DRC-2023-001467 - 0901a06881188748

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e:,;�ERGY FUELS
February 6, 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
Re: Transmittal of 4th Quarter 2022 Nitrate Monitoring Report
D'v o f.,'a ' - aq8:---P t a"d RaJ, I a, Co t'o
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Energy Fuels Resources (USA) Inc.
225 Union Blvd. Suite 600 Lakewood, CO, US, 80228 303 974 2140 II 1111. 'll.;;J�I fu9�.CO!ll
Stipulation and Consent Order Docket Number UGW12-04 White Mesa Uranium Mill
Dear Mr. Hansen:
Enclosed are two copies of the White Mesa Uranium Mill Nitrate Monitoring Report for the 4th Quarter of2022 as required by the Stipulation and Consent Order Docket Number UGW12-04, as well as two CDs each containing a word searchable electronic copy of the report.
If you should have any questions regarding this report, please contact me or Jordan App at [phone].
Yours very truly,
ENERGY FUELS RESOURCES (USA) INC. Kathy Weinel Director, Regulatory Compliance
cc: David Frydenlund Logan Shumway Garrin Palmer Scott Bakken Jordan app Dawn Kolkman
DRC-2023-001467
;:-(l~/
1:/'1,r;~ERGYFUELS
February 6, 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
Re: Transmittal of 4th Quarter 2022 Nitrate Monitoring Report
Energy Fuels Resources (USA) Inc.
225 Union Blvd. Suite 600
Lakewood, CO, US, 80228
303 974 2140
, ww.encre., fuels.corn
Stipulation and Consent Order Docket Number UGW12-04 White Mesa Uranium Mill
Dear Mr. Hansen:
Enclosed are two copies of the White Mesa Uranium Mill Nitrate Monitoring Report for the 4th
Quarter of 2022 as required by the Stipulation and Consent Order Docket Number UGW12-04, as well
as two CDs each containing a word searchable electronic copy of the report.
If you should have any questions regarding this report, please contact me or Jordan App at
[phone].
Yours very truly,
ENERGY FUELS RESOURCES (USA) INC.
Kathy Weinel
Director, Regulatory Compliance
cc: David Frydenlund
Logan Shumway
Garrin Palmer
Scott Bakken
Jordan app
Dawn Kolkman
White Mesa Uranium Mill
Nitrate Monitoring Report
State of Utah
Stipulated Consent Agreement, December 2014
Docket No. UGW12-04
4th Quarter
(October through December)
2022
Prepared by:
%S---~t£1' -I ,---,; ,/ ENERGYFUELS
Energy Fuels Resources (USA) Inc.
225 Union Boulevard, Suite 600
Lakewood, CO 80228
February 6, 2023
TABLE OF CONTENTS
1.0 INTRODUCTION ................................................................................................. 1
2.0 GROUNDWATER NITRATE MONITORING ................................................. 1
2.1 Samples and Measurements Taken During the Quarter ...................................... 1
2.1 .1 Nitrate Monitoring ....................................................................................... 2
2.1.2 Parameters Analyzed ................................................................................... 3
2.1.3 Groundwater Head and Level Monitoring ................................................... 3
2.2 Sampling Methodology and Equipment and Decontamination Procedures ....... .4
2.2.1 Well Purging, Sampling and Depth to Groundwater .................................. .4
2.2.2 Piezometer Sampling ................................................................................... 5
2.3 Field Data ............................................................................................................. 5
2.4 Depth to Groundwater Data and Water Table Contour Map ............................... 5
2.5 Laboratory Results ............................................................................................... 5
2.5.1 Copy of Laboratory Results ......................................................................... 5
2.5.2 Regulatory Framework ................................................................................ 6
3.0 QUALITY ASSURANCE AND DATA VALIDATION .................................... 6
3 .1 Field QC Samples ................................................................................................ 6
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 ..................................................................... 7
3 .4.2 Holding. Time Evaluation ............................................................................ 8
3.4.3 Analytical Method Checklist ....................................................................... 8
3.4.4 Reporting Limit Evaluation ......................................................................... 8
3.4.5 QA/QC Evaluation for Sample Duplicates .................................................. 8
3.4.6 Other Laboratory QA/QC ............................................................................ 9
3 .4. 7 Receipt Temperature Evaluation ............................................................... 10
3.4.8 Rinsate Check ............................................................................................ 10
4.0 INTERPRETATION OF DATA ........................................................................ 10
4.1 Interpretation of Groundwater Levels, Gradients and Flow Directions ............ 10
4.1.1 Current Site Groundwater Contour Map ................................................... 10
4.1.2 Comparison of Current Groundwater Contour Map to Groundwater Contour Map
for Previous Quarter .................................................................................. 15
4.1.4 Depth to Groundwater Measured and Groundwater Elevation ................. 16
4.2 Effectiveness of Hydraulic Containment and Capture ...................................... 16
4.2.1 Hydraulic Containment and Control.. ........................................................ 16
4.2.2 Current Nitrate and Chloride Isoconcentration Maps ................................ 20
4.2.3 Comparison of Areal Extent ............................................................................. 20
4.2.4 Nitrate and Chloride Concentration Trend Data and Graphs ................... .22
4.2.5 Interpretation of Analytical Data ............................................................... 22
4.3 Estimation of Pumped Nitrate Mass and Residual Nitrate Mass within the Plume
···························································································································24
5.0 LONG TERM PUMP TEST AT TWN-02, TW4-22, TW4-24, and TW4-25
OPERATIONS REPORT ................................................................................... 26
5 .1 Introduction ........................................................................................................ 26
5.2 Pumping Well Data Collection .......................................................................... 27
5.3
5.4
6.0
6.1
7.0
8.0
9.0
Table 1
Table 2
Table 3
Table 4
Table 5
Table 6
Table 7
Table 8
Table 9
Water Level Measurements ............................................................................... 27
Pumping Rates and Volumes ............................................................................. 28
CORRECTIVE ACTION REPORT .................................................................. 28
Assessment of Previous Quarter's Corrective Actions ...................................... 28
CONCLUSIONS AND RECOMMENDATIONS ............................................ 28
ELECTRONIC DATA FILES AND FORMAT ............................................... 33
SIGNATURE AND CERTIFICATION ............................................................ 34
LIST OF TABLES
Summary of Well Sampling and Constituents for the Period
Nitrate Mass Removal Per Well Per Quarter
Nitrate Well Pumping Rates and Volumes
Quarterly Calculation of Nitrate Mass Removed and Total Volume of Water
Pumped
Nitrate Data over Time for MW-30, MW-31, MW-5, and MW-11
Slug Test Results
Pre-Pumping Saturated Thickness
Pre-Pumping Hydraulic Gradients and Flow Calculations
Recalculated Background Flow
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 Kriged Current Quarter Groundwater Contour Map and Weekly, Monthly and Quarterly
Depth to Water Data
Tab D Kriged Previous Quarter Groundwater Contour Map
Tab E Hydrographs of Groundwater Elevations over Time for Nitrate Monitoring Wells
Tab F Depths to Groundwater and Elevations over Time for Nitrate Monitoring Wells
Tab G Laboratory Analytical Reports
Tab H Quality Assurance and Data Validation Tables
H-1 Field Data QA/QC Evaluation
H-2 Holding Time Evaluation
H-3 Analytical Method Check
H-4 Reporting Limit Evaluation
H-5 QA/QC Evaluation for Sample Duplicates
H-6 QC Control limits for Analysis and Blanks
H-7 Receipt Temperature Evaluation
H-8 Rinsate Evaluation
Tab I Kriged Current Quarter Nitrate and Chloride Isoconcentration Maps
Tab J Analyte Concentration Data Over Time
Tab K Nitrate and Chloride Concentration Trend Graphs
Tab L CSV Transmittal Letter
Tab M Residual Mass Estimate Analysis Figure
111
ACRONYM LIST
CA
CAP
CIR
CTF
DIFB
DWMRC
DRC
EFRI
ft amsl
GWDP
LCS
MS
MSD
QA
QAP
QC
RPD sco
SOPs
UDEQ
voe
Consent Agreement
Corrective Action Plan
Contamination Investigation Report
Chemtech-Ford
Deionized Field Blanks
Utah Division of Waste Management and Radiation Control
Utah Division of Radiation Control
Energy Fuels Resources (USA) Inc.
feet above mean sea level
Groundwater Discharge Permit
Laboratory Control Spike
Matrix Spike
Matrix Spike Duplicate
Quality Assurance
Groundwater Monitoring Quality Assurance Plan
Quality Control
Relative Percent Difference
Stipulated Consent Order
Standard Operating Procedures
Utah Department of Environmental Quality
Volatile Organic Compound
lV
1.0 INTRODUCTION
The Utah Department of Environmental Quality ("UDEQ") Division of Waste Management and
Radiation Control ("DWMRC") noted in a Request dated September 30, 2008 (the "Request"),
for a Voluntary Plan and Schedule to Investigate and Remediate Nitrate Contamination at the
White Mesa Uranium Mill (the "Mill") (the "Plan"), that nitrate levels have exceeded the State
water quality standard of 10 mg/L in certain monitoring wells. As a result of the Request,
Energy Fuels Resources (USA) Inc. ("EFRI") entered into a Stipulated Consent Agreement with
the Utah Water Quality Board in January 2009 which directed the preparation of a Nitrate
Contamination Investigation Report ("CIR"). A subsequent letter dated December 1, 2009,
among other things, recommended that EFRI also address elevated chloride concentrations in the
CIR. The Stipulated Consent Agreement was amended in August 2011. Under the amended
Consent Agreement ("CA"), EFRI submitted a Corrective Action Plan ("CAP"), pursuant to the
requirements of the Utah Groundwater Quality Protection Rules [UAC R317-6-6.l 5(C -E)] on
November 29, 2011 and revised versions of the CAP on February 27, 2012 and May 7, 2012. On
December 12, 2012, DWMRC signed the Stipulation and Consent Order ("SCO"), Docket
Number UGW12-04, which approved the EFRI CAP, dated May 7, 2012. The SCO ordered
EFRI to fully implement all elements of the May 7, 2012 CAP.
Based on the schedule included in the CAP and as delineated and approved by the SCO, the
activities associated with the implementation of the CAP began in January 2013. The reporting
requirements specified in the CAP and SCO are included in this quarterly nitrate report.
This is the Quarterly Nitrate Monitoring Report, as required under the SCO, State of Utah
Docket No. UGW12-04 for the fourth quarter of 2022. This report meets the requirements of the
SCO, State of UDEQ Docket No. UGW12-04 and is the document which covers nitrate
corrective action and monitoring activities during the fourth quarter of 2022.
2.0 GROUNDWATER NITRATE 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. Nitrate samples and measurements taken during this reporting period
are discussed in the remainder of this section.
1
2.1.1 Nitrate Monitoring
Quarterly sampling for nitrate monitoring parameters was performed in the following wells:
TWN-1
TWN-2
TWN-3
TWN-4
TWN-7
TWN-18
TWN-20
TWN-21
TW4-22*
TW4-24*
TW4-25*
Piezometer 1
Piezometer 2
Piezometer 3A**
As discussed in Section 2.1.2 the analytical constituents required by the CAP are inorganic
chloride and nitrate+nitrite as N (referred to as nitrate in this document)
* Wells TW4-22, TW4-24, TW4-25 are chloroform investigation wells (wells installed and
sampled primarily for the chloroform investigation) and are sampled as part of the chloroform
program. The analytical suite for these three wells includes nitrate, chloride and a select list of
Volatile Organic Compounds ("VOCs") as specified in the chloroform program. These three
wells are included here because they are being pumped as part of the remediation of the nitrate
contamination as required by the SCO and the CAP. The nitrate and chloride data are included in
this report as well as in the chloroform program quarterly report. The VOC data for these three
wells will be reported in the chloroform quarterly monitoring report only.
** Piezometer 3 was abandoned and replaced with Piezometer 3A in March 2016.
The December 12, 2012 SCO approved the CAP, which specified the cessation of sampling in
TWN-5, TWN-6, TWN-8, TWN-9, TWN-10, TWN-11, TWN-12, TWN-13, TWN-14, TWN-15,
TWN-16, TWN-17, and TWN-19. The CAP and SCO also approved the abandonment of TWN-
5, TWN-8, TWN-9, TWN-10, TWN-11, TWN-12, TWN-13, TWN-15, and TWN-17 within 1
year of the SCO approval. These wells were abandoned in accordance with the DWMRC-
approved Well Abandonment Procedure on July 31, 2013. Wells TWN-6, TWN-14, TWN-16,
and TWN-19 have been maintained for depth to groundwater monitoring only, as noted in the
CAP.
Table 1 provides an overview of all locations sampled during the current period, along with the
date samples were collected from each location, and the date(s) upon which analytical data were
received from the contract laboratory. Table 1 also identifies rinsate samples collected, as well as
sample numbers associated with any required duplicates.
As indicated in Table 1, nitrate monitoring was performed in the nitrate monitoring wells,
chloroform wells TW4-22, TW4-24, TW4-25 and Piezometers 1, 2, and 3A. Analytical data for
all of the above-listed wells, and the piezometers, are included in Tab G.
2
Nitrate and chloride are also monitored in all of the Mill's groundwater monitoring wells and
chloroform investigation wells. Data from those wells for this quarter are incorporated in certain
maps and figures in this report but are discussed in their respective programmatic reports.
2.1.2 Parameters Analyzed
Locations sampled during this reporting period were analyzed for the following constituents:
• Inorganic Chloride
• Nitrate plus Nitrite as Nitrogen (referred to herein as nitrate)
Use of analytical methods consistent with the requirements found in the White Mesa Mill
Groundwater Quality Assurance Plan, ("QAP") Revision 7.7, dated February 15, 2022 was
confirmed for all analytes, as discussed later in this report.
2.1.3 Groundwater Head and Level Monitoring
Depth to groundwater was measured in the following wells and/or piezometers, pursuant to Part
I.E.3 of the Groundwater Discharge Permit ("GWDP"):
• The quarterly groundwater compliance monitoring wells
• Existing 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, MW-22, and MW-34
• The DR piezometers that were installed during the Southwest Hydrogeologic
Investigation
• Nitrate wells TWN-1, TWN-2, TWN-3, TWN-4, TWN-6, TWN-7, TWN-14, TWN-16,
TWN-18, TWN-19, TWN-20 and TWN-21
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.
All well levels used for groundwater contour mapping were measured and recorded within 5
calendar days of each other as indicated by the measurement dates in the summary sheet under
Tab C. Field data sheets for groundwater measurements are also provided in Tab C.
Weekly and monthly depth to groundwater measurements were taken in the chloroform pumping
wells MW-4, MW-26, TW4-l, TW4-2, TW4-11, TW4-19, TW4-4, TW4-21, TW4-37, TW4-39,
TW4-40, TW4-41, and the nitrate pumping wells TW4-22, TW4-24, TW4-25, and TWN-2.
In addition, monthly water level measurements were taken in non-pumping wells MW-27, MW-
30, MW-31, TWN-1, TWN-3, TWN-4, TWN-7, and TWN-18 as required by the CAP.
3
2.2 Sampling Methodology and Equipment and Decontamination Procedures
The QAP provides a detailed presentation of procedures utilized for groundwater sampling
activities under the GWDP.
The sampling methodology, equipment and decontamination procedures that were performed for
the nitrate contaminant investigation, as summarized below, are consistent with the QAP.
2.2.1 Well Purging, Sampling and Depth to Groundwater
A list of the wells in order of increasing nitrate contamination is generated quarterly. The order
for purging is thus established. The list is included with the Field Data Worksheets under Tab B.
Mill personnel start purging with all the nondetect wells and then move to the wells with
detectable nitrate concentrations, progressing from the wells having the lowest nitrate
contamination to wells with the highest nitrate contamination.
Before leaving the Mill office, the pump and hose are decontaminated using the cleaning agents
described in Attachment 2-2 of the QAP. Rinsate blanks are collected at a frequency of one
rinsate per 20 field samples.
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 specified
in the QAP 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
2. Purging two casing volumes with stable field parameters (within 10% Relative Percent
Difference ["RPD"])
3. Purging a well to dryness and stability (within 10% RPD) of a limited list of field parameters
after recovery.
Mill personnel proceed to the first well, which is the well with the lowest concentration (i.e. non-
detect) of nitrate based on the previous quarter's sampling results. Well depth measurements are
taken and the one casing volume is calculated. The purging strategy that will be used for the well
is determined at this time based on the depth to water measurement and the previous production
of the well. The Grundfos pump (a 6 to 10 gallon per minute [gpm] pump) is then lowered to the
appropriate depth in the well and purging is started. At the first well, the purge rate is measured
for the purging event by using a calibrated 5 gallon bucket. After the evacuation of the well has
been completed, the well is sampled when possible, and the pump is removed from the well and
the process is repeated at each well location moving from the least contaminated to most
contaminated well. If sample collection is not possible due to the well being purged dry, a
sample is collected after recovery using a disposable bailer and as described in Attachment 2-3
of the QAP. Sample collection follows the procedures described in Attachment 2-4 of the QAP.
After the samples have been collected for a particular well, the samples are placed into a cooler
that contains ice. The well is then recapped and Mill personnel proceed to the next well. If a
bailer has been used it is disposed of.
4
Decontamination of non-dedicated equipment, using the reagents in Attachment 2-2 of the QAP,
is performed between each sample location, and at the beginning of each sampling day, m
addition to the pre-event decontamination described above.
2.2.2 Piezometer Sampling
Samples are collected from Piezometers 1, 2 and 3A, if possible. Samples are collected from
piezometers using a disposable bailer after one set of field measurements have been collected.
Due to the difficulty in obtaining samples from the piezometers, the purging protocols set out in
the QAP are not followed.
After samples are collected, the bailer is disposed of and samples are placed into a cooler
containing ice for sample preservation and transit to the Mill's contract analytical laboratory,
Chemtech-Ford ("CTF").
2.3 Field Data
Attached under Tab B are copies of all Field Data Worksheets that were completed during the
quarter for the nitrate investigation monitoring wells and piezometers identified in Section 2.1.1
and Table 1.
2.4 Depth to Groundwater Data and Water Table Contour Map
Depth-to-groundwater measurements that were utilized for groundwater contours are included on
the Quarterly Depth to Water Sheet at Tab C of this Report along with the kriged groundwater
contour map for the current quarter generated from this data. All well levels used for
groundwater contour mapping were measured and recorded within 5 calendar days of each other
as indicated by the measurement dates in the summary sheet under Tab C. A copy of the kriged
groundwater contour map generated from the previous quarter's data is provided under Tab D.
2.5 Laboratory Results
2.5.1 Copy of Laboratory Results
The analytical results were provided by CTF. Table 1 lists the dates when analytical results were
reported to the Director, Regulatory Compliance for each well or other sample.
Analytical results for the samples collected for this quarter's nitrate investigation and a limited
list of chloroform investigation nitrate and chloride results are provided under Tab G of this
Report. Also included under Tab G are the results of analyses for duplicate samples and rinsate
samples for this sampling effort, as identified in Table 1. See the Groundwater Monitoring
Report and Chloroform Monitoring Report for this quarter for nitrate and chloroform analytical
results for the groundwater monitoring wells and chloroform investigation wells not listed in
Table 1.
5
2.5.2 Regulatory Framework
As discussed in Section 1.0 above, the Request, Plan, and CA each triggered a series of actions
on EFRI' s part. Potential surficial sources of nitrate and chloride have been described in the
December 30, 2009 CIR and additional investigations into potential sources were completed and
discussed with DWMRC in 2011. Pursuant to the CA, the CAP was submitted to the Director of
the Division Waste Management and Radiation Control (the "Director") on May 7, 2012. The
CAP describes activities associated with the nitrate in groundwater. The CAP was approved by
the Director on December 12, 2012. This quarterly report documents the monitoring consistent
with the program described in the CAP.
3.0 QUALITY ASSURANCE AND DATA VALIDATION
EFRI's Director, Regulatory Compliance performed a Quality Assurance/Quality Control
("QA/QC") review to confirm compliance of the monitoring program with the 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 data 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 field data QA/QC, holding times,
receipt temperature and laboratory data QA/QC are discussed in Sections 3.4.1 through 3.4.7
below.
The analytical laboratory has provided summary reports of the analytical QA/QC measurements
necessary to maintain conformance with National Environmental Laboratory Accreditation
Conference 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 G. Results of the
review of the laboratory QA/QC information are provided under Tab H and 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 nitrate investigation program consist of one field duplicate sample for
each 20 samples, DI Field Blanks ("DIFB"), and equipment rinsate samples.
During the quarter, one duplicate sample was collected as indicated in Table 1. The duplicate
was sent blind to the analytical laboratory and analyzed for the same parameters as the nitrate
wells.
One rinsate blank sample was collected as indicated on Table 1. Rinsate samples are labeled with
the name of the subsequently purged well with a terminal letter "R" added ( e.g. TWN-7R).
6
The field QC sample results are included with the routine analyses under Tab G.
3.2 Adherence to Mill Sampling SOPs
The Director, Regulatory Compliance 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 GWDP for nitrate 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
nitrate monitoring program. Consistent with these requirements, the Director, Regulatory
Compliance performed the following evaluations: a field data QA/QC evaluation, a holding time
evaluation, an analytical method check, a reporting limit evaluation, a QC evaluation of sample
duplicates, a QC evaluation of control limits for analysis and blanks, a receipt temperature
evaluation, and a rinsate evaluation. Because no VOCs are analyzed for the nitrate contamination
investigation, no trip blanks are required in the sampling program. Each evaluation is discussed
in the following sections. Data check tables indicating the results of each test are provided under
TabH.
3.4.1 Field Data QA/QC Evaluation
The Director, Regulatory Compliance performs a review of all 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 stability of five parameters:
conductance, pH, temperature, redox potential, turbidity, and dissolved oxygen ("DO"). Review
of the Depth to Water data confirms that all depth measurements used for development of
groundwater contour maps were conducted within a five-day period of each other. The results of
this quarter's review are provided under Tab H.
Based upon the review of the field data sheets, field work was completed in compliance with the
QAP purging and field measurement 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 TWN-01, TWN-04, and TWN-18 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 TWN-03, TWN-07, TWN-20, and TWN-21 were purged to dryness before two casing
7
volumes were evacuated. After well recovery, one set of measurements for the field parameters
of pH, specific conductivity, and water temperature only were taken; the samples were collected,
and another set of measurements for pH, specific conductivity, and water temperature were
taken. Stabilization of pH, conductivity and temperature are required within 10% RPD under the
QAP. All field parameters for this requirement were stable within 10% RPD.
Continuously Pumped Wells
Wells TWN-02, TW4-22, TW4-24, and TW4-25 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. As previously noted, TW4-22, TW4-24, and TW4-25 are
chloroform investigation wells and are sampled under the chloroform program. Data for nitrate
and chloride are provided here for completeness purposes.
During review of the field data sheets, it was observed that sampling personnel consistently
recorded depth to water to the nearest 0.01 foot.
All field parameters for all wells were within the QAP required limits, as indicated below.
The field data collected during the quarter were in compliance with QAP requirements.
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 H. All samples were received and analyzed within the required
holding time.
3.4.3 Analytical Method Checklist
All analytical methods reported by the laboratory were checked against the required methods
enumerated in the QAP. Analytical method checks are provided in Tab H. All methods were
consistent with the requirements of the QAP.
3.4.4 Reporting Limit Evaluation
All analytical method reporting limits ("RLs") reported by the laboratory were checked against
the reporting limits enumerated in the QAP. Reporting Limit Checks are provided in Tab H. All
analytes were measured and reported to the required reporting limits, with the exception of
several samples that had increased reporting limits due to matrix interference or required dilution
due to the sample concentration. However, in all of those cases the analytical results were greater
than the reporting limit used.
3.4.5 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-
8
01 as cited in the QAP. The RPDs are calculated for duplicate pairs for all analytes regardless of
whether or not the reported concentrations are greater than 5 times the required detection limits.
However, data will be considered noncompliant only when the results are greater than 5 times
the required detection limit and the RPO is greater than 20%.
The duplicate results were within a 20% RPO in the samples. Results of the RPO test are
provided in Tab H.
3.4.6 Other Laboratory QA/QC
Section 9.2 of the QAP requires that the laboratory's QNQC 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-specific required limits, or
that the case narrative sufficiently explains any deviation from these limits. Results of this
quantitative check are provided in Tab H.
The lab QNQC results met these specified acceptance limits.
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/MSO 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 QNQC 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 H. 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 RPOs 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
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 information from the Laboratory QNQC Summary Reports indicates that the Laboratory
Control Sample recoveries were acceptable, which indicate that the analytical system was
operating properly.
9
The QAP Section 8.1.2 requires that each analytical batch shall be accompanied by a reagent
blank. All analytical batches routinely contain a blank, which is a laboratory-grade water blank
sample made and carried through all analytical steps. For the Mill samples, a method blank is
prepared for all analytical methods. The information from the Laboratory QA/QC Summary
Reports indicates that the method blanks did not contain detections of any target analytes above
the RL.
3.4. 7 Receipt Temperature Evaluation
Chain of Custody sheets were reviewed to confirm compliance with the QAP requirement in
QAP Table 1 that samples be received at 6°C or lower. Sample temperatures checks are provided
in Tab H. All samples were received within the required temperature limit.
3.4.8 Rinsate Check
Rinsate checks are provided in Tab H. A comparison of the rinsate blank sample concentration
levels to the QAP requirements -that rinsate sample concentrations be one order of magnitude
lower than that of the actual well -indicated that all of the rinsate blank analytes met this
criterion. All rinsate and DIFB blank samples were non-detect for the quarter.
4.0 INTERPRETATION OF DATA
4.1 Interpretation of Groundwater Levels, Gradients and Flow Directions.
4.1.1 Current Site Groundwater Contour Map
As stated above, a listing of groundwater level readings for the current quarter (shown as depth
to groundwater in feet) is included under Tab C. The data from this tab has been interpreted
(interpolated by kriging) and plotted in a water table contour map, provided under the same tab.
The contour map is based on the current quarter's data for all wells.
The water level contour maps 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 is still evident and locally changes the generally
southerly perched water flow patterns. For example, northeast of the Mill site, mounding
associated with formerly used wildlife ponds 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 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
10
plumes. Specifically, past recharge from the 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 during discussions 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, nitrate concentrations within and adjacent to the nitrate plume appear to have been
impacted to a lesser extent than chloroform and nitrate concentrations within and in the vicinity
of the chloroform 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 wildlife ponds.
Localized increases in concentrations of constituents such as nitrate and chloride within and near
the nitrate plume may occur even when the nitrate plume is under control based on the Nitrate
CAP requirements. Ongoing mechanisms that can be expected to increase the concentrations of
nitrate and chloride 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 zones rece1vmg
primarily low constituent concentration pond water will result in wells intercepting the
zones 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 TW4-40 (added during the second quarter of 2019). The overall
impact was expected to be generally higher constituent concentrations in these wells over time
11
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 TW 4-41.
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 TW4-4 likely resulted from 1) variable permeability conditions in the vicinity of
TW4-4, and 2) persistent relatively low water levels at adjacent well TW4-14.
Pumping of nitrate wells TW4-22, TW4-24, TW4-25, and TWN-2 began during the first quarter
of 2013. Water level patterns near these 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 elevation at TWN-7. Although positioned up-to cross-
gradient of the nitrate pumping wells, TWN-7 is also typically downgradient of TWN-3 and the
northern (upgradient) extremity of the nitrate plume. Since 2012, water levels in TWN-7 have
risen 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.
Capture associated with nitrate pumping is expected to continue to increase over time as water
levels decline due to pumping and to cessation of water delivery to the northern wildlife ponds.
Interaction between nitrate and chloroform pumping is expected to enhance the capture of the
nitrate pumping system. The long-term interaction between the nitrate and chloroform pumping
systems is evolving, and changes will be reflected in data collected during routine monitoring.
As discussed above, variable permeability conditions are one likely reason for the prior 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 TW4-4 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,
TW4-31, 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 TW4-4 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
12
of 2007 and the fourth quarter of 2009 (just prior to the start of TW 4-4 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 level at TW4-6 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 between the fourth quarter of 2020 and last quarter, have been
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 chloroform plume since the first quarter of 2021) has trended downward since 2013.
These generally downward trends are attributable to both reduced wildlife pond recharge and
pumping. Although water levels at some of the wells marginal to the chloroform plume such as
TW 4-14, TW 4-27 and TW 4-31 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 persistent, relatively low water level at non-pumping well TW4-14, located
east of TW4-4 and TW4-6. Although water level differences among these three wells had
diminished, the water level at TW4-14 was typically lower than the water level at TW4-6 and
several feet lower than the water level at TW 4-4 even though TW 4-4 has been pumping since
2010. 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 5535.3 feet above mean sea level ["ft amsl"]) is more than 6 feet higher
than the water level at TW4-6 (approximately 5528.6 ft amsl), and is more than 4 feet higher
than the water level at TW4-4 (approximately 5530.9 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. Prior to the installation of TW4-27, the persistently low
water level at TW 4-14 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
13
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 (5526.6 feet amsl) is, however, lower than water
levels at adjacent wells TW4-6 (5528.6 feet amsl) and TW4-23 (5530.6 feet amsl), as shown in
the detail water level map under Tab C.
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 TW 4-4, TW 4-6, and TW 4-26, White Mesa Uranium
Mill, July 201 O; 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, TW4-3 l, 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
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 (approximately 5528.5 ft. amsl) is more than 6 feet
lower than the water level at TW4-14 (5535.3 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 TW 4-14 and
TW4-27 delayed responses at these locations. Until pumping started at TW4-41, 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
14
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 TW4-14, consistent with the lower rate of increase in water levels at TW4-27,
and the earlier reduction in the rate of increase (since early 2014) as discussed above).
4.1.2 Comparison of Current Groundwater Contour Map to Groundwater Contour Map
for Previous Quarter
The groundwater contour map for the Mill site for the previous quarter, as submitted with the
Nitrate Monitoring Report for the previous quarter, is attached under Tab D. A comparison of the
water table contour maps for the current quarter (fourth quarter of 2022) to the water table
contour maps for the previous quarter (third quarter of 2022) 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 capture resulting from pumping is smaller than last quarter's capture.
The drawdowns at chloroform pumping wells MW-26 and TW4-2 increased by more than 2 feet
this quarter; while drawdowns at chloroform pumping wells TW4-4, TW4-21 and TW4-39; and
nitrate pumping wells TW4-22 and 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 level for
chloroform pumping well TW 4-11 is below the depth of the Brushy Basin contact this quarter.
In addition, last quarter's reported increase in water level (decrease in drawdown) of nearly 52
feet at chloroform pumping well TW4-2 is considered anomalous and likely due to measurement
error. The current quarter's reported decrease in water level (increase in drawdown) at TW4-2
brings the water level in line with typical historic readings. 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 historic persistently 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. Southerly expansion of capture was
additionally enhanced in the second quarter of 2019 by the initiation of pumping at TW 4-40.
The water level at Piezometer 3A decreased by 0.8 feet this quarter; the water level at TWN-1
decreased by 0.04 feet; and water levels at Piezometers 4 and 5 decreased by as much as 0.21
feet. These decreases are consistent with 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
15
mounds. However, water levels at Piezometers 1 and 2 increased by as much as 0.97 feet; and
the water level at TWN-4 increased by 0.28 feet.
The reported water level at MW-20 decreased by nearly 3.2 feet. Water level variability at this
well likely results from low permeability and variable intervals between purging/sampling and
water level measurement. The reported water level decrease at MW-20 more than compensates
for the reported increase last quarter.
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 this
quarter.
4.1.3 Hydrographs
Attached under Tab E are hydrographs showing groundwater elevation in each nitrate
contaminant investigation monitor well over time. Per the CAP, nitrate wells TWN-6, TWN-14,
TWN-16, and TWN-19 have been maintained for depth to groundwater monitoring only. These
hydrographs are also included in Tab E.
4.1.4 Depth to Groundwater Measured and Groundwater Elevation
Attached in 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.
4.2 Effectiveness of Hydraulic Containment and Capture
4.2.1 Hydraulic Containment and Control
The CAP states that hydraulic containment and control will be evaluated in part based on water
level data and in part on concentrations in wells downgradient of pumping wells TW4-22 and
TW4-24.
As per the CAP, the fourth quarter of 2013 was the first quarter that hydraulic capture associated
with nitrate pumping wells TW4-22, TW4-24, TW4-25, and TWN-2 was evaluated. Hydraulic
containment and control based on water level data is considered successful per the CAP if the
entire nitrate plume upgradient of TW4-22 and TW4-24 falls within the combined capture of the
nitrate pumping wells. Capture zones based on water level contours calculated by kriging the
current quarter's water level data are provided on water level contour maps included under Tab
C. The nitrate capture zones are defined by the bounding stream tubes associated with nitrate
pumping wells. Each bounding stream tube represents a flow line parallel to the hydraulic
gradient and therefore perpendicular to the intersected water level contours. Assuming that the
stream tubes do not change over time, all flow between the bounding stream tubes associated
with a particular pumping well is presumed to eventually reach and be removed by that well.
Capture associated with chloroform pumping wells is also included on these maps because the
influence of the chloroform and nitrate pumping systems overlap.
16
The specific methodology for calculating the nitrate capture zones is substantially the same as
that used since the fourth quarter of 2005 to calculate the capture zones for the chloroform
program, as agreed to by the DWMRC and EFRI. The procedure for calculating nitrate capture
zones is as follows:
1) Calculate water level contours by gridding the water level data on approximately 50-foot
centers using the ordinary linear kriging method in Surfer™. Default kriging parameters
are used that include a linear variogram, an isotropic data search, and all the available
water level data for the quarter, including relevant seep and spring elevations.
2) Calculate the capture zones by hand from the kriged water level contours following the
rules for flow nets:
-From each pumping well, reverse track the stream tubes that bound the capture zone of
each well,
-maintain perpendicularity between each stream tube and the kriged water level contours.
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 MW-
4, TW4-1, TW4-11, TW4-19, TW4-37, TW4-40 and TW4-41; and nitrate pumping wells TW4-
24 and TW4-25 were less than two feet. Water level decreases occurred in chloroform pumping
wells MW-4 (nearly 0.7 feet): MW-26 (more than 10 feet); TW4-1 (nearly 1.1 feet); TW4-2
(more than 41 feet); TW4-l 1 (approximately 0.63 feet); TW4-37 (nearly 0.7 feet); TW4-40
(approximately 0.03 feet); and TW4-41 (approximately 0.04 feet); and in nitrate pumping well
TW4-24 (nearly 5 feet). Water level increases occurred in chloroform pumping wells TW4-4
(nearly 6 feet); TW4-l 9 (approximately 1.4 feet); TW4-21 (nearly 3.6 feet); and TW4-39
(approximately 3.2 feet); and in nitrate pumping wells TW4-22 (approximately 10.1 feet); TW4-
25 (approximately 0.5 feet); and TWN-2 (approximately 9.4 feet).
As discussed in Section 4.1.2, last quarter's reported increase in water level (decrease in
drawdown) of nearly 52 feet at chloroform pumping well TW4-2 was considered anomalous and
likely due to measurement error. The current quarter's reported decrease in water level (increase
in drawdown) at TW4-2 brings the water level in line with typical historic readings. Overall, the
apparent combined capture area of the nitrate and chloroform pumping systems is smaller than
last quarter; capture decreased primarily due to decreased drawdowns at nitrate pumping wells
TW4-22 and TWN-2.
The capture associated with nitrate pumping wells and the eight chloroform pumping wells
added since the first quarter of 2015 is expected to generally increase over time as water levels
continue to decline due to pumping and to cessation of water delivery to the northern wildlife
ponds. Slow development of hydraulic capture is consistent with and expected based on the
relatively low permeability of the perched zone at the site. Furthermore, although the perched
groundwater mound has diminished, and water levels at TWN-7 have risen, the definition of
capture associated with the nitrate pumping system continues to be influenced by the remaining
perched groundwater mound and the historically relatively low water level at TWN-7.
That pumping is likely sufficient to eventually capture the entire plume upgradient of TW4-22
and TW4-24 can be demonstrated by comparing the combined average pumping rates of all
nitrate pumping wells for the current quarter to estimates of pre-pumping flow through the nitrate
17
plume near the locations of TW4-22 and TW4-24. The pre-pumping flow calculation presented
from the fourth quarter of 2013 through the second quarter of 2015 was assumed to represent a
steady state 'background' condition that included constant recharge, hydraulic gradients, and
saturated thicknesses; the calculation did not account for reduced recharge and saturated
thickness caused by cessation of water delivery to the northern wildlife ponds since March, 2012.
Because significant water level declines have occurred in upgradient portions of the nitrate
plume due to reduced recharge, hydraulic gradients within the plume have been reduced
independent of pumping. Changes related to reduced wildlife pond recharge have also resulted in
reduced well productivity. Generally reduced productivities of nitrate pumping well TW4-24 and
chloroform pumping well TW 4-19 since the third quarter of 2014 are at least partly the result of
reduced recharge.
The pre-pumping flow through the nitrate plume near TW4-22 and TW4-24 that was presented
from the fourth quarter of 2013 through the second quarter of 2015 was estimated using Darcy's
Law to lie within a range of approximately 1.31 gpm to 2. 79 gpm. Calculations were based on an
average hydraulic conductivity range of 0.15 feet per day (ft. /day) to 0.32 ft. /day (depending on
the calculation method), a pre-pumping hydraulic gradient of 0.025 feet per foot (ft. /ft.), a plume
width of 1,200 feet, and a saturated thickness (at TW4-22 and TW4-24) of 56 feet. The hydraulic
conductivity range was estimated by averaging the results obtained from slug test data that were
collected automatically by data loggers from wells within the plume and analyzed using the KGS
unconfined slug test solution available in Aqtesolv™ (see Hydro Geo Chem, Inc. [HGC], August
3, 2005: Perched Monitoring Well Installation and Testing at the White Mesa Uranium Mill,
April Through June 2005; HGC, March 10, 2009: Perched Nitrate Monitoring Well Installation
and Hydraulic Testing, White Mesa Uranium Mill; and HGC, March 17 2009: Letter Report to
David Frydenlund, Esq, regarding installation and testing of TW4-23, TW4-24, and TW4-25).
These results are summarized in Table 6. Data from fourth quarter 2012 were used to estimate
the pre-pumping hydraulic gradient and saturated thickness. These data are summarized in
Tables 7 and 8.
The average hydraulic conductivity was estimated to lie within a range of 0.15 ft. /day to 0.32 ft.
/day. Averages were calculated four ways. As shown in Table 6 arithmetic and geometric
averages for wells MW-30, MW-31, TW4-22, TW4-24, TW4-25, TWN-2, and TWN-3 were
calculated as 0.22 and 0.15 ft. /day, respectively. Arithmetic and geometric averages for a subset
of these wells (MW-30, MW-31, TW4-22, and TW4-24) were calculated as 0.32 and 0.31
ft./day, respectively. The lowest value, 0.15 ft. /day, represented the geometric average of the
hydraulic conductivity estimates for all the plume wells. The highest value, 0.32 ft. /day,
represented the arithmetic average for the four plume wells having the highest hydraulic
conductivity estimates (MW-30, MW-31, TW4-22, and TW4-24).
Pre-pumping hydraulic gradients were estimated at two locations; between TW4-25 and MW-31
(estimated as 0.023 ft. /ft.), and between TWN-2 and MW-30 (estimated as 0.027 ft. /ft.). These
results were averaged to yield the value used in the calculation (0.025 ft. /ft.). The pre-pumping
saturated thickness of 56 feet was an average of pre-pumping saturated thicknesses at TW4-22
and TW4-24.
As discussed above the hydraulic gradient and saturated thickness used in the pre-pumping
calculations were assumed to represent a steady state 'background' condition that was
18
inconsistent with the cessation of water delivery to the northern wildlife ponds, located
upgradient of the nitrate plume. Hydraulic gradients and saturated thicknesses within the plume
have declined since nitrate pumping began as a result of two factors: reduced recharge from the
ponds, and the effects of pumping. A more representative 'background' flow condition that
accounts for reduced wildlife pond recharge was presented in Attachment N (Tab N) of the third
quarter 2015 Nitrate Monitoring report. The original pre-pumping 'background' flow range of
1.31 gpm to 2.79 gpm has been recalculated to range from 0.79 gpm to 1.67 gpm, as presented in
Table 9. This calculation is still considered conservative because the high end of the range
assumed an arithmetic average hydraulic conductivity of a subset of plume wells having the
highest conductivities. In addition, since the 'background' flow was recalculated, saturated
thicknesses and hydraulic gradients within the plume have decreased, further reducing the rate of
flow through the plume.
The cumulative volume of water removed by nitrate pumping wells TW4-22, TW4-24, TW4-25,
and TWN-2 during the current quarter was approximately 233,350 gallons. This equates to an
average total extraction rate of approximately 1.8 gpm over the 90-day quarter. This average
accounts for time periods when pumps were off due to insufficient water columns in the wells.
The current quarter's pumping of 1.8 gpm, which is larger than last quarter's, exceeds the high
end of the recalculated 'background' flow range of 0.79 gpm to 1.67 gpm.
Although TW4-22, TW4-24, TW4-25, and TWN-2 are designated nitrate pumping wells, some
chloroform pumping wells are also located within the nitrate plume because the northwest
portion of the chloroform plume commingles with the central portion of the nitrate plume.
Chloroform pumping well TW 4-19 is periodically within the nitrate plume; chloroform pumping
well TW4-21, since pumping began in 2015, is typically within the nitrate plume; and TW4-37 is
consistently within the nitrate plume. TW4-21 was outside the plume during the second quarter
of 2017; the third quarter of 2018; the first quarter of 2019; the fourth quarter of2019; the first
quarter of2020; the first and second quarters of2022; and the current quarter. Although TW4-19
and TW4-21 are outside the plume this quarter, both TW4-19 and TW4-21 are located near the
plume margin, and nitrate plume remediation benefits from pumping both wells. Although
periodically within the nitrate plume, due to collapse, TW4-20 was abandoned during October,
2020.
Because chloroform pumping well TW4-37 is unambiguously within the nitrate plume this
quarter it is appropriate to include it in estimating total pumping from the nitrate plume.
Including TW4-37, the volume of water removed by TW4-22, TW4-24, TW4-25, TW4-37, and
TWN-2 this quarter is approximately 276,602 gallons or approximately 2.1 gpm, which exceeds
the high end of the recalculated 'background' flow range by approximately 0.43 gpm, or a factor
of approximately 1.3. If pumping from TW4-21 is included, total nitrate pumping increases to
approximately 2.9 gpm, which exceeds the high end of the recalculated 'background' flow range
by approximately 1.2 gpm, or a factor of approximately 1. 7.
Because the arithmetic average hydraulic conductivity of a subset of plume wells having the
highest conductivities was used to calculate the high end of the 'background' flow range, the
high end is considered less representative of actual conditions than using the geometric average
conductivity of all of the plume wells. Therefore, nitrate pumping likely exceeds the actual flow
19
through the plume by more than a factor of 1.7 as calculated above. Nitrate pumping is therefore
considered adequate at the present time even with reduced productivity at TW4-24.
The CAP states that MW-5, MW-11, MW-30 and MW-31 are located downgradient of TW4-22
and TW4-24. MW-30 and MW-31 are within the plume near its downgradient edge and MW-5
and MW-11 are outside and downgradient of the plume. Per the CAP, hydraulic control based on
concentration data will be considered successful if the nitrate concentrations in MW-30 and
MW-31 remain stable or decline, and the nitrate concentrations in downgradient wells MW-5
and MW-11 do not exceed the IO mg/L standard.
Table 5 presents the nitrate concentration data for MW-30, MW-31, MW-5 and MW-11, which
are down-gradient of pumping wells TW4-22 and TW4-24. Based on these concentration data,
the nitrate plume is under control.
The nitrate plume has not migrated downgradient to MW-5 or MW-11; nitrate at MW-11 was
detected at a concentration of approximately 2.9 mg/L; and was detected at MW-5 at
approximately 0.2 mg/L. Between the previous and current quarters, nitrate concentrations
increased slightly at both MW-30 and MW-31. Nitrate in MW-30 increased from approximately
17.6 mg/L to 17.9 mg/L; and nitrate in MW-31 increased from 16.9 mg/L to 17 mg/L. Although
short-term fluctuations have occurred, nitrate concentrations in MW-30 and MW-31 have been
relatively stable, demonstrating that plume migration to the south is minimal or absent. However,
recent increases in nitrate at downgradient well MW-11 suggest that downgradient migration is
still occurring but at a low rate.
MW-30 and MW-31 are located at the toe of the nitrate plume which has associated elevated
chloride. Chloride is generally increasing at MW-31, as well as at MW-30, but at a lower rate
(see Tab J and Tab K, discussed in Section 4.2.4). These increases are consistent with continuing
downgradient migration of the elevated chloride associated with the nitrate plume. The increases
in chloride and relatively stable nitrate at both wells suggest a natural attenuation process that is
affecting nitrate but not chloride. A likely process that would degrade nitrate but leave chloride
unaffected is reduction of nitrate by pyrite. The likelihood of this process in the perched zone is
discussed in HOC, December 7 2012; Investigation of Pyrite in the Perched Zone, White Mesa
Uranium Mill Site, Blanding, Utah. A more detailed discussion is presented in HOC, December
11, 2017; Nitrate Corrective Action Comprehensive Monitoring Evaluation (CACME) Report,
White Mesa Uranium Mill Near Blanding, Utah.
4.2.2 Current Nitrate and Chloride Isoconcentration Maps
Included under Tab I of this Report are current nitrate and chloride iso-concentration maps for
the Mill site. Nitrate iso-contours start at 5 mg/L and chloride iso-contours start at 100 mg/L
because those values appear to separate the plumes from background. All nitrate and chloride
data used to develop these iso-concentration maps are from the current quarter's sampling
events.
4.2.3 Comparison of Areal Extent
Although the plume expanded in some areas and contracted in others, the plume area is smaller
than last quarter. Specifically the plume boundary has contracted away from TW4-21 due to the
20
decrease in concentration at this well, causing the kriging function to separate the northern one-
third and southern two thirds of the plume. Conversely, small increases in concentration at MW-
27 and MW-28 (located outside and west of the plume) caused slight expansion of the western
plume boundary; and an increase in concentration at MW-11 caused slight downgradient
expansion of the southern plume boundary towards MW-11. TWN-7, which was incorporated
within the plume for the first time during the second quarter of 2018, and was temporarily
outside the plume during the fourth quarter of 2021, remains within the plume this quarter.
TWN-7 has historically been located down-to cross-gradient of the northeastern (upgradient)
extremity of the plume, but migration of the plume toward TWN-7 has been slow presumably
due to the low permeability at TWN-7. Recently installed well TWN-20 bounds the plume to the
west ofTWN-7.
TW4-18 remained outside the plume with a concentration of approximately 3.6 mg/L. TW4-18
was encompassed by an eastward-extending 'spur' in the plume during the third quarter of 2015,
similar to an occurrence during the third quarter of 2013. Changes in nitrate concentrations near
TW4-18 are expected to result from changes in pumping and from the cessation of water
delivery to the northern wildlife ponds. The reduction in low-nitrate recharge from the wildlife
ponds appeared to be having the anticipated effect of generally increased nitrate concentrations
in some wells downgradient of the ponds.
However, decreasing to relatively stable nitrate concentrations at most wells in the vicinity of
TW4-18 between the first quarter of 2014 and the second quarter of 2015 after previous
increases suggested that conditions in this area had stabilized. Since the second quarter of 2015,
concentrations at TW4-18 exceeded 10 mg/L only once (third quarter of 2015). Over this same
time period, concentrations at nearby wells TW4-3 and TW4-9 remained below 10 mg/L;
concentrations at TW4-5 exceeded 10 mg/L only once (first quarter of 2016); and, until the first
quarter of 2019, concentrations at TW 4-10 remained above 10 mg/L. Since the first quarter of
2019, concentrations at TW 4-10 have remained below 10 mg/L.
Although increases in concentration in the area downgradient of the wildlife ponds have been
anticipated as the result of reduced dilution, the magnitude and timing of the increases are
difficult to predict due to the measured variations in hydraulic conductivity at the site and other
factors. Nitrate in the area directly downgradient (south to south-southwest) of the northern
wildlife ponds is associated with the chloroform plume, is cross-gradient of the nitrate plume as
defined in the CAP, and is within the capture zone of the chloroform pumping system. Perched
water flow in the area is to the southwest in the same approximate direction as the main body of
the nitrate plume.
Nitrate concentrations at the downgradient edge of the plume (MW-30 and MW-31) have been
relatively stable, demonstrating that nitrate plume migration to the south is minimal or absent;
however, recent increases in nitrate at downgradient well MW-11 suggest that downgradient
migration is still occurring but at a low rate. As discussed in Section 4.2.1, relatively stable
nitrate at MW-30 and MW-31 is consistent with a natural attenuation process affecting nitrate
but not chloride, as elevated chloride associated with the nitrate plume continues to migrate
downgradient.
With regard to chloroform, changes in the boundary of the chloroform plume are attributable in
part to the initiation of nitrate pumping. Once nitrate pumping started, the boundary of the
chloroform plume migrated to the west toward nitrate pumping well TW4-24, and then to the
southwest to reincorporate chloroform monitoring wells TW 4-6 and TW 4-16. Concentration
21
increases leading to the reincorporation of these wells occurred first at TW4-24, then at TW4-16
and TW 4-6. Reduced recharge at the southern wildlife pond and decay of the associated
groundwater mound are also expected to influence chloroform concentrations in the vicinity of
TW4-6.
Subsequent contraction of the chloroform plume eastward away from TW4-24 and TW4-16
through the first quarter of 2016 is attributable in part to the start-up of additional chloroform
pumping wells during the first half of 2015, and reduced productivity at TW4-24. TW4-16 and
TW 4-24 are just within the chloroform plume this quarter. In addition, due to contraction of the
plume away from TW4-6, TW4-6 has been outside the plume since the third quarter of 2018.
More details regarding the chloroform data and interpretation are included in the Quarterly
Chloroform Monitoring Report submitted under separate cover.
4.2.4 Nitrate and Chloride Concentration Trend Data and Graphs
Attached under Tab J is a table summarizing values for nitrate and chloride for each well over
time.
Attached under Tab K are graphs showing nitrate and chloride concentration plots in each
monitor well over time.
4.2.5 Interpretation of Analytical Data
Comparing the nitrate analytical results to those of the previous quarter, as summarized in the
tables included under Tab J, the following observations can be made for wells within and
immediately surrounding the nitrate plume:
a) Nitrate concentrations have increased by more than 20% m the following wells
compared to last quarter: MW-11 and TW4-39;
b) Nitrate concentrations have decreased by more than 20% in the following wells
compared to last quarter: MW-26, TW4-19, TW4-21 and TWN-18;
c) Nitrate concentrations have remained within 20% in the following wells compared to
last quarter: MW-27, MW-28, MW-30, MW-31 , TW4-16, TW4-18, TW4-22, TW4-24,
TW4-25, TW4-37, TWN-1, TWN-2, TWN-3, TWN-4, TWN-7, and TWN-20;
d) MW-25 and MW-32 remained non-detect; and
e) TWN-7 remains within the plume this quarter.
As indicated, nitrate concentrations for many of the wells with detected nitrate were within 20%
of the values reported during the previous quarter, suggesting that variations are within the range
typical for sampling and analytical error. The remaining wells had changes in concentration
greater than 20%. The latter includes chloroform pumping wells MW-26, TW4-19, TW4-21, and
TW4-39; and non-pumping wells MW-11 and TWN-18. MW-11 and TWN-18 are located
outside the plume near the plume margins.
22
Fluctuations in concentrations at pumping wells and wells adjacent to pumping wells likely
result in part from the effects of pumping as discussed in Section 4.1.1. Fluctuations in
concentration can also be expected at MW-11 and TWN-18 because they are located just outside
of the plume. In addition, concentrations at MW-11 are less than 3 mg/1; and at TWN-18 are less
than 1 mg/L.
MW-27, located west ofTWN-2; TWN-20, located west ofTWN-7; and TWN-18, located north
of TWN-3, bound the nitrate plume to the west and north (See Figure 1-1 under Tab I). In
addition, MW-28 and MW-29 bound the plume to the west; and the southernmost
(downgradient) boundary of the plume remains between MW-30/MW-31 and MW-5/MW-11.
Nitrate concentrations at MW-5 (adjacent to MW-11) and MW-11 have historically been low
(typically < 1 mg/L) or non-detect for nitrate; however, since 2021, nitrate at MW-11 has
occasionally exceeded 1 mg/L and was detected at 2.9 mg/L this quarter (See Table 5). The
nitrate concentrations at MW-5 (0.2 mg/L) and MW-11 (2.9 mg/L) are consistent with the
relative stability of the downgradient margin of the nitrate plume; although recent increases at
MW-11 suggest continued, but slow, downgradient plume migration. MW-25, MW-26, MW-32,
TW4-16, TW4-19, TW4-21, TW4-25, TW4-39, TWN-1 and TWN-4 bound the nitrate plume to
the east.
Nitrate concentrations outside the nitrate plume are typically greater than 10 mg/L at a few
locations: TW4-12 (13.8 mg/L last quarter dropping to 4.7 mg/L this quarter); TW4-26 (10.4
mg/L); TW4-27 (18.1 mg/L); and TW4-28 (16.6 mg/L). In the past concentrations at TW4-10
and TW4-38 typically exceeded 10 mg/L. However, TW4-10 dropped below 10 mg/L during the
first quarter of 2019; and TW4-38 dropped below 10 mg/L during the first quarter of 2018. In
addition, TW 4-12 remained below 10 mg/L between the second quarter of 2019 and first quarter
of 2022. Concentrations at TW4-18 have also occasionally exceeded 10 mg/L. Each of these
wells is located southeast of the nitrate plume as defined in the CAP and is separated from the
plume by a well or wells where nitrate concentrations are either non-detect, or, if detected, are
less than 10 mg/L. The nitrate concentrations at all of the above wells except TW4-12 are within
20% of last quarter's concentrations.
Since 2010, nitrate concentrations at TW 4-10 and TW 4-18 have been above and below 10 mg/L
Concentrations were below 10 mg/L between the first quarter of 2011 and second quarter of
2013, and mostly close to or above 10 mg/L between the second quarter of 2013 and third
quarter of 2015. However, concentrations at TW4-18 have been below 10 mg/L since the third
quarter of 2015 and (as discussed above) the concentration at TW4-10 dropped below 10 mg/L
during the first quarter of 2019. Concentrations at nearby well TW4-5 have exceeded 10 mg/L
only twice since 2010, and concentrations at nearby wells TW4-3 and TW4-9 have remained
below 10 mg/L. Nitrate at TW4-5, TW4-10, and TW4-18 is associated with the chloroform
plume, and is within the capture zone of the chloroform pumping system. Elevated nitrate at
TW4-12, TW4-26, TW4-27, TW4-28 and TW4-38 is likely related to former cattle ranching
operations at the site. Elevated nitrate at relatively recently installed well MW-38 and at MW-20
(far cross-gradient and far downgradient, respectively, of the tailings management system at the
site) is also likely related to former cattle ranching operations.
