WS-4900_16457_MRP_20211230

GROUNDWATER MONITORING REPORT
Stephen’s Exxon (Incident #16457)
20655 Highway 88 West
Creston, Ashe County, North Carolina
December 30, 2021
Terracon Project No. 75207132

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

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

Terracon Consultants, Inc. 7327-G West friendly Avenue Greensboro, NC 27410
P 336-3365-8135 F 336-365-7020 terracon.com
December 30, 2021

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

Re: Groundwater Monitoring Report
Stephen’s Exxon
20655 Highway 88 West
Creston, Ashe County, North Carolina
UST Incident Number: 16457
Terracon Project No. 75207132

Dear Mr. Berger:

Terracon Consultants, Inc. (Terracon) is pleased to submit this Groundwater Monitoring Report for
the above referenced property. This report has been prepared in general accordance with North
Carolina Department of Environmental Quality (NCDEQ), UST Section Guidelines for Assessment
and Corrective Action for UST Releases, dated January 19, 2021, and Task Authorization No. 01,
approved on July 1, 2021.

If you have any questions regarding this report or the assessment activities, please contact us at
336-365-8135.

Sincerely,
Terracon Consultants, Inc.

F. Christopher Driscoll, P.G. Edmund Woloszyn Jr. R.E.M
Project Geologist Authorized Project Reviewer

Mark I. Miller, L.G.
Senior Geologist

Enclosures

Table of Contents
A. SITE INFORMATION................................................................................................ 1
B. EXECUTIVE SUMMARY .......................................................................................... 2
C. SITE HISTORY AND CHARACTERIZATION .......................................................... 3
C.1 Site Setting ........................................................................................................................................... 3
C.2 Release Summary ............................................................................................................................... 4
C.3 Previous Investigations ........................................................................................................................ 4
C.4 Water Supply Wells ............................................................................................................................. 6
C.5 Surface Water...................................................................................................................................... 6
C.6 Land Use Information .......................................................................................................................... 6
D. ASSESSMENT INFORMATION ............................................................................ 7
D.1 Site Geology and Hydrogeology ......................................................................................................... 7
D.2 Sampling Activities ............................................................................................................................... 8
D.2.1 LNAPL Evaluation................................................................................................................................ 8
D.2.2 Groundwater Sampling Activities ........................................................................................................ 8
D.3 Analytical Results ................................................................................................................................ 8
E. CONCLUSIONS AND RECOMMENDATIONS ..................................................... 9
F. REFERENCES .................................................................................................... 10

EXHIBITS
Exhibit 1: Topographic Map
Exhibit 2: Site Diagram
Exhibit 3: Water Supply Well Map
Exhibit 4: Groundwater Elevation Contour Map (September 2021)
Exhibit 5: Groundwater Analytical Results (September 2021)

TABLES
Table 1: Water Supply Well and Spring Information
Table 2: Historical Water Supply Wells Analytical Results
Table 3: Monitoring Well Construction Information and Water Level Measurements
Table 4: Summary of Groundwater Analytical Results

APPENDIX
Appendix A: Field Notes
Appendix B: Laboratory Analytical Results and Chain of Custody Forms
Stephen’s Exxon
Creston, North Carolina
Terracon Project No. 75207132
Incident No. 16457
December 30, 2021

Responsive ■ Resourceful ■ Reliable 1

GROUNDWATER MONITORING REPORT
A. SITE INFORMATION
Date of Report: December 30, 2021
NCDEQ Incident No: 16457
Facility ID: 0-000453
UST #: WS-4900
Site Name: Stephens Exxon
Site Location: 20655 Highway 88 West
Creston, Ashe County, North Carolina 28615
Latitude: N 36.401515
Longitude: W -81.693370
UST Owner/Operator: Segraves Oil Company, Inc.

Current Property Owner: Vincent Boccardy and Courtney Cutillo
420 Barlow Rd
Creston, North Carolina 28615

Current Property Occupant: Vincent Boccardy and Courtney Cutillo
420 Barlow Rd
Creston, North Carolina 28615

Consultant: Terracon Consultants, Inc.
7327-G W. Friendly Ave
Greensboro, North Carolina 27410
[phone]
Laboratory: Pace Analytical National Center for Testing and Innovation
12065 Lebanon Road
Mount Juliet, Tennessee 37122
[phone]
Release Information: Release Date: October 1996
Estimated Quantity: Unknown
Source: three 2,000-gallon gasoline USTs, one 560-gallon Kerosene
UST
Cause of Release: Leaking product lines
Currently Active Tanks: None

Stephen’s Exxon
Creston, North Carolina
Terracon Project No. 75207132
Incident No. 16457
December 30, 2021

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I, Mark I. Miller, a Licensed Geologist for Terracon Consultants, Inc., do certify that the information
contained in this report is correct and accurate to the best of my knowledge.

Mark I. Miller, L.G.
NC License No. 1715

Terracon Consultants, Inc. is licensed to practice geology/engineering in North Carolina. The
certification number of the corporation is F-0869.
B. EXECUTIVE SUMMARY
The purpose of this report is to evaluate the current status of the groundwater quality at the former
Stephen’s Exxon site (Incident No. 16457) by sampling monitoring wells MW-5R, MW-13, MW-14,
MW-15, MW-16, and MW-17. Terracon completed this report to summarize the findings of
assessment activities performed on September 26, 2021. The release incident is situated on the
property located at 20655 Highway 88 West in Creston, Ashe County, North Carolina in an area
developed with rural residences. The site currently operates as a workshop for the current property
owner.

Terracon mobilized to the site on September 26, 2021, to conduct groundwater sampling activities.
Terracon gauged the groundwater elevations in monitoring wells MW-5R, MW-13, MW-14, MW-15,
MW-16, and MW-17. Depth to groundwater in the monitoring wells ranged from approximately 1.25
feet below top of casing (btoc) in well MW-16 to 7.65 feet btoc in well MW-15. Based on top of
casing elevations, groundwater flow is to the southeast. In addition, monitoring well MW-11 was
gauged, which has historically had various thicknesses of light non-aqueous phase liquids (LNAPL).
Based on information obtained during the completion of our assessment activities, Terracon provides
the following conclusions and findings.

Based on water level measurements, groundwater flow is calculated to be towards the southeast.
There are four private water supply wells (one inactive) and five water supply springs within a
1,500-foot radius of the site. Municipal water is not available to the site or the immediately
surrounding properties. All past sampling of the three water supply wells (WSW-6, WSW-7, and
WSW-8) located cross-gradient from the source release reported contaminant concentrations
below the laboratory method detection limits (MDLs).
LNAPL was observed in the monitoring well MW-11 (0.25 inches) and has decreased in thickness
when compared to the last groundwater sampling event in October 2019.
Petroleum constituents were not reported above GCLs in any of the sampled wells.
N-propylbenzene was reported in wells MW-14 and MW-15 above the 2L Standards.
Stephen’s Exxon
Creston, North Carolina
Terracon Project No. 75207132
Incident No. 16457
December 30, 2021

Responsive ■ Resourceful ■ Reliable 3
Ethylbenzene was reported in well MW-15 above the 2L Standards.
1,2,4-trimethylbenznene was reported in wells MW-5R, MW-14, MW-15 above the 2L Standards.
Contaminants have generally decreased in concentration in monitoring well MW-5R when
compared to historical groundwater sampling data.
Contaminants have generally increased in concentration in wells MW-14 and MW-15, with certain
concentration values exceeding 2L Standards, when compared to historical groundwater
sampling data.
Based on the data presented in this monitoring report, Terracon recommends the following activities
be completed at the site.
Install an air sparge well and an extraction well west of the site building near the former
kerosene UST in an effort to remove LNAPL detected in well MW-11.
Three months subsequent to installation of the air sparge well and extraction well, conduct a
Mobile Multi-Phase Extraction (MMPE) air sparging event.
Three months subsequent to the MMPE air sparging event, sample monitoring wells MW-11,
MW-13, MW-14 and water supply well WSW-8.
C. SITE HISTORY AND CHARACTERIZATION
The purpose of this report is to evaluate the current status of the groundwater quality at the former
Stephens Exxon site. Terracon completed this report to summarize the findings of assessment
activities performed on September 26, 2021 at the former M&P Grocery located at 20655 Highway
88 West in Creston, Ashe County, North Carolina (Exhibit 1). This Groundwater Monitoring Report
was prepared for the site in response to a request by the Incident Manager, Mr. Herb Berger with the
NCDEQ Division of Waste Management, Trust Fund Branch.

The Federal/State Lead Monitoring Report was prepared in general accordance with 15A NCAC 2L
.0115 regulations and the NCDEQ Underground Storage Tank (UST) Section Assessment
Guidelines, dated January 19, 2021, under the supervision of Mr. Mark I. Miller, a North Carolina
licensed geologist (North Carolina License No. 1715).

C.1 Site Setting

The Stephen’s Exxon site is located at 20655 Highway 88 West in Creston, Ashe County, North
Carolina. The site is bordered to the north by NC Highway 88 West with surrounding residential and
agricultural parcels in a rural setting. The property has been developed with a single one-story
structure that serves as a workshop for the current property owner with asphalt and concrete parking
areas. Historically, the site operated as Joe Stephen’s Grocery that maintained three 2,000 -gallon
USTs and one 560-gallon Kerosene UST. The site is depicted in Exhibit 2.
Stephen’s Exxon
Creston, North Carolina
Terracon Project No. 75207132
Incident No. 16457
December 30, 2021

Responsive ■ Resourceful ■ Reliable 4

C.2 Release Summary

According to historical assessment information, three 2,000-gallon gasoline USTs were installed in
May 1975 and one 560-gallon Kerosene UST was installed in May 1976. The gasoline USTs were
located near the northeast corner of the building on the property and the kerosene UST was located
along the west side of the building. The gasoline USTs, most of the product lines, and approximately
100 cubic yards of contaminated soil were removed from the property in October 1996. Upon
removal of the USTs, representatives from the Winston-Salem Regional Office, Division of Water
Quality noted the soil at the excavation site to be discolored and odorous.

C.3 Previous Investigations

Upon removal of the three 2,000-gallon gasoline USTs in October 1996, soil samples were collected
from the excavation site and the former fuel dispenser location by representatives of the Winston-
Salem Regional Office, Division of Water Quality. Laboratory analysis of the soil samples yielded
petroleum contaminants exceeding the North Carolina State Action Level of 10 parts per million.
During the same month, Salem Environmental installed a monitoring well (MW-1) in the proximity of
the former gasoline USTs which yielded groundwater with a distinct petroleum odor. Due to evidence
of contamination, the North Carolina Department of Environment and Natural Resources (NCDENR)
requested further investigation to evaluate the extent of the release.

Between March and June 1997, Geonetics Corporation (Geonetics) installed five shallow monitoring
wells (MW-2 through MW-6) around the building on the property, two temporary wells (TW-2 and
TW-3) east of the building on the property, and a deep aquifer monitoring well (MW-7) south of the
former UST location to further delineate the extent of petroleum impact on the site. Laboratory
analysis from subsequent groundwater sampling in monitoring wells MW-1, MW-5, and TW-2
identified concentrations of petroleum constituents above Title 15A of the North Carolina
Administrative Code subchapter 2L (15A NCAC 2L) groundwater standards, hereafter referred to as
the 2L Standards. To further delineate petroleum contamination, Geonetics installed two additional
shallow monitoring wells (MW-8 and MW-9) further east on the property towards the North Fork New
River.

In August 1998, Geonetics facilitated the removal of the 560-gallon Kerosene UST on the site along
with approximately 7.3 cubic yards of contaminated soil. Laboratory analysis from collected soil
samples reported concentrations that exceeded the Soil-to-Water Maximum Soil Contaminant
Concentrations (MSCCs) with detections of volatile and semi-volatile total petroleum hydrocarbons in
excess of the North Carolina State Action Level of 10 parts per million. Geonetics concluded that
groundwater contamination was due to releases from the UST systems and submitted a Corrective
Action Plan (CAP) that proposed further remedial excavations. To further delineate petroleum
contamination, Geonetics installed one additional shallow monitoring well (MW-10) in the vicinity of
the removed kerosene tank basin.

Stephen’s Exxon
Creston, North Carolina
Terracon Project No. 75207132
Incident No. 16457
December 30, 2021

Responsive ■ Resourceful ■ Reliable 5
Between June and July 2003, Geonetics excavated approximately 832 tons of contaminated soil
above the water table from the former UST basins and dispenser locations. Laboratory analysis from
soils collected at the bottom of the excavation area indicated the continued presence of residual
petroleum contaminants exceeding the Soil-to-Water Maximum Soil Contaminant Concentrations
(MSCCs) several feet below the water table, as well as in the soil beneath the building on the
property. To further delineate petroleum contamination, Geonetics installed two additional shallow
monitoring wells (MW-11 and MW-12) around the vicinity of the on-site building.

In March 2004, the NCDENR requested a soil excavation event near the former fuel dispenser
island. Samples of soil collected from the bottom of the excavation pit yielded concentrations of
benzene, toluene, ethylbenzene, and xylenes (BTEX) in excess of Soil-to-Water MSCCs.

In May 2004, Geonetics conducted a groundwater monitoring event at the site. Laboratory analysis
indicated the presence of elevated BTEX concentrations above 2L Standards in monitoring wells
MW-5 and MW-11, which are located south of the former UST basin.

In February 2011, Terraine Environmental (Terraine) conducted a groundwater monitoring event at
the site. One foot of measurable light non-aqueous phase liquid (LNAPL) was present in monitoring
well MW-11. Laboratory analysis confirmed the presence of petroleum contaminants in monitoring
wells MW-2, MW-3, MW-4, MW-7, and MW-12. However, petroleum constituents in the groundwater
samples did not contain analytes at concentrations exceeding 2L Standards.

In August 2011, Terraine returned to the site to supervise an Aggressive Fluid Vapor Recovery
(AFVR) event on monitoring well MW-11. After the event, approximately 175 gallons of petroleum
impacted groundwater were recovered. Approximately 0.2 feet of LNAPL continued to be observed in
MW-11. Laboratory analysis from groundwater sampling following the AFVR event indicated a
decrease in petroleum impact in monitoring wells MW-4 and MW-12. Following sampling, Terraine
installed a Universal Remediation, Inc., PRP Well Boom in monitoring well MW-11 in an effort to
lower petroleum contaminant concentrations.

Throughout 2012 and 2013, Crawford Environmental Services (CEM) conducted a series of
groundwater monitoring events. Measurable amounts of LNAPL continued to be observed in
monitoring well MW-11. Laboratory analysis identified detectable levels of petroleum contaminants in
monitoring wells MW-3 and MW-12.

In October 2014, ATC Associates of North Carolina, P.C. (ATC) conducted a groundwater monitoring
event. Measurable amounts of LNAPL continued to be observed in monitoring well MW-11.
Laboratory analysis from groundwater sampling identified multiple constituents exceeding 2L
Standards in monitoring well MW-5. In August 2018, ATC returned to sample monitoring wells and
identified concentrations of isopropyl ether and sec-butylbenzene below 2L Standards.

Between March and October 2019, ATC installed five shallow monitoring wells (MW-13 through MW-
17) to further delineate the horizontal extent of the petroleum impact and installed shallow monitoring
Stephen’s Exxon
Creston, North Carolina
Terracon Project No. 75207132
Incident No. 16457
December 30, 2021

Responsive ■ Resourceful ■ Reliable 6
well MW-5R near the location of MW-5 as it was no longer found on the site. Measurable LNAPL
continued to appear in monitoring well MW-11. Laboratory analysis from groundwater sampling
identified concentrations of petroleum constituents above 2L Standards in monitoring well MW-5R.
ATC concluded that there appeared to be two plumes: one associated with kerosene (near MW-11)
and another with gasoline (near MW-5R).

In August 2021, Terracon Consultants, Inc. (Terracon) conducted a Mobile Multi-Phase Extraction
(MMPE) event at monitoring well MW-7. A total of 3.77 gallons of mixed product and water were
removed from the site. Approximately 8 gallons of free product was recovered as liquid and 3.33
gallons of Volatile Organic Compounds (VOCs) were removed as vapor. After the event, no free
product was identified in any of the on-site monitoring wells.

C.4 Water Supply Wells

Based on receptor survey information provided by Geonetics in 2012, there are four private water
supply wells (one-inactive) and five water supply springs within a 1,500-foot radius of the site. The
on-site water supply well (WSW-8) is located approximately 60 feet southwest of the former
kerosene UST release source area. Geonetics did not find evidence at the time of the assessment
that the water supply springs or potential receptors were affected by the UST release. The locations
of the water supply wells are shown on Exhibit 3 and water supply well information is provided in
Table 1.

In 2015, ATC identified and sampled three water supply wells and springs (WSW-6, WSW-7, and
WSW-8) located within 1,000 feet from the site. Wells WSW-6 and WSW-7 are located cross-
gradient and approximately 600 feet and 950 feet from the source release, respectively. Analytical
results did not identify detectable concentrations of petroleum constituents in the tested water supply
wells. In March 2019, ATC sampled water supply wells WSW-7 and WSW-8 and did not identify
petroleum contaminants above MDLs. Historical water supply analytical groundwater results from
previous sampling events are provided in Table 2.

C.5 Surface Water

A small intermittent stream runs along the western border of the property. The North Fork of the New
River is located approximately 720 feet southeast of the former UST basin. The North Fork of the
New River is depicted as Class C, Trout Waters. Surface runoff on the site is generally to southeast.
A spring is located north of well MW-2 and is piped underground heading southeast towards the
river. Surface waters are depicted on Exhibit 1.

C.6 Land Use Information

The site is bound to the north by NC Highway 88 and single-family residences, to the east by
agricultural land and single-family residences, to the west by single-family residences, and to the
south by agricultural land and the North Fork of the New River.
Stephen’s Exxon
Creston, North Carolina
Terracon Project No. 75207132
Incident No. 16457
December 30, 2021

Responsive ■ Resourceful ■ Reliable 7
D. ASSESSMENT INFORMATION

D.1 Site Geology and Hydrogeology

The following resources were reviewed to evaluate site-specific geological and hydrogeological
characteristics.

Baldwin Gap Quadrangle, North Carolina, USGS 7.5-minute series topographic map, dated 2003.
(Exhibit 1).
Geologic Map of North Carolina, dated 1985.
The Geology of the Carolinas, Carolina Geological Society Fiftieth Anniversary Volume, edited by J.
Wright Horton, Jr., and Victor A. Zullo, The University of Tennessee Press, dated 1991.
Soil Survey of Ashe County, North Carolina, US Department of Agriculture, Natural Resources
Conservation Service, Web Soil Survey via the Internet, http://websoilsurvey.nrcs.usda.gov/app/
The site is located within the Blue Ridge Physiographic Province which generally consists of tall,
high-relief topography and long northeast to southwest trending ridges with incised creeks and river
channels. According to the geologic map, the site is specifically underlain by an unconformity with
bedrock consisting of biotite granitic gneiss.

In-place chemical and physical weathering of parent rocks typically form residual soils in the Blue
Ridge region. Weathering is facilitated by the presence of fractures, joints, and less resistant
minerals in the rock. Saprolite derived from the underlying bedrock is generally thinner in the Blue
Ridge than in the Piedmont. Furthermore, soils on mountain slopes are moved down-slope by water
and gravity more readily than in the more moderately sloped Piedmont Physiographic Province,
resulting in relatively thicker colluvial deposits in valleys. According to available excavation records
for the site, soils encountered consisted of sandy silt to silty sand.

In much of the Blue Ridge, groundwater generally occurs in pore spaces within soils and in the
structural features present in the underlying rock (i.e. joints, fractures, and faults). Recharge to the
water table is primarily by precipitation infiltrating the surficial, unsaturated soils (vadose zone) and
percolating downward under the influence of gravity to the water table (saturated zone). Typically, the
water table is not a level surface, but a subdued reflection of the land surface. The depth to the
water table is not consistent and is dependent upon several factors that include the amount of
rainfall, permeability of the soil, the extent of fracturing in the underlying rock and the influences of
groundwater pumping. Groundwater typically flows in directions perpendicular to lines of equal head
and under the influence of gravity, migrates to discharge points such as surface water features, the
toes of slopes or natural springs.

Please note that fluctuations in the depth of the water table can be expected depending on variations
in precipitation, surface water run-off and other factors not evident at the time of our subsurface
exploration. Normally, the highest levels of the water table occur in late winter and spring and the
Stephen’s Exxon
Creston, North Carolina
Terracon Project No. 75207132
Incident No. 16457
December 30, 2021

Responsive ■ Resourceful ■ Reliable 8
lowest levels occur in the late summer and fall. Based on groundwater elevation measurements
taken on September 26, 2021, groundwater is estimated to flow to the southeast toward the North
Fork of the New River (Classified as Class C, Trout Waters).

D.2 Sampling Activities

Terracon mobilized to the site on September 26, 2021, to conduct groundwater sampling activities.
Terracon gauged the groundwater elevations in monitoring wells MW-5R, MW-11, MW-13, MW-14,
MW-15, MW-16, and MW-17. Depth to groundwater in the monitoring wells ranged from
approximately 1.25 feet below top of casing (btoc) in well MW-16 to 7.65 feet btoc in well MW-15.
Based on top of casing elevations, groundwater flow is to the southeast.

D.2.1 LNAPL Evaluation

Approximately 0.02 feet of LNAPL was detected in monitoring well MW-11.

