RA-552_3534_CA_MRP_20191223

SUBSEQUENT MONITORING REPORT
Wilsonville General Store (Incident #3534)
10580 U.S. Highway 64 East
Wilsonville, Chatham County, North Carolina
December 23, 2019
Terracon Project No. 70149669A

Prepared for:
North Carolina Department of Environmental Quality
Division of Waste Management
Raleigh, North Carolina

Prepared by:
Terracon Consultants, Inc.
Raleigh, North Carolina

Table of Contents
A. SITE INFORMATION ............................................................................................ 1
B. EXECUTIVE SUMMARY ....................................................................................... 2
C. SITE HISTORY AND CHARACTERIZATION ....................................................... 3
C.1 Site Setting ............................................................................................................................................ 3
C.2 Release Summary................................................................................................................................. 4
C.3 Previous Investigations ....................................................................................................................... 4
C.4 Water Supply Wells .............................................................................................................................. 5
D. ASSESSMENT INFORMATION ............................................................................ 5
D.1 Free Product Evaluation ...................................................................................................................... 5
D.2 Groundwater Sampling Activities ...................................................................................................... 5
D.3 Monitoring Well Analytical Results .................................................................................................... 6
D.4 Water Supply Well Sampling Activities ............................................................................................. 6
D.5 Water Supply Well Analytical Results ............................................................................................... 7
E. CONCLUSIONS AND RECOMMENDATIONS ..................................................... 7
F. REFERENCES ......................................................................................................... 8
FIGURES
Figure 1: Site Location Map
Figure 2: Site Layout
Figure 3: Water Supply Well Location Map
Figure 4: Groundwater Flow Map (November 2019)
Figure 5: Groundwater Analytical Results (November 2019)

TABLES
Table 1: Conceptual Site Model
Table 2: Water Supply Well Information
Table 3: Monitoring Well Construction and Historical Groundwater Elevations
Table 4: Summary of Groundwater Analytical Results

APPENDIX
Appendix A: Field Notes and Photographs
Appendix B: Laboratory Analytical Results and Chain of Custody Forms
Wilsonville General Store
Wilsonville, North Carolina
Terracon Project No. 70149669A
Incident No. 3534
December 23, 2019

Responsive ■ Resourceful ■ Reliable 1

SUBSEQUENT MONITORING REPORT
A. SITE INFORMATION

Date of Report: December 23, 2019
NCDEQ Incident No: 3534
UST Number: RA-552
Facility ID: 0-026422
Site Name: Wilsonville General Store
Site Location: 10580 U.S. Highway 64 East
Wilsonville, North Carolina 27526
Latitude: N 35.736203
Longitude: W 78.999946
UST Owner/Operator: Mr. Vossie Lee Horton
193 John Horton Road
Apex, North Carolina 27502
[phone]

Current Property Owner: Same as UST Owner/Operator

Current Property
Occupant: Wilsonville General Store [phone]

Consultant: Terracon Consultants, Inc. (Contact: Justin L. Fabriziani)
2401 Brentwood Road, Suite 107
Raleigh, North Carolina 27604
[phone]

Laboratory: Shealy Environmental Services (NCDEQ No. 329)
106 Vantage Point Drive
West Columbia, South Carolina 29172
[phone]

Release Information: Release Discovery Date: August 1987
Estimated Quantity: Unknown
Cause of Release: Former Underground Storage Tank Systems
Currently Active Tanks: Yes (New Underground Storage Tank System)
Wilsonville General Store
Wilsonville, North Carolina
Terracon Project No. 70149669A
Incident No. 3534
December 23, 2019

Responsive ■ Resourceful ■ Reliable 3
◼ Di-isopropyl ether (IPE) and methyl tert butyl ether (MTBE) were identified at a concentration
below their 2L standards in water supply well WSW-1. Other volatile organic compounds
(VOCs) were not detected above laboratory reporting limits in the sampled water supply wells.
◼ In July 2019, with the owners’ agreement to NCDEQ’s request, Terracon connected the
properties containing WSW-6 and WSW-7 to the municipal water system. WSW-6 and WSW-7
are currently inactive. Terracon is currently in the process of coordinating the abandonment of
these two water supply wells.
◼ Eight water supply wells are located within 1,000 feet of the source area. Three currently serve
as potable water sources and five are currently inactive. Municipal water is available to prop-
erties within 1,000 feet of the source area. The active potable water supply wells are
generally located topographically up-gradient in relation to the site source area.
◼ The horizontal and vertical extents of the plume have not been delineated.
◼ 1,2-Dichloroethane (1,2-DCA) and 1,2-dibromoethane (EDB) have historically been detected in
on-site groundwater. According to the Interstate Technology Regulatory Council (ITRC)
Petroleum Vapor Intrusion (PVI) guidance, 1,2-DCA and EDB are considered to be precluding
factors; therefore, additional evaluation of the PVI pathway for the dissolved-phase plume is
warranted. A preliminary evaluation was conducted by comparing groundwater concentrations
with the NCDEQ Residential and Non-Residential VI-GWSLs. Compounds detected during
recent sampling events exceed their respective VI-GWSL; therefore, additional evaluation of
the PVI pathway for the dissolved-phase plume is warranted.
C. SITE HISTORY AND CHARACTERIZATION
The purpose of this report is to evaluate the current status of the groundwater quality at the
Wilsonville General Store site and groundwater quality in nearby water supply wells. Terracon
completed this report to summarize the findings of assessment activities performed in November
2019 at the Wilsonville General Store site located at 10580 U.S. Highway 64 East in Wilsonville,
Chatham County, North Carolina (Figure 1). This Subsequent Monitoring report was prepared in
accordance with the Task Authorization approved by Mark Petermann, Incident Manager with the
NCDEQ Division of Waste Management, State Lead Program.

The Subsequent Monitoring Report was prepared in general accordance with the 15A NCAC 2L
.0115 regulations and the NCDEQ Underground Storage Tank (UST) Section Guidelines for
Assessment and Corrective Action for UST Releases, dated July 15, 2008, revised December
23013, under the supervision of Mr. William O. Frazier, P.G., a North Carolina registered licensed
geologist (North Carolina License No. 2576).

C.1 Site Setting
The Wilsonville General Store site is comprised of approximately 2.26 acres and contains a
single-story commercial building operated as Wilsonville General Store (gas station, convenience
store, and restaurant). The remainder of the site consists of paved, landscaped, and grassy areas.
Wilsonville General Store
Wilsonville, North Carolina
Terracon Project No. 70149669A
Incident No. 3534
December 23, 2019

Responsive ■ Resourceful ■ Reliable 4
The surrounding properties primarily consist of undeveloped wooded land with commercial and
residential development. A Cruizers/Mobil gas station (location of WSW-5) is located across
U.S. Highway 64 approximately 250 feet northwest of the site. There are two UST release incidents
associated with the Cruziers/Mobil gas station (Lake Mart Convenience Store Incident #33465 and
The Pantry Incident #33221). Property to the north consists of U.S. Highway 64 followed by
undeveloped wooded land and a residential property. Property to the east consists of undeveloped
wooded land. Property to the south consists of undeveloped wooded and clear land followed by a
residential property. Property to the west consists of Beaver Creek Road followed by a Grill-N-Go
restaurant. Additional residential properties are located in the northeastern and southwestern
vicinities. The site and surrounding properties are depicted on Figure 2.

C.2 Release Summary
A release from a former on-site UST system was discovered in August 1987, when soil and
groundwater at the site were assessed as part of due diligence activities for a potential real estate
transaction. A chronological summary of UST removal and subsequent assessment activities at the
site is discussed in the following section of the report.

The table below provides a summary of UST closures and installations. Additional UST systems
have been reported at the site dating back to the 1930s; however, the locations, sizes, and contents
of these systems could not be confirmed.

Volume
(gallons) Contents Install Remove Location Notes
2,000 diesel 1976 7/1998 NW corner Failed tightness, Closed in-place
4,000 gasoline 1981 7/1988 NW corner Failed tightness, removed
6,000 gasoline 1981 12/1994 NW corner
6,000 gasoline 1981 12/1994 NW corner
6,000 gasoline 7/1988 10/1988 NW corner Failed tightness, removed
6,000 gasoline 10/1998 12/1994 NW corner
12,000 gasoline 12/1994 In use SE corner
8,000 gasoline 12/1994 In use SE corner
8,000 diesel 12/1994 In use SE corner
270 unknown unknown 12/1994 unknown

Additional information regarding the site release summary is summarized in Table 1.

C.3 Previous Investigations

Information regarding the previous investigations is included in Table 1.

As part of an attempt to identify potential impacts in the site vicinity from the gas station (Cruizers)
located 10525 US Highway 64 East, Apex (northwest of the site), Terracon completed a NCDEQ file
Wilsonville General Store
Wilsonville, North Carolina
Terracon Project No. 70149669A
Incident No. 3534
December 23, 2019

Responsive ■ Resourceful ■ Reliable 5
review (Terracon, 2016). However, based on reviewed available information, it was inconclusive if
the Cruizers gas station facility was contributing impacts in the site vicinity (Terracon, 2016).
Additional information following the 2017 renovations of the Cruizers gas station facility was not
available during the most recent NCDEQ file review conducted by Terracon.

C.4 Water Supply Wells
Eight water supply wells are located within 1,000 feet of the source area and three currently serve as
potable water sources. Water supply well WSW-1 is located on-site. WSW-3 and WSW-5 previously
had point of entry (POE) systems.

Municipal water is available to properties within 1,500 feet of the source area via Chatham County’s
Public Utilities Department. The WSW-4 (Grill-N-Go), WSW-5 (Cruizers/Mobil), WSW-6, and
WSW-7 properties are currently connected to the municipal water system.

A letter was previously sent to the WSW-1 property owner regarding abandoning the water supply
well and connecting the property to municipal water. In a subsequent phone call with Terracon and
the property owner, he declined the offer to connect to municipal water due to concerns that chlorine
in municipal water may kill the bait fish in his fish tanks (Terracon, 2016). Terracon contacted the
property owner again in October 2019 to confirm his stance regarding municipal water line
connection. He indicated that he was concerned with the potential monthly costs of the water bill and
declined the offer to connect to municipal water.

In July 2019, with the owners’ agreement to NCDEQ’s request, Terracon connected the properties
containing WSW-6 and WSW-7 to the municipal water system. WSW-6 and WSW-7 are currently
inactive. Terracon is currently in the process of coordinating the abandonment of WSW-6 and WSW-
7.

With the exception of WSW-1, the water supply wells are generally located topographically
up-gradient in relation to the site source area. Results of the water-supply well inventory are
presented in Table 2 and well locations are depicted on Figure 3.
D. ASSESSMENT INFORMATION
D.1 Free Product Evaluation
Free product was not encountered in the on-site monitoring wells during this assessment and has
not been encountered on-site since 2004.

D.2 Groundwater Sampling Activities
Terracon mobilized to the site on November 4 and 20, 2019 to conduct groundwater sampling, as
requested by the NCDEQ. Terracon sampled five on-site monitoring wells (MW-5r, MW-6r, MW-8r,
MW-15, MW-16). Monitoring wells MW-17 and MW-18 could not be located and appear to have been
paved over; therefore, these wells were not sampled.
Wilsonville General Store
Wilsonville, North Carolina
Terracon Project No. 70149669A
Incident No. 3534
December 23, 2019

Responsive ■ Resourceful ■ Reliable 6
Prior to sample collection, Terracon gauged the groundwater elevations in the on-site monitoring
wells. The approximate locations of the wells are shown on the Site Plan (Figure 2). Current
groundwater elevation measurements are provided in Table 3. The groundwater flow direction was
estimated to the northeast based on the measured groundwater elevations. Groundwater elevations
for the most recent sampling event are depicted on Figure 4. Copies of field notes are provided in
Appendix A.

Prior to sampling, the wells were purged with a peristaltic pump using low flow sampling techniques
(i.e., <200 milliliters per minute) prior to sampling. Field parameters consisting of pH, temperature,
oxidation-reduction potential (ORP), 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.

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
Shealy Environmental Services, Inc., in West Columbia, South Carolina for analysis of VOCs by EPA
Method 6200B including xylenes, MTBE, EDB, and IPE.

D.3 Monitoring Well Analytical Results
Based on the laboratory analytical reports, one petroleum constituent (benzene) was identified at a
concentration above its 2L standard in MW-15. Concentrations were not detected above gross
contamination levels (GCLs).

1,2-DCA and EDB have historically been detected in on-site groundwater. According to the ITRC PVI
guidance, 1,2-DCA and EDB are considered to be precluding factors; therefore, additional evaluation
of the PVI pathway for the dissolved-phase plume is warranted.

Petroleum constituents detected in the groundwater are depicted on Figure 5. The groundwater
analytical results from the monitoring wells are summarized in Table 4. Copies of the laboratory
analytical reports are provided in Appendix B.

D.4 Water Supply Well Sampling Activities
Terracon mobilized to the site on November 4 and 20, 2019 to attempt to conduct groundwater
sampling at seven water supply wells WSW-1 through WSW-3 and WSW-8.

The groundwater samples were collected from the water supply wells 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. Samples were collected from WSW-1, WSW-2, and WSW-3. WSW-8 was
reportedly inactive.

Wilsonville General Store
Wilsonville, North Carolina
Terracon Project No. 70149669A
Incident No. 3534
December 23, 2019

Responsive ■ Resourceful ■ Reliable 7
D.5 Water Supply Well Analytical Results
Based on the laboratory analytical reports, IPE and MTBE were detected above laboratory reporting
limits, but below their 2L standards in WSW-1. Other VOCs were not detected above their laboratory
reporting limits in the water supply wells sampled.

The groundwater analytical results from the water supply wells are summarized in Table 4. A copy
of the laboratory analytical report is provided in Appendix B.
E. CONCLUSIONS AND RECOMMENDATIONS
Based on information obtained during the completion of groundwater monitoring activities, Terracon
provides the following conclusions and findings:

◼ Five on-site monitoring wells were sampled (MW-5r, MW-6r, MW-8r, MW-15, and MW-16) and
three water supply well was sampled (WSW-1, WSW-2, and WSW-3). MW-17 and MW-18
could not be located and appear to have been paved over. WSW-8 reportedly is inactive.
◼ One petroleum constituent (benzene) was identified at a concentration above its 2L standard in
on-site monitoring well MW-15. GCL exceedances were not identified in the sampled
monitoring wells.
◼ Measurable thicknesses of free product were not observed in the monitoring wells. Free
product thicknesses have not been measured on-site since 2004.
◼ IPE and MTBE were identified at a concentration below their 2L standards in water supply well
WSW-1. Other VOCs were not detected above laboratory reporting limits in the sampled water
supply wells.
◼ In July 2019, with the owners’ agreement to NCDEQ’s request, Terracon connected the
properties containing WSW-6 and WSW-7 to the municipal water system. WSW-6 and WSW-7
are currently inactive. Terracon is currently in the process of coordinating the abandonment of
WSW-6 and WSW-7.
◼ Eight water supply wells are located within 1,000 feet of the source area. Three currently serve
as potable water sources while five are currently inactive. Municipal water is available to
properties within 1,000 feet of the source area. The active potable water supply wells are
generally located topographically up-gradient in relation to the site source area.
◼ The horizontal and vertical extents of the plume have not been delineated.
◼ 1,2-DCA and EDB have historically been detected in on-site groundwater. According to the
ITRC PVI guidance, 1,2-DCA and EDB are considered to be precluding factors; therefore,
additional evaluation of the PVI pathway for the dissolved-phase plume is warranted.
A preliminary evaluation was conducted by comparing groundwater concentrations with the
NCDEQ Residential and Non-Residential VI-GWSLs. Compounds detected during recent
sampling events exceed their respective VI-GWSL; therefore, additional evaluation of the PVI
pathway for the dissolved-phase plume is warranted.
Wilsonville General Store
Wilsonville, North Carolina
Terracon Project No. 70149669A
Incident No. 3534
December 23, 2019

Responsive ■ Resourceful ■ Reliable 8
Based on the data presented in this subsequent monitoring report, Terracon recommends the
following activities be completed at the site.

