DERR-2024-011069

Page 1
ATLAS

September 13, 2024

Mr. Mark Crim
Utah Department of Environmental Quality
Division of Environmental Response and Remediation
195 North 1950 West
Salt Lake City, Utah 84114

SUBJECT: Groundwater Monitoring Report
Red Duck II
809 28th Street
Ogden, Utah
Facility ID #1200062
UST Release Site MUZ
Work Assignments MUZ-03
UDEQ Technical Services Contract #216364

Dear Mr. Crim:

Please find attached a copy of the August 2024 Groundwater Monitoring Report for the above
referenced site.

INTRODUCTION

The work conducted on August 14, 2024, was performed on behalf of the Utah Department
Environmental Quality, Division of Environmental Response and Remediation (DERR), under
Work Assignment MUZ-03.

FIELD PARAMETER WELL PURGING PROCEDURES AND CHEMICAL ANALYSIS

The approved work plan included collecting water samples from monitoring wells MW -A through
MW -G. 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.

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

Page 2
ATLAS
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 northwest at a gradient of 0.030 ft/ft between MW -D and MW -F. The groundwater
gradient map is presented as Figure 2.

Review of the groundwater laboratory data indicated the presence of benzene above the Initial
Screening Level (ISL) of 0.005 mg/L in MW -B (0.0515 mg/L), MW -C (0.177 mg/L), MW -F (0.113
mg/L), and MW -G (0.0957 mg/L). No other MBTEXN constituents were measured above their
respective ISLs. TPH-GRO was measured at or above the ISL of 1.0 mg/L in MW -B (1.560
mg/L), MW -C (7.970 mg/L), MW -D (1.480 mg/L), MW -F (2.140 mg/L), and MW-G (1.000 mg/L).
TPH-DRO was measured at or above the ISL of 1.0 mg/L in MW -B (1.110 mg/L), MW -C (3.840
mg/L), MW -F (2.470 mg/L), and MW -G (2.160 mg/L). 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 groundwater data indicates the presence of benzene, TPH-GRO, and TPH-DRO
above their respective ISLs.

Based upon the August 2024 laboratory results and historical groundwater monitoring data
collected at the site, Atlas recommends the quarterly groundwater monitoring program continue
at the site. The August 2024 sampling round was the first groundwater monitoring event under
Work Assignment MUZ-03. The next groundwater monitoring event is scheduled for November
2024.

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

271EM00890PROJECT NUMBER:DATE:04-24-24
1
FIGURE
DRAWN BY:JCAPPROVED BY:BA
358 South 700 East, B518
Salt Lake City, Utah 84102
801-935-4917
MONITORING WELL LOCATION
S
PROPERTY BOUNDARY
ABANDONED MONITORING WELL LOCATION
271EM00890PROJECT NUMBER:DATE:09-12-24
2
FIGURE
DRAWN BY:JCAPPROVED BY:BA
358 South 700 East, B518
Salt Lake City, Utah 84102
801-935-4917
MONITORING WELL LOCATION
S
PROPERTY BOUNDARY
ESTIMATED GROUNDWATER CONTOUR LINE
MEASURED IN FEET
GROUNDWATER ELEVATION IN FEET
ABANDONED MONITORING WELL LOCATION
271EM00890PROJECT NUMBER:DATE:09-12-24
3
FIGURE
DRAWN BY:JCAPPROVED BY:BA
358 South 700 East, B518
Salt Lake City, Utah 84102
801-935-4917
MONITORING WELL LOCATION
S
PROPERTY BOUNDARY
ESTIMATED BENZENE ISOCONCENTRATION LINE
MEASURED IN mg/L
BENZENE CONCENTRATION IN mg/L
ABANDONED MONITORING WELL LOCATION
271EM00890PROJECT NUMBER:DATE:09-12-24
4
FIGURE
DRAWN BY:JCAPPROVED BY:BA
358 South 700 East, B518
Salt Lake City, Utah 84102
801-935-4917
MONITORING WELL LOCATION
S
PROPERTY BOUNDARY
ESTIMATED TPH-GRO ISOCONCENTRATION LINE
MEASURED IN mg/L
TPH-GRO CONCENTRATION IN mg/L
ABANDONED MONITORING WELL LOCATION
271EM00890PROJECT NUMBER:DATE:09-12-24
5
FIGURE
DRAWN BY:JCAPPROVED BY:BA
358 South 700 East, B518
Salt Lake City, Utah 84102
801-935-4917
MONITORING WELL LOCATION
S
ABANDONED MONITORING WELL LOCATION
MEASURED IN mg/L
ESTIMATED TPH-DRO ISOCONCENTRATION LINE
TPH-DRO CONCENTRATION IN mg/L
PROPERTY BOUNDARY

