FA-1286_24238_CA_MRP_20210924

Terracon Consultants, Inc. 2401 Brentwood Road, Suite 107 Raleigh, NC 27604
P [919] 873 2211 F [919] 873 9555 terracon.com
September 24, 2021
Mr. Mark Petermann
North Carolina Department Environmental Quality
Division of Waste Management
1646 Mail Service Center
Raleigh, North Carolina 27699-1646
Email:[e-mail]
Re: Annual Monitoring Report
Blalock Fina
3574 NC Highway 55
Angier, Harnett County, North Carolina
UST Incident Number: 24238
UST Number: FA-1286
Terracon Project No. 70149672B
Dear Mr. Petermann:
Terracon Consultants, Inc. is pleased to submit this Annual Monitoring Report for the above
referenced property. This report has been prepared in general accordance with North Carolina
Department Environmental Quality, Underground Storage Tank (UST) Section Assessment
Guidelines and Corrective Action Guidelines for Petroleum and Hazardous Substance UST Releases
/ Petroleum Non-UST Releases,dated January 19, 2021, and Task Authorization No. 02 approved
on June 7, 2021.
If you have any questions regarding this report or the assessment activities, please contact us at
919-873-2211.
Sincerely,
Terracon Consultants, Inc.
Ethan C. Dinwiddie, GIT Justin F. Fabriziani, RSM
Staff Geologist Environmental Department Manager
Donald R. Malone, PE, RSM
Senior Environmental Engineer
Enclosures
ANNUAL MONITORING REPORT
Blalock Fina (Incident #24238)
3574 NC Highway 55
Angier, Harnett County, North Carolina
September 24, 2021
Terracon Project No. 70149672B
Prepared for:
North Carolina Department Environmental Quality
Division of Waste Management
Raleigh, North Carolina
Prepared by:
Terracon Consultants, Inc.
Raleigh, North Carolina
Responsive ■Resourceful ■Reliable i
Table of Contents
A.SITE INFORMATION ...........................................................................................................1
B.EXECUTIVE SUMMARY ......................................................................................................2
C.SITE HISTORY AND CHARACTERIZATION ........................................................................4
C.1 Site Setting .....................................................................................................................4
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 Groundwater Analytical Results ....................................................................................6
D.4 Soil Oxidant Demand Testing ........................................................................................7
D.5 RemRx™ Controlled Release Polymer Persulfate Application .....................................7
E.CONCLUSIONS AND RECOMMENDATIONS ..................................................................8
F.REFERENCES .....................................................................................................................9
FIGURES
Figure 1: Site Location Map
Figure 2: Site Plan
Figure 3: Water Supply Well Location Map
Figure 4: Groundwater Elevation Map (July 2021)
Figure 5: Groundwater Analytical Results (July and August 2021)
Figure 6: Benzene Isoconcentration Map (July and August 2021)
Figure 7: Ethylbenzene Isoconcentration Map (July and August 2021)
Figure 8: Naphthalene Isoconcentration Map (July and August 2021)
Figure 9: Toluene Isoconcentration Map (July and August 2021)
Figure 10: Total Xylenes Isoconcentration Map (July and August 2021)
Figure 11: CRP Persulfate Application Boring Location Map
TABLES
Table 1: Conceptual Site Model
Table 2: Water Supply Well Information
Table 3: Monitoring Well Construction Information and Historical Groundwater Elevations
Table 4: Summary of Groundwater Analytical Results
APPENDICES
Appendix A: Photographs and Field Notes
Appendix B: Laboratory Analytical Results and Chain-of-Custody Forms
Appendix C: SOD Testing Report
Blalock Fina
Angier, North Carolina
Terracon Project No. 70149672B
Incident No. 24238
September 24, 2021
Responsive ■Resourceful ■Reliable 1
ANNUAL MONITORING REPORT
A. SITE INFORMATION
Date of Report:September 24, 2021
NCDEQ Incident No:24238
UST No.FA-1286
Facility ID:Unknown/Not Applicable
Site Name:Blalock Fina
Site Location:3574 NC Highway 55
Angier, North Carolina 27501
Latitude:N 35.460095
Longitude:W 78.694913
UST Owner/Operator:N/A - NCDEQ
Current Property Owner: Mr. Scott Leonard
249 Foxwalk Path
Garner, NC 27529
[phone]
Current Property
Occupant: Currently vacant
Consultant:Terracon Consultants, Inc. (Contact: Justin L. Fabriziani)
2401 Brentwood Road, Suite 107
Raleigh, North Carolina 27604
919-873-2211
Laboratory:Pace Analytical Services, LLC (NCDEQ No. 329)
106 Vantage Point Drive
West Columbia, South Carolina 29712
803-227-2704
Release Information:Release Discovery Date: February 2001
Estimated Quantity: Unknown
Cause of Release: Underground Storage Tank System
Currently Active Tanks: None
Blalock Fina
Angier, North Carolina
Terracon Project No. 70149672B
Incident No. 24238
September 24, 2021
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I, Donald R. Malone, a Licensed Engineer for Terracon Consultants, Inc. (Terracon), do certify that
the information contained in this report is correct and accurate to the best of my knowledge.
Donald R. Malone, P.E.
North Carolina Professional Engineering License No. 20195
Terracon is licensed to practice geology and engineering in North Carolina. The certification numbers
of the corporation are C-367 and F-0869, respectively.
B. EXECUTIVE SUMMARY
The Blalock Fina site, located at 3574 NC Highway 55 in Angier, North Carolina (site), is 0.69 acres
(Figure 1). The property is vacant and consists of cleared land. The site formerly contained a
gasoline station and convenience store, which began operation in 1957. The gas station was
reportedly closed in 1989 and the underground storage tanks (USTs) were reportedly pumped dry
and filled with a sand/cement/water slurry. A release from the former on-site UST system was
discovered in February 2001, when laboratory analysis of soil samples collected following the
removal of the USTs revealed the presence of petroleum contaminants. Subsequent environmental
investigations at the site are summarized in the following sections.
The North Carolina Department of Environmental Quality (NCDEQ) filed a Notice of Residual
Petroleum (NRP) for soil and groundwater on December 9, 2016 prior to the sale of the property
between Mr. Blalock and the current property owner (Mr. Scott Leonard). The NRP was filed with the
Harnett County deed in Book 3462, Page 818-820.
As requested by NCDEQ, Terracon mobilized to the site between July 14, 2021 and August 25, 2021
to conduct the following activities:
n Sample fourteen monitoring wells (MW-1, MW-3 through MW-9, MW-11, MW-12, RW-1, RW-2,
VEW-1, and VEW-2) for analysis of volatile organic compounds (VOCs);
n Complete soil samples from three on-site soil borings up to 10 feet below land surface (bls) for
analysis of the soil oxidant demand (SOD); and
n Apply approximately 1,800 pounds of RemRx™ Controlled Release Polymer (CRP) Persulfate
and 900 pounds of instantaneous release persulfate in 18 soil borings up to 18 feet bls to
chemically enhance degradation of petroleum contaminants in groundwater.
Based on information obtained during the completion of groundwater monitoring activities, Terracon
provides the following findings and conclusions.
Blalock Fina
Angier, North Carolina
Terracon Project No. 70149672B
Incident No. 24238
September 24, 2021
Responsive ■Resourceful ■Reliable 3
n Free product was not measured in the monitoring wells. Free product thicknesses have not been
measured in the monitoring wells since May 2012 (MW-5).
n Benzene; ethylbenzene; isopropylbenzene; naphthalene; n-propylbenzene; toluene;
1,3,5-trimethylbenzene; 1,2,4-trimethylbenzene; and/or total xylenes were detected at concentrations
above the 15A North Carolina Administrative Code (NCAC) 2L Groundwater Quality Standards (2L
standards) in wells MW-1, MW-3, MW-5, MW-6, RW-1, RW-2, and VEW-1.
n Petroleum constituents were not detected above the North Carolina Gross Contaminant Levels
(GCLs) during this sampling event. Benzene has historically been detected above the GCL in MW-3 in
January 2012 and in MW-5 in January 2018.
n VOCs were detected above the laboratory reporting limits, but below the 2L standards in MW-7, MW-
8, and VEW-2.
n VOCs were not detected above the laboratory reporting limits in MW-4, MW-9, MW-10, MW-11, and
MW-12.
n Shallow groundwater depths in July and August 2021 ranged from 3.10 to 9.98 feet below top of
casing (bTOC). The apparent direction of surficial groundwater flow was to the southwest.
n Groundwater impacts extend off the site to the southwest. The groundwater contaminant plume
appears to be relatively stable and is generally delineated horizontally with the exception of the
southeastern extent. The contaminant plume is not vertically delineated.
n Following groundwater sampling activities, RemRx™ CRP Persulfate and instantaneous release
persulfate was applied in 18 borings with total depths between 15 and 18 feet bls. Approximately 100
pounds of CRP Persulfate and 50 pounds of instantaneous release persulfate was added to each
boring from the bottom of the boring to approximately 5 to 8 feet bls. The instantaneous release
persulfate was then activated with a slurry of 8 pounds chelated iron ethylenediaminetetraacetic acid
(EDTA) and approximately 2 gallons of potable water. The borings were capped with bentonite pellets
and then grouted to land surface.
n Seven potable water supply wells have historically been identified within 1,000 feet of the source area.
These wells are located to the north, east, and south of the site and are topographically cross- to up-
gradient in relation to the plume. Active potable wells have not been identified within 500 feet of the
source area. Municipal water is reportedly available to the site and properties located within 1,000 feet
of the source area.
n Based on conversations with the current property owner and possible future property owner, Terracon
understands the planned future use of the site is as a residential property. According to the Interstate
Technology and Regulatory Council (ITRC) Petroleum Vapor Intrusion (PVI) guidance, 1,2-
dibromoethane (EDB) and 1,2-DCA (historically identified on the site) are precluding factors for
petroleum vapor intrusion assessments. Due to the proposed future use of the site, additional
evaluation of the PVI pathway may be warranted based on the location of the residence and utility
lines on the site. To further evaluate the PVI pathway, Terracon compared groundwater
concentrations to the NCDEQ Division of Waste Management (DWM) Groundwater Vapor Intrusion
Blalock Fina
Angier, North Carolina
Terracon Project No. 70149672B
Incident No. 24238
September 24, 2021
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Screening Levels (GW-VISLs). Several petroleum constituents detected in on-site monitoring wells
exceeded the GW-VISLs.
C. SITE HISTORY AND CHARACTERIZATION
The purpose of this report is to present the findings of assessment and remediation activities
performed in July and August 2021 at the Blalock Fina site located at 3574 NC Highway 55 in Angier,
Harnett County, North Carolina. This Annual Monitoring Report was prepared for the site in response
to a request by Mr. Mark Petermann with the NCDEQ DWM, State Lead Program. The Annual
Monitoring Report was prepared in general accordance with the 15A NCAC 2L .0115 regulations and
the NCDEQ UST Section Assessment Guidelines and Corrective Action Guidelines for Petroleum
and Hazardous Substance UST Releases / Petroleum Non-UST Releases,dated January 19, 2021,
under the supervision of Mr. Donald R. Malone, a North Carolina registered professional engineer
(North Carolina Professional Engineering License No. 20195).
C.1 Site Setting
The Blalock Fina site is comprised of 0.69 acres and consists of vacant, predominantly cleared land.
The surrounding properties consist of residential properties to the west, south, and east with
agricultural land to the north. The site and surrounding properties are depicted on Figures 2 and 3.
C.2 Release Summary
A petroleum release was discovered in February 2001, when laboratory analysis of soil samples
collected following the removal of the former on-site USTs revealed the presence of petroleum
contaminants (Armstrong Geological & Engineering Services, P.C., 2001). The site reportedly
operated as a gasoline station and convenience store beginning in 1957. The site operated two
1,000-gallon gasoline USTs with a third 550-gallon gasoline UST added to the site in 1958.
Approximately 1,224 tons of contaminated soil was excavated during the UST removal activities in
February 2001. A chronological summary of UST removal and subsequent assessment activities at
the site is discussed in the following section of the report.
C.3 Previous Investigations
Investigation activities conducted between 2002 and the present included installation of twelve
monitoring wells, two recovery wells, two vapor extraction wells, water supply well sampling, and a
mobile multi-phase extraction (MMPE) event in 2004. An injection event was conducted in July 2011
that utilized chemical oxidation and oxygen-releasing compounds. The injectate consisted of a
solution of 18% persulfate and 2% PermOx Plus into two separate areas at the site including the
former source area on the north side of NC Highway 55 and a down-gradient area south of NC
Highway 55 (Figure 2). During the injection, vacuum extraction was applied to extraction wells and
monitoring wells to remove contaminant mass, prevent groundwater mounding, and provide
hydraulic control (Force Environmental Service Company, LLC, 2011).
Blalock Fina
Angier, North Carolina
Terracon Project No. 70149672B
Incident No. 24238
September 24, 2021
Responsive ■Resourceful ■Reliable 5
NCDEQ filed an NRP for soil and groundwater on December 9, 2016 prior to the sale of the property
between Mr. Blalock and a new property owner. The NRP is filed with the deed in Book 3462, Page
818-820.
From 2014 to the present, Terracon has conducted groundwater and soil investigations at the site to
monitor the concentrations and extents of petroleum contamination. Due to the lack of plume
delineation to the southeast of MW-3, Terracon installed monitoring well MW-12 in October 2019
(Terracon, 2019). The results of the injection and other investigation activities were used to generate
a conceptual site model of the current site conditions (Table 1).
C.4 Water Supply Wells
Terracon performed a receptor survey in October 2019 and identified thirteen water supply wells
within 1,000 feet of the source area. At that time, seven of the thirteen wells appeared to be within
1,000 feet of the source area and serve as active, potable water sources. These wells are generally
situated topographically cross- to up-gradient of the plume. The most proximate potable water supply
well is WSW-5, which is located approximately 625 feet east and cross-gradient of the source area.
Down-gradient water supply wells are reportedly either inactive or non-potable. Municipal water is
reportedly available to the site and surrounding properties located within 1,000 feet of the 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
Terracon mobilized to the site on July 14, 2021 to sample the existing fourteen monitoring wells
(MW-1, MW-3 through MW-9, MW-11, MW-12, RW-1, RW-2, VEW-1, and VEW-2) for analysis of
VOCs; however, monitoring wells MW-1, MW-4, and MW-10 were not located on this date. On July
21, 2021, Terracon completed three soil borings at the site to 10 feet bls in order to collect soil
samples used to calculate the soil oxidant demand (SOD). On August 4, 202, Terracon completed
sampling of MW-1, MW-4, and MW-10. Between August 23 and August 25, 2021, Terracon oversaw
drilling and application of RemRx™ CRP Persulfate in 18 soil borings between 15 and 18 feet bls.
D.1 Free Product Evaluation
Free product was not encountered in the monitoring wells during this assessment.
D.2 Groundwater Sampling Activities
Prior to sample collection, Terracon gauged the depth to groundwater in the monitoring wells.
Current and historical groundwater elevation measurements are provided in Table 3. Shallow
groundwater depths in July and August 2021 ranged from 3.10 to 9.98 feet below top of casing
(bTOC). The apparent direction of surficial groundwater flow direction was to the southwest based
on the calculated groundwater elevations. Groundwater elevations from the July 14, 2021 gauging
event are depicted on Figure 4. Copies of field notes and a photographic log are provided in
Appendix A.
Blalock Fina
Angier, North Carolina
Terracon Project No. 70149672B
Incident No. 24238
September 24, 2021
Responsive ■Resourceful ■Reliable 6
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 Pace
Analytical Services, LLC, in West Columbia, South Carolina for analysis of VOCs by United States
Environmental Protection Agency Method 6200B including methyl tert-butyl ether, EDB, and
di-isopropyl ether.
D.3 Groundwater Analytical Results
Based on the laboratory analytical reports, benzene; ethylbenzene; isopropylbenzene; naphthalene;
n-propylbenzene; toluene; 1,3,5 trimethylbenzene; 1,2,4-trimethylbenzene; and/or total xylenes were
detected at concentrations above the 2L standards in wells MW-1, MW-3, MW-5, MW-6, RW-1, RW-2,
and VEW-1. Petroleum constituents were not present at concentrations above GCLs. Benzene has
historically been detected above the GCL in MW-3 in January 2012 and in MW-5 in January 2018.
Petroleum constituents were not present at concentrations above the 2L standards in the remaining
samples. Groundwater analytical results are depicted on Figure 5 and summarized on Table 4.
Copies of the laboratory analytical reports are provided in Appendix B.Isoconcentration maps for
the five leading petroleum contaminants (benzene, ethylbenzene, naphthalene, toluene, and total
xylenes) are included on Figures 6, 7,8, 9, and 10, respectively. These maps show the contaminant
plumes generally originating from the south-central portion of the site in the source area and
migrating to the west-southwest underneath NC Highway 55 and onto the adjacent southwestern
property.
The groundwater contaminant plume appears to be relatively stable and is generally delineated
horizontally with the exception of the southeastern extent. The extent of groundwater impact is not
vertically delineated. Active potable wells are not located within 500 feet of the source area.
EDB and 1,2-DCA (lead scavenging compounds) were not detected during this event but have been
previously detected above the 2L standard on the site. The historical detections indicate that the fuel
type released at the site was gasoline containing lead scavengers. According to the ITRC PVI
guidance, this fuel type is a precluding factor; therefore, the ITRC screening process using screening
distances cannot be used. Due to the proposed future use of the site, additional evaluation of the
PVI pathway may be warranted based on the location of the residence and utility lines on the site.
To further evaluate the PVI pathway, Terracon compared groundwater concentrations to the NCDEQ
DWM GW-VISLs. Several petroleum constituents detected in on-site monitoring wells exceeded the
GW-VISLs.
Blalock Fina
Angier, North Carolina
Terracon Project No. 70149672B
Incident No. 24238
September 24, 2021
Responsive ■Resourceful ■Reliable 7
D.4 Soil Oxidant Demand Testing
On July 21, 2021, Terracon collected soil samples from three soil samples at approximate depths of
8 to 10 feet bls for analysis of the SOD. Analysis of the SOD was recommended by the remediation
contractor (RemRx™) to determine the quantity of CRP Persulfate and instantaneous release
persulfate required for more effective remediation. The results of the SOD testing ranged from 0.2
grams per kilogram (g/kg) to 3.4 g/kg, which were generally consistent with the 2 g/kg SOD estimate
utilized by RemRx™ to determine the required quantity of persulfate. The SOD testing report is
provided in Appendix C.
D.5 RemRx™ Controlled Release Polymer Persulfate Application
Prior to application activities, Terracon submitted an in-situ groundwater remediation injection Notice
of Intent (NOI) to the NCDEQ Underground Injection Control Wells (UIC) Program. In response to the
NOI, the UIC program issued permit number WI0600230 for the application. Between August 23 and
25, 2021, Terracon completed application of RemRx™ CRP Persulfate and instantaneous release
persulfate in 18 borings in the approximate on-site source area. The borings were arranged in two
off-set transects of 8 and 10 borings each (Figure 11).Total depths of the borings ranged between
15 and 18 feet bls and were advanced with 4.25-inch inside diameter hollow-stem augers.
Approximately 100 pounds of CRP Persulfate and 50 pounds of instantaneous release persulfate
were added to each boring during removal of the augers. Application depths of the persulfate
compound extended from approximately the bottom of the borings to within 5 to 8 feet bls. The
persulfate was then activated with a slurry of 8 pounds iron-EDTA chelate and approximately
2 gallons of potable water. RemRx™ personnel were on-site on August 23 and 24, 2021 to deliver
the persulfate compound, and to oversee the application and activation. The borings were capped
with bentonite pellets, and then grouted to the land surface in accordance with 15A NCAC 02C .0113
standards. Excess soil generated from the borings was spread on the site. Photographs of the
application activities are provided in Appendix A.
RemRx™ CRP Persulfate was utilized to establish in-situ chemical oxidation of the petroleum
hydrocarbons by providing a sustained delivery of oxidizing persulfate ions (S2O82–) and sulfate
radicals (SO4• –). The sustained release is designed to eliminate or greatly reduce the occurrence of
contaminant rebounding. Persulfate and the resulting sulfate radical anions degrade fuel-related
constituents using reduction/oxidation (REDOX) chemistry and do not rely on the presence of
naturally occurring or supplemental microbial bacteria. The iron-activation process generates excess
sulfate ions, which will promote in-situ anaerobic bio-oxidation reactions through the microbial-
mediated process of sulfate reduction. Sulfate ions are completely miscible in water and will migrate
downgradient with advective groundwater flow. Therefore, Terracon expects additional
decomposition of the petroleum compounds in groundwater downgradient of the injection areas via
the sulfate-reduction pathway. Although, benzene degrades primarily by the aerobic-degradation
process; and thus, continued in-situ degradation of benzene via the sulfate-reduction pathway is not
anticipated.
Blalock Fina
Angier, North Carolina
Terracon Project No. 70149672B
Incident No. 24238
September 24, 2021
Responsive ■Resourceful ■Reliable 8
E. CONCLUSIONS AND RECOMMENDATIONS
Terracon provides the following findings and conclusions based on the information obtained during
this and prior groundwater monitoring events:
n Free product was not measured in the monitoring wells. Free product thicknesses have not been
measured in the monitoring wells since May 2012 (MW-5).
n Benzene; ethylbenzene; isopropylbenzene; naphthalene; n-propylbenzene; toluene;
1,3,5-trimethylbenzene; 1,2,4-trimethylbenzene; and/or total xylenes were detected at concentrations
above the 2L standards in wells MW-1, MW-3, MW-5, MW-6, RW-1, RW-2, and VEW-1.
n Petroleum constituents were not detected above the GCLs during this sampling event. Benzene has
historically been detected above the GCL in MW-3 in January 2012 and in MW-5 in January 2018.
n VOCs were detected above the laboratory reporting limits, but below the 2L standards in MW-7,
MW-8, and VEW-2.
n VOCs were not detected above the laboratory reporting limits in MW-4, MW-9, MW-10, MW-11, and
MW-12.
n Shallow groundwater depths in July and August 2021 ranged from 3.10 to 9.98 feet bTOC. The
apparent direction of surficial groundwater flow is to the southwest.
n Groundwater impacts extend off the site to the southwest. The groundwater contaminant plume
appears to be relatively stable and is generally delineated horizontally with the exception of the
southeastern extent. The contaminant plume is not vertically delineated.
n RemRx™ CRP Persulfate and instantaneous release persulfate was applied in 18 borings with total
depths between 15 and 18 feet bls. Approximately 100 pounds of CRP Persulfate and 50 pounds of
instantaneous release persulfate was added to each boring from the bottom of the boring to
approximately 5 to 8 feet bls. The instantaneous release persulfate was then activated with a slurry of
8 pounds chelated iron EDTA and approximately 2 gallons of potable water. The borings were then
capped with bentonite pellets and grout to land surface.
n Seven potable water supply wells have historically been identified within 1,000 feet of the source area.
These wells are located to the north, east, and south of the site and are topographically cross- to up-
gradient in relation to the plume. Active potable wells have not been identified within 500 feet of the
source area. Municipal water is reportedly available to the site and properties located within 1,000 feet
of the source area.
n Based on conversations with the current property owner and possible future property owner, Terracon
understands the planned future use of the site is as a residential property. According to the ITRC PVI
guidance, EDB and 1,2-dichloroethane (DCA) (historically identified on the site) are precluding factors
for petroleum vapor intrusion assessments. Due to the proposed future use of the site, additional
evaluation of the PVI pathway may be warranted based on the location of the residence and utility
lines on the site. To further evaluate the PVI pathway, Terracon compared groundwater
Blalock Fina
Angier, North Carolina
Terracon Project No. 70149672B
Incident No. 24238
September 24, 2021
Responsive ■Resourceful ■Reliable 9
concentrations to the NCDEQ DWM Residential GW-VISLs. Several petroleum constituents detected
in on-site monitoring wells exceeded the GW-VISLs.
Based on the data presented in this Annual Monitoring Report, Terracon recommends the following
activities be completed at the site.
n Conduct semi-annual groundwater monitoring events to evaluate the effectiveness of the CRP
Persulfate in remediating petroleum contaminants in groundwater at the site. Groundwater samples
from the monitoring wells should be analyzed for VOCs and sulfate to evaluate the distribution and
release of the CRP Persulfate. Based on the semi-annual frequency, the next groundwater
monitoring event should take place in January 2021. In addition, quarterly measurements of
groundwater field parameters should be collected (e.g. pH, conductivity, and REDOX potential) to
evaluate the distribution and release of the CRP Persulfate.
n Consider performing a vapor intrusion evaluation consisting of at least two shallow soil vapor points.
This work would be considered once plans for the on-site residential structure have been finalized and
would be contingent upon the proposed location of the house as compared to the known extents of
groundwater impacts at the site.
F. REFERENCES
n Armstrong Geological & Engineering Services, P.C., 2001. Soil Assessment Report,
Blalock’s Fina, NC Highway 55 (Route 2) Angier, North Carolina. May 31.
n Force Environmental Service Company, LLC, 2011. Blalock’s Fina, 3574 Hwy 55, Angier, NC
Incident #24238. October 9.
n Progress Environmental, Inc., 2013. Subsequent Remediation Monitoring Report, Former
Blalock’s Fina, 3574 NC Highway 55, Angier, Harnett County, North Carolina. March.
n Schnabel Engineering, 2010. Revised Conceptual Corrective Action Plan, Blalock’s Fina,
NCDNER Incident #TF-24238, Angier, North Carolina. December.
n Terracon Consultants, Inc. (Terracon), 2014. Federal/State Lead Monitoring Report, Blalock
Fina, 3574 NC Highway 55, Angier, Harnett County, North Carolina. December.
n Terracon, 2015a. Federal/State Lead Monitoring Report, Blalock Fina, 3574 NC Highway 55,
Angier, Harnett County, North Carolina. April.
n Terracon, 2015b. New Technology Cleanup Report, Blalock Fina, 3574 NC Highway 55,
Angier, Harnett County, North Carolina. July.
n Terracon, 2016. Subsequent Monitoring Report, Blalock Fina, 3574 NC Highway 55, Angier,
Harnett County, North Carolina. April 28.
n Terracon, 2017a. Design Basis Memorandum, Blalock Fina, 3574 NC Highway 55, Angier,
Harnett County, North Carolina. February 20.
n Terracon, 2017b. Subsequent Monitoring Report, Blalock Fina, 3574 NC Highway 55, Angier,
Harnett County, North Carolina. August 7.
Blalock Fina
Angier, North Carolina
Terracon Project No. 70149672B
Incident No. 24238
September 24, 2021
Responsive ■Resourceful ■Reliable 10
n Terracon, 2018. Subsequent Monitoring Report, Blalock Fina, 3574 NC Highway 55, Angier,
Harnett County, North Carolina. August 11.
n Terracon, 2019. Subsequent Monitoring Report, Blalock Fina, 3574 NC Highway 55, Angier,
Harnett County, North Carolina. April 18.
n Terracon, 2020. Subsequent Monitoring Report, Blalock Fina, 3574 NC Highway 55, Angier,
Harnett County, North Carolina. June 4.
n Withers and Ravenel (W&R), 2002. Assessment Letter/Report, Blalock’s Fina, Highway 55
(Route 2), Angier, Harnett County, North Carolina. July.
n W&R, 2004. Additional Assessment /MMPE Report, Blalock’s Fina, Highway 55 (Route 2),
Angier, Harnett County, North Carolina. May.

