DERR-2025-004906

April 16, 2025

Prepared for:

Rocky Mountain Power
Environmental Remediation & Reclamation
1407 West North Temple, Suite 110
Salt Lake City, Utah 84116
Prepared by:

Hill West Environmental, LLC
7963 Douglas Drive
Park City, Utah 84098
Project 2064-0034
POWER DISTRICT REDEVELOPMENT PROJECT
- VCP AREA ’B’ SITE CHARACTERIZATION WORK PLAN

1569 WEST NORTH TEMPLE STREET
SALT LAKE CITY, UTAH

FACILITY ID NO. 4002609
VCP ID NO. VCP-C119

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Power District Redevelopment Project
- VCP Area ‘B’ Site Characterization Work Plan
1569 West North Temple, Salt Lake City, Utah
Facility ID No. 4002609, VCP ID No. VCP-C119
The material and data in this work plan were prepared under the supervision and direction
of the undersigned.

A&M Engineering and Environmental Services, Inc.

Daniel J. Landry
Senior Scientist

Hill West Environmental, Inc.

Claude Dahlk, CHMM
UST Certified Consultant CC-0256

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CONTENTS
LIST OF TABLES AND FIGURES IV
1 INTRODUCTION 1-1
1.1 Site Characterization Work Plan Organization 1-2
2 BACKGROUND 2-1
2.1 Site Description 2-1
2.2 RMP Power District Redevelopment Project 2-1
2.3 Site Historical Use 2-2
2.4 Recent Site Investigations 2-5
3 SCOPE OF WORK 3-1
3.1 Pre-Field Activities 3-1
3.2 Direct-push Soil and Groundwater Assessment 3-2
3.3 Direct-push Soil Profiling for CCR 3-4
3.4 Groundwater Assessment – Monitoring Wells 3-4
3.5 Contingency Sampling 3-8
3.6 Investigation Derived Waste 3-8
4 DATA EVALUATION AND REPORTING 4-9
4.1 Data Evaluation 4-9
4.2 Reporting 4-9
REFERENCES
TABLES
FIGURES
APPENDIX A DECEMBER 2020 PRELIMINARY SITE INVESTIGATION
GEOLOGIC CROSS SECTIONS
APPENDIX B FIELD FORMS

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FIGURES
Tables Following Text
1 Summary of Soil Analytical Results – RCRA Metals and Cyanide
2 Summary of Soil Analytical Results – VOCs, GRO, DRO, ORO, Oil and Grease,
and PCBs
3 Summary of Soil Analytical Results – SVOCs
4 Summary of Soil Analytical Results - BTUs
5 Summary of Groundwater Analytical Results – RCRA Metals, Cyanide, GRO,
DRO, ORO, Oil and Grease, VOCs, SVOCs, and PCBs
Figures Following Text
1 Site Location Map
2 Power District Area Map
3 Prior Assessments Map
4 Proposed Soil Boring Locations
5 Potential Groundwater Monitoring Well Locations

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1 INTRODUCTION
PacifiCorp/Rocky Mountain Power (RMP) retained Hill West Environmental, LLC (Hill
West) to prepare this Site Characterization Work Plan (SCWP) for characterization of
Voluntary Cleanup Program (VCP) Area ‘B’ for the RMP Power District Redevelopment
Project (the Site) located at 1569 West North Temple Street, Salt Lake City, Salt Lake
County, Utah (Figures 1 and 2).
The project is being completed under the oversight of the Utah Department of
Environmental Quality (DEQ) through the Division of Environmental Response and
Remediation (DERR) under the VCP, pursuant to Title 19, Chapter 8 of the Utah Code. In
February 2022, DERR assigned the Site VCP Identification No. VCP-C119.
Prior investigation and remedial actions for VCP Areas ‘B’ have included petroleum
underground storage tank (UST) investigation and remediation during the 1990s and a
December 2020 preliminary Site investigation for soil and groundwater (Hill West, 2021).
During December 2023, Phase II Environmental Site Assessment (ESA) investigations
were performed at select locations within VCP Areas ‘B’ and ‘D’, and south of VCP Areas
‘B’ and ‘D’ by Tetra Tech on behalf of CTP DEV, LLC a subsidiary of Larry H. Miller
Real Estate (LHM) in connection with potential ownership transfers of the RMP property
(Tetra Tech, 2023a and 2023b).
The purpose of this SCWP is to collect additional data to complete the characterization of
VCP Area ‘B’. This SCWP does not include additional characterization of VCP Areas ‘C’
and ‘D’. Any proposed additional characterization for VCP Areas ‘C’ and ‘D’ will be
forthcoming when redevelopment work is ready to begin in those Areas. Completion of
this SCWP will allow development of VCP Area ‘B’ to proceed in the interim.
Based on review and analysis of the data previously collected and in light of the intended
development of VCP Area ‘B’, the following data gaps have been identified:
(1) characterization of shallow soil that will be excavated during installation of
infrastructure, (2) further investigation of the former UST area in VCP Area ‘B’ to confirm
current conditions, and (3) further assessment of groundwater quality and groundwater
gradient and flow direction.
This SCWP provides proposed investigation of surface soil (0 to 2 inches bgs), shallow
soil (0 to 5 feet bgs), and, as required, soil at the soil/groundwater interface (6 to 9 feet bgs)
in VCP Area ‘B’, further investigation of the former UST area in VCP Area ‘B’, and
assessment of groundwater. This document presents sample locations, depths, and specific

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analyses for each sampling location for further assessment of VCP Area ‘B’ for potential
remedial action.
1.1 Site Characterization Work Plan Organization
This SCWP is organized into the following sections:
 Section 1 (Introduction) presents the purpose of the SCWP;
 Section 2 (Background) presents a description of the Site and background
information regarding the Site, proposed Site redevelopment, and summarizes
the results of the petroleum UST investigation and remediation in VCP
Area ’B’, the December 2020 Site investigation, and the Phase II ESA
investigations by Tetra Tech in December 2023;
 Section 3 (Sampling and Analysis Plan) presents the sampling locations,
proposed methodologies for soil and groundwater sampling, equipment
decontamination, sample analyses, and investigation derived waste (IDW)
management; and
 Section 4 (Reporting) presents the proposed reporting for the SCWP.

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2 BACKGROUND
This section describes background information regarding the RMP Power District
Redevelopment Project. Descriptions of the Site and Site history, the proposed
development, and summaries of the results from the petroleum USTs investigation and
remediation in VCP Area ‘B’, the December 2020 preliminary Site investigation, and the
Phase II ESA investigations by Tetra Tech in December 2023 are presented below.
2.1 Site Description
The Site is located at 1569 West North Temple Street in Salt Lake City, Utah in the
southeast quarter of Section 34, Township 8 North, Range 1 West and northeast quarter of
Section 3, Township 15 North, Range 1 West of the Salt Lake Meridian (Figure 1). The
Power District Redevelopment Project is approximately 72.41-acres in area and is currently
used as: a RMP Service Center, equipment and vehicle storage, warehousing, the RMP
Headquarters Building, and vehicle parking (Figure 2).
The Power District Redevelopment Project is in a predominantly commercial/industrial
area. The Site is bordered by the Jordan River to the east with industrial and commercial
properties beyond; to the north by West North Temple Street and a Utah state liquor store
with commercial properties and a recreational vehicle park beyond; a hotel, commercial
businesses, a former trucking terminal to the west with Redwood Road and commercial
businesses and a truck stop beyond; and a railroad spur, the Gadsby Power Plant, a
transportation trucking terminal, a railroad right-of-way, and Interstate Highway 80 to the
south.
Shallow groundwater was encountered during prior Site investigation at depths ranging
from 6 to 9.1 feet bgs.
2.2 RMP Power District Redevelopment Project
The proposed Power District Redevelopment Project proposes operation of the current
Gadsby Power Plant through 2030s, construction of a new RMP Headquarters Building
and parking structure, and development over time of the remaining property by LHM with
commercial, retail, and potentially residential land use.
Currently, the RMP Power District Redevelopment Project consists of four (4) separate
VCP Areas (Figure 2):

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 VCP Area ‘A’ – Currently completing remedial actions;
 VCP Area ‘B’ – Current RMP Equipment and Vehicle Storage Area;
 VCP Area ‘C’ – RMP Service Center/Parking Lots; and
 VCP Area ‘D’ – Current RMP Headquarters Building, Parking, and Warehouse;
This SCWP only addresses Site characterization for VCP Area ‘B’.
2.3 Site Historical Use
Areas of the Power District Redevelopment Project property were backfilled with industrial
and residential waste from the late 19th Century to the mid-1930s. PacifiCorp and its
predecessors have owned the Power District Redevelopment Project property since the
1950s. Since that time, PacifiCorp has utilized the Site for an electrical power generating
facility (not part of the VCP), a corporate office in VCP Area ‘D’, a service center in VCP
Area ‘C’, petroleum fuel storage and dispensing, and vehicle and equipment storage in
VCP Area ‘B’, a motor pool with on-Site fueling and vehicle service in VCP Area ‘A’, and
a former tank farm with ASTs was in the southeast corner of VCP Area ‘A’.
Further investigation was completed for historical backfill material in 1995 and 1998 and
is discussed in Section 2.3.1 and a petroleum leaking underground storage tank (LUST)
investigation and cleanup was completed for USTs located in the southern half of VCP
Area ‘B’ and is discussed in Section 2.3.2.
2.3.1 Historical Backfill Material Investigations
In 1995 and 1998, investigations were completed by RMP and DERR related to the
historical use of Power District Redevelopment Project property as a municipal landfill
known as the “South Temple Landfill” which appears to be the source of the cyanide and
mercury found and the Abatement (mosquito) Canal that was the source of chlorinated
solvents (tetrachloroethylene, trichloroethylene, and 1,1,1-trichloroethane) reported in soil
near the used oil UST in VCP Area ‘D’ (PacifiCorp, 1997). The investigations include soil
and groundwater assessment in October 1995 by JBR Environmental Consultants (JBR,
1996) and a Site Inspection completed by DERR in September and October 1998 to
investigate surface and subsurface soil, groundwater, and surface water and sediment in
the Jordan River (DERR, 2000).
2.3.1.1 1995 Soil and Groundwater Investigation
The 1995 soil and groundwater investigation completed by JBR for VCP Area ‘D’ and the
southeast portion of VCP Area ‘B’ included eleven (11) soil borings to collect soil samples
and groundwater samples from temporary wells in five (5) of the borings. Soil borings B-1
and B-4 were located within VCP Area ‘B’. Laboratory analytical results for soil samples
indicated arsenic was reported above 3.0 milligrams per kilogram (mg/kg), the current

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United States Environmental Protection Agency (USEPA) Industrial Regional Screening
Level (RSL), at concentrations of 11 mg/kg and 4.6 mg/kg. Total petroleum hydrocarbons
(TPH), polychlorinated biphenyls (PCBs), semi volatile organic compounds (SVOCs), and
the remaining Resource Conservation and Recovery Act (RCRA) metals were either, not
reported at, or above, laboratory reporting limits (RLs) or were reported below screening
levels.
Laboratory analytical results for the unfiltered groundwater sample collected from the
temporary well installed in soil boring B-1 indicated RCRA metals, TPH, PCBs, and
SVOCs were either not reported at, or above, laboratory RLs or were reported below
screening levels.
2.3.1.2 1998 Site Investigation
The Site Inspection completed by DERR in 1998 included the collection of three (3)
surface soil samples (0.5 to 2-feet bgs), six (6) subsurface samples (>2-feet bgs), six (6)
groundwater samples, two (2) sediment samples, and two (2) surface water samples.
Sample collection included background samples for each of the media assessed.
One (1) surface soil sample (LF-SS-04), one (1) subsurface sample (LF-SB-03), and
one (1) groundwater sample (LF-GW-06) were collected from VCP Area ‘C’ and two (2)
surface soil samples (LF-SS-03 and LF-SS-05), and one (1) subsurface sample
(LF-SB-04), and one (1) groundwater sample (LF-GW-07) were collected from VCP Area
‘E’ during the investigation.
Laboratory analytical results for soil subsurface samples indicated arsenic was reported
above 3.0 mg/kg, the current USEPA Industrial RSL, at concentrations of 18.1 mg/kg and
3.1 mg/kg. All other RCRA metals, PCBs, volatile organic compounds (VOCs), and
SVOCs were either not reported at, or above, laboratory RLs or were reported below
screening levels.
Laboratory analytical results for the unfiltered groundwater samples collected from
temporary wells installed in soil borings B-3 and B-4 indicated arsenic and lead were
reported above Maximum Contaminant Levels (MCLs). All other RCRA metals, PCBs,
VOCs, and SVOCs were either not reported at, or above, laboratory RLs or were reported
below screening levels.
The DEQ concluded the following:
 …there were no concentrations whose on-site concentrations exceeded the
background level by three timesSIC or more times, thus negating the possibility of a
release from landfill operations.
 the source of these metals in the Jordan River is more likely attributable to an
upstream source than the site.

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 The lack of analytical data showing surface water contamination attributable to the
site, and the fact that there were no surface water drinking water sources in the area
or down-gradient from the site, leads to the conclusion that there is little likelihood
of any exposure to any human targets from a surface water release of contaminants
from the landfill.
2.3.2 VCP Area ‘B’ LUST Investigation and Remediation
The Salt Lake Service Center facility located on VCP Areas ‘B’ and ‘C’ included the
operation of five (5) steel USTs and fuel dispensers located in the southern half of VCP
Area ‘B’ (Figure 3). The USTs were: a 12,000-gallon unleaded gasoline and 12,000-gallon
diesel UST decommissioned in 1990, two (2) 12,000-gallon unleaded gasoline USTs
decommissioned in 1993, and a 12,000-gallon regular gasoline, later converted to diesel in
1991, also decommissioned in 1993 (EnviroSearch, 1994a).
In February 1990, during precision tank and line testing of the three eastern USTs, the
12,000-gallon diesel failed the tightness testing. The diesel UST and the adjacent unleaded
gasoline UST were decommissioned by removal in November 1990, petroleum impacts
were identified, reported to DERR, and assigned Release Site ID EHFH. Contaminated soil
excavation was completed to the extent feasible and soil samples collected. Verification
samples indicated soil contamination remained to the south and the west of the excavation.
Further excavation was prevented by the presence of a UST to the south and the fuel
dispensers to the west. The approximately 150 cubic yards of contaminated soil was placed
on Site for treatment by aeration and bioremediation in VCP Area ‘F’. In January and April
1991, six (6) groundwater monitoring wells (MW-1 through MW-6) were installed in the
vicinity of the USTs (Figure 3). Groundwater monitoring results indicated TPH and
benzene, toluene, ethylbenzene, and xylenes (BTEX) were present in groundwater samples
(EnviroSearch, 1994a). Free-phase hydrocarbons (product) were also reported in
monitoring well MW-1, located north of the USTs. Depth to groundwater was measured at
6 to 8 feet bgs and groundwater flow direction was reported to the north and the
north-northwest.
In August 1993, the remaining two (2) 12,000-gallon unleaded gasoline USTs and
12,000-gallon regular gasoline, later converted to diesel in 1991, and dispensers were
decommissioned by removal. Petroleum impacts were identified in soil and groundwater
for the two (2) western USTs and reported to DERR. Following UST decommissioning,
approximately 2,250 gallons of product and groundwater were removed from the
excavation and disposed off-Site. In October 1993, the tank pit was over-excavated to the
north and west and soil samples collected. During soil excavation monitoring well MW-1
was decommissioned. Approximately 1,758 tons of soil was disposed off-Site.
Groundwater monitoring results in January 1994 indicated TPH was reported above
cleanup levels in samples collected from monitoring wells MW-3, MW-4, and MW-6
(EnviroSearch, 1994a). Additional quarterly groundwater monitoring was recommended.