TABLES

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-A 04/16/24 <0.005 <0.012 <0.012 <0.012 <0.005 <0.012 <0.125 <1.0 5.32 0.00 94.04
99.36 08/07/24 0.0015 <0.00100 0.000306 J <0.00100 0.000816 J <0.00500 <0.500 0.502 11.75 0.00 87.61

MW-B 04/16/24 0.128 <0.012 <0.012 <0.012 <0.005 0.018 0.510 <1.0 4.74 0.00 94.74
99.48 08/07/24 0.0515 0.00116 0.00324 0.00226 J 0.000469 J 0.0161 1.560 1.110 11.80 0.00 87.68

MW-C 04/16/24 0.062 <0.012 0.096 0.016 <0.005 0.155 4.09 3.0 6.32 0.00 93.17
99.49 08/07/24 0.177 0.00671 0.106 0.0266 0.000277 J 0.169 7.970 3.840 12.15 0.00 87.34

MW-D 04/16/24 <0.005 <0.012 <0.012 <0.012 <0.005 <0.012 <0.125 <1.0 1.23 0.00 98.77
100.00 08/07/24 0.00240 0.000294 J 0.108 0.00752 <0.00100 0.0270 1.480 0.887 11.78 0.00 88.22

MW-E 04/16/24 0.005 <0.012 0.023 <0.012 <0.005 0.127 0.918 2.3 6.49 0.00 93.37
99.86 08/07/24 0.00160 0.000322 J 0.00311 0.000199 J <0.00100 0.0195 0.519 0.535 12.35 0.00 87.51

MW-F 04/16/24 0.107 <0.012 0.013 <0.012 <0.005 0.084 1.67 2.5 7.81 0.00 90.36
98.17 08/07/24 0.113 0.00316 0.00809 0.00250 J 0.00178 0.0869 2.140 2.470 13.82 0.00 84.35
MW-G 04/16/24 0.190 <0.012 0.065 <0.012 <0.005 0.304 2.70 4.4 6.58 0.00 92.43
99.01 08/07/24 0.0957 0.00244 0.00369 0.00284 J 0.00129 0.0585 1.000 2.160 12.89 0.00 86.12

Notes:
TPH -GRO = Total Petroleum Hydrocarbons as Gasoline mg/L = Milligrams per Liter
TPH -DRO = Total Petroleum Hydrocarbons as Diesel DTW = Depth to Water
TOC = Top of Casing, Monitoring Well Surveyed Elevation NA = Not Analyzed
< = Not detected above the laboratory reporting limit WTE = Water Table Elevation
RBCA = Risk Based Corrective Action FPT = Free Product Thickness
Bold numbers indicate an exceedence of the Initial Screening Level
FACILITY I.D. 12000062, LUST I.D. MUZ
TABLE 1
GROUNDWATER ANALYTICAL AND ELEVATION DATA SUMMARY
RED DUCK II
809 28TH STREET
OGDEN, UTAH

