WS-2804_6769_CA_MRP_20210428

Terracon Consultants, Inc. 2401 Brentwood Road, Suite 107 Raleigh, NC 27604
P [919] 873 2211 F [919] 873 9555 terracon.com
April 28, 2021
Ms. Linda Blalock
North Carolina Department of Environmental Quality
Division of Waste Management
1646 Mail Service Center
Raleigh, North Carolina 27699-1646
Email:[e-mail]
Re: Annual Monitoring Report
Former Erect Grocery
7816 Erect Road
Seagrove, Randolph County, North Carolina
UST Incident Number: 6769
Terracon Project No. 70207596
Dear Ms. Blalock:
Terracon Consultants, Inc. is pleased to submit this Annual Monitoring Report for the above-
referenced property. This report has been prepared in general accordance with North Carolina
Department of Environmental Quality, Underground Storage Tank (UST) Section Assessment
Guidelines and Corrective Action Guidelines for Petroleum and Hazardous Substance UST Releases
/ Petroleum Non-UST Releases,dated January 19, 2021, and Task Authorization No. 01 approved
on January 28, 2021.
If you have any questions regarding this report or the assessment activities, please contact us at
919-873-2211.
Sincerely,
Terracon Consultants, Inc.
Ethan C. Dinwiddie, GIT Donald R. Malone, PE, RSM
Field Geologist Senior Environmental Engineer
Justin F. Fabriziani, RSM
Environmental Department Manager
Enclosures
ANNUAL MONITORING REPORT
Former Erect Grocery (Incident #6769)
7816 Erect Road
Seagrove, Randolph County, North Carolina
April 28, 2021
Terracon Project No. 70207596
Prepared for:
North Carolina Department of Environmental Quality
Division of Waste Management
Raleigh, North Carolina
Prepared by:
Terracon Consultants, Inc.
Raleigh, North Carolina
Responsive ■Resourceful ■Reliable i
Table of Contents
A.SITE INFORMATION................................................................................................ 1
B.EXECUTIVE SUMMARY .......................................................................................... 2
C.SITE HISTORY AND CHARACTERIZATION .......................................................... 3
C.1 Site Setting ............................................................................................................................................ 4
C.2 Release Summary................................................................................................................................. 4
C.3 Previous Investigations ....................................................................................................................... 4
C.4 Water Supply Wells .............................................................................................................................. 5
D.ASSESSMENT INFORMATION ............................................................................ 6
D.1 Free Product Evaluation ...................................................................................................................... 6
D.2 Groundwater Sampling Activities ...................................................................................................... 6
D.3 Groundwater Analytical Results ........................................................................................................ 7
E.CONCLUSIONS AND RECOMMENDATIONS ..................................................... 7
REFERENCES ................................................................................................................ 8
EXHIBITS
Exhibit 1: Site Location Map
Exhibit 2: Site Plan
Exhibit 3: Water Supply Well Location Map
Exhibit 4: Groundwater Elevation Map (March 2021)
Exhibit 5: Groundwater Analytical Results (March 2021)
Exhibit 6: Benzene Isoconcentration Map (March 2021)
Exhibit 7: 1,2-Dichloroethane Isoconcentration Map (March 2021)
Exhibit 8: Diisopropyl Ether Isoconcentration Map (March 2021)
Exhibit 9: MTBE Isoconcentration Map (March 2021)
Exhibit 10: Naphthalene Isoconcentration Map (March 2021)
TABLES
Table 1: Conceptual Site Model
Table 2: Water Supply Well Information
Table 3: Monitoring Well Construction Information and Historical Groundwater Elevations
Table 4: Summary of Groundwater Analytical Results
APPENDIX
Appendix A: Photographs and Field Notes
Appendix B: Laboratory Analytical Results and Chain-of-Custody Forms
Erect Grocery
Seagrove, North Carolina
Terracon Project No. 70207596
Incident No. 6769
April 28, 2021
Responsive ■Resourceful ■Reliable 1
ANNUAL MONITORING REPORT
A. SITE INFORMATION
Date of Report:April 28, 2021
UST Number:RA-2804
NCDEQ Incident No:6769
Facility ID:00-0-0000030709
Site Name:Former Erect Grocery
Site Location:7816 Erect Road, Seagrove, North Carolina
Latitude/Longitude:N 35.559046
W 79.659466
UST Owner/Operator:N/A
Current Property Owner: Charles and Harold Teague
7711 Erect Road
Seagrove, North Carolina 27341
[phone]
Current Property
Occupant: Teague Store
Consultant:Terracon Consultants, Inc. (Contact: Justin L. Fabriziani)
2401 Brentwood Road, Suite 107
Raleigh, North Carolina 27604
919-873-2211
Laboratory(s):Pace Analytical Services, LLC. (NCDEQ No. 329)
106 Vantage Point Drive
West Columbia, South Carolina 29712
803-227-2704
Release Information:Release Discovery Date: June 1990
Estimated Quantity: Unknown
Cause of Release: Underground/Aboveground Storage Tank Systems
Currently Active Tanks: Four above ground storage tanks (ASTs)
Erect Grocery
Seagrove, North Carolina
Terracon Project No. 70207596
Incident No. 6769
April 28, 2021
Responsive ■Resourceful ■Reliable 2
I, Donald R. Malone, a Licensed Engineer for Terracon Consultants, Inc. (Terracon), do certify that
the information contained in this report is correct and accurate to the best of my knowledge.
Donald R. Malone
NC License No. 20195
Terracon is licensed to practice geology and engineering in North Carolina. The certification numbers
of the corporation are C-367 and F-0869, respectively.
B. EXECUTIVE SUMMARY
The Former Erect Grocery site has operated as a gas station from at least the 1990s to the present.
A release from two former 2,000-gallon gasoline underground storage tanks (USTs) located on the
site was initially discovered in May 1990, when laboratory analysis revealed petroleum contaminants
in soil surrounding the UST basin. The USTs were subsequently removed in November 1990 and
closure soil samples indicated concentrations of total petroleum hydrocarbons (TPH) above NCDEQ
Action Levels. Subsequent site investigations have included soil borings, monitoring well installation,
and two Mobile Multi-Phase Extraction (MMPE) events. The site currently operates as a gas station
known as the Teague Store.
At the direction of North Carolina Department of Environmental Quality (NCDEQ), Terracon mobilized
to the site on March 19, 2021 to sample groundwater from four on-site monitoring wells (MW-1
through MW-3 and RW-1) and two water supply wells (WSW-1 and WSW-2) for volatile organic
compounds (VOCs). WSW-1 could not be sampled due to lack of permission to access the property.
Groundwater depths in the monitoring wells ranged from 14.75 to 17.24 feet below top of casing
(bTOC) and groundwater is estimated to flow southwest. Measurable thicknesses of free product
were not observed in the monitoring wells.
Based on information obtained during the completion of the groundwater monitoring activities,
Terracon provides the following conclusions and findings:
n Benzene, 1,2-dichloroethane (1,2-DCA), ethylbenzene, diisopropyl ether (IPE), methyl tert-
butyl ether (MTBE), naphthalene, n-propylbenzene, 1,2,4 trimethylbenzene, toluene, and total
xylenes were detected in monitoring wells MW-1, MW-2, MW-3, and/or RW-1 at
concentrations exceeding the North Carolina Administrative Code 2L Groundwater Quality
Standards (2L standards).
Erect Grocery
Seagrove, North Carolina
Terracon Project No. 70207596
Incident No. 6769
April 28, 2021
Responsive ■Resourceful ■Reliable 3
n MTBE was detected above the laboratory reporting limits in water supply well WSW-2, but
below the 2L standard.
n Exceedances of the North Carolina Gross Contamination Levels (GCLs) were not identified in
the monitoring wells. However, benzene was detected in RW-1 in April 2019 and 1,2-DCA
detected in MW-3 in April 2019 at concentrations that exceeded the GCLs.
n Measurable thicknesses of free product were not observed in the monitoring wells. Free
product thicknesses have historically been observed in MW-1 and MW-2.
n The contaminant plume has not been delineated to the south and east of the source area
and likely extends off-site in those directions. The contaminant plume is not delineated
vertically, and vertical delineation may be necessary due to nearby water supply wells.
n Three active water supply wells were identified within 1,000 feet of the source area. One of
these wells, WSW-1, is situated within 500 feet of the source area. WSW-1 (hydraulically
upgradient) and WSW-2 (hydraulically upgradient) are the closest water supply wells to the
source area and are situated approximately 275 feet northwest and 650 feet northeast of the
source area, respectively. The site is served by WSW-1, which has been sampled
periodically since at least July 2005 and has not contained detectable concentrations of
petroleum constituents. Municipal water is reportedly not available to the site and
surrounding properties.
n Based on the Interstate Technology and Regulatory Council Petroleum Vapor Intrusion (ITRC
PVI) Guidance regarding the presence of precluding factors such as the 1,2-DCA identified
on site, additional evaluation of the PVI pathway may be warranted. To further evaluate the
PVI pathway, Terracon compared groundwater concentrations to their respective Division of
Waste Management (DWM) Vapor Intrusion Screening Levels (VISLs). The observed
groundwater concentrations exceed their respective VISLs; therefore, an additional PVI
pathway evaluation may be warranted.
C. SITE HISTORY AND CHARACTERIZATION
The purpose of this report is to evaluate the current groundwater quality at the site and in nearby
water supply wells as well as to evaluate petroleum vapor intrusion risk at the site. Terracon
completed this report to summarize the findings of assessment activities performed in March 2021 at
the Former Erect Grocery site located at 7816 Erect Road in Seagrove, Randolph County, North
Carolina (Exhibit 2). This Annual Monitoring Report was prepared for the site in response to a
request by Ms. Linda Blalock, Engineer with the NCDEQ Division of Waste Management, State Lead
Program.
The Annual Monitoring Report was prepared in general accordance with the 15A North Carolina
Administrative Code 2L.0115 regulations and the NCDEQ UST Section Assessment Guidelines and
Corrective Action Guidelines for Petroleum and Hazardous Substance UST Releases / Petroleum
Non-UST Releases, dated January 19, 2021, under the supervision of Mr. Donald R. Malone, a North
Carolina registered licensed engineer (North Carolina License No. 20195).
Erect Grocery
Seagrove, North Carolina
Terracon Project No. 70207596
Incident No. 6769
April 28, 2021
Responsive ■Resourceful ■Reliable 4
C.1 Site Setting
The Former Erect Grocery site is comprised of 0.92 acres. The site contains a single-story
commercial building that operates as a gas station known as Teague Store. The remainder of the
site consists of three dispenser islands supplied by four on-site above ground storage tanks (located
on the western portion of the site), and paved, gravel and grassy areas.
The surrounding properties primarily consist of agricultural fields with residences to the east. The
Coleridge Volunteer Fire Department (Station No. 10) is located to the north. The site and
surrounding properties are depicted on Exhibit 1 and Exhibit 2.
C.2 Release Summary
The release at the site was discovered in May 1990, when laboratory analysis of soil samples
collected prior to UST excavations revealed a TPH concentration of 5,050 ppm. Two 2,000-gallon
gasoline USTs responsible for the release were removed in November 1990. A composite soil
sample collected from each corner of the excavation at a depth of 9 feet below land surface (bls)
indicated a concentration of 410 ppm of TPH remaining in the surrounding soil. The following table
summarizes the reported operation and abandonment of the USTs and ASTs:
ID Type Contents Volume (gallons)Installed Abandoned Method
1 UST Gasoline 2,000 Unknown 1990 Removal
2 UST Gasoline 2,000 Unknown 1990 Removal
C.3 Previous Investigations
In June and July 2005, Pyramid Environmental & Engineering, P.C. completed a Phase I Limited Site
Assessment at the site to assess soil and groundwater conditions as well as sample supply wells
within 500 feet of the source area. During this time, MW-1 was installed in the immediate vicinity of
the two former 2,000-gallon gasoline USTs. Samples collected from MW-1 indicated several
petroleum constituents were present above their respective 2L standards. Nearby water supply wells
did not indicate contamination exceeding laboratory reporting limits (Pyramid, 2005).
In January 2018, Terracon installed two groundwater monitoring wells (MW-2 and MW-3) along the
western and southern sides of the dispenser island canopy. Free product was measured at a
thickness of 0.51 feet in monitoring well MW-1. Terracon then installed a recovery well (RW-1) in the
former UST basin and collected groundwater samples from MW-2 and MW-3. Analysis of the
groundwater samples collected from MW-2 and MW-3 indicated concentrations of petroleum
contaminants exceeding the 2L standards. Additionally, four soil borings (SB-1, SB-2, SB-3, SB-4)
along the former UST basin perimeter were advanced to approximately 30 feet bls. Analysis of the
soil samples indicated concentrations of petroleum constituents exceeding Soil-to-Water (STW)
Maximum Soil Contaminant Concentrations (MSCCs) in all of the soil samples and a concentration of
C9-C22 aromatics exceeding the Residential MSCC in SB-3 (Terracon, 2020).
Erect Grocery
Seagrove, North Carolina
Terracon Project No. 70207596
Incident No. 6769
April 28, 2021
Responsive ■Resourceful ■Reliable 5
In March 2019, Advanced Environmental Services (AES) at Terracon’s direction, performed a
96-hour Mobile Multi-Phase Extraction (MMPE) event at wells MW-1 and RW-1. Prior to conducting
the MMPE event, 0.19 feet of free product was measured in monitoring well MW-1 (Terracon, 2019).
According to the AES field report dated April 2, 2019, a total of 3,343 gallons of a product/water
mixture was recovered from the two wells. Mass balance calculations indicated total VOC emissions
removed from the wells equated to 2.25 gallons (Terracon, 2020).
In April 2019, Terracon advanced four more soil borings near the main fuel dispenser island and
collected groundwater samples from the on-site monitoring wells. Multiple petroleum constituents
were recovered in soil samples at concentrations exceeding the STW MSCCs. Additionally, various
petroleum constituents were detected in groundwater samples at concentrations exceeding the 2L
standards. Benzene and 1,2-DCA were detected above the GCLs in RW-1 and MW-3 (Terracon,
2019).
In January 2020, AES at Terracon’s direction, conducted another 96-hour MMPE event at wells
MW-1 and RW-1. Free product was not detected in any of the wells prior to the event. According to
the AES field report dated February 3, 2020, a total of 3,389 gallons of a product/water mixture was
recovered from the two wells. Mass balance calculations indicated total VOC emissions removed
from the wells equated to 2.41 gallons (Terracon, 2020).
Following the MMPE event, Terracon returned to the site in February 2020 to collect groundwater
samples. Free product was not detected in any of the wells prior to sampling. Analytical results
revealed several petroleum constituents at concentrations exceeding the 2L standards.
Contaminants were not detected in water supply well WSW-1.
C.4 Potential Receptors
Three active water supply wells were identified within 1,000 feet of the source area. One of these
wells, WSW-1, is situated within 500 feet of the source area. WSW-1 (hydraulically upgradient) and
WSW-2 (hydraulically upgradient) are the closest water supply wells to the source area and are
situated approximately 275 feet northwest and 650 feet northeast of the source area, respectively.
The site is served by WSW-1, which has been sampled periodically since at least July 2005 and has
not contained detectable concentrations of petroleum constituents. According to Jared Byrd with
Coleridge Volunteer Fire Department, WSW-1 also supplies water to the current Station 10 fire
department and has historically supplied water to the site, a former school located on the same
parcel as the current Station 10, and the former Station 10 located at 5085 Fork Creek Mill Creek
Road. Municipal water is reportedly not available to the site and surrounding properties.
According to aerial photographs and the applicable topographic map for the site, the nearest surface
water feature is a pond located approximately 1,100 feet east of the site. Water supply well
information is presented in Table 2 and well locations and nearby surface water features are
depicted on Exhibit 3. Other ponds are present in Exhibit 3 that appear to be closer to the site than
the pond to the east; however, those ponds are likely intermittent because they don’t appear in aerial
photographs of the site.
Erect Grocery
Seagrove, North Carolina
Terracon Project No. 70207596
Incident No. 6769
April 28, 2021
Responsive ■Resourceful ■Reliable 6
D. ASSESSMENT INFORMATION
Terracon mobilized to the site on March 19, 2021 to collect groundwater samples from monitoring
wells (MW-1 through MW-3 and RW-1) and two water supply wells (WSW-1 and WSW-2). WSW-1
could not be sampled due to lack of permission to access the property.
D.1 Free Product Evaluation
Free product was not encountered in the monitoring wells during this sampling event. Free product
was last observed in MW-1 at a thickness of 0.19 feet in April 2019 and in MW-2 at a thickness of
0.30 feet in January 2018.
D.2 Groundwater Sampling Activities
Prior to sample collection, Terracon gauged the depth to groundwater in the four on-site monitoring
wells (MW-1 through MW-3 and RW-1). Depth-to-groundwater measurements ranged from
approximately 14.75 17.24 feet bTOC in March 2021. The approximate locations of the wells are
shown on the Site Plan (Exhibit 2). Groundwater elevations were calculated using the measured
depths to groundwater and the TOC elevations that are based on an arbitrary datum of 100 feet with
a benchmark. Current and historical groundwater elevation measurements are provided in Table 3.
Groundwater flow was estimated to be toward the southwest. Groundwater elevations and
groundwater elevation contours are depicted on Exhibit 4. Photographs and copies of field notes
are provided in Appendix A.
The wells were purged with a peristaltic pump using low-flow sampling techniques (i.e., <200
milliliters per minute) prior to sampling. Field parameters of pH, temperature, oxidation-reduction
potential, dissolved oxygen, and conductivity were measured at each of the well locations. After
stabilization of pH and conductivity, a groundwater sample was collected directly into laboratory-
supplied containers at low-flow sampling rates.
Groundwater samples were collected from water supply wells WSW-2. The groundwater samples
were collected by allowing water to flow from a spigot for approximately 15 minutes prior to collecting
the sample to retrieve a fresh sample from the well. Flow from the spigot was reduced when the
sample was collected directly into laboratory-supplied containers. WSW-1 could not be sampled due
to lack of permission to access the property.
The groundwater samples were placed in laboratory-supplied glassware, labeled, and stored in an
ice-packed cooler. The samples, along with chain-of-custody documentation, were delivered to Pace
Analytical Services, LLC., in West Columbia, South Carolina for analysis of VOCs by United States
Environmental Protection Agency Method 6200B including MTBE, ethylene dibromide, and IPE.
