WS-5253_18068_CA_MRP_20230308

2725 E. Millbrook Road, Suite 121
Raleigh, NC 27604
Telephone [phone]
www.atcgroupservices.com

March 8, 2023

Ms. Linda Blalock
North Carolina Department of Environmental Quality
Division of Waste Management – Underground Storage Tank Section
1646 Mail Service Center
Raleigh, North Carolina 27699

Subject: Groundwater Monitoring Report
Former Auddie’s #4
4105 Old Lexington Road
Asheboro, Randolph County, North Carolina
NCDEQ Incident No. 18068

Dear Ms. Blalock:

ATC Associates of North Carolina, P.C. (ATC) is submitting the enclosed Groundwater Monitoring Report for
the former Auddie’s #4 site. The report presents investigative procedures, field activities, and laboratory
analytical results for a groundwater and water supply well sampling event conducted in January 2023.

If you have any questions or require additional information, please contact our office at [phone].

Sincerely,
ATC Associates of North Carolina, P.C.

Emily J. Fuller, P.G. Ashley M. W. Offer, P.G.
Project Manager Senior Project Manager
Direct Line: 919-573-1193 Direct Line: 919-573-1206
Email: [e-mail] Email: [e-mail]

Attachments:
1. Groundwater Monitoring Report

Prepared for:

North Carolina Department of Environmental Quality
Division of Waste Management – Underground Storage Tank Section
1646 Mail Service Center
Raleigh, North Carolina 27699

GROUNDWATER MONITORING REPORT
FORMER AUDDIE’S #4
4105 OLD LEXINGTON ROAD
ASHEBORO, RANDOLPH COUNTY, NORTH CAROLINA

ATC Project No. SLC1806802

Prepared by:

ATC Associates of North Carolina, P.C.
2725 E. Millbrook Road, Suite 121
Raleigh, North Carolina 27604
Telephone [phone]

Emily J. Fuller, P.G.
Project Manager
Direct Line: 919-573-1193
Email: [e-mail]

Ashley M. W. Offer, P.G.
Senior Project Manager
Direct Line: 919-573-1206
Email: [e-mail]

March 8, 2023

Former Auddie’s #4
March 8, 2023
Page i

ATC Project No. SLC1806802 NCDEQ State Lead Program
Table of Contents
1.0 SITE IDENTIFICATION .......................................................................................................................... 1
2.0 EXECUTIVE SUMMARY ........................................................................................................................ 2
3.0 SITE DESCRIPTION .............................................................................................................................. 2
3.1 SITE CHARACTERIZATION .................................................................................................................................... 2
3.2 SITE BACKGROUND ............................................................................................................................................ 2
4.0 GROUNDWATER ASSESSMENT ACTIVITIES .................................................................................. 4
4.1 GROUNDWATER LEVELS...................................................................................................................................... 4
4.2 GROUNDWATER QUALITY ................................................................................................................................... 4
4.3 WATER SUPPLY WELLS ....................................................................................................................................... 5
5.0 CONCLUSIONS AND RECOMMENDATIONS .................................................................................... 5

TABLES:
Table 1 – Water Supply Well Information
Table 2 – Well Construction and Groundwater Elevation Data
Table 3 – Groundwater Analytical Results
Table 4 – Historical Groundwater Analytical Results
Table 5 – Natural Attenuation Parameters
Table 6 – Historical Water Supply Well Analytical Results

FIGURES:
Figure 1 – Site Topographic Map
Figure 2 – Site Map
Figure 3 – Potential Receptor Map
Figure 4 – Groundwater Elevation Contour Map
Figure 5 – Dissolved Benzene Isoconcentration Contour Map
Figure 6 – Additional Chemicals of Concern in Groundwater

APPENDICES:
Appendix A – Site Photographs
Appendix B – Field Notes
Appendix C – Laboratory Analytical Results
Appendix D – GSI Mann-Kendall Toolkit
Former Auddie’s #4
March 8, 2023
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ATC Project No. SLC1806802 NCDEQ State Lead Program
2.0 EXECUTIVE SUMMARY

ATC Associates of North Carolina, P.C. (ATC) has completed a Groundwater Monitoring Report for the
former Auddie’s #4. This report documents groundwater and water supply well sampling activities
conducted at the site in January 2023. The activities were performed based on a December 20, 2022 Task
Authorization (TA-02) by the Trust Fund Branch of the Underground Storage Tank (UST) Section, Division
of Waste Management, North Carolina Department of Environmental Quality (NCDEQ). The work is being
performed as part of State Lead Contract #N122019A between NCDEQ and ATC.

The former Auddie’s #4 is located at 4105 Old Lexington Road in Asheboro, Randolph County, North Carolina.
The site is currently developed with a single-story building occupied by Furniture Outfixers. Eleven
monitoring wells (MW-2 through MW-6, MW-7R, MW-8, MW-9, MW-10, and VEW-1) are associated with the
site.

On January 24, 2023, ATC personnel mobilized to the site to collect groundwater samples from MW-2
through MW-6, MW-7R, MW-8 through MW-10, and VEW-1, as well as water supply well SW-1. Monitoring
well MW-6 was not located during the sampling event. Laboratory analytical results indicated the presence
of petroleum related compounds above the Title 15A NCAC 02L .0202 Groundwater Quality Standards (2L
Standards) in monitoring wells MW-2, MW-3, MW-7R, and MW-10. The Gross Contamination Level (GCL)
for benzene was exceeded in MW-2. Compounds were not detected above the laboratory reporting limits
in monitoring wells MW-4, MW-5, MW-8, and MW-9 and no compounds exceeded 2L Standards in VEW-
1. Isopropyl ether (IPE) and methyl-tert-butyl ether (MTBE) were detected in water supply well SW-1 at
concentrations below the 2L Standards.

ATC utilized GSI Mann-Kendall Toolkits for monitoring wells which have indicated 2L Standard
exceedances since 2015. Based on the results of the toolkits, it appears petroleum compounds are
generally decreasing, stable, or have no discernable statistical trend. No compounds indicate an increasing
trend.

