WS-9716_44919_CA_CAPR_20230802

Corrective Action Performance Report
Crossroads Center-C
134 Arnold Road
Lexington, Davidson County, North Carolina 27295
NCDEQ Incident #44919
ATC Project # SLC4491903
Submittal Date:
August 2, 2023
Prepared for:
North Carolina Department of Environmental Quality
Division of Waste Management – Underground Storage Tank Section
1646 Mail Service Center
Raleigh, North Carolina 27699-1646
Prepared By:
ATC Associates of North Carolina, P.C.
7606 Whitehall Executive Center Drive, Suite 800
Charlotte, North Carolina 28273
p: [phone] / f: [phone]
7606 Whitehall Executive Center Drive
Suite 800
Charlotte, NC 28273
Tel: [phone]
Fax: [phone]
www.atcgroupservices.com
N.C. Engineering License No. C-1598

August 2, 2023

Mr. Scott Ryals, P.E.
North Carolina Department of Environmental Quality
Division of Waste Management - Underground Storage Tank Section
1646 Mail Service Center
Raleigh, North Carolina 27699-1646

Re: Corrective Action Performance Report
Crossroads Center-C
134 Arnold Road
Lexington, Davidson County, North Carolina 27295
NCDEQ Incident #44919
ATC Project #SLC4491903
Task Authorization: TA-03

Dear Mr. Ryals:

ATC Associates of North Carolina, P.C., under contract to the North Carolina Department
of Environmental Quality, submits the enclosed Corrective Action Performance Report for
Crossroads Center-C. The report presents investigative procedures, field activities, and
laboratory analytical results for the combined Mobile Multi-Phase Extraction and Air
Sparge event and groundwater monitoring event conducted from May 2023 to June 2023.
If you have any questions or require additional information, please contact our office at
[phone].

Sincerely,

ATC Associates of North Carolina, P.C.

Kyle Harris Al Quarles, P.G.
Staff Scientist Senior Project Manager

Corrective Action Performance Report August 2, 2023
Crossroads Center-C, Lexington, NC (Incident No 44919) ATC Project # SLC4491903

TABLE OF CONTENTS

1.0 SITE IDENTIFICATION .......................................................................... 1 
2.0 EXECUTIVE SUMMARY ........................................................................ 2 
3.0  SITE DESCRIPTION .............................................................................. 3 
3.1 Site Characterization.................................................................... 3 
3.2 Site Background .......................................................................... 3 
3.3 Site and Regional Geology .......................................................... 4 
3.4 Site and Regional Hydrogeology ................................................. 5 
4.0 MOBILE MULTI-PHASE EXTRACTION/AIR SPARGING EVENT ........ 5 
5.0 GROUNDWATER CHARACTERIZATION............................................. 6 
5.1 Groundwater Levels ..................................................................... 6 
5.2 Groundwater Quality .................................................................... 6 
6.0 CONCLUSIONS AND RECOMMENDATIONS ...................................... 7 

FIGURES

Figure 1 Site Vicinity Map
Figure 2 Site Map
Figure 3 Groundwater Elevation Map
Figure 4 Groundwater Analytical Map

TABLES

Table 1 Well Construction and Groundwater Elevation Data
Table 2 Field Parameters
Table 3 Recent Groundwater Analytical Results
Table 4 Historical Groundwater Analytical Results

APPENDICES

Appendix A Conceptual Site Model
Appendix B Field Notes and Photographic Log
Appendix C Notice of Intent and Injection Event Record
Appendix D MMPE/AS Report
Appendix E Laboratory Analytical Report
Corrective Action Performance Report
Crossroads Center-C, Lexington, NC (Incident No 44919)
1.0 SITE IDENTIFICATION
1. Site Identification
Date of Report: August 2, 2023
August 2, 2023
ATC Project# SLC4491903
Facility I.D.: 00-0-0000029082 UST Incident Number (if known): __ 4~4~9~1~9 ____ _
Site Risk: Intermediate Site Rank: 135D Land Use Category: """'C""""o-'-'-m=m'-"-e"""r--"-c=ia"--I ____ _
Site Name: Crossroads Center-C
Site Street Address: 134 Arnold Road --'---"----'--'-'-'-'--'--''---'-=--'--=-"'-=-------------------City/Town: Lexington Zip Code: 27295 County: _D_a_vi_d_so_n ____ _
Description of Geographical Data Point: _C_e_nt_e_r_o_f _on_-_s_ite_ca_n_o~p_y ________ _
Location Method: Google Earth ·
Latitude (decimal degrees): 35.867193° Longitude (decimal degrees): -80.250738°
2. Information about Contacts Associated with the Leaking UST System
UST Owner: 24/7/365 Inc
Address: 1545 Lewisville Clemmons Road Tel.: [phone]
UST Operator:_2_4_/_7/_3_6_5~1_nc ______________________ _
Address: 1545 Lewisville Clemmons Road Tel.: [phone]
Property Owner:-=24~/~7~/3~6~5-'---'-'-ln~c~---------------------
Address: 1545 Lewisville Clemmons Road, Clemmons, NC 27012 Tel.: [phone]
Property Occupant:_V....:....;:c.ac=a=n-'-"-t ______________________ _
Address: Not Available t Tel: Not Available
Consultant/Contractor: ATC Associates of North Carolina P.C.
Address: 7606 Whitehall Exec Ctr Dr, Ste 800, Charlotte, NC 28273 Tel.: [phone]
Analytical Laboratory: Pace Analytical Services, LLC State Certification No._1=2=-------
Address: 9800 Kincey Ave., Suite 100, Huntersville, NC 28078 Tel: [phone]
3. Information about Release
Date Discovered: 09/21/2017 ---------------------------Estimated Quantity of Release:~U~n~k~n'-"-o-'-'w-'-'n _________________ _
Cause of Release: Unknown ~~--"--'-'-'-'-------------------------Source of Release (Dispenser/Piping/UST): Gasoline and Diesel USTs
Sizes and contents of UST system(s) from which the release occurred: One 3,000-gallon •
diesel, two 6,000-gallon gasoline USTs, and one 5,000-gallon gasoline UST.
Criteria Used to Classify Risk: VOCs in groundwater exceed GCLs
4. Information about the Corrective Action Performance Report
Date(s) of MMPE/AS Event(s): May 22 -26, 2023
Date(s) of Groundwater Monitoring Events(s): June 13, 2023
5. Certification
I, Al Quarles, a Licensed Geologist for ATC Associates of North
Carolina, P.C., do certify that the information contained in this
report is correct and accurate to the best of my knowledge.
ATC Associates of North Carolina, P.C. is licensed to practice
engineering and geology ,in North Carolina. The certification
number of the company or corporation is C-1598 for engineering
and C-27 4 for geology.
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Corrective Action Performance Report August 2, 2023
Crossroads Center-C, Lexington, NC (Incident No 44919) ATC Project # SLC4491903

2
2.0 EXECUTIVE SUMMARY
ATC Associates of North Carolina, P.C. (ATC) has completed a Corrective Action Performance
Report documenting the Mobile Multi-Phase Extraction and Air Sparge (MMPE/AS) event
between May 22 and May 26, 2023, and the groundwater monitoring event on June 13, 2023, at
the Crossroads Center-C site. The report has been completed based on a March 9, 2023, Task
Authorization (TA-03) and a March 20,2023 Change Order approved by the Trust Fund Branch
of the UST Section, Division of Waste Management, North Carolina Department of
Environmental Quality (NCDEQ). The work was performed as part of the State Lead Contract
#N122019A between the NCDEQ and ATC.

In accordance with TA-03, a 96-hour Mobile Multi-Phase Extraction/Air Sparging (MMPE/AS) event
was completed using monitoring wells MW-3 and MW-10 as the extraction and wells MW-1 and
VEW-1 as the air sparging wells (ozone-enhanced). A groundwater monitoring event was
conducted at the site by ATC including monitoring wells MW-1, MW-3, and MW-10. Groundwater
samples were analyzed for volatile organic compounds (VOCs). Concentrations were compared to
the Gross Contamination Levels (GCLs) and the North Carolina 15A NCAC 2L .0202 Groundwater
Quality Standards (2L Standards). The findings from the recent and historical activities are
summarized below and in the Conceptual Site Model (Appendix A):

 There are no water supply wells within 1,000 feet of the source area or surface water
bodies within 500 feet of the source area;
 Municipal water is provided to the area;
 The MMPE event removed an estimated 260.61 pounds (42.36 gallons equivalent) of
VOCs, and 4,505 gallons of water;
 Light non-aqueous phase liquid (LNAPL) was not detected in the monitoring wells;
 Benzene (5,780 micrograms per liter or µg/L) was detected in well MW-10 above the
GCL of 5,000 µg/L;
 VOCs exceeded the 2L Standards in MW-1, MW-3, and MW-10;
 Dissolved oxygen levels measured in selected wells on May 26, 2023 immediately
following the combined MMPE/AS event indicated a slight increase in MW-4 but no
increases in other wells. However, during the sampling event on June 13, 2023, elevated
dissolved oxygen levels were observed in wells MW-1 and MW-10 indicating a longer-
term increase from the MMPE/AS event; and
 The depth to groundwater ranged from 6.72 feet below top of casing (ft-toc) in MW-13 to
9.24 ft-toc in MW-1, and groundwater flow is indicated to be to the southwest.

Benzene in well MW-10 continues to exceed the GCL. Between January 2023 and June 2023, the
benzene concentration in well MW-10 decreased by approximately 12%. Benzene in MW-3 and
naphthalene in MW-10 remained below their respective GCLs. Concentrations of VOCs have
generally decreased in wells MW-1 and MW-3, while changes in concentrations have fluctuated in
well MW-10 since January 2023. The extent of the GCLs is defined with the additional wells MW-
12 and MW-13.

ATC recommends sampling wells MW-1 and MW-10 in December 2023 to evaluate the
potential for reduced benzene concentrations by biological degradation with the elevated DO
observed in these two wells. Note that a 15% benzene concentration in well MW-10 would be at
the GCL.

Corrective Action Performance Report August 2, 2023
Crossroads Center-C, Lexington, NC (Incident No 44919) ATC Project # SLC4491903

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3.0 SITE DESCRIPTION
3.1 Site Characterization
ATC, under contract to the NCDEQ, provided environmental consulting services at the Crossroads
Center-C site, which is located at 134 Arnold Road, in Lexington, Davidson County, North Carolina.
Figure 1 depicts the site on a topographic map. The site is currently a vacant building at the
northwest intersection of Arnold Road and Old U.S. Highway 52. A railroad line is located along the
eastern site boundary (Figure 2). The topography slopes to the southwest, with elevations of
approximately 824 feet in the northeast area of the site to approximately 820 feet in the
southwestern area of the site. A generally north-south trending topographic ridge is located east of
the railroad line.

No water supply wells have been identified within 1,000 feet of the source area. The nearest
surface water body is approximately 650 feet to the southwest (Figure 3), according to the
Davidson County GIS website.

3.2 Site Background
The site’s UST system formerly consisted of five tanks, two 6,000-gallon gasoline tanks, one
5,000-gallon gasoline tank, one 3,000-gallon diesel tank, and one 2,000-gallon kerosene tank. The
tanks were reportedly in use through 2012. In April 1994, a 2,000-gallon kerosene UST and
associated piping for the UST were removed by Geo-Environmental Consultants with no evidence
of release at the time. NCDEQ issued a closure letter for the tank in July 1995.

A Phase II Environmental Site Assessment dated July 2002 performed by Environmental
Consulting Services, LTD (ECS) documented a petroleum release at the site based on
contamination present in both the soils and groundwater (Incident #24552). The source of the
release was suspected to be from the two 6,000-gallon gasoline USTs. Assessment activities
included: the installation of well MW-1 in July 2002 and wells MW-2 through MW-4 and VEW-1 in
August 2002; and soil sampling collected during well installation. Soil contamination was found to
be above soil-to-groundwater MSCCs and groundwater contaminants above NCDEQ 2L
Standards. The incident (#24552) was closed in September 2002 with a Notice of Residual
Petroleum (NORP) with a groundwater restriction for water supply wells and a soil restriction for
soil excavation, but no residential land use restriction. At the time the NORP was issued a site
check of the UST system had not been completed.

Between May 2003 and December 2021, LR&S Inc. operated the UST system, until the UST
permit to operate expired on December 31, 2012. LR&S Inc. was dissolved by the Secretary of
State on September 28, 2015.

The current owner purchased the property on January 11, 2017.

In September 2017 Progress Environmental Group, Inc. (Progress) removed the remaining four
USTs and one AST remaining at the site. Soil contamination was found to be above NCDEQ
Action Levels during the removal process and a hole was observed in one of the 6,000-gallon
gasoline USTs. Total Petroleum Hydrocarbons-Diesel Range Organics (TPH-DRO) and TPH-
Gasoline Range Organics (TPH-GRO) were found to be above their respective NCDEQ Action
Levels in various soil samples from the tank pit. No additional soils were removed from the site
during the tank removal. Incident #44919 was assigned to the reported release.

Corrective Action Performance Report August 2, 2023
Crossroads Center-C, Lexington, NC (Incident No 44919) ATC Project # SLC4491903

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In 2018, Progress conducted a Limited Site Assessment that included the installation and sampling
of two additional monitoring wells, MW-10 and MW-11, and soil sampling. Soil contamination was
revealed above the NCDEQs Soil-to-Groundwater and Residential MSCCs and groundwater
contamination was revealed above the GCLs for benzene. One water-supply well was identified
within 500 feet of the site. A follow-up groundwater monitoring event by Progress that year found
an increase in previously identified constituent concentrations. No other remediation activities were
taken at this time.

In August 2019, Progress conducted a groundwater sampling event on wells MW-1 through MW-4,
MW-10, MW-11, and VEW-1. No LNAPL was detected during the sampling event and benzene
was detected above the GCL of 5,000 micrograms per liter (µg/L). Progress reported that the
contaminant plume appeared to be migrating to the southwest. They also reported that the rise in
the water column between 2018 and 2019 appeared to mobilize soil contaminants causing the
sudden spike in contaminant levels in the groundwater.

In May 2021 NCDEQs Corrective Action Branch performed a site inspection and found that wells
MW-3, MW-4, and MW-10 were in good condition, wells MW-1 and VEW-1 were uncovered but
may be usable, well MW-2 could not be located, and well MW-11 was reportedly destroyed. The
site was accepted to the State Lead program in May 2021.

On October 8, 2021, ATC conducted a groundwater monitoring event including wells MW-1
through MW-4, MW-10, and VEW-1 with analysis for VOCs. Benzene was detected at
concentrations higher than the GCL in wells MW-3 and MW-10, and naphthalene was detected in
well MW-10 above the GCL. Several VOCs exceeded the 2L Standards in wells MW-1, MW-3,
MW-4, MW-10, and VEW-1.

On January 9, 2023, ATC oversaw the installation of two offsite monitoring wells, MW-12 and MW-
13, for the purpose of evaluating the extent of GCL exceedances, primarily for benzene. A
groundwater monitoring event was conducted on January 13, 2023, including wells MW-1, MW-3,
MW-10, MW-12, and MW-13. The analytical results indicated that only benzene in well MW-10
remained above the GCL at a concentration of 6,590 µg/L. Benzene concentrations in wells MW-
12 and MW-13 were at 77 µg/L and 4.9 µg/L, respectively. VOC concentrations had generally
decreased throughout the site since October 2021.

3.3 Site and Regional Geology
The Geologic Map of North Carolina produced by the North Carolina Geologic Survey (1985)
indicates that the property is located within the Charlotte Belt of the Piedmont Physiographic
Province. Rocks of the Piedmont are crystalline igneous and metamorphic rocks that were formed
during Appalachian mountain building events during the Paleozoic Era, several hundred million
years ago. The metamorphic rock type beneath the site is metagabbro, metadiorite, and mafic
plutonic-volcanic complexes. The shallow subsurface in most areas of the Piedmont contains
residual soil overburden, including structure-free residuum, saprolite, and partially weathered rock
(PWR), that derive from in-place weathering of the crystalline bedrock. Occasional areas
containing recent deposits of alluvium in the uppermost subsurface are found near streams and
rivers. Saprolite and PWR typically contain some relict structures from the original rock material.
Depth to rock ranges from ground surface at occasional outcrops to depths of up to 100 feet in
areas of easily weathered rock. Bedrock was not encountered at a depth of 45 feet below ground
surface (ft-bgs) based on the boring for monitoring well VEW-1.