Erect Grocery
Seagrove, North Carolina
Terracon Project No. 70207596
Incident No. 6769
April 28, 2021
Responsive ■Resourceful ■Reliable 7
D.3 Groundwater Analytical Results
Based on the laboratory analytical reports, benzene, 1,2-DCA, ethylbenzene, IPE, MTBE,
naphthalene, n-propylbenzene, 1,2,4 trimethylbenzene, toluene, and total xylenes were identified at
concentrations above the 2L standards in monitoring wells MW-1, MW-2, MW-3, and/or RW-1. GCL
exceedances were not identified in the monitoring wells; however, the concentrations of benzene,
1,2-DCA, IPE, MTBE, and naphthalene were detected at concentrations at least 10 times greater
than the 2L standard in MW-1, MW-3, and/or RW-1. Other petroleum constituents were present at
concentrations below the applicable 2L standards in the monitoring well samples.
MTBE was detected above the laboratory’s detection limits in water supply wells WSW-2, but below
the 2L standard.
A summary of groundwater analytical results is included on Table 4 and Exhibit 5. Copies of the
laboratory analytical reports are provided in Appendix B. Isoconcentration maps for benzene,
1,2-DCA, IPE, MTBE, and naphthalene are provided as Exhibits 6, 7, 8, 9, and 10, respectively.
These maps depict the approximate lateral extent of benzene and MTBE in the groundwater;
however, the contaminant plume has not been delineated to the south and east.
E. CONCLUSIONS AND RECOMMENDATIONS
Based on information obtained during the completion of groundwater monitoring activities, Terracon
provides the following conclusions:
n Benzene, 1,2-DCA, ethylbenzene, IPE, MTBE, naphthalene, n-propylbenzene,
1,2,4-trimethylbenzene, toluene, and total xylenes were detected in monitoring wells MW-1,
MW-2, MW-3, and/or RW-1 at concentrations exceeding the 2L standards.
n MTBE was detected above the laboratory reporting limits in water supply well WSW-2, but
below the 2L standard.
n GCL exceedances were not identified in the monitoring wells. However, benzene was
detected in RW-1 in April 2019 and 1,2-DCA detected in MW-3 in April 2019 at
concentrations that exceeded the GCLs.
n Measurable thicknesses of free product were not observed in the monitoring wells. Free
product thicknesses have historically been observed in MW-1 and MW-2.
n The contaminant plume has not been delineated to the south and east of the source area
and likely extends off-site in those directions. The contaminant plume is not delineated
vertically, and vertical delineation may be necessary due to nearby water supply wells.
n Three active water supply wells were identified within 1,000 feet of the source area. One of
these wells, WSW-1, is situated within 500 feet of the source area. WSW-1 (hydraulically
upgradient) and WSW-2 (hydraulically upgradient) are the closest water supply wells to the
source area and are situated approximately 275 feet northwest and 650 feet northeast of the
Erect Grocery
Seagrove, North Carolina
Terracon Project No. 70207596
Incident No. 6769
April 28, 2021
Responsive ■Resourceful ■Reliable 8
source area, respectively. The site is served by WSW-1, which has been sampled
periodically since at least July 2005 and has not contained detectable concentrations of
petroleum constituents. Municipal water is reportedly not available to the site and
surrounding properties.
n Based on the ITRC PVI Guidance regarding the presence of precluding factors such as the
1,2-DCA identified on site, additional evaluation of the PVI pathway is warranted. To further
evaluate the PVI pathway, Terracon compared groundwater concentrations to their
respective DWM VISLs. The observed groundwater concentrations do exceed their
respective VISLs, therefore, an additional PVI pathway evaluation may be warranted.
Based on the data presented in this Annual Monitoring report, Terracon recommends the following
activities be completed at the site.
n Groundwater monitoring wells (MW-1, MW-2, MW-3, and RW-1) and water supply wells
(WSW-1 and WSW-2) should be sampled semi-annually to evaluate the status of the
groundwater contaminant plume.
n Consider installing paired sentinel wells, with shallow and deep screened intervals, between
the source area and WSW-1 to monitor the potential for increasing MTBE concentrations
toward WSW-1.
n Install two additional monitoring wells in the down-gradient (south-southwest) direction in an
attempt to delineate the downgradient edge of the contaminant plume.
n Additional evaluation of the PVI pathway based on the observed petroleum concentrations in
groundwater and the continued use of the on-site gas station and convenience store.
REFERENCES
n Pyramid Environmental & Engineering, P.C. (Pyramid), 2005. Limited Site Investigation, Erect Grocery,
September 9.
n Terracon Consultants, Inc. (Terracon), 2018. Federal/State-Lead Monitoring Report, Former Erect
Grocery, March 29.
n Terracon, 2019. Subsequent Monitoring Report, Former Erect Grocery, July 9.
n Terracon, 2020. Subsequent Monitoring Report, Former Erect Grocery, April 27.

EXHIBITS
E:\Projects\70207596_ErectRoad\Maps\8_5x11Topo.mxd0 2,000 4,0001,000 FeetLegend
Site Boundary DATA SOURCES:USGS Topo tile base map service of The Nattional Map(TNM), data refreshed May 2020; Site Boundary basedon Randolph County Parcel Data.
Topographic Vicinity Map EXHIBITNO.
Former Erect Grocery (Incident No. 6769)7816 Erect RoadSeagrove, Randolph County, North Carolina2401 Brentwood Road, Suite 107 Raleigh, NC 27604Phone: [phone] Fax: [phone]
PM:
Drawn By:
Checked By:
Approved By:
AKS
KT
ECD
DRM
Project No:
Scale:
Filename:
Date:April 2021
Site Diagram.mxd
70207596
11 inch = 2,000 feet
³
Site
@A@A
@A
@A
"!
"!
"!
"!"!Erect RdFork Creek Mill Rd
Gravel
Asphalt
Teague StoreGrass
Wooded
Asphalt Drive
RW-1
MW-1
MW-2
MW-3
E:\Projects\70207596_ErectRoad\Maps\SitePlan.mxd0 40 8020FeetSite Boundary
Approximate Former UST Pit Location
Concrete Pad
Dispenser Island
Off-Road Diesel Dispensers
"!ASTs in Secondary Containment
@A Monitoring Well
"!Propane AST DATA SOURCES:Latest High-Resolution NC Statewide Orthoimagery, NCOneMap Server; 2018; Site Boundary based onRandolph County Parcel Data.
Site Plan EXHIBITNO.
Former Erect Grocery (Incident No. 6769)7816 Erect RoadSeagrove, Randolph County, North Carolina2401 Brentwood Road, Suite 107 Raleigh, NC 27604Phone: [phone] Fax: [phone]
PM:
Drawn By:
Checked By:
Approved By:
AKS
KT
ECD
DRM
Project No:
Scale:
Filename:
Date:April 2021
SitePlan.mxd
70207596
21 inch = 40 feet
³
ED
ED
ED
ED
ED
ED
ED
ED
ED
ED
ED
Erect RdB e n n e t t R d
Fork Creek Mill Rd
7
4
3
1
9
2
10
6
5
11
8
E:\Projects\70207596_ErectRoad\Maps\WaterSupplyWell.mxd0 500 1,000250Site Boundary Feet
500 ft Buffers
Lake/Pond
Stream/River ED Water Supply Well DATA SOURCES:Latest High-Resolution NC Statewide Orthoimagery, NCOneMap Server; 2018; Site Boundary based onRandolph County Parcel Data.
Water Supply Well Location Map EXHIBITNO.
Former Erect Grocery (Incident No. 6769)7816 Erect RoadSeagrove, Randolph County, North Carolina2401 Brentwood Road, Suite 107 Raleigh, NC 27604Phone: [phone] Fax: [phone]
PM:
Drawn By:
Checked By:
Approved By:
AKS
KT
ECD
DRM
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Scale:
Filename:
Date:April 2021
WaterSupplyWell.mxd
70207596
31 inch = 500 feet
³
500'
1000'
1500'
500'
1000'
1500'
@A@A
@A
@A
"!
"!
"!
"!"!Erect RdFork Creek Mill Rd
84.5084.00
83.50
83.00
RW-182.56
MW-184.87
MW-283.05
MW-383.40
Gravel
Asphalt
Teague StoreGrass
Wooded
Asphalt Drive
E:\Projects\70207596_ErectRoad\Maps\GroundWaterElev.mxd0 40 8020FeetSiteBoundary
Approximate Former UST Pit Location
Concrete Pad
Dispenser Island
Off-Road Diesel Dispensers
Groundwater Elevation Contours
"!ASTs in Secondary Containment
"!Propane AST
@A Monitoring Well
Flow Direction DATA SOURCES:Latest High-Resolution NC Statewide Orthoimagery, NCOneMap Server; 2018; Site Boundary based onRandolph County Parcel Data.
Groundwater Elevation Map (March 2021)EXHIBITNO.
Former Erect Grocery (Incident No. 6769)7816 Erect RoadSeagrove, Randolph County, North Carolina2401 Brentwood Road, Suite 107 Raleigh, NC 27604Phone: [phone] Fax: [phone]
PM:
Drawn By:
Checked By:
Approved By:
AKS
KT
ECD
DRM
Project No:
Scale:
Filename:
Date:April 2021
Site Diagram.mxd
70207596
41 inch = 40 feet
³
Note: RW-1 not used to determine groundwater elevation contours due to difference in well construction and groundwater elevation
@A@A
@A
@A
"!
"!
"!
"!"!Erect RdFork Creek Mill Rd
Gravel
Asphalt
Teague StoreGrass
Wooded
Asphalt Drive
E:\Projects\70207596_ErectRoad\Maps\GroundWaterAnalytical.mxd0 40 8020Feet
SiteBoundary
Approximate Former UST Pit Location
Concrete Pad
Dispenser Island
Off-Road Diesel Dispensers
"!ASTs in Secondary Containment
"!Propane AST
@A Monitoring Well DATA SOURCES:Latest High-Resolution NC Statewide Orthoimagery, NCOneMap Server; 2018; Site Boundary based onRandolph County Parcel Data.
Groundwater Analytical Results (March 2021)EXHIBITNO.
Former Erect Grocery (Incident No. 6769)7816 Erect RoadSeagrove, Randolph County, North Carolina2401 Brentwood Road, Suite 107 Raleigh, NC 27604Phone: [phone] Fax: [phone]
PM:
Drawn By:
Checked By:
Approved By:
AKS
KT
ECD
DRM
Project No:
Scale:
Filename:
Date:April 2021
Site Diagram.mxd
70207596
51 inch = 40 feet
³
Notes: µg/L = Micrograms per LiterConcentrations in BOLD exceed 2L StandardsMTBE: Methyl tert-butyl ether
MW-3 Benzene - 3,300 1,2-Dichloroethane - 180 Ethylbenzene - 400Isopropylbenzene - 44 Diisopropyl ether - 2,600 MTBE - 1,300Naphthalene - 190 n-Propylbenzene -871,2,4-Trimethylbenzene - 520 1,3,5-Trimethylbenzene - 150 Toluene -100 Total Xylenes - 784
MW-2Benzene - 140 n-Butlylbenzene - 3.0 1,2-Dichloroethane - 13 Ethylbenzene - 16 Isopropylbenzene - 10 Diisopropyl ether - 210 MTBE - 140 Naphthalene - 22
n-Propylbenzene - 101,2,4-Trimethylbenzene - 3.3 Toluene - 4.4
Total Xylenes - 8.0
MW-1 Benzene - 4,800 1,2-Dichloroethane - 51 Ethylbenzene - 910 Isopropylbenzene - 51 Diisopropyl ether - 600MTBE - 1,100 Naphthalene - 270 n-Propylbenzene -110 1,2,4-Trimethylbenzene - 840 1,3,5-Trimethylbenzene - 210 Toluene - 2,300 Total Xylenes - 3,740
RW-1 Benzene - 2,500 1,2-Dichloroethane - 44Ethylbenzene - 530 Isopropylbenzene - 35 Diisopropyl ether - 500 MTBE - 1,100 Naphthalene - 180 n-Propylbenzene - 88 1,2,4-Trimethylben zene - 560 1,3,5-Trimethylbenzene - 140
Toluene - 130Total Xylenes - 1,581
@A@A
@A
@A
"!
"!
"!
"!"!Erect RdFork Creek Mill Rd
Gravel
Asphalt
Teague StoreGrass
Wooded
Asphalt Drive
1,000 µg/L1 0 0 µg /L
1 µg/L
N:\GIS\2020\70207596_ErectRoad\Maps\benzeneIsoconcentration.mxd0 40 8020Feet
SiteBoundary
Benzene Isoconcentrations
Approximate Former UST Pit Location
Concrete Pad
Dispenser Island
Off-Road Diesel Dispensers
"!ASTs in Secondary Containment
"!Propane
@A Monitoring Well
DATA SOURCES:Latest High-Resolution NC Statewide Orthoimagery, NCOneMap Server; 2018; Site Boundary based onRandolph County Parcel Data.
Benzene Isoconcentration Map (March 2021)EXHIBITNO.
Former Erect Grocery (Incident No. 6769)7816 Erect RoadSeagrove, Randolph County, North Carolina2401 Brentwood Road, Suite 107 Raleigh, NC 27604Phone: [phone] Fax: [phone]
PM:
Drawn By:
Checked By:
Approved By:
AKS
KT
ECD
DRM
Project No:
Scale:
Filename:
Date:April 2021
Site Diagram.mxd
70207596
61 inch = 40 feet
³
Notes: Concentrations reported in micrograms per liter (µg/L)2L Standard for Benzene is 1 µg/L
MW-2140
MW-14,800
RW-12,500
MW-32,500
@A@A
@A
@A
"!
"!
"!
"!"!Erect RdFork Creek Mill Rd
RW-1MW-1 4451
MW-213
MW-3180
Gravel
Asphalt
Teague StoreGrass
Wooded
Asphalt Drive
40 µg/L4.0 µg/L E:\Projects\70207596_ErectRoad\Maps\DichloroeIsoconcentration.mxd0 40 8020Feet
SiteBoundary
1,2, Dichloroethane Isoconcentrations
Approximate Former UST Pit Location
Concrete Pad
Dispenser Island
Off-Road Diesel Dispensers
"!ASTs in Secondary Containment
"!Propane AST
@A Monitoring Well
DATA SOURCES:Latest High-Resolution NC Statewide Orthoimagery, NCOneMap Server; 2018; Site Boundary based onRandolph County Parcel Data.
1,2-Dichloroethane Isoconcentration Map (March 2021)EXNHOIB.IT
Former Erect Grocery (Incident No. 6769)7816 Erect Road
2401 Brentwood Road, Suite 107 Raleigh, NC 27604 Seagrove, Randolph County, North Carolina
Phone: [phone] Fax: [phone]
PM:
Drawn By:
Checked By:
Approved By:
AKS
KT
ECD
DRM
Project No:
Scale:
Filename:
Date:April 2021
Site Diagram.mxd
70207596
71 inch = 40 feet
³
Notes:
Concentrations reported in micrograms per liter (µg/L)2L Standard for 1,2-Dichloroethane is 0.4 µg/L
@A@A
@A
@A
"!
"!
"!
"!"!Erect RdFork Creek Mill Rd
Gravel
Asphalt
Teague StoreGrass
Wooded
Asphalt Drive
N:\GIS\2020\70207596_ErectRoad\Maps\benzeneIsoconcentration.mxd0 40 8020Feet
SiteBoundaryApproximate Former UST Pit LocationConcrete Pad
Dispenser Island
Off-Road Diesel Dispensers
"!ASTs in Secondary Containment
"!Propane AST
@A Monitoring Well
DATA SOURCES:Latest High-Resolution NC Statewide Orthoimagery, NCOneMap Server; 2018; Site Boundary based onRandolph County Parcel Data.
Diisopropyl Ether Isoconcentration Map (March 2021)EXHIBITNO.
Former Erect Grocery (Incident No. 6769)7816 Erect RoadSeagrove, Randolph County, North Carolina2401 Brentwood Road, Suite 107 Raleigh, NC 27604Phone: [phone] Fax: [phone]
PM:
Drawn By:
Checked By:
Approved By:
AKS
KT
ECD
DRM
Project No:
Scale:
Filename:
Date:April 2021
Site Diagram.mxd
70207596
81 inch = 40 feet
³
Notes: Concentrations reported in micrograms per liter (µg/L)2L Standard for diisopropyl ether is 70 µg/L
MW-1600
MW-32,600
MW-2210
RW-1500
70 µg/L700 µg/LDiisopropyl Ether Isoconcentrations
@A@A
@A
@A
"!
"!
"!
"!"!Erect RdFork Creek Mill Rd
Gravel
Asphalt
Teague StoreGrass
Wooded
Asphalt Drive
200 µg/L2 0 µg /L
N:\GIS\2020\70207596_ErectRoad\Maps\benzeneIsoconcentration.mxd0 40 8020Feet
SiteBoundary
MTBE IsoconcentrationsApproximate Former UST Pit Location
Concrete Pad
Dispenser IslandOff-Road Diesel Dispensers
"!ASTs in Secondary Containment
"!Propane AST
@A Monitoring Well
DATA SOURCES:Latest High-Resolution NC Statewide Orthoimagery, NCOneMap Server; 2018; Site Boundary based onRandolph County Parcel Data.
MTBE Isoconcentration Map (March 2021)EXHIBITNO.
Former Erect Grocery (Incident No. 6769)7816 Erect RoadSeagrove, Randolph County, North Carolina2401 Brentwood Road, Suite 107 Raleigh, NC 27604Phone: [phone] Fax: [phone]
PM:
Drawn By:
Checked By:
Approved By:
AKS
KT
ECD
DRM
Project No:
Scale:
Filename:
Date:April 2021
Site Diagram.mxd
70207596
91 inch = 40 feet
³
Notes: Concentrations reported in micrograms per liter (µg/L)MTBE: Methyl tert-butyl ether2L Standard for MTBE is 20 µg/L
MW-2140
MW-11,100
RW-11,100
MW-31,300
@A@A
@A
@A
"!
"!
"!