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Additional groundwater monitoring in 1994 indicated petroleum was limited in
concentration and extent and did not pose a risk to human health and the environment
(EnviroSearch, 1994b). DERR issued a No Further Action (NFA) determination for the
release on July 3, 1995 (DERR, 1995).
2.4 Recent Site Investigations
Environmental assessments have been completed within RMP Power District
Development Project VCP Areas during the recent past. Preliminary Site investigation was
completed for soil and groundwater in December 2020 and Phase II ESA investigations
were performed by Tetra Tech in December 2023. The results of the Site investigations
are summarized in the following sections.
2.4.1 Soil and Groundwater Assessment – December 2020
In December 2021, a subsurface investigation was completed for the RMP Salt Lake
Service Center located at 1569 West North Temple, Salt Lake City, Utah. The investigation
area consisted of approximately twenty-three (23) acres that included the Salt Lake Service
Center, parking lots, and storage equipment areas, which included the majority of VCP
Areas ‘B’ and ‘C’ and south of VCP Areas ‘B’ and ‘C’ (Figure 3).
The investigation was completed to assess the subsurface for various potential
contaminants that may have impacted the Site and possibly groundwater, due to historical
operations on the property. The investigation consisted of advancing twenty-three (23)
direct-push soil borings (Figure 3) to competent clay at depths of 20 to 30 feet bgs to collect
soil and groundwater samples. A total of sixteen (16) soil samples were collected based on
field screening results and five (5) groundwater samples were collected for laboratory
analyses. Geologic cross sections were prepared based on soil boring logs prepared during
the investigation.
The results and findings for the Site investigation were summarized in the Subsurface
Investigation Report, dated February 9, 2021 (Hill West, 2021) and were as follows:
2.4.1.1 Geology
Six (6) geologic cross sections were prepared for the investigation area, three (3) from west
to east and three from (3) north to south (Appendix A, Figure A-1). The geologic
cross-sections indicated that fill material beneath the Site ranges in depth from 1 to 6 feet
bgs except for the “engineered fill” identified to a depth of 10.5 feet bgs in direct-push
boring NTO-13, advanced immediately east of the multistory office structure at the Site.
The fill material was observed to be underlain by clay, underlain by sands and silty sands,
underlain by an additional clay layer to the maximum depth explored of 30 feet bgs. The
geologic cross sections are presented as Figures A-2 through A-7 in Appendix A.

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2.4.1.2 Soil
The laboratory analytical results for RCRA metals, cyanide, VOCs, SVOCs, PCBs, and
diesel range organics (DRO) analyses are presented in Tables 1, 2, and 3 and are
summarized below.
 Arsenic was reported at concentrations above the current USEPA Residential Soil
RSL (0.68 mg/kg) and Industrial Soil RSL (3.0 mg/kg) for direct contact with soil in
majority of the native and fill soil samples. The highest concentration (163 mg/kg)
was reported in the composite soil sample of non-native fill from soil borings NTO-
9 and NTO-10 located south of the office structure along the northern border of South
Temple Street. The samples from the borings were composited to characterize the
non-native fill which appeared to be the same material.
Lead was reported above the current USEPA Residential Soil RSL (200 mg/kg) and
Industrial Soil RSL (800 mg/kg) for direct contact with soil at a concentration of
8,300 mg/kg in the composite soil sample of non-native fill from soil borings NTO-9
and NTO-10 located south of the office structure along the northern border of South
Temple. Lead was not reported above either the USEPA Residential Soil or Industrial
Soil RSLs in all remaining soil samples.
Cadmium was reported in the composite soil sample of non-native fill from soil
borings NTO-9 and NTO-10 located south of the office structure along the northern
border of South Temple at a concentration of 20.9 mg/kg, above the USEPA
Residential RSL (7.1 mg/kg), but below the USEPA Industrial RSL (100 mg/kg).
Barium, chromium, selenium, silver, mercury, and cyanide were either not reported
above laboratory RLs or were reported below their respective USEPA Residential
Soil and Industrial Soil RSLs in all native and non-native fill soil samples.
 VOCs, SVOCs, and PCBs were not reported at, or above, laboratory RLs in all native
and non-native fill soil samples.
 DRO was reported above the DERR Initial Screening Level (ISL) (500 mg/kg) in the
soil sample collected from soil boring NTO-6 at 14.5 feet bgs below the
groundwater/soil interface in VCP Area ‘C’.
 Thermal energy analysis of the suspected coal sample collected from NTO-21 at
0.5 to 1.0 feet bgs reported a value consistent with those expected for coal (Table 4).
2.4.1.3 Groundwater
The laboratory analytical results for RCRA metals, cyanide, VOCs, SVOCs, and PCBs
analyses are presented in Table 5 and are summarized below.
 Arsenic was reported above the USEPA MCL and the Tap Water RSL in groundwater
samples collected from soil borings NTO-1, NTO-6, and NTO-22, and above the

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USEPA Tap Water RSL, but below the USEPA MCL in the sample collected from
soil boring NTO-18. The highest concentrations were reported in the groundwater
samples collected from soil borings NTO-1 in the northeast corner of VCP Area ‘B’
and NTO-22 located in the northwest corner of the Historical Coal Storage Area.
Lead was reported above USEPA MCLs and the Tap Water RSL in groundwater
samples collected from soil borings NTO-1, NTO-6, and NTO-22. The highest
concentrations were reported in the groundwater samples collected from soil borings
NTO-1 in the northeast corner of VCP Area ‘B’ and NTO-22 located in the northwest
corner of the Historical Coal Storage Area.
Barium, cadmium, chromium, selenium, silver, mercury, and cyanide were either not
reported at, above, laboratory RLs or were not reported above USEPA MCLs or Tap
Water RSLs in all groundwater samples.
 VOCs, SVOCs, and PCBs were not reported at, or above, laboratory RLs in all
groundwater samples.
2.4.2 Tetra Tech Phase II ESA Soil and Groundwater Assessments –
December 2023
In December 2023, Phase I and II ESAs were completed by Tetra Tech for CTP DEV, LLC
on the Power District Redevelopment Project property, including the RMP Salt Lake
Service Center located at 1569 West North Temple Street, Salt Lake City, Utah (VCP
Areas ‘B’ and ‘D’, and south of VCP Areas ‘B’ and ‘D’) and the adjacent 1470 West North
Temple Street, Salt Lake City, Utah property (VCP Area ‘A’).
The investigations were completed to assess Recognized Environmental Conditions
(RECs) related to contaminants arsenic, lead, and petroleum hydrocarbons identified in the
December 2021 subsurface investigation (Hill West, 2021) and historical operations on the
1569 West North Temple Street property, and RECs related to contaminants arsenic, lead,
and SVOCs identified in JBR’s 1996 subsurface investigation (JBR, 1996), the historical
Abatement Canal, and historical USTs cleanup on the 1407 West North Temple Street
property. The investigations consisted of advancing seven (7) direct-push soil borings
(TT-1-1 through TT-1-7) to 15-feet bgs to collect soil and groundwater samples from
temporary wells and to install three (3) groundwater wells (TT-1-2, TT-1-4, and TT-1-7)
on the 1569 West North Temple Street property; and advancing eleven (11) direct-push
soil borings (TT-2-1 through TT-2-11) to 15-feet bgs to collect soil and groundwater
samples and to install three (3) groundwater wells (TT-2-1, TT-2-8, and TT-2-11) on the
1407 West North Temple Street property. A total of eighteen (18) soil samples and eleven
(11) groundwater samples from temporary wells were collected from the soil borings for
laboratory analyses. The soil boring and groundwater monitoring well locations are
presented on Figure 3.

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The results and findings for the Site investigations were summarized in the Phase II
Environmental Site Assessment – Rocky Mountain Power Site Block 1 and Phase II
Environmental Site Assessment – Rocky Mountain Power Site Block 2 reports, dated
May 15, 2023 (Tetra Tech, 2023a and 2023b) and were as follows:
2.4.2.1 Soil
The laboratory analytical results for RCRA metals, cyanide, VOCs, SVOCs, PCBs,
gasoline range organics (GRO), DRO, oil range organics (ORO), and oil & grease (O&G)
analyses are presented in Tables 1, 2, and 3 and are summarized below.
 Arsenic was reported at concentrations above the current USEPA Residential Soil
RSL (0.68 mg/kg) and Industrial Soil RSL (3.0 mg/kg) for direct contact with soil in
all soil samples except one. The highest concentration (117 mg/kg) was reported in
the soil sample collected from soil boring TT-2-7 at 2-feet bgs located on the
easternmost portion of VCP Area ‘B’ north of South Temple Street.
Lead was reported above the current USEPA Residential Soil RSL (200 mg/kg) and
Industrial Soil RSL (800 mg/kg) the for direct contact with soil at a concentration of
815 mg/kg in the soil sample collected from soil boring TT-1-4 at 5-feet bgs located
southwest of the Historical Coal Storage Area in VCP Area E.
Lead was also reported above the USEPA Residential Soil RSL (200 mg/kg) in the
soil samples collected from TT-2-1 at 8-feet bgs located in VCP Area ‘D’ and TT-2-
6 at 2-feet bgs located on the easternmost portion of VCP Area ‘B’ north of South
Temple Street.
Barium, cadmium, chromium, selenium, silver, mercury, and cyanide were either not
reported at, or above, laboratory RLs or were reported below their respective USEPA
Residential Soil RSLs and Industrial Soil RSLs in all soil samples.
 The VOCs acetone and naphthalene were reported above the laboratory RL, but
below USEPA Residential Soil RSLs and Industrial Soil RSLs and in the soil sample
collected from soil boring TT-1-4 at 5-feet bgs. All other VOCs were not reported at
or above the laboratory RLs in the soil sample.
VOCs were not reported at, or above, USEPA RSLs in the remaining soil samples
analyzed for VOCs.
 GRO, DRO, and ORO were either not reported above laboratory RLs or were
reported below their respective DERR ISLs in all soil samples analyzed for petroleum
hydrocarbons.
 O&G was reported above the DERR ISL (1,000 mg/kg) in the soil samples collected
from soil boring TT-2-8 at 6.5-feet bgs (8,180 mg/kg) and the soil sample collected
from soil boring TT-2-10 at 7-feet bgs (2,160 mg/kg) located in VCP Area ‘D’.

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O&G was not reported at, or above, the DERR ISL in the remaining soil sample.
 PCBs were not reported at, or above, laboratory RLs in all soil samples.
 The SVOCs benzo(a)anthracene, benzo(b)fluoranthene, benzo(a)pyrene, chrysene,
fluoranthene, phenanthrene, and pyrene were reported above the laboratory RL, but
below USEPA Residential Soil RSLs and Industrial Soil RSLs in the soil sample
collected from soil boring TT-1-4 at 5-feet bgs southwest of the Historical Coal
Storage Area.
Phenanthrene, and pyrene were also reported above the laboratory RL, but below
USEPA Residential Soil RSLs and Industrial Soil RSLs in the soil sample collected
from soil boring TT-2-10 at 10-feet bgs in VCP Area ‘D’.
SVOCs were not reported at or above USEPA RSLs in the remaining soil samples
analyzed for SVOCs.
2.4.2.2 Groundwater
The laboratory analytical results for RCRA metals, cyanide, GRO, DRO, ORO, O&G,
VOCs, SVOCs, and PCBs analyses for groundwater samples collected from temporary
wells placed in the soil borings are presented in Table 5 and are summarized below.
 Arsenic was reported above the USEPA MCL (10 g/L) and the Tap Water RSL
(0.052 g/L) in groundwater samples collected from all soil borings. The highest
concentrations were reported in the groundwater samples collected from soil boring
TT-1-3 (90.9 g/L) located west of the Historical Coal Storage Area and from soil
boring TT-2-8 (176 g/L) located in VCP Area ‘D’ north of South Temple Street.
Cadmium was reported above the USEPA MCL (5 g/L) and the Tap Water RSL
(1.8 g/L) in groundwater samples collected from soil boring TT-1-3 (11.2 g/L)
located west of the Historical Coal Storage Area and soil boring TT-2-8 (7.13 g/L)
located in VCP Area ‘D’ north of South Temple Street.
Cadmium was also reported above the Tap Water RSL (1.8 g/L) in the groundwater
samples collected from soil boring TT-1-2 (3.63 g/L) located east of the Historical
Coal Storage Area, soil boring TT-1-5 (2.57 g/L) located in the southwest of soil
borings TT-1-4 and TT-2-10 (2.29 g/L) located in the central portion of VCP
Area ‘D’.
Cadmium was not reported at or above laboratory RLs in the remaining groundwater
samples collected.
Chromium was reported above the USEPA MCL (100 g/L) in the groundwater
sample collected from soil boring TT-2-8 (285 g/L) located in VCP Area ‘D’ north
of South Temple Street.

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Lead was reported above the USEPA MCL (10 g/L) and the Tap Water RSL
(10 g/L) in groundwater samples collected from all soil borings, except the sample
collected from soil boring TT-1-5. The highest concentrations were reported in the
groundwater samples collected from soil boring TT-1-3 (352 g/L) located west of
the Historical Coal Storage Area and from soil boring TT-2-8 (573 g/L) located in
VCP Area ‘D’ north of South Temple Street.
Barium, selenium, silver, mercury, and cyanide were either not reported at, or above,
laboratory RLs or were not reported above USEPA MCLs and/or Tap Water RSLs in
all groundwater samples.
 GRO, DRO, and ORO were either not reported at, or above, laboratory RLs or were
reported below their respective DERR ISLs in all groundwater samples analyzed.
 O&G was not reported at, or above, the laboratory RL in all groundwater samples
analyzed.
 The VOCs ethylbenzene and total xylenes were reported above the laboratory RL,
but below their respective USEPA MCLs and the Tap Water RSLs in the groundwater
sample collected from soil boring TT-1-5. All other VOCs were not reported at, or
above, laboratory RLs in the groundwater sample.
VOCs were not reported at, or above, laboratory RLs in all remaining groundwater
samples.
 SVOCs and PCBs were not reported at, or above, laboratory RLs in all groundwater
samples analyzed.

