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Energy Fuels Resources (USA) Inc. 225 Union Blvd. Suite 600 Lakewood, CO, US, 80228 303 974 2140 D 13C- 20Z I -û 1923 1 www.energyfuels.com
November 10, 2021
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 3rd Quarter 2021 Nitrate Monitoring Report
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 3rd
Quarter of 2021 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.
Yours very truly,
LLa
ENERGY FUELS RESOURCES (USA) INC.
Kathy Weinel
Quality Assurance Manager
cc: David Frydenlund
Logan Shumway
Garrin Palmer
Scott Bakken
November 10, 2021
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 3rd Quarter 2021 Nitrate Monitoring Report
Energy Fuels Resources (USA) Inc.
225 Union Blvd. Suite 600
Lakewood, CO, US, 80228
303 974 2140
www.energyfuels.com
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 3rd
Quarter of 2021 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.
Yours very truly,
i(~Jv~
ENERGY FUELS RESOURCES (USA) INC.
Kathy Weinel
Quality Assurance Manager
cc: David Frydenlund
Logan Shumway
Garrin Palmer
Scott Bakken
White Mesa Uranium Mill
Nitrate Monitoring Report
State of Utah
Stipulated Consent Agreement, December 2014
Docket No. UGW12-04
3rd Quarter
(July through September)
2021
Prepared by:
Energy Fuels Resources (USA) Inc.
225 Union Boulevard, Suite 600
Lakewood, CO 80228
November 10, 2021
TABLE OF CONTENTS
1.0 INTRODUCTION ................................................................................................. 1
2.0 GROUNDWATER NITRATE MONITORING ................................................ !
2.1 Samples and Measurements Taken During the Quarter ..................................... l
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 .................... 21
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
OPERA TIO NS REPORT .................................................................................. 26
5 .1 Introduction ....................................................................................................... 26
5.2 Pumping Well Data Collection ......................................................................... 26
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 ............................................................................ 27
CORRECTIVE ACTION REPORT ................................................................. 27
Assessment of Previous Quarter's Corrective Actions ..................................... 27
CONCLUSIONS AND RECOMMENDATIONS ............................................ 28
ELECTRONIC DATA FILES AND FORMAT .............................................. 32
SIGNATURE AND CERTIFICATION ........................................................... 33
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
ll
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
iii
ACRONYM LIST
AWAL
CA
CAP
CIR
DIFB
DWMRC
DRC
EFRI
ft amsl
GWDP
LCS
MS
MSD
QA
QAP
QC
RPD
sco
SOPs
UDEQ
voe
American West Analytical Laboratory
Consent Agreement
Corrective Action Plan
Contamination Investigation Report
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 R317-6-6.15(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 Repo11, as required under the SCO, State of Utah
Docket No. UGW12-04 for the third quarter of 2021. 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 third quarter of 2021.
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 7.6, dated August 22, 2019 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-3, 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, TW4-1, 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.
4
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.
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, in
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,
American West Analytical Laboratories ("AW AL").
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 AW AL. Table 1 lists the dates when analytical results
were reported to the Quality Assurance ("QA") Manager 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 Gare 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 QA Manager performed a QNQuality Control ("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 QNQC, holding times, receipt temperature and laboratory data QNQC are discussed
in Sections 3.4.1 through 3.4.7 below.
The analytical laboratory has provided summary reports of the analytical QNQC measurements
necessary to maintain conformance with National Environmental Laboratory Accreditation
Conference certification and reporting protocol. The Analytical Laboratory QNQC 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 QNQC 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).
The field QC sample results are included with the routine analyses under Tab G.
6
3.2 Adherence to Mill Sampling SOPs
The QA Manager review of Mill Personnel's adherence to the existing SOPs, confirmed that the
QNQC 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 QA Manager performed the
following evaluations: a field data QNQC 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 Tab
H.
3.4.1 Field Data QA/QC Evaluation
The QA Manager 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%
RPO.
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
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,
7
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.
Continuou Iy Pumped Well
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-
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.
8
However, data will be considered noncompliant only when the results are greater than 5 times
the required detection limit and the RPD is greater than 20%.
All duplicate results were within 20% RPD for the quarterly samples. The duplicate results are
provided under Tab H.
3.4.6 Other Laboratory QA/QC
Section 9.2 of the QAP requires that the laboratory's QA/QC Manager check the following items
in developing data reports: (1) sample preparation information is correct and complete, (2)
analysis information is correct and complete, (3) appropriate Analytical Laboratory procedures
are followed, (4) analytical results are correct and complete, (5) QC samples are within
established control limits, (6) blanks are within QC limits, (7) special sample preparation and
analytical requirements have been met, and (8) documentation is complete. In addition to other
laboratory checks described above, EFRI's QA Manager 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 QA/QC results met these specified acceptance limits.
The QAP Section 8.1.2 requires that a Matrix Spike/Matrix Spike Duplicate ("MS/MSD") pair
be analyzed with each analytical batch. The QAP does not specify acceptance limits for the
MS/MSD pair, and the QAP does not specify that the MS/MSD pair be prepared on EFRI
samples only. Acceptance limits for MS/MSDs are set by the laboratories. The review of the
information provided by the laboratories in the data packages verified that the QAP requirement
to analyze an MS/MSD pair with each analytical batch was met. While the QAP does not require
it, the recoveries were reviewed for compliance with the laboratory established acceptance limits.
The QAP does not require this level of review, and the results of this review are provided for
information only.
The information from the Laboratory QA/QC Summary Reports indicates that the MS/MSDs
recoveries and the associated RPDs for the samples were within acceptable laboratory limits
except as indicated in Tab 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 RPDs above or below the acceptance limits are indicative of matrix interference
most likely caused by other constituents in the samples. Matrix interferences are applicable to
the individual sample results only. The requirement in the QAP to analyze a MS/MSD pair with
each analytical batch was met and as such the data are compliant with the QAP.
The information from the Laboratory QA/QC Summary Reports indicates that the Laboratory
Control Sample recoveries were acceptable, which indicate that the analytical system was
operating properly.
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
9
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 QNQC Summary
Reports indicates that the method blanks did not contain detections of any target analytes above
the Reporting Limit.
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
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
10
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
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.
11
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 TW4-4, primarily the result of pumping at
adjacent well TW4-41.
The lack of well-defined capture associated with chloroform pumping well TW4-4 was
consistent prior to the third quarter of 2018, even though pumping since the first quarter of 2010
has depressed the water table in the vicinity of this well. The lack of a well-defined cone of
depression near 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 general, long-term increase in water levels
in this area that has been attributable to past wildlife pond recharge. Between the fourth quarter
of 2007 and the fourth quarter of 2009 Gust prior to the start of TW4-4 pumping), water levels at
TW4-4 and TW4-6 increased by nearly 2.7 and 2.9 feet at rates of approximately 1.2 feet/year
and 1.3 feet/year, respectively. However, between the start of pumping at TW4-4 (first quarter of
12
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,
TW4-30, TW4-33, and TW4-40) are trending generally downward. The downward trend is
evident at TW4-26, TW4-29, and TW4-33 since the fourth quarter of 2013; at TW4-30 only
since about the end of 2020; 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
downward since the fourth quarter of 2013. These 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 TW4-14, TW4-27 and TW4-31 were generally
increasing until about the first quarter of 2018, these water levels now appear to be relatively
stable to decreasing. Water level trends at TW4-30, which was incorporated into the chloroform
plume during the fourth quarter of 2020, 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 TW 4-14, 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 5 1h feet
higher than the water level at TW4-6 (approximately 5529.7 ft amsl) and is nearly 3 feet higher
than the water level at TW4-4 (approximately 5532.4 ft. amsl).
The static water levels at wells TW 4-14 and downgradient well TW 4-27 (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
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 (5527.7 feet amsl) is, however, lower than water
levels at adjacent wells TW4-6 (5529.7 feet amsl) and TW4-23 (5531.6 feet amsl), as shown in
the detail water level map under Tab C.
13
Hydraulic tests indicate that the permeability at TW4-27 is an order of magnitude lower than at
TW4-6 and three orders of magnitude lower than at TW4-4 (see Hydro Geo Chem, Inc. [HGC],
September 20, 2010: Hydraulic Testing of TW4-4, TW4-6, and TW4-26, White Mesa Uranium
Mill, July 2010; and HGC, November 28, 2011: Installation, Hydraulic Testing, and Perched
Zone Hydrogeology of Perched Monitoring Well TW4-27, White Mesa Uranium Mill Near
Blanding, Utah). Past similarity of water levels at TW4-14 and TW4-27, and the low
permeability estimate at TW4-27, suggested that both wells were completed in materials having
lower permeability than nearby wells. The low permeability condition likely reduced the rate of
long-term water level increase at TW4-14 and TW4-27 compared to nearby wells, yielding water
levels that appeared anomalously low. This behavior is consistent with hydraulic test data
collected from more recently installed wells TW4-29, TW4-30, TW4-31, TW4-33, TW4-34 and
TW4-35, which indicate that the permeability of these wells is one to two orders of magnitude
higher than the permeability of TW4-27 (see: HGC, January 23, 2014, Contamination
Investigation Report, TW4-12 and TW4-27 Areas, White Mesa Uranium Mill Near Blanding,
Utah; and HGC, July 1, 2014, Installation and Hydraulic Testing of TW4-35 and TW4-36,
White Mesa Uranium Mill Near Blanding, Utah [As-Built Report]). Hydraulic tests also indicate
that the permeability at TW4-36 is slightly higher than but comparable to the low permeability at
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 5528.8 ft. amsl) is more than 6 feet
lower than the water level at TW 4-14 ( 5 5 3 5. 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 TW4-14 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 TW 4-14 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 TW4-14 prior to TW4-41 pumping. Slowing of the rates
of water level increase at TW4-14 (since 2015) and TW4-27 (since early 2014), and relative
stabilization since about the first quarter of 2018, are attributable to changes in hydraulic
gradients between these wells and surrounding higher permeability materials.
In addition, water levels in this area are affected by reduced recharge at the southern wildlife
pond and the decay of the associated groundwater mound. The decay of the mound is expected to
contribute to changes in hydraulic gradients between the low permeability materials penetrated
by TW4-14 and TW4-27 and the surrounding higher permeability materials. Because TW4-27 is
closer to the southern wildlife pond than TW4-14, changes in hydraulic gradients attributable to
decay of the southern groundwater mound are expected to impact TW4-27 sooner and to a
14
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 maps for the Mill site for the previous qua1ter, as submitted with the
Nitrate Monitoring Report for the previous quarter, are attached under Tab D. A comparison of
the water table c~ntour maps for the current quarter (third quarter of 2021) to the water table
contour maps for the previous quarter (second quarter of 2021) indicates the following: water
level changes at the majority of site wells were small ( < 1 foot); as with the previous quarter, no
significant changes to water level contours north of Cell 1 resulted from water level
measurements at recently installed temporary nitrate wells TWN-20 and TWN-21; 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 drawdown at nitrate pumping well TW4-24 increased by more than 2 feet this quarter.
However drawdowns at chloroform pumping wells MW-26, TW4-2, TW4-4 and TW4-21; and
nitrate pumping well TWN-2 decreased by more than 2 feet this quarter. Water level changes at
other nitrate and chloroform pumping wells were 2 feet or less, although both increases
(decreases in drawdown) and decreases (increases in drawdown) occurred. Water level
fluctuations at pumping wells typically occur in part because of fluctuations in pumping
conditions just prior to and at the time the measurements are taken. The reported water level for
chloroform pumping well TW 4-11 is below the depth of the Brushy Basin contact this quarter.
Although both increases and decreases in drawdown occurred in pumping wells, the overall
apparent capture area of the combined pumping system is smaller than last quarter.
As discussed in Section 4.1.1, pumping at chloroform well TW 4-4, which began in the first
quarter of 2010, depressed the water table near TW 4-4, 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 quarter by the initiation of pumping at TW 4-
40.
Water levels at Piezometers 1 and 2 decreased by up to 0.17 feet this quarter; current and past
decreases are consistent with cessation of water delivery to the northern wildlife ponds as
discussed in Section 4.1.1 and the consequent continuing decay of the associated perched water
mound. Reported water level decreases of approximately 0.13 and 0.25 feet, respectively, at
TWN-1 and TWN-4 are also consistent with continuing decay of the northern groundwater
mound. The reported water level decrease of approximately 0.12 feet at both Piezometers 4 and 5
likely results primarily from reduced recharge at the southern wildlife pond.
15
The reported water level at MW-20 increased by nearly 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 increase at MW-20 paitially compensates for the
reported decrease 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.
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.
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:
16
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, TW4-39, TW4-40, and TW4-41; and nitrate pumping
wells TW4-22 and TW4-25 were less than two feet. Water level decreases occurred in
chloroform pumping wells TW4-11 (approximately 0.4 feet); TW4-19 (approximately 1 foot);
and TW4-40 (approximately 0.2 feet); and in nitrate pumping well TW4-24 (approximately 2.4
feet). Water level increases occurred in chloroform pumping wells MW-4 (approximately 0.2
feet); MW-26 (approximately 10.3 feet); TW4-1 (approximately 1.8 feet); TW4-2
(approximately 13.1 feet); TW4-4 (nearly 4.3 feet); TW4-21 (approximately 2.5 feet); TW4-37
(approximately 1 foot); TW4-39 (nearly 0.8 feet); and TW4-41 (approximately 0.8 feet); and in
nitrate pumping wells TW4-22 (nearly 0.7 feet); TW4-25 (nearly 0.7 feet); and TWN-2
(approximately 10.1 feet). The overall apparent combined capture area of the nitrate and
chloroform pumping systems is smaller than last quarter.
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
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 TW4-19 since the third quarter of 2014 are at least partly the result of
reduced recharge.
17
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 Aqtesolve™ (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
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
18
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 179,439 gallons. This equates to an
average total extraction rate of approximately 1.4 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 1.4 gpm, which is about the same as last quarter's, is near 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 TW4-19 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 of 2019; and the
first quarter of 2020. TW4-19 is outside the plume this quarter. Although periodically within the
nitrate plume, due to collapse, TW4-20 was abandoned during October, 2020.
Because chloroform pumping wells TW4-21 and TW4-37 were unambiguously within the nitrate
plume this quarter it is appropriate to include them in estimating total pumping from the nitrate
plume. Including TW4-21 and TW4-37, the volume of water removed by TW4-21, TW4-22,
TW4-24, TW4-25, TW4-37, and TWN-2 this quarter is approximately 322,817 gallons or
approximately 2.5 gpm, which exceeds the high end of the recalculated 'background' flow range
by approximately 0.83 gpm, or a factor of approximately 1.5.
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
through the plume by more than a factor of 1.5 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 10 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 less than 1 mg/L; and was not detected at MW-5 last quarter.
19
Between the previous and current quarters, nitrate concentrations increased at MW-30 and
remained about the same at MW-31. Nitrate in MW-30 increased from approximately 17.7 mg/L
to 20.6 mg/L; and nitrate in MW-31 increased slightly 18.6 mg/L to 18.7 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.
MW-30 and MW-31 are located at the toe of the nitrate plume which has associated elevated
chloride. Chloride is 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 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.
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. Except for data from wells
not sampled this quarter, all nitrate and chloride data used to develop these iso-concentration
maps are from the current quarter's sampling events. For wells not sampled this quarter, data
from the second quarter were used.
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 northern portion of the plume boundary has contracted away
from TW4-25 (due to decreases in concentration at TW4-21 and TW4-25); and the boundary has
contracted away from MW-26 (due to decreases in concentration at MW-26 and TW4-16).
Conversely, an increase in concentration at MW-28 caused the boundary to shift toward MW-28,
although MW-28 remains outside the plume. Furthermore, TWN-7, which was incorporated
within the plume for the first time during the second quarter of 2018, remains within the plume.
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 3.4 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.
20
However, decreasing to relatively stable nitrate concentrations at most wells in the vicinity of
TW 4-18 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 qua1ter of
2019, concentrations at TW4-10 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. As
discussed in Section 4.2.1, 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
increases leading to the reincorporation of these wells occurred first at TW 4-24, then at TW 4-16
and TW4-6. 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
TW4-24 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.
21
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% in the following wells
compared to last quarter: MW-28 and TW4-19;
b) Nitrate concentrations have decreased by more than 20% in the following wells
compared to last quarter: MW-26, TW4-16, TW4-18, TW4-21, TW4-22, TW4-24,
TW4-25, TW4-39, TWN-1, TWN-4 and TWN-20;
c) Nitrate concentrations have remained within 20% in the following wells compared to
last quarter: MW-11, MW-27, MW-30, MW-31, TW4-37, TWN-2, TWN-3, TWN-7 and
TWN-18; and
d) MW-25, MW-29 and MW-32 remained non-detect
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; nitrate pumping wells TW4-22, TW4-24 and TW4-25; and non-pumping wells MW-
28, TW4-16, TW4-18, TWN-1 , TWN-4 and TWN-20. MW-28 is located downgradient (west) of
the plume; TW4-16, TW4-18, TWN-1 and TWN-20 are located outside the plume near the
plume margins; and TWN-4 is located east of the plume adjacent to a wildlife pond. TW4-16,
TW4-18 and TWN-1 are also located near chloroform and nitrate pumping wells.
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 TW4-16, TW4-18, and TWN-1 because of their locations
just outside of the plume; as well as at MW-28 which is located just outside and generally
downgradient of the plume. In addition, concentrations at TWN-1, TWN-4 and TWN-20 are less
than 3 mg/L.
MW-27, located west of TWN-2; TWN-20, located west of TWN-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-ll.
Nitrate concentrations at MW-5 (adjacent to MW-11) and MW-11 have historically been low(<
1 mg/L) or non-detect for nitrate (See Table 5). The nitrate concentrations at MW-5 (non-detect)
and MW-11 ( < 1 mg/L) are consistent with the relative stability of the downgradient margin of
the plume. MW-25, MW-26, MW-32, TW4-16, TW4-18, TW4-19, TW4-25, TWN-1 and TWN-
4 bound the nitrate plume to the east.
22
Nitrate concentrations outside the nitrate plume are typically greater than 10 mg/L at a few
locations: TW4-26 (12.1 mg/L); TW4-27 (21.1 mg/L); and TW4-28 (10.2 mg/L in the third
quarter of 2019; 8.1 mg/L this quarter). In the past concentrations at TW4-10, TW4-12 and
TW4-38 typically exceeded 10 mg/L. However, TW4-10 dropped below 10 mg/L during the first
quarter of 2019; TW4-12 dropped below 10 mg/Lin the second quarter of 2019 (and is now less
than 3 mg/L); and TW4-38 dropped below 10 mg/L during the first quarter of 2018.
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 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 TW 4-10 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
are within 20% of their respective concentrations during the previous quarter except at
chloroform pumping wells MW-4, TW4-19, TW4-37 and TW4-39; nitrate pumping wells TW4-
24 and TW4-25; and non-pumping TW4-3, TW4-5, TW4-6, TW4-8, TW4-12, TW4-14, TW4-
18, TW4-30 and TW4-33. Concentrations at the above pumping wells increased; whereas
concentrations at the above non-pumping wells decreased. Non-pumping wells TW4-3, TW4-5,
TW4-6, TW4-8, TW4-14, TW4-18 and TW4-33 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.
TWN-7 (located upgradient [north] of the tailings management system) was positioned
historically cross-to downgradient of the upgradient (n01theastern) extremities of the
commingled nitrate and chloride plumes. Recent increases in both nitrate and chloride at TWN-
7, which remains incorporated into both the nitrate and chloride plumes this quarter, likely result
from northwesterly migration of the elevated nitrate and chloride contained within the upgradient
extremities of these commingled plumes. The change in both nitrate and 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 more than 2 times
23
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 11.2 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 3,707 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:
• 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 29 lb. ( or 45 % ) was
removed by the nitrate pumping wells.
The calculated nitrate mass removed directly by pumping 1s smaller than last quarter's
approximately 91 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 TW4-19 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 28,932 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.
24
The nitrate mass estimate for the current quarter (28,932 lb.) is smaller than the mass estimate
for the previous quarter (34,143 lb) by 5,211 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 quaiterly 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
the northern wildlife ponds is expected to result in reduced saturated thicknesses and reduced
dilution, which in turn 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 to plume shrinkage resulting from
decreases in nitrate concentrations at MW-26, TW4-16, TW4-21 and TW4-25; and to a decrease
in the average nitrate concentrations within the plume (especially at TW4-22, which decreased
from approximately 89 mg/L to 25 mg/L).
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.
25
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, TW4-4. 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 pait of this pumping is
calculated and included in the quarterly reports.
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
26
-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 TW4-40 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,
TW 4-40, and TW 4-41 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.
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 C are 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 or pumping equipment which occurred
during the quarter are noted for each well 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
27
There were no corrective actions required during the previous quarter's monitoring period.
7.0 CONCLUSIONS AND RECOMMENDATIONS
As per the CAP, the current quarter is the thirty first quarter that hydraulic capture associated
with nitrate pumping wells TW4-22, TW4-24, TW4-25, and TWN-2 was evaluated. While the
apparent combined capture of the nitrate and chloroform pumping systems has expanded slightly
in some areas and contracted in others, 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
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 1.4 gpm, based on water removed by TW4-22,
TW4-24, TW4-25, and TWN-2, is near 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 2.5 gpm exceeds the high end of the
recalculated 'background' range by approximately 0.83 gpm, or a factor of approximately 1.5.
Including TW4-37 is appropriate because this well has been within the nitrate plume consistently
28
since initiation of pumping in 2015. Including TW4-21 is also appropriate because this well is
again within the plume this quarter.
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 1.5 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; nitrate pumping wells TW4-22, TW4-24 and TW4-25; and non-
pumping wells MW-28, TW4-16, TW4-18, TWN-1, TWN-4 and TWN-20. MW-28 is located
downgradient (west) of the plume; TW4-16, TW4-18, TWN-1 and TWN-20 are located outside
the plume near the plume margins; and TWN-4 is located east of the plume adjacent to a wildlife
pond. TW4-16, TW4-18 and TWN-1 are also located near chloroform and nitrate pumping wells.
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 TW4-16, TW4-18, and TWN-1 because of their locations
just outside of the plume; as well as at MW-28 which is located just outside and generally
downgradient of the plume. In addition, concentrations at TWN-1, TWN-4 and TWN-20 are less
than 3 mg/L.
Concentrations at MW-25, MW-29 and MW-32 remained non-detect. As discussed in Section
4.2.3, the area of the nitrate plume is smaller than last quarter. Specifically, the northern portion
of the plume boundary has contracted away from TW4-25 (due to decreases in concentration at
TW4-21 and TW4-25); and the boundary has contracted away from MW-26 (due to decreases in
concentration at MW-26 and TW4-16). Conversely, an increase in concentration at MW-28
caused the boundary to shift toward MW-28, although MW-28 remains outside the plume.
MW-27, located west ofTWN-2; TWN-20, located west of TWN-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 I-1 under Tab I). In addition, 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(< 1 mg/L) or non-detect for nitrate
( See Table 5). The nitrate concentration at MW-11 of less than 1 mg/L is consistent with the
relative stability of the downgradient margin of the plume. MW-25, MW-26, MW-32, TW4-16,
TW4-18, TW4-25, TWN-1 and TWN-4 bound the nitrate plume to the east.
29
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 at MW-30 and remained about the same at MW-31. Nitrate in MW-30
increased from approximately 17.7 mg/L to 20.6 mg/L; and nitrate in MW-31 increased slightly
18.6 mg/L to 18.7 mg/L. Based on the concentration data at MW-5, MW-11, MW-30, and MW-
31, the nitrate plume is under control.
Chloride is increasing at MW-31 and at MW-30, but at a lower rate. These increases are
consistent with continuing downgradient 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.
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.
30
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 29 lb. ( or 45 % ) 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 (28,932 lb.) is smaller than the mass estimate for the previous quarter (34,143 lb) by
5,211 lb. or approximately 15 %. The current quarter's estimate is smaller than the baseline
estimate by approximately 14,768 lb. The quarterly difference is attributable primarily to plume
shrinkage resulting from decreases in nitrate concentrations at MW-26, TW4-16, TW4-21 and
TW4-25; and to a decrease in the average nitrate concentrations within the plume (especially at
TW4-22, which decreased from approximately 89 mg/L to 25 mg/L). Although the concentration
at bounding well MW-28 increased this quarter, and the plume boundary shifted westward, MW-
28 remains outside the plume.
Nitrate concentrations outside the nitrate plume are typically greater than 10 mg/L at a few
locations: TW4-26 (12.1 mg/L); TW4-27 (21.1 mg/L); and TW4-28 (10.2 mg/L in the third
quarter of 2019; 8.1 mg/L this quarter). In the past concentrations at TW4-10, TW4-12 and
TW4-38 typically exceeded 10 mg/L. However TW4-10 dropped below 10 mg/L during the first
quarter of 2019; TW4-12 dropped below 10 mg/Lin the second quarter of 2019 (and is now less
than 3 mg/L); and TW4-38 dropped below 10 mg/L during the first quarter of 2018. 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. Nitrate concentrations at all of the above wells are within 20% of last
quarter's concentrations.
Since 2010, nitrate concentrations at TW4-10 and TW4-18 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
31
and the generally increased nitrate at TW4-5 and TW4-10 during the three quarters following the
second quarter of 2015 sugge. ted 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 TW4-18 have 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.
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.
32
9.0 SIGNATURE AND CERTIFICATION
This document was prepared by Energy Fuels Resources (USA) Inc.
Energy Fuels Resources (USA) Inc.
By:
Scott A. Bakken
l\\ \ti \1-t
Da~e
Vice President, Regulatory Affairs
33
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.
34
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 ,,· ' r -I -• -•. •. • --= ---~ . .
'" ampfe Ct,llettfon .
·,I\·.•.: Mil\ -Ditte ' Date o; Lab Report
Piezometer 01 8/19/2021 9/10/2021
Piezometer 02 8/19/2021 9/10/2021
Piezometer 03A 8/19/2021 9/10/2021
TWN-01 8/18/2021 9/10/2021
TWN-02 8/1 8t20l'l -'9/10/2021
TWN-03 8/19/2021 9/10/2021
TWN-04 8/18/2021 9/10/2021
TWN-07 8/19/2021 9/10/2021
TWN-18 8/17/2021 9/10/2021
TWN-18R 8/17/2021 9/10/2021
TWN-20 8/19/2021 9/10/2021
TWN-21 8/19/2021 9/10/2021 --TW4-22 8/24/2021 9/13/2021
TW4-24 8l24't2001 9/13/2021
TW4-25 8/24/2021 9/13/2021
TWN-60 8/18/2021 9/10/2021
TW4-60 8/24/2021 9/13/2021
TWN-65 8/17/2021 9/10/2021
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-18
TW4-60 is the chloroform program DI Field Blank.
eon ell.
-:~it: .
.. .. I
Table 2
Nitrate Mass Removal Per Well Per C :)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.)
Q3 2010 3.20 0.3 5.8 1.7 4.7 NA NA NA NA NA NA NA NA NA NA NA NA 15.69
Q4 2010 3.76 0.4 17.3 1.4 5.1 NA NA NA NA NA NA NA NA NA NA NA NA 27.97
Ql 2011 2.93 0.2 64.5 1.4 4.3 NA NA NA NA NA NA NA NA NA NA NA NA 73.30
Q2 2011 3.51 0.1 15.9 2.7 4.7 NA NA NA NA NA NA NA NA NA NA NA NA 27.01
Q3 2011 3.49 0.5 3.5 3.9 5.4 NA NA NA NA NA NA NA NA NA NA NA NA 16.82
Q4 2011 3.82 0.8 6.2 2.5 6.4 NA NA NA NA NA NA NA NA NA NA NA NA 19.71
01 2012 3.62 0.4 0.7 5.0 6.0 NA NA NA NA NA NA NA NA NA NA NA NA 15.86
Q2 2012 3.72 0.6 3.4 2.1 5.2 NA NA NA NA NA NA NA NA NA NA NA NA 15.03
Q3 2012 3.82 0.5 3.6 2.0 4.7 NA NA NA NA NA NA NA NA NA NA NA NA 14.67
Q4 2012 3.16 0.4 5.4 1.8 4.2 NA NA NA NA NA NA NA NA NA NA NA NA 14.92
QI 2013 2.51 0.4 14.1 1.4 3.6 8.1 43.4 7.5 14.8 NA NA NA NA NA NA NA NA 95.73
Q2 2013 2.51 0.4 5.6 1.6 3.4 10.7 37.1 6.4 23.9 NA NA NA NA NA NA NA NA 91.71
Q3 2013 2.97 0.4 48.4 1.4 3.8 6.3 72.8 6.9 33.4 NA NA NA NA NA NA NA NA 176.53
Q4 2013 3.08 0.3 15.8 1.6 3.9 9.4 75.2 6.4 46.3 NA NA NA NA NA NA NA NA 162.07
Ql 2014 2.74 0.4 4.1 1.2 3.6 11.2 60.4 2.3 17.2 NA NA NA NA NA NA NA NA 103.14
Q2 2014 2.45 0.3 3.3 0.9 3.0 9.5 63.4 1.3 17.8 NA NA NA NA NA NA NA NA 101.87
Q3 2014 2.31 0.1 4.1 0.6 3.1 8.5 56.2 1.6 16.4 NA NA NA NA NA NA NA NA 92.99
Q4 2014 2.67 0.2 7.8 1.0 3.8 11.0 53.2 0.9 28.0 NA NA NA NA NA NA NA NA 108.57
QI 2015 3.67 0.5 4.3 1.3 2.4 12.7 26.7 8.6 19.2 1.45 1.07 0.72 NA NA NA NA NA 82.61
Q2 2015 1.28 0.2 0.6 0.9 3.6 9.1 16.6 0.9 21.4 1.22 0.79 0.37 3.4 8.6 NA NA NA 68.86
Q3 2015 3.58 0.3 11.3 1.4 3.5 13.3 14.0 1.7 20.2 1.24 0.68 0.29 15.4 31.9 NA NA NA 118.63
Q4 2015 3.68 0.2 10.0 0.8 3.1 11.1 26.6 1.7 17.5 0.3 0.9 0.3 16.1 32.3 NA NA NA 124.50
QI 2016 3.91 0.23 15.28 1.23 3.21 6.36 24.30 0.81 34.33 0.02 0.93 0.22 15.29 26.45 NA NA NA 132.55
Q2 2016 3.66 0.21 1.3 I 1.48 3.36 12.92 13.17 1.01 19.24 0.02 1.15 0.25 14.46 27.76 NA NA NA 99.98
Q3 2016 3.30 0.22 9.08 1.15 3.02 11.33 14.86 1.56 12.47 0.72 0.59 0.22 15.20 27.42 NA NA NA 101.12
Q4 2016 3.48 0.18 8.76 1.23 1.79 12.14 26.49 1.02 12.14 0.10 1.00 0.23 14.68 22.20 0.62 NA NA 106.06
Ql 2017 3.19 0.17 10.23 1.36 1.35 14.02 34.16 0.02 10.35 0.63 0.79 0.20 8.02 26.16 5.54 NA NA 116.19
Q2 2017 2.94 0.20 0.22 1.02 1.37 13.99 17.58 0.83 8.88 0.87 0.77 0.19 4.85 24.26 2.15 NA NA 80.12
Q3 2017 3.65 0.36 1.05 1.31 1.29 13.56 18.55 1.27 9.31 0.73 0.82 0.18 18.24 20.81 2.23 NA NA 93.37
Q4 2017 4.67 0.23 0.34 1.06 1.32 15.89 28.04 1.26 10.37 0.68 0.47 0.17 17.84 22.35 1.51 NA NA 106.21
QI 2018 3.92 0.35 7.89 1. I 3 1.18 12.47 36.31 2.18 7.09 0.51 0.40 0.17 15.54 21.22 1.65 NA NA 111.99
Q22018 3.94 0.20 0.46 l.l6 0.96 14.07 14.89 l.12 7.22 0.40 0.47 0.16 13.73 19.96 1.38 NA 4.02 84.14
Q3 2018 3.63 0.60 2.25 0.85 0.78 9.82 14.99 0.75 6.48 0.35 0.60 0.13 0.22 16.42 1.69 NA 2.30 61.86
Q4 2018 3.81 0.39 0.21 1.04 0.77 15.27 32.56 0.61 6.30 0.38 0.45 0.14 15.43 17.38 1.97 NA 1.78 98.49
Ql 2019 4.71 0.41 6.38 0.82 1.01 15.69 32.04 0.48 7.10 0.40 0.53 0.15 9.25 19.49 0.85 NA 1.79 101.08
Q2 2019 4.07 0.57 7.53 1.08 1.24 16.15 14.74 0.60 16.35 0.11 0.51 0.15 15.61 16.91 2.42 2.4 1.26 101.72
Q3 2019 3.74 0.62 0.28 l.17 0.77 14.95 16.54 0.40 8.01 0.13 0.56 0.12 13.26 14.55 0.54 3.3 1.25 80.19
Q4 2019 3.59 0.18 0.44 0.68 0.78 12.02 28.83 0.60 5.17 0.30 0.40 0.12 5.55 14.20 0.41 2.6 1.08 76.97
QI 2020 5.33 0.24 8.16 0.78 0.55 11.91 26.73 0.43 4.44 0.38 0.67 0.11 7.95 15.48 0.29 2.5 0.88 86.86
Q2 2020 4.28 0.62 1.30 6.08 0.93 12.77 20.05 0.64 4.04 0.04 0.43 0.13 14.26 15.39 1.56 2.4 0.98 85.95
Q3 2020 3.48 0.08 14.96 0.00 0.85 12.46 17.40 0.70 3.05 0.18 0.39 0.11 10.46 13.95 0.80 2.1 0.75 81.69
Q4 2020 3.52 0.87 1.33 0.00 0.85 12.38 31.15 l.18 2.57 0.33 0.28 0.08 14.56 14.69 2.75 1.7 0.93 89.15
QI 2021 3.60 0.08 7.36 0.00 0.77 13.13 28.63 2.30 3.00 0.21 0.36 0.13 12.33 13.45 0.69 1.5 0.72 88.22
Quarter
_Q_2 2021
_Q_3 2021
Well
Totals
(pounds)
MW~
(II,>~.)
