DSHW-2024-005250

DEPARTMENT OF THE ARMY
TOOELE ARMY DEPOT/HEADQUARTERS
1 TOOELE ARMY DEPOT, BUILDING 1
TOOELE, UT 84074-5003
*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 gathered and evaluated 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 fines and imprisonment for knowing violations.
March 13, 2024

SUBJECT: Draft Final Dry/Obstructed Well Abandonment Report, Tooele Army Depot
North Area (TEAD-N), State/EPA I.D. Number UT3213820894.

Mr. Doug Hansen
Director, Division Waste Management and Radiation Control
195 North 1950 West
Salt Lake City, UT 84114-4880

Dear Mr. Hansen:

TEAD is submitting the Draft Final Dry/Obstructed Well Abandonment Report. This
report describes well abandonment activities that were conducted for 25 dry or
obstructed monitoring wells at Tooele Army Depot North (TEAD-N) Solid Waste
Management Unit 58 (SWMU 58).

If you have any questions regarding this request, please contact Tyson Erickson at
[phone].

Sincerely,

Lonnie Brown
Chief, Environmental Division *CERTIFICATION STATEMENT

DRAFT FINAL
Dry/Obstructed Well Abandonment Report
Tooele Army Depot North

March 2024
Environmental Remediation
Tooele Army Depot, Utah
Contract No. W9124J-21-D-0006

U.S. Army Environmental Command Tooele Army Depot

DRAFT FINAL
Dry/Obstructed Well Abandonment Report
Tooele Army Depot North

March 2024
Environmental Remediation
Tooele Army Depot, Utah
Contract No. W9124J-21-D-0006

Prepared For:

U.S. Army Mission and Installation Contracting Command Fort Sam Houston (MICC – FSH),
U.S. Army Environmental Command (USAEC), and Tooele Army Depot (TEAD)

Prepared By:

Brice Engineering, LLC
362 Pierpont Avenue
Salt Lake City, Utah 84101
801-948-9319 PH
www.BriceEng.com

This page intentionally blank

Dry/Obstructed Well Abandonment Report i
Environmental Remediation Tooele Army Depot North, Utah
TABLE OF CONTENTS
ACRONYMS AND ABBREVIATIONS ...................................................................................................... III
1.0 INTRODUCTION AND BACKGROUND ........................................................................................ 1
2.0 PRE-MOBILIZATION ................................................................................................................. 1
3.0 WELL ABANDONMENT PROCEDURES ....................................................................................... 1
4.0 POST-ABANDONMENT ............................................................................................................. 2
5.0 REFERENCES ............................................................................................................................ 2
TABLES
Table 1 Monitoring Well Abandonment Data
FIGURES
Figure 1 Monitoring Well Abandonment
APPENDICES
Appendix A Photograph Log
Appendix B Well Abandonment Report

Dry/Obstructed Well Abandonment Report ii
Environmental Remediation Tooele Army Depot North, Utah

This page intentionally blank

Dry/Obstructed Well Abandonment Report iii
Environmental Remediation Tooele Army Depot North, Utah
ACRONYMS AND ABBREVIATIONS
Brice Brice Engineering, LLC
btoc below top of casing
DWMRC Division of Waste Management and Radiation Control
SWMU Solid Waste Management Unit
TEAD-N Tooele Army Depot North
UAC Utah Administrative Code

Dry/Obstructed Well Abandonment Report iv
Environmental Remediation Tooele Army Depot North, Utah