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3 SCOPE OF WORK
Prior Site investigations for VCP Areas ‘B’ have been completed for soil and groundwater.
Based on review and analysis of the data previously collected and in light of the intended
development of VCP Areas ‘B’, the following data gaps have been identified:
(1) characterization of shallow soil that will be excavated during installation of
infrastructure; (2) further investigation of the former UST area in VCP Area ‘B’ to confirm
current soil and groundwater conditions; and (3) further assess groundwater quality and
groundwater gradient and flow direction. This SCWP has been prepared to present the
sampling to be conducted to augment previous studies by addressing data gaps to provide
a complete characterization of VCP Area ‘B’ under the VCP.
The proposed scope of work provides for the sampling of surface soils (0 to 2-inches bgs)
to evaluate risks associated with development of the Site, sampling of shallow soil (4 to
5 feet bgs) to characterize the soils anticipated to be disturbed during installation of
infrastructure and building foundations, profiling of coal combustion residual (CCR) in
shallow soil (<5 feet bgs) along South Temple Street, further assessment of soil at the
groundwater/soil interface, if it is greater than 10 feet bgs or was not previously assessed,
and collection of groundwater samples from temporary well points to evaluate groundwater
quality. Finally, based on groundwater data collected from the temporary well points,
additional groundwater monitoring wells will be installed to evaluate impacts to
groundwater and to further assess groundwater gradient and flow direction. All work will
be completed consistent with the Power District Redevelopment Project – Sampling and
Analysis & Quality Assurance Project Plan , dated August 2, 2022 (Hill West, 2022b).
If unexpected contamination is identified during Site characterization field activities, the
procedures outlined in the Waste Management Plan, dated July 20, 2022 (Hill West, 2022a)
will be followed.
The following sections detail the proposed additional characterization.
3.1 Pre-Field Activities
Site characterization activities will be completed under a suitable Site-specific health and
safety plan (HASP) prepared in accordance with Occupational Safety & Health
Administration (OSHA) CFR 1910.120. The HASP will include a chemical and physical
hazard evaluation, an operations plan, safety equipment and procedures, and emergency
procedures.

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Prior to initiating the soil and groundwater investigation activities, all appropriate
notifications will be made for the subsurface investigation activities. Underground utilities
in the planned sampling area will be located through Blue Stakes and the proposed sample
locations will be identified with RMP. Each soil boring location will also be cleared using
a third-party Ground Penetration Radar (GPR) utility locator for the proposed subsurface
investigation locations.
3.2 Direct-push Soil and Groundwater Assessment
In December 2020, a preliminary Site investigation was completed for the majority of VCP
Areas ‘B’ and ‘C’, and south of VCP Areas ‘B’ and ‘C’ (Figure 3) (Hill West, 2021). The
preliminary Site investigation included twenty-three (23) direct-push soil borings
(Figure 3), including VCP Area ‘B’, to collect soil and groundwater samples. The soil
samples were collected predominantly from the soil/groundwater interface at 8 to 10 feet
bgs in the soil borings. Groundwater samples were also collected from five (5) of the soil
borings.
In December 2023, Phase II ESAs were completed by Tetra Tech for CTP DEV, LLC
within Areas ‘B’ and ‘D’, and south of VCP Areas ‘B’ and ‘D’ (Tetra Tech, 2023a and
2023b). The Site investigation included nine (9) direct-push soil borings (Figure 3),
including VCP Area ‘B’, to collect soil and groundwater samples and install three (3)
groundwater wells. The soil samples were collected from depths of 2 to 7.5 feet bgs in the
soil borings. Groundwater samples were also collected from seven (7) of the soil borings.
The proposed Site characterization will include up to twenty-four (24) direct-push soil
borings on an approximately ¾-acre grid throughout VCP Area ‘B’ (Figure 4) to assess
surface soil (0 to 2 inches bgs), shallow soil (<5 feet bgs), to further assess soil at the
groundwater/soil interface, if it is greater than 10 feet bgs or was not previously assessed
(all soil borings except those near NTO-1 and NTO-14), and to collect groundwater
samples from temporary well points. The proposed soil and groundwater characterization
is detailed in the following sections.
3.2.1 Asbestos Containing Materials
Asbestos containing materials (ACM) have previously been identified in the RMP Power
District Redevelopment Project VCP Areas, it is not anticipated that asbestos containing
material will be encountered during assessment. However, given the historic use of the
area, it is possible that Transite® piping, asbestos containing insulation, or other suspect
ACM may be encountered below ground surface.
If suspected ACM is encountered in soil borings, a DEQ Division of Air Quality
(DAQ)-certified Asbestos Inspector/Management Planner/Project Designer will collect
bulk samples of all suspected ACM encountered. All samples will be submitted to an
approved laboratory for asbestos content analysis.

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3.2.2 Direct-Push Soil Sampling
Up to twenty-four (24) direct-push soil borings will be advanced to 15 feet bgs in VCP
Areas ‘B’ (Figure 4). During direct-push drilling activities, soil samples will be collected
continuously in new plastic liners provided by the direct-push drilling contractor. Each
liner will be opened, and the soil will be field screened for VOCs using a photoionization
detector (PID). Up to three (3) soil samples will be collected from each boring at 0 to
2-inches bgs below the surface pavement and base rock, at 4 to 5-feet bgs, and at the
soil/groundwater interface, if it is greater than 10 feet bgs, was not previously assessed (all
soil borings except those near NTO-1 and NTO-14), or where suspected impacts are
observed. All soil samples will be collected using laboratory-supplied jars.
A field log will be prepared for each direct-push boring. Field logs will include the project
name and location, soil sample depths, drilling characteristics, and descriptions of the soils
encountered. Subsurface lithology will be described consistent with ASTM International
(ASTM) D2488-84, Standard Practice for Description and Identification of Soils (Visual-
Manual Procedures).
The direct-push sampling barrel will be decontaminated between each direct-push boring
in accordance with the drilling contactor’s standard procedures. All fluids generated during
decontamination procedures will be containerized in United States Department of
Transportation (DOT)-approved 55-gallon drums pending characterization and appropriate
disposal.
3.2.2.1 Laboratory Analyses
All soil samples will be submitted under standard chain-of-custody (COC) procedure to
ChemTech-Ford Laboratories, Inc. (ChemTech) in Sandy, Utah, or another approved
laboratory that is a Utah accredited laboratory, for analyses. All soil samples will be
analyzed for RCRA metals arsenic, barium, cadmium, chromium, lead, selenium, and
silver by USEPA Methods 6010B and 6020B and mercury by USEPA Method 7471, for
cyanide by Standard Method SM4500CN, for VOCs by USEPA Method 8260B, for
SVOCs by USEPA Method 8270C, for PCBs by USEPA Method 8082, and for GRO,
DRO, and ORO by USEPA Method 8015.
3.2.3 Groundwater Sampling
Groundwater samples will be collected from temporary well points installed in the
direct-push soil borings. The temporary wells will be constructed utilizing 1-inch diameter
Schedule 40 polyvinyl chloride (PVC) solid and screened casing or retractable stainless
steel well points. In December 2020 and December 2023, depth to water was measured in
the temporary wells to stabilize between 6 to 9.1 feet bgs.
Prior to collecting groundwater samples, the temporary wells will be purged for 5 to
10 minutes using a peristaltic pump to reduce the turbidity of the groundwater. A

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groundwater sample will be collected from each temporary well using a peristaltic pump
and transferred directly to laboratory-supplied containers with as little agitation as possible,
labeled, and delivered using standard COC procedure to ChemTech-Ford in Salt Lake City,
Utah, or another approved laboratory that is a Utah accredited laboratory, for analyses.
3.2.3.1 Laboratory Analyses
All groundwater samples will be submitted to ChemTech-Ford in Salt Lake City, Utah, or
another approved laboratory that is a Utah accredited laboratory, for analyses. All
groundwater samples will be analyzed for RCRA metals arsenic, barium, cadmium,
chromium, lead, selenium, and silver by USEPA Methods 6010B and 6020B and mercury
by USEPA Method 7471, for cyanide by Standard Method SM4500CN, for VOCs by
USEPA Method 8260B, for SVOCs by USEPA Method 8270C, for 1,4-dioxane by USEPA
Method 8270 Single Ion Method (SIM), for PCBs by USEPA Method 8082, and for GRO,
DRO, and ORO by USEPA Method 8015.
3.3 Direct-push Soil Profiling for CCR
CCR encountered in shallow soil during the December 2020 preliminary Site investigation
of VCP Areas ‘B’ and ‘C’ (Hill West, 2021) along South Temple Street.
The proposed Site characterization will include up to thirteen (13) direct-push soil borings
approximately every 50 feet along the north boundary of South Temple Street, along the
current fence line, and up to five (5) direct-push borings south of South Temple Street to
profile CCR (Figure 4). The borings will be advanced to 5 feet bgs and soil samples will
be collected continuously in new plastic liners provided by the direct-push drilling
contractor. Each liner will be opened, and the soil field screened for CCR, and photo
documented.
A field log will be prepared for each direct-push boring. Field logs will include the project
name and location, soil sample depths, drilling characteristics, and descriptions of the soils
encountered. Subsurface lithology will be described consistent with ASTM International
(ASTM) D2488-84, Standard Practice for Description and Identification of Soils
(Visual-Manual Procedures).
The direct-push sampling barrel will be decontaminated between each direct-push boring
in accordance with the drilling contactor’s standard procedures. All fluids generated during
decontamination procedures will be containerized in USDOT-approved 55-gallon drums
pending characterization and appropriate disposal.
3.4 Groundwater Assessment – Monitoring Wells
The characterization of groundwater in VCP Area ‘B’ will include the installation of
shallow groundwater monitoring wells to further assess groundwater quality and

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groundwater flow direction and gradient. In previous investigations (Hill West, 2021c,
Tetra Tech, 2023a and 2023b) shallow groundwater was encountered in the subsurface at
depths ranging from 6 to 9.1 feet bgs. Based on groundwater monitoring data for the former
ABF Freight Terminal facility located immediately southwest of VCP Area ‘B’, the LUST
investigation in VCP Area ‘B’, and the December 2023 Phase II ESAs groundwater flow
direction is likely to the northwest.
Two (2) existing groundwater monitoring wells (TT-1-2 and TT-2-1) will be utilized with
up to ten (10) new groundwater monitoring wells installed at the Site in accordance with
the Quality Assurance Project Plan (QAPP) (Hill West, 2022b) to evaluate shallow
groundwater beneath the Site. Figure 5 presents the potential locations of the new
monitoring wells. The final number and location of the new monitoring wells will be
determined following evaluation of groundwater quality data collected from the temporary
well points in the direct-push borings. The groundwater monitoring wells will be installed
utilizing direct-push boring techniques.
3.4.1 Direct-push Soil Borings
A Utah licensed well installer will be contracted to advance direct-push borings up to
20 feet bgs in depth for soil sample collection and groundwater monitoring well
construction. During direct-push drilling activities, soil samples will be collected
continuously in new plastic liners provided by the direct-push drilling contractor. Each
liner will be opened, and the soil field will be screened for VOCs using a PID. Soil samples
will be collected at the soil/groundwater interface, and, if contamination is encountered
that was not previously identified during soil screening, from the newly identified
contaminated soil. All soil samples will be collected using laboratory-supplied jars.
A field log will be prepared for each direct-push boring. Field logs will include the project
name and location, soil sample depths, drilling characteristics, blow counts (as appropriate)
and descriptions of the soil encountered. Subsurface lithology will be described consistent
with ASTM D2488-84, Standard Practice for Description and Identification of Soils
(Visual-Manual Procedures). A copy of a blank field log is provided in Appendix B.
The direct-push sampling barrel will be decontaminated between each direct-push boring
in accordance with the drilling contactor’s standard procedures. All fluids generated during
decontamination procedures were containerized in USDOT-approved 55-gallon drums
pending characterization and appropriate disposal.
3.4.1.1 Laboratory Analyses
All soil samples will be submitted under standard COC procedure to ChemTech in Sandy,
Utah, or another approved laboratory that is a Utah accredited laboratory, for analyses. All
soil samples will be analyzed for RCRA metals arsenic, barium, cadmium, chromium, lead,
selenium, and silver by USEPA Methods 6010B and 6020B and mercury by USEPA
Method 7471, for cyanide by Standard Method SM4500CN, for VOCs by USEPA Method

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8260B, for SVOCs by USEPA Method 8270C, for PCBs by USEPA Method 8082, and for
GRO, DRO, and ORO by USEPA Method 8015. If requested by DERR, select
soil/groundwater interface soil samples may also be analyzed for per and polyfluoroalkyl
substances (PFAS) by USEPA Method 1633.Well Construction
A monitoring well will be constructed in each direct-push boring using 2-inch diameter
flush-threaded, Schedule 40, PVC blank casing from the ground surface to the screened
interval and up to 15 feet of 2-inch diameter flush-threaded 0.020-inch slotted PVC casing
in the saturated zone depending on the lithologies encountered during drilling. The filter
pack, transition seal, and annular seals in each well will be installed in accordance with the
Utah Division of Water Rights, Water Well Handbook R655-4 UAC. The wells will be
completed with either above grade standpipes with bollards or flush-mount, traffic-rated
well box monuments, as appropriate to their location.
3.4.2 Well Development
No sooner than 24 hours following well construction, the shallow groundwater monitoring
wells will be developed by surging and then pumping. The wells will be considered
developed when at least three (3) borehole volumes of water have been removed and field
parameters (pH, electrical conductivity, and temperature) stabilize within 10 percent (%)
of the previous reading and the turbidity decreases noticeably. Water generated during
development will be stored at the Site in DOT-approved 55-gallon drums pending
laboratory results. Well development data will be recorded on a well development data sheet
(WDDS). A copy of a blank WDDS is provided in Appendix B.
3.4.3 Well Surveying
Following well construction, the north side of the top of casing and top of box or grade, if
completed above grade, elevation, as well as the State Plane northerly and easterly location
for each shallow groundwater monitoring well will be surveyed by a licensed Utah Land
Surveyor.
3.4.4 Groundwater Sampling
Following monitoring well construction and development, a groundwater monitoring event
for the new monitoring wells and the existing Tetra Tech monitoring wells (TT-1-2 and
TT-2-1) will be completed for the Site. The monitoring event will consist of the following.
Depth-to-water readings will be taken using a decontaminated electronic water probe.
Depth readings will be measured to the nearest 0.01-foot from the north side of the top of
each well casing. Measurements will be recorded immediately on a groundwater
monitoring field sampling data sheet (FSDS). A copy of a blank FSDS is provided in
Appendix B.

