HomeMy WebLinkAboutDRC-2020-015490 - 0901a06880d2a10aENERGY FUELS
Div of Waste Management
and Radiation Control
AUG 2 6 2020
T42C-2020-015490
Energy Fuels Resources (USA) Inc.
225 Union Blvd. Suite 600
Lakewood, CO, US, 80228
303 974 2140
www.encrgyfueis.com
August 24, 2020
Sent VIA E-MAIL AND EXPRESS DELIVERY
Mr. Ty L. Howard
Director
Division of Waste Management and Radiation Control
Utah Department of Environmental Quality
195 North 1950 West
P.O. Box 144880
Salt Lake City, UT 84114-4880
Re: Transmittal of Q2-20 Data Quality Report ("DQR") for the White Mesa Cell 2 Cover Test
Section Monitoring
Dear Mr. Howard:
In accordance with the Stipulation and Consent Agreement ("SCA" dated February 23, 2017) between the
Division of Waste Managernent and Radiation Control ("DWMRC") and Energy Fuels Resource (USA) Inc.
("EFR1"), 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
second quarter of 2020. 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 very trpty,
71<-ea:
ENERGY FUELS RESOURCES (USA) INC.
Kathy Weinel
Quality Assurance Manager
CC: David Frydenlund
Terry Slade
Garrin Palmer
Logan Shumway
Scott Balcken
August24,2020
Sent VIA E-MAIL AND EXPRESS DELIVERY
Mr. Ty L. Howard
Director
Division of Waste Management and Radiation Control
Utah Department of Environmental Quality
195 North 1950 West
P.O. Box 144880
Salt Lake City, UT 84114-4880
Energy Fuels Resources (USA) Inc.
225 Union Blvd. Suite 600
Lakewood, CO, US, 80228
303 974 2140
www.energyf'uels.com
Re: Transmittal of Q2-20 Data Quality Report ("DQR") for the White Mesa Cell 2 Cover Test
Section Monitoring
Dear Mr. Howard:
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
second quarter of 2020. 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.
ENERGY FUELS RESOURCES (USA) INC.
Kathy Weinel
Quality Assurance Manager
CC: David Frydenlund
Terry Slade
Garrin Palmer
Logan Shumway
Scott Balcken
Q2-20 DATA QUALITY REPORT FOR THE
PRIMARY TEST SECTION
WHITE MESA MILL – TAILINGS MANAGEMENT
CELL 2
ENERGY FUELS RESOURCES (USA) INC.
SAN JUAN COUNTY, UTAH
19 August 2020
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 second
quarter 2020 (Q2-20). 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
calibrated initially in September 2016, and re-calibrated on 10 May 2017, 14 November
2017, 27 June 2018, 11 September 2019, and 14 July 2020.
2.0 WATER BALANCE DATA
Data in this DQR were collected during Q2-20 from 24 March 2020 to 24 June 2020. These
dates align with automated data downloads and do not correspond precisely to the start
and end of Q2-20. Data for 25 June 2020 and onward will be included in the Q3-20 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 Q2-20. The
quality assurance summary is on pp. 7-8.
Approximately 19 mm of precipitation was recorded in Q2-20, nearly all of which occurred
during a large storm in early June. No runoff or lateral flow occurred (Figs. 21-26).
Precipitation was stored in the cover profile and released by evapotranspiration (Fig. 3).
Water contents within the upper 0.5 m varied modestly in response to the large event in
June. Water contents remained nearly constant at greater depths (Figs. 13-19).
Percolation initiated at the very end of June, most likely due to thermal gradients as in past
years (Figs. 27).
2
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 and are
diminishing slowly. Comparison of water contents reported by these probes will
continue during future quality control activities.
4.0 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
= 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
06/24/20.
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 307.9 0.28 0.00 324.8 3.3 1.01
2020 64.9 0.02 0.00 95.7 -40.3 0.00
*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 06/24/20.
