HomeMy WebLinkAboutDRC-2021-020161 - 0901a06880fb639cDry oi
and 1-!ad: Cortot
NOV AP1
Energy Fuels Resources (USA) Inc.
225 Union Blvd. Suite 600
Lakewood, CO, US, 80228
303 974 2140
D 02.01G I
wwwxnerofuels,com
November 16, 2021
Sent VIA E-MAIL AND EXPRESS 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 84114-4880
Re: Transmittal of Q3-21 Data Quality Report ("DQR") for the White Mesa Cell 2 Cover Test
Section Monitoring
Dear Mr. Hansen:
In accordance with the Stipulation and Consent Agreement ("SCA") dated February 23, 2017, between the
Division of Waste Management and Radiation Control ("DWMRC") and Energy Fuels Resource (USA) Inc.
("EFRI"), EFRI constructed a cover performance monitoring test section on Cell 2 in 2016 and initiated
performance monitoring. This letter transmits the data quality report for monitoring data collected during the
third quarter of 2021. Please note that this report is for quality assurance only and does not provide interpretive
information. Interpretive information is provided in annual reports.
For your convenience, two hard copies of the report and two CDs, each containing a word searchable electronic
copy of the files, will be mailed to DWMRC.
If you should have any questions regarding this transmittal please contact me at 303-389-4134.
Yours ve
ENERGY FUELS RESOURCES (USA) INC.
Kathy Weinel
Quality Assurance Manager
CC: David Frydenlund
Garrin Palmer
Logan Shumway
Scott Bakken
November 16, 2021
Sent VIA E-MAIL AND EXPRESS 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 84114-4880
Energy Fuels Resources (USA) Inc.
225 Union Blvd. Suite 600
Lakewood, CO, US, 80228
303 974 2140
www.energyfucls.com
Re: Transmittal of Q3-21 Data Quality Report ("DQR") for the White Mesa Cell 2 Cover Test
Section Monitoring
Dear Mr. Hansen:
In accordance with the Stipulation and Consent Agreement ("SCA") dated February 23, 2017, between the
Division of Waste Management and Radiation Control ("DWMRC") and Energy Fuels Resource (USA) Inc.
("EFRI"), EFRI constructed a cover performance monitoring test section on Cell 2 in 2016 and initiated
performance monitoring. This letter transmits the data quality report for monitoring data collected during the
third quarter of 2021. Please note that this report is for quality assurance only and does not provide interpretive
information. Interpretive information is provided in annual reports.
For your convenience, two hard copies of the report and two CDs, each containing a word searchable electronic
copy of the files, will be mailed to DWMRC.
If you should have any questions regarding this transmittal please contact me at 303-389-4134.
~~r;~
ENERGY FUELS RESOURCES (USA) INC.
Kathy Weinel
Quality Assurance Manager
CC: David Frydenlund
Garrin Palmer
Logan Shumway
Scott Bakken
Q3-21 DATA QUALITY REPORT FOR THE
PRIMARY TEST SECTION
WHITE MESA MILL – TAILINGS MANAGEMENT
CELL 2
ENERGY FUELS RESOURCES (USA) INC.
SAN JUAN COUNTY, UTAH
30 October 2021
1
1.0 INTRODUCTION
This data quality report (DQR) was prepared to record data quality assurance for the White
Mesa Mill cover performance monitoring test section (Primary Test Section) for third
quarter 2021 (Q3-21). This report is documentary and not interpretative. The annual report
includes interpretation of the monitoring data.
The Primary Test Section was constructed in August – September 2016 over tailings
management Cell 2 at Energy Fuels Resources (USA) Inc.’s White Mesa Mill in San Juan
County, Utah. Hydrological monitoring was initiated on 29 September 2016. A large-scale
“ACAP” drainage lysimeter monitors the test section. The lysimeter is equipped to monitor
water balance components and meteorological data.