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Groundwater elevation measurements taken for a single data set will be obtained from as
short a period of time as practical to reduce the potential for external factors (e.g., rainfall
or barometric pressure) to affect the water levels non-uniformly.
Groundwater samples will be collected utilizing the USEPA’s Standard Operating
Procedure for Low-Stress (Low Flow)/Minimal Drawdown Ground-Water Sample
Collection (USEPA, 2021). Prior to sampling, depth to water measurements will be used
to determine the static water level in each well. A submersible or peristaltic pump with
new, disposable tubing will be placed in the well so that the pump or tubing intake is located
at approximately the mid-point of the screened interval. The well will be purged at a flow
rate of approximately 0.5 liters per minute, or slower if drawdown in the well is observed
to exceed 0.33 feet from the static level. During purging, field parameters including: pH,
conductivity, temperature, oxidation reduction potential (ORP), turbidity and dissolved
oxygen will be measured utilizing a flow-through cell. Groundwater samples will be
collected after at least three sequential field parameter readings have stabilized to within
the limits specified in the USEPA procedure. If a groundwater monitoring well is purged
dry, the well will be allowed to recover to within 70%-75% of the original static water level
and a groundwater sample will be collected within 24-hours of the original purging. Field
sampling data will be recorded on an FSDS (Appendix B).
The groundwater samples will be placed directly into laboratory-provided glassware with
as little disturbance as possible. The samples for metals analyses will be field filtered
utilizing disposable 0.45-micron filters connected directly to the peristaltic pump tubing.
Groundwater samples will be labeled with a unique identification and delivered in an iced
cooler using chain-of-custody procedure to ChemTech-Ford in Salt Lake City, Utah, or
another approved laboratory that is a Utah certified analytical laboratory.
All purge water will be stored on-Site in USDOT-approved 55-gallon drum pending proper
off-Site disposal.
3.4.4.1 Laboratory Analyses
All groundwater samples will be collected with laboratory-provided containers, labeled
with a unique identification and delivered in an iced cooler using chain-of-custody
procedure to ChemTech-Ford in Salt Lake City, Utah, or another approved laboratory that
is a Utah certified analytical laboratory. All groundwater samples will be analyzed for
RCRA metals arsenic, barium, cadmium, chromium, lead, selenium, and silver by USEPA
Methods 6010B and 6020B and mercury by USEPA Method 7471, for cyanide by Standard
Method SM4500CN, for VOCs by USEPA Method 8260B, for SVOCs by USEPA
Method 8270C, for 1,4-dioxane by USEPA Method 8270 SIM, for PCBs by USEPA
Method 8082, for GRO, DRO, and ORO by USEPA Method 8015, for total dissolved
solids (TDS) by Standard Method 2540 C, and for PFAS by USEPA Method 1633.

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3.5 Contingency Sampling
All proposed sample locations are based on information available at the time this SCWP
was prepared. Based on observations during Site characterization field activities, the
sampling program may be refined to adapt to field conditions with such changes being
communicated to DERR.
3.6 Investigation Derived Waste
During soil assessment activities, IDW will be generated by the decontamination of the
sampling equipment and the exterior of all downhole equipment between borings,
groundwater sampling purge water, well development water, excess soil cuttings from each
direct-push and hollow-stem auger boring. All liquid and solid IDW will be placed in
USDOT-approved 55-gallon steel drums. Both the water and the soil cuttings will be
sampled to characterize the waste for disposal purposes.
Following receipt of laboratory analyses, the water will either be treated on-Site and
discharged under a general disposal permit, of will be transported off-Site to the
appropriate Utah licensed facility for proper treatment and/or disposal. The soil cuttings
will either be placed on-Site as clean fill or transported off-Site to the appropriate Utah
licensed facility for proper treatment and/or disposal.

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4 DATA EVALUATION AND REPORTING
The following section presents the proposed data evaluation and reporting for
implementing the SCWP.
4.1 Data Evaluation
All laboratory analytical results will be evaluated consistent with the data quality objectives
for data collection activities, the proposed analytical methods for the soil and groundwater
samples, and the methodologies for evaluating soil and groundwater sample results
presented in the QAPP (Hill West, 2022b), including a review of the precision, accuracy,
representativeness, completeness, comparability, and sensitivity (PARCCS) parameters.
For initial screening purposes, laboratory analytical results for samples collected during
Site characterization will be initially screened using current Residential and Industrial
USEPA RSLs and/or DERR ISLs for soil samples and USEPA MCLs and/or DERR ISLs
for groundwater samples. If USEPA MCLs or DERR ISLs are not established for
groundwater, the USEPA Tap Water RSL will be used. Site cleanup levels will be
established in the Remedial Action Plan. Data evaluation will include an analysis of
volatile contaminants in soil and groundwater for vapor intrusion. Groundwater vapor
intrusion will be evaluated using the USEPA Vapor Intrusion Screening Level (VISL)
calculator.
4.2 Reporting
A report summarizing the additional Site characterization will be prepared. Reporting will
include a discussion of field operations, deviations from the SCWP, data inconsistencies,
other significant operational details, and an interpretation of the soil and groundwater
sample results. The report will also include figures indicating the sample locations,
analytical summary tables comparing laboratory analytical results to appropriate USEPA
and Utah DEQ screening levels, copies of the laboratory analytical reports, FSDSs,
WDDSs, and field boring logs. The report will identify any data gaps and propose further
characterization to address those data gaps.

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REFERENCES
DERR, 1995. No Further Action Letter, Release Site EHFH, 1569 West North Temple,
Salt Lake City, Utah, Facility Identification No. 4001202 – Utah Department of
Environmental Quality (DEQ) through the Division of Environmental Response
and Remediation (DERR), July 3.
DERR, 2000. Draft Site Inspection Analytical Results Report for the South Temple Landfill
site (EPA ID# UT0001767318), Salt Lake City, Salt Lake County, Utah - DERR,
April 14.
EnviroSearch, 1994a. Subsurface Soil and Groundwater Investigation, Utah Power &
Light Service Center, 1569 West North Temple, Salt Lake City, Utah –
EnviroSearch International, April 15.
EnviroSearch, 1994b. Request for Site Closure of the UP&L Service Center, 1569 West
North Temple, Salt Lake City, Utah, Facility #4001202, Release Site EHFH –
EnviroSearch International, April 15.
Hill West, 2021. Subsurface Investigation Report, Salt Lake Service Center, 1569 West
North Temple Street, Salt Lake City, Utah – Hill West Environmental, LLC,
February 9.
Hill West, 2022a. Power District Redevelopment Project, Waste Management Plan , 1223
West North Temple Street, Salt Lake City, Utah, Facility ID No. 4002609, VCP ID
No. VCP-C119 - Hill West, July 20.
Hill West, 2022b. Power District Redevelopment Project – Sampling and Analysis &
Quality Assurance Project Plan, 1223 West North Temple Street, Salt Lake City,
Utah, VCP ID No. VCP-C119 - Hill West, August 2.
JBR, 1996. Subsurface Investigation Report, Utah Power North Temple Office, Salt Lake
City, Utah – JBR Environmental Consultants, March 11.
PacifiCorp, 1997. Corrective Action Implementation Report, Utah Power Automotive
Center, 1407 West North Temple, Salt Lake City, Utah, Release Site EGEI –
PacifiCorp Environmental Remediation Company, August 7.
Tetra Tech, 2023a. Phase II Environmental Site Assessment – Rocky Mountain Power Site
Block 1, 1569 West North Temple Street, Salt Lake City, Utah – Tetra Tech,
May 15.
Tetra Tech, 2023b. Phase II Environmental Site Assessment – Rocky Mountain Power Site
Block 2, 1407 West North Temple Street, Salt Lake City, Utah – Tetra Tech,
May 15.

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USEPA, 2021. Standard Operating Procedure for Low-Stress (Low Flow)/Minimal
Drawdown Ground-Water Sample Collection, United States Environmental
Protection Agency. November.

TABLES
Table 1
Summary of Soil Analytical Results - RCRA Metals and Cyanide
Mercury Cyanide
USEPA Method 7471 Method SM4500CN
(mg/kg)(mg/kg)
Boring ID Sample ID Soil Type
Sample
Depth
(ft bgs)
Date
Sampled Ar
s
e
n
i
c
Ba
r
i
u
m
Ca
d
m
i
u
m
Ch
r
o
m
i
u
m
Le
a
d
Se
l
e
n
i
u
m
Si
l
v
e
r
Me
r
c
u
r
y
Cy
a
n
i
d
e
NTO-1 NTO-01 @ 8' - 9'native 8 - 9 12/14/20 9.02 150 0.729 28.7 29.1 <2.47 0.378 0.0498 <0.0729
NTO-4 NTO-04 @ 9'native 9 12/14/20 12.3 237 0.909 31.4 28.4 <3.34 <0.501 <0.0676 <0.101
NTO-06 @ 8' - 9'native 8 - 9 12/14/20 2.45 27.0 <0.575 <11.5 5.45 <2.30 <0.345 <0.0411 <0.0688
NTO-06 @ 14.5'native 14.5 12/14/20 -- -- -- -- -- -- -- -- --
NTO-8 NTO-08 @ 9' - 10'native 9 - 10 12/15/20 4.23 84.3 <0.642 17.2 12.2 <2.57 <0.385 <0.0430 <0.0775
NTO-09 @ 1'fill 1 12/15/20
NTO-10 @ 1.2'fill 1.2 12/15/20
NTO-12 NTO-12 @ 8' - 10'native 8 - 10 12/15/20 7.80 44.5 <0.607 <12.1 5.53 <2.43 <0.364 <0.0427 0.137
NTO-14 NTO-14 @ 9' BGS native 9 12/16/20 29.5 208 <0.686 41.6 45.2 <2.74 <0.412 0.0910 <0.0826
NTO-18 @ 1.2' BGS fill 1.2 12/16/20 27.0 233 1.82 28.6 135 <2.44 0.475 <0.0409 --
NTO-18 @ 7' - 9'native 7 - 9 12/16/20 3.08 32.4 <0.577 <11.5 5.38 <2.31 <0.346 <0.0408 <0.0711
NTO-19 NTO-19 @ 9' - 10'native 9 - 10 12/15/20 4.12 91.0 <0.631 19.6 26.9 <2.53 <0.379 <0.0505 0.0968
NTO-20 NTO-20 native 8 - 10 12/15/20 2.90 42.6 <0.615 18.0 9.00 7.52 <0.369 <0.0498 <0.0732
NTO-21 NTO-21 fill 0.5 - 1.0 12/15/20 -- -- -- -- -- -- -- -- --
NTO-22 @ 1.5' - 2.5'fill 1.5 - 2.5 12/16/20 14.7 145 0.868 21.7 53.3 <2.28 0.374 0.345 <0.0702
NTO-22 @ 9' BGS native 9 12/16/20 4.55 120 <0.578 <11.6 11.1 <2.31 <0.347 <0.0407 <0.0709
TT-1-1 TT-1-1 native 5 12/12/23 5.83 163 <0.615 20.4 22.7 <2.46 <1.23 <0.0492 <0.308
TT-1-2 TT-1-2 native 7 12/12/23 13.6 104 1.09 16.0 56.6 <2.48 <1.24 <0.0495 <0.309
TT-1-3 TT-1-3 native 7 12/12/23 11.8 113 <0.608 12.6 20.2 <2.43 <1.22 <0.0486 <0.304
TT-1-4 TT-1-4 native 5 12/12/23 20.4 319 5.28 19.8 815 3.93 <1.18 1.04 0.939
TT-1-5 TT-1-5 native 7.5 12/11/23 4.99 69.2 <0.620 10.3 11.9 <2.48 <1.24 <0.0496 --
TT-1-6 TT-1-6 native 4.5 12/11/23 <2.55 148 <0.638 16.0 22.8 <2.55 <1.28 <0.0510 --
TT-1-7 TT-1-7 native 7 12/11/23 3.06 97.8 <0.608 11.7 14.8 <2.43 <1.22 <0.0487 --
TT-2-1 TT-2-1 native 8 12/13/23 11.1 349 0.977 22.9 302 <2.33 <1.17 0.0788 0.432
TT-2-2 TT-2-2 native 5 12/13/23 10.3 97.9 <0.610 14.1 19.3 <2.44 <1.22 <0.0488 <0.305
TT-2-3 TT-2-3 native 5 12/13/23 9.79 83.6 <0.607 12.9 13.6 <2.43 <1.21 <0.0485 <0.303
TT-2-4 TT-2-4 native 5 12/13/23 7.08 157 1.18 26.3 60.8 <2.51 <1.25 0.0850 <0.313
TT-2-5 TT-2-5 native 4 12/13/23 11.6 105 <0.587 16.1 23.6 <2.35 <1.17 <0.0470 <0.293
TT-2-6 TT-2-6@2FT native 2 12/15/23 45.8 105 5.84 14.7 324 <2.32 <1.16 0.227 <0.290
TT-2-7 TT-2-7@2FT native 2 12/15/23 117 73.4 <0.585 9.86 44.9 <2.34 <1.17 0.0780 <0.293
NTO-6
NTO-18
NTO-22
17.9 12.2
NTO-9 &
NTO-10 --
RCRA Metals
USEPA Methods 6010B and 6020B
(mg/kg)
163 1,540 20.9 31.8 <0.03368,380
Soil Analytical Summary Table - metals, rev2.xlsx, Table 1 Page 1 of 2
Power District Redevelopment Project
VCP Areas B, C, and D
1569 West North Temple Street
Salt Lake City, Utah
Table 1
Summary of Soil Analytical Results - RCRA Metals and Cyanide
Mercury Cyanide
USEPA Method 7471 Method SM4500CN
(mg/kg)(mg/kg)
Boring ID Sample ID Soil Type
Sample
Depth
(ft bgs)
Date
Sampled Ar
s
e
n
i
c
Ba
r
i
u
m
Ca
d
m
i
u
m
Ch
r
o
m
i
u
m
Le
a
d
Se
l
e
n
i
u
m
Si
l
v
e
r
Me
r
c
u
r
y
Cy
a
n
i
d
e
RCRA Metals
USEPA Methods 6010B and 6020B
(mg/kg)
TT-2-8 TT-2-8@6.5FT native 6.5 12/14/23 89.2 41.7 <0.581 6.52 7.84 <2.32 <1.16 <0.0465 <0.290
TT-2-9 TT-2-9@10FT native 10 12/14/23 5.67 111 <0.698 16.4 25.6 <2.79 <1.40 <0.0558 <0.349
TT-2-10 TT-2-10@7FT native 7 12/14/23 6.43 52.8 <0.560 25.5 22.7 <2.24 <1.12 <0.0448 <0.280
TT-2-11 TT-2-11@5FT native 5 12/14/23 6.06 98.5 <0.580 12.9 21.7 <2.32 <1.16 <0.0464 <0.290
USEPA RSL - Residential Soil 0.68 15,000 7.1 120,000 200 390 390 11 23
USEPA RSL - Industrial Soil 3.0 220,000 100 1,800,000 800 5,800 5,800 46 150
Notes:
USEPA - United States Environmental Protection Agency
mg/kg - Milligrams per kilogram
ft bgs - Feet below ground surface
-- - Not analyzed
< - Not reported at, or above, the indicated laboratory method reporting limit
Shaded value was reported above the laboratory reporting limit
Bold Values - Reported concentration exceeds USEPA Residential RSL
Bold Underlined Values - Reported concentration exceeds USEPA Residential and Industrial Soil RSL
NE - Not established
RSL - Regional Screening Level, value provided in the RSL Summary Table, dated November 2024
The samples collected from borings NTO-9 and NTO-10 were composited by the laboratory.
Soil Analytical Summary Table - metals, rev2.xlsx, Table 1 Page 2 of 2
Power District Redevelopment Project
VCP Areas B, C, and D
1569 West North Temple Street
Salt Lake City, Utah
Table 2
Summary of Soil Analytical Results - VOCs, GRO, DRO, ORO, Oil and Grease, and PCBs
Oil & Grease PCBs
USEPA Method
1664A
USEPA
Method 8082
(mg/kg)(mg/kg)
Boring ID Sample ID Soil Type
Sample
Depth
(ft bgs)
Date
Sampled Ac
e
t
o
n
e
Cy
c
l
o
h
e
x
a
n
e
Is
o
p
r
o
p
y
l
b
e
n
z
e
n
e