0
200
400
600
800
1000
0
1
2
3
4
5
9/20/16 5/7/17 12/23/17 8/10/18 3/28/19 11/13/19 6/30/20
Soil Water
Storage
On-Site ET
Surface
Runoff
Percolation
NWS
Precipitation
Lateral Flow
So
i
l
W
a
t
e
r
S
t
o
r
a
g
e
,
C
u
m
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l
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a
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,
an
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m
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a
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E
v
a
p
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t
r
a
n
s
p
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r
a
t
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(
m
m
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a
t
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R
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f
f
,
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a
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,
a
n
d
P
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o
l
a
t
i
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(
m
m
)
On-Site
Precipitation
White Mesa, UT
7
DATA QUALITY REPORT SUMMARY: Q2-20
White Mesa Primary Test Section
03/24/20 through 06/24/20
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 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
also 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.
These differences are diminishing slowly. A “NAN” (not a number) reading was
recorded on 04/29/20 for all WCR probes (Figs. 13-19).
• The thermocouples used to measure soil temperature are functioning properly. A “NAN”
reading was recorded on 04/29/20 for all soil temperature probes (Fig. 20).
• Flows reported by the transducer and tippers for runoff, lateral flow, and percolation
are reasonably consistent (Figs. 21-29). A slight decreasing trend in stage in the runoff
8
basin was recorded by the pressure transducer (approximately 0.05 mm/month) (Fig. 22).
This trend is likely due to thermal effects or evaporation.
• 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). Intermittent power losses occurred in April, May, and June. Site personnel
confirmed these losses were concurrent with brief power outages on site.
9
Fig. 4. Daily precipitation (blue) and cumulative percolation (red) for the final cover test
section at White Mesa from 09/29/16 to 06/24/20.
Fig. 5. Battery voltage for the datalogger at the final cover test section at White Mesa
from 03/24/20 to 06/24/20.
0
10
20
30
40
50
0.0
0.5
1.0
1.5
2.0
2.5
3.0
9/20/16 5/7/17 12/23/17 8/10/18 3/28/19 11/13/19 6/30/20
Da
i
l
y
P
r
e
c
i
p
i
t
a
t
i
o
n
(
m
m
)
Cu
m
u
l
a
t
i
v
e
P
e
r
c
o
l
a
t
i
o
n
(
m
m
)
White Mesa, UT
Percolation
Precipitation
10
11
12
13
14
3/20/20 4/6/20 4/23/20 5/10/20 5/27/20 6/13/20 6/30/20
Ba
t
t
e
r
y
(
V
o
l
t
s
)
10
Fig. 6. Daily precipitation at the final cover test section at White Mesa from 03/24/20 to
06/24/20
Fig. 7. Cumulative precipitation at the final cover test section at White Mesa (blue) and
NWS Blanding station (red) from 03/24/20 to 06/24/20.
3/20/20 4/6/20 4/23/20 5/10/20 5/27/20 6/13/20 6/30/20-1
5
10
15
20
Da
i
l
y
P
r
e
c
i
p
i
t
a
t
i
o
n
(
m
m
)
0
3/20/20 4/6/20 4/23/20 5/10/20 5/27/20 6/13/20 6/30/200
5
10
15
20
25
Cu
m
u
l
a
t
i
v
e
P
r
e
c
i
p
i
t
a
t
i
o
n
(
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 12/29/19 to 06/24/20.
Fig. 9. Daily air temperature at the final cover test section at White Mesa from 03/24/20
to 06/24/20.
0
5
10
15
20
0 5 10 15 20
White Mesa, UT
Ti
p
p
e
r
P
r
e
c
i
p
i
t
a
t
i
o
n
(
m
m
)
Geonor Precipitation (mm)
3/20/20 4/6/20 4/23/20 5/10/20 5/27/20 6/13/20 6/30/20
Min Air Temp
Avg. Air Temp
Max Air Temp
-10
0
10
20
30
40
Da
i
l
y
A
i
r
T
e
m
p
e
r
a
t
u
r
e
(
oC)
.... ···················/
... ··
,. //
.... ···/ .
·· ·· -.. , ., .. , . ., .. , ·· . ., . ., . ., .. , . ., .. , . ., .. , .. , . ., .. , . ., .. , . ., .. , . ., .. , . ., .. ,,_____I ______.1 -
12
Fig. 10. Daily relative humidity at the final cover test section at White Mesa from 03/24/20
to 06/24/20.