"!"!Erect RdFork Creek Mill Rd
Gravel
Asphalt
Teague StoreGrass
Wooded
Asphalt Drive
60 µg/L6 µg/L N:\GIS\2020\70207596_ErectRoad\Maps\benzeneIsoconcentration.mxd0 40 8020Feet
SiteBoundary
Naphthalene IsoconcentrationsApproximate Former UST Pit Location
Concrete Pad
Dispenser IslandOff-Road Diesel Dispensers
"!ASTs in Secondary Containment
"!Propane AST
@A Monitoring Well
DATA SOURCES:Latest High-Resolution NC Statewide Orthoimagery, NCOneMap Server; 2018; Site Boundary based onRandolph County Parcel Data.
Naphthalene Isoconcentration Map (March 2021)EXHIBITNO.
Former Erect Grocery (Incident No. 6769)7816 Erect RoadSeagrove, Randolph County, North Carolina2401 Brentwood Road, Suite 107 Raleigh, NC 27604Phone: [phone] Fax: [phone]
PM:
Drawn By:
Checked By:
Approved By:
AKS
KT
ECD
DRM
Project No:
Scale:
Filename:
Date:April 2021
Site Diagram.mxd
70207596
101 inch = 40 feet
³
Notes:Concentrations reported in micrograms per liter (µg/L)2L Standard for naphthalene is 6 µg/L
MW-1270
MW-222
RW-1180
MW-3190

TABLES
Table 1
Conceptual Site Model
Erect Grocery (Incident #6769)
7816 Erect Road, Seagrove, North Carolina
Terracon Project Number: 70207596
Two 2,000-gallon gasoline USTs
Unknown - soil borings around current on-site dispensers identified concentrations of
petroleum compounds above STW MSCCs in soil.
Unknown
Unknown
Residual Impacts
Extent
Contaminants of Concern
Concentrations
Soil Type
Residual Impacts Yes
Extent Vicinity of former UST basin and current dispenser island
Contaminants of Concern Petroleum VOCs & SVOCs including benzene, naphthalene, and C9-C22 aromatics
Concentrations Above STW MSCCS and C9-C22 above residential MSCCs in at least 1 location
Soil Type Sandy silt
Source to GW?Yes - soil concentrations greater than STW MSCCs
NAPL Present? Residual or Mobile?Historically in MW-1 and MW-2; last observed in April 2019
Depth to Groundwater 15 to 20 feet below land surface
Hydraulic Conductivity Unknown
Delineated? If so, extent?Not delineated to south-southwest or vertically
Extend Off-Site?Likely extends off-site to south and east
Contaminants of Concern Benzene, 1,2-DCA, IPE, MTBE, naphthalene, and other petroleum compounds
Concentrations Benzene (RW-1) and 1,2-DCA (MW-3) historically above GCL, other VOCs (IPE, MTBE, and
naphthalene) >10x the 2L Standard
Trends Concentrations slightly increasing or generally stable since 2010
Horizontal Gradient Approximately 0.03 to 0.05 ft/ft
Vertical Gradient Unknown
Depth to Groundwater
Delineated? If so, extent?
Extends Off-Site?
Hydraulic Conductivity
Contaminants of Concern
Concentrations
Trends
Horizontal Gradient
Approximately 1,100 feet east (pond)
Lateral Distance from Impacts to Building 10 feet - contaminant plume likely extends under building
Depth to GW 15 to 20 feet below land surface
Precluding Factors Present? Specify.1,2-DCA (lead scavenger) detections in groundwater
GW Concentrations > VISLs?Yes
Exterior Soil Gas Concentrations >VISLs?
Sub-Slab/Crawlspace Concentrations > VISLs?
Indoor Air Concentrations > VISLs?
Is the VI Pathway Complete?
Soil over excavation during UST closure in 1990. Confirmation soil samples indicated TPH
concentration above NCDEQ Action Levels.
2 MMPE events - recovered approximately 4.66 gallons of total VOC emissions
Number within 250 feet None
Number within 250-500 feet 1 active (WSW-1) - supplies water to site and Coleridge Fire Department (7718 Erect Road)
Number within 500-1,000 feet 2 active (WSW-2 and WSW-6)
Pond approximately 1,100 ft east from source area
On-site store employees
Non-Residential - currently retail (Teague Store)
Concentrations above STW and Residential MSCCs - close with deed restriction
NAPL and/or >GCLs Residual NAPL & GCLs historically present; reduce concentrations (potentially via excavation or
active remediation)
Water Supply Wells Abandon water supply wells and connect to municipal water if possible
Low risk based on distance >500 ft (NCDEQ UST Guidance)
Further evaluation of VI Pathway necessary
Notes:
MSCC: NCDEQ maximum soil contaminant concentrations UST: underground storage tank PCE: tetrachloroethene
STW: soil-to-groundwater NA: not applicable TCE: trichloroethene
2L Standard: 15A NCAC 2L groundwater quality standards VI: Vapor Intrusion TPH: Total petroleum hydrocarbons
GCL: NCDEQ gross contamination levels GW: groundwater
VISL: NCDEQ vapor intrusion screening levels VOC: volatile organic compound
NAPL: non-aqueous phase liquid SVOC: semi-volatile organic compound
NCDEQ UST Guidance: NCDEQ UST SectionGuidelines for Assessment BTEX: benzene, toluene, ethylbenzene, xylenes
and Corrective Action for UST Releases DCA: dichloroethane
Not Sampled
Source
Areas
UST(s)
Dispensers
Piping
Other
SubsurfaceGroundwaterSurficialNot Sampled
BedrockSoilPhysiographic Province
SurficialNot Sampled
SurfaceWaterDistance from Source
Contaminants of Concern
Not SampledConcentrations
Groundwater or Surficial Source?Soil VaporScreeningAssessmentRemediationSoil (Type, When, Successful?)
Groundwater (Type, When, Successful?)ReceptorsWSWsSurface Water (Modeling/Screening or Empirical)
Vapor Intrusion (Modeling/Screening or Empirical)Closure PathwayCurrent/Proposed Property Use
Soil
GWSurface Water
Vapor Intrusion
Table 2
Water Supply Well Information
Erect Grocery (Incident #6769)
7816 Erect Road, Seagrove, North Carolina
Terracon Project Number: 70207596
WSW-1 Colridge Fire Department 4495 NC HWY 22 South
Ramseur, NC 27316
7718 Erect Road
Seagrove, NC 27341 275 feet Potable 8605397302 Supplies water to site
WSW-2 Charles & Mary Jane Teague 7711 Erect Road
Seagrove, NC 27341
7815 Erect Road
Seagrove, NC 27341 650 feet Potable 8605491470
WSW-3 George Teague 4951 Fork Creek Mill Road
Seagrove, NC 27341
4951 Fork Creek Mill Road
Seagrove, NC 27341 1,390 feet Potable 8605296375
WSW-4 George Teague 4951 Fork Creek Mill Road
Seagrove, NC 27341
4951 Fork Creek Mill Road
Seagrove, NC 27341 1,450 feet Potable 8605296693
WSW-5 Jeffery & Leah Sugg PO Box 4730
Asheboro, NC 27240
7978 Erect Road
Seagrove, NC 27341 975 feet Potable 8605385162
WSW-6 Jeffery & Leah Sugg PO Box 4730
Asheboro, NC 27240
7978 Erect Road
Seagrove, NC 27341 1,050 feet Potable 8605385162
WSW-7 Shirley King Gillispie Life Estate 4968 Fork Creek Mill Road
Seagrove, NC 27341
4968 Fork Creek Mill Road
Seagrove, NC 27341 1,225 feet Potable 8605286936
WSW-8 William and Christina Teague 7630 Erect Road
Seagrove, NC 27341
7630 Erect Road
Seagrove, NC 27341 1,300 feet Potable 8606305285
WSW-9 Derek & Amanda Johnson 7660 Erect Road
Seagrove, NC 27341
7660 Erect Road
Seagrove, NC 27341 1,180 feet Potable 860595980
WSW-10 Charles and Harold Teague 7711 Erect Road
Seagrove, NC 27341 No address 1,020 feet Potable 8605691794
WSW-11 Clay Sugg 8010 Erect Road
Seagrove, NC 27341
8010 Erect Road
Seagrove, NC 27341 1,210 feet Potable 8605379465
Well Status/Use Parcel ID NotesWell No.Property Owner Mailing Address Property Address Distance/Directions from
source area
Table 3
Monitoring Well Construction Information and Historical Groundwater Elevations
Erect Grocery (Incident #6769)
7816 Erect Road, Seagrove, North Carolina
Terracon Project Number: 70207596
Well ID Date Water Level
Measured
Well Casing Depth
(ft. BGS)
Screened Interval
(x to y ft. BGS)
Bottom of Well
(ft. BGS)
Top of Casing
Elevation (ft.)
Depth to Water
from Top of
Casing (ft.)
Free Product
Thickness (ft.)
Groundwater
Elevation (ft.)Comments
07/20/05 21.25 0.11 78.45
01/25/18 32.23 0.51 67.76
04/16/19 16.30 0.19 83.46
02/03/20 18.40 -81.22
03/19/21 14.75 -84.87
01/25/18 31.15 0.30 68.13
04/16/19 16.92 -82.36
02/03/20 19.14 -80.14
03/19/21 16.23 -83.05
01/25/18 31.10 -68.90
04/16/19 15.73 -84.27
02/03/20 19.43 -80.57
03/19/21 16.60 -83.40
04/16/19 15.84 -83.96
02/03/20 19.01 -80.79
03/19/21 17.24 -82.56
Notes:
"-" indicates a measurable amount of free product was not detected
Groundwater elevations adjusted for measurable free product by using the following calculation: (TOC Elevation - Depth to water) + (FP thickness * 0.729)
0.729 is the specific gravity for automotive gasoline
Elevations based on an arbitrary datum of 100.00 feet with a benchmark.
MW-2
MW-3
99.62 Type II
30.0 30-50
15-50 50.0
RW-1
15.0
50.0 99.28 Type II
100.00
30.0 30-50 50.0 99.80
Type II
4"
Extraction
Well
30.0 30-45 45.0
MW-1
Table 4
Summary of Groundwater Analytical Results
Erect Grocery (Incident #6769)
7816 Erect Road, Seagrove, North Carolina
Terracon Project Number: 70207596
Well/Sample
I.D.
Date Collected
(mm/dd/yy)
1 70 70 70 3 0.02 0.4 600 70 70 25 NE 100 20 6 70 400 400 600 500
5,000 6,900 8,500 15,000 NE 50 400 84,500 25,000 70,000 11,700 NE 100,000 20,000 6,000 30,000 28,500 25,000 260,000 85,500
6.9 NE NE NE 19,000 0.77 9.8 15 750 5,900 NE 6,900 470,000 2,000 20 2,000 210 150 16,000 320
7/20/2005 1,170 ND 5.42 ND 3.48 2.82 79.9 107 38 279 3.9 ND ND 820 46.6 86 212 26.8 1,520 972
1/25/2018
4/16/2019 3,900 22 10 <0.88 <2.2 <0.51 37 940 48 480 6.6 <0.065 56 1,300 490 150 1,600 360 3,500 5,500
2/3/2020 690 5.0 2.6 J <1.7 <3.5 <1.9 49 70 13 620 <2.0 <15 <17 1,000 74 21 170 45 190 530
3/19/2021 4,800 <25 <25 <25 <25 <25 51 910 51 600 <25 --1,100 270 110 840 210 2,300 3,740
7/20/2005
1/25/2018 530 3.1 1.9 1.7 <0.50 <0.50 37 60 7.5 750 1.8 ND ND 630 32 13 44 11 64 160
4/16/2019 840 11 6.0 1.5 <2.2 <0.051 33 81 42 430 4.1 <0.065 3.5 160 77 36 76 19 44 130
2/3/2020 130 4.6 2.8 0.98 <0.35 <0.19 6.3 2.6 13 110 3.5 <1.5 <1.7 23 22 8.9 57 16 10 91.1
3/19/2021 140 3.0 <2.5 <2.5 <2.5 <2.5 13 16 10 210 <2.5 --140 22 10 3.3 <2.5 4.4 8.0
7/20/2005
1/25/2018 4,800 40 20 16 <0.50 <0.50 270 990 74 4,400 20 ND ND 4,300 460 190 1,100 290 910 4,600
4/16/2019 2,500 11 8 <0.88 <2.2 <0.51 400 210 36 5,400 7.7 <0.65 56 4,200 260 66 680 220 130 1,500
2/3/2020 1,600 12 J <8.0 <8.5 <18 <9.5 240 380 42 3,600 <10 <76 <84 2,500 330 74 520 190 150 1,390
3/19/2021 3,300 <25 <25 <25 <25 <25 180 400 44 2,600 <25 --1,300 190 87 520 150 100 784
7/20/2005
1/25/2018
4/16/2019 7,500 12 7.2 <0.88 <2.2 3.1 J 76 1,400 55 910 4.6 J 13 74 1,700 420 140 1,200 260 6,900 6,800
2/3/2020
3/19/2021 2,500 <25 <25 <25 <25 <25 44 530 35 500 <25 --1,100 180 88 560 140 130 1,581
2/3/2020 <0.18 <2.1 <0.16 <0.17 <0.35 <0.19 <0.41 <0.13 <0.17 <0.17 <0.20 <1.5 <1.7 <0.25 <0.31 <0.13 <0.18 <0.14 <0.14 <0.17
3/19/2021 Not Sampled - Access Not Granted
WSW-2 3/19/2021 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 --2.1 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50
Notes: Results in micrograms per liter (µg/L).J - estimated value below laboratory reporting limit and above method detection limit.
Petroleum compounds detected in one or more samples are shown.Non-Residential GW-VISLs: NCDEQ Non-Residential Groundwater Vapor Intrusion Screening Levels, dated January 2021.
ND - Not detected.
Gray shading denotes concentrations above 15A NCAC 2L groundwater standard (2L standard).
Yellow shading denotes concentrations above Gross Contamination Levels (GCLs).
RW-1
MW-3
2L Standard (µg/L)
GCL (µg/L)
Non-Residential GW-VISLs (µg/L)n-Propylbenzene1,2,4-Trimethylbenzene1,3,5-TrimethylbenzeneMW-1
MW-2 tert-ButylbenzeneChloroethaneDiisopropyl ether (IPE)Methyl Butyl KetoneMethyl Isobutyl KetoneWSW-1 Xylenes (Total)Analytical Method
Contaminant of Concern →p-IsopropyltolueneBenzeneEthylbenzeneIsopropylbenzenesec-Butylbenzenen-Butylbenzene1,2-Dichloroethane1,2-Dibromoethane(EDB)TolueneNaphthaleneMethyl tert-Butyl Ether(MTBE)

APPENDIX A
PHOTOGRAPHS AND FIELD NOTES

Groundwater Sampling Event
Erect Grocery (Incident No. 6769)■Seagrove, North Carolina
Photos Taken: March 19, 2021 ■Terracon Project No. 70207596
Photo #1 View of the on-site Teague Store (7816 Erect Rd);
facing northwest.
Photo #2 View of MW-2; facing
northwest.
Photo #3 View of MW-1 and RW-1;
facing southwest.

APPENDIX B
LABORATORY ANALYTICAL RESULTS AND
CHAIN-OF-CUSTODY FORMS

The electronic signature above is the equivalent of a handwritten signature.
This report shall not be reproduced,except in its entirety,without the written approval of Pace Analytical Services,LLC.
Pace Analytical Services,LLC (formerly Shealy Environmental Services,Inc.)
106 Vantage Point Drive West Columbia,SC 29172
Tel:[phone] Fax:[phone] www.pacelabs.com
Report of Analysis
Terracon Consultants,Inc.
2401 Brentwood Road
Suite 107 I
Raleigh,NC 27604
Attention:Kyle Church
Project Name:Erect Grocery
Project Number:70207596
Lot Number:WC20017
Date Completed:03/31/2021
04/01/2021 6:17 PM
Approved and released by:
Project Manager II:Cathy S.Dover
Page 1 of 33
PACE ANALYTICAL SERVICES,LLC
SC DHEC No:32010001 NELAC No:E87653 NC DENR No:329 NC Field Parameters No:5639
Pace Analytical Services,LLC (formerly Shealy Environmetal Services,Inc.)
106 Vantage Point Drive West Columbia,SC 29172 [phone] Fax [phone] www.pacelabs.com
Case Narrative
Terracon Consultants,Inc.
Lot Number:WC20017
This Report of Analysis contains the analytical result(s)for the sample(s)listed on the Sample Summary
following this Case Narrative.The sample receiving date is documented in the header information
associated with each sample.
All results listed in this report relate only to the samples that are contained within this report.
Sample receipt,sample analysis,and data review have been performed in accordance with the most
current approved The NELAC Institute (TNI)standards,the Pace Analytical Services,LLC ("Pace")
Laboratory Quality Manual,standard operating procedures (SOPs),and Pace policies.Any exceptions to
the TNI standards,the Laboratory Quality Manual,SOPs or policies are qualified on the results page or
discussed below.
VOA 6200B
The method blank associated with batch 87386 had hexachlorobutadiene &1,2,3 TCB detected at a
concentration that was above the DL but below the LOQ. All associated samples in the batch were on-
detect for these two analytes.
If you have any questions regarding this report please contact the Pace Project Manager listed on the
cover page.
Page 2 of 33
PACE ANALYTICAL SERVICES, LLC
Sample Summary
Terracon Consultants, Inc.
Lot Number: WC20017

Project Name: Erect Grocery
Project Number: 70207596
Sample Number Sample ID Matrix Date Sampled Date Received
001 03/19/2021 1135MW-1 Aqueous 03/20/2021
002 03/19/2021 1045MW-2 Aqueous 03/20/2021
003 03/19/2021 1040MW-3 Aqueous 03/20/2021
004 03/19/2021 1140RW-1 Aqueous 03/20/2021
005 03/19/2021 1050FB-01 Aqueous 03/20/2021
006 03/19/2021TB-01 Aqueous 03/20/2021
007 03/19/2021 1215WSW-2 Aqueous 03/20/2021
(7 samples)
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Page 3 of 33
PACE ANALYTICAL SERVICES, LLC
Detection Summary
Terracon Consultants, Inc.