ATC recommends performing in-situ chemical oxidation remediation activities, if funding is available, to
address the GCL impacts. In the interim, ATC recommends semi-annual monitoring of select monitoring
wells and water supply wells.

3.0 SITE DESCRIPTION

3.1 SITE CHARACTERIZATION

The former Auddie’s #4 site is located at 4105 Old Lexington Road in Asheboro, North Carolina. Currently
onsite is a one-story building occupied by Furniture Outfixers. The UST system formerly located on the
property consisted of two 4,000-gallon gasoline USTs. According to the NCDEQ UST database, the USTs
were installed on January 22, 1987, and permanently removed from the site on July 12, 1997. The site is
bound to the north by Old Lexington Road, to the east and west by residential properties, and to the south
by an undeveloped lot. Municipal water is not available to properties in the area. Fourteen potable water
supply wells are located within 1,000 feet of the site. It should be noted that the Former Country Store
(Incident # 18391) is located approximately 1,200 feet west of the former Auddie’s #4 site and as a result
share receptors. Water supply well ownership information is included in Table 1. A site topographic map
is included as Figure 1 and a site map depicting monitoring well locations and other pertinent site features
is included as Figure 2. A map showing water supply well locations is included as Figure 3. Site
photographs are included in Appendix A.

3.2 SITE BACKGROUND

On July 12, 1997, the two 4,000-gallon gasoline USTs and associated product lines and dispensers were
removed from the site. During the UST closure, eleven soil samples were collected and analyzed for total
Former Auddie’s #4
March 8, 2023
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ATC Project No. SLC1806802 NCDEQ State Lead Program
petroleum hydrocarbon (TPH) gasoline range organics (GRO). Based on the laboratory results, impacted
soil was not present in the vicinity of the UST system.
A Phase II Limited Site Assessment (LSA) was submitted on September 19, 2000. The LSA documented
a receptor survey, the installation of monitoring wells MW-1 through MW-4 and VEW-1, and soil and
groundwater sampling. The receptor survey identified 13 potable water supply wells within 1,000 feet of
the site. Soil and groundwater analytical results indicated impact to both media at concentrations exceeding
the corresponding standards.

A Comprehensive Site Assessment (CSA) was submitted on August 31, 2001. During the CSA, monitoring
wells MW-5 through MW-8 were installed and soil, groundwater, and water supply well sampling was
conducted. Petroleum hydrocarbons were detected above corresponding standards in both soil and
groundwater. Water supply well laboratory results did not indicate detections.

A Corrective Action Plan (CAP) was submitted on December 12, 2001. The CAP proposed soil excavation
activities to remediate impacted soil at the site and to allow impacted groundwater to naturally attenuate.
A Soil Cleanup Report submitted on December 17, 2003, documented a soil excavation performed at the
site in November 2003. During the excavation, approximately 487.07 tons of impacted soil were removed
from the site. Soil samples collected following the excavation indicate soil impacts above the lowest
Maximum Soil Contaminant Concentrations (MSCCs) near the onsite building. To ensure the structural
integrity of the onsite building, soil could not be excavated closer to the building. It should be noted that
monitoring well MW-1 was abandoned in November 2003 due to soil excavation activities.

A Natural Attenuation Monitoring Report was submitted on December 16, 2003, documenting a
comprehensive groundwater and water supply well sampling event at the site. During the event, it was
determined concentrations in SW-2 were not suitable for consumption; therefore, a point-of-entry treatment
system was installed and the residence was provided bottle water until 2009, when the property owner
passed away.

ATC completed a Federal/State Lead Groundwater Monitoring Report, dated August 7, 2015, documenting
an updated receptor survey and the May 2015 groundwater and water supply well sampling event.
Laboratory analytical results indicated the presence petroleum related compounds above the 2L Standards
in monitoring wells MW-2, MW-3, MW-6, and MW-7. The GCL for benzene was exceeded in monitoring
wells MW-2, MW-3, and MW-7 and the GCL for MTBE was exceeded in monitoring well MW-2. Fourteen
potable water supply wells (SW-1 through SW-13 and SW-24) were identified within 1,000 feet of the site.
Laboratory analytical results for water supply wells SW-2, SW-7, SW-8, and SW-12 did not indicate the
presence of compounds above laboratory detection limits.

ATC completed a Groundwater Monitoring Report, dated August 11, 2017, documenting the July 2017
groundwater and water supply well sampling event. Laboratory analytical results indicated the presence of
petroleum related compounds above the 2L Standards in monitoring wells MW-2, MW-3, MW-6, and VEW-
1. The GCL for benzene was exceeded in monitoring wells MW-2 and MW-3. Laboratory analytical results
for water supply well SW-7 did not indicate the presence of compounds above laboratory detection limits.

ATC completed a Federal/State Lead Letter Report, dated September 28, 2018, documenting the
installation of two monitoring wells and the August 2018 groundwater sampling event. Monitoring wells
MW-9 and MW-10 were installed on May 25, 2018 and July 26, 2018 to delineate impacts above GCLs.
Laboratory analytical results indicated the presence petroleum related compounds above the 2L Standards
in monitoring well MW-10, but none exceeded the GCLs. No compounds were detected above laboratory
detection limits in MW-9. The GCL impacts were adequately delineated following this event.

Based on the groundwater concentrations and the “High” risk classification of the site, ATC prepared a New
Technology Cleanup Plan (NTCP) in February 2019. ATC reviewed four remedial alternatives for
groundwater impacts: connection of receptors to alternative water sources, soil excavation, in-situ chemical
oxidation via ferric oxide activated sodium persulfate, and in-situ remediation via Enviro-BAC. Soil
excavation was deemed not warranted since soil impacts are below applicable MSCCs. Eliminating
Former Auddie’s #4
March 8, 2023
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ATC Project No. SLC1806802 NCDEQ State Lead Program
receptors through alternative water sources was not feasible as there is no municipal water in the area.
Based on a cost comparison between both in-situ options, ATC recommended performing in-situ chemical
oxidation.