This page intentionally blank

Dry/Obstructed Well Abandonment Report 1
Environmental Remediation Tooele Army Depot North, Utah
1.0 INTRODUCTION AND BACKGROUND
This report describes well abandonment activities that were conducted for 25 dry or obstructed
monitoring wells at Tooele Army Depot North (TEAD-N) Solid Waste Management Unit 58 (SWMU 58).
Table 1 presents information for each abandoned well including the location, known status of the well,
well depth, screen interval, date of construction, construction materials, and type of surface completion.
Figure 1 presents the locations of the abandoned wells.
In a letter dated 13 December 2022, TEAD-N submitted a request to the Division of Waste Management
and Radiation Control (DWMRC) to abandon 25 monitoring wells that were either obstructed or dry and
no longer functional. The DWMRC granted the request in a letter dated 12 January 2023, with the
requirement that a well abandonment work plan be submitted to and approved by the DWMRC (DWMRC
2023). The Dry/Obstructed Well Abandonment Work Plan (Brice Engineering, LLC [Brice] 2023) was
submitted to the DWMRC on 11 September 2023 and approved on 6 October 2023.
2.0 PRE-MOBILIZATION
Brice subcontracted Conetec, a Utah-licensed driller, to conduct the well abandonment. Prior to
commencing well abandonment work, Conetec notified the state engineer of the proposed abandonment
work in accordance with Utah Administrative Code (UAC) Subsections R655-4-4.2.6 and R655-4-14.2.1.
3.0 WELL ABANDONMENT PROCEDURES
Monitoring wells were abandoned between 8 November 2023 and 12 January 2024. Well abandonment
activities were performed in accordance with Subsection R655-4-14.3.1 of the UAC; all work was overseen
by a Brice Geologist.
Each well proposed for abandonment was pressure grouted, above ground completions were removed,
and the well casing cut off 1 foot below ground surface. At locations where only one of a nested well pair
(shallow and deep wells in same borehole and surface completion) was being abandoned, the abandoned
well was pressure grouted and remains in place within the surface completion. Prior to grouting each well,
a water level indicator was lowered to the bottom of the well to locate any obstructions and any downhole
materials encountered, were removed. In wells with obstructions that could not be removed the driller
attempted to clear the blockage with the tremie pipe. Table 1 presents well information including
obstruction and total depths.
Portland cement grout was mixed with potable water per manufacturer’s instructions and placed from
the bottom of the well progressively upward using a tremie line and grout pump. During abandonment of
monitoring wells, A-03 and P-04S, a large amount of grout was added with minimal upward filling of the
well casing. The surrounding formation past the sand filter pack caused the grout to move horizontally
instead of filling the vertical casing. When enough grout was in place to fill the well screen interval it was
left to cure overnight. Once the grout was set, additional grout was added up to the natural ground
surface. At all other monitoring wells grout was able to be emplaced in a single batch. Table 1 presents
the approximate volume of grout required to abandon each well.

Dry/Obstructed Well Abandonment Report 2
Environmental Remediation Tooele Army Depot North, Utah
After grouting, the surface completions were demolished, which included the removal of the concrete
pad, protective metal casing, and bollards. Demolition activities were conducted using a backhoe and
acetylene torch, which was used to cut the metal casing. Prior to use of the torch, a Match, Flame, and
Heat Producing Equipment Permit was obtained from TEAD-N. Following demolition, the area was
regraded to match surrounding conditions using native soil. Appendix A presents a photograph log of well
abandonment activities.
Solid waste generated during well abandonment was disposed of in the municipal waste stream by the
drilling contractor.
4.0 POST-ABANDONMENT
In February 2024, Conetec filed the abandonment log with the State Engineer at Utah Division of Water
Rights (Appendix B).
5.0 REFERENCES
Brice Engineering, LLC (Brice). Final Dry/Obstructed Well Abandonment Work Plan. Environmental
Remediation, Tooele Army Depot, Utah and Defense Depot Ogden, Utah.
Division of Waste Management and Radiation Control (DWMRC). 2023. RE: Approval of Request to
Abandon and Reconfigure Monitoring Wells. Letter dated 12 January 2023, from Douglas
Hanson, Director, DWMRC, to Kristyl Bentley, Chief, Environmental Management Division,
Tooele Army Depot.
Tooele Army Depot North (TEAD-N). 2022. Request to Abandon and Reconfigure Monitoring Wells.
Letter dated 13 December 2022, from Kristyl Bentley, Chief, Environmental Management
Division, Tooele Army Depot, to Doug Hansen, Director, DWMRC.