5.04
2.87
156.8
Table 2
Nitrate Mass Removal Per Well Per _Quarter
MW-26 I TW4-19 I TW4-2.<t I TW44 I TIV4-~ , TW4-,24
(J~) (lbs.) (Jb~) ,W>,s.) (1,h_s.) (11>il) nv,4-251 TWN-02'•1 TW~Ol I TW4-02 I TW4-11 I TW4-21 I TW4-37 I TW4-39 I TW4-40 I TW4-41 ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
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
0.16 8.79 0.00 0.40 6.52 11.88 0.55 9.89 0.10 0.21 0.08 10.05 10.76 0.71 0.7 0.43
15.5 374.4 63.4 121.0 417.8 1071.2 67.7 486.4 11.8 16.7 5.2 319.0 507.0 33.0 21.4 19.0
Qtr,
ToCals
(lbs.),
91.09
64.14
3707.30
Table 3 Well Pumping Rates and Volumes
Pumping Well Volume of Water Pumped
Name During the Quarter (gals) Average Pump Rate (gpm)
MW-4 89693.5 4.0
MW-26 27945.6 16.1
TW4-19 157632.4 15.8
TW4-4 12021.0 16.3
TWN-2 21030.8 16.0
TW4-22 22272.5 16.3
TW4-24 53333.1 16.0
TW4-25 82802.3 10.5
TW4-01 8677.2 12.8
TW4-02 12694.5 16.0
TW4-ll 1560.8 14.4
TW4-21 93390.4 16.4
TW4-37 49987.5 18.0
TW4-39 31436.6 18.0
TW4-40 58841.0 18.0
TW4-41 13821.0 5.9
Table 4
Table 4 Quarterly Calculation of Nitrate Removed and Total Volume of Water Pumped
C MW-4 ---•• -r ---.. -MW-26 I
Total Total
Total 7 Pumped Total Pumped Total Total Total Pumped Cone Cone Pumped Total
Quarter (gal) Conc(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.S 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.S 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.S 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.S 1733662475 1733.7 3.82 25246.0 2.60 2600 95556.1 248445886 248 0.55
Q4 2012 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
Q3 2013 72898.8 4.89 4890 275922.0 1349258375 1349.3 2.97 25763.0 1.98 1980 97513.0 193075650.9 193 0.43
Q4 2013 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
Q2 2014 71934.9 4.08 4080 272273.6 1110876274 1110.9 2.45 23757.S 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
Q4 2014 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.S 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
Q4 2015 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.S 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.S 162 0.36
Q42017 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.S 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.S 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
Q42019 99220.8 4.34 4340 375550.9 1629890816.6 1629.9 3.59 22384.8 0.977 977 84726.S 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
Table4
Table 4 Quarterly Calculation of Nitrate Removed and Total Volume of Water Pumped
-.. ~ ------MW-<i •-r--MW~26 --Total ' Total C I ell(tlped Total P-umped Total Total Tl_?talPumped Gone Cone· Pun;iped Total Total
ij:,.iat_ter (9lll) •Conc(mg/1.,) Co~b!~)· (ltters1 " Tofl!I (llQ) (gr@m~) (pqu~) (~I) {mg/L) (ug/1.) . .(lite.)'s) Total l1!9) {gra'fn~j . @uric!!!)·
Q2 2020 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
Q3 2021 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
Totals Since
Q3 2010 3908683.11 156.8 1318489.62 15.5
Table4
Table 4 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) I 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
Q4 2010 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
Q4 2011 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
Ql 2013 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
Q4 2014 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 10.6 10600 426825.7 4524352892 4524 9.97 15547.4 6.23 6230 58846.9 366616243.1 367 0.81
Ql 2016 116597.0 15.7 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 10.5 10500 392160.1 4117680683 4118 9.08 12186.6 11.30 11300 46126.3 521226975.3 521 1.15
Q4 2016 104919.4 10.0 10000 397119.9 3971199290 3971 8.76 12879.6 11.40 11400 48749.3 555741860.4 556 1.23
Q1 2017 110416.7 11.1 11100 417927.2 4638992025 4639 10.23 13552.8 12.00 12000 51297.3 615568176 616 1.36
Q2 2017 109943.0 0.243 243 416134.3 101120624 101 0.22 12475.3 9.76 9760 47219.0 460857542.S 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
Q4 2017 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.S 1021365558.2 1021 2.25 12443.6 8.14 8140 47099.0 383385 763.S 383 0.85
Q4 2018 107197.4 0.233 233 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 0.332 332 382386.4 126952297.4 127 0.28 13787.0 10.20 10200 52183.8 532274709.0 532 1.17
Q4 2019 98806.8 0.535 535 373983.7 200081299.8 200 0.44 8317.7 9.75 9750 31482.5 306953952.3 307 0.68
Q1 2020 96857.9 10.1 10100 366607.2 3702732230.2 3703 8.16 9505.1 9.81 9810 35976.6 352930585.8 353 0.78
Table4
Table 4 Quarterly Calculation of Nitrate Removed and Total Volume of Water Pumped
--TW4-~ TW4-20
' ----·-Total s. --
'l"Gt~~ eo:n:c. e<fflO I Prl'tnRtd t-,. TotalPum~ Cone C::onc Total Purnped Totd j
~~IW i(g~I) J .f+1. ·~. O~'r~) ~(ug) , (g'rami;) ,(poun$) (gal) (mg/L) (uglL) ,(llt!irs) I To!al (U,9) ~ta• .<srams> (pgu~}
Q2 2020 136619.7 1.1 1140 517105.6 589500343.5 590 1.30 100713.8 7.23 7230 381201.6 2756087708.6 2756 6.08
Q3 2020 154514.4 11.6 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
Q1 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
Totals Since
Q3 2010 7799240.33 374.4 1018583.08 63.4
Table4
Quarterly Calculation of Nitrate Removed and Total Volume of Water Pumped
TW4-4 TW4-22 ---~
Total . ,otal '
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
Q4 2010 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.S 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 222243.1 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 1564345874.7 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 1735 729796.6 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
Q4 2014 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.S 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
Q4 2017 22900.6 6.90 6900 86678.8 598083519.9 598.08 1.32 23779.6 80.1 80100.0 90005.8 7209463458.6 7209.S 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.S 435231775.3 435.23 0.96 23256.6 72.S 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
Q4 2018 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.S 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
Q4 2019 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 TW§-22 ·-. -·· ·--·-·
Tolal To.tat -
Pumped <::one Cone totall'umped Total Total Pumpecl Coric Cone T~talPum~ Total Total
~rtor (gal) (mQ/1.,1) .. ,(u9'1-) (litai's) 1"9!!11 (ug). (grams) (pounds) (g\l) ' (mg/I.) (!Jg/I,,) (!i,!:ers) Totill'(ug) (gr~nw. (poui,$1
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
Q4 2020 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
Q3 2021 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
Totals Since
Q3 2010 2119021.70 121.0 830860.2 417.8
Table4
Quarterly Calculation of Nitrate Removed and Total Volume of Water Pumped
. TW4-24 ~ ---· --TW4-ZS -· 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
Q4 2010 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
Q4 2011 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
Q4 2013 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
Q4 2014 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 17.0 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 0.976 976 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 0.810 810 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 0.634 634 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 0.639 639 343638.1 219584 725.6 219.6 0.48
Q2 2019 53197.3 33.2 33200 201351.9 6684881625.8 6684.9 14.74 88302.0 0.821 821 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 0.548 548 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 0.841 841 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 0.607 607 321912.2 195400732.1 195.4 0.43
Table4
Quarterly Calculation of Nitrate Removed and Total Volume of Water Pumped
-TW4-24 " .. TW4-25 --
' ,O:To!al ,otal
lh1mpea eone, ~ 'rQ~I Fuh'!f(~ "FQtaJ T"Qj)31 Total Puinped Cone Cone PWnped Total Total
.9ualt,~ ~lj -<r:!!.91'4 (ug/1,,) (lite~)' l'o~1. (!lg) Gg_'ra,m.~} (po~~ '(~I) , :(nm?L) (ug/L) (tit¢;) Tot,al (ug) (g~ril~) (pouoc!s)
Q2 2020 57634.7 41.7 41700 218147.3 9096744057.2 9096.7 20.05 90767.9 0.851 851 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 0.994 994 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
Q3 2021 53333.1 26.7 26700 201865.8 5389817 430.0 5389.8 11.88 82802.3 0.79 793 313406.8 248531607.5 248.5 0.55
Totals Since
Q3 2010 3761319.7 1071.2 3597674.87 67.7
Table 4
Quarterly Calculation of Nitrate Removed and Total Volume of Water Pumped
TWN--02 TW4-01
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 NA NA NA NA NA NA NA NA NA NA NA NA NA NA
Q4 2010 NA NA NA NA NA NA NA NA NA NA NA NA 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
Q4 2011 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
Q4 2014 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 6.3 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 10231504.5 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
Q4 2016 44640.6 32.6 32600 168964.7 5508248274.6 5508.2 12.14 16756.8 0.75 746 63424.S 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
Q4 2019 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
Ql 2020 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
Table 4
Quarterly Calculation of Nitrate Removed and Total Volume of Water Pumped
'IWr.1-'Q.2 TW4-0l
Total Total
Pumped Cone ~nc r~ P-umP-8(i Total Toral Pumped Cone Cone t otal, Pumped Total -Total
'Quivter. (gl_l) (rilglL) .(1;!911-l ~{lit_jirs) To~tu9> (g'fimsJ (piju~) (001)' (rii~) Jug/L) (li(eii> 1'.9tal (ug) ' (g~~) (~ww;ti-)
Q2 2020 30078.9 16.1 16100 113848.6 1832963047.7 1833.0 4.04 9600.2 0.443 443 36336.8 16097183.4 16.1 0.04
Q3 2020 21279.1 17.2 17200 80541.4 1385311968.2 1385.3 3.05 9487.3 2.22 2220 35909.4 79718935.7 79.7 0.18
Q4 2020 25682.1 12.0 12000 97206.7 1166480982.0 1166.5 2.57 9318.7 4.30 4300 35271.3 151666501.9 151.7 0.33
Ql 2021 23310.5 15.4 15400 88230.2 1358745734.5 1358.7 3.00 9066.4 2.72 2720 34316.3 93340401.3 93.3 0.21
Q2 2021 22717.2 13.8 13800 85984.6 1186587507.6 1186.6 2.62 8764.1 0.728 728 33172.1 24149302.3 24.1 0.05
Q3 2021 20130.8 58.9 58900 76195.0 4487885635.S 4487.9 9.89 86n.2 1.380 1380 32843.2 45323618.8 45.3 0_10
Totals Since
Q3 2010 1427434.3 486.4 377335.90 11.8
Table4
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
Q4 2011 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
Q4 2013 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
Q4 2014 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.S 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 34 7129276.6 347.1 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
Q1 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
Table 4
Quarterly Calculation of Nitrate Removed and Total Volume of Water Pumped
-TW~2 ·TW4-U ---~ --r~r_ -Total Total
P,_J}mp:81\1 ~11~ Gaile T~1.P.1;1,m.~i Total T9~I ~>Umped Cone .,~,..s Pum~ Total Total
. J)uarter '(,gal) (mg/L) ~ug/1.) (liters) Total (ugI (9!8fflS) (pounds) _(~al) (mg/L) (f.l!J/1:) (i~rs) Total (!,19) (gram_s)" (po,und_s)
Q2 2020 14155.6 3.62 3620 53578.9 193955784.S 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
Q3 2021 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
Totals Since
Q3 2010 458429.20 16.7 78332.08 5.2
Table 4
Quarterly Calculation of Nitrate Removed and Total Volume of Water Pumped
-
~ TW4-21 -TW4-37
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 NA NA NA NA NA NA NA NA NA NA NA NA NA NA
Q4 2010 NA NA NA NA NA NA NA NA NA NA NA NA 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
Q4 2011 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
Q4 2013 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
Q4 2014 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 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
Q2 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.S 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
Ql 2017 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
Q2 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
Q4 2017 126492.S 16.9 16900 478774.1 8091282501.3 8091.3 17.84 87529.6 30.6 30600 331299.S 10137765801.6 10137.8 22.35
Ql 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.S 6227.1 13.73 83653.1 28.6 28600 316627.0 9055531728.1 9055.S 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
Q4 2018 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
Ql 2019 123264.1 8.99 8990 466554.S 4194325339.8 4194.3 9.25 77591.4 30.1 30100 293683.4 8839871814.9 8839.9 19.49
Q2 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.S 25500 252582.1 6440844417.0 6440.8 14.20
Ql 2020 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
Table 4
Quarterly Calculation of Nitrate Removed and Total Volume of Water Pumped
-'IW4-21 TW4e37
Totill --Total
Puri!~ Cone, Cone Total Pumpe{I Total TotaJ,, Pumped Cone Cone Total Pumped Total Total
~~i (gal) (in~) (ug/L) ·<ilf11rs) -Total (u~) {~nis) (POl/!l<ffl) (g~I) (m~), (ug/L) (lltfil® Total {ug) (arar,,st (IJ,O~S)
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
Q4 2020 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.S 7906442594.0 7906.4 17.43 58564.2 26.6 26600 221665.5 5896302220.2 5896.3 13.00
Q3 2021 93390.4 12.9 12900 353482.7 4559926365.6 4559.9 10.05 49987.S 25.8 25800 189202.7 4881429337.5 4881.4 10.76
Totals Since
Q3 2010 2783786.8 319.0 2065866.0 507.0
Table 4
Quarterly Calculation of Nitrate Removed and Total Volume of Water Pumped
TW4-39 -TW4-40 ---· ~Total" Total Tofal ' -.otal
Pumped Cone Cone Pumped 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
Q4 2010 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
Q4 2011 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
Q4 2013 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
Q4 2014 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
Q4 2017 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
Q2 2018 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 894974620.1 895.0 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 118445 7696.0 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
Q~r
Q2 2020
Q3 2020
Q42020
Ql 2021
Q2 2021
Q3 2021
Totals Since
Tl:ital
p~~
(p)
37352.7
35628.2
46794.2
38932.4
32865.2
31436.6
Q3 2010 853111.60
Cone
<!"gill
5.01
2.69
7.03
2.12
12.0
2.70
Cone
(uglL)
5010
2690
7030
2120
12000
2700
,w,s.."39
To~I
Pumpe<I
Qitei's)
141380.0
134852.7
177116.0
147359.1
124394.8
118987.5
Table4
Quarterly Calculation of Nitrate Removed and Total Volume of Water Pumped
TQ~l(u~t
708313647.2
362753862.5
1245125810.4
312401364.1
1492737384.0
321266333.7
Total
{s,:ams)
708.3
362.8
1245.1
312.4
1492.7
321.3
Total
.(pounds)
1.56
0.80
2.75
0.69
3.29
0.71
33.0
T{ltal
Pu111J)l!d
,(gal)
100757.1
86264.5
77535.9
72543.4
66866.4
58841.0
871288.7
C;pilc ,(m,9{L)I Cone (ug/\,)
2.91 2910.0
2.88 2880.0
2.58 2580.0
2.43 2430.0
3.77 3770.0
1.50 1500.0
TW4<40
,otal
Pumped
(l~rs)
381365.7
326511.1
Total (1,19)
1109774294.8
940352061.6
293473.5 I 757161617.2
274576.7 I 667221272.7
253089.3 I 954146751.5
222713.1 I 334069664.0
T.gtal (gram_!_)
1109.8
940.4
757.2
667.2
954.1
334.1
Total
(ppunds}
2.4
2.1
1.7
1.5
2.1
0.7
21.4
Table4
Quarterly Calculation of Nitrate Removed and Total Volume of Water Pumped
.. rw~ ----. -
"fojal ~ -~ ~-r' -;r ---" •,~i~·
T9~IP-~ !.ie®-C11nc ~!,in'!~ 'f'~I 'ffltal (>y~'fl
~~e..r {Q!l) (mgltj (ug/1.) (I~. 'Total (l,ig) . <g'i:!m~f (po~) . wen, ~ . .,.. .........
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
Q42014 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
Q42015 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
Q42016 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
Q42017 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
Q42018 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
Q42019 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
TWW1
Total Removed
!Total P11mped Cone .Cone Pumped Total Td~I by,AII
Quarter (gal) z (mg/I.) <11~>. (liters) Total(~) J~rams) (P,OUndS) wen.a
Q2 2020 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
Q4 2020 17765.7 6.25 6250 67243.3 420270313.8 420.3 0.93 89.15
Q1 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 64.14
Totals Since
Q3 2010 362565.43 19.0 3707.30
Table 5
Nitrate Date Over Time for MW-30, MW-31, MW-5, and MW-11
-Date MW~30
Qf22~llO
Q3 20,10
Q42010
Q'l 2011
Q~2Q,II
QJ.~01. l
~ii:2011
Qt Q~Ml
1, Q122.012
~i-2012
11 Q~i:0L2
~I 20,13
Q2 2013
QB~io13
C:,2_'4-201-3
QI f2©]4
~2014
Q3'20.J~
Q~20.1a
Qi 2©'15
--~2 2OtS
Q320l.S
~~20:15
Q1WJI§
Q2i2QJt6
Q'3 2f)'lr6),
Q42Q)§
QI 2,(!)Hl
Qi"Q0l7
Q3,,20\7
QacQOJ9
Ql 201'8
Q2@018
Q3;201·8
~20t'8
QI 2Pl9
Q220:t9
Q30019
Q42oa9
\>,QI 202,0
Q'2 '2-020
(Q3 2020
_Q'4 ip20
Q4 io121
Q2 202r
,Q3'.2021
ND= Not detected
NS = Not Sampled
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
M~-3,1 MW-5 MW-II
22.5 ND ND
21 NS ND
20 0.2 ND
21 NS ND
22 0.2 ND
21 NS ND
21 0.2 ND
21 NS ND
20 0.1 ND
21 NS ND
23.6 ND ND
19.3 NS ND
23.8 ND ND
21.7 NS ND
23.9 0.279 ND
20.6 NS ND
23.1 ND ND
18.9 NS ND
20.9 0.21 ND
18.7 NS ND
19.0 0.142 ND
19.9 NS ND
18.4 0.118 ND
18.8 NS ND
18.6 0.156 0.117
19.7 NS ND
18.8 0.241 ND
21.1 NS ND
18.3 0.133 ND
19.5 NS ND
19.2 0.337 ND
18.8 NS ND
19.0 0.216 ND
20.1 NS ND
18.3 0.309 ND
19.0 NS ND
19.7 0.260 ND
19.8 NS 0.558
19.8 0.235 0.160
17.5 NS 0.308
18.8 0.142 0.297
19.2 NS 0.651
18.6 0.191 0.933
17.1 NS 1.21
18.6 <0.100 0.948
18.7 NS 0.924
TABLE 6
Slug Test Results
(Using KGS Solution and Automatically Logged Data)
Well K
lcm/s)
MW-30 1.0E-04
MW-31 7.1 E-05
TW4-22 1.3E-04
TW4-24 1.6E-04
TW4-25 5.8E-05
TWN-2 1.5E-05
TWN-3 8.6E-06
Average 1
Average2
Average 3
Average4
Notes:
Average 1 = arithemetic average of all wells
Average 2 = geometric average of all wells
K
(ft/dav)
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 TM.
S:\Environmental\UT\WhiteMesaMill\Required Reports\Nitrate Quarterly Report\2021 Q3\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\UnWhiteMesaMill\Required Reports\Nitrate Quarterly Report\2021 O3\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\2021 Q3\FlowCalcs -Tables 6-7-8.xls: Table 8
Table 9
*Recalculated Background Flow
Background *Recalculated
Flow Background Flow
(gpm) (aoml
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
Pf!,10 •
M~
TW4-43 temporary perched monitoring well M installed September, 2021
TWN-20 temporary perched nitrate monitoring C well installed April, 2021
MW-24A perched monitoring well installed • December 2019
TW4-42
¢ temporary perched monitoring well
installed April 2019
TW4-40 perched chloroform pumping well EB installed February 2018
TW4-19 perched chloroform or EB nitrate pumping well
MW-38
-<:>-perched monitoring well installed
February 2018
MW-5 • perched monitoring well
TW4-12
0 temporary perched monitoring well
TWN-7 temporary perched nitrate monitoring ◊ well
PIEZ-1 perched piezometer Q
RUIN SPRING
6 seep or spring -
Of.fl11·
Q
M•t2 •
• f,IW~
• li!W-41
0 ~
~t1s
..
J1'1•1~,
0 'IWN-16
0 "IWIMO
•·
0 TWN-11
0 1WN•H
0 TV'(,1,06
0 'I\IIN-119
~ TWN-08
• PIEZo01
~l,s
~~~-07 ~8
~1
Cell 1
-~$
• MW-29 •
.. MY{'-,'!O
1)8:1~ . • MW•17
-~
~'' 'n, O' ;~,ndiit.L~ite
L i.'w • ,I
'TW~-0
I
TW~'18 _
''i<•·-~~-.4-3 .. _QS . I ,"IIN4-38 1W · ,, , . ·c · ·2r4,12 111w-~, ff la)' o
• MW.;Jl
~l~'I'~ TW-4-221
f;mi•11 1}"4-13 .?-~~,04
~~~C36 -~ ·, .... ::f,.;,j';:;;m,'fl:
. , • ~•~.ilrw~4-14
· '• TW4~ ~~'-3I •-... w "tw44i O ,o;·
rH4-3
I~ ,_..,~:---:-• Q,
.
PIS-OS
MJ~
Oll-15 .
1 nUle
HYDRO
GEO
CHEM,INC.
~ ·'1.ti
:E w
0 MW.:18
0
MW-39
WHITE MESA SITE PLAN SHOWING LOCATIONS OF
PERCHED WELLS AND PIEZOMETERS
APPROVED DATE REFERENCE
H:/718000/nov21/Uwelloc0921,srf
FIGURA-1
TabB
Order of Sampling and Field Data Worksheets
Name
TWN-18
TWN-21
TWN-04
'TWN-20
TWN-01
TWN-02
'TWN-07 .
TWN-03
Duplicate of 11'
DISample .;.O
Plez-0 2
Piez-01
Nitrate
Mg/L
Previous
(lrt.
0.22
1.03
1.7
1.88
3.18
13.8
16.40
25.0
ND
7.89
Piez -03A 14.4
Nitrate Samples
Date/Purge sample
i/11/'Z.I 7
i/11/'l.l O'f17
(/18/Z.I 0'71~
Nitrate Order
3rd Quarter 2021
Depth Total Depth
145
108.65
125.7
98.2
112.5
96
105
96
Rlnsate Samples
Name Date Sample
TWN-II R.. ... I g,.._J_i-t..;...:,1,?-=''--'---"r,=--ga...;'45=--'
Groundwater Discharge Permit ···=-·~ .-~~y~
White Mesa Mill
Field Data Worksheet For Groundwater
Groundwater Monitoring Quality Assurance Plan
Location ID PIEZ-01 Sampling Program Nitrate Quarterly
Field Sample ID Piez-01 08192021 Sampling Event 2021 Q3 Nitrate
Purge Date & Time 8/19/2021 9:45
Sample Date & Time 8/19/2021 9:48 jsampler TH/DL
Purging Equipment Bailer Weather Conditions Cloudy
Pump Type Grundfos External Ambient Temperature (C) 18
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) 67.13
Conductivity Dissolved
Date/Time Gallons Purged (umhos/cm) pH (pH Units) Temp (deg C) Redox (mV) Turbidity (NTU) Oxygen(%) Before/After
8/19/2021 9:48 2309 7.26 15.75 499 101.0 68.0
Pumping Rate Calculations
!volume of water purged Q Flow Rate (Q = S/60} ()
Time to evacuate 2 Casing Volumes () I Final Depth to Water {feet) 68.05 Number of casing Volumes
Volume, if well evacuated to dryness () 0
Name of Certified Analytical Laboratory
AWSL
Analytical Saniples 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 0941 . Samples bailed and collected at 0948. Water was murky. Left site at 0958.
Signature of Field Technician
~Gv..,,.._,..__.-1?"' ... ~
Groundwater Discharge Permit -~-__ ,' )-
' -e: s-, :a / CI-EhGY,q_ ''
Groundwater Monitoring Quality Assurance Plan
White Mesa Mill
Field Data Worksheet For Groundwater
Location ID PIEZ-02 Sam_eling Program Nitrate Quarterly
Field Sample ID Piez-02 08192021 Sampling Event 2021 Q3 Nitrate
Purge Date & Time 8/19/2021 9:29
Sample Date & Time 8/19/2021 9:35 !sampler TH/DL
Purging Equipment Bailer Weather Conditions Cloudy
Pump Type Grundfos External Ambient Temperature (C) 18
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) 46.03
Conductivity Dissolved
Date/Time Gallons Purged (umhos/cm) pH (pH Units) Temp (deg C) Redox (mV) Turbidity (NTU) Oxygen(%) Before/After
8/19/2021 9:34 926.0 7.40 15.64 494 1.5 22.3
!volu_me o_!_ wate_!_purged ()
Pump_ing Rate Calculations
Flow Rate (0 = S/60) ()
Time to evacuate 2 Casing Volumes () I Final Depth to Water (feet) 46.98 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 HOPE u H2SO4 (pH<2), 4 Deg C y
Comments:
[ Arrived on site at 0929. Samples bailed and collected at 0935. Water was clear. Left site at 0939.
Signature of Field Technician
~~-r-,r,n:,,G.~
Groundwater Discharge Permit
eF-::·r ' Y : .. /.• . ~ r '--·-}--.. -/ £7--£.W,t., y~,ep: S-
, .• ..IJ
Groundwater Monitoring Quality Assurance Plan
White Mesa Mill
Field Data Worksheet For Groundwater
Location ID PIEZ-03A Sampling Program Nitrate Quarterly
Field Sample ID Piez-03A 08192021 Sampling Event 2021 Q3 Nitrate
Purge Date & Time 8/19/202110:05
Sample Date & Time 8/19/202110:12 [sampler TH/DL
Purging Equipment Bailer Weather Conditions Cloudy
Pump Type Grundfos External Ambient Temperature (C) 18
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} 57.13
Conductivity Dissolved
Date/Time Gallons Purged (umhos/cm) pH (pH Units) Temp (deg C) Redox (mV) Turbidity {NTU) Oxygen{%) Before/After
8/19/202110:12 1173 7.33 15.92 489 10.4 100.0
Pumping Rate Calculations
[volume of water purged O Flow Rate •(Q = S/60) ()
Time to evacuate 2 Casing Volumes ()
[ Final Depth to Water (feet) 58.45 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 1004. Samples bailed and collected at 1012. Water was a little murky. Left site at 1016.
Signature of Field Technician
~=~--
Groundwater Discharge Permit ·~e .......... ~:,Wf:::.1-.. -j
' /··~' ·--.-...-
. -~.,.~·~ / ~y~
Groundwater Monitoring Quality Assurance Plan
:S
White Mesa Mill
Field Data Worksheet For Groundwater
Location ID TWN-01 Samp_li_ng Pl'_ogram Nitrate Quarterly
Field Sample ID TWN-01 08182021 Sampling Event 2021 Q3 Nitrate
Purge Date & Time 8/18/202110:11
Sample Date & Time 8/18/202110:16 !sampler TH/DL
Purging Equipment Pump Weather Conditions Partly cloudy
Pump Type Grundfos External Ambient Temperature (C) 22
Purging Method 2 Casings Previous Well Sampled TWN-20
Casing Volume (gal) 24.16
Calculated Casing Volumes Purge Duration (min) 4.39
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) 69.13
Conductivity Dissolved
DateITime Gallons Purged (gal) (umhos/cm) pH (pH Units) Temp(deg C) Redox (mV) Turbidity (NTU) Oxygen(%) Before/After
8/18/202110:13 22.00 917.0 7.10 15.78 507 2.1 41.5
8/18/2021 10:14 33.00 915.0 7.14 15.74 505 1.9 43.1
8/18/2021 10:15 44.00 907.0 7.18 15.71 504 2.0 44.0
8/18/202110:16 55.00 901.0 7.20 15.65 502 2.0 45.0
I Volume of water purged (gal~)
Pume_ing 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) 101.35 Number of casing Volumes 2.00
Volume, if well evacuated to dryness () 0
Name of Certified Anal}'tica_l_Labo~tory_
AWSL
Analytical S~mples 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:
[ Arrive_c!_9n site ci_t 1007. Purge began~t 10_!_1. Purged well f~ a total of 5_minu~s. PtJ_rge ended and samples collected at 1016. Water was clear. Left site at 1019.
Signature of Field Technician
-2)=~_.,c_-hi~
-~, ·=-.'·~. 'j' .'
Location ID
Field Sample ID
Purge Date & Time
Sample Date & Time
Purging Equipment
Pump Type
Purging Method
Casing Volume (gal)
Calculated Casing Volumes Purge Duration O
pH Buffer 7.0
pH Buffer 4.0
Specific Conductance (micromhos)
Date/Time Gallons Purged
8/18/202110:25
@:olume ~f water purge_cl ()
I Final Depth to Water (feet)
Name of Certified Analytical Laboratory
AWSL
Analytical Samples Information
Type of Sample/Analysis
Chloride
Nitrate/nitrite as N
Comments:
Groundwater Discharge Permit
Groundwater Monitoring Quality Assurance Plan
White Mesa Mill
Field Data Worksheet For Groundwater
TWN-02 Sampling Program Nitrate Quarterly_
TWN-02 08182021 Sampling_ Event 2021 Q3 Nitrate
8/18/202110:24
8/18/202110:25 !sampler TH/DL
Pump Weather Conditions Partly cloudy
Grundfos External Ambient Temperature (C) 22
2 Casings Previous Well Sampled TWN-01
11.70
7.0 Well Depth (ft) 95.90
4.0 Well Casing Diameter (in) 4
1000 Depth to Water Before Purging (ft) 77.97
Conductivity Dissolved
(umhos/cm) pH (pH Units) Temp (deg C) Redox (mV) Turbidity (NTU) Oxygen(%) Before/After
2027 7.00 16.55 495 0 93.0
Pumping Rate Calculations
Flow Rate (Q = S/60) (gal/min) 16.00
Time to evacuate 2 Casing Volumes ()
87.28 Number of casing Volumes
Volume, if well evacuated to dryness () 0
Sample Container Preservative
Collected? Matrix Number Type Sample Filtered? Type Added?
y WATER 1 500-ml Poly u None N
y WATER 1 250-ml HOPE u H2SO4 (pH<2), 4 Deg C y
I Ar~ived on_ site at 1_021. Samples collected at 1025. Water was clear. Left site at 1027.
Signature of Field Technician
~~.?V'~
Groundwater Discharge Permit
~ --..
' , . --ZS ---e· :t. ~y,=: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 08192021 Sampling Event 2021 Q3 Nitrate
Purge Date & Time 8/18/202112:10
Sample Date & Time 8/19/2021 9:22 jsampler TH/DL
Purging Equipment Pump Weather Conditions Partly cloudy
Pump Type Grundfos External Ambient Temperature (C) 23
Purging Method 2 Casings Previous Well Sampled TWN-07
Casing Volume (gal) 34.81
Calculated Casing Volumes Purge Duration (min) 6.33
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) 42.68
Conductivity Dissolved
Date/Time Gallons Purged (gal) (umhos/cm) pH (pH Units) Temp (deg C) Redox (mV) Turbidity (NTU) Oxygen(%) Before/After
8/18/202112:14 44.00 2355 7.09 15.42 493 2.6 37.3
8/19/2021 9:22 2287 7.34 15.33 Before
8/19/2021 9:23 2278 7.31 15.37 After
Pumping Rate Calculations
[Vc:>.h.1_me of water purged (gals) 44.00 Flow Rate (Q = S/60) (gal/min) 11.00
Time to evacuate 2 Casing Volumes (min) 4.00
[Final Depth to Water (feet) 93.54 Number of casing Volumes 1.26
Volume, if well evacuated to dryness (gals) 44.00
Name of Certified Analytical Laboratory
AWSL
Analytical Sc:1rnples 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 1207. Purge began at 1210. Purged well for a total of 4 minutes. Purged well dry. Purge ended at 1214. Water was clear. Left site at 1217. Arrived on site at 0919. Depth to
water was 43.55. Samples bailed and collected at 0922. Left site at 0924.
Signature of Field Technician
..:3~M~
Groundwater Discharge Permit ,~ .. ~~~
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 08182021 Samellng Event 2021 Q3 Nitrate
Purge Date & Time 8/18/2021 9:09
Sample Date & Time 8/18/2021 9:19 [sampler TH/DL
Purging Equipment Pump Weather Conditions Partly cloudy
Pump Type Grundfos External Ambient Temperature (C) 22
Purging Method 2 Casings Previous Well Sampled TWN-21
Casing Volume (gal) 42.00
Calculated Casing Volumes Purge Duration (min) 7.63
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) 62.08
Conductivity Dissolved
Date/Time Gallons Purged (gal) (umhos/cm) pH (pH Units) Temp (deg C) Redox (mV) Turbidity (NTU) Oxygen(%) Before/After
8/18/2021 9:16 77.00 1048 7.05 14.91 522 0 74.1
8/18/2021 9:17 88.00 1045 7.08 14.93 521 0 72.8
8/18/2021 9:18 99.00 1042 7.11 14.93 520 0 71.8
8/18/20219:19 110.00 1040 7.13 14.91 520 0 71.l
Pumping Rate Calculations
[volume_ of w__13ter e_llrgeci_(gals_} 110.00 Flow Rate (Q = S/60) (gal/min) 11.00
Time to evacuate 2 Casing Volumes (min) 10.00
[ Final Depth to Water (feet) 65.31 Number of casing Volumes 2.00
Volume, if well evacuated to dryness () 0
Name of Certified Anal~cal t__aboratory
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: I Arrived on site at 0905._Purg_E?_ beg~n at ()_909. i=>urgecl_ well _!9r a tC>tal of_1_ 0 minute~urg_e ended and samples collected at 0919. Water was clear. Left site at 0922.