On June 21, 2019, February 12, 2020, and June 26, 2020, ATC prepared Groundwater Monitoring Reports
documenting groundwater and water supply well sampling events. Groundwater samples were collected
from select monitoring wells and water supply wells. Laboratory analytical results indicated the presence
of petroleum related compounds above the 2L Standards in monitoring wells MW-2, MW-3, and MW-6.
The GCL for benzene was exceeded in MW-2 and MW-3. Compounds were not detected above the
laboratory reporting limits in the sampled water supply wells. ATC recommended performing in-situ
chemical oxidation. In addition, ATC recommended replacing monitoring well MW-7 as it has historically
exhibited benzene concentrations above GCL.

On January 21, 2021, ATC personnel mobilized to the site to supervise the installation of replacement
monitoring well MW-7R. On January 27, 2021, ATC personnel mobilized to the site to collect groundwater
samples from MW-7R and water supply wells SW-1, SW-2, SW-3, SW-4, SW-5, and SW-7. ATC was
denied permission to sample SW-2 in the field and an outside spigot for SW-5 was not located. Permission
to sample water supply wells SW-3 and SW-4 was not granted prior to mobilization to the site. Laboratory
analytical results indicated the presence of petroleum related compounds above 2L Standards in monitoring
well MW-7R. None of the constituents exceeded GCLs. Compounds were not detected above the
laboratory reporting limits in water supply wells SW-1 and SW-7.

4.0 GROUNDWATER ASSESSMENT ACTIVITIES

4.1 GROUNDWATER LEVELS

On January 24, 2023, groundwater level measurements were collected from monitoring wells MW-2 through
MW-5, MW-7R, MW-8 through MW-10, and VEW-1. Monitoring well MW-6 could not be located during the
sampling event, despite the use of a metal detector. Monitoring well construction details and groundwater
elevation data are summarized in Table 2. Depth to groundwater measurements ranged from 3.34 feet
below ground surface (bgs) in MW-4 to 36.59 feet bgs in VEW-1. Groundwater flow across the site is to the
west, which is consistent with historical data. A groundwater elevation contour map is included as Figure
4. Field notes from the sampling event are included in Appendix B.

4.2 GROUNDWATER QUALITY

On January 24, 2023, groundwater samples were collected from monitoring wells MW-2 through MW-5,
MW-7R, MW-8 through MW-10, and VEW-1. The sample was collected in laboratory-approved containers,
packed in ice and delivered under chain of custody protocol to Pace Analytical (Pace) in Mount Juliet,
Tennessee for analyses. The groundwater samples were analyzed for volatile organic compounds (VOCs)
by Standard Method 6200B.

The analytical results were compared to the 2L Standards and GCLs. Benzene, toluene, ethylbenzene,
total xylenes, MTBE, IPE, naphthalene, isopropylbenzene, 1,2,4-trimethylbenzene, 1,3,5-trimethylbenzene,
and n-propylbenzene were detected above the 2L Standards. Additionally, benzene exceeded its
respective GCL in MW-2. Monitoring well analytical results are included in Table 3. Historical groundwater
analytical results are summarized in Table 4. Natural attenuation parameters are summarized in Table 5.
The laboratory analytical report and chain-of-custody forms are included in Appendix C.

An isoconcentration contour map for benzene is included as Figure 5. A map showing additional
contaminants of concern is included as Figure 6. Groundwater impacts are horizontally defined to the west
(downgradient), south (crossgradient), and east (upgradient). Impacts are also vertically delineated. ATC
utilized GSI Mann-Kendall Toolkits for monitoring wells which have indicated 2L Standard exceedances
since 2015. Based on the results of the toolkits (Appendix D), it appears petroleum compounds are
Former Auddie’s #4
March 8, 2023
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ATC Project No. SLC1806802 NCDEQ State Lead Program
generally decreasing, stable, or have no discernable statistical trend. No compounds indicate an increasing
trend.

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 concluded that samples were received by the
laboratory in acceptable condition and properly preserved. Samples were analyzed within the correct
holding times, and the chain of custody was properly completed by all parties. The laboratory QC report
shows an internal blank was analyzed for each method that was used for the original samples. The
laboratory fortified blank (LFB) and laboratory control sample (LCS) data results were also provided for
each analytical method. A field blank was analyzed which indicated acetone, 2-butanone, and methylene
chloride above laboratory reporting limits but below 2L Standards. These compounds are common
laboratory contaminants and not likely associated with the site. Refer to the laboratory report in Appendix
C for details regarding QA results for the laboratory samples and any noted exceptions. Overall, ATC
concludes that the laboratory results are usable and any exceptions do not significantly impact the
conclusions presented in this report.

4.3 WATER SUPPLY WELLS

Fourteen potable water supply wells (SW-1 through SW-13 and SW-24) are located within 1,000 feet of the
site. Table 1 presents the water supply well ownership information and Figure 3 depicts the water supply
well locations.

On January 24, 2023, ATC personnel mobilized to the site to collect a groundwater sample from onsite
water supply well SW-1. Sample SW-1 was collected in laboratory-approved containers, packed in ice and
delivered under chain-of-custody protocol to Pace for analyses. The sample was analyzed for VOCs by
Standard Method 6200B.

Laboratory analytical results did not indicate the presence of compounds above the laboratory detection
limits in the water supply well sample with the exception of MTBE and IPE, which were below 2L Standards.
Current and historical water supply well analytical data is included in Table 6. The QA and QC measures
and conditions applicable to the monitoring well sampling also apply to the water supply well sampling.

