DERR-2025-000177

Page 1
ATLAS

January 6, 2025
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-04
UDEQ Technical Services Contract #216364
Dear Mr. Crim:
Please find attached a copy of the November 2024 Groundwater Monitoring Report for the
above referenced site.
INTRODUCTION
The work conducted on November 13, 2024, was performed on behalf of the Utah Department
Environmental Quality, Division of Environmental Response and Remediation (DERR), under
Work Assignment MUZ-04.
FIELD PARAMETER WELL PURGING PROCEDURES AND CHEMICAL ANALYSIS
The approved work plan included collecting water samples from monitoring wells MW -A through
MW -G. The site map depicting the groundwater monitoring well locations and surrounding area
features is presented as Figure 1. 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. The samples were analyzed for methyl tert-butyl
ether (MTBE), benzene, toluene, ethyl benzene, total xylenes, naphthalene (MBTEXN) using
EPA Method 8260, and for total petroleum hydrocarbons as gasoline (TPH-GRO) 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

ATLAS
Page 2
2025.
Work Assignment MUZ-04. The next groundwater monitoring event is scheduled for February
The November 2024 sampling round was the second groundwater monitoring event under
the site, Atlas recommends the quarterly groundwater monitoring program continue at the site.
November 2024 laboratory results and historical groundwater monitoring data collected at
above their respective ISLs in off-site wells MW-B, MW-C, and MW-F. Based upon the
Review of the groundwater data indicates the presence of benzene, TPH-GRO, and TPH-DRO
CONCLUSIONS AND RECOMMENDATIONS
that these concentrations should be considered minimum values.
analyzed outside of the hold times. The laboratory flagged these data (“Q”) and stated
however, some of the samples required dilutions and so when they were re-run they were
laboratory reported via email that the samples were initially run within hold times;
MW-D; and the TPH-DRO analysis for MW-G were analyzed outside of holding times. The
benzene and TPH-GRO analysis for MW-C; the benzene, ethylbenzene, and naphthalene for
possibly in the field at the time of collection. In addition, the laboratory reported that the
may have been compromised in the laboratory at the time of the TPH-DRO analysis, or
of the data and the response from the laboratory, it is likely that the field duplicate sample
the laboratory responded that the TPH-DRO concentration is accurate. Based upon review
Atlas contacted the laboratory to request a review of the field duplicate TPH-DRO data and
monitoring wells.
sample is significantly higher than any of the TPH-DRO concentrations measure in the
the field duplicate sample. The TPH-DRO concentration measure in the field duplicate
reporting limits; however, TPH-DRO was measured at a concentration of 10.300 mg/L in
duplicate indicated no detection of the MBTEXN constituents above the laboratory
shipped along with the primary samples. The laboratory analysis of the trip blank and field
purchased from a grocery store. The trip blank was prepared by the laboratory and
was collected/prepared in the field from a new, un-opened 1-gallon container of distilled water
the primary samples for Quality Assurance/Quality Control (QA/QC). The field duplicate sample
A field duplicate (field blank as described in the work plan) and trip blank were submitted with
the analytical report is included in Appendix A.
(3.290 mg/L). The groundwater analytical results are summarized in Table 1 and a copy of
MW-F (1.780 mg/L), and TPH-DRO was measured at or above the ISL of 1.0 mg/L in MW-C
measured at or above the ISL of 1.0 mg/L in MW-B (1.040 mg/L), MW-C (8.190 mg/L), and
other MBTEXN constituents were measured above their respective ISLs. TPH-GRO was
Initial Screening Level (ISL) of 0.005 mg/L in MW-B (0.0337 mg/L) and MW-C (1.85 mg/L). No
Review of the groundwater laboratory data indicated the presence of benzene above the
groundwater gradient map is presented as Figure 2.
groundwater flows to the northwest at a gradient of 0.118 ft/ft between MW-D and MW-F. The
a groundwater gradient map for the site. The groundwater elevation data indicates
The groundwater elevation data collected from the monitoring wells were utilized to prepare
that the storm drain is compromised in the direct vicinity of the site.
