MO-3229_8126_CA_MRP_20230815

EXCEL CIVIL & ENVIRONMENTAL ASSOCIATES, PLLC
www.excelengr.com

Excel Civil & Environmental Associates, PLLC
625 Huntsman Court
Gastonia, North Carolina 28054
NC License No. P-0129
Telephone: [phone]
Facsimile: [phone]
Internet: www.excelengr.com

August 14, 2023

Mr. Daniel Bowser, P.G.
NCDEQ / DWM / UST Section
610 East Center Avenue
Mooresville, North Carolina 28115

Re: Groundwater Monitoring Report
Sam’s Mart No. 25
6201 North Tryon Street
Charlotte, North Carolina
Risk Classification: INTERMEDIATE
MO-3229_8126_CA_MRP_20230814_Monitoring Report
EXCEL Project No. 2014036

Dear Mr. Bowser:

Excel Civil & Environmental Associates, PLLC (Excel) on behalf of Sam’s Mart,
Incorporated (Sam’s Mart) is pleased to submit a copy of the Groundwater Monitoring
Report for your approval.

If you have any comments, please do not hesitate to contact me at 704.853.0800.

Sincerely yours,

EXCEL CIVIL & ENVIRONMENTAL ASSOCIATES, PLLC

Aaron C. Long, P.E.
Principal Engineer

p.c. Adnan Jazairi / Sam’s Mart, Inc. / Charlotte, NC
GROUNDWATER MONITORING REPORT
SAM’S MART NO. 25
6201 NORTH TRYON STREET
CHARLOTTE, MECKLENBURG COUNTY, NORTH CAROLINA
MO-3229_8126_CA_MRP_20230814_Monitoring Report
NCDEQ UST NO. 0-013875
EXCEL PROJECT NO. 2014036
LATITUDE = 35.271448° / LONGITUDE = (-) 80.767841°
DATE SUBMITTED:
August 14, 2023
PREPARED FOR:
Mr. Adnan Jazairi
Sam’s Mart, Inc.
7935 Council Place, Suite 200
Matthews, North Carolina 28105
PREPARED BY:
Excel Civil & Environmental Associates, PLLC
Post Office Box 6172
Gastonia, North Carolina 28056-6000
Phone [phone]
www.excelengr.com
Aaron C. Long, P.E.
Principal Engineer
Groundwater Monitoring Report
Sam’s Mart No. 25
Charlotte, North Carolina Excel No. 2014036

EXCEL CIVIL & ENVIRONMENTAL ASSOCIATES, PLLC
www.excelengr.com

PROJECT INFORMATION
Facility Name: Sam’s Mart No. 25 & (Former) Tenneco Oil Company
Facility Address: 6201 North Tryon Street
Charlotte, Mecklenburg County, North Carolina
NCDENR UST Number: 0-013875
NCDEQ Incident Manger: Daniel Bowser, MRO, UST Section
Site Risk / Priority Rank: Intermediate
Reason for Risk Classification: Groundwater constituents exceeding GCLs; no wells
reported in receptor area
Land Use Category: Commercial
CONTACT INFORMATION
Responsible Party: Sam’s Mart, Inc.
7935 Council Place, #200
Matthews, North Carolina 28105
Phone: [phone]
Current Property Owner: SAM'S INVESTMENTS III LLC
7935 Council Place, #200
Matthews, North Carolina 28105

Consultant: Excel Civil & Environmental Associates, PLLC
625 Huntsman Court
Gastonia, North Carolina 28054
License No. P-0129
Consultant Contact: Aaron C. Long, P.E.
Principal Engineer
Phone: [phone]
Email: [e-mail]
Analytical Laboratory: Pace National
12065 Lebanon Road
Mt. Juliet, TN 37122
Phone: [phone]
Certification No. ENV375/DW21704/BIO041
RELEASE INFORMATION
Date Discovered: May 1989
Estimated Quantity of Release: Unknown
Source of Release: Gasoline and diesel fuel Underground Storage Tanks
UST(s) Size & Contents: (2) 12,000-gal Gasoline, (1) 12,000-gal Diesel

Groundwater Monitoring Report
Sam’s Mart No. 25
Charlotte, North Carolina Excel No. 2014036

EXCEL CIVIL & ENVIRONMENTAL ASSOCIATES, PLLC
www.excelengr.com
1.0 SITE INFORMATION

1.1 Site Location

The Sam’s Mart Station SM-25 (SM25) is located at the intersection of North Tryon Street and
west Arrowhead Drive inside the city limits of Charlotte, Mecklenburg County, North Carolina
(Figure 1). Following demolition and UST removal in August of 2014, SM25 underwent
development in 2019 and is currently an active fueling station and convenience store.

Three underground storage tanks (USTs) were operated at the property beginning in 1978. The
USTs were closed by removal in August 2014, including: two 12,000-gallon gasoline USTs and
one 12,000-gallon diesel UST.

1.2 Previous Site Activities

Edgerton Environmental Services, Inc. (EESI) conducted a Phase I initial site assessment of the
North Tryon Street site in January and February 1990. The investigation involved the installation
and sampling of three groundwater monitor wells (MW-1, MW-2, and MW-3) and a series of soil
borings. The results of the Phase I investigation indicate both soil and groundwater contamination
present at the site.

Edgerton Environmental Services, Inc. performed a Phase II groundwater assessment in May of
1993 involving the installation of a seven additional shallow monitor wells and one deep monitor
well at the North Tryon Street site (former Tenneco Store No. 519-31). A site location map is
shown in Figure 1. Monitor well locations are shown in Figure 2.

In order to abate the petroleum hydrocarbon contamination in the soils, a vacuum extraction
system (VES) was installed at the site. The VES system was principally installed to remove the
petroleum hydrocarbons from the soil, it also has a secondary effect of mitigating volatile organic
contaminants in the groundwater. No free phase hydrocarbons were detected at the site. The
VES operated under a 90-day variance permit from the Mecklenburg County Department of
Environmental Management beginning in March 1991.

A NORR was issued on October 27, 2003, listing the site as an “Intermediate” risk. At that time,
Tenneco Oil Company was directed to proceed only with assessment, removal, and cleanup of
contaminated soil and free product with thickness of ¼ inch or greater.

To address the impacted soils issue, Sam’s Mart received PATA 11 approval in June 2014 for the
removal of impacted soils during UST removal activities. During UST removal activities
conducted in August of 2014, five areas were over-excavated in order to remove impacted soils.
A total of approximately 213-tons of soil were excavated, loaded and transported offsite for proper
disposal; the report was submitted to NCDEQ on January 8, 2015.

From July 2015 to May 2020, Regenesis ORCx biosocks were installed in monitor wells MW-2R
and MW-8 in order to reduce constituent levels below GCLs.