Fig. 11. Daily mean wind speed at the final cover test section at White Mesa from
03/24/20 to 06/24/20.
3/20/20 4/6/20 4/23/20 5/10/20 5/27/20 6/13/20 6/30/20
Min RH
Avg. RH
Max RH
0
20
40
60
80
100
120
Da
i
l
y
R
e
l
a
t
i
v
e
H
u
m
i
d
i
t
y
(
%
)
0
2
4
6
8
10
3/20/20 4/6/20 4/23/20 5/10/20 5/27/20 6/13/20 6/30/20
Da
i
l
y
M
e
a
n
W
i
n
d
S
p
e
e
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 03/24/20 to 06/24/20.
Fig. 13. Volumetric water content in the growth medium layer (457 mm bgs) of the final
cover test section at White Mesa from 03/24/20 to 06/24/20. Odd numbered
probe is downslope and even is upslope.
0
2000
4000
6000
8000
10000
3/20/20 4/6/20 4/23/20 5/10/20 5/27/20 6/13/20 6/30/20
So
l
a
r
R
a
d
i
a
t
i
o
n
(
W
-
h
r
/
m
2
)
White Mesa
Blanding
0.0
0.1
0.2
0.3
0.4
0.5
3/20/20 4/9/20 4/29/20 5/20/20 6/9/20 6/30/20
White Mesa, UT
(457-mm Depth Topsoil Layer)
Vo
l
u
m
e
t
r
i
c
W
a
t
e
r
C
o
n
t
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n
t
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 03/24/20 to 06/24/20. 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 03/24/20 to 06/24/20. Odd numbered
probe is downslope and even is upslope.
0.0
0.1
0.2
0.3
0.4
0.5
3/20/20 4/6/20 4/23/20 5/10/20 5/27/20 6/13/20 6/30/20
White Mesa, UT
(685-mm Depth Growth Medium Layer)
Vo
l
u
m
e
t
r
i
c
W
a
t
e
r
C
o
n
t
e
n
t
Probe 11
Probe 12
0.0
0.1
0.2
0.3
0.4
0.5
3/20/20 4/6/20 4/23/20 5/10/20 5/27/20 6/13/20 6/30/20
White Mesa, UT
(914-mm Depth Growth Medium Layer)
Vo
l
u
m
e
t
r
i
c
W
a
t
e
r
C
o
n
t
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Probe 9
Probe 10
15
Fig. 16. Volumetric water content in the compacted layer (1524 mm bgs) of the final cover
test section at White Mesa from 03/24/20 to 06/24/20. 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 03/24/20 to 06/24/20. Odd numbered probe is
downslope and even is upslope.
0.0
0.1
0.2
0.3
0.4
0.5
3/20/20 4/6/20 4/23/20 5/10/20 5/27/20 6/13/20 6/30/20
White Mesa, UT
(1524-mm Depth Compacted Layer)
Vo
l
u
m
e
t
r
i
c
W
a
t
e
r
C
o
n
t
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n
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Probe 8
Probe 7
0.0
0.1
0.2
0.3
0.4
0.5
3/20/20 4/6/20 4/23/20 5/10/20 5/27/20 6/13/20 6/30/20
White Mesa, UT
(1829-mm Depth Compacted Layer)
Vo
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m
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t
r
i
c
W
a
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C
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Probe 6
Probe 5
\
16
Fig. 18. Volumetric water content in the compacted layer (2134 mm bgs) of the final cover
test section at White Mesa from 03/24/20 to 06/24/20. 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 03/24/20 to 06/24/20. Odd numbered probe is
downslope and even is upslope.