and a similar event occurring during the April 2024 groundwater monitoring event, it is likely
storm drain north of the property. Given the shallow depth to groundwater measured in MW-D
storm passed through the area the night before the sampling event, sending water down the
below grade and that a groundwater mound is present near the northern property boundary. A
The November 2024 data indicate that groundwater stabilized in MW-D at a depth of 2.32 feet
FIELD PARAMETER AND CHEMICAL ANALYSIS RESULTS
Page 3
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

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:12-13-24
2
FIGURE
DRAWN BY:JCAPPROVED BY:JC
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:12-23-24
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:12-23-24
4
FIGURE
DRAWN BY:JCAPPROVED BY:JC
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:12-23-24
5
FIGURE
DRAWN BY:JCAPPROVED BY:JC
358 South 700 East, B518
Salt Lake City, Utah 84102
801-935-4917
MONITORING WELL LOCATION
S
PROPERTY BOUNDARY
ESTIMATED TPH-DRO ISOCONCENTRATION LINE
MEASURED IN mg/L
TPH-GRO CONCENTRATION IN mg/L
ABANDONED MONITORING WELL LOCATION

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
11/13/24 <0.00100 <0.00100 <0.00100 <0.0030 0.000771 J <0.00500 0.0544 J 0.276 14.54 0.00 84.82

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
11/13/24 0.0337 0.000955 J 0.00137 0.000956 J 0.000674 J 0.00616 1.040 0.590 14.61 0.00 84.87

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
11/13/24 1.850 Q 0.0180 0.0637 0.0458 0.000819 J 0.136 8.190 Q 3.290 14.83 0.00 84.66

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
11/13/24 <0.00100 Q <0.00100 <0.00100 Q <0.00300 <0.00100 <0.00500 Q <0.100 0.672 2.32 0.00 97.68

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
11/13/24 <0.00100 <0.00100 <0.00100 <0.00300 <0.00100 <0.00500 <0.100 <0.100 13.98 0.00 85.88

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
11/13/24 0.00238 <0.00100 <0.00100 <0.00300 <0.00100 <0.00500 1.780 <0.100 15.81 0.00 82.36
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
11/13/24 0.00270 <0.00100 0.000493 J <0.00300 0.000895 J 0.00128 J 0.667 0.355 Q 15.38 0.00 83.63

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
Q = Sample was prepared and/or analyzed past holding time as defined in the method. Concentrations should be considered minimum values.
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
December 06, 2024
One Atlas
Sample Delivery Group:L1800589
Samples Received:11/15/2024
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:
December 06, 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:
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December 06, 2024
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 5
Sr: Sample Results 6
MW-A L1800589-01 6
MW-B L1800589-02 7
MW-C L1800589-03 8
MW-D L1800589-04 9
MW-E L1800589-05 10
MW-F L1800589-06 11
MW-G L1800589-07 12
FIELD DUPLICATE L1800589-08 13
TRIP BLANK L1800589-09 14
Qc: Quality Control Summary 15
Volatile Organic Compounds (GC) by Method 8015D/GRO 15
Volatile Organic Compounds (GC/MS) by Method 8260B 17
Semi-Volatile Organic Compounds (GC) by Method 3511/8015 20
Gl: Glossary of Terms 23
Al: Accreditations & Locations 24
Sc: Sample Chain of Custody 25
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-A L1800589-01 GW Olaf Questereit 11/13/24 14:00 11/15/24 08:00
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (GC) by Method 8015D/GRO WG2407094 1 11/23/24 04:17 11/23/24 04:17 ACG Mt. Juliet, TN
Volatile Organic Compounds (GC/MS) by Method 8260B WG2407162 1 11/23/24 22:46 11/23/24 22:46 JBE Mt. Juliet, TN
Semi-Volatile Organic Compounds (GC) by Method 3511/8015 WG2406744 1 11/22/24 16:53 11/26/24 18:45 MAA Mt. Juliet, TN
Collected by Collected date/time Received date/time
MW-B L1800589-02 GW Olaf Questereit 11/13/24 13:30 11/15/24 08:00
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (GC) by Method 8015D/GRO WG2407094 1 11/23/24 04:40 11/23/24 04:40 ACG Mt. Juliet, TN