TABLES

This page intentionally blank

Well ID Well Status
(feet btoc)
Date of Well 
Installation
Well Depth 
at Completion
(feet btoc)
Well Diameter 
(inches)Nested Well Pair Measured Total Depth  
(feet btoc)
Approximate 
Volume of Grout Placed
(gallons)
Volume of Grout to Fill 
Well Depth at Completion 
to Surface 
(gallons)
A‐03 Dry 12/13/1985 239.55 5 No 222 ‐232 240.00 370 244
B‐12 Dry 7/22/1986 275.00 5 No 256 ‐266 270.50 365 280
B‐30 Dry 6/30/1987 244.10 5 No 225 ‐235 244.00 300 249
N‐119‐88 Dry 2/1/1988 275.65 4 No 266 ‐275 278.10 245 180
P‐01S Obstruction ‐ 28 4/18/1986 210.00 2 No 200 ‐210 28.30 10 34
P‐04S Dry 
(Possibly Obstructed)4/15/1986 235.00 2 Yes 220 ‐230 223.00 125 38
P‐05S Dry 4/12/1986 278.00 2 Yes 264 ‐274 278.15 90 45
P‐08S Dry 5/5/1986 87.35 2 Yes 72 ‐82 87.30 145 14
P‐09D Obstruction ‐ 31 4/30/1986 428.00 2 Yes 414 ‐424 31.00 110 70
P‐09S Obstruction ‐ 170 4/20/1986 305.00 2 Yes 289 ‐299 168.90 35 50
P‐12S Dry 5/5/1986 246.80 2 No 230 ‐240 245.90 55 40
P‐13S Dry 4/10/1986 288.62 2 Yes 280 ‐290 288.50 60 47
P‐14S Dry 
(Possibly Obstructed)5/12/1986 272.00 2 Yes 262 ‐272 261.80 65 44
P‐15S Dry 
(Possibly Obstructed)5/21/1986 240.00 2 Yes 224 ‐234 228.50 95 39
P‐17S Dry 4/20/1986 230.00 2 Yes 218 ‐228 230.15 85 38
P‐18D Obstruction ‐ 203 5/19/1986 391.00 2 Yes 376 ‐386 202.50 40 64
P‐18S Obstruction ‐ 194 5/19/1986 312.00 2 Yes 300 ‐310 194.20 40 51
P‐20S Dry 
(Possibly Obstructed)5/18/1986 195.00 2 Yes 180 ‐190 183.25 135 32
P‐21S Dry 
(Possibly Obstructed)5/13/1986 248.00 2 Yes 238 ‐248 242.10 134 40
P‐23S Obstruction ‐ 26 5/24/1986 332.00 2 Yes 320 ‐330 26.40 3 54
P‐24D Obstruction ‐ 22 5/24/1986 480.00 2 Yes 460 ‐470 21.65 3 78
P‐24S Obstruction ‐ 27 5/24/1986 245.00 2 Yes 233 ‐243 27.10 66 40
P‐28S Obstruction ‐ 148 10/5/1986 188.00 2 Yes 170 ‐180 147.44 65 31
P‐30 Obstruction ‐ 70 9/26/1986 240.00 2 No 230 ‐235 69.50 15 39
P‐31 Obstruction ‐ 108 10/9/1986 240.00 2 No 225 ‐235 108.50 25 39
Table 1  Monitoring Well Abandonment Data
Screen Interval
(feet btoc)
Notes:
For definitions, refer to the Acronyms and Abbreviations section.
Page 1 of 1
This page intentionally blank

