TW4-30.
2. Chloroform concentrations at TW4-33 that are lower than concentrations at TW4-29, and
the likelihood that a pathway exists from TW4-4 to TW4-33 to TW4-29, suggest that
concentrations in the vicinity of TW4-33 were likely higher prior to initiation of TW4-4
pumping, and that lower concentrations historically detected at TW4-33 are due to its
closer proximity to TW4-4.
3. Chloroform concentrations at TW4-26 exceeded 70 µg/L for the first time during the
second quarter of 2017. Chloroform at TW4-26 is bounded by concentrations below 70
µg/L at TW4-6 and TW4-23 (located up-to cross-gradient of TW4-26); and at TW4-34
(located generally cross-gradient of TW4-26). Chloroform has not been detected at
TW4-23; and, although historically non-detect, chloroform was first detected at TW4-34
during the third quarter of 2022. Since that first detection, chloroform has been detected
twice, including during the current quarter (at a concentration of 1.2 µg/L). Although
chloroform exceeding 70 µg/L was detected at well TW 4-40, installed approximately 200
feet south of TW4-26 in February, 2018, chloroform has not been detected at TW4-42,
installed approximately 200 feet south of TW4-40 in April, 2019. TW4-42 is generally
down to cross-gradient of TW4-26 and downgradient of TW4-40 and bounds the
chloroform plume to the south.
TW4-4 pumping, enhanced by operation of adjacent pumping well TW4-41, has been expected
to eventually reduce chloroform at both TW4-29 and TW4-33 by cutting off the source. The
decrease at TW4-33 has been anticipated to be faster than at TW4-29 because TW4-33 is in
18
closer proximity to TW4-4 pumping. Such behavior would be analogous to the temporary
decreases in chloroform concentrations that occurred at TW4-6 and TW4-26 once TW4-4
pumping began (discussed in Section 4.2.3). Since installation in 2013, concentrations at TW4-
33 have been relatively stable to decreasing (and have generally been decreasing since 2018);
however, from the third quarter of 2014 until the second quarter of 2020, concentrations at TW 4-
29 generally increased before subsequently stabilizing and decreasing.
This behavior suggests that chloroform migration has been arrested at TW4-33 by TW4-4 (and
TW4-41) pumping and that previously increasing chloroform at TW4-29 resulted from a remnant
of the plume that migrated past TW4-33 and generally toward TW4-30 (which was previously
downgradient of TW4-29). The influence of TW4-4 pumping at the distal end of the plume is
consistent with generally decreasing water levels at both TW4-29 and TW4-33. Pumping at
TW 4-41 since the second quarter of 2018 has been expected to help maintain or enhance this
decline.
Decreasing water level trends at TW4-29 and TW4-33 are also consistent with reduced wildlife
pond seepage. The decay of the groundwater mound associated with the southern wildlife pond,
which is 3 to 4 times closer to the southern extremity of the chloroform plume than the northern
ponds, is expected to impact water levels within and adjacent to this portion of the plume.
Reduced wildlife pond seepage, in particular, reduced seepage from the southern wildlife pond,
likely contributes to decreasing water level trends at both wells (since about the fourth quarter of
2013); temporarily increased concentrations at TW4-6 subsequent to the first quarter of 2014;
and increased concentrations at TW4-26 since the third quarter of 2016.
As the groundwater mound associated with the southern pond decays, groundwater flow
directions in the southern extremity of the plume have become more southerly, and plume
migration has turned more to the south. An increasingly southerly direction of plume migration
is consistent with water level changes in this area and increased concentrations at TW4-26.
In addition, generally decreasing concentrations at TW4-6 since the third quarter of 2015, and
generally increased concentrations at TW 4-26 since the third quarter of 2016, suggest that TW 4-
4 pumping has arrested chloroform migration between TW 4-4 and TW 4-6, and that increased
chloroform at TW4-26 results from a remnant of the plume that continues to migrate south from
TW4-6 to TW4-26. The enhancement of pumping in the vicinity of TW4-4 by the start-up of
TW 4-41 pumping in the second quarter of 2018 has been expected to increase this apparent
separation and to have resulted in concentrations at TW4-6 dropping below 70 µg/L after the
second quarter of 2018. Furthermore, the initiation of pumping at TW4-40 during the second
quarter of2019 is expected to reduce or prevent chloroform migration to the south ofTW4-40.
Small but detectable chloroform concentrations at TW4-14 (from the fourth quarter of 2014
through the first quarter of2021; and during the third quarter of 2022) and at TW4-27 (since the
third quarter of 2015) suggest ongoing, but slow, downgradient migration of chloroform from the
southeastern extremity of the plume (near TW4-29 and TW4-33) into the low permeability
materials penetrated by TW4-14 and TW4-27. Pumping at TW4-41 is expected to reduce or
prevent future migration of chloroform toward these wells.
19
4.1.2 Comparison of Current Groundwater Contour Maps to Groundwater Contour
Maps for Previous Quarter
The groundwater contour map for the Mill site for the first quarter of 2023, as submitted with the
Chloroform Monitoring Report for the first quarter of 2023, is attached under Tab E. A
comparison of the water table contour maps for the current quarter (second quarter of 2023) to
the water table contour maps for the previous quarter (first quarter of 2023) indicates the
following: water level changes at the majority of site wells were small ( < 1 foot); and water
level contours have not changed significantly except in the vicinities of many of the nitrate and
chloroform pumping wells. Overall, total pumping capture is smaller than last quarter.
Drawdown patterns and overall capture associated with pumping of the original chloroform
pumping wells MW-4, MW-26, and TW4-19 have changed as additional groups of wells have
been added to the pumping network. A large expansion in capture occurred within a year of the
initiation of pumping at nitrate pumping wells TW4-22, TW4-24, TW4-25 and TWN-2 in the
first quarter of 2013. Additional large expansions occurred once chloroform pumping wells
TW4-l, TW4-2, TW4-l l, TW4-21 and TW4-37 became operational in 2015, and once TW4-39
became operational in the fourth quarter of 2016. Significant expansion of capture to the south
has resulted from pumping of TW4-41 since the second quarter of 2018 and from initiation of
pumping at TW 4-40 during the second quarter of 2019.
The drawdowns at chloroform pumping wells MW-4, MW-26, TW4-1, TW4-2 and TW4-4
increased by more than 2 feet this quarter, whereas drawdowns at chloroform pumping wells
TW 4-11 and TW 4-19; and at nitrate pumping well TWN-2; decreased by more than 2 feet this
quarter. Water level changes at other nitrate and chloroform pumping wells were 2 feet or less,
although both increases (decreases in drawdown) and decreases (increases in drawdown)
occurred. Water level fluctuations at pumping wells typically occur in part because of
fluctuations in pumping conditions just prior to and at the time the measurements are taken. The
reported water levels for chloroform pumping wells TW4-1, TW4-2 and TW4-1 l are below the
depth of the Brushy Basin contact this quarter.
Although both increases and decreases in drawdown occurred in pumping wells, the overall
apparent capture area of the combined pumping system is smaller than last quarter.
As discussed in Section 4.1.1, pumping at chloroform well TW4-4, which began in the first
quarter of 2010, depressed the water table near TW4-4, but a well-defined cone of depression
was not clearly evident until the third quarter of 2018, likely due to variable permeability
conditions near TW4-4 and the historically relatively low water level at adjacent well TW4-14.
The expanded cone of depression associated with TW4-4 and adjacent pumping well TW4-41
since the initiation of pumping at TW 4-41 in the second quarter of 2018 has contributed to
southerly expansion of total pumping system capture. As discussed above, southerly expansion
of capture was additionally enhanced in the second quarter of 2019 by the initiation of pumping
at TW4-40.
The water levels at Piezometers 1 through 5; and at TWN-1 and TWN-4 remained about the
same this quarter, with a maximum increase of 0.05 feet at PIEZ-1; and a maximum decrease of
20
0.01 feet at PIEZ-3A, PIEZ-5 and TWN-4. Water levels at these installations typically decrease
in response to cessation of water delivery to the wildlife ponds as discussed in Section 4.1.1 and
the consequent continuing decay of the associated perched water mounds.
Although typically variable, the reported water level at MW-20 remained about the same this
quarter; whereas last quarter, the reported water level at MW-20 increased by approximately 1.2
feet. Water level variability at this well has likely resulted from low permeability and variable
intervals between purging/sampling and water level measurement.
Measurable water was not reported at DR-22. Although DR-22 is typically dry, measurable
water was reported in the bottom of its casing between the second quarter of 2015 and the third
quarter of 2016. Similar to last quarter, measurable water was also not reported at DR-12.
Measurable water has not been reported at DR-12 since the end of 2021.
4.1.3 Hydrographs
Attached under Tab F are hydrographs showing groundwater elevation m each chloroform
contaminant investigation monitor well over time.
4.1.4 Depth to Groundwater Measured and Groundwater Elevation
Attached under Tab F are tables showing depth to groundwater measured and groundwater
elevation over time for each of the wells listed in Section 2.1.1 above.
4.1.5 Evaluation of the Effectiveness of Hydraulic Capture
Perched water containing chloroform has been removed from the subsurface by operating
chloroform pumping wells MW-4, MW-26 and TW4-19 since 2003; TW4-4 since 2010; TW4-1,
TW4-2, TW4-11, TW4-21 and TW4-37 since 2015; TW4-39 since the fourth quarter of 2016;
TW4-41 since the second quarter of 2018; and TW4-40 since the second quarter of 2019. TW4-
20 was also operated as a pumping well from 2005 until August, 2020 when it collapsed and was
subsequently abandoned. The primary purpose of pumping the above wells is to reduce total
chloroform mass in the perched zone as rapidly as is practical.
The original pumping wells up gradient of TW 4-4 were chosen because 1) they were located in
areas of the perched zone having relatively high permeability and saturated thickness, and 2)
high concentrations of chloroform were detected at these locations. The relatively high
transmissivity of the perched zone in the vicinity of these original pumping wells resulted in the
wells having a relatively high productivity. The combination of relatively high productivity and
high chloroform concentrations allowed for a high rate of chloroform mass removal. TW 4-4 and
TW 4-41 are located in a downgradient area having relatively high chloroform concentrations but
relatively small saturated thickness, and at a transition from relatively high to relatively low
permeability conditions downgradient of TW4-4. As with the other chloroform pumping wells,
pumping TW 4-4 and TW 4-41 helps to reduce the rate of chloroform migration in downgradient
portions of the plume.
21
Although pumping of TW4-6 and TW4-26 (located south ofTW4-4 and TW4-41) is impractical
due to low permeability and small saturated thicknesses, the permeability in the vicinity of TW 4-
40 (located south of TW4-26) is large enough to make pumping practical. TW4-40 is valuable in
that it is located within the downgradient (southern) toe of the plume and is relatively productive.
Pumping of TW 4-40 is likely to more effectively reduce or prevent further downgradient plume
migration than can be expected by pumping at the more upgradient locations.
The impact of chloroform pumping is indicated by the water level contour maps attached under
Tabs D and E. Cones of depression are evident in the vicinity of MW-4; and near MW-26,
TW4-19, TW4-37 and TW4-39. These wells continue to remove significant quantities of
chloroform from the perched zone. Relatively large cones of depression are also evident in the
vicinities of wells TW4-1 and TW4-2 (near MW-4); and at TW4-11. These wells began pumping
during the first quarter of 2015. As discussed in Section 4.1.1, although chloroform pumping
well TW4-4 became operational in 2010, the drawdown associated with TW4-4 was likely less
apparent due to variable permeability conditions near TW 4-4 and the persistently low water level
at adjacent well TW4-14. However, pumping at adjacent well TW4-41 since the second quarter
of 2018 has generally increased drawdowns in this area; the third quarter of 2018 was the first
quarter that a well-defined cone of depression was associated with TW4-4. As discussed in
Section 4.1.2 the combined pumping of TW 4-4 and TW 4-41, enhanced by initiation of pumping
at TW4-40 during the second quarter of 2019, has contributed to southerly expansion of total
pumping system capture. Overall, the water level contour maps indicate effective capture of
water containing high chloroform concentrations in the vicinities of the pumping wells.
Compared to last quarter, both increases and decreases in water levels occurred at nitrate and
chloroform pumping wells, although changes in water levels in chloroform pumping wells TW 4-
21, TW4-37, TW4-39, TW4-40 and TW4-41; and nitrate pumping wells TW4-22, TW4-24 and
TW4-25 were less than two feet. Water level decreases occurred in chloroform pumping wells
MW-4 (nearly 2.1 feet); MW-26 (nearly 4.2 feet); TW4-1 (nearly 2.3 feet); TW4-2 (nearly 11.4
feet); TW4-4 (approximately 3.1 feet); TW4-21 (approximately 1.3 feet); and TW4-40
(approximately 0.06 feet); and in nitrate pumping well TW4-25 (approximately 1.7 feet). Water
level increases occurred in chloroform pumping wells TW4-ll (approximately 9 feet); TW4-19
(nearly 4 feet); TW4-37 (approximately 1 foot); TW4-39 (approximately 1.1 feet); and TW4-41
nearly 0.9 feet; and in nitrate pumping wells TW4-22 (approximately 1.4 feet); TW4-24 (nearly
0.2 feet); and TWN-2 (nearly 5.9 feet).
Overall, the apparent combined capture area of the nitrate and chloroform pumping systems is
smaller than last quarter; capture decreased primarily within the northern portion of the pumping
system due to decreased drawdowns at nitrate pumping well TWN-2.
The capture associated with nitrate pumping wells and chloroform pumping wells added since
the beginning of 2015 is expected to generally increase over time as water levels continue to
decline due to cessation of water delivery to the northern wildlife ponds and continued pumping.
Slow development of hydraulic capture in the vicinities of many wells is consistent with and
expected based on the relatively low permeability of the perched zone at the site.
22
The hydraulic capture effectiveness of both chloroform and nitrate pumping systems depends to
some extent on the continued productivity of chloroform and nitrate pumping wells. Decreases in
productivity since the third quarter of 2014 have been noted in chloroform pumping well TW4-
19 and nitrate pumping well TW4-24. The impact of reduced productivity of these wells on
chloroform capture was discussed in Attachment N (Tab N) of the third quarter, 2015 report. The
report also included a discussion of the effectiveness of chloroform pumping on chloroform
capture. 'Background' flow through the chloroform plume was calculated in Attachment N as
approximately 3.3 gpm. A more refined 'background' flow calculation of 3.4 gpm was provided
in the CACME Report (See HGC, March 31, 2016: Corrective Action Comprehensive
Monitoring Evaluation Report, White Mesa Uranium Mill, Near Blanding, Utah).
Decreases in productivity at TW 4-4 since the third quarter of 2016 have been addressed by the
operation of adjacent pumping well TW4-41 since the second quarter of 2018.
Pumping from wells within and immediately adjacent to the chloroform plume during the current
quarter (from wells MW-4, MW-26, TW4-1, TW4-2, TW4-4, TW4-11, TW4-19, TW4-21,
TW4-22, TW4-24, TW4-37, TW4-39, TW4-40 and TW4-41) is approximately 4.2 gpm.
The pumping calculation is based on the total volume pumped by the above wells over the 90
day quarter (547,194 gallons) and accounts for times that the pumps are off due to insufficient
water columns in the wells. Pumping from these wells exceeds the calculated background flow
by 0.8 gpm or 24 % and is considered adequate at the present time even with the reduced
productivities of some wells and the abandonment of TW 4-20. In addition, because of continued
reductions in saturated thicknesses and hydraulic gradients resulting from reduced wildlife pond
recharge, 'background' flow through the plume is expected to continue to diminish, thereby
reducing the pumping needed to control the plume.
Chloroform concentrations at many locations have been or appear to be affected by changes
associated with reduced dilution from the wildlife ponds and nitrate pumping. For example,
increases in chloroform at TW4-22 and TW4-24 after these wells were converted to nitrate
pumping wells are attributable to westward migration of chloroform from the vicinity of TW 4-20
(now abandoned) toward these wells. The increase in concentration at TW4-8 from non-detect to
100 µg/L in the first quarter of 2014 is likely related to reduced dilution. The concentration at
TW 4-8 remained below 70 ug/L this quarter after dropping below 70 µg/L during the first
quarter of 2020. In addition, although the chloroform concentration in TW4-6 generally
decreased between the first quarter of 2015 and the current quarter (and remains outside the
plume), concentrations at TW 4-6 increased from approximately 6 µg/L in the first quarter of
2014 to 1,180 µg/L in the first quarter of 2015 before dropping to 2.3 µg/L this quarter. The
increase between the first quarter of 2014 and the first quarter of 2015 was likely related to both
reduced dilution and more westward flow induced by nitrate pumping.
TW 4-6 is located immediately south and historically cross-to downgradient of chloroform
pumping well TW4-4. TW4-6 has been incorporated into the chloroform plume twice: from the
first quarter of2009 through the third quarter of 2010; and from the third quarter of 2014 through
the second quarter of 2018. Pumping of TW4-6 (and TW4-26) is impractical because of
relatively low permeability and relatively small saturated thicknesses. However, pumping at
23
more productive locations upgradient of TW4-6 (such as TW4-4 and TW4-41) enhances mass
removal and lowers hydraulic gradients, thereby reducing the rate of downgradient chloroform
migration and allowing natural attenuation to be more effective. Pumping at TW 4-4 was
implemented during the first quarter of 2010 to improve capture downgradient of TW 4-4 to the
extent allowable by the lower productivity conditions present in this area.
The beneficial effect of pumping TW 4-4 was demonstrated by the net decreases in TW 4-6
chloroform concentrations from 1,000 µg/L to 10.3 µg/L, and in TW4-26 from 13 µg/L to 4.2
µg/L, between the initiation of TW4-4 pumping and the second quarter of 2014. Concentrations
at these wells decreased substantially even though they did not unambiguously appear to be
within the hydraulic capture of TW 4-4. As discussed in Section 4.1.1, however, the decrease in
the long-term rate of water level rise at TW4-6 after TW4-4 began pumping does suggest that
TW4-6 was within the hydraulic influence of TW4-4. The decline in water levels at TW4-6 since
the fourth quarter of 2013 likely reflects the additional influences of cessation of water delivery
to the wildlife ponds and the addition of chloroform pumping wells TW4-1, TW4-2, TW4-11
and TW 4-41. Regardless of whether TW 4-6 was demonstrably within the hydraulic capture of
TW4-4, pumping TW4-4, and more recently installed adjacent pumping well TW4-41, helps to
reduce chloroform migration to TW4-6, TW4-26, and other downgradient locations by the
mechanisms discussed above.
Likewise, pumping at other productive upgradient locations has a beneficial impact on
downgradient chloroform even if the downgradient chloroform is not completely within the
hydraulic capture of the productive upgradient well(s). For example, pumping at MW-26 likely
reduced chloroform concentrations at TW4-16 from a maximum of 530 µg/L in the second
quarter of2004 to less than 70 µg/L by the fourth quarter of 2005, and maintained concentrations
below 70 µg/L until the second quarter of 2014, even though TW 4-16 appears to be beyond the
hydraulic capture of MW-26. Furthermore, the overall hydraulic capture of the chloroform
pumping system has expanded since initiation of pumping at wells TW4-1, TW4-2, TW4-11,
TW4-21, TW4-37, TW4-39, TW4-40 and TW4-41 since the beginning of 2015. In particular, the
addition of wells TW4-1, TW4-2, TW4-11, TW4-21, TW4-37 and TW4-39 likely halted the
mid-2013 to end of 2014 increase in concentration at TW4-16 from non-detect to 387 µg/L.
Concentrations at TW4-16 dropped from 387 µg/L in the fourth quarter of 2014 to less than 70
µg/L by the second quarter of 2015. Although chloroform at TW 4-16 has been above and below
70 µg/L since 2014 and was detected at 227 µg/L this quarter, concentrations have generally
increased since 2018, likely in response to reduced dilution.
Chloroform exceeding 70 µg/L was detected in the second quarter of 2013 at TW4-29, installed
during the first quarter of 2013 and located south of TW4-27 and east of TW4-26. With respect
to historic groundwater flow directions implied by historic groundwater elevations in this area,
TW4-29 was positioned generally cross-gradient of TW4-4 and TW4-6. As discussed in Section
4.1.1, chloroform detected at TW4-29 may have migrated around the low permeability area
defined by TW4-27, TW4-14 and TW4-36. The apparent migration pathway from TW4-4 to
TW4-29 is consistent with chloroform exceeding 70 µg/L detected in the fourth quarter of 2013
at TW4-33, installed during the third quarter of 2013 and located between TW4-4 and TW4-29.
Chloroform concentrations at TW4-33 that are lower than concentrations at TW4-29, and the
24
likelihood that a pathway exists from TW4-4 to TW4-33 to TW4-29, suggest that concentrations
in the vicinity of TW4-33 were likely higher prior to initiation of TW4-4 pumping.
TW4-4 pumping (augmented by pumping at adjacent well TW4-41) has been expected to reduce
chloroform at both TW4-33 and TW4-29 by cutting off the source, with the impact at TW4-33
anticipated to be greater than at TW4-29 because TW4-33 is in closer proximity to TW4-4 (and
TW 4-41) pumping. By analogy, such behavior would be consistent with the decreases m
chloroform concentrations at TW4-6 and TW4-26 that occurred once TW4-4 pumping began.
However, for several quarters after installation, concentrations at both TW4-29 and TW4-33
were relatively stable (rather than decreasing). Between the third quarter of 2014 and the second
quarter of 2020, concentrations at TW4-29 generally increased; subsequently concentrations
stabilized then began to decrease. Over the same time period concentrations at TW4-33 remained
generally stable to decreasing. As discussed in Section 4.1.1, decreasing concentration trends at
both wells were eventually expected to occur. Since the third quarter of 2014, TW4-33
concentrations that have been relatively stable to decreasing; and TW4-29 concentrations that
generally increased before stabilizing then generally decreasing; appear consistent with these
expectations. Trends at these wells suggest that chloroform migration has been arrested at TW4-
33 by TW4-4 (and TW4-41) pumping and that previously increasing chloroform at TW4-29
resulted from a remnant of the plume that migrated past TW4-33 generally toward TW4-30. The
influence of TW4-4 pumping at the distal end of the plume is consistent with generally
decreasing water levels at both TW4-29 and TW4-33. However, as discussed in Section 4.1.1,
decreasing water level trends are also consistent with reduced wildlife pond seepage. The decay
of the groundwater mound associated with the southern wildlife pond, which is 3 to 4 times
closer to the southern extremity of the chloroform plume than the northern ponds, is likely to
have an impact on water levels within and adjacent to this portion of the plume.
As discussed in Section 4.1.1, generally decreasing water level trends at TW4-6 and TW4-26
(since about the fourth quarter of 2013), temporarily increased concentrations at TW4-6 (since
the first quarter of 2014) and increased concentrations at TW4-26 (since the third quarter of
2016), are also consistent with reduced wildlife pond seepage, in particular reduced seepage
from the southern wildlife pond. As the groundwater mound associated with the southern pond
decays, groundwater flow directions in the southern extremity of the plume have become more
southerly, and plume migration is turning more to the south. An increasingly southerly direction
of plume migration is consistent with increased concentrations at TW4-26 (from less than 10
µg/L in the third quarter of 2016 to 659 µg/L this quarter).
In addition, as in the area near TW4-29 and TW4-33, generally decreasing concentrations at
TW4-6 since the third quarter of 2015, and generally increased concentrations at TW4-26 since
the third quarter of 2016, suggest that TW4-4 (and TW4-41) pumping has arrested chloroform
migration between TW4-4 and TW4-6, and that increased chloroform at TW4-26 results from a
remnant of the plume that continues to migrate south from TW4-6 to TW4-26. The enhancement
of pumping in the vicinity of TW4-4 by the start-up ofTW4-41 pumping in the second quarter of
2018 has been expected to increase this apparent separation and to have resulted m
concentrations at TW4-6 dropping below 70 µg/L beginning in the third quarter of 2018.
25
Furthermore, small but detectable chloroform concentrations at TW4-14 (from the fourth quarter
of 2014 through the first quarter of 2021; and during the third quarter of 2022) and at TW4-27
(since the third quarter of 2015) suggest ongoing, but slow, downgradient migration of
chloroform from the southeastern extremity of the plume into the low permeability materials
penetrated by these wells. Because the chloroform concentration at TW4-30 dropped below 70
µg/L during the third quarter of 2022, TW4-30 again bounds the plume to the east of TW4-29.
Chloroform analytical results from TW4-35 (as discussed in Section 4.2.3) demonstrate that
chloroform is bounded to the southeast of TW4-29; and relatively recently installed well TW4-
43 bounds chloroform to the southeast of TW4-29 and TW4-30. From 2014 through 2019
chloroform concentrations at TW4-8 exceeded 70 µg/L and TW4-36 (non-detect for chloroform)
served as an eastern bounding well. However, since the end of 2019, chloroform at TW4-8
remained below 70 µg/L and continues to bound the chloroform plume to the east.
4.2 Review of Analytical Results
4.2.1 Current Chloroform Isoconcentration Map
Included under Tab J of this Report is a current chloroform isoconcentration map for the Mill
site. Details of the gridding procedure used to generate the chloroform isoconcentration map
(consistent with Part III.B.2.a through Part III.B.2.c of the GCAP) are provided in Tab L.
4.2.2 Chloroform Concentration Trend Data and Graphs
Attached under Tab K are tables summarizing values for all required parameters, chloride,
nitrate/nitrite, carbon tetrachloride, chloroform, chloromethane, and methylene chloride, for each
well over time.
Attached under Tab K are graphs showing chloroform concentration trends in each monitor well
over time.
4.2.3 Interpretation of Analytical Data
Comparing the chloroform analytical results to those of the previous quarter, as summarized in
the tables included under Tab K, the following observations can be made:
a) Chloroform concentrations have increased by more than 20% in the following wells
compared to last quarter: MW-26, TW4-4, TW4-6, TW4-16, TW4-19, TW4-21, TW4-
27, and TW4-39;
b) Chloroform concentrations decreased by more than 20% in the following well compared
to last quarter: TW4-24;
c) Chloroform concentrations have remained within 20% in the following wells compared
to last quarter: MW-4, TW4-l, TW4-2, TW4-5, TW4-7, TW4-8, TW4-9, TW4-10,
TW4-l l, TW4-18, TW4-22, TW4-26, TW4-29, TW4-30, TW4-33, TW4-34, TW4-37,
TW 4-40 and TW 4-41; and
26
d) Chloroform concentrations have remained non-detect in the following wells: MW-32,
TW4-3, TW4-12, TW4-13, TW4-14, TW4-23, TW4-25, TW4-28, TW4-31, TW4-32,
TW4-35, TW4-36, TW4-38, TW4-42 and TW4-43.
e) TW4-30 remained below 70 µg/L and continues to bound the plume to the east; and
f) Chloroform was detected for the third time at TW4-34 at a concentration of 1.2 µg/L.
As indicated, chloroform concentrations at many of the wells with detected chloroform were
within 20% of the values reported for the wells during the previous quarter, suggesting that
variations are within the range typical for sampling and analytical error. Wells MW-26, TW4-4,
TW4-6, TW4-16, TW4-19, TW4-21, TW4-24, TW4-27, and TW4-39 had changes in
concentration greater than 20%. Of these, MW-26, TW4-4, TW4-19, TW4-21 and TW4-39 are
chloroform pumping wells and TW4-24 is a nitrate pumping well. TW4-6 is located adjacent to
chloroform pumping well TW4-4; TW4-16 is located just within the plume margin adjacent to
chloroform pumping wells MW-26 and TW4-11; and TW4-27 is located just outside the
chloroform plume boundary. Fluctuations in concentrations at both chloroform and nitrate
pumping wells and wells adjacent to pumping wells likely result in part from changes in
pumping. In addition, fluctuations in concentrations are expected at wells located near the plume
margins (such as TW4-16 and TW4-27).
Chloroform pumping wells MW-4 (1,050 µg/L); TW4-l l (2,510 µg/L); TW4-37 (8,160 µg/L);
TW4-39 (3,330 µg/L); TW4-41 (1,040 µg/L); and nitrate pumping well TW4-22 (2,180 µg/L)
had the highest detected chloroform concentrations. Although pumping well TW4-20, formerly
located between pumping wells TW4-19 and TW4-37, would typically be distinguished as
having one of the highest concentrations, TW4-20 collapsed during August, 2020 and was
abandoned in October, 2020.
Since last quarter, the chloroform concentrations in MW-4 increased from 1,010 to 1,050 µg/L;
TW4-11 increased from 2,430 to 2,510 µg/L; TW4-37 increased from 8,010 to 8,160 µg/L; and
TW4-39 increased from 1,850 to 3,330 µg/L. In addition, the chloroform concentration in
chloroform pumping well TW4-21 increased from 526 to 768 µg/L; the concentration in
chloroform pumping well TW4-41 increased from 985 to 1,040 µg/L; the concentration in nitrate
pumping well TW4-22 increased from 1,900 to 2,180 µg/L; and the concentration in nitrate
pumping well TW4-24 decreased from 99.5 to 58.5 µg/L, bringing it just outside the plume
boundary this quarter. Nitrate pumping well TW4-25 remained non-detect. TW4-25, located
north ofTW4-21, bounds the chloroform plume to the north.
Chloroform at TW4-8 (which was non-detect from the first quarter of 2008 through the fourth
quarter of 2013) decreased from approximately 9.1 µg/L to approximately 8.3 µg/L, and
remained outside the plume. TW 4-8 is located immediately east of chloroform pumping well
MW-4, where chloroform was detected at a concentration of 1,050 µg/L. Although the plume
boundary remained between MW-4 and TW4-8 from the first quarter of 2005 through the fourth
quarter of 2013, TW4-8 was re-incorporated into the plume between the first quarter of 2014 and
the fourth quarter of 2019. Elevated chloroform at TW4-8 was bounded to the north by TW4-3
27
and TW4-38 (both non-detect), to the northeast by TW4-13 (non-detect), to the east by TW4-36
(non-detect), and to the southeast by TW4-14 (which has remained below 10 µg/L and is non-
detect this quarter). Although previously elevated, TW4-8 has remained outside of and has
bounded the plume since the end of 2019. Changes in the plume boundary near TW 4-8 are
expected to result from changes in pumping and reduced dilution resulting from cessation of
water delivery to the northern wildlife ponds.
Chloroform at TW4-29 (located at the southeastern extremity of the plume, to the east of TW4-
26 and to the south of TW4-27) increased from 467 µg/L to 490 µg/L; and chloroform at TW4-
30, located immediately cross-gradient of TW4-29, increased slightly from 45.5 µg/L to 47 µg/L,
remaining outside the plume. Chloroform at TW4-14 remained non-detect and chloroform at
TW4-27 increased from approximately 2 µg/L to 2.5 µg/L. Concentration trends at these wells
are generally consistent with ongoing, but slow, downgradient migration of chloroform at these
locations. For example, it took more than 51 quarters for detectable chloroform at TW4-4 to
migrate approximately 400 feet downgradient to TW4-14; and it took more than 30 quarters for
chloroform exceeding 70 µg/L at TW4-29 to migrate approximately 160 feet to TW4-30. In
addition, although TW4-30 was previously downgradient of TW4-29, due to long-term changes
in water levels in this area, TW4-30 is now generally cross-gradient of TW4-29.
Furthermore, as discussed in Section 4.1.1, increased concentrations at TW4-26 since the third
quarter of 2016 are also consistent with continuing downgradient chloroform migration which is
likely enhanced by the decay of the groundwater mound associated with the southern wildlife
pond. Increased concentrations at TW4-26 have widened the southeast extremity of the plume
which historically was narrow compared to more upgradient locations.
Chloroform at TW4-29 is bounded to the north by TW4-27 (approximately 2.5 µg/L), to the
southeast by TW4-35 (non-detect), to the south by TW4-34 (approximately 1.2 µg/L), and to the
west-northwest by TW4-6 (approximately 2.3 µg/L) and TW4-23 (non-detect). As discussed
above, TW4-30, with a concentration of 47 µg/L again bounds the plume to the east of TW4-29,
as it did prior to the fourth quarter of 2020. TW4-43, installed in September, 2021, served as a
new bounding well during the period that concentrations at TW4-30 exceeded 70 µg/L.
Continued monitoring will determine whether TW4-30 acts as a bounding well in the future.
Chloroform at TW4-33 (located between TW4-4 and TW4-29) showed an increase in
concentration, from approximately 48 µg/L to approximately 52 µg/L. TW4-33 has remained
outside the plume since the first quarter of 2021. Chloroform at TW4-33 is bounded to the north
by TW4-14 (non-detect), to the east by TW4-27 (approximately 2.5 µg/L), and to the west by
TW4-6 (approximately 2.3 µg/L) and TW4-23 (non-detect).
The chloroform concentration in TW 4-6 increased from approximately 1. 7 µg/L to 2.3 µg/L.
TW4-6 has remained outside the chloroform plume since the third quarter of 2018. Installed in
the second quarter of 2000, TW 4-6 was the most downgradient temporary perched well prior to
installation of TW4-23 in 2007 and TW4-26 in the second quarter of 2010. TW4-6 remained
outside the chloroform plume between installation in the second quarter of 2000 and the fourth
quarter of 2008 likely due to a combination of 1) slow rates of downgradient chloroform
migration in this area due to low permeability conditions and the effects of upgradient
28
chloroform removal by pumping, and 2) natural attenuation. TW4-6 was subsequently
incorporated into the plume twice: from the first quarter of 2009 through the third quarter of
2010; and from the third quarter of 2014 through the second quarter of 2018. Between initiation
of pumping of TW 4-4 in the first quarter of 2010 and the second quarter of 2014, concentrations
at TW4-6 showed a net decrease from 1,000 µg/L to 10.3 µg/L.
The relatively slow rate of chloroform migration in the vicinity of TW 4-6 in the past is
demonstrated by comparing the rate of increase in chloroform at this well to the rate of increase
in the nearest upgradient well TW4-4. Concentrations at TW4-4 increased from non-detect to
more than 2,200 µg/L within only two quarters whereas 16 quarters were required for
concentrations in TW 4-6 to increase from non-detect to only 81 µg/L. This behavior is consistent
with hydraulic tests performed at TW4-4, TW4-6, and TW4-26 during the third quarter of 2010
that indicate a nearly two orders of magnitude decrease in permeability south (downgradient) of
TW4-4. Chloroform migration rates in the vicinities of wells TW4-26, TW4-29 and TW4-33
have been expected to be relatively slow due to upgradient pumping and relatively low
permeability conditions. By analogy with the decreases in concentration at TW4-6 and TW4-26
that occurred after initiation of TW4-4 pumping, chloroform concentrations at both TW4-29 and
TW4-33 have been expected to eventually trend downward; and recent data are consistent with
this expectation.
Although changes in concentration have occurred in wells within the chloroform plume, the
boundaries of the plume have not changed significantly since the last quarter, except for a slight
contraction near TW4-24. The slight contraction was due to the chloroform concentration
decrease at TW4-24. As has been the case since the first quarter of 2020, due primarily to
decreases in concentrations at TW4-6 and TW4-33, the kriging algorithm has 'pinched off' the
southern extremity of the plume.
TW 4-9 remained outside the plume from the second quarter of 2019 through the first quarter of
2021; was temporarily re-incorporated within the plume during the second quarter of 2021; and
remains outside the plume again this quarter. TW 4-9 was incorporated into the plume from the
first quarter of 2016 until the first quarter of 2019 due to increased concentrations attributable to
reduced recharge (and dilution) from the northern wildlife ponds. Prior to the first quarter of
2016, however, TW4-9 was outside the plume except during the fourth quarter of 2014.
Nitrate pumping generally caused the western boundary of the northern portion of the
chloroform plume to migrate to the west toward TW4-24. Since the first quarter of 2014, TW4-
24 has been both inside and outside the plume and is just outside the plume this quarter. TW4-24
likely remained primarily outside the plume since 2014 due to initiation of TW 4-3 7 pumping in
the second quarter of2015 and reduced productivity at TW4-24 (since the third quarter of 2014).
Subsequent to the first quarter of 2014, generally higher concentrations at TW 4-6 and TW 4-16
(both of which were within the chloroform plume in the past) caused the plume boundary to
migrate to the southwest and temporarily re-incorporate both wells. This increase was likely
related to reduced dilution from cessation of water delivery to the northern wildlife ponds and
more westerly flow induced by nitrate pumping. In addition, concentrations at TW 4-6 are
expected to be influenced by reduced recharge at the southern wildlife pond and the decay of the
associated groundwater mound.
29
TW 4-6 has remained outside the plume since the third quarter of 2018 due to the general
decrease in chloroform concentrations since the third quarter of 2015, while (as discussed in
Section 4.1.5) TW4-16 has been both within and outside the plume. This quarter, although TW4-
6 remains outside the plume, TW 4-16 remains just within the plume.
The decreasing trend in chloroform concentrations at TW 4-6 since the third quarter of 2015, and
generally increased concentrations at TW 4-26 since the third quarter of 2016, suggest that TW 4-
4 pumping has arrested chloroform migration between TW 4-4 and TW 4-6, and that increased
chloroform at TW4-26 results from a remnant of the plume that continues to migrate south from
TW4-6 to TW4-26. This behavior is consistent with the apparent 'pinching-off of the southern
extremity of the plume since the end of 2019. Regardless, pumping at TW4-41, located adjacent
to TW4-4, and pumping at TW4-40, located just south (downgradient) of TW4-26, is expected to
reduce or halt plume expansion to the south.
Although the nitrate pumping system may redistribute chloroform within the plume and cause
changes in the chloroform plume boundaries, continued operation of the nitrate pumping system
is expected to enhance capture associated with the chloroform pumping system. Furthermore,
since the beginning of 2015, the addition of chloroform wells TW4-1, TW4-2, TW4-11, TW4-
21, TW4-37, TW4-39, TW4-40 and TW4-41 is expected to have a beneficial impact. Generally
reduced concentrations at TW4-6 (since the first quarter of 2015) and TW4-16 (since the fourth
quarter of 2014) after previous increases are likely the result of initiation of TW4-1, TW4-2, and
TW4-11 pumping during 2015. Maintaining reduced concentrations at TW4-6 is anticipated to
result from pumping at TW 4-41.
5.0 LONG TERM PUMP TEST AT MW-4, MW-26, TW4-19, TW4-20, AND TW4-4
OPERA TIO NS REPORT
5.1 Introduction
As a part of the investigation of chloroform contamination at the Mill site, EFRI has been
conducting a Long Term Pump Test on MW-4, TW4-19, MW-26, and TW4-20, and, since
January 31, 2010, TW 4-4. The purpose of the test is to serve as an interim action that will
remove a significant amount of chloroform-contaminated water while gathering additional data
on hydraulic properties in the area of investigation. TW4-20 collapsed in August of 2020 and
was abandoned in October 2020.
Beginning in January 2013, EFRI began long term pumping of TW4-22, TW4-24, TW4-25, and
TWN-02 as required by the Nitrate CAP, dated May 7, 2012 and the Stipulated Consent Order
(the "SCO") dated December 12, 2012. Because wells TW4-22, TW4-24, and TW4-25 are
chloroform program wells, they are included in this report and any chloroform removal realized
as part of this pumping is calculated and included in the chloroform quarterly reports.
Beginning on January 14, 2015, EFRI began long term pumping of TW4-1, TW4-2, and TW4-1 l
and began long term pumping ofTW4-21 and TW4-37 on June 9, 2015. Beginning in December
2016 EFRI began long term pumping of TW4-39. Beginning in April 2018 EFRI began long
term pumping ofTW4-41. Beginning in May 2019 EFRI began long term pumping ofTW4-40.
30
The following information documents the operational activities during the quarter.
5.2 Pump Test Data Collection
The long term pump test for MW-4 was started on April 14, 2003, followed by the start of
pumping from TW4-19 on April 30, 2003, from MW-26 on August 8, 2003, from TW4-20 on
August 4, 2005, from TW4-4 on January 31, 2010, and from TW4-22, TW4-24, and TW4-25 on
January 26, 2013. Personnel from Hydro Geo Chem, Inc. were on site to conduct the first phase
of the pump test and collect the initial two days of monitoring data for MW-4. EFRI personnel
have gathered subsequent water level and pumping data.
Analyses of hydraulic parameters and discussions of perched zone hydrogeology near MW-4 has
been provided by Hydro Geo Chem in a separate report, dated November 12, 2001, and in the
May 26, 2004 Final Report on the Long Term Pumping Test.
Data collected during the quarter included the following:
• Measurement of water levels at MW-4, TW4-1, TW4-2, TW4-4, TW4-11, TW4-
19, MW-26, TW4-21, TWN-2, TW4-22, TW4-24, TW4-25, TW4-37, TW4-39
TW 4-40, and TW 4-41 on a weekly basis, and at selected temporary wells and
permanent monitoring wells on a monthly basis.
• Measurement of pumping history, including:
-pumping rates
-total pumped volume
-operational and non-operational periods.
• Periodic sampling of pumped water for chloroform and nitrate/nitrite analysis and
other constituents.
5.3 Water Level Measurements
Beginning August 16, 2003, the frequency of water level measurements from MW-4, MW-26,
and TW4-19 was reduced to weekly. From commencement of pumping, and regularly after
March 1, 2010 for TW4-4, water levels in these wells have been measured weekly. From
commencement of pumping, water levels in wells TW4-1, TW4-2, TW4-11, TW4-21, TW4-22,
TW4-24, TW4-25, TW4-37, TW4-39, TW4-41, and TWN-2 have been measured weekly. Depth
to groundwater in all other chloroform contaminant investigation wells is monitored monthly.
Copies of the weekly Depth to Water monitoring sheets for MW-4, MW-26, TW4-1, TW4-2,
TW4-11, TW4-19, TW4-21, TW4-4, TW4-22, TW4-24, TW4-25, TW4-37, TW4-39, TW4-40
(beginning May 2019), TW4-41 and TWN-2 and the monthly Depth to Water monitoring sheets
for the chloroform contaminant investigation wells and the selected temporary wells and
permanent monitoring wells are included under Tab C. Monthly depth to water measurements for
the quarter are recorded in the Field Data Worksheets included under Tab C.
31
5.4 Pumping Rates and Volumes
Table G-2 summarizes the recovered mass of chloroform by well per quarter and historically
since the inception of the chloroform recovery program for the active pumping wells. It is
important to note that TWN-02 is a nitrate program well and is sampled only for nitrate and
chloride as required by the nitrate program. Because TWN-02 is not sampled or analyzed for
chloroform, the mass of chloroform recovered is not calculated.
The pumping wells do not pump continuously but are on a delay device. The wells purge for a
set amount of time and then shut off to allow the well to recharge. Water from the pumping wells
is transferred to a holding tank. The water in the holding tank is used in the Mill processes. The
pumping rates and volumes for each of the pumping wells are shown in Table G-3. Specific
operational problems observed with the well or pumping equipment which occurred during the
quarter are noted for each well below.
5.5 Mass Removed and Plume Residual Mass
Chloroform removal was estimated as of the first quarter 2007. Since that estimation, the mass
removed by well for each quarter has been compiled in Table G-2, which shows the pounds of
chloroform that have been removed to date. The mass of chloroform removed from the plume
this quarter is approximately 11.4 lb., which is approximately 93 % more than the approximately
5.9 lb. removed last quarter. The larger rate of mass removal is attributable primarily to the
increased concentrations at TW4-19.
The residual mass of chloroform within the plume is estimated as 928 lb. using the methodology
described in Appendix A of the GCAP ("Chloroform Plume Mass Calculation Method"). This is
nearly 484 lb. larger than last quarter's estimate of 444 lb, due to generally increased
concentrations within the plume, and primarily due to the increased concentrations at MW-26,
TW4-4, TW4-19 and TW4-39. As per Part III.B.2 of the GCAP, electronic files used in
calculating the mass estimate are provided with this report. Details of the procedure are provided
in Tab L.
The residual mass is plotted in Figure L.1. Subsequent residual plume mass estimates will be
calculated quarterly, added to the graph, and the trendline updated as per Part III.B.3 of the
GCAP.
As discussed in the CACME Report, the calculated chloroform mass has been larger since the
cessation of water delivery to the two northern wildlife ponds in the first quarter of 2012. These
ponds are located immediately upgradient of the chloroform plume. The increase in calculated
mass results from increased plume area and increased average concentrations within the plume.
The increases in both plume area and average concentrations are attributable to reduced dilution
due to the reduct!on in chloroform-free wildlife pond seepage.
However, the residual mass estimates have generally decreased since the second quarter of 2016
maximum estimate of 2,261 lb. suggesting stabilization and decline; and, although the residual
mass estimates have generally been larger since 2012, the rate of mass removed per quarter by
32
pumping has also been generally larger. Mass removal rates were particularly enhanced after the
addition of 5 new pumping wells in 2015; and the subsequent addition of 3 additional pumping
wells has helped maintain mass removal rates. Furthermore, although the pumping system is not
designed to hydraulically capture the entire plume, the proportion of the mass of the plume under
capture has historically been large. The proportion of the mass of the plume under capture during
the fourth quarters of 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021 and 2022
ranged from approximately 84% to 99%.
The approximate proportion of the mass of the plume under capture this quarter is 98 %, which is
larger than last quarter's approximately 96%. The increase is primarily attributable to the
increase in the plume mass caused by the increases in concentration at MW-26, TW4-4, TW4-19
and TW4-39. As a result, the proportion of mass within capture increased even though the areal
extent of capture within areas of the plume within which these wells are located remained about
the same as last quarter.
As discussed above, the residual mass estimates have been generally larger since the cessation of
water delivery to the two northern wildlife ponds in the first quarter of 2012; however, last
quarter's mass estimate (444 lb.) was less than the first quarter, 2012 mass estimate of 492 lb.
However, although larger, the current quarter's mass estimate is consistent with the general
decrease in residual mass estimates since the mid-2016 maximum estimate.
5.6 Inspections
All of the required inspections were completed, and the inspection forms are included in Tab C.
5.7 Conditions That May Affect Water Levels in Piezometers
No water was added to the any of the wildlife ponds during the quarter.
6.0 CORRECTIVE ACTION REPORT
No corrective actions were necessary for the current reporting period.
6.1 Assessment of Previous Quarter's Corrective Actions
There were no corrective actions required during the previous quarters' monitoring period.
7.0 CURRENT COMPLIANCE STATUS
7.1 Long Term Chloroform Plume Control
The chloroform plume is currently entirely within the Mill property boundary and is bounded on
all sides by wells having chloroform concentrations that are either non-detect or less than 70
µg/L (Tab J). The chloroform plume is bounded to the north by TW4-25 (non-detect); to the
west and southwest by MW-28 (non-detect), MW-31 (non-detect), MW-32 (non-detect), TW4-6
(approximately 2.3 µg/L) and TW4-23 (non-detect); to the east by TW4-3 (non-detect), TW4-5
(approximately 8 µg/L), TW4-8 (approximately 8 µg/L), TW4-9 (approximately 5 µg/L), TW4-
33
13 (non-detect), TW4-14 (non-detect), TW4-18 (approximately 55 µg/L), TW4-27
(approximately 2.5 µg/L), TW4-30 (approximately 47 µg/L), TW4-33 (nearly 52 µg/L); TW4-36
(non-detect) and TW4-38 (non-detect); to the south by TW4-34 (1.2 µg/L) and TW4-42 (non-
detect); and to the southeast by TW4-35 (non-detect) and TW4-43 (non-detect).
As discussed in Section 4.1.1, chloroform at 1.2 µg/L was detected at TW4-34 (located south and
cross-to downgradient of TW4-29). The current quarter's detection is the third detection of
chloroform at this well since the first detection during the third quarter of 2022. That chloroform
was detected at TW4-34 for the third time this quarter suggests that the detections may result
from slow downgradient plume migration.
In addition, chloroform is not detected at wells far to the south ( cross-to downgradient) and
southwest (cross-gradient) of the plume. MW-17 (non-detect) and MW-38 (non-detect) bound
the plume to the far southwest (cross-gradient); and MW-22 (non-detect), MW-39 (non-detect)
and MW-40 (non-detect) bound the plume far to the south (cross-to downgradient).
Because TW4-30 no longer bounded the plume immediately to the east due to increases in
concentration that brought TW4-30 into the plume for the first time during the fourth quarter of
2020, new bounding well TW4-43 was installed approximately 200 feet to the east-southeast of
TW4-30 during September, 2021. As indicated above, chloroform has not been detected at TW4-
43; and, due to decreases in chloroform concentrations since 2021, TW4-30 has been outside the
plume since the third quarter of 2022. Subsequent data will determine whether or not TW4-30
remains outside the plume and can serve (as in the past) as a bounding well.
Data collected to date indicate there are sufficient chloroform monitoring and pumping wells to
effectively define, control, and monitor the plume. In addition, site water level data indicate that
perched groundwater flow to the east of TW4-30, between TW4-30 and the eastern site property
boundary, is to the south-southwest; therefore it is unlikely that any chloroform within this
portion of the plume could ever migrate across the eastern property boundary. Furthermore,
chloroform in the vicinity of TW4-30 is migrating relatively slowly; it took more than 30
quarters for chloroform exceeding 70 µg/L at TW4-29 to migrate approximately 160 feet to
TW4-30. Due to long-term changes in water levels in this area, the former hydraulic gradient that
was directed from TW4-29 toward TW4-30 no longer exists; consequently, chloroform is no
longer expected to migrate from TW4-29 to TW4-30, consistent with the generally decreasing
trend in chloroform since 2021 that has brought TW4-30 outside the plume since the third
quarter of 2022. Finally, the groundwater flow direction in the immediate vicinity of TW4-30 is
now south-southeasterly, generally toward TW4-35 and TW4-43, both non-detect for
chloroform.
7 .2 Well Construction, Maintenance and Operation
Part II of the GCAP specifies that EFRI must construct, maintain and operate the chloroform
wells in accordance with the specifications delineated therein. The wells were maintained and
operated as required. Additional details regarding any specific pumping well operations and
maintenance issues noted during the quarter are discussed in Section 5.0 above.
34
7.3 Disposal of Extracted Groundwater
Part II of the GCAP requires that all extracted groundwater be disposed of in the tailings
management system or fed in the Mill process. All extracted groundwater was handled as
required by the GCAP.
7.4 Compliance Well Performance
Part ILG of the GCAP states that an exceedance of the compliance well performance standard is
defined as the presence of chloroform in any compliance monitoring well in excess of 70 ug/L
for two or more quarters.
The compliance well chloroform concentrations were below the 70 ug/L except as noted in
previous reports. The previously noted exceedances have been addressed in Plans and Time
Schedules. There are no new exceedances in Q2 2023.
7.5 Chloroform Plume Monitoring for Wells within 500 Feet of the Property Boundary
Currently there are no compliance wells within 500 feet of the property boundary.
8.0 CONCLUSIONS AND RECOMMENDATIONS
The residual mass of chloroform within the plume is estimated as 928 lb. using the methodology
described in Appendix A of the GCAP ("Chloroform Plume Mass Calculation Method"). This is
484 lb. more than last quarter's estimate of 444 lb., attributable to generally increased
concentrations within the plume, and primarily to increased concentrations at chloroform
pumping wells MW-26, TW4-4, TW4-19 and TW4-39. Since the third quarter of 2015, the
residual mass estimate trend is downward; and the current quarter's estimate of 928 lb. is
substantially lower than both the third quarter 2015 estimate of 1,712 lb., and the maximum of
2,261 lb. estimated for the second quarter of 2016.
In addition, although the residual mass estimates have generally been larger since cessation of
water delivery to the wildlife ponds in 2012, the previous quarter's (first quarter, 2023) mass
estimate (444 lb.) was less than the first quarter, 2012 mass estimate of 492 lb. The current
quarter's larger mass estimate, is, however, consistent with the general decrease in residual mass
estimates since the mid-2016 maximum.
The mass of chloroform removed from the plume this quarter by pumping, approximately 11.4
lb., is approximately 93 % larger than the mass removed last quarter (approximately 5.9 lb.). The
larger mass removal is attributable primarily to the increased concentrations at chloroform
pumping well TW 4-19.
The chloroform plume is currently entirely within the Mill property boundary and is bounded on
all sides by wells having chloroform concentrations that are either non-detect or less than 70
µg/L (Tab J). The chloroform plume is bounded to the north by TW4-25 (non-detect); to the
west and southwest by MW-28 (non-detect), MW-31 (non-detect), MW-32 (non-detect), TW4-6
(approximately 2.3 µg/L) and TW4-23 (non-detect); to the east by TW4-3 (non-detect), TW4-5
35
(approximately 8 µg/L), TW4-8 (approximately 8 µg/L), TW4-9 (approximately 5 µg/L), TW4-
13 (non-detect), TW4-14 (non-detect), TW4-18 (approximately 55 µg/L), TW4-27
(approximately 2.5 µg/L), TW4-30 (approximately 47 µg/L), TW4-33 (nearly 52 µg/L); TW4-36
(non-detect) and TW4-38 (non-detect); to the south by TW4-34 (1.2 µg/L) and TW4-42 (non-
detect); and to the southeast by TW4-35 (non-detect) and TW4-43 (non-detect).
Because TW4-30 no longer bounded the plume immediately to the east due to increases in
concentration that brought TW4-30 into the plume for the first time during the fourth quarter of
2020, new bounding well TW4-43 was installed approximately 200 feet to the east-southeast of
TW4-30 during September, 2021. As indicated above, chloroform has not been detected at TW4-
43. However, due to concentration decreases since 2021, TW4-30 has been outside the plume
since the third quarter of 2022, and again bounds the plume to the east. Subsequent data will
determine whether or not TW4-30 remains outside the plume and can serve (as in the past) as a
bounding well in the future.
Data collected to date indicate there are sufficient chloroform monitoring and pumping wells to
effectively define, control, and monitor the plume. In addition, site water level data indicate that
perched groundwater flow to the east of TW4-30, between TW4-30 and the eastern site property
boundary, is to the south-southwest; therefore it is unlikely that any chloroform within this
portion of the plume could ever migrate across the eastern property boundary. Furthermore,
chloroform in the vicinity of TW4-30 is migrating relatively slowly; it took more than 30
quarters for chloroform exceeding 70 µg/L at TW4-29 to migrate approximately 160 feet to
TW4-30. Due to long-term changes in water levels in this area, the former hydraulic gradient that
was directed from TW4-29 toward TW4-30 no longer exists; consequently, chloroform is no
longer expected to migrate from TW4-29 to TW4-30, consistent with the concentration decreases
since 2021 that have brought TW4-30 again outside the plume. Finally, the groundwater flow
direction in the immediate vicinity of TW4-30 is now south-southeasterly, generally toward
TW4-35 and TW4-43, both non-detect for chloroform.
The water level contour maps for the second quarter, 2023 indicate effective capture of water
containing high chloroform concentrations over most of the chloroform plume. Capture in the
southeastern portion of the plume (vicinity of MW-4) was enhanced by start-up of chloroform
pumping wells TW4-1, TW4-2, and TW4-11 during the first quarter of 2015. Capture in the
northwestern portion of the plume was enhanced by start-up of chloroform pumping wells TW4-
21 and TW4-37 during the second quarter of 2015; and of TW4-39 during the fourth quarter of
2016. Capture in the southernmost portion of the plume was enhanced by start-up of pumping at
TW4-41 during the second quarter of 2018 and of TW4-40 during the second quarter of 2019.
All pumping wells added since the beginning of 2015 have enhanced the effectiveness of
chloroform mass removal.
Although pumping began in the first quarter of 2010, a well-defined capture zone was not clearly
evident at chloroform pumping well TW4-4 until the third quarter of 2018. Increased drawdowns
in this area since the second quarter of 2018, and development of a definable capture zone, is
attributable to pumping at adjacent well TW4-41.
36
The capture zone associated with TW4-4 was likely obscured prior to the second quarter of 2018
by the historically relatively low water level at adjacent well TW4-14 and the two orders of
magnitude decrease in permeability south of TW4-4. However, as noted in previous reports,
between the first quarter of 2010 and the second quarter of 2014, decreases in chloroform
concentrations and the rate of water level rise at TW 4-6 (located downgradient of TW 4-4) likely
resulted from TW 4-4 pumping.
Cones of depression associated with the nitrate pumping wells became evident as of the fourth
quarter of 2013, and capture associated with the nitrate pumping is expected to continue to
develop. Overall, the apparent capture area of the combined chloroform and nitrate pumping
systems is smaller than last quarter, with capture decreasing within the northern portion of the
combined pumping system due primarily to decreased drawdowns at nitrate pumping well TWN-
2.
'Background' flow through the chloroform plume was calculated as approximately 3.4 gpm (See
HGC, March 31, 2016: Corrective Action Comprehensive Monitoring Evaluation [CACME]
Report, White Mesa Uranium Mill, Near Blanding, Utah). Pumping from wells within and
immediately adjacent to the chloroform plume during the current quarter (from wells MW-4,
MW-26, TW4-1, TW4-2, TW4-4, TW4-11, TW4-19, TW4-21, TW4-22, TW4-24, TW4-37,
TW4-39, TW4-40 and TW4-41) is approximately 4.2 gpm. The combined pumping rate of 4.2
gpm exceeds the calculated background flow by 0.8 gpm or 24 %, and is considered adequate at
the present time.
Chloroform concentrations at many of the wells with detected chloroform were within 20% of
the values reported during the previous quarter, suggesting that variations are within the range
typical for sampling and analytical error. Wells MW-26, TW4-4, TW4-6, TW4-16, TW4-19,
TW4-21, TW4-24, TW4-27, and TW4-39 had changes in concentration greater than 20%. Of
these, MW-26, TW4-4, TW4-19, TW4-21 and TW4-39 are chloroform pumping wells and TW4-
24 is a nitrate pumping well. TW4-6 is located adjacent to chloroform pumping well TW4-4;
TW4-16 is located just within the plume margin adjacent to chloroform pumping wells MW-26
and TW4-11; and TW4-27 is located just outside the chloroform plume boundary. Fluctuations
in concentrations at both chloroform and nitrate pumping wells and wells adjacent to pumping
wells likely result in part from changes in pumping. In addition, fluctuations in concentrations
are expected at wells located near the plume margins (such as TW4-16 and TW4-27).
Furthermore, changes in concentrations at chloroform wells are expected to result from
continued operation of the nitrate pumping system, as the capture associated with nitrate
pumping expands and flow directions change locally.
Chloroform pumping wells MW-4 (1,050 µg/L); TW4-11 (2,510 µg/L); TW4-37 (8,160 µg/L);
TW4-39 (3,330 µg/L); TW4-41 (1,040 µg/L); and nitrate pumping well TW4-22 (2,180 µg/L)
had the highest detected chloroform concentrations. Since last quarter, the chloroform
concentrations in MW-4 increased from 1,010 to 1,050 µg/L; TW4-11 increased from 2,430 to
2,510 µg/L; TW4-37 increased from 8,010 to 8,160 µg/L; and TW4-39 increased from 1,850 to
3,330 µg/L. In addition, the chloroform concentration in chloroform pumping well TW4-21
increased from 526 to 768 µg/L; the concentration in chloroform pumping well TW4-41
increased from 985 to 1,040 µg/L; the concentration in nitrate pumping well TW4-22 increased
37
from 1,900 to 2,180 µg/L; and the concentration in nitrate pumping well TW4-24 decreased from
99.5 to 58.5 µg/L, bringing it just outside the plume boundary this quarter. Nitrate pumping well
TW4-25 remained non-detect. TW4-25, located north of TW4-21, bounds the chloroform plume
to the north.
Chloroform at TW4-8 (which was non-detect from the first quarter of 2008 through the fourth
quarter of 2013) decreased from approximately 9.1 µg/L to approximately 8.3 µg/L, and
remained outside the plume. TW4-8 is located immediately east of chloroform pumping well
MW-4, where chloroform was detected at a concentration of 1,050 µg/L. Although the plume
boundary remained between MW-4 and TW 4-8 from the first quarter of 2005 through the fourth
quarter of 2013, TW4-8 was re-incorporated into the plume between the first quarter of 2014 and
the fourth quarter of 2019. Elevated chloroform at TW4-8 was bounded to the north by TW4-3
and TW4-38 (both non-detect), to the northeast by TW4-13 (non-detect), to the east by TW4-36
(non-detect), and to the southeast by TW4-14 (which has remained below 10 µg/L and is non-
detect this quarter). Although previously elevated, TW4-8 has remained outside of and has
bounded the plume since the end of 2019. Changes in the plume boundary near TW 4-8 are
expected to result from changes in pumping and reduced dilution resulting from cessation of
water delivery to the northern wildlife ponds.
Detectable chloroform concentrations at TW 4-14 (between the fourth quarter of 2014 and the
first quarter of2021; and during the third quarter of2022) and at TW4-27 (since the third quarter
of 2015) are consistent with continued, but slow, downgradient migration of chloroform from the
distal end of the plume (near TW4-29 and TW4-33) into the low permeability materials
penetrated by TW4-14 and TW4-27. Chloroform at TW4-14 remained non-detect and
chloroform at TW4-27 increased slightly from approximately 2 µg/L to 2.5 µg/L. Pumping at
TW 4-41 is expected to reduce or prevent future migration of chloroform toward these wells.
Concentration trends at TW4-29 (located at the southeastern extremity of the plume, to the east
ofTW4-26 and to the south of TW4-27); and at TW4-30 (located immediately east ofTW4-29),
are also generally consistent with ongoing, but slow, downgradient migration of chloroform.
Although previously downgradient of TW4-29, due to long-term changes in water levels in this
area, TW4-30 is now generally cross-gradient of TW4-29. Chloroform at TW4-29 increased
from 467 µg/L to 490 µg/L; and chloroform at TW4-30 increased slightly from approximately 46
µg/L to 4 7 µg/L, remaining just outside the plume. As discussed above, slow downgradient
migration is consistent with the more than 30 quarters needed for chloroform exceeding 70 µg/L
at TW4-29 to migrate approximately 160 feet to TW4-30 (although TW4-30 is again outside the
plume).
Chloroform at TW4-29 is bounded to the north by TW4-27 (approximately 2.5 µg/L), to the
southeast by TW4-35 (non-detect), to the south by TW4-34 (approximately 1.2 µg/L), and to the
west-northwest by TW4-6 (approximately 2.3 µg/L) and TW4-23 (non-detect). As discussed
above, TW4-30 no longer bounded the plume immediately to the east and TW4-43 has acted as a
new bounding well in this area; however, due to decreased concentrations, TW4-30 has bounded
the plume to the east since the third quarter of 2022. In addition, generally increased
concentrations at TW4-26 since the third quarter of 2016 are consistent with continuing
38
downgradient chloroform migration, which is likely enhanced by the decay of the groundwater
mound associated with the southern wildlife pond.
Chloroform at TW4-33 (located between TW4-4 and TW4-29), which has remained below 70
µg/L since the first quarter of 2021, showed an increase in concentration, from approximately 48
µg/L to approximately 52 µg/L. Chloroform at TW4-33 is bounded to the north by TW4-14
(non-detect), to the east by TW4-27 (approximately 2.5 µg/L), and to the west by TW4-6 (2.3
µg/L) and TW4-23 (non-detect).
Although changes in concentration have occurred in wells within the chloroform plume, the
boundaries of the plume have not changed significantly since the last quarter, except for a slight
contraction near TW4-24. The slight contraction was due to the chloroform concentration
decrease at TW4-24, bringing it just outside the plume. As has been the case since the first
quarter of 2020, due primarily to decreases in concentrations at TW4-6 and TW4-33, the kriging
algorithm has 'pinched off' the southern extremity of the plume.
TW4-9 remained outside the plume from the second quarter of 2019 through the first quarter of
2021; was temporarily re-incorporated within the plume during the second quarter of 2021; and
remains outside the plume again this quarter. TW4-9 was incorporated into the plume from the
first quarter of 2016 until the first quarter of 2019 due to increased concentrations attributable to
reduced recharge (and dilution) from the northern wildlife ponds. However, except for the fourth
quarter of 2014, TW4-9 was outside the plume prior to the first quarter of 2016. TW4-38 was
installed to the east-southeast of TW4-9 to serve as a bounding well when concentrations at
TW4-9 exceeded 70 µg/L.
Nitrate pumping generally caused the western boundary of the northern portion of the
chloroform plume to migrate to the west toward TW4-24. Since the first quarter of 2014, TW4-
24 has been both inside and outside the plume and is again just outside the plume this quarter.
TW4-24 likely remained primarily outside the plume since 2014 due to initiation of TW4-37
pumping in the second quarter of 2015 and reduced productivity at TW4-24 (since the third
quarter of 2014). Subsequent to the first quarter of 2014, generally increased concentrations at
TW4-6 and TW4-16 (both of which were within the chloroform plume in the past), caused the
plume boundary to migrate to the southwest and temporarily re-incorporate both wells. Increased
concentrations at these wells subsequent to the first quarter of 2014 are likely related to reduced
dilution from cessation of water delivery to the northern wildlife ponds and more westerly flow
induced by nitrate pumping. In addition, concentrations at TW4-6 are expected to be influenced
by reduced recharge at the southern wildlife pond and the decay of the associated groundwater
mound.
Since 2014, TW 4-16 has been both within and outside the plume; whereas a decreasing trend in
chloroform concentrations at TW4-6 (since the third quarter of2015) has once again taken TW4-
6 outside the plume. This quarter, TW4-16 and TW4-6 remain within and outside the plume,
respectively. Although chloroform at TW4-16 has been above and below 70 µg/L since 2014,
and was detected at 227 µg/L this quarter, concentrations have generally increased since 2018,
likely in response to reduced dilution.
39
The decreasing trend in chloroform concentration at TW 4-6 since the third quarter of 2015, and
generally increased concentrations at TW 4-26 since the third quarter of 2016, suggest that TW 4-
4 pumping has arrested chloroform migration between TW 4-4 and TW 4-6, and that the increased
chloroform at TW4-26 results from a remnant of the plume that continues to migrate south from
TW4-6 to TW4-26. Pumping at adjacent well TW4-41 since the second quarter of 2018 has
likely enhanced the decline in TW 4-6 concentrations to less than 70 µg/L.
Although the nitrate pumping system may redistribute chloroform within the plume and cause
changes in the chloroform plume boundaries, continued operation of the nitrate pumping system
is expected to enhance capture associated with the chloroform pumping system. Furthermore, the
addition of chloroform pumping wells TW4-1, TW4-2, TW4-11, TW4-21, TW4-37, TW4-39,
TW4-40 and TW4-41 since the beginning of 2015 is expected to have a beneficial impact.
Generally reduced concentrations at TW 4-6 ( since the third quarter of 2015) and TW 4-16 ( since
the fourth quarter of 2014) after previous increases are likely the result of initiation of TW4-1,
TW4-2, and TW4-11 pumping.
Continued operation of the original chloroform pumping wells (MW-4, MW-26, and TW4-19) is
recommended. Pumping these wells, regardless of any short-term fluctuations in concentrations
detected at the wells, helps to reduce downgradient chloroform migration by removing
chloroform mass and reducing hydraulic gradients, thereby allowing natural attenuation to be
more effective.
Continued operation of chloroform pumping well TW4-4, augmented by pumping at adjacent
well TW 4-41, is recommended to improve capture of chloroform to the extent practical in the
southern portion of the plume. The overall decrease in chloroform concentrations at TW4-6 from
1,000 µg/L in the first quarter of2010 to 10.3 µg/L in the second quarter of 2014 is likely related
to pumping at TW4-4. The decrease in the long-term rate of water level rise at TW4-6 once
TW 4-4 pumping began, which suggests that TW 4-6 is within the hydraulic influence of TW 4-4,
is also consistent with the decrease in chloroform concentrations at TW 4-6 between the first
quarter of 2010 and the second quarter of 2014. The decreasing trend in water levels beginning
in 2014 and, as noted above, the generally decreasing chloroform concentrations since the first
quarter of 2015 at TW 4-6 are also attributable in part to TW 4-4 ( augmented by TW 4-41)
pumpmg.
Continued operation of chloroform pumping wells TW4-1, TW4-2, TW4-11, TW4-21, TW4-37,
TW 4-3 9, TW 4-40 and TW 4-41 is also recommended because pumping these wells has increased
overall capture and improved chloroform mass removal. In particular, continued pumping of
TW4-37 (in conjunction with TW4-19) compensates for the loss of TW4-20; and pumping at
TW4-40 has expanded capture within the southern extremity of the plume.
Furthermore, because of the influence of TW4-4 pumping (augmented by TW4-41 pumping
since the second quarter of 2018), and by analogy with the concentration decreases at TW 4-6 and
TW4-26 that occurred after initiation of TW4-4 pumping, chloroform concentrations at TW4-29
and TW 4-3 3 have been expected to eventually trend downward. Since the third quarter of 2014,
TW4-33 concentrations that have been relatively stable to decreasing; and TW4-29
concentrations that generally increased before becoming relatively stable to decreasing; appear
40
consistent with these expectations. As discussed above, trends at these wells suggest that
chloroform migration has been arrested at TW4-33 by TW4-4 (and TW4-41) pumping and that
previously increasing chloroform at downgradient well TW4-29 resulted from a remnant of the
plume that migrated past TW4-33 generally toward TW4-30, which until recently was
downgradient of TW4-29, and which until the fourth quarter of 2020 bounded the plume to the
east. As discussed above, due to concentration decreases since 2021, TW4-30 again bounds the
plume to the east; and continued monitoring will determine whether it can function ( as in the
past) as a bounding well in the future.
The influence of TW 4-4 pumping at the distal end of the plume is consistent with decreasing
water levels at both TW4-29 and TW4-33. Pumping at adjacent well TW4-41 has been expected
to help maintain or enhance these decreasing trends in water levels and to augment the expected
eventual reductions in concentrations in the distal end of the plume. Continued evaluation of
trends at TW4-29 and TW4-33 will be provided in subsequent quarters.
EFRI and its consultants have raised the issues and potential effects associated with cessation of
water delivery to the northern wildlife ponds in March, 2012 during discussions with DWMRC
in March 2012 and May 2013. While past recharge from the ponds has helped limit many
constituent concentrations within the chloroform and nitrate plumes by dilution, the associated
groundwater mounding has increased hydraulic gradients and contributed to plume migration.
Since use of the northern wildlife ponds ceased in March 2012, the reduction in recharge and
decay of the associated groundwater mound has caused the expected decrease in hydraulic
gradients and the increases in constituent concentrations within the chloroform plume. Generally
increased chloroform concentrations at TW4-6 (between 2013 and 2020); and at TW4-8, TW4-9
and TW4-16 (since 2013), are likely related in part to reduced dilution (although concentrations
at TW 4-6 and TW 4-8 have been trending downward since the first quarter of 2015; and
concentrations at TW4-9 have been trending generally downward since the first quarter of 2018).
As discussed above, increased concentrations at TW 4-26 since the third quarter of 2016 that are
consistent with continuing downgradient chloroform migration are also likely enhanced by the
decay of the groundwater mound associated with the southern wildlife pond.
The net impact of reduced wildlife pond recharge has been expected to be beneficial even though
it was also expected to result in (temporarily) higher concentrations that would persist until
continued mass reduction via pumping and natural attenuation ultimately reduced concentrations.
Temporary increases in chloroform concentrations have been judged less important than reduced
chloroform migration rates. The evolution of the impacts of reduced recharge on concentrations
and plume migration rates will be defined by continued monitoring.
9.0 ELECTRONIC DATA FILES AND FORMAT
EFRI has provided to the Director an electronic copy of the laboratory results for groundwater
quality monitoring conducted under the chloroform contaminant investigation during the quarter,
in Comma Separated Values format. A copy of the transmittal e-mail is included under Tab M.
41
10.0 SIGNATURE AND CERTIFICATION
This document was prepared by Energy Fuels Resources (USA) Inc.
Energy Fuels Resources (USA) Inc.
By:
Scott A. Bakken Date
Vice President, Regulatory Affairs
42
Certification:
I certify, under penalty of law, that this document and all attachments were prepared
under'my direction or supervision in accordance with a system designed to assure that qualified
personnel properly gather and evaluate the information submitted. Based on my inquiry of the
person or persons who manage the system, or those persons directly responsible for gathering the
information, the information submitted is, to the best of my knowledge and belief, true, accurate,
and complete. I am aware that there are significant penalties for submitting false information,
including the possibility of fine and imprisonment for knowing violations.
Scott A. Bakken
Vice President, Regulatory Affairs
Energy Fuels Resources (USA) Inc.
43
Tables
Table 1: Summary of Well Sampling for the Period
Well Sample Date Date of Lab Report
MW-04 6/13/2023 6/28/2023
TW4-0l 6/13/2023 6/28/2023
TW4-02 6/13/2023 6/28/2023
TW4-03 6/15/2023 6/28/2023
TW4-03R 6/14/2023 6/28/2023
TW4-04 6/13/2023 6/28/2023
TW4-05 6/21/2023 6/30/2023
TW4-06 6/20/2023 6/30/2023
TW4-07 6/21/2023 6/30/2023
TW4-08 6/21/2023 6/30/2023
TW4-08R 6/20/2023 6/30/2023
TW4-09 6/21/2023 6/30/2023
TW4-10 6/21/2023 6/30/2023
TW4-11 6/13/2023 6/28/2023
TW4-12 6/15/2023 6/28/2023
TW4-13 6/15/2023 6/28/2023
TW4-14 6/15/2023 6/28/2023
MW-26 6/13/2023 6/28/2023
TW4-16 6/21/2023 6/30/2023
MW-32 6/14/2023 6/28/2023
TW4-18 6/21/2023 6/30/2023
TW4-19 6/13/2023 6/28/2023
TW4-21 6/13/2023 6/28/2023
TW4-22 6/13/2023 6/28/2023
TW4-23 6/20/2023 6/30/2023
TW4-24 6/13/2023 6/28/2023
TW4-25 6/13/2023 6/28/2023
TW4-26 6/21/2023 6/30/2023
TW4-27 6/21/2023 6/30/2023
TW4-28 6/15/2023 6/28/2023
TW4-29 6/21/2023 6/30/2023
TW4-30 6/21/2023 6/30/2023
TW4-31 6/15/2023 6/28/2023
TW4-32 6/15/2023 6/28/2023
TW4-33 6/21/2023 6/30/2023
TW4-34 6/20/2023 6/30/2023
TW4-35 6/20/2023 6/30/2023
TW4-36 6/15/2023 6/28/2023
TW4-37 6/13/2023 6/28/2023
TW4-38 6/20/2023 6/30/2023
TW4-39 6/13/2023 6/28/2023
TW4-40 6/13/2023 6/28/2023
TW4-41 6/13/2023 6/28/2023
TW4-42 6/15/2023 6/28/2023
TW4-43 6/15/2023 6/28/2023
TW4-60 6/13/2023 6/28/2023
TW4-65 6/15/2023 6/28/2023
TW4-70 6/20/2023 6/30/2023
TW4-75 6/21/2023 6/30/2023
All sample locations were sampled for Chloroform, Carbon Tetrachloride, Chloromethane, Methylene
Chloride, Chloride and Nitrogen.
Date in parantheses is the date the analytical data package was resubmitted by the laboratory. The
package was resubmitted to correct an error.
"R" following a well number deisgnates a rinsate sample collected prior to purging of the well of that
number.
TW4-60 is a DI Field Blank, TW4-65 is a duplicate ofTW4-42, and TW4-70 is a duplicate ofTW4-38
and TW4-75 is a duplicate ofTW4-09.
Highlighted wells are continuously pumped.
INDEX OF TABS
Tab A Site Plan and Perched Well Locations White Mesa Site
Tab B Order of Sampling and Field Data Worksheets
Tab C Weekly and Monthly Depth to Water Data
Tab D Kriged Current Quarter Groundwater Contour Map, Capture Zone Map, Capture Zone Details
Map, and Depth to Water Data
Tab E Kriged Previous Quarter Groundwater Contour Map
Tab F Depths to Groundwater and Elevations and Hydrographs of Groundwater Elevations over Time
for Chloroform Monitoring Wells
Tab G Chloroform Mass Removed and Volume Pumped in Chloroform Pumping Wells over Time
Tab H Laboratory Analytical Reports
Tab I Quality Assurance and Data Validation Tables
1-1 Field Data QA/QC Evaluation
1-2 Holding Time Evaluation
1-3 Receipt Temperature Check
1-4 Analytical Method Check
1-5 Reporting Limit Evaluation
1-6 Trip Blank Evaluations
1-7 QA/QC Evaluation for Sample Duplicates
1-8 QC Control Limits for Analyses and Blanks
1-9 Rinsate Check
Tab J Kriged Current Quarter Chloroform Isoconcentration Map
Tab K Analyte Concentration Data and Chloroform Concentration Trend Graphs over Time
Tab L Contour Map Based Chloroform Plume Mass Calculations and Data Over Time
Tab M CSV Transmittal Letter
Tab N Exceedance Notices for the Reporting Period
Tab A
Site Plan and Perched Well Locations White Mesa Site
1)11,1' .
MW-41B perched monitoring well -¢-installed April, 2023
TW4-43
~ temporary perched monitoring well
installed September, 2021
TWN-20
EJ temporary perched nitrate monitoring
well installed April, 2021
MW-24A perched monitoring well installed • December 2019
TW4-42
¢ temporary perched monitoring well
installed April 2019
TW4-40
EB perched chloroform pumping well
installed February 2018
TW4-19
EB perched chloroform or
nitrate pumping well
MW-5 • perched monitoring well
TW4-12 0 temporary perched monitoring well
TWN-7 temporary perched nitrate monitoring <> well
PIEZ-1 perched piezometer Q
RUIN SPRING
b seep or spring
.
I
I
,66;,10 DR•H . oo-f2 ' .
• '.~._1AI
MW~'J,I
DR-15 .
• "W•20
08~1 ~ ~ -• ,,
-HYDRO
GED
• CHEM.INC.
DR'13 ~ '
• MW-29
•
• MW--01
obohdo/1,0lf ()
liWN-OS"
Mt,i
0
uiom/oll"'f T\vt,~
.:Wn _ _,,
0 TYl~1I
TW~•U
INlff!d1111•d .,;
~ TW~.{)
""doi,,od 0
'IWlll-41,
TWli,10 ~n!!,1111r~ ,0 T\\ili--09
PIE2-G1
• 'ffl·1•
rv1~•2o;i:wt,01 JWN,18
~21
Ce .I 1
~w~·
.. MW._'10
Cell 3
Ml1,1
J
!(
ti)
lU • ~ MW..JI
~ --
o· \w~.oa
.~ •'rwl .rr2
~1-i1 ~&»S~t
M,41
Tv./~:o; • ,.Pa•ot
lW~_f ~i,
'4-.lfl
"!J'4-l't
.,... _.·-,;".~°' nv~a IP
'\WV4-1f TW"-11 ro,.,J 0 -~4,0i (a). l
J :a·s
• ~--t!,~w~
l.W.C:07@,0, .• \fl'! ·•.c.31,'
,WA.a\!,,
... J~~14 :J"ItiW4-3I ,,_JS . 1 ''ii>JW.44.Q . ..o -. " , 1 '!W<t-2!1 t:, IIFIWA-' 1W4'il/jilli Q-,TW4-35
'flN•:U~
eu:2,-0s-
~.:AO
TW~-1~
~-:::;c;;,-
~
\•~: M.W·2J.
WHITE MESA SITE PLAN SHOWING LOCATIONS OF
PERCHED WELLS AND PIEZOMETERS
APPROVED DATE REFERENCE FIGURE
H :/718000/aug23/Uwelloc0623. srf A-1
TabB
Order of Sampling and Field Data Worksheets
Order of Contamination for 2nd Quarter 2023 Chloroform Purging Event
Chloroform
Well Sample time Levels Rinsate date/time
TW4-03 f./15/,:J O"U> ND
TW4-42 w1sl.3 0'33 ND
TW4-12 ,/15/,-3 01,'#l ND
TW4-28 '-l•soo OC.6"f ND
TW4-32 t,/l§/2,3 0700 ND
TW4-13 "'1Sf?,3 o"7og ND
TW4-14 l,,J,5/,a o7LS ND
TW4-36 ',/lfa/pJ 01S5 ND
TW4-31 Wr'M oos ND
TW4-43 t5:•~ OjlJ ND
TW4-35 ~ 0"761 ND
TW4-23 '-lzo/U .)111 ND
TW4-38'i,/to/:Z., Q7f.O ND
TW4-25 <-1•'3/z.3 o,'fs ND
MW-32 "ll'l/;13 1110 ND
TW4-34 qz11k:) 0735 1.2
TW4-06 r..ltob:J 01'0 1.7
TW4-27 ~h.1/23 0/0't 2
TW4-09 L,/z11za· 0:1J&) 6.2
TW4-05 w'.r.\/23 Q7?,5 8.6
TW4-08 .. ,t,(2,3 c>7TI 9.1
TW4-30 Vr.t/,1..3 01'11 45.5 .,
TW4-33 Mr.1/rl 072) 47.7
TW4-18 '/'1.1{:KJ ()80'i 54.4
TW4-24 ,tr,12.3 oiSS 99.5
TW4-16 C.i~/'3 oU't 179
TW4-19 ,11itz, ,>t.lS 230
TW4-40 "13/Z:, ~ 259
TW4-10 ,121/.1,3 oi:m 361
TW4-29 f../ZJ/z;j Ofil.j'O 467
TW4-21 b(l,Al,3 0"135 526
MW-26 G/[l/2) O'llfO 571
TW4-07 '-/ZJ/23 6£51 619
TW4-26 t;/:ZI /Z.l 0101 703
TW4-02 ./13/p. Q'JSS 772
TW4-01 '-(13/13 1010 928
TW4-04 , fll/23 IU' 945
TW4-41 C../13/0 1011 985
MW-04 '9/13fZ:' tOQ3 1010
TW4-39 '°/11,Z, C>"l3b 1850
TW4-22 '-/13/1'; 0103 1900
TW4-ll ,113(23 01'1g 2430
TW4-37 t,/1iz:i.3 040,5 8010
TW4-60 DJ.Blank (,/13/~ 1300
TW4-65 Duplicate ,;,/t&/.l~ 0"33
TW4-70 Duplicate r../B>t;l;!J 01-ZO
TW4-75 Duplicate t.lil(~ 0115
Comments:
Water
level
Well
Depth
141
86
101.5
107
115.1
102.5
93
99
106
97.9
87.5
114
112.75
134.8 Cont. Pumping
130.6 Bladder pump
97.2
97.5
96
120
120
125
92.5
87.9
137.5
112.5 Cont. Pumping
146.3
125 Cont. Pumping
86 Cont. Pumping
111
93.5
121 Cont. Pumping
122.5 Cont. Pumping
120
86
120 Cont. Pumping
I 10 Cont. Pumping
112 Cont. Pumping
97.75 Cont. Pumping
124 cont. Pumping
120 Cont. Pumping
113.5 Cont. Pumping
100 Cont. Pumpine
112 Cont. Pumping
Groundwater Discharge Permit
<z-13--. -·. ~-l; ~
.... ,· 1 , , = ... ~y
'~ --· , ,' -=-r~•...,.
Groundwater Monitoring Quality Assurance Plan
White Mesa Mill
Field Data Worksheet For Groundwater
Location ID MW-04 Sampling Program Chloroform Monitoring
Field Sample ID MW-04 06132023 Sampling Event 2023 Q2 Chloroform
Purge Date & Time 6/13/2023 10:02
Sample Date & Time 6/13/2023 10:03 [sampler TH/DL
Purging Equipment Pump Weather Conditions Partly cloudy
Pump Type Grundfos External Ambient Temperature (C) 18
Purging Method 2 Casings Previous Well Sampled TW4-02
Casing Volume (gal) 14.72
Calculated Casing Volumes Purge Duration ()
pH Buffer 7.0 7.0 Well Depth (ft) 123.60
pH Buffer 4.0 4.0 Well Casing Diameter (in) 3
Specific Conductance (micromhos) 1000 Depth to Water Before Purging (ft) 83.49
Conductivity Dissolved
Date/Time Gallons Purged (um hos/cm) pH (pH Units) Temp (deg C) Redox (mV) Turbidity (NTU) Oxygen(%) Before/After
6/13/2023 10:03 1918 7.06 15.61 206 1.3 40.0
Pumping Rate Calculations
!Volume of water purged () Flow Rate (Q = S/60) (gal/min) 4.0
Time to evacuate 2 Casing Volumes ()
[Final Depth to Water (feet) 85.26 Number of casing Volumes
Volume, if well evacuated to dryness () 0
Name of Certified Analytical Laboratory
AWSL
Analytical Samples Information
Sample Container Preservative
Type of Sample/Analysis Collected? Matrix Number Type Sample Filtered? Type Added?
VOCs-Chloroform V WATER 3 40ml VOA u HCI (pH<2), 4 Deg C V
Chloride V WATER 1 500-ml Poly u None N
Nitrate/nitrite as N V WATER 1 250-ml HDPE u H2SO4 (pH<2), 4 Deg C V
Comments:
[ Arrived on site at 0958. Samples collected at 1003. Water was clear. Left site at 1005.
Signature of Field Technician
~ ,,,,,,,_,__-/~/-,-~-~~:)
Groundwater Discharge Permit --,~ -:,-~y~
Groundwater Monitoring Quality Assurance Plan
White Mesa Mill
Field Data Worksheet For Groundwater
Location ID TW4-01 Sampling Program Chloroform Monitoring
Field Sample ID TW4-01 06132023 Samplin!] Event 2023 Q2 Chloroform
Purge Date & Time 6/13/2023 10:09
Sample Date & Time 6/13/2023 10:10 [sampler TH/DL
Purging Equipment Pump Weather Conditions Partly cloudy
Pump Type Grundfos External Ambient Temperature (C) 18
Purging Method 2 Casings Previous Well Sampled MW-04
Casing Volume (gal) 6.00
Calculated Casing Volumes Purge Duration ()
pH Buffer 7.0 7.0 Well Depth (ft) 111.30
pH Buffer 4.0 4.0 Well Casing Diameter (in) 4
Specific Conductance (micromhos) 1000 Depth to Water Before Purging (ft) 102.11
Conductivity Dissolved
Date/Time Gallons Purged (um hos/cm) pH (pH Units) Temp (deg C) Redox (mV) Turbidity (NTU) Oxygen(%) Before/After
6/13/2023 10:10 2311 7.28 16.02 216 0 83.7
Pumping Rate Calculations I Volume of water ~rged () Flow Rate (Q = S/60) (gal/min) 12.5
Time to evacuate 2 Casing Volumes ()
[Final Depth to Water (feet) 109.08 Number of casing Volumes
Volume, if well evacuated to dryness () 0
Name of Certified Analytical ~boratory
AWSL
Analytical Samples Information
Sample Container Preservative
Type of Sample/Analysis Collected? Matrix Number Type Sample Filtered? Type Added?
VOCs-Chloroform y WATER 3 40ml VOA u HCI (pH<2), 4 Deg C y
Chloride y WATER 1 500-ml Poly u None N
Nitrate/nitrite as N y WATER 1 250-ml HDPE u H2SO4 (pH<2), 4 Deg C y
Comments:
[ Arrived on site at 1005. Samples collected at 1010. Water was clear. Left site at 1012.
Signature of Field Technician
~ , , ON"-'"----/-;/; 4¼~, <.,
Location ID
Field Sample ID
Purge Date & Time
Sample Date & Time
Purging Equipment
Pump Type
Purging Method
Casing Volume (gal)
,~ ...-~YFUEZ:S
Calculated Casing Volumes Purge Duration ()
pH Buffer 7.0
pH Buffer 4.0
Specific Conductance (micromhos)
Date/Time Gallons Purged
6/13/2023 9:55
[yolum~ of ~a!el'__Purged _()
[Final Depth to Water (feet)
Name of Certified Analytical Laboratory
AWSL
Analytical Samples Information
Type of Sample/ Analysis
voes-Chloroform
Chloride
Nitrate/nitrite as N
Comments:
Groundwater Discharge Permit
Groundwater Monitoring Quality Assurance Plan
White Mesa Mill
Field Data Worksheet For Groundwater
TW4-02 Sampling Program Chloroform Monitoring
TW4-02 06132023 Samplins:i_ Event 2023 Q2 Chloroform
6/13/2023 9:54
6/13/2023 9:55 [sampler TH/DL
Pump Weather Conditions Partly cloudy
Grundfos External Ambient Temperature (C) 17
2 Casings Previous Well Sampled TW4-11
14.65
7.0 Well Depth (ft) 120.90
4.0 Well Casing Diameter (in) 4
1000 Depth to Water Before Purging (ft) 98.46
Conductivity Dissolved
(umhos/cm) pH (pH Units) Temp (deg C) Redox (mV) Turbidity (NTU) Oxygen(%) Before/After
3930 7.01 16.10 225 2.0 84.9
Pumping Rate Calculations
Flow Rate (Q = S/60) (gal/min) 16.00
Time to evacuate 2 Casing Volumes ()
117.08 Number of casing Volumes
Volume, if well evacuated to dryness () 0
Sample Container Preservative
Collected? Matrix Number Type Sample Filtered? Type Added?
y WATER 3 40ml VOA u HCI (pH<2), 4 Deg C y
y WATER 1 500-ml Poly u None N
y WATER 1 250-ml HOPE u H2SO4 (pH<2), 4 Deg C y
I Arrived on site at 0951. Samples collected at 0955. Water was clear. Left site at 0957.
Signature of Field Technician
2 , , "'•'.X _ c"-;/'C -,~~~)
Groundwater Discharge Permit ,..::·~·-e~ .... -a· ~t·. 7
{-· •","'r' .--•,.: --.-: /' ·Y~fliF5P·s -··--1 . 1 ' ~
•• -J' 11
Groundwater Monitoring Quality Assurance Plan
White Mesa Mill
Field Data Worksheet For Groundwater
Location ID TW4-03 Sampling Program Chloroform Monitoring
Field Sample ID TW4-03 06152023 Sampling Event 2023 Q2 Chloroform
Purge Date & Time 6/14/2023 7:22
Sample Date & Time 6/15/2023 6:20 !sampler TH/DL
Purging Equipment Pump Weather Conditions Sunny
Pump Type Grundfos External Ambient Temperature (C) 12
Purging Method 2 Casings Previous Well Sampled MW-32
Casing Volume (gal) 48.66
Calculated Casing Volumes Purge Duration (min) 8.84
pH Buffer 7.0 7.0 Well Depth (ft) 140.30
pH Buffer 4.0 4.0 Well Casing Diameter (in) 4
Specific Conductance (micromhos) 1000 Depth to Water Before Purging (ft) 65.78
Conductivity Dissolved
Date/Time Gallons Purged (gal) (umhos/cm) pH (pH Units) Temp (deg C) Redox (mV) Turbidity (NTU) Oxygen(%) Before/After
6/14/2023 7:28 66.00 1854 6.63 14.68 392 4.2 80.0
6/15/2023 6:20 1820 6.58 16.65 Before
6/15/2023 6:21 1823 6.60 16.72 After
Pumping Rate Calculations
jvolume of water purged (gals) 66.00 Flow Rate (Q = S/60) (gal/min) 11.00
Time to evacuate 2 Casing Volumes (min) 6.00 I Final Depth to Water (feet) 137.21 Number of casing Volumes 1.35
Volume, if well evacuated to dryness ()
Name of Certified Analytical Laboratory
AWSL
Analytical Samples Information
Sample Container Preservative
Type of Sample/Analysis Collected? Matrix Number Type Sample Filtered? Type Added?
voes-Chloroform y WATER 3 40ml VOA u HCI (pH<2), 4 Deg C y
Chloride y WATER 1 500-ml Poly u None N
Nitrate/nitrite as N y WATER 1 250-ml HDPE u H2SO4 (pH<2), 4 Deg C y
Comments:
Arrived on site at 0718. Purge began at 0722. Purged well for a total of 6 minutes. Purged well dry. Water was clear. Purge ended at 0728. Left site at 0732. Arrived on site at 0616. Depth to water
was 65.90. Samples bailed and collected at 0620. Left site at 0623.
Signature of Field Technician
~ / /2~: / -----.J ✓ ,~r ..... ·--~ -1-:,: ---:..-'---d :fa)
Groundwater Discharge Permit
SF-.• --.. ' .... ~---·' . '\ ' . . ~·
'~/, ~y~
Groundwater Monitoring Quality Assurance Plan
White Mesa Mill
Field Data Worksheet For Groundwater
Location ID TW4-03R Sampling Program
Field Sample ID TW4-03R 06142023 Sampling_ Event 2023 Q2 Chloroform
Purge Date & Time
Sample Date & Time 6/14/2023 6:30 [sampler TH/DL
Purging Equipment Weather Conditions
Pump Type External Ambient Temperature ()
Purging Method Previous Well Sampled
Casing Volume ()
Calculated Casing Volumes Purge Duration ()
pH Buffer 7.0 Well Depth (ft)
pH Buffer 4.0 Well Casing Diameter()
Specific Conductance () Depth to Water Before Purging (ft)
Conductivity Dissolved
Date/Time Gallons Purged (gal) (um hos/cm) pH (pH Units) Temp (deg C) Redox (mV) Turbidity (NTU) Oxygen(%) Before/After
6/14/2023 6:30 133.00 0.2 6.85 20.60 265 1.8 19.2
Pumping Rate Calculations
[volume of water purged () Flow Rate (Q = S/60) O
Time to evacuate 2 Casing Volumes O
[Final Depth to Water (feet) Number of casing Volumes
Volume, if well evacuated to dryness ()
Name of Certified Analytical Laboratory
AWSL
Anal~ical_§amples Information
Sample Container Preservative
Type of Sample/ Analysis Collected? Matrix Number Type Sample Filtered? Type Added?
voes-Chloroform y WATER 3 40ml VOA u HCI (pH<2), 4 Deg C y
Chloride y WATER 1 500-ml Poly u None N
Nitrate/nitrite as N y WATER 1 250-ml HOPE u H2SO4 (pH<2), 4 Deg C y
Comments:
Signature of Field Technician
----. _ _,_,,,_ -✓ £: ,., ____;,,, '-"•'-""--,• / ' ~ , ,.., <")
Groundwater Discharge Permit ~'4•:::.m•~-s ~.--~ Groundwater Monitoring Quality Assurance Plan
White Mesa Mill
Field Data Worksheet For Groundwater
Location ID TW4-04 Sampling Program Chloroform Monitoring
Field Sample ID TW4-04 06132023 Sampling Event 2023 Q2 Chloroform
Purge Date & Time 6/13/2023 10:25
Sample Date & Time 6/13/2023 10:26 [sampler TH/DL
Purging Equipment Pump Weather Conditions Partly cloudy
Pump Type Grundfos External Ambient Temperature (C) 18
Purging Method 2 Casings Previous Well Sampled TW4-41
Casing Volume (gal) 18.62
Calculated Casing Volumes Purge Duration ()
pH Buffer 7.0 7.0 Well Depth (ft) 114.50
pH Buffer 4.0 4.0 Well Casing Diameter (in) 4
Specific Conductance (micromhos) 1000 Depth to Water Before Purging (ft) 85.98
Conductivity Dissolved
Date/Time Gallons Purged (um hos/cm) pH (pH Units) Temp (deg C) Redox (mV) Turbidity (NTU) Oxygen(%) Before/After
6/13/2023 10:26 2385 7.25 16.40 227 0 98.0
Pumping Rate Calculations
[volume of water purged () Flow Rate (Q = S/60) (gal/min) 16.00
Time to evacuate 2 Casing Volumes ()
[ Final Depth to Water (feet) 110.34 Number of casing Volumes
Volume, if well evacuated to dryness () 0
Name of Certified Analytical Laboratory
AWSL
Analytical Samples Information
Sample Container Preservative
Type of Sample/Analysis Collected? Matrix Number Type Sample Filtered? Type Added?
voes-Chloroform V WATER 3 40ml VOA u HCI (pH<2), 4 Deg C V
Chloride V WATER 1 500-ml Poly u None N
Nitrate/nitrite as N V WATER 1 250-ml HDPE u H2SO4 (pH<2), 4 Deg C V
Comments: I Arrived on site at 1022. Samples collected at 1026. Water was clear. Left site at 1028.
Signature of Field Technician
~---"\. -'_/ ./ /. / ....____J", -''-'--~ -r / ---e,L ;,:,<)
Groundwater Discharge Permit
g~~ "t..~· . · -. 1.:· ' . --_ .. --/_ . . . ,·j ~
' J ·'. • ~y~~ s
Groundwater Monitoring Quality Assurance Plan
White Mesa Mill
Field Data Worksheet For Groundwater
Location ID TW4-05 Sampling Pro_gram Chloroform Monitorin~
Field Sample ID TW4-05 06212023 Sampling Event 2023 Q2 Chloroform
Purge Date & Time 6/20/2023 9:14
Sample Date & Time 6/21/2023 7:25 [sampler TH/DL
Purging Equipment Pump Weather Conditions Sunny and windy
Pump Type Grundfos External Ambient Temperature (C) 21
Purging Method 2 Casings Previous Well Sampled TW4-09
Casing Volume (gal) 31.70
Calculated Casing Volumes Purge Duration (min) 5.76
pH Buffer 7.0 7.0 Well Depth (ft) 121.85
pH Buffer 4.0 4.0 Well Casing Diameter (in) 4
Specific Conductance (micromhos) 1000 Depth to Water Before Purging (ft) 73.30
Conductivity Dissolved
Date/Time Gallons Purged (gal) (umhos/cm) pH (pH Units) Temp (deg C) Redox (mV) Turbidity (NTU) Oxygen(%) Before/After
6/20/2023 9:18 44.00 1580 6.88 15.42 195 4.4 58.0
6/20/2023 9:19 55.00 1566 6.88 15.42 204 4.7 56.0
6/20/2023 9:20 66.00 1552 6.88 15.42 213 4.8 55.0
6/20/2023 9:21 77.00 1539 6.87 15.41 220 4.8 55.0
Pumping Rate Calculations
!Volume of water purged (gals) 77.00 Flow Rate (Q = S/60) (gal/min) 11.00
Time to evacuate 2 Casing Volumes (min) 7.00
[Final Depth to Water (feet) 74.47 Number of casing Volumes 2.00
Volume, if well evacuated to dryness () 0
Name of Certified Analytical Laboratory
AWSL
Analytical Sam_ples Information
Sample Container Preservative
Type of Sample/Analysis Collected? Matrix Number Type Sample Filtered? Type Added?
voes-Chloroform y WATER 3 40ml VOA u HCI (pH<2), 4 Deg C y
Chloride y WATER 1 500-ml Poly u None N
Nitrate/nitrite as N y WATER 1 250-ml HDPE u H2SO4 (pH<2), 4 Deg C y
Comments:
Arrived on site at 0910. Purge began at 0914. Purged well for a total of 7 minutes. Purge ended at 0921. Water was clear. Left site at 0923. Arrived on site at 0721. Depth to water was 73.42.
Samples bailed and collected at 0725. Left site at 0726.
Signature of Field Technician
---,._ . ./,;/ --.._______)',, ,.~,. _.,_____ -I-;/, --:".'.% ~ <:)
Groundwater Discharge Permit ~E,.,.,~' -';I
r " e
-~·'·~----~y~,r;;rs
Groundwater Monitoring Quality Assurance Plan
White Mesa Mill
Field Data Worksheet For Groundwater
Location ID TW4-06 Sampling Program Chloroform Monitoring
Field Sample ID TW4-06 06202023 Sampling Event 2023 Q2 Chloroform
Purge Date & Time 6/19/2023 14:25
Sample Date & Time 6/20/2023 7:43 [sampler TH/DL
Purging Equipment Pump Weather Conditions Sunny and windy
Pump Type Grundfos External Ambient Temperature (C) 27
Purging Method 2 Casings Previous Well Sampled TW4-34
Casing Volume (gal) 12.58
Calculated Casing Volumes Purge Duration (min) 2.28
pH Buffer 7.0 7.0 Well Depth (ft) 99.60
pH Buffer 4.0 4.0 Well Casing Diameter (in) 4
Specific Conductance (micromhos) 1000 Depth to Water Before Purging (ft) 80.33
Conductivity Dissolved
Date/Time Gallons Purged (gal) (um hos/cm) pH (pH Units) Temp (deg C) Redox (mV) Turbidity (NTU) Oxygen(%) Before/After
6/19/2023 14:26 13.75 3840 6.60 16.00 246 17.0 2.9
6/20/2023 7:43 3833 6.57 14.57 Before
6/20/2023 7:44 3834 6.58 14.56 After
Pumping Rate Calculations
[volume of water purged (ga_l!) 13.75 Flow Rate (Q = S/60) (gal/min) 11.00
Time to evacuate 2 Casing Volumes (min) 1.25
[Final Depth to Water (feet) 96.88 Number of casing Volumes 1.09
Volume, if well evacuated to dryness (gals) 13.75
Name of Certified Analytical Laboratory
AWSL
Analytical Samples Information
Sample Container Preservative
Type of Sample/Analysis Collected? Matrix Number Type Sample Filtered? Type Added?
VOCs-Chloroform y WATER 3 40ml VOA u HCI (pH<2), 4 Deg C y
Chloride y WATER 1 500-ml Poly u None N
Nitrate/nitrite as N y WATER 1 250-ml HDPE u H2SO4 (pH<2), 4 Deg C y
Comments:
Arrived on site at 1421 . Purge began at 1425. Purged well for a total of 1 minute and 15 seconds. Purged well dry. Purge ended at 1426. Water was mostly clear. Left site at 1429. Arrived on site at
0739. Depth to water w_as 80.85. Samples bailed and collected at 07 43. Left site at 07 45.
Signature of Field Technician
~u,c=-~-J-/--C/~
Groundwater Discharge Permit -· -~ ...--~y~
Groundwater Monitoring Quality Assurance Plan
White Mesa Mill
Field Data Worksheet For Groundwater
Location ID TW4-07 Sampling Program Chloroform Monitoring
Field Sample ID TW4-07 06212023 Sampling Event 2023 Q2 Chloroform
Purge Date & Time 6/20/2023 13:34
Sample Date & Time 6/21/2023 8:51 [sampler TH/DL
Purging Equipment Pump Weather Conditions Sunny and windy
Pump Type Grundfos External Ambient Temperature (C) 26
Purging Method 2 Casings Previous Well Sampled TW4-29
Casing Volume (gal) 25.00
Calculated Casing Volumes Purge Duration (min) 4.54
pH Buffer 7.0 7.0 Well Depth (ft) 121.00
pH Buffer 4.0 4.0 Well Casing Diameter (in) 4
Specific Conductance (micromhos) 1000 Depth to Water Before Purging (ft) 82.70
Conductivity Dissolved
Date/Time Gallons Purged (gal) (um hos/cm) pH (pH Units) Temp (deg C) Redox (mV) Turbidity (NTU) Oxygen(%) Before/After
6/20/2023 13:39 55.00 1681 6.88 15.11 253 25.0 35.7
6/21/2023 8:51 1375 7.19 14.88 Before
6/21/2023 8:52 1384 7.19 14.91 After
Pumping Rate Calculations
[volume of water purged (gals) 55.00 Flow Rate (Q = S/60) (gal/min) 11.00
Time to evacuate 2 Casing Volumes (min) 5.00
[Final Depth to Water (feet) 117.23 Number of casing Volumes 2.00
Volume, if well evacuated to dryness (gals) 55.00
Name of Certified Analytical Laboratory
AWSL
Analytical Samples Information
Sample Container Preservative
Type of Sample/Analysis Collected? Matrix Number Type Sample Filtered? Type Added?
voes-Chloroform y WATER 3 40ml VOA u HCI (pH<2), 4 Deg C y
Chloride y WATER 1 500-ml Poly u None N
Nitrate/nitrite as N y WATER 1 250-ml HDPE u H25O4 (pH<2), 4 Deg C y
Comments:
Arrived on site at 1330. Purge began at 1334. Purged well for a total of 5 minutes. Purged well dry. Water was a little murky. Purge ended at 1339. Left site at 1342. Arrived on site at 0847. Depth to
water was 85.82. Samples bailed and collected at 0851. Left site at 0853.
Signature of Field Technician
~ vcNA_,. -J-/ -,~:✓.::_,~ -<,,
Groundwater Discharge Permit
t.-~ ~ ~-~~y~
Groundwater Monitoring Quality Assurance Plan
White Mesa Mill
Field Data Worksheet For Groundwater
Location ID TW4-08 Sampling Program Chloroform Monitoring
Field Sample ID TW4-08 06212023 Sampling Event 2023 Q2 Chloroform
Purge Date & Time 6/20/2023 9:49
Sample Date & Time 6/21/2023 7:33 [sampler TH/DL
Purging Equipment Pump Weather Conditions Sunny and windy
Pump Type Grundfos External Ambient Temperature (C) 22
Purging Method 2 Casings Previous Well Sampled TW4-05
Casing Volume (gal) 26.74
Calculated Casing Volumes Purge Duration (min) 4.86
pH Buffer 7.0 7.0 Well Depth (ft) 126.20
pH Buffer 4.0 4.0 Well Casing Diameter (in) 4
Specific Conductance (micromhos) 1000 Depth to Water Before Purging (ft) 85.24
Conductivity Dissolved
Date/Time Gallons Purged (gal) (um hos/cm) pH (pH Units) Temp (deg C) Redox (mV) Turbidity (NTU) Oxygen(%) Before/After
6/20/2023 9:52 33.00 4530 6.63 15.20 207 5.0 2.1
6/20/2023 9:53 44.00 4531 6.62 15.17 215 4.9 2.1
6/20/2023 9:54 55.00 4530 6.61 15.15 222 4.7 2.3
6/20/2023 9:55 66.00 4529 6.61 15.15 227 4.6 2.3
Pumping Rate Calculations I Volume of water purged (gals) 66.00 Flow Rate (Q = S/60) (gal/min) 11.00
[f inc!I Depth to Water (feet) 110.37
Time to evacuate 2 Casing Volumes (min) 6.00
Number of casing Volumes 2.00
Volume, if well evacuated to dryness () 0
Name of Certified Analytical Laboratory
AWSL
Analytical Samples Information
Sample Container Preservative
Type of Sample/Analysis Collected? Matrix Number Type Sample Filtered? Type Added?
VO Cs-Chloroform y WATER 3 40ml VOA u HCI (pH<2), 4 Deg C y
Chloride y WATER 1 500-ml Poly u None N
Nitrate/nitrite as N y WATER 1 250-ml HDPE u H2SO4 (pH<2), 4 Deg C y
Comments:
Arrived on site at 0945. Purge began at 0949. Purged well for a total of 6 minutes. Purge ended at 0955. Water was clear. Left site at 0958. Arrived on site at 0728. Depth to water was 85.44. Samples
bailed and collected at 0733. Left site at 0734.
Signature of Field Technician
--,__ .-. .,,-,:·-.; ./ --...__ _)" , ,,.r -'---I/'.--,,:/ ="-) <.
Groundwater Discharge Permit
El.-' r .•
· .. ~Y~
Groundwater Monitoring Quality Assurance Plan
White Mesa Mill
Field Data Worksheet For Groundwater
Location ID TW4-08R Sampling Program
Field Sample ID TW4-08R 06202023 Sampling Event 2023 Q2 Chloroform
Purge Date & Time
Sample Date & Time 6/20/2023 9:40 [s ampler TH/DL
Purging Equipment Weather Conditions
Pump Type External Ambient Temperature O
Purging Method Previous Well Sampled
Casing Volume ()
Calculated Casing Volumes Purge Duration ()
pH Buffer 7.0 Well Depth (ft)
pH Buffer 4.0 Well Casing Diameter()
Specific Conductance () Depth to Water Before Purging (ft)
Conductivity Dissolved
Date/Time Gallons Purged (gal) (um hos/cm) pH (pH Units) Temp (deg C) Redox (mV) Turbidity (NTU) Oxygen(%) Before/After
6/20/2023 9:39 133.00 2.3 7.55 20.46 184 0 26.9
[volume of water purged ()
Pumping Rate Calculations
Flow Rate (Q = S/60) ()
Time to evacuate 2 Casing Volumes ()
[ Final Depth to Water (feet) Number of casing Volumes
Volume, if well evacuated to dryness ()
Name of Certified Analytical Laboratory
AWSL
Analytical Samples Information
Sample Container Preservative
Type of Sample/Analysis Collected? Matrix Number Type Sample Filtered? Type Added?
VOCs-Chloroform y WATER 3 40ml VOA u HCI (pH<2), 4 Deg C y
Chloride y WATER 1 500-ml Poly u None N
Nitrate/nitrite as N y WATER 1 250-ml HOPE u H2SO4 (pH<2), 4 Deg C y
Comments:
Signature of Field Technician
~ , , CN-'---/";J'; -a~)
Groundwater Discharge Permit
-1 ~ Groundwater Monitoring Quality Assurance Plan
White Mesa Mill { . ~-. Field Data Worksheet For Groundwater
Location ID TW4-09 Sampling Program Chloroform Monitorin_g_
Field Sample ID TW4-09_06212023 Sampling_ Event 2023 Q2 Chloroform
Purge Date & Time 6/20/2023 8:44
Sample Date & Time 6/21/2023 7:15 [sampler TH/DL
Purging Equipment Pump Weather Conditions Sunny and windy
Pump Type Grundfos External Ambient Temperature (C) 19
Purging Method 2 Casings Previous Well Sampled TW4-27
Casing Volume (gal) 31.83
Calculated Casing Volumes Purge Duration (min) 5.78
pH Buffer 7.0 7.0 Well Depth (ft) 120.10
pH Buffer 4.0 4.0 Well Casing Diameter (in) 4
Specific Conductance (micromhos) 1000 Depth to Water Before Purging (ft) 71.35
Conductivity Dissolved
Date/Time Gallons Purged (gal) (umhos/cm) pH (pH Units) Temp (deg C) Redox (mV) Turbidity (NTU) Oxygen(%) Before/After
6/20/2023 8:48 44.00 2487 6.70 15.10 213 10.0 1.0
6/20/2023 8:49 55.00 2482 6.69 15.09 219 10.0 1.0
6/20/2023 8:50 66.00 2470 6.68 15.09 223 11.0 1.0
6/20/2023 8:51 77.00 2462 6.68 15.08 227 11.0 1.0
Pumping Rate Calculations
!Volume of water purged (gals) 77.00 Flow Rate (Q = S/60) (gal/min) 11.00
Time to evacuate 2 Casing Volumes (min) 7.00 I Final Depth to Water (feet) 73.03 Number of casing Volumes 2.00
Volume, if well evacuated to dryness () 0
Name of Certified Analytical Laboratory
AWSL
Analytical Samples Information
Sample Container Preservative
Type of Sample/Analysis Collected? Matrix Number Type Sample Filtered? Type Added?
voes-Chloroform y WATER 3 40ml VOA u HCI (pH<2), 4 Deg C y
Chloride y WATER 1 500-ml Poly u None N
Nitrate/nitrite as N y WATER 1 250-ml HDPE u H2SO4 (pH<2), 4 Deg C y
Comments:
Arrived on site at 0840. Purge began at 0844. Purged well for a total of 7 minutes. Purge ended at 0851. Water was clear. Left site at 0854. Arrived on site at 0711. Depth to water was 71.46. Samples
bailed and collected at 0715. Left site at 0717.
Signature of Field Technician
~ ,,U'J'>~-r:/-cc'.2~
Groundwater Discharge Permit g E!--~~-' ,: /;.-
~-.'• /,' , ~y~
Groundwater Monitoring Quality Assurance Plan
White Mesa Mill
Field Data Worksheet For Groundwater
Location ID TW4-10 Sampling Program Chloroform Monitoring
Field Sample ID TW4-10 06212023 Sampling Event 2023 Q2 Chloroform
Purge Date & Time 6/20/2023 12:31
Sample Date & Time 6/21/2023 8:30 !sampler TH/DL
Purging Equipment Pump Weather Conditions Sunny and windy
Pump Type Grundfos External Ambient Temperature (C) 25
Purging Method 2 Casings Previous Well Sampled TW4-16
Casing Volume (gal) 27.76
Calculated Casing Volumes Purge Duration (min) 5.04
pH Buffer 7.0 7.0 Well Depth (ft) 113.20
pH Buffer 4.0 4.0 Well Casing Diameter (in) 4
Specific Conductance (micromhos) 1000 Depth to Water Before Purging (ft) 70.68
Conductivity Dissolved
Date/Time Gallons Purged (gal) (umhos/cm) pH (pH Units) Temp (deg C) Redox (mV) Turbidity (NTU) Oxygen(%) Before/After
6/20/2023 12:34 38.50 2527 6.40 15.55 324 30.0 15.3
6/21/2023 8:30 2472 6.67 14.76 Before
6/21/2023 8:31 2485 6.67 14.72 After
Pumping Rate Calculations
[volume of water purged (gals) 38.50 Flow Rate (Q = S/60) (gal/min) 11.00
[F_inal_l)epth to Water (feet) 104.68
Time to evacuate 2 Casing Volumes (min) 3.50
Number of casing Volumes 1.38
Volume, if well evacuated to dryness (gals) 38.50
Name of Certified Analytical Laboratory
AWSL
Analytical Samples Information
Sample Container Preservative
Type of Sample/Analysis Collected? Matrix Number Type Sample Filtered? Type Added?
voes-Chloroform y WATER 3 40ml VOA u HCI (pH<2), 4 Deg C y
Chloride y WATER 1 500-ml Poly u None N
Nitrate/nitrite as N y WATER 1 250-ml HOPE u H2SO4 (pH<2). 4 Deg C y
Comments:
Arrived on site at 1227. Purge began at 1231. Purged well for a total of 3 minutes and 30 seconds. Purged well dry. Water was a little murky. Purge ended at 1234. Left site at 1237. Arrived on site at
0827. Depth to water was 70.76. Samples bailed and collected at 0830. Left site at 0833.
Signature of Field Technician
-------.' / /2-; / ___ _)_-",, ~n. ... ~ ....... ~ -,:r---:; #. -,__,_-e..,_ ~ ~, <
~e~i----~ .~ -. ~
·._. !·· ,~Y~
. -J
Location ID
Field Sample ID
Purge Date & Time
Sample Date & Time
Purging Equipment
Pump Type
Purging Method
Casing Volume (gal)
Calculated Casing Volumes Purge Duration ()
pH Buffer 7.0
pH Buffer 4.0
Specific Conductance (micromhos)
Date/Time Gallons Purged
6/13/2023 9:48
[volume of water purged ()
[ Final Depth to Water (feet)
Name of Certified Analytical Laboratory
AWSL
Analytical Samples Information
Type of Sample/Analysis
voes-Chloroform
Chloride
Nitrate/nitrite as N
Comments:
Sheet 19 of 49
White Mesa Mill
Groundwater Discharge Permit
Groundwater Monitoring Quality Assurance Plan
Field Data Worksheet For Groundwater
TW4-11 Sampling Pro_g_ram Chloroform Monitoring
TW4-11 06132023 Sampling Event 2023 Q2 Chloroform
6/13/2023 9:47
6/13/2023 9:48 [sampler TH/DL
Pump Weather Conditions Partly cloudy
Grundfos External Ambient Temperature (C) 17
2 Casings Previous Well Sampled MW-26
8.24
7.0 Well Depth (ft) 102.40
4.0 Well Casing Diameter (in) 4
1000 Depth to Water Before Purging (ft) 89.78
(umhos/cm) pH (pH Units) Temp (deg C) Redox (mV) Turbidity (NTU) Oxygen(%) I Before/After
3706 7.08 17.20 213 0 93.0
Pumping Rate Calculations
Flow Rate (Q = S/60) (gal/min) 16.00
Time to evacuate 2 Casing Volumes ()
100.24 Number of casing Volumes
Volume, if well evacuated to dryness () 0
Sample Container Preservative
Collected? Matrix Number Type Sample Filtered? Type Added?
y WATER 3 40mlVOA u HCI (pH<2), 4 Deg C y
y WATER 1 500-mL Poly u None N
y WATER 1 250-mL HOPE u H2S04 (pH<2), 4 Deg C y
[ Arrived on site at 0944. Samples collected at 0948. Water was clear. Left site at 0950.
Signature of Field Technician
--~< //: ./ -.___) ,: ., ~l.f'__,.,.._ -,_ ,,/,, -,:,...~. ~'~-) <
Groundwater Discharge Permit ~E!-~L/ ,..-.· i'" .. __::. /' ---. .-~
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Groundwater Monitoring Quality Assurance Plan
White Mesa Mill
Field Data Worksheet For Groundwater
Location ID TW4-12 Sampling Program Chloroform Monitoring
Field Sample ID TW4-12 06152023 Sampling Event 2023 Q2 Chloroform
Purge Date & Time 6/14/2023 8:30
Sample Date & Time 6/15/2023 6:46 [sampler TH/DL
Purging Equipment Pump Weather Conditions Sunny
Pump Type Grundfos External Ambient Temperature (C) 14
Purging Method 2 Casings Previous Well Sampled TW4-42
Casing Volume (gal) 30.35
Calculated Casing Volumes Purge Duration (min) 5.51
pH Buffer 7.0 7.0 Well Depth (ft) 103.20
pH Buffer 4.0 4.0 Well Casing Diameter (in) 4
Specific Conductance (micromhos) 1000 Depth to Water Before Purging (ft) 56.71
Conductivity Dissolved
Date/Time Gallons Purged (gal) (um hos/cm) pH (pH Units) Temp (deg C) Redox (mV) Turbidity (NTU) Oxygen(%) Before/After
6/14/2023 8:33 36.66 1304 7.18 15.05 399 2.1 47.2
6/15/2023 6:46 1542 7.11 14.36 Before
6/15/2023 6:47 1545 7.13 14.40 After
Pumping Rate Calculations
[Volume of _y.,at~r eurged (gals) 36.66 Flow Rate (Q = S/60) (gal/min) 11.00
Time to evacuate 2 Casing Volumes (min) 3.33 I Final Depth to Water (foot) 100.88 Number of casing Volumes 1.20
Volume, if well evacuated to dryness ()
Name of Certified Analytical Laboratory
AWSL
Analytical Sam_eles Information
Sample Container Preservative
Type of Sample/ Analysis Collected? Matrix Number Type Sample Filtered? Type Added?
VOCs-Chloroform y WATER 3 40ml VOA u HCI (pH<2), 4 Deg C y
Chloride y WATER 1 500-ml Poly u None N
Nitrate/nitrite as N y WATER 1 250-ml HOPE u H2SO4 (pH<2), 4 Deg C y
Comments:
Arrived on site at 0826. Purge began at 0830. Purged well for a total of 3 minutes and 20 seconds. Purged well dry. Purge ended at 0833. Water was clear. Left site at 0836. Arrived on site at 0642.
Depth to water was 56.70. Samples bailed and collected at 0646. Left site at 0648.
Signature of Field Technician
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Groundwater Discharge Permit
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Groundwater Monitoring Quality Assurance Plan
White Mesa Mill
Field Data Worksheet For Groundwater
Location ID TW4-13 Sampling Program Chloroform Monitoring
Field Sample ID TW4-13 06152023 Sampling Event 2023 Q2 Chloroform
Purge Date & Time 6/14/2023 10:24
Sample Date & Time 6/15/2023 7:08 !sampler TH/DL
Purging Equipment Pump Weather Conditions Sunny
Pump Type Grundfos External Ambient Temperature (C) 20
Purging Method 2 Casings Previous Well Sampled TW4-32
Casing Volume (gal) 31.34
Calculated Casing Volumes Purge Duration (min) 5.69
pH Buffer 7.0 7.0 Well Depth (ft) 105.70
pH Buffer 4.0 4.0 Well Casing Diameter (in) 4
Specific Conductance (micromhos) 1000 Depth to Water Before Purging (ft) 57.70
Conductivity Dissolved
Date/Time Gallons Purged (gal) (um hos/cm) pH (pH Units) Temp (deg C) Redox (mV) Turbidity (NTU) Oxygen(%) Before/After
6/14/2023 10:27 40.33 2063 6.92 15.33 369 4.0 89.0
6/15/2023 7:08 2053 7.11 14.10 Before
6/15/2023 7:09 2059 7.13 14.14 After
Pumping Rate Calculations
!Volume of water purged (gals) 40.33 Flow Rate (Q = S/60) (gal/min) 11.00
Time to evacuate 2 Casing Volumes (min) 3.66
[Final Depth to Water (feet) 102.78 Number of casing Volumes 1.28
Volume, if well evacuated to dryness (gals) 40.33
Name of Certified Analytical Laboratory
AWSL
Analytical Sameles Information
Sample Container Preservative
Type of Sample/Analysis Collected? Matrix Number Type Sample Filtered? Type Added?
voes-Chloroform y WATER 3 40ml VOA u HCI (pH<2), 4 Deg C y
Chloride y WATER 1 500-ml Poly u None N
Nitrate/nitrite as N y WATER 1 250-ml HDPE u H2SO4 (pH<2), 4 Deg C y
Comments:
Arrived on site at 1019. Purge began at 1024. Purged well for a total 3 minutes and 40 seconds. Purged well dry. Purge ended at 1027. Water was clear. Left site at 1030. Arrived on site at 0704.
Depth to water was 57.82. Samples bailed and collected at 0708. Left site at 0710.
Signature of Field Technician
---... , ·• __✓,;.,; / -._____),,,-,_,-.~-_.c;c__-r;/.: ,__,Zd<)
Groundwater Discharge Permit ge~. ""'. E·I' ·· /' I , , , .' • ~y ~ '.
Groundwater Monitoring Quality Assurance Plan
White Mesa Mill
Field Data Worksheet For Groundwater
Location ID TW4-14 Sampling Program Chloroform Monitoring
Field Sample ID TW4-14 06152023 Sampling Event 2023 Q2 Chloroform
Purge Date & Time 6/14/2023 10:57
Sample Date & Time 6/15/2023 7:15 [sampler TH/DL
Purging Equipment Pump Weather Conditions Sunny
Pump Type Grundfos External Ambient Temperature (C) 20
Purging Method 2 Casings Previous Well Sampled TW4-13
Casing Volume (gal) 11.61
Calculated Casing Volumes Purge Duration (min) 2.11
pH Buffer 7.0 7.0 Well Depth (ft) 95.10
pH Buffer 4.0 4.0 Well Casing Diameter (in) 4
Specific Conductance (micromhos) 1000 Depth to Water Before Purging (ft) 77.32
Conductivity Dissolved
Date/Time Gallons Purged (gal) (um hos/cm) pH (pH Units) Temp (deg C) Redox (mV) Turbidity (NTU) Oxygen(%) Before/After
6/14/2023 10:58 14.66 5234 6.10 16.27 432 49.0 91.7
6/15/2023 7:15 5189 6.30 14.30 Before
6/15/2023 7:16 5190 6.29 14.35 After
Pumping Rate Calculations
[volume of water purged (gals) 14.66 Flow Rate (Q = S/60) (gal/min) 11.00
Time to evacuate 2 Casing Volumes (min) 1.33
[Final Depth to Water (feet) 92.77 Number of casing Volumes 1.26
Volume, if well evacuated to dryness (gals) 14.66
Name of Certified Analytical Laboratory
AWSL
Analytical Samples Information
Sample Container Preservative
Type of Sample/Analysis Collected? Matrix Number Type Sample Filtered? Type Added?
VOCs-Chloroform V WATER 3 40ml VOA u HCI (pH<2), 4 Deg C V
Chloride V WATER 1 500-ml Poly u None N
Nitrate/nitrite as N V WATER 1 250-ml HOPE u H2SO4 (pH<2), 4 Deg C V
Comments:
Arrived on site at 1053. Purge began at 1057. Purged well for a total of 1 minute and 20 seconds. Purged well dry. Purge ended at 1058. Water was murky. Left site at 1101. Arrived on site at 0711 .
Depth to water was 77.35. Samples bailed and collected at 0715. Left site at 0717.
Signature of Field Technician
~ 1, CN".-<C--J/c -a~)
Groundwater Discharge Permit
~~~ -=:-~~YF,IJEZ.S Groundwater Monitoring Quality Assurance Plan
White Mesa Mill
Field Data Worksheet For Groundwater
Location ID MW-26 Sampli_11_g Program Chloroform Monitorin_g_
Field Sample ID MW-26 06132023 Sampling Event 2023 Q2 Chloroform
Purge Date & Time 6/13/2023 9:39
Sample Date & Time 6/13/2023 9:40 [s ampler TH/DL
Purging Equipment Pump Weather Conditions Partly cloudy
Pump Type Grundfos External Ambient Temperature (C) 17
Purging Method 2 Casings Previous Well Sampled TW4-39
Casing Volume (gal) 25.61
Calculated Casing Volumes Purge Duration ()
pH Buffer 7.0 7.0 Well Depth (ft) 121.33
pH Buffer 4.0 4.0 Well Casing Diameter (in) 4
Specific Conductance (micromhos) 1000 Depth to Water Before Purging (ft) 82.11
Conductivity Dissolved
Date/Time Gallons Purged (um hos/cm) pH (pH Units) Temp (deg C) Redox (mV) Turbidity (NTU) Oxygen(%) Before/After
6/13/2023 9:40 3495 7.04 15.97 228 1.9 36.2
Pumping Rate Calculations
[volume of water purged () Flow Rate (Q = S/60) (gal/min) 16.00
Time to evacuate 2 Casing Volumes ()
[ Final Depth to Water (feet) 113.66 Number of casing Volumes
Volume, if well evacuated to dryness () 0
Name of Certified Analytical Laboratory
AWSL
Analyti<:~I Sa"!_ples Information
Sample Container Preservative
Type of Sample/Analysis Collected? Matrix Number Type Sample Filtered? Type Added?
voes-Chloroform y WATER 3 40ml VOA u HCI (pH<2), 4 Deg C y
Chloride y WATER 1 500-ml Poly u None N
Nitrate/nitrite as N y WATER 1 250-ml HDPE u H2SO4 (pH<2), 4 Deg C y
Comments: L Arrived on site at 0936. Samples collected at 0940. Water was clear. Left site at 0942.
Signature of Field Technician
---,_ .J-.;. ,,,,;..'" / ._____Ju,,.,.,.,_"----, ·-;,-_, -✓✓-d~)
Groundwater Discharge Permit ,~~-~--,. r==~~ -. -,.-~--, .,-~Y~f£51':S
Groundwater Monitoring Quality Assurance Plan
White Mesa Mill
Field Data Worksheet For Groundwater
Location ID TW4-16 Sampling Program Chloroform Monitoring
Field Sample ID TW4-16 06212023 Sampling Event 2023 Q2 Chloroform
Purge Date & Time 6/20/2023 11:57
Sample Date & Time 6/21/2023 8:24 [sampler TH/DL
Purging Equipment Pump Weather Conditions Sunny and Windy
Pump Type Grundfos External Ambient Temperature (C) 24
Purging Method 2 Casings Previous Well Sampled TW4-18
Casing Volume (gal) 47.48
Calculated Casing Volumes Purge Duration (min) 8.63
pH Buffer 7.0 7.0 Well Depth (ft) 147.60
pH Buffer 4.0 4.0 Well Casing Diameter (in) 4
Specific Conductance (micromhos) 1000 Depth to Water Before Purging (ft) 74.88
Conductivity Dissolved
Date/Time Gallons Purged (gal) (umhos/cm) pH (pH Units) Temp (deg C) Redox (mV) Turbidity (NTU) Oxygen(%) Before/After
6/20/2023 12:04 77.00 3586 6.52 14.92 294 10.1 10.0
6/20/2023 12:05 88.00 3597 6.53 14.94 286 10.3 11.0
6/20/2023 12:06 99.00 3523 6.54 14.96 282 11.0 12.0
6/20/2023 12:07 110.00 3631 6.56 14.94 275 11.1 12.1
Pumping Rate Calculations
[volume of water purged (gals) 110.00 Flow Rate (Q = S/60) (gal/min) 11.00
Time to evacuate 2 Casing Volumes (min) 10.00
[~inc1I Depth to Water (feet) 97.21 Number of casing Volumes 2.00
Volume, if well evacuated to dryness () 0
Name of Certified Analytical Laboratory
AWSL
Analytical Samples Information
Sample Container Preservative
Type of Sample/Analysis Collected? Matrix Number Type Sample Filtered? Type Added?
voes-Chloroform y WATER 3 40ml VOA u HCI (pH<2), 4 Deg C y
Chloride y WATER 1 500-ml Poly u None N
Nitrate/nitrite as N y WATER 1 250-ml HOPE u H2SO4 (pH<2), 4 Deg C y
Comments:
Arrived on site at 1153. Purge began at 1157. Purged well for a total of 10 minutes. Purge ended at 1207. Water was a little murky. Left site at 1210. Arrived on site at 0820. Depth to water was
75.03. Samples bailed and collected at 0824. Left site at 0825.
Signature of Field Technician
~ j ,~JV.A __ +,/:-£/~J
Groundwater Discharge Permit
-,:,,~y~ Groundwater Monitoring Quality Assurance Plan
White Mesa Mill
Field Data Worksheet For Groundwater
Location ID MW-32 Sampling Program Chloroform Monitoring
Field Sample ID MW-32 06142023 Sampling_ Event 2023 Q2 Chloroform
Purge Date & Time 6/14/2023 6:10
Sample Date & Time 6/14/2023 11:10 [sampler TH/DL
Purging Equipment Pump Weather Conditions Partly cloudy
Pump Type QED External Ambient Temperature (C) 10
Purging Method 2 Casings Previous Well Sampled TW4-19
Casing Volume (gal) 31.05
Calculated Casing Volumes Purge Duration (min) 286.17
pH Buffer 7.0 7.0 Well Depth (ft) 130.60
pH Buffer 4.0 4.0 Well Casing Diameter (in) 4
Specific Conductance (micromhos) 1000 Depth to Water Before Purging (ft) 83.05
Conductivity DISSOived
Date/Time Gallons Purged (gal) (umhos/cm) pH (pH Units) Temp (deg C) Redox (mV) Turbidity (NTU) Oxygen(%) Before/After
6/14/2023 11:07 64.44 3562 6.51 16.10 301 6.2 32.9
6/14/2023 11:08 64.66 3570 6.53 16.08 300 5.0 33.0
6/14/2023 11:09 64.88 3575 6.54 16.05 300 4.9 33.4
6/14/2023 11:10 65.10 3580 6.53 16.04 299 5.0 34.0
Pum ping Rate Calculations
[volume of water purged (gals) 65.10 Flow Rate (Q = S/60) (gal/min) .217
[!:"inal Depth to Water (feet) 87.85
Time to evacuate 2 Casing Volumes (min) 300.00
Number of casing Volumes 2.00
Volume, if well evacuated to dryness () 0
Name of Certified Analytical Laboratory
AWSL
Analytical Samples Information
Sample Container Preservative
Type of Sample/Analysis Collected? Matrix Number lype Sample Filtered? lype Addedf
VOCs-Chloroform y WATER 3 40ml VOA u HCI (pH<2), 4 Deg C y
Chloride y WATER 1 500-mL Poly u None N
Nitrate/nitrite as N y WATER 1 250-mL HDPE u 12504 (pH<2), 4 Deg y
Comments: I Arrived on site at 0605. Purge began at 0610. Purged well for a total of 300 minutes. Purge ended and samples collected at 1_110. ~ater was a little murky. Left site at 1115.