Signature of Field Technician
~<-~-17"~
Groundwater Discharge Permit
-~
.--., .-~ . .-
~-~ /
-· / -.•· ~y~
Groundwater Monitoring Quality Assurance Plan
White Mesa Mill
Field Data Worksheet For Groundwater
Location ID TWN-07 Samel_ing_ Program Nitrate Quarterly
Field Sample ID TWN-07 08192021 Sampling Event 2021 Q3 Nitrate
Purge Date & Time 8/18/202110:56
Sample Date & Time 8/19/2021 9:13 [sampler TH/DL
Purging Equipment Pump Weather Conditions Partly cloudy
Pump Type Grundfos External Ambient Temperature (C) 23
Purging Method 2 Casings Previous Well Sampled TWN-02
Casing Volume (gal) 17.49
Calculated Casing Volumes Purge Duration (min) 3.18
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) 80.41
Conductivity Dissolved
Date/Time Gallons Purged (gal) (umhos/cm) pH (pH Units) Temp (deg C) Redox (mV) Turbidity (NTU) Oxygen(%) Before/After
8/18/202110:58 19.25 1837 7.35 15.70 481 1.0 87.0
8/19/2021 9:13 1896 7.47 15.56 Before
8/19/2021 9:14 1894 7.47 15.54 After
[yolume of_water purged (gals)
Pumping_ Rate Calculations
19.25 Flow Rate (Q = S/60) (gal/min) 11.00
Time to evacuate 2 Casing Volumes (min) 1.75
(final Depth_ to Water (feet) 105.05 Number of casing Volumes 1.10
Volume, if well evacuated to dryness (gals) 19.25
Name of Certified Analytical Laboratory
AWSL
Analytical Sall'l_eles 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 1052. Purge began at 1056. Purged well for a total of 1 minute and 45 seconds. Purged well dry. Purge ended at 1058. Water was clear. Left site at 1101 . Arrived on site at
0909. Depth to water was 91.05. Samples bailed and collected at 0913. Left site at 0915.
Signature of Field Technician
~<L,~.e~
,•,~··~y~ -F-: ~· ~ .-:r:s
,· .· '
Location ID
Field Sample ID
Purge Date & Time
Sample Date & Time
Purging Equipment
Pump Type
Purging Method
Casing Volume (gal)
Calculated Casing Volumes Purge Duration (min)
pH Buffer 7.0
pH Buffer 4.0
Specific Conductance (micromhos)
Date/Time Gallons Purged (gal)
8/17/20219:14
8/17/20219:15
8/17/20219:16
8/17/20219:17
@olume of water purged (gals)
[Final Depth to Water (feet)
99.00
110.00
121.00
132.00
Name of Certified Analytic<l!_Laboratol1'.
AWSL
Analytical Samples Information
Type of Sample/Analysis
Chloride
Nitrate/nitrite as N
Comments:
Groundwater Discharge Permit
Groundwater Monitoring Quality Assurance Plan
White Mesa Mill
Field Data Worksheet For Groundwater
TWN-18 Sampling Program Nitrate Quarterly
TWN-18_08172021 Samplin.9. Event 2021 Q3 Nitrate
8/17/20219:05
8/17/20219:17 [sampler TH/Dl
Pump Weather Conditions Sunny
Grundfos External Ambient Temperature (C) 21
2 Casings Previous Well Sampled TWN-18R
55.27
10.05
7.0 Well Depth (ft) 147.00
4.0 Well Casing Diameter (in) 4
1000 Depth to Water Before Purging (ft) 62.35
Conductivity Dissolved
(umhos/cm) pH (pH Units) Temp (deg C) Redox (mV) Turbidity (NTU) Oxygen(%) Before/After
2777 6.89 14.67 492 4-.5 2.0
2777 6.88 14.66 492 4.4 1.9
2775 6.89 14.67 491 4.4 2.0
2775 6.88 14.67 491 4.3 2.0
Pumping Rate Calculations
132.00 Flow Rate (Q = S/60) (gal/min) 11.00
Time to evacuate 2 Casing Volumes {min) 12.00
63.75 Number of casing Volumes 2.00
Volume, if well evacuated to dryness () 0
Sample Container Preservative
Collected? Matrix Number Type Sample Filtered? Type Added?
y WATER 1 500-ml Poly u None N
y WATER 1 250-ml HOPE u H2S04 (pH<2), 4 Deg C y
[ Arriv~d on si_te at Q.901 . f_urge _Qega~t 090§. Purg_ed weJI for a _total ~f 12 minute~Purg~ ended an~amples collected at 0917. Water was clear. Left site at 0920.
Signature of Field Technician
--=:).,~M.~
Groundwater Discharge Permit
t.~-1-.. -.. ····
; -'
... ,/ ~y~
Groundwater Monitoring Quality Assurance Plan
White Mesa Mill
Field Data Worksheet For Groundwater
Location ID TWN-18R Sampling_ Pre>_gram
Field Sample ID TWN-18R 08172021 Sampling Event 2021 Q3 Nitrate
Purge Date & Time
Sample Date & Time 8/17/2021 8:45 !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 O 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
8/17/20218:44 11.00 3.0 7.96 23.87 445 0 47.0
Pumping Rate Calculations
[V<>lum~ 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 ()
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:
Signature of Field Technician
~~/".G,'"t.,.C .. -~
Groundwater Discharge Permit e~. _." ~_.,, e . ~•
.._._~ cl< -f ~ ~ ' ]~j...-• ~
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 08192021 Sampling_ Event 2021 Q3 Nitrate
Purge Date & Time 8/18/2021 9:44
Sample Date & Time 8/19/2021 9:05 jsarnpler TH/DL
Purging Equipment Pump Weather Conditions Partly cloudy
Pump Type Grundfos External Ambient Temperature (C) 22
Purging Method 2 Casings Previous Well Sampled TWN-04
Casing Volume (gal) 13.28
Calculated Casing Volumes Purge Duration (min) 2.41
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) 77.85
Conductivity Dissolved
Date/Time Gallons Purged (gal) (umhos/cm) pH (pH Units) Temp (deg C) Redox (mV) Turbidity (NTU) Oxygen(%) Before/After
8/18/2021 9:45 13.75 3161 6.87 15.87 525 5.3 17.4
8/19/2021 9:05 3253 7.30 16.11 Before
8/19/2021 9:06 3250 7.28 16.10 After
Pumping Rate Calculations
!volume of wate_!_purged (9-als) 13.75 Flow Rate (Q = S/60) (gal/min) 11.00
Time to evacuate 2 Casing Volumes (min) 1.25 I Final Depth to Water (feet) 96.03 Number of casing Volumes 0.96
Volume, if well evacuated to dryness (gals) 13.25
Name of Certified Analytical Laboratol"{_
AWSL
Analyt_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 H2SO4 (pH<2), 4 Deg C y
Comments:
Arrived on site at 0940. Purge began at 0944. Purged well for a total of 1 minute and 15 minutes. Purged well dry. Purge ended at 0945. Water was clear. Left site at 0948. Arrived on site at 0901 .
Depth to water was 78.04. §_amples bailed and collected at 0905. Left site at 0908.
Signature of Field Technician
~«..'Vl
Groundwater Discharge Permit etF-:: ·-..._..,..' ... :------_. \1.· -• -•'
_ _ ,, :.i~-..._,·· _.1 ~Y~--:rS
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 08192021 Sampling Event 2021 Q3 Nitrate
Purge Date & Time 8/18/2021 8:39
Sample Date & Time 8/19/20218:55 [sampler TH/DL
Purging Equipment Pump Weather Conditions Partly cloudy
Pump Type Grundfos External Ambient Temperature (C) 21
Purging Method 2 Casings Previous Well Sampled TWN-60
Casing Volume (gal) 19.30
Calculated Casing Volumes Purge Duration (min) 3.51
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) 79.08
Conductivity Dissolved
Dateffime Gallons Purged (gal) (um hos/cm) pH (pH Units) Temp (deg C) Redox (mV) Turbidity (NTU) Oxygen(%) Before/ After
8/18/2021 8:41 22.00 3770 6.70 15.55 563 6.0 104.0
8/19/2021 8:55 3692 7.38 16.19 Before
8/19/2021 8:56 3700 7.35 16.15 After
Pumping Rate Calculations
jvolu_rne of w~ter purged (gals) 22.00 Flow Rate (Q = S/60) (gal/min) 11.00
Time to evacuate 2 Casing Volumes (min) 2.00
[ Final Depth !O Wate_r-_ (feet) 106.88 Number of casing Volumes 1.13
Volume, if well evacuated to dryness (gals) 22.00
Name of Certified Anal}'!ic:al Lab<>ratory
AWSL
Analytic~! Same_les 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 0835. Purge began at 0839. Purged well for a total of 2 minutes. Purged well dry. Water was clear. Purge ended at 0841. Left site at 0844. Arrived on site at 0851 . Depth to water
was 79.23. Samples bailed and collected at 0855. Left site at 0858.
Signature of Field Technician
~~.,~~~
Groundwater Discharge Permit
:a~./~
. ' .-~ .-/ l ~
Groundwater Monitoring Quality Assurance Plan
White Mesa Mill
Field Data Worksheet For Groundwater
Location ID TW4-22 Sampling Program Chloroform Monitoring
Field Sample ID TW4-22 08242021 Sampling Event 2021 Q3 Chloroform
Purge Date & Time 8/24/2021 9:34
Sample Date & Time 8/24/2021 9:35 [sampler TH/DL
Purging Equipment Pump Weather Conditions Sunny
Pump Type Grundfos External Ambient Temperature (C) 23
Purging Method 2 Casings Previous Well Sampled TW4-24
Casing Volume (gal) 28.65
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) 70.82
Conductivity Dissolved
Date/Time Gallons Purged (umhos/cm) pH (pH Units) Temp (deg C) Redox (mV) Turbidity (NTU) Oxygen(%) Before/After
8/24/2021 9:35 5379 6.94 16.64 451 2.0 87.0
Pumpin.9. Rate Calculations
[volume of water purged O Flow Rate (Q = S/60) (gal/min) 16.00
Time to evacuate 2 Casing Volumes ()
[Final l:>epth to Water (feet) 103.78 Number of casing Volumes
Volume, if well evacuated to dryness (} 0
Name of Certified Analytical Laboratory
AWSL
Analyt.ical Samples Information
Sample Container Preservative
Type of Sample/ Ana lysis Collected? Matrix Number Type Sample Filtered? Type Added?
VOCs-Chloroform y WATER 3 40ml VOA u HCI (pH<2), 4 Deg C y
Chloride y WATER 1 500-ml Poly u None N
Nitrate/nitrite as N y WATER 1 250-ml HDPE u H2SO4 (pH<2), 4 Deg C y
Comments:
[ Arrived on site at _D931 . Samples collected at 0935. Water was clear. Left site at 0937.
Signature of Field Technician
~~./4~
Groundwater Discharge Permit
, .
'tF-::i· .. _,...--,, ,'' '
-, ·~ ..a" r·
Groundwater Monitoring Quality Assurance Plan
White Mesa Mill
Field Data Worksheet For Groundwater
Location ID TW4-24 Sampling Pro9ram Chloroform Monitoring
Field Sample ID TW4-24 08242021 Samplin9_ Event 2021 Q3 Chloroform
Purge Date & Time 8/24/2021 9:25
Sample Date & Time 8/24/2021 9:26 [sampler TH/DL
Purging Equipment Pump Weather Conditions Sunny
Pump Type Grundfos External Ambient Temperature (C) 23
Purging Method 2 Casings Previous Well Sampled TW4-25
Casing Volume (gal) 28.65
Calculated Casing Volumes Purge Duration O
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) 70.92
Conductivity Dissolved
Date/Time Gallons Purged (umhos/cm) pH (pH Units) Temp (deg C) Redox (mV) Turbidity (NTU) Oxygen(%) Before/After
8/24/2021 9:26 7858 6.74 16.87 496 1.7 20.0
Pumping Rate Calculations
!volume ~water purged O Flow Rate (Q = S/60) (gal/min) 15.00
Time to evacuate 2 Casing Volumes ()
!Final Depth to Water (feet) 75.37 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 HOPE u H2SO4 (pH<2), 4 Deg C y
Comments:
[ Arrived on site at 0922. Samples collected at 0926. Water was mostly clear. Left site at 0928.
Signature of Field Technician
-==::i~.,.-a;..,r~
Groundwater Discharge Permit ~F-1··· ,T , ~ / ·v~s .-.· ! l _,...~
,· ,-_I
Groundwater Monitoring Quality Assurance Plan
White Mesa Mill
Field Data Worksheet For Groundwater
Location ID TW4-25 SamJ>ling Program Chloroform Monitoring_
Field Sample ID TW4-25 08242021 Sampling Event 2021 Q3 Chloroform
Purge Date & Time 8/24/2021 9:14
Sample Date & Time 8/24/2021 9:15 !sampler TH/DL
Purging Equipment Pump Weather Conditions Sunny
Pump Type Grundfos External Ambient Temperature (C) 22
Purging Method 2 Casings Previous Well Sampled TW4-21
Casing Volume (gal) 41.27
Calculated Casing Volumes Purge Duration ()
pH Buffer 7 .0 7.0 Well Depth (ft) 136.70
pH Buffer 4.0 4.0 Well Casing Diameter (in) 4
Specific Conductance (micromhos) 1000 Depth to Water Before Purging (ft) 73.49
Conductivity Dissolved
Date/Time Gallons Purged (umhos/cm) pH (pH Units) Temp (deg C) Redox (mV) Turbidity (NTU) Oxygen(%) Before/After
8/24/2021 9:15 2535 7.01 15.96 511 0 39.8
Pumping Rate Calculations
[volume~f water !)Urged() Flow Rate (Q = S/60) (gal/min) 10.50
Time to evacuate 2 Casing Volumes ()
[ Final Depth to Wate!_J_feet) 84.23 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 HOPE u H2SO4 (pH<2), 4 Deg C y
Comments:
[ Arrived on site a_!_ 0911._Samples collected at 0915. Water was clear. Left site at 0918.
Signature of Field Technician
~,,..,~-h-·{~
Groundwater Discharge Permit
SF-:.
. ,,,.·-. l ,,-
<,__:;,; r'~ .,,
•. _ }/ , . .D4SAGY~.-iEZ S
Groundwater Monitoring Quality Assurance Plan
White Mesa Mill
Field Data Worksheet For Groundwater
Location ID TWN-60 SamplingProg_ram Nitrate Quarterly
Field Sample ID TWN-60 08182021 Samp_ling Event 2021 Q3 Nitrate
Purge Date & Time 8/18/2021 7:14
Sample Date & Time 8/18/2021 7:15 jsampler TH/DL
Purging Equipment Pump Weather Conditions Partly cloudy
Pump Type Grundfos External Ambient Temperature (C) 19
Purging Method 2 Casings Previous Well Sampled TWN-18
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 ()
Specific Conductance (micromhos) 1000 Depth to Water Before Purging (ft)
Dissolved
Date/Time Gallons Purged Conductivity (umhos/cm) pH (pH Units) Temp (deg C) Redox (mV) Turbidity (NTU) Oxygen(%) Before/ After
8/18/2021 7:15 1.1 6.50 23.52 555 2.3 15.0
!Volume of water purged O
Pumping_ Rate Calculations
Flow Rate (Q == S/60) (}
Time to evacuate 2 Casing Volumes ()
jFinal Depth to Water (feet) 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 H2S04 (pH<2), 4 Deg C y
Comments: I _QI sample was collected in the lab at 0715.
Signature of Field Technician
Groundwater Discharge Permit
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 08242021 Sameiing Event 2021 Q3 Chloroform
Purge Date & Time 8/24/202112:59
Sample Date & Time 8/24/202113:00 !sam_p_ler TH/DL
Purging Equipment Pump Weather Conditions Sunny
Pump Type Grundfos External Ambient Temperature (C) 26
Purging Method 2 Casings Previous Well Sampled TW4-19
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 ()
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
8/24/202113:00 2.6 5.73 24.35 511 10.1 8.6
Pumping Rate Calculations
jvolume of water p_urged () 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 () 0
Name of Certified Analytica~ Laboratory
AWSL
Analytical Sameles Information
Sample Container Preservative
Type of Sample/Analysis Collected? Matrix Number Type Sample Filtered? Type Added?
voes-Chloroform y WATER 3 40mlVOA u HCI (pH<2), 4 Deg C y
Chloride y WATER 1 500-ml Poly u None N
Nitrate/nitrite as N y WATER 1 250-ml HOPE u H2SO4 (pH<2), 4 Deg C y
Comments: I DI sample was collected in the lab at 1300. Left site at 1305.
Signature of Field Technician
~=~M~
•,~l ,_ ... · -, ,·,··,'~y~ ...
Location ID
Field Sample ID
Purge Date & Time
Sample Date & Time
Purging Equipment
Pump Type
Purging Method
Casing Volume ()
Calculated Casing Volumes Purge Duration ()
pH Buffer 7.0
pH Buffer 4.0
Specific Conductance ()
DatefTime Gallons Purged
[volume_of water pur_g_ed O
[ Final D~pth to Water (feet)
Name of Certified Analytical Laboratory
AWSL
Analytical Samples Information
Type of Sample/Analysis
Chloride
Nitrate/nitrite as N
Comments: I D_ue_licate of TWN-18
Signature of Field Technician
Groundwater Discharge Permit
Groundwater Monitoring Quality Assurance Plan
White Mesa Mill
Field Data Worksheet For Groundwater
TWN-65 Sampling Program
TWN-65 08172021 Sampling Event 2021 Q3 Nitrate
8/17/20219:17 [sampler TH/DL
Weather Conditions
External Ambient Temperature ()
Previous Well Sampled
Well Depth (ft)
Well Casing Diameter O
Depth to Water Before Purging (ft)
Dissolved
Conductivity pH Temp Redox Turbidity Oxygen I Before/After
Pumping Rate Calculations
Flow Rate (Q = S/60) ()
Time to evacuate 2 Casing Volumes O
Number of casing Volumes
Volume, if well evacuated to dryness ()
Sample Container Preservative
Collected? Matrix Number Type Sample Filtered? Type Added?
y WATER 1 500-ml Poly u None N
y WATER 1 250-ml HOPE u H2SO4 (pH<2), 4 Deg C y
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
Date: 8/l 1 /2021 -8/13/2021
Depth to Depth to
Date Time Well Water (ft.) Date Time Well Water (ft.)
8/1 I /2021 1002 MW-01 64.86 8/13/2021 656 MW-04 81..68
8/11/2021 903 MW-02 109.52 8/13/2021 701 TW4-01 103.33
8/11/2021 1319 MW-03A 84_]4 8/13/2021 652 TW4-02 98.10
8/11/202 l 733 MW-05 108.14 8/13/2021 751 TW4-03 64.62
8/11/2021 834 MW-II 85.31 8/13/2021 708 TW4-04 81.06
8/11/2021 737 MW-12 109.60 8/13/2021 746 TW4-05 72.02
8/11/2021 821 MW-14 101.78 8/13/2021 718 TW4-06 79_]]
8/1 1/2021 817 MW-15 105.36 8/13/2021 711 TW4-07 82.07
8/1 I /2021 1311 MW-17 72.13 8/13/2021 715 TW4-08 85.28
8/11/2021 1010 MW-18 73.85 8/13/2021 742 TW4-09 70.05
8/11/2021 1028 MW-19 66.13 8/13/2021 738 TW4-10 69.35
8/11/2021 1247 MW-20 86.33 8/13/2021 647 TW4-II 89.90
8/11/2021 1256 MW-22 66-39 8/13/2021 918 TW4-12 55.88
8/l I /2021 742 MW-23 113.84 8/1312021 914 TW4-13 56.95
8/11/2021 937 MW-24A 11 l.l l 8/13/2021 906 TW4-14 77.52
8/11/2021 934 MW-24 110.05 8/13/2021 734 TW4-16 73.70
8/J 1/2021 830 MW-25 81.28 8/13/2021 800 TW4-l8 73.11
8/11/2021 916 MW-26 75.40 8/13/2021 945 TW4-19 73.40
8/11/2021 948 MW-27 58.03 8/13/2021 620 TW4-21 72.33
8/11/2021 920 MW-28 74.65 8/13/2021 634 TW4-22 68.20
8/11/2021 908 MW-29 107.15 8/13/2021 730 TW4-23 75.74
8/11/2021 712 MW-30 75.18 8/13/2021 630 TW4-24 68.71
8/11/2021 841 MW-31 69.33 8/13/2021 625 TW4-25 69.25
8/11/2021 846 MW-32 82.18 8/13/2021 722 TW4-26 73.95
8/11/2021 755 MW-33 DRY 8/13/2021 843 TW4-27 79.18
8/11/2021 806 MW-34 107.38 8/13/2021 922 TW4-28 49.36
8/11/2021 749 MW-35 112.25 8/13/2021 902 TW4-29 78.48
8/11/2021 746 MW-36 110.51 8/13/2021 850 TW4-30 75.16
8/11/2021 810 MW-37 106.06 8/13/2021 847 TW4-31 76.41
8/11/2021 1237 MW-38 70.28 8/13/2021 927 TW4-32 56.43
8/11/2021 1230 MW-39 64.65 8/13/2021 839 TW4-33 78.25
8/11/2021 1218 MW-40 79.85 8/13/2021 858 TW4-34 76.71
8/13/2021 854 TW4-35 75.42
MW-26 = TW4-15 8/13/2021 910 TW4-36 58.28
MW-32=TW4-17 8/13/2021 638 TW4-37 72.15
Comments: 8/13/2021 755 TW4-38 60.06
8/13/2021 642 TW4-39 74.55
8/13/2021 726 TW4-40 72.32
8/13/2021 705 TW4-41 88.87
8/13/2021 835 TW4-42 69.93
Date Time
8/11/2021 1033
8/11/2021 1021
8/11/2021 141 l
8/11/2021 1354
8/11/2021 1349
8/11/2021 1424
8/11/2021 1421
8/11/2021 1417
8/11/2021 1408
8/11/2021 1016
8111/2021 957
8/11/2021 1049
8/11/2021 1044
8/11/2021 1403
8/11/2021 919
8/11/2021 1059
8/11/2021 1111
8/11/2021 906
8/11/2021 859
8/11/2021 1158
8/11/2021 851
8/11/2021 847
8/11/2021 840
8/11/2021 1335
8/l l /2021 1330
8/11/2021 1325
8/11/2021 822
8/11/2021 834
8/11/2021 815
8/11/2021 750
8/11/2021 746
8/11/2021 730
8/11/2021 757
8/11/2021 737
8/11/2021 804
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-10
DR-11
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.)
67.30
46.17
57.27
67.35
66.06
69.25
58.35
42.84
62.32
80.69
80.55
59.48
47.85
62.44
54.03
77.95
79.19
83.18
94.08
91.91
51.32
86.52
78.38
97.93
91.88
69.82
76.19
92.85
64.68
63.28
55.45
100.54
DRY
69.05
44.51
Weekly _ Inspection Form
Date 1 .... ,. a, Name ym Ga'yt:111 <1 · lroar< fl rlifz.c
Time Well Death*
09-r;!! MW-4
Jystem Operation;,;,, no note
Comments any problems/corrective actions)
Flow t.f, n Yes No
Dq1~ MW-26 Flow JG, n Va No
If< l\'-4'.1._ TW4-19 Fldw t ta .0 ¥iii No
N 6.-TW4-20 NA Flow "'A Yes a.
Meter NA Yes .a.
fl'l I &I TW4-4 ¥ea No
Meter 7 1. «-i, r,,,, • n
f{)~0:,,,97 TWN-2 /-n , 1,. Flow 1 t .. n _'ii8 No
'le No
l()S\~( TW4-22 'Vea No
'tfe-No
'D«~ct TW4-24 I',. ,: • .1 .. ~ Flow , .;-9i Vas-No
¥D No
n~~n TW4-25 1aC\ n4 Flow ,a .2 ¥a, No
Meter i<t.-1 G,..2 .:2 ..,q -No -K' 1tai ~Ill TW4-1 10<., t. Flow Ht.~
Meter 3 1,,.-~r~r,~.,
O~lof(. TW4-2 1 t.u1 n~ Flow , r.. 'i 'M8 No
Meter Y4t;73'-! 7 '1189 No
qo.11 Flow • '-' ~ ~No
)a No
lbtl~t) TW4-21 .., ~ 7 , Flow 1 ~. y ,_.No
¥.a-No
fDqon TW4-37 ~ No
Meter '..l ~ 1 l;"~ 7S .,-l!IIS'NO
oqlJ-, TW4-39 qO, ~q Flow , , c-,. V. No
'@,I No
tn .1--a.. 1W4-40 ~ No
Meter ~ 1 ~L\ '-11 t,. tA Ma No
10•~ 1W4-41 ~ No
'm No
Operational Problems (Please list well number):
Corrective Actlon(s) Taken (Please list well number): _______________ _
• Depth is measured to the nearest 0.01 feet.
Weekly Inspection Form
Date z-,a-41
Time Well
Name:;;:;:),,,0 U,•<l'<D• &:« ~/l~t
111q",: MW-4
· System Operat:~,, no note
Depth* Comments anv probfems/conectlve actions)
«1,c11. Flow t-1 () Ya No
Meter 1.q1., ~~o -:1" • No
l)Q I '1 MW-26
Jl<t'!in TW4-19 "7 ~ 2 c11 Flow I t, 2. M No
Meter ~:SI 31.l\ t. 1.. " ._ No
tJA TW4-20 NA Flow NA Yes '-'
Meter t....1 1a.. Yes Mf
1'3 ~~ TW4-4 11~. ,..., Flow , ~-« .,. -_ No
Meter -, r... ,_...-... , -, I'..:-~ ._ No
n~,< TWN-2 ~• so Flow ,1,. _ n -_ No
Meter '7~ ~ ~ L ,,.-:a V.., No
IIJ«(' -~ TW4-22 l'-.i ~~ Flow 111 . D ¥111 No
ll)K'//J TW4-24 'es No
-No . oan ,. TW4-25 7/J n1. Flow 10. ~ V.. N6
~Nb
1'3l ~ TW4-1 , ,, t::'. "2 c Flow 1 2. ~ ._ No
._ No
IIJQ~:l TW4-2 11J9. '\t. Flow , 1.. o ._ No
Meter ~" 1. t~ ~" r. -No
"-6 No
V. No
n,~'il. TW4-21 ~ No
'a,-No
IO'IOI TW4-37 SJ O I 'I FIQW 1 « LJ V.. No Meter~ n I a'-4 7'1 , -No
t")CfD4ill TW4-39 acr ,.1 Flow , -, • , ... "-No
V. No
13 ~ o TW4-40 --r,.c.~ Flow 1-9 o "-No Meter «.,,. r;' .!1_'1 • 81 'e No
1'12'1 TW4-41 V.. No·
~ 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 1-,~-a.1 Name D.~UJ C..:. l.'i.·01.00-• ~,aacit: 1:1., l1" I J
Time Well Depth* Time Well De pth*
1303 MW-4 ,,2.11 L~a.~ TWN~1 la!. :l."'1
,a~z TW4-1 Lll..2.~ Hit!£ TWN-2 ~1.511.
13 ll TW4-2 110. 13 H:CY!f TWN-3 ~a.1:1 ·
1318 TW4-3 r.~.t-S: 1!13~ TWN-4 ,.a, I I
ia~ TW4-4 l&..:31 l!U3 TWN-7 Sa, t.I
l3a.:Z TW4-5 u.a.a. Ht~i: TWN-18 ~a.~G
12.~5: TW4-6 -,q, £2.. •~og MW-27 5'.Zt!S
l3QD TW4-7 i,'2..,13 •~as: MW-30 li. US
l 3tl l TW4-8 8£~.2 1~01 MW-31 ,!:.32
13.1~ TW4:-9 za.03
i33Q TW4-10 t.9, ~l
J31S: TW4-11 !S.~I
l~l8 TW4-12 r.~cs,
,a1s: TW4-13 s~.ss 12.~\ TW4-28 ~!.35:
l.2.IJ 8. TW4-14 11,l~ l~Q 5'" TW4-29 7.S, !lS
· t1-S'f TW4-15 74. IS II <a TW4-30 1s:og .,
¥',lff TW4-16 13 . .,, 11 ~3 TW4-31 1c.. . .a1
TW4-17 ~'l~.i 1a~ TW4-32 ~~.is ~ :Mn(~
l~2.Ga TW4-18 '.13, Q8. 11 ~3 TW4-33 ::1-8.li
ll3i TW4-19 12.Q3 US:I TW4-34 1,.,,
bl.A TW4-20 b1A llSS: TW4-35 1s:.~2.
l~3{/_ TW4-21 '12.,Q.~ I 2.1.2 TW4-36 2.lt l S: . ·'• TW4-22 TW4:-37 Q~l f.w.QS 13!11 11..1a
l2.3~ TW4-23 1~-Gt9 l3 :I.I TW4-38 ~O~ll
l!~I TW4-24 ,1,33 l33I TW4--39' l:A,22.
i~U9 TW4-25 ,!,~! La.3:a TW4-40 -,,2..,l6
J.13(1 TW4-26 :Z3u93 ,:2.s:a TW4-41 SI.~~
""' TW4-27 7'9,0S: IIMO TW4-42 "'' 1·1
Comments: (Please no~ the well number for any comments) (±uv "f -a.a Abank e.l
* Depth is measured to the nearest 0.01 feet
Weekly Inspection Form
Date 7 .. , 9 _ 61 Name D-«11 L--dr--;J ,:;:...re <Ek«: 5a <
me e 8D om n ~l!rO ems comtctfv1 actloa•l ',~.., MW-4 Ql.q~ Flow " 0 -No
Tl W II D th*
System Opera :nal {If no note
C me ts an bl t
Meter 2_qt;~Q~"l:"l"n -_ No
1Dt;'tl MW-26 '1":li. .n,_ Flow I Ct, :J. 'a No
Meter ~ o , rL> q 1,, . Q --No ..... ~ TW4-19 7 d. , t c;--Flow I/,. () ~ No
Meter . .:.u~ '-t ~o,,_ 1 n 1 ~ No
f\lA TW4-20 fl.I .6.. FJow NA Yes"'-
, Meter fl..lA Yes•
I J 1_"( 1W4-4 ~"' t~ -y Flow /J I,. ~ ... &-No
Meter 11,.~ 1 i l /,. ~ No
O~Y:>.. TWN-2 t;~ ~n Flow JI,. 0 :t.a. No
Meter 9.nnDL/ 'f~ V.. No
D~'i""« TW4-22 l'.q J., Flow I I,, .2 V. No
Meter ~ 11 .,. <..,. ~ _. No
0'1.t:n TW4-24 t."'J."1.~ Flow l f.. i-/ "811, No
Meter 11 .. -, <it 1 "'1 ~ c..11= ._ No -
l>A ,q I. TW4-25 (,.f.. , .. , Flow In. Y. .__ No
Meter ~733e..1 ·r,3J. ~ No
I\'~ TW4-1 JI}/. ,e. Flow ,2 ~ ¥a, No
Meter ~tasrqtHl. I ... No
111>~ TW4-2 ,o(' Q~ Flow I I,, "{ Va No
Meter '-'~-rt.., 1 '1 Vee No
10J;t.. TW4-11 Qt) ,, Flow 1 "4 ~ ~ No
Meter .,.nn&.1 .q ~ ,_ No
o«-in TW4-21 -r<:"'I'> Flow J/-I./ ._ No
--Meter ..1."10"3i.~, .. '.1 ~n .... No
JD](J TW4-37 I. ,. QI) Flow HI 0 Via No Meter !I o 2. c,. ,;-A , . -:t ._. No
ID'1"1 TW4-39 -,., . ~, Flow ,~ Q .._ No
Meter ~ '1...'5" <t'1 l, ,'4' ._. No
/ I '°':!IA: TW4-40 -f!I. ~Q Flow 1'9'.l'I ¥tm, No
Meter c11\\M1 :l\ "-No ·r-
JI I Cl TW4-41 ta-t .,"r Flow (,,,. 0 ~ No
Meter -i..t 01,, J ~ .&.f Ll 'M No
Operational Problems (Please list well number): t-r<W/1-1 .. ':In .\
{ A.I _/ __ _,,,.J/
. '--Corrective Act10n(s) Taken (Please 11st well number). /
* Depth is measured to the nearest 0.01 feet.
Weekly Inspection Form
Date
Time Well
119.t:t;" MW-4
vstem Operational llf no note
Deoth* Comments any problems/corrective actions)
9.-,. rM Flow "' /J ~ No
ll"JSl ~ ::1 MW-26 ..,~ .~,;--Flow 1 /..., l"J ~ No
Meter t:. o-:t9. 0'-1 CJ • No
1 1 -,.< TW4-19 -, 1 1 c;-Flow 1 ~ I) ~ No
Meter :JSl~~n-.:1c(' 1 ~ No
A/A TW4-20 1\.1 A. Flow /\J A Yes -Ma
Meter ,., b,,, Yes •
no11(' TW4-4 "-No
Meter ,r.9. :2n ~ , V. No ._ No
Meter~, "74.t~ 11 .... No
ln«21 1 TW4-22
~ Meter ~ 1 -=-.Lt.., <. q
~ No
.\91. No
In~ o,:;-TW4-24 ..,,, '" Flow , <. t1 -. No
1,. t. "J :1 Flow / I), '1 ¥a No
Meter 'S'< 7q "17'1..~, ~ No
1f)=t ~~ Flow ,~ « .._ No
nf'.Ll.., TW4-2
Meter '-11./R/4 ~~-q ._.. No
n,;r "'n TW4-11 c;iq ~o Flow 1'::l .'il ._ No
Meter ,_, , 'l <. ~ ,:;-~ No
-J"r. 11J Flow 1 / __ "' ~ No
Meter .,2--,1,n1.t;":n7 ~ No
11>~ 1st TW4-37 -rt./. "'1~.. Flow 19. n ~ No
o A !Ii;-TW4-39
lr'JQ"!l -:1. TW4-40 -, 1 -.,.~ Flow •~ n Vee No
09/ta TW4-41 c.tct «« Flow ,,, n ) • No
t._ _ _,L ___ .....1... ___ J!!M.:.::e:.:;:te;.:..r_~...c..r.;-L· .... ,1,.":~?1_,_,""'-c;--~---.s~I! 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 :s.;. 2,,-i.l
Time Well
llQ~t;. MW-4
!)'stem Operatlona (ff no note
Deoth* Comments any problems/corrective actions)
QI tt.1 Flow 11.n 'iiflll No
Meter ~a~ ~n .1 r,.,.,;-,;-\Alie No
nt:11.:1 MW-26 qi} A..ft-4 Flow 11,..n 'a No
Meter r..nt.JgJ.3 ._ No
1 1 ~/) TW4-19 "-No
lfa, No
I\.IA TW4-20 I\.IA Flow NA Yes Mit
Meter N ll. Yes .W.
nt:,t::, TW4-4 tr, •. t.//1 Flow ,h /) V. No
Meter 7~'1 / .:J ':l .i
ne~t:. TWN-2 Flow ·IL tJ "-No
~ No
ltJA'l.1 TW4-22 Flow J[,,. "' "8a No
Yaa No
nt1~r:' TW4-24 Flow 1(',A.1
~ No
Oft 1 -r TW4-25 -, I. ,. f1 Flow 1n ~ Vee No
Meter "'~ ,.n.1 q_ Q~ vat No
Flow J!l .Q 'iet No
,.._. No
nq~t. TW4-2 , J 1. , :1_ Flow , ,._ " ..._. No
--No
f}Q ~ 1 TW4-11 \fa9 No
Meter-,,., ".) ti{ lo ~ n --No
n'1 I:'~ TW4-21 -, ~ . ~ r Flow , /,.,. t./ .. No
Meter ~ 7 , « LI. I , . q ~ lM9-No
ntJ11q TW4-37 , .. 1... ~ ,_ Flow , «. o ¥a-No Meter .:l_ n '3, c:;"" n -,_ SI ._,, No
not:1 .. TW4-39 "71,./. ~ n Flow isl. n '6N No
Meter "7-O·~ 7 ~ n )ad-No
tt>ll4.'.1 TW4-40 ., .... /.r:' Flow 1« n V.-No
~ No
1/"JQc.( < TW4-41 a~. ,~ Flow /. n )as, No
~ 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 Oe-ca c. 41"""1/. Monce 1-toil,'7.'
me e 8D ommen n~ Qro em corrective actl2nsl
Ioa,r:-MW-4 «~ !2~ Flow '/,0 ._ No
Tl WH System Operatlo aJ (If no note
D th* C ts a bl s/i
Meter ~ q $? q q 1 ".l o 1 ._ No
ns,; 1 MW-26 12 .~~ Flow ,~ "-I ¥118 No
Meter ~n~ '\\q 3 ~ 'fae No
Jl()ct TW4-19 -r2 n,;-Flow I t.. f\. :. No
Meter :1 IJ 7 "I "-tJ "l . '-I ~ No
NA TW4-20 I\JA. Flow I\.JA Yes ...