APPENDIX A
LABORATORY ANALYTICAL REPORT

ANALYTICAL REPORT
August 24, 2024
One Atlas
Sample Delivery Group:L1765933
Samples Received:08/09/2024
Project Number:
Description:Red Duck II
Report To:Jim Coletta
1775 South 4130 West, Ste A
Salt Lake City, UT 84104
Entire Report Reviewed By:
August 24, 2024
[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:
One Atlas L1765933 08/24/24 17:28 1 of 22
August 26, 2024
Daphne Richards
Project Manager
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
One Atlas L1765933 08/26/24 08:39 1 of 22
TABLE OF CONTENTS
Cp: Cover Page 1
Tc: Table of Contents 2
Ss: Sample Summary 3
Cn: Case Narrative 5
Sr: Sample Results 6
MW-A L1765933-01 6
MW-B L1765933-02 7
MW-C L1765933-03 8
MW-D L1765933-04 9
MW-E L1765933-05 10
MW-F L1765933-06 11
MW-G L1765933-07 12
FIELD BLANK L1765933-08 13
TRIP BLANK L1765933-09 14
Qc: Quality Control Summary 15
Volatile Organic Compounds (GC) by Method 8015D/GRO 15
Volatile Organic Compounds (GC/MS) by Method 8260B 16
Semi-Volatile Organic Compounds (GC) by Method 3511/8015 19
Gl: Glossary of Terms 20
Al: Accreditations & Locations 21
Sc: Sample Chain of Custody 22
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
One Atlas L1765933 08/24/24 17:28 2 of 22
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
One Atlas L1765933 08/26/24 08:39 2 of 22
SAMPLE SUMMARY
Collected by Collected date/time Received date/time
MW-A L1765933-01 GW Olaf Questereit 08/07/24 14:45 08/09/24 08:00
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (GC) by Method 8015D/GRO WG2342722 5 08/14/24 17:25 08/14/24 17:25 DYW Mt. Juliet, TN
Volatile Organic Compounds (GC/MS) by Method 8260B WG2341734 1 08/13/24 16:39 08/13/24 16:39 DWR Mt. Juliet, TN
Semi-Volatile Organic Compounds (GC) by Method 3511/8015 WG2347105 1 08/21/24 16:16 08/22/24 17:05 TJD Mt. Juliet, TN
Collected by Collected date/time Received date/time
MW-B L1765933-02 GW Olaf Questereit 08/07/24 14:30 08/09/24 08:00
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (GC) by Method 8015D/GRO WG2342722 5 08/14/24 17:47 08/14/24 17:47 DYW Mt. Juliet, TN
Volatile Organic Compounds (GC/MS) by Method 8260B WG2341734 1 08/13/24 16:56 08/13/24 16:56 DWR Mt. Juliet, TN
Semi-Volatile Organic Compounds (GC) by Method 3511/8015 WG2347105 1 08/21/24 16:16 08/22/24 17:26 TJD Mt. Juliet, TN
Collected by Collected date/time Received date/time
MW-C L1765933-03 GW Olaf Questereit 08/07/24 14:15 08/09/24 08:00
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (GC) by Method 8015D/GRO WG2342722 5 08/14/24 18:09 08/14/24 18:09 DYW Mt. Juliet, TN
Volatile Organic Compounds (GC/MS) by Method 8260B WG2341734 1 08/13/24 17:15 08/13/24 17:15 DWR Mt. Juliet, TN
Volatile Organic Compounds (GC/MS) by Method 8260B WG2342576 5 08/14/24 22:28 08/14/24 22:28 JCP Mt. Juliet, TN
Semi-Volatile Organic Compounds (GC) by Method 3511/8015 WG2347105 1 08/21/24 16:16 08/22/24 17:46 TJD Mt. Juliet, TN
Collected by Collected date/time Received date/time
MW-D L1765933-04 GW Olaf Questereit 08/07/24 14:00 08/09/24 08:00
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (GC) by Method 8015D/GRO WG2342722 5 08/14/24 18:31 08/14/24 18:31 DYW Mt. Juliet, TN
Volatile Organic Compounds (GC/MS) by Method 8260B WG2341734 1 08/13/24 17:34 08/13/24 17:34 DWR Mt. Juliet, TN
Semi-Volatile Organic Compounds (GC) by Method 3511/8015 WG2347105 1 08/21/24 16:16 08/22/24 18:07 TJD Mt. Juliet, TN
Collected by Collected date/time Received date/time
MW-E L1765933-05 GW Olaf Questereit 08/07/24 15:00 08/09/24 08:00
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (GC) by Method 8015D/GRO WG2342722 5 08/14/24 18:53 08/14/24 18:53 DYW Mt. Juliet, TN
Volatile Organic Compounds (GC/MS) by Method 8260B WG2341734 1 08/13/24 17:53 08/13/24 17:53 DWR Mt. Juliet, TN
Semi-Volatile Organic Compounds (GC) by Method 3511/8015 WG2347105 1 08/21/24 16:16 08/22/24 18:27 TJD Mt. Juliet, TN
Collected by Collected date/time Received date/time
MW-F L1765933-06 GW Olaf Questereit 08/07/24 15:15 08/09/24 08:00
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (GC) by Method 8015D/GRO WG2342722 5 08/14/24 19:15 08/14/24 19:15 DYW Mt. Juliet, TN
Volatile Organic Compounds (GC/MS) by Method 8260B WG2342268 1 08/14/24 00:58 08/14/24 00:58 JCP Mt. Juliet, TN
Semi-Volatile Organic Compounds (GC) by Method 3511/8015 WG2347105 1 08/21/24 16:16 08/22/24 18:47 TJD Mt. Juliet, TN
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
One Atlas L1765933 08/24/24 17:28 3 of 22