Fig. 1 shows a profile of the final cover being evaluated at White Mesa (minimum
thickness). Fig. 2 shows a cross-sectional schematic of the lysimeter. The test section is
instrumented with two nests of vertically stacked and co-located sensors to monitor soil
temperature and soil water content, as illustrated in Figs. 1 and 2. The nests are on the
centerline of the test section at the upper and lower third points. Probes in the lower nest
are odd numbered and probes in the upper nest are even numbered. The water content
probes were calibrated with on-site soils collected during construction. Temperature
compensation was incorporated into the calibrations.
Flows from runoff, lateral flow (interflow), and percolation collection points in the test
section are routed via pipe (Fig. 2) to collection basins in a subsurface vault downslope
from the test section. Flow into each basin is monitored by tipping buckets and a pressure
transducer. Flows reported by the tipping bucket are described in terms of “tips,” whereas
water elevations reported by the transducers are reported as “stage.” Flows are reported
in mm of water per unit area. The tipping buckets and pressure transducers were initially
calibrated in September 2016 and have been re-calibrated annually. The most recent
calibration was on 8 September 2021.
2.0 WATER BALANCE DATA
Data in this DQR were collected during Q3-21 from 24 June 2021 to 25 September 2021.
These dates align with automated data downloads and do not correspond precisely to the
start and end of Q3-21. Data for 26 September 2021 and onward will be included in the
Q4-21 report.
Fig. 3 shows the water balance graph for the test sections and Table 1 summarizes the
water balance quantities. Fig. 4 shows cumulative percolation and daily precipitation for
both test sections. Figs. 5-31 show data from each sensor collected during Q3-21. The
quality assurance summary is on pg. 7.
Approximately 109 mm of precipitation was recorded in Q3-21 from a series of storms that
occurred throughout the quarter (Fig. 7). The precipitation received in Q3-21 is 65% of the
total precipitation received in 2021 (Table 1). Heavy storms during this period generated
a small amount of runoff (Figs. 3, 23). Infiltration into the cover was limited to shallow
depths, with water contents responding at the upper most water content sensors (457 mm
bgs, Fig. 13), but not at greater depths (Figs. 14-19). No lateral flow or additional
percolation was induced by the infiltration (Figs. 26, 29). Precipitation that infiltrated was
transpired. Soil water storage remained near an all-time low at the end of Q3-21.
2
Percolation began at the onset of Q3-21 in response to the downward thermal gradient as
observed in previous summers. Percolation continued at a relatively steady rate
throughout Q3-21 (Fig. 29).
3.0 CONCERNS
• Significant differences in water content exist between Probes 1 and 2 and between
Probes 3 and 4. These differences have existed since 2017 and are a response to
lateral water movement above the compacted layer associated with infiltration of
snowmelt in 2017. These differences are not a substantive concern. Comparison of
water contents reported by these probes will continue during future quality control
activities.
4.0 RESOLVED ISSUES
• The reed switches on the lateral flow basin were replaced during the annual
maintenance and calibration exercise on 8 September 2021. The reed switches are
now functioning properly.
• The pressure transducer in the percolation basin stopped recording percolation on 7
July 2021. No data were lost, as percolation is measured by two other devices (70-mL
tipper and 1-L tipper). Inspection of the percolation basin during the annual
maintenance and calibration exercise indicated that the flout was not functioning,
allowing water to continuously drain from the basin and precluding stage to develop
that could be measured with the pressure transducer. The flout box was found to be
leaking and the flexible coupling had become stiff and inflexible. Both were replaced
to resolve the issue. Flexible couplings in the runoff and lateral flow basins were also
replaced as a preventative measure. These repairs resolved the issue with the
pressure transducer measurement in the percolation basin, and are intended to
prevent future problems in the other basins.
• The modem was inspected during the annual maintenance and calibration exercise
and was functioning properly. Discussions with Verizon indicated that the software
changes made in Q4-20, which include a protocol that resets the modem on a daily
basis, is the best means to resolve the connectivity malfunctions that occurred in Fall
2020. No connectivity issues have occurred since this software change was made in
Q4-20. Thus, the modem was not replaced.
5.0 ACTION ITEMS
• Continue comparing water content Probes 1 and 2 and Probes 3 and 4.
3
Fig. 1. Schematic of cover profile evaluated at White Mesa.