5.0 CONCLUSIONS AND RECOMMENDATIONS

On behalf of the Trust Fund Branch of the UST Section, ATC has completed a Groundwater Monitoring
Report documenting groundwater and water supply well sampling activities performed in January 2023 for
the former Auddie’s #4 site located at 4105 Old Lexington Road in Asheboro, Randolph County, North
Carolina. Laboratory analytical results indicated the presence of petroleum related compounds above 2L
Standards in monitoring wells MW-2, MW-3, MW-7R, and MW-10. Additionally, benzene exceeded its
respective GCL in MW-2. Concentrations of MTBE and IPE were detected in water supply well SW-1 at
concentrations below the 2L Standard. ATC utilized GSI Mann-Kendall Toolkits for monitoring wells which
have indicated 2L Standard exceedances since 2015. Based on the results of the toolkits, it appears
petroleum compounds are generally decreasing, stable, or have no discernable statistical trend. No
compounds indicate an increasing trend.

ATC recommends performing in-situ chemical oxidation remediation activities, if funding is available, to
address the GCL impacts. In the interim, ATC recommends semi-annual monitoring of select monitoring
wells and water supply wells.

Former Auddie’s #4

ATC Project No. SLC1806802 NCDEQ State Lead Program

TABLES

TABLE 1
WATER SUPPLY WELL INFORMATION
FORMER AUDDIE'S #4
4105 OLD LEXINGTON ROAD
ASHEBORO, RANDOLPH COUNTY, NORTH CAROLINA
INCIDENT #18068
Well ID PIN Property Owner(s)Property Address
Estimated
Distance and
Direction from
Source
Up or Down
Gradient
Connected to a
Municipal Water
Supply
Usage
SW-1
(Site)7732138189
Mona Duncan
1035 Forest Lake Drive
Asheboro, NC 27205
336-953-1330
4105 Old Lexington Road 120 Downgradient No Drinking
SW-2 7732231273
Michael and Sharon Pugh
4027 Old Lexington Road
Asheboro, NC 27205
336-257-2147
4027 Old Lexington Road 150 Downgradient No Drinking
SW-3 7732136114
Gary Underwood
343 Woodcrest Road
Asheboro, NC 27203
Phone Number Not Available
4145 Old Lexington Road 320 Crossgradient No Drinking
SW-4 7732134689
Michael Parton
4152 Old Lexington Road
Asheboro, NC 27205
Phone Number Not Available
4152 Old Lexington Road 350 Downgradient No Drinking
SW-5 7732109801
Lakewood Club, Inc.
c/o David R. Hill
PO Box 1931
Liberty, NC 27298
Phone Number Not Available
686 Spencer Meadow Road 475 Crossgradient No Drinking
SW-6 7732133062
Donald and Teresa Hill
4171 Old Lexington Road
Asheboro, NC 27205
Phone Number Not Available
4171 Old Lexington Road 550 Crossgradient No Drinking
SW-7 7732232366
Arlie and Grace McNeill
4021 Old Lexington Road
Asheboro, NC 27205
Phone Number Not Available
4021 Old Lexington Road 410 Downgradient No Drinking
SW-8 7732139915
Roberta Brown
823 Green Farm Road
Asheboro, NC 27205
Phone Number Not Available
823 Green Farm Road 675 Downgradient No Drinking
SW-9 7732122527
Rosa Garren
4201 Old Lexington Road
Asheboro, NC 27205
Phone Number Not Available
4201 Old Lexington Road 790 Crossgradient No Drinking
SW-10 7732224739
Ivy South, LLC
342 Hill Street
Asheboro, NC 27203
Phone Number Not Available
803 Jennings Centry Drive 770 Upgradient No Drinking
SW-11 7732131604 4202 Old Lexington Road 885 Crossgradient No Drinking
SW-12 7732038676 4214 Old Lexington Road 990 Crossgradient No Drinking
SW-13 7732028866
Barbara Cox
7826 Vauxhill Drive
Raleigh, NC 27615
Phone Number Not Available
4205 Old Lexington Road 660 Crossgradient No Drinking
SW-24 7732132062
Jerry Garren
4179 Old Lexington Road
Asheboro, NC 27207
Phone Number Not Available
4179 Old Lexington Road 980 Crossgradient No Drinking
John Kenyon
4202 Old Lexington Road
Asheboro, NC 27205
Phone Number Not Available
Note: Only water supply wells located within 1,000 feet of the site are included on this table.
TABLE 2
WELL CONSTRUCTION AND GROUNDWATER ELEVATION DATA
FORMER AUDDIE'S #4
4105 OLD LEXINGTON ROAD
ASHEBORO, RANDOLPH COUNTY, NORTH CAROLINA
INCIDENT #18068
Well ID Date
Installed
Screened
Interval (ft.
bgs)
Depth of
Well (ft.
bgs)
TOC
Elev. (ft.)