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
One Atlas L1765933 08/26/24 08:39 3 of 22
SAMPLE SUMMARY
Collected by Collected date/time Received date/time
MW-G L1765933-07 GW Olaf Questereit 08/07/24 15:30 08/09/24 08:00
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (GC) by Method 8015D/GRO WG2342722 5 08/14/24 19:37 08/14/24 19:37 DYW Mt. Juliet, TN
Volatile Organic Compounds (GC/MS) by Method 8260B WG2342268 1 08/14/24 01:21 08/14/24 01:21 JCP Mt. Juliet, TN
Semi-Volatile Organic Compounds (GC) by Method 3511/8015 WG2347105 1 08/21/24 16:16 08/22/24 19:08 TJD Mt. Juliet, TN
Collected by Collected date/time Received date/time
FIELD BLANK L1765933-08 GW Olaf Questereit 08/07/24 15:05 08/09/24 08:00
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (GC) by Method 8015D/GRO WG2342722 1 08/14/24 14:01 08/14/24 14:01 DYW Mt. Juliet, TN
Volatile Organic Compounds (GC/MS) by Method 8260B WG2342268 1 08/13/24 23:29 08/13/24 23:29 JCP Mt. Juliet, TN
Semi-Volatile Organic Compounds (GC) by Method 3511/8015 WG2347105 1 08/21/24 16:16 08/22/24 19:28 TJD Mt. Juliet, TN
Collected by Collected date/time Received date/time
TRIP BLANK L1765933-09 GW Olaf Questereit 08/07/24 00:00 08/09/24 08:00
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (GC/MS) by Method 8260B WG2342268 1 08/13/24 23:06 08/13/24 23:06 JCP Mt. Juliet, TN
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
One Atlas L1765933 08/24/24 17:28 4 of 22
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
One Atlas L1765933 08/26/24 08:39 4 of 22
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
Sample Delivery Group (SDG) Narrative
pH outside of method requirement.
Lab Sample ID Project Sample ID Method
L1765933-03 MW-C 3511/8015
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
One Atlas L1765933 08/24/24 17:28 5 of 22
Daphne Richards
Project Manager
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
One Atlas L1765933 08/26/24 08:39 5 of 22
SAMPLE RESULTS - 01
L1765933
MW-A
Collected date/time: 08/07/24 14:45
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 U 157 500 5 08/14/2024 17:25 WG2342722
(S)
a,a,a-Trifluorotoluene(FID)99.3 78.0-120 08/14/2024 17:25 WG2342722
Sample Narrative:
L1765933-01 WG2342722: Lowest possible dilution due to sample foaming.
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 1.15 0.0941 1.00 1 08/13/2024 16:39 WG2341734
Toluene U 0.278 1.00 1 08/13/2024 16:39 WG2341734
Ethylbenzene 0.306 J 0.137 1.00 1 08/13/2024 16:39 WG2341734
Total Xylenes U 0.174 3.00 1 08/13/2024 16:39 WG2341734
Methyl tert-butyl ether 0.816 J 0.101 1.00 1 08/13/2024 16:39 WG2341734
Naphthalene U 1.00 5.00 1 08/13/2024 16:39 WG2341734
(S) Toluene-d8 98.8 80.0-120 08/13/2024 16:39 WG2341734
(S) 4-Bromofluorobenzene 104 77.0-126 08/13/2024 16:39 WG2341734
(S) 1,2-Dichloroethane-d4 101 70.0-130 08/13/2024 16:39 WG2341734
Semi-Volatile Organic Compounds (GC) by Method 3511/8015
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
TPH (GC/FID) High Fraction 502 24.7 100 1 08/22/2024 17:05 WG2347105
(S) o-Terphenyl 105 52.0-156 08/22/2024 17:05 WG2347105
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
One Atlas L1765933 08/24/24 17:28 6 of 22
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
One Atlas L1765933 08/26/24 08:39 6 of 22
SAMPLE RESULTS - 02
L1765933
MW-B
Collected date/time: 08/07/24 14:30
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 1560 157 500 5 08/14/2024 17:47 WG2342722
(S)
a,a,a-Trifluorotoluene(FID)95.2 78.0-120 08/14/2024 17:47 WG2342722
Sample Narrative:
L1765933-02 WG2342722: Lowest possible dilution due to sample foaming.
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 51.5 0.0941 1.00 1 08/13/2024 16:56 WG2341734
Toluene 1.16 0.278 1.00 1 08/13/2024 16:56 WG2341734
Ethylbenzene 3.24 0.137 1.00 1 08/13/2024 16:56 WG2341734
Total Xylenes 2.26 J 0.174 3.00 1 08/13/2024 16:56 WG2341734
Methyl tert-butyl ether 0.469 J 0.101 1.00 1 08/13/2024 16:56 WG2341734
Naphthalene 16.1 1.00 5.00 1 08/13/2024 16:56 WG2341734
(S) Toluene-d8 98.1 80.0-120 08/13/2024 16:56 WG2341734
(S) 4-Bromofluorobenzene 89.4 77.0-126 08/13/2024 16:56 WG2341734
(S) 1,2-Dichloroethane-d4 100 70.0-130 08/13/2024 16:56 WG2341734
Semi-Volatile Organic Compounds (GC) by Method 3511/8015
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
TPH (GC/FID) High Fraction 1110 24.7 100 1 08/22/2024 17:26 WG2347105
(S) o-Terphenyl 116 52.0-156 08/22/2024 17:26 WG2347105
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
One Atlas L1765933 08/24/24 17:28 7 of 22