FIGURES

This page intentionally blank

Service Layer Credits: Source: Esri, Maxar, Earthstar
Geographics, and the GIS User Community
Copyright:© 2013 National Geographic Society, i-cubed
@A
@A
@A
@A
@A
@A@A@A
@A
@A
@A
@A
@A
@A@A@A
@A
@A@A@A
@A
@A
@A
@A
@A
@A
@A@A
@A
@A @A
@A
@A
@A@A
@A@A@A
@A
@A
@A
@A @A
@A
@A
@A
@A
@A @A
@A
@A
@A
@A
@A
@A
@A
@A
@A
@A
@A
@A
@A
@A
@A
@A
@A
@A
@A@A
@A@A
@A
@A
@A
@A
@A
@A
@A
@A
@A @A
@A
@A
@A
@A
@A
@A
@A@A
@A
@A
@A
@A
@A
@A
@A
@A
@A
@A
@A
@A
@A
@A@A
@A
@A
@A
@A
@A
@A@A
@A @A
@A
@A
@A
@A
@A
@A@A
@A@A
@A@A @A@A @A@A
@A@A
@A@A
@A@A
@A@A
@A@A
@A@A
@A@A
@A@A
@A@A
@A@A
@A@A@A@A
@A@A
@A@A
@A@A
@A@A@A@A@A@A@A@A
@A@A
@A@A
@A@A
@A@A
@A
@A@A
@A
@A @A
@A
@A
@A
@A
@A
@A@A
@A@A
@A
@A
@A
@A
@A
@A
@A
@A
@A
@A
@A
@A
@A
@A
@A
@A
@A
@A
@A
@A
@A@A@A
@A @A@A@A@A@A@A
@A @A
@A
@A
@A
@A
@A
@A
@A
@A
@A
@A
@A
@A
@A
@A
@A
@A
@A
@A
@A
@A
@A
@A
@A
@A
@A
@A
@A@A@A
@A @A@A@A@A@A@A
@A @A
@A
@A
@A
@A
@A
@A
@A
@A
@A
@A
@A
@A
@A
@A
@A
@A
@A
@A
@A
@A
@
@
@
@@
@
@
@
@
@
@
@
@
@
@
@
@@@
@
@
@
@
@
@
@
@
@
@
@
@
@
@
@
@
@
@
@
@
@
@
@
@
@
@@
@
@
@
@
@
@
@
@@
@@
@
@
@
@@
@
@
@@@
@ @@@@@@
@ @
@
@
@
@
@
@
@
@
@
@
@
@
@
@
@
@
@
@
@
@
@
@
@
@
@
@ @
@ @
@ @
@
@
@
@
@
@
A
A
A
AA
A
A
A
A
A
A
A
A
A
A
A
AAA
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
AA
A
A
A
A
A
A
A
AA
AA
A
A
A
AA
A
A
AAA
A AAAAAA
A A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A A
A A
A A
A
A
A
A
A
A
©
©©
©
©
©©
©
©©
©
©
©
©
©
©©
©
©©©
©
©©
P-24D
P-28S
P-31
N-119-88
A-03
B-12B-30
P-01S
P-04S
P-05S
P-08S
P-09DP-09S
P-12S
P-13S
P-14S
P-15S
P-17S
P-18D
P-18S
P-20S
P-21S
P-23S
P-24S
P-30
1 INCH
3,500 0 3,500 7,0001,750
SCALE IN FEET
1
A.C
DRAWN:P.M.:
PROJECT No.:FIGURE:DATE:
Legend
SWMU 58 Monitoring Wells Abandonment
©Groundwater Elevation Only
©Compliance Monitoring Well (Annual)
©Compliance Monitoring Well (Semi-Annual)
SWMU 58 Monitoring Wells
@A Groundwater Elevation Only
@A Compliance Monitoring Well (Annual)
@A Compliance Monitoring Well (Semi-Annual)
2021 Shallow TCE Plume Boundary (5 μg/L)
Inferred Fault Zone
Tooele Army Depot North
BRAC Parcel
Former Sanitary Landfill
770108 2/9/2024
CMH
Do
c
u
m
e
n
t

P
a
t
h
:

G
:
\
_
P
R
O
J
E
C
T
S
\
B
E
N
G
\
A
R
M
Y
\
T
E
A
D
\
_
G
I
S
\
1
_
M
X
D
\
T
E
A
D
_
N
_
W
e
l
l
_
A
b
a
n
d
o
n
m
e
n
t
\
F
1
_
W
e
l
l
L
o
c
a
t
i
o
n
s
.
m
x
d
p
SWMU-58
FIGURE EXTENT
SWMU 10
WGS84, UTM ZONE 12 N, METERS
HORIZONAL DATUM: WGS 1984 | VERTICAL DATUM: NAVD88
TEAD-N MONITORING WELL ABANDONMENT
TOOELE ARMY DEPOT, UTAH
MONITORING WELL ABANDONMENT
Abbreviations
µg/L
BRAC
SWMU
TCE
micrograms per liter
Base Realignment and Closure
Solid Waste Management Unit
trichloroethene
Notes
1. TCE plume boundary is based on results from 2021 annual monitoring event.
2. For conceptual purposes only. All locations are approximate.
3. Map produced using ESRI ArcMap v. 10.7.
References
1. Basemap source: Esri, DigitalGlobe, GeoEye, Earthstar Geographics,
CNES/Airbus DS, USDA, USGS, AeroGRID, IGN, and the GIS User Community
Copyright: © 2013 National Geographic Society, i-cubed
This page intentionally blank