Date
Measured
Depth to
LNAPL
Depth to
Water
LNAPL
Thickness
Groundwater
Elevation
8/28/2000 --10.28 --87.70
8/16/2001 --9.18 --88.80
8/28/2000 --13.02 --86.98
8/16/2001 --14.17 --85.83
11/20/2003 --10.60 --89.40
5/13/2015 --9.43 --90.57
7/13/2017 --11.70 --88.30
5/21/2019 --8.19 --91.81
11/6/2019 --13.55 --86.45
5/5/2020 --8.55 --91.45
1/24/2023 --10.33 --89.67
8/28/2000 --8.74 --86.92
8/16/2001 --9.50 --86.16
11/20/2003 --8.42 --87.24
5/13/2015 --7.30 --88.36
7/13/2017 --10.47 --85.19
5/21/2019 --7.19 --88.47
11/6/2019 --13.21 --82.45
5/5/2020 --5.32 --90.34
1/24/2023 --7.51 --88.15
8/28/2000 --10.52 --85.79
8/16/2001 --6.97 --89.34
11/20/2003 --5.99 --90.32
5/13/2015 --5.00 --91.31
7/13/2017 --7.80 --88.51
5/21/2019 --5.45 --90.86
11/6/2019 --9.13 --87.18
5/5/2020 --3.92 --92.39
1/24/2023 --3.34 --92.97
8/16/2001 --11.34 --85.85
11/20/2003 --7.63 --89.56
5/13/2015 --7.51 --89.68
7/13/2017 --9.62 --87.57
5/21/2019 --7.36 --89.83
11/6/2019
5/5/2020
1/24/2023 --5.97 --91.22
8/16/2001 --15.64 --89.59
11/20/2003 --10.98 --89.59
5/13/2015 --9.91 --90.66
7/13/2017 --12.38 --88.19
5/21/2019 --10.76 --89.81
11/6/2019 --12.64 --87.93
5/5/2020 --10.72 --89.85
1/24/2023
8/16/2001 --12.56 --80.63
11/20/2003 --10.25 --82.94
7/2/2015 --11.21 --81.98
1/27/2021 --6.80 --86.44
1/24/2023 --11.66 --81.58
8/16/2001 --17.45 --83.12
11/20/2003 --12.26 --88.31
5/13/2015 --13.40 --87.17
7/13/2017 --14.99 --85.58
5/21/2019 --13.30 --87.27
11/6/2019
5/5/2020
1/24/2023 --11.85 --88.72
8/1/2018 --19.60 --72.26
5/21/2019 --9.58 --82.28
11/6/2019 --Dry --Dry
5/5/2020 --10.80 --81.06
1/24/2023 --12.33 --79.53
8/1/2018 --21.67 --83.43
5/21/2019 --15.47 --89.63
11/6/2019 --21.22 --83.88
5/5/2020 --15.56 --89.54
1/24/2023 --17.16 --87.94
8/28/2000 --26.46 --71.63
8/16/2001 --10.35 --87.74
11/20/2003 --23.68 --74.41
5/13/2015 --36.00 --62.09
7/13/2017 --31.09 --67.00
5/21/2019 --36.22 --61.87
11/6/2019
5/5/2020
1/24/2023 --36.59 --61.50
Notes:
Not Measured
Not Measured
Not Measured
MW-8 8/7/01 7-22 22 100.57
Not Measured
Not Measured / Could Not Locate
1. LNAPL = Light non-aqueous phase liquid
MW-6 6/28/01 5-20 20 100.57
105.10
Not Measured
MW-7R
93.19
MW-2 8/22/00 9-19 19 100.00
MW-3 8/22/00 5-15
MW-9 5/25/18 10-20 20 91.86
96.31
1/20/21
MW-4 19
6-166/27/2000
97.19144-14
16
6/28/01
15 95.66
5. * - well finished with stick-up casing
Abandoned November 2003
2. -- = LNAPL not detected
3. TOC = Top of casing
VEW-1
MW-1 97.98
8/23/00 9-19
Not Measured
MW-7
MW-5
4. bgs = below ground surface
MW-10*7/26/18
98.093730-378/22-23/00
7/3/01
10-20 20 93.24
Destroyed
205-20
10-20 20
Page 1 of 1
TABLE 3
GROUNDWATER ANALYTICAL RESULTS
FORMER AUDDIE'S #4
4105 OLD LEXINGTON ROAD
ASHEBORO, RANDOLPH COUNTY, NORTH CAROLINA
INCIDENT #18068
MW-2 1/24/2023 15,500 17,900 2,340 11,880 12,000 589 809J 73.8J 2,920 777 <500 271J 60.9J
MW-3 1/24/2023 146 67.9 36.2 183.3J 10.6J <20.0 <100 <20.0 42.3 23.2 <20.0 5.61J <20.0
MW-4 1/24/2023 <1.00 <1.00 <1.00 <3.00 <1.00 <1.00 <5.00 <1.00 <1.00 <1.00 <1.00 <1.00 <1.00
MW-5 1/24/2023 <1.00 <1.00 <1.00 <3.00 <1.00 <1.00 <5.00 <1.00 <1.00 <1.00 <1.00 <1.00 <1.00
MW-6 1/24/2023
MW-7R 1/24/2023 75.5 10.5J 11.7J 141.45J 27.7 <20.0 81.9J 10.1J 91.1 45.9 4.17J 34.6 3.02J
MW-8 1/24/2023 <1.00 <1.00 <1.00 <3.00 <1.00 <1.00 <5.00 <1.00 <1.00 <1.00 <1.00 <1.00 <1.00
MW-9 1/24/2023 <5.00 <5.00 <5.00 <15.00 <5.00 <5.00 <25.0 <5.00 <5.00 <5.00 <5.00 <5.00 <5.00
MW-10 1/24/2023 <1.00 <1.00 <1.00 <3.00 24.5 0.907J <5.00 <1.00 <1.00 <1.00 <1.00 <1.00 <1.00
VEW-1 1/24/2023 <1.00 <1.00 <1.00 <3.00 5.32 0.118J <5.00 <1.00 <1.00 <1.00 <1.00 <1.00 <1.00
1 600 600 500 20 70 6 70 400 400 70 70 70
5,000 260,000 80,000 50,000 20,000 70,000 6,000 30,500 28,500 24,100 5,900 26,100 70,000
Notes:
1. MTBE = Methyl Tertiary Butyl Ether
2. IPE = Isopropyl Ether
3. "<" or ND = Not detected at or above the laboratory reporting limit
4. Concentrations are reported in micrograms per liter (ug/l) = parts per billion (ppb)