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
One Atlas L1765933 08/26/24 08:39 7 of 22
SAMPLE RESULTS - 03
L1765933
MW-C
Collected date/time: 08/07/24 14:15
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 7970 157 500 5 08/14/2024 18:09 WG2342722
(S)
a,a,a-Trifluorotoluene(FID)93.0 78.0-120 08/14/2024 18:09 WG2342722
Sample Narrative:
L1765933-03 WG2342722: Lowest possible dilution due to sample foaming.
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 177 0.0941 1.00 1 08/13/2024 17:15 WG2341734
Toluene 6.71 0.278 1.00 1 08/13/2024 17:15 WG2341734
Ethylbenzene 106 0.137 1.00 1 08/13/2024 17:15 WG2341734
Total Xylenes 26.6 0.174 3.00 1 08/13/2024 17:15 WG2341734
Methyl tert-butyl ether 0.277 J 0.101 1.00 1 08/13/2024 17:15 WG2341734
Naphthalene 169 5.00 25.0 5 08/14/2024 22:28 WG2342576
(S) Toluene-d8 105 80.0-120 08/13/2024 17:15 WG2341734
(S) Toluene-d8 91.9 80.0-120 08/14/2024 22:28 WG2342576
(S) 4-Bromofluorobenzene 92.9 77.0-126 08/13/2024 17:15 WG2341734
(S) 4-Bromofluorobenzene 100 77.0-126 08/14/2024 22:28 WG2342576
(S) 1,2-Dichloroethane-d4 101 70.0-130 08/13/2024 17:15 WG2341734
(S) 1,2-Dichloroethane-d4 100 70.0-130 08/14/2024 22:28 WG2342576
Semi-Volatile Organic Compounds (GC) by Method 3511/8015
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
TPH (GC/FID) High Fraction 3840 24.7 100 1 08/22/2024 17:46 WG2347105
(S) o-Terphenyl 127 52.0-156 08/22/2024 17:46 WG2347105
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
One Atlas L1765933 08/24/24 17:28 8 of 22
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
One Atlas L1765933 08/26/24 08:39 8 of 22
SAMPLE RESULTS - 04
L1765933
MW-D
Collected date/time: 08/07/24 14:00
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 1480 157 500 5 08/14/2024 18:31 WG2342722
(S)
a,a,a-Trifluorotoluene(FID)96.7 78.0-120 08/14/2024 18:31 WG2342722
Sample Narrative:
L1765933-04 WG2342722: Lowest possible dilution due to sample foaming.
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 2.40 0.0941 1.00 1 08/13/2024 17:34 WG2341734
Toluene 0.294 J 0.278 1.00 1 08/13/2024 17:34 WG2341734
Ethylbenzene 108 0.137 1.00 1 08/13/2024 17:34 WG2341734
Total Xylenes 7.52 0.174 3.00 1 08/13/2024 17:34 WG2341734
Methyl tert-butyl ether U 0.101 1.00 1 08/13/2024 17:34 WG2341734
Naphthalene 27.0 1.00 5.00 1 08/13/2024 17:34 WG2341734
(S) Toluene-d8 91.4 80.0-120 08/13/2024 17:34 WG2341734
(S) 4-Bromofluorobenzene 93.8 77.0-126 08/13/2024 17:34 WG2341734
(S) 1,2-Dichloroethane-d4 94.8 70.0-130 08/13/2024 17:34 WG2341734
Semi-Volatile Organic Compounds (GC) by Method 3511/8015
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
TPH (GC/FID) High Fraction 887 24.7 100 1 08/22/2024 18:07 WG2347105
(S) o-Terphenyl 114 52.0-156 08/22/2024 18:07 WG2347105
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
One Atlas L1765933 08/24/24 17:28 9 of 22
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
One Atlas L1765933 08/26/24 08:39 9 of 22
SAMPLE RESULTS - 05
L1765933
MW-E
Collected date/time: 08/07/24 15:00
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 519 157 500 5 08/14/2024 18:53 WG2342722
(S)
a,a,a-Trifluorotoluene(FID)97.8 78.0-120 08/14/2024 18:53 WG2342722
Sample Narrative:
L1765933-05 WG2342722: Lowest possible dilution due to sample foaming.
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 1.60 0.0941 1.00 1 08/13/2024 17:53 WG2341734
Toluene 0.322 J 0.278 1.00 1 08/13/2024 17:53 WG2341734
Ethylbenzene 3.11 0.137 1.00 1 08/13/2024 17:53 WG2341734
Total Xylenes 0.199 J 0.174 3.00 1 08/13/2024 17:53 WG2341734
Methyl tert-butyl ether U 0.101 1.00 1 08/13/2024 17:53 WG2341734
Naphthalene 19.5 1.00 5.00 1 08/13/2024 17:53 WG2341734
(S) Toluene-d8 94.1 80.0-120 08/13/2024 17:53 WG2341734
(S) 4-Bromofluorobenzene 102 77.0-126 08/13/2024 17:53 WG2341734
(S) 1,2-Dichloroethane-d4 103 70.0-130 08/13/2024 17:53 WG2341734
Semi-Volatile Organic Compounds (GC) by Method 3511/8015
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
TPH (GC/FID) High Fraction 535 24.7 100 1 08/22/2024 18:27 WG2347105
(S) o-Terphenyl 77.4 52.0-156 08/22/2024 18:27 WG2347105
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
One Atlas L1765933 08/24/24 17:28 10 of 22
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
One Atlas L1765933 08/26/24 08:39 10 of 22
SAMPLE RESULTS - 06
L1765933
MW-F
Collected date/time: 08/07/24 15:15
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 2140 157 500 5 08/14/2024 19:15 WG2342722
(S)