D.2.2 Groundwater Sampling Activities

Terracon gauged the monitoring wells using the electric water level meter with accuracy of 1/100th of
a foot to collect groundwater elevation data in monitoring wells MW-5R, MW-13, MW-14, MW-15,
MW-16, and MW-17. Depth to groundwater in the monitoring wells ranged from approximately 1.25
feet below top of casing (btoc) in well MW-16 to 7.65 feet btoc in well MW-15. Approximately 0.25
inches of LNAPL was present in monitoring well MW-11, and therefore was not sampled. Based on
top of casing elevations, groundwater flow is to the southeast. The approximate locations of the
wells are shown on the Site Diagram (Exhibit 2). A groundwater elevation map depicting
groundwater flow contours and direction is shown on Exhibit 4. Current and historical groundwater
elevation measurements are provided in Table 3.

The groundwater samples and a field blank 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, Inc. in Mount Juliet, Tennessee for analysis of VOCs by
Standard Method 6200B, including MTBE, EDB and IPE.
D.3 Analytical Results
Based on the laboratory analytical results, wells MW-14 and MW-15 reported concentrations of n-
propylbenzene exceeding the 2L Standards (158 µg/L and 101 µg/L, respectively). Wells MW-5R,
MW-14, and MW-15 reported concentrations of 1,2,4-trimethylbenzene at concentrations exceeding
the 2L Standards (630 µg/L, 797 µg/L, and 584 µg/L, respectively). Wells MW-5R, MW-14, and MW-
15 reported concentrations of total xylenes at concentrations exceeding the 2L Standards (737 µg/L,
845 µg/L, and 1,255 µg/L, respectively). Well MW-15 reported concentrations of ethylbenzene at a
concentration exceeding the 2L Standards (788 µg/L). Various petroleum constituents were reported
in wells MW-5R, MW-13, MW-14, MW15, and MW-17 above the MDLs but below the 2L Standards.
Stephen’s Exxon
Creston, North Carolina
Terracon Project No. 75207132
Incident No. 16457
December 30, 2021

Responsive ■ Resourceful ■ Reliable 9
Petroleum constituents were not reported at concentrations exceeding the MDLs in MW-16.

When compared to historical groundwater data, analytical results from this sampling event in well
MW-5R indicate a general decrease in contaminant concentrations, with certain analytes displaying
concentrations below 2L standards. However, groundwater contaminant concentrations from this
sampling event have generally increased in wells MW-14 and MW-15 since the installation and
subsequent sampling of the wells in 2019. Monitoring wells MW-13, MW-16, and MW-17 all reported
contaminant concentrations below 2L Standards.

The groundwater analytical results from the sampled monitoring wells and the historical groundwater
analytical results from previous sampling events are summarized in Table 4. The analytical results
are also depicted on Exhibit 5. Isoconcentration maps of petroleum contaminant analytes on the site
were not generated for this report due to insufficient analytical groundwater data collected for each
contaminant plume. Copies of the laboratory analytical reports are provided in Appendix A.
E. CONCLUSIONS AND RECOMMENDATIONS
Based on information obtained during the completion of our assessment activities, Terracon provides
the following conclusions and findings.

Groundwater flow is calculated to be towards the southeast.
There are four private water supply wells (one-inactive) and five water supply springs within a 1,500-
foot radius of the site. Municipal water is not available to the site or the immediately surrounding
properties. All past sampling of the three water supply wells (WSW-6, WSW-7, and WSW-8)
located cross-gradient from the source release reported contaminant concentrations below the
MDLs.
LNAPL was observed in the monitoring well MW-11 (0.02 feet) and has decreased in thickness
when compared to the last groundwater sampling event in October 2019.
Petroleum constituents were not reported above GCLs in the wells that were sampled in this
monitoring event.
N-propylbenzene was reported in wells MW-14 and MW-15 above the 2L Standards.
Ethylbenzene was reported in well MW-15 above the 2L Standards.
1,2,4-trimethylbenznene was reported in wells MW-5R, MW-14, MW-15 above the 2L Standards.
Contaminants have generally decreased in concentration in monitoring well MW-5R when
compared to historical groundwater sampling data.
Contaminants have generally increased in concentration in wells MW-14 and MW-15, with certain
concentration values exceeding 2L Standards, when compared to historical groundwater sampling
data.
Stephen’s Exxon
Creston, North Carolina
Terracon Project No. 75207132
Incident No. 16457
December 30, 2021

Responsive ■ Resourceful ■ Reliable 10
Based on the data presented in this monitoring report, Terracon recommends the following activities
be completed at the site.
Install an air sparge well and an extraction well west of the site building near the former
kerosene UST in an effort to remove LNAPL detected in well MW-11.
Three months subsequent to installation of the air sparge well and extraction well, conduct a
Mobile Multi-Phase Extraction (MMPE) air sparging event.
Three months subsequent to the MMPE air sparging event, sample monitoring wells MW-11,
MW-13, MW-14 and water supply well WSW-8.
F. REFERENCES
Salem Environmental, 1996. Closure Report and Assessment, Stephen’s Exxon. Salem
Environmental, October 23, 1996.

Geonetics Corporation. Comprehensive Site Assessment: Joe Stevens Grocery. Geonetics
Corporation, November 26, 1997.

Geonetics Corporation. Additional Soil Sampling Report: Stephens Grocery. Geonetics Corporation,
November 21, 2003.

Geonetics Corporation. Soil Cleanup Report: Joe Stephens Grocery. Geonetics Corporation, April
13, 2004.

Geonetics Corporation. CAP Monitoring Report: Joe Stephens Grocery. Geonetics Corporation, May
24, 2004.

Terraine Environmental. Groundwater Monitoring Report: Joe Stephens Grocery. Terraine
Environmental. March 23, 2011.

Terraine Environmental. AFVR and Subsequent Groundwater Monitoring Report: Joe Stephens
Grocery. Terraine Environmental. August 29, 2011.

Crawford Environmental Services. Groundwater Monitoring Report: Joe Stephens Grocery. Crawford
Environmental Services. April 9, 2013.

ATC Associates of North Carolina, P.C., 2015. Groundwater Monitoring Report: Stephen’s Exxon.
ATC Associates of North Carolina, P.C., January 12, 2015.

ATC Associates of North Carolina, P.C., 2019. Groundwater Monitoring Report: Stephen’s Exxon.
ATC Associates of North Carolina, P.C., July 2, 2019.

ATC Associates of North Carolina, P.C., 2020. Groundwater Monitoring Report: Stephen’s Exxon.
ATC Associates of North Carolina, P.C., January 16, 2020.

EXHIBITS
TOPOGRAPHIC MAP IMAGE COURTESY OF THE U.S. GEOLOGICAL SURVEY QUADRANGLES INCLUDE: BALDWIN GAP, NC (1/1/2003).
Topographic Map
NCDEQ 2020-2023: Stephens Exxon
Incident #: 16457
20655 North Carolina Highway 88 West
Creston, Ashe County, North Carolina
7327 W Friendly Ave Ste G
Greensboro, NC 27410-6253
75207132
DIAGRAM IS FOR GENERAL LOCATION ONLY,
AND IS NOT INTENDED FOR CONSTRUCTION
PURPOSES
Project Manager:
Drawn by:
Checked by:
Approved by:
FCD
MIM
EW
MIM
75207126
12/14/2021
Project No.
File Name:
Date:
1
Exhibit
1”=2,000’ Scale:
APPROXIMATE
SITE BOUNDARY
@A
@A@A
@A
@A
@A
@A
@A
@A
@A
@A
@A
@A
@A
@A
@A
@A
MW-10
MW-6
MW-3
MW-4
MW-8
MW-2
MW-7
MW-1
MW-14
MW-11
MW-13
MW-17
MW-16
MW-5R
MW-12
MW-15
WSW-8
EXHIBIT NO.
File Path:
Date:
PM:
Drawn By:
Checked By:
Approved By:
Project No.
Scale:
2
75207132MIM
AAF
EW
EW 7327-G West Friendly Avenue Greensboro, NC 27410Phone: [phone] Fax: [phone]
Site Diagram
NCDEQ 2020-2023: Stephens ExxonIncident #: 1645720655 North Carolina Highway 88 WestCreston, Ashe County, North Carolina
Note: All monitoring well, water supplywell, and former UST locations havebeen approximated based on siteobservations and data received fromNCDEQ.
MW-9 location could not beapproximated
Legend
@A Water Supply Well
@A Monitoring Well
Former Kerosene USTFormer Gasoline UST Site BoundaryAshe County Parcel Boundary05010025Feet
As Shown
December 2021 NC HIGHWAY 88 WESTStephens Exxon FORMER JOE STEPHENSEXXON

Water Supply Well Map
7327 W Friendly Ave Ste G
Greensboro, NC 27410-6253
75207132 AERIAL PHOTOGRAPHY PROVIDED BY MICROSOFT BING MAPS NCDEQ 2020-2023: Stephens Exxon
Incident #: 16457
20655 North Carolina Highway 88 West
Creston, Ashe County, North Carolina

DIAGRAM IS FOR GENERAL LOCATION ONLY, AND IS NOT INTENDED FOR CONSTRUCTION PURPOSES
Project Manager:
Drawn by:
Checked by:
Approved by:
FCD
MIM
EW
MIM
75207132
12/14/2021
Scale:
Project No.
File Name:
Date:
AS SHOWN 3
Exhibit
@A
@A@A
@A
@A
@A
@A
@A
@A
@A
@A
@A@A
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91'
87'88'90'92'89'
WSW-891'91'
MW-10
MW-6(86.76)
MW-9
MW-3
MW-4
MW-8
MW-2
MW-7(NS)
MW-1
MW-14(91.64')
MW-11(0.02'LNAPL)
MW-13(91.27')
MW-17(87.23')
MW-16(86.28')
MW-5R
MW-15(92.55')
MW-12
EXHIBIT NO.
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Project No.
Scale:
4
75207132MIM
AAF
EW
EW 7327-G West Friendly Avenue Greensboro, NC 27410Phone: [phone] Fax: [phone]
Groundwater Elevation Contour Map(September 2021)
NCDEQ 2020-2023: Stephens ExxonIncident #: 1645720655 North Carolina Highway 88 WestCreston, Ashe County, North Carolina
Note: All monitoring well, water supplywell, and former UST locations havebeen approximated based on siteobservations and data received fromNCDEQ.
MW-9 location approximated ± 500' fromsoutheast building corner.
Legend
@A Water Supply Well
@A Monitoring Well
GWContourGroundwater Flow DirectionFormer Kerosene USTFormer Gasoline UST Site BoundaryAshe County Parcel Boundary05010025Feet
As Shown
December 2021NC HIGHWAY 88 WESTStephens Exxon
@A
@A@A
@A
@A
@A
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@AWSW-8
MW-6
MW-3
MW-4
MW-8
MW-2
MW-7
MW-1
MW-14
MW-11
MW-10
MW-13
MW-17
MW-16
MW-5R
MW-12
MW-15
EXHIBIT NO.
File Path:
Date:
PM:
Drawn By:
Checked By:
Approved By:
Project No.
Scale:
5
75207132MIM
AAF
EW
EW 7327-G West Friendly Avenue Greensboro, NC 27410Phone: [phone] Fax: [phone]
Groundwater Analytical Results(September 2021)
NCDEQ 2020-2023: Stephens ExxonIncident #: 1645720655 North Carolina Highway 88 WestCreston, Ashe County, North Carolina
Note: All monitoring well, water supply well, and former UST locations have been approximated basedon site observations and data received from NCDEQ.
NR = Not Reported ar a concentration above the laboratory reporting limit.
Analytes inBOLD indicate concentrations exceeding the 2L Standards.
Analytes highlighted in yellow indicate concentrations exceeding the GCL
Legend
@A Water Supply Well
@A Monitoring Well
Former Kerosene USTFormer Gasoline UST Site BoundaryAshe County Parcel Boundary
0 50 10025Feet
As Shown
December 2021
MW-5RVOCs by 6200B n-Butylbenzene = 16.9 μg/Lsec-Butylbenzene= 9.4 μg/LEthylbenzene = 249 μg/LIsopropylbenzene = 42 μg/Lp-Isopropyltoluene = 5.64 μg/LStyrene = 3.93 μg/LToleune = 48 μg/L1,2,4 Trimethylbenzene = 630 μg/L1,3,5 Trimethylbenzene = 186 μg/LTotal Xylenes = 737 μg/L
MW-15VOCs by 6200BEthylbenzene = 788 μg/Ln-Propylbenzene = 101 μg/LToluene = 121 μg/L1,2,4 Trimethylbenzene = 584 μg/L1,3,5 Trimethylbenzene = 167 μg/LTotal Xylenes = 1,255 μg/LNC HIGHWAY 88 WESTStephens Exxon
MW-13VOCs by 6200Bn-Butylbenzene = 2 μg/Lsec-Butylbenzene= 3 μg/LIsopropylbenzene = 1 μg/Lp-Isopropyltoluene = 1 μg/L1,2,4 Trimethylbenzene = 14 μg/L
MW-14VOCs by 6200Bn-Butylbenzene = 18 μg/Lsec-Butylbenzene = 11 μg/LEthylbenzene = 309 μg/LIsopropylbenzene = 41 μg/Ln-Propylbenzene = 158 μg/Ltoluene = 48 μg/L1,2,4 Trimethylbenzene = 797 μg/L 1,3,5 Trimethylbenzene = 214 μg/L Total Xylenes = 845
FORMER JOE STEPHEN'SEXXONMW-16VOCs by 6200BAll Constituents = NR
MW-17VOCs by 6200B1,2,4 Trimethylbenzene = 2 μg/L