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DRM September 2020 2401 Brentwood Road, Suite 107 Raleigh, NC 27604Phone: [phone] Fax: [phone]
Site Location Map
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MW-10
MW-1
MW-4
MW-5
RW-1 MW-3RW-2
MW-7
VEW-1
VEW-2MW-9
MW-11
MW-6
MW-8
BarryGregoryResidence
BeckwithResidence
NC Highway 55
Pond
@A
MW-12
N:\ENV_EH&S\Env\GIS\Projects\2014\70149672 - Blalock Fina State Lead\70149672A - TA-05\Figure 2 - 70149672 - Site Plan.mxdSite PlanProject No.
Reviewed By:
Date:
Drawn By:
70149672B
ECD
DRM
September 2020
2401 Brentwood Rd.Raleigh, NC 27604
PH. [phone] terracon.com N:\ENV_EH&S\Env\GIS\Projects\2014\70149672 - Blalock Fina State Lead\70149672A - TA-05\Figure 2 - 70149672 - Site Plan.mxdLegend
@A Monitoring Well
@?Vapor Extraction Well
Approximate Extent of Injections (2011)
Residence
Excavation Extent
Site Boundary
Parcel Boundary
Former Building
Data Sources:Well Locations - TerraconSite Boundary - Harnett County GIS
³Imagery - ESRI WMS
^_Blalock Fina(Incident # 24238)3574 NC Highway 55Angier, Harnett County, North Carolina
0 60 12030 Feet
Figure
2
ED
ED
ED
ED
ED
ED
ED
N:\ENV_EH&S\Env\GIS\Projects\2014\70149672 - Blalock Fina State Lead\70149672A - TA-05\Figure 3 - 70149672 - WSW Map.mxdWater Supply Well Location Map FigureProject No.
Reviewed By:
Date:
Drawn By:
2401 Brentwood Rd.Raleigh, NC 27604
PH. [phone] terracon.com
3 N:\ENV_EH&S\Env\GIS\Projects\2014\70149672 - Blalock Fina State Lead\70149672A - TA-05\Figure 3 - 70149672 - WSW Map.mxdLegend
ED Water Supply Well (Unknown Use)
ED Water Supply Well (Active/Potable)
ED Water Supply Well (Active/Non-potable)
ED Water Supply Well (Inactive)
Site BoundaryParcel BoundarySurface Water
Data Sources:Well Locations - TerraconSite Boundary - Harnett County GISImagery - ESRI WMS³
^_Blalock Fina(Incident # 24238)3574 NC Highway 55Angier, Harnett County, North Carolina
0 400 800200 Feet
1,000 ft
WSW-2 WSW-1
WSW-3
WSW-5
WSW-7
WSW-12
WSW-13
WSW-11
WSW-14
WSW-16
WSW-15
WSW-6
WSW-10
WSW-4
WSW-8
WSW-9
500 ft
1,500 ft
ED
WSW-18
ED
WSW-19
ED
WSW-20
EDWSW-21
WSW-22
EDWSW-23 ED
WSW-24 ED
WSW-25ED
WSW-26
ED
WSW-27 EDWSW-28
EDWSW-29
EDWSW-30
WSW-31
EDWSW-34
EDWSW-32
WSW-36
EDWSW-33
EDWSW-35
EDWSW-37EDWSW-38
ED
ED
ED
70149672B
ECD
DRM
September 2020
ED
ED
ED
ED
ED
ED
ED
ED
ED
WSW-17ED
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@? N:\ENV_EH&S\Env\GIS - ENV\Projects\2014\70149672 - Blalock Fina State Lead\70149672B - TA-01\Fig4_GW Elevation_70149672B_TA-01.mxdGroundwater Elevation Map(July 2021)FigureProject No.
Reviewed By:
Date:
Drawn By:
70149672B
ECD
DRM
September 2021 2401 Brentwood Rd.Raleigh, NC 27604
PH. [phone] terracon.com
4 N:\ENV_EH&S\Env\GIS - ENV\Projects\2014\70149672 - Blalock Fina State Lead\70149672B - TA-01\Fig4_GW Elevation_70149672B_TA-01.mxdLegend
@A Monitoring Well
@?Vapor Extraction WellGroundwater Elevation Contour
Excavation ExtentSite BoundaryParcel BoundaryFormer BuildingResidence
Notes:Arbitrary datum set at 100 ft on MW-1Data Sources:Well Locations - TerraconSite Boundary - Harnett County GISImagery - ESRI WMS³
^_Blalock Fina (Incident # 24238)3574 NC Highway 55Angier, Harnett County, North Carolina
0 40 8020 Feet
MW-10*95.12
MW-4*92.94
MW-591.70
MW-790.81
VEW-287.43
MW-987.05
MW-1184.56 MW-886.52
BarryGregoryResidence
BeckwithResidence
Grass
Grass
Cleared Land
NC Highway 55
88.00
Estimated Groundwater Flow Direction
Groundwater Elevation (ft)89.01
MW-1293.39
8
6
.
0
0 90.0092.00Notes:Depth to groundwater measured on July 14, 2021and August 4, 2021.Elevations based on an arbitary datum of 100.00feet set on MW-1.
* - Indicates elevation not used for contouring basedbecause depth was measured on August 4, 2021.
MW-687.26
VEW-188.61
RW-192.39 MW-391.26RW-292.14
MW-1*93.80
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@? N:\ENV_EH&S\Env\GIS - ENV\Projects\2014\70149672 - Blalock Fina State Lead\70149672B - TA-01\Fig5_GW Analytical_70149672B_TA-01.mxdGroundwater Analytical Results(July and August 2021)FigureProject No.
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Date:
Drawn By:
70149672B
ECD
DRM
September 2021 2401 Brentwood Rd.Raleigh, NC 27604
PH. [phone] terracon.com
5 N:\ENV_EH&S\Env\GIS - ENV\Projects\2014\70149672 - Blalock Fina State Lead\70149672B - TA-01\Fig5_GW Analytical_70149672B_TA-01.mxdLegend
@?Vapor Extraction Well
@A Monitoring WellResidence
Excavation ExtentSite BoundaryFormer Building
Data Sources:Well Locations - TerraconSite Boundary - Harnett County GISImagery - ESRI WMS³
^_Blalock Fina (Incident # 24238)3574 NC Highway 55Angier, Harnett County, North Carolina
0 50 10025 Feet
Notes:BRL: below laboratory reporting limitNS: not sampled, well not locatedConcentrations are in micrograms per liter (µg/L)Bolded concentrations exceed the 2L standards."J": estimated result below laboratory reporting limitand above the laboratory method detection limit."H": analyzed out of holding time.
BarryGregoryResidence
BeckwithResidence
NC Highway 55
MW-1Benzene - 10 Hn-Butylbenzene - 33 Hsec-Butylbenzene - 8.1 HEthylbenzene - 470Isopropylbenzene - 28 Hp-Isopropyltoluene - 6.0 HNaphthalene - 180 Hn-Propylbenzene - 100Toluene - 5001,3,5-Trimethylbenzene - 150 H1,2,4-Trimethylbenzene - 500 HXylenes (total) - 1,090 H
MW-3Benzene - 260Ethylbenzene - 2,200Isopropylbenzene - 74Napthalene - 580n-Propylbenzene - 220Toluene - 11,0001,3,5-Trimethylbenzene - 4601,2,4-Trimethylbenzene - 1,700Xylenes (total) - 9,900
MW-4BRL
MW-5Benzene - 89sec-Butylbenzene - 4.3 JEthylbenzene - 290Isopropylbenzene - 19Naphthalene - 100n-Propylbenzene - 67Toluene - 8201,3,5-Trimethylbenzene - 1201,2,4-Trimethylbenzene - 230Xylenes (total) - 410
MW-6Benzene - 5.0Ethylbenzene - 5.6Naphthalene - 1.0n-Propylbenzene - 0.50Toluene - 8.51,3,5-Trimethylbenzene - 0.631,2,4-Trimethylbenzene - 2.0Xylenes (total) - 9.9
MW-7Ethylbenzene - 2.5Isopropylbenzene - 0.80Naphthalene - 1.8n-Propylbenzene - 3.01,3,5-Trimethylbenzene - 8.41,2,4-Trimethylbenzene - 20Xylenes (total) - 11.5
MW-8Naphthalene - 0.85
MW-9BRL
MW-11BRL
RW-1Benzene - 13sec-Butylbenzene - 2.7Isopropylbenzene - 0.94Naphthalene - 9.4
MW-10BRL
VEW-1Benzene - 470n-Butylbenzene - 22sec-Butylbenzene - 7.6Ethylbenzene - 1,400Isopropylbenzene - 61p-Isopropyltoluene - 4.5 JNaphthalene - 510n-Propylbenzene - 190Toluene - 1,0001,2,4-Trimethylbenzene - 5201,3,5-Trimethylbenzene - 130Xylenes (total) - 1,090
VEW-2Ethylbenzene - 0.77Naphthalene - 0.83
RW-2Benzene - 350Ethylbenzene - 470Naphthalene - 170n-Propulbenzene - 52Toluene - 3,8001,3,5-Trimethylbenzene - 1401,2,4-Trimethylbenzene - 500Xylenes (total) - 2,900
MW-12BRL
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@? N:\ENV_EH&S\Env\GIS - ENV\Projects\2014\70149672 - Blalock Fina State Lead\70149672B - TA-01\Fig6_BenzeneIso_70149672B_TA-01.mxdBenzene Isoconcentration Map(July and August 2021)FigureProject No.
Reviewed By:
Date:
Drawn By:
70149672B
ECD
DRM
September 2021 2401 Brentwood Rd.Raleigh, NC 27604
PH. [phone] terracon.com
6 N:\ENV_EH&S\Env\GIS - ENV\Projects\2014\70149672 - Blalock Fina State Lead\70149672B - TA-01\Fig6_BenzeneIso_70149672B_TA-01.mxdLegend
@A Monitoring Well
@?Vapor Extraction WellBenzene Isoconcentration Contour (inferred)
Excavation ExtentSite BoundaryFormer BuildingHarnett County Parcel Boundary
Data Sources:Site Boundary - Harnett County GISImagery - NC Onemap³
^_
Blalock Fina (Incident # 24238)3574 NC Highway 55Angier, Harnett County, North Carolina
0 40 8020Feet
MW-10<0.50
MW-4<0.50
RW-1*13
MW-7<0.50
VEW-1470
VEW-2<0.50MW-9<0.50
MW-11<0.50 MW-8<0.50
Notes:"<": indicates less than laboratory reporting limitConcentrations are in micrograms per liter (µg/L)NCDEQ 2L standard for benzene is 1 µg/L.Concentrations in bold exceeed 2L Standard.*: RW-1 not used for contouring purposes.H: analyzed out of holding time.
BarryGregoryResidence
BeckwithResidence
Grass
Grass
Cleared Land
Woods
NC Highway 55
89 Benzene Concentration (µg/L)
MW-12<0.50100 µg/L
1 .0 µg /L
MW-110 H
MW-3260RW-2350
MW-65.0
MW-589
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@? N:\ENV_EH&S\Env\GIS - ENV\Projects\2014\70149672 - Blalock Fina State Lead\70149672B - TA-01\Fig7_EthylbenzeneIso_70149672B_TA-01.mxdEthylbenzene Isoconcentration Map(July and August 2021)FigureProject No.
Reviewed By:
Date:
Drawn By:
70149672B
ECD
DRM
September 2021 2401 Brentwood Rd.Raleigh, NC 27604
PH. [phone] terracon.com
7 N:\ENV_EH&S\Env\GIS - ENV\Projects\2014\70149672 - Blalock Fina State Lead\70149672B - TA-01\Fig7_EthylbenzeneIso_70149672B_TA-01.mxdLegend
@A Monitoring Well
@?Vapor Extraction WellEthylbenzene Isoconcentration Contour (inferred)
Excavation ExtentSite BoundaryFormer BuildingHarnett County Parcel Boundary
Data Sources:Site Boundary - Harnett County GISImagery - NC Onemap³
^_
Blalock Fina (Incident # 24238)3574 NC Highway 55Angier, Harnett County, North Carolina
0 40 8020Feet
MW-10<0.50
MW-1470
MW-4<0.50
MW-5290
RW-1*<0.50
MW-72.5
VEW-11,400
VEW-20.77MW-9<0.50
MW-11<0.50
MW-65.6
MW-8<0.50
Notes:"<": indicates less than laboratory reporting limitConcentrations are in micrograms per liter (µg/L)NCDEQ 2L standard for ethylbenzene is 600 µg/L.Concentrations in bold exceeed 2L Standard.*: RW-1 and RW-2 not used for contouring purposes.
BarryGregoryResidence
BeckwithResidence
Grass
Grass
Cleared Land
Woods
NC Highway 55
470 Ethylbenzene Concentration (µg/L)
MW-12<0.50600 µg/L
MW-32,200RW-2*470
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@? N:\ENV_EH&S\Env\GIS - ENV\Projects\2014\70149672 - Blalock Fina State Lead\70149672B - TA-01\Fig8_NaphthaleneIso_70149672B_TA-01.mxdNaphthalene Isoconcentration Map(July and August 2021)FigureProject No.
Reviewed By:
Date:
Drawn By:
70149672B
ECD
DRM
September 2021 2401 Brentwood Rd.Raleigh, NC 27604
PH. [phone] terracon.com
8 N:\ENV_EH&S\Env\GIS - ENV\Projects\2014\70149672 - Blalock Fina State Lead\70149672B - TA-01\Fig8_NaphthaleneIso_70149672B_TA-01.mxdLegend
@A Monitoring Well
@?Vapor Extraction WellNaphthalene Isoconcentration Contour (inferred)
Excavation ExtentSite BoundaryFormer BuildingHarnett County Parcel Boundary
Data Sources:Site Boundary - Harnett County GISImagery - NC Onemap³
^_
Blalock Fina (Incident # 24238)3574 NC Highway 55Angier, Harnett County, North Carolina
0 40 8020Feet
MW-10<0.50
MW-4<0.50
RW-1*9.4 MW-3580RW-2170
MW-71.8
VEW-1510
VEW-20.83MW-9<0.50
MW-11<0.50
MW-61.0
MW-8<0.50
Notes:"<": indicates less than laboratory reporting limitConcentrations are in micrograms per liter (µg/L)NCDEQ 2L standard for naphthalene is 6 µg/L.Concentrations in bold exceeed 2L Standard.*: RW-1 not used for contouring purposes.H: analyzed out of holding time.
BarryGregoryResidence
BeckwithResidence
Grass
Grass
Cleared Land
Woods
NC Highway 55
580 Naphthalene Concentration (µg/L)
MW-12<0.5060 µg /L
6 µg/L
MW-1180 HMW-5100
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@? N:\ENV_EH&S\Env\GIS - ENV\Projects\2014\70149672 - Blalock Fina State Lead\70149672B - TA-01\Fig9_TolueneIso_70149672B_TA-01.mxdToluene Isoconcentration Map(July and August 2021)FigureProject No.
Reviewed By:
Date:
Drawn By:
70149672B
ECD
DRM
September 2021 2401 Brentwood Rd.Raleigh, NC 27604
PH. [phone] terracon.com
9 N:\ENV_EH&S\Env\GIS - ENV\Projects\2014\70149672 - Blalock Fina State Lead\70149672B - TA-01\Fig9_TolueneIso_70149672B_TA-01.mxdLegend
@A Monitoring Well
@?Vapor Extraction WellToluene Isoconcentration Contour (inferred)
Excavation ExtentSite BoundaryFormer BuildingHarnett County Parcel Boundary
Data Sources:Site Boundary - Harnett County GISImagery - NC Onemap³
^_
Blalock Fina (Incident # 24238)3574 NC Highway 55Angier, Harnett County, North Carolina
0 40 8020Feet
MW-10<0.50
MW-1500
MW-4<0.50
RW-1*<0.50
MW-7<0.50
VEW-11,000
VEW-2<0.50MW-9<0.50
MW-11<0.50
MW-68.6
MW-8<0.50
Notes:"<": indicates less than laboratory reporting limitConcentrations are in micrograms per liter (µg/L)NCDEQ 2L standard for toluene is 600 µg/L.Concentrations in bold exceeed 2L Standard.*: RW-1 not used for contouring purposes.
BarryGregoryResidence
BeckwithResidence
Grass
Grass
Cleared Land
Woods
NC Highway 55
500 Toluene Concentration (µg/L)
MW-12<0.50600 µg/L
MW-5820
MW-311,000RW-23,800
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@? N:\ENV_EH&S\Env\GIS - ENV\Projects\2014\70149672 - Blalock Fina State Lead\70149672B - TA-01\Fig10_XylenesIso_70149672B_TA-01.mxdTotal Xylenes Isoconcentration Map(July and August 2021)FigureProject No.
Reviewed By:
Date:
Drawn By:
70149672B
ECD
DRM
September 2021 2401 Brentwood Rd.Raleigh, NC 27604
PH. [phone] terracon.com
10 N:\ENV_EH&S\Env\GIS - ENV\Projects\2014\70149672 - Blalock Fina State Lead\70149672B - TA-01\Fig10_XylenesIso_70149672B_TA-01.mxdLegend
@A Monitoring Well
@?Vapor Extraction WellTotal Xylenes Isoconcentration Contour (inferred)
Excavation ExtentSite BoundaryFormer BuildingHarnett County Parcel Boundary
Data Sources:Site Boundary - Harnett County GISImagery - NC Onemap³
^_
Blalock Fina (Incident # 24238)3574 NC Highway 55Angier, Harnett County, North Carolina
0 40 8020Feet
MW-10<0.50
MW-4<0.50
MW-5410
RW-1*<0.50 MW-39,900RW-22,900
MW-711.5
VEW-11,090
VEW-2<0.50MW-9<0.50
MW-11<0.50
MW-69.9
MW-8<0.50
Notes:"<": indicates less than laboratory reporting limitConcentrations are in micrograms per liter (µg/L)NCDEQ 2L standard for xylenes is 500 µg/L.Concentrations in bold exceeed 2L Standard.*: RW-1 not used for contouring purposes.
H: Analyzed out of holding time.
BarryGregoryResidence
BeckwithResidence
Grass
Grass
Cleared Land
Woods
NC Highway 55
500 Total Xylenes Concentration (µg/L)
MW-12<0.50500 µg/L
MW-11,090 H
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&*
&*
&*&*&*
&*&*&*
&*&*
&*&*&*&*
&*&*
&*
&*
MW-10
MW-1
MW-4
MW-5
RW-1 MW-3
RW-2
MW-7
VEW-1
VEW-2MW-9
MW-11
MW-6
MW-8
NC Highway 55
@A
MW-12
N:\ENV_EH&S\Env\GIS - ENV\Projects\2014\70149672 - Blalock Fina State Lead\70149672B - TA-01\Fig11_CRP Borings_70149672B_TA-01.mxdCRP Persulfate ApplicationBoring Location MapProject No.
Reviewed By:
Date:
Drawn By:
70149672B
ECD
DRM
September 2021 2401 Brentwood Rd.Raleigh, NC 27604
PH. [phone] terracon.com N:\ENV_EH&S\Env\GIS - ENV\Projects\2014\70149672 - Blalock Fina State Lead\70149672B - TA-01\Fig11_CRP Borings_70149672B_TA-01.mxdLegend
&*Application Borings (August 2021)
@A Monitoring Well
@?Vapor Extraction WellExcavation Extent
Former BuildingSite Boundary
ResidenceHarnett County Parcel Boundary
Data Sources:Well and Boring Locations - TerraconSite Boundary - Harnett County GISImagery - NCOneMap³
^_Blalock Fina (Incident # 24238)3574 NC Highway 55Angier, Harnett County, North Carolina
0 40 8020 Feet
Figure
11
Notes:Boring depth ranged from 15 to 18 feet below land surface.CRP Persulfate applied in borings from bottom of boring toapproximately 5 to 7 feet below land surface.