Signature of Field Technician
~ ,,,.,,,._, __ -!-/'.-~~~)
Groundwater Discharge Permit
~
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Groundwater Monitoring Quality Assurance Plan
White Mesa Mill
Field Data Worksheet For Groundwater
Location ID TW4-18 Sampling Program Chloroform Monitoring
Field Sample ID TW4-18 06212023 Sampling Event 2023 Q2 Chloroform
Purge Date & Time 6/20/2023 11:27
Sample Date & Time 6/21/2023 8:04 I sampler ! TH/DL
Purging Equipment Pump Weather Conditions Sunny and windy
Pump Type Grundfos External Ambient Temperature (C) 24
Purging Method 2 Casings Previous Well Sampled TW4-33
Casing Volume (gal) 40.74
Calculated Casing Volumes Purge Duration (min) 7.40
pH Buffer 7.0 7.0 Well Depth (ft) 136.90
pH Buffer 4.0 4.0 Well Casing Diameter (in) 4
Specific Conductance (micromhos) 1000 Depth to Water Before Purging (ft) 74.50
Conductivity Dissolved
Date/Time Gallons Purged (gal) (um hos/cm) pH (pH Units) Temp (deg C) Redox (mV) Turbidity (NTU) Oxygen(%) Before/After
6/20/2023 11:32 55.00 2105 6.42 15.56 262 20.0 9.8
6/20/2023 11:33 66.00 2090 6.42 15.56 271 21.0 9.6
6/20/2023 11:34 77.00 2071 6.42 15.55 273 22.0 9.7
6/20/2023 11:35 88 .00 2050 6.42 15.55 276 22.3 9.8
Pumping Rate Calculations
!volume of water p1Jrged (gals) 88.00 Flow Rate (Q = S/60) (gal/min) 11.00
Time to evacuate 2 Casing Volumes (min) 8.00
[ Final Depth to Water (feet) 75.88 Number of casing Volumes 2.00
Volume, if well evacuated to dryness () 0
Name of Certified Analytical Laborato~
AWSL
Analytical Samples Information
Sample Container Preservative
Type of Sample/Analysis Collected? Matrix Number Type Sample Filtered? Type Added?
VOCs-Chloroform y WATER 3 40mlVOA u HCI (pH<2), 4 Deg C y
Chloride y WATER 1 500-ml Poly u None N
Nitrate/nitrite as N y WATER 1 250-ml HOPE u H25O4 (pH<2), 4 Deg C y
Comments:
Arrived on site at 1123. Purge began at 1127. Purged well for a total 8 minutes. Purge ended at 1135. Water was clear. Left site at 1138. Arrived on site at 0800. Depth to water was 7 4.55. Samples
bailed and collected at 0804. Left site at 0805
Signature of Field Technician
---,._ , _,,_ /;,--: _/ -----> I_. ~ ... r ... •-----L--,--;, ~ _..._,,J •~<)
I
Groundwater Discharge Permit
<g<eF-CWFLELS Groundwater Monitoring Quality Assurance Plan
White Mesa Mill
Field Data Worksheet For Groundwater
Location ID TW4-19 Sampling Program Chloroform Monitoring
Field Sample ID TW4-19 06132023 Sampling Event 2023 Q2 Chloroform
Purge Date & Time 6/13/2023 12:34
Sample Date & Time 6/13/2023 12:35 [sampler TH/DL
Purging Equipment Pump Weather Conditions Partly cloudy
Pump Type Grundfos External Ambient Temperature (C) 20
Purging Method 2 Casings Previous Well Sampled TW4-40
Casing Volume (gal) 33.85
Calculated Casing Volumes Purge Duration ()
pH Buffer 7.0 7.0 Well Depth (ft) 126.86
pH Buffer 4.0 4.0 Well Casing Diameter (in) 4
Specific Conductance (micromhos) 1000 Depth to Water Before Purging (ft) 75.01
Conductivity Dissolved
Date/Time Gallons Purged (umhos/cm) pH (pH Units) Temp (deg C) Redox (mV) Turbidity (NTU) Oxygen(%) Before/After
6/13/2023 12:35 2670 6.74 17.01 369 4.0 24.0
Pumping Rate Calculations I Volume of water purged () Flow Rate (Q = S/60) (gal/min) 16.00
Time to evacuate 2 Casing Volumes ()
[Final Depth to Water (feet) 80.21 Number of casing Volumes
Volume, if well evacuated to dryness () 0
Name of Certified Analytical Laboratory
AWSL
Analytical Samples Information
Sample Container Preservative
Type of Sample/Analysis Collected? Matrix Number Type Sample Filtered? Type Added?
VOCs-Chloroform V WATER 3 40mlVOA u HCI (pH<2), 4 Deg C V
Chloride V WATER 1 500-ml Poly u None N
Nitrate/nitrite as N V WATER 1 250-ml HDPE u H2SO4 (pH<2), 4 Deg C V
Comments:
[ Arrived on site at 1231. Samples collected at 1235. Water was clear. Left site at 1237.
Signature of Field Technician
--=:') ,, , en.•_.,:__ ~)-;,-'-
Groundwater Discharge Permit (_ --~s--c ~-"-E-,_ .--,' .._____,r . i -r .-. l ~Y~ • , ~ J ,(
Groundwater Monitoring Quality Assurance Plan
White Mesa Mill
Field Data Worksheet For Groundwater
Location ID TW4-21 Sampling Program Chloroform Monitoring
Field Sample ID TW4-21 06132023 Sampling Event 2023 Q2 Chloroform
Purge Date & Time 6/13/2023 7:34
Sample Date & Time 6/13/2023 7:35 [sampler TH/DL
Purging Equipment Pump Weather Conditions Partly cloudy
Pump Type Grundfos External Ambient Temperature (C) 13
Purging Method 2 Casings Previous Well Sampled N/A
Casing Volume (gal) 28.61
Calculated Casing Volumes Purge Duration ()
pH Buffer 7.0 7.0 Well Depth (ft) 118.80
pH Buffer 4.0 4.0 Well Casing Diameter (in) 4
Specific Conductance (micromhos) 1000 Depth to Water Before Purging (ft) 74.98
Conductivity Dissolved
Date/Time Gallons Purged (um hos/cm) pH (pH Units) Temp (deg C) Redox (mV) Turbidity (NTU) Oxygen(%) Before/After
6/13/2023 7:34 2985 7.04 16.10 372 3.0 100.0
Pumping Rate Calculations
[volume of water purged () Flow Rate (Q = S/60) (gal/min) 16.00
I Final Depth to Water (feet) 79.23
Time to evacuate 2 Casing Volumes ()
Number of casing Volumes
Volume, if well evacuated to dryness () 0
Name of Certified Analytical Laboratory
AWSL
Analytical Samples Information
Sample Container Preservative
Type of Sample/ Analysis Collected? Matrix Number Type Sample Filtered? Type Added?
voes-Chloroform y WATER 3 40ml VOA u HCI (pH<2), 4 Deg C y
Chloride y WATER 1 500-ml Poly u None N
Nitrate/nitrite as N y WATER 1 250-ml HOPE u H2S04 (pH<2), 4 Deg C y
Comments: I Arrived on site at 0731 . Samples collected at 0735. Water was clear. Left site at 0737,
Signature of Field Technician
~.,, '''-"-"'----1-/, -«~)
Groundwater Discharge Permit
t~
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Groundwater Monitoring Quality Assurance Plan
White Mesa Mill
Field Data Worksheet For Groundwater
Location ID TW4-22 Sampling Program Chloroform Monitoring
Field Sample ID TW4-22 06132023 Sampling Event 2023 Q2 Chloroform
Purge Date & Time 6/13/2023 7:58
Sample Date & Time 6/13/2023 8:03 [sampler TH/DL
Purging Equipment Pump Weather Conditions Partly cloudy
Pump Type Grundfos External Ambient Temperature (C) 14
Purging Method 2 Casings Previous Well Sampled TW4-24
Casing Volume (gal) 29.87
Calculated Casing Volumes Purge Duration ()
pH Buffer 7.0 7.0 Well Depth (ft) 114.70
pH Buffer 4.0 4.0 Well Casing Diameter (in) 4
Specific Conductance (micromhos) 1000 Depth to Water Before Purging (ft) 68.95
Conductivity Dissolved
Date/Time Gallons Purged (umhos/cm) pH (pH Units) Temp (deg C) Redox (mV) Turbidity (NTU) Oxygen(%) Before/After
6/13/2023 8:02 5970 6.71 15.10 363 0 92.0
I Volume of water pmged O
Pumping_ Rate Calculations
Flow Rate (Q = S/60) (gal/min) 16.00
Time to evacuate 2 Casing Volumes ()
[Final Depth to Water (feet) 102.67 Number of casing Volumes
Volume, if well evacuated to dryness O 0
Name of Certified Analytical Laboratory
AWSL
Analytical Samples Information
Sample Container Preservative
Type of Sample/Analysis Collected? Matrix Number Type Sample Filtered? Type Added?
voes-Chloroform y WATER 3 40ml VOA u HCI (pH<2), 4 Deg C y
Chloride y WATER 1 500-ml Poly u None N
Nitrate/nitrite as N y WATER 1 250-ml HDPE u H2SO4 (pH<2), 4 Deg C y
Comments:
[ Arrived on site at 0759. Samples collected at 0803. Water was clear. Left site at 0805.
Signature of Field Technician
~ ,,,.,,,._,,_ -,1:;-,.,,~;,--:~J
Groundwater Discharge Permit
~ . . I . , e~ .. ·
-~
' .· ~y~
Groundwater Monitoring Quality Assurance Plan
White Mesa Mill
Field Data Worksheet For Groundwater
Location ID TW4-23 Sampling Program Chloroform Monitoring
Field Sample ID TW4-23 06202023 Sampling Event 2023 Q2 Chloroform
Purge Date & Time 6/19/2023 12:43
Sample Date & Time 6/20/2023 7:11 [sampler TH/DL
Purging Equipment Pump Weather Conditions Sunny
Pump Type Grundfos External Ambient Temperature (C) 26
Purging Method 2 Casings Previous Well Sampled TW4-35
Casing Volume (gal) 25.81
Calculated Casing Volumes Purge Duration (min) 4.69
pH Buffer 7 .0 7.0 Well Depth (ft) 116.40
pH Buffer 4.0 4.0 Well Casing Diameter (in) 4
Specific Conductance (micromhos) 1000 Depth to Water Before Purging (ft) 76.87
Conductivity Dissolved
Date/Time Gallons Purged (gal) (um hos/cm) pH (pH Units) Temp (deg C) Redox (mV) Turbidity (NTU) Oxygen(%) Before/After
6/19/2023 12:47 44.00 3406 6.87 14.59 148 10.0 54.0
6/19/2023 12:48 55.00 3403 6.83 14.68 151 9.0 57.0
6/19/2023 12:49 66.00 3421 6.81 14.82 160 9.0 58.0
6/19/2023 12:50 77.00 3400 6.80 14.69 163 9.0 59.0
Pumping Rate Calculations
[volume of water purged (gals) 77.00 Flow Rate (Q = S/60) (gal/min) 11.00
Time to evacuate 2 Casing Volumes (min) 7.00
[ Final Depth to Water (feet) 102.45 Number of casing Volumes 2.00
Volume, if well evacuated to dryness () 0
Name of Certified Analytical Laboratory
AWSL
Analytical Samples Information
Sample Container Preservative
Type of Sample/Analysis Collected? Matrix Number Type Sample Filtered? Type Added?
voes-Chloroform y WATER 3 40ml VOA u HCI (pH<2), 4 Deg C y
Chloride y WATER 1 500-mL Poly u None N
Nitrate/nitrite as N y WATER 1 250-mL HOPE u H2SO4 (pH<2), 4 Deg C y
Comments:
Arrived on site at 1239. Purge began at 1243. Purged well for a total of 7 minutes. Water had a orange coloration but was clearing as purge went on . Purge ended at 1250. Left site at 1252. Arrived on
site at 0707. Depth to water was 77.00. Samples bailed and collected at 0711 . Left site at 0712.
Signature of Field Technician
~ ••, ·.n.c-~ -J-/ 4~~)
Groundwater Discharge Permit =-~1-, ·' ,·4 .-I
.• -~y~
Groundwater Monitoring Quality Assurance Plan
White Mesa Mill
Field Data Worksheet For Groundwater
Location ID TW4-24 Sampling Program Chloroform Monitoring_
Field Sample ID TW4-24 06132023 Sampling_ Event 2023 Q2 Chloroform
Purge Date & Time 6/13/2023 7:54
Sample Date & Time 6/13/2023 7:55 jsampler TH/DL
Purging Equipment Pump Weather Conditions Partly cloudy
Pump Type Grundfos External Ambient Temperature (C) 13
Purging Method 2 Casings Previous Well Sampled TW4-25
Casing Volume (gal) 29.75
Calculated Casing Volumes Purge Duration ()
pH Buffer 7.0 7.0 Well Depth (ft) 114.80
pH Buffer 4.0 4.0 Well Casing Diameter (in) 4
Specific Conductance (micromhos) 1000 Depth to Water Before Purging (ft) 69.23
Conductivity Dissolved
Date/Time Gallons Purged (um hos/cm) pH (pH Units) Temp (deg C) Redox (mV) Turbidity (NTU) Oxygen(%) Before/After
6/13/2023 7:54 8444 6.96 14.90 330 2.0 32.3
Pumping Rate Calculations
[volume of water purged () Flow Rate (Q = S/60) (gal/min) 16.00
Time to evacuate 2 Casing Volumes ()
[Final Depth to Water (feet) 80.38 Number of casing Volumes
Volume, if well evacuated to dryness () 0
Name of Certified Analytical Laboratory
AWSL
Analytical Samples Information
Sample Container Preservative
Type of Sample/Analysis Collected? Matrix Number Type Sample Filtered? Type Added?
voes-Chloroform y WATER 3 40ml VOA u HCI (pH<2), 4 Deg C y
Chloride y WATER 1 500-ml Poly u None N
Nitrate/nitrite as N y WATER 1 250-ml HOPE u H2SO4 (pH<2), 4 Deg C y
Comments:
[ Arrived on site at 0750. Samples collected at 0755. Water was clear. Left site at 0757.
Signature of Field Technician
---.. ' . //~ ------->u .. "..fl,p_..~-r;I;. -(..£_.,. ""<"-')
Groundwater Discharge Permit v -e,;:::.,,YFUE7-S Groundwater Monitoring Quality Assurance Plan
White Mesa Mill
Field Data Worksheet For Groundwater
Location ID TW4-25 Sampling Program Chloroform Monitoring
Field Sample ID TW4-25 06132023 Sampling Event 2023 Q2 Chloroform
Purge Date & Time 6/13/2023 7:44
Sample Date & Time 6/13/2023 7:45 !sampler TH/DL
Purging Equipment Pump Weather Conditions Partly cloudy
Pump Type Grundfos External Ambient Temperature (C) 13
Purging Method 2 Casings Previous Well Sampled TW4-21
Casing Volume (gal) 43.48
Calculated Casing Volumes Purge Duration ()
pH Buffer 7.0 7.0 Well Depth (ft) 136.70
pH Buffer 4.0 4.0 Well Casing Diameter (in) 4
Specific Conductance (micromhos) 1000 Depth to Water Before Purging (ft) 70.10
Conductivity Dissolved
Date/Time Gallons Purged (umhos/cm) pH (pH Units) Temp (deg C) Redox (mV) Turbidity (NTU) Oxygen(%) Before/After
6/13/2023 7:44 2426 7.29 14.82 326 0 29.0
Pumping Rate Calculations
~lu'!le_ of water purged O Flow Rate (Q = S/60) (gal/min) 15.00
Time to evacuate 2 Casing Volumes () I Final Depth to Wate~(~e!} 102.46 Number of casing Volumes
Volume, if well evacuated to dryness () 0
Name of Certified Analytical Laboratory
AWSL
Analytical Samples Information
Sample Container Preservative
Type of Sample/Analysis Collected? Matrix Number Type Sample Filtered? Type Added?
VOCs-Chloroform V WATER 3 40mlVOA u HCI (pH<2), 4 Deg C V
Chloride V WATER 1 500-ml Poly u None N
Nitrate/nitrite as N V WATER 1 250-ml HDPE u H2SO4 (pH<2), 4 Deg C V
Comments: I Arrived on site at 0740. Samples collected at 0745. Water was clear. Left site at 0747.
Signature of Field Technician
-.-=),,,,,,,>a--1-;/' ~~)
Groundwater Discharge Permit ~--e--~\-.' -:,,,.;:-_ --.. -, ,·
£ _ --~ .{• ~ ' .-~Y~-:::Z: S
-~· .:J.. ·'
Groundwater Monitoring Quality Assurance Plan
White Mesa Mill
Field Data Worksheet For Groundwater
Location ID TW4-26 Sampling Program Chloroform Monitoring
Field Sample ID TW4-26 06212023 Sampli11_g Event 2023 Q2 Chloroform
Purge Date & Time 6/20/2023 14:06
Sample Date & Time 6/21/2023 9:01 [sampler TH/DL
Purging Equipment Pump Weather Conditions Sunny and windy
Pump Type Grundfos External Ambient Temperature (C) 27
Purging Method 2 Casings Previous Well Sampled TW4-07
Casing Volume (gal) 8.09
Calculated Casing Volumes Purge Duration (min) 1.47
pH Buffer 7.0 7.0 Well Depth (ft) 87.70
pH Buffer 4.0 4.0 Well Casing Diameter (in) 4
Specific Conductance (micromhos) 1000 Depth to Water Before Purging (ft) 75.31
Conductivity Dissolved
Date/Time Gallons Purged (gal) (umhos/cm) pH (pH Units) Temp (deg C) Redox (mV) Turbidity (NTU) Oxygen(%) Before/After
6/20/2023 14:06 8.25 4506 6.86 16.80 284 3.3 85.0
6/21/2023 9:01 4736 6.81 14.94 Before
6/21/2023 9:02 4740 6.80 14.90 After
[volume of water purged (gals)
Pumping_ Rate Calculations
8.25 Flow Rate (Q = S/60) (gal/min) 11.00
Time to evacuate 2 Casing Volumes (min) 0.75
[Final Depth to Water (feet) 84.67 Number of casing Volumes 1.01
Volume, if well evacuated to dryness (gals) 8.25
Name of Certified Analytical Laboratory
AWSL
Anal)"tica~ Sameles Information
Sample Container Preservative
Type of Sample/Analysis Collected? Matrix Number Type Sample Filtered? Type Added?
VO Cs-Chloroform y WATER 3 40ml VOA u HCI (pH<2), 4 Deg C y
Chloride y WATER 1 500-mL Poly u None N
Nitrate/nitrite as N y WATER 1 250-mL HDPE u H2SO4 (pH<2), 4 Deg C y
Comments:
Arrived on site at 1402. Purge began at 1406. Purged well for a total of 45 seconds. Purged well dry. Water was clear. Purge ended at 1407. Left site at 1410. Arrived on site at 0857. Depth to water
was 75.64. Samples bailed and collected at 0901. Left site at 0903.
Signature of Field Technician
~~, cnr--c--f--/_-£Z~
~
' ·~---
c:;;. __;-~ ~.-........---c r__::.~ 1/
Location ID
Field Sample ID
Purge Date & Time
Sample Date & Time
Purging Equipment
Pump Type
Purging Method
Casing Volume (gal)
Calculated Casing Volumes Purge Duration (min)
pH Buffer 7.0
pH Buffer 4.0
Specific Conductance (micromhos)
Date/Time Gallons Purged (gal)
6/20/2023 8:16 11.00
6/21/2023 7:04
6/21/2023 7:05
lvolu1t1e of_water purged (gals)
[ Final Depth to Water (feet)
Name of Certified Analytical Laboratory
AWSL
Analytical Samples Information
Type of Sample/Analysis
VOCs-Chloroform
Chloride
Nitrate/nitrite as N
Comments:
Groundwater Discharge Permit
Groundwater Monitoring Quality Assurance Plan
White Mesa Mill
Field Data Worksheet For Groundwater
TW4-27 Samp!i_11_g Program Chloroform Monitoring
TW4-27 06212023 Sampling Event 2023 Q2 Chloroform
6/20/2023 8:15
6/21/2023 7:04 [sampler TH/DL
Pump Weather Conditions Sunny and windy
Grundfos External Ambient Temperature (C) 18
2 Casings Previous Well Sampled TW4-06
10.74
1.95
7.0 Well Depth (ft) 95.75
4.0 Well Casing Diameter (in) 4
1000 Depth to Water Before Purging (ft) 79.30
Conductivity Dissolved
(um hos/cm) pH (pH Units) Temp (deg C) Redox (mV) Turbidity (NTU) Oxygen(%) Before/After
5117 6.70 15.64 281 3.5 72.0
4872 6.20 16.25 Before
4888 6.21 16.27 After
Pumping Rate Calculations
11.00 Flow Rate (Q = S/60) (gal/min) 11.00
Time to evacuate 2 Casing Volumes (min) 1.00
93.16 Number of casing Volumes 1.02
Volume, if well evacuated to dry_ness (gals) 11.00
Sample Container Preservative
Collected? Matrix Number Type Sample Filtered? Type Added?
y WATER 3 40ml VOA u HCI (pH<2), 4 Deg C y
y WATER 1 500-ml Poly u None N
y WATER 1 250-ml HDPE u H2SO4 (pH<2), 4 Deg C y
Arrived on site at 0811. Purge began at 0815. Purged well for a total of 1 minute. Purged welf dry. Purge ended at 0816. Water was mostly clear. Leff sfte at 0819. Arrived on site at 0700. Depth to
water was 79.65. Samples bailed and collected at 0704. Left site at 0706.
Signature of Field Technician
-----; • /2,;; / ----..J,.,v,.-.s--r:/, c,."£ d<)
Groundwater Discharge Permit
t~ ~~y~
Groundwater Monitoring Quality Assurance Plan
White Mesa Mill
Field Data Worksheet For Groundwater
Location ID TW4-28 Sampling Program Chloroform Monitoring
Field Sample ID TW4-28 06152023 Samplin_g Event 2023 Q2 Chloroform
Purge Date & Time 6/14/2023 9:04
Sample Date & Time 6/15/2023 6:54 [sampler TH/DL
Purging Equipment Pump Weather Conditions Sunny
Pump Type Grundfos External Ambient Temperature (C) 17
Purging Method 2 Casings Previous Well Sampled TW4-12
Casing Volume (gal) 38.02
Calculated Casing Volumes Purge Duration (min) 6.91
pH Buffer 7.0 7.0 Well Depth (ft) 108.48
pH Buffer 4.0 4.0 Well Casing Diameter (in) 4
Specific Conductance (micromhos) 1000 Depth to Water Before Purging (ft) 50.25
Conductivity Dissolved
Date/Time Gallons Purged (gal) (um hos/cm) pH (pH Units) Temp (deg C) Redox (mV) Turbidity (NTU) Oxygen(%) Before/After
6/14/2023 9:08 49.50 1542 7.20 15.12 300 3.9 94.0
6/15/2023 6:54 1538 7.10 14.20 Before
6/15/2023 6:55 1545 7.12 14.23 After
Pumping Rate Calculations
[volume of water purged (gals) 49.50 Flow Rate (Q = S/60) (gal/min) 11.00
Time to evacuate 2 Casing Volumes (min) 4.50
[Final Depth to Water (feet) 105.79 Number of casing Volumes 1.30
Volume, if well evacuated to dryness (gals) 49.50
Name of Certified Analytical Laboratory
AWSL
Anal~ical Samples Information
Sample Container Preservative
Type of Sample/Analysis Collected? Matrix Number Type Sample Filtered? Type Added?
voes-Chloroform y WATER 3 40mlVOA u HCI (pH<2), 4 Deg C y
Chloride y WATER 1 500-mL Poly u None N
Nitrate/nitrite as N y WATER 1 250-mL HOPE u H2SO4 (pH<2), 4 Deg C y
Comments:
Arrived on site at 0900. Purge began at 0904. Purged well for a total of 4 minutes and 30 seconds. Purged well dry. Purge ended at 0908. Water was clear. Left site at 0912. Arrived on site at 0650.
Depth to water was 50.24. Samples bailed and collected at 0654. Left site at 0656.
Signature of Field Technician
~,,CN.,<.--/_-/C-~~)
Groundwater Discharge Permit
,-~,c--·
Groundwater Monitoring Quality Assurance Plan
White Mesa Mill
Field Data Worksheet For Groundwater
Location ID TW4-29 Sampling Program Chloroform Monitoring
Field Sample ID TW4-29 06212023 Sampling Event 2023 Q2 Chloroform
Purge Date & Time 6/20/2023 13:02
Sample Date & Time 6/21/2023 8:40 [sampler TH/DL
Purging Equipment Pump Weather Conditions Sunny and windy
Pump Type Grundfos External Ambient Temperature (C) 26
Purging Method 2 Casings Previous Well Sampled TW4-10
Casing Volume (gal) 9.72
Calculated Casing Volumes Purge Duration (min) 1.76
pH Buffer 7.0 7.0 Well Depth (ft) 94.48
pH Buffer 4.0 4.0 Well Casing Diameter (in) 4
Specific Conductance (micromhos) 1000 Depth to Water Before Purging (ft) 79.58
Conductivity pH(pH Dissolved
Date/Time Gallons Purged (gal) (um hos/cm) Units) Temp (deg C) Redox (mV) Turbidity (NTU) Oxygen(%) Before/After
6/20/2023 13:03 8.25 3932 6.80 16.50 318 6.0 92.0
6/21/2023 8:40 3929 6.97 14.95 Before
6/21/2023 8:41 3940 6.98 14.98 After
Pumping Rate Calculations
[volume of water purged (gals) 8.25 Flow Rate (Q = S/60) (gal/min) 11.00
Time to evacuate 2 Casing Volumes (min) 0.75
[Final Depth to Water (feet) 92.11 Number of casing Volumes 0.84
Volume, if well evacuated to dryness (gals) 8.25
Name of Certified AnalX_tic~l~boratory
AWSL
Analytical Samples Information
Sample Container Preservative
Type of Sample/Analysis Collected? Matrix Number Type Sample Filtered? Type Added?
VOCs-Chloroform y WATER 3 40ml VOA u HCI (pH<2), 4 Deg C y
Chloride y WATER 1 500-mL Poly u None N
Nitrate/nitrite as N y WATER 1 250-mL HOPE u H2SO4 (pH<2), 4 Deg C y
Comments:
Arrived on site at 1258. Purge began at 1302. Purged well for a total of 45 seconds. Purged well dry. Purge ended at 1303. Water was clear. Left site at 1306. Arrived on site at 0835. Depth to water
was 79.64. Samples bailed and collected at 0840. Left site at 0843.
Signature of Field Technician
~.,, ,, ,,._ <-----c!-;/c_ -c;~~-)
Groundwater Discharge Permit
~~~ _:_:_;~..----~,.,.~
Groundwater Monitoring Quality Assurance Plan
White Mesa Mill
Field Data Worksheet For Groundwater
Location ID TW4-30 Sampling Program Chloroform Monitoring
Field Sample ID TW4-30 06212023 Sampling Event 2023 Q2 Chloroform
Purge Date & Time 6/20/2023 10:19
Sample Date & Time 6/21/2023 7:41 [sampler TH/DL
Purging Equipment Pump Weather Conditions Sunny and Windy
Pump Type Grundfos External Ambient Temperature (C) 23
Purging Method 2 Casings Previous Well Sampled TW4-08
Casing Volume (gal) 11.83
Calculated Casing Volumes Purge Duration (min) 2.15
pH Buffer 7.0 7.0 Well Depth (ft) 93.48
pH Buffer 4.0 4.0 Well Casing Diameter (in) 4
Specific Conductance (micromhos) 1000 Depth to Water Before Purging (ft) 75.35
Conductivity pH(pH Dissolved
Date/Time Gallons Purged (gal) (um hos/cm) Units) Temp (deg C) Redox (mV) Turbidity (NTU) Oxygen(%) Before/After
6/20/2023 10:20 14.66 4290 6.10 15.78 333 13.0 40.0
6/21/2023 7:41 4401 6.00 15.30 Before
6/21/2023 7:42 4400 6.03 15.26 After
Pumping Rate Calculations
[volume of water purged (gals) 14.66 Flow Rate (Q = S/60) (gal/min) 11.00
Time to evacuate 2 Casing Volumes (min) 1.33
[Final Depth to Water (feet) 90.98 Number of casing Volumes 1.23
Volume, if well evacuated to dryness (gals) 14.66
Name of Certified Analytical Laboratory
AWSL
Analytical Samples Information
Sample Container Preservative
Type of Sample/Analysis Collected? Matrix Number Type Sample Filtered? Type Added?
voes-Chloroform y WATER 3 40ml VOA u HCI (pH<2), 4 Deg C y
Chloride y WATER 1 500-ml Poly u None N
Nitrate/nitrite as N y WATER 1 250-ml HDPE u H2SO4 (pH<2}, 4 Deg C y
Comments:
Arrived on site at 1015. Purge began at 1019. Purged well for a total of 1 minute and 20 seconds. Purged well dry. Purge ended at 1020. Water was clear. Left site at 1023. Arrived on site at 0737.
Depth to water was 75.43. Samples bailed and collected at 07 41. Left site at 07 43.
Signature of Field Technician
~ ,,,,,.._~_-//.-/;-~)
Groundwater Discharge Permit
~
l-· .• -''
' r . . .' ~y~-------s
Groundwater Monitoring Quality Assurance Plan
White Mesa Mill
Field Data Worksheet For Groundwater
Location ID TW4-31 Sampling Program Chloroform Monitoring
Field Sample ID TW4-31 06152023 Sampling_ Event 2023 Q2 Chloroform
Purge Date & Time 6/14/2023 13:31
Sample Date & Time 6/15/2023 8:05 [sampler TH/DL
Purging Equipment Pump Weather Conditions Sunny
Pump Type Grundfos External Ambient Temperature (C) 24
Purging Method 2 Casings Previous Well Sampled TW4-36
Casing Volume (gal) 20.50
Calculated Casing Volumes Purge Duration (min) 3.72
pH Buffer 7.0 7.0 Well Depth (ft) 107.48
pH Buffer 4.0 4.0 Well Casing Diameter (in) 4
Specific Conductance (micromhos) 1000 Depth to Water Before Purging (ft) 76.08
Conductivity pH(pH Dissolved
Date/Time Gallons Purged (gal) (um hos/cm) Units) Temp (deg C) Redox (mV) Turbidity (NTU) Oxygen(%) Before/After
6/14/2023 13:33 22.00 3602 6.59 15.80 341 18.0 26.0
6/15/2023 8:05 3604 6.80 14.55 Before
6/15/2023 8:06 3610 6.79 14.58 After
Pumping Rate Calculations
[volume of water purged (gals) 22.0 Flow Rate (Q = S/60) (gal/min) 11.00
Time to evacuate 2 Casing Volumes (min) 2.00 I Final Depth to Water (feet) 105.46 Number of casing Volumes 1.07
Volume, if well evacuated to dryness (gals) 22.00
Name of Certified Analytical Laboratory
AWSL
Analytical Samples Information
Sample Container Preservative
Type of Sample/Analysis Collected? Matrix Number Type Sample Filtered? Type Added?
voes-Chloroform y WATER 3 40ml VOA u HCI (pH<2), 4 Deg C y
Chloride y WATER 1 500-ml Poly u None N
Nitrate/nitrite as N y WATER 1 250-ml HDPE u H2SO4 (pH<2), 4 Deg C y
Comments:
Arrived on site at 1327. Purge began at 1331. Purged well for a total of 2 minutes. Purged well dry. Purge ended at 1333. Water was a little murky. Left site at 1336. Arrived on site at 0800. Depth to
water was 76.11. Sam_eles bailed and collected at 0805. Left site at 0807.
Signature of Field Technician
~ u CN -'--/-/_ /)·::,-,;)
Groundwater Discharge Permit
~~ .. • -e··,-·. I ~.-~I" • ,-,· • .. ' . ~ '
f .' ~y ~ ·'.
Groundwater Monitoring Quality Assurance Plan
White Mesa Mill
Field Data Worksheet For Groundwater
Location ID TW4-32 Sampling Program Chloroform Monitoring
Field Sample ID TW4-32 06152023 Sampling Event 2023 Q2 Chloroform
Purge Date & Time 6/14/2023 9:44
Sample Date & Time 6/15/2023 7:00 [sampler TH/DL
Purging Equipment Pump Weather Conditions Sunny
Pump Type Grundfos External Ambient Temperature (C) 18
Purging Method 2 Casings Previous Well Sampled TW4-28
Casing Volume (gal) 37.42
Calculated Casing Volumes Purge Duration (min) 6.80
pH Buffer 7.0 7.0 Well Depth (ft) 114.64
pH Buffer 4.0 4.0 Well Casing Diameter (in) 4
Specific Conductance (micromhos) 1000 Depth to Water Before Purging (ft) 57.33
Conductivity pH(pH Dissolved
Date/Time Gallons Purged (gal) (um hos/cm) Units) Temp (deg C) Redox (mV) Turbidity (NTU) Oxygen(%) Before/After
6/14/2023 9:48 44.00 5871 4.32 15.06 390 19.0 0
6/14/2023 9:49 55.00 5884 4.29 15.10 402 17.1 0
6/14/2023 9:50 66.00 5945 4.28 15.08 418 16.0 0
6/14/2023 9:51 77.00 5870 4.27 15.05 430 15.0 0
Pumping Rate Calculations
[volume of_wat~ pul'_ge_!igiils) 77.00 Flow Rate (Q = S/60) (gal/min) 11.00
Time to evacuate 2 Casing Volumes (min) 7.00 I Final Depth to Water (feet) 98.99 Number of casing Volumes 2.00
Volume, if well evacuated to dryness () 0
Name of Certified Analytical Laboratory
AWSL
Analytical Samples Information
Sample Container Preservative
Type of Sample/Analysis Collected? Matrix Number Type Sample Filtered? Type Added?
VOCs-Chloroform y WATER 3 40ml VOA u HCI (pH<2), 4 Deg C y
Chloride y WATER 1 500-ml Poly u None N
Nitrate/nitrite as N y WATER 1 250-ml HDPE u H2SO4 (pH<2), 4 Deg C y
Comments:
Arrived on site at 0940. Purge began at 0944. Purged well for a total of 7 minutes. Purge ended at 0951. Water was clear. Pump had white salt like crystals on it when pulled. Left site at 0954. Arrived
on site at 0656. Depth to water was 57 .11. Samples bailed and collected at 0700. Left site at 0702.
Signature of Field Technician
~ ,,,,,,._,__-/-/-«i4j
Groundwater Discharge Permit
~
,. -e~ .. l· ' j
.
_, ,.~y~
Groundwater Monitoring Quality Assurance Plan
White Mesa Mill
Field Data Worksheet For Groundwater
Location ID TW4-33 Sampling Program Chloroform Monitoring_
Field Sample ID TW4-33 06212023 Sampling Event 2023 Q2 Chloroform
Purge Date & Time 6/20/2023 10:49
Sample Date & Time 6/21/2023 7:50 [sampler TH/DL
Purging Equipment Pump Weather Conditions Sunny and windy
Pump Type Grundfos External Ambient Temperature (C) 24
Purging Method 2 Casings Previous Well Sampled TW4-30
Casing Volume (gal) 4.44
Calculated Casing Volumes Purge Duration (min) 0.80
pH Buffer 7.0 7.0 Well Depth (ft) 86.23
pH Buffer 4.0 4.0 Well Casing Diameter (in) 4
Specific Conductance (micromhos) 1000 Depth to Water Before Purging (ft) 79.42
Conductivity pH(pH Dissolved
Date/Time Gallons Purged (gal) (um hos/cm) Units) Temp (deg C) Redox (mV) Turbidity (NTU) Oxygen(%) Before/After
6/20/2023 10:49 3.66 3.2 6.55 22.90 290 50.1 96.0
6/21/2023 7:50 4720 7.04 14.86 Before
6/21/2023 7:51 4722 7.05 14.85 After
Pumping Rate Calculations
~ume of water purged (gals) 3.66 Flow Rate (Q = S/60) (gal/min) 11.00
Time to evacuate 2 Casing Volumes (min) 0.33 I Final Depth ~to Wat~ (feet) 84.24 Number of casing Volumes 0.82
Volume, if well evacuated to dryness (gals) 3.66
Name of Certified Analytical Laboratory
AWSL
Analytical Samples Information
Sample Container Preservative
Type of Sample/Analysis Collected? Matrix Number Type Sample Filtered? Type Added?
voes-Chloroform y WATER 3 40ml VOA u HCI (pH<2), 4 Deg C y
Chloride y WATER 1 500-ml Poly u None N
Nitrate/nitrite as N y WATER 1 250-ml HDPE u H2SO4 (pH<2), 4 Deg C y
Comments:
Arrived on site at 1045. Purge began at 1049. Purged well for a total of 20 seconds. Purged well dry. Well didn't pump enough to clear the line of rinsate water. Purge ended at 1049. Left site at
1052. Arrived on site at 07 45. Depth to water was 80.30. Samples bailed and collected at 0750. Left site at 0752.
Signature of Field Technician
~ . _,,;.--:: ./ -----> ,, , ,.,.,_.__,~---f-;,':. :.,'£. d.,, <')
Groundwater Discharge Permit
~ ~s .-.-:a, . ~YFL
Groundwater Monitoring Quality Assurance Plan
White Mesa Mill
Field Data Worksheet For Groundwater
Location ID TW4-34 Sampling Program Chloroform Monitoring_
Field Sample ID TW4-34 06202023 Sampling Event 2023 Q2 Chloroform
Purge Date & Time 6/19/2023 13:54
Sample Date & Time 6/20/2023 7:35 [sampler TH/DL
Purging Equipment Pump Weather Conditions Sunny and windy
Pump Type Grundfos External Ambient Temperature (C) 27
Purging Method 2 Casings Previous Well Sampled TW4-38
Casing Volume (gal) 11.69
Calculated Casing Volumes Purge Duration (min) 2.12
pH Buffer 7.0 7.0 Well Depth (ft) 95.74
pH Buffer 4.0 4.0 Well Casing Diameter (in) 4
Specific Conductance (micromhos) 1000 Depth to Water Before Purging (ft) 77.83
Conductivity pH(pH Dissolved
Date/Time Gallons Purged (gal) (um hos/cm) Units) Temp (deg C) Redox (mV) Turbidity (NTU) Oxygen(%) Before/After
6/19/2023 13:55 14.66 3983 6.68 16.09 241 9.0 85.0
6/20/2023 7:35 3737 6.84 14.60 Before
6/20/2023 7:36 3740 6.86 14.58 After
Pumping Rate Calculations
[volume of water purged (gals) 14.66 Flow Rate (Q = S/60) (gal/min) 11.00
Time to evacuate 2 Casing Volumes (min) 1.33 I Final Depth to Water Jfeet) 93.13 Number of casing Volumes 1.25
Volume, if well evacuated to dryness (gals) 14.66
Name of Certified Analytical Laboratory
AWSL
Analytical Samples Information
Sample Container Preservative
Type of Sample/Analysis Collected? Matrix Number Type Sample Filtered? Type Added?
VOCs-Chloroform y WATER 3 40ml VOA u HCI (pH<2), 4 Deg C y
Chloride y WATER 1 500-ml Poly u None N
Nitrate/nitrite as N y WATER 1 250-ml HOPE u H2SO4 (pH<2), 4 Deg C y
Comments:
Arrived on site at 1350. Purge began at 1354. Purged well for a total of 1 minute and 20 seconds. Purged well dry. Water was mostly clear. Purge ended at 1355. Left site at 1358. Arrived on site at
0731. Depth to water was 77.95. Samples bailed and collected at 0735. Left site at 0737.
Signature of Field Technician
~ ., , '.,u.A: __ -.-!--/. _,,-,;;,; / , ·. __ , d:;.)
Groundwater Discharge Permit
~
' ~-s;-~ ~.-~ :_. ~ ~
Groundwater Monitoring Quality Assurance Plan
White Mesa Mill
Field Data Worksheet For Groundwater
Location ID TW4-35 Sampling_ Program Chloroform Monitoring
Field Sample ID TW4-35 06202023 Sampling Event 2023 Q2 Chloroform
Purge Date & Time 6/19/2023 12:12
Sample Date & Time 6/20/2023 7:01 I sampler TH/DL
Purging Equipment Pump Weather Conditions Sunny and windy
Pump Type Grundfos External Ambient Temperature (C) 25
Purging Method 2 Casings Previous Well Sampled TW4-43
Casing Volume (gal) 6.91
Calculated Casing Volumes Purge Duration (min) 1.25
pH Buffer 7.0 7.0 Well Depth (ft) 86.50
pH Buffer 4.0 4.0 Well Casing Diameter (in) 4
Specific Conductance (micromhos) 1000 Depth to Water Before Purging (ft) 75.91
Conductivity pH(pH Dissolved
Date/Time Gallons Purged (gal) (um hos/cm) Units) Temp (deg C) Redox (mV) Turbidity (NTU) Oxygen(%) Before/After
6/19/2023 12:12 7.33 4622 6.70 16.12 390 3.0 48.0
6/20/2023 7:01 4314 6.40 16.10 Before
6/20/2023 7:02 4318 6.43 16.08 After
I Volume of water purged (gals)
Pumpin9 Rate Calculations
7.33 Flow Rate (Q = S/60) (gal/min) 11.00
Time to evacuate 2 Casing Volumes (min) 0.66 I Final Depth to Water (feet) 84.10 Number of casing Volumes 1.06
Volume, if well evacuated to dryness (gals) 7.33
Name of Certified Analytical Laboratory
AWSL
Analytical Samples Information
Sample Container Preservative
Type of Sample/Analysis Collected? Matrix Number Type Sample Filtered? Type Added?
VOCs-Chloroform y WATER 3 40ml VOA u HCI (pH<2), 4 Deg C y
Chloride y WATER 1 500-ml Poly u None N
Nitrate/nitrite as N y WATER 1 250-ml HDPE u H2SO4 (pH<2), 4 Deg C y
Comments:
Arrived on site at 1208. Purge began at 1212. Purged well for a total of 40 seconds. Purged well dry. Purge ended at 1212. Water was mostly clear. Left site at 1215. Arrived on site at 0657. Depth to
water was 75.95. Samples bailed and collected at 0701. Left site at 0703.
Signature of Field Technician
~ . /. ~~ -____),, -'-"··-<---/·:;/--.:.. ~ ~ -~)
Groundwater Discharge Permit x E!-... w;_::_ c' .
-~ . ' ' . .,,,.·,~y~
-· J_ _,
Groundwater Monitoring Quality Assurance Plan
White Mesa Mill
Field Data Worksheet For Groundwater
Location ID TW4-36 Sampling Program Chloroform Monitoring_
Field Sample ID TW4-36 06152023 Sampling Event 2023 Q2 Chloroform
Purge Date & Time 6/14/2023 12:55
Sample Date & Time 6/15/2023 7:55 [sampler TH/DL
Purging Equipment Pump Weather Conditions Sunny
Pump Type Grundfos External Ambient Temperature (C) 24
Purging Method 2 Casings Previous Well Sampled TW4-14
Casing Volume (gal) 26.51
Calculated Casing Volumes Purge Duration (min) 4.82
pH Buffer 7.0 7.0 Well Depth (ft) 99.41
pH Buffer 4.0 4.0 Well Casing Diameter (in) 4
Specific Conductance (micromhos) 1000 Depth to Water Before Purging (ft) 58.81
Conductivity pH(pH Dissolved
Date/Time Gallons Purged (gal) (um hos/cm) Units) Temp (deg C) Redox (mV) Turbidity (NTU) Oxygen(%) Before/After
6/14/2023 12:58 33.00 2475 6.45 15.87 236 22.0 4.0
6/15/2023 7:55 2503 6.80 14.39 Before
6/15/2023 7:56 2520 6.81 14.41 After
Pumping Rate Calculations
[volume of water purged (gals) 33.00 Flow Rate (Q = S/60) (gal/min) 11.00
Time to evacuate 2 Casing Volumes (min) 3.00
[ Final Depth to Water (feet) 97.49 Number of casing Volumes 1.24
Volume, if well evacuated to dryness (gals) 33.00
Name of Certified Analytical Laboratory
AWSL
Analytical Samples Information
Sample Container Preservative
Type of Sample/Analysis Collected? Matrix Number Type Sample Filtered? Type Added?
voes-Chloroform y WATER 3 40ml VOA u HCI (pH<2), 4 Deg C y
Chloride y WATER 1 500-ml Poly u None N
Nitrate/nitrite as N y WATER 1 250-ml HOPE u H2SO4 (pH<2), 4 Deg C y
Comments:
Arrived on site at 1251. Purge began at 1255. Purged well for a total of 3 minutes. Purged well dry. Purge ended at 1258. Water was a little murky. Left site at 1301. Arrived on site at 0751. Depth to
water was 59.82. Samples bailed and collected at 0755. Left site at 0757.
Signature of Field Technician
--=:') , , '.NA.------/-:/· -:::2~~)
Groundwater Discharge Permit
~~
•,· . .,, --___,,_ l
r ·1 f ,,. ~y~
C -J'
Groundwater Monitoring Quality Assurance Plan
White Mesa Mill
Field Data Worksheet For Groundwater
Location ID TW4-37 Sampling Program Chloroform Monitoring
Field Sample ID TW4-37 06132023 Sampling Event 2023 Q2 Chloroform
Purge Date & Time 6/13/2023 9:04
Sample Date & Time 6/13/2023 9:05 !sampler TH/DL
Purging Equipment Pump Weather Conditions Partly cloudy
Pump Type Grundfos External Ambient Temperature (C) 16
Purging Method 2 Casings Previous Well Sampled TW4-22
Casing Volume (gal) 25.49
Calculated Casing Volumes Purge Duration ()
pH Buffer 7.0 7.0 Well Depth (ft) 113.72
pH Buffer 4.0 4.0 Well Casing Diameter (in) 4
Specific Conductance (micromhos) 1000 Depth to Water Before Purging (ft) 74.67
Conductivity Dissolved
Date/Time Gallons Purged (um hos/cm) pH (pH Units) Temp (deg C) Redox (mV) Turbidity (NTU) Oxygen(%) Before/After
6/13/2023 9:05 4891 6.50 15.20 421 0 68.6
Pumping Rate Calculations I Volume of water purged () Flow Rate (Q = S/60) (gal/min) 18.00
Time to evacuate 2 Casing Volumes ()
[final Depth to Water (fe_et)_ 98.77 Number of casing Volumes
Volume, if well evacuated to dryness O 0
Name of Certified Analytical Laboratory
AWSL
Analytical Samples Information
Sample Container Preservative
Type of Sample/Analysis Collected? Matrix Number Type Sample Filtered? Type Added?
VOCs-Chloroform y WATER 3 40mlVOA u HCI (pH<2), 4 Deg C y
Chloride y WATER 1 500-mL Poly u None N
Nitrate/nitrite as N y WATER 1 250-mL HOPE u H2SO4 (pH<2), 4 Deg C y
Comments:
[ Arrived on site at 0900. Samples collected at 0905. Water was clear. Left site at 0907.
Signature of Field Technician
-,_ , ' .,,-;-: ./
----___) "~ :...J~.;•_....-"L..--,r-:;/, -.:...---.;:..c .... ?)
Groundwater Discharge Permit ,~
~~'Y~
Groundwater Monitoring Quality Assurance Plan
White Mesa Mill
Field Data Worksheet For Groundwater
Location ID TW4-38 Sampling Program Chloroform Monitoring
Field Sample ID TW4-38 06202023 Same_ling Event 2023 Q2 Chloroform
Purge Date & Time 6/19/2023 13:19
Sample Date & Time 6/20/2023 7:20 !sampler TH/DL
Purging Equipment Pump Weather Conditions Sunny and windy
Pump Type Grundfos External Ambient Temperature (C) 26
Purging Method 2 Casings Previous Well Sampled TW4-23
Casing Volume (gal) 34.62
Calculated Casing Volumes Purge Duration (min) 6.29
pH Buffer 7.0 7.0 Well Depth (ft) 113.92
pH Buffer 4.0 4.0 Well Casing Diameter (in) 4
Specific Conductance (micromhos) 1000 Depth to Water Before Purging (ft) 60.90
Conductivity pH(pH Dissolved
Date/Time Gallons Purged (gal) (um hos/cm) Units) Temp (deg C) Redox (mV) Turbidity (NTU) Oxygen(%) Before/After
6/19/2023 13:23 44.00 1610 6.90 15.28 186 5.0 78.0
6/19/2023 13:24 55.00 1689 6.85 15.13 198 6.2 75.0
6/19/2023 13:25 66.00 1790 6.79 14.99 209 6.5 70.0
6/19/2023 13:26 77.00 1777 6.76 14.96 216 6.7 71.0
Pumping Rate Calculations
!Volume of~water p_urged (gals) 77.00 Flow Rate (Q = S/60) (gal/min) 11.00
Time to evacuate 2 Casing Volumes (min) 7.00
!Final Depth to Water (feet) 107.23 Number of casing Volumes 2.00
Volume, if well evacuated to dryness () 0
Name of Certified Analytical Laboratory
AWSL
Analytical Samples Information
Sample Container Preservative
Type of Sample/ Analysis Collected? Matrix Number Type Sample Filtered? Type Added?
voes-Chloroform y WATER 3 40mlVOA u HCI (pH<2), 4 Deg C y
Chloride y WATER 1 500-ml Poly u None N
Nitrate/nitrite as N y WATER 1 250-ml HDPE u H2SO4 (pH<2), 4 Deg C y
Comments:
Arrived on site at 1315. Purge began at 1319. Purged well for a total of 7 minutes. Purge ended at 1326. Water was mostly clear. Left site at 1328. Arrived on site at 0716. Depth to water was
61 . 18. Samples bailed and collected at 0720. Left site at 0725.
Signature of Field Technician
Groundwater Discharge Permit
~ ,.
-.....__ -. ·1 . :-
__________::;_~' //. . ~-~
~~YF,UEZ.S
Groundwater Monitoring Quality Assurance Plan
White Mesa Mill
Field Data Worksheet For Groundwater
Location ID TW4-39 Sampling Program Chloroform Monitoring
Field Sample ID TW4-39 06132023 Sampling Event 2023 Q2 Chloroform
Purge Date & Time 6/13/2023 9:29
Sample Date & Time 6/13/2023 9:30 !sampler TH/DL
Purging Equipment Pump Weather Conditions Partly cloudy
Pump Type Grundfos External Ambient Temperature (C) 17
Purging Method 2 Casings Previous Well Sampled TW4-37
Casing Volume (gal) 29.94
Calculated Casing Volumes Purge Duration ()
pH Buffer 7.0 7.0 Well Depth (ft) 120.74
pH Buffer 4.0 4.0 Well Casing Diameter (in) 4
Specific Conductance (micromhos) 1000 Depth to Water Before Purging (ft) 74.88
Conductivity Dissolved
Date/Time Gallons Purged (um hos/cm) pH (pH Units) Temp (deg C) Redox (mV) Turbidity (NTU) Oxygen(%) Before/After
6/13/2023 9:29 2204 7.06 16.40 201 1.5 49.0
Pumping Rate Calculations
@::olume of water purged () Flow Rate (Q = S/60) (gal/min) 18.00
Time to evacuate 2 Casing Volumes ()
!Final Depth to Water (feet) 113.78 Number of casing Volumes
Volume, if well evacuated to dryness () 0
Name of Certified Anal}'tic~I Laboratory
AWSL
Analytical Samples Information
Sample Container Preservative
Type of Sample/Analysis Collected? Matrix Number Type Sample Filtered? Type Added?
voes-Chloroform y WATER 3 40ml VOA u HCI (pH<2), 4 Deg C y
Chloride y WATER 1 500-ml Poly u None N
Nitrate/nitrite as N y WATER 1 250-ml HOPE u H2SO4 (pH<2), 4 Deg C y
Comments: I Arrive_cl__ on site aJ 09~6. Samples collected at 0930. Water was clear. Left site at 0933.
Signature of Field Technician
~ ,,,,,.-_-<.._--/-;/-
Groundwater Discharge Permit x e-----... ~ .. y -. ,. ~ , ,,/i· . -r
' _,/r.·· i ~y~
Groundwater Monitoring Quality Assurance Plan
White Mesa Mill
Field Data Worksheet For Groundwater
-
Location ID TW4-40 Sampling Program Chloroform Monitoring
Field Sample ID TW4-40_06132023 Sampling Event 2023 Q2 Chloroform
Purge Date & Time 6/13/2023 10:35
Sample Date & Time 6/13/2023 10:35 !sampler TH/DL
Purging Equipment Pump Weather Conditions Partly cloudy
Pump Type Grundfos External Ambient Temperature (C) 19
Purging Method 2 Casings Previous Well Sampled TW4-04
Casing Volume (gal) 7.74
Calculated Casing Volumes Purge Duration ()
pH Buffer 7.0 7.0 Well Depth (ft) 86.00
pH Buffer 4.0 4.0 Well Casing Diameter (in) 4
Specific Conductance (micromhos) 1000 Depth to Water Before Purging (ft) 74.14
Conductivity Dissolved
Date/Time Gallons Purged (um hos/cm) pH (pH Units) Temp (deg C) Redox (mV) Turbidity (NTU) Oxygen(%) Before/After
6/13/2023 10:35 4135 7.10 15.78 237 0 72.9
Pumping Rate Calculations
[volume of water purged () Flow Rate (Q = S/60) (gal/min) 18.00
[Final Depth to Water (feet) 83.12
Time to evacuate 2 Casing Volumes ()
Number of casing Volumes
Volume, if well evacuated to dryness () 0
Name of Certified Analytical Laboratory
AWSL
Analytlcal Samples Information
Sample Container Preservative
Type of Sample/Analysis Collected? Matrix Number Type Sample Filtered? Type Added?
voes-Chloroform y WATER 3 40mlVOA u HCI (pH<2), 4 Deg C y
Chloride y WATER 1 500-ml Poly u None N
Nitrate/nitrite as N y WATER 1 250-ml HDPE u H2SO4 (pH<2), 4 Deg C y
Comments:
[ Arrived on site at 1031. Samples collected at 1035. Water was clear. Left site at 1037.
Signature of Field Technician
~u, c,,.r-<----J-/-«~)
Groundwater Discharge Permit ~s ... ~·-L, . ' .
. -,I •
. . _/_, .' ~y~
Groundwater Monitoring Quality Assurance Plan
White Mesa Mill
Field Data Worksheet For Groundwater
Location ID TW4-41 Sampllng_ Program Chloroform Monitoring
Field Sample ID TW4-41 06132023 Sampling Event 2023 Q2 Chloroform
Purge Date & Time 6/13/2023 10:17
Sample Date & Time 6/13/2023 10:18 [sampler TH/DL
Purging Equipment Pump Weather Conditions Partly cloudy
Pump Type Grundfos External Ambient Temperature (C) 18
Purging Method 2 Casings Previous Well Sampled TW4-01
Casing Volume (gal) 12.26
Calculated Casing Volumes Purge Duration ()
pH Buffer 7.0 7.0 Well Depth (ft) 97.75
pH Buffer 4.0 4.0 Well Casing Diameter (in) 6
Specific Conductance (micromhos) 1000 Depth to Water Before Purging (ft) 89.40
Conductivity Dissolved
Date/Time Gallons Purged (um hos/cm) pH (pH Units) Temp (deg C) Redox (mV) Turbidity (NTU) Oxygen(%) Before/After
6/13/2023 10:18 2700 7.30 17.05 229 1.0 99.8
[volume of water purged ()
Pumping Rate Calculations
Flow Rate (Q = S/60) (gal/min) 6.00
Time to evacuate 2 Casing Volumes ()
[ Final Depth to Water (feet) 93.78 Number of casing Volumes
Volume, if well evacuated to dryness () 0
Name of Certified Analytical Laboratory
AWSL
Analyt.ical Samples Information
Sample Container Preservative
Type of Sample/Analysis Collected? Matrix Number Type Sample Filtered? Type Added?
VOCs-Chloroform y WATER 3 40ml VOA u HCI (pH<2), 4 Deg C y
Chloride y WATER 1 500-ml Poly u None N
Nitrate/nitrite as N y WATER 1 250-ml HDPE u H2SO4 (pH<2), 4 Deg C y
Comments:
[ Arrived on site at 1014. Samples collected at 1018. Water was clear. Left site at 1019.
Signature of Field Technician
~ , , c,._,. A, __ c.~/; -_:::2~)
c--~~·····•·~ y~ -~,-/~ ~~
., .
Location ID
Field Sample ID
Purge Date & Time
Sample Date & Time
Purging Equipment
Pump Type
Purging Method
Casing Volume (gal)
Calculated Casing Volumes Purge Duration (min)
pH Buffer 7.0
pH Buffer 4.0
Specific Conductance (micromhos)
Date/Time Gallons Purged (gal)
6/14/2023 8:00 11.00
6/15/2023 6:33
6/15/2023 6:34
I Volume of water purged (gals)
[Final Depth to Water (feet)
Name of Certified Analytical Laboratory
AWSL
Analttical Samples Information
Type of Sample/Analysis
voes-Chloroform
Chloride
Nitrate/nitrite as N
Comments:
Groundwater Discharge Permit
Groundwater Monitoring Quality Assurance Plan
White Mesa Mill
Field Data Worksheet For Groundwater
TW4-42 Sampling Program Chloroform Monitoring
TW4-42 06152023 Sampling Event 2023 Q2 Chloroform
6/14/2023 7:59
6/15/2023 6:33 [~ampler TH/DL
Pump Weather Conditions Sunny
Grundfos External Ambient Temperature (C) 13
2 Casings Previous Well Sampled TW4-03
9.53
1.73
7.0 Well Depth (ft) 86.00
4.0 Well Casing Diameter (in) 4
1000 Depth to Water Before Purging (ft) 71.40
Conductivity pH(pH Dissolved
(um hos/cm) Units) Temp (deg C) Redox (mV) Turbidity (NTU) Oxygen(%) Before/After
3858 7.38 15.54 399 2.8 101.0
3674 7.20 14.65 Before
3678 7.21 14.61 After
Pumping Rate Calculations
11.00 Flow Rate (Q = S/60) (gal/min) 11.00
Time to evacuate 2 Casing Volumes (min) 1.00
83.41 Number of casing Volumes 1.15
Volume, if well evacuated to dryness (gals) 11.00
Sample Container Preservative
Collected? Matrix Number Type Sample Filtered? Type Added?
y WATER 3 40ml VOA u HCI (pH<2), 4 Deg C y
y WATER 1 500-ml Poly u None N
y WATER 1 250-ml HDPE u H2SO4 (pH<2), 4 Deg C y
Arrived on site at 0754. Purge began at 0759. Purged well for a total of 1 minute. Purged well dry. Purge ended at 0800. Water was clear. Left site at 0803. Arrived on site at 0628. Depth to water
was 71.32. Samples bailed and collected at 0633. Left site at 0636.
Signature of Field Technician
~ . _,,,-;~ ', , ·cr.~..__·<e--,,1-;/o -:.,~ .~ -?)
Groundwater Discharge Permit ~e~YFa¥ZS Groundwater Monitoring Quality Assurance Plan
White Mesa Mill
Field Data Worksheet For Groundwater
Location ID TW4-43 Sampling Program Chloroform Monitoring
Field Sample ID TW4-43 06152023 Sampling Event 2023 Q2 Chloroform
Purge Date & Time 6/14/2023 14:03
Sample Date & Time 6/15/2023 8:13 [sampler TH/DL
Purging Equipment Pump Weather Conditions Sunny
Pump Type Grundfos External Ambient Temperature (C) 24
Purging Method 2 Casings Previous Well Sampled TW4-31
Casing Volume (gal) 14.49
Calculated Casing Volumes Purge Duration (min) 2.63
pH Buffer 7.0 7.0 Well Depth (ft) 95.5
pH Buffer 4.0 4.0 Well Casing Diameter (in) 4
Specific Conductance (micromhos) 1000 Depth to Water Before Purging (ft) 73.30
Conductivity pH(pH Dissolved
Date/Time Gallons Purged (gal) (umhos/cm) Units) Temp (deg C) Redox (mV) Turbidity (NTU) Oxygen(%) Before/After
6/14/2023 14:05 22.00 3592 6.45 15.82 341 6.0 1.9
6/15/2023 8:13 3588 6.80 14.96 Before
6/15/2023 8:14 3586 6.78 15.00 After
Pumping Rate Calculations
[volume of water purged (gals) 22.00 Flow Rate (Q = S/60) (gal/min) 11.00
Time to evacuate 2 Casing Volumes (min) 2.00
[Final Depth to Water (feet) 93.23 Number of casing Volumes 1.51
Volume, if well evacuated to dryness (gals) 22.00
Name of Certified Analyti<:_al Lab~ra~ry
AWSL
Analytical Samples Information
Sample Container Preservative
Type of Sample/Analysis Collected? Matrix Number Type Sample Filtered? Type Added?
voes-Chloroform y WATER 3 40mlVOA u HCI (pH<2), 4 Deg C y
Chloride y WATER 1 500-mL Poly u None N
Nitrate/nitrite as N y WATER 1 250-mL HOPE u H2SO4 (pH<2), 4 Deg C y
Comments:
Arrived on site at 1359. Purge began at 1403. Purged well for a total of 2 minutes. Purge ended at 1405. Water was mostly clear. Purged well dry. Left site at 1408. Arrived on site at 0809. Depth to
water was 73.37. Samples bailed and collected at 0813. Left site at 0815.
Signature of Field Technician
~ ~, "",. -"--I;;/.✓~~j
~~~ (_~~~ ~YFVELS
Location ID
Field Sample ID
Purge Date & Time
Sample Date & Time
Purging Equipment
Pump Type
Purging Method
Casing Volume ()
Calculated Casing Volumes Purge Duration ()
pH Buffer 7.0
pH Buffer 4.0
Specific Conductance (micromhos)
Date/Time Gallons Purged
6/13/2023 12:59
!Volume of water purged ()
I Final Depth to Water (feet)
Name of Certified Analytical Laboratory
AWSL
Analytical Samples Information
Type of Sample/Analysis
VOCs-Chloroform
Chloride
Nitrate/nitrite as N
Comments:
[ Di sample collected in the lab at 1300. Left lab at 1303.
Signature of Field Technician
~,(~-,t., -r/4~
Groundwater Discharge Permit
Groundwater Monitoring Quality Assurance Plan
White Mesa Mill
Field Data Worksheet For Groundwater
TW4-60 Sampling Program Chloroform Monitoring
TW4-60 06132023 Sampling Event 2023 Q2 Chloroform
6/13/2023 12:59
6/13/2023 13:00 [sampler TH/DL
Pump Weather Conditions Partly cloudy
Grundfos External Ambient Temperature (C) 20
2 Casings Previous Well Sampled TW4-19
7.0 Well Depth (ft)
4.0 Well Casing Diameter ()
1000 Depth to Water Before Purging (ft)
Conductivity Dissolved
(um hos/cm) pH (pH Units) Temp (deg C) Redox (mV) Turbidity (NTU) Oxygen(%) Before/After
2.7 7.61 22.30 169 3.8 25.0
Pumping Rate Calculations
Flow Rate (Q = S/60) ()
Time to evacuate 2 Casing Volumes ()
Number of casing Volumes
Volume, if well evacuated to dryness () 0
Sample Container Preservative
Collected? Matrix Number Type Sample Filtered? Type Added?
V WATER 3 40ml VOA u HCI (pH<2), 4 Deg C V
V WATER 1 500-ml Poly u None N
V WATER 1 250-ml HDPE u H2SO4 (pH<2), 4 Deg C V
Groundwater Discharge Permit g e--... ~1·· .. ·' ! .
/ < • ;," ~y~
Groundwater Monitoring Quality Assurance Plan
White Mesa Mill
Field Data Worksheet For Groundwater
Location ID TW4-65 Sampling Program
Field Sample ID TW4-65 06152023 Sampling Event 2023 Q2 Chloroform
Purge Date & Time
Sample Date & Time 6/15/2023 6:33 [sampler TH/DL . I
Purging Equipment Weather Conditions
Pump Type External Ambient Temperature()
Purging Method Previous Well Sampled
Casing Volume ()
Calculated Casing Volumes Purge Duration ()
pH Buffer 7.0 Well Depth (ft)
pH Buffer 4.0 Well Casing Diameter()
Specific Conductance () Depth to Water Before Purging (ft)
Date/Time Gallons Purged Conductivity pH Temp Redox Turbidity I Dissolved Oxygen I Before/After I
Pumping Rate Calculations
[volume of water purged () Flow Rate (Q = S/60) ()
Time to evacuate 2 Casing Volumes ()
[ Final Depth to Water (feet) Number of casing Volumes
Volume, if well evacuated to dryness O
Name of Certified Analytical Laboratory
AWSL
Analytical Samples Information
Sample Container Preservative
Type of Sample/ Analysis Collected? Matrix Number Type Sample Filtered? Type Added?
VOCs-Chloroform y WATER 3 40ml VOA u HCI (pH<2), 4 Deg C y
Chloride y WATER 1 500-ml Poly u None N
Nitrate/nitrite as N y WATER 1 250-ml HDPE u H2SO4 (pH<2), 4 Deg C y
Comments:
Duplicate of TW4-42
Signature of Field Technician
---... . /2 ~ / ....__;"', er.,._,,_ -1-/-:.,,'L:. ;r.~7
Location ID
Field Sample ID
Purge Date & Time
Sample Date & Time
Purging Equipment
Pump Type
Purging Method
Casing Volume ()
t~· ..-~YFLIEZ:S
Calculated Casing Volumes Purge Duration ()
pH Buffer 7.0
pH Buffer 4.0
Specific Conductance ()
Date/Time Gallons Purged
I Volume of water purged O
I Final Depth !o Water (feet)
Name of Certified Analytical Laboratory
AWSL
Analytical Samples Information
Type of Sample/Analysis
voes-Chloroform
Chloride
Nitrate/nitrite as N
Comments:
[ Duplicate of TW4-38
Signature of Field Technician
~.,, '""~·-c--r/ C:£'.~)
Groundwater Discharge Permit
Groundwater Monitoring Quality Assurance Plan
White Mesa Mill
Field Data Worksheet For Groundwater
TW4-70 Sampling Program
TW4-70 06202023 Sampling Event
6/20/2023 7:20 [sampler
Weather Conditions
External Ambient Temperature ()
Previous Well Sampled
Well Depth (ft)
Well Casing Diameter ()
Depth to Water Before Purging (ft)
Conductivity pH Temp Redox Turbidity
Pumping Rate Calculations
Flow Rate (Q = S/60) ()
Time to evacuate 2 Casing Volumes ()
Number of casing Volumes
Volume, if well evacuated to dryness ()
Sample Container
2023 Q2 Chloroform
TH/DL
Dissolved
Oxygen
Preservative
Before/After
Collected? Matrix Number Type Sample Filtered? Type Added?
y WATER 3 40mlVOA u HCI (pH<2), 4 Deg C y
y WATER 1 500-ml Poly u None N
y WATER 1 250-ml HDPE u H2SO4 (pH<2), 4 Deg C y
Groundwater Discharge Permit
~.~·~,; C;;;~~
( ~y~
Groundwater Monitoring Quality Assurance Plan
White Mesa Mill
Field Data Worksheet For Groundwater
Location ID TW4-75 Sampling Program
Field Sample ID TW4-75 06212023 Sampling Event 2023 Q2 Chloroform
Purge Date & Time
Sample Date & Time 6/21/2023 7:15 [sampler TH/DL
Purging Equipment Weather Conditions
Pump Type External Ambient Temperature ()
Purging Method Previous Well Sampled
Casing Volume ()
Calculated Casing Volumes Purge Duration ()
pH Buffer 7.0 Well Depth (ft)
pH Buffer 4.0 Well Casing Diameter ()
Specific Conductance () Depth to Water Before Purging (ft)
Date/Time Gallons Purged Conductivity pH Temp Redox Turbidity Before/After
Pumping Rate Calculations
[ Volume of water purged () Flow Rate (Q = S/60) ()
Time to evacuate 2 Casing Volumes ()
I Final Depth to WateJ {feet) Number of casing Volumes
Volume, if well evacuated to dryness ()
Name of Certified Analytical Laboratory
AWSL
Analytical Same_les Information
Sample Container Preservative
Type of Sample/Analysis Collected? Matrix Number Type Sample Filtered? Type Added?
VOCs-Chloroform y WATER 3 40ml VOA u HCI (pH<2), 4 Deg C y
Chloride y WATER 1 500-ml Poly u None N
Nitrate/nitrite as N y WATER 1 250-ml HDPE u H2SO4 (pH<2), 4 Deg C y
Comments:
[ Duplicate of TW4-09
Signature of Field Technician
~,, ,~,,_c.__,-Hi-¾~)
TabC
Weekly and Monthly Depth to Water Data
Weekly Inspection Form
Date ~1-:,-a3 Name OeA v J cme a
J System Operational (If no note
Time Well Depth* Comments anv problems/corrective actions)
l>S\ 'n MW-4 9'c.{,&../q Flow "' n ,... No
Meter .,,,,;c, '"'it, 7 :;,i n ~ ~ No
()1&;-:J. MW-26 -, ',,"la Flow It.. (') --No
Meter 7qq ,;-o t n ... No
ll"l,i;-' TW4-19 "'1..,, {A() Flow JI. n .... No
Meter t',. /) /. '> 7,J. c,q ... No
0~21,i' TW4-4 ~7,,/,..f) Flow JI,. D .... No
Meter df.,7, t::79L.t:/ .._ No
nl'-<D TWN-2 t:q. /'j Flow II~ '!1 ..... No
Meter Jq t.f~ ~'I. qt:, ... No
tJ7/J:J TW4-22 /."I q~ Flow I(. (J ,... No
Meter Q t.. '-l r,; 7, -r .._ No
(}I,.~.., TW4-24 l'-.V...77 Flow I kJ, L/ ,,._ No
Meter 2 1 ; ~ ~ ,; ~ ~ 1 !fllas. No
fl/,, L/ t;' TW4-25 /-'t. ~/-Flow /;t,.. 9 ~ No
Meter /f{ Oct. 1-.1..~ .irl ,.. No
/J~ I .t::' TW4-1 I fJI. t(/_.. Flow , ~ .Q ... No
Meter LI ,2 ~n::, ~ 1 ,_ No
"" n < TW4-2 I nr:;", (,,,:;-Flow IC, _I) .!!las No
Meter ,; ~ T tJ ,:r 1,, • er ws No
01~'if TW4-11 ~q.2 ~ Flow 1r;'/,,, • No
Meter 1 '3l11q. ~ r .. "IIN5 No q ~
()/4'({) TW4-21 71/.l'J C Flow I/,. /1 'ta. No
Meter 3 3 31//n 7 8 su. 'tila. No
n 7"i /J TW4-37 /AtJ. ,"In Flow ' Cjl {J l9a No
Meter 1 3 2 ":-19.11!. /4 . () Be No
1r11./-, TW4-39 7 J./ -:z,41t Flow I-~ D -No
Meter , o fA 9. 1~ '-I .J 'Ills No
nsr~~ TW4-40 ~ Flow J'il..fl .. No
Meter-)\ _J ;--;-, a i'1171 n1 .'f.,.,__ No
(J~ 19 TW4-41 ~~ q/. Flow /,. /)
_... No
Meter 4 ~ 1. r,. <1. ~ , n 1 .. No
Operational Problems (Please list well number):
Corrective Action(s) Taken (Please list well number): -----------------
* Depth is measured to the nearest 0.01 feet.
Weekly Inspection Form
Date '(-(tl<l.1 Name 0 t'eo G-lyma-;, ¼nee tt,,/1,+
· System Operational (ff no note
Time Well De oth* Comments anv problems/corrective actions)
t>Q ':lCI MW-4 il'l.1~ Flow ~ 0 ... No
Meter 1 ·11.n11 ~1 R~ 111111 No
/J'ln -r MW-26 I l'.l ~::J Flow 1 ,A n ..... No
Meter ~ /) , t,. ,rn ~ '1a!-No
111'1.r:' TW4-19 -,I,( 9. /,. Flow If. {J ... No
Meter Lit.~.;~ t,. 1 ... No
/f)f\~ TW4-4 .,, ,. t::; I,. Flow ,if 9. ,_ No
Meter ~ ~ ,~ 'VI~-n k No
n4.n-, TWN-2 ,;q ~.,, I Flow /1-. .<'I ,.. No
Meter , Qr,.7nn.7"1' fM No
oa "',2 TW4-22 la "1 J '1 Flow I<. D ... No
Meter Q , .. < 9, 1l ft <jf ,_ No
\
o~~c TW4-24 /A~ r:-'f Flow I,;"'. (,, --No
Meter 1, ci ~ 1 7 ,. nq .. No
07 ,;-~ TW4-25 7{'),7\ Flow 1n t. -No
Meter ' ,r I < l'a "t q q :1 '!ts No
()q~n TW4-1 I 0~ "ff, Flow i~ {,, ... No
Meter ":2 1. r.:-:i q c;-... No
nq~{\ TW4-2 IIY,l."I Flow I'"· :J 9s No
Meter i;-2 Q{;ll)/J ::J ~ No
nQ IC:: TW4-11 'HI 1-f Flow ,,;:_ I/ ._ No
Meter 14n 711 "'~ "IIE No
07{j() TW4-21 ~~~c:rn Flow I{. 2 ... No
Meter ~ 1l "' , , ~ ,.. , -, .... No
fH{'-/.il TW4-37 G, Cf ~, t;' Flow Jfl /J .. No
Meter 2~~~1~7 ,,. l\85, No
lHffll TW4-39 ,y _yq Flow ,~ /1 • No
Meter , n ., n ~ ,: , ,,, ~ No
,n,"J. TW4-40 i "'\ -~.;--Flow , ~ '11 ir. No
Meter I I -r r. f'l 7,t;" '\ r. .,_. No
oq~-R TW4-41 C\ I \ D Flow C:. fa 11111 No
Meter ""1 'l..-.," n~ ~ No
Operational Problems (Please list well number):
Corrective Action(s) Taken (Please list well number):
"' Depth is measured to the nearest 0.01 feet.
Weekly Inspection Form
Date Namecz::::k k::'7"'✓v', ~.::c: t,a//.~, vstem Operationahltno note
Time Well Deoth* Comments anv problems/corrective actions) -1JtH4 MW-4 CZl.f tl ~ Flow 'f, (J ,_ No
Meter 3t.. o 9 11. :J l' ~ ~ No
0'1.t:~ MW-26 -,c;-, /../4 Flow /(,,/J 1!1111 No
Meter «n ~e-c. ':I. 'I "'11115 No
, I') '2, g TW4-19 "11./ ,;-1 Flow //.. "-.. .. No
Meter r.. 1 r,. ~ n J .l ;'" .. No
oq , n TW4-4 ~"1. ~ n Flow 111 ;n "ll!IE No
Meter Sl 7, r. q q 1 !ii ~ No
Ott l IA TWN-2 ~4' l.l Flow u •. n ..... No . Meter I q ii~ n t •. '13 "k No
OSJ~q TW4-22 ., ,,,, '-Ir Flow ' 'A f) .... No
Meter q ~ 7 s-~ 7. /,. .... No
mHI TW4-24 _,;,Cf qg Flow f IA, 1 ... No
Meter ,3_ , ~ t. o n q. ~ 2 ... No
og-1q TW4-25 -rn. ,~ Flow ,o.g .... No
Meter lt;"'".2~'.l0!7 9.D '\115 No
l)Q f q TW4-1 qq ~(} Flow I 2. G. .... No
Meter 41"14~~/J ~ No
n.anq TW4-2 q ~ 'l._1/ Flow J/_ r,,.._ 'as No
Meter ("' 2 qt:. i:-I;'. ::1 .,_ No
Ot:103 TW4-11 St.~/ Flow ,,;.fA-"tile No
Meter , ~ t -, " . 9. ,;-.. No
/)JI/~ TW4-21 ,-,,,o Flow //-. 0 .... No
Meter "3 3 &./"1 ~ 7 ?. 7-S .. No
IJtl.1,/ < TW4-37 I.A.Jr{' Flow , .,_. n .. No
Meter .2 ~ <2, , c;-4 c:-. ~ :3l!llll No
n,xt:'n TW4-39 ""1.., '3 (A Flow J(}.,0 ... No
Meter , n -, -,, r .. 1 '1 "1 .. No
()C(7i7 TW4-40 ..,~ , 1 Flow I~ (') ... No
Meter 1 , -, q ~ l. z;-·vr .. No
OCJlt; TW4-41 q{J I I. Flow t:. n .... No
Meter "4 -z,,., ~ o o u t,. -No
Operational Problems (Please list well number}:
Corrective Action(s) Taken (Please list well number): -----------------
* Depth is measured to the nearest 0.01 feet.
Weekly Inspection Form
Date
Time Well Depth* Comments
I"\ 12 MW-4 q, II I&./ Flow -.c./ {)
Meter ~ I I c:-Q .., n ~,.,,
11~< MW-26 qn ,:-, Flow /(,. ~
Meter 8n~l./ 1r. _ Q
'"'~ /. TW4-19 "7~-~q Flow lu,O --. Mete ~ 3~ l~O. '1'«, -,~2 -. TW4-4 ~q qq Flow ,,An
Meter 111 7.(';., , ,
no.i:t: TWN-2 "q .SJ/ .. Flow '"· fl Meter ., n n a -re -, ,,.
It> 2' TW4-22 ,._«_:a. n Flow , ,,. .,
Meter c;it 1. q ~ 02 '"1. q
1nnn TW4-24 /..i ,.~ Flow ,,,. n
Meter !J I Q QQ '\ n ,;-q
nq~~ TW4-25 "71./. '-I H Flow 1n rt.
Meter '"' ~'ilciQQ -.:20.
I~ 19. TW4-1 I()~ t.q Flow .~ I'.
Meter IJ., ~ f;.F.. L:'. 4
,~nt. TW4-2 111 I ::I Flow ,<_ <l
Meter ("' ~ n ,i-., 11 -:::1
i~n I TW4-11 CM OT Flow ,,,._ 0
Meter 1'-4 ".2 .,..q ., t:"
(}~ l,,f r, TW4-21 ,, , •• ::i .;-Flow I I. ,i
Meter 'l ~'-'-'n., r ... ,e-,n
,n~n TW4-37 , .. ,_/'} Flow I CZ . I'>
Meter ~ -:1. ~ ,., « ,,. c: ~
IIJ "J,l. TW4-39 -,2 '1C' Flow 1«,.
Meter , n.., t::' 1 n n _ r:-
1"\7,,~ TW4-40 ..,,_,r,. Flow IQ. fJ
Meter , 1 ~.:1 c::,11 ~ t>Q
J '3 2. "4 TW4-41 9,i;t ~1 Flow <:. /,.
Meter ,.,~,:-,:,at:"q,;-
Operational Problems (Please list well number). /
Corrective Action(s) Taken (Please list well number):
* Depth is measured to the nearest 0.01 feet.
~
System Operational (If no note
anv problems/corrective actions) ,.__ No -No .... No ... No .. No ,.. No ... No .. No
~ No -No .... No .... No .... No .. No
-ae No
'JIN. No
11::s No .. No
la No ... No
11s No ... No .. No ... No
'a. No
~ No .... No ,_ No
~ No ... No .. No .... No
Monthly Depth Check Form
Date 4 .. JS-., 3 Name 4'aoa: &llir~wifP-a -
Time Well Depth* Time Well Depth*
Q9~1 MW-4 Si19.I Qg3c> TWN-1 2018.0
Q9 !:tt;"' TW4-1 l Ql£~a, Q8'.ol I TWN-2 "-~.l~
oq.39 TW4-2 lQ'3, ~Q D~l~ TWN-3 . ~lf .55
OZ~..5 TW4-3 &;5,ZI 081~ TWN-4 b3.b~
Q9~3 TW4-4 ia, I(. Q[OD TWN-7 ]t ,5 1 o~~, TW4-5 73.~8: QfS:lO TWN-18 b~.I~
OKI] TW4-6 80,3 :1 030~ MW-27 5 8', '10
Ot:lD TW4-7 z2.,c 0'.:! 1!2.. MW-30 1S,3'=,
08~ TW4-8 ~Si~ 091..S MW-31 bg, '-'=-
Of>3t> TW4-9 ]_I.~,
oSJj TW4-10 70.(:.1
093;--TW4-11 g:g.:19
0,.53 TW4-12 5b,1~
015~ TW4-13 51 .-7fo Q,~,. TW4-29 7~,51
0303 TW4-14 77.35 o1Y8 TW4-30 7f>.~5
0931 MW-26 ··s ;a .~::z 015'2 TW4-31 1",;;..l
0'63'=, TW4-16 ]'-1,qb 075'-TW4-32 S71S~
Q~3~ MW-32 K3,I] O]:!>i TW4-33 1<i.17
Qfi:35 TW4-18 11¾,5~ 030-5 TW4-34 77,gg
lO.l,; TW4-19 I3,1S: Q1.jJ TW4-35 1519-0
Q3"l5 TW4-21 73.fo5 D8DI TW4-36 53-&.'>
Q9l9 TW4-22 6,13,8Ga '29---~ TW4-37 13,1&5'
QSJ::l TW4-23 ]b 9 l O(>'J,.i TW4-38 f,C>. 'f3
091S: TW4-24 ~~.~t3 Q~61 TW4-39 7..~i 3S:
o~~ TW4-25 f,~~~I Q9S:S TW4-40 :13. ,a
0~15 TW4-26 1 5,:;l..O Q9 'l~. TW4-41 ~fl..0.3
Q]3'l TW4-27 1~.2~ OJ~S TW4-42 71 d--3
o,5.5 TW4-28 so.~ 01"i'1 TW4-43 73,Li I
Comments: (Please note the well number for any comments)
* Depth is measured to the nearest 0.01 feet
Weekly Inspection Form
Date Nam~" c-7.,,-:z &4 ec 6&1~, S ;em Ooerationat~fnonote
Time Well Deoth* Comments anv problems/corrective actions)
nq~, MW-4 cr!l. ,,~ Flow "f. /] -No
Meter ~ 1.. ~ 'l 1 /_,a 1111 ... No
n'll:J. MW-26 "7(:.,qJ. Flow "-· n 1!l!s No
Meter ~ o 1 3 n:, . 1 ... No
Int./~ TW4-19 ,&./,-Z.\ Flow J /,., n ... No
Meter~4('~1,~ ,n '1M No
1n2n TW4-4 'Zt:".I.D Flow II.. n ... No
Meter ~ ~ ~ t n ~ -, ... No
ll9. ?,(I TWN-2 C.~ «I Flow ' ,:.-, t:.. ... No
Meter .:1.. ti :l I' .. :i ~ r.. q .. No
OA,.-1 TW4-22 /,. '1.. ""1 Flow It. _Q ~ No
Meter Cl7 tJ q -, "1. n .. No
n~ a.le:' TW4-24 /,, 9 q r;-Flow l Ci". ,Q. 1!N No
Meter .21 cr"2i.G\ca.Q n~ ... No
n" ~ • TW4-25 ~ ct qc;'" Flow I l'J ?.. ,.. No
Meter , ~ ~ 5' ;·ii!\~ ~.R ~ No
nQ'-1.l'J TW4-1 111n ·u. Flow 1 'l ~ ~ No
Meter "' 2 « '-I l1 2 . , 191g No
o<r~5 TW4-2 Io<. 19. Flow IIL..O '11s No
Meter 5' ~ ( L.l r; I , /1 21116 No
nq1.., TW4-11 ~'i{ ..,.,. Flow ,<.~ ... No
Meter 11-f. 3 7 7 .7/J ... No
n,;<nn TW4-21 ..,t'...""1~ Flow I fn !I .. No
Meter '?,,._··:q,, o.., .2 -, • ,., 1 ... No
-
nG t:'"f_ TW4-37 .1.,q (,.7 Flow ,~ 0 "-No
Meter ~ ~ ,. 'it , .i; ,:, -a 1i11!15 No
nqn< TW4-39 '7~1 r;-'J Flow /<;I. (J ]la. No
Meter I t1 , , i-f , ;i: 7> .._. No
, ,, 2.Q TW4-40 "11 ,..,. Flow 19' 0 ... No
Meter 1 1 ~ /,, ~ .., 1 , c; l 1im No
111/t;' TW4-41 din. l:Z Flow ~ ~ -.is No
Meter '-I 31.n O I. t;-, 'Iii& No
Operational Problems (Please list well number):
Corrective Action(s) Taken (Please list well number):
* Depth is measured to the nearest 0.01 feet.
Weekly Inspection Form
Date Name -Z'<:ro &1-D.'.6, --,;-,u,e,e q,. a;.i!..,.
vstem Operational ;;?;:note
Time Well Depth* Comments anv problems/corrective actions)
n4~'l MW-4 "'I{, t;fl Flow l,J n 111111s No
Meter ~ ~ ~ q ~ e :1 -:i .2 .,_ No
nq1q MW-26 -,q nn Flow , ,:-, s( ... No
Meter A D q :l 2 ~ tJ 'Ill, No
IA i:'1-1 TW4-19 ""1~C\~ Flow JI',,. I) .. No
Meter t....!"lfl/ .. q. /,.3 ... No
()Qt:(,. TW4-4 « ,. t; :J. Flow lfh.:J. .. No
Meter SI-,,~ 7q 2 1 -No
n9Jt; I TWN-2 t:. -;] . "1 , Flow ,1,..n -No
Meter ~ n ,.,, "1 1 -,. r. a ... No
aqn~ TW4-22 -,n ~ t.. Flow I /,. j. ---No
Meter q"11. 1,.1. f,., ~ ... No
nt1~/,. TW4-24 IA 'il, I<;' Flow I f,,.,n a. No
Meter ~ 1 q ; q I q _1::1 9:. No
n~"~ TW4-25 f'. ti/ tfl I Flow 1 ll ~ ,_ No -Meter , c-'-' , ii-..:i 9, "Io .. No
.nqL.f'-t TW4-1 ,o~ '1~ Flow I 1 ,/,,. ... No
Meter ""' 2 q 1 7 n. 1 ,_ No
oq1 I TW4-2 I I{) '-I '-l Flow I f11. () ,.. No
Meter ~ -,, 'l ~ o 1 . :i. .... No
nQ"'.lt: TW4-11 c;tQ ~n Flow 1tA n ... No
Meter , ... , 1.1 t. ~, 7 -a, '1!1115 No
/
Ost 3SC TW4-21 7r;':~~ Flow ,,_ 19 -No
Meter ~~t..t.sr 7t:f~II -. No
/)it.I f)Q TW4-37 ~q ,o Flow '~ /) .. No
Meter ~ ~ "" , '-' '-' « ~ ,,.... No
Ot::flt-/ TW4-39 -, ~. h"f Flow I "it f'J 1-No
Meter ,n"fqf_q-r n ,__ No
', 00', TW4-40 "1 ".l .~Li Flow I~ 0 .... No
Meter 11ta.q"fn2-~"' .. No
nq~o TW4-41 ~C',L I~ Flow I. D 111s No
Metef ~ 3 , .. ~ 7 t,. t,.8 ~ No
Operational Problems (Please list well number):
Corrective Action(s) Taken (Please list well number):
* Depth is measured to the nearest 0.01. feet.
"--!.
-----------------
.,_,
Monthly Depth Check Form
Date 5 ... ta -g-:, Name :tho r-tror•"7 tw« 14(,:tf
Time Well Depth* Time Well Depth*
o.1s=., MW-4 9, 2... .1 j5 Ql'"(~ TWN-1 -_i{J_.13
,uu::!l: TW4-1 l'1.A1,, Q]S:,~ TWN-2 ~!, 2.Gt
as~~ TW4-2 ltl:l,lb a 21 Q tit TWN-3 ~~-S:Q
Q931, TW4-3 ,r-. :Ii;-QSLQ TWN-4 t.3.~~
Q~aa. TW4-4 $3 2tl. Ot~ TWN-7 l!l,3!:
a!:2a. TW4-5 -:1.3,aa QS(!i: TWN-18 C.3,Q.2
a9!1:? TW4-6 ·SQ.33: 01ft. MW-27 rs.so
ag~a TW4-7 sa.7£ za~a MW-30 '1£.:Z.1
tl!1Ct TW4-8 '&.S: 1-':l. 1'2~ 1 MW-31 t,!, i.7
Q~~ TW4-9 Ile 2■,
Q~U! TW4-10 za. t.. s::
a,~l TW4-11 i9.1 ll
(Q(, TW4-12 £('!.Ct&
lfl.1,:-TW4-13 s:.z~:r.c · l~!S: TW4-29 1!.38
t!:f:Sl TW4-14 -:t..':t... ;&~ i~I! TW4-30 lS: l~
Q9I~ MW-26 j(,QI l~l2 TW4-31 z,.aa
12!11 TW4-16 1.~g_~ 10:z.S:: TW4-32 £1"'a.Q
•o~a MW-32 Sl,O'I. l~Q~ TW4-33 Z'l., 2.1
al39 TW4-18 7.~,~.-1 l~U.1 TW4-34 1111.1.
l!iS:t TW4-19 ::zi. ~, ltJI TW4-35 IS..I~
112X~S TW4-21 2~■l! ,~ ~ ~ TW4-36 £1,1'.Q
'2$2..S TW4-22 t't~,Sl: 0532. TW4-37 ::u •. i~
a~u::a TW4-23 11.:,fl.1 0~2..! TW4-38 Gif1.,"
a1a..~ TW4-24 f.r'l, L 1. a.i:l'-TW4-39 -:t.1,M
t2. ZS::. l TW4-25 ,~-~~ a!as · TW4-40 -:,.~ 1::Z!t
0$:3g TW4-26 ~-i.i.2.0 CUl5:I TW4-41 ~Q.Q9
t!:l.tJI TW4-27 t.f.., l 1. ,~aa TW4-42 ll,ll
/0:LJ TW4-28 S't2,L8 l':f 2,3 TW4-43 '71 u::
Comments: (Please note the well number for any comments)
* Depth is measured to the nearest 0.01 feet
Weekly Inspection Form
Date
Time Well Depth*
Name-a,.,, ~una/4 {M«Yffi/1/,z
System OperatiaHtf no note
Comments anv Problems/corrective actions)
/)q,;q MW-4 ii'.?. <ID Flow "/ ~ 0 1l!l5 No
Meter ·H .. ~~99n.f'f 1-No
oqi.f!2 MW-26 -, <. (. (J Flow '("'. 9, • No
Meter e , , "1 ~ , , -r ,. No
12. "0 TW4-19 ~~ .ii 2 Flow 11... 0 ~ No
Meter r.1. 4" 1 ~ ll 1. • No
/0 '1 (\ TW4-4 R Q . '17 Flow , ,,_ n ... No
Meter ~ 3 q "f ~ O. Q ... No
IO~lln TWN-2 ~~tfl: Flow //;. 0 .... No
Meter -, n 1 n., :,_ 1 .. /. ~ No
oq"2n TW4-22 r.q C.I Flow ,r .. n ... No
Meter q 7 ,., -, , n ~ 'Ill;-No
J?q J ,;-TW4-24 1.,q, ()1.. Flow l~I'.. ,_ No
Meter ~ "1. t'I -:,,.ne1. ~ ~ .. No
n9. I(,. TW4-25 ~1,(' ;~ Flow J"l ,n ,.. No
Meter I ,:-11 '1 '-/ l:f "f. I ,;--... No
/()f)~ TW4-1 'n, .. "It> Flow I ::J. 'l.
,._ No
Meter loj".1.._q9.~q \ .... No
qqt5'L TW4-2 "'If~ Flow I(,. I) ..... No
Meter ~-:r.~":\""77-n ... No
oq&.(.., TW4-11 Cit> ,~ Flow I c;-_ "-.. No
Meter , '-I c;-q.... ".!l ~ No
D~OJ TW4-21 -, 1/ ~'Sl Flow '"--~ ... No
Meter ·3 "7i -, < I':) ~ , 1 ~ ... No
l)Q ~ I. TW4-37 1...q_q~ Flow J 'i n • No
Meter ~,11,:~~n , ,.._ No
OQ?.1 TW4-39 ..., 6,/ J ".l Flow '°" n 'llllii No
Meter , tHt .l l. T n. 9. ,_ No
In '.l I. TW4-40 7!1. ,"'1/.. Flow Ht() -No
Meter I l'l&.ln ~a -::i ~ • No
,n,'i"" TW4-41 ~q -~O Flow (; f) ,_ No
Meter "'-,...., ~ S\ ~ ~9, ... No
Operational Problems (Please list well number):
Corrective Action(s) Taken (Please list well number): -----------------
.,, Depth is measured to the nearest 0.01 feet.
Weekly Inspection Form
Date £,--.U,-2,3 Nam~""• c,,-'1 ~ t¼,1~ 5v :m Operational (If ::o:
Time Well Depth* Comments anv problems/corrective actions)
n, ~,: MW-4 ci~.cu: Flow .., 0 ... No
Meter ~'-~'3'R lft..lJl'J ~ No
O'l I,; MW-26 -, ~ ~'1 Flow u. n ..... No
Meter ft, 31 • .: q. n .... No
m~r;-TW4-19 -,14 ,, Flow I~ () ,._ No
Meter ti 1 n-,. g 7 , '1 9-3 No
oqct. TW4-4 1(/ •. SI!> Flow ,c-.-sa ... No
Meter ~ ~ q Sl :::J -,, ~ 'las No
Ofl/:J... TWN-2 <q ~~ Flow J t. , I'} ~ No
Meter~ nst217,g3 --No
ORr.'C" TW4-22 ( .. q . 7,.., Flow J(,R ... No
Meter q , t .. n 2 ~ • ~ .. No
1
119.,., q TW4-24 ,.,q ""' Flow II •. D '1-e No
Meter .2. ~ o <' q -1'-/. '4 (" 1IE No
O'it~1 TW4-25 t.q,::u Flow .~., '-No
Meter 1 ~ <' ~ 11 ~ ":I 3~ 'Tm No
l)q"' -:ti TW4-1 1n1,. LI~ Flow ,~ ~ ... No
Meter it -;J o :i. "17. -, ., No
nQ-'Hl TW4-2 qq '.l'-. Flow I/,, /} ~ No
Meter t:' 1 'll Sl ("Sf ~ ~ No
LJ q 2.1 TW4-11 ~a 1q Flow , ,;: /... ... No
Meter 114 r .. ~,. '1::, l!illli No
f1'12"1 TW4-21 YI-/. r .. f Flow ,c. n ~ No
Meter ~~ 7q1.. 1'-f. ~,r ... No
nqnn TW4-37 ✓-~ ""/) Flow t"'f lit. 'lac No
Meter !1-,,. .., -, ~ ~ ~-t;: ,.. No
'b.tl lltM TW4-39 "'"' 1 .. ,: Flow ,~_n '111111 No
Meter Jna.1.1a ~n -, ... No
lf>J() TW4-40 .,, nq Flow I« n ,_ No
Meter , , q r.. "1 .l 7 ~ ~ ..... No
t,qL(q TW4-41 ~q-~] Flow ,: /. ... No
Meter '-I ~ Sl ~ '4 .1 . ~ ~ ... No
Operational Problems {Please list well number):
Corrective Action(s) Taken (Please list well number):
• Depth is measured to the nearest 0.01 feet.
Weekly Inspection Form
Date Name &,.., 'ry'"'~/' 'fuacc:: &/t'.~,
System Operatio:,; (If no note
Time Well Depth* Comments anv problems/corrective actions)
l:.22~ MW-4 i« l f\ t. Flow 11. n .. No
._. Meter ~1 .. r1ql:'.:1 ~fl 1115 No
,nt,if6 MW-26 ..,,. 7~ Flow J ~ « .... No
Meter i , c;..,_ ~ 1/. 1 .. No
J'JO,-TW4-19 5f> oq Flow 1 c;". t.. .,_ No
L Meter ~ 4 t / '-11 r11./ 'fa No
, '.1 ~!1 TW4-4 v:1. ,er Flow JI.. :2 -w. No
Meter ~ '1 D ~,q "\ 1 .. ~ No
oq~s-TWN-2 -r-«,71 Flow '"-n -, llE No
Meter 2 , n :::i -,-, .. -, ✓• ... No
o,qi4 ~ TW4-22 l.4 q~ Flow ,< "( .. No
Meter cr11q~1.. t. .. No
tJq~-, TW4-24 r. 111 ·A-11,,( Flow u ... n .. No
Meter :, ~ 1 Ml q n -a., 'Iii,; No
oq,.n TW4-25 .t..4 ,. ,_ Flow t6' n -No
Meter , ~1.:1 n 'HJ -~7> -.s No
i '1 '.l«' TW4-1 ,n, 1< Flow I-:, ~ .. No
Meter "'/ 3 1 Dlf ~ , 1ml No
I ::J I '"1 TW4-2 qq ~,. Flow , ,_ (J .. No
Meter ~31./K 1. ~ :J .. No
J/1}2._ TW4-11 jiff 1/7 flow ,.., ~ ,.. No
Meter , l.f -r 1.. -:J , 1 ... No
oq,~ TW4-21 -u:. ~r-Flow ,~~IJ ... No
Meter "', ~ 7t'J '11. -r 2 .. No
-
oq~1 TW4-37 (,;(. I~ Flow IC (} ,_ No
Meter ~-,. If' t I',,,.,; c: 2 .. No
1oq,...., TW4-39 "1"\ 11. Flow I 'T ~ ,_ No
Meter 1tJ'Z71',.0t·,,:J, '-No
,2~n TW4-40 "1~ ~, Flow lfl.O .. No
Meter 1 1 "'n "2.1 "l -, n '!!a No
J2~.("""' TW4-41 ct.Cl!. 7ct-Flow /.. 0 ... No
Meter ... -i q :l. c-1 • ·1..<1 .. No
Operational Problems (Please list well number):
Corrective Action(s) Taken (Please list well number): -----------------
* Depth is measured to the nearest 0.01 feet.
Weekly Inspection Form
Date cc-5".-A-l Name D,-,11 G-:iymo~ :z;;.,trG fl.fl'.~
System Operatio~(clf no note
Time Well Depth~ Comments anv problems/corrective actions)
lf'J 1""7 MW-4 if~~, Flow· -·--4 D :l!l&..No
Meter •~ ,. t;., 11 ~ 1 Q ,;-.,_ No
oq"4q MW-26 '1'8, It; Flow ,~. ~ ... No
Meter 9 , t ... q J 7 , ,_ No
11 irn TW4-19 "11 ,.,.1 Flow 11 •. IJ .. No
Meter ~ t ~ 1 '\ q . 1 ~ • No
I 031 TW4-4 '1.l .. "'12 Flow ''A•n ,.. No
Meter 8'-11 O qcl. 7 ... No
0 QI l TWN-2 61 r.ca Flow 11.. 1 ..... No
Meter ~ , 1 IA , 1. ~ o ... No
l)q~:a_ TW4-22 ,.q ~, Flow I l. 0 .. No
Meter q '1 q ~ 1 q .:1 11115 No
0 q ~ {J TW4-24 r.'f _l"1 Flow 1 Ii n;, "la No
Meter J. :1 rl.l t 4-t. tiR ... No
:oc,or:-TW4-25 "7lL~I Flow ,.,. I)--... No
Meter , ,;-1.. q .:1 1 :1 ~ n .. No
In,_, t. TW4-1 IIJ~.2~ Flow l~-~ .. No
Meter 4 -a. , c;-t. ~ .2. ... No
/01 2 TW4-2 111),1..~ Flow l c(, /,. ,.. No
Meter~~~~~ 1. ::1 ,. No
Jl) 0' TW4-11 crQ Lin Flow I ir., /. ... No
Meter 1 4 71C'<". ':?~ .,_ No
0</.00 TW4-21 ~,. 1.n Flow Jf..O "-' No
Meter .,,\ ~ 1 ,;-~ t. r_r .. .. No
nq-,,1 TW4-37 l.~ q2 Flow J'Sf D .. No
Meter ~ -.. c..,"' fl 1> fJl .. No
nq 1.4'< TW4-39 ~.., '"( ~ Flow , .;t fl .... No
Meter , (lea 'iZ 4 2 ~ . 7 .... No
1/l'-//'J TW4-40 ..,~ C'I~ Flow I.Y.. /1 ~ No
Meter , .:1 " '1. , .., q . "1 -:t ... No
ID~ t; TW4-41 s,q. tt:'I Flow t .. 0 "111118 No
Meter '-'-:t<llq ::1,. c;-~ 9K No
Operational Problems (Please list well number):
Corrective Action(s) Taken (Please list well number):
* Depth is measured to the nearest 0.01 feet.
Weekly ln_spection Form
Date Name Dwz 6-hanar< , -r,:;:aac: ,¼{(,±
, / System Operatina1 (If no not
Time Well Depth* Comments anv oroblems/correc1ive actions)
tJ'IDI MW-4 9:7 It.. Flow o/n ... No
Meter ~tot. L/.11 n. I-/~ ... No
Off l_ 1 MW-26 '7 'i . /JI' C. Flow 1 ~. {} ,__ No
Meter :s , ~ ~ 1 t::', "1 Ta No
fl) 30 TW4-19 ,~ I 0 Flow 1 t.. 0 ,_ No
Meter t CJ·t,, g 1-; .-r'1 .. No
net IR TW4-4 q 5". 9 2-Flow I (,. (J 1ta1··'No
Meter ~LJ ,~'11 '-I ... No -TWN-2 $1,, (. 0 Flow -... No 07"1~ I '"L ,;:
Meter -2 1..,_:J.."I /. 73 .... No
09il0 TW4-22 lj( ~ 5"'8" Flow 16,n .. No
Meter Cf-~ l t , n -,. ... No
o-r~-r TW4-24 /,.tl ~; Flow ,<.o ._. No
Meter :i 2 , "1 1 1 , ,,_ /.. ,,_ No
01J.f0 TW4-25 7/. t:tl Flow ,~ (J 11!1-No
Meter , <-r "1 q 7 q o ~ ~ No
nqol, TW4-1 ,01 12 Flow f":i,. n ~ No
Meter ., -; '1 , ,;--'1 1 ... No
f)S{l;'~ TW4-2 q~ (;"q Flow I/,. 0 ... No
Meter 1; ~ , • ....,,:~,. -No
~
n ~ ~ <" TW4-11 ~~ n~ Flow I,;',!.( ~ No
Meter , c.iti!., 2 .f).f? ,. No
,,,n~ TW4-21 '11... ( z:;-Flow Ju tJ ~No
Meter ?,~qg~17q,..1~ :Ills No
n~, t .. TW4-37 ,"'/, ~~ Flow J «. •. /) .. No
Meter ~ 7, ,; 7 7 'I 2 , 8 ,_ No
/Hf~~ TW4-39 76-/ f,. °' Flow J ~ 1) .. No
Meter ,n.q, 711 1,. ,_ No
/)Q "2.,~ TW4-40 ""1 '-I. / ~ Flow 19. n -. No
Meter 1 .2 I? ,;~~ 1 ~q lil8-No
oq13 TW4-41 9, ~ q c::'" Flow /. /1 .. No
Meter .. , ,., n -, ~ 1,, ,:: o 1JE No
Operational Problems (Please list well number):
Corrective Action(s) Taken (Please list well number):
* Depth is measured to the nearest 0.01 feet.
Date
Weekly Inspection Form
Name V,,.. +0 ) :Z:W.rr 11,,((,if.
System Operational {If no note
Time Well Depth* Comments anv problems/corrective actions)
nct~n MW-4 ~ 1.r:;"'(" Flow If. 11 ~ No
Meter ~ t. 11 14 1 o o --No
Qq1~ MW-26 ~t:'. i (. Flow I I. I'} ... No
Meter ~ 1n~ ~/. I":. lllt; No
II '-t n TW4-19 "T'l.1q Flow It,, fJ ,_ No
Meter 7 o r-q -2 1. lo -No
nQ1..4--, TW4-4 --rt., 11. Flow If,.. 0 .... No
Meter ~"~' n'I -r ..... No
t?'A I I TWN-2 Ii(~ IC:-Flow I I;. fi .... No
Meter .:i r ..., ,. 11~ O'lt ... No
0 S\ r:: .. , TW4-22 (.q ":\ t Flow ~ l. n .. No
Meter q c;r 1 c;i 41,. q ,_ No
(l~l(q TW4-24 ~q <J.-f Flow J~. ~ ... No
Meter._.J :i :i. :i ~ t:. 5'." r,, ; ... No
n-rl./K TW4-25 7 I Q. 2 Flow / "{. 'if .... No
Meter •1<<;,1,,LJ'if<.'17 ..... No
na :',"'T TW4-1 ID~. 'l..D Flow 11. R .. No
Meter Lf?. 1 r. 1.1 t 1-No
Ot:l'J.'-1 TW4-2 I 07 17 Flow I;-:'~ .. No
Meter ~7,7;,._q2.1 .. No
nq ,~ TW4-11 lj( ,. i« Flow ,~.,. .. No
Meter , ..,q '-'"' n4' "Ills No
D71(,. TW4-21 ilA, 11 Flow JL.. 0 ~ No
Meter "2i'-4 n c;:, "I~ ~n .. No
O~t;q TW4-37 ft,/ I 1-{,q Flow I~ (') .._ No . Meter 1. ~ ,A I n '-'q q 1:11£. No
no,nt:' TW4-39 ""1H. ~0 Flow ,~ /) ~ No
Meter , n Q ?. n ,,, "?. "1 ,_ No
oq r;c;-TW4-40 '1~ 0?. Flow ,~.n .. No
Meter , 2 o q ~ '-I 1 2 n ... No
f)C/'"( 2 TW4-41 «q, '7~ Flow ('; tr,· 1lllg. No
Meter "4 c r<71-f. 'f'i '11115 No
Operational Problems (Please list well number):
Corrective Action(s) Taken (Please list well number):
* Depth is measured to the nearest 0.01 feet.
Weekly Inspection Form
Date Name Dua G:--!7rna'.> y.; «c /:ta I 1. ·7,,
System Opera ional {If no note
Time Well Depth* Comments anv problems/corrective actions)
oqr:~ MW-4 ~"' "1'"\ Flow ~D ---No
Meter ~ t. 1 <;U~ ~ L-1 . "l. q 1111 No
O'f a.t.. MW-26 ~Sf '.a. Flow ,~ {) ... No
Meter if 2 ::ur 7 ~L ~ ~ No
104.f~ TW4-19 -rodo Flow Jfo n ... No
Meter 7, ,.,q(J, ff 1, 'fag No
{(JI~ TW4-4 ff¥. J7 Flow I~/,. ... No
Meter ~.., '2-, ~,. q ... No
0S01 TWN-2 ~S''.!G, Flow II. n ~ No
Meter 2 , r. LJ "I IJ 3 '1 'Ill No
()'lnl~ TW4-22 ( .. l ;:i,.q Flow I la IJ Ille No
Meter qQ 4<41.J _.~ 'las No
O'il l TW4-24 t.1 r.1 Flow II. n .... No
Meter ~ "J. 1. r,. L/ I.(~ • q ~ ,.._ No
01~< TW4-25 '71.~:.l Flow I t.4 (') .. No
Meter / S"q qq sit,.~, .. No
llltJI. TW4-1 ,n..,, ..,r; Flow I 1 ~ ,.._ No
Meter 4 ~ -a, ~ ~ :2 n.. .... No
oq,., ,,_ TW4-2 /11. '-{/. Flow Jt..:1 .... No
Meter ,;-~ ~ n -,, 1 •• IA ... No
oqa-tn TW4-11 ~q .,~ Flow ,1. n -.. No
Meter , r; /J 3 '3. "ii 7 ,.,_ No o,-z., TW4-21 7~ ,:;;t) Flow J f,. D ... No
Meter ~11 11 1,.. ~ ~ t: I) .. No
~qll TW4-37 ~ l, L.\t) Flow .~ 0 .. No
Meter 2.., t. 'f :1 n ~. ~ 'ta No
nq,q TW4-39 ., ~ ~, Flow I 'if 0 .... No
Meter I nq t;' .2 ~~ ~ ,._ No
J()!Jt'. TW4-40 '"1"1 ,'1< Flow I~ {) .. No
Meter , ~ 1 7-J '1 1 , -, '911; No
JO L~ TW4-41 Cl.Cl! .1:2 Flow· ,; 9;' ""Ille No ..
Meter-'-I '-I,~..., ;"l. ~q ,._.No
Operational Problems (Please list ~ell number):
Corrective Action(s) Taken (Please list well numb~r):
• Depth is measured to the nearest 0.01 feet.
TabD
Kriged Current Quarter Groundwater Contour Map, Details Map, and Depth to Water Summary
Name: Tanner Holliday, Deen Lyman, Garrin Palmer
June 26 -June 27, 2023
Depth to Depth to Depth to Water
Date Time Well Water (ft.) Date Time Well Water (ft.) Date Time Well (ft.)
6/27/2023 1028 MW-01 65_03 6/26/2023 953 MW-04 84.73 6/27/2023 930 PIEZ-01 67.61
6/27/2023 1005 MW-02 109.42 6/26/2023 1006 TW4-0I 104 75 6/27/2023 937 PIEZ-02 46 89
6/27/2023 1339 MW-03A 84,08 6/26/2023 946 TW4-02 112.46 6/27/2023 945 PIEZ-03A 54 55
6/27/2023 1040 MW-05 107.61 6/26/2023 1205 TW4-03 65.79 6/27/2023 I 130 PIEZ-04 67 27
6/27/2023 1231 MW-II 85 ,02 6/26/2023 1018 TW4-04 84,17 6/27/2023 1136 PIEZ-05 65 97
6/27/2023 1045 MW-12 109.26 6/26/2023 1155 TW4-05 73.31 6/27/2023 1210 TWN-01 70.16
6/27/2023 1410 MW-14 102.00 6/26/2023 1345 TW4-06 80.35 6/27/2023 1150 TWN-02 59 31
6/27/2023 1413 MW-15 105 42 6/26/2023 1210 TW4-07 82.70 6/27/2023 1145 TWN-03 44.20
6/27/2023 1330 MW-17 7208 6/26/2023 1214 TW4-08 85.27 6/27/2023 949 TWN-04 63 20
6/27/2023 1453 MW-18 74.25 6/26/2023 1150 TW4-09 71.28 6/27/2023 1250 TWN-06 81.04
6/27/2023 1445 MW-19 66,66 6/26/2023 1155 TW4-I0 70.70 6/27/2023 1255 TWN-07 80.41
6/27/2023 725 MW-20 88,.05 6/26/2023 940 TW4-II 89.75 6/27/2023 1315 TWN-14 59 37
6/27/2023 715 MW-22 66,37 6/26/2023 1225 TW4-12 56,70 6/27/2023 1320 TWN-16 48,00
6/27/2023 1350 MW-23 113 99 6/26/2023 1220 TW4-13 57.70 6/27/2023 1216 TWN-18 63 10
6/27/2023 944 MW-24A 109 73 6/26/2023 1140 TW4-14 77.34 6/27/2023 1326 TWN-19 54.52
6/27/2023 947 MW-24 108.57 6/26/2023 1055 TW4-16 74.85 6/27/2023 1237 TWN-20 78 13
6/27/2023 1237 MW-25 82.35 6/26/2023 1050 TW4-18 74.49 6/27/2023 1230 TWN-21 79.24
6/27/2023 926 MW-26 88,52 6/26/2023 1045 TW4-19 70,10 6/27/2023 735 DR-05 82 01
6/27/2023 905 MW-27 58.74 6/26/2023 737 TW4-21 78.30 6/27/2023 737 DR-06 93.93
6/27/2023 1433 MW-28 74,70 6/26/2023 906 TW4-22 68,29 6/27/2023 905 DR-07 91 71
6/27/2023 1428 MW-29 107.25 6/26/2023 1313 TW4-23 76.86 6/27/2023 746 DR-08 51.32
6/27/2023 1145 MW-30 75.48 6/26/2023 811 TW4-24 67.61 6/27/2023 752 DR-09 85.41
6/27/2023 1150 MW-31 69.70 6/26/2023 755 TW4-25 71.82 6/27/2023 739 DR-10 78.23
6/27/2023 1155 MW-32 82,85 6/26/2023 1317 TW4-26 75.33 6/27/2023 856 DR-11 97 93
6/27/2023 1402 MW-33 DRY 6/26/2023 1308 TW4-27 79.25 6/27/2023 850 DR-12 DRY
6/27/2023 1421 MW-34 107 35 6/26/2023 1243 TW4-28 50.26 6/27/2023 845 DR-13 69.80
6/27/2023 1354 MW-35 112.54 6/26/2023 1305 TW4-29 79.61 6/27/2023 757 DR-14 76.32
6/27/2023 1358 MW-36 I 10.56 6/26/2023 1251 TW4-30 75.31 6/27/2023 913 DR-15 92 51
6/27/2023 1417 MW-37 106.79 6/26/2023 1246 TW4-31 76.10 6/27/2023 803 DR-17 64.25
6/27/2023 1310 MW-38 70,20 6/26/2023 1240 TW4-32 57.31 6/27/2023 807 DR-19 63 16
6/27/2023 1318 MW-39 64,64 6/26/2023 1335 TW4-33 79.45 6/27/2023 822 DR-20 55 38
6/27/2023 1325 MW-40 79,96 6/26/2023 1325 TW4-34 77.85 6/27/2023 828 DR-21 103.51
6/27/2023 958 MW-41B 108.8 6/26/2023 1320 TW4-35 75.92 6/27/2023 812 DR-22 DRY
MW-26 = TW4-15 6/26/2023 1304 TW4-36 58,80 6/27/2023 838 DR-23 73,02
MW-32=TW4-17 6/26/2023 911 TW4-37 71.40 6/27/2023 816 DR-24 44 59
Comments: 6/26/2023 1200 TW4-38 60.90
6/26/2023 919 TW4-39 73.51
6/26/2023 1026 TW4-40 72.85
6/26/2023 1013 TW4-41 89.22
6/26/2023 1301 TW4-42 71.40
6/26/2023 1254 TW4-43 73.31
@
MW-41B
"9-5509
TW4-43
~5524
TWN-20
IJ5564
TW4-42
¢5523
estimated dry area
perched monitoring well installed April,
2023 showing elevation in feet amsl
temporary perched monitoring
well installed September, 2021
showing elevation in feet amsl
temporary perched nitrate monitoring
well installed April, 2021 showing
elevation in feet amsl
temporary perched monitoring well
installed April, 2019 showing
elevation in feet amsl
M;-~504 perched monitoring well showing
elevation In feet amsl
TW4-12 0 5568 temporary perched monitoring well
showing elevation in feet amsl
TWN-7 . . . A.5569 temporary perched nitrate monitoring
V well showing elevation in feet amsl
PIEZ-1 perched piezometer showing
'-5588 elevation in feet amsl
RUIN SPRING o 5380 seep or spring showing
elevation in feet amsl
\
' \ '
' ' -
DR-10 DR-11
5402 , 54BO
54ao
rt
1 mile
--...... -~•·1 p) ~· ~ -•
.....
ab,1rii u11Rd
TWN-15
-
,1b;ini or;0d
TWN-11
COR
'!WN-12' ~ .... ,.11,,~~
1'\ffl-1
·~t"
ss;j\
~6
;1\:anioned
TWN-09
5Sfl,
PIEJ-01
"V".,,,
MW-19
-
--
ss20
~-
S<too
~·· ,_ -~
-; . . ~
COR~L SPRINGS J;_,:;~8~-,-: I. ~ ~~
.
NOTES: MW-4, MW-26, TW4-1, TW4-2, TW4-4, TW4-11, TW4-19, TW4-21, TW4-37, TW4-39., TW4-40 and TW4-41 are chloroform pumping wells;
TW4-22, TW4-24, TW4-25 and TWN-2 are nitrate pumping wells; TW4-1 , TW4-2 and T1N4-11 water levels are below the base of the Burro Canyon Formation
HYDRO
GED
CHEM, INC.
KRIGED 2nd QUARTER, 2023 WATER LEVELS
WHITE MESA SITE
APPROVED DATE REFERENCE
H:/718000/aug23/WL/Uwl0623.srf
FIGU/i!s: u-1
~,
"" -#;, (!P ,
0 I
@
MW-41B
'¢,5509
estimated chloroform capture zone boundary
stream tubes resulting from pumping. (note:
combined capture shown for MW-4, TW4-1,
TW4-2, TW4-4, TW4-11, TW4-40 and TW4-41 ;
and for MW-26, TW4-19, TW4-21, TW4-25,
TW4-37 and TW4-39)
estimated nitrate capture zone boundary
stream tube resulting from pumping.
(note: combined capture shown for
TW4-22 and TW4-24)
estimated dry area
perched monitoring well installed April,
2023 showing elevation in feet amsl
TW4-43 temporary perched monitoring
~5524 well installed September, 2021
showing elevation in feet amsl
TWN-20
CJ 5564
TW4-42
¢5523
temporary perched nitrate monitoring
well installed April, 2021 showing
elevation in feet amsl
temporary perched monitoring well
installed April, 2019 showing
elevation in feet amsl
M:-;504 perched monitoring well showing
elevation in feet amsl
TW4-12 0 5568 temporary perched monitoring well
showing elevation in feet amsl
TWN-7 . . . A.5569 temporary perched nitrate monitoring
V well showing elevation in feet amsl
PIEZ-1 perched piezometer showing
~ 5588 elevation in feet amsl
RUIN SPRING 6 5380 seep or spring showing
elevation in feet amsl
DR-10 DR-11
Q 5,,rn;; 5,t8,,S
54ao
-~ •.: .,}w"":',J,"!·,0390 ............
•.
rt
1 mile
\
\ \ \ \
\ \
\
\
\
'
\
' ' .....
' .,!rnn&on(t;d
TWN-11
' ....
ati::llltll.,.d
11trn:ln ... ~,
TW!lf6
."l h;-i:1?,0/,;,Q
TWNfB
~~ Til/u.ie ' ,-
/w,.. I
'•\a.nio,,cd
TWN-09
"li l
PIEJ-01
-~ /
lo!W-19
~--'."---'
-
-
::-,. ,. ,, . .f''"'-" ' .... ''""-
•""nt 'iWN-12'
C
~i
NOTES: MW-4, MW-26, TW4-1, TW4-2, TW4-4, TW4-11, TW4-19, TW4-21, TW4-37, TW4-39, TW4-40 and TW4-41 are chloroform pumping wells;
TW4-22, TW4-24, TW4-25 and TWN-2 are nitrate pumpln_g_ wells; TW4-1, TW4-2 and 1W4-11 water levels are below the base of the Burro Canyon Formation
HYDR□
GE□
CHEM, INC. APPROVED
KRIGED 2nd QUARTER, 2023 WATER LEVELS
AND ESTIMATED CAPTURE ZONES
WHITE MESA SITE
DATE REFERENCE
H:/718000/aug23/WL/Uwl0623cz2.srf
FIGURE
D-2
MW-31
e 5547
estimated chloroform capture zone boundary c?:; -stream tubes resultlng from pumping, (note:
tf' ~ c.ombined caplure shown for MW-4, TW4-1 ,
TW4-2, TW4-4, TW4-11, TW4-40 and TW4-41 ; 0 I and for MW-26, TW4-19, TW4-21 , TW4-25,
TW4-43
~5524
TW4-42
¢ 5523
MW-25
.5530
TW4-7
0 5538
PtEZ-2
'-5582
TW4-37 and TW4-39)
estimated nitrate capture zone boundary
stream tube resulting from pumping_
(note: combined capture shown for
TW4-22 and TW4-24)
temporary perched monitoring well
installed September, 2021 showing
elevation in feet amsl
temporary perched monitoring well
installed April, 2019 showing
elevation in feet amsl
perched monitoring well showing
elevation in feet ams\
temporary perched monitoring well
showing elevation in feet amsl
perched piezometer showing
elevation in feet ams\
':)<::J'o~
5560
55,.5
5555
---' ~
~ri,-<-.,
... ~.J
5540
_ . ., ~,::-5535 -._ --·r• . 1 -toss2s ~+33-.. ;. · ----ss32.s
_ ~-s~~, ,811 "g" . ' ~SJo
' ·· • ___ ~ "~""'!,~1vv_g-10 _ :_ -~7. S
~ '6. '} ''S ,, -·<,
t
NOTES: MW-4, MW-26, TW4-1, TW4-2, TW4-4, TW4-11, TW4-19, TW4-21, TW4-37, TW4-39, TW4-40 and TW4-41 are chloroform pumping wells;
TW4-22, TW4-24, TW4-25 and TWN-2 are nitrate pumping wells; TW4-1, TW4-2 and TW4-11 water levels are below the base of the Burro Canyon Formation
HYDR□
GED
CHEM, INC. APPROVED
KRIGED 2nd QUARTER, 2023 WATER LEVELS
AND ESTIMATED CAPTURE ZONES
WHITE MESA SITE
detail ma
DATE REFERENCE
H:/718000/aug23/WL/Uw0623cz.srf
FIGURE
D-3
TabE
Kriged Previous Quarter Groundwater Contour Map
@
TW4-43
~5524
TWN-20
[]5564
TW4-42
9 5524
estimated dry area
temporary perched monitoring
well installed September, 2021
showing elevation in feet amsl
temporary perched nitrate monitoring
well installed April, 2021 showing
elevation in feet amsl
temporary perched monitoring well
installed April, 2019 showing
elevation in feet amsl
MW-38 perched monitoring well
-<;-5463 installed February, 2018 showing
elevation in feet amsl
MW-S h d ·1 . II h . • 5504 perc e morn onng we s owing
elevation tn feet amsl
TW4-12 0 5568 temporary perched monitoring well
showing elevation in feet amsl
TWN-7 . . . A.5569 temporary perched nitrate morntonng
V well showing elevation in feet amsl
PIEZ-1 perched piezometer showing
'-5588 elevation in feet amsl
RUIN SPRING o 5380 seep or spring showing
elevation in feet amsl
\
' ' ... \.
' .... -s~
TWN,#6
"'™'3"'" 1WN/lt
/ ...
DR-10 DR-11 . .
5-!32 5~~8
s1ao
l¢J
1 mile ,..:
5.$ •
PIE.7/01
~-~~/
fllW-19
e
:ihnndoti'.ld· () TWN-11
...
-
-
co
~•'-<I ~12 51Jl,·
5525
5s20
5510
ssoo
NOTES: MW-4, MW-26, TW4-1, TW4-2, TW4-4, TW4-11, TW4-19, TW4-21, TW4-37, TW4-39, TW4-40 and TW4-41 are chloroform pumping wells;
TW4-2.2, TW4-24, TW4-25 and TWN-2 are nitrate pumping wells; TW4-11 water level is below the base of the Burro Canyon FormaUon
HYDRO
GE□
CHEM, INC.
KRIGED 1st QUARTER, 2023 WATER LEVELS
WHITE MESA SITE
!APPROVED DATE REFERENCE
H:/718000/may23/WL/Uwl0323.srf
FIGURE E-1
TabF
Depths to Groundwater and Elevations and Hydrographs of Groundwater Elevations over Time for
Chloroform Monitoring Wells
Water Levels and Data over Time
White Mesa Mill -Well MW 4
Total or
Measuring Measured Total
Water Land Point Date Of Depth to Depth to Total ' Elevation Surface Elevation Length Of Monitoring Water Water Depth Of
(WL) (LSD) (MP) Riser (L) (blw.MP) (blw.LSD) Well
5,620.77 5,622.33 1.56 123.6
5,527.63 09/25/79 94.70 93.14
5,527.63 10/10/79 94.70 93.14
5,528.43 01/10/80 93.90 92.34
5,529.93 03/20/80 92.40 90.84
5,528.03 06/17/80 94.30 92.74
5,528.03 09/15/80 94.30 92.74
5,527.93 10/08/80 94.40 92.84
5,527.93 02/12/81 94.40 92.84 ;
5,525.93 09/01/84 96.40 94.84
5,528.33 12/01/84 94.00 92.44
5,528.13 02/01/85 94.20 92.64
5,528.33 06/01/85 94.00 92.44
5,528.93 09/01/85 93.40 91.84
5,528.93 10/01/85 93.40 91.84
5,528.93 11/01/85 93.40 91.84
5,528.83 12/01/85 93.50 91.94
5,512.33 03/01/86 110.00 108.44
5,528.91 06/19/86 93.42 91.86
5,528.83 09/01/86 93.50 91.94
5,529.16 12/01/86 93.17 91.61
5,526.66 02/20/87 95.67 94.11
5,529.16 04/28/87 93.17 91.61
5,529.08 08/14/87 93.25 91.69
5,529.00 11/20/87 93.33 91.77
5,528.75 01/26/88 93.58 92.02
5,528.91 06/01/88 93.42 91.86
5,528.25 08/23/88 94.08 92.52
5,529.00 11/02/88 93.33 91.77
5,528.33 03/09/89 94.00 92.44
5,529.10 06/21/89 93.23 91.67
5,529.06 09/01/89 93.27 91.71
5,529.21 11/15/89 93.12 91.56
5,529.22 02/16/90 93.11 91.55
5,529.43 05/08/90 92.90 91.34
5,529.40 08/07/90 92.93 91.37
5,529.53 11/13/90 92.80 91.24
5,529.86 02/27/91 92.47 90.91
5,529.91 05/21/91 92.42 90.86
5,529.77 08/27/91 92.56 91.00
5,529.79 12/03/91 92.54 90.98
5,530.13 03/17/92 92.20 90.64
5,529.85 06/11/92 92.48 90.92
5,529.90 09/13/92 92.43 90.87
Water Levels and Data over Time
White Mesa Mill -Well MW 4
Total or
Measuring Measured Total
Water Land Point Date Of Depth to Depth to Total
Elevation Surface Elevation Length Of Monitoring Water Water Depth Of
(WL) (LSD) (MP) Riser (L) (blw.MP) (blw.LSD) Well
5,620.77 5,622.33 1.56 123.6
5,529.92 12/09/92 92.41 90.85
5,530.25 03/24/93 92.08 90.52
5,530.20 06/08/93 92.13 90.57
5,530.19 09/22/93 92.14 90.58
5,529.75 12/14/93 92.58 91.02
5,530.98 03/24/94 91.35 89.79
5,531.35 06/15/94 90.98 89.42
5,531.62 08/18/94 90.71 89.15
5,532.58 12/13/94 89.75 88.19
5,533.42 03/16/95 88.91 87.35
5,534.70 06/27/95 87.63 86.07
5,535.44 09/20/95 86.89 85.33
5,537.16 12/11/95 85.17 83.61
5,538.37 03/28/96 83.96 82.40
5,539.10 06/07/96 83.23 81.67
5,539.13 09/16/96 83.20 81.64
5,542.29 03/20/97 80.04 78.48
5,551.58 04/07/99 70.75 69.19
5,552.08 05/11/99 70.25 68.69
5,552.83 07/06/99 69.50 67.94
5,553.47 09/28/99 68.86 67.30
5,554.63 01/03/00 67.70 66.14
5,555.13 04/04/00 67.20 65.64
5,555.73 05/02/00 66.60 65.04
5,556.03 05/11/00 66.30 64.74
5,555.73 05/15/00 66.60 65.04
5,555.98 05/25/00 66.35 64.79
5,556.05 06/09/00 66.28 64.72
5,556.18 06/16/00 66.15 64.59
5,556.05 06/26/00 66.28 64.72
5,556.15 07/06/00 66.18 64.62
5,556.18 07/13/00 66.15 64.59
5,556.17 07/18/00 66.16 64.60
5,556.26 07/25/00 66.07 64.51
5,556.35 08/02/00 65.98 64.42
5,556.38 08/09/00 65.95 64.39
5,556.39 08/15/00 65.94 64.38
5,556.57 08/31/00 65.76 64.20
5,556.68 09/08/00 65.65 64.09
5,556.73 09/13/00 65.60 64.04
5,556.82 09/20/00 65.51 63.95
5,556.84 09/29/00 65.49 63.93
5,556.81 10/05/00 65.52 63.96
Water Levels and Data over Time
White Mesa Mill -Well MW 4
Total or
Measuring Measured Total
Water Land Point Date Of Depth to Depth to Total
Elevation Surface Elevation Length Of Monitoring Water Water Depth Of
(WL) (LSD) (MP) Riser (L) (blw.MP) (blw.LSD) Well
5,620.77 5,622.33 1.56 123.6
5,556.89 10/12/00 65.44 63.88
5,556.98 10/19/00 65.35 63.79
5,557.01 10/23/00 65.32 63.76
5,557.14 11/09/00 65.19 63.63
5,557.17 11/14/00 65.16 63.60
5,556.95 11/21/00 65.38 63.82
5,557.08 11/30/00 65.25 63.69
5,557.55 12/07/00 64.78 63.22
5,557.66 01/14/01 64.67 63.11
5,557.78 02/09/01 64.55 62.99
5,558.28 03/29/01 64.05 62.49
5,558.23 04/30/01 64.10 62.54
5,558.31 05/31/01 64.02 62.46
5,558.49 06/22/01 63.84 62.28
5,558.66 07/10/01 63.67 62.11
5,559.01 08/20/01 63.32 61.76
5,559.24 09/19/01 63.09 61.53
5,559.26 10/02/01 63.07 61.51
5,559.27 11/08/01 63.06 61.50
5,559.77 12/03/01 62.56 61.00
5,559.78 01/03/02 62.55 60.99
5,559.96 02/06/02 62.37 60.81
5,560.16 03/26/02 62.17 60.61
5,560.28 04/09/02 62.05 60.49
5,560.76 05/23/02 61.57 60.01
5,560.58 06/05/02 61.75 60.19
5,560.43 07/08/02 61.90 60.34
5,560.44 08/23/02 61.89 60.33
5,560.71 09/11/02 61.62 60.06
5,560.89 10/23/02 61.44 59.88
5,557.86 11/22/02 64.47 62.91
5,561.10 12/03/02 61.23 59.67
5,561.39 01/09/03 60.94 59.38
5,561.41 02/12/03 60.92 59.36
5,561.93 03/26/03 60.40 58.84
5,561.85 04/02/03 60.48 58.92
5,536.62 05/01/03 85.71 84.15
5,528.56 06/09/03 93.77 92.21
5,535.28 07/07/03 87.05 85.49
5,534.44 08/04/03 87.89 86.33
5,537.10 09/11/03 85.23 83.67
5,539.96 10/02/03 82.37 80.81
5,535.91 11/07/03 86.42 84.86
Water Levels and Data over Time
White Mesa Mill -Well MW 4
Total or
Measuring Measured Total
Water Land Point Date Of Depth to Depth to Total
Elevation Surface Elevation Length Of Monitoring Water Water Depth Of
(WL) (LSD) (MP) Riser (L) {blw.MP) (blw.LSD) Well
5,620.77 5,622.33 1.56 123.6
5,550.70 12/03/03 71.63 70.07
5,557.58 01/15/04 64.75 63.19
5,558.80 02/10/04 63.53 61.97
5,560.08 03/28/04 62.25 60.69
5,560.55 04/12/04 61.78 60.22
5,561.06 05/13/04 61.27 59.71
5,561.48 06/18/04 60.85 59.29
5,561.86 07/28/04 60.47 58.91
5,529.17 08/30/04 93.16 91.60
5,536.55 09/16/04 85.78 84.22
5,529.00 10/11/04 93.33 91.77
5,541.55 11/16/04 80.78 79.22
5,541.12 12/22/04 81.21 79.65
5,540.59 01/18/05 81.74 80.18
5,542.85 02/28/05 79.48 77.92
5,537.91 03/15/05 84.42 82.86
5,548.67 04/26/05 73.66 72.10
5,549.53 05/24/05 72.80 71.24
5,544.36 06/30/05 77.97 76.41
5,545.16 07/29/05 77.17 75.61
5,544.67 09/12/05 77.66 76.10
5,541.28 09/27/05 81.05 79.49
5,536.96 12/07/05 85.37 83.81
5,546.49 03/08/06 75.84 74.28
5,546.15 06/13/06 76.18 74.62
5,545.15 07/18/06 77.18 75.62
5,545.91 11/17/06 76.42 74.86
5,545.90 02/27/07 76.43 74.87
5,548.16 05/02/07 74.17 72.61
5,547.20 08/13/07 75.13 73.57
5,547.20 10/10/07 75.13 73.57
5,547.79 03/26/08 74.54 72.98
5,545.09 06/25/08 77.24 75.68
5,550.36 08/26/08 71.97 70.41
5,550.39 10/14/08 71.94 70.38
5,542.25 03/03/09 80.08 78.52
5,542.25 06/24/09 80.08 78.52
5,550.19 09/10/09 72.14 70.58
5,550.94 12/11/09 71.39 69.83
5,546.08 03/11/10 76.25 74.69
5,550.98 05/11/10 71.35 69.79
5,548.33 09/29/10 74.00 72.44
5,551.01 12/21/10 71.32 69.76
Water Levels and Data over Time
White Mesa Mill -Well MW 4
Total or
Measuring Measured Total
Water Land Point Date Of Depth to Depth to Total
Elevation Surface Elevation Length Of Monitoring Wafer Water Depth Of
(WL) (LSD) (MP) Riser (L) (blw.MP) (blw.LSD) Well
5,620.77 5,622.33 1.56 123.6
5,547.00 02/28/11 75.33 73.77
5,557.54 06/21/11 64.79 63.23
5,551.14 09/20/11 71.19 69.63
5,550.32 12/21/11 72.01 70.45
5,551.22 03/27/12 71.11 69.55
5,551.29 06/28/12 71.04 69.48
5,550.29 09/27/12 72.04 70.48
5,549.31 12/28/12 73.02 71.46
5,552.30 03/28/13 70.03 68.47
5,550.18 06/27/13 72.15 70.59
5,552.55 09/27/13 69.78 68.22
5,553.23 12/20/13 69.10 67.54
5,551.91 03/27/14 70.42 68.86
5,552.93 06/25/14 69.40 67.84
5,552.23 09/25/14 70.10 68.54
5,552.08 12/17/14 70.25 68.69
5,551.13 03/26/15 71.20 69.64
5,556.02 06/22/15 66.31 64.75
5,543.38 09/30/15 78.95 77.39
5,551.13 12/02/15 71.20 69.64
5,542.10 03/30/16 80.23 78.67
5,542.31 06/30/16 80.02 78.46
5,540.96 09/29/16 81.37 79.81
5,540.65 12/21/16 81.68 80.12
5,542.05 03/30/17 80.28 78.72
5,550.28 06/27/17 72.05 70.49
5,534.84 09/28/17 87.49 85.93
5,532.41 11/30/17 89.92 88.36
5,534.64 03/28/18 87.69 86.13
5,539.53 06/22/18 82.80 81.24
5,537.04 09/24/18 85.29 83.73
5,537.82 12/17/18 84.51 82.95
5,536.10 03/25/19 86.23 84.67
5,536.20 06/24/19 86.13 84.57
5,538.67 08/12/19 83.66 82.10
5,533.67 11/18/19 88.66 87.10
5,525.79 02/10/20 96.54 94.98
5,533.63 05/04/20 88.70 87.14
5,536.94 09/21/20 85.39 83.83
5,535.31 12/28/20 87.02 85.46
5,539.70 03/11/21 82.63 81.07
5,540.44 06/24/21 81.89 80.33
5,540.65 08/13/21 81.68 80.12
Water Levels and Data over Time
White Mesa Mill -Well MW 4
Total or
Measuring Measured Total
Water Land Point Date Of Depth to Depth to Total
Elevation Surface Elevation Length Of Monitoring Water Water Depth Of
(WL) (LSD) (MP) Riser (L) (blw.MP) (blw.LSD) Well
5,620.77 5,622.33 1.56 123.6
5,539.10 12/30/21 83.23 81.67
5,539.70 02/10/22 82.63 81.07
5,540.38 06/28/22 81.95 80.39
5,540.67 08/15/22 81.66 80.10
5,539.98 11/17/22 82.35 80.79
5,539.65 03/24/23 82.68 81.12
5,537.60 06/26/23 84.73 83.17
Depth Below Measuring Point (ft.) -N 0 00 0\ _.,. N 0 0 0 0 0 0 0
L 09/25/79
02/06/81
06/21/82
11/03/83
03/17/85
07/30/86
12/12/87
04/25/89
09/07/90
01/20/92
06/03/93 ~ ~ 10/16/94 ~
02/28/96 ~
-07/12/97 ..... ~ .,
-11/24/98 c ~
-04/07/00 "'C ..... =--08/20/01 0
-01/02/03 < ~ .,
05/16/04 ~ ...