MW-11VOCs by 6200BNot Sampled0.02 feet LNAPL

TABLES
Table 1
Water Supply Well and Spring Information
Stephens Exxon
20655 US Highway 88 West
Creston, Ashe County, North Carolina
NCDEQ Incident No. 16457
Terracon Project No. 75207132
Well ID*Property Owner Property Address / Owner Mailing
Address Owner Address Use distance (ft)Direction
WSW-1 JIMMY DEAN POTTER 20473 NC HWY 88 W, CRESTON,
NC 28615
1197 FINGER BRIDGE RD
HICKORY, NC 28602
Potable Water,
Spring 1,000 East
WSW-2 MARY BELL WINEBARGER 19998 NC HWY 88 W, CRESTON,
NC 28615
1085 BRUSHY FORK RD
CRESTON, NC 28615
Potable Water,
Spring 1,300 Northeast
WSW-3 MARY BELL WINEBARGER 20410 NC HWY 88 W, CRESTON,
NC 28615
165 MEADOW RIDGE RD
BOONE, NC 28607
Potable Water,
Well 1,100 Northeast
WSW-4 CARL GRANT STEPHENS 20498 NC HWY 88 W, CRESTON,
NC 28615
20498 NC HIGHWAY 88 W, CRESTON, NC
28615
Potable Water,
Well 850 Northeast
WSW-5 EUGENE & FAYE M WARD 749 GREEN VALLEY RD,
CRESTON, NC 28615
749 GREEN VALLEY RD
CRESTON, NC 28615
Potable Water,
Spring 1,670 Northwest
WSW-6 JACK PRICE 20794 NC HWY 88 W, CRESTON,
NC 28615
20794 NC HIGHWAY 88 W
CRESTON, NC 28615
Potable Water,
Spring 600 South
WSW-7 BOB W & DARLENE J CORNETT 20871 NC HWY 88 W, CRESTON,
NC 28615
20871 NC HIGHWAY 88 W
CRESTON, NC 28615
Potable Water,
Well 950 South
WSW-8 VINCENT & COURTNEY BOCCARDY 20655 NC HWY 88 W, CRESTON,
NC 28615
420 BARLOW RD
CRESTON, NC 28615
Potable Water,
Well On-site On-site
WSW-9 STEPHENS THOMAS EARL 166 GREEN VALLEY RD,
CRESTON, NC 28615
166 GREEN VALLEY RD
CRESTON, NC 28615
Potable Water,
Spring 320 North
WSW-10 JIMMY R & SHIRLEY D SORRELL 20700 NC HWY 88 W, CRESTON,
NC 28615
7220 DENLEE RD
RALEIGH, NC 27603
Potable Water,
Spring 440 Northwest
WSW-11 ARTHUR EUGENE & TRULA WARD 239 GREEN VALLEY RD,
CRESTON, NC 28615
749 GREEN VALLEY RD
CRESTON, NC 28615
Potable Water,
Spring 1,250 Northwest
1 of 1
BenzeneTolueneEthylbenzeneTotal XylenesMethyl-tert-Butyl EtherIsopropyl EtherElthylene DibromideNapthaleneAcetonen-Butylbenzenesec-Butylbenzenetert-ButylbenzeneChloroformIsopropylbenzenen-Propylbenzene1,2,4-Trimethylbenzene1,3,5-Trimethylbenzene4-IsopropyltolueneLeadC5-C8 AlyphaticsC9-C18 AliphaticsC19-C36 AliphaticsC9-C22 Aromatics1 600 600 500 20 70 0.02 6 6000 70 70 70 70 70 70 400 400 20 15 400 700 10000 200
5000 260000 84500 85500 20000 70000 50 6000 6000000 6900 8500 15000 70000 25000 30000 28500 25000 20000 15000 NE NE NE NE
7/8/1997 ND ND ND ND 1.5 ND NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA
8/11/2011
2/15/2011 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND
8/11/2011 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND NA ND ND ND ND
12/2/2011
6/22/2012 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND NA ND ND ND ND
2/15/2011 ND ND ND ND ND ND ND ND ND ND ND ND 0.71 ND ND ND ND ND 12 ND ND ND ND
8/11/2011 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND NA ND ND ND ND
12/2/2011 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND NA NA NA NA NA
6/22/2012 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND NA ND ND ND ND
1/29/2013 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND NA ND ND ND ND
10/29/2014 <0.079 <0.090 <0.092 <0.29 <0.090 <0.18 <0.089 <0.12 <4.7 <0.054 <0.084 <0.096 <0.14 <0.11 <0.094 <0.18 <0.10 <0.12 NA NA NA NA NA
8/9/2017 <0.12 <0.17 <0.13 <0.39 <0.090 <0.18 <0.15 <0.12 <4.9 <0.15 <0.13 <0.12 <0.22 <0.12 <0.13 <0.18 <0.13 <0.15 NA NA NA NA NA
3/19/2019
2/15/2011 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND
8/11/2011 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND NA ND ND ND ND
12/2/2011 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND NA NA NA NA NA
6/22/2012 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND NA NA NA NA NA
10/29/2014 <0.079 <0.090 <0.092 <0.29 <0.090 <0.18 <0.089 <0.12 <4.7 <0.054 <0.084 <0.096 <0.14 <0.11 <0.094 <0.18 <0.10 <0.12 NA NA NA NA NA
8/9/2017
3/19/2019 <0.19 <0.14 <0.13 <0.47 <0.25 <0.17 <0.19 <0.31 <3.8 <0.21 <0.19 <0.17 <0.17 <0.17 <0.13 <0.18 <0.14 <0.20 NA NA NA NA NA
12/2/2011
6/22/2012
1/19/2013
10/29/2014 <0.079 <0.090 <0.092 <0.29 <0.090 <0.18 <0.089 <0.12 <4.7 <0.054 <0.084 <0.096 <0.14 <0.11 <0.094 <0.18 <0.10 <0.12 NA NA NA NA NA
8/9/2017 <0.12 <0.17 <0.13 <0.39 <0.090 <0.18 <0.15 <0.12 <4.9 <0.15 <0.13 <0.12 <0.22 <0.12 <0.13 <0.18 <0.13 <0.15 NA NA NA NA NA
3/19/2019 <0.19 <0.14 <0.13 <0.47 <0.25 <0.17 <0.19 <0.31 <3.8 <0.21 <0.19 <0.17 <0.17 <0.17 <0.13 <0.18 <0.14 <0.20 NA NA NA NA NA
Notes:
All measurements in micrograms per liter (μg/L)Bold indicates values exceeding the North Carolina 15A NCAC 02L .0202 Groundwater Standards (2L Standards)
J = Estimated value below method reporting limit Yellow indicates values exceeding the Gross Contamination Levels (GCLs)
ND = Not detected at or above the laboratory detection limit VPH AND EPH concentrations calculated using the NCDEQ Table 10 Worksheet for
NA = Not Analyzed Calculating MADEP Groundwater Sample Results using unadjusted laboratory data to determine applicable standards
NS = Not Sampled -- = Constituent not reported
LNAPL = Light Non-Aqueous Phase Liquid
Page 3 of 3 1,2-DichloroethaneWSW-1
WSW-3
WSW-6
WSW-7
<0.19
<0.41
0.4
400
<0.41
NOT SAMPLED - SITE UNOCCUPIED - NO POWER
NOT SAMPLED - SITE UNOCCUPIED - NO POWER
NOT SAMPLED - SITE UNOCCUPIED - NO POWER
<0.19
ND
ND
ND
<0.19
NOT SAMPLED - OCCUPANT ABSENT
WSW-8
Well ID Sample
Date
Table 2
Historical Water Supply Well Analytical Results
Stephens Exxon
20655 US Highway 88 West
Creston, Ashe County, North Carolina
NCDEQ Incident No. 16457
Terracon Project No. 75207132
NOT SAMPLED
NOT SAMPLED
ND
ND
Concentrations in ug/L
2L Standard
GCL Standard
ND
ND
ND
ND
ND
ND
ND
<0.19
<0.19
NOT SAMPLED - OCCUPANT ABSENT
ND
Table 3
Monitoring Well Construction Information and Water Level Measurements
Stephens Exxon
20655 US Highway 88 West
Creston, Ashe County, North Carolina
NCDEQ Incident No. 16457
Terracon Project No. 75207132
Well ID Date Installed
(m/dd/yyyy)
Well Casing
Depth (ft. BGS)
Screen Interval
(ft. BGS)
Depth of Well
(ft. BGS)
Relative Top of
Casing Elevation
Date Water
Level Measured
Depth to Water
from Top of
Casing (ft.)
LNAPL
Thickness (ft.)
Groundwater
Elevation*Comments
7/8/1997 8.49 --91.51
3/6/1998 8.01 --91.99
1/25/1999 7.87 --92.13
6/22/2012 6.62 --93.38
10/29/2014 NM --NM
8/9/2017 NM --NM
10/9/2019
7/8/1997 5.19 --95.12
3/6/1998 4.33 --95.98
1/25/1999 4.48 --95.83
4/27/2004 3.76 --96.55
2/14/2011 4.65 --95.66
10/29/2014 4.35 --95.96
8/9/2017 3.94 --96.37
3/19/2019 2.66 --97.65
10/9/2019 4.82 --95.49
7/8/1997 4.03 --96.36
3/6/1998 3.58 --96.81
1/25/1999 3.62 --96.77
4/27/2004 3.01 --97.38
2/15/2011 4.3 --96.09
12/2/2011 3.76 --96.63
6/22/2012 4.2 --96.19
1/29/2013 2.98 --97.41
10/29/2014 3.99 --96.40
8/9/2017 3.38 --97.01
3/19/2019 3.44 --96.95
10/9/2019 4.32 --96.07
7/8/1997 9.51 --90.96
3/6/1998 8.42 --92.05
1/25/1999 8.3 --92.17
4/27/2004 8.14 --92.33
2/15/2011 8.62 --91.85
8/11/2011 9.65 --90.82
12/2/2011 7.14 --93.33
6/22/2012 8.65 --91.82
1/29/2013 6.08 --94.39
10/29/2014 8.61 --91.86
8/9/2017 8.67 --91.80
3/19/2019 8.12 --92.35
10/9/2019 9.35 --91.12
7/8/1997 12.66 --88.91
3/6/1998 12.64 --88.93
1/25/1999 11.75 --89.82
4/27/2004 12.02 --89.55
2/15/2011 NM --NM
8/11/2011 NM --NM
12/2/2011
10/29/2014 10.69 90.88 90.88
8/9/2017 NM --NM
8/9/2017 9.65 --91.44
10/9/2019 10.48 --90.61
9/26/2021 NM --NM
Type II
Type II
Not located
Not located
Type II
Type II
Type II
Type II
5.1 5.1 - 15.1 15.1 100.00
MW-2 5.3 5.3 - 15.3 15.3 100.31
MW-3
MW-4
MW-5
3/7/1997
3/8/1997
3/8/1997
MW-5R
MW1 10/23/1996
3/14/2019 4 4.0-14.0 14 101.09
3 3.0-11.0 11 100.39
3/8/1997 3.9 3.9-13.9 13.9 100.47
3.6 3.6-13.6 13.6 101.57
1 of 2
Table 3
Monitoring Well Construction Information and Water Level Measurements
Stephens Exxon
20655 US Highway 88 West
Creston, Ashe County, North Carolina
NCDEQ Incident No. 16457
Terracon Project No. 75207132
Well ID Date Installed
(m/dd/yyyy)
Well Casing
Depth (ft. BGS)
Screen Interval
(ft. BGS)
Depth of Well
(ft. BGS)
Relative Top of
Casing Elevation
Date Water
Level Measured
Depth to Water
from Top of
Casing (ft.)
LNAPL
Thickness (ft.)
Groundwater
Elevation*Comments
7/8/1997 10.33 --88.55
3/6/1998 10.92 --87.96
1/25/1999 9.68 --89.20
9/3/2003 9.21 --89.67
2/15/2011 NM --NM
8/11/2011 NM --NM
12/2/2011
10/29/2014
8/9/2017
3/19/2019 6.18 --92.70
10/9/2019
7/8/1997 8.1 --92.94
3/6/1998 7.72 --93.32
1/25/1999 7.36 --93.68
2/15/2011 8.62 --92.42
10/9/2019
3/6/1998 2.57 --83.79
10/9/2019
3/6/1998 2.63 --81.50
1/25/1999 2.7 --81.43
2/15/2011 NM --NM
8/11/2011 NM --NM
12/2/2011 NM --NM
10/29/2014 NM --NM
8/9/2017 NM --NM
10/9/2019
1/25/1999 6.1 --95.44
10/9/2019
4/27/2004 6.27 ----
2/15/2011 11.11 1 89.43
8/8/2011 6.96 0.61 93.24
8/8/2011 9.35 0.02 90.35
8/11/2011 9.36 0.02 90.34
12/2/2011 7.94 --91.74
6/22/2012 8.94 0.21 90.92
1/29/2013 6.99 0.21 92.87
10/29/2014 8.76 0.76 91.57
8/9/2017 8.59 1.18 92.10
3/19/2019 7.89 0.39 92.12
10/9/2019 9.76 1.2 90.95
9/26/2021 NM 0.02 NM
4/27/2004 6.17 --93.35
8/11/2011 7.43 --92.09
12/2/2011 6.19 --93.33
6/22/2012 4.72 --94.80
1/29/2013 4.49 --95.03
10/29/2014 6.04 --93.48
8/9/2017 5.47 --94.05
3/19/2019 3.62 --95.90
10/9/2019 6.2 --93.32
3/19/2019 4.85 --92.72
10/9/2019 6.08 --91.49
9/26/2021 6.3 --91.27
10/9/2019 6.11 --91.28
9/26/2021 5.75 --91.64
10/9/2019 7.8 --92.40
9/26/2021 7.65 --92.55
10/9/2019 0.9 --86.63
9/26/2021 1.25 --86.28
10/9/2019 1.16 --87.73
9/26/2021 1.66 --87.23
Notes:
* = If free product is present in a well, groundwater elevation is calculated by: [Top of Casing Elevation - Depth to Water] + [free product thickness x 0.8581]
BGS = below ground surface
LNAPL = Light Non-Aqueous Phase Liquid
NM = Not Measured
-- = Not Detected
MW-11 7/14/2003 4.0 4.0-14.0 14 99.68 Type II
Not Located
Not located
Not located
Not located
Not located
Not located
Not located
Not located
Type II
Type III
Type II
MW-7 6/4/1997 41.5 41.5-46.5 46.5 101.04
MW-6 3/13/1997 2.4 2.4-13.2 13.2 98.88
MW-9 3/5/1998 2.5 2.5-10.0 10 84.13
MW-8 3/5/1998 2.5 2.5-7.5 7.5
MW-14
MW-15
MW-16
MW-17
10/8/2019
10/8/2019
10/7/2019
10/7/2019
MW-10 1/25/1999
MW-12
MW-13 3/14/2019
7/14/2003
100.2
87.53
88.89
5.0 5.0-15.0 15 99.52
2.0 2.0-12.0 12 97.57
3.0 3.0-13.0
5.0
3.0
5.0-20.0
3.0-10.0
20
20
13
5.0 5.0-15.0 15 97.39
4.0 4.0-14.0 14 101.54
86.36
Type II
Type II
Type II
Type II
Type II
Type II
Type II
Type II
1 of 2
BenzeneTolueneEthylbenzenTotal XylenesMethyl-tert-Butyl EtherIsopropyl EtherElthylene DibromideNapthaleneAcetonen-Butylbenzenesec-Butylbenzenetert-ButylbenzeneChloroform1,2-DichloroethaneIsopropylbenzene4-Isopropylbenzenen-PropylbenzeneStyrene1,2,4-Trimethylbenzene1,3,5-TrimethylbenzeneLeadC5-C8 AlyphaticsC9-C18 AliphaticsC19-C36 AliphaticsC9-C22 Aromatics1 600 600 500 20 70 0.02 6 6000 70 70 70 70 0.4 70 20 70 70 400 400 15 400 700 10000 200500026000084500855002000070000506000600000069008500150007000040025000200003000070000285002500015000NENENENE7/8/1997 408 642 250 843 1773 370 NA NA NA NA NA NA NA 4.2 NA NA NA --NA NA 36 NA NA NA NA3/6/1998 653 1158 512 1436 614 565 NA 101 NA NA NA NA NA NA NA NA NA --NA NA NA NA NA NA NA1/25/1999 NA NA NA NA NA NA NA 66.9 NA NA NA NA NA NA NA NA NA --NA NA NA NA 3862 NA 9476/22/2012 ND ND ND ND ND 5.8 ND ND ND ND ND ND ND ND ND ND ND --ND ND NA NA NA NA NA10/29/20148/9/201710/9/20197/8/1997 ND ND ND ND ND ND NA NA NA NA NA NA NA ND NA NA NA --NA NA ND NA NA NA NA3/6/1998 ND ND ND ND ND ND NA ND NA NA NA NA NA NA NA NA NA --NA NA NA NA NA NA NA1/25/1999 NA NA NA NA NA NA NA ND NA NA NA NA NA NA NA NA NA --NA NA NA NA ND ND ND4/27/2004 ND ND ND ND ND ND NA ND NA NA NA NA NA NA NA NA NA --NA NA NA NA ND ND ND2/15/2011 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND --ND ND ND ND ND ND ND6/22/201210/29/2014 <0.079 <0.090 <0.092 <0.29 <0.090 <0.18 <0.089 <0.12 <4.7 <0.054 <0.084 <0.096 <0.14 <0.19 <0.11 <0.12 <0.094 <0.12 <0.18 <0.10 NA NA NA NA NA8/9/2017 <0.12 <0.17 <0.13 <0.39 <0.090 <0.18 <0.15 <0.12 <4.9 <0.15 <0.13 <0.12 <0.22 <0.19 <0.12 <0.15 <0.13 <0.15 <0.18 <0.13 NA NA NA NA NA3/19/2019 <0.18 <0.14 <0.13 <0.47 <0.25 <0.17 <0.19 <0.31 <3.8 <0.21 <0.16 <0.17 <0.17 <0.41 <0.17 <0.20 <0.13 <0.11 <0.18 <0.14 NA NA NA NA NA10/9/20197/8/1997 ND ND ND ND ND ND NA NA NA NA NA NA NA ND NA NA NA --NA NA ND NA NA NA NA3/6/1998 ND ND ND ND ND ND NA ND NA NA NA NA NA NA NA NA NA --NA NA NA NA NA NA NA1/25/1999 NA NA NA NA NA NA NA ND NA NA NA NA NA NA NA NA NA --NA NA NA NA ND ND ND4/27/2004 ND ND ND ND ND ND NA ND NA NA NA NA NA NA NA NA NA --NA NA NA NA ND ND ND2/15/2011 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND --ND ND 12 ND ND ND ND12/2/2011 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND --ND ND NA NA NA NA NA6/22/2012 ND ND ND ND ND ND ND ND ND ND 0.64 ND ND ND ND ND ND --ND ND NA NA NA NA NA1/29/2013 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND --0.27 J ND NA NA NA NA NA10/29/2014 <0.079 <0.090 <0.092 <0.29 <0.090 <0.18 <0.089 <0.12 10 J <0.054 <0.084 <0.096 <0.14 <0.19 <0.11 <0.12 <0.094 <0.12 <0.18 <0.10 NA NA NA NA NA8/9/2017 <0.12 <0.17 <0.13 <0.39 <0.090 <0.18 <0.15 <0.12 <4.9 <0.15 <0.13 <0.12 <0.22 <0.19 <0.12 <0.15 <0.13 <0.15 <0.18 <0.13 NA NA NA NA NA3/19/2019 <0.18 <0.14 <0.13 <0.47 <0.25 <0.17 <0.19 <0.31 <3.8 0.30 J 0.61 0.23 J <0.17 <0.41 0.48 J <0.20 <0.13 <0.11 0.55 <0.14 NA NA NA NA NA10/9/20197/8/1997 ND ND ND ND ND ND NA NA NA NA NA NA NA ND NA NA NA --NA NA ND NA NA NA NA3/6/1998 ND ND ND ND ND ND NA ND NA NA NA NA NA NA NA NA NA --NA NA NA NA NA NA NA1/25/1999 NA NA NA NA NA NA NA ND NA NA NA NA NA NA NA NA NA --NA NA NA NA 318 396 364/27/2004 ND ND ND ND ND ND NA ND NA NA NA NA NA NA NA NA NA --NA NA NA NA ND ND ND2/15/2011 ND ND ND ND ND ND ND 1.3 2.5 J 0.7 0.55 ND ND ND ND ND ND --3.6 0.8 NA ND 98 J ND 42 J8/11/2011 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND --ND ND NA ND ND ND ND12/2/2011 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND --ND ND NA NA NA NA NA6/22/2012 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND --0.27 J ND NA NA NA NA NA1/29/2013 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND --ND ND NA NA NA NA NA10/29/2014 <0.079 <0.090 <0.092 <0.29 <0.090 <0.18 <0.089 <0.12 <4.7 <0.054 <0.084 <0.096 <0.14 <0.19 <0.11 <0.12 <0.094 <0.12 <0.18 <0.10 NA NA NA NA NA8/9/2017 <0.12 <0.17 <0.13 <0.39 <0.090 <0.18 <0.15 <0.12 <4.9 <0.15 0.13 J <0.12 <0.22 <0.19 <0.12 <0.15 <0.13 <0.15 <0.18 <0.13 NA NA NA NA NA3/19/2019 <0.18 <0.14 <0.13 <0.47 <0.25 <0.17 <0.19 <0.31 7.5 J <0.21 <0.16 <0.17 <0.17 <0.41 <0.17 <0.20 <0.13 <0.11 <0.18 <0.14 NA NA NA NA NA
10/9/2019
Page 1 of 3
Table 4
Summary of Groundwater Analytical Results
Stephens Exxon
20655 US Highway 88 West
Creston, Ashe County, North Carolina
NCDEQ Incident No. 16457
Terracon Project No. 75207132
MW-3
Concentrations in ug/L
2L StandardGCL Standard
MW-1 COULD NOT LOCATECOULD NOT LOCATECOULD NOT LOCATE
NOT SAMPLED
MW-4
NOT SAMPLED
Well ID Sample
Date
MW-2 NOT SAMPLED
NOT SAMPLED
BenzeneTolueneEthylbenzeneTotal XylenesMethyl-tert-Butyl EtherIsopropyl EtherElthylene DibromideNapthaleneAcetonen-Butylbenzenesec-Butylbenzenetert-ButylbenzeneChloroform1,2-DichloroethaneIsopropylbenzene4-Isopropylbenzenen-PropylbenzeneStyrene1,2,4-Trimethylbenzene1,3,5-TrimethylbenzeneLeadC5-C8 AlyphaticsC9-C18 AliphaticsC19-C36 AliphaticsC9-C22 Aromatics1 600 600 500 20 70 0.02 6 6000 70 70 70 70 0.4 70 20 70 70 400 400 15 400 700 10000 200
5000 260000 84500 85500 20000 70000 50 6000 6000000 6900 8500 15000 70000 400 25000 20000 30000 70000 28500 25000 15000 NE NE NE NE
7/8/1997 393 1016 519 1578 96.7 23 NA NA NA NA NA NA NA ND NA NA NA --NA NA ND NA NA NA NA3/6/1998 573 5162 1112 6253 232 127 NA 168 NA NA NA NA NA NA NA NA NA --NA NA NA NA NA NA NA1/25/1999 NA NA NA NA NA NA NA 583 NA NA NA NA NA NA NA NA NA --NA NA NA NA 39091 44 68214/27/2004 243 3580 ND 6270 2299 ND NA 97.9 NA NA NA NA NA NA NA NA NA --NA NA NA 25380 11816 ND 425802/15/20118/11/201112/2/201110/29/2014 42 120 240 1140 4.4 J <3.6 <1.8 110 100 J 110 18 <1.9 4.4 J <3.9 28 17 110 16 690 230 NA NA NA NA NA8/9/20173/19/2019 <7.2 470 2000 7600 <10 <6.8 <7.6 530 <150 350 100 <6.8 <6.8 <16 300 68 1300 51 6400 2000 NA NA NA NA NA
10/08/2019 <2.5 160 682 2360 <2.5 <2.5 <2.5 195 NA <2.5 <2.5 <2.5 <25 <2.5 93 NA <2.5 13.5 1790 543 NA NA NA NA NA9/28/2021 ND 48 249 737 ND ND ND ND ND 16.9 9.4 ND ND ND 42 ND ND 3.93 630 186 NA NA NA NA NA7/8/1997 ND ND ND ND ND ND NA NA NA NA NA NA NA ND NA NA NA --NA NA ND NA NA NA NA3/6/1998 ND ND ND ND 12 ND ND ND NA NA NA NA NA NA NA NA NA --NA NA NA NA NA NA NA1/25/1999 NA NA NA NA NA NA NA ND NA NA NA NA NA NA NA NA NA --NA NA NA NA 62 ND 252/15/20118/11/201112/2/201110/29/20148/9/20173/19/2019 <0.18 <0.14 <0.13 <0.47 1 1.3 <0.19 <0.31 <3.8 <0.21 <0.16 <0.17 <0.17 <0.41 <0.17 <0.20 <0.13 <0.11 <0.18 <0.14 NA NA NA NA NA10/9/20197/8/1997 ND ND ND ND ND ND NA NA NA NA NA NA NA ND NA ND NA --NA NA NA NA NA NA NA1/25/1999 NA NA NA NA NA NA NA ND NA NA NA NA NA NA NA NA NA --NA NA NA NA ND ND 442/15/2011 ND ND ND ND ND ND ND 11 ND 4.9 4 0.61 ND ND 1.1 3 2.8 --34 7.4 ND ND 3930 ND 206010/9/2019
3/6/1998 ND ND ND ND ND ND NA ND NA NA NA NA NA NA NA NA NA --NA NA NA NA NA NA NA
10/9/20193/6/1998 ND ND ND ND ND ND ND 2.7 NA NA NA NA NA NA NA NA NA --NA NA NA NA NA NA NA
1/25/1999 NA NA NA NA NA NA NA ND NA NA NA NA NA NA NA NA NA --NA NA NA NA 45 ND 292/15/20118/11/201112/2/201110/29/20148/9/201710/9/20196/22/2014 NA NA NA NA NA NA NA 6720 NA NA NA NA NA NA NA NA NA NA NA NA NA 56680 83 255610/9/2019
Page 2 of 3
MW-5R
Table 4
Summary of Groundwater Analytical Results
Stephens Exxon
20655 US Highway 88 West
Creston, Ashe County, North Carolina
NCDEQ Incident No. 16457
Terracon Project No. 75207132
Concentrations in ug/L
2L StandardGCL Standard
MW-5 COULD NOT LOCATECOULD NOT LOCATECOULD NOT LOCATE
COULD NOT LOCATE
MW-6 COULD NOT LOCATECOULD NOT LOCATECOULD NOT LOCATECOULD NOT LOCATECOULD NOT LOCATE
COULD NOT LOCATE
COULD NOT LOCATE
COULD NOT LOCATE
MW-7
COULD NOT LOCATE
MW-8 COULD NOT LOCATE
MW-10 COULD NOT LOCATE
Well ID Sample
Date
MW-9
COULD NOT LOCATECOULD NOT LOCATECOULD NOT LOCATECOULD NOT LOCATE
BenzeneTolueneEthylbenzenTotal XylenesMethyl-tert-Butyl EtherIsopropyl EtherElthylene DibromideNapthaleneAcetonen-Butylbenzenesec-Butylbenzenetert-ButylbenzeneChloroform1,2-DichloroethaneIsopropylbenzene4-Isopropylbenzenen-PropylbenzeneStyrene1,2,4-Trimethylbenzene1,3,5-TrimethylbenzeneLeadC5-C8 AlyphaticsC9-C18 AliphaticsC19-C36 AliphaticsC9-C22 Aromatics1 600 600 500 20 70 0.02 6 6000 70 70 70 70 0.4 70 20 70 70 400 400 15 400 700 10000 200
5000 260000 84500 85500 20000 70000 50 6000 6000000 6900 8500 15000 70000 400 25000 20000 30000 70000 28500 25000 15000 NE NE NE NE
4/24/2004 ND 136 ND 318 ND ND NA 180 NA NA NA NA NA NA NA NA NA --NA NA NA NA 28000 ND 114262/15/20118/15/201112/2/2011 ND ND ND 0.93 J ND ND ND 44 ND ND 0.58 3.2 ND ND ND 4.2 ND --190 10 NA NA NA NA NA6/22/20121/29/201310/29/20148/9/20173/19/201910/9/20199/28/20214/24/2004 ND ND ND ND ND 2.7 NA ND NA NA NA NA NA NA NA NA NA --NA NA NA NA NA NA NA02/15/11 ND ND ND ND 1.1 11 ND ND ND ND ND ND ND ND ND ND ND --ND ND 74 49 J ND ND ND08/15/11 ND ND ND ND 0.84 J 6.5 ND ND ND ND ND ND ND ND ND ND ND --ND ND NA NA ND ND ND12/02/11 ND ND ND ND ND 4.5 ND ND ND ND ND ND ND ND ND ND ND --ND ND NA NA NA NA NA06/22/12 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND --ND ND NA NA NA NA NA01/29/13 ND ND ND ND 0.30 J 3.4 ND ND ND ND ND ND ND ND ND ND ND --ND ND NA NA NA NA NA10/29/2014 <0.079 <0.090 <0.092 <0.29 0.27 J 2.2 <0.089 <0.12 37 J <0.054 <0.084 <0.096 <0.14 <0.19 <0.11 <0.12 <0.094 <0.12 <0.18 <0.10 NA NA NA NA NA8/9/2017 <0.12 <0.17 <0.13 <0.39 <0.090 1.5 <0.15 <0.12 <4.9 <0.15 <0.13 <0.12 <0.22 <0.19 <0.12 <0.15 <0.13 <0.15 <0.18 <0.13 NA NA NA NA NA3/19/2019 <0.18 <0.14 <0.13 <0.47 <0.25 6.2 <0.19 <0.31 9.0 J <0.21 <0.16 <0.17 <0.17 <0.41 <0.17 <0.20 <0.13 <0.11 <0.18 <0.14 NA NA NA NA NA10/9/20193/19/2019 <0.18 6 1.7 6.3 <0.25 <0.17 <0.19 3.7 <3.8 2.8 2.7 0.58 <0.17 <0.41 1.3 1.3 2.2 <0.11 20 1.5 NA NA NA NA NA10/08/2019 <0.25 <0.25 <0.25 <0.50 <0.25 <0.25 <2.5 2.2 NA <0.25 2.5 0.55 <2.5 <2.5 0.84 NA 0.87 <0.25 10.9 <0.25 NA NA NA NA NA9/28/2021 ND ND ND ND ND ND ND ND ND 2 3 ND ND ND 1 ND ND ND 14 ND NA NA NA NA NA10/08/2019 <0.25 <0.25 <0.25 <0.50 <0.25 <0.25 <0.25 <1.0 NA <0.25 0.56 <0.25 <2.5 <0.25 <0.25 NA <0.25 <0.25 1 <0.25 NA NA NA NA NA
9/28/2021 ND 48 309 845 ND ND ND ND ND 18 11 ND ND ND 41 ND 158 ND 797 214 NA NA NA NA NA
10/08/2019 0.66 3.1 22.3 64 <0.25 <0.25 <0.25 6.1 NA 1.7 <0.25 <0.25 <2.5 <0.25 1.9 NA <0.25 <0.25 38.7 11.4 NA NA NA NA NA9/28/2021 ND 121 788 1255 ND ND ND ND ND ND ND ND ND ND ND ND 101 ND 584 167 NA NA NA NA NA10/09/2019 0.27J 0.41J 1.8 4.5 <0.25 <0.25 <0.25 <1.0 NA 0.71 <0.25 <0.25 <2.5 <0.25 0.44J NA 1.8 <0.25 8.9 2.6 NA NA NA NA NA9/28/2021 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND NA NA NA NA NA10/09/2019 3.5 14.1 210 487 <1.0 <1.0 <1.0 55.7 NA <1.0 <1.0 <1.0 <10.0 <1.0 17.2 NA 59.2 <1.0 353 74.3 NA NA NA NA NA9/28/2021 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 2 ND NA NA NA NA NATW-1 7/8/1997 35.6 3.8 27.2 2.8 4 39.3 NA NA NA NA NA NA NA NA NA NA NA --NA NA NA NA NA NA NATW-2 7/8/1997 ND ND ND ND ND ND NA NA NA NA NA NA NA NA NA NA NA --NA NA NA NA NA NA NASW-1 10/29/2014 <0.079 <0.090 <0.092 <0.29 <0.090 <0.18 <0.089 <0.12 <4.7 <0.054 <0.084 <0.096 <0.14 <0.19 <0.11 <0.12 <0.094 <0.12 <0.18 <0.10 NA NA NA NA NA
Notes:
All measurements in micrograms per liter (μg/L)Bold indicates values exceeding the North Carolina 15A NCAC 02L .0202 Groundwater Standards (2L Standards)
J = Estimated value below method reporting limit Yellow indicates values exceeding the Gross Contamination Levels (GCLs)
ND = Not detected at or above the laboratory detection limit VPH AND EPH concentrations calculated using the NCDEQ Table 10 Worksheet for
NA = Not Analyzed Calculating MADEP Groundwater Sample Results using unadjusted laboratory data to determine applicable standards
NS = Not Sampled -- = Constituent not reported
LNAPL = Light Non-Aqueous Phase Liquid
Page 3 of 3
Table 4
Summary of Groundwater Analytical Results
Stephens Exxon
20655 US Highway 88 West
Creston, Ashe County, North Carolina
NCDEQ Incident No. 16457
Terracon Project No. 75207132
MW-14
MW-15
MW-16
MW-17
MW-11
NOT SAMPLED - LNAPL (1.18 ft)NOT SAMPLED - LNAPL (0.39 ft)NOT SAMPLED - LNAPL (1.20 ft)
MW-13
NOT SAMPLED - LNAPL (0.02 ft)
NOT SAMPLEDNOT SAMPLED
NOT SAMPLED - LNAPL (0.21 ft)NOT SAMPLED - LNAPL (0.21 ft)NOT SAMPLED - LNAPL (0.76 ft)
MW-12
NOT SAMPLED
Well ID Sample
Date
Concentrations in ug/L
2L StandardGCL Standard