TABLES
Two 1,000-gallon gas USTs and one 550-gallon gas UST (removed 2001)
Information not available
Information not available
NA
Coastal Plain
Residual Impacts
Extent
Contaminants of Concern
Concentrations
Soil Type Sand
Residual Impacts Yes
Extent vicinity of UST excavation
Contaminants of Concern Gasoline compounds
Concentrations Above soil-to-groundwater MSCCs but below residential MSCCs
Soil Type Primarily sand to clayey sands
Source to GW?Yes
NAPL Present? Residual or Mobile?Free product not detected in monitoring wells since 2012
Depth to Groundwater approximately 3 to 10 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
Extend Off-Site?Extends off-site to southwest under NC Highway 55
Contaminants of Concern BTEX and other gasoline compounds
Concentrations Less than four orders of magnitude above 2L Standard (above GCLs in MW-5 in 2018)
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 150 feet southwest (an unnamed pond)
VOC compounds not detected in sample from pond (2018)
Below laboratory reporting limits
NA
Lateral Distance from Impacts to Building ~110 feet southwest to off-site residence (site not developed)
Depth to GW approximately 2 to 10 feet below land surface
Precluding Factors Present? Specify.Historical 1,2-DCA and EDB detections (lead scavenger)
GW Concentrations > VISLs?Yes
Exterior Soil Gas Concentrations >VISLs?
Sub-Slab Concentrations > VISLs?
Indoor Air Concentrations > VISLs?
Is the VI Pathway Complete?
1,224 tons of impacted soil excavated during UST removal in 2001,subsequent soil sampling
indicates residual soil impacts in vadose zone below residential MSCCs
1) MMPE event in 2004
2) Injection of oxidation and oxygen releasing compound in 2011. Post-injection
concentrations generally lower, but several well exhibit increased concentrations and/or
mobilization of NAPL.
3) Applcation of controlled release polymer persulfate and instantaneous release persulfate in
18 on-site borings (August 2021)
Number within 250 feet None identified
Number within 250-500 feet 1 non-potable (WSW-6) and 1 inactive (WSW-10)
Number within 500-1,000 feet 11 (2 inactive, 2 non-potable, 7 potable)
Not Evaluated
Future structures (site not developed), structures <100 ft from impacts
Vacant; residential structure planned by potential future owner
Concentrations below Residential MSCCs - close without soil use restriction
NAPL and/or >GCLs GCL exceedance in MW-5 (2018)
Water Supply Wells Restrict use on-site
Topographically down-gradient pond - detections not reported January 2018
VI evaluation recommended prior to property development
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 Intrusion UST: underground storage tank
MSCC: NCDEQ maximum soil contaminant concentrations NA: not applicable
2L Standard: 15A NCAC 2L groundwater quality standards GW: groundwater
GCL: NCDEQ gross contamination levels VOC: volatile organic compound
VISL: NCDEQ vapor intrusion screening levels BTEX: benzene, toluene, ethylbenzene, xylenes
NAPL: non-aqueous phase liquid DCA: dichloroethane
NCDEQ UST Guidance: NCDEQ UST Section Guidelines for Assessment VI: Vapor Intrusion
and Corrective Action for UST ReleasesRemediationReceptorsWSWsSurface Water (Modeling/Screening or Empirical)Closure PathwaySoil
GWSoil VaporScreeningAssessmentOther
SoilPhysiographic Province
SurficialGroundwaterSource
Areas
UST(s)
Dispensers
Piping
SurfaceWaterDistance from Source
Contaminants of Concern
Concentrations
Not Sampled
SubsurfaceSurface Water
Vapor Intrusion
Vapor Intrusion (Modeling/Screening or Empirical)
Current/Proposed Property Use
Not Sampled
Soil (Type, When, Successful?)SurficialNot Sampled
BedrockGroundwater or Surficial Source?
Groundwater (Type, When, Successful?)
Table 1
Conceptual Site Model
Blalock Fina (Incident #24238)
3574 NC Highway 55, Angier, North Carolina
Terracon Project Number: 70149672B
WSW-1 Alfred and Linda Champion
Family Trust
88 Colby Lane
Angier, NC 27501
88 Colby Lane
Angier, NC 27501 780 feet / north Active / Potable 0692-03-7390.000
WSW-2 Arnold and Dawn Champion 126 Colby Lane
Angier, NC 27501
3878 NC 55 West
Angier, NC 27501 945 feet / north Active / Potable 0692-03-3402.000
WSW-3 Randy Wayne Yost 3605 Old Stage Road
Angier, NC 27501
3605 Old Stage Road
Angier, NC 27501 835 feet / northeast Active / Potable 0692-12-6945.000
WSW-4 William Patrick Smith II 62 Dark Forest Drive
Chapel Hill, NC 27516
3515 Old Stage Road North
Angier, NC 27501 1,000 feet / east Unknown 0692-12-8531.000
WSW-5 Randy K. and Linda C. McGee 3478 NC Highway 55 West
Angier, NC 27501
3478 NC Highway 55 West
Angier, NC 27501 625 feet / east Active / Potable 0692-12-3457.000
WSW-6 Harold L. and Ann S. Moore 3522 NC Highway 55 West
Angier, NC 27501
3498 NC Highway 55 West
Angier, NC 27501 410 feet / east Active / Non-potable 0692-12-1398.000
WSW-7 Cesareo Garcia Sanchez &
Juan Cordova Eugenia
3489 Old Stage Road North
Angier, NC 27501
3489 Old Stage Road North
Angier, NC 27501 840 feet / southeast Active / Potable 0692-12-6139.000
WSW-8 Christopher W. Taylor PO Box 2690
Lillington, NC 27546
3386 NC Highway 55 West
Angier, NC 27501 950 feet / southeast
Unknown; property
connected to municipal
water
0692-12-6081.000
WSW-9 John Burnett P.O. Box 322
Holly Springs, NC 27540
3393 Old Stage Road North
Angier, NC 27501 1,100 feet / southeast Active / Non-potable 0692-11-7993.000
WSW-10 Christopher Thomas Moss 3535 NC Highway 55 West
Angier, NC 27501
3535 NC Highway 55 West
Angier, NC 27501 275 feet / south Inactive 0692-02-9241.000
WSW-11 Andrew M. Roach 2104 Bull Run Drive
Apex, NC 27539
136 Old Stage Court
Coats, NC 27521 1,050 feet / south Active / Potable 0692-11-1653.000
WSW-12 Nicholes L. and Jennice R. West 2729 Old Stage Court
Coats, NC 27521
145 Old Stage Court
Coats, NC 27521 780 feet / south Active / Potable 0692-01-9706.000
WSW-13 Roger Hutchinson & Natividad
Hutchinson
137 Old Stage Court
Coats, NC 27521
137 Old Stage Court
Coats, NC 27521 870 feet / south Active / Potable 0692-01-8696.000
WSW-14 Jerry J. Lambert 303 N. Lincoln St
Benson, NC 27504
123 Old Stage Court
Coats, NC 27521 1,040 feet / south Active / Potable 0692-01-9505.000
WSW-15 James Douglas Johnson, Jr.46 Creature Meadow Lane
Angier, NC 27501
46 Creature Meadow Lane
Angier, NC 27501 510 feet / southwest Active / Non-potable 0692-02-2306.000
WSW-16 Thomas N. Taylor 309 Head Street
Paris, TN 38242
3713 NC Highway 55 West
Angier, NC 27501 790 feet / northwest Active / Non-potable 0692-03-0008.000
WSW-17 Lyndon L. and Sherri Sargent 201 Pointer Creek Drive
Angier, NC 27501
201 Pointer Creek Drive
Angier, NC 27501 1,260 feet / west Active / Potable 0682-92-9336.000
WSW-18 Margaret Bennett and Lewis Lowe 172 Doug Johnson Lane
Angier, NC 27501
172 Doug Johnson Lane
Angier, NC 27501 1,370 feet / north Active / Potable 0692-03-6829.000
WSW-19 Eduado Julio Ruiz c/o Lucio Ruiz 222 Doug Johnson Lane
Angier, NC 27501
222 Doug Johnson Lane
Angier, NC 27501 1,380 feet / north Active / Potable 0692-03-8922.000
WSW-20 Wallace Roy Walden PO Box 831
Angier, NC 27501
150 Doug Johnson Lane
Angier, NC 27501 1,360 feet / north Active / Potable 0692-03-4895.000
WSW-21 Lynn P. Walden PO Box 831
Angier, NC 27501
124 Doug Johnson Lane
Angier, NC 27501 1,370 feet / north Active / Potable 0692-03-3777.000
WSW-22 Joyce P. Carter 3446 Old Stage Road North
Angier, NC 27501
3421 Old Stage Road North
Angier, NC 27501 1,130 feet / southeast Active / Non-potable 0692-12-8126.000
WSW-23 Dominic D. Cannavaro and
Helen B. Stewart
1510 Ridge Road
Raleigh, NC 27607
207 Colby Lane
Angier, NC 27501 1,200 feet / north Active / Potable 0692-03-6740.000
WSW-24 Dominic D. Cannavaro and
Helen B. Stewart
1510 Ridge Road
Raleigh, NC 27607
235 Colby Lane
Angier, NC 27501 1,220 feet / north Active / Potable 0692-03-8655.000
WSW-25 Dominic D. Cannavaro and
Helen B. Stewart
1510 Ridge Road
Raleigh, NC 27607
263 Colby Lane
Angier, NC 27501 1,240 feet / north Active / Potable 0692-13-0618.000
WSW-26 Paul Ray Santanio 240 Doug Johnson Lane
Angier 27501
240 Doug Johnson Lane
Angier 27501 1,410 feet / north Active / Potable 0692-03-9984.000
WSW-27 Anna Maria Smith PO Box 1404
Angier, NC 27501
3271 Old Stage Road North
Coats, NC 27521 1,380 feet / southeast Active / Potable 0692-11-4421.000
WSW-28 Robert E. and April R. Wronski 3304 Old Stage Road North
Coats, NC 27521
3304 Old Stage Road North
Coats, NC 27521 1,480 feet / southeast Active / Potable 0692-11-8442.000
WSW-29 Michelle Turner 3243 Old Stage Road North
Coats, NC 27521
3243 Old Stage Road North
Coats, NC 27521 1,480 feet / southeast Active / Potable 0692-11-3380.000
WSW-30 Joseph Roberts PO Box 422
Coats, NC 27521
3305 Old Stage Road North
Coats, NC 27521 1,280 feet / southest Active / Potable 0692-11-4771.000
WSW-31 Paul William Suksi 63 Old Stage Court
Coats, NC 27521
63 Old Stage Court
Coats, NC 27521 1,350 feet / south Active / Non-potable 0692-11-0145.000
WSW-32 Dana L. Green 75 Old Stage Court
Coats, NC 27521
75 Old Stage Court
Coats, NC 27521 1,250 feet / south Active / Non-potable 0692-01-9261.000
WSW-33 Elsie Kay Capps 78 Old Stage Court
Coats, NC 27521
78 Old Stage Court
Coats, NC 27521 1,290 feet / south Active / Non-potable 0692-11-1365.000
WSW-34 Daniel and Debora Lopez 89 Old Stage Court
Coats, NC 27512
89 Old Stage Court
Coats, NC 27512 1,230 feet / south Active / Potable 0692-01-9322.000
WSW-35 Linwood and Ina Marie Jones 105 Old Stage Court
Coats, NC 27521
105 Old Stage Court
Coats, NC 27521 1,050 feet / south Active / Potable 0692-01-9414.000
WSW-36 Brnell and Dennis McNeill 106 Old Stage Court
Coats, NC 27521
106 Old Stage Court
Coats, NC 27521 1,130 feet / south Active / Non-potable 0692-11-1449.000
WSW-37 Bobby Lee Stone 3270 Old Stage Road North
Coats, NC 27521
3270 Old Stage Road North
Coats, NC 27521 1,480 feet / southeast Active / Potable 0692-11-7255.000
WSW-38 Rosalio L. and Heather M. Calderon 3288 Old Stage Road North
Coats, NC 27521
3288 Old Stage Road North
Coats, NC 27521 1,470 feet / southeast Active / Potable 0692-11-7392.000
Well Status/Use Parcel IDWell No.Property Owner Mailing Address Property Address Distance/Direction from
source area
Table 2
Water Supply Well Information
Blalock Fina (Incident #24238)
3574 NC Highway 55, Angier, North Carolina
Terracon Project Number: 70149672B
Page 1 of 1
Table 3
Monitoring Well Construction Information and Historical Groundwater Elevations
Blalock Fina (Incident #24238)
3574 NC Highway 55, Angier, North Carolina
Terracon Project Number: 70149672B
Well ID Date Water Level
Measured
Well Casing Depth
(ft. BGS)
Screened Interval
(x to y ft. BGS)Bottom of Well4
(ft. BGS)
Top of Casing
Elevation (ft.)
Depth to Water
from Top of
Casing (ft.)
Free Product
Thickness (ft.)
Groundwater
Elevation (ft.)Comments
11/05/14 6.87 --93.13
02/11/15 4.59 --95.41
02/10/16 3.20 --96.80
06/28/17 7.11 --92.89
01/16/18 9.67 --90.33
03/04/19 2.91 --97.09
10/18/19 8.99 --91.01
05/04/20 6.08 --93.92
08/04/21 6.20 --93.80
11/05/14 5.95 --92.61
02/11/15 4.04 --94.52
02/10/16 3.13 --95.43
06/28/17 5.99 --92.57
01/16/18 8.49 --90.07
03/04/19 3.06 --95.50
10/18/19 7.57 --90.99
05/04/20 5.53 --93.03
07/14/21 7.30 --91.26
11/05/14 7.50 --92.09
02/11/15 5.16 --94.43
02/10/16 3.89 --95.70
06/29/17 7.31 --92.28
01/15/18 10.26 --89.33
03/04/19 3.15 --96.44
10/18/19 9.02 --90.57
05/04/20 6.85 --92.74
08/04/21 6.65 --92.94
11/05/14 7.20 --90.50
02/11/15 5.04 --92.66
02/10/16 4.27 --93.43
06/29/17 6.44 --91.26
01/15/18 9.08 --88.62
03/04/19 4.12 --93.58
10/18/19 7.85 --89.85
05/04/20 6.19 --91.51
07/14/21 6.00 --91.70
11/05/14 5.58 --87.61
02/11/15 4.83 --88.36
02/10/16 4.02 --89.17
06/28/17 5.12 --88.07
01/15/16 6.21 --86.98
03/04/19 3.82 --89.37
10/23/19 5.76 --87.43
05/04/20 4.90 --88.29
07/14/21 5.93 --87.26
11/05/14 7.12 --90.44
02/11/15 5.34 --92.22
02/10/16 4.77 --92.79
06/29/17 6.69 --90.87
01/15/18 9.21 --88.35
03/04/19 4.16 --93.40
10/18/19 7.69 --89.87
05/04/20 6.33 --91.23
07/14/21 6.75 --90.81
11/05/14 7.65 --86.12
02/11/15 7.26 --86.51
02/10/16 4.76 --89.01
06/28/17 7.53 --86.24
01/15/18 8.03 --85.74
03/04/19 4.91 --88.86
10/23/19 7.59 --86.18
05/04/20 7.33 --86.44
07/14/21 7.25 --86.52
Notes:
1. "-" indicates measureable amounts of free product were not detected
2. Bottom of well measurements are approximate and based off of field measurements; exact well construction data is unknown
3. BGS = below ground surface
4. Elevation is based on arbitrary datum set at 100.00 feet on the top-of-casing of MW-1.
2-inch
Type IIMW-8 4.0 4-12 13.0 93.77
MW-5 2.5 2.5-12.5 13.0 97.70
MW-4 8.5 8.5-18 18.0 99.59
MW-6
MW-7 4.0 4-11 11.0
5.0 5-10 11.0
MW-1 8.0
MW-3
8-18.5 18.0
8.0 8-18 18.0
100.00 2-inch
Type II
93.19 2-inch
Type II
97.56 2-inch
Type II
2-inch
Type II
2-inch
Type II
98.56 2-inch
Type II
Page 1 of 2
Table 3
Monitoring Well Construction Information and Historical Groundwater Elevations
Blalock Fina (Incident #24238)
3574 NC Highway 55, Angier, North Carolina
Terracon Project Number: 70149672B
Well ID Date Water Level
Measured
Well Casing Depth
(ft. BGS)
Screened Interval
(x to y ft. BGS)Bottom of Well4
(ft. BGS)
Top of Casing
Elevation (ft.)
Depth to Water
from Top of
Casing (ft.)
Free Product
Thickness (ft.)
Groundwater
Elevation (ft.)Comments
11/05/14 3.61 --86.54
02/11/15 3.27 --86.88
02/10/16 2.70 --87.45
06/28/17 3.36 --86.79
01/15/18 3.98 --86.17
03/04/19 2.56 --87.59
10/23/19 3.25 --86.90
05/04/20 3.20 --86.95
07/14/21 3.10 --87.05
03/04/19 3.54 --100.60
10/18/19 11.67 --92.47
08/04/21 9.02 --95.12
11/05/14 5.01 --83.78
02/11/15 4.35 --84.44
02/10/16 3.46 --85.33
06/28/17 Not Found ---
01/15/18 4.97 --83.82
03/04/19 3.64 --85.15
10/23/19 4.61 --84.18
05/04/20 4.33 --84.46
07/14/21 4.23 --84.56
10/23/19 8.09 --90.25
05/04/20 4.13 --94.21
07/14/21 4.95 --93.39
11/05/14 5.69 --92.71
02/11/15 3.66 --94.74
02/10/16 2.85 --95.55
06/28/17 5.83 --92.57
01/16/18 8.41 --89.99
03/04/19 2.70 --95.70
10/18/19 7.44 --90.96
05/04/20 5.31 --93.09
07/14/21 6.01 --92.39
11/05/14 5.46 --92.43
02/11/15 3.57 --94.32
02/10/16 2.75 --95.14
06/28/17 5.41 --92.48
01/16/18 7.83 --90.06
03/04/19 2.71 --95.18
10/18/19 6.95 --90.94
05/04/20 4.99 --92.90
07/14/21 5.75 --92.14
11/05/14 9.08 --88.10
02/11/15 8.21 --88.97
02/10/16 7.38 --89.80
06/28/17 8.61 --88.57
01/15/18 9.89 --87.29
03/04/19 7.36 --89.82
10/23/19 9.04 --88.14
05/04/20 8.40 --88.78
07/14/21 8.57 --88.61
11/05/14 9.64 --87.77
02/11/15 8.81 --88.60
02/10/16 8.13 --89.28
06/28/17 9.17 --88.24
01/15/18 10.38 --87.03
03/04/19 7.92 --89.49
10/23/19 9.29 --88.12
05/04/20 8.88 --88.53
07/14/21 9.98 --87.43
Notes:
1. "-" indicates measureable amounts of free product were not detected
2. Bottom of well measurements are approximate and based off of field measurements; exact well construction data is unknown
3. BGS = below ground surface
4. Elevation is based on arbitrary datum set at 100.00 feet on the top-of-casing of MW-1.
2-inch
Type II
VEW-2 8.0 8-18 18.0 97.41 2-inch
Type II
VEW-1 Unknown Unknown 18.0 97.18
98.40 2-inch
Type II
RW-2 5.0 5-10 10.0 97.89 2-inch
Type II
RW-1 5.0 5-10 10.0
4.0 4-14 14.0 98.34 2-inch
Type II
2-12 13.0 88.79 2-inch
Type II
MW-10 5.0 5-15 15.0 104.14
MW-12
MW-9 2.0 2-7 7.0 90.15 2-inch
Type II
2-inch
Type II
MW-11 2.0
Page 2 of 2
Table 4Summary of Groundwater Analytical Results
Blalock Fina (Incident #24238)
3574 NC Highway 55, Angier, North Carolina
Terracon Project Number: 70149672B
Well/Sample
I.D.Date Collected (mm/dd/yy)
1 70 70 3,000 70 3 0.02 0.4 0.4 70 600 70 25 20 6 70 70 0.2 600 400 400 5005,000 5,900 8,800 NE 70,000 3,000 50 400 400 70,000 80,000 30,500 11,700 20,000 6,000 26,100 70,000 200 260,000 24,100 28,500 50,0001.6 NE NE 19,000 3.6 220 0.18 2.2 21 1,400 3.5 180 NE 2,000 4.6 490 1,900 14 3,800 35 50 77
01/10/12 53.9 ND ND ---ND ---208 34.0 ND ND 184 94 ND -571 115 85.9 56905/17/12 9.6 ND ND ---ND ---124 7.41 ND ND 107 20.8 ND -147 41.5 172 33603/07/13 375 ND ND ---ND ---571 55.6 ND ND 313 104 6.8 -2,070 561 1,570 4,820
11/05/14 5.7 3.0 3.0 ---<0.50 <0.50 <0.50 <0.50 91.9 13.9 -<0.50 96.1 28.4 <0.50 <0.50 32 1.1 1 22
02/12/15 71 <2.5 3.0 ---<1.2 <1.2 <1.2 <1.2 288 29.7 -<1.2 174 68.6 1.2 J <1.2 149 51.8 242 60006/28/17 <0.50 <0.50 <0.50 -<0.50 -<0.50 <0.50 <0.50 <0.50 0.65 <0.50 <0.50 <0.50 <0.50 0.46 J <0.50 <0.50 0.82 <0.50 <0.50 <0.5001/16/18 0.98 3.6 2.2 0.42 J <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 84 9.2 0.88 <0.50 53 15 <0.50 <0.50 79 7.9 32 14603/04/19 13 7.9 3.6 <2.5 <2.5 <2.5 <2.5 <2.5 <2.5 <2.5 220 14 <2.5 <2.5 88 41 <2.5 <2.5 140 11 66 187
10/18/19 1.3 3 2.4 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 72 7.9 0.77 <0.50 42 9.1 <0.50 <0.50 25 7.9 33 12705/04/20 65 30 <2.5 <2.5 <2.5 <2.5 <2.5 <2.5 <2.5 <2.5 520 29 5.1 <2.5 150 100 <2.5 <2.5 310 89 250 50008/04/21 10 H 33 H 8.1 H <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 470 28 H 6.0 H <5.0 180 H 100 <5.0 <5.0 500 150 H 500 H 1,090 H01/10/12 5,950 ND ND ---ND ---8,860 966 ND ND 4,500 3,900 ND -37,100 8,470 25,300 49,700
05/17/12 264 15.2 ND ---ND ---375 23.9 ND ND 182 81.4 ND -4,160 126 557 1,96403/07/13 1,670 <50 <50 ---ND ---1,430 82.3 ND ND 805 225 33.4 -8,540 810 2,980 13,05002/12/15 2,000 <25 <25 ---<25 <25 <25 <25 2,370 84.5 -<25 864 252 53.1 <25 17,800 588 2,430 12,36002/10/16 1,800 <100 <100 ---<100 <100 260 <100 1,900 74 J <100 <100 690 240 <100 <100 15,000 560 2,100 9,900
06/28/17 1,800 <100 <100 -<100 -<100 <100 <100 <100 2,700 93 J <100 <100 810 280 <100 <100 20,000 570 2,300 13,200
01/16/18 1,200 <25 <25 <25 <25 <25 <25 <25 <25 <25 2,700 95 <25 <25 740 340 150 <25 21,000 700 2,600 12,40003/04/19 890 <100 <100 <100 <100 <100 <100 <100 <100 <100 2,400 83 J <100 <100 650 260 <100 <100 16,000 590 2,200 11,60010/18/19 820 <100 <100 <100 <100 <100 <100 <100 <100 <100 2,900 99 J <100 <100 850 310 <100 <100 19,000 680 2,500 12,300
05/04/20 560 <100 <100 <100 <100 <100 <100 <100 <100 <100 2,600 85 J <100 <100 630 280 <100 <100 19,000 560 2,100 11,700
07/14/21 260 <50 <50 <50 <50 <50 <50 <50 <50 <50 2,200 74 <50 <50 580 220 <50 <50 11,000 460 1,700 9,900
03/07/13 ND ND ND ---ND ---ND ND ND ND ND ND ND -0.32 J ND 0.34 J 0.77 J11/05/14 <0.50 <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 <0.50 <1.0
02/12/15 <0.50 <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 <0.50 <1.0
02/10/16 <0.50 0.41 J 0.2 J ---<0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 0.18 J <0.50 <0.50 <0.50 <0.50 <0.50 <0.5006/29/17 <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 <0.5001/15/18 <0.50 <0.50 <0.50 <0.50 <0.50 0.79 <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
03/04/19 <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
05/04/20 <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 <0.5008/04/21 <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 <0.5001/10/12 2,850 ND ND ---23.5 ---812 67.5 ND 9.9 434 ND ND -7,990 338 1,230 4,870
11/05/14 829 <25 <25 ---<25 <25 <25 <25 649 32.1 -<25 289 106 <25 <25 4,820 236 851 3,480
02/12/15 953 <25 <25 ---<25 <25 <25 <25 1,060 49.3 -<25 317 154 <25 <25 6,420 279 1,090 5,35002/10/16 1,200 <100 <100 ---<100 <100 <100 <100 1,200 57 J <100 <100 340 170 <100 <100 9,000 320 1,200 5,50006/29/17 5,300 <10 11 <10 <10 -<10 <10 <10 <10 1,700 63 <10 <10 460 210 67 <10 12,000 390 1,200 5,40003/04/19 600 <50 <50 <50 <50 <50 <50 <50 <50 <50 1,200 63 <50 <50 350 200 <50 <50 3,900 270 650 2,600
10/18/19 640 34 <25 <25 <25 <25 <25 <25 <25 <25 1,100 41 <25 <25 270 150 <25 <25 3,000 150 270 1,05005/04/20 790 <50 <50 <50 <50 <50 <50 <50 <50 <50 1,400 57 <50 <50 330 200 <50 <50 7,600 290 810 2,58007/14/21 89 <5.0 4.3 J <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 290 19 <5.0 <5.0 100 67 <5.0 <5.0 820 120 230 41001/10/12
05/17/12 4,400 ND ND ---ND ---2,210 116 ND ND 930 ND ND -11,800 709 2,850 11,98003/07/13 2,820 ND ND ---ND ---2,180 125 ND ND 848 ND 32.6 J -10,500 814 3,040 13,16002/11/15 658 <5.0 <5.0 ---2.8 J <5.0 <5.0 <5.0 163 6.0 -<5.0 33.4 16.7 <5.0 <5.0 1,670 30.1 120 79202/10/16 47 <0.50 <0.50 ---<0.50 <0.50 <0.50 <0.50 6.2 <0.50 <0.50 <0.50 0.83 0.43 J <0.50 <0.50 67 1.2 3.4 27.2
06/28/17 820 <5.0 <5.0 -<5.0 -<5.0 <5.0 <5.0 <5.0 220 7.0 <5.0 <5.0 49 19 <5.0 <5.0 730 39 140 570
01/15/18 380 <2.5 <2.5 <2.5 <2.5 <2.5 <2.5 <2.5 <2.5 <2.5 79 2.8 <2.5 <2.5 22 6.6 <2.5 <2.5 110 20 63 18103/04/19 220 <0.50 0.49 J <0.50 <0.50 <0.50 <0.50 5.2 <0.50 <0.50 130 4.3 <0.50 <0.50 33 13 <0.50 <0.50 280 18 46 22010/23/19 65 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 22 0.65 <0.50 <0.50 3.5 1.6 <0.50 <0.50 19 1.3 3.3 17.7
05/04/20 74 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 16 <0.50 <0.50 <0.50 1.3 0.72 <0.50 <0.50 80 1.2 4.2 29
07/14/21 5.0 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 5.6 <0.50 <0.50 <0.50 1.0 0.50 <0.50 <0.50 8.5 0.63 2.0 9.9
Notes:
Results in micrograms per liter (µg/L).NE - Not Established
Petroleum compounds detected in one or more samples are shown.J - estimated value below laboratory reporting limit and above method detection limit.
Gray shading denotes concentrations above 15A NCAC 2L groundwater standard (2L standard).H - Sample analyzed outside of holding time.
Yellow shading denotes concentrations above Gross Contamination Levels (GCLs).ND - Not detected
GW-VISL: NCDEQ DWM Groundwater Vapor Intrusion Screen Level, June 2021.'-' Indicates not analyzed
MW-4
MW-3
MW-5
2L Standard (ug/L)
Gross Contamination Level (GCL) (ug/L)Residential GW-VISL (ug/L)
MW-6
Sample not collected due to free product in well 1,2,4-TrimethylbenzeneXylenes, TotalStyrene1,1,2,2-Tetrachloroethane1,3,5-TrimethylbenzeneMW-1
Analytical Method VOCs via Method 6200B including MTBE, IPE, and EDB
Contaminant of Concern →Benzenen-Butylbenzenesec-ButylbenzeneChloromethanep-IsopropyltolueneMethyl tert-Butyl Ether(MTBE)Naphthalenen-PropylbenzeneChloroethaneChloroformtrans-1,3-Dichloropropene1,2-Dibromoethane (EDB)1,2-DichloroethaneDiisopropyl Ether (IPE)EthylbenzeneIsopropylbenzeneToluenePage 1 of 3
Table 4Summary of Groundwater Analytical Results
Blalock Fina (Incident #24238)
3574 NC Highway 55, Angier, North Carolina
Terracon Project Number: 70149672B
Well/Sample
I.D.Date Collected (mm/dd/yy)
1 70 70 3,000 70 3 0.02 0.4 0.4 70 600 70 25 20 6 70 70 0.2 600 400 400 5005,000 5,900 8,800 NE 70,000 3,000 50 400 400 70,000 80,000 30,500 11,700 20,000 6,000 26,100 70,000 200 260,000 24,100 28,500 50,0001.6 NE NE 19,000 3.6 220 0.18 2.2 21 1,400 3.5 180 NE 2,000 4.6 490 1,900 14 3,800 35 50 77
2L Standard (ug/L)
Gross Contamination Level (GCL) (ug/L)Residential GW-VISL (ug/L)1,2,4-TrimethylbenzeneXylenes, TotalStyrene1,1,2,2-Tetrachloroethane1,3,5-TrimethylbenzeneAnalytical Method VOCs via Method 6200B including MTBE, IPE, and EDB
Contaminant of Concern →Benzenen-Butylbenzenesec-ButylbenzeneChloromethanep-IsopropyltolueneMethyl tert-Butyl Ether(MTBE)Naphthalenen-PropylbenzeneChloroethaneChloroformtrans-1,3-Dichloropropene1,2-Dibromoethane (EDB)1,2-DichloroethaneDiisopropyl Ether (IPE)EthylbenzeneIsopropylbenzeneToluene01/10/1205/17/12 0.54 ND ND ---ND ---5.7 0.87 ND ND 7.5 3.4 ND -10.3 9.4 33.1 4003/07/13 ND ND ND ---ND ---ND ND ND ND ND ND ND -ND ND 0.41 J ND
11/06/14 <0.50 <0.50 <0.50 ---<0.50 <0.50 <0.50 <0.50 1.5 1.0 -<0.50 1.0 J 1.5 <0.50 <0.50 0.46 J 7.5 20.9 <0.50
02/11/15 <0.50 <0.50 <0.50 ---<0.50 <0.50 <0.50 <0.50 7.0 2.7 -<0.50 3.3 6.2 <0.50 <0.50 1.9 22.5 58.9 32.002/10/16 <0.50 <0.50 0.53 ---<0.50 <0.50 <0.50 <0.50 4.6 2 <0.50 <0.50 1.3 4.4 <0.50 <0.50 1.7 16 35 21.906/27/17 <0.50 2.7 0.83 -0.50 -<0.50 <0.50 <0.50 <0.50 13 3.9 <0.50 <0.50 5.3 11 <0.50 <0.50 1.5 29 84 20.1
01/15/18 <0.50 1.5 0.42 J <0.50 <0.50 0.41 J <0.50 <0.50 <0.50 <0.50 13 3.2 <0.50 <0.50 8.2 8.9 <0.50 <0.50 3.3 14 80 24.1
03/04/19 <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 0.65 0.46 J <0.50 <0.50 <0.50 1.6 3.8 0.7110/18/19 <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 0.68 <0.50 <0.50 <0.50 2.3 5 1.805/04/20 <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 0.59 0.89 <0.50 <0.50 0.57 2.6 5.7 9.607/14/21 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 2.5 0.80 <0.50 <0.50 1.8 3.0 <0.50 <0.50 <0.50 8.4 20 11.501/10/12 ND ND ND ---ND ---ND ND ND ND ND ND ND -ND ND ND ND05/17/12 ND ND ND ---ND ---ND ND ND ND ND ND ND -ND ND ND ND
03/07/13 ND ND ND ---ND ---ND ND ND ND ND ND ND -ND ND ND ND
11/07/14 <0.50 <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 <0.50 <1.002/11/15 <0.50 <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 <0.50 <1.002/10/16 <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
06/28/17 <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
01/15/18 0.43 J <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 0.53 <0.50 <0.50 4.9 <0.50 <0.50 <0.50 <0.50 4.6 3.8 6.003/04/19 <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 <1.010/23/19 <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 4.9 <0.50 <0.50 <0.50 <0.50 3.1 <0.50 <0.50
05/04/20 0.69 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 0.47 J <0.50 <0.50 6.1 <0.50 <0.50 <0.50 <0.50 3.4 <0.50 <0.50
07/14/21 <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 0.85 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50
01/10/12 ND ND ND ---ND ---ND ND ND ND ND ND ND -ND ND ND ND
05/17/12 ND ND ND ---ND ---ND ND ND ND ND ND ND -ND ND ND ND
03/07/13 ND ND ND ---ND ---ND ND ND ND ND ND ND -ND ND ND ND11/07/14 <0.50 <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 <0.50 <1.002/11/15 <0.50 <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 <0.50 <1.0
02/10/16 <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
06/28/17 <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 <0.5003/04/19 <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 <1.010/23/19 <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
05/04/20 <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
07/14/21 <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
01/10/12 ND ND ND ---ND ---ND ND ND ND ND ND ND -ND ND ND ND05/17/12 ND ND ND ---ND ---ND ND ND ND ND ND ND -ND ND ND ND03/07/13 ND ND ND ---ND ---ND ND ND ND ND ND ND -0.31 J ND 0.32 J 0.54 J11/07/14
03/04/19 <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 <1.0
10/18/19 <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 0.56 <0.50 <0.50 <0.5005/04/2008/04/21 <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
01/10/12 12.9 5.7 ND ---ND ---ND 6.8 ND 2.1 35.1 19.4 ND -2.2 7.9 16.7 10.7
05/17/12 58.2 0.82 0.62 ---ND ---ND 2.5 ND 2.6 2.8 6.4 ND -1.7 2.3 ND 5.603/07/13 1.5 0.64 0.33 J ---ND ---ND 0.79 ND ND 3.4 2.0 ND -ND ND 0.48 J ND11/07/14 7.5 0.28 J 0.30 J ---<0.50 <0.50 <0.50 <0.50 7.9 1.6 -3.6 8.6 2.7 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0
02/11/15 0.62 <0.50 <0.50 ---<0.50 <0.50 <0.50 <0.50 1.5 0.26 J -<0.50 <2.0 0.35 J <0.50 <0.50 <0.50 <0.50 <0.50 <1.0
02/10/16 <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 <0.5006/29/1701/15/18 11 <0.50 1.1 <0.50 <0.50 0.71 <0.50 <0.50 <0.50 <0.50 15 5.2 0.76 <0.50 7.2 4.0 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50
10/23/19 4.0 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 0.94 <0.50 <0.50 <0.50 0.45 J <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50
05/04/20 <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
07/14/21 <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
10/23/19 <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 <0.5005/04/20 <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 <0.5007/14/21 <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
Notes:
Results in micrograms per liter (µg/L).NE - Not Established
Petroleum compounds detected in one or more samples are shown.J - estimated value below laboratory reporting limit and above method detection limit.
Gray shading denotes concentrations above 15A NCAC 2L groundwater standard (2L standard).H - Sample analyzed outside of holding time.
Yellow shading denotes concentrations above Gross Contamination Levels (GCLs).ND - Not detected
GW-VISL: NCDEQ DWM Groundwater Vapor Intrusion Screen Level, June 2021.'-' Indicates not analyzed
MW-9
MW-11
MW-10
Well not found
MW-12
Well not sampled since March 2013; well was assumed to be destroyed
Well not sampled
MW-7
MW-8
Sample not collected due to well being dry
Page 2 of 3
Table 4Summary of Groundwater Analytical Results
Blalock Fina (Incident #24238)
3574 NC Highway 55, Angier, North Carolina
Terracon Project Number: 70149672B
Well/Sample
I.D.Date Collected (mm/dd/yy)
1 70 70 3,000 70 3 0.02 0.4 0.4 70 600 70 25 20 6 70 70 0.2 600 400 400 5005,000 5,900 8,800 NE 70,000 3,000 50 400 400 70,000 80,000 30,500 11,700 20,000 6,000 26,100 70,000 200 260,000 24,100 28,500 50,0001.6 NE NE 19,000 3.6 220 0.18 2.2 21 1,400 3.5 180 NE 2,000 4.6 490 1,900 14 3,800 35 50 77
2L Standard (ug/L)
Gross Contamination Level (GCL) (ug/L)Residential GW-VISL (ug/L)1,2,4-TrimethylbenzeneXylenes, TotalStyrene1,1,2,2-Tetrachloroethane1,3,5-TrimethylbenzeneAnalytical Method VOCs via Method 6200B including MTBE, IPE, and EDB
Contaminant of Concern →Benzenen-Butylbenzenesec-ButylbenzeneChloromethanep-IsopropyltolueneMethyl tert-Butyl Ether(MTBE)Naphthalenen-PropylbenzeneChloroethaneChloroformtrans-1,3-Dichloropropene1,2-Dibromoethane (EDB)1,2-DichloroethaneDiisopropyl Ether (IPE)EthylbenzeneIsopropylbenzeneToluene01/10/1205/17/12 89.8 ND ND ---ND ---201 10.6 ND ND 150 24.2 ND -222 168 374 88503/07/13 466 ND ND ---ND ---771 48.3 ND ND 401 91.8 8.8 J -2,820 629 1,900 5,950
11/05/14 2.7 <0.50 0.80 ---<0.50 <0.50 <0.50 <0.50 0.67 0.6 -<0.50 6.7 <0.50 <0.50 <0.50 0.45 J 19 <0.50 0.27 J
02/12/15 46.1 <0.50 0.90 ---<0.50 <0.50 <0.50 <0.50 0.71 0.66 -<0.50 <2.0 0.62 <0.50 <0.50 3.3 8.3 <0.50 <1.002/10/16 34 <0.50 1.1 ---<0.50 <0.50 <0.50 <0.50 0.89 1 1.5 <0.50 12 0.55 <0.50 <0.50 0.46 J <0.50 <0.50 <0.5006/28/17 1.6 1.3 1.1 -<0.50 -<0.50 <0.50 <0.50 <0.50 0.67 0.44 J <0.50 <0.50 1.4 <0.50 <0.50 <0.50 1.5 <0.50 <0.50 0.62
01/16/18 4.0 <0.50 1.3 0.68 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 34 2.7 <0.50 <0.50 16 3.3 <0.50 <0.50 1.1 0.75 2.4 10.4
03/04/19 230 <2.5 <2.5 <2.5 <2.5 <2.5 <2.5 <2.5 <2.5 <2.5 59 5.8 <2.5 <2.5 6.8 <2.5 <2.5 <2.5 2.8 <2.5 <2.5 3.010/18/19 25 <0.50 0.53 <0.50 <0.50 <0.50 <0.50 0.74 <0.50 <0.50 7.1 1.9 <0.50 <0.50 9.4 1.4 <0.50 <0.50 0.65 1.5 5.3 6.105/04/20 34 <0.50 2.4 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 1.4 1.4 <0.50 <0.50 24 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 0.41 J07/14/21 13 <0.50 2.7 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 0.94 <0.50 <0.50 9.4 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.5001/10/1205/17/12 458 ND ND ---ND ---848 64.8 ND ND 675 170 ND -5,860 617 2,450 8,910
03/07/13 416 ND ND ---ND ---1,330 99.7 ND ND 884 261 ND -7,910 1,020 3,520 12,650
11/05/14 423 <25 <25 ---<25 <25 <25 <25 704 31.9 -<25 403 99.1 14.2 J <25 4,550 272 758 3,26002/12/15 768 <25 <25 ---<25 <25 <25 <25 1,510 66.6 -<25 510 198 32.5 <25 8,990 468 1,410 7,16002/10/16 530 <50 <50 ---<50 <50 <50 <50 1,800 73 <50 <50 520 220 <50 <50 9,500 510 1,600 8,500
06/28/17 450 <50 <50 -<50 -<50 <50 <50 <50 1,500 58 <50 <50 520 160 <50 <50 7,500 380 1,500 8,800
01/16/18 220 <2.5 5.1 <2.5 <2.5 <2.5 <2.5 <2.5 <2.5 <2.5 990 41 <2.5 <2.5 320 120 60 <2.5 4,300 300 1,100 5,60003/04/19 390 <50 <50 <50 <50 <50 <50 <50 <50 <50 2400 84 <50 <50 660 250 <50 <50 7,900 500 1,900 9,60010/18/19 210 <25 <25 <25 <25 <25 <25 <25 <25 <25 680 31 <25 <25 230 94 <25 <25 4,400 240 890 3,600
05/04/20 660 <100 <100 <100 <100 <100 <100 <100 <100 <100 2,400 82 J <100 <100 630 240 <100 <100 11,000 530 2,000 12,600
07/14/21 350 <25 <25 <25 <25 <25 <25 <25 <25 <25 470 <25 <25 <25 170 52 <25 <25 3,800 140 500 2,900
01/10/12 1,210 ND ND ---1.6 ---733 36.6 ND 2.4 198 94.9 ND -3,450 195 715 3,720
05/17/12 1,260 15.6 ND ---2.1 ---1,180 48.9 ND 2.7 337 134 ND -4,670 133 961 5,270
03/07/13 1,120 ND 35.0 ---ND ---908 53.2 ND ND 438 138 14.3 -2,110 359 857 2,87711/06/14 2,670 <12.5 <12.5 ---<12.5 <12.5 <12.5 <12.5 1,170 46.1 -<12.5 519 152 <12.5 <12.5 512 307 348 17702/11/15 2,830 <10 <10 ---<10 <10 <10 <10 1,440 62.1 -<10 555 173 22.3 <10 3,330 392 975 1,746
02/10/16 2,700 <50 <50 ---<50 <50 <50 <50 1,800 64 <50 <50 520 190 <50 <50 4,200 390 800 2,200
06/28/17 1,300 41 <25 -<25 -<25 <25 <25 <25 1,700 75 <25 <25 630 220 <25 <25 3,700 460 1,300 2,09001/15/18 2,000 <10 12 <10 <10 <10 <10 <10 <10 <10 2,300 86 <10 <10 670 290 77 <10 10,000 540 1,800 7,40003/04/19 1,300 <50 <50 <50 <50 <50 <50 <50 <50 <50 2,500 88 <50 <50 700 270 <50 <50 6,100 450 1,500 5,400
10/23/19 1,200 <50 <50 <50 <50 <50 <50 <50 <50 <50 1,900 74 <50 <50 690 230 <50 <50 4,100 370 1,300 3,390
05/04/20 1,200 <50 <50 <50 <50 <50 <50 <50 <50 <50 2,200 81 <50 <50 560 250 <50 <50 5,700 430 1,500 5,00007/14/21 470 22 7.6 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 1,400 61 4.5 J <5.0 510 190 <5.0 <5.0 1,000 130 520 1,09001/10/12 7.4 ND ND ---ND ---229 17.4 ND ND 106 38.6 1.9 -5.6 127 179 82.305/17/12 37.5 ND ND ---ND ---99 10.4 ND ND 142 26.6 ND -6.3 64.9 106 42.503/07/13 14.9 ND ND ---ND ---30.7 3.3 ND ND 116 7.4 0.72 -7.5 16.3 5.7 20.9
11/06/14 40.7 <1.2 2.6 ---<1.2 <1.2 <1.2 <1.2 208 16.8 -<1.2 179 42 <1.2 <1.2 105 86.4 132 455
02/11/15 26.2 <0.50 <0.50 ---<0.50 <0.50 <0.50 <0.50 73.7 8.4 -<0.50 97.8 14.8 <0.50 <0.50 10.9 46.6 16.3 58.702/10/16 28 <0.50 0.75 ---<0.50 <0.50 <0.50 <0.50 36 3.8 0.51 <0.50 30 6.7 <0.50 0.49 J 1.1 17 1.6 7.106/28/17 14 1.0 0.49 J -<0.50 -<0.50 <0.50 <0.50 <0.50 32 2.6 <0.50 <0.50 17 5.1 <0.50 <0.50 <0.50 0.55 6.7 1.98
01/15/18 14 <0.50 0.5 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 14 2.5 <0.50 <0.50 16 3.0 <0.50 <0.50 <0.50 11 <0.50 <0.50
03/04/19 40 <0.50 1.2 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 14 5.6 0.67 <0.50 36 2.9 <0.50 <0.50 1.0 34 <0.50 <0.5010/23/19 16 1.4 1.3 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 21 5.5 0.74 <0.50 24 7.6 <0.50 <0.50 <0.50 22 1.1 0.6805/04/20 3.4 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 0.93 <0.50 <0.50 <0.50 1.9 <0.50 <0.50 <0.50 <0.50 0.48 J <0.50 <0.50
07/14/21 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 0.77 <0.50 <0.50 <0.50 0.83 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50
Pond 01/16/18 <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 <0.50Notes:
Results in micrograms per liter (µg/L).NE - Not Established
Petroleum compounds detected in one or more samples are shown.J - estimated value below laboratory reporting limit and above method detection limit.
Gray shading denotes concentrations above 15A NCAC 2L groundwater standard (2L standard).H - Sample analyzed outside of holding time.
Yellow shading denotes concentrations above Gross Contamination Levels (GCLs).ND - Not detected
GW-VISL: NCDEQ DWM Groundwater Vapor Intrusion Screen Level, June 2021.'-' Indicates not analyzed
VEW-1
VEW-2
Sample not collected due to well being dry
Sample not collected due to well being dry
RW-1
RW-2
Page 3 of 3

APPENDIX A
PHOTOGRAPHS AND FIELD NOTES

Annual Monitoring Report
Blalock Fina (Incident #24238)■Angier, North Carolina
Photos Taken: July and August 2021 ■Terracon Project No. 70149672B
Photo #1 View of the site; facing northwest.Photo #2 View of MW-1; facing southwest.
Photo #3 View of MW-3 and RW-2; facing west.Photo #4 View of MW-4; facing south.
Annual Monitoring Report
Blalock Fina (Incident #24238)■Angier, North Carolina
Photos Taken: July and August 2021 ■Terracon Project No. 70149672B
Photo #5 View of MW-5; facing south.Photo #6 View of MW-6; facing northwest.
Photo #7 View of MW-7; facing south.Photo #8 View of MW-8; facing east.
Annual Monitoring Report
Blalock Fina (Incident #24238)■Angier, North Carolina
Photos Taken: July and August 2021 ■Terracon Project No. 70149672B
Photo #9 View of MW-9; facing northeast.Photo #10 View of MW-10; facing north.
Photo #11 View of MW-11; facing north.Photo #12 View of MW-12; facing south.
Annual Monitoring Report
Blalock Fina (Incident #24238)■Angier, North Carolina
Photos Taken: July and August 2021 ■Terracon Project No. 70149672B
Photo #13 View of VEW-1; facing east.Photo #14 View of VEW-2; facing northwest.
Photo #15 View of borings being drilled for
application of controlled release polymer
persulfate and instantaneous release persulfate;
facing west.
Photo #16 View of bubbling created within
borings after activation of the instantaneous
release persulfate.
Annual Monitoring Report
Blalock Fina (Incident #24238)■Angier, North Carolina
Photos Taken: July and August 2021 ■Terracon Project No. 70149672B
Photo #17 View of the application area; facing
west.
Photo #18 View of the persulfate application
borings being grouted; facing east.
Photo #18 View of the application area after
borings were completed and capped; facing
northwest.

