HomeMy WebLinkAboutDRC-2020-002803 - 0901a06880be203dFebruary 4, 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
Div of Waste Management
and Radiation Control
FEB - 7 2020
Re: Transmittal of Q4-19 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
fourth quarter, of 2019. This report is being provided to.DWMRC for information only, as submittal of this
report is not a requirement of the SCA since the official test section monitoring time period has not yet
started. 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 C. Frydenlund
Terry Slade
Logan Shumway Scott Bakken
Paul Goranson
Energy Fuels Resources (USA) Inc.
225 Union Blvd. Suite 600 Lakewood, CO, US, 80228
303 974 2140 DRC-ZoZo-oo2503 www.energyfuels.com
February 4, 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 .energyfuels.com
Re: Transmittal of Q4-19 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
fourth quarter of 2019. This report is being provided to DWMRC for information only, as submittal of this
report is not a requirement of the SCA since the official test section monitoring time period has not yet
started. 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.
Your very truly, i~Jc,~
ENERGY FUELS RESOURCES (USA) INC.
Kathy Weinel
Quality Assurance Manager
CC: David C. Frydenlund
Terry Slade
Logan Shumway
Scott Bakken
Paul Goranson
Q4-19 DATA QUALITY REPORT FOR THE
PRIMARY TEST SECTION
WHITE MESA MILL – TAILINGS MANAGEMENT
CELL 2
ENERGY FUELS RESOURCES (USA) INC.
SAN JUAN COUNTY, UTAH
25 January 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 fourth
quarter 2019 (Q4-19). 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
all water balance components along with 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 1/3 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 the 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, and 11 September 2019.
2.0 WATER BALANCE DATA
Data in this DQR were collected during Q4-19 from 22 September 2019 to 29 December
2019. These dates align with automated data downloads and do not correspond precisely
to the start and end of Q4-19. Data for 30 December 2019 and onward will be included in
the Q1-20 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. 5-33 show data from each sensor collected during Q4-19. The
quality assurance summary is on pp. 7-8.
Approximately 70 mm of precipitation was received as rain in Q4-19, primarily in late
November and December. Total precipitation in 2019 (308 mm) is the highest annual
precipitation recorded since monitoring began in 2016 (Table 1). The Q4-19 precipitation
was stored in the cover profile, shed as runoff (less than 0.05 mm, Fig. 24), or released
by evapotranspiration (Fig. 3). Water contents increased to a depth of approximately 0.5
m.
2
No lateral flow was recorded (Fig. 28). Percolation tailed through mid-November and then
ceased (Fig. 31).
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. Water contents
reported by these probes will continue to be compared during future quality control
activities.
• Line power to the vault was interrupted for two short periods in October, as confirmed
with plant personnel. No power loss to the datalogger occurred during that period, as
the data acquisition system relies on battery power. Electrical service from the plant is
only used as a backup for the datalogger, and to power the pump within the vault if
water accumulates.
4.0 ACTION ITEMS
• Continue comparing water content Probes 1 and 2 and Probes 3 and 4.
• Request periodic surveillance by site personnel to confirm that line power to the vault
is maintained as evidenced by light emitted by the red light sentry mounted on the
cabinet at the weather station.
3
Fig. 1. Schematic of cover profile evaluated at White Mesa.
4
Fig. 2. Schematic of lysimeter used for the White Mesa Primary Test Section.
5
Table 1. Water balance quantities for the final cover test section at White Mesa from 09/29/16 to
12/29/19.
Calendar
Year
Water Balance Quantities (mm)
Precipitation Runoff Lateral
Flow ET
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
*damage from vault flooding precluded measuring flows from 7 February 2017 – 25 March
2017.
6
0
200
400
600
800
1000
0
1
2
3
4
5
9/1/16 3/22/17 10/11/17 5/2/18 11/21/18 6/12/19 1/1/20
Soil Water
Storage
On-Site
Precip.
On-Site
ET
Surface
Runoff
Percolation
NWS
ET
NWS
Precip.
