FA-29752_48872_CA_SAR_20230117

Post Excavation Soil Contamination Assessment Sandhills Office Systems 444 East Broad Avenue
Rockingham, North Carolina 28379

EI Project No. ENMO230002.00
Prepared For: Mr. Laverne Shultz PLS Services
P.O. Box 850
Rockingham, North Carolina 28380

Prepared By:
The EI Group, Inc. 2101 Gateway Centre Boulevard, Suite 200 Morrisville, North Carolina 27560 Phone: [phone]
January 17, 2023

TABLE OF CONTENTS
1.0 INTRODUCTION ..................................................................................................................... 1
1.1 Background Information .......................................................................................... 1 1.2 Scope of Work ............................................................................................................ 1
2.0 FIELD ACTIVITIES ................................................................................................................. 3 2.1 Soil Borings ................................................................................................................. 3
3.0 LABORATORY ANALYTICAL RESULTS ........................................................................ 4 4.0 CONCLUSIONS AND RECOMMENDATIONS ................................................................. 5
Table 1. Analytical Results Figure 1: Site Location Map Figure 2: Analytical Results Map

APPENDICES Appendix A: Laboratory Analytical Results
Supplemental Soil Sampling Report Sandhills Office Systems
444 East Broad Avenue, Rockingham, North Carolina

1

1.0 INTRODUCTION The EI Group, Inc. (EI) has completed post excavation soil sampling to determine impacts from former USTs located at 444 East Broad Avenue, Rockingham (Richmond County),
North Carolina. EI mobilized to the property along with Regional Probing Services, Inc., a licensed drilling contractor, to implement direct push technology for soil borings and soil sapling for laboratory analysis. This assessment was authorized by Mr. Laverne Shultz, PLS Services, via a technical/cost proposal originally submitted by EI and accepted on January 4, 2023. The proposal was subsequently reviewed and approved by NC DEQ.
This report includes a brief summary of the scope of work conducted, findings, and conclusions. Figure 1 shows the location of the site. Figure 2 shows the subject property and soil boring locations with analytical results.
The following report is provided for the sole use of PLS Services, or its affiliates, agents, or designees with a security interest on the subject property for the project for which it was prepared. Use of this report by any third parties will be at the party’s sole risk, and EI disclaims any liability for any such use or reliance by third parties. 1.1 Background Information
Mr. Laverne Shultz, PLS Services, contracted EI to perform soil sampling in an area that formerly contained regulated USTs. According to Mr. Shultz, there were two on the property: one 3K- gallon tank containing gasoline fuel, and one 1K gallon tank containing diesel fuel. Although
the historical records and documents are very limited for this site, we understand that the USTs were removed by a previous owner. Based EI’s inquiry to the NCDEQ for records concerning the USTs, the UST Section does not have documentation concerning USTs.

We understood that Mr. Shultz is aware of the former UST locations and the area that was
excavated to confirm the USTs were removed. The excavation was completed without NCDEQ’s knowledge and did not satisfy UST Closure Guidelines. As such, EI conferred with the UST Section and developed a work plan to assess the soils in the former UST basins to determine whether soil impacts are present in excess of UST Soil Action Limits. 1.2 Scope of Work EI implemented the approved soil sampling and analysis plan on January 9, 2023 to evaluate
soil contaminant levels from the former USTs. As per the regulatory guidance, the soil would be analyzed via Total Petroleum Hydrocarbons- Gasoline Range Organics (GROs) and Diesel Range Organics (DROs) by EPA Methods 8015D and 8015C. The field activities are summarized in subsequent sections along with an evaluation of the laboratory analytical results in comparison with the TPH Action Limits. The conclusions and recommendations are
included in herein.
Supplemental Soil Sampling Report Sandhills Office Systems
444 East Broad Avenue, Rockingham, North Carolina