0
0
0
0
0.5 ft Erosion Layer
3.5 ft Growth Medium
3.0 ft Compacted Cover
2.5 ft Interim Layer
0 = WCR or thermocouple
4
Fig. 2. Schematic of lysimeter used for the White Mesa Primary Test Section.
rosion layer (0.5 ft}
____________________________ Growth Medium (3.5 ft) ____________________ _
Root Barrier
Sump
Percolation Pipe
Compacted
Subgrade
Compacted Cover (3.0 ft)
......................... Interim Cover (2.S_ft).
60 mil LLDPE GM Geocomposite Drain Compacted
Subgrade
60mil
LLDPE
GM
5
Table 1. Water balance quantities for the final cover test section at White Mesa from 09/29/16 to
09/25/21.
Calendar
Year
Water Balance Quantities (mm)
Precipitation Runoff Lateral
Flow ET D
Storage Percolation
2016 59.9 0.03 0.00 34.6 16.9 0.00
2017 222.7 0.06 0.00 324.8 39.4 0.65
2018 163.4 0.09 0.00 124.6 37.9 0.90
2019 309.1 0.28 0.00 325.9 0.9 1.01
2020 130.4 0.04 0.00 175.6 -64.5 0.89
2021 166.0 0.17 0.00 173.8 -8.8 0.50
*damage from vault flooding precluded measuring flows from 7 February 2017 – 25 March
2017.
6
Fig. 3. Water balance quantities for the final cover test section at White Mesa from
09/29/16 to 09/25/21.
0
200
400
600
800
1000
1200
0
1
2
3
4
5
9/20/16 7/23/17 5/25/18 3/27/19 1/27/20 11/28/20 9/30/21
Soil Water
Storage
ET
Surface
Runoff
Percolation
Lateral Flow
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Precipitation
White Mesa, UT
7
DATA QUALITY REPORT SUMMARY: Q3-21
White Mesa Primary Test Section
06/24/21 through 09/25/21
Water Balance Summary
• Table 1 summarizes the water balance of the test section since inception.
• Fig. 3 presents the water balance graph for the test section since inception.
• Fig. 4 shows graphs of daily precipitation and cumulative percolation for the test section
since inception.
Meteorology
• The battery and solar panel are working properly (Fig. 5).
• All meteorological sensors are working properly (Figs. 6-12).
• The on-site precipitation data are generally consistent with, but slightly lower than, the
NWS data recorded at the Blanding station (KBDG, 37.62° N, 109.47° W, Elev.: 6001
ft) (Fig.7). Independent precipitation measurements recorded by the Geonor gage and
the tipping bucket are in good agreement (Fig. 8).
• Solar radiation data are consistent with data recorded at the NWS Blanding station
(Fig. 12).
Test Section
• The WCR probes to measure water content are functioning properly (Figs. 13-19).
Differences in water content of approximately 0.12 are reported by Probes 3 and 4 in
the compacted layer at 2134 mm bgs (Fig. 18). Differences in water content of
approximately 0.10 are reported by Probes 1 and 2 in the interim layer at 2743 mm
bgs (Fig. 19). These differences in water content are real and reflect spatial variations
in water content that remain from the deep penetration of a wetting front in Q1-17.
• The thermocouples used to measure soil temperature are functioning properly (Fig. 20).
• Flows reported by the transducer and tippers for runoff are reasonably consistent
(Figs. 21-23).
• Flows reported by the transducer and tippers for lateral flow are reasonably consistent
(Figs. 24-26).
• Flows reported by the transducer and tippers for percolation are reasonably consistent
after the site visit on 8 September 2021.
8
• The vault stage has been negative, indicating no accumulating water (Fig. 30).
• The voltage sensor that monitors the power supply in the vault is functioning properly
(Fig. 31). Power loss to the vault was recorded briefly on 23 July 2021. Power was
restored rapidly and no loss of data occurred.
9
Fig. 4. Daily precipitation (blue) and cumulative percolation (red) for the final cover test
section at White Mesa from 09/29/16 to 09/25/21.