Lateral Flow
So
i
l
W
a
t
e
r
S
t
o
r
a
g
e
,
C
u
m
u
l
a
t
i
v
e
P
r
e
c
i
p
i
t
a
t
i
o
n
,
an
d
C
u
m
u
l
a
t
i
v
e
E
T
(
m
m
)
Cu
m
u
l
a
t
i
v
e
S
u
r
f
a
c
e
R
u
n
o
f
f
,
L
a
t
e
r
a
l
F
l
o
w
,
an
d
P
e
r
c
o
l
a
t
i
o
n
(
m
m
)
Fig. 3. Water balance quantities for the final cover test section at White Mesa from
09/29/16 to 12/29/19.
7
4
DATA QUALITY REPORT SUMMARY: Q4-19
White Mesa Primary Test Section
09/22/19 through 12/29/19
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 0.2 are reported by Probes 3 and 4 in
the compacted layer at 2134 mm bgs. Differences in water content of approximately
0.1 are reported by Probes 1 and 2 in the interim layer at 2743 mm bgs (Figs 18-19).
These differences in water content are real and reflect spatial variations in water
content that are remnant 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 transducers and tippers for runoff, lateral flow, and percolation
are reasonably consistent (Figs. 21-31). A decreasing trend in pressure transducer
stage was recorded for the runoff and lateral flow basins (Figs.23 and 27), most likely
due to temperature change or evaporation.
8
The vault stage has been negative, ranging from -2.0 to -3.0 mm, indicating no water
accumulation in the vault (Fig. 32). The pump was tested on 11 September 2019 and
functions properly.
The voltage sensor that monitors the power supply in the vault is functioning properly
(Fig. 33). Intermittent loss of line power occurred twice in mid-October. White Mesa
personnel confirmed that there was a problem with the electrical service during that
period. No power loss to the datalogger occurred during that period, as the data
acquisition system relies on battery power. Electrical service from the plant is only
used as a backup for the datalogger, and to power the pump within the vault if water
accumulates.
9
0
10
20
30
40
50
0.0
0.5
1.0
1.5
2.0
2.5
3.0
9/20/16 4/8/17 10/25/17 5/14/18 11/30/18 6/18/19 1/5/20
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
Fig. 4. Daily precipitation (blue) and cumulative percolation (red) for the final cover test
section at White Mesa from 09/29/16 to 12/29/19.
10
11
12
13
14
9/15/19 10/3/19 10/22/19 11/10/19 11/28/19 12/17/19 1/5/20
Ba
t
t
e
r
y
(
V
o
l
t
s
)
Fig. 5. Battery voltage for the datalogger at the final cover test section at White Mesa
from 09/22/19 to 12/29/19.
10
9/15/19 10/3/19 10/22/19 11/10/19 11/28/19 12/17/19 1/5/20
-0.
2
4
6
8
10
Da
i
l
y
P
r
e
c
i
p
i
t
a
t
i
o
n
(
m
m
)
0
Fig. 6. Daily precipitation at the final cover test section at White Mesa from 09/22/19 to
12/29/19
9/15/19 10/4/19 10/22/19 11/10/19 11/29/19 12/17/19 1/5/20
0
20
40
60
80
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
Blanding
Fig. 7. Cumulative precipitation measured at the final cover test section at White Mesa
(blue) and NWS Blanding station (red) from 09/22/19 to 12/29/19.
11
0
2
4
6
8
10
0246810
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)
Fig. 8. Precipitation measured from tipper and Geonor precipitation gauge at the final
cover test section at White Mesa from 09/22/19 to 12/29/19.
9/15/19 10/3/19 10/22/19 11/10/19 11/28/19 12/17/19 1/5/20
Min Air Temp
Avg. Air Temp
Max Air Temp
-20
-10
0
10
20
30
Da
i
l
y
A
i
r
T
e
m
p
e
r
a
t
u
r
e
(
oC)
Fig. 9. Daily air temperature at the final cover test section at White Mesa from 09/22/19
to 12/29/19.
12
9/15/19 10/3/19 10/22/19 11/10/19 11/28/19 12/17/19 1/5/20
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
(
%
)
Fig. 10. Daily relative humidity at the final cover test section at White Mesa from 09/22/19
to 12/29/19.
0
2
4
6
8
10
9/15/19 10/3/19 10/22/19 11/10/19 11/28/19 12/17/19 1/5/20
Da
i
l
y
M
e
a
n
W
i
n
d
S
p
e
e
d
(
m
/
s
)
Fig. 11. Daily mean wind speed at the final cover test section at White Mesa from
09/22/19 to 12/29/19.