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

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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:Ethan Dinwiddie
Project Name:Blalock Fina
Project Number:70149672B
Lot Number:WG16035
Date Completed:07/22/2021
07/22/2021 11:07 PM
Approved and released by:
Project Manager II:Cathy S.Dover
Page 1 of 42
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:WG16035
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
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Page 2 of 42
PACE ANALYTICAL SERVICES, LLC
Sample Summary
Terracon Consultants, Inc.
Lot Number: WG16035

Project Name: Blalock Fina
Project Number: 70149672B
Sample Number Sample ID Matrix Date Sampled Date Received
001 07/14/2021 1302MW-3 Aqueous 07/16/2021
002 07/14/2021 1400MW-5 Aqueous 07/16/2021
003 07/14/2021 1400MW-6 Aqueous 07/16/2021
004 07/14/2021 1432MW-7 Aqueous 07/16/2021
005 07/14/2021 1140MW-8 Aqueous 07/16/2021
006 07/14/2021 1300MW-9 Aqueous 07/16/2021
007 07/14/2021 1325MW-11 Aqueous 07/16/2021
008 07/14/2021 1150MW-12 Aqueous 07/16/2021
009 07/14/2021 1236RW-1 Aqueous 07/16/2021
010 07/14/2021 1322RW-2 Aqueous 07/16/2021
011 07/14/2021 1210VEW-1 Aqueous 07/16/2021
012 07/14/2021 1240VEW-2 Aqueous 07/16/2021
013 07/14/2021 1440FB-01 Aqueous 07/16/2021
014 07/14/2021TB-01 Aqueous 07/16/2021
(14 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 42
PACE ANALYTICAL SERVICES, LLC
Detection Summary
Terracon Consultants, Inc.
Lot Number: WG16035