Volatile Organic Compounds (GC/MS) by Method 8260B WG2407162 1 11/23/24 23:07 11/23/24 23:07 JBE Mt. Juliet, TN
Semi-Volatile Organic Compounds (GC) by Method 3511/8015 WG2406744 1 11/22/24 16:53 11/26/24 19:05 MAA Mt. Juliet, TN
Collected by Collected date/time Received date/time
MW-C L1800589-03 GW Olaf Questereit 11/13/24 13:15 11/15/24 08:00
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (GC) by Method 8015D/GRO WG2409857 10 11/30/24 02:05 11/30/24 02:05 CDD Mt. Juliet, TN
Volatile Organic Compounds (GC/MS) by Method 8260B WG2407162 1 11/23/24 23:28 11/23/24 23:28 JBE Mt. Juliet, TN
Volatile Organic Compounds (GC/MS) by Method 8260B WG2410661 500 12/01/24 22:47 12/01/24 22:47 JBE Mt. Juliet, TN
Semi-Volatile Organic Compounds (GC) by Method 3511/8015 WG2406744 1 11/22/24 16:53 11/26/24 19:28 MAA Mt. Juliet, TN
Collected by Collected date/time Received date/time
MW-D L1800589-04 GW Olaf Questereit 11/13/24 13:00 11/15/24 08:00
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (GC) by Method 8015D/GRO WG2409857 1 11/30/24 01:02 11/30/24 01:02 CDD Mt. Juliet, TN
Volatile Organic Compounds (GC/MS) by Method 8260B WG2407162 1 11/23/24 23:49 11/23/24 23:49 JBE Mt. Juliet, TN
Volatile Organic Compounds (GC/MS) by Method 8260B WG2410661 1 12/01/24 22:26 12/01/24 22:26 JBE Mt. Juliet, TN
Semi-Volatile Organic Compounds (GC) by Method 3511/8015 WG2406744 1 11/22/24 16:53 11/28/24 02:22 MAA Mt. Juliet, TN
Collected by Collected date/time Received date/time
MW-E L1800589-05 GW Olaf Questereit 11/13/24 14:15 11/15/24 08:00
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (GC) by Method 8015D/GRO WG2407094 1 11/23/24 05:48 11/23/24 05:48 ACG Mt. Juliet, TN
Volatile Organic Compounds (GC/MS) by Method 8260B WG2407162 1 11/24/24 00:11 11/24/24 00:11 JBE Mt. Juliet, TN
Semi-Volatile Organic Compounds (GC) by Method 3511/8015 WG2406746 1 11/22/24 22:11 11/25/24 12:07 MAA Mt. Juliet, TN
Collected by Collected date/time Received date/time
MW-F L1800589-06 GW Olaf Questereit 11/13/24 14:45 11/15/24 08:00
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (GC) by Method 8015D/GRO WG2407094 1 11/23/24 06:11 11/23/24 06:11 ACG Mt. Juliet, TN
Volatile Organic Compounds (GC/MS) by Method 8260B WG2407162 1 11/24/24 00:32 11/24/24 00:32 JBE Mt. Juliet, TN
Semi-Volatile Organic Compounds (GC) by Method 3511/8015 WG2406746 1 11/22/24 22:11 11/25/24 12:26 TJD 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-G L1800589-07 GW Olaf Questereit 11/13/24 14:30 11/15/24 08:00
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (GC) by Method 8015D/GRO WG2407094 1 11/23/24 06:34 11/23/24 06:34 ACG Mt. Juliet, TN
Volatile Organic Compounds (GC/MS) by Method 8260B WG2407162 1 11/24/24 00:54 11/24/24 00:54 JBE Mt. Juliet, TN
Semi-Volatile Organic Compounds (GC) by Method 3511/8015 WG2406746 3 11/22/24 22:11 11/25/24 12:46 DMG Mt. Juliet, TN
Semi-Volatile Organic Compounds (GC) by Method 3511/8015 WG2410555 1.11 11/30/24 10:34 12/01/24 15:16 JDJ Mt. Juliet, TN
Collected by Collected date/time Received date/time
FIELD DUPLICATE L1800589-08 GW Olaf Questereit 11/13/24 14:05 11/15/24 08:00
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (GC) by Method 8015D/GRO WG2407094 1 11/23/24 06:57 11/23/24 06:57 ACG Mt. Juliet, TN
Volatile Organic Compounds (GC/MS) by Method 8260B WG2407162 1 11/24/24 01:16 11/24/24 01:16 JBE Mt. Juliet, TN
Semi-Volatile Organic Compounds (GC) by Method 3511/8015 WG2406746 5 11/22/24 22:11 11/27/24 03:22 MAA Mt. Juliet, TN
Collected by Collected date/time Received date/time
TRIP BLANK L1800589-09 GW Olaf Questereit 11/13/24 00:00 11/15/24 08:00
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (GC/MS) by Method 8260B WG2407256 1 11/23/24 09:16 11/23/24 09:16 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
Project Narrative
L1800589-07 DROLVI:Surrogate failure due to matrix interference during extraction procedure.
