RA-552_3534_CA_LTTRPT_20201123

MISCELLANEOUS LETTER REPORT
Wilsonville General Store (Incident #3534)
10580 U.S. Highway 64 East
Wilsonville, Chatham County, North Carolina
November 23, 2020
Terracon Project No. 70149669B

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

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

Terracon Consultants, Inc. 2401 Brentwood Road, Suite 107 Raleigh, NC 27604
P [919] 873 2211 F [919] 873 9555 terracon.com
November 23, 2020

Mr. Mark Petermann
North Carolina Department of Environmental Quality
Division of Waste Management
1646 Mail Service Center
Raleigh, North Carolina 27699-1646
Email: [e-mail]

Re: Miscellaneous Letter Report
Wilsonville General Store
10580 U.S. Highway 64 East
Wilsonville, Chatham County, North Carolina
UST Number: RA-552
Incident Number: 3534
Terracon Project No. 70149669B

Dear Mr. Petermann:

Terracon Consultants, Inc. (Terracon) is pleased to submit this miscellaneous letter report for the
above referenced property. This report has been prepared in general accordance with North
Carolina Department of Environmental Quality (NCDEQ), UST Section Guidelines for Assessment
and Corrective Action for UST Releases, dated July 15, 2008, revised December 2013 and Task
Authorization No. 02, approved on October 29, 2020.

The Wilsonville General Store site, located at 10580 U.S. Highway 64 East in Wilsonville, North
Carolina (Figure 1) (site), is comprised of 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. The site has been
developed as a gasoline retail facility since the late 1930s. A release was discovered in August 1987
from a former on-site underground storage tank (UST) system, which consisted of:

◼ three 6,000-gallon gasoline USTs;
◼ one 4,000-gallon gasoline UST; and
◼ one 2,000-gallon diesel UST.

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. Information pertaining to these water supply wells is
provided on Table 1 and the location of WSW-3 and WSW-8 is shown on Figure 2. Municipal water
is reportedly available to properties located within 1,000 feet of the source area.

Wilsonville General Store
Wilsonville, North Carolina
Terracon Project #70149669B
Incident No. 3534
November 23, 2020

Responsive ■ Resourceful ■ Reliable 2

Terracon personnel mobilized to the site on November 5, 2020 to collect a groundwater sample from
WSW-8. The groundwater sample from WSW-8 was collected and placed in laboratory-supplied
glassware, labeled and stored in an ice-packed cooler. The sample along with the chain-of-custody
documentation were delivered to Pace Analytical Services, LLC in West Columbia, South Carolina
for analysis by EPA Method 6200B including methyl tert-butyl ether (MTBE), ethylene dibromide
(EDB), and di-isopropyl ether (IPE.)

Compounds were not detected above laboratory reporting limits in WSW-8. Groundwater analytical
data are summarized in Table 2. The laboratory report and chain of custody are included in
Appendix A.

This task authorization was proposed and authorized in response to a request by Ms. Judith Intrator
(the owner of the WSW-3/WSW-8 property) to sample WSW-8 after October 2020 analytical results
in WSW-3 reported a detection of MTBE above laboratory reporting limits but below the 15A NCAC
groundwater quality standard for the compound. Terracon and the property owner discussed
possible options for potable water at the residence which included municipal water connection and
switching plumbing to the residence from WSW-3 to WSW-8.

Based on discussions with the NCDEQ project manager, the property owner, and the location of the
nearest municipal water line, it appears that the most feasible option to resolve the property owner’s
concerns is to re-configure the plumbing in the WSW-3 well house to direct water from WSW-8 to
the residence and water from WSW-3 to the irrigation system on the property.

According to the property owner, Ms. Judith Intrator, WSW-8 is reportedly installed at 550-feet below
land surface and WSW-3 is reportedly installed at 300-feet below land surface. It should be noted
that although petroleum compounds are not currently being detected in WSW-8 based on its current
pumping rate and frequency, if WSW-8 is made the primary source of potable water for the
residence and its pumping rate and frequency are significantly increased, it is possible that the
petroleum compounds could be pulled toward WSW-8 and be detected in future sampling. Future
sampling events should include sampling for WSW-3 and WSW-8, in addition to WSW-4 to monitor
potential contaminates drawn towards WSW-8.

If you have any questions regarding this report or the assessment activities, please contact us at
[phone].

Sincerely,
Terracon Consultants, Inc.