-09/28/05 = ~
02/10/07 -~
06/24/08 a' -11/06/09 = "'C
03/21/11
_,
08/02/12
-12/15/13
04/29/15
09/10/16
01/23/18
06/07/19
10/19/20
03/03/22
07/16/23
11/27/24
04/11/26
Water Levels and Data over Time
White Mesa Mill -Well TW 4-1
Total or
Measuring Measured Total
Water Land Point Depth to Depth to Total
Elevation Surface Elevation Length Of Date Of Water Water Depth Of
(WL) (LSD) (MP) Riser (L) Monitoring (blw.MP) (blw.LSD) Well
z 5,620.77 5,618.58 1.02 111.30
5,537.23 11/08/99 81.35 80.33
5,537.38 11/09/99 81.20 80.18
5,537.48 01/02/00 81.10 80.08
5,537.48 01/10/00 81.10 80.08
5,537.23 01/17/00 81.35 80.33
5,537.28 01/24/00 81.30 80.28
5,537.28 02/01/00 81.30 80.28
5,537.18 02/07/00 81.40 80.38
5,537.48 02/14/00 81.10 80.08
5,537.48 02/23/00 81.10 80.08
5,537.58 03/01 /00 81.00 79.98
5,537.68 03/08/00 80.90 79.88
5,537.98 03/15/00 80.60 79.58
5,537.68 03/20/00 80.90 79.88
5,537.68 03/29/00 80.90 79.88
5,537.43 04/04/00 81.15 80.13
5,537.18 04/13/00 81.40 80.38
5,537.48 04/21/00 81.10 80.08
5,537.68 04/28/00 80.90 79.88
5,537.58 05/01/00 81.00 79.98
5,537.88 05/11 /00 80.70 79.68
5,537.58 05/15/00 81.00 79.98
5,537.88 05/25/00 80.70 79.68
5,537.88 06/09/00 80.70 79.68
5,537.90 06/16/00 80.68 79.66
5,537.88 06/26/00 80.70 79.68
5,538.10 07/06/00 80.48 79.46
5,538.04 07/13/00 80.54 79.52
5,538.16 07/1 8/00 80.42 79.40
5,538.42 07/27/00 80.16 79.14
5,538.56 08/02/00 80.02 79.00
5,538.68 08/09/00 79.90 78.88
5,538.66 08/15/00 79.92 78.90
5,538.33 08/31 /00 80.25 79.23
5,539.18 09/01/00 79.40 78.38
5,539.12 09/08/00 79.46 78.44
5,539.34 09/13/00 79.24 78.22
5,539.50 09/20/00 79.08 78.06
5,539.69 10/05/00 78.89 77.87
5,540.33 11/09/00 78.25 77.23
5,540.74 12/06/00 77.84 76.82
5,542.39 01/14/01 76.19 75.17
5,543.69 02/02/01 74.89 73.87
Water Levels and Data over Time
White Mesa Mill -Well TW 4-1
Total or
Measuring Measured Total
Water Land Point Depth to Depth to Total
Elevation Surface Elevation Length Of Date Of Water Water Depth Of
(WL) (LSD) (MP) Riser (L) Monitoring (blw.MP) (blw.LSD) Well
z 5,620.77 5,618.58 1.02 111.30
5,544.96 03/29/01 73 .62 72.60
5,545.45 04/30/01 73 .13 72.11
5,545.89 05/31/01 72.69 71.67
5,546.19 06/21/01 72.39 71.37
5,546.50 07/10/01 72.08 71.06
5,547.18 08/20/01 71.40 70.38
5,547.59 09/19/01 70.99 69.97
5,547.84 10/02/01 70.74 69.72
5,548.12 11/08/01 70.46 69.44
5,548.65 12/03/01 69.93 68.91
5,548.87 01 /03/02 69.71 68.69
5,549.37 02/06/02 69.21 68.19
5,550.00 03/26/02 68.58 67.56
5,550.22 04/09/02 68.36 67.34
5,550.81 05/23/02 67.77 66.75
5,550.79 06/05/02 67.79 66.77
5,551.08 07/08/02 67.50 66.48
5,551.54 08/23/02 67.04 66.02
5,551.79 09/11 /02 66.79 65.77
5,552.19 10/23/02 66.39 65.37
5,552.27 11/22/02 66.31 65.29
5,552.48 12/03/02 66.10 65.08
5,552.74 01/09/03 65 .84 64.82
5,552.92 02/12/03 65.66 64.64
5,553.40 03/26/03 65.18 64.16
5,553.48 04/02/03 65.10 64.08
5,552.32 05/01/03 66.26 65.24
5,550.53 06/09/03 68.05 67.03
5,550.09 07/07/03 68.49 67.47
5,549.64 08/04/03 68.94 67.92
5,549.31 09/11/03 69.27 68.25
5,549.58 10/02/03 69.00 67.98
5,549.50 11/07/03 69.08 68.06
5,550.07 12/03/03 68.51 67.49
5,551.86 01/15/04 66.72 65.70
5,552.57 02/10/04 66.01 64.99
5,553.63 03/28/04 64.95 63.93
5,554.04 04/12/04 64.54 63.52
5,554.60 05/13/04 63.98 62.96
5,556.28 06/1 8/04 62.30 61.28
5,556.61 07/28/04 61.97 60.95
5,554.21 08/30/04 64.37 63.35
5,553.49 09/16/04 65.09 64.07
Water Levels and Data over Time
White Mesa Mill -Well TW 4-1
Total or
Measuring Measured Total
Water Land Point Depth to Depth to Total
Elevation Surface Elevation Length Of Date Of Water Water Depth Of
(WL) (LSD) (MP) Riser (L) Monitoring (blw.MP) (blw.LSD) Well
z 5,620.77 5,618.58 1.02 111.30
5,552.53 10/11/04 66.05 65.03
5,552.42 11/16/04 66.16 65.14
5,552.46 12/22/04 66.12 65.10
5,552.07 01/18/05 66.51 65.49
5,552.21 02/28/05 66.37 65.35
5,552.26 03/15/05 66.32 65.30
5,552.30 04/26/05 66.28 65.26
5,552.25 05/24/05 66.33 65.31
5,552.22 06/30/05 66.36 65.34
5,552.15 07/29/05 66.43 65.41
5,552.47 09/12/05 66.11 65.09
5,552.50 12/07/05 66.08 65.06
5,552.96 03/08/06 65.62 64.60
5,553.23 06/14/06 65.35 64.33
5,557.20 07/18/06 61.38 60.36
5,553.32 11/07 /06 65.26 64.24
5,554.35 02/27/07 64.23 63.21
5,554.07 05/02/07 64.51 63.49
5,554.07 08/14/07 64.51 63.49
5,553.88 10/10/07 64.70 63.68
5,555.73 03/26/08 62.85 61.83
5,556.60 06/24/08 61.98 60.96
5,556.83 08/26/08 61.75 60.73
5,556.87 10/14/08 61.71-60.69
5,556.90 03/10/09 61.68 60.66
5,556.91 06/24/09 61.67 60.65
5,556.61 09/10/09 61.97 60.95
5,556.78 12/11/09 61.8 60.78
5,556.75 03/11/10 61.83 60.81
5,556.19 05/11/10 62.39 61.37
5,555.26 09/29/10 63.32 62.30
5,554.66 12/21/10 63.92 62.90
5,554.74 02/28/11 63.84 62.82
5,554.57 06/21/11 64.01 62.99
5,554.13 09/20/11 64.45 63.43
5,554.54 12/21/11 64.04 63.02
5,553.64 03/27/12 64.94 63.92
5,553.66 06/28/12 64.92 63.90
5,553.73 09/27/12 64.85 63.83
5,553.59 12/28/12 64.99 63.97
5,554.73 03/28/13 63.85 62.83
5,554.44 06/27/13 64.14 63.12
5,554.37 09/27/13 64.21 63.19
Water Levels and Data over Time
White Mesa Mill -Well TW 4-1
Total or
Measuring Measured Total
Water Land Point Depth to Depth to Total
Elevation Surface Elevation Length Of Date Of Water Water Depth Of
(WL) (LSD) (MP) Riser (L) Monitoring (blw.MP) (blw.LSD) Well
z 5,620.77 5,618.58 1.02 111.30
5,553.92 12/20/13 64.66 63.64
5,553.20 03/27/14 65.38 64.36
5,552.20 06/25/14 66.38 65.36
5,551.13 09/25/14 67.45 66.43
5,550.72 12/17/14 67.86 66.84
5,546.50 03/26/15 72.08 71.06
5,544.18 06/22/15 74.40 73.38
5,535.85 09/30/15 82.73 81.71
5,529.54 12/02/15 89.04 88.02
5,527.55 03/30/16 91.03 90.01
5,525.92 06/30/16 92.66 91.64
5,524.48 09/29/16 94.10 93.08
5,533.15 12/21/16 85.43 84.41
5,527.92 03/30/17 90.66 89.64
5,534.48 06/27/17 84.10 83.08
5,524.98 09/28/17 93.60 92.58
. 5,525.88 11/30/17 92.70 91.68
5,526.18 03/28/18 92.40 91.38
5,515.78 06/22/18 102.80 101.78
5,510.83 09/24/18 107.75 106.73
5,542.47 12/17/18 76.11 75.09
5,531.82 03/25/19 86.76 85.74
5,539.90 06/24/19 78.68 77.66
5,538.56 08/12/19 80.02 79.00
5,510.85 11/18/19 107.73 106.71
5,513.12 02/10/20 105.46 104.44
5,512.44 05/04/20 106.14 105.12
5,517.82 09/21/20 100.76 99.74
5,520.38 12/28/20 98.20 97.18
5,513.47 03/11/21 105.11 104.09
5,513.44 06/24/21 105.14 104.12
5,515.25 08/13/21 103.33 102.31
\ 5,513.03 12/30/21 105.55 104.53
5,513.17 02/10/22 105.41 104.39
5,513.35 06/28/22 105.23 104.21
5,518.60 08/15/22 99.98 98.96
5,517.52 11/17/22 101.06 100.04
5,516.08 03/24/23 102.50 101.48
5,513.83 06/26/23 104.75 103.73
/
-N 0 0
Depth Below Measuring Point (ft.) -0 0 \0 0 00 0 -J 0 0\ 0
V,
0
11/08/99
09/03/00
06/30/01
04/26/02
02/20/03
12/17/03
-10/12/04
08/08/05
06/04/06 ~
03/31/07 ~ ,I;:..
01/25/08 I .....
11/20/08 ~ ...... 09/16/09 ~ ""l
07/13/10 ~ ~
"C 05/09/11 ...... =-
03/04/12 0 -<
-12/29/12 ~ ""l
~
10/25/13 ...
= 08/21/14 ~ -06/17/15 ?
O"' -04/12/16 = "C
02/06/17 -
12/03/17
09/29/18
07/26/19
05/21/20
03/17/21
01/11/22
11/07/22
09/03/23
06/29/24
04/25/25
Water Levels and Data over Time
White Mesa Mill -Well TW 4-2
Total or
Measuring Measured Total
Water Land Point Depth to Depth to Total
Elevation Surface Elevation Length Of Date Of Water Water Depth Of
(z) (LSD) (MP) Riser (L) Monitoring (blw.MP) (blw.LSD) Well
5 623.10 5,624.72 1.62 120.900
5,548.57 11/08/99 76.15 74.53
5,548.57 11/09/99 76.15 74.53
5,548.32 01/02/00 76.40 74.78
5,548.52 01/10/00 76.20 74.58
5,548.32 01/17/00 76.40 74.78
5,548.72 01/24/00 76.00 74.38
5,548.62 02/01/00 76.10 74.48
5,548.62 02/07/00 76.10 74.48
5,549.02 02/14/00 75.70 74.08
5,549.12 02/23/00 75.60 73.98
5,549.22 03/01/00 75.50 73.88
5,549.32 03/08/00 75.40 73.78
5,549.22 03/15/00 75.50 73.88
5,549.92 03/20/00 74.80 73.18
5,549.72 03/29/00 75.00 73.38
5,549.42 04/04/00 75.30 73.68
5,549.52 04/13/00 75.20 73.58
5,549.72 04/21/00 75.00 73.38
5,549.82 04/28/00 74.90 73.28
5,549.82 05/01/00 74.90 73.28
5,550.12 05/11/00 74.60 72.98
5,549.82 05/15/00 74.90 73.28
5,550.12 05/25/00 74.60 72.98
5,550.12 06/09/00 74.60 72.98
5,550.22 06/16/00 74.50 72.88
5,550.07 06/26/00 74.65 73.03
5,550.17 07/06/00 74.55 72.93
5,550.17 07/13/00 74.55 72.93
5,550.18 07/18/00 74.54 72.92
5,550.33 07/27/00 74.39 72.77
5,550.38 08/02/00 74.34 72.72
5,550.40 08/09/00 74.32 72.70
5,550.42 08/15/00 74.30 72.68
5,550.54 08/31/00 74.18 72.56
5,550.87 09/08/00 73.85 72.23
5,550.97 09/13/00 73.75 72.13
5,551.04 09/20/00 73.68 72.06
5,545.83 10/05/00 78.89 77.27
5,546.47 11/09/00 78.25 76.63
5,546.88 12/06/00 77.84 76.22
5,552.18 01/26/01 72.54 70.92
5,552.20 02/02/01 72.52 70.90
5,551.10 03/29/01 73.62 72.00
Water Levels and Data over Time
White Mesa Mill -Well TW 4-2
Total or
Measuring Measured Total
Water Land Point Depth to Depth to Total
Elevation Surface Elevation Length Of Date Of Water Water Depth Of
(z) (LSD) (MP) Riser (L) Monitoring (blw.MP) (blw.LSD) Well
5,623.10 5,624.72 1.62 120.900
5,551.59 04/30/01 73.13 71.51
5,552.03 05/31/01 72.69 71.07
5,552.33 06/21/01 72.39 70.77
5,552.64 07/10/01 72.08 70.46
5,553.32 08/20/01 71.40 69.78
5,553.73 09/19/01 70.99 69.37
5,553.98 10/02/01 70.74 69.12
5,554.14 11/08/01 70.58 68.96
5,554.79 12/03/01 69.93 68.31
5,554.74 01/03/02 69.98 68.36
5,554.91 02/06/02 69.81 68 .19
5,555.15 03/26/02 69.57 67.95
5,555.39 04/09/02 69.33 67.71
5,555.73 05/23/02 68.99 67.37
5,555.79 06/05/02 68.93 67.31
5,555.91 07/08/02 68.81 67.19
5,556.04 08/23/02 68.68 67.06
5,556.25 09/11/02 68.47 66.85
5,556.72 10/23/02 68.00 66.38
5,556.42 11 /22/02 68.30 66.68
5,557.01 12/03/02 67.71 66.09
5,557.20 01/09/03 67.52 65.90
5,557.35 02/12/03 67.37 65.75
5,557.83 03/26/03 66.89 65.27
5,557.87 04/02/03 66.85 65.23
5,553.71 05/01/03 71.01 69.39
5,548.98 06/09/03 75.74 74.12
5,548.14 07/07/03 76.58 74.96
5,547.75 08/04/03 76.97 75.35
5,547.22 09/11/03 77.50 75.88
5,547.68 10/02/03 77.04 75.42
5,547.52 11/07/03 77.20 75.58
5,548.29 12/03/03 76.43 74.81
5,554.00 01/15/04 70.72 69.10
5,555.46 02/10/04 69.26 67.64
5,556.90 03/28/04 67.82 66.20
5,557.49 04/12/04 67.23 65.61
5,558.07 05/13/04 66.65 65.03
5,558.19 06/18/04 66.53 64.91
5,559.00 07/28/04 65.72 64.10
5,554.26 08/30/04 70.46 68.84
5,551.97 09/16/04 72.75 71.13
5,549.65 10/11/04 75.07 73.45
Water Levels and Data over Time
White Mesa Mill -Well TW 4-2
Total or
Measuring Measured Total
Water Land Point Depth to Depth to Total
Elevation Surface Elevation Length Of Date Of Water Water Depth Of
(z) (LSD) (MP) Riser (L) Monitoring (blw.MP) (blw.LSD) Well
5,623.IO 5,624.72 1.62 120.900
5,549.89 11/16/04 74.83 73.21
5,550.37 12/22/04 74.35 72.73
5,549.95 01/18/05 74.77 73.15
5,550.09 02/28/05 74.63 73.01
5,550.13 03/15/05 74.59 72.97
5,550.18 04/26/05 74.54 72.92
5,550.32 05/24/05 74.40 72.78
5,550.21 06/30/05 74.51 72.89
5,550.11 07/29/05 74.61 72.99
5,550.33 09/12/05 74.39 72.77
5,550.29 12/07/05 74.43 72.81
5,551.30 03/08/06 73.42 71.80
5,551.42 06/14/06 73.30 71.68
5,550.52 07/18/06 74.20 72.58
5,550.52 11/07/06 74.20 72.58
5,552.89 02/27/07 71.83 70.21
5,552.06 05/02/07 72.66 71.04
5,552.02 08/14/07 72.70 71.08
5,552.20 IO/l0/07 72.52 70.90
5,554.58 03/26/08 70.14 68.52
5,555.23 06/24/08 69.49 67.87
5,555.29 08/26/08 69.43 67.81
5,555.43 l0/14/08 69.29 67.67
5,555.73 03/10/09 68.99 67.37
5,556.25 06/24/09 68.47 66.85
5,555.94 09/10/09 68.78 67.16
5,556.53 12/11/09 68.19 66.57
5,557.87 03/11/IO 66.85 65.23
5,557.63 05/11/10 67.09 65.47
5,557.24 09/29/10 67.48 65.86
5,557.00 12/21/IO 67.72 66.10
5,557.61 02/28/11 67.11 65.49
5,557.58 06/21/11 67.14 65.52
5,557.46 09/20/11 67.26 65.64
5,557.84 12/21/11 66.88 65.26
5,557.86 03/27/12 66.86 65.24
5,557.87 06/28/12 66.85 65.23
5,557.46 09/27/12 67.26 65.64
5,557.82 12/28/12 66.90 65.28
5,559.39 03/28/13 65.33 63.71
5,559.21 06/27/13 65.51 63.89
5,559'.26 09/27/13 65.46 63.84
5,559.27 12/20/13 65.45 63.83
Water Levels and Data over Time
White Mesa Mill-Well TW4-2
Total or
Measuring Measured Total
Water Land Point Depth to Depth to Total
Elevation Surface Elevation Length Of Date Of Water Water Depth Of
(z) (LSD) (MP) Riser (L) Monitoring (blw.MP) (blw.LSD) Well
5,623 .10 5,624.72 1.62 120.900
5,558.92 03/27/14 65.80 64.18
5,557.99 06/25/14 66.73 65.11
5,557.09 09/25/14 67.63 66.01
5,557.07 12/17/14 67.65 66.03
5,549.93 03/26/15 74.79 73.17
5,551.30 06/22/15 73.42 71.80
5,547.12 09/30/15 77.60 75.98
5,538.34 12/02/15 86.38 84.76
5,542.22 03/30/16 82.50 80.88
5,538.31 06/30/16 86.41 84.79
5,536.70 09/29/16 88.02 86.40
5,540.40 12/21/16 84.32 82.70
5,536.61 03/30/17 88.11 86.49
5,547.16 06/27/17 77.56 75.94
5,522.65 09/28/17 102.07 100.45
5,532.64 11/30/17 92.08 90.46
5,506.94 03/28/18 117.78 116.16
5,521.60 06/22/18 103.12 101.50
5,510.01 09/24/18 114. 71 113.09
5,543.01 12/17/18 81.71 80.09
5,522.70 03/25/19 102.02 100.40
5,522.49 06/24/19 102.23 100.61
5,522.29 08/12/19 102.43 100.81
5,515.62 11/18/19 109.10 107.48
5,516.60 02/10/20 108.12 106.5
5,514.51 05/04/20 110.21 108.59
5,522.29 09/21/20 102.43 100.81
5,521.08 12/28/20 103.64 102.02
5,513.42 03/11 /21 111.30 109.68
5,513.51 06/24/21 111.21 109.59
5,526.62 08/13/21 98.10 96.48
5,514.01 12/30/21 110.71 109.09
5,513.52 02/10/22 111.20 109.58
5,514.54 06/28/22 110.18 108.56
5,566.52 08/15/22 58.20 56.58
5,525.09 11/17/22 99.63 98.01
5,523.61 03/24/23 101.11 99.49
5,512.26 06/26/23 112.46 110.84
---w N -0 0 0
Depth Below Measuring Point (ft.) -0 0 \,C) 0 00 0 -.J 0\ 0 0 Ul 0
11/08/99
09/03/00
06/30/01
.. 04/26/02
-02/20/03
-12/17/03
10/12/04
08/08/05
06/04/06 ~
~ 03/31/07 ~ ,I:..
01/25/08 I N
11/20/08 ~ ..... .. 09/16/09 ~ .,
07/13/10 ~ ~ "'CS 05/09/11 ..... =-
03/04/12 0 <
12/29/12 ~ .,
~
10/25/13 ...
= 08/21/14 ~ -06/17/15 ~
O" -04/12/16 = "'CS
02/06/17 --
12/03/17
09/29/18
07/26/19
05/21/20
03/17/21
01/11/22
11/07/22
09/03/23
06/29/24
04/25/25
Water Levels and Data over Time
White Mesa Mill -Well TW 4-3
Total or
Measuring Measured Total
Water Land Point Depth to Depth to
Elevation Surface Elevation Length Of Date Of Water Water
(z) (LSD) (MP) Riser (L) Monitoring (blw.MP) (blw.LSO) Total Depth Of Well
5,631.21 5,632.23 1.02 140.30
5,565.78 11/29/99 66.45 65.43
5,566.93 1/2/00 65 .30 64.28
5,567.03 1/10/00 65.20 64.18
5,566.83 1/17/00 65.40 64.38
5,567.13 1/24/00 65.10 64.08
5,567.33 2/1/00 64.90 63 .88
5,567.13 2/7/00 65.10 64.08
5,567.43 2/14/00 64.80 63 .78
5,567.63 2/23/00 64.60 63.58
5,567.73 3/1/00 64.50 63.48
5,567.83 3/8/00 64.40 63.38
5,567.70 3/15/00 64.53 63.51
5,568.03 3/20/00 64.20 63 .18
5,567.93 3/29/00 64.30 63 .28
5,567.63 4/4/00 64.60 63 .58
5,567.83 4/13/00 64.40 63 .38
5,568.03 4/21/00 64.20 63 .18
5,568.23 4/28/00 64.00 62.98
5,568.13 5/1/00 64.10 63.08
5,568.53 5/11/00 63.70 62.68
5,568.23 5/15/00 64.00 62.98
5,568.53 5/25/00 63.70 62.68
5,568.61 6/9/00 63.62 62.60
5,568.69 6/16/00 63.54 62.52
5,568.45 6/26/00 63.78 62.76
5,568.61 7/6/00 63.62 62.60
5,568.61 7/6/00 63.62 62.60
5,568.49 7/13/00 63.74 62.72
5,568.55 7 /18/00 63.68 62.66
5,568.65 7/27/00 63.58 62.56
5,568.73 8/2/00 63.50 62.48
5,568.77 8/9/00 63.46 62.44
5,568.76 8/16/00 63.47 62.45
5,568.95 8/31/00 63.28 62.26
5,568.49 9/8/00 63.74 62.72
5,568.67 9/13/00 63.56 62.54
5,568.96 9/20/00 63.27 62.25
5,568.93 10/5/00 63.30 62.28
5,569.34 11 /9/00 62.89 61.87
5,568.79 12/6/00 63.44 62.42
5,569.11 1/3/01 63 .12 62.10
5,569.75 2/9/01 62.48 61.46
5,570.34 3/28/01 61.89 60.87
Water Levels and Data over Time
White Mesa Mill -Well TW 4-3
Total or
Measuring Measured Total
Water Land Point Depth to Depth to
Elevation Surface Elevation Length Of Date Of Water Water
(z) (LSD) (MP) Riser (L) Monitoring (blw.MP) (blw.LSD) Total Depth Of Well
5,63 1.21 5,632.23 1.02 140.30
5,570.61 4/30/01 61.62 60.60
5,570.70 5/31/01 61.53 60.51
5,570.88 6/21/01 61.35 60.33
5,571.02 7/10/01 61.21 60.19
5,571.70 8/20/01 60.53 59.51
5,572.12 9/19/01 60.11 59.09
5,572.08 10/2/01 60.15 59.13
5,572.78 11/8/01 59.45 58.43
5,573.27 12/3/01 58.96 57.94
5,573.47 1/3/02 58.76 57.74
5,573.93 2/6/02 58.30 57.28
5,574.75 3/26/02 57.48 56.46
5,574.26 4/9/02 57.97 56.95
5,575.39 5/23/02 56.84 55.82
5,574.84 6/5/02 57.39 56.37
5,575.33 7/8/02 56.90 55.88
5,575.79 8/23/02 56.44 55.42
5,576.08 9/11/02 56.15 55.13
5,576.30 10/23/02 55.93 54.91
5,576.35 11/22/02 55.88 54.86
5,576.54 12/3/02 55.69 54.67
5,576.96 1/9/03 55.27 54.25
5,577.11 2/12/03 55.12 54.10
5,577.61 3/26/03 54.62 53.60
5,572.80 4/2/03 59.43 58.41
5,577.89 5/1/03 54.34 53.32
5,577.91 6/9/03 54.32 53.30
5,577.53 7/7/03 54.70 53.68
5,577.50 8/4/03 54.73 53.71
5,577.71 9/11/03 54.52 53.50
5,577.31 10/2/03 54.92 53.90
5,577.33 11/7/03 54.90 53.88
5,577.34 12/3/03 54.89 53.87
5,578.24 1/15/04 53.99 52.97
5,578.38 2/10/04 53.85 52.83
5,578.69 3/28/04 53.54 52.52
5,579.15 4/12/04 53.08 52.06
5,579.47 5/13/04 52.76 51.74
5,579.53 6/18/04 52.70 51.68
5,580.17 7/28/04 52.06 51.04
5,580.20 8/30/04 52.03 51.01
5,580.26 9/16/04 51.97 50.95
5,580.12 10/11/04 52.11 51.09
Water Levels and Data over Time
White Mesa Mill -Well TW 4-3
Total or
Measuring Measured Total
Water Land Point Depth to Depth to
Elevation Surface Elevation Length Of Date Of Water Water
(z) (LSD) (MP) Riser (L) Monitoring (blw.MP) (blw.LSD) Total Depth Of Well
5,631.21 5,632.23 1.02 140.30
5,579.93 11/16/04 52.30 51.28
5,580.07 12/22/04 52.16 51.14
5,579.80 1/18/05 52.43 51.41
5,580.35 2/28/05 51.88 50.86
5,580.57 3/15/05 51.66 50.64
5,580.86 4/26/05 51.37 50.35
5,581.20 5/24/05 51.03 50.01
5,581.51 6/30/05 50.72 49.70
5,581.55 7/29/05 50.68 49.66
5,581.68 9/12/05 50.55 49.53
5,581.83 12/7/05 50.40 49.38
5,564.92 3/8/06 67.31 66.29
5,582.73 6/13/06 49.50 48.48
5,582.33 7/18/06 49.90 48.88
5,582.75 11/7/06 49.48 48.46
5,583.35 2/27/07 48.88 47.86
5,559.57 5/2/07 72.66 71.64
5,583.29 8/14/07 48.94 47.92
5,583.49 10/10/07 48.74 47.72
5,584.95 3/26/08 47.28 46.26
5,584.59 6/24/08 47.64 46.62
5,584.55 8/26/08 47.68 46.66
5,584.03 10/14/08 48.20 47.18
5,583.64 3/3/09 48.59 47.57
5,587.34 6/24/09 44.89 43 .87
5,582.90 9/10/09 49.33 48.31
5,583.27 12/11/09 48.96 47.94
5,583.63 3/11 /10 48.60 47.58
5,583.82 5/11 /10 48.41 47.39
5,583.51 9/29/1 0 48.72 47.70
5,582.86 12/21/10 49.37 48.35
5,582.60 2/28/11 49.63 48 .61
5,590.00 6/21/11 42.23 41.21
5,582.70 9/20/11 49.53 48.51
5,583.05 12/21/11 49.18 48.16
5,581.93 3/27/12 50.30 49.28
5,582.03 6/28/12 50.20 49.18
5,582.08 9/27/12 50.15 49.13
5,581.94 12/28/12 50.29 49.27
5,581.52 3/28/13 50.71 49.69
5,580.88 6/27/13 51.35 50.33
5,580.58 9/27/13 51.65 50.63
5,580.38 12/20/13 51.85 50.83
Water Levels and Data over Time
White Mesa Mill -Well TW 4-3
Total or
Measuring Measured Total
Water Land Point Depth to Depth to
Elevation Surface Elevation Length Of Date Of Water Water
(z) (LSD) (MP) Riser (L) Monitoring (blw.MP) (blw.LSD) Total Depth Of Well
5,631.21 5,632.23 1.02 140.30
5,579.62 3/27/14 52.61 51.59
5,578.52 6/25/14 53.71 52.69
5,577.59 9/25/14 54.64 53.62
5,577.40 12/17/14 54.83 53.81
5,576.73 3/26/15 55.50 54.48
5,576.62 6/22/15 55.61 54.59
5,576.16 9/30/15 56.07 55.05
5,575.57 12/2/15 56.66 55.64
5,575.62 3/30/16 56.61 55.59
5,574.89 6/30/16 57.34 56.32
5,574.37 9/29/16 57.86 56.84
5,574.23 12/21/16 58.00 56.98
5,574.23 3/30/17 58.00 56.98
5,573.72 6/27/17 58.51 57.49
5,573.28 9/28/17 58.95 57.93
5,572.66 11/30/17 59.57 58.55
5,572.19 3/28/18 60.04 59.02
5,571.83 6/22/18 60.40 59.38
5,571.34 9/25/18 60.89 59.87
5,570.99 12/17/18 61.24 60.22
5,570.21 3/25/19 62.02 61.00
5,570.28 6/24/19 61.95 60.93
5,570.04 8/12/19 62.19 61.17
5,569.68 11/18/19 62.55 61.53
5,569.35 2/10/20 62.88 61.86
5,568.92 5/4/20 63.31 62.29
5,568.38 9/22/20 63.85 62.83
5,568.28 12/30/20 63.95 62.93
5,568.31 3/11/21 63.92 62.90
5,567.65 6/24/21 64.58 63.56
5,567.61 8/13/21 64.62 63.60
5,567.72 12/30/21 64.51 63.49
5,567.15 2/10/22 65.08 64.06
5,567.57 6/28/22 64.66 63.64
5,566.83 8/15/22 65.40 64.38
5,566.63 11/17/22 65.60 64.58
5,566.89 3/24/23 65.34 64.32
5,566.44 6/26/23 65.79 64.77
--.J
Vl
--.J 0
Depth Below Measuring Point (ft.)
0\
Vl
0\ 0 Vl
Vl
Vl 0
.j::.
Vl
.j::.
0
t-----+-----.......:----;------+------+-------,j--------t-11/29/99
-04/27/00
09/24/00
02/21/01
-07/21/01
12/18/01
-05/17/02
10/14/02
03/13/03
08/10/03
01/07/04
06/05/04
-11/02/04
04/01/05
08/29/05
01/26/06
-06/25/06
-11/22/06
04/21/07
-09/18/07
02/15/08
-07/14/08
12/11/08
• 05/10/09
-10/07/09
-03/06/10
08/03/10
12/31/10
-05/30/11
-10/27/11
03/25/12
08/22/12
-01/19/13
-06/18/13
-11/15/13
-04/14/14
09/11/14
-02/08/15
07/08/15
-12/05/15
05/03/16
-09/30/16
-02/27/17
-07/27/17
12/24/17
05/23/18
10/20/18
-03/19/19
08/16/19
01/13/20
-06/11/20
11/08/20
-04/07/21
09/04/21
02/01/22
• 07/01/22
11/28/22
04/27/23
-09/24/23
02/21/24
-07/20/24 ..__ __ _.__ __ ~--~~--~--~--~--~ 12/17/24
~ ~ .,:.
I (.H
~ ...... ~ ..,
~ ~ "Cl ...... =-~ ~ ..,
~ ... = ~ -~
C"' -= "Cl _,
Water Levels and Data over Time
White Mesa Mill -Well TW 4-4
Total or
Measuring Measured Total
Water Land Point Depth to Depth to Total
Elevation Surface Elevation Length Of Date Of Water Water Depth Of
(z) (LSD) (MP) Riser (L) Monitoring (blw.MP) (blw.LSD) Well
5,612.301 5,613.485 1.184 114.5
5,512.15 05/25/00 101.34 100.16
5,518.99 06/09/00 94.50 93.32
5,512.15 06/16/00 101.34 100.16
5,517.47 06/26/00 96.02 94.84
5,520.15 07/06/00 93.34 92.16
5,521.44 07/13/00 92.05 90.87
5,522.01 07/18/00 91.48 90.30
5,522.95 07/27/00 90.54 89.36
5,523.49 08/02/00 90.00 88.82
5,523.85 08/09/00 89.64 88.46
5,523.89 08/1 5/00 89.60 88.42
5,524.56 09/01/00 88 .93 87.75
5,513.24 09/08/00 100.25 99.07
5,516.67 09/13/00 96.82 95.64
5,519.09 09/20/00 94.40 93.22
5,522.17 10/05/00 91.32 90.14
5,524.67 11/09/00 88.82 87.64
5,518.55 12/06/00 94.94 93.76
5,527.70 01 /03/01 85.79 84.61
5,529.09 02/09/01 84.40 83.22
5,529.54 03/27/01 83 .95 82.77
5,530.24 04/30/01 83.25 82.07
5,530.27 05/31/01 83.22 82.04
5,534.41 06/22/01 79.08 77.90
5,533.15 07/10/01 80.34 79.16
5,534.04 08/20/01 79.45 78 .27
5,534.47 09/19/01 79.02 77.84
5,533.29 10/02/01 80.20 79.02
5,533.87 11/08/01 79.62 78.44
5,534.28 12/03/01 79.21 78.03
5,534.72 01 /03/02 78.77 77.59
5,535.44 02/06/02 78 .05 76.87
5,536.45 03/26/02 77.04 75.86
5,536.41 04/09/02 77.08 75.90
5,537.34 05/23/02 76.15 74.97
5,537.33 06/05/02 76.16 74.98
5,537.98 07/08/02 75.51 74.33
5,538.83 08/23/02 74.66 73.48
5,539.28 09/11/02 74.21 73 .03
5,539.77 10/23/02 73.72 72 .54
5,540.21 11/22/02 73.28 72.10
5,540.30 12/03/02 73.19 72.01
5,540.80 01/09/03 72.69 71.51
Water Levels and Data over Time
White Mesa Mill -Well TW 4-4
Total or
Measuring Measured Total
Water Land Point Depth to Depth to Total
Elevation Surface Elevation Length Of Date Of Water Water Depth Of
(z) (LSD) (MP) Riser (L) Monitoring (blw.MP) (blw.LSD) Well
5,612.301 5,613.485 1.184 114.5
5,540.99 02/12/03 72.50 71.32
5,541.68 03/26/03 71.81 70.63
5,541.77 04/02/03 71.72 70.54
5,541.89 05/01/03 71.60 70.42
5,542.03 06/09/03 71.46 70.28
5,541.93 07/07/03 71.56 70.38
5,541.89 08/04/03 71.60 70.42
5,541.83 09/11/03 71.66 70.48
5,541.89 10/02/03 71.60 70.42
5,542.00 11/07/03 71.49 70.31
5,542.01 12/03/03 71.48 70.30
5,542.56 01/15/04 70.93 69.75
5,542.71 02/10/04 70.78 69.60
5,543.23 03/28/04 70.26 69.08
5,543.56 04/12/04 69.93 68.75
5,543.87 05/13/04 69.62 68.44
5,543.92 06/18/04 69.57 68.39
5,544.66 07/28/04 68.83 67.65
5,544.80 08/30/04 68.69 67.51
5,544.85 09/16/04 68.64 67.46
5,544.71 10/11/04 68.78 67.60
5,544.53 11/16/04 68.96 67.78
5,544.63 12/22/04 68.86 67.68
5,544.31 01/18/05 69.18 68.00
5,544.59 02/28/05 68.90 67.72
5,544.69 03/15/05 68.80 67.62
5,544.68 04/26/05 68.81 67.63
5,544.79 05/24/05 68.70 67.52
5,544.80 06/30/05 68.69 67.51
5,544.78 07/29/05 68.71 67.53
5,545.01 09/12/05 68.48 67.30
5,545.23 12/07/05 68.26 67.08
5,545.74 03/08/06 67.75 66.57
5,545.79 06/14/06 67.70 66.52
5,545.86 07/18/06 67.63 66.45
5,545.81 11/07/06 67.68 66.50
5,546.68 02/27/07 66.81 65.63
5,546.54 05/02/07 66.95 65.77
5,547.16 08/15/07 66.33 65.15
5,547.22 10/10/07 66.27 65.09
5,548.31 03/26/08 65.18 64.00
5,548.87 06/24/08 64.62 63.44
5,549.24 08/26/08 64.25 63.07
Water Levels and Data over Time
White Mesa Mill -Well TW 4-4
Total or
Measuring Measured Total
Water Land Point Depth to Depth to Total
Elevation Surface Elevation Length Of Date Of Water Water Depth Of
(:i) (LSD) (MP) Riser (L) Monitoring (blw.MP) (blw.LSD) Well
5,61 2.301 5,6 13.485 1.184 11 4.5
5,549.31 10/14/08 64.18 63.00
5,549.73 03/03/09 63.76 62.58
5,549.91 06/24/09 63.58 62.40
5,549.70 09/10/09 63.79 62.61
5,549.87 12/11/09 63.62 62.44
5,545.60 03/11/10 67.89 66.71
5,530.88 05/11/10 82.61 81.43
5,545.24 09/29/10 68.25 67.07
5,533.66 12/21/10 79.83 78.65
5,544.44 02/28/11 69.05 67.87
5,543.73 06/21/11 69.76 68.58
5,540.48 09/20/11 73.01 71.83
5,544.36 12/21/11 69.13 67.95
5,543.48 03/27/12 70.01 68.83
5,543.49 06/28/12 70.00 68.82
5,543.36 09/27/12 70.13 68.95
5,543.51 12/28/12 69.98 68.80
5,543.49 03/28/13 70.00 68.82
5,543.36 06/27/13 70.13 68.95
5,544.59 09/27/13 68.90 67.72
5,543.33 12/20/1 3 70.16 68.98
5,544.11 03 /27/14 69.38 68.20
5,543.61 06/25/14 69.88 68.70
5,543.67 09/25/14 69.82 68.64
5,543.69 12/17/14 69.80 68.62
5,541.49 03/26/15 72.00 70.82
5,539.67 06/22/15 73.82 72.64
5,541.35 09/30/15 72.14 70.96
5,541.63 12/02/15 71.86 70.68
5,540.38 03/30/16 73 .11 71.93
5,539.46 06/30/16 74.03 72.85
5,540.39 09/29/16 73 .10 71.92
5,539.21 12/21/16 74.28 73.10
5,539.53 03 /30/17 73.96 72.78
5,539.89 06/27/17 73.60 72.42
5,540.09 09/28/17 73.40 72.22
5,539.07 11/30/17 74.42 73.24
5,540.45 03 /28/18 73.04 71.86
5,531.79 06/22/18 81.70 80.52
5,531.94 09/24/18 81.55 80.37
5,540.22 12/17/18 73 .27 72.09
5,514.10 03/25/19 99.39 98.21
5,529.11 06/24/19 84.38 83 .20
Water Levels and Data over Time
White Mesa Mill -Well TW 4-4
Total or
Measuring Measured Total
Water Land Point Depth to Depth to Total
Elevation Surface Elevation Length Of Date Of Water Water Depth Of
(z) (LSD) (MP) Riser (L) Monitoring (blw.MP) (blw.LSD) Well
5,612.301 5,613.485 1. 184 114.5
5,527.15 08/12/19 86.34 85.16
5,528.08 11/18/19 85.41 84.23
5,534.40 02/10/20 79.09 77.91
5,533.16 05/04/20 80.33 79.15
5,539.39 09/21/20 74.10 72.92
5,536.54 12/28/20 76.95 75.77
5,533.98 03/11/21 79.51 78.33
5,528.14 06/24/21 85.35 84.17
5,532.43 08/13/21 81.06 79.88
5,530.32 12/30/21 83.17 81.99
5,539.46 02/10/22 74.03 72.85
5,529.37 06/28/22 84.12 82.94
5,524.97 08/15/22 88.52 87.34
5,530.93 11/17/22 82.56 81.38
5,532.43 03/24/23 81.06 79.88
5,529.32 06/26/23 84.17 82.99
-0 0 0
Depth Below Measuring Point (ft.)
'° 0 00 0 -.J 0 °' 0
Vl
0
I , = • 1, ,5 I 1-r 05125100
I • ► -==;:I: ....._ r 10/22/00
03/21/01
08/18/01
01/15/02
-06/14/02
11/11/02
04/10/03
09/07/03
02/04/04
07/03/04
11/30/04
04/29/05
09/26/05
02/23/06
07/23/06
12/20/06
05/19/07
10/16/07
03/14/08
-08/11/08
-01/08/09
.. 06/07/09
-11/04/09
· 04/03/10
· 08/31/10
· 01/28/11
· 06/27/11
11/24/11
· 04/22/12
09/19/12
.. 02/16/13
07/16/13
12/13/13
05/12/14
10/09/14
03/08/15
08/05/15
-01/02/16
-05/31/16
10/28/16 ,_ 03/27/17
08/24/17
01/21/18
06/20/18
11/17 /18
04/16/19
-09/13/19
02/10/20
07/09/20
12/06/20
05/05/21
10/02/21
-03/01/22
07/29/22
12/26/22
05/25/23
10/22/23
03/20/24
-08/17/24
L-__ ___. ___ __._ ___ __._ ___ ......_ ___ ~--~01/14/25
~ ~ ,i;..
I ,i;..
~ ...... ~ .,
~ ~
"'Cl ...... =-0 -< ~ .,
~ ....
9 ~ -?
O"' -9
"'Cl --
Water Levels and Data over Time
White Mesa Mill-Well TW4-5
Total or
Measuring Measured Total
Water Land Point Depth to Depth to Total
Elevation Surface Elevation Length Of Date Of Water Water Depth Of
(z) (LSD) (MP) Riser (L) Monitori:ng (blw.MP) (blw . .LSD) Well
5,638.75 5 640.70 1.95 121.85
5,579.30 01/02/00 61.40 59.45
5,579.60 01/10/00 61.10 59 .15
5,579.35 01/17/00 61.35 59.40
5,579.60 01 /24/00 61.10 59.15
5,579.50 02/01/00 61.20 59.25
5,579.50 02/07/00 61.20 59.25
5,579.90 02/14/00 60.80 58 .85
5,579.90 02/23/00 60.80 58 .85
5,580.20 03 /01/00 60.50 58 .55
5,580.00 03 /08/00 60.70 58 .75
5,580.04 03 /15/00 60.66 58.71
5,580.70 03 /20/00 60.00 58.05
5,580.30 03/29/00 60.40 58.45
5,580.00 04/04/00 60.70 58.75
5,580.20 04/13/00 60.50 58.55
5,580.40 04/21/00 60.30 58.35
5,580.50 04/28/00 60.20 58.25
5,580.50 05/01/00 60.20 58.25
5,580.90 05/11/00 59.80 57.85
5,580.50 05/15/00 60.20 58 .25
5~580.75 05 /25/00 59.95 58 .00
5,580.80 06/09/00 59.90 57.95
5,580.92 06116/00 59.78 57.83
5,580.80 06/26/00 59.90 57.95
5,580.90 07/06/00 59.80 57.85
5,581.05 07/13/00 59.65 57.70
5,580.90 07/18/00 59.80 57.85
5,581.05 07/27/00 59.65 57.70
5,581.06 08/02/00 59.64 57.69
5,581.08 08/09/00 59.62 57.67
5,581.07 08/16/00 59.63 57.68
5,581.25 08/31/00 59.45 57.50
5,581.32 09/08/00 59.38 57.43
5,581.34 09/13/00 59.36 57.41
5,581.41 09/20/00 59.29 57.34
5,581.37 10/05/00 59.33 57.38
5,581.66 11/09/00 59.04 57.09
5,581.63 12/06/00 59.07 57.12
5,581.92 01/03/01 58.78 56.83
5,582.20 02/09/01 58.50 56.55
5,582.54 03/28/,01 58.16 56.21
5,582.72 04/30/01 57.98 56.03
5,582.72 05/31/01 57.98 56.03
5,582.81 06/22/01 57.89 55.94
5,582.92 07/10/01 57.78 55.83
5,583.17 08/20/01 57.53 55.58
Water Levels and Data over Time
White Mesa Mill -Well TW 4-5
Total or
Measuring Measured Total
Water Land Point Depth to Depth to Total
Elevation Surface Elevation Length Of Date Of Water Water Depth Of
(z) (LSD) (MP) Riser (L) Monitoring (blw.MP) (blw.LSD) Well
5,638.75 5,640.70 1.95 121.85
5,583.28 09/19/01 57.42 55.47
5,583.36 10/02/01 57.34 55.39
5,583.49 11/08/01 57.21 55.26
5,583.84 12/03/01 56.86 54.91
5,583.79 01/03/02 56.91 54.96
5,583.96 02/06/02 56.74 54.79
5,584.39 03/26/02 56.31 54.36
5,584.12 04/09/02 56.58 54.63
5,584.55 05/23/02 56.15 54.20
5,584.42 06/05/02 56.28 54.33
5,583.65 07/08/02 57.05 55.10
5,584.90 08/23/02 55.80 53.85
5,585.02 09/11/02 55.68 53.73
5,585.20 10/23/02 55.50 53.55
5,585.15 11/22/02 55.55 53.60
5,585.42 12/03/02 55.28 53.33
5,585.65 01/09/03 55.05 53.10
5,585.65 02/12/03 55.05 53.10
5,585.92 03/26/03 54.78 52.83
5,586.22 04/02/03 54.48 52.53
5,586.01 05/01/03 54.69 52.74
5,584.81 06/09/03 55.89 53.94
5,584".34 07/07/03 56.36 54.41
5,584.40 08/04/03 56.30 54.35
5,583.88 09/11/03 56.82 54.87
5,583.57 10/02/03 57.13 55.18
5,583.39 11/07/03 57.31 55.36
5,583.97 12/03/03 56.73 54.78
5,585.28 01/15/04 55.42 53.47
5,585.50 02/10/04 55.20 53.25
5,585.87 03/28/04 54.83 52.88
5,586.20 04/12/04 54.50 52.55
5,586.45 05/13/04 54.25 52.30
5,586.50 06/18/04 54.20 52.25
5,587.13 07/28/04 53.57 51.62
5,586.22 08/30/04 54.48 52.53
5,585.69 09/16/04 55.01 53.06
5,585.17 10/11/04 55.53 53.58
5,584.64 11/16/04 56.06 54.11
5,584.77 12/22/04 55.93 53.98
5,584.65 01/18/05 56.05 54.10
5,584.98 02/28/05 55.72 53.77
5,585.15 03/15/05 55.55 53.60
5,586.25 04/26/05 54.45 52.50
5,586.79 05/24/05 53.91 51.96
5,586.52 06/30/05 54.18 52.23
Water Levels and Data over Time
White Mesa Mill -Well TW 4-5
Total or
Measuring Measured Total
Water Land Point Depth to Depth to Total
Elevation Surface Elevation Length Of Date Of Water Water Depth Of
(z) (LSD) (MP) Riser (L) Monitoring (blw.MP) (blw.LSD) Well
5,638.75 5,640.70 1.95 121.85
5,586.03 07/29/05 54.67 52.72
5,586.05 09/12/05 54.65 52.70
5,585.80 12/07/05 54.90 52.95
5,587.06 03/08/06 53.64 51.69
5,585.90 06/13/06 54.80 52.85
5,585.32 07/18/06 55.38 53.43
5,585.35 11/07/06 55.35 53.40
5585.81 02/27/07 54.89 52.94
5,585.20 05/02/07 55.50 53.55
5,586.66 08/14/07 54.04 52.09
5,586.80 10/10/07 53.90 51.95
5,588.48 03/26/08 52.22 50.27
5,586.51 06/24/08 54.19 52.24
5,586.45 08/26/08 54.25 52.30
5,585.40 10/14/08 55.30 53.35
5,584.80 03/03/09 55.90 53.95
5,584.73 06/24/09 55.97 54.02
5,584.36 09/10/09 56.34 54.39
5,585.02 12/11/09 55.68 53.73
5,585.66 03/11/10 55.04 53.09
5,584.86 05/11/10 55.84 53.89
5,584.55 09/29/10 56.15 54.20
5,584.17 12/21/10 56.53 54.58
5,583.55 02/28/11 57.15 55.20
5,584.72 06/21/11 55.98 54.03
5,584.62 09/20/11 56.08 54.13
5,585.04 11/21/11 55.66 53.71
5,583.89 03/27/12 56.81 54.86
5,583.92 06/28/12 56.78 54.83
5,583.89 09/27/12 56.81 54.86
5,583.89 12/28/12 56.81 54.86
5,582.88 03/28/13 57.82 55.87
5,582.05 06/27/13 58.65 56.70
5,581.35 09/27/13 59.35 57.40
5,580.52 12/20/13 60.18 58.23
5,579.44 03/27/14 61.26 59.31
5,578.11 06/25/14 62.59 60.64
5,577.15 09/25/14 63.55 61.60
5,577.44 12/17/14 63.26 61.31
5,577.37 03/26/15 63.33 61.38
5,577.46 06/22/15 63.24 61.29
5,576.92 09/30/15 63.78 61.83
5,576.33 12/02/15 64.37 62.42
5,576.30 03/30/16 64.40 62.45
5,575.72 06/30/16 64.98 63.03
5,575.12 09/29/16 65.58 63.63
Water Levels and Data over Time
White Mesa Mill -Well TW 4-5
Total or
Measuring Measured Total
Water Land Point Depth to Depth to Total
Elevation Surface Elevation Length Of Date Of Water Water Depth Of
(z) (LSD) (MP) Riser (L) Monitoring (blw.MP) (blw.LSD) Well
5,638.75 5,640.70 1.95 121.85
5,574.77 12/21/16 65.93 63.98
5,575.03 03/30/17 65.67 63.72
5,574.55 06/27/17 66.15 64.20
5,574.09 09/28/17 66.61 64.66
5,573.48 11/30/17 67.22 65.27
5,573.05 03/28/18 67.65 65.70
5,572.68 06/22/18 68.02 66.07
5,571.89 09/24/18 68.81 66.86
5,571.86 12/17/18 68.84 66.89
5,571.15 03/25/19 69.55 67.60
5,571.26 06/24/19 69.44 67.49
5,571.12 08/12/19 69.58 67.63
5,570.73 11/18/19 69.97 68.02
5,570.50 02/10/20 70.20 68.25
5,570.15 05/04/20 70.55 68.60
5,569.36 09/22/20 71.34 69.39
5,569.17 12/30/20 71.53 69.58
5,569.24 03/11/21 71.46 69.51
5,568.71 06/24/21 71.99 70.04
5,568.68 08/13/21 72.02 70.07
5,568.99 12/30/21 71.71 69.76
5,568.23 02/10/22 72.47 70.52
5,568.73 06/28/22 71.97 70.02
5,568.04 08/15/22 72.66 70.71
5,567.85 11/17/22 72.85 70.9
5567.40 03/24/23 73.30 71.35
5567.39 06/26/23 73.31 71.36
-.J Vl -.J 0
Depth Below Measuring Point (ft.)
0\ Vl 0\ 0 Vl Vl
Vl 0
1--------+-----+-----ellrac-if---------t-----+ 01/02/00
05/31/00
10/28/00
03/27/01
08/24/01
01/21/02
-06/20/02
-11/17/02
04/16/03
09/13/03
02/10/04
07/09/04
12/06/04
• 05/05/05
10/02/05
-03/01/06
-07/29/06
12/26/06
-05/25/07
10/22/07
-03/20/08
-08/17/08
-01/14/09
06/13/09
-11/10/09
04/09/10
09/06/10
-02/03/11
-07/03/11
-11/30/11
04/28/12
-09/25/12
02/22/13
-07/22/13
-12/19/13
05/18/14
-10/15/14
-03/14/15
-08/11/15
-01/08/16
06/06/16
-11/03/16
-04/02/17
-08/30/17
01/27/18
-06/26/18
11/23/18
04/22/19
09/19/19
02/16/20
07/15/20
12/12/20
05/11/21
10/08/21
03/07/22
08/04/22
01/01/23
05/31/23
10/28/23
03/26/24
08/23/24
L--___ ____,__ ____ __,__ ___ _____. ____ __._ ____ _,_01/20/25
~ ~ ~ I Ul
~ ...... ~ ~
~ ~ "Cl ...... =-0 < ~ ~
~ ....
9 ~ -?
O" -9 "Cl --
Water Levels and Data over Time
White Mesa Mill -Well TW 4-6
Total or
Measuring Measured Total Total
Water Land Point Depth to Depth to Depth Of
Elevation Surface Elevation Length Of Date Of Water Water Well
(z) (LSD) (MP) Riser (L) Monitoring (blw.MP) (blw.LSD) (blw.LSD)
5,607.33 5,608.78 1.450 99.60
5,522.28 05/25/00 86.50 85.05
5,521.51 06/09/00 87.27 85.82
5,522.35 06/16/00 86.43 84.98
5,522.14 06/26/00 86.64 85.19
5,522.25 07/06/00 86.53 85.08
5,522.13 07/13/00 86.65 85.20
5,522.17 07/18/00 86.61 85.16
5,522.26 07/25/00 86.52 85.07
5,522.31 08/02/00 86.47 85.02
5,522.33 08/09/00 86.45 85.00
5,522.35 08/15/00 86.43 84.98
5,522.40 08/31/00 86.38 84.93
5,522.40 09/08/00 86.38 84.93
5,522.45 09/13/00 86.33 84.88
5,522.53 09/20/00 86.25 84.80
5,522.39 10/05/00 86.39 84.94
5,522.42 11/09/00 86.36 84.91
5,522.29 12/06/00 86.49 85.04
5,522.63 01/03/01 86.15 84.70
5,522.72 02/09/01 86.06 84.61
5,522.90 03/26/01 85.88 84.43
5,522.70 04/30/01 86.08 84.63
5,522.89 05/31/01 85.89 84.44
5,522.88 06/20/01 85.90 84.45
5,522.96 07/10/01 85.82 84.37
5,523.10 08/20/01 85.68 84.23
5,523.23 09/19/01 85.55 84.10
5,523.21 10/02/01 85.57 84.12
5,523.25 11/08/01 85.53 84.08
5,523.46 12/03/01 85.32 83.87
5,523.36 01/03/02 85.42 83.97
5,523.50 02/06/02 85.28 83.83
5,523.94 03/26/02 84.84 83.39
5,523.75 04/09/02 85.03 83.58
5,524.23 05/23/02 84.55 83.10
5,523.98 06/05/02 84.80 83.35
5,524.31 07/08/02 84.47 83.02
5,524.36 08/23/02 84.42 82.97
5,524.49 09/11/02 84.29 82.84
5,524.71 10/23/02 84.07 82.62
5,524.60 11/22/02 84.18 82.73
5,524.94 12/03/02 83.84 82.39
5,525.10 01/09/03 83.68 82.23
5,525.15 02/12/03 83.63 82.18
5,525.35 03/26/03 83.43 81.98
5,525.68 04/02/03 83.10 81.65
Water Levels and Data over Time
White Mesa Mill -Well TW 4-6
Total or
Measuring Measured Total Total
Water Land Point Depth to Depth to Depth Of
Elevation Surface Elevation Length Of Date Of Water Water Well
(z) (LSD) (MP) Riser (L) Monitoring (blw.MP) {blw.LSD) (blw.LSD)
5,607.33 5,608.78 1.450 99.60
5,525.74 05/01/03 83.04 81.59
5,525.98 06/09/03 82.80 81.35
5,526.04 07/07/03 82.74 81.29
5,526.07 08/04/03 82.71 81.26
5,526.42 09/11/03 82.36 80.91
5,526.30 10/02/03 82.48 81.03
5,526.41 11/07/03 82.37 80.92
5,526.46 12/03/03 82.32 80.87
5,526.83 01/15/04 81.95 80.50
5,526.81 02/10/04 81.97 80.52
5,527.14 03/28/04 81.64 80.19
5,527.39 04/12/04 81.39 79.94
5,527.64 05/13/04 81.14 79.69
5,527.70 06/18/04 81.08 79.63
5,528.16 07/28/04 80.62 79.17
5,528.30 08/30/04 80.48 79.03
5,528.52 09/16/04 80.26 78.81
5,528.71 10/11/04 80.07 78.62
5,528.74 11/16/04 80-.04 78.59
5,529.20 12/22/04 79.58 78.13
5,528.92 01/18/05 79.86 78.41
5,529.51 02/28/05 79.27 77.82
5,529.74 03/15/05 79.04 77.59
5,529.96 04/26/05 78.82 77.37
5,530.15 05/24/05 78.63 77.18
5,530.35 06/30/05 78.43 76.98
5,530.47 07/29/05 78.31 76.86
5,530.95 09/12/05 77.83 76.38
5,531.50 12/07/05 77.28 75.83
5,532.43 03/08/06 76.35 74.90
5,533.49 06/13/06 75.29 73.84
5,532.58 07/18/06 76.20 74.75
5,532.88 11/07/06 75.90 74.45
5534.09 02/27/07 74.69 73.24
5,534.04 05/02/07 74.74 73.29
5,534.43 08/14/07 74.35 72.90
5,554.54 10/10/07 54.24 52.79
5,535.40 03/26/08 73.38 71.93
5,535.55 06/24/08 73.23 71.78
5,535.90 08/26/08 72.88 71.43
5,535.87 10/14/08 72.91 71.46
5,536.42 03/10/09 72.36 70.91
5,536.71 06/24/09 72.07 70.62
5,536.83 09/10/09 71.95 70.50
5,537.35 12/11/09 71.43 69.98
5,537.93 03/11/10 70.85 69.40
Water Levels and Data over Time
White Mesa Mill -Well TW 4-6
Total or
Measuring Measured Total Total
Water Land Point Depth to Depth to Depth Of
Elevation Surface Elevation Length Of Date Of Water Water Well
(z) (L D) (MP) Riser (L) Monitoring (blw.MP) (blw.LSD) (blw.LSD)
5,607.33 5,608.78 1.450 99.60
5,538.14 05/11/l 0 70.64 69.19
5,538.03 09/29/10 70.75 69.30
5,538.04 12/21/10 70.74 69.29
5,537.98 02/28/11 70.80 69.35
5,538.46 06/21/11 70.32 68.87
5,538.37 09/20/11 70.41 68.96
5,538.87 12/21/11 69.91 68.46
5,538.73 03/27/12 70.05 68.60
5,538.80 06/28/12 69.98 68.53
5,539.04 09/27/12 69.74 68.29
5,538.74 12/28/12 70.04 68.59
5,539.53 03/28/13 69.25 67.80
5,539.46 06/27/13 69.32 67.87
5,539.62 09/27/13 69.16 67.71
5,539.85 12/20/13 68.93 67.48
5,539.65 03/27/14 69.13 67.68
5,538.85 06/25/14 69.93 68.48
5,538.69 09/25/14 70.09 68.64
5,538.71 12/17/14 70.07 68.62
5,538.03 03/26/15 70.75 69.30
5,537.78 06/22/15 71.00 69.55
5,537.40 09/30/15 71.38 69.93
5,537.44 12/02/15 71.34 69.89
5,536.76 03/30/16 72.02 70.57
5,536.08 06/30/16 72.70 71.25
5,535.54 09/29/16 73.24 71.79
5,535.38 12/21/16 73.40 71.95
5,535.48 03/30/17 73.30 71.85
5,535.13 06/27/17 73.65 72.20
5,534.78 09/28/17 74.00 72.55
5,534.54 11/30/17 74.24 72.79
5,534.38 03/28/18 74.40 72.95
5,533.92 06/22/18 74.86 73.41
5,533.49 09/25/18 75.29 73.84
5,533.17 12/17/18 75.61 74.16
5,532.63 03/25/19 76.15 74.70
5,532.56 06/24/19 76.22 74.77
5,532.28 08/12/19 76.50 75.05
5,531.69 11/18/19 77.09 75.64
5,531.34 02/10/20 77.44 75.99
5,530.76 05/04/20 78.02 76.57
5,530.36 09/22/20 78.42 76.97
5,530.29 12/30/20 78.49 77.04
5,530.20 03/11/21 78.58 77.13
5,529.69 06/24/21 79.09 77.64
5,529.67 08/13/21 79.11 77.66
Water Levels and Data over Time
White Mesa Mill -Well TW 4-6
Total or
Measuring Measured Total Total
Water Land Point Depth to Depth to Depth Of
Elevation Surface Elevation Length Of Date Of Water Water Well
(z) (LSD) (MP) Riser (L) Monitoring (blw.MP) (blw.LSD) (blw.LSD)
5,607.33 5,608.78 1.450 99.60
5,529.78 12/30/21 79.00 77.55
5,529.23 02/10/22 79.55 78.10
5,529.65 06/28/22 79.13 77.68
5,528.84 08/15/22 79.94 78.49
5,528.58 11/17/22 80.20 78.75
5,528.28 03/24/23 80.50 79.05
5,528.43 06/26/23 80.35 78.90
\0 0 00
V,
00 0
Depth Below Measuring Point (ft.)
-..I
V,
-..I 0 0\
V,
0\ 0 V,
V,
V,
0
05/25/00
10/22/00
-03/21/01
-08/18/01
-01/15/02
06/14/02
11/11/02
-04/10/03
-09/07/03
02/04/04
07/03/04
11/30/04
-04/29/05
-09/26/05
-02/23/06
07/23/06
-12/20/06 ~ -05/19/07 ~ -10/16/07
-03/14/08 ~ I
-08/11/08 0-.
-01/08/09 ~ -06/07/09
11/04/09 """" ~
-04/03/10 ""'I
-08/31/10 0
-01/28/11 ~
"C 06/27/11 """" 11/24/11 =-
-04/22/12 0
-09/19/12 -< ~
02/16/13 ""'I
07/16/13 ~
12/13/13 .... a 05/12/14 ~ -10/09/14 ---03/08/15 ~ -08/05/15 C"' 01/02/16 -05/31/16 a
-10/28/16 "C --03/27/17
-08/24/17
-01/21/18
06/20/18
11/17/18
04/16/19
09/13/19
02/10/20
07/09/20
-12/06/20
-05/05/21
-10/02/21
-03/01/22
07/29/22
12/26/22
-05/25/23
-10/22/23
03/20/24
08/17/24
01/14/25
Water Levels and Data over Time
White Mesa Mill-Well TW4-7
Measuring Total or Total Water Land Point Length Of Date Of Measured Depth to Total Depth
Elevation Surface Elevation Riser (L) Monitoring Depth to Water Of Well
(WL) (LSD) Water (blw.LSD) (MP) !blw.MPl (blw.LSD)
5 619.87 5 621.07 1.20 121.0
5,552.37 11/29/99 68.70 67.50
5,553.57 01/02/00 67.50 66.30
5,553.87 01/10/00 67.20 66.00
5,553.72 01/17/00 67.35 66.15
5,553.97 01/24/00 67.10 65.90
5,553.87 02/01/00 67.20 66.00
5,553.87 02/07/00 67.20 66.00
5,554.17 02/14/00 66.90 65.70
5,554.27 02/23/00 66.80 65.60
5,554.37 03/01/00 66.70 65 .50
5,554.37 03/08/00 66.70 65 .50
5,554.27 03/15/00 66.80 65.60
5,554.77 03/20/00 66.30 65.10
5,554.57 03/29/00 66.50 65.30
5,554.27 04/04/00 66.80 65.60
5,554.57 04/13/00 66.50 65.30
5,554.77 04/21/00 66.30 65.10
5,554.87 04/28/00 66.20 65.00
5,554.87 05/01/00 66.20 65.00
5,555.27 05/11/00 65.80 64.60
5,554.97 05/15/00 66.10 64.90
5,555.27 05/25/00 65 .80 64.60
5,555.33 06/09/00 65.74 64.54
5,555.45 06/16/00 65.62 64.42
5,555.22 06/26/00 65.85 64.65
5,555.45 07/06/00 65.62 64.42
5,555.40 07/13/00 65.67 64.47
5,555.45 07/18/00 65.62 64.42
5,555.59 07/27/00 65.48 64.28
5,555.65 08/02/00 65.42 64.22
5,555.70 08/09/00 65.37 64.17
5,555.74 08/16/00 65.33 64.13
5,555.96 08/31/00 65 .11 63.91
5,555.87 09/08/00 65.20 64.00
5,555.95 09/13/00 65.12 63 .92
5,556.05 09/20/00 65.02 63.82
5,556.06 10/05/00 65.01 63.81
5,556.17 10/12/00 64.90 63 .70
5,556.20 10/19/00 64.87 63 .67
5,556.22 10/23/00 64:85 63.65
5,556.36 11/09/00 64.71 63 .51
5,556.42 11/14/00 64.65 63.45
5,556.45 11/30/00 64.62 63.42
5,556.15 12/06/00 64.92 63.72
Water Levels and Data over Time
White Mesa Mill-Well TW4-7
Measuring Total or Total Water Land Point Length Of Date Of Measured Depth to Total Depth
Elevation Surface Elevation Riser (L) Monitoring Depth to Water Of Well
(WL) (LSD) (MP) Water (blw.LSD) (blw.LSD)
fblw.MPl
5,619.87 5,621.07 1.20 121.0
5,556.89 01/14/01 64.18 62.98
5,557.07 02/09/01 64.00 62.80
5,557.62 03/29/01 63.45 62.25
5,557.51 04/30/01 63.56 62.36
5,557.77 05/31/01 63.30 62.10
5,557.84 06/21/01 63.23 62.03
5,557.98 07/10/01 63.09 61.89
5,558.33 08/20/01 62.74 61.54
5,558.57 09/19/01 62.50 61.30
5,558.53 10/02/01 62.54 61.34
5,558.62 11/08/01 62.45 61.25
5,559.03 12/03/01 62.04 60.84
5,559.08 01/03/02 61.99 60.79
5,559.32 02/06/02 61.75 60.55
5,559.63 03/26/02 61.44 60.24
5,559.55 04/09/02 61.52 60.32
5,560.06 05/23/02 61.01 59.81
5,559.91 06/05/02 61.16 59.96
5,560.09 07/08/02 60.98 59.78
5,560.01 08/23/02 61.06 59.86
5,560.23 09/11/02 60.84 59.64
5,560.43 10/23/02 60.64 59.44
5,560.39 11/22/02 60.68 59.48
5,560.61 12/03/02 60.46 59.26
5,560.89 01/09/03 60.18 58.98
5,560.94 02/12/03 60.13 58.93
5,561.28 03/26/03 59.79 58.59
5,561.35 04/02/03 59.72 58.52
5,546.20 05/01/03 74.87 73.67
5,539.47 06/09/03 81.60 80.40
5,541.87 07/07/03 79.20 78.00
5,542.12 08/04/03 78.95 77.75
5,541.91 09/11/03 79.16 77.96
5,544.62 10/02/03 76.45 75.25
5,542.67 11/07/03 78.40 77.20
5,549.96 12/03/03 71.11 69.91
5,557.17 01/15/04 63.90 62.70
5,558.65 02/10/04 62.42 61.22
5,559.90 03/28/04 61.17 59.97
5,560.36 04/12/04 60.71 59.51
5,560.87 05/13/04 60.20 59.00
5,560.95 06/18/04 60.12 58.92
5,561.64 07/28/04 59.43 58.23
5,543.00 08/30/04 78.07 76.87
Water Levels and Data over Time
White Mesa Mill-Well TW4-7
Measuring Total or Total Water Land Measured Total Depth
Elevation Surface Point Length Of Date Of Depth to Depth to Of Well
(WL) (LSD) Elevation Riser (L) Monitoring Water Water (blw.LSD) (MP) {blw.M.P} (blw.LSD)
5,619.87 5,621.07 1.20 121.0
5,541.91 09/16/04 79.16 77.96
5,540.08 10/11/04 80.99 79.79
5,546.92 11/16/04 74.15 72.95
5,546.97 12/22/04 74.10 72.90
5,546.51 01/18/05 74.56 73.36
5,546.66 02/28/05 74.41 73.21
5,546.81 03/15/05 74.26 73.06
5,548.19 04/26/05 72.88 71.68
5,547.11 05/24/05 73.96 72.76
5,546.98 06/30/05 74.09 72.89
5,546.92 07/29/05 74.15 72.95
5,547.26 09/12/05 73.81 72.61
5,547.26 12/07/05 73.81 72.61
5,548.86 03/08/06 72.21 71.01
5,548.62 06/13/06 72.45 71.25
5,550.04 07/18/06 71.03 69.83
5,548.32 11/07 /06 72.75 71.55
5,550.44 02/27/07 70.63 69.43
5,549.69 05/02/07 71.38 70.18
5,549.97 08/14/07 71.10 69.90
5,550.30 10/10/07 70.77 69.57
5,551.92 03/26/08 69.15 67.95
5,552.94 06/24/08 68.13 66.93
5,552.34 08/26/08 68.73 67.53
5,552.61 10/14/08 68.46 67.26
5,552.81 03/10/09 68.26 67.06
5,553.11 06/24/09 67.96 66.76
5,552.55 09/10/09 68.52 67.32
5,553.06 12/11/09 68.01 66.81
5,554.64 03/11/10 66.43 65.23
5,554.20 05/11/10 66.87 65.67
5,553.45 09/29/10 67.62 66.42
5,553.40 12/21/10 67.67 66.47
5,553.93 02/28/11 67.14 65.94
5,553.67 06/21/11 67.4 66.20
5,553.46 09/20/11 67.61 66.41
5,553.78 12/21/11 67.29 66.09
5,553.17 03/27/12 67.90 66.70
5,553.21 06/28/12 67.86 66.66
5,552.90 09/27/12 68.17 66.97
5,553.15 12/28/12 67.92 66.72
5,556.23 03/28/13 64.84 63.64
5,556.04 06/27/13 65.03 63.83
5,556.09 09/27/13 64.98 63.78
Water Levels and Data over Time
White Mesa Mill -Well TW4-7
Measuring Total or Total Water Land Measured Total Depth
Elevation Surface Point Length Of Date Of Depth to Depth to Of Well
(WL) (LSD) Elevation Riser (L) Monitoring Water Water (blw.LSD) (MP) (blw.MP} (blw.LSD)
5,619.87 5,621.07 1.20 121.0
5,555.80 12/20/13 65.27 64.07
5,555.40 03/27/14 65.67 64.47
5,554.20 06/25/14 66.87 65.67
5,552.96 09/25/14 68.11 66.91
5,552.62 12/17/14 68.45 67.25
5,548.57 03/26/15 72.50 71.30
5,555.88 06/22/15 65.19 63.99
5,546.22 09/30/15 74.85 73.65
5,539.47 12/02/15 81.60 80.40
5,545.08 03/30/16 75.99 74.79
5,544.62 06/30/16 76.45 75.25
5,544.61 09/29/16 76.46 75.26
5,544.09 12/21/16 76.98 75.78
5,546.07 03/30/17 75.00 73.80
5,549.36 06/27/17 71.71 70.51
5,541.91 09/28/17 79.16 77.96
5,540.51 11/30/17 80.56 79.36
5,540.71 03/28/18 80.36 79.16
5,540.12 06/22/18 80.95 79.75
5,540.17 09/25/18 80.90 79.70
5,538.26 12/17/18 82.81 81.61
5,538.81 03/25/19 82.26 81.06
5,539.11 06/24/19 81.96 80.76
5,539.75 08/12/19 81.32 80.12
5,539.13 11/18/19 81.94 80.74
5,538.03 02/10/20 83.04 81.84
5,538.29 05/04/20 82.78 81.58
5,540.28 09/22/20 80.79 79.59
5,539.17 12/30/20 81.90 80.70
5,539.03 03/11/21 82.04 80.84
5,538.82 06/24/21 82.25 81.05
5,539.00 08/13/21 82.07 80.87
5,539.08 12/30/21 81.99 80.79
5,537.94 02/10/22 83.13 81.93
5,538.86 06/28/22 82.21 81.01
5,538.64 08/15/22 82.43 81.23
5,538.68 11/17/22 82.39 81.19
5,538.18 03/24/23 82.89 81.69
5,538.37 06/26/23 82.70 81.50
00
Vl
00 0
Depth Below Measur_ing Point (ft.)
--.J Vl --.J 0 °' Vl °' 0 Vl Vl Vl 0
1------+----------':----------i--,--------+----+----------i----;-ll/29/99
-04/27/00
09/24/00
02/21/01
-07/21/01
12/18/01
05/17/02
10/14/02
03/13/03
08/10/03
-01/07/04
06/05/04
-11/02/04
04/01/05
-08/29/05
01/26/06
-06/25/06
11/22/06
-04/21/07
-09/18/07
-02/15/08
07/14/08
-12/11/08
05/10/09
10/07/09
,_ 03/06/10
,_ 08/03/10
,_ 12/31/10
05/30/11
10/27/11
03/25/12
08/22/12
01/19/13
06/18/13
11/15/13
04/14/14
09/11/14
02/08/15
07/08/15
,_ 12/05/15
05/03/16 ,_ 09/30/16
02/27/17
07/27/17
.. 12/24/17
05/23/18
10/20/18
03/19/19
08/16/19
01/13/20
06/11/20
11/08/20
04/07/21
09/04/21
02/01/22
07/01/22
11/28/22
04/27/23
09/24/23
02/21/24
07/20/24
---~--~---~--~--~---~--~ 12/17/24
~ ~
""" I --..J
~ ..... n> .,
~ n>
"'O ..... =-0 -< n> .,
~ ...
9 n> -~
C"' -9
"'O -
Water Levels and Data over Time
White Mesa Mill -Well TW4-8
Total or
Measuring Measured
Water Land Point Depth to Total Depth Total
Elevation Surface Elevation Length Of Date Of Water to Water Depth Of
(WL) (LSD) (MP) Riser (L) Monitoring (blw.MP) (blw.LSD) Well
5,616.80 5,621.40 4.60 126.2
5,546.40 11/29/99 75.00 70.40
5,546.20 01/02/00 75.20 70.60
5,546.50 01/10/00 74.90 70.30
5,546.30 01/17/00 75.10 70.50
5,546.60 01/24/00 74.80 70.20
5,546.50 02/01/00 74.90 70.30
5,546.50 02/07/00 74.90 70.30
5,546.90 02/14/00 74.50 69.90
5,546.95 02/23/00 74.45 69.85
5,547.05 03/01/00 74.35 69.75
5,547.05 03/08/00 74.35 69.75
5,547.10 03/15/00 74.30 69.70
5,547.50 03/20/00 73.90 69.30
5,547.40 03/29/00 74.00 69.40
5,547.20 04/04/00 74.20 69.60
5,547.40 04/13/00 74.00 69.40
5,547.60 04/21/00 73.80 69.20
5,547.70 04/28/00 73.70 69.10
, 5,547.70 05/01/00 73.70 69.10
5,548.00 05/11/00 73.40 68.80
5,547.70 05/15/00 73.70 69.10
5,547.90 05/25/00 73.50 68.90
5,547.90 06/09/00 73.50 68.90
5,548.00 06/16/00 73.40 68.80
5,547.87 06/26/00 73.53 68.93
5,547.95 07/06/00 73.45 68.85
5,547.96 07/13/00 73.44 68.84
5,547.95 07/18/00 73.45 68.85
5,548.11 07/27/00 73.29 68.69
5,548.15 08/02/00 73.25 68.65
5,548.17 08/09/00 73.23 68.63
5,548.16 08/15/00 73.24 68.64
5,548.40 08/31/00 73.00 68.40
5,548.50 09/08/00 72.90 68.30
5,548.62 09/13/00 72.78 68.18
5,548.75 09/20/00 72.65 68.05
5,548.76 10/05/00 72.64 68.04
5,549.00 11/09/00 72.40 67.80
5,548.85 12/06/00 72.55 67.95
5,549.47 01/03/01 71.93 67.33
5,549.89 02/09/01 71.51 66.91
5,550.37 03/27/01 71.03 66.43
5,550.50 04/30/01 70.90 66.30
Water Levels and Data over Time
White Mesa Mill -Well TW4-8
Total or
Measuring Measured
Water Land Point Depth to Total Depth Total
Elevation Surface Elevation Length Of Date Of Water to Water Depth Of
(WL) (LSD) (MP) Riser (L) Monitoring (blw.MP) (blw.LSD) Well
5,616.80 5,621.40 4.60 126.2
5,550.68 05/31/01 70.72 66.12
5,550.68 06/20/01 70.72 66.12
5,551:02 07/10/01 70.38 65 .78
5,551.32 08/20/01 70.08 65.48
5,551.49 09/19/01 69.91 65.31
5,551.64 10/02/01 69.76 65.16
5,551.81 11/08/01 69.59 64.99
5,552.22 12/03/01 69.18 64.58
5,552.16 01/03/02 69.24 64.64
5,552.38 02/06/02 69.02 64.42
5,552.85 03/26/02 68.55 63 .95
5,552.83 04/09/02 68.57 63.97
5,553 .20 05/23/02 68.20 63.60
5,553.16 06/05/02 68.24 63 .64
5,553.32 07/08/02 68.08 63.48
5,553.49 08/23/02 67.91 63.31
5,553.69 09/11/02 67.71 63.11
5,554.09 10/23/02 67.31 62.71
5,554.02 11/22/02 67.38 62.78
5,554.23 12/03/02 67.17 62.57
5,554.43 01/09/03 66.97 62.37
5,554.42 02/12/03 66.98 62.38
5,554.71 03/26/03 66.69 62.09
5,554.83 04/02/03 66.57 61.97
5,552.21 05/01/03 69.19 64.59
5,547.93 06/09/03 73.47 68.87
5,546.97 07/07/03 74.43 69.83
5,546.58 08/04/03 74.82 70.22
5,546.24 09/11/03 75.16 70.56
5,546.38 10/02/03 75.02 70.42
5,546.40 11/07/03 75.00 70.40
5,546.59 12/03/03 74.81 70.21
5,551.29 01/15/04 70.11 65 .51
5,552.69 02/10/04 68.71 64.11
5,554.06 03/28/04 67.34 62.74
5,554.52 04/12/04 66.88 62.28
5,555.06 05/13/04 66.34 61.74
5,555.11 06/18/04 66.29 61.69
5,555.88 07/28/04 65.52 60.92
5,552.97 08/30/04 68.43 63 .83
5,550.65 09/16/04 70.75 66.15
5,548.40 10/11/04 73.00 68.40
5,548.28 11 /16/04 73.12 68.52
Water Levels and Data over Time
White Mesa Mill-Well TW4-8
Total or
Measuring Measured
Water Land Point Depth to Total Depth Total
Elevation Surface Elevation Length Of Date Of Water to Water Depth Of
(WL) (LSD) (MP) Riser (L) Monitoring (blw.MP) (blw.LSD) Well
5,616.80 5,621.40 4.60 126.2
5,548.80 12/22/04 72.60 68.00
5,548.43 01/18/05 72.97 68.37
5,548.61 02/28/05 72.79 68.19
5,548.64 03/15/05 72.76 68.16
5,548.65 04/26/05 72.75 68.15
5,548.85 05/24/05 72.55 67.95
5,548.73 06/30/05 72.67 68.07
5,548.62 07/29/05 72.78 68.18
5,548.80 09/12/05 72.60 68.00
5,548.71 12/07/05 72.69 68.09
5,549.72 03/08/06 71.68 67.08
5,549.70 06/13/06 71.70 67.10
5,549.70 07/18/06 71.70 67.10
5,549.65 11/07/06 71.75 67.15
5,551.11 02/27/07 70.29 65.69
5,550.20 05/02/07 71.20 66.60
5,550.59 08/14/07 70.81 66.21
5,550.76 10/10/07 70.64 66.04
5,551.95 03/26/08 69.45 64.85
5,552.36 06/24/08 69.04 64.44
5,552.50 08/26/08 68.90 64.30
5,552.56 10/14/08 68.84 64.24
5,552.91 03/03/09 68.49 63.89
5,553.27 06/24/09 68.13 63.53
5,553.12 09/10/09 68.28 63.68
5,553.63 12/11/09 67.77 63.17
5,554.65 03/11/10 66.75 62.15
5,554.57 05/11/10 66.83 62.23
5,554.34 09/29/10 67.06 62.46
5,554.09 12/21/10 67.31 62.71
5,554.50 02/28/11 66.9 62.30
5,554.79 06/21/11 66.61 62.01
5,554.63 09/20/11 66.77 62.17
5,555.01 12/21/11 66.39 61.79
5,554.85 03/27/12 66.55 61.95
5,554.90 06/28/12 66.5 61.90
5,554.85 09/27/12 66.55 61.95
5,554.86 12/28/12 66.54 61.94
5,556.48 03/28/13 64.92 60.32
5,556.35 06/27/13 65 .05 60.45
5,556.60 09/27/13 64.80 60.20
5,556.56 12/20/13 64.84 60.24
5,556.38 03/27/14 65.02 60.42
Water Levels and Data over Time
White Mesa Mill -Well TW4-8
Total or
Measuring Measured
Water Land Point Depth to Total Depth Total
Elevation Surface Elevation Length Of Date Of Water to Water Depth Of
(WL) (LSD) (MP) Riser (L) Monitoring (blw.MP) (blw.LSD) Well
5,616.80 5,621.40 4.60 126.2
5,555.56 06/25/14 65.84 61.24
5,554.82 09/25/14 66.58 61.98
5,554.95 12/17/14 66.45 61.85
5,546.89 03/26/15 74.51 69.91
5,547.80 06/22/15 73.60 69.00
5,544.84 09/30/15 76.56 71.96
5,540.22 12/02/15 81.18 76.58
5,542.00 03/30/16 79.40 74.80
5,542.10 06/30/16 79.30 74.70
5,541.70 09/29/16 79.70 75.10
5,539.90 12/21/16 81.50 76.90
5,541.70 03/30/17 79.70 75.10
5,542.19 06/27/17 79.21 74.61
5,540.58 09/28/17 80.82 76.22
5,538.52 11/30/17 82.88 78.28
5,537.95 03/28/18 83.45 78.85
5,537.73 06/22/18 83.67 79.07
5,537.38 09/25/18 84.02 79.42
5,536.86 12/17/18 84.54 79.94
5,536.30 03/25/19 85.10 80.50
5,536.67 06/24/19 84.73 80.13
5,536.82 08/12/19 84.58 79.98
5,536.37 11/18/19 85.03 80.43
5,535.53 02/10/20 85.87 81.27
5,535.25 05/04/20 86.15 81.55
5,535.49 09/22/20 85.91 81.31
5,534.69 12/30/20 86.71 82.11
5,534.92 03/11/21 86.48 81.88
5,534.82 06/24/21 86.58 81.98
5,536.12 08/13/21 85.28 80.68
5,534.94 12/30/21 86.46 81.86
5,535.76 02/10/22 85.64 81.04
5,534.80 06/28/22 86.60 82.00
5,535.98 08/15/22 85.42 80.82
5,535.89 11/17/22 85.51 80.91
5,536.04 03/24/23 85.36 80.76
5,536.13 06/26/23 85.27 80.67
-0 0
/
\0 0 00 0
Depth Below Measuring Point (ft.)
-.J 0 0\ 0
V,
0 ~ 0 w
0 tv 0 0 0
11/29/99
04/27/00
09/24/00
02/21/01
,-07/21/01
12/18/01
-05/17/02
10/14/02
03/13/03
08/10/03
01/07/04
,_ 06/05/04
11/02/04
04/01/05
08/29/05
-01/26/06
06/25/06 ~ 11/22/06
04/21/07 ~
09/18/07 ~ I -02/15/08 00
07/14/08 ~ ,.. 12/11/08
05/10/09 .....
"" 10/07/09 ~ .,
03/06/10 ~ 08/03/10 ~
-12/31/10 "C ..... ""05/30/11 =-10/27/11 0 03/25/12 < 08/22/12 ~
-01/19/13
.,
~ -06/18/13 ...
11/15/13 a 04/14/14 ~
09/11/14 -,.. 02/08/15 ?
07/08/15 'a'
12/05/15 -a 05/03/16 "C 09/30/16 -02/27/17
07/27/17
12/24/17
05/23/18
10/20/18
03/19/19
08/16/19
01/13/20
06/11/20
11/08/20
04/07/21
09/04/21
02/01/22
07/01/22
11/28/22
04/27/23
09/24/23
02/21/24
07/20/24
12/17/24
Water Levels and Data over Time
White Mesa Mill -Well TW 4-9
Total or
Measuring Measured Total
Water Land Point Depth to Depth to Total
Elevation Surface Elevation Length Of Date Of Water Water Depth Of
(WL) (LSD) (MP) Riser (L) Monitoring (blw.MP) (blw.LSD) Well
5,636.11 5,637.59 1.48 120.1
5,577.09 12/20/99 60.50 59.02
5,577.09 01/02/00 60.50 59.02
5,577.29 01/10/00 60.30 58.82
5,577.09 01/17/00 60.50 59.02
5,577.39 01/24/00 60.20 58.72
5,577.29 02/01/00 60.30 58.82
5,577.19 02/07/00 60.40 58.92
5,577.69 02/14/00 59.90 58.42
5,577.69 02/23/00 59.90 58.42
5,577.79 03/01/00 59.80 58.32
5,577.79 03/08/00 59.80 58.32
5,577.89 03/15/00 59.70 58.22
5,568.49 03/20/00 69.10 67.62
5,578.14 03/29/00 59.45 57.97
5,577.84 04/04/00 59.75 58.27
5,578.04 04/13/00 59.55 58.07
5,578.24 04/21/00 59.35 57.87
5,578.39 04/28/00 59.20 57.72
5,578.39 05/01/00 59.20 57.72
5,578.79 05/11/00 58.80 57.32
5,578.39 05/15/00 59.20 57.72
5,578.79 05/25/00 58.80 57.32
5,578.81 06/09100 58.78 57.30
5,578.89 06/16/00 58.70 57.22
5,578.74 06/26/00 58.85 57.37
5,578.86 07/06/00 58.73 57.25
5,578.87 07/13/00 58.72 57.24
5,578.84 07/18/00 58.75 57.27
5,579.03 07/27/00 58.56 57.08
5,579.03 08/02/00 58.56 57.08
5,579.05 08/09/00 58.54 57.06
5,579.04 08/15/00 58.55 57.07
5,579.25 08/31/00 58.34 56.86
5,579.35 09/08/00 58.24 56.76
5,579.40 09/13/00 58.19 56.71
5,579.46 09/20/00 58.13 56.65
5,579.44 10/05/00 58.15 56.67
5,579.79 11/09/00 57.80 56.32
5,579.73 12/06/00 57.86 56.38
5,580.01 01/03/01 57.58 56.10
5,580.30 02/09/01 57.29 55 .81
5,580.66 03/27/01 56.93 55.45
5,580.75 04/30/01 56.84 55.36
Water Levels and Data over Time
White Mesa Mill -Well TW 4-9
Total or
Measuring Measured Total
Water Land Point Depth to Depth to Total
Elevation Surface Elevation Length Of Date Of Water Water Depth Of
(WL) (LSD) (MP) Riser (L) Monitoring (blw.MP) (blw.LSD) Well
5,636.11 5,637.59 1.48 120.1
5,581.04 05/3 1/01 56.55 55.07
5,581.12 06/21/01 56.47 54.99
5,581.15 07/1 0/01 56.44 54.96
5,581.51 08/20/01 56.08 54.60
5,581.70 09/19/01 55.89 54.41
5,581.61 10/02/01 55.98 54.50
5,581.83 1 l/08/01 55.76 54.28
5,582.17 12/03/01 55.42 53.94
5,582.21 01/03/02 55.38 53.90
5,582.57 02/06/02 55.02 53.54
5,583.12 03/26/02 54.47 52.99
5,582.77 04/09/02 54.82 53.34
5,583.21 05/23 /02 54.38 52.90
5,582.94 06/05/02 54.65 53.17
5,582.71 07/08/02 54.88 53.40
5,583.67 08/23/02 53.92 52.44
5,583.82 09/11/02 53.77 52.29
5,584.01 10/23/02 53.58 52.10
5,583.88 11/22/02 53.71 52.23
5,583.81 12/03/02 53.78 52.30
5,584.28 01 /09/03 53.31 51 .83
5,584.41 02/12/03 53.18 51.70
5,584.68 03 /26/03 52.91 51.43
5,584.49 04/02/03 53.10 51.62
5,584.51 05/01/03 53.08 51 .60
5,583.59 06/09/03 54.00 52.52
5,582.96 07/07/03 54.63 53.15
5,582.98 08/04/03 54.61 53.13
5,582.57 09/11 /03 55.02 53.54
5,582.25 10/02/03 55.34 53.86
5,582.09 11/07/03 55.50 54.02
5,582.48 12/03/03 55.11 53 .63
5,583.69 01/15/04 53.90 52.42
5,583.89 02/10/04 53.70 52.22
5,584.30 03/28/04 53.29 51.81
5,584.59 04/12/04 53.00 51 .52
5,584.87 05/13/04 52.72 51.24
5,584.96 06/18/04 52;63 51.15
5,585.50 07/28/04 52.09 50.61
5,584.81 08/30/04 52.78 51.30
5,584.40 09/16/04 53 .19 51.71
5,583 .91 10/11/04 53 .68 52.20
5,583.39 11/16/04 54.20 52.72
Water Levels and Data over Time
White Mesa Mill -Well TW 4-9
Total or
Measuring Measured Total
Water Land Point Depth to Depth to Total
Elevation Surface Elevation Length Of Date Of Water Water Depth Of
(WL) (LSD) (MP) Riser (L) Monitorin~ (blw.MP) (blw.LSD) Well
5,636.11 5,637.59 1.48 120.1
5,583.54 12/22/04 54.05 52.57
5,583.34 01/18/05 54.25 52.77
5,583.66 02/28/05 53.93 52.45
5,583.87 03/15/05 53.72 52.24
5,584.74 04/26/05 52.85 51.37
5,585.26 05/24/05 52.33 50.85
5,585.06 06/30/05 52.53 51.05
5,584.67 07/29/05 52.92 51.44
5,584.75 09/12/05 52.84 51.36
5,584.51 12/07/05 53 .08 51 .60
5,585.74 03/08/06 51.85 50.37
5,584.74 06/13/06 52.85 51.37
5,584.26 07/18/06 53.33 51.85
5,584.21 11/07/06 53.38 51.90
5,584.67 02/27/07 52.92 51.44
5,584.06 05/02/07 53.53 52.05
5,585.33 08/14/07 52.26 50.78
5,585.42 10/10/07 52.17 50.69
5,587.01 03 /26/08 50.58 49.10
5,585.44 06/24/08 52.15 50.67
5,585.23 08/26/08 52.36 50.88
5,584.42 10/14/08 53.17 51.69
5,583.59 03/03/09 54.00 52 .52
5,583.35 06/24/09 54.24 52.76
5,582.91 09/10/09 54.68 53.20
5,583.43 12/11/09 54.16 52.68
5,584.00 03/11/10 53.59 52.11
5,583.27 05/11/10 54.32 52.84
5,582.92 09/29/10 54.67 53 .19
5,583.08 12/21/10 54.51 53 .03
5,582.63 02/28/11 54.96 53.48
5,583 .62 06/21/11 53.97 52.49
5,583.52 09/20/11 54.07 52.59
5,583.91 12/21/11 53.68 52.20
5,582.84 03/27/12 54.75 53.27
5,582.84 06/28/12 54.75 53.27
5,582.92 09/27/12 54.67 53.19
5,582.84 12/28/12 54.75 53.27
5,581.97 03/28/13 55.62 54.14
5,581.19 06/27/13 56.40 54.92
5,580.50 09/27/13 57.09 55.61
5,579.73 12/20/13 57.86 56.38
5,578.61 03/27/14 58.98 57.50
Water Levels and Data over Time
White Mesa Mill -Well TW 4-9
Total or
Measuring Measured Total
Water Land Point Depth to Depth to Total
Elevation Surface Elevation Length Of Date Of Water Water Depth Of
(WL) (LSD) (MP) Riser (L) Monitoring (blw.MP) (blw.LSD) Well
5,636.11 5,637.59 1.48 120.1
5,577.24 06/25/14 60.35 58.87
5,576.24 09/25/14 61.35 59.87
5,576.44 12/17/14 61.15 59.67
5,576.35 03/26/15 61.24 59.76
5,576.48 06/22/15 61.11 59.63
5,575.98 09/30/15 61.61 60.13
5,575.41 12/02/15 62.18 60.70
5,575.38 03/30/16 62.21 60.73
5,574.74 06/30/16 62.85 61.37
5,574.26 09/29/16 63.33 61.85
5,573.88 12/21/16 63.71 62.23
5,573.99 03/30/17 63.60 62.12
5,573.49 06/27/17 64.10 62.62
5,573.05 09/28/17 64.54 63.06
5,572.34 11/30/17 65.25 63.77
5,574.97 03/28/18 62.62 61.14
5,571.69 06/22/18 65.90 64.42
5,571.20 09/25/18 66.39 64.91
5,570.92 12/17/18 66.67 65.19
5,570.16 03/25/19 67.43 65.95
5,570.17 06/24/19 67.42 65.94
5,570.01 08/12/19 67.58 66.10
5,569.66 11/18/19 67.93 66.45
5,569.38 02/10/20 68.21 66.73
5,569.04 05/04/20 68.55 67.07
5,568.30 09/22/20 69.29 67.81
5,568.12 12/30/20 69.47 67.99
5,568.18 03/11/21 69.41 67.93
5,567.66 06/24/21 69.93 68.45
5,567.54 08/13/21 70.05 68.57
5,567.77 12/30/21 69.82 68.34
5,567.12 02/10/22 70.47 68.99
5,567.68 06/28/22 69.91 68.43
5,566.83 08/15/22 70.76 69.28
5,566.66 11/17/22 70.93 69.45
5,566.20 03/24/23 71.39 69.91
5,566.31 06/26/23 71.28 69.8
-.J u,
0 0
-.J 0 a 0
Depth Below Measuring Point (ft.)
a, u, a 0
a,
0 a 0
u, V, a 0
u, 0 a 0
✓0,
'2-, ..9..9
{, ?, '2-, Oo
<0,
'2-, O.,1
✓0,
'2-, o.?
✓0, q,, 0_;
✓0,
'2-, o,,.
✓0, q,, -t O,.s-
✓0, :E
q,, .i:=. 06' I
\.0
✓0, :E q,, o> CJ r+ ✓ t1) 0, ., q,, ocl' C
✓0, t1)
"C q,, r+ O-9 :::r
✓0, 0 ~ c:: -<o t1)
✓0, .,
~ ~ -✓✓ 3 <,c> ?, t1) ~ -✓,? ;::f:' ✓ 0, CT ~ -<.;
3 ✓0, "C ~ -✓,,.
✓0,
~ -<s
✓0,
~ ✓6'
✓0,
~ -<>
✓0,
~ ✓cl'
✓0,
~ -<-9
✓0,
~ '"'o
✓0,
'½✓
✓0,
~
'°'"'
Water Levels and Data over Time
White Mesa Mill -Well TW 4-10
Total or
Measuring Measured Total
Water Land Point Length Depth to Depth to Total
Elevation Surface Elevation Of Riser Date Of Water Water Depth Of
(WL) (LSD) (MP) (L) Monitoring (blw.MP) (blw.LSD) Well
5,631.99 5,634.24 2.25 113.2
5,576.75 01/03/02 57.49 55.24
5,576.92 02/06/02 57.32 55.07
5,577.43 03/26/02 56.81 54.56
5,577.22 04/09/02 57.02 54.77
5,577.80 05/23/02 56.44 54.19
5,577.47 06/05/02 56.77 54.52
5,577.55 07/08/02 56.69 54.44
5,578.10 08/23/02 56.14 53.89
5,578.24 09/11/02 56.00 53.75
5,578.49 10/23/02 55.75 53.50
5,578.43 11/22/02 55.81 53.56
5,578.43 12/03/02 55.81 53.56
5,578.66 01/09/03 55.58 53.33
5,578.66 02/12/03 55.58 53.33
5,578.78 03/26/03 55.46 53.21
5,578.90 04/02/03 55.34 53.09
5,578.83 05/01/03 55.41 53.16
5,578.05 06/09/03 56.19 53.94
5,577.38 07/07/03 56.86 54.61
5,,577.15 08/04/03 57.09 54.84
5,576.76 09/11/03 57.48 55.23
5,576.36 10/02/03 57.88 55.63
5,576.05 11/07/03 58.19 55.94
5,576.20 12/03/03 58.04 55.79
5,577.43 01/15/04 56.81 54.56
5,577.81 02/10/04 56.43 54.18
5,578.47 03/28/04 55.77 53.52
5,578.69 04/12/04 55.55 53.30
5,578.93 05/13/04 55.31 53.06
5,578.99 06/18/04 55.25 53.00
5,579.18 07/28/04 55.06 52.81
5,579.06 08/30/04 55.18 52.93
5,578.78 09/16/04 55.46 53.21
5,577.80 10/11/04 56.44 54.19
5,577.13 11/16/04 57.11 54.86
5,576.96 12/22/04 57.28 55.03
5,576.63 01/18/05 57.61 55.36
5,576.82 02/28/05 57.42 55.17
5,576.86 03/15/05 57.38 55.13
5,577.52 04/26/05 56.72 54.47
5,578.01 05/24/05 56.23 53.98
5,578.15 06/30/05 56.09 53.84
5,577.90 07/29/05 56.34 54.09
Water Levels and Data over Time
White Mesa Mill -Well TW 4-10
Total or
Measuring Measured Total
Water Land Point Length Depth to Depth to Total
Elevation Surface Elevation Of Riser Date Of Water Water Depth Of
(WL) (LSD) (MP) (L) Monitoring (blw.MP) (blw.LSD) Well
5,631.99 5,634.24 2.25 113.2
5,578.02 09/12/05 56.22 53.97
5,577.56 12/07/05 56.68 54.43
5,579.69 03/08/06 54.55 52.30
5,578.34 06/13/06 55.90 53.65
5,577.94 07/18/06 56.30 54.05
5,578.01 11/07/06 56.23 53.98
5578.43 02/27/07 55.81 53.56
5,577.84 05/02/07 56.40 54.15
5,578.74 08/14/07 55.50 53.25
5,579.04 10/10/07 55.20 52.95
5,580.69 03/26/08 53.55 51.30
5,579.87 06/24/08 54.37 52.12
5,579.47 08/26/08 54.77 52.52
5,578.87 10/14/08 55.37 53.12
5,578.01 03/10/09 56.23 53.98
5,577.85 06/24/09 56.39 54.14
5,577.49 09/10/09 56.75 54.50
5,577.98 12/11/09 56.26 54.01
5,578.38 03/11/10 55.86 53.61
5,578.16 05/11/10 56.08 53.83
5,577.85 09/29/10 56.39 54.14
5,577.28 12/21/10 56.96 54.71
5,577.14 02/28/11 57.10 54.85
5,578.09 06/21/11 56.15 53.90
5,578.24 09/20/11 56.00 53.75
5,578.74 12/21/11 55.50 53.25
5,577.89 03/27/12 56.35 54.10
5,577.90 06/28/12 56.34 54.09
5,578.29 09/27/12 55.95 53.70
5,577.87 12/28/12 56.37 54.12
5,577.92 03/28/13 56.32 54.07
5,577.19 06/27/13 57.05 54.80
5,576.77 09/27/13 57.47 55.22
5,576.22 12/20/13 58.02 55.77
5,575.36 03/27/14 58.88 56.63
5,574.11 06/25/14 60.13 57.88
5,573.19 09/25/14 61.05 58.80
5,573.19 12/17/14 61.05 58.80
5,573.12 03/26/15 61.12 58.87
5,573.33 06/22/15 60.91 58.66
5,572.98 09/30/15 61.26 59.01
5,572.39 12/02/15 61.85 59.60
5,572.64 03/30/16 61.60 59.35
Water Levels and Data over Time
White Mesa Mill -Well TW 4-10
Total or
Measuring Measured Total
Water Land Point Length Depth to Depth to Total
Elevation Surface Elevation Of Riser Date Of Water Water Depth Of
(WL) (LSD) (MP) (L) Monitoring (blw.MP) (blw.LSD) Well
5,631.99 5,634.24 2.25 113.2
5,571.79 06/30/16 62.45 60.20
5,571.27 09/29/16 62.97 60.72
5,570.94 12/21/16 63.30 61.05
5,571.09 03/30/17 63.15 60.90
5,570.59 06/27/17 63.65 61.40
5,570.12 09/28/17 64.12 61.87
5,569.42 11/30/17 64.82 62.57
5,569.06 03/28/18 65.18 62.93
5,568.81 06/22/18 65.43 63.18
5,568.33 09/25/18 65.91 63.66
5,568.08 12/17/18 66.16 63.91
5,567.33 03/25/19 66.91 64.66
5,567.39 06/24/19 66.85 64.60
5,567.21 08/12/19 67.03 64.78
5,566.88 11/18/19 67.36 65.11
5,566.61 02/10/20 67.63 65.38
5,566.27 05/04/20 67.97 65.72
5,565.53 09/22/20 68.71 66.46
5,565.33 12/30/20 68.91 66.66
5,565.46 03/11/21 68.78 66.53
5,564.86 06/24/21 69.38 67.13
5,564.89 08/13/21 69.35 67.10
5,565.05 12/30/21 69.19 66.94
5,564.41 02/10/22 69.83 67.58
5,564.82 06/28/22 69.42 67.17
5,564.09 08/15/22 70.15 67.90
5,563.87 11/17/22 70.37 68.12
5,563.52 03/24/23 70.72 68.47
5,563.54 06/26/23 70.70 68.45
00 0
-..)
0 0\ 0
Depth Below Measuring Point (ft.)
Vl
0
.j:s.
0
w
0 N 0 -0 0
01/03/02
06/02/02
10/30/02
03/29/03
08/26/03
01/23/04
06/21/04
11/18/04
04/17/05
09/14/05
02/11/06
07/11/06
12/08/06
05/07/07
10/04/07
03/02/08 ~
07/30/08 ~
12/27/08 ,&;..
I
05/26/09 """" 10/23/09 0
03/22/10 ~ 08/19/10 .....
01/16/11 ~ '"'I
06/15/11 0 11/12/11 ~
-04/10/12 "'C .....
09/07/12 =-
02/04/13 0
07/04/13 < ~
-12/01/13 '"'I
04/30/14 ~ -· -09/27/14 9
02/24/15 ~
07/24/15 -12/21/15 ~
05/19/16 O"' --10/16/16 9
03/15/17 "'C _,
08/12/17
01/09/18
06/08/18
-11/05/18
04/04/19
-09/01/19
01/29/20
06/27/20
11/24/20
-04/23/21
09/20/21
02/17/22
07/17/22
-12/14/22
05/13/23
10/10/23
03/08/24
08/05/24
Water Levels and Data over Time
White Mesa Mill -Well TW 4-11
Total or
Measuring Measured Total
Water Land Point Depth to Depth to Total
Elevation Surface Elevation Length Of Date Of Water Water Depth Of
(WL) (LSD) (MP) Riser (L) Monitoring (blw.MP) (blw.LSD) Well
5,621.92 5,623.62 1.70 102.4
5,548.32 01/03/02 75 .30 73.60
5,548.73 02/06/02 74.89 73.19
5,549.03 03/26/02 74.59 72.89
5,548.84 04/09/02 74.78 73.08
5,549.30 05/23/02 74.32 72.62
5,549.01 06/05/02 74.61 72.91
5,549.22 07/08/02 74.40 72.70
5,549.44 08/23 /02 74.18 72.48
5,549.57 09/11 /02 74.05 72.3 5
5,549.64 10/23/02 73 .98 72.28
5,549.58 11/22/02 74.04 72.34
5,549.62 12/03/02 74.00 72.30
5,549.85 01/09/03 73.77 72.07
5,549.91 02/12/03 73.71 72.01
5,550.15 03/26/03 73.47 71.77
5,550.01 04/02/03 73.61 71.91
5,550.31 05/01/03 73.31 71.61
5,550.44 06/09/03 73.18 71.48
5,550.33 07/07/03 73.29 71.59
5,550.35 08/04/03 73 .27 71.57
5,550.44 09/11/03 73 .18 71.48
5,550.47 10/02/03 73.15 71.45
5,550.60 11/07/03 73.02 71.32
5,550.60 12/03/03 73.02 71.32
5,550.94 01/15/04 72.68 70.98
5,551.00 02/10/04 72.62 70.92
5,550.34 03/28/04 73.28 71.58
5,551.54 04/12/04 72.08 70.38
5,551.89 05/13/04 71.73 70.03
5,551.94 06/18/04 71.68 69.98
5,552.49 07/28/04 71.13 69.43
5,552.74 08/30/04 70.88 69.18
5,553.01 09/16/04 70.61 68.91
5,553.11 I0/11/04 70.51 68.81
5,553.19 11/16/04 70.43 68.73
5,553.53 12/22/04 70.09 68.39
5,553.31 01/18/05 70.31 68.61
5,553.84 02/28/05 69.78 68.08
5,554.04 03/15/05 69.58 67.88
5,554.23 04/26/05 69.39 67.69
5,553.87 05/24/05 69.75 68.05
5,554.46 06/30/05 69.16 67.46
5,554.57 07/29/05 69.05 67.35
Water Levels and Data over Time
White Mesa Mill -Well TW 4-11
Total or
Measuring Measured Total
Water Land Point Depth to Depth to Total
Elevation Surface Elevation Length Of Date Of Water Water Depth Of
(WL) (LSD) (MP) Riser (L) Monitoring (blw.MP) (blw.LSD) Well
5,621.92 5,623.62 1.70 102.4
5,553.86 09/12/05 69.76 68.06
5,555.30 12/07/05 68.32 66.62
5,556.20 03/08/06 67.42 65.72
5,556.48 06/14/06 67.14 65.44
5,556.37 07/18/06 67.25 65.55
5,556.94 11/07/06 66.68 64.98
5557.92 02/27/07 65.70 64.00
5,557.84 05/02/07 65.78 64.08
5,558.02 08/15/07 65.60 63.90
5,557.13 10/10/07 66.49 64.79
5,569.74 03/26/08 53.88 52.18
5,561.01 06/24/08 62.61 60.91
5,562.07 08/26/08 61.55 59.85
5,562.47 10/14/08 61.15 59.45
5,563.80 03/10/09 59.82 58.12
5,564.27 06/24/09 59.35 57.65
5,564.32 09/10/09 59.30 57.60
5,564.70 12/11/09 58.92 57.22
5,565.14 03/11/10 58.48 56.78
5,565.61 05/11/10 58.01 56.31
5,565.67 09/29/10 57.95 ·• 56.25
5,565.62 12/21/10 58.00 56.30
5,565.42 02/28/11 58.20 56.50
5,566.01 06/21/11 57.61 55.91
5,566.03 09/20/11 57.59 55.89
5,566.63 12/21/11 56.99 55 .29
5,565.81 03/27/12 57.81 56.11
5,565.82 06/28/12 57.80 56.10
5,566.66 09/27/12 56.96 55.26
5,565.77 12/28/12 57.85 56.15
5,566.89 03/28/13 56.73 55.03
5,566.32 06/27/13 57.30 55.60
5,565.92 09/27/13 57.70 56.00
5,565.63 12/20/13 57.99 56.29
5,565.03 03/27/14 58.59 56.89
5,564.18 06/25/14 59.44 57.74
5,563.52 09/25/14 60.10 58.40
5,563.37 12/17/14 60.25 58.55
5,532.62 03/26/15 91.00 89.30
5,527.07 06/22/15 96.55 94.85
5,533.27 09/30/15 90.35 88.65
5,532.67 12/02/15 90.95 89.25
5,531.44 03/30/16 92.18 90.48
Water Levels and Data over Time
White Mesa Mill -Well TW 4-11
Total or
Measuring Measured Total
Water Land Point Depth to Depth to Total
Elevation Surface Elevation Length Of Date Of Water Water Depth Of
(WL) (LSD) (MP) Riser (L) Monitorin~ (blw.MP) (blw.LSD) Well
5,621.92 5,623.62 1.70 102.4
5,529.85 06/30/16 93.77 92.07
5,530.64 09/29/16 92.98 91 .28
5,530.61 12/21/16 93.01 91.31
5,538.48 03/30/17 85.14 83.44
5,529.93 06/27/17 93.69 91.99
5,530.41 09/28/17 93.21 91 .51
5,531.26 11/30/17 92.36 90.66
5,530.28 03/28/18 93.34 91.64
5,530.36 06/22/18 93.26 91 .56
5,530.41 09/24/18 93.21 91 .51
5,531.96 12/17/18 91.66 89.96
5,532.84 03/25/19 90.78 89.08
5,533.62 06/24/19 90.00 88 .30
5,532.49 08/12/19 91.13 89.43
5,532.50 11/18/19 91.12 89.42
5,533.60 02/10/20 90.02 88.32
5,533.02 05/04/20 90.60 88 .90
5,530.54 09/21/20 93.08 91.38
5,533.51 12/28/20 90.11 88.41
5,533.54 03/1 1/21 90.08 88.38
5,534.12 06/24/21 89.50 87.80
5,533.72 08/13/21 89.90 88 .20
5,533.62 12/30/21 90.00 88 .30
5,533.51 02/10/22 90.11 88.41
5,534.08 06/28/22 89.54 87 .84
5,533.84 08/15/22 89.78 88.08
5,533.21 11/17/22 90.41 88.71
5,524.87 03/24/23 98.75 97 .05
5,533.87 06/26/23 89.75 88 .05
Depth Below Measuring Point (ft.)
...... ...... ...... 0 \0 00 -J Cl\ Vl
0 0 0 0 0 0 0
01/03/02
06/02/02
10/30/02
03/29/03
08/26/03
01/23/04
06/21/04
11/18/04
04/17/05
09/14/05
02/11/06
07/11/06
12/08/06
05/07/07
10/04/07 ~ 03/02/08
07/30/08 ~
12/27/08 ~ I
05/26/09 i,,-i.
i,,-i.
10/23/09 ~ 03/22/10
08/19/10 -~ 1-01/16/11 '"t
1-06/15/11 t::,
-11/12/11 ~ '"CS -04/10/12 --09/07/12 =-
-02/04/13 0 < -07/04/13 ~
-12/01/13 '"t
04/30/14 ~ ....
09/27/14 a
02/24/15 ~ -07/24/15 ? 12/21/15 O"' 05/19/16 -10/16/16 a
03/15/17 '"CS --08/12/17
,-01/09/18
06/08/18
11/05/18
04/04/19
09/01/19
01/29/20
06/27/20
11/24/20
04/23/21
09/20/21
02/17/22
07/17/22
12/14/22
05/13/23
10/10/23
03/08/24
08/05/24
Water Levels and Data over Time
White Mesa Mill -Well TW 4-12
Total or
Measuring Measured Total
Water Land Point Depth to Depth to Total
Elevation Surface Elevation Length Of Date Of Water Water Depth Of
(WL) (LSD) (MP) Riser (L) Monitoring {blw.MP) (blw.LSD) Well
5,622.38 5,624.23 1.85 103.2
5,580.91 08/23/02 43.32 41.47
5,581.54 09/11/02 42.69 40,84
5,581.33 10/23/02 42.90 41.05
5,581.47 11/22/02 42.76 40.91
5,581.55 12/03/02 42.68 40.83
5,582.58 01/09/03 41.65 39.80
5,582.47 02/12/03 41.76 39.91
5,582.71 03/26/03 41.52 39.67
5,582.11 04/02/03 42.12 40.27
5,582.92 05/01/03 41.31 39.46
5,583.13 06/09/03 41.10 39.25
5,583.21 07/07/03 41.02 39.17
5,583.31 08/04/03 40.92 39.07
5,583.55 09/11/03 40.68 38.83
5,583.72 10/02/03 40.51 38.66
5,583.77 11/07/03 40.46 38.61
5,584.01 12/03/03 40.22 38.37
5,584.37 01/15/04 39.86 38.01
5,584.39 02/10/04 39.84 37.99
5,584.51 03/28/04 39.72 37.87
5,584.90 04/12/04 39.33 37.48
5,584.88 05/13/04 39.35 37.50
5,584.93 06/18/04 39.30 37.45
5,585.36 07/28/04 38.87 37.02
5,585.38 08/30/04 38.85 37.00
5,585.49 09/16/04 38.74 36.89
5,585.85 10/11/04 38.38 36.53
5,585.91 11/16/04 38.32 36.47
5,586.35 12/22/04 37.88 36.03
5,586.14 01/18/05 38.09 36.24
5,586.56 02/28/05 37.67 35.82
5,586.95 03/15/05 37.28 35.43
5,587.20 04/26/05 37.03 35.18
5,587.35 05/24/05 36.88 35.03
5,587.58 06/30/05 36.65 34.80
5,587.58 07/29/05 36.65 34.80
5,587.94 09/12/05 36.29 34.44
5,588.43 12/07/05 35.80 33.95
5,588.92 03/08/06 35.31 33.46
5,588.34 06/13/06 35.89 34.04
5,588.33 07/18/06 35.90 34.05
5,584.70 11/07 /06 39.53 37.68
5588.85 02/27/07 35.38 33.53
Water Levels and Data over Time
White Mesa Mill -Well TW 4-12
Total or
Measuring Measured Total
Water Land Point Depth to Depth to Total
Elevation Surface Elevation Length Of Date Of Water Water Depth Of
(WL) (LSD) (MP) Riser (L) Monitoring (blw.MP) (blw.LSD) Well
5,622.38 5,624.23 1.85 103.2
5,588.53 05/02/07 35.70 33.85
5,586.49 08/14/07 37.74 35.89
5,586.68 10/10/07 37.55 35.70
5,587.76 03/26/08 36.47 34.62
5,587.59 06/24/08 36.64 34.79
5,587.35 08/26/08 36.88 35.03
5,586.84 10/14/08 37.39 35.54
5,586.17 03/03/09 38.06 36.21
5,585.74 06/24/09 38.49 36.64
5,585.54 09/10/09 38.69 36.84
5,585.77 12/11/09 38.46 36.61
5,585.88 03/11/10 38.35 36.50
5,586.35 05/11/10 37.88 36.03
5,585.68 09/29/10 38.55 36.70
5,585.09 12/21/10 39.14 37.29
5,584.65 02/28/11 39.58 37.73
5,584.76 06/21/11 39.47 37.62
5,584.32 09/20/11 39.91 38.06
5,584.22 12/21/11 40.01 38.16
5,577.07 03/27/12 47.16 45.31
5,577.05 06/28/12 47.18 45.33
5,583.14 09/27/12 41.09 39.24
5,577.10 12/28/12 47.13 45.28
5,582.71 03/28/13 41.52 39.67
5,582.25 06/27/13 41.98 40.13
5,582.24 09/27/13 41.99 40.14
5,582.12 12/20/13 42.11 40.26
5,581.67 03/27/14 42.56 40.71
5,581.03 06/25/14 43.20 41.35
5,580.49 09/25/14 43.74 41.89
5,580.33 12/17/14 43.90 42.05
5,579.28 03/26/15 44.95 43.10
5,579.23 06/22/15 45.00 43.15
5,578.87 09/30/15 45.36 43.51
5,578.53 12/02/15 45.70 43.85
5,578.53 03/30/16 45.70 43.85
5,578.03 06/30/16 46.20 44.35
5,577.54 09/29/16 46.69 44.84
5,577.27 12/21/16 46.96 45.11
5,577.00 03/30/17 47.23 45.38
5,576.59 06/27/17 47.64 45.79
5,576.00 09/28/17 48.23 46.38
5,575.27 11/29/17 48.96 47.11
Water Levels and Data over Time
White Mesa Mill -Well TW 4-12
Total or
Measuring Measured Total
Water Land Point Depth to Depth to Total
Elevation Surface Elevation Length Of Date Of Water Water Depth Of
(WL) (LSD) (MP) Riser (L) Monitoring (blw.MP) (blw.LSD) Well
5,622.38 5,624.23 1.85 103.2
5,573.64 03/28/18 50.59 48.74
5,572.58 06/22/18 51.65 49.80
5,571.91 09/25/18 52.32 50.47
5,571.49 12/17/18 52.74 50.89
5,570.77 03/25/19 53.46 51.61
5,570.78 06/24/19 53.45 51.60
5,570.54 08/12/19 53.69 51.84
5,570.06 11/18/19 54.17 52.32
5,570.02 02/10/20 54.21 52.36
5,569.45 05/04/20 54.78 52.93
5,569.03 09/22/20 55.20 53.35
5,568.91 12/30/20 55.32 53.47
5,568.99 03/11/21 55.24 53.39
5,568.44 06/24/21 55.79 53.94
5,568.35 08/13/21 55.88 54.03
5,568.70 12/30/21 55.53 53.68
5,567.90 02/10/22 56.33 54.48
5,568.45 06/28/22 55.78 53.93
5,567.92 08/15/22 56.31 54.46
5,567.68 11/17/22 56.55 54.70
5,567.92 03/24/23 56.31 54.46
5,567.53 06/26/23 56.70 54.85
VI
\0
VI _.,.
Depth Below Measuring Point (ft.)
_.,.
\0
_.,. _.,. w
\0
w _.,.
08/23/02
01/20/03
06/19/03
11/16/03
04/14/04
09/11/04
02/08/05
07/08/05
12/05/05
05/04/06
10/01/06
02/28/07
07/28/07
12/25/07
-05/23/08 ~ -10/20/08 ~ 03/19/09 -,;:..
08/16/09 I
lo-" -01/13/10 N
-06/12/10 ~ -11/09/10
-04/08/11 ..... ~
09/05/11 '"'I
-02/02/12 ~ ~ 07/01/12 "'C
-11/28/12 ..... =--04/27/13 0 -09/24/13 -<
-02/21/14 ~
'"'I
-07/21/14 ~
-12/18/14 ...
= 05/17/15 ~
10/14/15 -03/12/16 ~
-08/09/16 i::::r --01/06/17 = 06/05/17 "'C
-11/02/17 --
-04/01/18
-08/29/18
-01/26/19
06/25/19
-11/22/19
04/20/20
-09/17/20
02/14/21
-07/14/21
-12/11/21
05/10/22
10/07/22
-03/06/23
-08/03/23
12/31/23
-05/29/24
10/26/24
Water Levels and Data over Time
White Mesa Mill -Well TW 4-13
Total or
Measuring Measured Total
Water Land Point Depth to Depth to Total
Elevation Surface Elevation Length Of Date Of Water Water Depth Of
(WL) (LSD) (MP) Riser (L) Monitoring (blw.MP) (blw.LSD) Well·
5,618.09 5,619.94 1.85 105.7
5,529.66 08/23/02 90.28 88.43
5,530.66 09/11/02 89.28 87.43
5,529.10 10/23/02 90.84 88.99
5,530.58 11/22/02 89.36 87.51
5,530.61 12/03/02 89.33 87.48
5,529.74 01/09/03 90.20 88.35
5,531.03 02/12/03 88.91 87.06
5,531.82 03/26/03 88.12 86.27
5,524.63 04/02/03 95.31 93.46
5,531.54 05/01/03 88.40 86.55
5,538.46 06/09/03 81.48 79.63
5,539.38 07/07/03 80.56 78.71
5,540.72 08/04/03 79.22 77.37
5,541.25 09/11/03 78.69 76.84
5,541.34 10/02/03 78.60 76.75
5,541.69 11/07/03 78.25 76.40
5,541.91 12/03/03 78.03 76.18
5,542.44 01/15/04 77.50 75.65
5,542.47 02/10/04 77.47 75.62
5,542.84 03/28/04 77.10 75.25
5,543.08 04/12/04 76.86 75.01
5,543.34 05/13/04 76.60 74.75
5,543.40 06/18/04 76.54 74.69
5,544.06 07/28/04 75.88 74.03
5,544.61 08/30/04 75.33 73.48
5,545.23 09/16/04 74.71 72.86
5,546.20 10/11/04 73.74 71.89
5,547.43 11/16/04 72.51 70.66
5,548.96 12/22/04 70.98 69.13
5,549.02 01/18/05 70.92 69.07
5,550.66 02/28/05 69.28 67.43
5,551.26 03/15/05 68.68 66.83
5,552.23 04/26/05 67.71 65.86
5,552.87 05/24/05 67.07 65.22
5,553.42 06/30/05 66.52 64.67
5,554.00 07/29/05 65.94 64.09
5,555.21 09/12/05 64.73 62.88
5,558.13 12/07/05 61.81 59.96
5,562.93 03/08/06 57.01 55.16
5,564.39 06/13/06 55.55 53.70
5,562.09 07/18/06 57.85 56.00
5,565.49 11/07/06 54.45 52.60
5,571.08 02/27/07 48.86 47.01
Water Levels and Data over Time
White Mesa Mill -Well TW 4-13
Total or
Measuring Measured Total
Water Land Point Depth to Depth to Total
Elevation Surface Elevation Length Of Date Of Water Water Depth Of
(WL) (LSD) (MP) Riser (L) Monitoring (blw.MP) (blw.LSD) Well
5,618.09 5,619.94 1.85 105.7
5,570.63 05/02/07 49.31 47.46
5,565.24 08/14/07 54.70 52.85
5,565.83 10/10/07 54.11 52.26
5,569.29 03/26/08 50.65 48.80
5,570.00 06/24/08 49.94 48.09
5,570.41 08/26/08 49.53 47.68
5,570.64 10/14/08 49.30 47.45
5,570.43 03/03/09 49.51 47.66
5,570.56 06/24/09 49.38 47.53
5,570.42 09110/09 49.52 47.67
5,571.15 12/11/09 48.79 46.94
5,572.01 03/11/10 47.93 46.08
5,572.88 05/11/10 47.06 45.21
5,573.17 09/29/10 46.77 44.92
5,573.14 12/21/10 46.80 44.95
5,573.10 02/28/11 46.84 44.99
5,573.75 06/21/11 46.19 44.34
5,573.63 09/20/11 46.31 44.46
5,573.94 12/21/11 46.00 44.15
5,572.79 03/27/12 47.15 45.30
5,572.77 06/28/12 47.17 45.32
5,573.04 09/27/12 46.90 45.05
5,572.79 12/28/12 47.15 45.30
5,573.03 03/28/13 46.91 45.06
5,572.44 06/27/13 47.50 45.65
5,573.46 09/27/13 46.48 44.63
5,573.46 12/20/13 46.48 44.63
5,572.90 03/27/14 47.04 45.19
5,571.79 06/25/14 48.15 46.30
5,571.04 09/25/14 48.90 47.05
5,571.08 12/17/14 48.86 47.01
5,569.50 03/26/15 50.44 48.59
5,569.16 06/22/15 50.78 48.93
5,568.66 09/30/15 51.28 49.43
5,568.02 12/02/15 51.92 50.07
5,568.39 03/30/16 51.55 49.70
5,567.49 06/30/16 52.45 50.60
5,566.99 09/29/16 52.95 51.10
5,566.94 12/21/16 53.00 51.15
5,567.24 03/30/17 52.70 50.85
5,566.79 06/27/17 53.15 51.30
5,566.43 09/28/17 53.51 51.66
5,566.28 11/29/17 53.66 51.81
Water Levels and Data over Time
White Mesa Mill -Well TW 4-13
Total or
Measuring Measured Total
Water Land Point Depth to Depth to Total
Elevation Surface Elevation Length Of Date Of Water Water Depth Of
(WL) (LSD) (MP) Riser (L) Monitoring (blw.MP) (blw.LSD) Well
5,618.09 5,619.94 1.85 105.7
5,566.24 03/28/18 53.70 51.85
5,566.03 06/22/18 53.91 52.06
5,565.61 09/25/18 54.33 52.48
5,565.32 12/17/18 54.62 52.77
5,564.78 03/25/19 55.16 53.31
5,564.99 06/24/19 54.95 53.10
5,564.78 08/12/19 55.16 53.31
5,564.39 11/18/19 55.55 53.70
5,564.39 02/10/20 55.55 53.70
5,563.82 05/04/20 56.12 54.27
5,563.55 09/22/20 56.39 54.54
5,563.51 12/30/20 56.43 54.58
5,563.66 03/11/21 56.28 54.43
5,563.14 06/24/21 56.80 54.95
5,562.99 08/13/21 56.95 55.10
5,563.28 12/30/21 56.66 54.81
5,562.69 02/10/22 57.25 55.40
5,563.11 06/28/22 56.83 54.98
5,562.34 08/15/22 57.60 55.75
5,562.12 11 /17/22 57.82 55.97
5,562.62 03/24/23 57.32 55.47
5,562.24 06/26/23 57.70 55.85
-0 0 '° 0
Depth Below Measuring Point (ft.)
00 0 -...J 0 O'I 0 Vl 0
.j::,.
0
; 08/23/02
-01/20/03
06/19/03
-11/16/03
-04/14/04
09/11/04
02/08/05
07/08/05
12/05/05
05/04/06
10/01/06
02/28/07
07/28/07
12/25/07
05/23/08
10/20/08
03/19/09
08/16/09
01/13/10
06/12/10
11/09/10
-04/08/11
09/05/11
02/02/12
07/01/12
11/28/12
04/27/13
09/24/13
02/21/14
07/21/14
12/18/14
-05/17/15
10/14/15
-03/12/16
-08/09/16
01/06/17
06/05/17
-11/02/17
04/01/18
08/29/18
01/26/19
06/25/19
11/22/19
04/20/20
09/17/20
02/14/21
07/14/21
12/11/21
-05/10/22
-10/07/22
03/06/23
08/03/23
12/31/23
05/29/24 ..__ __ __._ ___ __._ ___ __._ ___ _._ ___ _.__ __ __._ 10/26/24
~ ~ ,I::.. I ~
CH
~ ;-.,
0 ~ "'C ..... =-0 -< ~ .,
~ ... a ~ -~
C"' -a
"'C ._,
Water Levels and Data over Time
White Mesa Mill -Well TW 4-14
Total or
Measuring Measured Total
Water Land Point Depth to Depth to Total
Elevation Surface Elevation Length Of Date Of Water Water Depth Of
(WL) (LSD) (MP) Riser (L) Monitoring (blw.MP) (blw.LSD) Well
5,610.92 5,612.77 1.85 95.1
5,518.90 08/23/02 93.87 92.02
5,519.28 09/11/02 93.49 91.64
5,519.95 10/23/02 92.82 90.97
5,520.32 11/22/02 92.45 90.60
5,520.42 12/03/02 92.35 90.50
5,520.70 01/09/03 92.07 90.22
5,520.89 02/12/03 91.88 90.03
5,521.12 03/26/03 91.65 89.80
5,521.12 04/02/03 91.65 89.80
5,521.24 05/01/03 91.53 89.68
5,521.34 06/09/03 91.43 89.58
5,521.36 07/07/03 91.41 89.56
5,521.35 08/04/03 91.42 89.57
5,521.30 09/11/03 91.47 89.62
5,521.35 10/02/03 91.42 89.57
5,521.36 11/07/03 91.41 89.56
5,521.16 12/03/03 91.61 89.76
5,521.29 01/15/04 91.48 89.63
5,521.36 02/10/04 91.41 89.56
5,521.46 03/28/04 91.31 89.46
5,521.54 04/12/04 91.23 89.38
5,521.59 05/13/04 91.18 89.33
5,521.69 06/18/04 91.08 89.23
5,521.71 07/28/04 91.06 89.21
5,521.76 08/30/04 91.01 89.16
5,521.77 09/16/04 91.00 89.15
5,521.79 10/11/04 90.98 89.13
5,521.80 11/16/04 90.97 89.12
5,521.82 12/22/04 90.95 89.10
5,521.82 01/18/05 90.95 89.10
5,521 .86 02/28/05 90.91 89.06
5,521.85 03/15/05 90.92 89.07
5,521.91 04/26/05 90.86 89.01
5,521.93 05/24/05 90.84 88.99
5,521.94 06/30/05 90.83 88.98
5,521.84 07/29/05 90.93 89.08
5,521.99 09/12/05 90.78 88.93
5,522.04 12/07/05 90.73 88.88
5,522.05 03/08/06 90.72 88.87
5,522.27 06/13/06 90.50 88.65
5,521.92 07/18/06 90.85 89.00
5,520.17 11/07/06 92.60 90.75
5,522.24 02/27/07 90.53 88.68
Water Levels and Data over Time
White Mesa Mill -Well TW 4-14
Total or
Measuring Measured Total
Water Land Point Depth to Depth to Total
Elevation Surface Elevation Length Of Date Of Water Water Depth Of
(WL) (LSD) (MP) Riser (L) Monitoring (blw.MP) (blw.LSD) Well
5,610.92 5,612.77 1.85 95.1
5,522.47 05/02/07 90.30 88.45
5,520.74 08/14/07 92.03 90.18
5,518.13 10/10/07 94.64 92.79
5,522.85 03/26/08 89.92 88.07
5,522.91 06/24/08 89.86 88.01
5,523.01 08/26/08 89.76 87.91
5,522.96 10/14/08 89.81 87.96
5,523.20 03/03/09 89.57 87.72
5,523.33 06/24/09 89.44 87.59
5,523.47 09/10/09 89.30 87.45
5,523.54 12/11/09 89.23 87.38
5,522.98 03/11/10 89.79 87.94
5,524.01 05/11/10 88.76 86.91
5,524.37 09/29/10 88.40 86.55
5,524.62 12/21/10 88.15 86.30
5,524.78 02/28/11 87.99 86.14
5,525.23 06/21/11 87.54 85.69
5,525.45 09/20/11 87.32 85.47
5,525.72 12/21/11 87.05 85.20
5,525.88 03/27/12 86.89 85.04
5,525.97 06/28/12 86.80 84.95
5,526.32 09/27/12 86.45 84.60
5,525.88 12/28/12 86.89 85.04
5,526.91 03/28/13 85.86 84.01
5,526.99 06/27/13 85.78 83.93.