(C
u
m
e
n
e
)
Na
p
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t
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a
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s
,

T
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t
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To
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Ga
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l
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e

R
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Or
g
a
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c
s

(
G
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O
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(D
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R
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O
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s

(O
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G
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Po
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i
n
a
t
e
d

Bi
p
h
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n
y
l
s

(
P
C
B
s
)
NTO-1 NTO-01 @ 8' - 9' native 8 - 9 12/14/20 0.017 0.0204 <0.00247 <0.00247 0.00478 0.0395 -- -- -- ND ND
NTO-4 NTO-04 @ 9' native 9 12/14/20 0.017 0.0103 <0.00335 <0.00335 <0.00335 <0.00335 -- -- -- ND ND
NTO-06 @ 8' - 9' native 8 - 9 12/14/20 <0.0114 <0.00228 <0.00228 <0.00569 <0.00228 <0.00228 -- -- -- ND ND
NTO-06 @ 14.5' native 14.5 12/14/20 -- -- -- -- -- -- --1,040 -- -- --
NTO-8 NTO-08 @ 9' - 10' native 9 - 10 12/15/20 0.0203 <0.00258 <0.00258 <0.00258 0.00378 0.00431 -- -- -- ND ND
NTO-09 @ 1' fill 1 12/15/20
NTO-10 @ 1.2' fill 1.2 12/15/20
NTO-12 NTO-12 @ 8' - 10' native 8 - 10 12/15/20 0.0167 <0.00247 <0.00247 <0.00247 0.00275 0.00388 -- -- -- ND ND
NTO-14 NTO-14 @ 9' BGS native 9 12/16/20 0.030 <0.00277 <0.00277 <0.00277 0.00390 0.0050 -- -- -- ND ND
NTO-18 @ 1.2' BGS fill 1.2 12/16/20 -- -- -- -- -- -- -- 117 -- ND ND
NTO-18 @ 7' - 9' native 7 - 9 12/16/20 <0.0120 <0.00239 <0.00239 <0.00239 <0.00239 <0.00239 -- -- -- ND ND
NTO-19 NTO-19 @ 9' - 10' native 9 - 10 12/15/20 0.017 <0.00253 <0.00253 <0.00253 0.00568 0.00726 -- -- -- ND ND
NTO-20 NTO-20 native 8 - 10 12/15/20 0.020 <0.00247 <0.00247 <0.00247 <0.00247 0.00270 -- -- -- ND ND
NTO-21 NTO-21 fill 0.5 - 1.0 12/15/20 -- -- -- -- -- -- -- -- -- -- --
NTO-22 @ 1.5' - 2.5' fill 1.5 - 2.5 12/16/20 0.0958 <0.00234 0.0101 <0.00234 0.01284 <0.00234 -- 171 -- ND ND
NTO-22 @ 9' BGS native 9 12/16/20 <0.0118 <0.00236 <0.00236 <0.00236 <0.00236 <0.00236 -- -- -- ND ND
NTO-24 NTO-24 West of NTO-06 native 14.5 03/18/21 -- -- -- -- -- -- -- <25.1 -- -- --
NTO-25 NTO-25 South of NTO-06 native 13 - 14 03/18/21 -- -- -- -- -- -- -- <25.1 -- -- --
NTO-26 NTO-26 East of NTO-06 native 13 - 14 03/18/21 -- -- -- -- -- -- -- <23.5 -- -- --
NTO-27 NTO-27 North of NTO-06 native 14 - 15 03/18/21 -- -- -- -- -- -- -- <23.4 -- -- --
NTO-28 NTO-28 NW 6' from NTO-06 native 14 - 15 03/18/21 -- -- -- -- -- -- -- <24.8 -- -- --
NTO-29 NTO-29 SE 8' from NTO-06 native 14 - 15 03/18/21 -- -- -- -- -- -- -- 35.4 -- -- --
TT-1-1 TT-1-1 native 5 12/12/23 <0.0731 -- <0.00365 <0.0183 <0.00950 <0.00731 <0.123 <4.92 <4.92 -- ND
TT-1-2 TT-1-2 native 7 12/12/23 <0.0739 -- <0.00369 <0.0185 <0.00960 <0.00739 <0.124 <4.95 16.6 -- ND
TT-1-3 TT-1-3 native 7 12/12/23 <0.0716 -- <0.00358 <0.0179 <0.00931 <0.00716 <0.122 <4.86 27.5 -- ND
TT-1-4 TT-1-4 native 5 12/12/23 0.128 -- <0.00340 0.0299 <0.00883 <0.00680 <0.118 <94.3 500 -- ND
TT-1-5 TT-1-5 native 7.5 12/11/23 <0.0740 -- <0.00370 <0.0185 <0.00963 <0.00740 <0.124 <4.96 12.6 -- --
Volatile Organic Compounds (VOCs)
USEPA Method 8260B
(mg/kg)
NTO-22
NTO-6
-- --
NTO-18
NTO-9 and
NTO-10 -- -- -- --
Petroleum Hydrocarbons
USEPA Method 8015
(mg/kg)
------ -- --
Soil Analytical Summary Table - VOCs, GRO, DRO, etc, rev2.xlsx, Table 2 Page 1 of 2
Power District Redevelopment Project
VCP Areas B, C, and D
1569 West North Temple Street
Salt Lake City, Utah
Table 2
Summary of Soil Analytical Results - VOCs, GRO, DRO, ORO, Oil and Grease, and PCBs
Oil & Grease PCBs
USEPA Method
1664A
USEPA
Method 8082
(mg/kg)(mg/kg)
Boring ID Sample ID Soil Type
Sample
Depth
(ft bgs)
Date
Sampled Ac
e
t
o
n
e
Cy
c
l
o
h
e
x
a
n
e
Is
o
p
r
o
p
y
l
b
e
n
z
e
n
e

(C
u
m
e
n
e
)
Na
p
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t
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a
l
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Xy
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s
,

T
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t
a
l
To
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u
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Ga
s
o
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i
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e

R
a
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Or
g
a
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c
s

(
G
R
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R
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O
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(D
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a
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Bi
p
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l
s

(
P
C
B
s
)
Volatile Organic Compounds (VOCs)
USEPA Method 8260B
(mg/kg)
Petroleum Hydrocarbons
USEPA Method 8015
(mg/kg)
TT-1-6 TT-1-6 native 4.5 12/11/23 <0.0776 -- <0.00388 <0.0194 <0.0101 <0.00776 <0.128 <5.10 <5.10 -- --
TT-1-7 TT-1-7 native 7 12/11/23 <0.0717 -- <0.00359 <0.0179 <0.00932 <0.00717 <0.122 <4.87 <4.87 -- --
TT-2-1 TT-2-1 native 8 12/13/23 -- -- -- -- -- -- -- -- -- -- --
TT-2-2 TT-2-2 native 5 12/13/23 -- -- -- -- -- -- -- -- -- -- --
TT-2-3 TT-2-3 native 5 12/13/23 -- -- -- -- -- -- -- -- -- -- --
TT-2-4 TT-2-4 native 5 12/13/23 -- -- -- -- -- -- -- -- -- -- --
TT-2-5 TT-2-5 native 4 12/13/23 -- -- -- -- -- -- -- -- -- -- --
TT-2-6 TT-2-6@2FT native 2 12/15/23 -- -- -- -- -- -- -- -- -- -- --
TT-2-7 TT-2-7@2FT native 2 12/15/23 -- -- -- -- -- -- -- -- -- -- --
TT-2-8 TT-2-8@6.5FT native 6.5 12/14/23 <0.0661 -- <0.00331 <0.0165 <0.00860 <0.00661 <0.116 26.0 --8,180 --
TT-2-9 TT-2-9@10FT native 10 12/14/23 <0.0897 -- <0.00448 <0.0224 <0.0117 <0.00897 <0.140 10.5 -- 191 --
TT-2-10 TT-2-10@7FT native 7 12/14/23 <0.0619 -- <0.00310 <0.0155 <0.00805 <0.00619 <0.112 290 --2,160 --
TT-2-11 TT-2-11@5FT native 5 12/14/23 <0.0660 -- <0.00330 <0.0165 <0.00859 <0.00660 <0.116 <4.64 -- <116 -- --
USEPA RSL - Residential Soil 70,000 6,500 1,900 2.0 580 4,900 NE NE NE NE Varies
USEPA RSL - Industrial Soil 1,100,000 27,000 9,900 8.6 2,500 47,000 NE NE NE NE Varies
DEQ Initial Screening Levelsa NE NE NE 51 142 9 150 500 500 1,000 Varies
Notes:
USEPA - United States Environmental Protection Agency -- - Not analyzed
mg/kg - Milligrams per kilogram < - Not reported at, or above, the indicated laboratory method reporting limit
ft bgs - Feet below ground surface ND - Not detected, all analytes were not reported at, or above their reporting limit
Shaded value was reported above the laboratory reporting limit
Bold Values - Reported concentration exceeds USEPA RSL (Residental or Industrial) or DERR ISL
Bold Underlined Values - Reported concentration exceeds USEPA Residenital and Industrial Soil RSL
NE - Not established
RSL - Regional Screening Level, value provided in the RSL Summary Table, dated November 2024
a - Utah Department of Environmental Response and Remediation (DERR) Initial Screening Level (ISL), November 1, 2005
The samples collected from borings NTO-9 and NTO-10 were composited by the laboratory.
Soil Analytical Summary Table - VOCs, GRO, DRO, etc, rev2.xlsx, Table 2 Page 2 of 2
Power District Redevelopment Project
VCP Areas B, C, and D
1569 West North Temple Street
Salt Lake City, Utah
Table 3
Summary of Soil Analytical Results - SVOCs
Boring ID Sample ID Soil Type
Sample
Depth
(ft bgs)
Date
Sampled Be
n
z
o
(
a
)
a
n
t
h
r
a
c
e
n
e
Be
n
z
o
(
b
)
f
l
u
o
r
a
n
t
h
e
n
e
Be
n
z
o
(
a
)
p
y
r
e
n
e
Ch
r
y
s
e
n
e
Fl
u
o
r
a
n
t
h
e
n
e
Ph
e
n
a
n
t
h
r
e
n
e
Py
r
e
n
e
A
l
l