APPENDIX A
FIELD NOTES

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

ANALYTICAL REPORT
October 19, 2021
Terracon - Greensboro, NC
Sample Delivery Group:L1411013
Samples Received:09/29/2021
Project Number:75207132
Description:Stephens Exxon
Report To:Jared Rose
7327-G, West Friendly Ave
Greensboro, NC 27410
Entire Report Reviewed By:
October 19, 2021
[Preliminary Report]
Heather J Wagner
Project Manager
Results relate only to the items tested or calibrated and are reported as rounded values. This test report shall not be reproduced, except in full, without written approval of the laboratory. Where applicable, sampling conducted by Pace Analytical National is performed per guidance provided in laboratory standard operating procedures ENV-SOP-MTJL-0067 and ENV-SOP-MTJL-0068. Where sampling conducted by the customer, results relate to the accuracy of the information provided, and as the samples are received.
Pace Analytical National
12065 Lebanon Rd Mount Juliet, TN 37122 615-758-5858 800-767-5859 www.pacenational.com
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
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October 19, 2021
Heather J Wagner
Project Manager
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
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TABLE OF CONTENTS
Cp: Cover Page 1
Tc: Table of Contents 2
Ss: Sample Summary 3
Cn: Case Narrative 4
Sr: Sample Results 5
MW-5R L1411013-01 5
MW-13 L1411013-02 7
MW-14 L1411013-03 9
MW-15 L1411013-04 11
MW-16 L1411013-05 13
MW-17 L1411013-06 15
FB-01 L1411013-07 17
Qc: Quality Control Summary 19
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 19
Gl: Glossary of Terms 37
Al: Accreditations & Locations 38
Sc: Sample Chain of Custody 39
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
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SAMPLE SUMMARY
Collected by Collected date/time Received date/time
MW-5R L1411013-01 GW Aiden Hodge 09/26/21 13:45 09/29/21 09:30
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 WG1755427 1 10/12/21 14:53 10/12/21 14:53 ACG Mt. Juliet, TN
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 WG1755751 20 10/14/21 00:32 10/14/21 00:32 BMB Mt. Juliet, TN
Collected by Collected date/time Received date/time
MW-13 L1411013-02 GW Aiden Hodge 09/26/21 12:20 09/29/21 09:30
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 WG1753242 1 10/08/21 12:10 10/08/21 12:10 JAH Mt. Juliet, TN
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 WG1755424 1 10/12/21 15:19 10/12/21 15:19 JAH Mt. Juliet, TN
Collected by Collected date/time Received date/time
MW-14 L1411013-03 GW Aiden Hodge 09/26/21 12:00 09/29/21 09:30
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 WG1755427 10 10/12/21 15:14 10/12/21 15:14 ACG Mt. Juliet, TN
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 WG1755751 10 10/14/21 00:53 10/14/21 00:53 BMB Mt. Juliet, TN
Collected by Collected date/time Received date/time
MW-15 L1411013-04 GW Aiden Hodge 09/26/21 13:25 09/29/21 09:30
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 WG1753242 100 10/08/21 22:50 10/08/21 22:50 JAH Mt. Juliet, TN
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 WG1755424 100 10/12/21 15:40 10/12/21 15:40 JAH Mt. Juliet, TN
Collected by Collected date/time Received date/time
MW-16 L1411013-05 GW Aiden Hodge 09/26/21 12:45 09/29/21 09:30
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 WG1757674 1 10/15/21 15:32 10/15/21 15:32 ACG Mt. Juliet, TN
Collected by Collected date/time Received date/time
MW-17 L1411013-06 GW Aiden Hodge 09/26/21 13:05 09/29/21 09:30
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 WG1754214 1 10/09/21 12:31 10/09/21 12:31 BMB Mt. Juliet, TN
Collected by Collected date/time Received date/time
FB-01 L1411013-07 GW Aiden Hodge 09/26/21 16:00 09/29/21 09:30
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 WG1754214 1 10/09/21 12:09 10/09/21 12:09 BMB Mt. Juliet, TN
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
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CASE NARRATIVE
All sample aliquots were received at the correct temperature, in the proper containers, with the
appropriate preservatives, and within method specified holding times, unless qualified or notated within
the report. Where applicable, all MDL (LOD) and RDL (LOQ) values reported for environmental samples
have been corrected for the dilution factor used in the analysis. All Method and Batch Quality Control
are within established criteria except where addressed in this case narrative, a non-conformance form
or properly qualified within the sample results. By my digital signature below, I affirm to the best of my
knowledge, all problems/anomalies observed by the laboratory as having the potential to affect the
quality of the data have been identified by the laboratory, and no information or data have been
knowingly withheld that would affect the quality of the data.
[Preliminary Report]
Heather J Wagner
Project Manager
Project Narrative
Method 6200: Samples MW-5R (L1411013-01), MW-13 (L1411013-02), MW-14 (L1411013-03), MW-15 (L1411013-04) were analyzed out of
hold due to failing internal standard in the initial in hold run. Sample MW-16 (L1411013-05) was analyzed out of hold due to being
overdiluted in the intial in hold run.
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
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Heather J Wagner
Project Manager
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
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SAMPLE RESULTS - 01
L1411013
MW-5R
Collected date/time: 09/26/21 13:45
Volatile Organic Compounds (GC/MS) by Method 6200B-2011
Result Qualifier RDL Dilution Analysis Batch
Analyte ug/l ug/l date / time
Acetone ND Q 50.0 1 10/12/2021 14:53 WG1755427
Acrolein ND J4 Q 1000 20 10/14/2021 00:32 WG1755751
Acrylonitrile ND Q 10.0 1 10/12/2021 14:53 WG1755427
Benzene ND Q 1.00 1 10/12/2021 14:53 WG1755427
Bromobenzene ND Q 1.00 1 10/12/2021 14:53 WG1755427
Bromodichloromethane ND Q 1.00 1 10/12/2021 14:53 WG1755427
Bromoform ND Q 1.00 1 10/12/2021 14:53 WG1755427
Bromomethane ND Q 5.00 1 10/12/2021 14:53 WG1755427
n-Butylbenzene 16.9 Q 1.00 1 10/12/2021 14:53 WG1755427
sec-Butylbenzene 9.40 Q 1.00 1 10/12/2021 14:53 WG1755427
tert-Butylbenzene ND Q 1.00 1 10/12/2021 14:53 WG1755427
Carbon tetrachloride ND Q 1.00 1 10/12/2021 14:53 WG1755427
Chlorobenzene ND Q 1.00 1 10/12/2021 14:53 WG1755427
Chlorodibromomethane ND Q 1.00 1 10/12/2021 14:53 WG1755427
Chloroethane ND Q 5.00 1 10/12/2021 14:53 WG1755427
Chloroform ND Q 5.00 1 10/12/2021 14:53 WG1755427
Chloromethane ND Q 2.50 1 10/12/2021 14:53 WG1755427
2-Chlorotoluene ND Q 1.00 1 10/12/2021 14:53 WG1755427
4-Chlorotoluene ND Q 1.00 1 10/12/2021 14:53 WG1755427
1,2-Dibromo-3-Chloropropane ND Q 5.00 1 10/12/2021 14:53 WG1755427
1,2-Dibromoethane ND Q 1.00 1 10/12/2021 14:53 WG1755427
Dibromomethane ND Q 1.00 1 10/12/2021 14:53 WG1755427
1,2-Dichlorobenzene ND Q 1.00 1 10/12/2021 14:53 WG1755427
1,3-Dichlorobenzene ND Q 1.00 1 10/12/2021 14:53 WG1755427
1,4-Dichlorobenzene ND Q 1.00 1 10/12/2021 14:53 WG1755427
Dichlorodifluoromethane ND Q 5.00 1 10/12/2021 14:53 WG1755427
1,1-Dichloroethane ND Q 1.00 1 10/12/2021 14:53 WG1755427
1,2-Dichloroethane ND Q 1.00 1 10/12/2021 14:53 WG1755427
1,1-Dichloroethene ND Q 1.00 1 10/12/2021 14:53 WG1755427
cis-1,2-Dichloroethene ND Q 1.00 1 10/12/2021 14:53 WG1755427
trans-1,2-Dichloroethene ND Q 1.00 1 10/12/2021 14:53 WG1755427
1,2-Dichloropropane ND Q 1.00 1 10/12/2021 14:53 WG1755427
1,1-Dichloropropene ND Q 1.00 1 10/12/2021 14:53 WG1755427
1,3-Dichloropropane ND Q 1.00 1 10/12/2021 14:53 WG1755427
2,2-Dichloropropane ND J4 Q 1.00 1 10/12/2021 14:53 WG1755427
Di-isopropyl ether ND Q 1.00 1 10/12/2021 14:53 WG1755427
Ethylbenzene 249 Q 20.0 20 10/14/2021 00:32 WG1755751
Hexachloro-1,3-butadiene ND Q 1.00 1 10/12/2021 14:53 WG1755427
Isopropylbenzene 42.4 Q 1.00 1 10/12/2021 14:53 WG1755427
p-Isopropyltoluene 5.64 Q 1.00 1 10/12/2021 14:53 WG1755427
2-Butanone (MEK)ND Q 10.0 1 10/12/2021 14:53 WG1755427
Methylene Chloride ND Q 5.00 1 10/12/2021 14:53 WG1755427
4-Methyl-2-pentanone (MIBK)ND Q 10.0 1 10/12/2021 14:53 WG1755427
Methyl tert-butyl ether ND Q 1.00 1 10/12/2021 14:53 WG1755427
Naphthalene ND Q 100 20 10/14/2021 00:32 WG1755751
n-Propylbenzene 140 Q 1.00 1 10/12/2021 14:53 WG1755427
Styrene 3.93 Q 1.00 1 10/12/2021 14:53 WG1755427
1,1,1,2-Tetrachloroethane ND Q 1.00 1 10/12/2021 14:53 WG1755427
1,1,2,2-Tetrachloroethane ND Q 1.00 1 10/12/2021 14:53 WG1755427
Tetrachloroethene ND Q 1.00 1 10/12/2021 14:53 WG1755427
Toluene 48.3 Q 1.00 1 10/12/2021 14:53 WG1755427
1,2,3-Trichlorobenzene ND Q 1.00 1 10/12/2021 14:53 WG1755427
1,2,4-Trichlorobenzene ND Q 1.00 1 10/12/2021 14:53 WG1755427
1,1,1-Trichloroethane ND Q 1.00 1 10/12/2021 14:53 WG1755427
1,1,2-Trichloroethane ND Q 1.00 1 10/12/2021 14:53 WG1755427
Trichloroethene ND Q 1.00 1 10/12/2021 14:53 WG1755427
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Terracon - Greensboro, NC 75207132 L1411013 10/19/21 11:53 5 of 39
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Terracon - Greensboro, NC 75207132 L1411013 10/19/21 11:58 5 of 39
SAMPLE RESULTS - 01
L1411013
MW-5R
Collected date/time: 09/26/21 13:45
Volatile Organic Compounds (GC/MS) by Method 6200B-2011
Result Qualifier RDL Dilution Analysis Batch
Analyte ug/l ug/l date / time
Trichlorofluoromethane ND Q 5.00 1 10/12/2021 14:53 WG1755427
1,2,3-Trichloropropane ND Q 2.50 1 10/12/2021 14:53 WG1755427
1,2,4-Trimethylbenzene 630 Q 20.0 20 10/14/2021 00:32 WG1755751
1,3,5-Trimethylbenzene 186 Q 1.00 1 10/12/2021 14:53 WG1755427
Vinyl chloride ND Q 1.00 1 10/12/2021 14:53 WG1755427
o-Xylene 150 Q 1.00 1 10/12/2021 14:53 WG1755427
m&p-Xylenes 587 Q 40.0 20 10/14/2021 00:32 WG1755751
(S) Toluene-d8 107 80.0-120 10/12/2021 14:53 WG1755427
(S) Toluene-d8 98.6 80.0-120 10/14/2021 00:32 WG1755751
(S) 4-Bromofluorobenzene 112 77.0-126 10/12/2021 14:53 WG1755427
(S) 4-Bromofluorobenzene 92.9 77.0-126 10/14/2021 00:32 WG1755751
(S) 1,2-Dichloroethane-d4 114 70.0-130 10/12/2021 14:53 WG1755427
(S) 1,2-Dichloroethane-d4 109 70.0-130 10/14/2021 00:32 WG1755751
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Terracon - Greensboro, NC 75207132 L1411013 10/19/21 11:53 6 of 39
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Terracon - Greensboro, NC 75207132 L1411013 10/19/21 11:58 6 of 39
SAMPLE RESULTS - 02
L1411013
MW-13
Collected date/time: 09/26/21 12:20
Volatile Organic Compounds (GC/MS) by Method 6200B-2011
Result Qualifier RDL Dilution Analysis Batch
Analyte ug/l ug/l date / time
Acetone ND 50.0 1 10/08/2021 12:10 WG1753242
Acrolein ND Q 50.0 1 10/12/2021 15:19 WG1755424
Acrylonitrile ND 10.0 1 10/08/2021 12:10 WG1753242
Benzene ND 1.00 1 10/08/2021 12:10 WG1753242
Bromobenzene ND 1.00 1 10/08/2021 12:10 WG1753242
Bromodichloromethane ND 1.00 1 10/08/2021 12:10 WG1753242
Bromoform ND 1.00 1 10/08/2021 12:10 WG1753242
Bromomethane ND 5.00 1 10/08/2021 12:10 WG1753242
n-Butylbenzene 1.64 1.00 1 10/08/2021 12:10 WG1753242
sec-Butylbenzene 2.73 1.00 1 10/08/2021 12:10 WG1753242
tert-Butylbenzene ND 1.00 1 10/08/2021 12:10 WG1753242
Carbon tetrachloride ND 1.00 1 10/08/2021 12:10 WG1753242
Chlorobenzene ND 1.00 1 10/08/2021 12:10 WG1753242
Chlorodibromomethane ND 1.00 1 10/08/2021 12:10 WG1753242
Chloroethane ND 5.00 1 10/08/2021 12:10 WG1753242
Chloroform ND 5.00 1 10/08/2021 12:10 WG1753242
Chloromethane ND 2.50 1 10/08/2021 12:10 WG1753242
2-Chlorotoluene ND 1.00 1 10/08/2021 12:10 WG1753242
4-Chlorotoluene ND 1.00 1 10/08/2021 12:10 WG1753242
1,2-Dibromo-3-Chloropropane ND 5.00 1 10/08/2021 12:10 WG1753242
1,2-Dibromoethane ND 1.00 1 10/08/2021 12:10 WG1753242
Dibromomethane ND 1.00 1 10/08/2021 12:10 WG1753242
1,2-Dichlorobenzene ND 1.00 1 10/08/2021 12:10 WG1753242
1,3-Dichlorobenzene ND 1.00 1 10/08/2021 12:10 WG1753242
1,4-Dichlorobenzene ND 1.00 1 10/08/2021 12:10 WG1753242
Dichlorodifluoromethane ND 5.00 1 10/08/2021 12:10 WG1753242
1,1-Dichloroethane ND 1.00 1 10/08/2021 12:10 WG1753242
1,2-Dichloroethane ND 1.00 1 10/08/2021 12:10 WG1753242
1,1-Dichloroethene ND 1.00 1 10/08/2021 12:10 WG1753242
cis-1,2-Dichloroethene ND 1.00 1 10/08/2021 12:10 WG1753242
trans-1,2-Dichloroethene ND 1.00 1 10/08/2021 12:10 WG1753242
1,2-Dichloropropane ND 1.00 1 10/08/2021 12:10 WG1753242
1,1-Dichloropropene ND 1.00 1 10/08/2021 12:10 WG1753242
1,3-Dichloropropane ND 1.00 1 10/08/2021 12:10 WG1753242
2,2-Dichloropropane ND 1.00 1 10/08/2021 12:10 WG1753242
Di-isopropyl ether ND 1.00 1 10/08/2021 12:10 WG1753242
Ethylbenzene ND 1.00 1 10/08/2021 12:10 WG1753242
Hexachloro-1,3-butadiene ND 1.00 1 10/08/2021 12:10 WG1753242
Isopropylbenzene 1.09 1.00 1 10/08/2021 12:10 WG1753242
p-Isopropyltoluene 1.02 1.00 1 10/08/2021 12:10 WG1753242
2-Butanone (MEK)ND 10.0 1 10/08/2021 12:10 WG1753242
Methylene Chloride ND 5.00 1 10/08/2021 12:10 WG1753242
4-Methyl-2-pentanone (MIBK)ND 10.0 1 10/08/2021 12:10 WG1753242
Methyl tert-butyl ether ND 1.00 1 10/08/2021 12:10 WG1753242
Naphthalene ND 5.00 1 10/08/2021 12:10 WG1753242
n-Propylbenzene ND 1.00 1 10/08/2021 12:10 WG1753242
Styrene ND 1.00 1 10/08/2021 12:10 WG1753242
1,1,1,2-Tetrachloroethane ND 1.00 1 10/08/2021 12:10 WG1753242
1,1,2,2-Tetrachloroethane ND 1.00 1 10/08/2021 12:10 WG1753242
Tetrachloroethene ND 1.00 1 10/08/2021 12:10 WG1753242
Toluene ND 1.00 1 10/08/2021 12:10 WG1753242
1,2,3-Trichlorobenzene ND 1.00 1 10/08/2021 12:10 WG1753242
1,2,4-Trichlorobenzene ND 1.00 1 10/08/2021 12:10 WG1753242
1,1,1-Trichloroethane ND 1.00 1 10/08/2021 12:10 WG1753242
1,1,2-Trichloroethane ND 1.00 1 10/08/2021 12:10 WG1753242
Trichloroethene ND 1.00 1 10/08/2021 12:10 WG1753242
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Terracon - Greensboro, NC 75207132 L1411013 10/19/21 11:53 7 of 39
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Terracon - Greensboro, NC 75207132 L1411013 10/19/21 11:58 7 of 39
SAMPLE RESULTS - 02
L1411013
MW-13
Collected date/time: 09/26/21 12:20
Volatile Organic Compounds (GC/MS) by Method 6200B-2011
Result Qualifier RDL Dilution Analysis Batch
Analyte ug/l ug/l date / time
Trichlorofluoromethane ND 5.00 1 10/08/2021 12:10 WG1753242
1,2,3-Trichloropropane ND 2.50 1 10/08/2021 12:10 WG1753242
1,2,4-Trimethylbenzene 14.4 1.00 1 10/08/2021 12:10 WG1753242
1,3,5-Trimethylbenzene ND 1.00 1 10/08/2021 12:10 WG1753242
Vinyl chloride ND 1.00 1 10/08/2021 12:10 WG1753242
o-Xylene ND 1.00 1 10/08/2021 12:10 WG1753242
m&p-Xylenes ND 2.00 1 10/08/2021 12:10 WG1753242
(S) Toluene-d8 110 80.0-120 10/08/2021 12:10 WG1753242
(S) Toluene-d8 97.2 80.0-120 10/12/2021 15:19 WG1755424
(S) 4-Bromofluorobenzene 104 77.0-126 10/08/2021 12:10 WG1753242
(S) 4-Bromofluorobenzene 95.9 77.0-126 10/12/2021 15:19 WG1755424
(S) 1,2-Dichloroethane-d4 105 70.0-130 10/08/2021 12:10 WG1753242
(S) 1,2-Dichloroethane-d4 108 70.0-130 10/12/2021 15:19 WG1755424
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Terracon - Greensboro, NC 75207132 L1411013 10/19/21 11:53 8 of 39
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Terracon - Greensboro, NC 75207132 L1411013 10/19/21 11:58 8 of 39
SAMPLE RESULTS - 03
L1411013
MW-14
Collected date/time: 09/26/21 12:00
Volatile Organic Compounds (GC/MS) by Method 6200B-2011
Result Qualifier RDL Dilution Analysis Batch
Analyte ug/l ug/l date / time
Acetone ND Q 500 10 10/12/2021 15:14 WG1755427
Acrolein ND J4 Q 500 10 10/14/2021 00:53 WG1755751
Acrylonitrile ND Q 100 10 10/12/2021 15:14 WG1755427
Benzene ND Q 10.0 10 10/12/2021 15:14 WG1755427
Bromobenzene ND Q 10.0 10 10/12/2021 15:14 WG1755427
Bromodichloromethane ND Q 10.0 10 10/12/2021 15:14 WG1755427
Bromoform ND Q 10.0 10 10/12/2021 15:14 WG1755427
Bromomethane ND Q 50.0 10 10/12/2021 15:14 WG1755427
n-Butylbenzene 18.2 Q 10.0 10 10/12/2021 15:14 WG1755427
sec-Butylbenzene 10.9 Q 10.0 10 10/12/2021 15:14 WG1755427
tert-Butylbenzene ND Q 10.0 10 10/12/2021 15:14 WG1755427
Carbon tetrachloride ND Q 10.0 10 10/12/2021 15:14 WG1755427
Chlorobenzene ND Q 10.0 10 10/12/2021 15:14 WG1755427
Chlorodibromomethane ND Q 10.0 10 10/12/2021 15:14 WG1755427
Chloroethane ND Q 50.0 10 10/12/2021 15:14 WG1755427
Chloroform ND Q 50.0 10 10/12/2021 15:14 WG1755427
Chloromethane ND Q 25.0 10 10/12/2021 15:14 WG1755427
2-Chlorotoluene ND Q 10.0 10 10/12/2021 15:14 WG1755427
4-Chlorotoluene ND Q 10.0 10 10/12/2021 15:14 WG1755427
1,2-Dibromo-3-Chloropropane ND Q 50.0 10 10/12/2021 15:14 WG1755427
1,2-Dibromoethane ND Q 10.0 10 10/12/2021 15:14 WG1755427
Dibromomethane ND Q 10.0 10 10/12/2021 15:14 WG1755427
1,2-Dichlorobenzene ND Q 10.0 10 10/12/2021 15:14 WG1755427
1,3-Dichlorobenzene ND Q 10.0 10 10/12/2021 15:14 WG1755427
1,4-Dichlorobenzene ND Q 10.0 10 10/12/2021 15:14 WG1755427
Dichlorodifluoromethane ND Q 50.0 10 10/12/2021 15:14 WG1755427
1,1-Dichloroethane ND Q 10.0 10 10/12/2021 15:14 WG1755427
1,2-Dichloroethane ND Q 10.0 10 10/12/2021 15:14 WG1755427
1,1-Dichloroethene ND Q 10.0 10 10/12/2021 15:14 WG1755427
cis-1,2-Dichloroethene ND Q 10.0 10 10/12/2021 15:14 WG1755427
trans-1,2-Dichloroethene ND Q 10.0 10 10/12/2021 15:14 WG1755427
1,2-Dichloropropane ND Q 10.0 10 10/12/2021 15:14 WG1755427
1,1-Dichloropropene ND Q 10.0 10 10/12/2021 15:14 WG1755427
1,3-Dichloropropane ND Q 10.0 10 10/12/2021 15:14 WG1755427
2,2-Dichloropropane ND J4 Q 10.0 10 10/12/2021 15:14 WG1755427
Di-isopropyl ether ND Q 10.0 10 10/12/2021 15:14 WG1755427
Ethylbenzene 309 Q 10.0 10 10/12/2021 15:14 WG1755427
Hexachloro-1,3-butadiene ND Q 10.0 10 10/12/2021 15:14 WG1755427
Isopropylbenzene 40.9 Q 10.0 10 10/12/2021 15:14 WG1755427
p-Isopropyltoluene ND Q 10.0 10 10/12/2021 15:14 WG1755427
2-Butanone (MEK)ND Q 100 10 10/12/2021 15:14 WG1755427
Methylene Chloride ND Q 50.0 10 10/12/2021 15:14 WG1755427
4-Methyl-2-pentanone (MIBK)ND Q 100 10 10/12/2021 15:14 WG1755427
Methyl tert-butyl ether ND Q 10.0 10 10/12/2021 15:14 WG1755427
Naphthalene ND Q 50.0 10 10/14/2021 00:53 WG1755751
n-Propylbenzene 158 Q 10.0 10 10/12/2021 15:14 WG1755427
Styrene ND Q 10.0 10 10/12/2021 15:14 WG1755427
1,1,1,2-Tetrachloroethane ND Q 10.0 10 10/12/2021 15:14 WG1755427
1,1,2,2-Tetrachloroethane ND Q 10.0 10 10/12/2021 15:14 WG1755427
Tetrachloroethene ND Q 10.0 10 10/12/2021 15:14 WG1755427
Toluene 48.1 Q 10.0 10 10/12/2021 15:14 WG1755427
1,2,3-Trichlorobenzene ND Q 10.0 10 10/12/2021 15:14 WG1755427
1,2,4-Trichlorobenzene ND Q 10.0 10 10/12/2021 15:14 WG1755427
1,1,1-Trichloroethane ND Q 10.0 10 10/12/2021 15:14 WG1755427
1,1,2-Trichloroethane ND Q 10.0 10 10/12/2021 15:14 WG1755427
Trichloroethene ND Q 10.0 10 10/12/2021 15:14 WG1755427
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Terracon - Greensboro, NC 75207132 L1411013 10/19/21 11:53 9 of 39
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Terracon - Greensboro, NC 75207132 L1411013 10/19/21 11:58 9 of 39
SAMPLE RESULTS - 03
L1411013
MW-14
Collected date/time: 09/26/21 12:00
Volatile Organic Compounds (GC/MS) by Method 6200B-2011
Result Qualifier RDL Dilution Analysis Batch
Analyte ug/l ug/l date / time
Trichlorofluoromethane ND Q 50.0 10 10/12/2021 15:14 WG1755427
1,2,3-Trichloropropane ND Q 25.0 10 10/12/2021 15:14 WG1755427
1,2,4-Trimethylbenzene 797 Q 10.0 10 10/12/2021 15:14 WG1755427
1,3,5-Trimethylbenzene 214 Q 10.0 10 10/12/2021 15:14 WG1755427
Vinyl chloride ND Q 10.0 10 10/12/2021 15:14 WG1755427
o-Xylene 149 Q 10.0 10 10/12/2021 15:14 WG1755427
m&p-Xylenes 696 Q 20.0 10 10/12/2021 15:14 WG1755427
(S) Toluene-d8 108 80.0-120 10/12/2021 15:14 WG1755427
(S) Toluene-d8 102 80.0-120 10/14/2021 00:53 WG1755751
(S) 4-Bromofluorobenzene 103 77.0-126 10/12/2021 15:14 WG1755427
(S) 4-Bromofluorobenzene 91.8 77.0-126 10/14/2021 00:53 WG1755751
(S) 1,2-Dichloroethane-d4 104 70.0-130 10/12/2021 15:14 WG1755427
(S) 1,2-Dichloroethane-d4 110 70.0-130 10/14/2021 00:53 WG1755751
Sample Narrative:
L1411013-03 WG1755751: IS/SURR failed on lower dilution.
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Terracon - Greensboro, NC 75207132 L1411013 10/19/21 11:53 10 of 39
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Terracon - Greensboro, NC 75207132 L1411013 10/19/21 11:58 10 of 39
SAMPLE RESULTS - 04
L1411013
MW-15
Collected date/time: 09/26/21 13:25
Volatile Organic Compounds (GC/MS) by Method 6200B-2011
Result Qualifier RDL Dilution Analysis Batch
Analyte ug/l ug/l date / time
Acetone ND 5000 100 10/08/2021 22:50 WG1753242
Acrolein ND Q 5000 100 10/12/2021 15:40 WG1755424
Acrylonitrile ND 1000 100 10/08/2021 22:50 WG1753242
Benzene ND 100 100 10/08/2021 22:50 WG1753242
Bromobenzene ND 100 100 10/08/2021 22:50 WG1753242
Bromodichloromethane ND 100 100 10/08/2021 22:50 WG1753242
Bromoform ND 100 100 10/08/2021 22:50 WG1753242
Bromomethane ND 500 100 10/08/2021 22:50 WG1753242
n-Butylbenzene ND 100 100 10/08/2021 22:50 WG1753242
sec-Butylbenzene ND 100 100 10/08/2021 22:50 WG1753242
tert-Butylbenzene ND 100 100 10/08/2021 22:50 WG1753242
Carbon tetrachloride ND 100 100 10/08/2021 22:50 WG1753242
Chlorobenzene ND 100 100 10/08/2021 22:50 WG1753242
Chlorodibromomethane ND 100 100 10/08/2021 22:50 WG1753242
Chloroethane ND 500 100 10/08/2021 22:50 WG1753242
Chloroform ND 500 100 10/08/2021 22:50 WG1753242
Chloromethane ND 250 100 10/08/2021 22:50 WG1753242
2-Chlorotoluene ND 100 100 10/08/2021 22:50 WG1753242
4-Chlorotoluene ND 100 100 10/08/2021 22:50 WG1753242
1,2-Dibromo-3-Chloropropane ND 500 100 10/08/2021 22:50 WG1753242
1,2-Dibromoethane ND 100 100 10/08/2021 22:50 WG1753242
Dibromomethane ND 100 100 10/08/2021 22:50 WG1753242
1,2-Dichlorobenzene ND 100 100 10/08/2021 22:50 WG1753242
1,3-Dichlorobenzene ND 100 100 10/08/2021 22:50 WG1753242
1,4-Dichlorobenzene ND 100 100 10/08/2021 22:50 WG1753242
Dichlorodifluoromethane ND 500 100 10/08/2021 22:50 WG1753242
1,1-Dichloroethane ND 100 100 10/08/2021 22:50 WG1753242
1,2-Dichloroethane ND 100 100 10/08/2021 22:50 WG1753242
1,1-Dichloroethene ND 100 100 10/08/2021 22:50 WG1753242
cis-1,2-Dichloroethene ND 100 100 10/08/2021 22:50 WG1753242
trans-1,2-Dichloroethene ND 100 100 10/08/2021 22:50 WG1753242
1,2-Dichloropropane ND 100 100 10/08/2021 22:50 WG1753242
1,1-Dichloropropene ND 100 100 10/08/2021 22:50 WG1753242
1,3-Dichloropropane ND 100 100 10/08/2021 22:50 WG1753242
2,2-Dichloropropane ND 100 100 10/08/2021 22:50 WG1753242
Di-isopropyl ether ND 100 100 10/08/2021 22:50 WG1753242
Ethylbenzene 788 100 100 10/08/2021 22:50 WG1753242
Hexachloro-1,3-butadiene ND 100 100 10/08/2021 22:50 WG1753242
Isopropylbenzene ND 100 100 10/08/2021 22:50 WG1753242
p-Isopropyltoluene ND 100 100 10/08/2021 22:50 WG1753242
2-Butanone (MEK)ND 1000 100 10/08/2021 22:50 WG1753242
Methylene Chloride ND 500 100 10/08/2021 22:50 WG1753242
4-Methyl-2-pentanone (MIBK)ND 1000 100 10/08/2021 22:50 WG1753242
Methyl tert-butyl ether ND 100 100 10/08/2021 22:50 WG1753242
Naphthalene ND 500 100 10/08/2021 22:50 WG1753242
n-Propylbenzene 101 100 100 10/08/2021 22:50 WG1753242
Styrene ND 100 100 10/08/2021 22:50 WG1753242
1,1,1,2-Tetrachloroethane ND 100 100 10/08/2021 22:50 WG1753242
1,1,2,2-Tetrachloroethane ND 100 100 10/08/2021 22:50 WG1753242
Tetrachloroethene ND 100 100 10/08/2021 22:50 WG1753242
Toluene 121 100 100 10/08/2021 22:50 WG1753242
1,2,3-Trichlorobenzene ND 100 100 10/08/2021 22:50 WG1753242
1,2,4-Trichlorobenzene ND 100 100 10/08/2021 22:50 WG1753242
1,1,1-Trichloroethane ND 100 100 10/08/2021 22:50 WG1753242
1,1,2-Trichloroethane ND 100 100 10/08/2021 22:50 WG1753242
Trichloroethene ND 100 100 10/08/2021 22:50 WG1753242
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Terracon - Greensboro, NC 75207132 L1411013 10/19/21 11:53 11 of 39
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Terracon - Greensboro, NC 75207132 L1411013 10/19/21 11:58 11 of 39
SAMPLE RESULTS - 04
L1411013
MW-15
Collected date/time: 09/26/21 13:25
Volatile Organic Compounds (GC/MS) by Method 6200B-2011
Result Qualifier RDL Dilution Analysis Batch
Analyte ug/l ug/l date / time
Trichlorofluoromethane ND 500 100 10/08/2021 22:50 WG1753242
1,2,3-Trichloropropane ND 250 100 10/08/2021 22:50 WG1753242
1,2,4-Trimethylbenzene 584 100 100 10/08/2021 22:50 WG1753242
1,3,5-Trimethylbenzene 167 100 100 10/08/2021 22:50 WG1753242
Vinyl chloride ND 100 100 10/08/2021 22:50 WG1753242
o-Xylene 175 100 100 10/08/2021 22:50 WG1753242
m&p-Xylenes 1080 200 100 10/08/2021 22:50 WG1753242
(S) Toluene-d8 105 80.0-120 10/08/2021 22:50 WG1753242
(S) Toluene-d8 102 80.0-120 10/12/2021 15:40 WG1755424
(S) 4-Bromofluorobenzene 98.1 77.0-126 10/08/2021 22:50 WG1753242
(S) 4-Bromofluorobenzene 91.8 77.0-126 10/12/2021 15:40 WG1755424
(S) 1,2-Dichloroethane-d4 105 70.0-130 10/08/2021 22:50 WG1753242
(S) 1,2-Dichloroethane-d4 111 70.0-130 10/12/2021 15:40 WG1755424
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Terracon - Greensboro, NC 75207132 L1411013 10/19/21 11:53 12 of 39
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Terracon - Greensboro, NC 75207132 L1411013 10/19/21 11:58 12 of 39
SAMPLE RESULTS - 05
L1411013
MW-16
Collected date/time: 09/26/21 12:45
Volatile Organic Compounds (GC/MS) by Method 6200B-2011
Result Qualifier RDL Dilution Analysis Batch
Analyte ug/l ug/l date / time
Acetone ND Q 50.0 1 10/15/2021 15:32 WG1757674
Acrolein ND Q 50.0 1 10/15/2021 15:32 WG1757674
Acrylonitrile ND Q 10.0 1 10/15/2021 15:32 WG1757674
Benzene ND Q 1.00 1 10/15/2021 15:32 WG1757674
Bromobenzene ND Q 1.00 1 10/15/2021 15:32 WG1757674
Bromodichloromethane ND Q 1.00 1 10/15/2021 15:32 WG1757674
Bromoform ND Q 1.00 1 10/15/2021 15:32 WG1757674
Bromomethane ND Q 5.00 1 10/15/2021 15:32 WG1757674
n-Butylbenzene ND Q 1.00 1 10/15/2021 15:32 WG1757674
sec-Butylbenzene ND Q 1.00 1 10/15/2021 15:32 WG1757674
tert-Butylbenzene ND Q 1.00 1 10/15/2021 15:32 WG1757674
Carbon tetrachloride ND Q 1.00 1 10/15/2021 15:32 WG1757674
Chlorobenzene ND Q 1.00 1 10/15/2021 15:32 WG1757674
Chlorodibromomethane ND Q 1.00 1 10/15/2021 15:32 WG1757674
Chloroethane ND Q 5.00 1 10/15/2021 15:32 WG1757674
Chloroform ND Q 5.00 1 10/15/2021 15:32 WG1757674
Chloromethane ND Q 2.50 1 10/15/2021 15:32 WG1757674
2-Chlorotoluene ND Q 1.00 1 10/15/2021 15:32 WG1757674
4-Chlorotoluene ND Q 1.00 1 10/15/2021 15:32 WG1757674
1,2-Dibromo-3-Chloropropane ND Q 5.00 1 10/15/2021 15:32 WG1757674
1,2-Dibromoethane ND Q 1.00 1 10/15/2021 15:32 WG1757674
Dibromomethane ND Q 1.00 1 10/15/2021 15:32 WG1757674
1,2-Dichlorobenzene ND Q 1.00 1 10/15/2021 15:32 WG1757674
1,3-Dichlorobenzene ND Q 1.00 1 10/15/2021 15:32 WG1757674
1,4-Dichlorobenzene ND Q 1.00 1 10/15/2021 15:32 WG1757674
Dichlorodifluoromethane ND Q 5.00 1 10/15/2021 15:32 WG1757674
1,1-Dichloroethane ND Q 1.00 1 10/15/2021 15:32 WG1757674
1,2-Dichloroethane ND Q 1.00 1 10/15/2021 15:32 WG1757674
1,1-Dichloroethene ND Q 1.00 1 10/15/2021 15:32 WG1757674
cis-1,2-Dichloroethene ND Q 1.00 1 10/15/2021 15:32 WG1757674
trans-1,2-Dichloroethene ND Q 1.00 1 10/15/2021 15:32 WG1757674
1,2-Dichloropropane ND Q 1.00 1 10/15/2021 15:32 WG1757674
1,1-Dichloropropene ND Q 1.00 1 10/15/2021 15:32 WG1757674
1,3-Dichloropropane ND Q 1.00 1 10/15/2021 15:32 WG1757674
2,2-Dichloropropane ND Q 1.00 1 10/15/2021 15:32 WG1757674
Di-isopropyl ether ND Q 1.00 1 10/15/2021 15:32 WG1757674
Ethylbenzene ND Q 1.00 1 10/15/2021 15:32 WG1757674
Hexachloro-1,3-butadiene ND Q 1.00 1 10/15/2021 15:32 WG1757674
Isopropylbenzene ND Q 1.00 1 10/15/2021 15:32 WG1757674
p-Isopropyltoluene ND Q 1.00 1 10/15/2021 15:32 WG1757674
2-Butanone (MEK)ND Q 10.0 1 10/15/2021 15:32 WG1757674
Methylene Chloride ND Q 5.00 1 10/15/2021 15:32 WG1757674
4-Methyl-2-pentanone (MIBK)ND Q 10.0 1 10/15/2021 15:32 WG1757674
Methyl tert-butyl ether ND Q 1.00 1 10/15/2021 15:32 WG1757674
Naphthalene ND Q 5.00 1 10/15/2021 15:32 WG1757674
n-Propylbenzene ND Q 1.00 1 10/15/2021 15:32 WG1757674
Styrene ND Q 1.00 1 10/15/2021 15:32 WG1757674
1,1,1,2-Tetrachloroethane ND Q 1.00 1 10/15/2021 15:32 WG1757674
1,1,2,2-Tetrachloroethane ND Q 1.00 1 10/15/2021 15:32 WG1757674
Tetrachloroethene ND Q 1.00 1 10/15/2021 15:32 WG1757674
Toluene ND Q 1.00 1 10/15/2021 15:32 WG1757674
1,2,3-Trichlorobenzene ND Q 1.00 1 10/15/2021 15:32 WG1757674
1,2,4-Trichlorobenzene ND Q 1.00 1 10/15/2021 15:32 WG1757674
1,1,1-Trichloroethane ND Q 1.00 1 10/15/2021 15:32 WG1757674
1,1,2-Trichloroethane ND Q 1.00 1 10/15/2021 15:32 WG1757674
Trichloroethene ND Q 1.00 1 10/15/2021 15:32 WG1757674
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Terracon - Greensboro, NC 75207132 L1411013 10/19/21 11:53 13 of 39
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Terracon - Greensboro, NC 75207132 L1411013 10/19/21 11:58 13 of 39
SAMPLE RESULTS - 05
L1411013
MW-16
Collected date/time: 09/26/21 12:45
Volatile Organic Compounds (GC/MS) by Method 6200B-2011
Result Qualifier RDL Dilution Analysis Batch
Analyte ug/l ug/l date / time
Trichlorofluoromethane ND Q 5.00 1 10/15/2021 15:32 WG1757674
1,2,3-Trichloropropane ND Q 2.50 1 10/15/2021 15:32 WG1757674
1,2,4-Trimethylbenzene ND Q 1.00 1 10/15/2021 15:32 WG1757674
1,3,5-Trimethylbenzene ND Q 1.00 1 10/15/2021 15:32 WG1757674
Vinyl chloride ND Q 1.00 1 10/15/2021 15:32 WG1757674
o-Xylene ND Q 1.00 1 10/15/2021 15:32 WG1757674
m&p-Xylenes ND Q 2.00 1 10/15/2021 15:32 WG1757674
(S) Toluene-d8 102 80.0-120 10/15/2021 15:32 WG1757674
(S) 4-Bromofluorobenzene 101 77.0-126 10/15/2021 15:32 WG1757674
(S) 1,2-Dichloroethane-d4 104 70.0-130 10/15/2021 15:32 WG1757674
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Terracon - Greensboro, NC 75207132 L1411013 10/19/21 11:53 14 of 39
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Terracon - Greensboro, NC 75207132 L1411013 10/19/21 11:58 14 of 39
SAMPLE RESULTS - 06
L1411013
MW-17
Collected date/time: 09/26/21 13:05
Volatile Organic Compounds (GC/MS) by Method 6200B-2011
Result Qualifier RDL Dilution Analysis Batch
Analyte ug/l ug/l date / time
Acetone ND 50.0 1 10/09/2021 12:31 WG1754214
Acrolein ND 50.0 1 10/09/2021 12:31 WG1754214
Acrylonitrile ND 10.0 1 10/09/2021 12:31 WG1754214
Benzene ND 1.00 1 10/09/2021 12:31 WG1754214
Bromobenzene ND 1.00 1 10/09/2021 12:31 WG1754214
Bromodichloromethane ND 1.00 1 10/09/2021 12:31 WG1754214
Bromoform ND 1.00 1 10/09/2021 12:31 WG1754214
Bromomethane ND 5.00 1 10/09/2021 12:31 WG1754214
n-Butylbenzene ND 1.00 1 10/09/2021 12:31 WG1754214
sec-Butylbenzene ND 1.00 1 10/09/2021 12:31 WG1754214
tert-Butylbenzene ND 1.00 1 10/09/2021 12:31 WG1754214
Carbon tetrachloride ND 1.00 1 10/09/2021 12:31 WG1754214
Chlorobenzene ND 1.00 1 10/09/2021 12:31 WG1754214
Chlorodibromomethane ND 1.00 1 10/09/2021 12:31 WG1754214
Chloroethane ND 5.00 1 10/09/2021 12:31 WG1754214
Chloroform ND 5.00 1 10/09/2021 12:31 WG1754214
Chloromethane ND 2.50 1 10/09/2021 12:31 WG1754214
2-Chlorotoluene ND 1.00 1 10/09/2021 12:31 WG1754214
4-Chlorotoluene ND 1.00 1 10/09/2021 12:31 WG1754214
1,2-Dibromo-3-Chloropropane ND 5.00 1 10/09/2021 12:31 WG1754214
1,2-Dibromoethane ND 1.00 1 10/09/2021 12:31 WG1754214
Dibromomethane ND 1.00 1 10/09/2021 12:31 WG1754214
1,2-Dichlorobenzene ND 1.00 1 10/09/2021 12:31 WG1754214
1,3-Dichlorobenzene ND 1.00 1 10/09/2021 12:31 WG1754214
1,4-Dichlorobenzene ND 1.00 1 10/09/2021 12:31 WG1754214
Dichlorodifluoromethane ND 5.00 1 10/09/2021 12:31 WG1754214
1,1-Dichloroethane ND 1.00 1 10/09/2021 12:31 WG1754214
1,2-Dichloroethane ND 1.00 1 10/09/2021 12:31 WG1754214
1,1-Dichloroethene ND 1.00 1 10/09/2021 12:31 WG1754214
cis-1,2-Dichloroethene ND 1.00 1 10/09/2021 12:31 WG1754214
trans-1,2-Dichloroethene ND 1.00 1 10/09/2021 12:31 WG1754214
1,2-Dichloropropane ND 1.00 1 10/09/2021 12:31 WG1754214
1,1-Dichloropropene ND 1.00 1 10/09/2021 12:31 WG1754214
1,3-Dichloropropane ND 1.00 1 10/09/2021 12:31 WG1754214
2,2-Dichloropropane ND 1.00 1 10/09/2021 12:31 WG1754214
Di-isopropyl ether ND 1.00 1 10/09/2021 12:31 WG1754214
Ethylbenzene ND 1.00 1 10/09/2021 12:31 WG1754214
Hexachloro-1,3-butadiene ND 1.00 1 10/09/2021 12:31 WG1754214
Isopropylbenzene ND 1.00 1 10/09/2021 12:31 WG1754214
p-Isopropyltoluene ND 1.00 1 10/09/2021 12:31 WG1754214
2-Butanone (MEK)ND 10.0 1 10/09/2021 12:31 WG1754214
Methylene Chloride ND 5.00 1 10/09/2021 12:31 WG1754214
4-Methyl-2-pentanone (MIBK)ND 10.0 1 10/09/2021 12:31 WG1754214
Methyl tert-butyl ether ND 1.00 1 10/09/2021 12:31 WG1754214
Naphthalene ND 5.00 1 10/09/2021 12:31 WG1754214
n-Propylbenzene ND 1.00 1 10/09/2021 12:31 WG1754214
Styrene ND 1.00 1 10/09/2021 12:31 WG1754214
1,1,1,2-Tetrachloroethane ND 1.00 1 10/09/2021 12:31 WG1754214
1,1,2,2-Tetrachloroethane ND 1.00 1 10/09/2021 12:31 WG1754214
Tetrachloroethene ND 1.00 1 10/09/2021 12:31 WG1754214
Toluene ND 1.00 1 10/09/2021 12:31 WG1754214
1,2,3-Trichlorobenzene ND 1.00 1 10/09/2021 12:31 WG1754214
1,2,4-Trichlorobenzene ND 1.00 1 10/09/2021 12:31 WG1754214
1,1,1-Trichloroethane ND 1.00 1 10/09/2021 12:31 WG1754214
1,1,2-Trichloroethane ND 1.00 1 10/09/2021 12:31 WG1754214
Trichloroethene ND 1.00 1 10/09/2021 12:31 WG1754214
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Terracon - Greensboro, NC 75207132 L1411013 10/19/21 11:53 15 of 39
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Terracon - Greensboro, NC 75207132 L1411013 10/19/21 11:58 15 of 39
SAMPLE RESULTS - 06
L1411013
MW-17
Collected date/time: 09/26/21 13:05
Volatile Organic Compounds (GC/MS) by Method 6200B-2011
Result Qualifier RDL Dilution Analysis Batch
Analyte ug/l ug/l date / time
Trichlorofluoromethane ND 5.00 1 10/09/2021 12:31 WG1754214
1,2,3-Trichloropropane ND 2.50 1 10/09/2021 12:31 WG1754214
1,2,4-Trimethylbenzene 1.76 1.00 1 10/09/2021 12:31 WG1754214
1,3,5-Trimethylbenzene ND 1.00 1 10/09/2021 12:31 WG1754214
Vinyl chloride ND 1.00 1 10/09/2021 12:31 WG1754214
o-Xylene ND 1.00 1 10/09/2021 12:31 WG1754214
m&p-Xylenes ND 2.00 1 10/09/2021 12:31 WG1754214
(S) Toluene-d8 106 80.0-120 10/09/2021 12:31 WG1754214
(S) 4-Bromofluorobenzene 100 77.0-126 10/09/2021 12:31 WG1754214
(S) 1,2-Dichloroethane-d4 109 70.0-130 10/09/2021 12:31 WG1754214
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Terracon - Greensboro, NC 75207132 L1411013 10/19/21 11:53 16 of 39
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Terracon - Greensboro, NC 75207132 L1411013 10/19/21 11:58 16 of 39
SAMPLE RESULTS - 07
L1411013
FB-01
Collected date/time: 09/26/21 16:00
Volatile Organic Compounds (GC/MS) by Method 6200B-2011
Result Qualifier RDL Dilution Analysis Batch
Analyte ug/l ug/l date / time
Acetone ND 50.0 1 10/09/2021 12:09 WG1754214
Acrolein ND 50.0 1 10/09/2021 12:09 WG1754214
Acrylonitrile ND 10.0 1 10/09/2021 12:09 WG1754214
Benzene ND 1.00 1 10/09/2021 12:09 WG1754214
Bromobenzene ND 1.00 1 10/09/2021 12:09 WG1754214
Bromodichloromethane ND 1.00 1 10/09/2021 12:09 WG1754214
Bromoform ND 1.00 1 10/09/2021 12:09 WG1754214
Bromomethane ND 5.00 1 10/09/2021 12:09 WG1754214
n-Butylbenzene ND 1.00 1 10/09/2021 12:09 WG1754214
sec-Butylbenzene ND 1.00 1 10/09/2021 12:09 WG1754214
tert-Butylbenzene ND 1.00 1 10/09/2021 12:09 WG1754214
Carbon tetrachloride ND 1.00 1 10/09/2021 12:09 WG1754214
Chlorobenzene ND 1.00 1 10/09/2021 12:09 WG1754214
Chlorodibromomethane ND 1.00 1 10/09/2021 12:09 WG1754214
Chloroethane ND 5.00 1 10/09/2021 12:09 WG1754214
Chloroform ND 5.00 1 10/09/2021 12:09 WG1754214
Chloromethane ND 2.50 1 10/09/2021 12:09 WG1754214
2-Chlorotoluene ND 1.00 1 10/09/2021 12:09 WG1754214
4-Chlorotoluene ND 1.00 1 10/09/2021 12:09 WG1754214
1,2-Dibromo-3-Chloropropane ND 5.00 1 10/09/2021 12:09 WG1754214
1,2-Dibromoethane ND 1.00 1 10/09/2021 12:09 WG1754214
Dibromomethane ND 1.00 1 10/09/2021 12:09 WG1754214
1,2-Dichlorobenzene ND 1.00 1 10/09/2021 12:09 WG1754214
1,3-Dichlorobenzene ND 1.00 1 10/09/2021 12:09 WG1754214
1,4-Dichlorobenzene ND 1.00 1 10/09/2021 12:09 WG1754214
Dichlorodifluoromethane ND 5.00 1 10/09/2021 12:09 WG1754214
1,1-Dichloroethane ND 1.00 1 10/09/2021 12:09 WG1754214
1,2-Dichloroethane ND 1.00 1 10/09/2021 12:09 WG1754214
1,1-Dichloroethene ND 1.00 1 10/09/2021 12:09 WG1754214
cis-1,2-Dichloroethene ND 1.00 1 10/09/2021 12:09 WG1754214
trans-1,2-Dichloroethene ND 1.00 1 10/09/2021 12:09 WG1754214
1,2-Dichloropropane ND 1.00 1 10/09/2021 12:09 WG1754214
1,1-Dichloropropene ND 1.00 1 10/09/2021 12:09 WG1754214
1,3-Dichloropropane ND 1.00 1 10/09/2021 12:09 WG1754214
2,2-Dichloropropane ND 1.00 1 10/09/2021 12:09 WG1754214
Di-isopropyl ether ND 1.00 1 10/09/2021 12:09 WG1754214
Ethylbenzene ND 1.00 1 10/09/2021 12:09 WG1754214
Hexachloro-1,3-butadiene ND 1.00 1 10/09/2021 12:09 WG1754214
Isopropylbenzene ND 1.00 1 10/09/2021 12:09 WG1754214
p-Isopropyltoluene ND 1.00 1 10/09/2021 12:09 WG1754214
2-Butanone (MEK)ND 10.0 1 10/09/2021 12:09 WG1754214
Methylene Chloride ND 5.00 1 10/09/2021 12:09 WG1754214
4-Methyl-2-pentanone (MIBK)ND 10.0 1 10/09/2021 12:09 WG1754214
Methyl tert-butyl ether ND 1.00 1 10/09/2021 12:09 WG1754214
Naphthalene ND 5.00 1 10/09/2021 12:09 WG1754214
n-Propylbenzene ND 1.00 1 10/09/2021 12:09 WG1754214
Styrene ND 1.00 1 10/09/2021 12:09 WG1754214
1,1,1,2-Tetrachloroethane ND 1.00 1 10/09/2021 12:09 WG1754214
1,1,2,2-Tetrachloroethane ND 1.00 1 10/09/2021 12:09 WG1754214
Tetrachloroethene ND 1.00 1 10/09/2021 12:09 WG1754214
Toluene 3.21 B 1.00 1 10/09/2021 12:09 WG1754214
1,2,3-Trichlorobenzene ND 1.00 1 10/09/2021 12:09 WG1754214
1,2,4-Trichlorobenzene ND 1.00 1 10/09/2021 12:09 WG1754214
1,1,1-Trichloroethane ND 1.00 1 10/09/2021 12:09 WG1754214
1,1,2-Trichloroethane ND 1.00 1 10/09/2021 12:09 WG1754214
Trichloroethene ND 1.00 1 10/09/2021 12:09 WG1754214
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Terracon - Greensboro, NC 75207132 L1411013 10/19/21 11:53 17 of 39
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Terracon - Greensboro, NC 75207132 L1411013 10/19/21 11:58 17 of 39
SAMPLE RESULTS - 07
L1411013
FB-01
Collected date/time: 09/26/21 16:00
Volatile Organic Compounds (GC/MS) by Method 6200B-2011
Result Qualifier RDL Dilution Analysis Batch
Analyte ug/l ug/l date / time
Trichlorofluoromethane ND 5.00 1 10/09/2021 12:09 WG1754214
1,2,3-Trichloropropane ND 2.50 1 10/09/2021 12:09 WG1754214
1,2,4-Trimethylbenzene ND 1.00 1 10/09/2021 12:09 WG1754214
1,3,5-Trimethylbenzene ND 1.00 1 10/09/2021 12:09 WG1754214
Vinyl chloride ND 1.00 1 10/09/2021 12:09 WG1754214
o-Xylene ND 1.00 1 10/09/2021 12:09 WG1754214
m&p-Xylenes ND 2.00 1 10/09/2021 12:09 WG1754214
(S) Toluene-d8 106 80.0-120 10/09/2021 12:09 WG1754214
(S) 4-Bromofluorobenzene 101 77.0-126 10/09/2021 12:09 WG1754214
(S) 1,2-Dichloroethane-d4 108 70.0-130 10/09/2021 12:09 WG1754214
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Terracon - Greensboro, NC 75207132 L1411013 10/19/21 11:53 18 of 39
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Terracon - Greensboro, NC 75207132 L1411013 10/19/21 11:58 18 of 39
QUALITY CONTROL SUMMARYWG1753242
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 L1411013-02,04
Method Blank (MB)
(MB) R3715171-3 10/08/21 10:07
MB Result MB Qualifier MB MDL MB RDL
Analyte ug/l ug/l ug/l
Acetone U 11.3 50.0
Acrylonitrile U 0.671 10.0
Benzene U 0.0941 1.00
Bromobenzene U 0.118 1.00
Bromodichloromethane U 0.136 1.00
Bromoform U 0.129 1.00
Bromomethane U 0.605 5.00
n-Butylbenzene U 0.157 1.00
sec-Butylbenzene U 0.125 1.00
tert-Butylbenzene U 0.127 1.00
Carbon tetrachloride U 0.128 1.00
Chlorobenzene U 0.116 1.00
Chlorodibromomethane U 0.140 1.00
Chloroethane U 0.192 5.00
Chloroform U 0.111 5.00
Chloromethane U 0.960 2.50
2-Chlorotoluene U 0.106 1.00
4-Chlorotoluene U 0.114 1.00
1,2-Dibromo-3-Chloropropane U 0.276 5.00
1,2-Dibromoethane U 0.126 1.00
Dibromomethane U 0.122 1.00
1,2-Dichlorobenzene U 0.107 1.00
1,3-Dichlorobenzene U 0.110 1.00
1,4-Dichlorobenzene U 0.120 1.00
Dichlorodifluoromethane U 0.374 5.00
1,1-Dichloroethane U 0.100 1.00
1,2-Dichloroethane U 0.0819 1.00
1,1-Dichloroethene U 0.188 1.00
cis-1,2-Dichloroethene U 0.126 1.00
trans-1,2-Dichloroethene U 0.149 1.00
1,2-Dichloropropane U 0.149 1.00
1,1-Dichloropropene U 0.142 1.00
1,3-Dichloropropane U 0.110 1.00
2,2-Dichloropropane U 0.161 1.00
Di-isopropyl ether U 0.105 1.00
Ethylbenzene U 0.137 1.00
Hexachloro-1,3-butadiene U 0.337 1.00
Isopropylbenzene U 0.105 1.00
p-Isopropyltoluene U 0.120 1.00
2-Butanone (MEK)U 1.19 10.0
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
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QUALITY CONTROL SUMMARYWG1753242
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 L1411013-02,04
Method Blank (MB)
(MB) R3715171-3 10/08/21 10:07
MB Result MB Qualifier MB MDL MB RDL
Analyte ug/l ug/l ug/l
Methylene Chloride U 0.430 5.00
4-Methyl-2-pentanone (MIBK)U 0.478 10.0
Methyl tert-butyl ether U 0.101 1.00
Naphthalene U 1.00 5.00
n-Propylbenzene U 0.0993 1.00
Styrene U 0.118 1.00
1,1,1,2-Tetrachloroethane U 0.147 1.00
1,1,2,2-Tetrachloroethane U 0.133 1.00
Tetrachloroethene U 0.300 1.00
Toluene U 0.278 1.00
1,2,3-Trichlorobenzene U 0.230 1.00
1,2,4-Trichlorobenzene U 0.481 1.00
1,1,1-Trichloroethane U 0.149 1.00
1,1,2-Trichloroethane U 0.158 1.00
Trichloroethene U 0.190 1.00
Trichlorofluoromethane U 0.160 5.00
1,2,3-Trichloropropane U 0.237 2.50
1,2,4-Trimethylbenzene U 0.322 1.00
1,3,5-Trimethylbenzene U 0.104 1.00
Vinyl chloride U 0.234 1.00
o-Xylene U 0.174 1.00
m&p-Xylenes U 0.430 2.00
(S) Toluene-d8 106 80.0-120
(S) 4-Bromofluorobenzene 104 77.0-126
(S) 1,2-Dichloroethane-d4 103 70.0-130
Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD)
(LCS) R3715171-1 10/08/21 09:03 • (LCSD) R3715171-2 10/08/21 09:25
Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits
Analyte ug/l ug/l ug/l %%%%%
Acetone 25.0 24.6 26.1 98.4 104 19.0-160 5.92 27
Acrylonitrile 25.0 25.3 24.4 101 97.6 55.0-149 3.62 20
Benzene 5.00 4.72 4.66 94.4 93.2 70.0-123 1.28 20
Bromobenzene 5.00 5.02 4.75 100 95.0 73.0-121 5.53 20
Bromodichloromethane 5.00 4.84 4.73 96.8 94.6 75.0-120 2.30 20
Bromoform 5.00 5.19 4.95 104 99.0 68.0-132 4.73 20
Bromomethane 5.00 5.92 5.13 118 103 10.0-160 14.3 25
n-Butylbenzene 5.00 4.99 4.81 99.8 96.2 73.0-125 3.67 20
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
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QUALITY CONTROL SUMMARYWG1753242
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 L1411013-02,04
Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD)
(LCS) R3715171-1 10/08/21 09:03 • (LCSD) R3715171-2 10/08/21 09:25
Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits
Analyte ug/l ug/l ug/l %%%%%
sec-Butylbenzene 5.00 5.22 4.94 104 98.8 75.0-125 5.51 20
tert-Butylbenzene 5.00 4.93 4.52 98.6 90.4 76.0-124 8.68 20
Carbon tetrachloride 5.00 4.97 4.15 99.4 83.0 68.0-126 18.0 20
Chlorobenzene 5.00 4.84 4.64 96.8 92.8 80.0-121 4.22 20
Chlorodibromomethane 5.00 4.82 4.98 96.4 99.6 77.0-125 3.27 20
Chloroethane 5.00 4.31 4.42 86.2 88.4 47.0-150 2.52 20
Chloroform 5.00 4.72 4.60 94.4 92.0 73.0-120 2.58 20
Chloromethane 5.00 4.44 4.64 88.8 92.8 41.0-142 4.41 20
2-Chlorotoluene 5.00 5.02 4.82 100 96.4 76.0-123 4.07 20
4-Chlorotoluene 5.00 5.13 4.91 103 98.2 75.0-122 4.38 20
1,2-Dibromo-3-Chloropropane 5.00 4.85 4.73 97.0 94.6 58.0-134 2.51 20
1,2-Dibromoethane 5.00 4.78 4.92 95.6 98.4 80.0-122 2.89 20
Dibromomethane 5.00 4.83 4.64 96.6 92.8 80.0-120 4.01 20
1,2-Dichlorobenzene 5.00 5.27 5.09 105 102 79.0-121 3.47 20
1,3-Dichlorobenzene 5.00 5.20 4.89 104 97.8 79.0-120 6.14 20
1,4-Dichlorobenzene 5.00 4.84 4.83 96.8 96.6 79.0-120 0.207 20
Dichlorodifluoromethane 5.00 4.70 4.03 94.0 80.6 51.0-149 15.3 20
1,1-Dichloroethane 5.00 4.80 4.63 96.0 92.6 70.0-126 3.61 20
1,2-Dichloroethane 5.00 4.91 4.83 98.2 96.6 70.0-128 1.64 20
1,1-Dichloroethene 5.00 4.87 4.60 97.4 92.0 71.0-124 5.70 20
cis-1,2-Dichloroethene 5.00 4.80 4.92 96.0 98.4 73.0-120 2.47 20
trans-1,2-Dichloroethene 5.00 4.59 4.66 91.8 93.2 73.0-120 1.51 20
1,2-Dichloropropane 5.00 4.70 5.03 94.0 101 77.0-125 6.78 20
1,1-Dichloropropene 5.00 4.85 4.44 97.0 88.8 74.0-126 8.83 20
1,3-Dichloropropane 5.00 4.86 5.01 97.2 100 80.0-120 3.04 20
2,2-Dichloropropane 5.00 6.34 5.84 127 117 58.0-130 8.21 20
Di-isopropyl ether 5.00 5.00 4.89 100 97.8 58.0-138 2.22 20
Ethylbenzene 5.00 4.93 4.81 98.6 96.2 79.0-123 2.46 20
Hexachloro-1,3-butadiene 5.00 5.73 4.79 115 95.8 54.0-138 17.9 20
Isopropylbenzene 5.00 4.86 4.62 97.2 92.4 76.0-127 5.06 20
p-Isopropyltoluene 5.00 5.17 4.68 103 93.6 76.0-125 9.95 20
2-Butanone (MEK)25.0 24.8 25.5 99.2 102 44.0-160 2.78 20
Methylene Chloride 5.00 5.49 5.21 110 104 67.0-120 5.23 20
4-Methyl-2-pentanone (MIBK)25.0 24.8 25.6 99.2 102 68.0-142 3.17 20
Methyl tert-butyl ether 5.00 5.00 5.01 100 100 68.0-125 0.200 20
Naphthalene 5.00 4.70 4.45 94.0 89.0 54.0-135 5.46 20
n-Propylbenzene 5.00 4.94 4.74 98.8 94.8 77.0-124 4.13 20
Styrene 5.00 4.88 4.91 97.6 98.2 73.0-130 0.613 20
1,1,1,2-Tetrachloroethane 5.00 4.74 4.49 94.8 89.8 75.0-125 5.42 20
1,1,2,2-Tetrachloroethane 5.00 5.82 5.80 116 116 65.0-130 0.344 20
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
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QUALITY CONTROL SUMMARYWG1753242
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 L1411013-02,04
Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD)
(LCS) R3715171-1 10/08/21 09:03 • (LCSD) R3715171-2 10/08/21 09:25
Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits
Analyte ug/l ug/l ug/l %%%%%
Tetrachloroethene 5.00 4.89 4.86 97.8 97.2 72.0-132 0.615 20
Toluene 5.00 4.73 4.62 94.6 92.4 79.0-120 2.35 20
1,2,3-Trichlorobenzene 5.00 5.31 4.89 106 97.8 50.0-138 8.24 20
1,2,4-Trichlorobenzene 5.00 5.09 4.98 102 99.6 57.0-137 2.18 20