Lot Number: WC20017

Project Name: Erect Grocery
Project Number: 70207596
Sample Sample ID Matrix Parameter Method Result Q Units Page
001 MW-1 Aqueous Benzene SM 6200B-4800 ug/L 6
001 MW-1 Aqueous 1,2-Dichloroethane SM 6200B-51 ug/L 6
001 MW-1 Aqueous Diisopropyl ether (IPE)SM 6200B-600 ug/L 6
001 MW-1 Aqueous Ethylbenzene SM 6200B-910 ug/L 6
001 MW-1 Aqueous Isopropylbenzene SM 6200B-51 ug/L 6
001 MW-1 Aqueous Methyl tertiary butyl ether SM 6200B-1100 ug/L 6
001 MW-1 Aqueous Naphthalene SM 6200B-270 ug/L 6
001 MW-1 Aqueous n-Propylbenzene SM 6200B-110 ug/L 6
001 MW-1 Aqueous Toluene SM 6200B-2300 ug/L 7
001 MW-1 Aqueous 1,3,5-Trimethylbenzene SM 6200B-210 ug/L 7
001 MW-1 Aqueous 1,2,4-Trimethylbenzene SM 6200B-840 ug/L 7
001 MW-1 Aqueous m+p - Xylenes SM 6200B-2900 ug/L 7
001 MW-1 Aqueous o - Xylenes SM 6200B-840 ug/L 7
002 MW-2 Aqueous Benzene SM 6200B-140 ug/L 8
002 MW-2 Aqueous n-Butylbenzene SM 6200B-3.0 ug/L 8
002 MW-2 Aqueous 1,2-Dichloroethane SM 6200B-13 ug/L 8
002 MW-2 Aqueous Diisopropyl ether (IPE)SM 6200B-210 ug/L 8
002 MW-2 Aqueous Ethylbenzene SM 6200B-16 ug/L 8
002 MW-2 Aqueous Isopropylbenzene SM 6200B-10 ug/L 8
002 MW-2 Aqueous Methyl tertiary butyl ether SM 6200B-140 ug/L 8
002 MW-2 Aqueous Naphthalene SM 6200B-22 ug/L 8
002 MW-2 Aqueous n-Propylbenzene SM 6200B-10 ug/L 8
002 MW-2 Aqueous Toluene SM 6200B-4.4 ug/L 9
002 MW-2 Aqueous 1,2,4-Trimethylbenzene SM 6200B-3.3 ug/L 9
002 MW-2 Aqueous m+p - Xylenes SM 6200B-8.0 ug/L 9
003 MW-3 Aqueous Benzene SM 6200B-3300 ug/L 10
003 MW-3 Aqueous 1,2-Dichloroethane SM 6200B-180 ug/L 10
003 MW-3 Aqueous Diisopropyl ether (IPE)SM 6200B-2600 ug/L 10
003 MW-3 Aqueous Ethylbenzene SM 6200B-400 ug/L 10
003 MW-3 Aqueous Isopropylbenzene SM 6200B-44 ug/L 10
003 MW-3 Aqueous Methyl tertiary butyl ether SM 6200B-1300 ug/L 10
003 MW-3 Aqueous Naphthalene SM 6200B-190 ug/L 10
003 MW-3 Aqueous n-Propylbenzene SM 6200B-87 ug/L 10
003 MW-3 Aqueous Toluene SM 6200B-100 ug/L 11
003 MW-3 Aqueous 1,3,5-Trimethylbenzene SM 6200B-150 ug/L 11
003 MW-3 Aqueous 1,2,4-Trimethylbenzene SM 6200B-520 ug/L 11
003 MW-3 Aqueous m+p - Xylenes SM 6200B-720 ug/L 11
003 MW-3 Aqueous o - Xylenes SM 6200B-64 ug/L 11
004 RW-1 Aqueous Benzene SM 6200B-2500 ug/L 12
004 RW-1 Aqueous 1,2-Dichloroethane SM 6200B-44 ug/L 12
004 RW-1 Aqueous Diisopropyl ether (IPE)SM 6200B-500 ug/L 12
004 RW-1 Aqueous Ethylbenzene SM 6200B-530 ug/L 12
004 RW-1 Aqueous Isopropylbenzene SM 6200B-35 ug/L 12
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Page 4 of 33
Detection Summary (Continued)
Lot Number: WC20017
Sample Sample ID Matrix Parameter Method Result Q Units Page
004 RW-1 Aqueous Methyl tertiary butyl ether SM 6200B-1100 ug/L 12
004 RW-1 Aqueous Naphthalene SM 6200B-180 ug/L 12
004 RW-1 Aqueous n-Propylbenzene SM 6200B-88 ug/L 12
004 RW-1 Aqueous Toluene SM 6200B-130 ug/L 13
004 RW-1 Aqueous 1,3,5-Trimethylbenzene SM 6200B-140 ug/L 13
004 RW-1 Aqueous 1,2,4-Trimethylbenzene SM 6200B-560 ug/L 13
004 RW-1 Aqueous m+p - Xylenes SM 6200B-1500 ug/L 13
004 RW-1 Aqueous o - Xylenes SM 6200B-81 ug/L 13
007 WSW-2 Aqueous Methyl tertiary butyl ether SM 6200B-2.1 ug/L 16
(52 detections)
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Page 5 of 33
Volatile Organic Compounds by GC/MS
Description:Matrix:
Date Received:
Client:Laboratory ID:
Date Sampled:
Terracon Consultants, Inc.
MW-1
WC20017-001
03/19/2021 1135
03/20/2021
Aqueous
Project Name: Erect Grocery
Project Number: 70207596
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 SM 6200B-SM 6200B-2011 50 03/27/2021 0529 DJG 87078
AnalyticalCAS
Parameter Number Method Result Q LOQ Units Run DL
Benzene 71-43-2 SM 6200B-2011 4800 1ug/L2025
Bromobenzene 108-86-1 SM 6200B-2011 ND 1ug/L2025
Bromochloromethane 74-97-5 SM 6200B-2011 ND 1ug/L2025
Bromodichloromethane 75-27-4 SM 6200B-2011 ND 1ug/L2025
Bromoform 75-25-2 SM 6200B-2011 ND 1ug/L2025
Bromomethane (Methyl bromide)74-83-9 SM 6200B-2011 ND 1ug/L2025
n-Butylbenzene 104-51-8 SM 6200B-2011 ND 1ug/L2025
sec-Butylbenzene 135-98-8 SM 6200B-2011 ND 1ug/L2025
tert-Butylbenzene 98-06-6 SM 6200B-2011 ND 1ug/L2025
Carbon tetrachloride 56-23-5 SM 6200B-2011 ND 1ug/L2025
Chlorobenzene 108-90-7 SM 6200B-2011 ND 1ug/L2025
Chloroethane 75-00-3 SM 6200B-2011 ND 1ug/L2025
Chloroform 67-66-3 SM 6200B-2011 ND 1ug/L2025
Chloromethane (Methyl chloride)74-87-3 SM 6200B-2011 ND 1ug/L2025
2-Chlorotoluene 95-49-8 SM 6200B-2011 ND 1ug/L2025
4-Chlorotoluene 106-43-4 SM 6200B-2011 ND 1ug/L2025
Dibromochloromethane 124-48-1 SM 6200B-2011 ND 1ug/L2025
1,2-Dibromoethane (EDB)106-93-4 SM 6200B-2011 ND 1ug/L2025
Dibromomethane (Methylene bromide)74-95-3 SM 6200B-2011 ND 1ug/L2025
1,2-Dichlorobenzene 95-50-1 SM 6200B-2011 ND 1ug/L2025
1,3-Dichlorobenzene 541-73-1 SM 6200B-2011 ND 1ug/L2025
1,4-Dichlorobenzene 106-46-7 SM 6200B-2011 ND 1ug/L2025
Dichlorodifluoromethane 75-71-8 SM 6200B-2011 ND 1ug/L2025
1,1-Dichloroethane 75-34-3 SM 6200B-2011 ND 1ug/L2025
1,2-Dichloroethane 107-06-2 SM 6200B-2011 51 1ug/L2025
1,1-Dichloroethene 75-35-4 SM 6200B-2011 ND 1ug/L2025
cis-1,2-Dichloroethene 156-59-2 SM 6200B-2011 ND 1ug/L2025
trans-1,2-Dichloroethene 156-60-5 SM 6200B-2011 ND 1ug/L2025
1,2-Dichloropropane 78-87-5 SM 6200B-2011 ND 1ug/L2025
1,3-Dichloropropane 142-28-9 SM 6200B-2011 ND 1ug/L2025
2,2-Dichloropropane 594-20-7 SM 6200B-2011 ND 1ug/L2025
1,1-Dichloropropene 563-58-6 SM 6200B-2011 ND 1ug/L2025
cis-1,3-Dichloropropene 10061-01-5 SM 6200B-2011 ND 1ug/L2025
trans-1,3-Dichloropropene 10061-02-6 SM 6200B-2011 ND 1ug/L2025
Diisopropyl ether (IPE)108-20-3 SM 6200B-2011 600 1ug/L2025
Ethylbenzene 100-41-4 SM 6200B-2011 910 1ug/L2025
Hexachlorobutadiene 87-68-3 SM 6200B-2011 ND 1ug/L2025
Isopropylbenzene (Cumene)98-82-8 SM 6200B-2011 51 1ug/L2025
p-Isopropyltoluene (p-Cymene)99-87-6 SM 6200B-2011 ND 1ug/L2025
Methyl tertiary butyl ether (MTBE)1634-04-4 SM 6200B-2011 1100 1ug/L2025
Methylene chloride 75-09-2 SM 6200B-2011 ND 1ug/L2025
Naphthalene 91-20-3 SM 6200B-2011 270 1ug/L2025
n-Propylbenzene 103-65-1 SM 6200B-2011 110 1ug/L2025
Styrene 100-42-5 SM 6200B-2011 ND 1ug/L2025
J = Estimated result < LOQ and > DL_
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range
P = The RPD between two GC columns exceeds 40%ND = Not detected at or above the DL N = Recovery is out of criteria
H = Out of holding time
Q = Surrogate failure
L = LCS/LCSD failure
S = MS/MSD failure
DL = Detection Limit
W = Reported on wet weight basis
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Page 6 of 33
Volatile Organic Compounds by GC/MS
Description:Matrix:
Date Received:
Client:Laboratory ID:
Date Sampled:
Terracon Consultants, Inc.
MW-1
WC20017-001
03/19/2021 1135
03/20/2021
Aqueous
Project Name: Erect Grocery
Project Number: 70207596
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 SM 6200B-SM 6200B-2011 50 03/27/2021 0529 DJG 87078
AnalyticalCAS
Parameter Number Method Result Q LOQ Units Run DL
1,1,1,2-Tetrachloroethane 630-20-6 SM 6200B-2011 ND 1ug/L2025
1,1,2,2-Tetrachloroethane 79-34-5 SM 6200B-2011 ND 1ug/L2025
Tetrachloroethene 127-18-4 SM 6200B-2011 ND 1ug/L2025
Toluene 108-88-3 SM 6200B-2011 2300 1ug/L2025
1,1,2-Trichloro-1,2,2-Trifluoroethane 76-13-1 SM 6200B-2011 ND 1ug/L2025
1,2,3-Trichlorobenzene 87-61-6 SM 6200B-2011 ND 1ug/L2025
1,2,4-Trichlorobenzene 120-82-1 SM 6200B-2011 ND 1ug/L2025
1,1,1-Trichloroethane 71-55-6 SM 6200B-2011 ND 1ug/L2025
1,1,2-Trichloroethane 79-00-5 SM 6200B-2011 ND 1ug/L2025
Trichloroethene 79-01-6 SM 6200B-2011 ND 1ug/L2025
Trichlorofluoromethane 75-69-4 SM 6200B-2011 ND 1ug/L2025
1,2,3-Trichloropropane 96-18-4 SM 6200B-2011 ND 1ug/L2025
1,3,5-Trimethylbenzene (Mesitylene)108-67-8 SM 6200B-2011 210 1ug/L2025
1,2,4-Trimethylbenzene 95-63-6 SM 6200B-2011 840 1ug/L2025
Vinyl chloride 75-01-4 SM 6200B-2011 ND 1ug/L2025
m+p - Xylenes 179601-23-1 SM 6200B-2011 2900 1ug/L2025
o - Xylenes 95-47-6 SM 6200B-2011 840 1ug/L2025
AcceptanceRun 1
Surrogate Q % Recovery Limits
1,2-Dichloroethane-d4 83 70-130
Bromofluorobenzene 101 70-130
Toluene-d8 89 70-130
J = Estimated result < LOQ and > DL_
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range
P = The RPD between two GC columns exceeds 40%ND = Not detected at or above the DL N = Recovery is out of criteria
H = Out of holding time
Q = Surrogate failure
L = LCS/LCSD failure
S = MS/MSD failure
DL = Detection Limit
W = Reported on wet weight basis
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Page 7 of 33
Volatile Organic Compounds by GC/MS
Description:Matrix:
Date Received:
Client:Laboratory ID:
Date Sampled:
Terracon Consultants, Inc.
MW-2
WC20017-002
03/19/2021 1045
03/20/2021
Aqueous
Project Name: Erect Grocery
Project Number: 70207596
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
2 SM 6200B-SM 6200B-2011 5 03/30/2021 2002 JDF 87386
AnalyticalCAS
Parameter Number Method Result Q LOQ Units Run DL
Benzene 71-43-2 SM 6200B-2011 140 2ug/L2.02.5
Bromobenzene 108-86-1 SM 6200B-2011 ND 2ug/L2.02.5
Bromochloromethane 74-97-5 SM 6200B-2011 ND 2ug/L2.02.5
Bromodichloromethane 75-27-4 SM 6200B-2011 ND 2ug/L2.02.5
Bromoform 75-25-2 SM 6200B-2011 ND 2ug/L2.02.5
Bromomethane (Methyl bromide)74-83-9 SM 6200B-2011 ND 2ug/L2.02.5
n-Butylbenzene 104-51-8 SM 6200B-2011 3.0 2ug/L2.02.5
sec-Butylbenzene 135-98-8 SM 6200B-2011 ND 2ug/L2.02.5
tert-Butylbenzene 98-06-6 SM 6200B-2011 ND 2ug/L2.02.5
Carbon tetrachloride 56-23-5 SM 6200B-2011 ND 2ug/L2.02.5
Chlorobenzene 108-90-7 SM 6200B-2011 ND 2ug/L2.02.5
Chloroethane 75-00-3 SM 6200B-2011 ND 2ug/L2.02.5
Chloroform 67-66-3 SM 6200B-2011 ND 2ug/L2.02.5
Chloromethane (Methyl chloride)74-87-3 SM 6200B-2011 ND 2ug/L2.02.5
2-Chlorotoluene 95-49-8 SM 6200B-2011 ND 2ug/L2.02.5
4-Chlorotoluene 106-43-4 SM 6200B-2011 ND 2ug/L2.02.5
Dibromochloromethane 124-48-1 SM 6200B-2011 ND 2ug/L2.02.5
1,2-Dibromoethane (EDB)106-93-4 SM 6200B-2011 ND 2ug/L2.02.5
Dibromomethane (Methylene bromide)74-95-3 SM 6200B-2011 ND 2ug/L2.02.5
1,2-Dichlorobenzene 95-50-1 SM 6200B-2011 ND 2ug/L2.02.5
1,3-Dichlorobenzene 541-73-1 SM 6200B-2011 ND 2ug/L2.02.5
1,4-Dichlorobenzene 106-46-7 SM 6200B-2011 ND 2ug/L2.02.5
Dichlorodifluoromethane 75-71-8 SM 6200B-2011 ND 2ug/L2.02.5
1,1-Dichloroethane 75-34-3 SM 6200B-2011 ND 2ug/L2.02.5
1,2-Dichloroethane 107-06-2 SM 6200B-2011 13 2ug/L2.02.5
1,1-Dichloroethene 75-35-4 SM 6200B-2011 ND 2ug/L2.02.5
cis-1,2-Dichloroethene 156-59-2 SM 6200B-2011 ND 2ug/L2.02.5
trans-1,2-Dichloroethene 156-60-5 SM 6200B-2011 ND 2ug/L2.02.5
1,2-Dichloropropane 78-87-5 SM 6200B-2011 ND 2ug/L2.02.5
1,3-Dichloropropane 142-28-9 SM 6200B-2011 ND 2ug/L2.02.5
2,2-Dichloropropane 594-20-7 SM 6200B-2011 ND 2ug/L2.02.5
1,1-Dichloropropene 563-58-6 SM 6200B-2011 ND 2ug/L2.02.5
cis-1,3-Dichloropropene 10061-01-5 SM 6200B-2011 ND 2ug/L2.02.5
trans-1,3-Dichloropropene 10061-02-6 SM 6200B-2011 ND 2ug/L2.02.5
Diisopropyl ether (IPE)108-20-3 SM 6200B-2011 210 2ug/L2.02.5
Ethylbenzene 100-41-4 SM 6200B-2011 16 2ug/L2.02.5
Hexachlorobutadiene 87-68-3 SM 6200B-2011 ND 2ug/L2.02.5
Isopropylbenzene (Cumene)98-82-8 SM 6200B-2011 10 2ug/L2.02.5
p-Isopropyltoluene (p-Cymene)99-87-6 SM 6200B-2011 ND 2ug/L2.02.5
Methyl tertiary butyl ether (MTBE)1634-04-4 SM 6200B-2011 140 2ug/L2.02.5
Methylene chloride 75-09-2 SM 6200B-2011 ND 2ug/L2.02.5
Naphthalene 91-20-3 SM 6200B-2011 22 2ug/L2.02.5
n-Propylbenzene 103-65-1 SM 6200B-2011 10 2ug/L2.02.5
Styrene 100-42-5 SM 6200B-2011 ND 2ug/L2.02.5
J = Estimated result < LOQ and > DL_
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range
P = The RPD between two GC columns exceeds 40%ND = Not detected at or above the DL N = Recovery is out of criteria
H = Out of holding time
Q = Surrogate failure
L = LCS/LCSD failure
S = MS/MSD failure
DL = Detection Limit
W = Reported on wet weight basis
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Page 8 of 33
Volatile Organic Compounds by GC/MS
Description:Matrix:
Date Received:
Client:Laboratory ID:
Date Sampled:
Terracon Consultants, Inc.
MW-2
WC20017-002
03/19/2021 1045
03/20/2021
Aqueous
Project Name: Erect Grocery
Project Number: 70207596
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
2 SM 6200B-SM 6200B-2011 5 03/30/2021 2002 JDF 87386
AnalyticalCAS
Parameter Number Method Result Q LOQ Units Run DL
1,1,1,2-Tetrachloroethane 630-20-6 SM 6200B-2011 ND 2ug/L2.02.5
1,1,2,2-Tetrachloroethane 79-34-5 SM 6200B-2011 ND 2ug/L2.02.5
Tetrachloroethene 127-18-4 SM 6200B-2011 ND 2ug/L2.02.5
Toluene 108-88-3 SM 6200B-2011 4.4 2ug/L2.02.5
1,1,2-Trichloro-1,2,2-Trifluoroethane 76-13-1 SM 6200B-2011 ND 2ug/L2.02.5
1,2,3-Trichlorobenzene 87-61-6 SM 6200B-2011 ND 2ug/L2.02.5
1,2,4-Trichlorobenzene 120-82-1 SM 6200B-2011 ND 2ug/L2.02.5
1,1,1-Trichloroethane 71-55-6 SM 6200B-2011 ND 2ug/L2.02.5
1,1,2-Trichloroethane 79-00-5 SM 6200B-2011 ND 2ug/L2.02.5
Trichloroethene 79-01-6 SM 6200B-2011 ND 2ug/L2.02.5
Trichlorofluoromethane 75-69-4 SM 6200B-2011 ND 2ug/L2.02.5
1,2,3-Trichloropropane 96-18-4 SM 6200B-2011 ND 2ug/L2.02.5
1,3,5-Trimethylbenzene (Mesitylene)108-67-8 SM 6200B-2011 ND 2ug/L2.02.5
1,2,4-Trimethylbenzene 95-63-6 SM 6200B-2011 3.3 2ug/L2.02.5
Vinyl chloride 75-01-4 SM 6200B-2011 ND 2ug/L2.02.5
m+p - Xylenes 179601-23-1 SM 6200B-2011 8.0 2ug/L2.02.5
o - Xylenes 95-47-6 SM 6200B-2011 ND 2ug/L2.02.5
AcceptanceRun 2
Surrogate Q % Recovery Limits
1,2-Dichloroethane-d4 102 70-130
Bromofluorobenzene 104 70-130
Toluene-d8 106 70-130
J = Estimated result < LOQ and > DL_
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range
P = The RPD between two GC columns exceeds 40%ND = Not detected at or above the DL N = Recovery is out of criteria
H = Out of holding time
Q = Surrogate failure
L = LCS/LCSD failure
S = MS/MSD failure
DL = Detection Limit
W = Reported on wet weight basis
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Page 9 of 33
Volatile Organic Compounds by GC/MS
Description:Matrix:
Date Received:
Client:Laboratory ID:
Date Sampled:
Terracon Consultants, Inc.
MW-3
WC20017-003
03/19/2021 1040
03/20/2021
Aqueous
Project Name: Erect Grocery
Project Number: 70207596
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 SM 6200B-SM 6200B-2011 50 03/27/2021 0554 DJG 87078
AnalyticalCAS
Parameter Number Method Result Q LOQ Units Run DL
Benzene 71-43-2 SM 6200B-2011 3300 1ug/L2025
Bromobenzene 108-86-1 SM 6200B-2011 ND 1ug/L2025
Bromochloromethane 74-97-5 SM 6200B-2011 ND 1ug/L2025
Bromodichloromethane 75-27-4 SM 6200B-2011 ND 1ug/L2025
Bromoform 75-25-2 SM 6200B-2011 ND 1ug/L2025
Bromomethane (Methyl bromide)74-83-9 SM 6200B-2011 ND 1ug/L2025
n-Butylbenzene 104-51-8 SM 6200B-2011 ND 1ug/L2025
sec-Butylbenzene 135-98-8 SM 6200B-2011 ND 1ug/L2025
tert-Butylbenzene 98-06-6 SM 6200B-2011 ND 1ug/L2025
Carbon tetrachloride 56-23-5 SM 6200B-2011 ND 1ug/L2025
Chlorobenzene 108-90-7 SM 6200B-2011 ND 1ug/L2025
Chloroethane 75-00-3 SM 6200B-2011 ND 1ug/L2025
Chloroform 67-66-3 SM 6200B-2011 ND 1ug/L2025
Chloromethane (Methyl chloride)74-87-3 SM 6200B-2011 ND 1ug/L2025
2-Chlorotoluene 95-49-8 SM 6200B-2011 ND 1ug/L2025
4-Chlorotoluene 106-43-4 SM 6200B-2011 ND 1ug/L2025
Dibromochloromethane 124-48-1 SM 6200B-2011 ND 1ug/L2025
1,2-Dibromoethane (EDB)106-93-4 SM 6200B-2011 ND 1ug/L2025
Dibromomethane (Methylene bromide)74-95-3 SM 6200B-2011 ND 1ug/L2025
1,2-Dichlorobenzene 95-50-1 SM 6200B-2011 ND 1ug/L2025
1,3-Dichlorobenzene 541-73-1 SM 6200B-2011 ND 1ug/L2025
1,4-Dichlorobenzene 106-46-7 SM 6200B-2011 ND 1ug/L2025
Dichlorodifluoromethane 75-71-8 SM 6200B-2011 ND 1ug/L2025
1,1-Dichloroethane 75-34-3 SM 6200B-2011 ND 1ug/L2025
1,2-Dichloroethane 107-06-2 SM 6200B-2011 180 1ug/L2025
1,1-Dichloroethene 75-35-4 SM 6200B-2011 ND 1ug/L2025
cis-1,2-Dichloroethene 156-59-2 SM 6200B-2011 ND 1ug/L2025
trans-1,2-Dichloroethene 156-60-5 SM 6200B-2011 ND 1ug/L2025
1,2-Dichloropropane 78-87-5 SM 6200B-2011 ND 1ug/L2025
1,3-Dichloropropane 142-28-9 SM 6200B-2011 ND 1ug/L2025
2,2-Dichloropropane 594-20-7 SM 6200B-2011 ND 1ug/L2025
1,1-Dichloropropene 563-58-6 SM 6200B-2011 ND 1ug/L2025
cis-1,3-Dichloropropene 10061-01-5 SM 6200B-2011 ND 1ug/L2025
trans-1,3-Dichloropropene 10061-02-6 SM 6200B-2011 ND 1ug/L2025
Diisopropyl ether (IPE)108-20-3 SM 6200B-2011 2600 1ug/L2025
Ethylbenzene 100-41-4 SM 6200B-2011 400 1ug/L2025
Hexachlorobutadiene 87-68-3 SM 6200B-2011 ND 1ug/L2025
Isopropylbenzene (Cumene)98-82-8 SM 6200B-2011 44 1ug/L2025
p-Isopropyltoluene (p-Cymene)99-87-6 SM 6200B-2011 ND 1ug/L2025
Methyl tertiary butyl ether (MTBE)1634-04-4 SM 6200B-2011 1300 1ug/L2025
Methylene chloride 75-09-2 SM 6200B-2011 ND 1ug/L2025
Naphthalene 91-20-3 SM 6200B-2011 190 1ug/L2025
n-Propylbenzene 103-65-1 SM 6200B-2011 87 1ug/L2025
Styrene 100-42-5 SM 6200B-2011 ND 1ug/L2025
J = Estimated result < LOQ and > DL_
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range
P = The RPD between two GC columns exceeds 40%ND = Not detected at or above the DL N = Recovery is out of criteria
H = Out of holding time
Q = Surrogate failure
L = LCS/LCSD failure
S = MS/MSD failure
DL = Detection Limit
W = Reported on wet weight basis
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Page 10 of 33
Volatile Organic Compounds by GC/MS
Description:Matrix:
Date Received:
Client:Laboratory ID:
Date Sampled:
Terracon Consultants, Inc.
MW-3
WC20017-003
03/19/2021 1040
03/20/2021
Aqueous
Project Name: Erect Grocery
Project Number: 70207596
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 SM 6200B-SM 6200B-2011 50 03/27/2021 0554 DJG 87078
AnalyticalCAS
Parameter Number Method Result Q LOQ Units Run DL
1,1,1,2-Tetrachloroethane 630-20-6 SM 6200B-2011 ND 1ug/L2025
1,1,2,2-Tetrachloroethane 79-34-5 SM 6200B-2011 ND 1ug/L2025
Tetrachloroethene 127-18-4 SM 6200B-2011 ND 1ug/L2025
Toluene 108-88-3 SM 6200B-2011 100 1ug/L2025
1,1,2-Trichloro-1,2,2-Trifluoroethane 76-13-1 SM 6200B-2011 ND 1ug/L2025
1,2,3-Trichlorobenzene 87-61-6 SM 6200B-2011 ND 1ug/L2025
1,2,4-Trichlorobenzene 120-82-1 SM 6200B-2011 ND 1ug/L2025
1,1,1-Trichloroethane 71-55-6 SM 6200B-2011 ND 1ug/L2025
1,1,2-Trichloroethane 79-00-5 SM 6200B-2011 ND 1ug/L2025
Trichloroethene 79-01-6 SM 6200B-2011 ND 1ug/L2025
Trichlorofluoromethane 75-69-4 SM 6200B-2011 ND 1ug/L2025
1,2,3-Trichloropropane 96-18-4 SM 6200B-2011 ND 1ug/L2025
1,3,5-Trimethylbenzene (Mesitylene)108-67-8 SM 6200B-2011 150 1ug/L2025
1,2,4-Trimethylbenzene 95-63-6 SM 6200B-2011 520 1ug/L2025
Vinyl chloride 75-01-4 SM 6200B-2011 ND 1ug/L2025
m+p - Xylenes 179601-23-1 SM 6200B-2011 720 1ug/L2025
o - Xylenes 95-47-6 SM 6200B-2011 64 1ug/L2025
AcceptanceRun 1
Surrogate Q % Recovery Limits
1,2-Dichloroethane-d4 82 70-130
Bromofluorobenzene 102 70-130
Toluene-d8 90 70-130
J = Estimated result < LOQ and > DL_
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range
P = The RPD between two GC columns exceeds 40%ND = Not detected at or above the DL N = Recovery is out of criteria
H = Out of holding time
Q = Surrogate failure
L = LCS/LCSD failure
S = MS/MSD failure
DL = Detection Limit
W = Reported on wet weight basis
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Page 11 of 33
Volatile Organic Compounds by GC/MS
Description:Matrix:
Date Received:
Client:Laboratory ID:
Date Sampled:
Terracon Consultants, Inc.
RW-1
WC20017-004
03/19/2021 1140
03/20/2021
Aqueous
Project Name: Erect Grocery
Project Number: 70207596
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 SM 6200B-SM 6200B-2011 50 03/27/2021 0619 DJG 87078
AnalyticalCAS
Parameter Number Method Result Q LOQ Units Run DL
Benzene 71-43-2 SM 6200B-2011 2500 1ug/L2025
Bromobenzene 108-86-1 SM 6200B-2011 ND 1ug/L2025
Bromochloromethane 74-97-5 SM 6200B-2011 ND 1ug/L2025
Bromodichloromethane 75-27-4 SM 6200B-2011 ND 1ug/L2025
Bromoform 75-25-2 SM 6200B-2011 ND 1ug/L2025
Bromomethane (Methyl bromide)74-83-9 SM 6200B-2011 ND 1ug/L2025
n-Butylbenzene 104-51-8 SM 6200B-2011 ND 1ug/L2025
sec-Butylbenzene 135-98-8 SM 6200B-2011 ND 1ug/L2025
tert-Butylbenzene 98-06-6 SM 6200B-2011 ND 1ug/L2025
Carbon tetrachloride 56-23-5 SM 6200B-2011 ND 1ug/L2025
Chlorobenzene 108-90-7 SM 6200B-2011 ND 1ug/L2025
Chloroethane 75-00-3 SM 6200B-2011 ND 1ug/L2025
Chloroform 67-66-3 SM 6200B-2011 ND 1ug/L2025
Chloromethane (Methyl chloride)74-87-3 SM 6200B-2011 ND 1ug/L2025
2-Chlorotoluene 95-49-8 SM 6200B-2011 ND 1ug/L2025
4-Chlorotoluene 106-43-4 SM 6200B-2011 ND 1ug/L2025
Dibromochloromethane 124-48-1 SM 6200B-2011 ND 1ug/L2025
1,2-Dibromoethane (EDB)106-93-4 SM 6200B-2011 ND 1ug/L2025
Dibromomethane (Methylene bromide)74-95-3 SM 6200B-2011 ND 1ug/L2025
1,2-Dichlorobenzene 95-50-1 SM 6200B-2011 ND 1ug/L2025
1,3-Dichlorobenzene 541-73-1 SM 6200B-2011 ND 1ug/L2025
1,4-Dichlorobenzene 106-46-7 SM 6200B-2011 ND 1ug/L2025
Dichlorodifluoromethane 75-71-8 SM 6200B-2011 ND 1ug/L2025
1,1-Dichloroethane 75-34-3 SM 6200B-2011 ND 1ug/L2025
1,2-Dichloroethane 107-06-2 SM 6200B-2011 44 1ug/L2025
1,1-Dichloroethene 75-35-4 SM 6200B-2011 ND 1ug/L2025
cis-1,2-Dichloroethene 156-59-2 SM 6200B-2011 ND 1ug/L2025
trans-1,2-Dichloroethene 156-60-5 SM 6200B-2011 ND 1ug/L2025
1,2-Dichloropropane 78-87-5 SM 6200B-2011 ND 1ug/L2025
1,3-Dichloropropane 142-28-9 SM 6200B-2011 ND 1ug/L2025
2,2-Dichloropropane 594-20-7 SM 6200B-2011 ND 1ug/L2025
1,1-Dichloropropene 563-58-6 SM 6200B-2011 ND 1ug/L2025
cis-1,3-Dichloropropene 10061-01-5 SM 6200B-2011 ND 1ug/L2025
trans-1,3-Dichloropropene 10061-02-6 SM 6200B-2011 ND 1ug/L2025
Diisopropyl ether (IPE)108-20-3 SM 6200B-2011 500 1ug/L2025
Ethylbenzene 100-41-4 SM 6200B-2011 530 1ug/L2025
Hexachlorobutadiene 87-68-3 SM 6200B-2011 ND 1ug/L2025
Isopropylbenzene (Cumene)98-82-8 SM 6200B-2011 35 1ug/L2025
p-Isopropyltoluene (p-Cymene)99-87-6 SM 6200B-2011 ND 1ug/L2025
Methyl tertiary butyl ether (MTBE)1634-04-4 SM 6200B-2011 1100 1ug/L2025
Methylene chloride 75-09-2 SM 6200B-2011 ND 1ug/L2025
Naphthalene 91-20-3 SM 6200B-2011 180 1ug/L2025
n-Propylbenzene 103-65-1 SM 6200B-2011 88 1ug/L2025
Styrene 100-42-5 SM 6200B-2011 ND 1ug/L2025
J = Estimated result < LOQ and > DL_
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range
P = The RPD between two GC columns exceeds 40%ND = Not detected at or above the DL N = Recovery is out of criteria
H = Out of holding time
Q = Surrogate failure
L = LCS/LCSD failure
S = MS/MSD failure
DL = Detection Limit
W = Reported on wet weight basis
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Page 12 of 33
Volatile Organic Compounds by GC/MS
Description:Matrix:
Date Received:
Client:Laboratory ID:
Date Sampled:
Terracon Consultants, Inc.
RW-1
WC20017-004
03/19/2021 1140
03/20/2021
Aqueous
Project Name: Erect Grocery
Project Number: 70207596
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 SM 6200B-SM 6200B-2011 50 03/27/2021 0619 DJG 87078
AnalyticalCAS
Parameter Number Method Result Q LOQ Units Run DL
1,1,1,2-Tetrachloroethane 630-20-6 SM 6200B-2011 ND 1ug/L2025
1,1,2,2-Tetrachloroethane 79-34-5 SM 6200B-2011 ND 1ug/L2025
Tetrachloroethene 127-18-4 SM 6200B-2011 ND 1ug/L2025
Toluene 108-88-3 SM 6200B-2011 130 1ug/L2025
1,1,2-Trichloro-1,2,2-Trifluoroethane 76-13-1 SM 6200B-2011 ND 1ug/L2025
1,2,3-Trichlorobenzene 87-61-6 SM 6200B-2011 ND 1ug/L2025
1,2,4-Trichlorobenzene 120-82-1 SM 6200B-2011 ND 1ug/L2025
1,1,1-Trichloroethane 71-55-6 SM 6200B-2011 ND 1ug/L2025
1,1,2-Trichloroethane 79-00-5 SM 6200B-2011 ND 1ug/L2025
Trichloroethene 79-01-6 SM 6200B-2011 ND 1ug/L2025
Trichlorofluoromethane 75-69-4 SM 6200B-2011 ND 1ug/L2025
1,2,3-Trichloropropane 96-18-4 SM 6200B-2011 ND 1ug/L2025
1,3,5-Trimethylbenzene (Mesitylene)108-67-8 SM 6200B-2011 140 1ug/L2025
1,2,4-Trimethylbenzene 95-63-6 SM 6200B-2011 560 1ug/L2025
Vinyl chloride 75-01-4 SM 6200B-2011 ND 1ug/L2025
m+p - Xylenes 179601-23-1 SM 6200B-2011 1500 1ug/L2025
o - Xylenes 95-47-6 SM 6200B-2011 81 1ug/L2025
AcceptanceRun 1
Surrogate Q % Recovery Limits
1,2-Dichloroethane-d4 83 70-130
Bromofluorobenzene 101 70-130
Toluene-d8 92 70-130
J = Estimated result < LOQ and > DL_
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range
P = The RPD between two GC columns exceeds 40%ND = Not detected at or above the DL N = Recovery is out of criteria
H = Out of holding time
Q = Surrogate failure
L = LCS/LCSD failure
S = MS/MSD failure
DL = Detection Limit
W = Reported on wet weight basis
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Page 13 of 33
Volatile Organic Compounds by GC/MS
Description:Matrix:
Date Received:
Client:Laboratory ID:
Date Sampled:
Terracon Consultants, Inc.
FB-01
WC20017-005
03/19/2021 1050
03/20/2021
Aqueous
Project Name: Erect Grocery
Project Number: 70207596
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 SM 6200B-SM 6200B-2011 1 03/27/2021 0143 CJL2 87072
AnalyticalCAS
Parameter Number Method Result Q LOQ Units Run DL
Benzene 71-43-2 SM 6200B-2011 ND 1ug/L0.400.50
Bromobenzene 108-86-1 SM 6200B-2011 ND 1ug/L0.400.50
Bromochloromethane 74-97-5 SM 6200B-2011 ND 1ug/L0.400.50
Bromodichloromethane 75-27-4 SM 6200B-2011 ND 1ug/L0.400.50
Bromoform 75-25-2 SM 6200B-2011 ND 1ug/L0.400.50
Bromomethane (Methyl bromide)74-83-9 SM 6200B-2011 ND 1ug/L0.400.50
n-Butylbenzene 104-51-8 SM 6200B-2011 ND 1ug/L0.400.50
sec-Butylbenzene 135-98-8 SM 6200B-2011 ND 1ug/L0.400.50
tert-Butylbenzene 98-06-6 SM 6200B-2011 ND 1ug/L0.400.50
Carbon tetrachloride 56-23-5 SM 6200B-2011 ND 1ug/L0.400.50
Chlorobenzene 108-90-7 SM 6200B-2011 ND 1ug/L0.400.50
Chloroethane 75-00-3 SM 6200B-2011 ND 1ug/L0.400.50
Chloroform 67-66-3 SM 6200B-2011 ND 1ug/L0.400.50
Chloromethane (Methyl chloride)74-87-3 SM 6200B-2011 ND 1ug/L0.400.50
2-Chlorotoluene 95-49-8 SM 6200B-2011 ND 1ug/L0.400.50
4-Chlorotoluene 106-43-4 SM 6200B-2011 ND 1ug/L0.400.50
Dibromochloromethane 124-48-1 SM 6200B-2011 ND 1ug/L0.400.50
1,2-Dibromoethane (EDB)106-93-4 SM 6200B-2011 ND 1ug/L0.400.50
Dibromomethane (Methylene bromide)74-95-3 SM 6200B-2011 ND 1ug/L0.400.50
1,2-Dichlorobenzene 95-50-1 SM 6200B-2011 ND 1ug/L0.400.50
1,3-Dichlorobenzene 541-73-1 SM 6200B-2011 ND 1ug/L0.400.50
1,4-Dichlorobenzene 106-46-7 SM 6200B-2011 ND 1ug/L0.400.50
Dichlorodifluoromethane 75-71-8 SM 6200B-2011 ND 1ug/L0.400.50
1,1-Dichloroethane 75-34-3 SM 6200B-2011 ND 1ug/L0.400.50
1,2-Dichloroethane 107-06-2 SM 6200B-2011 ND 1ug/L0.400.50
1,1-Dichloroethene 75-35-4 SM 6200B-2011 ND 1ug/L0.400.50
cis-1,2-Dichloroethene 156-59-2 SM 6200B-2011 ND 1ug/L0.400.50
trans-1,2-Dichloroethene 156-60-5 SM 6200B-2011 ND 1ug/L0.400.50
1,2-Dichloropropane 78-87-5 SM 6200B-2011 ND 1ug/L0.400.50
1,3-Dichloropropane 142-28-9 SM 6200B-2011 ND 1ug/L0.400.50
2,2-Dichloropropane 594-20-7 SM 6200B-2011 ND 1ug/L0.400.50
1,1-Dichloropropene 563-58-6 SM 6200B-2011 ND 1ug/L0.400.50
cis-1,3-Dichloropropene 10061-01-5 SM 6200B-2011 ND 1ug/L0.400.50
trans-1,3-Dichloropropene 10061-02-6 SM 6200B-2011 ND 1ug/L0.400.50
Diisopropyl ether (IPE)108-20-3 SM 6200B-2011 ND 1ug/L0.400.50
Ethylbenzene 100-41-4 SM 6200B-2011 ND 1ug/L0.400.50
Hexachlorobutadiene 87-68-3 SM 6200B-2011 ND 1ug/L0.400.50
Isopropylbenzene (Cumene)98-82-8 SM 6200B-2011 ND 1ug/L0.400.50
p-Isopropyltoluene (p-Cymene)99-87-6 SM 6200B-2011 ND 1ug/L0.400.50
Methyl tertiary butyl ether (MTBE)1634-04-4 SM 6200B-2011 ND 1ug/L0.400.50
Methylene chloride 75-09-2 SM 6200B-2011 ND 1ug/L0.400.50
Naphthalene 91-20-3 SM 6200B-2011 ND 1ug/L0.400.50
n-Propylbenzene 103-65-1 SM 6200B-2011 ND 1ug/L0.400.50
Styrene 100-42-5 SM 6200B-2011 ND 1ug/L0.400.50
J = Estimated result < LOQ and > DL_
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range
P = The RPD between two GC columns exceeds 40%ND = Not detected at or above the DL N = Recovery is out of criteria
H = Out of holding time
Q = Surrogate failure
L = LCS/LCSD failure
S = MS/MSD failure
DL = Detection Limit
W = Reported on wet weight basis
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Page 14 of 33
Volatile Organic Compounds by GC/MS
Description:Matrix:
Date Received:
Client:Laboratory ID:
Date Sampled:
Terracon Consultants, Inc.
FB-01
WC20017-005
03/19/2021 1050
03/20/2021
Aqueous
Project Name: Erect Grocery
Project Number: 70207596
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 SM 6200B-SM 6200B-2011 1 03/27/2021 0143 CJL2 87072
AnalyticalCAS
Parameter Number Method Result Q LOQ Units Run DL
1,1,1,2-Tetrachloroethane 630-20-6 SM 6200B-2011 ND 1ug/L0.400.50
1,1,2,2-Tetrachloroethane 79-34-5 SM 6200B-2011 ND 1ug/L0.400.50
Tetrachloroethene 127-18-4 SM 6200B-2011 ND 1ug/L0.400.50
Toluene 108-88-3 SM 6200B-2011 ND 1ug/L0.400.50
1,1,2-Trichloro-1,2,2-Trifluoroethane 76-13-1 SM 6200B-2011 ND 1ug/L0.400.50
1,2,3-Trichlorobenzene 87-61-6 SM 6200B-2011 ND 1ug/L0.400.50
1,2,4-Trichlorobenzene 120-82-1 SM 6200B-2011 ND 1ug/L0.400.50
1,1,1-Trichloroethane 71-55-6 SM 6200B-2011 ND 1ug/L0.400.50
1,1,2-Trichloroethane 79-00-5 SM 6200B-2011 ND 1ug/L0.400.50
Trichloroethene 79-01-6 SM 6200B-2011 ND 1ug/L0.400.50
Trichlorofluoromethane 75-69-4 SM 6200B-2011 ND 1ug/L0.400.50
1,2,3-Trichloropropane 96-18-4 SM 6200B-2011 ND 1ug/L0.400.50
1,3,5-Trimethylbenzene (Mesitylene)108-67-8 SM 6200B-2011 ND 1ug/L0.400.50
1,2,4-Trimethylbenzene 95-63-6 SM 6200B-2011 ND 1ug/L0.400.50
Vinyl chloride 75-01-4 SM 6200B-2011 ND 1ug/L0.400.50
m+p - Xylenes 179601-23-1 SM 6200B-2011 ND 1ug/L0.400.50
o - Xylenes 95-47-6 SM 6200B-2011 ND 1ug/L0.400.50
AcceptanceRun 1
Surrogate Q % Recovery Limits
1,2-Dichloroethane-d4 92 70-130
Bromofluorobenzene 107 70-130
Toluene-d8 105 70-130
J = Estimated result < LOQ and > DL_
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range
P = The RPD between two GC columns exceeds 40%ND = Not detected at or above the DL N = Recovery is out of criteria
H = Out of holding time
Q = Surrogate failure
L = LCS/LCSD failure
S = MS/MSD failure
DL = Detection Limit
W = Reported on wet weight basis
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Page 15 of 33
Volatile Organic Compounds by GC/MS
Description:Matrix:
Date Received:
Client:Laboratory ID:
Date Sampled:
Terracon Consultants, Inc.
WSW-2
WC20017-007
03/19/2021 1215
03/20/2021
Aqueous
Project Name: Erect Grocery
Project Number: 70207596
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 SM 6200B-SM 6200B-2011 1 03/27/2021 0347 CJL2 87072
AnalyticalCAS
Parameter Number Method Result Q LOQ Units Run DL
Benzene 71-43-2 SM 6200B-2011 ND 1ug/L0.400.50
Bromobenzene 108-86-1 SM 6200B-2011 ND 1ug/L0.400.50
Bromochloromethane 74-97-5 SM 6200B-2011 ND 1ug/L0.400.50
Bromodichloromethane 75-27-4 SM 6200B-2011 ND 1ug/L0.400.50
Bromoform 75-25-2 SM 6200B-2011 ND 1ug/L0.400.50
Bromomethane (Methyl bromide)74-83-9 SM 6200B-2011 ND 1ug/L0.400.50
n-Butylbenzene 104-51-8 SM 6200B-2011 ND 1ug/L0.400.50
sec-Butylbenzene 135-98-8 SM 6200B-2011 ND 1ug/L0.400.50
tert-Butylbenzene 98-06-6 SM 6200B-2011 ND 1ug/L0.400.50
Carbon tetrachloride 56-23-5 SM 6200B-2011 ND 1ug/L0.400.50
Chlorobenzene 108-90-7 SM 6200B-2011 ND 1ug/L0.400.50
Chloroethane 75-00-3 SM 6200B-2011 ND 1ug/L0.400.50
Chloroform 67-66-3 SM 6200B-2011 ND 1ug/L0.400.50
Chloromethane (Methyl chloride)74-87-3 SM 6200B-2011 ND 1ug/L0.400.50
2-Chlorotoluene 95-49-8 SM 6200B-2011 ND 1ug/L0.400.50
4-Chlorotoluene 106-43-4 SM 6200B-2011 ND 1ug/L0.400.50
Dibromochloromethane 124-48-1 SM 6200B-2011 ND 1ug/L0.400.50
1,2-Dibromoethane (EDB)106-93-4 SM 6200B-2011 ND 1ug/L0.400.50
Dibromomethane (Methylene bromide)74-95-3 SM 6200B-2011 ND 1ug/L0.400.50
1,2-Dichlorobenzene 95-50-1 SM 6200B-2011 ND 1ug/L0.400.50
1,3-Dichlorobenzene 541-73-1 SM 6200B-2011 ND 1ug/L0.400.50
1,4-Dichlorobenzene 106-46-7 SM 6200B-2011 ND 1ug/L0.400.50
Dichlorodifluoromethane 75-71-8 SM 6200B-2011 ND 1ug/L0.400.50
1,1-Dichloroethane 75-34-3 SM 6200B-2011 ND 1ug/L0.400.50
1,2-Dichloroethane 107-06-2 SM 6200B-2011 ND 1ug/L0.400.50
1,1-Dichloroethene 75-35-4 SM 6200B-2011 ND 1ug/L0.400.50
cis-1,2-Dichloroethene 156-59-2 SM 6200B-2011 ND 1ug/L0.400.50
trans-1,2-Dichloroethene 156-60-5 SM 6200B-2011 ND 1ug/L0.400.50
1,2-Dichloropropane 78-87-5 SM 6200B-2011 ND 1ug/L0.400.50
1,3-Dichloropropane 142-28-9 SM 6200B-2011 ND 1ug/L0.400.50
2,2-Dichloropropane 594-20-7 SM 6200B-2011 ND 1ug/L0.400.50
1,1-Dichloropropene 563-58-6 SM 6200B-2011 ND 1ug/L0.400.50
cis-1,3-Dichloropropene 10061-01-5 SM 6200B-2011 ND 1ug/L0.400.50
trans-1,3-Dichloropropene 10061-02-6 SM 6200B-2011 ND 1ug/L0.400.50
Diisopropyl ether (IPE)108-20-3 SM 6200B-2011 ND 1ug/L0.400.50
Ethylbenzene 100-41-4 SM 6200B-2011 ND 1ug/L0.400.50
Hexachlorobutadiene 87-68-3 SM 6200B-2011 ND 1ug/L0.400.50
Isopropylbenzene (Cumene)98-82-8 SM 6200B-2011 ND 1ug/L0.400.50
p-Isopropyltoluene (p-Cymene)99-87-6 SM 6200B-2011 ND 1ug/L0.400.50
Methyl tertiary butyl ether (MTBE)1634-04-4 SM 6200B-2011 2.1 1ug/L0.400.50
Methylene chloride 75-09-2 SM 6200B-2011 ND 1ug/L0.400.50
Naphthalene 91-20-3 SM 6200B-2011 ND 1ug/L0.400.50
n-Propylbenzene 103-65-1 SM 6200B-2011 ND 1ug/L0.400.50
Styrene 100-42-5 SM 6200B-2011 ND 1ug/L0.400.50
J = Estimated result < LOQ and > DL_
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range
P = The RPD between two GC columns exceeds 40%ND = Not detected at or above the DL N = Recovery is out of criteria
H = Out of holding time
Q = Surrogate failure
L = LCS/LCSD failure
S = MS/MSD failure
DL = Detection Limit
W = Reported on wet weight basis
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Page 16 of 33
Volatile Organic Compounds by GC/MS
Description:Matrix:
Date Received:
Client:Laboratory ID:
Date Sampled:
Terracon Consultants, Inc.