O
t
h
e
r

S
e
m
i
-
vo
l
a
t
i
l
e

O
r
g
a
n
i
c

Co
m
p
o
u
n
d
s
NTO-1 NTO-01 @ 8' - 9'native 8 - 9 12/14/20 <0.417 <0.417 <0.417 <0.417 <0.417 <0.417 <0.417 ND
NTO-4 NTO-04 @ 9'native 9 12/14/20 <0.570 <0.570 <0.570 <0.570 <0.570 <0.570 <0.570 ND
NTO-06 @ 8' - 9'native 8 - 9 12/14/20 <0.390 <0.390 <0.390 <0.390 <0.390 <0.390 <0.390 ND
NTO-06 @ 14.5'native 14.5 12/14/20 -- -- -- -- -- -- -- --
NTO-8 NTO-08 @ 9' - 10'native 9 - 10 12/15/20 <0.436 <0.436 <0.436 <0.436 <0.436 <0.436 <0.436 ND
NTO-09 @ 1'fill 1 12/15/20
NTO-10 @ 1.2'fill 1.2 12/15/20
NTO-12 NTO-12 @ 8' - 10'native 8 - 10 12/15/20 <0.418 <0.418 <0.418 <0.418 <0.418 <0.418 <0.418 ND
NTO-14 NTO-14 @ 9' BGS native 9 12/16/20 <0.470 <0.470 <0.470 <0.470 <0.470 <0.470 <0.470 ND
NTO-18 @ 1.2' BGS fill 1.2 12/16/20 -- -- -- -- -- -- -- --
NTO-18 @ 7' - 9'native 7 - 9 12/16/20 <0.400 <0.400 <0.400 <0.400 <0.400 <0.400 <0.400 ND
NTO-19 NTO-19 @ 9' - 10'native 9 - 10 12/15/20 <0.426 <0.426 <0.426 <0.426 <0.426 <0.426 <0.426 ND
NTO-20 NTO-20 native 8 - 10 12/15/20 <0.420 <0.420 <0.420 <0.420 <0.420 <0.420 <0.420 ND
NTO-21 NTO-21 fill 0.5 - 1.0 12/15/20 -- -- -- -- -- -- -- --
NTO-22 @ 1.5' - 2.5'fill 1.5 - 2.5 12/16/20 <0.397 <0.397 <0.397 <0.397 <0.397 <0.397 <0.397 ND
NTO-22 @ 9' BGS native 9 12/16/20 <0.398 <0.398 <0.398 <0.398 <0.398 <0.398 <0.398 ND
NTO-24 NTO-24 West of NTO-06 native 14.5 03/18/21 -- -- -- -- -- -- -- --
NTO-25 NTO-25 South of NTO-06 native 13 - 14 03/18/21 -- -- -- -- -- -- -- --
NTO-26 NTO-26 East of NTO-06 native 13 - 14 03/18/21 -- -- -- -- -- -- -- --
NTO-27 NTO-27 North of NTO-06 native 14 - 15 03/18/21 -- -- -- -- -- -- -- --
NTO-28 NTO-28 NW 6' from NTO-06 native 14 - 15 03/18/21 -- -- -- -- -- -- -- --
NTO-29 NTO-29 SE 8' from NTO-06 native 14 - 15 03/18/21 -- -- -- -- -- -- -- --
TT-1-1 TT-1-1 native 5 12/12/23 <0.0410 <0.0410 <0.0410 <0.0410 <0.0410 <0.0410 <0.0410 ND
TT-1-2 TT-1-2 native 7 12/12/23 <0.0412 <0.0412 <0.0412 <0.0412 <0.0412 <0.0412 <0.0412 ND
TT-1-3 TT-1-3 native 7 12/12/23 <0.0405 <0.0405 <0.0405 <0.0405 <0.0405 <0.0405 <0.0405 ND
TT-1-4 TT-1-4 native 5 12/12/23 0.0487 0.0937 0.0639 0.0646 0.0613 0.0434 0.0769 ND
TT-1-5 TT-1-5 native 7.5 12/11/23 -- -- -- -- -- -- -- --
NTO-22
NTO-6
NTO-18
NTO-9 and
NTO-10 -------- ----
Semi-volatile Organic Compounds
USEPA Method 8270
(mg/kg)
-- --
Soil Analytical Summary Table - SVOCs.xlsx, Table 2 Page 1 of 2
Power District Redevelopment Project
VCP Areas B, C, and D
1569 West North Temple Street
Salt Lake City, Utah
Table 3
Summary of Soil Analytical Results - SVOCs
Boring ID Sample ID Soil Type
Sample
Depth
(ft bgs)
Date
Sampled Be
n
z
o
(
a
)
a
n
t
h
r
a
c
e
n
e
Be
n
z
o
(
b
)
f
l
u
o
r
a
n
t
h
e
n
e
Be
n
z
o
(
a
)
p
y
r
e
n
e
Ch
r
y
s
e
n
e
Fl
u
o
r
a
n
t
h
e
n
e
Ph
e
n
a
n
t
h
r
e
n
e
Py
r
e
n
e
A
l
l

O
t
h
e
r

S
e
m
i
-
vo
l
a
t
i
l
e

O
r
g
a
n
i
c

Co
m
p
o
u
n
d
s
Semi-volatile Organic Compounds
USEPA Method 8270
(mg/kg)
TT-1-6 TT-1-6 native 4.5 12/11/23 -- -- -- -- -- -- -- --
TT-1-7 TT-1-7 native 7 12/11/23 -- -- -- -- -- -- -- --
TT-2-1 TT-2-1 native 8 12/13/23 -- -- -- -- -- -- -- --
TT-2-2 TT-2-2 native 5 12/13/23 -- -- -- -- -- -- -- --
TT-2-3 TT-2-3 native 5 12/13/23 -- -- -- -- -- -- -- --
TT-2-4 TT-2-4 native 5 12/13/23 -- -- -- -- -- -- -- --
TT-2-5 TT-2-5 native 4 12/13/23 -- -- -- -- -- -- -- --
TT-2-6 TT-2-6@2FT native 2 12/15/23 -- -- -- -- -- -- -- --
TT-2-7 TT-2-7@2FT native 2 12/15/23 -- -- -- -- -- -- -- --
TT-2-8 TT-2-8@6.5FT native 6.5 12/14/23 <0.0387 <0.0387 <0.0387 <0.0387 <0.0387 <0.0387 <0.0387 ND
TT-2-9 TT-2-9@10FT native 10 12/14/23 <0.465 <0.465 <0.465 <0.465 <0.465 <0.465 <0.465 ND
TT-2-10 TT-2-10@7FT native 7 12/14/23 <0.187 <0.187 <0.187 <0.187 <0.187 0.209 0.639 ND
TT-2-11 TT-2-11@5FT native 5 12/14/23 <0.0386 <0.0386 <0.0386 <0.0386 <0.0386 <0.0386 <0.0386 ND
USEPA RSL - Residential Soil 1.1 1.1 5.7 110 2,400 NE 1,800 Varies
USEPA RSL - Industrial Soil 21 21 73 2,100 30,000 NE 23,000 Varies
DEQ Initial Screening Levelsa NE NE NE NE NE NE NE Varies
Notes:
USEPA - United States Environmental Protection Agency
mg/kg - Milligrams per kilogram
ft bgs - Feet below ground surface
Shaded value was reported above the laboratory reporting limit
Bold Values - Reported concentration exceeds USEPA RSL (Residental or Industrial) or DERR ISL
Bold Underlined Values - Reported concentration exceeds USEPA Residenital and Industrial Soil RSL
NE - Not established
RSL - Regional Screening Level, value provided in the RSL Summary Table, dated November 2024
a - Utah Department of Environmental Response and Remediation (DERR) Initial Screening Level (ISL), November 1, 2005
The samples collected from borings NTO-9 and NTO-10 were composited by the laboratory.
Soil Analytical Summary Table - SVOCs.xlsx, Table 2 Page 2 of 2
Power District Redevelopment Project
VCP Areas B, C, and D
1569 West North Temple Street
Salt Lake City, Utah
Table 4
Summary of Soil Analytical Results - BTUs
Boring ID Sample ID Soil Type
Sample Depth
(ft bgs)
Date
Sampled
BTUs
Method D240
(BTUs/lb)
NTO-21 NTO-21 fill 0.5 - 1.0 12/15/20 11,600 Notes:
BTUs - British Thermal Units
BTUs/lb - British Thermal Units per pound
Soil Analytical Summary Table - BTUs, rev2.xls, Table 1 Page 1 of 1
Power District Redevelopment Project
VCP Areas B, C, and D
1569 West North Temple Street
Salt Lake City, Utah
Table 5
Summary of Groundwater Analytical Results - RCRA Metals, Cyanide, GRO, DRO, ORO, Oil and Grease, VOCs, SVOCs, and PCBs
Mercury
USEPA
Method 7470
Cyanide
USEPA
Method E335.4
Oil & Grease
USEPA
Method 1664A
SVOCs
USEPA Method
8270D
PCBs
USEPA
Method 8082
(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)
Boring ID Sample ID
Date
Sampled Ar
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NTO-1 NTO-01W 12/14/20 90.9 216 1.56 52.3 72.0 6.38 <2.00 <0.0900 21.1 -- -- -- -- <2.00 <2.00 ND ND ND
NTO-6 NTO-06W 12/14/20 13.6 144 0.974 75.9 21.3 <2.00 <2.00 <0.0900 <5.00 -- -- -- -- <2.00 <2.00 ND ND ND
NTO-12 NTO-12W 12/15/20 <4.00 115 <0.700 <40.0 4.09 <2.00 <2.00 <0.0900 <5.00 -- -- -- -- <2.00 <2.00 ND ND ND
NTO-18 NTO-18W 12/16/20 9.06 117 <0.700 <40.0 <2.00 <2.00 <2.00 <0.0900 95 -- -- -- -- <2.00 <2.00 ND ND ND
NTO-22 NTO-22W 12/16/20 107 211 <0.700 45.8 48.0 8.40 <2.00 <0.0900 <5.00 -- -- -- -- <2.00 <2.00 ND ND ND
TT-1-1 TT-1-1 12/12/23 22.2 161 <2.00 69.5 86.2 <10.0 <5.00 <0.200 <5.00 <0.100 <0.100 0.132 -- <1.00 <3.00 ND -- ND
TT-1-2 TT-1-2 12/12/23 31.6 174 3.63 95.2 152 15.0 <5.00 <0.200 <5.00 <0.100 0.320 0.238 -- <1.00 <3.00 ND -- ND
TT-1-3 TT-1-3 12/12/23 90.9 120 11.2 80.7 352 <10.0 <5.00 0.497 <5.00 <0.100 0.130 0.341 -- <1.00 <3.00 ND -- ND
TT-1-4 TT-1-4 12/12/23 26.5 98.6 <2.00 14.2 18.4 <10.0 <5.00 <0.200 <5.00 <0.100 0.325 0.227 -- <1.00 <3.00 ND -- ND
TT-1-5 TT-1-5 12/11/23 71.6 111 2.57 <10.0 <6.00 <10.0 <5.00 <0.200 -- <0.100 <0.100 0.192 -- 1.64 11.3 ND -- ND
TT-1-6 TT-1-6 12/11/23 20.5 58.1 <2.00 <10.0 23.4 <10.0 <5.00 <0.200 -- <0.100 <0.200 0.406 -- <1.00 <3.00 ND -- ND
TT-1-7 TT-1-7 12/11/23 12.2 122 <2.00 31.4 91.5 <10.0 <5.00 0.248 -- <0.100 0.463 0.257 -- <1.00 <3.00 ND -- ND
TT-2-8 TT-2-8 12/14/23 176 1,270 7.13 285 573 29.8 <5.00 <0.200 <5.00 <0.100 0.262 -- <5.68 <1.00 <3.00 ND ND ND
TT-2-9 TT-2-9 12/14/23 82.9 293 <2.00 43.7 62.6 23.0 <5.00 <0.200 <5.00 <0.100 0.111 -- <5.44 <1.00 <3.00 ND ND ND
TT-2-10 TT-2-10 12/14/23 47.0 537 2.29 43.8 204 <10.0 <5.00 <0.200 <5.00 <0.100 0.337 -- <5.68 <1.00 <3.00 ND ND ND
TT-2-11 TT-2-11 12/14/23 41.3 318 <2.00 51.1 105 <10.0 <5.00 <0.200 <5.00 <0.100 0.294 -- <5.44 <1.00 <3.00 ND ND ND
10 2,000 5.0 100 15 50 NE 2.0 200 NE NE NE NE 700 10,000 Varies Varies Varies
0.052 3,800 1.8 NE 15 100 94 0.63 1.5 NE NE NE NE 1.5 190 Varies Varies Varies
NE NE NE NE NE NE NE NE NE 1 1 10 10 700 10,000 Varies Varies Varies
Notes:
USEPA - United States Environmental Protection Agency VOCs - Volatile Organic Compounds
mg/L - Micrograms per liter SVOCs - Semi-volatile Organic Compounds
ND - Not detected, all analytes were not reported at, or above their method reporting limit PCBs - Polychlorinated Biphenyls
NE - Not Established mg/L - Milligrams per liter
< - Not reported at, or above, the indicated laboratory method reporting limit
Shaded value was reported above the laboratory reporting limit
Bold Values - Reported concentration exceeds USEPA RSL Screening Level
Bold and Underlined Values - Reported concentration exceeds USEPA MCL, USEPA RSL, and DERR ISL (if applicable)
RSL - Regional Screening Level, value provided in the RSL Summary Table, dated November 2024
MCL - Maximum Contaminant Level
a - Utah Department of Environmental Response and Remediation (DERR) Initial Screening Level (ISL), November 1, 2005
DERR Initial Screening Levelsa
USEPA RSL - Tap Water Screening Level
Volatile Organic
Compounds
USEPA Method 6020B
(mg/L)
Petroleum Hydrocarbons
USEPA Method 8015
(mg/L)
USEPA MCL
RCRA Metals
USEPA Methods 6020B
(mg/L)
GW Analytical Summary Table, rev2.xlsx, Table 2 Page 1 of 1
Power District Redevelopment Project
VCP Areas B, C, and D
1569 West North Temple Street
Salt Lake City, Utah

FIGURES
Power District Redevelopment
Project Boundary
LEGEND
SITE LOCATION MAP
FIGURE TITLE
DOCUMENT TITLE
CLIENT
LOCATION
PROJECT NUMBER
DATE
AS SHOWNSCALE
DJLDESIGNED BY
CDAPPROVED BY
SRMDRAWN BY
FIGURE NUMBER
1
N
0 4,0002,000
SCALE FEET
U.S.G.S. 7.5 MINUTE TOPOGRAPHIC QUADRANGLE
SALT LAKE CITY, UT (2020)
SOURCE:
Site
UTAH
Power District
Redevelopment Project
2/19/25
ROCKY MOUNTAIN POWER 2064-0034
POWER DISTRICT REDEVELOPMENT PROJECT –
SITE CHARACTERIZATION WORK PLAN - VCP AREA 'B'
1569 WEST NORTH TEMPLE STREET
SALT LAKE CITY, UTAH
7963 Douglas Dr
Park City, UT 84098
Phone: [phone]
www.hillwestut.com
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Environmental
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West North Temple Street
Lincoln
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South Temple Street
Water
Intake
Dam
Jo
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R
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VCP AREA 'D'
VCP AREA 'A'
LEGEND
Power District Redevelopment Project Boundary
Approximate Site Boundary
GOOGLE EARTH (2023)IMAGE SOURCE:
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2/19/25
PROJECT NUMBER
DATE
AS SHOWNSCALE
DJLDESIGNED BY
CDAPPROVED BY
SRMDRAWN BY
FIGURE NUMBER
2064-0034
2
N
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SCALE FEET
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Phone: [phone]
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LEGEND
NTO-21
Power District Redevelopment
Project Boundary
Approximate Site Boundary
Soil Boring, December 2020
NTO-24 Soil Boring, March 2021
Monitoring Well, ABF Freight
Monitoring Well,1993
Decommissioned Monitoring Well
MW-1
MW-3
MW-1
Approximate Historical Coal Storage Area
Boundary
Soil Boring with Temporary Water Well,
Tetra Tech December 2023
TT-1-5
Groundwater Well, Tetra Tech December 2023TT-1-4
Soil Boring, Tetra Tech December 2023TT-2-2
Monitoring WellMW-8
West North Temple Street
Lincoln High
w
a
y
Re
d
w
o
o
d