1,1,1-Trichloroethane 5.00 4.99 4.49 99.8 89.8 73.0-124 10.5 20
1,1,2-Trichloroethane 5.00 5.16 5.09 103 102 80.0-120 1.37 20
Trichloroethene 5.00 4.49 4.32 89.8 86.4 78.0-124 3.86 20
Trichlorofluoromethane 5.00 4.74 4.36 94.8 87.2 59.0-147 8.35 20
1,2,3-Trichloropropane 5.00 4.85 4.62 97.0 92.4 73.0-130 4.86 20
1,2,4-Trimethylbenzene 5.00 5.06 4.83 101 96.6 76.0-121 4.65 20
1,3,5-Trimethylbenzene 5.00 4.97 4.76 99.4 95.2 76.0-122 4.32 20
Vinyl chloride 5.00 4.12 4.06 82.4 81.2 67.0-131 1.47 20
o-Xylene 5.00 4.59 4.61 91.8 92.2 80.0-122 0.435 20
m&p-Xylenes 10.0 9.70 9.37 97.0 93.7 80.0-122 3.46 20
(S) Toluene-d8 101 102 80.0-120
(S) 4-Bromofluorobenzene 98.7 98.4 77.0-126
(S) 1,2-Dichloroethane-d4 104 105 70.0-130
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
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QUALITY CONTROL SUMMARYWG1754214
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 L1411013-06,07
Method Blank (MB)
(MB) R3716780-2 10/09/21 09:29
MB Result MB Qualifier MB MDL MB RDL
Analyte ug/l ug/l ug/l
Acetone U 11.3 50.0
Acrolein U 2.54 50.0
Acrylonitrile U 0.671 10.0
Benzene 0.123 J 0.0941 1.00
Bromobenzene U 0.118 1.00
Bromodichloromethane U 0.136 1.00
Bromoform U 0.129 1.00
Bromomethane U 0.605 5.00
n-Butylbenzene U 0.157 1.00
sec-Butylbenzene U 0.125 1.00
tert-Butylbenzene U 0.127 1.00
Carbon tetrachloride U 0.128 1.00
Chlorobenzene U 0.116 1.00
Chlorodibromomethane U 0.140 1.00
Chloroethane U 0.192 5.00
Chloroform U 0.111 5.00
Chloromethane U 0.960 2.50
2-Chlorotoluene U 0.106 1.00
4-Chlorotoluene U 0.114 1.00
1,2-Dibromo-3-Chloropropane U 0.276 5.00
1,2-Dibromoethane U 0.126 1.00
Dibromomethane U 0.122 1.00
1,2-Dichlorobenzene U 0.107 1.00
1,3-Dichlorobenzene U 0.110 1.00
1,4-Dichlorobenzene U 0.120 1.00
Dichlorodifluoromethane U 0.374 5.00
1,1-Dichloroethane U 0.100 1.00
1,2-Dichloroethane U 0.0819 1.00
1,1-Dichloroethene U 0.188 1.00
cis-1,2-Dichloroethene U 0.126 1.00
trans-1,2-Dichloroethene U 0.149 1.00
1,2-Dichloropropane U 0.149 1.00
1,1-Dichloropropene U 0.142 1.00
1,3-Dichloropropane U 0.110 1.00
2,2-Dichloropropane U 0.161 1.00
Di-isopropyl ether U 0.105 1.00
Ethylbenzene U 0.137 1.00
Hexachloro-1,3-butadiene U 0.337 1.00
Isopropylbenzene U 0.105 1.00
p-Isopropyltoluene U 0.120 1.00
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
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QUALITY CONTROL SUMMARYWG1754214
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 L1411013-06,07
Method Blank (MB)
(MB) R3716780-2 10/09/21 09:29
MB Result MB Qualifier MB MDL MB RDL
Analyte ug/l ug/l ug/l
2-Butanone (MEK)U 1.19 10.0
Methylene Chloride U 0.430 5.00
4-Methyl-2-pentanone (MIBK)U 0.478 10.0
Methyl tert-butyl ether U 0.101 1.00
Naphthalene U 1.00 5.00
n-Propylbenzene U 0.0993 1.00
Styrene U 0.118 1.00
1,1,1,2-Tetrachloroethane U 0.147 1.00
1,1,2,2-Tetrachloroethane U 0.133 1.00
Tetrachloroethene U 0.300 1.00
Toluene 0.443 J 0.278 1.00
1,2,3-Trichlorobenzene U 0.230 1.00
1,2,4-Trichlorobenzene U 0.481 1.00
1,1,1-Trichloroethane U 0.149 1.00
1,1,2-Trichloroethane U 0.158 1.00
Trichloroethene U 0.190 1.00
Trichlorofluoromethane U 0.160 5.00
1,2,3-Trichloropropane U 0.237 2.50
1,2,4-Trimethylbenzene U 0.322 1.00
1,3,5-Trimethylbenzene U 0.104 1.00
Vinyl chloride U 0.234 1.00
o-Xylene U 0.174 1.00
m&p-Xylenes U 0.430 2.00
(S) Toluene-d8 103 80.0-120
(S) 4-Bromofluorobenzene 99.9 77.0-126
(S) 1,2-Dichloroethane-d4 107 70.0-130
Laboratory Control Sample (LCS)
(LCS) R3716780-1 10/09/21 08:46
Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier
Analyte ug/l ug/l %%
Acetone 25.0 23.9 95.6 19.0-160
Acrolein 25.0 33.0 132 10.0-160
Acrylonitrile 25.0 25.9 104 55.0-149
Benzene 5.00 4.78 95.6 70.0-123
Bromobenzene 5.00 4.74 94.8 73.0-121
Bromodichloromethane 5.00 4.77 95.4 75.0-120
Bromoform 5.00 4.73 94.6 68.0-132
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
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QUALITY CONTROL SUMMARYWG1754214
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 L1411013-06,07
Laboratory Control Sample (LCS)
(LCS) R3716780-1 10/09/21 08:46
Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier
Analyte ug/l ug/l %%
Bromomethane 5.00 3.20 64.0 10.0-160
n-Butylbenzene 5.00 4.56 91.2 73.0-125
sec-Butylbenzene 5.00 4.63 92.6 75.0-125
tert-Butylbenzene 5.00 4.57 91.4 76.0-124
Carbon tetrachloride 5.00 4.64 92.8 68.0-126
Chlorobenzene 5.00 4.54 90.8 80.0-121
Chlorodibromomethane 5.00 4.85 97.0 77.0-125
Chloroethane 5.00 4.75 95.0 47.0-150
Chloroform 5.00 4.68 93.6 73.0-120
Chloromethane 5.00 3.87 77.4 41.0-142
2-Chlorotoluene 5.00 4.69 93.8 76.0-123
4-Chlorotoluene 5.00 4.82 96.4 75.0-122
1,2-Dibromo-3-Chloropropane 5.00 5.17 103 58.0-134
1,2-Dibromoethane 5.00 4.92 98.4 80.0-122
Dibromomethane 5.00 4.58 91.6 80.0-120
1,2-Dichlorobenzene 5.00 4.93 98.6 79.0-121
1,3-Dichlorobenzene 5.00 4.71 94.2 79.0-120
1,4-Dichlorobenzene 5.00 4.92 98.4 79.0-120
Dichlorodifluoromethane 5.00 4.16 83.2 51.0-149
1,1-Dichloroethane 5.00 4.67 93.4 70.0-126
1,2-Dichloroethane 5.00 4.96 99.2 70.0-128
1,1-Dichloroethene 5.00 4.72 94.4 71.0-124
cis-1,2-Dichloroethene 5.00 4.70 94.0 73.0-120
trans-1,2-Dichloroethene 5.00 4.78 95.6 73.0-120
1,2-Dichloropropane 5.00 4.60 92.0 77.0-125
1,1-Dichloropropene 5.00 4.46 89.2 74.0-126
1,3-Dichloropropane 5.00 4.91 98.2 80.0-120
2,2-Dichloropropane 5.00 5.49 110 58.0-130
Di-isopropyl ether 5.00 4.83 96.6 58.0-138
Ethylbenzene 5.00 4.83 96.6 79.0-123
Hexachloro-1,3-butadiene 5.00 4.61 92.2 54.0-138
Isopropylbenzene 5.00 4.67 93.4 76.0-127
p-Isopropyltoluene 5.00 4.55 91.0 76.0-125
2-Butanone (MEK)25.0 23.7 94.8 44.0-160
Methylene Chloride 5.00 5.08 102 67.0-120
4-Methyl-2-pentanone (MIBK)25.0 24.5 98.0 68.0-142
Methyl tert-butyl ether 5.00 4.97 99.4 68.0-125
Naphthalene 5.00 5.06 101 54.0-135
n-Propylbenzene 5.00 4.72 94.4 77.0-124
Styrene 5.00 4.65 93.0 73.0-130
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
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QUALITY CONTROL SUMMARYWG1754214
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 L1411013-06,07
Laboratory Control Sample (LCS)
(LCS) R3716780-1 10/09/21 08:46
Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier
Analyte ug/l ug/l %%
1,1,1,2-Tetrachloroethane 5.00 4.64 92.8 75.0-125
1,1,2,2-Tetrachloroethane 5.00 5.34 107 65.0-130
Tetrachloroethene 5.00 4.44 88.8 72.0-132
Toluene 5.00 5.04 101 79.0-120
1,2,3-Trichlorobenzene 5.00 5.13 103 50.0-138
1,2,4-Trichlorobenzene 5.00 4.61 92.2 57.0-137
1,1,1-Trichloroethane 5.00 4.84 96.8 73.0-124
1,1,2-Trichloroethane 5.00 4.80 96.0 80.0-120
Trichloroethene 5.00 4.69 93.8 78.0-124
Trichlorofluoromethane 5.00 4.31 86.2 59.0-147
1,2,3-Trichloropropane 5.00 4.78 95.6 73.0-130
1,2,4-Trimethylbenzene 5.00 4.73 94.6 76.0-121
1,3,5-Trimethylbenzene 5.00 4.81 96.2 76.0-122
Vinyl chloride 5.00 4.26 85.2 67.0-131
o-Xylene 5.00 4.68 93.6 80.0-122
m&p-Xylenes 10.0 9.49 94.9 80.0-122
(S) Toluene-d8 102 80.0-120
(S) 4-Bromofluorobenzene 101 77.0-126
(S) 1,2-Dichloroethane-d4 106 70.0-130
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
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QUALITY CONTROL SUMMARYWG1755424
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 L1411013-02,04
Method Blank (MB)
(MB) R3715450-4 10/12/21 12:15
MB Result MB Qualifier MB MDL MB RDL
Analyte ug/l ug/l ug/l
Acrolein U 2.54 50.0
(S) Toluene-d8 95.9 80.0-120
(S) 4-Bromofluorobenzene 92.8 77.0-126
(S) 1,2-Dichloroethane-d4 127 70.0-130
Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD)
(LCS) R3715450-1 10/12/21 10:10 • (LCSD) R3715450-2 10/12/21 10:30
Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits
Analyte ug/l ug/l ug/l %%%%%
Acrolein 25.0 35.9 36.9 144 148 10.0-160 2.75 26
(S) Toluene-d8 94.9 93.9 80.0-120
(S) 4-Bromofluorobenzene 94.6 90.3 77.0-126
(S) 1,2-Dichloroethane-d4 125 124 70.0-130
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
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ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Terracon - Greensboro, NC 75207132 L1411013 10/19/21 11:58 27 of 39
QUALITY CONTROL SUMMARYWG1755427
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 L1411013-01,03
Method Blank (MB)
(MB) R3715391-3 10/12/21 12:55
MB Result MB Qualifier MB MDL MB RDL
Analyte ug/l ug/l ug/l
Acetone U 11.3 50.0
Acrylonitrile U 0.671 10.0
Benzene U 0.0941 1.00
Bromobenzene U 0.118 1.00
Bromodichloromethane U 0.136 1.00
Bromoform U 0.129 1.00
Bromomethane U 0.605 5.00
n-Butylbenzene U 0.157 1.00
sec-Butylbenzene U 0.125 1.00
tert-Butylbenzene U 0.127 1.00
Carbon tetrachloride U 0.128 1.00
Chlorobenzene U 0.116 1.00
Chlorodibromomethane U 0.140 1.00
Chloroethane U 0.192 5.00
Chloroform U 0.111 5.00
Chloromethane U 0.960 2.50
2-Chlorotoluene U 0.106 1.00
4-Chlorotoluene U 0.114 1.00
1,2-Dibromo-3-Chloropropane U 0.276 5.00
1,2-Dibromoethane U 0.126 1.00
Dibromomethane U 0.122 1.00
1,2-Dichlorobenzene U 0.107 1.00
1,3-Dichlorobenzene U 0.110 1.00
1,4-Dichlorobenzene U 0.120 1.00
Dichlorodifluoromethane U 0.374 5.00
1,1-Dichloroethane U 0.100 1.00
1,2-Dichloroethane U 0.0819 1.00
1,1-Dichloroethene U 0.188 1.00
cis-1,2-Dichloroethene U 0.126 1.00
trans-1,2-Dichloroethene U 0.149 1.00
1,2-Dichloropropane U 0.149 1.00
1,1-Dichloropropene U 0.142 1.00
1,3-Dichloropropane U 0.110 1.00
2,2-Dichloropropane U 0.161 1.00
Di-isopropyl ether U 0.105 1.00
Ethylbenzene U 0.137 1.00
Hexachloro-1,3-butadiene U 0.337 1.00
Isopropylbenzene U 0.105 1.00
p-Isopropyltoluene U 0.120 1.00
2-Butanone (MEK)U 1.19 10.0
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
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QUALITY CONTROL SUMMARYWG1755427
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 L1411013-01,03
Method Blank (MB)
(MB) R3715391-3 10/12/21 12:55
MB Result MB Qualifier MB MDL MB RDL
Analyte ug/l ug/l ug/l
Methylene Chloride U 0.430 5.00
4-Methyl-2-pentanone (MIBK)U 0.478 10.0
Methyl tert-butyl ether U 0.101 1.00
n-Propylbenzene U 0.0993 1.00
Styrene U 0.118 1.00
1,1,1,2-Tetrachloroethane U 0.147 1.00
1,1,2,2-Tetrachloroethane U 0.133 1.00
Tetrachloroethene U 0.300 1.00
Toluene U 0.278 1.00
1,2,3-Trichlorobenzene U 0.230 1.00
1,2,4-Trichlorobenzene U 0.481 1.00
1,1,1-Trichloroethane U 0.149 1.00
1,1,2-Trichloroethane U 0.158 1.00
Trichloroethene U 0.190 1.00
Trichlorofluoromethane U 0.160 5.00
1,2,3-Trichloropropane U 0.237 2.50
1,2,4-Trimethylbenzene U 0.322 1.00
1,3,5-Trimethylbenzene U 0.104 1.00
Vinyl chloride U 0.234 1.00
o-Xylene U 0.174 1.00
m&p-Xylenes U 0.430 2.00
(S) Toluene-d8 106 80.0-120
(S) 4-Bromofluorobenzene 98.9 77.0-126
(S) 1,2-Dichloroethane-d4 108 70.0-130
Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD)
(LCS) R3715391-1 10/12/21 11:52 • (LCSD) R3715391-2 10/12/21 12:13
Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits
Analyte ug/l ug/l ug/l %%%%%
Acetone 25.0 25.8 27.1 103 108 19.0-160 4.91 27
Acrylonitrile 25.0 25.3 23.5 101 94.0 55.0-149 7.38 20
Benzene 5.00 4.60 4.63 92.0 92.6 70.0-123 0.650 20
Bromobenzene 5.00 4.89 5.01 97.8 100 73.0-121 2.42 20
Bromodichloromethane 5.00 4.89 5.22 97.8 104 75.0-120 6.53 20
Bromoform 5.00 4.81 4.70 96.2 94.0 68.0-132 2.31 20
Bromomethane 5.00 3.78 3.52 75.6 70.4 10.0-160 7.12 25
n-Butylbenzene 5.00 4.58 4.78 91.6 95.6 73.0-125 4.27 20
sec-Butylbenzene 5.00 4.90 5.05 98.0 101 75.0-125 3.02 20
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
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QUALITY CONTROL SUMMARYWG1755427
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 L1411013-01,03
Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD)
(LCS) R3715391-1 10/12/21 11:52 • (LCSD) R3715391-2 10/12/21 12:13
Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits
Analyte ug/l ug/l ug/l %%%%%
tert-Butylbenzene 5.00 4.64 4.92 92.8 98.4 76.0-124 5.86 20
Carbon tetrachloride 5.00 5.07 5.26 101 105 68.0-126 3.68 20
Chlorobenzene 5.00 4.71 4.50 94.2 90.0 80.0-121 4.56 20
Chlorodibromomethane 5.00 4.71 4.83 94.2 96.6 77.0-125 2.52 20
Chloroethane 5.00 5.12 5.05 102 101 47.0-150 1.38 20
Chloroform 5.00 5.05 4.94 101 98.8 73.0-120 2.20 20
Chloromethane 5.00 3.29 3.41 65.8 68.2 41.0-142 3.58 20
2-Chlorotoluene 5.00 4.91 5.19 98.2 104 76.0-123 5.54 20
4-Chlorotoluene 5.00 4.88 5.00 97.6 100 75.0-122 2.43 20
1,2-Dibromo-3-Chloropropane 5.00 3.99 4.47 79.8 89.4 58.0-134 11.3 20
1,2-Dibromoethane 5.00 4.63 4.58 92.6 91.6 80.0-122 1.09 20
Dibromomethane 5.00 4.88 4.99 97.6 99.8 80.0-120 2.23 20
1,2-Dichlorobenzene 5.00 4.80 4.89 96.0 97.8 79.0-121 1.86 20
1,3-Dichlorobenzene 5.00 4.78 4.91 95.6 98.2 79.0-120 2.68 20
1,4-Dichlorobenzene 5.00 4.52 4.55 90.4 91.0 79.0-120 0.662 20
Dichlorodifluoromethane 5.00 4.79 5.21 95.8 104 51.0-149 8.40 20
1,1-Dichloroethane 5.00 4.80 4.58 96.0 91.6 70.0-126 4.69 20
1,2-Dichloroethane 5.00 5.13 5.22 103 104 70.0-128 1.74 20
1,1-Dichloroethene 5.00 4.74 4.95 94.8 99.0 71.0-124 4.33 20
cis-1,2-Dichloroethene 5.00 4.75 4.66 95.0 93.2 73.0-120 1.91 20
trans-1,2-Dichloroethene 5.00 4.58 4.86 91.6 97.2 73.0-120 5.93 20
1,2-Dichloropropane 5.00 4.52 4.85 90.4 97.0 77.0-125 7.04 20
1,1-Dichloropropene 5.00 4.70 5.06 94.0 101 74.0-126 7.38 20
1,3-Dichloropropane 5.00 4.77 4.70 95.4 94.0 80.0-120 1.48 20
2,2-Dichloropropane 5.00 6.03 6.58 121 132 58.0-130 J4 8.72 20
Di-isopropyl ether 5.00 4.85 4.79 97.0 95.8 58.0-138 1.24 20
Ethylbenzene 5.00 4.66 4.70 93.2 94.0 79.0-123 0.855 20
Hexachloro-1,3-butadiene 5.00 4.74 4.67 94.8 93.4 54.0-138 1.49 20
Isopropylbenzene 5.00 4.51 4.61 90.2 92.2 76.0-127 2.19 20
p-Isopropyltoluene 5.00 4.80 4.95 96.0 99.0 76.0-125 3.08 20
2-Butanone (MEK)25.0 25.0 24.6 100 98.4 44.0-160 1.61 20
Methylene Chloride 5.00 5.02 5.10 100 102 67.0-120 1.58 20
4-Methyl-2-pentanone (MIBK)25.0 24.9 23.8 99.6 95.2 68.0-142 4.52 20
Methyl tert-butyl ether 5.00 5.07 5.13 101 103 68.0-125 1.18 20
n-Propylbenzene 5.00 4.77 5.04 95.4 101 77.0-124 5.50 20
Styrene 5.00 4.18 4.25 83.6 85.0 73.0-130 1.66 20
1,1,1,2-Tetrachloroethane 5.00 4.38 4.33 87.6 86.6 75.0-125 1.15 20
1,1,2,2-Tetrachloroethane 5.00 5.74 5.82 115 116 65.0-130 1.38 20
Tetrachloroethene 5.00 4.63 4.71 92.6 94.2 72.0-132 1.71 20
Toluene 5.00 4.52 4.63 90.4 92.6 79.0-120 2.40 20
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
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QUALITY CONTROL SUMMARYWG1755427
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 L1411013-01,03
Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD)
(LCS) R3715391-1 10/12/21 11:52 • (LCSD) R3715391-2 10/12/21 12:13
Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits
Analyte ug/l ug/l ug/l %%%%%
1,2,3-Trichlorobenzene 5.00 3.54 3.99 70.8 79.8 50.0-138 12.0 20
1,2,4-Trichlorobenzene 5.00 3.91 4.08 78.2 81.6 57.0-137 4.26 20
1,1,1-Trichloroethane 5.00 5.02 5.28 100 106 73.0-124 5.05 20
1,1,2-Trichloroethane 5.00 4.63 4.69 92.6 93.8 80.0-120 1.29 20
Trichloroethene 5.00 4.53 4.69 90.6 93.8 78.0-124 3.47 20
Trichlorofluoromethane 5.00 5.55 5.63 111 113 59.0-147 1.43 20
1,2,3-Trichloropropane 5.00 4.78 5.49 95.6 110 73.0-130 13.8 20
1,2,4-Trimethylbenzene 5.00 4.75 4.93 95.0 98.6 76.0-121 3.72 20
1,3,5-Trimethylbenzene 5.00 4.93 5.13 98.6 103 76.0-122 3.98 20