a,a,a-Trifluorotoluene(FID)96.7 78.0-120 08/14/2024 19:15 WG2342722
Sample Narrative:
L1765933-06 WG2342722: Lowest possible dilution due to sample foaming.
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 113 0.0941 1.00 1 08/14/2024 00:58 WG2342268
Toluene 3.16 0.278 1.00 1 08/14/2024 00:58 WG2342268
Ethylbenzene 8.09 0.137 1.00 1 08/14/2024 00:58 WG2342268
Total Xylenes 2.50 J 0.174 3.00 1 08/14/2024 00:58 WG2342268
Methyl tert-butyl ether 1.78 0.101 1.00 1 08/14/2024 00:58 WG2342268
Naphthalene 86.9 1.00 5.00 1 08/14/2024 00:58 WG2342268
(S) Toluene-d8 108 80.0-120 08/14/2024 00:58 WG2342268
(S) 4-Bromofluorobenzene 83.5 77.0-126 08/14/2024 00:58 WG2342268
(S) 1,2-Dichloroethane-d4 107 70.0-130 08/14/2024 00:58 WG2342268
Semi-Volatile Organic Compounds (GC) by Method 3511/8015
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
TPH (GC/FID) High Fraction 2470 24.7 100 1 08/22/2024 18:47 WG2347105
(S) o-Terphenyl 122 52.0-156 08/22/2024 18:47 WG2347105
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
One Atlas L1765933 08/24/24 17:28 11 of 22
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
One Atlas L1765933 08/26/24 08:39 11 of 22
SAMPLE RESULTS - 07
L1765933
MW-G
Collected date/time: 08/07/24 15:30
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 1000 157 500 5 08/14/2024 19:37 WG2342722
(S)
a,a,a-Trifluorotoluene(FID)97.9 78.0-120 08/14/2024 19:37 WG2342722
Sample Narrative:
L1765933-07 WG2342722: Lowest possible dilution due to sample foaming.
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 95.7 0.0941 1.00 1 08/14/2024 01:21 WG2342268
Toluene 2.44 0.278 1.00 1 08/14/2024 01:21 WG2342268
Ethylbenzene 3.69 0.137 1.00 1 08/14/2024 01:21 WG2342268
Total Xylenes 2.84 J 0.174 3.00 1 08/14/2024 01:21 WG2342268
Methyl tert-butyl ether 1.29 0.101 1.00 1 08/14/2024 01:21 WG2342268
Naphthalene 58.5 1.00 5.00 1 08/14/2024 01:21 WG2342268
(S) Toluene-d8 108 80.0-120 08/14/2024 01:21 WG2342268
(S) 4-Bromofluorobenzene 88.5 77.0-126 08/14/2024 01:21 WG2342268
(S) 1,2-Dichloroethane-d4 103 70.0-130 08/14/2024 01:21 WG2342268
Semi-Volatile Organic Compounds (GC) by Method 3511/8015
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
TPH (GC/FID) High Fraction 2160 24.7 100 1 08/22/2024 19:08 WG2347105
(S) o-Terphenyl 125 52.0-156 08/22/2024 19:08 WG2347105
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
One Atlas L1765933 08/24/24 17:28 12 of 22
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
One Atlas L1765933 08/26/24 08:39 12 of 22
SAMPLE RESULTS - 08
L1765933
FIELD BLANK
Collected date/time: 08/07/24 15:05
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 08/14/2024 14:01 WG2342722
(S)
a,a,a-Trifluorotoluene(FID)99.3 78.0-120 08/14/2024 14:01 WG2342722
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 08/13/2024 23:29 WG2342268
Toluene U 0.278 1.00 1 08/13/2024 23:29 WG2342268
Ethylbenzene U 0.137 1.00 1 08/13/2024 23:29 WG2342268
Total Xylenes U 0.174 3.00 1 08/13/2024 23:29 WG2342268
Methyl tert-butyl ether U 0.101 1.00 1 08/13/2024 23:29 WG2342268
Naphthalene U 1.00 5.00 1 08/13/2024 23:29 WG2342268
(S) Toluene-d8 115 80.0-120 08/13/2024 23:29 WG2342268
(S) 4-Bromofluorobenzene 88.5 77.0-126 08/13/2024 23:29 WG2342268
(S) 1,2-Dichloroethane-d4 103 70.0-130 08/13/2024 23:29 WG2342268
Semi-Volatile Organic Compounds (GC) by Method 3511/8015
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
TPH (GC/FID) High Fraction U 24.7 100 1 08/22/2024 19:28 WG2347105
(S) o-Terphenyl 62.6 52.0-156 08/22/2024 19:28 WG2347105
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
One Atlas L1765933 08/24/24 17:28 13 of 22
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
One Atlas L1765933 08/26/24 08:39 13 of 22
SAMPLE RESULTS - 09
L1765933
TRIP BLANK
Collected date/time: 08/07/24 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 08/13/2024 23:06 WG2342268
Toluene U 0.278 1.00 1 08/13/2024 23:06 WG2342268
Ethylbenzene U 0.137 1.00 1 08/13/2024 23:06 WG2342268
Total Xylenes U 0.174 3.00 1 08/13/2024 23:06 WG2342268
Methyl tert-butyl ether U 0.101 1.00 1 08/13/2024 23:06 WG2342268
Naphthalene U 1.00 5.00 1 08/13/2024 23:06 WG2342268
(S) Toluene-d8 116 80.0-120 08/13/2024 23:06 WG2342268
(S) 4-Bromofluorobenzene 88.7 77.0-126 08/13/2024 23:06 WG2342268
(S) 1,2-Dichloroethane-d4 101 70.0-130 08/13/2024 23:06 WG2342268
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
One Atlas L1765933 08/24/24 17:28 14 of 22
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
One Atlas L1765933 08/26/24 08:39 14 of 22