5,527.68 09/27/13 85.09 83.24
5,528.19 12/20/13 84.58 82.73
5,528.75 03/27/14 84.02 82.17
5,529.21 06/25/14 83.56 81.71
5,529.78 09/25/14 82.99 81.14
5,530.41 12/17/14 82.36 80.51
5,530.86 03/26/15 81.91 80.06
5,531.40 06/22/15 81.37 79.52
5,532.15 09/30/15 80.62 78.77
5,532.12 12/02/15 80.65 78.80
5,533.12 03/30/16 79.65 77.80
5,533.13 06/30/16 79.64 77.79
5,533.24 09/29/16 79.53 77.68
5,533.42 12/21/16 79.35 77.50
5,533.97 03/30/17 78.80 76.95
5,534.05 06/27/17 78.72 76.87
5,534.07 09/28/17 78.70 76.85
5,534.29 11/29/17 78.48 76.63
Water Levels and Data over Time
White Mesa Mill -Well TW 4-14
Total or
Measuring Measured Total
Water Land Point Depth to Depth to Total
Elevation Surface Elevation Length Of Date Of Water Water Depth Of
(WL) (LSD) (MP) Riser (L) Monitoring {blw.MP) (blw.LSD) Well
5,610.92 5,612.77 1.85 95.1
5,534.56 03/28/18 78.21 76.36
5,534.67 06/22/18 78.10 76.25
5,534.75 09/25/18 78.02 76.17
5,534.71 12/17/18 78.06 76.21
5,534.71 03/25/19 78.06 76.21
5,535.04 06/24/19 77.73 75.88
5,535.17 08/12/19 77.60 75.75
5,535.09 11/18/19 77.68 75.83
5,535.31 02/10/20 77.46 75.61
5,535.12 05/04/20 77.65 75.80
5,535.25 09/22/20 77.52 75.67
5,535.54 12/30/20 77.23 75.38
5,535.55 03/11/21 77.22 75.37
5,535.41 06/24/21 77.36 75.51
5,535.25 08/13/21 77.52 75.67
5,535.65 12/30/21 77.12 75.27
5,535.43 02/10/22 77.34 75.49
5,535.40 06/28/22 77.37 75.52
5,535.37 08/15/22 77.40 75.55
5,535.26 11/17/22 77.51 75.66
5,535.62 03/24/23 77.15 75.3
5,535.43 06/26/23 77.34 75.49
-0 0
~ ,, \C)
0
◄
~.
►
►
•
◄ '
►
,
• ► ◄
00 0
'
►
0
'
',
► ►
► ◄ ►
► ►
~
.t
: ►
◄
► ◄►
Depth Below Measuring Point (ft.)
-.]
0 O'I 0
'
Vl
0
I
.j::..
0
'
l.;..)
0 Iv 0 -0 0
08/23/02
01/20/03
-06/19/03
-11/16/03
-04/14/04
09/11/04
-02/08/05
-07/08/05
12/05/05
05/04/06
10/01/06
02/28/07
-07/28/07
12/25/07
-
05/23/08 ~ 10/20/08 ~ 03/19/09
""" 08/16/09 I ~ 01/13/10 """ 06/12/10 ~ 11/09/10
-04/08/11 ......
t'I)
-09/05/11 "1
02/02/12 ~
t'I) 07/01/12 "C
-11/28/12 ...... =--04/27/13 0 09/24/13 < -02/21/14 t'I)
"1 -07/21/14 ~
-
12/18/14 -· = 05/17/15 t'I)
-
10/14/15 --03/12/16 ~
08/09/16 C"'
--01/06/17 = 06/05/17 "C
-11/02/17 -04/01/18
08/29/18
-01/26/19
-06/25/19
-11/22/19
04/20/20
-09/17/20
02/14/21
-07/14/21
12/11/21
-05/10/22
-10/07/22
03/06/23
08/03/23
12/31/23
05/29/24
10/26/24
Water Levels and Data over Time
White Mesa Mill-Well MW-26
Total or
Measuring Measured Total
Water Land Point Depth to Depth to Total
Elevation Surface Elevation Length Of Date Of Water Water Depth Of
(WL) (LSD) (MP) Riser (L) Monitoring (blw.MP) (blw.LSD) Well
5,624.15 5,625.45 1.30 121.33
5,574.75 08/23/02 50.70 49.40
5,574.97 09/11/02 50.48 49.18
5,575.10 10/23/02 50.35 49.05
5,574.99 11/22/02 50.46 49.16
5,575.28 12/03/02 50.17 48.87
5,575.41 01/09/03 50.04 48.74
5,575.43 02/12/03 50.02 48.72
5,575.63 03/26/03 49.82 48.52
5,575.91 04/02/03 49.54 48.24
5,575.81 05/01/03 49.64 48.34
5,572.36 06/09/03 53.09 51.79
5,570.70 07/07/03 54.75 53.45
5,570.29 08/04/03 55.16 53.86
5,560.94 09/11/03 64.51 63.21
5,560.63 10/02/03 64.82 63.52
5,560.56 11/07/03 64.89 63.59
5,564.77 12/03/03 60.68 59.38
5,570.89 01/15/04 54.56 53.26
5,572.55 02/10/04 52.90 51.60
5,574.25 03/28/04 51.20 49.90
5,574.77 04/12/04 50.68 49.38
5,575.53 05/13/04 49.92 48.62
5,575.59 06/18/04 49.86 48.56
5,576.82 07/28/04 48.63 47.33
5,527.47 09/16/04 97.98 96.68
5,553.97 11/16/04 71.48 70.18
5,562.33 12/22/04 63.12 61.82
5,550.00 01/18/05 75.45 74.15
5,560.02 04/26/05 65.43 64.13
5,546.11 05/24/05 79.34 78.04
5,556.71 06/30/05 68.74 67.44
5,554.95 07/29/05 70.50 69.20
5,555.48 09/12/05 69.97 68.67
5,551.09 12/07/05 74.36 73.06
5,552.85 03/08/06 72.60 71.30
5,554.30 06/13/06 71.15 69.85
5,554.87 07/18/06 70.58 69.28
5,550.88 11/07/06 74.57 73.27
5,558.77 02/27/07 66.68 65.38
5,548.54 05/02/07 76.91 75.61
5,551.33 10/10/07 74.12 72.82
5,545.56 03/26/08 79.89 78.59
5,545.56 06/25/08 79.89 78.59
Water Levels and Data over Time
White Mesa Mill-Well MW-26
Total or
Measuring Measured Total
Water Land Point Depth to Depth to Total
Elevation Surface Elevation Length Of Date Of Water Water Depth Of
(WL) (LSD) (MP) Riser (L) Monitoring (blw.MP) (blw.LSD) Well
5,624.15 5,625.45 1.30 121.33
5,545.82 08/26/08 79.63 78.33
5,545.64 10/14/08 79.81 78.51
5,544.45 03/03/09 81.00 79.70
5,545.32 06/24/09 80.13 78.83
5,544.61 09/10/09 80.84 79.54
5,549.33 12/11/09 76.12 74.82
5,543.78 03/11/10 81.67 80.37
5,545.61 05/11/10 79.84 78.54
5,547.43 09/29/10 78.02 76.72
5,544.14 12/21/10 81.31 80.01
5,546.77 02/28/11 78.68 77.38
5,537.60 06/21/11 87.85 86.55
5,551.46 09/20/11 73.99 72.69
5,549.12 12/21/11 76.33 75.03
5,557.30 03/27/12 68.15 66.85
5,557.38 06/28/12 68.07 66.77
5,550.86 09/27/12 74.59 73.29
5,557.30 12/28/12 68.15 66.85
5,565.37 03/28/13 60.08 58.78
5,563.55 06/27/13 61.90 60.60
5,560.12 09/27/13 65.33 64.03
5,559.27 12/20/13 66.18 64.88
5,556.65 03/27/14 68.80 67.50
5,552.23 06/25/14 73.22 71.92
5,554.05 09/25/14 71.40 70.10
5,550.65 12/17/14 74.80 73.50
5,557.55 03/26/15 67.90 66.60
5,558.51 06/22/15 66.94 65.64
5,560.81 09/30/15 64.64 63.34
5,560.25 12/02/15 65.20 63.90
5,561.07 03/30/16 64.38 63.08
5,560.51 06/30/16 64.94 63.64
5,557.99 09/29/16 67.46-66.16
5,561.26 12/21/16 64.19 62.89
5,559.85 03/30/17 65.60 64.30
5,559.35 06/27/17 66.10 64.80
5,553.30 09/28/17 72.15 70.85
5,557.38 11/30/17 68.07 66.77
5,543.85 03/28/18 81.60 80.30
5,553.27 06/22/18 72.18 70.88
5,547.57 09/24/18 77.88 76.58
5,547.63 12/20/18 77.82 76.52
5,545.54 03/25/19 79.91 78.61
Water Levels and Data over Time
White Mesa Mill-Well MW-26
Total or
Measuring Measured Total
Water Land Point Depth to Depth to Total
Elevation Surface Elevation Length Of Date Of Water Water Depth Of
(WL) (LSD) (MP) Riser (L) Monitoring (blw.MP) (blw.LSD) Well
5,624.15 5,625.45 1.30 121.33
5,547.27 06/24/19 78.18 76.88
5,549.07 08/12/19 76.38 75.08
5,549.15 11/18/19 76.30 75.00
5,552.38 02/13/20 73.07 71.77
5,539.82 05/04/20 85.63 84.33
5,545.34 09/21/20 80.11 78.81
5,551.33 12/28/20 74.12 72.82
5,551.37 03/11/21 74.08 72.78
5,539.74 06/24/21 85.71 84.41
5,550.05 08/11/21 75.40 74.10
5,539.30 12/30/21 86.15 84.85
5,549.04 02/10/22 76.41 75.11
5,542.23 06/28/22 83.22 81.92
5,551.32 08/15/22 74.13 72.83
5,541.16 11/17/22 84.29 82.99
5,541.12 03/24/23 84.33 83.03
5,536.93 06/27/23 88.52 87.22
-0 0 '° 0
Depth Below Measuring Point (ft.)
00 0 --.J 0 °' 0
V,
0 ~ 0
1------+------+------+-----t------------;-08/23/02
01/20/03
06/19/03
11/16/03
-04/14/04
-09/11/04
02/08/05
07/08/05
,_ 12/05/05
05/04/06
-10/01/06
02/28/07
07/28/07
-12/25/07
-05/23/08
10/20/08
03/19/09
,_ 08/16/09
01/13/10
06/12/10
,_ 11/09/10
04/08/11
09/05/1-1
02/02/12
07/01/12
11/28/12
04/27/13
09/24/13
02/21/14
07/21/14
12/18/14
05/17/15
10/14/15
03/12/16
08/09/16
01/06/17
06/05/17
11/02/17
04/01/18
08/29/18
01/26/19
06/25/19
11/22/19
04/20/20
09/17/20
02/14/21
07/14/21
12/11/21
-05/10/22
10/07/22
03/06/23
08/03/23
12/31/23
05/29/24 ,....__ __ __.. ___ __.._ ___ __._ ___ __,_ ___ _.__ ___ ~ 10/26/24
~ ~ N
O'I
~ ..... t'D -:
~ t'D "'O ..... =-0 -< t'D -:
~ ...
51 t'D -?
C"' -51 "'O -
Water Levels and Data over Time
White Mesa Mill-Well TW4-16
Total or
Measuring Measured Total
Water Land Point Depth to Depth to Total
Elevation Surface Elevation Length Of Date Of Water Water Depth Of
(WL) (LSD) (MP) Riser (L) Monitoring (blw.MP) (blw.LSD) Well
5,625.28 5,628.65 3.37 147.6
5,562.91 08/23/02 61.11 57.74
5,563.45 09/11/02 60.57 57.20
5,563.75 10/23/02 60.27 56.90
5,563.68 11/22/02 60.34 56.97
5,563.68 12/03/02 60.34 56.97
5,564.16 01/09/03 59.86 56.49
5,564.25 02/12/03 59.77 56.40
5,564.53 03/26/03 59.49 56.12
5,564.46 04/02/03 59.56 56.19
5,564.79 05/01/03 59.23 55.86
5,564.31 06/09/03 59.71 56.34
5,563.29 07/07/03 60.73 57.36
5,562.76 08/04/03 61.26 57.89
5,561.73 09/11/03 62.29 58.92
5,561.04 10/02/03 62.98 59.61
5,560.39 11/07/03 63.63 60.26
5,559.79 12/03/03 64.23 60.86
5,561.02 01/15/04 63.00 59.63
5,561.75 02/10/04 62.27 58.90
5,562.98 03/28/04 61.04 57.67
5,563.29 04/12/04 60.73 57.36
5,564.03 05/13/04 59.99 56.62
5,564.09 06/18/04 59.93 56.56
5,565.08 07/28/04 58.94 55.57
5,564.56 08/30/04 59.46 56.09
5,563.55 09/16/04 60.47 57.10
5,561.79 10/11/04 62.23 58.86
5,560.38 11/16/04 63.64 60.27
5,559.71 12/22/04 64.31 60.94
5,559.14 01/18/05 64.88 61.51
5,558.65 02/28/05 65.37 62.00
5,558.54 03/15/05 65.48 62.11
5,558.22 04/26/05 65.80 62.43
5,558.54 05/24/05 65.48 62.11
5,559.24 06/30/05 64.78 61.41
5,559.38 07/29/05 64.64 61.27
5,559.23 09/12/05 64.79 61.42
5,557.67 12/07/05 66.35 62.98
5,557.92 03/08/06 66.10 62.73
5,558.47 06/13/06 65.55 62.18
5,558.42 07/18/06 65.60 62.23
5,558.09 11/07/06 65.93 62.56
5,557.34 02/27/07 66.68 63.31
Water Levels and Data over Time
White Mesa Mill-Well TW4-16
Total or
Measuring Measured Total
Water Land Point Depth to Depth to Total
Elevation Surface Elevation Length Of Date Of Water Water Depth Of
(WL) (LSD) (MP) Riser (L) Monitoring (blw.MP) (blw.LSD) Well
5,625.28 5,628.65 3.37 147.6
5,547.11 05/02/07 76.91 73 .54
5,558.52 08/14/07 65.50 62.13
5,559.02 10/10/07 65.00 61.63
5,561.04 03 /26/08 62.98 59.61
5,560.06 06/24/08 63.96 60.59
5,559.32 08/26/08 64.70 61.33
5,558.89 10/14/08 65.13 61.76
5,558.40 03 /03/09 65.62 62.25
5,558.32 06/24/09 65.70 62.33
5,558.03 09/1 0/09 65.99 62.62
5,558.81 12/1 1/09 65 .21 61.84
5,559.80 03/11/10 64.22 60.85
5,559.85 05/11/10 64.17 60.80
5,560.54 09/29/10 63.48 60.11
5,558.65 12/21/10 65.37 62.00
5,559.26 02/28/11 64.76 61.39
5,560.48 06/21/11 63.54 60.17
5,561.52 09/20/11 62.50 59.13
5,562.95 12/21 /11 61.07 57.70
5,563.76 03 /27/12 60.26 56.89
5,563.90 06/28/12 60.12 56.75
5,564.65 09/27/12 59.37 56.00
5,563.77 12/28/12 60.25 56.88
5,564.74 03 /28/13 59.28 55.91
5,563.66 06/27/13 60.36 56.99
5,562.27 09/27/13 61.75 58.38
5,562.17 12/20/13 61.85 58.48
5,561.17 03 /27/14 62.85 59.48
5,559.53 06/25/14 64.49 61.12
5,558.36 09/25/14 65.66 62.29
5,558.00 12/17/14 66.02 62.65
5,559.02 03/26/15 65.00 61.63
5,560.62 06/22/15 63.40 60.03
5,560.62 09/30/15 63.40 60.03
5,560.85 12/02/15 63.17 59.80
5,560.92 03/30/16 63.10 59.73
5,559.95 06/30/16 64.07 60.70
5,559.72 09/29/16 64.30 60.93
5,559.71 12/21/16 64.31 60.94
5,559.53 03/30/17 64.49 61.12
5,569.02 06/27/17 59.63 56.26
5,558.97 09/28/17 69.68 66.31
5,558.51 11/30/17 70.14 66.77
Water Levels and Data over Time
White Mesa Mill-Well TW4-16
Total or
Measuring Measured Total
Water Land Point Depth to Depth to Total
Elevation Surface Elevation Length Of Date Of Water Water Depth Of
(WL) (LSD) (MP) Riser (L) Monitoring (blw.MP) (blw.LSD) Well
5,625.28 5,628.65 3.37 147.6
5,558.00 03/29/18 70.65 67.28
5,557.94 06/22/18 70.71 67.34
5,557.67 09/25/18 70.98 67.61
5,557.66 12/17/18 70.99 67.62
5,548.49 03/25/19 80.16 76.79
5,556.98 06/24/19 71.67 68.30
5,556.83 08/12/19 71.82 68.45
5,556.90 11/18/19 71.75 68.38
5,556.65 02/10/20 72.00 68.63
5,556.25 05/04/20 72.40 69.03
5,555.53 09/22/20 73.12 69.75
5,555.37 12/30/20 73.28 69.91
5,555.38 03/11/21 73.27 69.9
5,554.94 06/24/21 73.71 70.34
5,554.95 08/13/21 73.70 70.33
5,555.23 12/30/21 73.42 70.05
5,554.68 02/10/22 73.97 70.60
5,554.93 06/28/22 73.72 70.35
5,554.47 08/15/22 74.18 70.81
5,554.26 11/17/22 74.39 71.02
5,553.79 03/24/23 74.86 71.49
5,553.80 06/26/23 74.85 71.48
00
Vl
00 0
Depth Below Measuring Point (ft.)
--.J
Vl
--.J 0 0\
Vl
O'I 0 Vl
Vl
Vl
0
i------i--------t----------ir-----+-----<1~---------1----i-08/23/02
01/20/03
06/19/03
11/16/03
04/14/04
09/11/04
02/08/05
07/08/05
12/05/05
05/04/06
10/01/06
02/28/07
07/28/07
12/25/07
05/23/08
10/20/08
03/19/09
· 08/16/09
01/13/10
06/12/10
,. 11/09/10
04/08/11
09/05/11
02/02/12
07/01/12
11/28/12
04/27/13
09/24/13
02/21/14
07/21/14
12/18/14
05/17/15
10/14/15
03/12/16
08/09/16
01/06/17
06/05/17
11/02/17
04/01/18
08/29/18
01/26/19
06/25/19
11/22/19
04/20/20
09/17/20
02/14/21
07/14/21
12/11/21
-05/10/22
-10/07/22
03/06/23
08/03/23
12/31/23
05/29/24
L-----'-------'----'------'------'---------''------'-10/26/24
~ ~ .&;.
I ~
O"I
~ ..... ti)
""f
t:,
ti)
"Cl ..... =-0 -< ti) ..,
~ ... a
ti) -~
C"' -a
"Cl -
Water Levels and Data over Time
White Mesa Mill -Well MW-32
Total or
Measuring Measured Total
Water Land Point Depth to Depth to Total
Elevation Surface Elevation Length Of Date Of Water Water Depth Of
(WL) (LSD) (MP) Riser (L) Monitoring (blw.MP) (blw.LSD) Well
5,623.41 5,625.24 1.83 130.6
5,542.17 08/23/02 83.07 81 .24
5,542.39 09/11/02 82.85 81.02
5,542.61 10/23/02 82.63 80 .80
5,542.49 11/22/02 82.75 80.92
5,542.82 12/03/02 82.42 80.59
5,543.03 01/09/03 82.21 80.38
5,543.04 02/12/03 82.20 80.37
5,543.41 03/26/03 81.83 80.00
5,543.69 04/02/03 81.55 79.72
5,543.77 05/01 /03 81.47 79.64
5,544.01 06/09/03 81 .23 79.40
5,544.05 07/07/03 81.19 79.36
5,543.99 08/04/03 81.25 79.42
5,544.17 09/11/03 81.07 79.24
5,544.06 10/02/03 81.18 79.35
5,544.03 11/07/03 81.21 79.38
5,543.94 12/03/03 81.30 79.47
5,543.98 01/15/04 81.26 79.43
5,543.85 02/10/04 81.39 79.56
5,544.05 03/28/04 81.19 79.36
5,544.33 04/12/04 80.91 79.08
5,544.55 05/13/04 80.69 78.86
5,544.59 06/18/04 80.65 78.82
5,545.08 07/28/04 80.16 78.33
5,545.26 08/30/04 79.98 78.15
5,545.48 09/16/04 79.76 77.93
5,545.61 10/11/04 79.63 77.80
5,545.46 11/16/04 79.78 77.95
5,545.66 12/22/04 79.58 77.75
5,545.33 01/18/05 79.91 78.08
5,545.51 02/28/05 79.73 77.90
5,545.57 03/15/05 79.67 77.84
5,545.46 04/26/05 79.78 77.95
5,545.45 05/24/05 79.79 77.96
5,545.33 06/30/05 79.91 78.08
5,545.16 07/29/05 80.08 78.25
5,545.54 09/12/05 79.70 77.87
5,545.77 12/07/05 79.47 77.64
5,546.09 03/08/06 79.15 77.32
5,545.94 06/13/06 79.30 77.47
5,545.94 07/18/06 79.30 77.47
5,546.24 11/07/06 79.00 77.17
5,546.81 02/27/07 78.43 76.60
Water Levels and Data over Time
White Mesa Mill -Well MW-32
Total or
Measuring Measured Total
Water Land Point Depth to Depth to Total
Elevation Surface Elevation Length Of Date Of Water Water Depth Of
(WL) (LSD) (MP) Riser (L) Monitoring (blw.MP) (blw.LSD) Well
5,623.41 5,625.24 1.83 130.6
5,546.56 05/02/07 78.68 76.85
5,546.81 08/15/07 78.43 76.6
5,546.96 10/10/07 78.28 76.45
5,547.90 03/26/08 77.34 75.51
5,548.08 06/25/08 77.16 75.33
5,548.42 08/26/08 76.82 74.99
5,548.05 10/14/08 77.19 75.36
5,548.29 03/03/09 76.95 75.12
5,548.09 06/24/09 77.15 75.32
5,547.79 09/10/09 77.45 75.62
5,548.09 12/11/09 77.15 75.32
5,548.50 03/11/10 76.74 74.91
5,548.89 05/11/10 76.35 74.52
5,548.83 09/29/10 76.41 74.58
5,548.97 12/21/10 76.27 74.44
5,548.68 02/28/11 76.56 74.73
5,549.33 06/21/11 75.91 74.08
5,549.19 09/20/11 76.05 74.22
5,550.06 12/21/11 75.18 73.35
5,550.31 03/27/12 74.93 73.10
5,550.32 06/28/12 74.92 73.09
5,550.88 09/27/12 74.36 72.53
5,550.29 12/28/12 74.95 73.12
5,551.54 03/28/13 73.70 71.87
5,550.34 06/27/13 74.90 73.07
5,551.35 09/27/13 73.89 72.06
5,551.33 12/20/13 73.91 72.08
5,550.97 03/27/14 74.27 72.44
5,550.16 06/25/14 75.08 73.25
5,549.29 09/25/14 75.95 74.12
5,548.99 12/17/14 76.25 74.42
5,548.24 03/26/15 77.00 75.17
5,548.29 06/22/15 76.95 75.12
5,548.33 09/30/15 76.91 75.08
5,547.98 12/02/15 77.26 75.43
5,548.24 03/30/16 77.00 75.17
5,547.68 06/30/16 77.56 75.73
5,547.29 09/29/16 77.95 76.12
5,547.09 12/21/16 78.15 76.32
5,547.34 03/30/17 77.90 76.07
5,546.94 06/27/17 78.30 76.47
5,546.59 09/28/17 78.65 76.82
5,546.32 11/30/17 78.92 77.09
Water Levels and Data over Time
White Mesa Mill -Well MW-32
Total or
Measuring Measured Total
Water Land Point Depth to Depth to Total
Elevation Surface Elevation Length Of Date Of Water Water Depth Of
{WL) (LSD) (MP) Riser (L) Monitoring (blw.MP) (blw.LSD) Well
5,623.41 5,625.24 1.83 130.6
5,546.19 03/29/18 79.05 77.22
5,545.99 06/22/18 79.25 77.42
5,545.57 09/26/18 79.67 77.84
5,545.56 12/17/18 79.68 77.85
5,545.08 03/26/19 80.16 78.33
5,544.99 06/24/19 80.25 78.42
5,544.87 08/12/19 80.37 78.54
5,544.70 11/19/19 80.54 78.71
5,544.57 02/13/20 80.67 78.84
5,544.99 05/05/20 80.25 78.42
5,543.69 09/22/20 81.55 79.72
5,543.67 12/30/20 81.57 79.74
5,543.64 03/11/21 81.60 79.77
5,543.20 06/24/21 82.04 80.21
5,543.06 08/11/21 82.18 80.35
5,543.37 12/30/21 81.87 80.04
5,542.66 02/10/22 82.58 80.75
5,542.36 06/28/22 82.88 81.05
5,542.44 08/15/22 82.80 80.97
5,542.31 11/17/22 82.93 81.10
5,542.38 03/24/23 82.86 81.03
5,542.39 06/27/23 82.85 81.02
00 ~ 00 N
Depth Below Measuring Point (ft.)
00
0
-.J
00 -.J 0\
-.J ~ -.J tv
08/23/02
01/20/03
06/19/03
11/16/03
04/14/04
09/11/04
02/08/05
07/08/05
12/05/05
05/04/06
10/01/06
02/28/07
07/28/07
12/25/07
05/23/08 ~-10/20/08
03/19/09 ~ 08/16/09 ~
01/13/10 N
06/12/10 ~ 11/09/10
04/08/11 .... ~
09/05/11 .,
02/02/12 ~
07/01/12 ~ "'C
11/28/12 .... =-04/27/13 0 09/24/13 <
02/21/14 ~ .,
07/21/14 ~
12/18/14 ... a 05/17/15 ~
10/14/15 -03/12/16 ~
08/09/16 C"'
01/06/17 -a 06/05/17 "'C
11/02/17 -
04/01/18
-08/29/18
01/26/19
06/25/19
11/22/19
04/20/20
09/17/20
02/14/21
07/14/21
12/11/21
05/10/22
10/07/22
03/06/23
08/03/23
12/31/23
05/29/24
10/26/24
Water Levels and Data over Time
White Mesa Mill -Well TW 4-18
Total or
Measuring Measured Total
Water Land Point Depth to Depth to Total
Elevation Surface Elevation Length Of Date Of Water Water Depth Of
(WL) (LSD) (MP) Riser (L) Monitoring (blw.MP) (blw.LSD) Well
5,639.13 5 641.28 2.15 136.9
5,585.13 08/23/02 56.15 54.00
5,585.41 09/11/02 55 .87 53.72
5,585.47 10/23 /02 55.81 53 .66
5,585.40 11/22/02 55.88 53 .73
5,585.68 12/03/02 55.60 53.45
5,585.90 01/09/03 55.38 53.23
5,590.79 02/12/03 50.49 48.34
5,586.18 03/26/03 55.10 52.95
5,586.36 04/02/03 54.92 52.77
5,586.24 05/01/03 55 .04 52.89
5,584.93 06/09/03 56.35 54.20
5,584.46 07/07/03 56.82 54.67
5,584.55 08/04/03 56.73 54.58
5,584.01 09/11 /03 57.27 55.12
5,583.67 10/02/03 57.61 55.46
5,583.50 11/07/03 57.78 55.63
5,584.08 12/03/03 57.20 55.05
5,585.45 01/15/04 55.83 53.68
5,585.66 02/10/04 55.62 53.47
5,586.13 03/28/04 55.15 53.00
5,586.39 04/12/04 54 .89 52.74
5,586.66 05/13/04 54.62 52.47
5,586.77 06/18/04 54.51 52.36
5,587.35 07/28/04 53.93 51.78
5,586.34 08/30/04 54.94 52.79
5,585.85 09/16/04 55.43 53.28
5,585.22 10/11/04 56.06 53.91
5,584.70 11/16/04 56.58 54.43
5,584.81 12/22/04 56.47 54.32
5,584.68 01/18/05 56.60 54.45
5,585.02 02/28/05 56.26 54.11
5,585.25 03/15/05 56.03 53 .88
5,586.31 04/26/05 54.97 52.82
5,586.97 05/24/05 54.31 52.16
5,586.58 06/30/05 54.70 52.55
5,586.10 07/29/05 55.18 53 .03
5,586.05 09/12/05 55.23 53 .08
5,585.86 12/07/05 55.42 53.27
5,587.13 03/08/06 54.15 52.00
5,585.93 06/13/06 55.35 53 .20
5,585.40 07/18/06 55.88 53 .73
5,585.38 11/07/06 55.90 53 .75
5,585.83 02/27/07 55.45 53.30
Water Levels and Data over Time
White Mesa Mill -Well TW 4-18
Total or
Measuring Measured Total
Water Land Point Depth to Depth to Total
Elevation Surface Elevation Length Of Date Of Water Water Depth Of
(WL) (LSD) (MP) Riser (L) Monitoring (blw.MP) (blw.LSD) Well
5,639.13 5,641.28 2.15 136.9
5,585.15 05/02/07 56.13 53.98
5,586.47 06/24/08 54.81 52.66
5,586.30 08/26/08 54.98 52.83
5,585.21 10/14/08 56.07 53.92
5,584.47 03/03/09 56.81 54.66
5,584.35 06/24/09 56.93 54.78
5,583.88 09/10/09 57.40 55.25
5,584.43 12/11/09 56.85 54.70
5,585.26 03/11/10 56.02 53.87
5,584.17 05/11/10 57.11 54.96
5,583.61 09/29/10 57.67 55.52
5,604.29 12/21/10 36.99 34.84
5,583.56 02/28/11 57.72 55.57
5,584.73 06/21/11 56.55 54.40
5,584.71 09/20/11 56.57 54.42
5,585.03 12/21/11 56.25 54.10
5,584.63 03/27/12 56.65 54.50
5,584.67 06/28/12 56.61 54.46
5,583.98 09/27/12 57.30 55.15
5,584.65 12/28/12 56.63 54.48
5,582.88 03/28/13 58.40 56.25
5,584.63 06/27/13 56.65 54.50
5,581.38 09/27/13 59.90 57.75
5,579.71 12/20/13 61.57 59.42
5,579.26 03/27/14 62.02 59.87
5,577.73 06/25/14 63.55 61.40
5,576.79 09/25/14 64.49 62.34
5,577.11 12/17/14 64.17 62.02
5,577.18 03/26/15 64.10 61.95
5,577.13 06/22/15 64.15 62.00
5,576.63 09/30/15 64.65 62.50
5,576.20 12/02/15 65.08 62.93
5,576.05 03/30/16 65.23 63.08
5,575.35 06/30/16 65.93 63.78
5,575.02 09/29/16 66.26 64.11
5,574.34 12/21/16 66.94 64.79
5,574.73 03/30/17 66.55 64.40
5,574.13 06/27/17 67.15 65.00
5,573.51 09/28/17 67.77 65.62
5,572.93 11/29/17 68.35 66.20
5,572.51 03/29/18 68.77 66.62
5,572.28 06/22/18 69.00 66.85
5,571.72 09/26/18 69.56 67.41
Water Levels and Data over Time
White Mesa Mill -Well TW 4-18
Total or
Measuring Measured Total
Water Land Point Depth to Depth to Total
Elevation Surface Elevation Length Of Date Of Water Water Depth Of
(WL) (LSD) (MP) Riser (L) Monitoring (blw.MP) (blw.LSD) Well
5,639.13 5,641 .28 2.15 136.9
5,571.45 12/17/18 69.83 67.68
5,570.86 03/26/19 70.42 68.27
5,570.60 06/24/19 70.68 68.53
5,570.53 08/12/19 70.75 68.60
5,570.39 11/19/19 70.89 68.74
5,570.03 02/10/20 71.25 69.10
5,569.68 05 /04/20 71.60 69.45
5,568.90 09/22/20 72.38 70.23
5,568.70 12/30/20 72.58 70.43
5,568.73 03 /11 /21 72.55 70.40
5,568.28 06/24/21 73.00 70.85
5,568.17 08/13/21 73.11 70.96
5,568.41 12/30/21 72.87 70.72
5,567.75 02/10/22 73.53 71.38
5,567.34 06/28/22 73.94 71.79
5,567.35 08/15/22 73.93 71.78
5,567.22 11/17/22 74.06 71.91
5,566.81 03/24/23 74.47 72.32
5,566.79 06/26/23 74.49 72.34
00 0 -..l 0 0\ 0
Depth Below Measuring Point (ft.)
Vl 0 -+'" 0 w 0 N 0 -0 0
08/23/02
01/20/03
06/19/03
11/16/03
04/14/04
-09/11/04
02/08/05
07/08/05
12/05/05
05/04/06
10/01/06
02/28/07
07/28/07
12/25/07
05/23/08 i--3 10/20/08 ~ 03/19/09 ,&;.. 08/16/09 I
i,,,.o. 01/13/10 00
06/12/10 i 11/09/10
04/08/11 ..... ~
09/05/11 .,
02/02/12 ~ ~ 07/01/12 "'C
11/28/12 ..... =-04/27/13 0 -09/24/13 <
02/21/14 ~ .,
07/21/14 i--3 ,_ 12/18/14 ....
9 05/17/15 ~
10/14/15 -03/12/16 ~
08/09/16 C"' -01/06/17 9 06/05/17 "'C
11/02/17 --
04/01/18
08/29/18
01/26/19
06/25/19
11/22/19
04/20/20
09/17/20
02/14/21
07/14/21
12/11/21
05/10/22
10/07/22
03/06/23
08/03/23
12/31/23
05/29/24
10/26/24
Water Levels and Data over Time
White Mesa Mill -Well TW 4-19
Total or
Measuring Measured
Water Land Point Depth to Total Depth
Elevation Surface Elevation Length Of Date Of Water to Water Total Depth Of
(WL) (LSD) (MP) Riser (L) Monitoring (blw.MP) (blw.LSD) Well
5,629.53 5,631.39 1.86 126.86
5,581.88 08/23/02 49.51 47.65
5,582.14 09/11/02 49.25 47.39
5,582.06 10/23 /02 49.33 47.47
5,582.07 11 /22/02 49.32 47.46
5,582.16 12/03/02 49.23 47.37
5,582.28 01/09/03 49.11 47.25
5,582.29 02/21/03 49.10 47.24
5,582.74 03/26/03 48.65 46.79
5,582.82 04/02/03 48.57 46.71
5,548.47 05/01 /03 82.92 81.06
5,564.76 06/09/03 66.63 64.77
5,562.53 07/07/03 68.86 67.00
5,564.10 08/04/03 67.29 65.43
5,566.01 08/30/04 65.38 63.52
5,555.16 09/16/04 76.23 74.37
5,549.80 10/11/04 81.59 79.73
5,546.04 11/16/04 85.35 83.49
5,547.34 12/22/04 84.05 82.19
5,548.77 01/18/05 82.62 80.76
5,551.18 02/28/05 80.21 78.35
5,556.81 03/15/05 74.58 72.72
5,562.63 04/26/05 68.76 66.90
5,573.42 05/24/05 57.97 56.11
5,552.94 07/29/05 78.45 76.59
5,554.00 09/12/05 77.39 75.53
5,555.98 12/07/05 75.41 73.55
5,552.00 03/08/06 79.39 77.53
5,545.74 06/13/06 85.65 83.79
5,544.06 07/18/06 87.33 85.47
5,548.81 11/07/06 82.58 80.72
5,543.59 02/27/07 87.80 85.94
5,544.55 05/02/07 86.84 84.98
5,558.97 08/15/07 72.42 70.56
5,559.73 10/10/07 71.66 69 .8
5,569.26 03/26/08 62.13 60.27
5,535.47 06/25/08 95.92 94.06
5,541.41 08/26/08 89.98 88.12
5,558.45 10/14/08 72.94 71 .08
5,536.90 03/03/09 94.49 92.63
5,547.76 06/24/09 83.63 81 .77
5,561.48 09/10/09 69.91 68.05
5,548.14 12/11/09 83.25 81.39
5,570.58 03/11/10 60.81 58.95
Water Levels and Data over Time
White Mesa Mill -Well TW 4-19
Total or
Measuring Measured
Water Land Point Depth to Total Depth
Elevation Surface Elevation Length Of Date Of Water to Water Total Depth Of
(WL) (LSD) (MP) Riser (L) Monitoring (blw.MP) (blw.LSD) Well
5,629.53 5,631.39 l.86 126.86
5,561.35 05/11/10 70.04 68.18
5,535.26 09/29/10 96.13 94.27
5,568.40 12/21/10 62.99 61.13
5,550.36 02/28/11 81.03 79.17
5,570.41 06/21/11 60.98 59.12
5,567.84 09/20/11 63.55 61.69
5,571.32 12/21/1 l 60.07 58.21
5,572.40 03/27/12 58.99 57.13
5,572.39 06/28/12 59.00 57.14
5,571.40 09/27/12 59.99 58.13
5,568.21 12/28/12 63.18 61.32
5,572.51 03/28/13 58.88 57.02
5,566.00 06/27/13 65.39 63 .53
5,568.37 09/27/13 63.02 61.16
5,564.55 12/20/13 66.84 64.98
5,565.11 03/27/14 66.28 64.42
5,561.49 06/25/14 69.90 68.04
5,562.67 09/25/14 68.72 66.86
5,562.99 12/17 /14 68.40 66.54
5,567.99 03 /26/15 63.40 61.54
5,562.79 06/22/15 68.60 66.74
5,568.16 09/30/15 63.23 61.37
5,567.51 12/02/15 63.88 62.02
5,566.38 03/30/16 65.01 63.15
5,566.91 06/30/16 64.48 62.62
5,567.38 09/29/16 64.01 62.15
5,567.41 12/21/16 63.98 62.12
5,566.87 03/30/17 64.52 62.66
5,566.76 06/27/17 64.63 62.77
5,565.19 09/28/17 66.20 64.34
5,565.79 11/30/17 65.60 63.74
5,563.79 03/28/18 67.60 65.74
5,564.58 06/22/18 66.81 64.95
5,562.56 09/24/18 68.83 66.97
5,555.78 12/18/18 75.61 73.75
5,547.86 03/25/19 83.53 81.67
5,557.99 06/24/19 73.40 71.54
5,554.26 08/12/19 77.13 75.27
5,561.87 11/18/19 69.52 67.66
5,561.71 02/10/20 69.68 67.82
5,563.21 05/04/20 68.18 66.32
5,559.19 09/21/20 72.20 70.34
5,554.95 12/28/20 76.44 74.58
Water Levels and Data over Time
White Mesa Mill -Well TW 4-19
Total or
Measuring Measured
Water Land Point Depth to Total Depth
Elevation Surface Elevation Length Of Date Of Water to Water Total Depth Of
(WL) (LSD) (MP) Riser (L) Monitoring (blw.MP) (blw.LSD) Well
5,629.53 5,631.39 1.86 126.86
5,558.24 03/11/21 73.15 71.29
5,559.02 06/24/21 72.37 70.51
5,557.99 08/13/21 73.40 71.54
5,559.25 12/30/21 72.14 70.28
5,560.12 02/10/22 71.27 69.41
5,559.22 06/28/22 72.17 70.31
5,557.94 08/15/22 73.45 71.59
5,559.35 11/17/22 72.04 70.18
5,557.32 03/24/23 74.07 72.21
5,561.29 06/26/23 70.10 68.24
-0 0 \.0 0
Depth Below Measuring Point (ft.)
00 0 -.J 0 °' 0 Vl 0 ~ 0
02/13/02
-06/28/03
11/09/04
03/24/06
08/06/07 ~ ~
12/18/08 ,i;;..
I i,...
\0
05/02/10 ~ ..... ~ .,
~
09/14/11 ~ '"Cl ..... =-
01/26/13 0 -< ~ .,
~
06/10/14 ....
9 ~ -
10/23/15 ?
C"' -9 '"Cl -03/06/17 -
07/19/18
,_ 12/01/19
04/14/21
08/27/22
01/09/24
Water Levels and Data over Time
White Mesa Mill-Well TW4-21
Total or
Measuring Measured Total
Water Land Point Date Of Depth to Depth to Total
Elevation Surface Elevation Length Of Monitoring Water Water Depth Of
(WL) (LSD) (MP) Riser (L) (blw.MP) (blw.LSD) Well
5,638.20 5,639.35 1.15 118.8
5,582.98 07/29/05 56.37 55.22
5,583.43 08/30/05 55.92 54.77
5,581.87 09/12/05 57.48 56.33
5,580.50 12/07/05 58.85 57 .70
5,583.64 03/08/06 55.71 54 .56
5,580.55 06/13/06 58.80 57.65
5,578.95 07/18/06 60.40 59.25
5,578.47 11/07/06 60.88 59 .73
5,579.53 02/27/07 59.82 58 .67
5,578.07 05/02/07 61.28 60.13
5,583.41 08/15/07 55.94 54.79
5,583.45 10/10/07 55.90 54.75
5,586.47 03/26/08 52.88 51.73
5,579.16 06/24/08 60.19 59.04
5,579.92 08/26/08 59.43 58.28
5,577.37 10/14/08 61.98 60.83
5,578.00 03/10/09 61.35 60.20
5,580.14 06/24/09 59.21 58 .06
5,578.72 09110/09 60.63 59.48
5,579.99 12/11/09 59.36 58.21
5,582.81 03/11/10 56.54 55.39
5,582.23 05/11/10 57.12 55.97
5,576.60 09/29/10 62.75 61.60
5,581.14 12/21/10 58.21 57.06
5,579.53 02/28/11 59.82 58.67
5,584.17 06/21/11 55.18 54.03
5,584.80 09/20/11 54.55 53.40
5,585.68 12/21/11 53.67 52.52
5,585.24 03/27/12 54.11 52.96
5,585.26 06/28/12 54.09 52.94
5,585.16 09/27/12 54.19 53.04
5,585.25 12/28/12 54.10 52.95
5,582.84 03/28/13 56.51 55.36
5,581.79 06/27/13 57.56 56.41
5,580.89 09/27/13 58.46 57.31
5,577.45 12/20/13 61.90 60.75
5,576.01 03/27/14 63.34 62.19
5,574.08 06/25/14 65.27 64.12
5,573.20 09/25/14 66.15 65.00
5,576.13 12/17/14 63 .22 62.07
5,578.19 03/26/15 61.16 60.01
5,574.85 06/22/15 64.50 63.35
Water Levels and Data over Time
White Mesa Mill-Well TW4-21
Total or
Measuring Measured Total
Water Land Point Date Of Depth to Depth to Total
Elevation Surface Elevation Length Of Monitoring Wllter Water Depth Of
(WL) (LSD) (MP) Riser (L) (blw.MP) (blw.LSD) Well
5,638.20 5,639.35 1.15 118.8
5,573.05 09/30/15 66.30 65 .15
5,569.88 12/02/15 69.47 68.32
5,571.81 03/30/16 67.54 66.39
5,571.86 06/30/16 67.49 66.34
5,570.82 09/29/16 68.53 67.38
5,570.45 12/21/16 68.90 67.75
5,574.53 03/30/17 64.82 63.67
5,569.91 06/27/17 69.44 68 .29
5,569.49 09/28/17 69.86 68.71
5,566.87 11/30/17 72.48 71.33
5,568.10 03/28/18 71.25 70.10
5,568.17 06/22/18 71.18 70 .03
5,567.50 09/24/18 71.85 70.70
5,554.80 12/17/18 84.55 83.40
5,560.92 03/25/19 78.43 77.28
5,561.49 06/24/19 77.86 76.71
5,564.17 08/12/19 75.18 74.03
5,555.91 11/18/19 83.44 82.29
5,561.05 02/10/20 78.30 77.15
5,567.23 05/04/20 72.12 70.97
5,566.29 09/21/20 73.06 71.91
5,562.48 12/28/20 76.87 75 .72
5,568.64 03/11/21 70.71 69.56
5,564.50 06/24/21 74.85 73.70
5,567.02 08/13/21 72.33 71.18
5,563.30 12/30/21 76.05 74.90
5,567.61 02/10/22 71.74 70.59
5,567.20 06/28/22 72.15 71.00
5,563.51 08/15/22 75.84 74.69
5,567.10 11/17/22 72.25 71.10
5,562.38 03/24/23 76.97 75 .82
5,561.05 06/26/23 78.30 77.15
'° 0 00 0 --.J 0
Depth Below Measuring Point (ft.)
0\ 0 U\ 0 ~ 0 w 0 N 0 -0 0
07/29/05
12/26/05
05/25/06
10/22/06
· 03/21/07
08/18/07
01/15/08
06/13/08
11/10/08
04/09/09
09/06/09
02/03/10
07/03/10
11/30/10
04/29/11
09/26/11
02/23/12
07/22/12
12/19/12
05/18/13
10/15/13
03/14/14
08/11/14
01/08/15
06/07/15
11/04/15
04/02/16
08/30/16
01/27/17
06/26/17
11/23/17
04/22/18
09/19/18
02/16/19
07/16/19
12/13/19
05/11/20
10/08/20
03/07/21
08/04/21
01/01/22
05/31/22
10/28/22
03/27/23
08/24/23
01/21/24
06/19/24
~ ~ ~ I N
~
~ s-""l
~ tD
"C st
0 -< tD ""l
~ ...
9 tD -?
O"' a
"C -
Water Levels and Data over Time
White Mesa Mill-Well TW4-22
Total or
Measuring Measured Total
Water Land Point Depth to Depth to Total
Elevation Surface Elevation Length Of Date Of Water Water Depth Of
(WL} (LSD) (MP) Riser (L) Monitoring (blw.MP) (blw.LSD) Well
5 627.83 5 629.00 1.17 114.7
5,571.89 07/29/05 57.11 55.94
5,572.20 08/30/05 56.80 55.63
5,572.08 09/12/05 56.92 55.75
5,571.61 12/07/05 57.39 56.22
5,571.85 03/08/06 57.15 55.98
5,571.62 06/13/06 57.38 56.21
5,571.42 07/18/06 57.58 56.41
5,571.02 11/07/06 57.98 56.81
5571.24 02/27/07 57.76 56.59
5,570.75 06/29/07 58.25 57.08
5,571.82 08/14/07 57.18 56.01
5,571.99 10/10/07 57.01 55.84
5,573.05 03/26/08 55.95 54.78
5,573.04 06/24/08 55.96 54.79
5,573.04 08/26/08 55.96 54.79
5,573.02 10/14/08 55.98 54.81
5,573.19 03/10/09 55.81 54.64
5,573.32 06/24/09 55.68 54.51
5,573.17 09/10/09 55.83 54.66
5,573.52 12/11/09 55.48 54.31
5,573.88 03/11/10 55,.12 53.95
5,574.29 05/11/10 54.71 53.54
5,574.88 09/29/10 54.12 52.95
5,574.44 12/21/10 54.56 53.39
5,574.49 02/28/11 54.51 53.34
5,574.97, 06/21/11 54.03 52.86
5,575.06 09/20/11 53.94 52.77
5,575.69 12/21/11 53.31 52.14
5,575.61 03/27/12 53.39 52.22
5,575.62 06/28/12 53.38 52.21
5,575.90 09/27/12 53.10 51.93
5,575.59 12/28/12 53.41 52.24
5,573.50 03/28/13 55.50 54.33
5,572.45 06/27/13 56.55 55.38
5,572.25 09/27/13 56.75 55.58
5,569.93 12/20/13 59.07 57.90
5,569.36 03/27/14 59.64 58.47
5,569.02 06/25/14 59.98 58.81
5,570.00 09/25/14 59.00 57.83
5,568.60 12/17/14 60.40 59.23
5,557.00 03/26/15 72.00 70.83
5,570.93 06/22/15 58.07 56.90
Water Levels and Data over Time
White Mesa Mill -Well TW 4-22
Total or
Measuring Measured Total
Water Land Point Depth to Depth to Total
Elevation Surface Elevation Length Of Date Of Water Water Depth Of
(WL) (LSD) (MP) Riser (L) Monitoring (blw.MP) (blw.LSD) Well
5,627.83 5,629.00 1.17 114.7
5,571.24 09/30/15 57.76 56.59
5,568.23 12/02/15 60.77 59.60
5,570.28 03/30/16 58.72 57.55
5,570.75 06/30/16 58.25 57.08
5,544.60 09/29/16 84.40 83.23
5,565.11 12/21/16 63.89 62.72
5,567.99 03/30/17 61.01 59.84
5,569.17 06/27/17 59.83 58.66
5,569.37 09/28/17 59.63 58.46
5,566.48 11/30/17 62.52 61.35
5,568.30 03/28/18 60.70 59.53
5,568.42 06/22/18 60.58 59.41
5,567.98 09/24/18 61.02 59.85
5,553.65 12/17/18 75.35 74.18
5,550.09 03/25/19 78.91 77.74
5,540.65 06/24/19 88.35 87.18
5,557.09 08/12/19 71.91 70.74
5,544.97 11/18/19 84.03 82.86
5,558.05 02/10/20 70.95 69.78
5,558.77 05/04/20 70.23 69.06
5,559.12 09/21/20 69.88 68.71
5,564.70 12/28/20 64.30 63.13
5,560.i'9 03/11/21 68.81 67.64
5,560.12 06/24/21 68.88 67.71
5,560.80 08/13/21 68.20 67.03
5,562.87 12/30/21 66.13 64.96
5,559.35 02/10/22 69.65 68.48
5,559.49 06/28/22 69.51 68.34
5,548.25 08/15/22 80.75 79.58
5,558.30 11/17/22 70.70 69.53
5,559.30 03/24/23 69.70 68.53
5,560.71 06/26/23 68.29 67.12
Depth Below Measuring Point (ft.) -0 '-0 00 -.J O'\ V, +>-w N -0 0 0 0 0 0 0 0 0 0 0
07/29/05
12/26/05
05/25/06
10/22/06
03/21/07
08/18/07
01/15/08
06/13/08
I l/W/08
04/09/09
-09/06/09
02/03/10
-07/03/10 ~
11/30/10 ~ 04/29/11 ,&;.;..
I
09/26/11 N N
02/23/12 ~ 07/22/12
-12/19/12 -n)
05/18/13
..,
0 10/15/13 n)
""O 03/14/14 -=--08/11/14 0 -01/08/15 <
06/07/15 n) ..,
-11/04/15 ~ ...
04/02/16 = 08/30/16 n) ,_
01/27/17 ~
06/26/17 O" -11/23/17 = 04/22/18 ""O -09/19/18
02/16/19
07/16/19
12/13/19
05/11/20
10/08/20
03/07/21
08/04/21
01/01/22
05/31/22
10/28/22
03/27/23
08/24/23
01/21/24
06/19/24
Water Levels and Data over Time
White Mesa Mill -Well TW 4-23
Total or
Measuring Measured Total
Water Land Point Depth to Depth to Total
Elevation Surface Elevation Length Of Date Of Water Water Depth Of
(WL) (LSD) (MP) Riser (L) Monitoring (blw.MP) (blw.LSD) Well
5,605.77 5,607.37 1.60 116.4
5,538.89 09/13/07 68.48 66.88
5,538.80 10/10/07 68.57 66.97
5,539.25 11/30/07 68.12 66.52
5,539.49 12/11/07 67.88 66.28
5,539.19 01/08/08 68.18 66.58
5,539.44 02/18/08 67.93 66.33
5,539.54 03/26/08 67.83 66.23
5,539.71 04/23/08 67.66 66.06
5539.48 05/30/08 67.89 66.29
5,539.53 06/24/08 67.84 66.24
5,539.44 07/16/08 67.93 66.33
5,539.68 08/26/08 67.69 66.09
5,541.18 09/10/08 66.19 64.59
5,539.57 10/14/08 67.80 66.20
5,539.29 11/26/08 68.08 66.48
5,539.55 12/29/08 67.82 66.22
5,540.15 01/26/09 67.22 65.62
5,539.74 02/24/09 67.63 66.03
5,539.86 03/06/09 67.51 65.91
5,539.72 04/07/09 67.65 66.05
5,539.84 05/29/09 67.53 65.93
5,540.12 06/30/09 67.25 65.65
5,540.12 07/31/09 67.25 65.65
5,540.27 08/31/09 67.10 65.50
5,540.13 09/10/09 67.24 65.64
5,540.64 12/11/09 66.73 65.13
5,541.15 03/11/10 66.22 64.62
5,541.61 05/11/10 65.76 64.16
5,541.47 09/29/10 65.90 64.30
5,541.54 12/21/10 65.83 64.23
5,541.54 02/28/11 65.83 64.23
5,541.98 06/21/11 65.39 63.79
5,541.90 09/20/11 65.47 63.87
5,542.58 12/21/11 64.79 63.19
5,542.59 03/27/12 64.78 63.18
5,542.61 06/28/12 64.76 63.16
5,542.92 09/27/12 64.45 62.85
5,542.61 12/28/12 64.76 63.16
5,543.48 03/28/13 63.89 62.29
5,543.23 06/27/13 64.14 62.54
5,543.12 09/27/13 64.25 62.65
5,542.96 12/20/13 64.41 62.81
Water Levels and Data over Time
White Mesa Mill -Well TW 4-23
Total or
Measuring Measured Total
Water Land Point Depth to Depth to Total
Elevation Surface Elevation Length Of Date Of Water Water Depth Of
(WL) (LSD) (MP) Riser (L) Monitoring (blw.MP) (blw.LSD) Well
5,605.77 5,607.37 1.60 116.4
5,542.35 03/27/14 65.02 63.42
5,541.42 06/25/14 65.95 64.35
5,540.65 09/25/14 66.72 65.12
5,540.34 12/17/14 67.03 65.43
5,539.47 03/26/15 67.90 66.30
5,539.22 06/22/15 68.15 66.55
5,538.82 09/30/15 68.55 66.95
5,538.28 12/02/15 69.09 67.49
5,538.29 03/30/16 69.08 67.48
5,537.60 06/30/16 69.77 68.17
5,537.07 09/29/16 70.30 68.70
5,536.86 12/21/16 70.51 68.91
5,536.91 03/30/17 70.46 68.86
5,536.49 06/27/17 70.88 69.28
5,536.18 09/28/17 71.19 69.59
5,535.72 11/30/17 71.65 70.05
5,535.62 03/28/18 71.75 70.15
5,535.34 06/22/18 72.03 70.43
5,534.93 09/25/18 72.44 70.84
5,53~.64 12/17/18 72.73 71.13
5,534.23 03/25/19 73.14 71.54
5,534.22 06/24/19 73.15 71.55
5,534.01 08/12/19 73.36 71.76
5,533.51 11/18/19 73.86 72.26
5,533.26 02/10/20 74.11 72.51
5,532.76 05/04/20 74.61 73.01
5,532.33 09/22/20 75.04 73.44
5,532.30 12/30/20 75.07 73.47
5,532.32 03/11/21 75.05 73.45
5,531.71 06/24/21 75.66 74.06
5,531.63 08/13/21 75.74 74.14
5,531.77 12/30/21 75.60 74.00
5,531.17 02/10/22 76.20 74.60
5,531.73 06/28/22 75.64 74.04
5530.84 08/15/22 76.53 74.93
5530.58 11/17/22 76.79 75.19
5530.34 03/24/23 77.03 75.43
5530.51 06/26/23 76.86 75.26
'° 0 00 0
◄
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► ►
►
◄ ►
•
• ►
0 •
.
•
►
•
• ►
-J 0
' ~
•
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Depth Below Measuring Point (ft.)
►
~
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◄
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.
0\ 0
I
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0
w
0
'
N 0
'
-0
'
0
' 09/13/07
02/10/08
07/09/08
12/06/08
05/05/09
10/02/09
03/01/10
07/29/10
12/26/10
05/25/11
10/22/11
03/20/12
08/17/12
01/14/13
06/13/13
11/10/13
04/09/14
09/06/14
02/03/15
07/03/15
11/30/15
04/28/16
09/25/16
02/22/17
07/22/17
12/19/17
05/18/18
10/15/18
03/14/19
08/11/19
01/08/20
06/06/20
11/03/20
04/02/21
08/30/21
01/27/22
06/26/22
11/23/22
04/22/23
09/19/23
02/16/24
07/15/24
~ ~ ,I..
I N ~
~ ...... ~ "'t
~ ~ -= ...... =-0 -< ~ "'t
~ -· = ~ --~
C"' -= -= ,_,
Water Levels and Data over Time
White Mesa Mill -Well TW 4-24
Total or
Measuring Measured Total
Water Land Point Depth to Depth to Total
Elevation Surface Elevation Length Of Date Of Water Water Depth Of
(WL) (LSD) (MP) Riser (L) Monitoring (blw.MP) (blw.LSD) Well
5,625.70 5,627.83 2.13 114.8
5,570.61 09/13/07 57.22 55.09
5,570.53 10/10/07 57.30 55.17
5,57l.l6 l l/30/07 56.67 54.54
5,571.30 12/11/07 56.53 54.40
5,571.03 01/08/08 56.80 54.67
5,571.22 02/18/08 56.61 54.48
5,571.43 03/26/08 56.40 54.27
5,571.68 04/23/08 56.15 54.02
5571.52 05/30/08 56.31 54.18
5,571.34 06/24/08 56.49 54.36
5,571.28 07/16/08 56.55 54.42
5,571.34 08/26/08 56.49 54.36
5,571.23 09/10/08 56.60 54.47
5,57Ll2 10/14/08 56.71 54.58
5,570.95 l l/26/08 56.88 54.75
5,570.92 12/29/08 56.91 54.78
5,571.65 01/26/09 56.18 54.05
5,571.31 02/24/09 56.52 54.39
5,571.37 03/06/09 56.46 54.33
5,571.21 04/07/09 56.62 54.49
5,571.23 05/29/09 56.60 54.47
5,571.42 06/30/09 56.41 54.28
5,571.38 07/31/09 56.45 54.32
5,571.48 08/31/09 56.35 54.22
5,571.28 09/10/09 56.55 54.42
5,571.64 12/11/09 56.19 54.06
5,571.86 03/11/10 55.97 53.84
5,571.91 05/11/10 55.92 53.79
5,572.18 09/29/10 55.65 53.52
5,571.86 12/21/l 0 55.97 53.84
5,571.78 02/28/11 56.05 53.92
5,572.40 06/21/11 55.43 53.30
5,572.19 09/20/11 55.64 53.51
5,573.02 12/21/11 54.81 52.68
5,573.03 03/27/12 54.80 52.67
5,573.02 06/28/12 54.81 52.68
5,573.13 09/27/12 54.70 52.57
5,573.05 12/28/12 54.78 52.65
5,566.53 03/28/13 61.30 59.17
5,564.63 06/27/13 63.20 61.07
5,570.01 09/27/13 57.82 55.69
5,566.85 12/20/13 60.98 58.85
5,562.33 03/27/14 65.50 63.37
Water Levels and Data over Time
White Mesa Mill-Well TW4-24
Total or
Measuring Measured Total
Water Land Point Depth to Depth to Total
Elevation Surface Elevation Length Of Date Of Water Water Depth Of
(WL) (LSD) (MP) Riser (L) Monitoring (blw.MP) (blw.LSD) Well
5,625.70 5,627.83 2.13 114.8
5,563.43 06/25/14 64.40 62.27
5,563.43 09/25/14 64.40 62.27
5,560.97 12/17/14 66.86 64.73
5,561.95 03/26/15 65.88 63.75
5,565.38 06/22/15 62.45 60.32
5,562.61 09/30/15 65.22 63.09
5,560.91 12/02/15 66.92 64.79
5,563.69 03/30/16 64.14 62.01
5,565.64 06/30/16 62.19 60.06
5,565.35 09/29/16 62.48 60.35
5,563.33 12/21/16 64.50 62.37
5,565.27 03/30/17 62.56 60.43
5,565.86 06/27/17 61.97 59.84
5,565.21 09/28/17 62.62 60.49
5,559.24 11/30/17 68.59 66.46
5,564.78 03/28/18 63.05 60.92
5,564.83 06/22/18 63.00 60.87
5,565.47 09/24/18 62.36 60.23
5,549.72 12/17/18 78.11 75.98
5,559.52 03 /25/19 68.31 66.18
5,546.68 06/24/19 81.15 79.02
5,549.54 08/12/19 78.29 76.16
5,554.44 11/18/19 73.39 71.26
5,563.62 02/10/20 64.21 62.08
5,558.32 05/04/20 69.51 67.38
5,558.88 09/21/20 68.95 66.82
5,556.76 12/28/20 71.07 68.94
5,557.89 03/11/21 69.94 67.81
5,561.51 06/24/21 66.32 64.19
5,559.12 08/13/21. 68.71 66.58
5,560.64 12/30/21 67.19 65.06
5,556.44 02/10/22 71.39 69.26
5,558.22 06/28/22 69.61 67.48
5,558.62 08/15/22 69.21 67.08
5,558.14 11/17/22 69.69 67.56
5,560.03 03/24/23 67.80 65.67
5,560.22 06/26/23 67.61 65.48
'° 0 0
00 9
0
-..J 0 0
Depth Below Measuring Point (ft.)
0\ 0 0
V,
0 0
~ 0 0
w 0 0
N 0 0
-0 0
0
0
09/13/07
02/10/08
-07/09/08
12/06/08
05/05/09
10/02/09
03/01/10
07/29/10
12/26/10
05/25/11
-10/22/11
03/20/12 ~
-08/17/12 ~ ,I:;,..
01/14/13 I N
-06/13/13 ,I:;,..
11/10/13 ~
04/09/14 ..... ~ .,
-09/06/14 ~
-02/03/15 ~
"C
07/03/15 ..... =-
11/30/15 0
-04/28/16 < ~ .,
-09/25/16 ~ -· -02/22/17 a
07/22/17 ~ --12/19/17 ~
05/18/18 O" --10/15/18 a "C
03/14/19 --
-08/11/19
01/08/20
06/06/20
11/03/20
04/02/21
-08/30/21
01/27/22
06/26/22
11/23/22
-04/22/23
-09/19/23
02/16/24
07/15/24
Water Levels and Data over Time
White Mesa Mill -Well TW 4-25
Total or
Water Measuring Measured Total
Elevation Land Point Depth to Depth to Total
(WL) Surface Elevation Length Of Date Of Water Water Depth Of
(LSD) (MP) Riser (L) Monitorin~ (blw.MP) (blw.LSD) Well
5,642.82 5,644.91 2.09 136.7
5,601.86 09/13/07 43.05 40.96
5,601.89 10/10/07 43.02 40.93
5,602.57 11/30/07 42.34 40.25
5,602.82 12/11/07 42.09 40.00
5,601.94 01/08/08 42.97 40.88
5,599.13 02/18/08 45.78 43.69
5,597.11 03/26/08 47.80 45.71
5,595.51 04/23/08 49.40 47.31
5,594.42 05/30/08 50.49 48.40
5,594.26 06/24/08 50.65 48.56
5,586.67 07/16/08 58.24 56.15
5,594.17 08/26/08 50.74 48.65
5,594.23 09/10/08 50.68 48.59
5,594.12 10/14/08 50.79 48.70
5,594.06 11/26/08 50.85 48.76
5,594.87 12/29/08 50.04 47.95
5,595.89 01/26/09 49.02 46.93
5,596.27 02/24/09 48.64 46.55
5,596.47 03/06/09 48.44 46.35
5,596.74 04/07/09 48.17 46.08
5,597.55 05/29/09 47.36 45.27
5,598.11 06/30/09 46.80 44.71
5,598.22 07/31/09 46.69 44.60
5,598.52 08/31/09 46.39 44.30
5,598.49 09/10/09 46.42 44.33
5,599.48 12/11/09 45.43 43.34
5,599.75 03/11/10 45.16 43.07
5,599.63 05/11/10 45.28 43.19
5,598.68 09/29/10 46.23 44.14
5,598.66 12/21/10 46.25 44.16
5,598.18 02/28/11 46.73 44.64
5,598.61 06/21/11 46.30 44.21
5,598.08 09/20/11 46.83 44.74
5,598.23 12/21/11 46.68 44.59
5,597.41 03/27/12 47.50 45.41
5,597.41 06/28/12 47.50 45.41
5,595.60 09/27/12 49.31 47.22
5,597.41 12/28/12 47.50 45.41
5,597.43 03/28/13 47.48 45.39
5,587.61 06/27/13 57.30 55.21
5,585.91 09/27/13 59.00 56.91
5,561.00 12/20/13 83.91 81.82
Water Levels and Data over Time
White Mesa Mill -Well TW 4-25
Total or
Water Measuring Measure{! Total
Elevation Land Point Depth to Depth to Total
(WL) Surface Elevation Length Of Date Of Water Water Depth Of
(LSD) (MP) Riser (L) Monitoring (blw.MP) (blw.LSD) Well
5 642.82 5 644.91 2.09 136.7
5,584.79 03/27/14 60.12 58.03
5,582.44 06/25/14 62.47 60.38
5,583.95 09/25/14 60.96 58.87
5,581.13 12/17/14 63.78 61.69
5,587.40 03/26/15 57.51 55.42
5,581.91 06/22/15 63.00 60.91
5,581.40 09/30/15 63.51 61.42
5,578.42 12/02/15 66.49 64.40
5,579.42 03/30/16 65.49 63.40
5,579.25 06/30/16 65.66 63.57
5,579.68 09/29/16 65.23 63 .14
5,577.73 12/21/16 67.18 65.09
5,584.44 03 /30/17 60.47 58.38
5,580.19 06/27/17 64.72 62.63
5,573.63 09/28/17 71.28 69.19
5,577.88 11/30/17 67.03 64.94
5,543.71 03/28/18 101.20 99.11
5,575.26 06/22/18 69.65 67.56
5,578.78 09/24/18 66.13 64.04
5,567.86 12/17/18 77.05 74.96
5,572.46 03/25/19 72.45 70.36
5,571.58 06/24/19 73.33 71.24
5,572.15 08/12/19 72.76 70.67
5,572.66 11/18/19 ·12.25 70.16
5,572.77 02/10/20 72.14 70.05
5,572.46 05/04/20 72.45 70.36
5,575.17 09/21/20 69.74 67.65
5,574.42 12/28/20 70.49 68.40
5,574.90 03/11/21 70.01 67.92
5,575.01 06/24/21 69.90 67.81
5,575.66 08/13/21 69.25 67.16
5,578.11 12/30/21 66.80 64.71
5,578.07 02/10/22 66.84 64.75
5,574.87 06/28/22 70.04 67.95
5,574.46 08/15/22 70.45 68.36
5,574.96 11/17/22 69.95 67.86
5,574.82 03/24/23 70.09 68.00
5,573.09 06/26/23 71.82 69.73
--N 0 0 0
Depth Below Measuring Point (ft.)
00 0 0\ 0
.p..
0 N 0 0
09/13/07
02/10/08
07/09/08
12/06/08
05/05/09
10/02/09
03/01/10
07/29/10
-12/26/10
05/25/11
-10/22/11
03/20/12 ~
-08/17/12 ~ ,I;:..
01/14/13 I N
06/13/13 th
-11/10/13 ~
04/09/14 ..... ti) .,
09/06/14 0
02/03/15 ti)
"Cl
07/03/15 ..... =-
11/30/15 0
04/28/16 < ti) .,
-09/25/16 ~ -· 02/22/17 a
07/22/17 ti) -12/19/17 ~
05/18/18 O" -10/15/18 a "Cl
03/14/19 -
08/11/19
01/08/20
06/06/20
11/03/20
04/02/21
08/30/21
01/27/22
06/26/22
11/23/22
-04/22/23
09/19/23
-02/16/24
07/15/24
Water Levels and Data over Time
White Mesa Mill -Well TW 4-26
Total or
Measuring Measured Total
Water Land Point Date Of Depth to Depth to Total
Elevation Surface Elevation Length Of Monitoring Water Water Depth Of
(WL) (LSD) (MP) Riser (L) (blw.MP) (blw.LSD) Well
5,599.98 5,601.68 1.70 87.7
5,536.90 06/14/10 64.78 63.08
5,536.95 09/29/10 64.73 63 .03
5,537.17 12/21/10 64.51 62.81
5,537.16 02/28/11 64.52 62.82
5,537.57 06/21/11 64.11 62.41
5,537.59 09/20/11 64.09 62.39
5,538.16 12/21/11 63.52 61.82
5,538.18 03/27/12 63.50 61.80
5538.23 06/28/12 63.45 61.75
5,538.57 09/27/12 63 .11 61.41
5,538.20 12/28/12 63.48 61.78
5,539.13 03/28/13 62.55 60.85
5,539.00 06/27/13 62.68 60.98
5,538.94 09/27/13 62.74 61.04
5,538.97 12/20/13 62.71 61.01
5,538.53 03/27/14 63.15 61.45
5,537.85 06/25/14 63.83 62.13
5,537.33 09/25/14 64.35 62.65
5,537.14 12/17/14 64.54 62.84
5,536.43 03/26/15 65.25 63.55
5,536.16 06/22/15 65.52 63.82
5,535.76 09/30/15 65.92 64.22
5,535.23 12/02/15 66.45 64.75
5,535.15 03/30/16 66.53 64.83
5,534.61 06/30/16 67.07 65.37
5,534.12 09/29/16 67.56 65.86
5,533.96 12/21/16 67.72 66.02
5,533.97 03/30/17 67.71 66.01
5,533.66 06/27/17 68.02 66.32
5,533.43 09/28/17 68.25 66.55
5,533.39 11/30/17 68.29 66.59
5,532.99 03/28/18 68.69 66.99
5,532.74 06/22/18 68.94 67.24
5,532.32 09/25/18 69.36 67.66
5,532.04 12/17/18 69.64 67.94
5,531.48 03/25/19 70.20 68.50
5,531.20 06/24/19 70.48 68.78
5,530.96 08/12/19 70.72 69.02
5,530.14 11/18/19 71.54 69.84
5,529.73 02/10/20 71.95 70.25
5,529.08 05/04/20 72.60 70.90
5,528.48 09/22/20 73.20 71.50
5,528.42 12/30/20 73.26 71.56
Water Levels and Data over Time
White Mesa Mill-Well TW4-26
Total or
Measuring Measured Total
Water Land Point Date Of Depth to Depth to Total
Elevation Surface Elevation Length Of Monitoring Water Water Depth Of
(WL) (LSD) (MP) Riser (L) (blw.MP) (blw.LSD) Well
5,599.98 5,601.68 1.70 87.7
5,528.39 03/11/21 73 .29 71.59
5,527.76 06/24/21 73.92 72.22
5,527.73 08/13/21 73 .95 72.25
5,527.80 12/30/21 73 .88 72.18
5,527.26 02/10/22 74.42 72.72
5,527.73 06/28/22 73.95 72.25
5,526.86 08/15/22 74.82 73.12
5,526.62 11/17/22 75.06 73.36
5,526.45 03 /24/23 75.23 73.53
5,526.35 06/26/23 75.33 73.63
00 ~ 0 0
-J 0
0 0
'
◄
~
' I
◄ ►
' '►
◄ ►
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'
◄►
►
►
◄
'
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' 0
' ◄
►
►
◄►
◄'
►
'
'
Depth Below Measuring Point (ft.)
0\ 0
0 0
'
V,
0
0 0
'
.j:,,.
0
0 0
'
w 0
0 0
'
N 0
0 0
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-
-
-
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-
-
,..
,..
-
-
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t-
-
-
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,..
-
-
-
-
-
,..
-
-
08/25/09
01/22/10
06/21/10
11/18/10
04/17/11
09/14/11
02/11/12
07/10/12
12/07/12
05/06/13
10/03/13
03/02/14
07/30/14
12/27/14
05/26/15
10/23/15
03/21/16
08/18/16
01/15/17
06/14/17
11/11/17
04/10/18
09/07/18
02/04/19
07/04/19
12/01/19
04/29/20
09/26/20
02/23/21
07/23/21
12/20/21
05/19/22
10/16/22
03/15/23
08/12/23
01/09/24
06/07/24
~ ~ ,I..
I N O'I
~ ...... ~
""l
t:,
~
"C ...... =-0 -< ~
""l
~ ... a ~ -~
"a' -a
"C -
Water Levels and Data over Time
White Mesa Mill -Well TW4-27
Total or
Measuring Measured Total
Water Land Point Depth to Depth to Total
Elevation Surface Elevation Length Of Date Of Water Water Depth Of
(WL) (LSD) (MP) Riser (L) Monitoring (blw.MP) (blw.LSD) Well
5,606.19 5,607.94 1.75 95.75
5,517.78 12/21/11 90.16 88.41
5,524.84 03/27/12 83.10 81.35
5,524.93 06/28/12 83.01 81.26
5,525.59 09/27/12 82.35 80.60
5,524.86 12/28/12 83.08 81.33
5,526.37 03/28/13 81.57 79.82
5,526.29 06/27/13 81.65 79.90
5,527.04 09/27/13 80.90 79.15
5,527.14 12/20/13 80.80 79.05
5,527.55 03/27/14 80.39 78.64
5,527.43 06/25/14 80.51 78.76
5,527.48 09/25/14 80.46 78.71
5,527.81 12/17/14 80.13 78.38
5,527.71 03/26/15 80.23 78.48
5,527.86 06/22/15 80.08 78.33
5,528.13 09/30/15 79.81 78.06
5,527.92 12/02/15 80.02 78.27
5,528.59 03/30/16 79.35 77.60
5,528.34 06/30/16 79.60 77.85
5,528.32 09/29/16 79.62 77.87
5,528.44 12/21/16 79.50 77.75
5,528.85 03/30/17 79.09 77.34
5,528.81 06/27/17 79.13 77.38
5,528.84 09/28/17 79.10 77.35
5,528.85 11/29/17 79.09 77.34
5,529.14 03/28/18 78.80 77.05
5,529.06 06/21/18 78.88 77.13
5,529.18 09/25/18 78.76 77.01
5,529.09 12/17/18 78.85 77.10
5,528.96 03/25/19 78.98 77.23
5,529.20 06/24/19 78.74 76.99
5,529.24 08/12/19 78.70 76.95
5,529.12 11/18/19 78.82 77.07
5,529.29 02/10/20 78.65 76.90
5,528.97 05/04/20 78.97 77.22
5,528.89 09/22/20 79.05 77.30
5,529.12 12/30/20 78.82 77.07
5,529.21 03/11/21 78.73 76.98
5,528.90 06/24/21 79.04 77.29
5,528.76 08/13/21 79.18 77.43
5,529.06 12/30/21 78.88 77.13
5,528.79 02/10/22 79.15 77.40
5,528.85 06/28/22 79.09 77.34
5,528.69 08/15/22 79.25 77.50
5,528.49 11/17/22 79.45 77.70
5528.49 03/24/23 79.45 77.70
Water Levels and Data over Time
White Mesa Mill -Well TW4-27
Total or
Measuring Measured Total
Water Land Point Depth to Depth to Total
Elevation Surface Elevation Length Of Date Of Water Water Depth Of
(WL) (LSD) (MP) Riser (L) Monitoring (blw.MP) (blw.LSD) Well
5,606.19 5,607.94 1.75 95.75
5528.69 06/26/23 79.25 77.50
\.0 N b 0
\.0 0 b 0
Depth Below Measuring Point (ft.)
00 00
b 0
00 C"I
b 0
00 .p.
b 0
00 00 --.J N 0 00
b b 0 0 0 0
04/17/11
09/14/11
02/11/12
07/10/12
12/07/12
05/06/13
10/03/13
03/02/14
07/30/14
12/27/14
05/26/15 ~
10/23/15 ~ .i.. I
03/21/16 N
.....:a
08/18/16 ~
01/15/17 ...... ~ .,
06/14/17 0 ~
11/11/17 "C ...... =-04/10/18 0 -< 09/07/18 ~ .,
02/04/19 ~ ....
07/04/19 = ~ --12/01/19 ~
04/29/20 C"' -= 09/26/20 "C -02/23/21
07/23/21
12/20/21
05/19/22
10/16/22
03/15/23
08/12/23
01/09/24
06/07/24
Water Levels and Data over Time
White Mesa Mill-Well TW4-28
Total or
Measuring Measured Total
Water Land Point Depth to Depth to Total
Elevation Surface Elevation Length Of Date Of Water Water Depth Of
(WL) (LSD) (MP) Riser (L) Monitoring (blw.MP) (blw.LSD) Well
5,613.52 5,617.00 3.48 108.48
5,580.69 03/28/13 36.31 32.83
5,580.30 06/27/13 36.70 33.22
5,580.35 09/27/13 36.65 33.17
5,580.25 12/20/13 36.75 33.27
5,579.83 03/27/14 37.17 33.69
5,579.21 06/25/14 37.79 34.31
5,578.84 09/25/14 38.16 34.68
5,578.72 12/17/14 38.28 34.80
5,578.11 03/26/15 38.89 35.41
5,577.83 06/22/15 39.17 35.69
5,577.56 09/30/15 39.44 35.96
5,577.27 12/02/15 39.73 36.25
5,577.25 03/30/16 39.75 36.27
5,576.75 06/30/16 40.25 36.77
5,576.36 09/29/16 40.64 37.16
5,576.13 12/21/16 40.87 37.39
5,575.92 03/30/17 41.08 37.60
5,575.50 06/27/17 41.50 38.02
5,575.08 09/28/17 41.92 38.44
5,574.80 11/29/17 42.20 38.72
5,574.36 03/28/18 42.64 39.16
5,573.92 06/22/18 43.08 39.60
5,572.37 09/25/18 44.63 41.15
5,571.74 12/17/18 45.26 41.78
5,570.65 03/25/19 46.35 42.87
5,570.60 06/24/19 46.40 42.92
5,570.24 08/12/19 46.76 43.28
5,569.87 11/18/19 47.13 43.65
5,569.89 02/10/20 47.11 43.63
5,569.01 05/04/20 47.99 44.51
5,568.41 09/22/20 48.59 45.11
5,568.29 12/30/20 48.71 45.23
5,568.32 03/11 /21 48.68 45.20
5,567.79 06/24/21 49.21 45.73
5,567.64 08/13/21 49.36 45.88
5,567.89 12/30/21 49.11 45.63
5,567.24 02/10/22 49.76 46.28
5,567.75 06/28/22 49.25 45.77
5,567.73 08/15/22 49.27 45.79
5,567.42 11/17/22 49.58 46.10
5,567.16 03/24/23 49.84 46.36
5,566.74 06/26/23 50.26 46.78
0\ 0 0 0
Depth Below Measuring Point (ft.)
v, .i:,. w N
0 0 0 0 o o o o 0 0 0 0
.....
0
0 0
0
0 0
L 07/10/12
12/07/12
05/06/13
10/03/13
03/02/14
07/30/14
12/27 /14
05/26/15
10/23/15 ~ ~
-03/21/16 """ I N
-08/18/16 00
~ 01/15/17 ...,.
('I)
06/14/17
.,
~
-11/11/17 ('I)
"'O ...,.
04/10/18 =-0
-09/07/18 -< ('I) .,
-02/04/19 ~ ...
-07/04/19 = ('I) --12/01/19 ~
04/29/20 C"' -= 09/26/20 "'O ---02/23/21
07/23/21
12/20/21
05/19/22
10/16/22
03/15/23
08/12/23
01/09/24
Water Levels and Data over Time
White Mesa Mill -Well TW 4-29
Total or
Measuring Measured
Water Land Point Depth to Total Depth Total
Elevation Surface Elevation Length Of Date Of Water to Water Depth Of
(WL) (LSD) (MP) Riser (L) Monitoring (blw.MP) (blw.LSD) Well
5,602.56 5,606.04 3.48 94.48
5,533.98 03/28/13 72.06 68.58
5,533.84 06/27/13 72.20 68.72
5,534.27 09/27/13 71.77 68.29
5,534.43 12/20/13 71.61 68.13
5,534.32 03/27/14 71.72 68.24
5,533.85 06/25/14 72.19 68.71
5,533.53 09/25/14 72.51 69.03
5,533.60 12/17114 72.44 68.96
5,533.04 03/26/15 73.00 69.52
5,532.93 06/22/15 73. l l 69.63
5,532.79 09/30/15 73.25 69.77
5,532.34 12/02/15 73.70 70.22
5,532.54 03/30/16 73.50 70.02
5,532.01 06/30/16 74.03 70.55
5,531.58 09/29/16 74.46 70.98
5,531.49 12/2l/16 74.55 71.07
5,531.60 03/30/17 74.44 70.96
5,531.24 06/27/17 74.80 71.32
5,530.95 09/28/17 75.09 71.61
5,530.83 11/29/17 75.21 71.73
5,530.74 03/28/18 75.30 71.82
5,530.54 06/2l/18 75.50 72.02
5,530.28 09/25/18 75.76 72.28
5,530.1 l 12/17/18 75.93 72.45
5,527.99 03/25/19 78.05 74.57
5,529.77 06/24/19 76.27 72.79
5,529.64 08/12/19 76.40 72.92
5,529.23 1 l/18/19 76.81 73.33
5,529.10 02/10/20 76.94 73.46
5,528.51 05/04/20 77.53 74.05
5,528.21 09/22/20 77.83 74.35
5,528.13 12/30/20 77.91 74.43
5,528.13 03/11/21 77.91 74.43
5,527.67 06/24/21 78.37 74.89
5,527.56 08/13/21 78.48 75.00
5,527.84 12/30/21 78.20 74.72
5,527.28 02/10/22 78.76 75.28
5,527.66 06/28/22 78.38 74.90
5,526.89 08/15/22 79.15 75.67
5,526.68 11/17/22 79.36 75.88
5526.57 03/24/23 79.47 75.99
5526.43 06/26/23 79.61 76.13
00 -0 0
00 0
0 0
Depth Below Measuring Point (ft.)
-.J -.J -.J -.J -.J -.J \Cl 00 -.J O"I VI _.,. o o o o o o 0 0 0 0 0 0
-.J w g.
-.J N
0 0
-.J -0 0
07/10/12
12/07/12
05/06/13
-10/03/13
03/02/14
-07/30/14
12/27/14
-05/26/15
10/23/15 ~ ~
-03/21/16 ~ I N
08/18/16 \0
~ -01/15/17 ...... ~
-06/14/17 '"'I
~ ~ -11/11/17 "C ...... =-04/10/18 0
09/07/18 < ~ '"'I
02/04/19 ~ ...
07/04/19 9
~ -12/01/19 ~
O"'
04/29/20 -9
09/26/20 "C -
02/23/21
07/23/21
12/20/21
05/19/22
10/16/22
03/15/23
08/12/23
01/09/24
Water Levels and Data over Time
White Mesa Mill -Well TW 4-30
Total or
Measuring Measured Total
Water Land Point Depth to Depth to Total
Elevation Surface Elevation Length Of Date Of Water Water Depth Of
(WL) (LSD) (MP) Riser (L) Monitoring (blw.MP) (blw.LSD) Well
5 599.33 5,602.81 3.48 93.48
5,524.78 03/28/13 78.03 74.55
5,524.79 06/27/13 78.02 74.54
5,525.54 09/27/13 77.27 73.79
5,525.81 12/20/13 77.00 73.52
5,525.98 03/27/1 4 76.83 73.35
5,525.91 06/25/14 76.90 73.42
5,526.00 09/25/14 76.81 73.33
5,526.41 12/17/14 76.40 72.92
5,526.23 03/26/15 76.58 73.10
5,526.48 06/22/15 76.33 72 .85
5,526.74 09/30/15 76.07 72.59
5,526.56 12/02/15 76.25 72.77
5,527.26 03/30/1 6 75.55 72.07
5,527.04 06/30/16 75.77 72.29
5,526.97 09/29/16 75.84 72.36
5,527.17 12/21/16 75.64 72.16
5,527.65 03/30/17 75.16 71.68
5,527.54 06/27/17 75.27 71.79
5,527.56 09/28/17 75.25 71.77
5,527.59 11/29/17 75.22 71.74
5,527.88 03/28/18 74.93 71.45
5,527.86 06/21/18 74.95 71.47
5,525.76 09/25/18 77.05 73.57
5,527.87 12/17/18 74.94 71.46
5,527.69 03/25/19 75.12 71.64
5,528.01 06/24/19 74.80 71.32
5,528.04 08/12/19 74.77 71.29
5,527.94 11/18/19 74.87 71.39
5,528.12 02/10/20 74.69 71.21
5,527.73 05/04/20 75.08 71.6
5,527.75 09/22/20 75.06 71.58
5,527.90 12/30/20 74.91 71.43
5,527.96 03 /11/21 74.85 71.37
5,527.75 06/24/21 75.06 71.58
5,527.65 08/13/21 75.16 71.68
5,527.88 12/30/21 74.93 71.45
5,527.63 02/10/22 75.18 71.7
5,527.77 06/28/22 75.04 71.56
5,527.50 08/15/22 75.31 71.83
5,527.36 11/17/22 75.45 71.97
5,527.35 03/24/23 75.46 71.98
5,527.50 06/26/23 75.31 71.83
Depth Below Measuring Point (ft.)
-.] -.] -.] -.] -.] -.] -.] -.] -.]
?O 00 -.] -.] ?' 0\ u, u, 7'"-u, 0 u, 0 u, 0 u, 0 u,
0 0 0 0 0 0 0 0 0
L 07/10/12
-12/07/12
05/06/13
10/03/13
03/02/14
07/30/14
12/27/14
-05/26/15 ~
,_ 10/23/15 ~
""" I -03/21/16 ~ =
08/18/16 ~
01/15/17 ...... ~ "1
-06/14/17 ~ ~
11/11/17 "Cl ...... =--04/10/18 0 < -09/07/18 ~ "1
-02/04/19 ~ ....
= 07/04/19 ~ ,_
12/01/19 ~
C"'
-04/29/20 -= -09/26/20 "Cl -
-02/23/21
-07/23/21
12/20/21
05/19/22
10/16/22
03/15/23
08/12/23
01/09/24
Water Levels and Data over Time
White Mesa Mill -Well TW 4-31
Total or
Measuring Measured Total
Water Land Point De.pth to Depth to Total
Elevation Surface Elevation Length Of Date Of Water Water Depth Of
(WL) (LSD) (MP) Riser (L) Monitoring (blw.MP) (blw.LSD) Well
5,601.10 5,604.58 3.48 107.48
5,520.17 03/28/13 84.41 80.93
5,520.36 06/27/13 84.22 80.74
5,521.22 09/27/13 83.36 79.88
5,521.81 12/20/13 82.77 79.29
5,522.25 03/27/14 82.33 78.85
5,522.32 06/25/14 82.26 78.78
5,522.64 09/25/14 81.94 78.46
5,523.27 12/17/14 81.31 77.83
5,523.33 03/26/15 81.25 77.77
5,523.82 06/22/15 80.76 77.28
5,524.34 09/30/15 80.24 76.76
5,524.29 12/02/15 80.29 76.81
5,525.32 03/30/16 79.26 75.78
5,525.33 06/30/16 79.25 75.77
5,525.43 09/29/16 79.15 75.67
5,525.81 12/21/16 78.77 75.29
5,526.48 03/30/17 78.10 74.62
5,526.53 06/30/17 78.05 74.57
5,526.68 09/28/17 77.90 74.42
5,526.82 11/29/17 77.76 74.28
5,527.28 03/28/18 77.30 73.82
5,527.36 06/21/18 77.22 73.74
5,529.67 09/25/18 74.91 71.43
5,527.58 12/17/18 77.00 73.52
5,527.53 03/25/19 77.05 73.57
5,527.94 06/24/19 76.64 73.16
5,528.03 08/12/19 76.55 73.07
5,528.02 11/18/19 76.56 73.08
5,528.30 02/10/20 76.28 72.80
5,528.01 05/04/20 76.57 73.09
5,528.13 09/22/20 76.45 72.97
5,528.41 12/30/20 76.17 72.69
5,528.59 03/11/21 75.99 72.51
5,528.34 06/24/21 76.24 72.76
5,528.17 08/13/21 76.41 72.93
5,528.49 12/30/21 76.09 72.61
5,528.36 02/10/22 76.22 72.74
5,528.30 06/28/22 76.28 72.80
5,528.30 08/15/22 76.28 72.80
5,528.15 11/17/22 76.43 72.95
5,528.64 03/24/23 75.94 72.46
5,528.48 06/26/23 76.10 72.62
Depth Below Measuring Point (ft.)
00 00 00 00 --.J --.J --.J
°' ~ N 0 00 °' ~ 0 0 0 0 0 0 0
0 0 0 0 0 0 0
L 07/10/12
12/07/12
05/06/13
10/03/13
03/02/14
07/30/14
12/27/14 ~
05/26/15 ~ ~
10/23/15 1· w
"'""' 03/21/16 ~ 08/18/16 ...... ~ '"'l
01/15/17 ~ ~ 06/14/17 "C ......
11/11/17 =-0
04/10/18 < ~ '"'l
09/07/18 ~ -· 02/04/19 9 ~
07/04/19 -~
12/01/19 O"' -04/29/20 9
"C -09/26/20
02/23/21
07/23/21
12/20/21
05/19/22
10/16/22
03/15/23
08/12/23
01/09/24
Water Levels and Data over Time
White Mesa Mill -Well TW 4-32
Mea uring Total or Total Water Land Measured Total
Elevation Surface Point Length Of Date Of Depth to Depth to Depth Of
(WL) (LSD) Elevation Riser (L) Monitoring Water Water Well (MP) {blw.MP} (blw.LSD)
5,610.20 5,611.84 1.64 114.64
5,564.43 09/27/13 47.41 45.77
5,563.74 12/20/13 48.10 46.46
5,563.24 . 03/27/14 48.60 46.96
5,562.43 06/25/14 49.41 47.77
5,561.90 09/25/14 49.94 48.30
5,560.93 12/17114 50.91 49.27
5,561.35 03/26/15 50.49 48.85
5,561.15 06/22/15 50.69 49.05
5,560.96 09/30/15 50.88 49.24
5,560.58 12/02/15 51.26 49.62
5,560.85 03/30/16 50.99 49.35
5,560.25 06/30/16 51.59 49.95
5,559.69 09/29/16 52.15 50.51
5,559.75 12/21/16 52.09 50.45
5,560.14 03/30/17 51.70 50.06
5,559.44 06/27/17 52.40 50.76
5,558.99 09/28/17 52.85 51.21
5,558.84 11/29/17 53.00 51.36
5,558.85 03/28/18 52.99 51.35
5,558.52 06/22/18 53.32 51.68
5,557.92 09/25/18 53.92 52.28
5,557.89 12/17/18 53.95 52.31
5,557.24 03/25/19 54.60 52.96
5,557.41 06/24/19 54.43 52.79
5,557.03 08/12/19 54.81 53.17
5,556.86 11/18/19 54.98 53.34
5,557.04 02/10/20 54.80 53.16
5,556.29 05/04/20 55.55 53.91
5,555.99 09/22/20 55.85 54.21
5,555.99 12/30/20 55.85 54.21
5,556.19 03/11/21 55.65 54.01
5,555.54 06/24/21 56.30 54.66
5,555.41 08/13/21 56.43 54.79
5,555.56 12/30/21 56.28 54.64
5,555.23 02/10/22 56.61 54.97
5,555.56 06/28/22 56.28 54.64
5,554.76 08/15/22 57.08 55.44
5,554.52 11/17/22 57.32 55.68
5555.13 03/24/23 56.71 55.07
5554.53 06/26/23 57.31 55.67
-..J 0 0 0
O'I 0 0 0
'
•
i
◄
►
0
►
►
►
'►
j
► ◄ ♦
► ◄
Depth Below Measuring Point (ft.)
◄
•
◄
VI 0
0 0
'
►
►
◄
◄►
►
.j::,.
0
0 0
v-)
0
0 0
N 0
0 0
'
0
0 0
0
0 0
12/07/12
05/06/13
10/03/13
03/02/14
07/30/14
12/27/14
05/26/15
10/23/15
03/21/16
08/18/16
01/15/17
06/14/17
11/11/17
04/10/18
09/07/18
02/04/19
07/04/19
12/01/19
04/29/20
09/26/20
02/23/21
07/23/21
12/20/21
05/19/22
10/16/22
03/15/23
08/12/23
01/09/24
~ ~ ,I:..
I ~ N
~ ...... ~ .,
~ ~ "Cl ...... =-0 < ~ .,
~ ....
9
~ -~
'a' -9 "Cl -
Water Levels and Data over Time
White Mesa Mill -Well TW 4-33
Total or
Measuring Measured Total
Water Land Point Depth to Depth to Total
Elevation Surface Elevation Length Of Date Of Water Water Depth Of
(WL) (LSD) (MP) Riser (L) Monitoring (blw.MP) (blw.LSD) Well
5,605.20 5,606.73 1.53 86.23
5,536.70 09/27/13 70.03 68.50
5,536.62 12/20/13 70.11 68.58
5,536.49 03/27/14 70.24 68.71
5,536.06 06/25/14 70.67 69.14
5,535.73 09/25/14 71.00 69.47
5,535.73 12/17/14 71.00 69.47
5,535.14 03/26/15 71.59 70.06
5,534.98 06/22/15 71.75 70.22
5,534.81 09/30/15 71.92 70.39
5,534.34 12/02/15 72.39 70.86
5,534.33 03/30/16 72.40 70.87
5,533.90 06/30/16 72.83 71.30
5,533.48 09/29/16 73.25 71.72
5,533.39 12/21/16 73.34 71.81
5,533.28 03/30/17 73.45 71.92
5,533.01 06/27/17 73.72 72.19
5,532.67 09/28/17 74.06 72.53
5,532.53 11/29/17 74.20 72.67
5,532.37 03/28/18 74.36 72.83
5,532.13 06/21/18 74.60 73.07
5,531.82 09/25/18 74.91 73.38
5,531.61 12/17/18 75.12 73.59
5,531.14 03/25/19 75.59 74.06
5,531.08 06/24/19 75.65 74.12
5,530.98 08/12/19 75.75 74.22
5,530.45 11/18/19 76.28 74.75
5,530.22 02/10/20 76.51 74.98
5,529.68 05/04/20 77.05 75.52
5,529.30 09/22/20 77.43 75.90
5,529.15 12/30/20 77.58 76.05
5,529.07 03/11/21 77.66 76.13
5,528.64 06/24/21 78.09 76.56
5,528.48 08/13/21 78.25 76.72
5,528.74 12/30/21 77.99 76.46
5,528.18 02/10/22 78.55 77.02
5,528.57 06/28/22 78.16 76.63
5,527.78 08/15/22 78.95 77.42
5,527.65 11/17/22 79.08 77.55
5,527.34 03/24/23 79.39 77.86
5,527.28 06/26/23 79.45 77.92
Depth Below Measuring Point (ft.)
00 -..J -..J -..J -..J -..J 0\ 0 00 0\ .j::. tv 0 00
0 0 0 0 0 0 0 0 0 0 0 0 0 0
12/07/12
05/06/13
10/03/13
-03/02/14
07/30/14
12/27/14
05/26/15
~
10/23/15 ~ ,I::..
03/21/16 I ~ ~
08/18/16 ~ 01/15/17 .... ~ ""l 06/14/17 e,
~
-11/11/17 "C .... =-04/10/18 0
09/07/18 < ~ ""l
02/04/19 ~ ...
07/04/19 a ~ -12/01/19 ~
C"'
04/29/20 -a
09/26/20 "C -
-02/23/21
-07/23/21
-12/20/21
05/19/22
10/16/22
03/15/23
08/12/23
01/09/24
Water Levels and Data over Time
White Mesa Mill -Well TW 4-34
Total or
Measuring Measured Total
Water Land Point Depth to Depth to Total
Elevation Surface Elevation Length Of Date Of Water Water Depth Of
(WL) (LSD) (MP) Riser (L) Monitoring (blw.MP) (blw.LSD) Well
5,601.60 5,603 .34 1.74 95.74
5,534.04 09/27/13 69.30 67.56
5,534.14 12/20/13 69.20 67.46
5,533.89 03/27/14 69.45 67.71
5,533.32 06/25/14 70.02 68.28
5,532.94 09/25/14 70.40 68.66
5,532.99 12/17/14 70.35 68.61
5,532.37 03/26/15 70.97 69.23
5,532.24 06/22/15 71.10 69.36
5,532.08 09/30/15 71.26 69.52
5,531.79 12/02/15 71.55 69.81
5,531 .80 03/30/1 6 71.54 69.80
5,531.28 06/30/16 72.06 70.32
5,530.87 09/29/16 72.47 70.73
5,530.74 12/21/16 72.60 70.86
5,530.79 03/30/17 72.55 70.81
5,530.43 06/27/17 72.91 71.17
5,530.12 09/28/17 73.22 71.48
5,530.01 11/29/17 73.33 71.59
5,529.84 03/28/18 73.50 71.76
5,529.64 06/21/18 73.70 71.96
5,529.39 09/25/18 73.95 72.21
5,529.23 12/17/18 74.11 72.37
5,528.83 03/25/19 74.51 72.77
5,528.84 06/24/19 74.50 72.76
5,528.75 08/12/19 74.59 72.85
5,528.30 11/18/19 75.04 73.30
5,528.18 02/10/20 75.16 73.42
5,527.62 05/04/20 75.72 73.98
5,527.28 09/22/20 76.06 74.32
5,527.22 12/30/20 76.12 74.38
5,527.10 03/11/2 l 76.24 74.50
5,526.73 06/24/21 76.61 74.87
5,526.63 08/13/21 76.71 74.97
5,526.78 12/30/21 76.56 74.82
5,526.26 02/10/22 77.08 75.34
5,525.76 06/28/22 77.58 75.84
5,525.83 08/15/22 77.51 75.77
5,525.67 11/17/22 77.67 75.93
5,525.37 03/24/23 77.97 76.23
5,525.49 06/26/23 77.85 76.11
vl/LZ/LO ~-----.---.....------.-----,-------,---r------r--------.----r--~-----.
£Z/~I/£0
lZ/1£/0l
-Q. e 0Z/81/90 -,.Q
¢: --~ e .... 61/t0/ZO ~
I,..
~ > 0 -= ... l l/ZZ/60 -Q.
~ ~
I,..
~ ... ~ 91/0I/~0 "" f"')
I "" ~ ~
tl/LZ/Zl
£1/tI/80 -
Zl/10/t0 ,
0 0 0 0 0 0 0 0 0 0 0 0 ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ 0 0
00 0\ 0 ,-N (:') 'tj" V) I.O r-00 0\
I.O \0 r-r-r-r-r-r-r-r-r-r-
(·:y:) lll!Od ~upns-egw .MOJ:)S: qidgG
Water Levels and Data over Time
White Mesa Mill -Well TW 4-35
Total or
Measuring Measured Total
Water Land Point Depth to Depth to Total
Elevation Surface Elevation Length Of Date Of Water Water Depth Of
(WL) (LSD) (MP) Riser (L) Monitoring (blw.MP) (blw.LSD) Well
5,598.67 5,599.87 1.20 86.5
5,525.52 9/25/2014 74.35 73.15
5,525.72 12/17/2014 74.15 72.95
5,525.56 3/26/2015 74.31 73.11
5,525.67 6/22/2015 74.20 73.00
5,525.81 9/30/2015 74.06 72.86
5,525.57 12/2/2015 74.30 73.10
5,526.01 3/30/2016 73.86 72.66
5,525.75 6/30/2016 74.12 72.92
5,525.57 9/29/2016 74.30 73.10
5,525.62 12/21/2016 74.25 73.05
5,525.87 3/30/2017 74.00 72.80
5,525.70 6/27/2017 74.17 72.97
5,525.57 9/28/2017 74.30 73.10
5,525.56 11/29/2017 74.31 73.11
5,525.64 3/28/2018 74.23 73.03
5,525.56 6/21/2018 74.31 73.11
5,525.46 9/25/2018 74.41 73.21
5,525.37 12/17/2018 74.50 73.30
5,525.12 3/25/2019 74.75 73.55
5,525.35 6/24/2019 74.52 73.32
5,525.31 8/12/2019 74.56 73.36
5,525.12 11/18/2019 74.75 73.55
5,525.17 2/10/2020 74.70 73.50
5,524.80 5/4/2020 75.07 73.87
5,524.71 9/22/2020 75.16 73.96
5,524.82 12/30/2020 75.05 73.85
5,524.49 3/11/2021 75.38 74.18
5,524.52 6/24/2021 75.35 74.15
5,524.45 8/13/2021 75.42 74.22
5,524.58 12/30/2021 75.29 74.09
5,524.30 2/10/2022 75.57 74.37
5,524.47 6/28/2022 75.40 74.20
5,524.09 8/15/2022 75.78 74.58
5,523.89 11/17/2022 75.98 74.78
5,523.80 3/24/2023 76.07 74.87
5,523.95 6/26/2023 75.92 74.72
£Z/~l/£0
lZ/1£/0l ,_ c..
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("y) lll!Od 2upnSB;;JW MO{;;JS: qid;;ia
Water Levels and Data over Time
White Mesa Mill -Well TW 4-36
Total or
Measuring Measured Total
Water Land Point Depth to Depth to Total
Elevation Surface Elevation Length Of Date Of Water Water Depth Of
(WL) (LSD) (MP) Riser (L) Monitoring (blw.MP) (blw.LSD) Well
5,615.18 5,616.59 1.41 99.41
5,559.14 09/25/14 57.45 56.04
5,559.77 12/17/14 56.82 55.41
5,559.79 03/26/15 56.80 55.39
5,560.08 06/22/15 56.51 55.10
5,560.18 09/30/15 56.41 55.00
5,559.95 12/02/15 56.64 55.23
5,560.53 03/30/16 56.06 54.65
5,560.20 06/30/16 56.39 54.98
5,560.00 09/29/16 56.59 55.18
5,560.04 12/21/16 56.55 55.14
5,560.43 03/30/17 56.16 54.75
5,560.26 06/27/17 56.33 54.92
5,560.12 09/28/17 56.47 55.06
5,560.07 11/29/17 56.52 55.11
5,560.18 03/28/18 56.41 55 .00
5,560.11 06/22/18 56.48 55.07
5,560.14 09/25/18 56.45 55.04
5,559.78 12/17/18 56.81 55.40
5,559.43 03/25/19 57.16 55.75
5,559.61 06/24/19 56.98 55.57
5,559.55 08/12/19 57.04 55.63
5,559.28 11/18/19 57.31 55.90
5,559.32 02/10/20 57.27 55.86
5,558.94 05/04/20 57.65 56.24
5,558.64 09/22/20 57.95 56.54
5,558.76 12/30/20 57.83 56.42
5,558.84 03/11/21 57.75 56.34
5,558.44 06/24/21 58.15 56.74
5,558.31 08/13/21 58.28 56.87
5,558.53 12/30/21 58.06 56.65
5,558.09 02/10/22 58.50 57.09
5,558.46 06/28/22 58.13 56.72
5,557.86 08/15/22 58.73 57.32
5,557.72 11/17/22 58.87 57.46
5,558.03 03/24/23 58.56 57.15
5,557.79 06/26/23 58.80 57.39
-Q,.
5 -.,Q
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£Z/~l/£0
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tl/LZ/Zl
£1/tl/80 +------+-----!-----+-----+---+-----+-----+---
0 V)
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Water Levels and Data over Time
White Mesa Mill-Well TW4-37
Total or
Measuring Measured
Water Point Depth to Total Depth
Elevation Land Surface Elevation Length Of Date Of Water to Water Total Depth
(WL) (LSD) (MP) Riser (L) Monitoring (blw.MP) (blw.LSD) Of Well
5,630.13 5,631.85 1.72 113.72
5,571.99 06/22/15 59.86 58.14
5,570.67 09/30/15 61.18 59.46
5,568.25 12/02/15 63.60 61.88
5,569.80 03/30/16 62.05 60.33
5,569.07 06/30/16 62.78 61.06
5,569.40 09/29/16 62.45 60.73
5,568.35 12/21/16 63.50 61.78
5,524.05 03/30/17 107.80 106.08
5,566.35 06/27/17 65.50 63.78
5,568.47 09/28/17 63.38 61.66
5,567.57 l 1/30/17 64.28 62.56
5,567.83 03/28/18 64.02 62.30
5,567.87 06/22/18 63.98 62.26
5,567.35 09/24/18 64.50 62.78
5,555.12 12/17/18 76.73 75.01
5,558.24 03/25/19 73.61 71.89
5,560.63 06/24/19 71.22 69.50
5,550.84 08/12/19 81.01 79.29
5,560.14 11/18/19 71.71 69.99
5,558.17 02/10/20 73.68 71.96
5,555.68 05/04/20 76.17 74.45
5,553.36 09/21/20 78.49 76.77
5,563.37 12/28/20 68.48 66.76
5,562.66 03/11/21 69.19 67.47
5,558.68 06/24/21 73.17 71.45
5,559.70 08/13/21 72.15 70.43
5,558.45 12/30/21 73.40 71.68
5,562.73 02/10/22 69.12 67.40
5,559.41 06/28/22 72.44 70.72
5,560.55 08/15/22 71.30 69.58
5,559.90 11/17/22 71.95 70.23
5,559.42 03/24/23 72.43 70.71
5,560.45 06/26/23 71.40 69.68
_.
N 0
0 0
_.
0 9
0 0
Depth Below Measuring Point (ft.)
00 0
0 0
0\ 0
0 0
.i:,.
0
0 0
N 0
0 0
0
0 0
I------+-----+-----+---------+------+ 12/27/14
05/10/16
09/22/17
02/04/19
06/18/20
10/31/21
03/15/23
~---~---~---~---~----~---~07/27/24
~ ~ ~ I (.H
-...l
~ ..... ~ ..,
~ ~ ~ ..... =-0 -< ~ ..,
~ -· e ~ -~
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Water Levels and Data over Time
White Mesa Mill -Well TW 4-38
Total or
Measuring Measured Total
Water Land Point Depth to Depth to Total
Elevation Surface Elevation Length Of Date Of Water Water Depth Of
(WL) (LSD) (MP) Riser (L) Monitoring (blw.MP) (blw.LSD) Well
5,628.82 5,629.99 1.17 113.92
5,576.59 12/21/16 53.40 52.23
5,576.62 03/30/17 53.37 52.20
5,576.07 06/27/17 53.92 52.75
5,577.49 09/28/17 52.50 51.33
5,575.68 11/30/17 54.31 53.14
5,574.69 03/28/18 55.30 54.13
5,574.25 06/22/18 55.74 54.57
5,573.63 09/25/18 56.36 55.19
5,572.31 12/17/18 57.68 56.51
5,572.51 03/25/19 57.48 56.31
5,572.53 06/24/19 57.46 56.29
5,572.31 08/12/19 57.68 56.51
5,571.90 11 /18/19 58.09 56.92
5,571.67 02/10/20 58.32 57.15
5,571.20 05/04/20 58.79 57.62
5,570.69 09/22/20 59.30 58.13
5,570.74 12/30/20 59.25 58.08
5,570.54 03/11/21 59.45 58.28
5,570.04 06/24/21 59.95 58.78
5,569.93 08/13/21 60.06 58.89
5,570.39 12/30/21 59.60 58.43
5,569.49 02/10/22 60.50 59.33
5,569.98 06/28/22 60.01 58.84
5,569.51 08/15/22 60.48 59.31
5,569.29 11/17/22 60.70 59.53
5,568.97 03/24/23 61.02 59.85
5,569.09 06/26/23 60.90 59.73
£Z/SI/£0 -
--Q,,.
8 I Z/1 £/0 I -.c
~ --~ 8 .... ~
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0 0Z/81/90
-= -Q,,.
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00 61/ton:o -~ I ~ ~ ~
LI/ZZ/60
91/01/S0
0 0 0 0 0 0 0 0 0 0 0 ~ ~ ~ ~ ~ 0 ~ ~ ~ ~ 0
N ("'") "SI" l/"l "° r-..: 00 Q\ 0 -N
l/"l l/"l l/"l l/"l l/"l l/"l l/"l l/"l "° "° "° ("y) iu!od ~upnst?;)W MOI;)H qid;)a
Water Levels and Data over Time
White Mesa Mill -Well TW 4-39
Total or
Measuring Measured
Water Land Point Depth to Total Depth Total
Elevation Surface Elevation Length Of Date Of Water to Water Depth Of
\ (WL) (LSD) (MP) Riser (L) Monitoring (blw.MP) (blw.LSD) Well
5,628.82 5,629.56 0.74 120.74
5,566.39 12/21/16 63.17 62.43
5,567.57 03/30/17 61.99 61.25
5,567.11 06/27/17 62.45 61.71
5,567.26 09/28/17 62.30 61.56
5,560.52 11/30/17 69.04 68.30
5,565.51 03/28/18 64.05 63.31
5,529.91 06/22/18 99.65 98.91
5,565.04 09/24/18 64.52 63.78
5,557.32 12/17/18 72.24 71.50
5,564.12 03/25/19 65.44 64.70
5,553.85 06/24/19 75.71 74.97
5,555.03 08/12/19 74.53 73.79
5,549.98 11/18/19 79.58 78.84
5,548.39 02/10/20 81.17 80.43
5,544.51 05/04/20 85.05 84.31
5,552.04 09/21/20 77.52 76.78
5,553.71 12/28/20 75.85 75.11
5,557.31 03/11/21 72.25 71.51
5,554.26 06/24/21 75.30 74.56
5,555.01 08/13/21 74.55 73.81
5,555.23 12/30/21 74.33 73.59
5,559.05 02/10/22 70.51 69.77
5,558.79 06/28/22 70.77 70.03
5,555.74 08/15/22 73.82 73 .08
5,558.96 11/17/22 70.60 69.86
5,554.96 03/24/23 74.60 73.86
5,556.05 06/26/23 73.51 72.77
-N 0 0 0
-0 0
0 0
Depth Below Measuring Point (ft.)
00 0 0 0
0\ 0
0 0
.j:,.
0
0 0
N 0
0 0
0
0 0
1------+------+------1-----+------+-----+-0S/l0/l6
09/22/17
-02/04/19
-06/18/20
I 0/31/21
03/15/23
'------'-----~---~---~--------~ 07/27/24
~ ~ ~ I '-H "° ~ ..... ~ .,
~ ~ "C ..... =-0 < ~ .,
~ ... a ~ -?
er -a "C -
Water Levels and Data over Time
White Mesa Mill-Well TW4-40
Total or
Measuring Measured Total
Water Land Point Depth to Depth to Total
Elevation Surface Elevation Length Of Date Of Water Water Depth Of
(WL) (LSD) , (MP) Riser (L) Monitoring (blw.MP) (blw.LSD) Well
5 595.66 5 597.58 1.92 86
5,531.12 03/28/18 66.46 64.54
5,530.83 06/22/18 66.75 64.83
5,530.34 09/25/18 67.24 65.32
5,530.06 12/17/18 67.52 65.60
5,529.52 03/25/19 68.06 66.14
5,527.69 06/24/19 69.89 67.97
5,526.98 08/12/19 70.60 68.68
5,526.43 11/18/19 71.15 69.23
5,525.57 02/10/20 72.01 70.09
5,525.81 05/04/20 71.77 69 .85
5,525.51 09/21/20 72.07 70 .15
5,523 .08 12/28/20 74.50 72.58
5,526.17 03/11/21 71.41 69.49
5,525.45 06/24/21 72.13 70.21
5,525.26 08/13/21 72.32 70.40
5,525.46 12/30/21 72.12 70.20
5,525.47 02/10/22 72.11 70.19
5,524.39 06/28/22 73.19 71.27
5,525.27 08/15/22 72.31 70.39
5,525.24 11/17/22 72.34 70.42
5,525.30 03/24/23 72.28 70.36
5,524.73 06/26/23 72.85 70.93
--..J V, --..J ~ --..J w
Depth Below Measuring Point (ft.)
--..J N --..J ---..J 0 °' \C) °' 00 0\ --..J °' °' 1-----+---+-----+---+-------i,----+---+-------+----+ 03/01/18
07/29/18
12/26/18
05/25/19
10/22/19
03/20/20
08/17/20
01/14/21
06/13/21
11/10/21
04/09/22
09/06/22
02/03/23
07/03/23
L-------'---...L------'---__.__-----''-----'---..__---J-__ __._11/30/23
~ ~ ,&;;,.. I ,&;;,.. = ~ ..... ~ .,
~ ~ "'C ..... =-0 < ~ .,
~ ... a
~ -~
C"' -a
"'C -
Water Levels and Data over Time
White Mesa Mill-Well TW4-41
Total or
Measuring Measured Total
Water Land Point Depth to Depth to Total
Elevation Surface Elevation Length Of Date Of Water Water Depth Of
(WL) (LSD) (MP) Riser (L) Monitoring (blw.MP) (blw.LSD) Well
5,613.31 5,614.96 1.65 97.8
5,539.24 03/28/18 75.72 74.07
5,526.18 06/22/18 88.78 87.13
5,513.86 09/24/18 101.10 99.45
5,536.53 12/17/18 78.43 76.78
5,521.88 03/25/19 93.08 91.43
5,527.89 06/24/19 87.07 85.42
5,530.75 08/12/19 84.21 82.56
5,536.69 11/18/19 78.27 76.62
5,538.67 02/10/20 76.29 74.64
5,526.94 05/04/20 88.02 86.37
5,529.30 09/21/20 85.66 84.01
5,528.43 12/28/20 86.53 84.88
5,525.74 03/11/21 89.22 87.57
5,525.25 06/24/21 89.71 88.06
5,526.09 08/13/21 88.87 87.22
5,524.68 12/30/21 90.28 88.63
5,524.95 02/10/22 90.01 88.36
5,524.97 06/28/22 89.99 88.34
5,525.83 08/15/22 89.13 87.48
5,525.79 11/17/22 89.17 87.52
5,524.86 03/24/23 90.10 88.45
5,525.74 06/26/23 89.22 87.57
--N 0 0 0
Depth Below Measuring Point (ft.)
00 0 °' 0
.j:::,.
0 N 0 0
1---------+----t-----+-----1---------;--------t-03/01/18
07/29/18
12/26/18
-05/25/19
-10/22/19
-03/20/20
-08/17/20
-01/14/21
06/13/21
11/10/21
04/09/22
-09/06/22
-02/03/23
07/03/23
'------'------'--------'----_._ ___ _.__ __ ____._ 11/30/23
~ ~ ,I:..
I
,I:..
i,..;.
~ ..... ~ .,
~ ~
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~ ...
9 ~ -~
O"' -9
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Water Levels and Data over Time
White Mesa Mill -Well TW 4-42
Total or
Measuring Measured Total
Water Land Point Depth to Depth to Total
Elevation Surface Elevation Length Of Date Of Water Water Depth Of
(WL) (LSD) (MP) Riser (L) Monitoring (blw.MP) (blw.LSD) Well
5,592.39 5,594.70 2.31 86.0
5,518.98 03/28/18 75.72 73.41
5,528.28 06/24/19 66.42 64.11
5,527.90 08/12/19 66.80 64.49
5,527.13 11/18/19 67.57 65.26
5,526.83 02/10/20 67.87 65.56
5,526.10 05/04/20 68.60 66.29
5,525.75 09/22/20 68.95 66.64
5,525.59 12/30/20 69.11 66.80
5,525.52 03/11/21 69.18 66.87
5,525.00 06/24/21 69.70 67.39
5,524.77 08/13/21 69.93 67.62
5,525.14 12/30/21 69.56 67.25
5,524.45 02/10/22 70.25 67.94
5,524.93 06/28/22 69.77 67.46
5,523.95 08/15/22 70.75 68.44
5,523.74 11/17/22 70.96 68.65
5,523.71 03/24/23 70.99 68.68
5,523.30 06/26/23 71.40 69.09
--.J 00 --.J O'I
Depth Below Measuring Point (ft.)
--.J .s,.. --.J N --.J 0 O'I 00 O'I O'I
O'I .s,..
1-------l-----+-------'f------+-----+----i----+ 03/01/18
07/29/18
12/26/18
05/25/19
10/22/19
03/20/20
08/17/20
01/14/21
06/13/21
11/10/21
04/09/22
09/06/22
02/03/23
07/03/23
L-----'-------'-------'..__ __ ....,__ __ _,_ __ ____. ___ ~ 11/30/23
~ ~ ~ I ~ N
~
"""" te
'"Ii
0 te
"C
"""" =-0 < te
'"Ii
~ .... 9 te -~
O"' -9
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Water Levels and Data over Time
White Mesa Mill -Well TW 4-43
Total or
Measurin g Measured
Water Land Point Date Of Depth to Total Depth Total
Elevation Surface Elevation Length Of Monitoring Water to Water Depth Of
(WL) (LSD) (MP) Riser (L) (blw.MP) (blw.LSD) Well
5,595.17 5,596.89 1.72 95.5
5,523.85 12/30/21 73.04 71.32
5,523.48 02/10/22 73.41 71.69
5,523.28 06/28/22 73.61 71.89
5,523.41 08/15/22 73.48 71.76
5,523.25 11/17/22 73.64 71.92
5,523.67 03/24/23 73.22 71.50
5,523.58 06/26/23 73.31 71.59
£Z/OZ/90
£Z/IZ/l0
-C.
= -.,Q
4::: ZZ/tZ/80 -~
= ....