◼ In lieu of horizontally and vertically delineating the plume, Terracon recommends eliminating
receptors by establishing municipal water hook-ups.
◼ Water supply well WSW-1 (on-site) (which has detectable concentrations of IPE and MTBE)
should be properly abandoned and the property connected to the municipal water system.
Terracon requested the owner of WSW-1 agree to abandon the water supply well and
connect the property to municipal water. The property owner historically has declined;
however, Terracon will continue to request the connection of the WSW-1 in the future.
◼ Inactive water supply wells WSW-6 and WSW-7 should be properly abandoned. Terracon is
currently in the process of coordinating the abandonment of these two water supply wells.
◼ Active potable water supply wells located within 1,000 feet of the source area (WSW-1,
WSW-2, and WSW-3) should be sampled quarterly.
◼ The monitoring well network should be sampled semi-annually.
◼ Terracon recommends collection of soil gas samples to evaluate the potential for vapor
intrusion.
F. REFERENCES
◼ S&ME, 1987 – Pre-Purchase Site Assessment, August 1987
◼ Delta, 1988 – Initial Contamination Assessment Report, R&T Jones Oil Company, Wilsonville
General Store, November 1988
◼ EPA, 2014. “National Functional Guidelines for Superfund Organic Methods Data Review”.
EPA-540-R-014-002. August 2014.
◼ Kadence, 2010 – Groundwater Monitoring Report, Wilsonville General Store, RT Jones Oil
Company, March/April 2010
◼ Kadence, 2014 – Supply Well Sampling, Groundwater Monitoring Report, Wilsonville General
Store, RT Jones Oil Company, April 2014
◼ NCDEQ, 2014 – Memorandum, Recommendation for State Lead Cleanup, Wilsonville General
Store, June 2014
◼ Terracon, 2014 – Site Visit Letter Report, Wilsonville General Store (Incident #3534),
December 23014
◼ Terracon, 2015 – Site Visit and Receptor Survey Update Letter Report, Wilsonville General
Store, April 2015
◼ Terracon, 2016 – Subsequent Monitoring Report, Wilsonville General Store, November 2016
◼ Terracon, 2018 – Subsequent Monitoring Report, Wilsonville General Store, February 2018

FIGURES
Copyright:© 2013 National Geographic Society, i-cubed
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2401 Brentwood Drive, Suite 107 Raleigh, NC 27612
Site Location Map
Wilsonville General Store(Incident # 3534)10580 US Highway 64 EastWilsonville, North Carolina
USGS TOPOGRAPHIC MAPMERRY OAKS, NC 1993& NEW HILL, NC 2002
1,000 0 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10,000500Feet
CONTOUR INTERVAL 10 FEET
ALF 70149669A
CMP
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MTJ Nov 2019 Phone: [phone] Fax: [phone]
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Wilsonville General StoreIncident Number: 353410580 US Highway 64Wilsonville, Chatham County, North Carolina
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FIGURENO.
U.S. HIGHWAY 64
Beaver Creek RoadStore
Legend
@A Monitoring Well (could not locate)
@A Monitoring Well
Dispenser Island
Propane Tank
Current UST
Diesel Dispenser
Former Dispenser
Former UST
Gasoline Dispenser
Site Boundary
Chatham County Tax Parcels010050Feet
MW-18
MW-17
MW-16
MW-5r
MW-15
MW-6r
MW-8r
70149669A
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U.S. Highway 64
Beaver Creek RoadWSW-7
WSW-6
WSW-5
WSW-4 WSW-1
WSW-3
WSW-8
WSW-2
1,500 ft
1,000 ft
500 ft
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Water Supply Well Location Map
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Wilsonville General StoreIncident Number: 353410580 US Highway 64Wilsonville, Chatham County, North Carolina
Legend
&>Active Water Suppy Well
&>Inactive Water Supply Well
Municipal Water Line
Cruizers/Mobil Gas Station
Site Boundary
Chatham County Tax Parcels01,000500Feet
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70149669A
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Groundwater Flow Map (November 2019)
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Wilsonville General StoreIncident Number: 353410580 US Highway 64Wilsonville, Chatham County, North Carolina
U.S. HIGHWAY 64
Beaver Creek RoadStore
0 10050Feet
MW-18
MW-17
MW-16MW-5r
MW-15
MW-6r
MW-8r
Not Measured
Not Measured
272.88
278.39
276.21
275.47
266.41
Figure No.
4
278.00
276.00 274.00
Legend
@A Monitoring Well
Dispenser IslandPropane TankCurrent USTDiesel DispenserFormer Dispenser Former USTGasoline DispenserSite Boundary
280.00groundwater elevation(feet above sea level)
Estimated GroundwaterFlow DirectonGroundwater Contour (dashed where inferred)
278.00 276.00 274.00
70149669A
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Groundwater Analytical Results (November 2019)
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Wilsonville General StoreIncident Number: 353410580 US Highway 64Wilsonville, Chatham County, North Carolina
U.S. HIGHWAY 64
Beaver Creek RoadStore
0 10050Feet
MW-18NS
FigureNo.
5
Wooded
Wooded
MW-17NS
MW-16BDL
MW-8rEthylbenzene - 0.95p-Isopropyltoluene - 0.51Methyl tert-Butyl Ethyl (MTBE) - 4.2Napthalene - 1.6n-Propylbenzene - 0.40 J1,2,4-Trimethylbenzene - 2.11,3,5-Trimethylbenzene - 0.55Xylenes (total) - 1.72
MW-6rDi-isopropyl Ether (IPE) - 58Methyl tert-Butyl Ethyl (MTBE) - 9.2
MW-15Benzene - 12Diisopropyl Ether (IPE) - 7.4Napthalene - 1.2Xylenes (total) - 0.92 J
MW-5rDi-isopropyl Ether - 3.8Isopropylbenzene - 1.4Methyl tert-Butyl Ethyl (MTBE) - 4.1
Legend
@A Monitoring Well
Road
Dispenser Island
Current UST
Diesel Dispenser
Former Dispenser
Former UST
Gasoline Dispenser
Site Boundary
Notes:Concentration in micrograms per liter (μg/L)BDL = Below laboratory detection limitBold = 2L exceedancesNS = Not SampledJ = Estimated Values
Legend
Pavement
Store
Propane Tank
70149669A
WSW-1Di-isopropyl Ether (IPE) - 5.2Methyl tert-Butyl Ethyl (MTBE) - 7.4

TABLES
Three 6,000-gal gasoline USTs, one 4,000-gal gasoline UST, and one 2,000-gal diesel UST
Former dispensers replaced in 1988 and removed in 1994
Former piping removed in 1994
NA
Triassic
Residual Impacts
Extent
Contaminants of Concern
Concentrations
Soil Type Clay
Residual Impacts Yes
Extent Vicinity of UST excavation
Contaminants of Concern Gasoline and diesel compounds
Concentrations Above commercial MSCCs in 1987
Soil Type Primarily clay
Source to GW?Yes
NAPL Present? Residual or Mobile?
Free product not detected in monitoring wells since 2004
Depth to Groundwater approximately 8 to 13 feet below land surface
Hydraulic Conductivity Site specific not evaluated, ~10-3 to 101 feet per day based on soil type
Delineated? If so, extent?Not delineated to east of the site and the north of the source area; not delineated vertically
Extend Off-Site?Extends off-site to north under Highway 64
Contaminants of Concern Benzene, MTBE, and other gasoline compounds
Concentrations Less than four orders of magnitude above 2L Standard and below GCLs since at least 2016
Trends Generally stable
Horizontal Gradient Approximately 0.04-0.07 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 200 feet northeast (an unnamed tributary of Jordan Lake)
Lateral Distance from Impacts to Building ~10 feet northeast to the on-site convenience store
Depth to GW approximately 8 to 13 feet below land surface
Precluding Factors Present? Specify.
Historical EDB detections (lead scavenger)
Precluding Factors Present? Specify.
Historical EDB detections (lead scavenger)
GW Concentrations > VISLs?Yes, Exceedance in recent sampling events
Exterior Soil Gas Concentrations >VISLs?
Sub-Slab Concentrations > VISLs?
Indoor Air Concentrations > VISLs?
Is the VI Pathway Complete?
Over-excavation was reportedly not conducted during the UST removal operations in 1988.
Over-excavation was reportedly not conducted during the UST removal operations in 1988.
A groundwater pump and treat system was installed in March 1990 and dismantled in 1995
Number within 250 feet 2 (1 potable, on-site active well; 1 inactive)
Number within 250-500 feet 5 (4 potable; 1 inactive)
Number within 500-1,000 feet 1 (potable)
Groundwater plume generally delineated except to the north and east.
Current on-site structures
Active gasoline station and convenience store
Not evaluated - need to evaluate current conditions
NAPL and/or >GCLs NAPL and GCL exceedances not present
Water Supply Wells Abandon wells within 500 ft - in process
Not evaluated - need to sample surface water to evaluate current conditionsSample to assess VI Pathway
Notes:
MSCC: NCDEQ maximum soil contaminant concentrations UST: underground storage tank
2L Standard: 15A NCAC 2L groundwater quality standards NA: not applicable
GCL: NCDEQ gross contamination levels GW: groundwater
VISL: NCDEQ vapor intrusion screening levels BTEX: benzene, toluene, ethylbenzene, xylenes
NAPL: non-aqueous phase liquid MMPE: mobile multiphase extraction
VI: Vapor IntrusionSourceAreasUST(s)
Dispensers
Piping
Other
Not Sampled
SubsurfaceGroundwaterSurficialNot Sampled
BedrockSoilPhysiographic Province
Surficial11/20/2019SurfaceWaterDistance from Source
Contaminants of Concern
Concentrations
Groundwater or Surficial Source?Soil VaporScreeningAssessmentTerracon Project No. 70149669A
Not Sampled
Closure PathwayCurrent/Proposed Property Use
Soil
GWSurface Water
Vapor Intrusion
Not Sampled
RemediationSoil (Type, When, Successful?)
Groundwater (Type, When, Successful?)ReceptorsWSWsSurface Water (Modeling/Screening or Empirical)
Vapor Intrusion (Modeling/Screening or Empirical)
Table 1
Conceptual Site Model
Wilsonville General Store
Wilsonville, North Carolina
NCDEQ Incident No. 3534
WSW-1 Vossie Lee Horton 193 John Horton Road
Apex, NC 27502
10580 US Highway 64 E
Apex, NC 27502 190 feet / southwest Potable 0702-00-02-0765 Municipal water available, but not connected; declined
offer to connect to municipal water system
WSW-2 Gregory Arthur Stephenson 103 S. Salem Street
Apex, NC 27502
153 Beaver Creek Road
Apex, NC 27502
640 feet /
south-southwest Potable 9792-00-92-3092 Municipal water available, but not connected
WSW-3 Judith Intrator 203 Crossmore Drive
Cary, NC 27915
86 Beaver Creek Road
Apex, NC 27502 370 feet / southwest Potable 9792-00-92-5519 Municipal water available, but not connected; POE
system in-place, but currently disconnected
WSW-4 Apex Nurseries 2551 Holland Chapel Road
Apex, NC. 27523
10544 US Highway 64 E
Apex, NC 27502
210 feet / west-
southwest Inactive 9792-92-6875 Connected to municipal water
WSW-5 Liberty Enterprises, Inc.2208 Oak Stream Lane
Apex, NC 27523
10525 US Highway 64 E
Apex, NC 27502 490 feet / northwest Inactive 9792-00-93-7215
Connected to municipal water following the construction
of the new Cruzier's gas station. Manager confirmed
that the water supply well still exists on the property,
however power has been disconnected from the well.
WSW-6 Grizelle McNeill Heirs &
Annie F. Kelley
C/O Kenneth Allsbrook
164 Alston Road
Apex, NC 27523
18 Beaver Creek Road
Apex, NC 27502 435 feet / north Inactive 9792-00-93-9038 Connected to municipal water
WSW-7 Grizelle McNeill Heirs &
Annie F. Kelley
C/O Kenneth Allsbrook
164 Alston Road
Apex, NC 27523
10681 US Highway 64 E
Apex, NC 27502 565 feet / northeast Inactive 9792-00-93-9038 Connected to municipal water
WSW-8 Judtith Intrator 203 Crossmore Drive
Cary, NC 27915
86 Beaver Creek Road
Apex, NC 27502 430 feet / southwest Inactive 9792-00-92-5519 Municipal water available, but not connected
Table 2
Water Supply Well Information
Wilsonville General Store
Wilsonville, North Carolina
Terracon Project Number 70149669A
NCDEQ Incident No. 3534
Well Status/Use Parcel ID NotesWell No.Property Owner Mailing Address Property Address Distance/Directions
from source area
Well ID Date Installed
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 msl)
Depth to Water
from Top of
Casing (ft.)
Groundwater
Elevation
(ft msl)Comments
5/11/2016 8.54 277.54
4/26/2017 9.59 276.49
1/9/2018 10.29 275.79
11/4/2019 9.87 276.21
5/11/2016 10.81 276.28
4/26/2017 11.36 275.73
1/9/2017 13.46 273.63
11/4/2019 11.62 275.47
5/11/2016 11.24 270.21
4/26/2017 13.22 268.23
1/9/2018
11/4/2019 15.04 266.41
5/11/2016 8.93 279.20
4/26/2017 9.23 278.90
1/9/2018 10.54 277.59
11/4/2019 9.74 278.39
5/11/2016 8.31 275.89
4/26/2017 10.52 273.68
1/9/2018 12.77 271.43
11/4/2019 11.32 272.88
5/11/2016 4.54 280.31
4/26/2017 6.02 278.83
1/9/2018
11/4/2019
5/11/2016 8.11 282.26
4/26/2017 10.31 280.06
1/9/2018 12.84 277.53
11/4/2019
Notes:
"-" Indicates, free product was not measured
NA - Not available
BGS - Below ground surface
ft msl - feet mean sea level
Top-of-casing elevations were professionally surveyed
MW-5r
Terracon Project No. 70149669A
Table 3
Monitoring Well Construction and Historical Groundwater Elevations
Wilsonville General Store
Wilsonville, North Carolina
NCDEQ Incident No. 3534
Type II5/3/2016 7 7-17 17.0 286.08
MW-6r 5/3/2016 7 7-17 17.0
MW-15 5/4/2016
MW-8r 5/3/2016
Type II
Type II
Type II1010-20 20.0 288.13
287.09
5 5-15 15.0 281.45 Dry
Type II
MW-17 5/2/2016 15 15-25 25.0 284.85 Type II
MW-16 5/4/2016 7 7-17 17.0
Paved Over
Paved Over
284.20
Type IIMW-18 5/3/2016 10 10-20 20.0
Could not locate
290.37
Well/Sample
I.D.
Date Collected
(mm/dd/yy)
05/12/16 <0.50 <0.50 <0.50 <0.50 0.19 J NA <0.50 <0.5 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 0.95 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50
04/26/17 <0.50 <0.50 <0.50 <0.50 <0.50 NA <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 0.6 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50
01/09/18 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 0.59 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50
11/04/19 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 3.8 <0.50 1.4 <0.50 4.1 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50
05/12/16 7.0 <0.50 <0.50 <0.50 <0.50 NA <0.50 <0.50 8.0 0.76 190 3.7 0.47 J <0.50 30 2.9 0.4 J <0.50 0.92 J 0.92 0.33 J 4.8
04/26/17 <0.50 <0.50 <0.50 <0.50 <0.50 NA <0.50 <0.50 7.4 0.51 160 <0.50 <0.50 <0.50 24 <0.50 <0.50 <0.50 0.54 <0.50 <0.50 <0.50
01/09/18 <0.50 <0.50 <0.50 <0.50 <0.50 0.63 <0.50 <0.50 <0.50 0.55 170 <0.50 <0.50 <0.50 28 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50
11/04/19 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 58 <0.50 <0.50 <0.50 9.2 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50
05/12/16 <2.50 <2.50 <2.50 <0.50 <2.50 NA <2.50 <2.50 <2.50 <2.50 <2.50 <2.50 <2.50 4.0 <2.50 290 B <2.50 <2.50 1.8 J <2.50 <2.50 <2.50
04/26/17 <0.50 <0.50 <0.50 <0.50 <0.50 NA <0.50 <0.50 <0.50 <0.50 <0.50 0.96 <0.50 0.73 0.69 200 <0.50 <0.50 1.1 1.8 0.85 1.91
01/09/18
11/04/19 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 0.95 <0.50 0.51 4.2 1.6 0.40 J <0.50 <0.50 2.1 0.55 1.72
05/12/16 97 <0.50 0.46 J 0.37 J <0.50 NA <0.50 0.59 7.3 0.51 92 21 2.9 1.8 0.67 3.5 4.7 1.6 25 49 60 91
04/26/17 <0.50 <0.50 <0.50 <0.50 <0.50 NA <0.50 <0.50 <0.50 <0.50 0.8 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50
01/09/18 4.1 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 10 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 1.3 <0.50 4.8
11/04/19 12 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 7.4 <0.50 <0.50 <0.50 <0.50 1.2 <0.50 <0.50 <0.50 <0.50 <0.50 0.92 J
05/12/16 <0.50 <0.50 0.32 J <0.50 <0.50 NA <0.50 <0.50 <0.50 <0.50 5.3 <0.50 2.3 <0.50 27 0.66 B 0.18 J <0.50 <0.50 <0.50 <0.50 0.36 J
04/26/17 <0.50 <0.50 <0.50 <0.50 <0.50 NA <0.50 <0.50 <0.50 <0.50 4.7 <0.50 2.4 <0.50 13 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50
01/09/18 <0.50 5.1 2.0 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 6.0 0.43J 1.6 3.4 6.8 0.59 <0.50 <0.50 <0.50 0.45J 0.46J <0.50
11/04/19 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50
05/12/16 <0.50 <0.50 <0.50 <0.50 <0.50 NA <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50
04/26/17 <0.50 <0.50 <0.50 <0.50 <0.50 NA <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50
01/09/18
11/04/19
05/12/16 <0.50 <0.50 <0.50 <0.50 <0.50 NA <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50
04/26/17 <0.50 <0.50 <0.50 <0.50 <0.50 NA <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50
01/09/18 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50
11/04/19
1 70 70 70 50 3,000 3 0.02 0.4 0.6 70 600 70 25 20 6 70 70 600 400 400 500
5,000 6,900 8,500 15,000 50,000 NE 3,000 50 400 600 70,000 84,500 25,000 11,700 20,000 6,000 30,000 70,000 260,000 28,500 25,000 85,500
16 NE NE NE 82 4,600 52 1.8 22 NE 1,400 35 180 NE 4,500 35 180 1,900 3,800 70 35 77
69 NE NE NE 340 19,000 220 7.7 98 29 5,900 150 750 NE 20,000 150 750 7,800 16,000 210 120 320
Notes: Results in micrograms per liter (µg/L)
ND = not detected
Grey shading denotes concentrations equal to or greater than the 15A NCAC 2L groundwater standard (2L standard)Exceeds both 2L Standard and Residential VISL
Yellow shading denotes concentrations equal to or greater than the gross contamination level.Exceeds both 2L Standard and Commercial VISL
J = estimated concentration below the quantification limit and above the method detection limit.
B = detected in the method blank
U = qualified as non-detected based on method blank concentration
NA = Not Analyzed
NE = Not Established
VISLs = Vapor Intrusion Screening Levels - Groundwater Screening Level (GWSL) - NCDEQ October 2017
2L Standard (µg/L)
GCL (µg/L)
Residential VISLs (µg/L)
Non-Residential VISLs (µg/L)n-PropylbenzeneTable 4
Summary of Groundwater Analytical Results
Wilsonville General Store
Terracon Project Number 70149669A
Wilsonville, North Carolina
NCDEQ Incident No. 3534
MW-17
Analytical Method EPA Method 6200B
Contaminant of Concern →Benzenen-Butylbenzenesec-Butylbenzene1,3,5-TrimethylbenzeneXylenes (Total)NaphthaleneMW-6r Chloromethane1,2-Dibromoethane (EDB)1,2-DichloroethaneDi-isopropyl Ether (IPE)TolueneStyreneEthylbenzeneIsopropylbenzenep-Isopropyltoluene1,2,4-TrimethylbenzeneMethyl tert-Butyl Ether (MTBE)Chlorobenzene1,2-Dichloropropanetert-ButylbenzeneMW-5r ChloroethaneDry
Not sampled - could not locate
Not Sampled - Paved Over
Not Sampled - Paved Over
MW-18
MW-8r
MW-15
MW-16
Well/Sample
I.D.
Date Collected
(mm/dd/yy)
03/11/14 ND ND ND ND ND NA ND ND ND ND <0.52 ND ND ND 12 ND ND ND ND ND ND ND
04/29/15 <0.50 <0.50 <0.50 <0.50 <0.50 NA <0.50 <0.50 <0.50 <0.50 <0.53 <0.50 <0.50 <0.50 11.5 <2.0 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0
12/07/15 <0.50 <0.50 <0.50 <0.50 <0.50 NA <0.50 <0.50 <0.50 <0.50 <0.54 <0.50 <0.50 <0.50 14 <2.0 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0
05/11/16 <0.50 <0.50 <0.50 <0.50 <0.50 NA <0.50 <0.50 <0.50 <0.50 6.1 <0.50 <0.50 <0.50 9.2 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50
04/26/17 <0.50 <0.50 <0.50 <0.50 <0.50 NA <0.50 <0.50 <0.50 <0.50 4.9 <0.50 <0.50 <0.50 6.9 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50
11/04/19 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 5.2 <0.50 <0.50 <0.50 7.4 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50
04/29/15 <0.50 <0.50 <0.50 <0.50 <0.50 NA <0.50 <0.50 <0.50 <0.50 <0.56 <0.50 <0.50 <0.50 <0.50 <2.0 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0
12/07/15 <0.50 <0.50 <0.50 <0.50 <0.50 NA <0.50 <0.50 <0.50 <0.50 <0.57 <0.50 <0.50 <0.50 <0.50 <2.0 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0
05/11/16 <0.50 <0.50 <0.50 <0.50 <0.50 NA <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50
04/26/17 <0.50 <0.50 <0.50 <0.50 <0.50 NA <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50
11/20/19 <0.50 <0.50 <0.50 <0.50 <0.50 NA <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50
WSW-3 Influent 04/29/15 <0.50 <0.50 <0.50 <0.50 <0.50 NA <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 0.97 <2.0 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0
WSW-3 Effluent 04/29/15 <0.50 <0.50 <0.50 <0.50 <0.50 NA <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 1.4 <2.0 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0
12/07/15 <0.50 <0.50 <0.50 <0.50 <0.50 NA <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 1.9 <2.0 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0
05/11/16 <0.50 <0.50 <0.50 <0.50 <0.50 NA <0.50 <0.50 0.19 BJU <0.50 <0.50 <0.50 <0.50 <0.50 0.26 J <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50
04/26/17 <0.50 <0.50 <0.50 <0.50 <0.50 NA <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 0.92 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50
01/11/18 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 1.0 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50
11/20/19 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50
04/29/15 <0.50 <0.50 <0.50 <0.50 <0.50 NA <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 0.46 J <2.0 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0
12/07/15 <0.50 <0.50 <0.50 <0.50 <0.50 NA <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 0.35 J <2.0 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0
05/11/16 <0.50 <0.50 <0.50 <0.50 <0.50 NA <0.50 <0.50 0.16 BJU <0.50 <0.50 <0.50 <0.50 <0.50 1 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50
04/26/17 <0.50 <0.50 <0.50 <0.50 <0.50 NA <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50
03/11/14 ND ND ND ND ND NA ND ND ND ND ND ND ND ND 1.6 ND ND ND ND ND ND ND
04/29/15 <0.50 <0.50 <0.50 <0.50 <0.50 NA <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 1.6 <2.0 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0
12/07/15 <0.50 <0.50 <0.50 <0.50 <0.50 NA <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 1.0 <2.0 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0
05/11/16 <0.50 <0.50 <0.50 <0.50 <0.50 NA <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 0.94 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50
01/11/18 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 1.9 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50
03/11/14 ND ND ND ND ND NA ND ND ND ND ND ND ND ND 52 ND ND ND ND ND ND ND
04/29/15 <0.50 <0.50 <0.50 <0.50 <0.50 NA <0.50 <0.50 <0.50 <0.50 1.5 <0.50 <0.50 <0.50 44 <2.0 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0
12/07/15 <0.50 <0.50 <0.50 <0.50 <0.50 NA <0.50 <0.50 <0.50 <0.50 1.3 <0.50 <0.50 <0.50 52 <2.0 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0
05/11/16 <0.50 <0.50 <0.50 <0.50 <0.50 NA <0.50 <0.50 0.21 BJU <0.50 1.1 <0.50 <0.50 <0.50 46 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50
04/26/17 <0.50 <0.50 <0.50 <0.50 <0.50 NA <0.50 <0.50 <0.50 <0.50 0.99 <0.50 <0.50 <0.50 31 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50
01/11/18 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 0.89 <0.50 <0.50 <0.50 30 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50
04/29/15 <0.50 <0.50 <0.50 <0.50 <0.50 NA <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <2.0 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0
12/07/15 <0.50 <0.50 <0.50 <0.50 <0.50 NA <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <2.0 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0
05/11/16 <0.50 <0.50 <0.50 <0.50 <0.50 NA <0.50 <0.50 0.16 BJU <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50
04/26/17 <0.50 <0.50 <0.50 <0.50 <0.50 NA <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50
01/11/18 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50
1 70 70 70 50 3,000 3 0.02 0.4 0.6 70 600 70 25 20 6 70 70 600 400 400 500
5,000 6,900 8,500 15,000 50,000 NE 3,000 50 400 600 70,000 84,500 25,000 11,700 20,000 6,000 30,000 70,000 260,000 28,500 25,000 85,500
16 NE NE NE 82 4,600 52 1.8 22 NE 1,400 35 180 NE 4,500 35 180 1,900 3,800 70 35 77
69 NE NE NE 340 19,000 220 7.7 98 29 5,900 150 750 NE 20,000 150 750 7,800 16,000 210 120 320
Notes: Results in micrograms per liter (µg/L)
ND = not detected
Grey shading denotes concentrations equal to or greater than the 15A NCAC 2L groundwater standard (2L standard)Exceeds both 2L Standard and Residential VISL
Yellow shading denotes concentrations equal to or greater than the gross contamination level.Exceeds both 2L Standard and Commercial VISL
J = estimated concentration below the quantification limit and above the method detection limit.
B = detected in the method blank
U = qualified as non-detected based on method blank concentration
NA = Not Analyzed
NE = Not Established
VISLs = Vapor Intrusion Screening Levels - Groundwater Screening Level (GWSL) - NCDEQ October 2017 Toluene1,2,4-Trimethylbenzene1,3,5-TrimethylbenzeneXylenes (Total)p-IsopropyltolueneMethyl tert-Butyl Ether (MTBE)Naphthalenen-PropylbenzeneStyreneAnalytical Method EPA Method 6200B
Contaminant of Concern →Benzenen-Butylbenzenesec-Butylbenzenetert-ButylbenzeneChlorobenzeneChloroethaneChloromethane1,2-Dibromoethane (EDB)1,2-Dichloroethane1,2-DichloropropaneDi-isopropyl Ether (IPE)EthylbenzeneIsopropylbenzeneSummary of Groundwater Analytical Results
Wilsonville General Store
Wilsonville, North Carolina
NCDEQ Incident No. 3534
Terracon Project Number 70149669A
Table 4
Residential VISLs (µg/L)
Non-Residential VISLs (µg/L)
WSW-6
WSW-2
WSW-3
WSW-1
GCL (µg/L)
WSW-5 Effluent
WSW-7
WSW-8
2L Standard (µg/L)