QUALITY CONTROL SUMMARYWG2342722
Volatile Organic Compounds (GC) by Method 8015D/GRO L1765933-01,02,03,04,05,06,07,08
Method Blank (MB)
(MB) R4107241-2 08/14/24 12:24
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)99.9 78.0-120
Laboratory Control Sample (LCS)
(LCS) R4107241-1 08/14/24 11:41
Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier
Analyte ug/l ug/l %%
TPH (GC/FID) Low Fraction 5000 4600 92.0 72.0-127
(S)
a,a,a-Trifluorotoluene(FID) 102 78.0-120
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
One Atlas L1765933 08/24/24 17:28 15 of 22
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
One Atlas L1765933 08/26/24 08:39 15 of 22
QUALITY CONTROL SUMMARYWG2341734
Volatile Organic Compounds (GC/MS) by Method 8260B L1765933-01,02,03,04,05
Method Blank (MB)
(MB) R4106042-2 08/13/24 10:17
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 98.1 80.0-120
(S) 4-Bromofluorobenzene 106 77.0-126
(S) 1,2-Dichloroethane-d4 99.7 70.0-130
Laboratory Control Sample (LCS)
(LCS) R4106042-1 08/13/24 09:39
Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier
Analyte ug/l ug/l %%
Benzene 5.00 4.68 93.6 70.0-123
Toluene 5.00 4.48 89.6 79.0-120
Ethylbenzene 5.00 4.49 89.8 79.0-123
Total Xylenes 15.0 13.0 86.7 79.0-123
Methyl tert-butyl ether 5.00 3.95 79.0 68.0-125
Naphthalene 5.00 4.24 84.8 54.0-135 J
(S) Toluene-d8 97.1 80.0-120
(S) 4-Bromofluorobenzene 101 77.0-126
(S) 1,2-Dichloroethane-d4 99.7 70.0-130
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
One Atlas L1765933 08/24/24 17:28 16 of 22
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
One Atlas L1765933 08/26/24 08:39 16 of 22
QUALITY CONTROL SUMMARYWG2342268
Volatile Organic Compounds (GC/MS) by Method 8260B L1765933-06,07,08,09
Method Blank (MB)
(MB) R4106886-2 08/13/24 20:22
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 116 80.0-120
(S) 4-Bromofluorobenzene 87.4 77.0-126
(S) 1,2-Dichloroethane-d4 103 70.0-130
Laboratory Control Sample (LCS)
(LCS) R4106886-1 08/13/24 19:14
Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier
Analyte ug/l ug/l %%
Benzene 5.00 5.33 107 70.0-123
Toluene 5.00 5.67 113 79.0-120
Ethylbenzene 5.00 5.17 103 79.0-123
Total Xylenes 15.0 15.2 101 79.0-123
Methyl tert-butyl ether 5.00 5.41 108 68.0-125
Naphthalene 5.00 5.53 111 54.0-135
(S) Toluene-d8 114 80.0-120
(S) 4-Bromofluorobenzene 87.8 77.0-126
(S) 1,2-Dichloroethane-d4 101 70.0-130
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
One Atlas L1765933 08/24/24 17:28 17 of 22
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
One Atlas L1765933 08/26/24 08:39 17 of 22
QUALITY CONTROL SUMMARYWG2342576
Volatile Organic Compounds (GC/MS) by Method 8260B L1765933-03
Method Blank (MB)
(MB) R4107180-3 08/14/24 15:38
MB Result MB Qualifier MB MDL MB RDL
Analyte ug/l ug/l ug/l
Naphthalene U 1.00 5.00
(S) Toluene-d8 99.4 80.0-120
(S) 4-Bromofluorobenzene 101 77.0-126
(S) 1,2-Dichloroethane-d4 97.1 70.0-130
Laboratory Control Sample (LCS)
(LCS) R4107180-1 08/14/24 14:41
Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier
Analyte ug/l ug/l %%
Naphthalene 5.00 4.40 88.0 54.0-135 J
(S) Toluene-d8 97.8 80.0-120
(S) 4-Bromofluorobenzene 97.4 77.0-126
(S) 1,2-Dichloroethane-d4 104 70.0-130
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
One Atlas L1765933 08/24/24 17:28 18 of 22
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
One Atlas L1765933 08/26/24 08:39 18 of 22
QUALITY CONTROL SUMMARYWG2347105
Semi-Volatile Organic Compounds (GC) by Method 3511/8015 L1765933-01,02,03,04,05,06,07,08
Method Blank (MB)
(MB) R4110496-1 08/22/24 05:48
MB Result MB Qualifier MB MDL MB RDL
Analyte ug/l ug/l ug/l
TPH (GC/FID) High Fraction U 24.7 100
(S) o-Terphenyl 117 52.0-156
Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD)
(LCS) R4110496-2 08/22/24 06:08 • (LCSD) R4110496-3 08/22/24 06:28
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 %%%%%
TPH (GC/FID) High Fraction 1500 1590 1660 106 111 50.0-150 4.31 20
(S) o-Terphenyl 121 126 52.0-156
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
One Atlas L1765933 08/24/24 17:28 19 of 22
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
One Atlas L1765933 08/26/24 08:39 19 of 22
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
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
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
One Atlas L1765933 08/24/24 17:28 20 of 22
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
One Atlas L1765933 08/26/24 08:39 20 of 22