Sample Delivery Group (SDG) Narrative
pH outside of method requirement.
Lab Sample ID Project Sample ID Method
L1800589-06 MW-F 8260B, 8015D/GRO, 3511/8015
L1800589-07 MW-G 8015D/GRO, 8260B, 3511/8015
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
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
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SAMPLE RESULTS - 01
L1800589
MW-A
Collected date/time: 11/13/24 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 54.4 J 31.4 100 1 11/23/2024 04:17 WG2407094
(S)
a,a,a-Trifluorotoluene(FID)98.9 78.0-120 11/23/2024 04:17 WG2407094
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 11/23/2024 22:46 WG2407162
Toluene U 0.278 1.00 1 11/23/2024 22:46 WG2407162
Ethylbenzene U 0.137 1.00 1 11/23/2024 22:46 WG2407162
Total Xylenes U 0.174 3.00 1 11/23/2024 22:46 WG2407162
Methyl tert-butyl ether 0.771 J 0.101 1.00 1 11/23/2024 22:46 WG2407162
Naphthalene U 1.00 5.00 1 11/23/2024 22:46 WG2407162
(S) Toluene-d8 102 80.0-120 11/23/2024 22:46 WG2407162
(S) 4-Bromofluorobenzene 103 77.0-126 11/23/2024 22:46 WG2407162
(S) 1,2-Dichloroethane-d4 100 70.0-130 11/23/2024 22:46 WG2407162
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 276 24.7 100 1 11/26/2024 18:45 WG2406744
(S) o-Terphenyl 85.8 52.0-156 11/26/2024 18:45 WG2406744
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
L1800589
MW-B
Collected date/time: 11/13/24 13:30
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 1040 31.4 100 1 11/23/2024 04:40 WG2407094
(S)
a,a,a-Trifluorotoluene(FID)101 78.0-120 11/23/2024 04:40 WG2407094
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 33.7 0.0941 1.00 1 11/23/2024 23:07 WG2407162
Toluene 0.955 J 0.278 1.00 1 11/23/2024 23:07 WG2407162
Ethylbenzene 1.37 0.137 1.00 1 11/23/2024 23:07 WG2407162
Total Xylenes 0.956 J 0.174 3.00 1 11/23/2024 23:07 WG2407162
Methyl tert-butyl ether 0.674 J 0.101 1.00 1 11/23/2024 23:07 WG2407162
Naphthalene 6.16 1.00 5.00 1 11/23/2024 23:07 WG2407162
(S) Toluene-d8 100 80.0-120 11/23/2024 23:07 WG2407162
(S) 4-Bromofluorobenzene 98.6 77.0-126 11/23/2024 23:07 WG2407162
(S) 1,2-Dichloroethane-d4 100 70.0-130 11/23/2024 23:07 WG2407162
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 590 24.7 100 1 11/26/2024 19:05 WG2406744
(S) o-Terphenyl 86.3 52.0-156 11/26/2024 19:05 WG2406744
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 L1800589 12/06/24 10:18 7 of 25
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
One Atlas L1800589 12/06/24 10:28 7 of 25
SAMPLE RESULTS - 03
L1800589
MW-C
Collected date/time: 11/13/24 13:15
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 8190 Q 314 1000 10 11/30/2024 02:05 WG2409857
(S)
a,a,a-Trifluorotoluene(FID)81.3 78.0-120 11/30/2024 02:05 WG2409857
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 1850 Q 47.1 500 500 12/01/2024 22:47 WG2410661
Toluene 18.0 0.278 1.00 1 11/23/2024 23:28 WG2407162
Ethylbenzene 63.7 0.137 1.00 1 11/23/2024 23:28 WG2407162
Total Xylenes 45.8 0.174 3.00 1 11/23/2024 23:28 WG2407162
Methyl tert-butyl ether 0.819 J 0.101 1.00 1 11/23/2024 23:28 WG2407162
Naphthalene 136 1.00 5.00 1 11/23/2024 23:28 WG2407162
(S) Toluene-d8 87.4 80.0-120 11/23/2024 23:28 WG2407162
(S) Toluene-d8 102 80.0-120 12/01/2024 22:47 WG2410661
(S) 4-Bromofluorobenzene 97.7 77.0-126 11/23/2024 23:28 WG2407162
(S) 4-Bromofluorobenzene 99.2 77.0-126 12/01/2024 22:47 WG2410661
(S) 1,2-Dichloroethane-d4 103 70.0-130 11/23/2024 23:28 WG2407162