13
0
2000
4000
6000
8000
10000
9/15/19 10/3/19 10/22/19 11/10/19 11/28/19 12/17/19 1/5/20
So
l
a
r
R
a
d
i
a
t
i
o
n
(
W
-
h
r
/
m
2
)
White Mesa
Blanding
Fig. 12. Total daily solar radiation at the final cover test section at White Mesa (blue) and
NWS Blanding station (red) from 09/22/19 to 12/29/19.
0.0
0.1
0.2
0.3
0.4
0.5
9/15/19 10/7/19 10/29/19 11/21/19 12/13/19 1/5/20
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
e
n
t
Probe 13
Probe 14
Fig. 13. Volumetric water content in the growth medium layer (457 mm bgs) of the final
cover test section at White Mesa from 09/22/19 to 12/29/19. Odd numbered
probe is downslope and even is upslope.
14
0.0
0.1
0.2
0.3
0.4
0.5
9/15/19 10/3/19 10/22/19 11/10/19 11/28/19 12/17/19 1/5/20
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
Fig. 14. Volumetric water content in the growth medium layer (685 mm bgs) of the final
cover test section at White Mesa from 09/22/19 to 12/29/19. Odd numbered
probe is downslope and even is upslope.
0.0
0.1
0.2
0.3
0.4
0.5
9/15/19 10/3/19 10/22/19 11/10/19 11/28/19 12/17/19 1/5/20
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
e
n
t
Probe 9
Probe 10
Fig.15. Volumetric water content in the growth medium layer (914 mm bgs) of the final
cover test section at White Mesa from 09/22/19 to 12/29/19. Odd numbered
probe is downslope and even is upslope.
15
0.0
0.1
0.2
0.3
0.4
0.5
9/15/19 10/3/19 10/22/19 11/10/19 11/28/19 12/17/19 1/5/20
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
e
n
t
Probe 8
Probe 7
Fig. 16. Volumetric water content in the compacted layer (1524 mm bgs) of the final cover
test section at White Mesa from 09/22/19 to 12/29/19. Odd numbered probe is
downslope and even is upslope.
0.0
0.1
0.2
0.3
0.4
0.5
9/15/19 10/3/19 10/22/19 11/10/19 11/28/19 12/17/19 1/5/20
White Mesa, UT
(1829-mm Depth Compacted Layer)
Vo
l
u
m
e
t
r
i
c
W
a
t
e
r
C
o
n
t
e
n
t
Probe 6
Probe 5
Fig. 17. Volumetric water content in the compacted layer (1829 mm bgs) of the final cover
test section at White Mesa from 09/22/19 to 12/29/19. Odd numbered probe is
downslope and even is upslope.
16
0.0
0.1
0.2
0.3
0.4
0.5
9/15/19 10/3/19 10/22/19 11/10/19 11/28/19 12/17/19 1/5/20
White Mesa, UT
(2134-mm Depth Compacted Layer)
Vo
l
u
m
e
t
r
i
c
W
a
t
e
r
C
o
n
t
e
n
t
Probe 4
Probe 3
Fig. 18. Volumetric water content in the compacted layer (2134 mm bgs) of the final cover
test section at White Mesa from 09/22/19 to 12/29/19. Odd numbered probe is
downslope and even is upslope.
0.0
0.1
0.2
0.3
0.4
0.5
9/15/19 10/3/19 10/22/19 11/10/19 11/28/19 12/17/19 1/5/20
White Mesa, UT
(2743-mm Depth Interim Layer)
Vo
l
u
m
e
t
r
i
c
W
a
t
e
r
C
o
n
t
e
n
t
Probe 2
Probe 1
Fig. 19. Volumetric water content in the interim layer (2743 mm bgs) of the final cover
test section at White Mesa from 09/22/19 to 12/29/19. Odd numbered probe is
downslope and even is upslope.
17
.
0
10
20
30
40
9/15/19 10/3/19 10/22/19 11/10/19 11/28/19 12/17/19 1/5/20
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
i
l
T
e
m
p
e
r
a
t
u
e
(
oC)
2743 mm (D)
457 mm (D)
Fig. 20. Soil temperature in the final cover test section at White Mesa from 09/22/19 to
12/29/19 (sensor depths in mm bgs in legend, D = downslope; U = upslope).