Corrective Action Performance Report August 2, 2023
Crossroads Center-C, Lexington, NC (Incident No 44919) ATC Project # SLC4491903

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3.4 Site and Regional Hydrogeology
The shallow aquifer occurrence varies in depth from ground surface at springs, creeks, and
rivers to as deep as 50 feet or more beneath upland surfaces in some parts of the Piedmont.
Groundwater in the alluvium or unconsolidated residual material, including saprolite and PWR,
usually behaves as an unconfined, or water table, aquifer and will yield water with head
elevation equivalent to the first elevation where water was encountered. Permeability varies with
lithology and is typically relatively low in residual soils, with higher permeability in saprolite or
PWR due to relict rock texture and variable susceptibility to weathering exhibited by different
minerals in the rock. Groundwater flow in residual soils or alluvium is usually in rough
concurrence with local topographic conditions and is toward local drainage features.

The bedrock fractures or other planar features generally constitute the bedrock aquifer, with the
surrounding rock material being effectively impermeable. Along with fractures, contacts between
rock bodies probably constitute zones of significant groundwater occurrence in the bedrock. The
surrounding material and overlying residuum tend to make the bedrock aquifer a semi-confined
aquifer. That is, the overlying water and soil weight normally results in pressure that causes
water in a borehole which intersects a fracture or other feature to rise above the elevation of the
fracture or feature. Such features may not occur on predicable trends, at the same elevations,
or even be present or directly connected in separate boreholes. In areas adjacent to creeks the
bedrock groundwater generally discharges to the residuum or alluvium and then into the surface
water. In upland areas away from surface water drainages, the bedrock aquifer is generally
recharged by downward infiltration of residuum or alluvial aquifer water at locations where
fractures intersect the bedrock surface.

When gradient conditions are discussed, upgradient properties are in locations which could,
based on topographic or groundwater elevation analysis, have shallow groundwater migration
from them toward the site. Cross-gradient sites are nearby properties with equivalent elevation
to the site, which would be unlikely to have groundwater migration from them parallel to the site,
and downgradient sites are nearby properties, which likely receive groundwater migration from
beneath the site. Based on topography and historical groundwater level data, groundwater flow
is to the south-southwest. The available historical depth to groundwater data indicate that the
depth to groundwater has generally ranged from approximately 6 to 15 ft-bgs.

4.0 MOBILE MULTI-PHASE EXTRACTION/AIR SPARGING EVENT
From May 22 through May 26, 2023, Advanced Environmental Services, Inc. (Advanced)
performed a 96-hour combined MMPE/AS event. ATC personnel provided onsite supervision for
event set-up and break-down. Groundwater monitoring wells MW-3 and MW-10 were used as
the extraction wells, while MW-1 and VEW-1 were used for air sparging. Advanced used a
blower with an ozone generator attached to the inlet of the blower.

The depth to water was measured in wells MW-1, MW-3, MW-4, and MW-10, MW-12, and
VEW-1 and dissolved oxygen (DO) was measured in wells MW-1, MW-3, MW-4, and MW-10
and VEW-1 prior to and following the MMPE event. DO was measured using the “low flow”
purging method to ensure sampling of groundwater from the aquifer and not of standing water in
the well casing. LNAPL was not detected in any well during onsite activities. The depth to
groundwater data are presented in Table 1, and the DO levels are presented in Table 2.

The pre-MMPE/AS DO levels were less than 1 milligrams per liter (mg/L) in the shallow wells,
and slightly above 1 mg/L in well VEW-1. The post-MMPE/AS DO levels were not significantly
Corrective Action Performance Report August 2, 2023
Crossroads Center-C, Lexington, NC (Incident No 44919) ATC Project # SLC4491903

6
higher than the pre-MMPE/AS DO levels, although the DO in well MW-4 increased from 0.23 to
1.02 mg/L.

During MMPE activities, a liquid ring vacuum pump unit is plumbed to the designated extraction
points, and a drop pipe is extended into the well through an airtight seal at the TOC and into the
water column. Throughout the MMPE process, a cone of depression forms around the
designated recovery points by drawing down the groundwater surface levels, thus causing
impacted water surrounding the recovery point to be extracted. Petroleum-impacted soil vapor
within the cone of depression and the overlying vadose zone is removed as part of the MMPE
extraction process. The ozone-enhanced air sparging was conducted at pressures of
approximately 5 psi and flows of approximately 100 cubic feet per minute or cfm (4,700 feet per
minute within a 2-inch diameter pipe). The ozone-enhanced air sparging was conducted in an
effort to increase dissolved oxygen to the subsurface along with the stripping of VOCs from the
groundwater.

The 96-hour MMPE/AS event was initiated on May 22, 2023, and ended on May 26, 2023. The
effluent air stream was monitored for temperature, velocity, relative humidity, and organic vapor
concentrations. Calculated effluent airflow rates and the vapor concentration readings from the
vacuum truck indicated that an estimated 260.61 pounds (42.36 equivalent gallons) of
petroleum hydrocarbons were recovered as vapor during the MMPE event. The MMPE event
generated approximately 4,505 gallons of petroleum impacted groundwater, as indicated on the
manifest and MMPE/AS report.

ATC field notes from the MMPE set-up and break-down supervision are presented in Appendix
B. The NOI and Injection Event Record are included in Appendix C. A report provided by
Advanced which includes monitoring data, emissions and recovery calculations, and waste
disposal manifests, is provided in Appendix D.

5.0 GROUNDWATER CHARACTERIZATION
5.1 Groundwater Levels
On June 13, 2023, a groundwater monitoring event was conducted for monitoring wells MW-1,
MW-3, and MW-10. Wells MW-12 and MW-13 were gauged for depths to water and total well
depths. Figure 2 depicts the well locations on a site map. Well construction and groundwater
level data are summarized in Table 1. Based on the June 2023 data, groundwater flow is to the
southwest with a hydraulic gradient of 0.011 feet/foot. The June 2023 groundwater elevations
are presented on Figure 4. The June 13, 2023, groundwater levels were approximately 0.7 feet
higher than the January 13, 2023, groundwater levels, with groundwater levels above the
screen in wells MW-1, MW-3, and MW-10. Field notes and photographs from the June 13, 2023,
groundwater monitoring event are presented in Appendix B.

5.2 Groundwater Quality
On June 13, 2023, ATC collected groundwater samples from monitoring wells MW-1, MW-3,
and MW-10. During sample activities, a three-volume well purge was implemented prior to
groundwater sample collection to ensure a representative groundwater sample. Field
parameters are presented in Table 2. Note that DO levels measured during the sampling of the
wells where higher than those measured after the MMPE/AS event in wells MW-1 (from 0.70
mg/L to 4.14 mg/L) and MW-10 (from 0.10 mg/L to 7.81 mg/L). The DO level in well MW-3 did
not change significantly (from 0.62 mg/L to 0.55 mg/L).
Corrective Action Performance Report August 2, 2023
Crossroads Center-C, Lexington, NC (Incident No 44919) ATC Project # SLC4491903

7
The water samples were collected in laboratory-supplied, preserved containers; entered into
chain of custody control; placed on ice; and shipped to North Carolina accredited Pace
Analytical Services, Inc. in Huntersville, North Carolina. The groundwater samples were
analyzed by Standard Method 6200B, including oxygenates. The laboratory analytical report
and chain-of-custody documentation is included in Appendix E.

The recent groundwater analytical results are summarized in Table 3. The historical
groundwater analytical results are summarized in Table 4. A groundwater quality map of the
recent results with exceedances of the 2L Standards is presented as Figure 5. The
groundwater analytical results were compared to the 2L Standards and GCLs. The updated
Conceptual Site Model is presented Appendix A. Groundwater analytical results indicated the
following:

 Benzene (5,780 µg/L) was detected in well MW-10 above the GCL of 5,000 µg/L; and
 VOCs exceeded the 2L Standards in MW-1, MW-3, and MW-10.

Benzene in well MW-10 continues to exceed the GCL. Between January 2023 and June 2023, the
benzene concentration in well MW-10 decreased by approximately 12%. Benzene in MW-3 and
naphthalene in MW-10 remained below their respective GCLs. Concentrations of VOCs have
generally decreased in wells MW-1 and MW-3, while changes in concentrations have fluctuated in
well MW-10 since January 2023. The extent of the GCLs is defined with the additional wells MW-
12 and MW-13.

Historically, concentrations of benzene in well MW-10 have increased with rising groundwater
levels and decrease with falling groundwater levels, suggesting a possible zone of contaminated
soil near the seasonal high groundwater levels.

As part of ATC’s quality assurance and quality control (QA and QC) measures, a data review of
the laboratory report was conducted. During the review, it was found that the samples were
received from the laboratory in acceptable condition and properly preserved. The samples were
analyzed within correct holding times and reported within the lab report, and the chain of
custody was properly completed by all parties. ATC collected one field blank during groundwater
monitoring activities with a detection of methylene chloride, a non-petroleum related VOC not
reported in the site samples. The laboratory QC report shows that laboratory reagent blanks
(LRBs) and laboratory control samples/laboratory control sample duplicates (LCSs/LCSDs)
were analyzed for each method that was used for the original samples. The LRB indicated no
detections and the LCS/LCSD results were within acceptable laboratory control limits. Refer to
the laboratory report in Appendix E for details regarding QA results for the laboratory samples
and any noted exceptions.

6.0 CONCLUSIONS AND RECOMMENDATIONS
On behalf of the Trust Fund Branch of the NCDEQ UST Section, ATC has completed
assessment activities for the Crossroads Center-C UST site (incident no 44919), located at 134
Arnold Road, Lexington, Davidson County, North Carolina. The findings from the recent and
historical activities are summarized below and in the Conceptual Site Model (Appendix A):

 There are no water supply wells within 1,000 feet of the source area or surface water
bodies within 500 feet of the source area;
 Municipal water is provided to the area;
Corrective Action Performance Report August 2, 2023
Crossroads Center-C, Lexington, NC (Incident No 44919) ATC Project # SLC4491903
8
The MMPE event removed an estimated 260.61 pounds (42.36 gallons equivalent) of
VOCs, and 4,505 gallons of water;
LNAPL was not detected in the monitoring wells;
Benzene (5,780 µg/L) was detected in well MW-10 above the GCL of 5,000 µg/L;
VOCs exceeded the 2L Standards in MW-1, MW-3, and MW-10;
Dissolved oxygen levels measured in selected wells on May 26, 2023 immediately
following the combined MMPE/AS event indicated a slight increase in MW-4 but no
increases in other wells. However, during the sampling event on June 13, 2023, elevated
dissolved oxygen levels were observed in wells MW-1 and MW-10 indicating a longer-
term increase from the MMPE/AS event; and
The depth to groundwater ranged from 6.72 ft-toc in MW-13 to 9.24 ft-toc in MW-1, and
groundwater flow is indicated to be to the southwest.
Benzene in well MW-10 continues to exceed the GCL. Between January 2023 and June 2023, the
benzene concentration in well MW-10 decreased by approximately 12%. Benzene in MW-3 and
naphthalene in MW-10 remained below their respective GCLs. Concentrations of VOCs have
generally decreased in wells MW-1 and MW-3, while changes in concentrations have fluctuated in
well MW-10 since January 2023. The extent of the GCLs is defined with the additional wells MW-
12 and MW-13.
ATC recommends sampling wells MW-1 and MW-10 in December 2023 to evaluate the
potential for reduced benzene concentrations by biological degradation with the elevated DO
observed in these two wells. Note that a 15% benzene concentration in well MW-10 would be at
the GCL.

FIGURES
SITE VICINITY MAP
1"= 2,000'
1
Project Number:
Date:Scale:
Drawing File:
Figure:
App'd By:
Drn. By:
Ckd. By:
N
H:\2021\OTHER OFFICES\NORTH CAROLINA\NCDEQ-STATE LEAD\CROSSROADS CENTER\SLC4491901-VIC.DWG, FIG111/17/2021
SEE LOWER LEFT
CROSSROADS CENTER-C
134 ARNOLD ROAD
LEXINGTON, DAVIDSON COUNTY, NORTH CAROLINA
SLC4491901 DH
AQ
AQ
ARNOLD ROADSITEVEW-1MW-10MW-1MW-2MW-4MW-3SCALE: 1" = 20'200510 1520NLEGEND:SITE PROPERTY LINENOTE: ALL LOCATIONS ARE APPROXIMATEPARCEL LINEMW-1MONITORING WELLWell IdentificationMW-12MW-13MW-11DESTROYED MONITORING WELLWell IdentificationFigure:Drawing File:
Project Number:
Ckd. By:
Drn. By:
App'd By:
Ckd. Date:Scale:Date:H:\2023\1 OTHER OFFICES\NORTH CAROLINA\NCDEQ-STATE LEAD\CROSSROADS CENTER\SLC4491902-SITE.DWG, FIG2
SITE MAP02/15/2023SEE LOWER LEFTCROSSROADS CENTER-C
134 ARNOLD ROAD
LEXINGTON, DAVIDSON COUNTY, NORTH CAROLINA
SLC4491901AS SHOWNMS
AQ2NOTES:
1. Features shown are not an authoritative location, nor are they presented
to a stated accuracy.
COORDINATE SYSTEM:
NAD 1983 NORTH CAROLINA STATE PLANE FIPS 3200, US SURVEY FEET
500 FT.RADIUS1,000 FT.RADIUSLEGEND:SITE PROPERTY LINENOTE: ALL LOCATIONS ARE APPROXIMATEPARCEL LINESTREAMS/WETLANDS50SCALE: 1" = 200'2000100 150200NFigure:Drawing File:
Project Number:
Ckd. By:
Drn. By:
App'd By:
Ckd. Date:Scale:Date:H:\2021\OTHER OFFICES\NORTH CAROLINA\NCDEQ-STATE LEAD\CROSSROADS CENTER\SLC4491901-RECEPTOR.DWG, FIG3
RECEPTOR SURVEY MAP11/23/2021SEE LOWER LEFTCROSSROADS CENTER-C
134 ARNOLD ROAD
LEXINGTON, DAVIDSON COUNTY, NORTH CAROLINA
SLC4491901AS SHOWNDH
AQ3NOTES:
1. Features shown are not an authoritative location, nor are they presented
to a stated accuracy.
COORDINATE SYSTEM:
NAD 1983 NORTH CAROLINA STATE PLANE FIPS 3200, US SURVEY FEET
ARNOLD ROADSITEVEW-1MW-10MW-1MW-11MW-2MW-4MW-3MW-12MW-1390.27NM90.7490.7690.5090.3189.67NMLEGEND:SITE PROPERTY LINENOTE: ALL LOCATIONS ARE APPROXIMATEPARCEL LINEMW-190.76MONITORING WELLWell IdentificationRelative Groundwater Elevation (ft)GROUNDWATER FLOW DIRECTIONMW-11DESTROYED MONITORING WELLWell IdentificationSCALE: 1" = 20'0 510 1520N90.50GROUNDWATER ELEVATION CONTOUR(DASHED WHERE INFERRED) (ft)90.5090.2590.00Figure:Drawing File:
Project Number:
Ckd. By:
Drn. By:
App'd By:
Ckd. Date:Scale:Date:H:\2023\1 OTHER OFFICES\NORTH CAROLINA\NCDEQ-STATE LEAD\CROSSROADS CENTER\SLC4491903-POT.DWG, FIG4
GROUNDWATER ELEVATION MAP07/24/2023SEE LOWER LEFTCROSSROADS CENTER-C
134 ARNOLD ROAD
LEXINGTON, DAVIDSON COUNTY, NORTH CAROLINA
SLC4491903AS SHOWNBM
AQ4NOTES:
1. Features shown are not an authoritative location, nor are they presented
to a stated accuracy.
2. Groundwater samples collected on 06/13/23.
3. Only constituents exceeding the NCDEQ 2L Standards are shown.
4. DUE TO VARIABILITY OF GROUNDWATER ELEVATIONS,
CONTOURS ARE NOT PRESENTED. THE GROUNDWATER FLOW
ARROW IS BASED ON OCTOBER 8, 2021 DATA
COORDINATE SYSTEM:
NAD 1983 NORTH CAROLINA STATE PLANE FIPS 3200, US SURVEY FEET
ARNOLD ROADSITEVEW-1MW-10MW-1MW-2MW-4MW-3LEGEND:SITE PROPERTY LINENOTE: ALL LOCATIONS ARE APPROXIMATEPARCEL LINEMW-1MONITORING WELLWell IdentificationMW-12MW-13MW-11MW-11DESTROYED MONITORING WELLWell IdentificationSCALE: 1" = 20'0 510 1520NFigure:Drawing File:
Project Number:
Ckd. By:
Drn. By:
App'd By:
Ckd. Date:Scale:Date:H:\2023\1 OTHER OFFICES\NORTH CAROLINA\NCDEQ-STATE LEAD\CROSSROADS CENTER\SLC4491903-GW.DWG, FIG5
GROUNDWATER ANALYTICAL MAP07/24/2023SEE LOWER LEFTCROSSROADS CENTER-C
134 ARNOLD ROAD
LEXINGTON, DAVIDSON COUNTY, NORTH CAROLINA
SLC4491903AS SHOWNBM
AQ5NOTES:
1. Features shown are not an authoritative location, nor are they presented
to a stated accuracy.
2. Groundwater samples collected on 06/13/23.
3. Concentrations underlined values exceed the GCL.
4. Concentrations provided in micrograms per liter (µg/L).
COORDINATE SYSTEM:
NAD 1983 NORTH CAROLINA STATE PLANE FIPS 3200, US SURVEY FEET