(S) 1,2-Dichloroethane-d4 106 70.0-130 12/01/2024 22:47 WG2410661
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 3290 24.7 100 1 11/26/2024 19:28 WG2406744
(S) o-Terphenyl 85.8 52.0-156 11/26/2024 19:28 WG2406744
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 L1800589 12/06/24 10:18 8 of 25
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
One Atlas L1800589 12/06/24 10:28 8 of 25
SAMPLE RESULTS - 04
L1800589
MW-D
Collected date/time: 11/13/24 13:00
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 U Q 31.4 100 1 11/30/2024 01:02 WG2409857
(S)
a,a,a-Trifluorotoluene(FID)84.3 78.0-120 11/30/2024 01:02 WG2409857
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 Q 0.0941 1.00 1 12/01/2024 22:26 WG2410661
Toluene U 0.278 1.00 1 11/23/2024 23:49 WG2407162
Ethylbenzene U Q 0.137 1.00 1 12/01/2024 22:26 WG2410661
Total Xylenes U 0.174 3.00 1 11/23/2024 23:49 WG2407162
Methyl tert-butyl ether U 0.101 1.00 1 11/23/2024 23:49 WG2407162
Naphthalene U Q 1.00 5.00 1 12/01/2024 22:26 WG2410661
(S) Toluene-d8 104 80.0-120 11/23/2024 23:49 WG2407162
(S) Toluene-d8 104 80.0-120 12/01/2024 22:26 WG2410661
(S) 4-Bromofluorobenzene 102 77.0-126 11/23/2024 23:49 WG2407162
(S) 4-Bromofluorobenzene 98.9 77.0-126 12/01/2024 22:26 WG2410661
(S) 1,2-Dichloroethane-d4 95.7 70.0-130 11/23/2024 23:49 WG2407162
(S) 1,2-Dichloroethane-d4 106 70.0-130 12/01/2024 22:26 WG2410661
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 672 24.7 100 1 11/28/2024 02:22 WG2406744
(S) o-Terphenyl 94.7 52.0-156 11/28/2024 02:22 WG2406744
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 L1800589 12/06/24 10:18 9 of 25
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
One Atlas L1800589 12/06/24 10:28 9 of 25
SAMPLE RESULTS - 05
L1800589
MW-E
Collected date/time: 11/13/24 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 U 31.4 100 1 11/23/2024 05:48 WG2407094
(S)
a,a,a-Trifluorotoluene(FID)99.9 78.0-120 11/23/2024 05:48 WG2407094
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 11/24/2024 00:11 WG2407162
Toluene U 0.278 1.00 1 11/24/2024 00:11 WG2407162
Ethylbenzene U 0.137 1.00 1 11/24/2024 00:11 WG2407162
Total Xylenes U 0.174 3.00 1 11/24/2024 00:11 WG2407162
Methyl tert-butyl ether U 0.101 1.00 1 11/24/2024 00:11 WG2407162
Naphthalene U 1.00 5.00 1 11/24/2024 00:11 WG2407162
(S) Toluene-d8 104 80.0-120 11/24/2024 00:11 WG2407162
(S) 4-Bromofluorobenzene 107 77.0-126 11/24/2024 00:11 WG2407162
(S) 1,2-Dichloroethane-d4 97.8 70.0-130 11/24/2024 00:11 WG2407162
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 11/25/2024 12:07 WG2406746
(S) o-Terphenyl 96.3 52.0-156 11/25/2024 12:07 WG2406746
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 L1800589 12/06/24 10:18 10 of 25
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
One Atlas L1800589 12/06/24 10:28 10 of 25
SAMPLE RESULTS - 06
L1800589
MW-F
Collected date/time: 11/13/24 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 1780 31.4 100 1 11/23/2024 06:11 WG2407094
(S)
a,a,a-Trifluorotoluene(FID)111 78.0-120 11/23/2024 06:11 WG2407094
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 2.38 0.0941 1.00 1 11/24/2024 00:32 WG2407162
Toluene U 0.278 1.00 1 11/24/2024 00:32 WG2407162
Ethylbenzene U 0.137 1.00 1 11/24/2024 00:32 WG2407162
Total Xylenes U 0.174 3.00 1 11/24/2024 00:32 WG2407162
Methyl tert-butyl ether U 0.101 1.00 1 11/24/2024 00:32 WG2407162
