DERR-2024-006577

Underwood Environmental Consulting, Inc.
9475 N. Silver Creek Rd., Park City, Utah 84098  Phone [phone]  Fax [phone]

GROUNDWATER MONITORING REPORT
November 2023

January 3, 2024

Former Calvinco Co.
(Intermountain Lock)
3106 South Main Street
South Salt Lake, Utah
Facility ID #4000124, Release Site OBL

Submitted To:

Mr. Darrel Vincent
Pyramid Oil Co.
4996 South 950 East
Ogden, Utah 84403

Copy To:

Mr. Mark Crim
Department of Environmental Quality
Division of Environmental Response and Remediation
P.O. Box 144840
Salt Lake City, Utah 84114-4840

Groundwater Monitoring Report – November 2023
Former Calvinco Co.
3106 S. Main St., South Salt Lake, UT
Facility ID #4000124, Release Site OBL

Underwood Environmental Consulting, Inc.
2
1.0 INTRODUCTION

Underwood Environmental Consulting, Inc. (UEC) performed a groundwater monitoring event
for Calvinco Company at a former Calvinco Co. service station in South Salt Lake, Utah in
November 2023. The groundwater monitoring event was conducted following subsurface
investigations of Release Site OBL in February 2022 and May 2023. The project site, located at
3106 South Main Street, is currently the corporate headquarters of Intermountain Lock and
Security Supply (IML) (Figure 1). The Utah Division of Environmental Response and
Remediation (DERR) identifies the project site as Facility ID #4000124, Release Site OBL.

This report presents the results of groundwater monitoring in November 2023.

2.0 BACKGROUND

The project site was operated as a petroleum marketing business (Calvinco Co. or Pyramid Oil
Co.) from 1955 to 1986. The site was re-developed in 2003 as IML and has a 3-story office
building on it. A “closed-in-place” underground storage tank (UST) is located near the southeast
corner of the property.

A Phase I Environmental Site Assessment (ESA) and subsequent Limited Phase II Subsurface
Investigation (SI) were performed at the project site, by others, for Zions Bank/IML in 2021. A
record provided in the ESA indicates a 3,000-gallon diesel underground storage tank (UST)
“closed-in-place” near the southeast corner of the property (Western Geologic, 2021a). The
environmental sampling conducted during the Limited Phase II SI detected petroleum
hydrocarbons in soil and groundwater at concentrations in excess of Utah Initial Screening Levels
(ISLs) (Western Geologic, 2021b). The DERR subsequently opened release site OBL.

The 2022 subsurface investigation included soil borings and monitor well installations and
established that elevated TPH-GRO and TPH-DRO concentrations are present in groundwater.
The volatile hydrocarbon (BTEX) concentrations in soil and groundwater were relatively low,
likely due to degradation over time (Figure 1; Table 1) (UEC, 2022). More than 35 years have
passed since petroleum was marketed at this location.

An additional SI was conducted at the site in May 2023 to address concerns raised by the DERR
in their letter to Calvinco Co. dated March 28, 2023. The DERR requested additional sampling
to better define the potential for petroleum-vapor intrusion to the IML building (DERR, 2023).
Three additional monitoring wells were installed during the SI and the soil and groundwater
sample analyses included evaluation of the indoor air exposure pathway. The soil sample
fractionation results failed indoor air inhalation guidance for C7-C8 aliphatic hydrocarbons based
on numerical modeling. However, given the general lack of detectable benzene in soil or
groundwater, UEC believes that further investigation of indoor air inhalation pathway is
unwarranted (UEC, 2023). Furthermore, the property owner has expressed concern regarding the
intrusive nature of drilling through the building foundation slab.