TABLES
TABLE 1WELL CONSTRUCTION AND GROUNDWATER ELEVATION DATA Crossroads Center-C134 Arnold RoadLexington, Davidson County, North Carolina 27295NCDEQ Incident #4491906/27/2019 6.17----93.8310/08/2021 13.33----86.6701/13/2023 9.88----90.1205/22/2023 9.09----90.9105/26/2023 12.14----87.8606/13/2023 9.24----90.7606/27/2019--------10/08/2021 13.82----86.8001/13/2023 10.59----90.0306/27/2019 5.13----93.2610/08/2021 12.31----86.0801/13/2023 8.95----89.4405/22/2023 8.06----90.3305/26/2023 8.75----89.6406/13/2023 8.08----90.3106/27/2019 5.74----93.3610/08/2021 12.78----86.3201/13/2023 9.13----89.9705/26/2023 9.25----89.8505/22/2023 8.63----90.47Well IDDateInstalled1GroundwaterElevation(feet)TOCElevation(feet)Depth to Groundwater (feet below TOC)DateMeasuredWell Depth (feet below TOC)LNAPLThickness (feet)Screen Interval (feet below TOC)Depth to LNAPL (feet below TOC)8/6/2002Well Diameter (Inches)11MW-1MW-2MW-3MW-47/15/20028/7/20028/6/2002124.5524.7424.6725.1210 - 2510 - 2510 - 2510 - 25100.00100.6298.3999.10Page 1 of 2
TABLE 1WELL CONSTRUCTION AND GROUNDWATER ELEVATION DATA Crossroads Center-C134 Arnold RoadLexington, Davidson County, North Carolina 27295NCDEQ Incident #44919Well IDDateInstalledGroundwaterElevation(feet)TOCElevation(feet)Depth to Groundwater (feet below TOC)DateMeasuredWell Depth (feet below TOC)LNAPLThickness (feet)Screen Interval (feet below TOC)Depth to LNAPL (feet below TOC)Well Diameter (Inches)02/01/2018 13.75----85.9505/07/2018 9.22----90.4804/10/2019 8.25----91.4506/27/2019 5.89----93.8110/08/2021 13.00----86.7001/13/2023 10.38----89.3205/22/2023 8.78----90.9205/26/2023 12.60----87.1006/13/2023 8.96----90.7406/27/2019--------02/01/2018 14.90------01/13/202301/13/2023 9.01----89.6105/22/2023 8.23----90.3905/26/2023 8.82----89.8006/13/2023 8.35----90.2701/13/2023 6.69----89.7006/13/2023 6.72----89.6706/27/2019 6.20----93.6410/08/2021 13.29----86.5505/22/2023 9.10----90.7405/26/2023 13.93----85.91Notes:TOC = Top-of-casingNA = Not Available-- = Not Measured LNAPL = light non-aqueous phase liquidIf LNAPL is present in a well, groundwater elevation should be calculated by: [Top of Casing Elevation - Depth to Water] + [Free Product Thickness x 0.8581]Depth to water on 5/26/23 taken following the combined Mobile Multi-Phase Extraction/Air Sparging event99.84VEW-1 8/7/200240 - 4544.231MW-11 1/31/2018 Unknown Unknown1/31/201810 - 25--MW-1099.7224.69Well Destroyed10 - 25MW-12 1/9/2023 220.00 5 - 20 98.62MW-13 1/9/2023 220.00 5 - 20 96.39Page 2 of 2
TABLE 2FIELD PARAMETERSCrossroads Center-C134 Arnold RoadLexington, Davidson County, North Carolina 27295NCDEQ Incident #4491905/22/23------0.65------05/26/23------0.70------06/13/2324.430.244.14-536.205/22/23------0.56------05/26/23------0.62------06/13/2321.750.290.55135.505/22/23------0.23------05/26/23------1.02------05/22/23------0.90------05/26/23------0.10------06/13/2322.900.567.81-1246.505/22/23------1.18------05/26/23------1.89------Notes:°C = degrees CelsiusmS/cm = milliSiemens per centimetermg/L = milligrams per literORP = oxidation-reduction potentialmV= millivoltssu = standard units--- : Not MeasuredMW-1MW-3MW-4MW-10VEW-1Dissolved oxygen taken prior to and following the combined Mobile Multi-Phase Extraction/Air Sparging event (5/22/23 and 5/26/23), using a peristaltic pump and flow-through cellTemperature (°C)Conductivity (mS/cm)Dissolved Oxygen(mg/L)ORP(mV)pH(su)Well IDSample DatePage 1 of 1
TABLE 3 RECENT GROUNDWATER ANALYTICAL RESULTSCrossroads Center-C134 Arnold RoadLexington, Davidson County, North Carolina 27295NCDEQ Incident #44919Well IDDate CollectedBenzeneTolueneEthylbenzeneXylene (Total)Naphthalenen-ButylbenzeneDiisopropyl etherIsopropylbenzenen-Propylbenzene1,2,4-Trimethylbenzene1,3,5-Trimethylbenzene1 600 600 500 6 70 70 70 70 400 4005,000260,00080,00050,0006,0005,90070,00030,50026,10028,50024,100MW-1 06/13/23793 1,290 1,560 4,140 34314.3 <6.2 56.7114 930239MW-3 06/13/232,22051.4 359 96.3151<9.8 30.9 31.4 50.5 19.6 13.8MW-10 06/13/235,78012,600 2,320 8,020 516<61.2 <38.597.1 236 1,340341Notes:1) 15A NCAC 02L 0202 Groundwater Quality Standards (2L Standards).2) NCDEQ Division of Waste Management (DWM) Gross Contamination Levels (GCLs).Only constituents detected above the reporting limit are shownConcentrations are reported in micrograms per liter (µg/L)Concentrations in bold exceed the 2L StandardConcentrations in bold and underlined exceed the GCLJ = estimated concentration below the laboratory reporting limit Analytical Method2L Standard (1)GCL (2)Standard Method 6200BPage 1 of 1
TABLE 4 HISTORICAL GROUNDWATER ANALYTICAL RESULTSCrossroads Center-C134 Arnold RoadLexington, Davidson County, North Carolina 27295NCDEQ Incident #44919Well IDDate CollectedBenzeneTolueneEthylbenzeneTotal XylenesMethyl tert-butyl ether (MTBE)NaphthaleneBromomethanen-Butylbenzenesec-Butyl benzeneChloroformIsopropyl Ether2-HexanoneIsopropylbenzene4-Isopropyl toluene4-Methyl-2-Pentanonen-PropylbenzeneStyreneTetrachloroetheneTrichloroethene1,2,4-Trimethylbenzene1,3,5-TrimethylbenzeneVinyl AcetateEthanolter-Amyl AlcoholNaphthaleneLead Ethylene Dibromide (EDB)C5-C8 AliphaticsC9-C18 AliphaticsC9-C22 AromaticsC19-C36 AliphaticsEPA 625 LeadEPA 504.11 600 600 500 20 6 10 70 70 70 70 40 70 25 100 70 70 0.7 3 400 400 88 4,000 40 6 15 0.02 400 700 200 10,0005,000260,00080,00050,00020,0006,000100,0005,9008,80070,00070,00040,00030,50011,700100,00026,10070,0007003,00028,50024,10088,0004,000,00040,0006,00015,00050NE NE NE NE06/27/191,310 2,570 2,220 4,700ND691NA NA NA NA ND NA155NA NA364NA NA NA2,030 622NA NR NR NA NA NA NA NA NA NA10/08/211,440 3,710 2,020 6,370<0.1404,480<0.2808.85 7.73<0.2200.698 1.95 68.6 4.05 4.162757<0.220 <0.1802,130 503<1.00NRNRNANANANANANANA01/13/23763 1,400 1,640 4,860<8.4354<33.214.9<8.0 <8.6 <6.2 NA52.6NA NA1146.6J<5.8 <7.7894216NA <1440798JNA NA NA NA NA NA NA06/13/23793 1,290 1,560 4,140<8.4343<33.214.3<8.0 <8.6 <6.2 NR56.7NR NR114<5.8 <5.8 <7.7930239NR <1440 <728 NA NA NA NA NA NA NA07/04/19ND ND ND ND ND ND NA NA NA NA ND NA ND NA NA ND NA NA NA ND ND NA NR NR NA NA NA NA NA NA NA10/08/21<0.180 <0.220 <0.170 <0.210 <0.140 <0.470 <0.280 <0.180 <0.200 <0.220 <0.500 <0.380 <0.180 <0.089 <0.078 <0.190 <0.220 <0.220 <0.180 <0.190 <0.180 <1.00 NR NR NA NA NA NA NA NA NA06/27/1910,800147 1,770141130 288NA NA NA NA252NA86NA NA198NA NA NA151ND NA NR NR NA NA NA NA NA NA NA10/08/215,31063.51,81041.2<0.1404,660<0.28012.5 9.57<0.22043.5<0.38068.6 4.92<0.07895.12.14 0.563 0.312J 13.4 37.1<1.00NRNRNANANANANANANA01/13/232,72043.3 514 11.1J<10.6139<41.5 <12.2 <10.0 <10.846.9NA32.6NA NA55.7<7.3 <7.3 <9.6 <12.4 <8.3 NA <18002,810NA NA NA NA NA NA NA06/13/232,22051.4 359 96.3<8.4151<33.2 <9.8 <8.0 <8.630.9NR31.4NR NR50.5<5.8 <5.8 <7.719.6 13.8NR <1440 <728 NA NA NA NA NA NA NA06/27/19104.0ND53.5 489ND318NA NA NA NA NA NA110NA NA246NA NA NA1,860 906NA NR NR NA NA NA NA NA NA NA10/08/21374.28 2.82 22.2<0.14036.4<0.2804.64 4.53<0.220 <0.500 <0.38018.3 1.13<0.07816<0.2200.241J<0.180152 57.8 1.04JNR NR NA NA NA NA NA NA NA02/01/185,8707,000 1,130 5,020ND418NA NA NA NA ND NA ND NA NA198NA NA NA1,280340NA NR NR NA ND ND4,040 4,540 1,290NA05/07/1813,60018,300 1,850 7,870ND293NA NA NA NA165NA ND NA NA170NA NA NA1,210300NA NR NR NA NA NA NA NA NA NA04/10/1917,00021,600 2,370 9,220ND448NA NA NA NA130NA ND NA NA200NA NA NA1,470314NA NR NR NA NA NA NA NA NA NA06/27/1920,00026,200 2,330 8,240ND415NA NA NA NA96NA ND NA NA240NA NA NA1,280339NA NR NR NA NA NA NA NA NA NA10/08/215,95016,600 4,160 13,200<14.08,03033.1J 60.7 44.9J<22.0 <50.0 <38.018420J 48.6J511<22.0 <22.0 <18.03,380 814<100 NR NR NA NA NA NA NA NA NA01/13/236,59014,900 2,010 7,560<52.8414<208 <61.2 <50.0 <53.840.6JNA74.3NA NA175<36.5 <36.5 <47.91,190278NA <9020 <4550 NA NA NA NA NA NA NA06/13/235,78012,600 2,320 8,020<52.8516<208 <61.2 <50.0 <53.8 <38.5 NR97.1NR NR236<36.5 <36.5 <47.91,340341NR <9020 <4550 NA NA NA NA NA NA NAMW-11 02/01/18ND21.2 121 628ND28.8NA NA NA NA ND NA ND NA NA ND NA NA NA ND ND NA NR NR28.8NA NA ND4,610 2,421125MW-12 01/13/23770.9 7 19<0.42125<1.717.6 10.1 2.3<0.31 NA50NA NA25<0.29 <0.29 <0.38106 9NA <72.2170NA NA NA NA NA NA NAMW-13 01/13/234.90.46J<0.30 <0.340.72 1.1J<1.7 <0.491.4<0.430.33JNA1NA NA <0.34 <0.29 <0.29 <0.38 <0.50 <0.33 NA166J312NA NA NA NA NA NA NA06/27/19ND ND ND ND ND ND NA NA NA NA ND NA ND NA NA ND NA NA NA ND ND NA NR NR NA NA NA NA NA NA NA10/08/2138.1<0.220 <0.1700.285J 0.294J<0.470 <0.280 <0.180 <0.2001.65 1.18<0.3800.475J<0.089 <0.078 <0.190 <0.220 <0.220 <0.180<0.190<0.180<1.00NRNRNANANANANANANANotes:1) 15A NCAC 02L 0202 Groundwater Quality Standard (2L Standard). VPH = volatile petroleum hydrocarbonsNR = Not Reported2) NCDEQ Division of Waste Management (DWM) Gross Contamination Level (GCL). MADEP = Massachusetts Department of Environmental ProtectionOnly constituents detected above the reporting limit are shown J = estimated concentration below the laboratory reporting limit Concentrations are reported in micrograms per liter (µg/L) NE = Not EstablishedConcentrations in bold exceed the 2L StandardND = Not DetectedConcentrations in bold and underlined exceed the GCLNA = Not AnalyzedVOCs = volatile organic compoundsGrayed values and "<" indicate the compound was below the laboratory reporting limit 2L Standard (1)GCL (2)Analytical MethodMADEP Method VPH/EPHMW-10VEW-1Standard Method 6200BMW-1MW-2MW-3MW-4Page 1 of 1

APPENDIX A
CONCEPTUAL SITE MODEL
Site Name: Crossroads Center‐C Date:7/25/2023
Property Owner: 24/7/365, Inc Last Field Event Date:6/13/2023
Site Name:Crossroads Center‐C Release Discovery Date:9/21/2017
NCDEQ UST Incident No.:44919 Source of Release:UST System
Facility ID No.:00‐0‐0000029082 Estimated Volume of Release: Unknown
Risk Classification:Intermediate
Risk Rank:I135D Gasoline (leaded)x
Site Address:134 Arnold Road Gasoline (unleaded)
Site City, ST ZIP:Lexington, 27295 Gasoline (ethanol blend)
Site County:Davidson Diesel x
NCDEQ Regional Office:Winston‐Salem Kerosene x
Active UST Facility:No Heating Oil (#2)
USTs Present:No Heating Oil (>#2)
Motor Oil
Hydraulic Oil
Major Soil Type:Cecil Sandy Loam Used Oil
Surface Cover over impacted soil: Pavement, gravel and soil
Utilities within plume (Y/N/U):U
>S‐W MSCCs (Y/N/U):Y
>Residential MSCCs (Y/N/U):Y Site (Current):Vacant commercial
>Comm/Ind MSCCs (Y/N/U):N Site (Future):Commercial
North Adjacent:Agricultural
East Adjacent:Commercial (The Gun Store)
Litho‐Tectonic Zone Charlotte Belt South Adjacent:Agricultural
Geologic Formation West Adjacent:Commerical (Place of Praise)
Rock Type Metagabbro, metadiorite
Depth to Bedrock (ft bgs)>45 Municipal Water (Y/N/U):Y
Active Potable Wells <1000 ft (#/U):N
Active Potable Wells <500 ft (#/U):N
Depth to water (ft‐bgs)6‐15 Impacted Wells (Y/N/U):N
Gradient (ft/ft):0.011 Any wells <250 ft (Y/N/U):N
Direction (N E S W combo):SSW
Hydraulic Conductivity (ft/day): Unknown <500 ft (Y/N):N
Total Porosity (%):Unknown Type of Surface Water:N/A
Effective Porosity (%):Unknown Name of Nearest Stream:N/A
Flow Rate (ft/year):Unknown Stream Classification:N/A
COCs >2L (Y/N/U):Y Impacted Surface Water (Y/N/U):N/A
COCs >2L Extent Defined (Y/N):N
COCs >GCLs (Y/N/U):Y
COCs >GCLs (Wells):MW-10 (historically MW-3 also)>LEL in Structures:U
COCs >GCLs Extent Defined (Y/N):Y Vapors in Buildings:U
COCs >2B Standards by 10X (Y/N/U):NA Slab-on-grade or Crawlspace:Slab‐on‐grade
LNAPL (Y/N/U):N Dissolved VOCs <5 ft of Structures: N
LNAPL (Max Thickness ft):N/A LNAPL <15 ft of Structures:N
LNAPL (Wells):N/A Basement <30 ft of Dissolved COCs: N
LNAPL Extent Defined (Y/N):N/A
LNAPL (<5 ft beneath buildings/U):N/A
Utilities within plume (Y/N/U):Unknown
Alternative Water Source:
NORP:
Site Remediation:Possible, MMPE/AS/Air Injection
Soil Excavation:
AFVR:
MMPE:
SVE/AS:
Other:
Additional Support Documentation Available / Data Gaps:
Vapor
Comments:
Updated 7/25/2023.
Possible actions to closure:
1) monitored natural attenuation;
2) In-situ remediation by MMPE/ASPossible Path(s) to Closure
Approach (general discussion): Natural attenuation or MMPE/AS
Geologic Information
Water Supply
Groundwater Information
Surface Water
Soil Information
Receptor Information
Land Use / Zoning
CONCEPTUAL SITE MODEL 
Site Information Release Information
Petroleum Type Released

APPENDIX B
FIELD LOGS AND PHOTOGRAPHS
State Lead Project: Crossroads Center‐C ATC Project # SLC4491903 
Incident # 44919 UST # WS‐9716 

Photographic Log (6/13/23)
Crossroads Center‐C  Page 1 of 4 
www.atcgroupservices.com 
1. View of well MW-1.