Naphthalene U 1.00 5.00 1 11/24/2024 00:32 WG2407162
(S) Toluene-d8 104 80.0-120 11/24/2024 00:32 WG2407162
(S) 4-Bromofluorobenzene 101 77.0-126 11/24/2024 00:32 WG2407162
(S) 1,2-Dichloroethane-d4 96.7 70.0-130 11/24/2024 00:32 WG2407162
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 11/25/2024 12:26 WG2406746
(S) o-Terphenyl 90.5 52.0-156 11/25/2024 12:26 WG2406746
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 L1800589 12/06/24 10:18 11 of 25
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
One Atlas L1800589 12/06/24 10:28 11 of 25
SAMPLE RESULTS - 07
L1800589
MW-G
Collected date/time: 11/13/24 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 667 31.4 100 1 11/23/2024 06:34 WG2407094
(S)
a,a,a-Trifluorotoluene(FID)102 78.0-120 11/23/2024 06:34 WG2407094
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 2.70 0.0941 1.00 1 11/24/2024 00:54 WG2407162
Toluene U 0.278 1.00 1 11/24/2024 00:54 WG2407162
Ethylbenzene 0.493 J 0.137 1.00 1 11/24/2024 00:54 WG2407162
Total Xylenes U 0.174 3.00 1 11/24/2024 00:54 WG2407162
Methyl tert-butyl ether 0.895 J 0.101 1.00 1 11/24/2024 00:54 WG2407162
Naphthalene 1.28 J 1.00 5.00 1 11/24/2024 00:54 WG2407162
(S) Toluene-d8 98.2 80.0-120 11/24/2024 00:54 WG2407162
(S) 4-Bromofluorobenzene 99.9 77.0-126 11/24/2024 00:54 WG2407162
(S) 1,2-Dichloroethane-d4 95.8 70.0-130 11/24/2024 00:54 WG2407162
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 76.7 J 74.1 300 3 11/25/2024 12:46 WG2406746
TPH (GC/FID) High Fraction 355 Q 27.4 111 1.11 12/01/2024 15:16 WG2410555
(S) o-Terphenyl 265 J1 52.0-156 11/25/2024 12:46 WG2406746
(S) o-Terphenyl 40.0 J2 52.0-156 12/01/2024 15:16 WG2410555
Sample Narrative:
L1800589-07 WG2406746, WG2410555: Duplicate analysis performed due to surrogate failure. Results do not confirm;both analyses reported
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 L1800589 12/06/24 10:18 12 of 25
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
One Atlas L1800589 12/06/24 10:28 12 of 25
SAMPLE RESULTS - 08
L1800589
FIELD DUPLICATE
Collected date/time: 11/13/24 14:05
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 11/23/2024 06:57 WG2407094
(S)
a,a,a-Trifluorotoluene(FID)98.6 78.0-120 11/23/2024 06:57 WG2407094
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 11/24/2024 01:16 WG2407162
Toluene U 0.278 1.00 1 11/24/2024 01:16 WG2407162
Ethylbenzene U 0.137 1.00 1 11/24/2024 01:16 WG2407162
Total Xylenes U 0.174 3.00 1 11/24/2024 01:16 WG2407162
Methyl tert-butyl ether U 0.101 1.00 1 11/24/2024 01:16 WG2407162
Naphthalene U 1.00 5.00 1 11/24/2024 01:16 WG2407162
(S) Toluene-d8 105 80.0-120 11/24/2024 01:16 WG2407162
(S) 4-Bromofluorobenzene 106 77.0-126 11/24/2024 01:16 WG2407162
(S) 1,2-Dichloroethane-d4 100 70.0-130 11/24/2024 01:16 WG2407162
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 10300 123 500 5 11/27/2024 03:22 WG2406746
(S) o-Terphenyl 96.3 52.0-156 11/27/2024 03:22 WG2406746
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 L1800589 12/06/24 10:18 13 of 25
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
One Atlas L1800589 12/06/24 10:28 13 of 25
SAMPLE RESULTS - 09
L1800589
TRIP BLANK
Collected date/time: 11/13/24 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 11/23/2024 09:16 WG2407256
Toluene U 0.278 1.00 1 11/23/2024 09:16 WG2407256
Ethylbenzene U 0.137 1.00 1 11/23/2024 09:16 WG2407256
Total Xylenes U 0.174 3.00 1 11/23/2024 09:16 WG2407256