WSW-2
WC20017-007
03/19/2021 1215
03/20/2021
Aqueous
Project Name: Erect Grocery
Project Number: 70207596
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 SM 6200B-SM 6200B-2011 1 03/27/2021 0347 CJL2 87072
AnalyticalCAS
Parameter Number Method Result Q LOQ Units Run DL
1,1,1,2-Tetrachloroethane 630-20-6 SM 6200B-2011 ND 1ug/L0.400.50
1,1,2,2-Tetrachloroethane 79-34-5 SM 6200B-2011 ND 1ug/L0.400.50
Tetrachloroethene 127-18-4 SM 6200B-2011 ND 1ug/L0.400.50
Toluene 108-88-3 SM 6200B-2011 ND 1ug/L0.400.50
1,1,2-Trichloro-1,2,2-Trifluoroethane 76-13-1 SM 6200B-2011 ND 1ug/L0.400.50
1,2,3-Trichlorobenzene 87-61-6 SM 6200B-2011 ND 1ug/L0.400.50
1,2,4-Trichlorobenzene 120-82-1 SM 6200B-2011 ND 1ug/L0.400.50
1,1,1-Trichloroethane 71-55-6 SM 6200B-2011 ND 1ug/L0.400.50
1,1,2-Trichloroethane 79-00-5 SM 6200B-2011 ND 1ug/L0.400.50
Trichloroethene 79-01-6 SM 6200B-2011 ND 1ug/L0.400.50
Trichlorofluoromethane 75-69-4 SM 6200B-2011 ND 1ug/L0.400.50
1,2,3-Trichloropropane 96-18-4 SM 6200B-2011 ND 1ug/L0.400.50
1,3,5-Trimethylbenzene (Mesitylene)108-67-8 SM 6200B-2011 ND 1ug/L0.400.50
1,2,4-Trimethylbenzene 95-63-6 SM 6200B-2011 ND 1ug/L0.400.50
Vinyl chloride 75-01-4 SM 6200B-2011 ND 1ug/L0.400.50
m+p - Xylenes 179601-23-1 SM 6200B-2011 ND 1ug/L0.400.50
o - Xylenes 95-47-6 SM 6200B-2011 ND 1ug/L0.400.50
AcceptanceRun 1
Surrogate Q % Recovery Limits
1,2-Dichloroethane-d4 98 70-130
Bromofluorobenzene 107 70-130
Toluene-d8 108 70-130
J = Estimated result < LOQ and > DL_
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range
P = The RPD between two GC columns exceeds 40%ND = Not detected at or above the DL N = Recovery is out of criteria
H = Out of holding time
Q = Surrogate failure
L = LCS/LCSD failure
S = MS/MSD failure
DL = Detection Limit
W = Reported on wet weight basis
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Page 17 of 33
QC Summary
QC Data for Lot Number: WC20017
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Page 18 of 33
Volatile Organic Compounds by GC/MS - MB
Batch:Prep Method:
Sample ID:WQ87072-001
87072 SM 6200B-2011
Analytical Method:SM 6200B-2011
Matrix:Aqueous
Parameter Result Q LOQ DL Units Analysis DateDil
Benzene ND 03/27/2021 00290.50 0.40 ug/L1
Bromobenzene ND 03/27/2021 00290.50 0.40 ug/L1
Bromochloromethane ND 03/27/2021 00290.50 0.40 ug/L1
Bromodichloromethane ND 03/27/2021 00290.50 0.40 ug/L1
Bromoform ND 03/27/2021 00290.50 0.40 ug/L1
Bromomethane (Methyl bromide)ND 03/27/2021 00290.50 0.40 ug/L1
n-Butylbenzene ND 03/27/2021 00290.50 0.40 ug/L1
sec-Butylbenzene ND 03/27/2021 00290.50 0.40 ug/L1
tert-Butylbenzene ND 03/27/2021 00290.50 0.40 ug/L1
Carbon tetrachloride ND 03/27/2021 00290.50 0.40 ug/L1
Chlorobenzene ND 03/27/2021 00290.50 0.40 ug/L1
Chloroethane ND 03/27/2021 00290.50 0.40 ug/L1
Chloroform ND 03/27/2021 00290.50 0.40 ug/L1
Chloromethane (Methyl chloride)ND 03/27/2021 00290.50 0.40 ug/L1
2-Chlorotoluene ND 03/27/2021 00290.50 0.40 ug/L1
4-Chlorotoluene ND 03/27/2021 00290.50 0.40 ug/L1
Dibromochloromethane ND 03/27/2021 00290.50 0.40 ug/L1
1,2-Dibromoethane (EDB)ND 03/27/2021 00290.50 0.40 ug/L1
Dibromomethane (Methylene bromide)ND 03/27/2021 00290.50 0.40 ug/L1
1,2-Dichlorobenzene ND 03/27/2021 00290.50 0.40 ug/L1
1,3-Dichlorobenzene ND 03/27/2021 00290.50 0.40 ug/L1
1,4-Dichlorobenzene ND 03/27/2021 00290.50 0.40 ug/L1
Dichlorodifluoromethane ND 03/27/2021 00290.50 0.40 ug/L1
1,1-Dichloroethane ND 03/27/2021 00290.50 0.40 ug/L1
1,2-Dichloroethane ND 03/27/2021 00290.50 0.40 ug/L1
1,1-Dichloroethene ND 03/27/2021 00290.50 0.40 ug/L1
cis-1,2-Dichloroethene ND 03/27/2021 00290.50 0.40 ug/L1
trans-1,2-Dichloroethene ND 03/27/2021 00290.50 0.40 ug/L1
1,2-Dichloropropane ND 03/27/2021 00290.50 0.40 ug/L1
1,3-Dichloropropane ND 03/27/2021 00290.50 0.40 ug/L1
2,2-Dichloropropane ND 03/27/2021 00290.50 0.40 ug/L1
1,1-Dichloropropene ND 03/27/2021 00290.50 0.40 ug/L1
cis-1,3-Dichloropropene ND 03/27/2021 00290.50 0.40 ug/L1
trans-1,3-Dichloropropene ND 03/27/2021 00290.50 0.40 ug/L1
Diisopropyl ether (IPE)ND 03/27/2021 00290.50 0.40 ug/L1
Ethylbenzene ND 03/27/2021 00290.50 0.40 ug/L1
Hexachlorobutadiene ND 03/27/2021 00290.50 0.40 ug/L1
Isopropylbenzene (Cumene)ND 03/27/2021 00290.50 0.40 ug/L1
p-Isopropyltoluene (p-Cymene)ND 03/27/2021 00290.50 0.40 ug/L1
Methyl tertiary butyl ether (MTBE)ND 03/27/2021 00290.50 0.40 ug/L1
Methylene chloride ND 03/27/2021 00290.50 0.40 ug/L1
Naphthalene ND 03/27/2021 00290.50 0.40 ug/L1
n-Propylbenzene ND 03/27/2021 00290.50 0.40 ug/L1
Styrene ND 03/27/2021 00290.50 0.40 ug/L1
Note:Calculations are performed before rounding to avoid round-off errors in calculated results
LOQ = Limit of Quantitation ND = Not detected at or above the DL
J = Estimated result < LOQ and > DL
N = Recovery is out of criteria
P = The RPD between two GC columns exceeds 40%
+ = RPD is out of criteria
_DL = Detection Limit
* = RSD is out of criteria
QC Data for Lot Number: WC20017
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Page 19 of 33
Volatile Organic Compounds by GC/MS - MB
Batch:Prep Method:
Sample ID:WQ87072-001
87072 SM 6200B-2011
Analytical Method:SM 6200B-2011
Matrix:Aqueous
Parameter Result Q LOQ DL Units Analysis DateDil
1,1,1,2-Tetrachloroethane ND 03/27/2021 00290.50 0.40 ug/L1
1,1,2,2-Tetrachloroethane ND 03/27/2021 00290.50 0.40 ug/L1
Tetrachloroethene ND 03/27/2021 00290.50 0.40 ug/L1
Toluene ND 03/27/2021 00290.50 0.40 ug/L1
1,1,2-Trichloro-1,2,2-Trifluoroethane ND 03/27/2021 00290.50 0.40 ug/L1
1,2,3-Trichlorobenzene ND 03/27/2021 00290.50 0.40 ug/L1
1,2,4-Trichlorobenzene ND 03/27/2021 00290.50 0.40 ug/L1
1,1,1-Trichloroethane ND 03/27/2021 00290.50 0.40 ug/L1
1,1,2-Trichloroethane ND 03/27/2021 00290.50 0.40 ug/L1
Trichloroethene ND 03/27/2021 00290.50 0.40 ug/L1
Trichlorofluoromethane ND 03/27/2021 00290.50 0.40 ug/L1
1,2,3-Trichloropropane ND 03/27/2021 00290.50 0.40 ug/L1
1,3,5-Trimethylbenzene (Mesitylene)ND 03/27/2021 00290.50 0.40 ug/L1
1,2,4-Trimethylbenzene ND 03/27/2021 00290.50 0.40 ug/L1
Vinyl chloride ND 03/27/2021 00290.50 0.40 ug/L1
m+p - Xylenes ND 03/27/2021 00290.50 0.40 ug/L1
o - Xylenes ND 03/27/2021 00290.50 0.40 ug/L1
Surrogate Q % Rec Acceptance
Limit
1,2-Dichloroethane-d4 91 70-130
Bromofluorobenzene 108 70-130
Toluene-d8 109 70-130
Note:Calculations are performed before rounding to avoid round-off errors in calculated results
LOQ = Limit of Quantitation ND = Not detected at or above the DL
J = Estimated result < LOQ and > DL
N = Recovery is out of criteria
P = The RPD between two GC columns exceeds 40%
+ = RPD is out of criteria
_DL = Detection Limit
* = RSD is out of criteria
QC Data for Lot Number: WC20017
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Page 20 of 33
Volatile Organic Compounds by GC/MS - LCS
Batch:Prep Method:
Sample ID:WQ87072-002
87072 SM 6200B-2011
Analytical Method:SM 6200B-2011
Matrix:Aqueous
Parameter
Result
Q % Rec
Spike
Amount
Analysis Date
%Rec
LimitDil(ug/L)(ug/L)
Benzene 51 03/26/2021 20441025070-1301
Bromobenzene 50 03/26/2021 20441005070-1301
Bromochloromethane 49 03/26/2021 2044975070-1301
Bromodichloromethane 44 03/26/2021 2044895070-1301
Bromoform 41 03/26/2021 2044825070-1301
Bromomethane (Methyl bromide)47 03/26/2021 2044935060-1401
n-Butylbenzene 56 03/26/2021 20441115070-1301
sec-Butylbenzene 55 03/26/2021 20441095070-1301
tert-Butylbenzene 52 03/26/2021 20441035070-1301
Carbon tetrachloride 44 03/26/2021 2044885070-1301
Chlorobenzene 49 03/26/2021 2044985070-1301
Chloroethane 49 03/26/2021 2044975042-1631
Chloroform 48 03/26/2021 2044955070-1301
Chloromethane (Methyl chloride)49 03/26/2021 2044985020-1581
2-Chlorotoluene 53 03/26/2021 20441055070-1301
4-Chlorotoluene 50 03/26/2021 20441015070-1301
Dibromochloromethane 44 03/26/2021 2044885070-1301
1,2-Dibromoethane (EDB)49 03/26/2021 2044975070-1301
Dibromomethane (Methylene bromide)46 03/26/2021 2044915070-1301
1,2-Dichlorobenzene 51 03/26/2021 20441035070-1301
1,3-Dichlorobenzene 50 03/26/2021 20441005070-1301
1,4-Dichlorobenzene 49 03/26/2021 2044995070-1301
Dichlorodifluoromethane 42 03/26/2021 2044845060-1401
1,1-Dichloroethane 51 03/26/2021 20441025070-1301
1,2-Dichloroethane 44 03/26/2021 2044885070-1301
1,1-Dichloroethene 52 03/26/2021 20441045070-1301
cis-1,2-Dichloroethene 49 03/26/2021 2044985070-1301
trans-1,2-Dichloroethene 52 03/26/2021 20441055070-1301
1,2-Dichloropropane 51 03/26/2021 20441025070-1301
1,3-Dichloropropane 51 03/26/2021 20441025070-1301
2,2-Dichloropropane 45 03/26/2021 2044895070-1301
1,1-Dichloropropene 50 03/26/2021 20441015070-1301
cis-1,3-Dichloropropene 50 03/26/2021 2044995070-1301
trans-1,3-Dichloropropene 47 03/26/2021 2044945070-1301
Diisopropyl ether (IPE)52 03/26/2021 20441045070-1301
Ethylbenzene 49 03/26/2021 2044985070-1301
Hexachlorobutadiene 52 03/26/2021 20441045070-1301
Isopropylbenzene (Cumene)50 03/26/2021 2044995070-1301
p-Isopropyltoluene (p-Cymene)52 03/26/2021 20441055070-1301
Methyl tertiary butyl ether (MTBE)49 03/26/2021 2044975070-1301
Methylene chloride 51 03/26/2021 20441025070-1301
Naphthalene 54 03/26/2021 20441095050-1401
n-Propylbenzene 54 03/26/2021 20441075070-1301
Styrene 49 03/26/2021 2044985070-1301
Note:Calculations are performed before rounding to avoid round-off errors in calculated results
LOQ = Limit of Quantitation ND = Not detected at or above the DL
J = Estimated result < LOQ and > DL
N = Recovery is out of criteria
P = The RPD between two GC columns exceeds 40%
+ = RPD is out of criteria
_DL = Detection Limit
* = RSD is out of criteria
QC Data for Lot Number: WC20017
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Page 21 of 33
Volatile Organic Compounds by GC/MS - LCS
Batch:Prep Method:
Sample ID:WQ87072-002
87072 SM 6200B-2011
Analytical Method:SM 6200B-2011
Matrix:Aqueous
Parameter
Result
Q % Rec
Spike
Amount
Analysis Date
%Rec
LimitDil(ug/L)(ug/L)
1,1,1,2-Tetrachloroethane 46 03/26/2021 2044935070-1301
1,1,2,2-Tetrachloroethane 55 03/26/2021 20441095070-1301
Tetrachloroethene 46 03/26/2021 2044925070-1301
Toluene 50 03/26/2021 20441015070-1301
1,1,2-Trichloro-1,2,2-Trifluoroethane 54 03/26/2021 20441075070-1301
1,2,3-Trichlorobenzene 52 03/26/2021 20441045070-1301
1,2,4-Trichlorobenzene 50 03/26/2021 20441015070-1301
1,1,1-Trichloroethane 43 03/26/2021 2044875070-1301
1,1,2-Trichloroethane 50 03/26/2021 20441015070-1301
Trichloroethene 47 03/26/2021 2044945070-1301
Trichlorofluoromethane 42 03/26/2021 2044845060-1401
1,2,3-Trichloropropane 55 03/26/2021 20441105070-1301
1,3,5-Trimethylbenzene (Mesitylene)53 03/26/2021 20441055070-1301
1,2,4-Trimethylbenzene 53 03/26/2021 20441055070-1301
Vinyl chloride 49 03/26/2021 2044995060-1401
m+p - Xylenes 49 03/26/2021 2044985070-1301
o - Xylenes 50 03/26/2021 20441005070-1301
Surrogate Q % Rec Acceptance
Limit
1,2-Dichloroethane-d4 83 70-130
Bromofluorobenzene 95 70-130
Toluene-d8 94 70-130
Note:Calculations are performed before rounding to avoid round-off errors in calculated results
LOQ = Limit of Quantitation ND = Not detected at or above the DL
J = Estimated result < LOQ and > DL
N = Recovery is out of criteria
P = The RPD between two GC columns exceeds 40%
+ = RPD is out of criteria
_DL = Detection Limit
* = RSD is out of criteria
QC Data for Lot Number: WC20017
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Page 22 of 33
Volatile Organic Compounds by GC/MS - MB
Batch:Prep Method:
Sample ID:WQ87078-001
87078 SM 6200B-2011
Analytical Method:SM 6200B-2011
Matrix:Aqueous
Parameter Result Q LOQ DL Units Analysis DateDil
Benzene ND 03/27/2021 00310.50 0.40 ug/L1
Bromobenzene ND 03/27/2021 00310.50 0.40 ug/L1
Bromochloromethane ND 03/27/2021 00310.50 0.40 ug/L1
Bromodichloromethane ND 03/27/2021 00310.50 0.40 ug/L1
Bromoform ND 03/27/2021 00310.50 0.40 ug/L1
Bromomethane (Methyl bromide)ND 03/27/2021 00310.50 0.40 ug/L1
n-Butylbenzene ND 03/27/2021 00310.50 0.40 ug/L1
sec-Butylbenzene ND 03/27/2021 00310.50 0.40 ug/L1
tert-Butylbenzene ND 03/27/2021 00310.50 0.40 ug/L1
Carbon tetrachloride ND 03/27/2021 00310.50 0.40 ug/L1
Chlorobenzene ND 03/27/2021 00310.50 0.40 ug/L1
Chloroethane ND 03/27/2021 00310.50 0.40 ug/L1
Chloroform ND 03/27/2021 00310.50 0.40 ug/L1
Chloromethane (Methyl chloride)ND 03/27/2021 00310.50 0.40 ug/L1
2-Chlorotoluene ND 03/27/2021 00310.50 0.40 ug/L1
4-Chlorotoluene ND 03/27/2021 00310.50 0.40 ug/L1
Dibromochloromethane ND 03/27/2021 00310.50 0.40 ug/L1
1,2-Dibromoethane (EDB)ND 03/27/2021 00310.50 0.40 ug/L1
Dibromomethane (Methylene bromide)ND 03/27/2021 00310.50 0.40 ug/L1
1,2-Dichlorobenzene ND 03/27/2021 00310.50 0.40 ug/L1
1,3-Dichlorobenzene ND 03/27/2021 00310.50 0.40 ug/L1
1,4-Dichlorobenzene ND 03/27/2021 00310.50 0.40 ug/L1
Dichlorodifluoromethane ND 03/27/2021 00310.50 0.40 ug/L1
1,1-Dichloroethane ND 03/27/2021 00310.50 0.40 ug/L1
1,2-Dichloroethane ND 03/27/2021 00310.50 0.40 ug/L1
1,1-Dichloroethene ND 03/27/2021 00310.50 0.40 ug/L1
cis-1,2-Dichloroethene ND 03/27/2021 00310.50 0.40 ug/L1
trans-1,2-Dichloroethene ND 03/27/2021 00310.50 0.40 ug/L1
1,2-Dichloropropane ND 03/27/2021 00310.50 0.40 ug/L1
1,3-Dichloropropane ND 03/27/2021 00310.50 0.40 ug/L1
2,2-Dichloropropane ND 03/27/2021 00310.50 0.40 ug/L1
1,1-Dichloropropene ND 03/27/2021 00310.50 0.40 ug/L1
cis-1,3-Dichloropropene ND 03/27/2021 00310.50 0.40 ug/L1
trans-1,3-Dichloropropene ND 03/27/2021 00310.50 0.40 ug/L1
Diisopropyl ether (IPE)ND 03/27/2021 00310.50 0.40 ug/L1
Ethylbenzene ND 03/27/2021 00310.50 0.40 ug/L1
Hexachlorobutadiene ND 03/27/2021 00310.50 0.40 ug/L1
Isopropylbenzene (Cumene)ND 03/27/2021 00310.50 0.40 ug/L1
p-Isopropyltoluene (p-Cymene)ND 03/27/2021 00310.50 0.40 ug/L1
Methyl tertiary butyl ether (MTBE)ND 03/27/2021 00310.50 0.40 ug/L1
Methylene chloride ND 03/27/2021 00310.50 0.40 ug/L1
Naphthalene ND 03/27/2021 00310.50 0.40 ug/L1
n-Propylbenzene ND 03/27/2021 00310.50 0.40 ug/L1
Styrene ND 03/27/2021 00310.50 0.40 ug/L1
Note:Calculations are performed before rounding to avoid round-off errors in calculated results
LOQ = Limit of Quantitation ND = Not detected at or above the DL
J = Estimated result < LOQ and > DL
N = Recovery is out of criteria
P = The RPD between two GC columns exceeds 40%
+ = RPD is out of criteria
_DL = Detection Limit
* = RSD is out of criteria
QC Data for Lot Number: WC20017
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Page 23 of 33
Volatile Organic Compounds by GC/MS - MB
Batch:Prep Method:
Sample ID:WQ87078-001
87078 SM 6200B-2011
Analytical Method:SM 6200B-2011
Matrix:Aqueous
Parameter Result Q LOQ DL Units Analysis DateDil
1,1,1,2-Tetrachloroethane ND 03/27/2021 00310.50 0.40 ug/L1
1,1,2,2-Tetrachloroethane ND 03/27/2021 00310.50 0.40 ug/L1
Tetrachloroethene ND 03/27/2021 00310.50 0.40 ug/L1
Toluene ND 03/27/2021 00310.50 0.40 ug/L1
1,1,2-Trichloro-1,2,2-Trifluoroethane ND 03/27/2021 00310.50 0.40 ug/L1
1,2,3-Trichlorobenzene ND 03/27/2021 00310.50 0.40 ug/L1
1,2,4-Trichlorobenzene ND 03/27/2021 00310.50 0.40 ug/L1
1,1,1-Trichloroethane ND 03/27/2021 00310.50 0.40 ug/L1
1,1,2-Trichloroethane ND 03/27/2021 00310.50 0.40 ug/L1
Trichloroethene ND 03/27/2021 00310.50 0.40 ug/L1
Trichlorofluoromethane ND 03/27/2021 00310.50 0.40 ug/L1