2. View of well MW-1.
State Lead Project: Crossroads Center‐C ATC Project # SLC4491903 
Incident # 44919 UST # WS‐9716 

Photographic Log (6/13/23)
Crossroads Center‐C  Page 2 of 4 
www.atcgroupservices.com 
3. View of well MW-10.

4. View of well MW-10.
State Lead Project: Crossroads Center‐C ATC Project # SLC4491903 
Incident # 44919 UST # WS‐9716 

Photographic Log (6/13/23)
Crossroads Center‐C  Page 3 of 4 
www.atcgroupservices.com 
5. View of well MW-12.

6. View of well MW-12.
State Lead Project: Crossroads Center‐C ATC Project # SLC4491903 
Incident # 44919 UST # WS‐9716 

Photographic Log (6/13/23)
Crossroads Center‐C  Page 4 of 4 
www.atcgroupservices.com 
7. View of well MW-13.

8. View of well MW-13.

APPENDIX C
NOTICE OF INTENT AND INJECTION EVENT RECORD
Deemed Permitted GW Remediation NOI Rev. 2-17-2020 Page 1
NC Department of Environmental Quality – Division of Water Resources (DWR)

Print Clearly or Type Information. Illegible Submittals Will Be Returned as Incomplete.

DATE: April 11, 2023 PERMIT NO. (to be filled in by DWR)

NOTE- If this NOI is being submitted as notification of a modification of a previously issued NOI for this site (e.g.,
different injection wells, plume, additives, etc.) and still meets the deemed permitted by rule criteria, provide the
previously assigned permit tracking number and any needed relevant information to assess and approve injection:

Permit No. WI Issued Date:

A. WELL TYPE TO BE CONSTRUCTED OR OPERATED

(1) Air Injection Well……………………………..…. Complete sections B through F, J, M
(2) Aquifer Test Well……………………….……….. Complete sections B through F, J, M
(3) Passive Injection System………………….……... Complete sections B through F, H-M
(4) X Small-Scale Injection Operation…………………. Complete sections B through M
(5) Pilot Test…………………………………………. Complete sections B through M
(6) Tracer Injection Well………………………….…. Complete sections B through M
(7) In-Situ Thermal (IST) Well……………………… Complete sections B through M

B. STATUS OF WELL OWNER: State Government

NOTIFICATION OF INTENT (NOI) TO CONSTRUCT OR OPERATE INJECTION WELLS

The following are “permitted by rule” and do not require an individual permit when constructed in accordance
with the rules of 15A NCAC 02C .0200 (NOTE: This form must be received at least 14 DAYS prior to injection)

AQUIFER TEST WELLS (15A NCAC 02C .0220)
These wells are used to inject uncontaminated fluid into an aquifer to determine aquifer hydraulic characteristics.

IN SITU REMEDIATION (15A NCAC 02C .0225) or TRACER WELLS (15A NCAC 02C .0229):
1) Passive Injection Systems - In-well delivery systems to diffuse injectants into the subsurface. Examples include
ORC socks, iSOC systems, and other gas infusion methods (Note: Injection Event Records (IER) do not need to be
submitted for replacement of each sock used in ORC systems).

2) Small-Scale Injection Operations – Injection wells located within a land surface area not to exceed 10,000
square feet for the purpose of soil or groundwater remediation or tracer tests. An individual permit shall be required
for test or treatment areas exceeding 10,000 square feet.

3) Pilot Tests - Preliminary studies conducted for the purpose of evaluating the technical feasibility of a
remediation strategy in order to develop a full scale remediation plan for future implementation, and where the
surface area of the injection zone wells is located within an area that does not exceed five percent of the land surface
above the known extent of groundwater contamination. An individual permit shall be required to conduct more
than one pilot test on any separate groundwater contaminant plume.

4) Air Injection Wells - Used to inject ambient air to enhance in-situ treatment of soil or groundwater.

5) In-Situ Thermal Wells (IST) – Used to ‘heat’ contaminated groundwater to enhance remediation.

Deemed Permitted GW Remediation NOI Rev. 2-17-2020 Page 2

C. WELL OWNER(S) – State name of Business/Agency, and Name and Title of person delegated authority to
sign on behalf of the business or agency:
Name(s): NCDEQ Division of Waste Management, UST Section, State Lead Program
Mailing Address: 1636 Mail Service Center
City: Raleigh State: _NC___ Zip Code:27699 County: Wake
Day Tele No.: 919-707-8166 Cell No.:
EMAIL Address: [e-mail] Fax No.:
D. PROPERTY OWNER(S) (if different than well owner/applicant)
Name and Title: Cory Albright
Company Name
Mailing Address: 4774 US Hwy 601 N
City: Mocksville State: NC____ Zip Code: 27628 County: Davidson
Day Tele No.: Cell No.: 336-341-6324
EMAIL Address: Fax No.:
E. PROJECT CONTACT (Typically Environmental Consulting/Engineering Firm)
Name and Title: Al Quarles, Senior Project Manager
Company Name ATC Associates of North Carolina, PC
Mailing Address: 7606 Whitehall Executive Center Drive, Suite 800
City: Charlotte State: _NC___ Zip Code: 28273 County: Mecklenburg
Day Tele No.: 704-529-3200 Cell No.: 803-984-6764
EMAIL Address:[e-mail] Fax No.:
F. PHYSICAL LOCATION OF WELL SITE
(1) Facility Name & Address: TF#44919, Crossroads Center-C
134 Arnold Road, Lexington, NC 27295
City: Lexington County: Davidson Zip Code: 28625
(2) Geographic Coordinates: Latitude**: o ′ ″ or 35.867290°
Longitude**: o ′ ″ or -80.250857°
Reference Datum: UST Basin Accuracy:
Method of Collection: Google Earth
**FOR AIR INJECTION AND AQUIFER TEST WELLS ONLY: A FACILITY SITE MAP WITH PROPERTY
BOUNDARIES MAY BE SUBMITTED IN LIEU OF GEOGRAPHIC COORDINATES.
G. TREATMENT AREA
Land surface area of contaminant plume: ~19,800 (2L); ~1,500 (GCL-Benzene) square feet
Land surface area of inj. well network: ~4,245 (overlapping VEW-1 and MW-1) square feet (< 10,000 ft2 for
small-scale injections)
Percent of contaminant plume area to be treated: ~20% (must be < 5% of plume for pilot test injections)

Deemed Permitted GW Remediation NOI Rev. 2-17-2020 Page 3

H. INJECTION ZONE MAPS – Attach the following to the notification.
(1) Contaminant plume map(s) with isoconcentration lines that show the horizontal extent of the
contaminant plume in soil and groundwater, existing and proposed monitoring wells, and existing and
proposed injection wells; and
(2) Cross-section(s) to the known or projected depth of contamination that show the horizontal and vertical
extent of the contaminant plume in soil and groundwater, changes in lithology, existing and proposed
monitoring wells, and existing and proposed injection wells.
(3) Potentiometric surface map(s) indicating the rate and direction of groundwater movement, plus existing
and proposed wells.

I. DESCRIPTION OF PROPOSED INJECTION ACTIVITIES AT THE SITE – Provide a brief narrative
regarding the cause of the contamination, and purpose, scope, goals of the proposed injection activity:
Release of gasoline from UST system. Intermediate Risk, goal to reduce benzene to below the 5,000 µg/L Gross
Contamination Level (recently 6,590 µg/L in monitoring well MW-10). Ozone-enhanced air sparging in well
VEW-1 into the groundwater and in well MW-1 above the groundwater surface with some migration into
groundwater. To be conducted during the 96-hour Mobile-Multiphase Extraction Event (MMPE) using wells
MW-1 and MW-10 as total fluid extraction wells. The injection will be performed at approximately 3 cfm for
for VEW-1 and 10 scfm for MW-1. Radius of influence anticipated to be 30 feet with the two overlapping zone
of influence. The five-day injection event is scheduled to begin the week of May 22, 2023.

J. WELL CONSTRUCTION DATA

(1) No. of injection wells: 2 Proposed 0 Existing (provide NC Well
Construction Record (GW-1) for each well)
(2) Appx. injection depths (BLS): 10-25 feet (MW-1) and 40-45 feet (VEW-1)
(3) For Proposed wells or Existing wells not having GW-1s, provide well construction details for each
injection well in a diagram or table format. A single diagram or line in a table can be used for
multiple wells with the same construction details. Well construction details shall include the
following (indicate if construction is proposed or as-built):
(a) Well type as permanent, Geoprobe/DPT, or subsurface distribution infiltration gallery
(b) Depth below land surface of casing, each grout type and depth, screen, and sand pack
(c) Well contractor name and certification number

K. INJECTION SUMMARY

NOTE: Only injectants approved by the epidemiology section of the NC Division of Public Health, Department
of Health and Human Services can be injected. Approved injectants can be found online at
http://deq.nc.gov/about/divisions/water-resources/water-resources-permits/wastewater-branch/ground-water-
protection/ground-water-approved-injectants. All other substances must be reviewed by the DHHS prior to use.
Contact the UIC Program for more info if you wish to get approval for a different additive. However, please
note it may take 3 months or longer. If no injectants are to be used use N/A.

Injectant: Ozone (160-700 mg/L vapor) Total Amt. to be injected (gal)/event: ~75,000 cubic feet vapor

Total Amt. to be injected (gal)/event: ~75,000 cubic feet vapor
Deemed Permitted GW Remediation NOI Rev. 2-17-2020 Page 4

No. of separate injection events: 1 Total Amt. to be injected (gal): ~75,000 cubic feet vapor

Source of Water (if applicable): Not applicable

L. MONITORING PLAN – Describe below or in separate attachment a monitoring plan to be used to determine
if violations of groundwater quality standards specified in Subchapter 02L result from the injection activity.

ATC will sample selected monitoring wells, approximately two to three weeks after the Air Sparge event. The
water samples will be analyzed by SM 6200B. Dissolved oxygen in the injection wells (and wells MW-3 and
MW-10) will be measured prior to and following injection.

M. SIGNATURE OF APPLICANT AND PROPERTY OWNER

Well Owner/Applicant: “I hereby certify, under penalty of law, that I am familiar with the information
submitted in this document and all attachments thereto and that, based on my inquiry of those individuals
immediately responsible for obtaining said information, I believe that the information is true, accurate and
complete. I am aware that there are significant penalties, including the possibility of fines and imprisonment,
for submitting false information. I agree to construct, operate, maintain, repair, and if applicable, abandon the
injection well and all related appurtenances in accordance with the 15A NCAC 02C 0200 Rules.”

Al Quarles, Senior Project Manager
Signature of Applicant Print or Type Full Name and Title
Property Owner (if the property is not owned by the Well Owner/Applicant):
“As owner of the property on which the injection well(s) are to be constructed and operated, I hereby consent to
allow the applicant to construct each injection well as outlined in this application and agree that it shall be the
responsibility of the applicant to ensure that the injection well(s) conform to the Well Construction Standards
(15A NCAC 02C .0200).”

“Owner” means any person who holds the fee or other property rights in the well being constructed. A well
is real property and its construction on land shall be deemed to vest ownership in the land owner, in the
absence of contrary agreement in writing.

See signed access agreement Cory Albright
Signature* of Property Owner (if different from applicant) Print or Type Full Name and Title
*An access agreement between the applicant and property owner may be submitted in lieu of a signature on this form.

Please send 1 (one) hard color copy of this NOI along with a copy on an attached CD or Flash Drive at least
two (2) weeks prior to injection to:

DWR – UIC Program
1636 Mail Service Center
Raleigh, NC 27699-1636
Telephone: [phone]
1
Al Quarles
From:Smith, Eric G <[e-mail]>
Sent:Wednesday, April 12, 2023 10:00 AM
To:Al Quarles
Cc:Ryals, Scott; Snider, Lon; Rogers, Michael
Subject:[EXTERNAL] WI0400593 UIC NOI for TF#44919, Crossroads Center-C in Lexington, NC
[External Email] This email originated from outside of the Atlas mail system. Please use caution when
opening attachments.

Greetings-

This is to acknowledge receipt of the NOI for conducting groundwater injection remediation at the TF#44919,
Crossroads Center-C located at 134 Arnold Road, Lexington, Davidson County, NC 27295. The permit NOI
tracking number for this project is WI0400593. Please use this number on reporting forms mentioned below,
any future correspondence, and in subject line of all emails.

 Please submit copies of Well Construction (GW-1) and Well Abandonment (GW-30) records (if not
already submitted), and Injection Event Records (IERs) within 30 days after each activity. A link to
forms is below. GW-1 well records can now be completed on-line.

 NOTE: DPT/GeoProbe® injection points are considered wells. If construction is generally the same
for each point, only one GW-1/GW-30 is required. Indicate total number in Comments/Remarks
section.

https://deq.nc.gov/about/divisions/water-resources/groundwater-resources/underground-injection-
control-wells-uic-program

Regards,

Eric G. Smith

______________________________________________
Eric G. Smith
Environmental Program Consultant, Division of Water Resources
North Carolina Department of Environmental Quality
Office: [phone]
[e-mail]

Even though I am teleworking exclusively, you can still use my office phone number to reach me.

APPENDIX C
MMPE/AS REPORT

ADVANCED
ENVIRONMENTAL SERVICES, INC.
“Your Environmental Solutions Partner”

MOBILE
MULTI-PHASE
EXTRACTION REPORT

Site Location:

Crossroads Center C
134 Arnold Road
Lexington, North Carolina

Prepared for:

ATC Group Services
7606 Whiteville Executive Center Drive, Suite 800
Charlotte, North Carolina 28273
PM – Mr. Al Quarles, PG

June 8, 2023

TABLE OF CONTENTS

EVENT SUMMARY

MMPE FIELD LOG

MASS-REMOVAL CALCULATION

FIELD NOTES

DISPOSAL MANIFEST

MOBILE MULTI-PHASE EXTRACTION
EVENT SUMMARY

June 8, 2023

Location: Crossroads Center C
134 Arnold Road
Lexington, North Carolina

Client: ATC Group Services
7606 Whiteville Executive Center Drive, Suite 800
Charlotte, North Carolina 28273

Event Dates: May 22 - 26, 2023
Advanced Job # 05 – 2330

Advanced Personnel: Lee Heilig, Chad Widner and Gary McDaniel

MMPE System: MMPE system rated 25”hg at 300 CFM
4’ discharge stack - 6” diameter
6,000 - gallon tanker
Approximately 160’of 1.5” hose to 2 wells

Extraction Well: MW-3, MW-10 & Ozone injection MW-1 and VEW-1

Well Initial FP/WL(ft) Final FP/WL(ft) Stinger depth(ft) Run Time
MW-3 8.06 8.75 n/a 1 inch well 96.0 hours
MW-10 8.78 12.60 10 96.0 hours
MW-1 9.09 12.14 N/A 46.5 hours
VEW-1 9.10 13.93 N/A 46.5 hours

Description of Event:
The MMPE event ran from 11:50 May 22, through 11:50 May 26, 2023. The MMPE system was
active for 96.0 hours. During the event vacuum at the recovery pump ranged from 22.0 to 23.0
inches of mercury (hg) and stabilized at approximately 22.0 inches of mercury. Airflow rates
ranged from 900 to 1,000 feet per minute and stabilized at 1,000 feet per minute. Flow was
reduced approximately 50 percent due to excessive water recovery rate. System temperature
ranged from 90.0 – 136.0 degrees (F) and humidity decreased from 99.0 to 50.0 percent. Field
gauged volatile organic compounds (VOC’s) decreased from 15,000 parts per-million (PPM) to
1,800 (PPM) throughout the event.

Groundwater / Product Mix Recovered:
During the event, a total of 4,505 gallons of product/water mix were removed from the site and
properly disposed at a certified North Carolina disposal facility. No measurable free product
was observed in tanker. Total fluids recovered, was measured based on stick readings conducted
during and following the event. Based on 96.0 hours of operation and a total of 4,505 gallons
recovered, the average groundwater recovery rate was calculated to be approximately 46.93
gallons per hour.