Methyl tert-butyl ether U 0.101 1.00 1 11/23/2024 09:16 WG2407256
Naphthalene U 1.00 5.00 1 11/23/2024 09:16 WG2407256
(S) Toluene-d8 111 80.0-120 11/23/2024 09:16 WG2407256
(S) 4-Bromofluorobenzene 104 77.0-126 11/23/2024 09:16 WG2407256
(S) 1,2-Dichloroethane-d4 91.2 70.0-130 11/23/2024 09:16 WG2407256
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 L1800589 12/06/24 10:18 14 of 25
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
One Atlas L1800589 12/06/24 10:28 14 of 25
QUALITY CONTROL SUMMARYWG2407094
Volatile Organic Compounds (GC) by Method 8015D/GRO L1800589-01,02,05,06,07,08
Method Blank (MB)
(MB) R4151414-2 11/22/24 23:20
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)99.2 78.0-120
Laboratory Control Sample (LCS)
(LCS) R4151414-1 11/22/24 22:19
Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier
Analyte ug/l ug/l %%
TPH (GC/FID) Low Fraction 5000 5180 104 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 L1800589 12/06/24 10:18 15 of 25
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
One Atlas L1800589 12/06/24 10:28 15 of 25
QUALITY CONTROL SUMMARYWG2409857
Volatile Organic Compounds (GC) by Method 8015D/GRO L1800589-03,04
Method Blank (MB)
(MB) R4152951-2 11/29/24 23:30
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)85.4 78.0-120
Laboratory Control Sample (LCS)
(LCS) R4152951-1 11/29/24 22:14
Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier
Analyte ug/l ug/l %%
TPH (GC/FID) Low Fraction 5000 4400 88.0 72.0-127
(S)
a,a,a-Trifluorotoluene(FID) 92.4 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 L1800589 12/06/24 10:18 16 of 25
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
One Atlas L1800589 12/06/24 10:28 16 of 25
QUALITY CONTROL SUMMARYWG2407162
Volatile Organic Compounds (GC/MS) by Method 8260B L1800589-01,02,03,04,05,06,07,08
Method Blank (MB)
(MB) R4152002-2 11/23/24 19:42
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 101 77.0-126
(S) 1,2-Dichloroethane-d4 104 70.0-130
Laboratory Control Sample (LCS)
(LCS) R4152002-1 11/23/24 18:59
Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier
Analyte ug/l ug/l %%
Benzene 5.00 5.47 109 70.0-123
Toluene 5.00 5.09 102 79.0-120
Ethylbenzene 5.00 5.06 101 79.0-123
Total Xylenes 15.0 14.9 99.3 79.0-123
Methyl tert-butyl ether 5.00 5.62 112 68.0-125
Naphthalene 5.00 3.97 79.4 54.0-135 J
(S) Toluene-d8 96.9 80.0-120
(S) 4-Bromofluorobenzene 101 77.0-126
(S) 1,2-Dichloroethane-d4 105 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 L1800589 12/06/24 10:18 17 of 25
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
One Atlas L1800589 12/06/24 10:28 17 of 25
QUALITY CONTROL SUMMARYWG2407256
Volatile Organic Compounds (GC/MS) by Method 8260B L1800589-09
Method Blank (MB)
(MB) R4150363-3 11/23/24 08:11
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 110 80.0-120
(S) 4-Bromofluorobenzene 104 77.0-126
(S) 1,2-Dichloroethane-d4 94.0 70.0-130
Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD)
(LCS) R4150363-1 11/23/24 07:05 • (LCSD) R4150363-2 11/23/24 07:27
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 4.92 4.92 98.4 98.4 70.0-123 0.000 20
Toluene 5.00 5.07 5.10 101 102 79.0-120 0.590 20
Ethylbenzene 5.00 5.08 4.98 102 99.6 79.0-123 1.99 20
Total Xylenes 15.0 14.7 14.8 98.0 98.7 79.0-123 0.678 20
Methyl tert-butyl ether 5.00 4.88 4.70 97.6 94.0 68.0-125 3.76 20
Naphthalene 5.00 4.46 4.69 89.2 93.8 54.0-135 J J 5.03 20