0.0
0.1
0.2
0.3
0.4
0.5
3/20/20 4/6/20 4/23/20 5/10/20 5/27/20 6/13/20 6/30/20
White Mesa, UT
(2134-mm Depth Compacted Layer)
Vo
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W
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C
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Probe 4
Probe 3
0.0
0.1
0.2
0.3
0.4
0.5
3/20/20 4/6/20 4/23/20 5/10/20 5/27/20 6/13/20 6/30/20
White Mesa, UT
(2743-mm Depth Interim Layer)
Vo
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Probe 2
Probe 1
17
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0 10 20 30 40
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27
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2
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18
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45
7
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45
7
m
m
U
Soil Temperatue (oC)
27
4
3
m
m
(
D
)
45
7
m
m
(
U
)
0 2 4 6 8 10
3/
2
0
/
2
0
4/
6
/
2
0
4/
2
3
/
2
0
5
/
1
0
/
2
0
5
/
2
7
/
2
0
6
/
1
3
/
2
0
6
/
3
0
/
2
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Wh
i
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a
,
U
T
Cumulative Tips for Runoff
Ti
p
p
e
r
(
1
L
)
I I I I I I I I I I I I I I
18
Fig. 22. Pressure transducer stage in the runoff basin for the final cover test section at
White Mesa from 03/24/20 to 06/24/20.
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 03/24/20 to 06/24/20.
90
95
100
105
110
115
120
3/20/20 4/6/20 4/23/20 5/10/20 5/27/20 6/13/20 6/30/20
White Mesa, UT
Ru
n
o
f
f
B
a
s
i
n
S
t
a
g
e
f
o
r
R
u
n
o
f
f
(
m
m
)
0.0
0.1
0.2
0.3
0.4
0.5
3/20/20 4/6/20 4/23/20 5/10/20 5/27/20 6/13/20 6/30/20
White Mesa, UT
Cu
m
u
l
a
t
i
v
e
F
l
o
w
i
n
R
u
n
o
f
f
B
a
s
i
n
(
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 03/24/20 to 06/24/20.
Fig. 25. Pressure transducer stage in lateral flow basin for the final cover test section at
White Mesa from 03/24/20 to 06/24/20.
0
1
2
3
4
5
3/20/20 4/6/20 4/23/20 5/10/20 5/27/20 6/13/20 6/30/20
White Mesa, UT
Cu
m
u
l
a
t
i
v
e
T
i
p
s
f
o
r
L
a
t
e
r
a
l
F
l
o
w
Tipper (1 L)
40
42
44
46
48
50
3/20/20 4/6/20 4/23/20 5/10/20 5/27/20 6/13/20 6/30/20
White Mesa, UT
Pr
e
s
s
u
r
e
T
r
a
n
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
)
........... l 4 e+=ewtt -
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 03/24/20 to 06/24/20.
Fig. 27. Cumulative tips from the tipper in the drainage basin for the final cover test
section at White Mesa from 03/24/20 to 06/24/20.
0.0
0.1
0.2
0.3
0.4
0.5
3/20/20 4/6/20 4/23/20 5/10/20 5/27/20 6/13/20 6/30/20
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
1
2
3
4
5
6
3/20/20 4/6/20 4/23/20 5/10/20 5/27/20 6/13/20 6/30/20
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)
I I I I I
--
--
--
--
--
21
Fig. 28. Pressure transducer stage in drainage basin for the final cover test section at
White Mesa from 03/24/20 to 06/24/20.
Fig. 29. Cumulative flow from pressure transducer stage and from tippers in drainage
basin for the final cover test section at White Mesa from 03/24/20 to 06/24/20.
0
200
400
600
3/20/20 4/6/20 4/23/20 5/10/20 5/27/20 6/13/20 6/30/20
White Mesa, UT
Pr
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
)
0.0
0.1
0.2
0.3
0.4
0.5
3/20/20 4/6/20 4/23/20 5/10/20 5/27/20 6/13/20 6/30/20
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 (1L)
22
Fig. 30. Vault stage in the basin for the final cover test section at White Mesa from
03/24/20 to 06/24/20.
Fig. 31. Vault voltage in the basin for the final cover test section at White Mesa from
03/24/20 to 06/24/20.
-5.0
-4.0
-3.0
-2.0
-1.0
0.0
3/20/20 4/6/20 4/23/20 5/10/20 5/27/20 6/13/20 6/30/20
White Mesa, UT
Va
u
l
t
S
t
a
g
e
(
m
m
)
100
120
140
160
180
200
3/20/20 4/6/20 4/23/20 5/10/20 5/27/20 6/13/20 6/30/20
White Mesa, UT
Va
u
l
t
V
o
l
t
a
g
e
(
v
o
l
t
)
I I I I I
... -
... -
... -
--. "' r
I I I I I