Pace Analytical National 12065 Lebanon Rd Mount Juliet, TN 37122
Alabama 40660 Nebraska NE-OS-15-05
Alaska 17-026 Nevada TN000032021-1
Arizona AZ0612 New Hampshire 2975
Arkansas 88-0469 New Jersey–NELAP TN002
California 2932 New Mexico ¹TN00003
Colorado TN00003 New York 11742
Connecticut PH-0197 North Carolina Env375
Florida E87487 North Carolina ¹DW21704
Georgia NELAP North Carolina ³41
Georgia ¹923 North Dakota R-140
Idaho TN00003 Ohio–VAP CL0069
Illinois 200008 Oklahoma 9915
Indiana C-TN-01 Oregon TN200002
Iowa 364 Pennsylvania 68-02979
Kansas E-10277 Rhode Island LAO00356
Kentucky ¹ ⁶KY90010 South Carolina 84004002
Kentucky ²16 South Dakota n/a
Louisiana AI30792 Tennessee ¹ ⁴2006
Louisiana LA018 Texas T104704245-20-18
Maine TN00003 Texas ⁵LAB0152
Maryland 324 Utah TN000032021-11
Massachusetts M-TN003 Vermont VT2006
Michigan 9958 Virginia 110033
Minnesota 047-999-395 Washington C847
Mississippi TN00003 West Virginia 233
Missouri 340 Wisconsin 998093910
Montana CERT0086 Wyoming A2LA
A2LA – ISO 17025 1461.01 AIHA-LAP,LLC EMLAP 100789
A2LA – ISO 17025 ⁵1461.02 DOD 1461.01
Canada 1461.01 USDA P330-15-00234
EPA–Crypto TN00003
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
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
One Atlas L1765933 08/24/24 17:28 21 of 22
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
One Atlas L1765933 08/26/24 08:39 21 of 22