Events Results:
Based on mass-removal calculations 260.61 pounds or 42.36 gallons of VOC’s were removed as
vapor. Using Dwyer Magnehelic gauges, vacuum influence (inches of water) was measured at
monitoring points MW-4 and MW-12. Drawdown was observed in MW-4 and MW-12 at 0.62
and 0.59 feet respectfully. No measurable vacuum influence was observed in any monitoring
point. Following the event, no free product was identified in any well.

MMPE FIELD LOG:
CLIENT: ATC Group Services
JOB NAME: Crossroads Center C
LOCATION: Lexington, NC
MMPE EVENT DATES: May 22, - 26, 2023
EXTRACTION POINTS: MW-10, MW-3 & Ozone injection MW-1 and VEW-1
AES JOB NUMBER: 05 - 2330
DATE TIME FLOW (f/m) HUM.(%) TEMP. (F)VOC's(ppm)VAC. (hg")GALLONS STINGER/WL's EXTRACTION POINTS (hg")
MW-3 MW-10
Stinger(ft)n/a 10
Start 11:50 Initial WL's 8.06 8.78
05/22/23 12:00 900 99.0 90 15,000 23.0 22.0 21.0
13:00 940 89.0 126 10,500 23.0 20.0 20.0
14:00 900 80.0 128 10,000 23.0 21.0 20.0
15:30 1,000 74.0 128 10,000 22.0 315 gal.18.0 10.0
05/23/23 8:00 1,000 60.0 134 8,400 22.0 1,101 gal.13.0 10.0
9:00 1,000 63.0 132 8,000 22.0 13.0 10.0
10:15 1,000 60.0 134 8,200 22.0 13.0 10.0
11:45 1,000 62.0 136 8,000 22.0 13.0 10.0
05/24/23 7:45 1,000 59.0 134 7,200 22.0 2,205 gal.13.0 10.0
8:45 1,000 61.0 134 6,800 22.0 13.0 10.0
10:00 1,000 58.0 136 6,400 22.0 13.0 10.0
12:15 1,000 54.0 134 6,000 22.0 13.0 10.0
05/25/23 7:40 1,000 60.0 134 4,200 22.0 3,107 gal.13.0 10.0
8:40 1,000 57.0 136 4,000 22.0 13.0 10.0
10:00 1,000 53.0 134 3,600 22.0 13.0 10.0
12:20 1,000 50.0 136 3,400 22.0 13.0 10.0
05/26/23 8:00 900 52.0 134 2,200 23.0 4,177 gal.21.0 20.0
10:30 900 50.0 132 1,800 23.0 21.0 20.0
Final WL's 8.75 12.60
End 11:50 Total fluids: 4,505 gal.
Total free product:0
DATE TIME STINGER/WL's OZONE INJECTION POINTS VACUUM INFLUENCE (h2o") WELL GAUGING (ft)
MW-1 VEW-1 MW-4 MW-12 MW-4 MW-12
Start 11:50 Stinger(ft)n/a n/a
Initial WL's 9.09 9.10 8.63 8.23
flow (f/m) flow (f/m)
05/22/23 13:00 4700 4700
14:00 4500 4500 n/a 0.00
15:30 4500 4500
05/23/23 8:00 4500 4500
9:00 4600 4600
10:15 4500 4500 n/a 0.00 n/a 8.77
11:30 4500 4500
05/24/23 7:45 4500 4500
8:45 4500 4500
10:00 4500 4500 n/a 0.00 9.11 8.84
12:15 4500 4500
05/25/23 7:40 4500 4500
8:40 4500 4500
10:00 4500 4500 n/a 0.00 9.13 8.74
12:20 4500 4500
05/26/23 8:00 4500 4500
10:30 4500 4500 n/a 0.00 9.25 8.82
Final WL's 12.14 13.93
End 11:50
Page 1 of 1
MOBILE MULTI-PHASE EXTRACTION EVENT
SITE NAME: CROSSROADS CENTER C CLIENT: ATC GROUP SERVICES
INCIDENT NUMBER:
AVERAGE DEPTH TO GROUNDWATER: 8 - 10 ft.
DESCRIBE SOIL IN THE SATURATED ZONE:
AVERAGE HYDRAULIC CONDUCTIVITY (if known):
EXTRACTION WELLS USED FOR MMPE: MW-3, MW-10 OZONE INJECTION MW-1 AND VEW-1
SPECIFICATIONS OF THE MMPE SYSTEM (cfm @ in Hg): 300 cfm @ 25.0"Hg
DRY STANDARD CUBIC FEET PER MINUTE (DSCFM) AIR FLOW CALCULATIONS (Qstd)
Date Hours Vacuum Velocity Pipe ID Temp Rel Humid Water Water Qstd(inches of Hg) (ft/min) (in) (°F) (%) Vapor (Wt%) Vapor (Vol%) (flow)
5/22/23 24.00 23.00 935.00 6 118 85.0 0.071 0.102 151
5/23/23 48.00 22.00 1000.00 6 134 61.0 0.048 0.071 162
5/24/23 72.00 22.00 1000.00 6 135 58.0 0.047 0.070 162
5/25/23 96.00 22.00 967.00 6 134 54.0 0.045 0.067 157
5/26/23
NOTES
Qstd = Flow at DSCFM
Vacuum = The level of vacuum being applied should be recorded from the MMPE system (inches of Hg)
Velocity = The rate at which air flows is measured at the blower discharge piping (anemometer or pitot tube)
Pipe ID = The inside diameter of the blower discharge piping (from the MMPE system)
Temperature = The temperature of the air stream exiting the blower discharge piping (dry bulb temp., in deg.°F)
Relative humidity = The % relative humidity of the air stream exiting the blower discharge piping
Bwsw = water vapor % by weight, i.e., pounds of water per pound of dry air, derived from the Psychrometric chart (temp Vs relative humidity)
Bws = water vapor % by volume
EQUATIONS
Bws = (Bwsw/18 lb-mole H20)/[(1/28.84 lb-mole dry air) + (Bwsw/18 lb-mole H2O)]
Qstd = (1-Water Vapor) * velocity * (PI * (diameter/24)2) * (528°R/(Temp + 460))
EMISSION CALCULATIONS
Elapsed
Time Flow PPMmeasured PPMwet PPMdry K PPMconc Cc:m Cc PMRc PMRg PMR
(hour) (DSCFM) (ppm)(#C - gas)(mg/dsm3) (lb/dscf) (lb/hour) (lb/hour) (lb)
24 151 11375 11375 12669 1 12669 6321 0.000394641 3.57 4.13 99.03
48 162 8150 8150 8777 1 8777 4379 0.000273398 2.66 3.08 73.84
72 162 6600 6600 7097 1 7097 3541 0.000221073 2.15 2.49 59.70
96 157 3200 3200 3431 1 3431 1712 0.000106867 1.01 1.17 28.04
Total emissions in pounds 260.61
Total emissions as gallons (pounds / 6.152)42.36
NOTES
PPMmeasured = Actual measurements (ppm) taken with a OVA or TVA at the blower discharge piping
PPMwet = "wet" concentration
PPMdry = "dry" concentration
K = Number of carbons in calibration gas: (Methane K = 1, or Propane K = 3, or Hexane K = 6)
PPMc= PPMv, Volumetric concentration of VOC emissions as carbon, dry basis at STP
Cc:m = mg/dsm3, mass concentration of VOC emissions as carbon
Mc = 12.01 mg/mg-mole, molecular weight of carbon
K3 = 24.07 dsm3/106 mg-mole, mass to volume conversion factor at STP
Cc = lb/dcsf, mass concentration of VOC emissions as carbon, dry basis at STP
PMRc = lb/hr, pollutant mass removal rate of VOC's as carbon
PMRg = lb/hr, pollutant mass removal rate of of VOC's as gasoline
PMR = lb, pollutant mass removal of VOC's as gasoline
EQUATIONS
PPMwet = PPMmeasuredPPMdry = (PPMwet)/(1-Bws)
PPMc = (PPMd)(K)
Cc:m = (PPMc)(Mc / K3)
Cc = (Cc:m)(62.43x10-9 lb-m3/mg-ft3)
PMRc = (Cc)(Qstd)(60 minute/hour)
PMRg = (PMRc)(Mg/Mcg)
PMR = (PMRg)(#hours)