Kyle F. Church Justin L. Fabriziani, RSM
Field Scientist Environmental Department Manager

for:

Wilsonville General Store
Wilsonville, North Carolina
Terracon Project #70149669B
Incident No. 3534
November 23, 2020

Responsive ■ Resourceful ■ Reliable 2

Attachments: Exhibit 1 – Site Location Map
Exhibit 2 – Water Supply Well Location Map

Table 1 – Water Supply Well Information
Table 2 – Summary of Groundwater Analytical Results

Appendix A – Laboratory Analytical Results and Chain of Custody Form
Appendix B – Photo log and Field Notes

FIGURES
Copyright:© 2013 National Geographic Society, i-cubed
Site
±
File Path:
Date:
PM:
Drawn By:
Checked By:
Approved By:
1:24,000
Project No.
Scale:
1
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
KFC 70149669B
KFC
JLF
JLF November 2020 Phone: [phone] Fax: [phone]
FIGURENO.
&>
&>
&>
&>
&>&>
&>
&>
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
&>
&>
File Path:
Date:
Project No.
Scale:
PM:
Drawn By:
Checked By:
Approved By:2401 Brentwood Road, Suite 107 Raleigh, NC 27604Phone: [phone] Fax: [phone]
1 in= 500 ft
Water Supply Well Location Map
±
KFC 70149669B
KFC
JLF November 2020
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
2
FIGURENO.
JLF 70149669B

TABLES
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 1
Water Supply Well Information
Wilsonville General Store
Wilsonville, North Carolina
Terracon Project Number 70149669B
NCDEQ Incident No. 3534
Well Status/Use Parcel ID NotesWell No. Property Owner Mailing Address Property Address
Distance/Directions
from source area
Well/Sample
I.D.
Date Collected
(mm/dd/yy)
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
10/01/20 <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 0.60 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50
11/05/20
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
07/28/20
11/05/20 <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
Attempted to sample - power turned off
Not Sampled Xylenes (Total)p-IsopropyltolueneMethyl tert-Butyl Ether (MTBE)Naphthalenen-PropylbenzeneStyreneEthylbenzeneIsopropylbenzeneToluene1,2,4-Trimethylbenzene1,3,5-TrimethylbenzeneNCDEQ Incident No. 3534
Terracon Project Number 70149669B
Analytical Method EPA Method 6200B
Contaminant of Concern →Benzenen-Butylbenzenesec-Butylbenzenetert-ButylbenzeneChlorobenzeneChloroethaneChloromethane1,2-Dibromoethane (EDB)1,2-Dichloroethane1,2-DichloropropaneDi-isopropyl Ether (IPE)Residential VISLs (µg/L)
Non-Residential VISLs (µg/L)
WSW-3
GCL (µg/L)
WSW-8
2L Standard (µg/L)
Table 2
Summary of Groundwater Analytical Results
Wilsonville General Store
Wilsonville, North Carolina

APPENDIX A
LABORATORY ANALYTICAL RESULTS AND
CHAIN-OF-CUSTODY FORM

The electronic signature above is the equivalent of a handwritten signature.
This report shall not be reproduced,except in its entirety,without the written approval of Pace Analytical Services,LLC.
Pace Analytical Services,LLC (formerly Shealy Environmental Services,Inc.)
106 Vantage Point Drive West Columbia,SC 29172
Tel:[phone] Fax:[phone] www.pacelabs.com
Report of Analysis
Terracon Consultants,Inc.
2401 Brentwood Road
Suite 107 I
Raleigh,NC 27604
Attention:Kyle Church
Project Name:Wilsonville General Store
Project Number:70149669A
Lot Number:VK07040
Date Completed:11/12/2020
11/12/2020 9:43 PM
Approved and released by:
Project Manager II:Cathy S.Dover
Page 1 of 16
PACE ANALYTICAL SERVICES,LLC
SC DHEC No:32010001 NELAC No:E87653 NC DENR No:329 NC Field Parameters No:5639
Pace Analytical Services,LLC (formerly Shealy Environmetal Services,Inc.)
106 Vantage Point Drive West Columbia,SC 29172 [phone] Fax [phone] www.pacelabs.com
Case Narrative
Terracon Consultants,Inc.
Lot Number:VK07040
This Report of Analysis contains the analytical result(s)for the sample(s)listed on the Sample Summary
following this Case Narrative.The sample receiving date is documented in the header information
associated with each sample.
All results listed in this report relate only to the samples that are contained within this report.
Sample receipt,sample analysis,and data review have been performed in accordance with the most
current approved The NELAC Institute (TNI)standards,the Pace Analytical Services,LLC ("Pace")
Laboratory Quality Manual,standard operating procedures (SOPs),and Pace policies.Any exceptions to
the TNI standards,the Laboratory Quality Manual,SOPs or policies are qualified on the results page or
discussed below.
If you have any questions regarding this report please contact the Pace Project Manager listed on the
cover page.
Page 2 of 16
PACE ANALYTICAL SERVICES, LLC
Sample Summary
Terracon Consultants, Inc.
Lot Number: VK07040

Project Name: Wilsonville General Store
Project Number: 70149669A
Sample Number Sample ID Matrix Date Sampled Date Received
001 11/05/2020 1215WSW-8 Aqueous 11/06/2020
002 11/05/2020 1220FB-01 Aqueous 11/06/2020
003 11/05/2020TRIP BLANK Aqueous 11/06/2020
(3 samples)
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Page 3 of 16
PACE ANALYTICAL SERVICES, LLC
Detection Summary
Terracon Consultants, Inc.
Lot Number: VK07040