5. Concentrations in bold equal or exceed the corresponding NCDEQ Groundwater Quality 2L Standard (2L Standard)
6. Italized concentrations equal or exceed the corresponding NCDEQ Gross Contamination Limit (GCL)
Not Sampled / Could Not Locate StyreneEPA 6200B
n-PropylbenzeneXylenes (Total)1,2,4-TrimethylbenzeneMTBEEthylbenzenen-Butylbenzene2L Standard
GCL NaphthaleneIsopropylbenzene1,3,5-Trimethylbenzene7. NE = Not established
Analytical Method
WELL ID Date
Collected
BenzeneTolueneIPE
TABLE 4
HISTORICAL GROUNDWATER ANALYTICAL RESULTS
FORMER AUDDIE'S #4
4105 OLD LEXINGTON ROAD
ASHEBORO, RANDOLPH COUNTY, NORTH CAROLINA
INCIDENT #18068
3030C
6/28/2000 19,000 33,000 3,000 16,000 7,100 460 ------------------1 106,600 32,700 9,800
8/28/2000 20,300 26,000 2,080 11,900 66,000 815 ------------------110 121,400 32,400 9,700
11/20/2003 23,600 25,100 2,730 12,240 56,600 BDL ------------------NA NA NA NA
5/13/2015 19,000 27,000 2,100 19,600 32,000 970 <60 90J 5,200 1,200 <97 180J <42 <62 320 NA NA NA NA
7/13/2017 13,100 20,700 2,840 28,300 18,700 815 2,600 210 11,900 3,390 <100 859 113 65.9 840 NA NA NA NA
5/21/2019 14,300 22,000 1,740 18,500 13,800 673 886 <250 5,190 1,370 <100 <250 <250 <250 271 NA NA NA NA
11/6/2019 11,400 15,300 1,440 7,060 11,700 445 715 <250 1,880 454 <100 <250 <250 <250 <250 NA NA NA NA
5/5/2020 9,810 15,200 1,570 14,500 13,100 630 1,380 <100 4,840 1,200 <40 101 <100 <100 335 NA NA NA NA
1/24/2023 15,500 17,900 2,340 11,880 12,000 589 809J 73.8J 2,920 777 <500 <500 <500 <500 271J NA NA NA NA
8/28/2000 6,400 13,800 1,300 BDL 5,050 234 ------------------4 39,510 16,200 4,170
11/20/2003 13,900 25,000 1,740 9,940 6,400 1,290 ------------------NA NA NA NA
5/13/2015 10,000 6,600 1,600 8,100 4,300 300 <24 60J 2,300 520 <39 48J <100 <25 190 NA NA NA NA
7/13/2017 7,380 4,660 1,530 7,040 2,600 232 621 58.4 1,790 480 <20 42.4 <10 <10 189 NA NA NA NA
5/21/2019 6,090 3,290 1,460 5,840 2,000 187 487 61.4 1,520 421 <20 65.0 <50 <50 199 NA NA NA NA
11/6/2019 2,570 1,630 668 3,090 767 69.8 349 26.8 908 270 <10 <25 <25 <25 92.8 NA NA NA NA
5/5/2020 3,820 2,000 1,020 4,340 1,210 118 331 37.0 1,170 341 <10 <25 <25 <25 119 NA NA NA NA
1/24/2023 146 67.9 36.2 183.3J 10.6J <20.0 <100 <20.0 42.3 23.2 <20.0 <20.0 <20.0 <20.0 5.61J NA NA NA NA
8/28/2000 21.1 17.7 4.4 22.6 8.2 BDL ------------------2 200 BDL BDL
11/20/2003 24.9 19.6 10.6 20.81 10.9 BDL ------------------NA NA NA NA
5/13/2015 <0.079 0.14J <0.092 <0.18 0.13J <0.18 <0.12 <0.11 <0.18 <0.1 <0.19 <0.054 <0.084 <0.12 <0.094 NA NA NA NA
7/13/2017 <0.30 <0.20 <0.20 <0.60 <0.20 <0.10 <0.50 <0.20 <0.30 <0.30 <0.20 <0.10 <0.10 <0.10 <0.10 NA NA NA NA
5/21/2019 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.20 <0.50 <0.50 <0.50 <0.50 NA NA NA NA
11/6/2019 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 < 0.20 < 0.50 <0.50 < 0.50 < 0.50 NA NA NA NA
5/5/2020 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.20 <0.50 <0.50 <0.50 <0.50 NA NA NA NA
1/24/2023 <1.00 <1.00 <1.00 <3.00 <1.00 <1.00 <5.00 <1.00 <1.00 <1.00 <1.00 <1.00 <1.00 <1.00 <1.00 NA NA NA NA
1 600 600 500 20 70 6 70 400 400 0.4 70 70 25 70 15 400 700 200
5,000 260,000 80,000 50,000 20,000 70,000 6,000 30,500 28,500 24,100 400 5,900 8,800 11,700 26,100 15,000 NE NE NE
Notes:
1. MTBE = Methyl Tertiary Butyl Ether
2. IPE = Isopropyl Ether
3. "<" or BDL = Not detected at or above the laboratory detection limit or reporting limit
4. Concentrations are reported in micrograms per liter (ug/l) = parts per billion (ppb)
5. Concentrations in bold equal or exceed the corresponding NCDEQ Groundwater Quality 2L Standard (2L Standard)
6. GCL = Gross Contamination Limit
MADEP VPH
n-Butylbenzenen-Propylbenzene1,2-Dichloroethanep-Isopropytoluene1,2,4-TrimethylbenzeneEPA 6200B
1,3,5-Trimethylbenzenesec-ButylbenzeneC5-C8 AliphaticsWELL ID
BenzeneTolueneMW-3
Abandoned November 2003 C9-C22 AromaticsLeadC9-C18 AliphaticsMW-2 Ethylbenzene10. -- = Not reported in historical tables
7. NE = Not established
9. NA = Not analyzed
Analytical Method
Xylenes (Total)NaphthaleneGCL MTBEIsopropylbenzeneDate