APPENDIX E
LABORATORY REPORT

#=CL#
June 16, 2023
LIMS USE: FR - AL QUARLES
LIMS OBJECT ID: 92672211
92672211
Project:
Pace Project No.:
RE:
Al Quarles
ATC Group Services LLC
7606 Whitehall Executive Cente
Suite 800
Charlotte, NC 28273
SLC4491902, CROSSROA CENTER-C
Dear Al Quarles:
Enclosed are the analytical results for sample(s) received by the laboratory on June 13, 2023. The results relate only to the
samples included in this report. Results reported herein conform to the applicable TNI/NELAC Standards and the
laboratory's Quality Manual, where applicable, unless otherwise noted in the body of the report.
The test results provided in this final report were generated by each of the following laboratories within the Pace Network:
• Pace Analytical Services - Charlotte
If you have any questions concerning this report, please feel free to contact me.
Sincerely,
Taylor M Cannon
[e-mail]
Project Manager
[phone]
Enclosures
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 1 of 22
#=CP#
CERTIFICATIONS
Pace Project No.:
Project:
92672211
SLC4491902, CROSSROA CENTER-C
Pace Analytical Services Charlotte
South Carolina Laboratory ID: 99006
9800 Kincey Ave. Ste 100, Huntersville, NC 28078
North Carolina Drinking Water Certification #: 37706
North Carolina Field Services Certification #: 5342
North Carolina Wastewater Certification #: 12
South Carolina Laboratory ID: 99006
South Carolina Certification #: 99006001
South Carolina Drinking Water Cert. #: 99006003
Florida/NELAP Certification #: E87627
Kentucky UST Certification #: 84
Louisiana DoH Drinking Water #: LA029
Virginia/VELAP Certification #: 460221
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 2 of 22
#=SS#
SAMPLE SUMMARY
Pace Project No.:
Project:
92672211
SLC4491902, CROSSROA CENTER-C
Lab ID Sample ID Matrix Date Collected Date Received
92672211001 MW-1 Water 06/13/23 14:20 06/13/23 16:13
92672211002 MW-3 Water 06/13/23 14:55 06/13/23 16:13
92672211003 MW-10 Water 06/13/23 13:10 06/13/23 16:13
92672211004 FB-1 Water 06/13/23 14:30 06/13/23 16:13
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 3 of 22
#=SA#
SAMPLE ANALYTE COUNT
Pace Project No.:
Project:
92672211
SLC4491902, CROSSROA CENTER-C
Lab ID Sample ID Method
Analytes
Reported LaboratoryAnalysts
92672211001 MW-1 SM 6200B 70 PASI-CSAS
92672211002 MW-3 SM 6200B 70 PASI-CSAS
92672211003 MW-10 SM 6200B 70 PASI-CSAS
92672211004 FB-1 SM 6200B 70 PASI-CSAS
PASI-C = Pace Analytical Services - Charlotte
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 4 of 22
#=AR#
ANALYTICAL RESULTS
Pace Project No.:
Project:
92672211
SLC4491902, CROSSROA CENTER-C
Sample: MW-1 Lab ID: 92672211001 Collected: 06/13/23 14:20 Received: 06/13/23 16:13 Matrix: Water
Parameters Results Units DF Prepared Analyzed CAS No. QualMDLPQL
Analytical Method: SM 6200B
Pace Analytical Services - Charlotte
6200B MSV
tert-Amyl Alcohol <728 ug/L 06/15/23 19:40 75-85-42000 728 20
tert-Amylmethyl ether <185 ug/L 06/15/23 19:40 994-05-8200 185 20
Benzene 793 ug/L 06/15/23 19:40 71-43-210.0 6.9 20
Bromobenzene <5.8 ug/L 06/15/23 19:40 108-86-110.0 5.8 20
Bromochloromethane <9.4 ug/L 06/15/23 19:40 74-97-510.0 9.4 20
Bromodichloromethane <6.1 ug/L 06/15/23 19:40 75-27-410.0 6.1 20
Bromoform <6.8 ug/L 06/15/23 19:40 75-25-210.0 6.8 20
Bromomethane <33.2 ug/L 06/15/23 19:40 74-83-9100 33.2 20
tert-Butyl Alcohol <536 ug/L 06/15/23 19:40 75-65-01000 536 20
n-Butylbenzene 14.3 ug/L 06/15/23 19:40 104-51-810.0 9.8 20
sec-Butylbenzene <8.0 ug/L 06/15/23 19:40 135-98-810.0 8.0 20
tert-Butylbenzene <6.5 ug/L 06/15/23 19:40 98-06-610.0 6.5 20
tert-Butyl Formate <588 ug/L 06/15/23 19:40 762-75-41000 588 20
Carbon tetrachloride <6.7 ug/L 06/15/23 19:40 56-23-510.0 6.7 20
Chlorobenzene <5.7 ug/L 06/15/23 19:40 108-90-710.0 5.7 20
Chloroethane <13.0 ug/L 06/15/23 19:40 75-00-320.0 13.0 20
Chloroform <8.6 ug/L 06/15/23 19:40 67-66-310.0 8.6 20
Chloromethane <10.8 ug/L 06/15/23 19:40 74-87-320.0 10.8 20
2-Chlorotoluene <6.4 ug/L 06/15/23 19:40 95-49-810.0 6.4 20
4-Chlorotoluene <6.5 ug/L 06/15/23 19:40 106-43-410.0 6.5 20
1,2-Dibromo-3-chloropropane <6.8 ug/L 06/15/23 19:40 96-12-820.0 6.8 20
Dibromochloromethane <7.2 ug/L 06/15/23 19:40 124-48-110.0 7.2 20
1,2-Dibromoethane (EDB)<5.4 ug/L 06/15/23 19:40 106-93-410.0 5.4 20
Dibromomethane <7.9 ug/L 06/15/23 19:40 74-95-310.0 7.9 20
1,2-Dichlorobenzene <6.8 ug/L 06/15/23 19:40 95-50-110.0 6.8 20
1,3-Dichlorobenzene <6.8 ug/L 06/15/23 19:40 541-73-110.0 6.8 20
1,4-Dichlorobenzene <6.7 ug/L 06/15/23 19:40 106-46-710.0 6.7 20
Dichlorodifluoromethane <6.9 ug/L 06/15/23 19:40 75-71-8 IH10.0 6.9 20
1,1-Dichloroethane <7.3 ug/L 06/15/23 19:40 75-34-310.0 7.3 20
1,2-Dichloroethane <6.4 ug/L 06/15/23 19:40 107-06-210.0 6.4 20
1,1-Dichloroethene <7.0 ug/L 06/15/23 19:40 75-35-410.0 7.0 20
cis-1,2-Dichloroethene <7.7 ug/L 06/15/23 19:40 156-59-210.0 7.7 20
trans-1,2-Dichloroethene <7.9 ug/L 06/15/23 19:40 156-60-510.0 7.9 20
1,2-Dichloropropane <7.1 ug/L 06/15/23 19:40 78-87-510.0 7.1 20
1,3-Dichloropropane <5.7 ug/L 06/15/23 19:40 142-28-910.0 5.7 20
2,2-Dichloropropane <7.8 ug/L 06/15/23 19:40 594-20-710.0 7.8 20
1,1-Dichloropropene <8.5 ug/L 06/15/23 19:40 563-58-610.0 8.5 20
cis-1,3-Dichloropropene <7.3 ug/L 06/15/23 19:40 10061-01-510.0 7.3 20
trans-1,3-Dichloropropene <7.3 ug/L 06/15/23 19:40 10061-02-610.0 7.3 20
Diisopropyl ether <6.2 ug/L 06/15/23 19:40 108-20-310.0 6.2 20
Ethanol <1440 ug/L 06/15/23 19:40 64-17-54000 1440 20
Ethylbenzene 1560 ug/L 06/15/23 19:40 100-41-410.0 6.1 20
Ethyl-tert-butyl ether <64.8 ug/L 06/15/23 19:40 637-92-3200 64.8 20
Hexachloro-1,3-butadiene <30.6 ug/L 06/15/23 19:40 87-68-340.0 30.6 20
Isopropylbenzene (Cumene)56.7 ug/L 06/15/23 19:40 98-82-810.0 6.7 20
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 06/16/2023 01:39 PM
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 5 of 22
#=AR#
ANALYTICAL RESULTS
Pace Project No.:
Project:
92672211
SLC4491902, CROSSROA CENTER-C
Sample: MW-1 Lab ID: 92672211001 Collected: 06/13/23 14:20 Received: 06/13/23 16:13 Matrix: Water
Parameters Results Units DF Prepared Analyzed CAS No. QualMDLPQL
Analytical Method: SM 6200B
Pace Analytical Services - Charlotte
6200B MSV
Methylene Chloride <39.0 ug/L 06/15/23 19:40 75-09-240.0 39.0 20
Methyl-tert-butyl ether <8.4 ug/L 06/15/23 19:40 1634-04-410.0 8.4 20
Naphthalene 343 ug/L 06/15/23 19:40 91-20-340.0 12.9 20
n-Propylbenzene 114 ug/L 06/15/23 19:40 103-65-110.0 6.8 20
Styrene <5.8 ug/L 06/15/23 19:40 100-42-510.0 5.8 20
1,1,1,2-Tetrachloroethane <6.2 ug/L 06/15/23 19:40 630-20-610.0 6.2 20
1,1,2,2-Tetrachloroethane <4.5 ug/L 06/15/23 19:40 79-34-510.0 4.5 20
Tetrachloroethene <5.8 ug/L 06/15/23 19:40 127-18-410.0 5.8 20
Toluene 1290 ug/L 06/15/23 19:40 108-88-310.0 4.8 20
1,2,3-Trichlorobenzene <16.1 ug/L 06/15/23 19:40 87-61-640.0 16.1 20
1,2,4-Trichlorobenzene <12.8 ug/L 06/15/23 19:40 120-82-140.0 12.8 20
1,1,1-Trichloroethane <6.6 ug/L 06/15/23 19:40 71-55-610.0 6.6 20
1,1,2-Trichloroethane <6.5 ug/L 06/15/23 19:40 79-00-510.0 6.5 20
Trichloroethene <7.7 ug/L 06/15/23 19:40 79-01-610.0 7.7 20
Trichlorofluoromethane <6.0 ug/L 06/15/23 19:40 75-69-420.0 6.0 20
1,2,3-Trichloropropane <5.2 ug/L 06/15/23 19:40 96-18-410.0 5.2 20
1,2,4-Trimethylbenzene 930 ug/L 06/15/23 19:40 95-63-610.0 9.9 20
1,3,5-Trimethylbenzene 239 ug/L 06/15/23 19:40 108-67-810.0 6.6 20
Vinyl chloride <7.7 ug/L 06/15/23 19:40 75-01-420.0 7.7 20
Xylene (Total)4140 ug/L 06/15/23 19:40 1330-20-720.0 6.8 20
m&p-Xylene 3850 ug/L 06/15/23 19:40 179601-23-120.0 14.2 20
o-Xylene 292 ug/L 06/15/23 19:40 95-47-610.0 6.8 20
Surrogates
1,2-Dichloroethane-d4 (S)93 %06/15/23 19:40 17060-07-070-130 20
4-Bromofluorobenzene (S)97 %06/15/23 19:40 460-00-470-130 20
Toluene-d8 (S)98 %06/15/23 19:40 2037-26-570-130 20
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 06/16/2023 01:39 PM
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 6 of 22
#=AR#
ANALYTICAL RESULTS
Pace Project No.:
Project:
92672211
SLC4491902, CROSSROA CENTER-C
Sample: MW-3 Lab ID: 92672211002 Collected: 06/13/23 14:55 Received: 06/13/23 16:13 Matrix: Water
Parameters Results Units DF Prepared Analyzed CAS No. QualMDLPQL
Analytical Method: SM 6200B
Pace Analytical Services - Charlotte
6200B MSV
tert-Amyl Alcohol <728 ug/L 06/15/23 19:58 75-85-42000 728 20
tert-Amylmethyl ether <185 ug/L 06/15/23 19:58 994-05-8200 185 20
Benzene 2220 ug/L 06/15/23 19:58 71-43-210.0 6.9 20
Bromobenzene <5.8 ug/L 06/15/23 19:58 108-86-110.0 5.8 20
Bromochloromethane <9.4 ug/L 06/15/23 19:58 74-97-510.0 9.4 20
Bromodichloromethane <6.1 ug/L 06/15/23 19:58 75-27-410.0 6.1 20
Bromoform <6.8 ug/L 06/15/23 19:58 75-25-210.0 6.8 20
Bromomethane <33.2 ug/L 06/15/23 19:58 74-83-9100 33.2 20
tert-Butyl Alcohol <536 ug/L 06/15/23 19:58 75-65-01000 536 20
n-Butylbenzene <9.8 ug/L 06/15/23 19:58 104-51-810.0 9.8 20
sec-Butylbenzene <8.0 ug/L 06/15/23 19:58 135-98-810.0 8.0 20
tert-Butylbenzene <6.5 ug/L 06/15/23 19:58 98-06-610.0 6.5 20
tert-Butyl Formate <588 ug/L 06/15/23 19:58 762-75-41000 588 20
Carbon tetrachloride <6.7 ug/L 06/15/23 19:58 56-23-510.0 6.7 20
Chlorobenzene <5.7 ug/L 06/15/23 19:58 108-90-710.0 5.7 20
Chloroethane <13.0 ug/L 06/15/23 19:58 75-00-320.0 13.0 20
Chloroform <8.6 ug/L 06/15/23 19:58 67-66-310.0 8.6 20
Chloromethane <10.8 ug/L 06/15/23 19:58 74-87-320.0 10.8 20
2-Chlorotoluene <6.4 ug/L 06/15/23 19:58 95-49-810.0 6.4 20
4-Chlorotoluene <6.5 ug/L 06/15/23 19:58 106-43-410.0 6.5 20
1,2-Dibromo-3-chloropropane <6.8 ug/L 06/15/23 19:58 96-12-820.0 6.8 20
Dibromochloromethane <7.2 ug/L 06/15/23 19:58 124-48-110.0 7.2 20
1,2-Dibromoethane (EDB)<5.4 ug/L 06/15/23 19:58 106-93-410.0 5.4 20
Dibromomethane <7.9 ug/L 06/15/23 19:58 74-95-310.0 7.9 20
1,2-Dichlorobenzene <6.8 ug/L 06/15/23 19:58 95-50-110.0 6.8 20
1,3-Dichlorobenzene <6.8 ug/L 06/15/23 19:58 541-73-110.0 6.8 20
1,4-Dichlorobenzene <6.7 ug/L 06/15/23 19:58 106-46-710.0 6.7 20
Dichlorodifluoromethane <6.9 ug/L 06/15/23 19:58 75-71-8 IH10.0 6.9 20
1,1-Dichloroethane <7.3 ug/L 06/15/23 19:58 75-34-310.0 7.3 20
1,2-Dichloroethane <6.4 ug/L 06/15/23 19:58 107-06-210.0 6.4 20
1,1-Dichloroethene <7.0 ug/L 06/15/23 19:58 75-35-410.0 7.0 20
cis-1,2-Dichloroethene <7.7 ug/L 06/15/23 19:58 156-59-210.0 7.7 20
trans-1,2-Dichloroethene <7.9 ug/L 06/15/23 19:58 156-60-510.0 7.9 20
1,2-Dichloropropane <7.1 ug/L 06/15/23 19:58 78-87-510.0 7.1 20
1,3-Dichloropropane <5.7 ug/L 06/15/23 19:58 142-28-910.0 5.7 20
2,2-Dichloropropane <7.8 ug/L 06/15/23 19:58 594-20-710.0 7.8 20
1,1-Dichloropropene <8.5 ug/L 06/15/23 19:58 563-58-610.0 8.5 20
cis-1,3-Dichloropropene <7.3 ug/L 06/15/23 19:58 10061-01-510.0 7.3 20
trans-1,3-Dichloropropene <7.3 ug/L 06/15/23 19:58 10061-02-610.0 7.3 20
Diisopropyl ether 30.9 ug/L 06/15/23 19:58 108-20-310.0 6.2 20
Ethanol <1440 ug/L 06/15/23 19:58 64-17-54000 1440 20
Ethylbenzene 359 ug/L 06/15/23 19:58 100-41-410.0 6.1 20
Ethyl-tert-butyl ether <64.8 ug/L 06/15/23 19:58 637-92-3200 64.8 20
Hexachloro-1,3-butadiene <30.6 ug/L 06/15/23 19:58 87-68-340.0 30.6 20
Isopropylbenzene (Cumene)31.4 ug/L 06/15/23 19:58 98-82-810.0 6.7 20
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 06/16/2023 01:39 PM
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 7 of 22
#=AR#
ANALYTICAL RESULTS
Pace Project No.:
Project:
92672211
SLC4491902, CROSSROA CENTER-C
Sample: MW-3 Lab ID: 92672211002 Collected: 06/13/23 14:55 Received: 06/13/23 16:13 Matrix: Water
Parameters Results Units DF Prepared Analyzed CAS No. QualMDLPQL
Analytical Method: SM 6200B
Pace Analytical Services - Charlotte
6200B MSV
Methylene Chloride <39.0 ug/L 06/15/23 19:58 75-09-240.0 39.0 20
Methyl-tert-butyl ether <8.4 ug/L 06/15/23 19:58 1634-04-410.0 8.4 20
Naphthalene 151 ug/L 06/15/23 19:58 91-20-340.0 12.9 20
n-Propylbenzene 50.5 ug/L 06/15/23 19:58 103-65-110.0 6.8 20
Styrene <5.8 ug/L 06/15/23 19:58 100-42-510.0 5.8 20
1,1,1,2-Tetrachloroethane <6.2 ug/L 06/15/23 19:58 630-20-610.0 6.2 20
1,1,2,2-Tetrachloroethane <4.5 ug/L 06/15/23 19:58 79-34-510.0 4.5 20
Tetrachloroethene <5.8 ug/L 06/15/23 19:58 127-18-410.0 5.8 20
Toluene 51.4 ug/L 06/15/23 19:58 108-88-310.0 4.8 20
1,2,3-Trichlorobenzene <16.1 ug/L 06/15/23 19:58 87-61-640.0 16.1 20
1,2,4-Trichlorobenzene <12.8 ug/L 06/15/23 19:58 120-82-140.0 12.8 20
1,1,1-Trichloroethane <6.6 ug/L 06/15/23 19:58 71-55-610.0 6.6 20
1,1,2-Trichloroethane <6.5 ug/L 06/15/23 19:58 79-00-510.0 6.5 20
Trichloroethene <7.7 ug/L 06/15/23 19:58 79-01-610.0 7.7 20
Trichlorofluoromethane <6.0 ug/L 06/15/23 19:58 75-69-420.0 6.0 20
1,2,3-Trichloropropane <5.2 ug/L 06/15/23 19:58 96-18-410.0 5.2 20
1,2,4-Trimethylbenzene 19.6 ug/L 06/15/23 19:58 95-63-610.0 9.9 20
1,3,5-Trimethylbenzene 13.8 ug/L 06/15/23 19:58 108-67-810.0 6.6 20
Vinyl chloride <7.7 ug/L 06/15/23 19:58 75-01-420.0 7.7 20
Xylene (Total)96.3 ug/L 06/15/23 19:58 1330-20-720.0 6.8 20
m&p-Xylene 47.2 ug/L 06/15/23 19:58 179601-23-120.0 14.2 20
o-Xylene 49.1 ug/L 06/15/23 19:58 95-47-610.0 6.8 20
Surrogates
1,2-Dichloroethane-d4 (S)92 %06/15/23 19:58 17060-07-070-130 20
4-Bromofluorobenzene (S)96 %06/15/23 19:58 460-00-470-130 20
Toluene-d8 (S)96 %06/15/23 19:58 2037-26-570-130 20
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 06/16/2023 01:39 PM
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 8 of 22
#=AR#
ANALYTICAL RESULTS
Pace Project No.:
Project:
92672211
SLC4491902, CROSSROA CENTER-C
Sample: MW-10 Lab ID: 92672211003 Collected: 06/13/23 13:10 Received: 06/13/23 16:13 Matrix: Water
Parameters Results Units DF Prepared Analyzed CAS No. QualMDLPQL
Analytical Method: SM 6200B