Fig. 5. Battery voltage for the datalogger at the final cover test section at White Mesa
from 06/24/21 to 09/25/21.
0
10
20
30
40
50
0.0
1.0
2.0
3.0
4.0
5.0
9/20/16 7/23/17 5/25/18 3/27/19 1/27/20 11/28/20 9/30/21
Da
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l
y
P
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(
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P
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c
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a
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(
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m
)
White Mesa, UT
Percolation
Precipitation
10
11
12
13
14
6/20/21 7/7/21 7/24/21 8/10/21 8/27/21 9/13/21 9/30/21
Ba
t
t
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r
y
(
V
o
l
t
s
)
\
10
Fig. 6. Daily precipitation at the final cover test section at White Mesa from 06/24/21 to
09/25/21
Fig. 7. Cumulative precipitation at the final cover test section at White Mesa (blue) and
NWS Blanding station (red) from 06/24/21 to 09/25/21.
6/20/21 7/7/21 7/24/21 8/10/21 8/27/21 9/13/21 9/30/21-1
5
10
15
20
Da
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P
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(
m
m
)
0
6/20/21 7/7/21 7/24/21 8/10/21 8/27/21 9/13/21 9/30/210
50
100
150
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(
m
m
)
White Mesa
NWS Blanding
11
Fig. 8. Precipitation from tipper and Geonor precipitation gauge at the final cover test
section at White Mesa from 06/24/21 to 09/25/21.
Fig. 9. Daily air temperature at the final cover test section at White Mesa from 06/24/21
to 09/25/21.
0
5
10
15
20
0 5 10 15 20
White Mesa, UT
Ti
p
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P
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a
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(
m
m
)
Geonor Precipitation (mm)
6/20/21 7/7/21 7/24/21 8/10/21 8/27/21 9/13/21 9/30/21
Min Air Temp
Avg. Air Temp
Max Air Temp
0
10
20
30
40
Da
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A
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T
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(
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.... ·········
........... ····/
• .... •·········/
✓•,///
..... •···/ •.. •·
e/,/ ., ......
... •··
12
Fig. 10. Daily relative humidity at the final cover test section at White Mesa from 06/24/21
to 09/25/21.
Fig. 11. Daily mean wind speed at the final cover test section at White Mesa from
06/24/21 to 09/25/21.
6/20/21 7/7/21 7/24/21 8/10/21 8/27/21 9/13/21 9/30/21
Min RH
Avg. RH
Max RH
0
20
40
60
80
100
120
Da
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R
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H
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(
%
)
0
2
4
6
8
10
6/20/21 7/7/21 7/24/21 8/10/21 8/27/21 9/13/21 9/30/21
Da
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W
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S
p
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d
(
m
/
s
)
13
Fig. 12 Total daily solar radiation at the final cover test section at White Mesa (blue) and
NWS Blanding station (red) from 06/24/21 to 09/25/21.
Fig. 13. Volumetric water content in the growth medium layer (457 mm bgs) of the final
cover test section at White Mesa from 06/24/21 to 09/25/21. Odd numbered
probe is downslope and even is upslope.
0
2000
4000
6000
8000
10000
6/20/21 7/7/21 7/24/21 8/10/21 8/27/21 9/13/21 9/30/21
So
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R
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(
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-
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/
m
2)
White Mesa
Blanding
0.0
0.1
0.2
0.3
0.4
0.5
6/20/21 7/10/21 7/30/21 8/20/21 9/9/21 9/30/21
White Mesa, UT
(457-mm Depth Topsoil Layer)
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Probe 13
Probe 14
14
Fig. 14. Volumetric water content in the growth medium layer (685 mm bgs) of the final
cover test section at White Mesa from 06/24/21 to 09/25/21. Odd numbered
probe is downslope and even is upslope.
Fig.15. Volumetric water content in the growth medium layer (914 mm bgs) of the final
cover test section at White Mesa from 06/24/21 to 09/25/21. Odd numbered
probe is downslope and even is upslope.