Chloride concentrations are measured because elevated chloride (greater than 100 mg/L) is
associated with the nitrate plume. Chloride concentrations at all sampled locations this quarter
23
are within 20% of their respective concentrations during the previous quarter except at
chloroform pumping wells TW4-4, TW4-19, TW4-21 and TW4-37; nitrate pumping well TWN-
2; and non-pumping wells MW-11, MW-14, MW-25, MW-30, MW-32, MW-36, TW4-3, TW4-
27, TW4-31, TW4-35, TW4-42 and PIEZ-3A. Concentrations at some of the above wells (such
as MW-11) increased while concentrations at the majority of the other wells decreased. Non-
pumping wells MW-32, TW4-3 and TW4-42 are located near chloroform pumping wells.
Concentration fluctuations at pumping wells and at wells near pumping wells likely result in part
from the effects of pumping as discussed in Section 4.1.1. MW-30 is located within but near the
chloride plume margin; and MW-11, MW-25 and MW-32 are located outside of but near the
chloride plume margin. Concentration fluctuations in wells located near the plume margins are
also expected.
TWN-7 (located upgradient [north] of the tailings management system) was positioned
historically cross-to downgradient of the upgradient (northeastern) extremities of the
commingled nitrate and chloride plumes. Recent increases in both nitrate and chloride at TWN-
7, which remains incorporated into the chloride and nitrate plumes, likely result from
northwesterly migration of the elevated nitrate and chloride contained within the upgradient
extremities of these commingled plumes. The change in chloride at TWN-7 since last quarter is
less than 20%.
Piezometer PIEZ-3A was installed in the second quarter of 2016 as a replacement to piezometer
PIEZ-3. The chloride concentration at piezometer PIEZ-3A (81.5 mg/L) is nearly 2 1h times
higher this quarter than the pre-abandonment first quarter 2016 concentration at PIEZ-3
(approximately 33 mg/L). The nitrate concentration at PIEZ-3A (approximately 11.5 mg/L) is
also higher this quarter than the pre-abandonment first quarter 2016 PIEZ-3 concentration
(approximately 2.2 mg/L).
4.3 Estimation of Pumped Nitrate Mass and Residual Nitrate Mass within the Plume
Nitrate mass removed by pumping as summarized in Table 2 includes mass removed by both
chloroform and nitrate pumping wells. Table 3 shows the volume of water pumped at each well
and Table 4 provides the details of the nitrate removal for each well.
Mass removal calculations begin with the third quarter of 2010 because the second quarter, 2010
data were specified to be used to establish a baseline mass for the nitrate plume. As stated in the
CAP, the baseline mass is to be calculated using the second quarter, 2010 concentration and
saturated thickness data "within the area of the kriged 10 mg/L plume boundary." The second
quarter, 2010 data set was considered appropriate because "the second quarter, 2010
concentration peak at TWN-2 likely identifies a high concentration zone that still exists but has
migrated away from the immediate vicinity of TWN-2."
As shown in Table 2, since the third quarter of 2010, a total of approximately 4,030 lb. of nitrate
has been removed directly from the perched zone by pumping. Prior to the first quarter of 2013,
all direct nitrate mass removal resulted from operation of chloroform pumping wells MW-4,
MW-26, TW4-4, TW4-19, and TW4-20. During the current quarter:
24
• A total of approximately 64 lb. of nitrate was removed by the chloroform pumping wells
and by nitrate pumping wells TW4-22, TW4-24, TW4-25, and TWN-2.
• Of the 64 lb. removed during the current quarter, approximately 39 lb. (or 61 %) was
removed by the nitrate pumping wells.
The calculated nitrate mass removed directly by pumping is slightly larger than last quarter's
approximately 62 lbs.
As discussed in Section 4.3.1, achievable pumping rates are expected to diminish over time as
saturated thicknesses are reduced by pumping and by cessation of water delivery to the northern
wildlife ponds. Attachment N (Tab N) of the third quarter 2015 Nitrate Monitoring report
provides an evaluation of reduced productivity at chloroform pumping well TW 4-19 and nitrate
pumping well TW4-24.
Baseline mass and current quarter mass estimates (nitrate+ nitrite as N) for the nitrate plume are
approximately 43,700 lb. and 27,014 lbs., respectively. Mass estimates were calculated within
the plume boundaries as defined by the kriged 10 mg/L isocon by 1) gridding (kriging) the
nitrate concentration data on 50-foot centers; 2) calculating the volume of water in each grid cell
based on the saturated thickness and assuming a porosity of 0.18; 3) calculating the mass of
nitrate+nitrite as N in each cell based on the concentration and volume of water for each cell; and
4) totaling the mass of all grid cells within the 10 mg/L plume boundary. Data used in these
calculations included data from wells listed in Table 3 of the CAP.
The nitrate mass estimate for the current quarter (27,014 lb.) is smaller than the mass estimate for
the previous quarter (29,852 lb.) by 2,838 lb. Since pumping began, calculated nitrate mass
within the plume has generally decreased at a rate that is on average higher than would be
expected based on direct mass removal by pumping. Changes in the quarterly mass estimates are
expected to result from several factors, primarily 1) nitrate mass removed directly by pumping,
2) natural attenuation of nitrate, and 3) re-distribution of nitrate within the plume and changes in
saturated thicknesses.
Nitrate mass removed by pumping and natural attenuation ( expected to result primarily from
pyrite oxidation/nitrate reduction) act to lower both nitrate mass and concentrations within the
plume. Both mechanisms are expected to continuously reduce both nitrate mass and
concentrations within the plume. Reductions in saturated thickness that are not accompanied by
increases in concentration will also reduce nitrate mass within the plume.
However, redistribution of nitrate within the plume is expected to result in both increases and
decreases in concentrations at wells within the plume and therefore increases and decreases in
mass estimates based on those concentrations, thus generating 'noise' in the mass estimates. In
addition, because the sum of sampling and analytical error is typically about 20%, changes in the
mass estimates from quarter to quarter of up to 20% could result from typical sampling and
analytical error alone.
Furthermore, redistribution of nitrate within the plume and changes in saturated thicknesses will
be impacted by changes in pumping and in background conditions such as the decay of the
perched water mound associated with the northern wildlife ponds. Cessation of water delivery to
25
the northern wildlife ponds is expected to result in reduced saturated thicknesses and reduced
dilution, which in tum is expected to result in increased nitrate concentrations in many wells.
Because of quarter to quarter variations in factors that impact the mass estimates, only longer-
term analyses of the mass estimates that minimize the impacts of 'noise' can provide useful
information on plume mass trends. Over the long term, nitrate mass estimates are expected to
trend downward as a result of direct removal by pumping and through natural attenuation.
The decrease in the mass estimate this quarter is attributable primarily to the substantial decrease
in concentration at TW4-21 (from approximately 14 mg/L to 2 mg/L). This decrease brought
TW4-21 outside the plume boundary and reduced the area of the plume.
As specified in the CAP, once eight quarters of data were collected (starting with the first quarter
of 2013 ), a regression trend line was to be applied to the quarterly mass estimates and evaluated.
The trend line was to be updated quarterly and reevaluated as additional quarters of data were
collected. The evaluation was to determine whether the mass estimates were increasing,
decreasing, or stable.
As the fourth quarter of 2014 constituted the eighth quarter as specified in the CAP, the mass
estimates were plotted, and a regression line was fitted to the data and evaluated. The regression
line has been updated each quarter since the fourth quarter of 2014 as shown in Figure M.1 of
Tab M. The fitted line shows a decreasing trend in the mass estimates.
5.0 LONG TERM PUMP TEST AT TWN-02, TW4-22, TW4-24, and TW4-
25 OPERATIONS REPORT
5.1 Introduction
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 SCO dated December 12,
2012.
In addition, 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. In anticipation of the final approval of the GCAP, beginning on
January 14, 2015, EFRI began long term pumping of TW4-1, TW4-2, and TW4-11 and began
long term pumping of TW4-21 and TW4-37 on June 9, 2015. In addition, EFRI is pumping
TW4-39, TW4-40 and TW4-41. 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.
Because wells MW-4, TW4-19, MW-26, TW4-4, TW4-01, TW4-02, TW4-11, TW4-21, TW4-
37, TW4-39, TW4-40 and TW4-41 are pumping wells that may impact the removal of nitrate,
they are included in this report and any nitrate removal realized as part of this pumping is
calculated and included in the quarterly reports.
26
The following information documents the operational activities during the quarter.
5.2 Pumping Well Data Collection
Data collected during the quarter included the following:
• Measurement of water levels at MW-4, TW4-19, MW-26, and, commencmg
regularly on March 1, 2010, TW4-4, on a weekly basis,
• Measurement of water levels weekly at TW4-22, TW4-24, TW4-25, and TWN-02
commencing January 28, 2013,
• Measurement of water levels weekly at TW4-01, TW4-02, and TW4-11
commencing on January 14, 2015,
• Measurement of water levels weekly at TW4-21 and TW4-37 commencing on
June 9, 2015, and on a monthly basis selected temporary wells and permanent
monitoring well,
• Measurement of water levels weekly at TW4-39 commencing on December 7,
2016,
• Measurement of water levels weekly at TW4-41 commencing on April 3, 2018,
• Measurement of water levels weekly at TW4-40 commencing on May 13, 2019.
• 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, water level measurements from chloroform pumping wells MW-4,
MW-26, and TW4-19 were conducted weekly. From commencement of pumping and regularly
after March 1, 2010 water levels in these chloroform pumping wells have been measured weekly.
From commencement of pumping in January 2013, water levels in wells TW4-22, TW4-24,
TW4-25, and TWN-02 have been measured weekly. From the commencement of pumping in
December 2016, water levels in TW4-39 have been measured; from the commencement of
pumping in April 2018 water levels in TW4-41 have been measured and from the
commencement of pumping in May 2019 water levels in TW 4-40 have been measured weekly.
Copies of the weekly Depth to Water monitoring sheets for MW-4, MW-26, TW4-19, TW4-4,
TW4-22, TW4-24, TW4-25, TWN-02, TW4-01, TW4-02, TW4-11, TW4-21, TW4-37, TW4-39,
TW4-40, and TW4-41 are included under Tab C.
Monthly depth to water monitoring is required for all of the chloroform contaminant
investigation wells and non-pumping wells MW-27, MW-30, MW-31, TWN-1, TWN-3, TWN-
4, TWN-7, and TWN-18. Copies of the monthly depth to Water monitoring sheets are included
under Tab C.
27
5.4 Pumping Rates and Volumes
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 either transferred to the Cell 1 evaporation pond or is used in the Mill process.
The pumped wells are fitted with a flow meter which records the volume of water pumped from
the well in gallons. The flow meter readings shown in Tab Care used to calculate the gallons of
water pumped from the wells each quarter as required by Section 7.2.2 of the CAP. The average
pumping rates and quarterly volumes for each of the pumping wells are shown in Table 3. The
cumulative volume of water pumped from each of the wells is shown in Table 4.
Specific operational problems observed with the well(s) or pumping equipment which occurred
during the quarter are noted below.
Unless specifically noted below, no operational problems were observed with the well or
pumping equipment during the quarter.
6.0 CORRECTIVE ACTION REPORT
There are no corrective actions required during the current monitoring period.
6.1 Assessment of Previous Quarter's Corrective Actions
There were no corrective actions required during the previous quarter's monitoring period.
7.0 CONCLUSIONS AND RECOMMENDATIONS
As per the CAP, the fourth quarter of 2013 was the first quarter that hydraulic capture associated
with nitrate pumping wells TW4-22, TW4-24, TW4-25, and TWN-2 was evaluated. Since then,
quarterly evaluation of hydraulic capture resulting from both nitrate and chloroform pumping has
been performed. Evaluation of hydraulic capture during the current quarter indicates that, while
both increases and decreases in drawdown occurred in chloroform and nitrate pumping wells, the
overall capture area this quarter is smaller than last quarter's.
Capture associated with nitrate pumping wells is expected to increase over time as water levels
decline due to pumping and due to cessation of water delivery to the northern wildlife ponds.
Nitrate capture is enhanced by the interaction of the nitrate pumping system with the chloroform
pumping system. Chloroform pumping wells located within or adjacent to the nitrate plume not
only increase overall capture, but account for much of the nitrate mass removed each quarter.
The long-term interaction between nitrate and chloroform pumping systems is evolving as
revealed by data collected as part of routine monitoring. Slow development of hydraulic capture
by the nitrate pumping system was expected and is consistent with the relatively low
permeability of the perched zone at the site.
The capture associated with the nitrate pumping system has been impacted by the perched
groundwater mound and historically relatively low water levels at TWN-7. Although the perched
groundwater mound has diminished, and water levels at TWN-7 have risen, definition of capture
28
associated with the nitrate pumping system continues to be influenced by the remaining perched
groundwater mound and the relatively low water level at TWN-7.
Nitrate pumping is likely sufficient to eventually capture the entire nitrate plume upgradient of
TW4-22 and TW4-24 even with reduced productivity at TW4-24 since the third quarter of 2014.
Hydraulic gradients and saturated thicknesses within the plume have declined since nitrate
pumping began as a result of two factors: reduced recharge from the ponds, and nitrate pumping.
A more representative 'background' flow condition that accounts for reduced wildlife pond
recharge was presented in Attachment N (Tab N) of the third quarter, 2015 Nitrate Monitoring
report. The original pre-pumping 'background' flow range of 1.31 gpm to 2.79 gpm was
recalculated to range from 0. 79 gpm to 1.67 gpm. This calculation is still considered
conservative because the high end of the calculated range assumed an arithmetic average
hydraulic conductivity of a subset of plume wells having the highest conductivities. In addition,
since the 'background' flow was recalculated, saturated thicknesses and hydraulic gradients
within the plume have decreased, further reducing the rate of flow through the plume.
The current nitrate pumping of approximately 1.8 gpm, based on water removed by TW4-22,
TW4-24, TW4-25, and TWN-2, exceeds the high end of the recalculated 'background' flow
range of 0.79 gpm to 1.67 gpm.
If water removed from the nitrate plume by chloroform pumping wells TW4-21 and TW4-37 is
included, the current nitrate pumping of approximately 2.9 gpm exceeds the high end of the
recalculated 'background' range by approximately 1.2 gpm, or a factor of approximately 1.7.
Including TW4-37 is appropriate because this well has been within the nitrate plume consistently
since initiation of pumping in 2015. Including TW4-21 is also appropriate because, although
outside the plume this quarter, TW4-21 is near the plume margin.
In addition, because the arithmetic average hydraulic conductivity of a subset of plume wells
having the highest conductivities was used in recalculating the high end of the 'background' flow
range, the high end is considered less representative of actual conditions than using the
geometric average conductivity of all of the plume wells. Therefore, nitrate pumping likely
exceeds flow through the plume by a factor greater than 1.7 times the high end of the
recalculated range. Nitrate pumping is considered adequate at the present time even with reduced
productivity at TW4-24. Furthermore, as the groundwater mound associated with former water
delivery to the northern wildlife ponds continues to decay, hydraulic gradients and saturated
thicknesses will continue to decrease, and 'background' flow will be proportionally reduced,
thereby reducing the amount of pumping needed.
This quarter nitrate concentrations at many of the wells within and adjacent to the nitrate plume
were within 20% of the values reported during the previous quarter, suggesting that variations
are within the range typical for sampling and analytical error. Changes in concentration (both
increases and decreases) greater than 20% occurred in chloroform pumping wells MW-26, TW4-
19, TW4-21, and TW4-39; and non-pumping wells MW-11 and TWN-18. MW-11 and TWN-18
are located outside the plume near the plume margins.
Fluctuations in concentrations at pumping wells and wells adjacent to pumping wells likely
result in part from the effects of pumping as discussed in Section 4.1.1. Fluctuations in
29
concentration can also be expected at MW-11 and TWN-18 because they are located just outside
of the plume. In addition, concentrations at MW-11 are less than 3 mg/1; and at TWN-18 are less
than 1 mg/L. Concentrations at MW-25 and MW-32 remained non-detect.
As discussed in Section 4.2.3, although the plume expanded in some areas and contracted in
others, the plume area is smaller than last quarter. Specifically, the plume boundary has
contracted away from TW4-21 due to the decrease in concentration at this well. Conversely,
small increases in concentration at MW-27 and MW-28 (located outside and west of the plume)
caused slight expansion of the western plume boundary; and an increase in concentration at MW-
11 caused slight downgradient expansion of the southern plume boundary towards MW-11.
MW-27, located west of TWN-2; TWN-20, located west ofTWN-7; and TWN-18, located north
of TWN-3, bound the nitrate plume to the west and north. During the second quarter of 2021,
TWN-20 was installed west of TWN-7 because TWN-7 no longer bounded the plume to the west
(see Figure 1-1 under Tab I). In addition, the southernmost (down.gradient) boundary of the
plume remains between MW-30/MW-31 and MW-5/MW-1 l. Nitrate concentrations at MW-5
(adjacent to MW-11) and MW-11 have historically been low (typically< 1 mg/L) or non-detect
for nitrate; however, since 2021, nitrate at MW-11 has occasionally exceeded 1 mg/Land was
detected at 2.9 mg/L this quarter (See Table 5). The nitrate concentrations at MW-11 are
consistent with the relative stability of the downgradient margin of the plume; however, the
recent increases at MW-11 suggest that downgradient migration is still occurring but at a low
rate. MW-25, MW-26, MW-32, TW4-16, TW4-19, TW4-21, TW4-25, TW4-39, TWN-1 and
TWN-4 bound the nitrate plume to the east.
Although short-term fluctuations have occurred, nitrate concentrations in MW-30 and MW-31
have been relatively stable, demonstrating that plume migration is minimal or absent. Nitrate
concentrations increased slightly at both MW-30 and MW-31. Nitrate in MW-30 increased from
approximately 17.6 mg/L to 17.9 mg/L; and nitrate in MW-31 increased from 16.9 mg/L to 17
mg/L. Based on the concentration data at MW-5, MW-11, MW-30, and MW-31, the nitrate
plume is under control; although, as discussed above, recent increases in nitrate at down.gradient
well MW-11 suggest that slow, down.gradient migration is still occurring.
Chloride is increasing at MW-31 and at MW-30, but at a lower rate. These increases are
consistent with continuing down.gradient migration of the elevated chloride associated with the
nitrate plume. The increasing chloride and relatively stable nitrate at both wells suggests a
natural attenuation process that is affecting nitrate but not chloride. A likely process that would
degrade nitrate but leave chloride unaffected is reduction of nitrate by pyrite. The likelihood of
this process in the perched zone is discussed in HGC, December 7 2012; Investigation of Pyrite
in the Perched Zone, White Mesa Uranium Mill Site, Blanding, Utah. A more detailed discussion
is presented in HGC, December 11, 2017; Nitrate Corrective Action Comprehensive Monitoring
Evaluation (CACME) Report, White Mesa Uranium Mill Near Blanding, Utah.
Nitrate mass within the plume boundary has been calculated on a quarterly basis beginning with
the first quarter of 2013. Calculated mass within the plume is expected to be impacted by factors
that include pumping, natural attenuation, redistribution of nitrate within the plume, and changes
in saturated thickness.
30
Nitrate mass removal by pumping and natural attenuation ( expected to result primarily from
pyrite oxidation/nitrate reduction) act to lower nitrate mass within the plume. Reductions in
saturated thickness that are not accompanied by increases in concentration will also reduce
nitrate mass within the plume.
Changes resulting from redistribution of nitrate within the plume are expected to result in both
increases and decreases in concentrations at wells within the plume and therefore increases and
decreases in mass estimates based on those concentrations, thus generating 'noise' in the mass
estimates. Furthermore, because the sum of sampling and analytical error is typically about 20%,
changes in the mass estimates from quarter to quarter of up to 20% could result from typical
sampling and analytical error alone. Longer-term analyses of the mass estimates that minimize
the impact of these quarter to quarter variations are expected to provide useful information on
plume mass trends. Over the long term, nitrate mass estimates are expected to trend downward as
a result of direct removal by pumping and through natural attenuation.
As specified in the CAP, once eight quarters of data were collected (starting with the first quarter
of 2013 ), a regression trend line was to be applied to the quarterly mass estimates and evaluated.
The trend line was to be updated quarterly and reevaluated as additional quarters of data were
collected. As the fourth quarter of 2014 constituted the eighth quarter as specified in the CAP,
the mass estimates were plotted, and a regression line was fitted to the data and evaluated. The
regression line was updated this quarter as shown in Figure M.1 of Tab M. The fitted line shows
a decreasing trend in the mass estimates.
During the current quarter, a total of approximately 64 lb. of nitrate was removed by the
chloroform pumping wells and by nitrate pumping wells TW4-22, TW4-24, TW4-25, and TWN-
2. Of the 64 lb. removed during the current quarter, approximately 39 lb. (or 61 %) was removed
by the nitrate pumping wells.
The baseline nitrate (nitrate+nitrite as N) plume mass calculated as specified in the CAP (based
on second quarter, 2010 data) was approximately 43,700 lb. The mass estimate for the current
quarter (27,014 lb.) is smaller than the mass estimate for the previous quarter (29,852 lb) by
2,838 lb. or nearly 10 %. The current quarter's estimate is smaller than the baseline estimate by
approximately 16,686 lb. The quarterly difference is attributable primarily to the decrease in
plume area caused by the reduction in concentration at TW4-21 and shrinkage of the plume away
from TW4-21. Although the concentration at bounding well MW-28 increased slightly this
quarter, MW-28 remains outside the plume.
Nitrate concentrations outside the nitrate plume are typically greater than 10 mg/L at a few
locations: TW4-12 (13.8 last quarter dropping to 4.7 mg/L this quarter); TW4-26 (10.4 mg/L);
TW4-27 (18.1 mg/L); and TW4-28 (16.6 mg/L). In the past concentrations at TW4-10 and TW4-
38 typically exceeded 10 mg/L. However, TW4-10 dropped below 10 mg/L during the first
quarter of 2019; and TW4-38 dropped below 10 mg/L during the first quarter of 2018. In
addition, TW 4-12 remained below 10 mg/L between the second quarter of 2019 and first quarter
of 2022. Concentrations at TW 4-18 have also occasionally exceeded 10 mg/L. Each of these
wells is located southeast of the nitrate plume as defined in the CAP and is separated from the
plume by a well or wells where nitrate concentrations are either non-detect, or, if detected, are
31
less than 10 mg/L. The nitrate concentrations at all of the above wells except TW4-12 are within
20% of last quarter's concentrations.
Since 2010, nitrate concentrations at TW 4-10 and TW 4-18 have been above and below 10 mg/L.
Concentrations were below 10 mg/L between the first quarter of 2011 and second quarter of
2013, and mostly close to or above 10 mg/L between the second quarter of 2013 and third
quarter of 2015. However, concentrations at TW4-18 have been below 10 mg/L since the third
quarter of 2015 and (as discussed above) the concentration at TW4-10 dropped below 10 mg/L
during the first quarter of 2019. Concentrations at nearby well TW4-5 have exceeded 10 mg/L
only twice since 2010, and concentrations at nearby wells TW4-3 and TW4-9 have remained
below 10 mg/L. Nitrate at TW4-5, TW4-10, and TW4-18 is associated with the chloroform
plume, and is within the capture zone of the chloroform pumping system. Elevated nitrate at
TW4-12, TW4-26, TW4-27, TW4-28, and TW4-38 is likely related to former cattle ranching
operations at the site. Elevated nitrate at relatively recently installed well MW-38 and at MW-20
(far cross-gradient and far downgradient, respectively, of the tailings management system at the
site) is also likely related to former cattle ranching operations.
Increases in both nitrate and chloride concentrations at wells near the northern wildlife ponds
(for example TW 4-18) were anticipated as a result of reduced dilution caused by cessation of
water delivery to the northern wildlife ponds. However, decreasing nitrate concentrations at
TW4-10 and TW4-18 from the first through third quarters of 2014 after previously increasing
trends (interrupted in the first quarter of 2014) suggested that conditions in this area had
stabilized. The temporary increase in nitrate concentration at TW 4-18 in the third quarter of 2015
and the generally increased nitrate at TW 4-5 and TW 4-10 during the three quarters following the
second quarter of 2015 suggested the continuing impact of reduced wildlife pond recharge on
downgradient wells. However, since the first quarter of 2016, concentrations at TW4-5, TW4-10
and TW 4-18 have generally been stable to decreasing.
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 northern wildlife 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 was expected to increase many
constituent concentrations within the plumes while reducing hydraulic gradients and rates of
plume migration. Reduced recharge and decay of the groundwater mound associated with the
southern wildlife pond is also expected to have an impact on water levels and concentrations at
wells within and marginal to the downgradient (southern) extremity of the chloroform plume.
The net impact of reduced wildlife pond recharge is expected to be beneficial even though
temporarily higher concentrations were also expected until continued mass reduction via
pumping and natural attenuation ultimately reduces concentrations. Temporary increases in
nitrate concentrations are judged less important than reduced nitrate migration rates. The actual
impacts of reduced recharge on concentrations and migration rates will be defined by continued
monitoring.
32
Nitrate mass removal from the perched zone was increased substantially by the start-up of nitrate
pumping wells TW4-22, TW4-24, TW4-25, and TWN-2 during the first quarter of 2013.
Continued operation of these wells is therefore recommended. Pumping these wells, regardless
of any short-term fluctuations in concentrations detected at the wells, helps to reduce
downgradient nitrate migration by removing nitrate mass and reducing average hydraulic
gradients, thereby allowing natural attenuation to be more effective. Continued operation of the
nitrate pumping system is expected to eventually reduce nitrate concentrations within the plume
and to further reduce or halt downgradient nitrate migration.
8.0 ELECTRONIC DATA FILES AND FORMAT
EFRI has provided to the Director an electronic copy of all laboratory results for groundwater
quality monitoring conducted under the nitrate contaminant investigation during the quarter, in
Comma Separated Values ("CSV") format. A copy of the transmittal e-mail is included under
Tab L.
33
9.0 SIGNATURE AND CERTIFICATION
This document was prepared by Energy Fuels Resources (USA) Inc.
Energy Fuels Resources (USA) Inc.
By:
Scott A. Bakken
Vice President, Regulatory Affairs
34
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 Bakken
Vice President, Regulatory Affairs
Energy Fuels Resources (USA) Inc.
35
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 Kriged Current Quarter Groundwater Contour Map, Capture Zone Map, Capture Zone Details
Map, and Weekly, Monthly and Quarterly Depth to Water Data
Tab D Kriged Previous Quarter Groundwater Contour Map
Tab E Hydrographs of Groundwater Elevations over Time for Nitrate Monitoring Wells
Tab F Depths to Groundwater and Elevations over Time for Nitrate Monitoring Wells
Tab G Laboratory Analytical Reports
Tab H Quality Assurance and Data Validation Tables
H-1 Field Data QA/QC Evaluation
H-2 Holding Time Evaluation
H-3 Analytical Method Check
H-4 Reporting Limit Evaluation
H-5 QA/QC Evaluation for Sample Duplicates
H-6 QC Control Limits for Analyses and Blanks
H-7 Receipt Temperature Evaluation
H-8 Rinsate Evaluation
Tab I Kriged Current Quarter Isoconcentration Maps
Tab J Analyte Concentration Data over Time
Tab K Concentration Trend Graphs
Tab L CSV Transmittal Letter
Tab M Residual Mass Estimate Analysis Figure
Tables
Table 1
Summary of Well Sampling and Constituents for the Period
Sample Collection
Well Date Date of Lab Report
Piezometer 01 10/25/2022 11/17/2022
Piezometer 02 10/25/2022 11/17/2022
Piezometer 03A 10/25/2022 11/17/2022
TWN-01 10/25/2022 11/17/2022
TWN-02 10/25/2022 11/17/2022
TWN-03 10/26/2022 11/17/2022
TWN-04 10/25/2022 11/17/2022
TWN-07 10/26/2022 11/17/2022
TWN-18 10/25/2022 11/17/2022
TWN-18R 10/25/2022 11/17/2022
TWN-20 10/26/2022 11/17/2022
TWN-21 10/26/2022 11/17/2022
TW4-22 11/30/2022 12/16/2022
TW4-24 11/30/2022 12/16/2022
TW4-25 11/30/2022 12/16/2022
TWN-60 10/26/2022 11/17/2022
TW4-60 11/30/2022 12/16/2022
TWN-65 10/26/2022 11/17/2022
Note: All wells were sampled for Nitrate and Chloride.
Multiple dates shown for a single laboratory depict resubmission dates for the data. Resubmissions were required to correct reporting errors.
Dates in Italics are the original laboratory submission dates.
TWN-60 is a DI Field Blank.
TWN-65 is a duplicate of TWN-20
TW4-60 is the chloroform program DI Field Blank.
Continuously pumped well.
Quarter
2
Q4 2010
QI 2011
Q2 2011
Q3 2011
Q42011
QI 2012
_Q_2 2012
Q3 2012
Q4 2012
QI 2013
Q2 2013
Q3 2013
_Q4 2013
_Ql 2014
Q2 2014
_Q3 2014
Q42014
_QI 2015
Q2 2015
Q3 2015
Q4 2015
_QI 2016
_Q2 2016
_Q_3 2016
Q4 2016
QI 2017
Q2 2017
_Q_3 2017
Q4 2017
_QI 2018
_Q2 2018
_Q_3 2018
_Q_4 2018
QI 2019
_Q2 2019
Q3 2019
Q4 2019
QI 2020
_Q2 2020
Q3 2020
_Q4 2020
_Q_l 2021
MW-4
(lbs.)
3.20
3.76
2.93
3.51
3.49
3.82
3.62
3.72
3.82
3.16
2.51
2.51
2.97
3.08
2.74
2.45
2.31
2.67
3.67
1.28
3.58
3.68
3.91
3.66
3.30
3.48
3.19
2.94
3.65
4.67
3.92
3.94
3.63
3.81
4.71
4.07
3.74
3.59
5.33
4.28
3.48
3.52
3.60
MW-26
(lbs.)
0.3
0.4
0.2
0.1
0.5
0.8
0.4
0.6
0.5
0.4
0.4
0.4
0.4
0.3
0.4
0.3
0.1
0.2
0.5
0.2
0.3
0.2
0.23
0.21
0.22
0.18
0.17
0.20
0.36
0.23
0.35
0.20
0.60
0.39
0.41
0.57
0.62
0.18
0.24
0.62
0.08
0.87
0.08
Table 2
Nitrate Mass Removal Per Well Per Quarter
TW4-19 I TW4-20 I TW4-4 I TW4-22 I TW4-24
(lbs.) (lbs.) (lbs.) (lbs.) (lbs.)
5.8 1.7 4.7 NA NA
17.3 1.4 5.1 NA NA
64.5 1.4 4.3 NA NA
15.9 2.7 4.7 NA NA
3.5 3.9 5.4 NA NA
6.2 2.5 6.4 NA NA
0.7 5.0 6.0 NA NA
3.4 2.1 5.2 NA NA
3.6 2.0 4.7 NA NA
5.4 1.8 4.2 NA NA
14.1 1.4 3.6 8.1 43.4
5.6 1.6 3.4 10.7 37.1
48.4 1.4 3.8 6.3 72.8
15.8 1.6 3.9 9.4 75.2
4.1 1.2 3.6 11.2 60.4
3.3 0.9 3.0 9.5 63.4
4.1 0.6 3.1 8.5 56.2
7.8 1.0 3.8 11.0 53.2
4.3 1.3 2.4 12.7 26.7
0.6 0.9 3.6 9.1 16.6
11.3 1.4 3.5 13.3 14.0
10.0 0.8 3.1 II.I 26.6
15.28 1.23 3.21 6.36 24.30
1.31 1.48 3.36 12.92 13.17
9.08 1.15 3.02 11.33 14.86
8.76 1.23 1.79 12.14 26.49
10.23 1.36 1.35 14.02 34.16
0.22 1.02 1.37 13.99 17.58
1.05 1.31 1.29 13.56 18.55
0.34 1.06 1.32 15.89 28.04
7.89 1.13 1.18 12.47 36.31
0.46 1.16 0.96 14.07 14.89
2.25 0.85 0.78 9.82 14.99
0.21 1.04 0.77 15.27 32.56
6.38 0.82 1.01 15.69 32.04
7.53 1.08 1.24 16.15 14.74
0.28 1.17 0.77 14.95 16.54
0.44 0.68 0.78 12.02 28.83
8.16 0.78 0.55 11 .91 26.73
1.30 6.08 0.93 12.77 20.05
14.96 0.00 0.85 12.46 17.40
1.33 0.00 0.85 12.38 31.15
7.36 0.00 0.77 13.13 28.63
TW4-25
(lbs.)
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
7.5
6.4
6.9
6.4
2.3
1.3
1.6
0.9
8.6
0.9
1.7
1.7
0.81
1.01
1.56
1.02
0.02
0.83
1.27
1.26
2.18
1.12
0.75
0.61
0.48
0.60
0.40
0.60
0.43
0.64
0.70
1.18
2.30
TWN-021 TW4-01 I TW4-02 I TW4-11 I TW4-21 I TW4-37 I TW4-39 I TW4-40 I TW4-41
(lbs.) (lbs.) (lbs.) (lbs.) (lbs.) (lbs.) (lbs.) (lbs.) (lbs.)
NA NA NA NA NA NA NA NA NA
NA NA NA NA NA NA NA NA NA
NA NA NA NA NA NA NA NA NA
NA NA NA NA NA NA NA NA NA
NA NA NA NA NA NA NA NA NA
NA NA NA NA NA NA NA NA NA
NA NA NA NA NA NA NA NA NA
NA NA NA NA NA NA NA NA NA
NA NA NA NA NA NA NA NA NA
NA NA NA NA NA NA NA NA NA
14.8 NA NA NA NA NA NA NA NA
23.9 NA NA NA NA NA NA NA NA
33.4 NA NA NA NA NA NA NA NA
46.3 NA NA NA NA NA NA NA NA
17.2 NA NA NA NA NA NA NA NA
17.8 NA NA NA NA NA NA NA NA
16.4 NA NA NA NA NA NA NA NA
28.0 NA NA NA NA NA NA NA NA
19.2 1.45 1.07 0.72 NA NA NA NA NA
21.4 1.22 0.79 0.37 3.4 8.6 NA NA NA
20.2 1.24 0.68 0.29 15.4 31.9 NA NA NA
17.5 0.3 0.9 0.3 16.1 32.3 NA NA NA
34.33 0.02 0.93 0.22 15.29 26.45 NA NA NA
19.24 0.02 1.15 0.25 14.46 27.76 NA NA NA
12.47 0.72 0.59 0.22 15.20 27.42 NA NA NA
12.14 0.10 1.00 0.23 14.68 22.20 0.62 NA NA
10.35 0.63 0.79 0.20 8.02 26.16 5.54 NA NA
8.88 0.87 0.77 0.19 4.85 24.26 2.15 NA NA
9.31 0.73 0.82 0.18 18.24 20.81 2.23 NA NA
10.37 0.68 0.47 0.17 17.84 22.35 1.51 NA NA
7.09 0.51 0.40 0.17 15.54 21.22 1.65 NA NA
7.22 0.40 0.47 0.16 13.73 19.96 1.38 NA 4.02
6.48 0.35 0.60 0.13 0.22 16.42 1.69 NA 2.30
6.30 0.38 0.45 0.14 15.43 17.38 1.97 NA 1.78
7.10 0.40 0.53 0.15 9.25 19.49 0.85 NA 1.79
16.35 0.11 0.51 0.15 15.61 16.91 2.42 2.4 1.26
8.01 0.13 0.56 0.12 13.26 14.55 0.54 3.3 1.25
5.17 0.30 0.40 0.12 5.55 14.20 0.41 2.6 1.08
4.44 0.38 0.67 0.1 I 7.95 15.48 0.29 2.5 0.88
4.04 0.04 0.43 0.13 14.26 15.39 1.56 2.4 0.98
3.05 0.18 0.39 0.11 10.46 13.95 0.80 2.1 0.75
2.57 0.33 0.28 0.08 14.56 14.69 2.75 1.7 0.93
3.00 0.21 0.36 0.13 12.33 13.45 0.69 1.5 0.72
Qtr.
Totals
(lbs.)
15.69
27.97
73.30
27.01
16.82
19.71
15.86
15.03
14.67
14.92
95.73
91.71
176.53
162.07
103.14
101.87
92.99
108.57
82.61
68.86
118.63
124.50
132.55
99.98
101.12
106.06
116.19
80.12
93.37
106.21
111.99
84.14
61.86
98.49
101.08
101.72
80.19
76.97
86.86
85.95
81.69
89.15
88.22
Table 2
Nitrate Mass Removal Per Well Per 4 :)uarter
MW-4 MW-26 TW4-19 TW4-20 TW4-4 TW4-22 TW4-24 TW4-25 TWN-02 TW4-01 TW4-02 TW4-11 TW4-21 TW4-37 TW4-39 TW4-40 TW4-41 Qtr.
Quarter (lbs.) (lbs.) (lbs.) (lbs.) (lbs.) (lbs.) (lbs.) (lbs.) (lbs.) (lbs.) (lbs.) (lbs.) (lbs.) (lbs.) (lbs.) (lbs.) (lbs.) Totals
(lbs.)
Q2 2021 5.04 0.20 5.10 0.00 1.01 17.06 21.78 1.08 2.62 0.05 0.39 0.12 17.43 13.00 3.29 2.1 0.82 91.09
Q3 2021 2.87 0.16 8.79 0.00 0.40 6.52 11.88 0.55 2.57 0.10 0.21 0.08 10.05 10.76 0.71 0.7 0.43 56.81
Q4 2021 3.89 0.13 11.41 0.00 0.70 13.01 35.12 0.73 1.85 0.32 0.36 0.09 14.72 12.18 0.83 1.2 0.70 97.29
Ql 2022 3.86 0.07 1.59 0.00 0.57 7.44 22.22 1.40 2.07 0.27 0.31 0.09 1.67 10.67 0.86 1.1 0.63 54.84
Q2 2022 3.04 0.05 1.44 0.00 0.57 8.44 14.70 0.75 1.87 0.01 0.30 0.07 6.81 9.8 1 2.35 0.8 0.55 51.61
03 2022 2.90 0.16 5.46 0.00 0.44 12.80 15.61 1.24 1.75 0.03 0.28 0.08 10.40 8.80 0.97 0.8 0.55 62.30
0 42022 3.12 0.08 4.11 0.00 0.48 12.80 23.10 1.17 1.82 0.26 0.38 0.08 1.67 11.15 2.56 0.9 0.59 64.26
Well
Totals 173.6 16.0 398.4 63.4 123.8 472.3 1182.0 73.0 488.5 12.7 18.3 5.6 354.3 559.6 40.6 26.3 22.0 4030.3
(pounds)
Table 3 Well Pumping Rates and Volumes
Pumping Well Volume of Water Pumped
Name During the Quarter (gals) Average Pump Rate (gpm)
MW-4 91487.4 4.0
MW-26 29411.4 16.2
TW4-19 137474.5 16.2
TW4-4 8777.0 16.0
TWN-2 15606.0 15.9
TW4-22 22398.4 16.1
TW4-24 100289.8 16.1
TW4-25 95056.0 11.2
TW4-0l 8450.8 12.8
TW4-02 12148.6 15.8
TW4-11 1442.4 15.3
TW4-21 94463.6 16.2
TW4-37 43251.9 17.9
TW4-39 39072.6 18.0
TW4-40 48263.2 18.0
TW4-41 11722.6 6.0
Table4
Quarterly Calculation of Nitrate Removed and Total Volume of Water Pumped
MW-4 MW-26
Total Total
Pumped Total Pumped Total Total Total Pumped Cone Cone Pumped Total Total
Quarter (gal) Cone (mg/L) Cone (ug/L) (liters) Total (ug) (grams) (pounds) (gal) (mg/L) (ug/L) (liters) Total (ug) (grams) (pounds)
Q3 2010 79859.1 4.80 4800 302266.7 1450880129 1450.9 3.20 63850.0 0.60 600 241672.3 145003350 145 0.32
Q42010 90042.2 5.00 5000 340809.7 1704048635 1704.0 3.76 60180.0 0.70 700 227781.3 159446910 159 0.35
Ql 2011 76247.6 4.60 4600 288597.2 1327546964 1327.5 2.93 55130.0 0.50 500 208667.1 104333525 104 0.23
Q2 2011 85849.3 4.90 4900 324939.6 1592204042 1592.2 3.51 55800.6 0.30 300 211205.3 6.34E+07 63 0.14
Q3 2011 85327.7 4.90 4900 322965.3 1582530188 1582.5 3.49 65618.0 0.90 900 248364.1 223527717 224 0.49
Q4 2011 89735.0 5.10 5100 339647.0 1732199573 1732.2 3.82 50191.3 2.00 2000 189974.1 379948141 380 0.84
Ql 2012 90376.4 4.80 4800 342074.7 1641958435 1642.0 3.62 31440.1 1.70 1700 119000.8 202301323.5 202 0.45
Q2 2012 90916.5 4.90 4900 344118.8 1686181940 1686.2 3.72 26701.2 2.50 2500 101064.1 252660294.3 253 0.56
Q3 2012 91607.0 5.00 5000 346732.5 1733662475 1733.7 3.82 25246.0 2.60 2600 95556.1 248445886 248 0.55
Q42012 78840.0 4.80 4800 298409.4 1432365120 1432.4 3.16 30797.0 1.46 1460 116566.6 170187301.7 170 0.38
Ql 2013 62943.7 4.78 4780 238241.9 1138796304 1138.8 2.51 22650.7 2.27 2270 85732.9 194613681.9 195 0.43
Q2 2013 71187.3 4.22 4220 269443.9 1137053387 1137.1 2.51 25343.4 2.11 2110 95924.8 202401262.6 202 0.45
Q32013 72898.8 4.89 4890 275922.0 1349258375 1349.3 2.97 25763.0 1.98 1980 97513.0 193075650.9 193 0.43
Q42013 70340.4 5.25 5250 266238.4 1397751674 1397.8 3.08 24207.6 1.38 1380 91625.8 126443557.1 126 0.28
Ql 2014 69833.8 4.70 4700 264320.9 1242308385 1242.3 2.74 23263.1 2.12 2120 88050.8 186667767 187 0.41
Q22014 71934.9 4.08 4080 272273.6 1110876274 1110.9 2.45 23757.5 1.42 1420 89922.1 127689435.3 128 0.28
Q3 2014 74788.2 3.70 3700 283073.3 1047371347 1047.4 2.31 24062.4 0.70 700 91076.2 63753328.8 64 0.14
Q42014 63093.0 5.07 5070 238807.0 1210751515 1210.8 2.67 21875.8 0.93 934 82799.9 77335109.4 77 0.17
Ql 2015 76454.3 5.75 5750 289379.5 1663932272 1663.9 3.67 24004.9 2.68 2680 90858.5 243500904.6 244 0.54
Q2 2015 60714.7 2.53 2530 229805.1 581407002.9 581.4 1.28 27804.6 0.85 845 105240.4 88928147.3 89 0.20
Q3 2015 89520.8 4.79 4790 338836.2 1623025532 1623.0 3.58 21042.0 1.75 1750 79644.0 139376947.5 139 0.31
Q42015 99633.4 4.43 4430 377112.4 1670608016 1670.6 3.68 19355.6 1.11 1110 73260.9 81319650.1 81 0.18
Ql 2016 90882.1 5.15 5150 343988.7 1771542055 1771.5 3.91 19150.8 1.45 1450 72485.8 105104378.1 105 0.23
Q2 2016 96540.5 4.54 4540 365405.8 1658942298 1658.9 3.66 22105.7 1.12 1120 83670.1 93710483.4 94 0.21
Q3 2016 79786.4 4.95 4950 301991.5 1494858044 1494.9 3.30 17149.5 1.57 1570 64910.9 101910046.3 102 0.22
Q4 2016 85414.0 4.88 4880 323292.0 1577664911 1577.7 3.48 18541.6 1.18 1180 70180.0 82812348.1 83 0.18
Ql 2017 76642.3 4.99 4990 290091.1 1447554616 1447.6 3.19 26107.0 0.768 768 98815.0 75889916.2 76 0.17
Q2 2017 72299.8 4.88 4880 273654.7 1335435146 1335.4 2.94 25921.8 0.922 922 98114.0 90461120.0 90 0.20
Q3 2017 95349.3 4.59 4590 360897.1 1656517691 1656.5 3.65 27489.9 1.56 1560 104049.3 162316863.5 162 0.36
Q4 2017 106679.8 5.25 5250 403783.0 2119860976 2119.9 4.67 26445.8 1.04 1040 100097.4 104101247.1 104 0.23
Ql 2018 105060.4 4.47 4470 397653.6 1777511655 1777.5 3.92 27004.7 1.57 1570 102212.8 160474079.5 160 0.35
Q2 2018 101786.2 4.64 4640 385260.8 1787609959 1787.6 3.94 26654.7 0.90 901 100888.0 90900123.6 91 0.20
Q3 2018 95480.5 4.55 4550 361393.8 1644341817.5 1644.3 3.63 25536.1 2.80 2800 96654.1 270631587.8 271 0.60
Q4 2018 102844.8 4.44 4440 389267.5 1728347833.9 1728.3 3.81 23791.3 1.96 1960 90050.1 176498138.2 176 0.39
Ql 2019 111746.9 5.05 5050 422961.9 2135957801.0 2136.0 4.71 26798.5 1.85 1850 101432.3 187649796.6 188 0.41
Q2 2019 94540.7 5.16 5160 357836.5 1846436595.4 1846.4 4.07 24050.2 2.83 2830 91030.0 257614919.8 258 0.57
Q3 2019 95517.8 4.69 4690 361534.9 1695598554.4 1695.6 3.74 24181.1 3.08 3080 91525.5 281898427.6 282 0.62
Q4 2019 99220.8 4.34 4340 375550.9 1629890816.6 1629.9 3.59 22384.8 0.977 977 84726.5 82777759.2 83 0.18
Ql 2020 102597.0 6.22 6220 388329.6 2415410391.9 2415.4 5.33 24107.0 1.17 1170 91245.0 106756644.2 107 0.24
It;
Table4
Quarterly Calculation of Nitrate Removed and Total Volume of Water Pumped
MW-4 MW-26
Total Total
Pumped Total Pumped Total Total Total Pumped Cone Cone Pumped Total Total
Quarter (gal) Cone(mg/L) Cone (ug/L) (liters) Total (ug) (grams) (pounds) (gal) (mg/L) (ug/L) (liters) Total (ug) (grams) (pounds)
Q22020 101850.7 5.04 5040 385504.9 1942944502.7 1942.9 4.28 25418.4 2.93 2930 96208.6 281891326.9 282 0.62
Q3 2020 84607.8 4.93 4930 320240.6 1578786151.6 1578.8 3.48 23663.7 0.416 416 89567.1 37259915.5 37 0.08
Q42020 91258.6 4.62 4620 345413.8 1595811760.6 1595.8 3.52 28934.5 3.620 3620 109517.1 396451838. 7 396 0.87
Ql 2021 93486.7 4.61 4610 353847.3 1631235928.8 1631.2 3.60 27898.0 0.349 349 105593.9 36852281.6 37 0.08
Q2 2021 93252.4 6.48 6480 352960.3 2287182964.3 2287.2 5.04 29124.1 0.810 810 110234.7 89290122.0 89 0.20
Q32021 89693.5 3.83 3830 339489.8 1300246017 .5 1300.2 2.87 27945.6 0.671 671 105774.1 70974418.4 71 0.16
Q42021 95091.4 4.90 4900 359920.8 1763611908.2 1763.6 3.89 30045.3 0.518 518 113721.5 58907716.5 59 0.13
Ql 2022 96291.3 4.80 4800 364462.6 1749420338.4 1749.4 3.86 29113.3 0.300 300 110193.8 33058152.2 33 0.07
Q2 2022 93554.5 3.90 3900 354103.9 1381005047.0 1381.0 3.04 29385.9 0.220 220 111225.6 24469638.9 24 0.05
Q3 2022 82718.6 4.20 4200 313089.9 1314977584.2 1315.0 2.90 28531.3 0.662 662 107991.0 71490022.5 71 0.16
Q42022 91487.4 4.09 4090 346279.8 1416284573.6 1416.3 3.12 29411.4 0.337 337 111322.1 37515564.2 38 0.08
Totals Since
Q3 2010 4367826.3 173.6 1464976.82 16.0
Table4
Quarterly Calculation of Nitrate Removed and Total Volume of Water Pumped
TW4-19 TW4-20
Total
Total Pumped Cone Cone Pumped Total Total Total Pumped Cone Cone Total Pumped Total
Quarter (gal) (mg/L) (ug/L) (liters) Total (ug) (grams) (pounds) (gal) (mg/L) (ug/L) (liters) Total (ug) Total (grams) (pounds)
Q3 2010 116899.2 5.90 5900 442463.5 2610534485 2611 5.76 39098.3 5.30 5300 147987.1 784331447.2 784 1.73
Q42010 767970.5 2.70 2700 2906768.3 7848274525 7848 17.30 36752.5 4.60 4600 139108.2 639897777.5 640 1.41
Ql 2011 454607.9 17.00 17000 1720690.9 29251745326 29252 64.49 37187.5 4.40 4400 140754.7 619320625 619 1.37
Q2 2011 159238.9 12.00 12000 602719.2 7232630838 7233 15.95 67907.7 4.80 4800 257030.6 1233747094 1234 2.72
Q3 2011 141542.6 3.00 3000 535738.7 1607216223 1607 3.54 72311.2 6.50 6500 273697.9 1779036298 1779 3.92
Q42011 147647.2 5.00 5000 558844.7 2794223260 2794 6.16 72089.3 4.20 4200 272858.0 1146003602 1146 2.53
Ql 2012 148747.0 0.60 600 563007.4 337804437 338 0.74 76306.0 7.90 7900 288818.2 2281663859 2282 5.03
Q2 2012 172082.0 2.40 2400 651330.5 1563193161 1563 3.45 22956.4 11.00 11000 86890.1 955790963.1 956 2.11
Q3 2012 171345.0 2.50 2500 648540.8 1621352063 1621 3.57 22025.0 10.80 10800 83364.6 900337950 900 1.98
Q4 2012 156653.0 4.10 4100 592931.6 2431019581 2431 5.36 20114.0 11.00 11000 76131.5 837446390 837 1.85
Q12013 210908.0 7.99 7990 798286.8 6378311372 6378 14.06 18177.0 9.07 9070 68799.9 624015501.2 624 1.38
Q2 2013 226224.0 2.95 2950 856257.8 2525960628 2526 5.57 20252.4 9.76 9760 76655.3 748156059.8 748 1.65
Q3 2013 329460.1 17.60 17600 1247006.5 21947314022 21947 48.39 19731.0 8.65 8650 74681.8 645997872.8 646 1.42
Q4 2013 403974.0 4.70 4700 1529041.6 7186495473 7186 15.84 19280.2 9.64 9640 72975.6 703484369.5 703 1.55
Ql 2014 304851.0 1.62 1620 1153861.0 1869254877 1869 4.12 18781.6 7.56 7560 71088.4 537427971.4 537 1.18
Q2 2014 297660.0 1.34 1340 1126643.1 1509701754 1510 3.33 18462.4 5.95 5950 69880.2 415787094.8 416 0.92
Q3 2014 309742.0 1.60 1600 1172373.5 1875797552 1876 4.14 17237.9 4.30 4300 65245.5 280555441.5 281 0.62
Q42014 198331.0 4.72 4720 750682.8 3543222981 3543 7.81 16341.8 7.67 7670 61853.7 474417978.7 474 1.05
Ql 2015 60553.0 8.56 8560 229193.1 1961892979 1962 4.33 15744.7 9.80 9800 59593.7 584018157.1 584 1.29
Q2 2015 75102.8 0.92 916 284264.1 260385913.8 260 0.57 18754.1 5.76 5760 70984.3 408869386.6 409 0.90
Q3 2015 116503.9 11.60 11600 440967.3 5115220233 5115 11.28 17657.3 9.27 9270 66832.9 619540802.2 620 1.37
Q4 2015 112767.7 10.60 10600 426825.7 4524352892 4524 9.97 15547.4 6.23 6230 58846.9 366616243.1 367 0.81
Ql 2016 116597.0 15.70 15700 441319.6 6928718427 6929 15.28 14353.5 10.30 10300 54328.0 559578374.3 560 1.23
Q2 2016 123768.0 1.27 1270 468461.9 594946587.6 595 1.31 15818.3 11.20 11200 59872.3 670569373.6 671 1.48
Q3 2016 103609.0 10.50 10500 392160.1 4117680683 4118 9.08 12186.6 11.30 11300 46126.3 521226975.3 521 1.15
Q4 2016 104919.4 10.00 10000 397119.9 3971199290 3971 8.76 12879.6 11.40 11400 48749.3 555741860.4 556 1.23
Ql 2017 110416.7 11.10 11100 417927.2 4638992025 4639 10.23 13552.8 12.00 12000 51297.3 615568176 616 1.36
Q2 2017 109943.0 0.24 243 416134.3 101120624 101 0.22 12475.3 9.76 9760 47219.0 460857542.5 461 1.02
Q3 2017 112626.4 1.12 1120 426290.9 477445834.9 477 1.05 14556.8 10.80 10800 55097.5 595052870.4 595 1.31
Q42017 108891.2 0.38 377 412153.2 155381753.4 155 0.34 14271.0 8.91 8910 54015.7 481280198.9 481 1.06
Ql 2018 109856.3 8.61 8610 415806.1 3580090482 3580 7.89 14258.4 9.50 9500 53968.0 512696418 513 1.13
Q2 2018 111271.4 0.49 494 421162.2 208054151.0 208 0.46 13367.6 10.40 10400 50596.4 526202206.4 526 1.16
Q3 2018 105821.8 2.55 2550 400535.5 1021365558.2 1021 2.25 12443.6 8.14 8140 47099.0 383385763.5 383 0.85
Q4 2018 107197.4 0.23 233 405742.2 94537923.0 95 0.21 12841.1 9.72 9720 48603.6 472426637.2 472 1.04
Ql 2019 116132.8 6.58 6580 439562.6 2892322223.8 2892 6.38 14623.9 6.70 6700 55351.3 370853777.7 371 0.82
Q2 2019 100704.0 8.96 8960 381164.6 3415235174.4 3415 . 7.53 13439.2 9.59 9590 50867.4 487818097.5 488 1.08
Q3 2019 101026.8 0.33 332 382386.4 126952297 .4 127 0.28 13787.0 10.20 10200 52183.8 532274709.0 532 1.17
Q4 2019 98806.8 0.54 535 373983.7 200081299.8 200 0.44 8317.7 9.75 9750 31482.5 306953952.3 307 0.68
Ql 2020 96857.9 10.10 10100 366607.2 3702732230.2 3703 8.16 9505.1 9.81 9810 35976.6 352930585.8 353 0.78
Table4
Quarterly Calculation of Nitrate Removed and Total Volume of Water Pumped
TW4-19 TW4-20
Total
Total Pumped Cone Cone Pumped Total Total Total Pumped Cone Cone Total Pumped Total
Quarter (gal) (mg/L) (ug/L) (liters) Total (ug) (grams) (pounds) (gal) (mg/L) (ug/L) (liters) Total (ug) Total (grams) (pounds)
Q2 2020 136619.7 1.14 1140 517105.6 589500343.5 590 1.30 100713.8 7.23 7230 381201.6 2756087708.6 2756 6.08
Q3 2020 154514.4 11.60 11600 584837.0 6784109246.4 6784 14.96 12476.2 Well collapsed and not sampled
Q42020 144512.0 1.10 1100 546977.9 601675712.0 602 1.33 Well collapsed and not sampled
Ql 2021 133462.3 6.61 6610 505154.8 3339073264.4 3339 7.36 Well collapsed and not sampled
Q2 2021 151242.8 4.04 4040 572454.0 2312714151.9 2313 5.10 Well collapsed and not sampled
Q3 2021 157632.4 6.68 6680 596638.6 3985546075.1 3986 8.79 Well collapsed and not sampled
Q4 2021 124359.9 11.00 11000 470702.2 5177724436.5 5178 11.41 Well collapsed and not sampled
Ql 2022 112209.2 1.70 1700 424711.8 722010097.4 722 1.59 Well collapsed and not sampled
Q2 2022 123246.5 1.40 1400 466488.1 653083362.5 653 1.44 Well collapsed and not sampled
Q3 2022 137486.6 4.76 4760 520386.7 2477040717.2 2477 5.46 Well collapsed and not sampled
Q42022 137474.5 3.58 3580 520340.8 1862820039.8 1863 4.11 Well collapsed and not sampled
Totals Since
Q3 2010 8434016.99 398.4 1018583.08 63.4
Table4
Quarterly Calculation of Nitrate Removed and Total Volume of Water Pumped
TW4-4 TW4-22
Total
Total Pumped Cone Cone Total Pumped Total Total Pumped Cone Cone Total Pumped Total Total
Quarter (gal) (mg/L) (ug/L) (liters) Total (ug) (grams) (pounds) (gal) (mg/L) (ug/L) (liters) Total (ug) (grams) (pounds)
Q3 2010 76916.8 7.30 7300 291130.1 2125249642.4 2125.25 4.69 NA NA NA NA NA NA NA
Q42010 86872.1 7.10 7100 328810.9 2334557379.4 2334.56 5.15 NA NA NA NA NA NA NA
Ql 2011 73360.0 7.00 7000 277667.6 1943673200.0 1943.67 4.29 NA NA NA NA NA NA NA
Q2 2011 80334.6 7.00 7000 304066.5 2128465227.0 2128.47 4.69 NA NA NA NA NA NA NA
Q3 2011 97535.0 6.60 6600 369170.0 2436521835.0 2436.52 5.37 NA NA NA NA NA NA NA
Q42011 109043.5 7.00 7000 412729.6 2889107532.5 2889.11 6.37 NA NA NA NA NA NA NA
Ql 2012 101616.8 7.10 7100 384619.6 2730799074.8 2730.80 6.02 NA NA NA NA NA NA NA
Q2 2012 87759.1 7.10 7100 332168.2 2358394173.9 2358.39 5.20 NA NA NA NA NA NA NA
Q3 2012 80006.0 7.10 7100 302822.7 2150041241.0 2150.04 4.74 NA NA NA NA NA NA NA
Q4 2012 71596.0 7.00 7000 270990.9 1896936020.0 1896.94 4.18 NA NA NA NA NA NA NA
Ql 2013 58716.8 7.36 7360 222243.l 1635709127.7 1635.71 3.61 16677.4 58.0 58000.0 63124.0 3661189622.0 3661.2 8.07
Q2 2013 65603.4 6.30 6300 248308.9 156434587 4. 7 1564.35 3.45 25523.2 50.2 50200.0 96605.3 4849586662.4 4849.6 10.69
Q3 2013 63515.4 7.22 7220 240405.8 1735729796.6 1735.73 3.83 25592.9 29.7 29700.0 96869.1 2877013057.1 2877.0 6.34
Q4 2013 60233.6 7.84 7840 227984.2 1787395939.8 1787.40 3.94 24952.2 45.2 45200.0 94444.1 4268872280.4 4268.9 9.41
Ql 2014 58992.9 7.28 7280 223288.1 1625537560.9 1625.54 3.58 24532.0 54.6 54600.0 92853.6 5069807652.0 5069.8 11.18
Q2 2014 60235.3 5.91 5910 227990.6 1347424508.1 1347.42 2.97 24193.9 47.2 47200.0 91573.9 4322288622.8 4322.3 9.53
Q3 2014 69229.4 5.30 5300 262033.3 1388776378. 7 1388.78 3.06 24610.9 41.5 41500.0 93152.3 3865818644.8 3865.8 8.52
Q42014 64422.6 7.02 7020 243839.5 1711753577.8 1711.75 3.77 23956.9 54.9 54900.0 90676.9 4978159970.9 4978.2 10.97
Ql 2015 36941.3 7.70 7700 139822.8 1076635717.9 1076.64 2.37 22046.9 69.2 69200.0 83447.5 5774568141.8 5774.6 12.73
Q2 2015 68162.8 6.33 6330 257996.2 1633115933.3 1633.12 3.60 23191.6 47.1 47100.0 87780.2 4134447702.6 4134.4 9.11
Q3 2015 64333.0 6.45 6450 243500.4 1570577612.3 1570.58 3.46 24619.9 64.7 64700.0 93186.3 6029155001.1 6029.2 13.29
Q4 2015 59235.1 6.27 6270 224204.9 1405764431.4 1405.76 3.10 23657.6 56.1 56100.0 89544.0 5023419297.6 5023.4 11.07
Ql 2016 57274.0 6.71 6710 216782.1 1454607823.9 1454.61 3.21 24517.8 31.1 31100.0 92799.9 2886076050.3 2886.1 6.36
Q2 2016 61378.0 6.56 6560 232315.7 1523991188.8 1523.99 3.36 26506.3 58.4 58400.0 100326.3 5859058577.2 5859.1 12.92
Q3 2016 50104.2 7.22 7220 189644.4 1369232546.3 1369.23 3.02 22144.1 61.3 61300.0 83815.4 5137885154.1 5137.9 11.33
Q4 2016 31656.0 6.77 6770 119818.0 811167589.2 811.17 1.79 23646.8 61.5 61500.0 89503.1 5504442987.0 5504.4 12.14
Ql 2017 23526.8 6.87 6870 89048.9 611766204.1 611.77 1.35 24066.2 69.8 69800.0 91090.6 6358121576.6 6358.1 14.02
Q2 2017 23244.9 7.06 7060 87981.9 621152542.3 621.15 1.37 23685.0 70.8 70800.0 89647.7 6347058930.0 6347.1 13.99
Q3 2017 23937.3 6.47 6470 90602.7 586199342.8 586.20 1.29 24583.2 66.1 66100.0 93047.4 6150433933.2 6150.4 13.56
Q42017 22900.6 6.90 6900 86678.8 598083519.9 598.08 1.32 23779.6 80.1 80100.0 90005.8 7209463458.6 7209.5 15.89
Ql 2018 23103.4 6.12 6120 87446.4 535171778.3 535.17 1.18 23982.8 62.3 62300.0 90774.9 5655276145.4 5655.3 12.47
Q2 2018 18137.0 6.34 6340 68648.5 435231775.3 435.23 0.96 23256.6 72.5 72500.0 88026.2 6381901747.5 6381.9 14.07
Q3 2018 15366.0 6.10 6100 58160.3 354777891.0 354.78 0.78 21248.7 55.4 55400.0 80426.3 4455618654.3 4455.6 9.82
Q42018 15420.2 6.02 6020 58365.5 351360051.1 351.36 0.77 24171.0 75.7 75700.0 91487.2 6925583689.5 6925.6 15.27
Ql 2019 16655.0 7.26 7260 63039.2 457664410.5 457.66 1.01 26149.9 71.9 71900.0 98977.4 7116473010.9 7116.5 15.69
Q2 2019 14311.9 10.4 10400 54170.5 563373631.6 563.37 1.24 23073.1 83.9 83900.0 87331.7 7327128245.7 7327.1 16.15
Q3 2019 14520.0 6.32 6320 54958.2 347335824.0 347.34 0.77 24711.7 72.5 72500.0 93533.8 6781199376.3 6781.2 14.95
Q42019 14399.8 6.52 6520 54503.2 355361144.4 355.36 0.78 24052.5 59.9 59900.0 91038.7 5453218878.8 5453.2 12.02
Ql 2020 14439.2 4.58 4580 54652.4 250307863.8 250.31 0.55 24746.1 57.7 57700.0 93664.0 5404412136.5 5404.4 11.91
Table4
Quarterly Calculation of Nitrate Removed and Total Volume of Water Pumped
TW4-4 TW4-22
Total
Total Pumped Cone Cone Total Pumped Total Total Pumped Cone Cone Total Pumped Total Total
Quarter (gal) (mg/L) (ug/L) (liters) Total (ug) (grams) (pounds) (gal) (mg/L) (ug/L) (liters) Total (ug) (grams) (pounds)
Q2 2020 15347.0 7.26 7260 58088.4 421721747.7 421.72 0.93 25295.3 60.5 60500.0 95742.7 5792433985.3 5792.4 12.77
Q3 2020 14389.9 7.04 7040 54465.8 383439031.4 383.44 0.85 23050.6 64.8 64800.0 87246.5 5653574560.8 5653.6 12.46
Q42020 15061.5 6.77 6770 57007.8 385942653.7 385.94 0.85 22866.1 64.9 64900.0 86548.2 5616977433.7 5617.0 12.38
Ql 2021 13740.8 6.75 6750 52008.9 351060264.0 351.06 0.77 22605.6 69.6 69600.0 85562.2 5955128841.6 5955.1 13.13
Q2 2021 13425.7 9.02 9020 50816.3 458362796.0 458.36 1.01 22893.3 89.3 89300.0 86651.1 7737946846.7 7737.9 17.06
Q32021 12021.0 4.00 4000 45499.5 181997940.0 182.00 0.40 22272.5 35.1 35100.0 84301.4 2958979578.8 2959.0 6.52
Q42021 11401.1 7.32 7320 43153.2 315881156.8 315.88 0.70 22667.3 68.8 68800.0 85795.7 5902746258.4 5902.7 13.01
Ql 2022 10434.1 6.60 6600 39493.1 260654252.1 260.65 0.57 22083.6 40.4 40400.0 83586.4 3376891610.4 3376.9 7.44
Q2 2022 11463.2 6.00 6000 43388.2 260329272.0 260.33 0.57 22489.0 45.0 45000.0 85120.9 3830438925.0 3830.4 8.44
Q3 2022 7928.5 6.65 6650 30009.4 199562327 .1 199.56 0.44 21940.2 69.9 69900.0 83043.7 5804751624.3 5804.8 12.80
Q4 2022 8777.0 6.59 6590 33220.9 218926027 .6 218.93 0.48 22398.4 62.0 62000.0 83043.7 5804751624.3 5804.8 12.80
Totals Since
Q3 2010 2169025.60 123.8 942438.7 472.3
Table4
Quarterly Calculation of Nitrate Removed and Total Volume of Water Pumped
TW4-24 TW4•25
Total
Total Pumped Cone Cone Total Pumped Total Total Total Pumped Cone Cone Pumped Total Total
Quarter (gal) (mg/L) (ug/L) (liters) Total (ug) (grams) (pounds) (gal) (mg/L) (ug/L) (liters) Total (ug) (grams) (pounds)
Q3 2010 NA NA 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 NA NA
Ql 2011 NA NA 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 NA NA
Q3 2011 NA NA 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 NA NA
Ql 2012 NA NA 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 NA NA
Q3 2012 NA NA 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 NA NA
Ql 2013 144842.6 35.9 35900 548229.2 19681429751.9 19681.4 43.39 99369.9 9.00 9000 376115.1 3385035643.5 3385.0 7.46
Q2 2013 187509.3 23.7 23700 709722.7 16820428001.9 16820.4 37.08 147310.4 5.24 5240 557569.9 2921666087.4 2921.7 6.44
Q3 2013 267703.5 32.6 32600 1013257.7 33032202568.5 33032.2 72.82 145840.9 5.69 5690 552007.8 3140924419.0 3140.9 6.92
Q42013 260555.3 34.6 34600 986201.8 34122582643.3 34122.6 75.23 126576.5 6.10 6100 479092.1 2922461520.3 2922.5 6.44
Ql 2014 229063.9 31.6 31600 867006.9 27397416823.4 27397.4 60.40 129979.2 2.16 2160 491971.3 1062657947.5 1062.7 2.34
Q2 2014 216984.1 35.0 35000 821284.8 28744968647.5 28745.0 63.37 124829.8 1.21 1210 472480.8 571701759.5 571.7 1.26
Q3 2014 213652.5 31.5 31500 808674.7 25473253443.8 25473.3 56.16 119663.9 1.60 1600 452927.9 724684578.4 724.7 1.60
Q42014 178468.7 35.7 35700 675504.0 24115493853.2 24115.5 53.17 107416.1 1.03 1030 406569.9 418767036. 7 418.8 0.92
Ql 2015 92449.3 34.6 34600 349920.6 12107252777.3 12107.3 26.69 71452.4 14.40 14400 270447.3 3894441609.6 3894.4 8.59
Q2 2015 62664.2 31.8 31800 237184.0 7542451104.6 7542.5 16.63 91985.3 1.14 1140 348164.4 396907371.0 396.9 0.88
Q3 2015 66313.2 25.3 25300 250995.5 6350185188.6 6350.2 14.00 124137.1 1.63 1630 469858.9 765870045.3 765.9 1.69
Q4 2015 107799.1 29.6 29600 408019.6 12077379967.6 12077.4 26.63 116420.1 1.78 1780 440650.1 784357139.7 784.4 1.73
Ql 2016 100063.2 29.1 29100 378739.2 11021311069.2 11021.3 24.30 115483.2 0.84 837 437103.9 365855974.3 365.9 0.81
Q2 2016 65233.6 24.2 24200 246909.2 5975202059.2 5975.2 13.17 125606.0 0.96 959 475418.7 455926542.9 455.9 1.01
Q3 2016 51765.8 34.4 34400 195933.6 6740114223.2 6740.1 14.86 104983.6 1.78 1780 397362.9 707306008.3 707.3 1.56
Q4 2016 99522.5 31.9 31900 376692.7 12016495933.8 12016.5 26.49 98681.2 1.24 1240 373508.3 463150344.1 463.2 1.02
Ql 2017 99117.4 41.3 41300 375159.4 15494081526. 7 15494.1 34.16 161.2 17.00 17000 610.1 10372414.0 10.4 0.02
Q2 2017 52808.7 39.9 39900 199880.9 7975249087 .1 7975.2 17.58 101617.2 0.98 976 384621.1 375390195.6 375.4 0.83
Q3 2017 55574.6 40.0 40000 210349.9 8413994440.0 8414.0 18.55 124138.4 1.23 1230 469863.8 577932528.1 577.9 1.27
Q4 2017 106021.4 31.7 31700 401291.0 12720924668.3 12720.9 28.04 116731.9 1.29 1290 441830.2 569961011.5 570.0 1.26
Ql 2018 96900.2 44.9 44900 366767.3 16467849839.3 16467.8 36.31 116991.7 2.23 2230 442813.6 987474293.4 987.5 2.18
Q2 2018 53117.9 33.6 33600 201051.3 6755322050.4 6755.3 14.89 117758.3 1.14 1140 445715.2 508115288.7 508.1 1.12
Q3 2018 53142.6 33.8 33800 201144.8 6798693525.1 6798.7 14.99 111657.5 0.81 810 422623.6 342325146.4 342.3 0.75
Q4 2018 101606.4 38.4 38400 384580.2 14767880601.6 14767.9 32.56 114458.2 0.63 634 433224.3 274664198.0 274.7 0.61
Ql 2019 97701.0 39.3 39300 369798.4 14533077063.0 14533.1 32.04 90789.5 0.64 639 343638.1 219584725.6 219.6 0.48
Q2 2019 53197.3 33.2 33200 201351.9 6684881625.8 6684.9 14.74 88302.0 0.82 821 334223.1 274397140.5 274.4 0.60
Q3 2019 54445.7 36.4 36400 206077.0 7501201871.8 7501.2 16.54 87609.5 0.55 548 331602.0 181717872.7 181.7 0.40
Q4 2019 102211.0 33.8 33800 386868.7 13076162421. 7 13076.2 28.83 85928.5 0.84 841 325239.5 273526407.8 273.5 0.60
Ql 2020 86344.4 37.1 37100 326813.5 12124780044.9 12124.8 26.73 85049.5 0.61 607 321912.2 195400732.1 195.4 0.43
Table4
Quarterly Calculation of Nitrate Removed and Total Volume of Water Pumped
TW4-24 TW4-25
Total
Total Pumped Cone Cone Total Pumped Total Total Total Pumped Cone Cone Pumped Total Total
Quarter (gal) (mg/L) (ug/L) (liters) Total (ug) (grams) (pounds) (gal) (mg/L) (ug/L) (liters) Total (ug) (grams) (pounds)
Q2 2020 57634.7 41.7 41700 218147.3 9096744057.2 9096.7 20.05 90767.9 0.85 851 343556.6 292366679.4 292.4 0.64
Q3 2020 53316.1 39.1 39100 201801.4 7890436245.4 7890.4 17.40 83956.3 0.99 994 317774.6 315867910.3 315.9 0.70
Q42020 103987.2 35.9 35900 393591.6 14129936716.8 14129.9 31.15 86254.4 1.64 1640 326472.7 535415252.2 535.4 1.18
Ql 2021 81891.2 41.9 41900 309958.3 12987251416.6 12987.3 28.63 80272.2 3.43 3430 303830.4 1042138109.8 1042.1 2.30
Q2 2021 54377.9 48.0 48000 205820.4 9879376872.0 9879.4 21.78 82692.8 1.57 1570 312992.2 491397829.4 491.4 1.08
Q32021 53333.1 26.7 26700 201865.8 5389817430.0 5389.8 11.88 82802.3 0.79 793 313406.8 248531607.5 248.5 0.55
Q4 2021 96534.8 43.6 43600 365384.1 15930745303.8 15930.7 35.12 89361.5 0.98 978 338233.3 330792182.4 330.8 0.73
Q12022 73545.0 36.2 36200 278367.8 10076915265.0 10076.9 22.22 92972.1 1.80 1800 351899.4 633418917.3 633.4 1.40
Q2 2022 50341.7 35.0 35000 190543.2 6669011408.5 6669.0 14.70 101724.9 0.88 880 385028.7 338825230.3 338.8 0.75
Q3 2022 58456.4 32.0 32000 221257.7 7080245224.0 7080.2 15.61 98357.6 1.51 1510 372283.7 562148337.8 562.1 1.24
Q42022 100289.8 27.6 27600 379596.9 10476875291.5. 10476.9 23.10 95056.0 1.47 1470 359787.1 528886998.1 528.9 1.17
Totals Since
Q3 2010 4140487.4 1182.0 4075147.03 73.0
Table4
Quarterly Calculation of Nitrate Removed and Total Volume of Water Pumped
TWN-02 TW4-01
Total
Total Cone Cone Total Pumped Total Total Pumped Cone Cone Total Pumped Total Total
Quarter Pumped (gal) (mg/L) (ug/L) (liters) Total (ug) (grams) (pounds) (gal) (mg/L) (ug/L) (liters) Total (ug) (grams) (pounds)
Q3 2010 NA NA 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 NA NA
Ql 2011 NA NA 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 NA NA
Q3 2011 NA NA 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 NA NA
Ql 2012 NA NA 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 NA NA
Q3 2012 NA NA 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 NA NA
Ql 2013 31009.4 57.3 57300 117370.6 6725334176.7 6725.3 14.83 NA NA NA NA NA NA NA
Q2 2013 49579.3 57.7 57700 187657.7 10827846433.9 10827.8 23.87 NA NA NA NA NA NA NA
Q3 2013 50036.5 80.0 80000 189388.2 15151052200.0 15151.1 33.40 NA NA NA NA NA NA NA
Q42013 49979.9 111.0 111000 189173.9 20998305286.5 20998.3 46.29 NA NA NA NA NA NA NA
Ql 2014 48320.4 42.6 42600 182892.7 7791229616.4 7791.2 17.18 NA NA NA NA NA NA NA
Q2 2014 47611.9 44.7 44700 180211.0 8055433555.1 8055.4 17.76 NA NA NA NA NA NA NA
Q3 2014 46927.2 42.0 42000 177619.5 7460016984.0 7460.0 16.45 NA NA NA NA NA NA NA
Q42014 47585.6 70.6 70600 180111.5 12715871617.6 12715.9 28.03 NA NA NA NA NA NA NA
Ql 2015 47262.2 48.6 48600 178887.4 8693928952.2 8693.9 19.17 24569.2 7.06 7060 92994.4 656540619.3 656.5 1.45
Q2 2015 48497.3 52.8 52800 183562.3 9692088410.4 9692.1 21.37 23989.9 6.07 6070 90801.8 551166753.0 551.2 1.22
Q3 2015 48617.4 49.7 49700 184016.9 9145637892.3 9145.6 20.16 23652.0 6.28 6280 89522.8 562203309.6 562.2 1.2
Q4 2015 46754.1 44.9 44900 176964.3 7945695655.7 7945.7 17.52 20764.3 1.55 1550 78592.9 121818957 .0 121.8 0.27
Ql 2016 47670.2 86.3 86300 180431.7 15571256314.1 15571.3 34.33 19255.6 0.15 148 72882.4 10786602.0 10.8 0.02
Q2 2016 50783.0 45.4 45400 192213.7 8726499937.0 8726.5 19.24 19588.2 0.14 138 74141.3 10231504.S 10.2 0.02
Q3 2016 42329.6 35.3 35300 160217.5 5655679020.8 5655.7 12.47 15613.5 5.49 5490 59097.1 324443065.3 324.4 0.72
Q42016 44640.6 32.6 32600 168964.7 5508248274.6 5508.2 12.14 16756.8 0.75 746 63424.5 47314668.0 47.3 0.10
Ql 2017 45283.2 27.4 27400 171396.9 4696275388.8 4696.3 10.35 16931.8 4.44 4440 64086.9 284545671. 7 284.5 0.63
Q2 2017 42550.6 25.0 25000 161054.0 4026350525.0 4026.4 8.88 18200.2 5.74 5740 68887.8 395415725.2 395.4 0.87
Q3 2017 46668.9 23.9 23900 176641.8 4221738697.4 4221.7 9.31 17413.6 5.04 5040 65910.5 332188799.0 332.2 0.73
Q4 2017 38964.7 31.9 31900 147481.4 4704656325.1 4704.7 10.37 14089.8 5.78 5780 53329.9 308246781.5 308.2 0.68
Ql 2018 43341.0 19.6 19600 164045.7 3215295426.0 3215.3 7.09 12505.7 4.84 4840 47334.1 229096920.6 229.1 0.51
Q2 2018 43697.0 19.8 19800 165393.1 3274784271.0 3274.8 7.22 10814.8 4.38 4380 40934.0 179290998.8 179.3 0.40
Q3 2018 41776.0 18.6 18600 158122.2 2941072176.0 2941.1 6.48 9727.3 4.30 4300 36817.8 158316671.2 158.3 0.35
Q4 2018 38545.8 19.6 19600 145895.9 2859558718.8 2859.6 6.30 9836.7 4.57 4570 37231.9 170149826.4 170.1 0.38
Ql 2019 44752.8 19.0 19000 169389.3 3218397612.0 3218.4 7.10 10603.6 4.51 4510 40134.6 181007163.3 181.0 0.40
Q2 2019 43432.2 45.1 45100 164390.9 7414028552.7 7414.0 16.35 9393.9 1.43 1430 35555.9 50844953.4 50.8 0.11
Q3 2019 41377.5 23.2 23200 156613.8 3633441030.0 3633.4 8.01 9734.1 1.65 1650 36843.6 60791888.0 60.8 0.13
Q42019 34011.4 18.2 18200 128733.1 2342943311.8 2342.9 5.17 9184.3 3.91 3910 34762.6 135921670.2 135.9 0.30
Q12020 32230.0 16.5 16500 121990.6 2012844075.0 2012.8 4.44 9796.7 4.67 4670 37080.5 173165979.4 173.2 0.38
Quarter
Q2 2020
Q3 2020
Q42020
Ql 2021
Q2 2021
Q3 2021
Q4 2021
Ql 2022
Q2 2022
Q3 2022
Q4 2022
Totals Since
Q32010
Total
Pumped (gal)
30078.9
21279.1
25682.1
23310.5
22717.2
20130.8
17425.3
16188.7
16024.1
15082.1
15606.0
1507760.4
Cone Cone
(mg/L) (ug/L)
16.1 16100
17.2 17200
12.0 12000
15.4 15400
13.8 13800
15.3 15300
12.7 12700
15.3 15300
14.0 14000
13.9 13900
14.0 14000
Table4
Quarterly Calculation of Nitrate Removed and Total Volume of Water Pumped
TWN-02 TW4-01
Total
Total Pumped Total Total Pumped Cone Cone Total Pumped
(liters) Total (ug) (grams) (pounds) (gal) (mg/L) (ug/L) (liters)
113848.6 1832963047.7 1833.0 4.04 9600.2 0.44 443 36336.8
80541.4 1385311968.2 1385.3 3.05 9487.3 2.22 2220 35909.4
97206.7 1166480982.0 1166.5 2.57 9318.7 4.30 4300 35271.3
88230.2 1358745734.S 1358.7 3.00 9066.4 2.72 2720 34316.3
85984.6 1186587507.6 1186.6 2.62 8764.1 0.73 728 33172.1
76195.0 1165783535.2 1165.8 2.57 8677.2 1.38 1380 32843.2
65954.8 837626419.7 837.6 1.85 8873.4 4.37 4370 33585.8
61274.2 937495711.4 937.5 2.07 8251.8 3.90 3900 31233.1
60651.0 849114409.5 849.1 1.87 7616.0 0.18 180 28826.6
57085.6 793489799.7 793.5 1.75 8512.1 0.42 420 32218.3
59068.7 826962469.9 827.0 1.82 8450.8 3.62 3620 31986.3
488.5 419040.00
Total Total
Total (ug) (grams) (pounds)
16097183.4 16.1 0.04
79718935.7 79.7 0.18
151666501.9 151.7 0.33
93340401.3 93.3 0.21
24149302.3 24.1 0.05
45323618.8 45.3 0.10
146770029.0 146.8 0.32
121808945.7 121.8 0.27
5188780.8 5.2 0.01
13531685.4 13.5 0.03
115790326.4 115.8 0.26
12.7
Table 4
Quarterly Calculation of Nitrate Removed and Total Volume of Water Pumped
TW4-02 TW4-11
Total Total
Total Pumped Cone Cone Total Pumped Total Total Pumped Cone Cone Pumped Total Total
Quarter (gal) (mg/L) (ug/L) (liters) Total (ug) (grams) (pounds) (gal) (mg/L) (ug/L) (liters) Total (ug) (grams) (pounds)
Q3 2010 NA NA 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 NA NA
Ql 2011 NA NA 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 NA NA
Q3 2011 NA NA 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 NA NA
Ql 2012 NA NA 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 NA NA
Q3 2012 NA NA 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 NA NA
Ql 2013 NA NA 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 NA NA
Q3 2013 NA NA 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 NA NA
Ql 2014 NA NA 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 NA NA
Q3 2014 NA NA 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 NA NA
Ql 2015 24156.7 5.32 5320 91433.1 486424142.5 486.4 1.07 9898.7 8.72 8720 37466.6 326708573.2 326.7 0.72
Q2 2015 22029.9 4.30 4300 83383.2 358547637 .5 358.5 0.79 5243.3 8.48 8480 19845.9 168293151.4 168.3 0.37
Q3 2015 21586.9 3.8 3760 81706.4 307216126.0 307.2 0.7 3584.4 9.6 9610 13567.0 130378427.9 130.4 0.3
Q4 2015 21769.8 5.18 5180 82398.7 426825229.7 426.8 0.94 4110.3 7.50 7500 15557.5 116681141.3 116.7 0.26
Ql 2016 20944.6 5.30 5300 79275.3 420159148.3 420.2 0.93 3676.2 7.13 7130 13914.4 99209793.2 99.2 0.22
Q2 2016 20624.0 6.67 6670 78061.8 520672472.8 520.7 1.15 3760.4 7.81 7810 14233.1 111160620.3 111.2 0.25
Q3 2016 17487.4 4.07 4070 66189.8 269392522.6 269.4 0.59 2953.8 8.83 8830 11180.1 98720574.4 98.7 0.22
Q4 2016 19740.6 6.07 6070 74718.2 453539298.0 453.5 1.00 3050.2 8.92 8920 11545.0 102981462.4 103.0 0.23
Ql 2017 19869.7 4.74 4740 75206.8 356480300.7 356.5 0.79 2984.2 8.12 8120 11295.2 91716999.6 91.7 0.20
Q2 2017 18716.7 4.90 4900 70842.7 347129276.6 347.1 0.77 2845.9 7.92 7920 10771.7 85312113.5 85.3 0.19
Q3 2017 19338.8 5.08 5080 73197.4 371842578.6 371.8 0.82 2830.0 7.78 7780 10711.6 83335859.0 83.3 0.18
Q4 2017 17327.6 3.28 3280 65585.0 215118688.5 215.1 0.47 2612.7 7.79 7790 9889.1 77035851.4 77.0 0.17
Ql 2018 16232.3 2.94 2940 61439.3 180631411.2 180.6 0.40 2571.0 7.89 7890 9731.2 76779444.2 76.8 0.17
Q2 2018 16051.4 3.50 3500 60754.5 212640921.5 212.6 0.47 2513.5 7.51 7510 9513.6 71447117.2 71.4 0.16
Q3 2018 14927.2 4.83 4830 56499.5 272892353.2 272.9 0.60 2170.2 7.15 7150 8214.2 58731580.1 58.7 0.13
Q4 2018 15464.1 3.52 3520 58531.6 206031297 .1 206.0 0.45 2379.5 6.85 6850 9006.4 61693891.4 61.7 0.14
Ql 2019 16169.9 3.92 3920 61203.1 239916040.3 239.9 0.53 2342.4 7.50 7500 8866.0 66494880.0 66.5 0.15
Q2 2019 13893.7 4.38 4380 52587.7 230333926. 7 230.3 0.51 2195.1 8.30 8300 8308.5 68960164.1 69.0 0.15
Q3 2019 14106.9 4.79 4790 53394.6 255760213.0 255.8 0.56 2046.0 7.15 7150 7744.1 55370386.5 55.4 0.12
Q4 2019 14220.9 3.40 3400 53826.1 183008762.1 183.0 0.40 1983.9 7.14 7140 7509.1 53614699.1 53.6 0.12
Ql 2020 13162.1 6.07 6070 49818.5 302398589.4 302.4 0.67 1947.4 7.07 7070 7370.9 52112326.6 52.1 0.11
Table4
Quarterly Calculation of Nitrate Removed and Total Volume of Water Pumped
1W4-02 1W4-11
Total Total
Total Pumped Cone Cone Total Pumped Total Total Pumped Cone Cone Pumped Total Total
Quarter (gal) (mg/L) (ug/L) (liters) Total (ug) (grams) (pounds) (gal) {mg/L) (ug/L) (liters) Total (ug) (grams) (pounds)
Q22020 14155.6 3.62 3620 53578.9 193955784.5 194.0 0.43 2003.9 7.56 7560 7584.8 57340796.9 57.3 0.13
Q3 2020 14009.5 3.35 3350 53026.0 177636957.6 177.6 0.39 1784.1 7.59 7590 6752.8 51253892.4 51.3 0.11
Q42020 14582.9 2.34 2340 55196.3 129159287.0 129.2 0.28 1394.6 7.19 7190 5278.6 37952853.6 38.0 0.08
Ql 2021 13189.6 3.30 3300 49922.6 164744698.8 164.7 0.36 2195.1 7.21 7210 8308.5 59904495.5 59.9 0.13
Q2 2021 11975.9 3.89 3890 45328.8 176328960.0 176.3 0.39 1694.5 8.17 8170 6413.7 52399786.0 52.4 0.12
Q32021 12694.5 1.97 1970 48048.7 94655904.5 94.7 0.21 1560.8 5.78 5780 5907.5 34145214.7 34.1 0.08
Q42021 12351.3 3.49 3490 46749.7 163156350.0 163.2 0.36 1485.5 7.44 7440 5622.6 41832274.2 41.8 0.09
Ql 2022 11380.6 3.30 3300 43075.6 142149384.3 142.1 0.31 1497.2 7.40 7400 5666.9 41935074.8 41.9 0.09
Q2 2022 11518.1 3.10 3100 43596.0 135147626.4 135.1 0.30 1473.1 5.90 5900 5575.5 32895416.1 32.9 0.07
Q3 2022 10953.7 3.07 3070 41459.8 127281446.3 127.3 0.28 1304.3 6.90 6900 4936.9 34064273.3 34.1 0.08
Q4 2022 12148.6 3.74 3740 45982.5 171974366.7 172.0 0.38 1442.4 7.05 7050 4936.9 34064273.3 34.1 0.08
Totals Since
Q3 2010 516781.50 18.3 85534.55 5.6
Table4
Quarterly Calculation of Nitrate Removed and Total Volume of Water Pumped
TW4-21 TW4-37
Total Cone Cone Total Pumped Total Total Total Pumped Cone Cone Total Pumped Total Total
Quarter Pumped (gal) (mg/L) (ug/L) (liters) Total (ug) (grams) (pounds) (gal) (mg/L) (ug/L) (liters) Total (ug) (grams) (pounds)
Q3 2010 NA NA 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 NA NA
Ql 2011 NA NA 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 NA NA
Q3 2011 NA NA 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 NA NA
Ql 2012 NA NA 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 NA NA
Q3 2012 NA NA 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 NA NA
Ql 2013 NA NA 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 NA NA
Q3 2013 NA NA 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 NA NA
Ql 2014 NA NA 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 NA NA
Q3 2014 NA NA NA NA NA NA NA NA NA NA NA NA NA NA
042014 NA NA NA NA NA NA NA NA NA NA NA NA NA NA
012015 NA NA NA NA NA NA NA NA NA NA NA NA NA NA
Q2 2015 30743.7 13.1 13100 116364.9 1524380249.0 1524.4 3.4 29206.0 35.2 35200 110544.7 3891173792.0 3891.2 8.6
Q3 2015 125285.4 14.7 14700 474205.2 6970817013.3 6970.8 15.4 118063.9 32.4 32400 446871.9 14478648312.6 14478.6 31.9
Q4 2015 134774.9 14.30 14300 510123.0 7294758850.0 7294.8 16.08 111737.5 34.60 34600 422926.4 14633254737.5 14633.3 32.26
Ql 2016 125513.3 14.60 14600 475067.8 6935990471.3 6936.0 15.29 111591.0 28.40 28400 422371.9 11995362954.0 11995.4 26.45
02 2016 132248.7 13.10 13100 500561.3 6557353416.5 6557.4 14.46 119241.2 27.90 27900 451327.9 12592049581.8 12592.0 27.76
Q3 2016 110381.9 16.50 16500 417795.5 6893625609.8 6893.6 15.20 98377.6 33.40 33400 372359.2 12436797814.4 12436.8 27.42
Q4 2016 130311.3 13.50 13500 493228.3 6658581651.8 6658.6 14.68 101949.1 26.10 26100 385877.3 10071398665.4 10071.4 22.20
012017 54333.5 17.70 17700 205652.3 3640045665.8 3640.0 8.02 97071.7 32.30 32300 367416.4 11867549219.4 11867.5 26.16
02 2017 60969.7 9.53 9530 230770.3 2199241097.2 2199.2 4.85 93191.3 31.20 31200 352729.1 11005146999.6 11005.1 24.26
Q3 2017 120116.2 18.2 18200 454639.8 8274444669.4 8274.4 18.24 81749.3 30.5 30500 309421.1 9437343565.3 9437.3 20.81
04 2017 126492.5 16.9 16900 478774.1 8091282501.3 8091.3 17.84 87529.6 30.6 30600 331299.5 10137765801.6 10137.8 22.35
01 2018 117832.0 15.8 15800 445994.1 7046707096.0 7046.7 15.54 84769.3 30.0 30000 320851.8 9625554015.0 9625.6 21.22
Q2 2018 116681.0 14.1 14100 441637.6 6227089948.5 6227.1 13.73 83653.1 28.6 28600 316627.0 9055531728.1 9055.5 19.96
Q3 2018 110001.4 0.236 236 416355.3 98259850.6 98.3 0.22 77457.8 25.4 25400 293177.8 7446715434.2 7446.7 16.42
Q42018 121686.3 15.2 15200 460582.6 7000856211.6 7000.9 15.43 76271.4 27.3 27300 288687.2 7881161897.7 7881.2 17.38
012019 123264.1 8.99 8990 466554.5 4194325339.8 4194.3 9.25 77591.4 30.1 30100 293683.4 8839871814.9 8839.9 19.49
02 2019 106893.6 17.5 17500 404592.3 7080364830.0 7080.4 15.61 64950.1 31.2 31200 245836.1 7670087209.2 7670.1 16.91
Q3 2019 108132.9 14.7 14700 409283.0 6016460489.6 6016.5 13.26 67572.0 25.8 25800 255760.0 6598608516.0 6598.6 14.55
Q4 2019 116167.6 5.73 5730 439694.2 2519447632.8 2519.4 5.55 66732.4 25.5 25500 252582.1 6440844417.0 6440.8 14.20
012020 106622.0 8.93 8930 403564.3 3603829269.1 3603.8 7.95 65554.2 28.3 28300 248122.6 7021870910.1 7021.9 15.48
Table4
Quarterly Calculation of Nitrate Removed and Total Volume of Water Pumped
TW4-21 TW4-37
Total Cone Cone Total Pumped Total Total Total Pumped Cone Cone Total Pumped Total Total
Quarter Pumped (gal) (mg/L) (ug/L) (liters) Total (ug) (grams) (pounds) (gal) (mg/L) (ug/L) (liters) Total (ug) (grams) (pounds)
Q2 2020 110999.1 15.4 15400 420131.7 6470028288.6 6470.0 14.26 65163.8 28.3 28300 246645.0 6980053018.9 6980.1 15.39
Q3 2020 99515.1 12.6 12600 376664.7 4745975111.0 4746.0 10.46 56659.3 29.5 29500 214455.5 6326435789.8 6326.4 13.95
Q42020 107061.2 16.3 16300 405226.5 6605191796.8 6605.2 14.56 61323.9 28.7 28700 232111.0 6661584595.1 6661.6 14.69
Ql 2021 97211.5 15.2 15200 367945.5 5592771442.7 5592.8 12.33 59907.4 26.9 26900 226749.5 6099561792.1 6099.6 13.45
Q2 2021 97157.6 21.5 21500 367741.5 7906442594.0 7906.4 17.43 58564.2 26.6 26600 221665.5 5896302220.2 5896.3 13.00
Q32021 93390.4 12.9 12900 353482.7 4559926365.6 4559.9 10.05 49987.5 25.8 25800 189202.7 4881429337.5 4881.4 10.76
Q42021 102535.0 17.2 17200 388095.0 6675234221.0 6675.2 14.72 46649.1 31.3 31300 176566.8 5526542201.6 5526.5 12.18
Ql 2022 91105.4 2.2 2200 344833.9 758634665.8 758.6 1.67 42923.5 29.8 29800 162465.4 4841470335.5 4841.5 10.67
Q2 2022 91682.5 8.9 8900 347018.3 3088462536.3 3088.5 6.81 41998.3 28.0 28000 158963.6 4450979834.0 4451.0 9.81
Q3 2022 87160.0 14.3 14300 329900.7 4717580203.8 4717.6 10.40 39640.3 26.6 26600 150038.5 3991025044.3 3991.0 8.80
Q4 2022 94463.6 2.12 2120 357544.6 757994578.4 758.0 1.67 43251.9 30.9 30900 163708.4 5058590842.3 5058.6 11.15
Totals Since
Q3 2010 3250733.3 354.3 2280329.1 559.6
Table4
Quarterly Calculation of Nitrate Removed and Total Volume of Water Pumped
TW4·39 TW4-40
Total Total
Total Pumped Cone Cone Pumped Total Total Total Pumped Pumped Total
Quarter (gal) (mg/L) (ug/L) (liters) Total (ug) (grams) (pounds) (gal) Cone (mg/L) Cone (ug/L) (liters) Total (ug) Total (grams) (pounds)
Q3 2010 NA NA 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 NA NA
Ql 2011 NA NA 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 NA NA
Q3 2011 NA NA 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 NA NA
Ql 2012 NA NA 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 NA NA
Q3 2012 NA NA 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 NA NA
Ql 2013 NA NA 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 NA NA
Q3 2013 NA NA 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 NA NA
Q12014 NA NA 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 NA NA
Q3 2014 NA NA 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 NA NA
Ql 2015 NA NA NA NA NA NA NA NA NA NA NA NA NA NA
Q2 2015 NA NA NA NA NA NA NA NA NA NA NA NA NA NA
Q3 2015 NA NA NA NA NA NA NA NA NA NA NA NA NA NA
Q4 2015 NA NA NA NA NA NA NA NA NA NA NA NA NA NA
Ql 2016 NA NA NA NA NA NA NA NA NA NA NA NA NA NA
Q2 2016 NA NA NA NA NA NA NA NA NA NA NA NA NA NA
Q3 2016 NA NA NA NA NA NA NA NA NA NA NA NA NA NA
Q4 2016 3589.3 20.70 20700 13585.5 281219860.4 281.2 0.62 NA NA NA NA NA NA NA
Ql 2017 103117.8 6.44 6440 390300.9 2513537622.1 2513.5 5.54 NA NA NA NA NA NA NA
Q2 2017 41313.0 6.25 6250 156369.7 977310656.3 977.3 2.15 NA NA NA NA NA NA NA
Q3 2017 34546.3 7.74 7740 130757.7 1012064950.2 1012.1 2.23 NA NA NA NA NA NA NA
Q42017 68180.2 2.65 2650 258062.1 683864451.1 683.9 1.51 NA NA NA NA NA NA NA
Ql 2018 59262.2 3.33 3330 224307.4 746943731.9 746.9 1.65 NA NA NA NA NA NA NA
Q22018 34259.8 4.84 4840 129673.3 627618980.1 627.6 1.38 NA NA NA NA NA NA NA
Q3 2018 33473.4 6.05 6050 126696.8 766515755.0 766.5 1.69 NA NA NA NA NA NA NA
Q4 2018 37003.6 6.39 6390 140058.6 89497 4620.1 895.0 1.97 NA NA NA NA NA NA NA
Ql 2019 49116.9 2.08 2080 185907.5 386687530.3 386.7 0.85 NA NA NA NA NA NA NA
Q2 2019 34285.7 8.45 8450 129771.4 1096568114.5 1096.6 2.42 81762.8 3.55 3550.0 309472.2 1098626302.9 1098.6 2.4
Q3 2019 36976.2 1.75 1750 139954.9 244921104.8 244.9 0.54 116414.2 3.39 3390.0 440627.7 1493728062.3 1493.7 3.3
Q4 2019 51808.6 0.948 948 196095.6 185898582.3 185.9 0.41 108281.9 2.89 2890.0 409847.0 1184457696.0 1184.5 2.6
Ql 2020 43169.3 0.792 792 163395.8 129409474.0 129.4 0.29 102021.5 2.98 2980.0 386151.4 1150731217.7 1150.7 2.5
Quarter
Q2 2020
Q3 2020
Q42020
Ql 2021
Q2 2021
Q3 2021
Q4 2021
Ql 2022
Q2 2022
Q3 2022
Q42022
Totals Since
Q32010
Total Pumped
(gal)
37352.7
35628.2
46794.2
38932.4
32865.2
31436.6
42730.6
35550.2
31354.2
31305.9
39072.6
1033125.10
Cone
(mg/L)
5.01
2.69
7.03
2.12
12.0
2.70
2.33
2.90
9.00
3.72
7.86
TW4-39
Total
Cone Pumped
(ug/L) (liters)
5010 141380.0
2690 134852.7
7030 177116.0
2120 147359.1
12000 124394.8
2700 118987.5
2330 161735.3
2900 134557.5
9000 118675.6
3720 118492.8
7860 147889.8
Table4
Quarterly Calculation of Nitrate Removed and Total Volume of Water Pumped
TW4-40
Total
Total Total Total Pumped Pumped Total
Total (ug) (grams) (pounds) (gal) Cone(mg/L) Cone (ug/L) (liters) Total (ug) Total (grams) (pounds)
708313647.2 708.3 1.56 100757.1 2.91 2910.0 381365.7 1109774294.8 1109.8 2.4
362753862.5 362.8 0.80 86264.5 2.88 2880.0 326511.1 940352061.6 940.4 2.1
1245125810.4 1245.1 2.75 77535.9 2.58 2580.0 293473.5 757161617 .2 757.2 1.7
312401364.1 312.4 0.69 72543.4 2.43 2430.0 274576.7 667221272. 7 667.2 1.5
1492737384.0 1492.7 3.29 66866.4 3.77 3770.0 253089.3 954146751.5 954.1 2.1
321266333.7 321.3 0.71 58841.0 1.50 1500.0 222713.1 334069664.0 334.1 0.7
376843297.9 376.8 0.83 57357.9 2.60 2600.0 217099.6 564458897 .1 564.5 1.2
390216770.3 390.2 0.86 53009.2 2.50 2500.0 200639.8 501599555.0 501.6 1.1
1068080823.0 1068.1 2.35 52135.2 1.90 1900.0 197331.8 374930506.5 374.9 0.8
440793333.2 440.8 0.97 45416.2 2.22 2220.0 171900.4 381618871.8 381.6 0.8
1162413757.3 1162.4 2.56 48263.2 2.24 2240.0 182676.1 409194545.3 409.2 0.9
40.6 1127470.4 26.3
Table4
Quarterly Calculation of Nitrate Removed and Total Volume of Water Pumped
TW4-41
Total Removed
Total Pumped Cone Cone Pumped Total Total by All
Quarter (gal) (mg/L) (ug/L) (liters) Total (ug) (grams) (pounds) Wells
Q3 2010 NA NA NA NA NA NA NA 15.69
Q42010 NA NA NA NA NA NA NA 27.97
Ql 2011 NA NA NA NA NA NA NA 73.30
Q2 2011 NA NA NA NA NA NA NA 27.01
Q3 2011 NA NA NA NA NA NA NA 16.82
Q42011 NA NA NA NA NA NA NA 19.71
Ql 2012 NA NA NA NA NA NA NA 15.86
Q2 2012 NA NA NA NA NA NA NA 15.03
Q3 2012 NA NA NA NA NA NA NA 14.67
Q42012 NA NA NA NA NA NA NA 14.92
Ql 2013 NA NA NA NA NA NA NA 95.73
Q2 2013 NA NA NA NA NA NA NA 91.71
Q3 2013 NA NA NA NA NA NA NA 176.53
Q42013 NA NA NA NA NA NA NA 162.07
Ql 2014 NA NA NA NA NA NA NA 103.14
Q2 2014 NA NA NA NA NA NA NA 101.87
Q3 2014 NA NA NA NA NA NA NA 92.99
Q4 2014 NA NA NA NA NA NA NA 108.57
Ql 2015 NA NA NA NA NA NA NA 82.61
Q2 2015 NA NA NA NA NA NA NA 68.86
Q3 2015 NA NA NA NA NA NA NA 118.63
Q4 2015 NA NA NA NA NA NA NA 124.50
Ql 2016 NA NA NA NA NA NA NA 132.55
Q2 2016 NA NA NA NA NA NA NA 99.98
Q3 2016 NA NA NA NA NA NA NA 101.12
Q4 2016 NA NA NA NA NA NA NA 106.06
Ql 2017 NA NA NA NA NA NA NA 116.19
Q2 2017 NA NA NA NA NA NA NA 80.12
Q3 2017 NA NA NA NA NA NA NA 93.37
Q4 2017 NA NA NA NA NA NA NA 106.21
Ql 2018 NA NA NA NA NA NA NA 111.99
Q2 2018 73711.2 6.54 6540 278996.9 1824639673. 7 1824.6 4.02 84.14
Q3 2018 44981.6 6.13 6130 170255.2 1043664404.2 1043.7 2.30 61.86
Q4 2018 35431.5 6.02 6020 134108.2 807331529.6 807.3 1.78 98.49
Ql 2019 31903.6 6.71 6710 120755.1 810266895.5 810.3 1.79 101.08
Q2 2019 25146.5 6.00 6000 95179.5 571077015.0 571.1 1.26 101.72
Q3 2019 24045.6 6.22 6220 91012.6 566098347.1 566.1 1.25 80.19
Q4 2019 21186.4 6.11 6110 80190.5 489964101.6 490.0 1.08 76.97
Ql 2020 17289.9 6.12 6120 65442.3 400506701.6 400.5 0.88 86.86
Table4
Quarterly Calculation of Nitrate Removed and Total Volume of Water Pumped
TW4-41
Total Removed
Total Pumped Cone Cone Pumped Total Total by All
Quarter (gal) (mg/L) (ug/L) (liters) Total (ug) (grams) (pounds) Wells
Q22020 17294.9 6.78 6780 65461.1 443826399.0 443.8 0.98 85.95
Q3 2020 13411.4 6.69 6690 50762.3 339599536.5 339.6 0.75 81.69
Q42020 17765.7 6.25 6250 67243.3 420270313.8 420.3 0.93 89.15
Ql 2021 13407.5 6.41 6410 50747.3 325290026.0 325.3 0.72 88.22
Q2 2021 13168.7 7.45 7450 49843.5 371334294.8 371.3 0.82 91.09
Q3 2021 13821.0 3.77 3770 52312.4 197217640.4 197.2 0.43 56.81
Q4 2021 12449.1 6.72 6720 47119.7 316644076.6 316.6 0.70 97.29
Ql 2022 12247.8 6.20 6200 46357.9 287419122.6 287.4 0.63 54.84
Q2 2022 11013.9 6.00 6000 41687.4 250124533.5 250.1 0.55 51.61
Q3 2022 11108.0 5.92 5920 42043.9 248899849.8 248.9 0.55 62.30
Q42022 11722.6 6.00 6000 44369.9 266219337.6 266.2 0.59 64.26
Totals Since
Q3 2010 421106. 72 22.0 4030.29
Table 5
Nitrate Data Over Time for MW-30, MW-31, MW-5, and MW-11
Date
Q2 2010
Q3 2010
Q4 2010
QI 2011
Q2 2011
Q3 2011
Q4 2011
QI 2012
Q2 2012
Q3 2012
Q4 2012
Ql 2013
Q2 2013
Q3 2013
Q42013
QI 2014
Q2 2014
Q3 2014
Q42014
QI 2015
Q2 2015
Q3 2015
Q4 2015
QI 2016
Q2 2016
Q3 2016
Q4 2016
QI 2017
Q2 2017
Q3 2017
Q4 2017
QI 2018
Q2 2018
Q32018
Q4 2018
QI 2019
Q2 2019
Q3 2019
Q4 2019
Ql 2020
Q2 2020
Q3 2020
Q4 2020
Ql 2021
Q2 2021
Q3 2021
Q4 2021
Ql 2022
Q2 2022
Q3 2022
Q4 2022
ND = Not detected
NS = Not Sampled
MW-30
15.8
15
16
16
17
16
16
17
16
17
18.5
21.4
18.8
17.6
19.5
18.4
19.4
16.8
16.2
14.9
17.0
17.9
16.3
20.0
17.3
18.0
17.2
17.4
17.5
19.2
17.4
17.6
17.3
18.0
17.3
17.9
18.5
19.3
18.2
16.4
18.1
18.4
16.8
17.7
17.7
20.6
14.3
14.5
17.0
17.6
17.9
MW-31
22.5
21
20
21
22
21
21
21
20
21
23.6
19.3
23.8
21.7
23.9
20.6
23.1
18.9
20.9
18.7
19.0
19.9
18.4
18.8
18.6
19.7
18.8
21.1
18.3
19.5
19.2
18.8
19.0
20.1
18.3
19.0
19.7
19.8
19.8
17.5
18.8
19.2
18.6
17.1
18.6
18.7
18.1
18.0
18.0
16.9
17.0
MW-5 MW-11
ND ND
NS ND
0.2 ND
NS ND
0.2 ND
NS ND
0.2 ND
NS ND
0.1 ND
NS ND
ND ND
NS ND
ND ND
NS ND
0.279 ND
NS ND
ND ND
NS ND
0.21 ND
NS ND
0.142 ND
NS ND
0.118 ND
NS ND
0.156 0.117
NS ND
0.241 ND
NS ND
0.133 ND
NS ND
0.337 ND
NS ND
0.216 ND
NS ND
0.309 ND
NS ND
0.260 ND
NS 0.558
0.235 0.160
NS 0.308
0.142 0.297
NS 0.651
0.191 0.933
NS 1.21
<0.100 0.948
NS 0.924
0.313 1.50
NS 2.55
0.3 2.2
NS 2.12
0.210 2.90
TABLE 6
Slug Test Results
(Using KGS Solution and Automatically Logged Data)
Well K
(cm/sl
MW-30 1.0E-04
MW-31 7.1 E-05
TW4-22 1.3E-04
TW4-24 1.6E-04
TW4-25 5.BE-05
TWN-2 1.5E-05
TWN-3 8.6E-06
Average 1
Average2
Average3
Average4
Notes:
Average 1 = arithemetic average of all wells
Average 2 = geometric average of all wells
K
(ft/davl
0.28
0.20
0.36
0.45
0.16
0.042
0.024
0.22
0.15
0.32
0.31
Average 3 = arithemetic average of MW-30, MW-31, TW4-22, and TW4-24
Average 4 = geometric average of MW-30, MW-31, TW4-22, and TW4-24
emfs = centimeters per second
ft/day= feet per day
K = hydraulic conductivity
KGS = KGS Unconfined Slug Test Solution in Aqtesolve ™.
S:\Environmental\UT\WhiteMesaMill\Required Reports\Nitrate Quarterly Report\2022 O4\FlowCalcs -Tables 6-7-8.xls: Table 6
Well
TW4-22
TW4-24
Notes:
ft= feet
TABLE 7
Pre-Pumping Saturated Thicknesses
Depth to Depth to Water Saturated Thickness
Brushy Basin Fourth Quarter, 2012 Above Brushy Basin
(ft) (ft) (ft)
112 53 58
110 55 55
S:\Environmental\UT\WhiteMesaMill\Required Reports\Nitrate Quarterly Report\2022 Q4\FlowCalcs -Tables 6-7-8.xls: Table 7
TABLE 8
Pre-Pumping Hydraulic Gradients and Flow Calculations
Pathline Boundaries
TW4-25 to MW-31
TWN-2 to MW-30
Notes:
ft= feet
ft/ft = feet per foot
gpm = gallons per minute
Path Length
(ft)
2060
2450
Head Change Hydraulic Gradient
(ft) (ft/ft)
48 0.023
67 0.027
average 0.025
1 min flow (gpm) 1.31
2 max flow (gpm) 2.79
1 assumes width = 1,200 ft; saturated thickness = 56 ft; K = 0.15 ft/day; and gradient = 0.025 ft/ft
2 assumes width = 1,200 ft; saturated thickness = 56 ft; K = 0.32 ft/day; and gradient = 0.025 ft/ft
S:\Environmental\UT\WhiteMesaMill\Required Reports\Nitrate Quarterly Report\2022 O4\FlowCalcs -Tables 6-7-8.xls: Table 8
Table 9
*Recalculated Background Flow
Background *Recalculated
Flow Background Flow
(aDm) laom)
minimum 1.31 0.79
maximum 2.79 1.67
* recalculated based on reduced widlife pond recharge as
presented in the third quarter, 2015 Nitrate Monitoring Report
gpm = gallons per minute
Tab A
Site Plan and Perched Well Locations White Mesa Site
'-4
TW4-43 ~
TWN-20
C
MW-24A •
TW4-42
¢
TW4-40
EB
TW4-19 EB
MW-38
-¢-
MW-5 •
TW4-12
0
TWN-7
◊
PIEZ-1
~
perched monitoring well
installed July, 2022
DR-14 •
temporary perched monitoring well
installed September, 2021
temporary perched nitrate monitoring
well installed April, 2021
perched monitoring well installed
December2019
temporary perched monitoring well
installed April 2019
perched chloroform pumping well
installed February 2018
perched chloroform or
nitrate pumping well
perched monitoring well installed
February 2018
perched monitoring well
temporary perched monitoring well
temporary perched nitrate monitoring
well
perched piezometer
RUIN SPRING o seep or spring
Dl~0--06
DR-10 .
• MW-21
DR--07 0
DR-11 •
DR-15
,
MW-~
M:--02 M','j,24
DR-12
• MW-3A
• MW-20
DR-13 •
rt
• MW-29
• I
.. MW--01
3bant::101Jad ❖ TWN--05
• MW-18
❖
:ibandoned 0 TWN-11
abDndonod ❖ TWN-12 0
atumdon~d
❖ TWN-15
ab.Jndot1ed 0
❖ TWN-14
TWN-10
ab,?ndonarJ
❖ TWN--09 ❖ TWN--06
ah;:i11do11£>d ❖ TWN--08
.
PIEZ--01
• MW-19
❖ TWN-18
.1bondoned ❖ TWN-17
abandonod
❖ TWN-13
TWN-19
D 0 TWN-18
TWN-20 TWN--07 '
D TWN-21
Cci!I 1
l'W-28
:C0J~.2
• MW-30
Celi 3
• MW-17
!¢
ti.)
LU ~ ·,u·,
~. --·
❖ MW-38
o·
TWN--03
qJ • ❖ e TWN-l!2 TWN~ MW-27~1Ut ,pite i
, TWi--OI PIEZ,3A TW4-21'/) "
TW4;,~I -,--.~• ~q)S
lW~_J-~t-:p•: 4-34 '4!24!llrwt3't'.w4,~~ 1'8' 1W ... 12
;;r_._ ,,, 0 . 0 .. 0 TWW2 MW-A'~~1i,w4fb3 1W4!21,o
lW"'18W,4-11 W H3
0 • \fo.:r;~:.fJ-41
'r,uu,7@,fj •.l'l 4-31 .,,~ iJ;'lw.c.-0,fJW • • --,w...01 MW-31 .Ji-cJ, , ,"1l ,
MW '~"'°"'"1W~t.""1' ... , .;r;w1l?'2hv4-31
~
~lllll •~• 0. -0·· ' 1W4-3 01W4-30 ~ ., ~-l:!TW4'43 ·TW . (jl,.,,"35r
❖ MW-39
\' JWUOR• TW~;~
~o
❖
MW-40
~
·~
• MW-22
1 ·mile
HYDRO
GEO
CHEM, INC.
WHITE MESA SITE PLAN SHOWING LOCATIONS OF
PERCHED WELLS AND PIEZOMETERS
APPROVED DATE REFERENCE
H:/718000/nov22/Uwelloc0922.srf
FIGURE
A-1
TabB
Order of Sampling and Field Data Worksheets
Nitrate
Mg/L
Previous
Name Qrt.
TWN-18 0.328
TWN-20 0.481
TWN-21 1.19
TWN-04 1.39
TWN-01 2.94
TWN-02 13.9
TWN-07 14.60
TWN-03 28.2
Duplicateof 1\ol,J ,:lO
DI Sample (..0
Plez-02
Piez-01
Piez-03A
0.706
6.37
10.6
Nitrate Samples·
Date/Purge sample
103g
lO/ ~ 10$
1::~:;1:: I
110/!JL/-,-:, OS3t>
10/zr./z?. 0105
Nitrate Order
4th Quarter 2022
Depth Total Depth
145
98.2
108.65
125.7
112.5
96
I ':I
Rinsate Samples
Name Date Sample
Samplers: ~,,nee Yoll;&.it
Oat'\ Ljnt~'l
Groundwater Discharge Permit
~
,
'--.,· I ,,~ . ,
• f' "''
,_.-_,:,,' ~y~
Groundwater Monitoring Quality Assurance Plan
White Mesa Mill
Field Data Worksheet For Groundwater
Location ID PIEZ-01 Sampling Program Nitrate Quarterly
Field Sample ID Piez-01 10252022 Sampling_ Event 2022 Q4 Nitrate
Purge Date & Time 10/25/2022 13:38
Sample Date & Time 10/25/2022 13:45 [sampler TH/DL
Purging Equipment Bailer Weather Conditions Sunny
Pump Type Grundfos External Ambient Temperature (C) 12
Purging Method 2 Casings Previous Well Sampled Piez-02
Casing Volume ()
Calculated Casing Volumes Purge Duration ()
pH Buffer 7.0 7.0 Well Depth (ft) 107.50
pH Buffer 4.0 4.0 Well Casing Diameter (in) 1
Specific Conductance (micromhos) 1000 Depth to Water Before Purging (ft) 67.72
Conductivity Dissolved
Date/Time Gallons Purged (umhos/cm) pH (pH Units) Temp (deg C) Redox (mV) Turbidity (NTU) Oxygen(%) Before/After
10/25/2022 13:44 2456 7.05 15.16 343 4,6 64,6
Pumping Rate Calculations
[volume of water purged O Flow Rate (Q = S/60) ()
Time to evacuate 2 Casing Volumes ()
!Final Depth to Water (feet) 67.75 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?
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 1338. Bailing~e_g_an at 1343. Samples bailed at 1345. Water was a little murky. Left site at 1354.
Signature of Field Technician
~~~
Groundwater Discharge Permit e -F-:1'" ...----,:-· . ;::,---. . ' -, . ':,_ . r '!'J
-., __ ( f .· ~ ,El't,/SRIGYFU!/E!iLS
Groundwater Monitoring Quality Assurance Plan
White Mesa Mill
Field Data Worksheet For Groundwater
Location ID PIEZ-02 Sampling Program Nitrate Quarterly
Field Sample ID Piez-02 10252022 Sampling Event 2022 Q4 Nitrate
Purge Date & Time 10/25/2022 13:21
Sample Date & Time 10/25/2022 13:30 lsameler TH/DL
Purging Equipment Bailer Weather Conditions Sunny
Pump Type Grundfos External Ambient Temperature (C) 12
Purging Method 2 Casings Previous Well Sampled TWN-03
Casing Volume()
Calculated Casing Volumes Purge Duration ()
pH Buffer 7.0 7.0 Well Depth (ft) 100.00
pH Buffer 4.0 4.0 Well Casing Diameter (in) 1
Specific Conductance (micromhos) 1000 Depth to Water Before Purging (ft) 47.07
Conductivity Dissolved
Date/Time Gallons Purged (umhos/cm) pH (pH Units) Temp {deg C) Redox (mV) Turbidity (NTU) Oxygen(%) Before/After
10/25/2022 13:29 974 6.80 15.35 372 38.0 38.1
Pumping Rate Calculations
jvolume of wate!_p!Jrged () Flow Rate (Q = S/60) ()
Time to evacuate 2 Casing Volumes () I Final Depth to Water (feet) 47.40 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?
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 1317. Bailing began at 1323. Samples collected at 1330. Water was clear. Left site at 1333.
Signature of Field Technician
~~
Groundwater Discharge Permit
Groundwater Monitoring Quality Assurance Plan
White Mesa Mill
~YFtf!EiLS Field Data Worksheet For Groundwater
Location ID PIEZ-03A Sampling Program Nitrate Quarterly
Field Sample ID Piez-03A 10252022 Sampling Event 2022 Q4 Nitrate
Purge Date & Time 10/25/2022 13:58
Sample Date & Time 10/25/2022 14:10 [sa111e_ler TH/DL
Purging Equipment Bailer Weather Conditions Sunny
Pump Type Grundfos External Ambient Temperature (C) 12
Purging Method 2 Casings Previous Well Sampled Piez-01
Casing Volume()
Calculated Casing Volumes Purge Duration ()
pH Buffer 7.0 7.0 Well Depth (ft) 79.00
pH Buffer 4.0 4.0 Well Casing Diameter (in) 1
Specific Conductance (micromhos) 1000 Depth to Water Before Purging (ft) 55.62
Conductivity Dissolved
Date/Time Gallons Purged (umhos/cm) pH (pH Units) Temp (deg C) Redox (mV) Turbidity (NTU) Oxygen(%) Before/ After
10/25/2022 14:09 1058 6.90 14.50 380 5.3 90.5
Pumping Rate Calculations
[volume of ~ater purged () Flow Rate (Q = S/60) ()
Time to evacuate 2 Casing Volumes ()
[ Final Depth to Water (feet) 56.00 Number of casing Volumes
Volume, if well evacuated to dryness () 0
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?
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:
[ Arrived on site at 1358. Samples bailed and collected at 1410. Water was a little murky. Left site at 1415.
Signature of Field Technician
-:::3~~
Groundwater Discharge Permit
~ ~·-r. ~ llllllf: V , / 'Ir ~YFil:.JIES/£..:S
~ ~·
Groundwater Monitoring Quality Assurance Plan
White Mesa Mill
Field Data Worksheet For Groundwater
Location ID TWN-01 Sampling_ Program Nitrate Quarterly
Field Sample ID TWN-01 10252022 Sampling Event 2022 Q4 Nitrate
Purge Date & Time 10/25/2022 10:33
Sample Date & Time 10/25/2022 10:12 [sampler TH/DL
Purging Equipment Pump Weather Contlitions Sunny
Pump Type Grundfos External Ambient Temperature (C) 5
Purging Method 2 Casings Previous Well Sampled TWN-04
Casing Volume (gal) 23.36
Calculated Casing Volumes Purge Duration (min) 4.24
pH Buffer 7.0 7.0 Well Depth (ft) 106.13
pH Buffer 4.0 4.0 Well Casing Diameter (in) 4
Specific Conductance (micromhos) 1000 Depth to Water Before Purging (ft) 70.35
Conductivity Dissolved
Date/Time Gallons Purged (gal) (umhos/cm) pH (pH Units) Temp (deg C) Redox (mV) Turbidity (NTU) Oxygen(%) Before/ After
10/25/2022 10:35 22.00 948 6.80 15.23 355 0 38.9
10/25/2022 10:36 33.00 946 6.97 15.28 352 2.4 39.0
10/25/2022 10:37 44.00 933 7.04 15.27 350 2.7 40.0
10/25/2022 10:38 55.00 924 7.10 15.31 346 2.8 42.0
[volume of water purged (gals)
Pumping_ Rate Calculations
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) 82.45 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?
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 1027. Purge began at 1033. Purged~weill for a total of 5 minutes. Purge ended and samples collected at 1038. Water was clear. Left site at 1043.
Signature of Field Technician
--=3~~
Groundwater Discharge Permit w;:: ... ,, ~·
• t ' -· , / ,'l ~y~s ... -~
Groundwater Monitoring Quality Assurance Plan
White Mesa Mill
Field Data Worksheet For Groundwater
Location ID TWN-02 Sampling Program Nitrate Quarterly
Field Sample ID TWN-02 10252022 Sampling Event 2022 Q4 Nitrate
Purge Date & Time 10/25/2022 10:54
Sample Date & Time 10/25/2022 10:55 !sampler TH/DL
Purging Equipment Pump Weather Conditions Sunny
Pump Type Grundfos External Ambient Temperature (C) 6
Purging Method 2 Casings Previous Well Sampled TWN-01
Casing Volume (gal) 12.30
Calculated Casing Volumes Purge Duration ()
pH Buffer 7 .0 7.0 Well Depth (ft) 95.90
pH Buffer 4.0 4.0 Well Casing Diameter (in) 4
Specific Conductance (micromhos) 1000 Depth to Water Before Purging (ft) 77.05
Conductivity Dissolved
Date/Time Gallons Purged (umhos/cm) pH (pH Units) Temp (deg C) Redox (mV) Turbidity (NTU) Oxygen(%) Before/After
10/25/2022 10:55 1942 6.75 14.58 325 0 89.0
Pumping Rate Calculations
!volume of water purged () Flow Rate (Q = S/60) (gal/min) 16.00
Time to evacuate 2 Casing Volumes () I Final Depth to Water (feet) 91.78 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?
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: I Arrived on site at 1048. Samples collected at 1055. Water was clear. Left site at 1100.
Signature of Field Technician
-2>~~
Groundwater Discharge Permit
F-. ~ II
...O·~ L:7tt,,,c,,,, ~
Groundwater Monitoring Quality Assurance Plan
White Mesa Mill
Field Data Worksheet For Groundwater
Location ID TWN-03 Sampling Program Nitrate Quarterly
Field Sample ID TWN-03 10262022 Sampling_ Event 2022 Q4 Nitrate
Purge Date & Time 10/25/2022 12:42
Sample Date & Time 10/26/2022 9:35 !sampler TH/DL
Purging Equipment Pump Weather Conditions Sunny
Pump Type Grundfos External Ambient Temperature (C) 11
Purging Method 2 Casings Previous Well Sampled TWN-07
Casing Volume (gal) 33.95
Calculated Casing Volumes Purge Duration (min) 6.17
pH Buffer 7.0 7.0 Well Depth (ft) 96.00
pH Buffer 4.0 4.0 Well Casing Diameter (in) 4
Specific Conductance (micromhos) 1000 Depth to Water Before Purging (ft) 44.00
Conductivity Dissolved
Date!Time Gallons Purged (gal) (umhos/cm) pH (pH Units) Temp (deg C) Redox (mV) Turbidity (NTU) Oxygen(%) Before/After
10/25/2022 12:45 33.00 2447 6.95 14.86 299 1.3 37.8
10/26/2022 9:35 2346 6.71 13.50 Before
10/26/2022 9:36 2357 6.70 13.55 After
Pumping Rate Calculations
[volume of water purge_d _igals) 49.50 Flow Rate (Q = S/60) (gal/min) 11.00
Time to evacuate 2 Casing Volumes (min) 4.50 I Final Depth to Water (feet) 90.38 Number of casing Volumes 1.45
Volume, if well evacuated to dryness (gals) 49.50
Name of Certified Analytical Laboratory
AWSL
Analytical Samples Information
Sample Container Preservative
Type of Sample/Analysis Collected? Matrix Number Type Sample Filtered? Type Added?
Chloride y WATER 1 500-ml Poly u None
Nitrate/nitrite as N y WATER 1 250-ml HOPE u H2SO4 (pH<2), 4 Deg C
Comments:
Arrived on site at 1237. Purge began at 1242. Purged well for a total of 4 minutes and 30 seconds. Purged well dry. Purge ended at 1446. Water was a little murky. Left site at 1452.
Arrived on site at 0930. Depth to water was 43.18. Samp_les bailed and collected at 0935. Left site at 0938.
Signature of Field Technician
~~~
N
y
Groundwater Discharge Permit
eF-::~ .· . . ) . V
~. '_
1
~ _/~Y~ee:r:S
Groundwater Monitoring Quality Assurance Plan
White Mesa Mill
Field Data Worksheet For Groundwater
Location ID TWN-04 Sampling Program Nitrate Quarterly
Field Sample ID TWN-04 10252022 Sampling Event 2022 Q4 Nitrate
Purge Date & Time 10/25/2022 9:50
Sample Date & Time 10/25/2022 9:59 !sampler TH/DL
Purging Equipment Pump Weather Conditions Sunny
Pump Type Grundfos External Ambient Temperature (C) 4
Purging Method 2 Casings Previous Well Sampled TWN-21
Casing Volume (gal) 41.18
Calculated Casing Volumes Purge Duration (min) 7.48
pH Buffer 7.0 7.0 Well Depth (ft) 126.40
pH Buffer 4.0 4.0 Well Casing Diameter (in) 4
Specific Conductance (micromhos) 1000 Depth to Water Before Purging (ft) 63.33
Conductivity Dissolved
Date!Time Gallons Purged (gal) (umhos/cm) pH (pH Units) Temp (deg C) Redox (mV) Turbidity (NTU) Oxygen(%) Before/After
10/25/2022 9:56 66.00 1057 6.83 14.89 345 1.0 64.5
10/25/2022 9:57 77.00 1054 6.99 14.90 344 1.1 64.3
10/25/2022 9:58 88.00 1049 7.06 14.91 343 1.0 64.0
10/25/2022 9:59 99.00 1050 7.11 14.92 343 1.1 63.0
Pumping Rate Calculations
!volume of water purged (gals) 99.00 Flow Rate (Q = S/60) (gal/min) 11.00
Time to evacuate 2 Casing Volumes (min) 9.00
[ Final Depth to Water (feet) 64.30 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?
Chloride V 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 V
Comments: I Arrived on site at Q944. ~urge began at 0950. Purged well for a total of 9 minutes. Purge ended and samples collected at 0959. Water was clear. Left site at 1005.
Signature of Field Technician
~~-r,rcn: ~ ~
Groundwater Discharge Permit e. 'F-: _ _. .... ' 1-;:, ~ .· . '' 'I ~-~ ~-. v .El'l~Y~
Groundwater Monitoring Quality Assurance Plan
White Mesa Mill
Field Data Worksheet For Groundwater
Location ID TWN-07 Sampling Program Nitrate Quarterly
Field Sample ID TWN-07 10262022 Sampling_ Event 2022 Q4 Nitrate
Purge Date & Time 10/25/2022 12:13
Sample Date & Time 10/26/2022 9:20 [sampler TH/DL
Purging Equipment Pump Weather Conditions Sunny
Pump Type Grundfos External Ambient Temperature (C) 10
Purging Method 2 Casings Previous Well Sampled TWN-02
Casing Volume (gal) 17.87
Calculated Casing Volumes Purge Duration (min) 3.25
pH Buffer 7.0 7.0 Well Depth (ft) 107.20
pH Buffer 4.0 4.0 Well Casing Diameter (in) 4
Specific Conductance (micromhos) 1000 Depth to Water Before Purging (ft) 79.82
Conductivity Dissolved
Date/Time Gallons Purged (gal) (umhos/cm) pH (pH Units) Temp (deg C) Redox (mV) Turbidity (NTU) Oxygen(%) Before/After
10/25/2022 12:15 22.00 243 6.67 14.99 390 2.2 86.0
10/26/2022 9:20 1948 6.60 13.37 Before
10/26/2022 9:21 1949 6.64 13.50 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) 103.50 Number of casing Volumes 1.23
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?
Chloride y WATER 1 500-ml Poly u None
Nitrate/nitrite as N y WATER 1 250-ml HDPE u H2SO4 (pH<2), 4 Deg C
Comments:
Arrived on site at 1207. Purge began at 1213. Purged well for a total of 2 minutes. Purged well dry. Purge ended at 1215. Water was clear. Left site at 1219.
Arrived on site at 0915. Depth to water was 90.67. Samples bailed and collected at 0920. Left site at 0924.
Signature of Field Technician
-:3~~
N
y
Groundwater Discharge Permit
F-:'. -_____,ii15! ,..-.... ms,,..,.._,.-
Groundwater Monitoring Quality Assurance Plan
White Mesa Mill
Field Data Worksheet For Groundwater
Location ID TWN-18 Sampling Program Nitrate Quarterly
Field Sample ID TWN-18 10252022 Sampling Event 2022 Q4 Nitrate
Purge Date & Time 10/25/2022 8:04
Sample Date & Time 10/25/2022 6:54 !sampler TH/DL
Purging Equipment Pump Weather Conditions Sunny
Pump Type Grundfos External Ambient Temperature (C) 0
Purging Method 2 Casings Previous Well Sampled TWN-18R
Casing Volume (gal) 54.85
Calculated Casing Volumes Purge Duration (min) 9.97
pH Buffer 7.0 7.0 Well Depth (ft) 147.00
pH Buffer 4.0 4.0 Well Casing Diameter (in) 4
Specific Conductance (micromhos) 1000 Depth to Water Before Purging (ft) 63.00
Conductivity Dissolved
Date/Time Gallons Purged (gal) (umhos/cm) pH (pH Units) Temp (deg C) Redox (mV) Turbidity (NTU) Oxygen(%) Before/After
10/25/2022 8:12 88.00 1310 6.75 14.49 347 0 0.4
10/25/2022 8:13 99.00 1305 6.79 14.50 345 0 0.3
10/25/2022 8:14 110.00 1300 6.80 14.51 344 0 0.3
10/25/2022 8:15 121.00 1289 6.80 14.52 343 0 0.3
Pumping Rate Calculations
!volume of water purged (gals) 121.00 Flow Rate (Q = S/60) (gal/min) 11.00
Time to evacuate 2 Casing Volumes (min) 11.00
[ Final Depth to Water (feet) 64.25 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?
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:
[ Arrived on site at 0755. Purge began at 0804. Purged well for a total of 11 min_1Jtes. Purge ended and samples collected at 0815. Water was clear. Left site at 0821.
Signature of Field Technician
~~~ <='
Groundwater Discharge Permit
F-:ljl I V'~-
/ =-,_/ ~y~
Groundwater Monitoring Quality Assurance Plan
White Mesa Mill
Field Data Worksheet For Groundwater
Location ID TWN-18R Sampling Program
Field Sample ID TWN-18R 10252022 Sampling Event 2022 Q4 Nitrate
Purge Date & Time
Sample Date & Time 10/25/2022 6:40 [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) (umhos/cm) pH (pH Units) Temp (deg C) Redox (mV) Turbidity (NTU) Oxygen(%) Before/ After
10/25/2022 6:38 133.00 1.0 5.99 15.89 371 0 32.8
Pumping Rate Calculations
[\f_olume of water purged O 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?
Chloride y WATER 1 500-ml Poly u None N
Nitrate/nitrite as N y WATER 1 250-ml HOPE u H2504 (pH<2), 4 Deg C y
Comments:
Signature of Field Technician
~~~
Groundwater Discharge Permit ~-7~ ~. . IY EJVERIGYFU'EZ-5
Groundwater Monitoring Quality Assurance Plan
White Mesa Mill
Field Data Worksheet For Groundwater
Location ID TWN-20 Sampling Program Nitrate Quarterly
Field Sample ID TWN-20 10262022 Sampling Event 2022 Q4 Nitrate
Purge Date & Time 10/25/2022 8:45
Sample Date & Time 10/26/2022 8:30 [sampler TH/DL
Purging Equipment Pump Weather Conditions Sunny
Pump Type Grundfos External Ambient Temperature (C) 2
Purging Method 2 Casings Previous Well Sampled TWN-18
Casing Volume (gal) 13.04
Calculated Casing Volumes Purge Duration (min) 2.37
pH Buffer 7.0 7.0 Well Depth (ft) 98.20
pH Buffer 4.0 4.0 Well Casing Diameter (in) 4
Specific Conductance (micromhos) 1000 Depth to Water Before Purging (ft) 78.22
Conductivity Dissolved
Date/Time Gallons Purged (gal) (um hos/cm) pH (pH Units) Temp (deg C) Redox (mV) Turbidity (NTU) Oxygen(%) Before/After
10/25/2022 8:46 13.75 2997 6.71 14.36 402 4.7 16.60
10/26/2022 8:30 2932 6.82 14.90 Before
10/26/2022 8:34 3014 6.90 14.25 After
Pumping Rate Calculations
[volume of water purged (gals) 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) 95.93 Number of casing Volumes 1.05
Volume, if well evacuated to dryness (gals) 13.75
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?
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 0845. Purged well for a total of 1 minute and 25 seconds. Purged well dry. Purge ended at 0846. Left site at 0849.
Arrived on site at 0823. Depth to water was 78.20. Samples bailed and collected at 0830. Left site at 0835.
Signature of Field Technician
~~~
Groundwater Discharge Permit llllaiiF-·1 ··.,;,, -•·.-~---.,r--,1
. , E7tr/EiRJG'Y~ ~ ,
Groundwater Monitoring Quality Assurance Plan
White Mesa Mill
Field Data Worksheet For Groundwater
Location ID TWN-21 Sampling Program Nitrate Quarterly
Field Sample ID TWN-21 10262022 Sampling Event 2022 Q4 Nitrate
Purge Date & Time 10/25/2022 9:16
Sample Date & Time 10/26/2022 8:45 [sampler TH/DL
Purging Equipment Pump Weather Conditions Sunny
Pump Type Grundfos External Ambient Temperature (C) 3
Purging Method 2 Casings Previous Well Sampled TWN-20
Casing Volume (gal) 19.23
Calculated Casing Volumes Purge Duration (min) 3.49
pH Buffer 7 .0 7.0 Well Depth (ft) 108.65
pH Buffer 4.0 4.0 Well Casing Diameter (in) 4
Specific Conductance (micromhos) 1000 Depth to Water Before Purging (ft) 79.20
Conductivity Dissolved
Date!Time Gallons Purged (gal) (umhos/cm) pH (pH Units) Temp (deg C) Redox (mV) Turbidity (NTU) Oxygen(%) Before/After
10/25/2022 9:17 11.00 3791 6.60 14.74 382 0 97.8
10/26/2022 8:45 3770 7.25 14.42 Before
10/26/2022 8:47 3778 7.26 14.21 After
[volume of water-.p~rged (gals) 27.50
Pumping Rate Calculations
Flow Rate (Q = S/60) (gal/min) 11.00
Time to evacuate 2 Casing Volumes (min) 2.50
[Final Depth to Water (feet) 98.30 Number of casing Volumes 1.43
Volume, if well evacuated to dryness (gals) 27.50
Name of Certified Analytical Laboratory
AWSL
Analytical Samples Information
Sample Container Preservative
Type of Sample/Analysis Collected? Matrix Number Type Sample Filtered? Type Added?
Chloride y WATER 1 500-ml Poly u None
Nitrate/nitrite as N y WATER 1 250-ml HOPE u H2S04 (pH<2), 4 Deg C
Comments:
Arrived on site at 0912. Purge began at 0916. Purged Well for a total of 2 minutes and 30 seconds. Purge ended at 0918. Water water clear. Left site at 0921 .
Arrived on site at 0840. Depth to water was 79.09. Samples bailed and collected at 0845. Left site at 0847.
Signature of Field Technician
~~
N
y
Groundwater Discharge Permit
~
-.
. __;~----~ :c .•·
~..--~YFUEZ.S . . .
Groundwater Monitoring Quality Assurance Plan
White Mesa Mill
Field Data Worksheet For Groundwater
Location ID TW4-22 Samplin9 Program Chloroform Monitoring
Field Sample ID TW4-22 11302022 Sameling Event 2022 Q4 Chloroform
Purge Date & Time 11/30/2022 9:01
Sample Date & Time 11/30/2022 9:02 !same_ler TH/DL
Purging Equipment Pump Weather Conditions Sunny
Pump Type Grundfos External Ambient Temperature (C) -4
Purging Method 2 Casings Previous Well Sampled TW4-24
Casing Volume (gal) 29.26
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) 69.89
Conductivity Dissolved
Date/Time Gallons Purged (umhos/cm) pH (pH Units) Temp (deg C) Redox (mV) Turbidity (NTU) Oxygen(%) Before/After
11/30/2022 9:01 4899 6.12 15.90 465 0 20.5
Pumping Rate Calculations
!Volume of water purged () Flow Rate (Q = S/60) (gal/min) 16.00
Time to evacuate 2 Casing Volumes ()
jFinal Depth to Water (feet) 93.24 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 HDPE u H2SO4 (pH<2), 4 Deg C y
Comments: I Arrived on site at 0858. Samples collected at 0902. Water was clear. Left site at 0904.
Signature of Field Technician
---'\ . ./:: ./ ---_) ,.,,,.·,c~-/-;/--._/,~,?)
Groundwater Discharge Permit
~
-'· e ··t£·' . -'· ___ •. ;:· ,.~·--· ...
', ...... ~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 11302022 Sampling Event 2022 Q4 Chloroform
Purge Date & Time 11/30/2022 8:54
Sample Date & Time 11/30/2022 8:55 !sampler TH/DL
Purging Equipment Pump Weather Conditions Sunny
Pump Type Grundfos External Ambient Temperature (C) -4
Purging Method 2 Casings Previous Well Sampled TW4-25
Casing Volume (gal) 30.12
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) 68.67
Conductivity Dissolved
Date!Time Gallons Purged (umhos/cm) pH (pH Units) Temp (deg C) Redox (mV) Turbidity (NTU) Oxygen(%) Before/After
11/30/2022 8:54 3941 6.49 14.99 468 0 19.4
I Volume of water purged()
Pumpin.9. Rate Calculations
Flow Rate (Q = S/60) (gal/min) 16.00
Time to evacuate 2 Casing Volumes ()
!Final Depth to Water (feet) 72.50 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 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 0850. Samples collected at 0855. Water was clear. Left site at 0857.
Signature of Field Technician
~ ' /,, -: / ....___J ,, ',,,. /L.., --~"-->I'.'. d,. )'j
Groundwater Discharge Permit
~ . St£ • • • '' --·, --,· 1_ . ;
.:....•_ _.··.-i _,· Ei"-JER!GY~
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 11302022 Sampling Event 2022 Q4 Chloroform
Purge Date & Time 11/30/2022 8:44
Sample Date & Time 11/30/2022 8:45 !sami>_ler TH/DL
Purging Equipment Pump Weather Conditions Sunny
Pump Type Grundfos External Ambient Temperature (C) -4
Purging Method 2 Casings Previous Well Sampled TW4-21
Casing Volume (gal) 43.54
Calculated Casing Volumes Purge Duration O
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) 70.02
Conductivity Dissolved
Date/Time Gallons Purged (umhos/cm) pH (pH Units) Temp (deg C) Redox (mV) Turbidity (NTU) Oxygen(%) Before/ After
11/30/2022 8:44 2563 6.75 15.00 465 0 32.0
Pumping Rate Calculations
!Volume of water purgedj) Flow Rate (Q = S/60) (gal/min) 12.00
Time to evacuate 2 Casing Volumes ()
[ Final Depth to Water (feet) 83.12 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 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 0841 . Samples collected at 0845. Water was clear. Left site at 0847.
Signature of Field Technician
~ ,,c,._,•,~--,J-:/: (/.;r.,;)
Groundwater Discharge Permit ~-·a--F.::.. ··. . . , . ~
. __ _:.· '-,--;:-' ~y
Groundwater Monitoring Quality Assurance Plan
White Mesa Mill
Field Data Worksheet For Groundwater
Location ID TW4-60 Sampling Program Chloroform Monitoring
Field Sample ID TW4-60 11302022 Samplin9_ Event 2022 Q4 Chloroform
Purge Date & Time 11/30/2022 8:09
Sample Date & Time 11/30/2022 8:10 [sampler TH/DL
Purging Equipment Pump Weather Conditions Clear
Pump Type External Ambient Temperature (C) 20
Purging Method 2 Casings Previous Well Sampled N/A
Casing Volume ()
Calculated Casing Volumes Purge Duration O
pH Buffer 7.0 7.0 Well Depth (ft)
pH Buffer 4.0 4.0 Well Casing Diameter O
Specific Conductance (micromhos) 1000 Depth to Water Before Purging (ft)
Conductivity Dissolved
Date/Time Gallons Purged (umhos/cm) pH (pH Units) Temp (deg C) Redox (mV) Turbidity (NTU) Oxygen(%) Before/After
11/30/2022 8:10 1.5 7.06 15.30 474 0 20.2
Pumping Rate Calculations
l\l_olu_me of water purged() Flow Rate (Q = S/60) ()
Time to evacuate 2 Casing Volumes () I Final Depth to Water (feet) 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 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:
[rn same_le was collected in the lab at 0810. Left site at 0814.
Signature of Field Technician
~ . ,,,,,-~~ ""''-'.-~-/-/-:_.!!~ ·?)
Groundwater Discharge Permit
Groundwater Monitoring Quality Assurance Plan
White Mesa Mill
E1YEJR!JG' y~ Field Data Worksheet For Groundwater
Location ID TWN-60 Sampling Program Nitrate Quarterly
Field Sample ID TWN-60 10262022 Sampling Event 2022 Q4 Nitrate
Purge Date & Time 10/26/2022 7:04
Sample Date & Time 10/26/2022 7:05 [sampler TH/DL
Purging Equipment Pump Weather Conditions Clear
Pump Type External Ambient Temperature (C) 0
Purging Method 2 Casings Previous Well Sampled TWN-03
Casing Volume ()
Calculated Casing Volumes Purge Duration ()
pH Buffer 7.0 7.0 Well Depth {ft)
pH Buffer 4.0 4.0 Well Casing Diameter O
Specific Conductance {micromhos) 1000 Depth to Water Before Purging {ft)
Conductivity Dissolved
Date!Time Gallons Purged {umhos/cm) pH (pH Units) Temp {deg C) Redox (mV) Turbidity (NTU) Oxygen{%) Before/After
10/26/2022 7:04 4.0 7.46 16.97 434 0 17.0
Pumping Rate Calculations
Jvolume of water purged{) Flow Rate (Q = S/60) ()
Time to evacuate 2 Casing Volumes O I Final Depth to Water (feet) ·I 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?
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:
[ Di S~mple collected in the lab at 0705.
Signature of Field Technician
~~~
Groundwater Discharge Permit
F-,,~ Groundwater Monitoring Quality Assurance Plan
White Mesa Mill
Field Data Worksheet For Groundwater
Location ID TWN-65 Sampling Program
Field Sample ID TWN-65 10262022 Sampling_ Event 2022 Q4 Nitrate
Purge Date & Time
Sample Date & Time 10/26/2022 8:30 !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)
Dissolved
Date!Time Gallons Purged Conductivity pH Tem_e_ Redox Turbidity Oxygen I Before/After
Pumping Rate Calculations
[volu_me <>f water pur_g_ed () 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?
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:
[ Duplicate of TWN-20
Signature of Field Technician
-:3~~
TabC
Kriged Current Quarter Groundwater Contour Map, Capture Zone Map, Capture Zone Details Map, and
Weekly, Monthly and Quarterly Depth to Water Data
Name: Tanner Holliday, Deen Lyman
8/15/2022
Depth to Depth lo
Dale Time Well Water (fl.) Dale Time Well Water (ft.)
11/17/2022 1455 MW-01 65_08 11/17/2022 857 MW-04 82.35
11/17/2022 1214 MW-02 109.65 11/17/2022 901 TW4-0! 101.06
11/17/2022 1005 MW-03A 83.90 11/17/2022 854 TW4-02 99.63
11/17/2022 1229 MW-05 108.08 11/17/2022 837 TW4-03 65.60
11/17/2022 1445 MW-II 85.33 11/17/2022 905 TW4-04 82.56
11/17/2022 1224 MW-12 109.53 11/17/2022 830 TW4-05 72.85
11/17/2022 1312 MW-14 101.55 11/17/2022 91 I TW4-06 80.20
11/17/2022 1303 MW-15 105.27 11/17/2022 845 TW4-07 82,39
11/17/2022 952 MW-17 72.18 11/17/2022 841 TW4-08 85.51
11/17/2022 1436 MW-18 73.83 11/17/2022 827 TW4-09 70.93
11/17/2022 1427 MW-19 66.15 11/17/2022 824 TW4-IO 70.37
J 1/17/2022 1208 MW-20 89.27 11/17/2022 849 TW4-II 90.41
11/17/2022 1145 MW-22 66.35 11/17/2022 1013 TW4-12 56.55
J 1/17/2022 1220 MW-23 115.28 11/17/2022 1009 TW4-13 57.82
11/17/2022 1147 MW-24A I 10.37 11/17/2022 1002 TW4-14 77.51
11/17/2022 1145 MW-24 109.21 I 1/17/2022 1027 TW4-16 74.39
11/17/2022 1433 MW-25 82.15 11/17/2022 739 TW4-18 74.06
11/17/2022 1438 MW-26 84.29 I 1/17/2022 1400 TW4-19 72.04
11/17/2022 1141 MW-27 58.79 11/17/2022 735 TW4-21 72.25
11/17/2022 1152 MW-28 74.60 11/17/2022 813 TW4-22 70.70
11/17/2022 1155 MW-29 106.91 11/17/2022 919 TW4-23 76.79
11/17/2022 1049 MW-30 75.51 11/17/2022 810 TW4-24 69.69
11/17/2022 1044 MW-31 69.75 11/17/2022 745 TW4-25 69.95
11/17/2022 1040 MW-32 82.93 11/17/2022 915 TW4-26 75.06
11/17/2022 1246 MW-33 DRY 11/17/2022 934 TW4-27 79.45
11/17/2022 1254 MW-34 107.25 11/17/2022 1017 TW4-28 49.58
11/17/2022 1235 MW-35 112.35 I 1/17/2022 957 TW4-29 79.36
11/17/2022 1241 MW-36 I 10.52 I 1/17/2022 938 TW4-30 75.45
11/17/2022 1301 MW-37 107.66 I 1/17/2022 941 TW4-31 76.43
11/17/2022 1159 MW-38 70.13 11/17/2022 1020 TW4-32 57.32
11/17/2022 1152 MW-39 64.39 11/17/2022 931 TW4-33 79.08
11/17/2022 944 MW-40 79.68 11/17/2022 949 TW4-34 77.67
11/17/2022 953 TW4-35 75.98
MW-26 = TW4-15 11/17/2022 1006 TW4-36 58.87
MW-32=TW4-17 11/17/2022 816 TW4-37 71 .95
Comments: 11/17/2022 834 TW4-38 60.70
I 1/17/2022 820 TW4-39 70.60
11/17/2022 923 TW4-40 72.34
11/17/2022 908 TW4-41 89.17
11/17/2022 928 TW4-42 70.96
11/17/2022 945 TW4-43 73.64
Date Time
11/17/2022 930
11/17/2022 925
11/17/2022 801
11/17/2022 1036
11/17/2022 1033
11/17/2022 742
11/17/2022 749
11/17/2022 753
11/17/2022 757
11/17/2022 1432
11/17/2022 1436
11/17/2022 1422
11/17/2022 1417
11/17/2022 805
11/17/2022 1410
11/17/2022 1445
11/17/2022 1448
11/17/2022 1354
11/17/2022 1349
11/17/2022 1055
11/17/2022 1342
11/17/2022 1337
11/17/2022 1333
11/17/2022 1023
11/17/2022 1016
J 1/17/2022 1011
11/17/2022 1323
11/17/2022 1328
11/17/2022 1318
11/17/1022 1304
11/17/2022 1300
11/17/2022 1221
11/17/2022 1309
11/17/2022 1255
11/17/2022 1313
Well
PIEZ-01
PIEZ-02
PIEZ-03A
PIEZ-04
PIEZ-05
TWN-01
TWN-02
TWN-03
TWN-04
TWN-06
TWN-07
TWN-14
TWN-16
TWN-18
TWN-19
TWN-20
TWN-21
DR-05
DR-06
DR-07
DR-08
DR-09
DR-JO
DR-II
DR-12
DR-13
DR-14
DR-15
DR-17
DR-19
DR-20
DR-21
DR-22
DR-23
DR-24
Depth to
Waler (ft.)
67.02
45.98
55.77
68.69
67.16
70.16
58.81
43.80
62.85
80.68
80.56
59.42
47.84
62.96
54.51
78.18
79.18
83.15
94.13
91.72
51.22
86.55
78.37
97.88
DRY
69.51
76.15
92.81
64.64
63.25
55.40
100.49
DRY
70.51
44.53
Weekly Inspection Form
Date lo-?t-U Name De.:.:z G::: trno••-;.:: '•-cc tf«tt:tfr
vstem Operational (If no note ·
Time Well Depth* Comments anv oroblems/corrective actions)
ID~§"' MW-4 ~1 ~o Flow ,., 0 ~ No
Meter ~4 I ~ I L.f I) /,, D ..... No
11l O I MW-26 jQ .'1'1 Flow II# /J .. No
Meter "1 ""--1 ,A 1 '-l q '!Ill No
1--i._1:i.2 TW4-19 ~/) q-r_ Flow I I-. tJ 11111g No
Meter ~ ':Fi fa "1 /jA '1-s\ ... No
I \ '"I (,. TW4-4 ,n, ".1r.. Flow I/,. 4 '--No
Meter -wr ~ 79. '2i ,q ~ No
l)C\ 1 c:( TWN-2 ,. I.. /,. f Flow It. I () ....,_No
Meter , ,_ 1 -, ~, i..1 -i .._ No -
nq-,,~ TW4-22 I,.~. 2 ~ Flow 1 '1, '-I .... No
Meter q , q q -, 1A , ~ -No
oq~:a, TW4-24 t. -,_'-IA Flow I I., /J ~ No
Meter 2 n D :1 /,. 4 ..., ~ ... No
o~n-, TW4-25 ~q ,-,,:, Flow J'°n /,. ... No
Meter , "'ll :1. t. c;z., /) or., -No
ID'-11 TW4-1 10,;', ,~ Flow 1-:i. 0 .... No
Meter .., oq ~<IJ.q, 'l .. No
l n-, I. TW4-2 ,n'-1 Qt Flow It:;'_ I? a. No
Meter <n" t: -:a..1 4 ,_ No
IDII TW4-11 QI). 17 Flow tt:'.. ,;( ... No
Meter 1 , 11 n a-1 ~ .. No
OS'1q TW4-21 "1 ,_ '-I 'f Flow //.. -:::z. .. No
' Meter ~ tc;" ,_:1. 7,. ~ o ... No
oq ►ILI TW4-37 /..9. IJ I. Flow I c:t_ n ,_ No
Meter ~ ~ ~ 7 (')-,-, :i. ._ No
OC\53 TW4-39 ~"' r:; I, Flow ,~.o ,.._ No
Meter -q Oi'-l n ,:-"l < ... No
II.;°'~ TW4-40 -,~ .-:c~ Flow ,~.n .... No
Meter , r,-, q ~ n -, _ 1 ~ --No
LOI('-/ TW4-41 ~q,i1 Flow /,. /J .. No
Meter 1-1 o q ~ 'i .. , , ':h ~ ,.. No
Operational Problems (Please list well number):
Corrective Action(s) Taken (Please lisfwell number):
* Depth is measured to the nearest 0.01 feet.
Weekly Inspection Form
Name
Time Well Deoth* Comments
I I) -:1,< MW-4 ~1,t;-ll Flow t../ {)
Meter -,, ~ 1 q q -1 ~ qo,
,nn4 MW-26 9-., ?.. i Flow I/,..()
Meter 7 --i ~ 1 .:: , n
I I r:;' I TW4-19 ,-?.,."1'1 Flow I/., /) . Meter ~'1, n .. i Q ~n
In '-ii;' TW4-4 ~4, /1 Flow / l, /,,
Meter 9t , q y 7 ~ . n
1)91/,. TWN-2 ( ~ 4-1 '-I t-( Flow It,, fJ
Meter /f11J.q'J..1,Cf?,
(,)q4.1 TW4-22 ,._ 9. n '-i Flow JI. 4
Meter 9 :l..\ (~~~ I
I() q -;:..i TW4-24 /.,Of . '1 () Flow /(',. ;J..
Meter -:, n n 11 /'J 1 '-I ~
nq,-, TW4-25 r.;·q ,.hr;;-Flow 1·::1.0
Meter , -,, ~ '-I In '-J. S? q
,o ~, TW4-1 i f) I / (,.. Flow I -,... , 4
Meter 4 I n I i:; :J... :J...
f /) 11 TW4-2 /flt~.-:;;:;' Flow 11~ n
Meter ~--1F, t;"o 9. ·-;;
I OU TW4-11 qn,I I Flow Jl-j .~
Meter 1 1 ., i .2 • r.. ,
l}qQq TW4-21 --11. J..~ Flow )/ .. "1
Meter _":\ \ t. :1 ~ '\ ½, /,, /,.
(JQ-,:/') TW4-37 ,-,.. -, a.~ Flow I 9. n
Meter .l. 14 o I C\ ~ , ~
()qt;'~ TW4-39 -,~.:11 Flow I "i'> /J
Meter q ~ -, c;-1:. cg -;
,0<1 TW4-40 -,--,. g:1_ Flow I -;l 0
Meter 1 () 9. 1 LC\ {,, 1 ,
In :J..9i TW4-41 (,,{<:i ~/J Flow /,,, 0
Meter ~ 1 n l r;fJ c;-4
Operational Problems (Please list well number):
Corrective Action(s) Taken (Please list well number):
ystem Operational { no note
anv oroblems/corrective actions) ,.,_ No
'le No
4911g No
1ffia1 No
'Ills No • No • No
1:ls No ..... No
'9a No .. No
,Bis No ... No ... No ~ : ~.
"!ta No
'Tis No
~ No .. No
-155 No ,. No
• No
'es No .. No
~ No
~ No .. No
llM No .. ... No ,_ No ..... No ... No ... No
----------------
* Depth is measured to the nearest 0.01 feet.
Weekly Inspection Form
Date Name Ueos v:1r-i. ,.---,_-tl-(4z
System Operation1Hf no note
Time Well Deoth* Comments anv problems/corrective actions) -
0 9"1 ,;' MW-4 fl.\ <' "1 Flow 4.0 .... No
Meter ~ 1.1 :i ,. q 7 -r-. J ? ,.. No
aq 2-r.1 MW-26 «"f '1. (. Flow I( •• () .. No
Meter -r"f"1~12 q .. No
'"""' fl
TW4-19 ..,,., "',:--Flow 1/4 0 -No
Meter ~~.,.~ f?/ <;('i'" • No
I IJ/1/,. TW4-4 ~"7o-.'-I~ Flow , , ... 1 -No
Meter ~ 1 n , q ~ ~ .... No
IDlill:'"1 TWN-2 <'4.4tl Flow J /,. '.2 ,... No
Meter , , .. 1.-1 , ~ "1 • .., 'l. ... No
"q()~ TW4-22 (.q "1~ Flow 1 IA.n .... No
Meter q 1 -; ~ .,, ,;-, ,;-... No
nqn"?, TW4-24 ht;f -::t~ Flow I I'.. "I ... No
Meter '2 /'I I I ""1 (,. 51 . q ,;'" ... No
O~;'l. TW4-25 /',. r. ~ "' r, Flow ,n.~ ,_ No
Meter 114 ""~q ..,~ ,_ No
.,. n qt:; I TW4-1 ,n,. ? ~ Flow I '2 CJ.
,., No
Meter .., , n ,,. ~q. ,;-..... No
!
1nq-J.., TW4-2 qq.tt-1 Flow Ir;-_ 'i 'TIii No
Meter trtu:.~~" "it .. No
~
1nq~n TW4-11 qn tGI Flow ' r;: (r, 11'-No
Meter , , 4 .1 ., n ~ ... No
/)9,i,/r:;" TW4-21 7 /,. i;'"-i, Flow I f •• 1-f -No
Meter -2, 11.Q ~ 1, ~"' ... No
nqp.,t TW4-37 "'f L n Q. Flow , "it /} .. No
Meter "I "1 ~ -2, 2. ~ .,_. ~ 1aE No
oq1q TW4-39 -ra.-f r,o Flow I 4.. n .. No
Meter qqq,-,7 n 'as No
,n11r TW4-40 -,'l. "2,'1 Flow ,~ I') .. No
Meter , n ~ c -, ..: , , .. 1 .... No
(}q;-11 TW4-41 Cj(.q Ii Flow [',,. /) .... No
Meter ~ 1 1 n 'l. ·.Hf L\ ... 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,
T. 1me W II e D th* ec C t ommen s an~ ero
nq~q MW-4 ~~.to Flow ,,, 0
Meter ::14/ -r. ~ f,. -:an.~ t
l]q.,1 ~ MW-26 ~.,. ~ 7 Flow ,~ n
Meter 7'-1 qr,, r. 1, ~
H '-I ,;--TW4-19 ....,~. ~°" Flow J ~ '!I
Meter ~ 1 .. t:1. ::z q ~ r .. ~
I(} 2#/l TW4-4 9. '• I 31 Flow JI',. 0
Meter s, ~ nQ qo_ t,.
nta-,. ,_ TWN-2 <'q,~ Flow 11,,, n
Meter //.. ~LI <II, 7t:. ,
Di~ct TW4-22 ~q,9,-2, Flow /L. /)
Meter q,~_l;"'n ct~ .ct
Oflli'"I TW4-24 I:. q I 11:. Flow /t..O
Meter ~/),~--a. ~ , . ::2 ,::
l161. .1 I'. TW4-25 /,,q.~,;-Flow /{),~
Meter 1,'l"Jfq~~.,.,q
,n nq TW4-1 ,ni; 2.~ Flow I 'I. • <;{
Meter l,(Jt~w.-7
oq,;:-o TW4-2 I1n,orr Flow I/,,. t)
Meter r;/J -i"I -.:i. !2 ,;-
~Cf.,_,n TW4-11 ~~ "1q, Flow I I';". l.
Meter , , c: ~ ~ '4 -~
O'l I« TW4-21 71.. ,qi) Flow 1/ __ f)
Meter ~ , ~,. :2 ,, ~. , ,
nllf)t, TW4-37 t.11..~/J Flow ,q. n
Meter :a .. u,-1-113 1..
oqiq TW4-39 -,1../,_T"f Flow ,-a n
Meter , nn ::z ~o~, ~
In"'< TW4-40 -, '.'.]. ~c;r. Flow ,«.IJ
Meter , ,, o,,, .1,0.q n c:.-
1/0/q TW4-41 gq_,fi Flow /,,, 0
Meter 41 t ~ r: '1. 6"'1
Operational Problems (Please list well number}:
Corrective Action(s} Taken (Please list well number}:
*:Pe~t~ is measured to the nearest 0.01 feet.
bl ems corrective actions}
.1ls, No .... No
=--No ,._ No ,.. No .. No .. No
'-5 No .. No .,_ No ,_ No .... No .. No ... No
'las No ... No .. No .... No .... No .... No ... No .. No
1111!!-No .,_ No ... No
~ No .. No ... No
~ No
11a: No
!is No
..__No
Date
Weekly Inspection Form
Name ,·
Time Well Depth* Comments anv problems/corrective actions)
J n '-I-,. MW-4 ,(a.f ,~ Flow '1,0 'liE No
Meter ":l~'-10~ 1q, 13 ... No
,n:i :J.. MW-26 jfL,. jtg Flow 1"1,'1 .. No
Meter -r~ 1 gf}q,q .. No
I~ Ir TW4-19 ..,r;-'-{~ Flow I '7 ~ las-No
Meter '3 -i ~ q .r; .t,, ~~ le! No
II~~ TW4-4 f( '{ 'f~ Flow lln,f') "SI& No
Meter Q. '.1 r r; t,. ,:; ~ ,.. No
nq:rt TWN-2 .r; SJ ~/) Flow I '-I q ,.. No
Meter , t,,. ,. r •. "In .n ~ ... No
1oqt.J~ TW4-22 t.9.. ()0 Flow (~ (A ,.. No
Meter q ~ r. 7 n q ~ .. No
nqq~ TW4-24 t:.i.rl Flow I(. () -No
Meter :, o ::i P-1 ~ ,;-, ~" -.s No
nCltt> TW4-25 ~o.air Flow In. a. .... No
Meter l "1.C" I..~~ I, II ,._ No
10'-I~ TW4-1 100.'7.I Flow 12 ~ '11M No
Meter '-1111&.(Q t;"° ,._ No
ID.,_'T TW4-2 1n1.1.n9i Flow ,~ S!. .. No
Meter ~ n9.. 11 -, t:.. • 1. WI&-No
1n1 ~ TW4-11 ~ct. I~ Flow It.I.~ -No
Meter , , /. -:i '-I • r,. '.:I ... No
nqa::i TW4-21 71'. ~" Flow JI •. o, .... No
Meter":l1-R~q-,~ nq ,_ No
nq1-1q TW4-37 /,.~ o,,,-Flow 17,"/ --... No
Meter .2 ".1 _&.f q ,;-n ~-, 1IS No
r,q[;'t, TW4-39 -,~ I '-{f( Flow ,~.o .... No
Meter 1nnl./tn&.1 .:t ... No
I~ fl3 TW4-40 ;,:;-, '-I~ Flow I t;l. D ... No
Meter IDG Lf I In ":l. /,. • No
Jlt:;n TW4-41 ~B '/7 Flow ,:. . {) .. No
Meter '-I 1.191q "2t CJ>"' ... 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 t0-3\: oA-Name Duo G--t,;rrl"-A( ,;;;;,,« f{p(!,'3/
Time Well Depth* Time Well Depth*
LQ~3. MW-4 3~dS ,~,~ TWN-1 711.. ~IJ
Ll5:..Q TW4-1 gS, "-l"'1. IJ'l.::A1 TWN-2 ~l~/fJ
n~a:r TW4-2 :£$',.r£(} 1 'i 13 TWN-3 'i 3, 30 •
L3aa TW4-3 fl_{..-f ~ ,~01 TWN-4 ,3,35
J ['5''7" TW4-4 S"fi.'1L:i 1325': TWN-7 !'i, '15' .
l31Z TW4-5 1.~.03 '!:10:L TWN-18 ''312-0
J2.is.~ TW4-6 sa.11..1 13~/J MW-27 !~.90
L:1.S.~ TW4-7 fS.l,Ql l3~3 MW-30 1~t 5.1
1~si TW4-8 1~113 l331 MW-31 ~2.8~
l309 TW4-9 7ltl3
l 3 a.t TW4-10 ZtJ... s:::a:
H23i6 TW4-11 ~~. lu,
L 1. ,;i_::z TW4-12 s:,t~!
t.a.a~ TW4-13 S'l, i 2 l1.J ~ TW4-29 19.~S
l '--18 TW4-14 7..71 ?,,~ 1102. TW4-30 Jt;.~I
lO fl. a MW-26 Z~u -,,a 1 l a:;"'9 TW4-31 l(,,.1 ~ ,_,
.,i.3.:2.5' TW4-16 i':/.c5 S !233 TW4-32 ~1.~l
l:33·a MW-32 S~1IO 112 ?a TW4-33 :zg .i.a
(~ 2-3 TW4-18 7'1, 2.,1 ,,., . TW4-34 11.1a •
13 JC TW4-19 '::/.15',-~~ J 2..05'-· TW4-35 7f4,,QO
a~o.2. TW4-21 ~r;.. ~!:I.. l A-2. \ TW4-36 ;"S.9~
(]~~~ TW4-22 (,,_<?JJJ() 0~"1~-TW4-37 Ga~.o5"
t;J. ,._,~ TW4-23 7,,s, ,~o-, TW4-38 6:iQ,19
o~3."l TW4-24 (.aid! ae,~~ TW4-39 '3.'S.c~:S
09lD TW4-25 so,o< l ;z Q,3 TW4-40 ,~!:/_~
l '--':l. a TW4-26 1~. l t. l(~ TW4-41 s_g_,.~7-&I~, TW4-27 1~130 l I '-19 TW4-42 1 l. I '"l 'a,, TW4-28 '1~L q':C 12.08 TW4-43 73, <,2
Comments: (Please note the well number for any comments)
* Depth is measured to the nearest 0.01 feet
Weekly Inspection Form
Date u-1-2,a
1svstem OperatioaHlf no not
Time Well Depth* Comments anv problems/corrective actions)
JO .!l.."4 MW-4 ii~ t',~ Flow 1.1./J ... No
Meter ~ 'i ~ 7 '7 ~ 7. t;" :,,. ~ No
IOO'l. MW-26 .,.~,q:a,_ Flow If. :l .. No
Meter 7&:'~ I ~n :i. • No
Ir·~~ ::l. TW4-19 -r ~ t; '-1 Flow Jl •. fl
,_ No
Meter A st q ?, q D • ~ Sl ---No
f IJ"',:; TW4-4 9. ..,, ,:-n Flow /6,,.1 ... No
Meter ~ '1 '.2 ".l ~ ;-• /. -No
nq~"' TWN-2 4§t ~-I &.I Flow UAo /) ..... No
Meter , ~ 7., Lt "l q~ Wis No
\,
0'11./ 1 TW4-22 t .. t, OS° Flow ,1.., n ,_ No
Meter q-:1..c:,.qo'f,r-195 No
oq~a.f TW4-24 1,,q,~2 Flow I ~.fJ -!11;1. No
Meter :J.O".l_Sto2-q.~~ -=..,_ No
oqo4 TW4-25 t,.q ,.,~ Flow ,n.~ '9111s No
Meter I ~ ( .. "2,, 'T,t '1_nt.. ..... No
ID-~ I TW4-1 J {) l:j .l. :I Flow I :2. ,'R ... No
Meter '-I I ~c;( I I .::t. ,._, No
IO I fl TW4-2 ,n-,.,~ Flow N' •. ~ .. No
Meter ,:nq~ 1 ?.. ~ .. No
II" I TW4-11 Cjl~ ..,,;-Flow la../ ~ ... No
Meter , , 7 '37 c,r,,. ... No
....
o~~.3 TW4-21 "'1/. ".l~ Flow Jfa."{ .... No
Meter ~ 1 ~ q ~ , ~ , '1 -No
oqt:;a TW4-37 t'..7. 7~
, Flow k-No JSif.JJ
Meter -:.2-:Jt: 2-r'-111. n 98 No --
0 qt;'(. TW4-39 "114 I 2 .c;' Flow }'1-:.l'J .... No
Meter , n n 7 ~ ~q . ~ 'las No
,o'i'3 TW4-40 -,~ ~,;-Flow • ~ /'J ... No
Meter 1oq111n.~t:' ... No
JD '3~ TW4-41 4ilq,G\,;" Flow , .. {) .. No
Meter .... , "2-7~s.,.-, ,_ 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 Q,4 c-rmr2
System Operational (If no note
Time Well Deoth* Comments anv problems/corrective acUons)
"r; ~ MW-4 ~,~_,;7 Flow "'. IJ
,_ No
Meter ~ l.J i;-t; 1. ~sr 9.1..4 ... No
ll) ... « MW-26 ..,~ .~ Flow It. "f '&lg No
Meter -, < t;; '1--1 '1. .Cf ,_ No
1:it:o TW4-19 ..,,,,,_ ~~ Flow JI,. fl • No
Meter 1...4 n , w r: -r. ~ 1 ... No
J 2 \/) TW4-4 ~t-.r.:Z Flow It •. {} ... No
Meter ~ 1.'?i n 7 n -R las No
1011;' TWN-2 7g 1.9 Flow If~ n ... No
Meter 1 ,q Jqq. 1 t "Wig. No
,n~tr TW4-22 /,.g,~~ Flow I/,. .n ,._. No
Meter q ~ n 4 t;"'~ .-r ~,No
1D2.fJ TW4-24 ~q.q, Flow ·, {,. :J ---No
Meter 2 o '2, ~ -r ~ 1.. "I "2 ,.. No
ll'HO TW4-25 70 10 Flow I l).,t;( ,_ No
Meter , -i,..., '.1 n ; n. ~c;r .. No
,,c;-q TW4-1 q~ "1'1 Flow 12.~ ... No
Meter "' , -:i r:: 1,. ~ 2 .. No
Ill-\&;° TW4-2 qq (f ;J Flow 1 t..1 .. No
Meter .f" \ -o '-111. I '-No
1 ni:. < TW4-11 tt~.~A Flow 11..f.9. 'II& No
Meter , , ,z ,;-~.z.!t•~ 'Illig No
1n~n7 TW4-21 -,I;'_~~ Flow J,I_ ".2 .. No
Meter ~ 1 q 7c,gg, ,....n ... No
In ~I TW4-37 -in O I Flow JtA. n :-. No
Meter ~ '.l e::-I'-':l 1 ~ q -... No
10 "l i' TW4-39 "1.2.. .'-I{. Flow I~ fl "tis No .
Meter I D I O LI q I , '3 .. No
111-r TW4-40 7.2_, '..2.:2 Flow 17-~ .... No -Meter 1, n ~ n~ , .. .., q llla No
12.n,;-TW4-41 ~o oq Flow , .. {) ... No
Meter '-I, L\~O~.'M ...... 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 11-aa-aa.
System Operational (If no note
Time Well Deoth* Comments anv problems/corrective actions)
I :t .a:;"'-MW-4 ~.., ,,: Flow .., 0 -No
Meter ~"ft. l 1 t.1 7q ,_ No
I~ '-I I MW-26 71.. '.11. Flow I t. , '-I .... No
Meter 7 <g q :1 -1, ., ... No
,~,.,(" TW4-19 , .. q i,,fc;' Flow '(. 2. --No
Meter 1.1 1 1 q ~ 1. -:a. i.t 111111 No ,~,~ TW4-4 9./,. 7 f,,, Flow l C. c.f 11116 No
Meter ~ 'l -2, r. t> Sl • :l. ... No
1'11"'.l.. TWN-2 7~ ,/)/ Flow , 1a .n .... No
Meter , -, n "2.-;i: t:_ !\ o ... No
11.l."\ TW4-22 1.tc -,e;-Flow It. 2 ..... No
Meter q"31, "'1 &.f IA ... No
1'11-H TW4-24 1.q .i:rl Flow I l. /j !!a No
Meter :1 n '-f fl , 1 -, ".1.a:--¥es No
1.:int... TW4-25 "10.'-Cl. Flow l(_).g ... No
Meter , ?>7ct'i~ 1.«~ 11a No
11.A'1. TW4-1 1/l~ . .1~ Flow 1:2..~ ... No
Meter "' , ~ 1 t-.q n .... No
11.cr, TW4-2 q~_,1 Flow f , • ']'~-• No
Meter ,; , , -J. n .1 . , ... No
I "l 4 la TW4-11 qq ...,~ Flow I (/J 0 ..... No
Meter , , q ... , c;i "T t .. 11=5 No
'1.nf> TW4-21 '1-:\ \ {. Flow It.. I{ ... No
Meter_~~ lJ~'-l~t..._&;~ ... No
11 ~ « TW4-37 ~4 qi-/ Ffow .~ l) .... No
Meter ~ ., ,:-q 9. '.l q ~ ... No
12.3,: TW4-39 71.7~ Flow l'IJ.l> ,., No
Meter , a r "'1 .. &1 t,, .a ... No
,~:1.n TW4-40 ..,~ -~,;-Flow lfl ,0 ... No
Meter 11 o i;-1. ~<-'-1'1. 'Iris No
I ~OSi TW4-41 ~q ,o Flow 1A n .... No
Meter ~,,; 7 ?J ~. i a ... 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 , , -2,1-aa • Name
Time Well Depth* Comments anv oroblems/corrective actions)
049~~ MW-4 ""' I I Flow ""/. /J ... No
Meter'.-~'"'·~'-n-r. nn ... No
OCf f ~ MW-26 CH( I~ Flow ,1. n 1111, No
Meter -, 1. n ~ n 1,. , .. No
ID~r. TW4-19 -,~ ~, Flow ,,. {J . ~ No
Meter •J ::1. n-r I ~. •,Hl lllt No
Oq4.1.., TW4-4 ta~ Clq Flow ,,. n ,.. No
Meter ~ 1 .'12 ,.q .~ .. No
O~'f~ TWN-2 ~~.~n Flow J ~ 'iJ ... No
Meter , 7 , ~ "7 ~ • &./ q ... No
09.S't'. TW4-22 1-{. I.{"' Flow , ,. n --No
Meter q -,. ~ ct .2 2 .1. 11a No
0~ .... "l TW4-24 ·-/. f,'1~ Flow If~ ~ .. No
Meter ~n&:"/.1 ,;-,;-"'"' lllll No
10~~'-TW4-25 t:.Cf;~~ Flow ,,. n ... No
Meter , "' ~ .c;-~ ':17 '-I T .. No
0431 TW4-1 q~go Flow )~.~ ..... No
Meter ~ J Y ; ¥ ~ . q ... No
nq~r .. TW4-2 Q-1 ~c-4° Flow ,~ '-1 ~ No
Meter t;11n ~""-2 • No
nqj~ TW4-11 Qn n&.{ Flow u,. n .. No
Meter , .:1 11 ~ « ~ o ...... No
01·30 JW4-21 -r~_-,r Flow It:., 0 .. No
Meter ~.:1 .1 ,q s !1 -z.~ ..... No
nqn~ TW4-37 (.t.,r-~ Flow 17, ,g .. No
Meter 2.1~ ".l. 7-, -a,.~ ._. No
IOCltH1 TW4-39 -r6/ ~~ Flow ,~.n ,._ No
Meter 1 o I I' .... 4. q I;'. r .. No
oq~q TW4-40 -, ~, 1,.,:;-Flow 11' /) ... No
I Meter I I Os\(,. ~q ,t;""<' ... No
nq"' 2. TW4-41 «'I .,~ Flow "· n ~ No
Meter LI J r .. r;nn. "13 ... 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::z:::],a 4,.,,,. '?vdtAn
;;stem Operational (If no note
Time Well Depth* Comments anv oroblems/corrective actions}
n'A r;., MW-4 g:-,. 11 Flow L/ n ,_ No
Meter ~Y 15"5", 3 .1'~ .,_ No
n~ -,,7 MW-26 73 '\{,, Flow It;,, ~ ... No
Meter 7 r~ -:i.o 7 ~ c; ,._ No
11) I(',. TW4-19 ,~ q() Flow It •. {) ..., No
Meter I,./ -1, 1 '1 n /1 r 1 ~ No
nq"'.1'2. TW4-4 'R,., I,/ '-I Flow I /11. '-1 ---No
Meter ~ 'l._'-f'B "f "li ,q ._. No
09. n'-1 TWN-2 G, 1 :1 c:; Flow J "·. n .. No
Meter , 7 .2 r:; 7 ,2 77 !lie No
n~ 1 n TW4-22 /,.q _qn Flow / /,,. '.l ... No
Meter q °" r; 'l, "" (,.,. _I") ... No
n~,.1 TW4-24 "1~.DR Flow //.,. 1 ... No
Meter 'J.nt,, ~t;, ~:J. <"~ .,_ No
n7'5~ TW4-25 1.q, ,;-( Flow I() I~ ... No
Meter 11q:21 ... ~7> q7 'l=8 No
nqn t,. TW4-1 q /.,qs:r Flow , 'l ~ k-No
Meter ,_, , ,:; '-I q 1 , n ,._ No
n~I./GI TW4-2 //Jf) 101 Flow J fl. n ... No
Meter e;, -,, n .., n . ?. .. No
n 1< LI '1. TW4-11 ~Cl.l'>i. Flow l C:. I. ..... No
Meter , ".l 1 1 n . Y 7 ,_ No
n7<n TW4-21 7J;, '7,i;'° Flow ,~ ~ ,_. No
Meter -,,11 qt .. ~~ .'i"3 • No
n'R2t.. TW4-37 '"fD ~?, Flow ,~ 0 ... No
Meter -:i ~ "~ r.. n 1q n .._ No
lo~~ l TW4-39 '11 ~7 Flow ,~.() .._ No
Meter Io 1n"1~.., 1 ,._ No
nq::iq TW4-40 '1:l. fl) Flow JR n '11111. No
Meter , , , -::1 LI ~ ~ , 1 .... No
ne,,-, TW4-41 ~q .,~ Flow /4.IJ ... No
Meter "' , 'T a., o 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 Name Dnai. 6-/J'a:11,n • -&nu: Hal(,~,
S~stem Operationanf no note
Time Well Depth* Comments anv Problems/corrective actions)
/) "'1 '1. ( MW-4 ~~. "1~ Flow 4n .... No -Meter ~..,,;u.r:--tLn .., , ..... No
/17 I '!5 MW-26 ?'~ IQ-Flow I/... 0 .. No
Meter -,/_.,. J./ ~ ~ -, ~ No
, n ~n TW4-19 -z"' "t ~ Flow u,..o !1lllll No
Meter '-I l-f "1 15" ~ I HI ... No
n-r,:o TW4-4 ~ l 2q Flow I e::'_ /,. ~ No
Meter ~ :2 c; c::,nQ. It'" ... No
IA,.-'-/;; TWN-2 ..;-q_ n ~ Flow ,J.... /') 1111s No
Meter , ~'"' -::a. 'f ct~-,,~ 'la No
n/4 &: /4 TW4-22 JS.~ '!I.-, Flow J"-A --No
Meter oi -:a,-, cit",:;. ~ .. No
nt,. ,;r, TW4-24 ,.q, ..,,., Flow I/-~ 1 ... No
Meter !:l. n 9,. n 4 /4 n n :z. .:as No
n~"'ln TW4-25 ~ct. !J' Flow f '!J ,,.., .. No -Meter,",,,," 1 ~ "~ t,..L/ ... No
n-,~-, TW4-1 qq,~~ Flow I~ .ig --No
Meter J.t , t. "I n n l ... No
lJ., .2 /_. TW4-2 /l"l~ CH Flow 1 r,. n ... No
Meter ~ 1 '-ILfq ~. ~ '-No
07~1 TW4-11 ~~---'!l Flow I '-I • <1, !Illa No
Meter I -:1 -i.O ~ 1 l ~ No
/JI/.~~ TW4-21 7~ '3r Flow ~~~:!2 ~No
Meter ?t 2..3 J ~ sg. t CJ -No
/J-r/JJ TW4-37 70,/2. Flow 14.,(} ..... No
Meter ~2..-,, ~t;.i:;-; 4 9119 No
/170'1 TW4-39 ..., ,.,, ' /_ ,. Flow ,q_n ,._ No
Meter Joj_z;--~~,, r .... No
If') -t-s'fl TW4-40 ..,-~ .~L Flow 17. (,.. ... No
Meter ,, 11,t,11~.&-1~ 'lie No
I) -r'-1~ TW4-41 ~0.1 () Flow ~n ... No
Meter ,., , -;r ft> -2, ,;-t,, ~ -.is 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 ,2 ... 1,-n Nam~
If no note
Time Well Depth* Comments anv problems/corrective actions)
12 "l I MW-4 'l.-, q.., Flow ,.. t1 ..._No
Meter ".\"i~q1., ~ 'T '1 ... No
OQ LI -:\ MW-26 «~. qi:; Flow J /,. '-I ... No
Meter -, ~ 1'-18 n ~ ... No
l~1..~ TW4-19 7.., ·~ Flow I lo. n ... No
Meter 1.1,;'°.!I., ~/ .. JJ t. ,.. No
11 ,;' C. TW4-4 ~7>.t,,I Flow Ii." ,. No
Meter '8"1..2C\"'I ~ ,,.._ No
D~.;"q TWN-2 ~tJ l. I Flow I I.. {J .... No
Meter , '1.., q ~,; or.1,. ... No
ocu~ TW4-22 / .. Cf.,._.., Flow ,~ n ... No
Meter -q ">.OR~ ~n.~ 11111 No
Otff.0'1 TW4-24 1,,.1 50 Flow u. 1 .. No
Meter ~ n91.~LI,,., q~ ... No
/HtC ~ TW4-25 1 .. q, 'q Flow 1 ll.~ ... No
Meter , .., n t ... ~ ft'fl 11tq .. No
l"J.rl(. TW4-1 qq. t.'5' Flow I-,. ~ -No
Meter '-I I t. .., q '"' q .. No
I l °' c;'" TW4-2 Jt>I. YI.( Flow JIA.. n ... No
Meter ,: , a-1.,;,. no .t. .. No
1'2..~f\ TW4-11 ~q 1ll Flow ,,;."I es. No
Meter 123~0 '2.T 11k_No
0 9' "{ I{ TW4-21 ..,.., "2,'2. Flow Ila.I./ ll!a-No
Meter 3'.2":\1.fql1"'7,1H. 1lls.. No
nq1,l) TW4-37 'Tll. l'-1 Flow Ji, LJ, .... No
Meter "l.. -J. -f "l. -, -:2.i. 1 .. No
~
t)q ~ ti TW4-39 '"'11 f> I Flow J<r_n .,. No
Meter , n 1 l"'u" 1 I .... No
1-; l'r~ TW4-40 -, ' ~I .. Flow l'1..0 ,.,. No
Meter 11, q..,~ ~ c..?, ... No
l 2-.r;' I TW4-41 '2.ci\. 4.~ Flow f,. n .. No
Meter '-f J q ~ Ii""~ ~ q "lie 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 ,a-37 .... 24 Nam~4'rwac:t 76,_c Hof.'~
System Operationa(lf no note
Time Well Depth* Comments anv problems/corrective actions)
00\".1:ii MW-4 q'.2_ I~ Flow "'. /1 ,.__No
Meter -?..i./CI -rr.-rn '11 'lllllli No
oq:io MW-26 qi.( q1 Flow I/ .• n ._ No
Meter ., ,_ s..a i; 1. , .. ,_. No
IJL-tt:\ TW4-19 100.~, Flow It.. l'J ,.. No
Meter ,_, ,.:-:r9.<n .r;n 111111s No
IO t Li TW4-4 ~q r; t~ Flow II. 1./ ... No
Meter ~ 1. 1 .. q ~ '2, ".l "!Ill No
t>~ ""r .. TWN-2 -,7 '-~ Flow J (,.. '2 ... No
Meter , -, ,. 1 "1. n <U. ..:!tllJr No
lnqo,., TW4-22 ,O t.n Flow I r::' ~ .. No
Meter a,.11u. 71 n ~ No
(f9' r; 1 TW4-24 I.Sl,t.3 Flow I I'. 0 ... No
Meter ~ n q a.I H 19 .;a ,_ ~ No
082,9 TW4-25 ~q --, I Flow ,~ n .._No
Meter I &"1 I I-/ "'f /_~-.;(fl .... No
,,, n 1. TW4-1 ,n<.1-r Flow /~-~ ... No
Meter 1.11--rt.,{nn'"' 'Ills No
nq-z.2 TW4-2 11c:-r-2, Flow t I. 11 .... No
Meter ,:'f i: SI 'l 7. 1. ls No
nq17 TW4-11 qo o 1r, Flow l&.-4.~ w. No
Meter l'l~lt..f'2i.7/. ..., No
n~~, TW4-21 77.'-/~ Flow IC... '-I ... No
Meter -:r, :l.. '-f ~t-f -;'/ n I/ -No
IOctnc:t TW4-37 (.~./,.I:, Flow J 7 I/_ ... No
I Meter ,i ".I 7 ,_ .;i 1 "4. n ,.. l\lo
OCf It; TW4-39 SU). 14 Flow I (l ,n ,_ No
~ ;, . Meter , ,,, -:r, n () ~-,. ".1 ... No
,o,q TW4-40 -,3.~-; Flow ,~ n ... No
Meter , , '.2. ~ -,«l:"":3/,. WI& No
1noq TW4-41 q~ 1.9 Flow (,. 0 ,._ No
Meter "" "1 n 1 ,::i ~ q, --.is No
Operational Problems (Please list well number):
Corrective Action(s) Taken (Please list well number): ----------------
* Depth is measured to the nearest 0.01 feet.
Time
QC\°?):I
/003
0Cf3A-
/Df':f
JD&':i
12,Q"i
JIJ"l'I
iQt.f7
1()£0
l 6-l ':f
I ~l S5
0917
13 I!! ,,ca
1303
0,2-0
1011
·t0:2,0
/QQ"(
JC '19
01:l3
09Q'i
JO 3:r
OSf'.'t
oz"c,
/0'10
/637
1$11
Well
MW-4
TW4-1
TW4:..2
TW4-3
TW4-4
TW4-5
TW4-6
TW4-7
TW4-8
TW4-9
TW4-10
TW4-11
TW4-12
TW4-13
TW4-14
MW-26
TW4-1-6
MW-32
TW4-18
TW4-19
TW4-21
TW4-22
TW4-23
TW4-24
TW4-25
TW4-Z6
TW4-27
TW4-28
Depth*
,,.. 1$
(Q-$', 37
fl>'= 73
f,f'. ,.,o s,,,,.'I,
7/,'f/
71,9&
8;t, 2,0
f:'(,qQ
7fl,IS
,g.G,5'
go.01,
5'.' 6, .. ~ 5'.
£1', 1.'i"
77. ,7,'i
g':(.q'l..,.
7'f«3C
82..-"17
1'1,DS
I DO, J.,I
71, Sit,
'10,<,0 .,"'.~'
~1,63
"',-, l
1lf,S3
7,, Jl.4
'1!, tS
Time
!OOL
08':f t.
OCfS:'1
Qq':(g
0933
a.,..,5:
09-:>9
1030
102,3
J 2 S::"l
/l,. '-1 j.'
J a,,-i(
t3UJ
/6-~3
/ i,5"5'
J'Afi( '
/307
aero,
f"6:ff:
09l5'.'.
,o,c:i
tt7·Q'f
I ;l.3D
t~tliS .,
Well
TWN-1
TWN-2
TWN'"3
TWN-4
TWN-7
TWN-18
MW-27
MW-30
MW-31
TW4-29
TW4-30
TW4-31
TW4-32
TW4-33
TW4-34
TW4-35
TW4-36
TW4-37
TW4-38
TW4-39
TW4-40
TW4-41
TW4-42
TW4-43
Depth*
1£21
7:r,4,3
'1:l,3]
,,. 13
79.S:'3 ,2..,0
5ft. L:i 8
12: II
t,'l.'ft.
79-,l'::\
'7 S:,"
7'9· '3
§'"(. I 93
79•7~
77. 3S::
71;;:. (-l
:f'l,4\
l.9, G,,:
14,0.:3£
·go ►,':1
73,1p3
9'6,2,.tS
70,47
73, 39:
Comments: (Please note -the well number for any comments)
* Depth is measured to the nearest 0.01 feet
Weekly Inspection Form
Date l· 3 ... 3QR,3 Name p,,,00 G-iy ... 0 ~ ]..;...;._ Hotl:J,...,,.
ystem Operatio/a1 Clf no note
Time Well Depth* -Comments anv problems/corrective actions)
oq~'-"' MW-4 ~,. r:o Flow "'. n .. No
Meter "A,;-n'I ~ -:1 ~ o 1 .... No
loqnq MW-26 ~1 7~ Flow I{..() ... No
Meter 7-, ~-n :2. I',.. 3 ... No
i2'-1~ TW4-19 i't, ~ ~ Flow Jt,.n ... No
Meter "' '1 "f ".2. '-f L. 1-._ ~ .... No
/)Qt;,. TW4-4 ~1.41 Flow H,.O .. No
Meter 'i. 1.__.., ~ ~ o q .. No
ln4A '>t -:r. TWN-2 (,. '1 --:JfJ Flow I I. fl .... No
Meter , 7 1' '1 ~ ~ Lt 7-.... No
O'A~I> TW4-22 "'1 ' ~ t;;' Flow I/,., 0 --No
Meter qi.-c ".l..-,, 7'-1.-, '1111! No
OSI &.I !1 TW4-24 {.,,q' ~,_, Flow ,, •• '1. "lie No
Meter .2. , n "1 _q -,. L.C. ~ lo .. No
lnR2 G. TW4-25 &,q, '1st Flow 10."il ... No
Meter , .. , '.:I , 9. q,. CH) ... No
lhq.,.,~ TW4-1 J ()/. {.,j,·· Flow I-,_ (,,. ~ No
Meter 1.1 , 1l n ..., n n .. No
nq27 TW4-2 Cll'l It. Flow I I •. "l.. ... No
Meter 4', 1. ~ il , r;-,_ No
nq ~ I TW4-11 qn,01 Flow J t.". f'.I ..... No
Meter , ._, ,. ~.:J. .~U? ,._ No
tl~ I SI TW4-21 -,..,_,o Flow I I. n ,_ No
Meter ~l.~n7 ~ ~-37 ,_ No
o~i; 1 TW4-37 r ... ~ 1'1 Flow I ,;t r> ... No
Meter ~ ..2.. Iii D -:a. :1 °' , 9S No
OllD~ TW4-39 -, "l tJR Flow
'"· 0
.. No
Meter J O~-J, t 15':' t .. No
TW4-40 ..,j__~i,{ Flow ,~.D .. No
Meter , t ::i -, I-{ ; n , ~ I Ifill&: No
n"' i:-,. TW4-41 ,;cq,«f) Flow r.. n ... No
Meter ,_,.l.,L\0/ •. iC\ -~ No
Operational Problems (Please list well number):
Corrective Action(s) Taken {Please list well number): ----------------
* Depth is measured to the nearest 0.01 feet.
@
TW4-43
~5523
estimated dry area
temporary perched monitoring
well installed September, 2021
showing elevation in feet amsl
DR-1,
,6
TWN-20
C 5564
temporary perched nitrate monitoring
well installed April, 2021 showing
TW4-42
Q 5524
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 ·t . II h . • 5504 perc e moni onng we s owing
, elevation in feet amsl
I TW4-12 ' 0 5568 temporary perched monitoring well
showing elevation in feet amsl
TWN-7 h d . . . ◊5569 temporary perc e nitrate monitoring
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
'16:
CORI
DR--08 .
5485
DR-10 DR-11 . .
5482 5488
DR-15
~
' :546~
\
\ \
\ \
\
\
\
'
---·
r
~2
-----
~
.......
~
abangoned
lWN-11
\
' '
'
.....
ab~ioned
lWN'CO
abangoned
I 1WN:09 ~' TWF/os r,088
PIEZ-01 I •:t:d '~,9
"1111-19""
,,,
4" -··-......
..... ..-.. .,. --·-..... ~.,,.,._., ...
u-~
PIEZ--05
-
-
-
~J < I .,
1: ~
(I
'
1 m "1 le L ~.;1.-..:J,r~;a:r., ,;;-...~/~ JJ:.,..,. .. ~·F,,,
I' ,·
a1>a11foned ~ •
lWN-12 ~J'
1WN-1 ,_,
5525
5520
5510
5soo
5490
5480
5410
5440
5430
S100
~;_$'1..9,,,
.. , ·~.i1}•:', . ,.~, . . . .
I ... ,, -. _... ~-•'•J...·-~ -............... l'~" •
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_ll_ wells; TW4-11 water level Is below the base of the Burro Canyon Formation
HYDRO
GEO
CHEM,INC.
KRIGED 4th QUARTER, 2022 WATER LEVELS
WHITE MESA SITE
APPROVED DATE REFERENCE
H:/718000/feb23/WL/Uwl1222.srf
FIGURE
C-1
estimated nitrate capture zone boundary
, -stream tube resulting from pumping.
, (note: combined capture shown for
/ TW4-22 and TW4-24)
estimated chloroform capture zone boundary
DR-10 .
5432 •
\
DR-11 .
5488
\
\
\ \
\ \
\
\
\
'
-. ,, .. ,
COR
\
' ' '
abangoned
TWN-15
•*aonad
aban,oned
TWN-11 TWt;-12 . ~ 1>«'1"""d ~
'TWN•1
' TWN'tO
ab•~3on1d I 1WN-os -
JWFhs
I a;1:d
J2 /
8
/
JS.88
PIEZ-01 -/5589 -• ;'
"1W-19""
'
--
N't
/ --~:..------~t32
13 7
□
::n.n
-11 '
---
.5~0
::---_ 553 fta,.a -
' --5s2s
ss20
• stream tubes resulting from pumping (note: :C: •~ l !
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 dry area
TW4-43 temporary perched monitoring
~ 5523 well installed September, 2021
showing elevation in feet amsl
TWN-20 temporary perched nitrate monitoring
IJ5564 well installed April, 2021 showing
elevation in feet amsl
TW4-42 temporary perched monitoring well
¢ 5524 installed April, 2019 showing
elevation in feet amsl
MW-38 perched monitoring well
-¢,5463 installed February, 2018 showing
elevation in feet amsl
MW-5
.5504
I TW4-12 · Qs5sa
perched monitoring well showing
elevation in feet amsl
temporary perched monitoring well
showing elevation in feet amsl
TWN-7 h d . . . A.5569 temporary perc e 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
1 mile . ·. ,. · ·•,,_ ·" , ----~-...... · -, ~ ~-·-r:~ _, ,.. • :<I •' .. -~ ;~ . •J ,!. ~~'--~-~;:L ... 4_., -~-,
NOTES: MW-4, MW-26, TW4-1, TW4-2, TW4-4, TW4-11, TW4-1 9, 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; TW4-11 water level Is below the base of the Burro Canyon Formation
HYDRO
GEO
CHEM,INC. APPROVED
KRIGED 4th QUARTER, 2022 WATER LEVELS
AND ESTIMATED CAPTURE ZONES
WHITE MESA SITE
DATE REFERENCE I FIGURE
H:/718000/feb23/WUUwl1222NTcz2.srf C-2
'I , .... 4-24---
5556
...
' ..... ..... .....
,;:, "' estimated nitrate capture zone boundary
c:? stream tube resulting from pumping.
, (note: combined capture shown for
TW4-22 and TW4-24)
• TW4-43
~5523
TW4-42
Q5524
MW-25
.5531
TW4,7
0 5539
PIEZ-2
i;;i 5583
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)
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 amsl
temporary perched monitoring well
showing elevation in feet amsl
perohed piezometer showing
elevation In feet amsl
.I
I -1 ... _ ,,,.-.. '
. I' ' \ TWN.4l3 ,
, (l;591 .,,~ #' X
r-'---
·1::t:WN-01
-. 0 5578
660°
L -5f/S1 ,5
At-32 5555
.,..
<o
~'\. ~JJ:JIJ
6sA6
5540
. . .·5535
/)5529 TW4,33TW _. --,,.. '-----5532.5
-.O_ 0 0 1W4-ss 5528 , .5528 5523. -_ ~ 3Q 26
,527 ---
.__ ., "t.. ....
TW4-2'!1 OTWll-30... _ -.Q.52?
0 ~-5521 ' I , S-$5~ .s --ss21 .4 . . <u·<S rw4-505524 J:(5523 ss<s
ss20
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; TW4-11 water level is below the base of the Burro Canyon Formation
HYDRO
GEO
KRIGED 4th QUARTER, 2022 WATER LEVELS
AND ESTIMATED CAPTURE ZONES
WHITE MESA SITE
detail maJ)} CHEM, INC. APPROVED DATE REFERENCE
H:/718000/feb23/WL/Uw1222NTcz.srf
FIGURE
C-3
TabD
Kriged Previous Quarter Groundwater Contour Map
!
@
TW4-43
~5523
estimated dry area
temporary perched monitoring
well installed September, 2021
showing elevation in feet amsl
TWN-20 temporary perched nitrate monitoring
C 5564 well installed April, 2021showing
elevation in feet amsl
TW4-42
¢ 5524
MW-38
-<?-5463
MW-5
.5504
temporary perched monitoring well
installed April, 2019 showing
elevation in feet amsl
perched monitoring well
installed February, 2018 showing
elevation in feet amsl
perched monitoring well showing
elevation in feet amsl
TW4-1 2 0 5568 temporary perched monitoring well
showing elevation in feet amsl
TWN-7 t h d ·t t . . A.5569 emporary perc e m ra e monitoring
V well showing elevation in feet amsl
PIEZ-1 perched piezometer showing
~ 5588 elevation in feet amsl
RUIN SPRING b 5380 seep or spring showing
elevation in feet amsl
\
\ \
\ \
\ ' \ ' ....
' ....
' .... -.... ~
I
~ ,,
OR,10 ~h . s.tA&
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;
1W4-22, TW4-24, TW4-25 and TWN-2 are nitrate pumplng wells; TW4-1 1 water level Is below the base of the Burro Canyon Formation
HYDRO
GEO
CHEM, INC.
KRIGED 3rd QUARTER, 2022 WATER LEVELS
WHITE MESA SITE
APPROVED DATE REFERENCE
H:ll18000/nov22/WUUwl0922.srf
FIGURE D-1
TabE
Hydrographs of Groundwater Elevations over Time for Nitrate Monitoring Wells
-C.
E
.c
.,; --Cl)
E
i=
:i..
Cl) > 0
Cl) > Cl)
..J
:i..
Cl) -~
T"" I z
~
8G/9~/80
0l/8~/90
L~/GG/60
v~/LG/G~
G~/W/v0
60/90/L0
90/0~/0~
-
0 ci 0 ci .....
0 ci C\J
0 ci (")
0
ci '<t"
r
{
••
0 ci LO
j
' 0 ci co
t
•
~
•
i •
i
~
t
.
. ~ .~
t
' 0 ci r--
0 ci 0()
-Q.
E
.c . ---Cl)
E
i= ...
Cl) > 0
Cl) > Cl)
..J ...
Cl) -ca 3:
C'\I I z ~
8G/9~/80 ·
0G/8~/90
L~/GG/60
t>~/LG/G~ •
G~/W/t>0 ·
60/90/L0
90/0 ~ID~ +----,1-----!------!,-----4----......... ---1-----1-----!------!
0 ci 0 ci 0 ci C\J
0 ci C')
0 ci '<t"
0 ci It)
0
ci CD
0
ci r--
0
ci co
0 ci 0)
-C. E -.c
..: --Cl)
E i=
I.,
Cl) > 0
Cl) > Cl)
.J
I., Cl) -~
CW)
I z ~
9G/60R, ~ -.---.----~----,--------,.-------.-----.---.--------.-----,------,
8G/9~/80
0G/8 ~/90
L~R,°G/60
v~/LGR,~ -
G ~/~0/t;,0 -
60/90/L0
90/0 ~/0 ~ +--------!f-----+----+-----1----+-----+---l-----+-----+-------I
0
ci
q
IO
0 ci q
IO ,....
0 ci C\I
0 ci C')
q
IO C')
(·:u) 1u1od 6u1Jnseaw Mo1ae 1.ndaa
q
0 '<t"
0 iri '<t"
0
ci LO
-a. E -.0
..: --G)
E i= ...
G) > 0
G) > G)
..J ...
G) -~
,i:::r-I z ~
S°G/60R, ~ ...-------.-------.-----.----------.,--------.------.-------.
8°G/S~/80
0G/8~/90 -
L~R,°G/60
v~JLGR,~
G~/~0/v0
60/90/LO -
90/0 ~JO~ +--------l----+-----+-------'!---------+----+------,
0
ci
0
ci ....
0
ci C\I
0
ci C')
0 ci s:t
0 ci LO
0 ci CD
C! 0 I'-
-a.
E
.c = -Cl)
E
i= ... Cl) > 0
Cl) > Cl)
..J ...
Cl) -ca 3:
CD I z ~
9G/60R,~
0G/8 ~/90
L~R,e,/60
v~/LGR,~
U/W/v0
60/90/L0
90/0~/0~
.
.
0 ci
0
ci ,-
0
ci C\J
0 ci C')
0
ci
"""
.
0 ci IO
-
~
C! 0 <D
0 ci r--
•
•
•
◄ •
~
◄ ◄
~ .. • .
~ .
~
'
'
I •
l I
~
~
◄ ~ '. •
'
'
~
• .~
•
•
0 ci 00
0
ci O'l
......
I\)
0 0
...... Depth Below Measuring Point (ft.)
o oo m ~ "' 0 0 0 0 0 o o o o o
._,
► ◄
►
►
► ◄
►
►
◄►
◄ '. ◄
◄► ► ►
◄•
►
◄
•
►
► •
►
'► ► ◄
► ► • ►
◄
1'
◄
◄'
0 0
10/10/06
07/06/09
04/01/12
12/27/14
09/22/17
06/18/20
03/15/23
12/09/25
~ z I .....
~ ... (I)
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TabF
Depths to Groundwater and Elevations over Time for Nitrate Monitoring Wells
Water Levels and Data over Time
White Mesa Mill -Well TWN-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 (blwMP) (blw.LSD) Well
5,646.96 5,648.09 1.13 106.13
5,600.38 02/06/09 47.71 46.58
5,599.99 07/21/09 48.10 46.97
5,600.26 09/21/09 47.83 46.70
5,601.10 10/28/09 46.99 45.86
5,602.59 12/14/09 45.50 44.37
5,600.55 03/11/10 47.54 46.41
5,600.66 05/11/10 47.43 46.30
5,599.18 09/29/10 48.91 47.78
5,598.92 12/21/10 49.17 48.04
5,598.29 02/28/11 49.80 48.67
5,597.80 06/21/11 50.29 49.16
5,597.32 09/20/11 50.77 49.64
5,597.15 12/21/11 50.94 49.81
5,596.54 03/27/12 51.55 50.42
5,596.52 06/28/12 51.57 50.44
5,595.03 09/27/12 53.06 51.93
5,596.62 12/28/12 51.47 50.34
5,593.54 03/28/13 54.55 53.42
5,592.38 06/27/13 55.71 54.58
5,591.65 09/27/13 56.44 55.31
5,590.34 12/20/13 57.75 56.62
5,590.03 03/27/14 58.06 56.93
5,589.09 06/25/14 59.00 57.87
5,588.15 09/25/14 59.94 58.81
5,587.74 12/17/14 60.35 59.22
5,587.09 03/26/15 61.00 59.87
5,586.79 06/22/15 61.30 60.17
5,586.39 09/30/15 61.70 60.57
5,586.05 12/02/15 62.04 60.91
5,585.89 03/30/16 62.20 61.07
5,585.30 06/30/16 62.79 61.66
5,584.95 09/29/16 63.14 62.01
5,584.55 12/21/16 63.54 62.41
5,584.74 03/30/17 63.35 62.22
5,584.29 06/27/17 63.80 62.67
5,583.77 09/26/17 64.32 63.19
5,583.44 11/29/17 64.65 63.52
5,583.03 03/29/18 65.06 63.93
5,582.79 06/22/18 65.30 64.17
5,582.22 09/26/18 65.87 64.74
5,582.14 12/17/18 65.95 64.82
5,581.49 03/26/19 66.60 65.47
5,581.18 06/24/19 66.91 65.78
5,581.12 08/13/19 66.97 65.84
5,580.93 11/19/19 67 .16 66.03
5,580.54 02/13/20 67.55 66.42
5,580.24 05/05/20 67.85 66.72
5,579.73 09/22/20 68.36 67.23
Water Levels and Data over Time
White Mesa Mill -Well TWN-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) Monitorin~ (blw.MP) (blw.LSD) Well
5,646.96 5,648.09 1.13 106.13
5,579.54 12/30/20 68.55 67.42
5,579.51 03/11/21 68.58 67.45
5,578.97 06/24/21 69.12 67.99
5,578.84 08/11/21 69.25 68.12
5,579.03 12/28/21 69.06 67.93
5,578.38 02/10/22 69.71 68.58
5,577.91 06/28/22 70.18 69.05
5,577.88 08/15/22 70.21 69.08
5,577.93 11/17/22 70.16 69.03
Water Levels and Data over Time
White Mesa Mill -Well TWN-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
(WL) (LSD) (MP) Riser (L) Monitoring (bJw.MP) (blw.LSD) Well
5,625.75 5,626.69 0.94 95.9
5,611.37 2/6/09 15.32 14.38
5,610.63 7/21/09 16.06 15.12
5,609.73 9/21/09 16.96 16.02
5,607.08 11/2/09 19.61 18.67
5,606.57 12/14/09 20.12 19.18
5,612.45 3/11/10 14.24 13.30
5,612.78 5/11/10 13.91 12.97
5,611.37 9/29/10 15.32 14.38
5,610.24 12/21/10 16.45 15.51
5,610.64 2/28/11 16.05 15.11
5,609.78 6/21/11 16.91 15.97
5609.79 9/20/11 16.90 15.96
5609.72 12/21/11 16.97 16.03
5,605.69 3/27/12 21.00 20.06
5,605.67 6/28/12 21.02 20.08
5,603.03 9/27/12 23.66 22.72
5,605.76 12/28/12 20.93 19.99
5,598.28 3/28/13 28.41 27.47
5,594.32 6/27/13 32.37 31.43
5,594.38 9/27/13 32.31 31.37
5,594.68 12/20/13 32.01 31.07
5,597.79 3/27/14 28.90 27.96
5,595.80 6/25/14 30.89 29.95
5,587.67 9/25/14 39.02 38.08
5,592.66 12/17/14 34.03 33.09
5,596.71 3/26/15 29.98 29.04
5,598.64 6/22/15 28.05 27.11
5,597.89 9/30/15 28.80 27.86
5,597.89 12/2/15 28.80 27.86
5,594.25 3/30/16 32.44 31.50
5,590.26 6/30/16 36.43 35.49
5,591.67 9/29/16 35.02 34.08
5592.92 12/21/16 33.77 32.83
5589.05 3/30/17 37.64 36.7
5589.69 6/27/17 37.00 36.06
5590.71 9/26/17 35.98 35.04
5591.65 11/30/17 35.04 34.10
5574.69 3/28/18 52.00 51.06
5586.49 6/22/18 40.20 39.26
5550.31 9/24/18 76.38 75.44
5568.32 12/17/18 58.37 57.43
5553.52 3/25/19 73.17 72.23
5569.06 6/24/19 57.63 56.69
5565.38 8/12/19 61.31 60.37
5567.87 11/18/19 58.82 57.88
5577.69 2/13/20 49.00 48.06
Water Levels and Data over Time
White Mesa Mill -Well TWN-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
(WL) (LSD) (MP) Riser (L) Monitoring (blw. IP) (blw.LSD) Well
5,625.75 5,626.69 0.94 95 .9
5566.89 5/5/20 59.80 58.86
5570.34 9/21/20 56.35 55.41
5562.46 12/28/20 64.23 63.29
5568.57 3/11/21 58.12 57.18
5558.22 6/24/21 68.47 67.53
5568.34 8/11/21 58.35 57.41
5568.92 12/28/21 57.77 56.83
5568.09 2/10/22 58.60 57.66
5568.00 6/28/22 58.69 57.75
5558.48 8/15/22 68.21 67.27
5567.88 11/17/22 58.81 57.87
Water Levels and Data over Time
White Mesa Mill-Well TWN-3
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
5,633.64 5,634.50 0.86 96
5,603.77 2/6/09 30.73 29.87
5,602.37 7/21/09 32.13 31.27
5,602.34 9/21/09 32.16 31.30
5,602.60 10/28/09 31.90 31.04
5,603.12 12/14/09 31.38 30.52
5,602.90 3/11/10 31.60 30.74
5,603.23 5/11/10 31.27 30.41
5,602.86 9/29/10 31.64 30.78
5,603.35 12/21/10 31.15 30.29
5,602.89 2/28/11 31.61 30.75
5,602.75 6/21/11 31.75 30.89
5,602.40 9/20/11 32.10 31.24
5,602.40 12/21/11 32.10 31.24
5,601.70 3/27/12 32.80 31.94
5,601.67 6/28/12 32.83 31.97
5,600.50 9/27/12 34.00 33.14
5,601.74 12/28/12 32.76 31.90
5,598.60 3/28/13 35.90 35.04
5,597.18 6/27/13 37.32 36.46
5,597.36 9/27/13 37.14 36.28
5,597.60 12/20/13 36.90 36.04
5,598.00 3/27/14 36.50 35.64
5,596.34 6/25/14 38.16 37.30
5,596.30 9/25/14 38.20 37.34
5,596.55 12/17/14 37.95 37.09
5,596.20 3/26/15 38.30 37.44
5,596.00 6/22/15 38.50 37.64
5,596.61 9/30/15 37.89 37.03
5,596.09 12/2/15 38.41 37.55
5,595.29 3/30/16 39.21 38.35
5,594.61 6/30/16 39.89 39.03
5,593.79 9/29/16 40.71 39.85
5,594.20 12/21/16 40.30 39.44
5,594.20 3/30/17 40.30 39.44
5,592.85 6/27/17 41.65 40.79
5,592.60 9/26/17 41.90 41.04
5,593.33 11/29/17 41.17 40.31
5,592.55 3/29/18 41.95 41.09
5,592.45 6/22/18 42.05 41.19
5,592.90 9/26/18 41.60 40.74
5,594.29 12/18/18 40.21 39.35
5,591.99 3/26/19 42.51 41.65
5,592.69 6/24/19 41.81 40.95
5,592.50 8/13/19 42.00 41.14
5,592.78 11/19/19 41.72 40.86
5,592.33 2/13/20 42.17 41.31
Water Levels and Data over Time
White Mesa Mill -Well TWN-3
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
5,591.78 5/5/20 42.72 41.86
5,591.67 9/22/20 42.83 41.97
5,592.09 12/30/20 42.41 41.55
5,591.62 3/11/21 42.88 42.02
5,591.89 6/24/21 42.61 41.75
5,591.66 8/11/21 42.84 41.98
5,592.09 12/28/21 42.41 41.55
5,591.01 2/10/22 43.49 42.63
5,590.28 6/28/22 44.22 43.36
5,590.28 8/15/22 44.22 43.36
5,590.70 11/17/22 43 .80 42.94
Water Levels and Data over Time
White Mesa Mill -Well TWN-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
(WL) (LSD) (MP) Riser (L) Monitoring (blw.MP) (blw.LSD) Well
5,641.04 5,641.87 0.83 126.4
5,601.47 2/6/09 40.40 39.57
5,604.26 7/21/09 37.61 36.78
5,605.02 9/21/09 36.85 36.02
5,605.87 10/28/09 36.00 35.17
5,605.81 12/14/09 36.06 35.23
5,605.31 3/11/10 36.56 35.73
5,605.36 5/11/10 36.51 35.68
5,604.59 9/29/10 37.28 36.45
5,604.42 12/21/10 37.45 36.62
5,603.69 2/28/11 38.18 37.35
5,603.36 6/21/11 38.51 37.68
5,602.82 9/20/11 39.05 38.22
5,602.79 12/21/11 39.08 38.25
5,600.82 3/27/12 41.05 40.22
5,600.84 6/28/12 41.03 40.20
5,598.47 9/27/12 43.40 42.57
5,600.86 12/28/12 41.01 40.18
5,595.57 3/28/13 46.30 45.47
5,594.12 6/27/13 47.75 46.92
5,593.33 9/27/13 48.54 47.71
5,591.92 12/20/13 49.95 49.12
5,591.85 3/27/14 50.02 49.19
5,590.49 6/25/14 51.38 50.55
5,589.64 9/25/14 52.23 51.40
5,589.42 12/17/14 52.45 51.62
5,589.17 3/26/15 52.70 51.87
5,588.17 6/22/15 53.70 52.87
5,587.48 9/30/15 54.39 53.56
5,587.02 12/2/15 54.85 54.02
5,586.90 3/20/16 54.97 54.14
5,586.18 6/30/16 55.69 54.86
5,585.72 9/29/16 56.15 55.32
5585.42 12/21/16 56.45 55.62
5586.35 3/30/17 55.52 54.69
5585.09 6/27/17 56.78 55.95
5584.41 9/26/17 57.46 56.63
5584.07 11/29/17 57.80 56.97
5583.76 3/29/18 58.11 57.28
5583.47 6/22/18 58.40 57.57
5582.92 9/26/18 58.95 58.12 . 5582.66 12/18/18 59.21 58.38
5582.23 3/26/19 59.64 58.81
5581.97 6/24/19 59.90 59.07
5581.96 8/13/19 59.91 59.08
5581.68 11/19/19 60.19 59.36
5581.34 2/13/20 60.53 59.70
Water Levels and Data over Time
White Mesa Mill -Well TWN-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
(WL) (LSD) (MP) Riser (L) Monitoring (blw.MP) (blw.LSD) Well
5,641.04 5,641.87 0.83 126.4
5580.99 5/5120 60.88 60.05
5580.45 9/22/20 61.42 60.59
5580.34 12/30/20 61.53 60.70
5580.29 3/11/21 61.58 60.75
5579.80 6/24/21 62.07 61.24
5579.55 8/11/21 62.32 61.49
5579.87 12/28/21 62.00 61.17
5579.25 2/10/22 62.62 61.79
5578.69 6/28/22 63.18 62.35
5578.74 8/15/22 63.13 62.3
5579.02 11/17/22 62.85 62.02
Water Levels and Data over Time
White Mesa Mill -Well TWN-6
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 (bhv.MP) (blw.LSD) Well
5,663.03 5,664.94 1.91 131.91
5,589.52 8/25/09 75.42 73.51
5,589.46 9/22/09 75.48 73.57
5,589.61 11/3/09 75.33 73.42
5,589.92 12/14/09 75.02 73.11
5,590.24 3/11/10 74.70 72.79
5,590.40 5/11/10 74.54 72.63
5,590.24 9/29/10 74.70 72.79
5,590.49 12/21/10 74.45 72.54
5,590.16 2/28/11 74.78 72.87
5,590.44 6/21/11 74.50 72.59
5,590.35 9/20/11 74.59 72.68
5,590.67 12/21/11 74.27 72.36
5,590.34 3/27/12 74.60 72.69
5,590.32 6/28/12 74.62 72.71
5,589.77 9/27/12 75.17 73.26
5,589.67 12/28/12 75.27 73.36
5,589.45 3/28/13 75.49 73.58
5,589.01 6/27/13 75.93 74.02
5,588.99 9/27/13 75.95 74.04
5,588.15 12/20/13 76.79 74.88
5,588.50 3/27/14 76.44 74.53
5,588.03 6/25/14 76.91 75.00
5,587.74 9/25/14 77.20 75.29
5,587.69 12/17/14 77.25 75.34
5,587.29 3/26/15 77.65 75.74
5,587.04 6/22/15 77.90 75.99
5,586.93 9/30/15 78.01 76.10
5,586.72 12/2/15 78.22 76.31
5,586.92 3/30/16 78.02 76.11
5,586.32 6/30/16 78.62 76.71
5,586.16 9/29/16 78.78 76.87
5,586.03 12/21/16 78.91 77.00
5,586.40 3/30/17 78.54 76.63
5,605.99 6/27/17 58.95 57.04
5585.76 9/26/17 79.18 77.27
5585.59 11/29/17 79.35 77.44
5585.63 3/29/18 79.31 77.4
5585.59 6/22/18 79.35 77.44
5585.26 9/26/18 79.68 77.77
5585.27 12/18/18 79.67 77.76
5585.16 3/26/19 79.78 77.87
5585.05 6/24/19 79.89 77.98
5584.86 8/13/19 80.08 78.17
5585.14 11/19/19 79.80 77.89
5584.92 2/13/20 80.02 78.11
5585.27 5/5/20 79.67 77.76
Water Levels and Data over Time
White Mesa Mill -Well TWN-6
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
5 663.03 5,664.94 1.91 131.91
5584.46 9/22/20 80.48 78.57
5584.58 12/30/20 80.36 78.45
5584.73 3/11/21 80.21 78.30
5584.38 6/24/21 80.56 78.65
5584.25 8/11/21 80.69 78.78
5584.46 12/28/21 80.48 78.57
5584.2 2/10/22 80.74 78.83
5583.89 6/28/22 81.05 79.14
5583.89 8/15/22 81.05 79.14
5584.26 11/17/22 80.68 78.77
Water Levels and Data over Time
White Mesa Mill -Well TWN-7
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
5,647.39 5,649.26 1.87 107.2
5,552.56 08/25/09 96.70 94.83
5,558.34 09/21/09 90.92 89.05
5,558.82 11/10/09 90.44 88.57
5,558.96 12/14/09 90.30 88.43
5,559.54 03/11/10 89.72 87.85
5,559.60 05/11/10 89.66 87.79
5,559.83 09/29/10 89.43 87 .56
5,559.00 12/21/10 90.26 88.39
5,559.68 02/28/11 89.58 87.71
5,560.43 06/21/11 88.83 86.96
5,560.46 09/20/11 88.80 86.93
5,560.78 12/21/11 88.48 86.61
5,560.92 03/27/12 88.34 86.47
5,560.87 06/28/12 88.39 86.52
5,561.40 09/27/12 87.86 85.99
5,561.50 12/28/12 87.76 85.89
5,562.01 03/28/13 87.25 85.38
5,562.21 06/27/13 87.05 85.18
5,562.41 09/27/13 86.85 84.98
5,562.23 12/20/13 87.03 85.16
5,562.85 03/27/14 86.41 84.54
5,562.95 06/25/14 86.31 84.44
5,563.06 09/25/14 86.20 84.33
5,563.21 12/17/14 86.05 84.18
5,563.33 03/26/15 85.93 84.06
5,563.46 06/22/15 85.80 83.93
5,563.64 09/30/15 85.62 83.75
5,563.88 12/02/15 85.38 83.51
5,564.19 03/30/16 85.07 83.20
5,563.97 06/30/16 85.29 83.42
5,564.21 09/29/16 85.05 83.18
5,564.46 12/21/16 84.80 82.93
5,564.96 03/30/17 84.30 82.43
5,564.81 06/27/17 84.45 82.58
5,565.46 09/26/17 83.80 81.93
5,565.45 11/29/17 83.81 81.94
5,566.11 03/29/18 83.15 81.28
5,566.21 06/22/18 83.05 81.18
5,566.42 09/26/18 82.84 80.97
5,566.09 12/18/18 83.17 81.30
5,566.67 03/26/19 82.59 80.72
5,566.93 06/24/19 82.33 80.46
5,567.28 08/13/19 81.98 80.11
5,567.26 11/19/19 82.00 80.13
5,567.12 02/13/20 82.14 80.27
5,567.14 05/05/20 82.12 80.25
Water Levels and Data over Time
White Mesa Mill -Well TWN-7
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
5,647.39 5,649.26 1.87 107.2