Collected
MW-1 IPE2L Standard
MW-4
8. J = Indicates constituent was detected above laboratory detection limit but below laboratory reporting limit
Page 1 of 3
TABLE 4
HISTORICAL GROUNDWATER ANALYTICAL RESULTS
FORMER AUDDIE'S #4
4105 OLD LEXINGTON ROAD
ASHEBORO, RANDOLPH COUNTY, NORTH CAROLINA
INCIDENT #18068
3030C MADEP VPH
n-Butylbenzenen-Propylbenzene1,2-Dichloroethanep-Isopropytoluene1,2,4-TrimethylbenzeneEPA 6200B
1,3,5-Trimethylbenzenesec-ButylbenzeneC5-C8 AliphaticsWELL ID
BenzeneTolueneC9-C22 AromaticsLeadC9-C18 AliphaticsEthylbenzeneAnalytical Method
Xylenes (Total)NaphthaleneMTBEIsopropylbenzeneDate
Collected
IPE7/4/2001 244 5,040 710 7,230 BDL 107 ------------------BDL 9,790 20,100 7,070
11/20/2003 8.41 4.97 19 49.81 BDL BDL ------------------NA NA NA NA
5/13/2015 <0.079 0.13J <0.092 <0.18 <0.09 <0.18 <0.12 <0.11 <0.18 <0.1 <0.19 <0.054 <0.084 <0.12 <0.094 NA NA NA NA
7/13/2017 <0.30 <0.20 <0.20 <0.60 <0.10 <0.20 <0.50 <0.20 <0.30 <0.30 <0.20 <0.10 <0.10 <0.10 <0.10 NA NA NA NA
5/21/2019 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.20 <0.50 <0.50 <0.50 <0.50 NA NA NA NA
1/24/2023 <1.00 <1.00 <1.00 <3.00 <1.00 <1.00 <5.00 <1.00 <1.00 <1.00 <1.00 <1.00 <1.00 <1.00 <1.00 NA NA NA NA
7/4/2001 2,730 2,780 225 1,054 BDL 118 ------------------BDL 12,000 2,800 706
11/20/2003 465 991 175 748 180 BDL ------------------NA NA NA NA
5/13/2015 190 630 160 630 150 4.1J 25 6.3 120 27 <0.19 1.2J <0.84 <1.2 17 NA NA NA NA
7/13/2017 15.1 2.5 0.20 22.2 0.41 <0.10 <0.50 <0.20 2.4 0.53 <0.20 0.28 <0.10 <0.10 <0.10 NA NA NA NA
5/21/2019 62.8 96.2 59.0 162 54.1 1.9 13.5 2.4 45.7 10.3 <0.20 <0.50 <0.50 <0.50 6.5 NA NA NA NA
11/6/2019 118 65.0 88.2 188 38.3 1.5 19.9 9.3 133 5.6 <0.20 1.3 1.0 <0.50 17.8 NA NA NA NA
5/5/2020 133 136 97.9 280 279 8.3 40.2 5.6 132 17.3 <1.0 <2.5 <2.5 <2.5 14.6 NA NA NA NA
7/4/2001 9,640 26,400 2,070 10,620 <500 <500 ------------------BDL 55,300 21,700 4,220
11/20/2003 7,000 23,600 3,120 13,490 <50 <50 ------------------NA NA NA NA
7/2/2015 14,000 13,000 2,500 12,600 370 5,400 440 <23 2,700 360 300 <11 <17 <25 <19 NA NA NA NA
7/13/2017
1/27/2021 277 61.7 26.0 1,110 133 8.4 255 17.1 637 295 <2.0 <5.0 <5.0 <5.0 41.2 NA NA NA NA
1/24/2023 75.5 10.5J 11.7J 141.45J 27.7 <20.0 81.9J 10.1J 91.1 45.9 <20.0 4.17J <20.0 <20.0 34.6 NA NA NA NA
8/9/2001 BDL BDL BDL BDL BDL BDL ------------------BDL BDL BDL BDL
11/20/2003 BDL BDL BDL BDL BDL BDL ------------------NA NA NA NA
5/13/2015 <0.079 0.12J <0.092 <0.18 <0.09 <0.18 <0.12 <0.11 <0.18 <0.1 <0.19 <0.054 <0.084 <0.12 <0.094 NA NA NA NA
7/13/2017 <0.30 <0.20 <0.20 <0.60 <0.20 <0.10 <0.50 <0.20 <0.30 <0.30 <0.20 <0.10 <0.10 <0.10 <0.10 NA NA NA NA
5/21/2019 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.20 <0.50 <0.50 <0.50 <0.50 NA NA NA NA
1/24/2023 <1.00 <1.00 <1.00 <3.00 <1.00 <1.00 <5.00 <1.00 <1.00 <1.00 <1.00 <1.00 <1.00 <1.00 <1.00 NA NA NA NA
8/1/2018 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.20 <0.50 <0.50 <0.50 <0.50 NA NA NA NA
5/21/2019 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.20 <0.50 <0.50 <0.50 <0.50 NA NA NA NA
5/5/2020 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.20 <0.50 <0.50 <0.50 <0.50 NA NA NA NA
1/24/2023 <5.00 <5.00 <5.00 <15.00 <5.00 <5.00 <25.0 <5.00 <5.00 <5.00 <5.00 <5.00 <5.00 <5.00 <5.00 NA NA NA NA
1 600 600 500 20 70 6 70 400 400 0.4 70 70 25 70 15 400 700 200
5,000 260,000 80,000 50,000 20,000 70,000 6,000 30,500 28,500 24,100 400 5,900 8,800 11,700 26,100 15,000 NE NE NE
Notes:
1. MTBE = Methyl Tertiary Butyl Ether
2. IPE = Isopropyl Ether
3. "<" or BDL = Not detected at or above the laboratory detection limit or reporting limit
4. Concentrations are reported in micrograms per liter (ug/l) = parts per billion (ppb)
5. Concentrations in bold equal or exceed the corresponding NCDEQ Groundwater Quality 2L Standard (2L Standard)
6. GCL = Gross Contamination Limit
9. NA = Not analyzed
MW-5
2L Standard
GCL
8. J = Indicates constituent was detected above laboratory detection limit but below laboratory reporting limit