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2.0 FIELD ACTIVITIES Parker Alvis, Environmental Scientist of EI mobilized to the subject property along with Regional Probing Services, a licensed driller a on January 9, 2023 to take soil samples. The
area of excavation that surrounded the former tank locations was marked by Mr. Shultz using white pin flags. Prior to drilling activities, EI ordered a utility locate and conducted a site walkover to select the boring/sample locations. Sample locations were selected in accordance with UST Guidelines to include: two midline samples, and four sidewall samples in native soils around the former tank locations. There were no underground utility conflicts observed
within the work area. Refer to Figure 2 for the soil boring locations and a summary of their results. 2.1 Soil Borings
Six soil borings were advanced at the proposed locations to a maximum depth of 12 feet bgs. Soils encountered generally consisted of reddish-brown to gray and greenish-gray silty clay with minor sand from the surface down to 12 feet bgs. Groundwater was encountered at approximately 11 feet bgs but saturation was only observed in the midline soil borings (SB-5, and SB-6). Regional Probing Services, Inc. used a truck mounted GeoProbe to advance the
six soil borings using direct push technology (DPT) in the designated sample locations. All samples were collected using laboratory-prepared bottles and sent to Pace Analytical Laboratories for analyses: TPH GRO Method 8015D and TPH DRO Method 8015C. Laboratory analytical results are summarized below, and the laboratory report is attached.

Supplemental Soil Sampling Report Sandhills Office Systems
444 East Broad Avenue, Rockingham, North Carolina

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3.0 LABORATORY ANALYTICAL RESULTS
Soil Borings/Analysis TPH Action Limits SB-1 SB-2 SB-3 SB-4 SB-5 SB-6
Sampling Date
GRO Method 8015D 50 mg/Kg 2.48 J 13.5 BRL BRL 315 161
DRO Method 8015C 100 mg/Kg 5.64 19.1 3.22 J 3.92 38.5 BRL
Table 1. Laboratory Analytical Results (mg/Kg)
BRL - Below Reportable Limit Bold - result is above TPH Action Limit
*J - Result is less than the RL but greater than or equal to the method detection limit (MDL) and the
conentraoin is an approximate value.
1/9/2023
According to the laboratory analytical report, petroleum impacts were confirmed in each soil
sample collected. The TPH Action limit for DROs of 100 milligram per kilogram (mg/kg) or part per million (ppm) was not exceeded; however, SB-5 and SB-6 were both above the TPH Action limit for GROs. The bolded values in the table are above the TPH Action Limit of 50 mg/kg or ppm for GROs.
A copy of the laboratory analytical report is included in Appendix B. 4.0 CONCLUSIONS AND RECOMMENDATIONS
Based on the laboratory analytical results for the current assessment, we conclude and recommend the following:
• There is evidence of petroleum impacts within the former UST area, more
specifically, in the midline samples (SB-5, and SB-6).
• There were no samples that exceeded the TPH Action limit for DROs, however, two
samples (SB-5 and SB-6) exceeded the TPH Action Limit for GROs of 50 mg/kg or
ppm.
• Per NC DEQ UST Guidelines, a Limited Site Assessment is warranted.

• The information presented herein should be forwarded to the NCDEQ, DWM – UST Section of Wilmington Regional Office.

FIGURES

SITE LOCATION MAP
444 East Broad Avenue,Rockingham, North CarolinaShownSCALE:
QUAD:Google Earth
PROJECT NUMBER:ENMO230002.00
FIGURE NUMBER:1
SUBJECTPROPERTY
Commercial
Residential
ANALYTICAL RESULTS MAP
444 East Broad AvenueRockingham, North Carolina
No ScaleSCALE:
SOURCE:EI Drone Photograph
PROJECT NUMBER:ENMO230002.00
FIGURE NUMBER:2Soil Borings
Former Tank Locations
SB -1
GRO:2.48J ug/kg
DRO: 5.64 ug/kg
SB -2GRO: 13.5 ug/kgDRO: 19.1 ug/kg
SB -3GRO: BRL DRO: 3.22J ug/kg
SB -4
GRO: BRL
DRO: 3.92 ug/kg
SB -5GRO: 315 ug/kgDRO: 38.5 ug/kg
SB -6
GRO: 161 ug/kg
DRO: BRL
Sandhills Office Systems