Project Name: Blalock Fina
Project Number: 70149672B
Sample Sample ID Matrix Parameter Method Result Q Units Page
001 MW-3 Aqueous Benzene SM 6200B-260 ug/L 6
001 MW-3 Aqueous Ethylbenzene SM 6200B-2200 ug/L 6
001 MW-3 Aqueous Isopropylbenzene SM 6200B-74 ug/L 6
001 MW-3 Aqueous Naphthalene SM 6200B-580 ug/L 6
001 MW-3 Aqueous n-Propylbenzene SM 6200B-220 ug/L 6
001 MW-3 Aqueous Toluene SM 6200B-11000 ug/L 7
001 MW-3 Aqueous 1,3,5-Trimethylbenzene SM 6200B-460 ug/L 7
001 MW-3 Aqueous 1,2,4-Trimethylbenzene SM 6200B-1700 ug/L 7
001 MW-3 Aqueous m+p - Xylenes SM 6200B-7600 ug/L 7
001 MW-3 Aqueous o - Xylenes SM 6200B-2300 ug/L 7
002 MW-5 Aqueous Benzene SM 6200B-89 ug/L 8
002 MW-5 Aqueous sec-Butylbenzene SM 6200B-4.3 J ug/L 8
002 MW-5 Aqueous Ethylbenzene SM 6200B-290 ug/L 8
002 MW-5 Aqueous Isopropylbenzene SM 6200B-19 ug/L 8
002 MW-5 Aqueous Naphthalene SM 6200B-100 ug/L 8
002 MW-5 Aqueous n-Propylbenzene SM 6200B-67 ug/L 8
002 MW-5 Aqueous Toluene SM 6200B-820 ug/L 9
002 MW-5 Aqueous 1,3,5-Trimethylbenzene SM 6200B-120 ug/L 9
002 MW-5 Aqueous 1,2,4-Trimethylbenzene SM 6200B-230 ug/L 9
002 MW-5 Aqueous m+p - Xylenes SM 6200B-300 ug/L 9
002 MW-5 Aqueous o - Xylenes SM 6200B-110 ug/L 9
003 MW-6 Aqueous Benzene SM 6200B-5.0 ug/L 10
003 MW-6 Aqueous Ethylbenzene SM 6200B-5.6 ug/L 10
003 MW-6 Aqueous Naphthalene SM 6200B-1.0 ug/L 10
003 MW-6 Aqueous n-Propylbenzene SM 6200B-0.50 ug/L 10
003 MW-6 Aqueous Toluene SM 6200B-8.5 ug/L 11
003 MW-6 Aqueous 1,3,5-Trimethylbenzene SM 6200B-0.63 ug/L 11
003 MW-6 Aqueous 1,2,4-Trimethylbenzene SM 6200B-2.0 ug/L 11
003 MW-6 Aqueous m+p - Xylenes SM 6200B-5.6 ug/L 11
003 MW-6 Aqueous o - Xylenes SM 6200B-4.3 ug/L 11
004 MW-7 Aqueous Ethylbenzene SM 6200B-2.5 ug/L 12
004 MW-7 Aqueous Isopropylbenzene SM 6200B-0.80 ug/L 12
004 MW-7 Aqueous Naphthalene SM 6200B-1.8 ug/L 12
004 MW-7 Aqueous n-Propylbenzene SM 6200B-3.0 ug/L 12
004 MW-7 Aqueous 1,3,5-Trimethylbenzene SM 6200B-8.4 ug/L 13
004 MW-7 Aqueous 1,2,4-Trimethylbenzene SM 6200B-20 ug/L 13
004 MW-7 Aqueous m+p - Xylenes SM 6200B-9.4 ug/L 13
004 MW-7 Aqueous o - Xylenes SM 6200B-2.1 ug/L 13
005 MW-8 Aqueous Naphthalene SM 6200B-0.85 ug/L 14
009 RW-1 Aqueous Benzene SM 6200B-13 ug/L 22
009 RW-1 Aqueous sec-Butylbenzene SM 6200B-2.7 ug/L 22
009 RW-1 Aqueous Isopropylbenzene SM 6200B-0.94 ug/L 22
009 RW-1 Aqueous Naphthalene SM 6200B-9.4 ug/L 22
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 42
Detection Summary (Continued)
Lot Number: WG16035
Sample Sample ID Matrix Parameter Method Result Q Units Page
010 RW-2 Aqueous Benzene SM 6200B-350 ug/L 24
010 RW-2 Aqueous Ethylbenzene SM 6200B-470 ug/L 24
010 RW-2 Aqueous Naphthalene SM 6200B-170 ug/L 24
010 RW-2 Aqueous n-Propylbenzene SM 6200B-52 ug/L 24
010 RW-2 Aqueous Toluene SM 6200B-3800 ug/L 25
010 RW-2 Aqueous 1,3,5-Trimethylbenzene SM 6200B-140 ug/L 25
010 RW-2 Aqueous 1,2,4-Trimethylbenzene SM 6200B-500 ug/L 25
010 RW-2 Aqueous m+p - Xylenes SM 6200B-1800 ug/L 25
010 RW-2 Aqueous o - Xylenes SM 6200B-1100 ug/L 25
011 VEW-1 Aqueous Benzene SM 6200B-470 ug/L 26
011 VEW-1 Aqueous n-Butylbenzene SM 6200B-22 ug/L 26
011 VEW-1 Aqueous sec-Butylbenzene SM 6200B-7.6 ug/L 26
011 VEW-1 Aqueous Ethylbenzene SM 6200B-1400 ug/L 26
011 VEW-1 Aqueous Isopropylbenzene SM 6200B-61 ug/L 26
011 VEW-1 Aqueous p-Isopropyltoluene (p-SM 6200B-4.5 J ug/L 26
011 VEW-1 Aqueous Naphthalene SM 6200B-510 ug/L 26
011 VEW-1 Aqueous n-Propylbenzene SM 6200B-190 ug/L 26
011 VEW-1 Aqueous Toluene SM 6200B-1000 ug/L 27
011 VEW-1 Aqueous 1,3,5-Trimethylbenzene SM 6200B-130 ug/L 27
011 VEW-1 Aqueous 1,2,4-Trimethylbenzene SM 6200B-520 ug/L 27
011 VEW-1 Aqueous m+p - Xylenes SM 6200B-900 ug/L 27
011 VEW-1 Aqueous o - Xylenes SM 6200B-190 ug/L 27
012 VEW-2 Aqueous Ethylbenzene SM 6200B-0.77 ug/L 28
012 VEW-2 Aqueous Naphthalene SM 6200B-0.83 ug/L 28
(67 detections)
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Page 5 of 42
Volatile Organic Compounds by GC/MS
Description:Matrix:
Date Received:
Client:Laboratory ID:
Date Sampled:
Terracon Consultants, Inc.
MW-3
WG16035-001
07/14/2021 1302
07/16/2021
Aqueous
Project Name: Blalock Fina
Project Number: 70149672B
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 SM 6200B-SM 6200B-2011 100 07/20/2021 1831 BWS 99424
AnalyticalCAS
Parameter Number Method Result Q LOQ Units Run DL
Benzene 71-43-2 SM 6200B-2011 260 1ug/L4050
Bromobenzene 108-86-1 SM 6200B-2011 ND 1ug/L4050
Bromochloromethane 74-97-5 SM 6200B-2011 ND 1ug/L4050
Bromodichloromethane 75-27-4 SM 6200B-2011 ND 1ug/L4050
Bromoform 75-25-2 SM 6200B-2011 ND 1ug/L4050
Bromomethane (Methyl bromide)74-83-9 SM 6200B-2011 ND 1ug/L4050
n-Butylbenzene 104-51-8 SM 6200B-2011 ND 1ug/L4050
sec-Butylbenzene 135-98-8 SM 6200B-2011 ND 1ug/L4050
tert-Butylbenzene 98-06-6 SM 6200B-2011 ND 1ug/L4050
Carbon tetrachloride 56-23-5 SM 6200B-2011 ND 1ug/L4050
Chlorobenzene 108-90-7 SM 6200B-2011 ND 1ug/L4050
Chloroethane 75-00-3 SM 6200B-2011 ND 1ug/L4050
Chloroform 67-66-3 SM 6200B-2011 ND 1ug/L4050
Chloromethane (Methyl chloride)74-87-3 SM 6200B-2011 ND 1ug/L4050
2-Chlorotoluene 95-49-8 SM 6200B-2011 ND 1ug/L4050
4-Chlorotoluene 106-43-4 SM 6200B-2011 ND 1ug/L4050
Dibromochloromethane 124-48-1 SM 6200B-2011 ND 1ug/L4050
1,2-Dibromoethane (EDB)106-93-4 SM 6200B-2011 ND 1ug/L4050
Dibromomethane (Methylene bromide)74-95-3 SM 6200B-2011 ND 1ug/L4050
1,2-Dichlorobenzene 95-50-1 SM 6200B-2011 ND 1ug/L4050
1,3-Dichlorobenzene 541-73-1 SM 6200B-2011 ND 1ug/L4050
1,4-Dichlorobenzene 106-46-7 SM 6200B-2011 ND 1ug/L4050
Dichlorodifluoromethane 75-71-8 SM 6200B-2011 ND 1ug/L4050
1,1-Dichloroethane 75-34-3 SM 6200B-2011 ND 1ug/L4050
1,2-Dichloroethane 107-06-2 SM 6200B-2011 ND 1ug/L4050
1,1-Dichloroethene 75-35-4 SM 6200B-2011 ND 1ug/L4050
cis-1,2-Dichloroethene 156-59-2 SM 6200B-2011 ND 1ug/L4050
trans-1,2-Dichloroethene 156-60-5 SM 6200B-2011 ND 1ug/L4050
1,2-Dichloropropane 78-87-5 SM 6200B-2011 ND 1ug/L4050
1,3-Dichloropropane 142-28-9 SM 6200B-2011 ND 1ug/L4050
2,2-Dichloropropane 594-20-7 SM 6200B-2011 ND 1ug/L4050
1,1-Dichloropropene 563-58-6 SM 6200B-2011 ND 1ug/L4050
cis-1,3-Dichloropropene 10061-01-5 SM 6200B-2011 ND 1ug/L4050
trans-1,3-Dichloropropene 10061-02-6 SM 6200B-2011 ND 1ug/L4050
Diisopropyl ether (IPE)108-20-3 SM 6200B-2011 ND 1ug/L4050
Ethylbenzene 100-41-4 SM 6200B-2011 2200 1ug/L4050
Hexachlorobutadiene 87-68-3 SM 6200B-2011 ND 1ug/L4050
Isopropylbenzene (Cumene)98-82-8 SM 6200B-2011 74 1ug/L4050
p-Isopropyltoluene (p-Cymene)99-87-6 SM 6200B-2011 ND 1ug/L4050
Methyl tertiary butyl ether (MTBE)1634-04-4 SM 6200B-2011 ND 1ug/L4050
Methylene chloride 75-09-2 SM 6200B-2011 ND 1ug/L4050
Naphthalene 91-20-3 SM 6200B-2011 580 1ug/L4050
n-Propylbenzene 103-65-1 SM 6200B-2011 220 1ug/L4050
Styrene 100-42-5 SM 6200B-2011 ND 1ug/L4050
J = Estimated result < LOQ and > DL_
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range
P = The RPD between two GC columns exceeds 40%ND = Not detected at or above the DL N = Recovery is out of criteria
H = Out of holding time
Q = Surrogate failure
L = LCS/LCSD failure
S = MS/MSD failure
DL = Detection Limit
W = Reported on wet weight basis
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Page 6 of 42
Volatile Organic Compounds by GC/MS
Description:Matrix:
Date Received:
Client:Laboratory ID:
Date Sampled:
Terracon Consultants, Inc.
MW-3
WG16035-001
07/14/2021 1302
07/16/2021
Aqueous
Project Name: Blalock Fina
Project Number: 70149672B
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 SM 6200B-SM 6200B-2011 100 07/20/2021 1831 BWS 99424
AnalyticalCAS
Parameter Number Method Result Q LOQ Units Run DL
1,1,1,2-Tetrachloroethane 630-20-6 SM 6200B-2011 ND 1ug/L4050
1,1,2,2-Tetrachloroethane 79-34-5 SM 6200B-2011 ND 1ug/L4050
Tetrachloroethene 127-18-4 SM 6200B-2011 ND 1ug/L4050
Toluene 108-88-3 SM 6200B-2011 11000 1ug/L4050
1,1,2-Trichloro-1,2,2-Trifluoroethane 76-13-1 SM 6200B-2011 ND 1ug/L4050
1,2,3-Trichlorobenzene 87-61-6 SM 6200B-2011 ND 1ug/L4050
1,2,4-Trichlorobenzene 120-82-1 SM 6200B-2011 ND 1ug/L4050
1,1,1-Trichloroethane 71-55-6 SM 6200B-2011 ND 1ug/L4050
1,1,2-Trichloroethane 79-00-5 SM 6200B-2011 ND 1ug/L4050
Trichloroethene 79-01-6 SM 6200B-2011 ND 1ug/L4050
Trichlorofluoromethane 75-69-4 SM 6200B-2011 ND 1ug/L4050
1,2,3-Trichloropropane 96-18-4 SM 6200B-2011 ND 1ug/L4050
1,3,5-Trimethylbenzene (Mesitylene)108-67-8 SM 6200B-2011 460 1ug/L4050
1,2,4-Trimethylbenzene 95-63-6 SM 6200B-2011 1700 1ug/L4050
Vinyl chloride 75-01-4 SM 6200B-2011 ND 1ug/L4050
m+p - Xylenes 179601-23-1 SM 6200B-2011 7600 1ug/L4050
o - Xylenes 95-47-6 SM 6200B-2011 2300 1ug/L4050
AcceptanceRun 1
Surrogate Q % Recovery Limits
1,2-Dichloroethane-d4 104 70-130
Bromofluorobenzene 103 70-130
Toluene-d8 106 70-130
J = Estimated result < LOQ and > DL_
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range
P = The RPD between two GC columns exceeds 40%ND = Not detected at or above the DL N = Recovery is out of criteria
H = Out of holding time
Q = Surrogate failure
L = LCS/LCSD failure
S = MS/MSD failure
DL = Detection Limit
W = Reported on wet weight basis
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Page 7 of 42
Volatile Organic Compounds by GC/MS
Description:Matrix:
Date Received:
Client:Laboratory ID:
Date Sampled:
Terracon Consultants, Inc.
MW-5
WG16035-002
07/14/2021 1400
07/16/2021
Aqueous
Project Name: Blalock Fina
Project Number: 70149672B
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 SM 6200B-SM 6200B-2011 10 07/20/2021 1714 BWS 99424
AnalyticalCAS
Parameter Number Method Result Q LOQ Units Run DL
Benzene 71-43-2 SM 6200B-2011 89 1ug/L4.05.0
Bromobenzene 108-86-1 SM 6200B-2011 ND 1ug/L4.05.0
Bromochloromethane 74-97-5 SM 6200B-2011 ND 1ug/L4.05.0
Bromodichloromethane 75-27-4 SM 6200B-2011 ND 1ug/L4.05.0
Bromoform 75-25-2 SM 6200B-2011 ND 1ug/L4.05.0
Bromomethane (Methyl bromide)74-83-9 SM 6200B-2011 ND 1ug/L4.05.0
n-Butylbenzene 104-51-8 SM 6200B-2011 ND 1ug/L4.05.0
sec-Butylbenzene 135-98-8 SM 6200B-2011 4.3 J 1ug/L4.05.0
tert-Butylbenzene 98-06-6 SM 6200B-2011 ND 1ug/L4.05.0
Carbon tetrachloride 56-23-5 SM 6200B-2011 ND 1ug/L4.05.0
Chlorobenzene 108-90-7 SM 6200B-2011 ND 1ug/L4.05.0
Chloroethane 75-00-3 SM 6200B-2011 ND 1ug/L4.05.0
Chloroform 67-66-3 SM 6200B-2011 ND 1ug/L4.05.0
Chloromethane (Methyl chloride)74-87-3 SM 6200B-2011 ND 1ug/L4.05.0
2-Chlorotoluene 95-49-8 SM 6200B-2011 ND 1ug/L4.05.0
4-Chlorotoluene 106-43-4 SM 6200B-2011 ND 1ug/L4.05.0
Dibromochloromethane 124-48-1 SM 6200B-2011 ND 1ug/L4.05.0
1,2-Dibromoethane (EDB)106-93-4 SM 6200B-2011 ND 1ug/L4.05.0
Dibromomethane (Methylene bromide)74-95-3 SM 6200B-2011 ND 1ug/L4.05.0
1,2-Dichlorobenzene 95-50-1 SM 6200B-2011 ND 1ug/L4.05.0
1,3-Dichlorobenzene 541-73-1 SM 6200B-2011 ND 1ug/L4.05.0
1,4-Dichlorobenzene 106-46-7 SM 6200B-2011 ND 1ug/L4.05.0
Dichlorodifluoromethane 75-71-8 SM 6200B-2011 ND 1ug/L4.05.0
1,1-Dichloroethane 75-34-3 SM 6200B-2011 ND 1ug/L4.05.0
1,2-Dichloroethane 107-06-2 SM 6200B-2011 ND 1ug/L4.05.0
1,1-Dichloroethene 75-35-4 SM 6200B-2011 ND 1ug/L4.05.0
cis-1,2-Dichloroethene 156-59-2 SM 6200B-2011 ND 1ug/L4.05.0
trans-1,2-Dichloroethene 156-60-5 SM 6200B-2011 ND 1ug/L4.05.0
1,2-Dichloropropane 78-87-5 SM 6200B-2011 ND 1ug/L4.05.0
1,3-Dichloropropane 142-28-9 SM 6200B-2011 ND 1ug/L4.05.0
2,2-Dichloropropane 594-20-7 SM 6200B-2011 ND 1ug/L4.05.0
1,1-Dichloropropene 563-58-6 SM 6200B-2011 ND 1ug/L4.05.0
cis-1,3-Dichloropropene 10061-01-5 SM 6200B-2011 ND 1ug/L4.05.0
trans-1,3-Dichloropropene 10061-02-6 SM 6200B-2011 ND 1ug/L4.05.0
Diisopropyl ether (IPE)108-20-3 SM 6200B-2011 ND 1ug/L4.05.0
Ethylbenzene 100-41-4 SM 6200B-2011 290 1ug/L4.05.0
Hexachlorobutadiene 87-68-3 SM 6200B-2011 ND 1ug/L4.05.0
Isopropylbenzene (Cumene)98-82-8 SM 6200B-2011 19 1ug/L4.05.0
p-Isopropyltoluene (p-Cymene)99-87-6 SM 6200B-2011 ND 1ug/L4.05.0
Methyl tertiary butyl ether (MTBE)1634-04-4 SM 6200B-2011 ND 1ug/L4.05.0
Methylene chloride 75-09-2 SM 6200B-2011 ND 1ug/L4.05.0
Naphthalene 91-20-3 SM 6200B-2011 100 1ug/L4.05.0
n-Propylbenzene 103-65-1 SM 6200B-2011 67 1ug/L4.05.0
Styrene 100-42-5 SM 6200B-2011 ND 1ug/L4.05.0
J = Estimated result < LOQ and > DL_
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range
P = The RPD between two GC columns exceeds 40%ND = Not detected at or above the DL N = Recovery is out of criteria
H = Out of holding time
Q = Surrogate failure
L = LCS/LCSD failure
S = MS/MSD failure
DL = Detection Limit
W = Reported on wet weight basis
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Page 8 of 42
Volatile Organic Compounds by GC/MS
Description:Matrix:
Date Received:
Client:Laboratory ID:
Date Sampled:
Terracon Consultants, Inc.
MW-5
WG16035-002
07/14/2021 1400
07/16/2021
Aqueous
Project Name: Blalock Fina
Project Number: 70149672B
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 SM 6200B-SM 6200B-2011 10 07/20/2021 1714 BWS 99424
AnalyticalCAS
Parameter Number Method Result Q LOQ Units Run DL
1,1,1,2-Tetrachloroethane 630-20-6 SM 6200B-2011 ND 1ug/L4.05.0
1,1,2,2-Tetrachloroethane 79-34-5 SM 6200B-2011 ND 1ug/L4.05.0
Tetrachloroethene 127-18-4 SM 6200B-2011 ND 1ug/L4.05.0
Toluene 108-88-3 SM 6200B-2011 820 1ug/L4.05.0
1,1,2-Trichloro-1,2,2-Trifluoroethane 76-13-1 SM 6200B-2011 ND 1ug/L4.05.0
1,2,3-Trichlorobenzene 87-61-6 SM 6200B-2011 ND 1ug/L4.05.0
1,2,4-Trichlorobenzene 120-82-1 SM 6200B-2011 ND 1ug/L4.05.0
1,1,1-Trichloroethane 71-55-6 SM 6200B-2011 ND 1ug/L4.05.0
1,1,2-Trichloroethane 79-00-5 SM 6200B-2011 ND 1ug/L4.05.0
Trichloroethene 79-01-6 SM 6200B-2011 ND 1ug/L4.05.0
Trichlorofluoromethane 75-69-4 SM 6200B-2011 ND 1ug/L4.05.0
1,2,3-Trichloropropane 96-18-4 SM 6200B-2011 ND 1ug/L4.05.0
1,3,5-Trimethylbenzene (Mesitylene)108-67-8 SM 6200B-2011 120 1ug/L4.05.0
1,2,4-Trimethylbenzene 95-63-6 SM 6200B-2011 230 1ug/L4.05.0
Vinyl chloride 75-01-4 SM 6200B-2011 ND 1ug/L4.05.0
m+p - Xylenes 179601-23-1 SM 6200B-2011 300 1ug/L4.05.0
o - Xylenes 95-47-6 SM 6200B-2011 110 1ug/L4.05.0
AcceptanceRun 1
Surrogate Q % Recovery Limits
1,2-Dichloroethane-d4 100 70-130
Bromofluorobenzene 96 70-130
Toluene-d8 105 70-130
J = Estimated result < LOQ and > DL_
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range
P = The RPD between two GC columns exceeds 40%ND = Not detected at or above the DL N = Recovery is out of criteria
H = Out of holding time
Q = Surrogate failure
L = LCS/LCSD failure
S = MS/MSD failure
DL = Detection Limit
W = Reported on wet weight basis
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Page 9 of 42
Volatile Organic Compounds by GC/MS
Description:Matrix:
Date Received:
Client:Laboratory ID:
Date Sampled:
Terracon Consultants, Inc.
MW-6
WG16035-003
07/14/2021 1400
07/16/2021
Aqueous
Project Name: Blalock Fina
Project Number: 70149672B
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 SM 6200B-SM 6200B-2011 1 07/20/2021 1415 BWS 99424
AnalyticalCAS
Parameter Number Method Result Q LOQ Units Run DL
Benzene 71-43-2 SM 6200B-2011 5.0 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 5.6 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 1.0 1ug/L0.400.50
n-Propylbenzene 103-65-1 SM 6200B-2011 0.50 1ug/L0.400.50
Styrene 100-42-5 SM 6200B-2011 ND 1ug/L0.400.50
J = Estimated result < LOQ and > DL_
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range
P = The RPD between two GC columns exceeds 40%ND = Not detected at or above the DL N = Recovery is out of criteria
H = Out of holding time
Q = Surrogate failure
L = LCS/LCSD failure
S = MS/MSD failure
DL = Detection Limit
W = Reported on wet weight basis
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Page 10 of 42
Volatile Organic Compounds by GC/MS
Description:Matrix:
Date Received:
Client:Laboratory ID:
Date Sampled:
Terracon Consultants, Inc.
MW-6
WG16035-003
07/14/2021 1400
07/16/2021
Aqueous
Project Name: Blalock Fina
Project Number: 70149672B
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 SM 6200B-SM 6200B-2011 1 07/20/2021 1415 BWS 99424
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 8.5 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 0.63 1ug/L0.400.50
1,2,4-Trimethylbenzene 95-63-6 SM 6200B-2011 2.0 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 5.6 1ug/L0.400.50
o - Xylenes 95-47-6 SM 6200B-2011 4.3 1ug/L0.400.50
AcceptanceRun 1
Surrogate Q % Recovery Limits
1,2-Dichloroethane-d4 105 70-130
Bromofluorobenzene 98 70-130
Toluene-d8 107 70-130
J = Estimated result < LOQ and > DL_
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range
P = The RPD between two GC columns exceeds 40%ND = Not detected at or above the DL N = Recovery is out of criteria
H = Out of holding time
Q = Surrogate failure
L = LCS/LCSD failure
S = MS/MSD failure
DL = Detection Limit
W = Reported on wet weight basis
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Page 11 of 42
Volatile Organic Compounds by GC/MS
Description:Matrix:
Date Received:
Client:Laboratory ID:
Date Sampled:
Terracon Consultants, Inc.
MW-7
WG16035-004
07/14/2021 1432
07/16/2021
Aqueous
Project Name: Blalock Fina
Project Number: 70149672B
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 SM 6200B-SM 6200B-2011 1 07/20/2021 1349 BWS 99424
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 2.5 1ug/L0.400.50
Hexachlorobutadiene 87-68-3 SM 6200B-2011 ND 1ug/L0.400.50
Isopropylbenzene (Cumene)98-82-8 SM 6200B-2011 0.80 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 1.8 1ug/L0.400.50
n-Propylbenzene 103-65-1 SM 6200B-2011 3.0 1ug/L0.400.50
Styrene 100-42-5 SM 6200B-2011 ND 1ug/L0.400.50
J = Estimated result < LOQ and > DL_
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range
P = The RPD between two GC columns exceeds 40%ND = Not detected at or above the DL N = Recovery is out of criteria
H = Out of holding time
Q = Surrogate failure
L = LCS/LCSD failure
S = MS/MSD failure
DL = Detection Limit
W = Reported on wet weight basis
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Page 12 of 42
Volatile Organic Compounds by GC/MS
Description:Matrix:
Date Received:
Client:Laboratory ID:
Date Sampled:
Terracon Consultants, Inc.
MW-7
WG16035-004
07/14/2021 1432
07/16/2021
Aqueous
Project Name: Blalock Fina
Project Number: 70149672B
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 SM 6200B-SM 6200B-2011 1 07/20/2021 1349 BWS 99424
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 8.4 1ug/L0.400.50
1,2,4-Trimethylbenzene 95-63-6 SM 6200B-2011 20 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 9.4 1ug/L0.400.50
o - Xylenes 95-47-6 SM 6200B-2011 2.1 1ug/L0.400.50
AcceptanceRun 1
Surrogate Q % Recovery Limits
1,2-Dichloroethane-d4 107 70-130
Bromofluorobenzene 103 70-130
Toluene-d8 109 70-130
J = Estimated result < LOQ and > DL_
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range
P = The RPD between two GC columns exceeds 40%ND = Not detected at or above the DL N = Recovery is out of criteria
H = Out of holding time
Q = Surrogate failure
L = LCS/LCSD failure
S = MS/MSD failure
DL = Detection Limit
W = Reported on wet weight basis
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Page 13 of 42
Volatile Organic Compounds by GC/MS
Description:Matrix:
Date Received:
Client:Laboratory ID:
Date Sampled:
Terracon Consultants, Inc.
MW-8
WG16035-005
07/14/2021 1140
07/16/2021
Aqueous
Project Name: Blalock Fina
Project Number: 70149672B
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 SM 6200B-SM 6200B-2011 1 07/20/2021 1324 BWS 99424
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 0.85 1ug/L0.400.50
n-Propylbenzene 103-65-1 SM 6200B-2011 ND 1ug/L0.400.50
Styrene 100-42-5 SM 6200B-2011 ND 1ug/L0.400.50
J = Estimated result < LOQ and > DL_
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range
P = The RPD between two GC columns exceeds 40%ND = Not detected at or above the DL N = Recovery is out of criteria
H = Out of holding time
Q = Surrogate failure
L = LCS/LCSD failure
S = MS/MSD failure
DL = Detection Limit
W = Reported on wet weight basis
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Page 14 of 42
Volatile Organic Compounds by GC/MS
Description:Matrix:
Date Received:
Client:Laboratory ID:
Date Sampled:
Terracon Consultants, Inc.
MW-8
WG16035-005
07/14/2021 1140
07/16/2021
Aqueous
Project Name: Blalock Fina
Project Number: 70149672B
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 SM 6200B-SM 6200B-2011 1 07/20/2021 1324 BWS 99424
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 105 70-130
Bromofluorobenzene 97 70-130
Toluene-d8 110 70-130
J = Estimated result < LOQ and > DL_
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range
P = The RPD between two GC columns exceeds 40%ND = Not detected at or above the DL N = Recovery is out of criteria
H = Out of holding time
Q = Surrogate failure
L = LCS/LCSD failure
S = MS/MSD failure
DL = Detection Limit
W = Reported on wet weight basis
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Page 15 of 42
Volatile Organic Compounds by GC/MS
Description:Matrix:
Date Received:
Client:Laboratory ID:
Date Sampled:
Terracon Consultants, Inc.
MW-9
WG16035-006
07/14/2021 1300
07/16/2021
Aqueous
Project Name: Blalock Fina
Project Number: 70149672B
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 SM 6200B-SM 6200B-2011 1 07/20/2021 1258 BWS 99424
AnalyticalCAS
Parameter Number Method Result Q LOQ Units Run DL
Benzene 71-43-2 SM 6200B-2011 ND 1ug/L0.400.50
Bromobenzene 108-86-1 SM 6200B-2011 ND 1ug/L0.400.50
Bromochloromethane 74-97-5 SM 6200B-2011 ND 1ug/L0.400.50
Bromodichloromethane 75-27-4 SM 6200B-2011 ND 1ug/L0.400.50
Bromoform 75-25-2 SM 6200B-2011 ND 1ug/L0.400.50
Bromomethane (Methyl bromide)74-83-9 SM 6200B-2011 ND 1ug/L0.400.50
n-Butylbenzene 104-51-8 SM 6200B-2011 ND 1ug/L0.400.50
sec-Butylbenzene 135-98-8 SM 6200B-2011 ND 1ug/L0.400.50
tert-Butylbenzene 98-06-6 SM 6200B-2011 ND 1ug/L0.400.50
Carbon tetrachloride 56-23-5 SM 6200B-2011 ND 1ug/L0.400.50
Chlorobenzene 108-90-7 SM 6200B-2011 ND 1ug/L0.400.50
Chloroethane 75-00-3 SM 6200B-2011 ND 1ug/L0.400.50
Chloroform 67-66-3 SM 6200B-2011 ND 1ug/L0.400.50
Chloromethane (Methyl chloride)74-87-3 SM 6200B-2011 ND 1ug/L0.400.50
2-Chlorotoluene 95-49-8 SM 6200B-2011 ND 1ug/L0.400.50
4-Chlorotoluene 106-43-4 SM 6200B-2011 ND 1ug/L0.400.50
Dibromochloromethane 124-48-1 SM 6200B-2011 ND 1ug/L0.400.50
1,2-Dibromoethane (EDB)106-93-4 SM 6200B-2011 ND 1ug/L0.400.50
Dibromomethane (Methylene bromide)74-95-3 SM 6200B-2011 ND 1ug/L0.400.50
1,2-Dichlorobenzene 95-50-1 SM 6200B-2011 ND 1ug/L0.400.50
1,3-Dichlorobenzene 541-73-1 SM 6200B-2011 ND 1ug/L0.400.50
1,4-Dichlorobenzene 106-46-7 SM 6200B-2011 ND 1ug/L0.400.50
Dichlorodifluoromethane 75-71-8 SM 6200B-2011 ND 1ug/L0.400.50
1,1-Dichloroethane 75-34-3 SM 6200B-2011 ND 1ug/L0.400.50
1,2-Dichloroethane 107-06-2 SM 6200B-2011 ND 1ug/L0.400.50
1,1-Dichloroethene 75-35-4 SM 6200B-2011 ND 1ug/L0.400.50
cis-1,2-Dichloroethene 156-59-2 SM 6200B-2011 ND 1ug/L0.400.50
trans-1,2-Dichloroethene 156-60-5 SM 6200B-2011 ND 1ug/L0.400.50
1,2-Dichloropropane 78-87-5 SM 6200B-2011 ND 1ug/L0.400.50
1,3-Dichloropropane 142-28-9 SM 6200B-2011 ND 1ug/L0.400.50
2,2-Dichloropropane 594-20-7 SM 6200B-2011 ND 1ug/L0.400.50
1,1-Dichloropropene 563-58-6 SM 6200B-2011 ND 1ug/L0.400.50
cis-1,3-Dichloropropene 10061-01-5 SM 6200B-2011 ND 1ug/L0.400.50
trans-1,3-Dichloropropene 10061-02-6 SM 6200B-2011 ND 1ug/L0.400.50
Diisopropyl ether (IPE)108-20-3 SM 6200B-2011 ND 1ug/L0.400.50
Ethylbenzene 100-41-4 SM 6200B-2011 ND 1ug/L0.400.50
Hexachlorobutadiene 87-68-3 SM 6200B-2011 ND 1ug/L0.400.50
Isopropylbenzene (Cumene)98-82-8 SM 6200B-2011 ND 1ug/L0.400.50
p-Isopropyltoluene (p-Cymene)99-87-6 SM 6200B-2011 ND 1ug/L0.400.50
Methyl tertiary butyl ether (MTBE)1634-04-4 SM 6200B-2011 ND 1ug/L0.400.50
Methylene chloride 75-09-2 SM 6200B-2011 ND 1ug/L0.400.50
Naphthalene 91-20-3 SM 6200B-2011 ND 1ug/L0.400.50
n-Propylbenzene 103-65-1 SM 6200B-2011 ND 1ug/L0.400.50
Styrene 100-42-5 SM 6200B-2011 ND 1ug/L0.400.50
J = Estimated result < LOQ and > DL_
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range
P = The RPD between two GC columns exceeds 40%ND = Not detected at or above the DL N = Recovery is out of criteria
H = Out of holding time
Q = Surrogate failure
L = LCS/LCSD failure
S = MS/MSD failure
DL = Detection Limit
W = Reported on wet weight basis
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Page 16 of 42
Volatile Organic Compounds by GC/MS
Description:Matrix:
Date Received:
Client:Laboratory ID:
Date Sampled:
Terracon Consultants, Inc.
MW-9
WG16035-006
07/14/2021 1300
07/16/2021
Aqueous
Project Name: Blalock Fina
Project Number: 70149672B
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 SM 6200B-SM 6200B-2011 1 07/20/2021 1258 BWS 99424
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 105 70-130
Bromofluorobenzene 100 70-130
Toluene-d8 110 70-130
J = Estimated result < LOQ and > DL_
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range
P = The RPD between two GC columns exceeds 40%ND = Not detected at or above the DL N = Recovery is out of criteria
H = Out of holding time
Q = Surrogate failure
L = LCS/LCSD failure
S = MS/MSD failure
DL = Detection Limit
W = Reported on wet weight basis
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Page 17 of 42
Volatile Organic Compounds by GC/MS
Description:Matrix:
Date Received:
Client:Laboratory ID:
Date Sampled:
Terracon Consultants, Inc.
MW-11
WG16035-007
07/14/2021 1325
07/16/2021
Aqueous
Project Name: Blalock Fina
Project Number: 70149672B
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 SM 6200B-SM 6200B-2011 1 07/20/2021 1233 BWS 99424
AnalyticalCAS
Parameter Number Method Result Q LOQ Units Run DL
Benzene 71-43-2 SM 6200B-2011 ND 1ug/L0.400.50
Bromobenzene 108-86-1 SM 6200B-2011 ND 1ug/L0.400.50
Bromochloromethane 74-97-5 SM 6200B-2011 ND 1ug/L0.400.50
Bromodichloromethane 75-27-4 SM 6200B-2011 ND 1ug/L0.400.50
Bromoform 75-25-2 SM 6200B-2011 ND 1ug/L0.400.50
Bromomethane (Methyl bromide)74-83-9 SM 6200B-2011 ND 1ug/L0.400.50
n-Butylbenzene 104-51-8 SM 6200B-2011 ND 1ug/L0.400.50
sec-Butylbenzene 135-98-8 SM 6200B-2011 ND 1ug/L0.400.50
tert-Butylbenzene 98-06-6 SM 6200B-2011 ND 1ug/L0.400.50
Carbon tetrachloride 56-23-5 SM 6200B-2011 ND 1ug/L0.400.50
Chlorobenzene 108-90-7 SM 6200B-2011 ND 1ug/L0.400.50
Chloroethane 75-00-3 SM 6200B-2011 ND 1ug/L0.400.50
Chloroform 67-66-3 SM 6200B-2011 ND 1ug/L0.400.50
Chloromethane (Methyl chloride)74-87-3 SM 6200B-2011 ND 1ug/L0.400.50
2-Chlorotoluene 95-49-8 SM 6200B-2011 ND 1ug/L0.400.50
4-Chlorotoluene 106-43-4 SM 6200B-2011 ND 1ug/L0.400.50
Dibromochloromethane 124-48-1 SM 6200B-2011 ND 1ug/L0.400.50
1,2-Dibromoethane (EDB)106-93-4 SM 6200B-2011 ND 1ug/L0.400.50
Dibromomethane (Methylene bromide)74-95-3 SM 6200B-2011 ND 1ug/L0.400.50
1,2-Dichlorobenzene 95-50-1 SM 6200B-2011 ND 1ug/L0.400.50
1,3-Dichlorobenzene 541-73-1 SM 6200B-2011 ND 1ug/L0.400.50
1,4-Dichlorobenzene 106-46-7 SM 6200B-2011 ND 1ug/L0.400.50
Dichlorodifluoromethane 75-71-8 SM 6200B-2011 ND 1ug/L0.400.50
1,1-Dichloroethane 75-34-3 SM 6200B-2011 ND 1ug/L0.400.50
1,2-Dichloroethane 107-06-2 SM 6200B-2011 ND 1ug/L0.400.50
1,1-Dichloroethene 75-35-4 SM 6200B-2011 ND 1ug/L0.400.50
cis-1,2-Dichloroethene 156-59-2 SM 6200B-2011 ND 1ug/L0.400.50
trans-1,2-Dichloroethene 156-60-5 SM 6200B-2011 ND 1ug/L0.400.50
1,2-Dichloropropane 78-87-5 SM 6200B-2011 ND 1ug/L0.400.50
1,3-Dichloropropane 142-28-9 SM 6200B-2011 ND 1ug/L0.400.50
2,2-Dichloropropane 594-20-7 SM 6200B-2011 ND 1ug/L0.400.50
1,1-Dichloropropene 563-58-6 SM 6200B-2011 ND 1ug/L0.400.50
cis-1,3-Dichloropropene 10061-01-5 SM 6200B-2011 ND 1ug/L0.400.50
trans-1,3-Dichloropropene 10061-02-6 SM 6200B-2011 ND 1ug/L0.400.50
Diisopropyl ether (IPE)108-20-3 SM 6200B-2011 ND 1ug/L0.400.50
Ethylbenzene 100-41-4 SM 6200B-2011 ND 1ug/L0.400.50
Hexachlorobutadiene 87-68-3 SM 6200B-2011 ND 1ug/L0.400.50
Isopropylbenzene (Cumene)98-82-8 SM 6200B-2011 ND 1ug/L0.400.50
p-Isopropyltoluene (p-Cymene)99-87-6 SM 6200B-2011 ND 1ug/L0.400.50
Methyl tertiary butyl ether (MTBE)1634-04-4 SM 6200B-2011 ND 1ug/L0.400.50
Methylene chloride 75-09-2 SM 6200B-2011 ND 1ug/L0.400.50
Naphthalene 91-20-3 SM 6200B-2011 ND 1ug/L0.400.50
n-Propylbenzene 103-65-1 SM 6200B-2011 ND 1ug/L0.400.50
Styrene 100-42-5 SM 6200B-2011 ND 1ug/L0.400.50
J = Estimated result < LOQ and > DL_
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range
P = The RPD between two GC columns exceeds 40%ND = Not detected at or above the DL N = Recovery is out of criteria
H = Out of holding time
Q = Surrogate failure
L = LCS/LCSD failure
S = MS/MSD failure
DL = Detection Limit
W = Reported on wet weight basis
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Page 18 of 42
Volatile Organic Compounds by GC/MS
Description:Matrix:
Date Received:
Client:Laboratory ID:
Date Sampled:
Terracon Consultants, Inc.
MW-11
WG16035-007
07/14/2021 1325
07/16/2021
Aqueous
Project Name: Blalock Fina
Project Number: 70149672B
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 SM 6200B-SM 6200B-2011 1 07/20/2021 1233 BWS 99424
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 104 70-130
Bromofluorobenzene 95 70-130
Toluene-d8 106 70-130
J = Estimated result < LOQ and > DL_
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range
P = The RPD between two GC columns exceeds 40%ND = Not detected at or above the DL N = Recovery is out of criteria
H = Out of holding time
Q = Surrogate failure
L = LCS/LCSD failure
S = MS/MSD failure
DL = Detection Limit
W = Reported on wet weight basis
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Page 19 of 42
Volatile Organic Compounds by GC/MS
Description:Matrix:
Date Received:
Client:Laboratory ID:
Date Sampled:
Terracon Consultants, Inc.
MW-12
WG16035-008
07/14/2021 1150
07/16/2021
Aqueous
Project Name: Blalock Fina
Project Number: 70149672B
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 SM 6200B-SM 6200B-2011 1 07/20/2021 1208 BWS 99424
AnalyticalCAS
Parameter Number Method Result Q LOQ Units Run DL
Benzene 71-43-2 SM 6200B-2011 ND 1ug/L0.400.50
Bromobenzene 108-86-1 SM 6200B-2011 ND 1ug/L0.400.50
Bromochloromethane 74-97-5 SM 6200B-2011 ND 1ug/L0.400.50
Bromodichloromethane 75-27-4 SM 6200B-2011 ND 1ug/L0.400.50
Bromoform 75-25-2 SM 6200B-2011 ND 1ug/L0.400.50
Bromomethane (Methyl bromide)74-83-9 SM 6200B-2011 ND 1ug/L0.400.50
n-Butylbenzene 104-51-8 SM 6200B-2011 ND 1ug/L0.400.50
sec-Butylbenzene 135-98-8 SM 6200B-2011 ND 1ug/L0.400.50
tert-Butylbenzene 98-06-6 SM 6200B-2011 ND 1ug/L0.400.50
Carbon tetrachloride 56-23-5 SM 6200B-2011 ND 1ug/L0.400.50
Chlorobenzene 108-90-7 SM 6200B-2011 ND 1ug/L0.400.50
Chloroethane 75-00-3 SM 6200B-2011 ND 1ug/L0.400.50
Chloroform 67-66-3 SM 6200B-2011 ND 1ug/L0.400.50
Chloromethane (Methyl chloride)74-87-3 SM 6200B-2011 ND 1ug/L0.400.50
2-Chlorotoluene 95-49-8 SM 6200B-2011 ND 1ug/L0.400.50
4-Chlorotoluene 106-43-4 SM 6200B-2011 ND 1ug/L0.400.50
Dibromochloromethane 124-48-1 SM 6200B-2011 ND 1ug/L0.400.50
1,2-Dibromoethane (EDB)106-93-4 SM 6200B-2011 ND 1ug/L0.400.50
Dibromomethane (Methylene bromide)74-95-3 SM 6200B-2011 ND 1ug/L0.400.50
1,2-Dichlorobenzene 95-50-1 SM 6200B-2011 ND 1ug/L0.400.50
1,3-Dichlorobenzene 541-73-1 SM 6200B-2011 ND 1ug/L0.400.50
1,4-Dichlorobenzene 106-46-7 SM 6200B-2011 ND 1ug/L0.400.50
Dichlorodifluoromethane 75-71-8 SM 6200B-2011 ND 1ug/L0.400.50
1,1-Dichloroethane 75-34-3 SM 6200B-2011 ND 1ug/L0.400.50
1,2-Dichloroethane 107-06-2 SM 6200B-2011 ND 1ug/L0.400.50
1,1-Dichloroethene 75-35-4 SM 6200B-2011 ND 1ug/L0.400.50
cis-1,2-Dichloroethene 156-59-2 SM 6200B-2011 ND 1ug/L0.400.50
trans-1,2-Dichloroethene 156-60-5 SM 6200B-2011 ND 1ug/L0.400.50
1,2-Dichloropropane 78-87-5 SM 6200B-2011 ND 1ug/L0.400.50
1,3-Dichloropropane 142-28-9 SM 6200B-2011 ND 1ug/L0.400.50
2,2-Dichloropropane 594-20-7 SM 6200B-2011 ND 1ug/L0.400.50
1,1-Dichloropropene 563-58-6 SM 6200B-2011 ND 1ug/L0.400.50
cis-1,3-Dichloropropene 10061-01-5 SM 6200B-2011 ND 1ug/L0.400.50
trans-1,3-Dichloropropene 10061-02-6 SM 6200B-2011 ND 1ug/L0.400.50
Diisopropyl ether (IPE)108-20-3 SM 6200B-2011 ND 1ug/L0.400.50
Ethylbenzene 100-41-4 SM 6200B-2011 ND 1ug/L0.400.50
Hexachlorobutadiene 87-68-3 SM 6200B-2011 ND 1ug/L0.400.50
Isopropylbenzene (Cumene)98-82-8 SM 6200B-2011 ND 1ug/L0.400.50
p-Isopropyltoluene (p-Cymene)99-87-6 SM 6200B-2011 ND 1ug/L0.400.50
Methyl tertiary butyl ether (MTBE)1634-04-4 SM 6200B-2011 ND 1ug/L0.400.50
Methylene chloride 75-09-2 SM 6200B-2011 ND 1ug/L0.400.50
Naphthalene 91-20-3 SM 6200B-2011 ND 1ug/L0.400.50
n-Propylbenzene 103-65-1 SM 6200B-2011 ND 1ug/L0.400.50
Styrene 100-42-5 SM 6200B-2011 ND 1ug/L0.400.50