APPENDIX A
PHOTOGRAPH LOG

This page intentionally blank

Appendix A – Photograph Log A-i
Dry/Obstructed Well Abandonment Report
Environmental Remediation Tooele Army Depot North, Utah
TABLE OF CONTENTS
Photograph 1: A-03 after grouting is complete. ....................................................................................... A-1
Photograph 2: A-03 After final grading. .................................................................................................... A-1
Photograph 3: B-12 after grouting is complete. ....................................................................................... A-2
Photograph 4: B-12 after final grading. .................................................................................................... A-2
Photograph 5: B-30 after grouting is complete. ....................................................................................... A-3
Photograph 6: B-30 after final grading. .................................................................................................... A-3
Photograph 7: N-119-88 after grouting is complete. ............................................................................... A-4
Photograph 8: N-119-88 after final grading. ............................................................................................. A-4
Photograph 9: P-01S after grouting is complete. ..................................................................................... A-5
Photograph 10: P-01S after final grading. ................................................................................................. A-5
Photograph 11: P-04S after grouting is complete. P-04D remains functional. ......................................... A-6
Photograph 12: P-05S after grouting is complete. P-05D remains functional. ......................................... A-6
Photograph 13: P-08S after grouting is complete. P-08D remains functional. ......................................... A-7
Photograph 14: P-09D/S after grouting is complete. ............................................................................... A-7
Photograph 15: P-09D/S after final grading. ............................................................................................. A-8
Photograph 16: P-12S after grouting is complete. ................................................................................... A-8
Photograph 17: P-12S after final grading. ................................................................................................. A-9
Photograph 18: P-13S after grouting is complete. P-13D remains functional. ......................................... A-9
Photograph 19: P-14S after grouting is complete. P-14D remains functional. ....................................... A-10
Photograph 20: P-15S after grouting is complete. P-15D remains functional. ....................................... A-10
Photograph 21: P-17S after grouting is complete. P-17D remains functional. ....................................... A-11
Photograph 22: P-18D/S after grouting is complete. ............................................................................. A-11
Photograph 23: P-18D/S after final grading. ........................................................................................... A-12
Photograph 24: P-20S after grouting is complete. P-20D remains functional. ....................................... A-12
Photograph 25: P-21S after grouting is complete. P-21D remains functional. ....................................... A-13
Photograph 26: P-23S after grouting is complete. P-23D remains functional. ....................................... A-13
Photograph 27: P-24D/S after grouting is complete. ............................................................................. A-14
Photograph 28: P-24D/S after final grading. ........................................................................................... A-14
Photograph 29: P-28S after grouting is complete. P-28D remains functional. ....................................... A-15
Photograph 30: P-30 after grouting is complete. ................................................................................... A-15
Photograph 31: P-30 after final grading. ................................................................................................ A-16
Photograph 32: P-31 after grouting is complete. ................................................................................... A-16
Photograph 33: P-31 after final grading. ................................................................................................ A-17

Appendix A – Photograph Log A-ii
Dry/Obstructed Well Abandonment Report
Environmental Remediation Tooele Army Depot North, Utah

This page intentionally blank

Appendix A – Photograph Log A-1
Dry/Obstructed Well Abandonment Report
Environmental Remediation Tooele Army Depot North, Utah

Photograph 1: A-03 after grouting is complete.

Photograph 2: A-03 After final grading.

Appendix A – Photograph Log A-2
Dry/Obstructed Well Abandonment Report
Environmental Remediation Tooele Army Depot North, Utah

Photograph 3: B-12 after grouting is complete.

Photograph 4: B-12 after final grading.