0.0
0.1
0.2
0.3
0.4
0.5
6/20/21 7/7/21 7/24/21 8/10/21 8/27/21 9/13/21 9/30/21
White Mesa, UT
(685-mm Depth Growth Medium Layer)
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Probe 11
Probe 12
0.0
0.1
0.2
0.3
0.4
0.5
6/20/21 7/7/21 7/24/21 8/10/21 8/27/21 9/13/21 9/30/21
White Mesa, UT
(914-mm Depth Growth Medium Layer)
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Probe 9
Probe 10
I
15
Fig. 16. Volumetric water content in the compacted layer (1524 mm bgs) of the final cover
test section at White Mesa from 06/24/21 to 09/25/21. Odd numbered probe is
downslope and even is upslope.
Fig. 17. Volumetric water content in the compacted layer (1829 mm bgs) of the final cover
test section at White Mesa from 06/24/21 to 09/25/21. Odd numbered probe is
downslope and even is upslope.
0.0
0.1
0.2
0.3
0.4
0.5
6/20/21 7/7/21 7/24/21 8/10/21 8/27/21 9/13/21 9/30/21
White Mesa, UT
(1524-mm Depth Compacted Layer)
Vo
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W
a
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C
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Probe 8
Probe 7
0.0
0.1
0.2
0.3
0.4
0.5
6/20/21 7/7/21 7/24/21 8/10/21 8/27/21 9/13/21 9/30/21
White Mesa, UT
(1829-mm Depth Compacted Layer)
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Probe 6
Probe 5
/_
... T -
\
16
Fig. 18. Volumetric water content in the compacted layer (2134 mm bgs) of the final cover
test section at White Mesa from 06/24/21 to 09/25/21. Odd numbered probe is
downslope and even is upslope.
Fig. 19. Volumetric water content in the interim layer (2743 mm bgs) of the final cover
test section at White Mesa from 06/24/21 to 09/25/21. Odd numbered probe is
downslope and even is upslope.
0.0
0.1
0.2
0.3
0.4
0.5
6/20/21 7/7/21 7/24/21 8/10/21 8/27/21 9/13/21 9/30/21
White Mesa, UT
(2134-mm Depth Compacted Layer)
Vo
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Probe 4
Probe 3
0.0
0.1
0.2
0.3
0.4
0.5
6/20/21 7/7/21 7/24/21 8/10/21 8/27/21 9/13/21 9/30/21
White Mesa, UT
(2743-mm Depth Interim Layer)
Vo
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Probe 2
Probe 1
17
Fig. 20. Soil temperature in the final cover test section at White Mesa from 06/24/21 to
09/25/21 (sensor depths in mm bgs in legend, D = downslope; U = upslope).
Fig. 21. Cumulative tips from tipper in the runoff basin for the final cover test section at
White Mesa from 06/24/21 to 09/25/21.
0
10
20
30
40
6/20/21 7/7/21 7/24/21 8/10/21 8/27/21 9/13/21 9/30/21
White Mesa, UT 2743 mm D
2743 mm U
2134 mm D
2134 mm U
1829 mm D
1829 mm U
1524 mm D
1524 mm U
914 mm D
914 mm U
685 mm D
685 mm U
457 mm D
457 mm U
So
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l
T
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m
p
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a
t
u
e
(
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2743 mm (D)
457 mm (U)
0
10
20
30
40
50
6/20/21 7/7/21 7/24/21 8/10/21 8/27/21 9/13/21 9/30/21
White Mesa, UT
Cu
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T
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Tipper (1 L)
Calibration
►
18
Fig. 22. Pressure transducer stage in the runoff basin for the final cover test section at
White Mesa from 06/24/21 to 09/25/21.
Fig. 23. Cumulative flow from pressure transducer stage and from the tipper in the runoff
basin for the final cover test section at White Mesa from 06/24/21 to 09/25/21.
0
100
200
300
400
500
6/20/21 7/7/21 7/24/21 8/10/21 8/27/21 9/13/21 9/30/21
White Mesa, UT
Ru
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S
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a
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(
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Calibration
0.0
0.1
0.2
0.3
0.4
0.5
6/20/21 7/7/21 7/24/21 8/10/21 8/27/21 9/13/21 9/30/21
White Mesa, UT
Cu
m
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F
l
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R
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f
f
B
a
s
i
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(
m
m
)
Tipper (1 L)
Pressure Transducer
19
Fig. 24. Cumulative tips from tipper in the lateral flow basin for the final cover test section
at White Mesa from 06/24/21 to 09/25/21.