Pace Analytical Services - Charlotte
6200B MSV
tert-Amyl Alcohol <4550 ug/L 06/15/23 20:16 75-85-412500 4550 125
tert-Amylmethyl ether <1160 ug/L 06/15/23 20:16 994-05-81250 1160 125
Benzene 5780 ug/L 06/15/23 20:16 71-43-262.5 43.1 125
Bromobenzene <36.2 ug/L 06/15/23 20:16 108-86-162.5 36.2 125
Bromochloromethane <58.5 ug/L 06/15/23 20:16 74-97-562.5 58.5 125
Bromodichloromethane <38.4 ug/L 06/15/23 20:16 75-27-462.5 38.4 125
Bromoform <42.6 ug/L 06/15/23 20:16 75-25-262.5 42.6 125
Bromomethane <208 ug/L 06/15/23 20:16 74-83-9625 208 125
tert-Butyl Alcohol <3350 ug/L 06/15/23 20:16 75-65-06250 3350 125
n-Butylbenzene <61.2 ug/L 06/15/23 20:16 104-51-862.5 61.2 125
sec-Butylbenzene <50.0 ug/L 06/15/23 20:16 135-98-862.5 50.0 125
tert-Butylbenzene <40.4 ug/L 06/15/23 20:16 98-06-662.5 40.4 125
tert-Butyl Formate <3680 ug/L 06/15/23 20:16 762-75-46250 3680 125
Carbon tetrachloride <41.6 ug/L 06/15/23 20:16 56-23-562.5 41.6 125
Chlorobenzene <35.5 ug/L 06/15/23 20:16 108-90-762.5 35.5 125
Chloroethane <81.1 ug/L 06/15/23 20:16 75-00-3125 81.1 125
Chloroform <53.8 ug/L 06/15/23 20:16 67-66-362.5 53.8 125
Chloromethane <67.5 ug/L 06/15/23 20:16 74-87-3125 67.5 125
2-Chlorotoluene <40.1 ug/L 06/15/23 20:16 95-49-862.5 40.1 125
4-Chlorotoluene <40.5 ug/L 06/15/23 20:16 106-43-462.5 40.5 125
1,2-Dibromo-3-chloropropane <42.5 ug/L 06/15/23 20:16 96-12-8125 42.5 125
Dibromochloromethane <44.9 ug/L 06/15/23 20:16 124-48-162.5 44.9 125
1,2-Dibromoethane (EDB)<34.0 ug/L 06/15/23 20:16 106-93-462.5 34.0 125
Dibromomethane <49.2 ug/L 06/15/23 20:16 74-95-362.5 49.2 125
1,2-Dichlorobenzene <42.4 ug/L 06/15/23 20:16 95-50-162.5 42.4 125
1,3-Dichlorobenzene <42.5 ug/L 06/15/23 20:16 541-73-162.5 42.5 125
1,4-Dichlorobenzene <41.6 ug/L 06/15/23 20:16 106-46-762.5 41.6 125
Dichlorodifluoromethane <43.2 ug/L 06/15/23 20:16 75-71-8 IH62.5 43.2 125
1,1-Dichloroethane <45.9 ug/L 06/15/23 20:16 75-34-362.5 45.9 125
1,2-Dichloroethane <40.2 ug/L 06/15/23 20:16 107-06-262.5 40.2 125
1,1-Dichloroethene <43.5 ug/L 06/15/23 20:16 75-35-462.5 43.5 125
cis-1,2-Dichloroethene <48.0 ug/L 06/15/23 20:16 156-59-262.5 48.0 125
trans-1,2-Dichloroethene <49.5 ug/L 06/15/23 20:16 156-60-562.5 49.5 125
1,2-Dichloropropane <44.4 ug/L 06/15/23 20:16 78-87-562.5 44.4 125
1,3-Dichloropropane <35.5 ug/L 06/15/23 20:16 142-28-962.5 35.5 125
2,2-Dichloropropane <48.5 ug/L 06/15/23 20:16 594-20-762.5 48.5 125
1,1-Dichloropropene <53.4 ug/L 06/15/23 20:16 563-58-662.5 53.4 125
cis-1,3-Dichloropropene <45.6 ug/L 06/15/23 20:16 10061-01-562.5 45.6 125
trans-1,3-Dichloropropene <45.4 ug/L 06/15/23 20:16 10061-02-662.5 45.4 125
Diisopropyl ether <38.5 ug/L 06/15/23 20:16 108-20-362.5 38.5 125
Ethanol <9020 ug/L 06/15/23 20:16 64-17-525000 9020 125
Ethylbenzene 2320 ug/L 06/15/23 20:16 100-41-462.5 38.0 125
Ethyl-tert-butyl ether <405 ug/L 06/15/23 20:16 637-92-31250 405 125
Hexachloro-1,3-butadiene <191 ug/L 06/15/23 20:16 87-68-3250 191 125
Isopropylbenzene (Cumene)97.1 ug/L 06/15/23 20:16 98-82-862.5 41.6 125
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 06/16/2023 01:39 PM
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 9 of 22
#=AR#
ANALYTICAL RESULTS
Pace Project No.:
Project:
92672211
SLC4491902, CROSSROA CENTER-C
Sample: MW-10 Lab ID: 92672211003 Collected: 06/13/23 13:10 Received: 06/13/23 16:13 Matrix: Water
Parameters Results Units DF Prepared Analyzed CAS No. QualMDLPQL
Analytical Method: SM 6200B
Pace Analytical Services - Charlotte
6200B MSV
Methylene Chloride <244 ug/L 06/15/23 20:16 75-09-2250 244 125
Methyl-tert-butyl ether <52.8 ug/L 06/15/23 20:16 1634-04-462.5 52.8 125
Naphthalene 516 ug/L 06/15/23 20:16 91-20-3250 80.6 125
n-Propylbenzene 236 ug/L 06/15/23 20:16 103-65-162.5 42.5 125
Styrene <36.5 ug/L 06/15/23 20:16 100-42-562.5 36.5 125
1,1,1,2-Tetrachloroethane <38.9 ug/L 06/15/23 20:16 630-20-662.5 38.9 125
1,1,2,2-Tetrachloroethane <28.1 ug/L 06/15/23 20:16 79-34-562.5 28.1 125
Tetrachloroethene <36.5 ug/L 06/15/23 20:16 127-18-462.5 36.5 125
Toluene 12600 ug/L 06/15/23 20:16 108-88-362.5 29.9 125
1,2,3-Trichlorobenzene <101 ug/L 06/15/23 20:16 87-61-6250 101 125
1,2,4-Trichlorobenzene <79.9 ug/L 06/15/23 20:16 120-82-1250 79.9 125
1,1,1-Trichloroethane <41.5 ug/L 06/15/23 20:16 71-55-662.5 41.5 125
1,1,2-Trichloroethane <40.6 ug/L 06/15/23 20:16 79-00-562.5 40.6 125
Trichloroethene <47.9 ug/L 06/15/23 20:16 79-01-662.5 47.9 125
Trichlorofluoromethane <37.2 ug/L 06/15/23 20:16 75-69-4125 37.2 125
1,2,3-Trichloropropane <32.6 ug/L 06/15/23 20:16 96-18-462.5 32.6 125
1,2,4-Trimethylbenzene 1340 ug/L 06/15/23 20:16 95-63-662.5 61.9 125
1,3,5-Trimethylbenzene 341 ug/L 06/15/23 20:16 108-67-862.5 41.5 125
Vinyl chloride <48.2 ug/L 06/15/23 20:16 75-01-4125 48.2 125
Xylene (Total)8020 ug/L 06/15/23 20:16 1330-20-7125 42.2 125
m&p-Xylene 6050 ug/L 06/15/23 20:16 179601-23-1125 88.6 125
o-Xylene 1970 ug/L 06/15/23 20:16 95-47-662.5 42.2 125
Surrogates
1,2-Dichloroethane-d4 (S)91 %06/15/23 20:16 17060-07-070-130 125
4-Bromofluorobenzene (S)97 %06/15/23 20:16 460-00-470-130 125
Toluene-d8 (S)98 %06/15/23 20:16 2037-26-570-130 125
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 06/16/2023 01:39 PM
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 10 of 22
#=AR#
ANALYTICAL RESULTS
Pace Project No.:
Project:
92672211
SLC4491902, CROSSROA CENTER-C
Sample: FB-1 Lab ID: 92672211004 Collected: 06/13/23 14:30 Received: 06/13/23 16:13 Matrix: Water
Parameters Results Units DF Prepared Analyzed CAS No. QualMDLPQL
Analytical Method: SM 6200B
Pace Analytical Services - Charlotte
6200B MSV
tert-Amyl Alcohol <36.4 ug/L 06/15/23 12:48 75-85-4100 36.4 1
tert-Amylmethyl ether <9.2 ug/L 06/15/23 12:48 994-05-810.0 9.2 1
Benzene <0.34 ug/L 06/15/23 12:48 71-43-20.50 0.34 1
Bromobenzene <0.29 ug/L 06/15/23 12:48 108-86-10.50 0.29 1
Bromochloromethane <0.47 ug/L 06/15/23 12:48 74-97-50.50 0.47 1
Bromodichloromethane <0.31 ug/L 06/15/23 12:48 75-27-40.50 0.31 1
Bromoform <0.34 ug/L 06/15/23 12:48 75-25-20.50 0.34 1
Bromomethane <1.7 ug/L 06/15/23 12:48 74-83-95.0 1.7 1
tert-Butyl Alcohol <26.8 ug/L 06/15/23 12:48 75-65-050.0 26.8 1
n-Butylbenzene <0.49 ug/L 06/15/23 12:48 104-51-80.50 0.49 1
sec-Butylbenzene <0.40 ug/L 06/15/23 12:48 135-98-80.50 0.40 1
tert-Butylbenzene <0.32 ug/L 06/15/23 12:48 98-06-60.50 0.32 1
tert-Butyl Formate <29.4 ug/L 06/15/23 12:48 762-75-450.0 29.4 1
Carbon tetrachloride <0.33 ug/L 06/15/23 12:48 56-23-50.50 0.33 1
Chlorobenzene <0.28 ug/L 06/15/23 12:48 108-90-70.50 0.28 1
Chloroethane <0.65 ug/L 06/15/23 12:48 75-00-31.0 0.65 1
Chloroform <0.43 ug/L 06/15/23 12:48 67-66-30.50 0.43 1
Chloromethane <0.54 ug/L 06/15/23 12:48 74-87-31.0 0.54 1
2-Chlorotoluene <0.32 ug/L 06/15/23 12:48 95-49-80.50 0.32 1
4-Chlorotoluene <0.32 ug/L 06/15/23 12:48 106-43-40.50 0.32 1
1,2-Dibromo-3-chloropropane <0.34 ug/L 06/15/23 12:48 96-12-81.0 0.34 1
Dibromochloromethane <0.36 ug/L 06/15/23 12:48 124-48-10.50 0.36 1
1,2-Dibromoethane (EDB)<0.27 ug/L 06/15/23 12:48 106-93-40.50 0.27 1
Dibromomethane <0.39 ug/L 06/15/23 12:48 74-95-30.50 0.39 1
1,2-Dichlorobenzene <0.34 ug/L 06/15/23 12:48 95-50-10.50 0.34 1
1,3-Dichlorobenzene <0.34 ug/L 06/15/23 12:48 541-73-10.50 0.34 1
1,4-Dichlorobenzene <0.33 ug/L 06/15/23 12:48 106-46-70.50 0.33 1
Dichlorodifluoromethane <0.35 ug/L 06/15/23 12:48 75-71-8 IH0.50 0.35 1
1,1-Dichloroethane <0.37 ug/L 06/15/23 12:48 75-34-30.50 0.37 1
1,2-Dichloroethane <0.32 ug/L 06/15/23 12:48 107-06-20.50 0.32 1
1,1-Dichloroethene <0.35 ug/L 06/15/23 12:48 75-35-40.50 0.35 1
cis-1,2-Dichloroethene <0.38 ug/L 06/15/23 12:48 156-59-20.50 0.38 1
trans-1,2-Dichloroethene <0.40 ug/L 06/15/23 12:48 156-60-50.50 0.40 1
1,2-Dichloropropane <0.36 ug/L 06/15/23 12:48 78-87-50.50 0.36 1
1,3-Dichloropropane <0.28 ug/L 06/15/23 12:48 142-28-90.50 0.28 1
2,2-Dichloropropane <0.39 ug/L 06/15/23 12:48 594-20-70.50 0.39 1
1,1-Dichloropropene <0.43 ug/L 06/15/23 12:48 563-58-60.50 0.43 1
cis-1,3-Dichloropropene <0.36 ug/L 06/15/23 12:48 10061-01-50.50 0.36 1
trans-1,3-Dichloropropene <0.36 ug/L 06/15/23 12:48 10061-02-60.50 0.36 1
Diisopropyl ether <0.31 ug/L 06/15/23 12:48 108-20-30.50 0.31 1
Ethanol <72.2 ug/L 06/15/23 12:48 64-17-5200 72.2 1
Ethylbenzene <0.30 ug/L 06/15/23 12:48 100-41-40.50 0.30 1
Ethyl-tert-butyl ether <3.2 ug/L 06/15/23 12:48 637-92-310.0 3.2 1
Hexachloro-1,3-butadiene <1.5 ug/L 06/15/23 12:48 87-68-32.0 1.5 1
Isopropylbenzene (Cumene)<0.33 ug/L 06/15/23 12:48 98-82-80.50 0.33 1
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 06/16/2023 01:39 PM
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 11 of 22
#=AR#
ANALYTICAL RESULTS
Pace Project No.:
Project:
92672211
SLC4491902, CROSSROA CENTER-C
Sample: FB-1 Lab ID: 92672211004 Collected: 06/13/23 14:30 Received: 06/13/23 16:13 Matrix: Water
Parameters Results Units DF Prepared Analyzed CAS No. QualMDLPQL
Analytical Method: SM 6200B
Pace Analytical Services - Charlotte
6200B MSV
Methylene Chloride 2.6 ug/L 06/15/23 12:48 75-09-2 C02.0 2.0 1
Methyl-tert-butyl ether <0.42 ug/L 06/15/23 12:48 1634-04-40.50 0.42 1
Naphthalene <0.64 ug/L 06/15/23 12:48 91-20-32.0 0.64 1
n-Propylbenzene <0.34 ug/L 06/15/23 12:48 103-65-10.50 0.34 1
Styrene <0.29 ug/L 06/15/23 12:48 100-42-50.50 0.29 1
1,1,1,2-Tetrachloroethane <0.31 ug/L 06/15/23 12:48 630-20-60.50 0.31 1
1,1,2,2-Tetrachloroethane <0.22 ug/L 06/15/23 12:48 79-34-50.50 0.22 1
Tetrachloroethene <0.29 ug/L 06/15/23 12:48 127-18-40.50 0.29 1
Toluene <0.24 ug/L 06/15/23 12:48 108-88-30.50 0.24 1
1,2,3-Trichlorobenzene <0.81 ug/L 06/15/23 12:48 87-61-62.0 0.81 1
1,2,4-Trichlorobenzene <0.64 ug/L 06/15/23 12:48 120-82-12.0 0.64 1
1,1,1-Trichloroethane <0.33 ug/L 06/15/23 12:48 71-55-60.50 0.33 1
1,1,2-Trichloroethane <0.32 ug/L 06/15/23 12:48 79-00-50.50 0.32 1
Trichloroethene <0.38 ug/L 06/15/23 12:48 79-01-60.50 0.38 1
Trichlorofluoromethane <0.30 ug/L 06/15/23 12:48 75-69-41.0 0.30 1
1,2,3-Trichloropropane <0.26 ug/L 06/15/23 12:48 96-18-40.50 0.26 1
1,2,4-Trimethylbenzene <0.50 ug/L 06/15/23 12:48 95-63-60.50 0.50 1
1,3,5-Trimethylbenzene <0.33 ug/L 06/15/23 12:48 108-67-80.50 0.33 1
Vinyl chloride <0.39 ug/L 06/15/23 12:48 75-01-41.0 0.39 1
Xylene (Total)<0.34 ug/L 06/15/23 12:48 1330-20-71.0 0.34 1
m&p-Xylene <0.71 ug/L 06/15/23 12:48 179601-23-11.0 0.71 1
o-Xylene <0.34 ug/L 06/15/23 12:48 95-47-60.50 0.34 1
Surrogates
1,2-Dichloroethane-d4 (S)96 %06/15/23 12:48 17060-07-070-130 1
4-Bromofluorobenzene (S)97 %06/15/23 12:48 460-00-470-130 1
Toluene-d8 (S)99 %06/15/23 12:48 2037-26-570-130 1
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 06/16/2023 01:39 PM
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 12 of 22
#=QC#
QUALITY CONTROL DATA
Pace Project No.:
Project:
92672211
SLC4491902, CROSSROA CENTER-C
Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result.
QC Batch:
QC Batch Method:
Analysis Method:
Analysis Description:
780789
SM 6200B
SM 6200B
6200B MSV
Laboratory:Pace Analytical Services - Charlotte
Associated Lab Samples: 92672211001, 92672211002, 92672211003, 92672211004
Parameter Units
Blank
Result
Reporting
Limit Qualifiers
METHOD BLANK: 4050388
Associated Lab Samples:92672211001, 92672211002, 92672211003, 92672211004
Matrix: Water
AnalyzedMDL
1,1,1,2-Tetrachloroethane ug/L <0.31 0.50 06/15/23 12:300.31
1,1,1-Trichloroethane ug/L <0.33 0.50 06/15/23 12:300.33
1,1,2,2-Tetrachloroethane ug/L <0.22 0.50 06/15/23 12:300.22
1,1,2-Trichloroethane ug/L <0.32 0.50 06/15/23 12:300.32
1,1-Dichloroethane ug/L <0.37 0.50 06/15/23 12:300.37
1,1-Dichloroethene ug/L <0.35 0.50 06/15/23 12:300.35
1,1-Dichloropropene ug/L <0.43 0.50 06/15/23 12:300.43
1,2,3-Trichlorobenzene ug/L <0.81 2.0 06/15/23 12:300.81
1,2,3-Trichloropropane ug/L <0.26 0.50 06/15/23 12:300.26
1,2,4-Trichlorobenzene ug/L <0.64 2.0 06/15/23 12:300.64
1,2,4-Trimethylbenzene ug/L <0.50 0.50 06/15/23 12:300.50
1,2-Dibromo-3-chloropropane ug/L <0.34 1.0 06/15/23 12:300.34
1,2-Dibromoethane (EDB)ug/L <0.27 0.50 06/15/23 12:300.27
1,2-Dichlorobenzene ug/L <0.34 0.50 06/15/23 12:300.34
1,2-Dichloroethane ug/L <0.32 0.50 06/15/23 12:300.32
1,2-Dichloropropane ug/L <0.36 0.50 06/15/23 12:300.36
1,3,5-Trimethylbenzene ug/L <0.33 0.50 06/15/23 12:300.33
1,3-Dichlorobenzene ug/L <0.34 0.50 06/15/23 12:300.34
1,3-Dichloropropane ug/L <0.28 0.50 06/15/23 12:300.28
1,4-Dichlorobenzene ug/L <0.33 0.50 06/15/23 12:300.33
2,2-Dichloropropane ug/L <0.39 0.50 06/15/23 12:300.39
2-Chlorotoluene ug/L <0.32 0.50 06/15/23 12:300.32
4-Chlorotoluene ug/L <0.32 0.50 06/15/23 12:300.32
Benzene ug/L <0.34 0.50 06/15/23 12:300.34
Bromobenzene ug/L <0.29 0.50 06/15/23 12:300.29
Bromochloromethane ug/L <0.47 0.50 06/15/23 12:300.47
Bromodichloromethane ug/L <0.31 0.50 06/15/23 12:300.31
Bromoform ug/L <0.34 0.50 06/15/23 12:300.34
Bromomethane ug/L <1.7 5.0 06/15/23 12:301.7
Carbon tetrachloride ug/L <0.33 0.50 06/15/23 12:300.33
Chlorobenzene ug/L <0.28 0.50 06/15/23 12:300.28
Chloroethane ug/L <0.65 1.0 06/15/23 12:300.65
Chloroform ug/L <0.43 0.50 06/15/23 12:300.43
Chloromethane ug/L <0.54 1.0 06/15/23 12:300.54
cis-1,2-Dichloroethene ug/L <0.38 0.50 06/15/23 12:300.38
cis-1,3-Dichloropropene ug/L <0.36 0.50 06/15/23 12:300.36
Dibromochloromethane ug/L <0.36 0.50 06/15/23 12:300.36
Dibromomethane ug/L <0.39 0.50 06/15/23 12:300.39
Dichlorodifluoromethane ug/L <0.35 0.50 IH06/15/23 12:300.35
Diisopropyl ether ug/L <0.31 0.50 06/15/23 12:300.31
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 06/16/2023 01:39 PM
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 13 of 22
#=QC#