Appendix A – Photograph Log A-3
Dry/Obstructed Well Abandonment Report
Environmental Remediation Tooele Army Depot North, Utah

Photograph 5: B-30 after grouting is complete.

Photograph 6: B-30 after final grading.

Appendix A – Photograph Log A-4
Dry/Obstructed Well Abandonment Report
Environmental Remediation Tooele Army Depot North, Utah

Photograph 7: N-119-88 after grouting is complete.

Photograph 8: N-119-88 after final grading.

Appendix A – Photograph Log A-5
Dry/Obstructed Well Abandonment Report
Environmental Remediation Tooele Army Depot North, Utah

Photograph 9: P-01S after grouting is complete.

Photograph 10: P-01S after final grading.

Appendix A – Photograph Log A-6
Dry/Obstructed Well Abandonment Report
Environmental Remediation Tooele Army Depot North, Utah

Photograph 11: P-04S after grouting is complete. P-04D remains functional.

Photograph 12: P-05S after grouting is complete. P-05D remains functional.

Appendix A – Photograph Log A-7
Dry/Obstructed Well Abandonment Report
Environmental Remediation Tooele Army Depot North, Utah

Photograph 13: P-08S after grouting is complete. P-08D remains functional.

Photograph 14: P-09D/S after grouting is complete.

Appendix A – Photograph Log A-8
Dry/Obstructed Well Abandonment Report
Environmental Remediation Tooele Army Depot North, Utah

Photograph 15: P-09D/S after final grading.

Photograph 16: P-12S after grouting is complete.

Appendix A – Photograph Log A-9
Dry/Obstructed Well Abandonment Report
Environmental Remediation Tooele Army Depot North, Utah

Photograph 17: P-12S after final grading.

Photograph 18: P-13S after grouting is complete. P-13D remains functional.

Appendix A – Photograph Log A-10
Dry/Obstructed Well Abandonment Report
Environmental Remediation Tooele Army Depot North, Utah

Photograph 19: P-14S after grouting is complete. P-14D remains functional.

Photograph 20: P-15S after grouting is complete. P-15D remains functional.

Appendix A – Photograph Log A-11
Dry/Obstructed Well Abandonment Report
Environmental Remediation Tooele Army Depot North, Utah

Photograph 21: P-17S after grouting is complete. P-17D remains functional.

Photograph 22: P-18D/S after grouting is complete.

Appendix A – Photograph Log A-12
Dry/Obstructed Well Abandonment Report
Environmental Remediation Tooele Army Depot North, Utah

Photograph 23: P-18D/S after final grading.

Photograph 24: P-20S after grouting is complete. P-20D remains functional.

Appendix A – Photograph Log A-13
Dry/Obstructed Well Abandonment Report
Environmental Remediation Tooele Army Depot North, Utah

Photograph 25: P-21S after grouting is complete. P-21D remains functional.

Photograph 26: P-23S after grouting is complete. P-23D remains functional.

Appendix A – Photograph Log A-14
Dry/Obstructed Well Abandonment Report
Environmental Remediation Tooele Army Depot North, Utah

Photograph 27: P-24D/S after grouting is complete.

Photograph 28: P-24D/S after final grading.

Appendix A – Photograph Log A-15
Dry/Obstructed Well Abandonment Report
Environmental Remediation Tooele Army Depot North, Utah

Photograph 29: P-28S after grouting is complete. P-28D remains functional.

Photograph 30: P-30 after grouting is complete.

Appendix A – Photograph Log A-16
Dry/Obstructed Well Abandonment Report
Environmental Remediation Tooele Army Depot North, Utah

Photograph 31: P-30 after final grading.

Photograph 32: P-31 after grouting is complete.

Appendix A – Photograph Log A-17
Dry/Obstructed Well Abandonment Report
Environmental Remediation Tooele Army Depot North, Utah

Photograph 33: P-31 after final grading.

Appendix A – Photograph Log A-18
Dry/Obstructed Well Abandonment Report
Environmental Remediation Tooele Army Depot North, Utah

This page intentionally blank

APPENDIX B
WELL ABANDONMENT REPORT

This page intentionally blank

This page intentionally blank