Meter NA Yes ..
LJCf~II TW4-4 Sl'I.~~ Flow 11 •• 9. ,,, v.. No
Meter 77/'JJ 7 :J.. • .., Ve No
OS~\ TWN-2 !i~, t;"IJ Flow J t. {J "-No
Meter 9.;-~ol/,.~« ~ No
In s;t ?) "4 TW4-22 I. l. _-, t Flow I /~.1 ._ No
Meter « , , .. q 14 o r:::-Vat No
D'A ~CZ TW4-24 If,, /,.. ,::; 'I Flow J 6. I-{ .._ No Meter u~qnlb 1q ,7 v.. No
Oil I !I TW4-25 ~~.q1 Flow llJ. '! -No
Meter ,1q .:l}i 'l '3 . q fi V. No
IDct~ I TW4-1 lt)r;'II Flow J ~ .~ ._ No
Meter 370QllO () Va No
D'ln4 TW4-2 q :1 ,,r~ Flow I~ '-i ~ No
Meter i../ t; D ,:; o i ~ --No
nqnn TW4-11 c;tq. ,tiq Flow J ,. n '6D No
Meter 1-1 L.I 7 fJ ~ cz "81-No
ostor: TW4-21 7 6,. .. ., et" Flow Ii',,,. .'-/ ~No
Meter ..:l -r ::, ~ -1,a,.~ q.Q ~No
l"Jft, "IIJ TW4-37 t:. t. 41 ".l F1ow / "1 {J ¥al No Meter ~n~,;-,:2~ ~ .~ .wr No
In ff "IL. TW4-39 71. ,-, Flow Jf(,{) ._ No
Meter fe~'.'l n 7 , \ .._.,No
0 ql,,f~ TW4-40 -, .J. (_. t.. Flow ,~ • .fl ¥!ea No
Meter ~ 1"" q , , -:n ~ No
0_,q ,._-, T W4-41 ,:ur t.1. Flow IA. t) .. No
Meter "< 1 g oq 17 VD 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
Name V«n t:..5,-, Te-w<c /6,,U,~
Svstem Operatl naf llf no ·note
Time Well Deoth* Comments anv problems/corrective actions)
«1 ,,,2 Flow "' o Y:e:8-No
In~ qQ MW-26
,n In TW4-19 -,"' -,") Flow , t..t n -._ No
V., No
"' A TW4-20 l\t A Flow Nb. Yes Ma.
Meter ,,__, e:... Yes -Mi:>
, ,, o "1 '1 TW4-4 ~ ~ C'"i.l Flow , ,:. n ,,. )la No
._ No
~ No
._ No
"-No Meter ~ 1 « 1,.. ~ q. 1 ._ No
111 Q. 1 ""' TW4-24 "· ~ "" 1J Flow , ✓-. /'\ ,.._ No
Meter , , ~ Q """ -, 1 , . &; 7 • No
n"f'"''· TW4-25 "'7'.1. .,. t Flow , n. 9:. lie No
--No
nctnQ TW4-1 1 n1 , ,.. Flow , ~ '-' V. No
Meter ...,. ., 1 tLJ ~ ~ ::i Yll9--No
QC.f. nlf" Flow J /,.. 0 ~No
~ No
Ott ,:.:1 TW4-11 .._ No
Meter u ,:; q ~ • 1 .::z ._ No
,n-,-ic:a TW4-21 7'"', c, ~ Flow , ,. ,., V. No
Meter .:2 7 ~ ~ q ,;-I\ no, ¥a No
{)~,, ,. TW4-37 , .• ~ 1 Flow , -« o ~ No Meter '.l A ~ Q i.t a , . 11 ¥a-No
1.0 «"\ ~ TW4-39 -,11 , -:t Flow 1 ~ o "'9 No
Meter ~ ~ t: ~ i a.t • ~ -_ No
n Q -i.l"I TW 4-40 ~ ., -, t'.. Flow , -a n V. No
.._ No
,,,a I I. TW4-41 Q..""9 • -:2."'1 Flow /,,.r o ._. No
Meter -,,.r;l.{q 1 "\ "l '::> ~ No
Operational Problems (Please list well number): /.__...,-:.Uj. •:x"-"''7"'--··~~n...,;-\ __________ _ {-A, J . .,.J }
\ / Corrective Action(s) Taken (Please list well number): _______________ _
• Depth Is measured to the nearest 0.01 feet.
Weekly Inspection Form
Date 11-63 -i?,I
Time w_._11
Name Dcce Ci:: 'rmao J;oa,c Ho, r ,'Jpv
Deoth*
IDI" MW-4
~ystem Operatlona(lf no note
Comments any problems/corrective actions)
Flow '4 n Yes-No
Meter !lno ~q11fr r·!; >a No
1>q,.u. MW-26 '7~ ,e;() Flow l/1-.n .. No
Meter ,,_ , '.:I 7 :, " • 3 --No
11"4< TW4-19 ,'.l n9, Flow I/,. () -No
Meter ~'&QC"'L::l.n.l ~ No
NA TW4-20 tJ A Flow NA Yes ...
Meter NI!.. Yes -,n~,c-TW4-4 er.,. "'() Flow 11,. n ... .... No
Meter .., "1 :J nq ,. , R -No
rnqn« TWN-2 •~-~a Flow J l •. n ._ No
Meter « ~ q ~ ':\ ,; -, 'M-No
nq1-'°" TW4-22 L./. ~Q Flow u. n "-·No Meter Q~n':\11~ Q ._ No
()q I I'.. TW4-24 -, n -, r Flow Ir:./,. ~ No
~No
ltJqnn TW4-25 ~ Q-. '1 ,_, Flow 1n t. ._, No
... No
tn!> I TW4-1 1r,-:, . ..,-, Flow , ~ n ¥a No
Meter "'i.1::J ~ 7q,g "-No
1nn~ lW4-2 1n"? a~ Flow 11,. n ~No
._ No
Flow •~ ~ .__ No
Meter LI 1 .. ~ q. o fil ._ No
OR.tJJ.. TW4-21 ~No
Mia. No
'l)(f~I TW4-37 L. -r. u ~ Flow J fl. n
Meter "' n I.I ,. ~ ~.,. I
._ No
~No
""'7"2 '.";\ ~ Flow , 9..D ~ No
llfD No
rn .. ,:-TW 4-40 'a No
.__ No
,n-1.~ TW4-41 <l« .Q~ Flow /..,. tJ ._ No
Meter ':3< 1'..I> A~-:i 1 ~ No
Operational Problems (Please list well number):
Corrective Action(s) Taken (Please list well number): _______________ _
* Depth is measured to the nearest 0.01 feet.
Weekly Inspection Form
Date NameUc&n c,. I )'ma~, Moore Holt.'hy
vstem Operational (ff no note
anv problema/comtctfve action,) Time Well Deoth* Comments
MW-4 }la No
Va. No
lo4('.~ MW-26 Flow 11 .. o V. No
Meter c. 1 t; o ~ r; l. ~ No
Flow a .. , n ,,. ._ No
'-8-No
MA TW4-20 NA Flow NA Yes,._
Meter NA Yes~
1 ~ ~ n TW4-4 '1'D No
Meter 7 -, ~ ~ , ,;-n ~ No
ot.2t. TWN-2 ~ 7. fl'-/ Flow . I&. fJ V. No .. No
1 nq n ~ TW4-22 Va No
Meter 1t ~ .:1 , r.. l n ... No
'Ofl2~ TW4-24 1.1111 -i /"i Flow , t.. o "-No
Meter , -, n 1 n .., I>. ~" Va No
¥aia No -No
1n&.1-r TW4-1 I Bl/. 7 tit Flow 1.:1 9' ... No
Meter 11::, ~-,., tLJ a 'ait No ..... _
Ya No ---No
11Jnq TW4-11 ... No Meter ,., ,a. .., ::i n o ._ No
1/JAO 7 TW4-21 -,~. I./ tJ Flow 1 r.. o .._ No ..., No
nq~, TW4-37 ~ .,._ • 1 " Flow , • n, Y. No
V!l!IS> NO
7 n e; a Flow Hi. n '6N No
Meter ii"" o g.q • t .._. No
•~~~ TW4-40 -, ::i • r '"i Flow J9. t'1 "-No .... No
J .2. 1 lJ TW4-41 01 tJ A iJ. n Flow ~. ~ Yal-No
~ No
Operational Problems (Please list well number):
Corrective Actlon(s) Taken (Please list well number): _______________ _
* Depth is measured to the nearest 0.01 feet.
Weekly Inspection Form
Date 9 _1 .. ;µ Name Oc-co &:trma" T'\0-ecc Hcq;..L.. ,
Tme e 8D 0 m xero ems comtctlve actions}
1:l.Ot MW-4 ill .CIC: Flow 4. J'l ¥. No
I W fl
? f System Operational (ff no note
D th* C m ents an bl 1,
Meter 3 o, ~~fl "1 t:, 'tfas. No
JIMT MW-26 71./ -' ft Flow 11 .. n .... No Meter 1.r1 lf'tl .:i. 1 ... No
J ':11 '"I TW4-19 71 '·" Flow ,,. n .... No
Meter .!l.4tt ~,_, ~~-ill Vall No
NA TW4-20 NA Flow NA Yes -Meter 1\.1 D. Yes -)1:l.t.. TW4-4 -,~. f,1 Flow I I'. 12. .., -No
Meter 7 -, "' n --, R .., ~No
U)'.:lq TWN-2 c;'°'il '1 ~ Flow jt'. , /l .._ No Meter qi_g-. 15 .., R .... No
11)~'3 TW4-22 L..t..~ .. Flow Jt.. .n ¥a No
Meter l1'f 1 1~ .~ .... No
,o~-r TW4-24 t:..C-:~o Flow I IC': 'fl .._ No
Meter J_]_a-, R "\ '-1u1 ._ No
U>'11 TW4-25 ~ ........ ..,. Flow ,n • V. No
Meter ct 1C\ 19.C" ~-":l ... No
11\lo( TW4-1 Jn'4 ~" Flow 1"' () ~ No Meter 3., '1..,. !2 , .a ¥a No
,u•q TW4-2 q.., -~~ Flow f&.I '~ ._, No
Meter .. , s-"' ~ ~ q . 2 v.. No ··~~ TW4-11 ~(l.,_ ~\ Flow J ,r', l) .._ No
Meter H.9 q?. • -, ~ -. No ..
,n.:1 ~ TW4-21 ~<.11 Flow ,~ .. .._, No Meter .2 7~("'4~ 2 ~,., ~ No
11'1("' 1W4-37 70 2. "1 Flow UI.. t1 V. No Meter .J. o ,;-1 i: n ::i . -:1. .. No
I 1'4 I TW4-39 -,,. ~~ Flow HID ~ No
Meter «'-''I.An"'-_, '-8 No
12.31? TW4-40 -,2..,,R Flow •~ .a .._ No
Meter ~<''-1 ".l 9'1.l.!11 ~ No
J2.~h TW4-41 fUI. ~'1 Flow ,.l'J ~ No
Meter ~rs~~~-""'"-'Wb No
Operational Problems (Please list well number):
Corrective Actlon(s) Taken (Please list well number):
* Depth Is measured to the nearest 0.01 feet.
Weekly Inspection Form
Date 9-1'3-a,t Name Peen fr Lyman J
Time Well Deoth* Cornman ts
inc !l MW-4 41.cu. Flow '4 0
Meter '1 n'.l.._..,., w-• .., ~
,n~-, MW-26 ~:I. -~1> Flow "· .1 Meter ~ 1e1"' 71> 'll
11~"1~ TW4-19 "'Y-:J .~\ Flow II'..• ll
Meter ..2 4 .2. '1 ,:-i.1 « Q
NA TW4-20 f\l~ Flow Mb.
Meter tJA..
t"!OO TW4-4 -,, __ ·"'2~ Flow ,~.'-.,
Meter -, .., ~-, ~/J , ..
114 &.f &.I TWN-2 .r;',A. T!l. Flow 1 / •• ,, . Meter a,1rz .. ~~
1no11 TW4-22 "f "t t I Flow ,,. 0
Meter 1P1 <" ~ .2 ... q
Hl n',11 TW4-24 ,I'_~ c:t,it Flow 11.. q
Meter , -, 1 1 ":t ~ , -~ .l
nQ-.t.. TW4-25 G~.!ll Flow Iii &J
Meter C\ ~ u T .v .:2 • ,.., A
J ::> ,,ur TW4-1 ,n':I.~« Flow I !1 /_
Meter -"' 7 .., ~ • " .,
Ill~,;' TW4-2 Jftf\.11:;' Flow It.. n
Meter ~ r: r:-,., 7 .r. • ,
IIU.fn TW4-11 111.a -rn Flow If;. fl
Meter ,;-nq,. tJ-,
Dq-,a TW4-21 -,,::_ Oil Flow J ,,_ £1
Meter ~ ",_ 2. • .,. -' .., • ,,,.~ TW4-37 (../., 'llCl Flow •• n
1Meter ~ l\,,u. .. 1 ~ .-J
Jh~"' TW4-39 "'72 -a~ Flow IG " Meter ,t;u, ,; ! ,. . ~ 7 ,~n 7 TW4-40 ?-:J.1'-4 Flow ... _ t1
Meter «c-._o.,. \ .a a
J ~~t..l TW4-41 QQ "°' Flow I",. lJ
Meter --i .c q -41 c-~ ,. s
Operational Problems (Please list well number):
Svstem Opertf onal (ff no note
anl£ l!roblem1/corractlve actlonal
'a No
18fa No
v.. No -.. No
~No
~·No
Yes.._
Yes•
¥Be-No
,¥s,No
"81 No .._ No
v .. No ... No
~ No ... No
~ No
:W..No
V.. No --No
>la No
'e-No
"81 No
)Jias.No
V... No
.... No
V... No
~ No
V. No
.._ No
Yea No
'aai.No
Vee No
"-No
Corrective Actlon(s) Taken (Please list well number): _______________ _
• Depth is measured to the nearest 0.01 feet.
I
Monthly Depth Check Form
Date 9-1 l-~\ Name ¼co ti: •,yrna"7, fu11e:c t/121,,~
I
Time Well Depth* Time Well DeQth*
10 5'.a MW-4 83.,:a 11 !:f 0 TWN-1 {.9,t S
10'1'.B TW4-1 U25,QS-II :L~ TWN-2 £s.~a.
z o,:r. TW4-2 91',i:Q ·J:.a.D !:t TWN-3 ~.a.. '2~
~'332 TW4-3 G~ .. ta& i,200 TWN-4 t.~.,s:
JQ':ta, TW4-4 ZS:.15.t u~a TWN-? ~Q.~!i
I 3'11 TW4-5 71,91 IJ11l.. TWN-18 ,,, 2. t "'.,
IO'M TW4-6 ·1!.,2,J H~~ MW-27 ~1. 9.a,
'3 ,2,S: TW4-7 11.~ l~ I2.;I Q MW-30 7.~ l I
11 ai~ TW4-8 iS:.~a 11\!d MW-31 di9,ttl
135'! TW4-9 Zt:J.t lQ
l3&.f£ TW4-10 ~9.~t:"
/IOl TW4-11 96.s ::i_
JOJO TW4-12 ~,.as
1007 TW4-13 ~11D.!r 101~ TW4-28 ~!.~S:
1000 TW4-:14 :Z:11 33 Q9S:Z TW4-29 '3,8,.~A
>105' TW4-15 It ,-UI Q~!:i{,a TW4-30 7~.fQ
-13 -l'.'i TW4-16 :z3.~ Q~~3 TW4-31 lGi.at.
1353 TW4-17 !a... t~· JOII TW4-32 5f.t,,:;8
ll~4 TW4-18 :73. Ii< Q~3l TW4-33 :ns, alfi
J35:9 TW4-19 71.,0S a9S:tt TW4-34 1~.62' ·
NA TW4-20 ~A Q!~! TW4-35 :1~.~!
1)33 TW4-21 :z1.,j"~ iaa~ TW4-36 i't~·~]
II\ la TW4-22 =i.a. .. ~jf: u,2. TW4-37 1r.. t~
103\ TW4-23 :X~,91 133...; TW4-38 t:.{LQ~
ua.a . TW4-24 10..1.n uos TW4-39 1a,,~
pas TW4-25
"'·,. Ii 10;,.$ TW4-40 7a.;u
t03':l TW4-26 :l3A9 lfl~S: TW4-41 2919.3
0939 TW4-27 .,,. ,s: Q913 TW4-42 49,95
Comments: (Please note the well number for any comments)
(;:I~
* Depth is measured to the nearest 0.01 feet
Date '1 / ;l.O I .2.0.;i. t
Weekly Inspection Form
Name---r.::,n,r ~o 11 :A,.:)<
Time Welf Deoth* Comment&
System Operational ltf no note
anv oroblema/correctfve actions]
17'-fS MW-4 81-i "-'1 Flow '-'1.0 C Yes)No
Meter 30"<, 1,1~. 'i<2 ( Yes"'No
IZ 3,C> MW-26 7q .2 ~ Flow ll r> (Yes ')No
Meter (_ 7..1 bD2 , l (Ye°S\ No
1~.2.0 TW4-19 71..f . '-iio Flow \ t... D ,Yes,No
Meter :::l..'i3K3 79 .3 _( "Yes~No
,.;f lt TW4-20 ,,..,,z.lf Flow .N'/.(1 Yes,~ o)
Meter ,,.....,/A Yes (~ ta
1>00 TW4-4 76.'1 () Flow 1(,,..5 ., (Yes '\lo
Meter 775C.... ~'7 c.... ( Yes No
,1..o'i( TWN-2 59.13 Flow ll.. D C.Y~s JNo
Meter 'JI.I~ l~. l ~ (Yes)No
--....
1'2..17 TW4-22 73,):::> Flow lb,0 (""V_j:ts J.Jo
Meter CZ.l. 738~ K I Tes,No
' ~J
l'Z.13 TW4-24 bt.f.<ff{ Flow \l,., ~ CYes /No
Meter 1'71F>b'1 z. .7<.f ( Yes 'No --1-z.o'"( TW4-25 u,,,.i~ Flow 10.5 rYes1No
Meter q 3 J .3 '1 O f< "'\ ( Vis 'No
1'2...SO TW4-1 'TT, Ii "I Flow 12 .::S rYe.s"\No
~ Meter ~1_t;,Cft7.9 (~No
12..._~'1. TW4-2 ,~ r; ,fo Flow ,~.(') ctes'JNo
Meter Yr; t..3Lt 1,.. '; ( Yes) No
12.35 TW4-11 CfD,87 Flow lb b ( Yes'No
Meter £ 1 D9. 0_'1 ( Yes \No
~
IZ~O TW4-21 7'-1.(ftf Flow l(...,.S _(Yes 'iNo
Meter z,C.l:JY7YbS r~No
\. J
122,, TW4-37 7C>.~'-/ Flow ,~.o CYes_'lNo
Meter 'J..OSKY ::J. C...1 l { Te5 JVO
I '2.2'3 TW4-39 17~ 12 Flow i'i{,0 (Y.es) No
Meter 9. L\ ~q'-( 1.3 /Yes... '\No
l3Db TW4-40 77,3q Flow l'6,D ~~No
Meter ~ ~~c.,Sl(;. l.. 'l YesJNo
1'2 _r_i; TW4-41 5<r.11 Flow ea.a i Ye&-vNo
Meter 3 ~c_~ '-1 .2 . IJ? I Yes )No
-' ::;,\ Operational Problems (Please list well number): -f\.:>_Y-.:>"' hr.c: h ... ~-J'.lhr.MX:.----:
Corrective Actlon(s) Taken (Please list well number): ______________ _
* Depth is measured to the nearest 0.01 feet.
Weekly Inspection Form
Date 9-,1-,z-41
Time Well
Name Dea lr91<lZ";?. TM,v Hal ":;r
na-:i, MW-4
vstem Operatlo,;;lf no note
Deoth* Comments any problems/corrective actions)
s,.g ac' Flow "'· 0 Y.-No
, n~ qr;-Flow ,1.. O >as No
,n1-, TW4-19 ., 1.a.1 Flow ,r..n ._ No
NA TW4-20
tJ o,...,. 1,. TW 4-4 71,,, ,.., Flow u,, 1 .. "'81 No
Meter 7 11,. c;--~ 1.,. • ~ Via No
Or/1.n TWN-2 c'~ 11 Flow 114 ::z. ._ No
Meter q~ "Is~ ..;-~ Ma' No
._ No
'm No
:.-No
-No
.o~ 1 ~ TW4-25 &.Cl Ll n Flow ID j. 'Ms-No Meter q ~ .., ,,,., 1 7 R ~ No
Vee No
Meter '3 7,; ~ ~ .2 . ., -...,No
1 o :i ,,_ ,. Flow 1 t~ . l'J _,-No
oq~ TW4-11 q J :r n Flow 1,.,, g ~ No
1 n ft J/ c; Flow 1 t,,,. .., V.. No
Meter b .., -, &i I./ '-II. 1 :.,. No
~1nLJ,~~~2..1·111.o!.+TW.:..:..::..4-=-•..;:;3.:...7_+--"1.Ll.~w.•..w-a:~~--tiFr1ro::::iwr.:::--::--:~'~w.:·-:o=-:--::---,------o.._ No Meter ..:in~'.'l.{)~/.,. ~ ~ No
10~~1 .. TW4-39 ~SI_-;, Flow •~ O V. No
Meter ~ t; I t:SJ s n 'a No
n ~ _.... c; TW4-40 ., 2. • 1 '1 Flow 1 ~ . o ¥M No
Meter· 53 ta 1,, 9 /,. ~Q 1 ¥al> No
OG~l TW4-41 ~C\.04 Flow t. 0 \tis> No
Operational Problems (Please list well number):
Corrective Action(s) Taken (Please fist well number):
• Depth is measured to t'1e nearest 0.01 feet.
@
TWN-20
Cl5565
TW4-42
¢5525
MW-38
-9-5463
TW4-40
♦5525
estimated dry area
temporary perched nitrate monitoring
well installed April, 2021showing
elevation in feet amsl
temporary perched monitoring well
installed April, 2019 showing
elevation in feet ams!
perched monitoring well
installed February, 2018 showing
elevation in feet amsl
temporary perched monitoring well
installed February, 2018 showing
elevation in feet ams!
M;'5~04 perched monitoring well showing
elevation in feet amsl
TW4•12 t d 't . II 0 5568 emporary perche mom onng we
showing elevation in feet ams!
TWN-7 hed it t it . A temporary perc n ra e mon onng
v 5569 well showing elevation in feet amsl
PIEZ-1 perched piezometer showing
g 5588 elevation in feet ams!
RUIN SPRING b 5380 seep or spring showing
elevation in feet amsl
DR-10
6A6.
54/!,()
DR-11 • 6~81l
OR,U
·h
\
\
\
\" "'-~f•nf o~d
7 \
\ .J
TWN-1S
: '
\ ':'-.... ' ..... tt>10,t011Jtd
•
ollfrritb,!'Wi
lWN-11
'-lWN\P , _ "li'--oi~ ~w-~4 JTWN.09
~ G~!_
co
Ab\11toQ~ll_ ,
1WN•12 ~,-
TWN.:
et'2:..ot __
fslfl' _, -
M\U-1Q""
-,,., .,,,,.,--
. --'
8fo0
•;._,·,
' :;"" 0.. L n :-· -~~~!·Jo•;."')•.~1v::r{"J~'i~. ~~~~~f.;\... ~ !•,,.
1 (, ~ ! ._,, "~,<r: ,¼&_~~f,·•• '-iri~"v-~tA
ifl. \,' t 'Ji.,;..._;,.·~ ... ,~,-,;:f;,~' -~~~'"i{~'i,j,f,,[~~i• C..tDI 1 ..,. • ,·,!• ·,-.~~"~v:,r,, .... ,., ... ,.,,.1~~-l"~{.~1-.. )',•t: Un ., '~ I •• i••1 :J,~ ,i•.;,•;lf:._,:. I'-·1 ~~i'f• ~.-. •• , ·,:$; , ,. ~ ' f -' •!Ii, -~ ;-il'r.;;,,;•~-~ '•~°!'1 -~•,H1 .,.\\'.i. _. ' r•··=. •~i-, .. ;-, ,,,-~,. .. ;:,;;• t'"' 1'.(>-~~-l~•"'"'\•" , -I -~ .... -~i" ...... 1/~.~ .... ID-... T.r-:, ~ :<-~i"1:t.":.', , .. l\. • " i•[ i ..... ,:,. r },!. \~·.r .. ?t:_~~:.1.\(f{j._ ........ ·"i.." .... ~ :r ~, .. ~,.. ,.,·& ~~;~~=1~ •' ~."" ~.,, ... •'!,!:-;'.r ,?~f~~J • •iJ~... """ ~r,r.l.~~"l;~~.r.:\'.~ , r', ..• ~,. ·· •.1.'-· ... !'-l.-i2~ ·,'i"•--~",/ -~'ir~''"" -~·'11,r~,, ... · ~: .. ttJf•,...~-,1.1,J {;,, .. <~~;~~...,; ""A~"-~f .. •-~ ~.._.!";v,-.:, .~,:~\.,:~.~. ~·!t.,_ • J. • ... ·-. -:• • '·'•"'·-•'' ,·~"'>"f. l:~;~ •r ' •i•'·•r., · . ., ;a;s:-,' !t • ·, • -:.•·~ -f.~~~-r;.~ .. ._ .. ,,_.,~(!.;.:t,."::{~'!,]-';/j, _-,w-::-.~--,~~ ... ~, _ . ,,,f. :.:t. .. J~ .. :i~j~r~9;p;;~-r·"~ ~! :
----------~----1 mile ..... ~-··· . 3,;:,a,µ;,ev .:-..,,;.½;1W-mta,(;;.,4,,",;,t,,;,.i,¢.';i,;q..-. •~.;;,. _ NOTES: MW-4, MW-26, TW4-1, TW4-2, lW4-4, TW4-11, TW4-19, TW4-21, TW4-37, TW4-39, TW4-40 and TW4-41 are chloroform pumping wells;
TW4-22, lW4-24, 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.
KRIGED 3rd QUARTER, 2021 WATER LEVELS
WHITE MESA SITE
APPROVED DATE REFEREl'ICE
H:/718000/nov21 /WUUwl0921 srf
FIGUC-1
--
1
,,,,,,,, ,, ,,
;,a
I @
TWN-20
[l5565
I TW4-42
I ¢5525
MW-38
I -Q-5463
TW4-40
♦5525
estimated nitrate capture zone boundary
stream tubes resulting from pumping (note:
combined capture shown for TW4-22,
TW4-24 and TW4-25)
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,
TW4-37 and TW4-39)
estimated dry area
temporary perched nitrate monitoring
well installed April, 2021showing
elevation in feet amsl
temporary perched monitoring well
installed April, 2019 showing
elevation in feet ams!
perched monitoring well
installed February, 2018 showing
elevation in feet ams!
temporary perched monitoring well
installed February, 2018 showing
elevation in feet amsl
M.W-5 perched monitoring well showing
5504 elevation in feet ams!
TW4-12 _., ·1 . II 0 temporary perch= mom onng we
5568 showing elevation In feet amsl
TWN-7 temporary perched nitrate monitoring
¢5559 well showing elevation in feet ams!
PIEZ-1 perched piezometer showing
~ 5588 elevation in feet amsl
RUIN SPRING b 5380 seep or spring showing
elevation in feet amsl
DR-10 OR-11
~'
6400
6Q$8 .5,.4.}
~,Uil ..
~-
' ~
Iii;
' '
.......
«~'il11$_1\Q"
1W~MS
.......
~'bob\iin
• ~\)~ fiioii'P~.
T1!VN'•11
'IWN·, 'e'l!iiu ~1-fJl .~~ I TWN-09 TWt1-0f, Pl?l!1 t~i i,iu1r
.), -
-
c,
nlt!'f!.jo~o
'TWN-12
J'WN.-.Yf
,·
1 mile
nmr, ,.. .£•~-~r+ •S~9"4t.'"r._,,!r·•·· ... J~.••·•at'f!h:dy,• ·.,;,.t·,;.t'ztr±trlt&: ~:1 ·e -~•z:e·ll .. =-£',Cl;'~.,.
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 w~lls; TW4-11,water l_evel Is belowtti,e base of the Burro Canyon Formation
HYDRO
GEO
CHEM, INC. APPROVED
KRIGED 3rd QUARTER, 2021 WATER LEVELS
AND ESTIMATED CAPTURE ZONES
WHITE MESA SITE
DATE REFERENCE
H:/718000/nov21 /WUUwl0921 NTcz2.srf
FIGURE
C-2
,, estimated nitrate capture zone boundary
I'" stream tube resulting from pumping (note:
'
combined capture shown for TW4-22,
II
TW4-42
¢5525
TW4-40
♦5P2fi
MW-25
.!>532
TW4-7
Q .:;i:;39
PIEZ-2
"5583
TW4-24 and TW4-25)
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,
TW4-37 and TW4-39)
temporary perched monitoring well
installed April, 2019 showing
elevation in feet amsl
temporary perched monitoring well
Installed February, 2018 showing
elevation in feet amsl
perched monitoring well showing
elevation in feet amsl
temporary perched monitoring well
showing elevation in feet ams!
perched piezometer showing
elevation in feet amsl
1/ 8
32 5f>6ia .5
555fy
--1 _,"I,_,,
56\Hl "
•L.~ <3TW'4-30 ... _ ....
' ' ......
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 3rd QUARTER, 2021 WATER LEVELS
AND ESTIMATED CAPTURE ZONES
WHITE MESA SITE
(detail ma
'
a ·
~
~
CHEM, INC. APPROVED DATE REFERENCE FIGURE
H:/718000/nov21/WL/Uwl0921 NTcz.srf C-3
TabD
Kriged Previous Quarter Groundwater Contour Map
@
TWN-20
C 5565
TW4-42
¢5525
MW-38
-9"5463
TW4-40
♦5525
estimated dry area
DR-14
0
temporary perched nitrate monitoring
well installed April, 2021showing
elevation in feet amsl
temporary perched monitoring well
installed April, 2019 showing
elevation in feet amsl
perched monitoring well
installed February, 2018 showing
elevation in feet amsl
temporary perched monitoring well
installed February, 2018 showing
elevation in feet amsl
M:'5~04 perched monitoring well showing
elevation in feet amsl
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
"1 5588 elevation in feet amsl
RUIN SPRING
c!, 5380 seep or spring showing
elevation in feet amsl
5
Da-11
6
QR•12
li.i @
'
'
' ....
.:
)t~n,toM
1WIM1
....
nb~il ,, 0)10 '~--
:t.
··10
'1\l1!Jlili11odi
M~
J..ap,
R~1
fql'~
~19 .....
.....
C1
-~~o~~ -wm,;t~~' ~--,,
NOTES: MW-4, MW-26, TW4-1, TW4-2, TW4-4, TW4-11, TW4-19, TW4-21, TW4-37, TW4-39, TW4-40 and TW4-41 are chloroform pumping wells;
TW4-22, TW4-24, TW4-25 and TWN-2 are nitrate pumping wells; TW4-1, TW4-2 and TW4-11 water levels are below the base of the Burro Canyon Formation
-=---
HYDRO
GEO
CHEM,INC.
KRIGED 2nd QUARTER, 2021 WATER LEVELS
WHITE MESA SITE
APPROVED DATE REFERENCE FIGURE
H:/718000/aug21 /WUUwl0621 srf D-1
TabE
Hydrographs of Groundwater Elevations over Time for Nitrate Monitoring Wells
0c/B~/90
-Q.
E L~/cc/60 :a
~ -(I)
E
j:: ...
(I) > 0 v~1a1c~
1 (I)
..J ...
(I) -~
T'"" I U/W/vO z ~
60/90/L0
90/0~/0~
0 ci 0 ci ....
q
0 C\I
0 ci C')
0
ci '<t
•
~
◄►
0 ci LO
◄ !
0 ci (!)
I
◄
► ◄ • •
►
◄
•
•
I
◄► ••
►
0
ci r--
0
ci co
0G/8~/90
-Q.
E L~/GG/60 :a
it: -G)
E
j:: ...
G) > 0 v~JLG/G~
Qi > G)
..J ... G) -~
N I G~/W/170 z ~
60/90/L0
C!
0
C!
0
T""
0
ci C\I
0
ci C')
C!
0 "St
C!
0 I[)
0
ci co
0
ci r--
0
ci co
0
ci 0)
-C.
E j5
■ = -G)
E
i= -G) > 0
a; > G)
..I -G) -~
C")
I z ~
L~/Gl/60
v~1a1i~
l~/W/v0
60/90/L0
90/0~/0 ~ -
0 ci
q
LO
◄t
l
·►
►
-◄ ~
◄r
► • /
0 ci .....
0 Lt) .....
q
0 C\J
q
LO C\J
► ·► ◄ ►
1
5·
•
◄ ►
◄•
)
q
0 C')
0 Lt)
C')
(·») 1u1od 6u1Jnseaw Mo1ae 41daa
q
0 "<t
0 ci LO
0l/8~/90
-Q.
E L~/GG/60
.c = -G)
E
i=
I.,
G) > 0 17~/LG/G~ -G) > G)
..J
I.,
G) -~
-.::t' I G~H0/170 z ~
60/90/LO
0 ci 0 ci ....
q
0 C\I
0 ci Cl")
0 ci '<t"
0 ci It)
0 ci (0
0 ci ,-....
co 0 0
co 0 0
◄
,
◄ ►
◄ •► ◄
◄►
0
0
0
►
0
•►
•►
◄
•►
' ►
◄
0
◄
►
0
◄ ...._
....
►
►
►
►
►
►
◄
►
◄
◄
◄ ◄
Depth Below Measuring Point (ft.) ..,..
0 0
0) 0 0
~ -
(11 0 0
.i:,. 0 0
w 0
0
I\)
0
0
......
0
0
0
0
02/22/08
07/06/09
11/18/10
04/01/12
08/14/13
12/27/14
05/10/16
09/22/17
02/04/19
06/18/20
10/31/21
03/15/23
~ z I en
~ -C'D ..,
r-
C'D l
0 < C'D
"'I
::!
3
C'D -?
C" -3
"C -
----Depth Below Measuring Point (ft.)
~ 0 oo m ~ ~ 0 0 0 0 0 0 o o o o o
l.
' ►
►
◄
►
' ◄ ►
►
◄
◄►
•►
►
►
•►
◄
' ►
◄►
◄
►
◄►
'
0
' ►
►
◄►
•►
' ►
►
◄
' ►
►
◄►
►
0
' ◄
•►
◄►
◄
'
◄
0 0
02/22/08
07/06/09
11/18/10
04/01/12
08/14/13
12/27/14
05/10/16
09/22/17
02/04/19
06/18/20
10/31/21
03/15/23
~ z I ....,
:e D) -(1)
""I
r (1) < !.
0 < (1)
""I
::!
3 (1) -= .
C" -3
"C -
-C.
E -.c = -G)
E
i= .. G) > 0
cii > G)
...J ..
G) -~
~ ,....
I z ~
0G/8~/90
6~/t,0/G0
L ~/GG/60
9~/0~/90
t,~/LG/G~
8~/t,~/80
G~/~0/t>0
60/90/LO
0 a;
LO
LO a;
LO
LO
Ct)
<O
0
.,f
<O
.i:,.. co 01
.i:,.. co 0
Depth Below Measuring Point (ft.)
.i:,..
(X)
01
.i:,..
(X)
0
.i:,..
--..J 01
.i:,.. :--r
0
.i:,..
O>
01 i-----------------+-----------4--------4--02/22/08
07/06/09
11/18/10
04/01/12
08/14/13
12/27/14
05/10/16
09/22/17
02/04/19
06/18/20
10/31/21
._ _______ ___._ ___ ____. ____ ...__ ___ ___.._ ___ ----1,. 03/15/23
-f :e z
I ......
en
~ -CD
'"'I
r CD < CD
0 < CD '"'I
::t
3
CD -?
C"
3
"C -
-...J 0 0
O> 0 0
◄
~ -r
' 0
► ◄ ◄► ► ► ' ' ►
►
►
► '
' '
◄
' ' ◄►
'►
►
◄ ►
'
'
◄
" ·►
◄ ◄
Depth Below Measuring Point (ft.)
01 0 0
--~ -
~ 0 0
-
t,.) 0 0
I\)
0 0
_..
0 0 0 0
-
02/22/08
07/06/09
11/18/10
04/01/12
~ z I -lo
08/14/13 00
~ -(I)
""I
12/27/14 r-(I) < (I) -0 <
05/10/16 (I)
""I
::I
3 (I) -09/22/17 -:-+
C"
3
"C -02/04/19
06/18/20
10/31/21
03/15/23
0G/8~/90
6~/v0/G0 -Q.
E -.c
..; L~/GG/60 --Cl)
E i=
I,,, 9~/0~/90 Cl) > 0
G) > Cl) v~/LG/G~ ..J
I,,,
Cl) -~
CJ) £~1v~1ao
,-
I z ~
U/W/vO
60/90/LO
0
c:i LO
q ....
LO
0
C\i LO
0
C")
LO
0 .,;
LO
q
LO LO
0
cci LO
-~C:/C:0/80
Q.
E -.a
it:: -Cl)
E i= ~C:/£C:/LO ... ~ 0
1 Cl)
.J ... ~C:/£~/LO Cl) -~
0 C\I I z ~ ~C:/£0/LO
-~c/<'!0/80
C.
E :a = -Cl)
E
i= ~c/8<'!/L0
I.,
Cl) > 0
"iii > Cl)
..J
I., ~c/8~/L0 Cl) -~
T"" N I z ~ ~c/80/LO
C\I CJ) r--
C\I CJ) r--
C\I CJ) r--
C\I CJ) r--
C\I CJ) r--
C\I CJ) r--
C')
CJ) r--
0c':/8~/90
-C.
E L~/GG/60 -.0 = -G)
E
i= v~/LGIU ...
G) > 0
G) > G)
..J ... i~no1vo G) -ca 3r:
0 C")
I 3r: ~ 60/90/LO
90/0~/0~
0 ~ ,..._
C! LO ,..._
0 a:i ,..._
0 ~ ,..._
0 cri ,..._
0 a; ,..._
0 c:i co
OC::/8~/90
-C.
E L~/C::C::/60
.c = -Cl)
E
i= 17 ~/LG/C:: ~ I.,
Cl) > 0
1 Cl)
..J
I., C::~H0/170
Cl) -~ .,...
cw,
I 3: 60/90/LO ~
90/0~/0~
0 (0
<O
0 cxi <O
0 0 I'-
0 C\i I'-
0 (0
I'-
0 cxi I'-
0 0 co
0 C\i co
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 (blw.MP) (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) Monitoring (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
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.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.MP) (blw.LSD) Well
5,625.75 5,626.69 0.94 95.9
5566.89 5/5120 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
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
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 5/5/20 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
5579.8 6/24/21 62.07 61.24
5579.55 8/11/21 62.32 61.49
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
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
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
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
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
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 11/2/09 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) (blw.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
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.]3
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 6/22/15 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
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
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
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) Monitorin~ (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
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 68.81
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.L D) Well
5.615.26 5.616.40 1.14 130
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
TabG
Laboratory Analytical Reports
American West ANALYTICAL LABORATORIES
3440 South 700 West
;alt Lake City, UT 84119
Phone: [phone]
Toll Free: [phone]
Fax: (80 l) 263-8687
!-mail: awa1 @awal-labs.com
web: www.awal-labs.com
Jennifer Osborn
Laboratory Director
Jose Rocha
QA Officer
INORGANIC ANALYTICAL REPORT
Client: Energy Fuels Resources, Inc.
Project: 3rd Quarter Nitrate 2021
Lab Sample ID: 2108638-013
Client Sample ID: PIEZ-01_08192021
Collection Date: 8/19/2021 948h
Received Date: 8/24/2021 940h
Analytical Results
Date
Compound Units Prepared
Chloride mg/L
Nitrate/Nitrite (as N) mg/L
Date
Analyzed
9/7/2021 I 35h
8/27/2021 901h
Contact: Tanner Holliday
Method Reporting Analytical
Used Limit Result Qual
E300.0 l.00 70.0
E353.2 0.100 7.60
Report Date: 9/10/2021 Page 16 of21
All anal) ses applicable to lhe CWA, SOWA, and RCRA are perfom1ed in accordance to NELAC protocols. Pertinent sampling informalion is located on lhe attached COC Confldenlia\ Business Inform:.ilion: This report is provided for the exclusi, e use of the
~ddressee Pri, ile~es o_r su~seq~enl ~~e of the ~~e of I his _con:ipany or an)' ~':'1ber of its staff, or reproduclio~ ~r this repo~ in ~0~1ection~ with I.he n<!~ertisef!lenl, P~?motio.n or sale of~) ~rodl~CL or p~ocess, ?r in ~nn:c~ion w~lh lh~ n;_-publicalion of I his report
3440 South 700 West
;alt Lake City, UT 84119
Phone: [phone]
Toll Free: [phone]
Fax: [phone]
:-mail: [e-mail]
web: www.awal-labs.com
Jennifer Osborn
Laboratory Director
Jose Rocha
QA Officer
INORGANIC ANALYTICAL REPORT
Client: Energy Fuels Resources, Inc.
Project: 3rd Quarter Nitrate 2021
Lab Sample ID: 2108638-012
Client Sample ID: PIEZ-02_08192021
Collection Date: 8/19/2021 93 5h
Received Date: 8/24/2021 940h
Analytical Results
Date
Compound Units Prepared
Chloride mg/L
Nitrate/Nitrite (as N) mg/L
Date
Analyzed
9/7/2021 111 h
8/27/2021 900h
Contact: Tanner Holliday
Method Reporting Analytical
Used Limit Result Qual
E300.0 1.00 14.6
E353.2 0.100 0.110
Report Date: 9/10/2021 Page 15 of 21
All analyses opplicnble to lhe CWA. SOWA. and RCRA are perfomied in accordance to NELAC protocols. Pt!n111ml sompJing info,m.u.1«-is localed on lhe attached COC. Confidenlial Business lnfonmuion: This repon is prO\·idc:d ft'lr tho rul~ht use of the
~ddressee Pri, ile~es o.r sub,_5eq~enl ~~e of lhe ~~1e or I his _co1~pany or M) ~mber of its slnff, or relJl•Jducti~ ~r 1his repo~ in ~00~1iectloo~ with the a~yertisemenl. p~~motio;n ~r sale of :U!'~ .~rodl~cl or P~?ccss, ~r in ~nn~c~ion w!lh l~ r~pubhc:mon of rhis report
INORGANIC ANALYTICAL REPORT
3440 South 700 West
Client: Energy Fuels Resources, Inc.
Project: 3rd Quarter Nitrate 2021
Lab Sample ID: 2108638-014
Client Sample ID: PIEZ-03A_08192021
Collection Date: 8/19/2021 1012h
Received Date: 8/24/2021 940h
Analytical Results
Compound Units
Date
Prepared
,alt Lake City, UT 84119 Chloride mg/L
mg/L
Phone: (80 I) 263-8686
Toll Free: [phone]
Fax: [phone]
!-mail: [e-mail]
web: www.awal-labs.com
Jennifer Osborn
Laboratory Director
Jose Rocha
QA Officer
Nitrate/Nitrite (as N)
Date
Analyzed
9/7/2021 159h
8/27/2021 902h
Contact: Tanner Holliday
Method
Used
E300.0
E353.2
Reporting
Limit
2.00
0.100
Analytical
Result
81.5
11.2
Qual
Report Date: 9/10/2021 Page 17 of21
All anal) ses applicable lo the CWA, SOWA. and RCRA are perfom1ed in accordance lo NELAC protocols Pertinenl sampling inform.atirn) is located on lhe allached COC Confidential Business Information: This report is prO\'ided for 1he c:o..·rhuh c LOe of the
~ddressee Pri, ile~es o.r sub ... seq~enl ~~e of the ~~1e of lhis _co1~pany or M) ~mber of its slafT, or reproductio~ ~f this repo~ in ~on~eclion ... "ith lhe ~vertise~ent, p~~motio,n ~r ~ale of ?'!Y. ~rod~ct or p~~ess, ~r in ~nn~!ion w~th th~ r~-p~blkotloct of this repon
3440 South 700 West
;alt Lake City, UT 84119
Phone: (80 I) 263-8686
Toll Free: [phone]
Fax: [phone]
!-mail: [e-mail]
web: www.awal-labs.com
Jennifer Osborn
Laboratory Director
Jose Rocha
QA Officer
INORGANIC ANALYTICAL REPORT
Client: Energy Fuels Resources, Inc.
Project: 3rd Quarter Nitrate 2021
Lab Sample ID: 2108638-005
Client Sample ID: TWN-01_08182021
Collection Date: 8/18/2021 1016h
Received Date: 8/24/2021 940h
Analytical Results
Date
Compound Units Prepared
Chloride mg/L
Nitrate/Nitrite (as N) mg/L -----
Date
Analyzed
9/6/2021 1959h
8/24/2021 1342h
Contact: Tanner Holliday
Method Reporting Analytical
Used Limit Result Qual
E300.0 1.00 35.7
E353.2 0.100 2.47
Report Date: 9/ I 0/2021 Page 8 of 21
All anal) ses applicable lo lhe CWA. SOWA. and RCRA are perfoITT1ed in accordance to NELAC protocols. Pertinent sampling information is located on the nltached COC Confidential Business lnfonmllion: This report is provided for 1he exclusi,·e use of the
~ddressee Pri, ile~es o.f sub .. seq~enl ~1~e of the ~~e of I his ,con:ip1my or an) 1~mber of ils slaff, or reproductio~ ~f this repo~ in ~on-?eclion,, wilh the ~vertisemenl, P~?moli~n ~r ~a1e of!"!~. ~rodl~ct or p~ocess, ~r in ~nn:,c~ion ''!lh 1h~ r~-publication of !his report
3440 South 700 West
;alt Lake City, UT 84119
Phone: [phone]
Toll Free: [phone]
Fax: [phone]
!-mail: [e-mail]
web: www.awal-labs.com
Jennifer Osborn
Laboratory Director
Jose Rocha
QA Officer
INORGANIC ANALYTICAL REPORT
Client: Energy Fuels Resources, Inc.
Project: 3rd Quarter Nitrate 2021
Lab Sample ID: 2108638-006
Client Sample ID: TWN-02_08182021
Collection Date: 8/18/2021 1025h
Received Date: 8/24/2021 940h
Analytical Results
Date
Compound Units Prepared
Chloride mg/L
Nitrate/Nitrite (as N) mg/L -----
Date
Analyzed
9/6/2021 2023h
8/24/202 I 1343h
Contact: Tanner Holliday
Method Reporting Analytical
Used Limit Result Qual
E300.0 1.00 58.9
E353.2 0.100 15.3 -----
Report Date: 9/10/2021 Page 9 of21
All analyses applicable to 1lu:· CWA. SOWA. ~d RCRA aie perfom1ed in accordance lo NELAC protoc:olL Penmen! samplin.i; infotruat,on is localed on the allached COC. Conlidenriol BlKin~ss lnformolion: This repon is pro,1lded for 1hett"<ch:t1we use of1he
~ddressee. Pririle~es c,riubf t?Q~enl .u~e oflltt:' ~~?~1eoflhis,con_ipo11y or nny ~mber of ils stnff, or rciptoducl b~! ~f lllis tC!~! In ~"?~Hoo .. wilh the u~~·ertisen:ienl. P:?motio_n ~r sale of ~9 J?l-od~cl or p~~cess. ~r in ~nn~c~ion w~lh lh~ r~•pubJicmion oflhis report
3440 South 700 West
;alt Lake City, UT 84119
Phone:[phone]
Toll Free: [phone]
Fax: [phone]
!-mail: [e-mail]
web: www.awal-labs.com
Jennifer Osborn
Laboratory Director
Jose Rocha
QA Officer
INORGANIC ANALYTICAL REPORT
Client: Energy Fuels Resources, Inc.
Project: 3rd Quarter Nitrate 2021
Lab Sample ID: 2108638-011
Client Sample ID: TWN-03 _ 08192021
Collection Date: 8/19/2021 922h
Received Date: 8/24/2021 940h
Analytical Results
Date
Compound Units Prepared
Chloride mg/L
Nitrate/Nitrite (as N) mg/L
Date
Analyzed
9/7/2021 04 7h
8/27/2021 1002h
Contact: Tanner Holliday
Method Reporting Analytical
Used Limit Result Qual
E300.0 2.00 146
E353.2 0.200 24.3
Report Date: 9/10/2021 Page 14 of 21
All analyses applicable to the CWA, SOWA. And RCR..,\ are performed in accordance lo NELAC protocols Pertinen1 sampling information is located on the allached COC Conlidenlial Business Informal ion: This report is pro,•ided for 1he exclusirn use or1he
~ddressee. Pri,·ile~es of sub~seq~enl ~~e or1hc-?,~N o.r1his _co,~pany or any ~mber of ils staff, or repr,)ductio~ ~fthis repo~ in ~on~ect10n~ ,d1h the n~\'ertisemenl. P~?motio_n or sale of ?1!Y. ~rod~ct or P~?Cess, ~r in :<'"n~c!ion w~lh lh~ r:-pul>licalion or 1his report
INORGANIC ANALYTICAL REPORT
3440 South 700 West
Client: Energy Fuels Resources, Inc.
Project: 3rd Quarter Nitrate 2021
Lab Sample ID: 2108638-004
Client Sample ID: TWN-04_08182021
Collection Date: 8/18/2021 919h
Received Date: 8/24/2021 940h
Analytical Results
Compound Units
Date
Prepared
,alt Lake City, UT 84119 Chloride mg/L
mg/L
Phone: [phone]
Toll Free: [phone]
Fax: [phone]
:-mail: [e-mail]
web: www.awal-labs.com
Jennifer Osborn
Laboratory Director
Jose Rocha
QA Officer
Nitrate/Nitrite (as N)
Date
Analyzed
9/6/2021 1935h
8/24/2021 1338h
Contact: Tanner Holliday
Method
Used
E300.0
E353.2
Reporting
Limit
l.00
0.100
Analytical
Result
23.7
1.28
Qua!
Report Date: 9/10/2021 Page 7 of 21
All analyses applicabl~ 10 lhe CWA. SOWA. MU RCRA are performed in Accordance to NELAC p,otocols. l',anm,ml sampling informalion is located on the allached COC. Confidentinl Business (nformation: This report is prm•ided for1he otlu..,ne 111e of the
~ddressee. Pri,·ile~es a[ su~seq~ent ~1~e of the n~,:nc or lhis ,crn~pnny or any ~1!1ber of its staff, or rq1foducll~ ~r1his ,q,oa! in ~on~eclion,. \\ilh lhe ~~1ertisemenl, P~?mo1io_n ~r saJe of ~!Y. ~rodl~ct or P~?cess, ~r in ~onn:c~ion w!lh 11~ i~publicNion or this report
INORGANIC ANALYTICAL REPORT
3440 South 700 West
Client: Energy Fuels Resources, Inc.
Project: 3rd Quarter Nitrate 2021
Lab Sample ID: 2108638-010
Client Sample ID: TWN-07 _08192021
Collection Date: 8/19/2021 913h
Received Date: 8/24/2021 940h
Analytical Results
Compound Units
Date
Prepared
,alt Lake City, UT 84119 Chloride mg/L
mg/L
Phone:[phone]
Toll Free: [phone]
Fax: [phone]
!-mail: [e-mail]
web: www.awal-labs.com
Jennifer Osborn
Laboratory Director
Jose Rocha
QA Officer
Nitrate/Nitrite (as N)
Date
Analyzed
9/7/2021 023h
8/27/2021 855h
Contact: Tanner Holliday
Method
Used
E300.0
E353.2
Reporting
Limit
2.00
0.100
Analytical
Result
121
15.1
Qual
Report Date: 9/10/2021 Page 13 of21
All anal) ses applicable to lhe CW A_ SDWA and RCRA are perfom1cd in accord11T1ce to NELAC protocols Pertinent sampling informalion is localed on the auached COC Confidential Business lnformarion: This report is provided for lhe exclusi,·e use of lhe
~dressee Prh ile~es o_f sub,_seq~enl ~~e of the ~~e or lhis ,con:ipany or an) ~l!1ber of its staff, or reproductio~ ~f this repo~ in ~on~ection~ ,,itJ1 the a~vertisement, P~?molio_n o_r ~ale of ?1~Y. ~rod~ct or p1:?ces_s, ~r in ~onn~c~ion w\lh 1h~ r~-publica1io11 of lhis report
American West
ANALYTICAL LABORATORIES
3440 South 700 West
~alt Lake City, UT 84119
Phone: [phone]
Toll Free: [phone]
Fax: [phone]
~-mail: [e-mail]
web: www.awal-labs.com
Jennifer Osborn
Laboratory Director
Jose Rocha
QA Officer
INORGANIC ANALYTICAL REPORT
Client: Energy Fuels Resources, Inc. Contact: Tanner Holliday
Project: 3rd Quarter Nitrate 2021
Lab Sample ID: 210863 8-002
Client Sample ID: TWN-18_08172021
Collection Date: 8/17/2021 917h
Received Date: 8/24/2021 940h
Analytical Results
Date Date Method Reporting Analytical
Compound Units Prepared Analyzed Used Limit Result Qual
Chloride mg/L 9/6/2021 1846h £300.0 1.00 42.9
Nitrate/Nitrite (as N) mg/L 8/24/2021 1332h £353.2 0.100 0.199 §' -------
1 -Matrix spike recovery indicates matrix interference. The method is in control as indicated by the LCS.
Report Date: 9/10/2021 Page S of21
All analyses applicable to lhe CWA. SDWA. and RCRA are perfonned in accordance to NELA 'J)t<tlocol:i Pellrntinl sampling information is located on the allached COC. Confidential l3W:lt'l(Ss Information: This repon is provided (or 1hc exclusive use of the
~dd1essee Prfrile~es o.fsu~seq~enl ~•~ of lhe ~~le of this_co~pany or any •~1!9bel' of ils slaf[ or rcpro<hJCli~ ~rlhis repo~ in _con~ection,. \\ilh lhe ~~1ertisemenl. P~?moli~ ~r ~aJe of!"J ~rodL~cl or p1:?Cess. ~r in 7°nn:_c~ion w~th 1h~ •~·pLJblication of this report
3440 South 700 West
,alt Lake City, UT 84119
Phone: [phone]
Toll Free: [phone]
Fax: (80 I) 263-8687
!-mail: [e-mail]
web: www.awal-labs.com
Jennifer Osborn
Laboratory Director
Jose Rocha
QA Officer
INORGANIC ANALYTICAL REPORT
Client: Energy Fuels Resources, Inc.
Project: 3rd Quarter Nitrate 2021
Lab Sample ID: 2108638-001
Client Sample ID: TWN-18R _ 08172021
Collection Date: 8/17/2021 845h
Received Date: 8/24/2021 940h
Analytical Results
Date
Compound Units Prepared
Chloride mg/L
Nitrate/Nitrite (as N) mg/L
Date
Analyzed
9/6/2021 I 822h
8/24/2021 1336h
---
Contact: Tanner Holliday
Method Reporting Analytical
Used Limit Result Qual
E300.0 1.00 < 1.00
E353.2 0.100 < 0.100
Report Date: 9/10/2021 Page 4 of21
All an□\) ses applicable lo lhe CW A. SDWA. and RCRA are performed in accordance lo NELAC prolocols. Pcnincnl s111npUns-in(l)f,n.111ion is located on the attached COC. Confidential Dusmoss Informal ion: This report is pro,•ided for the c~chim e use of 1he
~ddressee Pri, ile~es o_r sub .. seq~ent ~~e of the ~?1:"e of this _co~p.iny or nn) ~mber of its slaff, or reproducth.'H~ ~~ this l't:I~ in JOh!U.."tl1on~ "·ith lhe a~~•ertisemenl, P~?molio_n ~r ~aJe of?'!) l!'odt~cl or p1:?Cess. ~r in ~nn~c~ion w!lh th~ r1;-publicollnn of this repor1
INORGANIC ANALYTICAL REPORT
American West
ANALYTICAL LABORATORlfS
3440 South 700 West
Client: Energy Fuels Resources, Inc.
Project: 3rd Quarter Nitrate 2021
Lab Sample ID: 2108638-009
Client Sample ID: TWN-20_08192021
Collection Date: 8/19/2021 905h
Received Date:
Analytical Results
Compound
8/24/2021 940h
Units
Date
Prepared
,alt Lake City, UT 84119 Chloride mg/L
mg/L
Phone: [phone]
Toll Free: [phone]
Fax: [phone]
~-mail: [e-mail]
web: www.awal-labs.com
Jennifer Osborn
Laboratory Director
Jose Rocha
QA Officer
Nitrate/Nitrite (as N) ---
Date
Analyzed
9/6/2021 2359h
8/27/2021 849h
Contact:
Method
Used
E300.0
E353.2
Tanner Holliday
Reporting
Limit
2.00
0.100
Analytical
Result
35.3
0.960
Qual
--------------
Report Date: 9/10/2021 Page 12 of21
All analyses applicable to lhe CWA. SDWA. and RCRA are perfom1ed m accordance lo NELAC ptotoc-611 PC!runa,1 sampling information is located 0111.he attached COC. Conlidenlial Business Jnrormuuon: This report is provided for 1he exclusive use oCthe
~dressee. Pri,·ile~es arsub .. scq~enl ~~e of !he ~:u:ne oflhis .oo~pany or any ~mber ofils slaff, or rC'J)roduc.u~ ~~lhis repo~ in ~on~eclion,. \\•ilh the a~~'ertisernenl. P~?moli~ or ~ale of~!), ~Hodl!CI o, ~,!X°ess, ~r in ~nn~c!ion w!lh 1h~ r1;~publicatio11 or this report
INORGANIC ANALYTICAL REPORT
3440 South 700 West
Client:
Project:
Lab Sample ID:
Energy Fuels Resources, Inc.
3rd Quarter Nitrate 2021
210863 8-008
Client Sample ID: TWN-2 l _ 08192021
Collection Date: 8/19/2021 855h
Received Date:
Analytical Results
Compound
8/24/2021 940h
Units
Date
Prepared
Date
Analyzed
~alt Lake City, UT 84119 Chloride mg/L
mg/L
9/6/2021 224 7h
8/24/202 l 1345h
Phone: [phone]
Toll Free: [phone]
Fax:[phone]
!-mail: [e-mail]
web: www.awal-labs.com
Jennifer Osborn
Laboratory Director
Jose Rocha
QA Officer
Nitrate/Nitrite (as N) ------------
Contact: Tanner Holliday
Method
Used
E300.0
E353.2
Reporting
Limit
2.00
0.100
Analytical
Result
40.5
1.16
Qual
Report Date: 9/10/2021 Page I I of 21
All analyses applicable to the 'W,\. SOWA. and RCRA !lre performed in accordance to NELAC protocolt 11cnim111t stunpllng inforrruuioo is located on Lhe altached COC. Confiden1ial Business Informalion: This report is provided for \he e"dushc Ufe of the
~ddressee. Pri,·ile~es o,f sub,.5eq~n1 ~~ of the ~?1_11e of lhis .co~P<Jny or nnr ~~ber of its staff, or rep1oducll1J!~ ~r1his fcpot! in ~.«Hon~ with Lhe ~~1er1ise~enl. P~?motio,n ~r sale of ~~Y. ~rod~cl or p1:?Cess. ~r in ~onn:_c!ion ,,·!th th~ r~-pubJicnUon or this report
American West
ANALYTICAL LABORATORIES
3440 South 700 West
~alt Lake City, UT 84119
Phone:[phone]
foll Free: [phone]
Fax: (80 I) 263-8687
~-mail: [e-mail]
web: www.awal-labs.com
Jennifer Osborn
Laboratory Director
Jose Rocha
QA Officer
INORGANIC ANALYTICAL REPORT
Client: Energy Fuels Resources, Inc.
Project: 3rd Quarter Chlorofonn 2021
Lab Sample ID: 2108726-014
Client Sample ID: TW4-22_08242021
Collection Date: 8/24/2021 935h
Received Date: 8/26/2021 I 025h
Analytical Results
Date
Compound Units Prepared
Chloride
Nitrate/Nitrite (as N)
mg/L
mg/L -----
Date
Analyzed
9/9/202 I 658h
8/2 7/2021 1046h
Contact: Tanner Holliday
Method Reporting Analytical
Used Limit Result Qual
E300.0 10.0 410
E353.2 0.500 35.1 ----
Report Date: 9/13/2021 Page 19 of 46
All analyses applicabl~ 10 lhc CWA, SOWA. and RCRA are performed in accordance 10 NE LAC (N-otocols. Peninenl SJ1mpllng infom1.11Lioo is loc:,ted on the all ached COC. onridcntial Bujfness Information: This report is pro\'ided for the e.~du~h'o t..$e or the
~ddressee. P,frilt~es of sub_:;t'(l~I ~ cir lhe ~~e of this ,co1~p,my or nny ~mber of its slaIT, or raproduclio~ ~~ this 'CVM! in ~on!1e1;11rx~ with Lhe a~~1er1ise~e111, P~?moli0!1 ~ ~Ille of~!~: ~rod~ct or P~?Cess, ~r in ~nni;~~ion w!lh th~ r~-pl!blktUion of lhis report
American West
ANALYTICAL LABORATORlfB
3440 South 700 West
;alt Lake City, UT 84119
Phone:[phone]
Toll Free: [phone]
Fax: [phone]
!•mail: [e-mail]
web: www.awal-labs.com
Jennifer Osborn
Laboratory Director
Jose Rocha
QA Officer
INORGANIC ANALYTICAL REPORT
Client: Energy Fuels Resources, Inc.
Project: 3rd Quarter Chloroform 2021
Lab Sample ID: 2108726-003
Client Sample ID: TW4-24_08242021
Collection Date: 8/24/2021 926h
Received Date: 8/26/2021 1025h
Analytical Results
Date
Compound Units Prepared
Chloride mg/L
Nitrate/Nitrite (as N) mg/L ------
Date
Analyzed
9/7/2021 800h
8/27/2021 1003h ----
Contact: Tanner Holliday
Method Reporting Analytical
Used Limit Result Qual
E300.0 10.0 1,010
E353.2 0.500 26.7
Report Date: 9/ 13/202 I Page 8 of 46
All am1l,.·ses applicable to lhe CWA_ SOWA. and RCRA are performed in accordance to NELAC prolOCOls. Penint,,l samplin~ infomant oo is loc11ted on the altached COC. Confidenlial Business Inrom~uorr This report is pr°''ided for the e,'\"(lusi"re use of 1he
~ddressee Pri, ile~es or sub__seq~enl ?~e of lhe ~~t of I his ,co1~pony or nny l~~ber of ils slarf, or J(!producti~ ~f this rep~~ in ~n~l«:llon. \\'ilh lhe ZM!''Cr1ise~ent, P~?motio_n ~r ~ale of~!)'. ~rodl~CI Qf Jf~?C-CSS, ~r in ~nm:c~ion w~lh 1h~ r~-publicnt.lOD of this repon
American West
AN4LYTICAL LABORATORl18
3440 South 700 West
;alt Lake City, UT 84119
Phone: (80 l) 263-8686
Toll Free: [phone]
Fax: [phone]
!-mail: [e-mail]
web: www.awal-labs.com
Jennifer Osborn
Laboratory Director
Jose Rocha
QA Officer
INORGANIC ANALYTICAL REPORT
Client: Energy Fuels Resources, Inc. Contact: Tanner Holliday
Project: 3rd Quarter Chloroform 2021
Lab Sample ID: 2108726-001
Client Sample ID: TW4-25_08242021
Collection Date: 8/24/2021 915h
Received Date: 8/26/2021 1025h
Analytical Results
Date Date Method Reporting Analytical
Compound Units Prepared Analyzed Used Limit Result Qual
Chloride mg/L 9/7/2021 624h E300.0 5.00 69.3
Nitrate/Nitrite (as N) mg/L 8/27/2021 952h E353.2 0.100 0.793
' -Matrix spike recovery indicates matrix interference. The method is in control as indicated by the LCS.
Report Date: 9/13/2021 Page 6 of 46
All analyses applicable to lhe CWA, SDWA. and RCRA are perfomled in accordance to NELAC protocols Pertinenl sampling information is located on tJ,e altached COC Confidential Business Inrormalion: This repon is proYided for the exclusi\·e use of the
~ddressee. Ptfrile~es or su~seq~enl ~e of lhe ~~e of this _cor1;1pimy or .in) •~f!lbel of its slalT, or reproduclio~ ~f this repo~ in ~on?eclion,. ll-ilh lhe o~\'ertisement, P~?moli~n ~r saJe of ~!Y ~rod~t or p~ouss, ~,-in ~nn:c!ion w~th th~ t~·"':'blication or this report
3440 South 700 West
;alt Lake City, UT 84119
Phone: [phone]
Toll Free: [phone]
Fax: [phone]
!-mail: [e-mail]
web: www.awal-labs.com
Jennifer Osborn
Laboratory Director
Jose Rocha
QA Officer
INORGANIC ANALYTICAL REPORT
Client: Energy Fuels Resources, Inc.
Project: 3rd Quarter Nitrate 2021
Lab Sample ID: 2108638-007
Client Sample ID: TWN-60_08182021
Collection Date: 8/18/2021 715h
Received Date: 8/24/2021 940h
Analytical Results
Date
Compound Units Prepared
Chloride mg/L
Nitrate/Nitrite (as N) mg/L
Date
Analyzed
9/6/2021 2047h
8/24/2021 1344h
Contact: Tanner Holliday
Method Reporting Analytical
Used Limit Result Qual
E300.0 1.00 < 1.00
E353.2 0.100 < 0.100
Report Date: 9/10/2021 Page 10 of21
All analyses applicoble lo !he CWA. SOWA. and RCRA are perfom1ed in accordance to NE LAC pn,\U)Cols.. PC/'lment st1mplin11, i11ronn.'l.t1011 is localed on t11e nuached COC. Confiden1iol BuRnos lnform:auon This report is pro\'ided (or tho exclusiYe use of 1he
~ddressee. PriYile~es o.r sub__seq~enl ~~e of the ~?1,l'e of lhis ,co,~pany or any ~~ber of its staff, ot rcptodUC!li~) ~~lhis tqK>~ in foc,?«fia.~ "ith lhe a~~'er1ise~nl. p~~molio_n ~r ~ale of~~): '?'odi~cl or P'~OC~ ~r in ~nn:c!ion \\'!lh 1h~ N;"Publicalion of this report
American West
ANALYTICAL LABORATORIE8
3440 South 700 West
;alt Lake City, UT 841 19
Phone:[phone]
Toll Free: [phone]
Fax:[phone]
!-mail: [e-mail]
web: www.awal-Iabs.com
Jennifer Osborn
Laboratory Director
Jose Rocha
QA Officer
INORGANIC ANALYTICAL REPORT
Client: Energy Fuels Resources, Inc.