5,567.98 09/22/20 81.28 79.41
5,568.38 12/30/20 80.88 79.01
5,568.18 03/11/21 81.08 79.21
5,568.50 06/24/21 80.76 78.89
5,568.71 08/11/21 80.55 78.68
5,568.56 12/28/21 80.70 78.83
5,568.90 02/10/22 80.36 78.49
5,568.85 06/28/22 80.41 78.54
5,569.10 08/15/22 80.16 78.29
5,568.70 11/17/22 80.56 78.69
Water Levels and Data over Time
White Mesa Mill -Well TWN-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
5,647.80 5,649.53 1.73 124.73
5,586.18 11/4/09 63.35 61.62
5,586.51 12/14/09 63.02 61.29
5,586.71 3/11/10 62.82 61.09
5,586.72 5/11/10 62.81 61.08
5,586.53 9/29/10 63.00 61.27
5,586.80 12/21/10 62.73 61.00
5,586.74 2/28/11 62.79 61.06
5,586.84 6/21/11 62.69 60.96
5,586.73 9/20/11 62.80 61.07
5,586.98 12/21/11 62.55 60.82
5,587.07 3/27/12 62.46 60.73
5,587.10 6/28/12 62.43 60.70
5,587.07 9/27/12 62.46 60.73
5,587.33 12/28/12 62.20 60.47
5,587.43 3/28/13 62.10 60.37
5,587.43 6/27/13 62.10 60.37
5,587.72 9/27/13 61.81 60.08
5,587.22 12/20/13 62.31 60.58
5,587.91 3/27/14 61.62 59.89
5,587.74 6/25/14 61.79 60.06
5,587.76 9/25/14 61.77 60.04
5,587.88 12/17/14 61.65 59.92
5,587.97 3/26/15 61.56 59.83
5,587.98 6/22/15 61 .55 59.82
5,588.18 9/30/15 61.35 59.62
5,588.23 12/2/15 61.30 59.57
5,588.70 3/30/16 60.83 59.10
5,588.31 6/30/16 61.22 59.49
5,588.36 9/29/16 61.17 59.44
5,588.43 12/21/16 61.10 59.37
5,588.96 3/30/17 60.57 58.84
5,589.07 6/27/17 60.46 58.73
5588.86 9/26/17 60.67 58.94
5588.82 11/29/17 60.71 58.98
5589.12 3/29/18 60.41 58.68
5589.19 6/22/18 60.34 58.61
5589.12 9/26/18 60.41 58.68
5589.20 12/18/18 60.33 58.60
5589.32 3/26/19 60.21 58.48
5589.40 6/25/19 60.13 58.40
5589.32 8/13/19 60.21 58.48
5589.59 11/19/19 59.94 58.21
5589.73 2/13/20 59.80 58.07
5590.17 5/5/20 59.36 57.63
5589.67 9/22/20 59.86 58.13
5590.05 12/30/20 59.48 57.75
Water Levels and Data over Time
White Mesa Mill -Well TWN-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
5,647.80 5,649.53 1.73 124.73
5590.14 3/11/21 59.39 57.66
5590.04 6/24/21 59.49 57.76
5590.05 8/11/21 59.48 57.75
5590.15 12/28/21 59.38 57.65
5590.28 2/10/22 59.25 57.52
5590.18 6/28/22 59.35 57.62
5590.27 8/15/22 59.26 57.53
5590.11 11/17/22 59.42 57.69
Water Levels and Data over Time
White Mesa Mill-Well TWN-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
5,651.07 5,652.70 1.63 94.63
5,603.34 11/4/09 49.36 47.73
5,603.56 12/14/09 49.14 47.51
5,603.84 3/11/10 48.86 47.23
5,604.31 5/11/10 48.39 46.76
5,604.28 9/29/10 48.42 46.79
5,604.39 12/21/10 48.31 46.68
5,604.20 2/28/11 48.50 46.87
5,604.55 6/21/11 48.15 46.52
5,604.74 9/20/11 47.96 46.33
5,604.94 12/21/11 47.76 46.13
5,604.84 3/27/12 47.86 46.23
5,604.85 6/28/12 47.85 46.22
5,604.99 9/27/12 47.71 46.08
5,605.10 12/28/12 47.60 45.97
5,605.22 3/28/13 47.48 45.85
5,605.11 6/27/13 47 .59 45 .96
5,605.39 9/27/13 47.31 45.68
5,604.99 12/20/13 47.71 46.08
5,605.71 3/27/14 46.99 45.36
5,605.16 6/25/14 47.54 45.91
5,605.10 9/25/14 47.60 45.97
5,605.25 12/17/14 47.45 45.82
5,605.04 3/26/15 47.66 46.03
5,604.99 6/22/15 47.71 46.08
5,605.05 9/30/15 47.65 46.02
5,604.96 12/2/15 47.74 46.11
5,605.25 3/30/16 47.45 45.82
5,605.00 6/30/16 47.70 46.07
5,605.00 9/29/16 47.70 46.07
5,605.00 12/21/16 47.70 46.07
5,605.43 3/30/17 47.27 45.64
5,605.20 6/27/17 47.50 45.87
5605.00 9/26/17 47.70 46.07
5605.02 11/29/17 47.68 46.05
5605.11 3/29/18 47.59 45.96
5605.19 6/22/18 47.51 45.88
5604.99 9/26/18 47.71 46.08
5605.18 12/19/18 47 .52 45.89
5605.06 3/26/19 47.64 46.01
5604.96 6/24/19 47.74 46.11
5604.87 8/13/19 47.83 46.20
5605.19 11/19/19 47.51 45.88
5605.02 2/13/20 47.68 46.05
5605.30 5/5/20 47.40 45.77
5604.85 9/22/20 47.85 46.22
5604.99 12/30/20 47.71 46.08
Water Levels and Data over Time
White Mesa Mill -Well TWN-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
5,651.07 5,652.70 1.63 94.63
5604.99 3/11/21 47.71 46.08
5604.90 6/24/21 47.80 46.17
5604.85 8/11/21 47.85 46.22
5604.93 12/28/21 47.77 46.14
5604.94 2/10/22 47.76 46.13
5604.7 6/28/22 48.00 46.37
5604.73 8/15/22 47.97 46.34
5604.86 11/17/22 47.84 46.21
Water Levels and Data over Time
White Mesa Mill -Well TWN -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
5,643.95 5,645.45 1.50 147
5,586.85 1112/09 58.60 57.10
5,600.14 12/14/09 45.31 43.81
5,587.36 3/11/10 58.09 56.59
5,587.71 5/11/10 57.74 56.24
5,587.50 9/29/10 57.95 56.45
5,607.66 12/21/10 37.79 36.29
5,587.35 2/28/11 58.10 56.60
5,587.71 6/21/11 57.74 56.24
5,587.65 9/20/11 57.80 56.30
5,587.95 12/21/11 57.50 56.00
5,587.05 3/27/12 58.40 56.90
5,587.05 6/28/12 58.40 56.90
5,587.50 9/27/12 57.95 56.45
5,587.50 12/28/12 57.95 56.45
5,587.32 3/28/13 58.13 56.63
5,586.95 6/27/13 58.50 57.00
5,587.02 9/27/13 58.43 56.93
5,586.26 12/20/13 59.19 57.69
5,586.87 3/27/14 58.58 57.08
5,586.23 6/25/14 59.22 57.72
5,586.02 9/25/14 59.43 57.93
5,585.99 12/17/14 59.46 57.96
5,585.66 3/26/15 59.79 58.29
5,585.45 6/22/15 60.00 58.50
5,585.37 9/30/15 60.08 58.58
5,585.24 12/2/15 60.21 58.71
5,585.38 3/30/16 60.07 58.57
5,584.85 6/30/16 60.60 59.10
5,584.69 9/29/16 60.76 59.26
5,584.60 12/21/16 60.85 59.35
5,584.99 3/30/17 60.46 58.96
5,584.65 6/27/17 60.80 59.30
5584.36 9/26/17 61.09 59.59
5584.24 11/29/17 61.21 59.71
5584.25 3/29/18 61.20 59.70
5584.23 6/22/18 61.22 59.72
5583.92 9/26/18 61.53 60.03
5583.85 12/18/18 61.60 60.10
5583.72 3/26/19 61.73 60.23
5583.69 6/24/19 61.76 60.26
5583.76 8/13/19 61.69 60.19
5583.72 11/19/19 61.73 60.23
5583.54 2/13/20 61.91 60.41
5583.34 5/5/20 62.11 60.61
5583.15 9/22/20 62.30 60.8
5583.26 12/30/20 62.19 60.69
Water Levels and Data over Time
White Mesa Mill -Well TWN -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) (bhv.LSD) Well
5,643.95 5,645.45 1.50 147
5583.36 3/11/21 62.09 60.59
5583.06 6/24/21 62.39 60.89
5583.01 8/11/21 62.44 60.94
5583.10 12/28/21 62.35 60.85
5582.80 2/10/22 62.65 61.15
5582.34 6/28/22 63.11 61.61
5582.42 8/15/22 63.03 61.53
5582.49 11/17/22 62.96 61.46
Water Levels and Data over Time
White Mesa Mill-Well TWN-19
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
5,659.59 5,661.36 1.77 107.77
5,606.17 11/2/09 55.19 53.42
5,606.70 12/14/09 54.66 52.89
5,607.22 3/11/10 54.14 52.37
5,607.89 5/11/10 53.47 51.70
5,607.98 9/29/10 53.38 51.61
5,608.41 12/21/10 52.95 51.18
5,608.49 2/28/11 52.87 51.10
5,608.60 6/21/11 52.76 50.99
5,609.17 9/20/11 52.19 50.42
5,608.90 12/21/11 52.46 50.69
5,608.87 3/27/12 52.49 50.72
5,608.86 6/28/12 52.50 50.73
5,608.86 9/27/12 52.50 50.73
5,608.86 12/28/12 52.50 50.73
5,609.17 3/28/13 52.19 50.42
5,608.88 6/27/13 52.48 50.71
5,608.92 9/27/13 52.44 50.67
5,608.46 12/20/13 52.90 51.13
5,608.88 3/27/14 52.48 50.71
5,608.33 6/25/14 53.03 51.26
5,608.11 9/25/14 53.25 51.48
5,608.36 12/17/14 53.00 51.23
5,607.96 3/26/15 53.40 51.63
5,607.98 6722/15 53.38 51.61
5,608.06 9/30/15 53.30 51.53
5,607.88 12/2/15 53.48 51.71
5,608.41 3/30/16 52.95 51.18
5,611.39 6/30/16 49.97 48.20
5,607.90 9/29/16 53.46 51.69
5,608.07 12/21/16 53.29 51.52
5,608.44 3/30/17 52.92 51.15
5,608.07 6/27/17 53.29 51.52
5608.06 9/26/17 53.30 51.53
5607.91 11/29/17 53.45 51.68
5608.00 3/28/18 53.36 51.59
5607.71 6/21/18 53.65 51.88
5607.50 9/26/18 53.86 52.09
5607.94 12/19/18 53.42 51.65
5607.42 3/26/19 53.94 52.17
5607.46 6/25/19 53.90 52.13
5607.39 8/13/19 53.97 52.20
5607.84 11/19/19 53.52 51.75
5607.69 2/13/20 53.67 51.90
5607.57 5/5/20 53.79 52.02
5607.46 9/22/20 53.90 52.13
5607.66 12/30/20 53.70 51.93
Water Levels and Data over Time
White Mesa Mill -Well TWN-19
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
5,659.59 5,661.36 1.77 107.77
5607.75 3/11/21 53.61 51.84
5607.39 6/24/21 53.97 52.20
5607.33 8/11/21 54.03 52.26
5607.81 12/28/21 53.55 51.78
5607.26 2/10/22 54.10 52.33
5606.86 6/28/22 54.50 52.73
5606.94 8/15/22 54.42 52.65
5606.85 11/17/22 54.51 52.74
Water Levels and Data over Time
White Mesa Mill -Well TWN-20
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
5 640.46 5,642.46 2.00 95.5
5 564.53 6/24/21 77.93 75.93
5,564.51 8/11/21 77.95 75.95
5,564.69 12/28/21 77.77 75.77
5,564.52 2/10/22 77.94 75.94
5,564.29 6/28/22 78.17 76.17
5,564.23 8/15/22 78.23 76.23
5,564.28 11/17/22 78.18 76.18
Water Levels and Data over Time
White Mesa Mill -Well TWN-21
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
5,633.08 5,635.08 2.00 105.7
5,555.84 6/24/21 79.24 77.24
5,555.89 8/11/21 79.19 77.19
5,555.93 12/28/21 79.15 77.15
5,555.95 2/10/22 79.13 77.13
5,555.79 6/28/22 79.29 77.29
5,555.81 8/15/22 79.27 77.27
5,555.90 11/17/22 79.18 77.18
Water Levels and Data over Time
White Mesa Mill -Well MW-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
5,613.34 5,614.50 1.16 110
5,534.92 10/24/06 79.58 78.42
5,535.09 3/16/07 79.41 78.25
5,535.46 8/27/07 79.04 77.88
5,535.06 10/15/07 79.44 78.28
5,535.78 3/15/08 78.72 77.56
5,536.26 6/15/08 78.24 77.08
5,536.35 9/15/08 78.15 76.99
5,536.68 11/15/08 77.82 76.66
5,535.42 3/15/09 79.08 77.92
5,537.11 6/30/09 77.39 76.23
5,536.93 9/10/09 77.57 76.41
5,537.23 12/11/09 77.27 76.11
5,537.59 3/11/10 76.91 75.75
5,537.85 5/11/10 76.65 75.49
5,538.37 9/29/10 76.13 74.97
5,537.70 12/21/10 76.8 75.64
5,537.67 2/28/11 76.83 75.67
5,538.31 6/21/11 76.19 75.03
5,538.15 9/20/11 76.35 75.19
5,538.42 12/21/11 76.08 74.92
5,538.54 3/27/12 75.96 74.8
5,538.60 6/28/12 75.9 74.74
5,538.68 9/27/12 75.82 74.66
5,538.99 12/28/12 75.51 74.35
5,539.25 3/28/13 75.25 74.09
5,539.05 6/27/13 75.45 74.29
5,539.60 9/27/13 74.90 73.74
5,539.67 12/20/13 74.83 73.67
5,539.77 3/27/14 74.73 73.57
5,539.40 6/25/14 75.10 73.94
5,539.19 9/25/14 75.31 74.15
5,539.30 12/17/14 75.20 74.04
5,539.01 3/26/15 75.49 74.33
5,538.99 6/22/15 75.51 74.35
5,539.10 9/30/15 75.40 74.24
5,538.90 12/2/15 75.60 74.44
5,539.53 3/30/16 74.97 73.81
5,539.11 6/30/16 75.39 74.23
5,539.05 9/29/16 75.45 74.29
5,539.06 12/21/16 75.44 74.28
5,539.81 3/30/17 74.69 73.53
5,539.60 6/27/17 74.90 73.74
5539.40 9/27/17 75.10 73.94
5539.30 11/30/17 75.20 74.04
5539.55 3/29/18 74.95 73.79
5539.63 6/22/18 74.87 73.71
5539.40 9/26/18 75.10 73.94
5539.59 12/17/18 74.91 73.75
5539.42 3/26/19 75.08 73.92
5539.70 6/24/19 74.80 73.64
5539.45 8/13/19 75.05 73.89
5539.53 11/19/19 74.97 73.81
5539.57 2/13/20 74.93 73.77
5539.27 5/5/20 75.23 74.07
Water Levels and Data over Time
White Mesa Mill -Well MW-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
5,613.34 5,614.50 1.16 110
5539.25 9/22/20 75.25 74.09
5539.41 12/30/20 75.09 73.93
5539.45 3/11/21 75.05 73.89
5539.34 6/24/21 75.16 74.00
5539.32 8/11/21 75.18 74.02
5539.56 12/28/21 74.94 73.78
5539.18 2/10/22 75.32 74.16
5539.02 6/27/22 75.48 74.32
5539.16 8/15/22 75.34 74.18
5538.99 11/17/22 75.51 74.35
Water Levels and Data over Time
White Mesa Mill-Well MW-31
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
5,615.26 5,616.40 1.14 130
5,544.07 10/24/06 72.33 71.19
5,544.45 3/16/07 71.95 70.81
5,536.94 8/27/07 79.46 78.32
5,544.62 10/15/07 71.78 70.64
5,545.37 3/15/08 71.03 69.89
5,544.50 6/15/08 71.90 70.76
5,545.94 9/15/08 70.46 69.32
5,546.42 11/15/08 69.98 68.84
5,546.03 3/15/09 70.37 69.23
5,546.65 6/30/09 69.75 68.61
5,546.45 9/10/09 69.95 68.8 1
5,546.75 12/11/09 69.65 68.51
5,547.09 3/11/10 69.31 68.17
5,547.41 5/11/10 68.99 67.85
5,547.28 9/29/10 69.12 67.98
5,547.45 12/21/10 68.95 67.81
5,547.37 2/28/11 69.03 67.89
5,547.96 6/21/11 68.44 67.3
5,547.65 9/20/11 68.75 67.61
5,548.34 12/21/11 68.06 66.92
5,548.30 3/27/12 68.10 66.96
5,548.40 6/28/12 68.00 66.86
5,548.59 9/27/12 67.81 66.67
5,548.91 12/28/12 67.49 66.35
5,549.14 3/28/13 67.26 66.12
5,548.90 6/27/13 67.50 66.36
5,549.25 9/27/13 67.15 66.01
5,549.16 12/20/13 67.24 66.10
5,548.95 3/27/14 67.45 66.31
5,548.60 6/25/14 67.80 66.66
5,548.19 9/25/14 68.21 67.07
5,548.25 12/17/14 68.15 67.01
5,548.14 3/26/15 68.26 67.12
5,547.85 6/22/15 68.55 67.41
5,548.00 9/30/15 68.40 67.26
5,547.84 12/2/15 68.56 67.42
5,548.35 3/30/16 68.05 66.91
5,548.00 6/30/16 68.40 67.26
5,547.80 9/29/16 68.60 67.46
5,547.80 12/21/16 68.60 67.46
5,548.30 3/30/17 68.10 66.96
5,548.10 6/27/17 68.30 67.16
5,547.93 9/27/17 68.47 67.33
5,547.80 11/30/17 68.60 67.46
5,547.92 3/29/18 68.48 67.34
5,547.95 6/22/18 68.45 67.31
5,547.69 9/26/18 68.71 67.57
5,547.82 12/17/18 68.58 67.44
5,547.56 3/26/19 68.84 67.70
5,547.68 6/24/19 68.72 67.58
5,547.56 8/13/19 68.84 67.70
5,547.58 11/19/19 68.82 67.68
5,547.59 2/13/20 68.81 67.67
5,547.92 5/5/20 68.48 67.34
5,547.18 9/22/20 69.22 68.08
Water Levels and Data over Time
White Mesa Mill-Well MW-31
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) WeU
5,615.26 5 616.40 J.14 130
5,547.29 12/30/20 69.11 67.97
5,547.53 3/11/21 68.87 67.73
5,547.14 6/24/21 69.26 68.12
5,547.07 8/11/21 69.33 68.19
5,547.21 12/28/21 69.19 68.05
5,546.97 2/10/22 69.43 68.29
5,546.65 6/27/22 69.75 68.61
5,546.80 8/15/22 69.60 68.46
5,546.65 11/17/22 69.75 68.61
TabG
Laboratory Analytical Reports
Chemtech-Ford Laboratories 9632 South 500 West
Sandy, UT 84070
0 :[phone] F: [phone]
www. Chem tech Ford. com CHEMTECH·FORD Serving the lntermountain West Since 1953
LA80RATORIES
Energy Fuels Resources, Inc.
Tanner Holliday
6425 South Highway 191
Blanding, UT 84511
Sample ID: PIEZ-01_10252022
Matrix: Water
Date Sampled: 10/25/22 13:45
lnor~anic
Chloride
Nitrate+ Nitrite, Total, as N
Result
73.6
6.36
Project Name: 4th Quarter Nitrate 2022
www.ChemtechFord.com
Units
mg/L
mg/L
Certificate of Analysis
Minimum
Reporting
Limit
1.00
0.200
PO#:
Receipt: 10/27/22 11:55@0.1 °C
Date Reported: 11/17/2022
Project Name: 4th Quarter Nitrate 2022
Sampled By: Tanner Holliday
Method
EPA300.0
EPA 353.2
CtF WO#: 22J2146
Preparation
Date/Time
11 /15/22
11/4/22
Lab ID: 22J2146-07
Analysis
Date/Time
11/16/22
11/4/22
.E!.J!.g_{fil
Page 9 of 23
Chemtech-Ford Laboratories 9632 South 500 West
Sandy, UT 84070
0:[phone] F: [phone]
www.ChemtechFord.com CHEMTECH-FORD Serving the lntermountain West Since 1953
LAsoa;:ATORIES
Energy Fuels Resources, Inc.
Tanner Holliday
6425 South Highway 191
Blanding, UT 84511
Sample ID: PIEZ-02_10252022
Matrix: Water
Date Sampled: 10/25/22 13:30
Inorganic
Chloride
Nitrate+ Nitrite, Total, as N
Result
13.4
0.703
Project Name: 4th Quarter Nitrate 2022
www.ChemtechFord.com
Units
mg/L
mg/L
Certificate of Analysis
Minimum
Reporting
Limit
1.00
0.100
PO#:
Receipt: 10/27/22 11:55@ 0.1 °C
Date Reported: 11/17/2022
Project Name: 4th Quarter Nitrate 2022
Sampled By: Tanner Holliday
Method
EPA300.0
EPA353.2
CtF WO#: 22J2146
Preparation
Date/Time
10/28/22
11/4/22
Lab ID: 22J2146-06
Analysis
Date/Time
10/28/22
11/4/22
Page 8 of 23
I Chemtech-Ford Laboratories 9632 South 500 West
Sandy, UT 84070
0:[phone] F: [phone]
www.ChemtechFord.com CHEMTECH-FORD Serving the lntermountain West Since 1953
lld)ORATORIES
Energy Fuels Resources, Inc.
Tanner Holliday
6425 South Highway 191
Blanding, UT 84511
Sample ID: PIEZ-03A_10252022
Matrix: Water
Date Sampled: 10/25/22 14:10
Inorganic
Chloride
Nitrate+ Nitrite, Total, as N
Result
81.5
11.5
=>roject Name: 4th Quarter Nitrate 2022
vww. ChemtechFord. com
Units
mg/L
mg/L
Certificate of Analysis
Minimum
Reporting
Limit
5.00
0.500
PO#:
Receipt: 10/27/22 11:55@ 0.1 °C
Date Reported: 11/17/2022
Project Name: 4th Quarter Nitrate 2022
Sampled By: Tanner Holliday
Method
EPA300.0
EPA353.2
CtF WO#: 22J2146
Preparation
Date/Time
11/15/22
ll/4/22
Lab ID: 22J2146-08
Analysis
Date/Time
l 1/16/22
I 1/4/22
.E!!lilll
Page 10 of23
I Chemtech-Ford Laboratories 9632 South 500 West
Sandy, UT 84070
0 :[phone] F: [phone]
www. Chem tech Ford. com CHEMTECH·FORD Serving the lntermountain West Since 1953
LABORATORIES
Energy Fuels Resources, Inc.
Tanner Holliday
6425 South Highway 191
Blanding, UT 84511
Sample ID: TWN-01_10252022
Matrix: Water
Date Sampled: 10/25/22 10:38
Inorganic
Chloride
Nitrate+ Nitrite, Total, as N
Result
30.1
2.75
roject Name: 4th Quarter Nitrate 2022
ww. ChemtechFord. com
Units
mg/L
mg/L
Certificate of Analysis
Minimum
Reporting
Limit
1.00
0.100
PO#:
Receipt: 10/27/22 11:55@ 0.1 °C
Date Reported: 11/17/2022
Project Name: 4th Quarter Nitrate 2022
Sampled By: Tanner Holliday
Method
EPA300.0
EPA353.2
CtF WO#: 22J2146
Preparation
Date/Time
10/28/22
11/4/22
Lab ID: 22J2146-04
Analysis
Date/Time
10/28/22
11/4/22
I!J!g{fil
Page 6 of 23
Chemtech-Ford Laboratories
9632 South 500 West
Sandy, UT 84070
0:[phone] F: [phone]
www.ChemtechFord.com CHEMTECH·FORD Serving the lntermountain West Since 1953
LABORATORIES
Energy Fuels Resources, Inc.
Tanner Holliday
6425 South Highway 191
Blanding, UT 84511
Sample ID: TWN-02_10252022
Matrix: Water
Date Sampled: 10/25/22 10:55
Inorganic
Chloride
Nitrate+ Nitrite, Total, as N
48.9
14.0
>reject Name: 4th Quarter Nitrate 2022
rww. ChemtechFord. com
Units
mg/L
mg/L
Certificate of Analysis
Minimum
Reporting
Limit
5.00
0.500
PO#:
Receipt: 10/27/22 11:55@ 0.1 °C
Date Reported: 11/17/2022
Project Name: 4th Quarter Nitrate 2022
Sampled By: Tanner Holliday
Method
EPA300.0
EPA353.2
CtF WO#: 22J2146
Preparation
Date/Time
10/27/22
I 1/4/22
Lab ID: 22J2146-05
Analysis
Date/Time
10/28/22
11/4/22
.Eli!..wl
Page 7 of 23
I Chemtech-Ford Laboratories
9632 South 500 West
Sandy, UT 84070
0:[phone] F: [phone]
www.ChemtechFord.com CHEMTECH·FORD Serving the lntermountain West Since 1953
LABORATORIES
Energy Fuels Resources, Inc.
Tanner Holliday
6425 South Highway 191
Blanding, UT 84511
Sample ID: TWN-03_10262022
Matrix: Water
Date Sampled: 10/26/22 9:35
lnor~anil'
Chloride
Nitrate+ Nitrite, Total, as N
156
26.0
Project Name: 4th Quarter Nitrate 2022
www.ChemtechFord.com
Units
mg/L
mg/L
Certificate of Analysis
Minimum
Reporting
Limit
2.00
1.00
PO#:
Receipt: 10/27/22 11:55@0.1 °C
Date Reported: 11/17/2022
Project Name: 4th Quarter Nitrate 2022
Sampled By: Tanner Holliday
Method
EPA300.0
EPA353.2
CtF WO#: 22J2146
Preparation
Date/Time
10/28/22
11/4/22
Lab ID: 22J2146-12
Analysis
Date/Time
10/28/22
11/4/22
.fu.ml
Page 14 of 23
I Chemtech-Ford Laboratories
9632 South 500 West
Sandy, UT 84070
0 :[phone] F: [phone]
www.ChemtechFord.com CHEMTECH-FORD Serving the lntermountain West Since 1953
Energy Fuels Resources, Inc.
Tanner Holliday
6425 South Highway 191
Blanding, UT 84511
Sample ID: TWN-04_10252022
Matrix: Water
Date Sampled: 10/25/22 9:59
lnor~anic
Chloride
Nitrate+ Nitrite, Total, as N
Result
21.2
1.31
Project Name: 4th Quarter Nitrate 2022
www.ChemtechFord.com
Units
mg/L
mg/L
Certificate of Analysis
Minimum
Reporting
Limit
1.00
0.100
PO#:
Receipt: 10/27/22 11:55@ 0.1 °C
Date Reported: 11/17/2022
Project Name: 4th Quarter Nitrate 2022
Sampled By: Tanner Holliday
EPA300.0
EPA353.2
CtF WO#: 22J2146
Preparation
Date/Time
10/28/22
11/4/22
Lab ID: 22J2146-03
Analysis
Date/Time
10/28/22
11/4/22
Page 5 of 23
Chemtech-Ford Laboratories 9632 South 500 West
Sandy, UT 84070
0:[phone] F: [phone]
www.ChemtechFord.com CHEMTECH·FORD LABORAfO•u:s
Serving the lntermountain West Since 1953
Energy Fuels Resources, Inc.
Tanner Holliday
6425 South Highway 191
Blanding, UT 84511
Sample ID: TWN-07 _ 10262022
Matrix: Water
Date Sampled: 10/26/22 9:20
Inorganic
Chloride
Nitrate+ Nitrite, Total, as N
Result
129
15.7
Project Name: 4th Quarter Nitrate 2022
www.ChemtechFord.com
Units
mg/L
mg/L
Certificate of Analysis
Minimum
Reporting
Limit
2.00
0.500
PO#:
Receipt: 10/27/22 11 :55@ 0.1 °C
Date Reported: 11/17/2022
Project Name: 4th Quarter Nitrate 2022
Sampled By: Tanner Holliday
Method
EPA300.0
EPA353.2
CtF WO#: 22J2146
Preparation
Date/Time
10/28/22
11/4/22
Lab ID: 22J2146-11
Analysis
Date/Time
10/28/22
11/4/22
.E!!g{fil
Page 13 of 23
Chemtech-Ford Laboratories 9632 South 500 West
Sandy, UT 84070
0 :[phone] F: [phone]
www.ChemtechFord.com CHEMTECH·FORD Serving the lntermountain West Since 1953
LABORATORIES
Energy Fuels Resources, Inc.
Tanner Holliday
6425 South Highway 191
Blanding, UT 84511
Sample ID: TWN-18_10252022
Matrix: Water
Date Sampled: 10/25/22 8:15
Inorganic
Chloride
Nitrate+ Nitrite, Total, as N
35.6
0.212
Project Name: 4th Quarter Nitrate 2022
www.ChemtechFord.com
Units
mg/L
mg/L
Certificate of Analysis
Minimum
Reporting
Limit
5.00
0.100
PO#:
Receipt: 10/27/22 11:55@ 0.1 °C
Date Reported: 11/17/2022
Project Name: 4th Quarter Nitrate 2022
Sampled By: Tanner Holliday
Method
EPA300.0
EPA353.2
CtF WO#: 22J2146
Preparation
Date/Time
10/27/22
11/14/22
Lab ID: 22J2146-02
Analysis
Date/Time
10/28/22
11/14/22
Page 4 of 23
Chemtech-Ford Laboratories 9632 South 500 West
Sandy, UT 84070
0:[phone] F: [phone]
www.ChemtechFord.com CHEMTECH-FORD Serving the lntermountain West Since 1953
LABOR•HOAIES
Energy Fuels Resources, Inc.
Tanner Holliday
6425 South Highway 191
Blanding, UT 84511
Sample ID: TWN-18R_10252022
Matrix: Water
Date Sampled: 10/25/22 6:40
lnor~anic
Chloride
Nitrate+ Nitrite, Total, as N
Result
< 1.00
<0.100
Project Name: 4th Quarter Nitrate 2022
www.ChemtechFord.com
Units
mg/L
mg/L
Certificate of Analysis
Minimum
Reporting
Limit
1.00
0.100
PO#:
Receipt: 10/27/22 11:55@ 0.1 °C
Date Reported: 11/17/2022
Project Name: 4th Quarter Nitrate 2022
Sampled By: Tanner Holliday
Method
EPA300.0
EPA353.2
CtF WO#: 22J2146
Preparation
Date/Time
10/28/22
11/14/22
Lab ID: 22J2146-01
Analysis
Date/Time
10/28/22
11/14/22
fug{fil
Page 3 of 23
Chemtech-Ford Laboratories 9632 South 500 West
Sandy, UT 84070
0 :[phone] F: [phone]
www.ChemtechFord.com CHEMTECH·FORD Serving the lntermountain West Since 1953
LABORATORIES
Energy Fuels Resources, Inc.
Tanner Holliday
6425 South Highway 191
Blanding, UT 84511
Sample ID: TWN-20_10262022
Matrix: Water
Date Sampled: 10/26/22 8:30
Inorganic
Chloride
Nitrate+ Nitrite, Total, as N
Result
32.0
0.446
Project Name: 4th Quarter Nitrate 2022
www.ChemtechFord.com
Units
mg/L
mg/L
Certificate of Analysis
Minimum
Reporting
Limit
2.00
0.100
PO#:
Receipt: 10/27/22 11:55@ 0.1 °C
Date Reported: 11/17/2022
Project Name: 4th Quarter Nitrate 2022
Sampled By: Tanner Holliday
Method
EPA300.0
EPA353.2
CtF WO#: 22J2146
Preparation
Date/Time
10/28/22
l 1/4/22
Lab ID: 22J2146-09
Analysis
Date/Time
10/28/22
l l/4/22
Page 11 of 23
Chemtech-Ford Laboratories 9632 South 500 West
Sandy, UT 84070
0 :[phone] F: [phone]
www.ChemtechFord.com CHEMTECH-FORD Serving the lntermountain West Since 1953
LABOR•\TORIES
Energy Fuels Resources, Inc.
Tanner Holliday
6425 South Highway 191
Blanding, UT 84511
Sample ID: TWN-21_10262022
Matrix: Water
Date Sampled: 10/26/22 8:45
lnor~anic
Chloride
Nitrate+ Nitrite, Total, as N
42.3
1.08
Project Name: 4th Quarter Nitrate 2022
www.ChemtechFord.com
Units
mg/L
mg/L
Certificate of Analysis
Minimum
Reporting
Limit
2.00
0.100
PO#:
Receipt: 10/27/22 11:55@0.1 °C
Date Reported: 11/17/2022
Project Name: 4th Quarter Nitrate 2022
Sampled By: Tanner Holliday
Method
EPA300.0
EPA353.2
CtF WO#: 22J2146
Preparation
Date/Time
10/28/22
11/4/22
Lab ID: 22J2146-10
Analysis
Date/Time
I 0/28/22
11/4/22
Page 12 of 23
Chemtech-Ford Laboratories 9632 South 500 West
Sandy, UT 84070
0 :[phone] F: [phone]
www.ChemtechFord.com CHEMTECH-FORD Serving the lntermountain West Since 1953
L.h60~•\TQP.1ES
Energy Fuels Resources, Inc.
Tanner Holliday
6425 South Highway 191
Blanding, UT 84511
Sample ID: TW4-22_11302022
Matrix: Water
Date Sampled: 11/30/22 9:02
lnor~anil.'
Chloride
Nitrate+ Nitrite, Total, as N
\'olatilc Organic Compounds
Carbon Tetrachloride
Chloroform
Chloromethane
Methylene Chloride
601
62.0
< 1.0
2350
< 1.0
1.6
Project Name: 4th Quarter Chloroform 2022
www.ChemtechFord.com
Units
mg/L
mg/L
ug/L
ug/L
ug/L
ug/L
Certificate of Analysis
Minimum
Reporting
Limit
10.0
2.00
1.0
100
1.0
1.0
PO#:
Receipt: 12/2/22 14:10@ -1.2 ·c
Date Reported: 12/16/2022
Project Name: 4th Quarter Chloroform 2022
Sampled By: Tanner Holliday
.Mtl!!!!!!
EPA300.0
EPA353.2
EPA 8260D /5030A
EPA 8260D /5030A
EPA 8260D /5030A
EPA 8260D /5030A
CtF WO#: 22L0202
Preparation
Date/Time
12/7/22
12/7/22
12/5/22
12/5/22
12/5/22
12/5/22
Lab ID: 22L0202-13
Analysis
Date/Time
12/8/22
12/7/22
12/5/22
12/5/22
12/5/22
12/5/22
Flag(s)
Page 15 of 32
I Chemtech-Ford Laboratories 9632 South 500 West
Sandy, UT 84070
0 :[phone] F: [phone]
www.ChemtechFord.com CHEMTECH·FORD Serving the lntermountain West Since 1953
LA60~o\TQAIES
Energy Fuels Resources, Inc.
Tanner Holliday
6425 South Highway 191
Blanding, UT 84511
Sample ID: TW4-24_11302022
Matrix: Water
Date Sampled: 11/30/22 8:55
Chloride
Nitrate + Nitrite, Total, as N
\ olatik Ori.:anil· Compound,
Carbon Tetrachloride
Chloroform
Chloromethane
Methylene Chloride
Result
972
27.6
< 1.0
79.5
< 1.0
< 1.0
Project Name: 4th Quarter Chloroform 2022
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: 12/2/22 14:10@ -1.2 ·c
Date Reported: 12/16/2022
Project Name: 4th Quarter Chloroform 2022
Sampled By: Tanner Holliday
Method
EPA300.0
EPA353.2
EPA 82600 /5030A
EPA 8260D /5030A
EPA 8260D /5030A
EPA 8260D /5030A
CtF WO#: 22L0202
Preparation
Date/Time
12/6/22
12/7/22
12/5/22
12/5/22
12/5/22
12/5/22
Lab ID: 22L0202-02
Analysis
Date/Time
12/7/22
12/7/22
12/5/22
12/5/22
12/5/22
12/5/22
~
Page 4 of 32
Chemtech-Ford Laboratories 9632 South 500 West
Sandy, UT 84070
0 :[phone] F: [phone]
www.ChemtechFord.com CHEMTECH-FORD Serving the lntermountain West Since 1953
tJ,60'tATQRIES
Energy Fuels Resources, Inc.
Tanner Holliday
6425 South Highway 191
Blanding, UT 84511
Sample ID: TW4-25_11302022
Matrix: Water
Date Sampled: 11/30/22 8:45
lnorl,!ltnii:
Chloride
Nitrate+ Nitrite, Total, as N
\ olatili: Or:,:anii: Co111pou1Hls
Carbon Tetrachloride
Chloroform
Chloromethane
Methylene Chloride
Result
67.2
1.47
< 1.0
< 1.0
< 1.0
< 1.0
Project Name: 4th Quarter Chloroform 2022
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: 12/2/22 14:10@ -1.2 °C
Date Reported: 12/16/2022
Project Name: 4th Quarter Chloroform 2022
Sampled By: Tanner Holliday
EPA300.0
EPA353.2
EPA 8260D /5030A
EPA 8260D /5030A
EPA 8260D /5030A
EPA 8260D /5030A
CtF WO#: 22L0202
Preparation
Date/Time
12/5/22
12/7/22
12/5/22
12/5/22
12/5/22
12/5/22
Lab ID: 22L0202-01
Analysis
Date/Time
12/5/22
12/7/22
12/5/22
12/5/22
12/5/22
12/5/22
Flag(s)
MS-Low
Page 3 of 32
Chemtech-Ford Laboratories
9632 South 500 West
Sandy, UT 84070
0:[phone] F: [phone]
www.ChemtechFord.com CHEMTECH·FORD Serving the lntermountain West Since 1953
lA60f;!,\TQRIE5
Energy Fuels Resources, Inc.
Tanner Holliday
6425 South Highway 191
Blanding, UT 84511
Sample ID: TW4-60_11302022
Matrix: Water
Date Sampled: 11/30/22 8:10
I nor~anic..·
Chloride
Nitrate + Nitrite, Total, as N
\"olatilc Organic ( 'om pounds
Carbon Tetrachloride
Chloroform
Chloromethane
Methylene Chloride
< 1.00
<0.100
< 1.0
< 1.0
< 1.0
< 1.0
Project Name: 4th Quarter Chloroform 2022
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: 12/2/22 14:10@ -1.2 ·c
Date Reported: 12/16/2022
Project Name: 4th Quarter Chloroform 2022
Sampled By: Tanner Holliday
Method
EPA300.0
EPA353.2
EPA 8260D /5030A
EPA 8260D /5030A
EPA 8260D /5030A
EPA 8260D /5030A
CtF WO#: 22L0202
Preparation
Date/Time
12/6/22
12/7/22
12/6/22
12/6/22
12/6/22
12/6/22
Lab ID: 22L0202-16
Analysis
Date/Time
12/6/22
12/7/22
12/6/22
12/6/22
12/6/22
12/6/22
fug{fil
J-LOW-L
J-LOW-L
Page 18 of 32
I Chemtech-Ford Laboratories
9632 South 500 West
Sandy, UT 84070
0 :[phone] F: [phone]
www.ChemtechFord.com CHEMTECH·FORD Serving the lntermountain West Since 1953
LABORATORIES
Energy Fuels Resources, Inc.
Tanner Holliday
6425 South Highway 191
Blanding, UT 84511
Sample ID: TWN-60_10262022
Matrix: Water
Date Sampled: 10/26/22 7:05
I nor~anir
Chloride
Nitrate+ Nitrite, Total, as N
< 1.00
< 0. 100
Project Name: 4th Quarter Nitrate 2022
www.ChemtechFord.com
Units
mg/L
mg/L
Certificate of Analysis
Minimum
Reporting
Limit
1.00
0.100
PO#:
Receipt: 10/27/22 11:55@ 0.1 °C
Date Reported: 11/17/2022
Project Name: 4th Quarter Nitrate 2022
Sampled By: Tanner Holliday
EPA300.0
EPA353.2
CtF WO#: 22J2146
Preparation
Date/Time
I 0/31/22
11/4/22
Lab ID: 22J2146-13
Analysis
Date/Time
10/31/22
11 /4/22
.E.!J!g{fil
Page 15 of 23
I Chemtech-Ford Laboratories
9632 South 500 West
Sandy, UT 84070
0:[phone] F: [phone]
www.ChemtechFord.com CHEMTECH·FORD Serving the lntermountain West Since 1953
LABORATORIES
Energy Fuels Resources, Inc.
Tanner Holliday
6425 South Highway 191
Blanding, UT 84511
Sample ID: TWN-65_10262022
Matrix: Water
Date Sampled: 10/26/22 8:30
lnori,:anil·
Chloride
Nitrate+ Nitrite, Total, as N
Result
32.0
0.405
Project Name: 4th Quarter Nitrate 2022
www.ChemtechFord.com
Units
mg/L
mg/L
Certificate of Analysis
Minimum
Reporting
Limit
2.00
0.100
PO#:
Receipt: 10/27/22 11:55@0.1 °C
Date Reported: 11/17/2022
Project Name: 4th Quarter Nitrate 2022
Sampled By: Tanner Holliday
Method
EPA300.0
EPA353.2
CtF WO#: 22J2146
Preparation
Date/Time
l0/28/22
11/4/22
Lab ID: 22J2146-14
Analysis
Date/Time
10/28/22
11/4/22
Page 16 of 23
9632 South 500 West
CHEMTECH-FORD
LABORATORIES
11/17/2022
Work Order: 22.12146
Project: 4th Quarter Nitrate 2022
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 23
CHEMTECH~FORD
LABORATORIES
Energy Fuels Resources, Inc.
Project: 4th Quarter Nitrate 2022
Project Manager: Tanner Holliday
Laboratory ID
22J2146-01
22J2146-02
22J2146-03
22J2146-04
22J2146-05
22J2146-06
22J2146-07
22J2146-08
22J2146-09
22J2146-10
22J2146-11
22J2146-12
22J2146-13
22J2146-14
Sample Name
TWN-18R_10252022
TWN-18_10252022
TWN-04_10252022
TWN-01_10252022
TWN-02_10252022
Pl EZ-02_ 10252022
PIEZ-01_10252022
PIEZ-03A_ 10252022
TWN-20_10262022
TWN-21 _10262022
TWN-07_10262022
TWN-03_10262022
TWN-60_10262022
TWN-65_10262022
Work Order Report Narrative
Sample Preparation
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.
Project Name: 4th Quarter Nitrate 2022
www.ChemtechFord.com
CtF WO#: 22J2146
Page 2 of 23
CHEMTECH·FORD L/180RATOAIE5
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: 10/27/22 11:55@0.1 ·c
Date Reported: 11/17/2022
Project Name: 4th Quarter Nitrate 2022
I mg/L = one milligram per liter or 1 mg/kg= one milligram per kilogram = I part per million.
I 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 = J part per trillion.
Project Name: 4th Quarter Nitrate 2022
www.ChemtechFord.com
CtF WO#: 22J2146
Page 17 of 23
American West
Analytical Laboratories
463 w. 3600 s. Salt Lake City. UT 84115
Phone# [phone] Ton Free# [phone] L~ Fax# [phone] Email [e-mail]
www.awal-labs.com
Client Baerg Faela Reaources, Inc.
Address: 6425 8. Hwy. 191
Blandinc, UT 84511
Contact Tllllller BoWday
Phone#: [phone] Call#:
Email: thollld•~-ervfuela.com; [e-mail]
Project Name: 4th Quarter Nitrate 2022
Projec:t#:
PO#:
Sampler Name: Tllllller BoWday
22J2J4~ Sample ID: l<rfo-Date Sampled
TW11-18R_l0252022 10/25/2022
TWll-18_10252022 10/25/2022
' TWll-04_10252022 10/25/2022
TWll-01_10252022 10/25/2022
TWll-02_10252022 10/25/2022
PIBZ-02_10252022 10/25/2022
PD:Z-01_10252022 10/25/2022
PD:7r03A_10252022 10/25/2022
TWll-20_10262022 10/26/2022
TWll-21_10262022 10/26/2022
I TWll-07_10262022 10/26/2022
1 TWll-03_10262022 10/26/2022
i rr,n-60_10262022 10/26/2022
.. ...,..._ by: -, JI I I L Dale:
~ -... AAA,.,.J \ 1
V Time:
:Mnltane;_ T_......,._ 11""
by: O•o: --Tlmo: ..... _
.... ...-by: o ... , -11me: --by: Dair. -· ;1,me; ...... _
I
Time
Sampled
640
815
959
1038
1055
1330
1345
1410
830
845
920
935
705
-by; .. ---ed by: --
PtinlName:
Rocaived by: -
~Nana:
R-.redby: ---
CHAIN OF CUSTODY
Al aay,i5IOIII beOOflduded uoing NEI.AP ac:aediled melhodaard ■1-wil be n,ported usingAWAL'sdandad analyl•--,_,i;ng
limils(PQL)....., spocificaly,_ed _ onlllis~ or Cuslody-.. altached doaononlation.
AWAI.. Lab Sample Set#
Page 1 of 2
QC Level:
II
Tum Around Time: I UrMSSalhorllffmlQBffl«lthBv•-mode. IDm, Date:
3 Standard
aigned n,potts will be emailed by 5:00 pm on
tho day they an, duo.
X Include EDD: Laborato,y Use Only
LOC1J8 UPLOAD
UCBL lsan,pleow..:
Foeld Filtered For. , Shipped o, hanll dtivered
2 -or~ For Compllance With: fil_.c D NELAP 3 T--
D RCRA
D CWA
4 --~ D SOWA (~Seoled)
D ELAPIA2LA y N
o' D Nll.AP
~ ti D Non-<:ompliance 5Pn,pe,ly-
~ 0 D Other: y N "> Checkedal-e! ~ ... ., ~ 0 y N C t') s .. 0 0 ~ 0 Known Hazards 8 Racaived'Ntiffl C • It) 0 ., -::t. Hoking T1meo 0 ti 8 & 0 E a y N .. Sample Comments ~ "' •
2 w X X Do NOT use for QC
2 w X X
2 w X X 4>1 -l4 IV ,~?>?-~0-P~
Sample Receipt: AH lvt I N NA
2 w X X fl D
~stody Seals K(:OC Complete p on Otw Pedcage
2 w X X I N NA
2 w X X (---tContainers Intact ( --3'Sample Volume OK ~Sample
I N NA
2 w X X ( "JCOC/Labels Linked ( ) Headspace Present (VOC) )on Sample
2 w X ·x N NA (--1 Received on Ice ( ) Temp Blank
2 w X X
~Sample
2 w X X ('j Correct Containers ( ~ithin Hold Time ~Raalld?
(7 COC Included Checked by: -ii,L N
2 w X X i
w· I 2 X X I I I I II
2 w X X II
{'IJ/~./A '/F<!._. '7o Jz 7 / 1-7--Special Instructions:
hn'do /J.h nd /I ,,a Tmo; J ,~
Oale:
T.,,.,
""'"'
111111,t:
"-8•:
,...,..
I
··r2is7v4v0:s90E~fi74 --VvP~ Page 18 of23
I
' ,
l
I
)
I
1
3
-
5
s
American West
Analytical Laboratories
463W. 3600 S. Salt lake City. UT 84115
Phone# [phone] Ton Free# [phone]
L~~ Fax# [phone] Email [e-mail]
www.awal-labs.com
Cf,ent Energy Fuels Raourcea, Inc.
Address: 6425 8. Rwy. 191
BlancUnc, UT 84511
Conlacl: T1111Der Holliday
Phone#: [phone] Cell#:
Email: tholllda~erofae!Leom; KWelnel@,eaerofbela.eom
Project Name: 4th Quarter Nitrate 2022
Project#:
PO#:
Sampler Name: T1111Der Holliday
2Z--Y2'4(o Samele ID: zoP~ Date Samoled
TI0"-65_10262022 10/26/2022
.~by.:.... , .. ~A•-/J...-/lf..L-'"\./ Dal•~
I
~ (Tlmo:
~Na,)e. T_....,..,_ 1131 ....-..,-i,y. Oacr.
i.~~ •••
l11mr. ...... ,,_,
~by: Osle: --tnrne: ~-by: Date: -~ Time: ........ _
I
Time
Samoled
830
Rocaivedby:
P""'-Nam4o
Received by: ,.......,.,_
""-'Name:
Received by:
~nah.R'e
PrinlNaM,
Received by: s-••
Print NanMr.
CHAIN OF CUSTODY
All enely&i& will be conducted uaing NELAP accredtted m-aoo all dais will be repofled using AWAl."s &landerd analyle lists arxl lll!lOrling
limits (POL) ln88S specifically n,quesled olllelwise on this Chain of Custody end/or all---
QC Level:
II
Tum Around Time: I Unless -enangemem lwve been made ..
3 Standard ~-repof1s win be emailed by 5:00 pm on
the day IIHly an, due.
X Include EDD:
I.OCUS UPLOAD
BXCEL
F181d Altered For:
For Compllance With:
□ NELAP
□ RCRA
□ CWA
□ SOWA
□ ELAP/A2LA
C, □ NLLAP c:;-ti □ Non-Compf,ance
~ 0 □ Other: l') e !'2. .. .. X 0 C li l') 0 ]i .. 0 ::IE 0 Known Hazards C • It) 0 .. .... ::t. 0 a. s & 'o E a .. Samole Comments .. "' •
2 w X X
/"I / .////4"/ Del.tr /0, 2-7712-Special Instructions:
11:n rd P., /l .,//l;(} Of/ ..?7 m-. i /06'
UBlfr
Tnne:
Ou:
[T"ime:
iuae:
rnme:
AWAJ.. Lab Sample Set#
Page 2 of 2
IOuc Date:
I
Laboratory Use Only
ls-n,,ieswen,:
1 StoillPOd Of hand tlOI .......
2 -orCllllled
3 r.........-. o. I ·c
4 RecaivedB~
(Improperly-)
y N
5 Properly Praoerved
y N
CMaedatbench
y N
8 RecalvedWllhin
Holding limes
y N
lcocr-w..-.
1 PreoentonO..-P-..ge
y N NA
2 Urooken on Otnr ~
y N NA
3 -onSample
y N NA
4 llnllrol<enonSemple
y N NA
-Sample
~-coc Reaxd7
y N
Page 19 of 23
Analyte
QC Sample ID: BWJ1349-BLKI
Date Prepared: 10/27/2022
Chloride
QC Sample ID: BWJ138I-BLK1
Date Prepared: 10/28/2022
Chloride
QC Sample ID: BWJJ405-BLKI
Date Prepared: I 0/28/2022
Chloride
QC Sample ID: BWJ1451-BLK1
Date Prepared: I 0/31/2022
Chloride
QC Sample ID: BWK0736-BLK1
Date Prepared: 11 /I 5/2022
Chloride
QC Sample ID: BWJ1349-BS1
Date Prepared: 10/27/2022
Chloride
QC Sample ID: BWJJ381-BSI
Date Prepared: I 0/28/2022
Chloride
QC Sample ID: BWJ1405-BS1
Date Prepared: 10/28/2022
Chloride
QC Sample ID: BWJl451-BSI
Date Prepared: 10/3 J /2022
Chloride
QC Sample ID: BWK0736-BS1
Date Prepared: 11/15/2022
Chloride
QC Sample ID: BWJ1349-MSI
Date Prepared: 10/27/2022
Chloride
QC Sample ID: BWJ1349-MS2
Date Prepared: 10/27/2022
Chloride
QC Sample ID: BWJ1381-MS1
Date Prepared: 10/28/2022
Chloride
QC Sample ID: BWJ1381-MS2
Date Prepared: 10/28/2022
Chloride
CtF WO#: 22J2146
www. Chem tech Ford. com
QC Report for Work Order (WO) -22J2146
%Rec RPD Limits RPD Max Result Source Cone Spk Value MRL DF
Blank -EPA 300.0
Batch: BWJ1349
Date Analyzed: 10/28/2022 Units: mg/L
ND 1.00 1.00
Batch: BWJ1381
Date Analyzed: 10/28/2022 Units: mg/L
ND 1.00 1.00
Batch: BWJ1405
Date Analyzed: I 0/28/2022 Units: mg/L
ND 1.00 1.00
Batch: BWJ1451
Date Analyzed: 10/31/2022 Units: mg/L
ND 1.00 1.00
Batch: BWK0736
Date Analyzed: 11/16/2022 Units: mg/L
ND 1.00 1.00
LCS -EPA 300.0
Batch: BWJ1349
Date Analyzed: 10/28/2022 Units: mg/L
101 90 -110 50.3 50.0 1.00 1.00
Batch: BWJJ381
Date Analyzed: 10/28/2022 Units: mg/L
101 90 -110 50.3 50.0 1.00 1.00
Batch: BWJ1405
Date Analyzed: 10/28/2022 Units: mg/L
101 90 -110 50.5 50.0 1.00 1.00
Batch: BWJ1451
Date Analyzed: I 0/31/2022 Units: mg/L
96.6 90-110 48.3 50.0 1.00 1.00
Batch: BWK0736
Date Analyzed: 11/16/2022 Units: mg/L
99.9 90 -110 49.9 50.0 1.00 1.00
Matrix Spike -EPA 300.0
Batch: BWJ1349 QC Source Sample: XXXXXXX-XX
Date Analyzed: 10/28/2022 Units: mg/L
100 80 -120 41.4 30.3 11.1 1.11 1.00
Batch: BWJ1349 QC Source Sample: 2212146-02
Date Analyzed: 10/28/2022 Units: mg/L
102 80 -120 86.8 35.6 50.0 5.50 1.00
Batch: BWJ1381 QC Source Sample: XXXXXXX-XX
Date Analyzed: 10/28/2022 Units: mg/L
90.9 80 -120 185 93.8 100 11.0 1.00
Batch: BWJ1381 QC Source Sample: XXXXXXX-XX
Date Analyzed: 10/28/2022 Units: mg/L
96.6 80 -120 207 110 100 11 .0 1.00
Page 20 of 23
QC Report for Work Order (WO) -22J2146
Analyte % Rec RPD Limits RPD Max Result Source Cone
Matrix Spike -EPA 300.0 (cont.)
QC Sample ID: BWJ1405-MSI Batch: BWJ1405 QC Source Sample: XXXXXXX-XX
Date Prepared: I 0/28/2022 Date Analyzed: I 0/28/2022 Units: mg/L
Chloride 101 80 -120 101 ND
QC Sample ID: BWJ1405-MS2 Batch: BWJ1405 QC Source Sample: XXXX:XXX-XX
Date Prepared: I 0/28/2022 Date Analyzed: 10/29/2022 Units: mg/L
Chloride 53.0 80 -120 1140 1040
QM-4X -The spike recovery was outside of QC acceptance limits for the MS and/or MSD due to analyte concentration
at 4 times or greater the spike concentration. The QC batch was accepted based on LCS and/or LCSD recoveries
within the acceptance limits.
QC Sample ID: BWJ1451-MS1 Batch: BWJ1451 QC Source Sample: XXXXXXX-XX
Date Prepared: I 0/31 /2022 Date Analyzed: 10/31/2022 Units: mg/L
Chloride 69.3 80 -120 360 222
QM-010 -The MS recovery was outside acceptance limits but passed Duplicate Spike acceptance limits. The batch
was accepted based on the acceptability of the MSD as the batch Spike.
QC Sample ID: BWJ1451-MS2 Batch: BWJ1451 QC Source Sample: XXXXXXX-XX
Date Prepared: 10/31/2022 Date Analyzed: 10/31/2022 Units: mg/L
Chloride 82.3 80 -120 93.1 10.8
QC Sample ID: BWK0736-MSI Batch: BWK0736 QC Source Sample: XXXXXXX-XX
Date Prepared: 11/15/2022 DateAnalyzed: 11/16/2022 Units: mg/L
Chloride -2410 80 -120 1690 1960
QM-4X -The spike recovery was outside of QC acceptance limits for the MS and/or MSD due to analyte concentration
at 4 times or greater the spike concentration. The QC batch was accepted based on LCS and/or LCSD recoveries
within the acceptance limits.
Matrix Spike Dup -EPA 300.0
QC Sample ID: BWJ1349-MSDI Batch: BWJ1349 QC Source Sample: XXXXXXX-XX
Date Prepared: 10/27/2022 Date Analyzed: I 0/28/2022 Units: mg/L
Chloride 103 0.722 80 -120 20 41.7 30.3
QC Sample ID: BWJ1349-MSD2 Batch: BWJI 349 QC Source Sample: 2212146-02
Date Prepared: 10/27/2022 Date Analyzed: I 0/28/2022 Units: mg/L
Chloride 102 0.349 80 -120 20 86.5 35.6
QC Sample ID: BWJ1381-MSDI Batch: BWJ1381 QC Source Sample: XX:XXXXX-XX
Date Prepared: 10/28/2022 Date Analyzed: 10/28/2022 Units: mg/L
Chloride 91.5 0.319 BO -120 20 185 93.8
QC Sample ID: BWJ1381-MSD2 Batch: BWJ1381 QC Source Sample: XXXXXXX-XX
Date Prepared: I 0/28/2022 Date Analyzed: 10/28/2022 Units: mg/L
Chloride 99.7 1.47 80 -120 20 210 110
QC Sample ID: BWJ1405-MSDI Batch: BWJ1405 QC Source Sample: XXXXXXX-XX
Date Prepared: 10/28/2022 Date Analyzed: 10/28/2022 Units: mg/L
Chloride 98.9 2.22 80 -120 20 98 .9 ND
QC Sample ID: BWJ1405-MSD2 Batch: BWJ1405 QC Source Sample: XXXXXXX-XX
Date Prepared: 10/28/2022 Date Analyzed: I 0/29/2022 Units: mg/L
Chloride 49.1 0.688 BO -120 20 1130 1040
QM-4X -The spike recovery was outside of QC acceptance limits for the MS and/or MSD due to analyte concentration
at 4 times or greater the spike concentration. The QC batch was accepted based on LCS and/or LCSD recoveries
within the acceptance limits.
QC Sample ID: BWJ1451-MSDI
Date Prepared: 10/31/2022
Chloride
CtF WO#: 22J2146
www.ChemtechFord.com
Batch: BWJ1451 QC Source Sample: XXXXXXX-XX
Date Analyzed: 10/31/2022 Units:
82.9 7.25 80 -120 20 388 222
mg/L
Spk Value MRL DF
100 11.0 1.00
200 22.0 1.00
200 20.0 1.00
100 10.0 1.00
11.1 1.11 1.00
11.1 1.11 1.00
50.0 5.50 1.00
100 11.0 1.00
100 11.0 1.00
100 11.0 1.00
200 22.0 1.00
200 20.0 1.00
Page 21 of 23
QC Report for Work Order (WO) -22J2146
Analyte % Rec RPD Limits RPO Max Result Source Cone
Matrix Spike Dup -EPA 300.0 (cont.)
QC Sample ID: BWJI 45 l-MSD2 Batch: BWJ1451 QC Source Sample: XXXXXXX-XX
Date Prepared: 10/31/2022 Date Analyzed: I 0/31 /2022 Units: mg/L
Chloride 81.8 0.549 80 -120 20 92.6 10.8
QC Sample ID: BWK.0736-MSDl Batch: BWK.0736 QC Source Sample: XXXXXXX-XX
Date Prepared: 11/15/2022 DateAnalyzed: 11/16/2022 Units: mg/L
Chloride -2440 0.249 80 -120 20 1690 1960
QM-4X -The spike recovery was outside of QC acceptance limits for the MS and/or MSD due to analyte concentration
at 4 times or greater the spike concentration. The QC batch was accepted based on LCS and/or LCSD recoveries
within the acceptance limits.
CtF WO#: 22J2146
www.ChemtechFord.com
SpkValue MRL DF
100 10.0 1.00
11.1 1.11 1.00
Page 22 of 23
Analyte
QC Sample ID: BWK0214-BLK1
Date Prepared: 11/04/2022
Nitrate + Nitrite, Total, as N
QC Sample ID: BWK0598-BLK1
Date Prepared: 11/14/2022
Nitrate + Nitrite, Total, as N
QC Sample ID: BWK0214-BSI
Date Prepared: 11/04/2022
Nitrate + Nitrite, Total, as N
QC Sample ID: BWK0598-BS1
Date Prepared: 11/14/2022
Nitrate + Nitrite, Total, as N
QC Sample ID: BWK0214-MS1
Date Prepared: 11 /04/2022
Nitrate+ Nitrite, Total, as N
QC Sample ID: BWK0214-MS2
Date Prepared: 11/04/2022
Nitrate+ Nitrite, Total, as N
QC Sample ID: BWK0598-MS 1
Date Prepared: 11/14/2022
Nitrate + Nitrite, Total, as N
QC Sample ID: BWK0598-MS2
Date Prepared: 11 /14/2022
Nitrate+ Nitrite, Total, as N
QC Sample ID: BWK0214-MSD1
Date Prepared: 11/04/2022
Nitrate + Nitrite, Total, as N
QC Sample ID: BWK0214-MSD2
Date Prepared: 11/04/2022
Nitrate + Nitrite, Total, as N
QC Sample ID: BWK0598-MSDI
Date Prepared: 11/14/2022
Nitrate + Nitrite, Total, as N
QC Sample ID: BWK0598-MSD2
Date Prepared: 11/14/2022
Nitrate + Nitrite, Total, as N
CtF WO#: 22J2146
www.ChemtechFord.com
QC Report for Work Order (WO) -22J2146
% Rec RPO Limits RPO Max Result Source Cone SpkValue MRL OF
Blank -EPA 353.2
Batch: BWK0214
Date Analyzed: 11/04/2022 Units: mg/L
ND 0.100 1.00
Batch: BWK0598
DateAnalyzed: 11/14/2022 Units: mg/L
ND 0.100 1.00
LCS -EPA 353.2
Batch: BWK0214
Date Analyzed: 11/04/2022 Units: mg/L
97.8 80 -120 1.96 2.00 0.100 1.00
Batch: BWK0598
Date Analyzed: 11/14/2022 Units: mg/L
94.9 80 -120 1.90 2.00 0.100 1.00
Matrix Spike -EPA 353.2
Batch: BWK0214 QC Source Sample: 22J2 l 46-07
Date Analyzed: 11 /04/2022 Units: mg/L
118 80 -120 7.54 6.36 1.00 0.200 2.00
Batch: BWK0214 QC Source Sample: XXXXXXX-XX
Date Analyzed: 11/04/2022 Units: mg/L
95.8 80 -120 0.958 ND 1.00 0.100 1.00
Batch: BWK0598 QC Source Sample: XXXXXXX-XX
Date Analyzed: 11/14/2022 Units: mg/L
98.6 80 -120 1.23 0.244 1.00 0.100 1.00
Batch: BWK0598 QC Source Sample: XXXXXXX-:XX
Date Analyzed: 11/14/2022 Units: mg/L
94.8 80 -120 1.82 0.874 1.00 0.100 1.00
Matrix Spike Dup -EPA 353.2
Batch: BWK0214 QC Source Sample: 2212146-07
Date Analyzed: 11/04/2022 Units: mg/L
116 0.186 80 -120 20 7.53 6.36 1.00 0.200 2.00
Batch: BWK0214 QC Source Sample: XXXXXXX-XX
Date Analyzed: 11/04/2022 Units: mg/L
96.8 1.04 BO -120 20 0.968 ND 1.00 0.100 1.00
Batch: BWK0598 QC Source Sample: XXXXXXX-XX
Date Analyzed: 11/14/2022 Units: mg/L
105 5.07 BO -120 20 1.29 0.244 1.00 0.100 1.00
Batch: BWK0598 QC Source Sample: XXXXXXX-XX
Date Analyzed: 11/14/2022 Units: mg/L
93.1 0.937 80 -120 20 1.80 0.874 1.00 0.100 1.00
Page 23 of 23
9632 South 500 West
CHEMTECH~FORD
L"80~•\TORIES
12/16/2022
Work Order: 22L0202
Project: 4th Quarter Chloroform 2022
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 32
CHEMTECH-FORD
LABOJ'!Af(}RlfS
Energy Fuels Resources, Inc.
Project: 4th Quarter Chloroform 2022
Project Manager: Tanner Holliday
Laboratory ID
22L0202-01
22L0202-02
22L0202-03
22L0202-04
22L0202-05
22L0202-06
22L0202-07
22L0202-08
22L0202-09
22L0202-10
22L0202-11
22L0202-12
22L0202-13
22L0202-14
22L0202-15
22L0202-16
22L0202-17
Sample Name
TW4-25_11302022
TW4-24_ 11302022
TW4-40_11302022
MW-26_ 11302022
TW4-02_11302022
TW4-39_11302022
TW4-01_ 11302022
TW4-04_11302022
TW4-41_11302022
TW4-21_ 11302022
MW-04_ 11302022
TW4-11 _ 11302022
TW4-22_ 11302022
TW4-19_11302022
TW4-37_11302022
TW4-60_ 11302022
Trip Blank
Work Order Report Narrative
Sample Preparation
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
BWL0243, which also contained sample 22L0202-16 had low LCS recoveries for Carbon Tetrachloride and
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 these analytes.
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.
Project Name: 4th Quarter Chloroform 2022
www.ChemtechFord.com
CtF WO#: 22L0202
Page 2 of 32
I
CHEMTECH-FORD LA6O-IAT0Rlf'j
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: 12/2/22 14:10@ -1.2 °C
Date Reported: 12/16/2022
Project Name: 4th Quarter Chloroform 2022
I mg/L = one milligram per liter or I mg/kg= one milligram per kilogram = I 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
J-LOW-L = Estimated low due to low recovery ofLCS
MS-Low= Estimated low due to Matrix Spike recovery.
Project Name: 4th Quarter Chloroform 2022
www.ChemtechFord.com
CtF WO#: 22L0202
Page 20 of 32
American West
Analytical Laboratories CHAIN OF CUSTODY
463 W 3600 S, Sall Lake City, UT 84115
Phone# [phone] Toll Free# (888' 263-8686
All anolysie Yt'ill be condud.ed using NELAP accredHed methods end ell det1J will be reported using AWAL's standard anelyte llsts ,end reporting
limils (PQL) unless spedficslly requested olherwiBe on this Chain of Custody and/or attached documentBlion
AWAL Lab Sample Set#
Page 1 of 2
1 I QC Level: I Tum Around Time: UnlffSS other arrangements have been mede, I°""""'' I signed reports 'MIi be emailed by 5:00 pm on
3 Standard lhe day they ere due.
l K Include EDD: Laboratory Use Only
6425 S. Hwy. 191 LOCUS UPLOAD
Address: EXCEL Samples Went:
Blanding, UT 84511 Field Filtered For.
1 Shippo:I or n.and dolJvored
Contact: Tanner Holliday 2 Ambient or Chilled
1435) 678-2221 For Compliance With: -L'Z-·c Phone#: Cell#: □ NELAP 3 Temperature
thollid•y(~enerl,'J'faela.com; KWeinelfa:eaerafaela.com □ RCRA
Emal: □ CWA 4 Received Broken/l.eeklng
4th Quarter Chloroform 2022 □ SOWA (lmpropeMy Sealed)
Project Name: □ ELAP/A2LA y N
0 D NLLAP
Project#: ~ c □ Non-Compliance 5 Property Pr858rved c,j C □ Other. y N
PO#: II) "l G' f? ~ .. C Checked at bench
" ., -c: C'I 0 \0 y N Tanner Holliday C: Sampler Name: s ni i C c~ :; C !:!!_ Known Hazards 6 Recetved Within C: l/) 0 ., -:::t_ ~ Holding Times Time u "li N & 'o E i u g y N
Sample ID: Date Sampled Sampled 111 Sample Comments .. (/)
TW4-25_11302022 11/30/2022 845 5 w X X X
2 TW4-24_11302022 11/30/2022 855 5 w X X X COC Tape Wes:
TW4-40_11302022 11/30/2022 1015 5 w X X X 1 Present on Oute1 Package
y N NA
IIIW-26_11302022 11/30/2022 922 5 w X X X 2 Unbroken on Outer Package
TW4-02_11302022 11/30/2022 936 5 w X X X y N NA
TW4-39 _11302022 11/30/2022 915 5 w X X X 3 Present on Sample
y N NA
TW4-01_11302022 11/30/2022 952 5 w X X X 4 Unbroken on Sample
TW4-04_11302022 11/30/2022 1007 5 w X X X ~ N NA
~ TW4-41_11302022 11/30/2022 1000 5 w X X X (?lscrepencies Belw9en Sample
10 , TW4-21_11302022 11/30/2022 835 5 w X X X labels and COC Record?
y N
IIIW-04_11302022 11/30/2022 946 5 w X X X
12 : TW4-11_11302022 11/30/2022 930 5 w X X X
, TW4-22_11302022 11/30/2022 902 5 'f X X X
Roi,-,-t,y-...:J Jj rJ · L Onie· Roc:olvod br, / .A1/~ D"1o: //l/1-ft?,,, Special Instructions: Slonah.<o ,.,. ••"' , _ ""' ,vu= Skm11Ulro __,.,
'-J rim,,, r --l'Jmn ' '11 lD Prfnl Nam'a T.11nna, Hcll\rd.111~ 1100 Pnnl Nmno 7;u ( 'jf(..,
R•U"'l'•ohod by: Ont• Received by: / Date: See the Analytical Scope of Work for Reporting Limits and voe
IS!orwu,o S!nnatu_re nnalyH: list.
ITlnl0
T1o,o DI-It W(~) 110-; 6\-\ta f\P l'Z,~O N (l,1:,1_ Pril'l'I Nllfflo: Print Name: -Rolln<p"1od oy: Dnlo Received by: . O•t Samele Receiet Conditions: S.loniih.ua Slanllt:ure
~0<1 C:on,.,no,, T1m.-Tlmo vf(°ustody Se.ii---Prc:ient ( ) Headspace Present (VOC) -
Pllm NAffllr. Prtnt Nemo, ~n"1iners lnto<I ~lncl<lded t 1 TQ1r1pemturec B1M\( -Relinqul&hed by: Oate Rec:etvecl tJy: Date: ~COl'nPlCl~ ~colv'1<l w112zt Signature Slgnelure ~ ,ind l.'lbel, l\.!~t<h
Tlmo ewe.don Ice-t1cn1 S..'lmpl~ Volume -n me C hecli NI by.
Prin1 flle.mA. Print Name
·u5 ,z \01 '44'1 0~ 9~lil 4qo~ Page 21 of 32
American West
Analytical Laboratories
463 W 3600 S Sall Lake City, UT 84115
Phone# [phone] Toll Free I' [phone] L~ Fax# [phone] Email awal@awal-labs com
www.awal-labs.com
1., 7-l 01., 0 ·7__ Client: Energy Fuels Resources, Inc.
Address: 6425 B. Hwy. 191
Blanding, UT 84511
Conlact: Tanner Holliday
Phone#: [phone] Cell#:
Email: thollld•:,(-erofael.o.com; KWelnel(a_enerofael.o,com
Projecl Name: 4th Quarter Chloroform 2022
Project#:
PO#:
Sampler Name: Tanner Holliday
Samole ID: Date Samoled
10 , TW4-19_11302022 11/30/2022
15 i TW4-37_11302022 11/30/2022
10 I TW4-60_11302022 11/30/2022
17 'TRIPBLAKK 11/30/2022
18 I
' IQ
I 20
I
'.
I
I
'
I
Rollnquh>)od by· ll-t,.//-1.... 0:do:
Slon'""'" ~ • ..,.,.,. ./1/ 1211',....,
() Tlmo
Pri,.N11m11; TmllWK Hollldnv IIOC
Relinquished by: Osta:
Slaneture
Tlme:
PlintName:
Reltnqulshed by.-Date:
Slonature
Tlme:
PrtntName:
Rel-by: PMe:
Slo11atum
Time
Prtnl Neme.
I
Time
Samoled
820
908
810
810
CHAIN OF CUSTODY
Ari analvsi& will be conduciod 1.l&tng NELAP ac:c,adllad methods and at! dllla will be reported using AWAl's st.andarrl analvte llsls and repcn1ing
limlts (POL) unk,8a apectflcally requested~~ on lhia Chain of Custody and/or attached documantaOoo
QC Level: I Tum Around Time: Uniess other arrangement& have been made,
signed reports wUI be emailed by 5:00 pm on
3 Standard Iha day they are due
X Include EDD:
LOCUS UPLOAD
EXCEL
Field Filtered For.
For Compliance With:
D NELAP
D RCRA
D CWA
D SDWA
D ELAP/ A2LA
o' D NLLAP
~ 0 D Non-Compliance ~ 0 Q" D Other:
!:2. "l I!! " ... 0 a, 0 I() C: :s ('I) 0 "' ]j :! i 0 ~ Known Hazards 8 ., lJ) ..... :t. • ii "' t) & 0 ~ 2 u g .. "' Samole Comments
s w X X X
5 w X X X
5 w X X X
3 w X
,,,,,,,,,.
~ :::.."':11v-~R Onlr. f 1./'t /1,1., Special Instructions:
Prl,._Nt;;.' Hru ~ Tfm,. l"l i 0
AWAL Lab Sample Sel #
Page 2 of 2
I°"" Date I
Laboratory Use Only
Samples Were
1 Shipped or hand d&livared
2 Ambient or Chilled -\.l,-·c 3 TemperBtunt
4 Received Broken/Leaking
(11111>"'perly Sealed)
y N
~ PropeJiy PrNerved
y N
Checked at bench
y N
8 Re<aved Within
Holding Times
y N
COC Tape Waa:
' PrNenl on Outer Padtege
y N NA
2 Unbroken on Outer Pac:l(age
y N NA
3 Present on Sample
y N NA
4 Unbroken on Sample
y N NA
Disa-epancie& Betv..en Sample
labels and CCC Raa>td?
y N
Received by: Dato See the Analytiral Scope of Work for Reporting Limits and VOC
S.ia.nat.u.r1:1 analyte list.
Tlme:
PrtntNeme·
Received by: Dato
Slanahn
Tima:
PrtntNtunfl
Received by: Data:
s;gn:,lura
Time:
PrinlNAIM
Page 22 of 32
QC Report for Work Order (WO) -22L0202
Analyte % Rec RPO Limits RPO Max Result Source Cone Spk Value MRL OF
Blank -EPA 300.0
QC Sample ID: BWL0152-BLK1 Batch: BWL0152
Date Prepared: 12/05/2022 Date Analyzed: 12/05/2022 Units: mg/L
Chloride ND 1.00 1.00
QC Sample ID: BWL0199-BLK1 Batch: BWL0199
Date Prepared: 12/06/2022 Date Analyzed: 12/06/2022 Units: mg/L
Chloride ND 1.00 1.00
QC Sample ID: BWL0207-BLK1 Batch: BWL0207
Date Prepared: 12/06/2022 Date Analyzed: 12/07/2022 Units: mg/L
Chloride ND 1.00 1.00
QC Sample ID: BWL0284-BLK1 Batch: BWL0284
Date Prepared: 12/07/2022 DateAnalyzed: 12/07/2022 Units: mg/L
Chloride ND 1.00 1.00
QC Sample ID: BWL0296-BLK1 Batch: BWL0296
Date Prepared: 12/07/2022 Date Analyzed: 12/08/2022 Units: mg/L
Chloride ND 1.00 1.00
LCS -EPA 300.0
QC Sample ID: BWL0152-BS1 Batch: BWL0152
Date Prepared: 12/05/2022 Date Analyzed: 12/05/2022 Units: mg/L
Chloride 98.6 90 -110 49.3 50.0 1.00 1.00
QC Sample ID: BWL0199-BS1 Batch: BWL0199
Date Prepared: 12/06/2022 Date Analyzed: 12/06/2022 Units: mg/L
Chloride 104 90 -110 52.2 50.0 1.00 1.00
QC Sample ID: BWL0207-BS1 Batch: BWL0207
Date Prepared: 12/06/2022 Date Analyzed: 12/07/2022 Units: mg/L
Chloride 104 90 -110 51.8 50.0 1.00 1.00
QC Sample ID: BWL0284-BS1 Batch: BWL0284
Date Prepared: 12/07/2022 Date Analyzed: 12/07/2022 Units: mg/L
Chloride 104 90 -110 52.1 50.0 1.00 1.00
QC Sample ID: BWL0296-BS1 Batch: BWL0296
Date Prepared: 12/07/2022 Date Analyzed: 12/08/2022 Units: mg/L
Chloride 104 90 -110 51 .8 50.0 1.00 1.00
Matrix Spike -EPA 300.0
QC Sample ID: BWL0152-MS1 Batch: BWL0152 QC Source Sample: 22L0202-0l
Date Prepared: 12/05/2022 Date Analyzed: 12/05/2022 Units: mg/L
Chloride 69.7 80 -120 75.0 67.2 11 .1 1.11 1.00
QM-4X -The spike recovery was outside of QC acceptance limits for the MS and/or MSD due to analyte concentration
at 4 times or greater the spike concentration. The QC batch was accepted based on LCS and/or LCSD recoveries
within the acceptance limits.
QC Sample ID: BWL0152-MS2 Batch: BWL0152 QC Source Sample: XXXXXXX-XX
Date Prepared: 12/05/2022 Date Analyzed: 12/05/2022 Units: mg/L
Chloride 94.1 80 -120 122 28.0 100 11 .0 1.00
QC Sample ID: BWL0199-MS1 Batch: BWL0199 QC Source Sample: XXXXXXX-XX
Date Prepared: 12/06/2022 Date Analyzed: 12/06/2022 Units: mg/L
Chloride 97.1 80 -120 127 116 11.1 1.11 1.00
QC Sample ID: BWL0199-MS2 Batch: BWL0199 QC Source Sample: XXXXXXX-XX
Date Prepared: 12/06/2022 Date Analyzed: 12/06/2022 Units: mg/L
Chloride 98.2 80 -120 128 117 11.1 1.11 1.00
CtF WO#: 22L0202
www.ChemtechFord.com Page 23 of 32
QC Report for Work Order (WO) -22L0202
Analyte %Rec RPO Limits RPO Max Result Source Cone Spk Value MRL OF
Matrix Spike -EPA 300.0 (cont.)
QC Sample ID: BWL0207-MSl Batch: BWL0207 QC Source Sample: XXXXXXX-XX
Date Prepared: 12/06/2022 Date Analyzed: 12/07/2022 Units: mg/L
Chloride 102 80 -120 108 6.35 100 11.0 1.00
QC Sample ID: BWL0207-MS2 Batch: BWL0207 QC Source Sample: XXXXXXX-XX
Date Prepared: 12/06/2022 Date Analyzed: 12/07/2022 Units: mg/L
Chloride 111 BO -120 573 462 100 11 .0 1.00
QC Sample ID: BWL0284-MSl Batch: BWL0284 QC Source Sample: XXXXXXX-XX
Date Prepared: 12/07/2022 Date Analyzed: 12/07/2022 Units: mg/L
Chloride 96.6 BO -120 117 20.1 100 11.0 1.00
QC Sample ID: BWL0284-MS2 Batch: BWL0284 QC Source Sample: XXXXXXX-XX
Date Prepared: 12/07/2022 Date Analyzed: 12/07/2022 Units: mg/L
Chloride 99.8 80 -120 132 32.6 100 11.0 1.00
QC Sample ID: BWL0296-MSl Batch: BWL0296 QC Source Sample: XXXXXXX-XX
Date Prepared: 12/07/2022 Date Analyzed: 12/08/2022 Units: mg/L
Chloride 108 80-120 190 81 .5 100 11 .0 1.00
QC Sample ID: BWL0296-MS2 Batch: BWL0296 QC Source Sample: XXXXXXX-XX
Date Prepared: 12/07/2022 Date Analyzed: 12/08/2022 Units: mg/L
Chloride 80.4 BO -120 467 386 100 11.0 1.00
Matrix Spike Dup -EPA 300.0
QC Sample ID: BWL0152-MSD1 Batch: BWL0152 QC Source Sample: 22L0202-01
Date Prepared: 12/05/2022 Date Analyzed: 12/05/2022 Units: mg/L
Chloride 47.1 3.42 BO -120 20 72.5 67.2 11.1 1.11 1.00
QM-4X -The spike recovery was outside of QC acceptance limits for the MS and/or MSD due to analyte concentration
at 4 times or greater the spike concentration. The QC batch was accepted based on LCS and/or LCSD recoveries
within the acceptance limits.
QC Sample ID: BWL0152-MSD2 Batch: BWL0152 QC Source Sample: XXXXXXX-XX
Date Prepared: 12/05/2022 Date Analyzed: 12/05/2022 Units: mg/L
Chloride 94.6 0.432 80 -120 20 123 28.0 100 11 .0 1.00
QC Sample ID: BWL0199-MSD1 Batch: BWL0199 QC Source Sample: XXXXXXX-XX
Date Prepared: 12/06/2022 Date Analyzed: 12/06/2022 Units: mg/L
Chloride 97.1 0.000633 80-120 20 127 116 11.1 1.11 1.00
QC Sample ID: BWL0199-MSD2 Batch: BWL0199 QC Source Sample: XXXXXXX-XX
Date Prepared: 12/06/2022 Date Analyzed: 12/06/2022 Units: mg/L
Chloride 97.3 0.0801 80 -120 20 128 117 11.1 1.11 1.00
QC Sample ID: BWL0207-MSD1 Batch: BWL0207 QC Source Sample: XXXXXXX-XX
Date Prepared: 12/06/2022 Date Analyzed: 12/07/2022 Units: mg/L
Chloride 99.5 1.92 80 -120 20 106 6.35 100 11 .0 1.00
QC Sample ID: BWL0207-MSD2 Batch: BWL0207 QC Source Sample: XXXXXXX-XX
Date Prepared: 12/06/2022 Date Analyzed: 12/07/2022 Units: mg/L
Chloride 109 0.309 80 -120 20 571 462 100 11.0 1.00
QC Sample ID: BWL0284-MSD1 Batch: BWL0284 QC Source Sample: XXXXXXX-XX
Date Prepared: 12/07/2022 Date Analyzed: 12/07/2022 Units: mg/L
Chloride 94.2 2.06 80 -120 20 114 20.1 100 11.0 1.00
QC Sample ID: BWL0284-MSD2 Batch: BWL0284 QC Source Sample: XXXXXXX-XX
Date Prepared: 12/07/2022 Date Analyzed: 12/07/2022 Units: mg/L
Chloride 99.7 0.0615 80 -120 20 132 32.6 100 11 .0 1.00
CtF WO#: 22L0202
www.ChemtechFord.com Page 24 of 32
QC Report for Work Order (WO) -22L0202
Analyte %Rec RPO Limits RPO Max Result Source Cone
Matrix Spike Cup -EPA 300.0 (cont.)
QC Sample ID: BWL0296-MSD1 Batch: BWL0296 QC Source Sample: XXXXXXX-XX
Date Prepared: 12/07/2022 Date Analyzed: 12/08/2022 Units:
Chloride 107 0.448 80 -120 20 189 81.5
QC Sample ID: BWL0296-MSD2 Batch: BWL0296 QC Source Sample: XXXXXXX-XX
Date Prepared: 12/07/2022 Date Analyzed: 12/08/2022 Units:
Chloride 79.3 0.255 80-120 20 465 386
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.
CtF WO#: 22L0202
www.ChemtechFord.com
mg/L
mg/L
SpkValue MRL OF
100 11 .0 1.00
100 11.0 1.00
Page 25 of 32
Analyte
QC Sample ID: BWL0249-BLK1
Date Prepared: 12/07/2022
Nitrate + Nitrite, Total, as N
QC Sample ID: BWL0249-BS1
Date Prepared: 12/07/2022
Nitrate + Nitrite, Total, as N
QC Sample ID: BWL0249-MS1
Date Prepared: 12/07/2022
Nitrate + Nitrite, Total, as N
QC Sample ID: BWL0249-MS2
Date Prepared: 12/07/2022
Nitrate + Nitrite, Total, as N
QC Sample ID: BWL0249-MSD1
Date Prepared: 12/07/2022
Nitrate + Nitrite, Total, as N
QC Sample ID: BWL0249-MSD2
Date Prepared: 12/07/2022
Nitrate + Nitrite, Total, as N
CtF WO#: 22L0202
www.ChemtechFord.com
QC Report for Work Order (WO) -22L0202
%Rec RPO Limits RPO Max Result Source Cone
Blank -EPA 353.2
Batch: BWL0249
Date Analyzed: 12/07/2022 Units: mg/L
ND
LCS -EPA 353.2
Batch: BWL0249
Date Analyzed: 12/07/2022 Units: mg/L
96.5 80-120 1.93
Matrix Spike -EPA 353.2
Batch: BWL0249 QC Source Sample: XXXXXXX-XX
Date Analyzed: 12/07/2022 Units: mg/L
98.3 80 -120 1.40 0.416
Batch: BWL0249 QC Source Sample: 22L0202-01
Date Analyzed: 12/07/2022 Units: mg/L
102 80 -120 2.50 1.47
Matrix Spike Dup -EPA 353.2
Batch: BWL0249 QC Source Sample: XXXXXXX-XX
Date Analyzed: 12/07/2022 Units: mg/L
100 1.35 80 -120 20 1.42 0.416
Batch: BWL0249 QC Source Sample: 22L0202-01
Date Analyzed: 12/07/2022 Units: mg/L
99.9 1.05 80 -120 20 2.47 1.47
SpkValue MRL OF
0.100 1.00
2.00 0.100 1.00
1.00 0.100 1.00
1.00 0.100 1.00
1.00 0.100 1.00
1.00 0.100 1.00
Page 26 of 32
TabH
Quality Assurance and Data Validation Tables
1-1 · Field QA/QC Evaluation
1x Casing 2x Casing
Location Volume Volume Pumped Volume Volume Check Conductivity RPO
PIEZ-01 okay 2456 NC
PIEZ-02 okay 974 NC
PIEZ-03A okay 1058 NC
TWN-01 23.36 55.00 46.72 okay 933 924 0.97
TWN-02 NA GonUnuously Pumped well -1942 NC
TWN-q3 36.95 4'.9.50 67.9 PumP.~'g Dcy 2a;i6 2357 Q.47
TWN-04 41.18 99.00 82.36 okay 1049 1050 0.10
TWN-07 17!,87 22.00 35.74 Pumpecl Dry 1948 1:949 0.05
TWN-18 54.85 121.00 109.7 okay 1300 1289 0.85
lWN-20 13,04· 13.75 26.08' Plllmped1E)ry 2962 3014 2.76
TWN-21 19."23, 27.50 38.46 Pumped !Dry 37'70 377!8 0.21
TW4-2.2 NA Continuously Pumped well -4899 NC
TW4-24 NA Continuously Pumped well .. 3941 NC
TW4-25 NA Continu6_usly Pumped well -2563 NC
TW4-22, TW4-24 TW4-24, TW4-25, TWN-02 are continually pumped wells.
TWN-03, TWN-07, TWN-20, l'WN-21 Wj ,~utliiii., ~ «:J ·, sampled after reoovery.
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
pH RPO Temperature RPO Redox RPO
7.05 NC 15.16 NC 343 NC
6.80 NC 15.35 NC 372 NC
6.90 NC 14.50 NC 380 NC
7.04 7.10 0.85 15.27 15.31 0.26 350 I 346 1.15
6.75 NC 14.58 NC 325 NC
6.71 6.70 0.15 13.50 13.55 o._37 NM NC
7.06 7.11 0.71 14.91 14.92 0.07 343 I 343 0.00
6.60 6.64 0.60 13.37 13.50 0.97 NM NC
6.80 6.80 0.00 14.51 14.52 0.07 344 I 343 0.29
6.82 6.90 1.17 14.9.(i) 14.25 4.46 NM NC
7.2-5 7.26 0.14 14.42 14.21 1.47 NM NC
6.12 NC 15.9"o NC 465 NC
6.49 NC 14.99 NC 468 NC
6.75 NC 15.00 NC 465 NC
The OAP 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.
Turbidity RPO Dissolved Oxygen RPO
4.6 NC 64.6 NC
38.0 NC 38.1 NC
5.3 NC 90.5 NC
2.7 I 2.8 3.64 40.0 I 42.0 4.88
0 NE: 89.0 NC
NM NC NM ~G,
1.0 I 1.1 9.52 64.0 I 63.0 1.57
NM NC NM NC
0 I 0 0.00 0.3 I 0.3 0.00
NM NC NM NG
NM NC NM NC
0 NC 20.5 NC
0 NC 19.4 NC
0 NC 32.0 NC
-o lnl 1me va uat10n H 2 H Id' T E I .
Allowed
Hold Time Hold Time Hold Time
Location ID Parameter Name Sample Date Analysis Date (Days) (Days) Check
PIEZ-01 Chloride 10/25/2022 11/16/2022 22 28 OK
PIEZ-01 Nitrate + Nitrite as N 10/25/2022 11/4/2022 IO 28 OK
PIEZ-02 Chloride 10/25/2022 10/28/2022 3 28 OK
PIEZ-02 Nitrate + Nitrite as N 10/25/2022 11/4/2022 IO 28 OK
PIEZ-03A Chloride 10/25/2022 11/16/2022 22 28 OK
PIEZ-03A Nitrate + Nitrite as N 10/25/2022 11/4/2022 IO 28 OK
TWN-01 Chloride 10/25/2022 10/28/2022 3 28 OK
TWN-01 Nitrate + Nitrite as N 10/25/2022 11/4/2022 IO 28 OK
TWN-02 Chloride 10/25/2022 10/28/2022 3 28 OK
TWN-02 Nitrate + Nitrite as N 10/25/2022 11/4/2022 IO 28 OK
TWN-03 Chloride 10/26/2022 10/28/2022 2 28 OK
TWN-03 Nitrate + Nitrite as N 10/26/2022 11/4/2022 9 28 OK
TWN-04 Chloride 10/25/2022 10/28/2022 3 28 OK
TWN-04 Nitrate + Nitrite as N 10/25/2022 11/4/2022 IO 28 OK
TWN-07 Chloride 10/26/2022 10/28/2022 2 28 OK
TWN-07 Nitrate + Nitrite as N 10/26/2022 11/4/2022 9 28 OK
TWN-18 Chloride 10/25/2022 10/28/2022 3 28 OK
TWN-18 Nitrate + Nitrite as N 10/25/2022 11/14/2022 20 28 OK
TWN-18R Chloride 10/25/2022 10/28/2022 3 28 OK
TWN-18R Nitrate + Nitrite as N 10/25/2022 11/14/2022 20 28 OK
TWN-20 Chloride 10/26/2022 10/28/2022 2 28 OK
TWN-20 Nitrate + Nitrite as N 10/26/2022 11/4/2022 9 28 OK
TWN-21 Chloride 10/26/2022 10/28/2022 2 28 OK
TWN-21 Nitrate + Nitrite as N 10/26/2022 11/4/2022 9 28 OK
TWN-60 Chloride 10/26/2022 10/31/2022 5 28 OK
TWN-60 Nitrate + Nitrite as N 10/26/2022 11/4/2022 9 28 OK
TWN-65 Chloride 10/26/2022 10/28/2022 2 28 OK
TWN-65 Nitrate + Nitrite as N 10/26/2022 11/4/2022 9 28 OK
TW4-22 Chloride 11/30/2022 12/8/2022 8 28 OK
TW4-22 Nitrate + Nitrite as N 11/30/2022 12/7/2022 7 28 OK
TW4-24 Chloride 11/30/2022 12/7/2022 7 28 OK
TW4-24 Nitrate + Nitrite as N 11/30/2022 12/7/2022 7 28 OK
TW4-25 Chloride 11/30/2022 12/5/2022 5 28 OK
TW4-25 Nitrate + Nitrite as N 11/30/2022 12/7/2022 7 28 OK
TW4-60 Chloride 11/30/2022 12/6/2022 6 28 OK
TW4-60 Nitrate + Nitrite as N 11/30/2022 12/7/2022 7 28 OK
H-3: Analytical Method Check
Parameter Method Meth·od Used by Lab
Nitrate E353.l or E353.2 E353.2
A4500-CI B or A4500-CI E
Chloride orE300.0 E300.0
Both Nitrate and Chloride were analyzed with the correct analytical method.
H4R -eportmg 1m1t ec L" . Ch k
Required
Lab Reporting Dilution Reporting RL
Location Analyte Limit Units Qualifier Factor Limit Check
PIEZ-01 Chloride 5 mg/L 1 l OK
PIEZ-01 Nitrate + Nitrite as N 0.5 mg/L 2 0.1 OK
PIEZ-02 Chloride 5 m.g/L 1 l OK
PIEZ-02 Nitrate + Nitrite as N 0.1 mg/L 1 0.1 OK
PIEZ-03A Chloride 5 mg/L 5 l OK
PIEZ-03A Nitrate + Nitrite as N 0.5 mg/L 5 0.1 OK
TWN-01 Chloride 5 mg/L 1 l OK
TWN-01 Nitrate + Nitrite as N 0.1 mg/L 1 0.1 OK
TWN-02 Chloride 5 mg/L 5 l OK
TWN-02 Nitrate + Nitrite as N 0.5 mg/L 5 0.1 OK
TWN-03 Chloride IO mg/L 2 l OK
TWN-03 Nitrate + Nitrite as N 2 mg/L 10 0.1 OK
TWN-04 Chloride 5 mg/L 1 l OK
TWN-04 Nitrate + Nitrite as N 0.1 mg/L 1 0.1 OK
TWN-07 Chloride 5 mg/L 2 l OK
TWN-07 Nitrate + Nitrite as N 0.5 mg/L 5 0.1 OK
TWN-18 Chloride 1 mg/L 5 l OK
TWN-18 Nitrate + Nitrite as N 0.1 mg/L 1 0.1 OK
TWN-18R Chloride l mg/L u 1 1 OK
TWN-18R Nitrate + Nitrite as N 0.1 mg/L u 1 0.1 OK
TWN-20 Chloride 5 mg/L 2 1 OK
TWN-20 Nitrate + Nitrite as N 0.1 mg/L 1 0.1 OK
TWN-21 Chloride 5 mg/L 2 1 OK
TWN-21 Nitrate + Nitrite as N 0.1 mg/L 1 0.1 OK
TWN-60 Chloride 1 mg/L u 1 1 OK
TWN-60 Nitrate + Nitrite as N 0.1 mg/L u 1 0.1 OK
TWN-65 Chloride 5 mg/L 2 1 OK
TWN-65 Nitrate + Nitrite as N 0.1 mg/L 1 0.1 OK
TW4-22 Chloride 10 mg/L 10 1 OK
TW4-22 Nitrate + Nitrite as N 2 mg/L 20 0.1 OK
TW4-24 Chloride 100 mg/L 20 l OK
TW4-24 Nitrate + Nitrite as N 1 mg/L 10 0.1 OK
TW4-25 Chloride 1 mg/L 1 1 OK
TW4-25 Nitrate + Nitrite as N 0.1 mg/L 1 0.1 OK
TW4-60 Chloride 1 mg/L u 1 l OK
TW4-60 Nitrate + Nitrite as N 0.1 mg/L u 1 0.1 OK
H-5 QA/QC Evaluation for Sample Duplicates
Constituent TWN-20 TWN-6S %RFD
Chloride 32.0 32.0 0.00
Nitrogen 0.446 0.405 9.64
H-6 QC Control Limits for Analysis and Blanks
Method Blank Detections
All Method Blanks for the quarter were non-detect.
Matri>c._Soike % Recovery C -------
Lab Reoort Lab Sample ID Well Analyte MS %REC
2212146 BWJ1405-MS2 NIA Chloride* NC
2212146 BWJ1451-MS1 NIA Chloride 69.3
2212146 BWJ1451-MS2 NIA Chloride* NC
22L0202 BWL0152-MS1 TW4-25 Chloride* NC
22L0202 BWL0296-MS2 NIA Chloride 80.4
* -Recovery was not calculated because the analyte of the sample was greater than 4 times the spike amount
NIA-QC was not performed on an EFRI sample.
NC -Not calculated
Laboratory Control Sample
All Laboratory Control Samples were within acceptance limits for the quarter.
REC
MSD%REC Range RPD
NC 80-120 NC
82.9 80-120 7.25
NC 80-120 NC
NC 80-120 NC
79.3 80-120 0.255
H-7 Receipt Temperature Evaluation
Sample Batch Wells in -Satch Tem_perature
2212146 PIEZ-01, PIEZ-02, PIEZ-03A, TWN-1, TWN-2, TWN-3, TWN-4, 0.l°C TWN-7, TWN-18, TWN-18R, TWN-20, TWN-21, TWN-60, TWN-65
22L0202 TW4-22, TW4-24, TW4-25, TW4-60 -l.2°C
H-8 Rinsate Evaluation
All rinsate and DI blank samples were non-detect for the quarter.
Tab I
Kriged Current Quarter Isoconcentration Maps
d1
MW,21
o.s~ • 'MW13A:
.:.--i -.,-.....
., • MW-H
ND .,
MW':0'1
iban'iloned ·o,
1WN-05
NO • fi'IW-18
0.2 .. TWfM8
NS
0
1 b.(n!focll!d 'O • TWN-15
aban!Sonod
. ,0 TV:/(11•10
ab,m,!om,d
iwN-~1
NS " 1WN-f4
abllfl<lbned 6 ....
TWNJ-0.B
lWl\l-06 ¢'i \
~I~~
l)Wnjlon,xl ,.,
,WNcO, 2., • MW•tf
1"'}_8 ,,
.,~ 0
,2"1 TWN-01 / Pl
\21Cl H
_,..._ ~-6 4-.11
~
. r
l,°~,.llW_Jr -· ~i~~s n,,,_,,,-,,, ,..,,_
4-10 ,. ~ .. 4-3.8
. 'd.Gl 7lW'-Ol_%a,1 oU ,w~12
v-J'2e• 1 ao 9/i~§. °'·l:\. I I ~f1't~<A\\ ,W,e ~32
/~*f/ .. ~.4:11 ,, ,_ ~4-13
~8 ~-~ i,,. 4.()2, .9
, ..;~W-04 ND
_ TW4~.f~8 C,W~e N.o ~-in .
MW-32:~ , 8
,. ' -~ ....W4"0/I~-~-4-4~!
Ill!) <i MW'39
-6.~ , .. 4-1••·
• TW-4.ocrt, 3.50~z7,1W4-31
• TW4.J31,.~I 00.41 TW~,r-Jw~~-, !M~• .&a
,., ,, , TWo •• • 4,43 :n.u4-40• 1 _""' ,...., .... ''22 -~~
1w.··· TW~
2~1
MW-40
NS
TWN\'1
.abani ~1100
TWN,12 tl_S'
TW~.Jl9
---,J ....
,I '
EXPLANATION
-
7.1
r;1w.20
NS = not sampled; ND = not detected
...._10
TW4-43
~0.38
TWN-21
C1 1.1
TW4-42
◊3.3
MW-38
-¢-1 !:i
MW-32
e ND
TW4-7
0 4.1
TWN-1
0 2.s
PIEZ-1
g 6.4
kriged nitrate isocon and label
temporary perched monitoring well
Installed September, 2021 showing
concentration In mg/L
temporary perched monitoring well
installed April, 2021 showing
concentration in mg/L
temporary perched monitoring well
installed April, 2019 showing
concentration in mg/L
perched monitoring well
installed February, 2018 showing
concentration in mg/L
perched monitoring well showing
concentration in mg/L
temporary perched monitoring well
showing concentration in mg/L
temporary perched nitrate monitoring
well showing concentration in mg/L
perched piezometer (not sampled)
' \
\
I
I
I
I
I
-~ -·-T -• -rtt / Q.111 • 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 installe.d December, 2019
HYDRO
GEO
CHEM,INC.
KRIGED 4th QUARTER, 2022 NITRATE (mg/L)
WHITE MESA SITE
APPROVED DATE REFERENCE
H:n18000/feb23/nitrate/Unt1222.srf
FIGURE
1-1
dry • MW-21
EXeLANATION
61 • MW-20
56 • MW-3A
NS= not sampled; ND= not detected
......_ 100 kriged chloride isocon and label
TW4-43
~41
TWN-21
[]42
TW4-42
¢16
MW-38 ◊40
MW-32
.37
TW4-7
0 45
TWN-1 ◊30
PIEZ-1
'-74
temporary perched monitoring
well installed September, 2021
showing concentration in mg/L
temporary perched monitoring well
installed April, 2021 showing
concentration in mg/L
temporary perched monitoring well
installed April, 2019 showing
concentration in mg/L
perched monitoring well
installed February, 2018 showing
concentration in mg/L
perched monitoring well showing
concentration in mg/L
temporary perched monitoring well
showing concentration in mg/L
temporary perched nitrate monitoring
well showing concentration in mg/L
perched piezometer (not sampled)
54 • MW-17
40 • MW-38
17 • MW-01
abandoned
0 TWN-05
37 ..
43 • MW-18
36
37 • MW-32.•
abandoned
0 TWN-15
abandoned 0
TWN-10
abandoned 0 TWN-11
NS
0 TWN-14
abandoned 0
NS
0 TWN-06
TWN-09
74
PIEZ-01
abandoned
0 TWN-08 39 • MW-19
'112
PIEZ~A F
4-18
oTWo\-05
'052 .... 9.o rx;fa TW4-12
33 049
o.tt ~052 TW4--32 lW4-0~ TW4-28· ~•a
·•·• TW4-13
'4'42 057 w.o, 60 ~l.oa °rw4-36
1 3a T.W4-040 tTW4-41 44
30 ')iw4-1.4
f TW4-0 46 0 ,TW4-271(W4-31
4-33 ,i 0 ~2 --~ TW4460 » .,,
,TW4-4Ch
TW4-,42/s
1'w•s2ir ~4-391
0, "iw4-43 170 M4-36','' lW4-34
50 • MW-40
MW-39
rtJ
1 mile
6 • MW-22
NS 0
TWN-16
abandoned 0 TWN-12
abandoned
0 TWN-17
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
GEO
CHEM, INC.