1,2,3-Trichloropropane ND 03/27/2021 00310.50 0.40 ug/L1
1,3,5-Trimethylbenzene (Mesitylene)ND 03/27/2021 00310.50 0.40 ug/L1
1,2,4-Trimethylbenzene ND 03/27/2021 00310.50 0.40 ug/L1
Vinyl chloride ND 03/27/2021 00310.50 0.40 ug/L1
m+p - Xylenes ND 03/27/2021 00310.50 0.40 ug/L1
o - Xylenes ND 03/27/2021 00310.50 0.40 ug/L1
Surrogate Q % Rec Acceptance
Limit
1,2-Dichloroethane-d4 82 70-130
Bromofluorobenzene 98 70-130
Toluene-d8 88 70-130
Note:Calculations are performed before rounding to avoid round-off errors in calculated results
LOQ = Limit of Quantitation ND = Not detected at or above the DL
J = Estimated result < LOQ and > DL
N = Recovery is out of criteria
P = The RPD between two GC columns exceeds 40%
+ = RPD is out of criteria
_DL = Detection Limit
* = RSD is out of criteria
QC Data for Lot Number: WC20017
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Page 24 of 33
Volatile Organic Compounds by GC/MS - LCS
Batch:Prep Method:
Sample ID:WQ87078-002
87078 SM 6200B-2011
Analytical Method:SM 6200B-2011
Matrix:Aqueous
Parameter
Result
Q % Rec
Spike
Amount
Analysis Date
%Rec
LimitDil(ug/L)(ug/L)
Benzene 50 03/26/2021 20491005070-1301
Bromobenzene 53 03/26/2021 20491055070-1301
Bromochloromethane 49 03/26/2021 2049985070-1301
Bromodichloromethane 49 03/26/2021 2049975070-1301
Bromoform 44 03/26/2021 2049885070-1301
Bromomethane (Methyl bromide)41 03/26/2021 2049825060-1401
n-Butylbenzene 53 03/26/2021 20491065070-1301
sec-Butylbenzene 52 03/26/2021 20491045070-1301
tert-Butylbenzene 51 03/26/2021 20491015070-1301
Carbon tetrachloride 48 03/26/2021 2049975070-1301
Chlorobenzene 51 03/26/2021 20491015070-1301
Chloroethane 44 03/26/2021 2049895042-1631
Chloroform 46 03/26/2021 2049915070-1301
Chloromethane (Methyl chloride)39 03/26/2021 2049785020-1581
2-Chlorotoluene 50 03/26/2021 20491005070-1301
4-Chlorotoluene 53 03/26/2021 20491065070-1301
Dibromochloromethane 45 03/26/2021 2049905070-1301
1,2-Dibromoethane (EDB)53 03/26/2021 20491065070-1301
Dibromomethane (Methylene bromide)48 03/26/2021 2049975070-1301
1,2-Dichlorobenzene 52 03/26/2021 20491035070-1301
1,3-Dichlorobenzene 52 03/26/2021 20491055070-1301
1,4-Dichlorobenzene 50 03/26/2021 20491005070-1301
Dichlorodifluoromethane 41 03/26/2021 2049825060-1401
1,1-Dichloroethane 47 03/26/2021 2049935070-1301
1,2-Dichloroethane 46 03/26/2021 2049915070-1301
1,1-Dichloroethene 49 03/26/2021 2049995070-1301
cis-1,2-Dichloroethene 49 03/26/2021 2049975070-1301
trans-1,2-Dichloroethene 49 03/26/2021 2049995070-1301
1,2-Dichloropropane 50 03/26/2021 20491015070-1301
1,3-Dichloropropane 49 03/26/2021 2049975070-1301
2,2-Dichloropropane 46 03/26/2021 2049935070-1301
1,1-Dichloropropene 46 03/26/2021 2049915070-1301
cis-1,3-Dichloropropene 53 03/26/2021 20491065070-1301
trans-1,3-Dichloropropene 44 03/26/2021 2049885070-1301
Diisopropyl ether (IPE)49 03/26/2021 2049975070-1301
Ethylbenzene 52 03/26/2021 20491055070-1301
Hexachlorobutadiene 56 03/26/2021 20491125070-1301
Isopropylbenzene (Cumene)53 03/26/2021 20491075070-1301
p-Isopropyltoluene (p-Cymene)54 03/26/2021 20491095070-1301
Methyl tertiary butyl ether (MTBE)45 03/26/2021 2049915070-1301
Methylene chloride 46 03/26/2021 2049915070-1301
Naphthalene 50 03/26/2021 20491005050-1401
n-Propylbenzene 51 03/26/2021 20491015070-1301
Styrene 55 03/26/2021 20491115070-1301
Note:Calculations are performed before rounding to avoid round-off errors in calculated results
LOQ = Limit of Quantitation ND = Not detected at or above the DL
J = Estimated result < LOQ and > DL
N = Recovery is out of criteria
P = The RPD between two GC columns exceeds 40%
+ = RPD is out of criteria
_DL = Detection Limit
* = RSD is out of criteria
QC Data for Lot Number: WC20017
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Page 25 of 33
Volatile Organic Compounds by GC/MS - LCS
Batch:Prep Method:
Sample ID:WQ87078-002
87078 SM 6200B-2011
Analytical Method:SM 6200B-2011
Matrix:Aqueous
Parameter
Result
Q % Rec
Spike
Amount
Analysis Date
%Rec
LimitDil(ug/L)(ug/L)
1,1,1,2-Tetrachloroethane 52 03/26/2021 20491045070-1301
1,1,2,2-Tetrachloroethane 52 03/26/2021 20491045070-1301
Tetrachloroethene 52 03/26/2021 20491055070-1301
Toluene 51 03/26/2021 20491015070-1301
1,1,2-Trichloro-1,2,2-Trifluoroethane 50 03/26/2021 20491015070-1301
1,2,3-Trichlorobenzene 54 03/26/2021 20491085070-1301
1,2,4-Trichlorobenzene 54 03/26/2021 20491095070-1301
1,1,1-Trichloroethane 47 03/26/2021 2049955070-1301
1,1,2-Trichloroethane 50 03/26/2021 2049995070-1301
Trichloroethene 51 03/26/2021 20491035070-1301
Trichlorofluoromethane 46 03/26/2021 2049925060-1401
1,2,3-Trichloropropane 50 03/26/2021 20491005070-1301
1,3,5-Trimethylbenzene (Mesitylene)52 03/26/2021 20491045070-1301
1,2,4-Trimethylbenzene 53 03/26/2021 20491065070-1301
Vinyl chloride 42 03/26/2021 2049845060-1401
m+p - Xylenes 53 03/26/2021 20491055070-1301
o - Xylenes 52 03/26/2021 20491055070-1301
Surrogate Q % Rec Acceptance
Limit
1,2-Dichloroethane-d4 83 70-130
Bromofluorobenzene 91 70-130
Toluene-d8 92 70-130
Note:Calculations are performed before rounding to avoid round-off errors in calculated results
LOQ = Limit of Quantitation ND = Not detected at or above the DL
J = Estimated result < LOQ and > DL
N = Recovery is out of criteria
P = The RPD between two GC columns exceeds 40%
+ = RPD is out of criteria
_DL = Detection Limit
* = RSD is out of criteria
QC Data for Lot Number: WC20017
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Page 26 of 33
Volatile Organic Compounds by GC/MS - MB
Batch:Prep Method:
Sample ID:WQ87386-001
87386 SM 6200B-2011
Analytical Method:SM 6200B-2011
Matrix:Aqueous
Parameter Result Q LOQ DL Units Analysis DateDil
Benzene ND 03/30/2021 13530.50 0.40 ug/L1
Bromobenzene ND 03/30/2021 13530.50 0.40 ug/L1
Bromochloromethane ND 03/30/2021 13530.50 0.40 ug/L1
Bromodichloromethane ND 03/30/2021 13530.50 0.40 ug/L1
Bromoform ND 03/30/2021 13530.50 0.40 ug/L1
Bromomethane (Methyl bromide)ND 03/30/2021 13530.50 0.40 ug/L1
n-Butylbenzene ND 03/30/2021 13530.50 0.40 ug/L1
sec-Butylbenzene ND 03/30/2021 13530.50 0.40 ug/L1
tert-Butylbenzene ND 03/30/2021 13530.50 0.40 ug/L1
Carbon tetrachloride ND 03/30/2021 13530.50 0.40 ug/L1
Chlorobenzene ND 03/30/2021 13530.50 0.40 ug/L1
Chloroethane ND 03/30/2021 13530.50 0.40 ug/L1
Chloroform ND 03/30/2021 13530.50 0.40 ug/L1
Chloromethane (Methyl chloride)ND 03/30/2021 13530.50 0.40 ug/L1
2-Chlorotoluene ND 03/30/2021 13530.50 0.40 ug/L1
4-Chlorotoluene ND 03/30/2021 13530.50 0.40 ug/L1
Dibromochloromethane ND 03/30/2021 13530.50 0.40 ug/L1
1,2-Dibromoethane (EDB)ND 03/30/2021 13530.50 0.40 ug/L1
Dibromomethane (Methylene bromide)ND 03/30/2021 13530.50 0.40 ug/L1
1,2-Dichlorobenzene ND 03/30/2021 13530.50 0.40 ug/L1
1,3-Dichlorobenzene ND 03/30/2021 13530.50 0.40 ug/L1
1,4-Dichlorobenzene ND 03/30/2021 13530.50 0.40 ug/L1
Dichlorodifluoromethane ND 03/30/2021 13530.50 0.40 ug/L1
1,1-Dichloroethane ND 03/30/2021 13530.50 0.40 ug/L1
1,2-Dichloroethane ND 03/30/2021 13530.50 0.40 ug/L1
1,1-Dichloroethene ND 03/30/2021 13530.50 0.40 ug/L1
cis-1,2-Dichloroethene ND 03/30/2021 13530.50 0.40 ug/L1
trans-1,2-Dichloroethene ND 03/30/2021 13530.50 0.40 ug/L1
1,2-Dichloropropane ND 03/30/2021 13530.50 0.40 ug/L1
1,3-Dichloropropane ND 03/30/2021 13530.50 0.40 ug/L1
2,2-Dichloropropane ND 03/30/2021 13530.50 0.40 ug/L1
1,1-Dichloropropene ND 03/30/2021 13530.50 0.40 ug/L1
cis-1,3-Dichloropropene ND 03/30/2021 13530.50 0.40 ug/L1
trans-1,3-Dichloropropene ND 03/30/2021 13530.50 0.40 ug/L1
Diisopropyl ether (IPE)ND 03/30/2021 13530.50 0.40 ug/L1
Ethylbenzene ND 03/30/2021 13530.50 0.40 ug/L1
Hexachlorobutadiene 0.47 03/30/2021 1353J0.50 0.40 ug/L1
Isopropylbenzene (Cumene)ND 03/30/2021 13530.50 0.40 ug/L1
p-Isopropyltoluene (p-Cymene)ND 03/30/2021 13530.50 0.40 ug/L1
Methyl tertiary butyl ether (MTBE)ND 03/30/2021 13530.50 0.40 ug/L1
Methylene chloride ND 03/30/2021 13530.50 0.40 ug/L1
Naphthalene ND 03/30/2021 13530.50 0.40 ug/L1
n-Propylbenzene ND 03/30/2021 13530.50 0.40 ug/L1
Styrene ND 03/30/2021 13530.50 0.40 ug/L1
Note:Calculations are performed before rounding to avoid round-off errors in calculated results
LOQ = Limit of Quantitation ND = Not detected at or above the DL
J = Estimated result < LOQ and > DL
N = Recovery is out of criteria
P = The RPD between two GC columns exceeds 40%
+ = RPD is out of criteria
_DL = Detection Limit
* = RSD is out of criteria
QC Data for Lot Number: WC20017
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Page 27 of 33
Volatile Organic Compounds by GC/MS - MB
Batch:Prep Method:
Sample ID:WQ87386-001
87386 SM 6200B-2011
Analytical Method:SM 6200B-2011
Matrix:Aqueous
Parameter Result Q LOQ DL Units Analysis DateDil
1,1,1,2-Tetrachloroethane ND 03/30/2021 13530.50 0.40 ug/L1
1,1,2,2-Tetrachloroethane ND 03/30/2021 13530.50 0.40 ug/L1
Tetrachloroethene ND 03/30/2021 13530.50 0.40 ug/L1
Toluene ND 03/30/2021 13530.50 0.40 ug/L1
1,1,2-Trichloro-1,2,2-Trifluoroethane ND 03/30/2021 13530.50 0.40 ug/L1
1,2,3-Trichlorobenzene 0.47 03/30/2021 1353J0.50 0.40 ug/L1
1,2,4-Trichlorobenzene ND 03/30/2021 13530.50 0.40 ug/L1
1,1,1-Trichloroethane ND 03/30/2021 13530.50 0.40 ug/L1
1,1,2-Trichloroethane ND 03/30/2021 13530.50 0.40 ug/L1
Trichloroethene ND 03/30/2021 13530.50 0.40 ug/L1
Trichlorofluoromethane ND 03/30/2021 13530.50 0.40 ug/L1
1,2,3-Trichloropropane ND 03/30/2021 13530.50 0.40 ug/L1
1,3,5-Trimethylbenzene (Mesitylene)ND 03/30/2021 13530.50 0.40 ug/L1
1,2,4-Trimethylbenzene ND 03/30/2021 13530.50 0.40 ug/L1
Vinyl chloride ND 03/30/2021 13530.50 0.40 ug/L1
m+p - Xylenes ND 03/30/2021 13530.50 0.40 ug/L1
o - Xylenes ND 03/30/2021 13530.50 0.40 ug/L1
Surrogate Q % Rec Acceptance
Limit
1,2-Dichloroethane-d4 98 70-130
Bromofluorobenzene 99 70-130
Toluene-d8 101 70-130
Note:Calculations are performed before rounding to avoid round-off errors in calculated results
LOQ = Limit of Quantitation ND = Not detected at or above the DL
J = Estimated result < LOQ and > DL
N = Recovery is out of criteria
P = The RPD between two GC columns exceeds 40%
+ = RPD is out of criteria
_DL = Detection Limit
* = RSD is out of criteria
QC Data for Lot Number: WC20017
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Page 28 of 33
Volatile Organic Compounds by GC/MS - LCS
Batch:Prep Method:
Sample ID:WQ87386-002
87386 SM 6200B-2011
Analytical Method:SM 6200B-2011
Matrix:Aqueous
Parameter
Result
Q % Rec
Spike
Amount
Analysis Date
%Rec
LimitDil(ug/L)(ug/L)
Benzene 45 03/30/2021 1244905070-1301
Bromobenzene 47 03/30/2021 1244945070-1301
Bromochloromethane 46 03/30/2021 1244915070-1301
Bromodichloromethane 47 03/30/2021 1244945070-1301
Bromoform 47 03/30/2021 1244955070-1301
Bromomethane (Methyl bromide)45 03/30/2021 1244905060-1401
n-Butylbenzene 46 03/30/2021 1244935070-1301
sec-Butylbenzene 47 03/30/2021 1244945070-1301
tert-Butylbenzene 49 03/30/2021 1244985070-1301
Carbon tetrachloride 46 03/30/2021 1244925070-1301
Chlorobenzene 44 03/30/2021 1244895070-1301
Chloroethane 45 03/30/2021 1244895042-1631
Chloroform 44 03/30/2021 1244885070-1301
Chloromethane (Methyl chloride)42 03/30/2021 1244845020-1581
2-Chlorotoluene 48 03/30/2021 1244965070-1301
4-Chlorotoluene 47 03/30/2021 1244945070-1301
Dibromochloromethane 48 03/30/2021 1244955070-1301
1,2-Dibromoethane (EDB)46 03/30/2021 1244935070-1301
Dibromomethane (Methylene bromide)46 03/30/2021 1244925070-1301
1,2-Dichlorobenzene 50 03/30/2021 1244995070-1301
1,3-Dichlorobenzene 45 03/30/2021 1244905070-1301
1,4-Dichlorobenzene 46 03/30/2021 1244935070-1301
Dichlorodifluoromethane 47 03/30/2021 1244945060-1401
1,1-Dichloroethane 44 03/30/2021 1244885070-1301
1,2-Dichloroethane 46 03/30/2021 1244925070-1301
1,1-Dichloroethene 44 03/30/2021 1244885070-1301
cis-1,2-Dichloroethene 44 03/30/2021 1244895070-1301
trans-1,2-Dichloroethene 43 03/30/2021 1244865070-1301
1,2-Dichloropropane 46 03/30/2021 1244925070-1301
1,3-Dichloropropane 45 03/30/2021 1244905070-1301
2,2-Dichloropropane 51 03/30/2021 12441035070-1301
1,1-Dichloropropene 43 03/30/2021 1244865070-1301
cis-1,3-Dichloropropene 47 03/30/2021 1244935070-1301
trans-1,3-Dichloropropene 48 03/30/2021 1244965070-1301
Diisopropyl ether (IPE)44 03/30/2021 1244895070-1301
Ethylbenzene 45 03/30/2021 1244905070-1301
Hexachlorobutadiene 45 03/30/2021 1244905070-1301
Isopropylbenzene (Cumene)47 03/30/2021 1244955070-1301
p-Isopropyltoluene (p-Cymene)48 03/30/2021 1244955070-1301
Methyl tertiary butyl ether (MTBE)45 03/30/2021 1244905070-1301
Methylene chloride 43 03/30/2021 1244855070-1301
Naphthalene 48 03/30/2021 1244965050-1401
n-Propylbenzene 48 03/30/2021 1244955070-1301
Styrene 47 03/30/2021 1244945070-1301
Note:Calculations are performed before rounding to avoid round-off errors in calculated results
LOQ = Limit of Quantitation ND = Not detected at or above the DL
J = Estimated result < LOQ and > DL
N = Recovery is out of criteria
P = The RPD between two GC columns exceeds 40%
+ = RPD is out of criteria
_DL = Detection Limit
* = RSD is out of criteria
QC Data for Lot Number: WC20017
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Page 29 of 33
Volatile Organic Compounds by GC/MS - LCS
Batch:Prep Method:
Sample ID:WQ87386-002
87386 SM 6200B-2011
Analytical Method:SM 6200B-2011
Matrix:Aqueous
Parameter
Result
Q % Rec
Spike
Amount
Analysis Date
%Rec
LimitDil(ug/L)(ug/L)
1,1,1,2-Tetrachloroethane 48 03/30/2021 1244965070-1301
1,1,2,2-Tetrachloroethane 49 03/30/2021 1244985070-1301
Tetrachloroethene 48 03/30/2021 1244965070-1301
Toluene 46 03/30/2021 1244925070-1301
1,1,2-Trichloro-1,2,2-Trifluoroethane 47 03/30/2021 1244945070-1301
1,2,3-Trichlorobenzene 46 03/30/2021 1244925070-1301
1,2,4-Trichlorobenzene 47 03/30/2021 1244945070-1301
1,1,1-Trichloroethane 46 03/30/2021 1244925070-1301
1,1,2-Trichloroethane 47 03/30/2021 1244935070-1301
Trichloroethene 46 03/30/2021 1244925070-1301
Trichlorofluoromethane 49 03/30/2021 1244975060-1401
1,2,3-Trichloropropane 48 03/30/2021 1244965070-1301
1,3,5-Trimethylbenzene (Mesitylene)50 03/30/2021 12441005070-1301
1,2,4-Trimethylbenzene 49 03/30/2021 1244985070-1301
Vinyl chloride 45 03/30/2021 1244895060-1401
m+p - Xylenes 45 03/30/2021 1244895070-1301
o - Xylenes 46 03/30/2021 1244935070-1301
Surrogate Q % Rec Acceptance
Limit
1,2-Dichloroethane-d4 97 70-130
Bromofluorobenzene 102 70-130
Toluene-d8 95 70-130
Note:Calculations are performed before rounding to avoid round-off errors in calculated results
LOQ = Limit of Quantitation ND = Not detected at or above the DL
J = Estimated result < LOQ and > DL
N = Recovery is out of criteria
P = The RPD between two GC columns exceeds 40%
+ = RPD is out of criteria
_DL = Detection Limit
* = RSD is out of criteria
QC Data for Lot Number: WC20017
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Page 30 of 33
Chain of Custody
and
Miscellaneous Documents
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Page 31 of 33
PACE ANALYTICAL SERVICES, LLC

106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Page 32 of 33
PACE ANALYTICAL SERVICES, LLC

106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Page 33 of 33