Project: 3rd Quarter Chloroform 2021
Lab Sample ID: 2108726-016
Client Sample ID: TW4-60_08242021
Collection Date: 8/24/2021 1300h
Received Date: 8/26/2021 1025h
Analytical Results
Date
Compound Units Prepared
Chloride mg/L
Nitrate/Nitrite (as N) mg/L
Date
Analyzed
9/9/2021 746h
8/27/2021 1030h
Contact: Tanner Holliday
Method Reporting Analytical
Used Limit Result Qual
E300.0 1.00 < 1.00
E353.2 0.100 < 0.100
Report Date: 9/13/2021 Page 21 of 46
All analyses applicable to lhe CWA. SOW A, nnd RCRA are perfom1ed in accordance to NELAC protocols Pertinent sampling information is located ot1 the altached COC Confidential Business Information: This report is pro"ided for the e.xclush e use of the
~dressee Pri, ile~es o~ sub,,seq~ent ~~e of the ~~e of lhis .con_1pnny or any ~~ber of its staff, or reproduclio~ ~f this repo~ in ~~ection .. ,1,,ith the a~~ ertisement, P~?motio,n or sale of~!) ~rodl~l or p~ocess, ~r in ~nn~c~ion w!lh 1h~ r~-publication of lhis report
INORGANIC ANALYTICAL REPORT
American West
ANALYTICAL LABORATORIE8
3440 South 700 West
Client: Energy Fuels Resources, Inc.
Project: 3rd Quarter Nitrate 2021
Lab Sample ID: 2108638-003
Client Sample ID: TWN-65 _ 08172021
Collection Date: 8/ l 7 /2021 917h
Received Date: 8/24/2021 940h
Analytical Results
Compound Units
Date
Prepared
,alt Lake City, UT 84119 Chloride mg/L
mg/L
Phone:[phone]
Toll Free: [phone]
Fax: (80 l) 263-8687
~-mail: [e-mail]
web: www.awal-labs.com
Jennifer Osborn
Laboratory Director
Jose Rocha
QA Officer
Nitrate/Nitrite (as N) ------------
Date
Analyzed
9/6/2021 1911h
8/24/2021 1337h
Contact:
Method
Used
E300.0
E353.2
Tanner Holliday
Reporting
Limit
1.00
0.100 -----
Analytical
Result
44.1
0.208
Qual
Report Date: 9/10/2021 Page 6 of 21
All anal} ses applicable to !he CWA. SDWA, and RCRA are performed in accordance lo NELAC protocols. Per1inent sampling information is located on Lhe attached COC. ConUdential Business ln(ormo.lmn: This repon is provided ror the exclusiYe use of the
~ddressee Pri, ile~es a: sub~seq~nt .u.se of the ~:u:ne of this _con:ipany or any ~mber of its staff, or reproductio~ ~~ this repo~ in ~on?ection~ \\ilh the a~~1ertisemenl, P~?molio_n ~r ~ale of ~~Y. ~rodl~cl or p~OC"ess. ~r in ~onn~c~ion \\'!lh 1h~ ,~-publication of this report
3440 South 700 West
;alt Lake City, UT 84119
Phone:[phone]
Toll Free: [phone]
Fax: [phone]
~-mail: [e-mail]
web: www.awal-labs.com
Jennifer Osborn
Laboratory Director
Jose Rocha
QA Officer
Tanner Holliday
Energy Fuels Resources, Inc.
6425 South Hwy 191
Blanding, UT 84511
TEL: [phone]
RE: 3rd Quarter Nitrate 2021
Dear Tanner Holliday: Lab Set ID: 2108638
American West Analytical Laboratories received sample( s) on 8/24/2021 for the analyses
presented in the following report.
American West Analytical Laboratories (A WAL) is accredited by The National
Environmental Laboratory Accreditation Program (NELAP) in Utah and Texas; and is
state accredited in Colorado, Idaho, New Mexico, Wyoming, and Missouri.
All analyses were performed in accordance to the NELAP protocols unless noted
otherwise. Accreditation scope documents are available upon request. If you have any
questions or concerns regarding this report please feel free to call.
The abbreviation "Surr" found in organic reports indicates a surrogate compound that is
intentionally added by the laboratory to determine sample injection, extraction, and/or
purging efficiency. The "Reporting Limit" found on the report is equivalent to the
practical quantitation limit (PQL). This is the minimum concentration that can be
reported by the method referenced and the sample matrix. The reporting limit must not be
confused with any regulatory limit. Analytical results are reported to three significant
figures for quality control and calculation purposes.
Thank You,
Approved by:
J G Digitally signed 0$8 . by Jose G.
Rocha Rocha Date: 2021.09.10
13:38:41 -06'00'
Laboratory Director or designee
Report Date: 9/10/2021 Page I of21
All anal~ ses applicable to the CWA. SOWA. and RCRA are performed in accordance to NELAC protocols Pertinenl sampling inrormalion ls located on 1he au ached COC Confidenllal Business Inf ormalion: This repon is prm•ided for the exclusiYe use of the
~ddressee Pr1'·ile~es o.r sub~seq~enl ~:'e of 1he ~~,e of this .co1~pnny or atl) ~mbe1 of Its slaIT, or reproductio~ ~f this repo~ in ,con~eclion,. \\ith !he a~vertisemenl, p~~moti~n o_r ~ale of?'~) ~rod~ct or p~~cess, ~r in ~onn~!ion w!lh lh~ r~-pub/ication of lhis repon
SAMPLE SUMMARY
Client: Energy Fuels Resources, Inc. Contact: Tanner Holliday
ANALYTICAL LADORATORIES Project: 3rd Quarter Nitrate 2021
Lab Set ID: 2108638
Date Received: 8/24/2021 940h
Lab Sample ID Client Sample ID Date Collected Matrix Analysis
3440 South 700 West
2108638-00lA TWN-18R 08172021 8/17/2021 845h Aqueous Anions, E300.0
;alt Lake City, UT 84 I 19 2108638-001 B TWN-l 8R 08172021 8/17/2021 845h Aqueous Nitrite/Nitrate (as N), E353.2
2108638-002A TWN-18 08172021 8/17/2021 917h Aqueous Anions, E300.0
2108638-0028 TWN-18 08172021 8/17/2021 917h Aqueous Nitrite/Nitrate (as N), E353.2
Phone: (80 I) 263-8686 210863 8-003A TWN-65 08172021 8/17/2021 917h Aqueous Anions, E300.0
Toll Free: [phone] 2108638-003B TWN-65 08172021 8/17/2021 917h Aqueous Nitrite/Nitrate (as N), E353.2
Fax: [phone] 2108638-004A TWN-04 08182021 8/18/2021 919h Aqueous Anions, E300.0
2108638-004B TWN-04 08182021 8/18/2021 919h Aqueous Nitrite/Nitrate (as N), E353.2
!-mail: [e-mail] 2108638-005A TWN-01 08182021 8/18/2021 1016h Aqueous Anions, E300.0
2108638-005B TWN-01_08182021 8/18/2021 1016h Aqueous Nitrite/Nitrate (as N), E353.2 web: www.awal-labs.com 210863 8-006A TWN-02 08182021 8/18/2021 1025h Aqueous Anions, E300.0
2108638-006B TWN-02 08182021 8/18/2021 1025h Aqueous Nitrite/Nitrate (as N), E353.2
2108638-007 A TWN-60 08182021 8/18/2021 715h Aqueous Anions, E300.0
Jennifer Osborn 210863 8-007B TWN-60 08182021 8/18/2021 715h Aqueous Nitrite/Nitrate (as N), E353.2
Laboratory Director 2108638-008A TWN-21 08192021 8/19/2021 855h Aqueous Anions, E300.0
2108638-0088 TWN-21 08192021 8/19/2021 855h Aqueous Nitrite/Nitrate (as N), E353.2
Jose Rocha 210863 8-009 A TWN-20 08192021 8/19/2021 905h Aqueous Anions, E300.0
QA Officer 210863 8-009B TWN-20 08192021 8/19/2021 905h Aqueous Nitrite/Nitrate (as N), E353.2
2108638-0l0A TWN-07 08192021 8/19/2021 913h Aqueous Anions, E300.0
2108638-010B TWN-07 08192021 8/19/2021 913h Aqueous Nitrite/Nitrate (as N), E353.2
2108638-01 lA TWN-03 08192021 8/19/2021 922h Aqueous Anions, E300.0
2108638-01 lB TWN-03 08192021 8/19/2021 922h Aqueous Nitrite/Nitrate (as N), E353.2
2108638-012A PIEZ-02 08192021 8/19/2021 935h Aqueous Anions, E300.0
2108638-012B PIEZ-02 08192021 8/19/2021 935h Aqueous Nitrite/Nitrate (as N), E353.2
2108638-0BA PIEZ-01 08192021 8/19/2021 948h Aqueous Anions, E300.0
2108638-013B PIEZ-0I_08192021 8/19/2021 948h Aqueous Nitrite/Nitrate (as N), E353.2
2108638-014A PIEZ-03A 08192021 8/19/2021 1012h Aqueous Anions, E300.0
2 I 08638-014B PIEZ-03A 08192021 8/19/2021 1012h Aqueous Nitrite/Nitrate (as N), E353.2
Report Date: 9/10/2021 Page 2 of21
All analyses applicable to lhe CWA. SOWA and RCRA are perfom1ed in accordance to NE LAC protocols. Pertinent sampling information is located on lhe allached COC Confidential Business Information: This report is provided for the C.\:c:l®,t us.e of 1he
~cldressee. Pririle~es o_r sub__seq~enl ~':'e of 1he ~?',ne of this _cOl~pany or any •~~mber of its staff, or repri>ducfio~ ~r this repo~ in ~o~eclion .. "ilh the ~vertise~ent, P~?molio_n or ~ale of ~!Y. ~rod~cl or P~?CCSS, ~r in ~nn~~ion \\'!lh 1h~ r~-pubhen1ion of lhis repon
3440 South 700 West
)alt Lake City, UT 84119
Phone: (80 I) 263-8686
Toll Free: [phone]
Fax: (80 I) 263-8687
!-mail: [e-mail]
web: www.awal-Iabs.com
Jennifer Osborn
Laboratory Director
Jose Rocha
QA Officer
Inorganic Case Narrative
Client:
Contact:
Energy Fuels Resources, Inc.
Tanner Holliday
Project:
Lab Set ID:
Sample Receipt Information:
Date of Receipt:
Date of Collection:
Sample Condition:
C-O-C Discrepancies:
3rd Quarter Nitrate 2021
2108638
8/24/2021
8/17-8/19/2021
Intact
None
Holding Time and Preservation Requirements: The analysis and preparation of all
samples were performed within the method holding times. All samples were properly
preserved.
Preparation and Analysis Requirements: The samples were analyzed following the
methods stated on the analytical reports.
Analytical QC Requirements: All instrument calibration and calibration check
requirements were met. All internal standard recoveries met method criterion.
Batch QC Requirements: MB, LCS, MS, MSD, RPD:
Method Blanks (MB): No target analytes were detected above reporting limits,
indicating that the procedure was free from contamination.
Laboratory Control Samples (LCS): All LCS recoveries were within control
limits, indicating that the preparation and analysis were in control.
Matrix Spike / Matrix Spike Duplicates (MS/MSD): All percent recoveries and
RPDs (Relative Percent Differences) were inside established limits, with the
following exception: the MS percent recovery for Nitrate-Nitrite on sample
210863 8-002B was outside of the control limits due to sample matrix interference.
Corrective Action: None required.
Report Date: 9/10/2021 Page 3 of21
All analyses applicable lo lhe CWA. SDWA. and RCRA are perfomted in accordance to NELAC protocols Pertinent sampling information is locc1ted 011 the attached COC Confidenlial Business lnformalion: This repor1 is pro,·ided for 1he exclnsi\·e use of lhe
~ddressee Pri, ile~es o:sub~seq~ent ~~e 0[1he ~~e of lhis _con,1pa11y or nn)' 1~mber or its staff, or reproduclio~ ~f this repo~ in ~on~1eclion,. \\ilh lhe a~vertisement, P~?molio_n ~r saJe of ?1!Y. ~rod1~c1 or P~?cess, ~r in ~nn~c~ion w~Lh th7 r~-publica1io11 of this repon
3440 South 700 West
Salt Lake City, UT 84119
Phone: [phone], Toll Free: [phone], Fax: [phone]
e-mail: [e-mail], web: www.awal-labs.com
QC SUMMARY REPORT
Client: Energy Fuels Resources, Inc. Contact: Tanner Holliday
WC Lab Set ID: 2108638
Project: 3rd Quarter Nitrate 2021
Analyte Result Units Method
Lab Sample ID: LCS-R156359 Date Analyzed: 09/06/2021 1758h
Test Code: 300.0-W
Chloride 5.06 mg/L E300_0
Lab Sample ID: LCS-R155863 Date Analyzed: 08/24/2021 1311 h
Test Code: NO2/N03-W-353.2
Nitrate/Nitrite (as N) 1.06 mg/L E353 2
Lab Sample ID: LCS-R156020 Date Analyzed: 08/27/2021 840h
Test Code: NO2/NO3-W-353.2
Nitrate/Nitrite (as N) 1.09 mg/L E353.2
MDL
0.0198
0.00541
0.00541
Reporting
Limit
0.100
0.0100
0.0100
Dept:
QC Type: LCS
Amount Spiked Spike Ref.
Amount %REC
5.000 0 IOI
1.000 0 106
1.000 0 109
Limits
90 -110
90 -110
90 -110
Jennifer Osborn
Laboratory Director
Jose Rocha
QA Officer
RPD Ref. RPD
Limit Amt %RPD Qual
Report Date: 9/10/2021 Page 18 of21
analyses applicable to the CWA, SOWA, and RCRA are pcrfonncd in accordonoc 10 NELAC protocols Pertinent sampling information is located on the attached COC Confidential Business lnform:ition: This report is provided for the exclusive use of the addressee. Privileges of subsequent use of tr
ne of this company or any member of its staff, or reproduction of th1s report in con"c:ctlon \\-hh tJ1c advertisement. promotion or sale of any product or process, or in connection with the re-publication of this report for any purpose other than for the addressee will be granted only on contact. This
Client: Energy Fuels Resources, Inc.
Lab Set ID: 2108638
Project: 3rd Quarter Nitrate 2021
Analyte Result
Lab Sample ID: MB-RI56359 Date Analyzed:
Test Code: 300.0-W
Chloride < 0.100
Lab Sample ID: MB-SPLP Date Analyzed:
Test Code: 300.0-W
Chloride < 0.100
Lab Sample ID: MB-R155863 Date Analyzed:
Test Code: N02/N03-W-353.2 ---
Nitrate/Nitrite (as N) < 0.0100
Lab Sample ID: MB-FIL TERED-Rl55863 Date Analyzed:
Test Code: N02/N03-W-353.2 --
Nitrate/Nitrite (as N) < 0.0100
Lab Sample ID: MB-R156020 Date Analyzed:
Test Code: N02/N03-W-353.2 --
Nitrate/Nitrite (as N) < 0.0100
3440 South 700 West
Salt Lake City, UT 84119
Phone: [phone], Toll Free: [phone], Fax: [phone]
e-mail: [e-mail], web: www.awal-labs.com
_QC SUMMARY REPORT
Contact:
Dept:
QC Type:
Reporting Amount Spiked
Tanner Holliday
WC
MBLK
Spike Ref.
Units Method MDL Limit Amount %REC
09/06/2021 1734h
---
mg/L E300.0 0.0198 0.100 -09/07 /202 l 336h
·---
mg/L E300.0 0.0198 0.100
08/24/2021 1310h
------
mg/L E353.2 0.00541 0.0100
08/24/2021 134 7h
---
mg/L E353.2 0.00541 0.0100
08/27/2021 839h
-~
mg/L E353.2 0.00541 0.0100
Limits
-
Jennifer Osborn
Laboratory Director
Jose Rocha
QA Officer
----
RPDRef.
Amt %RPO
--
-
RPD
Limit Qual
Report Date: 9/10/2021 Page 19of21
analyses applicable to the CWA. SDWA, and RCRA are performed in accordance to NELAC protocols Pertinent sampling information is located on the attached COC, Confidential Business [nform!ltion: This report is provided for the exclusive use of the .addressee. Privileges of subsequent use of tl-
ne of this company or any member of its staff, or reproduction of 1his report in connection with the advertisement. promotion or sale of any product or process. or in connection with the re-publication of this report for any purpose other than for the addressee will be granted only on contact. This
Client: Energy Fuels Resources, Inc.
Lab Set ID: 2108638
Project: 3rd Quarter Nitrate 2021
Analyte Result
Lab Sample ID: 2108638-007 AMS Date Analyzed:
Test Code: 300.0-W
Chloride 25.3
Lab Sample ID: 2108638-008AMS Date Analyzed:
Test Code: 300.0-W -
Chloride 295
Lab Sample ID: 2108638-002BMS Date Analyzed:
Test Code: N02/N03-W-353.2 -
Nitrate/Nitrite (as N) 11.3
Lab Sample ID: 2108638-0lOBMS Date Analyzed:
Test Code: NO2/N03-W-353.2
Nitrate/Nitrite (as N) 69.9
3440 South 700 West
Salt Lake City, UT 84119
Phone: [phone], Toll Free: [phone], fa-..:: [phone]
e-mail: [e-mail], web: www.awal-labs.com
_QC SUMMARY REPORT
Reporting
Units Method MDL Limit
09/06/2021 2111 h
mg/L E300.0 0.0990 0.500
09/06/202 I 2311 h
mg/L E300 0 0.990 5.00
08/24/2021 1333h
-
mg/L E353.2 0.0541 0.100
08/27/2021 959h
-
mg/L E353,2 0.270 0.500
Contact: Tanner Holliday
Dept: WC
QC Type: MS
Amount Spiked Spike Ref.
Amount %REC
25.00 0.0325 IOI
250.0 40.5 102
10.00 0.199 Ill
------
50.00 IS.I 110
' -Matrix spike recovery indicates matrix interference. The method is in control as indicated by the LCS.
Limits
90 -110
90-110
90 -110
90 -110
Jennifer Osborn
Laboratory Director
Jose Rocha
QA Officer
RPD Ref. RPD
Amt %RPO Limit Qual
ReportDate: 9/10/2021 Page20of21
analyses applicable to the CWA. SDWA, and RCRA are perfonned in accordance to NE LAC protocols Pertinent sampling information is located on the attached COC Confidential Business lnfonnation: This report is provided for the exclusive use of the addressee. Privileges of subsequent use of tr
ne of this company or any member of its staff, or reproduction of this report in connection with the advertisement. promotion or sale of any product or process. or in connection with the re-publication of this report for any purpose other than for the addressee will be granted only on contact This
3440 South 700 West
Salt Lake City, UT 84119 Jennifer Osborn
Phone: [phone], Toll Free: [phone], Fax: [phone] Laboratory Director
e-mail: [e-mail], web: www.awal-labs.com
Jose Rocha
QA Officer
QC SUMMARY REPORT
Client: Energy Fuels Resources, Inc. Contact: Tanner Holliday
Lab Set ID: 2108638 Dept: WC
Project: 3rd Quarter Nitrate 2021 QC Type: MSD
Reporting Amount Spiked Spike Ref. RPO Ref. RPO
Analyte Result Units Method MDL Limit Amount %REC Limits Amt %RPO Limit Qual
Lab Sample ID: 2108638-007 AMSD Date Analyzed: 09/06/2021 2223h
Test Code: 300.0-W ---
Chloride 26.2 mg/L E300.0 0.0990 0.500 25.00 0.0325 105 90 -110 25.3 3.72 20
Lab Sample ID: 2108638-008AMSD Date Analyzed: 09/06/2021 2335h
Test Code: 300.0-W -----·
Chloride 295 mg/L E300.0 0.990 5.00 250.0 40.5 102 90 -110 295 0.216 20
Lab Sample ID: 2108638-002BMSD Date Analyzed: 08/24/2021 1335h
Test Code: NO2/N03-W-353.2
Nitrate/Nitrite (as N) 11.2 mg/L E353 2 0.0541 0.100 10.00 0.199 110 90 -110 11.3 0.889 10 §
Lab Sample ID: 2108638-0IOBMSD Date Analyzed: 08/27/2021 1001h
Test Code: NO2/NO3-W-353.2
~ --·-----
Nitrate/Nitrite (as N) 68.7 mg/L E353.2 0.270 0.500 50.00 15.1 107 90 -110 69.9 1.65 10
§ -QC limits are set with an accuracy of two significant figures, therefore the recovery rounds to an acceptable value within the control limits.
Report Date: 9/10/2021 Page 21 of21
analyses applicable to the CWA. SDWA, and RCRA are performed in accordance to NELAC protocols Pertinent sampling information is located on the attached COC Confidential Business Information: This report is provided for the exclusive use of the addressee Privileges of subsequent use of ti
ne of this company or any member of its staff, or reproduction of this report in connection with the advertisement. promotion or sale of any product or process. or in connection with the re-pubJication of this report for any purpose other than for the addressee will be granted only on contact This
American West Analytical Laboratories Rpt Emailed: UL
Denison
WORK ORDER Summary WorkOrder: 2108638 Page 1 of2
Client: Energy Fuels Resources, Inc. Due Date: 9/8/2021
Client ID: ENE300 Contact: Tanner Holliday
Project: 3rd Quarter Nitrate 2021 QC Level: Ill WO Type: Project
Comments: QC 3 (no chromatograms). EDD-Denison. CC [e-mail]; (USE PROJECT for special DLs). Do not use "*R_" samples as MS/MSD.; J<..i
Sample ID Client Sample ID Collected Date Received Date Test Code Matrix Sel Storage
2108638-00lA 1WN-18R_08172021 8/17/2021 0845h 8/24/2021 0940h 300.0-W Aqueous df-cl
1 SEL Analytes: CL
2108638-00lB NO2/NO3-W-353.2 df. no2/no3
1 SEL Analytes: N03N02N
2108638-002A lWN-18_08172021 8/17/20210917h 8/24/20210940h 300.0-W Aqueous df. cl
1 SEL Analy_tes: CL
2108638-002B NO2/NO3-W-353.2 df • no2/no3
1 SEL Ana1lt_es: N03N02N
2108638-00JA lWN-65_08172021 8/17/2021 0917h 8/24/2021 0940h 300.0-W Aqueous df. cl
1 SEL Analytes: CL
2108638-00JB NO2/NO3-W-353.2 df-no2/no3
1 SEL Analy_tes: N03N02N
2108638-004A lWN-04_08182021 8/18/2021 0919h 8/24/2021 0940h 300.0-W Aqueous df. cl
1 SEL Analytes: CL
2108638-004B NO2/NO3-W-353.2 df-no2/no3
1 SEL Analytes: N03N02N
2108638-00SA lWN-01_08182021 8/18/2021 1016h 8/24/2021 0940h 300.0-W Aqueous df-cl
1 SEL Analytes: CL
2108638-005B NO2/NO3-W-353.2 df-no2/no3
I SEL Analytes: N03N02N
2108638-006A lWN-02_08182021 8/18/20211025h 8/24/2021 0940h 300.0-W Aqueous df-cl
1 SEL Ana/ytes: CL
2108638-006B NO2/NO3-W-353.2 df-no2/no3
1 SEL Analytes: N03N02N
2108638-00?A TWN-60_08182021 8/18/2021 0715h 8/24/2021 0940h 300.0-W Aqueous df-cl
I SEL Analytes: CL
2108638-007B NO2/NO3-W-353.2 df-no2/no3
1 SEL Ana!Jtes: N03N02N
Printed: 08/24/21 10:32 LABORATORY CHECK: %M O RT O CN O TAT O QC O LUO 0 HOK __ HOK __ HOK___ COC Emailed. ____ _
WORK ORDER Summary WorkOrder: 2108638 Page2of2
Client: Energy Fuels Resources, Inc. Due Date: 9/8/2021
Sample ID Client Sample ID Collected Date Received Date Test Code Matrix Sel Storage
2108638-008A TWN-21_08192021 8/19/2021 0855h 8/24/2021 0940h 300.0-W Aqueous df-cl
I SEL Analytes: CL
2108638-008B NO2/NO3-W-3S3.2 df-no2/no3
1 SEL Analytes: N03N02N
2108638-009A TWN-20 _ 08192021 8/19/2021 0905h 8/24/2021 0940h 300.0-W Aqueous df-cl
1 SEL Analytes: CL
2108638-009B NO2/NO3-W-3S3.2 df-no2/no3
I SEL Analytes: N03N02N
2108638-0l0A TWN-07_08192021 8/19/2021 0913h 8/24/2021 0940h 300.0-W Aqueous df-cl
I SEL Ana{ytes: CL
2108638-010B NO2/NO3-W-3S3.2 df-no2/no3
I SELAnalytes: N03N02N
2108638-01 lA TWN--03_08192021 8/19/2021 0922h 8/24/2021 0940h 300.0-W Aqueous df-cl
I SEL Analytes: CL
2108638-011B NO2/NO3-W-353.2 df-no2/no3
I SEL Analytes: N03N02N
2108638-012A PIEZ-02_08192021 8/19/2021 0935h 8/24/2021 0940h 300.0-W Aqueous df-cl
1 SEL Analytes: CL
2108638-012B NO2/NO3-W-353.2 df-no2/no3
1 SEL Analytes: N03N02N
2108638-0lJA PIEZ-01_08192021 8/19/2021 0948h 8/24/2021 0940h 300.0-W Aqueous df-cl
1 SEL Analytes: CL
2108638-013B NO2/NO3-W-353.2 df-no2/no3
1 SEL Analytes: N03N02N
2108638-014A PIEZ-03A_08192021 8/19/2021 1012h 8/24/2021 0940h 300.0-W Aqueous df-cl
1 SEL Analytes: CL
2108638-014B NO2/NO3-W-353.2 df-no2/no3
1 SEL Analytes: N03N02N
Printed: 08/24/21 11: 10 LABORATORY CHECK: %M □ R,: 0 CN O TAT □ QC O LUO 0 HOK __ HOK __ HOK___ COC Emailed'-----
2
American West
Analytical Laboratories
463 W. 3600 S. Salt Lake City, UT 84115
Phone# (801) 263~686 Toll Free# {888) 263-8686
1
Address: 6425 S. Hwy. 191
Blanding, UT 84511
Contact: Tanner Holliday
Phone#: [phone] Cell#:
Email: [e-mail]; [e-mail]
Project Name: 3rd Quarter Nitrate 2021
Project#:
PO#:
Sampler Name: Tanner Holliday
Date
Sample ID: Samoled
TW1'f-18R_08172021 8/17/2021
TWl'l'-18_08172021 8/17/2021
TWil'-65_08172021 8/17/2021
TWN-04_08182021 8/18/2021
TWil-01_08182021 8/18/2021
TWH-02_08182021 8/18/2021
TWN-60_08182021 8/18/2021
TWl'f-21_08192021 8/19/2021
TWl'f-20_08192021 8/19/2021
10 I TWN-07_08192021 8/19/2021
11 I TWR-03_08192021 8/19/2021
12 ! PIEZ-02_08192021 8/19/2021
13 I PIEZ-01_08192021 8/19/2021
RoO~by. ~\ //.,,,!~ Dato:
S-ure _.,.,,..~ 8123120'21
V lme:
Prlnt Namer: TamorHoUklov 110C
R__,.. by: Date:
ISlnnnluro
trlme:
!Print Name:
Relinquished by: Date:
Sli:1nature
Time:
o.wt,omr.
""11'1qulsl\od by: Date:
'''"""""'" Time:
-Nomo:
I
Time
Samoled
845
917
917
919
1016
1025
715
855
905
913
922
935
948
Received by:
Slanslure
Print Name:
CHAIN OF CUSTODY
All analysis will be conducted using NELAP aca-ediled methods and aft date will be reported using AWAL's standard analyte llsts and ltlpOrting
limits (PQL) unless 5pecif1celly requested otherMse on this Chain of Custody and/or attached documentation.
QC Level:
I
Tum Around Time: Unless other arrangements have been made,
signed reports will be emailed by 5:00 pm on
3 Standard lhe day they ere due.
X Include EDD:
LOCUS UPLOAD
EXCEL
Field Filtered For.
For Compliance With:
D NELAP
D RCRA
□ CWA
0 SOWA
0 ELAP/A2LA
o' □ NLLAP <'i' 0 □ Non-Compliance el C □ Other: "1 ; ~ .. )( 0 C :s t'l C ~ "' 0 C ::;; Ill C Known Hazards 0 <D lf) ...... ::t. (..l ii ~ & 'o E 0 El .. ., Ill Samole Comments Cl)
2 w X X
2 w X X
2 w X X
'2 w X X
2 w X X
2 w X X
2 w X X
2 w X X
2 w X X
2 w X X
2 w X X
2 w X X
2 w X X
Oate: Special Instructions:
Tlme:
.
Reoolvod,P, / le .... ~,-,< N J • ~ _/ Dot°?µ 1//z. /
.? lt--.t..... 1--/d_A . ' .___ ./ hlme: '1 l/ (_l Print Namo:
Received by: I 7 Cate:
Slanature
frlme:
PJinlName:
!Received by: Osle:
lsicnature
rTlme:
Print_ Name:
.2ilU2"&.~5s
AWAL Lab Sample Set#
Page 1 of 2 r· ""' I
Laboratory Use Only
Samplos Woni: (,,l p;-
1 e lldddvared
2 Amblont~
3 Temperature /, 0 ·c
4 Received Broken/Lealdng
(lmpruperiy Seaied) )
y ~
S ~ly Pr8S8!Ved y N
od al bench
y N
6 Recoived Within
t)dlng Times
N
COC Tape Was:
1 ~ on Outer Package
Y N NA
2 ~oken on Outer Packege
Y N NA
3 Presem: on Sample
y N 0_~
4 Unbroken on San'¥>'e e y N
=~~-=t:r
American West
Analytical Laboratories
463 W. 3600 S. Salt Lake City, UT 84115
Phone # [phone] Toll Free# [phone]
L~ Fax# (801) 263-s687 Email [e-mail]
www.awal-labs.com
Client: Energy Fuels Resources, Inc.
Address: 6425 S. Hwy-191
Blanding, UT 84511
Contact: Tanner Holliday
Phone#: [phone] Cell#:
Email: thoJlida:,@enerafael.s.com; kwdnel@eae,rgyfu.els.com
Project Name: 3rd Quarter Nitrate 2021
Project#:
PO#:
Sampler Name: Tanner Holliday
Date
Samele 10: Samoled
I PIEZ-03A_08192021 8/19/2021
•
I
'
I
I
)
I
!
l
;
I
:i.::..-by: -"\ -. -/1,.,IJ.L Dato:
8/2ll/2021 , Tlmo:
"ril'IINorno: Tomotl-lol""-IIM
Ral~by: Data;
b .... lffll
Tlmtr.
"ril'IINomo:
Roloqulshad by: Date:
lci...noture
llmo:
Pril'IINomo:
!Relinquished by: Date:
"'"nature
Time:
"rinl-
CHAIN OF CUSTODY
All analysis will be conducted using NELAP accradlted molhods and all data will be reported using AWAL's standard analyte II.ts and lllpOrting
limits (F'OL) unless opecif,cally requested otherMse on lhls Chain of Custody end/or attached documentation.
I
QC Level:
I
Turn Around Time: Unless other arrangements have been made,
signed reports wlll be emalled by 5:00 pm on
3 Standard the day they are due.
X Include EDO:
LOCUS UPLOAD
EXCEL
F,eld Filtered For:
For Compliance WHh:
□ NELAP
□ RCRA
□ CWA
□ SOWA
□ ELAP/A2LA
o' □ NLLAP ~ c:i □ Non-Comp~ance ~ 0 □ Other: "l I!! ~ ... ., )( 0 C ·c: l'l ~ 1ii 0 0 ::; 0 Known Hazards C: 12: II) 0 ., ' ::t. Time (.) 1i ~ & 'o E 0 u Samoled .. 12: Samale Comments .. u,
1012 2 w X X
Received by: Date: Special Instructions: Sk,nature
Time:
PrtntNamo: ,
Received b~__;,f Slonalure • t,1A di,,_, / Oalo~ft.f' /~/
Prtnl Name: L /4 '1A 4.. ~ ~,\ c;__ 7 /
lime: 9'/(\
Received by: / Date:
Siqnatuna .
Tlme:
Prut Name:
Received by: Date:
S]anot.,-
Time:
Print Name:
2. In ~G .s..f"
AWAL Lab Sample Sel #
Page 2 of 2
I""· .... I
Laboratory Use Only
Samples Were (,,{ J~ e 1 hand delivered 2~e
3 Temperah.n ~ •·c
4 Received Broken/Leaking
(lmproperty Sealed)
y e:)
~a:-ed y , N
-at bench
y N
6 Recalved Within (!jlllOTIITles
N
COCTapeW""-
1 ~ on Outer Package
y I N NA
2 tr°k"" on Outer Package
Y N NA
3 Present on Sample EJ y N
4 Unbroken on Sample
y N rJ
Discrepancies Between Sample
Labels and COC Record~
y N/
Analysis
Ammonia
COD
Cyanide
Metals
NO:i/NO3
O&G
Phenols
Sulfide
TKN
TPO4
Cr VI+
Procedure:
Frequency:
Preservation Check Sheet
s le S
Preservative ! A ,?; t( ')"
oH<2H2SO4
0H<2H2SO4
pH>IONaOH
0H<2HNO3
oH<2H2SO4 Ye,:, \/4,c It,,; ¼-s &{
pH<2HCL I/' r I r
oH<2H2SO4
pH >9 NaOH, ZnAC
oH<2 H2SO4
oH<2fuSO4
pH >9 (NH4)zSO4
Pour a small amount of sample in the sample lid
Pour sample from lid gently over wide range pH paper
Do Not dip the pH paper in the sample bottle or lid
et ~xtens1on ana H p,
;;, r &-'
~<; \/2>' V,.,(
II' /' ,,,...
c-:, I()
1,&f 1b5-, 1r
l)
2)
3)
4)
S)
6)
7)
If sample is not preserved, properly list its extension and receiving pH in the appropriate column above
Flag COC, notify client if requested
Place client conversation o.n COC
Samples may be adjusted
All samples requiring preservation
*
+
A
#
•
The sample required additional preservative upon receipt.
The san1ple was received unpreserved.
The sample was received unpreserved and therefore preserved upon receipt.
The sample pH was unadjustable to a pH < 2 due to the sample matrix.
The sample pH was unadjustable to a pH > __ due to the sample matrix interference.
Lab Set ID: ?-.. f G' f fr ·2;, ;(
pH Lot#: (" )CJ C
I/ /9-, /'7 it/
Ill<;, ./,:,; 0.s t/4<-
r r ~
rev 10-28-2020
Tanner Holliday
Energy Fuels Resources, Inc.
6425 South Hwy 191
American West Blanding, UT 84511
ANAIVTICAl LABORATORIES
3440 South 700 West
;alt Lake City, UT 84119
Phone: [phone]
Toll Free: [phone]
Fax: (80 I) 263-8687
!-mail: [e-mail]
web: www.awal-labs.com
Jennifer Osborn
Laboratory Director
Jose Rocha
QA Officer
TEL: ( 435) 678-2221
RE: 3rd Quarter Chloroform 2021
Dear Tanner Holliday: Lab Set ID: 2108726
American West Analytical Laboratories received sample(s) on 8/26/2021 for the analyses
presented in the following report.
American West Analytical Laboratories (AW AL) is accredited by The National
Environmental Laboratory Accreditation Program (NELAP) in Utah and Texas; and is
state accredited in Colorado, Idaho, New Mexico, Wyoming, and Missouri.
All analyses were performed in accordance to the NELAP protocols unless noted
otherwise. Accreditation scope documents are available upon request. If you have any
questions or concerns regarding this report please feel free to call.
The abbreviation "Surr" found in organic reports indicates a surrogate compound that is
intentionally added by the laboratory to determine sample injection, extraction, and/or
purging efficiency. The ''Reporting Limit" found on the report is equivalent to the
practical quantitation limit (PQL). This is the minimum concentration that can be
reported by the method referenced and the sample matrix. The reporting limit must not be
confused with any regulatory limit. Analytical results are reported to three significant
figures for quality control and calculation purposes.
Thank You,
J G Digitally signed 0$9 . by Jose G.
Rocha Rocha Date: 2021.09.13
14:03:39 -06'00' Approved by: ~------------
Laboratory Director or designee
Report Date: 9/13/2021 Page I of 46
All analyses applicable to the CWA, SOWA. Md RCRA are performed in accordance to NELAC pro1ocols Pertincnl sampling informal.ion is localed on lhe allached COC Conf'idential Business lnformalion: This repon is pro, ided for the exclusi,e use of lhe
~ddressee Pri, ile~es o_f sub,_seq~nl ~~e or 1he ~?';le of this .co1~p::my or ru,y r~mber of its staff, or reproductio.~ ~f this repo~ in ~on~1eclion__ with the ~~'erlisemenl. P~?moti~ or sa1e of ~!r ~rod~cl or p~ocess, ~r in ~nn1;c~ion w!th lh~ r~-publicalion of lhis report
SAMPLE SUMMARY
Client: Energy Fuels Resources, Inc. Contact: Tanner Holliday
Project: 3rd Quarter Chloroform 2021
Lab Set ID: 2108726
Date Received: 8/26/2021 1025h
Lab Sample ID Client Sample ID Date Collected Matrix Analysis
3440 South 700 West 2108726-001 A TW4-25_08242021 8/24/2021 915h Aqueous Anions, E300.0
,alt Lake City, UT 84119 2108726-00 I B TW4-25 08242021 8/24/2021 915h Aqueous Nitrite/Nitrate (as N), E353.2
2108726-001 C TW4-25 08242021 8/24/2021 915h Aqueous VOA by GC/MS Method
8260D/5030C
Phone: (80 I) 263-8686 2108726-002A TW4-40 08242021 8/24/2021 1224h Aqueous Anions, E300.0
2108726-002B TW4-40 08242021 8/24/2021 1224h Aqueous Nitrite/Nitrate (as N), E353.2
Toll Free: [phone] 2108726-002C TW4-40 08242021 8/24/2021 1224h Aqueous VOA by GC/MS Method
Fax: (80 I) 263-8687 8260D/5030C
!-mail: [e-mail] 2108726-003A TW4-24 08242021 8/24/2021 926h Aqueous Anions, E300.0
2108726-003B TW4-24 08242021 8/24/2021 926h Aqueous Nitrite/Nitrate (as N), E353.2
web: www.awal-labs.com 2108726-003C TW4-24 08242021 8/24/2021 926h Aqueous VOA by GC/MS Method
8260D/5030C
2108726-004A TW4-19 08242021 8/24/2021 1240h Aqueous Anions, E300.0
Jennifer Osborn 2108726-004B TW4-19 08242021 8/24/2021 1240h Aqueous Nitrite/Nitrate (as N), E353.2
2108726-004C TW4-19 08242021 8/24/2021 1240h Aqueous VOA by GC/MS Method
Laboratory Director 8260D/5030C
2108726-00SA TW4-01_08242021 8/24/2021 1158h Aqueous Anions, E300.0
Jose Rocha 2108726-005B TW4-0l 08242021 8/24/2021 1158h Aqueous Nitrite/Nitrate (as N), E353.2
QA Officer 2108726-00SC TW4-0l 08242021 8/24/2021 1158h Aqueous VOA by GC/MS Method
8260D/5030C
2108726-006A MW-26 08242021 8/24/2021 958h Aqueous Anions, E300.0
2108726-006B MW-26 08242021 8/24/2021 958h Aqueous Nitrite/Nitrate (as N), E353.2
2108726-006C MW-26 08242021 8/24/2021 958h Aqueous VOA by GC/MS Method
8260D/5030C
2108726-007 A TW4-41 08242021 8/24/2021 1207h Aqueous Anions, E300.0
2108726-007B TW4-41 08242021 8/24/2021 1207h Aqueous Nitrite/Nitrate (as N), E353.2
2108726-007C TW4-41 08242021 8/24/2021 1207h Aqueous VOA by GC/MS Method
8260D/5030C
2108726-008A TW4-21 08242021 8/24/2021 905h Aqueous Anions, E300.0
2108726-008B TW4-2 l 08242021 8/24/2021 905h Aqueous Nitrite/Nitrate (as N), E353.2
2108726-008C TW4-21 08242021 8/24/2021 905h Aqueous VOA by GC/MS Method
8260D/5030C
2108726-009A TW4-02_08242021 8/24/2021 1015h Aqueous Anions, E300.0
2108726-009B TW4-02 08242021 8/24/2021 1015h Aqueous Nitrite/Nitrate (as N), E353.2
2108726-009C TW4-02 08242021 8/24/2021 1015h Aqueous VOA by GC/MS Method
8260D/5030C
2108726-01 0A TW4-04 08242021 8/24/2021 1214h Aqueous Anions, E300.0
Report Date: 9/13/2021 Page 2 of 46
All anolyses applicable to lhe CWA. SOWA. and RCRA .ire performed in accordance 10 NELAC protocols. Pertinenl sampling information is located on lhe allached COC. Confidentinl Business Information: This repon is pr°'•ided for the exclusi,·e use of 1he
~ddressee. Prh·ile~es of sub ... seq~enl ~~e or the ~~e of lhis ,con_1pany or nnr ~mber of its s1a.rr, or reproduclio~ ~f this repo~ in ~n?ection .. \\-ith the a<!~ertisemenl, p~~moli~n or sale of ~r ~rodl~Cl or p~ocess, ~r in i;onn:,c~ion w!lh th~ r~-p~blication or this report
Client: Energy Fuels Resources, Inc. Contact: Tanner Holliday
Project: 3rd Quarter Chlorofonn 2021
American West Lab Set ID: 2108726
ANALYTICAL LABORATORIES Date Received: 8/26/2021 I 025h
Lab Sample ID Client Sample ID Date Collected Matrix Analysis
2108726-0IOB TW4-04 08242021 8/24/2021 1214h Aqueous Nitrite/Nitrate (as N), E353.2
3440 South 700 West 2108726-0 I 0C TW4-04 08242021 8/24/2021 1214h Aqueous VOA by GC/MS Method
8260D/5030C
;a]t Lake City, UT 84119 2108726-01 IA MW-04 08242021 8/24/2021 1150h Aqueous Anions, E300.0
2108726-0 l lB MW-04 08242021 8/24/2021 1150h Aqueous Nitrite/Nitrate (as N), E353.2
2108726-01 IC MW-04 08242021 8/24/2021 1150h Aqueous VOA by GC/MS Method
Phone: [phone]D/5030C
2108726-012A TW4-39 08242021 8/24/2021 951h Aqueous Anions, E300.0
Toll Free: [phone] 2108726-012B TW4-39_08242021 8/24/2021 951h Aqueous Nitrite/Nitrate (as N), E353.2
Fax: (80 I) 263-8687 2108726-012C TW4-39 08242021 8/24/2021 951h Aqueous VOA by GC/MS Method
!-mail: [e-mail] 8260D/5030C
2108726-013A TW4-ll 08242021 8/24/2021 1006h Aqueous Anions, E300.0
web: www.awal-labs.com 2108726-013B TW4-11_08242021 8/24/2021 1006h Aqueous Nitrite/Nitrate (as N), E353 .2
2108726-013C TW4-ll 08242021 8/24/2021 1006h Aqueous VOA by GC/MS Method
8260D/5030C
Jennifer Osborn 2108726-014A TW4-22 08242021 8/24/2021 935h Aqueous Anions, E300.0
2108726-014B TW4-22 08242021 8/24/2021 935h Aqueous Nitrite/Nitrate (as N), E353.2
Laboratory Director 2108726-0 J 4C TW4-22 08242021 8/24/2021 935h Aqueous VOA by GC/MS Method
8260D/5030C
Jose Rocha 2108726-015A TW4-37 08242021 8/24/2021 943h Aqueous Anions, E300.0
QA Officer 2108726-015B TW4-37 08242021 8/24/2021 943h Aqueous Nitrite/Nitrate (as N), E353.2
2108726-0 I SC TW4-37 08242021 8/24/2021 943h Aqueous VOA by GC/MS Method
8260D/5030C
2108726-016A TW4-60 08242021 8/24/2021 1300h Aqueous Anions, E300.0
2108726-016B TW4-60 08242021 8/24/2021 1300h Aqueous Nitrite/Nitrate (as N), E353.2
2108726-0 l 6C TW4-60 08242021 8/24/2021 1300h Aqueous VOA by GC/MS Method
8260O/5030C
2108726-017A Trip Blank 8/24/2021 905h Aqueous VOA by GC/MS Method
8260O/5030C
Report Date: 9/13/2021 Page 3 of 46
All omolyses applicable to the CWA, SDW A. and RCRA are perfonned in accordance to NELAC prolocols Pertinent sampling informalion is located on the attached COC. Confidential Business Informal ion: This report is provided for 1he exclusiYe use of 1he
~ddressee Pri,•ile~es o_f su~seq~enl ~e of the ~~e of lhis .co•~pany or RO) ~mber or its slaff, or reproductio~ ~f lhis repo~ in .~eel ion .. ,,,ilh the ~' ertisemenl, P~?moli~ ~r sale of :U!Y, ~rod~cl or p~ocess. ~r in ~nn:c~ion ,,·!th th~ r1;-p~blication of this repon
3440 South 700 West
~alt Lake City, UT 84119
Phone:[phone]
Toll Free: [phone]
Fax: (80 I) 263-8687
!-mail: [e-mail]
web: www.awal-labs.com
Jennifer Osborn
Laboratory Director
Jose Rocha
QA Officer
Inorganic Case Narrative
Client:
Contact:
Energy Fuels Resources, Inc.
Tanner Holliday
Project:
Lab Set ID:
Sample Receipt Information:
Date of Receipt:
Date of Collection:
Sample Condition:
C-O-C Discrepancies:
3rd Quarter Chloroform 2021
2108726
8/26/2021
8/24/2021
Intact
None
Holding Time and Preservation Requirements: The analysis and preparation of all
samples were performed within the method holding times. All samples were properly
preserved.
Preparation and Analysis Requirements: The samples were analyzed following the
methods stated on the analytical reports.
Analytical QC Requirements: All instrument calibration and calibration check
requirements were met. All internal standard recoveries met method criterion.
Batch QC Requirements: MB, LCS, MS, MSD, RPD:
Method Blanks (MB): No target analytes were detected above reporting limits,
indicating that the procedure was free from contamination.
Laboratory Control Samples (LCS): All LCS recoveries were within control
limits, indicating that the preparation and analysis were in control.
Matrix Spike / Matrix Spike Duplicates (MS/MSD): All percent recoveries and
RPDs (Relative Percent Differences) were inside established limits, with the
following exceptions:
Sample ID Analyte QC Explanation
2108726-001 B Nitrate/Nitrite MS/MSD Sample matrix interference
2108726-00SB N itrate/N itri te MS/MSD Sample matrix interference
2108726-0lSB Nitrate/Nitrite MS High analyte concentration
Duplicate (DUP): The parameters that required a duplicate analysis had RPDs
within the control limits.
Corrective Action: None required.
Report Date: 9/13/202 I Page 4 of 46
All am:ilyses applicable lo lhe CWA. SOWA and RCRA are perfom1ed in accordance 10 NELAC protocols Pertinenl sampling information is foc1:11ed on lhe aua.ched COC Confidenrial Business Information: This report is provided for the e.xclush e use of 1he
~ddressee Pri, ile~es o!'sub,,seq~enl ~~e of"lhe ~~e olthis .co,~pany or any ~mber ofils struT, or reproduclio~ ~fthis repo~ in ~on~ection .. with lhe a~vertisemenl, ll~?molio,n or sale of~!~ ~rod1~cl or P~?cess, ~r in '?°nn:_c~ion w!lh th~ r~-publicatio11 of this repor1
American West ANALYTICAL LABORATORIES
Client: Energy Fuels Resources, Inc.
Lab Set ID: 2108726
Project: 3rd Quarter Chloroform 2021
Analyte Result Units
3440 South 700 West
Salt Lake City, UT 84119
Phone: [phone], Toll Free: [phone], Fax: [phone]
e-mail: [e-mail], web: www.awal-Iabs.com
_QC SUMMARY REPORT
Contact: Tanner Holliday
Method MDL
Reporting
Limit
Dept: WC
QC Type: LCS
Amount Spiked Spike Ref.
Amount %REC
Lab Sample ID: LCS-Rl56360 Date Analyzed: 09/07/2021 600h
Test Code: 300.0-W
Chloride 5.09 mg/L E300,0 0.0198 O.IOO 5.000 0 102
Lab Sample ID: LCS-Rl56465 Date Analyzed: 09/08/2021 2345h
Test Code: 300.0-W
Chloride 5.12 mg/L E300,0 0.0198 0.100 5.000 0 102
Lab Sample ID: LCS-Rl56021 Date Analyzed: 08/2 7 /202 I 920h
Test Code: NO2/NO3-W-353.2
Nitrate/Nitrite (as N) 1.07 mg/L E353.2 0.00541 0.0100 1.000 0 107
Lab Sample ID: LCS-Rl56022 Date Analyzed: 08/27 /202 l 1008h
Test Code: NO2/NO3-W-353.2
Nitrate/Nitrite (as N) 1.07 mg/L E353,2 0.00541 0.0100 1.000 0 107
Limits
90 -110
90 -110
90 -110
90 -110
Jennifer Osborn
Laboratory Director
Jose Rocha
QA Officer
RPDRef. RPD
Limit Amt %RPO Qual
Report Date: 9/13/2021 Page 39 of 46
analyses applicable to the CWA. SOWA, and RCRA are performed in accordance to NELAC protocols Pertinent sampling infomiation is located on the attached COC. Confidential Business Information: This report is provided for die exclusive use of the addressee, Privileges of subsequent use oftt
ne of this company or any member of its staff, or reproduction of this report in connection with the advertisement. promotion or sale of any product or process, or in connection with the re-pub I ication of thls report for any purpose other than for the addressee will be granted only on contact. Thls
American West
ANALYTICAL LABORATORIES
Client: Energy Fuels Resources, Inc.
Lab Set ID: 2108726
Project: 3rd Quarter Chloroform 2021
Analyte Result
Lab Sample ID: MB-Rl56360 Date Analyzed:
Test Code: 300.0-W
Chloride < 0.100
Lab Sample ID: MB-R156465 Date Analyzed:
Test Code: 300.0-W
Chloride <0.100
Lab Sample ID: MB-Rl56021 Date Analyzed:
Test Code: NO2/NO3-W-353.2
Nitrate/Nitrite (as N) < 0.0100
Lab Sample ID: MB-Rl56022 Date Analyzed:
Test Code: NO2/NO3-W-353.2
Nitrate/Nitrite (as N) < 0.0100
3440 South 700 West
Salt Lake City, UT 84119
Phone: [phone], Toll Free: [phone], Fax: [phone]
e-mail: [e-mail], web: www.awal-Iabs.com
C SUMMARY REPORT
Contact:
Dept:
QC Type:
Reporting Amount Spiked
Units Method MDL Limit
09/07/2021 536h
mg/L E300.0 0.0198 0.100
09/08/2021 2321h
mg/L E300.0 0.0198 0.100 -08/27/2021 919h
mg/L E353.2 0.00541 0.0100
08/27/2021 1007h
mg/L E353.2 0.00541 0.0100
Tanner Holliday
WC
MBLK
Spike Ref.
Amount ¾REC Limits
Jennifer Osborn
Laboratory Director
Jose Rocha
QA Officer
RPO Ref. RPO
Amt ¾RPO Limit Qual
Report Date: 9/13/2021 Page40of46
analyses applicable to the CWA. SDW A, and RCRA are perfonned in accordance to NE LAC protocols Pertinent sampling infonnation is located on the attached COC Confidential Business Information: This report is provided for die e.,clusive use of the addressee Privileges of subsequent use of tt
ne of this company or any member of its staff, or reproduction of this report in connection with the advertisement. promotion or sale of any product or process, or in connection with the re~publication of this report for any purpose other than for the addressee will be granted only on contact. This
ANALYTICAL LABORATORIES
Client: Energy Fuels Resources, Inc.
Lab Set ID: 2108726
Project: 3rd Quarter Chloroform 2021
Analyte Result
Lab Sample ID: 2108726-00JAMS Date Analyzed:
Test Code: 300.0-W
Chloride 2,030
Lab Sample ID: 2108726-016AMS Date Analyzed:
Test Code: 300.0-W
Chloride 25.3
Lab Sample ID: 2108726-00lBMS Date Analyzed:
Test Code: NO2/N03-W-353.2
Nitrate/Nitrite (as N) 12.0
Lab Sample ID: 2108726-00SBMS Date Analyzed:
Test Code: NO2/N03-W-353.2
Nitrate/Nitrite (as N) 12.7
Lab Sample ID: 2108726-0ISBMS Date Analyzed:
Test Code: N02/N03-W-353.2
Nitrate/Nitrite (as N) 80.8
3440 South 700 West
Salt Lake City, UT 84119
Phone: [phone], Toll Free: [phone], Fax: [phone]
e-mail: [e-mail], web: www.awal-labs.com
C SUMMARY REPORT
Contact: Tanner Holliday
Dept: WC
QC Type: MS
Reporting Amount Spiked Spike Ref.
Units Method MDL Limit Amount %REC
09/07/2021 824h
mg/L E300.0 3.96 20.0 1,000 1010 102
09/09/2021 858h
mg/L E300.0 0.0990 0.500 25.00 0 101
08/27/2021 954h
mg/L E353.2 0.0541 0.100 10.00 0.793 112
08/27/2021 1010h
mg/L E353.2 0.0541 0.100 10.00 1.38 113
08/27/2021 1048h
mg/L E353.2 0.270 0.500 50.00 25.8 110
' -Matrix spike recovery indicates matrix interference. The method is in control as indicated by the LCS.
2 -Analyte concentration is too high for accurate matrix spike recovery and/or RPD.
Limits
90 -110
90-110
90 -110
90 -110
90 -110
Jennifer Osborn
Laboratory Director
Jose Rocha
QA Officer
RPDRef. RPD
Amt %RPO Limit Qual
Report Date: 9/13/2021 Page 41 of 46
analyses applicable to the CWA. SDWA, and RCRA are perfom1ed in aceordance to NELAC protocols Pertinent sampling infonnation is located on the attached COC. Confidential Business lnfonnation: TI1is report is provided for the e.~clusive use of the addressee, Privileges of subsequent use of tt
ne of this company or any member of its staff, or reproduction of this report in connection with the advertisement. promotion or sale of any product or process, or in connection with the re-publication of this report for any purpose other than for the addressee wll1 be granted onty on contact. This
Client: Energy Fuels Resources, Inc.
Lab Set ID: 2108726
Project: 3rd Quarter Chloroform 2021
Analyte Result
Lab Sample ID: 2108726-00JAMSD Date Analyzed:
Test Code: 300.0-W
Chloride 2,070
Lab Sample ID: 2108726-016AMSD Date Analyzed:
Test Code: 300.0-W
Chloride 25.3
Lab Sample ID: 2108726-00lBMSD Date Analyzed:
Test Code: NO2/N03-W-353.2
Nitrate/Nitrite (as N) 11.9
Lab Sample ID: 2108726-00SBMSD Date Analyzed:
Test Code: NO2/N03-W-353.2
Nitrate/Nitrite (as N) 12.5
Lab Sample ID: 2108726-0lSBMSD Date Analyzed:
Test Code: NO2/N03-W-353,2
Nitrate/Nitrite (as N) 75.5
3440 South 700 West
Salt Lake City, UT 84119
Phone: [phone], Toll Free: [phone], Fax: [phone]
e-mail: [e-mail], web: www.awal-labs.com
C SUMMARY REPORT
Contact:
Dept:
QC Type:
Reporting Amount Spiked
Units Method MDL Limit
09/07/2021 848h
mg/L E300.0 3.96 20.0 1,000
09/09/2021 922h
mg/L E300.0 0.0990 0.500 25.00 -08/27/2021 955h
mg/L E353,2 0.0541 0.100 10.00
08/27/2021 101 !h
mg/L E353.2 0.0541 0,100 10.00
08/27/2021 1049h
mg/L E353,2 0.270 0.500 50.00
Tanner Holliday
WC
MSD
Spike Ref.
Amount %REC
1010 106
0 IOI
0.793 Ill
1.38 111
25.8 99.4
' -Matrix spike recovery indicates matrix interference. The method is in control as indicated by the LCS.
2 -Analyte concentration is too high for accurate matrix spike recovery and/or RPD.
Limits
90 -110
90 -110
90 -110
90 -110
90 -110
Jennifer Osborn
Laboratory Director
Jose Rocha
QA Officer
RPD Ref. RPD
Amt %RPO Limit
2030 1.95 20
25.3 0.192 20
12 0.261 10
12.7 1.39 10
80.8 6.80 10
Qual
Report Date: 9/13/2021 Page 42 of 46
analyses applicable to the CW A. SOW A, and RCRA are performed in accordance to NELAC protocols Pertinent sampling information is located on the attached COC. Confidential Business lnfom1ation: This report is provided for the exclusive use of the addressee, Privilet-es of subsequent use of It
ne of this company or any member of its staff, or reproduction of this report in connection with the advertisement, promotion or sale of any product or process, or in connection with the re-publication of this report for any purpose other than for the addressee will be granted only on contact. This
American West Analytical Laboratories Rpt Emailed: UL
Denison
WORK ORDER Summary WorkOrder: 2108726 Page 1 of3
Client: Energy Fuels Resources, Inc. Due Date: 9/10/2021
Client ID: ENE300 Contact: Tanner Holliday
Project: 3rd Quarter Chloroform 2021 QC Level: III WO Type: Project
Comments: QC 3 (no chromatograms). EDD-Denison. CC [e-mail]; (USE PROJECT for special DLs). Do not use "*R_" samples as MS/MSD.; -Q
Sample ID Client Sample ID Collected Date Received Date Test Code Matrix Sel Storage
2108726-00IA 'IW4-25_08242021 8/24/2021 0915h 8/'26/2021102Sh 300.0-W Aqueous df-wc
1 SEL Analytes: CL
2108726-00lB NO2/NO3-W-353.2 df -no2/no3
1 SELAnaf;,tes: NO3NO2N
2108726-00lC 8260D-W-DENlOO VOCFridge 3
Test Group: 8260D-W-DENJ00; # of Analytes: 4/# ofSurr: 4
2108726-002A 'IW4-40_08242021 8/24/2021 1224h 8/26/2021 1025h 300.0-W Aqueous df-wc
1 SEL Analytes: CL
2108726-002B NO2/NO3-W-353.2 df-no2/no3
1 SEL Analytes: NO3NO2N
2108726-002C 8260D-W-DENlOO VOCFridge 3
Test Group: 8260D-W-DENJ0O; # of Analytes: 4 I# of Surr: 4
2108726-00JA 'IW4-24_08242021 8/24/2021 0926h 8/26/2021 1025h 300.0-W Aqueous df-wc
1 SEL Analytes: CL
2108726-003B NO2/NO3-W-353.2 df-no2/no3
1 SEL Analytes: NO3NO2N
2108726-00JC 8260D-W-DENlOO VOCFridge 3
Test Group: 8260D-W-DENJ00; # of Analytes: 4 /# ofSurr: 4
2108726-004A 'IW4-19_08242021 8/24/2021 1240h 8/26/2021 1025h 300.0-W Aqueous df-wc
1 SEL Analytes: CL
2108726-004B NO2/NO3-W-353.2 df-no2/no3
1 SEL Analytes: NO3NO2N
2108726-004C 8260D-W-DENlOO VOCFridge 3
Test Group: 8260D-W-DENJ 00; # of Analytes: 4 I# of Surr: 4
2108726-00SA ', 1W4-01_08242021 · · 8/24/2021 115 8h . 8/26/2021 1025h 300.0-W Aqueous df-wc . 1
1 SEL ilnalytes: CL
2108726-005B N02/NO3-W-353.l df-no2/no3
I SEL Analytes: NO3NO2N .
' 2108726-00SC ·•·. 8260D~W-DENlOO · VOCFridge , ,3 ., •
Test Group: 8260D-W-DENI00; # of1_nalytes: 4 I # o[S1'": 4
Printed: 08/26/21 14:01 LABORATORY CHECK: %M O RT O CN □ TAT O QC O LUO 0 HOK ___ HOK __ _ HOK___ COC Emailed _____ _
WORK ORDER Jmmary WorkOrder: 2108726 Page2 of3
Client: Energy Fuels Resources, Inc. Due Date: 9/10/2021
Sample ID Client Sample ID Collected Date Received Date Test Code Matrix Se) Storage
2108726-006A MW-26_08242021 8/24/2021 095 8h 8/26/2021 1025h 300.0-W Aqueous df-wc
I SEL Analytes: CL
2108726-006B NO2/NO3-W-353.2 df-no2/no3
I SEL Analytes: N03NO2N
2108726-006C 8260D-W-DEN100 VOCFridge 3
Test Group: 8260D-W-DENJO0; # of Analytes: 4 I# of Su": 4
2108726-007A 1W4-41_08242021 8/24/2021 1207h 8/26/2021 1025h 300.0-W Aqueous df-wc 1
I SEL Analytes: CL
2108726-007B NO2/NO3-W-353.2 df-no2/no3
I SEL Analytes: NO3NO2N
2108726-007C 8260D-W-DEN100 VOCFridge 3
Test Group: 8260D-W-DENI00; # of Analytes: 4 I# of Su": 4
2108726-008A 1W4-21_08242021 8/24/2021 0905h 8/26/2021 1025h 300.0-W Aqueous df-wc
I SEL Analytes: CL
2108726-008B NO2/NO3-W-353.2 df-no2/no3
I SEL Analytes: NO3NO2N
2108726-008C 8260D-W-DENlO0 VOCFridge 3
Test Group: 8260D-W-DENI00; # of Analytes: 4 I# of Su": 4
2108726-009A 1W4-02_08242021 8/24/2021 10 l Sh 8/26/2021 1025h 300.0-W Aqueous df-wc
I SEL Analytes: CL
2108726-009B NO2/NO3-W-353.2 df-no2/no3
I SEL Analytes: NO3NO2N
2108726-009C 8260D-W-DENlOO VOCFridge 3
Test Group: 8260D-W-DENIO0; #of Analytes: 4/# of Su": 4
2108726-0lOA 1W4-04_08242021 8/24/2021 1214h 8/26/2021 1025h 300.0-W Aqueous df-wc
I SEL Analytes: CL
2108726-010B NO2/NO3-W-353.2 df-no2/no3
I SEL Analytes: NO3NO2N
2108726-0lOC 8260D-W-DEN100 VOCFridge 3
Test Group: 8260D-W-DENI00; # of Analytes: 4 I# of Su": 4
2108726-0llA MW-04_08242021 8/24/2021 1150h 8/26/2021 1025h 300.0-W Aqueous df-wc ,I
I SEL Analytes: CL
2108726-011B NO2/NO3-W-353.2 df-no2/no3
I SEL A11alytes: NO3NO2N
2108726-0llC 8260D-W-DENlO0 VOCFridge 3
•l• •• .J Test Group: 8260D-W-DENJ 00; # of Analytes: 4./ 11,of Surr: 4
Printed: 08/26/21 14:01 LABORATORY CHECK: %M 0 RT □ CN D TAT 0 QC □ LUO □ HOK __ HOK __ HOK __ COG Emailed
WORK ORDER Summary WorkOrder: 2108726 Page3 of3
Client: Energy Fuels Resources, Inc. Due Date: 9/10/2021
Sample ID Client Sample ID Collected Date Received Date Test Code Matrix Se) Storage
2108726-012A 1W4-39_08242021 8/24/2021 095 lh 8/26/2021 1025h 300.0-W Aqueous df-wc
1 SEL Analytes: CL
2108726-012B NOl/NOJ-W-353.2 df •no2/no3
1 SELAnalytes: NO3NO2N
2108726-012C 8260D-W-DENlOO VOCFridge 3
Test Group: 8260D-W-DENJO0; #of Analytes: 4/# ofSu,r: 4
2108726-0BA 1W4-11_08242021 8/24/2021 1006h 8/26/2021 1025h 300.0-W Aqueous df-wc
I SEL Analytes: CL
2108726-013B NOl/NOJ-W-353.2 df-no2/no3
1 SEL Analytes: NO3NO2N
2108726-0BC 8260D-W-DENlOO VOCFridge 3
Test Group: 8260D-W-DENJ0O; # of Analytes: 4 I# of Surr: 4
2108726-014A 1W4-22_08242021 8/24/2021 0935h 8/26/2021 1025h 300.0-W Aqueous df-wc
1 SEL Analytes: CL
2108726-014B NOl/NOJ-W-353.2 df •no2/no3
1 SEL Analytes: NO3NO2N
2108726-014C 8260D-W-DENlOO VOCFridge 3
Test Group: 8260D-W-DENJOO; # of Analytes: 4 I# of Su,r: 4
2108726-0lSA 1W4-37_08242021 8/24/2021 0943h 8/26/20211025h 300.0-W Aqueous df-wc
1 SEL Analytes: CL
2108726-015B NOl/NOl-W-353.2 df. no2/no3
1 SEL Analytes: NO3NO2N
2108726-0lSC 8260D-W-DENlOO VOCFridge 3
Test Group: 8260D-W-DENJO0; # of Analytes: 4 I# of Su,r: 4
2108726-016A TW4-60_08242021 8/24/2021 l300h 8/26/2021 1025h 300.0-W Aqueous df-wc
1 SEL Analytes: CL
2108726-016B NO2/NO3-W-353.2 df •no2/no3
1 SELAnalytes: NO3NO2N
2108726-016C 8260D-W-DENlO0 VOCFridge 3
Test Group: 8260D-W-DENJ00; # of Analytes: 4 /# ofSu,r: 4
2108726-017A Trip Blank 8/24/2021 0905h 8/26/2021 1025h 8260D~W-DENlO0 Aqueous VOCFridge 3
Test Group: 8260D-W-DENJ00; #_ o[ Analytes: 41 # of Su,r: 4
Printed: 08/26/2114:01 LABORATORY CHECK: %M O RT □ CN O TAT O QC O LUO 0 HOK ___ HOK __ _ HOK___ COC Emailed ____ _
3
American West
Analytical Laboratories
463 W. 3600 S. Salt Lake City, LIT 84115
Phone# [phone] Toll Free# [phone] L-~ Fax# [phone] Email awal@awa~labs.com
www.awal-labs.com
Client: Energy Fuels Resources, Inc.
Address: 6425 S. Hwy. 191
Blanding, UT 84511
Contact: Tanner Holliday
Phone#: [phone] Cell It.
Email: tholl1day@enere::,fnels.com; [e-mail]
Project Name: 3rd Quarter Chloroform 2021
Project#:
PO#:
Sampler Name: Tanner Holliday
Date
Sample ID: Sampled
TW4-25_08242021 8/24/2021
TW4-40_08242021 8/24/2021
TW4-24_08242021 8/24/2021
TW4-19_08242021 8/24/2021
TW4-01_08242021 8/24/2021
l!W-26_08242021 8/24/2021
T TW4-41_08242021 8/24/2021
e TW4-21_08242021 8/24/2021
Q TW4-02_08242021 8/24/2021
I TW4-04_08242021 8/24/2021
I MW-04_08242021 8/24/2021
! TW4-39_08242021 8/24/2021
I TW4-11_08242021 8/24/2021
RotlnqlJ-by:~ U II / 0810:
SwthJ'lttJre -.. ~ A.I~-'I / 812S/2021
I Tlme:
Prfrrl Namo~ Tanl1GfHol""~ 1100
Rollnqullhud by. Oafo:
Sianaturo
!Thne:
P~nlN,m,e:
R~by. IOate:
l~na+ur1
!Time:
Prlnl Name:
Rollnqul-by. Date:
isloNllure
ITime:
Pnnl Name:
I
Time
Sampled
915
1224
926
1240
1158
958
1207
905
1015
1214
1150
951
1006
Received by:
~lnnettxe
Print Namo:
CHAIN OF CUSTODY
AU analysis wlll be conducted using NELAP accl'13dited methods and all date will be reported using AWAL's standard analyte lisl:6 and reporting
llmlts (POL) unless ~pecifically requested otherwise on this Chaln of Cuslt>dy and/or attached doa.Jmentation,
QC Leval: I Tum Around Time: Unless other arrangement& have been made,
signed reports .;11 be emailed by 5:00 pm on
3 Standard the day they are due.
X Include EDD:
LOCUS UPLOAD
EXCEL
Field Filtered For.