J = Estimated result < LOQ and > DL_
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range
P = The RPD between two GC columns exceeds 40%ND = Not detected at or above the DL N = Recovery is out of criteria
H = Out of holding time
Q = Surrogate failure
L = LCS/LCSD failure
S = MS/MSD failure
DL = Detection Limit
W = Reported on wet weight basis
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Page 20 of 42
Volatile Organic Compounds by GC/MS
Description:Matrix:
Date Received:
Client:Laboratory ID:
Date Sampled:
Terracon Consultants, Inc.
MW-12
WG16035-008
07/14/2021 1150
07/16/2021
Aqueous
Project Name: Blalock Fina
Project Number: 70149672B
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 SM 6200B-SM 6200B-2011 1 07/20/2021 1208 BWS 99424
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 103 70-130
Bromofluorobenzene 96 70-130
Toluene-d8 107 70-130
J = Estimated result < LOQ and > DL_
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range
P = The RPD between two GC columns exceeds 40%ND = Not detected at or above the DL N = Recovery is out of criteria
H = Out of holding time
Q = Surrogate failure
L = LCS/LCSD failure
S = MS/MSD failure
DL = Detection Limit
W = Reported on wet weight basis
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Page 21 of 42
Volatile Organic Compounds by GC/MS
Description:Matrix:
Date Received:
Client:Laboratory ID:
Date Sampled:
Terracon Consultants, Inc.
RW-1
WG16035-009
07/14/2021 1236
07/16/2021
Aqueous
Project Name: Blalock Fina
Project Number: 70149672B
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 SM 6200B-SM 6200B-2011 1 07/20/2021 1440 BWS 99424
AnalyticalCAS
Parameter Number Method Result Q LOQ Units Run DL
Benzene 71-43-2 SM 6200B-2011 13 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 2.7 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 0.94 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 9.4 1ug/L0.400.50
n-Propylbenzene 103-65-1 SM 6200B-2011 ND 1ug/L0.400.50
Styrene 100-42-5 SM 6200B-2011 ND 1ug/L0.400.50
J = Estimated result < LOQ and > DL_
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range
P = The RPD between two GC columns exceeds 40%ND = Not detected at or above the DL N = Recovery is out of criteria
H = Out of holding time
Q = Surrogate failure
L = LCS/LCSD failure
S = MS/MSD failure
DL = Detection Limit
W = Reported on wet weight basis
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Page 22 of 42
Volatile Organic Compounds by GC/MS
Description:Matrix:
Date Received:
Client:Laboratory ID:
Date Sampled:
Terracon Consultants, Inc.
RW-1
WG16035-009
07/14/2021 1236
07/16/2021
Aqueous
Project Name: Blalock Fina
Project Number: 70149672B
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 SM 6200B-SM 6200B-2011 1 07/20/2021 1440 BWS 99424
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 103 70-130
Bromofluorobenzene 93 70-130
Toluene-d8 105 70-130
J = Estimated result < LOQ and > DL_
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range
P = The RPD between two GC columns exceeds 40%ND = Not detected at or above the DL N = Recovery is out of criteria
H = Out of holding time
Q = Surrogate failure
L = LCS/LCSD failure
S = MS/MSD failure
DL = Detection Limit
W = Reported on wet weight basis
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Page 23 of 42
Volatile Organic Compounds by GC/MS
Description:Matrix:
Date Received:
Client:Laboratory ID:
Date Sampled:
Terracon Consultants, Inc.
RW-2
WG16035-010
07/14/2021 1322
07/16/2021
Aqueous
Project Name: Blalock Fina
Project Number: 70149672B
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 SM 6200B-SM 6200B-2011 50 07/20/2021 1805 BWS 99424
AnalyticalCAS
Parameter Number Method Result Q LOQ Units Run DL
Benzene 71-43-2 SM 6200B-2011 350 1ug/L2025
Bromobenzene 108-86-1 SM 6200B-2011 ND 1ug/L2025
Bromochloromethane 74-97-5 SM 6200B-2011 ND 1ug/L2025
Bromodichloromethane 75-27-4 SM 6200B-2011 ND 1ug/L2025
Bromoform 75-25-2 SM 6200B-2011 ND 1ug/L2025
Bromomethane (Methyl bromide)74-83-9 SM 6200B-2011 ND 1ug/L2025
n-Butylbenzene 104-51-8 SM 6200B-2011 ND 1ug/L2025
sec-Butylbenzene 135-98-8 SM 6200B-2011 ND 1ug/L2025
tert-Butylbenzene 98-06-6 SM 6200B-2011 ND 1ug/L2025
Carbon tetrachloride 56-23-5 SM 6200B-2011 ND 1ug/L2025
Chlorobenzene 108-90-7 SM 6200B-2011 ND 1ug/L2025
Chloroethane 75-00-3 SM 6200B-2011 ND 1ug/L2025
Chloroform 67-66-3 SM 6200B-2011 ND 1ug/L2025
Chloromethane (Methyl chloride)74-87-3 SM 6200B-2011 ND 1ug/L2025
2-Chlorotoluene 95-49-8 SM 6200B-2011 ND 1ug/L2025
4-Chlorotoluene 106-43-4 SM 6200B-2011 ND 1ug/L2025
Dibromochloromethane 124-48-1 SM 6200B-2011 ND 1ug/L2025
1,2-Dibromoethane (EDB)106-93-4 SM 6200B-2011 ND 1ug/L2025
Dibromomethane (Methylene bromide)74-95-3 SM 6200B-2011 ND 1ug/L2025
1,2-Dichlorobenzene 95-50-1 SM 6200B-2011 ND 1ug/L2025
1,3-Dichlorobenzene 541-73-1 SM 6200B-2011 ND 1ug/L2025
1,4-Dichlorobenzene 106-46-7 SM 6200B-2011 ND 1ug/L2025
Dichlorodifluoromethane 75-71-8 SM 6200B-2011 ND 1ug/L2025
1,1-Dichloroethane 75-34-3 SM 6200B-2011 ND 1ug/L2025
1,2-Dichloroethane 107-06-2 SM 6200B-2011 ND 1ug/L2025
1,1-Dichloroethene 75-35-4 SM 6200B-2011 ND 1ug/L2025
cis-1,2-Dichloroethene 156-59-2 SM 6200B-2011 ND 1ug/L2025
trans-1,2-Dichloroethene 156-60-5 SM 6200B-2011 ND 1ug/L2025
1,2-Dichloropropane 78-87-5 SM 6200B-2011 ND 1ug/L2025
1,3-Dichloropropane 142-28-9 SM 6200B-2011 ND 1ug/L2025
2,2-Dichloropropane 594-20-7 SM 6200B-2011 ND 1ug/L2025
1,1-Dichloropropene 563-58-6 SM 6200B-2011 ND 1ug/L2025
cis-1,3-Dichloropropene 10061-01-5 SM 6200B-2011 ND 1ug/L2025
trans-1,3-Dichloropropene 10061-02-6 SM 6200B-2011 ND 1ug/L2025
Diisopropyl ether (IPE)108-20-3 SM 6200B-2011 ND 1ug/L2025
Ethylbenzene 100-41-4 SM 6200B-2011 470 1ug/L2025
Hexachlorobutadiene 87-68-3 SM 6200B-2011 ND 1ug/L2025
Isopropylbenzene (Cumene)98-82-8 SM 6200B-2011 ND 1ug/L2025
p-Isopropyltoluene (p-Cymene)99-87-6 SM 6200B-2011 ND 1ug/L2025
Methyl tertiary butyl ether (MTBE)1634-04-4 SM 6200B-2011 ND 1ug/L2025
Methylene chloride 75-09-2 SM 6200B-2011 ND 1ug/L2025
Naphthalene 91-20-3 SM 6200B-2011 170 1ug/L2025
n-Propylbenzene 103-65-1 SM 6200B-2011 52 1ug/L2025
Styrene 100-42-5 SM 6200B-2011 ND 1ug/L2025
J = Estimated result < LOQ and > DL_
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range
P = The RPD between two GC columns exceeds 40%ND = Not detected at or above the DL N = Recovery is out of criteria
H = Out of holding time
Q = Surrogate failure
L = LCS/LCSD failure
S = MS/MSD failure
DL = Detection Limit
W = Reported on wet weight basis
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Page 24 of 42
Volatile Organic Compounds by GC/MS
Description:Matrix:
Date Received:
Client:Laboratory ID:
Date Sampled:
Terracon Consultants, Inc.
RW-2
WG16035-010
07/14/2021 1322
07/16/2021
Aqueous
Project Name: Blalock Fina
Project Number: 70149672B
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 SM 6200B-SM 6200B-2011 50 07/20/2021 1805 BWS 99424
AnalyticalCAS
Parameter Number Method Result Q LOQ Units Run DL
1,1,1,2-Tetrachloroethane 630-20-6 SM 6200B-2011 ND 1ug/L2025
1,1,2,2-Tetrachloroethane 79-34-5 SM 6200B-2011 ND 1ug/L2025
Tetrachloroethene 127-18-4 SM 6200B-2011 ND 1ug/L2025
Toluene 108-88-3 SM 6200B-2011 3800 1ug/L2025
1,1,2-Trichloro-1,2,2-Trifluoroethane 76-13-1 SM 6200B-2011 ND 1ug/L2025
1,2,3-Trichlorobenzene 87-61-6 SM 6200B-2011 ND 1ug/L2025
1,2,4-Trichlorobenzene 120-82-1 SM 6200B-2011 ND 1ug/L2025
1,1,1-Trichloroethane 71-55-6 SM 6200B-2011 ND 1ug/L2025
1,1,2-Trichloroethane 79-00-5 SM 6200B-2011 ND 1ug/L2025
Trichloroethene 79-01-6 SM 6200B-2011 ND 1ug/L2025
Trichlorofluoromethane 75-69-4 SM 6200B-2011 ND 1ug/L2025
1,2,3-Trichloropropane 96-18-4 SM 6200B-2011 ND 1ug/L2025
1,3,5-Trimethylbenzene (Mesitylene)108-67-8 SM 6200B-2011 140 1ug/L2025
1,2,4-Trimethylbenzene 95-63-6 SM 6200B-2011 500 1ug/L2025
Vinyl chloride 75-01-4 SM 6200B-2011 ND 1ug/L2025
m+p - Xylenes 179601-23-1 SM 6200B-2011 1800 1ug/L2025
o - Xylenes 95-47-6 SM 6200B-2011 1100 1ug/L2025
AcceptanceRun 1
Surrogate Q % Recovery Limits
1,2-Dichloroethane-d4 102 70-130
Bromofluorobenzene 105 70-130
Toluene-d8 110 70-130
J = Estimated result < LOQ and > DL_
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range
P = The RPD between two GC columns exceeds 40%ND = Not detected at or above the DL N = Recovery is out of criteria
H = Out of holding time
Q = Surrogate failure
L = LCS/LCSD failure
S = MS/MSD failure
DL = Detection Limit
W = Reported on wet weight basis
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Page 25 of 42
Volatile Organic Compounds by GC/MS
Description:Matrix:
Date Received:
Client:Laboratory ID:
Date Sampled:
Terracon Consultants, Inc.
VEW-1
WG16035-011
07/14/2021 1210
07/16/2021
Aqueous
Project Name: Blalock Fina
Project Number: 70149672B
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 SM 6200B-SM 6200B-2011 10 07/20/2021 1740 BWS 99424
AnalyticalCAS
Parameter Number Method Result Q LOQ Units Run DL
Benzene 71-43-2 SM 6200B-2011 470 1ug/L4.05.0
Bromobenzene 108-86-1 SM 6200B-2011 ND 1ug/L4.05.0
Bromochloromethane 74-97-5 SM 6200B-2011 ND 1ug/L4.05.0
Bromodichloromethane 75-27-4 SM 6200B-2011 ND 1ug/L4.05.0
Bromoform 75-25-2 SM 6200B-2011 ND 1ug/L4.05.0
Bromomethane (Methyl bromide)74-83-9 SM 6200B-2011 ND 1ug/L4.05.0
n-Butylbenzene 104-51-8 SM 6200B-2011 22 1ug/L4.05.0
sec-Butylbenzene 135-98-8 SM 6200B-2011 7.6 1ug/L4.05.0
tert-Butylbenzene 98-06-6 SM 6200B-2011 ND 1ug/L4.05.0
Carbon tetrachloride 56-23-5 SM 6200B-2011 ND 1ug/L4.05.0
Chlorobenzene 108-90-7 SM 6200B-2011 ND 1ug/L4.05.0
Chloroethane 75-00-3 SM 6200B-2011 ND 1ug/L4.05.0
Chloroform 67-66-3 SM 6200B-2011 ND 1ug/L4.05.0
Chloromethane (Methyl chloride)74-87-3 SM 6200B-2011 ND 1ug/L4.05.0
2-Chlorotoluene 95-49-8 SM 6200B-2011 ND 1ug/L4.05.0
4-Chlorotoluene 106-43-4 SM 6200B-2011 ND 1ug/L4.05.0
Dibromochloromethane 124-48-1 SM 6200B-2011 ND 1ug/L4.05.0
1,2-Dibromoethane (EDB)106-93-4 SM 6200B-2011 ND 1ug/L4.05.0
Dibromomethane (Methylene bromide)74-95-3 SM 6200B-2011 ND 1ug/L4.05.0
1,2-Dichlorobenzene 95-50-1 SM 6200B-2011 ND 1ug/L4.05.0
1,3-Dichlorobenzene 541-73-1 SM 6200B-2011 ND 1ug/L4.05.0
1,4-Dichlorobenzene 106-46-7 SM 6200B-2011 ND 1ug/L4.05.0
Dichlorodifluoromethane 75-71-8 SM 6200B-2011 ND 1ug/L4.05.0
1,1-Dichloroethane 75-34-3 SM 6200B-2011 ND 1ug/L4.05.0
1,2-Dichloroethane 107-06-2 SM 6200B-2011 ND 1ug/L4.05.0
1,1-Dichloroethene 75-35-4 SM 6200B-2011 ND 1ug/L4.05.0
cis-1,2-Dichloroethene 156-59-2 SM 6200B-2011 ND 1ug/L4.05.0
trans-1,2-Dichloroethene 156-60-5 SM 6200B-2011 ND 1ug/L4.05.0
1,2-Dichloropropane 78-87-5 SM 6200B-2011 ND 1ug/L4.05.0
1,3-Dichloropropane 142-28-9 SM 6200B-2011 ND 1ug/L4.05.0
2,2-Dichloropropane 594-20-7 SM 6200B-2011 ND 1ug/L4.05.0
1,1-Dichloropropene 563-58-6 SM 6200B-2011 ND 1ug/L4.05.0
cis-1,3-Dichloropropene 10061-01-5 SM 6200B-2011 ND 1ug/L4.05.0
trans-1,3-Dichloropropene 10061-02-6 SM 6200B-2011 ND 1ug/L4.05.0
Diisopropyl ether (IPE)108-20-3 SM 6200B-2011 ND 1ug/L4.05.0
Ethylbenzene 100-41-4 SM 6200B-2011 1400 1ug/L4.05.0
Hexachlorobutadiene 87-68-3 SM 6200B-2011 ND 1ug/L4.05.0
Isopropylbenzene (Cumene)98-82-8 SM 6200B-2011 61 1ug/L4.05.0
p-Isopropyltoluene (p-Cymene)99-87-6 SM 6200B-2011 4.5 J 1ug/L4.05.0
Methyl tertiary butyl ether (MTBE)1634-04-4 SM 6200B-2011 ND 1ug/L4.05.0
Methylene chloride 75-09-2 SM 6200B-2011 ND 1ug/L4.05.0
Naphthalene 91-20-3 SM 6200B-2011 510 1ug/L4.05.0
n-Propylbenzene 103-65-1 SM 6200B-2011 190 1ug/L4.05.0
Styrene 100-42-5 SM 6200B-2011 ND 1ug/L4.05.0
J = Estimated result < LOQ and > DL_
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range
P = The RPD between two GC columns exceeds 40%ND = Not detected at or above the DL N = Recovery is out of criteria
H = Out of holding time
Q = Surrogate failure
L = LCS/LCSD failure
S = MS/MSD failure
DL = Detection Limit
W = Reported on wet weight basis
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Page 26 of 42
Volatile Organic Compounds by GC/MS
Description:Matrix:
Date Received:
Client:Laboratory ID:
Date Sampled:
Terracon Consultants, Inc.
VEW-1
WG16035-011
07/14/2021 1210
07/16/2021
Aqueous
Project Name: Blalock Fina
Project Number: 70149672B
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 SM 6200B-SM 6200B-2011 10 07/20/2021 1740 BWS 99424
AnalyticalCAS
Parameter Number Method Result Q LOQ Units Run DL
1,1,1,2-Tetrachloroethane 630-20-6 SM 6200B-2011 ND 1ug/L4.05.0
1,1,2,2-Tetrachloroethane 79-34-5 SM 6200B-2011 ND 1ug/L4.05.0
Tetrachloroethene 127-18-4 SM 6200B-2011 ND 1ug/L4.05.0
Toluene 108-88-3 SM 6200B-2011 1000 1ug/L4.05.0
1,1,2-Trichloro-1,2,2-Trifluoroethane 76-13-1 SM 6200B-2011 ND 1ug/L4.05.0
1,2,3-Trichlorobenzene 87-61-6 SM 6200B-2011 ND 1ug/L4.05.0
1,2,4-Trichlorobenzene 120-82-1 SM 6200B-2011 ND 1ug/L4.05.0
1,1,1-Trichloroethane 71-55-6 SM 6200B-2011 ND 1ug/L4.05.0
1,1,2-Trichloroethane 79-00-5 SM 6200B-2011 ND 1ug/L4.05.0
Trichloroethene 79-01-6 SM 6200B-2011 ND 1ug/L4.05.0
Trichlorofluoromethane 75-69-4 SM 6200B-2011 ND 1ug/L4.05.0
1,2,3-Trichloropropane 96-18-4 SM 6200B-2011 ND 1ug/L4.05.0
1,3,5-Trimethylbenzene (Mesitylene)108-67-8 SM 6200B-2011 130 1ug/L4.05.0
1,2,4-Trimethylbenzene 95-63-6 SM 6200B-2011 520 1ug/L4.05.0
Vinyl chloride 75-01-4 SM 6200B-2011 ND 1ug/L4.05.0
m+p - Xylenes 179601-23-1 SM 6200B-2011 900 1ug/L4.05.0
o - Xylenes 95-47-6 SM 6200B-2011 190 1ug/L4.05.0
AcceptanceRun 1
Surrogate Q % Recovery Limits
1,2-Dichloroethane-d4 105 70-130
Bromofluorobenzene 109 70-130
Toluene-d8 110 70-130
J = Estimated result < LOQ and > DL_
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range
P = The RPD between two GC columns exceeds 40%ND = Not detected at or above the DL N = Recovery is out of criteria
H = Out of holding time
Q = Surrogate failure
L = LCS/LCSD failure
S = MS/MSD failure
DL = Detection Limit
W = Reported on wet weight basis
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Page 27 of 42
Volatile Organic Compounds by GC/MS
Description:Matrix:
Date Received:
Client:Laboratory ID:
Date Sampled:
Terracon Consultants, Inc.
VEW-2
WG16035-012
07/14/2021 1240
07/16/2021
Aqueous
Project Name: Blalock Fina
Project Number: 70149672B
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 SM 6200B-SM 6200B-2011 1 07/20/2021 1506 BWS 99424
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 0.77 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 0.83 1ug/L0.400.50
n-Propylbenzene 103-65-1 SM 6200B-2011 ND 1ug/L0.400.50
Styrene 100-42-5 SM 6200B-2011 ND 1ug/L0.400.50
J = Estimated result < LOQ and > DL_
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range
P = The RPD between two GC columns exceeds 40%ND = Not detected at or above the DL N = Recovery is out of criteria
H = Out of holding time
Q = Surrogate failure
L = LCS/LCSD failure
S = MS/MSD failure
DL = Detection Limit
W = Reported on wet weight basis
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Page 28 of 42
Volatile Organic Compounds by GC/MS
Description:Matrix:
Date Received:
Client:Laboratory ID:
Date Sampled:
Terracon Consultants, Inc.
VEW-2
WG16035-012
07/14/2021 1240
07/16/2021
Aqueous
Project Name: Blalock Fina
Project Number: 70149672B
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 SM 6200B-SM 6200B-2011 1 07/20/2021 1506 BWS 99424
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 104 70-130
Bromofluorobenzene 100 70-130
Toluene-d8 110 70-130
J = Estimated result < LOQ and > DL_
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range
P = The RPD between two GC columns exceeds 40%ND = Not detected at or above the DL N = Recovery is out of criteria
H = Out of holding time
Q = Surrogate failure
L = LCS/LCSD failure
S = MS/MSD failure
DL = Detection Limit
W = Reported on wet weight basis
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Page 29 of 42
Volatile Organic Compounds by GC/MS
Description:Matrix:
Date Received:
Client:Laboratory ID:
Date Sampled:
Terracon Consultants, Inc.
FB-01
WG16035-013
07/14/2021 1440
07/16/2021
Aqueous
Project Name: Blalock Fina
Project Number: 70149672B
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 SM 6200B-SM 6200B-2011 1 07/20/2021 1117 BWS 99424
AnalyticalCAS
Parameter Number Method Result Q LOQ Units Run DL
Benzene 71-43-2 SM 6200B-2011 ND 1ug/L0.400.50
Bromobenzene 108-86-1 SM 6200B-2011 ND 1ug/L0.400.50
Bromochloromethane 74-97-5 SM 6200B-2011 ND 1ug/L0.400.50
Bromodichloromethane 75-27-4 SM 6200B-2011 ND 1ug/L0.400.50
Bromoform 75-25-2 SM 6200B-2011 ND 1ug/L0.400.50
Bromomethane (Methyl bromide)74-83-9 SM 6200B-2011 ND 1ug/L0.400.50
n-Butylbenzene 104-51-8 SM 6200B-2011 ND 1ug/L0.400.50
sec-Butylbenzene 135-98-8 SM 6200B-2011 ND 1ug/L0.400.50
tert-Butylbenzene 98-06-6 SM 6200B-2011 ND 1ug/L0.400.50
Carbon tetrachloride 56-23-5 SM 6200B-2011 ND 1ug/L0.400.50
Chlorobenzene 108-90-7 SM 6200B-2011 ND 1ug/L0.400.50
Chloroethane 75-00-3 SM 6200B-2011 ND 1ug/L0.400.50
Chloroform 67-66-3 SM 6200B-2011 ND 1ug/L0.400.50
Chloromethane (Methyl chloride)74-87-3 SM 6200B-2011 ND 1ug/L0.400.50
2-Chlorotoluene 95-49-8 SM 6200B-2011 ND 1ug/L0.400.50
4-Chlorotoluene 106-43-4 SM 6200B-2011 ND 1ug/L0.400.50
Dibromochloromethane 124-48-1 SM 6200B-2011 ND 1ug/L0.400.50
1,2-Dibromoethane (EDB)106-93-4 SM 6200B-2011 ND 1ug/L0.400.50
Dibromomethane (Methylene bromide)74-95-3 SM 6200B-2011 ND 1ug/L0.400.50
1,2-Dichlorobenzene 95-50-1 SM 6200B-2011 ND 1ug/L0.400.50
1,3-Dichlorobenzene 541-73-1 SM 6200B-2011 ND 1ug/L0.400.50
1,4-Dichlorobenzene 106-46-7 SM 6200B-2011 ND 1ug/L0.400.50
Dichlorodifluoromethane 75-71-8 SM 6200B-2011 ND 1ug/L0.400.50
1,1-Dichloroethane 75-34-3 SM 6200B-2011 ND 1ug/L0.400.50
1,2-Dichloroethane 107-06-2 SM 6200B-2011 ND 1ug/L0.400.50
1,1-Dichloroethene 75-35-4 SM 6200B-2011 ND 1ug/L0.400.50
cis-1,2-Dichloroethene 156-59-2 SM 6200B-2011 ND 1ug/L0.400.50
trans-1,2-Dichloroethene 156-60-5 SM 6200B-2011 ND 1ug/L0.400.50
1,2-Dichloropropane 78-87-5 SM 6200B-2011 ND 1ug/L0.400.50
1,3-Dichloropropane 142-28-9 SM 6200B-2011 ND 1ug/L0.400.50
2,2-Dichloropropane 594-20-7 SM 6200B-2011 ND 1ug/L0.400.50
1,1-Dichloropropene 563-58-6 SM 6200B-2011 ND 1ug/L0.400.50
cis-1,3-Dichloropropene 10061-01-5 SM 6200B-2011 ND 1ug/L0.400.50
trans-1,3-Dichloropropene 10061-02-6 SM 6200B-2011 ND 1ug/L0.400.50
Diisopropyl ether (IPE)108-20-3 SM 6200B-2011 ND 1ug/L0.400.50
Ethylbenzene 100-41-4 SM 6200B-2011 ND 1ug/L0.400.50
Hexachlorobutadiene 87-68-3 SM 6200B-2011 ND 1ug/L0.400.50
Isopropylbenzene (Cumene)98-82-8 SM 6200B-2011 ND 1ug/L0.400.50
p-Isopropyltoluene (p-Cymene)99-87-6 SM 6200B-2011 ND 1ug/L0.400.50
Methyl tertiary butyl ether (MTBE)1634-04-4 SM 6200B-2011 ND 1ug/L0.400.50
Methylene chloride 75-09-2 SM 6200B-2011 ND 1ug/L0.400.50
Naphthalene 91-20-3 SM 6200B-2011 ND 1ug/L0.400.50
n-Propylbenzene 103-65-1 SM 6200B-2011 ND 1ug/L0.400.50
Styrene 100-42-5 SM 6200B-2011 ND 1ug/L0.400.50
J = Estimated result < LOQ and > DL_
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range
P = The RPD between two GC columns exceeds 40%ND = Not detected at or above the DL N = Recovery is out of criteria
H = Out of holding time
Q = Surrogate failure
L = LCS/LCSD failure
S = MS/MSD failure
DL = Detection Limit
W = Reported on wet weight basis
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Page 30 of 42
Volatile Organic Compounds by GC/MS
Description:Matrix:
Date Received:
Client:Laboratory ID:
Date Sampled:
Terracon Consultants, Inc.
FB-01
WG16035-013
07/14/2021 1440
07/16/2021
Aqueous
Project Name: Blalock Fina
Project Number: 70149672B
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 SM 6200B-SM 6200B-2011 1 07/20/2021 1117 BWS 99424
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 101 70-130
Bromofluorobenzene 88 70-130
Toluene-d8 103 70-130
J = Estimated result < LOQ and > DL_
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range
P = The RPD between two GC columns exceeds 40%ND = Not detected at or above the DL N = Recovery is out of criteria
H = Out of holding time
Q = Surrogate failure
L = LCS/LCSD failure
S = MS/MSD failure
DL = Detection Limit
W = Reported on wet weight basis
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Page 31 of 42
Volatile Organic Compounds by GC/MS
Description:Matrix:
Date Received:
Client:Laboratory ID:
Date Sampled:
Terracon Consultants, Inc.
TB-01
WG16035-014
07/14/2021
07/16/2021
Aqueous
Project Name: Blalock Fina
Project Number: 70149672B
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 SM 6200B-SM 6200B-2011 1 07/20/2021 1143 BWS 99424
AnalyticalCAS
Parameter Number Method Result Q LOQ Units Run DL
Benzene 71-43-2 SM 6200B-2011 ND 1ug/L0.400.50
Bromobenzene 108-86-1 SM 6200B-2011 ND 1ug/L0.400.50
Bromochloromethane 74-97-5 SM 6200B-2011 ND 1ug/L0.400.50
Bromodichloromethane 75-27-4 SM 6200B-2011 ND 1ug/L0.400.50
Bromoform 75-25-2 SM 6200B-2011 ND 1ug/L0.400.50
Bromomethane (Methyl bromide)74-83-9 SM 6200B-2011 ND 1ug/L0.400.50
n-Butylbenzene 104-51-8 SM 6200B-2011 ND 1ug/L0.400.50
sec-Butylbenzene 135-98-8 SM 6200B-2011 ND 1ug/L0.400.50
tert-Butylbenzene 98-06-6 SM 6200B-2011 ND 1ug/L0.400.50
Carbon tetrachloride 56-23-5 SM 6200B-2011 ND 1ug/L0.400.50
Chlorobenzene 108-90-7 SM 6200B-2011 ND 1ug/L0.400.50
Chloroethane 75-00-3 SM 6200B-2011 ND 1ug/L0.400.50
Chloroform 67-66-3 SM 6200B-2011 ND 1ug/L0.400.50
Chloromethane (Methyl chloride)74-87-3 SM 6200B-2011 ND 1ug/L0.400.50
2-Chlorotoluene 95-49-8 SM 6200B-2011 ND 1ug/L0.400.50
4-Chlorotoluene 106-43-4 SM 6200B-2011 ND 1ug/L0.400.50
Dibromochloromethane 124-48-1 SM 6200B-2011 ND 1ug/L0.400.50
1,2-Dibromoethane (EDB)106-93-4 SM 6200B-2011 ND 1ug/L0.400.50
Dibromomethane (Methylene bromide)74-95-3 SM 6200B-2011 ND 1ug/L0.400.50
1,2-Dichlorobenzene 95-50-1 SM 6200B-2011 ND 1ug/L0.400.50
1,3-Dichlorobenzene 541-73-1 SM 6200B-2011 ND 1ug/L0.400.50
1,4-Dichlorobenzene 106-46-7 SM 6200B-2011 ND 1ug/L0.400.50
Dichlorodifluoromethane 75-71-8 SM 6200B-2011 ND 1ug/L0.400.50
1,1-Dichloroethane 75-34-3 SM 6200B-2011 ND 1ug/L0.400.50
1,2-Dichloroethane 107-06-2 SM 6200B-2011 ND 1ug/L0.400.50
1,1-Dichloroethene 75-35-4 SM 6200B-2011 ND 1ug/L0.400.50
cis-1,2-Dichloroethene 156-59-2 SM 6200B-2011 ND 1ug/L0.400.50
trans-1,2-Dichloroethene 156-60-5 SM 6200B-2011 ND 1ug/L0.400.50
1,2-Dichloropropane 78-87-5 SM 6200B-2011 ND 1ug/L0.400.50
1,3-Dichloropropane 142-28-9 SM 6200B-2011 ND 1ug/L0.400.50
2,2-Dichloropropane 594-20-7 SM 6200B-2011 ND 1ug/L0.400.50
1,1-Dichloropropene 563-58-6 SM 6200B-2011 ND 1ug/L0.400.50
cis-1,3-Dichloropropene 10061-01-5 SM 6200B-2011 ND 1ug/L0.400.50
trans-1,3-Dichloropropene 10061-02-6 SM 6200B-2011 ND 1ug/L0.400.50
Diisopropyl ether (IPE)108-20-3 SM 6200B-2011 ND 1ug/L0.400.50
Ethylbenzene 100-41-4 SM 6200B-2011 ND 1ug/L0.400.50
Hexachlorobutadiene 87-68-3 SM 6200B-2011 ND 1ug/L0.400.50
Isopropylbenzene (Cumene)98-82-8 SM 6200B-2011 ND 1ug/L0.400.50
p-Isopropyltoluene (p-Cymene)99-87-6 SM 6200B-2011 ND 1ug/L0.400.50
Methyl tertiary butyl ether (MTBE)1634-04-4 SM 6200B-2011 ND 1ug/L0.400.50
Methylene chloride 75-09-2 SM 6200B-2011 ND 1ug/L0.400.50
Naphthalene 91-20-3 SM 6200B-2011 ND 1ug/L0.400.50
n-Propylbenzene 103-65-1 SM 6200B-2011 ND 1ug/L0.400.50
Styrene 100-42-5 SM 6200B-2011 ND 1ug/L0.400.50
J = Estimated result < LOQ and > DL_
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range
P = The RPD between two GC columns exceeds 40%ND = Not detected at or above the DL N = Recovery is out of criteria
H = Out of holding time
Q = Surrogate failure
L = LCS/LCSD failure
S = MS/MSD failure
DL = Detection Limit
W = Reported on wet weight basis
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Page 32 of 42
Volatile Organic Compounds by GC/MS
Description:Matrix:
Date Received:
Client:Laboratory ID:
Date Sampled:
Terracon Consultants, Inc.
TB-01
WG16035-014
07/14/2021
07/16/2021
Aqueous
Project Name: Blalock Fina
Project Number: 70149672B
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 SM 6200B-SM 6200B-2011 1 07/20/2021 1143 BWS 99424
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 104 70-130
Bromofluorobenzene 95 70-130
Toluene-d8 104 70-130
J = Estimated result < LOQ and > DL_
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range
P = The RPD between two GC columns exceeds 40%ND = Not detected at or above the DL N = Recovery is out of criteria
H = Out of holding time
Q = Surrogate failure
L = LCS/LCSD failure
S = MS/MSD failure
DL = Detection Limit
W = Reported on wet weight basis
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Page 33 of 42
QC Summary
QC Data for Lot Number: WG16035
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Page 34 of 42
Volatile Organic Compounds by GC/MS - MB
Batch:Prep Method:
Sample ID:WQ99424-001
99424 SM 6200B-2011
Analytical Method:SM 6200B-2011
Matrix:Aqueous
Parameter Result Q LOQ DL Units Analysis DateDil
Benzene ND 07/20/2021 09470.50 0.40 ug/L1
Bromobenzene ND 07/20/2021 09470.50 0.40 ug/L1
Bromochloromethane ND 07/20/2021 09470.50 0.40 ug/L1
Bromodichloromethane ND 07/20/2021 09470.50 0.40 ug/L1
Bromoform ND 07/20/2021 09470.50 0.40 ug/L1
Bromomethane (Methyl bromide)ND 07/20/2021 09470.50 0.40 ug/L1
n-Butylbenzene ND 07/20/2021 09470.50 0.40 ug/L1
sec-Butylbenzene ND 07/20/2021 09470.50 0.40 ug/L1
tert-Butylbenzene ND 07/20/2021 09470.50 0.40 ug/L1
Carbon tetrachloride ND 07/20/2021 09470.50 0.40 ug/L1
Chlorobenzene ND 07/20/2021 09470.50 0.40 ug/L1
Chloroethane ND 07/20/2021 09470.50 0.40 ug/L1
Chloroform ND 07/20/2021 09470.50 0.40 ug/L1
Chloromethane (Methyl chloride)ND 07/20/2021 09470.50 0.40 ug/L1
2-Chlorotoluene ND 07/20/2021 09470.50 0.40 ug/L1
4-Chlorotoluene ND 07/20/2021 09470.50 0.40 ug/L1
Dibromochloromethane ND 07/20/2021 09470.50 0.40 ug/L1
1,2-Dibromoethane (EDB)ND 07/20/2021 09470.50 0.40 ug/L1
Dibromomethane (Methylene bromide)ND 07/20/2021 09470.50 0.40 ug/L1
1,2-Dichlorobenzene ND 07/20/2021 09470.50 0.40 ug/L1
1,3-Dichlorobenzene ND 07/20/2021 09470.50 0.40 ug/L1
1,4-Dichlorobenzene ND 07/20/2021 09470.50 0.40 ug/L1
Dichlorodifluoromethane ND 07/20/2021 09470.50 0.40 ug/L1
1,1-Dichloroethane ND 07/20/2021 09470.50 0.40 ug/L1
1,2-Dichloroethane ND 07/20/2021 09470.50 0.40 ug/L1
1,1-Dichloroethene ND 07/20/2021 09470.50 0.40 ug/L1
cis-1,2-Dichloroethene ND 07/20/2021 09470.50 0.40 ug/L1
trans-1,2-Dichloroethene ND 07/20/2021 09470.50 0.40 ug/L1
1,2-Dichloropropane ND 07/20/2021 09470.50 0.40 ug/L1
1,3-Dichloropropane ND 07/20/2021 09470.50 0.40 ug/L1
2,2-Dichloropropane ND 07/20/2021 09470.50 0.40 ug/L1
1,1-Dichloropropene ND 07/20/2021 09470.50 0.40 ug/L1
cis-1,3-Dichloropropene ND 07/20/2021 09470.50 0.40 ug/L1
trans-1,3-Dichloropropene ND 07/20/2021 09470.50 0.40 ug/L1
Diisopropyl ether (IPE)ND 07/20/2021 09470.50 0.40 ug/L1
Ethylbenzene ND 07/20/2021 09470.50 0.40 ug/L1
Hexachlorobutadiene ND 07/20/2021 09470.50 0.40 ug/L1
Isopropylbenzene (Cumene)ND 07/20/2021 09470.50 0.40 ug/L1
p-Isopropyltoluene (p-Cymene)ND 07/20/2021 09470.50 0.40 ug/L1
Methyl tertiary butyl ether (MTBE)ND 07/20/2021 09470.50 0.40 ug/L1
Methylene chloride ND 07/20/2021 09470.50 0.40 ug/L1
Naphthalene ND 07/20/2021 09470.50 0.40 ug/L1
n-Propylbenzene ND 07/20/2021 09470.50 0.40 ug/L1
Styrene ND 07/20/2021 09470.50 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: WG16035
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Page 35 of 42
Volatile Organic Compounds by GC/MS - MB
Batch:Prep Method:
Sample ID:WQ99424-001
99424 SM 6200B-2011
Analytical Method:SM 6200B-2011
Matrix:Aqueous
Parameter Result Q LOQ DL Units Analysis DateDil
1,1,1,2-Tetrachloroethane ND 07/20/2021 09470.50 0.40 ug/L1
1,1,2,2-Tetrachloroethane ND 07/20/2021 09470.50 0.40 ug/L1
Tetrachloroethene ND 07/20/2021 09470.50 0.40 ug/L1
Toluene ND 07/20/2021 09470.50 0.40 ug/L1
1,1,2-Trichloro-1,2,2-Trifluoroethane ND 07/20/2021 09470.50 0.40 ug/L1
1,2,3-Trichlorobenzene ND 07/20/2021 09470.50 0.40 ug/L1
1,2,4-Trichlorobenzene ND 07/20/2021 09470.50 0.40 ug/L1
1,1,1-Trichloroethane ND 07/20/2021 09470.50 0.40 ug/L1
1,1,2-Trichloroethane ND 07/20/2021 09470.50 0.40 ug/L1
Trichloroethene ND 07/20/2021 09470.50 0.40 ug/L1
Trichlorofluoromethane ND 07/20/2021 09470.50 0.40 ug/L1
1,2,3-Trichloropropane ND 07/20/2021 09470.50 0.40 ug/L1
1,3,5-Trimethylbenzene (Mesitylene)ND 07/20/2021 09470.50 0.40 ug/L1
1,2,4-Trimethylbenzene ND 07/20/2021 09470.50 0.40 ug/L1
Vinyl chloride ND 07/20/2021 09470.50 0.40 ug/L1
m+p - Xylenes ND 07/20/2021 09470.50 0.40 ug/L1
o - Xylenes ND 07/20/2021 09470.50 0.40 ug/L1
Surrogate Q % Rec Acceptance
Limit
1,2-Dichloroethane-d4 103 70-130
Bromofluorobenzene 98 70-130
Toluene-d8 108 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: WG16035
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Page 36 of 42
Volatile Organic Compounds by GC/MS - LCS
Batch:Prep Method:
Sample ID:WQ99424-002
99424 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 07/20/2021 08461035070-1301
Bromobenzene 52 07/20/2021 08461055070-1301
Bromochloromethane 48 07/20/2021 0846965070-1301
Bromodichloromethane 52 07/20/2021 08461035070-1301
Bromoform 45 07/20/2021 0846915070-1301
Bromomethane (Methyl bromide)49 07/20/2021 0846995060-1401
n-Butylbenzene 60 07/20/2021 08461205070-1301
sec-Butylbenzene 60 07/20/2021 08461205070-1301
tert-Butylbenzene 58 07/20/2021 08461175070-1301
Carbon tetrachloride 50 07/20/2021 08461005070-1301
Chlorobenzene 50 07/20/2021 08461015070-1301
Chloroethane 53 07/20/2021 08461055042-1631
Chloroform 49 07/20/2021 0846985070-1301
Chloromethane (Methyl chloride)51 07/20/2021 08461025020-1581
2-Chlorotoluene 55 07/20/2021 08461105070-1301
4-Chlorotoluene 57 07/20/2021 08461155070-1301
Dibromochloromethane 53 07/20/2021 08461075070-1301
1,2-Dibromoethane (EDB)53 07/20/2021 08461065070-1301
Dibromomethane (Methylene bromide)51 07/20/2021 08461015070-1301
1,2-Dichlorobenzene 51 07/20/2021 08461035070-1301
1,3-Dichlorobenzene 53 07/20/2021 08461055070-1301
1,4-Dichlorobenzene 50 07/20/2021 08461005070-1301
Dichlorodifluoromethane 59 07/20/2021 08461185060-1401
1,1-Dichloroethane 50 07/20/2021 08461005070-1301
1,2-Dichloroethane 50 07/20/2021 0846995070-1301
1,1-Dichloroethene 55 07/20/2021 08461105070-1301
cis-1,2-Dichloroethene 49 07/20/2021 0846985070-1301
trans-1,2-Dichloroethene 50 07/20/2021 08461005070-1301
1,2-Dichloropropane 52 07/20/2021 08461055070-1301
1,3-Dichloropropane 53 07/20/2021 08461055070-1301
2,2-Dichloropropane 63 07/20/2021 08461265070-1301
1,1-Dichloropropene 49 07/20/2021 0846995070-1301
cis-1,3-Dichloropropene 57 07/20/2021 08461145070-1301
trans-1,3-Dichloropropene 60 07/20/2021 08461205070-1301
Diisopropyl ether (IPE)54 07/20/2021 08461075070-1301
Ethylbenzene 54 07/20/2021 08461085070-1301
Hexachlorobutadiene 50 07/20/2021 08461005070-1301
Isopropylbenzene (Cumene)56 07/20/2021 08461125070-1301
p-Isopropyltoluene (p-Cymene)60 07/20/2021 08461205070-1301
Methyl tertiary butyl ether (MTBE)52 07/20/2021 08461055070-1301
Methylene chloride 52 07/20/2021 08461035070-1301
Naphthalene 51 07/20/2021 08461025050-1401
n-Propylbenzene 60 07/20/2021 08461205070-1301
Styrene 52 07/20/2021 08461035070-1301
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: WG16035
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Page 37 of 42
Volatile Organic Compounds by GC/MS - LCS
Batch:Prep Method:
Sample ID:WQ99424-002
99424 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 07/20/2021 08461005070-1301
1,1,2,2-Tetrachloroethane 55 07/20/2021 08461105070-1301
Tetrachloroethene 51 07/20/2021 08461025070-1301
Toluene 54 07/20/2021 08461075070-1301
1,1,2-Trichloro-1,2,2-Trifluoroethane 63 07/20/2021 08461265070-1301
1,2,3-Trichlorobenzene 53 07/20/2021 08461075070-1301
1,2,4-Trichlorobenzene 52 07/20/2021 08461045070-1301
1,1,1-Trichloroethane 52 07/20/2021 08461045070-1301
1,1,2-Trichloroethane 52 07/20/2021 08461055070-1301
Trichloroethene 49 07/20/2021 0846995070-1301
Trichlorofluoromethane 55 07/20/2021 08461105060-1401
1,2,3-Trichloropropane 55 07/20/2021 08461115070-1301
1,3,5-Trimethylbenzene (Mesitylene)59 07/20/2021 08461185070-1301
1,2,4-Trimethylbenzene 60 07/20/2021 08461195070-1301
Vinyl chloride 52 07/20/2021 08461055060-1401
m+p - Xylenes 56 07/20/2021 08461115070-1301
o - Xylenes 54 07/20/2021 08461095070-1301
Surrogate Q % Rec Acceptance
Limit
1,2-Dichloroethane-d4 88 70-130
Bromofluorobenzene 97 70-130
Toluene-d8 98 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: WG16035
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Page 38 of 42
Chain of Custody
and
Miscellaneous Documents
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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.)