Groundwater Monitoring Report – November 2023
Former Calvinco Co.
3106 S. Main St., South Salt Lake, UT
Facility ID #4000124, Release Site OBL

Underwood Environmental Consulting, Inc.
3

3.0 METHODOLOGY

3.1 Groundwater Monitoring

In November 2023, water levels were measured in seven monitoring wells using an electronic
water level indicator. The monitor wells were subsequently purged of three casing volumes of
water, or until dry, prior to sampling. A separate disposable bailer was utilized for each well. The
groundwater samples were labeled appropriately, placed on ice, and submitted to the laboratory
under chain-of-custody. The groundwater samples were analyzed for methyl tertiary butyl ether
(MTBE), benzene, toluene, ethylbenzene, total xylenes, naphthalene (BTEXN), total petroleum
hydrocarbons – gasoline range organics (TPH-GRO), and TPH – diesel range organics (TPH-
DRO) using EPA methods 8260B/C, 8260D, and 8015C.

4.0 RESULTS

4.1 Depth to Water and Flow Direction

On November 12, 2023, the depth to groundwater ranged from 8.36 to 11.05 feet below top-of-
casing (TOC) (Table 1). Figure 2 depicts a groundwater contour map for the project site on the
same date. Based on the measured groundwater elevations, the groundwater flow direction was
westerly.

4.2 Groundwater Analytical Results

The seven monitoring wells were purged and sampled on November 12, 2023. The groundwater
analytical results presented on Table 1 are compared with Initial Screening Levels (ISLs) and Tier
1 Levels (DERR, 2005).

In November 2023, one of the seven wells sampled exceeded the Tier 1 level for TPH-GRO. The
highest TPH-GRO concentration detected in groundwater was 10.6 milligrams-per-liter (mg/L) at
MW-7. The highest TPH-DRO concentration detected was 7.4 mg/L also at MW-7. The ISL for
TPH-GRO and TPH-DRO was exceeded at three other monitor wells (MW-1, MW-2, and MW-
3). Groundwater samples at two wells (MW-1 and MW-7) met or exceeded the ISL for
ethylbenzene (Table 1; Figure 2).

No hydrocarbons were detected in groundwater at monitoring wells MW-4, MW-5, and MW-6.
No MTBE, benzene, or toluene was detected in any of the groundwater samples collected (Table
1; Figure 2). No measurable free product was observed in the monitoring wells.

The laboratory analytical reports for the November 2023 groundwater monitoring event are
provided as an attachment.

Groundwater Monitoring Report – November 2023
Former Calvinco Co.
3106 S. Main St., South Salt Lake, UT
Facility ID #4000124, Release Site OBL

Underwood Environmental Consulting, Inc.
4
5.0 CONCLUSIONS AND RECOMMENDATIONS

Based on field observations and the groundwater analytical results of November 2023, the
following conclusions are presented:

• Depth to groundwater ranged from approximately 8 to 11 feet below top of well casing.

• The groundwater flow direction was westerly.

• The Tier 1 level for TPH-GRO was exceeded at one well location. The highest TPH-GRO
concentration detected in groundwater was 10.6 mg/L at MW-7. The highest TPH-DRO
concentration detected in groundwater was 7.4 mg/L also at MW-7.

• The ISL for ethylbenzene was met or exceeded at two well locations. The highest
ethylbenzene concentration detected was 0.959 mg/L at MW-7.

• No hydrocarbons were detected in groundwater at monitoring wells MW-4, MW-5, and
MW-6. No MTBE, benzene, or toluene was detected in groundwater samples collected.

• No measurable free product has been observed in the monitoring wells.

UEC’s recommendations for the next step includes installation of “near slab” soil vapor sampling
points near the locations of monitoring wells MW-7 (adjacent the showroom) and MW-5 (near the
parking garage). These two locations contained soil TPH fractionation data which exceeded the
DERR’s SSCL for C7-C8 aliphatic hydrocarbons.

6.0 LIMITATIONS

Our services consist of professional opinions from a state-certified consultant, made in general
accordance with locally accepted environmental practices at the time of execution. Environmental
samples are obtained from specific locations, utilizing methodologies consistent with Utah
Department of Environmental Quality regulations. UEC makes no guarantee, either expressed or
implied, that the analytical results accurately represent subsurface conditions throughout the entire
project site.