A Feasibility Study was completed by Excel in August 2021, to review remediation of this incident
by utilizing a substrate injection event for in-situ chemical oxidation to treat targeted contaminants.
Excel completed installation of 10 injection points in August 2022 in the vicinity of MW-8R. Each
Groundwater Monitoring Report
Sam’s Mart No. 25
Charlotte, North Carolina Excel No. 2014036

EXCEL CIVIL & ENVIRONMENTAL ASSOCIATES, PLLC
www.excelengr.com
injection point was installed approximately 8 feet on center with triangular spacing. The total depth
of each injection well was 19 feet with 10 feet of slotted well screen and 9 feet of well casing.
Refer to the attached Figure 4 for injection well locations.
A UIC permit was submitted to NCDEQ and approved on April 12, 2022. Excel contracted ARM
Environmental who mobilized to the site on February 20 through 24, 2023, to injected into the
previously installed injection wells (I-1 through I-10) in the vicinity of MW-8R in order to reduce
Constituents of Concern below GCLs. The injection wells were installed to a depth of 19 feet
below grade level utilizing Excel utilized Klozur SP and sodium hydroxide as the activation
material. A total of 7,714 pounds of Klozur SP and 14,000 pounds of sodium hydroxide were
injected during the event.

Based on previous reports and agency correspondence, it appears the site is classified as
“Intermediate” risk by the NCDEQ due to the levels of groundwater contamination exceeding
Gross Contamination Levels (GCLs). The goal of corrective action at the property is to reduce
constituent levels at the property to below the Gross Contamination Levels (GCLs).

2.0 SITE DESCRIPTION

2.1 Site Location

The Sam’s Mart Station SM-25 (SM25) is located at the intersection of North Tryon Street
and west Arrowhead Drive inside the city limits of Charlotte, Mecklenburg County, North
Carolina (Figure 1). Following demolition and UST removal in August of 2014, SM25
underwent development in 2019 and is currently an active fueling station and convenience
store.

Three underground storage tanks (USTs) were operated at the property beginning in
1978. The USTs were closed by removal in August 2014, including: two 12,000-gallon
gasoline USTs and one 12,000-gallon diesel UST.

2.2 REGIONAL GEOLOGY AND HYDROGEOLOGY

The North Tryon Street site lies in the Charlotte Belt geologic unit. According to the
Geologic Map of North Carolina (1985), the Charlotte belt consists of metamorphic rocks
and igneous intrusives.

According to the Soil Survey of Mecklenburg County, North Carolina, the soil at the site
are1 classified as being part of the Cecil urban land complex. This unit is classified by
nearly level to strongly sloping urban areas on well drained soils that have a predominantly
clayey subsoil, with permeabilities ranging from 0.6-2.0 in./hr.

2.3 SITE GEOLOGY AND HYDROGEOLOGY

Based on the well logs completed by Excel during the installation of monitoring wells MW-
2RR and MW-8R, the subsurface consists of red/brown sandy clay to a depth of 1 foot
below ground surface to 25-bgl during the installation of 2RR and 8R in April of 2020 at
the subject site.
Groundwater Monitoring Report
Sam’s Mart No. 25
Charlotte, North Carolina Excel No. 2014036
EXCEL CIVIL & ENVIRONMENTAL ASSOCIATES, PLLC
www.excelengr.com
Site surface drainage is to Sugar Creek to the west/southwest. Based on historical reports
groundwater flow is reported to the is to the southwest. The nearest possible downgradient
groundwater receptor is a small unnamed pond approximately 1,200 feet to the southwest.
2.4 WATER SUPPLY WELL INFORMATION
The subject property is served by a municipal water supply. Based on the information
obtained from a letter dated October 27, 2003, from DENR, the site is determined to be
an “Intermediate Risk”. Excel has not conducted an SSE at this time nor been provided
with this information.
In addition, any underground utilities such as storm sewer, sanitary sewer, water lines,
etc., are typically considered potential vapor collection points and conduits for
vapor/contamination travel.
Site surface drainage is to Sugar Creek to the west/southwest. Based on historical reports
groundwater flow is reported to the is to the southwest. The nearest possible downgradient
groundwater receptor is a small unnamed pond approximately 1,200 feet to the southwest.
2.0 FIELD ACTIVITIES
2.1 Groundwater Monitoring Event
On April 15, 2020, Excel personnel visited the site and installed two type-II monitoring wells
named MW-2RR & MW-8R as replacement monitor wells. Both wells were installed to a total
depth of 25 feet with 10 feet of well screen and 15 feet of well casing. Excel obtained groundwater
samples from monitoring wells MW-2RR and MW-8R on June 16, 2023.
During the sampling event, no free product was observed in any of the monitoring wells sampled.
It is Excel’s standard operating procedure not to gauge monitoring wells with an oil-water interface
probe prior to sampling if said well has not historically shown free product. During the sampling
event, static water levels were collected with an electric water level indicator. The depth of
water measured in MW-8R was measured to be twelve feet below grade surface at during the
June 2023 sampling event.
The results of the laboratory analysis indicated that the ground water quality sample collected
from monitoring well MW-8R was found to be below Gross Contamination Levels (GCLs) for all
constituents. The results of the laboratory analysis indicated that the ground water quality sample
collected from monitoring well MW-2RR was found to be above Gross Contamination Levels
(GCLs) for benzene and 1,2-Dibromoethane (EDB).
2.3 Groundwater Analytical Results
Hydrocarbon constituents reported in the June 2023 groundwater samples are summarized in
Table 1. Groundwater quality sample results collected from monitor wells MW-2RR indicated
benzene and 1,2 dibromomethane exceeding the gross contamination level (GCL) agency
Groundwater Monitoring Report
Sam’s Mart No. 25
Charlotte, North Carolina Excel No. 2014036

EXCEL CIVIL & ENVIRONMENTAL ASSOCIATES, PLLC
www.excelengr.com
standards. Based upon a review of the current analytical data in comparison to the analytical data
from previous groundwater sampling activities conducted, the February 2023 injection event has
successfully reduced the levels of constituents below GCLs in MW-8R.

A copy of the laboratory analytical report and associated chain of custody forms from the June
2023 groundwater sampling event is included in Appendix C.

3.0 CONCLUSIONS AND RECOMMENDATIONS

Recent groundwater sampling and analysis indicate that petroleum constituents were reported at
concentrations that exceed the GCL Standards. Specifically, benzene and EDB exceeded GCL
standards in MW-2RR. At this time, we recommend completing a direct push injection event
utilizing the remainder of the Klozur SP and sodium hydroxide materials in the vicinity of MW-2RR
and completing a groundwater sampling event to assess groundwater conditions.