Vinyl chloride 5.00 4.33 4.58 86.6 91.6 67.0-131 5.61 20
o-Xylene 5.00 4.24 4.15 84.8 83.0 80.0-122 2.15 20
m&p-Xylenes 10.0 9.18 8.91 91.8 89.1 80.0-122 2.99 20
(S) Toluene-d8 101 99.9 80.0-120
(S) 4-Bromofluorobenzene 97.0 95.7 77.0-126
(S) 1,2-Dichloroethane-d4 113 111 70.0-130
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
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QUALITY CONTROL SUMMARYWG1755751
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 L1411013-01,03
Method Blank (MB)
(MB) R3716912-3 10/13/21 23:53
MB Result MB Qualifier MB MDL MB RDL
Analyte ug/l ug/l ug/l
Acrolein U 2.54 50.0
Ethylbenzene U 0.137 1.00
Naphthalene U 1.00 5.00
1,2,4-Trimethylbenzene U 0.322 1.00
m&p-Xylenes U 0.430 2.00
(S) Toluene-d8 99.2 80.0-120
(S) 4-Bromofluorobenzene 90.7 77.0-126
(S) 1,2-Dichloroethane-d4 109 70.0-130
Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD)
(LCS) R3716912-1 10/13/21 22:48 • (LCSD) R3716912-2 10/13/21 23:09
Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits
Analyte ug/l ug/l ug/l %%%%%
Acrolein 25.0 47.3 48.3 189 193 10.0-160 J4 J4 2.09 26
Ethylbenzene 5.00 4.93 4.95 98.6 99.0 79.0-123 0.405 20
Naphthalene 5.00 4.36 4.78 87.2 95.6 54.0-135 9.19 20
1,2,4-Trimethylbenzene 5.00 4.46 4.58 89.2 91.6 76.0-121 2.65 20
m&p-Xylenes 10.0 9.90 9.31 99.0 93.1 80.0-122 6.14 20
(S) Toluene-d8 101 98.5 80.0-120
(S) 4-Bromofluorobenzene 90.8 90.9 77.0-126
(S) 1,2-Dichloroethane-d4 112 112 70.0-130
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
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QUALITY CONTROL SUMMARYWG1757674
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 L1411013-05
Method Blank (MB)
(MB) R3717132-4 10/15/21 10:11
MB Result MB Qualifier MB MDL MB RDL
Analyte ug/l ug/l ug/l
Acetone U 11.3 50.0
Acrolein U 2.54 50.0
Acrylonitrile U 0.671 10.0
Benzene U 0.0941 1.00
Bromobenzene U 0.118 1.00
Bromodichloromethane U 0.136 1.00
Bromoform U 0.129 1.00
Bromomethane U 0.605 5.00
n-Butylbenzene U 0.157 1.00
sec-Butylbenzene U 0.125 1.00
tert-Butylbenzene U 0.127 1.00
Carbon tetrachloride U 0.128 1.00
Chlorobenzene U 0.116 1.00
Chlorodibromomethane U 0.140 1.00
Chloroethane U 0.192 5.00
Chloroform U 0.111 5.00
Chloromethane U 0.960 2.50
2-Chlorotoluene U 0.106 1.00
4-Chlorotoluene U 0.114 1.00
1,2-Dibromo-3-Chloropropane U 0.276 5.00
1,2-Dibromoethane U 0.126 1.00
Dibromomethane U 0.122 1.00
1,2-Dichlorobenzene U 0.107 1.00
1,3-Dichlorobenzene U 0.110 1.00
1,4-Dichlorobenzene U 0.120 1.00
Dichlorodifluoromethane U 0.374 5.00
1,1-Dichloroethane U 0.100 1.00
1,2-Dichloroethane U 0.0819 1.00
1,1-Dichloroethene U 0.188 1.00
cis-1,2-Dichloroethene U 0.126 1.00
trans-1,2-Dichloroethene U 0.149 1.00
1,2-Dichloropropane U 0.149 1.00
1,1-Dichloropropene U 0.142 1.00
1,3-Dichloropropane U 0.110 1.00
2,2-Dichloropropane U 0.161 1.00
Di-isopropyl ether U 0.105 1.00
Ethylbenzene U 0.137 1.00
Hexachloro-1,3-butadiene U 0.337 1.00
Isopropylbenzene U 0.105 1.00
p-Isopropyltoluene U 0.120 1.00
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
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ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
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QUALITY CONTROL SUMMARYWG1757674
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 L1411013-05
Method Blank (MB)
(MB) R3717132-4 10/15/21 10:11
MB Result MB Qualifier MB MDL MB RDL
Analyte ug/l ug/l ug/l
2-Butanone (MEK)U 1.19 10.0
Methylene Chloride U 0.430 5.00
4-Methyl-2-pentanone (MIBK)U 0.478 10.0
Methyl tert-butyl ether U 0.101 1.00
Naphthalene U 1.00 5.00
n-Propylbenzene U 0.0993 1.00
Styrene U 0.118 1.00
1,1,1,2-Tetrachloroethane U 0.147 1.00
1,1,2,2-Tetrachloroethane U 0.133 1.00
Tetrachloroethene U 0.300 1.00
Toluene U 0.278 1.00
1,2,3-Trichlorobenzene U 0.230 1.00
1,2,4-Trichlorobenzene U 0.481 1.00
1,1,1-Trichloroethane U 0.149 1.00
1,1,2-Trichloroethane U 0.158 1.00
Trichloroethene U 0.190 1.00
Trichlorofluoromethane U 0.160 5.00
1,2,3-Trichloropropane U 0.237 2.50
1,2,4-Trimethylbenzene U 0.322 1.00
1,3,5-Trimethylbenzene U 0.104 1.00
Vinyl chloride U 0.234 1.00
o-Xylene U 0.174 1.00
m&p-Xylenes U 0.430 2.00
(S) Toluene-d8 104 80.0-120
(S) 4-Bromofluorobenzene 104 77.0-126
(S) 1,2-Dichloroethane-d4 106 70.0-130
Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD)
(LCS) R3717132-1 10/15/21 08:49 • (LCSD) R3717132-2 10/15/21 09:09
Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits
Analyte ug/l ug/l ug/l %%%%%
Acetone 25.0 31.1 30.1 124 120 19.0-160 3.27 27
Acrolein 25.0 16.7 16.6 66.8 66.4 10.0-160 0.601 26
Acrylonitrile 25.0 26.6 26.5 106 106 55.0-149 0.377 20
Benzene 5.00 5.25 4.82 105 96.4 70.0-123 8.54 20
Bromobenzene 5.00 5.61 5.20 112 104 73.0-121 7.59 20
Bromodichloromethane 5.00 5.28 5.18 106 104 75.0-120 1.91 20
Bromoform 5.00 4.61 4.44 92.2 88.8 68.0-132 3.76 20
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
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ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Terracon - Greensboro, NC 75207132 L1411013 10/19/21 11:58 34 of 39
QUALITY CONTROL SUMMARYWG1757674
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 L1411013-05
Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD)
(LCS) R3717132-1 10/15/21 08:49 • (LCSD) R3717132-2 10/15/21 09:09
Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits
Analyte ug/l ug/l ug/l %%%%%
Bromomethane 5.00 4.92 4.76 98.4 95.2 10.0-160 3.31 25
n-Butylbenzene 5.00 5.64 5.39 113 108 73.0-125 4.53 20
sec-Butylbenzene 5.00 6.04 5.30 121 106 75.0-125 13.1 20
tert-Butylbenzene 5.00 5.56 5.16 111 103 76.0-124 7.46 20
Carbon tetrachloride 5.00 5.37 4.95 107 99.0 68.0-126 8.14 20
Chlorobenzene 5.00 5.05 5.00 101 100 80.0-121 0.995 20
Chlorodibromomethane 5.00 5.16 4.70 103 94.0 77.0-125 9.33 20
Chloroethane 5.00 5.79 5.27 116 105 47.0-150 9.40 20
Chloroform 5.00 5.23 5.05 105 101 73.0-120 3.50 20
Chloromethane 5.00 5.57 4.98 111 99.6 41.0-142 11.2 20
2-Chlorotoluene 5.00 5.49 5.06 110 101 76.0-123 8.15 20
4-Chlorotoluene 5.00 5.17 4.83 103 96.6 75.0-122 6.80 20
1,2-Dibromo-3-Chloropropane 5.00 4.88 5.20 97.6 104 58.0-134 6.35 20
1,2-Dibromoethane 5.00 5.08 4.77 102 95.4 80.0-122 6.29 20
Dibromomethane 5.00 5.00 4.67 100 93.4 80.0-120 6.83 20
1,2-Dichlorobenzene 5.00 5.43 5.17 109 103 79.0-121 4.91 20
1,3-Dichlorobenzene 5.00 5.63 5.35 113 107 79.0-120 5.10 20
1,4-Dichlorobenzene 5.00 5.25 4.81 105 96.2 79.0-120 8.75 20
Dichlorodifluoromethane 5.00 5.73 5.21 115 104 51.0-149 9.51 20
1,1-Dichloroethane 5.00 5.46 5.17 109 103 70.0-126 5.46 20
1,2-Dichloroethane 5.00 5.48 5.37 110 107 70.0-128 2.03 20
1,1-Dichloroethene 5.00 5.29 4.98 106 99.6 71.0-124 6.04 20
cis-1,2-Dichloroethene 5.00 5.17 5.03 103 101 73.0-120 2.75 20
trans-1,2-Dichloroethene 5.00 5.29 4.48 106 89.6 73.0-120 16.6 20
1,2-Dichloropropane 5.00 5.15 5.05 103 101 77.0-125 1.96 20
1,1-Dichloropropene 5.00 5.43 5.15 109 103 74.0-126 5.29 20
1,3-Dichloropropane 5.00 5.26 5.23 105 105 80.0-120 0.572 20
2,2-Dichloropropane 5.00 5.41 5.09 108 102 58.0-130 6.10 20
Di-isopropyl ether 5.00 4.92 4.98 98.4 99.6 58.0-138 1.21 20
Ethylbenzene 5.00 5.33 5.00 107 100 79.0-123 6.39 20
Hexachloro-1,3-butadiene 5.00 5.72 5.65 114 113 54.0-138 1.23 20
Isopropylbenzene 5.00 5.52 5.20 110 104 76.0-127 5.97 20
p-Isopropyltoluene 5.00 5.79 5.41 116 108 76.0-125 6.79 20
2-Butanone (MEK)25.0 28.2 27.3 113 109 44.0-160 3.24 20
Methylene Chloride 5.00 5.28 5.13 106 103 67.0-120 2.88 20
4-Methyl-2-pentanone (MIBK)25.0 26.8 26.7 107 107 68.0-142 0.374 20
Methyl tert-butyl ether 5.00 5.31 5.19 106 104 68.0-125 2.29 20
Naphthalene 5.00 4.95 4.92 99.0 98.4 54.0-135 0.608 20
n-Propylbenzene 5.00 5.67 5.40 113 108 77.0-124 4.88 20
Styrene 5.00 5.28 5.28 106 106 73.0-130 0.000 20
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Terracon - Greensboro, NC 75207132 L1411013 10/19/21 11:53 35 of 39
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
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QUALITY CONTROL SUMMARYWG1757674
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 L1411013-05
Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD)
(LCS) R3717132-1 10/15/21 08:49 • (LCSD) R3717132-2 10/15/21 09:09
Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits
Analyte ug/l ug/l ug/l %%%%%
1,1,1,2-Tetrachloroethane 5.00 5.00 5.07 100 101 75.0-125 1.39 20
1,1,2,2-Tetrachloroethane 5.00 5.36 4.99 107 99.8 65.0-130 7.15 20
Tetrachloroethene 5.00 5.26 4.98 105 99.6 72.0-132 5.47 20
Toluene 5.00 5.14 4.75 103 95.0 79.0-120 7.89 20
1,2,3-Trichlorobenzene 5.00 5.02 4.77 100 95.4 50.0-138 5.11 20
1,2,4-Trichlorobenzene 5.00 5.57 5.16 111 103 57.0-137 7.64 20
1,1,1-Trichloroethane 5.00 5.49 5.23 110 105 73.0-124 4.85 20
1,1,2-Trichloroethane 5.00 5.06 4.95 101 99.0 80.0-120 2.20 20
Trichloroethene 5.00 5.34 5.10 107 102 78.0-124 4.60 20
Trichlorofluoromethane 5.00 6.04 5.53 121 111 59.0-147 8.82 20
1,2,3-Trichloropropane 5.00 5.25 5.51 105 110 73.0-130 4.83 20
1,2,4-Trimethylbenzene 5.00 5.63 5.37 113 107 76.0-121 4.73 20
1,3,5-Trimethylbenzene 5.00 5.37 5.62 107 112 76.0-122 4.55 20
Vinyl chloride 5.00 5.69 4.87 114 97.4 67.0-131 15.5 20
o-Xylene 5.00 5.38 5.45 108 109 80.0-122 1.29 20
m&p-Xylenes 10.0 11.1 10.2 111 102 80.0-122 8.45 20
(S) Toluene-d8 106 102 80.0-120
(S) 4-Bromofluorobenzene 104 102 77.0-126
(S) 1,2-Dichloroethane-d4 106 103 70.0-130
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
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GLOSSARY OF TERMS
Guide to Reading and Understanding Your Laboratory Report
The information below is designed to better explain the various terms used in your report of analytical results from the Laboratory. This is not
intended as a comprehensive explanation, and if you have additional questions please contact your project representative.
Results Disclaimer - Information that may be provided by the customer, and contained within this report, include Permit Limits, Project Name,
Sample ID, Sample Matrix, Sample Preservation, Field Blanks, Field Spikes, Field Duplicates, On-Site Data, Sampling Collection Dates/Times, and
Sampling Location. Results relate to the accuracy of this information provided, and as the samples are received.
Abbreviations and Definitions
MDL Method Detection Limit.
ND Not detected at the Reporting Limit (or MDL where applicable).
RDL Reported Detection Limit.
Rec.Recovery.
RPD Relative Percent Difference.
SDG Sample Delivery Group.
(S)
Surrogate (Surrogate Standard) - Analytes added to every blank, sample, Laboratory Control Sample/Duplicate and
Matrix Spike/Duplicate; used to evaluate analytical efficiency by measuring recovery. Surrogates are not expected to be
detected in all environmental media.
U Not detected at the Reporting Limit (or MDL where applicable).
Analyte The name of the particular compound or analysis performed. Some Analyses and Methods will have multiple analytes
reported.
Dilution
If the sample matrix contains an interfering material, the sample preparation volume or weight values differ from the
standard, or if concentrations of analytes in the sample are higher than the highest limit of concentration that the
laboratory can accurately report, the sample may be diluted for analysis. If a value different than 1 is used in this field, the
result reported has already been corrected for this factor.
Limits
These are the target % recovery ranges or % difference value that the laboratory has historically determined as normal
for the method and analyte being reported. Successful QC Sample analysis will target all analytes recovered or
duplicated within these ranges.
Qualifier
This column provides a letter and/or number designation that corresponds to additional information concerning the result
reported. If a Qualifier is present, a definition per Qualifier is provided within the Glossary and Definitions page and
potentially a discussion of possible implications of the Qualifier in the Case Narrative if applicable.
Result
The actual analytical final result (corrected for any sample specific characteristics) reported for your sample. If there was
no measurable result returned for a specific analyte, the result in this column may state “ND” (Not Detected) or “BDL”
(Below Detectable Levels). The information in the results column should always be accompanied by either an MDL
(Method Detection Limit) or RDL (Reporting Detection Limit) that defines the lowest value that the laboratory could detect
or report for this analyte.
Uncertainty
(Radiochemistry)Confidence level of 2 sigma.
Case Narrative (Cn)
A brief discussion about the included sample results, including a discussion of any non-conformances to protocol
observed either at sample receipt by the laboratory from the field or during the analytical process. If present, there will
be a section in the Case Narrative to discuss the meaning of any data qualifiers used in the report.
Quality Control
Summary (Qc)
This section of the report includes the results of the laboratory quality control analyses required by procedure or
analytical methods to assist in evaluating the validity of the results reported for your samples. These analyses are not
being performed on your samples typically, but on laboratory generated material.
Sample Chain of
Custody (Sc)
This is the document created in the field when your samples were initially collected. This is used to verify the time and
date of collection, the person collecting the samples, and the analyses that the laboratory is requested to perform. This
chain of custody also documents all persons (excluding commercial shippers) that have had control or possession of the
samples from the time of collection until delivery to the laboratory for analysis.
Sample Results (Sr)
This section of your report will provide the results of all testing performed on your samples. These results are provided
by sample ID and are separated by the analyses performed on each sample. The header line of each analysis section for
each sample will provide the name and method number for the analysis reported.
Sample Summary (Ss)This section of the Analytical Report defines the specific analyses performed for each sample ID, including the dates and
times of preparation and/or analysis.
Qualifier Description
B The same analyte is found in the associated blank.
J The identification of the analyte is acceptable; the reported value is an estimate.
J4 The associated batch QC was outside the established quality control range for accuracy.
Q Sample was prepared and/or analyzed past holding time as defined in the method. Concentrations should be
considered minimum values.
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
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ACCREDITATIONS & LOCATIONS

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* Not all certifications held by the laboratory are applicable to the results reported in the attached report.
* Accreditation is only applicable to the test methods specified on each scope of accreditation held by Pace Analytical.
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
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