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~ > 0 -= ZZ/LZ/£0 ...... C. ~ ~ s.. ~ ...... ~
f"')
"'1' I IZ/8Z/OI "'1' ~ ~
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M t--M t--
~
M t--
M
M t--
~
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'-11 M t--
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TabG
Chloroform Mass Removed and Volume Pumped in Chloroform Pumping Wells over Time
Table G-1
Quarterly Calculation of Chloroform Removed and Total Volume of Water Pumped
MW-4 MW-26 (formerly 1'\\-:4-1 S)
Total Total Pumped Total Total Total Total Pumped Total Total Quarter Pumped Cone Total (ug) Cone Total (ug)
(gal) (liters) (grams) (pounds) Pumped (gal) (liters) (grams) (pounds)
Ql 2007 1307110 3370 49474114 l.6673E+l0 16673 36,8 930510 1660 3521980.4 5846487381 5846 12.9
Q2 2007 81230 2000 307455,6 614911100 615 1.4 54400 300 205904.0 61771200 62 0.1
Q3 2007 100700 2600 381149.5 990988700 991 22 72080 1400 272822 8 381951920 382 08
Q42007 90830 2300 343791.6 790720565 791 1.7 61750 2000 233723.8 467447500 467 LO
QI 2008 83950 2400 317750.8 762601800 763 1.7 47780 930 180847 3 168187989 168 0.4
02 2008 62780 2500 237622.3 594055750 594 1.3 44840 1300 169719.4 220635220 221 0.5
Q3 2008 81400 1800 308099.0 554578200 555 1.2 61280 630 231944.8 146125224 146 0.3
Q4 2008 91320 1700 345646,2 587598540 588 1.3 55700 630 210824.5 132819435 133 03
Ql 2009 90710 2200 343337.4 755342170 755 1.7 52970 950 200491.5 190466878 190 0.4
Q2 2009 450040 1800 1703401.4 3066122520 3066 6,8 58050 410 219719,3 90084892.5 90 0.2
Q3 2009 90420 2000 342239.7 684479400 684 L5 57610 850 218053.9 185345773 185 0.4
Q4 2009 322380 1800 1220208.3 2196374940 2196 4.8 61960 1100 234518.6 257970460 258 0.6
QI 2010 68125 1600 257853.1 412565000 413 0.9 61320 780 232096.2 181035036 181 0.4
Q2 2010 84005.33 2100 317960,2 667716366 668 I 5 60500 1900 228992.5 435085750 435 1.0
Q3 2010 79859 I 1900 302266,7 574306718 574 1.3 63850 2200 241672.3 531678950 532 1.2
Q4 2010 90042 2 1500 340809.7 511214591 511 11 60180 970 227781 3 220947861 221 05
QI 2011 76247.6 1700 288597,2 490615182 491 1.1 55130 450 208667.1 93900172 5 94 0_2
Q2 2011 85849.3 1700 324939.6 552397321 552 1.2 55800 6 1800 211205 3 380169488 380 0.8
Q3 2011 85327 7 1700 322965.3 549041086 549 1.2 65618 720 248364.1 178822174 179 04
Q4201] 89735.0 1600 339647.0 543435160 543 1.2 50191.3 1800 I 89974.1 341953327 342 0,8
QI 2012 90376.4 1500 342074.7 513112011 513 11 31440.1 2400 119000,8 285601868 286 0.6
Q2 2012 90916.5 1400 344118.8 481766269 482 11 2670L2 3000 101064.1 303192353 303 0.7
Q3 2012 91607.0 1500 346732.5 520098743 520 11 25246 3100 95556.1 296223941 296 0.7
Q4 2012 78840.0 1300 298409.4 387932220 388 0.9 30797 1200 I 16566 6 139879974 140 0.3
QI 2013 62943 7 1670 238241.9 397863981 398 09 22650 7 2120 85732.9 181753747 182 0.4
Q2 2013 71187.3 1490 269443.9 401471456 401 0.9 25343.4 4030 95924.8 386576819 387 0.9
Q3 2013 72898 8 1520 275922,0 419401376 419 09 25763 2940 97513,0 286688088 287 06
Q4 2013 70340.4 1410 266238.4 375396164 375 0.8 24207.6 1410 91625.8 129192330 129 0,3
QI 2014 69833 8 1390 264320,9 367406097 367 08 23263 I 1400 88050 8 123271167 123 03
Q2 2014 71934,9 1390 272273,6 378460299 378 0.8 23757.5 1960 89922.1 176247390 176 0.4
Q3 2014 74788.2 1490 283073,3 421779272 422 0,9 24062 4 2120 91076 2 193081510 193 04
Q42014 63093.0 1440 238807.0 343882087 344 0,8 21875,8 2090 82799.9 173051797 173 0.4
QI 2015 76454.3 1400 289379.5 405131336 405 0.9 24004.9 1980 90858,5 179899922 180 04
Q2 2015 60714,7 1300 229805 1 298746681 299 0.7 27804.6 1980 105240 4 208376014 208 0,5
Q3 2015 89520.8 1290 338836 2 437098734 437 1.0 21042.0 2350 79644.0 187163330 187 0.4
Q4 2015 99633.4 1200 3771124 452534903 453 1.0 19355 6 2680 73260.9 196339335 196 04
QI 2016 90882.1 1240 343988,7 426546048 427 0.9 19150.8 2650 72485 8 192087312 192 0.4
Q2 2016 96540.5 1580 365405 8 577341152 577 1.3 22105 7 2220 83670. I 185747565 186 0.4
Q3 2016 79786.4 1430 301991.5 431847879 432 1.0 17149.5 3190 64910.9 207065635 207 0.5
Q4 2016 85414 0 1470 323292.0 475239225 475 1.0 18541 6 2510 70180 0 176151690 176 0.4
QI 2017 76642.3 1450 290091.1 420632103 421 0.9 26107.0 1290 98815.0 127471344 127 03
02 2017 72299 8 1430 273654 7 391326282 391 0.9 25921 8 2450 98114 0 240379332 240 0.5
Q3 2017 95349 3 1400 360897 I 505255941 505 1.1 27489.9 1230 104049.3 127980604 128 0.3
Q4 2017 106679,8 1320 403783 0 532993617 533 I 2 26445 8 2570 100097.4 257250197 257 06
Table G-1
Quarterly Calculation of Chlorofonn Removed and Total Volume of Water Pumped
MW-4 MW-26 (ro_rm_crly nv4-JS)
Total Total Pumped Total Total Total Total Pumped Total Total Quarter Pumped Cone Total (ug) Cone Total (ug)
(gal) (liters) (grams) (pounds) Pumped (gal) (liters) (grams) (pounds)
QI 2018 I 05060.4 1320 397653,6 524902770 525 1.2 27004.7 1210 102212,8 123677475 124 03
Q2 2018 l 01786.2 1240 385260,8 477723351 478 1.1 26654.7 1870 100888,0 188660634 189 0.4
Q3 2018 95480.5 1300 361393,7 469811800 470 l 0 25536 l 1680 96654,1 162378953 162 0.4
Q4 2018 l 02884.8 1330 389418.9 517927177 518 1.1 23791-3 1480 90050.l 133274104 133 0.3
QI 2019 111746 9 1190 422962,0 503324800 503 11 26798 5 1110 l 01432.3 112589878 113 02
Q2 2019 94540.7 1300 357836.5 465187514 465 1.0 24050.2 1280 91030.0 116518409 117 0.3
Q3 2019 95517 7 1180 361534,5 426610704 427 0.9 24181.l 1360 91525.5 124474630 124 03
Q4 2019 99220.8 1370 375550,9 514504705 515 I.I 22384.8 1390 84726.5 117769791 118 0.3
Ql 2020 102597.0 1230 388329,6 477645370 478 1.1 24107,0 1100 91245 0 100369495 100 02
Q2 2020 101850,7 1250 385504.9 481881077 482 1.1 25418.4 1610 96208,6 154895917 155 0_3
Q3 2020 84607.8 1240 320240.6 397098342 397 0.9 23663.7 l 130 89567. l 101210828 101 02
04 2020 91258.6 1050 345413,8 362684491 363 0.8 28934.5 866 109517.l 94841793.4 95 02
Ql 2021 93486.7 l 150 353847.3 406924364 407 0.9 27898.0 3060 l 05593.9 323117426 323 0.7
Q2 2021 93252.4 1320 352960,3 465907641 466 l 0 29124.1 998 l 10234 7 l 10014249 l 10 0.2
Q3 2021 89693 5 1140 339489 9 387018483 387 0.9 27945.6 1580 105774.l 167123072 167 0.4
Q4 2021 95091.4 1100 359920 9 395913044 396 0.9 30045 3 826 l 13721.5 93933926.4 94 0.2
Ql 2022 96291.3 1040 364462.6 379041073 379 0.8 29113-3 1030 ll019U 113499656 113 0.3
Q2 2022 93554 5 1010 354103 8 357644820 358 0.8 29385 9 61 I 111225.6 67958860 8 68 0.1
03 2022 82718,6 1200 313089.9 375707881 376 0,8 28531 .3 612 I 07991.0 66090473.9 66 0.1
Q4 2022 91487 4 1170 346279 8 405147421 405 09 29411.4 1040 111322.l 115775035 l 16 03
Ql 2023 90044.0 1010 340816.6 344224782 344 0.8 27474 7 571 103991 7 59379283.3 59 0.1
02 2023 91310 8 1050 345611 5 362892026 363 08 25207 6 2230 95410 8 212766008 213 05
Totals 7554221.38 115 6 3198409 l 40.4
Table G-1
Quarterly Calculation of Chloroform Removed and Total Volume of Water Pumped
TW4-19 TW4-20
Total Total Pumped Total Total Total Total Pumped Total Total Quarter Pumped Cone Total (ug) Cone Total (ug)
(gal) (liters) (grams) (pounds) Pumped (gal) (liters) (grams) (pounds)
QI 2007 6768986 2660 25620612.0 68150827947 68151 150.2 642290 16240 2431067,7 3.9481E+IO 39481 87.0
Q2 2007 605400 8 2291439.0 18331512 18 0.0 163520 1800 618923 2 1114061760 1114 2.5
Q3 2007 316080 1100 1196362.8 1315999080 1316 29 70360 5200 266312.6 1384825520 1385 3 1
Q4 2007 334350 1 JOO 1265514.8 1392066225 1392 3 1 63630 9000 240839.6 2167555950 2168 4.8
QI 2008 304784 1800 1153607.4 2076493392 2076 46 66520 13000 251778 2 3273116600 3273 7.2
Q2 2008 380310 1000 1439473.4 1439473350 1439 32 39360 30000 148977.6 4469328000 4469 9,9
Q3 2008 529020 3600 2002340.7 7208426520 7208 15.9 53260 21000 201589.l 4233371100 4233 9.3
042008 589620 4200 22317117 9373189140 9373 20.7 50230 1000 190120.6 190120550 190 0.4
QI 2009 469100 1100 1775543.5 1953097850 1953 4.3 52050 8200 197009.3 1615475850 1615 3.6
02 2009 450040 990 1703401 4 1686367386 1686 3.7 49270 6800 186487.0 1268111260 1268 2.8
Q3 2009 200650 6600 759460.3 5012437650 5012 11.1 51030 13000 193148.6 2510931150 2511 5,5
Q4 2009 454205 4700 1719165 9 8080079848 8080 17.8 208790 15000 790270,2 1.1854E+IO 11854 26.1
Ql 2010 348550 940 1319261.8 1240106045 1240 2 7 14490 3500 54844.7 191956275 192 0.4
Q2 2010 453340 1800 1715891 9 3088605420 3089 68 39014 86 18000 147671.2 2658082412 2658 5.9
Q3 2010 1I68992 2000 442463.5 884926944 885 2.0 39098.3 15000 147987.1 2219805983 2220 4.9
Q4 2010 767970 5 1200 2906768 3 3488122011 3488 77 36752.5 24000 139108.2 3338597100 3339 7.4
QI 2011 454607.9 3400 1720690.9 5850349065 5850 12.9 37187.5 31000 140754.7 4363395313 4363 9.6
Q2 2011 159238.9 4000 602719.2 2410876946 2411 53 67907.7 8100 257030.6 2081948220 2082 4.6
Q3 2011 141542.6 970 535738.7 519666578,8 520 I I 72311 2 6800 273697.9 1861145666 1861 4.1
Q42011 147647 2 2200 558844.7 1229458234 1229 2.7 72089.3 7900 272858.0 2155578204 2156 4.8
Ql 2012 148747 650 563007.4 365954806.8 366 08 76306 I 1000 288818 2 3177000310 3177 7.0
Q2 2012 172082.03 460 651330.5 299612022.4 300 07 22956.43 36000 86890.1 3128043152 3128 6,9
Q3 2012 171345 950 648540,8 616113783.8 616 1.4 22025 13000 83364.6 1083740125 1084 2.4
Q4 2012 156653 1500 592931.6 889397407.5 889 2.0 20114 19000 76131.5 1446498310 1446 3,2
QI 2013 210908 4210 798286,8 3360787344 3361 7.4 18177 ,, 18500 68799.9 1272798983 1273 2.8
Q2 2013 226224 2070 856257,8 1772453729 1772 3.9 20252.4 26300 76655.3 2016035284 2016 4.4
Q3 2013 329460.1 8100 1247006 5 10100752476 10101 22 3 19731 26800 74681.8 2001473178 2001 4.4
Q4 2013 403974 942 1529041 6 1440357178 1440 3.2 19280.2 15700 72975.6 1145716245 1146 25
QI 2014 304851 586 1153861.0 676162566 5 676 1 5 18781 6 17800 71088.4 1265372737 1265 2 8
Q2 2014 297660.0 810 1126643.1 912580911 913 2.0 18462.4 22100 69880.2 1544352066 1544 3_4
Q3 2014 309742.0 1410 1172373.5 1653046593 1653 3.6 17237 9 12400 65245.5 809043599 809 1 8
Q4 2014 198331.0 4310 750682.8 3235443019 3235 7.1 16341 8 23300 61853.7 1441191513 1441 3.2
QI 2015 60553.0 4660 229193.1 1068039869 1068 2.4 15744 7 19900 59593.7 l l 85914421 1186 26
Q2 2015 75102.8 1570 284264 1 446294633.9 446 1.0 18754.l 17600 70984.3 1249323126 1249 28 . Q3 2015 116503.9 7860 440967 3 3466002675 3466 7.6 17657.3 17000 66832.9 l 136158969 1136 25
Q4 2015 112762 7 7840 426806 8 3346165465 3346 7.4 15547 4 17000 58846.9 1000397453 1000 2.2
Ql 2016 116597.0 7780 441319.6 3433466838 3433 7.6 14353 5 21600 54328.0 1173484746 1173 2.6
Q2 2016 123768.0 12600 468461.9 5902619688 5903 13,0 15818 3 33700 59872.3 2017695347 2018 4.4
Q3 2016 103609.0 6040 392160,1 2368646793 2369 5.2 12186.6 23600 46126.3 1088580232 1089 2.4
Q4 2016 104919.4 6640 397119,9 2636876329 2637 5 8 12879.6 21300 48749.3 1038359792 1038 2.3
QI 2017 110416.7 1240 417927.2 518229739.8 518 1.1 13552.8 23400 51297.3 1200357943 1200 2.6
Q2 2017 I 09943 0 510 416134.3 212228470 l 212 05 12475.3 18100 47219.0 854664090 855 1.9
Q3 2017 112626.4 8840 426290,9 3768411768 3768 8.3 14556.8 27600 55097 5 1520690669 1521 3.4
Q4 2017 l 08891 .2 129 412153,2 53167761 77 53 0 1 14271.0 11600 54015.7 626582526 627 1.4
Table G-1
Quarterly Calculation of Chloroform Removed and Total Volume of Water Pumped
TW4-19 TW4-20
Total Total Pumped Total Total Total Total Pumped Total Total Quarter Pumped Cone Total (ug) Cone Total (ug)
(gal) (liters) (grams) (pounds) Pumped (gal) (liters) (grams) (pounds)
01 2018 109856 3 2640 415806.1 1097728092 1098 2.4 14258.4 15400 53968.0 831107878 831 1.8
Q2 2018 111271.4 2980 421162.2 1255063502 1255 2 8 13367.6 12000 50596.4 607156392 607 1.3
03 2018 105821 8 1910 400535,5 765022829,8 765 1.7 12443 6 10500 47099,0 494539773 495 I.I
Q4 2018 107197 4 5270 405742.2 2138261178 2138 4.7 12841.1 9500 48603,5 461733494 462 1.0
QI 2019 116132 8 2050 439562.6 901103428.4 901 2.0 14623.9 15600 55351.5 863482799 863 1.9
Q2 2019 100704.0 11500 381164,6 4383393360 4383 9.7 13439.1 13700 50867.0 69687781 I 697 1.5
03 2019 101026 8 6670 382386.4 2550517541 2551 56 I 3787 0 10500 52183.8 547929848 548 1.2
04 2019 98806.8 551 373983.7 206065039.6 206 0.5 8317.69 8790 31482.5 276730794 277 0.6
QI 2020 96857 9 8720 366607.2 3196814361 3197 70 9505 05 14300 35976,6 514465584 514 1.1
Q2 2020 136619.7 7600 517105,6 3930002290 3930 8.7 100713.8 5800 381201.6 2210969393 2211 4.9
03 2020 154514.4 1350 584837,0 789529955.4 790 1.7 12476 2 Well collaosed and not samoled
Q4 2020 144512.0 660 546977.9 36 I 005427.2 361 0.8 Well plugged and abandoned
QI 2021 133462.3 6660 505154,8 3364331005 3364 7.4 Well plugged and abandoned
02 2021 151242.8 775 572454.0 443651848 5 444 1,0 Well plugged and abandoned
Q3 2021 157632.4 4450 596638.6 2655041921 2655 5.9 Well plugged and abandoned
Q4 2021 124359.9 6950 470702.2 3271380439 3271 7,2 Well olugged and abandoned
QI 2022 112209.2 654 424711.8 277761531.6 278 0.6 Well olugged and abandoned
Q2 2022 123246 5 2540 466488,0 1184879526 1185 2.6 Well plugged and abandoned
03 2022 137486,6 4750 520386. 7 2471836850 2472 5.4 Well plugged and abandoned
Q4 2022 137474 5 7380 520341 0 3840116451 3840 8.5 Well plugged and abandoned
QI 2023 13229L8 230 500724.3 115166591.7 115 0.3 Well plugged and abandoned
Q2 2023 117218 0 4850 443670 3 2151800865 2152 4 7 Well plugged and abandoned
Totals 20887956.81 485.7 2582397,89 296 2
Table G-1
Quarterly Calculation of Chloroform Removed and Total Volume of Water Pumped
TW4-4 TW4-22
Total Total Total Total Total Total Total Total Quarter Pumped Cone Pumped Total (ug) (grams) (pounds) Pumped Cone Pumped Total (ug) (grams) (pounds) (gal) (liters) (gal) (liters)
QI 2007 NA NA NA NA NA NA NA NA NA NA NA NA
Q2 2007 NA NA NA NA NA NA NA NA NA NA NA NA
Q3 2007 NA NA NA NA NA NA NA NA NA NA NA NA
Q4 2007 NA NA NA NA NA NA NA NA NA NA NA NA
QI 2008 NA NA NA NA NA NA NA NA NA NA NA NA
Q2 2008 NA NA NA NA NA NA NA NA NA NA NA NA
Q3 2008 NA NA NA NA NA NA NA NA NA NA NA NA
Q4 2008 NA NA NA NA NA NA NA NA NA NA NA NA
QI 2009 NA NA NA NA NA NA NA NA NA NA NA NA
Q2 2009 NA NA NA NA NA NA NA NA NA NA NA NA
Q3 2009 NA NA NA NA NA NA NA NA NA NA NA NA
Q4 2009 NA NA NA NA NA NA NA NA NA NA NA NA
QI 2010 NA NA NA NA NA NA NA NA NA NA NA NA
Q2 2010 84513.9 2000 319885,1 639770223 640 1.4 NA NA NA NA NA NA
Q3 2010 76916,8 2100 291130.1 611373184.8 611 1.3 NA NA NA NA NA NA
Q4 2010 86872 1 1700 328810,9 558978527 5 559 1.2 NA NA NA NA NA NA
QI 2011 73360 0 1800 277667.6 499801680 500 1. 1 NA NA NA NA NA NA
022011 80334.6 1700 304066,5 516912983.7 517 1.1 NA NA NA NA NA NA
Q3 2011 97535.0 1500 369170.0 553754962.5 554 1.2 NA NA NA NA NA NA
Q4201 I I 09043 5 1500 412729.6 619094471_3 619 1.4 NA NA NA NA NA NA
QI 2012 101616.8 1200 384619.6 461543505.6 462 1.0 NA NA NA NA NA NA
Q2 2012 87759, I 1500 332168.2 498252290.3 498 I.I NA NA NA NA NA NA
Q3 2012 80006,0 1600 302822.7 484516336 485 I.I NA NA NA NA NA NA
Q4 2012 71596 1400 270990.9 379387204 379 0,8 NA NA NA NA NA NA
QI 2013 58716.8 1460 222243.1 324474908 5 324 0.7 16677.4 10600 63124 0 669113965.4 669.1 I 5
Q2 2013 65603.4 1330 248308.9 330250795.8 330 0.7 25523.2 12500 96605.3 1207566400,0 1207 6 2.7
Q3 2013 63515.4 1380 240405.8 331759988 8 332 0,7 25592.9 9640 96869.1 933818379.5 933.8 2.1
Q42013 60233.6 1360 227984 2 310058479.4 310 0.7 24952.2 13300 94444.1 1256 I 06224.1 1256.1 2.8
QI 2014 58992.9 1260 223288.1 281343039 4 281 0,6 24532,0 12100 92853.6 1123528802.0 1123 5 2.5
Q2 2014 60235.3 1220 227990.6 278148544.8 278 0.6 24193,9 12400 91573.9 1135516502.6 1135 5 2.5
Q3 2014 69229.4 1320 262033 3 345883928 3 346 08 24610.9 12400 93152.3 1155087980 6 1155 I 25
Q4 2014 64422,6 1130 243839 5 275538681.3 276 0.6 23956 9 12400 90676,9 1124393144.6 1124.4 2.5
QI 2015 36941.3 1350 139822.8 I 88760807. 7 189 0.4 22046.9 12700 83447.5 1059783459.6 1059 8 23
Q2 2015 68162.8 1280 257996.2 330235133.4 330 0,7 23191.6 8050 87780.2 706630658.3 706.6 1.6
Q3 2015 64333.0 1220 243500 4 297070494.1 297 0.7 24619.9 7810 93186,3 727785170 9 727.8 1.6
Q4 2015 59235.1 1190 224204.9 266803775.7 267 0.6 23657 6 7530 89544.0 674266440 5 674.3 1.5
Qt 2016 57274.0 1190 216782.1 257970687 .1 258 0,6 24517 8 6070 92799.9 563295229.1 563.3 I 2
Q2 2016 61378.0 1780 232315.7 413521999.4 414 0.9 26506 3 8570 100326.3 859796 780. 9 859,8 1.9
Q3 2016 50104.2 1380 189644.4 261709267.9 262 0,6 22144.1 5840 83815.4 489482044.0 489.5 11
Q4 2016 31656.0 1430 119818.0 171339682.8 171 0.4 23646 8 3370 89503.1 301625575, I 301 6 0,7
Ql 2017 23526.8 1290 89048 9 114873130 115 0.3 24066.2 5320 91090.6 484601816.4 484.6 11
Q2 2017 23244 9 1290 87981 9 113496711 113 0.3 23685 0 3670 89647,7 329007150.8 329.0 0.7
Q3 2017 23937.3 1290 90602 7 116877457.8 117 0.3 24583.2 5150 93047 4 479194171.8 479.2 I. I
Q4 2017 22900 6 1120 86678 8 97080223 52 97 0,2 23779 6 4770 90005.8 429327599.2 429.3 0.9
Table G-1
Quarterly Calculation of Chloroform Removed and Total Volume of Water Pumped
TW4-4 TW4-22
Total Total Total Total Total Total
Quarter Pumped Cone Pumped Total (ug) Pumped Cone Pumped Total (ug) Total Total
(gal) (liters) (grams) (pounds) (gal) (liters) (grams) (pounds)
012018 23103.4 1160 87446,4 101437788 101 0.2 23982.8 4530 90774 9 411210287.9 411.2 0.9
Q2 2018 18137.0 1050 68648.5 72080972.25 72 0.2 23256.6 3010 88026.2 264958955.3 265 0 0.6
03 2018 15366,0 1030 58160.3 59905119 3 60 0.1 21248,7 3600 80426.3 289534786,2 289.5 0.6
Q4 2018 15420.2 1140 58365.5 66536620. 98 67 0.1 24171.0 2680 91487.2 245185789.8 245.2 0.5
QI 2019 16655.0 1050 63039,2 66191133,75 66 0.1 26149,9 4310 98977.4 4265924 71.2 426.6 0.9
Q2 2019 14311,9 1070 54170.5 57962479.41 58 0.1 23073.1 4690 87331.7 409585595.6 409.6 0.9
Q3 2019 14520.0 989 54958.2 54353659.8 54 0.1 2471 1.7 3460 93533 8 323626894.4 323.6 0,7
Q4 2019 14399.8 1140 54503 2 62133697.02 62 0.1 24052.5 3820 91038.7 34 7767881.8 347.8 0.8
QI 2020 14439.2 1100 54652.4 60117609.2 60 0.1 24746, 1 3910 93664 0 366226195.0 366 2 0.8
02 2020 15347.0 1140 58088 4 66220770.3 66 0.1 25295.3 2530 95742.7 242229057.6 242.2 0.5
Q3 2020 14389.9 1110 54465 8 60457006 37 60 0.1 23050.6 3760 87246.5 3280469 I 9.0 328 0 0.7
Q4 2020 15061 5 979 57007 8 55810614.17 56 0.1 22866.1 3640 86548.2 315035406.1 315.0 0.7
QI 2021 13740.8 1130 52008 9 58770088 64 59 0.1 22605.6 5100 85562.2 436367 I 99.6 436 4 I 0
Q2 2021 13425.7 1240 50816 3 63012180.38 63 0.1 22893.3 4520 86651.1 39 I 663155.1 391 7 09
Q3 2021 12021.0 1100 45499.5 50049433.5 50 0.1 22272_5 3510 84301.4 295897957.9 295.9 0.7
Q4 2021 11401. I 950 43153 2 40995505.33 41 0.1 22667.3 3330 85795,7 285699782.6 285.7 0.6
QI 2022 10434.1 1010 39493.1 39887999.19 40 0, I 22083,6 3320 83586.4 277506934.3 277.5 0.6
Q2 2022 11463,2 1110 43388 2 48160915 32 48 0. I 22489.0 2600 85120.9 221314249 0 221.3 05
03 2022 7928.5 1040 30009.4 31209747.4 31 0.1 21940.2 3190 83043.7 264909265.8 264.9 06
Q4 2022 8777.0 1030 33220.9 34217573 35 34 0.1 22398 4 2350 84777 9 199228168 4 199.2 04
Ql 2023 8236.0 945 31173.3 29458730.7 29 0.1 21783 0 1900 82448.7 156652444.5 156.7 0.3
Q2 2023 7407.0 1980 28035 5 55510280.1 56 0 1 22375 4 3330 84690 9 282020660 4 282 0 06
Totals 2269182.5 26 8 986597.1 49.6
Table G-1
Quarterly Calculation of Chloroform Removed and Total Volume of Water Pumped
TW4-24 TW4-25
Total Total Total Total Total Total Total Total Quarter Pumped Cone Pumped Total (ug) (grams) (pounds) Pumped Cone Pumped Total (ug) (grams) (pounds) (gal) (liters) (gal) (liters)
QI 2007 NA NA NA NA NA NA NA NA NA NA NA NA
Q2 2007 NA NA NA NA NA NA NA NA NA NA NA NA
Q3 2007 NA NA NA NA NA NA NA NA NA NA NA NA
Q4 2007 NA NA NA NA NA NA NA NA NA NA NA NA
QI 2008 NA NA NA NA NA NA NA NA NA NA NA NA
Q2 2008 NA NA NA NA NA NA NA NA NA NA NA NA
Q3 2008 NA NA NA NA NA NA NA NA NA NA NA NA
Q42008 NA NA NA NA NA NA NA NA NA NA NA NA
QI 2009 NA NA NA NA NA NA NA NA NA NA NA NA
Q2 2009 NA NA NA NA NA NA NA NA NA NA NA NA
Q3 2009 NA NA NA NA NA NA NA NA NA NA NA NA
Q4 2009 NA NA NA NA NA NA NA NA NA NA NA NA
QI 2010 NA NA NA NA NA NA NA NA NA NA NA NA
Q2 2010 NA NA NA NA NA NA NA NA NA NA NA NA
Q3 2010 NA NA NA NA NA NA NA NA NA NA NA NA
Q4 2010 NA NA NA NA NA NA NA NA NA NA NA NA
QI 2011 NA NA NA NA NA NA NA NA NA NA NA NA
Q2 2011 NA NA NA NA NA NA NA NA NA NA NA NA
Q3 2011 NA NA NA NA NA NA NA NA NA NA NA NA
Q4201 I NA NA NA NA NA NA NA NA NA NA NA NA
QT 2012 NA NA NA NA NA NA NA NA NA NA NA NA
Q2 2012 NA NA NA NA NA NA NA NA NA NA NA NA
Q3 2012 NA NA NA NA NA NA NA NA NA NA NA NA
Q4 2012 NA NA NA NA NA NA NA NA NA NA NA NA
QI 2013 144842.6 57 548229.2 3124906 7 3.1 0,0 99369 9 0,0 376115.1 0.0 0.0 0.0
Q2 2013 187509.3 17.4 709722 7 12349175,0 12.3 0.0 147310.4 0.0 557569.9 0.0 0,0 0.0
Q3 2013 267703.5 21.8 1013257.7 22089018.9 22 I 0 I 145840 9 0.0 552007,8 0.0 0.0 0.0
Q4 2013 260555.3 32.5 986201 8 32051558.8 32.1 0 I 126576,5 0.0 479092.1 0.0 0.0 0.0
QT 2014 229063 9 78.5 867006 9 68060038.6 68 I 0.2 129979 2 0,0 491971.3 00 00 0.0
Q2 2014 216984.1 62.7 821284.8 51494558, 1 51.5 0.1 124829,8 0.0 472480.8 0.0 0.0 0.0
03 2014 213652.5 76.3 808674.7 61701880.6 61.7 0.1 119663,9 0,0 452927.9 00 00 0.0
04 2014 178468 7 25,8 675504,0 17428004.0 17.4 0.04 107416.1 0.0 406569,9 00 00 0.0
QI 2015 92449.3 49.2 349920.6 17216093.5 17.2 0.04 71452.4 0.0 270447.3 0.0 0,0 0,0
Q2 2015 62664.2 4.28 237184.0 1015147.5 1,0 0.002 91985.3 0,0 348164.4 0,0 0.0 0.0
Q3 2015 66313.2 46.9 250995.5 11771687.2 11.8 0 026 124137 I 0.0 469858.9 0.0 0.0 0.0
Q4 2015 107799 I 25,3 408019,6 10322895 7 10.3 0.023 116420 1 0.0 440650.1 0.0 00 0.0
QI 2016 100063.2 22,8 378739.2 8635254.0 8.6 0.019 115483.2 0.0 437103,9 00 0.0 0.0
Q2 2016 65233.6 69,6 246909 2 17184878.6 17 2 0 038 125606 0 0.0 475418.7 0,0 00 0.0
Q3 2016 51765.8 17,8 195933.6 3487617,2 3.5 0.008 104983.6 0.0 397362.9 0.0 0.0 0.0
Q4 2016 99522.5 20,8 376692,7 7835207 4 7,8 0 017 98681.2 0.0 373508,3 0,0 00 0.0
QI 2017 99117.4 18.3 3751594 6865416.3 69 0 015 161.2 1.15 610.1 701.7 0.0 0.0
Q2 2017 52808 7 17.2 199880.9 3437952.0 3.4 0 008 101617 2 0.0 384621 , I 0,0 00 0.0
Q3 2017 55574.6 17,8 210349.9 3744227.5 3 7 0.008 124138.4 00 469863,8 0,0 0.0 0.0
04 2017 106021.4 16,0 401291 0 6420656.0 64 0.014 116731 9 0.0 441830,2 00 00 0,0
Table G-1
Quarterly Calculation of Chloroform Removed and Total Volume of Water Pumped
TW4-24 TW4-25
Total Total Total Total Total Total Total Total Quarter Pumped Cone Pumped Total (ug) Pumped Cone Pumped Total (ug)
(gal) (liters) (grams) (pounds) (gal) (liters) (grams) (pounds)
OJ 2018 96900.2 24.9 366767.3 9132504.7 9.1 0.020 116991.7 0.0 442813,6 0.0 0.0 0.0
02 2018 53117.9 49.2 201051 3 9891721.6 99 0.022 117758 3 0.0 445715.2 0.0 00 0,0
Q3 2018 53142.5 35.0 201144.4 7040052 7 7.0 0.016 111657,5 0.0 422623.6 0.0 00 0.0
04 2018 101606.4 21.0 384580.3 8076 I 85 .5 8.1 0.018 114458.2 0.0 433224.3 00 00 0.0
Ql 2019 97701.0 28.1 369798.3 10391331.8 10.4 0.023 90789.5 0,0 343638.3 00 0.0 0.0
Q22019 53197.3 28.8 201351-8 5798931.3 5 8 0 013 88302.0 0.0 334223.1 0.0 0.0 0.0
Q3 2019 54445.7 31.1 206077 0 6408993,9 6.4 0,014 87609 5 0,0 331602.0 0.0 0.0 0.0
04 2019 102211.02 43.3 386868.7 16751415,2 16.8 0,037 85928.53 0,0 325239.5 0.0 0.0 0.0
01 2020 86344 38 61.7 326813 5 20164391.6 20.2 0 044 85049 47 0,0 321912.2 0,0 00 0.0
Q2 2020 57634.7 49.4 218147 3 10776478.6 10 8 0.024 90767.9 0.0 343556.6 0,0 0.0 0.0
Q3 2020 53316.1 63.8 201801.4 12874931.8 12 9 0,028 83956.3 0.0 317774.6 00 00 0.0
Q4 2020 103987.2 72.6 393591,6 28574746.7 28.6 0.063 86254.4 0.0 326472.7 00 0.0 0.0
QI 2021 8 I 891.2 96.2 309958.3 29817985.4 29,8 0 066 80272.2 0.0 303830.4 00 00 0.0
02 2021 54377.9 412 205820.4 8479798.5 8.5 0.019 82692.8 0.0 312992.2 0.0 0.0 0.0
Q3 2021 53333 1 103.0 201865.8 20792175.7 20.8 0.046 82802.3 0.0 313406.7 00 o.o 0,0
Q4 2021 96534.8 112.0 365384,2 40923032.4 40.9 0.090 89361.5 0.0 338233.3 0.0 00 0,0
Ql 2022 73545 0 114.0 278367.8 31733932.1 31.7 0.070 92972.1 0.0 351899.4 00 00 0.0
Q2 2022 50341.7 124.0 190543.3 23627373.5 23 6 0 052 101724 9 00 385028.7 0.0 0.0 0.0
Q3 2022 58456.4 88,9 221257.7 19669806.3 19.7 0.043 98357.6 0.0 372283.7 0.0 0.0 0.0
Q4 2022 100289,8 79 5 379596 9 30177956,0 30 2 0 067 95056,0 0.0 359787 1 0.0 0,0 00
QI 2023 75424.5 95,5 285481.6 27263491.0 27.3 0.060 87269.8 0.0 330316 2 0.0 0.0 0.0
Q2 2023 52081.4 58 5 197128 0 11531987 1 11 5 0 025 94118 3 00 356237 8 00 00 00
Totals 4267993,1 1 7 4256535.2 0.0
Table G-1
Quarterly Calculation of Chloroform Removed and Total Volume of Water Pumped
TW4-0l TW4-02
Total Total Total Total Total Total Total Total Quarter Pumped Cone Pumped Total (ug) (grams) (pounds) Pumped Cone Pumped Total (ug) (grams) (pounds) (gal) (liters) (gal) (liters)
Ql 2007 NA NA NA NA NA NA NA NA NA NA NA NA
Q2 2007 NA NA NA NA NA NA NA NA NA NA NA NA
Q3 2007 NA NA NA NA NA NA NA NA NA NA NA NA
Q4 2007 NA NA NA NA NA NA NA NA NA NA NA NA
Ql 2008 NA NA NA NA NA NA NA NA NA NA NA NA
Q2 2008 NA NA NA NA NA NA NA NA NA NA NA NA
Q3 2008 NA NA NA NA NA NA NA NA NA NA NA NA
Q4 2008 NA NA NA NA NA NA NA NA NA NA NA NA
01 2009 NA NA NA NA NA NA NA NA NA NA NA NA
Q2 2009 NA NA NA NA NA NA NA NA NA NA NA NA
Q3 2009 NA NA NA NA NA NA NA NA NA NA NA NA
Q4 2009 NA NA NA NA NA NA NA NA NA NA NA NA
Ql 2010 NA NA NA NA NA NA NA NA NA NA NA NA
Q2 2010 NA NA NA NA NA NA NA NA NA NA NA NA
Q3 2010 NA NA NA NA NA NA NA NA NA NA NA NA
Q4 2010 NA NA NA NA NA NA NA NA NA NA NA NA
Ql 2011 NA NA NA NA NA NA NA NA NA NA NA NA
Q22011 NA NA NA NA NA NA NA NA NA NA NA NA
Q3 2011 NA NA NA NA NA NA NA NA NA NA NA NA
Q42011 NA NA NA NA NA NA NA NA NA NA NA NA
Ql 2012 NA NA NA NA NA NA NA NA NA NA NA NA
02 2012 NA NA NA NA NA NA NA NA NA NA NA NA
Q3 2012 NA NA NA NA NA NA NA NA NA NA NA NA
Q42012 NA NA NA NA NA NA NA NA NA NA NA NA
Ql 2013 NA NA NA NA NA NA NA NA NA NA NA NA
Q2 2013 NA NA NA NA NA NA NA NA NA NA NA NA
03 2013 NA NA NA NA NA NA NA NA NA NA NA NA
Q4 2013 NA NA NA NA NA NA NA NA NA NA NA NA
Ql 2014 NA NA NA NA NA NA NA NA NA NA NA NA
Q2 2014 NA NA NA NA NA NA NA NA NA NA NA NA
Q3 2014 NA NA NA NA NA NA NA NA NA NA NA NA
Q42014 NA NA NA NA NA NA NA NA NA NA NA NA
01 2015 24569.2 1130 92994 4 105083696 9 105 1 0 23 24156.7 1840 91433 1 168236921 5 168.2 0 37
Q2 2015 23989 9 1260 90801.8 114410232.1 114.4 0.25 22029.9 1650 83383.2 137582233 0 137.6 0.30
Q3 2015 23652.0 1060 89522.8 94894189.2 94.9 0.21 21586.9 1310 81706.4 107035405 6 107.0 0 24
Q4 2015 20764.3 1040 78592 9 81736590.5 81. 7 0,18 21769.8 2070 82398,7 170565294 5 170.6 0.38
Ql 2016 19255.6 974 72882.4 70987502.4 71.0 0.16 20944.6 1970 79275.3 156172362.7 156.2 0.34
Q2 2016 19588.2 1140 74141 3 84521124.2 84.5 0.19 20624.0 2070 78061.8 161588008.8 161.6 0 36
Q3 2016 15613.5 1160 59097.1 68552633.1 68.6 0.15 17487.4 1780 66189.8 117817860 0 117.8 0.26
Q4 2016 16756 8 1330 63424 5 84354569.0 84.4 0 19 19740.6 1600 74718.2 119549073.6 119.5 0 26
01 2017 16931.8 519 64086.9 33261081.9 33.3 0.07 19869,7 1570 75206.8 118074698.8 118.1 0 26
02 2017 18200.2 977 68887 8 67303338.6 67.3 0 15 18716 7 1940 70842,7 137434856.4 137.4 0 30
Q3 2017 17413 6 958 65910.5 63142236.0 63, 1 0.14 19338.8 1310 73197.4 95888539.0 95.9 0.21
04 2017 14089.8 556 53329 9 29651420,5 29 7 0 07 17327.6 1610 65585,0 105591795,3 105,6 0 23
Table G-1
Quarterly Calculation of Chloroform Removed and Total Volume of Water Pumped
TW4-0I TW4-02
Total Total Total Total Total Total Total Total Quarter Pumped Cone Pumped Total (ug) (grams) (pounds) Pumped Cone Pumped Total (ug) (grams) (pounds) (gal) (liters) (gal) (liters)
01 2018 12505,7 70.4 47334.1 3332318.8 3.3 0.01 16232 3 764 61439,3 46939591 ,2 46.9 010
Q2 2018 10814,8 942 40934.0 38559845.0 38.6 0.09 16051.4 949 60754,5 57656067.0 57.7 013
Q3 2018 9727.3 1010 36817.8 37186008.8 37.2 0.08 14927.2 980 564995 55369463.0 55.4 0.12
Q4 2018 9836.7 752 37231.9 27998395,9 28,0 0.06 15464 1 822 58531.6 48112990,4 48.1 0 11
Ql 2019 10603 ,6 87.2 40134.6 3499739.4 3.50 0.01 16169.9 1040.0 61203.1 63651194.4 63.65 0.14
Q2 2019 9393.9 1040.0 35555.9 36978148.0 36.98 0.08 13893.7 1360.0 52587. 7 71519210.1 71.52 0.16
Q3 2019 9734.1 894 36843 6 32938150.2 32.94 0 07 14106.9 797 53394.6 42555509.4 42 56 0.09
Q42019 9184.3 1070 34762,6 37195955.8 37.20 0.08 14220.9 934 53826.1 50273583.5 50.27 0.11
Ql 2020 8796 7 1190 33295 5 39621656 3 39 62 0 09 13162 I 1880 49818 5 93658871 ,2 93 66 0 21
02 2020 9600.2 499 36336 8 18132041.7 18.13 0.04 14155.6 1070 53578.9 57329472,2 57.33 0.13
Q3 2020 9487.3 1060 35909.4 38063996.3 38.06 0.08 14009.5 1260 53026.0 66812706,5 66 81 0 15
Q4 2020 9318.7 924 35271 3 32590662.3 32.59 O.D7 14582.9 1130 55196 3 62371792.4 62 37 0.14
QI 2021 9066.4 948 34316 3 32531875 2 32.53 0 07 13189.6 939 49922 6 46877355.2 46.88 0 10
Q2 2021 8764 1 957 33172.1 31745717 4 31.75 0.07 11975.9 1160 45328.8 52581386.5 52 58 0 12
Q3 2021 8677.2 821 32843.2 26964268.8 26.96 0 06 12694.5 1150 48048,7 55255984.9 55.26 0.12
Q4 2021 8873.4 957 33585.8 32141628.8 32.14 0.D7 12351.3 852 46749 7 39830719,J 39.83 0 09
Ql 2022 8251.8 946 31233.1 29546477.6 29.55 0.07 11380.6 1020 43075.6 43937082.4 43.94 0.10
Q2 2022 7616.0 914 28826.6 26347475.8 26.35 0.06 11518.1 892 43596.0 38887639,6 38.89 0.09
Q3 2022 8512.1 954 32218.3 30736256.8 30.74 0.07 10953.7 832 41459.8 34494515.7 34.49 0.08
04 2022 8450.8 1010 31986 3 32306140.8 32.31 0 07 12148.6 1030 45982.5 47361924 5 47.36 0 10
Ql 2023 7985 1 928 30223.6 28047504 0 28 05 0.06 10275 4 772 38892 4 30024924 3 30.02 0.D7
02 2023 7825 6 830 29619 9 24584513 7 24 58 0 05 11931 8 788 45161 9 35587548 0 35 59 0 08
Totals 433850 7 3.4 538988, 7 6.0
Table G-1
Quarterly Calculation of Chloroform Removed and Total Volume of Water Pumped
TW4-ll TW4-21
Total Total Total Total Total Total Total Total Quarter Pumped Cone Pumped Total (ug) (grams) (pounds) Pumped Cone Pumped Total (ug) (grams) (pounds) (gal) (liters) (gal) (liters)
Ql 2007 NA NA NA NA NA NA NA NA NA NA NA NA
Q2 2007 NA NA NA NA NA NA NA NA NA NA NA NA
Q3 2007 NA NA NA NA NA NA NA NA NA NA NA NA
Q4 2007 NA NA NA NA NA NA NA NA NA NA NA NA
Ql 2008 NA NA NA NA NA NA NA NA NA NA NA NA
02 2008 NA NA NA NA NA NA NA NA NA NA NA NA
03 2008 NA NA NA NA NA NA NA NA NA NA NA NA
Q4 2008 NA NA NA NA NA NA NA NA NA NA NA NA
Ql 2009 NA NA NA NA NA NA NA NA NA NA NA NA
Q2 2009 NA NA NA NA NA NA NA NA NA NA NA NA
Q3 2009 NA NA NA NA NA NA NA NA NA NA NA NA
Q4 2009 NA NA NA NA NA NA NA NA NA NA NA NA
Ql 2010 NA NA NA NA NA NA NA NA NA NA NA NA
Q2 2010 NA NA NA NA NA NA NA NA NA NA NA NA
03 2010 NA NA NA NA NA NA NA NA NA NA NA NA
Q42010 NA NA NA NA NA NA NA NA NA NA NA NA
Ql 2011 NA NA NA NA NA NA NA NA NA NA NA NA
02 2011 NA NA NA NA NA NA NA NA NA NA NA NA
Q3 2011 NA NA NA NA NA NA NA NA NA NA NA NA
Q42011 NA NA NA NA NA NA NA NA NA NA NA NA
Ql 2012 NA NA NA NA NA NA NA NA NA NA NA NA
Q2 2012 NA NA NA NA NA NA NA NA NA NA NA NA
Q3 2012 NA NA NA NA NA NA NA NA NA NA NA NA
Q4 2012 NA NA NA NA NA NA NA NA NA NA NA NA
Ql 2013 NA NA NA NA NA NA NA NA NA NA NA NA
02 2013 NA NA NA NA NA NA NA NA NA NA NA NA
Q3 2013 NA NA NA NA NA NA NA NA NA NA NA NA
Q42013 NA NA NA NA NA NA NA NA NA NA NA NA
Ql 2014 NA NA NA NA NA NA NA NA NA NA NA NA
Q2 2014 NA NA NA NA NA NA NA NA NA NA NA NA
Q3 2014 NA NA NA NA NA NA NA NA NA NA NA NA
Q42014 NA NA NA NA NA NA NA NA NA NA NA NA
QI 2015 9898.7 2450 37466.6 91793119.8 91.8 0.20 NA NA NA NA NA NA
Q22015 5243.3 2710 19845.9 53782363.3 53.8 0.12 30743 7 366 116364.9 42589555.0 42.6 0,09
Q3 2015 3584 4 1120 13567.0 15194988 5 15.2 0.03 125285.4 281 474205.2 133251672.2 133.3 0.29
Q42015 4110.3 2730 15557,5 42471935.4 42,5 0,09 134774.9 339 510123.0 172931695.8 172.9 0.38
Ql 2016 3676.2 2660 13914.4 37012349.2 37.0 0.08 125513.3 390 475067,8 185276457.8 185.3 0.41
Q2 2016 3760 4 3340 14233,1 47538600 8 47 5 0,10 132248 7 545 500561.3 272805924.6 272.8 0,60
Q3 2016 2953.8 3200 11180.1 35776425.6 35.8 0.08 110381 9 456 417795.5 190514744.1 190.5 0.42
Q4 2016 3050 2 3180 11545.0 36713122.3 36.7 0 08 130311 3 434 493228.3 214061069.4 214 1 0.47
QI 2017 2984.2 3310 11295.2 37387102.1 37.4 0.08 54333,5 598 205652.3 122980073,9 123.0 0.27
Q2 2017 2845.9 3370 10771.7 36300735.2 36 3 0 08 60969,7 224 230770.3 51692550 4 51 7 0.11
Q3 2017 2830,0 3290 10711.6 35240999.5 35.2 0 08 120116.2 537 454639.8 244141581.7 244 I 0.54
Q4 2017 2612.7 2880 9889-1 28480520.2 28 5 0 06 126492,5 466 478774.1 223108736.4 223 1 0.49
Table G-1
Quarterly Calculation of Chloroform Removed and Total Volume of Water Pumped
TW4-11 TW4-21
Total Total Total Total Total Total Total Total Quarter Pumped Cone Pumped Total (ug) (grams) (pounds) Pumped Cone Pumped Total (ug) (grams) (pounds) (gal) (liters) (gal) (liters)
01 2018 2571,0 3090 9731.2 30069516,2 30.1 0.D7 117832.0 421 445994, 1 1 87763524.5 187.8 0.41
Q2 2018 2513.5 2800 9513.6 26638073.0 26.6 0.06 116681.0 532 441637.6 234951195.2 235.0 0.52
Q3 2018 2170,2 3050 8214,2 25053331.4 25 1 0.06 110001.4 476 416355.3 198185122.3 198.2 044
Q4 2018 2379.5 2930 9006.4 26388774.0 26.4 0.06 121686.3 585 460582.8 269440914.0 269.4 0 59
Ql 2019 2342.4 2820 8866 0 25002074 9 25.00 0.06 123264 323 466554 6 150697141.8 150.70 0,3
Q2 2019 2195.1 2970 8308.5 24676106.9 24.68 0.05 106893.6 734 404592,3 296970730.6 297.0 0,7
Q3 2019 2046 0 2790 7744.1 21606066.9 21 61 0.05 108132.9 596 409283.,0 243932683.8 243 9 0.5
Q4 2019 1983 9 3250 7509.1 24404449.9 24.40 0.05 116167.55 794 439694.2 349117176.3 349_1 0.8
Ql 2020 1947 4 2990 7370 9 22039017,9 22 04 0,05 106622,01 844 403564.3 340608275.8 340.6 0,8
Q2 2020 2003.9 2810 7584.8 21313179.8 21 31 0.05 110999.13 767 420131.7 322241019.3 322.2 0.7
Q3 2020 1784.1 3070 6752.8 20731152.8 20.73 0.05 99515.11 920 376664.7 346531516.0 346.5 0.8
Q4 2020 1394,6 2670 5278 6 140937579 14 09 0.03 107061.16 948 405226,5 384154713.1 384 2 0,8
Ql 2021 2195.1 2750 8308.5 22848455 3 22.85 0.05 97211 49 400 367945.5 147178195.9 147.2 0.3
Q2 2021 1694.5 3320 6413 7 21293425.9 21.29 0 05 97157.60 1130 367741 ,5 415547913.1 415 5 0.9
Q3 2021 1560,8 2600 5907 6 15359832 8 15 36 0 03 93390 40 669 353482.7 236479902.2 236 5 0.5
Q4 2021 1485.5 2850 5622 6 16024459 9 16.02 0.04 102535.00 649 388095,0 251873638.8 251 9 0.6
Ql 2022 1497.2 2780 5666.9 15753987.6 15.75 0.D3 91105.40 469 344833.9 161727117.4 161.7 0.4
Q2 2022 1473 1 2550 5575 7 14217992 9 14 22 0.03 9168250 657 347018.3 227990998.5 228 0 0,5
Q3 2022 1304,3 3020 4936.9 14909290.6 14.91 0.03 87160,0 1070 329900.,7 352993 763.5 353.0 0.8
Q4 2022 1442 4 2900 5459.5 15832503 6 15.83 0.03 94463,6 482 357544,6 172336503.2 172 3 04
Ql 2023 1326.4 2430 5020.3 12199446.4 12.20 0.D3 83943,5 526 317726, 1 167123933.7 167.1 0.4
02 2023 1159 5 2510 4388 6 11015275.8 11 02 0 02 83501.7 768 316053.9 242729392 6 242 7 05
Totals 88020,5 2 1 3418178,6 16 7
Table G-1
Quarterly Calculation of Chloroform Removed and Total Volume of Water Pumped
TW4-37 TW4-39
Total Total Total Total Total Total Total Total Quarter Pumped Cone Pumped 'l'otal (ug) (grams) (pounds) Pumped Cone Pumped Total (ug) (grams) (pounds) (gal) (liters) (gal) (liters)
QI 2007 NA NA NA NA NA NA NA NA NA NA NA NA
Q2 2007 NA NA NA NA NA NA NA NA NA NA NA NA
03 2007 NA NA NA NA NA NA NA NA NA NA NA NA
Q4 2007 NA NA NA NA NA NA NA NA NA NA NA NA
QI 2008 NA NA NA NA NA NA NA NA NA NA NA NA
Q2 2008 NA NA NA NA NA NA NA NA NA NA NA NA
Q3 2008 NA NA NA NA NA NA NA NA NA NA NA NA
Q4 2008 NA NA NA NA NA NA NA NA NA NA NA NA
QI 2009 NA NA NA NA NA NA NA NA NA NA NA NA
02 2009 NA NA NA NA NA NA NA NA NA NA NA NA
Q3 2009 NA NA NA NA NA NA NA NA NA NA NA NA
Q42009 NA NA NA NA NA NA NA NA NA NA NA NA
Ql 2010 NA NA NA NA NA NA NA NA NA NA NA NA
02 2010 NA NA NA NA NA NA NA NA NA NA NA NA
Q3 2010 NA NA NA NA NA NA NA NA NA NA NA NA
Q4 2010 NA NA NA NA NA NA NA NA NA NA NA NA
QI 2011 NA NA NA NA NA NA NA NA NA NA NA NA
022011 NA NA NA NA NA NA NA NA NA NA NA NA
Q3 2011 NA NA NA NA NA NA NA NA NA NA NA NA
Q4201\ NA NA NA NA NA NA NA NA NA NA NA NA
QI 2012 NA NA NA NA NA NA NA NA NA NA NA NA
Q2 2012 NA NA NA NA NA NA NA NA NA NA NA NA
Q3 2012 NA NA NA NA NA NA NA NA NA NA NA NA
Q4 2012 NA NA NA NA NA NA NA NA NA NA NA NA
QI 2013 NA NA NA NA NA NA NA NA NA NA NA NA
Q2 2013 NA NA NA NA NA NA NA NA NA NA NA NA
Q3 2013 NA NA NA NA NA NA NA NA NA NA NA NA
Q4 2013 NA NA NA NA NA NA NA NA NA NA NA NA
Ql 2014 NA NA NA NA NA NA NA NA NA NA NA NA
02 2014 NA NA NA NA NA NA NA NA NA NA NA NA
Q3 2014 NA NA NA NA NA NA NA NA NA NA NA NA
04 2014 NA NA NA NA NA NA NA NA NA NA NA NA
Ql 2015 NA NA NA NA NA NA NA NA NA NA NA NA
Q2 2015 29206.0 30200 I 10544 7 3338450242 0 3338.5 7.4 NA NA NA NA NA NA
Q3 2015 118063,9 19100 446871 .9 8535252554. 7 8535 3 18.8 NA NA NA NA NA NA
Q420\5 111737.5 19500 422926.4 824 7065531.3 8247.1 18.2 NA NA NA NA NA NA
QI 2016 111591.0 17500 422371.9 7391508862.5 7391.5 16.3 NA NA NA NA NA NA
02 2016 119241.2 16200 451327 9 7311512660 4 7311.5 16.1 NA NA NA NA NA NA
03 2016 98377.6 15900 372359 592051 1534 .4 5920.5 131 NA NA NA NA NA NA
Q42016 101949,\ 16400 385877 6328388433 4 6328 4 14.0 3598.3 2800 13620 38134783.4 38.1 0.1
Ql 2017 97071.7 18000 367416 6613494921.0 6613.5 14.6 103117 8 6460 390301 2521343639 6 2521.3 5.56
Q2 2017 93191 3 15800 352729 5573119313 9 5573 I 12.3 41313.0 5560 156370 869415559.8 869 4 1.92
Q3 2017 81749.3 15000 309421 4641316507.5 4641.3 10.2 34546.3 10000 130758 1307577455 0 1307.6 29
Q4 2017 87529 6 15500 331300 5135142808 0 5135 1 11 3 68180.2 552 258062 142450255.5 142.5 0.3
Table G-1
Quanerly Calculation of Chloroform Removed and Total Volume of Water Pumped
TW4-37 TW4-39
Total Total Total Total Total Total Total Total Quarter Pumped Cone Pumped Total (ug) (grams) (pounds) Pumped Cone Pumped Total (ug) (grams) (pounds) (gal) (liters) (gal) (liters)
012018 84769.3 12900 320852 4138988226.5 4139,0 9,1 59262 2 2870 224307 643762315.5 643.8 1.4
Q2 2018 83653.1 14400 316627 4559428562.4 4559.4 10,1 34259 8 7160 129673 928461135,9 928.5 20
Q3 2018 77457.8 14100 293178 4133806599.3 4133.8 9.1 33473.4 8180 126697 1036379979.4 1036.4 2.3
04 2018 76271.4 15200 288687 4388046184.8 4388.0 9.7 37003.6 6520 140059 913182241.5 913.2 2.0
01 2019 77591 13300 293683 4 3905989871 7 3906 0 8.6 49117 885 185907,5 164528107,9 164.5 0.4
Q2 2019 64950.1 16200 245836.1 3982545281.7 3982.5 8.8 34285.7 8640 129771.4 1121224675.7 1121.2 2.5
Q3 2019 67572 0 11900 255760 0 3043544238 0 3043 5 6.7 36976 2 4240 139954,9 593408848, 1 593 4 1.3
04 2019 66732.4 13100 252582.1 3308825955.4 3308.8 7.3 51808.6 1650 196095,6 323557659.2 323.6 0.7
Ql 2020 65554 2 12000 248122.6 2977471764 0 2977.5 6.6 43169.3 812 163395,8 132677390.0 132 7 03
Q2 2020 65163 8 11700 246645.0 2885746301 l 2885.7 6.4 37352.7 5870 141380,0 829900421 .0 829.9 1.8
Q3 2020 56659.3 13800 214455.5 2959485216.9 2959.5 6.5 35628 2 5960 134852,7 803 7223 l 2.5 803.7 I 8
04 2020 61323.9 10300 232111.0 2390742903.5 2390.7 5.3 46794.2 648 177116.0 114771198,5 114.8 0.3
01 2021 59907.4 9380 226749.5 21269 l 0394.4 2126.9 4.7 38932.4 2970 147359.l 43 7656628,0 437.7 1.0
Q2 2021 58564.2 13000 221665.5 2881651461 0 2881 .7 6.4 32865.2 2490 124394.8 309743007.2 309 7 0,7
Q3 2021 49987.5 10200 189202.7 1929867412.5 1929.9 4.3 31436.6 858 l l 8987.5 102091301.6 102.1 0.2
04 2021 46649 1 14800 l 76566.8 26 l 3 l 89283.8 2613 2 5.8 42730.6 776 161735.3 125506609, 1 125 5 0,3
Ql 2022 42923.5 13700 162465 4 2225776630.8 2225.8 4.9 35550.2 724 134557.5 97419635.1 97.4 0.2
Q2 2022 41998 3 46800 158963.6 7439494865.4 7439 5 16.4 31354.2 982 l l 8675.6 116539485.4 I 16.5 0.3
Q3 2022 39640.3 11600 150038.5 1740447011.8 l 740.4 3.8 31305.9 843 118492,8 99889457 0 99.9 0.2
Q4 2022 43251 9 9640 163708 4 1578149376 1 1578 1 3,5 39072.6 1720 14 7889,8 254370440.5 254.4 0.6
Ql 2023 44536.9 8010 168572.2 1350263053. 7 1350.3 3.0 35659.0 1850 l 34969.3 249693232.8 249.7 0.6
Q2 2023 42641 9 8160 1613996 1 31 7020666 6 1317 0 29 28777 7 3330 108923 6 362715569 7 362 7 U 8
Totals 2367507 9 301.8 1097570.8 32.3
Table G-1
Quarterly Calculation of Chloroform Removed and Total Volume of Water Pumped
TW4-40 TW4-41
Total Total Total Total Total Total Total Total Total Total Volume
Quarter Pumped Cone Pumped Total (ug) (grams) (pounds) Pumped Cone Pumped Total (ug) (grams) (pounds) (pounds) Pumped
(gal) (liters) (gal) (liters) (gallons)
QI 2007 NA NA NA NA NA NA NA NA NA NA NA NA 286,9 9648896.0
Q2 2007 NA NA NA NA NA NA NA NA NA NA NA NA 4.0 904550.0
Q3 2007 NA NA NA NA NA NA NA NA NA NA NA NA 9.0 559220.0
Q4 2007 NA NA NA NA NA NA NA NA NA NA NA NA 10.6 550560.0
Ql 2008 NA NA NA NA NA NA NA NA NA NA NA NA 13.8 503034.0
Q2 2008 NA NA NA NA NA NA NA NA NA NA NA NA 14.8 527290.0
Q3 2008 NA NA NA NA NA NA NA NA NA NA NA NA 26.8 724960.0
042008 NA NA NA NA NA NA NA NA NA NA NA NA 22,7 786870.0
QI 2009 NA NA NA NA NA NA NA NA NA NA NA NA 10.0 664830.0
02 2009 NA NA NA NA NA NA NA NA NA NA NA NA 13,5 1007400.0
Q3 2009 NA NA NA NA NA NA NA NA NA NA NA NA 18.5 399710.0
Q4 2009 NA NA NA NA NA NA NA NA NA NA NA NA 49.4 1047335 0
Ql 2010 NA NA NA NA NA NA NA NA NA NA NA NA 45 492485 0
Q2 2010 NA NA NA NA NA NA NA NA NA NA NA NA 16.5 721374.1
Q3 2010 NA NA NA NA NA NA NA NA NA NA NA NA 10.6 376623.4
Q4 2010 NA NA NA NA NA NA NA NA NA NA NA NA 17,9 1041817 3
Ql 2011 NA NA NA NA NA NA NA NA NA NA NA NA 24.9 696533.0
Q2 2011 NA NA NA NA NA NA NA NA NA NA NA NA 13.1 449131.1
03 2011 NA NA NA NA NA NA NA NA NA NA NA NA 8.1 462334.5
Q4201 I NA NA NA NA NA NA NA NA NA NA NA NA 10 8 468706.3
QI 2012 NA NA NA NA NA NA NA NA NA NA NA NA 10,6 448486.3
Q2 2012 NA NA NA NA NA NA NA NA NA NA NA NA 10.4 400415.2
Q3 2012 NA NA NA NA NA NA NA NA NA NA NA NA 6.6 390229.0
Q4 2012 NA NA NA NA NA NA NA NA NA NA NA NA 7,1 358000.0
QI 2013 NA NA NA NA NA NA NA NA NA NA NA NA 13.7 634286.1
Q2 2013 NA NA NA NA NA NA NA NA NA NA NA NA 13.5 768953.4
Q3 2013 NA NA NA NA NA NA NA NA NA NA NA NA 31 .1 950505.6
Q4 2013 NA NA NA NA NA NA NA NA NA NA NA NA 10.3 990119.8
Ql 2014 NA NA NA NA NA NA NA NA NA NA NA NA 8,6 859297,5
Q2 2014 NA NA NA NA NA NA NA NA NA NA NA NA 9.9 838057.9
Q3 2014 NA NA NA NA NA NA NA NA NA NA NA NA 10 2 852987.2
Q42014 NA NA NA NA NA NA NA NA NA NA NA NA 14.6 673905.9
QI 2015 NA NA NA NA NA NA NA NA NA NA NA NA 9,9 458271.4
Q2 2015 NA NA NA NA NA NA NA NA NA NA NA NA 15.3 539592.9
Q3 2015 NA NA NA NA NA NA NA NA NA NA NA NA 33 4 816299.8
04 2015 NA NA NA NA NA NA NA NA NA NA NA NA 32.3 847567.8
QI 2016 NA NA NA NA NA NA NA NA NA NA NA NA 30.6 819302.3
02 2016 NA NA NA NA NA NA NA NA NA NA NA NA 39.4 832418.9
Q3 2016 NA NA NA NA NA NA NA NA NA NA NA NA 24.7 686543 4
Q4 2016 NA NA NA NA NA NA NA NA NA NA NA NA 25.6 750667.4
QI 2017 NA NA NA NA NA NA NA NA NA NA NA NA 27.2 667899 I
Q2 2017 NA NA NA NA NA NA NA NA NA NA NA NA 19.6 657232 5
Q3 2017 NA NA NA NA NA NA NA NA NA NA NA NA 28.5 754250-1
Q4 2017 NA NA NA NA NA NA NA NA NA NA NA NA 16.9 841953.7
Table G-1
Quarterly Calculation of Chloroform Removed and Total Volume of Water Putnpcd
TW4-40 TW4-41
Total Total Total Total Total Total Total Total Total Total Volume
Quarter Pumped Cone Pumped Total (ug) (grams) (pounds) Pumped Cone Pumped Total (ug) (grams) (pounds) (pounds) Pumped
(gal) (liters) (gal) (liters) (gallons)
01 2018 NA NA NA NA NA NA NA NA NA NA NA NA 18 0 810330.4
Q2 2018 NA NA NA NA NA NA 7371 L2 1400 278997 390595648.8 390_6 0_9 20-1 803034.5
Q3 2018 NA NA NA NA NA NA 44981 6 1390 170255 236654 734.4 236.7 05 17 6 733435,6
Q4 2018 NA NA NA NA NA NA 35431_6 1320 134108 177023110.1 177.0 0.4 20,8 800443.6
QI 2019 NA NA NA NA NA NA 31904 1220 120755.1 147321253.7 147.3 0,3 16 2 811589 4
Q2 2019 81762.7 263 309471.8 81391088.5 81.4 0.18 25146.5 1320 95179.5 125636943.3 125 6 03 26 2 750139.6
Q3 2019 116414 2 380 440627.7 167438543.9 167 4 0,37 24045.6 1190 91012.6 I 08304989.2 108.3 0.2 18.3 794827 4
Q4 2019 I 08281.89 314 409847.0 12869 I 943.4 128.7 0.28 21186 4 1410 80190.5 113068638.8 113.1 0.2 13 0 844887.9
QI 2020 102021 .51 364 386151 4 140559115.2 140.6 0,31 17289 9 1200 65442,3 78530725.8 78.5 0.2 18.9 802209.2
Q22020 100757.13 367 381365.7 I 39961225.5 140.0 0.3 I I 7294.9 1220 65461,1 79862567.4 79 9 02 25.2 910974.8
Q3 2020 86264.50 333 326511.1 I 08 728207. I 108.7 0.24 13411.4 1110 50762.3 56346111.4 56 3 01 13.4 766734.5
Q4 2020 77535,9 264 293473.5 77477002.7 77.5 0.17 17765.7 1020 67243.3 68588115.2 68 6 02 9.6 828651 4
QI 2021 72543.4 436 274576.7 119715421.8 119.7 0.26 13407.5 1170 50747.3 593743 I 0.5 59.4 0.1 16.8 759810.1
Q2 2021 66866.4 343 253089.3 86809638 I 86,8 0,19 13168,7 1130 49843.5 56323188.3 56 3 0,1 11.8 738065 6
03 2021 58841.0 301 222713 2 67036668_7 67.0 0.15 13821.0 1100 52312.5 57543733.5 57.5 0.1 13.4 716109.4
04 2021 57357.9 286 217099.7 62090500 3 62,1 0,14 12449,1 1030 47119,8 48533438,8 48 5 0.1 16.1 753893 2
QI 2022 53009_2 238 200639.8 47752277.6 47.8 0.1 I 12247.8 1030 46357.9 47748660.7 47.7 0.1 84 692614-3
Q2 2022 52135.2 323 197331 7 63738149 4 63 .7 0.14 11013,9 1010 41687 6 42104487,6 42 1 0.1 21.8 680997 0
03 2022 45416.2 302 171900.4 51913918.6 51.9 0.11 11108.0 1060 42043 9 44566527.2 44 6 0.1 12.3 6708 I 9.9
Q4 2022 48263.2 298 182676 I 54437488 6 54.4 0,12 11722.6 1050 44369.9 46588384.1 46.6 0.1 15.0 7437102
QI 2023 45062.1 259 170560.2 44 I 75082.0 44,2 0.10 11577.2 985 438 I 9.8 43162518.3 43.2 0.1 5.9 682889 4
Q2 2023 45516 3 220 172279 0 37901381 4 37 .9 0 08 10239 7 1040 38757 2 40307515 7 40 3 0 1 11 4 6413126
Totals 1218048.7 3 3 442923 8 4.6 1386.2 54390334 I
Table G-2
Chloroform Mass Removal Per Well Per Quarter
MW-4 MW-26 TW4-19 TW4-20 TW4-4 TW4-22 TW4-24 TW4-2S TW4-01 TW4-02 TW4-11 TW4-21 TW4-37 TW4-39 TW4-40 TW4-41 Quarter
Quarter• Obs.) (lbs.) (lbs.) (lbs.)•• (lbs.) (lbs.) (lbs.) (lbs.) (lbs.) (lbs.) (lbs.) (lbs.) (lbs.) (lbs.) (lbs.) (lbs.) Totals (lbs.)
QI 2007 36.8 12.9 150.2 87.0 NA NA NA NA NA NA NA NA NA NA NA NA 286.9
02 2007 1.4 0.1 0.0 2.5 NA NA NA NA NA NA NA NA NA NA NA NA 4.0
03 2007 2.2 0.8 2.9 3.1 NA NA NA NA NA NA NA NA NA NA NA NA 9.0
Q4 2007 1.7 1.0 3.1 4,8 NA NA NA NA NA NA NA NA NA NA NA NA 10.6
Ql 2008 1.7 0.4 4.6 7.2 NA NA NA NA NA NA NA NA NA NA NA NA 13.8
02 2008 1.3 0.5 3.2 9.9 NA NA NA NA NA NA NA NA NA NA NA NA 14.8
Q3 2008 1 2 0.3 15.9 9.3 NA NA NA NA NA NA NA NA NA NA NA NA 26 8
04 2008 1.3 0.3 20.7 0.4 NA NA NA NA NA NA NA NA NA NA NA NA 22.7
Ql 2009 1.7 0.4 4.3 3.6 NA NA NA NA NA NA NA NA NA NA NA NA 10.0
Q2 2009 6.8 0.2 3.7 2.8 NA NA NA NA NA NA NA NA NA NA NA NA 13.5
Q3 2009 1.5 0.4 11.1 5,5 NA NA NA NA NA NA NA NA NA NA NA NA 18.5
04 2009 4.8 0.6 17.8 26 1 NA NA NA NA NA NA NA NA NA NA NA NA 49 4
Ql 2010 0.9 0.4 2.7 0.4 NA NA NA NA NA NA NA NA NA NA NA NA 4.5
Q2 2010 1 5 1.0 6.8 5,9 1.4 NA NA NA NA NA NA NA NA NA NA NA 16.5
Q3 2010 1.3 1.2 20 4,9 1.3 NA NA NA NA NA NA NA NA NA NA NA 10 6
Q4 2010 1.1 0.5 7.7 7.4 L2 NA NA NA NA NA NA NA NA NA NA NA 17.9
Ql 2011 1.1 0.2 12.9 9.6 1.1 NA NA NA NA NA NA NA NA NA NA NA 24,9
Q2 2011 1.2 0.8 5.3 4,6 LI NA NA NA NA NA NA NA NA NA NA NA 13.1
Q3 2011 1.2 0.4 1.1 4.1 1.2 NA NA NA NA NA NA NA NA NA NA NA 8.1
04 2011 L2 0,8 V 4.8 1.4 NA NA NA NA NA NA NA NA NA NA NA 10.8
Ql 2012 1.1 0,6 0.8 7.0 1.0 NA NA NA NA NA NA NA NA NA NA NA 10.6
Q2 2012 11 0.7 07 6,9 1.1 NA NA NA NA NA NA NA NA NA NA NA 10 4
03 2012 1.1 07 1.4 2.4 1.1 NA NA NA NA NA NA NA NA NA NA NA 66
Q4 2012 0.9 0.3 2.0 3.2 0.8 NA NA NA NA NA NA NA NA NA NA NA 7.2
Ql 2013 0.9 0.4 74 2.8 0.7 1.5 o.o 0.0 NA NA NA NA NA NA NA NA 13 7
Q2 2013 0.9 0.9 3.9 4.4 0.7 2.7 0.0 0.0 NA NA NA NA NA NA NA NA 13.5
03 2013 0,9 0,6 22.3 4.4 0.7 2.1 0.1 0.0 NA NA NA NA NA NA NA NA 31.1
Q4 2013 0.8 03 3.2 2.5 0.7 2.8 0,1 0.0 NA NA NA NA NA NA NA NA 10 3
Ql 2014 0.8 0.3 1.5 2.8 0.6 2.5 0.2 0.0 NA NA NA NA NA NA NA NA 8.6
Q2 2014 0.8 0.4 2.0 3.4 0,6 2.5 0.1 0.0 NA NA NA NA NA NA NA NA 99
Q3 2014 0.9 0.4 36 1.8 0.8 2.5 0,1 0.0 NA NA NA NA NA NA NA NA 10 2
04 2014 0.8 04 7.1 3.2 0.6 2.5 0.04 00 NA NA NA NA NA NA NA NA 14.6
QI 2015 0.9 0.4 24 2,6 0.4 2.3 0.04 00 0.23 0.37 0.20 NA NA NA NA NA 9.9
Q2 2015 0,7 0,5 1.0 2.8 0.7 1.6 0,00 0.0 0 25 0.30 0.12 0,09 7.4 NA NA NA 15 3
Q3 2015 1.0 0.4 7.6 2.5 0.7 1.6 0.03 0.0 0.21 0.24 0.D3 0,29 18,8 NA NA NA 33.4
04 2015 1.0 0.4 7.4 2.2 0.6 1.5 0.02 0.0 0.18 0 38 0,09 0.38 18,2 NA NA NA 32.3
Ql 2016 0.9 0.4 7.6 2.6 0.6 1.2 0.02 0.0 0.16 0.34 0.08 0.41 16.3 NA NA NA 30.6
Q2 2016 1 3 0.4 13,0 4.4 0.9 1.9 0,04 00 0,19 0 36 0 10 0.60 16 1 NA NA NA 39.4
Q3 2016 1.0 0.5 5.2 2.4 0.6 1.1 0.01 0.0 0.15 0.26 0.08 0.42 13.1 NA NA NA 24.7
04 2016 1.0 0.4 5.8 2.3 0.4 0.7 0.017 0.0 0.19 0,26 0.08 0.47 14.0 0,1 NA NA 25.6
Ql 2017 09 0.3 1.1 2,6 0.3 1.1 0.Q15 0.0 0 07 0 26 0 08 0,27 14 6 5,6 NA NA 27.2
Q2 2017 0.9 0.5 0.5 1.9 0.3 0.7 0.008 0.0 0.15 0.30 0.08 0,11 12.3 1,9 NA NA 19.6
Q3 2017 1.1 0.3 8.3 3.4 0.3 1.1 0.008 0.0 0.14 0.21 0.08 0,54 10,2 2,9 NA NA 28.5
Q4 2017 I 2 0.6 0,1 1.4 0,2 0.9 0.014 0.0 0.07 0 23 0 06 0.49 11.3 0.3 NA NA 16.9
QI 2018 1.2 0.3 2.4 1.8 0.2 0.9 0.020 0.0 0.01 0.10 0.07 0.41 9.1 1.4 NA NA 18.0
Q2 2018 1.1 0.4 2.8 1.3 0,2 0,6 0,022 0,0 0,09 0,13 0,06 0,52 10.1 2,0 NA 0,9 20.1
Q3 2018 1.0 0.4 1.7 1.1 0.1 0.6 0.016 0.0 0.08 0 12 0.06 0.44 9,1 2.3 NA 0,5 17 6
Q4 2018 1.1 0.3 4.7 1.0 0.1 0.5 0 018 0.0 0 06 0.11 0.06 0,59 9,7 2,0 NA 0.4 20.8
Ql 2019 1.1 0.2 2.0 1.9 0.1 0.9 0.023 0.0 0.01 0.14 0.06 0.33 8.6 0.4 NA 0.3 16.2
Q2 2019 1 0 0,3 97 1,5 0.1 0,9 0 013 00 0 08 0 16 0,05 0,65 8.8 2,5 0 18 0,3 26 1
Q3 2019 0.9 0.3 5.6 1.2 0.1 0.7 0.014 0.0 0.07 0.09 0.05 0.5 6.7 1.3 0.37 0.2 18.3
Q4 2019 1.1 03 0.5 0,6 0.1 0.8 0.037 0.0 0.08 0.1 1 0.05 0_8 7.3 0,7 0 28 02 13.0
01 2020 1.1 0,2 7.0 1.1 0,1 0,8 0.044 0.0 0.09 0.21 0.05 0.8 6.6 0,3 0_31 0.2 18.9
Table G-2
Chloroform Mass Removal Per Well Per Quarter
MW-4 MW-26 TW4-19 TW4-20 TW4-4 TW4-22 TW4-24 TW4-25 TW4-0l TW4-02 TW4-ll TW4-21 TW4-37 TW4-39 TW4-40 TW4-41 Quarter
Quarter• Obs.) (lbs.) Obs.) (lbs.)•• (lbs.) (lbs.) (lbs.) (lbs.) (lbs.) (lbs.) (lbs.) (lbs.) (lbs.) (lbs.) (lbs.) (lbs.) Totals (lbs.)
02 2020 1.1 0.3 8.7 4.9 0.1 0.5 0.024 0.0 0.04 0.13 0.05 0.7 6.4 1.8 0.31 0.2 25.2
Q3 2020 0,9 02 L7 o.o 0 1 0.7 0.028 0.0 0.08 0 15 0 05 0.8 6.5 1.8 0.24 0.1 13.4
04 2020 0.8 0.2 0.8 0.0 0.1 0.7 0.063 0.0 0.07 0.14 0.03 0.8 5.3 0.3 0.17 0.2 9.6
Ql 2021 0,9 0,7 7.4 o.o 0.1 1.0 0.066 00 0 07 0,10 0 05 03 47 1.0 0,26 0.1 16 8
02 2021 1.0 0.2 1.0 0.0 0,1 0.9 0.019 0.0 0.07 0.12 0.05 0.9 6.4 0.7 0.19 0,1 11.8
03 2021 09 0.4 5.9 0.0 0.1 0.7 0.046 o.o 0.06 0.12 0.03 0.5 4.3 0,2 0.15 0.1 13 4
04 2021 0.9 0.2 7.2 0.0 0 1 0 .. 6 0.090 00 0.07 0 09 0.04 0.6 5 8 0.3 0.14 0.1 16 1
Ql 2022 0.8 0.3 0.6 0.0 0.1 0.6 0.070 0.0 0.07 0.10 0.03 0.4 4.9 0.2 0.11 0.1 8.4
02 2022 0.8 0 1 2.6 0,0 OJ 0,5 0.052 0.0 0.06 0.09 0.03 0.5 16.4 0.3 0.14 0.1 21.8
Q3 2022 0.8 0,1 5,4 0.0 0.1 0,6 0 043 00 0 07 0,08 0.03 0.8 3 8 0,2 0.1 1 0.1 12 3
Q4 2022 0.9 0.3 8.5 0.0 0.1 0.4 0_067 0.0 0.07 0.10 0.03 0.4 3.5 0.6 0.12 0.1 15.0
01 2023 0.8 0.1 0.3 0.0 0 1 0.3 0.060 0.0 0.06 0 07 0.03 0.4 3.0 0.6 0.10 0.1 5 9
02 2023 08 0.5 47 0.0 0 1 06 0 025 00 0.05 0.08 0 02 05 29 0.8 0 08 0.1 11 4
Well Totals 115.6 40.4 485.7 296.2 26.8 49.6 1.7 o.o 3.4 6.0 2.1 16,7 301.8 32 3 3.3 4.6 1386.2
• QI 2007 represents the cumula1ivc toaal rrior to and includini. QI 2007.
** TW4-20 collapsed in August 2020 and was abandoned on October I, 2020
Table G-3 Well Pumping Rates and Volumes
Volume of Water Pumped
Pumping Well Name During the Quarter (gals) Average Pump Rate (gpm)
MW-4 91310.8 4.0
MW-26 25207.6 16.0
TW4-19 117218.0 16.0
TW4-4 7407.0 16.0
TWN-2 23193.7 15.9
TW4-22 22375.4 16.0
TW4-24 52081.4 15.9
TW4-25 94118.3 12.5
TW4-01 7825.6 12.6
TW4-02 11931.8 16.0
TW4-11 1159.5 15.6
TW4-21 83501.7 16.0
TW4-37 42641.9 18.0
TW4-39 28777.7 18.0
TW4-40 45516.3 18.0
TW4-41 10239.7 5.8
D -N 0 Chloroform Removed (Pounds) 0 -:i ->. ->. "' "' (.,.) (.,.) ..., 01 0 01 0 01 0 01 (1) "Cl 0 0 0 0 0 0 p 0 ..., 0 0 0 0 0 0 0 0 (1)
{I]
(1) ::i Q1 2007 -{I] Q2 2007 st-(1) Q3 2007
(") Q4 2007 c:: 3 Q1 2008 c:: Q2 2008 ~ Q3 2008 <" Q4 2008 (1) -Q1 2009 0 ..... Q2 2009 s:,, -Q3 2009 "Cl ..., Q4 2009 o· Q1 2010 ..., ..... Q2 2010 0
s:,, Q3 2010 ::i Q4 2010 0.. s· Q1 2011
(") Q2 2011 c:: 0.. Q3 2011 ~ s· Q4 2011 -(JC/ ll)
D Q1 2012 CJ) -Q2 2012 CJ)
N Q3 2012 0 0 -0 Q4 2012 (") ;--J Q1 2013 ::r Q2 2013 0 Q3 2013 ....
Q4 2013 0 o' Q1 2014 ....
Q2 2014 3 Q3 2014 ::0 Q4 2014 CD Q1 2015 3 Q2 2015 0 Q3 2015 <
Q4 2015 CD a. Q1 2016 O" Q2 2016 '< Q3 2016 0 Q4 2016 C Q1 2017 ll)
Q2 2017 ;:::i.
Q3 2017 CD .... Q4 2017 -Q1 2018 O"
Q2 2018 CJ)
Q3 2018 .........
Q4 2018
Q1 2019
Q2 2019
Q3 2019
Q4 2019
Q1 2020
Q2 2020
Q3 2020
Q4 2020
Q1 2021
Q2 2021
Q3 2021
04 2021
01 2022
02 2022
03 2022
04 2022
01 2023
02 2023
Chloroform Removed (Pounds)
0 0 0 0 0
0 N :i:,.. 0) (X)
02 2010
03 2010
04 2010
01 2011
02 2011
03 2011
04 2011
01 2012
02 2012
03 2012
04 2012
01 2013
02 2013
03 2013
04 2013
01 2014
02 2014
03 2014
04 2014
01 2015
02 2015
03 2015
04 2015
01 2016
02 2016
03 2016
04 2016
01 2017
02 2017
03 2017
04 2017
01 2018
02 2018
03 2018
04 2018
01 2019
02 2019
03 2019
04 2019
01 2020
02 2020
03 2020
04 2020
01 2021
02 2021
03 2021
04 2021
01 2022
02 2022
03 2022
04 2022
01 2023
02 2023
...... ...... ...... ......
0 N :i:,.. 0)
'
i I
0 ~ s::
DJ en en
0 -(') =s-o -,
0 o'
3
:::u CD 3
0 < CD a.
O" '<
0 C DJ
~ -, -a= en -
/0 -N 0 0 -..l ..,
(1) -0 .., Q1 2007 (1) "' (1) Q2 2007 ::i ,...,. Q3 2007 "' g. Q4 2007 (1) Q1 2008 (") C Q2 2008 3 C Q3 2008 s, Q4 2008 ,...,. :;t Q1 2009 (1) ..... Q2 2009 0 ..... Q3 2009 !:?..
-0 Q4 2009 .., Q1 2010 o· .., Q2 2010 ,...,.
0 Q3 2010 § Q4 2010 0.. Q1 2011 a·
(") Q2 2011 2" Q3 2011 0.. a· Q4 2011 (Jq Q1 2012 /0 Q2 2012 -N Q3 2012 0 Q4 2012 0 ;--l Q1 2013
Q2 2013
Q3 2013
Q4 2013
Q1 2014
Q2 2014
Q3 2014
Q4 2014
Q1 2015
Q2 2015
Q3 2015
Q4 2015
Q1 2016
Q2 2016
Q3 2016
Q4 2016
Q1 2017
Q2 2017
Q3 2017
Q4 2017
Q1 2018
Q2 2018
Q3 2018
Q4 2018
Q1 2019
Q2 2019
Q3 2019
Q4 2019
Q1 2020
Q2 2020
Q3 2020
Q4 2020
Q1 2021
Q2 2021
Q3 2021
Q4 2021
Q1 2022
Q2 2022
Q3 2022
Q4 2022
Q1 2023
Q2 2023
Chloroform Removed (Pounds)
~ ~►
. t
t
•
0
• ◄ . ............ : ;s.:
► ••
• •
◄ .
t
. . .
◄ . • -.
-.. '. -►
►
-►
! ◄•
► I◄
•• . ◄
-► ◄
►
-◄
►
►
►
. ►
' .
•
·► -
-
-.
• ◄ .
•t
••
. t
'
I,
'
0
0
•
•
►
01
0
' .....
0
' .....
01 N 0
,
N 01
'
(,J
0
(,J
01
.i:,..
0
s: ~ 0 ~ s: n>
CJ>
CJ>
0 -(") :::,-
0 -,
0 o' -,
3
::a CD 3 0 < CD c..
C'" '<
0
C n>
;:::i CD -, --C'" CJ> .........
9
0 0
+ 01 2015
02 2015
03 2015
04 2015
01 2016
02 2016
03 2016
04 2016
01 2017
02 2017
03 2017
04 2017
01 2018
02 2018
03 2018
04 2018
01 2019
02 2019
03 2019
04 2019
01 2020
02 2020
03 2020
04 2020
01 2021
02 2021
03 2021
04 2021
01 2022
02 2022
03 2022
04 2022
01 2023
02 2023
Chloroform Removed (Pounds)
9 9 9
0 0,
_..
0
_..
0,
0 N 0
0
N 0,
0
(,J
0
i I 0 ......
s:
ll)
C/) en
0 -(')
'::T
0 a
o' -,
3
:::0 CD 3
0 < CD a.
O" '<
0
C w ~ -, ........
O" en ..._...
0
0
0
+ Q1 2015
Q2 2015
Q3 2015
Q4 2015
Q1 2016
Q2 2016
Q3 2016
Q4 2016
Q1 2017
Q2 2017
Q3 2017
Q4 2017
Q1 2018
Q2 2018
Q3 2018
Q4 2018
Q1 2019
Q2 2019
Q3 2019
Q4 2019
Q1 2020
Q2 2020
Q3 2020
Q4 2020
Q1 2021
Q2 2021
Q3 2021
Q4 2021
Q1 2022
Q2 2022
Q3 2022
Q4 2022
Q1 2023
Q2 2023
Chl~form ~moved ~ounds)9
0 01
......
0
......
01
N 0
0
N 01
9
(.,.)
0
0
(.,.)
01
0 ~ 0
--i ~ I 0 I\.)
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MW-26 Volume Pumped by Quarter (gal.)
1000000
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~~~~~~~~◊◊◊◊~◊~~~~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ &~&~&~&~&~&~&~&~&~&~&~~~&~&~&~&~&
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TabH
Laboratory Analytical Reports
Chemtech-Ford Laboratories 9632 South 500 West
Sandy, UT 84070
0:[phone] F: [phone]
www.ChemtechFord.com
Serving the lntermountain West Since 1953
CHEMTECH-FORD
:.A80RAfORIES.
Energy Fuels Resources, Inc.
Tanner Holliday
6425 South Highway 191
Blanding, UT 84511
Sample ID: MW-04_06132023
Matrix: Water
Date Sampled: 6/13/23 10:03
Inorganic
Chloride
Nitrate+ Nitrite, Total, as N
\ ol,1tilc Organic Compounds
Carbon Tetrachloride
Chloroform
Chloromethane
Methylene Chloride
37.0
4.20
< 1.0
1050
2.0
< 1.0
Project Name: 2nd Quarter Chlorform 2023
www.ChemtechFord.com
mg/L
mg/L
ug/L
ug/L
ug/L
ug/L
Certificate of Analysis
Minimum
Reporting
Limit
1.00
0.100
1.0
100
1.0
1.0
PO#:
Receipt: 6/15/23 10:55@ -2.3 "C
Date Reported: 6/28/2023
Project Name: 2nd Quarter Chlorform 2023
Sampled By: Tanner Holliday
Method
EPA300.0
EPA353.2
EPA 8260D /5030A
EPA 8260D /5030A
EPA 8260D /5030A
EPA 8260D /5030A
CtF WO#: 23F1268
Preparation
Date/Time
6/19/23
6/19/23
6/15/23
6/15/23
6/15/23
6/15/23
Lab ID: 23F1268-11
Analysis
Date/Time
6/19/23
6/!9/23
6/l 5/23
6/15/23
6/15/23
6/15/23
Flag{s)
Page 13 of 32
Chemtech-Ford Laboratories 9632 South 500 West
Sandy, UT 84070
0 :[phone] F: [phone]
www.ChemtechFord.com
Serving the lntermountain West Since 1953
CHEMTECH-FORD
!..ABO~ATORIE:S
Energy Fuels Resources, Inc.
Tanner Holliday
6425 South Highway 191
Blanding, UT 84511
Sample ID: TW4-01_06132023
Matrix: Water
Date Sampled: 6/13/23 10:10
Inorganic
Chloride
Nitrate+ Nitrite, Total, as N
\olatilc Organic Compounds
Carbon Tetrachloride
Chloroform
Chloromethane
Methylene Chloride
42.5
3.87
< 1.0
830
I.I
< 1.0
Proiect Name: 2nd Quarter Chlorform 2023
www.ChemtechFord.com
Units
mg/L
mg/L
ug/L
ug/L
ug/L
ug/L
Certificate of Analysis
Minimum
Reporting
Limit
1.00
0.100
1.0
50.0
1.0
1.0
PO#:
Receipt: 6/15/23 10:55@ -2.3 ·c
Date Reported: 6/28/2023
Project Name: 2nd Quarter Chlorform 2023
Sampled By: Tanner Holliday
Method
EPA300.0
EPA353.2
EPA 8260D /5030A
EPA 8260D /5030A
EPA 8260D /5030A
EPA 8260D /5030A
CtF WO#: 23F1268
Preparation
Date/Time
6119/23
6/19/23
6/15/23
6/15/23
6/15/23
6/15/23
Lab ID: 23Fl268-08
Analysis
Date/Time
6/19/23
6/19/23
6/15/23
6/15/23
6/15/23
6/15/23
Page 10 of 32
Chemtech-Ford Laboratories 9632 South 500 West
Sandy, UT 84070
0:[phone] F: [phone]
www.ChemtechFord.com
Serving the lntermountain West Since 1953
CHEMTECH-FORD
:..ABORArORIES
Energy Fuels Resources, Inc.
Tanner Holliday
6425 South Highway 191
Blanding, UT 84511
Sample ID: TW4-02_06132023
Matrix: Water
Date Sampled: 6/13/23 9:55
Inorganic
Chloride
Nitrate+ Nitrite, Total, as N
Volalilc Organic Compounds
Carbon Tetrachloride
Chloroform
Chloromethane
Methylene Chloride
38.1
3.70
< 1.0
788
1.2
< 1.0
Proiect Name: 2nd Quarter Chlorform 2023
www.ChemtechFord.com
Units
mg/L
mg/L
ug/L
ug/L
ug/L
ug/L
Certificate of Analysis
Minimum
Reporting
Limit
1.00
0.100
1.0
50.0
1.0
1.0
PO#:
Receipt: 6/15/23 10:55@ -2.3 °C
Date Reported: 6/28/2023
Project Name: 2nd Quarter Chlorform 2023
Sampled By: Tanner Holliday
Method
EPA300.0
EPA353.2
EPA 8260D /5030A
EPA 8260D /5030A
EPA 8260D /5030A
EPA 8260D /5030A
CtF WO#: 23F1268
Preparation
Date/Time
6/19/23
6/19/23
6/15/23
6/15/23
6/15/23
6/15/23
Lab ID: 23F1268-07
Analysis
Date/Time
6/19/23
6/19/23
6/15/23
6/15/23
6/15/23
6/15/23
Flag(s)
Page 9 of 32
Chemtech-Ford Laboratories 9632 South 500 West
Sandy, UT 84070
0:[phone] F: [phone]
www.ChemtechFord.com
Serving the lntermountain West Since 1953
CHEMTECH-FORD
:..ABOMArOP.IES
Energy Fuels Resources, Inc.
Tanner Holliday
6425 South Highway 191
Blanding, UT 84511
Sample ID: TW4-03_06152023
Matrix: Water
Date Sampled: 6/15/23 6:20
Inorganic
Chloride
Nitrate+ Nitrite, Total, as N
Volatile Organic Compounds
Carbon Tetrachloride
Chloroform
Chloromethane
Methylene Chloride
Result
23.5
6.38
< 1.0
< 1.0
< 1.0
< 1.0
Proiect Name: 2nd Quarter Chloroform 2023
www.ChemtechFord.com
Units
mg/L
mg/L
ug/L
ug/L
ug/L
ug/L
Certificate of Analysis
Minimum
Reporting
Limit
1.00
0.200
1.0
1.0
1.0
1.0
PO#:
Receipt: 6/16/23 10:50@ 1.3 ·c
Date Reported: 6/28/2023
Project Name: 2nd Quarter Chloroform 2023
Sampled By: Tanner Holliday
EPA300.0
EPA353.2
EPA 8260D /5030A
EPA 8260D /5030A
EPA 8260D /5030A
EPA 8260D /5030A
CtF WO#: 23F1372
Preparation
Date/Time
6/19/23
6/19/23
6/21/23
6/21/23
6/21/23
6/21/23
Lab ID: 23F1372-01
Analysis
Date/Time
6/20/23
6/19/23
6/21/23
6/21/23
6/21/23
6/21/23
Flag(s)
Page 3 of 24
I Chemtech-Ford Laboratories 9632 South 500 West
Sandy, UT 84070
0:[phone] F: [phone]
www.ChemtechFord.com
Serving the lntermountain West Since 1953
CHEMTECH-FORD
lABORAfORIE-S
Energy Fuels Resources, Inc.
Tanner Holliday
6425 South Highway 191
Blanding, UT 84511
Sample ID: TW4-03R_06142023
Matrix: Water
Date Sampled: 6/14/23 6:30
Inorganic
Chloride
Nitrate+ Nitrite, Total, as N
Volatile Organic Compounds
Carbon Tetrachloride
Chloroform
Chloromethane
Methylene Chloride
Result
< 1.00
<0.100
< 1.0
2.0
< 1.0
< 1.0
Proiect Name: 2nd Quarter Chlorform 2023
www.ChemtechFord.com
Units
mg/L
mg/L
ug/L
ug/L
ug/L
ug/L
Certificate of Analysis
Minimum
Reporting
Limit
1.00
0.100
1.0
1.0
1.0
1.0
PO#:
Receipt: 6/15/23 10:55@ -2.3 °C
Date Reported: 6/28/2023
Project Name: 2nd Quarter Chlorform 2023
Sampled By: Tanner Holliday
Method
EPA300.0
EPA353.2
EPA 8260D /5030A
EPA 8260D /5030A
EPA 8260D /5030A
EPA 8260D /5030A
CtF WO#: 23F1268
Preparation
Date/Time
6/19/23
6/19/23
6/16/23
6/16/23
6/16/23
6/16/23
Lab ID: 23Fl268-l 7
Analysis
Date/Time
6/20/23
6/19/23
6/16/23
6/16/23
6/16/23
6/l 6/23
.fug{fil
Page 19 of 32
I Chemtech-Ford Laboratories 9632 South 500 West
Sandy, UT 84070
0:[phone] F: [phone]
www.ChemtechFord.com
Serving the lntermountain West Since 1953
CHEMTECH-FORD
~ABORATOP.r~S
Energy Fuels Resources, Inc.
Tanner Holliday
6425 South Highway 191
Blanding, UT 84511
Sample ID: TW4-04_06132023
Matrix: Water
Date Sampled: 6/13/23 10:26
Inorganic
Chloride
Nitrate+ Nitrite, Total, as N
Volatile Organic Compounds
Carbon Tetrachloride
Chlorofonn
Chloromethane
Methylene Chloride
39.7
6.82
< 1.0
1980
1.9
< 1.0
Proiect Name: 2nd Quarter Chlorform 2023
www.ChemtechFord.com
Units
mg/L
mg/L
ug/L
ug/L
ug/L
ug/L
Certificate of Analysis
Minimum
Reporting
Limit
1.00
0.200
1.0
100
1.0
1.0
PO#:
Receipt: 6/15/23 10:55@ -2.3 °C
Date Reported: 6/28/2023
Project Name: 2nd Quarter Chlorform 2023
Sampled By: Tanner Holliday
EPA300.0
EPA353.2
EPA 8260D /5030A
EPA 8260D /5030A
EPA 8260D /5030A
EPA 8260D /5030A
CtF WO#: 23F1268
Preparation
Date/Time
6/19/23
6/19/23
6/15/23
6/15/23
6/15/23
6/15/23
Lab ID: 23F1268-09
Analysis
Date/Time
6/19/23
6/19/23
6/15/23
6/15/23
6/15/23
6/15/23
Flag(s)
Page 11 of 32
Chemtech-Ford Laboratories 9632 South 500 West
Sandy, UT 84070
0:[phone] F: [phone]
www.ChemtechFord.com
Serving the lntermountain West Since 1953
CHEMTECH-FORD
:..ABOP.ATORIE:.S
Energy Fuels Resources, Inc.
Tanner Holliday
6425 South Highway 191
Blanding, UT 84511
Sample ID: TW4-05_06212023
Matrix: Water
Date Sampled: 6/21/23 7:25
Inorganic
Chloride
Nitrate+ Nitrite, Total, as N
\'olalilc Organic Compounds
Carbon Tetrachloride
Chloroform
Chloromethane
Methylene Chloride
Result
52.5
7.13
< 1.0
8.1
< 1.0
< 1.0
Proiect Name: 2nd Quarter Chloroform 2023
www.ChemtechFord.com
Units
mg/L
mg/L
ug/L
ug/L
ug/L
ug/L
Certificate of Analysis
Minimum
Reporting
Limit
1.00
0.500
1.0
1.0
1.0
1.0
PO#:
Receipt: 6/22/23 13:30@ -2.2 ·c
Date Reported: 6/30/2023
Project Name: 2nd Quarter Chloroform 2023
Sampled By: Tanner Holliday
Method
EPA300.0
EPA353.2
EPA 8260D /5030A
EPA 8260D /5030A
EPA 8260D /5030A
EPA 8260D /5030A
CtF WO#: 23F1815
Preparation
Date/Time
6/26/23
6/26/23
6/26/23
6/26/23
6/26/23
6/26/23
Lab ID: 23Fl815-10
Analysis
Date/Time
6/27/23
6/26/23
6/26/23
6/26/23
6/26/23
6/26/23
~
Page 12 of 34
Chemtech-Ford Laboratories 9632 South 500 West
Sandy, UT 84070
0:[phone] F: [phone]
www.ChemtechFord.com
Serving the lntermountain West Since 1953
CHEMTECH-FORD
LABORATORIES
Energy Fuels Resources, Inc.
Tanner Holliday
6425 South Highway 191
Blanding, UT 84511
Sample ID: TW4-06_06202023
Matrix: Water
Date Sampled: 6/20/23 7:43
Inorganic
Chloride
Nitrate+ Nitrite, Total, as N
Volatile Organic Compounds
Carbon Tetrachloride
Chloroform
Chloromethane
Methylene Chloride
Result
44.7
0.134
< 1.0
2.3
< 1.0
< 1.0
Proiect Name: 2nd Quarter Chloroform 2023
www.ChemtechFord.com
Units
mg/L
mg/L
ug/L
ug/L
ug/L
ug/L
Certificate of Analysis
Minimum
Reporting
Limit
1.00
0.100
1.0
1.0
1.0
1.0
PO#:
Receipt: 6/22/23 13:30@ -2.2 ·c
Date Reported: 6/30/2023
Project Name: 2nd Quarter Chloroform 2023
Sampled By: Tanner Holliday
Method
EPA300.0
EPA353.2
EPA 8260D /5030A
EPA 8260D /5030A
EPA 8260D /5030A
EPA 8260D /5030A
CtF WO#: 23F1815
Preparation
Date/Time
6/26/23
6/26/23
6/26/23
6/26/23
6/26/23
6/26/23
Lab ID: 23Fl815-06
Analysis
Date/Time
6/27/23
6/26/23
6/26/23
6/26/23
6/26/23
6/26/23
Flag(s)
Page 8 of 34
I Chemtech-Ford Laboratories 9632 South 500 West
Sandy, UT 84070
0 :[phone] F: [phone]
www.ChemtechFord.com
Serving the lntermountain West Since 1953
CHEMTECH·FORD
:.AB ORATORIES
Energy Fuels Resources, Inc.
Tanner Holliday
6425 South Highway 191
Blanding, UT 84511
Sample ID: TW4-07 _06212023
Matrix: Water
Certificate of Analysis
PO#:
Receipt: 6/22/23 13:30 @ -2.2 ·c
Date Reported: 6/30/2023
Project Name: 2nd Quarter Chloroform 2023
Date Sampled: 6/21/23 8:51 Sampled By: Tanner Holliday
Inorganic
Chloride
Nitrate+ Nitrite, Total, as N
\ olatile Organic Compounds
Carbon Tetrachloride
Chloroform
Chloromethane
Methylene Chloride
45.7
3.89
< 1.0
706
< 1.0
< 1.0
Proiect Name: 2nd Quarter Chloroform 2023
www.ChemtechFord.com
Units
mg/L
mg/L
ug/L
ug/L
ug/L
ug/L
Minimum
Reporting Preparation
1.00
0.100
1.0
50.0
1.0
1.0
Method
EPA300.0
EPA353.2
EPA 8260D /5030A
EPA 8260D /5030A
EPA 8260D /5030A
EPA 8260D /5030A
CtF WO#: 23F1815
Date/Time
6/26/23
6/27/23
6/26/23
6/26/23
6/26/23
6/26/23
Lab ID: 23F1815-18
Analysis
Date/Time
6/27/23
6/27/23
6/26/23
6/26/23
6/26/23
6/26/23
Page 20 of 34
Chemtech-Ford Laboratories 9632 South 500 West
Sandy, UT 84070
0:[phone] F: [phone]
www.ChemtechFord.com
Serving the lntermountain West Since 1953
CHEMTECH-FORD
!..ABOllAT0RIE:$
Energy Fuels Resources, Inc.
Tanner Holliday
6425 South Highway 191
Blanding, UT 84511
Sample ID: TW4-08_06212023
Matrix: Water
Date Sampled: 6/21/23 7:33
lnor~anic
Chloride
Nitrate + Nitrite, Total, as N
\ ola!ile Organic Compounds
Carbon Tetrachloride
Chloroform
Chloromethane
Methylene Chloride
Result
55.3
0.597
< 1.0
8.3
< 1.0
< 1.0
Proiect Name: 2nd Quarter Chloroform 2023
www.ChemtechFord.com
Units
mg/L
mg/L
ug/L
ug/L
ug/L
ug/L
Certificate of Analysis
Minimum
Reporting
Limit
1.00
0.100
1.0
1.0
1.0
1.0
PO#:
Receipt: 6/22/23 13:30@ -2.2 °C
Date Reported: 6/30/2023
Project Name: 2nd Quarter Chloroform 2023
Sampled By: Tanner Holliday
Method
EPA300.0
EPA353.2
EPA 8260D /5030A
EPA 8260D /5030A
EPA 8260D /5030A
EPA 8260D /5030A
CtF WO#: 23F1815
Preparation
Date/Time
6/26/23
6/26/23
6/26/23
6/26/23
6/26/23
6/26/23
Lab ID: 23F1815-ll
Analysis
Date/Time
6/27/23
6/26/23
6/26/23
6/26/23
6/26/23
6/26/23
Flag(s)
Page 13 of 34
I Chemtech-Ford Laboratories 9632 South 500 West
Sandy, UT 84070
0:[phone] F: [phone]
www.ChemtechFord.com
Serving the lntermountain West Since 1953
CHEMTECH-FORD
l ABOAATORIE:S
Energy Fuels Resources, Inc.
Tanner Holliday
6425 South Highway 191
Blanding, UT 84511
Sample ID: TW4-08R_06202023
Matrix: Water
Date Sampled: 6/20/23 9:40
Inorganic
Chloride
Nitrate+ Nitrite, Total, as N
Volatile Organic Compounds
Carbon Tetrachloride
Chloroform
Chloromethane
Methylene Chloride
< 1.00
< 0.100
< 1.0
1.8
< 1.0
< 1.0
Project Name: 2nd Quarter Chloroform 2023
www.ChemtechFord.com
Units
mg/L
mg/L
ug/L
ug/L
ug/L
ug/L
Certificate of Analysis
Minimum
Reporting
Limit
1.00
0.100
1.0
1.0
1.0
1.0
PO#:
Receipt: 6/22/23 13:30@ -2.2 ·c
Date Reported: 6/30/2023
Project Name: 2nd Quarter Chloroform 2023
Sampled By: Tanner Holliday
Method
EPA300.0
EPA353.2
EPA 8260D /5030A
EPA 8260D /5030A
EPA 8260D /5030A
EPA 8260D /5030A
CtF WO#: 23F1815
Preparation
Date/Time
6/26/23
6/26/23
6/26/23
6126123
6/26123
6/26123
Lab ID: 23Fl815-04
Analysis
Date/Time
6/27/23
6/26123
6/26/23
6/26/23
6/26/23
6126123
Page 6 of 34
I Chemtech-Ford Laboratories 9632 South 500 West
Sandy, UT 84070
0:[phone] F: [phone]
www.ChemtechFord.com
Serving the lntermountain West Since 1953
CHEMTECH-FORD
c..Aff():Pl i1UOIU I
Energy Fuels Resources, Inc.
Tanner Holliday
6425 South Highway 191
Blanding, UT 84511
Sample ID: TW4-09_06212023
Matrix: Water
Date Sampled: 6/21/23 7:15
Inorganic
Chloride
Nitrate+ Nitrite, Total, as N
Volatile Organic Compounds
Carbon Tetrachloride
Chloroform
Chloromethane
Methylene Chloride
Result
38.0
0.742
< 1.0
5.0
< 1.0
< 1.0
Proiect Name: 2nd Quarter Chloroform 2023
www.ChemtechFord.com
mg/L
mg/L
ug/L
ug/L
ug/L
ug/L
Certificate of Analysis
Minimum
Reporting
Limit
1.00
0.100
1.0
1.0
1.0
1.0
PO#:
Receipt: 6/22/23 13:30@ -2.2 ·c
Date Reported: 6/30/2023
Project Name: 2nd Quarter Chloroform 2023
Sampled By: Tanner Holliday
EPA300.0
EPA353.2
EPA 8260D /5030A
EPA 8260D /5030A
EPA 8260D /5030A
EPA 8260D /5030A
CtF WO#: 23F1815
Preparation
Date/Time
6/26/23
6/26/23
6/26/23
6/26/23
6/26/23
6/26/23
Lab ID: 23Fl815-09
Analysis
Date/Time
6/27/23
6/26/23
6/26/23
6/26/23
6/26/23
6/26/23
Page 11 of 34
I Chemtech-Ford Laboratories 9632 South 500 West
Sandy, UT 84070
0:[phone] F: [phone]
www.ChemtechFord.com
Serving the lntermountain West Since 1953
CHEMTECH-FORD
LABORATORIE:5
Energy Fuels Resources, Inc.
Tanner Holliday
6425 South Highway 191
Blanding, UT 84511
Sample ID: TW4-10_06212023
Matrix: Water
Date Sampled: 6/21/23 8:30
Inorganic
Chloride
Nitrate+ Nitrite, Total, as N
Volatile Organic Compounds
Carbon Tetrachloride
Chloroform
Chloromethane
Methylene Chloride
Result
46.9
3.76
< 1.0
322
< 1.0
< 1.0
Proiect Name: 2nd Quarter Chloroform 2023
www.ChemtechFord.com
Units
mg/L
mg/L
ug/L
ug/L
ug/L
ug/L
Certificate of Analysis
Minimum
Reporting
Limit
1.00
0.100
1.0
50.0
1.0
1.0
PO#:
Receipt: 6/22/23 13:30@ -2.2 ·c
Date Reported: 6/30/2023
Project Name: 2nd Quarter Chloroform 2023
Sampled By: Tanner Holliday
Method
EPA300.0
EPA353.2
EPA 8260D /5030A
EPA 8260D /5030A
EPA 8260D /5030A
EPA 8260D /5030A
CtF WO#: 23F1815
Preparation
Date/Time
6/26/23
6/27/23
6/26/23
6/26/23
6/26/23
6/26/23
Lab ID: 23F1815-16
Analysis
Date/Time
6/27/23
6/27/23
6/26/23
6/26/23
6/26/23
6/26/23
Page 18 of 34
Chemtech-Ford Laboratories 9632 South 500 West
Sandy, UT 84070
0 :[phone] F: [phone]
www.ChemtechFord.com
Serving the lntermountain West Since 1953
CHEMTECH-FORD
!..ABORAfORIES
Energy Fuels Resources, Inc.
Tanner Holliday
6425 South Highway 191
Blanding, UT 84511
Sample ID: TW4-11_06132023
Matrix: Water
Certificate of Analysis
PO#:
Receipt: 6/15/23 10:55@ -2.3 "C
Date Reported: 6/28/2023
Project Name: 2nd Quarter Chlorform 2023
Date Sampled: 6/13/23 9:48 Sampled By: Tanner Holliday
Inorganic
Chloride
Nitrate+ Nitrite, Total, as N
\olatik On:anic Compounds
Carbon Tetrachloride
Chloroform
Chloromethane
Methylene Chloride
Result
40.9
6.70
< 1.0
2510
2.9
< 1.0
Project Name: 2nd Quarter Chlorform 2023
www.ChemtechFord.com
Units
mg/L
mg/L
ug/L
ug/L
ug/L
ug/L
Minimum
Reporting Preparation
Limit
1.00
0.200
1.0
100
1.0
1.0
EPA300.0
EPA353.2
EPA 8260D /5030A
EPA 8260D /5030A
EPA 8260D /5030A
EPA 8260D /5030A
CtF WO#: 23F1268
Date/Time
6/19/23
6/19/23
6/15/23
6/15/23
6/15/23
6/15/23
Lab ID: 23F1268-14
Analysis
Date/Time
6/20/23
6/19/23
6/15/23
6/15/23
6/15/23
6/15/23
Page 16 of 32
Chemtech-Ford Laboratories 9632 South 500 West
Sandy, UT 84070
0:[phone] F: [phone]
www.ChemtechFord.com
Serving the lntermountain West Since 1953
CHEMTECH-FORD
LABORATORIES
Energy Fuels Resources, Inc.
Tanner Holliday
6425 South Highway 191
Blanding, UT 84511
Sample ID: TW4-12_06152023
Matrix: Water
Date Sampled: 6/15/23 6:46
Inorganic
Chloride
Nitrate + Nitrite, Total, as N
\ olatile (>i-ganic Compounds
Carbon Tetrachloride
Chlorofonn
Chloromethane
Methylene Chloride
43.6
4.72
< 1.0
< 1.0
< 1.0
< 1.0
Proiect Name: 2nd Quarter Chloroform 2023
www.ChemtechFord.com
Units
mg/L
mg/L
ug/L
ug/L
ug/L
ug/L
Certificate of Analysis
Minimum
Reporting
Limit
1.00
0.100
1.0
1.0
1.0
1.0
PO#:
Receipt: 6/16/23 10:50@ 1.3 ·c
Date Reported: 6/28/2023
Project Name: 2nd Quarter Chloroform 2023
Sampled By: Tanner Holliday
Method
EPA300.0
EPA353.2
EPA 8260D /5030A
EPA 8260D /5030A
EPA 8260D /5030A
EPA 8260D /5030A
CtF WO#: 23F1372
Preparation
Date/Time
6/20/23
6/l 9/23
6/16/23
6/16/23
6/l 6/23
6/16/23
Lab ID: 23F1372-03
Analysis
Date/Time
6/20/23
6/19/23
6/16/23
6/16/23
6/16/23
6/16/23
.E!!Jilll
Page 5 of 24
I Chemtech-Ford Laboratories 9632 South 500 West
Sandy, UT 84070
0:[phone] F: [phone]
www.ChemtechFord.com
Serving the lntermountain West Since 1953
CH EMTECH-FORD
~ABOP.ATORIES
Energy Fuels Resources, Inc.
Tanner Holliday
6425 South Highway 191
Blanding, UT 84511
Sample ID: TW4-13_06152023
Matrix: Water
Date Sampled: 6/15/23 7:08
lno1·ganic
Chloride
Nitrate+ Nitrite, Total, as N
Volatile Organic Compounds
Carbon Tetrachloride
Chloroform
Chloromethane
Methylene Chloride
Result
63.2
4.60
< 1.0
< 1.0
< 1.0
< 1.0
Proiect Name: 2nd Quarter Chloroform 2023
www.ChemtechFord.com
Units
mg/L
mg/L
ug/L
ug/L
ug/L
ug/L
Certificate of Analysis
Minimum
Reporting
Limit
1.00
0.100
1.0
1.0
1.0
1.0
PO#:
Receipt: 6/16/23 10:50 @ 1.3 ·c
Date Reported: 6/28/2023
Project Name: 2nd Quarter Chloroform 2023
Sampled By: Tanner Holliday
Method
EPA300.0
EPA353.2
EPA 8260D /5030A
EPA 8260D /5030A
EPA 8260D /5030A
EPA 8260D /5030A
CtF WO#: 23F1372
Preparation
Date/Time
6/20/23
6/19/23
6/16/23
6/16/23
6/16/23
6/16/23
Lab ID: 23F1372-06
Analysis
Date/Time
6/20/23
6/19/23
6/16/23
6/16/23
6/16/23
6/16/23
fug{tl
Page 8 of 24
Chemtech-Ford Laboratories 9632 South 500 West
Sandy, UT 84070
0:[phone] F: [phone]
www.ChemtechFord.com
Serving the lntermountain West Since 1953
CHEMTECH-FORD
!..ABOF!ATORrl:S.
Energy Fuels Resources, Inc.
Tanner Holliday
6425 South Highway 191
Blanding, UT 84511
Sample ID: TW4-14_06152023
Matrix: Water
Date Sampled: 6/15/23 7:15
Inorganic
Chloride
Nitrate+ Nitrite, Total, as N
Volatile Organic Compounds
Carbon Tetrachloride
Chloroform
Chloromethane
Methylene Chloride
Result
50.0
6.12
< 1.0
< 1.0
< 1.0
< 1.0
Proiect Name: 2nd Quarter Chloroform 2023
www.ChemtechFord.com
mg/L
mg/L
ug/L
ug/L
ug/L
ug/L
Certificate of Analysis
Minimum
Reporting
Limit
1.00
0.200
1.0
1.0
1.0
1.0
PO#:
Receipt: 6/16/23 10:50@ 1.3 ·c
Date Reported: 6/28/2023
Project Name: 2nd Quarter Chloroform 2023
Sampled By: Tanner Holliday
Method
EPA300.0
EPA353.2
EPA 8260D /5030A
EPA 8260D /5030A
EPA 8260D /5030A
EPA 8260D /5030A
CtF WO#: 23F1372
Preparation
Date/Time
6/20/23
6/19/23
6/16/23
6/16/23
6/16/23
6/16/23
Lab ID: 23Fl372-07
Analysis
Date/Time
6/20/23
6/19/23
6/16/23
6/16/23
6/16/23
6/16/23
Flag(s)
Page 9 of 24
Chemtech-Ford Laboratories 9632 South 500 West
Sandy, UT 84070
0 :[phone] F: [phone]
www.ChemtechFord.com
Serving the lntermountain West Since 1953
CHEMTECH-FORO
~ABORAfORlf:S
Energy Fuels Resources, Inc.
Tanner Holliday
6425 South Highway 191
Blanding, UT 84511
Sample ID: MW-26_06132023
Matrix: Water
Date Sampled: 6/13/23 9:40
Inorganic
Chloride
Nitrate+ Nitrite, Total, as N
\ olatik Organic Compounds
Carbon Tetrachloride
Chloroform
Chloromethane
Methylene Chloride
Result
57.6
0.294
< l.0
2230
2.7
< 1.0
Project Name: 2nd Quarter Chlorform 2023
www.ChemtechFord.com
Units
mg/L
mg/L
ug/L
ug/L
ug/L
ug/L
Certificate of Analysis
Minimum
Reporting
Limit
1.00
0.100
1.0
100
1.0
l.0
PO#:
Receipt: 6/15/23 10:55@ -2.3 ·c
Date Reported: 6/28/2023
Project Name: 2nd Quarter Chlorform 2023
Sampled By: Tanner Holliday
Method
EPA300.0
EPA353.2
EPA 8260D /5030A
EPA 8260D /5030A
EPA 8260D /5030A
EPA 8260D /5030A
CtF WO#: 23F1268
Preparation
Date/Time
6/19/23
6/19/23
6/15/23
6/15/23
6/15/23
6/15/23
Lab ID: 23F1268-06
Analysis
Date/Time
6/19/23
6/19/23
6/15/23
6/15/23
6/15/23
6/15/23
Flag(s)
Page 8 of 32
Chemtech-Ford Laboratories 9632 South 500 West
Sandy, UT 84070
0 :[phone] F: [phone]
www.ChemtechFord.com
Serving the lntermountain West Since 1953
CHEMTECH-FORD
LAB0RATORIE5
Energy Fuels Resources, Inc.
Tanner Holliday
6425 South Highway 191
Blanding, UT 84511
Sample ID: TW4-16_06212023
Matrix: Water
Date Sampled: 6/21/23 8:24
Inorganic
Chloride
Nitrate + Nitrite, Total, as N
\ olatilr C>i-ganic Compounds
Carbon Tetrachloride
Chloroform
Chloromethane
Methylene Chloride
Result
94.2
5.02
< 1.0
227
< 1.0
< 1.0
Project Name: 2nd Quarter Chloroform 2023
www.ChemtechFord.com
Units
mg/L
mg/L
ug/L
ug/L
ug/L
ug/L
Certificate of Analysis
Minimum
Reporting
Limit
1.00
0.500
1.0
10.0
1.0
1.0
PO#:
Receipt: 6/22/23 13:30@ -2.2 °C
Date Reported: 6/30/2023
Project Name: 2nd Quarter Chloroform 2023
Sampled By: Tanner Holliday
EPA300.0
EPA353.2
EPA 8260D /5030A
EPA 8260D /5030A
EPA 8260D /5030A
EPA 8260D /5030A
CtF WO#: 23F1815
Preparation
Date/Time
6/26123
6/27123
6/26/23
6/26/23
6126/23
6/26/23
Lab ID: 23Fl815-15
Analysis
Date/Time
6/27/23
6/27/23
6/26/23
6/26/23
6126/23
6126123
Page 17 of 34
I Chemtech-Ford Laboratories 9632 South 500 West
Sandy, UT 84070
0 :[phone] F: [phone]
www.ChemtechFord.com
Serving the lntermountain West Since 1953
CHEMTECH-FORD
~ABORATORIES
Energy Fuels Resources, Inc.
Tanner Holliday
6425 South Highway 191
Blanding, UT 84511
Sample ID: MW-32_06142023
Matrix: Water
Date Sampled: 6/14/23 11 :10
Inorganic
Chloride
Nitrate+ Nitrite, Total, as N
\ olalile Organic Compounds
Carbon Tetrachloride
Chloroform
Chloromethane
Methylene Chloride
36.8
<0.100
< 1.0
< 1.0
< 1.0
< 1.0
Proiect Name: 2nd Quarter Chlorform 2023
www.ChemtechFord.com
Units
mg/L
mg/L
ug/L
ug/L
ug/L
ug/L
Certificate of Analysis
Minimum
Reporting
Limit
1.00
0.100
1.0
1.0
1.0
1.0
PO#:
Receipt: 6/15/23 10:55@ -2.3 ·c
Date Reported: 6/28/2023
Project Name: 2nd Quarter Chlorform 2023
Sampled By: Tanner Holliday
Method
EPA300.0
EPA353.2
EPA 8260D /5030A
EPA 8260D /5030A
EPA 8260D /5030A
EPA 8260D /5030A
CtF WO#: 23F1268
Preparation
Date/Time
6/19/23
6/19/23
6/15/23
6/15/23
6/15/23
6/15/23
Lab ID: 23F1268-19
Analysis
Date/Time
6/20/23
6/19/23
6/15/23
6/15/23
6/15/23
6/15/23
Flag(s)
Page 21 of 32
Chemtech-Ford Laboratories 9632 South 500 West
Sandy, UT 84070
0:[phone] F: [phone]
www.ChemtechFord.com
Serving the lntermountain West Since 1953
CHEMTECH-FORD
1,.,,11.ff(U A';OMlt:I
Energy Fuels Resources, Inc.
Tanner Holliday
6425 South Highway 191
Blanding, UT 84511
Sample ID: TW4-18_06212023
Matrix: Water
Date Sampled: 6/21/23 8:04
Inorganic
Chloride
Nitrate+ Nitrite, Total, as N
\;olatilc Organic Compounds
Carbon Tetrachloride
Chloroform
Chloromethane
Methylene Chloride
47.1
3.40
< 1.0
54.6
< 1.0
< 1.0
Project Name: 2nd Quarter Chloroform 2023
www.ChemtechFord.com
Units
mg/L
mg/L
ug/L
ug/L
ug/L
ug/L
Certificate of Analysis
Minimum
Reporting
Limit
1.00
0.100
1.0
1.0
1.0
1.0
PO#:
Receipt: 6/22/23 13:30@ -2.2 ·c
Date Reported: 6/30/2023
Project Name: 2nd Quarter Chloroform 2023
Sampled By: Tanner Holliday
Method
EPA300.0
EPA353.2
EPA 8260D /5030A
EPA 8260D /5030A
EPA 8260D /5030A
EPA 8260D /5030A
CtF WO#: 23F1815
Preparation
Date/Time
6/26/23
6/27/23
6/26/23
6/26/23
6/26/23
6/26/23
Lab ID: 23Fl815-14
Analysis
Date/Time
6/27/23
6/27/23
6/26/23
6/26/23
6/26/23
6/26/23
~
Page 16 of 34
I Chemtech-Ford Laboratories 9632 South 500 West
Sandy, UT 84070
0:[phone] F: [phone]
www.ChemtechFord.com
Serving the lntermountain West Since 1953
CHEMTECH-FORD
~ABORATORIES
Energy Fuels Resources, Inc.
Tanner Holliday
6425 South Highway 191
Blanding, UT 84511
Sample ID: TW4-19_06132023
Matrix: Water
Date Sampled: 6/13/23 12:35
lnorg;anic
Chloride
Nitrate+ Nitrite, Total, as N
\'olatilc Oq.(anic Compounds
Carbon Tetrachloride
Chloroform
Chloromethane
Methylene Chloride
Result
167
6.68
3.1
4850
3.4
< 1.0
Proiect Name: 2nd Quarter Chlorform 2023
www.ChemtechFord.com
Units
mg/L
mg/L
ug/L
ug/L
ug/L
ug/L
Certificate of Analysis
Minimum
Reporting
Limit
5.00
0.200
1.0
100
1.0
1.0
PO#:
Receipt: 6/15/23 10:55 @ -2.3 ·c
Date Reported: 6/28/2023
Project Name: 2nd Quarter Chlorform 2023
Sampled By: Tanner Holliday
Method
EPA300.0
EPA353.2
EPA 8260D /5030A
EPA 8260D /5030A
EPA 8260D /5030A
EPA 8260D /5030A
CtF WO#: 23F1268
Preparation
Date/Time
6/19/23
6/19/23
6/15/23
6/15/23
6/15/23
6/15/23
Lab ID: 23F1268-03
Analysis
Date/Time
6/19/23
6/19/23
6/15/23
6/15/23
6/15/23
6/15/23
~
Page 5 of 32
Chemtech-Ford Laboratories 9632 South 500 West
Sandy, UT 84070
0 :[phone] F: [phone]
www.ChemtechFord.com
Serving the lntermountain West Since 1953
CHEMTECH-FORD
!.ABOMATORIES
Energy Fuels Resources, Inc.
Tanner Holliday
6425 South Highway 191
Blanding, UT 84511
Sample ID: TW4-21_06132023
Matrix: Water
Date Sampled: 6/13/23 7:35
Inorganic
Chloride
Nitrate + Nitrite, Total, as N
\olatilr Organic Compounds
Carbon Tetrachloride
Chloroform
Chloromethane
Methylene Chloride
Result
397
17.3
< 1.0
768
1.4
< 1.0
Proiect Name: 2nd Quarter Chlorform 2023
www.ChemtechFord.com
Units
mg/L
mg/L
ug/L
ug/L
ug/L
ug/L
Certificate of Analysis
Minimum
Reporting
Limit
10.0
0.500
1.0
50.0
1.0
1.0
PO#:
Receipt: 6/15/23 10:55 @ -2.3 ·c
Date Reported: 6/28/2023
Project Name: 2nd Quarter Chlorform 2023
Sampled By: Tanner Holliday
Method
EPA300.0
EPA353.2
EPA 8260D /5030A
EPA 8260D /5030A
EPA 8260D /5030A
EPA 8260D /5030A
CtF WO#: 23F1268
Preparation
Dateffime
6/19/23
6/19/23
6/15/23
6/15/23
6/15/23
6/15/23
Lab ID: 23F1268-05
Analysis
Date/Time
6/19/23
6/19/23
6/15/23
6/15/23
6/l 5/23
6/15/23
Flag(s)
Page 7 of 32
Chemtech-Ford Laboratories 9632 South 500 West
Sandy, UT 84070
0:[phone] F: [phone]
www.ChemtechFord.com
Serving the lntermountain West Since 1953
CHEMTECH-FORD
C.AbORATQRIE:S
Energy Fuels Resources, Inc.
Tanner Holliday
6425 South Highway 191
Blanding, UT 84511
Sample ID: TW4-22_06132023
Matrix: Water
Date Sampled: 6/13/23 8:03
Inorganic
Chloride
Nitrate+ Nitrite, Total, as N
Volatile Organic Compounds
Carbon Tetrachloride
Chloroform
Chloromethane
Methylene Chloride
Result
596
49.8
< 1.0
2180
3.3
2.1
Proiect Name: 2nd Quarter Chlorform 2023
www.ChemtechFord.com
Units
mg/L
mg/L
ug/L
ug/L
ug/L
ug/L
Certificate of Analysis
Minimum
Reporting
Limit
10.0
1.00
1.0
100
1.0
1.0
PO#:
Receipt: 6/15/23 10:55@ -2.3 °C
Date Reported: 6/28/2023
Project Name: 2nd Quarter Chlorform 2023
Sampled By: Tanner Holliday
Method
EPA300.0
EPA353.2
EPA 8260D /5030A
EPA 8260D /5030A
EPA 8260D /5030A
EPA 8260D /5030A
CtF WO#: 23F1268
Preparation
Date/Time
6/19/23
6/19/23
6/15/23
6/15/23
6/15/23
6/15/23
Lab ID: 23F1268-13
Analysis
Date/Time
6/19/23
6/19/23
6/15/23
6/15/23
6/15/23
6/15/23
Flag(s)
Page 15 of 32
I Chemtech-Ford Laboratories 9632 South 500 West
Sandy, UT 84070
0 :[phone] F: [phone]
www.ChemtechFord.com
Serving the lntermountain West Since 1953
CHEMTECH-FORD
~ABOMATORIES
Energy Fuels Resources, Inc.
Tanner Holliday
6425 South Highway 191
Blanding, UT 84511
Sample ID: TW4-23_06202023
Matrix: Water
Date Sampled: 6/20/23 7:11
lnorg;anic
Chloride
Nitrate + Nitrite, Total, as N
\"olatilc Or~anic Compounds
Carbon Tetrachloride
Chloroform
Chloromethane
Methylene Chloride
51.3
<0.100
< 1.0
< 1.0
< 1.0
< 1.0
Proiect Name: 2nd Quarter Chloroform 2023
www.ChemtechFord.com
Units
mg/L
mg/L
ug/L
ug/L
ug/L
ug/L
Certificate of Analysis
Minimum
Reporting
Limit
1.00
0.100
1.0
1.0
1.0
1.0
PO#:
Receipt: 6/22/23 13:30@ -2.2 ·c
Date Reported: 6/30/2023
Project Name: 2nd Quarter Chloroform 2023
Sampled By: Tanner Holliday
EPA300.0
EPA353.2
EPA 8260D /5030A
EPA 8260D /5030A
EPA 8260D /5030A
EPA 8260D /5030A
CtF WO#: 23F1815
Preparation
Date/Time
6/26/23
6/26/23
6/26/23
6/26/23
6/26/23
6/26/23
Lab ID: 23Fl815-02
Analysis
Date/Time
6/26/23
6/26/23
6/26/23
6/26/23
6/26/23
6/26/23
Flag(s)
Page 4 of 34
Chemtech-Ford Laboratories 9632 South 500 West
Sandy, UT 84070
0:[phone] F: [phone]
www.ChemtechFord.com
Serving the lntermountain West Since 1953
CHEMTECH-FORD
C.ABORATORIES
Energy Fuels Resources, Inc.
Tanner Holliday
6425 South Highway 191
Blanding, UT 84511
Sample ID: TW4-24_06132023
Matrix: Water
Date Sampled: 6/13/23 7:55
Inorganic
Chloride
Nitrate+ Nitrite, Total, as N
Volatile Organic Compounds
Carbon Tetrachloride
Chloroform
Chloromethane
Methylene Chloride
Result
866
35.9
< 1.0
58.5
< 1.0
< 1.0
Project Name: 2nd Quarter Chlorform 2023
www.ChemtechFord.com
Units
mg/L
mg/L
ug/L
ug/L
ug/L
ug/L
Certificate of Analysis
Minimum
Reporting
Limit
20.0
1.00
1.0
1.0
1.0
1.0
PO#:
Receipt: 6/15/23 10:55 @ -2.3 ·c
Date Reported: 6/28/2023
Project Name: 2nd Quarter Chlorform 2023
Sampled By: Tanner Holliday
Method
EPA300.0
EPA353.2
EPA 8260D /5030A
EPA 8260D /5030A
EPA 8260D /5030A
EPA 8260D /5030A
CtF WO#: 23F1268
Preparation
Date/Time
6/19/23
6/19/23
6/15/23
6/15/23
6/15/23
6/15/23
Lab ID: 23Fl268-02
Analysis
Date/Time
6/19/23
6/19/23
6/15/23
6/15/23
6/15/23
6/15/23
~
Page 4 of 32
Chemtech-Ford Laboratories 9632 South 500 West
Sandy, UT 84070
0:[phone] F: [phone]
www.ChemtechFord.com
Serving the lntermountain West Since 1953
CHEMTECH-FORD
!..ABO.AATORIES
Energy Fuels Resources, Inc.
Tanner Holliday
6425 South Highway 191
Blanding, UT 84511
Sample ID: TW4-25_06132023
Matrix: Water
Date Sampled: 6/13/23 7:45
lnorgank
Chloride
Nitrate + Nitrite, Total, as N
\olatilc Organic Compounds
Carbon Tetrachloride
Chloroform
Chloromethane
Methylene Chloride
Result
73.0
1.03
< 1.0
< 1.0
< 1.0
< 1.0
Proiect Name: 2nd Quarter Chlorform 2023
www.ChemtechFord.com
mg/L
mg/L
ug/L
ug/L
ug/L
ug/L
Certificate of Analysis
Minimum
Reporting
Limit
1.00
0.100
1.0
1.0
1.0
1.0
PO#:
Receipt: 6/15/23 10:55 @ -2.3 °C
Date Reported: 6/28/2023
Project Name: 2nd Quarter Chlorform 2023
Sampled By: Tanner Holliday
Method
EPA300.0
EPA353.2
EPA 8260D /5030A
EPA 8260D /5030A
EPA 8260D /5030A
EPA 8260D /5030A
CtF WO#: 23F1268
Preparation
Date/Time
6119/23
6/1 9/23
6/15/23
6/1 5/23
6/15/23
6/15/23
Lab ID: 23F1268-01
Analysis
Date/Time
6/19/23
6/19/23
6/15/23
6/15/23
6/15/23
6/15/23
Page 3 of 32
I Chemtech-Ford Laboratories 9632 South 500 West
Sandy, UT 84070
0:[phone] F: [phone]
www.ChemtechFord.com
Serving the lntermountain West Since 1953
CHEMTECH-FORD
~AbORATORIES
Energy Fuels Resources, Inc.
Tanner Holliday
6425 South Highway 191
Blanding, UT 84511
Sample ID: TW4-26_06212023
Matrix: Water
Date Sampled: 6/21/23 9:01
Inorganic
Chloride
Nitrate+ Nitrite, Total, as N
Volatile Organic Compounds
Carbon Tetrachloride
Chloroform
Chloromethane
Methylene Chloride
33.5
10.0
< 1.0
659
< 1.0
< 1.0
Proiect Name: 2nd Quarter Chloroform 2023
www.ChemtechFord.com
mg/L
mg/L
ug/L
ug/L
ug/L
ug/L
Certificate of Analysis
Minimum
Reporting
Limit
1.00
0.500
1.0
50.0
1.0
1.0
PO#:
Receipt: 6/22/23 13:30@ -2.2 °C
Date Reported: 6/30/2023
Project Name: 2nd Quarter Chloroform 2023
Sampled By: Tanner Holliday
Method
EPA300.0
EPA353.2
EPA 8260D /5030A
EPA 8260D /5030A
EPA 8260D /5030A
EPA 8260D /5030A
CtF WO#: 23F1815
Preparation
Date/Time
6/26/23
6/27/23
6/26/23
6/26/23
6/26/23
6/26/23
Lab ID: 23Fl815-19
Analysis
Date/Time
6/27/23
6/27/23
6/26/23
6/26/23
6/26/23
6/26/23
Page 21 of 34
I Chemtech-Ford Laboratories 9632 South 500 West
Sandy, UT 84070
0:[phone] F: [phone]
www.ChemtechFord.com
Serving the lntermountain West Since 1953
CHEMTECH-FORD
LABOP.ATORIES
Energy Fuels Resources, Inc.
Tanner Holliday
6425 South Highway 191
Blanding, UT 84511
Sample ID: TW4-27 _06212023
Matrix: Water
Date Sampled: 6/21/23 7:04
Inorganic
Chloride
Nitrate+ Nitrite, Total, as N
\ olatill' Oq:anic Compounds
Carbon Tetrachloride
Chloroform
Chloromethane
Methylene Chloride
25.7
16.9
< 1.0
2.5
< 1.0
< 1.0
Project Name: 2nd Quarter Chloroform 2023
www.ChemtechFord.com
Units
mg/L
mg/L
ug/L
ug/L
ug/L
ug/L
Certificate of Analysis
Minimum
Reporting
Limit
1.00
0.500
1.0
1.0
1.0
1.0
PO#:
Receipt: 6/22/23 13:30@ -2.2 ·c
Date Reported: 6/30/2023
Project Name: 2nd Quarter Chloroform 2023
Sampled By: Tanner Holliday
Method
EPA300.0
EPA353.2
EPA 8260D /5030A
EPA 8260D /5030A
EPA 8260D /5030A
EPA 8260D /5030A
CtF WO#: 23F1815
Preparation
Date/Time
6/26/23
6/26/23
6/26/23
6/26/23
6/26/23
6/26/23
Lab ID: 23F1815-08
Analysis
Date/Time
6/27/23
6/26/23
6/26/23
6/26/23
6/26/23
6/26/23
Page 10 of 34
I Chemtech-Ford Laboratories 9632 South 500 West
Sandy, UT 84070
0:[phone] F: [phone]
www.ChemtechFord.com
Serving the lnterrnountain West Since 1953
CHEMTECH-FORD
LABOF!ATORIE:S
Energy Fuels Resources, Inc.
Tanner Holliday
6425 South Highway 191
Blanding, UT 84511
Sample ID: TW4-28_06152023
Matrix: Water
Date Sampled: 6/15/23 6:54
Inorganic
Chloride
Nitrate+ Nitrite, Total, as N
\ol:ilile Oq,:anic Compounds
Carbon Tetrachloride
Chloroform
Chloromethane
Methylene Chloride
Result
51.3
11.9
< 1.0
< 1.0
< 1.0
< 1.0
Project Name: 2nd Quarter Chloroform 2023
www.ChemtechFord.com
Units
mg/L
mg/L
ug/L
ug/L
ug/L
ug/L
Certificate of Analysis
Minimum
Reporting
Limit
1.00
0.500
1.0
1.0
1.0
1.0
PO#:
Receipt: 6/16/23 10:50@ 1.3 ·c
Date Reported: 6/28/2023
Project Name: 2nd Quarter Chloroform 2023
Sampled By: Tanner Holliday
EPA300.0
EPA353.2
EPA 8260D /5030A
EPA 8260D /5030A
EPA 8260D /5030A
EPA 8260D /5030A
CtF WO#: 23F1372
Preparation
Date/Time
6/20/23
6/19/23
6/16/23
6/16/23
6/16/23
6/16/23
Lab ID: 23Fl372-04
Analysis
Date/Time
6/20/23
6/19/23
6/16/23
6/16/23
6/16/23
6/16/23
Page 6 of 24
Chemtech-Ford Laboratories 9632 South 500 West
Sandy, UT 84070
0 :[phone] F: [phone]
www.ChemtechFord.com
Serving the lntermountain West Since 1953
CHEMTECH-FORO
LABORATORIES
Energy Fuels Resources, Inc.
Tanner Holliday
6425 South Highway 191
Blanding, UT 84511
Sample ID: TW4-29_06212023
Certificate of Analysis
PO#:
Receipt: 6/22/23 13:30@ -2.2 ·c
Date Reported: 6/30/2023
Project Name: 2nd Quarter Chloroform 2023
Matrix: Water Lab ID: 23F1815-17
Date Sampled: 6/21/23 8:40 Sampled By: Tanner Holliday
lnori.:anic
Chloride
Nitrate+ Nitrite, Total, as N
\'olatil<' Organic Compounds
Carbon Tetrachloride
Chlorofonn
Chloromethane
Methylene Chloride
42.2
2.65
< 1.0
490
< 1.0
< 1.0
Proiect Name: 2nd Quarter Chloroform 2023
www.ChemtechFord.com
Units
mg/L
mg/L
ug/L
ug/L
ug/L
ug/L
Minimum
Reporting Preparation
Limit
1.00
0.100
1.0
50.0
1.0
1.0
Method
EPA300.0
EPA353.2
EPA 82600 /5030A
EPA 82600 /5030A
EPA 82600 /5030A
EPA 82600 /5030A
CtF WO#: 23F1815
Date/Time
6/26/23
6/27/23
6/26/23
6/26/23
6/26/23
6/26/23
Analysis
Date/Time
6/27/23
6/27/23
6/26/23
6/26/23
6/26/23
6/26/23
Flag(s)
Page 19 of 34
I Chemtech-Ford Laboratories 9632 South 500 West
Sandy, UT 84070
0:[phone] F: [phone]
www.ChemtechFord.com
Serving the lntermountain West Since 1953
CHEMTECH-FORD lABORAfORIE.S
Energy Fuels Resources, Inc.
Tanner Holliday
6425 South Highway 191
Blanding, UT 84511
Sample ID: TW4-30_06212023
Matrix: Water
Date Sampled: 6/21/23 7:41
Inorganic
Chloride
Nitrate+ Nitrite, Total, as N
\ olatilc Organic Compounds
Carbon Tetrachloride
Chloroform
Chloromethane
Methylene Chloride
Result
36.8
3.02
< 1.0
47.0
< 1.0
< 1.0
Proiect Name: 2nd Quarter Chloroform 2023
www.ChemtechFord.com
Units
mg/L
mg/L
ug/L
ug/L
ug/L
ug/L
Certificate of Analysis
Minimum
Reporting
Limit
1.00
0.100
1.0
1.0
1.0
1.0
PO#:
Receipt: 6/22/23 13:30@ -2.2 "C
Date Reported: 6/30/2023
Project Name: 2nd Quarter Chloroform 2023
Sampled By: Tanner Holliday
Method
EPA300.0
EPA353.2
EPA 8260D /5030A
EPA 8260D /5030A
EPA 8260D /5030A
EPA 8260D /5030A
CtF WO#: 23F1815
Preparation
Date/Time
6/26/23
6/26/23
6/26/23
6/26/23
6/26/23
6/26/23
Lab ID: 23F1815-12
Analysis
Date/Time
6/27/23
6/26/23
6/26/23
6/26/23
6/26/23
6/26/23
Page 14 of 34
Chemtech-Ford Laboratories 9632 South 500 West
Sandy, UT 84070
0:[phone] F: [phone]
www.ChemtechFord.com
Serving the lntermountain West Since 1953
CHEMTECH-FORD
~A80ilAT0RIE:5
Energy Fuels Resources, Inc.
Tanner Holliday
6425 South Highway 191
Blanding, UT 84511
Sample ID: TW4-31_06152023
Matrix: Water
Date Sampled: 6/15/23 8:05
Inorganic
Chloride
Nitrate + Nitrite, Total, as N
Volatile Organic Compounds
Carbon Tetrachloride
Chloroform
Chloromethane
Methylene Chloride
Result
43.1
0.444
< 1.0
< 1.0
< 1.0
< 1.0
Project Name: 2nd Quarter Chloroform 2023
www.ChemtechFord.com
Units
mg/L
mg/L
ug/L
ug/L
ug/L
ug/L
Certificate of Analysis
Minimum
Reporting
Limit
1.00
0.100
1.0
1.0
1.0
1.0
PO#:
Receipt: 6/16/23 10:50@ 1.3 ·c
Date Reported: 6/28/2023
Project Name: 2nd Quarter Chloroform 2023
Sampled By: Tanner Holliday
Method
EPA300.0
EPA353.2
EPA 82600 /5030A
EPA 82600 /5030A
EPA 82600 /5030A
EPA 82600 /5030A
CtF WO#: 23F1372
Preparation
Date/Time
6/20/23
6/19/23
6/l 7/23
6/17/23
6/17/23
6/17/23
Lab ID: 23F1372-09
Analysis
Date/Time
6/20/23
6/19/23
6/17/23
6/17/23
6/17/23
6/17/23
fuJ:.W.
Page 11 of 24
I Chemtech-Ford Laboratories 9632 South 500 West
Sandy, UT 84070
0:[phone] F: [phone]
www.ChemtechFord.com
Serving the lntermountain West Since 1953
CHEMTECH·FORD
!..ABOf1AfORIES
Energy Fuels Resources, Inc.
Tanner Holliday
6425 South Highway 191
Blanding, UT 84511
Sample ID: TW4-32_06152023
Matrix: Water
Date Sampled: 6/15/23 7:00
Inorganic
Chloride
Nitrate+ Nitrite, Total, as N
\ olalilc Organic Compounds
Carbon Tetrachloride
Chloroform
Chloromethane
Methylene Chloride
Result
49.3
1.77
< 1.0
< 1.0
< 1.0
< 1.0
Proiect Name: 2nd Quarter Chloroform 2023
www.ChemtechFord.com
Units
mg/L
mg/L
ug/L
ug/L
ug/L
ug/L
Certificate of Analysis
Minimum
Reporting
Limit
1.00
0.100
1.0
1.0
1.0
1.0
PO#:
Receipt: 6/16/23 10:50 @ 1.3 ·c
Date Reported: 6/28/2023
Project Name: 2nd Quarter Chloroform 2023
Sampled By: Tanner Holliday
EPA300.0
EPA353.2
EPA 8260D /5030A
EPA 8260D /5030A
EPA 8260D /5030A
EPA 8260D /5030A
CtF WO#: 23F1372
Preparation
Date/Time
6/20/23
6/19/23
6/16/23
6/16/23
6/16/23
6/16/23
Lab ID: 23F1372-05
Analysis
Date/Time
6/20/23
6/19/23
6/16/23
6/16/23
6/16/23
6/16/23
Page 7 of 24
I Chemtech-Ford Laboratories 9632 South 500 West
Sandy, UT 84070
0:[phone] F: [phone]
www.ChemtechFord.com
Serving the lntermountain West Since 1953
CHEMTECH-FORD
LABORATORIES
Energy Fuels Resources, Inc.
Tanner Holliday
6425 South Highway 191
Blanding, UT 84511
Sample ID: TW4-33_06212023
Matrix: Water
Date Sampled: 6/21/23 7:50
Inorganic
Chloride
Nitrate+ Nitrite, Total, as N
Volatile Organic Compounds
Carbon Tetrachloride
Chloroform
Chloromethane
Methylene Chloride
Result
52.9
4.24
< 1.0
51.8
< 1.0
< 1.0
Proiect Name: 2nd Quarter Chloroform 2023
www.ChemtechFord.com
Units
mg/L
mg/L
ug/L
ug/L
ug/L
ug/L
Certificate of Analysis
Minimum
Reporting
Limit
1.00
0.100
1.0
1.0
1.0
1.0
PO#:
Receipt: 6/22/23 13:30 @ -2.2 °C
Date Reported: 6/30/2023
Project Name: 2nd Quarter Chloroform 2023
Sampled By: Tanner Holliday
EPA300.0
EPA353.2
EPA 8260D /5030A
EPA 8260D /5030A
EPA 8260D /5030A
EPA 8260D /5030A
CtF WO#: 23F1815
Preparation
Date/Time
6/26/23
6/26/23
6/26/23
6/26/23
6/26/23
6/26/23
Lab ID: 23Fl815-13
Analysis
Date/Time
6/27/23
6/26/23
6/26/23
6/26/23
6/26/23
6/26/23
Flag(s)
Page 15 of 34
I Chemtech-Ford Laboratories 9632 South 500 West
Sandy, UT 84070
0 :[phone] F: [phone]
www.ChemtechFord.com
Serving the lntermountain West Since 1953
CHEMTECH-FORD
~AEIOJIATORIES
Energy Fuels Resources, Inc.
Tanner Holliday
6425 South Highway 191
Blanding, UT 84511
Sample ID: TW4-34_06202023
Certificate of Analysis
PO#:
Receipt: 6/22/23 13:30 @ -2.2 "C
Date Reported: 6/30/2023
Project Name: 2nd Quarter Chloroform 2023
Matrix: Water Lab ID: 23F1815-05
Date Sampled: 6/20/23 7:35 Sampled By: Tanner Holliday
Inorganic
Chloride
Nitrate+ Nitrite, Total, as N
\ olatilc Organic Compounds
Carbon Tetrachloride
Chloroform
Chloromethane
Methylene Chloride
21.2
1.09
< 1.0
1.2
< 1.0
< l.0
Proiect Name: 2nd Quarter Chloroform 2023
www.ChemtechFord.com
Units
mg/L
mg/L
ug/L
ug/L
ug/L
ug/L
Minimum
Reporting Preparation
1.00
0.100
1.0
1.0
1.0
1.0
Method
EPA300.0
EPA353.2
EPA 82600 /5030A
EPA 82600 /5030A
EPA 82600 /5030A
EPA 82600 /5030A
CtF WO#: 23F1815
Date/Time
6/26/23
6/26/23
6/26/23
6/26/23
6/26/23
6/26/23
Analysis
Date/Time
6/27/23
6/26/23
6/26/23
6/26/23
6/26/23
6/26/23
fuJilll
Page 7 of 34
I Chemtech-F ord Laboratories 9632 South 500 West
Sandy, UT 84070
0:[phone] F: [phone]
www. Chem tech Ford.com
Serving the lntermountain West Since 1953
CHEMTECH-FORO
LABOftATOftlES
Energy Fuels Resources, Inc.
Tanner Holliday
6425 South Highway 191
Blanding, UT 84511
Sample ID: TW4-35_06202023
Matrix: Water
Date Sampled: 6/20/23 7:01
Inorganic
Chloride
Nitrate+ Nitrite, Total, as N
\ olalile Organic Compounds
Carbon Tetrachloride
Chloroform
Chloromethane
Methylene Chloride
Result
29.8
1.91
< 1.0
< 1.0
< 1.0
< 1.0
Project Name: 2nd Quarter Chloroform 2023
www.ChemtechFord.com
Units
mg/L
mg/L
ug/L
ug/L
ug/L
ug/L
Certificate of Analysis
Minimum
Reporting
Limit
1.00
0.100
1.0
1.0
1.0
1.0
PO#:
Receipt: 6/22/23 13 :30 @ -2.2 °C
Date Reported: 6/30/2023
Project Name: 2nd Quarter Chloroform 2023
Sampled By: Tanner Holliday
Method
EPA300.0
EPA353.2
EPA 8260D /5030A
EPA 8260D /5030A
EPA 8260D /5030A
EPA 8260D /5030A
CtF WO#: 23F1815
Preparation
Date/Time
6/26/23
6/26/23
6/26/23
6/26/23
6/26/23
6/26/23
Lab ID: 23Fl815-01
Analysis
Date/Time
6/26/23
6/26/23
6/26/23
6/26/23
6/26/23
6/26/23
fugW_
Page 3 of 34
I Chemtech-Ford Laboratories 9632 South 500 West
Sandy, UT 84070
0:[phone] F: [phone]
www.ChemtechFord.com
Serving the lntermountain West Since 1953
CHEMTECH-FORD
~ABORATO~IES
Energy Fuels Resources, Inc.
Tanner Holliday
6425 South Highway 191
Blanding, UT 84511
Sample ID: TW4-36_06152023
Matrix: Water
Date Sampled: 6/15/23 7:55
Inorganic
Chloride
Nitrate+ Nitrite, Total, as N
Volatile Organic Compounds
Carbon Tetrachloride
Chloroform
Chlorornethane
Methylene Chloride
Result
68.9
<0.100
< 1.0
< 1.0
< 1.0
< 1.0
Proiect Name: 2nd Quarter Chloroform 2023
www.ChemtechFord.com
Units
rng/L
mg/L
ug/L
ug/L
ug/L
ug/L
Certificate of Analysis
Minimum
Reporting
Limit
1.00
0.100
1.0
1.0
1.0
1.0
PO#:
Receipt: 6/16/23 10:50@ 1.3 ·c
Date Reported: 6/28/2023
Project Name: 2nd Quarter Chloroform 2023
Sampled By: Tanner Holliday
EPA300.0
EPA353.2
EPA 8260D /5030A
EPA 8260D /5030A
EPA 8260D 15030A
EPA 8260D /5030A
CtF WO#: 23F1372
Preparation
Date/Time
6/20/23
6/19/23
6/16/23
6/16/23
6/16/23
6/16/23
Lab ID: 23F1372-08
Analysis
Date/Time
6/20/23
6/19/23
6/16/23
6/16/23
6/16/23
6/16/23
Flag(s)
Page 10 of 24
Chemtech-Ford Laboratories 9632 South 500 West
Sandy, UT 84070
0 :[phone] F: [phone]
www.ChemtechFord.com
Serving the lntermountain West Since 1953
CHEMTECH·FORD
:.ABOl-tATORIES
Energy Fuels Resources, Inc.
Tanner Holliday
6425 South Highway 191
Blanding, UT 84511
Sample ID: TW4-37_06132023
Matrix: Water
Date Sampled: 6/13/23 9:05
lno1·gank
Chloride
Nitrate+ Nitrite, Total, as N
\"olalik (hganic Compounds
Carbon Tetrachloride
Chloroform
Chloromethane
Methylene Chloride
Result
329
35.9
1.6
8160
5.7
< 1.0
Project Name: 2nd Quarter Chlorform 2023
www.ChemtechFord.com
Units
mg/L
mg/L
ug/L
ug/L
ug/L
ug/L
Certificate of Analysis
Minimum
Reporting
Limit
10.0
1.00
1.0
100
1.0
1.0
PO#:
Receipt: 6/15/23 10:55@ -2.3 ·c
Date Reported: 6/28/2023
Project Name: 2nd Quarter Chlorform 2023
Sampled By: Tanner Holliday
EPA300.0
EPA353.2
EPA 8260D /5030A
EPA 8260D /5030A
EPA 8260D /5030A
EPA 8260D /5030A
CtF WO#: 23F1268
Preparation
Date/Time
6/19/23
6/19/23
6/15/23
6/15/23
6/15/23
6/15/23
Lab ID: 23F1268-15
Analysis
Date/Time
6/20/23
6/19/23
6/15/23
6/15/23
6/15/23
6/15/23
Flag(s)
Page 17 of 32
Chemtech-Ford Laboratories 9632 South 500 West
Sandy, UT 84070
0 :[phone] F: [phone]
www.ChemtechFord.com
Serving the lntermountain West Since 1953
CHEMTECH-FORD
lAB0kATORIES
Energy Fuels Resources, Inc.
Tanner Holliday
6425 South Highway 191
Blanding, UT 84511
Sample ID: TW4-38_06202023
Matrix: Water
Date Sampled: 6/20/23 7:20
Inorganic
Chloride
Nitrate+ Nitrite, Total, as N
\ olatilc Organic Compounds
Carbon Tetrachloride
Chloroform
Chloromethane
Methylene Chloride
36.3
8.20
< 1.0
< 1.0
< 1.0
< 1.0
Project Name: 2nd Quarter Chloroform 2023
www.ChemtechFord.com
Units
mg/L
mg/L
ug/L
ug/L
ug/L
ug/L
Certificate of Analysis
Minimum
Reporting
Limit
1.00
0.500
1.0
1.0
1.0
1.0
PO#:
Receipt: 6/22/23 13:30 @ -2.2 ·c
Date Reported: 6/30/2023
Project Name: 2nd Quarter Chloroform 2023
Sampled By: Tanner Holliday
EPA300.0
EPA353.2
EPA 8260D /5030A
EPA 8260D /5030A
EPA 8260D /5030A
EPA 8260D /5030A
CtF WO#: 23F1815
Preparation
Date/Time
6/26/23
6/26/23
6/26/23
6/26/23
6/26/23
6/26/23
Lab ID: 23F1815-03
Analysis
Date/Time
6/27/23
6/26/23
6/26/23
6/26/23
6/26/23
6/26/23
~
Page 5 of 34
Chemtech-Ford Laboratories 9632 South 500 West
Sandy, UT 84070
0:[phone] F: [phone]
www.ChemtechFord.com
Serving the lntermountain West Since 1953
CHEMTECH-FORD
:..ABO!l!ATORICS
Energy Fuels Resources, Inc.
Tanner Holliday
6425 South Highway 191
Blanding, UT 84511
Sample ID: TW4-39_06132023
Matrix: Water
Date Sampled: 6/13/23 9:30
Inorganic
Chloride
Nitrate+ Nitrite, Total, as N
\olatilc Organic Compounds
Carbon Tetrachloride
Chloroform
Chloromethane
Methylene Chloride
Result
75.4
7.96
l.8
3330
3.1
< l.0
Proiect Name: 2nd Quarter Chlorform 2023
www.ChemtechFord.com
Units
mg/L
mg/L
ug/L
ug/L
ug/L
ug/L
Certificate of Analysis
Minimum
Reporting
Limit
1.00
0.200
l.0
100
l.0
1.0
PO#:
Receipt: 6/15/23 10:55 @ -2.3 ·c
Date Reported: 6/28/2023
Project Name: 2nd Quarter Chlorform 2023
Sampled By: Tanner Holliday
EPA300.0
EPA353.2
EPA 8260D /5030A
EPA 8260D /5030A
EPA 8260D /5030A
EPA 8260D /5030A
CtF WO#: 23F1268
Preparation
Date/Time
6/19/23
6/19/23
6/15/23
6/15/23
6/15/23
6/15/23
Lab ID: 23F1268-12
Analysis
Date/Time
6/19/23
6/19/23
6/15/23
6/15/23
6/15/23
6/15/23
E!illilll
Page 14 of 32
Chemtech-Ford Laboratories 9632 South 500 West
Sandy, UT 84070
0 :[phone] F: [phone]
www.ChemtechFord.com
Serving the lntermountain West Since 1953
CHEMTECH-FORD
~ABOflATCRIE.S
Energy Fuels Resources, Inc.
Tanner Holliday
6425 South Highway 191
Blanding, UT 84511
Sample ID: TW4-40_06132023
Matrix: Water
Date Sampled: 6/13/23 10:35
lnoq~anic
Chloride
Nitrate+ Nitrite, Total, as N
\ olatilc Organic Compounds
Carbon Tetrachloride
Chloroform
Chloromethane
Methylene Chloride
37.6
2.04
< 1.0
220
1.3
< 1.0
Proiect Name: 2nd Quarter Chlorform 2023
www.ChemtechFord.com
Units
mg/L
mg/L
ug/L
ug/L
ug/L
ug/L
Certificate of Analysis
Minimum
Reporting
Limit
1.00
0.100
1.0
10.0
1.0
1.0
PO#:
Receipt: 6/15/23 10:55 @ -2.3 ·c
Date Reported: 6/28/2023
Project Name: 2nd Quarter Chlorform 2023
Sampled By: Tanner Holliday
Method
EPA300.0
EPA353.2
EPA 8260D /5030A
EPA 8260D /5030A
EPA 8260D /5030A
EPA 8260D /5030A
CtF WO#: 23F1268
Preparation
Dateffime
6119/23
6119/23
6/16/23
6/16/23
6/16/23
6/16/23
Lab ID: 23Fl268-04
Analysis
Date/Time
6/19/23
6/19/23
6/16/23
6/16/23
6/16/23
6/16/23
Page 6 of 32
I Chemtech-Ford Laboratories 9632 South 500 West
Sandy, UT 84070
0:[phone] F: [phone]
www.ChemtechFord.com
Serving the lntermountain West Since 1953
CHEMTECH-FORD
;.,_._Oll)AlORll.[li
Energy Fuels Resources, Inc.
Tanner Holliday
6425 South Highway 191
Blanding, UT 84511
Sample ID: TW4-41_06132023
Matrix: Water
Date Sampled: 6/13/23 10:18
Inorganic
Chloride
Nitrate + Nitrite, Total, as N
Volatile Organic Compounds
Carbon Tetrachloride
Chloroform
Chloromethane
Methylene Chloride
Result
40.3
6.27
< 1.0
1040
1.8
< 1.0
Proiect Name: 2nd Quarter Chlorform 2023
www.ChemtechFord.com
Units
mg/L
mg/L
ug/L
ug/L
ug/L
ug/L
Certificate of Analysis
Minimum
Reporting
Limit
1.00
0.200
1.0
100
1.0
1.0
PO#:
Receipt: 6/15/23 10:55@ -2.3 ·c
Date Reported: 6/28/2023
Project Name: 2nd Quarter Chlorform 2023
Sampled By: Tanner Holliday
Method
EPA300.0
EPA353.2
EPA 8260D /5030A
EPA 8260D /5030A
EPA 8260D /5030A
EPA 8260D /5030A
CtF WO#: 23F1268
Preparation
Date/Time
6/19/23
6/19/23
6/15/23
6/15/23
6/15/23
6/15/23
Lab ID: 23F1268-10
Analysis
Date/Time
6/19/23
6/19/23
6/15/23
6/15/23
6/15/23
6/15/23
Flag(s)
Page 12 of 32
I Chemtech-Ford Laboratories 9632 South 500 West
Sandy, UT 84070
0 :[phone] F: [phone]
www.ChemtechFord.com
Serving the lntermountain West Since 1953
CHEMTECH-FORD
~AB0P.ATORIES
Energy Fuels Resources, Inc.
Tanner Holliday
6425 South Highway 191
Blanding, UT 84511
Sample ID: TW4-42_06152023
Matrix: Water
Certificate of Analysis
PO#:
Receipt: 6/16/23 10:50 @ 1.3 ·c
Date Reported: 6/28/2023
Project Name: 2nd Quarter Chloroform 2023
Date Sampled: 6/15/23 6:33 Sampled By: Tanner Holliday
Inorganic
Chloride
Nitrate+ Nitrite, Total, as N
\'olatilc Or~anic Compounds
Carbon Tetrachloride
Chloroform
Chloromethane
Methylene Chloride
20.9
3.14
< 1.0
< 1.0
< 1.0
< 1.0
Proiect Name: 2nd Quarter Chloroform 2023
www.ChemtechFord.com
Units
mg/L
mg/L
ug/L
ug/L
ug/L
ug/L
Minimum
Reporting Preparation
1.00
O.l00
1.0
l.O
1.0
1.0
EPA300.0
EPA 353.2
EPA 8260D /5030A
EPA 8260D /5030A
EPA 8260D /5030A
EPA 8260D /5030A
CtF WO#: 23F1372
Date/Time
6/19/23
6/19/23
6/16/23
6/16/23
6/16/23
6/16/23
Lab ID: 23Fl372-02
Analysis
Date/Time
6/20/23
6/19/23
6/16/23
6/16/23
6/16/23
6/16/23
Page 4 of 24
Chemtech-Ford Laboratories 9632 South 500 West
Sandy, UT 84070
0:[phone] F: [phone]
www.ChemtechFord.com
Serving the lntermountain West Since 1953
CHEMTECH-FORD
:..ABOP.ATOR!l:S
Energy Fuels Resources, Inc.
Tanner Holliday
6425 South Highway 191
Blanding, UT 84511
Sample ID: TW4-43_06152023
Matrix: Water
Date Sampled: 6/15/23 8:13
Inorganic
Chloride
Nitrate+ Nitrite, Total, as N
Volatile Organic Compounds
Carbon Tetrachloride
Chloroform
Chloromethane
Methylene Chloride
41.7
0.432
< 1.0
< 1.0
< 1.0
< 1.0
Proiect Name: 2nd Quarter Chloroform 2023
www.ChemtechFord.com
mg/L
mg/L
ug/L
ug/L
ug/L
ug/L
Certificate of Analysis
Minimum
Reporting
Limit
1.00
0.100
1.0
1.0
1.0
1.0
PO#:
Receipt: 6/16/23 10:50@ 1.3 ·c
Date Reported: 6/28/2023
Project Name: 2nd Quarter Chloroform 2023
Sampled By: Tanner Holliday
Method
EPA300.0
EPA353.2
EPA 8260D /5030A
EPA 8260D /5030A
EPA 8260D /5030A
EPA 8260D /5030A
CtF WO#: 23F1372
Preparation
Date/Time
6/20/23
6/19/23
6/19/23
6/19/23
6/19/23
6/19/23
Lab ID: 23F1372-10
Analysis
Date/Time
6/20/23
6/19/23
6/19/23
6/19/23
6/19/23
6/19/23
J-LOW-L
Page 12 of 24
Chemtech-Ford Laboratories 9632 South 500 West
Sandy, UT 84070
0 :[phone] F: [phone]
www.ChemtechFord.com
Serving the lntermountain West Since 1953
CHEMTECH-FORD
iABOJIATORIES
Energy Fuels Resources, Inc.
Tanner Holliday
6425 South Highway 191
Blanding, UT 84511
Sample ID: TW4-60_06132023
Matrix: Water
Date Sampled: 6/13/23 13:00
Inorganic
Chloride
Nitrate+ Nitrite, Total, as N
\'olatik Or·ganic Compounds
Carbon Tetrachloride
Chloroform
Chloromethane
Methylene Chloride
< 1.00
<0.100
< 1.0
2.2
< 1.0
< 1.0
Project Name: 2nd Quarter Chlorform 2023
www.ChemtechFord.com
Units
mg/L
mg/L
ug/L
ug/L
ug/L
ug/L
Certificate of Analysis
Minimum
Reporting
Limit
1.00
0.100
1.0
1.0
1.0
1.0
PO#:
Receipt: 6/15/23 10:55@ -2.3 "C
Date Reported: 6/28/2023
Project Name: 2nd Quarter Chlorform 2023
Sampled By: Tanner Holliday
Method
EPA300.0
EPA353.2
EPA 82600 /5030A
EPA 82600 /5030A
EPA 82600 /5030A
EPA 82600 /5030A
CtF WO#: 23F1268
Preparation
Date/Time
6/19/23
6/19/23
6/16/23
6/16/23
6/J 6/23
6/16/23
Lab ID: 23Fl268-16
Analysis
Date/Time
6/20/23
6/19/23
6/J 6/23
6/1 6/23
6/J 6/23
6/16/23
Flag(s)
Page 18 of 32
I Chemtech-Ford Laboratories 9632 South 500 West
Sandy, UT 84070
0:[phone] F: [phone]
www.ChemtechFord.com
Serving the lntermountain West Since 1953
CH EMTECH-FORD
lABORATORIES.
Energy Fuels Resources, Inc.
Tanner Holliday
6425 South Highway 191
Blanding, UT 84511
Sample ID: TW4-65_06152023
Matrix: Water
Date Sampled: 6/15/23 6:33
Inorganic
Chloride
Nitrate+ Nitrite, Total, as N
Volatile Organic Compounds
Carbon Tetrachloride
Chloroform
Chloromethane
Methylene Chloride
22.7
3.20
< 1.0
< 1.0
< 1.0
< 1.0
Proiect Name: 2nd Quarter Chloroform 2023
www.ChemtechFord.com
Units
mg/L
mg/L
ug/L
ug/L
ug/L
ug/L
Certificate of Analysis
Minimum
Reporting
Limit
1.00
0.100
1.0
1.0
1.0
1.0
PO#:
Receipt: 6/16/23 10:50@ 1.3 ·c
Date Reported: 6/28/2023
Project Name: 2nd Quarter Chloroform 2023
Sampled By: Tanner Holliday
Method
EPA300.0
EPA353.2
EPA 8260D /5030A
EPA 8260D /5030A
EPA 8260D /5030A
EPA 8260D /5030A
CtF WO#: 23F1372
Preparation
Date/Time
6/20/23
6/19/23
6/19/23
6/19/23
6/19/23
6/19/23
Lab ID: 23Fl372-ll
Analysis
Date/Time
6/20/23
6/19/23
6/19/23
6/19/23
6/19/23
6/19/23
~
J-LOW-L
Page 13 of 24
Chemtech-Ford Laboratories 9632 South 500 West
Sandy, UT 84070
0:[phone] F: [phone]
www.ChemtechFord.com
Serving the lntermountain West Since 1953
CHEMTECH-FORD
!..ABORATORIES
Energy Fuels Resources, Inc.
Tanner Holliday
6425 South Highway 191
Blanding, UT 84511
Sample ID: TW4-70_06202023
Matrix: Water
Date Sampled: 6/20/23 7:20
lnor·ganic
Chloride
Nitrate+ Nitrite, Total, as N
Volatile Organic Compounds
Carbon Tetrachloride
Chloroform
Chloromethane
Methylene Chloride
Result
40.6
8.14
< 1.0
< 1.0
< 1.0
< 1.0
Proiect Name: 2nd Quarter Chloroform 2023
www.ChemtechFord.com
Units
mg/L
mg/L
ug/L
ug/L
ug/L
ug/L
Certificate of Analysis
Minimum
Reporting
Limit
1.00
0.500
1.0
1.0
1.0
1.0
PO#:
Receipt: 6/22/23 13:30@ -2.2 ·c
Date Reported: 6/30/2023
Project Name: 2nd Quarter Chloroform 2023
Sampled By: Tanner Holliday
Method
EPA300.0
EPA353.2
EPA 8260D /5030A
EPA 8260D 15030A
EPA 8260D 15030A
EPA 8260D 15030A
CtF WO#: 23F1815
Preparation
Date/Time
6/26/23
6/26/23
6/26/23
6126123
6126123
6/26123
Lab ID: 23Fl815-07
Analysis
Date/Time
6/27/23
6/26/23
6/26/23
6126123
6126123
6126123
~
Page 9 of 34
I Chemtech-Ford Laboratories 9632 South 500 West
Sandy, UT 84070
0 :[phone] F: [phone]
www.ChemtechFord.com
Serving the lntermountain West Since 1953
CHEMTECH-FOR0
r..ABOMATORIES
Energy Fuels Resources, Inc.
Tanner Holliday
6425 South Highway 191
Blanding, UT 84511
Sample ID: TW4-75_06212023
Matrix: Water
Date Sampled: 6/21/23 7:15
Inorganic
Chloride
Nitrate+ Nitrite, Total, as N
\ olatile Organic Compounds
Carbon Tetrachloride
Chloroform
Chloromethane
Methylene Chloride
38.0
0.733
< 1.0
4.8
< 1.0
< 1.0
Proiect Name: 2nd Quarter Chloroform 2023
www.ChemtechFord.com
Units
mg/L
mg/L
ug/L
ug/L
ug/L
ug/L
Certificate of Analysis
Minimum
Reporting
Limit
1.00
0.100
1.0
1.0
1.0
1.0
PO#:
Receipt: 6/22/23 13:30@ -2.2 ·c
Date Reported: 6/30/2023
Project Name: 2nd Quarter Chloroform 2023
Sampled By: Tanner Holliday
Method
EPA300.0
EPA353.2
EPA 8260D /5030A
EPA 8260D /5030A
EPA 8260D /5030A
EPA 8260D /5030A
CtF WO#: 23F1815
Preparation
Date/Time
6/26/23
6/27/23
6/27/23
6/27/23
6/27/23
6/27/23
Lab ID: 23F1815-20
Analysis
Date/Time
6/27/23
6/27/23
6/27/23
6/27/23
6/27/23
6/27/23
fulill1
Page 22 of 34
I Chemtech-Ford Laboratories 9632 South 500 West
Sandy, UT 84070
0:[phone] F: [phone]
www.ChemtechFord.com
Serving the lntermountain West Since 1953
CHEMTECH-FORD
:..ABORATORIES
Energy Fuels Resources, Inc.
Tanner Holliday
6425 South Highway 191
Blanding, UT 84511
Sample ID: Trip Blank
Matrix: Water
Date Sampled: 6/13/23 7:35
Volatile Organic Compounds
Carbon Tetrachloride
Chloroform
Chloromethane
Methylene Chloride
< 1.0
< 1.0
< 1.0
< 1.0
Proiect Name: 2nd Quarter Chlorform 2023
www.ChemtechFord.com
Units
ug/L
ug/L
ug/L
ug/L
Certificate of Analysis
Minimum
Reporting
Limit
1.0
1.0
1.0
1.0
PO#:
Receipt: 6/15/23 10:55@ -2.3 ·c
Date Reported: 6/28/2023
Project Name: 2nd Quarter Chlorform 2023
Sampled By: Tanner Holliday
Method
EPA 8260D /5030A
EPA 8260D /5030A
EPA 8260D /5030A
EPA 8260D /5030A
CtF WO#: 23F1268
Preparation
Date/Time
6/15/23
6/15/23
6/15/23
6/15/23
Lab ID: 23F1268-18
Analysis
Date/Time
6/15/23
6/15/23
6/15/23
6/15/23
Page 20 of 32
Chemtech-Ford Laboratories 9632 South 500 West
Sandy, UT 84070
0:[phone] F: [phone]
www.ChemtechFord.com CHEMTECH-FORD
LABORATORIES
Energy Fuels Resources, Inc.
Tanner Holliday
6425 South Highway 191
Blanding, UT 84511
Sample ID: Trip Blank
Serving the lntermountain West Since 1953
Certificate of Analysis
PO#:
Receipt: 6/16/23 10:50 @ 1.3 ·c
Date Reported: 6/28/2023
Project Name: 2nd Quarter Chloroform 2023
Matrix: Water Lab ID: 23F1372-12
Date Sampled: 6/15/23 6:20 Sampled By: Tanner Holliday
\'olalilr Oq~anic Compounds
Carbon Tetrachloride < 1.0
Chloroform < 1.0
Chloromethane < 1.0
Methylene Chloride < 1.0
Project Name: 2nd Quarter Chloroform 2023
www.ChemtechFord.com
ug/L
ug/L
ug/L
ug/L
Minimum
Reporting Preparation
Method Date/Time
1.0 EPA 8260D /5030A 6/19/23
1.0 EPA 8260D /5030A 6/l 9/23
1.0 EPA 8260D /5030A 6/19/23
1.0 EPA 8260D /5030A 6/l 9/23
CtF WO#: 23F1372
Analysis
Date/Time
6/19/23
6/19/23
6/19/23
6/19/23
J-LOW-L
Page 14 of 24
I Chemtech-F ord Laboratories 9632 South 500 West
Sandy, UT 84070
0 :[phone] F: [phone]
www.ChemtechFord.com
Serving the lntermountain West Since 1953
CHEMTECH-FORD
LASORA'l'ORIES
Energy Fuels Resources, Inc.
Tanner Holliday
6425 South Highway 191
Blanding, UT 84511
Sample ID: Trip Blank
Matrix: Water
Date Sampled: 6/20/23 7:01
\'olatile Organic Compounds
Carbon Tetrachloride
Chloroform
Chloromethane
Methylene Chloride
< 1.0
< 1.0
< 1.0
< 1.0
Proiect Name: 2nd Quarter Chloroform 2023
www.ChemtechFord.com
Units
ug/L
ug/L
ug/L
ug/L
Certificate of Analysis
Minimum
Reporting
Limit
1.0
1.0
1.0
1.0
PO#:
Receipt: 6/22123 13:30@ -2.2 ·c
Date Reported: 6/30/2023
Project Name: 2nd Quarter Chloroform 2023
Sampled By: Tanner Holliday
Method
EPA 8260D /5030A
EPA 8260D /5030A
EPA 8260D /5030A
EPA 8260D /5030A
CtF WO#: 23F1815
Preparation
Date/Time
6/26/23
6/26/23
6/26/23
6/26/23
Lab ID: 23F1815-21
Analysis
Date/Time
6/26/23
6/26/23
6/26/23
6/26/23
fug{fil
Page 23 of 34
9632 South 500 West
CHEMTECH~FORD
L,\BO?.>\TO~lfS
6/28/2023
Work Order: 23F1268
Project: 2nd Quarter Chlorform 2023
Energy Fuels Resources, Inc.
Attn: Tanner Holliday
6425 South Highway 191
Blanding, UT 84511
Client Service Contact: 801.262.7299
The analyses presented on this report were performed in accordance with the
National Environmental Laboratory Accreditation Program (NELAP) unless
noted in the comments, flags, or case narrative. If the report is to be used for
regulatory compliance, it should be presented in its entirety, and not be
altered.
Approved By:
Melissa Connolly, Project Manager
Sandy, Utah 84070 801.262.7299 Main 866.792.0093 Fax
Serving the /ntermountain West since 1953
www.ChemtechFord.com
Page 1 of 32
CHEMTECH-FORD
t.AFIO~ATORIE:S
Chemtech-Ford Laboratories
Serving the lntermountain West Since 1953
9632 South 500 West
Sandy, UT 84070
0:[phone] F: [phone]
www.ChemtechFord.com
Energy Fuels Resources, Inc.
Project: 2nd Quarter Chlorform 2023
Project Manager: Tanner Holliday
Laboratory ID
23F1268-01
23F1268-02
23F1268-03
23F1268-04
23F1268-05
23F1268-06
23F1268-07
23F1268-08
23F1268-09
23F1268-10
23F1268-11
23F1268-12
23F1268-13
23F1268-14
23F1268-15
23F1268-16
23F1268-17
23F1268-18
23F1268-19
Sample Name
TW4-25_06132023
TW4-24_06132023
TW4-19_06132023
TW4-40_06132023
TW4-21 _06132023
MW-26_06132023
TW4-02_06132023
TW4-01_06132023
TW 4-04 _ 06132023
TW 4-41 _ 06132023
MW-04 _ 06132023
TW4-39_06132023
TW 4-22 _ 06132023
TW4-11_06132023
TW4-37 _ 06132023
TW4-60_06132023
TW4-03R_06142023
Trip Blank
MW-32_06142023
Sample Preparation
Work Order Report Narrative
All samples were prepared within method specified holding times. No preparation issues were noted.
Method Blanks
All blank values were within method acceptance criteria. No blank values exceeded the minimum reporting limit for any
analysis in this work order.
Laboratory Control Samples
All laboratory control samples were within method acceptance criteria.
Method Spikes
All method spike recoveries were within method acceptance criteria, except as noted by qualifying flags.
Method Spike Duplicates
All method spike duplicates were within method acceptance criteria, except as noted by qualifying flags.
Corrective Actions
There are no corrective actions associated with this work order.
Page 2 of 32
CHEMTECH-FORD
L.ABORArORIES
Chemtech-Ford Laboratories
Serving the lntermountain West Since 1953
9632 South 500 West
Sandy, UT 84070
0:[phone] F: [phone]
www.ChemtechFord.com
Certificate of Analysis
Energy Fuels Resources, Inc.
Tanner Holliday
6425 South Highway 191
Blanding, UT 84511
Report Footnotes
Abbreviations
ND= Not detected at the corresponding Minimum Reporting Limit (MRL).
PO#:
Receipt: 6/15/23 10:55 @ -2.3 °C
Date Reported: 6/28/2023
Project Name: 2nd Quarter Chlorform 2023
1 mg/L = one milligram per liter or 1 mg/kg = one milligram per kilogram = I part per million.
1 ug/L = one microgram per liter or I ug/kg = one microgram per kilogram = I part per billion.
1 ng/L = one nanogram per liter or 1 ng/kg = one nanogram per kilogram = 1 part per trillion.
Project Name: 2nd Quarter Chlorform 2023
www.ChemtechFord.com
CtF WO#: 23F1268
Page 22 of 32
~
Client:
Address:
American West
Analytical Laboratories
463 W 3600 S Sall Lake City, UT 84115
Phone# [phone] Toll Free# [phone]
Fa,• [phone] Email awal@awal-labs com
www.awal-labs.com
Energy Fuels Resources, Inc.
6425 S. Hwy. 191
Blanding, UT 84511
Contact: Tanner HoWday
Phone#: [phone] Cell#:
CHAIN OF CUSTODY
AWAL Lab Sample Set# All analysis will be conducted using NELAP accredited melhods and all data will be reported using AWAL'e standard anelyte 1131.s end repor1ing
limit& (POL) unless spocJncally requested olheNlise on this Chain of Custody end/or attached doeumenteUon Page 1 of 2
QC Level:
3
Tum Around Time:
Standard
Unless olher arrangements have been made, 11Due O~te:
algnod reports 'MIi be emailed by 5:00 pm on
!he day they an, due
X Include EDD:
LOCUS UPLOAD
EXCEL
Field Filtered For.
For Compliance With:
□ NELAP
Laboratory Use Only
:$ampla Ware·
1~rhand delivered
2 Amblento~
3 Temperature ~l.i ·c -----------Emal: thoWday(a.energyfaela.com; KWeinelr1<energyfaela.com
Project Name: 2nd Quarter Chloroform 2023
Project#
PO#:
Sampler Name: Tanner Holliday
::i.3<F\ollR<is'°
TW4-25_06132023
TW4-24_06132023
TW4-19_06132023
TW4-40_06132023
TW4-21_06132023
o l!IIW-26_06132023
TW4-02_06132023
& ITW4-01_06132023
o TW4-04_06132023
IC TW4-41_06132023
1 MW-04_06132023
•~ TW4-39_06132023
13 TW4-22_06132023
Sam_jlle ID:
Rofi-000~-\ // //./ ISlc!MtllfO -........ldJIJUJL ffA
_f!rinlNll'mt!
!Pllnl N.-wnn.i
'Roll,...-by
,Sigf)nh.lllft
,Pnnl NJWT'lit
Rl>'lnqubl,00 by
ISiaMtunio
P11IJIIN11mo;
T~l~.:!'i
/
"
o<;-d-1 Date
Sampled
6/13/2023
6/13/2023
6/13/2023
6/13/2023
6/13/2023
6/13/2023
6/13/2023
6/13/2023
6/13/2023
6/13/2023
6/13/2023
6/13/2023
6/13/2023
oou,·
nmo·
Olllo
rffll11'
O~h,
nmo·
o ....
Tim ..
"" &
c:i ~ C, 0-O') I!! X ~ ... C, i!! 'C: C') 0 IO
:§ ;;; 0 C, "' :::; C, ~ C: II!; "1 0 ., ---:t. ~ Time u Q. N 0 E 0 u g Sampled .. .. I/] II!;
745 5 w X X X
755 5 w X X X
1235 5 w X X X
1035 5 w X X X
735 5 w X X X
940 5 w X X X
956 5 w X X X
1010 5 w X X X
1026 5 w X X X
1018 5 w X X X
1003 5 w X X X
930 5 w X X X
803 5 w X X X
;, C
C] 0
;;:, :!;!
'i: i i\o ~ .!! C: a,"' -~ a., = ~ ~ .i ~ ~ "E 1 ~ a. wl 1
a., ~ ~ .K I I-c: ¥ ==~
~ g
a, .!! ~] ~ r /5-cQ.v, ~ ~ g ~ QJ -u ·u ~ u u !t: o O O => U U U VI ~~~~
..c: 0 -u :~ ~ ~
"! 1! t ~ a, O a..ruQ)u ~ 1 ! ~ ~
1i ~~-g] : ] ~ .:; ~ .! U"I 5 0 QJ !J~~~
□ RCRA
□ CWA
□ SOWA
□ ELAPIA2LA
□ NLLAP
D Non-Compliance
D Other:
Known Hazards
&
Sam_jlle Comments
4 Recetved Broken/Leaking
(Improperly S..111,U.,.,.
y ~
6 o perty Preserved N
Checked at beoch
y N
e Received Within
(i}'lng Tlmes
N
-1--t--------------tF.c TepeWa:
1 rP~"°"' on Outer Package
L):I N NA
2 ~ on O~er Package C,/ N NA
3 Pretenl on ~e
y QY NA
4 Unbroken on Sample ~
y N l5'
___ .,_ ____________ ..,.
1
0lscrapanclN Bulwaen Semple
l..abela end COC Remrd?
y N
""'"' I / CJ:y (<;"/ 'L1 /(.'$.!;.-Special Instructions:
nm..
fRO<d•ed t,y: IDO!o: II See the Analytical Scope of Work for Reporting Limits and VOC
f !9/'"''-'• I llanalyte list. rrrno;
O~n.
Tiino•
o ...
th1,o:
w /').°'J '( Ap 2.Bi.
t,) IAPS 12-1e7 YYY 0.3'llS.2. S•ll"( Page 23 of 32
/2_,r,t
American West
Analytical Laboratories
463 W 3600 S Sall Lake City, UT 84115
CHAIN OF CUSTODY
AWAL Lab Sample Set #
Phone# [phone] Toll Free# [phone]
All analysis wm be conduded using NELAP eccrediled me1hoda and ell data wlll be reported using AWAL'e standard enalyte lhds and reporting
limlts (POL) unless speclncally requested otherwise on this Chain of Cuslody and/or attached documentation Page 2 of 2
~ Fax# [phone] Email [e-mail]
www.awal-labs.com
Client: Energy Fuels Resources, Inc.
Address: 6425 8. Hwy. 191
Blanding, UT 84511
Contact Tanner Holliday
(4351 678-2221 Phone#: Cell#:
QC Laval:
3
-----------Email: thoWday(a,enerofaela.com; KWelneY~-enerc,fa.el.9.com
Project Name: 2nd Quarter Chloroform 2023
Project#:
PO#: -------
Sampler Name: Tanner Holllday
;;/3~ l8v% Samele ID: J 0~ i;)
•• TW4-11_06132023
15 TW4-37_06132023
,e TW4-60_06132023
11 TW4-03R_06142023
18 TRIP BLA!IK
,g M\Al· 3~-O'-1'1201.3
:!II
1
22
>.3
,.
l$
20 L
~";nq,n-by~ If/~/ SJ!IMIIOO ---J/JIIII X -
er,.-Namo~ T.nnnot _fiollkl-1!'t
Date
Sampled
6/13/2023
6/13/2023
6/13/2023
6/14/2023
6/13/2023
(./1'1/ZOZJ
Dato-. "''~Zl Timn.
II
Time
Sample,d
948
905
1300
630
735
II 10
'o "'
. ~
j
5 IW
5 IW
5 IW
5 IW
3 IW
tl lw
"" l:i !:l.
l'I 2 .... " i
X
X
X
X
'I.
c'
~ ... 0
C 5l :t. u
X
X
X
X
"
ROCIOl,1<llly ~~ s Nr!Ufl!II -----
Pmll.N'ttmo:
G' C 10 ~
~ t)
~
X
X
X
X
X
>t
Tum Around Time: Unless other arrangements have been made, IIO ue D cite:
signed reports wilt be emailed by 5:00 pm on
.. C
Slandard
g '"Cl
! ~ f~ <ll ~ C: ~ CCI :2 ~ ; 1 ~ n3 ~ >-0. .... .a., .D -g K ·~ i
QJ ~ i ~ I >-a:; )l
=='2:5
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.,
§
0 :>
-~ QJ -a l9 -o -E C QJ ~ Ill o"'OO.V'I u .2 E ..... ..,. V O C: ~ E u -~ ~ ~ u ii= .3 u 8 ~ ~~~
:~ ~ ~ 1 :{l :? '30:M~QJ b,~.E~~ 'i ~ ~ ~ 0
: -g i ~ l -a. ~ g 5 ~ E u u u Ci:.'.
JI ~8~~
,-· Dl./,.,/n
rm1u'
the day lhey are due
X Include EDD:
LOCUS UPLOAD
EXCSL
Field Filtered For.
For Compliance With:
D NELAP
D RCRA
D CWA
D SOWA
D ELAPIA2LA
D NLLAP
D Non-<:ompliance
D Other.
Known Hazards
&
Sam_J)le Comments
Laboratory Use Only
ISampi.Wo,o
1~or hand deltvered
2 Ambtento~
3 Tompen,lura -2... 1
~ Rocelvod Broken/Leaking
(lmpropelly s.a1-,i;,.,,_
y \..V
5 Pn,porty P""8rvod
y N
~odetbondi
y
6 Received Within
c;ldlng Times
N
N
--+---+--+--------------1FCT_W.., 1~ on Outer Package 'lY N NA
2 p,;,,0Mt1 on Ouler Package
lJ/ N NA
3 Present on ~o
y (!Y NA
4 Unbroken on Sample
y N Q
lo.a,,pan-Bol'Mlen Semple --t---t--1---------------11'-"bela end COC Reoonl?
y N
L0"5> Special Instructions:
·c
--lRiic,iv"' ~ -Otllo· II See the Analytical Scope of Work for Reporting Limits and VOC 0Mi>; ROCQrvod tJ IS!onol .. ,
~ntNIIIIHJ
RollOQloohod b,·
ISinnOI~
PllotNmno
11o1,~,od by·
ls1cm11Mo
Pri!!tNamn.
LI.PS 1-i.. 1137 Y 11Y 03 q~5·2-5'/l'f
T)mo.
tu
r,J
ISlono! .. • I llanalyte tis l. Tlmo
01110-: ....
Tino,,
ODlfJ
n,..,,
iJ..~'1 [3 A, [)., t; 1.-Page 24 of 32
ILIH'I
QC Report for Work Order (WO) -23F1268
Analyte %Rec RPO Limits RPO Max Result Source Cone
Blank -EPA 300.0
QC Sample ID: BXF0844-BLK1 Batch: BXF0844
Date Prepared: 06/19/2023 Date Analyzed: 06/19/2023 Units: mg/L
Chloride ND
QC Sample ID: BXF0860-BLK1 Batch: BXF0860
Date Prepared: 06/19/2023 Date Analyzed: 06/19/2023 Units: mg/L
Chloride ND
LCS -EPA 300.0
QC Sample ID: BXF0844-BS1 Batch: BXF0844
Date Prepared: 06/19/2023 Date Analyzed: 06/19/2023 Units: mg/L
Chloride 95.5 90 -110 47.7
QC Sample ID: BXF0860-BS1 Batch: BXF0860
Date Prepared: 06/19/2023 Date Analyzed: 06/19/2023 Units: mg/L
Chloride 96.1 90-110 48.1
Matrix Spike -EPA 300.0
QC Sample ID: BXF0844-MS1 Batch: BXF0844 QC Source Sample: XXXXXXX-XX
Date Prepared: 06/19/2023 Date Analyzed: 06/19/2023 Units: mg/L
Chloride 84.5 80-120 1200 1030
QC Sample ID: BXF0844-MS2 Batch: BXF0844 QC Source Sample: 23Fl268-0l
Date Prepared: 06/19/2023 Date Analyzed: 06/19/2023 Units: mg/L
Chloride 84.2 80 -120 82.3 73.0
QC Sample ID: BXF0860-MS1 Batch: BXF0860 QC Source Sample: XXXXXXX-XX
Date Prepared: 06/19/2023 Date Analyzed: 06/19/2023 Units: mg/L
Chloride 85.9 80 -120 119 109
QC Sample ID: BXF0860-MS2 Batch: BXF0860 QC Source Sample: XXXXXXX-XX
Date Prepared: 06/19/2023 Date Analyzed: 06/20/2023 Units: mg/L
Chloride 101 80-120 34.7 23.5
Matrix Spike Dup -EPA 300.0
QC Sample ID: BXF0844-MSD1 Batch: BXF0844 QC Source Sample: XXXXXXX-XX
Date Prepared: 06/19/2023 Date Analyzed: 06/19/2023 Units: mg/L
Chloride 78.8 0.950 80 -120 20 1190 1030
QM-12 -The MSD recovery was outside acceptance limits, but passed duplicate spike acceptance criteria. The batch
was accepted based on the acceptability of the MS.
QC Sample ID: BXF0844-MSD2
Date Prepared: 06/19/2023
Chloride
QC Sample ID: BXF0860-MSD1
Date Prepared: 06/19/2023
Chloride
QC Sample ID: BXF0860-MSD2
Date Prepared: 06/19/2023
Chloride
CtF WO#: 23F1268
www.ChemtechFord.com
Batch: BXF0844 QC Source Sample: 23Fl268-0l
Date Analyzed: 06/19/2023 Units:
85.6 0.194 80 -120 20 82.5 73.0
Batch: BXF0860 QC Source Sample: XXXXXXX-XX
Date Analyzed: 06/19/2023 Units:
84.3 0.149 80 -120 20 119 109
Batch: BXF0860 QC Source Sample: XXXXXXX-XX
Date Analyzed: 06/20/2023 Units:
103 0.575 BO -120 20 34.9 23.5
mg/L
mg/L
mg/L
Spk Value MRL OF
1.00 1.00
1.00 1.00
50.0 1.00 1.00
50.0 1.00 1.00
200 22.0 1.00
11 .1 1.11 1.00
11.1 1.11 1.00
11.1 1.11 1.00
200 22.0 1.00
11 .1 1.11 1.00
11 .1 1.11 1.00
11.1 1.11 1.00
Page 25 of 32
Analyte
QC Sample ID: BXF0837-BLK1
Date Prepared: 06/19/2023
Nitrate+ Nitrite, Total, as N
QC Sample ID: BXF0837-BS1
Date Prepared: 06/19/2023
Nitrate + Nitrite, Total, as N
QC Sample ID: BXF0837-MS1
Date Prepared: 06/19/2023
Nitrate + Nitrite, Total, as N
QC Sample ID: BXF0837-MS2
Date Prepared: 06/19/2023
Nitrate + Nitrite, Total, as N
QC Sample ID: BXF0837-MSD1
Date Prepared: 06/19/2023
Nitrate + Nitrite, Total, as N
QC Sample ID: BXF0837-MSD2
Date Prepared: 06/19/2023
Nitrate+ Nitrite, Total, as N
CtF WO#: 23F1268
www.ChemtechFord.com
QC Report for Work Order (WO) -23F1268
%Rec RPO Limits RPO Max Result Source Cone SpkValue MRL OF
Blank -EPA 353.2
Batch: BXF083 7
Date Analyzed: 06/19/2023 Units: mg/L
ND 0.100 1.00
LCS -EPA 353.2
Batch: BXF083 7
Date Analyzed: 06/19/2023 Units: mg/L
91.5 80 -120 1.83 2.00 0.100 1.00
Matrix Spike -EPA 353.2
Batch: BXF0837 QC Source Sample: 23F1268-01
Date Analyzed: 06/19/2023 Units: mg/L
91.2 BO -120 1.94 1.03 1.00 0.100 1.00
Batch: BXF083 7 QC Source Sample: XXXXXXX-XX
Date Analyzed: 06/19/2023 Units: mg/L
92.2 BO -120 1.25 0.327 1.00 0.100 1.00
Matrix Spike Dup -EPA 353.2
Batch: BXF0837 QC Source Sample: 23Fl268-01
Date Analyzed: 06/19/2023 Units: mg/L
90.5 0.361 BO -120 20 1.94 1.03 1.00 0.100 1.00
Batch: BXF083 7 QC Source Sample: XXXXXXX-XX
Date Analyzed: 06/19/2023 Units: mg/L
93.4 0.956 BO -120 20 1.26 0.327 1.00 0.100 1.00
Page 26 of 32
QC Report for Work Order (WO) -23F1268
Analyte % Rec RPD Limits RPD Max Result Source Cone Spk Value MRL DF
Blank -EPA 8260D /5030A
QC Sample ID: BXF0824-BLK1 Batch: BXF0824
Date Prepared: 06/16/2023 Date Analyzed: 06/16/2023 Units: ug/L
Carbon Tetrachloride ND 1.0 1.00
Chloroform ND 1.0 1.00
Chloromethane ND 1.0 1.00
Methylene Chloride ND 1.0 1.00
QC Sample ID: BXF0824-BLK2 Batch: BXF0824
Date Prepared: 06/16/2023 Date Analyzed: 06/16/2023 Units: ug/L
Carbon Tetrachloride ND 1.0 1.00
Chloroform ND 1.0 1.00
Chloromethane ND 1.0 1.00
Methylene Chloride ND 1.0 1.00
LCS -EPA 8260D /5030A
QC Sample ID: BXF0824-BS 1 Batch: BXF0824
Date Prepared: 06/16/2023 Date Analyzed: 06/16/2023 Units: ug/L
Carbon Tetrachloride 112 70 -130 11.2 10.0 1.0 1.00
Chloroform 105 70 -130 10.5 10.0 1.0 1.00
Chloromethane 88.5 70 -130 8.85 10.0 1.0 1.00
Methylene Chloride 94.5 70-130 9.45 10.0 1.0 1.00
Matrix Spike -EPA 8260D /5030A
QC Sample ID: BXF0763-MS1 Batch: BXF0763 QC Source Sample: XXXXXXX-XX
Date Prepared: 06/15/2023 Date Analyzed: 06/15/2023 Units: ug/L
Carbon Tetrachloride 100 70 -130 2510 ND 2500 250 1.00
Chloroform 91.2 70 -130 2280 ND 2500 250 1.00
Chloromethane 71.6 70 -130 1790 ND 2500 250 1.00
Methylene Chloride 85.3 70 -130 2130 ND 2500 250 1.00
QC Sample ID: BXF0763-MS2 Batch: BXF0763 QC Source Sample: 23Fl268-0l
Date Prepared: 06/15/2023 Date Analyzed: 06/15/2023 Units: ug/L
Carbon Tetrachloride 112 70 -130 56.0 ND 50.0 5.0 1.00
Chloroform 108 70 -130 54.0 ND 50.0 5.0 1.00
Chloromethane 83.1 70-130 41.6 ND 50.0 5.0 1.00
Methylene Chloride 95.2 70 -130 47.6 ND 50.0 5.0 1.00
QC Sample ID: BXF0824-MS1 Batch: BXF0824 QC Source Sample: XXXXXXX-XX
Date Prepared: 06/16/2023 Date Analyzed: 06/16/2023 Units: ug/L
Carbon Tetrachloride 108 70 -130 2710 ND 2500 250 1.00
Chloroform 108 70 -130 2700 ND 2500 250 1.00
Chloromethane 94.7 70 -130 2370 ND 2500 250 1.00
Methylene Chloride 96.9 70 -130 2420 ND 2500 250 1.00
Matrix Spike Dup -EPA 8260D /5030A
QC Sample ID: BXF0763-MSD1 Batch: BXF0763 QC Source Sample: XXXXXXX-XX
Date Prepared: 06/15/2023 Date Analyzed: 06/15/2023 Units: ug/L
Carbon Tetrachloride 96.6 3.96 70 -130 20 2420 ND 2500 250 1.00
Chloroform 94.7 3.77 70 -130 20 2370 ND 2500 250 1.00
Chloromethane 72.7 1.52 70 -130 20 1820 ND 2500 250 1.00
Methylene Chloride 82.6 3.22 70-130 20 2060 ND 2500 250 1.00
QC Sample ID: BXF0763-MSD2 Batch: BXF0763 QC Source Sample: 23Fl268-0l
Date Prepared: 06/15/2023 Date Analyzed: 06/15/2023 Units: ug/L
Carbon Tetrachloride 121 7.47 70-130 20 60.4 ND 50.0 5.0 1.00
Chloroform 102 5.42 70-130 20 51.2 ND 50.0 5.0 1.00
CtF WO#: 23F1268
www.ChemtechFord.com Page 27 of 32
Analyte
QC Sample ID: BXF0763-MSD2
Date Prepared: 06/15/2023
Chloromethane
Methylene Chloride
QC Sample ID: BXF0824-MSD1
Date Prepared: 06/16/2023
Carbon Tetrachloride
Chloroform
Chloromethane
Methylene Chloride
CtF WO#: 23F1268
www.ChemtechFord.com
QC Report for Work Order (WO) -23F1268
%Rec RPO Limits RPO Max Result Source Cone
Matrix Spike Dup -EPA 8260D /5030A (cont.)
Batch: BXF0763 QC Source Sample: 23Fl268-0l
Date Analyzed: 06/15/2023 Units: ug/L
78.8 5.31 70 -130 20 39.4 ND
91.0 4.51 70 -130 20 45.5 ND
Batch: BXF0824 QC Source Sample: XXXXXXX-XX
Date Analyzed: 06/16/2023 Units: ug/L
102 6.38 70 -130 20 2540 ND
112 3.28 70 -130 20 2790 ND
98.2 3.63 70 -130 20 2460 ND
104 7.36 70-130 20 2610 ND
SpkValue MRL OF
50.0 5.0 1.00
50.0 5.0 1.00
2500 250 1.00
2500 250 1.00
2500 250 1.00
2500 250 1.00
Page 28 of 32
Surrogates Report for Work Order (WO) -23F1268
QCID Analyte
BXF0824-BLK1 1,2-Dichloroethane-d4
BXF0824-BLK2 1,2-Dichloroethane-d4
BXF0824-BLK1 4-Bromofluorobenzene
BXF0824-BLK2 4-Bromofluorobenzene
BXF0824-BLK2 Toluene-dB
BXF0824-BLK1 Toluene-dB
BXF0824-BS 1 1,2-Dichloroethane-d4
BXF0824-BS 1 4-Bromofluorobenzene
BXF0824-BS 1 Toluene-dB
BXF0763-MS 1 1,2-Dichloroethane-d4
BXF0763-MS2 1,2-Dichloroethane-d4
BXF0763-MS2 4-Bromofluorobenzene
BXF0763-MS1 4-Bromofluorobenzene
BXF0763-MS1 Toluene-dB
BXF0763-MS2 Toluene-dB
BXF0824-MS 1 1 ,2-Dichloroethane-d4
BXF0824-MS 1 4-Bromofluorobenzene
BXF0824-MS1 Toluene-dB
BXF0763-MSD2 1,2-Dichloroethane-d4
BXF0763-MSD1 1,2-Dichloroethane-d4
BXF0763-MSD2 4-Bromofluorobenzene
BXF0763-MSD1 4-Bromofluorobenzene
BXF0763-MSD2 Toluene-dB
BXF0763-MSD1 Toluene-dB
BXF0824-MSD1 1,2-Dichloroethane-d4
BXF0824-MSD1 4-Bromofluorobenzene
BXF0824-MSD1 Toluene-dB
CtF WO#: 23F1268
www.ChemtechFord.com
% Rec LCL UCL Result
Blank -EPA 8260D /5030A
107 64.2 126 10.7
110 64.2 126 11.0
101 71.4 125 10.1
105 71.4 125 10.5
101 63.2 129 10.1
103 63.2 129 10.3
LCS -EPA 8260D /5030A
108 64.2 126 10.8
100 71.4 125 10.0
100 63.2 129 10.0
Matrix Spike -EPA 8260D /5030A
105 64.2 126 2620
111 64.2 126 55.6
97.3 71.4 125 48.6
98.6 71 .4 125 2460
100 63.2 129 2500
100 63.2 129 50.0
111 64.2 126 2780
99.2 71.4 125 2480
98.9 63.2 129 2470
Matrix Spike Dup -EPA 8260D /5030A
106 64.2 126 53.0
107 64.2 126 2670
101 71 .4 125 50.4
97.8 71.4 125 2440
104 63.2 129 51.8
99.2 63.2 129 2480
115 64.2 126 2880
104 71.4 125 2600
102 63.2 129 2540
SpkValue Batch OF
10.0 BXF0824 1.00
10.0 BXF0824 1.00
10.0 BXF0824 1.00
10.0 BXF0824 1.00
10.0 BXF0824 1.00
10.0 BXF0824 1.00
10.0 BXF0824 1.00
10.0 BXF0824 1.00
10.0 BXF0824 1.00
2500 BXF0763 1.00
50.0 BXF0763 1.00
50.0 BXF0763 1.00
2500 BXF0763 1.00
2500 BXF0763 1.00
50.0 BXF0763 1.00
2500 BXF0824 1.00
2500 BXF0824 1.00
2500 BXF0824 1.00
50.0 BXF0763 1.00
2500 BXF0763 1.00
50.0 BXF0763 1.00
2500 BXF0763 1.00
50.0 BXF0763 1.00
2500 BXF0763 1.00
2500 BXF0824 1.00
2500 BXF0824 1.00
2500 BXF0824 1.00
Page 29 of 32
Surrogate Recoveries (Field Samples)
LabNumber Analyte
8260 Low Level Volatiles
23F1268-01 4-Bromofluorobenzene
23F1268-01 Toluene-dB
23F1268-01 1,2-Dichloroethane-d4
8260 Low Level Volatiles
23F1268-02 1,2-Dichloroethane-d4
23F1268-02 4-Bromofluorobenzene
23F1268-02 Toluene-dB
8260 Low Level Volatiles
23F1268-03 1,2-Dichloroethane-d4
23F1268-03
23F1268-03
4-Bromofluorobenzene
Toluene-dB
8260 Low Level Volatiles
23F1268-04 1,2-Dichloroethane-d4
23F1268-04
23F1268-04
4-Bromofluorobenzene
Toluene-dB
8260 Low Level Volatiles
23F1268-05 4-Bromofluorobenzene
23F1268-05 Toluene-dB
23F1268-05 1,2-Dichloroethane-d4
8260 Low Level Volatiles
23F1268-06 1,2-Dichloroethane-d4
23F1268-06 4-Bromofluorobenzene
23F1268-06 Toluene-dB
8260 Low Level Volatiles
23F1268-07 Toluene-dB
23F1268-07 4-Bromofluorobenzene
23F1268-07 1,2-Dichloroethane-d4
8260 Low Level Volatiles
23F1268-08 1,2-Dichloroethane-d4
23F1268-08 Toluene-dB
CtF WO#: 23F1268
www.ChemtechFord.com
Result
9.79
10.0
11.2
11.2
9.85
10.0
10.2
9.86
10.1
10.8
10.2
10.2
10.0
10.0
11.1
11.1
9.86
10.1
10.0
9.99
11.4
12.6
10.0
Spklvl
10.0
10.0
10.0
10.0
10.0
10.0
10.0
10.0
10.0
10.0
10.0
10.0
10.0
10.0
10.0
10.0
10.0
10.0
10.0
10.0
10.0
10.0
10.0
%Rec
97.9
100
112
112
98.5
100
102
98.6
101
108
102
102
100
100
111
111
98.6
101
100
99.9
114
126
100
LCL UCL Qualifier
71.4 125
63.2 129
64.2 126
64.2 126
71.4 125
63.2 129
64.2 126
71.4 125
63.2 129
64.2 126
71.4 125
63.2 129
71.4 125
63.2 129
64.2 126
64.2 126
71.4 125
63.2 129
63.2 129
71.4 125
64.2 126
64.2 126
63.2 129
Page 30 of 32
23F1268-08 4-Bromofluorobenzene
8260 Low Level Volatiles
23F1268-09 4-Bromofluorobenzene
23F1268-09 Toluene-dB
23F1268-09 1 ,2-Dichloroethane-d4
8260 Low Level Volatiles
23F1268-10 Toluene-dB
23F1268-10 1 ,2-Dichloroethane-d4
23F1268-10 4-Bromofluorobenzene
8260 Low Level Volatiles
23F1268-11 4-Bromofluorobenzene
23F1268-11 Toluene-dB
23F1268-11 1 ,2-Dichloroethane-d4
8260 Low Level Volatiles
23F1268-12 Toluene-dB
23F1268-12 4-Bromofluorobenzene
23F1268-12 1,2-Dichloroethane-d4
8260 Low Level Volatiles
23F1268-13 Toluene-dB
23F1268-13 1,2-Dichloroethane-d4
23F1268-13 4-Bromofluorobenzene
8260 Low Level Volatiles
23F1268-14 1,2-Dichloroethane-d4
23F1268-14
23F1268-14
4-Bromofluorobenzene
Toluene-dB
8260 Low Level Volatiles
23F1268-15 4-Bromofluorobenzene
23F1268-15 Toluene-dB
23F1268-15 1,2-Dichloroethane-d4
8260 Low Level Volatiles
23F1268-16 Toluene-dB
23F1268-16 4-Bromofluorobenzene
23F1268-16 1,2-Dichloroethane-d4
CtF WO#: 23F1268
www.ChemtechFord.com
9.75
9.93
9.97
11.2
10.0
11.0
10.0
10.1
9.86
11.2
9.98
10.0
10.6
10.0
10.2
9.92
10.4
10.2
10.1
10.2
10.0
10.1
10.2
10.2
11.4
10.0
10.0
10.0
10.0
10.0
10.0
10.0
10.0
10.0
10.0
10.0
10.0
10.0
10.0
10.0
10.0
10.0
10.0
10.0
10.0
10.0
10.0
10.0
10.0
10.0
97.5
99.3
99.7
112
100
110
100
101
98.6
112
99.8
100
106
100
102
99.2
104
102
101
102
100
101
102
102
114
71.4 125
71.4 125
63.2 129
64.2 126
63.2 129
64.2 126
71.4 125
71.4 125
63.2 129
64.2 126
63.2 129
71.4 125
64.2 126
63.2 129
64.2 126
71.4 125
64.2 126
71.4 125
63.2 129
71.4 125
63.2 129
64.2 126
63.2 129
71.4 125
64.2 126
Page 31 of 32
8260 Low Level Volatiles
23F1268-17 4-Bromofluorobenzene
23F1268-17 Toluene-dB
23F1268-17 1,2-Dichloroethane-d4
8260 Low Level Volatiles
23F1268-18 Toluene-dB
23F1268-18 1,2-Dichloroethane-d4
23F1268-18 4-Bromofluorobenzene
8260 Low Level Volatiles
23F1268-19 1,2-Dichloroethane-d4
23F1268-19
23F1268-19
4-Bromofluorobenzene
Toluene-dB
CtF WO#: 23F1268
www.ChemtechFord.com
10.0
10.0
11.4
10.0
11.4
9.91
11.7
10.2
10.0
10.0
10.0
10.0
10.0
10.0
10.0
10.0
10.0
10.0
100
100
114
100
114
99.1
117
102
100
71.4 125
63.2 129
64.2 126
63.2 129
64.2 126
71.4 125
64.2 126
71.4 125
63.2 129
Page 32 of 32
I
9632 South 500 West
I
CHEMTECH~FORD
L.\80?.I\TO~lcS
6/28/2023
Work Order: 23Fl372
Project: 2nd Quarter Chloroform 2023
Energy Fuels Resources, Inc.
Attn: Tanner Holliday
6425 South Highway 191
Blanding, UT 84511
Client Service Contact: 801.262. 7299
The analyses presented on this report were performed in accordance with the
National Environmental Laboratory Accreditation Program (NELAP) unless
noted in the comments, flags, or case narrative. If the report is to be used for
regulatory compliance, it should be presented in its entirety, and not be
altered.
Approved By:
Melissa Connolly, Project Manager
Sandy, Utah 84070 801.262.7299 Main 866.792.0093 Fax
Serving the lntermountain West since 1953
www.ChemtechFord.com
Page 1 of 24
CHEMTECH-FORD
LAROP.ATORll:cS
Chemtech-Ford Laboratories
Serving the lntermountain West Since 1953
9632 South 500 West
Sandy, UT 84070
0:[phone] F: [phone]
www.ChemtechFord.com
Energy Fuels Resources, Inc.
Project: 2nd Quarter Chloroform 2023
Project Manager: Tanner Holliday
Laborato01 ID Sam12le Name
23F1372-01 TW4-03_06152023
23F1372-02 TW4-42_06152023
23F1372-03 TW4-12 06152023
23F1372-04 TW4-28_06152023
23F1372-05 TW4-32_06152023
23F1372-06 TW4-13 06152023
23F1372-07 TW4-14_06152023
23F1372-08 TW4-36_06152023
23F1372-09 TW4-31 06152023
23F1372-10 TW4-43_06152023
23F1372-11 TW4-65_06152023
23F1372-12 Trip Blank
Sample Preparation
Work Order Report Narrative
All samples were prepared within method specified holding times. No preparation issues were noted.
Method Blanks
All blank values were within method acceptance criteria. No blank values exceeded the minimum reporting limit for any
analysis in this work order.
Laboratory Control Samples
All laboratory control samples were within method acceptance criteria, except as noted by qualifying flags. Batch
BXF0880-BS 1, which contains samples 23F1372-10, -11, and 12, had low LCS recoveries for Chloromethane. It is important
to note that certain flags on an individual analyte do not constitute failure of the method as a whole. EPA methodologies
recognize that it may not be possible for every compound to meet all recovery or percent difference criteria . The batch
passed required method criteria for this analyte. Batch BXF0825-BS1, which contained samples 23F1372-01 through -09,
had high LCS recoveries for Carbon Tetrachloride. Associated samples were all non-detect.
Method Spikes
All method spike recoveries were within method acceptance criteria, except as noted by qualifying flags.
Method Spike Duplicates
All method spike duplicates were within method acceptance criteria, except as noted by qualifying flags.
Corrective Actions
There are no corrective actions associated with this work order.
Page 2 of 24
I
CHEMTECH-FORD
lABORATORIES
Chemtech-Ford Laboratories
Serving the lntermountain West Since 1953
9632 South 500 West
Sandy, UT 84070
0:[phone] F: [phone]
www.ChemtechFord.com
Certificate of Analysis
Energy Fuels Resources, Inc.
Tanner Holliday
6425 South Highway 191
Blanding, UT 84511
Report Footnotes
Abbreviations
ND= Not detected at the corresponding Minimum Reporting Limit (MRL),
PO#:
Receipt: 6/16/23 10:50@ 1.3 ·c
Date Reported: 6/28/2023
Project Name: 2nd Quarter Chloroform 2023
1 mg/L = one milligram per liter or 1 mg/kg= one milligram per kilogram = 1 part per million.
I ug/L = one microgram per liter or 1 ug/kg = one microgram per kilogram = 1 part per billion.
1 ng/L = one nanogram per liter or 1 ng/kg = one nanogram per kilogram = I part per trillion.
Flag Descriptions
J-LOW-L = Estimated low due to low recovery ofLCS
Proiect Name: 2nd Quarter Chloroform 2023
www.ChemtechFord.com
CtF WO#: 23F1372
Page 15 of 24
l -~ r;. l .? / c American West
Analytical Laboratories
463 W 3600 S Sall Lake Ctty, UT 84115
Phone# [phone] Toll Free• [phone]
L~~ Fa,• [phone] Email awal@awal-labs com
www awal-labs.com
Client: Energy Fuels Resources, Inc.
Address: 6425 8. Hwy. 191
Blanding, UT 84511
Contact: Tanner Holliday
Phone#: [phone] CeU#:
Email: thoWdayr'a:.enerafaels.com; KWetneY4enerafaela.c-om
Project Name: 2nd Quarter Chloroform 2023
Project#:
PO#:
Sampler Name: Tanner Holliday
Date
Samole ID: Samoled
TW4-03_06162023 6/16/2023
TW4-42_06162023 6/16/2023
TW4-12_06162023 6/16/2023
TW4-28_06162023 6/16/2023
TW4-32_06162023 6/16/2023
TW4-13_06162023 6/16/2023
TW4-14_06162023 6/16/2023
8 TW4-36_06162023 6/16/2023
, TW4-31_06162023 6/16/2023
> TW4-43_06162023 6/16/2023
1 TW4-65_06152023 6/16/2023
! TRIP BLANK 6/16/2023
l
l.:r~by:..,,. --\ .. _..,.11 46 LJ // /_v' Oete:
6/151202.
Tlme:
Pr1n1Neme: Tanner Hollldav 113Cl
Rellnqulehed by: Date:
Slonatu"'
nm■:
Print Name:
Reflnqulstled by: OB1e:
l""'NIIUr•
Time:
Prlnt:NIIJ!!!!I'
Rellnqui"1ed by: Date:
SlnnAh•o
Tlme:
'Prlnl.Neme:
Time
Sampled
620
633
646
664
700
708
716
766
805
813
633
620
Roa>WOd by'
~tnn..t .....
P,M'lt HnrnaJ
ROCONod by
SlnMl:uro
Pr1nlNMl'IO'
Roaolvodby.
SlnnnhJO
PrW'lt.Nl!ll'f\O:
R.""""'odbl'.
Slgnnturo
Prf,.. N~10:
I
CHAIN OF CUSTODY
All enal'(Sls wl11 be oondudad using NELAP aecrodlted melhods and all dale will be reported using AWAL'a r;tandard analyfe UBI& end reporting
limits (POL) unless specifically rvquested otherwise on lhis Chain of Custody and/or attached Oocumentetlon
QC Level: I Tum Around Time: Un'8s.!!. other ammgemenla have been made,
signed reports will be emailed by 5:00 pm on
3 Standard the day they are due
)( Include EDD:
LOCUS UPLOAD
EXCEL
Field Filtered For.
For Cornpllance With:
0 NELAP
D RCRA
0 CWA
0 SOWA
□ ELAPIA2LA
c' D NLLAP ~ c:i □ Non-Compliance ~ C G' □ Other.
!:2. "' I!! >< ... C ., ·c (') 0 IC C 'iij c:, ~ ·;;; Ii 1= ::; c:, Known Hazards l/) 0 ., ...... :!. • u Q. N t) & 'i5 E i 0 ~ .. Samole Comments .. Ill
5 w X X X
5 w X X X
5 w X X X
5 w X X X
5 w X X X
5 w X X X
5 w X X X
5 w X X X
5 w X X X
5 w X X X
s w X X X
3 w X
AWAL Lab Sample Set#
Page of
l°ue Date: I
Laboratory Use Only
Sempfee Wer•:
, ~r hand delivered
Ambfentor~ 2
I, 3-c 3 Tamperwtwe
• Received &ok:enfl..eeking
~mproperly Seal°tV
5$>,Pt-vod y N ..... -N
6 5aodW11hln
1 Twno,
y N
COC~: 1 on OIAer Padtage
V N NA
2 Unbroken on Outer Package
y N NA
3 Prasert""~ y N NA
4 Unbroken on Sampte G y N
0~eaBetwera,Sample
Ulbels and CCC R9aln:f?
y N
J\\ ) I ) r,t-"\ 0 __./-c.(u D,Af JJ I I la Ir ,/'7 Special Instructions:
/,?,,. Tlmo I 105 6
o.~., See the Analytical Scope of Work for Reporting Limits and voe
nnnlvlc list.
ft i.R5 ·: il 1?7 t--1'(0 }qos215z.g /U -lzqq Sample Receipt Conditions:
'\--... Custody Seals Present ~ Correct Containers AQ --11-tl., ( ) Headspace Present (VO() 'l\l Containers Intact ~ COC Included ( ) Temperature Blank w C.7)-tu t.I '"( COC and Labels Match 'N.,_ CO( Complete ~ Receivcd,::~1Pld
'(Received on Ice ~ufficient Sample Volume Chocked by.
I 9rl1.. v,/('7,) 12 '8'~
Page 16 of 24
Analyte
QC Sample ID: BXF0860-BLK1
Date Prepared: 06/19/2023
Chloride
QC Sample ID: BXF0913-BLKI
Date Prepared: 06/20/2023
Chloride
QC Sample ID: BXF0860-BSI
Date Prepared: 06/19/2023
Chloride
QC Sample ID: BXF0913-BSI
Date Prepared: 06/20/2023
Chloride
QC Sample ID: BXF0860-MS1
Date Prepared: 06/19/2023
Chloride
QC Sample ID: BXF0860-MS2
Date Prepared: 06/19/2023
Chloride
QC Sample ID: BXF0913-MSJ
Date Prepared: 06/20/2023
Chloride
QC Sample ID: BXF0913-MS2
Date Prepared: 06/20/2023
Chloride
QC Sample ID: BXF0860-MSD1
Date Prepared: 06/19/2023
Chloride
QC Sample ID: BXF0860-MSD2
Date Prepared: 06/19/2023
Chloride
QC Sample ID: BXF0913-MSD1
Date Prepared: 06/20/2023
Chloride
QC Sample ID: BXF0913-MSD2
Date Prepared: 06/20/2023
Chloride
CtF WO#: 23F1372
www.ChemtechFord.com
QC Report for Work Order (WO) -23F1372
% Rec RPD Limits RPD Max Result Source Cone
Blank -EPA 300.0
Batch: BXF0860
Date Analyzed: 06/19/2023 Units: mg/L
ND
Batch: BXF09 l 3
Date Analyzed: 06/20/2023 Units: mg/L
ND
LCS -EPA 300.0
Batch: BXF0860
Date Analyzed: 06/19/2023 Units: mg/L
96.1 90-110 48.1
Batch: BXF0913
Date Analyzed: 06/20/2023 Units: mg/L
97.9 90-110 49.0
Matrix Spike -EPA 300.0
Batch: BXF0860 QC Source Sample: XXXXXXX-XX
Date Analyzed: 06/19/2023 Units: mg/L
85.9 80-120 119 109
Batch: BXF0860 QC Source Sample: 23F1372-0l
Date Analyzed: 06/20/2023 Units: mg/L
101 80 -120 34.7 23.5
Batch: BXF0913 QC Source Sample: XXXXXXX-XX
Date Analyzed: 06/20/2023 Units: mg/L
92.1 80-120 92100 ND
Batch: BXF09 l 3 QC Source Sample: XXXXXXX-XX
Date Analyzed: 06/20/2023 Units: mg/L
96.0 80 -120 102 6.31
Matrix Spike Dup -EPA 300.0
Batch: BXF0860 QC Source Sample: XXXXXXX-XX
Date Analyzed: 06/19/2023 Units: mg/L
84.3 0.149 80-120 20 119 109
Batch: BXF0860 QC Source Sample: 23F1372-0l
Date Analyzed: 06/20/2023 Units: mg/L
103 0.575 80 -120 20 34.9 23.5
Batch: BXF0913 QC Source Sample: XXXXXXX-XX
Date Analyzed: 06/20/2023 Units: mg/L
95.1 3.13 80-120 20 95100 ND
Batch: BXF0913 QC Source Sample: XXXXXXX-XX
Date Analyzed: 06/20/2023 Units: mg/L
96.1 0.0462 80-120 20 102 6.31
Spk Value MRL DF
1.00 1.00
1.00 1.00
50.0 1,00 1.00
50.0 1.00 1.00
11.1 1.11 1.00
11.1 1.11 1.00
100000 11000 1.00
100 11.0 1.00
11.1 1.11 1.00
11.1 1.11 1.00
100000 11000 1.00
100 11.0 1.00
Page 17 of 24
Analyte
QC Sample ID: BXF0838-BLK1
Date Prepared: 06/19/2023
Nitrate+ Nitrite, Total, as N
QC Sample ID: BXF0838-BS1
Date Prepared: 06/19/2023
Nitrate + Nitrite, Total, as N
QC Sample ID: BXF0838-MS1
Date Prepared: 06/19/2023
Nitrate + Nitrite, Total, as N
QC Sample ID: BXF0838-MS2
Date Prepared: 06/19/2023
Nitrate + Nitrite, Total, as N
QC Sample ID: BXF0838-MSD1
Date Prepared: 06/19/2023
Nitrate + Nitrite, Total, as N
QC Sample ID: BXF0838-MSD2
Date Prepared: 06/19/2023
Nitrate + Nitrite, Total, as N
CtF WO#: 23F1372
www.ChemtechFord.com
QC Report for Work Order (WO) -23F1372
% Rec RPO Limits RPO Max Result Source Cone Spk Value MRL OF
Blank -EPA 353.2
Batch: BXF0838
Date Analyzed: 06/19/2023 Units: mg/L
ND 0.100 1.00
LCS -EPA 353.2
Batch: BXF0838
Date Analyzed: 06/19/2023 Units: mg/L
94.3 80 -120 1.89 2.00 0.100 1.00
Matrix Spike -EPA 353.2
Batch: BXF0838 QC Source Sample: XXXXXXX-XX
Date Analyzed: 06/19/2023 Units: mg/L
90.5 80 -120 3.70 2.79 1.00 0.100 1.00
Batch: BXF0838 QC Source Sample: 23Fl372-01
Date Analyzed: 06/19/2023 Units: mg/L
96.3 80 -120 7.35 6.38 1.00 0.100 1.00
Matrix Spike Dup -EPA 353.2
Batch: BXF0838 QC Source Sample: XXXXXXX-XX
Date Analyzed: 06/19/2023 Units: mg/L
93.4 0.782 80 -120 20 3.72 2.79 1.00 0.100 1.00
Batch: BXF0838 QC Source Sample: 23Fl372-01
Date Analyzed: 06/19/2023 Units: mg/L
86.3 1.37 80 -120 20 7.25 6.38 1.00 0.100 1.00
Page 18 of 24
QC Report for Work Order {WO) -23F1372
Analyte % Rec RPO Limits RPO Max Result Source Cone
Blank -EPA 8260D /5030A
QC Sample ID: BXF0825-BLK1 Batch: BXF0825
Date Prepared: 06/16/2023 Date Analyzed: 06/16/2023 Units: ug/L
Carbon Tetrachloride ND
Chloroform ND
Chloromethane ND
Methylene Chloride ND
QC Sample ID: BXF0880-BLK1 Batch: BXF0880
Date Prepared: 06/19/2023 Date Analyzed: 06/19/2023 Units: ug/L
Carbon Tetrachloride ND
Chloroform ND
Ch loromethane ND
J-LOW-L -Estimated low due to low recovery of LCS
Methylene Chloride ND
QC Sample ID: BXF0974-BLK1 Batch: BXF0974
Date Prepared: 06/2 l /2023 Date Analyzed: 06/21/2023 Units: ug/L
Carbon Tetrachloride ND
Chloroform ND
Chloromethane ND
Methylene Chloride ND
QC Sample ID: BXF0974-BLK2 Batch: BXF0974
Date Prepared: 06/21/2023 Date Analyzed: 06/21/2023 Units: ug/L
Carbon Tetrachloride ND
Chloroform ND
Chloromethane ND
Methylene Chloride ND
LCS -EPA 8260D /5030A
QC Sample ID: BXF0825-BS1 Batch: BXF0825
Date Prepared: 06/16/2023 Date Analyzed: 06/16/2023 Units: ug/L
Carbon Tetrachloride 131 70 -130 13.1
HB -Recovery for this parameter exceeded the upper acceptance limit. Associated sample(s) were all non-detect and
therefore accepted and reported for this parameter.
Chloroform 99.7 70 -130 9.97
Chloromethane 78.7 70 -130 7.87
Methylene Chloride 82.9 70-130 8.29
QC Sample ID: BXF0880-BS1 Batch: BXF0880
Date Prepared: 06/19/2023 Date Analyzed: 06/19/2023
Carbon Tetrachloride 97.5 70 -130 9.75
Chloroform 83.8 70 -130 8.38
Chloromethane 66.1 70 -130 6.61
J-LOW-L -Estimated low due to low recovery of LCS
Methylene Chloride 73.0 70-130 7.30
QC Sample ID: BXF0974-BS1 Batch: BXF0974
Date Prepared: 06/21/2023 Date Analyzed: 06/21/2023
Carbon Tetrachloride 119 70-130 11.9
Chloroform 91.8 70 -130 9.18
Chloromethane 101 70-130 10.1
Methylene Chloride 81 .6 70-130 8.16
Matrix Spike -EPA 8260D /5030A
CtF WO#: 23F1372
www.ChemtechFord.com
Units: ug/L
Units: ug/L
Spk Value MRL OF
1.0 1.00
1.0 1.00
1.0 1.00
1.0 1.00
1.0 1.00
1.0 1.00
1.0 1.00
1.0 1.00
1.0 1.00
1.0 1.00
1.0 1.00
1.0 1.00
1.0 1.00
1.0 1.00
1.0 1.00
1.0 1.00
10.0 1.0 1.00
10.0 1.0 1.00
10.0 1.0 1.00
10.0 1.0 1.00
10.0 1.0 1.00
10.0 1.0 1.00
10.0 1.0 1.00
10.0 1.0 1.00
10.0 1.0 1.00
10.0 1.0 1.00
10.0 1.0 1.00
10.0 1.0 1.00
Page 19 of 24
QC Report for Work Order (WO) -23F1372
Analyte % Rec RPO Limits RPO Max Result Source Cone Spk Value MRL OF
Matrix Spike -EPA 8260D /5030A (cont.)
QC Sample ID: BXF0825-MS1 Batch: BXF0825 QC Source Sample: XXXXXXX-XX
Date Prepared: 06/16/2023 Date Analyzed: 06/16/2023 Units: ug/L
Carbon Tetrachloride 121 70 -130 151 ND 125 12.5 1.00
Chloroform 93.7 70 -130 117 ND 125 12.5 1.00
Chloromethane 74.5 70 -130 93.1 ND 125 12.5 1.00
Methylene Chloride 77.7 70 -130 97.1 ND 125 12.5 1.00
QC Sample ID: BXF0880-MS1 Batch: BXF0880 QC Source Sample: XXXXXXX-XX
Date Prepared: 06/19/2023 Date Analyzed: 06/19/2023 Units: ug/L
Carbon Tetrachloride 113 70 -130 141 ND 125 12.5 1.00
Chloroform 95.7 70 -130 120 ND 125 12.5 1.00
Chloromethane 76.7 70 -130 95.9 ND 125 12.5 1.00
Methylene Chloride 83.5 70 -130 104 ND 125 12.5 1.00
QC Sample ID: BXF0974-MSI Batch: BXF0974 QC Source Sample: 23Fl372-0l
Date Prepared: 06/21/2023 Date Analyzed: 06/21/2023 Units: ug/L
Carbon Tetrachloride 103 70 -130 51.4 ND 50.0 5.0 1.00
Chloroform 87.1 70 -130 43.6 ND 50.0 5.0 1.00
Chloromethane 92.1 70 -130 46.0 ND 50.0 5.0 1.00
Methylene Chloride 77.0 70-130 38.5 ND 50.0 5.0 1.00
QC Sample ID: BXF0974-MS2 Batch: BXF0974 QC Source Sample: XXXXXXX-XX
Date Prepared: 06/21/2023 Date Analyzed: 06/21/2023 Units: ug/L
Carbon Tetrachloride 81.8 70 -130 2040 ND 2500 250 1.00
Chloroform 80.4 70 -130 2010 ND 2500 250 1.00
Chloromethane 71.2 70 -130 1780 ND 2500 250 1.00
Methylene Chloride 75.9 70 -130 1900 ND 2500 250 1.00
Matrix Spike Dup -EPA 8260D /5030A
QC Sample ID: BXF0825-MSD1 Batch: BXF0825 QC Source Sample: XXXXXXX-XX
Date Prepared: 06/16/2023 Date Analyzed: 06/16/2023 Units: ug/L
Carbon Tetrachloride 114 5.54 70 -130 20 143 ND 125 12.5 1.00
Chloroform 94.0 0.320 70 -130 20 118 ND 125 12.5 1.00
Chloromethane 76.6 2.78 70 -130 20 95.8 ND 125 12.5 1.00
Methylene Chloride 80.3 3.29 70 -130 20 100 ND 125 12.5 1.00
QC Sample ID: BXF0880-MSD1 Batch: BXF0880 QC Source Sample: XXXXXXX-XX
Date Prepared: 06/19/2023 Date Analyzed: 06/19/2023 Units: ug/L
Carbon Tetrachloride 110 2.88 70 -130 20 137 ND 125 12.5 1.00
Chloroform 96.2 0.521 70 -130 20 120 ND 125 12.5 1.00
Chloromethane 75.9 1.05 70 -130 20 94.9 ND 125 12.5 1.00
Methylene Chloride 84.6 1.31 70 -130 20 106 ND 125 12.5 1.00
QC Sample ID: BXF0974-MSD1 Batch: BXF0974 QC Source Sample: 23Fl372-0l
Date Prepared: 06/21/2023 Date Analyzed: 06/21/2023 Units: ug/L
Carbon Tetrachloride 99.2 3.47 70 -130 20 49.6 ND 50.0 5.0 1.00
Chloroform 84.4 3.15 70 -130 20 42.2 ND 50.0 5.0 1.00
Chloromethane 89.4 2.98 70 -130 20 44.7 ND 50.0 5.0 1.00
Methylene Chloride 75.0 2.63 70 -130 20 37.5 ND 50.0 5.0 1.00
QC Sample ID: BXF0974-MSD2 Batch: BXF0974 QC Source Sample: XXXXXXX-XX
Date Prepared: 06/2 l /2023 Date Analyzed: 06/2 l /2023 Units: ug/L
Carbon Tetrachloride 85.0 3.84 70-130 20 2120 ND 2500 250 1.00
Chloroform 82.3 2.34 70-130 20 2060 ND 2500 250 1.00
Chloromethane 73.5 3.18 70-130 20 1840 ND 2500 250 1.00
Methylene Chloride 76.4 0.657 70-130 20 1910 ND 2500 250 1.00
CtF WO#: 23F1372
www.ChemtechFord.com Page 20 of 24
Surrogates Report for Work Order (WO) -23F1372
QCID Analyte % Rec LCL UCL Result Spk Value Batch DF
Blank -EPA 8260D /5030A
BXF0825-BLK1 1,2-Dichloroethane-d4 108 64.2 126 10.8 10.0 BXF0825 1.00
BXF0825-BLK1 4-Bromofluorobenzene 95.2 71.4 125 9.52 10.0 BXF0825 1.00
BXF0825-BLK1 Toluene-dB 100 63.2 129 10.0 10.0 BXF0825 1.00
BXF0880-BLK1 1,2-Dichloroethane-d4 98.0 64.2 126 9.80 10.0 BXF0880 1.00
BXF0880-BLK1 4-Bromofluorobenzene 97.8 71.4 125 9.78 10.0 BXF0880 1.00
BXF0880-BLK1 Toluene-dB 100 63.2 129 10.0 10.0 BXF0880 1.00
BXF0974-BLK1 1,2-Dichloroethane-d4 96.3 64.2 126 9.63 10.0 BXF0974 1.00
BXF097 4-BLK2 1,2-Dichloroethane-d4 89.0 64.2 126 8.90 10.0 BXF0974 1.00
BXF097 4-BLK2 4-Bromofluorobenzene 95.3 71.4 125 9.53 10.0 BXF0974 1.00
BXF0974-BLK1 4-Bromofluorobenzene 94.7 71.4 125 9.47 10.0 BXF0974 1.00
BXF0974-BLK1 Toluene-dB 100 63.2 129 10.0 10.0 BXF0974 1.00
BXF097 4-BLK2 Toluene-dB 100 63.2 129 10.0 10.0 BXF0974 1.00
LCS -EPA 8260D /5030A
BXF0825-BS1 1,2-Dichloroethane-d4 104 64.2 126 10.4 10.0 BXF0825 1.00
BXF0825-BS 1 4-Bromofluorobenzene 96.9 71.4 125 9.69 10.0 BXF0825 1.00
BXF0825-BS1 Toluene-dB 93.6 63.2 129 9.36 10.0 BXF0825 1.00
BXF0880-BS 1 1,2-Dichloroethane-d4 98.7 64.2 126 9.87 10.0 BXF0880 1.00
BXF0880-BS1 4-Bromofluorobenzene 99.5 71.4 125 9.95 10.0 BXF0880 1.00
BXF0880-BS 1 Toluene-dB 95.7 63.2 129 9.57 10.0 BXF0880 1.00
BXF0974-BS1 1,2-Dichloroethane-d4 93.0 64.2 126 9.30 10.0 BXF0974 1.00
BXF097 4-8S 1 4-Bromofluorobenzene 98.5 71.4 125 9.85 10.0 BXF0974 1.00
BXF097 4-BS 1 Toluene-dB 100 63.2 129 10.0 10.0 BXF0974 1.00
Matrix Spike -EPA 8260D /5030A
BXF0825-MS1 1,2-Dichloroethane-d4 102 64.2 126 127 125 BXF0825 1.00
BXF0825-MS1 4-Bromofluorobenzene 98.3 71.4 125 123 125 BXF0825 1.00
BXF0825-MS1 Toluene-dB 100 63.2 129 125 125 BXF0825 1.00
BXF0880-MS 1 1,2-Dichloroethane-d4 96.9 64.2 126 121 125 BXF0880 1.00
BXF0880-MS 1 4-Bromofluorobenzene 99.3 71.4 125 124 125 BXF0880 1.00
BXF0880-MS 1 Toluene-dB 95.8 63.2 129 120 125 BXF0880 1.00
BXF097 4-MS2 1,2-Dichloroethane-d4 97.7 64.2 126 2440 2500 BXF0974 1.00
BXF097 4-MS 1 1,2-Dichloroethane-d4 86.0 64.2 126 43.0 50.0 BXF0974 1.00
BXF097 4-MS 1 4-Bromofluorobenzene 99.8 71.4 125 49.9 50.0 BXF0974 1.00
BXF097 4-MS2 4-Bromofluorobenzene 99.5 71.4 125 2490 2500 BXF0974 1.00
BXF0974-MS1 Toluene-dB 94.6 63.2 129 47.3 50.0 BXF0974 1.00
BXF097 4-MS2 Toluene-dB 100 63.2 129 2500 2500 BXF0974 1.00
Matrix Spike Dup -EPA 8260D /5030A
BXF0825-MSD1 1,2-Dichloroethane-d4 101 64.2 126 126 125 BXF0825 1.00
BXF0825-MSD1 4-Bromofluorobenzene 96.7 71.4 125 121 125 BXF0825 1.00
BXF0825-MSD1 Toluene-dB 94.3 63.2 129 118 125 BXF0825 1.00
BXF0880-MSD1 1,2-Dichloroethane-d4 95.3 64.2 126 119 125 BXF0880 1.00
BXF0880-MSD1 4-Bromofluorobenzene 100 71.4 125 125 125 BXF0880 1.00
BXF0880-MSD1 Toluene-dB 96.0 63.2 129 120 125 BXF0880 1.00
BXF0974-MSD1 1,2-Dichloroethane-d4 84.9 64.2 126 42.4 50.0 BXF0974 1.00
BXF097 4-MSD2 1,2-Dichloroethane-d4 96.7 64.2 126 2420 2500 BXF0974 1.00
BXF0974-MSD1 4-Bromofluorobenzene 99.5 71.4 125 49.8 50.0 BXF0974 1.00
CtF WO#: 23F1372
www.ChemtechFord.com Page 21 of 24
BXF0974-MSD2 4-Bromofluorobenzene
BXF0974-MSD2 Toluene-dB
BXF0974-MSD1 Toluene-dB
CtF WO#: 23F1372
www.ChemtechFord.com
Matrix Spike Dup -EPA 8260D /5030A (cont.)
96.4 71.4 125 2410
100 63.2 129 2500
100 63.2 129 50.0
2500 BXF0974 1.00
2500 BXF0974 1.00
50.0 BXF0974 1.00
Page 22 of 24
Surrogate Recoveries (Field Samples)
LabNumber Analyte
8260 Low Level Volatiles
23F1372-01 4-Bromofluorobenzene
23F1372-01 Toluene-dB
23F1372-01 1,2-Dichloroethane-d4
8260 Low Level Volatiles
23F1372-02 1,2-Dichloroethane-d4
23F1372-02 4-Bromofluorobenzene
23F1372-02 Toluene-dB
8260 Low Level Volatiles
23F1372-03 Toluene-dB
23F1372-03
23F1372-03
1,2-Dichloroethane-d4
4-Bromofluorobenzene
8260 Low Level Volatiles
23F1372-04 Toluene-dB
23F1372-04
23F1372-04
1,2-Dichloroethane-d4
4-Bromofluorobenzene
8260 Low Level Volatiles
23F1372-05 1,2-Dichloroethane-d4
23F1372-05
23F1372-05
4-Bromofluorobenzene
Toluene-dB
8260 Low Level Volatiles
23F1372-06 4-Bromofluorobenzene
23F1372-06
23F1372-06
1,2-Dichloroethane-d4
Toluene-dB
8260 Low Level Volatiles
23F1372-07 1,2-Dichloroethane-d4
23F1372-07
23F1372-07
Toluene-dB
4-Bromofluorobenzene
8260 Low Level Volatiles
23F1372-08 Toluene-dB
23F1372-08 1,2-Dichloroethane-d4
CtF WO#: 23F1372
www.ChemtechFord.com
Result
9.40
9.84
9.84
10.2
9.68
9.41
10.0
10.2
9.72
9.78
10.4
9.63
10.6
9.63
10.0
9.69
10.2
10.0
10.7
10.0
9.72
10.0
10.4
Spklvl
10.0
10.0
10.0
10.0
10.0
10.0
10.0
10.0
10.0
10.0
10.0
10.0
10.0
10.0
10.0
10.0
10.0
10.0
10.0
10.0
10.0
10.0
10.0
%Rec
94.0
98.4
98.4
102
96.8
94.1
100
102
97.2
97.8
104
96.3
106
96.3
100
96.9
102
100
107
100
97.2
100
104
LCL UCL Qualifier
71.4 125
63.2 129
64.2 126
64.2 126
71.4 125
63.2 129
63.2 129
64.2 126
71.4 125
63.2 129
64.2 126
71.4 125
64.2 126
71.4 125
63.2 129
71.4 125
64.2 126
63.2 129
64.2 126
63.2 129
71.4 125
63.2 129
64.2 126
Page 23 of 24
23F1372-08 4-Bromofluorobenzene
8260 Low Level Volatiles
23F1372-09 1,2-Dichloroethane-d4
23F1372-09
23F1372-09
4-Bromofluorobenzene
Toluene-dB
8260 Low Level Volatiles
23F1372-10 1,2-Dichloroethane-d4
23F1372-10
23F1372-10
4-Bromofluorobenzene
Toluene-dB
8260 Low Level Volatiles
23F1372-11 Toluene-dB
23F1372-11
23F1372-11
1,2-Dichloroethane-d4
4-Bromofluorobenzene
8260 Low Level Volatiles
23F1372-12 1,2-Dichloroethane-d4
23F1372-12
23F1372-12
4-Bromofluorobenzene
Toluene-dB
CtF WO#: 23F1372
www.ChemtechFord.com
9.66
10.3
9.72
10.0
9.70
9.66
9.35
10.0
9.54
9.88
9.98
9.82
9.35
10.0
10.0
10.0
10.0
10.0
10.0
10.0
10.0
10.0
10.0
10.0
10.0
10.0
96.6
103
97.2
100
97.0
96.6
93.5
100
95.4
98.8
99.8
98.2
93.5
71.4 125
64.2 126
71.4 125
63.2 129
64.2 126
71.4 125
63.2 129
63.2 129
64.2 126
71.4 125
64.2 126
71.4 125
63.2 129
Page 24 of 24
9632 South 500 West
CHEMTECH-FORD
l,\BO~o\TO;ilfS
6/30/2023
Work Order: 23F1815
Project: 2nd Quarter Chloroform 2023
Energy Fuels Resources, Inc.
Attn: Tanner Holliday
6425 South Highway 191
Blanding, UT 84511
Client Service Contact: 801.262. 7299
The analyses presented on this report were performed in accordance with the
National Environmental Laboratory Accreditation Program (NELAP) unless
noted in the comments, flags, or case narrative. If the report is to be used for
regulatory compliance, it should be presented in its entirety, and not be
altered.
Approved By:
Melissa Connolly, Project Manager
Sandy, Utah 84070 801.262.7299 Main 866.792.0093 Fax
Serving the lntermountain West since 1953
www.ChemtechFord.com
Page 1 of 34
I
CHEMTECH-FORD
LA.BO~ATORIES
Chemtech-Ford Laboratories
Serving the lntermountain West Since 1953
9632 South 500 West
Sandy, UT 84070
0:[phone] F: [phone]
www.ChemtechFord.com
Energy Fuels Resources, Inc.
Project: 2nd Quarter Chloroform 2023
Project Manager: Tanner Holliday
Laboratory ID Sam~le Name
23F1815-01 TW4-35 _ 06202023
23F1815-02 TW4-23_06202023
23F1815-03 TW4-38_06202023
23F1815-04 TW4-08R_06202023
23F1815-05 TW4-34_06202023
23F1815-06 TW4-06_06202023
23F1815-07 TW4-70_06202023
23F1815-08 TW4-27 _ 06212023
23F1815-09 TW4-09_06212023
23F1815-10 TW4-05_06212023
23F1815-11 TW4-08_06212023
23F1815-12 TW4-30_06212023
23F1815-13 TW4-33_06212023
23F1815-14 TW4-18_06212023
23F1815-15 TW4-16_06212023
23F1815-16 TW4-10_06212023
23F1815-17 TW4-29_06212023
23F1815-18 TW4-07_06212023
23F1815-19 TW4-26_06212023
23F1815-20 TW4-75_06212023
23F1815-21 Trip Blank
Sample Preparation
Work Order Report Narrative
All samples were prepared within method specified holding times. No preparation issues were noted.
Method Blanks
All blank values were within method acceptance criteria. No blank values exceeded the minimum reporting limit for any
analysis in this work order.
Laboratory Control Samples
All laboratory control samples were within method acceptance criteria.
Method Spikes
All method spike recoveries were within method acceptance criteria, except as noted by qualifying flags.
Method Spike Duplicates
All method spike duplicates were within method acceptance criteria, except as noted by qualifying flags.
Corrective Actions
There are no corrective actions associated with this work order.
Page 2 of 34
I
CHEMTECH-FORD
lABOAATORJES
Chemtech-Ford Laboratories
Serving the lntermountain West Since 1953
Certificate of Analysis
PO#:
9632 South 500 West
Sandy, UT 84070
0:[phone] F: [phone]
www.ChemtechFord.com
Energy Fuels Resources, Inc.
Tanner Holliday
6425 South Highway 191
Blanding, UT 84511
Receipt: 6/22/23 13:30@ -2.2 °C
Date Reported: 6/30/2023
Project Name: 2nd Quarter Chloroform 2023
Report Footnotes
Abbreviations
ND= Not detected at the corresponding Minimum Reporting Limit (MRL).
1 mg/L = one milligram per liter or I mg/kg= one milligram per kilogram = 1 part per million.
I ug/L = one microgram per liter or I ug/kg = one microgram per kilogram= I part per billion.
I ng/L = one nanogram per liter or I ng/kg = one nanogram per kilogram = I part per trillion.
Flag Descriptions
S-HB = Surrogate exceeds upper control limit. All associated analytes are non-detect and therefore accepted.
Proiect Name: 2nd Quarter Chloroform 2023
www.ChemtechFord.com
CtF WO#: 23F1815
Page 24 of 34
J
American West
Analytical Laboratories
463 W. 3600 S Sall Lake City. UT 84115
Phone# [phone] Tall Free# (888) 263-ll6B6
L~~ Fax# (801) 263-l!687 Email awal@awal-labs com
www.awal-labs.com
Client: Energy Fuels Resources, Inc.
Address: 6425 S. Hwy. 191
Blanding, UT 84511
Contact: Tanner Holliday
Phone#: [phone] Cell#:
Email: thoWday('!A'D,erafaels.com; KWeineY~energyfoels.com.
Project Name: 2nd Quarter Chloroform 2023
Project#:
PO#:
Sampler Name: Tanner Holliday
Date
Samole ID: Samoled
TW4-35_06202023 6/20/2023
TW4-23_06202023 6/20/2023
TW4-38_06202023 6/20/2023
TW4-08R_06202023 6/20/2023
TW4-34_06202023 6/20/2023
TW4-06_06202023 6/20/2023
TW4-70_06202023 6/20/2023
a
0
TW4-27_06212023
TW4-09_06212023
6/21/2023
6/21/2023
I TW4-05_06212023 6/21/2023
I TW4-08_06212023 6/21/2023
I TW4-30_06212023 6/21/2023
• TW4-33_06212023 6/21/2023
Ra•r,pshnd !Ir,...:) t.l JI / _ o ...
le-~nm:uro 1 -• ... • -1 ilq1/202J • TJmo;
?1inlNomo: TrilWH' Hall~., 1200
Rotinqi.<oh(l(I by< D:O'f'I)
ct...Muro
Tim•·
PtlntNM11:G
Ro4<nquj"1od by: om:,.
~""'UIO
limo-
Ptfnl N111n.,
Atlflnquohod by; Doto
,::u,,.ni'ltlll'O
Timo
F"rin!NM1fll
I
Time
Samoled
701
711
720
940
735
743
720
704
715
725
733
741
750
CHAIN OF CUSTODY
All analysls will be conducted using NELAP accredited methods and all data will be reported using AWAL's standard anelyte llsts and raporting
Umlts (POL) unless speciOcally requested otherwise on this Chain or Custody and/or aneched documentation
QC Level:
I
Tum Around Time: Unless other ermngements have been made,
~ned reports WII be smalled by 5:00 pm on
3 Standard lhe day lhey are due.
)( Include EDD:
LOCUS UPLOAD
EXCEL
Field Filtered For.
For Compllanco With:
1,3·r,s,s
AWAL Lab Sample Set #
Page 1 of 2
IDue D~te:
Laboratory Use Only
~w .. rrc
1 ~r hand delivered
2 ~onlotChllled
□ NELAP 3 Tompatn1uro -?-2--·c
□ RCRA
□ CWA • Received Brokanlleeking
□ SOWA (Improperly Sealed)
□ ELAPIA2LA y N
c' D NLLAP c.' c □ Non-Compliance 5 Properly Praoe,ved ~ 0 G' □ Other. y N "' Checked Bl bench ; " l2. .. 0 0 IQ y N C: ·c: (') ~ 1ii 0 0 ~ :::; 0 Known Hazards 0 Racelvod Wilth10
0 11!1 "' C..) ~ -~ • & Holdlng Tlma N u 0 E 0 u g y N .. Samele Comments "" rn 11!1
5 w X X X
sample Receipt~:P ri-0 '1.. vJl3) t 3\.t.\ I :--5 w X X X ~ [\) ,2qq I
5 w X X X vfCOC Complete Custody Seals
I 5 w X X X (/;Containers In tact (.-jSample Volume OK
6 w X X X
vfCOC/Labels Linked 5 w X X X ( ) Headspace Present (VOC) I
V)Received on Ice I
5 w X X X ( ) Temp Blank
5 w X X X 0 Correct Containers (--1Within Hold Time iO :--5 w X X X 0 COC Included Checked by: I 5 w X X X
5 w X X X
5 w X X X
5 w_ X l..,X7 -~
RO<O/YO<IO,,-// lsi.,""''"" ./ P'/ 0/llo: {g_/1.,. "1. '2-3 Special Instructions:
I"""'~.,,. l n t ,ff:;, /'). Time ~J, \,)
Received by: Oete: See the Anelyticel Scope or Work [or Reporting Limits and VOC
SlaoJllu,e anelyte list.
Tlme:
PrtotName.
Received by: Oate titb Sia.nature
llm• 11 ,~, 'ILl \/ a~ cr~i3 "6H\ Print Name:
Received by: Date:
Slanatu1e
Time:
Pr1ntName:
Page 25 of 34
I
American West
Analytical Laboratories
463 W _ 3600 S Salt Lake City. UT 84115
Phone# [phone] Toi Free# [phone]
CHAIN OF CUSTODY
Alf anatya(a 'MN be oondUded uatng NELAP accr8dlted methods and ell da1a wlll be reported usJng AWAL's standard analyte li!ts end reporting
llmtt11 (POL} uni-ipDdtbltr roquMtod ~"° on lhla Chatn of Custody and/or attached documentation
1:b·r \~ \ q
AWAL Lab Sample Set#
Page 2 of 2
#:~~ Fax# [phone] Email [e-mail] I QC Level: II TumAroundTlma: I Unlessothererrangementehavebeenmade, rue Date: I
signed repor1s will be emelled by 5:00 pm on www.awal-labs.com 3 Standard lhe day they are due.
Client: Energy Fuels Resources, Inc. K Include EDD: Laboratory Use Only
LOCUS UPLOAD
Addr85s: 6425 S. Hwy. l 9 l EXCEL ISempteaWIM'e:
Blan"'-s UT 84511 Field Filtered For.
-• 1--------------II 1 Shlppedorhandd91vara:t Contact: Tanner Holliday 2 Amblenl or Cllllled
For Compllance Wltll:
Phone#: [phone] Cell#: ___________ , b NELAP 3 T-·c
· D RCRA ---Email: tlloWda:,(a.-erafaela.com; KWdnet• eG<caf'lleh.com □ CWA ◄ RecelYed Broken/1.eakltlg
D SOWA (Improperly Sealed) Project Name: 2nd Quarter Chloroform 2023 0 ELAP I A2LA y N
= D NLLAP
Project#: ------------------------------• ~ ~ □ Non~ompliance 5 PropertyPrarerved ~c~ □Other. y N
PO#: ------------------------------! ~ ~ ~ ~ L-------------...II Chec:Md at bench ~ .>< o 10 V N Tanner Holliday . E t'l c "' Sampler Name: S ~ 0 o o:, K H d e Recet,ed Within 5 II:"'~ nown azars , <.) ID ...._ ~ • HokflngTim• Date Time c1. ('I ~ u &
Samole ID: Samoled Samoled ! ! i u g Samole Comments v N ,. 1 TW4-18_06212023 6/21/2023 804 5 W X X X
15 i TW4-16_06212023 6/21/2023 824 5 W X X X """TapoWao:
16 ; TW4-10_06212023 6/21/2023 830 5 W X X X 1 ~ono;:-Pacuga NA
11 ' TW4-29_06212023 6/21/2023 840 5 W X X X 2 UnbrokenonOtMrPldaQe
I TW4-07_06212023 6/21/2023 861 5 W X X X y N NA
I TW4-26_06212023 6/21/2023 901 5 W X X X 3 ~""""11on9:"pte NA
20 I TW4-76_06212023 6/21/2023 716 6 W X X X 4 Unbroken on Sample
I Trip Blanll: 6/20/2023 701 3 W X y N NA
22 ! B.,...Semple
2J ~ end COC Reoonl?
I y N
I
i 25
I 1-/7
Retlnquhihedby: -1 J/1 //_ ,f' _ el•: -odt,,; .,,. // , °"'·• t ~ 11,"Z. /.-1 "Z Special Instructions:
s1nna1..,, --1--"'"',<.._ l7i, i"~ 61211202' '"'"""''"" .,, #" __,,,.-'e I v7
/ Time: ~ ~,r ~I'!< ,-"\ nme, \ 'J 7,.,
Print Name: Tanner Hollldav ,.,rvi l'rlnt t~ · /""v{., V J ":)7v
RellnqUl"1ed by: Oele: R"""'Yed by: Dela: Sec the Analytical Scope of Work for Reporting Limits and voe
Slnoatur,, Slonelure 11I1alyte list.
Tim111: Time:
Prlrd Narne. Print Name:
Rallnqutehed by: Oats: R,ecetved tly: Oel•:
Slnnalun, ;Qin ...........
nme: Time:
Prlnt Name: :odnt Name.
Renr,quianaa Dy: DIile: Recetved by: OBte:
ca.. .. -.. e Stonah.n,
Time: Time:
P~ N.ama lPrt,-Na.me~
Page 26 of 34
Analyte
QC Sample ID: BXF1171-BLK1
Date Prepared: 06/26/2023
Chloride
QC Sample ID: BXF1171-BS1
Date Prepared: 06/26/2023
Chloride
QC Sample ID: BXFll 71-MSl
Date Prepared: 06/26/2023
Chloride
QC Sample ID: BXF1171-MS2
Date Prepared: 06/26/2023
Chloride
QC Sample ID: BXFl 171-MSDI
Date Prepared: 06/26/2023
Chloride
QC Sample ID: BXF1171-MSD2
Date Prepared: 06/26/2023
Chloride
CtF WO#: 23F1815
www.ChemtechFord.com
QC Report for Work Order (WO) -23F1815
%Rec RPO Limits RPO Max Result Source Cone Spk Value MRL OF
Blank -EPA 300.0
Batch: BXFl 171
Date Analyzed: 06/26/2023 Units: mg/L
ND 1.00 1.00
LCS -EPA 300.0
Batch: BXF 1171
Date Analyzed: 06/26/2023 Units: mg/L
98.4 90-110 49.2 50.0 1.00 1.00
Matrix Spike -EPA 300.0
Batch: BXF 1171 QC Source Sample: 23F1815-01
Date Analyzed: 06/26/2023 Units: mg/L
43.1 80 -120 34.6 29.8 11.1 1.11 1.00
Batch: BXFll 71 QC Source Sample: 23F1815-02
Date Analyzed: 06/26/2023 Units: mg/L
99.6 80 -120 62.4 51.3 11.1 1.11 1.00
Matrix Spike Dup -EPA 300.0
Batch: BXFl 171 QC Source Sample: 23F1815-01
Date Analyzed: 06/26/2023 Units: mg/L
27.7 5.09 80-120 20 32.9 29.8 11.1 1.11 1.00
Batch: BXFll 71 QC Source Sample: 23F1815-02
Date Analyzed: 06/27/2023 Units: mg/L
101 0.198 80-120 20 62.5 51.3 11.1 1.11 1.00
Page 27 of 34
Analyte
QC Sample ID: BXFI 179-BLKI
Date Prepared: 06/26/2023
Nitrate+ Nitrite, Total, as N
QC Sample ID: BXF1228-BLK1
Date Prepared: 06/27/2023
Nitrate + Nitrite, Total, as N
QC Sample ID: BXF1179-BSI
Date Prepared: 06/26/2023
Nitrate + Nitrite, Total, as N
QC Sample ID: BXF1228-BS1
Date Prepared: 06/27/2023
Nitrate + Nitrite, Total, as N
QC Sample ID: BXF1179-MS1
Date Prepared: 06/26/2023
Nitrate + Nitrite, Total, as N
QC Sample ID: BXF1179-MS2
Date Prepared: 06/26/2023
Nitrate + Nitrite, Total, as N
QC Sample ID: BXF1228-MS1
Date Prepared: 06/27/2023
Nitrate + Nitrite, Total, as N
QC Sample ID: BXF1228-MS2
Date Prepared: 06/27/2023
Nitrate + Nitrite, Total, as N
QC Sample ID: BXFll 79-MSDl
Date Prepared: 06/26/2023
Nitrate + Nitrite, Total, as N
QC Sample ID: BXF1179-MSD2
Date Prepared: 06/26/2023
Nitrate + Nitrite, Total, as N
QC Sample ID: BXF1228-MSDI
Date Prepared: 06/27/2023
Nitrate + Nitrite, Total, as N
QC Sample ID: BXF1228-MSD2
Date Prepared: 06/27/2023
Nitrate + Nitrite, Total, as N
CtF WO#: 23F1815
www.ChemtechFord.com
QC Report for Work Order (WO) -23F1815
% Rec RPD Limits RPD Max Result Source Cone Spk Value MRL DF
Blank -EPA 353.2
Batch: BXFl 179
Date Analyzed: 06/26/2023 Units: mg/L
ND 0.100 1.00
Batch: BXF1228
Date Analyzed: 06/27/2023 Units: mg/L
ND 0.100 1.00
LCS -EPA 353.2
Batch: BXFl 179
Date Analyzed: 06/26/2023 Units: mg/L
87.6 80 -120 1.75 2.00 0.100 1.00
Batch: BXF1228
Date Analyzed: 06/27/2023 Units: mg/L
91.2 80 -120 1.82 2.00 0.100 1.00
Matrix Spike -EPA 353.2
Batch: BXFl 179 QC Source Sample: 23Fl815-0l
Date Analyzed: 06/26/2023 Units: mg/L
82.1 80 -120 2.73 1.91 1.00 0.100 1.00
Batch: BXFll 79 QC Source Sample: 23F1815-02
Date Analyzed: 06/26/2023 Units: mg/L
88.5 80 -120 0.885 ND 1.00 0.100 1.00
Batch: BXF1228 QC Source Sample: XXXXXXX-XX
Date Analyzed: 06/27/2023 Units: mg/L
88.4 80 -120 0.884 ND 1.00 0.100 1.00
Batch: BXF1228 QC Source Sample: XXXXXXX-XX
Date Analyzed: 06/27/2023 Units: mg/L
95.0 80-120 6.10 5.15 1.00 0.500 5.00
Matrix Spike Dup -EPA 353.2
Batch: BXFl 179 QC Source Sample: 23F1815-0l
Date Analyzed: 06/26/2023 Units: mg/L
88.0 2,14 80 -120 20 2.79 1.91 1.00 0.100 1.00
Batch: BXFll 79 QC Source Sample: 23F1815-02
Date Analyzed: 06/26/2023 Units: mg/L
92.0 3.88 80 -120 20 0.920 ND 1.00 0.100 1.00
Batch: BXF1228 QC Source Sample: XXXXXXX-XX
Date Analyzed: 06/27/2023 Units: mg/L
90.6 2.46 80-120 20 0.906 ND 1.00 0.100 1.00
Batch: BXF1228 QC Source Sample: XXXXXXX-XX
Date Analyzed: 06/27/2023 Units: mg/L
94.6 0.0656 80 -120 20 6.10 5.15 1.00 0.500 5.00
Page 28 of 34
QC Report for Work Order (WO) -23F1815
Analyte % Rec RPO Limits RPO Max Result Source Cone Spk Value MRL OF
Blank -EPA 8260D /5030A
QC Sample ID: BXF1214-BLKI Batch: BXF1214
Date Prepared: 06/26/2023 Date Analyzed: 06/26/2023 Units: ug/L
Carbon Tetrachloride ND 1.0 1.00
Chloroform ND 1.0 1.00
Chloromethane ND 1.0 1.00
Methylene Chloride ND 1.0 1.00
QC Sample ID: BXF1280-BLK1 Batch: BXF1280
Date Prepared: 06/27/2023 Date Analyzed: 06/27/2023 Units: ug/L
Carbon Tetrachloride ND 1.0 1.00
Chloroform ND 1.0 1.00
Chloromethane ND 1.0 1.00
Methylene Chloride ND 1.0 1.00
LCS -EPA 8260D /5030A
QC Sample ID: BXF1214-BS1 Batch: BXF1214
Date Prepared: 06/26/2023 Date Analyzed: 06/26/2023 Units: ug/L
Carbon Tetrachloride 95.2 70 -130 9.52 10.0 1.0 1.00
Chloroform 90.8 70-130 9.08 10.0 1.0 1.00
Chloromethane 84.5 70 -130 8.45 10.0 1.0 1.00
Methylene Chloride 88.6 70-130 8.86 10.0 1.0 1.00
QC Sample ID: BXF1280-BS1 Batch: BXF1280
Date Prepared: 06/27/2023 Date Analyzed: 06/27/2023 Units: ug/L
Carbon Tetrachloride 99.3 70-130 9.93 10.0 1.0 1.00
Chloroform 97.6 70-130 9.76 10.0 1.0 1.00
Chloromethane 91.5 70-130 9.15 10.0 1.0 1.00
Methylene Chloride 94.9 70-130 9.49 10.0 1.0 1.00
Matrix Spike -EPA 8260D /5030A
QC Sample ID: BXF1214-MSI Batch: BXF1214 QC Source Sample: 23Fl815-0l
Date Prepared: 06/26/2023 Date Analyzed: 06/26/2023 Units: ug/L
Carbon Tetrachloride 106 70 -130 52.8 ND 50.0 5.0 1.00
Chloroform 99.7 70 -130 49.8 ND 50.0 5.0 1.00
Chloromethane 86.6 70 -130 43.3 ND 50.0 5.0 1.00
Methylene Chloride 95.5 70 -130 47.8 ND 50.0 5.0 1.00
QC Sample ID: BXF1280-MS1 Batch: BXF1280 QC Source Sample: XXXXXXX-XX
Date Prepared: 06/27/2023 Date Analyzed: 06/27/2023 Units: ug/L
Carbon Tetrachloride 91.1 70 -130 45.6 ND 50,0 5.0 1.00
Chloroform 92.7 70 -130 46.4 ND 50.0 5.0 1.00
Chloromethane 81 .0 70 -130 40.5 ND 50.0 5.0 1.00
Methylene Chloride 87.9 70 -130 44.0 ND 50.0 5.0 1.00
Matrix Spike Dup -EPA 8260D /5030A
QC Sample ID: BXFI214-MSD1 Batch: BXF1214 QC Source Sample: 23F1815-01
Date Prepared: 06/26/2023 Date Analyzed: 06/26/2023 Units: ug/L
Carbon Tetrachloride 103 2.11 70 -130 20 51.7 ND 50.0 5.0 1.00
Chloroform 102 2.38 70 -130 20 51.0 ND 50.0 5.0 1.00
Chloromethane 92.6 6.70 70-130 20 46.3 ND 50.0 5.0 1.00
Methylene Chloride 98.0 2.58 70 -130 20 49.0 ND 50.0 5.0 1.00
QC Sample ID: BXF1280-MSD1 Batch: BXF1280 QC Source Sample: XXXXXXX-XX
Date Prepared: 06/27/2023 Date Analyzed: 06/27/2023 Units: ug/L
Carbon Tetrachloride 90.9 0.220 70-130 20 45.4 ND 50.0 5.0 1.00
Chloroform 91.6 1.19 70 -130 20 45.8 ND 50.0 5.0 1.00
CtF WO#: 23F1815
www.ChemtechFord.com Page 29 of 34
Analyte
QC Sample ID: BXF1280-MSD1
Date Prepared: 06/27/2023
Chloromethane
Methylene Chloride
CtF WO#: 23F1815
www.ChemtechFord.com
QC Report for Work Order (WO) -23F1815
%Rec RPO Limits RPO Max Result Source Cone
Matrix Spike Dup -EPA 8260D /5030A (cont.)
Batch: BXF1280 QC Source Sample: XXXXXXX-XX
Date Analyzed: 06/27/2023 Units: ug/L
82.9 2.32 70 -130 20 41.4 ND
88.4 0.567 70 -130 20 44.2 ND
Spk Value MRL OF
50.0 5.0 1.00
50.0 5.0 1.00
Page 30 of 34
Surrogates Report for Work Order {WO) -23F1815
QCID Analyte % Rec LCL UCL Result Spk Value
Blank -EPA 8260D /5030A
BXF1214-BLK1 1,2-Dichloroethane-d4 93.8 64.2 126 9.38 10.0
BXF1214-BLK1 4-Bromofluorobenzene 133 71.4 125 13.3 10.0
S-HB -Surrogate exceeds upper control limit. All associated analytes are non-detect and therefore accepted.
BXF1214-BLK1 Toluene-dB 99.5 63.2 129 9.95 10.0
BXF 1280-BLK 1 1,2-Dichloroethane-d4 92.4 64.2 126 9.24 10.0
BXF1280-BLK1 4-B romofl uorobenze ne 141 71.4 125 14.1 10.0
S-HB -Surrogate exceeds upper control limit. All associated analytes are non-detect and therefore accepted.
BXF 1280-BLK 1 Toluene-dB
BXF1214-BS1 1,2-Dichloroethane-d4
BXF1214-BS1 4-Bromofluorobenzene
BXF1214-BS1 Toluene-dB
BXF1280-BS1 1,2-Dichloroethane-d4
BXF 1280-BS 1 4-Bromofluorobenzene
BXF1280-BS1 Toluene-dB
BXF1214-MS1 1,2-Dichloroethane-d4
BXF1214-MS1 4-Bromofluorobenzene
BXF1214-MS1 Toluene-dB
BXF1280-MS1 1,2-Dichloroethane-d4
BXF1280-MS1 4-Bromofluorobenzene
BXF1280-MS1 Toluene-dB
BXF1214-MSD1 1,2-Dichloroethane-d4
BXF1214-MSD1 4-Bromofluorobenzene
BXF1214-MSD1 Toluene-dB
BXF1280-MSD1 1,2-Dichloroethane-d4
BXF1280-MSD1 4-Bromofluorobenzene
BXF1280-MSD1 Toluene-dB
CtF WO#: 23F1815
www.ChemtechFord.com
98.8 63.2 129 9.88 10.0
LCS -EPA 8260D /5030A
99.7 64.2 126 9.97 10.0
101 71.4 125 10.1 10.0
100 63.2 129 10.0 10.0
93.4 64.2 126 9.34 10.0
98.2 71.4 125 9.82 10.0
100 63.2 129 10.0 10.0
Matrix Spike -EPA 8260D /5030A
98.2 64.2 126 49.1 50.0
97.8 71.4 125 48.9 50.0
101 63.2 129 50.7 50.0
93.7 64.2 126 46.8 50.0
97.6 71.4 125 48.8 50.0
100 63.2 129 50.2 50.0
Matrix Spike Dup -EPA 8260D /5030A
95.8 64.2 126 47.9 50.0
96.7 71.4 125 48.4 50.0
100 63.2 129 50.0 50.0
95.8 64.2 126 47.9 50.0
98.4 71.4 125 49.2 50.0
101 63.2 129 50.6 50.0
Batch DF
BXF1214 1.00
BXF1214 1.00
BXF1214 1.00
BXF1280 1.00
BXF1280 1.00
BXF1280 1.00
BXF1214 1.00
BXF1214 1.00
BXF1214 1.00
BXF1280 1.00
BXF1280 1.00
BXF1280 1.00
BXF1214 1.00
BXF1214 1.00
BXF1214 1.00
BXF1280 1.00
BXF1280 1.00
BXF1280 1.00
BXF1214 1.00
BXF1214 1.00
BXF1214 1.00
BXF1280 1.00
BXF1280 1.00
BXF1280 1.00
Page 31 of 34
Surrogate Recoveries (Field Samples)
LabNumber Analyte
8260 Low Level Volatiles
23F1815-01 4-Bromofluorobenzene
23F1815-01 Toluene-dB
23F1815-01 1,2-Dichloroethane-d4
8260 Low Level Volatiles
23F1815-02 1,2-Dichloroethane-d4
23F1815-02 4-Bromofluorobenzene
23F1815-02 Toluene-dB
8260 Low Level Volatiles
23F1815-03 1,2-Dichloroethane-d4
23F1815-03
23F1815-03
4-Bromofluorobenzene
Toluene-dB
8260 Low Level Volatiles
23F1815-04 1,2-Dichloroethane-d4
23F1815-04
23F1815-04
4-Bromofluorobenzene
Toluene-dB
8260 Low Level Volatiles
23F1815-05 Toluene-dB
23F1815-05
23F1815-05
1,2-Dichloroethane-d4
4-Bromofluorobenzene
8260 Low Level Volatiles
23F1815-06 Toluene-dB
23F1815-06
23F1815-06
1,2-Dichloroethane-d4
4-Bromofluorobenzene
8260 Low Level Volatiles
23F1815-07 4-Bromofluorobenzene
23F1815-07 Toluene-dB
23F1815-07 1,2-Dichloroethane-d4
8260 Low Level Volatiles
23F1815-08 Toluene-dB
23F1815-08 1 ,2-Dichloroethane-d4
CtF WO#: 23F1815
www.ChemtechFord.com
Result
13.2
10.1
9.58
9.25
13.0
10.0
9.59
13.1
10.0
9.55
13.6
10.0
10.0
9.53
13.4
10.0
9.52
13.2
13.1
10.0
9.78
10.1
9.59
SpkLvl
10.0
10.0
10.0
10.0
10.0
10.0
10.0
10.0
10.0
10.0
10.0
10.0
10.0
10.0
10.0
10.0
10.0
10.0
10.0
10.0
10.0
10.0
10.0
%Rec
132
101
95.8
92.5
130
100
95.9
131
100
95.5
136
100
100
95.3
134
100
95.2
132
131
100
97.8
101
95.9
LCL UCL Qualifier
71.4 125 S-HB
63.2 129
64.2 126
64.2 126
71.4 125 S-HB
63.2 129
64.2 126
71.4 125 S-HB
63.2 129
64.2 126
71.4 125 S-HB
63.2 129
63.2 129
64.2 126
71.4 125 S-HB
63.2 129
64.2 126
71.4 125 S-HB
71.4 125 S-HB
63.2 129
64.2 126
63.2 129
64.2 126
Page 32 of 34
23F1815-08 4-Bromofluorobenzene
8260 Low Level Volatiles
23F1815-09 Toluene-dB
23F1815-09
23F1815-09
4-8 romofl uorobenzene
1,2-Dichloroethane-d4
8260 Low Level Volatiles
23F1815-10 4-Bromofluorobenzene
23F1815-10
23F1815-10
1,2-Dichloroethane-d4
Toluene-dB
8260 Low Level Volatiles
23F1815-11 1,2-Dichloroethane-d4
23F1815-11
23F1815-11
Toluene-dB
4-Bromofluorobenzene
8260 Low Level Volatiles
23F1815-12 4-Bromofluorobenzene
23F1815-12
23F1815-12
1,2-Dichloroethane-d4
Toluene-dB
8260 Low Level Volatiles
23F1815-13 1,2-Dichloroethane-d4
23F1815-13
23F1815-13
4-Bromofluorobenzene
Toluene-dB
8260 Low Level Volatiles
23F1815-14 4-Bromofluorobenzene
23F1815-14
23F1815-14
Toluene-dB
1,2-Dichloroethane-d4
8260 Low Level Volatiles
23F1815-15 1,2-Dichloroethane-d4
23F1815-15
23F1815-15
4-Bromofluorobenzene
Toluene-dB
8260 Low Level Volatiles
23F1815-16 Toluene-dB
23F1815-16
23F1815-16
4-Bromofluorobenzene
1,2-Dichloroethane-d4
CtF WO#: 23F1815
www.ChemtechFord.com
13.3
10.1
13.0
9.70
12.9
9.85
10.0
9.57
10.0
13.1
13.7
9.92
10.0
9.77
13.4
10.1
13.6
10.0
9.79
9.63
13.8
10.0
10.0
12.9
9.81
10.0
10.0
10.0
10.0
10.0
10.0
10.0
10.0
10.0
10.0
10.0
10.0
10.0
10.0
10.0
10.0
10.0
10.0
10.0
10.0
10.0
10.0
10.0
10.0
10.0
133
101
130
97.0
129
98.5
100
95.7
100
131
137
99.2
100
97.7
134
101
136
100
97.9
96.3
138
100
100
129
98.1
71.4 125 S-HB
63.2 129
71.4 125 S-HB
64.2 126
71.4 125 S-HB
64.2 126
63.2 129
64.2 126
63.2 129
71.4 125 S-HB
71.4 125 S-HB
64.2 126
63.2 129
64.2 126
71.4 125 S-HB
63.2 129
71.4 125 S-HB
63.2 129
64.2 126
64.2 126
71.4 125 S-HB
63.2 129
63.2 129
71.4 125 S-HB
64.2 126
Page 33 of 34
8260 Low Level Volatiles
23F1815-17 1,2-Dichloroethane-d4
23F1815-17
23F1815-17
4-Bromofluorobenzene
Toluene-dB
8260 Low Level Volatiles
23F1815-18 1,2-Dichloroethane-d4
23F1815-18
23F1815-18
4-Bromofluorobenzene
Toluene-dB
8260 Low Level Volatiles
23F1815-19 Toluene-dB
23F1815-19
23F1815-19
4-Bromofluorobenzene
1 ,2-Dichloroethane-d4
8260 Low Level Volatiles
23F1815-20 Toluene-dB
23F1815-20
23F1815-20
1,2-Dichloroethane-d4
4-Bromofluorobenzene
8260 Low Level Volatiles
23F1815-21 Toluene-dB
23F1815-21
23F1815-21
1,2-Dichloroethane-d4
4-Bromofluorobenzene
CtF WO#: 23F1815
www.ChemtechFord.com
10.2
12.9
10.0
10.1
11.9
10.0
9.99
11.9
10.4
10.0
9.52
13.5
9.95
9.12
13.7
10.0
10.0
10.0
10.0
10.0
10.0
10.0
10.0
10.0
10.0
10.0
10.0
10.0
10.0
10.0
102
129
100
101
119
100
99.9
119
104
100
95.2
135
99.5
91.2
137
64.2 126
71.4 125 S-HB
63.2 129
64.2 126
71.4 125
63.2 129
63.2 129
71.4 125
64.2 126
63.2 129
64.2 126
71.4 125 S-HB
63.2 129
64.2 126
71.4 125 S-HB
Page 34 of 34
Tab I
Quality Assurance and Data Validation Tables
1-1: Field QA/QC Evaluation
1x Casing 2x Casing
Location Volume Volume Pumped Volume Volume Check Conductivity RPD pH RPD Temperature RPD Redox RPD Turbidity
MW-04 NA Continuously Pumped well --1918 NC 7.06 NC 15.61 NC 206
TW4-01 NA eontinuously, Pumped well -2311 NC 7.28 NC 16.02 NC 216
TW4-02 NA G.ontinuously Pl,lmped well -3930 NC 7.01 NC 16.10 NG 225
TW'A-03 48.66 66.0Q--97.32 Pumped Dry 1:820 1823 ,0.16 6,58 6.60' 0.30 16:6§• 1Q.72 0.42· NM
TW4-04 NA eontinuously Pumped well -2385 NC 7.25 NC 16.40 NC 227
TW4-05 31.70 77.00 63.4 okay 1552 1539 0.84 6.88 6.87 0.15 15.42 15.41 0.06 213 220
1W4-06 12.J;8 1.3,75 25.16 Rump:eJfDry 3833 ,38;&4 0.03 6.57 6.58 0.15 14.5 7 14.56 0.07 NM
iM.J4-07 25.0'0 55.0(:) 50 PumJ;>e..d Dry 13>7~ 1384 0.65 .7. f 9, 7.1 9 0.00 14.88 14.91 0.20 NM
TW4-08 26.74 66.00 53.48 okay 4530 4529 0.02 6.61 6.61 0.00 15.1 5 15.15 0.00 222 227
TW4-09 31.83 77.00 63.66 okay 2470 2462 0.32 6.68 6.68 0.00 15.09 15.08 0.07 223 227
TW~10 27'.7'6 3!H l0~ 55.52 Pumped Qry 2472 ;24$_5 0.j 2 6.67 6.67 0.00 14.7~ 14_.72 0.27 NM
TW4-11 NA G.0ntinuous1y Pumped well -3706 NC 7.08 NC 17.20 NC 213
1W4-1 2' 30.35 l 6.66 60.7 Rum~e<f Dry 1542 1545 0.19 7..11 1.1, -0.28 14.36 14.40 0.28 NM
liW<i:-13, 31.34 40.33 62.68' PumJ:)ed Dry 2053· ~059 029 7.11 7.13 0.28 14.10 14.14 0.28 NM
TW4,14 11 .61 14.6Q 23.22 PumJ;>ed Dry 51·89 51 90 0.02 6.30 6.29 0.16 f 4.3U 14.35 0.35 NM
MW-26 NA Continu0usly Pumped well -3495 NC 7.04 NC 15.97 NC 228
TW4-16 47.48 11 0.00 94.96 okay 3523 3631 3.02 6.54 6.56 0.31 14.96 14.94 0.13 282 275
MW-32 31.05 65.10 62.1 okay 3575 3580 0.14 6.54 6.53 0.15 16.05 16.04 0.06 300 299
lW4-1 8 40.74 88.00 81.48 okay 2071 2050 1.02 6.42 6.42 0.00 15.55 15.55 0.00 273 276
TW4-19 NA Continuously Pumpecl well -2670 NC 6.74 NC 17.01 NC 169
lW4-21 NA Continuously Pumped well --2985 NC 7.04 NC 16.10 NC 372
TW4-22 NA Continuousl9 Pumped well --5970 Ne 6.71 NC 15.10 NC 363
lW4-23 25.8 1 77.00 51.62 okay 3421 3400 0.62 6.81 6.80 0.15 14.82 14.69 0.88 160 163
TW4-24 NA Continuously Pumped well -8444 NC 6.96 NC 14.90 NC 330
TW4-25 NA Continuously Pumped well -2426 NC 7.29 NC 14.82 NC 326
TW4-2.6 8.09, 8.25 16.18 PumJ:)ed Dry ~7~·5 47,40 0.08· 6.81 !,.80 0.15 14.94 14.l:)O 0.2'7 NM
TW4-27i 10.7'4 11.00; 21 .48 Pumped Dry 4872 4888, 0.33 6.20 6.21 0.1'6 16.25 16.27 0.12 NM
TW4-28 3$..02 49:50 76.04 Pur:nJ;>ed D.cy 1q38 1545 0.45 7.fO 7.12 0.28 14;20, 142 3 Q.21 NM
TW4:-29 9.72 8.25 19.44 PumJ;>e~ Dry 3~29 3940 0.28 6.97 6.9~ 0.14 14.95 14.98 0.20 NM rw4.,,.ao 11 .83 14.66 2~.66 Rumped Di'¥ 440-1 44~0 0.02 6'.00 6.03 0.5!) 15.39 1q,2-6 0.26 NM
TW4-l1 20.50 22.0 41 F?.un}f)ed !Dry :3'6Q4 ?610 0.17 6.80 6.79 0.15 14.55 14,58 0 .. 21 NM
TW4-32 37.42 77.00 74.84 okay 5945 5870 1.27 4.28 4.27 0.23 15.08 15.05 0.20 418 430
TWA-33 4.44 3:66 8.88 Purnp!:lifl:>r,y 4720 4722 0.04 7.04 -7.0!;, 0.14 f 4.86 14.85 0.07 NM
'TW4';.3A' 11.69 1'!1-.66 2a·,38 Pum1:1ed Dry 3737 374(11 0.08 6.84 6.~!il 0.2~ 14.60 14.58 0.14 NM
liW4,35 6.91 7.33 13.~2 !?umped Qry, 4314 431/l Q.09 6.40 6.43 0.41 1p.10 16.0.8 0.12 NM
TW4'36 26.51 33.00 53.02 !?umped rary,: 2503 2520 0.68 6.80 6.81 0.15 14.39 14.41 0.14 NM
TW4-37 NA Conttnuously Pumped well -4891 NC 6.50 NC 15.20 NC 421
TW4-38 34.62 77.00 69.24 okay 1790 1777 0.73 6.79 6.76 0.44 14.99 14.96 0.20 209 216
lW4-39 NA Continuously Pumped well --2204 NC 7.06 NC 16.40 NC 201
TW4-40 NA Continuously Pumped well .. 4135 NC 7.10 NC 15.78 NC 237
lW4-41 NA Continu~usly Pumped well --2700' NC 7.30 NC 17.05 NC 229
TW4421 9.53 11.00 19.06 !?umped 01'¥ 3§74 36:Y,8: 0,11 7.20 7.21 0.14 14.65 14.61 0.27 NM -
lW4-43 14.49 22.00 28.98 Pumped l#ry 3588 3586 0.06 6.80 6.78 0.29 14.96 15.00 0.27 NM
MW-04,MW-26, TW4-01 , TW4-02, TW4-04, lW4-11, TW4-19, TW4-21, TW4-22, lW4-24, TW4-25, TW4-37, TW4-39, TW4-40, TW4-41 are continually pumped wells.
lW4-03, TW4-06, lW4-07, lW4-10, lW4-12, TW4-13, TW4-14, lW4-26, TW4-27, TW4-28, TW4-29, TW4-30, TW4-31, TW4-33, TW4-34, TW4-35, TW4-36, TW4-42, TW4-43 were pumped dry and sampled after recovery.
NM = Not Measured. The QAP does not require the measurement of redox potential or turbidity in wells that were purged to dryness.
RPO = Relative Percent Difference
NC 1.3
NC 0
NC 2.0
NC NM
NC 0
3.23 4.8
NC NM
Ne NM
2.23 4.7
1.78 11.0
NC NM
NC 0
NC NM
NC NM
NC NM
NC 1.9
2.51 11.0
0.33 4.9
1.09 22.0
Ne 4.0
NC 3.0
NC 0
1.86 9.0
NC 2.0
NG 0
NC NM
NC NM
NC NM
NG NM
NC NM
NG NM
2.83 16.0
NC NM
NC NM
NC NM
NC NM
NC 0
3.29 6.5
NC 1.5
t-tc 0
NC 1.0
NC NM
NC NM
The QAP states that turbidity should be less than 5 Nephelometric Turbidity Units ("NTU") prior to sampling unless the well is characterized by water that has a higher turbidity. The OAP does not require that turbidity measurements be less than 5 NTU prior to
sampling. As such, the noted observations regarding turbidity measurements less than 5 NTU are included for information purposes only.
4.8
4.6
11 .0
11 .1
5.0
22.3
9.0
15.0
6.7
RPD Dissolved Oxygen RPD
NC 40.0 NC
NC 83.7 NC
NC 8..4.9 NC t)Je NM Ne
NC 98.0 NC
0.00 55.0 55.0 0.00
NC NM t!Je
NC NM NC
2.15 2.3 2.3 0.00
0.00 1.0 1.0 0.00
NG NM NC
NC 93.0 NC
NC NM NC
NC NM NG
NC Nlli1 NC
NC 36.2 NC
0.90 12.0 12.1 0.83
2.02 33.4 34.0 1.78
1.35 9.7 9.8 1.03
NC 24.0 NC
NC 100.0 NC
NG 92.0 NG
0.00 58.0 59.0 1.71
NC 32.3 NC
NC 29.0 NC
NC NM NC
NG NM N~
NG NM we
NC NM N€"
NC NM NC
NC NM Ne
6.45 0 0 0.00
N"€ NM NC
NC NM NC
NC NM NG
NC NM NC
NC 68.6 NC
3.03 70.0 71.0 1.42
NC 49.0 NC
NC 72.9 NC
NC 99.8 NC
NC NM Ne. -NC NM NC
1-2: Holding Time Evaluation
Hold Time Allowed Hold Hold Time
Location ID Parameter Name Sample Date Analysis Date (Days) Time (Days) Check
Trip Blank Carbon Tetrachloride 06/13/2023 06/15/2023 2 14 OK
Trip Blank Chloroform 06/13/2023 06/15/2023 2 14 OK
Trip Blank Chloromethane 06/13/2023 06/15/2023 2 14 OK
Trip Blank Methylene Chloride 06/13/2023 06/15/2023 2 14 OK
Trip Blank Carbon Tetrachloride 06/15/2023 06/19/2023 4 14 OK
Trip Blank Chloroform 06/15/2023 06/19/2023 4 14 OK
Trip Blank Chloromethane 06/15/2023 06/19/2023 4 14 OK
Trip Blank Methylene Chloride 06/15/2023 06/19/2023 4 14 OK
Trip Blank Carbon Tetrachloride 06/20/2023 06/26/2023 6 14 OK
Trip Blank Chloroform 06/20/2023 06/26/2023 6 14 OK
Trip Blank Chloromethane 06/20/2023 06/26/2023 6 14 OK
Trip Blank Methylene Chloride 06/20/2023 06/26/2023 6 14 OK
MW-04 Chloride 06/13/2023 06/19/2023 6 28 OK
MW-04 Carbon Tetrachloride 06/13/2023 06/15/2023 2 14 OK
MW-04 Chloroform 06/13/2023 06/15/2023 2 14 OK
MW-04 Chloromethane 06/13/2023 06/15/2023 2 14 OK
MW-04 Methylene Chloride 06/13/2023 06/15/2023 2 14 OK
MW-04 Nitrate+ Nitrite as N 06/13/2023 06/19/2023 6 28 OK
TW4-0l Chloride 06/13/2023 06/19/2023 6 28 OK
TW4-0l Carbon Tetrachloride 06/13/2023 06/15/2023 2 14 OK
TW4-0l Chloroform 06/13/2023 06/15/2023 2 14 OK
TW4-0l Chloromethane 06/13/2023 06/15/2023 2 14 OK
TW4-0l Methylene Chloride 06/13/2023 06/15/2023 2 14 OK
TW4-0l Nitrate+ Nitrite as N 06/13/2023 06/19/2023 6 28 OK
TW4-02 Chloride 06/13/2023 06/19/2023 6 28 OK
TW4-02 Carbon Tetrachloride 06/13/2023 06/15/2023 2 14 OK
TW4-02 Chloroform 06/13/2023 06/15/2023 2 14 OK
TW4-02 Chloromethane 06/13/2023 06/15/2023 2 14 OK
TW4-02 Methylene Chloride 06/13/2023 06/15/2023 2 14 OK
TW4-02 Nitrate+ Nitrite as N 06/13/2023 06/19/2023 6 28 OK
TW4-03 Chloride 06/15/2023 06/20/2023 5 28 OK
TW4-03 Carbon Tetrachloride 06/15/2023 06/21/2023 6 14 OK
TW4-03 Chloroform 06/15/2023 06/21/2023 6 14 OK
TW4-03 Chloromethane 06/15/2023 06/21/2023 6 14 OK
TW4-03 Methylene Chloride 06/15/2023 06/21/2023 6 14 OK
TW4-03 Nitrate+ Nitrite as N 06/15/2023 06/19/2023 4 28 OK
TW4-03R Chloride 06/14/2023 06/20/2023 6 28 OK
TW4-03R Carbon Tetrachloride 06/14/2023 06/16/2023 2 14 OK
TW4-03R Chloroform 06/14/2023 06/16/2023 2 14 OK
TW4-03R Chloromethane 06/14/2023 06/16/2023 2 14 OK
TW4-03R Methylene Chloride 06/14/2023 06/16/2023 2 14 OK
TW4-03R Nitrate+ Nitrite as N 06/14/2023 06/19/2023 5 28 OK
TW4-04 Chloride 06/13/2023 06/19/2023 6 28 OK
TW4-04 Carbon Tetrachloride 06/13/2023 06/15/2023 2 14 OK
TW4-04 Chloroform 06/13/2023 06/15/2023 2 14 OK
TW4-04 Chloromethane 06/13/2023 . 06/15/2023 2 14 OK
TW4-04 Methylene Chloride 06/13/2023 06/15/2023 2 14 OK
TW4-04 Nitrate + Nitrite as N 06/13/2023 06/19/2023 6 28 OK
TW4-05 Chloride 06/21/2023 06/27/2023 6 28 OK
TW4-05 Carbon Tetrachloride 06/21/2023 06/26/2023 5 14 OK
TW4-05 Chloroform 06/21/2023 06/26/2023 5 14 OK
TW4-05 Chloromethane 06/21/2023 06/26/2023 5 14 OK
TW4-05 Methylene Chloride 06/21/2023 06/26/2023 5 14 OK
1-2: Holding Time Evaluation
Hold Time Allowed Hold Hold Time
Location ID Parameter Name Sample Date Analysis Date (Days) Time (Days) Check
TW4-05 Nitrate + Nitrite as N 06/21/2023 06/26/2023 5 28 OK
TW4-06 Chloride 06/20/2023 06/27/2023 7 28 OK
TW4-06 Carbon Tetrachloride 06/20/2023 06/26/2023 6 14 OK
TW4-06 Chloroform 06/20/2023 06/26/2023 6 14 OK
TW4-06 Chloromethane 06/20/2023 06/26/2023 6 14 OK
TW4-06 Methylene Chloride 06/20/2023 06/26/2023 6 14 OK
TW4-06 Nitrate+ Nitrite as N 06/20/2023 06/26/2023 6 28 OK
TW4-07 Chloride 06/21/2023 06/27/2023 6 28 OK
TW4-07 Carbon Tetrachloride 06/21/2023 06/26/2023 5 14 OK
TW4-07 Chloroform 06/21/2023 06/26/2023 5 14 OK
TW4-07 Chloromethane 06/21/2023 06/26/2023 5 14 OK
TW4-07 Methylene Chloride 06/21/2023 06/26/2023 5 14 OK
TW4-07 Nitrate+ Nitrite as N 06/21/2023 06/27/2023 6 28 OK
TW4-08 Chloride 06/21/2023 06/27/2023 6 28 OK
TW4-08 Carbon Tetrachloride 06/21/2023 06/26/2023 5 14 OK
TW4-08 Chloroform 06/21/2023 06/26/2023 5 14 OK
TW4-08 Chloromethane 06/21/2023 06/26/2023 5 14 OK
TW4-08 Methylene Chloride 06/21/2023 06/26/2023 5 14 OK
TW4-08 Nitrate + Nitrite as N 06/21/2023 06/26/2023 5 28 OK
TW4-08R Chloride 06/20/2023 06/27/2023 7 28 OK
TW4-08R Carbon Tetrachloride 06/20/2023 06/26/2023 6 14 OK
TW4-08R Chloroform 06/20/2023 06/26/2023 6 14 OK
TW4-08R Chloromethane 06/20/2023 06/26/2023 6 14 OK
TW4-08R Methylene Chloride 06/20/2023 06/26/2023 6 14 OK
TW4-08R Nitrate+ Nitrite as N 06/20/2023 06/26/2023 6 28 OK
TW4-09 Chloride 06/21/2023 06/27/2023 6 28 OK
TW4-09 Carbon Tetrachloride 06/21/2023 06/26/2023 5 14 OK
TW4-09 Chloroform 06/21/2023 06/26/2023 5 14 OK
TW4-09 Chloromethane 06/21/2023 06/26/2023 5 14 OK
TW4-09 Methylene Chloride 06/21/2023 06/26/2023 5 14 OK
TW4-09 Nitrate+ Nitrite as N 06/21/2023 06/26/2023 5 28 OK
TW4-10 Chloride 06/21/2023 06/27/2023 6 28 OK
TW4-10 Carbon Tetrachloride 06/21/2023 06/26/2023 5 14 OK
TW4-10 Chloroform 06/21/2023 06/26/2023 5 14 OK
TW4-10 Chloromethane 06/21/2023 06/26/2023 5 14 OK
TW4-10 Methylene Chloride 06/21/2023 06/26/2023 5 14 OK
TW4-10 Nitrate+ Nitrite as N 06/21/2023 06/27/2023 6 28 OK
TW4-ll Chloride 06/13/2023 06/20/2023 7 28 OK
TW4-l l Carbon Tetrachloride 06/13/2023 06/15/2023 2 14 OK
TW4-l l Chloroform 06/13/2023 06/15/2023 2 14 OK
TW4-l l Chloromethane 06/13/2023 06/15/2023 2 14 OK
TW4-l l Methylene Chloride 06/13/2023 06/15/2023 2 14 OK
TW4-l l Nitrate+ Nitrite as N 06/13/2023 06/19/2023 6 28 OK
TW4-12 Chloride 06/15/2023 06/20/2023 5 28 OK
TW4-12 Carbon Tetrachloride 06/15/2023 06/16/2023 1 14 OK
TW4-12 Chloroform 06/15/2023 06/16/2023 1 14 OK
TW4-12 Chloromethane 06/15/2023 06/16/2023 1 14 OK
TW4-12 Methylene Chloride 06/15/2023 06/16/2023 1 14 OK
TW4-12 Nitrate + Nitrite as N 06/15/2023 06/19/2023 4 28 OK
TW4-13 Chloride 06/15/2023 06/20/2023 5 28 OK
TW4-13 Carbon Tetrachloride 06/15/2023 06/16/2023 1 14 OK
TW4-13 Chloroform 06/15/2023 06/16/2023 1 14 OK
TW4-13 Chloromethane 06/15/2023 06/16/2023 1 14 OK
I-2: Holding Time Evaluation
Hold Time Allowed Hold Hold Time
Location ID Parameter Name Sample Date Analysis Date <Days) Time (Days) Check
TW4-13 Methylene Chloride 06/15/2023 06/16/2023 1 14 OK
TW4-13 Nitrate+ Nitrite as N 06/15/2023 06/19/2023 4 28 OK
TW4-14 Chloride 06/15/2023 06/20/2023 5 28 OK
TW4-14 Carbon Tetrachloride 06/15/2023 06/16/2023 1 14 OK
TW4-14 Chloroform 06/15/2023 06/16/2023 1 14 OK
TW4-14 Chloromethane 06/15/2023 06/16/2023 1 14 OK
TW4-14 Methylene Chloride 06/15/2023 06/16/2023 1 14 OK
TW4-14 Nitrate+ Nitrite as N 06/15/2023 06/19/2023 4 28 OK
MW-26 Chloride 06/13/2023 06/19/2023 6 28 OK
MW-26 Carbon Tetrachloride 06/13/2023 06/15/2023 2 14 OK
MW-26 Chloroform 06/13/2023 06/15/2023 2 14 OK
MW-26 Chloromethane 06/13/2023 06/15/2023 2 14 OK
MW-26 Methylene Chloride 06/13/2023 06/15/2023 2 14 OK
MW-26 Nitrate+ Nitrite as N 06/13/2023 06/19/2023 6 28 OK
TW4-16 Chloride 06/21/2023 06/27/2023 6 28 OK
TW4-16 Carbon Tetrachloride 06/21/2023 06/26/2023 5 14 OK
TW4-16 Chloroform 06/21/2023 06/26/2023 5 14 OK
TW4-16 Chloromethane 06/21/2023 06/26/2023 5 14 OK
TW4-16 Methylene Chloride 06/21/2023 06/26/2023 5 14 OK
TW4-16 Nitrate + Nitrite as N 06/21/2023 06/27/2023 6 28 OK
MW-32 Chloride 06/14/2023 06/20/2023 6 28 OK
MW-32 Carbon Tetrachloride 06/14/2023 06/15/2023 1 14 OK
MW-32 Chloroform 06/14/2023 06/15/2023 1 14 OK
MW-32 Chloromethane 06/14/2023 06/15/2023 1 14 OK
MW-32 Methylene Chloride 06/14/2023 06/15/2023 1 14 OK
MW-32 Nitrate+ Nitrite as N 06/14/2023 06/19/2023 5 28 OK
TW4-18 Chloride 06/21/2023 06/27/2023 6 28 OK
TW4-18 Carbon Tetrachloride 06/21/2023 06/26/2023 5 14 OK
TW4-18 Chloroform 06/21/2023 06/26/2023 5 14 OK
TW4-18 Chloromethane 06/21/2023 06/26/2023 5 14 OK
TW4-18 Methylene Chloride 06/21/2023 06/26/2023 5 14 OK
TW4-18 Nitrate+ Nitrite as N 06/21/2023 06/27/2023 6 28 OK
TW4-19 Chloride 06/13/2023 06/19/2023 6 28 OK
TW4-19 Carbon Tetrachloride 06/13/2023 06/15/2023 2 14 OK
TW4-19 Chloroform / 06/13/2023 06/15/2023 2 14 OK
TW4-19 Chloromethane 06/13/2023 06/15/2023 2 14 OK
TW4-19 Methylene Chloride 06/13/2023 06/15/2023 2 14 OK
TW4-19 Nitrate+ Nitrite as N 06/13/2023 06/19/2023 6 28 OK
TW4-21 Chloride 06/13/2023 06/19/2023 6 28 OK
TW4-21 Carbon Tetrachloride 06/13/2023 06/15/2023 2 14 OK
TW4-21 Chlor9form 06/13/2023 06/15/2023 2 14 OK
TW4-21 Chloromethane 06/13/2023 06/15/2023 2 14 OK
TW4-21 Methylene Chloride 06/13/2023 06/15/2023 2 14 OK
TW4-21 Nitrate + Nitrite as N 06/13/2023 06/19/2023 6 28 OK
TW4-22 Chloride 06/13/2023 06/19/2023 6 28 OK
TW4-22 Carbon Tetrachloride 06/13/2023 06/15/2023 2 14 OK
TW4-22 Chloroform 06/13/2023 06/15/2023 2 14 OK
TW4-22 Chloromethane 06/13/2023 06/15/2023 2 14 OK
TW4-22 Methylene Chloride 06/13/2023 06/15/2023 2 14 OK
TW4-22 Nitrate+ Nitrite as N 06/13/2023 06/19/2023 6 28 OK
TW4-23 Chloride 06/20/2023 06/26/2023 6 28 OK
TW4-23 Carbon Tetrachloride 06/20/2023 06/26/2023 6 14 OK
TW4-23 Chloroform 06/20/2023 06/26/2023 6 14 OK
1-2: Holding Time Evaluation
Hold Time Allowed Hold Hold Time
Location ID Parameter Name Sample Date Analysis Date (Davs) Time (Davs) Check
TW4-23 Chloromethane 06/20/2023 06/26/2023 6 14 OK
TW4-23 Methylene Chloride 06/20/2023 06/26/2023 6 14 OK
TW4-23 Nitrate+ Nitrite as N 06/20/2023 06/26/2023 6 28 OK
TW4-24 Chloride 06/13/2023 06/19/2023 6 28 OK
TW4-24 Carbon Tetrachloride 06/13/2023 06/15/2023 2 14 OK
TW4-24 Chloroform 06/13/2023 06/15/2023 2 14 OK
TW4-24 Chloromethane 06/13/2023 06/15/2023 2 14 OK
TW4-24 Methylene Chloride 06/13/2023 06/15/2023 2 14 OK
TW4-24 Nitrate+ Nitrite as N 06/13/2023 06/19/2023 6 28 OK
TW4-25 Chloride 06/13/2023 06/19/2023 6 28 OK
TW4-25 Carbon Tetrachloride 06/13/2023 06/15/2023 2 14 OK
TW4-25 Chloroform 06/13/2023 06/15/2023 2 14 OK
TW4-25 Chloromethane 06/13/2023 06/15/2023 2 14 OK
TW4-25 Methylene Chloride 06/13/2023 06/15/2023 2 14 OK
TW4-25 Nitrate+ Nitrite as N 06/13/2023 06/19/2023 6 28 OK
TW4-26 Chloride 06/21/2023 06/27/2023 6 28 OK
TW4-26 Carbon Tetrachloride 06/21/2023 06/26/2023 5 14 OK
TW4-26 Chloroform 06/21/2023 06/26/2023 5 14 OK
TW4-26 Chloromethane 06/21/2023 06/26/2023 5 14 OK
TW4-26 Methylene Chloride 06/21/2023 06/26/2023 5 14 OK
TW4-26 Nitrate+ Nitrite as N 06/21/2023 06/27/2023 6 28 OK
TW4-27 Chloride 06/21/2023 06/27/2023 6 28 OK
TW4-27 Carbon Tetrachloride 06/21/2023 06/26/2023 5 14 OK
TW4-27 Chloroform 06/21/2023 06/26/2023 5 14 OK
TW4-27 Chloromethane 06/21/2023 06/26/2023 5 14 OK
TW4-27 Methylene Chloride 06/21/2023 06/26/2023 5 14 OK
TW4-27 Nitrate+ Nitrite as N 06/21/2023 06/26/2023 5 28 OK
TW4-28 Chloride 06/15/2023 06/20/2023 5 28 OK
TW4-28 Carbon Tetrachloride 06/15/2023 06/16/2023 1 14 OK
TW4-28 Chloroform 06/15/2023 06/16/2023 1 14 OK
TW4-28 Chloromethane 06/15/2023 06/16/2023 1 14 OK
TW4-28 Methylene Chloride 06/15/2023 06/16/2023 1 14 OK
TW4-28 Nitrate+ Nitrite as N 06/15/2023 06/19/2023 4 28 OK
TW4-29 Chloride 06/21/2023 06/27/2023 6 28 OK
TW4-29 Carbon Tetrachloride 06/21/2023 06/26/2023 5 14 OK
TW4-29 Chloroform 06/21/2023 06/26/2023 5 14 OK
TW4-29 Chloromethane 06/21/2023 06/26/2023 5 14 OK
TW4-29 Methylene Chloride 06/21/2023 06/26/2023 5 14 OK
TW4-29 Nitrate + Nitrite as N 06/21/2023 06/27/2023 6 28 OK
TW4-30 Chloride 06/21/2023 06/27/2023 6 28 OK
TW4-30 Carbon Tetrachloride 06/21/2023 06/26/2023 5 14 OK
TW4-30 Chloroform 06/21/2023 06/26/2023 5 14 OK
TW4-30 Chloromethane 06/21/2023 06/26/2023 5 14 OK
TW4-30 Methylene Chloride 06/21/2023 06/26/2023 5 14 OK
TW4-30 Nitrate+ Nitrite as N 06/21/2023 06/26/2023 5 28 OK
TW4-31 Chloride 06/15/2023 06/20/2023 5 28 OK
TW4-31 Carbon Tetrachloride 06/15/2023 06/17/2023 2 14 OK
TW4-31 Chloroform 06/15/2023 06/17/2023 2 14 OK
TW4-31 Chloromethane 06/15/2023 06/17/2023 2 14 OK
TW4-31 Methylene Chloride 06/15/2023 06/17/2023 2 14 OK
TW4-31 Nitrate+ Nitrite as N 06/15/2023 06/19/2023 4 28 OK
TW4-32 Chloride 06/15/2023 06/20/2023 5 28 OK
TW4-32 Carbon Tetrachloride 06/15/2023 06/16/2023 1 14 OK
1-2: Holding Time Evaluation
Hold Time Allowed Hold Hold Time
Location ID Parameter Name Sample Date Analysis Date (Days) Time (Days) Check
TW4-32 Chloroform 06/15/2023 06/16/2023 1 14 OK
TW4-32 Chloromethane 06/15/2023 06/16/2023 1 14 OK
TW4-32 Methylene Chloride 06/15/2023 06/16/2023 1 14 OK
TW4-32 Nitrate+ Nitrite as N 06/15/2023 06/19/2023 4 28 OK
TW4-33 Chloride 06/21/2023 06/27/2023 6 28 OK
TW4-33 Carbon Tetrachloride 06/21/2023 06/26/2023 5 14 OK
TW4-33 Chloroform 06/21/2023 06/26/2023 5 14 OK
TW4-33 Chloromethane 06/21/2023 06/26/2023 5 14 OK
TW4-33 Methylene Chloride 06/21/2023 06/26/2023 5 14 OK
TW4-33 Nitrate+ Nitrite as N 06/21/2023 06/26/2023 5 28 OK
TW4-34 Chloride 06/20/2023 06/27/2023 7 28 OK
TW4-34 Carbon Tetrachloride 06/20/2023 06/26/2023 6 14 OK
TW4-34 Chloroform 06/20/2023 06/26/2023 6 14 OK
TW4-34 Chloromethane 06/20/2023 06/26/2023 6 14 OK
TW4-34 Methylene Chloride 06/20/2023 06/26/2023 6 14 OK
TW4-34 Nitrate+ Nitrite as N 06/20/2023 06/26/2023 6 28 OK
TW4-35 Chloride 06/20/2023 06/26/2023 6 28 OK
TW4-35 Carbon Tetrachloride 06/20/2023 06/26/2023 6 14 OK
TW4-35 Chloroform 06/20/2023 06/26/2023 6 14 OK
TW4-35 Chloromethane 06/20/2023 06/26/2023 6 14 OK
TW4-35 Methylene Chloride 06/20/2023 06/26/2023 6 14 OK
TW4-35 Nitrate+ Nitrite as N 06/20/2023 06/26/2023 6 28 OK
TW4-36 Chloride 06/15/2023 06/20/2023 5 28 OK
TW4-36 Carbon Tetrachloride 06/15/2023 06/16/2023 1 14 OK
TW4-36 Chloroform 06/15/2023 06/16/2023 1 14 OK
TW4-36 Chloromethane 06/15/2023 06/16/2023 1 14 OK
TW4-36 Methylene Chloride 06/15/2023 06/16/2023 1 14 OK
TW4-36 Nitrate+ Nitrite as N 06/15/2023 06/19/2023 4 28 OK
TW4-37 Chloride 06/13/2023 06/20/2023 7 28 OK
TW4-37 Carbon Tetrachloride 06/13/2023 06/15/2023 2 14 OK
TW4-37 Chloroform 06/13/2023 06/15/2023 2 14 OK
TW4-37 Chloromethane 06/13/2023 06/15/2023 2 14 OK
TW4-37 Methylene Chloride 06/13/2023 06/15/2023 2 14 OK
TW4-37 Nitrate + Nitrite as N 06/13/2023 06/19/2023 6 28 OK
TW4-38 Chloride 06/20/2023 06/27/2023 7 28 OK
TW4-38 Carbon Tetrachloride 06/20/2023 06/26/2023 6 14 OK
TW4-38 Chloroform 06/20/2023 06/26/2023 6 14 OK
TW4-38 Chloromethane 06/20/2023 06/26/2023 6 14 OK
TW4-38 Methylene Chloride 06/20/2023 06/26/2023 6 14 OK
TW4-38 Nitrate + Nitrite as N 06/20/2023 06/26/2023 6 28 OK
TW4-39 Chloride 06/13/2023 06/19/2023 6 28 OK
TW4-39 Carbon Tetrachloride 06/13/2023 06/15/2023 2 14 OK
TW4-39 Chloroform 06/13/2023 06/15/2023 2 14 OK
TW4-39 Chloromethane 06/13/2023 06/15/2023 2 14 OK
TW4-39 Methylene Chloride 06/13/2023 06/15/2023 2 14 OK
TW4-39 Nitrate+ Nitrite as N 06/13/2023 06/19/2023 6 28 OK
TW4-40 Chloride 06/13/2023 06/19/2023 6 28 OK
TW4-40 Carbon Tetrachloride 06/13/2023 06/16/2023 3 14 OK
TW4-40 Chloroform 06/13/2023 06/16/2023 3 14 OK
TW4-40 Chloromethane 06/13/2023 06/16/2023 3 14 OK
TW4-40 Methylene Chloride 06/13/2023 06/16/2023 3 14 OK
TW4-40 Nitrate+ Nitrite as N 06/13/2023 06/19/2023 6 28 OK
TW4-41 Chloride 06/13/2023 06/19/2023 6 28 OK
1-2: Holding Time Evaluation
Hold Time Allowed Hold Hold Time
Location ID Parameter Name Sample Date Analysis Date (Days) Time (Days) Check
TW4-41 Carbon Tetrachloride 06/13/2023 06/15/2023 2 14 OK
TW4-41 Chloroform 06/13/2023 06/15/2023 2 14 OK
TW4-41 Chloromethane 06/13/2023 06/15/2023 2 14 OK
TW4-41 Methylene Chloride 06/13/2023 06/15/2023 2 14 OK
TW4-41 Nitrate+ Nitrite as N 06/13/2023 06/19/2023 6 28 OK
TW4-42 Chloride 06/15/2023 06/20/2023 5 28 OK
TW4-42 Carbon Tetrachloride 06/15/2023 06/16/2023 1 14 OK
TW4-42 Chloroform 06/15/2023 06/16/2023 I 14 OK
TW4-42 Chloromethane 06/15/2023 06/16/2023 1 14 OK
TW4-42 Methylene Chloride 06/15/2023 06/16/2023 1 14 OK
TW4-42 Nitrate + Nitrite as N 06/15/2023 06/19/2023 4 28 OK
TW4-43 Chloride 06/15/2023 06/20/2023 5 28 OK
TW4-43 Carbon Tetrachloride 06/15/2023 06/19/2023 4 14 OK
TW4-43 Chloroform 06/15/2023 06/19/2023 4 14 OK
TW4-43 Chloromethane 06/15/2023 06/19/2023 4 14 OK
TW4-43 Methylene Chloride 06/15/2023 06/19/2023 4 14 OK
TW4-43 Nitrate+ Nitrite as N 06/15/2023 06/19/2023 4 28 OK
TW4-60 Chloride 06/13/2023 06/20/2023 7 28 OK
TW4-60 Carbon Tetrachloride 06/13/2023 06/16/2023 3 14 OK
TW4-60 Chloroform 06/13/2023 06/16/2023 3 14 OK
TW4-60 Chloromethane 06/13/2023 06/16/2023 3 14 OK
TW4-60 Methylene Chloride 06/13/2023 06/16/2023 3 14 OK
TW4-60 Nitrate+ Nitrite as N 06/13/2023 06/19/2023 6 28 OK
TW4-65 Chloride 06/15/2023 06/20/2023 5 28 OK
TW4-65 Carbon Tetrachloride 06/15/2023 06/19/2023 4 14 OK
TW4-65 Chloroform 06/15/2023 06/19/2023 4 14 OK
TW4-65 Chloromethane 06/15/2023 06/19/2023 4 14 OK
TW4-65 Methylene Chloride 06/15/2023 06/19/2023 4 14 OK
TW4-65 Nitrate+ Nitrite as N 06/15/2023 06/19/2023 4 28 OK
TW4-70 Chloride 06/20/2023 06/27/2023 7 28 OK
TW4-70 Carbon Tetrachloride 06/20/2023 06/26/2023 6 14 OK
TW4-70 Chloroform 06/20/2023 06/26/2023 6 14 OK
TW4-70 Chloromethane 06/20/2023 06/26/2023 6 14 OK
TW4-70 Methylene Chloride 06/20/2023 06/26/2023 6 14 OK
TW4-70 Nitrate + Nitrite as N 06/20/2023 06/26/2023 6 28 OK
TW4-75 Chloride 06/21/2023 06/27/2023 6 28 OK
TW4-75 Carbon Tetrachloride 06/21 /2023 06/27/2023 6 14 OK
TW4-75 Chloroform 06/21/2023 06/27/2023 6 14 OK
TW4-75 Chloromethane 06/21 /2023 06/27/2023 6 14 OK
TW4-75 Methylene Chloride 06/21/2023 06/27/2023 6 14 OK
TW4-75 Nitrate+ Nitrite as N 06/21 /2023 06/27/2023 6 28 OK
Table 1-3 Recipt Temperature Check
Sample Batch Wells in Batch Temperature
MW-04, TW4-0l, TW4-02, TW4-03R, TW4-04, TW4-l l, MW-26, MW-32, TW4
23Fl268 19, TW4-21, TW4-22, TW4-24, TW4-25, TW4-37, TW4-39, TW4-40, TW4-41, -2.3°C
TW4-60, Trip Blank
23Fl372 TW4-03, TW4-12, TW4-13, TW4-14, TW4-28, TW4-31, TW4-32, TW4-36, l.3°C TW4-42, TW4-43, TW4-65, Trip Blank
TW4-05, TW4-06, TW4-07, TW4-08, TW4-08R, TW4-09, TW4-10, TW4-16,
23F1815 TW4-18, TW4-23, TW4-26, TW4-27, TW4-29, TW4-30, TW4-33, TW4-34, -2.2°C
TW4-35, TW4-38, TW4-70, TW4-75, Trip Blank
I-4 Analytical Method Check
Parameter Method Method Used by Lab
SW8260B,
Carbon Tetrachloride SW8260C or SW8260D
SW8260D
A4500-Cl B or
Chloride A4500-Cl E or E300.0
E300.0
SW8260B,
Chloroform SW8260C or SW8260D
SW8260D
SW8260B,
Chloromethane SW8260C or SW8260D
SW8260D
SW8260B,
Methylene chloride SW8260C or SW8260D
SW8260D
Nitrogen E353. I or E353 .2 E353.2
All parameters were analyzed using the reporting method specificied in the QAP
-. eportmg 1m1t ec I 5 R L" . Ch k
Lab
Reporting Dilution Required
Location Analyte Limit Units Qualifier Factor Reporting Limit RLCheck
Trip Blank Carbon Tetrachloride 1.0 ug/L u 1 1 OK
Trip Blank Chloroform 1.0 ug/L u 1 1 OK
Trip Blank Chloromethane 1.0 ug/L u I I OK
Trip Blank Methylene Chloride 1.0 ug/L u I 1 OK
Trip Blank, Carbon Tetrachloride 1.0 ug/L u 1 1 OK
Trip Blank Chloroform 1.0 ug/L u 1 1 OK
Trip Blank Chloromethane 1.0 ug/L u 1 1 OK
Trip Blank Methylene Chloride 1.0 ug/L u 1 I OK
Trip Blank Carbon Tetrachloride 1.0 ug/L u I 1 OK
Trip Blank Chloroform 1.0 ug/L u 1 I OK
Trip Blank Chloromethane 1.0 ug/L u I I OK
Trip Blank Methylene Chloride 1.0 ug/L u 1 1 OK
MW-04 Chloride 1.00 mg/L 1 1 OK
MW-04 Carbon Tetrachloride 1.0 ug/L u 1 1 OK
MW-04 Chloroform 100 ug/L 100 1 OK
MW-04 Chloromethane 1.0 ug/L I 1 OK
MW-04 Methylene Chloride 1.0 ug/L u 1 1 OK
MW-04 Nitrate+ Nitrite as N 0.100 mg/L I 0.1 OK
TW4-0l Chloride 1.00 mg/L 1 1 OK
TW4-0l Carbon Tetrachloride 1.0 ug/L u I 1 OK
TW4-0I Chloroform 50.0 ug/L 50 1 OK
TW4-0l Chloromethane 1.0 ug/L 1 1 OK
TW4-0l Methylene Chloride 1.0 ug/L u 1 1 OK
TW4-0l Nitrate+ Nitrite as N 0.100 mg/L 1 0.1 OK
TW4-02 Chloride 1.00 mg/L 1 1 OK
TW4-02 Carbon Tetrachloride 1.0 ug/L u 1 I OK
TW4-02 Chloroform 50.0 ug/L 50 1 OK
TW4-02 Chloromethane 1.0 ug/L 1 1 OK
TW4-02 Methylene Chloride 1.0 ug!L u I I OK
TW4-02 Nitrate+ Nitrite as N 0.100 mg/L 1 0.1 OK
TW4-03 Chloride 1.00 mg/L I 1 OK
TW4-03 Carbon Tetrachloride 1.0 ug/L u I 1 OK
TW4-03 Chloroform 1.0 ug/L u 1 1 OK
TW4-03 Chloromethane 1.0 ug/L u 1 1 OK
TW4-03 Methylene Chloride 1.0 ug/L u 1 1 OK
TW4-03 Nitrate+ Nitrite as N 0.200 mg/L 2 0.1 OK
TW4-03R Chloride 1.00 mg/L u I 1 OK
TW4-03R Carbon Tetrachloride 1.0 ug/L u 1 I OK
TW4-03R Chloroform 1.0 ug/L I 1 OK
TW4-03R Chloromethane 1.0 ug/L u 1 1 OK
TW4-03R Methylene Chloride 1.0 ug/L u 1 1 OK
TW4-03R Nitrate+ Nitrite as N 0.100 mg/L u 1 0.1 OK
TW4-04 Chloride 1.00 mg/L 1 1 OK
TW4-04 Carbon Tetrachloride 1.0 ug/L u 1 1 OK
TW4-04 Chloroform 100 ug/L 100 1 OK
TW4-04 Chloromethane 1.0 ug/L 1 1 OK
TW4-04 Methylene Chloride 1.0 ug/L u 1 1 OK
TW4-04 Nitrate+ Nitrite as N 0.200 mg/L 2 0.1 OK
TW4-05 Chloride 1.00 mg/L I I OK
TW4-05 Carbon Tetrachloride 1.0 ug/L u I I OK
TW4-05 Chloroform 1.0 ug/L 1 1 OK
TW4-05 Chloromethane 1.0 ug/L u 1 1 OK
TW4-05 Methylene Chloride 1.0 ug/L u 1 1 OK
TW4-05 Nitrate+ Nitrite as N 0.500 mg/L 5 0.1 OK
TW4-06 Chloride 1.00 mg/L I I OK
-eportmg 1m1t ec I 5 R L' . Ch k
Lab
Reporting Dilution Required
Location Analvte Limit Units Qualifier Factor Reporting Limit RLCheck
TW4-06 Carbon Tetrachloride 1.0 ug/L u 1 1 OK
TW4-06 Chloroform 1.0 ug/L 1 1 OK
TW4-06 Chloromethane 1.0 ug/L u 1 1 OK
TW4-06 Methylene Chloride 1.0 ug/L u 1 1 OK
TW4-06 Nitrate + Nitrite as N 0.100 mg/L 1 0.1 OK
TW4-07 Chloride 1.00 mg/L 1 1 OK
TW4-07 Carbon Tetrachloride 1.0 ug/L u 1 1 OK
TW4-07 Chloroform 50.0 ug/L 50 1 OK
TW4-07 Chloromethane 1.0 ug/L u 1 1 OK
TW4-07 Methylene Chloride 1.0 ug/L u 1 1 OK
TW4-07 Nitrate + Nitrite as N 0.100 mg/L 1 0.1 OK
TW4-08 Chloride 1.00 mg/L 1 1 OK
TW4-08 Carbon Tetrachloride 1.0 ug/L u 1 1 OK
TW4-08 Chloroform 1.0 ug/L 1 1 OK
TW4-08 Chloromethane 1.0 ug/L u 1 1 OK
TW4-08 Methylene Chloride 1.0 ug/L u 1 1 OK
TW4-08 Nitrate + Nitrite as N 0.100 mg/L 1 0.1 OK
TW4-08R Chloride 1.00 mg/L u 1 1 OK
TW4-08R Carbon Tetrachloride 1.0 ug/L u I I OK
TW4-08R Chloroform 1.0 ug/L 1 1 OK
TW4-08R Chloromethane 1.0 ug/L u I 1 OK
TW4-08R Methylene Chloride 1.0 ug/L u 1 1 OK
TW4-08R Nitrate+ Nitrite as N 0.100 mg/L u 1 0.1 OK
TW4-09 Chloride 1.00 mg/L 1 I OK
TW4-09 Carbon Tetrachloride 1.0 ug/L u 1 1 OK
TW4-09 Chloroform 1.0 ug/L 1 1 OK
TW4-09 Chloromethane 1.0 ug/L u 1 I OK
TW4-09 Methylene Chloride 1.0 ug/L u 1 I OK
TW4-09 Nitrate+ Nitrite as N 0.100 mg/L 1 0.1 OK
TW4-10 Chloride 1.00 mg/L 1 I OK
TW4-10 Carbon Tetrachloride 1.0 ug/L u 1 1 OK
TW4-10 Chloroform 50.0 ug/L 50 1 OK
TW4-10 Chloromethane 1.0 ug/L u I 1 OK
TW4-10 Methylene Chloride 1.0 ug/L u 1 1 OK
TW4-10 Nitrate+ Nitrite as N 0.100 mg/L 1 0.1 OK
TW4-l l Chloride 1.00 mg/L 1 1 OK
TW4-11 Carbon Tetrachloride 1.0 ug/L u 1 I OK
TW4-l 1 Chloroform 100 ug/L 100 1 OK
TW4-l l Chloromethane 1.0 ug/L 1 I OK
TW4-l 1 Methylene Chloride 1.0 ug/L u 1 I OK
TW4-l l Nitrate+ Nitrite as N 0.200 mg/L 2 0.1 OK
TW4-12 Chloride 1.00 mg/L 1 I OK
TW4-12 Carbon Tetrachloride 1.0 ug/L u 1 1 OK
TW4-12 Chloroform 1.0 ug/L u 1 1 OK
TW4-12 Chloromethane 1.0 ug/L u 1 I OK
TW4-12 Methylene Chloride 1.0 ug/L u 1 1 OK
TW4-12 Nitrate+ Nitrite as N 0.100 mg/L 1 1 OK
TW4-13 Chloride 1.00 mg/L 1 I OK
TW4-13 Carbon Tetrachloride 1.0 ug/L u 1 I OK
TW4-13 Chloroform 1.0 ug/L u 1 I OK
TW4-13 Chloromethane 1.0 ug/L u 1 0.1 OK
TW4-13 Methylene Chloride 1.0 ug/L u 1 I OK
TW4-13 Nitrate + Nitrite as N 0.100 mg/L 1 0.1 OK
TW4-14 Chloride 1.00 mg/L 1 I OK
TW4-14 Carbon Tetrachloride 1.0 ug/L u 1 1 OK
-eportmg 1m1t ec I 5 R L" . Ch k
Lab
Reporting Dilution Required
Location Analyte Limit Units Qualifier Factor Reporting Limit RLCheck
TW4-14 Chloroform 1.0 ug!L u 1 1 OK
TW4-14 Chloromethane 1.0 ug/L u 1 1 OK
TW4-14 Methylene Chloride 1.0 ug/L u 1 I OK
TW4-14 Nitrate+ Nitrite as N 0.200 mg/L 2 0.1 OK
MW-26 Chloride 1.00 mg/L I I OK
MW-26 Carbon Tetrachloride 1.0 ug/L u 1 1 OK
MW-26 Chloroform 100 ug/L 100 1 OK
MW-26 Chloromethane 1.0 ug/L 1 1 OK
MW-26 Methylene Chloride 1.0 ug/L u 1 1 OK
MW-26 Nitrate+ Nitrite as N 0.100 mg/L 1 0.1 OK
TW4-16 Chloride 1.00 mg/L 1 I OK
TW4-16 Carbon Tetrachloride 1.0 ug/L u 1 1 OK
TW4-16 Chloroform 10.0 ug/L IO 1 OK
TW4-16 Chloromethane 1.0 ug/L u 1 1 OK
TW4-16 Methylene Chloride 1.0 ug/L u 1 1 OK
TW4-16 Nitrate+ Nitrite as N 0.500 mg/L 5 0.1 OK
MW-32 Chloride 1.00 mg/L 1 1 OK
MW-32 Carbon Tetrachloride 1.0 ug/L u 1 1 OK
MW-32 Chloroform 1.0 ug/L u 1 1 OK
MW-32 Chloromethane 1.0 ug/L u I I OK
MW-32 Methylene Chloride 1.0 ug/L u I I OK
MW-32 Nitrate+ Nitrite as N 0.100 mg/L u I I OK
TW4-18 Chloride 1.00 mg/L 1 1 OK
TW4-18 Carbon Tetrachloride 1.0 ug/L u 1 I OK
TW4-18 Chloroform 1.0 ug/L 1 1 OK
TW4-18 Chloromethane 1.0 ug/L u 1 0.1 OK
TW4-18 Methylene Chloride 1.0 ug/L u 1 1 OK
TW4-18 Nitrate + Nitrite as N 0.100 mg/L I 0.1 OK
TW4-19 Chloride 5.00 mg/L 5 1 OK
TW4-19 Carbon Tetrachloride 1.0 ug/L I I OK
TW4-19 Chloroform 100 ug/L 100 I OK
TW4-19 Chloromethane 1.0 ug/L I 1 OK
TW4-19 Methylene Chloride 1.0 ug/L u 1 1 OK
TW4-19 Nitrate+ Nitrite as N 0.200 mg/L 2 0.1 OK
TW4-21 Chloride 10.0 mg/L 10 I OK
TW4-21 Carbon Tetrachloride 1.0 ug/L u 1 I OK
TW4-21 Chloroform 50.0 ug/L 50 1 OK
TW4-21 Chloromethane 1.0 ug/L 1 1 OK
TW4-21 Methylene Chloride 1.0 ug/L u 1 I OK
TW4-21 Nitrate + Nitrite as N 0.500 mg/L 5 0.1 OK
TW4-22 Chloride 10.0 mg/L 10 1 OK
TW4-22 Carbon Tetrachloride 1.0 ug/L u 1 1 OK
TW4-22 Chloroform 100 ug/L 100 1 OK
TW4-22 Chloromethane 1.0 ug!L 1 1 OK
TW4-22 Methylene Chloride 1.0 ug/L 1 1 OK
TW4-22 Nitrate + Nitrite as N 1.00 mg/L IO 0.1 OK
TW4-23 Chloride 1.00 mg/L 1 1 OK
TW4-23 Carbon Tetrachloride 1.0 ug/L u 1 1 OK
TW4-23 Chloroform 1.0 ug!L u I 1 OK
TW4-23 Chloromethane 1.0 ug/L u 1 1 OK
TW4-23 Methylene Chloride 1.0 ug/L u 1 I OK
TW4-23 Nitrate + Nitrite as N 0.100 mg/L u 1 0.1 OK
TW4-24 Chloride 20.0 mg/L 20 1 OK
TW4-24 Carbon Tetrachloride 1.0 ug!L u 1 1 OK
TW4-24 Chloroform 1.0 ug/L 1 1 OK
h k I-5 Reporting L1m1t C ec
Lab
Reporting Dilution Required
Location Analyte Limit Units Qualifier Factor Reporting Limit RLCheck
TW4-24 Chloromethane 1.0 ug/L u 1 I OK
TW4-24 Methvlene Chloride 1.0 ug/L u I I OK
TW4-24 Nitrate+ Nitrite as N 1.00 mg/L IO 0.1 OK
TW4-25 Chloride 1.00 mg/L I I OK
TW4-25 Carbon Tetrachloride 1.0 ug/L u I I OK
TW4-25 Chlorofonn 1.0 ug/L u I 1 OK
TW4-25 Chloromethane 1.0 ug/L u I I OK
TW4-25 Methylene Chloride 1.0 ug/L u 1 I OK
TW4-25 Nitrate+ Nitrite as N 0.100 mg/L I 0.1 OK
TW4-26 Chloride 1.00 mg/L I I OK
TW4-26 Carbon Tetrachloride 1.0 ug/L u I I OK
TW4-26 Chlorofonn 50.0 ug/L 50 I OK
TW4-26 Chloromethane 1.0 ug/L u I I OK
TW4-26 Methylene Chloride 1.0 ug/L u I I OK
TW4-26 Nitrate+ Nitrite as N 0.500 mg/L 5 0.1 OK
TW4-27 Chloride 1.00 mg/L I I OK
TW4-27 Carbon Tetrachloride 1.0 ug/L u I I OK
TW4-27 Chlorofonn 1.0 ug/L I I OK
TW4-27 Chloromethane 1.0 ug/L u I I OK
TW4-27 Methylene Chloride 1.0 ug/L u I I OK
TW4-27 Nitrate+ Nitrite as N 0.500 mg/L 5 0.1 OK
TW4-28 Chloride 1.00 mg/L 1 I OK
TW4-28 Carbon Tetrachloride 1.0 ug/L u I I OK
TW4-28 Chlorofonn 1.0 ug/L u I I OK
TW4-28 Chloromethane 1.0 ug/L u I I OK
TW4-28 Methylene Chloride 1.0 ug/L u I 1 OK
TW4-28 Nitrate+ Nitrite as N 0.500 mg/L 5 0.1 OK
TW4-29 Chloride 1.00 mg/L I I OK
TW4-29 Carbon Tetrachloride 1.0 ug/L u 1 I OK
TW4-29 Chlorofonn 50.0 ug/L 50 I OK
TW4-29 Chloromethane 1.0 ug/L u I I OK
TW4-29 Methylene Chloride 1.0 ug/L u I I OK
TW4-29 Nitrate+ Nitrite as N 0.100 mg/L I 0.1 OK
TW4-30 Chloride 1.00 mg/L 1 I OK
TW4-30 Carbon Tetrachloride 1.0 ug/L u I I OK
TW4-30 Chlorofonn 1.0 ug/L I I OK
TW4-30 Chloromethane 1.0 ug/L u I I OK
TW4-30 Methylene Chloride 1.0 ug/L u I 1 OK
TW4-30 Nitrate+ Nitrite as N 0.100 mg/L I 0.1 OK
TW4-31 Chloride 1.00 mg/L I I OK
TW4-31 Carbon Tetrachloride 1.0 ug/L u I I OK
TW4-31 Chlorofonn 1.0 ug/L u I I OK
TW4-31 Chloromethane 1.0 ug/L u I I OK
TW4-31 Methylene Chloride . 1.0 ug/L u I I OK
TW4-31 Nitrate + Nitrite as N 0.100 mg/L I 0.1 OK
TW4-32 Chloride 1.00 mg/L I I OK
TW4-32 Carbon Tetrachloride 1.0 ug/L u I I OK
TW4-32 Chlorofonn 1.0 ug/L u I I OK
TW4-32 Chloromethane 1.0 ug/L u I I OK
TW4-32 Methylene Chloride 1.0 ug/L u I I OK
TW4-32 Nitrate+ Nitrite as N 0.100 mg/L I 0.1 OK
TW4-33 Chloride 1.00 mg/L I I OK
TW4-33 Carbon Tetrachloride 1.0 ug/L u I I OK
TW4-33 Chlorofonn 1.0 ug/L I I OK
TW4-33 Chloromethane 1.0 ug/L u I I OK
-eportm.~ 1m1t ec I 5 R L" . Ch k
Lab
Reporting Dilution Required
Location Analvte Limit Units Qualifier Factor Reporting Limit RL Check
TW4-33 Methylene Chloride 1.0 ug/L u 1 1 OK
TW4-33 Nitrate+ Nitrite as N 0.100 mg/L 1 0.1 OK
TW4-34 Chloride 1.00 mg/L 1 1 OK
TW4-34 Carbon Tetrachloride 1.0 ug/L u 1 1 OK
TW4-34 Chloroform 1.0 ug/L 1 1 OK
TW4-34 Chloromethane 1.0 ug/L u 1 1 OK
TW4-34 Methylene Chloride 1.0 ug/L u 1 1 OK
TW4-34 Nitrate+ Nitrite as N 0.100 mg/L 1 0.1 OK
TW4-35 Chloride 1.00 mg/L 1 1 OK
TW4-35 Carbon Tetrachloride 1.0 ug/L u 1 1 OK
TW4-35 Chloroform 1.0 ug/L u 1 1 OK
TW4-35 Chloromethane 1.0 ug/L u 1 1 OK
TW4-35 Methylene Chloride 1.0 ug/L u 1 1 OK
TW4-35 Nitrate+ Nitrite as N 0.100 mg/L 1 0.1 OK
TW4-36 Chloride 1.00 mg/L 1 1 OK
TW4-36 Carbon Tetrachloride 1.0 ug/L u 1 1 OK
TW4-36 Chloroform 1.0 ug/L u 1 1 OK
TW4-36 Chloromethane 1.0 ug/L u 1 1 OK
TW4-36 Methylene Chloride 1.0 ug/L u 1 1 OK
TW4-36 Nitrate + Nitrite as N 0.100 mg/L u 1 0.1 OK
TW4-37 Chloride 10.0 mg/L 10 1 OK
TW4-37 Carbon Tetrachloride 1.0 ug/L 1 1 OK
TW4-37 Chloroform 100 ug/L 100 1 OK
TW4-37 Chloromethane 1.0 ug/L 1 1 OK
TW4-37 Methylene Chloride 1.0 ug/L u 1 1 OK
TW4-37 Nitrate + Nitrite as N 1.00 mg/L 10 0.1 OK
TW4-38 Chloride 1.00 mg/L 1 1 OK
TW4-38 Carbon Tetrachloride 1.0 ug/L u 1 1 OK
TW4-38 Chloroform 1.0 ug/L u 1 1 OK
TW4-38 Chloromethane 1.0 ug/L u 1 1 OK
TW4-38 Methylene Chloride 1.0 ug/L u 1 1 OK
TW4-38 Nitrate+ Nitrite as N 0.500 mg/L 5 0.1 OK
TW4-39 Chloride 1.00 mg/L 1 1 OK
TW4-39 Carbon Tetrachloride 1.0 ug/L 1 1 OK
TW4-39 Chloroform 100 ug/L 100 1 OK
TW4-39 Chloromethane 1.0 ug/L 1 1 OK
TW4-39 Methylene Chloride 1.0 ug/L u 1 1 OK
TW4-39 Nitrate+ Nitrite as N 0.200 mg/L 2 0.1 OK
TW4-40 Chloride 1.00 mg/L 1 1 OK
TW4-40 Carbon Tetrachloride 1.0 ug/L u 1 1 OK
TW4-40 Chloroform 10.0 ug/L 10 1 OK
TW4-40 Chloromethane 1.0 ug/L 1 1 OK
TW4-40 Methylene Chloride 1.0 ug/L u 1 1 OK
TW4-40 Nitrate+ Nitrite as N 0.100 mg/L 1 0.1 OK
TW4-41 Chloride 1.00 mg/L 1 1 OK
TW4-41 Carbon Tetrachloride 1.0 ug/L u 1 1 OK
TW4-41 Chloroform 100 ug/L 100 1 OK
TW4-41 Chloromethane 1.0 ug/L 1 1 OK
TW4-41 Methylene Chloride 1.0 ug/L u 1 1 OK
TW4-41 Nitrate+ Nitrite as N 0.200 mg/L 2 0.1 OK
TW4-42 Chloride 1.00 mg/L 1 1 OK
TW4-42 Carbon Tetrachloride 1.0 ug/L u 1 1 OK
TW4-42 Chloroform 1.0 ug/L u 1 1 OK
TW4-42 Chloromethane 1.0 ug/L u 1 1 OK
TW4-42 Methvlene Chloride 1.0 ug/L u 1 1 OK
-eportmg 1m1t ec I 5 R L .. Ch k
Lab
Reporting Dilution Required
Location Analvte Limit Units Qualifier Factor Reporting Limit RL Check
TW4-42 Nitrate+ Nitrite as N 0.100 mg/L I 0.1 OK
TW4-43 Chloride 1.00 mg/L I I OK
TW4-43 Carbon Tetrachloride 1.0 ug/L u I I OK
TW4-43 Chloroform 1.0 ug/L u I I OK
TW4-43 Chloromethane 1.0 ug/L u I I OK
TW4-43 Methylene Chloride 1.0 ug/L u I I OK
TW4-43 Nitrate + Nitrite as N 0.100 mg/L I 0.1 OK
TW4-60 Chloride 1.00 mg/L u I I OK
TW4-60 Carbon Tetrachloride 1.0 ug/L u I I OK
TW4-60 Chloroform 1.0 ug/L I I OK
TW4-60 Chloromethane 1.0 ug/L u I I OK
TW4-60 Methylene Chloride 1.0 ug/L u I I OK
TW4-60 Nitrate+ Nitrite as N 0.100 mg/L u I 0.1 OK
TW4-65 Chloride 1.00 mg/L I I OK
TW4-65 Carbon Tetrachloride 1.0 ug/L u 1 I OK
TW4-65 Chloroform 1.0 ug/L u 1 1 OK
TW4-65 Chloromethane 1.0 ug/L u 1 I OK
TW4-65 Methylene Chloride 1.0 ug/L u 1 1 OK
TW4-65 Nitrate+ Nitrite as N 0.100 mg/L I 0.1 OK
TW4-70 Chloride 1.00 mg/L 1 I OK
TW4-70 Carbon Tetrachloride 1.0 ug/L u I 1 OK
TW4-70 Chloroform 1.0 ug/L u 1 1 OK
TW4-70 Chloromethane 1.0 ug/L u 1 1 OK
TW4-70 Methylene Chloride 1.0 ug/L u I 1 OK
TW4-70 Nitrate + Nitrite as N 0.500 mg/L 5 0.1 OK
TW4-75 Chloride 1.00 mg/L 1 1 OK
TW4-75 Carbon Tetrachloride 1.0 ug/L u I 1 OK
TW4-75 Chloroform 1.0 ug/L 1 1 OK
TW4-75 Chloromethane 1.0 ug/L u I 1 OK
TW4-75 Methylene Chloride 1.0 ug/L u I 1 OK
TW4-75 Nitrate+ Nitrite as N 0.100 mg/L 1 0.1 OK
1-6 Trip Blank Evaluation
Lab Report Constituent Result
Carbon tetrachloride ND ug/L
23F1268 Chloroform ND ug/L
Chloromethane ND ug/L
Methylene chloride ND ug/L
Carbon tetrachloride ND ug/L
23F1372 Chloroform ND ug/L
Chloromethane ND ug/L
Methylene chloride ND ug/L
Carbon tetrachloride ND ug/L
23F1815 Chloroform ND ug/L
Chloromethane ND ug/L
Methylene chloride ND ug/L
I-7 QA/QC Evaluation for Sample Duplicates
Constituent
Chloride (mg/L)
Nitrate+ Nitrite (as N)
Carbon Tetrachloride
Chloroform
Chloromethane
Dichloromethane (Methylene Chloride)
Constituent
Chloride (mg/L)
Nitrate+ Nitrite (as N)
Carbon Tetrachloride
Chloroform
Chloromethane
Dichloromethane (Methylene Chloride)
Constituent
Chloride (mg/L)
Nitrate+ Nitrite (as N)
Carbon Tetrachloride
Chloroform
Chloromethane
Dichloromethane (Methylene Chloride)
RPD = Relative Percent Difference
ND = The analyte was not detected
TW4-42 TW4-65
20.9 22.7
3.14 3.20
ND ND
ND ND
ND ND
ND ND
TW4-38 TW4-70
36.3 40.6
8.20 8.14
ND ND
ND ND
ND ND
ND ND
TW4-09 TW4-75
38.0 38.0
0.742 0.733
ND ND
5.0 4.8
ND ND
ND ND
Highlighted cells indicate an RPD that exceeded the 20% RPD criteria
%RPO
8.3
1.9
NC
NC
NC
NC
%RPO
11.2
0.7
NC
NC
NC
NC
%RPO
0.0
1.2
NC
4.1
NC
NC
1-8 QC Control Limits for Analysis and Blanks
Method Blank Detections
All Method Blanks (MB) for the quarter were nondetect.
M t . S "k o/o R a nx >Pl e o ecovenes
MS MSD
Lab Report Lab Sample ID Well Analyte %REC %REC REC Range RPD RPDRange
23Fl268 BXF0844 NIA Chloride 84.5 78.8 80-120 0.950 20
NIA= QC was not performed on an EFRJ sample.
Laboratory Control Sample
Lab Report Analyte LCS%REC RECRan2e
23Fl372 Carbon Tetrachloride 131 70-130
23Fl372 Chloromethane 66.1 70-130
S o/o R urrogate 0 .ecovery
Surrogate
Lab Report Analyte Recovery% REC Ranee
23Fl815 4-Bromofluorobenzene 133 71.4-125
23Fl815 4-Bromofluorobenzene 141 71.4-125
I-9 Rinsate Evaluation
Rinsate
Rinsate Result
Sample Parameter (ug!L) Previous Well Purged
TW4-03R Chloroform 2.0 NA
TW4-08R Chloroform 1.8 TW4-06 ( 2.3 ug/L)
NA = This rinsate sample was collected prior to the first use of the pump.
Tab J
Kriged Current Quarter Chloroform Isoconcentration Map
NS
~-21
ND
MWe.-Oi
ND • MW-18
mb;indon;d
0, ' •~-QS
N06 \"$
TWN:20 lWN . .07.
t/!i • TWN-'1.8
NS.
1TWN.03 --·~.~ TWN.02·
· . ., -er ·· ...... ,~-.. i
0$
l'WN-06
l1111'1ru'"td
TW~.da
•IIAl1,l!ori~ • 0 • lWN-15
ndoMd
fWNc1()
aballdonlld • ,w,,u,
blondonud
TWN-lle
!IIS
PIEZ.01
No
MW.ft
A~n~onCld
TW~-12
• ' -oNS MWt02 "1\V-'1~\
240 2180 o o.bna o9 ·'l'W4-37,f.W4-20 ' 'll8160 '4-38
0 TW4-12
~
MW•3A
<!~ t,1W4~
EXPLANATION
~
MW-2'0
NS = not sampled; ND = not detected
......_ 70 kriged chloroform isocon and label
MW-41B perched monitoring well
-¢-NS installed April, 2023 showing
TW4-43
~ND
TWN-21
[]NS
TW4-42
¢ND
MW-32
e ND
TW4-7
0 706
TWN-1
<>NS
PIEZ-1
'-NS
concentration in µg/L
temporary perched monitoring well
installed September, 2021 showing
concentration in µg/L
temporary perched nitrate monitoring
well installed April, 2021 (not sampled)
temporary perched monitoring well
installed April, 2019 showing
concentration in µg/L
perched monitoring well showing
concentration in µg/L
temporary perched monitoring well
showing concentration in µg/L
temporary perched nitrate monitoring
well (not sampled)
perched piezometer (not sampled)
ND • MW:29
~.
ND • MW-38
ND • MW:31
..
l!!NO
TWIIC2l ~J"32
·~:"f_ .8 11 · TW'-1'3 ~;p ' ~· L ' ' cNO
;.:rw 1-1/ . .0• ' 0
.... , • , ..... 4-0~
••o , .... ~.. ,~~a ~'-36 r. -· .... +01 M,w,u_• . ., fo~
~.. °'.'tw~4d°iwM1,.No
' ' 19&0 "l'Wi4,1' " ,.
+·"' . • 1W'-08' ~20 TW4-27,'t:W4-31 l&L -.'.JY-14-33 J ciNO
TW4•ffi' •.~ D Q'•-"iw4-43
10 TW.4-35"" , TW•i.34
ND • MW-40
MW-39
tt. NO • MW,.22
1 mile
NOTES: MW-4, MW-26, TW4-1, TW4-2, TW4-4, TW4-11, TW4-19, TW4-21, TW4-37, TW4-39, TW4-40 and TW4-41 are
chloroform pumping wells; TW4-22, TW4-24, TW4-25 and TWN-2 are nitrate pumping wells; MW-24A Installed December, 2019
HYDRO
GED
CHEM.INC.
KRIGED 2nd QUARTER, 2023 CHLOROFORM (1,1g/L)
WHITE MESA SITE
/\PPROVED DATE REFERENCE
H:/718000/aug23/chloroform/Uchl0623.srf
FIGURE
J-1
TWN~3
ONS
,.
rTWN-02 ON~S' n r-
TW4-24
0 59
'
EXPLANATION
r
l I
r
-:---
~ TW4-25 -.-~ 'O NO
0
JTWN-01 .. ONS
TW
TW'\-33tw4.27 CJ ' '/,;"\. -rw·4 .,.1 2 ~ & ,,<;) -~
3 ND
TW4-29 OTW4-30
0 , '47 .
49Jlrw4.3,-W4-43
©Nn ~
TW4-34
0
1
NS = not sampled; ND = not detected
..._
TW4-43
~ND
TW4-42
QND
MW-32
.ND
TW4-7
0 706
PIEZ-2
" NS
kriged chloroform isocon and label
temporary perched monitoring well
installed September, 2021 showing
concentration in µg/L
temporary perched monitoring well
installed April, 2019 showing
concentration in µg/L
perched monitoring well showing
concentration (µg/L)
temporary perched monitoring well
showing concentration (µg/L)
perched piezometer (not sampled)
NOTES: MW-4, MW-26, TW4-1, TW4-2, TW4-4, TW4-11, TW4-19, TW4-21, TW4-37, TW4-39, TW4-40 and TW4-41 are
chloroform pumping wells; TW4-22, TW4-24, TW4-25 and TWN-2 are nitrate pumping wells
HYDRO
GE□
CHEM.INC.
KRIGED 2nd QUARTER, 2023 CHLOROFORM (µg/L)
WHITE MESA SITE
(detail map)
APPROVED DATE REFERENCE FIGURE
H:/718000/aug23/chloroform/Uch0623det.srf I J-2
rwa-24
0 59
'
NS = not sampled; ND= not detected
...._
TW4-43
~ND
TW4-42
¢ND
MW-32
.ND
TW4-7
0 706
PIEZ-2
'-NS
kriged chloroform isocon and label
temporary perched monitoring well
installed September, 2021 showing
concentration in µg/L
temporary perched monitoring well
installed April, 2019 showing
concentration in µg/L
perched monitoring well showing
concentration (µg/L)
temporary perched monitoring well
showing concentration (µg/L)
perched piezometer (not sampled)
·l't:
c~
-TW4-25 ,. 'd ND
•-.J
ll-1t;
ftifa"' ,• 04850
816r:l,0 'r ~ .. 20~ ~:f' Oall · -' v,v~-3·7 ,_ nd· ... _ -~ ,~
t ~
TW4-18
·•N~27
tu ,{i)TW4-31
3 N
4-29 OTW4-30 o , I 47
4$l~41..:3,W~
oNn * '4-34 -
0
1
NOTES: MW-4, MW-26, TW4-1, TW4-2, TW4-4, TW4-11, TW4-19, TW4-21, TW4-37, TW4-39, TW4-40 and TW4-41 are
chloroform pumping wells; TW4-22, TW4-24, TW4-25 and TWN-2 are nitrate pumping wells
HYDRO
GED
CHEM, INC.
2nd QUARTER, 2023 CHLOROFORM
GREATER THAN OR EQUAL TO 70 µg/L GRID
WHITE MESA SITE
APPROVED DATE REFERENCE FIGURE
H :/718000/aug23/ch loroform/Uch0623ge 70.srf J-3
TabK
Analyte Concentration Data and Chloroform Concentration Trend Graphs over Time
Chloroform Carbon Chloromethane Methylene Nitrate Chloride MW-4 Tetrachloride (ug/1) (ue(l) (ug/1) Chloride (ug/1) (mg/I) (mg/I)
28-Sep-99 6200
28-Sep-99 5820
28-Sep-99 6020
15-Mar-00 5520
15-Mar-00 5430
2-Sep-00 5420 9.63
30-Nov-00 6470 9.37
29-Mar-01 4360 8.77
22-Jun-0l 6300 9.02
20-Sep-0l 5300 9.45
8-Nov-01 5200 8
26-Mar-02 4700 8.19
22-May-02 4300 8.21
12-Sep-02 6000 8.45
24-Nov-02 2500 8.1
28-Mar-03 2000 8.3
30-Apr-03 3300 NA
30-May-03 3400 8.2
23-Jun-03 4300 8.2
30-Jul-03 3600 8.1
29-Aug-03 4100 8.4
12-Sep-03 3500 8.5
l 5-Oct-03 3800 8.1
8-Nov-03 3800 8
29-Mar-04 NA NA
22-Jun-04 NA NA
l 7-Sep~04 3300 6.71
l 7-Nov-04 4300 7.5
16-Mar-05 2900 6.3
25-May-05 3170 NA NA NA 7.1 NA
3 l-Aug-05 3500 <IO <IO <10 7.0 NA
l-Dec-05 3000 <50 <50 <50 7.0 NA
9-Mar-06 3100 <50 <50 50 6 49
14-Jun-06 3000 <50 <50 50 6 49
20-Jul-06 2820 <50 <50 <50 1.2 48
9-Nov-06 2830 2.1 1.4 <I 6.4 50
28-Feb-07 2300 1.6 <I <I 6.3 47
27-Jun-07 2000 1.8 <I <I 7 45
15-Aug-07 2600 1.9 <I <I 6.2 47
I 0-Oct-07 2300 1.7 <I <l 6.2 45
26-Mar-08 2400 1.7 <l <l 5.8 42
25-Jun-08 2500 1.6 <l <l 6.09 42
10-Sep-08 1800 1.8 <l <I 6.36 35
15-Oct-08 2100 1.7 <1 <I 5.86 45
Chloroform Carbon Chloromethane Methylene Nitrate Chloride MW-4 Tetrachloride (ug/1) (ue/1) (ug/1) Chloride (ug/1) (mg/I) (mg/I)
4-Mar-09 2200 l.5 <I <I 5.7 37
23-Jun-09 1800 1.3 <I <I 5.2 34
14-Sep-09 2000 1.4 <l <l 5.3 43
14-Dec-09 1800 1.6 ND ND 5.8 44
17-Feb-l0 1600 1.2 ND ND 4 45
14-Jun-l 0 2100 1.2 ND ND 5.1 41
16-Aug-l0 1900 1.5 ND ND 4.8 38
11-Oct-10 1500 1.4 ND ND 4.9 41
23-Feb-11 1700 l.5 ND ND 4.6 40
I-Jun-I I 1700 l.4 ND ND 4.9 35
17-Aug-ll 1700 I.I ND ND 4.9 41
16-Nov-l I 1600 l.3 ND ND 5.1 40
23-Jan-12 1500 I ND ND 4.8 41
6-Jun-12 1400 1.2 ND ND 4.9 39
4-Sep-12 1500 1.5 ND ND 5 41
4-Oct-12 1300 I ND ND 4.8 42
I I-Feb-13 1670 1.49 ND ND 4.78 37.8
5-Jun-13 1490 1.31 ND ND 4.22 44
3-Sep-13 1520 1.13 ND ND 4.89 41.4
29-Oct-13 1410 5.58 ND ND 5.25 40.1
27-Jan-14 1390 4.15 ND ND 4.7 38.5
19-May-14 1390 5.21 ND ND 4.08 39.9
24-Aug-14 1490 ND 7.6 ND 3.7 41
2 I-Oct-14 1440 ND ND ND 5.07 41.5
9-Mar-15 1400 1.26 ND ND 5.75 40.7
8-Jun-15 1300 ND ND ND 2.53 43.1
3 I-Aug-15 1290 ND ND ND 4.79 44.3
I 9-Oct-15 1200 ND ND ND 4.43 40.8
9-Mar-16 1240 ND ND ND 5.15 42.2
23-May-16 1580 1.44 ND ND 4.54 43.7
25-Jul-16 1430 ND ND ND 4.95 42.5
I 2-Oct-16 1470 1.24 ND ND 4.88 44.8
8-Mar-17 1450 1.22 ND ND 4.99 43.3
13-Jun-l 7 1430 1.15 ND ND 4.88 44.0
26-Jul-l 7 1400 1.15 ND ND 4.59 43.8
I I-Oct-17 1320 ND ND ND 5.25 43.8
12-Mar-18 1320 1.07 ND ND 4.47 46.2
8-Jun-18 1240 ND ND ND 4.64 43.5
22-Aug-18 1300 ND ND ND 4.55 48.5
28-Nov-18 1330 ND ND ND 4.44 43.1
8-Mar-19 1190 ND ND ND 5.05 41.5
5-Jun-19 1300 ND ND ND 5.16 40.6
4-Sep-19 1180 ND ND ND 4.69 41.9
I I-Dec-19 1370 ND ND ND 4.34 45.5
Chloroform Carbon Chloromethane Methylene Nitrate~ Chloride MW-4 Tetrachloride (ug/1) (:u!!/1) (ug/1) Chloride (ug/1) (mg/I) (mg/I)
19-Feb-20 1230 ND ND ND 6.22 48.1
27-May-20 1250 ND ND ND 5.04 40.7
4-Sep-20 1240 ND ND ND 4.93 43.8
28-Oct-20 1050 ND ND ND 4.62 41.4
23-Feb-21 1150 ND ND ND 4.61 46.5
9-Jun-21 1320 ND ND ND 6.48 34.8
24-Aug-21 1140 ND ND ND 3.83 43.2
l-Dec-21 1100 ND ND ND 4.9 47.6
9-Mar-22 1040 ND ND ND 4.8 40.9
8-Jun-22 1010 ND ND ND 3.9 43.7
30-Aug-22 1200 ND ND ND 4.20 44.7
30-Nov-22 1170 ND ND ND 4.05 35.9
7-Mar-23 1010 ND ND ND 4.44 29.4
13-Jun-23 1050 ND 2.0 ND 4.20 37.0
0
....,.
0 0 0
N
0 0 0
(ug/L)
(.,.)
0 0 0
~
0 0
0
01
0 0 0
O')
0 0
0
-.J 0 0 0
Sep-99 +-----+---+-----+---+--,----+------.;.,...,__-----i
Mar-00 -
Sep-00
Mar-01 -
Sep-01
Mar-02
Sep-02
E~t I f 111": Mar-05
Sep-05
Mar-06
Sep-06
Mar-07
Sep-07
Mar-08
Sep-08
Mar-09
Sep-09
Mar-10
Sep-10
Mar-11
Sep-11
Mar-12
Sep-12
Mar-13
Sep-13
Mar-14
Sep-14
Mar-15
Sep-15
Mar-16
Sep-16
Mar-17
Sep-17
Mar-18
Sep-18
Mar-19
Sep-19
Mar-20
Sep-20
Mar-21
Sep-21
Mar-22
Sep-22 -
Mar-23 L...Jl~-~---L------'----'-----'----~--~
s;:
i I ()
:J"
0 a o' -,
3
~
C CD CJ)
Chloroform Carbon Chloromethane Methylene Nitrate Chloride TW4-1 (ug/1) Tetrachloride (ug/1) Chloride (mg/I) (mg/I) (ug/1) (ug/1)
28-Jun-99 1700 7.2
10-Nov-99 5.8
15-Mar-00 I 100
10-Apr-00 1490
6-Jun-00 1530
2-Sep-00 2320 5.58
30-Nov-00 3440 7.79
29-Mar-0l 2340 7.15
22-Jun-0l 6000 8.81
20-Sep-0l 12.8
8-Nov-01 3200 12.4
26-Mar-02 3200 13.1
22-May-02 2800 12.7
12-Sep-02 3300 12.8
24-Nov-02 3500 13.6
28-Mar-03 3000 12.4
23-Jun-03 3600 12.5
12-Sep-03 2700 12.5
8-Nov-03 3400 11.8
29-Mar-04 3200 11
22-Jun-04 3100 8.78
l 7-Sep-04 2800 10.8
l 7-Nov-04 3000 11.1
16-Mar-05 2700 9.1
25-May-05 3080 NA NA NA 10.6 NA
3 l-Aug-05 2900 <IO <10 <IO 9.8 NA
l-Dec-05 2400 <50 <50 <50 9.7 NA
9-Mar-06 2700 <50 <50 <50 9.4 49
14-Jun-06 2200 <50 <50 <50 9.8 48
20-Jul-06 2840 <50 <50 <50 9.7 51
8-Nov-06 2260 1.4 <I <I 9.4 47
28-Feb-07 1900 1.2 <I <I 8.9 47
27-Jun-07 1900 1.4 <I <I 9 45
15-Aug-07 2300 1.3 <I <I 8.4 43
10-Oct-07 2000 1.3 <I <I 7.8 43
26-Mar-08 2000 1.3 <I <I 7.6 39
25-Jun-08 1900 I.I <I <I 8.68 39
10-Sep-08 1700 1.3 <I <I 8.15 35
l 5-Oct-08 1700 1.3 <I <I 9.3 41
Chloroform Carbon Chloromethane Methylene Nitrate Chloride TW4-1 (ug/1) Tetrachloride (ug/1) Chloride (mg/I) (mg/I) (ug/1) (ug/1)
11-Mar-09 1700 1.1 <1 <1 7.5 37
24-Jun-09 1500 1 <1 <1 6.9 37
15-Sep-09 1700 <1 <1 <1 7.3 36
29-Dec-09 1400 <l <1 <l 6.8 41
3-Mar-10 1300 <1 <1 <1 7.1 35
15-Jun-10 1600 1.2 <1 <1 6.8 40
24-Aug-10 1500 <1 <1 <l 6.8 35
14-Oct-10 1500 <1 <1 <1 6.6 40
24-Feb-l 1 1300 ND ND ND 6.6 41
1-Jun-11 1200 ND ND ND 7 35
18-Aug-11 1300 ND ND ND 6.8 36
29-Nov-11 1300 ND ND ND 6.6 37
19-Jan-12 1300 ND ND ND 6.8 38
14-Jun-12 1000 ND ND ND 7.1 42
13-Sep-12 1000 ND ND ND 5 39
4-Oct-12 1100 ND ND ND 6.5 40
lJ-Feb-13 1320 3.66 ND ND 6.99 37.6
19-Jun-13 1100 ND ND ND 6.87 39.1
12-Sep-13 1150 ND ND ND 7.12 37.6
14-Nov-13 1280 ND ND ND 7.08 36.5
5-Feb-14 1090 5.47 ND ND 7.74 38.9
23-May-14 1020 4.77 ND ND 6.93 37.4
27-Aug-14 845 ND 1.4 ND 4.8 38
29-Oct-14 1140 ND ND ND 6.31 38.7
9-Mar-15 1130 ND ND ND 7.06 38.3
8-Jun-15 1260 ND ND ND 6.07 40.3
31-Aug-15 1060 ND ND ND 6.28 45.9
19-Oct-15 1040 ND ND ND 1.55 38.5
9-Mar-16 974 ND ND ND 0.148 41.7
23-May-16 1140 ND ND ND 0.138 44.4
25-Jul-16 1160 ND ND ND 5.49 44.7
13-Oct-16 1330 ND ND ND 0.746 44.2
8-Mar-17 519 ND ND ND 4.44 41.5
13-Jun-17 977 ND ND ND 5.74 41.8
26-Jul-17 958 ND ND ND 5.04 42.8
11-Oct-17 556 ND ND ND 5.78 38.5
12-Mar-18 70.4 ND ND ND 4.84 45.8
8-Jun-18 942 ND ND ND 4.38 42.0
22-Aug-18 1010 ND ND ND 4.30 47.3
Chloroform Carbon Cbloromethane Methylene Nitrate Chloride TW4-1 (ug/1) Tetrachloride (ug/1) Chloride (mg/I) (mg/I) (ug/1) (ug/1)
22-Oct-l 8 752 ND ND ND 4.57 43.2
8-Mar-19 87.2 ND ND ND 4.51 40.9
5-Jun-19 1040 ND ND ND 1.43 44.8
4-Sep-19 894 ND ND ND 1.65 46.0
1 0-Dec-19 1070 ND ND ND 3.91 44.2
19-Feb-20 1190 ND ND ND 4.67 47.5
27-May-20 499 ND ND ND 0.443 46.4
4-Sep-20 1060 ND ND ND 2.22 43.7
28-Oct-20 924 ND ND ND 4.30 41.9
23-Feb-21 948 ND ND ND 27.2 45.4
9-Jun-21 957 ND ND ND 0.728 37.2
24-Aug-21 821 ND 1.18 ND 1.38 44 .5
l-Dec-2 I 957 ND ND ND 4.37 45.5
9-Mar-22 946 ND ND ND 3.9 42.6
8-Jun-22 914 ND ND ND 0.18 45.5
30-Aug-22 954 ND ND ND 0.420 45.1
30-Nov-22 1010 ND ND ND 3.62 38.2
7-Mar-23 928 ND ND ND 1.71 43.8
13-Jun-23 830 ND 1.1 ND 3.87 42.5
...... l'v 0 0 0 0 0 0 0
28-Jun-99 -
28-Dec-99
28-Jun-00 -
28-Dec-00
28-Jun-01
28-Dec-01 -
28-Jun-02
28-Dec-02
28-Jun-03
28-Dec-03
28-Jun-04
28-Dec-04
28-Jun-05
28-Dec-05
28-Jun-06
28-Dec-06
28-Jun-07
28-Dec-07
28-Jun-08
28-Dec-08
28-Jun-09
28-Dec-09
28-Jun-10
28-Dec-10
28-Jun-11
28-Dec-11
28-Jun-12
28-Dec-12
28-Jun-13
28-Dec-13
28-Jun-14
28-Dec-14
28-Jun-15
28-Dec-15
28-Jun-16
28-Dec-16
28-Jun-17
28-Dec-17
28-Jun-18
28-Dec-18
28-Jun-19
28-Dec-19
28-Jun-20
28-Dec-20
28-Jun-21
28-Dec-21
28-Jun-22
28-Dec-22
28-Jun-23
(ug/L)
(,)
0 0 0
~ 0 0 0
U'I 0 0 0
0)
0 0 0
----1 0 0 0
i I ..a.
0 :r
0 a o'
""I 3
< I»
C Cl)
UI
Chloroform Carbon Chloromethane Methylene Nitrate Chloride TW4-2 (ug/1) Tetrachloride (ug/1) Chloride (mg/I) (mg/I) (02/1) (u2/l)
10-Nov-99 2510
2-Sep-00 5220
28-Nov-00 4220 10.7
29-Mar-01 3890 10.2
22-Jun-01 5500 9.67
20-Sep-0l 4900 11.4
8-Nov-01 5300 10.1
26-Mar-02 5100 9.98
23-May-02 4700 9.78
12-Sep-02 6000 9.44
24-Nov-02 5400 10.4
28-Mar-03 4700 9.5
23-Jun-03 5100 9.6
12-Sep-03 3200 8.6
8-Nov-03 4700 9.7
29-Mar-04 4200 9.14
22-Jun-04 4300 8.22
17-Sep-04 4100 8.4
l 7-Nov-04 4500 8.6
16-Mar-05 3700 7.7
25-May-05 3750 8.6
31-Aug-05 3900 <10 <10 <10 8 NA
l-Dec-05 3500 <50 <50 <50 7.8 NA
9-Mar-06 3800 <50 <50 <50 7.5 56
14-Jun-06 3200 <50 <50 <50 7.1 56
20-Jul-06 4120 <50 <50 <50 7.4 54
8-Nov-06 3420 2.3 <1 <l 7.6 55
28-Feb-07 2900 1.8 <l <I 7.3 54
27-Jun-07 3000 2.5 <l <l 7.8 50
15-Aug-07 340 2.2 <l <l 7.3 49
10-Oct-07 3200 2.1 <l <l 6.9 51
26-Mar-08 3300 2.3 <l <l 6.9 48
25-Jun-08 3100 2.2 <l <l 7.44 46
10-Sep-08 2800 2.4 <l <l 7.1 42
15-Oct-08 3200 2.4 <2 <2 7.99 47
l l-Mar-09 3100 2.2 <l <l 6.5 46
24-Jun-09 2800 2 <l <l 6.4 44
l 5-Sep-09 3000 2 <l <l 6.6 43
29-Dec-09 1600 2 <l <l 6.4 46
Chloroform Carbon Chloromethane Methylene Nitrate Chloride TW4-2 (og/1) Tetrachloride (og/1) Chloride (mg/I) (mg/I) (owl) (owl)
3-Mar-10 2600 z <1 <1 6.8 42
15-Jun-10 3300 2.6 <1 <1 6.7 43
16-Aug-10 3300 2.5 <1 <1 6.6 43
14-Oct-10 3000 2.1 <I <1 6.5 41
24-Feb-11 3100 2.4 ND ND 7 46
2-Jun-11 3000 2.2 ND ND 6.8 42
17-Aug-11 2400 1.6 ND ND 6 48
29-Nov-11 3900 2.8 ND ND 7 49
24-Jan-12 2500 2 ND ND 7.1 49
14-Jun-12 2500 2.1 ND ND 7.7 52
13-Sep-12 2900 1.8 ND ND 4 76
4-Oct-12 3100 2 ND ND 7.6 49
13-Feb-13 3580 5.17 ND ND 8.1 46
19-Jun-13 3110 2.65 ND ND 7.51 46.9
12-Sep-13 3480 2.41 ND ND 9.3 44.9
14-Nov-13 3740 3.15 ND ND 8.39 43.9
6-Feb-14 3180 7.1 ND ND 7.87 45.9
23-May-14 2930 6.05 ND ND 9.11 45.4
27-Aug-14 3170 1.4 3.6 ND 6.2 45
30-Oct-14 3580 2.6 ND ND 8.45 45.5
9-Mar-15 1840 1.44 ND ND 5.32 44.9
8-Jun-l 5 1650 ND ND ND 4.3 48. l
31-Aug-15 1310 ND ND ND 3.76 50.0
19-Oct-15 2070 ND ND ND 5.18 41.9
9-Mar-16 1970 1.20 ND ND 5.30 43.4
23-May-16 2070 1.49 ND ND 5.67 43.8
25-Jul-16 1780 ND ND ND 4.07 42.9
12-Oct-16 1600 ND ND ND 6.07 44.3
8-Mar-17 1570 ND ND ND 4.74 43 .1
13-Jun-17 1940 ND ND ND 4.90 43 .6
26-Jul-17 1310 ND ND ND 5.08 43.2
l l-Oct-17 1610 ND ND ND 3.28 43.5
12-Mar-18 764 ND ND ND 2.94 44.4
8-Jun-18 949 ND ND ND 3.50 41.3
22-Aug-18 980 ND ND ND 4.83 44.3
28-Nov-18 822 ND ND ND 3.52 41.7
8-Mar-19 1040 ND ND ND 3.92 40.4
5-Jun-19 1360 ND ND ND 4.38 39.8
4-Sep-19 797 ND ND ND 4.79 40.8
Chloroform Carbon Chloromethane Methylene Nitrate Chloride TW4-2 (ug/1) Tetrachloride (ug/1) Chloride (mg/I) (mg/I) (u2'1.) (u2'1.)
10-Dec-19 934 ND ND ND 3.40 41.5
19-Feb-20 1880 ND ND ND 6.07 42.1
27-May-20 1070 ND ND ND 3.62 40.6
4-Sep-20 1260 ND ND ND 3.35 41.3
28-Oct-20 1130 ND ND ND 2.34 38.7
23-Feb-21 939 ND ND ND 3.30 43.3
9-Jun-21 1160 ND ND ND 3.89 32.5
24-Aug-21 1150 ND ND ND 1.97 36.8
l-Dec-21 852 ND ND ND 3.49 41.9
9-Mar-22 1020 ND ND ND 3.3 36.7
8-Jun-22 892 ND ND ND 3.1 39.5
30-Aug-22 832 ND ND ND 3.07 40.7
30-Nov-22 1030 ND ND ND 3.74 35.5
7-Mar-23 772 ND ND ND 2.03 41.4
13-Jun-23 788 ND 1.2 ND 3.70 38.1
(ug/L)
Nov-99 ..-----,----,---.......,_=----.----"TT------.------,
May-00
Nov-00
May-01
Nov-01 -
May-02
Nov-02 •·
May-03 -
Nov-03 -
May-04
Nov-04
May-05 -
Nov-05
May-06 -
Nov-06
May-07 ··
Nov-07
May-08
Nov-08
May-09
Nov-09
May-10 -
Nov-10 ·
May-11
Nov-11 -
May-12
Nov-12 -
May-13 -
Nov-13 -
May-14 •
Nov-14
May-15
Nov-15 -
May-16
Nov-16
May-17
Nov-17
May-18
Nov-18
May-19
Nov-19
May-20
Nov-20
May-21 ·
Nov-21
May-22 •
Nov-22
9:ii>~oO cO-CD _Ill
g-Q-<"~iii
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May-23 ,__---.-----+-----+-----+----+--------+-----------1
0 -'-0 0 0
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Chloroform Carbon Chloromethane Methylene Nitrate Chloride TW4-3 (ug/1) Tetrachloride (ug/1) Chloride (mg/I) (mg/I) (Ul!/1) (ue/1)
28-Jun-99 3500 7.6
29-Nov-99 702
15-Mar-00 834
2-Sep-00 836 1.56
29-Nov-00 836 1.97
27-Mar-0l 347 1.85
21-Jun-01 390 2.61
20-Sep-0l 300 3.06
7-Nov-01 170 3.6
26-Mar-02 11 3.87
21-May-02 204 4.34
12-Sep-02 203 4.32
24-Nov-02 102 4.9
28-Mar-03 0 4.6
23-Jun-03 0 4.8
12-Sep-03 0 4.3
8-Nov-03 0 4.8
29-Mar-04 0 4.48
22-Jun-04 0 3.68
17-Sep-04 0 3.88
17-Nov-04 0 4.1
16-Mar-05 0 3.5
25-May-05 <1 NA NA NA 3.7 NA
31-Aug-05 <I <1 6.4 <1 3.5 NA
1-Dec-05 <1 <1 2.3 <1 3.3 NA
9-Mar-06 <1 <I 2.2 <1 3.3 26
14-Jun-06 <1 <I <l <l 3.2 26
20-Jul-06 <1 <I 1.6 <l 2.9 26
8-Nov-06 <l <I <l <1 1.5 23
28-Feb-07 <l <l <l <l 3.1 22
27-Jun-07 <l <l <l <l 3.3 23
15-Aug-07 <1 <1 <1 <l 3.1 24
10-Oct-07 <1 <l <1 <1 2.8 27
26-Mar-08 <l <l <l <I 2.8 21
25-Jun-08 <l <l <1 <l 2.85 19
10-Sep-08 <l <l <l <I 2.66 19
15-Oct-08 <l <1 <l <l 2.63 22
4-Mar-09 <l <l <l <l 2.5 21
24-Jun-09 <l <l <l <l 2.9 20
15-Sep-09 <l <l <1 <l 2.8 21
16-Dec-09 <l <l <l <l 2.5 22
Chloroform Carbon Chloromethane Methylene Nitrate Chloride TW4-3 (og/1) Tetrachloride (og/1) Chloride (mg/I) (mg/I) (02/1) (02/1)
23-Feb-10 <l <l <1 <l 2.8 23
8-Jun-10 <l <1 <I <1 3 24
10-Aug-10 <l <I <l <1 3.1 22
5-Oct-l 0 <l <1 <I <1 3.3 26
15-Feb-l 1 ND ND ND ND 3.5 23
25-May-1 l ND ND ND ND 3.7 23
16-Aug-l 1 ND ND ND ND 4 23
15-Nov-l 1 ND ND ND ND 4.4 23
17-Jan-12 ND ND ND ND 4.3 21
31-May-12 ND ND ND ND 4.4 24
29-Aug-12 ND ND ND ND 4.9 25
3-Oct-12 ND ND ND ND 4.8 25
7-Feb-13 ND ND ND ND 5.05 23.7
29-May-13 ND ND ND ND 5.83 23.8
29-Aug-13 ND ND ND ND 6.26 24.0
6-Nov-13 ND ND ND ND 5.89 24.1
22-Jan-14 ND ND ND ND 6.66 24.9
19-May-14 ND ND ND ND 6.01 24.4
13-Aug-14 ND ND ND ND 5.3 26
23-Oct-14 ND ND ND ND 6.07 26.7
l l-Mar-15 ND ND ND ND 6.64 26.2
10-Jun-l 5 ND ND ND ND 5.71 27.5
2-Sep-15 ND ND ND ND 3.88 27.4
21-Oct-15 ND ND ND ND 5.37 25.6
15-Mar-16 ND ND ND ND 5.83 32.8
25-May-16 ND ND ND ND 5.65 27.9
27-Jul-16 ND ND ND ND 6.10 26.5
19-Oct-16 ND ND ND ND 6.00 29.5
14-Mar-17 ND ND ND ND 6.18 28.1
14-Jun-17 ND ND ND ND 6.36 28.7
27-Jul-17 ND ND ND ND 6.36 28.5
10-Oct-l 7 ND ND ND ND 6.32 25.9
14-Mar-18 ND ND ND ND 6.46 29.8
12-Jun-18 ND ND ND ND 6.52 26.1
29-Aug-18 ND ND ND ND 5.53 31.0
30-Nov-18 ND ND ND ND 5.85 27A
13-Mar-19 ND ND ND ND 5.82 25.5
13-Jun-19 ND ND ND ND 6.68 27.4
1 l-Sep-19 ND ND ND ND 5.12 26.0
12-Dec-19 ND ND ND ND 5.91 28.0
17-Mar-20 ND ND ND ND 6.15 27.7
Chloroform Carbon Chloromethane Methylene Nitrate Chloride TW4-3 (ug/1) Tetrachloride (ug/1) Chloride (mg/I) (mg/I) (:u2/l) (02/1)
10-Jun-20 ND ND ND ND 6.53 26.2
17-Sep-20 ND ND ND ND 6.36 25.9
4-Nov-20 ND ND ND ND 6.02 24.9
17-Mar-21 ND ND ND ND 6.19 28.4
15-Jun-21 ND ND ND ND 8.04 27.0
15-Sep-21 ND ND ND ND 5.28 20.3
7-Dec-21 ND ND ND ND 5.97 26.2
15-Mar-22 ND ND ND ND 6.1 24.3
15-Jun-22 ND ND ND ND 5.8 26.7
13-Sep-22 ND ND ND ND 5.47 27.3
7-Dec-22 ND ND ND ND 6.64 21.5
22-Mar-23 ND ND ND ND 6.09 20.6
15-Jun-23 ND ND ND ND 6.38 23.5
Jun-99
Dec-99
Jun-00
Dec-00
Jun-01
Dec-01
Jun-02
Dec-02
Jun-03
Dec-03
Jun-04
Dec-04
Jun-05
Dec-05
Jun-06
Dec-06
Jun-07
Dec-07
Jun-08
Dec-08
Jun-09
Dec-09
Jun-10
Dec-10
Jun-11
Dec-11
Jun-12
Dec-12
Jun-13
Dec-13
Jun-14
Dec-14
Jun-15
Dec-15
Jun-16
Dec-16
Jun-17
Dec-17
Jun-18
Dec-18
Jun-19
Dec-19
Jun-20
Dec-20
Jun-21
Dec-21
Jun-22
Dec-22
Jun-23
~ 0
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0, 0 0 0 0 0
0 0
(ug/L)
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Chloroform Carbon Chloromethane Methylene Nitrate Chloride TW4-4 (ug/1) Tetrachloride (ug/1) Chloride (mg/I) (mg/I) (ug/1) (ue/1)
6-Jun-00 0
2-Sep-00 0
28-Nov-00 3.9
28-Mar-Ol 2260 1.02
20-Jun-Ol 3100 14.5
20-Sep-01 3200 14
8-Nov-01 2900 14.8
26-Mar-02 3400 15
22-May-02 3200 13.2
12-Sep-02 4000 13.4
24-Nov-02 3800 12.6
28-Mar-03 3300 13.4
23-Jun-03 3600 12.8
12-Sep-03 2900 12.3
8-Nov-03 3500 12.3
29-Mar-04 3200 12.2
22-Jun-04 3500 12.1
l 7-Sep-04 3100 11.1
17-Nov-04 3600 10.8
16-Mar-05 3100 11.6
25-May-05 2400 NA NA NA 11.3 NA
3 l-Aug-05 3200 <10 <IO <10 9.9 NA
l-Dec-05 2800 <50 <50 <50 10.2 NA
9-Mar-06 2900 <50 <50 <50 9.5 51
14-Jun-06 2600 <50 <50 <50 8.6 48
20-Jul-06 2850 <50 <50 <50 9.7 50
8-Nov-06 2670 1.7 <1 <1 10.l 49
28-Feb-07 2200 1.5 <1 <1 9 49
27-Jun-07 2400 1.7 <1 <1 9.4 47
15-Aug-07 2700 1.5 <I <1 9.5 45
10-0ct-07 2500 1.5 <1 <1 9.5 47
26-Mar-08 2800 1.6 <I <1 9.2 43
25-Jun-08 2500 1.5 <1 <1 10.8 42
10-Sep-08 2200 1.4 <l <1 8.83 39
15-0ct-08 2500 2 <2 <2 10.1 44
4-Mar-09 2200 1.2 <1 <l 10.2 37
24-Jun-09 1800 1.2 <1 <l 8.2 34
l 5-Sep-09 2000 1.1 <l <l 8.4 39
29-Dec-09 950 1.1 <l <l 7.6 41
Chloroform Carbon Chloromethane Methylene Nitrate Chloride TW4-4 (ug/1) Tetrachloride (ug/1) Chloride (mg/I) (mg/I) I _(02/l) (owl}
17-Feb-10 1700 1 <l <1 6.6 48
I0-Jun-10 2000 1.2 <1 <1 7.6 35
16-Aug-10 2100 1.3 <1 <1 7.3 36
11-Oct-IO 1700 1.3 <1 <1 7.1 38
23-Feb-11 1800 1.4 ND ND 7 41
1-Jun-11 1700 1.2 ND ND 7 35
17-Aug-11 1500 ND ND ND 6.6 40
16-Nov-11 1500 1 ND ND 7 39
23-Jan-12 1200 ND ND ND 7.1 38
6-Jun-12 1500 ND ND ND 7.1 43
4-Sep-12 1600 1.2 ND ND 7.1 39
3-Oct-12 1400 1 ND ND 7 38
l l-Feb-13 1460 1.12 ND ND 7.36 39
5-Jun-13 1330 ND ND ND 6.3 39.6
3-Sep-13 1380 ND ND ND 7.22 38.8
29-Oct-13 1360 5.3 ND ND 7.84 43.9
27-Jan-14 1260 3.88 ND ND 7.28 37.4
19-May-14 1220 5 ND ND 5.91 47.5
l l-Aug-14 1320 ND 7 ND 5.30 40.0
21-Oct-14 1130 ND ND ND 7.02 40.0
9-Mar-15 1350 1 ND ND 7.70 37.6
8-Jun-15 1280 ND ND ND 6.33 41.3
31-Aug-15 1220 ND ND ND 6.45 45.8
19-Oct-15 1190 ND ND ND 6.27 38.5
9-Mar-16 1190 ND ND ND 6.71 39.7
23-May-16 1780 1 ND ND 6.56 41.9
26-Jul-16 1380 ND ND ND 7.22 40.2
13-Oct-16 1430 ND ND ND 6.77 42.3
8-Mar-17 1290 ND ND ND 6.87 41.7
13-Jun-l 7 1290 ND ND ND 7.06 40.7
26-Jul-17 1290 ND ND ND 6.47 -40.5
11-Oct-17 1290 ND ND ND 6.90 40.7
12-Mar-18 1160 ND ND ND 6.12 42.2
8-Jun-18 1050 ND ND ND 6.34 39.0
22-Aug-18 1030 ND ND ND 6.34 39.0
28-Nov-18 1140 ND ND ND 6.02 41.4
8-Mar-19 1050 ND ND ND 7.26 38.3
5-Jun-19 1070 ND ND ND 10.40 38.5
4-Sep-19 989 ND ND ND 6.32 39.8
Chloroform Carbon Chloromethane Methylene Nitrate Chloride TW4-4 (ug/1) Tetrachloride (ug/1) Chloride (mg/I) (mg/I) (ug/1) (u~/1)
10-Dec-l 9 1140 ND ND ND 6.52 40.4
19-Feb-20 1100 ND ND ND 4.58 43.4
27-May-20 1140 ND ND ND 7.26 46.1
4-Sep-20 1110 ND ND ND 7.04 40.0
28-Oct-20 979 ND ND ND 6.77 38.6
23-Feb-21 1130 ND ND ND 6.75 39.8
9-Jun-2 I 1240 ND ND ND 9.02 39.4
24-Aug-21 1100 ND ND ND 4.00 39.6
l-Dec-21 950 ND ND ND 7.32 42.5
9-Mar-22 1010 ND ND ND 6.6 37.1
8-Jun-22 1110 ND ND ND 6.0 39.9
30-Aug-22 1040 ND ND ND 6.65 41.0
30-Nov-22 1030 ND ND ND 6.59 29.6
7-Mar-23 945 ND ND ND 7.12 30.2
13-Jun-23 1980 ND 1.9 ND 6.82 39.7
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0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 LO 0 LO 0 LO 0 LO 0 LO
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(716n)
Chloroform Carbon Chloromethane Methylene Nitrate Chloride TW4-5 (ug/1) Tetrachloride (ug/1) Chloride (mg/I) (mg/I) (u2fl) (02/1)
20-Dec-99 29.5
15-Mar-00 49.0
2-Sep-00 124
29-Nov-00 255
28-Mar-0l 236
20-Jun-01 240
20-Sep-0l 240
7-Nov-01 260
26-Mar-02 260
22-May-02 300
12-Sep-02 330
24-Nov-02 260
28-Mar-03 240
23-Jun-03 290
12-Sep-03 200
8-Nov-03 240
29-Mar-04 210
22-Jun-04 200
17-Sep-04 150
l 7-Nov-04 180
16-Mar-05 120
25-May-05 113 NA NA NA 3.70 NA
31-Aug-05 82.0 <2.5 5.8 <2.5 6.00 NA
1-Dec-05 63.0 <2.5 2.5 <2.5 6.00 NA
9-Mar-06 66.0 <2.5 3.1 <2.5 6.00 52
14-Jun-06 51.0 <I <2.5 <2.5 5.90 51
20-Jul-06 53.7 <l <I <1 6.70 54
8-Nov-06 47.1 <l <I <1 2.90 55
28-Feb-07 33.0 <l <I <1 7.80 57
27-Jun-07 26.0 <l <l <I 7.00 45
15-Aug-07 9.2 <l <l <I 7.70 38
10-Oct-07 9.4 <l <l <I 8.20 39
26-Mar-08 11.0 <l <l <I 7.40 36
25-Jun-08 9.3 <l <l <I 8.70 37
10-Sep-08 11.0 <l <l <l 7.91 34
15-Oct-08 10.0 <l <l <1 9.30 37
4-Mar-09 12.0 <l <l <1 7.90 34
24-Jun-09 13.0 <l <l <l 7.50 37 .
15-Sep-09 12.0 <l <l <l 8.30 48
Chloroform Carbon Chloromethane Methylene Nitrate Chloride TW4-5 (ug/1) Tetrachloride (ug/1) Chloride (mg/I) (mg/I) (u2fl) (ue;/1)
22-Dec-09 8.5 <I <I <I 7.50 41
25-Feb-10 13.0 <I <I <I 6.80 43
9-Jun-10 12.0 <I <1 <1 7.10 28
I I-Aug-IO 12.0 <1 <1 <l 7.00 38
13-Oct-10 11.0 <1 <I <1 7.20 41
22-Feb-11 10.0 ND ND ND 7.00 34
26-May-11 9.0 ND ND ND 7.20 35
17-Aug-11 10.0 ND ND ND 7.50 37
7-Dec-11 7.9 ND ND ND 6.00 30
18-Jan-12 7.6 ND ND ND 5.80 22
6-Jun-12 8.4 ND ND ND 8.00 39
l l-Sep-12 12.0 ND ND ND 8.10 37
3-Oct-12 8.0 ND ND ND 7.70 38
13-Feb-13 10.8 ND ND ND 8.24 34.3
13-Jun-13 11.2 ND ND ND 10.70 36.5
5-Sep-13 11.6 ND ND ND 7.79 39.1
13-Nov-13 14.4 ND ND ND 7.75 41.1
30-Jan-14 12.5 ND ND ND 9.16 40.5
22-May-14 13.4 ND ND ND 7.78 51.4
14-Aug-14 12.0 ND ND ND 7.20 44
28-Oct-14 14.6 ND ND ND 8.31 45.1
12-Mar-15 13.8 ND ND ND 9.32 45.1
10-Jun-l 5 13.3 ND 1.07 ND 7.08 47.3
3-Sep-15 12.9 ND ND ND 8.10 52.2
28-Oct-15 11.0 ND ND ND 8.03 43.6
l 7-Mar-16 11.0 ND ND ND 10.20 44.7
26-May-16 13.6 ND ND ND 8.98 45.9
25-Jul-16 10.8 ND ND ND 8.49 44.6
26-Oct-16 10.8 ND ND ND 8.32 47.8
15-Mar-l 7 12.6 ND ND ND 8.49 44.7
15-Jun-l 7 14.6 ND ND ND 8.52 47.3
2-Aug-17 14.6 ND ND ND 8.52 48.6
1 0-Oct-17 13.8 ND ND ND 8.57 42.5
15-Mar-18 15.2 ND ND ND 8.36 51.2
13-Jun-l 8 13.9 ND ND ND 9.24 47.4
30-Aug-18 15.4 ND ND ND 7.34 54.7
12-Dec-18 15.6 ND ND ND 7.67 49.8
16-Mar-19 14.1 ND ND ND 7.38 47.6
13-Jun-19 15.8 ND ND ND 7.62 49.3
Chloroform Carbon Chloromethane Methylene Nitrate Chloride TW4-5 (ug/1) Tetrachloride (ug/1) Chloride (mg/I) (mg/I) Cu21l) (ue:/1)_
II-Sep-19 14.6 ND ND ND 7.02 46.1
14-Dec-l 9 15.7 ND ND ND 6.97 53.1
I 7-Mar-20 14.8 ND ND ND 7.10 48.3
I l-Jun-20 15.4 ND ND ND 7.83 49.5
I 8-Sep-20 14.8 ND ND ND 6.37 47.0
4-Nov-20 15.6 ND ND ND 6.19 50.2
18-Mar-21 12.9 ND ND ND 7.43 46.0
16-Jun-21 13.0 ND ND ND 8.11 50.8
22-Sep-21 11.2 ND ND ND 6.63 39.8
8-Dec-21 12.4 ND ND ND 6.71 51.3
23-Mar-22 11.0 ND ND ND 7.30 47.7
16-Jun-22 10.3 ND ND ND 7.10 40.7
14-Sep-22 13.2 ND ND ND 7.22 45.8
8-Dec-22 7.6 ND ND ND 7.54 51.8
29-Mar-23 8.6 ND ND ND 6.27 51.3
2 I-Jun-23 8.1 ND ND ND 7.13 52.5
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Chloroform Carbon Chloromethane Methylene Nitrate Chloride TW4-6 (ug/1) Tetrachloride (ug/1) Chloride (mg/I) (mg/I) (ue/1) (qe/1)
6-Jun-00 0
2-Sep-00 0
28-Nov-00 0 ND
26-Mar-0l 0 0.13
20-Jun-0l 0 ND
20-Sep-0l 4 ND
7-Nov-01 1 ND
26-Mar-02 0 ND
21-May-02 0 ND
12-Sep-02 0 ND
24-Nov-02 0 ND
28-Mar-03 0 0.1
23-Jun-03 0 ND
12-Sep-03 0 ND
8-Nov-03 0 ND
29-Mar-04 0 ND
22-Jun-04 0 ND
l 7-Sep-04 0 ND
17-Nov-04 0 ND
16-Mar-05 0 0.2
25-May-05 2.5 NA NA NA 0.4 NA
3 l-Aug-05 10.0 <1 2.8 <l 0.8 NA
1-Dec-05 17.0 <1 1.3 <l 0.9 NA
9-Mar-06 31.0 <I <I <l 1.2 31
14-Jun-06 19.0 <I <I <1 I 30
20-Jul-06 11.0 <I <I <1 0.6 37
8-Nov-06 42.8 <1 <l <1 1.4 65
28-Feb-07 46.0 <l <1 <1 1.5 32
27-Jun-07 11.0 <1 <1 <l 0.6 38
15-Aug-07 18.0 <I <1 <l 0.7 36
10-Oct-07 18.0 <I <1 <l 0.8 38
26-Mar-08 52.0 <I <I <l 1.1 33
25-Jun-08 24.0 <1 <l <1 0.9 35
10-Sep-08 39.0 <l <l <1 1.14 35
15-Oct-08 37.0 <l <l <l 1.01 33
1 I-Mar-09 81.0 <l <l <I 2.2 35
24-Jun-09 120 <I <I <1 2.7 37
15-Sep-09 280 <l <l <I 5.0 37
22-Dec-09 250 <l <l <I 6.1 41
Chloroform Carbon Chloromethane Methylene Nitrate Chloride TW4-6 {ug/1) Tetrachloride {ug/1) Chloride {mg/I) (mg/I) (ue/1) (ug/1)
25-Feb-10 1000 <l <l <l 1.6 45
10-Jun-10 590 <l <l <l 2.5 33
12-Aug-10 630 <l <l <l 3.9 31
13-Oct-l 0 420 <l <l <l 4.3 41
LJ-teb-11 4/ NU NU NU u:1 4U
26-May-l l 10 NU NU NU 0.3 42
17-Aug-ll 16 ND ND ND 0.3 39
7-Dec-11 21 ND ND ND 0.8 36
18-Jan-12 38 ND ND ND 0.7 38
13-Jun-12 4.7 ND ND ND 0.2 40
1 l-Sep-12 6.9 ND ND ND 0.1 21
3-Oct-12 9.0 ND ND ND 0.2 41
13-Feb-13 6.9 ND ND ND 0.154 40.4
13-Jun-13 4.9 ND ND ND 0.155 37.9
5-Sep-13 5.9 ND ND ND 0.157 40.6
13-Nov-13 5.5 ND ND ND 1.52 40.2
29-Jan-14 5.7 ND ND ND 0.184 40.6
22-May-14 10.3 ND ND ND 0.312 37
14-Aug-14 202 ND ND ND 4.2 40
24-Sep-14 260 ND ND ND NIA NIA
29-Oct-14 723 ND ND ND 6.92 41.l
18-Mar-15 1180 ND ND ND 5.25 41.2
11-Jun-15 1040 ND ND ND 5.87 41.6
10-Sep-15 1040 ND ND ND 6.75 47.0
29-Oct-15 843 ND ND ND 5.61 40.2
22-Mar-16 834 ND ND ND 6.79 42.0
8-Jun-16 486 ND ND ND 3.19 44.l
4-Aug-16 433 ND ND ND 3.85 42.2
26-Oct-16 301 ND ND ND 3.74 46.1
16-Mar-17 288 ND ND ND 3.15 42.1
21-Jun-17 239 ND ND ND 2.42 42.6
3-Aug-17 129 ND ND ND 1.71 42.9
11-Oct-17 121 ND ND ND 1.71 37.6
20-Mar-18 159 ND ND ND 1.96 43.l
14-Jun-18 74.9 ND ND ND 1.48 40.2
5-Sep-18 53.2 ND ND ND 1.18 44.0
12-Dec-18 37 .0 ND ND ND 0.900 20.0
19-Mar-19 23 .2 ND ND ND 0.755 41.0
13-Jun-19 15.8 ND ND ND 0.484 38.1
Chloroform Carbon Chloromethane Methylene Nitrate Chloride TW4-6 (ug/1) Tetrachloride (ug/1) Chloride (mg/I) (mg/I) (ue/l) (:u!!ID
l l-Sep-19 15.8 ND ND ND 0.412 39.7
14-Dec-19 7.40 ND ND ND 0.244 45.7
l 7-Mar-20 6.93 ND ND ND 0.222 43.2
l l-Jun-20 4.86 ND ND ND 0.205 42.4
18-Sep-20 3.63 ND ND ND 0.144 40.5
4-Nov-20 4.61 ND ND ND 0.197 42.9
18-Mar-21 3.78 ND ND ND 0.205 41.6
16-Jun-21 2.90 ND ND ND 0.215 43.8
15-Sep-21 3.71 ND ND ND 0.166 34.1
8-Dec-21 3.92 ND ND ND <0.100 44.8
22-Mar-22 3.10 ND ND ND 0.1 31.5
16-Jun-22 2.10 ND ND ND 0.2 43.1
14-Sep-22 3.90 ND ND ND 0.144 38.7
8-Dec-22 1.50 ND ND ND 0.134 40.7
29-Mar-23 1.70 ND ND ND <0.100 43.2
20-Jun-23 2.30 ND ND ND 0.134 44.7
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Chloroform Carbon Chloromethane Methylene Nitrate Chloride TW4-7 (ug/1) Tetrachloride (ug/1) Chloride (mg/I) (mg/I) (ug/1) (ue/1)
29-Nov-99 256
15-Mar-00 616
2-Sep-00 698
29-Nov-00 684 1.99
28-Mar-0l 747 2.46
20-Jun-01 1100 2.65
20-Sep-0l 1200 3.38
8-Nov-01 1100 2.5
26-Mar-02 1500 3.76
23-May-02 1600 3.89
12-Sep-02 1500 3.18
24-Nov-02 2300 4.6
28-Mar-03 1800 4.8
'
23-Jun-03 5200 7.6
12-Sep-03 3600 7.6
8-Nov-03 4500 7.1
29-Mar-04 2500 4.63
22-Jun-04 2900 4.83
17-Sep-04 3100 5.59
17-Nov-04 3800 6
16-Mar-05 3100 5.2
25-May-05 2700 NA NA NA 5.4 NA
3 l-Aug-05 3100 <10 <10 <10 5.2 NA
l-Dec-05 2500 <50 <50 <50 5.3 NA
9-Mar-06 1900 <50 <50 <50 1 48
14-Jun-06 2200 <50 <50 <50 4.5 47
20-Jul-06 2140 <50 <50 <50 4.7 51
8-Nov-06 2160 1.5 <I <1 4.6 49
28-Feb-07 1800 1.1 <1 <1 5 47
27-Jun-07 2600 LS <1 <l 5.1 45
14-Aug-07 2300 1.4 <1 <1 4.7 44
10-Oct-07 1900 1.2 <I <l 4.7 45
26-Mar-08 2200 1.3 <1 <1 4.2 43
25-Jun-08 1800 1.3 <1 <1 4.8 43
1 0-Sep-08 1600 1.4 <l <1 4.16 35
15-Oct-08 1900 <2 <2 <2 4.01 40
11-Mar-09 1800 1.2 <l <1 3.7 35
24-Jun-09 1400 <1 <1 <1 3.8 37
15-Sep-09 1500 1.0 <1 <1 4.1 37
Chloroform Carbon Chloromethane Methylene Nitrate Chloride TW4-7 (ug/1) Tetrachloride (ug/1) Chloride (mg/I) (mg/I) (u!!/1) (u!!/1)
29-Dec-09 1300 <l <l <l 4.2 ·37
3-Mar-10 1200 <l <l <l 3.8 36
10-Jun-10 1100 <l <l <l 3.9 31
18-Aug-10 1500 1.1 <l <l 3.9 36
13-Oct-10 1100 I.I <I <l 4 38
23-Feb-ll 1300 ND ND ND 3.60 45
l-Jun-11 1200 ND ND ND 4.00 35
18-Aug-l l 1200 ND ND ND 4.10 37
29-Nov-l l 1000 ND ND ND 3.80 37
19-Jan-12 1000 ND ND ND 3.90 37
14-Jun-12 790 ND ND ND 4.00 41
13-Sep-12 870 ND ND ND 3.80 40
4-Oct-12 940 ND ND ND 3.80 41
13-Feb-13 1080 3.51 ND ND 3.90 37.7
18-Jun-13 953 ND ND ND 4.04 39.3
12-Sep-13 1040 ND ND ND 4.17 36.4
14-Nov-13 1050 ND ND ND 4.13 37.2
5-Feb-14 946 5.41 ND ND 4.24 38.2
23-May-14 847 4.78 ND ND 4.19 37.7
27-Aug-14 857 ND 1.5 ND 2.90 39
30-Oct-14 926 ND ND ND 3.68 40.2
18-Mar-15 942 ND ND ND 4.25 40.4
ll-Jun-15 950 ND ND ND 2.62 42.1
10-Sep-15 897 ND ND ND 4.72 46.7
29-Oct-15 847 ND ND ND 3.49 40.6
22-Mar-16 834 ND ND ND 4.43 42.4
8-Jun-16 909 ND ND ND 3.75 44.1
4-Aug-16 1000 ND ND ND 4.21 42.3
27-Oct-16 886 ND ND ND 4.33 45.8
21-Mar-17 986 ND ND ND 3.87 40.5
21-Jun-17 968 ND ND ND 4.15 43.3
4-Aug-17 1070 ND ND ND 4.20 44.7
l 1-Oct-17 884 ND ND ND 4.35 43.7
21-Mar-18 721 ND ND ND 3.96 44.5
14-Jun-l 8 751 ND ND ND 4.45 41.5
5-Sep-18 781 ND ND ND 4.34 48.5
13-Dec-18 838 ND ND ND 3.98 42.8
20-Mar-19 736 ND ND ND 4.01 41.3
19-Jun-19 862 ND ND ND 4.19 43.0
Chloroform Carbon Chloromethane Methylene Nitrate Chloride TW4-7 (ug/1) Tetrachloride (ug/1) Chloride (mg/I) (mg/I) (µg/1) (ue/1)
12-Sep-19 801 ND ND ND 3.76 39.7
18-Dec-l 9 546 ND ND ND 3.11 47.2
18-Mar-20 746 ND ND ND 3.75 42.1
12-Jun-20 864 ND ND ND 4.06 44.1
l 9-Sep-20 971 ND ND ND 3.87 41.5
l l-Nov-20 967 ND ND ND 4.40 42.8
24-Mar-21 875 ND ND ND 4.25 46.2
17-Jun-21 819 ND ND ND 4.80 41.7
23-Sep-21 801 ND ND ND 4.58 42.8
9-Dec-21 868 ND ND ND 3.02 42.9
24-Mar-22 776 0.5 2.1 ND 4.1 41.3
22-Jun-22 447 ND ND ND 3.9 42.5
15-Sep-22 887 ND ND ND 3.77 45.0
9-Dec-22 824 ND ND ND 4.06 44.8
29-Mar-23 619 ND ND ND 3.85 44.9
21-Jun-23 706 ND ND ND 3.89 45.7
0
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0 0
0
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0
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0 0 0
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0 0 0
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24-Jul-98 +' ----+------+-------+----+-------1----~
19-Apr-01
14-Jan-04
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6-Jul-09 -j I ta I I I
1-Apr-12 i ...--1 I I I I
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Chloroform Carbon Chloromethane Methylene Nitrate Chloride TW4-8 (ug/1) Tetrachloride (ug/1) Chloride (mg/I) (mg/I) (owl) (02/1)
29-Nov-99 0
15-Mar-00 21.8
2-Sep-00 102
-29-Nov-00 107 ND
26-Mar-0l 116 ND
20-Jun-0l 180 ND
20-Sep-0l 180 0.35
7-Nov-01 180 ND
26-Mar-02 190 0.62
22-May-02 210 0.77
12-Sep-02 300 ND
24-Nov-02 450 ND
28-Mar-03 320 0.8
23-Jun-03 420 ND
12-Sep-03 66.0 ND
8-Nov-03 21.0 0.1
29-Mar-04 24.0 0.65
22-Jun-04 110 0.52
17-Sep-04 120 ND
17-Nov-04 120 ND
16-Mar-05 10.0 ND
25-May-05 <l NA NA NA 0.2 NA
3 l-Aug-05 1.1 <l 1.7 <l <0.1 NA
30-Nov-05 <l <1 <l <l <0.1 NA
• 9-Mar-06 1.3 <l 2.1 <l 0.3 39
14-Jun-06 1.0 <l 1.8 <l <0.1 37
20-Jul-06 <l <l <l <l 0.1 39
8-Nov-06 <l <l <I <I <0.1 40
28-Feb-07 2.5 <l <I <I 0.7 39
27-Jun-07 2.5 <l <l <I 0.2 42
15-Aug-07 1.5 <l <I <l <0.1 42
I0-Oct-07 3.5 <l <l <l 0.5 43
26-Mar-08 <l <I <l <I 0.1 46
25-Jun-08 <l <1 <l <l <0.05 45
10-Sep-08 <l <l <l <l <0.05 39
15-Oct-08 <l <l <l <l <0.05 44
4-Mar-09 <l <l <l <l <0.1 42
24-Jun-09 <l <l <l <l <0.1 44
15-Sep-09 <l <l <l <l <l 44
Chloroform Carbon Chloromethane Methylene Nitrate Chloride TW4-8 (ug/1) Tetrachloride (ug/1) Chloride (mg/I) (mg/I) (ug/1) (u2fl)
l 7-Dec-09 <l <l <l <l <0.1 51
24-Feb-10 <l <l <l <l <0.1 57
9-Jun-l 0 <l <l <l <l <0.1 42
11-Aug-10 <1 <l <1 <l <0.1 45
5-Oct-10 <l <I <l <l <0.1 46
16-Feb-l 1 ND ND ND ND ND 52
25-May-11 ND ND ND ND 0.1 45
16-Aug-l 1 ND ND ND ND 0.1 46
7-Dec-11 ND ND ND ND 0.2 45
18-Jan-12 ND ND ND ND 0.3 45
31-May-12 ND ND ND ND 0.2 44
29-Aug-12 ND ND ND ND 0.1 48
3-Oct-12 ND ND ND ND ND 47
7-Feb-13 ND ND ND ND 0.411 46.6
30-May-13 ND ND ND ND ND 45.5
5-Sep-13 ND ND ND ND ND 47.5
7-Nov-13 ND ND ND ND ND 46.1
23-Jan-14 63.8 ND ND ND 0.166 48.5
6-Feb-14 100 ND ND ND 0.165 46.6
22-May-14 122 ND ND ND 0.538 53
27-Aug-14 107 ND ND ND 0.6 47
29-Oct-14 191 ND ND ND 0.914 46.7
12-Mar-15 961 ND ND ND 2.34 49.6
l l-Jun-15 981 ND ND ND 1.88 53
1 0-Sep-15 747 ND ND ND 1.96 59.6
29-Oct-15 770 ND ND ND 2.20 52.0
l 7-Mar-16 634 ND ND ND 2.48 54.2
8-Jun-16 595 ND ND ND 2.14 58.7
4-Aug-16 522 ND ND ND 2.10 56.9
27-Oct-16 472 ND ND ND 2.16 60.1
21-Mar-l 7 359 ND ND ND 2.06 57.4
21-Jun-l 7 256 ND ND ND 1.97 58.8
4-Aug-17 223 ND ND ND 1.64 61.2
l l-Oct-17 214 ND ND ND 1.97 52.2
21-Mar-18 220 ND ND ND 1.36 60.8
14-Jun-18 155 ND ND ND 1.31 53.8
5-Sep-18 137 ND ND ND 1.40 63.2
13-Dec-18 93.8 ND ND ND 0.123 65.8
19-Mar-19 103 ND ND ND 1.23 54.3
Chloroform Carbon Chloromethane Methylene Nitrate Chloride TW4-8 (og/1) Tetrachloride (og/1) Chloride (mg/I) (mg/I) (owl) (owl)
19-Jun-19 96.0 ND ND ND 1.10 56.5
12-Sep-19 75.4 ND ND ND 0.999 52.0
l 8-Dec-19 84.4 ND ND ND 1.21 60.1
18-Mar-20 55.0 ND ND ND 1.04 53.8
12-Jun-20 53.8 ND ND ND 1.06 56.9
18-Sep-20 39.5 ND ND ND 0.894 52.6
l l-Nov-20 51.3 ND ND ND 1.27 54.7
18-Mar-2I 26.9 ND ND ND 1.00 52.8
16-Jun-21 22.3 ND ND ND 1.12 51.5
22-Sep-21 17.0 ND ND ND 0.665 40.8
8-Dec-21 17.2 ND ND ND 0.738 54.9
23-Mar-22 15.1 ND ND ND 0.8 50.8
16-Jun-22 10.9 ND ND ND 0.64 52.8
14-Sep-22 15.3 ND ND ND 0:718 52.5
l 5-Sep-22 16.3 ND ND ND 0.718 52.5
8-Dec-22 4.4 ND ND ND 0.654 50.8
29-Mar-23 9.1 ND ND ND 0.658 53.4
21-Jun-23 8.3 ND ND ND 0.597 55.3
0
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0 24-Jul-98 ____ _...,_ ________ ,__ ___________ ____,
19-Apr-01 -
14-Jan-04 -
10-Oct-06 • I I I I I
6-Jul-09 t I I I I I
1-Apr-12 l I I I I I
27-Dec-14
22-Sep-17
18-Jun-20
15-Mar-23
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Chloroform Carbon Chloromethane Methylene Nitrate Chloride TW4-9 (ug/1) Tetrachloride {ug/1) Chloride {mg/I) {mg/I) (µ2'}) (u2/l)
20-Dec-99 4.2
15-Mar-00 1.9
2-Sep-00 14.2
29-Nov-O0 39.4 ND
27-Mar-01 43.6 ND
20-Jun-0l 59.0 0.15
20-Sep-0l 19.0 0.4
7-Nov-01 49.0 0.1
26-Mar-02 41.0 0.5
22-May-02 38.0 0.65
12-Sep-02 49.0 0.2
24-Nov-02 51.0 0.6
28-Mar-03 34.0 0.6
23-Jun-03 33.0 0.8
12-Sep-03 32.0 1.1
8-Nov-03 46.0 1.1
29-Mar-04 48.0 0.82
22-Jun-04 48.0 0.75
17-Sep-04 39.0 0.81
17-Nov-04 26.0 1.2
16-Mar-05 3.8 1.3
25-May-05 1.2 NA NA NA 1.3 NA
31-Aug-05 <1 <1 2.9 <1 1.3 NA
1-Dec-05 <1 <1 <l <1 1.3 NA
9-Mar-06 <1 <1 2.6 <1 1.5 38
14-Jun-06 <1 <1 2.7 <l 1.5 39
20-Jul-06 <1 <1 <1 <1 0.9 41
8-Nov-06 <1 <1 <1 <1 0.7 44
28-Feb-07 <1 <1 <1 <1 0.6 44
27-Jun-07 21 <1 <1 <1 1.3 42
15-Aug-07 9.5 <l <1 <1 1.8 38
10-Oct-07 8.7 <l <1 <1 2 40
26-Mar-08 1.3 <l <1 <1 2.1 35
25-Jun-08 1.0 <I <1 <1 2.3 35
10-Sep-08 <1 <I <1 <1 2.79 28
15-Oct-08 <1 <I <l <1 1.99 58
4-Mar-09 <1 <I <I <1 2.5 30
24-Jun-09 <1 <1 <I <1 2.3 30
15-Sep-09 <1 <1 <1 <l 2.5 30
Ch]oroform Carbon Chloromethane Methylene Nitrate Chloride TW4-9 (ug/1) Tetrachloride (ug/1) Chloride (mg/I) (mg/I) (ue/1) (u2fl)
17-Dec-09 <1 <1 <1 <1 1.7 37
23-Feb-10 <1 <1 <1 <1 1.7 47
9-Jun-10 <1 <l <1 <l 1.5 33
l l-Aug-10 <l <1 <l <1 1.2 40
6-Oct-l 0 <1 <l <1 <1 1.8 34
17-Feb-ll ND ND ND ND 1.3 41
25-May-l l ND ND ND ND 3.4 38
16-Aug-11 ND ND ND ND 4 21
7-Dec-11 ND ND ND ND 2.3 38
18-Jan-12 ND ND ND ND 2.3 28
31-May-12 ND ND ND ND 4 23
30-Aug-12 ND ND ND ND 3.9 22
3-Oct-12 ND ND ND ND 3.8 21
7-Feb-13 ND ND ND ND 4.12 20.6
30-May-13 ND ND ND ND 4.49 21.4
5-Sep-13 ND ND ND ND 4.03 22.7
7-Nov-13 ND ND ND ND 4.87 23.6
29-Jan-14 ND ND ND ND 4.36 22
21-May-14 6.9 ND ND ND 3.44 24
14-Aug-14 46.9 ND ND ND 2.7 27
29-Oct-14 101 ND ND ND 4.27 25
12-Mar-15 53.5 ND ND ND 3.28 29.5
I l-Jun-15 35. I ND ND ND 1.83 35.3
3-Sep-15 48 .2 ND ND ND 1.44 39.5
28-Oct-15 68.4 ND ND ND 2.89 29.2
l 7-Mar-16 74.3 ND ND ND 2.51 33.6
8-Jun-16 76.2 ND ND ND 2.16 35.I
3-Aug-16 76.8 ND ND ND 2.11 33 .6
26-Oct-l 6 76 ND ND ND 2.24 37.4
16-Mar-17 I 13 ND ND ND 2.18 34.5
21-Jun-17 113 ND ND ND 1.92 35.9
3-Aug-17 118 ND ND ND 1.90 37.0
ll-Oct-17 132 ND ND ND 2.18 32.3
21-Mar-18 159 ND ND ND 1.85 38.3
14-Jun-18 134 ND ND ND 1.85 35.7
5-Sep-18 94.2 ND ND ND 1.04 43.4
13-Dec-l 8 109 ND ND ND 1.23 36.3
19-Mar-19 86.4 ND ND ND 1.09 36.9
19-Jun-19 68.l ND ND ND 0.785 38.3
Chloroform Carbon Chloromethane Methylene Nitrate Chloride TW4-9 (ug/1) Tetrachloride (ug/1) Chloride (mg/I) (mg/I) (uwl) (ug/1)
11-Sep-19 66.0 ND ND ND 0.904 35.2
I 8-Dec-19 54.8 ND ND ND 0.744 40.1
18-Mar-20 48.9 ND ND ND 0.855 37.7
12-Jun-20 55.1 ND ND ND 0.990 39.5
18-Sep-20 45.0 ND ND ND 0.867 36.7
ll-Nov-20 47.1 ND ND ND 1.11 37.2
18-Mar-21 39.0 ND ND ND 1.06 40.7
16-Jun-21 102.0 ND ND ND 1.00 37.4
22-Sep-21 30.0 ND ND ND 0.700 30.8
8-Dec-21 25.4 ND ND ND 0.798 36.9
23-Mar-22 16.5 ND ND ND 0.8 34.6
22-Jun-22 9.8 ND ND ND 0.62 41.7
14-Sep-22 10.8 ND ND ND 0.673 32.4
15-Sep-22 11.8 ND ND ND 0.673 32.4
8-Dec-22 6.7 ND ND ND 0.676 33.2
29-Mar-23 6.2 ND ND ND 0.765 37.1
21-Jun-23 5.0 ND ND ND 0.742 38.0
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Chloroform Carbon Chloromethane Methylene Nitrate Chloride TW4-10 (ug/1) Tetrachloride (ug/1) Chloride (mg/I) (mg/I) (ue;/1) (ue;/1)
21-Jan-02 14
26-Mar-02 16 0.14
21-May-02 17 0.11
12-Sep-02 6 ND
24-Nov-02 14 ND
28-Mar-03 29 0.2
23-Jun-03 1 IO 0.4
12-Sep-03 74 0.4
8-Nov-03 75 0.3
29-Mar-04 22 0.1
22-Jun-04 32 ND
17-Sep-04 63 0.46
17-Nov-04 120 0.4
16-Mar-05 140 1.6
25-May-05 62.4 NA NA NA 0.8 NA
3 l-Aug-05 110 <2.5 6.2 <2.5 1.1 NA
1-Dec-05 300 <2.5 <2.5 <2.5 3.3 NA
9-Mar-06 190 <5 <50 <50 2.4 50
l 4-Jun-06 300 <5 <50 <50 3.5 54
20-Jul-06 504 <5 <50 <50 6.8 61
8-Nov-06 452 <1 1.6 1 5.7 58
28-Feb-07 500 <1 <1 1 7.6 62
27-Jun-07 350 <l <1 1 5.1 54
15-Aug-07 660 <l <l 1 7.3 59
10-Oct-07 470 <l <l 1 6.7 59
26-Mar-08 620 <l <l 1 7.3 55
25-Jun-08 720 <1 <l 1 9.91 58
1 0-Sep-08 680 <1 <1 1 9.23 51
15-Oct-08 1200 <2 <2 2 10.5 61
l 1-Mar-09 1100 <I <l 1 11.6 64
24-Jun-09 1200 <1 <l 1 9.8 62
15-Sep-09 910 <l <1 1 8.1 51
22-Dec-09 300 <1 <l <l 3.5 51
3-Mar-10 460 <1 <1 <1 5 49
1O-Jun-10 220 <1 <1 <1 1.6 42
12-Aug-10 100 <1 <l <1 0.8 38
13-Oct-10 1100 <l <] <] 11 52
23-Feb-11 620 ND ND ND 9 62
l-Jun-11 280 ND ND ND 3.3 42
Chloroform Carbon Chloromethane Methylene Nitrate Chloride TW4-10 (ug/1) Tetrachloride (ug/1) Chloride (mg/I) (mg/I) (ue/1) (ue/1)
17-Aug-ll 180 ND ND ND 1.9 4]
16-Nov-l l 110 ND ND ND 1.1 45
l 9-Jan-12 76 ND ND ND 0.9 40
13-Jun-12 79 ND ND ND 0.8 46
12-Sep-12 130 ND ND ND 1.0 44
3-Oct-12 140 ND ND ND 1.6 45
13-Feb-13 154 ND ND ND 1.2 49.1
13-Jun-13 486 ND ND ND 5.6 51.5
12-Sep-13 1160 ND ND ND 13.0 67.9
14-Nov-13 1380 ND ND ND 16.0 70.9
5-Feb-14 1260 5.16 ND ND 16.8 73
23-May-14 1110 ND ND ND 13.9 77.3
27-Aug-14 1060 ND 1.5 ND 9.8 74
30-Oct-14 1220 ND ND ND 13.2 75.2
18-Mar-15 1210 ND ND ND 15.0 78.6
II-Jun-15 1240 ND ND ND 11.4 75
10-Sep-15 1280 ND ND ND 14.0 89.5
29-Oct-15 1350 ND ND ND 13.5 79.9
22-Mar-16 1430 ND ND ND 17.3 84.1
8-Jun-16 1510 ND ND ND 14.9 89.5
4-Aug-16 1500 ND ND ND 14.9 85.3
27-Oct-16 1290 ND ND ND 14.8 84.4
21-Mar-17 1260 ND ND ND 13.0 74.6
21-Jun-17 1140 ND ND ND 13.0 73.1
4-Aug-17 1320 ND ND ND 13.4 77.0
l l-Oct-17 1150 ND ND ND 12.9 70.0
21-Mar-18 1240 ND ND ND 11.1 72.7
14-Jun-18 914 ND ND ND 11.2 64.5
5-Sep-18 911 ND ND ND 10.1 73.5
13-Dec-l 8 1070 ND ND ND 10.6 63.5
20-Mar-19 869 ND ND ND 9.34 59.3
19-Jun-l 9 799 ND ND ND 8.86 58.7
12-Sep-19 734 ND ND ND 7.79 55.8
18-Dec-l 9 768 ND ND ND 6.89 62.0
18-Mar-20 798 ND ND ND 7.83 53.5
12-Jun-20 928 ND ND ND 8.13 60.1
19-Sep-20 854 ND ND ND 7.34 53 .9
l l-Nov-20 903 ND ND ND 8.69 58.6
24-Mar-21 718 ND ND ND 7.20 58.1
Chloroform Carbon Chloromethane Methylene Nitrate Chloride TW4-10 (ug/1) Tetrachloride (ug/1) Chloride (mg/I) (mg/I) (ue/1) (u!!fl) •-
l 7-Jun-21 609 ND ND ND 7.75 48.7
23-Sep-21 545 ND ND ND 6.35 50.6
9-Dec-21 675 ND ND ND 5.47 51.9
24-Mar-22 471 ND 1 ND 5.1 49.0
22-Jun-22 342 ND ND ND 4.6 46.0
15-Sep-22 563 ND ND ND 5.57 52.0
I 6-Sep-22 564 ND ND ND 5.57 52.0
9-Dec-22 499 ND ND ND 4.76 43.4
29-Mar-23 361 ND ND ND 4.20 48.6
21-Jun-23 322 ND ND ND 3.76 46.9
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Chloroform Carbon Chloromethane Methylene Nitrate Chloride TW4-ll Tetrachloride (ug/1) (ue:/1) (ug/1) Chloride (ug/1) (mg/I) (mg/I)
2 l-Jan-02 4700
26-Mar-02 4900 9.6
22-May-02 5200 9.07
12-Sep-02 6200 8.84
24-Nov-02 5800 9.7
28-Mar-03 5100 9.7
23-Jun-03 5700 9.4
12-Sep-03 4600 9.9
8-Nov-03 5200 9.3
29-Mar-04 5300 9.07
22-Jun-04 5700 8.74
l 7-Sep-04 4800 8.75
l 7-Nov-04 5800 9.7
16-Mar-05 4400 8.7
25-May-05 3590 NA NA NA 10.3 NA
31-Aug-05 4400 <10 <10 <10 9.4 NA
l-Dec-05 4400 <100 <100 <100 9.4 NA
9-Mar-06 4400 <50 <50 <50 9.2 56
14-Jun-06 4300 "<50 <50 <50 10 56
20-Jul-06 4080 <50 <50 <50 10 55
8-Nov-06 3660 1.7 2.7 1.3 10 55
28-Feb-07 3500 1.3 <1 1.6 10.1 54
27-Jun-07 3800 1.6 <1 1.1 10.6 53
15-Aug-07 4500 1.7 <1 1.1 10.2 53
10-Oct-07 4400 1.6 <1 1.2 9.8 53
26-Mar-08 340 <l <1 <1 7.7 63
25-Jun-08 640 <l <1 <1 7.28 46
10-Sep-08 900 <I <1 <1 7.93 42
15-Oct-08 1000 <2 <2 <2" 9.46 47
11-Mar-09 1100 <I <I <1 7.3 49
24-Jun-09 980 <I <I <I 6.8 44
l 5-Sep-09 1000 <I <I <I 7 49
29-Dec-09 860 <1 <1 <I 6.6 46
3-Mar-10 820 <1 <1 <I 6.8 42
10-Jun-10 820 <1 <I <I 6.9 40
12-Aug-10 800 <1 <1 <I 6.7 43
13-Oct-10 720 <1 <1 <I 6.4 49
23-Feb-ll 1000 ND ND ND 6.5 46
1-Jun-11 930 ND ND ND 7.3 49
Chloroform Carbon Chloromethane Methylene Nitrate Chloride TW4-11 Tetrachloride (ug/1) (u2/l) (ug/1) Chloride (ug/1) (mg/I) (mg/I)
' 17-Aug-11 820 ND ND ND 7.1 48
16-Nov-11 1500 ND ND ND 7.1 46
24-Jan-12 610 ND ND ND 6.8 43
13-Jun-12 660 ND ND ND 6.7 52
13-Sep-12 740 ND ND ND 3 49
4-Oct-12 730 ND ND ND 7 50
13-Feb-13 867 3.23 ND ND 6.83 47.3
18-Jun-13 788 ND ND ND 7.42 49.7
12-Sep-13 865 ND ND ND 7.8 46.6
13-Nov-13 874 ND ND ND 8.01 46.7
5-Feb-14 785 5.19 ND ND 8.47 48.5
23-May-14 751 ND ND ND 6.92 51.6
27-Aug-14 719 ND 1.2 ND 5.4 48
29-Oct-14 803 ND ND ND 7.33 56.4
9-Mar-15 2450 1.24 ND ND 8.72 49.8
8-Jun-15 2710 ND ND ND 8.48 62.2
31-Aug-15 1120 ND 1.62 ND 9.61 73.1
19-Oct-15 2730 ND ND ND 7.5 55.3
9-Mar-16 2660 1.2 ND ND 7.13 55.5
23-May-16 3340 2.19 ND ND 7.81 56.4
25-Jul-16 3200 ND ND ND 8.83 55.3
12-Oct-16 3180 1.58 ND ND 8.92 57.2
8-Mar-17 3310 1.71 ND ND 8.12 49.8
13-Jun-l 7 3370 1.83 ND ND 7.92 51.4
26-Jul-17 3290 1.81 ND ND 7.78 51.0
11-Oct-17 2880 1.48 ND ND 7.79 49.7
12-Mar-18 3090 1.82 ND ND 7.89 54.0
8-Jun-18 2800 1.34 ND ND 7.51 52.6
22-Aug-18 3050 1.47 ND ND 7.15 53.3
28-Nov-18 2930 1.33 ND ND 6.85 45.4
8-Mar-19 2820 1.48 ND ND 7.50 46.8
5-Jun-19 2970 1.52 1.40 ND 8.30 45.3
4-Sep-19 2790 ND ND ND 7.15 48.8
I0-Dec-19 3250 ND ND ND 7.14 49.0
19-Feb-20 2990 ND ND ND 7.07 51.9
27-May-20 2810 1.37 ND ND 7.56 48.6
4-Sep-20 3070 1.37 ND ND 7.59 46.3
28-Oct-20 2670 ND 3.86 ND 7.19 43.3
23-Feb-21 2750 ND 3.86 ND 7.21 49.5
Chloroform Carbon Chloromethane Methylene Nitrate Chloride TW4-11 Tetrachloride (ug/1) (ul!fl)_ (ug/1) Chloride (ug/1) (mg/I) (mg/I)
9-Jun-21 3320 ND ND ND 8.17 37.7
24-Aug-21 2600 ND ND ND 5.78 40.2
l-Dec-21 2850 ND ND ND 7.44 48.4
9-Mar-22 2780 ND ND ND 7.4 41.5
8-Jun-22 2550 1.0 2.7 ND 5.9 44.5
30-Aug-22 3020 ND ND ND 6.90 42.4
31-Aug-22 3021 ND ND ND 6.90 42.4
30-Nov-22 2900 ND ND ND 7.05 36.6
7-Mar-23 2430 ND ND ND 5.68 39.2
13-Jun-23 2510 ND 2.9 ND 6.70 40.9
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Chloroform Carbon Chloromethane Methylene Nitrate Chloride TW4-12 (ug/1) Tetrachloride (ug/1) Chloride (mg/I) (mg/I) (u~/1) ' (mun
12-Sep-02 2 2.54
24-Nov-02 0 2.2
28-Mar-03 0 1.9
23-Jun~03 0 1.8
12-Sep-03 0 1.8
9-Nov-03 0 1.6
29-Mar-04 0 1.58
22-Jun-04 0 1.4
17-Sep-04 0 1.24
l 7-Nov-04 0 1.5
16-Mar-05 0 1.4
25-May-05 <l NA NA NA 1.6 NA
31-Aug-05 <l <l 5.8 <l 1.5 NA
l-Dec-05 <l <I 1.9 <2 1.4 NA
9-Mar-06 <l <l 2.6 <l 1.3 19
14-Jun-06 <l <l 1.4 <l 1.4 16
20-Jul-06 <l <l <l <l 1.4 16
8-Nov-06 <l <l <l <l 1.4 16
28-Feb-07 <l <I <l <l 1.5 16
27-Jun-07 <l <I <l <l 1,5 18
15-Aug-07 <l <I <l <l 1.4 29
10-Oct-07 <l <l <l <l 1.4 16
26-Mar-08 <l <l <l <l 1.6 16
25-Jun-08 <1 <l <l <1 2.69 19
10-Sep-08 <1 <l <1 <1 2.65 18
15-Oct-08 <1 <l <1 <l 2.47 22
4-Mar-09 <1 <l <l <l 2.4 23
24-Jun-09 <1 <l <l <l 3.8 22
15-Sep-09 <1 <l <l <l 5.1 22
16-Dec-09 <l <l <l <l 3.6 23
23-Feb-10 <l <l <l <l 4 22
8-Jun-10 <l <l <l <l 11 29
10-Aug-10 <l <l <l <l 9 35
5-Oct-10 <l <l <l <l 8 31
15-Feb-11 ND ND ND ND 6.5 31
25-May-l l ND ND ND ND 7 32
16-Aug-l 1 ND ND ND ND 6.8 31
15-Nov-l 1 ND ND ND ND 8 30
l 7-Jan-12 ND ND ND ND 7.7 28
Chloroform Carbon Chloromethane Methylene Nitrate Chloride TW4-12 (ug/1) Tetrachloride (ug/1) Chloride (mg/I) (mg/I) (uwl.) (uwl.)