(S) Toluene-d8 101 103 80.0-120
(S) 4-Bromofluorobenzene 95.7 99.1 77.0-126
(S) 1,2-Dichloroethane-d4 95.2 95.1 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 L1800589 12/06/24 10:18 18 of 25
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
One Atlas L1800589 12/06/24 10:28 18 of 25
QUALITY CONTROL SUMMARYWG2410661
Volatile Organic Compounds (GC/MS) by Method 8260B L1800589-03,04
Method Blank (MB)
(MB) R4152440-2 12/01/24 21:42
MB Result MB Qualifier MB MDL MB RDL
Analyte ug/l ug/l ug/l
Benzene U 0.0941 1.00
Ethylbenzene U 0.137 1.00
Naphthalene U 1.00 5.00
(S) Toluene-d8 107 80.0-120
(S) 4-Bromofluorobenzene 103 77.0-126
(S) 1,2-Dichloroethane-d4 100 70.0-130
Laboratory Control Sample (LCS)
(LCS) R4152440-1 12/01/24 20:59
Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier
Analyte ug/l ug/l %%
Benzene 5.00 4.20 84.0 70.0-123
Ethylbenzene 5.00 4.53 90.6 79.0-123
Naphthalene 5.00 4.68 93.6 54.0-135 J
(S) Toluene-d8 102 80.0-120
(S) 4-Bromofluorobenzene 104 77.0-126
(S) 1,2-Dichloroethane-d4 108 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 L1800589 12/06/24 10:18 19 of 25
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
One Atlas L1800589 12/06/24 10:28 19 of 25
QUALITY CONTROL SUMMARYWG2406744
Semi-Volatile Organic Compounds (GC) by Method 3511/8015 L1800589-01,02,03,04
Method Blank (MB)
(MB) R4151017-1 11/26/24 09:12
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 80.0 52.0-156
Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD)
(LCS) R4151017-2 11/26/24 09:32 • (LCSD) R4151017-3 11/26/24 09:54
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 1350 1370 90.0 91.3 50.0-150 1.47 20
(S) o-Terphenyl 87.0 86.5 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 SUMMARYWG2406746
Semi-Volatile Organic Compounds (GC) by Method 3511/8015 L1800589-05,06,07,08
Method Blank (MB)
(MB) R4150973-1 11/25/24 11:07
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 84.5 52.0-156
Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD)
(LCS) R4150973-2 11/25/24 11:27 • (LCSD) R4150973-3 11/25/24 11:47
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 1430 1420 95.3 94.7 50.0-150 0.702 20
(S) o-Terphenyl 93.0 90.0 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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QUALITY CONTROL SUMMARYWG2410555
Semi-Volatile Organic Compounds (GC) by Method 3511/8015 L1800589-07
Method Blank (MB)
(MB) R4152272-1 12/01/24 11:34
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 116 52.0-156
Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD)
(LCS) R4152272-2 12/01/24 11:55 • (LCSD) R4152272-3 12/01/24 12:15
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 1560 1500 104 100 50.0-150 3.92 20
(S) o-Terphenyl 125 89.0 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
J The identification of the analyte is acceptable; the reported value is an estimate.
J1 Surrogate recovery limits have been exceeded; values are outside upper control limits.
J2 Surrogate recovery limits have been exceeded; values are outside lower control limits.
Q Sample was prepared and/or analyzed past holding time as defined in the method. Concentrations should be
considered minimum values.
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
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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
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