EXCEL CIVIL & ENVIRONMENTAL ASSOCIATES, PLLC
www.excelengr.com

APPENDICES

APPENDIX A – FIGURES

APPENDIX B – GROUNDWATER SAMPLING EVENT DATA TABLES

APPENDIX C – LABORATORY ANALYSIS & CHAIN OF CUSTODY FORMS

EXCEL CIVIL & ENVIRONMENTAL ASSOCIATES, PLLC
www.excelengr.com

APPENDIX A - FIGURES

EXCEL CIVIL & ENVIRONMENTAL
ASSOCIATES, PLLC
625 HUNTSMAN COURT
GASTONIA, NC 28054
[phone]
FIGURE 1 - 1996
Topographical Map
Excel Project Number 2014036 
N
Source: U.S.G.S. 7.5 Minute Topographic Map
(www.usgs.gov)

EXCEL CIVIL & ENVIRONMENTAL ASSOCIATES, PLLC
www.excelengr.com

APPENDIX B – GROUNDWATER SAMPLING EVENT DATA TABLES

Groundwater Analytical Summary DataSam's Mart No. 256201 North Tryon StreetCharlotte, North CarolinaNCDEQ Incident No. 8126Excel Project No. 2014036SAMPLE IDDATE SAMPLED 23-Jul-15 22-Jun-17 23-Jul-15 22-Jun-17 14-Dec-17 29-Jun-18 15-Jan-19 7-May-20 1-Dec-20 4-May-21 16-Jun-23Benzene< 0.33 < 0.3319,800 7,040 11,000 14,100 4,480 12,60012,10016,2002331 5,0001,2-Dibromoethane (EDB)< 0.38 < 0.38231 < 38.1 74.8 J 151 < 38.1 63.1 J51.691.8< 3.150.02 501,2-Dichloroethane< 0.36 < 0.36568 < 36.1 518 545 < 36.1 < 16.4342476< 2.050.4 400Di-Isopropyl Ether< 0.32 < 0.3214948.3 J138 14068.7 J100 J98.915410.3 J70 70,000Ethylbenzene< 0.38 < 0.382,150 910 884 1,4104852,1202,0502,66020.8 J600 84,500Isopropylbenzene< 0.33 < 0.33 60.4 J < 32.6 34.6 J 36 J < 32.687.8 J105114< 2.6370 25,0002-Butanone (MEK)< 3.9 < 3.93 2,260 814 J 1,380 2,900 508 J5,0805,3207,3202,1904,000 4,000,0004-Methyl-2-pentanone (MIBK)< 2.1 < 2.14251 J < 214 < 214 < 214 < 214409 J482529216 J100 100,000MTBE< 0.37 < 0.3793.2 J 79.4 J 582 415 2241,2601,2502,36095.820 20,000Naphthalene< 1.0 < 1.0362 J 185 J 259 J 319 J 123 J445 J66088626.6 J6 6,000n-Propylbenzene< 0.35 < 0.35130< 34.977.9 J 81.8 J35.3 J2412642964.51 J70 30,000Tetrachloroethene22< 0.37< 37 < 37.2 < 37.2 < 37.2 < 37.2 < 60.0< 7.5< 7.5< 7.50.7 700Toluene< 0.78 < 0.4123,600 7,470 9,780 20,100 5,300 14,40012,20019,90075.7600 260,000Trichloroethene0.428 J < 0.40< 40 < 39.8 < 39.8 < 39.8 < 39.8 < 38.0< 4.75< 4.75< 4.753 3,0001,2,4-Trimethylbenzene< 0.37 < 0.371,150 580 739 776 4231,7601,9402,27022.3 J400 28,5001,3,5-Ttrimethylbenzene< 0.39 < 0.39 298 256 220 225 242445515588< 2.6400 25,000Xylenes (total)< 1.06 < 1.0611,100 5,840 4,830 7,330 2,8309,6609,62012,04099.6500 85,500NOTES Data in ug/L or ppb7-15 Sampling: MW-3 was located, insufficent volume to collect sample Bold data exceeds GWQ Standards7-17 Sampling: MW-2R also indicated 1,430 J Acetone, 20.7 J n-Butylbenzene, 24.6 J Chloroform, Highlighted data exceeds GCLs and 33.1 J p-Isopropyltoluene J - Estimated value between MDL & RDL6-18 Sampling: MW-8 also indicated 2,890 J AcetoneMTBE - Methyl Tert Butyl Ether1-19 Sampling: MW-2R also indicated 195 J tert-ButylbenzeneNC GWQSs - North Carolina Groundwater Quality Standards 5-20 Sampling is based upon new wells drilledGCLs - Gross Contamination Levels12-20 Sampling: MW-8R also indicated 2,900 Acetone, 30.6 n-Butylbenzene and 18.4 J sec-Butylbenzene5-21 Sampling: MW-8R also indicated 4,610 Acetone, 28.2 n-Butylbenzene, 18.3 J sec-Butylbenzene and 9.79 J p-Isopropyltoluene6-23 Sampling: MW-8R also indicated 3,640 Acetone, 301 Bromomethane, 10.8 J Chloroethane and 84.5 Chloromethane NC GWQS GCLsMW-4 MW-8 MW-8R
Groundwater Analytical Summary DataSam's Mart No. 256201 North Tryon StreetCharlotte, North CarolinaNCDEQ Incident No. 8126Excel Project No. 2014036SAMPLE IDDATE SAMPLED 13-Jul-17 14-Dec-17 29-Jun-1815-Jan-19 7-May-20 1-Dec-20 4-May-21 16-Jun-23Benzene 9,650 9,100 8,910 7,650 16,900 34.3 290 20,000 1 5,0001,2-Dibromoethane (EDB) 40.1 J 43.3 J < 95.2 < 95.2 67.2 0.22 J 5.7 < 126 0.02 501,2-Dichloroethane< 18 71.9 99.3 J < 90.2 < 40.9 0.417 J14.1< 81.90.4 400Di-Isopropyl Ether33.1 J 42.2 J< 80 < 80 77.7 J< 0.1054.73167 J70 70,000Ethylbenzene2,350 1,850 1,300 893 3,3107.5625.72,400600 84,500Isopropylbenzene93.552.5< 81.5 < 81.5 129 J0.282 J 0.706 J170 J70 25,0002-Butanone (MEK)734 < 1,960 1,120 J < 982 1,360 J6.17 J37.43,350 J4,000 4,000,0004-Methyl-2-pentanone (MIBK) 168 J 211 J < 535 < 535 < 2390.585 J8.25 J< 478100 100,000MTBE2,180 2,260 3,240 1,640 3,9107.052897,74020 20,000Naphthalene564 338 266 J 753 J 593 J7.5513.8< 1,0006 6,000n-Propylbenzene275 123 < 87.2 < 87.2 3830.376 J1.07220 J70 30,000Tetrachloroethene < 18.6 < 18.6 < 93 < 93 < 150< 0.3< 0.3< 3000.7 700Toluene24,200 28,400 20,300 18,600 35,50054.831221,600 600 260,000Trichloroethene< 19.9 < 19.9 < 99.5 < 99.5 < 95.0< 0.19< 0.19< 1903 3,0001,2,4-Trimethylbenzene 1,970 912 740 1,430 2,4305.1546.61,290400 28,5001,3,5-Ttrimethylbenzene 494220 187 J4316471.2715.3413 J400 25,000Xylenes (total)12,100 8,810 7,280 9,690 14,90045.6221.211,210 500 85,500NOTES Data in ug/L or ppb7-15 Sampling: MW-3 was located, insufficent volume to collect sample Bold data exceeds GWQ Standards7-17 Sampling: MW-2R also indicated 1,430 J Acetone, 20.7 J n-Butylbenzene, 24.6 J Chloroform, Highlighted data exceeds GCLs and 33.1 J p-Isopropyltoluene J - Estimated value between MDL & RDL6-18 Sampling: MW-8 also indicated 2,890 J AcetoneMTBE - Methyl Tert Butyl Ether1-19 Sampling: MW-2R also indicated 195 J tert-ButylbenzeneNC GWQSs - North Carolina Groundwater Quality Standards5-20 Sampling is based upon new wells drilledGCLs - Gross Contamination Levels12-20 Sampling: MW-8R also indicated 2,900 Acetone, 30.6 n-Butylbenzene and 18.4 J sec-Butylbenzene; MW-2RR also indicated 11.8 J Acetone5-21 Sampling: MW-2R also indicated 53.8 Acetone, 0.205 J sec-Butylbenzene, 58.0 Chloroform, 0.505 J Styrene, and 0.29 J p-IsopropyltolueneMW-2RNC GWQS GCLsMW-2RR
Electrical Dissolved
Conductivity Oxygen ORP
(µS/cm)(ppm)
MW-2RR 12.05 6.74 0.511 3.87 105 22.09
MW-8R 12.60 9.29 13.0 2.85 -26 21.25
Notes:SU Standard units
µS/cm Microsiemens per centimeter
ppm Parts per million
0C Degrees Celsius
NS Not sampled, (Dry, Not Located, Destroyed, etc…)
MW Monitoring Well
6/16/23
TABLE 2
FIELD MEASUREMENTS OF THE GROUNDWATER SAMPLES
Sam's Mart No. 25
Charlotte, North Carolina
Excel Project No. 2014036
Well
Identification
Sampling
Date
pH
(su)
Temperature
(0C)DTW (ft)

EXCEL CIVIL & ENVIRONMENTAL ASSOCIATES, PLLC
www.excelengr.com

APPENDIX C – LABORATORY ANALYSIS & CHAIN OF CUSTODY FORMS
ANALYTICAL REPORT
June 29, 2023
Excel Civil & Environmental Associates
Sample Delivery Group:L1627318
Samples Received:06/17/2023
Project Number:2014036
Description:Sam's Mart 25
Report To:Aaron Long
625 Huntsman Court
Gastonia, NC 28054
Entire Report Reviewed By:
June 29, 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
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June 29, 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
MW-2RR L1627318-01 5
MW-8R L1627318-02 7
Qc: Quality Control Summary 9
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 9
Gl: Glossary of Terms 17
Al: Accreditations & Locations 18
Sc: Sample Chain of Custody 19
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SAMPLE SUMMARY
Collected by Collected date/time Received date/time
MW-2RR L1627318-01 GW C. DeVane 06/16/23 13:20 06/17/23 09:10
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 WG2084177 1000 06/26/23 04:33 06/26/23 04:33 JBE Mt. Juliet, TN
Collected by Collected date/time Received date/time
MW-8R L1627318-02 GW C. DeVane 06/16/23 12:30 06/17/23 09:10
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 WG2086267 25 06/29/23 03:33 06/29/23 03:33 JBE Mt. Juliet, TN
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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
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Heather J Wagner
Project Manager
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
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SAMPLE RESULTS - 01
L1627318
MW-2RR
Collected date/time: 06/16/23 13:20
Volatile Organic Compounds (GC/MS) by Method 6200B-2011
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
Acetone U 11300 50000 1000 06/26/2023 04:33 WG2084177
Acrolein U 2540 50000 1000 06/26/2023 04:33 WG2084177
Acrylonitrile U 671 10000 1000 06/26/2023 04:33 WG2084177
Benzene 20000 94.1 1000 1000 06/26/2023 04:33 WG2084177
Bromobenzene U 118 1000 1000 06/26/2023 04:33 WG2084177
Bromodichloromethane U 136 1000 1000 06/26/2023 04:33 WG2084177
Bromoform U 129 1000 1000 06/26/2023 04:33 WG2084177
Bromomethane U 605 5000 1000 06/26/2023 04:33 WG2084177
n-Butylbenzene U 157 1000 1000 06/26/2023 04:33 WG2084177
sec-Butylbenzene U 125 1000 1000 06/26/2023 04:33 WG2084177
tert-Butylbenzene U 127 1000 1000 06/26/2023 04:33 WG2084177
Carbon tetrachloride U 128 1000 1000 06/26/2023 04:33 WG2084177
Chlorobenzene U 116 1000 1000 06/26/2023 04:33 WG2084177
Chlorodibromomethane U 140 1000 1000 06/26/2023 04:33 WG2084177
Chloroethane U 192 5000 1000 06/26/2023 04:33 WG2084177
Chloroform U 111 5000 1000 06/26/2023 04:33 WG2084177
Chloromethane U 960 2500 1000 06/26/2023 04:33 WG2084177
2-Chlorotoluene U 106 1000 1000 06/26/2023 04:33 WG2084177
4-Chlorotoluene U 114 1000 1000 06/26/2023 04:33 WG2084177
1,2-Dibromo-3-Chloropropane U 276 5000 1000 06/26/2023 04:33 WG2084177
1,2-Dibromoethane U 126 1000 1000 06/26/2023 04:33 WG2084177
Dibromomethane U 122 1000 1000 06/26/2023 04:33 WG2084177
1,2-Dichlorobenzene U 107 1000 1000 06/26/2023 04:33 WG2084177
1,3-Dichlorobenzene U 110 1000 1000 06/26/2023 04:33 WG2084177
1,4-Dichlorobenzene U 120 1000 1000 06/26/2023 04:33 WG2084177
Dichlorodifluoromethane U 374 5000 1000 06/26/2023 04:33 WG2084177
1,1-Dichloroethane U 100 1000 1000 06/26/2023 04:33 WG2084177
1,2-Dichloroethane U 81.9 1000 1000 06/26/2023 04:33 WG2084177
1,1-Dichloroethene U 188 1000 1000 06/26/2023 04:33 WG2084177
cis-1,2-Dichloroethene U 126 1000 1000 06/26/2023 04:33 WG2084177
trans-1,2-Dichloroethene U 149 1000 1000 06/26/2023 04:33 WG2084177
1,2-Dichloropropane U 149 1000 1000 06/26/2023 04:33 WG2084177
1,1-Dichloropropene U 142 1000 1000 06/26/2023 04:33 WG2084177
1,3-Dichloropropane U 110 1000 1000 06/26/2023 04:33 WG2084177
2,2-Dichloropropane U 161 1000 1000 06/26/2023 04:33 WG2084177
Di-isopropyl ether 167 J 105 1000 1000 06/26/2023 04:33 WG2084177
Ethylbenzene 2400 137 1000 1000 06/26/2023 04:33 WG2084177
Hexachloro-1,3-butadiene U 337 1000 1000 06/26/2023 04:33 WG2084177
Isopropylbenzene 170 J 105 1000 1000 06/26/2023 04:33 WG2084177
p-Isopropyltoluene U 120 1000 1000 06/26/2023 04:33 WG2084177
2-Butanone (MEK)3350 J 1190 10000 1000 06/26/2023 04:33 WG2084177
Methylene Chloride U 430 5000 1000 06/26/2023 04:33 WG2084177
4-Methyl-2-pentanone (MIBK)U 478 10000 1000 06/26/2023 04:33 WG2084177
Methyl tert-butyl ether 7740 101 1000 1000 06/26/2023 04:33 WG2084177
Naphthalene U 1000 5000 1000 06/26/2023 04:33 WG2084177
n-Propylbenzene 220 J 99.3 1000 1000 06/26/2023 04:33 WG2084177
Styrene U 118 1000 1000 06/26/2023 04:33 WG2084177
1,1,1,2-Tetrachloroethane U 147 1000 1000 06/26/2023 04:33 WG2084177
1,1,2,2-Tetrachloroethane U 133 1000 1000 06/26/2023 04:33 WG2084177
Tetrachloroethene U 300 1000 1000 06/26/2023 04:33 WG2084177
Toluene 21600 278 1000 1000 06/26/2023 04:33 WG2084177
1,2,3-Trichlorobenzene U 230 1000 1000 06/26/2023 04:33 WG2084177
1,2,4-Trichlorobenzene U 481 1000 1000 06/26/2023 04:33 WG2084177
1,1,1-Trichloroethane U 149 1000 1000 06/26/2023 04:33 WG2084177
1,1,2-Trichloroethane U 158 1000 1000 06/26/2023 04:33 WG2084177
Trichloroethene U 190 1000 1000 06/26/2023 04:33 WG2084177
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
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SAMPLE RESULTS - 01
L1627318
MW-2RR
Collected date/time: 06/16/23 13:20
Volatile Organic Compounds (GC/MS) by Method 6200B-2011
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
Trichlorofluoromethane U 160 5000 1000 06/26/2023 04:33 WG2084177
1,2,3-Trichloropropane U 237 2500 1000 06/26/2023 04:33 WG2084177
1,2,4-Trimethylbenzene 1290 322 1000 1000 06/26/2023 04:33 WG2084177
1,3,5-Trimethylbenzene 413 J 104 1000 1000 06/26/2023 04:33 WG2084177
Vinyl chloride U 234 1000 1000 06/26/2023 04:33 WG2084177
o-Xylene 3560 174 1000 1000 06/26/2023 04:33 WG2084177
m&p-Xylenes 7650 430 2000 1000 06/26/2023 04:33 WG2084177
(S) Toluene-d8 96.7 80.0-120 06/26/2023 04:33 WG2084177
(S) 4-Bromofluorobenzene 110 77.0-126 06/26/2023 04:33 WG2084177
(S) 1,2-Dichloroethane-d4 86.0 70.0-130 06/26/2023 04:33 WG2084177
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
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SAMPLE RESULTS - 02
L1627318
MW-8R
Collected date/time: 06/16/23 12:30
Volatile Organic Compounds (GC/MS) by Method 6200B-2011
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
Acetone 3640 282 1250 25 06/29/2023 03:33 WG2086267
Acrolein U 63.5 1250 25 06/29/2023 03:33 WG2086267
Acrylonitrile U 16.8 250 25 06/29/2023 03:33 WG2086267
Benzene 233 2.35 25.0 25 06/29/2023 03:33 WG2086267
Bromobenzene U 2.95 25.0 25 06/29/2023 03:33 WG2086267
Bromodichloromethane U 3.40 25.0 25 06/29/2023 03:33 WG2086267
Bromoform U 3.22 25.0 25 06/29/2023 03:33 WG2086267
Bromomethane 301 15.1 125 25 06/29/2023 03:33 WG2086267
n-Butylbenzene U 3.93 25.0 25 06/29/2023 03:33 WG2086267
sec-Butylbenzene U 3.13 25.0 25 06/29/2023 03:33 WG2086267
tert-Butylbenzene U 3.18 25.0 25 06/29/2023 03:33 WG2086267
Carbon tetrachloride U 3.20 25.0 25 06/29/2023 03:33 WG2086267
Chlorobenzene U 2.90 25.0 25 06/29/2023 03:33 WG2086267
Chlorodibromomethane U 3.50 25.0 25 06/29/2023 03:33 WG2086267
Chloroethane 10.8 J 4.80 125 25 06/29/2023 03:33 WG2086267
Chloroform U 2.78 125 25 06/29/2023 03:33 WG2086267
Chloromethane 84.5 24.0 62.5 25 06/29/2023 03:33 WG2086267
2-Chlorotoluene U 2.65 25.0 25 06/29/2023 03:33 WG2086267
4-Chlorotoluene U 2.85 25.0 25 06/29/2023 03:33 WG2086267
1,2-Dibromo-3-Chloropropane U 6.90 125 25 06/29/2023 03:33 WG2086267
1,2-Dibromoethane U 3.15 25.0 25 06/29/2023 03:33 WG2086267
Dibromomethane U 3.05 25.0 25 06/29/2023 03:33 WG2086267
1,2-Dichlorobenzene U 2.68 25.0 25 06/29/2023 03:33 WG2086267
1,3-Dichlorobenzene U 2.75 25.0 25 06/29/2023 03:33 WG2086267
1,4-Dichlorobenzene U 3.00 25.0 25 06/29/2023 03:33 WG2086267
Dichlorodifluoromethane U 9.35 125 25 06/29/2023 03:33 WG2086267
1,1-Dichloroethane U 2.50 25.0 25 06/29/2023 03:33 WG2086267
1,2-Dichloroethane U 2.05 25.0 25 06/29/2023 03:33 WG2086267
1,1-Dichloroethene U 4.70 25.0 25 06/29/2023 03:33 WG2086267
cis-1,2-Dichloroethene U 3.15 25.0 25 06/29/2023 03:33 WG2086267
trans-1,2-Dichloroethene U 3.73 25.0 25 06/29/2023 03:33 WG2086267
1,2-Dichloropropane U 3.73 25.0 25 06/29/2023 03:33 WG2086267
1,1-Dichloropropene U 3.55 25.0 25 06/29/2023 03:33 WG2086267
1,3-Dichloropropane U 2.75 25.0 25 06/29/2023 03:33 WG2086267
2,2-Dichloropropane U 4.03 25.0 25 06/29/2023 03:33 WG2086267
Di-isopropyl ether 10.3 J 2.63 25.0 25 06/29/2023 03:33 WG2086267
Ethylbenzene 20.8 J 3.43 25.0 25 06/29/2023 03:33 WG2086267
Hexachloro-1,3-butadiene U 8.43 25.0 25 06/29/2023 03:33 WG2086267
Isopropylbenzene U 2.63 25.0 25 06/29/2023 03:33 WG2086267
p-Isopropyltoluene U 3.00 25.0 25 06/29/2023 03:33 WG2086267
2-Butanone (MEK)2190 29.8 250 25 06/29/2023 03:33 WG2086267
Methylene Chloride U 10.7 125 25 06/29/2023 03:33 WG2086267
4-Methyl-2-pentanone (MIBK)216 J 12.0 250 25 06/29/2023 03:33 WG2086267
Methyl tert-butyl ether 95.8 2.53 25.0 25 06/29/2023 03:33 WG2086267
Naphthalene 26.6 J 25.0 125 25 06/29/2023 03:33 WG2086267
n-Propylbenzene 4.51 J 2.48 25.0 25 06/29/2023 03:33 WG2086267
Styrene U 2.95 25.0 25 06/29/2023 03:33 WG2086267
1,1,1,2-Tetrachloroethane U 3.68 25.0 25 06/29/2023 03:33 WG2086267
1,1,2,2-Tetrachloroethane U 3.33 25.0 25 06/29/2023 03:33 WG2086267
Tetrachloroethene U 7.50 25.0 25 06/29/2023 03:33 WG2086267
Toluene 75.7 6.95 25.0 25 06/29/2023 03:33 WG2086267
1,2,3-Trichlorobenzene U 5.75 25.0 25 06/29/2023 03:33 WG2086267
1,2,4-Trichlorobenzene U 12.0 25.0 25 06/29/2023 03:33 WG2086267
1,1,1-Trichloroethane U 3.73 25.0 25 06/29/2023 03:33 WG2086267
1,1,2-Trichloroethane U 3.95 25.0 25 06/29/2023 03:33 WG2086267
Trichloroethene U 4.75 25.0 25 06/29/2023 03:33 WG2086267
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
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SAMPLE RESULTS - 02
L1627318
MW-8R
Collected date/time: 06/16/23 12:30
Volatile Organic Compounds (GC/MS) by Method 6200B-2011
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
Trichlorofluoromethane U 4.00 125 25 06/29/2023 03:33 WG2086267
1,2,3-Trichloropropane U 5.93 62.5 25 06/29/2023 03:33 WG2086267
1,2,4-Trimethylbenzene 22.3 J 8.05 25.0 25 06/29/2023 03:33 WG2086267
1,3,5-Trimethylbenzene U 2.60 25.0 25 06/29/2023 03:33 WG2086267
Vinyl chloride U 5.85 25.0 25 06/29/2023 03:33 WG2086267
o-Xylene 32.2 4.35 25.0 25 06/29/2023 03:33 WG2086267
m&p-Xylenes 67.4 10.7 50.0 25 06/29/2023 03:33 WG2086267
(S) Toluene-d8 109 80.0-120 06/29/2023 03:33 WG2086267
(S) 4-Bromofluorobenzene 111 77.0-126 06/29/2023 03:33 WG2086267
(S) 1,2-Dichloroethane-d4 104 70.0-130 06/29/2023 03:33 WG2086267
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
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QUALITY CONTROL SUMMARYWG2084177
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 L1627318-01
Method Blank (MB)
(MB) R3942544-2 06/25/23 20:31
MB Result MB Qualifier MB MDL MB RDL
Analyte ug/l ug/l ug/l
Acetone U 11.3 50.0
Acrolein U 2.54 50.0
Acrylonitrile U 0.671 10.0
Benzene U 0.0941 1.00
Bromobenzene U 0.118 1.00
Bromodichloromethane U 0.136 1.00
Bromoform U 0.129 1.00
Bromomethane U 0.605 5.00
n-Butylbenzene U 0.157 1.00
sec-Butylbenzene U 0.125 1.00
tert-Butylbenzene U 0.127 1.00
Carbon tetrachloride U 0.128 1.00
Chlorobenzene U 0.116 1.00
Chlorodibromomethane U 0.140 1.00
Chloroethane U 0.192 5.00
Chloroform U 0.111 5.00
Chloromethane U 0.960 2.50
2-Chlorotoluene U 0.106 1.00
4-Chlorotoluene U 0.114 1.00
1,2-Dibromo-3-Chloropropane U 0.276 5.00
1,2-Dibromoethane U 0.126 1.00
Dibromomethane U 0.122 1.00
1,2-Dichlorobenzene U 0.107 1.00
1,3-Dichlorobenzene U 0.110 1.00
1,4-Dichlorobenzene U 0.120 1.00
Dichlorodifluoromethane U 0.374 5.00
1,1-Dichloroethane U 0.100 1.00
1,2-Dichloroethane U 0.0819 1.00
1,1-Dichloroethene U 0.188 1.00
cis-1,2-Dichloroethene U 0.126 1.00
trans-1,2-Dichloroethene U 0.149 1.00
1,2-Dichloropropane U 0.149 1.00
1,1-Dichloropropene U 0.142 1.00
1,3-Dichloropropane U 0.110 1.00
2,2-Dichloropropane U 0.161 1.00
Di-isopropyl ether U 0.105 1.00
Ethylbenzene U 0.137 1.00
Hexachloro-1,3-butadiene U 0.337 1.00
Isopropylbenzene U 0.105 1.00
p-Isopropyltoluene U 0.120 1.00
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
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QUALITY CONTROL SUMMARYWG2084177
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 L1627318-01
Method Blank (MB)
(MB) R3942544-2 06/25/23 20:31
MB Result MB Qualifier MB MDL MB RDL
Analyte ug/l ug/l ug/l
2-Butanone (MEK)U 1.19 10.0
Methylene Chloride U 0.430 5.00
4-Methyl-2-pentanone (MIBK)U 0.478 10.0
Methyl tert-butyl ether U 0.101 1.00
Naphthalene U 1.00 5.00
n-Propylbenzene U 0.0993 1.00
Styrene U 0.118 1.00
1,1,1,2-Tetrachloroethane U 0.147 1.00
1,1,2,2-Tetrachloroethane U 0.133 1.00
Tetrachloroethene U 0.300 1.00
Toluene U 0.278 1.00
1,2,3-Trichlorobenzene U 0.230 1.00
1,2,4-Trichlorobenzene U 0.481 1.00
1,1,1-Trichloroethane U 0.149 1.00
1,1,2-Trichloroethane U 0.158 1.00
Trichloroethene U 0.190 1.00
Trichlorofluoromethane U 0.160 5.00
1,2,3-Trichloropropane U 0.237 2.50
1,2,4-Trimethylbenzene U 0.322 1.00
1,3,5-Trimethylbenzene U 0.104 1.00
Vinyl chloride U 0.234 1.00
o-Xylene U 0.174 1.00
m&p-Xylenes U 0.430 2.00
(S) Toluene-d8 98.9 80.0-120
(S) 4-Bromofluorobenzene 101 77.0-126
(S) 1,2-Dichloroethane-d4 94.2 70.0-130
Laboratory Control Sample (LCS)
(LCS) R3942544-1 06/25/23 19:33
Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier
Analyte ug/l ug/l %%
Acetone 25.0 23.2 92.8 19.0-160
Acrolein 25.0 25.7 103 10.0-160
Acrylonitrile 25.0 33.0 132 55.0-149
Benzene 5.00 5.09 102 70.0-123
Bromobenzene 5.00 5.26 105 73.0-121
Bromodichloromethane 5.00 4.94 98.8 75.0-120
Bromoform 5.00 5.75 115 68.0-132
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
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QUALITY CONTROL SUMMARYWG2084177
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 L1627318-01
Laboratory Control Sample (LCS)
(LCS) R3942544-1 06/25/23 19:33
Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier
Analyte ug/l ug/l %%
Bromomethane 5.00 3.18 63.6 10.0-160
n-Butylbenzene 5.00 5.02 100 73.0-125
sec-Butylbenzene 5.00 4.48 89.6 75.0-125
tert-Butylbenzene 5.00 4.47 89.4 76.0-124
Carbon tetrachloride 5.00 5.61 112 68.0-126
Chlorobenzene 5.00 5.73 115 80.0-121
Chlorodibromomethane 5.00 5.74 115 77.0-125
Chloroethane 5.00 4.06 81.2 47.0-150
Chloroform 5.00 4.91 98.2 73.0-120
Chloromethane 5.00 6.65 133 41.0-142
2-Chlorotoluene 5.00 5.26 105 76.0-123
4-Chlorotoluene 5.00 5.43 109 75.0-122
1,2-Dibromo-3-Chloropropane 5.00 4.84 96.8 58.0-134
1,2-Dibromoethane 5.00 5.57 111 80.0-122
Dibromomethane 5.00 5.10 102 80.0-120
1,2-Dichlorobenzene 5.00 5.86 117 79.0-121
1,3-Dichlorobenzene 5.00 5.48 110 79.0-120
1,4-Dichlorobenzene 5.00 5.53 111 79.0-120
Dichlorodifluoromethane 5.00 5.40 108 51.0-149
1,1-Dichloroethane 5.00 6.08 122 70.0-126
1,2-Dichloroethane 5.00 4.79 95.8 70.0-128
1,1-Dichloroethene 5.00 6.19 124 71.0-124
cis-1,2-Dichloroethene 5.00 5.58 112 73.0-120
trans-1,2-Dichloroethene 5.00 5.53 111 73.0-120
1,2-Dichloropropane 5.00 5.87 117 77.0-125
1,1-Dichloropropene 5.00 5.40 108 74.0-126
1,3-Dichloropropane 5.00 5.52 110 80.0-120
2,2-Dichloropropane 5.00 4.41 88.2 58.0-130
Di-isopropyl ether 5.00 6.34 127 58.0-138
Ethylbenzene 5.00 5.50 110 79.0-123
Hexachloro-1,3-butadiene 5.00 5.41 108 54.0-138
Isopropylbenzene 5.00 4.87 97.4 76.0-127
p-Isopropyltoluene 5.00 4.41 88.2 76.0-125
2-Butanone (MEK)25.0 29.0 116 44.0-160
Methylene Chloride 5.00 5.44 109 67.0-120
4-Methyl-2-pentanone (MIBK)25.0 30.2 121 68.0-142
Methyl tert-butyl ether 5.00 5.37 107 68.0-125
Naphthalene 5.00 4.02 80.4 54.0-135
n-Propylbenzene 5.00 5.04 101 77.0-124
Styrene 5.00 5.15 103 73.0-130
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
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QUALITY CONTROL SUMMARYWG2084177
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 L1627318-01
Laboratory Control Sample (LCS)
(LCS) R3942544-1 06/25/23 19:33
Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier
Analyte ug/l ug/l %%
1,1,1,2-Tetrachloroethane 5.00 6.03 121 75.0-125
1,1,2,2-Tetrachloroethane 5.00 5.15 103 65.0-130
Tetrachloroethene 5.00 5.50 110 72.0-132
Toluene 5.00 5.23 105 79.0-120
1,2,3-Trichlorobenzene 5.00 4.65 93.0 50.0-138
1,2,4-Trichlorobenzene 5.00 4.96 99.2 57.0-137
1,1,1-Trichloroethane 5.00 5.33 107 73.0-124
1,1,2-Trichloroethane 5.00 5.72 114 80.0-120
Trichloroethene 5.00 4.86 97.2 78.0-124
Trichlorofluoromethane 5.00 4.45 89.0 59.0-147
1,2,3-Trichloropropane 5.00 4.75 95.0 73.0-130
1,2,4-Trimethylbenzene 5.00 4.52 90.4 76.0-121
1,3,5-Trimethylbenzene 5.00 5.02 100 76.0-122
Vinyl chloride 5.00 4.41 88.2 67.0-131
o-Xylene 5.00 5.04 101 80.0-122
m&p-Xylenes 10.0 11.7 117 80.0-122
(S) Toluene-d8 97.4 80.0-120
(S) 4-Bromofluorobenzene 105 77.0-126
(S) 1,2-Dichloroethane-d4 90.6 70.0-130
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
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QUALITY CONTROL SUMMARYWG2086267
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 L1627318-02
Method Blank (MB)
(MB) R3942853-2 06/28/23 22:36
MB Result MB Qualifier MB MDL MB RDL
Analyte ug/l ug/l ug/l
Acetone U 11.3 50.0
Acrolein U 2.54 50.0
Acrylonitrile U 0.671 10.0
Benzene U 0.0941 1.00
Bromobenzene U 0.118 1.00
Bromodichloromethane U 0.136 1.00
Bromoform U 0.129 1.00
Bromomethane U 0.605 5.00
n-Butylbenzene U 0.157 1.00
sec-Butylbenzene U 0.125 1.00
tert-Butylbenzene U 0.127 1.00
Carbon tetrachloride U 0.128 1.00
Chlorobenzene U 0.116 1.00
Chlorodibromomethane U 0.140 1.00
Chloroethane U 0.192 5.00
Chloroform U 0.111 5.00
Chloromethane U 0.960 2.50
2-Chlorotoluene U 0.106 1.00
4-Chlorotoluene U 0.114 1.00
1,2-Dibromo-3-Chloropropane U 0.276 5.00
1,2-Dibromoethane U 0.126 1.00
Dibromomethane U 0.122 1.00
1,2-Dichlorobenzene U 0.107 1.00
1,3-Dichlorobenzene U 0.110 1.00
1,4-Dichlorobenzene U 0.120 1.00
Dichlorodifluoromethane U 0.374 5.00
1,1-Dichloroethane U 0.100 1.00
1,2-Dichloroethane U 0.0819 1.00
1,1-Dichloroethene U 0.188 1.00
cis-1,2-Dichloroethene U 0.126 1.00
trans-1,2-Dichloroethene U 0.149 1.00
1,2-Dichloropropane U 0.149 1.00
1,1-Dichloropropene U 0.142 1.00
1,3-Dichloropropane U 0.110 1.00
2,2-Dichloropropane U 0.161 1.00
Di-isopropyl ether U 0.105 1.00
Ethylbenzene U 0.137 1.00
Hexachloro-1,3-butadiene U 0.337 1.00
Isopropylbenzene U 0.105 1.00
p-Isopropyltoluene U 0.120 1.00
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
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QUALITY CONTROL SUMMARYWG2086267
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 L1627318-02
Method Blank (MB)
(MB) R3942853-2 06/28/23 22:36
MB Result MB Qualifier MB MDL MB RDL
Analyte ug/l ug/l ug/l
2-Butanone (MEK)U 1.19 10.0
Methylene Chloride U 0.430 5.00
4-Methyl-2-pentanone (MIBK)U 0.478 10.0
Methyl tert-butyl ether U 0.101 1.00
Naphthalene U 1.00 5.00
n-Propylbenzene U 0.0993 1.00
Styrene U 0.118 1.00
1,1,1,2-Tetrachloroethane U 0.147 1.00
1,1,2,2-Tetrachloroethane U 0.133 1.00
Tetrachloroethene U 0.300 1.00
Toluene U 0.278 1.00
1,2,3-Trichlorobenzene U 0.230 1.00
1,2,4-Trichlorobenzene U 0.481 1.00
1,1,1-Trichloroethane U 0.149 1.00
1,1,2-Trichloroethane U 0.158 1.00
Trichloroethene U 0.190 1.00
Trichlorofluoromethane U 0.160 5.00
1,2,3-Trichloropropane U 0.237 2.50
1,2,4-Trimethylbenzene U 0.322 1.00
1,3,5-Trimethylbenzene U 0.104 1.00
Vinyl chloride U 0.234 1.00
o-Xylene U 0.174 1.00
m&p-Xylenes U 0.430 2.00
(S) Toluene-d8 114 80.0-120
(S) 4-Bromofluorobenzene 115 77.0-126
(S) 1,2-Dichloroethane-d4 105 70.0-130
Laboratory Control Sample (LCS)
(LCS) R3942853-1 06/28/23 21:53
Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier
Analyte ug/l ug/l %%
Acetone 25.0 22.7 90.8 19.0-160
Acrolein 25.0 18.7 74.8 10.0-160
Acrylonitrile 25.0 19.9 79.6 55.0-149
Benzene 5.00 4.42 88.4 70.0-123
Bromobenzene 5.00 4.05 81.0 73.0-121
Bromodichloromethane 5.00 4.54 90.8 75.0-120
Bromoform 5.00 4.60 92.0 68.0-132
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
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QUALITY CONTROL SUMMARYWG2086267
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 L1627318-02
Laboratory Control Sample (LCS)
(LCS) R3942853-1 06/28/23 21:53
Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier
Analyte ug/l ug/l %%
Bromomethane 5.00 4.85 97.0 10.0-160
n-Butylbenzene 5.00 4.04 80.8 73.0-125
sec-Butylbenzene 5.00 4.30 86.0 75.0-125
tert-Butylbenzene 5.00 4.27 85.4 76.0-124
Carbon tetrachloride 5.00 4.67 93.4 68.0-126
Chlorobenzene 5.00 4.57 91.4 80.0-121
Chlorodibromomethane 5.00 4.46 89.2 77.0-125
Chloroethane 5.00 5.53 111 47.0-150
Chloroform 5.00 4.55 91.0 73.0-120
Chloromethane 5.00 3.94 78.8 41.0-142
2-Chlorotoluene 5.00 4.30 86.0 76.0-123
4-Chlorotoluene 5.00 4.17 83.4 75.0-122
1,2-Dibromo-3-Chloropropane 5.00 4.14 82.8 58.0-134
1,2-Dibromoethane 5.00 4.60 92.0 80.0-122
Dibromomethane 5.00 4.50 90.0 80.0-120
1,2-Dichlorobenzene 5.00 4.47 89.4 79.0-121
1,3-Dichlorobenzene 5.00 4.57 91.4 79.0-120
1,4-Dichlorobenzene 5.00 4.37 87.4 79.0-120
Dichlorodifluoromethane 5.00 4.82 96.4 51.0-149
1,1-Dichloroethane 5.00 4.37 87.4 70.0-126
1,2-Dichloroethane 5.00 4.42 88.4 70.0-128
1,1-Dichloroethene 5.00 4.75 95.0 71.0-124
cis-1,2-Dichloroethene 5.00 4.66 93.2 73.0-120
trans-1,2-Dichloroethene 5.00 4.32 86.4 73.0-120
1,2-Dichloropropane 5.00 4.37 87.4 77.0-125
1,1-Dichloropropene 5.00 4.45 89.0 74.0-126
1,3-Dichloropropane 5.00 4.34 86.8 80.0-120
2,2-Dichloropropane 5.00 4.03 80.6 58.0-130
Di-isopropyl ether 5.00 3.84 76.8 58.0-138
Ethylbenzene 5.00 4.79 95.8 79.0-123
Hexachloro-1,3-butadiene 5.00 4.85 97.0 54.0-138
Isopropylbenzene 5.00 4.51 90.2 76.0-127
p-Isopropyltoluene 5.00 4.35 87.0 76.0-125
2-Butanone (MEK)25.0 21.4 85.6 44.0-160
Methylene Chloride 5.00 4.46 89.2 67.0-120
4-Methyl-2-pentanone (MIBK)25.0 21.4 85.6 68.0-142
Methyl tert-butyl ether 5.00 4.41 88.2 68.0-125
Naphthalene 5.00 4.36 87.2 54.0-135
n-Propylbenzene 5.00 4.07 81.4 77.0-124
Styrene 5.00 4.48 89.6 73.0-130
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
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QUALITY CONTROL SUMMARYWG2086267
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 L1627318-02
Laboratory Control Sample (LCS)
(LCS) R3942853-1 06/28/23 21:53
Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier
Analyte ug/l ug/l %%
1,1,1,2-Tetrachloroethane 5.00 4.68 93.6 75.0-125
1,1,2,2-Tetrachloroethane 5.00 3.87 77.4 65.0-130
Tetrachloroethene 5.00 4.93 98.6 72.0-132
Toluene 5.00 4.43 88.6 79.0-120
1,2,3-Trichlorobenzene 5.00 4.75 95.0 50.0-138
1,2,4-Trichlorobenzene 5.00 4.73 94.6 57.0-137
1,1,1-Trichloroethane 5.00 4.59 91.8 73.0-124
1,1,2-Trichloroethane 5.00 4.22 84.4 80.0-120
Trichloroethene 5.00 5.07 101 78.0-124
Trichlorofluoromethane 5.00 5.71 114 59.0-147
1,2,3-Trichloropropane 5.00 4.47 89.4 73.0-130
1,2,4-Trimethylbenzene 5.00 4.23 84.6 76.0-121
1,3,5-Trimethylbenzene 5.00 4.28 85.6 76.0-122
Vinyl chloride 5.00 5.00 100 67.0-131
o-Xylene 5.00 4.62 92.4 80.0-122
m&p-Xylenes 10.0 8.92 89.2 80.0-122
(S) Toluene-d8 111 80.0-120
(S) 4-Bromofluorobenzene 113 77.0-126
(S) 1,2-Dichloroethane-d4 107 70.0-130
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
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
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
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
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
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