For Compliance With:
O NELAP
□ RCRA
□ CWA
□ SOWA
□ ELAP/A2LA
o' □ NLLAP ~ 0 □ Non-Compliance ~ C u' □ Other: "l 12 (1. ... C ., :ll Cl) 0 IO C C ~ ·.; m 0 C: :;;; C Known Hazards 0 Q) Ii!; Ii) ..... ::!:. " (.) C. N 0 & 'o E g 0 ~ .. Samole Comments .. rn
5 w X X X
5 w X X X
5 w X X X
5 w X X X
5 w X X X
5 w X X X
5 w X X X
5 w X X X
5 w X X X
5 w X X X
5 w X X X
5 w X X X
5 w X X X
Dale: Special Instructions:
limo:
,
J._ I u ~72-<c
AWAL Lab Sample Set#
Page 1 of 2 r~ ,. .. I
Laboratory Use Only
Samples '(/o«r. 1,_,A.f5
Shipped or dellvered
~·~,0 2
3 Temperature •c
4 Recelved Broken/Leaking
(lll1l)rOJ)811y -~ y N
5CT Preserved V N
hodtod atbench
y N
6 Received Within
(SldlngTrnes \ N
co5~:o~P~
Y\ N
2 Urken on Outor Packogo ' C N NA
3 Present on Sample G y N
4 Unbroken on sample C: \
Y N NA
j
Oiscrepandes Between Semple
Labels ;nd CDC Reconf~
Roc:oivedby: ~( .e,1.,, ,..J---Z.-,, L IOnlo~ha'/ "Z.. / See the Analytical Scope of Work for Reporting Limits and voe
1-cr..n,utwo . ......, analyte list.
z-11,,,,, 1-L ... ~. 7_.,,,, !Time:/ IC 2."i" Pr1nl Nllfflil:
Received by: I Date:
lc1nnature
Time:
Print Name:
Received by: Date:
5""'""''"
fTime:
Print Name:
American West
Analytical Laboratories
463 W. 3600 S. Salt Lake City, lJT B4115
Phone# [phone] Toll Free# [phone]
~ Fax# (801) 26~687 Emal [e-mail]
www.awal-labs.com
Client: Energy Fuels Resources, Inc.
Address: 6425 S. Hwy. 191
Blanding, UT 84511
Contact: Tanner Holliday
Phone#: [phone] Cell#:
Emal: [e-mail]; [e-mail]
Project Name: 3rd Quarter Chloroform 2021
Project#:
PO#:
Sampler Name: Tanner Holliday
Date
Samele ID: Samoled
14 : TW4-22_08242021 8/24/2021
15 , TW4-37_08242021
,e, I TW4-60_08242021
17 'TRIP BLANK
18 I
1D I
20 I
I 21
22 !
23 I
I 2A
25
2e
sollt)qulsl!Od by. ___ ... L ··-~ ~nalure JJ # / ,,_ ,
Pr1nlNamo: Tanner~ .....
j<ollnqulSl'lod by:
~nature
Print-
Rolinqulolied by.
lslnnmuro
IP,[ntNama:
Roinqwshod by:
ls.onat..,.
PrintNama:
8/24/2021
8/24/2021
8/24/2021
Dato: = Time:
110<
Dnla;
ITTl')r.
11>410:
mmr.
Om"
rnme:
I
Time
· Samoled
935
943
1300
905
Received by:
Sianeture
Print Name,
CHAIN OF CUSTODY
All analysis viii be conducted using NELAP ecaudltad methods and all data YAII be reported using AWAf."s standard analyte llsls and n,porting
limits (POL) IMlless spedficelly n,queo!ed othe!wise on lllls Chain of Custody and/or altachad -·
QC Level: I Tum Around Time: Unless other arrangements hove been made,
signed repor1s will be emailed by 5:00 pm on
3 Standard the day they era due.
X Include EDD;
LOCUS UPLOAD
EXCEL
Field Filtered For.
For Compliance With:
□ NELAP
□ RCRA
□ CWA
□ SOWA
□ ELAP/A2LA
o' □ NLLAP ~ ci □ Non-Compliance
Ci 0 D' □ Other:
~ OJ E )( .. 0 ., 0 "' C: :s (') ~ ID g 0 C'l ::;; 0 ~ Known Hazards 0 Q) II) ..... :::t. .. (J a. N 0 & 'o E 0 tl g ID Sample Comments "' <I) 12:;
5 w X X X
5 w X X X
5 w X X X
3 w X
)ate: Special Instructions:
nme:
6l_(j){7;. ~
AWAL Lab Sample Set#
Page 2 of 2
I°"· -I
Laboratory Use Only
Samples Were: ~
Shipped ~ollvorad 1
Ambleffloe O _ () 2
3 Temperature ~ •c
4 Rec:e!ved Brolconluoklng
(ln,p,opelly s«ilc:) y N
5~ f'ruserved y N
o!benct,
y N
6 llecoivodWitNrl C)k!lng Times
N
coc Tepe Wes:
1(:___,.\ on Out,,, Padcage Y • N NA 2G~°" on Outer Package Y N NA
3 Present on Sample
y N e
4 Unbroken on Sample Q y N
Discrepancies Between Sample
Labels and CDC Recorrl?
y (j
Roc<ivOd by'~ -.f
S""'"'uno ~-!Y1.-~ / D«ir~/2t h i See the Analytical Scope of Work for Reporting Limits and voe
analytelist .
Zl,1A,:,.__ .i___L } f 7 Time: /(\?.,,.. Pont Name: ./
Received by: 7 7 Dale:
Slonab.Jre
Time:
IPnntName:
Recolved by: !Date:
Sianaltwe
rrtme:
Print Name:
Analysis
Ammonia
COD
Cvanide
Metals
NO2/NO3
O&G
Phenols
Sulfide
TKN
TPQ4
CrVI+
Procedure:
Frequency:
Pr_eservatiQ_n Check Sheet
s le Set Ext,
Preservative I 2 3 l/ 5
nH<2 H2SO4
oH<2H2SO4
oH>l0NaOH
0H<2HNO3
oH<2H2SO4 v"'< \/4,. 1/3, V~1 \/_ r
nH<2HCL r ' r r ,,.,
oH<2H2$O4
oH >9 NaOR ZnAC
oH -<2 li2SO4
oH<2H2SO4
oH >9 (NIL )2SO4
Pour a small amount of sample in the sample lid
Pour sample from lid gently over wide range pH paper
Do Not dip the pH paper in the sample bottle or lid
(;.
v..,,. -
dpH
ri !?
¼< tl~
/' /'
C/ J (j
VL< 1/,. ~ ,-7-"
1)
2)
3)
4)
5)
6)
7)
If sample is not preserved, properly list its extension and receiving pH in the appropriate column above
Flag COC, notify client if requested
Place client conversation on COC
Samples may be adjusted
All samples requiring preservation
*
+
A
#
•
The sample required additional preservative upon receipt.
The sample was received unpreserved.
The sample was received unpreserved and therefore preserved upon receipt.
The sample pH was unadjustable to a pH < 2 due to the sample matrix.
The sample pH was unadjustable to a pH > __ due to the sample matrix interference.
It
1/~ r
Lab Set ID:
pH Lot#:
I 'J.... !.,
,I.e.. ~/4<
fl/
,/,,(
// --p' r
;2.. I C fr" z '2 V
[t 7 ca
1<.. ICn
ii~< ~
Ir
rev 10-28-2020
TabH
Quality Assurance and Data Validation Tables
H-1: Field QA/QC Evaluation
1x Casing 2x Casing
Location Volume Volume Pumped Volume Volume Check Conductivity RPD
PIEZ-01 okay 2309 NC
PIEZ-02 okay 926.0 NC
PIEZ-03A okay 1173 NC
TWN-01 24.16 55.00 48.32 okay 907.0 901.0
Continuously Pumped well
Oontinciously Pumped well
NA Continuously Pumped well
NM= Not Measured. The OAP does not require the measurement of redox potential or turbidity in wells that were purged to dryness.
RPD = Relative Percent Difference
Dissolved
pH RPD Temperature RPD Redox RPD Turbidit RPD Ox en
7.26 NC 15.75 NC 499 NC 101.0 NC 68.0
7.40 NC 15.64 NC 494 NC 1.5 NC 22.3
NC 15.92 NC NC 10.4 NC
15.71 15.65 2.0 2.0
16.55
fhe 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.
RPD
NC
NC
NC
-0 mg 1me va uat10n H 2 H Id . T' E 1
All ,wed
Hold Time Hold Time Hold Time
Location ID Parameter Name Sample Date Analysis Date (Davs) (Days) Check
PIEZ-01 Chloride 8/19/2021 9/7/2021 19 28 OK
PIEZ-01 Nitrate + Nitrite as N 8/19/2021 8/27/2021 8 28 OK
PIEZ-02 Chloride 8/19/2021 9/7/2021 19 28 OK
PIEZ-02 Nitrate + Nitrite as N 8/19/2021 8/27/2021 8 28 OK
PIEZ-03A Chloride 8/19/2021 9/7/2021 19 28 OK
PIEZ-03A Nitrate + Nitrite as N 8/19/2021 8/27/2021 8 28 OK
TWN-01 Chloride 8/18/2021 9/6/2021 19 28 OK
TWN-01 Nitrate + Nitrite as N 8/18/2021 8/24/2021 6 28 OK
TWN-02 Chloride 8/18/2021 9/6/2021 19 28 OK
TWN-02 Nitrate+ Nitrite as N 8/18/2021 8/24/2021 6 28 OK
TWN-03 Chloride 8/19/2021 9/7/2021 19 28 OK
TWN-03 Nitrate + Nitrite as N 8/19/2021 8/27/2021 8 28 OK
TWN-04 Chloride 8/18/2021 9/6/2021 19 28 OK
TWN-04 Nitrate + Nitrite as N 8/18/2021 8/24/2021 6 28 OK
TWN-07 Chloride 8/19/2021 9/7/2021 19 28 OK
TWN-07 Nitrate + Nitrite as N 8/19/2021 8/27/2021 8 28 OK
TWN-18 Chloride 8/17/2021 9/6/2021 20 28 OK
TWN-18 Nitrate + Nitrite as N 8/17/2021 8/24/2021 7 28 OK
TWN-18R Chloride 8/17/2021 9/6/2021 20 28 OK
TWN-18R Nitrate+ Nitrite as N 8/17/2021 8/24/2021 7 28 OK
TWN-20 Chloride 8/19/2021 9/6/2021 18 28 OK
TWN-20 Nitrate + Nitrite as N 8/19/2021 8/27/2021 8 28 OK
TWN-21 Chloride 8/19/2021 9/6/2021 18 28 OK
TWN-21 Nitrate + Nitrite as N 8/19/2021 8/24/2021 5 28 OK
TWN-60 Chloride 8/18/2021 9/6/2021 19 28 OK
TWN-60 Nitrate + Nitrite as N 8/18/2021 8/24/2021 6 28 OK
TWN-65 Chloride 8/17/2021 9/6/2021 20 28 OK
TWN-65 Nitrate + Nitrite as N 8/17/2021 8/24/2021 7 28 OK
TW4-22 Chloride 8/24/2021 9/9/2021 16 28 OK
TW4-22 Nitrate + Nitrite as N 8/24/2021 8/27/2021 3 28 OK
TW4-24 Chloride 8/24/2021 9/7/2021 14 28 OK
TW4-24 Nitrate + Nitrite as N 8/24/2021 8/27/2021 3 28 OK
TW4-25 Chloride 8/24/2021 9/7/2021 14 28 OK
TW4-25 Nitrate + Nitrite as N 8/24/2021 8/27/2021 3 28 OK
TW4-60 Chloride 8/24/2021 9/9/2021 16 28 OK
TW4-60 Nitrate + Nitrite as N 8/24/2021 8/27/2021 3 28 OK
H-3: Analytical Method Check
Nitrate
Chloride
E353.1 or E353.2
A4500-Cl B or A4500-Cl E
orE300.0
Mefbo.d Used ti Lati
E353.2
E300.0
Both Nitrate and Chloride were analyzed with the correct analytical method.
H4R -eporunj! 1m1t ec L .. Ch k -·~ Required
:, Lab Reporting Dilution Reporting RL
Location Analyte Limit Units Qualifier Factor Limit Check
PIEZ-01 Chloride 1 mg/L 10 1 OK
PIEZ-01 Nitrate+ Nitrite as N 0.1 mg/L 10 0.1 OK
PIEZ-02 Chloride I mg/L 5 I OK
PIEZ-02 Nitrate+ Nitrite as N 0.1 mg/L 10 0.1 OK
PIEZ-03A Chloride 2 mg/L 20 I OK
PIEZ-03A Nitrate+ Nitrite as N 0.1 mg/L 10 0.1 OK
TW4-22 Chloride 10 mg/L JOO 1 OK
TWN-01 Chloride I mg/L 10 1 OK
TWN-01 Nitrate + Nitrite as N 0.1 mg/L 10 0.1 OK
TWN-02 Chloride 1 mg/L 10 1 OK
TWN-02 Nitrate+ Nitrite as N 0.1 mg/L 10 0.1 OK
TWN-03 Chloride 2 mg/L 20 1 OK
TWN-03 Nitrate+ Nitrite as N 0.2 mg/L 20 0.1 OK
TWN-04 Chloride 1 mg/L 10 1 OK
TWN-04 Nitrate + Nitrite as N 0.1 mg/L 10 0.1 OK
TWN-07 Chloride 2 mg/L 20 I OK
TWN-07 Nitrate+ Nitrite as N 0.1 mg/L 10 0.1 OK
TWN-18 Chloride 1 mg/L 10 1 OK
TWN-18 Nitrate + Nitrite as N 0.1 mg/L JO 0.1 OK
TWN-18R Chloride 1 mg/L u 1 1 OK
TWN-18R Nitrate + Nitrite as N 0.1 mg/L u 10 0.1 OK
TWN-20 Chloride 2 mg/L 20 1 OK
TWN-20 Nitrate + Nitrite as N 0.1 mg/L 10 0.1 OK
TWN-21 Chloride 2 mg/L 20 I OK
TWN-21 Nitrate+ Nitrite as N 0.1 mg/L 10 0.1 OK
TWN-60 Chloride 1 mg/L u 1 I OK
TWN-60 Nitrate + Nitrite as N 0.1 mg/L u 10 0.1 OK
TWN-65 Chloride 1 mg/L 10 1 OK
TWN-65 Nitrate+ Nitrite as N 0.1 mg/L 10 0.1 OK
TW4-22 Nitrate+ Nitrite as N 0.5 mg/L 50 0.1 OK
TW4-24 Chloride 10 mg/L 100 1 OK
TW4-24 Nitrate+ Nitrite as N 0.5 mg/L 50 0.1 OK
TW4-25 Chloride 5 mg/L 50 I OK
TW4-25 Nitrate + Nitrite as N 0.1 mg/L 10 0.1 OK
TW4-60 Chloride 1 mg/L u I I OK
TW4-60 Nitrate + Nitrite as N 0.1 mg/L u 10 0.1 OK
H-5 QNQC Evaluation for Sample Duplicates
Chloride 42.9 44.1 2.76
Nitro en 0.199 0.208 4.42
H-6 QC Control Limits for Analysis and Blanks
Method Blank Detections
All Method Blanks for the quarter were non-detect.
Matrix SoiktL%~ Recoven, Comoa · ~ ..........
Lab Report Lab Sample ID Well Analyte MS %REC
2108726 2108726-001 TW4-25 Nitrate
2108726 2108726-005 TW4-01 Nitrate
2108726 2108726-015 TW4-37 Nitrate*
* -Recovery was not calculated because the analyte of the sample was greater than 4 times the spike amount
NC -Not calculated
Laboratory Control Sample
All Laboratory Control Samples were within acceptance limits for the quarter.
112
113
NC
REC
MSD%REC Range RPD
111 90-110 0.261
111 90-110 1.39
NC 90-110 NC
2108638
2108726
PIEZ-01, PIEZ-02, PIEZ-03A, TWN-1, TWN-2, TWN-3, TWN-4,
TWN-7, TWN-18, TWN-18R, TWN-20, TWN-21, TWN-60, TWN-65
TW4-22, TW4-24, TW4-25, TW4-60
1.0 °C
0.0 °C
H-8 Rinsate Evaluation
All rinsate and DI blank samples were non-detect for the quarter.
Tab I
Kriged Current Quarter Isoconcentration Maps
MW-21
EXPLANATION
... . . .... ,,,
..
~'
MW-3A
NS = not sampled; ND = not detected
...._ 10 kriged nitrate isocon and label
TWN-20
Dl.96
TW4-42
¢3.3
TW4-40
♦1.s
MW-38
-¢,17
MW-32
e ND
TW4-7
0 4.6
TWN-1
<>2.s
PIEZ-1
.i 7.6
temporary perched nitrate monitoring
well installed April, 2021 showing
concentration in mg/L
temporary perched monitoring well
installed April, 2019 showing
concentration in mg/L
temporary perched monitoring well
installed February, 2018 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 showing
concentration in mg/L
ijp
MW-29
':
.....
\
,\
\
~ ..
N"S) • MW-01
abtuI1Q11t.W
TWN.os
~
' .,.~
ab11i\lffene'
lWN-15
ollim1lbll.e • 0 -' , ~---).:~~~ ti. "TWN-10
lfj l
MW-1'8 --~~ -~· t,_ L":.
I• ...
a-fiiu{db)lO
-~s· rw;.09
" :; " 1WN-06 (b;,~
PJEZ'~ I
u1t.a1tifmed~ ~: l'WN-08 • MW-19
~ -
......... _,,I,,'
.1._-r 1 1'.wH3
~-01.'8 ~1~ ,~~t~la z;JJ'-36
).94411
fiw~;1~l.16-6'.. •-, .. / TW4-14
•:~.• _ -.• 1Wt(l~ ~13-g ~7TW• --~ u, 1 lW4l3(l \St ·~
~n . .,, ~4H ·•
2,9' ..
MW-40
6' ..
MW-2'2
1 mile
NOTES: MW-4, MW-26, TW4-1, TW4-2, TW4-4, TW4-11 , TW4-19, TW4-20, TW4-21, TW4-37, TW4-39, TW4-40 and TW4-41 are
chloroform pumping wells; T'.".'4-22, TW4-24, TW4-25 and TWN-2 are nitrate pumping wells; TW4-24A installed December, 2019
~
HYDRO
GEO
CHEM,INC.
KRIGED 3rd QUARTER, 2021 NITRATE (mg/L)
(NITRATE+ NITRITE AS N)
WHITE MESA SITE
APPROVED DATE REFERENCE FIGURE
H:/718000/nov21 /nitrate/Unt0921 .srf 1-1
1 ....... .,._, ~: .. ,
~,:,,
IIW-21
EXPLANATION
'I.
'
~ • MW-3A
NS = not sampled; ND = not detected
'-100 kriged chloride isocon and label
TWN-20
0 35
TW4-42
¢11
TW4-40
♦32
MW-38
-<>44
MW-32
e 31
TW4-7
0 43
TWN-1
◊36
PIEZ-1
'i)70
temporary perched nitrate monitoring
well installed April, 2021 showing
concentration in mg/L
temporary perched monitoring well
installed April, 2019showing
concentration in mg/L
temporary perched monitoring well
installed February, 2018 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 showing
concentration in mg/L
3"t. a lWN-20
',. ,-.-·-• MW-01 t~!;i!.~(I~
~S'! • MW-1.8
~-I ..
altob{lwe\l.l
l'WN-10
lWN-08 .
il\'\11;~».!ll ... TWN.09
PIEZ.01
~IUJ!~ll
TWN·11
-nta;.ul~'!ra.1
1WN.t1a sJ • MW-19
45 ·o, ~ TWH-18 .
~-~
rfl
1 mile
TW4.:a ~~2
~~-13
:(I 8 TW4-36
O,~~
~4-1•
'oTW~~J4if-31
3~1 ... MW-40
:: MW~
~ ol/0
TW4-35
NOTES: MW-4, MW-26, TW4-1, TW4-2, TW4-4, TW4-11, TW4-19, TW4-20, 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; TW4-24A installed December, 2019
HYDRO
GEO
CHEM, INC.
KRIGED 3rd QUARTER, 2021 CHLORIDE (mg/L)
(NITRATE + NITRITE AS N)
WHITE MESA SITE
APPROVED DATE REFERENCE FIGURE
H:/718000/nov21/chloride/Ucl0921 .srf 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
9/22/2009 7.3 78
10/27/2009 7.4 61
6/2/2010 7.2 52
7/19/2010 6.8 52
12/10/2010 6.5 60
1/31/2011 7 60
4/25/2011 6.8 58
7/25/2011 7 53
10/19/2011 6.6 55
1/11/2012 7.1 78
4/20/2012 6.6 58
7/27/2012 7.2 56
10/17/2012 7.66 55
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
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
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
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
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
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
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
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
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
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
TWN-20
Date Nitrate (mg/I)
6/3/2021 1.88
8/19/2021 0.96
Chloride (mg/I)
50.0
35.3
TWN-21
Date Nitrate (mg/I) Chloride (mg/I)
6/3/2021 1.03 41.9
8/19/2021 1.16 40.5
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
3/12/2018 8.61
6/8/2018 0.494
8/22/2018 2.55
11/28/2018 0.233
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
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
6/9/2021 21.5
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
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
TW4-24
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
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
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
MW-30
Date Nitrate (mg/I) Date Chloride (mg/I)
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
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
MW-30
Date Nitrate (mg/I) Date Chloride (mg/I)
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
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 18.5 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 17.5 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
MW-30
Date Nitrate (mg/I) Date Chloride (mg/I)
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
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
4/14/2021 17.7
5/11/2021 18.6
6/8/2021 17.0
7/29/2021 20.6
8/9/2021 16.5
9/8/2021 15.4
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
1/24/2012 21.0 8/6/2012 175
2/13/2012 21.0 9/18/2012 172
MW-31
Date Nitrate (mg/I) Date Chloride (mg/I)
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
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
MW-31
Date Nitrate (mg/I) Date Chloride (mg/I)
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
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
MW-31
Date Nitrate (mg/I) Date Chloride (mg/I)
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
4/13/2021 18.6
5/10/2021 18.9
6/7/2021 20.6
7/27/2021 18.7
8/9/2021 15.7
9/7/2021 16.0
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
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p~-oaa
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ci
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9 ~-ABV\I
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0 0 LO
C\J
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{7/6w) ,-
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oc-unr
L~-das
9~-A'BI/\I
v~-oaa
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g ~ -ABV\I
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~i-JdV
1-------1--------1------1-----+-------1-------4--~i-uer
0 0 (0
0 0 10
0 0 .._,.
0 0 (1j6w)
0 0 C\I
0 0
U)
C
0 .:: ~G-ABV\I C'IS ... -C Cl) u
C 0 (.)
Cl) -C'IS ... -~ z ,....
N ~G-JdV I z ~
TWN-21 Chloride Concentrations
42.0 -r--------------------------------------------,
41.8 +-------------------------------------------
41.6 -l--------------------------~-------------1
41.4 ;------------------------------~----------------!
j1.2 +------------------------------------------!
E -
41.0 +-----------------------------------------------
40.8 -1-------------------------------------~--------I
40.6 +------------------------------------------------1
40.4 ,... ,... ,... ,... ,... ,...
C\J C\J C\J C\J C\J C\J I I ,!. I I 6.. C .0 >, :i ro Q) Q. ro Q) ..., LL <( ~ ..., en
TW4-19 Nitrate Concentrations
70.00 -,-----------------------------------------------
60.00 +---------------------------------------------
50.00 --------------------------------------------
40.00 -t-------11----------------------------------------------
30.00 +---------------1------------------------------
20.00 -!---+--------------------------------------------
10.00 I I :a. A I I I I I I I I fY I IC I e ■
0.00 I , • •• • ,.., _. ~ • ,u -, -
~ ~ ~ ~ ~ ~ ~ ~ ~ y y ◊ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
I-' I-' N V, 0 V, 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
N w w V, 0 V, 0 0 0
.,,.
0 0
.,,.
V, 0
V, 0 0
-I :E ~ I .....
U)
n ::r -0 .., -· a.
ti)
n
0
::::J n
ti)
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al ,.... -· 0
::::J "'
l'r,
0~ or-~ 0~9 or-&>c or. --o
(5' ~ 'I' :t'o ~ ~ S'
<5'C, 0/' or.? ,9 ~ I' co~
o> ~ co~ c;,; O;-
<C, ~ °c~ 9
V) <r, '?I' oc "'6 C ..9 -1-7'
0 co~ ·-..9 ~ 9 +' co~ "' c;-; 01' ~ Se, c.<'2: +' O~--S-C SC, <5'l' a, or. "'6 u I> /4i 7'
C 7'o ~ ~ 0 .6C, <5'r. u 02: --0 c.<' ~ 'I' a, l"o ~
+' c;-; s
"' c.<'r, c.<',t: or. -1-~ c:-.~" +' ·-"o ~ z ~ s>
~C, ~ .... 02: 01'
N l'C, -1-/'
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"""
l'C, ~/' s 02: '? 0 '? I' :to~ I-0~ 'o ~ ~ 01' 6a 01: Ve~
6a '?2: Ve? ,9, ~ I'
(:)0 ~ ~ J>
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<a ol' Ve "'o & ~ 'I' Vo~
,Sl ~ 9 Vo~ c;,. I' -Sa .6/' Ve~ -Sa --0~
q Ve? 0 q 0 q 0 ~ I'
LI') c:i LI') c:i LI') c:i ~ N N ,-i ,-i
I-' N w .,:,. u, O'I 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 -I 12/1/2010 ~
5/1/2011 ~ I
10/1/2011 N
i,-a,
3/1/2012 n
8/1/2012 :::r -1/1/2013 0 .., -· 6/1/2013 Q.
11/1/2013 tD
n 4/1/2014 0
9/1/2014 :::s n
2/1/2015 tD :::s
7/1/2015 ,... ..,
12/1/2015 QJ ,... -· 5/1/2016 0 :::s
10/1/2016 V,
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
V,
C
0 ·-....,
ns I,,. ....,
C
QI u
C
0 u
QI ....,
~ ...., ·-z
N N I
111::1' 3: I-
1/8w
2/28/2007
6/27/2007
8/15/2007
10/10/2007
3/26/2008
6/25/2008
9/10/2008
10/15/2008
3/11/2009
6/24/2009
9/15/2009
12/29/2009
3/3/2010
6/15/2010
8/12/2010
8/24/2010
10/13/2010
2/23/2011
6/1/2011
8/17/2011
11/16/2011
1/19/2012
6/13/2012
9/12/2012
10/4/2012
2/11/2013
6/5/2013
9/3/2013
10/29/2013
1/27/2014
5/19/2014
8/11/2014
10/21/2014
3/9/2015
6/8/2015
8/31/2015
10/19/2015
3/9/2016
5/23/2016
7/25/2016
10/12/2016
3/8/2017
6/13/2017
7/26/2017
10/11/2017
3/12/2018
6/8/2018
8/22/2018
11/28/2018
3/8/2019
6/5/2019
9/4/2019
12/10/2019
2/19/2020
5/27/2020
9/4/2020
10/28/2020
2/23/2021
6/9/2021
8/24/2021
0
I-' 0 0
N 0 0
w 0 0
mg/L
+'" 0 0
V, 0 0
O'I 0 0
-..J 0 0
00 0 0
-I :E ~ I N N
n :::r -0 ., -· Q. n,
n 0
::::s n n,
::::s ,...
al ,... -· 0
::::s
U)
TW4-24 Nitrate Concentrations
60
so
40
.....
tio 30 E
20
10
0
~~~~~~~~yy~~~~~~~~~~~~~~§§~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ N~~~&\v~&~~~~~~N~~&~,~~,~w~~~~~~& ~~ ~~' ~V ~ V ~ ~ ~ V ~ ~ ~ ~ ~ ~ ~ V V ~
V)
C
0 ·-...,
~ ...,
C cu u
C
0 u
cu
"'C ·-'-0
..c u
~ N I ~ ~ I-
0 0
"'" .--t
0 0 N .--t
0 0 0 .--t
0 0 00
1/3w
0 0 \0
0 0
"'"
0 0 N
0
...I ~ E
TW4-25 Nitrate Concentrations
25
20
15
10
5
0
~~~~~~~~~~yy~~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~#~~~~~~~~~~~~~~~~~~~~~#~#~## J~J~J~ ~4~4~ #~~ #4~~#~~ ~4#
V,
C
0 ·-+,I ra '-+,I
C cu u
C
0 u
cu
"'C ·-'-0
.c u
a.n
N
I ~ s I-
0 LI')
"""
0 0
"""
0 LI')
CV)
0 0
CV)
0 LI')
N
1/Sw
0 0 N
0 LI') .... 0 0 .... 0 LI') 0
I-' I-' N N 0 V, 0 V, 0 V, 0 0 0 0 0 0
6/22/2005
6/21/2006
8/22/2007
8/4/2008
8/24/2009
4/27/2010
9/14/2010
1/10/2011
5/10/2011
9/7/2011
1/24/2012
5/2/2012
9/19/2012 s: 1/23/2013
5/15/2013 :e
9/18/2013 I w
1/8/2014 0
5/14/2014 2 -· 9/9/2014 ,...
""I 1/21/2015 DJ ,...
5/12/2015 tT)
9/15/2015 n
1/20/2016 0
:::::s 5/4/2016 n
9/14/2016 tT)
:::::s
1/18/2017 ,...
""I 5/2/2017 DJ
9/12/2017
,... -· 0 1/23/2018 :::::s
5/15/2018 V,
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
I-' I-' N N w l.n 0 l.n 0 l.n 0 0 0 0 0 0 0 0
6/1/2005
12/1/2005
6/1/2006
12/1/2006
6/1/2007
12/1/2007
6/1/2008
12/1/2008
6/1/2009
12/1/2009 s
6/1/2010 :E
12/1/2010 I w
6/1/2011 0
n 12/1/2011 :::r -6/1/2012 0
""I 12/1/2012 -· a.
6/1/2013 tD
12/1/2013 n 0
6/1/2014 ::::, n 12/1/2014 tD
6/1/2015 ::::,
~
""I 12/1/2015 QJ
~
6/1/2016 -· 0
12/1/2016 ::::,
"' 6/1/2017
12/1/2017
6/1/2018
12/1/2018
6/1/2019
12/1/2019
6/1/2020
12/1/2020
6/1/2021
MW-31 Nitrate Concentrations
35.0 ....---------------------------------------------
30.0 +----------------------------------------------
25.0 ;-----,~t-----=..------t.------------------11.---------------------
20.0 I I I _, • I I II I I •1 ~ 11 I a. .n_ II .. ,1,a JI • w a * A A
B~ -
10.0 +---------------------------------------------
5.0 +-----------------------------------------------
0.0
,;:,':J> c<o
~--0 1'
<o\" <o\"'V
~ ~ ~ § ~ y ~ ~ ~ ~ ~ ~ ~ ~ ~ 1' 1' 1' ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ # # # # # # # # # # # # # # #
I-' I-' N N Ul Ul .i,. .i,. u, 0 u, 0 u, 0 u, 0 u, 0 0 0 0 0 0 0 0 0 0
6/1/2005
11/1/2005
4/1/2006
9/1/2006
2/1/2007
7/1/2007
12/1/2007
5/1/2008
10/1/2008
3/1/2009
8/1/2009
1/1/2010
6/1/2010 s:
11/1/2010 ~ I
4/1/2011 w ....
9/1/2011 n
2/1/2012 ':S" -7/1/2012 0 ..,
12/1/2012 -· a.
5/1/2013 ti)
10/1/2013 n 0
3/1/2014 ::::s n
8/1/2014 ti)
::::s
1/1/2015 ,.... ..,
6/1/2015 QJ ,.... -· 11/1/2015 0
4/1/2016 ::::s
V,
9/1/2016
2/1/2017
7/1/2017
12/1/2017
5/1/2018
10/1/2018
3/1/2019
8/1/2019
1/1/2020
6/1/2020
11/1/2020
4/1/2021
9/1/2021
TabL
CSV Transmittal Letter
Kathy Weinel
From:
Sent:
To:
Cc:
Subject:
Attachments:
Dear Mr. Goble,
Kathy Weinel
Tuesday, November 2, 2021 12:09 PM
Phillip Goble
Thomas Rushing; David Frydenlund; Logan Shumway; Garrin Palmer; Scott Bakken
Transmittal of CSV Files White Mesa Mill 2021 Q3 Groundwater Monitoring
Q3 2021 DTW all programs.csv; Q3 2021 GW Analytical Data.csv; Q3 2021 GW Field
Data.csv
Attached to this e-mail is an electronic copy of laboratory results for groundwater monitoring conducted at the White
Mesa Mill during the third quarter of 2021, in Comma Separated Value (CSV) format.
Please contact me at 303-389-4134 if you have any questions on this transmittal.
Yours Truly
Kathy Weinel
eF ,st1racu Energy Fuels Resources (USA) Inc.
Kathy Weinel
Quality Assurance Manager
t:303.389.4134 I c: I t: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 ii are confidential and may
contain privileged or proprietary information. If you are not the intended recipient(s) please delete this message and notify the sender. You may not use, distribute
print or copy this message if you are not the intended recipient(s).
1
TabM
Residual Mass Estimate Analysis Figure
Tab M -Figures
:ii' ::::,
Q) -I'll E ;: C/1 w
C/1 C/1 I'll :E
G)
E :::, a:
G) -I'll ... -z
45000 ..-------------------------------------------------------,
40000 -!------~----------------------------------------------~
I --
35000
30000
25000 .J-----------H---------------------------------------------1
20000 -l-----------------------~--~------.---.....---,--.....----.--.....-....... --------........ ---1 0 ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ✓?#~??#~~?#~??#~??#~??#~??#~??#~~?#~
~ Nitrate Plume Mass Estimales ---L.near (Nitrate Plume Mass Estimates)
HYDRO
GEO
CHEM,INC.
Time Series of Nitrate Plume Mass Estimates
Approved I Date
SJS
Author Date File Name I Figure
Nmtrend3021.xls M.1
H:\718000\nov21 \nitrate\masscalc\Nmtrend3Q21 .xls: Fig M.1
Tab M -Tables
The Residual Mass Estimate Analysis Tables
Table M.1
Residual Nitrate Plume Mass
residual
plume
auarter 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
Notes:
lbs= pounds