APPENDIX A
LABORATORY ANALYTICAL REPORT

ANALYTICAL REPORT
January 13, 2023
The EI Group, Inc. - NC
Sample Delivery Group:L1574560
Samples Received:01/10/2023
Project Number:
Description:Rockingham UST
Report To:Parker Alvis
2101 Gateway Centre Blvd, Ste 278
Morrisville, NC 27560
Entire Report Reviewed By:
January 13, 2023
[Preliminary Report]
Heather J Wagner
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 www.pacenational.com
1 Cp
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January 16, 2023
Heather J Wagner
Project Manager
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TABLE OF CONTENTS
Cp: Cover Page 1
Tc: Table of Contents 2
Ss: Sample Summary 3
Cn: Case Narrative 4
Sr: Sample Results 5
SB-1 L1574560-01 5
SB-2 L1574560-02 6
SB-3 L1574560-03 7
SB-4 L1574560-04 8
SB-5 L1574560-05 9
SB-6 L1574560-06 10
Qc: Quality Control Summary 11
Total Solids by Method 2540 G-2011 11
Volatile Organic Compounds (GC) by Method 8015D/GRO 12
Semi-Volatile Organic Compounds (GC) by Method 8015C 13
Gl: Glossary of Terms 15
Al: Accreditations & Locations 16
Sc: Sample Chain of Custody 17
1 Cp
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SAMPLE SUMMARY
Collected by Collected date/time Received date/time
SB-1 L1574560-01 Solid Parker Alvis 01/09/23 09:35 01/10/23 08:45
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Total Solids by Method 2540 G-2011 WG1986604 1 01/11/23 13:24 01/11/23 13:40 CMK Mt. Juliet, TN
Volatile Organic Compounds (GC) by Method 8015D/GRO WG1986904 41.8 01/09/23 09:35 01/11/23 15:13 BAM Mt. Juliet, TN
Semi-Volatile Organic Compounds (GC) by Method 8015C WG1986459 1 01/11/23 19:32 01/12/23 11:05 JAS Mt. Juliet, TN
Collected by Collected date/time Received date/time
SB-2 L1574560-02 Solid Parker Alvis 01/09/23 09:57 01/10/23 08:45
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Total Solids by Method 2540 G-2011 WG1986604 1 01/11/23 13:24 01/11/23 13:40 CMK Mt. Juliet, TN
Volatile Organic Compounds (GC) by Method 8015D/GRO WG1986904 36.5 01/09/23 09:57 01/11/23 15:33 BAM Mt. Juliet, TN
Semi-Volatile Organic Compounds (GC) by Method 8015C WG1986459 1 01/11/23 19:32 01/12/23 11:31 JAS Mt. Juliet, TN
Collected by Collected date/time Received date/time
SB-3 L1574560-03 Solid Parker Alvis 01/09/23 10:03 01/10/23 08:45
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Total Solids by Method 2540 G-2011 WG1986604 1 01/11/23 13:24 01/11/23 13:40 CMK Mt. Juliet, TN
Volatile Organic Compounds (GC) by Method 8015D/GRO WG1986904 39.5 01/09/23 10:03 01/11/23 15:54 BAM Mt. Juliet, TN
Semi-Volatile Organic Compounds (GC) by Method 8015C WG1986459 1 01/11/23 19:32 01/12/23 11:58 JAS Mt. Juliet, TN
Collected by Collected date/time Received date/time
SB-4 L1574560-04 Solid Parker Alvis 01/09/23 10:19 01/10/23 08:45
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Total Solids by Method 2540 G-2011 WG1986604 1 01/11/23 13:24 01/11/23 13:40 CMK Mt. Juliet, TN
Volatile Organic Compounds (GC) by Method 8015D/GRO WG1986904 38 01/09/23 10:19 01/11/23 16:14 BAM Mt. Juliet, TN
Semi-Volatile Organic Compounds (GC) by Method 8015C WG1986459 1 01/11/23 19:32 01/12/23 12:24 JAS Mt. Juliet, TN
Collected by Collected date/time Received date/time
SB-5 L1574560-05 Solid Parker Alvis 01/09/23 10:31 01/10/23 08:45
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Total Solids by Method 2540 G-2011 WG1986604 1 01/11/23 13:24 01/11/23 13:40 CMK Mt. Juliet, TN
Volatile Organic Compounds (GC) by Method 8015D/GRO WG1986904 33.5 01/09/23 10:31 01/11/23 16:35 BAM Mt. Juliet, TN
Semi-Volatile Organic Compounds (GC) by Method 8015C WG1986625 1 01/12/23 05:59 01/13/23 10:48 JAS Mt. Juliet, TN