R
o
a
d
Railro
a
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South Temple Street
NTO-5 NTO-4
NTO-7
NTO-8
NTO-9
NTO-10
NTO-11
NTO-12
NTO-13 NTO-14
NTO-3 NTO-1NTO-2
NTO-16 NTO-17
NTO-15
NTO-18
NTO-19
NTO-20
NTO-21
NTO-23
NTO-25
NTO-29
NTO-26
NTO-27
NTO-6
W-27A
W-22 W-24
W-11
W-2
W-15
W-3
W-4
W-26
W-25
W-19
W-20
W-21
W-9
W-23
W-13
HI-SW HI-SE
HI-NW
South Temple Street
MW-3
MW-1
MW-7
MW-K
MW-L
MW-I
MW-J
MW-E
MW-B
MW-N
MW-M
MW-F
MW-G
MW-H
Loading Dock
Truck
Maint.
Bldg.
Fueling
Bldg.
Shed
FORMER ABF FREIGHT
Remediation
Building
Love's
Travel
Stop
Former
Hotel
Airport
Parking
MW-2 MW-6
MW-5
MW-3
Former Dispenser IslandVCP AREA 'C'
VCP AREA 'B'
VCP AREA 'D'
Historical Coal
Storage Area
MW-4
MW-1
TT-1-1
TT-1-3
TT-1-6
TT-1-5
TT-1-7
TT-1-4
TT-1-2
TT-2-11
TT-2-8
TT-2-2
TT-2-3
TT-2-4
TT-2-6
TT-2-7
TT-2-9
TT-2-10
NTO-22
Former Waste Oil UST
(Decommissioned 1990)
Operations and
Maintenance Building
Automotive
Center
Building
MW-1
MW-4MW-2
MW-9
MW-10
MW-8
MW-7
Former Excavation Boundary
MW-13
MW-12
MW-14
Former Gasoline UST
(Decommissioned 1986)
MW-6
MW-3
10,000-Gal
Diesel UST
Former Gasoline/Diesel UST
(Decommissioned 1993)
Former Gasoline/Diesel USTs (Decommissioned 1990)
Approximate Limit of Former Excavation
Former Gasoline USTs (Decommissioned 1993)
2,000-Gal Diesel UST
(Decommissioned 1990)
42" Diameter Abatement Canal
Former Excavation Boundary
NTO-24
NTO-28
Maintenance
Building
MW-2
TT-2-1
TT-2-5
N
0 440220
SCALE FEET
PR
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2/19/25
PROJECT NUMBER
DATE
AS SHOWNSCALE
DJLDESIGNED BY
CDAPPROVED BY
SRMDRAWN BY
FIGURE NUMBER
2064-0034
3
15
6
9

W
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U
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7963 Douglas Dr
Park City, UT 84098
Phone: [phone]
www.hillwestut.com
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GOOGLE EARTH (2023)IMAGE SOURCE:
LEGEND
Power District Redevelopment
Project Boundary
Approximate Site Boundary
Soil Boring, December 2020 3/4-acre Grid
Soil Boring, March 2021
Poposed Soil Boring Location
Monitoring Well, ABF Freight
Monitoring Well, 1993
Decommissioned Monitoring Well, 1993
Approximate Historical Coal Storage Area Boundary
Soil Boring with Temporary Water Well,
Tetra Tech December 2023
Groundwater Well, Tetra Tech December 2023
Soil Boring, Tetra Tech December 2023
NTO-21
NTO-24
MW-1
MW-3
MW-1
TT-2-2
TT-1-5
TT-1-4
Monitoring WellMW-8
Poposed Soil Boring Location - CCR Profiling
West North Temple Street
VCP AREA 'C'
VCP AREA 'B'
VCP AREA 'D'
South Temple Street
Shed
FORMER ABF FREIGHT
NTO-5
NTO-4
NTO-9 NTO-10
NTO-11
NTO-12
NTO-13
NTO-14
NTO-3
NTO-1NTO-2
NTO-16
NTO-17
NTO-15
NTO-18
NTO-19
NTO-20
NTO-23
MW-2
MW-6
MW-5
MW-3
MW-4
MW-1
TT-1-1TT-1-2
TT-2-11
TT-2-3
TT-2-5
TT-2-4
TT-2-6 TT-2-7
TT-2-9
TT-2-10
NTO-22
MW-9
MW-10
MW-13
MW-14
Former Gasoline UST
(Decommissioned 1986)
TT-2-1
TT-2-2
Former Gasoline/Diesel USTs (Decommissioned 1990)
Former Gasoline USTs (Decommissioned 1993)
Former Gasoline/Diesel UST
(Decommissioned 1993)
Former Dispenser Island
Approximate Limit of
Former Excavation
N
0 240120
SCALE FEETGOOGLE EARTH (2023)IMAGE SOURCE:
PR
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4/16/25
PROJECT NUMBER
DATE
AS SHOWNSCALE
DJLDESIGNED BY
CDAPPROVED BY
SRMDRAWN BY
FIGURE NUMBER
2064-0034
4
15
6
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7963 Douglas Dr
Park City, UT 84098
Phone: [phone]
www.hillwestut.com
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LEGEND
Power District Redevelopment
Project Boundary
Approximate Site BoundarySoil Boring, December 2020
Soil Boring, March 2021
Proposed Groundwater Monitoring Well
Monitoring Well, ABF Freight
Monitoring Well, 1993
Decommissioned Monitoring Well, 1993
Approximate Historical Coal Storage Area Boundary
Soil Boring with Temporary Water Well,
Tetra Tech December 2023
Groundwater Well, Tetra Tech December 2023
Soil Boring, Tetra Tech December 2023
NTO-21
NTO-24
MW-1
MW-3
MW-1
TT-2-2
TT-1-5
TT-1-4
Monitoring WellMW-8
West North Temple Street
VCP AREA 'C'
VCP AREA 'B'
VCP AREA 'D'
South Temple Street
Shed
FORMER ABF FREIGHT
NTO-5
NTO-4
NTO-9 NTO-10
NTO-11
NTO-12
NTO-13
NTO-14
NTO-3
NTO-1NTO-2
NTO-16
NTO-17
NTO-15
NTO-18
NTO-19
NTO-20
NTO-23
MW-2
MW-6
MW-5
MW-3
MW-4
MW-1
TT-1-1TT-1-2
TT-2-11
TT-2-3
TT-2-5
TT-2-4
TT-2-6 TT-2-7
TT-2-9
TT-2-10
NTO-22
MW-9
MW-10
MW-13
MW-14
Former Gasoline UST
(Decommissioned 1986)
TT-2-2
Former Gasoline/Diesel USTs (Decommissioned 1990)
Former Gasoline USTs (Decommissioned 1993)
Former Gasoline/Diesel UST
(Decommissioned 1993)
Former Dispenser Island
Approximate Limit of Former Excavation
TT-2-1
N
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SCALE FEETGOOGLE EARTH (2023)IMAGE SOURCE:
PO
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2/18/25
PROJECT NUMBER
DATE
AS SHOWNSCALE
DJLDESIGNED BY
CDAPPROVED BY
SRMDRAWN BY
FIGURE NUMBER
2064-0034
5
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W
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D
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R
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R
E
D
E
V
E
L
O
P
M
E
N
T

P
R
O
J
E
C
T

–
SI
T
E

C
H
A
R
A
C
T
E
R
I
Z
A
T
I
O
N

W
O
R
K

P
L
A
N

-

V
C
P

A
R
E
A

'
B
'
f5
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P
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o
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1
0

APPENDIX A
DECEMBER 2020 PRELIMINARY SITE INVESTIGATION
GEOLOGIC CROSS SECTIONS

APPROXIMATE SITE BOUNDARY
LEGEND
SOIL BORING LOCATIONNTO-1
West North Temple Street
No
r
t
h

R
e
d
w
o
o
d

R
o
a
d
NTO-5
NTO-6
NTO-4
NTO-7
NTO-8
NTO-9 NTO-10 NTO-11
NTO-12
NTO-13
NTO-14
NTO-3 NTO-1
NTO-2
NTO-16
NTO-17
NTO-15 NTO-18
NTO-19
NTO-20
NTO-21
NTO-22
NTO-23
Railro
a
d
West South Temple Street
A A'
B
B'
FE
D
C
D'
C'
F'
E'
CR
O
S
S

S
E
C
T
I
O
N

L
O
C
A
T
I
O
N

M
A
P
FI
G
U
R
E

T
I
T
L
E
SU
B
S
U
R
F
A
C
E

I
N
V
E
S
T
I
G
A
T
I
O
N

R
E
P
O
R
T
DO
C
U
M
E
N
T

T
I
T
L
E
RO
C
K
Y

M
O
U
N
T
A
I
N

P
O
W
E
R
CL
I
E
N
T
SA
L
T

L
A
K
E

S
E
R
V
I
C
E

C
E
N
T
E
R
15
6
9

W
E
S
T

N
O
R
T
H

T
E
M
P
L
E

S
T
R
E
E
T
,

S
A
L
T

L
A
K
E

C
I
T
Y
,

U
T
A
H
LO
C
A
T
I
O
N
2/2/21
PROJECT NUMBER
DATE
AS SHOWNSCALE
DJLDESIGNED BY
CDAPPROVED BY
SRMDRAWN BY
FIGURE NUMBER
2064-012.001
A-1
0 400200
SCALE FEET
N
GOOGLE EARTH (2017)IMAGE SOURCE:
7963 Douglas Dr
Park City, UT 84098
Phone: [phone]
www.hillwestut.com
ill
Environmental
H
estW
SOIL BORING LOCATIONS SURVEYD BY WILDING ENGINEERING, INC., 1/2021
AP
P
R
O
X
I
M
A
T
E

E
L
E
V
A
T
I
O
N
A
4224
4223
4222
4221
4220
4219
4218
4217
4216
4215
4214
4213
4212
4211
4210
4209
4208
4207
4206
4205
4204
4203
4202
4201
4200
4199
4198
4197
NTO-4
AP
P
R
O
X
I
M
A
T
E

E
L
E
V
A
T
I
O
N
A'
4224
4223
4222
4221
4220
4219
4218
4217
4216
4215
4214
4213
4212
4211
4210
4209
4208
4207
4206
4205
4204
4203
4202
4201
4200
4199
4198
4197
NTO-5
(Projected 50' South)
FILL
NTO-3 NTO-2 NTO-1
FILL
FILL FILL
CL
CL
CL CL
CL
CL
CL
CL
SP
SP SP SP
SM SM
4196
4195
4194
4193
4192
-5
-10
-15
-20
NTO-5
DEPTH = 20 FT BGS
-5
-10
-15
-20
-5
-10
-15
-20
NTO-3
DEPTH = 20 FT BGS
-5
-10
-15
-20
-5
-10
-15
-20
-25
-30
NTO-1
DEPTH = 30 FT BGS
NTO-2
DEPTH = 24 FT BGS
NTO-4
DEPTH = 24 FT BGS
HORIZONTAL SCALE
(FEET)
VE
R
T
I
C
A
L

S
C
A
L
E
(F
E
E
T
)
100 20000
VERTICAL
EXAGGERATION = 20x5
10
EXPLANATION
SOIL BORING
APPROXIMATE GROUNDWATER ELEVATION
SM SILTY SAND
SP POORLY GRADED SAND
CL CLAY
FEET BELOW GROUND SURFACEFT BGS
CR
O
S
S
-
S
E
C
T
I
O
N

A
-
A
'
FI
G
U
R
E

T
I
T
L
E
DO
C
U
M
E
N
T

T
I
T
L
E
CL
I
E
N
T
LO
C
A
T
I
O
N
2/8/21
PROJECT NUMBER
DATE
AS SHOWNSCALE
DJLDESIGNED BY
CDAPPROVED BY
SRMDRAWN BY
FIGURE NUMBER
A-2
SU
B
S
U
R
F
A
C
E

I
N
V
E
S
T
I
G
A
T
I
O
N

R
E
P
O
R
T
RO
C
K
Y

M
O
U
N
T
A
I
N

P
O
W
E
R
SA
L
T

L
A
K
E

S
E
R
V
I
C
E

C
E
N
T
E
R
15
6
9

W
E
S
T

N
O
R
T
H

T
E
M
P
L
E

S
T
R
E
E
T
,

S
A
L
T

L
A
K
E

C
I
T
Y
,

U
T
A
H
2064-012.001
NTO-1
7963 Douglas Dr
Park City, UT 84098
Phone: [phone]
www.hillwestut.com
AP
P
R
O
X
I
M
A
T
E

E
L
E
V
A
T
I
O
N
B
4224
4223
4222
4221
4220
4219
4218
4217
4216
4215
4214
4213
4212
4211
4210
4209
4208
4207
4206
4205
4204
4203
4202
AP
P
R
O
X
I
M
A
T
E

E
L
E
V
A
T
I
O
N
B'
4224
4223
4222
4221
4220
4219
4218
4217
4216
4215
4214
4213
4212
4211
4210
4209
4208
4207
4206
4205
4204
4203
4202
NTO-6 NTO-13
NTO-14 NTO-16 NTO-17
ENGINEERED
FILL
FILL
FILL FILL FILL
CL
CL CL
CL
CL
CL
CL
CL
CL CL
SM
SM SM
SM
SM
SP SP
SP SP
SP
?
??
?
?
?
?
?
??
-5
-10
-15
-20
NTO-6
DEPTH = 20 FT BGS
-5
-10
-15
-20
NTO-13
DEPTH = 20 FT BGS
-5
-10
-15
-20
NTO-14
DEPTH = 20 FT BGS
-5
-10
-15
-20
NTO-16
DEPTH = 20 FT BGS
-5
-10
-15
-20
NTO-17
DEPTH = 20 FT BGS
HORIZONTAL SCALE
(FEET)
VE
R
T
I
C
A
L

S
C
A
L
E
(F
E
E
T
)
100 20000
VERTICAL
EXAGGERATION = 20x5
10
EXPLANATION
SOIL BORING
APPROXIMATE GROUNDWATER ELEVATION
SM SILTY SAND
SP POORLY GRADED SAND
CL CLAY
FEET BELOW GROUND SURFACEFT BGS
CR
O
S
S
-
S
E
C
T
I
O
N

B
-
B
'
FI
G
U
R
E

T
I
T
L
E
DO
C
U
M
E
N
T

T
I
T
L
E
CL
I
E
N
T
LO
C
A
T
I
O
N
2/8/21
PROJECT NUMBER
DATE
AS SHOWNSCALE
DJLDESIGNED BY
CDAPPROVED BY
SRMDRAWN BY
FIGURE NUMBER
A-3
SU
B
S
U
R
F
A
C
E

I
N
V
E
S
T
I
G
A
T
I
O
N

R
E
P
O
R
T
RO
C
K
Y

M
O
U
N
T
A
I
N

P
O
W
E
R
SA
L
T

L
A
K
E

S
E
R
V
I
C
E

C
E
N
T
E
R
15
6
9

W
E
S
T

N
O
R
T
H

T
E
M
P
L
E

S
T
R
E
E
T
,

S
A
L
T

L
A
K
E

C
I
T
Y
,

U
T
A
H
2064-012.001
NTO-6
7963 Douglas Dr
Park City, UT 84098
Phone: [phone]
www.hillwestut.com
AP
P
R
O
X
I
M
A
T
E