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PACE ANALYTICAL SERVICES, LLC

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Page 42 of 42
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:Ethan Dinwiddie
Project Name:Blalock Fina
Project Number:70149672B
Lot Number:WH05007
Date Completed:08/23/2021
08/23/2021 4:11 PM
Approved and released by:
Project Manager II:Cathy S.Dover
Page 1 of 24
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:WH05007
This Report of Analysis contains the analytical result(s)for the sample(s)listed on the Sample Summary
following this Case Narrative.The sample receiving date is documented in the header information
associated with each sample.
All results listed in this report relate only to the samples that are contained within this report.
Sample receipt,sample analysis,and data review have been performed in accordance with the most
current approved The NELAC Institute (TNI)standards,the Pace Analytical Services,LLC ("Pace")
Laboratory Quality Manual,standard operating procedures (SOPs),and Pace policies.Any exceptions to
the TNI standards,the Laboratory Quality Manual,SOPs or policies are qualified on the results page or
discussed below.
VOA 6200B
The reanalysis for sample WH05007-001 (MW-1)was performed outside of the analytical holding time.
The sample was initially analyzed at a 200x based on screening data,but ended being over diluted.The
sample was rerun at a 1x but was out of hold time.Both sets of data have been reported.
If you have any questions regarding this report please contact the Pace Project Manager listed on the
cover page.
Page 2 of 24
PACE ANALYTICAL SERVICES, LLC
Sample Summary
Terracon Consultants, Inc.
Lot Number: WH05007

Project Name: Blalock Fina
Project Number: 70149672B
Sample Number Sample ID Matrix Date Sampled Date Received
001 08/04/2021 1200MW-1 Aqueous 08/05/2021
002 08/04/2021 1336MW-4 Aqueous 08/05/2021
003 08/04/2021 1225MW-10 Aqueous 08/05/2021
(3 samples)
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PACE ANALYTICAL SERVICES, LLC
Detection Summary
Terracon Consultants, Inc.
Lot Number: WH05007

Project Name: Blalock Fina
Project Number: 70149672B
Sample Sample ID Matrix Parameter Method Result Q Units Page
001 MW-1 Aqueous Benzene SM 6200B-10 H ug/L 7
001 MW-1 Aqueous n-Butylbenzene SM 6200B-33 H ug/L 7
001 MW-1 Aqueous sec-Butylbenzene SM 6200B-8.1 H ug/L 7
001 MW-1 Aqueous Ethylbenzene SM 6200B-440 H ug/L 7
001 MW-1 Aqueous Isopropylbenzene SM 6200B-28 H ug/L 7
001 MW-1 Aqueous p-Isopropyltoluene (p-SM 6200B-6.0 H ug/L 7
001 MW-1 Aqueous Naphthalene SM 6200B-180 H ug/L 7
001 MW-1 Aqueous n-Propylbenzene SM 6200B-80 H ug/L 7
001 MW-1 Aqueous Toluene SM 6200B-390 H ug/L 8
001 MW-1 Aqueous 1,3,5-Trimethylbenzene SM 6200B-150 H ug/L 8
001 MW-1 Aqueous 1,2,4-Trimethylbenzene SM 6200B-500 H ug/L 8
001 MW-1 Aqueous m+p - Xylenes SM 6200B-700 H ug/L 8
001 MW-1 Aqueous o - Xylenes SM 6200B-390 H ug/L 8
(13 detections)
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Volatile Organic Compounds by GC/MS
Description:Matrix:
Date Received:
Client:Laboratory ID:
Date Sampled:
Terracon Consultants, Inc.
MW-1
WH05007-001
08/04/2021 1200
08/05/2021
Aqueous
Project Name: Blalock Fina
Project Number: 70149672B
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 SM 6200B-SM 6200B-2011 200 08/12/2021 1009 JDF 11892
2 SM 6200B-SM 6200B-2011 10 08/20/2021 2006 BWS 12805
AnalyticalCAS
Parameter Number Method Result Q LOQ Units Run DL
Benzene 71-43-2 SM 6200B-2011 ND 1ug/L80100
Bromobenzene 108-86-1 SM 6200B-2011 ND 1ug/L80100
Bromochloromethane 74-97-5 SM 6200B-2011 ND 1ug/L80100
Bromodichloromethane 75-27-4 SM 6200B-2011 ND 1ug/L80100
Bromoform 75-25-2 SM 6200B-2011 ND 1ug/L80100
Bromomethane (Methyl bromide)74-83-9 SM 6200B-2011 ND 1ug/L80100
n-Butylbenzene 104-51-8 SM 6200B-2011 ND 1ug/L80100
sec-Butylbenzene 135-98-8 SM 6200B-2011 ND 1ug/L80100
tert-Butylbenzene 98-06-6 SM 6200B-2011 ND 1ug/L80100
Carbon tetrachloride 56-23-5 SM 6200B-2011 ND 1ug/L80100
Chlorobenzene 108-90-7 SM 6200B-2011 ND 1ug/L80100
Chloroethane 75-00-3 SM 6200B-2011 ND 1ug/L80100
Chloroform 67-66-3 SM 6200B-2011 ND 1ug/L80100
Chloromethane (Methyl chloride)74-87-3 SM 6200B-2011 ND 1ug/L80100
2-Chlorotoluene 95-49-8 SM 6200B-2011 ND 1ug/L80100
4-Chlorotoluene 106-43-4 SM 6200B-2011 ND 1ug/L80100
Dibromochloromethane 124-48-1 SM 6200B-2011 ND 1ug/L80100
1,2-Dibromoethane (EDB)106-93-4 SM 6200B-2011 ND 1ug/L80100
Dibromomethane (Methylene bromide)74-95-3 SM 6200B-2011 ND 1ug/L80100
1,2-Dichlorobenzene 95-50-1 SM 6200B-2011 ND 1ug/L80100
1,3-Dichlorobenzene 541-73-1 SM 6200B-2011 ND 1ug/L80100
1,4-Dichlorobenzene 106-46-7 SM 6200B-2011 ND 1ug/L80100
Dichlorodifluoromethane 75-71-8 SM 6200B-2011 ND 1ug/L80100
1,1-Dichloroethane 75-34-3 SM 6200B-2011 ND 1ug/L80100
1,2-Dichloroethane 107-06-2 SM 6200B-2011 ND 1ug/L80100
1,1-Dichloroethene 75-35-4 SM 6200B-2011 ND 1ug/L80100
cis-1,2-Dichloroethene 156-59-2 SM 6200B-2011 ND 1ug/L80100
trans-1,2-Dichloroethene 156-60-5 SM 6200B-2011 ND 1ug/L80100
1,2-Dichloropropane 78-87-5 SM 6200B-2011 ND 1ug/L80100
1,3-Dichloropropane 142-28-9 SM 6200B-2011 ND 1ug/L80100
2,2-Dichloropropane 594-20-7 SM 6200B-2011 ND 1ug/L80100
1,1-Dichloropropene 563-58-6 SM 6200B-2011 ND 1ug/L80100
cis-1,3-Dichloropropene 10061-01-5 SM 6200B-2011 ND 1ug/L80100
trans-1,3-Dichloropropene 10061-02-6 SM 6200B-2011 ND 1ug/L80100
Diisopropyl ether (IPE)108-20-3 SM 6200B-2011 ND 1ug/L80100
Ethylbenzene 100-41-4 SM 6200B-2011 470 1ug/L80100
Hexachlorobutadiene 87-68-3 SM 6200B-2011 ND 1ug/L80100
Isopropylbenzene (Cumene)98-82-8 SM 6200B-2011 ND 1ug/L80100
p-Isopropyltoluene (p-Cymene)99-87-6 SM 6200B-2011 ND 1ug/L80100
Methyl tertiary butyl ether (MTBE)1634-04-4 SM 6200B-2011 ND 1ug/L80100
Methylene chloride 75-09-2 SM 6200B-2011 ND 1ug/L80100
Naphthalene 91-20-3 SM 6200B-2011 140 1ug/L80100
n-Propylbenzene 103-65-1 SM 6200B-2011 100 1ug/L80100
J = Estimated result < LOQ and > DL_
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range
P = The RPD between two GC columns exceeds 40%ND = Not detected at or above the DL N = Recovery is out of criteria
H = Out of holding time
Q = Surrogate failure
L = LCS/LCSD failure
S = MS/MSD failure
DL = Detection Limit
W = Reported on wet weight basis
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Page 5 of 24
Volatile Organic Compounds by GC/MS
Description:Matrix:
Date Received:
Client:Laboratory ID:
Date Sampled:
Terracon Consultants, Inc.
MW-1
WH05007-001
08/04/2021 1200
08/05/2021
Aqueous
Project Name: Blalock Fina
Project Number: 70149672B
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 SM 6200B-SM 6200B-2011 200 08/12/2021 1009 JDF 11892
2 SM 6200B-SM 6200B-2011 10 08/20/2021 2006 BWS 12805
AnalyticalCAS
Parameter Number Method Result Q LOQ Units Run DL
Styrene 100-42-5 SM 6200B-2011 ND 1ug/L80100
1,1,1,2-Tetrachloroethane 630-20-6 SM 6200B-2011 ND 1ug/L80100
1,1,2,2-Tetrachloroethane 79-34-5 SM 6200B-2011 ND 1ug/L80100
Tetrachloroethene 127-18-4 SM 6200B-2011 ND 1ug/L80100
Toluene 108-88-3 SM 6200B-2011 500 1ug/L80100
1,1,2-Trichloro-1,2,2-Trifluoroethane 76-13-1 SM 6200B-2011 ND 1ug/L80100
1,2,3-Trichlorobenzene 87-61-6 SM 6200B-2011 ND 1ug/L80100
1,2,4-Trichlorobenzene 120-82-1 SM 6200B-2011 ND 1ug/L80100
1,1,1-Trichloroethane 71-55-6 SM 6200B-2011 ND 1ug/L80100
1,1,2-Trichloroethane 79-00-5 SM 6200B-2011 ND 1ug/L80100
Trichloroethene 79-01-6 SM 6200B-2011 ND 1ug/L80100
Trichlorofluoromethane 75-69-4 SM 6200B-2011 ND 1ug/L80100
1,2,3-Trichloropropane 96-18-4 SM 6200B-2011 ND 1ug/L80100
1,3,5-Trimethylbenzene (Mesitylene)108-67-8 SM 6200B-2011 140 1ug/L80100
1,2,4-Trimethylbenzene 95-63-6 SM 6200B-2011 440 1ug/L80100
Vinyl chloride 75-01-4 SM 6200B-2011 ND 1ug/L80100
m+p - Xylenes 179601-23-1 SM 6200B-2011 690 1ug/L80100
o - Xylenes 95-47-6 SM 6200B-2011 370 1ug/L80100
AcceptanceAcceptanceRun 2Run 1
Surrogate Q % Recovery Limits % Recovery LimitsQ
1,2-Dichloroethane-d4 121 70-130 H 97 70-130
Bromofluorobenzene 98 70-130 H 90 70-130
Toluene-d8 101 70-130 H 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
Q = Surrogate failure
L = LCS/LCSD failure
S = MS/MSD failure
DL = Detection Limit
W = Reported on wet weight basis
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Page 6 of 24
Volatile Organic Compounds by GC/MS
Description:Matrix:
Date Received:
Client:Laboratory ID:
Date Sampled:
Terracon Consultants, Inc.
MW-1
WH05007-001
08/04/2021 1200
08/05/2021
Aqueous
Project Name: Blalock Fina
Project Number: 70149672B
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 SM 6200B-SM 6200B-2011 200 08/12/2021 1009 JDF 11892
2 SM 6200B-SM 6200B-2011 10 08/20/2021 2006 BWS 12805
AnalyticalCAS
Parameter Number Method Result Q LOQ Units Run DL
Benzene 71-43-2 SM 6200B-2011 10 H 2ug/L4.05.0
Bromobenzene 108-86-1 SM 6200B-2011 ND H 2ug/L4.05.0
Bromochloromethane 74-97-5 SM 6200B-2011 ND H 2ug/L4.05.0
Bromodichloromethane 75-27-4 SM 6200B-2011 ND H 2ug/L4.05.0
Bromoform 75-25-2 SM 6200B-2011 ND H 2ug/L4.05.0
Bromomethane (Methyl bromide)74-83-9 SM 6200B-2011 ND H 2ug/L4.05.0
n-Butylbenzene 104-51-8 SM 6200B-2011 33 H 2ug/L4.05.0
sec-Butylbenzene 135-98-8 SM 6200B-2011 8.1 H 2ug/L4.05.0
tert-Butylbenzene 98-06-6 SM 6200B-2011 ND H 2ug/L4.05.0
Carbon tetrachloride 56-23-5 SM 6200B-2011 ND H 2ug/L4.05.0
Chlorobenzene 108-90-7 SM 6200B-2011 ND H 2ug/L4.05.0
Chloroethane 75-00-3 SM 6200B-2011 ND H 2ug/L4.05.0
Chloroform 67-66-3 SM 6200B-2011 ND H 2ug/L4.05.0
Chloromethane (Methyl chloride)74-87-3 SM 6200B-2011 ND H 2ug/L4.05.0
2-Chlorotoluene 95-49-8 SM 6200B-2011 ND H 2ug/L4.05.0
4-Chlorotoluene 106-43-4 SM 6200B-2011 ND H 2ug/L4.05.0
Dibromochloromethane 124-48-1 SM 6200B-2011 ND H 2ug/L4.05.0
1,2-Dibromoethane (EDB)106-93-4 SM 6200B-2011 ND H 2ug/L4.05.0
Dibromomethane (Methylene bromide)74-95-3 SM 6200B-2011 ND H 2ug/L4.05.0
1,2-Dichlorobenzene 95-50-1 SM 6200B-2011 ND H 2ug/L4.05.0
1,3-Dichlorobenzene 541-73-1 SM 6200B-2011 ND H 2ug/L4.05.0
1,4-Dichlorobenzene 106-46-7 SM 6200B-2011 ND H 2ug/L4.05.0
Dichlorodifluoromethane 75-71-8 SM 6200B-2011 ND H 2ug/L4.05.0
1,1-Dichloroethane 75-34-3 SM 6200B-2011 ND H 2ug/L4.05.0
1,2-Dichloroethane 107-06-2 SM 6200B-2011 ND H 2ug/L4.05.0
1,1-Dichloroethene 75-35-4 SM 6200B-2011 ND H 2ug/L4.05.0
cis-1,2-Dichloroethene 156-59-2 SM 6200B-2011 ND H 2ug/L4.05.0
trans-1,2-Dichloroethene 156-60-5 SM 6200B-2011 ND H 2ug/L4.05.0
1,2-Dichloropropane 78-87-5 SM 6200B-2011 ND H 2ug/L4.05.0
1,3-Dichloropropane 142-28-9 SM 6200B-2011 ND H 2ug/L4.05.0
2,2-Dichloropropane 594-20-7 SM 6200B-2011 ND H 2ug/L4.05.0
1,1-Dichloropropene 563-58-6 SM 6200B-2011 ND H 2ug/L4.05.0
cis-1,3-Dichloropropene 10061-01-5 SM 6200B-2011 ND H 2ug/L4.05.0
trans-1,3-Dichloropropene 10061-02-6 SM 6200B-2011 ND H 2ug/L4.05.0
Diisopropyl ether (IPE)108-20-3 SM 6200B-2011 ND H 2ug/L4.05.0
Ethylbenzene 100-41-4 SM 6200B-2011 440 H 2ug/L4.05.0
Hexachlorobutadiene 87-68-3 SM 6200B-2011 ND H 2ug/L4.05.0
Isopropylbenzene (Cumene)98-82-8 SM 6200B-2011 28 H 2ug/L4.05.0
p-Isopropyltoluene (p-Cymene)99-87-6 SM 6200B-2011 6.0 H 2ug/L4.05.0
Methyl tertiary butyl ether (MTBE)1634-04-4 SM 6200B-2011 ND H 2ug/L4.05.0
Methylene chloride 75-09-2 SM 6200B-2011 ND H 2ug/L4.05.0
Naphthalene 91-20-3 SM 6200B-2011 180 H 2ug/L4.05.0
n-Propylbenzene 103-65-1 SM 6200B-2011 80 H 2ug/L4.05.0
J = Estimated result < LOQ and > DL_
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range
P = The RPD between two GC columns exceeds 40%ND = Not detected at or above the DL N = Recovery is out of criteria
H = Out of holding time
Q = Surrogate failure
L = LCS/LCSD failure
S = MS/MSD failure
DL = Detection Limit
W = Reported on wet weight basis
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Page 7 of 24
Volatile Organic Compounds by GC/MS
Description:Matrix:
Date Received:
Client:Laboratory ID:
Date Sampled:
Terracon Consultants, Inc.
MW-1
WH05007-001
08/04/2021 1200
08/05/2021
Aqueous
Project Name: Blalock Fina
Project Number: 70149672B
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 SM 6200B-SM 6200B-2011 200 08/12/2021 1009 JDF 11892
2 SM 6200B-SM 6200B-2011 10 08/20/2021 2006 BWS 12805
AnalyticalCAS
Parameter Number Method Result Q LOQ Units Run DL
Styrene 100-42-5 SM 6200B-2011 ND H 2ug/L4.05.0
1,1,1,2-Tetrachloroethane 630-20-6 SM 6200B-2011 ND H 2ug/L4.05.0
1,1,2,2-Tetrachloroethane 79-34-5 SM 6200B-2011 ND H 2ug/L4.05.0
Tetrachloroethene 127-18-4 SM 6200B-2011 ND H 2ug/L4.05.0
Toluene 108-88-3 SM 6200B-2011 390 H 2ug/L4.05.0
1,1,2-Trichloro-1,2,2-Trifluoroethane 76-13-1 SM 6200B-2011 ND H 2ug/L4.05.0
1,2,3-Trichlorobenzene 87-61-6 SM 6200B-2011 ND H 2ug/L4.05.0
1,2,4-Trichlorobenzene 120-82-1 SM 6200B-2011 ND H 2ug/L4.05.0
1,1,1-Trichloroethane 71-55-6 SM 6200B-2011 ND H 2ug/L4.05.0
1,1,2-Trichloroethane 79-00-5 SM 6200B-2011 ND H 2ug/L4.05.0
Trichloroethene 79-01-6 SM 6200B-2011 ND H 2ug/L4.05.0
Trichlorofluoromethane 75-69-4 SM 6200B-2011 ND H 2ug/L4.05.0
1,2,3-Trichloropropane 96-18-4 SM 6200B-2011 ND H 2ug/L4.05.0
1,3,5-Trimethylbenzene (Mesitylene)108-67-8 SM 6200B-2011 150 H 2ug/L4.05.0
1,2,4-Trimethylbenzene 95-63-6 SM 6200B-2011 500 H 2ug/L4.05.0
Vinyl chloride 75-01-4 SM 6200B-2011 ND H 2ug/L4.05.0
m+p - Xylenes 179601-23-1 SM 6200B-2011 700 H 2ug/L4.05.0
o - Xylenes 95-47-6 SM 6200B-2011 390 H 2ug/L4.05.0
AcceptanceAcceptanceRun 2Run 1
Surrogate Q % Recovery Limits % Recovery LimitsQ
1,2-Dichloroethane-d4 121 70-130 H 97 70-130
Bromofluorobenzene 98 70-130 H 90 70-130
Toluene-d8 101 70-130 H 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
Q = Surrogate failure
L = LCS/LCSD failure
S = MS/MSD failure
DL = Detection Limit
W = Reported on wet weight basis
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Page 8 of 24
Volatile Organic Compounds by GC/MS
Description:Matrix:
Date Received:
Client:Laboratory ID:
Date Sampled:
Terracon Consultants, Inc.
MW-4
WH05007-002
08/04/2021 1336
08/05/2021
Aqueous
Project Name: Blalock Fina
Project Number: 70149672B
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 SM 6200B-SM 6200B-2011 1 08/12/2021 0712 JDF 11892
AnalyticalCAS
Parameter Number Method Result Q LOQ Units Run DL
Benzene 71-43-2 SM 6200B-2011 ND 1ug/L0.400.50
Bromobenzene 108-86-1 SM 6200B-2011 ND 1ug/L0.400.50
Bromochloromethane 74-97-5 SM 6200B-2011 ND 1ug/L0.400.50
Bromodichloromethane 75-27-4 SM 6200B-2011 ND 1ug/L0.400.50
Bromoform 75-25-2 SM 6200B-2011 ND 1ug/L0.400.50
Bromomethane (Methyl bromide)74-83-9 SM 6200B-2011 ND 1ug/L0.400.50
n-Butylbenzene 104-51-8 SM 6200B-2011 ND 1ug/L0.400.50
sec-Butylbenzene 135-98-8 SM 6200B-2011 ND 1ug/L0.400.50
tert-Butylbenzene 98-06-6 SM 6200B-2011 ND 1ug/L0.400.50
Carbon tetrachloride 56-23-5 SM 6200B-2011 ND 1ug/L0.400.50
Chlorobenzene 108-90-7 SM 6200B-2011 ND 1ug/L0.400.50
Chloroethane 75-00-3 SM 6200B-2011 ND 1ug/L0.400.50
Chloroform 67-66-3 SM 6200B-2011 ND 1ug/L0.400.50
Chloromethane (Methyl chloride)74-87-3 SM 6200B-2011 ND 1ug/L0.400.50
2-Chlorotoluene 95-49-8 SM 6200B-2011 ND 1ug/L0.400.50
4-Chlorotoluene 106-43-4 SM 6200B-2011 ND 1ug/L0.400.50
Dibromochloromethane 124-48-1 SM 6200B-2011 ND 1ug/L0.400.50
1,2-Dibromoethane (EDB)106-93-4 SM 6200B-2011 ND 1ug/L0.400.50
Dibromomethane (Methylene bromide)74-95-3 SM 6200B-2011 ND 1ug/L0.400.50
1,2-Dichlorobenzene 95-50-1 SM 6200B-2011 ND 1ug/L0.400.50
1,3-Dichlorobenzene 541-73-1 SM 6200B-2011 ND 1ug/L0.400.50
1,4-Dichlorobenzene 106-46-7 SM 6200B-2011 ND 1ug/L0.400.50
Dichlorodifluoromethane 75-71-8 SM 6200B-2011 ND 1ug/L0.400.50
1,1-Dichloroethane 75-34-3 SM 6200B-2011 ND 1ug/L0.400.50
1,2-Dichloroethane 107-06-2 SM 6200B-2011 ND 1ug/L0.400.50
1,1-Dichloroethene 75-35-4 SM 6200B-2011 ND 1ug/L0.400.50
cis-1,2-Dichloroethene 156-59-2 SM 6200B-2011 ND 1ug/L0.400.50
trans-1,2-Dichloroethene 156-60-5 SM 6200B-2011 ND 1ug/L0.400.50
1,2-Dichloropropane 78-87-5 SM 6200B-2011 ND 1ug/L0.400.50
1,3-Dichloropropane 142-28-9 SM 6200B-2011 ND 1ug/L0.400.50
2,2-Dichloropropane 594-20-7 SM 6200B-2011 ND 1ug/L0.400.50
1,1-Dichloropropene 563-58-6 SM 6200B-2011 ND 1ug/L0.400.50
cis-1,3-Dichloropropene 10061-01-5 SM 6200B-2011 ND 1ug/L0.400.50
trans-1,3-Dichloropropene 10061-02-6 SM 6200B-2011 ND 1ug/L0.400.50
Diisopropyl ether (IPE)108-20-3 SM 6200B-2011 ND 1ug/L0.400.50
Ethylbenzene 100-41-4 SM 6200B-2011 ND 1ug/L0.400.50
Hexachlorobutadiene 87-68-3 SM 6200B-2011 ND 1ug/L0.400.50
Isopropylbenzene (Cumene)98-82-8 SM 6200B-2011 ND 1ug/L0.400.50
p-Isopropyltoluene (p-Cymene)99-87-6 SM 6200B-2011 ND 1ug/L0.400.50
Methyl tertiary butyl ether (MTBE)1634-04-4 SM 6200B-2011 ND 1ug/L0.400.50
Methylene chloride 75-09-2 SM 6200B-2011 ND 1ug/L0.400.50
Naphthalene 91-20-3 SM 6200B-2011 ND 1ug/L0.400.50
n-Propylbenzene 103-65-1 SM 6200B-2011 ND 1ug/L0.400.50
Styrene 100-42-5 SM 6200B-2011 ND 1ug/L0.400.50
J = Estimated result < LOQ and > DL_
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range
P = The RPD between two GC columns exceeds 40%ND = Not detected at or above the DL N = Recovery is out of criteria
H = Out of holding time
Q = Surrogate failure
L = LCS/LCSD failure
S = MS/MSD failure
DL = Detection Limit
W = Reported on wet weight basis
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Page 9 of 24
Volatile Organic Compounds by GC/MS
Description:Matrix:
Date Received:
Client:Laboratory ID:
Date Sampled:
Terracon Consultants, Inc.
MW-4
WH05007-002
08/04/2021 1336
08/05/2021
Aqueous
Project Name: Blalock Fina
Project Number: 70149672B
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 SM 6200B-SM 6200B-2011 1 08/12/2021 0712 JDF 11892
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 122 70-130
Bromofluorobenzene 99 70-130
Toluene-d8 104 70-130
J = Estimated result < LOQ and > DL_
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range
P = The RPD between two GC columns exceeds 40%ND = Not detected at or above the DL N = Recovery is out of criteria
H = Out of holding time
Q = Surrogate failure
L = LCS/LCSD failure
S = MS/MSD failure
DL = Detection Limit
W = Reported on wet weight basis
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Page 10 of 24
Volatile Organic Compounds by GC/MS
Description:Matrix:
Date Received:
Client:Laboratory ID:
Date Sampled:
Terracon Consultants, Inc.
MW-10
WH05007-003
08/04/2021 1225
08/05/2021
Aqueous
Project Name: Blalock Fina
Project Number: 70149672B
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 SM 6200B-SM 6200B-2011 1 08/12/2021 0737 JDF 11892
AnalyticalCAS
Parameter Number Method Result Q LOQ Units Run DL
Benzene 71-43-2 SM 6200B-2011 ND 1ug/L0.400.50
Bromobenzene 108-86-1 SM 6200B-2011 ND 1ug/L0.400.50
Bromochloromethane 74-97-5 SM 6200B-2011 ND 1ug/L0.400.50
Bromodichloromethane 75-27-4 SM 6200B-2011 ND 1ug/L0.400.50
Bromoform 75-25-2 SM 6200B-2011 ND 1ug/L0.400.50
Bromomethane (Methyl bromide)74-83-9 SM 6200B-2011 ND 1ug/L0.400.50
n-Butylbenzene 104-51-8 SM 6200B-2011 ND 1ug/L0.400.50
sec-Butylbenzene 135-98-8 SM 6200B-2011 ND 1ug/L0.400.50
tert-Butylbenzene 98-06-6 SM 6200B-2011 ND 1ug/L0.400.50
Carbon tetrachloride 56-23-5 SM 6200B-2011 ND 1ug/L0.400.50
Chlorobenzene 108-90-7 SM 6200B-2011 ND 1ug/L0.400.50
Chloroethane 75-00-3 SM 6200B-2011 ND 1ug/L0.400.50
Chloroform 67-66-3 SM 6200B-2011 ND 1ug/L0.400.50
Chloromethane (Methyl chloride)74-87-3 SM 6200B-2011 ND 1ug/L0.400.50
2-Chlorotoluene 95-49-8 SM 6200B-2011 ND 1ug/L0.400.50
4-Chlorotoluene 106-43-4 SM 6200B-2011 ND 1ug/L0.400.50
Dibromochloromethane 124-48-1 SM 6200B-2011 ND 1ug/L0.400.50
1,2-Dibromoethane (EDB)106-93-4 SM 6200B-2011 ND 1ug/L0.400.50
Dibromomethane (Methylene bromide)74-95-3 SM 6200B-2011 ND 1ug/L0.400.50
1,2-Dichlorobenzene 95-50-1 SM 6200B-2011 ND 1ug/L0.400.50
1,3-Dichlorobenzene 541-73-1 SM 6200B-2011 ND 1ug/L0.400.50
1,4-Dichlorobenzene 106-46-7 SM 6200B-2011 ND 1ug/L0.400.50
Dichlorodifluoromethane 75-71-8 SM 6200B-2011 ND 1ug/L0.400.50
1,1-Dichloroethane 75-34-3 SM 6200B-2011 ND 1ug/L0.400.50
1,2-Dichloroethane 107-06-2 SM 6200B-2011 ND 1ug/L0.400.50
1,1-Dichloroethene 75-35-4 SM 6200B-2011 ND 1ug/L0.400.50
cis-1,2-Dichloroethene 156-59-2 SM 6200B-2011 ND 1ug/L0.400.50
trans-1,2-Dichloroethene 156-60-5 SM 6200B-2011 ND 1ug/L0.400.50
1,2-Dichloropropane 78-87-5 SM 6200B-2011 ND 1ug/L0.400.50
1,3-Dichloropropane 142-28-9 SM 6200B-2011 ND 1ug/L0.400.50
2,2-Dichloropropane 594-20-7 SM 6200B-2011 ND 1ug/L0.400.50
1,1-Dichloropropene 563-58-6 SM 6200B-2011 ND 1ug/L0.400.50
cis-1,3-Dichloropropene 10061-01-5 SM 6200B-2011 ND 1ug/L0.400.50
trans-1,3-Dichloropropene 10061-02-6 SM 6200B-2011 ND 1ug/L0.400.50
Diisopropyl ether (IPE)108-20-3 SM 6200B-2011 ND 1ug/L0.400.50
Ethylbenzene 100-41-4 SM 6200B-2011 ND 1ug/L0.400.50
Hexachlorobutadiene 87-68-3 SM 6200B-2011 ND 1ug/L0.400.50
Isopropylbenzene (Cumene)98-82-8 SM 6200B-2011 ND 1ug/L0.400.50
p-Isopropyltoluene (p-Cymene)99-87-6 SM 6200B-2011 ND 1ug/L0.400.50
Methyl tertiary butyl ether (MTBE)1634-04-4 SM 6200B-2011 ND 1ug/L0.400.50
Methylene chloride 75-09-2 SM 6200B-2011 ND 1ug/L0.400.50
Naphthalene 91-20-3 SM 6200B-2011 ND 1ug/L0.400.50
n-Propylbenzene 103-65-1 SM 6200B-2011 ND 1ug/L0.400.50
Styrene 100-42-5 SM 6200B-2011 ND 1ug/L0.400.50
J = Estimated result < LOQ and > DL_
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range
P = The RPD between two GC columns exceeds 40%ND = Not detected at or above the DL N = Recovery is out of criteria
H = Out of holding time
Q = Surrogate failure
L = LCS/LCSD failure
S = MS/MSD failure
DL = Detection Limit
W = Reported on wet weight basis
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Page 11 of 24
Volatile Organic Compounds by GC/MS
Description:Matrix:
Date Received:
Client:Laboratory ID:
Date Sampled:
Terracon Consultants, Inc.
MW-10
WH05007-003
08/04/2021 1225
08/05/2021
Aqueous
Project Name: Blalock Fina
Project Number: 70149672B
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 SM 6200B-SM 6200B-2011 1 08/12/2021 0737 JDF 11892
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 127 70-130
Bromofluorobenzene 101 70-130
Toluene-d8 100 70-130
J = Estimated result < LOQ and > DL_
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range
P = The RPD between two GC columns exceeds 40%ND = Not detected at or above the DL N = Recovery is out of criteria
H = Out of holding time
Q = Surrogate failure
L = LCS/LCSD failure
S = MS/MSD failure
DL = Detection Limit
W = Reported on wet weight basis
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Page 12 of 24
QC Summary
QC Data for Lot Number: WH05007
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 24
Volatile Organic Compounds by GC/MS - MB
Batch:Prep Method:
Sample ID:WQ11892-001
11892 SM 6200B-2011
Analytical Method:SM 6200B-2011
Matrix:Aqueous
Parameter Result Q LOQ DL Units Analysis DateDil
Benzene ND 08/12/2021 00430.50 0.40 ug/L1
Bromobenzene ND 08/12/2021 00430.50 0.40 ug/L1
Bromochloromethane ND 08/12/2021 00430.50 0.40 ug/L1
Bromodichloromethane ND 08/12/2021 00430.50 0.40 ug/L1
Bromoform ND 08/12/2021 00430.50 0.40 ug/L1
Bromomethane (Methyl bromide)ND 08/12/2021 00430.50 0.40 ug/L1
n-Butylbenzene ND 08/12/2021 00430.50 0.40 ug/L1
sec-Butylbenzene ND 08/12/2021 00430.50 0.40 ug/L1
tert-Butylbenzene ND 08/12/2021 00430.50 0.40 ug/L1
Carbon tetrachloride ND 08/12/2021 00430.50 0.40 ug/L1
Chlorobenzene ND 08/12/2021 00430.50 0.40 ug/L1
Chloroethane ND 08/12/2021 00430.50 0.40 ug/L1
Chloroform ND 08/12/2021 00430.50 0.40 ug/L1
Chloromethane (Methyl chloride)ND 08/12/2021 00430.50 0.40 ug/L1
2-Chlorotoluene ND 08/12/2021 00430.50 0.40 ug/L1
4-Chlorotoluene ND 08/12/2021 00430.50 0.40 ug/L1
Dibromochloromethane ND 08/12/2021 00430.50 0.40 ug/L1
1,2-Dibromoethane (EDB)ND 08/12/2021 00430.50 0.40 ug/L1
Dibromomethane (Methylene bromide)ND 08/12/2021 00430.50 0.40 ug/L1
1,2-Dichlorobenzene ND 08/12/2021 00430.50 0.40 ug/L1
1,3-Dichlorobenzene ND 08/12/2021 00430.50 0.40 ug/L1
1,4-Dichlorobenzene ND 08/12/2021 00430.50 0.40 ug/L1
Dichlorodifluoromethane ND 08/12/2021 00430.50 0.40 ug/L1
1,1-Dichloroethane ND 08/12/2021 00430.50 0.40 ug/L1
1,2-Dichloroethane ND 08/12/2021 00430.50 0.40 ug/L1
1,1-Dichloroethene ND 08/12/2021 00430.50 0.40 ug/L1
cis-1,2-Dichloroethene ND 08/12/2021 00430.50 0.40 ug/L1
trans-1,2-Dichloroethene ND 08/12/2021 00430.50 0.40 ug/L1
1,2-Dichloropropane ND 08/12/2021 00430.50 0.40 ug/L1
1,3-Dichloropropane ND 08/12/2021 00430.50 0.40 ug/L1
2,2-Dichloropropane ND 08/12/2021 00430.50 0.40 ug/L1
1,1-Dichloropropene ND 08/12/2021 00430.50 0.40 ug/L1
cis-1,3-Dichloropropene ND 08/12/2021 00430.50 0.40 ug/L1
trans-1,3-Dichloropropene ND 08/12/2021 00430.50 0.40 ug/L1
Diisopropyl ether (IPE)ND 08/12/2021 00430.50 0.40 ug/L1
Ethylbenzene ND 08/12/2021 00430.50 0.40 ug/L1
Hexachlorobutadiene ND 08/12/2021 00430.50 0.40 ug/L1
Isopropylbenzene (Cumene)ND 08/12/2021 00430.50 0.40 ug/L1
p-Isopropyltoluene (p-Cymene)ND 08/12/2021 00430.50 0.40 ug/L1
Methyl tertiary butyl ether (MTBE)ND 08/12/2021 00430.50 0.40 ug/L1
Methylene chloride ND 08/12/2021 00430.50 0.40 ug/L1
Naphthalene ND 08/12/2021 00430.50 0.40 ug/L1
n-Propylbenzene ND 08/12/2021 00430.50 0.40 ug/L1
Styrene ND 08/12/2021 00430.50 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: WH05007
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 24
Volatile Organic Compounds by GC/MS - MB
Batch:Prep Method:
Sample ID:WQ11892-001
11892 SM 6200B-2011
Analytical Method:SM 6200B-2011
Matrix:Aqueous
Parameter Result Q LOQ DL Units Analysis DateDil
1,1,1,2-Tetrachloroethane ND 08/12/2021 00430.50 0.40 ug/L1
1,1,2,2-Tetrachloroethane ND 08/12/2021 00430.50 0.40 ug/L1
Tetrachloroethene ND 08/12/2021 00430.50 0.40 ug/L1
Toluene ND 08/12/2021 00430.50 0.40 ug/L1
1,1,2-Trichloro-1,2,2-Trifluoroethane ND 08/12/2021 00430.50 0.40 ug/L1
1,2,3-Trichlorobenzene ND 08/12/2021 00430.50 0.40 ug/L1
1,2,4-Trichlorobenzene ND 08/12/2021 00430.50 0.40 ug/L1
1,1,1-Trichloroethane ND 08/12/2021 00430.50 0.40 ug/L1
1,1,2-Trichloroethane ND 08/12/2021 00430.50 0.40 ug/L1
Trichloroethene ND 08/12/2021 00430.50 0.40 ug/L1
Trichlorofluoromethane ND 08/12/2021 00430.50 0.40 ug/L1
1,2,3-Trichloropropane ND 08/12/2021 00430.50 0.40 ug/L1
1,3,5-Trimethylbenzene (Mesitylene)ND 08/12/2021 00430.50 0.40 ug/L1
1,2,4-Trimethylbenzene ND 08/12/2021 00430.50 0.40 ug/L1
Vinyl chloride ND 08/12/2021 00430.50 0.40 ug/L1
m+p - Xylenes ND 08/12/2021 00430.50 0.40 ug/L1
o - Xylenes ND 08/12/2021 00430.50 0.40 ug/L1
Surrogate Q % Rec Acceptance
Limit
1,2-Dichloroethane-d4 114 70-130
Bromofluorobenzene 102 70-130
Toluene-d8 101 70-130
Note:Calculations are performed before rounding to avoid round-off errors in calculated results
LOQ = Limit of Quantitation ND = Not detected at or above the DL
J = Estimated result < LOQ and > DL
N = Recovery is out of criteria
P = The RPD between two GC columns exceeds 40%
+ = RPD is out of criteria
_DL = Detection Limit
* = RSD is out of criteria
QC Data for Lot Number: WH05007
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Page 15 of 24
Volatile Organic Compounds by GC/MS - LCS
Batch:Prep Method:
Sample ID:WQ11892-002
11892 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 53 08/11/2021 23311075070-1301
Bromobenzene 48 08/11/2021 2331955070-1301
Bromochloromethane 55 08/11/2021 23311105070-1301
Bromodichloromethane 54 08/11/2021 23311075070-1301
Bromoform 49 08/11/2021 2331975070-1301
Bromomethane (Methyl bromide)64 08/11/2021 23311285060-1401
n-Butylbenzene 58 08/11/2021 23311155070-1301
sec-Butylbenzene 55 08/11/2021 23311105070-1301
tert-Butylbenzene 54 08/11/2021 23311085070-1301
Carbon tetrachloride 57 08/11/2021 23311135070-1301
Chlorobenzene 49 08/11/2021 2331985070-1301
Chloroethane 57 08/11/2021 23311145042-1631
Chloroform 58 08/11/2021 23311165070-1301
Chloromethane (Methyl chloride)61 08/11/2021 23311215020-1581
2-Chlorotoluene 52 08/11/2021 23311055070-1301
4-Chlorotoluene 51 08/11/2021 23311035070-1301
Dibromochloromethane 50 08/11/2021 23311005070-1301
1,2-Dibromoethane (EDB)49 08/11/2021 2331985070-1301
Dibromomethane (Methylene bromide)53 08/11/2021 23311055070-1301
1,2-Dichlorobenzene 50 08/11/2021 23311005070-1301
1,3-Dichlorobenzene 49 08/11/2021 2331985070-1301
1,4-Dichlorobenzene 49 08/11/2021 2331985070-1301
Dichlorodifluoromethane 54 08/11/2021 23311095060-1401
1,1-Dichloroethane 61 08/11/2021 23311225070-1301
1,2-Dichloroethane 58 08/11/2021 23311165070-1301
1,1-Dichloroethene 59 08/11/2021 23311175070-1301
cis-1,2-Dichloroethene 56 08/11/2021 23311125070-1301
trans-1,2-Dichloroethene 56 08/11/2021 23311125070-1301
1,2-Dichloropropane 52 08/11/2021 23311045070-1301
1,3-Dichloropropane 50 08/11/2021 23311015070-1301
2,2-Dichloropropane 64 08/11/2021 23311285070-1301
1,1-Dichloropropene 56 08/11/2021 23311125070-1301
cis-1,3-Dichloropropene 54 08/11/2021 23311085070-1301
trans-1,3-Dichloropropene 53 08/11/2021 23311075070-1301
Diisopropyl ether (IPE)58 08/11/2021 23311155070-1301
Ethylbenzene 51 08/11/2021 23311025070-1301
Hexachlorobutadiene 49 08/11/2021 2331995070-1301
Isopropylbenzene (Cumene)56 08/11/2021 23311125070-1301
p-Isopropyltoluene (p-Cymene)56 08/11/2021 23311125070-1301
Methyl tertiary butyl ether (MTBE)58 08/11/2021 23311165070-1301
Methylene chloride 59 08/11/2021 23311195070-1301
Naphthalene 54 08/11/2021 23311085050-1401
n-Propylbenzene 54 08/11/2021 23311095070-1301
Styrene 55 08/11/2021 23311105070-1301
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: WH05007
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 24
Volatile Organic Compounds by GC/MS - LCS
Batch:Prep Method:
Sample ID:WQ11892-002
11892 SM 6200B-2011
Analytical Method:SM 6200B-2011
Matrix:Aqueous
Parameter
Result
Q % Rec
Spike
Amount
Analysis Date
%Rec
LimitDil(ug/L)(ug/L)
1,1,1,2-Tetrachloroethane 52 08/11/2021 23311055070-1301
1,1,2,2-Tetrachloroethane 53 08/11/2021 23311055070-1301
Tetrachloroethene 48 08/11/2021 2331975070-1301
Toluene 52 08/11/2021 23311035070-1301
1,1,2-Trichloro-1,2,2-Trifluoroethane 56 08/11/2021 23311125070-1301
1,2,3-Trichlorobenzene 49 08/11/2021 2331985070-1301
1,2,4-Trichlorobenzene 49 08/11/2021 2331985070-1301
1,1,1-Trichloroethane 59 08/11/2021 23311175070-1301
1,1,2-Trichloroethane 48 08/11/2021 2331975070-1301
Trichloroethene 48 08/11/2021 2331965070-1301
Trichlorofluoromethane 60 08/11/2021 23311195060-1401
1,2,3-Trichloropropane 50 08/11/2021 2331995070-1301
1,3,5-Trimethylbenzene (Mesitylene)55 08/11/2021 23311105070-1301
1,2,4-Trimethylbenzene 56 08/11/2021 23311125070-1301
Vinyl chloride 60 08/11/2021 23311195060-1401
m+p - Xylenes 51 08/11/2021 23311025070-1301
o - Xylenes 54 08/11/2021 23311075070-1301
Surrogate Q % Rec Acceptance
Limit
1,2-Dichloroethane-d4 112 70-130
Bromofluorobenzene 105 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: WH05007
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Page 17 of 24
Volatile Organic Compounds by GC/MS - MB
Batch:Prep Method:
Sample ID:WQ12805-001
12805 SM 6200B-2011
Analytical Method:SM 6200B-2011
Matrix:Aqueous
Parameter Result Q LOQ DL Units Analysis DateDil
Benzene ND 08/20/2021 10550.50 0.40 ug/L1
Bromobenzene ND 08/20/2021 10550.50 0.40 ug/L1
Bromochloromethane ND 08/20/2021 10550.50 0.40 ug/L1
Bromodichloromethane ND 08/20/2021 10550.50 0.40 ug/L1
Bromoform ND 08/20/2021 10550.50 0.40 ug/L1
Bromomethane (Methyl bromide)ND 08/20/2021 10550.50 0.40 ug/L1
n-Butylbenzene ND 08/20/2021 10550.50 0.40 ug/L1
sec-Butylbenzene ND 08/20/2021 10550.50 0.40 ug/L1
tert-Butylbenzene ND 08/20/2021 10550.50 0.40 ug/L1
Carbon tetrachloride ND 08/20/2021 10550.50 0.40 ug/L1
Chlorobenzene ND 08/20/2021 10550.50 0.40 ug/L1
Chloroethane ND 08/20/2021 10550.50 0.40 ug/L1
Chloroform ND 08/20/2021 10550.50 0.40 ug/L1
Chloromethane (Methyl chloride)ND 08/20/2021 10550.50 0.40 ug/L1
2-Chlorotoluene ND 08/20/2021 10550.50 0.40 ug/L1
4-Chlorotoluene ND 08/20/2021 10550.50 0.40 ug/L1
Dibromochloromethane ND 08/20/2021 10550.50 0.40 ug/L1
1,2-Dibromoethane (EDB)ND 08/20/2021 10550.50 0.40 ug/L1
Dibromomethane (Methylene bromide)ND 08/20/2021 10550.50 0.40 ug/L1
1,2-Dichlorobenzene ND 08/20/2021 10550.50 0.40 ug/L1
1,3-Dichlorobenzene ND 08/20/2021 10550.50 0.40 ug/L1
1,4-Dichlorobenzene ND 08/20/2021 10550.50 0.40 ug/L1
Dichlorodifluoromethane ND 08/20/2021 10550.50 0.40 ug/L1
1,1-Dichloroethane ND 08/20/2021 10550.50 0.40 ug/L1
1,2-Dichloroethane ND 08/20/2021 10550.50 0.40 ug/L1
1,1-Dichloroethene ND 08/20/2021 10550.50 0.40 ug/L1
cis-1,2-Dichloroethene ND 08/20/2021 10550.50 0.40 ug/L1
trans-1,2-Dichloroethene ND 08/20/2021 10550.50 0.40 ug/L1
1,2-Dichloropropane ND 08/20/2021 10550.50 0.40 ug/L1
1,3-Dichloropropane ND 08/20/2021 10550.50 0.40 ug/L1
2,2-Dichloropropane ND 08/20/2021 10550.50 0.40 ug/L1
1,1-Dichloropropene ND 08/20/2021 10550.50 0.40 ug/L1
cis-1,3-Dichloropropene ND 08/20/2021 10550.50 0.40 ug/L1
trans-1,3-Dichloropropene ND 08/20/2021 10550.50 0.40 ug/L1
Diisopropyl ether (IPE)ND 08/20/2021 10550.50 0.40 ug/L1
Ethylbenzene ND 08/20/2021 10550.50 0.40 ug/L1
Hexachlorobutadiene ND 08/20/2021 10550.50 0.40 ug/L1
Isopropylbenzene (Cumene)ND 08/20/2021 10550.50 0.40 ug/L1
p-Isopropyltoluene (p-Cymene)ND 08/20/2021 10550.50 0.40 ug/L1
Methyl tertiary butyl ether (MTBE)ND 08/20/2021 10550.50 0.40 ug/L1
Methylene chloride ND 08/20/2021 10550.50 0.40 ug/L1
Naphthalene ND 08/20/2021 10550.50 0.40 ug/L1
n-Propylbenzene ND 08/20/2021 10550.50 0.40 ug/L1
Styrene ND 08/20/2021 10550.50 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: WH05007
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Page 18 of 24
Volatile Organic Compounds by GC/MS - MB
Batch:Prep Method:
Sample ID:WQ12805-001
12805 SM 6200B-2011
Analytical Method:SM 6200B-2011
Matrix:Aqueous
Parameter Result Q LOQ DL Units Analysis DateDil
1,1,1,2-Tetrachloroethane ND 08/20/2021 10550.50 0.40 ug/L1
1,1,2,2-Tetrachloroethane ND 08/20/2021 10550.50 0.40 ug/L1
Tetrachloroethene ND 08/20/2021 10550.50 0.40 ug/L1
Toluene ND 08/20/2021 10550.50 0.40 ug/L1
1,1,2-Trichloro-1,2,2-Trifluoroethane ND 08/20/2021 10550.50 0.40 ug/L1
1,2,3-Trichlorobenzene ND 08/20/2021 10550.50 0.40 ug/L1
1,2,4-Trichlorobenzene ND 08/20/2021 10550.50 0.40 ug/L1
1,1,1-Trichloroethane ND 08/20/2021 10550.50 0.40 ug/L1
1,1,2-Trichloroethane ND 08/20/2021 10550.50 0.40 ug/L1
Trichloroethene ND 08/20/2021 10550.50 0.40 ug/L1
Trichlorofluoromethane ND 08/20/2021 10550.50 0.40 ug/L1
1,2,3-Trichloropropane ND 08/20/2021 10550.50 0.40 ug/L1
1,3,5-Trimethylbenzene (Mesitylene)ND 08/20/2021 10550.50 0.40 ug/L1
1,2,4-Trimethylbenzene ND 08/20/2021 10550.50 0.40 ug/L1
Vinyl chloride ND 08/20/2021 10550.50 0.40 ug/L1
m+p - Xylenes ND 08/20/2021 10550.50 0.40 ug/L1
o - Xylenes ND 08/20/2021 10550.50 0.40 ug/L1
Surrogate Q % Rec Acceptance
Limit
1,2-Dichloroethane-d4 96 70-130
Bromofluorobenzene 87 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 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: WH05007
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Page 19 of 24
Volatile Organic Compounds by GC/MS - LCS
Batch:Prep Method:
Sample ID:WQ12805-002
12805 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 55 08/20/2021 09541115070-1301
Bromobenzene 53 08/20/2021 09541055070-1301
Bromochloromethane 58 08/20/2021 09541165070-1301
Bromodichloromethane 55 08/20/2021 09541115070-1301
Bromoform 47 08/20/2021 0954955070-1301
Bromomethane (Methyl bromide)55 08/20/2021 09541105060-1401
n-Butylbenzene 60 08/20/2021 09541205070-1301
sec-Butylbenzene 59 08/20/2021 09541195070-1301
tert-Butylbenzene 59 08/20/2021 09541175070-1301
Carbon tetrachloride 57 08/20/2021 09541145070-1301
Chlorobenzene 53 08/20/2021 09541055070-1301
Chloroethane 52 08/20/2021 09541045042-1631
Chloroform 57 08/20/2021 09541135070-1301
Chloromethane (Methyl chloride)52 08/20/2021 09541035020-1581
2-Chlorotoluene 55 08/20/2021 09541095070-1301
4-Chlorotoluene 55 08/20/2021 09541105070-1301
Dibromochloromethane 56 08/20/2021 09541125070-1301
1,2-Dibromoethane (EDB)53 08/20/2021 09541065070-1301
Dibromomethane (Methylene bromide)53 08/20/2021 09541075070-1301
1,2-Dichlorobenzene 53 08/20/2021 09541075070-1301
1,3-Dichlorobenzene 53 08/20/2021 09541065070-1301
1,4-Dichlorobenzene 51 08/20/2021 09541025070-1301
Dichlorodifluoromethane 55 08/20/2021 09541115060-1401
1,1-Dichloroethane 56 08/20/2021 09541135070-1301
1,2-Dichloroethane 54 08/20/2021 09541075070-1301
1,1-Dichloroethene 58 08/20/2021 09541165070-1301
cis-1,2-Dichloroethene 59 08/20/2021 09541185070-1301
trans-1,2-Dichloroethene 58 08/20/2021 09541175070-1301
1,2-Dichloropropane 52 08/20/2021 09541055070-1301
1,3-Dichloropropane 51 08/20/2021 09541025070-1301
2,2-Dichloropropane 61 08/20/2021 09541225070-1301
1,1-Dichloropropene 54 08/20/2021 09541095070-1301
cis-1,3-Dichloropropene 58 08/20/2021 09541165070-1301
trans-1,3-Dichloropropene 48 08/20/2021 0954955070-1301
Diisopropyl ether (IPE)61 08/20/2021 09541215070-1301
Ethylbenzene 56 08/20/2021 09541125070-1301
Hexachlorobutadiene 55 08/20/2021 09541095070-1301
Isopropylbenzene (Cumene)61 08/20/2021 09541215070-1301
p-Isopropyltoluene (p-Cymene)56 08/20/2021 09541125070-1301
Methyl tertiary butyl ether (MTBE)58 08/20/2021 09541155070-1301
Methylene chloride 55 08/20/2021 09541105070-1301
Naphthalene 52 08/20/2021 09541045050-1401
n-Propylbenzene 57 08/20/2021 09541135070-1301
Styrene 54 08/20/2021 09541075070-1301
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: WH05007
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Page 20 of 24
Volatile Organic Compounds by GC/MS - LCS
Batch:Prep Method:
Sample ID:WQ12805-002
12805 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 56 08/20/2021 09541125070-1301
1,1,2,2-Tetrachloroethane 51 08/20/2021 09541015070-1301
Tetrachloroethene 53 08/20/2021 09541065070-1301
Toluene 55 08/20/2021 09541105070-1301
1,1,2-Trichloro-1,2,2-Trifluoroethane 57 08/20/2021 09541145070-1301
1,2,3-Trichlorobenzene 55 08/20/2021 09541095070-1301
1,2,4-Trichlorobenzene 55 08/20/2021 09541115070-1301
1,1,1-Trichloroethane 58 08/20/2021 09541165070-1301
1,1,2-Trichloroethane 51 08/20/2021 09541025070-1301
Trichloroethene 56 08/20/2021 09541115070-1301
Trichlorofluoromethane 56 08/20/2021 09541135060-1401
1,2,3-Trichloropropane 49 08/20/2021 0954995070-1301
1,3,5-Trimethylbenzene (Mesitylene)59 08/20/2021 09541195070-1301
1,2,4-Trimethylbenzene 59 08/20/2021 09541195070-1301
Vinyl chloride 55 08/20/2021 09541105060-1401
m+p - Xylenes 58 08/20/2021 09541155070-1301
o - Xylenes 59 08/20/2021 09541195070-1301
Surrogate Q % Rec Acceptance
Limit
1,2-Dichloroethane-d4 99 70-130
Bromofluorobenzene 100 70-130
Toluene-d8 102 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: WH05007
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Page 21 of 24
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 22 of 24
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 23 of 24
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 24 of 24

APPENDIX C
SOD Testing Report

2901 East Gate City Blvd, Suite 2200 │ Greensboro, NC 27401 │ 336-217-5171
www.remrxremediation.com 1

Ethan Dinwiddie, GIT
Terracon Consultants, Inc.
2401 Brentwood Road, Suite 107
Raleigh, NC 27604
[phone]
[e-mail]

August 27, 2021

RE: Blalock Fina SOD Testing
3574 NC Highway 55
Angier, Harnett County, NC

Dear Ethan:
The RemRx team is submitting this letter to document the results of the soil oxidant demand (SOD) testing
performed on soils collected from the Blalock Fina Site (Site). A summary of the treatability study methods
and results is provided below.
Objective
The objective of the study was to determine the SOD for iron-activated persulfate for several soil samples
from the site. Soil samples SB-01, SB-02, and SB-03 from 8-10’ depth interval were collected by Terracon
and couriered to the RemRx Team laboratory in Greensboro, NC. The samples contained a strong petroleum
odor; however, quantification of the contaminants and concentrations was outside the scope of this
treatability study. The soils consisted of mostly clay and a coarse sand.
Methodology
The soil samples were allowed to dry in a fume hood over the course of ~18 hours. Once dry, soil samples
were ground with a mortar and pestle and 50 grams (g) of soil was added to each of three 250 milliliter
(mL) amber bottles (batch reactors). Each batch reactor was then dosed with 100 mL of deionized water.
Three persulfate dosings were then applied to each batch reactor. The persulfate dosing used included
1.0 g persulfate/kilogram (kg) soil, 2.5 g/kg, and 5.0 g/kg. the batch reactors were shaken twice per day
and allowed to react over the course of 48 hours. After 48 hours, a sample of the dissolved persulfate
solution was collected from each batch reactor and analyzed using a spectrophotometric assay with iodide.
Results
The absorbance of iodine at 352 nanometers (nm) was used to determine the concentration of persulfate
remaining in solution after 48 hours of reaction. The raw absorbance spectra are shown in Figure 1. As
shown, spectra obtained from SB-01 differ significantly from the spectral shape of iodine and; therefore,
conclusions about the persulfate remaining in solution cannot be drawn.

Blalock Fina SOD Testing
Terracon Project No. 70149672A

2901 East Gate City Blvd, Suite 2200 │ Greensboro, NC 27401 │ 336-217-5171
www.remrxremediation.com 2
The SOD for SB-02 and SB-03 was calculated by subtracting the concentration of persulfate remaining in
solution from the starting concentration of persulfate. The results of this calculation are shown in Figure 2.
It is typical to observe increased oxidant consumption as a function of increased initial oxidant
concentration, as higher oxidant concentrations can result in oxidant self-consumption. This trend is
evidenced by the exponential relationship between initial oxidant dosing and oxidant consumption (i.e.
doubling the dosing results in more than double the oxidant consumption). These results could also be
affected by the presence of contaminants, which would affect the consumption of oxidant over time.

Figure 1. Absorbance spectra of SOD samples after reaction with iodide assay.

Figure 2. Summary of SOD Analytical Results
0
0.05
0.1
0.15
0.2
0.25
0.3
0.35
0.4
300 350 400 450 500AbsorbanceWavelength (nm)
SB03 1.0g/kg
SB03 2.5g/kg
SB03 5.0g/kg
SB02 1.0g/kg
SB02 2.5g/kg
SB02 5.0g/kg
SB01 1.0g/kg
SB01 2.5g/kg
SB01 5.0g/kg
0.4 0.7
2.1
0.2
1.6
3.4
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
SB03
1.0g/kg
SB03
2.5g/kg
SB03
5.0g/kg
SB02
1.0g/kg
SB02
2.5g/kg
SB02
5.0g/kgSOD (g/kg)
Blalock Fina SOD Testing
Terracon Project No. 70149672A

2901 East Gate City Blvd, Suite 2200 │ Greensboro, NC 27401 │ 336-217-5171
www.remrxremediation.com 3
Summary and Conclusions
The results of the treatability study are summarized below.
 Analysis of the SB-01 sample indicated potential interference with the persulfate spectrum that
precluded the measurement of the SOD.

 SOD results for SB02 ranged from 0.2 g/kg to 3.4 g/kg; and results for SB03 ranged from 0.4 g/kg
to 2.1 g/kg.

 SOD values measured are generally consistent with the 2 g/kg SOD estimate utilized by the RemRx
Team in the development of the project proposal and are in the general range of a typical clayey
sandy soil.

The RemRx team appreciates the opportunity to assist in this treatability study. If you have any questions,
please feel free to contact us.

Sincerely,

Julia Darcy, PhD Jeff Albano, PG
Research Scientist, Laboratory Lead Technical Services Manager
[e-mail] [phone]
[e-mail]

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