Respectfully,
Underwood Environmental Consulting, Inc.
James A. McReel, P.G. L. Earl Underwood, P.G.
Project Geologist, CC-0044 Sr. Geologist, CC-0018

Groundwater Monitoring Report – November 2023
Former Calvinco Co.
3106 S. Main St., South Salt Lake, UT
Facility ID #4000124, Release Site OBL

Underwood Environmental Consulting, Inc.
5

Attachments: Table 1 Groundwater Monitoring Data
Figure 1 Site Map
Figure 2 Groundwater Contour Map – November 12, 2023
Laboratory Analytical Reports

Groundwater Monitoring Report – November 2023
Former Calvinco Co.
3106 S. Main St., South Salt Lake, UT
Facility ID #4000124, Release Site OBL

Underwood Environmental Consulting, Inc.
6

References Cited:

DERR, 2005 Utah LUST Program Screening Levels for Soil and Groundwater:
Utah Division of Environmental Response and Remediation, Salt
Lake City, Utah, November 1, 2005.

DERR, 2023 Additional Sampling Requirements Following Site Closure Review,
Former Calvinco Co., UST, located at 3120 South Main Street,
South Salt Lake City, Utah, Facility Identification No. 4000124,
Release Site OBL: Utah Division of Environmental Response and
Remediation, Salt Lake City, Utah, March 28, 2023.

UEC, 2022 Subsurface Investigation Report, Release OBL, Former Calvinco
Co. (Intermountain Lock), 3106 South Main St., South Salt Lake,
UT, Facility Identification No. 4000124, Release Site OBL:
Underwood Environmental Consulting, Inc., Park City, Utah,
March 31, 2022.

UEC, 2023 Subsurface Investigation Report #2, Release OBL, Former Calvinco
Co. (Intermountain Lock), 3106 South Main St., South Salt Lake,
UT, Facility Identification No. 4000124, Release Site OBL:
Underwood Environmental Consulting, Inc., Park City, Utah, July
24, 2023.

Western Geologic, 2021a Phase I Environmental Site Assessment, IML Security Supply,
3106 South Main Street, South Salt Lake, Utah 84115: Western
Geologic and Environmental, LLC, Salt Lake City, Utah, April 9,
2021.