Fig. 25. Pressure transducer stage in lateral flow basin for the final cover test section at
White Mesa from 06/24/21 to 09/25/21.
0
2
4
6
8
10
6/20/21 7/7/21 7/24/21 8/10/21 8/27/21 9/13/21 9/30/21
White Mesa, UT
Cu
m
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a
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T
i
p
s
f
o
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L
a
t
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r
a
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F
l
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w
Tipper (1 L)
Calibration
0
100
200
300
400
500
6/20/21 7/7/21 7/24/21 8/10/21 8/27/21 9/13/21 9/30/21
White Mesa, UT
Pr
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s
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s
d
u
c
e
r
S
t
a
g
e
f
o
r
L
a
t
e
r
a
l
F
l
o
w
(
m
m
)
Calibration
I I I I I
--
--
--
--
--
I I I I I
20
Fig. 26. Cumulative flow from pressure transducer stage and from tipper in lateral flow
basin for the final cover test section at White Mesa from 06/24/21 to 09/25/21.
Fig. 27. Cumulative tips from the tipper in the drainage basin for the final cover test
section at White Mesa from 06/24/21 to 09/25/21.
0.0
0.1
0.2
0.3
0.4
0.5
6/20/21 7/7/21 7/24/21 8/10/21 8/27/21 9/13/21 9/30/21
White Mesa, UT
Cu
m
u
l
a
t
i
v
e
F
l
o
w
i
n
L
a
t
e
r
a
l
F
l
o
w
B
a
s
i
n
(
m
m
)
Tipper (1 L)Pressure Transducer
0
500
1000
1500
2000
6/20/21 7/7/21 7/24/21 8/10/21 8/27/21 9/13/21 9/30/21
White Mesa, UT
Cu
m
u
l
a
t
i
v
e
T
i
p
s
f
o
r
D
r
a
i
n
a
g
e
Tipper (1 L)
Tipper (70 mL)
\
21
Fig. 28. Pressure transducer stage in drainage basin for the final cover test section at
White Mesa from 06/24/21 to 09/25/21.
Fig. 29. Cumulative flow from pressure transducer stage and from tippers in drainage
basin for the final cover test section at White Mesa from 06/24/21 to 09/25/21.
0
100
200
300
400
500
6/20/21 7/7/21 7/24/21 8/10/21 8/27/21 9/13/21 9/30/21
White Mesa, UTPr
e
s
s
u
r
e
T
r
a
n
s
d
u
c
e
r
S
t
a
g
e
f
o
r
D
r
a
i
n
a
g
e
(
m
m
)
Calibration
0.0
0.1
0.2
0.3
0.4
0.5
6/20/21 7/7/21 7/24/21 8/10/21 8/27/21 9/13/21 9/30/21
White Mesa, UT
Cu
m
u
l
a
t
i
v
e
F
l
o
w
i
n
D
r
a
i
n
a
g
e
B
a
s
i
n
(
m
m
)
Tipper (70 mL)
Pressure Transducer
Tipper (1 L)
I
22
Fig. 30. Vault stage for the final cover test section at White Mesa from 06/24/21 to
09/25/21.
Fig. 31. Vault voltage in the basin for the final cover test section at White Mesa from
06/24/21 to 09/25/21.
-10.0
-7.5
-5.0
-2.5
0.0
6/20/21 7/7/21 7/24/21 8/10/21 8/27/21 9/13/21 9/30/21
White Mesa, UT
Va
u
l
t
S
t
a
g
e
(
m
m
)
100
120
140
160
180
200
6/20/21 7/7/21 7/24/21 8/10/21 8/27/21 9/13/21 9/30/21
White Mesa, UT
Va
u
l
t
V
o
l
t
a
g
e
(
v
o
l
t
)