Collected by Collected date/time Received date/time
SB-6 L1574560-06 Solid Parker Alvis 01/09/23 10:50 01/10/23 08:45
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Total Solids by Method 2540 G-2011 WG1986604 1 01/11/23 13:24 01/11/23 13:40 CMK Mt. Juliet, TN
Volatile Organic Compounds (GC) by Method 8015D/GRO WG1986904 36 01/09/23 10:50 01/11/23 16:55 BAM Mt. Juliet, TN
Semi-Volatile Organic Compounds (GC) by Method 8015C WG1986625 1 01/12/23 05:59 01/13/23 11:00 JAS Mt. Juliet, TN
1 Cp
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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]
Heather J Wagner
Project Manager
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
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Heather J Wagner
Project Manager
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SAMPLE RESULTS - 01
L1574560
SB-1
Collected date/time: 01/09/23 09:35
Total Solids by Method 2540 G-2011
Result Qualifier Dilution Analysis Batch
Analyte %date / time
Total Solids 84.4 1 01/11/2023 13:40 WG1986604
Volatile Organic Compounds (GC) by Method 8015D/GRO
Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch
Analyte mg/kg mg/kg mg/kg date / time
TPH (GC/FID) Low Fraction 2.48 J 1.18 5.42 41.8 01/11/2023 15:13 WG1986904
(S) a,a,a-Trifluorotoluene(FID)93.5 77.0-120 01/11/2023 15:13 WG1986904
Semi-Volatile Organic Compounds (GC) by Method 8015C
Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch
Analyte mg/kg mg/kg mg/kg date / time
TPH (GC/FID) High Fraction 5.64 0.912 4.74 1 01/12/2023 11:05 WG1986459
(S) o-Terphenyl 55.1 18.0-148 01/12/2023 11:05 WG1986459
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
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SAMPLE RESULTS - 02
L1574560
SB-2
Collected date/time: 01/09/23 09:57
Total Solids by Method 2540 G-2011
Result Qualifier Dilution Analysis Batch
Analyte %date / time
Total Solids 74.4 1 01/11/2023 13:40 WG1986604
Volatile Organic Compounds (GC) by Method 8015D/GRO
Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch
Analyte mg/kg mg/kg mg/kg date / time
TPH (GC/FID) Low Fraction 13.5 1.25 5.76 36.5 01/11/2023 15:33 WG1986904
(S) a,a,a-Trifluorotoluene(FID)90.8 77.0-120 01/11/2023 15:33 WG1986904
Semi-Volatile Organic Compounds (GC) by Method 8015C
Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch
Analyte mg/kg mg/kg mg/kg date / time
TPH (GC/FID) High Fraction 19.1 1.03 5.37 1 01/12/2023 11:31 WG1986459
(S) o-Terphenyl 57.9 18.0-148 01/12/2023 11:31 WG1986459
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
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SAMPLE RESULTS - 03
L1574560
SB-3
Collected date/time: 01/09/23 10:03
Total Solids by Method 2540 G-2011
Result Qualifier Dilution Analysis Batch
Analyte %date / time
Total Solids 80.7 1 01/11/2023 13:40 WG1986604
Volatile Organic Compounds (GC) by Method 8015D/GRO
Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch
Analyte mg/kg mg/kg mg/kg date / time
TPH (GC/FID) Low Fraction U 1.19 5.49 39.5 01/11/2023 15:54 WG1986904
(S) a,a,a-Trifluorotoluene(FID)93.9 77.0-120 01/11/2023 15:54 WG1986904
Semi-Volatile Organic Compounds (GC) by Method 8015C
Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch
Analyte mg/kg mg/kg mg/kg date / time
TPH (GC/FID) High Fraction 3.22 J 0.953 4.96 1 01/12/2023 11:58 WG1986459
(S) o-Terphenyl 80.2 18.0-148 01/12/2023 11:58 WG1986459
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
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SAMPLE RESULTS - 04
L1574560
SB-4
Collected date/time: 01/09/23 10:19
Total Solids by Method 2540 G-2011