Western Geologic, 2021b Limited Phase II Subsurface Investigation, IML Security Supply,
3106 South Main Street, South Salt Lake, Utah 84115: Western
Geologic and Environmental, LLC, Salt Lake City, Utah, May 12,
2021.
Groundwater Monitoring Report - November 2023
Former Calvinco Co. - IML
3106 South Main St., South Salt Lake, UT
Facility ID 4000124, Release Site OBL
WELL/DATE DTW
GW
Elev.MTBE Benzene Toluene
Ethyl-
benzene Xylenes
Naphth-
alene
TPH
(GRO)
TPH
(DRO)ELEV.(feet)(feet)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)
MW-1 03/04/22 9.29 90.71 <0.005 <0.005 0.012 1.68 4.84 0.488 7.92 7.7
100.00 06/11/22 9.36 90.64 <0.005 <0.005 0.014 1.94 6.49 0.500 19.0 7.9
09/11/22 10.24 89.76 <0.005 <0.005 <0.012 0.954 3.84 0.447 21.7 5.6
12/10/22 9.41 90.59 <0.005 <0.005 <0.012 0.901 1.69 0.340 22.4 5.6
05/28/23 8.86 91.14 <0.005 <0.005 0.012 1.61 6.08 0.441 15.6 6.3
11/12/23 9.78 90.22 <0.005 <0.005 <0.012 0.700 1.17 0.426 6.28 3.3
MW-2 03/04/22 7.80 90.72 <0.005 <0.005 <0.012 0.353 0.057 0.220 8.20 6.5
98.52 06/11/22 7.88 90.64 <0.005 <0.005 <0.012 0.239 0.036 0.126 11.3 8.9
09/11/22 8.88 89.64 <0.005 <0.005 <0.012 0.442 0.033 0.150 13.1 4.4
12/10/22 7.91 90.61 <0.005 <0.005 <0.012 0.850 0.038 0.132 24.4 4.7
05/28/23 7.35 91.17 <0.005 <0.005 <0.012 0.223 0.016 0.111 6.22 4.9
11/12/23 8.42 90.10 <0.005 <0.005 <0.012 0.618 0.024 0.138 4.45 3.0
MW-3 03/04/22 9.18 90.69 <0.005 <0.005 0.038 1.98 3.61 0.502 15.0 8.5
99.87 06/11/22 9.27 90.60 <0.005 <0.005 <0.012 0.636 1.09 0.101 6.85 3.7
09/11/22 10.41 89.46 <0.005 <0.005 0.015 0.952 1.13 0.261 12.6 3.8
12/10/22 9.33 90.54 <0.005 <0.005 <0.012 0.472 0.530 0.069 14.8 2.2
05/28/23 8.59 91.28 <0.005 <0.005 <0.012 0.048 0.067 0.019 1.03 <1.0
11/12/23 9.87 90.00 <0.005 <0.005 <0.012 0.373 0.342 0.061 2.05 1.3
MW-4 03/04/22 7.98 90.12 <0.005 <0.005 <0.012 <0.012 <0.012 <0.012 0.266 <1.0
98.10 06/11/22 7.92 90.18 <0.005 <0.005 <0.012 <0.012 <0.012 <0.012 <0.125 <1.0
09/11/22 8.92 89.18 0.036 <0.005 <0.012 <0.012 <0.012 <0.012 <0.125 <1.0
12/10/22 7.78 90.32 <0.005 <0.005 <0.012 <0.012 <0.012 <0.012 0.645 <1.0
05/28/23 7.21 90.89 <0.005 <0.005 <0.012 <0.012 <0.012 <0.012 <0.125 <1.0
11/12/23 8.63 89.47 <0.005 <0.005 <0.012 <0.012 <0.012 <0.012 <0.125 <1.0
MW-5 05/28/23 6.94 91.20 <0.005 <0.005 <0.012 <0.012 <0.012 <0.012 0.806 <1.0
98.14 11/12/23 8.36 89.78 <0.005 <0.005 <0.012 <0.012 <0.012 <0.012 <0.125 <1.0
MW-6 05/28/23 8.96 91.27 <0.005 <0.005 <0.012 <0.012 <0.012 <0.012 0.593 <1.0
100.23 11/12/23 10.27 89.96 <0.005 <0.005 <0.012 <0.012 <0.012 <0.012 <0.125 <1.0
MW-7 05/28/23 10.02 91.23 <0.005 <0.005 <0.012 0.780 1.42 0.375 10.9 8.0
101.25 11/12/23 11.05 90.20 <0.005 <0.005 <0.012 0.959 2.03 0.724 10.6 7.4
Initial Screening Levels (1)0.2 0.005 1 0.7 10 0.7 1 1
Tier 1 Screening Criteria (1)0.2 0.3 3 4 10 0.7 10 10
Notes:Arbitrary datum of 100.00 feet established on site.TPH (GRO) = Total Petroleum Hydrocarbons - Gasoline Range Organics
DTW = Depth to Water TPH (DRO) = Total Petroleum Hydrocarbons - Diesel Range Organics
GW Elev. = Groundwater Elevation < Indicates below given detection limit.
MTBE = Methyl Tertiary Butyl Ether Bold values are above Initial Screening Levels.
mg/L = Milligrams per Liter Highlighted,bold , values are above Tier 1 Screening Criteria.
(1) DERR, 2005
TABLE 1
GROUNDWATER MONITORING DATA
Underwood Environmental Consulting, Inc.
100 ft
LEGEND
approx. scale in feet
one inch ~ 50 feet
25
Former Calvinco Co.
(Intermountain Lock)
3106 South Main St.
South Salt Lake, Utah
Facility ID # 4000124
Release Site OBL
NORTH
0 50
Intermountain Lock Security Supply
Grace
Mary
Manor
Residential Units
Former
J & B Ser
Gas & Oil
(1940s) (1)
Afghan
Kitchen
FIGURE 1
SITE MAP
5/23/23
MW-2
Monitoring Well
B-1
Soil Boring
GP-06
Soil Boring (Western Geologic, 2021b)
(1) Western Geologic, 2021a
B-1
B-2
GP-06
GP-01
GP-02GP-03
GP-04
GP-05
MW-3 MW-1
MW-2
MW-4 MW-7MW-6
MW-5
LEGEND
approx. scale in feet
one inch ~ 30 feet
00 3015
Former Calvinco Co.
(Intermountain Lock)
3106 South Main St.
South Salt Lake, Utah
Facility ID # 4000124
Release Site OBL
NORTH
W
SD
Natural Gas
Water Line
G
W
S
(Utility Locations Approximate)
Power or Unknown
SD Storm Drain
CommunicationsC
P
Sanitary Sewer
U
GG
C
S
U
P
SD
SD
C
W
C C
U
S
S
SD
P
U
U
Ma
i
n