KRIGED 4th QUARTER, 2022 CHLORIDE (mg/L)
WHITE MESA SITE
APPROVED DATE REFERENCE
H:/718000/feb23/chloride/Ucl1222.srf
FIGURE
1-2
TabJ
Analyte Concentrations over Time
Piezometer 1
Date Nitrate (mg/I) Chloride (mg/I)
2/19/2009 6.8 NA
7/14/2009 6.8 60.0
9/22/2009 7.3 78.0
10/27/2009 7.4 61.0
6/2/2010 7.2 52.0
7/19/2010 6.8 52.0
12/10/2010 6.5 60.0
1/31/2011 7 60.0
4/25/2011 6.8 58.0
7/25/2011 7 53.0
10/19/2011 6.6 55.0
1/11/2012 7.1 78.0
4/20/2012 6.6 58.0
7/27/2012 7.2 56.0
10/17/2012 7.66 55.0
2/18/2013 8.11 56.7
4/24/2013 8.88 53.3
8/28/2013 7.83 55.1
10/16/2013 6.68 54.1
1/13/2014 6.79 56.2
5/7/2014 7.57 52.1
8/6/2014 5.1 55.0
10/8/2014 5.75 57.6
2/18/2015 6.41 55.9
5/12/2015 5.95 57.5
8/26/2015 4.96 64.2
10/14/2015 6.17 54.4
2/23/2016 8.31 56.5
5/17/2016 6.33 59.1
7/19/2016 6.78 53.9
10/11/2016 6.42 58.1
2/15/2017 6.75 54.5
6/1/2017 6.60 54.7
7/20/2017 6.80 58.0
10/4/2017 6.21 54.4
1/17/2018 6.35 55.3
5/9/2018 6.56 58.0
8/8/2018 6.66 63.5
11/20/2018 6.70 55.5
2/19/2019 6.72 56.8
5/30/2019 6.75 59.4
8/14/2019 6.81 61.1
10/16/2019 7.21 59.3
1/30/2020 7.12 68.9
Piezometer 1
Date Nitrate (mg/I) Chloride (mg/I)
5/20/2020 6.95 67.7
7/15/2020 7.36 63.6
11/13/2020 7.51 63.9
2/18/2021 7.34 57.5
5/27/2021 7.89 69.9
8/19/2021 7.60 70.0
11/23/2021 4.69 65.5
2/16/2022 7.40 68.8
5/24/2022 5.90 70.3
8/17/2022 6.37 72.0
10/25/2022 6.36 73.6
Piezometer 2
Date Nitrate (mg/I) Chloride (mg/I)
2/19/2009 0.500 NA
7/14/2009 0.500 7.0
9/22/2009 0.500 17.0
10/27/2009 0.600 7.0
6/2/2010 0.600 8.0
7/19/2010 0.600 8.0
12/10/2010 0.200 6.0
1/31/2011 0.300 9.0
4/25/2011 0.300 8.0
7/25/2011 0.100 9.0
10/19/2011 0.100 8.0
1/11/2012 0.100 9.0
4/20/2012 0.200 8.0
7/27/2012 0.200 9.0
10/17/2012 0.192 9.5
2/19/2013 0.218 9.7
4/24/2013 0.172 10.3
8/28/2013 0.198 9.7
10/16/2013 0.364 9.2
1/13/2014 0.169 11.4
5/7/2014 0.736 11.4
8/6/2014 0.800 12.0
10/8/2014 0.755 12.2
2/18/2015 0.749 12.6
5/12/2015 0.646 13.1
8/26/2015 0.662 15.5
10/14/2015 0.692 13.3
2/23/2016 0.615 13.4
5/17/2016 0.665 14.0
7/19/2016 0.669 12.4
10/11/2016 0.732 13.4
2/15/2017 0.696 12.4
6/1/2017 0.345 13.2
7/20/2017 0.555 13.4
10/4/2017 0.684 12.7
1/17/2018 0.716 13.0
5/9/2018 0.776 14.0
8/8/2018 0.818 15.1
11/20/2018 0.648 12.3
2/19/2019 0.599 12.9
5/30/2019 0.702 12.6
8/14/2019 0.606 13.2
10/16/2019 0.573 12.6
1/30/2020 0.740 14.2
Piezometer 2
Date Nitrate (mg/I) Chloride (mg/I)
5/20/2020 0.679 14.4
7/15/2020 0.793 12.7
11/13/2020 0.544 12.9
2/18/2021 0.401 15.7
5/27/2021 0.100 13.9
8/19/2021 0.110 14.6
11/23/2021 <0.100 14.8
2/16/2022 0.330 14.0
5/24/2022 0.480 12.6
8/17/2022 0.706 14.7
10/25/2022 0.703 13.4
Piezometer 3A
Date Nitrate (mg/I) Chloride (mg/I)
5/17/2016 8.23 109
7/19/2016 8.83 93.8
10/11/2016 8.44 100
2/15/2017 10.00 111
6/1/2017 10.10 124
7/20/2017 9.31 105
10/4/2017 9.65 107
1/17/2018 8.61 94.3
5/9/2018 8.98 100
8/8/2018 12.1 122
11/20/2018 11.8 105
2/19/2019 11.8 102
5/30/2019 11.8 104
8/14/2019 10.7 96.2
10/16/2019 8.97 83.0
1/30/2020 10.5 99.5
5/20/2020 12.4 88.3
7/15/2020 12.8 82.7
11/13/2020 13.0 72.8
2/18/2021 11.1 85.9
5/27/2021 14.4 85.2
8/19/2021 11.2 81.5
11/23/2021 9.1 84.6
2/16/2022 12.1 91.7
5/24/2022 8.8 114
8/17/2022 10.6 109
10/25/2022 11.5 81.5
TWN-1
Date Nitrate (mg/I) Chloride (mg/I)
2/6/2009 0.7 19
7/21/2009 0.4 17
9/21/2009 0.4 19
10/28/2009 0.5 18
3/17/2010 0.5 17
5/26/2010 0.6 20
9/27/2010 0.6 19
12/7/2010 0.6 14
1/26/2011 0.5 17
4/20/2011 0.5 19
7/26/2011 0.5 14
10/17/2011 0.5 10
1/9/2012 0.6 15
4/18/2012 0.6 17
7/24/2012 0.6 17
10/15/2012 0.432 17.5
2/18/2013 0.681 17.6
4/23/2013 0.84 17.4
8/27/2013 1.24 24.1
10/16/2013 1.61 26.8
1/14/2014 1.47 29.2
5/6/2014 1.63 31.1
8/5/2014 1.7 28
10/8/2014 1.46 27.6
2/18/2015 1.37 27.8
5/13/2015 0.65 29.2
8/25/2015 0.324 33.2
10/13/2015 1.35 27.7
2/23/2016 1.51 30.3
5/17/2016 1.73 32.1
7/20/2016 1.76 29.6
10/6/2016 1.98 33.0
2/15/2017 2.06 31.2
6/1/2017 1.89 32.7
7/19/2017 2.07 31.2
10/4/2017 1.95 32.0
1/18/2018 1.86 30.4
5/8/2018 2.06 28.4
8/8/2018 1.97 34.2
11/20/2018 1.98 28.9
2/20/2019 2.10 31.4
5/29/2019 1.93 32.6
8/14/2019 2.15 30.3
10/16/2019 2.35 32.0
1/29/2020 2.24 33.8
TWN-1
Date Nitrate (mg/I) Chloride (mg/I)
5/20/2020 2.24 33.0
7/15/2020 2.36 30.8
11/12/2020 1.89 29.2
2/17/2021 2.53 34.1
5/25/2021 3.18 34.7
8/18/2021 2.47 35.7
11/23/2021 1.91 37.4
2/15/2022 3.01 35.6
5/24/2022 2.1 33.7
8/17/2022 2.94 36.7
10/25/2022 2.75 30.1
TWN-2
Date Nitrate (mg/I) Chloride (mg/I)
2/6/2009 25.4 29
7/21/2009 25 25
9/21/2009 22.6 17
11/2/2009 20.8 55
3/24/2010 62.1 85
6/2/2010 69 97
9/29/2010 69 104
12/9/2010 48 93
2/1/2011 43 93
4/28/2011 40 85
7/28/2011 33 74
10/20/2011 33 76
1/12/2012 31 86
4/20/2012 48 103
7/31/2012 54 93
10/17/2012 22.1 79
2/19/2013 57.3 80.5
4/24/2013 57.7 82.1
8/27/2013 80 75.9
10/16/2013 111 70.4
1/13/2014 42.6 72.4
5/7/2014 44.7 84.9
8/6/2014 42 80
10/8/2014 70.6 81
2/18/2015 48.6 84.8
5/12/2015 52.8 82.6
8/25/2015 49.7 87.8
10/14/2015 44.9 74.9
2/23/2016 86.3 73.9
5/17/2016 45.4 74.5
7/19/2016 35.3 68.8
10/11/2016 32.6 69.8
2/15/2017 27.4 65.8
6/1/2017 25.0 61.5
7/20/2017 23.9 64.2
10/4/2017 31.9 60.5
1/19/2018 19.6 57.1
5/9/2018 19.8 62.3
8/8/2018 18.6 61.5
11/20/2018 19.6 56.0
2/19/2019 19.0 50.7
5/29/2019 45.1 102
8/14/2019 23.2 50.7
10/16/2019 18.2 53.0
1/29/2020 16.5 66.1
TWN-2
Date Nitrate (mg/I) Chloride (mg/I)
5/20/2020 16.1 59.6
7/15/2020 17.2 55.6
11/12/2020 12.00 53.5
2/18/2021 15.4 61.8
5/25/2021 13.8 61.5
8/18/2021 15.3 58.9
11/23/2021 12.7 62.3
2/15/2022 15.3 59.5
5/24/2022 14 60.2
8/17/2022 13.9 61.8
10/25/2022 14.0 48.9
TWN-3
Date Nitrate (mg/I) Chloride (mg/I)
2/6/2009 23.6 96
7/21/2009 25.3 96
9/21/2009 27.1 99
11/2/2009 29 106
3/25/2010 25.3 111
6/3/2010 26 118
7/15/2010 27 106
12/10/2010 24 117
2/1/2011 24 138
4/28/2011 26 128
7/29/2011 25 134
10/20/2011 25 129
1/12/2012 25 143
4/20/2012 24 152
7/31/2012 27 158
10/17/2012 12.1 149
2/19/2013 22.2 157
4/24/2013 27.2 158
8/28/2013 20.9 171
10/17/2013 23.5 163
1/15/2014 19.6 160
5/7/2014 23.6 168
8/6/2014 19.5 174
10/9/2014 19.1 153
2/19/2015 19.4 164
5/14/2015 17.2 141
8/26/2015 16.2 156
10/14/2015 16.3 129
2/24/2016 16.8 128
5/18/2016 13.5 116
7/19/2016 16.8 110
10/7/2016 15.8 113
2/16/2017 17.4 113
6/2/2017 15.9 108
7/20/2017 15.9 106
10/5/2017 15.6 111
1/19/2018 14.4 107
5/9/2018 16.4 115
8/9/2018 19.4 149
11/21/2018 20.1 123
2/21/2019 20.7 140
5/30/2019 18.7 137
8/15/2019 19.8 133
10/17/2019 19.6 126
1/30/2020 19.4 156
TWN-3
Date Nitrate (mg/I) Chloride (mg/I)
5/21/2020 24.0 136
7/16/2020 22.2 130
11/13/2020 18.00 137
2/18/2021 23.8 145
5/27/2021 25.0 156
8/19/2021 24.3 146
11/24/2021 17.4 147
2/16/2022 25.3 140
5/25/2022 24.0 157
8/18/2022 28.2 163
10/26/2022 26.0 156
TWN-4
Date Nitrate (mg/I) Chloride (mg/I)
2/6/2009 1.00 13.0
7/21/2009 0.05 12.0
9/21/2009 0.40 13.0
10/28/2009 0.40 11.0
3/16/2010 0.90 22.0
5/27/2010 1.00 22.0
9/27/2010 0.90 19.0
12/8/2010 1.00 21.0
1/25/2011 0.90 21.0
4/20/2011 0.90 21.0
7/26/2011 1.10 35.0
10/18/2011 0.90 20.0
1/9/2012 0.90 20.0
4/18/2012 1.10 24.0
7/25/2012 1.40 25.0
10/15/2012 1.45 26.4
2/18/2013 1.51 25.3
4/23/2013 1.63 24.4
8/27/2013 1.58 27.2
10/16/2013 1.69 29.4
1/14/2014 1.41 28.4
5/6/2014 1.55 29.6
8/5/2014 2.00 28.0
10/8/2014 1.44 30.7
2/18/2015 1.48 31.5
5/13/2015 0.73 31.9
8/25/2015 0.97 35.2
10/13/2015 1.58 28.4
2/23/2016 2.02 30.7
5/17/2016 2.97 31.7
7/20/2016 3.14 28.0
10/6/2016 3.09 31.3
2/15/2017 2.63 31.2
6/1/2017 2.37 28.6
7/19/2017 2.35 28.0
10/4/2017 2.27 27.4
1/18/2018 1.77 26.3
5/8/2018 1.86 27.7
8/8/2018 1.54 28.0
11/20/2018 1.48 22.7
2/20/2019 1.53 25.3
5/29/2019 1.51 26.5
8/14/2019 1.81 23.7
10/16/2019 2.15 25.4
1/29/2020 1.89 27.2
TWN-4
Date Nitrate (mg/I) Chloride (mg/I)
5/20/2020 1.75 25.1
7/15/2020 1.75 23.1
11/12/2020 1.18 22.8
2/17/2021 1.64 24.2
5/25/2021 1.70 23.2
8/18/2021 1.28 23.7
11/23/2021 1.27 23.2
2/15/2022 1.50 22.7
5/24/2022 1.20 20.9
8/17/2022 1.39 21.6
10/25/2022 1.31 21.2
TWN-7
Date Nitrate (mg/I) Chloride (mg/I)
8/25/2009 ND 11.00
9/21/2009 ND 7.00
11/10/2009 0.10 7.00
3/17/2010 0.800 6.00
5/28/2010 1.200 6.00
7/14/2010 1.600 7.00
12/10/2010 1.000 4.00
1/27/2011 1.300 6.00
4/21/2011 1.700 6.00
7/29/2011 0.700 5.00
10/19/2011 2.200 6.00
1/11/2012 2.300 5.00
4/20/2012 1.200 6.00
7/26/2012 0.900 6.00
10/16/2012 0.641 5.67
2/19/2013 0.591 5.68
4/24/2013 1.160 5.88
8/28/2013 0.835 6.96
10/16/2013 0.986 5.70
1/15/2014 0.882 5.75
5/7/2014 0.564 5.26
8/6/2014 0.900 6.00
10/9/2014 0.968 5.93
2/19/2015 1.040 5.58
5/14/2015 0.779 6.18
8/26/2015 0.348 6.12
10/14/2015 0.672 5.84
2/24/2016 0.240 6.06
5/18/2016 0.732 6.26
7/21/2016 0.810 5.97
10/7/2016 0.698 6.17
2/16/2017 1.63 14.00
6/2/2017 3.74 29.70
7/20/2017 2.70 29.00
10/5/2017 3.58 41.40
1/19/2018 5.82 69.40
5/9/2018 10.2 94.70
8/9/2018 10.6 105
11/21/2018 11.5 104
2/21/2019 12.9 107
5/30/2019 13.5 122
8/15/2019 12.9 120
10/17/2019 14.2 119
1/30/2020 14.2 128
5/21/2020 14.6 126
TWN-7
Date Nitrate (mg/I) Chloride (mg/I)
7/16/2020 15.2 116
11/13/2020 11.8 121
2/18/2021 16.0 129
5/27/2021 16.4 129
8/19/2021 15.1 121
11/24/2021 7.7 130
2/16/2022 16.9 120
5/25/2022 16.0 127
8/18/222 14.6 128
10/26/2022 15.7 129
TWN-18
Date Nitrate (mg/I) Chloride (mg/I)
11/2/2009 1.300 57.0
3/17/2010 1.600 42.0
6/1/2010 1.800 63.0
9/27/2010 1.800 64.0
12/9/2010 1.600 59.0
1/27/2011 1.400 61.0
4/26/2011 1.800 67.0
7/28/2011 1.800 65.0
10/18/2011 1.900 60.0
1/10/2012 1.900 64.0
4/19/2012 2.100 64.0
7/26/2012 2.300 67.0
10/16/2012 1.950 67.5
2/18/2013 2.270 68.7
4/23/2013 2.320 64.3
8/27/2013 2.040 70.4
10/16/2013 2.150 67.3
1/14/2014 2.330 68.4
5/6/2014 2.180 76.5
8/5/2014 1.800 70.0
10/8/2014 1.470 74.8
2/18/2015 1.000 73.3
5/13/2015 1.350 76.6
8/25/2015 0.350 81.3
10/13/2015 0.668 69.0
2/23/2016 0.648 67.6
5/17/2016 0.497 69.9
7/20/2016 0.100 52.7
10/6/2016 0.501 67.4
2/15/2017 0.470 62.1
6/1/2017 0.392 63.9
7/19/2017 0.419 59.0
10/4/2017 0.256 56.6
1/18/2018 0.332 53.1
5/8/2018 0.283 57.8
8/8/2018 0.348 59.7
11/20/2018 0.160 48.1
2/20/2019 0.155 46.4
5/29/2019 0.129 50.0
8/14/2019 0.181 46.9
10/16/2019 0.162 47.1
1/29/2020 0.224 51.9
5/20/2020 0.236 47.4
7/15/2020 0.232 44.0
11/12/2020 0.208 42.3
TWN-18
Date Nitrate (mg/I) Chloride (mg/I)
2/17/2021 0.228 46.2
5/25/2021 0.220 44.9
8/17/2021 0.199 42.9
11/23/2021 0.245 46.5
2/15/2022 0.199 40.9
5/25/2022 0.340 40.7
8/17/2022 0.328 40.8
10/25/2022 0.212 35.6
TWN-20
Date Nitrate (mg/I) Chloride (mg/I)
6/3/2021 1.88 50.0
8/19/2021 0.96 35.3
11/24/2021 0.286 33.6
2/16/2022 0.436 31.2
5/25/2022 0.54 29.7
8/18/2022 0.481 32.4
10/26/2022 0.446 32.0
TWN-21
Date Nitrate (mg/I) Chloride (mg/I)
6/3/2021 1.03 41.9
8/19/2021 1.16 40.5
11/24/2021 0.696 42.6
2/16/2022 1.10 40.4
5/25/2022 1.1 39.8
8/18/2022 1.19 42.7
10/26/2022 1.08 42.3
TW4-19
Date Nitrate (mg/I) Date Chloride (mg/I)
7/22/2002 42.80 12/7/2005 81
9/12/2002 47.60 3/9/2006 86
3/28/2003 61.40 7/20/2006 123
6/23/2003 11.40 11/9/2006 134
7/15/2003 6.80 2/28/2007 133
8/15/2003 4.00 8/15/2007 129
9/12/2003 5.70 10/10/2007 132
9/25/2003 9.20 3/26/2008 131
10/29/2003 7.70 6/25/2008 128
11/9/2003 4.80 9/10/2008 113
8/16/2004 9.91 10/15/2008 124
9/17/2004 4.50 3/4/2009 127
3/16/2005 5.30 6/23/2009 132
6/7/2005 5.70 9/14/2009 43
8/31/2005 4.60 12/14/2009 124
12/1/2005 0.10 2/17/2010 144
3/9/2006 4.00 6/9/2010 132
6/14/2006 5.20 8/16/2010 142
7/20/2006 4.30 10/11/2010 146
11/9/2006 4.60 2/17/2011 135
2/28/2007 4.00 6/7/2011 148
8/15/2007 4.10 8/17/2011 148
10/10/2007 4.00 11/17/2011 148
3/26/2008 2.20 1/23/2012 138
6/25/2008 2.81 6/6/2012 149
9/10/2008 36.20 9/5/2012 149
10/15/2008 47.80 10/3/2012 150
3/4/2009 3.20 2/11/2013 164
6/23/2009 2.40 6/5/2013 148
9/14/2009 0.10 9/3/2013 179
12/14/2009 26.70 10/29/2013 206
2/17/2010 2.00 1/27/2014 134
6/9/2010 4.40 5/19/2014 152
8/16/2010 5.90 8/11/2014 140
10/11/2010 2.70 10/21/2014 130
2/17/2011 17.00 3/9/2015 238
6/7/2011 12.00 6/8/2015 180
8/17/2011 3.00 8/31/2015 326
11/17/2011 5.00 10/19/2015 252
1/23/2012 0.60 3/9/2016 276
6/6/2012 2.40 5/23/2016 201
9/5/2012 2.50 7/25/2016 214
10/3/2012 4.10 10/13/2016 200
2/11/2013 7.99 3/8/2017 461
6/5/2013 2.95 6/13/2017 135
TW4-19
Date Nitrate (mg/I) Date Chloride (mg/I)
9/3/2013 17.60 7/26/2017 218
10/29/2013 4.70 10/11/2017 139
1/27/2014 1.62 3/12/2018 193
5/19/2014 1.34 6/8/2018 138
8/11/2014 1.60 8/22/2018 166
10/21/2014 4.72 11/28/2018 140
3/9/2015 8.56 3/8/2019 197
6/8/2015 0.92 6/5/2019 160
8/31/2015 11.60 9/4/2019 153
10/19/2015 10.60 12/10/2019 147
3/9/2016 15.70 2/19/2020 205
5/23/2016 1.27 5/27/2020 147
7/25/2016 10.50 9/4/2020 188
10/13/2016 10.00 10/28/2020 104
3/8/2017 11.10 2/23/2021 167
6/13/2017 0.243 6/9/2021 115
7/26/2017 1.12 8/24/2021 172
10/11/2017 0.377 12/1/2021 184
3/12/2018 8.61 3/9/2022 119
6/8/2018 0.494 6/8/2022 128
8/22/2018 2.55 8/30/2022 178
11/28/2018 0.233 11/30/2022 129
3/8/2019 6.58
6/5/2019 8.96
9/4/2019 0.332
12/10/2019 0.535
2/19/2020 10.10
5/27/2020 1.14
9/4/2020 11.60
10/28/2020 1.10
2/23/2021 6.61
6/9/2021 4.04
8/24/2021 6.68
12/1/2021 11.0
3/9/2022 1.70
6/8/2022 1.40
8/30/2022 4.76
11/30/2022 3.58
The sampling program for TW4-19 was updated in the fourth quarter of 2005
to include analysis for chloride as well as nitrate. This change accounts for the
different number of data points represented above.
TW4-21
Date Nitrate (mg/I) Date Chloride (mg/I)
5/25/2005 14.6 12/7/2005 353
8/31/2005 10.1 3/9/2006 347
11/30/2005 9.6 7/20/2006 357
3/9/2006 8.5 11/8/2006 296
6/14/2006 10.2 2/28/2007 306
7/20/2006 8.9 6/27/2007 327
11/8/2006 8.7 8/15/2007 300
2/28/2007 8.7 10/10/2007 288
6/27/2007 8.6 3/26/2008 331
8/15/2007 8.6 6/25/2008 271
10/10/2007 8.3 9/10/2008 244
3/26/2008 14.3 10/15/2008 284
6/25/2008 8.8 3/11/2009 279
9/10/2008 7.6 6/24/2009 291
10/15/2008 8.0 9/15/2009 281
3/11/2009 8.3 12/22/2009 256
6/24/2009 8.1 2/25/2010 228
9/15/2009 9.2 6/10/2010 266
12/22/2009 8.4 8/12/2010 278
2/25/2010 8.4 10/13/2010 210
6/10/2010 12.0 2/22/2011 303
8/12/2010 14.0 6/1/2011 297
10/13/2010 7.0 8/17/2011 287
2/22/2011 9.0 11/16/2011 276
6/1/2011 13.0 1/19/2012 228
8/17/2011 14.0 6/13/2012 285
11/16/2011 13.0 9/13/2012 142
1/19/2012 15.0 10/4/2012 270
6/13/2012 11.0 2/13/2013 221
9/13/2012 13.0 6/18/2013 243
10/4/2012 14.0 9/12/2013 207
2/13/2013 11.8 11/13/2013 206
6/18/2013 13.8 2/5/2014 200
9/12/2013 10.3 5/22/2014 243
11/13/2013 9.0 8/27/2014 230
2/5/2014 11.4 10/29/2014 252
5/22/2014 11.5 3/12/2015 255
8/27/2014 7.1 6/8/2015 494
10/29/2014 10.0 8/31/2015 499
TW4-21
Date Nitrate (mg/I) Date Chloride (mg/I)
3/12/2015 10.9 10/19/2015 413
6/8/2015 13.1 3/9/2016 452
8/31/2015 14.7 5/23/2016 425
10/19/2015 14.3 7/25/2016 457
3/9/2016 14.6 10/12/2016 439
5/23/2016 13.1 3/8/2017 478
7/25/2016 16.5 6/13/2017 309
10/12/2016 13.5 7/26/2017 447
3/8/2017 17.7 10/11/2017 378
6/13/2017 9.5 3/12/2018 447
7/26/2017 18.2 6/8/2018 387
10/11/2017 16.9 8/22/2018 182
3/12/2018 15.8 10/22/2018 392
6/8/2018 14.1 3/8/2019 180
8/22/2018 0.236 6/5/2019 456
10/22/2018 15.2 9/4/2019 478
3/8/2019 8.99 12/10/2019 339
6/5/2019 17.5 2/19/2020 446
9/4/2019 14.7 5/27/2020 353
12/10/2019 5.73 9/4/2020 382
2/19/2020 8.93 10/28/2020 411
5/27/2020 15.4 2/23/2021 454
9/4/2020 12.6 6/9/2021 461
10/28/2020 16.3 8/24/2021 375
2/23/2021 15.2 12/1/2021 227
6/9/2021 21.5 3/9/2022 110
8/24/2021 12.9 6/8/2022 331
12/1/2021 17.2 8/30/2022 425
3/9/2022 2.2 11/30/2022 158
6/8/2022 8.9
8/30/2022 14.3
11/30/2022 2.1
The sampling program for TW4-21 was updated in the fourth quarter of 2005
to include analysis for chloride as well as nitrate. This change accounts for the
different number of data points represented above.
TW4-22
Date Nitrate (mg/I) Chloride (mg/I)
2/28/2007 20.9 347
6/27/2007 19.3 273
8/15/2007 19.3 259
10/10/2007 18.8 238
3/26/2008 39.1 519
6/25/2008 41.9 271
9/10/2008 38.7 524
10/15/2008 36.3 539
3/11/2009 20.7 177
6/24/2009 20.6 177
9/15/2009 40.3 391
12/29/2009 17.8 175
3/3/2010 36.6 427
6/15/2010 19 134
8/12/2010 18 127
8/24/2010 15 130
10/13/2010 16 134
2/23/2011 18 114
6/1/2011 17 138
8/17/2011 15 120
11/16/2011 19 174
1/19/2012 14 36
6/13/2012 12.8 35
9/12/2012 7 121
10/4/2012 14 130
2/11/2013 58 635
6/5/2013 50.2 586
9/3/2013 29.7 487
10/29/2013 45.2 501
1/27/2014 54.6 598
5/19/2014 47.2 614
8/11/2014 41.5 540
10/21/2014 54.9 596
3/9/2015 69.2 675
6/8/2015 47.1 390
8/31/2015 64.7 557
10/19/2015 56.1 567
3/9/2016 31.1 583
5/23/2016 58.4 598
7/25/2016 61.3 619
10/12/2016 61.5 588
3/8/2017 69.8 566
6/13/2017 70.8 572
7/26/2017 66.1 391
10/11/2017 80.1 600
3/12/2018 62.3 607
6/8/2018 72.5 580
TW4-22
Date Nitrate (mg/I) Chloride (mg/I)
8/22/2018 55.4 613
11/28/2018 75.7 567
3/8/2019 71.9 528
6/5/2019 83.9 662
9/4/2019 72.5 588
12/10/2019 59.9 608
2/19/2020 57.7 606
5/27/2020 60.5 578
9/4/2020 64.8 514
10/28/2020 64.9 523
2/23/2021 69.6 618
6/9/2021 89.3 408
8/24/2021 35.1 410
12/1/2021 68.8 586
3/9/2022 40.4 442
6/8/2022 45 564
8/30/2022 69.9 637
11/30/2022 62.0 601
TW4-24
Date Nitrate (mg/I) Chloride (mg/I)
6/27/2007 26.1 770
8/15/2007 29 791
10/10/2007 24.7 692
3/26/2008 24.4 740
6/25/2008 45.3 834
9/10/2008 38.4 1180
10/15/2008 44.6 1130
3/4/2009 30.5 1010
6/24/2009 30.4 759
9/15/2009 30.7 618
12/17/2009 28.3 1080
2/25/2010 33.1 896
6/9/2010 30 639
8/11/2010 32 556
8/24/2010 31 587
10/6/2010 31 522
2/17/2011 31 1100
5/26/2011 35 1110
8/17/2011 34 967
11/16/2011 35 608
1/18/2012 37 373
6/6/2012 37 355
8/30/2012 37 489
10/3/2012 38 405
2/11/2013 35.9 1260
6/5/2013 23.7 916
9/3/2013 32.6 998
10/29/2013 34.6 1030
1/27/2014 31.6 809
5/19/2014 35 1020
8/11/2014 31.5 1150
10/21/2014 35.7 1050
3/9/2015 34.6 944
6/8/2015 31.8 1290
8/31/2015 25.3 788
10/19/2015 29.6 909
3/9/2016 29.1 989
5/23/2016 24.2 771
7/25/2016 34.4 1,180
10/12/2016 31.9 1,010
3/8/2017 41.3 1,090
6/13/2017 39.9 1,080
7/26/2017 40.0 1,230
10/11/2017 31.7 895
3/12/2018 44.9 1,320
6/14/2018 33.6 792
8/22/2018 33.8 996
11/28/2018 38.4 1,100
3/8/2019 39.3 1,040
6/5/2019 33.2 1,020
9/4/2019 36.4 1,130
12/10/2019 33.8 1,090
lW4-24
Date Nitrate (mg/I) Chloride (mg/I)
2/19/2020 37.1 1,010
5/27/2020 41.7 1,060
9/4/2020 39.1 1,100
10/28/2020 35.9 1,050
2/23/2021 41.9 1,170
6/9/2021 48.0 938
8/24/2021 26.7 1,010
12/1/2021 43.6 1,140
3/9/2022 36.2 890
6/8/2022 35.0 944
8/30/2022 32.0 868
11/30/2022 27.6 972
TW4-25
Date Nitrate (mg/I) Chloride (mg/I)
6/27/2007 17.1 395
8/15/2007 16.7 382
10/10/2007 17 356
3/26/2008 18.7 374
6/25/2008 22.1 344
9/10/2008 18.8 333
10/15/2008 21.3 366
3/4/2009 15.3 332
6/24/2009 15.3 328
9/15/2009 3.3 328
12/16/2009 14.2 371
2/23/2010 14.4 296
6/8/2010 16 306
8/10/2010 14 250
10/5/2010 15 312
2/16/2011 15 315
5/25/2011 16 321
8/16/2011 16 276
11/15/2011 16 294
1/18/2012 16 304
5/31/2012 16 287
9/11/2012 17 334
10/3/2012 17 338
2/11/2013 9.04 190
6/5/2013 5.24 136
9/3/2013 5.69 119
10/29/2013 6.10 88.6
1/27/2014 2.16 85.7
5/19/2014 1.21 51.1
8/11/2014 1.6 67
10/21/2014 1.03 58.1
3/9/2015 14.4 310
6/8/2015 1.14 58.3
8/31/2015 1.63 69.2
10/21/2015 1.78 93.7
3/9/2016 0.837 62.7
5/23/2016 0.959 75.5
7/25/2016 1.78 74.1
10/12/2016 1.24 59.8
3/8/2017 17.0 285
6/13/2017 0.976 69.8
7/26/2017 1.23 70.1
10/11/2017 1.29 68.0
3/12/2018 2.23 70.5
6/14/2018 1.14 60.3
TW4-25
Date Nitrate (mg/I) Chloride (mg/I)
8/22/2018 0.810 69.1
11/28/2018 0.634 59.7
3/8/2019 0.639 65.0
6/5/2019 0.821 59.0
9/4/2019 0.548 58.1
12/10/2019 0.841 73.1
2/19/2020 0.607 86.0
5/27/2020 0.851 76.8
9/4/2020 0.994 67.3
10/28/2020 1.64 61.3
2/23/2021 3.43 100
6/9/2021 1.57 55.1
8/24/2021 0.793 69.3
12/1/2021 0.978 93.7
3/9/2022 1.8 70.3
6/8/2022 0.88 72.8
8/30/2022 1.51 82.5
11/30/2022 1.47 67.2
MW-30
Date Nitrate (mg/I) Date Chloride (mg/I)
6/22/2005 12.4 6/22/2005 125
9/22/2005 12.8 9/22/2005 125
12/14/2005 13.6 12/14/2005 128
3/22/2006 13.8 3/22/2006 125
6/21/2006 14.5 6/21/2006 124
9/13/2006 14.1 9/13/2006 118
10/25/2006 14.6 10/25/2006 124
3/15/2007 14.4 3/15/2007 125
8/22/2007 14.6 8/22/2007 126
10/24/2007 14.9 10/24/2007 122
3/19/2008 14.8 3/19/2008 118
6/3/2008 18.7 6/3/2008 125
8/4/2008 17.3 8/4/2008 121
11/5/2008 15.6 11/5/2008 162
2/3/2009 15.3 2/3/2009 113
5/13/2009 15.1 5/13/2009 122
8/24/2009 20.9 8/24/2009 118
10/14/2009 15.0 10/14/2009 129
1/20/2010 15.4 1/20/2010 106
2/9/2010 16.1 2/9/2010 127
4/27/2010 15.8 4/27/2010 97
5/24/2010 17.0 9/14/2010 111
6/15/2010 15.3 11/9/2010 126
8/24/2010 16.0 2/1/2011 134
9/14/2010 15.0 4/11/2011 134
10/19/2010 15.0 5/10/2011 128
11/9/2010 15.0 6/20/2011 127
12/14/2010 16.0 7/5/2011 127
1/10/2011 15.0 8/3/2011 126
2/1/2011 16.0 9/7/2011 145
3/14/2011 17.0 10/4/2011 129
4/11/2011 16.0 11/8/2011 122
5/10/2011 16.0 12/12/2011 124
6/20/2011 17.0 1/24/2012 124
7/5/2011 17.0 2/14/2012 126
8/3/2011 14.0 3/14/2012 128
9/7/2011 16.0 4/10/2012 128
10/4/2011 16.0 5/2/2012 124
11/8/2011 16.0 6/18/2012 131
12/12/2011 16.0 7/10/2012 128
1/24/2012 17.0 8/7/2012 139
2/14/2012 17.0 9/19/2012 130
3/14/2012 18.0 10/23/2012 135
4/10/2012 17.0 11/13/2012 114
5/2/2012 16.0 12/26/2012 122
MW-30
Date Nitrate (mg/I) Date Chloride (mg/I)
6/18/2012 15.0 1/23/2013 128
7/10/2012 17.0 2/26/2013 129
8/7/2012 18.0 3/20/2013 126
9/19/2012 16.0 4/17/2013 117
10/23/2012 16.2 5/15/2013 119
11/13/2012 18.5 6/25/2013 127
12/26/2012 17.2 7/10/2013 130
1/23/2013 19.2 8/20/2013 126
2/26/2013 21.4 9/18/2013 131
3/20/2013 14.3 10/22/2013 128
4/17/2013 16.8 11/20/2013 124
5/15/2013 18.8 12/18/2013 134
6/25/2013 16.1 1/8/2014 131
7/10/2013 17.6 2/25/2014 135
8/20/2013 16.4 3/11/2014 144
9/18/2013 16.9 4/23/2014 154
10/22/2013 19.7 5/14/2014 128
11/20/2013 19.5 6/3/2014 128
12/18/2013 20.7 7/29/2014 140
1/8/2014 20.3 8/20/2014 139
2/25/2014 18.4 9/9/2014 136
3/11/2014 21.3 10/7/2014 136
4/23/2014 18.3 11/10/2014 154
5/14/2014 17.9 12/10/2014 138
6/3/2014 19.4 1/21/2015 144
7/29/2014 15.6 2/4/2015 136
8/20/2014 13.8 3/3/2015 132
9/9/2014 16.8 4/8/2015 142
10/7/2014 11.0 5/12/2015 145
11/10/2014 16.2 6/24/2015 142
12/10/2014 17.1 7/7/2015 145
1/21/2015 19.5 8/11/2015 165
2/4/2015 14.9 9/15/2015 165
3/3/2015 17.3 10/7/2015 137
4/8/2015 17.0 11/11/2015 140
5/12/2015 16.1 12/9/2015 144
6/24/2015 15.8 1/20/2016 143
7/7/2015 15.3 2/10/2016 145
8/11/2015 17.9 3/2/2016 142
9/15/2015 17.3 4/13/2016 144
10/7/2015 19.1 5/4/2016 139
11/11/2015 16.3 6/14/2016 142
12/9/2015 18.2 7/13/2016 137
1/20/2016 14.6 8/18/2016 150
2/10/2016 20.0 9/14/2016 146
MW-30
Date Nitrate (mg/I) Date Chloride (mg/I)
3/2/2016 17.8 10/5/2016 148
4/13/2016 18.0 11/3/2016 143
5/4/2016 17.3 12/6/2016 158
6/14/2016 18.S 1/18/2017 150
7/13/2016 16.1 2/2/2017 150
8/18/2016 18.0 3/6/2017 250
9/14/2016 17.0 4/5/2017 146
10/5/2016 17.2 5/2/2017 146
11/3/2016 18.0 6/5/2017 153
12/6/2016 18.2 7/11/2017 160
1/18/2017 19.0 8/14/2017 173
2/2/2017 17.4 9/12/2017 149
3/6/2017 20.4 10/5/2017 153
4/5/2017 18.3 11/1/2017 156
5/2/2017 17.S 12/6/2017 159
6/5/2017 18.8 1/23/2018 152
7/11/2017 16.2 2/22/2018 158
8/14/2017 19.2 3/8/2018 167
9/12/2017 18.7 4/12/2018 145
10/5/2017 18.8 5/15/2018 174
11/1/2017 17.4 6/19/2018 169
12/6/2017 18.3 7/24/2018 177
1/23/2018 15.2 8/10/2018 170
2/22/2018 17.6 9/11/2018 183
3/8/2018 17.0 10/22/2018 140
4/12/2018 17.3 11/14/2018 166
5/15/2018 17.7 12/11/2018 154
6/19/2018 16.9 1/16/2019 157
7/24/2018 17.4 2/13/2019 167
8/10/2018 18.7 3/6/2019 160
9/11/2018 18.0 4/9/2019 138
10/22/2018 17.3 5/7/2019 175
11/14/2018 16.9 6/3/2019 165
12/11/2018 17.2 7/16/2019 181
1/16/2019 17.9 8/6/2019 190
2/13/2019 18.2 9/24/2019 176
3/6/2019 16.2 10/8/2019 170
4/9/2019 18.5 11/13/2019 180
5/7/2019 17.9 12/4/2019 185
6/3/2019 15.8 1/15/2020 182
7/16/2019 19.3 2/5/2020 187
8/6/2019 15.8 3/11/2020 182
9/24/2019 17.9 4/6/2020 195
10/8/2019 18.2 5/6/2020 177
11/13/2019 17.2 6/3/2020 180
MW-30
Date Nitrate (mg/I) Date Chloride (mg/I)
12/4/2019 17.8 7/6/2020 185
1/15/2020 16.4 8/11/2020 183
2/5/2020 17.8 9/1/2020 166
3/11/2020 19.0 10/13/2020 183
4/6/2020 18.1 11/17/2020 150
5/6/2020 18.6 12/8/2020 166
6/3/2020 18.3 1/11/2021 184
7/6/2020 18.4 2/10/2021 189
8/11/2020 21.1 3/9/2021 192
9/1/2020 18.3 4/14/2021 162
10/13/2020 16.8 5/11/2021 188
11/17/2020 13.4 6/8/2021 170
12/8/2020 12.0 7/29/2021 188
1/11/2021 17.7 8/9/2021 161
2/10/2021 14.3 9/8/2021 183
3/9/2021 17.0 10/19/2021 182
4/14/2021 17.7 11/17/2021 182
5/11/2021 18.6 12/14/2021 184
6/8/2021 17.0 1/17/2022 181
7/29/2021 20.6 2/9/2022 184
8/9/2021 16.5 3/7/2022 196
9/8/2021 15.4 4/20/2022 173
10/19/2021 14.3 5/4/2022 195
11/17/2021 18.0 6/7/2022 126
12/14/2021 18.6 7/13/2022 108
1/17/2022 14.5 8/9/2022 185
2/9/2022 13.6 9/20/2022 182
3/7/2022 16.6 10/13/2022 196
4/20/2022 17.0 11/9/2022 156
5/4/2022 15.0 12/13/2022 195
6/7/2022 11.0
7/13/2022 17.6
8/9/2022 13.5
9/20/2022 16.5
10/13/2022 17.9
11/9/2022 15.9
12/13/2022 16.1
Under the groundwater sampling program, accelerated monitoring for
nitrate began in MW-30 prior to when the accelerated monitoring for
chloride began. This difference accounts for the different number of
data points represented above.
MW-31
Date Nitrate (mg/I) Date Chloride (mg/I)
6/22/2005 24.2 6/22/2005 139
9/22/2005 22.4 9/22/2005 136
12/14/2005 23.8 12/14/2005 135
3/22/2006 24.1 3/22/2006 133
6/21/2006 25.3 6/21/2006 138
9/13/2006 24.6 9/13/2006 131
10/25/2006 25.1 10/25/2006 127
3/15/2007 23.2 3/15/2007 132
3/15/2007 22.0 3/15/2007 132
8/27/2007 23.3 8/27/2007 136
10/24/2007 24.6 10/24/2007 122
3/19/2008 25.0 3/19/2008 124
6/3/2008 29.3 6/3/2008 128
8/4/2008 28.7 8/4/2008 124
11/11/2008 29.9 11/11/2008 119
2/3/2009 23.4 2/3/2009 115
5/13/2009 22.4 5/13/2009 124
8/24/2009 15.4 8/24/2009 122
10/14/2009 22.6 10/14/2009 138
2/9/2010 21.7 2/9/2010 128
4/20/2010 22.5 4/20/2010 128
5/21/2010 23.0 9/13/2010 139
6/15/2010 21.1 11/9/2010 138
8/24/2010 22.0 2/1/2011 145
9/13/2010 21.0 4/1/2011 143
10/19/2010 20.0 5/10/2011 143
11/9/2010 20.0 6/20/2011 145
12/14/2010 20.0 7/5/2011 148
1/10/2011 19.0 8/2/2011 148
2/1/2011 21.0 9/6/2011 148
3/14/2011 22.0 10/3/2011 145
4/1/2011 21.0 11/8/2011 145
5/10/2011 20.0 12/12/2011 148
6/20/2011 22.0 1/24/2012 155
7/5/2011 22.0 2/13/2012 150
8/2/2011 20.0 3/13/2012 152
9/6/2011 21.0 4/9/2012 160
10/3/2011 21.0 5/2/2012 151
11/8/2011 21.0 6/18/2012 138
12/12/2011 21.0 7/9/2012 161
MW-31
Date Nitrate (mg/I) Date Chloride (mg/I)
1/24/2012 21.0 8/6/2012 175
2/13/2012 21.0 9/18/2012 172
3/13/2012 22.0 10/22/2012 157
4/9/2012 21.0 11/6/2012 189
5/2/2012 20.0 12/18/2012 170
6/18/2012 21.6 1/22/2013 176
7/9/2012 21.0 2/19/2013 174
8/6/2012 21.0 3/19/2013 168
9/18/2012 21.0 4/16/2013 171
10/22/2012 18.0 5/13/2013 169
11/6/2012 23.6 6/24/2013 179
12/18/2012 22.2 7/9/2013 182
1/22/2013 22.8 8/19/2013 183
2/19/2013 19.3 9/17/2013 193
3/19/2013 19.1 10/23/2013 188
4/16/2013 18.8 11/18/2013 174
5/13/2013 23.8 12/17/2013 203
6/24/2013 20.0 1/7/2014 194
7/9/2013 21.7 2/17/2014 197
8/19/2013 16.0 3/10/2014 230
9/17/2013 21.2 4/28/2014 230
10/23/2013 21.2 5/13/2014 200
11/18/2013 23.9 6/2/2014 173
12/17/2013 24.2 7/28/2014 200
1/7/2014 24.0 8/18/2014 210
2/17/2014 20.6 9/3/2014 210
3/10/2014 26.2 10/6/2014 205
4/28/2014 19.1 11/4/2014 204
5/13/2014 23.3 12/9/2014 215
6/2/2014 23.1 1/20/2015 226
7/28/2014 19.0 2/2/2015 211
8/18/2014 15.2 3/3/2015 209
9/3/2014 18.9 4/7/2015 211
10/6/2014 15.9 5/11/2015 225
11/4/2014 20.9 6/23/2015 228
12/9/2014 17.0 7/6/2015 222
1/20/2015 20.9 8/10/2015 264
2/2/2015 18.7 9/15/2015 231
3/3/2015 19.8 10/6/2015 222
4/7/2015 19.0 11/9/2015 215
MW-31
Date Nitrate (mg/I) Date Chloride (mg/I)
5/11/2015 18.4 12/8/2015 231
6/23/2015 18.0 1/19/2016 228
7/6/2015 18.8 2/15/2016 246
8/10/2015 19.9 3/2/2016 228
9/15/2015 18.9 4/12/2016 254
10/6/2015 22.0 5/3/2016 243
11/9/2015 18.4 6/15/2016 252
12/8/2015 19.5 7/12/2016 241
1/19/2016 18.9 8/16/2016 272
2/15/2016 18.8 9/13/2016 254
3/2/2016 18.0 10/4/2016 260
4/12/2016 22.8 11/1/2016 267
5/3/2016 18.6 12/5/2016 274
6/15/2016 19.2 1/17/2017 287
7/12/2016 17.4 2/7/2017 266
8/16/2016 19.7 3/6/2017 250
9/13/2016 18.6 4/4/2017 263
10/4/2016 18.8 5/1/2017 263
11/1/2016 19.8 6/5/2017 278
12/5/2016 18.5 7/11/2017 254
1/17/2017 20.9 8/14/2017 310
2/7/2017 21.1 9/11/2017 248
3/6/2017 20.4 10/2/2017 287
4/4/2017 19.5 11/1/2017 292
5/1/2017 18.3 12/4/2017 285
6/5/2017 20.8 1/24/2018 323
7/11/2017 18.0 2/20/2018 292
8/14/2017 19.5 3/5/2018 311
9/11/2017 20.2 4/17/2018 308
10/2/2017 21.0 5/14/2018 326
11/1/2017 19.2 6/18/2018 359
12/4/2017 19.2 7/23/2018 351
1/24/2018 17.0 8/10/2018 336
2/20/2018 18.8 9/10/2018 333
3/5/2018 19.0 10/24/2018 286
4/17/2018 19.0 11/13/2018 281
5/14/2018 18.8 12/10/2018 302
6/18/2018 18.0 1/15/2019 283
7/23/2018 18.0 2/12/2019 296
8/10/2018 18.3 3/5/2019 322
MW-31
Date Nitrate (mg/I) Date Chloride (mg/I)
9/10/2018 20.1 4/10/2019 294
10/24/2018 18.3 5/7/2019 346
11/13/2018 17.9 6/3/2019 325
12/10/2018 18.3 7/15/2019 374
1/15/2019 19.0 8/5/2019 372
2/12/2019 18.6 9/23/2019 365
3/5/2019 18.5 10/9/2019 318
4/10/2019 19.7 11/12/2019 338
5/7/2019 18.9 12/3/2019 343
6/3/2019 19.7 1/14/2020 381
7/15/2019 19.8 2/4/2020 370
8/5/2019 17.0 3/10/2020 368
9/23/2019 19.5 4/6/2020 376
10/9/2019 19.8 5/5/2020 361
11/12/2019 18.8 6/2/2020 377
12/3/2019 18.3 7/7/2020 370
1/14/2020 17.5 8/10/2020 368
2/4/2020 18.0 9/1/2020 367
3/10/2020 19.2 10/19/2020 345
4/6/2020 18.8 11/16/2020 251
5/5/2020 20.1 12/7/2020 311
6/2/2020 18.7 1/12/2021 354
7/7/2020 19.2 2/9/2021 380
8/10/2020 21.6 3/8/2021 388
9/1/2020 18.4 4/13/2021 377
10/19/2020 18.6 5/10/2021 384
11/16/2020 16.5 6/7/2021 374
12/7/2020 18.8 7/27/2021 391
1/12/2021 17.1 8/9/2021 365
2/9/2021 14.3 9/7/2021 356
3/8/2021 17.4 10/19/2021 371
4/13/2021 18.6 11/15/2021 366
5/10/2021 18.9 12/13/2021 376
6/7/2021 20.6 1/19/2022 370
7/27/2021 18.7 2/8/2022 379
8/9/2021 15.7 3/7/2022 416
9/7/2021 16.0 4/11/2022 372
10/19/2021 18.1 5/3/2022 381
11/15/2021 19.3 6/6/2022 351
12/13/2021 17.9 7/12/2022 421
MW-31
Date Nitrate (mg/I) Date Chloride (mg/I)
1/19/2022 18.0 8/8/2022 369
2/8/2022 13.5 9/20/2022 390
3/7/2022 17.0 10/11/2022 397
4/11/2022 18.0 11/8/2022 243
5/3/2022 13.0 12/13/2022 335
6/6/2022 13.0
7/12/2022 16.9
8/8/2022 16.8
9/20/2022 17.1
10/11/2022 17.0
11/8/2022 16.0
12/13/2022 12.6
Under the groundwater sampling progran, accelerated monitoring
for nitrate began in MW-31 prior to when the accelerated
monitoring for chloride began. This difference accounts for the
different number of data points represented above.
TabK
Concentration Trend Graphs
oi-unr
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en oi-unr
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co C\I 0 co co 0 .... .... ....
(7J6w)
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oi-unr
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-oi-unr
H-das
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c\i
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Cl)
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0
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0
T"" I z
3: I-
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(116w)
LO 0
T"" T""
8c-rnV\I
oi-unr
L~-das
v~-oaa
l ~ -Jd'v'
so-1nr
0
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N I z
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0 CX) 0 co
(7J6w)
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oi-unr
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17~-oaa
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0 ; ca ... -C Cl) u C
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(7J6w)
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oi-unr
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oi-unr
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v~-oaa
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0
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oi-unr
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C\J (7,Sw) ,....
0 0
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,------r----..-------.-----.-----,----~------.-----.-si-oaa
-oi-unr
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0 0 .,f, ,-
0 C! C\l ,-
0 0 0 0
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00-qa::1
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oo-uer
• oo-uer
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0 0 ci
C\I .-
0 0 ci 0 .-
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ci C\I
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C
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,--------,--------.------,-------"T"------.-gi-oaa
8l-JBV\I
oi-unr
H-das
• v~-oaa
l ~ -JdV
f---------+--------+--------Jf---------+-------+ 90-lOQ
0 0 I()
C\i
0 0 0
C\J
0 0 I()
0 0 0
(7/5w) T""
0 0 I()
0
0 0 0 ci
0 C 0 ; ca I,., -C
G) u C
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0 ci 0 ci 0 ci ci ci ~ r-,.. u, u, ""' en N ,-I <
.... .... N Ul 0 Ul 0 0 0 0 0 0
12/1/2005
5/1/2006
10/1/2006
3/1/2007
8/1/2007
1/1/2008
6/1/2008
11/1/2008
4/1/2009
9/1/2009
2/1/2010
7/1/2010
12/1/2010
5/1/2011
10/1/2011
3/1/2012
8/1/2012
1/1/2013
6/1/2013
11/1/2013
4/1/2014
9/1/2014
2/1/2015
7/1/2015
12/1/2015
5/1/2016
10/1/2016
3/1/2017
8/1/2017
1/1/2018
6/1/2018
11/1/2018
4/1/2019
9/1/2019
2/1/2020
7/1/2020
12/1/2020
5/1/2021
10/1/2021
3/1/2022
8/1/2022
N Ul 0
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w Ul 0
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TW4-21 Nitrate Concentrations
25.0 -,--------------------------------------------
20.0 -4------------------------------------------•----
15.0 +----------------------------------11 I I I \ T I \ I. I • I II
10.0 ~. 'Jf f I f I I , I I fl I I I 11-1 I I --t-1-
5.0
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.... N w ~ 1.11 0\ 0 0 0 0 0 0
0 0 0 0 0 0 0
12/1/2005
5/1/2006
10/1/2006
3/1/2007
8/1/2007
1/1/2008
6/1/2008
11/1/2008
4/1/2009
9/1/2009
2/1/2010
7/1/2010
12/1/2010
5/1/2011 -I ~ 10/1/2011 ~
3/1/2012 I
N
8/1/2012 1--'
1/1/2013 n ::r
6/1/2013 -0
11/1/2013 ... -· 4/1/2014 C.
tD
9/1/2014 n
2/1/2015 0
7/1/2015 ::s n
12/1/2015 tD ::s
5/1/2016 ,... ...
10/1/2016 0J ,...
3/1/2017 -· 0
8/1/2017 ::s
"' 1/1/2018
6/1/2018
11/1/2018
4/1/2019
9/1/2019
2/1/2020
7/1/2020
12/1/2020
5/1/2021
10/1/2021
3/1/2022
8/1/2022
100
90
80
70
60
_,
'iio 50 E
40
30
TW4-22 Nitrate Concentrations
20 ~ 01:.1.: ...: I
10
0
~ ~ ~ ~ ~ y ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ f ~ ~ ~ f ~ ~ ~ f ~ ~ # # # # # # # # # # # # # # # #
0
2/28/2007
8/31/2007
2/29/2008
8/31/2008
2/28/2009
8/31/2009
2/28/2010
8/31/2010
2/28/2011
8/31/2011
2/29/2012
8/31/2012
2/28/2013
8/31/2013
2/28/2014
8/31/2014
2/28/2015
8/31/2015
2/29/2016
8/31/2016
2/28/2017
8/31/2017
2/28/2018
8/31/2018
2/28/2019
8/31/2019
2/29/2020
8/31/2020
2/28/2021
8/31/2021
2/28/2022
8/31/2022
.... N 0 0 0 0
w 0 0
mg/L
~ 0
V, 0 0
en 0 0
-.J 0 0
00 0 0
-I ~ ~ I N N
n :r -0 ., -· ~
ft)
n 0 ::, n
ft) ::,
r+ .,
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"'
TW4-24 Nitrate Concentrations
60
50
40
_,
tio 30 E
20
10
0
~~~~~~~~~~yy~~~~~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ N~0~~N~~'~N~~N$NN~~~\~~\~~w~4~4~~~~ (o\ "),~\ (o\ ,$>' 'o' ◊' q,, ').,\ q,, "),\ q,, ').,\ "),\ q,, '>, 'I,\ '\ '\ ,,,, q,, ,,, ').,\ q,, q,,
V,
C
0 ·-..,
~ ..,
C
QI u
C
0 u
QI
"ts ·-...
0
..c u
~ N I ~
1/Sw
..I tio E
TW4-25 Nitrate Concentrations
25
20
15
10
5
0
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1/3w
6/22/2005
8/22/2007
1/10/2011
5/10/2011
9/7/2011
1/24/2012
5/2/2012
9/19/2012
1/23/2013
5/15/2013
9/18/2013
1/8/2014
5/14/2014
9/9/2014
1/21/2015
5/12/2015
9/15/2015
1/20/2016
5/4/2016
9/14/2016
1/18/2017
5/2/2017
9/12/2017
1/23/2018
5/15/2018
9/11/2018
1/16/2019
5/7/2019
9/24/2019
1/15/2020
5/6/2020
9/1/2020
1/11/2021
5/11/2021
9/8/2021
1/17/2022
5/4/2022
9/20/2022
0 b
V,
b
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b
N ~
0
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b
s
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V, 0 V, 0 V, 0
0 0 0 0 0 0 0 ~ I .,
6/1/2005
10/1/2005
2/1/2006
6/1/2006
10/1/2006
2/1/2007
6/1/2007
10/1/2007
2/1/2008
6/1/2008
10/1/2008
2/1/2009
6/1/2009
10/1/2009
2/1/2010
6/1/2010 s 10/1/2010 ~ 2/1/2011 I 6/1/2011 w
10/1/2011 0
2/1/2012 n 6/1/2012 :r
10/1/2012 -0 2/1/2013 ~ -· 6/1/2013 a.
10/1/2013 It)
2/1/2014 n
6/1/2014 0
10/1/2014 :::,
2/1/2015 n
It) 6/1/2015 :::,
10/1/2015 ,...
~ 2/1/2016 QJ
6/1/2016 ,... -· 10/1/2016 0
2/1/2017 :::,
6/1/2017 V,
10/1/2017
2/1/2018
6/1/2018
10/1/2018
2/1/2019
6/1/2019
10/1/2019
2/1/2020
6/1/2020
10/1/2020
2/1/2021
6/1/2021
10/1/2021
2/1/2022
6/1/2022
10/1/2022
r-
6/1/2005
10/1/2005
2/1/2006
6/1/2006
10/1/2006
2/1/2007
6/1/2007
10/1/2007
2/1/2008
6/1/2008
10/1/2008
2/1/2009
6/1/2009
10/1/2009
2/1/2010
6/1/2010
10/1/2010
2/1/2011
6/1/2011
10/1/2011
2/1/2012
6/1/2012
10/1/2012
2/1/2013
6/1/2013
10/1/2013
2/1/2014
6/1/2014
10/1/2014
2/1/2015
6/1/2015
10/1/2015
2/1/2016
6/1/2016
10/1/2016
2/1/2017
6/1/2017
10/1/2017
2/1/2018
6/1/2018
10/1/2018
2/1/2019
6/1/2019
10/1/2019
2/1/2020
6/1/2020
10/1/2020
2/1/2021
6/1/2021
10/1/2021
2/1/2022
6/1/2022
10/1/2022
0 0
1.11
0
I-' 0
0
I-' 1.11
0
N 0 0
N 1.11
0
w 0 0
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6/1/2005
10/1/2005
2/1/2006
6/1/2006
10/1/2006
2/1/2007
6/1/2007
10/1/2007
2/1/2008
6/1/2008
10/1/2008
2/1/2009
6/1/2009
10/1/2009
2/1/2010
6/1/2010
10/1/2010
2/1/2011
6/1/2011
10/1/2011
2/1/2012
6/1/2012
10/1/2012
2/1/2013
6/1/2013
10/1/2013
2/1/2014
6/1/2014
10/1/2014
2/1/2015
6/1/2015
10/1/2015
2/1/2016
6/1/2016
10/1/2016
2/1/2017
6/1/2017
10/1/2017
2/1/2018
6/1/2018
10/1/2018
2/1/2019
6/1/2019
10/1/2019
2/1/2020
6/1/2020
10/1/2020
2/1/2021
6/1/2021
10/1/2021
2/1/2022
6/1/2022
10/1/2022
0 I.fl 0
I-> 0 0
I-> I.fl
0
N 0 0
N I.fl 0
w 0 0
w
I.fl 0
~ 0 0
~ I.fl 0
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TabL
CSV Transmittal Letter
Kathy Weinel
From:
Sent:
To:
Cc:
Subject:
Attachments:
Dear Mr. Goble,
Kathy Weinel
Wednesday, February 8, 2023 9:54 AM
Phillip Goble
'Dean Henderson'; David Frydenlund; Scott Bakken; Garrin Palmer; Logan Shumway;
Jordan Christine App; Dawn Kolkman
Transmittal of CSV Files White Mesa Mill 2022 Q4 Nitrate Monitoring
22J2146 FINAL EnergyFuels.csv; Q4 2022 DTW all programs.csv; Q4 2022 Field Data.csv
Attached to this e-mail is an electronic copy of laboratory results for Nitrate monitoring conducted at the White Mesa
Mill during the fourth quarter of 2022, in Comma Separated Value (CSV) format.
Please contact me at 303-389-4131 if you have any questions on this transmittal.
Yours Truly
eF ~v ·••xo Energy Fuels Resources (USA) Inc.
Kathy Weinel
Director. Regulatory Compliance
t:303.389.4134 I 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 recfpient(s).
1
TabM
Residual Mass Estimate Analysis Figure
Table M.1
Residual Nitrate Plume Mass
residual
plume
quarter mass (lb)
baseline 43700
01 2013 41350
02 2013 34140
03 2013 36930
04 2013 41150
01 2014 31410
02 2014 30620
03 2014 24140
04 2014 34370
01 2015 38740
02 2015 33042
03 2015 34880
04 2015 30980
01 2016 33083
02 2016 28465
03 2016 32230
04 2016 31798
01 2017 43787
02 2017 32145
03 2017 32939
04 2017 31501
01 2018 33616
02 2018 31257
03 2018 25568
04 2018 28805
01 2019 29509
02 2019 31455
03 2019 30976
04 2019 29870
01 2020 32740
02 2020 30467
03 2020 35525
04 2020 25875
01 2021 35052
02 2021 34143
03 2021 28932
04 2021 28290
01 2022 27146
02 2022 31933
03 2022 29852
03 2022 27014
Notes:
lbs =pounds
@:
Q) -l'O E :;: u,
LU
u, u,
ftl :E
Q)
E ~ a:
Q) -m .. -z
45000 ..---------------------------------------------------------.
40000 ., ·--•---11-1------------------
, __
35000 •I
30000 .,
25000 -1-----------111-------------------------------------------l
20000 ------.--.--......--------....,....----,.--,.----------.-----------........ ---........ -------------! ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~####~~~~#### ✓~~~¥?~~¥~~~¥~~~??~~?~~~?~~~¥?~~¥?~~~?~~~
~ Mlll11•MumlftJau&s,Net, ---l.nNf•~•O'M•PunilMDJ&ll'TWftl)
HYDRO
GEO
CHEM,INC. Approved
SJS
Time Series of Nitrate Plume Mass Estimates
Dale Author Dale File Name !Figure
Nmtrend 4022.>cls M .1
H:\718000\feb23\nitrate\masscalc\Nmtrend4O22: Fig M.1