QUALITY CONTROL DATA
Pace Project No.:
Project:
92672211
SLC4491902, CROSSROA CENTER-C
Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result.
Parameter Units
Blank
Result
Reporting
Limit Qualifiers
METHOD BLANK: 4050388
Associated Lab Samples:92672211001, 92672211002, 92672211003, 92672211004
Matrix: Water
AnalyzedMDL
Ethanol ug/L <72.2 200 06/15/23 12:3072.2
Ethyl-tert-butyl ether ug/L <3.2 10.0 06/15/23 12:303.2
Ethylbenzene ug/L <0.30 0.50 06/15/23 12:300.30
Hexachloro-1,3-butadiene ug/L <1.5 2.0 06/15/23 12:301.5
Isopropylbenzene (Cumene)ug/L <0.33 0.50 06/15/23 12:300.33
m&p-Xylene ug/L <0.71 1.0 06/15/23 12:300.71
Methyl-tert-butyl ether ug/L <0.42 0.50 06/15/23 12:300.42
Methylene Chloride ug/L <2.0 2.0 06/15/23 12:302.0
n-Butylbenzene ug/L <0.49 0.50 06/15/23 12:300.49
n-Propylbenzene ug/L <0.34 0.50 06/15/23 12:300.34
Naphthalene ug/L <0.64 2.0 06/15/23 12:300.64
o-Xylene ug/L <0.34 0.50 06/15/23 12:300.34
sec-Butylbenzene ug/L <0.40 0.50 06/15/23 12:300.40
Styrene ug/L <0.29 0.50 06/15/23 12:300.29
tert-Amyl Alcohol ug/L <36.4 100 06/15/23 12:3036.4
tert-Amylmethyl ether ug/L <9.2 10.0 06/15/23 12:309.2
tert-Butyl Alcohol ug/L <26.8 50.0 06/15/23 12:3026.8
tert-Butyl Formate ug/L <29.4 50.0 06/15/23 12:3029.4
tert-Butylbenzene ug/L <0.32 0.50 06/15/23 12:300.32
Tetrachloroethene ug/L <0.29 0.50 06/15/23 12:300.29
Toluene ug/L <0.24 0.50 06/15/23 12:300.24
trans-1,2-Dichloroethene ug/L <0.40 0.50 06/15/23 12:300.40
trans-1,3-Dichloropropene ug/L <0.36 0.50 06/15/23 12:300.36
Trichloroethene ug/L <0.38 0.50 06/15/23 12:300.38
Trichlorofluoromethane ug/L <0.30 1.0 06/15/23 12:300.30
Vinyl chloride ug/L <0.39 1.0 06/15/23 12:300.39
Xylene (Total)ug/L <0.34 1.0 06/15/23 12:300.34
1,2-Dichloroethane-d4 (S)%96 70-130 06/15/23 12:30
4-Bromofluorobenzene (S)%95 70-130 06/15/23 12:30
Toluene-d8 (S)%99 70-130 06/15/23 12:30
Parameter Units
LCS
Result
% Rec
Limits Qualifiers% RecConc.
4050389LABORATORY CONTROL SAMPLE:
LCSSpike
1,1,1,2-Tetrachloroethane ug/L 19.920 99 60-140
1,1,1-Trichloroethane ug/L 19.420 97 60-140
1,1,2,2-Tetrachloroethane ug/L 19.420 97 60-140
1,1,2-Trichloroethane ug/L 19.820 99 60-140
1,1-Dichloroethane ug/L 19.420 97 60-140
1,1-Dichloroethene ug/L 21.320 106 60-140
1,1-Dichloropropene ug/L 20.520 103 60-140
1,2,3-Trichlorobenzene ug/L 20.220 101 60-140
1,2,3-Trichloropropane ug/L 18.220 91 60-140
1,2,4-Trichlorobenzene ug/L 20.020 100 60-140
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 06/16/2023 01:39 PM
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 14 of 22
#=QC#
QUALITY CONTROL DATA
Pace Project No.:
Project:
92672211
SLC4491902, CROSSROA CENTER-C
Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result.
Parameter Units
LCS
Result
% Rec
Limits Qualifiers% RecConc.
4050389LABORATORY CONTROL SAMPLE:
LCSSpike
1,2,4-Trimethylbenzene ug/L 19.920 99 60-140
1,2-Dibromo-3-chloropropane ug/L 19.120 96 60-140
1,2-Dibromoethane (EDB)ug/L 20.020 100 60-140
1,2-Dichlorobenzene ug/L 19.620 98 60-140
1,2-Dichloroethane ug/L 19.020 95 60-140
1,2-Dichloropropane ug/L 19.920 99 60-140
1,3,5-Trimethylbenzene ug/L 19.720 98 60-140
1,3-Dichlorobenzene ug/L 19.220 96 60-140
1,3-Dichloropropane ug/L 18.820 94 60-140
1,4-Dichlorobenzene ug/L 18.920 95 60-140
2,2-Dichloropropane ug/L 19.420 97 60-140
2-Chlorotoluene ug/L 18.720 94 60-140
4-Chlorotoluene ug/L 19.520 97 60-140
Benzene ug/L 19.620 98 60-140
Bromobenzene ug/L 19.020 95 60-140
Bromochloromethane ug/L 19.520 98 60-140
Bromodichloromethane ug/L 19.320 96 60-140
Bromoform ug/L 18.820 94 60-140
Bromomethane ug/L 15.820 79 60-140
Carbon tetrachloride ug/L 20.220 101 60-140
Chlorobenzene ug/L 19.120 96 60-140
Chloroethane ug/L 19.620 98 60-140
Chloroform ug/L 18.420 92 60-140
Chloromethane ug/L 19.020 95 60-140
cis-1,2-Dichloroethene ug/L 19.420 97 60-140
cis-1,3-Dichloropropene ug/L 20.020 100 60-140
Dibromochloromethane ug/L 20.420 102 60-140
Dibromomethane ug/L 21.520 107 60-140
Dichlorodifluoromethane ug/L 24.9 IH20125 60-140
Diisopropyl ether ug/L 18.920 94 60-140
Ethanol ug/L 765800 96 60-140
Ethyl-tert-butyl ether ug/L 36.140 90 60-140
Ethylbenzene ug/L 19.020 95 60-140
Hexachloro-1,3-butadiene ug/L 20.820 104 60-140
Isopropylbenzene (Cumene)ug/L 20.020 100 60-140
m&p-Xylene ug/L 38.940 97 60-140
Methyl-tert-butyl ether ug/L 18.420 92 60-140
Methylene Chloride ug/L 18.920 95 60-140
n-Butylbenzene ug/L 20.020 100 60-140
n-Propylbenzene ug/L 18.820 94 60-140
Naphthalene ug/L 20.620 103 60-140
o-Xylene ug/L 19.920 100 60-140
sec-Butylbenzene ug/L 19.420 97 60-140
Styrene ug/L 21.020 105 60-140
tert-Amyl Alcohol ug/L 342400 86 60-140
tert-Amylmethyl ether ug/L 38.840 97 60-140
tert-Butyl Alcohol ug/L 166200 83 60-140
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 06/16/2023 01:39 PM
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 15 of 22
#=QC#
QUALITY CONTROL DATA
Pace Project No.:
Project:
92672211
SLC4491902, CROSSROA CENTER-C
Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result.
Parameter Units
LCS
Result
% Rec
Limits Qualifiers% RecConc.
4050389LABORATORY CONTROL SAMPLE:
LCSSpike
tert-Butyl Formate ug/L 143160 89 60-140
tert-Butylbenzene ug/L 15.720 79 60-140
Tetrachloroethene ug/L 19.120 95 60-140
Toluene ug/L 18.720 93 60-140
trans-1,2-Dichloroethene ug/L 20.420 102 60-140
trans-1,3-Dichloropropene ug/L 19.820 99 60-140
Trichloroethene ug/L 20.020 100 60-140
Trichlorofluoromethane ug/L 20.320 101 60-140
Vinyl chloride ug/L 17.820 89 60-140
Xylene (Total)ug/L 58.860 98 60-140
1,2-Dichloroethane-d4 (S)%95 70-130
4-Bromofluorobenzene (S)%101 70-130
Toluene-d8 (S)%98 70-130
Parameter Units
MS
Result
% Rec
Limits Qual% RecConc.
4050390MATRIX SPIKE & MATRIX SPIKE DUPLICATE:
MSSpike
Result
92671858012
4050391
MSD
Result
MSD
% Rec RPD RPD
Max
MSDMS
Spike
Conc.
1,1,1,2-Tetrachloroethane ug/L M12012560-140143 13 3020ND25.0 28.6
1,1,1-Trichloroethane ug/L M12012260-140144 17 3020ND24.3 28.7
1,1,2,2-Tetrachloroethane ug/L 20 114 60-140138 19 3020ND22.8 27.6
1,1,2-Trichloroethane ug/L 20 116 60-140137 16 3020ND23.3 27.4
1,1-Dichloroethane ug/L 20 116 60-140134 14 30201.1 24.2 27.8
1,1-Dichloroethene ug/L M12013560-140156 14 3020ND27.1 31.3
1,1-Dichloropropene ug/L M12012860-140151 16 3020ND25.6 30.2
1,2,3-Trichlorobenzene ug/L M12012460-140154 22 3020ND24.8 30.7
1,2,3-Trichloropropane ug/L 20 110 60-140129 16 3020ND22.0 25.8
1,2,4-Trichlorobenzene ug/L M12012560-140149 17 3020ND25.1 29.9
1,2,4-Trimethylbenzene ug/L M12012460-140141 12 3020ND24.9 28.2
1,2-Dibromo-3-
chloropropane ug/L M12011660-140141 20 3020ND23.1 28.2
1,2-Dibromoethane (EDB) ug/L M12012360-140142 14 3020ND24.6 28.3
1,2-Dichlorobenzene ug/L 20 120 60-140137 13 3020ND24.0 27.3
1,2-Dichloroethane ug/L 20 110 60-140131 18 3020ND21.9 26.2
1,2-Dichloropropane ug/L 20 121 60-140139 14 3020ND24.2 27.7
1,3,5-Trimethylbenzene ug/L 20 120 60-140138 13 3020ND24.1 27.5
1,3-Dichlorobenzene ug/L 20 119 60-140136 13 3020ND23.7 27.1
1,3-Dichloropropane ug/L 20 115 60-140134 15 3020ND23.1 26.9
1,4-Dichlorobenzene ug/L 20 116 60-140131 12 3020ND23.2 26.3
2,2-Dichloropropane ug/L 20 111 60-140131 17 3020ND22.2 26.3
2-Chlorotoluene ug/L 20 114 60-140130 12 3020ND22.9 25.9
4-Chlorotoluene ug/L 20 117 60-140133 13 3020ND23.4 26.7
Benzene ug/L 20 120 60-140140 15 3020ND23.9 27.9
Bromobenzene ug/L 20 117 60-140133 13 3020ND23.4 26.6
Bromochloromethane ug/L 20 115 60-140136 17 3020ND23.0 27.2
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 06/16/2023 01:39 PM
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 16 of 22
#=QC#
QUALITY CONTROL DATA
Pace Project No.:
Project:
92672211
SLC4491902, CROSSROA CENTER-C
Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result.
Parameter Units
MS
Result
% Rec
Limits Qual% RecConc.
4050390MATRIX SPIKE & MATRIX SPIKE DUPLICATE:
MSSpike
Result
92671858012
4050391
MSD
Result
MSD
% Rec RPD RPD
Max
MSDMS
Spike
Conc.
Bromodichloromethane ug/L 20 114 60-140132 14 3020ND22.9 26.4
Bromoform ug/L 20 107 60-140122 14 3020ND21.4 24.5
Bromomethane ug/L 20 83 60-140104 23 3020ND16.5 20.8
Carbon tetrachloride ug/L M12012860-140153 18 3020ND25.5 30.7
Chlorobenzene ug/L 20 118 60-140139 16 3020ND23.6 27.7
Chloroethane ug/L M12012160-140143 17 3020ND24.2 28.5
Chloroform ug/L 20 114 60-140130 13 3020ND22.9 26.1
Chloromethane ug/L 20 108 60-140131 19 3020ND21.6 26.2
cis-1,2-Dichloroethene ug/L 20 114 60-140134 16 3020ND22.9 26.8
cis-1,3-Dichloropropene ug/L 20 112 60-140134 18 3020ND22.4 26.8
Dibromochloromethane ug/L M12012260-140141 14 3020ND24.4 28.2
Dibromomethane ug/L M12013160-140152 15 3020ND26.2 30.4
Dichlorodifluoromethane ug/L IH,M12015460-140179 15 3020ND30.8 35.7
Diisopropyl ether ug/L 20 109 60-140131 18 3020ND21.7 26.1
Ethanol ug/L M180013060-140150 14 30800ND1040 1200
Ethyl-tert-butyl ether ug/L 40 106 60-140127 18 3040ND42.3 50.9
Ethylbenzene ug/L 20 118 60-140136 14 3020ND23.6 27.2
Hexachloro-1,3-butadiene ug/L M12017660-140211 18 3020ND35.2 42.3
Isopropylbenzene
(Cumene)ug/L M12012560-140146 16 3020ND25.0 29.3
m&p-Xylene ug/L 40 119 60-140138 15 3040ND47.6 55.3
Methyl-tert-butyl ether ug/L 20 107 60-140130 19 3020ND21.4 26.0
Methylene Chloride ug/L 20 106 60-140126 17 3020ND21.3 25.3
n-Butylbenzene ug/L M12013060-140150 14 3020ND26.0 30.0
n-Propylbenzene ug/L 20 115 60-140131 13 3020ND23.0 26.1
Naphthalene ug/L M12012460-140157 24 3020ND24.7 31.3
o-Xylene ug/L 20 121 60-140140 14 3020ND24.2 28.0
sec-Butylbenzene ug/L M12012560-140144 14 3020ND25.1 28.8
Styrene ug/L M12012560-140148 17 3020ND25.1 29.6
tert-Amyl Alcohol ug/L M140011660-140142 20 30400ND463 566
tert-Amylmethyl ether ug/L 40 114 60-140137 18 3040ND45.7 54.6
tert-Butyl Alcohol ug/L M120016960-140208 20 30200ND339 415
tert-Butyl Formate ug/L P5160360-1402 30160ND<29.4 <29.4
tert-Butylbenzene ug/L 20 101 60-140116 14 3020ND20.1 23.3
Tetrachloroethene ug/L 20 122 60-140140 14 3020ND24.5 28.1
Toluene ug/L 20 114 60-140131 14 30200.47J 23.2 26.8
trans-1,2-Dichloroethene ug/L M12012360-140143 15 3020ND24.6 28.7
trans-1,3-Dichloropropene ug/L 20 114 60-140134 16 3020ND22.7 26.8
Trichloroethene ug/L M12012760-140147 14 3020ND25.5 29.3
Trichlorofluoromethane ug/L M12013860-140155 12 3020ND27.7 31.1
Vinyl chloride ug/L 20 108 60-140129 18 3020ND21.7 25.9
Xylene (Total)ug/L 60 120 60-140139 15 3060ND71.8 83.2
1,2-Dichloroethane-d4 (S) %93 70-13095
4-Bromofluorobenzene (S) %100 70-130102
Toluene-d8 (S)%95 70-13095
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 06/16/2023 01:39 PM
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 17 of 22
#=QL#
QUALIFIERS
Pace Project No.:
Project:
92672211
SLC4491902, CROSSROA CENTER-C
DEFINITIONS
DF - Dilution Factor, if reported, represents the factor applied to the reported data due to dilution of the sample aliquot.
ND - Not Detected at or above adjusted reporting limit.
TNTC - Too Numerous To Count
J - Estimated concentration above the adjusted method detection limit and below the adjusted reporting limit.
MDL - Adjusted Method Detection Limit.
PQL - Practical Quantitation Limit.
RL - Reporting Limit - The lowest concentration value that meets project requirements for quantitative data with known precision and
bias for a specific analyte in a specific matrix.
S - Surrogate
1,2-Diphenylhydrazine decomposes to and cannot be separated from Azobenzene using Method 8270. The result for each analyte is
a combined concentration.
Consistent with EPA guidelines, unrounded data are displayed and have been used to calculate % recovery and RPD values.
LCS(D) - Laboratory Control Sample (Duplicate)
MS(D) - Matrix Spike (Duplicate)
DUP - Sample Duplicate
RPD - Relative Percent Difference
NC - Not Calculable.
SG - Silica Gel - Clean-Up
U - Indicates the compound was analyzed for, but not detected.
Acid preservation may not be appropriate for 2 Chloroethylvinyl ether.
A separate vial preserved to a pH of 4-5 is recommended in SW846 Chapter 4 for the analysis of Acrolein and Acrylonitrile by EPAMethod 8260.
N-Nitrosodiphenylamine decomposes and cannot be separated from Diphenylamine using Method 8270. The result reported for
each analyte is a combined concentration.
Reported results are not rounded until the final step prior to reporting. Therefore, calculated parameters that are typically reported as
"Total" may vary slightly from the sum of the reported component parameters.
Pace Analytical is TNI accredited. Contact your Pace PM for the current list of accredited analytes.
TNI - The NELAC Institute.
ANALYTE QUALIFIERS
Result confirmed by second analysis.C0
This analyte exceeded secondary source verification criteria high for the initial calibration. The reported results should be
considered an estimated value.IH
Matrix spike recovery exceeded QC limits. Batch accepted based on laboratory control sample (LCS) recovery.M1
The EPA or method required sample preservation degrades this compound, therefore acceptable recoveries may not be
achieved in sample matrix spikes.P5
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 06/16/2023 01:39 PM
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 18 of 22
#=CR#
QUALITY CONTROL DATA CROSS REFERENCE TABLE
Pace Project No.:
Project:
92672211
SLC4491902, CROSSROA CENTER-C
Lab ID Sample ID QC Batch Method QC Batch Analytical Method
Analytical
Batch
92672211001 780789MW-1 SM 6200B
92672211002 780789MW-3 SM 6200B
92672211003 780789MW-10 SM 6200B
92672211004 780789FB-1 SM 6200B
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 06/16/2023 01:39 PM
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
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