S
t
r
e
e
t
Angelo Avenue
Intermountain Lock Security Supply
Closed-in-Place
Diesel UST
Gr
a
c
e

M
a
r
y

M
a
n
o
r
FIGURE 2
GROUNDWATER
CONTOUR MAP
Nov. 12, 2023
12/20/23
MW-2
Monitoring Well
B-1
Soil Boring
Soil Boring (Western Geologic, 2021b)
GP-01
90.10 Groundwater Elev. (ft)
9
1
Groundwater Contour Line
(contour interval = 0.2 ft)
Groundwater
Flow Direction
B-2
B-1
GP-01
GP-02GP-03
GP-04
GP-05
MW-3 MW-1
MW-2
MW-4
MW-7
MW-6
MW-5
90.22
90.10
90.00
89.47
89.78
89.96 90.20
The analyses presented on this report were performed in accordance with the
National Environmental Laboratory Accreditation Program (NELAP) unless
noted in the comments, flags, or case narrative. If the report is to be used for
regulatory compliance, it should be presented in its entirety, and not be
altered.
Client Service Contact: 801.262.7299
Underwood Environmental Consulting
Attn: James McReel
9475 North Silver Creek Road
Park City, UT 84098
Work Order: 23K0986
Project: Calvinco - IML
11/17/2023
Approved By:
Mark Broadhead, Project Manager
9632 South 500 West Sandy, Utah 84070
Serving the Intermountain West since 1953
801.262.7299 Main 866.792.0093 Fax www.ChemtechFord.com
Page 1 of 10
xx
Chemtech-Ford Laboratories
Serving the Intermountain West Since 1953
Certificate of Analysis
9632 South 500 West
Sandy, UT 84070
O:[phone] F: [phone]
www.ChemtechFord.com
Underwood Environmental Consulting
James McReel
9475 North Silver Creek Road
Park City, UT 84098
PO#:
Receipt:
Date Reported:
Project Name:
OBL
11/13/23 10:00 @ 1.6 °C
11/17/2023
Calvinco - IML
Sample ID: MW-1
Lab ID: 23K0986-01Matrix: Water
Flag(s)Units
Analysis
Date/Time
Date Sampled: 11/12/23 14:45
Preparation
Date/Time
Sampled By: James McReel
Minimum
Reporting
Limit MethodResult
MBTEXn
mg/L 11/14/2311/14/230.005 EPA 8260D/5030BNDBenzene
mg/L 11/14/2311/14/230.012 EPA 8260D/5030B0.700Ethylbenzene
mg/L 11/14/2311/14/230.005 EPA 8260D/5030BNDMethyl tert-Butyl Ether (MTBE)
mg/L 11/14/2311/14/230.012 EPA 8260D/5030B0.426Naphthalene
mg/L 11/14/2311/14/230.012 EPA 8260D/5030BNDToluene
mg/L 11/14/2311/14/230.012 EPA 8260D/5030B1.17Xylenes, total
Gasoline Range
mg/L 11/14/2311/14/230.125 EPA 8260B/C /5030A/[CALC]6.28Gasoline Range Organics
Diesel Range
mg/L 11/14/2311/14/231.0 EPA 8015 C3.3Diesel Range Organics
Project Name: Calvinco - IML CtF WO#: 23K0986
www.ChemtechFord.com
Page 2 of 10Page 2 of 10
xx
Chemtech-Ford Laboratories
Serving the Intermountain West Since 1953
Certificate of Analysis
9632 South 500 West
Sandy, UT 84070
O:[phone] F: [phone]
www.ChemtechFord.com
Underwood Environmental Consulting
James McReel
9475 North Silver Creek Road
Park City, UT 84098
PO#:
Receipt:
Date Reported:
Project Name:
OBL
11/13/23 10:00 @ 1.6 °C
11/17/2023
Calvinco - IML
Sample ID: MW-2
Lab ID: 23K0986-02Matrix: Water
Flag(s)Units
Analysis
Date/Time
Date Sampled: 11/12/23 15:00
Preparation
Date/Time
Sampled By: James McReel
Minimum
Reporting
Limit MethodResult
MBTEXn
mg/L 11/14/2311/14/230.005 EPA 8260D/5030BNDBenzene
mg/L 11/14/2311/14/230.012 EPA 8260D/5030B0.618Ethylbenzene
mg/L 11/14/2311/14/230.005 EPA 8260D/5030BNDMethyl tert-Butyl Ether (MTBE)
mg/L 11/14/2311/14/230.012 EPA 8260D/5030B0.138Naphthalene
mg/L 11/14/2311/14/230.012 EPA 8260D/5030BNDToluene
mg/L 11/14/2311/14/230.012 EPA 8260D/5030B0.024Xylenes, total
Gasoline Range
mg/L 11/14/2311/14/230.125 EPA 8260B/C /5030A/[CALC]4.45Gasoline Range Organics
Diesel Range
mg/L 11/14/2311/14/231.0 EPA 8015 C3.0Diesel Range Organics
Project Name: Calvinco - IML CtF WO#: 23K0986
www.ChemtechFord.com
Page 3 of 10Page 3 of 10
xx
Chemtech-Ford Laboratories
Serving the Intermountain West Since 1953
Certificate of Analysis
9632 South 500 West
Sandy, UT 84070
O:[phone] F: [phone]
www.ChemtechFord.com
Underwood Environmental Consulting
James McReel
9475 North Silver Creek Road
Park City, UT 84098
PO#:
Receipt:
Date Reported:
Project Name:
OBL
11/13/23 10:00 @ 1.6 °C
11/17/2023
Calvinco - IML
Sample ID: MW-3
Lab ID: 23K0986-03Matrix: Water
Flag(s)Units
Analysis
Date/Time
Date Sampled: 11/12/23 13:30
Preparation
Date/Time
Sampled By: James McReel
Minimum
Reporting
Limit MethodResult
MBTEXn
mg/L 11/14/2311/14/230.005 EPA 8260D/5030BNDBenzene
mg/L 11/14/2311/14/230.012 EPA 8260D/5030B0.373Ethylbenzene
mg/L 11/14/2311/14/230.005 EPA 8260D/5030BNDMethyl tert-Butyl Ether (MTBE)
mg/L 11/14/2311/14/230.012 EPA 8260D/5030B0.061Naphthalene
mg/L 11/14/2311/14/230.012 EPA 8260D/5030BNDToluene
mg/L 11/14/2311/14/230.012 EPA 8260D/5030B0.342Xylenes, total
Gasoline Range
mg/L 11/14/2311/14/230.125 EPA 8260B/C /5030A/[CALC]2.05Gasoline Range Organics
Diesel Range
mg/L 11/14/2311/14/231.0 EPA 8015 C1.3Diesel Range Organics
Project Name: Calvinco - IML CtF WO#: 23K0986
www.ChemtechFord.com
Page 4 of 10Page 4 of 10
xx
Chemtech-Ford Laboratories
Serving the Intermountain West Since 1953
Certificate of Analysis
9632 South 500 West
Sandy, UT 84070
O:[phone] F: [phone]
www.ChemtechFord.com
Underwood Environmental Consulting
James McReel
9475 North Silver Creek Road
Park City, UT 84098
PO#:
Receipt:
Date Reported:
Project Name:
OBL
11/13/23 10:00 @ 1.6 °C
11/17/2023
Calvinco - IML
Sample ID: MW-4
Lab ID: 23K0986-04Matrix: Water
Flag(s)Units
Analysis
Date/Time
Date Sampled: 11/12/23 12:30
Preparation
Date/Time
Sampled By: James McReel
Minimum
Reporting
Limit MethodResult
MBTEXn
mg/L 11/14/2311/14/230.005 EPA 8260D/5030BNDBenzene
mg/L 11/14/2311/14/230.012 EPA 8260D/5030BNDEthylbenzene
mg/L 11/14/2311/14/230.005 EPA 8260D/5030BNDMethyl tert-Butyl Ether (MTBE)
mg/L 11/14/2311/14/230.012 EPA 8260D/5030BNDNaphthalene
mg/L 11/14/2311/14/230.012 EPA 8260D/5030BNDToluene
mg/L 11/14/2311/14/230.012 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/L 11/14/2311/14/230.125 EPA 8260B/C /5030A/[CALC]NDGasoline Range Organics
Diesel Range
mg/L 11/14/2311/14/231.0 EPA 8015 CNDDiesel Range Organics
Project Name: Calvinco - IML CtF WO#: 23K0986
www.ChemtechFord.com
Page 5 of 10Page 5 of 10
xx
Chemtech-Ford Laboratories
Serving the Intermountain West Since 1953
Certificate of Analysis
9632 South 500 West
Sandy, UT 84070
O:[phone] F: [phone]
www.ChemtechFord.com
Underwood Environmental Consulting
James McReel
9475 North Silver Creek Road
Park City, UT 84098
PO#:
Receipt:
Date Reported:
Project Name:
OBL
11/13/23 10:00 @ 1.6 °C
11/17/2023
Calvinco - IML
Sample ID: MW-5
Lab ID: 23K0986-05Matrix: Water
Flag(s)Units
Analysis
Date/Time
Date Sampled: 11/12/23 13:00
Preparation
Date/Time
Sampled By: James McReel
Minimum
Reporting
Limit MethodResult
MBTEXn
mg/L 11/14/2311/14/230.005 EPA 8260D/5030BNDBenzene
mg/L 11/14/2311/14/230.012 EPA 8260D/5030BNDEthylbenzene
mg/L 11/14/2311/14/230.005 EPA 8260D/5030BNDMethyl tert-Butyl Ether (MTBE)
mg/L 11/14/2311/14/230.012 EPA 8260D/5030BNDNaphthalene
mg/L 11/14/2311/14/230.012 EPA 8260D/5030BNDToluene
mg/L 11/14/2311/14/230.012 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/L 11/14/2311/14/230.125 EPA 8260B/C /5030A/[CALC]NDGasoline Range Organics
Diesel Range
mg/L 11/14/2311/14/231.0 EPA 8015 CNDDiesel Range Organics
Project Name: Calvinco - IML CtF WO#: 23K0986
www.ChemtechFord.com
Page 6 of 10Page 6 of 10
xx
Chemtech-Ford Laboratories
Serving the Intermountain West Since 1953
Certificate of Analysis
9632 South 500 West
Sandy, UT 84070
O:[phone] F: [phone]
www.ChemtechFord.com
Underwood Environmental Consulting
James McReel
9475 North Silver Creek Road
Park City, UT 84098
PO#:
Receipt:
Date Reported:
Project Name:
OBL
11/13/23 10:00 @ 1.6 °C
11/17/2023
Calvinco - IML
Sample ID: MW-6
Lab ID: 23K0986-06Matrix: Water
Flag(s)Units
Analysis
Date/Time
Date Sampled: 11/12/23 13:15
Preparation
Date/Time
Sampled By: James McReel
Minimum
Reporting
Limit MethodResult
MBTEXn
mg/L 11/14/2311/14/230.005 EPA 8260D/5030BNDBenzene
mg/L 11/14/2311/14/230.012 EPA 8260D/5030BNDEthylbenzene
mg/L 11/14/2311/14/230.005 EPA 8260D/5030BNDMethyl tert-Butyl Ether (MTBE)
mg/L 11/14/2311/14/230.012 EPA 8260D/5030BNDNaphthalene
mg/L 11/14/2311/14/230.012 EPA 8260D/5030BNDToluene
mg/L 11/14/2311/14/230.012 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/L 11/14/2311/14/230.125 EPA 8260B/C /5030A/[CALC]NDGasoline Range Organics
Diesel Range
mg/L 11/14/2311/14/231.0 EPA 8015 CNDDiesel Range Organics
Project Name: Calvinco - IML CtF WO#: 23K0986
www.ChemtechFord.com
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Chemtech-Ford Laboratories
Serving the Intermountain West Since 1953
Certificate of Analysis
9632 South 500 West
Sandy, UT 84070
O:[phone] F: [phone]
www.ChemtechFord.com
Underwood Environmental Consulting
James McReel
9475 North Silver Creek Road
Park City, UT 84098
PO#:
Receipt:
Date Reported:
Project Name:
OBL
11/13/23 10:00 @ 1.6 °C
11/17/2023
Calvinco - IML
Sample ID: MW-7
Lab ID: 23K0986-07Matrix: Water
Flag(s)Units
Analysis
Date/Time
Date Sampled: 11/12/23 14:30
Preparation
Date/Time
Sampled By: James McReel
Minimum
Reporting
Limit MethodResult
MBTEXn
mg/L 11/14/2311/14/230.005 EPA 8260D/5030BNDBenzene
mg/L 11/14/2311/14/230.012 EPA 8260D/5030B0.959Ethylbenzene
mg/L 11/14/2311/14/230.005 EPA 8260D/5030BNDMethyl tert-Butyl Ether (MTBE)
mg/L 11/14/2311/14/230.012 EPA 8260D/5030B0.724Naphthalene
mg/L 11/14/2311/14/230.012 EPA 8260D/5030BNDToluene
mg/L 11/14/2311/14/230.012 EPA 8260D/5030B2.03Xylenes, total
Gasoline Range
mg/L 11/14/2311/14/230.125 EPA 8260B/C /5030A/[CALC]10.6Gasoline Range Organics
Diesel Range
mg/L 11/14/2311/14/231.0 EPA 8015 C7.4Diesel Range Organics
Project Name: Calvinco - IML CtF WO#: 23K0986
www.ChemtechFord.com
Page 8 of 10Page 8 of 10
xx
Chemtech-Ford Laboratories
Serving the Intermountain West Since 1953
Certificate of Analysis
9632 South 500 West
Sandy, UT 84070
O:[phone] F: [phone]
www.ChemtechFord.com
Underwood Environmental Consulting
James McReel
9475 North Silver Creek Road
Park City, UT 84098
PO#:
Receipt:
Date Reported:
Project Name:
OBL
11/13/23 10:00 @ 1.6 °C
11/17/2023
Calvinco - IML
Report Footnotes
Abbreviations
ND = Not detected at the corresponding Minimum Reporting Limit (MRL).
1 mg/L = one milligram per liter or 1 mg/kg = one milligram per kilogram = 1 part per million.
1 ug/L = one microgram per liter or 1 ug/kg = one microgram per kilogram = 1 part per billion.
1 ng/L = one nanogram per liter or 1 ng/kg = one nanogram per kilogram = 1 part per trillion.
On calculated parameters, there may be a slight difference between summing the rounded values shown on the report
vs the unrounded values used in the calculation.
Project Name: Calvinco - IML CtF WO#: 23K0986
www.ChemtechFord.com
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