Result Qualifier Dilution Analysis Batch
Analyte %date / time
Total Solids 67.8 1 01/11/2023 13:40 WG1986604
Volatile Organic Compounds (GC) by Method 8015D/GRO
Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch
Analyte mg/kg mg/kg mg/kg date / time
TPH (GC/FID) Low Fraction U 1.47 6.79 38 01/11/2023 16:14 WG1986904
(S) a,a,a-Trifluorotoluene(FID)94.3 77.0-120 01/11/2023 16:14 WG1986904
Semi-Volatile Organic Compounds (GC) by Method 8015C
Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch
Analyte mg/kg mg/kg mg/kg date / time
TPH (GC/FID) High Fraction 3.29 J 1.13 5.90 1 01/12/2023 12:24 WG1986459
(S) o-Terphenyl 44.8 18.0-148 01/12/2023 12:24 WG1986459
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
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SAMPLE RESULTS - 05
L1574560
SB-5
Collected date/time: 01/09/23 10:31
Total Solids by Method 2540 G-2011
Result Qualifier Dilution Analysis Batch
Analyte %date / time
Total Solids 77.7 1 01/11/2023 13:40 WG1986604
Volatile Organic Compounds (GC) by Method 8015D/GRO
Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch
Analyte mg/kg mg/kg mg/kg date / time
TPH (GC/FID) Low Fraction 315 1.09 5.03 33.5 01/11/2023 16:35 WG1986904
(S) a,a,a-Trifluorotoluene(FID)95.9 77.0-120 01/11/2023 16:35 WG1986904
Semi-Volatile Organic Compounds (GC) by Method 8015C
Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch
Analyte mg/kg mg/kg mg/kg date / time
TPH (GC/FID) High Fraction 38.5 0.990 5.15 1 01/13/2023 10:48 WG1986625
(S) o-Terphenyl 65.6 18.0-148 01/13/2023 10:48 WG1986625
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
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SAMPLE RESULTS - 06
L1574560
SB-6
Collected date/time: 01/09/23 10:50
Total Solids by Method 2540 G-2011
Result Qualifier Dilution Analysis Batch
Analyte %date / time
Total Solids 80.7 1 01/11/2023 13:40 WG1986604
Volatile Organic Compounds (GC) by Method 8015D/GRO
Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch
Analyte mg/kg mg/kg mg/kg date / time
TPH (GC/FID) Low Fraction 161 1.10 5.06 36 01/11/2023 16:55 WG1986904
(S) a,a,a-Trifluorotoluene(FID)94.3 77.0-120 01/11/2023 16:55 WG1986904
Semi-Volatile Organic Compounds (GC) by Method 8015C
Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch
Analyte mg/kg mg/kg mg/kg date / time
TPH (GC/FID) High Fraction U 0.952 4.95 1 01/13/2023 11:00 WG1986625
(S) o-Terphenyl 57.9 18.0-148 01/13/2023 11:00 WG1986625
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
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QUALITY CONTROL SUMMARYWG1986604
Total Solids by Method 2540 G-2011 L1574560-01,02,03,04,05,06
Method Blank (MB)
(MB) R3880314-1 01/11/23 13:40
MB Result MB Qualifier MB MDL MB RDL
Analyte %%%
Total Solids 0.000
L1574431-11 Original Sample (OS) • Duplicate (DUP)
(OS) L1574431-11 01/11/23 13:40 • (DUP) R3880314-3 01/11/23 13:40
Original Result DUP Result Dilution DUP RPD DUP Qualifier DUP RPD
Limits
Analyte %%%%
Total Solids 86.7 87.9 1 1.32 10
Laboratory Control Sample (LCS)
(LCS) R3880314-2 01/11/23 13:40
Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier
Analyte %%%%
Total Solids 50.0 50.0 100 85.0-115
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
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QUALITY CONTROL SUMMARYWG1986904
Volatile Organic Compounds (GC) by Method 8015D/GRO L1574560-01,02,03,04,05,06
Method Blank (MB)
(MB) R3880925-2 01/11/23 11:52
MB Result MB Qualifier MB MDL MB RDL
Analyte mg/kg mg/kg mg/kg
TPH (GC/FID) Low Fraction U 0.543 2.50
(S)
a,a,a-Trifluorotoluene(FID)93.3 77.0-120
Laboratory Control Sample (LCS)
(LCS) R3880925-1 01/11/23 10:51
Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier
Analyte mg/kg mg/kg %%
TPH (GC/FID) Low Fraction 5.50 6.29 114 72.0-127
(S)
a,a,a-Trifluorotoluene(FID) 110 77.0-120
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
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QUALITY CONTROL SUMMARYWG1986459
Semi-Volatile Organic Compounds (GC) by Method 8015C L1574560-01,02,03,04
Method Blank (MB)
(MB) R3880444-1 01/12/23 09:20
MB Result MB Qualifier MB MDL MB RDL
Analyte mg/kg mg/kg mg/kg
TPH (GC/FID) High Fraction U 0.769 4.00
(S) o-Terphenyl 66.7 18.0-148
Laboratory Control Sample (LCS)
(LCS) R3880444-2 01/12/23 09:34
Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier
Analyte mg/kg mg/kg %%
TPH (GC/FID) High Fraction 50.0 29.5 59.0 50.0-150
(S) o-Terphenyl 67.1 18.0-148
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
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QUALITY CONTROL SUMMARYWG1986625
Semi-Volatile Organic Compounds (GC) by Method 8015C L1574560-05,06
Method Blank (MB)
(MB) R3880855-1 01/13/23 09:21
MB Result MB Qualifier MB MDL MB RDL
Analyte mg/kg mg/kg mg/kg
TPH (GC/FID) High Fraction U 0.769 4.00
(S) o-Terphenyl 69.4 18.0-148
Laboratory Control Sample (LCS)
(LCS) R3880855-2 01/13/23 09:33
Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier
Analyte mg/kg mg/kg %%
TPH (GC/FID) High Fraction 50.0 32.6 65.2 50.0-150
(S) o-Terphenyl 82.6 18.0-148
L1574874-07 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD)
(OS) L1574874-07 01/13/23 11:25 • (MS) R3880855-3 01/13/23 11:38 • (MSD) R3880855-4 01/13/23 11:50
Spike Amount
(dry)
Original Result
(dry)MS Result (dry)MSD Result
(dry)MS Rec.MSD Rec.Dilution Rec. Limits MS Qualifier MSD Qualifier RPD RPD Limits
Analyte mg/kg mg/kg mg/kg mg/kg %%%%%
TPH (GC/FID) High Fraction 48.6 959 837 1180 0.000 434 250 50.0-150 V J3 V 34.3 20
(S) o-Terphenyl 0.000 0.000 18.0-148 J7 J7
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
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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
(dry)Results are reported based on the dry weight of the sample. [this will only be present on a dry report basis for soils].
MDL Method Detection Limit.
MDL (dry)Method Detection Limit.
RDL Reported Detection Limit.
RDL (dry)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.
Original Sample The non-spiked sample in the prep batch used to determine the Relative Percent Difference (RPD) from a quality control
sample. The Original Sample may not be included within the reported SDG.
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.
J3 The associated batch QC was outside the established quality control range for precision.
J7 Surrogate recovery cannot be used for control limit evaluation due to dilution.
V The sample concentration is too high to evaluate accurate spike recoveries.
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
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Pace Analytical National 12065 Lebanon Rd Mount Juliet, TN 37122
Alabama 40660 Nebraska NE-OS-15-05
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Kentucky ¹ ⁶KY90010 South Carolina 84004002
Kentucky ²16 South Dakota n/a
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Louisiana LA018 Texas T104704245-20-18
Maine TN00003 Texas ⁵LAB0152
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A2LA – ISO 17025 ⁵1461.02 DOD 1461.01
Canada 1461.01 USDA P330-15-00234
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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
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
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