Project Name: Wilsonville General Store
Project Number: 70149669A
Sample Sample ID Matrix Parameter Method Result Q Units Page
(0 detections)
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Page 4 of 16
Volatile Organic Compounds by GC/MS
Description:Matrix:
Date Received:
Client:Laboratory ID:
Date Sampled:
Terracon Consultants, Inc.
WSW-8
VK07040-001
11/05/2020 1215
11/06/2020
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 11/11/2020 1724 TML 73075
AnalyticalCAS
Parameter Number Method Result Q LOQ Units Run DL
Benzene 71-43-2 SM 6200B-2011 ND 1ug/L0.400.50
Bromobenzene 108-86-1 SM 6200B-2011 ND 1ug/L0.400.50
Bromochloromethane 74-97-5 SM 6200B-2011 ND 1ug/L0.400.50
Bromodichloromethane 75-27-4 SM 6200B-2011 ND 1ug/L0.400.50
Bromoform 75-25-2 SM 6200B-2011 ND 1ug/L0.400.50
Bromomethane (Methyl bromide)74-83-9 SM 6200B-2011 ND 1ug/L0.400.50
n-Butylbenzene 104-51-8 SM 6200B-2011 ND 1ug/L0.400.50
sec-Butylbenzene 135-98-8 SM 6200B-2011 ND 1ug/L0.400.50
tert-Butylbenzene 98-06-6 SM 6200B-2011 ND 1ug/L0.400.50
Carbon tetrachloride 56-23-5 SM 6200B-2011 ND 1ug/L0.400.50
Chlorobenzene 108-90-7 SM 6200B-2011 ND 1ug/L0.400.50
Chloroethane 75-00-3 SM 6200B-2011 ND 1ug/L0.400.50
Chloroform 67-66-3 SM 6200B-2011 ND 1ug/L0.400.50
Chloromethane (Methyl chloride)74-87-3 SM 6200B-2011 ND 1ug/L0.400.50
2-Chlorotoluene 95-49-8 SM 6200B-2011 ND 1ug/L0.400.50
4-Chlorotoluene 106-43-4 SM 6200B-2011 ND 1ug/L0.400.50
Dibromochloromethane 124-48-1 SM 6200B-2011 ND 1ug/L0.400.50
1,2-Dibromoethane (EDB)106-93-4 SM 6200B-2011 ND 1ug/L0.400.50
Dibromomethane (Methylene bromide)74-95-3 SM 6200B-2011 ND 1ug/L0.400.50
1,2-Dichlorobenzene 95-50-1 SM 6200B-2011 ND 1ug/L0.400.50
1,3-Dichlorobenzene 541-73-1 SM 6200B-2011 ND 1ug/L0.400.50
1,4-Dichlorobenzene 106-46-7 SM 6200B-2011 ND 1ug/L0.400.50
Dichlorodifluoromethane 75-71-8 SM 6200B-2011 ND 1ug/L0.400.50
1,1-Dichloroethane 75-34-3 SM 6200B-2011 ND 1ug/L0.400.50
1,2-Dichloroethane 107-06-2 SM 6200B-2011 ND 1ug/L0.400.50
1,1-Dichloroethene 75-35-4 SM 6200B-2011 ND 1ug/L0.400.50
cis-1,2-Dichloroethene 156-59-2 SM 6200B-2011 ND 1ug/L0.400.50
trans-1,2-Dichloroethene 156-60-5 SM 6200B-2011 ND 1ug/L0.400.50
1,2-Dichloropropane 78-87-5 SM 6200B-2011 ND 1ug/L0.400.50
1,3-Dichloropropane 142-28-9 SM 6200B-2011 ND 1ug/L0.400.50
2,2-Dichloropropane 594-20-7 SM 6200B-2011 ND 1ug/L0.400.50
1,1-Dichloropropene 563-58-6 SM 6200B-2011 ND 1ug/L0.400.50
cis-1,3-Dichloropropene 10061-01-5 SM 6200B-2011 ND 1ug/L0.400.50
trans-1,3-Dichloropropene 10061-02-6 SM 6200B-2011 ND 1ug/L0.400.50
Diisopropyl ether (IPE)108-20-3 SM 6200B-2011 ND 1ug/L0.400.50
Ethylbenzene 100-41-4 SM 6200B-2011 ND 1ug/L0.400.50
Hexachlorobutadiene 87-68-3 SM 6200B-2011 ND 1ug/L0.400.50
Isopropylbenzene (Cumene)98-82-8 SM 6200B-2011 ND 1ug/L0.400.50
p-Isopropyltoluene (p-Cymene)99-87-6 SM 6200B-2011 ND 1ug/L0.400.50
Methyl tertiary butyl ether (MTBE)1634-04-4 SM 6200B-2011 ND 1ug/L0.400.50
Methylene chloride 75-09-2 SM 6200B-2011 ND 1ug/L0.400.50
Naphthalene 91-20-3 SM 6200B-2011 ND 1ug/L0.400.50
n-Propylbenzene 103-65-1 SM 6200B-2011 ND 1ug/L0.400.50
Styrene 100-42-5 SM 6200B-2011 ND 1ug/L0.400.50
J = Estimated result < LOQ and > DL_
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range
P = The RPD between two GC columns exceeds 40%ND = Not detected at or above the DL N = Recovery is out of criteria
H = Out of holding time
DL = Detection Limit
W = Reported on wet weight basis
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Page 5 of 16
Volatile Organic Compounds by GC/MS
Description:Matrix:
Date Received:
Client:Laboratory ID:
Date Sampled:
Terracon Consultants, Inc.
WSW-8
VK07040-001
11/05/2020 1215
11/06/2020
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 11/11/2020 1724 TML 73075
AnalyticalCAS
Parameter Number Method Result Q LOQ Units Run DL
1,1,1,2-Tetrachloroethane 630-20-6 SM 6200B-2011 ND 1ug/L0.400.50
1,1,2,2-Tetrachloroethane 79-34-5 SM 6200B-2011 ND 1ug/L0.400.50
Tetrachloroethene 127-18-4 SM 6200B-2011 ND 1ug/L0.400.50
Toluene 108-88-3 SM 6200B-2011 ND 1ug/L0.400.50
1,1,2-Trichloro-1,2,2-Trifluoroethane 76-13-1 SM 6200B-2011 ND 1ug/L0.400.50
1,2,3-Trichlorobenzene 87-61-6 SM 6200B-2011 ND 1ug/L0.400.50
1,2,4-Trichlorobenzene 120-82-1 SM 6200B-2011 ND 1ug/L0.400.50
1,1,1-Trichloroethane 71-55-6 SM 6200B-2011 ND 1ug/L0.400.50
1,1,2-Trichloroethane 79-00-5 SM 6200B-2011 ND 1ug/L0.400.50
Trichloroethene 79-01-6 SM 6200B-2011 ND 1ug/L0.400.50
Trichlorofluoromethane 75-69-4 SM 6200B-2011 ND 1ug/L0.400.50
1,2,3-Trichloropropane 96-18-4 SM 6200B-2011 ND 1ug/L0.400.50
1,3,5-Trimethylbenzene (Mesitylene)108-67-8 SM 6200B-2011 ND 1ug/L0.400.50
1,2,4-Trimethylbenzene 95-63-6 SM 6200B-2011 ND 1ug/L0.400.50
Vinyl chloride 75-01-4 SM 6200B-2011 ND 1ug/L0.400.50
m+p - Xylenes 179601-23-1 SM 6200B-2011 ND 1ug/L0.400.50
o - Xylenes 95-47-6 SM 6200B-2011 ND 1ug/L0.400.50
AcceptanceRun 1
Surrogate Q % Recovery Limits
1,2-Dichloroethane-d4 97 70-130
Bromofluorobenzene 94 70-130
Toluene-d8 97 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.pacelabs.com
Pace Analytical Services, LLC (formerly 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.
FB-01
VK07040-002
11/05/2020 1220
11/06/2020
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 11/11/2020 1040 TML 73075
AnalyticalCAS
Parameter Number Method Result Q LOQ Units Run DL
Benzene 71-43-2 SM 6200B-2011 ND 1ug/L0.400.50
Bromobenzene 108-86-1 SM 6200B-2011 ND 1ug/L0.400.50
Bromochloromethane 74-97-5 SM 6200B-2011 ND 1ug/L0.400.50
Bromodichloromethane 75-27-4 SM 6200B-2011 ND 1ug/L0.400.50
Bromoform 75-25-2 SM 6200B-2011 ND 1ug/L0.400.50
Bromomethane (Methyl bromide)74-83-9 SM 6200B-2011 ND 1ug/L0.400.50
n-Butylbenzene 104-51-8 SM 6200B-2011 ND 1ug/L0.400.50
sec-Butylbenzene 135-98-8 SM 6200B-2011 ND 1ug/L0.400.50
tert-Butylbenzene 98-06-6 SM 6200B-2011 ND 1ug/L0.400.50
Carbon tetrachloride 56-23-5 SM 6200B-2011 ND 1ug/L0.400.50
Chlorobenzene 108-90-7 SM 6200B-2011 ND 1ug/L0.400.50
Chloroethane 75-00-3 SM 6200B-2011 ND 1ug/L0.400.50
Chloroform 67-66-3 SM 6200B-2011 ND 1ug/L0.400.50
Chloromethane (Methyl chloride)74-87-3 SM 6200B-2011 ND 1ug/L0.400.50
2-Chlorotoluene 95-49-8 SM 6200B-2011 ND 1ug/L0.400.50
4-Chlorotoluene 106-43-4 SM 6200B-2011 ND 1ug/L0.400.50
Dibromochloromethane 124-48-1 SM 6200B-2011 ND 1ug/L0.400.50
1,2-Dibromoethane (EDB)106-93-4 SM 6200B-2011 ND 1ug/L0.400.50
Dibromomethane (Methylene bromide)74-95-3 SM 6200B-2011 ND 1ug/L0.400.50
1,2-Dichlorobenzene 95-50-1 SM 6200B-2011 ND 1ug/L0.400.50
1,3-Dichlorobenzene 541-73-1 SM 6200B-2011 ND 1ug/L0.400.50
1,4-Dichlorobenzene 106-46-7 SM 6200B-2011 ND 1ug/L0.400.50
Dichlorodifluoromethane 75-71-8 SM 6200B-2011 ND 1ug/L0.400.50
1,1-Dichloroethane 75-34-3 SM 6200B-2011 ND 1ug/L0.400.50
1,2-Dichloroethane 107-06-2 SM 6200B-2011 ND 1ug/L0.400.50
1,1-Dichloroethene 75-35-4 SM 6200B-2011 ND 1ug/L0.400.50
cis-1,2-Dichloroethene 156-59-2 SM 6200B-2011 ND 1ug/L0.400.50
trans-1,2-Dichloroethene 156-60-5 SM 6200B-2011 ND 1ug/L0.400.50
1,2-Dichloropropane 78-87-5 SM 6200B-2011 ND 1ug/L0.400.50
1,3-Dichloropropane 142-28-9 SM 6200B-2011 ND 1ug/L0.400.50
2,2-Dichloropropane 594-20-7 SM 6200B-2011 ND 1ug/L0.400.50
1,1-Dichloropropene 563-58-6 SM 6200B-2011 ND 1ug/L0.400.50
cis-1,3-Dichloropropene 10061-01-5 SM 6200B-2011 ND 1ug/L0.400.50
trans-1,3-Dichloropropene 10061-02-6 SM 6200B-2011 ND 1ug/L0.400.50
Diisopropyl ether (IPE)108-20-3 SM 6200B-2011 ND 1ug/L0.400.50
Ethylbenzene 100-41-4 SM 6200B-2011 ND 1ug/L0.400.50
Hexachlorobutadiene 87-68-3 SM 6200B-2011 ND 1ug/L0.400.50
Isopropylbenzene (Cumene)98-82-8 SM 6200B-2011 ND 1ug/L0.400.50
p-Isopropyltoluene (p-Cymene)99-87-6 SM 6200B-2011 ND 1ug/L0.400.50
Methyl tertiary butyl ether (MTBE)1634-04-4 SM 6200B-2011 ND 1ug/L0.400.50
Methylene chloride 75-09-2 SM 6200B-2011 ND 1ug/L0.400.50
Naphthalene 91-20-3 SM 6200B-2011 ND 1ug/L0.400.50
n-Propylbenzene 103-65-1 SM 6200B-2011 ND 1ug/L0.400.50
Styrene 100-42-5 SM 6200B-2011 ND 1ug/L0.400.50
J = Estimated result < LOQ and > DL_
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range
P = The RPD between two GC columns exceeds 40%ND = Not detected at or above the DL N = Recovery is out of criteria
H = Out of holding time
DL = Detection Limit
W = Reported on wet weight basis
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Page 7 of 16
Volatile Organic Compounds by GC/MS
Description:Matrix:
Date Received:
Client:Laboratory ID:
Date Sampled:
Terracon Consultants, Inc.
FB-01
VK07040-002
11/05/2020 1220
11/06/2020
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 11/11/2020 1040 TML 73075
AnalyticalCAS
Parameter Number Method Result Q LOQ Units Run DL
1,1,1,2-Tetrachloroethane 630-20-6 SM 6200B-2011 ND 1ug/L0.400.50
1,1,2,2-Tetrachloroethane 79-34-5 SM 6200B-2011 ND 1ug/L0.400.50
Tetrachloroethene 127-18-4 SM 6200B-2011 ND 1ug/L0.400.50
Toluene 108-88-3 SM 6200B-2011 ND 1ug/L0.400.50
1,1,2-Trichloro-1,2,2-Trifluoroethane 76-13-1 SM 6200B-2011 ND 1ug/L0.400.50
1,2,3-Trichlorobenzene 87-61-6 SM 6200B-2011 ND 1ug/L0.400.50
1,2,4-Trichlorobenzene 120-82-1 SM 6200B-2011 ND 1ug/L0.400.50
1,1,1-Trichloroethane 71-55-6 SM 6200B-2011 ND 1ug/L0.400.50
1,1,2-Trichloroethane 79-00-5 SM 6200B-2011 ND 1ug/L0.400.50
Trichloroethene 79-01-6 SM 6200B-2011 ND 1ug/L0.400.50
Trichlorofluoromethane 75-69-4 SM 6200B-2011 ND 1ug/L0.400.50
1,2,3-Trichloropropane 96-18-4 SM 6200B-2011 ND 1ug/L0.400.50
1,3,5-Trimethylbenzene (Mesitylene)108-67-8 SM 6200B-2011 ND 1ug/L0.400.50
1,2,4-Trimethylbenzene 95-63-6 SM 6200B-2011 ND 1ug/L0.400.50
Vinyl chloride 75-01-4 SM 6200B-2011 ND 1ug/L0.400.50
m+p - Xylenes 179601-23-1 SM 6200B-2011 ND 1ug/L0.400.50
o - Xylenes 95-47-6 SM 6200B-2011 ND 1ug/L0.400.50
AcceptanceRun 1
Surrogate Q % Recovery Limits
1,2-Dichloroethane-d4 97 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.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Page 8 of 16
QC Summary
QC Data for Lot Number: VK07040
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Page 9 of 16
Volatile Organic Compounds by GC/MS - MB
Batch:Prep Method:
Sample ID:VQ73075-001
73075 SM 6200B-2011
Analytical Method:SM 6200B-2011
Matrix:Aqueous
Parameter Result Q LOQ DL Units Analysis DateDil
Benzene ND 11/11/2020 09380.50 0.40 ug/L1
Bromobenzene ND 11/11/2020 09380.50 0.40 ug/L1
Bromochloromethane ND 11/11/2020 09380.50 0.40 ug/L1
Bromodichloromethane ND 11/11/2020 09380.50 0.40 ug/L1
Bromoform ND 11/11/2020 09380.50 0.40 ug/L1
Bromomethane (Methyl bromide)ND 11/11/2020 09380.50 0.40 ug/L1
n-Butylbenzene ND 11/11/2020 09380.50 0.40 ug/L1
sec-Butylbenzene ND 11/11/2020 09380.50 0.40 ug/L1
tert-Butylbenzene ND 11/11/2020 09380.50 0.40 ug/L1
Carbon tetrachloride ND 11/11/2020 09380.50 0.40 ug/L1
Chlorobenzene ND 11/11/2020 09380.50 0.40 ug/L1
Chloroethane ND 11/11/2020 09380.50 0.40 ug/L1
Chloroform ND 11/11/2020 09380.50 0.40 ug/L1
Chloromethane (Methyl chloride)ND 11/11/2020 09380.50 0.40 ug/L1
2-Chlorotoluene ND 11/11/2020 09380.50 0.40 ug/L1
4-Chlorotoluene ND 11/11/2020 09380.50 0.40 ug/L1
Dibromochloromethane ND 11/11/2020 09380.50 0.40 ug/L1
1,2-Dibromoethane (EDB)ND 11/11/2020 09380.50 0.40 ug/L1
Dibromomethane (Methylene bromide)ND 11/11/2020 09380.50 0.40 ug/L1
1,2-Dichlorobenzene ND 11/11/2020 09380.50 0.40 ug/L1
1,3-Dichlorobenzene ND 11/11/2020 09380.50 0.40 ug/L1
1,4-Dichlorobenzene ND 11/11/2020 09380.50 0.40 ug/L1
Dichlorodifluoromethane ND 11/11/2020 09380.50 0.40 ug/L1
1,1-Dichloroethane ND 11/11/2020 09380.50 0.40 ug/L1
1,2-Dichloroethane ND 11/11/2020 09380.50 0.40 ug/L1
1,1-Dichloroethene ND 11/11/2020 09380.50 0.40 ug/L1
cis-1,2-Dichloroethene ND 11/11/2020 09380.50 0.40 ug/L1
trans-1,2-Dichloroethene ND 11/11/2020 09380.50 0.40 ug/L1
1,2-Dichloropropane ND 11/11/2020 09380.50 0.40 ug/L1
1,3-Dichloropropane ND 11/11/2020 09380.50 0.40 ug/L1
2,2-Dichloropropane ND 11/11/2020 09380.50 0.40 ug/L1
1,1-Dichloropropene ND 11/11/2020 09380.50 0.40 ug/L1
cis-1,3-Dichloropropene ND 11/11/2020 09380.50 0.40 ug/L1
trans-1,3-Dichloropropene ND 11/11/2020 09380.50 0.40 ug/L1
Diisopropyl ether (IPE)ND 11/11/2020 09380.50 0.40 ug/L1
Ethylbenzene ND 11/11/2020 09380.50 0.40 ug/L1
Hexachlorobutadiene ND 11/11/2020 09380.50 0.40 ug/L1
Isopropylbenzene (Cumene)ND 11/11/2020 09380.50 0.40 ug/L1
p-Isopropyltoluene (p-Cymene)ND 11/11/2020 09380.50 0.40 ug/L1
Methyl tertiary butyl ether (MTBE)ND 11/11/2020 09380.50 0.40 ug/L1
Methylene chloride ND 11/11/2020 09380.50 0.40 ug/L1
Naphthalene ND 11/11/2020 09380.50 0.40 ug/L1
n-Propylbenzene ND 11/11/2020 09380.50 0.40 ug/L1
Styrene ND 11/11/2020 09380.50 0.40 ug/L1
Note:Calculations are performed before rounding to avoid round-off errors in calculated results
LOQ = Limit of Quantitation ND = Not detected at or above the DL
J = Estimated result < LOQ and > DL
N = Recovery is out of criteria
P = The RPD between two GC columns exceeds 40%
+ = RPD is out of criteria
_DL = Detection Limit
* = RSD is out of criteria
QC Data for Lot Number: VK07040
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Page 10 of 16
Volatile Organic Compounds by GC/MS - MB
Batch:Prep Method:
Sample ID:VQ73075-001
73075 SM 6200B-2011
Analytical Method:SM 6200B-2011
Matrix:Aqueous
Parameter Result Q LOQ DL Units Analysis DateDil
1,1,1,2-Tetrachloroethane ND 11/11/2020 09380.50 0.40 ug/L1
1,1,2,2-Tetrachloroethane ND 11/11/2020 09380.50 0.40 ug/L1
Tetrachloroethene ND 11/11/2020 09380.50 0.40 ug/L1
Toluene ND 11/11/2020 09380.50 0.40 ug/L1
1,1,2-Trichloro-1,2,2-Trifluoroethane ND 11/11/2020 09380.50 0.40 ug/L1
1,2,3-Trichlorobenzene ND 11/11/2020 09380.50 0.40 ug/L1
1,2,4-Trichlorobenzene ND 11/11/2020 09380.50 0.40 ug/L1
1,1,1-Trichloroethane ND 11/11/2020 09380.50 0.40 ug/L1
1,1,2-Trichloroethane ND 11/11/2020 09380.50 0.40 ug/L1
Trichloroethene ND 11/11/2020 09380.50 0.40 ug/L1
Trichlorofluoromethane ND 11/11/2020 09380.50 0.40 ug/L1
1,2,3-Trichloropropane ND 11/11/2020 09380.50 0.40 ug/L1
1,3,5-Trimethylbenzene (Mesitylene)ND 11/11/2020 09380.50 0.40 ug/L1
1,2,4-Trimethylbenzene ND 11/11/2020 09380.50 0.40 ug/L1
Vinyl chloride ND 11/11/2020 09380.50 0.40 ug/L1
m+p - Xylenes ND 11/11/2020 09380.50 0.40 ug/L1
o - Xylenes ND 11/11/2020 09380.50 0.40 ug/L1
Surrogate Q % Rec Acceptance
Limit
1,2-Dichloroethane-d4 104 70-130
Bromofluorobenzene 101 70-130
Toluene-d8 99 70-130
Note:Calculations are performed before rounding to avoid round-off errors in calculated results
LOQ = Limit of Quantitation ND = Not detected at or above the DL
J = Estimated result < LOQ and > DL
N = Recovery is out of criteria
P = The RPD between two GC columns exceeds 40%
+ = RPD is out of criteria
_DL = Detection Limit
* = RSD is out of criteria
QC Data for Lot Number: VK07040
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Page 11 of 16
Volatile Organic Compounds by GC/MS - LCS
Batch:Prep Method:
Sample ID:VQ73075-002
73075 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 11/11/2020 08011025070-1301
Bromobenzene 48 11/11/2020 0801965070-1301
Bromochloromethane 52 11/11/2020 08011035070-1301
Bromodichloromethane 51 11/11/2020 08011025070-1301
Bromoform 50 11/11/2020 08011015070-1301
Bromomethane (Methyl bromide)51 11/11/2020 08011025060-1401
n-Butylbenzene 54 11/11/2020 08011095070-1301
sec-Butylbenzene 53 11/11/2020 08011055070-1301
tert-Butylbenzene 51 11/11/2020 08011035070-1301
Carbon tetrachloride 51 11/11/2020 08011025070-1301
Chlorobenzene 49 11/11/2020 0801975070-1301
Chloroethane 52 11/11/2020 08011055042-1631
Chloroform 51 11/11/2020 08011035070-1301
Chloromethane (Methyl chloride)53 11/11/2020 08011065020-1581
2-Chlorotoluene 50 11/11/2020 08011005070-1301
4-Chlorotoluene 48 11/11/2020 0801975070-1301
Dibromochloromethane 52 11/11/2020 08011035070-1301
1,2-Dibromoethane (EDB)49 11/11/2020 0801985070-1301
Dibromomethane (Methylene bromide)50 11/11/2020 08011005070-1301
1,2-Dichlorobenzene 50 11/11/2020 08011005070-1301
1,3-Dichlorobenzene 49 11/11/2020 0801985070-1301
1,4-Dichlorobenzene 48 11/11/2020 0801965070-1301
Dichlorodifluoromethane 52 11/11/2020 08011055060-1401
1,1-Dichloroethane 52 11/11/2020 08011045070-1301
1,2-Dichloroethane 50 11/11/2020 08011005070-1301
1,1-Dichloroethene 53 11/11/2020 08011055070-1301
cis-1,2-Dichloroethene 52 11/11/2020 08011055070-1301
trans-1,2-Dichloroethene 53 11/11/2020 08011055070-1301
1,2-Dichloropropane 50 11/11/2020 08011005070-1301
1,3-Dichloropropane 49 11/11/2020 0801975070-1301
2,2-Dichloropropane 57 11/11/2020 08011145070-1301
1,1-Dichloropropene 51 11/11/2020 08011035070-1301
cis-1,3-Dichloropropene 51 11/11/2020 08011035070-1301
trans-1,3-Dichloropropene 51 11/11/2020 08011025070-1301
Diisopropyl ether (IPE)51 11/11/2020 08011035070-1301
Ethylbenzene 50 11/11/2020 08011005070-1301
Hexachlorobutadiene 55 11/11/2020 08011095070-1301
Isopropylbenzene (Cumene)52 11/11/2020 08011035070-1301
p-Isopropyltoluene (p-Cymene)54 11/11/2020 08011075070-1301
Methyl tertiary butyl ether (MTBE)50 11/11/2020 08011005070-1301