31-May-12 ND ND ND ND 10 34
29-Aug-12 ND ND ND ND 13 39
3-Oct-12 ND ND ND ND 13 39
7-Feb-13 ND ND ND ND 12.6 36.7
29-May-13 ND ND ND ND 14.2 38.6
29-Aug-13 ND ND ND ND 17.4 41.7
6-Nov-13 ND ND ND ND 16.4 41.4
22-Jan-14 ND ND ND ND 18.4 41.6
21-May-14 ND ND ND ND 17 40.2
27-Aug-14 ND ND ND ND 13 47
23-Oct-14 ND ND ND ND 16.1 50.2
l l-Mar-15 ND ND ND ND 19.2 50.6
10-Jun-15 ND ND ND ND 18.8 56
2-Sep-15 ND ND ND ND 16.4 60.2
21-Oct-15 ND ND ND ND 18 51.0
15-Mar-16 ND ND ND ND 34.8 56.2
25-May-16 ND ND ND ND 30.7 66.4
27-Jul-16 ND ND ND ND 37.7 67.5
l 9-Oct-16 ND ND ND ND 25.8 72.6
14-Mar-l 7 ND ND ND ND 25.9 62.6
14-Jun-l 7 1.25 ND ND ND 29.9 67.2
2-Aug-17 1.20 ND ND ND 25.1 65.3
I0-Oct-17 ND ND ND ND 26.9 56.2
14-Mar-18 ND ND ND ND 19.8 59.5
12-Jun-18 ND ND ND ND 18.4 53.6
29-Aug-18 ND ND ND ND 13.6 59.9
30-Nov-18 ND ND ND ND 10.4 56.1
16-Mar-19 ND ND ND ND 10.1 50.8
13-Jun-19 ND ND ND ND 8.31 55.3
l l-Sep-19 ND ND ND ND 8.88 52.6
14-Dec-19 ND ND ND ND 8.04 58.0
17-Mar-20 ND ND ND ND 6.39 53.0
10-Jun-20 ND ND ND ND 4.95 51.7
17-Sep-20 ND ND ND ND 2.34 50.3
4-Nov-20 ND ND ND ND 5.91 48.0
17-Mar-21 ND ND ND ND 3.10 52.0
l 5-Jun-21 ND ND ND ND 2.39 51.8
15-Sep-21 ND ND ND ND 1.95 36.1
7-Dec-21 ND ND ND ND 1.46 49.8
Chloroform Ht 0.0ll ·n loromethane Metli L~ :Niilrat • .Qt1lo1·tde, TW4-12 I etracb:I;o,rli.e Ola 1u (ug/1) ()lg,[!~. {a gfl) (u~/1) (mg/I) (mg/l)
15-Mar-22 ND ND ND ND 8.4 25.8
15-Jun-22 ND ND ND ND 16.0 53.3
13-Sep-22 ND ND ND ND 13.80 57.9
7-Dec-22 ND ND ND ND 4.68 49.2
22-Mar-23 ND ND ND ND 2.84 35.9
15-Jun-23 ND ND ND ND 4.72 43.6
19-Apr-01
14-Jan-04
10-Oct-06
6-Jul-09
1-Apr-12
27-Dec-14
22-Sep-17
18-Jun-20
15-Mar-23
0
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Chloroform Carbon Chloromethane Methylene Nitrate Chloride TW4-13 (ug/1) Tetrachloride (ug/1) Chloride (mg/I) (mg/I) (ue/1) (ue/1)
12:..sep-02 ND ND
24-Nov-02 ND ND
28-Mar-03 ND 0.20
23-Jun-03 ND 0.20
12-Sep-03 ND ND
9-Nov-03 ND 0.90
29-Mar-04 ND 0.12
22-Jun-04 ND 0.17
I 7-Sep-04 ND 4.43
l 7-Nov-04 ND 4.70
16-Mar-05 ND 4.20
25-May-05 <] NA NA NA 4.30 NA
3 I-Aug-05 <] <] 3.1 <] 4.60 NA
I-Dec-05 <l <I <] <l 4.30 NA
9-Mar-06 <l <] 1.7 <l 4.20 67.0
14-Jun-06 <l <l 1.4 <1 4.90 66.0
20-Jul-06 <1 <] <l <] 4.30 65.0
8-Nov-06 <1 <] <I <1 0.80 33.0
28-Feb-07 <1 <1 <] <] 4.00 59.0
27-Jun-07 <I <l <] <] 4.60 59.0
15-Aug-07 <I <] <} <1 4.40 58.0
I 0-Oct-07 <l <1 <1 <l 4.10 58.0
26-Mar-08 <1 <1 <l <1 3.80 54.0
25-Jun-08 <1 <I <] <] 4.24 58.0
10-Sep-08 <l <l <l <] 4.26 50.0
15-Oct-08 <I <I <l <] 4.63 58.0
4-Mar-09 <1 <l <} <l 3.70 58.0
24-Jun-09 <1 <l <l <1 1.20 57.0
15-Sep-09 <1 <l <l <] 4.70 63.0
16-Dec-09 <I <I <1 <1 4.10 60.0
24-Feb-10 <I <I <I <I 4.30 53.0
8-Jun-10 <l <l <1 <I 5.20 52.0
10-Aug-10 <I <l <I <] 5.60 55.0
5-Oct-10 <] <l <I <] 5.80 55.0
15-Feb-I I ND ND ND ND 5.50 60.0
25-May-l l ND ND ND ND 5.40 56.0
16-Aug-l l ND ND ND ND 5.20 60.0
I 5-Nov-11 ND ND ND ND 5.90 54.0
l 7-Jan-12 ND ND ND ND 5.50 55.0
31-May-12 ND ND ND ND 6.00 59.0
29-Aug-12 ND ND ND ND 6.20 60.0
3-0ct-12 ND ND ND ND 5.90 60.0
-Carbon Methylene Chloroform Chloromethane Nitrate Chloride TW4-13 (ug/1) Tetrachloride (ug/1) Chloride (mg/I) (mg/I) (mun (mun
7-Feb-13 ND ND ND ND 6.31 59.3
29-May-13 ND ND ND ND 6.84 56
29-Aug-13 ND ND ND ND 7.16 63.5
6-Nov-13 ND ND ND ND 6.48 58.5
22-Jan-14 ND ND ND ND 7.09 63.I
21-May-14 ND ND ND ND 5.99 56. l
13-Aug-14 ND ND ND ND 4.80 62
23-Oct-14 ND ND ND ND 6.28 66.1
11-Mar-15 ND ND ND ND 7.09 66.4
10-Jun-15 ND ND ND ND 6.32 70.3
2-Sep-15 ND ND ND ND 5.70 76.5
21-Oct-l 5 ND ND ND ND 5.78 65.5
16-Mar-16 ND ND ND ND 7.97 69.4
25-May-16 ND ND ND ND 5.87 71.8
28-Jul-l 6 ND ND ND ND 6.14 69.3
19-Oct-16 ND ND ND ND 6.20 70.9
15-Mar-17 ND ND ND ND 6.05 66.0
15-Jun-17 ND ND ND ND 6.49 70.4
2-Aug-17 ND ND ND ND 6.15 70.5
I 0-Oct-17 ND ND ND ND 6.17 60.9
14-Mar-18 ND ND ND ND 5.76 71.0
12-Jun-18 ND ND ND ND 6.24 65.0
29-Aug-18 ND ND ND ND 5.13 73.7
30-Nov-18 ND ND ND ND 5.29 64.5
16-Mar-19 ND ND ND ND 5.74 61.6
13-Jun-19 ND ND ND ND 6.56 65.4
13-Sep-19 ND ND ND ND 5.19 65.3
14-Dec-19 ND ND ND ND 5.17 68.7
l 7-Mar-20 ND ND ND ND 5.50 63.9
l l-Jun-20 ND ND ND ND 5.96 62.7
I 7-Sep-20 ND ND ND ND 5.25 60.2
4-Nov-20 ND ND ND ND 4.92 60.6
l 7-Mar-21 ND ND ND ND 5.57 67.3
l 5-Jun-21 ND ND ND ND 2.88 57.7
I 5-Sep-2 I ND ND ND ND 4.80 54.2
7-Dec-21 ND ND ND ND 5.06 61.0
16-Mar-22 ND ND ND ND 4.8 59.2
15-Jun-22 ND ND ND ND 4.5 62.6
13-Sep-22 ND ND ND ND 4.37 62.4
Chloroform Q1J';1,A'):n Chloromethane-Hilthylen Nitrate ,~lo.ride TW4-l3 Tetracbhrride Chloride (11g/I) (ui /1) (ug/1) (u,vl) (mg/I) mg/I)
7-Dec-22 ND ND ND ND 4.87 56.9
23-Mar-23 ND ND ND ND 4.47 57.6
15-Jun-23 ND ND ND ND 4.60 63.2
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Chloroform Carbon Chloromethane Methylene Nitrate Chloride TW4-14 (ug/1) Tetrachloride (ug/1) Chloride (mg/I) (mg/I) (02/1) (ue:/1)
8-Nov-06 <1 <1 <1 <1 2.40 37.0
28-Feb-07 <1 <1 <1 <1 2.30 38.0
27-Jun-07 <1 <1 <l <l 1.40 38.0
15-Aug-07 <l <l <1 <I 1.10 36.0
1 0-Oct-07 <l <l <1 <l 0.80 36.0
26.:Mar-08 <1 <l <l <l 0.04 57.0
25-Jun-08 <I <l <I <1 1.56 35.0
10-Sep-08 <I <l <I <1 1.34 34.0
15-Oct-08 <1 <l <l <1 0.76 40.0
4-Mar-09 <1 <I <1 <I 1.60 35.0
24-Jun-09 <I <I <I <1 1.40 36.0
15-Sep-09 <I <1 <I <1 1.50 38.0
16-Dec-09 <1 <l <1 <1 1.40 34.0
3-Mar-10 <1 <1 <I <I 2.50 33.0
8-Jun-10 <1 <1 <I <I 2.90 49.0
10-Aug-I0 <1 <1 <1 <1 2.80 35.0
6-Oct-10 <1 <l <l <l 2.90 29.0
15-Feb-l I ND ND ND ND 1.80 25.0
16-Aug-l l ND ND ND ND 2.60 33.0
15-Nov-11 ND ND ND ND 1.70 15.0
l 7-Jan-12 ND ND ND ND 1.90 20.0
31-May-12 ND ND ND ND 3.30 35.0
29-Aug-12 ND ND ND ND 3.90 37.0
3-Oct-12 ND ND ND ND 4.20 37.0
7-Feb-13 ND ND ND ND 4.63 35.2
30-May-13 ND ND ND ND 4.37 38.6
29-Aug-13 ND ND ND ND 4.51 37.6
6-Nov-13 ND ND ND ND 4.81 36.5
22-Jan-14 ND ND ND ND 5.92 35.5
21-May-14 ND ND ND ND 4.87 32.5
13-Aug-14 ND ND ND ND 4.10 38.0
23-Oct-14 1.68 ND ND ND 5.22 38.9
12-Mar-15 1.71 ND ND ND 5.22 40.1
10-Jun-15 1.82 ND ND ND 3.55 41.8
3-Sep-15 ND ND ND ND 2.77 42.4
2 l-Oct-15 1.46 ND ND ND 2.45 40.6
16-Mar-l 6 4.49 ND ND 2.18 2.94 42.4
26-May-16 6.15 ND ND 3.18 2.45 43.6
28-Jul-16 5.00 ND ND 1.80 2.88 42.4
Chloroform Carbon Chloromethane Methylene Nitrate Chloride TW4-14 (ug/1) Tetrachloride (ug/1) Chloride (mg/I) (mg/I) (u!!/1) (u2/l)
20-Oct-16 7.02 ND ND 1.59 2.86 45.6
15-Mar-l 7 6.45 ND ND ND 4.36 45.4
l 5-Jun-17 6.85 ND ND ND 5.12 46.9
2-Aug-17 6.14 ND ND ND 4.84 46.4
1 0-Oct-17 6.13 ND ND ND 4.73 42.5
15-Mar-18 5.80 ND ND ND 5.67 51.5
13-Jun-18 5.12 ND ND ND 6.36 46.9
30-Aug-18 4.76 ND ND ND 5.34 54.1
12-Dec-l 8 4.41 ND ND ND 5.85 48.7
16-Mar-19 4.08 ND ND ND 6.16 48.7
13-Jun-l 9 4.18 ND ND ND 5.86 48.3
1 l-Sep-19 6.08 ND ND ND 4.77 45.4
14-Dec-19 3.83 ND ND ND 4.76 49.4
I 7-Mar-20 2.98 ND ND ND 6.17 48.4
11-Jun-20 2.87 ND ND ND 6.57 47.6
18-Sep-20 2.41 ND ND ND 5.57 45.1
4-Nov-20 2.69 ND ND ND 5.81 49.7
18-Mar-21 1.77 ND ND ND 5.56 48.2
16-Jun-2 l ND ND ND ND 7.02 49.5
15-Sep-21 ND ND ND ND 5.56 34.4
8-Dec-21 ND ND ND ND 5.70 49.0
16-Mar-22 ND ND ND ND 5.9 42.0
l 6-Jun-22 1.0 ND ND ND 5.3 48.4
14-Sep-22 I.I ND ND ND 4.78 42.2
8-Dec-22 ND ND ND ND 6.20 43.5
23-Mar-23 ND ND ND ND 5.58 47.6
15-Jun-23 ND ND ND ND 6.12 50.0
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Chloroform Carbon Chloromethane Methylene Nitrate Chloride MW-26 (ug/1) Tetrachloride (ug/1) Chloride (mg/I) (mg/I) (uwl) (u!!/1)
12-Sep-02 3 ND
24-Nov-02 0 ND
28-Mar-03 0 0.1
23-Jun-03 7800 14.5
15-Aug-03 7400 16.8
12-Sep-03 2500 2.7
25-Sep-03 2600 2.5
29-Oct-03 3100 3.1
8-Nov-03 3000 2.8
29-Mar-04 NA NA
22-Jun-04 NA NA
l 7-Sep-04 1400 0.53
l 7-Nov-04 300 0.2
16-Mar-05 310 0.3
30-Mar-05 230 0.2
25-May-05 442 NA NA NA 0.2 NA
31-Aug-05 960 <5 5.4 <5 0.2 NA
l-Dec-05 1000 <50 <50 <50 .0.3 NA
9-Mar-06 1100 <50 <50 <50 0.2 52
14-Jun-06 830 <50 <50 <50 0.2 52
20-Jul-06 2170 <50 <50 <50 1.4 65
8-Nov-06 282 <l <1 2.8 0.3 54
28-Feb-07 570 <l <l 5.5 0.5 56
27-Jun-07 300 <l <l 13 0.4 49
15-Aug-07 1400 <l <l 36 1 57
10-Oct-07 2000 <l <l 14 0.6 57
26-Mar-08 930 <l <l 40 0.1 49
25-Jun-08 1300 <l <l 53 0.56 57
10-Sep-08 630 <l <l 24 ·0.24 44
15-Oct-08 1700 <l <l 100 0.65 64
4-Mar-09 950 <1 <l 51 0.4 49
24-Jun-09 410 <1 <l 12 0.2 48
15-Sep-09 850 <l <l 30 0.1 46
14-Dec-09 1100 <l <1 40 2.3 60
17-Feb-IO 780 <1 <1 19 0.2 57
9-Jun-10 1900 <1 <1 28 1.1 58
16-Aug-10 2200 <1 <1 21 0.6 49
1 l-Oct-10 970 <1 <1 6.5 0.7 65
23-Feb-11 450 ND ND 3.6 0.5 57
Chloroform Carbon Chloromethane Methylene Nitrate Chloride MW-26 (ug/1) Tetrachloride (ug/1) Chloride (mg/I) (mg/I) (owl) (ug/1)
31-May-ll 1800 ND ND 1.3 0.4 88
17-Aug-ll 720 ND ND 7.2 0.9 58
5-Dec-11 1800 ND ND 2.9 2 69
7-Feb-12 2400 ND ND 16 1.7 98
6-Jun-12 3000 ND ND 21 2.5 73
4-Sep-12 3100 ND ND 31 2.6 73
4-Oct-12 1200 ND ND 4 1.8 68
1 l-Feb-13 2120 ND ND 9.34 2.27 81.9
5-Jun-13 4030 ND ND 52.4 2.11 77.9
3-Sep-13 2940 ND ND 33.2 1.18 60.5
29-Oct-l 3 1410 ND ND 4.03 1.38 72.3
27-Jan-14 1400 ND ND 13.8 0.549 59.4
19-May-14 1960 ND ND 15.4 0.928 53.4
l 1-Aug-14 2120 ND 8.7 26 0.7 59
21-Oct-14 2090 ND ND 23.2 0.934 60.1
9-Mar-15 1980 ND ND 27.4 0.732 56.5
8-Jun-15 1980 ND ND 11.2 0.419 62
31-Aug-l 5 2350 ND 4.05 11.6 0.684 69.6
19-Oct-15 2680 ND 1.32 8.28 0.991 62.6
9-Mar-16 2650 ND 1.32 4.66 1.45 68.3
23-May-16 2220 ND ND 4.57 1.12 66.2
25-Jul-16 3190 ND ND 7.81 1.57 66.4
12-Oct-16 2510 ND ND 4.31 1.18 66.2
8-Mar-17 1290 ND ND 7.65 0.768 58.4
13-Jun-17 2450 ND ND 7.59 0.922 64.3
26-Jul-l 7 1230 ND ND 5.26 1.56 61.4
1 l -Oct-17 2570 ND ND 7.83 1.18 62.2
12-Mar-18 1210 ND ND 2.14 1.57 60.3
8-Jun-18 1870 ND ND 9.19 0.901 58.7
22-Aug-18 1680 ND ND ND 2.80 91.4
28-Nov-18 1480 ND ND ND 1.96 85.5
8-Mar-19 1110 ND ND 2.20 1.85 69.9
5-Jun-19 1280 ND ND 1.19 2.83 80.7
4-Sep-19 1360 ND ND 1.93 3.08 76.2
1 0-Dec-19 1390 ND ND 1.78 0.977 83.2
l 9-Feb-20 1100 ND ND ND 1.17 88.9
27-May-20 1610 ND ND 3.92 2.93 77.6
4-Sep-20 1130 ND ND 2.57 0.42 70.0
28-Oct-20 866 ND ND ND 3.62 67.4
Chloroform Carbon Chloromethane Methylene Nitrate Chloride MW-26 (ug/1) Tetrachloride (ug/1) Chloride (mg/I) (mg/I) (u2/l) (u2/l)
23-Feb-21 3060 ND ND 3.46 0.349 59.5
9-Jun-21 998 ND ND ND 0.810 48.6
24-Aug-21 1580 ND ND ND 0.671 46.6
1-Dec-21 826 ND 5.90 ND 0.518 54.7
9-Mar-22 1030 ND ND ND 0.3 50.2
8-Jun-22 611 ND ND ND 0.22 63.4
30-Aug-22 612 ND ND ND 0.662 57.0
30-Nov-22 1040 ND ND ND 0.337 52.1
7-Mar-23 571 ND ND ND 0.694 61.0
13-Jun-23 2230 ND 2.7 ND 0.294 57.6
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' Carbon Methylene Chloroform Chloromethane Nitrate Chloride · TW4-16 (ug/1) Tetrachloride (ug/1) Chloride (mg/I) (mg/I) (ui~m (owl)
12-Sep-02 140 ND
24-Nov-02 200 ND
28-Mar-03 260 ND
23-Jun-03 370 ND
12-Sep-03 350 ND
8-Nov-03 400 ND
29-Mar-04 430 ND
22-Jun-04 530 ND
l 7-Sep-04 400 ND
l 7-Nov-04 350 ND
16-Mar-05 240 ND
25-May-05 212 NA NA NA <0.1 NA
3 I-Aug-05 85 <l 3.2 43 <0.1 NA
1-Dec-05 14 <2.5 2.6 5.9 1.4 NA
9-Mar-06 39 <I I.I 21 3 60
14-Jun-06 13 <I 2.4 8.9 1.9 55
20-Jul-06 5.2 <l <1 2.7 2.7 60
8-Nov-06 13.6 <l <1 9.2 5.6 62
28-Feb-07 8.7 <l <l 6.5 12.3 79
27-Jun-07 2.6 <l <l 1.8 9.9 75
15-Aug-07 7.1 <l <l 5.1 5.4 66
10-Oct-07 1.4 <l <l <l 4.4 69
26-Mar-08 11 <1 <1 26 ND 52
25-Jun-08 <l <l <l <l 1.46 58
10-Sep-08 10 <1 <1 14 10.5 71
15-Oct-08 3.9 <1 <l 6.6 9.82 89
4-Mar-09 <l <1 <l <I 9.6 78
24-Jun-09 <1 <l <1 <I 8.9 76
15-Sep-09 <l <l <l <I 8.8 79
l 7-Dec-09 <I <1 <l <I 5.2 76
24-Feb-l0 <l <I <l <I 4.2 77
9-Jun-10 2.1 <l <l <I 4.7 64
24-Aug-10 4.3 <I <1 <I 4.6 72
6-Oct-10 3 <I <I <l 3.3 72
22-Feb-l l 15 ND ND ND 7 86
26-May-11 16 ND ND ND 5 81
17-Aug-ll 9.2 ND ND ND 1.7 63
16-Nov-11 ND ND ND 1.4 0.4 38
18-Jan-12 ND ND ND 1.7 0.1 48
Chloroform Carbon Chloromethane Methylene Nitrate Chloride TW4-16 (ug/1) Tetrachloride (ug/1) Chloride (mg/I) (mg/I) {u2f)) (u2f))
3 l-May-12 ND ND ND ND ND 53
30-Aug-12 ND ND ND ND ND 59
3-Oct-12 ND ND ND 3 ND 53
7-Feb-13 ND ND ND 3 ND 58.1
30-May-13 ND ND ND 4.21 ND 49.8
5-Sep-13 ND ND ND ND ND 54.4
7-Nov-13 13.4 ND ND ND 1.37 56.6
29-Jan-14 6.9 ND ND ND 3.16 66.8
22-May-14 14.6 ND ND ND 4.94 80.7
14-Aug-14 229 ND ND ND 5.1 80
24-Sep-14 31 1 ND ND ND NIA NIA
29-Oct-14 387 ND ND ND 8.40 92.1
12-Mar-15 153 ND ND ND 4.30 65.3
l l-Jun-15 65.3 ND ND ND 1.06 61
3-Sep-15 82 ND ND ND 1.18 65.8
28-Oct-15 112 ND ND ND 1.69 58.3
l 7-Mar-16 45.9 ND ND ND 1.63 56.5
26-May-16 93.4 ND ND ND 1.89 61.3
3-Aug-16 49 ND ND ND 2.20 60
26-Oct-l 6 92.9 ND ND ND 2.78 66.7
8-Mar-17 19.1 ND ND ND 2.75 62.2
20-Jun-17 64.3 ND ND ND 1.81 60.6
3-Aug-17 143 ND ND ND 2.63 67.1
l l-Oct-17 97.8 ND ND ND 2.12 54.2
20-Mar-18 170 ND ND ND 4.55 85.1
14-Jun-18 54.5 ND ND ND 2.83 62.5
30-Aug-18 54.5 ND ND ND 2.53 73.0
12-Dec-18 52.0 ND ND ND 2.88 68.8
19-Mar-19 60.6 ND ND ND 3.36 66.3
19-Jun-19 76.2 ND ND ND 2.43 71.5
12-Sep-19 99.8 ND ND ND 3.55 72.9
l 8-Dec-19 94.3 ND ND ND 3.37 88.6
18-Mar-20 113 ND ND ND 3.91 76.2
12-Jun-20 141 ND ND ND 4.44 79.7
19-Sep-20 220 ND ND ND 4.74 77.4
4-Nov-20 270 ND ND ND 5.73 85.9
24-Mar-21 248 ND ND ND 5.82 92.6
17-Jun-21 247 ND ND ND 6.74 87.4
23-Sep-21 202 ND ND ND 5.32 79.8
CbJQrofo1,'1.U' Carbon CC.b:1Ql1Q1Wiij Ul~tl . =thylen~
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I llWI) {JJe:11) (11g/Q (u'f/1) mg/1) .trog(J)
8-Dec-21 189 ND ND ND 4.85 89.9
23-Mar-22 150 ND ND ND 5.0 84.3
22-Jun-22 120 ND ND ND 4.2 93.2
15-Sep-22 138 ND ND ND 4.41 89.8
9-Dec-22 152 ND ND ND 4.75 91.0
29-Mar-23 179 ND ND ND 5.69 88.5
21-Jun-23 227 ND ND ND 5.02 94.2
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Chloroform Carbon Chloromethane Methylene Nitrate Chloride MW-32 (ug/1) Tetrachloride (ug/1) Chloride (mg/I) (mg/I) (u!!:/1) (ue/1)
12-Sep-02 1.6 ND
24-Nov-02 ND ND
28-Mar-03 ND ND
23-Jun-03 ND ND
12-Sep-03 ND ND
8-Nov-03 ND ND
29-Mar-04 ND ND . 22-Jun-04 ND ND
17-Sep-04 ND ND
17-Nov-04 ND ND
16-Mar-05 ND ND
30-Mar-05 ND ND
25-May-05 <1 NA NA NA <0.1 NA
31-Aug-05 <1 <1 3.2 <1 <0.1 NA
1-Dec-05 <1 <1 <1 <1 <0.1 NA
9-Mar-06 <1 <1 <1 <1 <0.1 32
14-Jun-06 <1 <1 3.5 <1 <0.1 30
20-Jul-06 <1 <1 1.8 <1 <0.1 32
8-Nov-06 <1 <1 1.5 <1 <0.1 31
28-Feb-07 <1 <1 <1 <1 <0.1 32
27-Jun-07 <1 <1 <1 <1 <0.1 32
15-Aug-07 <1 <1 <1 <1 <0.1 31
1 0-Oct-07 <1 <1 <1 <1 <0.1 32
26-Mar-08 <1 <1 <1 <1 <0.1 31
25-Jun-08 <1 <1 <1 <1 <0.05 29
10-Sep-08 <1 <1 <1 <1 <0.05 30
15-Oct-08 <1 <1 <1 <1 <0.05 26
4-Mar-09 <1 <1 <1 <1 <0.1 30
24-Jun-09 <1 <1 <1 <1 <0.1 31
15-Sep-09 <1 <1 <1 <1 <0.1 33
16-Dec-09 <1 <1 <1 <1 <0.1 34
17-Feb-10 <1 <1 <1 <1 <0.1 38
14-Jun-10 <1 <1 <1 <1 <0.1 32
16-Aug-10 <1 <1 <1 <1 <0.1 28
6-Oct-10 <1 <1 <1 <1 <0.1 24
23-Feb-11 ND ND ND ND ND 40
25-May-11 ND ND ND ND ND 31
16-Aug-11 ND ND ND ND ND 33
6-Dec-11 ND ND ND ND ND 32
Chloroform Carbon Chloromethane Methylene Nitrate Chloride MW-32 (ug/1) Tetrachloride (ug/1) Chloride (mg/I) (mg/I) (ug/l) (ue/1.)
18-Jan-12 ND ND ND ND ND 21
4-Jun-12 ND ND ND ND ND 32
5-Sep-12 ND ND ND ND ND 33
10-Oct-12 ND ND ND ND ND 35
13-Feb-13 ND ND ND ND ND 34.3
18-Jun-13 ND ND ND ND ND 34.9
4-Sep-13 ND ND ND ND ND 33
29-Oct-13 , ND ND ND ND ND 35.7
29-Jan-14 ND ND ND ND ND 34
23-May-14 ND ND ND ND ND 39.7
26-Aug-14 ND ND ND ND ND 34
29-Oct-14 ND ND ND ND ND 34.9
17-Mar-15 ND ND ND ND ND 36.3
11-Jun-15 ND ND ND ND ND 35.8
9-Sep-15 ND ND ND ND ND 37.7
28-Oct-15 ND ND ND ND ND 34.7
22-Mar-16 ND ND ND ND ND 36.7
8-Jun-16 ND ND ND ND ND 37.2
17-Aug-16 ND ND ND ND ND 37.5
31-Oct-16 ND ND ND ND ND 36.9
21-Mar-17 ND ND ND ND ND 33.7
21-Jun-17 ND ND ND ND ND 37.2
4-Aug-17 ND ND ND ND ND 38.1
12-Oct-17 ND ND ND ND ND 32.6
15-Mar-18 ND ND ND ND ND 39.4
14-Jun-18 ND ND ND ND ND 34.4
5-Sep-18 ND ND ND ND ND 41.2
29-Oct-18 ND ND ND ND ND 32.9
19-Mar-19 ND ND ND ND ND 35.3
18-Jun-19 ND ND ND ND ND 36.5
ll-Sep-19 ND ND ND ND ND 33.7
18-Dec-l 9 ND ND ND ND ND 36.3
18-Mar-20 ND ND ND ND ND 36.0
12-Jun-20 ND ND ND ND ND 35.6
18-Sep-20 ND ND ND ND ND 34.7
4-Nov-20 ND ND ND ND ND 31.3
22-Mar-21 ND ND ND ND ND 36.8
17-Jun-21 ND ND ND ND ND 35.8
23-Sep-21 ND ND ND ND ND 34.3
Chloroform I ':i txon Cblorometha:nc M(thyleni Nitrate Chloride MW-~ (ugLJ) 'l'fflft achloPJ~h~ (ug/1) Qto'f..ide (mg!l) (mg/1) tuwl) (u~/1)
9-Dec-21 ND ND ND ND ND 35.8
22-Mar-22 ND ND ND ND ND 28.6
16-May-22 ND ND ND ND ND 26.9
15-Sep-22 ND ND ND ND ND 37.2
8-Dec-22 ND ND ND ND ND 35.1
30-Mar-23 ND ND ND ND ND 36.8
14-Jun-23 ND ND ND ND ND 36.8
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Chloroform Carbon Chloromethane Methylene Nitrate Chloride TW4-18 (ug/1) Tetrachloride (ug/1) Chloride (mg/I) (mg/I) (uwl) (u2/l)
12-Sep-02 440 1.49
24-Nov-02 240 13.3
28-Mar-03 160 13.1
23-Jun-03 , 110 19
12-Sep-03 68.0 19.9
9-Nov-03 84.0 20.7
29-Mar-04 90.0 14
22-Jun-04 82.0 12.2
17-Sep-04 38.0 14.5
17-Nov-04 51.0 17.3
16-Mar-05 38.0 14.1
25-May-05 29.8 NA NA NA 12.9 NA
31-Aug-05 39 <1 2.8 <l 13.3 NA
l-Dec-05 14 <l 1.1 <l 7.3 NA
9-Mar-06 12.0 <l . 1.1 <l 5.9 5.9
14-Jun-06 12.0 <l 1.6 <l 4.7 35
20-Jul-06 10.8 <1 2.7 <l 6.1 35
8-Nov-06 I39 <1 <l <l 8.7 34
28-Feb-07 9.2 <1 <l <1 5.1 30
27-Jun-07 8.0 <1 <l <l 4.9 28
15-Aug-07 8.9 <l <l <l 5 32
10-Oct-07 7.4 <1 <l <l 4.4 27
26-Mar-08 6.4 <l <l <l 0.7 23
25-Jun-08 5.7 <l <l <l 4.55 23
10-Sep-08 8.0 <l <l <l 4.68 26
l 5-Oct-08 9.4 <l <l <l 5,15 30
4-Mar-09 11.0 <l <l <l 5.2 29
24-Jun-09 16.0 <l <l <l 6.2 30
15-Sep-09 13.0 <l <l <l 5.9 26
22-Dec-09 8.2 <l <l <I 5.4 30
24-Feb-10 69.0 <l <l <I 5.1 41
9-Jun-10 29.0 <l <l <l 9 35
12-Aug-10 29.0 <l <l <l 9 37
13-Oct-10 30.0 <l <l <l 10 50
22-Feb-l l 39.0 ND ND ND 10 52
26-May-l l 26.0 ND ND ND 9 36
17-Aug-ll 29.0 ND ND ND 4.6 23
7-Dec-11 28.0 ND ND ND 6.3 23
19-Jan-12 25.0 ND ND ND 4.4 18
Chloroform Carbon Chloromethane Methylene Nitrate Chloride TW4-18 (ug/1) Tetrachloride (ug/1) Chloride (mg/I) (mg/I) (u2'1) (ul?ll)
13-Jun-12 24.0 ND ND ND 6.6 30
l l-Sep-12 38.0 ND ND ND 6.6 26
3-Oct-12 30.0 ND ND ND 6 27
13-Feb-13 34.9 ND ND ND 5.58 23.1
13-Jun-13 37.9 ND ND ND 8.86 22.9
5-Sep-13 41.0 ND ND ND 12.1 36.2
13-Nov-13 44.3 ND ND ND 14.2 37.1
30-Jan-14 38.9 ND ND ND 12.8 40.9
22-May-14 34.8 ND ND ND 12.2 47
14-Aug-14 32.8 ND ND ND 9.8 49
28-Oct-14 33.0 ND ND ND 11.1 40.8
12-Mar-15 32.0 ND ND ND 11.7 41.6
l l-Jun-15 30.5 ND ND ND 9.69 43.5
3-Sep-15 28.7 ND ND ND 15.7 47.6
28-Oct-15 52.9 ND ND ND 6.24 39.4
l 7-Mar-16 56.6 ND ND ND 5.96 40.7
8-Jun-16 60.0 ND ND ND 5.43 43.8
3-Aug-16 56.3 ND ND ND 5.79 40.7
26-Oct-16 60.1 ND ND ND 5.24 43.9
16-Mar-17 62.0 ND ND ND 4.47 39.4
20-Jun-l 7 63.8 ND ND ND 4.5 41.6
3-Aug-17 62.8 ND ND ND 4.24 40.4
10-Oct-l 7 62.9 ND ND ND 4.43 37.1
15-Mar-18 62.3 ND ND ND 4.32 44.3
13-Jun-18 59.9 ND ND ND 4.09 39.5
30-Aug-18 56.2 ND ND ND 3.51 45.6
13-Dec-18 57.6 ND ND ND 3.60 38.2
19-Mar-19 52.8 ND ND ND 3.85 37.6
19-Jun-19 54.2 ND ND ND 4.01 39.5
l 1-Sep-19 56.2 ND ND ND 3.25 36.8
l 8-Dec-19 62.0 ND ND ND 3.02 42.7
18-Mar-20 57.0 ND ND ND 3.71 39.4
12-Jun-20 58.2 ND ND ND 3.62 41.4
l 8-Sep-20 60.0 ND ND ND 3.36 38.7
11-Nov-20 58.6 ND ND ND 3.67 39.6
18-Mar-21 52.0 ND ND ND 3.61 41.8
l 6-Jun-21 54.2 ND ND ND 4.24 37.7
22-Sep-2 l 49.9 ND ND ND 3.37 29.8
8-Dec-21 57.0 ND ND ND 3.90 41.1
tblorofol'tn ~!j),lr! Chlorome.tb1:1!1);e. MelbJli]tm NU, ..... alflJ½ t'll1)Q,~flll TW~I) CJag/,i) 'li't;!tracb~on~ (ug/1) ~'ride (mg/Q ·J»g/1) Juz!l) (u211)
23-Mar-22 56.0 ND ND ND 3.4 39.1
22-Jun-22 62.9 ND ND ND 3.4 48.1
14-Sep-22 60.6 ND ND ND 3A6 44.7
9-Dec-22 62.6 ND ND ND 3.60 44.4
29-Mar-23 54.4 ND ND ND 3.40 45.6
21-Jun-23 54.6 ND ND ND 3.40 47.1
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Chloroform Carbon Chloromethane Methylene Nitrate Chloride TW4-19 (ug/1) Tetrachloride (ug/1) Chloride (mg/I) (mg/I) (u!!fl) (ue:/1)
12-Sep-02 7700 47.6
24-Nov-02 5400 42
28-Mar-03 4200 61.4
15-May-03 4700 NA
23-Jun-03 4500 11.4
l 5-Jul-03 2400 6.8
15-Aug-03 2600 4
12-Sep-03 2500 5.7
25-Sep-03 4600 9.2
29-Oct-03 4600 7.7
9-Nov-03 2600 4.8
29-Mar-04 NA NA
22-Jun-04 NA NA
16-Aug-04 7100 9.91
l 7-Sep-04 2600 4.5
l 7-Nov-04 1800 3.6
16-Mar-05 2200 5.3
25-May-05 1200 5.7
31-Aug-05 1400 <5 <5 <5 4.6 NA
l-Dec-05 2800 <50 <50 <50 <0.1 NA
9-Mar-06 1200 <50 <50 <50 4 86
14-Jun-06 1100 <50 <50 <50 5.2 116
20-Jul-06 1120 <50 <50 <50 4.3 123
8-Nov-06 1050 1.6 2.6 <1 4.6 134
28-Feb-07 1200 1.3 <1 <1 4 133
27-Jun-07 1800 2.3
15-Aug-07 1100 1.9 <1 <1 4.1 129
1 0-Oct-07 1100 1.9 <l <1 4 132
26-Mar-08 1800 2.9 <l <l 2.2 131
25-Jun-08 1000 1 <1 <I 2.81 128
1 0-Sep-08 3600 8.6 <l <1 36.2 113
l 5-Oct-08 4200 12 <I <l 47.8 124
4-Mar-09 l 100 1.2 <I <1 3.2 127
24-Jun-09 990 1.2 <1 <I 2.4 132
15-Sep-09 6600 15 <1 <l 0.1 43
14-Dec-09 4700 16 <1 <l 26.7 124
17-Feb-10 940 1.3 <l <l 2 144
9-Jun-l 0 1800 4.2 <l <1 4.4 132
16-Aug-10 2000 4.9 <1 <1 5.9 142
Chloroform Carbon Chloromethane Methylene Nitrate Chloride TW4-19 (ug/1) Tetrachloride (ug/1) Chloride (mg/I) (mg/I) l (ue:/1) (_ue:/1) ,.-
I I-Oct-I 0 1200 1.3 <I <I 2.7 146
17-Feb-ll 3400 17 ND ND 17 135
7-Jun-11 4000 8.3 ND ND 12 148
17-Aug-11 970 2.1 ND ND 3 148
5-Dec-11 2200 5.4 ND ND 5 148
23-Jan-12 650 1.5 ND ND 0.6 138
6-Jun-12 460 I.I ND ND 2.4 149
5-Sep-12 950 3.5 ND ND 2.5 149
3-Oct-12 1500 4 ND ND 4.1 150
1 l-Feb-13 4210 5. 15 ND ND 7.99 164
5-Jun-13 2070 5.15 ND ND 2.95 148
3-Sep-13 8100 20.7 ND ND 17.6 179
29-Oct-13 942 6.42 ND ND 4.7 134
27-Jan-14 586 4.05 ND ND 1.62 134
19-May-14 810 5.51 ND ND 1.34 152
1 I-Aug-14 1410 1.9 8.3 ND 1.6 140
21-Oct-I 4 4310 4.8 ND ND 4.72 130
9-Mar-15 4660 8.92 ND ND 8.56 238
8-Jun-15 1570 2.62 ND ND 0.916 180
4-Sep-15 7860 7.78 ND ND 11.6 326
19-Oct-15 7840 12.2 5.46 ND 10.6 252
9-Mar-16 7780 13.5 1.40 ND 15.7 276
23-May-16 12600 23.1 ND ND 1.27 204
25-Jul-16 6040 9.89 ND ND 10.5 214
25-Jul-16 6040 9.89 ND ND 10.5 214
13-Oct-16 6640 10.8 ND ND 10.0 200
8-Mar-17 1240 3.06 ND ND 11.1 461
13-Jun-I 7 510 I.JS ND ND 0.243 135
26-Jul-17 8840 13.0 ND ND 1.12 218
l l-Oct-17 129 ND ND ND 0.377 139
12-Mar-18 2640 1.36 ND ND 8.61 193
8-Jun-18 2980 3.45 ND ND 0.494 138
22-Aug-18 1910 2.03 ND ND 2.55 166
28-Nov-l 8 5270 6.18 ND ND 0.233 140
8-Mar-19 2050 2.43 ND ND 6.58 197
5-Jun-19 11500 15.90 ND ND 8.96 160
4-Sep-19 6670 10.10 ND ND 0.332 153
I 0-Dec-19 551 ND ND ND 0.535 147
19-Feb-20 8720 13.7 5.41 ND 10.1 205
Chloroform Carbon Chloromethane Methylene Nitrate Chloride TW4-19 (ug/1) Tetrachloride (ug/1) Chloride (mg/I) I (mg/I) (JI2'1) (02/1)
27-May-20 7600 10.4 ND ND 1.14 147
4-Sep-20 1350 1.98 ND ND 11.6 188
28-Oct-20 660 1.10 ND ND 1.10 104
23-Feb-21 6660 8.40 ND ND 6.61 167
9-Jun-21 775 ND ND ND 4.04 115
24-Aug-21 4450 7.83 1.98 1.25 6.68 172
1-Dec-21 6950 13.20 ND ND 11.0 184
9-Mar-22 654 ND ND ND 1.7 119
8-Jun-22 2540 2.7 4.0 ND 1.4 128
30-Aug-22 4750 2.5 ND ND 4.76 178
30-Nov-22 7380 8.0 ND ND 3.58 129
7-Mar-23 230 ND ND ND 1.75 122
13-Jun-23 4850 3.1 3.4 ND 6.68 167
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Chloroform Carbon Chloromethane Methylene Nitrate Chloride TW4-21 (ug/1) Tetrachloride (ug/1) Chloride (mg/I) (mg/I) (uwll (ug/1)
25-May-05 192 NA NA NA 14.6 NA
31-Aug-05 78 <5 <5 <5 10.1 NA
l-Dec-05 86 <l 1.0 <l 9.6 NA
9-Mar-06 120 <2.5 <2.5 <2.5 8.5 347
14-Jun-06 130 <2.5 <2.5 <2.5 10.2 318
20-Jul-06 106 <2.5 <2.5 <2.5 8.9 357
8-Nov-06 139 2 <l <l 8.7 296
28-Feb-07 160 1.8 <I <I 8.7 306
27-Jun-07 300 5.8 <1 <1 8.6 327
15-Aug-07 140 <l <l <l 8.6 300
10-Oct-07 120 <l <l <l 8.3 288
26-Mar-08 380 7 . <l <l 14.3 331
25-Jun-08 160 1.7 <l <l 8.81 271
10-Sep-08 120 1.6 <l <l 7.57 244
l 5-Oct-08 170 2 <l <2 8.00 284
l l-Mar-09 180 <l <l <l 8.3 279
24-Jun-09 200 <l <l <l 8.1 291
15-Sep-09 140 <l <l <1 9.2 281
22-Dec-09 160 <l <l <1 8.4 256
25-Feb-10 170 <l <l <1 8.4 228
10-Jun-l 0 210 1.2 <l <l 12 266
12-Aug-10 390 9.2 <l <l 14 278
13-Oct-l 0 200 1.2 <l <l 7 210
22-Feb-ll 230 1.2 ND ND 9 303
28-Jun-l l 290 4.8 ND ND 12 290
17-Aug-ll 460 6.3 ND ND 14 287
7-Dec-11 390 6.7 ND ND 13 276
19-Jan-12 420 6.4 ND ND 15 228
13-Jun-12 400 5.4 ND ND 11 285
13-Sep-12 410 6 ND ND 13 142
4-Oct-12 390 7 ND ND 14 270
13-Jan-13 282 5.25 ND ND 11.8 221
l 8-Jun-13 328 3.49 ND ND 13.8 243
12-Sep-13 244 2.13 ND ND 10.3 207
13-Nov-13 204 ND ND ND 9 206
5-Feb-14 220 6.23 ND ND 11.4 200
22-May-14 240 4.73 ND ND 11.5 243
27-Aug-14 204 ND ND ND 7.1 230
29-Oct-14 229 1.04 ND ND 10 252
' Carbon Methylene Chloroform Chloromethane Nitrate Chloride TW4-21 (ug/1) Tetrachloride (ug/1) Chloride (mg/I) (mg/I) (ug/1) (µell)
12-Mar-15 292 1.75 ND ND 10.9 255
8-Jun-15 366 1.92 ND ND 13.1 494
31-Aug-15 281 ND ND ND 14.7 499
19-Oct-15 339 ND ND ND 14.3 413
9-Mar-16 390 ND ND ND 14.6 452
23-May-16 545 ND ND ND 13.1 425
25-Jul-16 456 ND ND ND 16.5 457
12-Oct-16 434 ND ND ND 11.4 301
12-Oct-16 434 ND ND ND 11.4 301
8-Mar-17 598 2.36 ND ND 12.0 290
13-Jun-l 7 224 1.16 ND ND 9.53 309
26-Jul-l 7 537 1.05 ND ND 18.2 447
l l-Oct-17 466 ND ND ND 16.9 378
12-Mar-18 421 ND ND ND 15.8 447
8-Jun-18 532 ND ND ND 14.1 387
22-Aug-18 476 ND ND ND 0.236 182
22-Oct-l 8 585 ND ND ND 15.2 392
8-Mar-19 323 ND ND ND 8.99 180
5-Jun-19 734 ND ND ND 17.5 456
4-Sep-19 596 ND ND ND 14.7 478
10-Dec-19 794 ND ND ND 5.73 339
19-Feb-20 844 ND 2.58 ND 8.93 446
27-May-20 767 ND ND ND 15.4 353
4-Sep-20 920 ND ND ND 12.6 382
28-Oct-20 948 ND ND ND 16.3 411
23-Feb-21 400 ND ND ND 15.2 454
9-Jun-21 1130 ND ND ND 21.5 461
24-Aug-21 669 ND ND ND 12.9 375
l-Dec-21 649 ND ND ND 17.2 227
9-Mar-22 469 ND ND ND 2.2 110
8-Jun-22 657 ND ND ND 8.9 331
30-Aug-22 1070 ND ND ND 14.J 425
30-Nov-22 482 ND ND ND 2.12 158
7-Mar-23 526 ND ND ND 10.9 335
13-Jun-23 768 ND 1.4 ND 17.3 397
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Chloroform Carbon Chloromethane Methylene Nitrate Chloride TW4-22 (ug/1) Tetrachloride (ug/1) Chloride (mg/I) (mg/I) (uwI) (u_wI)
25-May-05 340 NA NA NA 18.2 NA
31-Aug-05 290 <5 <5 <5 15.7 NA
1-Dec-05 320 <5 <5 <5 15.1 NA
9-Mar-06 390 <10 <10 <10 15.3 236
14-Jun-06 280 <10 <10 <10 14.3 221
20-Jul-06 864 <10 <10 <10 14.5 221
8-Nov-06 350 <I 1.6 <1 15.9 236
28-Feb-07 440 <l <l <1 20.9 347
27-Jun-0T 740 <l <l <I 19.3 273
15-Aug-07 530 <l <l <l 19.3 259
1 0-Oct-07 440 <l <l <l 18.8 238
26-Mar-08 1400 <l <l <l 39.1 519
25-Jun-08 1200 <l <l <l 41.9 271
10-Sep-08 6300 1.3 <l <l 38.7 524
15-Oct-08 630 <2 <2 <2 36.3 539
l l-Mar-09 390 <l <l <l 20.7 177
24-Jun-09 730 <l <l <l 20.6 177
15-Sep-09 2300 <l <l <l 40.3 391
29-Dec-09 380 <l <l <l 17.8 175
3-Mar-10 2200 <l <l <l 36.6 427
15-Jun-l 0 540 <l <l <l 19 134
24-Aug-l0 340 <l <l <1 15 130
13-Oct-10 340 <l <l <1 16 134
23-Feb-ll 1300 ND ND ND 18 114
I-Jun-I I 210 ND ND ND 17 138
17-Aug-l l 450 ND ND ND 15 120
7-Dec-11 ,400 ND ND ND 19 174
19-Jan-12 200 ND ND ND 14 36
13-Jun-12 120 ND ND ND 12.8 35
12-Sep-12 940 ND ND ND 7 121
4-Oct-12 330 ND ND ND 14 130
ll-Feb-13 10600 3.24 ND ND 58 635
5-Jun-13 12500 3.35 ND ND 50.2 586
3-Sep-13 9640 3.25 ND ND 29.7 487
29-Oct-13 '13300 8.09 ND ND 45.2 501
27-Jan-14 12100 6.06 ND 2.83 54.6 598
19-May-14 12400 6.65 ND ND 47.2 614
I l-Aug-14 12400 1.9 40 ND 41.5 540
21-Oct-14 12400 3.32 1.61 ND 54.9 596
-Carbon Methylene Chloroform Chloromethane Nitrate Chloride TW4-22 (ug/1) Tetrachloride (ug/1) .Chloride (mg/I) (mg/I) (u,ul) (ug/1)
9-Mar-15 12700 3.77 4.31 ND 69.2 675
8-Jun-15 8050 2.42 3.42 ND 47.1 390
31-Aug-15 7810 ND 5.47 ND 64.7 557
19-Oct-15 7530 ND 5.1 ND 56.1 567
9-Mar-16 6070 ND ND ND 31.1 583
23-May-16 8570 2.64 ND ND 58.4 598
25-Jul-16 5840 ND ND ND 61.3 619
12-Oct-16 3370 1.08 ND ND 61.5 588
8-Mar-17 5320 I.56 ND ND 69.8 566
13-Jun-l 7 3670 1.21 ND ND 70.8 572
26-Jul-17 5150 ND ND ND 66.1 391
ll-Oct-17 4770 ND ND ND 80.1 600
12-Mar-18 4530 ND ND ND 62.3 607
8-Jun-18 3010 ND ND ND 72.5 580
22-Aug-18 3600 ND ND ND 55.4 613
28-Nov-18 2680 ND ND ND 75.7 567
8-Mar-19 4310 1.02 ND ND 71.9 528
5-Jun-19 4690 ND 1.13 ND 83.9 662
4-Sep-19 3460 ND ND ND 72.5 588
10-Dec-19 3820 ND ND ND 59.9 608
19-Feb-20 3910 ND ND ND 57.7 606
27-May-20 2530 ND ND ND 60.5 578
4-Sep-20 3760 ND ND ND 64.8 514
28-Oct-20 3640 ND 6.83 ND 64.9 523
23-Feb-21 5100 ND ND ND 69.6 618
9-Jun-21 4520 ND ND ND 89.3 408
24-Aug-21 3510 ND ND ND 35.1 410
l-Dec-21 3330 ND ND ND 68.8 586
9-Mar-22 3320 ND ND ND 40.4 442
8-Jun-22 2600 ND 4.4 ND 45 564
30-Aug-22 3190 ND ND ND 69.9 637
30-Nov-22 2350 ND ND 1.6 62.0 601
7-Mar-23 1900 ND ND 1.3 49.1 562
13-Jun-23 2180 ND 3.3 2.1 49.8 596
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Chloroform Carbon Chloromethane M_ethylene Nitrate Chloride TW4-23 (ug/1) Tetrachloride (ug/1) Chloride (mg/I) (mg/I) (u2'1) (uell)
27-Jun-07 <l <l <l <l <0.1 47
15-Aug-07 <l <l <l <l <0.1 46
1 0-Oct-07 <l <l <l <l <0.1 43
26-Mar-08 <l <l <l <l <0.1 41
25-Jun-08 <1 <1 <1 <1 <0.05 41
10-Sep-08 <l <1 <1 <1 <0.05 35
l 5-Oct-08 <2 <2 <2 <2 <0.05 51
4-Mar-09 <l <1 <1 <1 <0.1 41
24-Jun-09 <l <l <l <l <0.1 43
15-Sep-09 <l <l <l <l <0.1 43
16-Dec-09 <l <l <l <1 <0.1 37
24-Feb-10 <1 <l <1 <1 <0.1 45
8-Jun-10 <1 <1 <l <I <0.1 40
IO-Aug-IO <l <1 <1 <I <0.1 40
5-Oct-10 <l <l <l <I <0.1 34
16-Feb-l l ND ND ND ND ND 44
25-May-l l ND ND ND ND ND 44
16-Aug-l l ND ND ND ND ND 41
15-Nov-l l ND ND ND ND ND 43
l 7-Jan-12 ND ND ND ND ND 40
31-May-12 ND ND ND ND ND 44
29-Aug-12 ND ND ND ND ND 46
3-Oct-12 ND ND ND ND ND 45
7-Feb-13 ND ND ND ND ND 43.6
30-May-13 ND ND ND ND 0.116 44.7
5-Sep-13 ND ND ND ND ND 48.0
7-Nov-13 ND ND ND ND ND 43.0
23-Jan-14 ND ND ND ND ND 44.6
21-May-14 ND ND ND ND ND 42.3
13-Aug-14 ND ND ND ND ND 46.0
28-Oct-14 ND ND ND ND ND 46.8
12-Mar-15 ND ND ND ND ND 47.3
10-Jun-15 ND ND ND ND ND 48.4
3-Sep-15 ND ND ND ND ND 54.1
28-Oct-15 ND ND ND ND ND 46.4
16-Mar-16 ND ND ND ND ND 49.1
26-May-16 ND ND ND ND ND 50.4
3-Aug-16 ND ND ND ND ND 49.6
20-Oct-16 ND ND ND ND ND 52.1
Chloroform Carbon Chloromethane Methylene Nitrate Chloride TW4-23 (ug/1) Tetrachloride (ug/1) Chloride (mg/I) (mg/I) (Jig/I) (ue:/1)
15-Mar-l 7 ND ND ND ND ND 47.7
15-Jun-l 7 ND ND ND ND ND 51.5
2-Aug-17 ND ND ND ND ND 51.8
10-Oct-17 ND ND ND ND ND 44.7
14-Mar-18 ND ND ND ND ND 53.8
13-Jun-l 8 ND ND ND ND ND 47.6
30-Aug-l 8 ND ND ND ND ND 56.0
12-Dec-18 ND ND ND ND ND 54.9
16-Mar-19 ND ND ND ND ND 48.9
13-Jun-19 ND ND ND ND ND 50.2
l l-Sep-19 ND ND ND ND ND 47.9
14-Dec-19 ND ND ND ND ND 54.4
l 7-Mar-20 ND ND ND ND ND 50.0
l l-Jun-20 ND ND ND ND ND 49.0
l 7-Sep-20 ND ND ND ND ND 48.8
4-Nov-20 ND ND ND ND ND 49.3
l 7-Mar-21 ND ND ND ND ND 51.6
16-Jun-21 ND ND ND ND ND 48.8
15-Sep-21 ND ND ND ND ND 42.8
8-Dec-21 ND ND ND ND ND 51.2
22-Mar-22 ND ND ND ND ND 43.8
16-Jun-22 ND ND ND ND 0.10 49.2
14-Sep-22 ND ND ND ND ND 45.0
7-Dec-22 ND ND ND ND ND 47.5
29-Mar-23 ND ND ND ND ND 50.2
20-Jun-23 ND ND ND ND ND 51.3
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Chloroform Carbon Chloromethane Methylene Nitrate Chloride TW4-24 (ug/1) Tetrachloride (ug/1) Chloride (mg/I) (mg/I)
I fowl) (ue/1)
27-Jun-0T 2.6 <l <1 <1 26.1 770-
15-Aug-07 2.2 <1 <1 <1 29 791
10-Oct-07 1.5 <l <1 <:l 24.7 692
26-Mar-08 1.5 <1 <1 <1 24.4 740
25-Jun-08 1.4 <l <l <l 45.3 834
10-Sep-08 2.9 <l <l <l 38.4 1180
15-Oct-08 <2 <2 <2 <2 44.6 1130
4-Mar-09 1.4 <l <l <l 30.5 1010
24-Jun-09 1.5 <l <l <l 30.4 759
15-Sep-09 1.4 <1 <l <l 30.7 618
17-Dec-09 1.2 <l <1 <l 28.3 1080
25-Feb-10 1.3 <1 <1 <l 33.1 896
9-Jun-10 1.7 <1 <1 <1 30 639
24-Aug-10 1.8 <l <1 <1 31 587
6-Oct-10 1.4 <l <1 <l 31 522
17-Feb-ll 1.8 ND ND ND 31 1100
26-May-l l 1.1 ND ND ND 35 1110
17-Aug-l I 1.7 ND ND ND 34 967
7-Dec-11 1.2 ND ND ND 35 608
l 8-Jan-12 ND ND ND ND 37 373
6-Jun-12 ND ND ND ND 37 355
30-Aug-12 1.1 ND ND ND 37 489
3-Oct-12 1.0 ND ND ND 38 405
l l-Feb-13 5.7 ND ND ND 35.9 1260
5-Jun-13 17.4 ND ND ND 23.7 916
3-Sep-13 21.8 ND ND ND 32.6 998
29-Oct-13 32.5 ND ND ND 34.6 1030
27-Jan-14 78.5 ND ND 1.18 31.6 809
19-May-14 62.7 ND ND ND 35 1020
l l-Aug-14 76.3 ND ND ND 31.5 1150
21-Oct-14 25.8 ND ND ND 35.7 1050
9-Mar-15 49.2 ND ND ND 34.6 944
8-Jun-15 4.3 ND ND ND 31.8 1290
31-Aug-15 46.9 ND ND ND 25.3 788
19-Oct-15 25.3 ND ND ND 29.6 909
9-Mar-16 22.8 ND ND ND 29.1 989
23-May-16 69.6 ND ND ND 24.2 771
25-Jul-16 17.8 ND ND ND 34.4 1180
12-Oct-16 20.8 ND ND ND 31.9 1010
Chloroform Carbon Chloromethane Methylene Nitrate Chloride TW4-24 (ug/1) Tetrachloride (ug/1) Chloride (mg/I) (mg/I) (_u2').) (ue/1)
8-Mar-17 18.3 ND ND ND 41.3 1090
13-Jun-l 7 17.2 ND ND ND 39.9 1080
26-Jul-l 7 17.8 ND ND ND 40.0 1230
l l-Oct-17 16.0 ND ND ND 31.7 895
12-Mar-18 24.9 ND ND ND 44.9 1320
14-Jun-18 49.2 ND ND ND 33.6 792
22-Aug-18 35.0 ND ND ND 33.8 996
28-Nov-18 21.0 ND ND ND 38.4 1100
8-Mar-19 28.1 ND ND ND 39.3 1040
5-Jun-19 28.8 ND ND ND 33.2 1020
4-Sep-19 31.1 ND ND ND 36.4 1130
10-Dec-19 43.3 ND ND ND 33 .8 1090
19-Feb-20 61.7 ND ND ND 37.1 1010
27-May-20 49.4 ND ND ND 41.7 1060
4-Sep-20 63.8 ND ND ND 39.1 1100
28-Oct-20 72.6 ND ND ND 35.9 1050
23-Feb-21 96.2 ND 3.6 ND 41.9 1170
9-Jun-21 41.2 ND ND ND 48.0 938
24-Aug-21 103 ND ND ND 26.7 1010
I-Dec-21 112 ND ND ND 43.6 1140
9-Mar-22 114 ND ND ND 36.2 890
8-Jun-22 124 ND ND ND 35 944
30-Aug-22 88.9 ND ND ND 32.0 868
30-Nov-22 79.5 ND ND ND 27.6 972
7-Mar-23 99.5 ND ND ND 36.2 932
13-Jun-23 58.5 ND ND ND 35.9 866
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Chloroform Carbon Chloromethane Methylene Nitrate Chloride TW4-25 (ug/1) Tetrachloride (ug/1) Chloride (mg/I) (mg/I) (ut!ll) (ue/1)
27-Jun-07 <l <I <I <I 17 .1 395
15-Aug-07 <l <l <l <l 16.7 382
10-Oct-07 <l <l <l <l 17 356
26-Mar-08 <l <l <l <l 18.7 374
25-Jun-08 <1 <1 <1 <l 22.1 344
10-Sep-08 <l <l <l <l 18.8 333
l 5-Oct-08 <2 <2 <2 <2 21.3 366
4-Mar-09 <1 <1 <I <1 15.3 332
24-Jun-09 <1 <1 <1 <1 15.3 328
15-Sep-09 <l <1 <1 <1 3.3 328
16-Dec-09 <l <I <l <1 14.2 371
23-Feb-10 <l <I <l <l 14.4 296
8-Jun-10 <l <I <l <l 16 306
10-Aug-l0 <l <I <l <1 14 250
5-Oct-l 0 <I <I <1 <l 15 312
16-Feb-l 1 ND ND ND ND 15 315
25-May-11 ND ND ND ND 16 321
16-Aug-l 1 ND ND ND ND 16 276
15-Nov-l l ND ND ND ND 16 294
18-Jan-12 ND ND ND ND 16 304
31-May-12 ND ND ND ND 16 287
l l-Sep-12 ND ND ND ND 17 334
3-Oct-12 ND ND ND ND 17 338
I I-Feb-13 ND ND ND ND 9.04 190
5-Jun-13 ND ND ND ND 5.24 136
3-Sep-13 ND ND ND ND 5.69 119
29-Oct-13 ND ND ND ND 6.1 88.6
27-Jan-14 ND ND ND ND 2.16 85.7
19-May-14 ND ND ND ND 1.21 51.1
11-Aug-14 ND ND ND ND 1.6 67
21-Oct-14 ND ND ND ND 1.03 58.1
9-Mar-15 ND ND ND ND 14.4 310
8-Jun-15 ND ND ND ND 1.14 58.3
31-Aug-15 ND ND ND ND 1.63 69.2
21-Oct-15 ND ND ND ND 1.78 93.7
9-Mar-16 ND ND ND ND 0.837 62.7
23-May-16 ND ND ND ND 0.959 75.5
25-Jul-16 ND ND ND ND 1.78 74.1
12-Oct-16 ND ND ND ND 1.24 59.8
Chloroform Carbon Chloromethane Methylene Nitrate Chloride TW4-2S (og/1) Tetrachloride (og/1) Chloride (mg/I) (mg/I) (own (owl) ~
8-Mar-17 1.15 ND ND ND 17 285
13-Jun-17 ND ND ND ND 0.976 69.8
26-Jul-17 ND ND ND ND 1.23 70.1
1 l-Oct-17 ND ND ND ND 1.29 68.0
12-Mar-18 ND ND ND ND 2.23 70.5
14-Jun-l 8 ND ND ND ND 1.14 60.3
22-Aug-18 ND ND ND ND 0.810 69.1
28-Nov-18 ND ND ND ND 0.634 59.7
8-Mar-19 ND ND ND ND 0.639 65.0
5-Jun-19 ND ND ND ND 0.821 59.0
4-Sep-19 ND ND ND ND 0.548 58.1
1 0-Dec-19 ND ND ND ND 0.841 73.1
19-Feb-20 ND ND ND ND 0.607 86.0
27-May-20 ND ND ND ND 0.851 76.8
4-Sep-20 ND ND ND ND 0.994 67.3
28-Oct-20 ND ND ND ND 1.64 61.3
23-Feb-21 ND ND ND ND 3.43 100
9-Jun-21 ND ND ND ND 1.57 55.l
24-Aug-21 ND ND 1 ND 0.793 69.3
l-Dec-21 ND ND ND ND 0.978 93.7
9-Mar-22 ND ND ND ND 1.8 70.3
8-Jun-22 ND ND ND ND 0.88 72.8
30-Aug-22 ND ND ND ND 1.51 82.5
30-Nov-22 ND ND ND ND 1.47 67.2
7-Mar-23 ~ ND ND ND 1.96 96.7
13-Jun-23 ND ND ND ND 1.03 73.0
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Chloroform Carbon Chloromethane Methylene Nitrate Chloride TW4-26 (ug/1) Tetrachloride (ug/1) Chloride (mg/I) (mg/I) (u2fl) (u2/l)
15-Jun-10 13 <1 <1 <l 7.9 33
11-Aug-10 5 <l <1 <1 9 17
6-Oct-10 5.4 <1 <l <1 9.6 22
22-Feb-l l 2.0 ND ND ND 10 30
26-May-l l 2.9 ND ND ND 10 15
17-Aug-ll 2.8 ND ND ND 11 19
7-Dec-11 5.2 ND ND ND 10 26
18-Jan-12 7.0 ND ND ND 11 17
6-Jurt-12 4.1 ND ND ND 12 19
l 1-Sep-12 4.9 ND ND ND 9 19
3-Oct-12 6.0 ND ND ND 12 19
7-Feb-13 5.0 ND ND ND 12.5 16.6
13-Jun-13 2.1 ND ND ND 13.6 14.5
5-Sep-13 2.8 ND ND ND 11.7 17.6
7-Nov-13 3.4 ND ND ND 15.9 15.9
29-Jan-14 1.4 ND ND ND 14.2 16.9
21-May-14 4.2 ND ND ND 12.5 15.4
I I-Aug-14 1.3 ND ND ND 10.8 15
28-Oct-14 2.45 ND ND ND 12.3 14.6
12-Mar-15 2.37 ND ND ND 14.4 14.4
10-Jun-15 6.12 ND 1.17 ND 11.3 14.4
3-Sep-15 4.77 ND ND ND 14.2 14.0
28-Oct-l 5 3.45 ND ND ND 13.9 13.3
16-Mar-16 1.80 ND ND ND 16.9 13.7
26-May-l6 8.23 ND ND ND 15.2 13.9
3-Aug-16 4.42 ND ND ND 17.9 13.9
20-Oct-16 19.9 ND ND ND 15.0 14.2
16-Mar-l 7 46.1 ND ND ND 15.8 16.2
20-Jun-l 7 244 ND ND ND 15.2 19.0
3-Aug-17 419 ND ND ND 15.2 25.8
1 l-Oct-17 608 ND ND ND 10.0 27.3
21-Mar-18 1050 ND ND ND 12.2 35.5
14-Jun-18 960 ND ND ND 13.2 33.5
5-Sep-18 916 ND ND ND 13.5 38.9
13-Dec-l 8 1050 ND ND ND 11.8 33.4
20-Mar-19 963 ND ND ND 12.2 32.9
19-Jun-19 1070 ND ND ND 12.6 35.8
12-Sep-19 877 ND ND ND 10.9 32.0
I 8-Dec-19 1070 ND ND ND 10.3 38.3
18-Mar-20 1090 ND ND ND 11.9 36.3
12-Jun-20 1140 ND ND ND 11.1 35.1
Chloroform Carbon Chloromethane Methylene Nitrate Chloride TW4-26 (ug/1) Tetrachloride (ug/1) Chloride (mg/I) (mg/I) (ul!ll) (ul!fl)
19-Sep-20 1120 ND ND ND 10.5 34.8
I I-Nov-20 1160 ND ND ND 11.9 36.3
24-Mar-21 1030 ND ND ND 11.3 38.9
I 7-Jun-21 1020 ND ND ND 14.2 34.0
23-Sep-21 927 ND ND ND 12.1 36.5
9-Dec-21 993 ND ND ND 8.15 34.9
24-Mar-22 952 ND 2.4 ND 10.9 33.0
22-Jun-22 790 ND 2.4 ND 9.9 34.0
15-Sep-22 930 ND ND ND 10.3 36.7
9-Dec-22 890 ND ND ND 10.4 32.7
29-Mar-23 703 ND ND ND 10.5 34.5
2 I-Jun-23 659 ND ND ND 10.0 33.5
0
Jun-10
Nov-10
Apr-11
Sep-11 :1
Feb-12
Jul-12
Dec-12 ~
May-13
Oct-13
Mar-14
Aug-14
Jan-15
Jun-15 j
Nov-15 -
Apr-16 ·;
Sep-16
Feb-17
Jul-17
Dec-17
May-18
Oct-18
Mar-19
Aug-19
Jan-20
Jun-20
Nov-20
Apr-21
Sep-21
Feb-22
Jul-22
Dec-22
May-23
N 0 0
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(ug/1)
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Chloroform Carbon Chloromethane Methylene Nitrate Chloride TW4-27 Tetrachloride (ug/1) (u2/I) (ug/1) Chloride (ug/1) (mg/I) (mg/I)
24-Jan-12 9 ND ND ND 24 11
13-Jun-12 ND ND ND ND 41 17
30-Aug-12 ND ND ND ND 37 21
3-Oct-12 ND ND ND ND 36 18
7-Feb-13 ND ND ND ND 31.2 18.8
30-May-13 ND ND ND ND 29.4 20.3
29-Aug-13 ND ND ND ND 27.2 19
6-Nov-13 ND ND ND ND 29.8 21.8
23-Jan-14 ND ND ND ND 31.3 21.8
21-May-14 ND ND ND ND 31.1 20.6
13-Aug-14 ND ND ND ND 27.0 23
23-Oct-14 ND ND ND ND 28.2 24.4
II-Mar-15 ND ND ND ND 26.5 26.2
10-Jun-15 ND ND ND ND 24.0 26.8
2-Sep-15 1.30 ND ND ND 20.9 26.8
28-Oct-l 5 1.60 ND ND ND 23.5 26.2
16-Mar-16 2.11 ND ND ND 25.0 28.0
26-May-16 3.16 ND ND ND 21.2 28.7
3-Aug-16 2.78 ND ND ND 21.8 27.1
20-Oct-16 3.80 ND ND ND 19.3 29.4
15-Mar-l 7 433 ND ND ND 22.2 28.3
I 5-Jun-17 5.65 ND ND ND 23.8 27.9
2-Aug-17 6.05 ND ND ND 20.0 29.5
10-Oct-17 5.91 ND ND ND 21.5 26.3
14-Mar-18 6.95 ND ND ND 19.5 30.3
13-Jun-18 5.95 ND ND ND 22.0 28.3
30-Aug-l 8 7.32 ND ND ND 18.1 31.4
12-Dec-l 8 7.70 ND ND ND 20.8 28.2
16-Mar-19 6.54 ND ND ND 21.5 26.2
13~Jun-19 8.24 ND ND ND 22.3 28.6
I I-Sep-19 7.58 ND ND ND 21.2 25.3
14-Dec-19 7.97 ND ND ND 22.0 27.4
l 7-Mar-20 8.04 ND ND ND 23.6 27.6
I I-Jun-20 7.92 ND ND ND 21.5 28.0
18-Sep-20 5.62 ND ND ND 25.2 26.2
4-Nov-20 7.80 ND ND ND 16.7 26.8
18-Mar-21 4.66 ND ND ND 23.0 27.5
16-Jun-21 4.26 ND ND ND 23.8 25.8
15-Sep-21 3.81 ND ND ND 21.1 21.7
8-Dec-21 4.08 ND ND ND 24.9 26.4
23-Mar-22 3.3 ND ND ND 21.3 22.7
16-Jun-22 3.1 ND ND ND 20 22.3
adnroform e.tttm Qfor..onwt,ltane M.~h;y:J~ne ---Chloride TW~ 'te.trachloride l(ug/1) (ue/1) (ugtU'1 Chloride (ugll} {mg/I) (mg/t)
-
14-Sep-22 4.3 ND ND ND 16.9 23.2
8-Dec-22 2.3 ND ND ND 18.1 16.2
29-Mar-23 2.0 ND ND ND 20.9 22.8
21-Jun-23 2.5 ND ND ND 16.9 25.7
(ug/1)
0 f--' N w .I>, V, Cl'l -..J 00 \D f--' 0
~;~!H I\ I I I I I I I i I
Sep-12
Nov-12 -
Jan-13
Mar-13
May-13
Jul-13
Sep-13
Nov-13
Jan-14
Mar-14
May-14
Jul-14 •
Sep-14
Nov-14
Jan-15
Mar-15
May-15
Jul-15 .
1 Sep-15 -
Nov-15 .
Jan-16 ·
Mar-16 • May-16 .
Jul-16 -
Sep-16 ~
Nov-16 ·
Jan-17
Mar-17
May-17 "' Jul-17 .I
Sep-17
Nov-17 •
Jan-18
Mar-18 ·
May-18
Jul-18
Sep-18
Nov-18 1
Jan-19
Mar-19 •
May-19 •.
Jul-19 -
Sep-19
Nov-19 ·
Jan-20
Mar-20 -
May-20
Jul-20 -
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Nov-20 :.
Jan-21 •·
Mar-21 -
May-21 .
Jul-21 ·
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Chloroform Carbon Chloromethane Methylene Nitrate Chloride TW4-28 (ug/1) Tetrachloride (ug/1) Chloride (mg/I) (mg/I) (u2'1) (u2/l)
I 9-Jun-13 ND ND ND ND 14.9 44.6
29-Aug-13 ND ND ND ND 17.3 45.3
6-Nov-13 ND ND ND ND 16.2 45.2
22-Jan-14 ND ND ND ND 16.9 47.8
21-May-14 ND ND ND ND 16.5 45.7
13-Aug-14 ND ND ND ND 14.2 50
23-Oct-14 ND ND ND ND 16.5 52.1
l l-Mar-15 ND ND ND ND 19 52.2
10-Jun-15 ND ND ND ND 19 56.4
2-Sep-15 ND ND ND ND 17.8 61.4
21-Oct-15 ND ND ND ND 18.7 52.7
15-Mar-16 ND ND ND ND 34.0 61.6
25-May-16 ND ND ND ND 29.0 67.1
27-Jul-16 ND ND ND ND 31.3 70.1
l 9-Oct-16 ND ND ND ND 25.5 70.9
14-Mar-l 7 ND ND ND ND 24.4 64.2
14-Jun-l 7 ND ND ND ND 26.0 68.6
27-Jul-17 ND ND ND ND 24.8 67.1
I 0-Oct-17 ND ND ND ND 24.8 57.4
14-Mar-18 ND ND ND ND 17.2 65.0
12-Jun-l 8 ND ND ND ND 19.0 55.7
29-Aug-18 ND ND ND ND 16.0 63.8
30-Nov-l8 ND ND ND ND 17.7 52.4
16-Mar-19 ND ND ND ND 17.2 51.7
13-Jun-l 9 ND ND ND ND 15.0 51.8
l l-Sep-19 ND ND ND ND 10.2 49.0
12-Dec-19 ND ND ND ND 9.48 50.0
17-Mar-20 ND ND ND ND 9.87 52.1
10-Jun-20 ND ND ND ND 9.55 49.8
l 7-Sep-20 ND ND ND ND 8.36 47.4
4-Nov-20 ND ND ND ND 7.76 49.0
l 7-Mar-21 ND ND ND ND 8.68 51.8
15-Jun-21 ND ND ND ND 9.09 48.5
15-Sep-21 ND ND ND ND 8.08 40.7
7-Dec-21 ND ND ND ND 7.06 47.8
15-Mar-22 ND ND ND ND 7.8 38.8
l 5-Jun-22 ND ND ND ND 15 52.3
13-Sep-22 ND ND ND ND 16.2 58.5
7-Dec-22 ND ND ND ND 16.6 52.0
22-Mar-23 ND ND ND ND 11.9 46. l
I 5-Jun-23 ND ND ND ND 11.9 51.3
Jun-13
Sep-13
Dec-13
Mar-14
Jun-14
Sep-14
Dec-14
Mar-15
Jun-15
Sep-15
Dec-15
Mar-16
Jun-16
Sep-16
Dec-16
Mar-17
Jun-17
Sep-17
Dec-17
Mar-18
Jun-18
Sep-18
Dec-18
Mar-19
Jun-19
Sep-19
Dec-19
Mar-20
Jun-20
Sep-20
Dec-20
Mar-21
Jun-21
Sep-21
Dec-21
Mar-22
Jun-22
Sep-22
Dec-22
Mar-23
Jun-23
0
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Chloroform Carbon Chloromethane Methylene Nitrate Chloride TW4-29 (ug/1) Tetrachloride (ug/1) Chloride (mg/I) (mg/I) (uell) (ue/1)
19-Jun-13 242 ND ND ND 4.63 44.8
I l-Jul-13 262 ND ND ND 3.52 37.7
26-Sep-13 246 ND ND ND 4.18 41.4
13-Nov-13 260 ND ND ND 4.11 42.5
5-Feb-14 258 ND ND ND 4.63 41.9
22-May-14 262 ND ND ND 3.52 38.2
27-Aug-14 242 ND ND ND 3.4 41
29-Oct-14 290 ND ND ND 3.64 41
l 2-Mar-15 299 ND ND ND 4.14 40.5
I l-Jun-15 329 ND ND ND 2.95 42.5
3-Sep-15 276 ND ND ND 2.19 47.3
29-Oct-15 631 ND ND ND 2.74 39.8
l 7-Mar-16 335 ND ND ND 2.92 40.3
8-Jun-16 366 ND ND ND 2.51 42.9
4-Aug-16 401 ND ND ND 2.44 40.6
26-Oct-16 392 ND ND ND 2.4 44.2
16-Mar-17 446 ND ND ND 2.24 41.5
21-Jun-l 7 420 ND ND ND 2.26 42.0
4-Aug-17 466 ND ND ND 2.35 42.9
l 1-Oct-17 466 ND ND ND 2.45 37.7
21-Mar-18 533 ND ND ND 2.44 43.1
14-Jun-l 8 474 ND ND ND 2.67 40.l
5-Sep-18 454 ND ND ND 2.52 45.9
13-Dec-l 8 521 ND ND ND 2.50 40.9
20-Mar-19 507 ND ND ND 2.67 39.9
19-Jun-19 537 ND ND ND 2.56 39.4
. 12-Sep-19 549 ND ND ND 2.55 38.0
18-Dec-l 9 630 ND ND ND 2.58 44.8
l 8-Mar-20 652 ND ND ND 3.1 41.0
12-Jun-20 686 ND ND ND 3.18 42.2
l 9-Sep-20 621 ND ND ND 2.9 39.9
1 l-Nov-20 671 ND ND ND 3.27 40.8
24-Mar-21 577 ND ND ND 3.09 44.3
17-Jun-21 543 ND ND ND 3.59 40.0
23-Sep-21 602 ND ND ND 3.29 40.1
9-Dec-21 625 ND ND ND 2.39 38.7
23-Mar-22 624 ND ND ND 3.1 39.1
22-Jun-22 398 ND ND ND 2.9 41.5
15-Sep-22 591 ND ND ND 2.80 41.8
9-Dec-22 588 ND ND ND 2.69 41.3
29-Mar-23 467 ND ND ND 2.74 41.3
2 l-Jun-23 490 ND ND ND 2.65 42.2
0
.... 0 0
N 0
0
Jun-13 •
Aug-13
Oct-13
Dec-13
Feb-14
Apr-14
Jun-14
Aug-14
Oct-14
Dec-14
Feb-15
Apr-15
Jun-15
Aug-15
Oct-15
Dec-15
Feb-16
Apr-16
Jun-16
Aug-16
Oct-16
Dec-16
Feb-17
Apr-17
Jun-17
Aug-17
Oct-17 ..
Dec-17
Feb-18
Apr-18
Jun-18
Aug-18
Oct-18
Dec-18
Feb-19
Apr-19
Jun-19
Aug-19
Oct-19
Dec-19
Feb-20
Apr-20
Jun-20
Aug-20
Oct-20
Dec-20
Feb-21
Apr-21
Jun-21
Aug-21
Oct-21
Dec-21
Feb-22
Apr-22
Jun-22
Aug-22
Oct-22
Dec-22
Feb-23
Apr-23
Jun-23
w 0 0
(ug/1)
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Chloroform Carbon Chloromethane Methylene Nitrate Chloride TW4-30 (ug/1) Tetrachloride (ug/1) Chloride (mg/I) (mg/I) (ue/1) (ul!/1)
l 9-Jun-13 ND ND ND ND 0.948 36
29-Aug-13 ND ND ND ND 0.952 36.3
7-Nov-13 ND ND ND ND 1.24 35.9
23-Jan-I 4 ND ND ND ND 1.36 36
21-May-14 ND ND ND ND 1.44 31.99
13-Aug-14 ND ND ND ND 1.5 38
23-Oct-14 ND ND ND ND 1.84 37.1
l l-Mar-15 1.65 ND ND ND 2.15 38.3
10-Jun-15 2.25 ND ND ND 1.75 40.3
3-Sep-15 · 3.27 ND ND ND 1.75 44.2
28-Oct-l 5 3.48 ND ND ND 1.86 37.8
l 7-Mar-16 5.16 ND ND ND 2.74 39.6
26-May-16 7.38 ND ND ND 2.04 40.2
3-Aug-16 6.79 ND ND ND 2.32 38.6
20-Oct-16 8.69 ND ND ND 2.51 41.3
15-Mar-17 13.6 ND ND ND 2.7 37.7
15-Jun-17 15.2 ND ND ND 2.95 37.8
3-Aug-17 15.7 ND ND ND 3.11 39.8
1 0-Oct-17 13.4 ND ND ND 2.58 34.9
15-Mar-18 16.4 ND ND ND 3.63 41.0
13-Jun-18 16.9 ND ND ND 3.93 37.4
30-Aug-18 19.8 ND ND ND 3.79 44.1
12-Dec-18 23.9 ND ND ND 3.70 35.5
16-Mar-19 25.3 ND ND ND 4.08 35.9
13-Jun-19 31.5 ND ND ND 4.13 27.2
1 l-Sep-19 34.8 ND ND ND 3.62 34.5
18-Dec-19 44.9 ND ND ND 3.62 39.1
17-Mar-20 53.1 ND ND ND 3.85 37.5
12-Jun-20 65.4 ND ND ND 3.69 38.6
I 8-Sep-20 67.7 ND ND ND 3.49 35.0
l l-Nov-20 82.8 ND ND ND 3.64 37.1
l 8-Mar-21 74.8 ND ND ND 3.54 37.6
17-Jun-21 78.7 ND ND ND 4.19 38.3
22-Sep-21 78.2 ND ND ND 2.60 23.5
8-Dec-21 81.2 ND ND ND 3.14 37.9
23-Mar-22 73.6 ND ND ND 3.0 35.1
22-Jun-22 70.8 ND ND ND 2.80 41.3
14-Sep-22 69.8 ND ND ND 2.61 30.5
9-Dec-22 60.5 ND ND ND 2.67 36.5
29-Mar-23 45.5 ND ND ND 2.84 36:6
21-Jun-23 47.0 ND ND ND 3.02 36.8
0
0
Jun-13
Oct-13
Feb-14
Jun-14
Oct-14
Feb-15
Jun-15
Oct-15
Feb-16
Jun-16
Oct-16
Feb-17
Jun-17
Oct-17
Feb-18
Jun-18
Oct-18
Feb-19
Jun-19
Oct-19
Feb-20
Jun-20
Oct-20
Feb-21
Jun-21
Oct-21
Feb-22
Jun-22
Oct-22
Feb-23
Jun-23
_.
0
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Chloroform Carbon ChJoromethane Methylene Nitrate Chloride TW4-31 (ug/1) Tetrachloride (ug/1) Chloride (mg/I) (mg/I) (u!!/1) (u!!/1)
19-Jun-13 ND ND ND ND 1.26 28.4
5-Sep-13 ND ND ND ND 1.1 29.4
7-Nov-13 ND ND ND ND 1.33 28
23-Jan-14 ND ND ND ND 1.32 28.5
21-May-14 ND ND ND ND 1.22 26.3
13-Aug-14 ND ND ND ND I.I 30
28-Oct-14 ND ND ND ND 1.23 30
ll-Mar-15 ND ND ND ND 1.33 30.6
1 0-Jun-15 ND ND ND ND 1. 19 31.1
2-Sep-15 ND ND ND ND 0.916 30.4
21-Oct-15 ND ND ND ND 0.953 29.1
16-Mar-16 ND ND ND ND 1.84 31.5
25-May-16 ND ND ND ND 1.36 32.5
28-Jul-16 ND ND ND ND 1.41 30.6
20-Oct-16 ND ND ND ND 1.14 34.0
15-Mar-17 ND ND ND ND 1.19 31.3
l 5-Jun-17 ND ND ND ND 1.21 33.4
2-Aug-17 ND ND ND ND 1.11 33.0
1 0-Oct-17 ND ND ND ND 1.04 30.9
14-Mar-18 ND ND ND ND 0.916 38.8
12-Jun-18 ND ND ND ND 0.948 34.4
29-Aug-18 ND ND ND ND 0.710 40.3
12-Dec-18 ND ND ND ND 0.766 35.2
16-Mar-19 ND ND ND ND 0.754 35.0
13-Jun-19 ND ND ND ND 0.713 36.9
11-Sep-19 ND ND ND ND 0.610 35.8
14-Dec-19 ND ND ND ND 0.583 40.6
17-Mar-20 ND ND ND ND 0.572 38.2
l 1-Jun-20 ND ND ND ND 0.569 36.7
l 7-Sep-20 ND ND ND ND 0.507 36.5
4-Nov-20 ND ND ND ND 0.501 36.4
17-Mar-21 ND ND ND ND 0.501 40.3
16-Jun-21 ND ND ND ND 0.451 37.9
15-Sep-21 ND ND ND ND 0.461 31.2
8-Dec-21 ND ND ND ND 0.339 40.3
16-Mar-22 ND ND ND ND 0.4 34.8
16-Jun-22 ND ND ND ND 0.41 35.5
13-Sep-22 ND ND ND ND 0.396 40.0
7-Dec-22 ND ND ND ND 0.410 31.8
23-Mar-23 ND ND ND ND 0.391 35.9
15-Jun-23 ND ND ND ND 0.444 43.1
Jun-13
Sep-13
Dec-13
Mar-14
Jun-14
Sep-14
Dec-14
Mar-15
Jun-15
Sep-15
Dec-15
Mar-16
Jun-16
Sep-16
Dec-16
Mar-17
Jun-17
Sep-17
Dec-17
Mar-18
Jun-18
Sep-18
Dec-18
Mar-19
Jun-19
Sep-19
Dec-19
Mar-20
Jun-20
Sep-20
Dec-20
Mar-21
Jun-21
Sep-21
Dec-21
Mar-22
Jun-22
Sep-22
Dec-22
Mar-23
Jun-23
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Chloroform Carbon Chloromethane Methylene Nitrate Chloride TW4-32 Tetrachloride (ug/1) (u2!/I) (ug/1) Chloride (ug/1) (mg/I) (mg/I)
14-Nov-13 ND ND ND ND 4.26 52.1
22-Jan-14 ND ND ND ND 5.11 54.5
21-May-14 ND ND ND ND 5.63 54.9
13-Aug-14 ND ND ND ND 4.2 64
23-Oct-l 4 ND ND ND ND 2.14 62.6
I I-Mar-15 ND ND ND ND 2.46 64.2
I0-Jun-15 ND ND ND ND 1.21 62.7
2-Sep-15 ND ND ND ND 5.09 59.6
2 I-Oct-15 ND ND ND ND 1.19 55.1
I 5-Mar-16 ND ND ND ND 4.48 64.2
25-May-16 ND ND ND ND 3.16 71.8
28-Jul-16 ND ND ND ND 3.44 64.4
I 9-Oct-16 ND ND ND ND 2.87 66.0
14-Mar-l 7 ND ND ND ND 2.82 62.8
15-Jun-l 7 ND ND ND ND 2.37 53.5
2-Aug-17 ND ND ND ND 2.47 65.8
I 0-Oct-17 ND ND ND ND 2.54 58.3
14-Mar-18 ND ND ND ND 2.94 65.4
12-Jun-18 ND ND ND ND 2.51 59.2
29-Aug-l 8 ND ND ND ND 2.56 68.1
30-Nov-18 ND ND ND ND 2.50 57.5
16-Mar-19 ND ND ND ND 2.15 57.5
13-Jun-19 ND ND ND ND 2.18 60.1
I 1-Sep-19 ND ND ND ND 1.84 55.0
14-Dec-19 ND ND ND ND 1.89 64.7
l 7-Mar-20 ND ND ND ND 1.97 59.7
I 0-Jun-20 ND ND ND ND 2.19 57.0
I 7-Sep-20 ND ND ND ND 1.58 50.8
4-Nov-20 ND ND ND ND 1.74 53.7
17-Mar-21 ND ND ND ND 1.80 60.5
15-Jun-21 ND ND ND ND 2.31 40.4
15-Sep-21 ND ND ND ND 1.57 46.1
7-Dec-21 ND ND ND ND 1.34 55.0
16-Mar-22 ND ND ND ND 1.8 48.0
15-Jun-22 ND ND ND ND 1.2 49.4
13-Sep-22 ND ND ND ND 1.59 51.8
7-Dec-22 ND ND ND ND 1.68 48.4
23-Mar-23 ND ND ND ND 1.53 43.6
15-Jun-23 ND ND ND ND 1.77 49.3
Nov-13
Feb-14
May-14
Aug-14
Nov-14
Feb-15
May-15
Aug-15
Nov-15
Feb-16
May-16
Aug-16
Nov-16
Feb-17
May-17
Aug-17
Nov-17
Feb-18
May-18
Aug-18
Nov-18
Feb-19
May-19
Aug-19
Nov-19
Feb-20
May-20
Aug-20
Nov-20
Feb-21
May-21
Aug-21
Nov-21
Feb-22
May-22
Aug-22
Nov-22
Feb-23
May-23
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Chloroform Carbon Chloromethane Methylene Nitrate Chloride TW4-33 Tetrachloride (ug/1) (ue/1) (ug/1) Chloride (ug/1) (mg/I) (mg/I)
14-Nov-13 126 ND ND ND 1.82 47.2
30-Jan-14 124 ND ND ND 2.56 43.5
22-May-14 121 ND ND ND 1.63 46.8
27-Aug-14 104 ND ND ND 1.5 43
29-Oct-14 124 ND ND ND 2.22 44.2
12-Mar-15 134 ND ND ND 1.91 44.2
11-Jun-15 127 ·ND ND ND 1.62 46.4
3-Sep-15 123 ND ND ND I.64 53.4
29-Oct-15 129 ND ND ND I.92 44.5
l 7-Mar-16 122 ND ND ND 2.13 46.2
8-Jun-l 6 96 ND ND ND 2.06 49.7
4-Aug-16 121 ND ND ND 2.32 48.5
26-Oct-16 109 ND ND ND 2.36 52.4
16-Mar-l 7 91 ND ND ND 2.11 49.0
20-Jun-l 7 103 ND ND ND 2.34 49.2
3-Aug-17 127 ND ND ND 2.04 46.9
l l-Oct-17 97.1 ND ND ND 2.09 42.5
15-Mar-18 128 ND ND ND 1.94 49.2
13-Jun-18 88 ND ND ND 2.13 44.0
5-Sep-18 Il3 ND ND ND 1.82 50.0
13-Dec-l 8 I41 ND ND ND 2.01 43.2
20-Mar-19 86.2 ND ND ND 2.00 47.2
l 9-Jun-19 121 ND ND ND 2.16 43.4
12-Sep-l 9 101 ND ND ND 1.61 41.1
l 8-Dec-19 117 ND ND ND 1.86 48.8
18-Mar-20 94 ND ND ND 2.44 45.3
12-Jun-20 90 ND ND ND 3.26 48.9
I 8-Sep-20 85 ND ND ND 3.58 51.0
l l-Nov-20 80.6 ND ND ND 3.71 51.5
18-Mar-21 64.9 ND ND ND 4.62 55.6
17-Jun-21 63.9 ND ND ND 6.25 54.7
22-Sep-21 60.2 ND ND ND 4.33 42.5
8-Dec-21 68.9 ND ND ND 4.65 53.8
23-Mar-22 53.1 ND ND ND 3.8 51.4
22-Jun-22 58.7 ND ND ND 3.7 56.7
14-Sep-22 53.9 ND ND ND 3.90 42.2
9-Dec-22 50.5 ND ND ND 3.52 45.1
29-Mar-23 47.7 ND ND ND 3.93 52.6
21-Jun-23 51.8 ND ND ND 4.24 52.9
0
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Feb-14
May-14 _,
Aug-14
Nov-14
Feb-15
May-15
Aug-15
Nov-15
Feb-16
May-16
Aug-16
Nov-16
Feb-17
May-17
Aug-17
Nov-17
Feb-18
May-18
Aug-18
Nov-18
Feb-19
May-19
Aug-19
Nov-19
Feb-20
May-20
Aug-20
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May-21
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Nov-21
Feb-22
May-22
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Chloroform Carbon Chloromethane Methylene Nitrate Chloride TW4-34 (ug/1) Tetrachloride (ug/1) Chloride (mg/I) (mg/I) (ut?II) (ut?II)
14-Nov-13 ND ND ND ND 1.64 19.2
23-Jan-14 ND ND ND ND 1.94 20.4
21-May-14 ND ND ND ND 1.69 17.9
13-Aug-14 ND ND ND ND I.I 18
28-Oct-14 ND ND ND ND 1.16 17.5
11-Mar-15 ND ND ND ND 1.21 17.7
1 0-Jun-15 ND ND ND ND 0.868 17.4
3-Sep-15 ND ND ND ND 0.458 15. I
2 l-Oct-15 ND ND ND ND 0.368 I 5.8
16-Mar-16 ND ND ND ND 0.925 17.3
26-May-16 ND ND ND ND 0.605 18
26-May-16 ND ND ND ND 0.605 18
3-Aug-16 ND ND ND ND 0.726 17.2
20-Oct-16 ND ND ND ND 0.612 19.0
15-Mar-l 7 ND ND ND ND 0.674 18.0
15-Jun-17 ND ND ND ND 0.727 15.7
2-Aug-17 ND ND ND ND 0.733 19.8
1 0-Oct-17 ND ND ND ND 0.774 18.5
14-Mar-18 ND ND ND ND 0.737 19.1
13-Jun-18 ND ND ND ND 0.877 19.5
29-Aug-18 ND ND ND ND 0.736 23.8
12-Dec-18 ND ND ND ND 0.889 18.5
16-Mar-19 ND ND ND ND 0.859 17.9
13-Jun-l 9 ND ND ND ND 0.994 20.l
1 l-Sep-19 ND ND ND ND 0.934 17.8
14-Dec-19 ND ND ND ND 1.07 21.4
l 7-Mar-20 ND ND ND ND 1.09 20.1
l l-Jun-20 ND ND ND ND 1.24 20.9
l 7-Sep-20 ND ND ND ND 0.978 19.0
4-Nov-20 ND ND ND ND 1.04 18.7
l 7-Mar-21 ND ND ND ND 10.9 19.3
16-Jun-21 ND ND ND ND 1.08 17.8
l 5-Sep-21 ND ND ND ND I.I 15.0
8-Dec-21 ND ND ND ND 1.02 19.6
16-Mar-22 ND ND ND ND 1.0 17.3
16-Jun-22 ND ND ND ND 1.0 19.5
14-Sep-22 I.2 ND ND ND 0.788 18.8
8-Dec-22 ND ND ND ND 1.16 17.0
29-Mar-23 I.2 ND ND ND 1.07 20.7
20-Jun-23 1.2 ND ND ND I.09 21.2
Nov-13
Feb-14
May-14
Aug-14
Nov-14
Feb-15
May-15
Aug-15
Nov-15
Feb-16
May-16
Aug-16
Nov-16
Feb-17
May-17
Aug-17
Nov-17
Feb-18
May-18
Aug-18
Nov-18
Feb-19
May-19
Aug-19
Nov-19
Feb-20
May-20
Aug-20
Nov-20
Feb-21
May-21
Aug-21
Nov-21
Feb-22
May-22
Aug-22
Nov-22
Feb-23
May-23
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Chloroform Carbon Chloromethane Methylene Nitrate Chloride TW4-35 (ug/1) Tetrachloride (ug/1) Chloride (mg/I) (mg/I) (ue/1) (u2'1)
27-Aug-14 ND ND ND ND 0.2 34
28-Oct-14 ND ND ND ND 0.351 34.1
11-Mar-15 ND ND ND ND 0.436 34.9
1 0-Jun-15 ND ND ND ND 0.452 35.2
3-Sep-15 ND ND ND ND 0.304 35.9
28-Oct-l 5 ND ND ND ND 0.419 33.4
16-Mar-16 ND ND ND ND 0.521 35.4
26-May-16 ND ND ND ND 0.631 35.4
3-Aug-16 ND ND ND ND 0.723 34.8
20-Oct-16 ND ND ND ND 0.626 37.1
15-Mar-17 ND ND ND ND 0.673 33.7
15-Jun-17 ND ND ND ND 0.699 34.8
2-Aug-17 ND ND ND ND 0.670 36.3
1 0-Oct-17 ND ND ND ND 0.651 31.7
14-Mar-l 8 ND ND ND ND 0.740 37.4
13-Jun-18 ND ND ND ND 0.662 33.7
30-Aug-18 ND ND ND ND 0.527 39.3
12-Dec-l 8 ND ND ND ND 0.559 43.0
16-Mar-19 ND ND ND ND 0.574 33.5
13-Jun-19 ND ND ND ND 0.670 35.5
ll-Sep-19 ND ND ND ND 0.525 31.7
14-Dec-l 9 ND ND ND ND 0.524 37.4
l 7-Mar-20 ND ND ND ND 0.595 34.5
l l-Jun-20 ND ND ND ND 0.699 34.0
17-Sep-20 ND ND ND ND 0.760 32.2
4-Nov-20 ND ND ND ND 0.756 30.4
17-Mar-21 ND ND ND ND 0.991 35.6
16-Jun-21 ND ND ND ND 1.01 34.1
15-Sep-21 ND ND ND ND 1.20 27.5
8-Dec-21 ND ND ND ND 1.23 34.3
22-Mar-22 ND ND ND ND 1.5 27.8
16-Jun-22 ND ND ND ND 1.6 31.2
14-Sep-22 ND ND ND ND 1.61 34.4
7-Dec-22 ND ND ND ND 1.79 27.4
29-Mar-23 ND ND ND ND 1.74 33.8
20-Jun-23 ND ND ND ND 1.91 29.8
Aug-14
Nov-1
Feb-1
May-15
Aug-15
Nov-15
Feb-16
May-16
Aug-16
Nov-16
Feb-17
May-17
Aug-17
Nov-17
Feb-18
May-18
Aug-18
Nov-18
Feb-19
May-19
Aug-19
Nov-19
Feb-20
May-20
Aug-20
Nov-20
Feb-21
May-21
Aug-21
Nov-21
Feb-22
May-22
Aug-22
Nov-22
Feb-23
May-23
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Chloroform Carbon Chloromethane Methylene Nitrate Chloride TW4-36 (ug/1) Tetrachloride (ug/1) Chloride (mg/I) (mg/I) (uw.I) (ue/1)
27-Aug-14 ND ND ND ND ND 65
23-Oct-14 ND ND ND ND ND 67.3
l l-Mar-15 ND ND ND ND ND 67.2
10-Jun-15 ND ND ND ND ND 69.3
3-Sep-15 ND ND ND ND ND 76.4
21-Oct-15 ND ND ND ND ND 64.5
16-Mar-16 ND ND ND ND ND 67.1
25-May-16 ND ND ND ND ND 72.3
27-Jul-16 ND ND ND ND ND 69.4
20-Oct-16 ND ND ND ND ND 73.8
15-Mar-17 ND ND ND ND ND 60.2
15-Jun-l 7 ND ND ND ND ND 71.3
2-Aug-17 ND ND ND ND ND 69.6
1 0-Oct-17 ND ND ND ND 0.104 62.9
14-Mar-18 ND ND ND ND ND 73.8
12-Jun-18 ND ND ND ND ND 64.3
29-Aug-18 ND ND ND ND ND 76.4
12-Dec-18 ND ND ND ND 0.123 65.8
16-Mar-19 ND ND ND ND 0.116 65.0 -
13-Jun-19 ND ND ND ND ND 71.5
11-Sep-19 ND ND ND ND ND 69.6
14-Dec-19 ND ND ND ND ND 73.7
l 7-Mar-20 ND ND ND ND ND 69.1
l 1-Jun-20 ND ND ND ND ND 67.0
. l 7-Sep-20 ND ND ND ND ND 66.0
4-Nov-20 ND ND ND ND ND 64.0
l 7-Mar-21 ND ND ND ND ND 72.5
16-Jun-21 ND ND ND ND ND 68.7
15-Sep-21 ND ND ND ND ND 63.1
8-Dec-21 ND ND ND ND ND 69.9
16-Mar-22 ND ND ND ND 0.1 61.2
15-Jun-22 ND ND ND ND ND 68.8
13-Sep-22 ND ND ND ND ND 69.3
7-Dec-22 ND ND ND ND 0.100 59.7
23-Mar-23 ND ND ND ND 0.102 60.7
l 5-Jun-23 ND ND ND ND ND 68.9
Aug-14
Nov-14
Feb-15
May-15
Aug-15
Nov-15
Feb-16
May-16
Aug-16
Nov-16
Feb-17
May-17
Aug-17
Nov-17
Feb-18
May-18
Aug-18
Nov-18
Feb-19
May-19
Aug-19
Nov-19
Feb-20
May-20
Aug-20
Nov-20
Feb-21
May-21
Aug-21
Nov-21
Feb-22
May-22
Aug-22
Nov-22
Feb-23
May-23
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Chloroform Carbon Chloromethane Methylene Nitrate Chloride TW4-37 (ug/1) Tetrachloride (ug/1) Chloride (mg/I) (mg/I) (ue/1) (uf!/1)
8-Jun-15 30200 18 16 2 35 345
3 l-Aug-15 19100 17 14 1.04 32 374
19-Oct-l 5 19500 13 9 1.17 35 399
9-Mar-16 17500 16 4 1.34 28.4 332
23-May-16 16200 14 ND 1.17 27.9 389
25-Jul-16 15900 17 ND ND 33.4 294
l 2-Oct-16 16400 16 ND ND 26.1 304
8-Mar-17 18000 15 ND ND 32.3 305
13-Jun-17 15800 16 ND ND 31.2 281
26-Jul-l 7 15000 15.1 ND ND 30.5 277
l l-Oct-17 15500 12.6 2.47 ND 30.6 255
12-Mar-18 12900 12.8 1.14 ND 30.0 263
8-Jun-18 14400 10.6 ND ND 28.6 275
22-Aug-18 14100 12.1 6.20 ND 25.4 387
28-Nov-18 15200 11.3 19.8 ND 27.3 264
8-Mar-19 13300 13.8 1.2 ND 30.1 209
5-Jun-19 16200 14.6 ND ND 31.2 250
4-Sep-19 11900 10.7 1.90 ND 25.8 228
10-Dec-l 9 13100 8.8 3.12 ND 25.5 220
19-Feb-20 12000 8.5 12.30 ND 28.3 236
27-May-20 11700 11.8 1.44 ND 28.3 321
4-Sep-20 13800 9.6 ND ND 29.5 273
28-Oct-20 10300 6.5 29.40 ND 28.7 254
23-Feb-21 9380 ND ND ND 26.9 242
9-Jun-21 13000 8.46 1.98 ND 26.6 176
24-Aug-21 10200 7.65 ND ND 25.8 220
l-Dec-21 14800 11.50 6.70 5.05 31.3 410
9-Mar-22 13700 12.20 ND ND 29.8 414
8-Jun-22 46800 8.2 12.0 ND 28 267
30-Aug-22 11600 5.4 2.4 ND 26.6 243
30-Nov-22 9640 5.7 ND ND 30.9 578
7-Mar-23 8010 ND ND ND 19.1 209
13-Jun-23 8160 1.6 5.7 ND 35.9 329
Jun-15
Sep-15
Dec-15
Mar-16
Jun-16
Sep-16
Dec-16
Mar-17
Jun-17
Sep-17
Dec-17
Mar-18
Jun-18
Sep-18
Dec-18
Mar-19
Jun-19
Sep-19
Dec-19
Mar-20
Jun-20
Sep-20
Dec-20
Mar-21
Jun-21
Sep-21
Dec-21
Mar-22
Jun-22
Sep-22
Dec-22
Mar-23
Jun-23
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Chloroform Carbon Chloromethane Methylene Nitrate Chloride TW4-38 (ug/1) Tetrachloride (ug/1) Chloride (mg/I) (mg/I) (u2/l) (m1/l)
10-Nov-16 ND ND ND ND 11.2 40.0
15-Mar-l 7 ND ND ND ND 10.6 35.7
15-Jun-l 7 ND ND ND ·ND 10.8 36.2
2-Aug-17 ND ND ND ND 10.1 36.9
1 0-Oct-17 ND ND ND ND 10.3 31.3
14-Mar-I8 ND ND ND ND 9.34 36.5
13-Jun-18 ND ND ND ND 9.48 33.1
30-Aug-18 ND ND ND ND 7.77 39.2
12-Dec-l 8 ND ND ND ND 8.48 35.0
16-Mar-19 ND ND ND ND 8.96 33.5
13-Jun-19 ND ND ND ND 8.53 33.7
ll-Sep-19 ND ND ND ND 7.61 31.6
14-Dec-19 ND ND ND ND 7.51 36.0
l 7-Mar-20 ND ND ND ND 8.11 33.4
l l-Jun-20 ND ND ND ND 9.00 34.9
'
18-Sep-20 ND ND ND ND 7.35 34.7
4-Nov-20 ND ND ND ND 7.72 35.1
18-Mar-21 ND ND ND ND 8.24 37.2
16-Jun-21 ND ND ND ND 9.59 37.7
15-Sep-2 l ND ND ND ND 8.04 32.1
8-Dec-21 ND ND ND ND 8.02 35.8
22-Mar-22 ND ND ND ND 7.7 32.7
16-Jun-22 ND ND ND ND 7.9 37.3
14-Sep-22 ND ND ND ND 7.57 32.9
7-Dec-22 ND ND ND ND 8.90 36.4
29-Mar-23 ND ND ND ND 8.78 37.2
20-Jun-23 ND ND ND ND 8.20 36.3
(ug/L)
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Feb-21 -· t May-21 -
t Aug-21 -
Nov-21 !
Feb-22 -
May-22
t
Aug-22
Nov-22 !
Feb-23
May-23
Chloroform Carbon Chloromethane Methylene Nitrate Chloride TW4-39 (ug/1) Tetrachloride (ug/1) Chloride (mg/I) (mg/I) (02/1) (ul!ll)
10-Nov-16 2800 ND ND ND 20.7 68.9
8-Mar-1 7 6460 8.15 ND 1.35 6.44 130
13-Jun-17 5560 8.20 ND 1.31 6.25 120
26-Jul-17 10000 14.40 ND 1.50 7.74 132
l l-Oct-17 552 ND ND ND 2.65 73.5
12-Mar-18 2870 3.10 ND ND 3.33 118
8-Jun-18 7160 7.94 ND ND 4.84 107
22-Aug-18 8180 12.50 2.33 ND 6.05 110
28-Nov-18 6520 6.08 ND ND 6.39 123
8-Mar-19 885 1.20 ND ND 2.08 49.0
5-Jun-19 8640 11.60 ND ND 8.45 114.0
4-Sep-19 4240 5.71 ND ND 1.75 48.2
1 0-Dec-19 1650 1.14 ND ND 0.948 74.7
19-Feb-20 812 ND ND ND 0.792 76.5
27-May-20 5870 7.56 ND ND 5.01 88.5
4-Sep-20 5960 8.18 ND ND 2.69 63.2
28-Oct-20 648 ND 1.19 ND 7.03 83.2
23-F eb-21 2970 ND ND ND 2.12 53.0
9-Jun-21 2490 2.92 ND ND 12.0 123.0
24-Aug-21 858 ND ND ND 2.70 78.7
l-Dec-21 776 ND ND ND 2.33 82.4
9-Mar-22 724 ND ND ND 2.9 75.2
8-Jun-22 982 ND 1.4 ND 9.0 76.8
30-Aug-22 843 ND ND ND 3.72 85.2
30-Nov-22 1720 1.20 ND ND 7.86 80.6
7-Mar-23 1850 ND ND ND 1.37 38.7
13-Jun-23 3330 1.8 3.1 ND 7.96 75.4
0
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Nov-16 +-----+-......,=---¼-------4--------+------l--------1
Feb-17
May-17
Aug-17
Nov-17
Feb-18
May-18
Aug-18
Nov-18
Feb-19 -
May-19 -
Aug-19 -
Nov-19 -
Feb-20
May-20
Aug-20
Nov-20
Feb-21
May-21 •
Aug-21 ··
Nov-21 -
Feb-22
May-22
Aug-22
Nov-22
Feb-23
May-23 ._ _ _._ _ ___,__ _____ __._ ____ ....__ ___ ___._ ____ ..__ ___ ~
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Chloroform Carbon Chloromethane Methylene Nitrate Chloride TW4-40 (ug/1) Tetrachloride (ug/1) Chloride (mg/I) (mg/I) (uv/1) (uv/1)
21-Mar-18 248 ND ND ND 3.08 35.7
14-Jun-18 131 ND ND ND 3.33 31.6
5-Sep-18 116 ND ND ND 3.22 37.6
13-Dec-18 118 ND ND ND 3.54 29.9
20-Mar-19 111 ND ND ND 3.18 30.9
5-Jun-19 263 ND ND ND 3.55 35.6
4-Sep-19 380 ND ND ND 3.39 35.9
10-Dec-19 314 ND ND ND 2.89 36.7
19-Feb-20 364 ND ND ND 2.98 38.5
27-May-20 367 ND ND ND 2.91 36.5
4-Sep-20 333 ND ND ND 2.88 34.2
28-Oct-20 264 ND ND ND 2.58 34.6
23-Feb-21 436 ND 3.51 ND 2.43 36.0
9-Jun-21 343 ND ND ND 3.77 27.5
24-Aug-21 301 ND 1.32 ND 1.50 31.8
l-Dec-21 286 ND ND ND 2.60 38.4
9-Mar-22 238 ND ND ND 2.5 38.4
8-Jun-22 323 ND ND ND 1.9 36.6
30-Aug-22 302 ND ND ND 2.22 39.3
30-Nov-22 298 ND ND ND 2.24 44.8
7-Mar-23 259 ND ND ND 1.28 23.5
13-Jun-23 220 ND 1.3 ND 2.04 37.6
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Chloroform Carbon Chloromethane Methylene Chloride TW4-41 (ug/1) Tetrachloride (ug/1) Chloride Nitrate (mg/I) (mg/I) (u2/I) (u2/I)
9-May-18 1400 ND ND ND 6.54 42.8
22-Aug-l 8 1390 ND ND ND 6.13 45.5
28-Nov-18 1320 ND ND ND 6.02 41.4
8-Mar-19 1220 ND ND ND 6.71 39.1
5-Jun-19 1320 ND ND ND 6.00 38.9
4-Sep-19 1190 ND ND ND 6.22 39.4
1 0-Dec-19 1410 ND ND ND 6.1 I 42.1
19-Feb-20 1200 ND ND ND 6.12 44.4
27-May-20 1220 ND ND ND 6.78 41.7
4-Sep-20 1110 ND ND ND 6.69 40.2
28-Oct-20 1020 ND ND ND 6.25 39.7
23-Feb-21 1170 ND ND ND 6.41 40.6
9-Jun-21 1130 ND ND ND 7.45 39.3
24-Aug-21 1100 ND ND ND 3.77 37.1
1-Dec-21 1030 ND ND ND 6.72 43.2
9-Mar-22 1030 ND ND ND 6.2 37.3
8-Jun-22 1010 ND ND ND 6.0 41.1
30-Aug-22 1060 ND ND ND 5.92 41.9
30-Nov-22 1050 ND ND ND 6.00 38.0
7-Mar-23 985 ND ND ND 4.30 34.4
13-Jun-23 1040 ND 1.8 ND 6.27 40.3
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Chloroform Carbon Chloromethane Methylene Nitrate Chloride TW4-42 (ug/1) Tetrachloride (ug/1) Chloride (mg/I) (mg/I) (ue/1) (Jie/1)
19-Jun-19 ND ND ND ND 2.57 23.3
1 l-Sep-19 ND ND ND ND 2.75 20.6
12-Dec-19 ND ND ND ND 2.82 22.6
17-Mar-20 ND ND ND ND 2.88 23.2
1 0-Jun-20 ND ND ND ND 3.23 23.1
l 7-Sep-20 ND ND ND ND 3.65 23.5
4-Nov-20 ND ND ND ND 2.77 22.4
17-Mar-21 ND ND ND ND 3.15 24.2
15-Jun-21 ND ND ND ND 3.57 24.6
l 5-Sep-21 ND ND ND ND 3.26 16.6
7-Dec-21 ND ND ND ND 2.02 24.2
15-Mar-22 ND ND ND ND 2.5 21.5
15-Jun-22 ND ND ND ND 3.3 24.0
30-Aug-22 ND ND ND ND 3.03 22.8
7-Dec-22 ND ND ND ND 3.30 15.6
22-Mar-23 ND ND ND ND 2.78 21.1
l 5-Jun-23 ND ND ND ND 3.14 20.9
0 0 0 0
27-Oct-18 ' '
15-May-19
0
0
1-Dec-19 -►
•
18-Jun-20 0
•
0
4-Jan-21 .
◄►
0
23-Jul-21 -
0
0
8-Feb-22 -
0
0
27-Aug-22 ◄►
◄•
15-Mar-23 ◄•
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1-Oct-23
(ug/L)
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9-Dec-21 ND ND ND ND 0.118 40.6
16-Mar-22 ND ND ND ND 0.4 39.2
16-Jun-22 ND ND ND ND 0.24 41.8
13-Sep-22 ND ND ND ND 0.383 43.1
7-Dec-22 ND ND ND ND 0.383 40.7
23-Mar-23 ND ND ND ND 0.384 28.0
15-Jun-23 ND ND ND ND 0.432 41.7
0 0 0
1-Jan-21
11-Apr-21
20-Jul-21
28-Oct-21 -
◄►
5-Feb-22
◄
16-May-22
◄►
24-Aug-22
◄►
2-Dec-22 ◄
12-Mar-23
◄
20-Jun-23 ◄
28-Sep-23
(ug/L)
0 0 .... ....
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t/1
TabL
Contour Map Based Chloroform Plume Mass Calculations and Data over Time
£
QI ... "' E +' Ill U.I
Ill Ill "' :iE
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0 ... 0 ::c u
iii :,
-0 'iii QI a:
2400
2200
2000
1800
1600
1400
1200
1000
800
600
400
200
0
~~####~~~~#~~~#~~~~~~~~~~~~~~~~~ ~ ~ ~ 0 ~ ~ ~~0~~~~~~ 0~~~~~~ 0~~~~~~~0~~~~ ~~0~~~~~~~0~~~~~~~0~
~ mass estimate
--Linear (mass estimate)
HYDRO
GEO
CHEM,INC.
TIME SERIES OF RESIDUAL CHLOROFORM MASS
ESTIMATES
Approved I Dale
SJS
Aulhor I Dale
SJS
File Name I Figure
Mas!IESIITlmeSerles )115 L.1
https://hgcinc.sharepoint.com/VOL4/718000/aug23/chloroform/masscalc/FL.1_resid_chl_mass_2Q23.xlsx: FL.1 Resid CHL Mass
TABLE L.1
Chloroform Plume Residual Mass
Since Third Quarter 2015
Residual
Plume Mass
Quarter (lbs)
0315 1712
0415 1869
01 16 1946
0216 2261
0316 1718
0416 1711
01 17 1271
0217 1372
0317 1948
0417 884
01 18 1271
0218 1271
0318 1208
0418 1107
01 19 833
0219 1408
0319 1050
0419 770
01 20 1106
0220 1056
0320 909
0420 715
01 21 1273
02 21 784
03 21 933
04 21 981
01 22 711
0222 1124
0322 850
0422 893
01 23 444
0223 928
Notes:
lbs= pounds
https:/ /hgcinc.sharepoint.com/VOL4/718000/aug23/chloroform/masscalc/FL.1_resid_chl_mass_2Q23.xlsx: Table L.1
CHLOROFORM RESIDUAL MASS ESTIMATE DETAILS:
Chloroform Data File: CHL_Surferlnput_Q2_23.xls
Gridding details:
1) kriging parameters: SURFER™ default parameters (point kriging, linear
variogram, slope= 1, no anisotropy [anisotropy= 1], no search constraints [all data
used])
2) minx, max x (UTME[m]): 631900, 633043
3) min y, may y (UTMN[m]): 4154240, 4155550.64
4) grid spacing in x, y (m): 15.24, 15.24
5) artificial or pseudo-data: none
6) Q4, 2022 (previous quarter) data used at wells: none.
Chloroform residual mass estimate kriged grid files (ascii format):
Ucm2Q23wl.grd: second quarter, 2023 Water Level Grid (ft amsl)
Ucm2Q23bb.grd: second quarter, 2023 Aquifer Base Grid (ft amsl)
Ucm2Q23sat.grd: second quarter, 2023 Saturated Thickness Grid (ft)
Ucm2Q231ogchl.grd: second quarter, 2023 log of chloroform grid (log ofug/L)
Ucm2Q23chl.grd: second quarter, 2023 Chloroform Concentration Grid (ug/L)
Ucm2Q23ge70.grd: second quarter, 2023 Chloroform Concentration GE 70 Grid (ug/L)
Ucm2Q23volm3.grd: second quarter, 2023 Groundwater Volume Grid (m3)
Ucm2Q23masslb.grd: second quarter, 2023 Chloroform Plume Mass Grid (lb)
Chloroform residual mass estimate kriged grid XYZ files (ascii format}:
Ucm2Q23wl.dat: second quarter, 2023 Water Level Grid XYZ file (ft amsl)
Ucm2Q23bb.dat: second quarter, 2023 top of Aquifer Base Grid XYZ file (ft amsl)
Ucm2Q23sat.dat: second quarter, 2023 Saturated Thickness Grid XYZ file (ft)
Ucm2Q231ogchl.dat: second quarter, 2023 log of chloroform grid XYZ file (log of ug/L)
Ucm2Q23chl.dat: second quarter, 2023 Chloroform Concentration Grid XYZ file (ug/L)
Ucm2Q23ge70.dat: second quarter, 2023 Chloroform Concentration GE 70 Grid (ug/L)
XYZ file
Ucm2Q23volm3.dat: second quarter, 2023 Groundwater Volume Grid XYZ file (m3)
Ucm2Q23masslb.dat: second quarter, 2023 Chloroform Plume Mass Grid XYZ file (lb)
Chloroform plume mass estimate file: Ucm2Q23result.xls
TabM
CSV Transmittal Letter
Kathy Weinel
From:
Sent:
To:
Cc:
Subject:
Attachments:
Dear Mr. Goble,
Kathy Weinel
Tuesday, August 8, 2023 7:25 AM
Phillip Goble
'Dean Henderson'; David Frydenlund; Dawn Kolkman; Scott Bakken; Garrin Palmer;
Logan Shumway; Jordan Christine App; [e-mail]
Transmittal of CSV Files White Mesa Mill 2023 Q2 Chloroform Monitoring
23F1372 FINAL EnergyFuels-Client 28 Jun 23 1216.csv; 23F1815 FINAL EnergyFuels-
Client 30 Jun 23 1243.csv; Q2 2023 Chloroform Field Data.csv; Q2 2023 DTW all
programs .csv; 23F1268 FINAL EnergyFuels-Client 28 Jun 23 1205.csv
Attached to this e-mail is an electronic copy of laboratory results for chloroform monitoring conducted at the White
Mesa Mill during the second quarter of 2023, in Comma Separated Value (CSV) format.
Other electronic files required by the Corrective Action Plan are included on the CDs included with the hard copy
reports.
Please contact me at 303-389-4131 if you have any questions on this transmittal.
Yours Truly,
Kathy Weinel
eF Energy Fuels Resources (USA) Inc.
Kathy Weinel
Director. Regulatory Compliance
t:303.389.4134I c: I f:303.389.4125
[e-mail]
225 Union Blvd., Suite 600
Lakewood, CO 80228
http://www.energyfuels.com
This e-mail is intended for the exclusive use of person(s) mentioned as the recipient(s). This message and any attached files with it are confidential and may
contain privileged or proprietary information. If you are not the intended recipient(s) please delete this message and notify the sender. You may not use, distribute
print or copy this message if you are not the intended recipient(s).
1
TabN
Exceedance Notices for the Reporting Period
This attachment has been deliberately left blank.