E
L
E
V
A
T
I
O
N
C
4225
4224
4223
4222
4221
4220
4219
4218
4217
4216
4215
4214
4213
4212
4211
4210
4209
4208
4207
4206
4205
4204
4203
4202
4201
4200
4199
4198
AP
P
R
O
X
I
M
A
T
E

E
L
E
V
A
T
I
O
N
C'
4225
4224
4223
4222
4221
4220
4219
4218
4217
4216
4215
4214
4213
4212
4211
4210
4209
4208
4207
4206
4205
4204
4203
4202
4201
4200
4199
4198
4197
NTO-8
NTO-9 NTO-10
NTO-11 NTO-15 NTO-18
FILL FILL
FILL FILL FILL
CL CL
CL
CL
CL
CL CL
CL CL
CL
SM
SM SM SM
SM
SP
SP
SP SP SP
-5
-10
-15
-20
NTO-8
DEPTH = 20 FT BGS
-5
-10
-15
-20
-5
-10
-15
-20
NTO-10
DEPTH = 20 FT BGS
-5
-10
-15
-20
NTO-11
DEPTH = 20 FT BGS
-5
-10
-15
-20
NTO-15
DEPTH = 20 FT BGS
-5
-10
-15
-20
-25
NTO-18
DEPTH = 25 FT BGS
NTO-9
DEPTH = 24 FT BGS
HORIZONTAL SCALE
(FEET)
VE
R
T
I
C
A
L

S
C
A
L
E
(F
E
E
T
)
100 20000
VERTICAL
EXAGGERATION = 20x5
10
EXPLANATION
SOIL BORING
APPROXIMATE GROUNDWATER ELEVATION
SM SILTY SAND
SP POORLY GRADED SAND
CL CLAY
FEET BELOW GROUND SURFACEFT BGS
CR
O
S
S
-
S
E
C
T
I
O
N

C
-
C
'
FI
G
U
R
E

T
I
T
L
E
DO
C
U
M
E
N
T

T
I
T
L
E
CL
I
E
N
T
LO
C
A
T
I
O
N
2/8/21
PROJECT NUMBER
DATE
AS SHOWNSCALE
DJLDESIGNED BY
CDAPPROVED BY
SRMDRAWN BY
FIGURE NUMBER
A-4
SU
B
S
U
R
F
A
C
E

I
N
V
E
S
T
I
G
A
T
I
O
N

R
E
P
O
R
T
RO
C
K
Y

M
O
U
N
T
A
I
N

P
O
W
E
R
SA
L
T

L
A
K
E

S
E
R
V
I
C
E

C
E
N
T
E
R
15
6
9

W
E
S
T

N
O
R
T
H

T
E
M
P
L
E

S
T
R
E
E
T
,

S
A
L
T

L
A
K
E

C
I
T
Y
,

U
T
A
H
2064-012.001
NTO-8
7963 Douglas Dr
Park City, UT 84098
Phone: [phone]
www.hillwestut.com
AP
P
R
O
X
I
M
A
T
E

E
L
E
V
A
T
I
O
N
D
4225
4224
4223
4222
4221
4220
4219
4218
4217
4216
4215
4214
4213
4212
4211
4210
4209
4208
4207
4206
4205
4204
4203
4202
AP
P
R
O
X
I
M
A
T
E

E
L
E
V
A
T
I
O
N
D'
4225
4224
4223
4222
4221
4220
4219
4218
4217
4216
4215
4214
4213
4212
4211
4210
4209
4208
4207
4206
4205
4204
4203
4202
NTO-5
NTO-6 NTO-7
NTO-8
FILL
FILL FILL
CL
CL
CL
SM
SM
SM
SP
SP SP
CL
CL CL
-5
-10
-15
-20
NTO-5
DEPTH = 20 FT BGS
-5
-10
-15
-20
NTO-6
DEPTH = 20 FT BGS
-5
-10
-15
-20
NTO-7
DEPTH = 20 FT BGS
-5
-10
-15
-20
NTO-8
DEPTH = 20 FT BGS
HORIZONTAL SCALE
(FEET)
VE
R
T
I
C
A
L

S
C
A
L
E
(F
E
E
T
)
100 20000
VERTICAL
EXAGGERATION = 20x5
10
EXPLANATION
SOIL BORING
APPROXIMATE GROUNDWATER ELEVATION
SM SILTY SAND
SP POORLY GRADED SAND
CL CLAY
FEET BELOW GROUND SURFACEFT BGS
CR
O
S
S
-
S
E
C
T
I
O
N

D
-
D
'
FI
G
U
R
E

T
I
T
L
E
DO
C
U
M
E
N
T

T
I
T
L
E
CL
I
E
N
T
LO
C
A
T
I
O
N
2/8/21
PROJECT NUMBER
DATE
AS SHOWNSCALE
DJLDESIGNED BY
CDAPPROVED BY
SRMDRAWN BY
FIGURE NUMBER
A-5
SU
B
S
U
R
F
A
C
E

I
N
V
E
S
T
I
G
A
T
I
O
N

R
E
P
O
R
T
RO
C
K
Y

M
O
U
N
T
A
I
N

P
O
W
E
R
SA
L
T

L
A
K
E

S
E
R
V
I
C
E

C
E
N
T
E
R
15
6
9

W
E
S
T

N
O
R
T
H

T
E
M
P
L
E

S
T
R
E
E
T
,

S
A
L
T

L
A
K
E

C
I
T
Y
,

U
T
A
H
2064-012.001
NTO-5
7963 Douglas Dr
Park City, UT 84098
Phone: [phone]
www.hillwestut.com
AP
P
R
O
X
I
M
A
T
E

E
L
E
V
A
T
I
O
N
E
4227
4226
4225
4224
4223
4222
4221
4220
4219
4218
4217
4216
4215
4214
4213
4212
4211
4210
4209
4208
4207
4206
4205
4204
4203
4202
4201
4200
4199
4198
AP
P
R
O
X
I
M
A
T
E

E
L
E
V
A
T
I
O
N
E'
4227
4226
4225
4224
4223
4222
4221
4220
4219
4218
4217
4216
4215
4214
4213
4212
4211
4210
4209
4208
4207
4206
4205
4204
4203
4202
4201
4200
4199
4198
NTO-4
NTO-13 NTO-12
NTO-19
NTO-11
NTO-20
NTO-21
ENGINEERED
FILL
?
?
?
?
?
?
?
?
??
FILL
FILL FILL
FILL
FILL FILL
CL
CL
CL
CL
CL
CL
CLCLCLCLCL
CL
SM
SM
SP
SP SP
SP SP SP
SM SM
SM
?
?
-5
-10
-15
-20
NTO-4
DEPTH = 24 FT BGS
-5
-10
-15
-20
NTO-13
DEPTH = 20 FT BGS
-5
-10
-15
-20
NTO-12
DEPTH = 20 FT BGS
-5
-10
-15
-20
NTO-11
DEPTH = 20 FT BGS
-5
-10
-15
-20
NTO-19
DEPTH = 24 FT BGS
-5
-10
-15
-20
NTO-21
DEPTH = 25 FT BGS
-5
-10
-15
-20
NTO-20
DEPTH = 20 FT BGS
-25
HORIZONTAL SCALE
(FEET)
VE
R
T
I
C
A
L

S
C
A
L
E
(F
E
E
T
)
100 20000
VERTICAL
EXAGGERATION = 20x5
10
EXPLANATION
SOIL BORING
APPROXIMATE GROUNDWATER ELEVATION
SM SILTY SAND
SP POORLY GRADED SAND
CL CLAY
FEET BELOW GROUND SURFACEFT BGS
CR
O
S
S
-
S
E
C
T
I
O
N

E
-
E
'
FI
G
U
R
E

T
I
T
L
E
DO
C
U
M
E
N
T

T
I
T
L
E
CL
I
E
N
T
LO
C
A
T
I
O
N
2/8/21
PROJECT NUMBER
DATE
AS SHOWNSCALE
DJLDESIGNED BY
CDAPPROVED BY
SRMDRAWN BY
FIGURE NUMBER
A-6
SU
B
S
U
R
F
A
C
E

I
N
V
E
S
T
I
G
A
T
I
O
N

R
E
P
O
R
T
RO
C
K
Y

M
O
U
N
T
A
I
N

P
O
W
E
R
SA
L
T

L
A
K
E

S
E
R
V
I
C
E

C
E
N
T
E
R
15
6
9

W
E
S
T

N
O
R
T
H

T
E
M
P
L
E

S
T
R
E
E
T
,

S
A
L
T

L
A
K
E

C
I
T
Y
,

U
T
A
H
2064-012.001
NTO-4
7963 Douglas Dr
Park City, UT 84098
Phone: [phone]
www.hillwestut.com
SM
AP
P
R
O
X
I
M
A
T
E

E
L
E
V
A
T
I
O
N
F
4227
4226
4225
4224
4223
4222
4221
4220
4219
4218
4217
4216
4215
4214
4213
4212
4211
4210
4209
4208
4207
4206
4205
4204
4203
4202
4201
4200
4199
4198
AP
P
R
O
X
I
M
A
T
E

E
L
E
V
A
T
I
O
N
F'
4227
4226
4225
4224
4223
4222
4221
4220
4219
4218
4217
4216
4215
4214
4213
4212
4211
4210
4209
4208
4207
4206
4205
4204
4203
4202
NTO-2 NTO-16 NTO-15
NTO-22
NTO-23
FILL FILL
FILL
FILL
CL CL
CL CL
CL
CL
CL
CL
CL
SM SM
SM
SP SP
SP SP
SP
-5
-10
-15
-20
NTO-2
DEPTH = 24 FT BGS
-5
-10
-15
-20
NTO-16
DEPTH = 20 FT BGS
-5
-10
-15
-20
NTO-15
DEPTH = 20 FT BGS
-5
-10
-15
-20
NTO-22
DEPTH = 20 FT BGS
-5
-10
-15
-20
NTO-23
DEPTH = 20 FT BGS
HORIZONTAL SCALE
(FEET)
VE
R
T
I
C
A
L

S
C
A
L
E
(F
E
E
T
)
100 20000
VERTICAL
EXAGGERATION = 20x5
10
EXPLANATION
SOIL BORING
APPROXIMATE GROUNDWATER ELEVATION
SM SILTY SAND
SP POORLY GRADED SAND
CL CLAY
FEET BELOW GROUND SURFACEFT BGS
CR
O
S
S
-
S
E
C
T
I
O
N

F
-
F
'
FI
G
U
R
E

T
I
T
L
E
DO
C
U
M
E
N
T

T
I
T
L
E
CL
I
E
N
T
LO
C
A
T
I
O
N
2/8/21
PROJECT NUMBER
DATE
AS SHOWNSCALE
DJLDESIGNED BY
CDAPPROVED BY
SRMDRAWN BY
FIGURE NUMBER
A-7
SU
B
S
U
R
F
A
C
E

I
N
V
E
S
T
I
G
A
T
I
O
N

R
E
P
O
R
T
RO
C
K
Y

M
O
U
N
T
A
I
N

P
O
W
E
R
SA
L
T

L
A
K
E

S
E
R
V
I
C
E

C
E
N
T
E
R
15
6
9

W
E
S
T

N
O
R
T
H

T
E
M
P
L
E

S
T
R
E
E
T
,

S
A
L
T

L
A
K
E

C
I
T
Y
,

U
T
A
H
2064-012.001
NTO-2
7963 Douglas Dr
Park City, UT 84098
Phone: [phone]
www.hillwestut.com

APPENDIX B
FIELD FORMS
DATE BEGAN
DATE COMPLETED
TOTAL DEPTH
SHEET OF
GROUND ELEVATION
NOTES:
LOG OF
EXPLORATORY BORING
BORING
DEPTHOT
H
E
R
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
__
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
SA
M
P
L
I
N
G

M
E
T
H
O
D
WE
L
L

O
R

PI
E
Z
O
M
E
T
E
R
DE
T
A
I
L
S
TIME
SAMPLING DATA
SA
M
P
L
E

I
D
BL
O
W

C
O
U
N
T
DE
P
T
H

S
A
M
P
L
E
D
DE
P
T
H

I
N

F
E
E
T
WATER LEVEL DATA
BORING ID.CLIENT/PROJECT NAME
DATE
LITHOLOGIC DESCRIPTION
DATUM
FIELD LOCATION OF BORING:
DEPTH
SO
I
L

G
R
O
U
P

S
Y
M
B
O
L

(U
S
C
S
)
PROJECT #
GEOLOGIST/ENGINEER
DRILLING CONTRACTOR
DRILLING METHOD
HOLE DIAMETER
WELL DEVELOPMENT DATA SHEET

PROJECT NAME: ______________________________________ WELL ID:

SITE ADDRESS:

Wind From N NE E SE S SW W NW Light Medium Heavy
Weather Sunny Cloudy Rain __________? Temperature: _____ºF _____ºC

WELL DATA
Date Casing Diam DTB DTW DTB-DTW Casing Vol (gal)

Annulus Diam. Annulus
Length
Annulus
vol. per foot
(bh-c)
Annulus Volume
(gal)
BOREHOLE VOL.
[Annulus + Casing]
(gal)
0.23
Gal/ft=(dia/2)2x0.163 1” = 0.041 2” = 0.163 3” = 0.367 4” = 0.653 6” = 1.469 10” = 4.080 12” = 5.875

WATER QUALITY DATA
Volume
(gal)
PH Spec.
Cond.
Temp Dissolved
Oxygen
Turbidity Observations

Notes:

Developed By: Signature:
FIELD SAMPLING DATA SHEET
LOW-FLOW GROUNDWATER SAMPLING

PROJECT NAME: _________________________________________ WELL ID:
SITE ADDRESS: LABEL CODE:
DUPLICATE ID:

Wind From N NE E SE S SW W NW Light Medium Heavy
Weather Sunny Cloudy Rain __________? Temperature: _____ºF _____ºC

WELL DATA
Date Time Casing Diameter DT-Product DT-Water Product Thickness

PUMP/INTAKE DEPTH (ft btoc):______________

WATER QUALITY DATA
Time DTW Liters PH Temp DO Spec.
Cond.
Redox Turb

GROUNDWATER SAMPLE DATA
Sample Date:__________
Sample Time:__________
Bottle Type √ Amount & Volume Preservative Filter
VOA Glass 40 ml HCl NA
Amber Glass 1 liter HCl/None NA
Poly HNO3
Total Bottles

Notes:

Sampled By: Signature: