DERR-2025-004207

Page 1
ATLAS

June 3, 2025

Mr. Hong Lei Tao
Utah Department of Environmental Quality
Division of Environmental Response and Remediation
195 North 1950 West
Salt Lake City, Utah 84114-4840

SUBJECT: Groundwater Monitoring Report
Summit Gas, LLC
20 East Highway 6
Soldier Summit, Utah 84027
Facility ID 1100007
LUST ID NKL
Work Assignment NKL-07

Dear Mr. Tao:

Please find attached the Groundwater Monitoring Report for the above referenced site.

INTRODUCTION

On April 28 and 29, 2025, Atlas Technical Consultants (Atlas) conducted a groundwater
sampling event at the Soldier Summit Gas Station located at 20 Highway 6, Soldier Summit,
Utah (Figure 1). The work was performed on behalf of Summit Gas, LLC, and the Utah
Department Environmental Quality, Division of Environmental Response and Remediation
(DERR) under Work Assignment NKL-07.

On September 25, 2024, two additional monitoring wells were installed in the general vicinity of
MW -1A and MW -11 (see the Monitoring Well Installation and Groundwater Monitoring Report
dated October 30, 2024). These wells are identified as MW -12 and MW -13.

FIELD PARAMETER WELL PURGING PROCEDURES AND CHEMICAL ANALYSIS

The approved work plan included collecting water samples from monitoring wells MW-1A, MW -
2, MW -3A, MW -4A, MW -5, MW -6A, MW -7A, MW -8, MW -10, MW -11, MW -12, and MW -13. Prior
to well purging, groundwater depths were measured in each well using an electronic water
level/free product interface probe. The water level/free product interface probe was
decontaminated between each well with an Alconox detergent wash and tap water rinse.
Following field parameter measurements, the monitoring wells were purged using new, factory-
sealed disposable PVC bailers. All the monitoring wells sampled were purged three well casing
volumes or until dry. Groundwater removed from the wells was poured on the ground surface
and allowed to evaporate. After the purging process, the wells were allowed to recharge to
within 95 percent of the pre-purge water level before groundwater samples were collected. The
samples were transferred to appropriate containers and immediately placed on ice in an
insulated cooler and then transported under chain-of-custody documentation to a Utah-certified
laboratory for analysis. The site map depicting the groundwater monitoring well locations and
surrounding area features is presented as Figure 1.

358 South 700 East, B518
Salt Lake City, Utah 84102
Office: 801.935.4917
www.oneatlas.com

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ATLAS
The groundwater samples were submitted to a State of Utah certified laboratory for methyl tert-
butyl ether (MTBE), benzene, toluene, ethyl benzene, total xylenes, naphthalene (MBTEXN)
and total petroleum hydrocarbons as gasoline (TPH-GRO) using EPA Method 8260, and for
TPH as diesel (TPH-DRO) using EPA Method 8015.

Field Parameter and Chemical Analysis Results
The groundwater elevation data collected from the monitoring wells were utilized to prepare a
groundwater gradient map for the site. The groundwater elevation data indicates groundwater
flows to the south-southeast at a gradient of 0.050 ft/ft between MW-7A and MW-12. The
groundwater gradient map is presented as Figure 2.

Review of the groundwater laboratory data indicated the presence of benzene above the Tier I
Screening Level of 0.3 mg/L in MW-1A (0.786 mg/L), MW -2 (0.623 mg/L), MW -4A (1.590 mg/L),
MW -6A (0.660 mg/L), MW -7A (0.990), MW -11 (0.368 mg/L), and MW-13 (0.682 mg/L). Toluene
and xylene concentrations in MW -1A dropped to below their respective Teir I Screening Levels
during the April 2025 sampling event. TPH-GRO was measured above the Tier I Screening
Level of 10.0 mg/L in MW-1A (13.500 mg/L), MW -2 (13.200 mg/L), MW -4A (11.000 mg/L), MW -
6A (10.300 mg/L), MW -7A (20.500 mg/L), and MW -13 (19.000 mg/L). No other constituents
were measured above their respective Tier I Screening Levels. The groundwater analytical
results are summarized in Table 1 and a copy of the analytical report is included in Appendix A.

CONCLUSIONS AND RECOMMENDATIONS

Review of the April 2025 groundwater sampling event indicate the presence of benzene and
TPH-GRO above their respective Tier I Screening Levels. This was the second and final
groundwater monitoring event scheduled under Work Assignment NKL-07.

Review of the groundwater laboratory data indicate that the benzene concentrations measured
in MW -1A, MW -4A, and MW -6A, have decreased since the October 2024 groundwater
monitoring event; with the most significant decrease in MW -1A (2.910 mg/L to 0.786 mg/L).
However, these benzene concentrations are still above the Tier I screening level of 0.3 mg/L. In
addition, the benzene concentrations measured in MW -2 and MW -7A increased since the
October 2024 groundwater monitoring event, remaining above the Tier I screening levels.

Review of the groundwater laboratory data indicate that the toluene and ethylbenzene
concentrations measured in MW-1A have dropped below their respective Tier 1 screening
levels.

Review of the groundwater laboratory data indicate that the TPH-GRO concentrations
measured in MW -1A, MW -4A, MW -6A, and MW-11 have decreased since the October 2024
groundwater monitoring event. However, these TPH-GRO concentrations are still above the Tier
I Screening Level of 10 mg/L. Monitoring well MW -11 decreased to below the Tier I screening
level (13.700 mg/L to 7.820 mg/L). The TPHGRO concentration measured in MW -2A (5.260
mg/L to 13.200 mg/L), MW -7A (18.400 mg/L to 20.500 mg/L), and MW-13 (13.500 mg/L),
increased since the October 2024 groundwater monitoring event, remaining above the Tier I
screening levels..

Groundwater data from the October 2024 and April 2025 sampling events indicate the presence
of benzene, toluene, xylenes, TPH-GRO, and TPH-DRO above their respective Tier I Screening
Levels. Further delineation of groundwater impacts in the vicinity of MW -13 is necessary. Based
upon review of the data, Atlas recommends that the semi-annual groundwater monitoring
program continue at the site and that one additional monitoring well be installed northwest of
MW -13 to further delineate groundwater impacts.
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ATLAS
Our services consist of professional opinions and recommendations made in accordance with
generally accepted geotechnical and environmental engineering principles and practices. This
warranty is in lieu of all other warranties either expressed or implied. Should you have any
questions, please do not hesitate to call us at [phone].

Sincerely,

Atlas Technical Consultants, LLC
Olaf Questereit Jim Coletta, P.G.
Senior Technician Branch Manager
Utah Certified UST Consultant

FIGURES

TABLES

Page 1 of 2
TABLE 1
GROUNDWATER ANALYTICAL AND ELEVATION DATA SUMMARY
SUMMIT GAS LLC
20 EAST HIGHWAY 6
SOLDIER SUMMIT, UTAH
FACILITY ID 1100007
RELEASE ID NKL
SAMPLE ETHYL-NAPH-
LOCATION DATE BENZENE TOLUENE BENZENE XYLENES MTBE THALENE TPH-GRO TPH-DRO DTW FPT WTE
TOC (ft.)MM/DD/YY (mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(feet)(feet)(feet)
Initial Screening Levels 0.005 1.0 0.7 10 0.2 0.7 1.0 1.0
RBCA Tier 1 Screening 0.3 3.0 4.0 10 0.2 0.7 10 10
MW-1A 12/19/22 7.51 15.4 1.90 9.39 <0.005*0.177 43.1 4.7 7.58 0.00 92.42
100.00 05/30/23 4.31 12.4 2.41 11.4 <0.005 0.137 43.4 3.4 0.00 0.00 100.00
11/09/23 4.66 11.9 2.58 11.1 <0.005 0.181 44.2 5.5 5.89 0.00 94.11
10/08/24 2.910 6.800 2.670 13.200 <0.0200 0.246 75.200 0.0346 J 5.88 0.00 94.12
04/29/25 0.786 0.366 0.703 1.880 <0.0250 0.0364 J 13.500 1.530 1.09 0.00 98.91

MW-2 12/19/22 0.655 0.020 0.167 0.062 <0.005*<0.012 2.63 <1.0 7.28 0.00 91.74
99.02 05/30/23 0.536 0.509 0.205 2.48 <0.005 0.015 7.21 1.1 0.88 0.00 98.14
11/09/23 0.741 0.066 0.304 0.125 <0.005 <0.012 3.38 <1.0 6.02 0.00 93.00
10/08/24 0.320 0.179 0.246 0.0594 <0.00100 0.00359 J 5.260 0.131 6.03 0.00 92.99
04/29/25 0.623 0.236 0.578 1.710 <0.0100 <0.0500 C3 13.200 1.390 1.12 0.00 97.90

MW-3A 12/19/22 <0.005 <0.012 <0.012 <0.012 <0.005*<0.012 <0.125 <1.0 13.87 0.00 86.32
100.19 05/30/23 <0.005 <0.012 <0.012 <0.012 <0.005 <0.012 <0.125 <1.0 2.40 0.00 97.79
11/09/23 <0.005 <0.012 <0.012 <0.012 <0.005 <0.012 <0.125 <1.0 13.07 0.00 87.12
10/08/24 0.00707 B,J <0.00100 <0.00100 <0.00300 <0.00100 <0.00500 J3 0.0316 J 0.0781 J 13.12 0.00 87.07
04/29/25 <0.00100 <0.00100 <0.00100 <0.00300 <0.00100 <0.00500 C3 0.0630 J 0.107 7.37 0.00 92.82

MW-4A 12/19/22 3.20 0.287 0.615 1.84 <0.005*<0.012 7.11 <1.0 8.06 0.00 89.53
97.59 05/30/23 1.86 0.181 0.563 1.49 <0.005 0.012 6.55 <1.0 0.97 0.00 96.62
11/09/23 3.10 0.215 0.638 1.23 <0.005 0.016 6.70 <1.0 6.49 0.00 91.10
10/08/24 1.690 0.186 0.793 1.490 <0.00500 0.251 9.120 0.0316 J 6.37 0.00 91.22
04/29/25 1.590 0.184 0.892 1.530 <0.0500 <0.250 C3 11.000 1.270 2.57 0.00 95.02

MW-5 12/19/22 0.568 0.057 0.436 0.561 <0.005*0.018 6.10 1.4 14.26 0.00 83.82
98.08 05/30/23 0.260 0.155 0.363 0.705 <0.005 0.014 10.4 1.7 4.15 0.00 93.93
11/09/23 0.771 0.065 0.445 0.402 <0.005 0.013 6.45 1.5 13.79 0.00 84.29
10/08/24 0.515 0.0411 0.435 0.291 <0.0100 <0.0500 5.380 16.400 14.23 0.00 83.85
04/29/25 0.295 0.0686 0.314 0.391 <0.0100 <0.0500 C3 7.870 1.980 7.11 0.00 90.97
MW-6A 12/19/22 2.29 6.03 0.815 4.54 <0.005*0.047 16.8 2.8 11.88 0.00 84.80
96.68 05/30/23 0.536 0.528 0.346 1.29 <0.005 0.015 8.57 1.5 3.59 0.00 93.09
11/09/23 1.53 0.260 0.458 0.666 <0.005 0.022 6.78 1.5 10.96 0.00 85.72
10/08/24 1.700 2.200 1.240 5.660 <0.100 0.112 J 30.600 15.600 11.56 0.00 85.12
04/29/25 0.660 0.456 0.547 1.780 <0.0250 0.0349 J 10.300 2.680 5.19 0.00 91.49
MW-7A 12/19/22 2.71 3.14 1.05 6.14 <0.005*0.085 19.2 3.5 11.82 0.00 85.06
96.88 05/30/23 1.36 0.675 1.64 5.95 <0.005 0.089 25.9 4.0 5.01 0.00 91.87
11/09/23 2.10 0.239 1.35 2.44 <0.005 0.073 16.0 4.6 11.50 0.00 85.38
10/08/24 0.953 0.219 1.380 3.050 <0.00500 0.0697 18.400 18.700 11.54 0.00 85.34
04/29/25 0.990 0.146 1.080 2.260 <0.0500 <0.250 C3 20.500 5.000 6.85 0.00 90.03
MW-8 12/19/22 0.031 <0.012 <0.012 <0.012 <0.005*<0.012 <0.125 <1.0 9.45 0.00 87.35
96.80 05/30/23 0.006 <0.012 <0.012 <0.012 <0.005 <0.012 <0.125 <1.0 4.35 0.00 92.45
11/09/23 0.230 <0.012 <0.012 <0.012 <0.005 <0.012 0.573 <1.0 8.81 0.00 87.99
10/08/24 0.159 0.00634 J 0.0111 0.0522 <0.0100 <0.0500 0.0751 B,J 2.800 8.71 0.00 88.09
04/29/25 0.0183 <0.00100 0.00212 0.000210 J <0.00100 <0.00500 0.219 0.0953 J 5.19 0.00 91.61
MW-9 12/19/22
11/09/23
Unable to locate well
Unable to locate well
Page 2 of 2
TABLE 1
GROUNDWATER ANALYTICAL AND ELEVATION DATA SUMMARY
SUMMIT GAS LLC
20 EAST HIGHWAY 6
SOLDIER SUMMIT, UTAH
FACILITY ID 1100007
RELEASE ID NKL
SAMPLE ETHYL-NAPH-
LOCATION DATE BENZENE TOLUENE BENZENE XYLENES MTBE THALENE TPH-GRO TPH-DRO DTW FPT WTE
TOC (ft.)MM/DD/YY (mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(feet)(feet)(feet)
Initial Screening Levels 0.005 1.0 0.7 10 0.2 0.7 1.0 1.0
RBCA Tier 1 Screening 0.3 3.0 4.0 10 0.2 0.7 10 10
MW-10 12/19/22 <0.005 <0.012 <0.012 <0.012 <0.005*<0.012 <0.125 <1.0 14.94 0.00 83.75
98.69 05/30/23 <0.005 <0.012 <0.012 <0.012 <0.005 <0.012 <0.125 <1.0 5.59 0.00 93.10
11/09/23 <0.005 <0.012 <0.012 <0.012 <0.005 <0.012 <0.125 1.1 14.21 0.00 84.48
10/08/24 0.000256 B,J <0.00100 <0.00100 <0.00300 <0.00100 <0.00500 0.139 B 23.000 14.34 0.00 84.35
04/29/25 0.000285 J <0.00100 <0.00100 <0.00300 <0.00100 <0.00500 C3 0.0897 J 0.240 6.85 0.00 91.84
MW-11 12/19/22 1.78 0.486 1.04 1.91 <0.005 0.038 95.7 1.7 7.57 0.00 92.33
99.90 05/30/23 0.817 1.37 0.840 3.87 <0.005 0.020 14.6 1.6 0.00**0.00 99.90
11/09/23 1.44 0.283 0.750 1.30 <0.005 0.014 13.6 1.5 6.00 0.00 93.90
100.65 10/08/24 0.832 0.184 0.848 1.500 <0.0100 0.0192 J 13.700 0.698 5.94 0.00 94.71
04/29/25 0.368 0.113 0.351 0.647 <0.0100 <0.0500 C3 7.820 0.616 0.80 0.00 99.85
MW-12 10/08/24 0.00423 <0.00100 <0.00100 <0.00300 <0.00100 <0.00500 0.0677 B,J 0.0296 J 6.96 0.00 94.11
101.07 04/29/25 0.00158 <0.00100 <0.00100 <0.00300 <0.00100 <0.00500 <0.100 <0.100 0.89 0.00 100.18
MW-13 10/08/24 1.350 0.583 0.902 3.000 <0.00500 0.0185 J 13.500 0.498 11.37 0.00 94.11
105.48 04/29/25 0.682 0.308 0.933 2.280 <0.0250 <0.125 C3 19.000 1.360 6.04 0.00 99.44
Notes:
TPH -GRO = Total Petroleum Hydrocarbons as Gasoline WTE = Water Table Elevation
TOC = Top of Casing, Monitoring Well Surveyed Elevation RBCA = Risk Based Corrective Action
< = Not detected above the laboratory reporting limit mg/L = Milligrams per Liter
* = J-Low-L - Estimated low due to low recovery of LCS DTW = Depth to Water
TPH -DRO = Total Petroleum Hydrocarbons as Diesel FPT = Free Product Thickness
Bold numbers indicate an exceedence of the Tier I Screening Level ** = Groundwater was flowing out of the casing of MW-11
C3 = The reported concentration is an estimate. The continuing calibration standard associated with this data responded low. Method sensitivity check is acceptable.

APPENDIX A
LABORATORY ANALYTICAL REPORT

ANALYTICAL REPORT
May 12, 2025
One Atlas
Sample Delivery Group:L1853519
Samples Received:04/30/2025
Project Number:
Description:Summit Gas Well Sampling
Report To:Jim Coletta
1775 South 4130 West, Ste A
Salt Lake City, UT 84104
Entire Report Reviewed By:
May 12, 2025
[Preliminary Report]
Daphne Richards
Project Manager
Results relate only to the items tested or calibrated and are reported as rounded values. This test report shall not be
reproduced, except in full, without written approval of the laboratory. Where applicable, sampling conducted by Pace
Analytical National is performed per guidance provided in laboratory standard operating procedures ENV-SOP-MTJL-0067 and
ENV-SOP-MTJL-0068. Where sampling conducted by the customer, results relate to the accuracy of the information provided,
and as the samples are received.
Pace Analytical National
12065 Lebanon Rd Mount Juliet, TN 37122 615-758-5858 800-767-5859 mydata.pacelabs.com
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
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May 12, 2025
Daphne Richards
Project Manager
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
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TABLE OF CONTENTS
Cp: Cover Page 1
Tc: Table of Contents 2
Ss: Sample Summary 3
Cn: Case Narrative 6
Sr: Sample Results 7
MW-1A L1853519-01 7
MW-2 L1853519-02 8
MW-3A L1853519-03 9
MW-4A L1853519-04 10
MW-5 L1853519-05 11
MW-6A L1853519-06 12
MW-7A L1853519-07 13
MW-8 L1853519-08 14
MW-10 L1853519-09 15
MW-11 L1853519-10 16
MW-12 L1853519-11 17
MW-13 L1853519-12 18
TRIP BLANK L1853519-13 19
Qc: Quality Control Summary 20
Volatile Organic Compounds (GC) by Method 8015D/GRO 20
Volatile Organic Compounds (GC/MS) by Method 8260B 23
Semi-Volatile Organic Compounds (GC) by Method 8015D 25
Gl: Glossary of Terms 27
Al: Accreditations & Locations 28
Sc: Sample Chain of Custody 29
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
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SAMPLE SUMMARY
Collected by Collected date/time Received date/time
MW-1A L1853519-01 Olaf Questereit 04/29/25 09:00 04/30/25 08:00
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (GC) by Method 8015D/GRO WG2504955 20 05/02/25 20:46 05/02/25 20:46 CDD Mt. Juliet, TN
Volatile Organic Compounds (GC/MS) by Method 8260B WG2508574 25 05/07/25 14:32 05/07/25 14:32 DWR Mt. Juliet, TN
Semi-Volatile Organic Compounds (GC) by Method 8015D WG2506730 1 05/06/25 16:45 05/08/25 21:26 MAA Mt. Juliet, TN
Collected by Collected date/time Received date/time
MW-2 L1853519-02 Olaf Questereit 04/29/25 08:45 04/30/25 08:00
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (GC) by Method 8015D/GRO WG2509376 10 05/08/25 03:52 05/08/25 03:52 ADM Mt. Juliet, TN
Volatile Organic Compounds (GC/MS) by Method 8260B WG2505737 10 05/03/25 01:54 05/03/25 01:54 DYW Mt. Juliet, TN
Semi-Volatile Organic Compounds (GC) by Method 8015D WG2506730 1 05/06/25 16:45 05/08/25 21:50 MAA Mt. Juliet, TN
Collected by Collected date/time Received date/time
MW-3A L1853519-03 Olaf Questereit 04/29/25 10:00 04/30/25 08:00
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (GC) by Method 8015D/GRO WG2504955 1 05/02/25 16:53 05/02/25 16:53 CDD Mt. Juliet, TN
Volatile Organic Compounds (GC/MS) by Method 8260B WG2505737 1 05/02/25 22:38 05/02/25 22:38 DYW Mt. Juliet, TN
Semi-Volatile Organic Compounds (GC) by Method 8015D WG2506730 1 05/06/25 16:45 05/08/25 22:15 MAA Mt. Juliet, TN
Collected by Collected date/time Received date/time
MW-4A L1853519-04 Olaf Questereit 04/29/25 08:30 04/30/25 08:00
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (GC) by Method 8015D/GRO WG2504955 5 05/02/25 21:10 05/02/25 21:10 CDD Mt. Juliet, TN
Volatile Organic Compounds (GC/MS) by Method 8260B WG2505737 50 05/03/25 02:15 05/03/25 02:15 DYW Mt. Juliet, TN
Semi-Volatile Organic Compounds (GC) by Method 8015D WG2506730 1 05/06/25 16:45 05/08/25 22:39 MAA Mt. Juliet, TN
Collected by Collected date/time Received date/time
MW-5 L1853519-05 Olaf Questereit 04/29/25 10:30 04/30/25 08:00
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (GC) by Method 8015D/GRO WG2504955 1 05/02/25 17:16 05/02/25 17:16 CDD Mt. Juliet, TN
Volatile Organic Compounds (GC/MS) by Method 8260B WG2505737 10 05/03/25 02:37 05/03/25 02:37 DYW Mt. Juliet, TN
Semi-Volatile Organic Compounds (GC) by Method 8015D WG2506730 1 05/06/25 16:45 05/08/25 23:03 MAA Mt. Juliet, TN
Collected by Collected date/time Received date/time
MW-6A L1853519-06 Olaf Questereit 04/29/25 10:45 04/30/25 08:00
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (GC) by Method 8015D/GRO WG2504955 10 05/02/25 21:33 05/02/25 21:33 CDD Mt. Juliet, TN
Volatile Organic Compounds (GC/MS) by Method 8260B WG2508574 25 05/07/25 14:53 05/07/25 14:53 DWR Mt. Juliet, TN
Semi-Volatile Organic Compounds (GC) by Method 8015D WG2506730 1 05/06/25 16:45 05/08/25 23:27 MAA Mt. Juliet, TN
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
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SAMPLE SUMMARY
Collected by Collected date/time Received date/time
MW-7A L1853519-07 Olaf Questereit 04/29/25 11:00 04/30/25 08:00
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (GC) by Method 8015D/GRO WG2504955 5 05/02/25 21:57 05/02/25 21:57 CDD Mt. Juliet, TN
Volatile Organic Compounds (GC/MS) by Method 8260B WG2505737 50 05/03/25 03:21 05/03/25 03:21 DYW Mt. Juliet, TN
Semi-Volatile Organic Compounds (GC) by Method 8015D WG2506730 1 05/06/25 16:45 05/09/25 18:22 MAA Mt. Juliet, TN
Collected by Collected date/time Received date/time
MW-8 L1853519-08 Olaf Questereit 04/29/25 11:15 04/30/25 08:00
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (GC) by Method 8015D/GRO WG2509376 1 05/08/25 03:32 05/08/25 03:32 ADM Mt. Juliet, TN
Volatile Organic Compounds (GC/MS) by Method 8260B WG2508574 1 05/07/25 14:11 05/07/25 14:11 DWR Mt. Juliet, TN
Semi-Volatile Organic Compounds (GC) by Method 8015D WG2506730 1 05/06/25 16:45 05/09/25 19:10 MAA Mt. Juliet, TN
Collected by Collected date/time Received date/time
MW-10 L1853519-09 Olaf Questereit 04/29/25 10:15 04/30/25 08:00
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (GC) by Method 8015D/GRO WG2504955 1 05/02/25 18:03 05/02/25 18:03 CDD Mt. Juliet, TN
Volatile Organic Compounds (GC/MS) by Method 8260B WG2505737 1 05/02/25 23:00 05/02/25 23:00 DYW Mt. Juliet, TN
Semi-Volatile Organic Compounds (GC) by Method 8015D WG2506730 1 05/06/25 16:45 05/09/25 19:35 MAA Mt. Juliet, TN
Collected by Collected date/time Received date/time
MW-11 L1853519-10 Olaf Questereit 04/29/25 09:15 04/30/25 08:00
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (GC) by Method 8015D/GRO WG2504937 10 05/02/25 06:37 05/02/25 06:37 CDD Mt. Juliet, TN
Volatile Organic Compounds (GC/MS) by Method 8260B WG2505737 10 05/03/25 04:04 05/03/25 04:04 DYW Mt. Juliet, TN
Semi-Volatile Organic Compounds (GC) by Method 8015D WG2506730 1 05/06/25 16:45 05/09/25 19:59 MAA Mt. Juliet, TN
Collected by Collected date/time Received date/time
MW-12 L1853519-11 Olaf Questereit 04/29/25 09:30 04/30/25 08:00
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (GC) by Method 8015D/GRO WG2504937 1 05/02/25 06:17 05/02/25 06:17 CDD Mt. Juliet, TN
Volatile Organic Compounds (GC/MS) by Method 8260B WG2505737 1 05/02/25 23:22 05/02/25 23:22 DYW Mt. Juliet, TN
Semi-Volatile Organic Compounds (GC) by Method 8015D WG2506730 1 05/06/25 16:45 05/09/25 20:23 MAA Mt. Juliet, TN
Collected by Collected date/time Received date/time
MW-13 L1853519-12 Olaf Questereit 04/29/25 09:45 04/30/25 08:00
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (GC) by Method 8015D/GRO WG2504937 5 05/02/25 06:58 05/02/25 06:58 CDD Mt. Juliet, TN
Volatile Organic Compounds (GC/MS) by Method 8260B WG2505737 25 05/03/25 04:26 05/03/25 04:26 DYW Mt. Juliet, TN
Semi-Volatile Organic Compounds (GC) by Method 8015D WG2507501 1 05/05/25 22:18 05/06/25 03:38 MAA Mt. Juliet, TN
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
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SAMPLE SUMMARY
Collected by Collected date/time Received date/time
TRIP BLANK L1853519-13 Olaf Questereit 04/29/25 00:00 04/30/25 08:00
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (GC/MS) by Method 8260B WG2505737 1 05/02/25 22:16 05/02/25 22:16 DYW Mt. Juliet, TN
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
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CASE NARRATIVE
All sample aliquots were received at the correct temperature, in the proper containers, with the
appropriate preservatives, and within method specified holding times, unless qualified or notated within
the report. Where applicable, all MDL (LOD) and RDL (LOQ) values reported for environmental samples
have been corrected for the dilution factor used in the analysis. All Method and Batch Quality Control
are within established criteria except where addressed in this case narrative, a non-conformance form
or properly qualified within the sample results. By my digital signature below, I affirm to the best of my
knowledge, all problems/anomalies observed by the laboratory as having the potential to affect the
quality of the data have been identified by the laboratory, and no information or data have been
knowingly withheld that would affect the quality of the data.
[Preliminary Report]
Daphne Richards
Project Manager
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
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Daphne Richards
Project Manager
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SAMPLE RESULTS - 01
L1853519
MW-1A
Collected date/time: 04/29/25 09:00
Volatile Organic Compounds (GC) by Method 8015D/GRO
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
TPH (GC/FID) Low Fraction 13500 628 2000 20 05/02/2025 20:46 WG2504955
(S)
a,a,a-Trifluorotoluene(FID)85.8 78.0-120 05/02/2025 20:46 WG2504955
Volatile Organic Compounds (GC/MS) by Method 8260B
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
Benzene 786 2.35 25.0 25 05/07/2025 14:32 WG2508574
Toluene 366 6.95 25.0 25 05/07/2025 14:32 WG2508574
Ethylbenzene 703 3.43 25.0 25 05/07/2025 14:32 WG2508574
Total Xylenes 1880 4.35 75.0 25 05/07/2025 14:32 WG2508574
Methyl tert-butyl ether U 2.53 25.0 25 05/07/2025 14:32 WG2508574
Naphthalene 36.4 J 25.0 125 25 05/07/2025 14:32 WG2508574
(S) Toluene-d8 92.6 80.0-120 05/07/2025 14:32 WG2508574
(S) 4-Bromofluorobenzene 95.4 77.0-126 05/07/2025 14:32 WG2508574
(S) 1,2-Dichloroethane-d4 121 70.0-130 05/07/2025 14:32 WG2508574
Semi-Volatile Organic Compounds (GC) by Method 8015D
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
TPH (GC/FID) High Fraction 1530 60.5 100 1 05/08/2025 21:26 WG2506730
(S) o-Terphenyl 98.9 52.0-156 05/08/2025 21:26 WG2506730
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
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SAMPLE RESULTS - 02
L1853519
MW-2
Collected date/time: 04/29/25 08:45
Volatile Organic Compounds (GC) by Method 8015D/GRO
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
TPH (GC/FID) Low Fraction 13200 314 1000 10 05/08/2025 03:52 WG2509376
(S)
a,a,a-Trifluorotoluene(FID)96.1 78.0-120 05/08/2025 03:52 WG2509376
Volatile Organic Compounds (GC/MS) by Method 8260B
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
Benzene 623 0.941 10.0 10 05/03/2025 01:54 WG2505737
Toluene 236 2.78 10.0 10 05/03/2025 01:54 WG2505737
Ethylbenzene 578 1.37 10.0 10 05/03/2025 01:54 WG2505737
Total Xylenes 1710 1.74 30.0 10 05/03/2025 01:54 WG2505737
Methyl tert-butyl ether U 1.01 10.0 10 05/03/2025 01:54 WG2505737
Naphthalene U C3 10.0 50.0 10 05/03/2025 01:54 WG2505737
(S) Toluene-d8 97.6 80.0-120 05/03/2025 01:54 WG2505737
(S) 4-Bromofluorobenzene 94.4 77.0-126 05/03/2025 01:54 WG2505737
(S) 1,2-Dichloroethane-d4 99.8 70.0-130 05/03/2025 01:54 WG2505737
Semi-Volatile Organic Compounds (GC) by Method 8015D
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
TPH (GC/FID) High Fraction 1390 60.5 100 1 05/08/2025 21:50 WG2506730
(S) o-Terphenyl 97.9 52.0-156 05/08/2025 21:50 WG2506730
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
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SAMPLE RESULTS - 03
L1853519
MW-3A
Collected date/time: 04/29/25 10:00
Volatile Organic Compounds (GC) by Method 8015D/GRO
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
TPH (GC/FID) Low Fraction 63.0 J 31.4 100 1 05/02/2025 16:53 WG2504955
(S)
a,a,a-Trifluorotoluene(FID)87.5 78.0-120 05/02/2025 16:53 WG2504955
Volatile Organic Compounds (GC/MS) by Method 8260B
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
Benzene U 0.0941 1.00 1 05/02/2025 22:38 WG2505737
Toluene U 0.278 1.00 1 05/02/2025 22:38 WG2505737
Ethylbenzene U 0.137 1.00 1 05/02/2025 22:38 WG2505737
Total Xylenes U 0.174 3.00 1 05/02/2025 22:38 WG2505737
Methyl tert-butyl ether U 0.101 1.00 1 05/02/2025 22:38 WG2505737
Naphthalene U C3 1.00 5.00 1 05/02/2025 22:38 WG2505737
(S) Toluene-d8 103 80.0-120 05/02/2025 22:38 WG2505737
(S) 4-Bromofluorobenzene 97.6 77.0-126 05/02/2025 22:38 WG2505737
(S) 1,2-Dichloroethane-d4 106 70.0-130 05/02/2025 22:38 WG2505737
Semi-Volatile Organic Compounds (GC) by Method 8015D
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
TPH (GC/FID) High Fraction 107 60.5 100 1 05/08/2025 22:15 WG2506730
(S) o-Terphenyl 90.0 52.0-156 05/08/2025 22:15 WG2506730
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
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SAMPLE RESULTS - 04
L1853519
MW-4A
Collected date/time: 04/29/25 08:30
Volatile Organic Compounds (GC) by Method 8015D/GRO
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
TPH (GC/FID) Low Fraction 11000 157 500 5 05/02/2025 21:10 WG2504955
(S)
a,a,a-Trifluorotoluene(FID)83.2 78.0-120 05/02/2025 21:10 WG2504955
Volatile Organic Compounds (GC/MS) by Method 8260B
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
Benzene 1590 4.71 50.0 50 05/03/2025 02:15 WG2505737
Toluene 184 13.9 50.0 50 05/03/2025 02:15 WG2505737
Ethylbenzene 892 6.85 50.0 50 05/03/2025 02:15 WG2505737
Total Xylenes 1530 8.70 150 50 05/03/2025 02:15 WG2505737
Methyl tert-butyl ether U 5.05 50.0 50 05/03/2025 02:15 WG2505737
Naphthalene U C3 50.0 250 50 05/03/2025 02:15 WG2505737
(S) Toluene-d8 96.5 80.0-120 05/03/2025 02:15 WG2505737
(S) 4-Bromofluorobenzene 95.0 77.0-126 05/03/2025 02:15 WG2505737
(S) 1,2-Dichloroethane-d4 97.5 70.0-130 05/03/2025 02:15 WG2505737
Semi-Volatile Organic Compounds (GC) by Method 8015D
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
TPH (GC/FID) High Fraction 1270 60.5 100 1 05/08/2025 22:39 WG2506730
(S) o-Terphenyl 99.5 52.0-156 05/08/2025 22:39 WG2506730
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
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SAMPLE RESULTS - 05
L1853519
MW-5
Collected date/time: 04/29/25 10:30
Volatile Organic Compounds (GC) by Method 8015D/GRO
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
TPH (GC/FID) Low Fraction 7870 31.4 100 1 05/02/2025 17:16 WG2504955
(S)
a,a,a-Trifluorotoluene(FID)104 78.0-120 05/02/2025 17:16 WG2504955
Volatile Organic Compounds (GC/MS) by Method 8260B
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
Benzene 295 0.941 10.0 10 05/03/2025 02:37 WG2505737
Toluene 68.6 2.78 10.0 10 05/03/2025 02:37 WG2505737
Ethylbenzene 314 1.37 10.0 10 05/03/2025 02:37 WG2505737
Total Xylenes 391 1.74 30.0 10 05/03/2025 02:37 WG2505737
Methyl tert-butyl ether U 1.01 10.0 10 05/03/2025 02:37 WG2505737
Naphthalene U C3 10.0 50.0 10 05/03/2025 02:37 WG2505737
(S) Toluene-d8 98.1 80.0-120 05/03/2025 02:37 WG2505737
(S) 4-Bromofluorobenzene 95.0 77.0-126 05/03/2025 02:37 WG2505737
(S) 1,2-Dichloroethane-d4 100 70.0-130 05/03/2025 02:37 WG2505737
Semi-Volatile Organic Compounds (GC) by Method 8015D
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
TPH (GC/FID) High Fraction 1980 60.5 100 1 05/08/2025 23:03 WG2506730
(S) o-Terphenyl 102 52.0-156 05/08/2025 23:03 WG2506730
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
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SAMPLE RESULTS - 06
L1853519
MW-6A
Collected date/time: 04/29/25 10:45
Volatile Organic Compounds (GC) by Method 8015D/GRO
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
TPH (GC/FID) Low Fraction 10300 314 1000 10 05/02/2025 21:33 WG2504955
(S)
a,a,a-Trifluorotoluene(FID)90.7 78.0-120 05/02/2025 21:33 WG2504955
Volatile Organic Compounds (GC/MS) by Method 8260B
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
Benzene 660 2.35 25.0 25 05/07/2025 14:53 WG2508574
Toluene 456 6.95 25.0 25 05/07/2025 14:53 WG2508574
Ethylbenzene 547 3.43 25.0 25 05/07/2025 14:53 WG2508574
Total Xylenes 1780 4.35 75.0 25 05/07/2025 14:53 WG2508574
Methyl tert-butyl ether U 2.53 25.0 25 05/07/2025 14:53 WG2508574
Naphthalene 34.9 J 25.0 125 25 05/07/2025 14:53 WG2508574
(S) Toluene-d8 95.0 80.0-120 05/07/2025 14:53 WG2508574
(S) 4-Bromofluorobenzene 97.0 77.0-126 05/07/2025 14:53 WG2508574
(S) 1,2-Dichloroethane-d4 118 70.0-130 05/07/2025 14:53 WG2508574
Semi-Volatile Organic Compounds (GC) by Method 8015D
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
TPH (GC/FID) High Fraction 2680 60.5 100 1 05/08/2025 23:27 WG2506730
(S) o-Terphenyl 105 52.0-156 05/08/2025 23:27 WG2506730
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
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SAMPLE RESULTS - 07
L1853519
MW-7A
Collected date/time: 04/29/25 11:00
Volatile Organic Compounds (GC) by Method 8015D/GRO
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
TPH (GC/FID) Low Fraction 20500 157 500 5 05/02/2025 21:57 WG2504955
(S)
a,a,a-Trifluorotoluene(FID)96.9 78.0-120 05/02/2025 21:57 WG2504955
Volatile Organic Compounds (GC/MS) by Method 8260B
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
Benzene 990 4.71 50.0 50 05/03/2025 03:21 WG2505737
Toluene 146 13.9 50.0 50 05/03/2025 03:21 WG2505737
Ethylbenzene 1080 6.85 50.0 50 05/03/2025 03:21 WG2505737
Total Xylenes 2260 8.70 150 50 05/03/2025 03:21 WG2505737
Methyl tert-butyl ether U 5.05 50.0 50 05/03/2025 03:21 WG2505737
Naphthalene U C3 50.0 250 50 05/03/2025 03:21 WG2505737
(S) Toluene-d8 97.1 80.0-120 05/03/2025 03:21 WG2505737
(S) 4-Bromofluorobenzene 94.9 77.0-126 05/03/2025 03:21 WG2505737
(S) 1,2-Dichloroethane-d4 101 70.0-130 05/03/2025 03:21 WG2505737
Semi-Volatile Organic Compounds (GC) by Method 8015D
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
TPH (GC/FID) High Fraction 5000 60.5 100 1 05/09/2025 18:22 WG2506730
(S) o-Terphenyl 100 52.0-156 05/09/2025 18:22 WG2506730
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
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SAMPLE RESULTS - 08
L1853519
MW-8
Collected date/time: 04/29/25 11:15
Volatile Organic Compounds (GC) by Method 8015D/GRO
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
TPH (GC/FID) Low Fraction 219 31.4 100 1 05/08/2025 03:32 WG2509376
(S)
a,a,a-Trifluorotoluene(FID)103 78.0-120 05/08/2025 03:32 WG2509376
Volatile Organic Compounds (GC/MS) by Method 8260B
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
Benzene 18.3 0.0941 1.00 1 05/07/2025 14:11 WG2508574
Toluene U 0.278 1.00 1 05/07/2025 14:11 WG2508574
Ethylbenzene 2.12 0.137 1.00 1 05/07/2025 14:11 WG2508574
Total Xylenes 0.210 J 0.174 3.00 1 05/07/2025 14:11 WG2508574
Methyl tert-butyl ether U 0.101 1.00 1 05/07/2025 14:11 WG2508574
Naphthalene U 1.00 5.00 1 05/07/2025 14:11 WG2508574
(S) Toluene-d8 94.7 80.0-120 05/07/2025 14:11 WG2508574
(S) 4-Bromofluorobenzene 93.0 77.0-126 05/07/2025 14:11 WG2508574
(S) 1,2-Dichloroethane-d4 121 70.0-130 05/07/2025 14:11 WG2508574
Semi-Volatile Organic Compounds (GC) by Method 8015D
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
TPH (GC/FID) High Fraction 95.3 J 60.5 100 1 05/09/2025 19:10 WG2506730
(S) o-Terphenyl 92.1 52.0-156 05/09/2025 19:10 WG2506730
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
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SAMPLE RESULTS - 09
L1853519
MW-10
Collected date/time: 04/29/25 10:15
Volatile Organic Compounds (GC) by Method 8015D/GRO
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
TPH (GC/FID) Low Fraction 89.7 J 31.4 100 1 05/02/2025 18:03 WG2504955
(S)
a,a,a-Trifluorotoluene(FID)88.3 78.0-120 05/02/2025 18:03 WG2504955
Volatile Organic Compounds (GC/MS) by Method 8260B
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
Benzene 0.285 J 0.0941 1.00 1 05/02/2025 23:00 WG2505737
Toluene U 0.278 1.00 1 05/02/2025 23:00 WG2505737
Ethylbenzene U 0.137 1.00 1 05/02/2025 23:00 WG2505737
Total Xylenes U 0.174 3.00 1 05/02/2025 23:00 WG2505737
Methyl tert-butyl ether U 0.101 1.00 1 05/02/2025 23:00 WG2505737
Naphthalene U C3 1.00 5.00 1 05/02/2025 23:00 WG2505737
(S) Toluene-d8 112 80.0-120 05/02/2025 23:00 WG2505737
(S) 4-Bromofluorobenzene 97.8 77.0-126 05/02/2025 23:00 WG2505737
(S) 1,2-Dichloroethane-d4 102 70.0-130 05/02/2025 23:00 WG2505737
Semi-Volatile Organic Compounds (GC) by Method 8015D
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
TPH (GC/FID) High Fraction 240 60.5 100 1 05/09/2025 19:35 WG2506730
(S) o-Terphenyl 96.3 52.0-156 05/09/2025 19:35 WG2506730
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
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ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
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SAMPLE RESULTS - 10
L1853519
MW-11
Collected date/time: 04/29/25 09:15
Volatile Organic Compounds (GC) by Method 8015D/GRO
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
TPH (GC/FID) Low Fraction 7820 314 1000 10 05/02/2025 06:37 WG2504937
(S)
a,a,a-Trifluorotoluene(FID)99.9 78.0-120 05/02/2025 06:37 WG2504937
Volatile Organic Compounds (GC/MS) by Method 8260B
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
Benzene 368 0.941 10.0 10 05/03/2025 04:04 WG2505737
Toluene 113 2.78 10.0 10 05/03/2025 04:04 WG2505737
Ethylbenzene 351 1.37 10.0 10 05/03/2025 04:04 WG2505737
Total Xylenes 647 1.74 30.0 10 05/03/2025 04:04 WG2505737
Methyl tert-butyl ether U 1.01 10.0 10 05/03/2025 04:04 WG2505737
Naphthalene U C3 10.0 50.0 10 05/03/2025 04:04 WG2505737
(S) Toluene-d8 96.2 80.0-120 05/03/2025 04:04 WG2505737
(S) 4-Bromofluorobenzene 91.5 77.0-126 05/03/2025 04:04 WG2505737
(S) 1,2-Dichloroethane-d4 98.1 70.0-130 05/03/2025 04:04 WG2505737
Semi-Volatile Organic Compounds (GC) by Method 8015D
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
TPH (GC/FID) High Fraction 616 60.5 100 1 05/09/2025 19:59 WG2506730
(S) o-Terphenyl 96.8 52.0-156 05/09/2025 19:59 WG2506730
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
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ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
One Atlas L1853519 05/12/25 14:57 16 of 30
SAMPLE RESULTS - 11
L1853519
MW-12
Collected date/time: 04/29/25 09:30
Volatile Organic Compounds (GC) by Method 8015D/GRO
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
TPH (GC/FID) Low Fraction U 31.4 100 1 05/02/2025 06:17 WG2504937
(S)
a,a,a-Trifluorotoluene(FID)103 78.0-120 05/02/2025 06:17 WG2504937
Volatile Organic Compounds (GC/MS) by Method 8260B
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
Benzene 1.58 0.0941 1.00 1 05/02/2025 23:22 WG2505737
Toluene U 0.278 1.00 1 05/02/2025 23:22 WG2505737
Ethylbenzene U 0.137 1.00 1 05/02/2025 23:22 WG2505737
Total Xylenes U 0.174 3.00 1 05/02/2025 23:22 WG2505737
Methyl tert-butyl ether U 0.101 1.00 1 05/02/2025 23:22 WG2505737
Naphthalene U C3 1.00 5.00 1 05/02/2025 23:22 WG2505737
(S) Toluene-d8 103 80.0-120 05/02/2025 23:22 WG2505737
(S) 4-Bromofluorobenzene 98.9 77.0-126 05/02/2025 23:22 WG2505737
(S) 1,2-Dichloroethane-d4 103 70.0-130 05/02/2025 23:22 WG2505737
Semi-Volatile Organic Compounds (GC) by Method 8015D
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
TPH (GC/FID) High Fraction U 60.5 100 1 05/09/2025 20:23 WG2506730
(S) o-Terphenyl 86.8 52.0-156 05/09/2025 20:23 WG2506730
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
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SAMPLE RESULTS - 12
L1853519
MW-13
Collected date/time: 04/29/25 09:45
Volatile Organic Compounds (GC) by Method 8015D/GRO
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
TPH (GC/FID) Low Fraction 19000 157 500 5 05/02/2025 06:58 WG2504937
(S)
a,a,a-Trifluorotoluene(FID)94.7 78.0-120 05/02/2025 06:58 WG2504937
Volatile Organic Compounds (GC/MS) by Method 8260B
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
Benzene 682 2.35 25.0 25 05/03/2025 04:26 WG2505737
Toluene 308 6.95 25.0 25 05/03/2025 04:26 WG2505737
Ethylbenzene 933 3.43 25.0 25 05/03/2025 04:26 WG2505737
Total Xylenes 2280 4.35 75.0 25 05/03/2025 04:26 WG2505737
Methyl tert-butyl ether U 2.53 25.0 25 05/03/2025 04:26 WG2505737
Naphthalene U C3 25.0 125 25 05/03/2025 04:26 WG2505737
(S) Toluene-d8 99.3 80.0-120 05/03/2025 04:26 WG2505737
(S) 4-Bromofluorobenzene 94.9 77.0-126 05/03/2025 04:26 WG2505737
(S) 1,2-Dichloroethane-d4 102 70.0-130 05/03/2025 04:26 WG2505737
Semi-Volatile Organic Compounds (GC) by Method 8015D
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
TPH (GC/FID) High Fraction 1360 60.5 100 1 05/06/2025 03:38 WG2507501
(S) o-Terphenyl 82.1 52.0-156 05/06/2025 03:38 WG2507501
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
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SAMPLE RESULTS - 13
L1853519
TRIP BLANK
Collected date/time: 04/29/25 00:00
Volatile Organic Compounds (GC/MS) by Method 8260B
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
Benzene U 0.0941 1.00 1 05/02/2025 22:16 WG2505737
Toluene U 0.278 1.00 1 05/02/2025 22:16 WG2505737
Ethylbenzene U 0.137 1.00 1 05/02/2025 22:16 WG2505737
Total Xylenes U 0.174 3.00 1 05/02/2025 22:16 WG2505737
Methyl tert-butyl ether U 0.101 1.00 1 05/02/2025 22:16 WG2505737
Naphthalene U C3 1.00 5.00 1 05/02/2025 22:16 WG2505737
(S) Toluene-d8 103 80.0-120 05/02/2025 22:16 WG2505737
(S) 4-Bromofluorobenzene 96.8 77.0-126 05/02/2025 22:16 WG2505737
(S) 1,2-Dichloroethane-d4 99.7 70.0-130 05/02/2025 22:16 WG2505737
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
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QUALITY CONTROL SUMMARYWG2504937
Volatile Organic Compounds (GC) by Method 8015D/GRO L1853519-10,11,12
Method Blank (MB)
(MB) R4210247-2 05/01/25 23:40
MB Result MB Qualifier MB MDL MB RDL
Analyte ug/l ug/l ug/l
TPH (GC/FID) Low Fraction U 31.4 100
(S)
a,a,a-Trifluorotoluene(FID)103 78.0-120
Laboratory Control Sample (LCS)
(LCS) R4210247-1 05/01/25 21:52
Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier
Analyte ug/l ug/l %%
TPH (GC/FID) Low Fraction 5000 5210 104 72.0-127
(S)
a,a,a-Trifluorotoluene(FID) 108 78.0-120
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
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QUALITY CONTROL SUMMARYWG2504955
Volatile Organic Compounds (GC) by Method 8015D/GRO L1853519-01,03,04,05,06,07,09
Method Blank (MB)
(MB) R4211113-2 05/02/25 15:16
MB Result MB Qualifier MB MDL MB RDL
Analyte ug/l ug/l ug/l
TPH (GC/FID) Low Fraction U 31.4 100
(S)
a,a,a-Trifluorotoluene(FID)88.3 78.0-120
Laboratory Control Sample (LCS)
(LCS) R4211113-1 05/02/25 14:08
Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier
Analyte ug/l ug/l %%
TPH (GC/FID) Low Fraction 5000 4730 94.6 72.0-127
(S)
a,a,a-Trifluorotoluene(FID) 94.4 78.0-120
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
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QUALITY CONTROL SUMMARYWG2509376
Volatile Organic Compounds (GC) by Method 8015D/GRO L1853519-02,08
Method Blank (MB)
(MB) R4211723-3 05/07/25 21:30
MB Result MB Qualifier MB MDL MB RDL
Analyte ug/l ug/l ug/l
TPH (GC/FID) Low Fraction U 31.4 100
(S)
a,a,a-Trifluorotoluene(FID)103 78.0-120
Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD)
(LCS) R4211723-1 05/07/25 19:22 • (LCSD) R4211723-2 05/07/25 19:59
Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits
Analyte ug/l ug/l ug/l %%%%%
TPH (GC/FID) Low Fraction 5000 4920 5010 98.4 100 72.0-127 1.81 20
(S)
a,a,a-Trifluorotoluene(FID) 105 105 78.0-120
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
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QUALITY CONTROL SUMMARYWG2505737
Volatile Organic Compounds (GC/MS) by Method 8260B L1853519-02,03,04,05,07,09,10,11,12,13
Method Blank (MB)
(MB) R4210640-5 05/02/25 21:55
MB Result MB Qualifier MB MDL MB RDL
Analyte ug/l ug/l ug/l
Benzene U 0.0941 1.00
Toluene U 0.278 1.00
Ethylbenzene U 0.137 1.00
Total Xylenes U 0.174 3.00
Methyl tert-butyl ether U 0.101 1.00
Naphthalene U 1.00 5.00
(S) Toluene-d8 102 80.0-120
(S) 4-Bromofluorobenzene 96.9 77.0-126
(S) 1,2-Dichloroethane-d4 105 70.0-130
Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD)
(LCS) R4210640-1 05/02/25 20:06 • (LCSD) R4210640-2 05/02/25 20:28
Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits
Analyte ug/l ug/l ug/l %%%%%
Benzene 5.00 4.99 5.06 99.8 101 70.0-123 1.39 20
Toluene 5.00 4.39 4.92 87.8 98.4 79.0-120 11.4 20
Ethylbenzene 5.00 4.29 4.38 85.8 87.6 79.0-123 2.08 20
Total Xylenes 15.0 12.8 12.9 85.3 86.0 79.0-123 0.778 20
Methyl tert-butyl ether 5.00 5.63 5.23 113 105 68.0-125 7.37 20
Naphthalene 5.00 3.45 3.55 69.0 71.0 54.0-135 J J 2.86 20
(S) Toluene-d8 95.2 108 80.0-120
(S) 4-Bromofluorobenzene 92.7 93.6 77.0-126
(S) 1,2-Dichloroethane-d4 101 102 70.0-130
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
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QUALITY CONTROL SUMMARYWG2508574
Volatile Organic Compounds (GC/MS) by Method 8260B L1853519-01,06,08
Method Blank (MB)
(MB) R4211516-3 05/07/25 11:10
MB Result MB Qualifier MB MDL MB RDL
Analyte ug/l ug/l ug/l
Benzene U 0.0941 1.00
Toluene U 0.278 1.00
Ethylbenzene U 0.137 1.00
Total Xylenes U 0.174 3.00
Methyl tert-butyl ether U 0.101 1.00
Naphthalene U 1.00 5.00
(S) Toluene-d8 95.9 80.0-120
(S) 4-Bromofluorobenzene 92.6 77.0-126
(S) 1,2-Dichloroethane-d4 118 70.0-130
Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD)
(LCS) R4211516-1 05/07/25 09:23 • (LCSD) R4211516-2 05/07/25 09:45
Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits
Analyte ug/l ug/l ug/l %%%%%
Benzene 5.00 5.46 5.31 109 106 70.0-123 2.79 20
Toluene 5.00 4.73 4.93 94.6 98.6 79.0-120 4.14 20
Ethylbenzene 5.00 4.50 4.46 90.0 89.2 79.0-123 0.893 20
Total Xylenes 15.0 13.4 13.4 89.3 89.3 79.0-123 0.000 20
Methyl tert-butyl ether 5.00 5.73 5.46 115 109 68.0-125 4.83 20
Naphthalene 5.00 4.11 4.04 82.2 80.8 54.0-135 J J 1.72 20
(S) Toluene-d8 93.9 94.4 80.0-120
(S) 4-Bromofluorobenzene 97.9 95.2 77.0-126
(S) 1,2-Dichloroethane-d4 124 124 70.0-130
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
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QUALITY CONTROL SUMMARYWG2506730
Semi-Volatile Organic Compounds (GC) by Method 8015D L1853519-01,02,03,04,05,06,07,08,09,10,11
Method Blank (MB)
(MB) R4212375-1 05/08/25 18:59
MB Result MB Qualifier MB MDL MB RDL
Analyte ug/l ug/l ug/l
TPH (GC/FID) High Fraction U 60.5 100
(S) o-Terphenyl 93.0 52.0-156
Laboratory Control Sample (LCS)
(LCS) R4212375-2 05/08/25 19:24
Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier
Analyte ug/l ug/l %%
TPH (GC/FID) High Fraction 1500 1830 122 50.0-150
(S) o-Terphenyl 104 52.0-156
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
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QUALITY CONTROL SUMMARYWG2507501
Semi-Volatile Organic Compounds (GC) by Method 8015D L1853519-12
Method Blank (MB)
(MB) R4210320-1 05/06/25 01:58
MB Result MB Qualifier MB MDL MB RDL
Analyte ug/l ug/l ug/l
TPH (GC/FID) High Fraction U 60.5 100
(S) o-Terphenyl 85.5 52.0-156
Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD)
(LCS) R4210320-2 05/06/25 02:18 • (LCSD) R4210320-3 05/06/25 02:38
Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits
Analyte ug/l ug/l ug/l %%%%%
TPH (GC/FID) High Fraction 1500 1390 1470 92.7 98.0 50.0-150 5.59 20
(S) o-Terphenyl 93.5 94.0 52.0-156
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
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GLOSSARY OF TERMS
Guide to Reading and Understanding Your Laboratory Report
The information below is designed to better explain the various terms used in your report of analytical results from the Laboratory. This is not
intended as a comprehensive explanation, and if you have additional questions please contact your project representative.
Results Disclaimer - Information that may be provided by the customer, and contained within this report, include Permit Limits, Project Name,
Sample ID, Sample Matrix, Sample Preservation, Field Blanks, Field Spikes, Field Duplicates, On-Site Data, Sampling Collection Dates/Times, and
Sampling Location. Results relate to the accuracy of this information provided, and as the samples are received.
Abbreviations and Definitions
MDL Method Detection Limit.
RDL Reported Detection Limit.
Rec.Recovery.
RPD Relative Percent Difference.
SDG Sample Delivery Group.
(S)
Surrogate (Surrogate Standard) - Analytes added to every blank, sample, Laboratory Control Sample/Duplicate and
Matrix Spike/Duplicate; used to evaluate analytical efficiency by measuring recovery. Surrogates are not expected to be
detected in all environmental media.
U Not detected at the Reporting Limit (or MDL where applicable).
Analyte The name of the particular compound or analysis performed. Some Analyses and Methods will have multiple analytes
reported.
Dilution
If the sample matrix contains an interfering material, the sample preparation volume or weight values differ from the
standard, or if concentrations of analytes in the sample are higher than the highest limit of concentration that the
laboratory can accurately report, the sample may be diluted for analysis. If a value different than 1 is used in this field, the
result reported has already been corrected for this factor.
Limits
These are the target % recovery ranges or % difference value that the laboratory has historically determined as normal
for the method and analyte being reported. Successful QC Sample analysis will target all analytes recovered or
duplicated within these ranges.
Qualifier
This column provides a letter and/or number designation that corresponds to additional information concerning the result
reported. If a Qualifier is present, a definition per Qualifier is provided within the Glossary and Definitions page and
potentially a discussion of possible implications of the Qualifier in the Case Narrative if applicable.
Result
The actual analytical final result (corrected for any sample specific characteristics) reported for your sample. If there was
no measurable result returned for a specific analyte, the result in this column may state “ND” (Not Detected) or “BDL”
(Below Detectable Levels). The information in the results column should always be accompanied by either an MDL
(Method Detection Limit) or RDL (Reporting Detection Limit) that defines the lowest value that the laboratory could detect
or report for this analyte.
Uncertainty
(Radiochemistry)Confidence level of 2 sigma.
Case Narrative (Cn)
A brief discussion about the included sample results, including a discussion of any non-conformances to protocol
observed either at sample receipt by the laboratory from the field or during the analytical process. If present, there will
be a section in the Case Narrative to discuss the meaning of any data qualifiers used in the report.
Quality Control
Summary (Qc)
This section of the report includes the results of the laboratory quality control analyses required by procedure or
analytical methods to assist in evaluating the validity of the results reported for your samples. These analyses are not
being performed on your samples typically, but on laboratory generated material.
Sample Chain of
Custody (Sc)
This is the document created in the field when your samples were initially collected. This is used to verify the time and
date of collection, the person collecting the samples, and the analyses that the laboratory is requested to perform. This
chain of custody also documents all persons (excluding commercial shippers) that have had control or possession of the
samples from the time of collection until delivery to the laboratory for analysis.
Sample Results (Sr)
This section of your report will provide the results of all testing performed on your samples. These results are provided
by sample ID and are separated by the analyses performed on each sample. The header line of each analysis section for
each sample will provide the name and method number for the analysis reported.
Sample Summary (Ss)This section of the Analytical Report defines the specific analyses performed for each sample ID, including the dates and
times of preparation and/or analysis.
Qualifier Description
C3 The reported concentration is an estimate. The continuing calibration standard associated with this data responded low.
Method sensitivity check is acceptable.
J The identification of the analyte is acceptable; the reported value is an estimate.
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
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Georgia NELAP North Carolina ³41
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Indiana C-TN-01 Oregon TN200002
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Kansas E-10277 Rhode Island LAO00356
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ACCREDITATIONS & LOCATIONS

¹ Drinking Water ² Underground Storage Tanks ³ Aquatic Toxicity ⁴ Chemical/Microbiological ⁵ Mold ⁶ Wastewater n/a Accreditation not applicable
* Not all certifications held by the laboratory are applicable to the results reported in the attached report.
* Accreditation is only applicable to the test methods specified on each scope of accreditation held by Pace Analytical.
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
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