0
2
4
6
8
10
9/15/19 10/3/19 10/22/19 11/10/19 11/28/19 12/17/19 1/5/20
White Mesa, UT
Cu
m
u
l
a
t
i
v
e
T
i
p
s
f
o
r
R
u
n
o
f
f
Tipper (1 L)
Fig. 21. Cumulative tips from tipper in the runoff basin for the final cover test section at
White Mesa from 09/22/19 to 12/29/19.
18
0
100
200
300
400
500
9/15/19 10/3/19 10/22/19 11/10/19 11/28/19 12/17/19 1/5/20
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
)
Fig. 22. Pressure transducer stage in the runoff basin for the final cover test section at
White Mesa from 09/22/19 to 12/29/19.
90
95
100
105
110
9/15/19 10/3/19 10/22/19 11/10/19 11/28/19 12/17/19 1/5/20
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
)
Fig. 23. Pressure transducer stage in the runoff basin for the final cover test section at
White Mesa from 09/22/19 to 12/29/19.
19
0.0
0.1
0.2
0.3
0.4
0.5
9/15/19 10/3/19 10/22/19 11/10/19 11/28/19 12/17/19 1/5/20
White Mesa, UT
Cu
m
u
l
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
Fig. 24. Cumulative flow from pressure transducer stage and from the tipper in the runoff
basin for the final cover test section at White Mesa from 09/22/19 to 12/29/19.
0
1
2
3
4
5
9/15/19 10/3/19 10/22/19 11/10/19 11/28/19 12/17/19 1/5/20
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)
Fig. 25. Cumulative tips from tipper in the lateral flow basin for the final cover test section
at White Mesa from 09/22/19 to 12/29/19.
20
0
100
200
300
400
500
9/15/19 10/3/19 10/22/19 11/10/19 11/28/19 12/17/19 1/5/20
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
)
Fig. 26. Pressure transducer stage in lateral flow basin for the final cover test section at
White Mesa from 09/22/19 to 12/29/19.
45
46
47
48
49
50
9/15/19 10/3/19 10/22/19 11/10/19 11/28/19 12/17/19 1/5/20
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
)
Fig. 27. Pressure transducer stage in lateral flow basin for the final cover test section at
White Mesa from 09/22/19 to 12/29/19.
21
0.0
0.1
0.2
0.3
0.4
0.5
9/15/19 10/3/19 10/22/19 11/10/19 11/28/19 12/17/19 1/5/20
White Mesa, UT
Cu
m
u
l
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
Fig. 28. Cumulative flow from pressure transducer stage and from tipper in lateral flow
basin for the final cover test section at White Mesa from 09/22/19 to 12/29/19.
0
200
400
600
800
1000
9/15/19 10/3/19 10/22/19 11/10/19 11/28/19 12/17/19 1/5/20
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)
Fig. 29. Cumulative tips from the tipper in the drainage basin for the final cover test
section at White Mesa from 09/22/19 to 12/29/19.
22
0
200
400
600
9/15/19 10/3/19 10/22/19 11/10/19 11/28/19 12/17/19 1/5/20
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
)
Fig. 30. Pressure transducer stage in drainage basin for the final cover test section at
White Mesa from 09/22/19 to 12/29/19.
0.0
0.2
0.4
0.6
0.8
1.0
9/15/19 10/3/19 10/22/19 11/10/19 11/28/19 12/17/19 1/5/20
White Mesa, UT
Cu
m
u
l
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)
Fig. 31. Cumulative flow from pressure transducer stage and from tippers in drainage
basin for the final cover test section at White Mesa from 09/22/19 to 12/29/19.
23
-4.0
-3.0
-2.0
-1.0
0.0
9/15/19 10/3/19 10/22/19 11/10/19 11/28/19 12/17/19 1/5/20
White Mesa, UT
Va
u
l
t
S
t
a
g
e
(
m
m
)
Fig. 32. Vault stage in the basin for the final cover test section at White Mesa from
09/22/19 to 12/29/19.
100
120
140
160
180
200
9/15/19 10/3/19 10/22/19 11/10/19 11/28/19 12/17/19 1/5/20
White Mesa, UT
Va
u
l
t
V
o
l
t
a
g
e
(
v
o
l
t
)
Fig. 33. Vault voltage in the basin for the final cover test section at White Mesa from
09/22/19 to 12/29/19.