APPENDIX A
FIELD NOTES AND PHOTOGRAPHS

Subsequent Monitoring Report
Wilsonville General Store (Incident #3534) ■ Wilsonville, North Carolina
Photos Taken: November 4, 2019 ■ Terracon Project No. 70149669A

Photo #1 View of monitoring well MW-6r.

Photo #2 View of monitoring well MW-5r.
Subsequent Monitoring Report
Wilsonville General Store (Incident #3534) ■ Wilsonville, North Carolina
Photos Taken: November 4, 2019 ■ Terracon Project No. 70149669A

Photo #3 View of monitoring well MW-16.

Photo #4 View of monitoring well MW-8r.
Subsequent Monitoring Report
Wilsonville General Store (Incident #3534) ■ Wilsonville, North Carolina
Photos Taken: November 4, 2019 ■ Terracon Project No. 70149669A

Photo #5 View of propane storage tank behind store on site.

Photo #6 View of monitoring well MW-16

Subsequent Monitoring Report
Wilsonville General Store (Incident #3534) ■ Wilsonville, North Carolina
Photos Taken: November 4, 2019 ■ Terracon Project No. 70149669A

Photo #7 General view of site from southern site border

Photo #8 View of spigot connected to WSW-1.

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

SHEALY ENVIRONMENTAL SERVICES,INC.
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 Shealy Environmental Services,Inc.
Shealy Environmental Services,Inc.
106 Vantage Point Drive West Columbia,SC 29172 [phone] Fax [phone] www.shealylab.com
Report of Analysis
Terracon Consultants,Inc.
2401 Brentwood Road
Suite 107 I
Raleigh,NC 27604
Attention:Will Frazier
Project Name:Wilsonville General Store
Project Number:70149669A
Lot Number:UK05013
Date Completed:11/08/2019
11/11/2019 6:18 PM
Approved and released by:
Project Manager:Cathy S.Dover
Page 1 of 24
SHEALY ENVIRONMENTAL SERVICES,INC.
SC DHEC No:32010001 NELAC No:E87653 NC DENR No:329 NC Field Parameters No:5639
Shealy Environmental Services,Inc.
106 Vantage Point Drive West Columbia,SC 29172 [phone] Fax [phone] www.shealylab.com
Case Narrative
Terracon Consultants,Inc.
Lot Number:UK05013
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 NELAC standards,the Shealy Environmental Services,Inc.("Shealy")Quality
Assurance Management Plan (QAMP),standard operating procedures (SOPs),and Shealy policies.Any
exceptions to the NELAC standards,the QAMP,SOPs or policies are qualified on the results page or
discussed below.
If you have any questions regarding this report please contact the Shealy Project Manager listed on the
cover page.
Page 2 of 24
SHEALY ENVIRONMENTAL SERVICES, INC.
Sample Summary
Terracon Consultants, Inc.
Lot Number: UK05013

Project Name: Wilsonville General Store
Project Number: 70149669A
Sample Number Sample ID Matrix Date Sampled Date Received
001 11/04/2019 1218MW-5r Aqueous 11/05/2019
002 11/04/2019 1110MW-6r Aqueous 11/05/2019
003 11/04/2019 1230MW-8r Aqueous 11/05/2019
004 11/04/2019 1108MW-15 Aqueous 11/05/2019
005 11/04/2019 1216MW-16 Aqueous 11/05/2019
006 11/04/2019Trip Blank Aqueous 11/05/2019
007 11/04/2019 1310WSW-1 Aqueous 11/05/2019
(7 samples)
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.shealylab.com
Shealy Environmental Services, Inc.

Page 3 of 24
SHEALY ENVIRONMENTAL SERVICES, INC.
Detection Summary
Terracon Consultants, Inc.
Lot Number: UK05013

Project Name: Wilsonville General Store
Project Number: 70149669A
Sample Sample ID Matrix Parameter Method Result Q Units Page
001 MW-5r Aqueous Diisopropyl ether (IPE)SM 6200B-3.8 ug/L 5
001 MW-5r Aqueous Isopropylbenzene SM 6200B-1.4 ug/L 5
001 MW-5r Aqueous Methyl tertiary butyl ether SM 6200B-4.1 ug/L 5
002 MW-6r Aqueous Diisopropyl ether (IPE)SM 6200B-58 ug/L 7
002 MW-6r Aqueous Methyl tertiary butyl ether SM 6200B-9.2 ug/L 7
003 MW-8r Aqueous Ethylbenzene SM 6200B-0.95 ug/L 9
003 MW-8r Aqueous p-Isopropyltoluene (p-SM 6200B-0.51 ug/L 9
003 MW-8r Aqueous Methyl tertiary butyl ether SM 6200B-4.2 ug/L 9
003 MW-8r Aqueous Naphthalene SM 6200B-1.6 ug/L 9
003 MW-8r Aqueous n-Propylbenzene SM 6200B-0.40 J ug/L 9
003 MW-8r Aqueous 1,3,5-Trimethylbenzene SM 6200B-0.55 ug/L 10
003 MW-8r Aqueous 1,2,4-Trimethylbenzene SM 6200B-2.1 ug/L 10
003 MW-8r Aqueous m+p - Xylenes SM 6200B-0.62 ug/L 10
003 MW-8r Aqueous o - Xylenes SM 6200B-1.1 ug/L 10
004 MW-15 Aqueous Benzene SM 6200B-12 ug/L 11
004 MW-15 Aqueous Diisopropyl ether (IPE)SM 6200B-7.4 ug/L 11
004 MW-15 Aqueous Naphthalene SM 6200B-1.2 ug/L 11
004 MW-15 Aqueous m+p - Xylenes SM 6200B-0.44 J ug/L 12
004 MW-15 Aqueous o - Xylenes SM 6200B-0.48 J ug/L 12
007 WSW-1 Aqueous Diisopropyl ether (IPE)SM 6200B-5.2 ug/L 15
007 WSW-1 Aqueous Methyl tertiary butyl ether SM 6200B-7.4 ug/L 15
(21 detections)
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.shealylab.com
Shealy Environmental Services, Inc.

Page 4 of 24
Volatile Organic Compounds by GC/MS
Description:Matrix:
Date Received:
Client:Laboratory ID:
Date Sampled:
Terracon Consultants, Inc.
MW-5r
UK05013-001
11/04/2019 1218
11/05/2019
Aqueous
Project Name: Wilsonville General Store
Project Number: 70149669A
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 SM 6200B-SM 6200B-2011 1 11/06/2019 1229 TML 34759
AnalyticalCAS
Parameter Number Method Result Q LOQ Units Run DL
Benzene 71-43-2 SM 6200B-ND 1ug/L0.400.50
Bromobenzene 108-86-1 SM 6200B-ND 1ug/L0.400.50
Bromochloromethane 74-97-5 SM 6200B-ND 1ug/L0.400.50
Bromodichloromethane 75-27-4 SM 6200B-ND 1ug/L0.400.50
Bromoform 75-25-2 SM 6200B-ND 1ug/L0.400.50
Bromomethane (Methyl bromide)74-83-9 SM 6200B-ND 1ug/L0.400.50
n-Butylbenzene 104-51-8 SM 6200B-ND 1ug/L0.400.50
sec-Butylbenzene 135-98-8 SM 6200B-ND 1ug/L0.400.50
tert-Butylbenzene 98-06-6 SM 6200B-ND 1ug/L0.400.50
Carbon tetrachloride 56-23-5 SM 6200B-ND 1ug/L0.400.50
Chlorobenzene 108-90-7 SM 6200B-ND 1ug/L0.400.50
Chloroethane 75-00-3 SM 6200B-ND 1ug/L0.400.50
Chloroform 67-66-3 SM 6200B-ND 1ug/L0.400.50
Chloromethane (Methyl chloride)74-87-3 SM 6200B-ND 1ug/L0.400.50
2-Chlorotoluene 95-49-8 SM 6200B-ND 1ug/L0.400.50
4-Chlorotoluene 106-43-4 SM 6200B-ND 1ug/L0.400.50
Dibromochloromethane 124-48-1 SM 6200B-ND 1ug/L0.400.50
1,2-Dibromoethane (EDB)106-93-4 SM 6200B-ND 1ug/L0.400.50
Dibromomethane (Methylene bromide)74-95-3 SM 6200B-ND 1ug/L0.400.50
1,2-Dichlorobenzene 95-50-1 SM 6200B-ND 1ug/L0.400.50
1,3-Dichlorobenzene 541-73-1 SM 6200B-ND 1ug/L0.400.50
1,4-Dichlorobenzene 106-46-7 SM 6200B-ND 1ug/L0.400.50
Dichlorodifluoromethane 75-71-8 SM 6200B-ND 1ug/L0.400.50
1,1-Dichloroethane 75-34-3 SM 6200B-ND 1ug/L0.400.50
1,2-Dichloroethane 107-06-2 SM 6200B-ND 1ug/L0.400.50
1,1-Dichloroethene 75-35-4 SM 6200B-ND 1ug/L0.400.50
cis-1,2-Dichloroethene 156-59-2 SM 6200B-ND 1ug/L0.400.50
trans-1,2-Dichloroethene 156-60-5 SM 6200B-ND 1ug/L0.400.50
1,2-Dichloropropane 78-87-5 SM 6200B-ND 1ug/L0.400.50
1,3-Dichloropropane 142-28-9 SM 6200B-ND 1ug/L0.400.50
2,2-Dichloropropane 594-20-7 SM 6200B-ND 1ug/L0.400.50
1,1-Dichloropropene 563-58-6 SM 6200B-ND 1ug/L0.400.50
cis-1,3-Dichloropropene 10061-01-5 SM 6200B-ND 1ug/L0.400.50
trans-1,3-Dichloropropene 10061-02-6 SM 6200B-ND 1ug/L0.400.50
Diisopropyl ether (IPE)108-20-3 SM 6200B-3.8 1ug/L0.400.50
Ethylbenzene 100-41-4 SM 6200B-ND 1ug/L0.400.50
Hexachlorobutadiene 87-68-3 SM 6200B-ND 1ug/L0.400.50
Isopropylbenzene (Cumene)98-82-8 SM 6200B-1.4 1ug/L0.400.50
p-Isopropyltoluene (p-Cymene)99-87-6 SM 6200B-ND 1ug/L0.400.50
Methyl tertiary butyl ether (MTBE)1634-04-4 SM 6200B-4.1 1ug/L0.400.50
Methylene chloride 75-09-2 SM 6200B-ND 1ug/L0.400.50
Naphthalene 91-20-3 SM 6200B-ND 1ug/L0.400.50
n-Propylbenzene 103-65-1 SM 6200B-ND 1ug/L0.400.50
Styrene 100-42-5 SM 6200B-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
DL = Detection Limit
W = Reported on wet weight basis
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.shealylab.com
Shealy Environmental Services, Inc.

Page 5 of 24
Volatile Organic Compounds by GC/MS
Description:Matrix:
Date Received:
Client:Laboratory ID:
Date Sampled:
Terracon Consultants, Inc.
MW-5r
UK05013-001
11/04/2019 1218
11/05/2019
Aqueous
Project Name: Wilsonville General Store
Project Number: 70149669A
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 SM 6200B-SM 6200B-2011 1 11/06/2019 1229 TML 34759
AnalyticalCAS
Parameter Number Method Result Q LOQ Units Run DL
1,1,1,2-Tetrachloroethane 630-20-6 SM 6200B-ND 1ug/L0.400.50
1,1,2,2-Tetrachloroethane 79-34-5 SM 6200B-ND 1ug/L0.400.50
Tetrachloroethene 127-18-4 SM 6200B-ND 1ug/L0.400.50
Toluene 108-88-3 SM 6200B-ND 1ug/L0.400.50
1,1,2-Trichloro-1,2,2-Trifluoroethane 76-13-1 SM 6200B-ND 1ug/L0.400.50
1,2,3-Trichlorobenzene 87-61-6 SM 6200B-ND 1ug/L0.400.50
1,2,4-Trichlorobenzene 120-82-1 SM 6200B-ND 1ug/L0.400.50
1,1,1-Trichloroethane 71-55-6 SM 6200B-ND 1ug/L0.400.50
1,1,2-Trichloroethane 79-00-5 SM 6200B-ND 1ug/L0.400.50
Trichloroethene 79-01-6 SM 6200B-ND 1ug/L0.400.50
Trichlorofluoromethane 75-69-4 SM 6200B-ND 1ug/L0.400.50
1,2,3-Trichloropropane 96-18-4 SM 6200B-ND 1ug/L0.400.50
1,3,5-Trimethylbenzene (Mesitylene)108-67-8 SM 6200B-ND 1ug/L0.400.50
1,2,4-Trimethylbenzene 95-63-6 SM 6200B-ND 1ug/L0.400.50
Vinyl chloride 75-01-4 SM 6200B-ND 1ug/L0.400.50
m+p - Xylenes 179601-23-1 SM 6200B-ND 1ug/L0.400.50
o - Xylenes 95-47-6 SM 6200B-ND 1ug/L0.400.50
AcceptanceRun 1
Surrogate Q % Recovery Limits
1,2-Dichloroethane-d4 91 70-130
Bromofluorobenzene 98 70-130
Toluene-d8 91 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
DL = Detection Limit
W = Reported on wet weight basis
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.shealylab.com
Shealy Environmental Services, Inc.

Page 6 of 24
Volatile Organic Compounds by GC/MS
Description:Matrix:
Date Received:
Client:Laboratory ID:
Date Sampled:
Terracon Consultants, Inc.
MW-6r
UK05013-002
11/04/2019 1110
11/05/2019
Aqueous
Project Name: Wilsonville General Store
Project Number: 70149669A
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 SM 6200B-SM 6200B-2011 1 11/06/2019 1252 TML 34759
AnalyticalCAS
Parameter Number Method Result Q LOQ Units Run DL
Benzene 71-43-2 SM 6200B-ND 1ug/L0.400.50
Bromobenzene 108-86-1 SM 6200B-ND 1ug/L0.400.50
Bromochloromethane 74-97-5 SM 6200B-ND 1ug/L0.400.50
Bromodichloromethane 75-27-4 SM 6200B-ND 1ug/L0.400.50
Bromoform 75-25-2 SM 6200B-ND 1ug/L0.400.50
Bromomethane (Methyl bromide)74-83-9 SM 6200B-ND 1ug/L0.400.50
n-Butylbenzene 104-51-8 SM 6200B-ND 1ug/L0.400.50
sec-Butylbenzene 135-98-8 SM 6200B-ND 1ug/L0.400.50
tert-Butylbenzene 98-06-6 SM 6200B-ND 1ug/L0.400.50
Carbon tetrachloride 56-23-5 SM 6200B-ND 1ug/L0.400.50
Chlorobenzene 108-90-7 SM 6200B-ND 1ug/L0.400.50
Chloroethane 75-00-3 SM 6200B-ND 1ug/L0.400.50
Chloroform 67-66-3 SM 6200B-ND 1ug/L0.400.50
Chloromethane (Methyl chloride)74-87-3 SM 6200B-ND 1ug/L0.400.50
2-Chlorotoluene 95-49-8 SM 6200B-ND 1ug/L0.400.50
4-Chlorotoluene 106-43-4 SM 6200B-ND 1ug/L0.400.50
Dibromochloromethane 124-48-1 SM 6200B-ND 1ug/L0.400.50
1,2-Dibromoethane (EDB)106-93-4 SM 6200B-ND 1ug/L0.400.50
Dibromomethane (Methylene bromide)74-95-3 SM 6200B-ND 1ug/L0.400.50
1,2-Dichlorobenzene 95-50-1 SM 6200B-ND 1ug/L0.400.50
1,3-Dichlorobenzene 541-73-1 SM 6200B-ND 1ug/L0.400.50
1,4-Dichlorobenzene 106-46-7 SM 6200B-ND 1ug/L0.400.50
Dichlorodifluoromethane 75-71-8 SM 6200B-ND 1ug/L0.400.50
1,1-Dichloroethane 75-34-3 SM 6200B-ND 1ug/L0.400.50
1,2-Dichloroethane 107-06-2 SM 6200B-ND 1ug/L0.400.50
1,1-Dichloroethene 75-35-4 SM 6200B-ND 1ug/L0.400.50
cis-1,2-Dichloroethene 156-59-2 SM 6200B-ND 1ug/L0.400.50
trans-1,2-Dichloroethene 156-60-5 SM 6200B-ND 1ug/L0.400.50
1,2-Dichloropropane 78-87-5 SM 6200B-ND 1ug/L0.400.50
1,3-Dichloropropane 142-28-9 SM 6200B-ND 1ug/L0.400.50
2,2-Dichloropropane 594-20-7 SM 6200B-ND 1ug/L0.400.50
1,1-Dichloropropene 563-58-6 SM 6200B-ND 1ug/L0.400.50
cis-1,3-Dichloropropene 10061-01-5 SM 6200B-ND 1ug/L0.400.50
trans-1,3-Dichloropropene 10061-02-6 SM 6200B-ND 1ug/L0.400.50
Diisopropyl ether (IPE)108-20-3 SM 6200B-58 1ug/L0.400.50
Ethylbenzene 100-41-4 SM 6200B-ND 1ug/L0.400.50
Hexachlorobutadiene 87-68-3 SM 6200B-ND 1ug/L0.400.50
Isopropylbenzene (Cumene)98-82-8 SM 6200B-ND 1ug/L0.400.50
p-Isopropyltoluene (p-Cymene)99-87-6 SM 6200B-ND 1ug/L0.400.50
Methyl tertiary butyl ether (MTBE)1634-04-4 SM 6200B-9.2 1ug/L0.400.50
Methylene chloride 75-09-2 SM 6200B-ND 1ug/L0.400.50
Naphthalene 91-20-3 SM 6200B-ND 1ug/L0.400.50
n-Propylbenzene 103-65-1 SM 6200B-ND 1ug/L0.400.50
Styrene 100-42-5 SM 6200B-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
DL = Detection Limit
W = Reported on wet weight basis
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.shealylab.com
Shealy Environmental Services, Inc.

Page 7 of 24
Volatile Organic Compounds by GC/MS
Description:Matrix:
Date Received:
Client:Laboratory ID:
Date Sampled:
Terracon Consultants, Inc.
MW-6r
UK05013-002
11/04/2019 1110
11/05/2019
Aqueous
Project Name: Wilsonville General Store
Project Number: 70149669A
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 SM 6200B-SM 6200B-2011 1 11/06/2019 1252 TML 34759
AnalyticalCAS
Parameter Number Method Result Q LOQ Units Run DL
1,1,1,2-Tetrachloroethane 630-20-6 SM 6200B-ND 1ug/L0.400.50
1,1,2,2-Tetrachloroethane 79-34-5 SM 6200B-ND 1ug/L0.400.50
Tetrachloroethene 127-18-4 SM 6200B-ND 1ug/L0.400.50
Toluene 108-88-3 SM 6200B-ND 1ug/L0.400.50
1,1,2-Trichloro-1,2,2-Trifluoroethane 76-13-1 SM 6200B-ND 1ug/L0.400.50
1,2,3-Trichlorobenzene 87-61-6 SM 6200B-ND 1ug/L0.400.50
1,2,4-Trichlorobenzene 120-82-1 SM 6200B-ND 1ug/L0.400.50
1,1,1-Trichloroethane 71-55-6 SM 6200B-ND 1ug/L0.400.50
1,1,2-Trichloroethane 79-00-5 SM 6200B-ND 1ug/L0.400.50
Trichloroethene 79-01-6 SM 6200B-ND 1ug/L0.400.50
Trichlorofluoromethane 75-69-4 SM 6200B-ND 1ug/L0.400.50
1,2,3-Trichloropropane 96-18-4 SM 6200B-ND 1ug/L0.400.50
1,3,5-Trimethylbenzene (Mesitylene)108-67-8 SM 6200B-ND 1ug/L0.400.50
1,2,4-Trimethylbenzene 95-63-6 SM 6200B-ND 1ug/L0.400.50
Vinyl chloride 75-01-4 SM 6200B-ND 1ug/L0.400.50
m+p - Xylenes 179601-23-1 SM 6200B-ND 1ug/L0.400.50
o - Xylenes 95-47-6 SM 6200B-ND 1ug/L0.400.50
AcceptanceRun 1
Surrogate Q % Recovery Limits
1,2-Dichloroethane-d4 93 70-130
Bromofluorobenzene 100 70-130
Toluene-d8 93 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
DL = Detection Limit
W = Reported on wet weight basis
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.shealylab.com
Shealy Environmental Services, Inc.

Page 8 of 24
Volatile Organic Compounds by GC/MS
Description:Matrix:
Date Received:
Client:Laboratory ID:
Date Sampled:
Terracon Consultants, Inc.
MW-8r
UK05013-003
11/04/2019 1230
11/05/2019
Aqueous
Project Name: Wilsonville General Store
Project Number: 70149669A
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 SM 6200B-SM 6200B-2011 1 11/06/2019 1315 TML 34759
AnalyticalCAS
Parameter Number Method Result Q LOQ Units Run DL
Benzene 71-43-2 SM 6200B-ND 1ug/L0.400.50
Bromobenzene 108-86-1 SM 6200B-ND 1ug/L0.400.50
Bromochloromethane 74-97-5 SM 6200B-ND 1ug/L0.400.50
Bromodichloromethane 75-27-4 SM 6200B-ND 1ug/L0.400.50
Bromoform 75-25-2 SM 6200B-ND 1ug/L0.400.50
Bromomethane (Methyl bromide)74-83-9 SM 6200B-ND 1ug/L0.400.50
n-Butylbenzene 104-51-8 SM 6200B-ND 1ug/L0.400.50
sec-Butylbenzene 135-98-8 SM 6200B-ND 1ug/L0.400.50
tert-Butylbenzene 98-06-6 SM 6200B-ND 1ug/L0.400.50
Carbon tetrachloride 56-23-5 SM 6200B-ND 1ug/L0.400.50
Chlorobenzene 108-90-7 SM 6200B-ND 1ug/L0.400.50
Chloroethane 75-00-3 SM 6200B-ND 1ug/L0.400.50
Chloroform 67-66-3 SM 6200B-ND 1ug/L0.400.50
Chloromethane (Methyl chloride)74-87-3 SM 6200B-ND 1ug/L0.400.50
2-Chlorotoluene 95-49-8 SM 6200B-ND 1ug/L0.400.50
4-Chlorotoluene 106-43-4 SM 6200B-ND 1ug/L0.400.50
Dibromochloromethane 124-48-1 SM 6200B-ND 1ug/L0.400.50
1,2-Dibromoethane (EDB)106-93-4 SM 6200B-ND 1ug/L0.400.50
Dibromomethane (Methylene bromide)74-95-3 SM 6200B-ND 1ug/L0.400.50
1,2-Dichlorobenzene 95-50-1 SM 6200B-ND 1ug/L0.400.50
1,3-Dichlorobenzene 541-73-1 SM 6200B-ND 1ug/L0.400.50
1,4-Dichlorobenzene 106-46-7 SM 6200B-ND 1ug/L0.400.50
Dichlorodifluoromethane 75-71-8 SM 6200B-ND 1ug/L0.400.50
1,1-Dichloroethane 75-34-3 SM 6200B-ND 1ug/L0.400.50
1,2-Dichloroethane 107-06-2 SM 6200B-ND 1ug/L0.400.50
1,1-Dichloroethene 75-35-4 SM 6200B-ND 1ug/L0.400.50
cis-1,2-Dichloroethene 156-59-2 SM 6200B-ND 1ug/L0.400.50
trans-1,2-Dichloroethene 156-60-5 SM 6200B-ND 1ug/L0.400.50
1,2-Dichloropropane 78-87-5 SM 6200B-ND 1ug/L0.400.50
1,3-Dichloropropane 142-28-9 SM 6200B-ND 1ug/L0.400.50
2,2-Dichloropropane 594-20-7 SM 6200B-ND 1ug/L0.400.50
1,1-Dichloropropene 563-58-6 SM 6200B-ND 1ug/L0.400.50
cis-1,3-Dichloropropene 10061-01-5 SM 6200B-ND 1ug/L0.400.50
trans-1,3-Dichloropropene 10061-02-6 SM 6200B-ND 1ug/L0.400.50
Diisopropyl ether (IPE)108-20-3 SM 6200B-ND 1ug/L0.400.50
Ethylbenzene 100-41-4 SM 6200B-0.95 1ug/L0.400.50
Hexachlorobutadiene 87-68-3 SM 6200B-ND 1ug/L0.400.50
Isopropylbenzene (Cumene)98-82-8 SM 6200B-ND 1ug/L0.400.50
p-Isopropyltoluene (p-Cymene)99-87-6 SM 6200B-0.51 1ug/L0.400.50
Methyl tertiary butyl ether (MTBE)1634-04-4 SM 6200B-4.2 1ug/L0.400.50
Methylene chloride 75-09-2 SM 6200B-ND 1ug/L0.400.50
Naphthalene 91-20-3 SM 6200B-1.6 1ug/L0.400.50
n-Propylbenzene 103-65-1 SM 6200B-0.40 J 1ug/L0.400.50
Styrene 100-42-5 SM 6200B-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
DL = Detection Limit
W = Reported on wet weight basis
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.shealylab.com
Shealy Environmental Services, Inc.

Page 9 of 24
Volatile Organic Compounds by GC/MS
Description:Matrix:
Date Received:
Client:Laboratory ID:
Date Sampled:
Terracon Consultants, Inc.
MW-8r
UK05013-003
11/04/2019 1230
11/05/2019
Aqueous
Project Name: Wilsonville General Store
Project Number: 70149669A
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 SM 6200B-SM 6200B-2011 1 11/06/2019 1315 TML 34759
AnalyticalCAS
Parameter Number Method Result Q LOQ Units Run DL
1,1,1,2-Tetrachloroethane 630-20-6 SM 6200B-ND 1ug/L0.400.50
1,1,2,2-Tetrachloroethane 79-34-5 SM 6200B-ND 1ug/L0.400.50
Tetrachloroethene 127-18-4 SM 6200B-ND 1ug/L0.400.50
Toluene 108-88-3 SM 6200B-ND 1ug/L0.400.50
1,1,2-Trichloro-1,2,2-Trifluoroethane 76-13-1 SM 6200B-ND 1ug/L0.400.50
1,2,3-Trichlorobenzene 87-61-6 SM 6200B-ND 1ug/L0.400.50
1,2,4-Trichlorobenzene 120-82-1 SM 6200B-ND 1ug/L0.400.50
1,1,1-Trichloroethane 71-55-6 SM 6200B-ND 1ug/L0.400.50
1,1,2-Trichloroethane 79-00-5 SM 6200B-ND 1ug/L0.400.50
Trichloroethene 79-01-6 SM 6200B-ND 1ug/L0.400.50
Trichlorofluoromethane 75-69-4 SM 6200B-ND 1ug/L0.400.50
1,2,3-Trichloropropane 96-18-4 SM 6200B-ND 1ug/L0.400.50
1,3,5-Trimethylbenzene (Mesitylene)108-67-8 SM 6200B-0.55 1ug/L0.400.50
1,2,4-Trimethylbenzene 95-63-6 SM 6200B-2.1 1ug/L0.400.50
Vinyl chloride 75-01-4 SM 6200B-ND 1ug/L0.400.50
m+p - Xylenes 179601-23-1 SM 6200B-0.62 1ug/L0.400.50
o - Xylenes 95-47-6 SM 6200B-1.1 1ug/L0.400.50
AcceptanceRun 1
Surrogate Q % Recovery Limits
1,2-Dichloroethane-d4 90 70-130
Bromofluorobenzene 93 70-130
Toluene-d8 91 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
DL = Detection Limit
W = Reported on wet weight basis
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.shealylab.com
Shealy Environmental Services, Inc.

Page 10 of 24
Volatile Organic Compounds by GC/MS
Description:Matrix:
Date Received:
Client:Laboratory ID:
Date Sampled:
Terracon Consultants, Inc.
MW-15
UK05013-004
11/04/2019 1108
11/05/2019
Aqueous
Project Name: Wilsonville General Store
Project Number: 70149669A
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 SM 6200B-SM 6200B-2011 1 11/06/2019 1338 TML 34759
AnalyticalCAS
Parameter Number Method Result Q LOQ Units Run DL
Benzene 71-43-2 SM 6200B-12 1ug/L0.400.50
Bromobenzene 108-86-1 SM 6200B-ND 1ug/L0.400.50
Bromochloromethane 74-97-5 SM 6200B-ND 1ug/L0.400.50
Bromodichloromethane 75-27-4 SM 6200B-ND 1ug/L0.400.50
Bromoform 75-25-2 SM 6200B-ND 1ug/L0.400.50
Bromomethane (Methyl bromide)74-83-9 SM 6200B-ND 1ug/L0.400.50
n-Butylbenzene 104-51-8 SM 6200B-ND 1ug/L0.400.50
sec-Butylbenzene 135-98-8 SM 6200B-ND 1ug/L0.400.50
tert-Butylbenzene 98-06-6 SM 6200B-ND 1ug/L0.400.50
Carbon tetrachloride 56-23-5 SM 6200B-ND 1ug/L0.400.50
Chlorobenzene 108-90-7 SM 6200B-ND 1ug/L0.400.50
Chloroethane 75-00-3 SM 6200B-ND 1ug/L0.400.50
Chloroform 67-66-3 SM 6200B-ND 1ug/L0.400.50
Chloromethane (Methyl chloride)74-87-3 SM 6200B-ND 1ug/L0.400.50
2-Chlorotoluene 95-49-8 SM 6200B-ND 1ug/L0.400.50
4-Chlorotoluene 106-43-4 SM 6200B-ND 1ug/L0.400.50
Dibromochloromethane 124-48-1 SM 6200B-ND 1ug/L0.400.50
1,2-Dibromoethane (EDB)106-93-4 SM 6200B-ND 1ug/L0.400.50
Dibromomethane (Methylene bromide)74-95-3 SM 6200B-ND 1ug/L0.400.50
1,2-Dichlorobenzene 95-50-1 SM 6200B-ND 1ug/L0.400.50
1,3-Dichlorobenzene 541-73-1 SM 6200B-ND 1ug/L0.400.50
1,4-Dichlorobenzene 106-46-7 SM 6200B-ND 1ug/L0.400.50
Dichlorodifluoromethane 75-71-8 SM 6200B-ND 1ug/L0.400.50
1,1-Dichloroethane 75-34-3 SM 6200B-ND 1ug/L0.400.50
1,2-Dichloroethane 107-06-2 SM 6200B-ND 1ug/L0.400.50
1,1-Dichloroethene 75-35-4 SM 6200B-ND 1ug/L0.400.50
cis-1,2-Dichloroethene 156-59-2 SM 6200B-ND 1ug/L0.400.50
trans-1,2-Dichloroethene 156-60-5 SM 6200B-ND 1ug/L0.400.50
1,2-Dichloropropane 78-87-5 SM 6200B-ND 1ug/L0.400.50
1,3-Dichloropropane 142-28-9 SM 6200B-ND 1ug/L0.400.50
2,2-Dichloropropane 594-20-7 SM 6200B-ND 1ug/L0.400.50
1,1-Dichloropropene 563-58-6 SM 6200B-ND 1ug/L0.400.50
cis-1,3-Dichloropropene 10061-01-5 SM 6200B-ND 1ug/L0.400.50
trans-1,3-Dichloropropene 10061-02-6 SM 6200B-ND 1ug/L0.400.50
Diisopropyl ether (IPE)108-20-3 SM 6200B-7.4 1ug/L0.400.50
Ethylbenzene 100-41-4 SM 6200B-ND 1ug/L0.400.50
Hexachlorobutadiene 87-68-3 SM 6200B-ND 1ug/L0.400.50
Isopropylbenzene (Cumene)98-82-8 SM 6200B-ND 1ug/L0.400.50
p-Isopropyltoluene (p-Cymene)99-87-6 SM 6200B-ND 1ug/L0.400.50
Methyl tertiary butyl ether (MTBE)1634-04-4 SM 6200B-ND 1ug/L0.400.50
Methylene chloride 75-09-2 SM 6200B-ND 1ug/L0.400.50
Naphthalene 91-20-3 SM 6200B-1.2 1ug/L0.400.50
n-Propylbenzene 103-65-1 SM 6200B-ND 1ug/L0.400.50
Styrene 100-42-5 SM 6200B-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
DL = Detection Limit
W = Reported on wet weight basis
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.shealylab.com
Shealy Environmental Services, Inc.

Page 11 of 24
Volatile Organic Compounds by GC/MS
Description:Matrix:
Date Received:
Client:Laboratory ID:
Date Sampled:
Terracon Consultants, Inc.
MW-15
UK05013-004
11/04/2019 1108
11/05/2019
Aqueous
Project Name: Wilsonville General Store
Project Number: 70149669A
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 SM 6200B-SM 6200B-2011 1 11/06/2019 1338 TML 34759
AnalyticalCAS
Parameter Number Method Result Q LOQ Units Run DL
1,1,1,2-Tetrachloroethane 630-20-6 SM 6200B-ND 1ug/L0.400.50
1,1,2,2-Tetrachloroethane 79-34-5 SM 6200B-ND 1ug/L0.400.50
Tetrachloroethene 127-18-4 SM 6200B-ND 1ug/L0.400.50
Toluene 108-88-3 SM 6200B-ND 1ug/L0.400.50
1,1,2-Trichloro-1,2,2-Trifluoroethane 76-13-1 SM 6200B-ND 1ug/L0.400.50
1,2,3-Trichlorobenzene 87-61-6 SM 6200B-ND 1ug/L0.400.50
1,2,4-Trichlorobenzene 120-82-1 SM 6200B-ND 1ug/L0.400.50
1,1,1-Trichloroethane 71-55-6 SM 6200B-ND 1ug/L0.400.50
1,1,2-Trichloroethane 79-00-5 SM 6200B-ND 1ug/L0.400.50
Trichloroethene 79-01-6 SM 6200B-ND 1ug/L0.400.50
Trichlorofluoromethane 75-69-4 SM 6200B-ND 1ug/L0.400.50
1,2,3-Trichloropropane 96-18-4 SM 6200B-ND 1ug/L0.400.50
1,3,5-Trimethylbenzene (Mesitylene)108-67-8 SM 6200B-ND 1ug/L0.400.50
1,2,4-Trimethylbenzene 95-63-6 SM 6200B-ND 1ug/L0.400.50
Vinyl chloride 75-01-4 SM 6200B-ND 1ug/L0.400.50
m+p - Xylenes 179601-23-1 SM 6200B-0.44 J 1ug/L0.400.50
o - Xylenes 95-47-6 SM 6200B-0.48 J 1ug/L0.400.50
AcceptanceRun 1
Surrogate Q % Recovery Limits
1,2-Dichloroethane-d4 92 70-130
Bromofluorobenzene 98 70-130
Toluene-d8 91 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
DL = Detection Limit
W = Reported on wet weight basis
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.shealylab.com
Shealy Environmental Services, Inc.

Page 12 of 24
Volatile Organic Compounds by GC/MS
Description:Matrix:
Date Received:
Client:Laboratory ID:
Date Sampled:
Terracon Consultants, Inc.
MW-16
UK05013-005
11/04/2019 1216
11/05/2019
Aqueous
Project Name: Wilsonville General Store
Project Number: 70149669A
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 SM 6200B-SM 6200B-2011 1 11/06/2019 1401 TML 34759
AnalyticalCAS
Parameter Number Method Result Q LOQ Units Run DL
Benzene 71-43-2 SM 6200B-ND 1ug/L0.400.50
Bromobenzene 108-86-1 SM 6200B-ND 1ug/L0.400.50
Bromochloromethane 74-97-5 SM 6200B-ND 1ug/L0.400.50
Bromodichloromethane 75-27-4 SM 6200B-ND 1ug/L0.400.50
Bromoform 75-25-2 SM 6200B-ND 1ug/L0.400.50
Bromomethane (Methyl bromide)74-83-9 SM 6200B-ND 1ug/L0.400.50
n-Butylbenzene 104-51-8 SM 6200B-ND 1ug/L0.400.50
sec-Butylbenzene 135-98-8 SM 6200B-ND 1ug/L0.400.50
tert-Butylbenzene 98-06-6 SM 6200B-ND 1ug/L0.400.50
Carbon tetrachloride 56-23-5 SM 6200B-ND 1ug/L0.400.50
Chlorobenzene 108-90-7 SM 6200B-ND 1ug/L0.400.50
Chloroethane 75-00-3 SM 6200B-ND 1ug/L0.400.50
Chloroform 67-66-3 SM 6200B-ND 1ug/L0.400.50
Chloromethane (Methyl chloride)74-87-3 SM 6200B-ND 1ug/L0.400.50
2-Chlorotoluene 95-49-8 SM 6200B-ND 1ug/L0.400.50
4-Chlorotoluene 106-43-4 SM 6200B-ND 1ug/L0.400.50
Dibromochloromethane 124-48-1 SM 6200B-ND 1ug/L0.400.50
1,2-Dibromoethane (EDB)106-93-4 SM 6200B-ND 1ug/L0.400.50
Dibromomethane (Methylene bromide)74-95-3 SM 6200B-ND 1ug/L0.400.50
1,2-Dichlorobenzene 95-50-1 SM 6200B-ND 1ug/L0.400.50
1,3-Dichlorobenzene 541-73-1 SM 6200B-ND 1ug/L0.400.50
1,4-Dichlorobenzene 106-46-7 SM 6200B-ND 1ug/L0.400.50
Dichlorodifluoromethane 75-71-8 SM 6200B-ND 1ug/L0.400.50
1,1-Dichloroethane 75-34-3 SM 6200B-ND 1ug/L0.400.50
1,2-Dichloroethane 107-06-2 SM 6200B-ND 1ug/L0.400.50
1,1-Dichloroethene 75-35-4 SM 6200B-ND 1ug/L0.400.50
cis-1,2-Dichloroethene 156-59-2 SM 6200B-ND 1ug/L0.400.50
trans-1,2-Dichloroethene 156-60-5 SM 6200B-ND 1ug/L0.400.50
1,2-Dichloropropane 78-87-5 SM 6200B-ND 1ug/L0.400.50
1,3-Dichloropropane 142-28-9 SM 6200B-ND 1ug/L0.400.50
2,2-Dichloropropane 594-20-7 SM 6200B-ND 1ug/L0.400.50
1,1-Dichloropropene 563-58-6 SM 6200B-ND 1ug/L0.400.50
cis-1,3-Dichloropropene 10061-01-5 SM 6200B-ND 1ug/L0.400.50
trans-1,3-Dichloropropene 10061-02-6 SM 6200B-ND 1ug/L0.400.50
Diisopropyl ether (IPE)108-20-3 SM 6200B-ND 1ug/L0.400.50
Ethylbenzene 100-41-4 SM 6200B-ND 1ug/L0.400.50
Hexachlorobutadiene 87-68-3 SM 6200B-ND 1ug/L0.400.50
Isopropylbenzene (Cumene)98-82-8 SM 6200B-ND 1ug/L0.400.50
p-Isopropyltoluene (p-Cymene)99-87-6 SM 6200B-ND 1ug/L0.400.50
Methyl tertiary butyl ether (MTBE)1634-04-4 SM 6200B-ND 1ug/L0.400.50
Methylene chloride 75-09-2 SM 6200B-ND 1ug/L0.400.50
Naphthalene 91-20-3 SM 6200B-ND 1ug/L0.400.50
n-Propylbenzene 103-65-1 SM 6200B-ND 1ug/L0.400.50
Styrene 100-42-5 SM 6200B-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
DL = Detection Limit
W = Reported on wet weight basis
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.shealylab.com
Shealy Environmental Services, Inc.

Page 13 of 24
Volatile Organic Compounds by GC/MS
Description:Matrix:
Date Received:
Client:Laboratory ID:
Date Sampled:
Terracon Consultants, Inc.
MW-16
UK05013-005
11/04/2019 1216
11/05/2019
Aqueous
Project Name: Wilsonville General Store
Project Number: 70149669A
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 SM 6200B-SM 6200B-2011 1 11/06/2019 1401 TML 34759
AnalyticalCAS
Parameter Number Method Result Q LOQ Units Run DL
1,1,1,2-Tetrachloroethane 630-20-6 SM 6200B-ND 1ug/L0.400.50
1,1,2,2-Tetrachloroethane 79-34-5 SM 6200B-ND 1ug/L0.400.50
Tetrachloroethene 127-18-4 SM 6200B-ND 1ug/L0.400.50
Toluene 108-88-3 SM 6200B-ND 1ug/L0.400.50
1,1,2-Trichloro-1,2,2-Trifluoroethane 76-13-1 SM 6200B-ND 1ug/L0.400.50
1,2,3-Trichlorobenzene 87-61-6 SM 6200B-ND 1ug/L0.400.50
1,2,4-Trichlorobenzene 120-82-1 SM 6200B-ND 1ug/L0.400.50
1,1,1-Trichloroethane 71-55-6 SM 6200B-ND 1ug/L0.400.50
1,1,2-Trichloroethane 79-00-5 SM 6200B-ND 1ug/L0.400.50
Trichloroethene 79-01-6 SM 6200B-ND 1ug/L0.400.50
Trichlorofluoromethane 75-69-4 SM 6200B-ND 1ug/L0.400.50
1,2,3-Trichloropropane 96-18-4 SM 6200B-ND 1ug/L0.400.50
1,3,5-Trimethylbenzene (Mesitylene)108-67-8 SM 6200B-ND 1ug/L0.400.50
1,2,4-Trimethylbenzene 95-63-6 SM 6200B-ND 1ug/L0.400.50
Vinyl chloride 75-01-4 SM 6200B-ND 1ug/L0.400.50
m+p - Xylenes 179601-23-1 SM 6200B-ND 1ug/L0.400.50
o - Xylenes 95-47-6 SM 6200B-ND 1ug/L0.400.50
AcceptanceRun 1
Surrogate Q % Recovery Limits
1,2-Dichloroethane-d4 90 70-130
Bromofluorobenzene 92 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
DL = Detection Limit
W = Reported on wet weight basis
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.shealylab.com
Shealy Environmental Services, Inc.

Page 14 of 24
Volatile Organic Compounds by GC/MS
Description:Matrix:
Date Received:
Client:Laboratory ID:
Date Sampled:
Terracon Consultants, Inc.
WSW-1
UK05013-007
11/04/2019 1310
11/05/2019
Aqueous
Project Name: Wilsonville General Store
Project Number: 70149669A
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 SM 6200B-SM 6200B-2011 1 11/06/2019 1425 TML 34759
AnalyticalCAS
Parameter Number Method Result Q LOQ Units Run DL
Benzene 71-43-2 SM 6200B-ND 1ug/L0.400.50
Bromobenzene 108-86-1 SM 6200B-ND 1ug/L0.400.50
Bromochloromethane 74-97-5 SM 6200B-ND 1ug/L0.400.50
Bromodichloromethane 75-27-4 SM 6200B-ND 1ug/L0.400.50
Bromoform 75-25-2 SM 6200B-ND 1ug/L0.400.50
Bromomethane (Methyl bromide)74-83-9 SM 6200B-ND 1ug/L0.400.50
n-Butylbenzene 104-51-8 SM 6200B-ND 1ug/L0.400.50
sec-Butylbenzene 135-98-8 SM 6200B-ND 1ug/L0.400.50
tert-Butylbenzene 98-06-6 SM 6200B-ND 1ug/L0.400.50
Carbon tetrachloride 56-23-5 SM 6200B-ND 1ug/L0.400.50
Chlorobenzene 108-90-7 SM 6200B-ND 1ug/L0.400.50
Chloroethane 75-00-3 SM 6200B-ND 1ug/L0.400.50
Chloroform 67-66-3 SM 6200B-ND 1ug/L0.400.50
Chloromethane (Methyl chloride)74-87-3 SM 6200B-ND 1ug/L0.400.50
2-Chlorotoluene 95-49-8 SM 6200B-ND 1ug/L0.400.50
4-Chlorotoluene 106-43-4 SM 6200B-ND 1ug/L0.400.50
Dibromochloromethane 124-48-1 SM 6200B-ND 1ug/L0.400.50
1,2-Dibromoethane (EDB)106-93-4 SM 6200B-ND 1ug/L0.400.50
Dibromomethane (Methylene bromide)74-95-3 SM 6200B-ND 1ug/L0.400.50
1,2-Dichlorobenzene 95-50-1 SM 6200B-ND 1ug/L0.400.50
1,3-Dichlorobenzene 541-73-1 SM 6200B-ND 1ug/L0.400.50
1,4-Dichlorobenzene 106-46-7 SM 6200B-ND 1ug/L0.400.50
Dichlorodifluoromethane 75-71-8 SM 6200B-ND 1ug/L0.400.50
1,1-Dichloroethane 75-34-3 SM 6200B-ND 1ug/L0.400.50
1,2-Dichloroethane 107-06-2 SM 6200B-ND 1ug/L0.400.50
1,1-Dichloroethene 75-35-4 SM 6200B-ND 1ug/L0.400.50
cis-1,2-Dichloroethene 156-59-2 SM 6200B-ND 1ug/L0.400.50
trans-1,2-Dichloroethene 156-60-5 SM 6200B-ND 1ug/L0.400.50
1,2-Dichloropropane 78-87-5 SM 6200B-ND 1ug/L0.400.50
1,3-Dichloropropane 142-28-9 SM 6200B-ND 1ug/L0.400.50
2,2-Dichloropropane 594-20-7 SM 6200B-ND 1ug/L0.400.50
1,1-Dichloropropene 563-58-6 SM 6200B-ND 1ug/L0.400.50
cis-1,3-Dichloropropene 10061-01-5 SM 6200B-ND 1ug/L0.400.50
trans-1,3-Dichloropropene 10061-02-6 SM 6200B-ND 1ug/L0.400.50
Diisopropyl ether (IPE)108-20-3 SM 6200B-5.2 1ug/L0.400.50
Ethylbenzene 100-41-4 SM 6200B-ND 1ug/L0.400.50
Hexachlorobutadiene 87-68-3 SM 6200B-ND 1ug/L0.400.50
Isopropylbenzene (Cumene)98-82-8 SM 6200B-ND 1ug/L0.400.50
p-Isopropyltoluene (p-Cymene)99-87-6 SM 6200B-ND 1ug/L0.400.50
Methyl tertiary butyl ether (MTBE)1634-04-4 SM 6200B-7.4 1ug/L0.400.50
Methylene chloride 75-09-2 SM 6200B-ND 1ug/L0.400.50
Naphthalene 91-20-3 SM 6200B-ND 1ug/L0.400.50
n-Propylbenzene 103-65-1 SM 6200B-ND 1ug/L0.400.50
Styrene 100-42-5 SM 6200B-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
DL = Detection Limit
W = Reported on wet weight basis
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.shealylab.com
Shealy Environmental Services, Inc.

Page 15 of 24
Volatile Organic Compounds by GC/MS
Description:Matrix:
Date Received:
Client:Laboratory ID:
Date Sampled:
Terracon Consultants, Inc.
WSW-1
UK05013-007
11/04/2019 1310
11/05/2019
Aqueous
Project Name: Wilsonville General Store
Project Number: 70149669A
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 SM 6200B-SM 6200B-2011 1 11/06/2019 1425 TML 34759
AnalyticalCAS
Parameter Number Method Result Q LOQ Units Run DL
1,1,1,2-Tetrachloroethane 630-20-6 SM 6200B-ND 1ug/L0.400.50
1,1,2,2-Tetrachloroethane 79-34-5 SM 6200B-ND 1ug/L0.400.50
Tetrachloroethene 127-18-4 SM 6200B-ND 1ug/L0.400.50
Toluene 108-88-3 SM 6200B-ND 1ug/L0.400.50
1,1,2-Trichloro-1,2,2-Trifluoroethane 76-13-1 SM 6200B-ND 1ug/L0.400.50
1,2,3-Trichlorobenzene 87-61-6 SM 6200B-ND 1ug/L0.400.50
1,2,4-Trichlorobenzene 120-82-1 SM 6200B-ND 1ug/L0.400.50
1,1,1-Trichloroethane 71-55-6 SM 6200B-ND 1ug/L0.400.50
1,1,2-Trichloroethane 79-00-5 SM 6200B-ND 1ug/L0.400.50
Trichloroethene 79-01-6 SM 6200B-ND 1ug/L0.400.50
Trichlorofluoromethane 75-69-4 SM 6200B-ND 1ug/L0.400.50
1,2,3-Trichloropropane 96-18-4 SM 6200B-ND 1ug/L0.400.50
1,3,5-Trimethylbenzene (Mesitylene)108-67-8 SM 6200B-ND 1ug/L0.400.50
1,2,4-Trimethylbenzene 95-63-6 SM 6200B-ND 1ug/L0.400.50
Vinyl chloride 75-01-4 SM 6200B-ND 1ug/L0.400.50
m+p - Xylenes 179601-23-1 SM 6200B-ND 1ug/L0.400.50
o - Xylenes 95-47-6 SM 6200B-ND 1ug/L0.400.50
AcceptanceRun 1
Surrogate Q % Recovery Limits
1,2-Dichloroethane-d4 93 70-130
Bromofluorobenzene 99 70-130
Toluene-d8 93 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
DL = Detection Limit
W = Reported on wet weight basis
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.shealylab.com
Shealy Environmental Services, Inc.

Page 16 of 24
QC Summary
QC Data for Lot Number: UK05013
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Shealy Environmental Services, Inc.

Page 17 of 24
Volatile Organic Compounds by GC/MS - MB
Batch:Prep Method:
Sample ID:UQ34759-001
34759 SM 6200B-2011
Analytical Method:SM 6200B-2011
Matrix:Aqueous
Parameter Result Q LOQ DL Units Analysis DateDil
Benzene ND 11/06/2019 10400.50 0.40 ug/L1
Bromobenzene ND 11/06/2019 10400.50 0.40 ug/L1
Bromochloromethane ND 11/06/2019 10400.50 0.40 ug/L1
Bromodichloromethane ND 11/06/2019 10400.50 0.40 ug/L1
Bromoform ND 11/06/2019 10400.50 0.40 ug/L1
Bromomethane (Methyl bromide)ND 11/06/2019 10400.50 0.40 ug/L1
n-Butylbenzene ND 11/06/2019 10400.50 0.40 ug/L1
sec-Butylbenzene ND 11/06/2019 10400.50 0.40 ug/L1
tert-Butylbenzene ND 11/06/2019 10400.50 0.40 ug/L1
Carbon tetrachloride ND 11/06/2019 10400.50 0.40 ug/L1
Chlorobenzene ND 11/06/2019 10400.50 0.40 ug/L1
Chloroethane ND 11/06/2019 10400.50 0.40 ug/L1
Chloroform ND 11/06/2019 10400.50 0.40 ug/L1
Chloromethane (Methyl chloride)ND 11/06/2019 10400.50 0.40 ug/L1
2-Chlorotoluene ND 11/06/2019 10400.50 0.40 ug/L1
4-Chlorotoluene ND 11/06/2019 10400.50 0.40 ug/L1
Dibromochloromethane ND 11/06/2019 10400.50 0.40 ug/L1
1,2-Dibromoethane (EDB)ND 11/06/2019 10400.50 0.40 ug/L1
Dibromomethane (Methylene bromide)ND 11/06/2019 10400.50 0.40 ug/L1
1,2-Dichlorobenzene ND 11/06/2019 10400.50 0.40 ug/L1
1,3-Dichlorobenzene ND 11/06/2019 10400.50 0.40 ug/L1
1,4-Dichlorobenzene ND 11/06/2019 10400.50 0.40 ug/L1
Dichlorodifluoromethane ND 11/06/2019 10400.50 0.40 ug/L1
1,1-Dichloroethane ND 11/06/2019 10400.50 0.40 ug/L1
1,2-Dichloroethane ND 11/06/2019 10400.50 0.40 ug/L1
1,1-Dichloroethene ND 11/06/2019 10400.50 0.40 ug/L1
cis-1,2-Dichloroethene ND 11/06/2019 10400.50 0.40 ug/L1
trans-1,2-Dichloroethene ND 11/06/2019 10400.50 0.40 ug/L1
1,2-Dichloropropane ND 11/06/2019 10400.50 0.40 ug/L1
1,3-Dichloropropane ND 11/06/2019 10400.50 0.40 ug/L1
2,2-Dichloropropane ND 11/06/2019 10400.50 0.40 ug/L1
1,1-Dichloropropene ND 11/06/2019 10400.50 0.40 ug/L1
cis-1,3-Dichloropropene ND 11/06/2019 10400.50 0.40 ug/L1
trans-1,3-Dichloropropene ND 11/06/2019 10400.50 0.40 ug/L1
Diisopropyl ether (IPE)ND 11/06/2019 10400.50 0.40 ug/L1
Ethylbenzene ND 11/06/2019 10400.50 0.40 ug/L1
Hexachlorobutadiene ND 11/06/2019 10400.50 0.40 ug/L1
Isopropylbenzene (Cumene)ND 11/06/2019 10400.50 0.40 ug/L1
p-Isopropyltoluene (p-Cymene)ND 11/06/2019 10400.50 0.40 ug/L1
Methyl tertiary butyl ether (MTBE)ND 11/06/2019 10400.50 0.40 ug/L1
Methylene chloride ND 11/06/2019 10400.50 0.40 ug/L1
Naphthalene ND 11/06/2019 10400.50 0.40 ug/L1
n-Propylbenzene ND 11/06/2019 10400.50 0.40 ug/L1
Styrene ND 11/06/2019 10400.50 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 criteriaP = The RPD between two GC columns exceeds 40%
+ = RPD is out of criteria_DL = Detection Limit
LOD = Limit of Detection
QC Data for Lot Number: UK05013
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.shealylab.com
Shealy Environmental Services, Inc.

Page 18 of 24
Volatile Organic Compounds by GC/MS - MB
Batch:Prep Method:
Sample ID:UQ34759-001
34759 SM 6200B-2011
Analytical Method:SM 6200B-2011
Matrix:Aqueous
Parameter Result Q LOQ DL Units Analysis DateDil
1,1,1,2-Tetrachloroethane ND 11/06/2019 10400.50 0.40 ug/L1
1,1,2,2-Tetrachloroethane ND 11/06/2019 10400.50 0.40 ug/L1
Tetrachloroethene ND 11/06/2019 10400.50 0.40 ug/L1
Toluene ND 11/06/2019 10400.50 0.40 ug/L1
1,1,2-Trichloro-1,2,2-Trifluoroethane ND 11/06/2019 10400.50 0.40 ug/L1
1,2,3-Trichlorobenzene ND 11/06/2019 10400.50 0.40 ug/L1
1,2,4-Trichlorobenzene ND 11/06/2019 10400.50 0.40 ug/L1
1,1,1-Trichloroethane ND 11/06/2019 10400.50 0.40 ug/L1
1,1,2-Trichloroethane ND 11/06/2019 10400.50 0.40 ug/L1
Trichloroethene ND 11/06/2019 10400.50 0.40 ug/L1
Trichlorofluoromethane ND 11/06/2019 10400.50 0.40 ug/L1
1,2,3-Trichloropropane ND 11/06/2019 10400.50 0.40 ug/L1
1,3,5-Trimethylbenzene (Mesitylene)ND 11/06/2019 10400.50 0.40 ug/L1
1,2,4-Trimethylbenzene ND 11/06/2019 10400.50 0.40 ug/L1
Vinyl chloride ND 11/06/2019 10400.50 0.40 ug/L1
m+p - Xylenes ND 11/06/2019 10400.50 0.40 ug/L1
o - Xylenes ND 11/06/2019 10400.50 0.40 ug/L1
Surrogate Q % Rec Acceptance
Limit
1,2-Dichloroethane-d4 90 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 criteriaP = The RPD between two GC columns exceeds 40%
+ = RPD is out of criteria_DL = Detection Limit
LOD = Limit of Detection
QC Data for Lot Number: UK05013
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Shealy Environmental Services, Inc.