Methylene chloride 52 11/11/2020 08011035070-1301
Naphthalene 54 11/11/2020 08011085050-1401
n-Propylbenzene 51 11/11/2020 08011035070-1301
Styrene 51 11/11/2020 08011025070-1301
Note:Calculations are performed before rounding to avoid round-off errors in calculated results
LOQ = Limit of Quantitation ND = Not detected at or above the DL
J = Estimated result < LOQ and > DL
N = Recovery is out of criteria
P = The RPD between two GC columns exceeds 40%
+ = RPD is out of criteria
_DL = Detection Limit
* = RSD is out of criteria
QC Data for Lot Number: VK07040
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Page 12 of 16
Volatile Organic Compounds by GC/MS - LCS
Batch:Prep Method:
Sample ID:VQ73075-002
73075 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 11/11/2020 08011025070-1301
1,1,2,2-Tetrachloroethane 49 11/11/2020 0801995070-1301
Tetrachloroethene 50 11/11/2020 08011005070-1301
Toluene 50 11/11/2020 08011005070-1301
1,1,2-Trichloro-1,2,2-Trifluoroethane 52 11/11/2020 08011045070-1301
1,2,3-Trichlorobenzene 51 11/11/2020 08011025070-1301
1,2,4-Trichlorobenzene 51 11/11/2020 08011035070-1301
1,1,1-Trichloroethane 52 11/11/2020 08011035070-1301
1,1,2-Trichloroethane 48 11/11/2020 0801955070-1301
Trichloroethene 51 11/11/2020 08011025070-1301
Trichlorofluoromethane 54 11/11/2020 08011075060-1401
1,2,3-Trichloropropane 48 11/11/2020 0801955070-1301
1,3,5-Trimethylbenzene (Mesitylene)53 11/11/2020 08011065070-1301
1,2,4-Trimethylbenzene 52 11/11/2020 08011045070-1301
Vinyl chloride 53 11/11/2020 08011065060-1401
m+p - Xylenes 50 11/11/2020 08011005070-1301
o - Xylenes 51 11/11/2020 08011015070-1301
Surrogate Q % Rec Acceptance
Limit
1,2-Dichloroethane-d4 96 70-130
Bromofluorobenzene 93 70-130
Toluene-d8 95 70-130
Note:Calculations are performed before rounding to avoid round-off errors in calculated results
LOQ = Limit of Quantitation ND = Not detected at or above the DL
J = Estimated result < LOQ and > DL
N = Recovery is out of criteria
P = The RPD between two GC columns exceeds 40%
+ = RPD is out of criteria
_DL = Detection Limit
* = RSD is out of criteria
QC Data for Lot Number: VK07040
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Page 13 of 16
Chain of Custody
and
Miscellaneous Documents
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Page 14 of 16
PACE ANALYTICAL SERVICES, LLC

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

Page 16 of 16

APPENDIX B
PHOTO LOG AND FIELD NOTES

WSW-8 Sampling
Wilsonville General Store (Incident #3534) ■ Wilsonville, North Carolina
Photos Taken: November 5, 2020 ■ Terracon Project No. 70149669B

Photo #1 View of well house.

Photo #2 View of WSW-8 well head.
WSW-8 Sampling
Wilsonville General Store (Incident #3534) ■ Wilsonville, North Carolina
Photos Taken: November 5, 2020 ■ Terracon Project No. 70149669B

Photo #3 View of WSW-8 sampling point.

Photo #4 View of WSW-3 well head and piping routing
WSW-3 water to the residence and WSW-8 to the irrigation
system.

WSW-8 Sampling
Wilsonville General Store (Incident #3534) ■ Wilsonville, North Carolina
Photos Taken: November 5, 2020 ■ Terracon Project No. 70149669B

Photo #5 View of labeled piping in WSW-3 well house. The
500’ well is WSW-8.

Photo #6 View of piping in well house. Larger diameter
piping is WSW-8 and routes to the irrigation system. The
smaller diameter piping routes to the residence.