Page 19 of 24
Volatile Organic Compounds by GC/MS - LCS
Batch:Prep Method:
Sample ID:UQ34759-002
34759 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 11/06/2019 08241035070-1301
Bromobenzene 55 11/06/2019 08241105070-1301
Bromochloromethane 50 11/06/2019 08241005070-1301
Bromodichloromethane 50 11/06/2019 0824995070-1301
Bromoform 50 11/06/2019 08241005070-1301
Bromomethane (Methyl bromide)51 11/06/2019 08241025060-1401
n-Butylbenzene 53 11/06/2019 08241065070-1301
sec-Butylbenzene 54 11/06/2019 08241095070-1301
tert-Butylbenzene 54 11/06/2019 08241075070-1301
Carbon tetrachloride 46 11/06/2019 0824915070-1301
Chlorobenzene 50 11/06/2019 08241005070-1301
Chloroethane 52 11/06/2019 08241045042-1631
Chloroform 49 11/06/2019 0824995070-1301
Chloromethane (Methyl chloride)54 11/06/2019 08241085020-1581
2-Chlorotoluene 53 11/06/2019 08241065070-1301
4-Chlorotoluene 55 11/06/2019 08241105070-1301
Dibromochloromethane 51 11/06/2019 08241035070-1301
1,2-Dibromoethane (EDB)52 11/06/2019 08241055070-1301
Dibromomethane (Methylene bromide)49 11/06/2019 0824995070-1301
1,2-Dichlorobenzene 51 11/06/2019 08241025070-1301
1,3-Dichlorobenzene 52 11/06/2019 08241055070-1301
1,4-Dichlorobenzene 51 11/06/2019 08241015070-1301
Dichlorodifluoromethane 61 11/06/2019 08241225060-1401
1,1-Dichloroethane 50 11/06/2019 0824995070-1301
1,2-Dichloroethane 48 11/06/2019 0824965070-1301
1,1-Dichloroethene 51 11/06/2019 08241035070-1301
cis-1,2-Dichloroethene 51 11/06/2019 08241015070-1301
trans-1,2-Dichloroethene 51 11/06/2019 08241015070-1301
1,2-Dichloropropane 51 11/06/2019 08241025070-1301
1,3-Dichloropropane 51 11/06/2019 08241015070-1301
2,2-Dichloropropane 50 11/06/2019 0824995070-1301
1,1-Dichloropropene 50 11/06/2019 0824995070-1301
cis-1,3-Dichloropropene 53 11/06/2019 08241055070-1301
trans-1,3-Dichloropropene 54 11/06/2019 08241075070-1301
Diisopropyl ether (IPE)51 11/06/2019 08241025070-1301
Ethylbenzene 53 11/06/2019 08241065070-1301
Hexachlorobutadiene 48 11/06/2019 0824975070-1301
Isopropylbenzene (Cumene)53 11/06/2019 08241055070-1301
p-Isopropyltoluene (p-Cymene)54 11/06/2019 08241085070-1301
Methyl tertiary butyl ether (MTBE)52 11/06/2019 08241035070-1301
Methylene chloride 50 11/06/2019 0824995070-1301
Naphthalene 54 11/06/2019 08241085050-1401
n-Propylbenzene 56 11/06/2019 08241125070-1301
Styrene 55 11/06/2019 08241095070-1301
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 criteriaP = The RPD between two GC columns exceeds 40%
+ = RPD is out of criteria_DL = Detection Limit
LOD = Limit of Detection
QC Data for Lot Number: UK05013
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Shealy Environmental Services, Inc.

Page 20 of 24
Volatile Organic Compounds by GC/MS - LCS
Batch:Prep Method:
Sample ID:UQ34759-002
34759 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 50 11/06/2019 08241015070-1301
1,1,2,2-Tetrachloroethane 51 11/06/2019 08241035070-1301
Tetrachloroethene 52 11/06/2019 08241045070-1301
Toluene 53 11/06/2019 08241065070-1301
1,1,2-Trichloro-1,2,2-Trifluoroethane 49 11/06/2019 0824985070-1301
1,2,3-Trichlorobenzene 53 11/06/2019 08241065070-1301
1,2,4-Trichlorobenzene 54 11/06/2019 08241075070-1301
1,1,1-Trichloroethane 53 11/06/2019 08241075070-1301
1,1,2-Trichloroethane 52 11/06/2019 08241035070-1301
Trichloroethene 51 11/06/2019 08241025070-1301
Trichlorofluoromethane 55 11/06/2019 08241105060-1401
1,2,3-Trichloropropane 50 11/06/2019 08241005070-1301
1,3,5-Trimethylbenzene (Mesitylene)54 11/06/2019 08241085070-1301
1,2,4-Trimethylbenzene 54 11/06/2019 08241095070-1301
Vinyl chloride 56 11/06/2019 08241125060-1401
m+p - Xylenes 54 11/06/2019 08241075070-1301
o - Xylenes 52 11/06/2019 08241045070-1301
Surrogate Q % Rec Acceptance
Limit
1,2-Dichloroethane-d4 94 70-130
Bromofluorobenzene 101 70-130
Toluene-d8 97 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 criteriaP = The RPD between two GC columns exceeds 40%
+ = RPD is out of criteria_DL = Detection Limit
LOD = Limit of Detection
QC Data for Lot Number: UK05013
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.shealylab.com
Shealy Environmental Services, Inc.

Page 21 of 24
Chain of Custody
and
Miscellaneous Documents
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.shealylab.com
Shealy Environmental Services, Inc.

Page 22 of 24
SHEALY ENVIRONMENTAL SERVICES, INC.

106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.shealylab.com
Shealy Environmental Services, Inc.

Page 23 of 24
SHEALY ENVIRONMENTAL SERVICES, INC.

106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.shealylab.com
Shealy Environmental Services, Inc.

Page 24 of 24
SHEALY ENVIRONMENTAL SERVICES,INC.
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 Shealy Environmental Services,Inc.
Shealy Environmental Services,Inc.
106 Vantage Point Drive West Columbia,SC 29172 [phone] Fax [phone] www.shealylab.com
Report of Analysis
Terracon Consultants,Inc.
2401 Brentwood Road
Suite 107 I
Raleigh,NC 27604
Attention:Will Frazier
Project Name:Wilsonville General Store
Project Number:70149669A
Lot Number:UK21059
Date Completed:11/25/2019
11/26/2019 1:55 PM
Approved and released by:
Project Manager:Cathy S.Dover
Page 1 of 16
SHEALY ENVIRONMENTAL SERVICES,INC.
SC DHEC No:32010001 NELAC No:E87653 NC DENR No:329 NC Field Parameters No:5639
Shealy Environmental Services,Inc.
106 Vantage Point Drive West Columbia,SC 29172 [phone] Fax [phone] www.shealylab.com
Case Narrative
Terracon Consultants,Inc.
Lot Number:UK21059
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 NELAC standards,the Shealy Environmental Services,Inc.("Shealy")Quality
Assurance Management Plan (QAMP),standard operating procedures (SOPs),and Shealy policies.Any
exceptions to the NELAC standards,the QAMP,SOPs or policies are qualified on the results page or
discussed below.
If you have any questions regarding this report please contact the Shealy Project Manager listed on the
cover page.
Page 2 of 16
SHEALY ENVIRONMENTAL SERVICES, INC.
Sample Summary
Terracon Consultants, Inc.
Lot Number: UK21059

Project Name: Wilsonville General Store
Project Number: 70149669A
Sample Number Sample ID Matrix Date Sampled Date Received
001 11/20/2019 1210WSW-2 Aqueous 11/21/2019
002 11/20/2019 1145WSW-3 Aqueous 11/21/2019
(2 samples)
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Shealy Environmental Services, Inc.

Page 3 of 16
SHEALY ENVIRONMENTAL SERVICES, INC.
Detection Summary
Terracon Consultants, Inc.
Lot Number: UK21059

Project Name: Wilsonville General Store
Project Number: 70149669A
Sample Sample ID Matrix Parameter Method Result Q Units Page
(0 detections)
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Shealy Environmental Services, Inc.

Page 4 of 16
Volatile Organic Compounds by GC/MS
Description:Matrix:
Date Received:
Client:Laboratory ID:
Date Sampled:
Terracon Consultants, Inc.
WSW-2
UK21059-001
11/20/2019 1210
11/21/2019
Aqueous
Project Name: Wilsonville General Store
Project Number: 70149669A
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 SM 6200B-SM 6200B-2011 1 11/22/2019 1054 TML 36706
AnalyticalCAS
Parameter Number Method Result Q LOQ Units Run DL
Benzene 71-43-2 SM 6200B-ND 1ug/L0.400.50
Bromobenzene 108-86-1 SM 6200B-ND 1ug/L0.400.50
Bromochloromethane 74-97-5 SM 6200B-ND 1ug/L0.400.50
Bromodichloromethane 75-27-4 SM 6200B-ND 1ug/L0.400.50
Bromoform 75-25-2 SM 6200B-ND 1ug/L0.400.50
Bromomethane (Methyl bromide)74-83-9 SM 6200B-ND 1ug/L0.400.50
n-Butylbenzene 104-51-8 SM 6200B-ND 1ug/L0.400.50
sec-Butylbenzene 135-98-8 SM 6200B-ND 1ug/L0.400.50
tert-Butylbenzene 98-06-6 SM 6200B-ND 1ug/L0.400.50
Carbon tetrachloride 56-23-5 SM 6200B-ND 1ug/L0.400.50
Chlorobenzene 108-90-7 SM 6200B-ND 1ug/L0.400.50
Chloroethane 75-00-3 SM 6200B-ND 1ug/L0.400.50
Chloroform 67-66-3 SM 6200B-ND 1ug/L0.400.50
Chloromethane (Methyl chloride)74-87-3 SM 6200B-ND 1ug/L0.400.50
2-Chlorotoluene 95-49-8 SM 6200B-ND 1ug/L0.400.50
4-Chlorotoluene 106-43-4 SM 6200B-ND 1ug/L0.400.50
Dibromochloromethane 124-48-1 SM 6200B-ND 1ug/L0.400.50
1,2-Dibromoethane (EDB)106-93-4 SM 6200B-ND 1ug/L0.400.50
Dibromomethane (Methylene bromide)74-95-3 SM 6200B-ND 1ug/L0.400.50
1,2-Dichlorobenzene 95-50-1 SM 6200B-ND 1ug/L0.400.50
1,3-Dichlorobenzene 541-73-1 SM 6200B-ND 1ug/L0.400.50
1,4-Dichlorobenzene 106-46-7 SM 6200B-ND 1ug/L0.400.50
Dichlorodifluoromethane 75-71-8 SM 6200B-ND 1ug/L0.400.50
1,1-Dichloroethane 75-34-3 SM 6200B-ND 1ug/L0.400.50
1,2-Dichloroethane 107-06-2 SM 6200B-ND 1ug/L0.400.50
1,1-Dichloroethene 75-35-4 SM 6200B-ND 1ug/L0.400.50
cis-1,2-Dichloroethene 156-59-2 SM 6200B-ND 1ug/L0.400.50
trans-1,2-Dichloroethene 156-60-5 SM 6200B-ND 1ug/L0.400.50
1,2-Dichloropropane 78-87-5 SM 6200B-ND 1ug/L0.400.50
1,3-Dichloropropane 142-28-9 SM 6200B-ND 1ug/L0.400.50
2,2-Dichloropropane 594-20-7 SM 6200B-ND 1ug/L0.400.50
1,1-Dichloropropene 563-58-6 SM 6200B-ND 1ug/L0.400.50
cis-1,3-Dichloropropene 10061-01-5 SM 6200B-ND 1ug/L0.400.50
trans-1,3-Dichloropropene 10061-02-6 SM 6200B-ND 1ug/L0.400.50
Diisopropyl ether (IPE)108-20-3 SM 6200B-ND 1ug/L0.400.50
Ethylbenzene 100-41-4 SM 6200B-ND 1ug/L0.400.50
Hexachlorobutadiene 87-68-3 SM 6200B-ND 1ug/L0.400.50
Isopropylbenzene (Cumene)98-82-8 SM 6200B-ND 1ug/L0.400.50
p-Isopropyltoluene (p-Cymene)99-87-6 SM 6200B-ND 1ug/L0.400.50
Methyl tertiary butyl ether (MTBE)1634-04-4 SM 6200B-ND 1ug/L0.400.50
Methylene chloride 75-09-2 SM 6200B-ND 1ug/L0.400.50
Naphthalene 91-20-3 SM 6200B-ND 1ug/L0.400.50
n-Propylbenzene 103-65-1 SM 6200B-ND 1ug/L0.400.50
Styrene 100-42-5 SM 6200B-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
DL = Detection Limit
W = Reported on wet weight basis
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.shealylab.com
Shealy Environmental Services, Inc.

Page 5 of 16
Volatile Organic Compounds by GC/MS
Description:Matrix:
Date Received:
Client:Laboratory ID:
Date Sampled:
Terracon Consultants, Inc.
WSW-2
UK21059-001
11/20/2019 1210
11/21/2019
Aqueous
Project Name: Wilsonville General Store
Project Number: 70149669A
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 SM 6200B-SM 6200B-2011 1 11/22/2019 1054 TML 36706
AnalyticalCAS
Parameter Number Method Result Q LOQ Units Run DL
1,1,1,2-Tetrachloroethane 630-20-6 SM 6200B-ND 1ug/L0.400.50
1,1,2,2-Tetrachloroethane 79-34-5 SM 6200B-ND 1ug/L0.400.50
Tetrachloroethene 127-18-4 SM 6200B-ND 1ug/L0.400.50
Toluene 108-88-3 SM 6200B-ND 1ug/L0.400.50
1,1,2-Trichloro-1,2,2-Trifluoroethane 76-13-1 SM 6200B-ND 1ug/L0.400.50
1,2,3-Trichlorobenzene 87-61-6 SM 6200B-ND 1ug/L0.400.50
1,2,4-Trichlorobenzene 120-82-1 SM 6200B-ND 1ug/L0.400.50
1,1,1-Trichloroethane 71-55-6 SM 6200B-ND 1ug/L0.400.50
1,1,2-Trichloroethane 79-00-5 SM 6200B-ND 1ug/L0.400.50
Trichloroethene 79-01-6 SM 6200B-ND 1ug/L0.400.50
Trichlorofluoromethane 75-69-4 SM 6200B-ND 1ug/L0.400.50
1,2,3-Trichloropropane 96-18-4 SM 6200B-ND 1ug/L0.400.50
1,3,5-Trimethylbenzene (Mesitylene)108-67-8 SM 6200B-ND 1ug/L0.400.50
1,2,4-Trimethylbenzene 95-63-6 SM 6200B-ND 1ug/L0.400.50
Vinyl chloride 75-01-4 SM 6200B-ND 1ug/L0.400.50
m+p - Xylenes 179601-23-1 SM 6200B-ND 1ug/L0.400.50
o - Xylenes 95-47-6 SM 6200B-ND 1ug/L0.400.50
AcceptanceRun 1
Surrogate Q % Recovery Limits
1,2-Dichloroethane-d4 95 70-130
Bromofluorobenzene 97 70-130
Toluene-d8 98 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
DL = Detection Limit
W = Reported on wet weight basis
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.shealylab.com
Shealy Environmental Services, Inc.

Page 6 of 16
Volatile Organic Compounds by GC/MS
Description:Matrix:
Date Received:
Client:Laboratory ID:
Date Sampled:
Terracon Consultants, Inc.
WSW-3
UK21059-002
11/20/2019 1145
11/21/2019
Aqueous
Project Name: Wilsonville General Store
Project Number: 70149669A
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 SM 6200B-SM 6200B-2011 1 11/22/2019 1118 TML 36706
AnalyticalCAS
Parameter Number Method Result Q LOQ Units Run DL
Benzene 71-43-2 SM 6200B-ND 1ug/L0.400.50
Bromobenzene 108-86-1 SM 6200B-ND 1ug/L0.400.50
Bromochloromethane 74-97-5 SM 6200B-ND 1ug/L0.400.50
Bromodichloromethane 75-27-4 SM 6200B-ND 1ug/L0.400.50
Bromoform 75-25-2 SM 6200B-ND 1ug/L0.400.50
Bromomethane (Methyl bromide)74-83-9 SM 6200B-ND 1ug/L0.400.50
n-Butylbenzene 104-51-8 SM 6200B-ND 1ug/L0.400.50
sec-Butylbenzene 135-98-8 SM 6200B-ND 1ug/L0.400.50
tert-Butylbenzene 98-06-6 SM 6200B-ND 1ug/L0.400.50
Carbon tetrachloride 56-23-5 SM 6200B-ND 1ug/L0.400.50
Chlorobenzene 108-90-7 SM 6200B-ND 1ug/L0.400.50
Chloroethane 75-00-3 SM 6200B-ND 1ug/L0.400.50
Chloroform 67-66-3 SM 6200B-ND 1ug/L0.400.50
Chloromethane (Methyl chloride)74-87-3 SM 6200B-ND 1ug/L0.400.50
2-Chlorotoluene 95-49-8 SM 6200B-ND 1ug/L0.400.50
4-Chlorotoluene 106-43-4 SM 6200B-ND 1ug/L0.400.50
Dibromochloromethane 124-48-1 SM 6200B-ND 1ug/L0.400.50
1,2-Dibromoethane (EDB)106-93-4 SM 6200B-ND 1ug/L0.400.50
Dibromomethane (Methylene bromide)74-95-3 SM 6200B-ND 1ug/L0.400.50
1,2-Dichlorobenzene 95-50-1 SM 6200B-ND 1ug/L0.400.50
1,3-Dichlorobenzene 541-73-1 SM 6200B-ND 1ug/L0.400.50
1,4-Dichlorobenzene 106-46-7 SM 6200B-ND 1ug/L0.400.50
Dichlorodifluoromethane 75-71-8 SM 6200B-ND 1ug/L0.400.50
1,1-Dichloroethane 75-34-3 SM 6200B-ND 1ug/L0.400.50
1,2-Dichloroethane 107-06-2 SM 6200B-ND 1ug/L0.400.50
1,1-Dichloroethene 75-35-4 SM 6200B-ND 1ug/L0.400.50
cis-1,2-Dichloroethene 156-59-2 SM 6200B-ND 1ug/L0.400.50
trans-1,2-Dichloroethene 156-60-5 SM 6200B-ND 1ug/L0.400.50
1,2-Dichloropropane 78-87-5 SM 6200B-ND 1ug/L0.400.50
1,3-Dichloropropane 142-28-9 SM 6200B-ND 1ug/L0.400.50
2,2-Dichloropropane 594-20-7 SM 6200B-ND 1ug/L0.400.50
1,1-Dichloropropene 563-58-6 SM 6200B-ND 1ug/L0.400.50
cis-1,3-Dichloropropene 10061-01-5 SM 6200B-ND 1ug/L0.400.50
trans-1,3-Dichloropropene 10061-02-6 SM 6200B-ND 1ug/L0.400.50
Diisopropyl ether (IPE)108-20-3 SM 6200B-ND 1ug/L0.400.50
Ethylbenzene 100-41-4 SM 6200B-ND 1ug/L0.400.50
Hexachlorobutadiene 87-68-3 SM 6200B-ND 1ug/L0.400.50
Isopropylbenzene (Cumene)98-82-8 SM 6200B-ND 1ug/L0.400.50
p-Isopropyltoluene (p-Cymene)99-87-6 SM 6200B-ND 1ug/L0.400.50
Methyl tertiary butyl ether (MTBE)1634-04-4 SM 6200B-ND 1ug/L0.400.50
Methylene chloride 75-09-2 SM 6200B-ND 1ug/L0.400.50
Naphthalene 91-20-3 SM 6200B-ND 1ug/L0.400.50
n-Propylbenzene 103-65-1 SM 6200B-ND 1ug/L0.400.50
Styrene 100-42-5 SM 6200B-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
DL = Detection Limit
W = Reported on wet weight basis
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Page 7 of 16
Volatile Organic Compounds by GC/MS
Description:Matrix:
Date Received:
Client:Laboratory ID:
Date Sampled:
Terracon Consultants, Inc.
WSW-3
UK21059-002
11/20/2019 1145
11/21/2019
Aqueous
Project Name: Wilsonville General Store
Project Number: 70149669A
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 SM 6200B-SM 6200B-2011 1 11/22/2019 1118 TML 36706
AnalyticalCAS
Parameter Number Method Result Q LOQ Units Run DL
1,1,1,2-Tetrachloroethane 630-20-6 SM 6200B-ND 1ug/L0.400.50
1,1,2,2-Tetrachloroethane 79-34-5 SM 6200B-ND 1ug/L0.400.50
Tetrachloroethene 127-18-4 SM 6200B-ND 1ug/L0.400.50
Toluene 108-88-3 SM 6200B-ND 1ug/L0.400.50
1,1,2-Trichloro-1,2,2-Trifluoroethane 76-13-1 SM 6200B-ND 1ug/L0.400.50
1,2,3-Trichlorobenzene 87-61-6 SM 6200B-ND 1ug/L0.400.50
1,2,4-Trichlorobenzene 120-82-1 SM 6200B-ND 1ug/L0.400.50
1,1,1-Trichloroethane 71-55-6 SM 6200B-ND 1ug/L0.400.50
1,1,2-Trichloroethane 79-00-5 SM 6200B-ND 1ug/L0.400.50
Trichloroethene 79-01-6 SM 6200B-ND 1ug/L0.400.50
Trichlorofluoromethane 75-69-4 SM 6200B-ND 1ug/L0.400.50
1,2,3-Trichloropropane 96-18-4 SM 6200B-ND 1ug/L0.400.50
1,3,5-Trimethylbenzene (Mesitylene)108-67-8 SM 6200B-ND 1ug/L0.400.50
1,2,4-Trimethylbenzene 95-63-6 SM 6200B-ND 1ug/L0.400.50
Vinyl chloride 75-01-4 SM 6200B-ND 1ug/L0.400.50
m+p - Xylenes 179601-23-1 SM 6200B-ND 1ug/L0.400.50
o - Xylenes 95-47-6 SM 6200B-ND 1ug/L0.400.50
AcceptanceRun 1
Surrogate Q % Recovery Limits
1,2-Dichloroethane-d4 94 70-130
Bromofluorobenzene 97 70-130
Toluene-d8 96 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
DL = Detection Limit
W = Reported on wet weight basis
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Page 8 of 16
QC Summary
QC Data for Lot Number: UK21059
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Shealy Environmental Services, Inc.

Page 9 of 16
Volatile Organic Compounds by GC/MS - MB
Batch:Prep Method:
Sample ID:UQ36706-001
36706 SM 6200B-2011
Analytical Method:SM 6200B-2011
Matrix:Aqueous
Parameter Result Q LOQ DL Units Analysis DateDil
Benzene ND 11/22/2019 09420.50 0.40 ug/L1
Bromobenzene ND 11/22/2019 09420.50 0.40 ug/L1
Bromochloromethane ND 11/22/2019 09420.50 0.40 ug/L1
Bromodichloromethane ND 11/22/2019 09420.50 0.40 ug/L1
Bromoform ND 11/22/2019 09420.50 0.40 ug/L1
Bromomethane (Methyl bromide)ND 11/22/2019 09420.50 0.40 ug/L1
n-Butylbenzene ND 11/22/2019 09420.50 0.40 ug/L1
sec-Butylbenzene ND 11/22/2019 09420.50 0.40 ug/L1
tert-Butylbenzene ND 11/22/2019 09420.50 0.40 ug/L1
Carbon tetrachloride ND 11/22/2019 09420.50 0.40 ug/L1
Chlorobenzene ND 11/22/2019 09420.50 0.40 ug/L1
Chloroethane ND 11/22/2019 09420.50 0.40 ug/L1
Chloroform ND 11/22/2019 09420.50 0.40 ug/L1
Chloromethane (Methyl chloride)ND 11/22/2019 09420.50 0.40 ug/L1
2-Chlorotoluene ND 11/22/2019 09420.50 0.40 ug/L1
4-Chlorotoluene ND 11/22/2019 09420.50 0.40 ug/L1
Dibromochloromethane ND 11/22/2019 09420.50 0.40 ug/L1
1,2-Dibromoethane (EDB)ND 11/22/2019 09420.50 0.40 ug/L1
Dibromomethane (Methylene bromide)ND 11/22/2019 09420.50 0.40 ug/L1
1,2-Dichlorobenzene ND 11/22/2019 09420.50 0.40 ug/L1
1,3-Dichlorobenzene ND 11/22/2019 09420.50 0.40 ug/L1
1,4-Dichlorobenzene ND 11/22/2019 09420.50 0.40 ug/L1
Dichlorodifluoromethane ND 11/22/2019 09420.50 0.40 ug/L1
1,1-Dichloroethane ND 11/22/2019 09420.50 0.40 ug/L1
1,2-Dichloroethane ND 11/22/2019 09420.50 0.40 ug/L1
1,1-Dichloroethene ND 11/22/2019 09420.50 0.40 ug/L1
cis-1,2-Dichloroethene ND 11/22/2019 09420.50 0.40 ug/L1
trans-1,2-Dichloroethene ND 11/22/2019 09420.50 0.40 ug/L1
1,2-Dichloropropane ND 11/22/2019 09420.50 0.40 ug/L1
1,3-Dichloropropane ND 11/22/2019 09420.50 0.40 ug/L1
2,2-Dichloropropane ND 11/22/2019 09420.50 0.40 ug/L1
1,1-Dichloropropene ND 11/22/2019 09420.50 0.40 ug/L1
cis-1,3-Dichloropropene ND 11/22/2019 09420.50 0.40 ug/L1
trans-1,3-Dichloropropene ND 11/22/2019 09420.50 0.40 ug/L1
Diisopropyl ether (IPE)ND 11/22/2019 09420.50 0.40 ug/L1
Ethylbenzene ND 11/22/2019 09420.50 0.40 ug/L1
Hexachlorobutadiene ND 11/22/2019 09420.50 0.40 ug/L1
Isopropylbenzene (Cumene)ND 11/22/2019 09420.50 0.40 ug/L1
p-Isopropyltoluene (p-Cymene)ND 11/22/2019 09420.50 0.40 ug/L1
Methyl tertiary butyl ether (MTBE)ND 11/22/2019 09420.50 0.40 ug/L1
Methylene chloride ND 11/22/2019 09420.50 0.40 ug/L1
Naphthalene ND 11/22/2019 09420.50 0.40 ug/L1
n-Propylbenzene ND 11/22/2019 09420.50 0.40 ug/L1
Styrene ND 11/22/2019 09420.50 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 criteriaP = The RPD between two GC columns exceeds 40%
+ = RPD is out of criteria_DL = Detection Limit
LOD = Limit of Detection
QC Data for Lot Number: UK21059
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Shealy Environmental Services, Inc.

Page 10 of 16
Volatile Organic Compounds by GC/MS - MB
Batch:Prep Method:
Sample ID:UQ36706-001
36706 SM 6200B-2011
Analytical Method:SM 6200B-2011
Matrix:Aqueous
Parameter Result Q LOQ DL Units Analysis DateDil
1,1,1,2-Tetrachloroethane ND 11/22/2019 09420.50 0.40 ug/L1
1,1,2,2-Tetrachloroethane ND 11/22/2019 09420.50 0.40 ug/L1
Tetrachloroethene ND 11/22/2019 09420.50 0.40 ug/L1
Toluene ND 11/22/2019 09420.50 0.40 ug/L1
1,1,2-Trichloro-1,2,2-Trifluoroethane ND 11/22/2019 09420.50 0.40 ug/L1
1,2,3-Trichlorobenzene ND 11/22/2019 09420.50 0.40 ug/L1
1,2,4-Trichlorobenzene ND 11/22/2019 09420.50 0.40 ug/L1
1,1,1-Trichloroethane ND 11/22/2019 09420.50 0.40 ug/L1
1,1,2-Trichloroethane ND 11/22/2019 09420.50 0.40 ug/L1
Trichloroethene ND 11/22/2019 09420.50 0.40 ug/L1
Trichlorofluoromethane ND 11/22/2019 09420.50 0.40 ug/L1
1,2,3-Trichloropropane ND 11/22/2019 09420.50 0.40 ug/L1
1,3,5-Trimethylbenzene (Mesitylene)ND 11/22/2019 09420.50 0.40 ug/L1
1,2,4-Trimethylbenzene ND 11/22/2019 09420.50 0.40 ug/L1
Vinyl chloride ND 11/22/2019 09420.50 0.40 ug/L1
m+p - Xylenes ND 11/22/2019 09420.50 0.40 ug/L1
o - Xylenes ND 11/22/2019 09420.50 0.40 ug/L1
Surrogate Q % Rec Acceptance
Limit
1,2-Dichloroethane-d4 94 70-130
Bromofluorobenzene 99 70-130
Toluene-d8 96 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 criteriaP = The RPD between two GC columns exceeds 40%
+ = RPD is out of criteria_DL = Detection Limit
LOD = Limit of Detection
QC Data for Lot Number: UK21059
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Shealy Environmental Services, Inc.

Page 11 of 16
Volatile Organic Compounds by GC/MS - LCS
Batch:Prep Method:
Sample ID:UQ36706-002
36706 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 49 11/22/2019 0832995070-1301
Bromobenzene 49 11/22/2019 0832985070-1301
Bromochloromethane 48 11/22/2019 0832965070-1301
Bromodichloromethane 51 11/22/2019 08321025070-1301
Bromoform 44 11/22/2019 0832875070-1301
Bromomethane (Methyl bromide)47 11/22/2019 0832935060-1401
n-Butylbenzene 52 11/22/2019 08321045070-1301
sec-Butylbenzene 52 11/22/2019 08321045070-1301
tert-Butylbenzene 50 11/22/2019 08321015070-1301
Carbon tetrachloride 49 11/22/2019 0832995070-1301
Chlorobenzene 48 11/22/2019 0832975070-1301
Chloroethane 47 11/22/2019 0832955042-1631
Chloroform 48 11/22/2019 0832975070-1301
Chloromethane (Methyl chloride)49 11/22/2019 0832985020-1581
2-Chlorotoluene 50 11/22/2019 08321005070-1301
4-Chlorotoluene 50 11/22/2019 08321005070-1301
Dibromochloromethane 51 11/22/2019 08321025070-1301
1,2-Dibromoethane (EDB)50 11/22/2019 08321005070-1301
Dibromomethane (Methylene bromide)48 11/22/2019 0832975070-1301
1,2-Dichlorobenzene 49 11/22/2019 0832985070-1301
1,3-Dichlorobenzene 49 11/22/2019 0832985070-1301
1,4-Dichlorobenzene 48 11/22/2019 0832955070-1301
Dichlorodifluoromethane 54 11/22/2019 08321085060-1401
1,1-Dichloroethane 49 11/22/2019 0832985070-1301
1,2-Dichloroethane 47 11/22/2019 0832955070-1301
1,1-Dichloroethene 49 11/22/2019 0832985070-1301
cis-1,2-Dichloroethene 49 11/22/2019 0832975070-1301
trans-1,2-Dichloroethene 48 11/22/2019 0832955070-1301
1,2-Dichloropropane 51 11/22/2019 08321015070-1301
1,3-Dichloropropane 49 11/22/2019 0832985070-1301
2,2-Dichloropropane 48 11/22/2019 0832965070-1301
1,1-Dichloropropene 49 11/22/2019 0832985070-1301
cis-1,3-Dichloropropene 53 11/22/2019 08321075070-1301
trans-1,3-Dichloropropene 52 11/22/2019 08321035070-1301
Diisopropyl ether (IPE)49 11/22/2019 0832995070-1301
Ethylbenzene 50 11/22/2019 08321005070-1301
Hexachlorobutadiene 50 11/22/2019 0832995070-1301
Isopropylbenzene (Cumene)52 11/22/2019 08321055070-1301
p-Isopropyltoluene (p-Cymene)53 11/22/2019 08321075070-1301
Methyl tertiary butyl ether (MTBE)48 11/22/2019 0832955070-1301
Methylene chloride 46 11/22/2019 0832935070-1301
Naphthalene 55 11/22/2019 08321095050-1401
n-Propylbenzene 52 11/22/2019 08321045070-1301
Styrene 53 11/22/2019 08321065070-1301
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 criteriaP = The RPD between two GC columns exceeds 40%
+ = RPD is out of criteria_DL = Detection Limit
LOD = Limit of Detection
QC Data for Lot Number: UK21059
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Shealy Environmental Services, Inc.

Page 12 of 16
Volatile Organic Compounds by GC/MS - LCS
Batch:Prep Method:
Sample ID:UQ36706-002
36706 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 51 11/22/2019 08321035070-1301
1,1,2,2-Tetrachloroethane 51 11/22/2019 08321025070-1301
Tetrachloroethene 49 11/22/2019 0832975070-1301
Toluene 49 11/22/2019 0832985070-1301
1,1,2-Trichloro-1,2,2-Trifluoroethane 48 11/22/2019 0832955070-1301
1,2,3-Trichlorobenzene 50 11/22/2019 08321005070-1301
1,2,4-Trichlorobenzene 51 11/22/2019 08321015070-1301
1,1,1-Trichloroethane 49 11/22/2019 0832975070-1301
1,1,2-Trichloroethane 48 11/22/2019 0832975070-1301
Trichloroethene 49 11/22/2019 0832985070-1301
Trichlorofluoromethane 49 11/22/2019 0832975060-1401
1,2,3-Trichloropropane 48 11/22/2019 0832965070-1301
1,3,5-Trimethylbenzene (Mesitylene)52 11/22/2019 08321045070-1301
1,2,4-Trimethylbenzene 53 11/22/2019 08321065070-1301
Vinyl chloride 48 11/22/2019 0832975060-1401
m+p - Xylenes 51 11/22/2019 08321015070-1301
o - Xylenes 52 11/22/2019 08321045070-1301
Surrogate Q % Rec Acceptance
Limit
1,2-Dichloroethane-d4 90 70-130
Bromofluorobenzene 98 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 criteriaP = The RPD between two GC columns exceeds 40%
+ = RPD is out of criteria_DL = Detection Limit
LOD = Limit of Detection
QC Data for Lot Number: UK21059
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Shealy Environmental Services, Inc.

Page 13 of 16
Chain of Custody
and
Miscellaneous Documents
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Page 14 of 16
SHEALY ENVIRONMENTAL SERVICES, INC.

106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.shealylab.com
Shealy Environmental Services, Inc.

Page 15 of 16
SHEALY ENVIRONMENTAL SERVICES, INC.

106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.shealylab.com
Shealy Environmental Services, Inc.

Page 16 of 16