MW-7R
MW-6
Destroyed
MW-9
MW-8
MW-7
7. NE = Not established
10. -- = Not reported in historical tables
Page 2 of 3
TABLE 4
HISTORICAL GROUNDWATER ANALYTICAL RESULTS
FORMER AUDDIE'S #4
4105 OLD LEXINGTON ROAD
ASHEBORO, RANDOLPH COUNTY, NORTH CAROLINA
INCIDENT #18068
3030C MADEP VPH
n-Butylbenzenen-Propylbenzene1,2-Dichloroethanep-Isopropytoluene1,2,4-TrimethylbenzeneEPA 6200B
1,3,5-Trimethylbenzenesec-ButylbenzeneC5-C8 AliphaticsWELL ID
BenzeneTolueneC9-C22 AromaticsLeadC9-C18 AliphaticsEthylbenzeneAnalytical Method
Xylenes (Total)NaphthaleneMTBEIsopropylbenzeneDate
Collected
IPE8/1/2018 15.9 <10 <10 <10 1,760 52.9 <10 <10 <10 <10 <4.0 <10 <10 <10 <10 NA NA NA NA
5/21/2019 <0.50 <0.50 <0.50 <0.50 0.69 <0.50 <0.50 <0.50 <0.50 <0.50 <0.20 <0.50 <0.50 <0.50 <0.50 NA NA NA NA
11/6/2019 21.6 <0.50 <0.50 0.71 225 12.3 1.2 <0.50 1.5 <0.50 <0.20 <0.50 <0.50 <0.50 <0.50 NA NA NA NA
5/5/2020 <0.50 <0.50 <0.50 <0.50 11.4 0.59 <0.50 <0.50 <0.50 <0.50 <0.20 <0.50 <0.50 <0.50 <0.50 NA NA NA NA
1/24/2023 <1.00 <1.00 <1.00 <3.00 24.5 0.907J <5.00 <1.00 <1.00 <1.00 <1.00 <1.00 <1.00 <1.00 <1.00 NA NA NA NA
8/28/2000 7,500 6,400 419 4,500 46,000 660 ------------------2 31,600 12,080 3,650
11/20/2003 158 23 25 60.5 34,400 420 ------------------NA NA NA NA
5/13/2015 0.19J 0.25J <0.092 0.29J 8.2 0.27J <0.12 <0.11 <0.18 <0.1 <0.19 <0.054 <0.084 <0.12 <0.094 NA NA NA NA
7/13/2017 1.5 <0.20 <0.20 <0.60 5.7 0.42 <0.50 <0.20 <0.30 <0.30 <0.20 <0.10 <0.10 <0.10 <0.10 NA NA NA NA
5/21/2019 <0.50 <0.50 <0.50 <0.50 5.4 <0.50 <0.50 <0.50 <0.50 <0.50 <0.20 <0.50 <0.50 <0.50 <0.50 NA NA NA NA
1/24/2023 <1.00 <1.00 <1.00 <3.00 5.32 0.118J <5.00 <1.00 <1.00 <1.00 <1.00 <1.00 <1.00 <1.00 <1.00 NA NA NA NA
1 600 600 500 20 70 6 70 400 400 0.4 70 70 25 70 15 400 700 200
5,000 260,000 80,000 50,000 20,000 70,000 6,000 30,500 28,500 24,100 400 5,900 8,800 11,700 26,100 15,000 NE NE NE
Notes:
1. MTBE = Methyl Tertiary Butyl Ether
2. IPE = Isopropyl Ether
3. "<" or BDL = Not detected at or above the laboratory detection limit or reporting limit
4. Concentrations are reported in micrograms per liter (ug/l) = parts per billion (ppb)
5. Concentrations in bold equal or exceed the corresponding NCDEQ Groundwater Quality 2L Standard (2L Standard)
6. GCL = Gross Contamination Limit
10. -- = Not reported in historical tables
MW-10
VEW-1
2L Standard
GCL
8. J = Indicates constituent was detected above laboratory detection limit but below laboratory reporting limit
9. NA = Not analyzed
7. NE = Not established
Page 3 of 3
TABLE 5
NATURAL ATTENUATION PARAMETERS
FORMER AUDDIE'S #4
4105 OLD LEXINGTON ROAD
ASHEBORO, RANDOLPH COUNTY, NORTH CAROLINA
INCIDENT #18068
5/21/2019
5/5/2020
1/24/2023
5/21/2019
5/5/2020 17.2 0.80 NM 474.0 7.20 -5.4
1/24/2023
5/21/2019 21.1 3.81 NM 229.0 6.29 188.1
5/5/2020 18.9 1.62 NM 146.3 6.89 -16.3
1/24/2023 14.8 8.31 110.1 88.4 6.18 483.7
MW-5 1/24/2023 14.6 2.42 512.0 408.9 6.61 133.2
5/21/2019 21.1 2.12 NM 253.3 6.19 -108.6
5/5/2020 19.0 1.09 NM 216.8 7.04 -51.8
1/24/2023
MW-7R 1/24/2023 17.3 1.16 588 503 6.18 169.2
MW-8 1/24/2023 15.9 3.79 348.8 287.7 6.61 207.2
5/21/2019
5/5/2020 17.6 2.00 NM 233.4 7.58 104.4
1/24/2023 15.9 3.64 259.7 214.2 5.98 212.9
5/21/2019 18.1 2.36 NM 470.3 6.32 17.2
5/5/2020 18.6 0.85 NM 143.1 7.08 -9.9
1/24/2023 15.6 3.04 168.8 138.5 6.07 141.0
VEW-1 1/24/2023 15.2 5.58 1,208 982 7.33 176.1
Notes:
1. °C = degrees celsius
2. mg/L = milligram per liter
3. µS/cm = microsiemens per centimeter
4. std unit = standard unit
5. mV = millivolts
6. NM = not measured
Not Collected - Strong Petroleum Odor
WELL ID
Temperature (oC)Dissolved Oxygen (mg/L)Conductivity (µs/cm)pH (std unit)MW-10
MW-3
MW-4
MW-6
MW-9
Date
Collected
Not Collected - Strong Petroleum Odor
Dry
MW-2 Not Collected - Strong Petroleum Odor
Not Collected - Strong Petroleum OdorSpecific Conductivity (µs/cm)Not Sampled / Could Not Locate ORP (mV)Not Collected - Strong Petroleum Odor
TABLE 6
HISTORICAL WATER SUPPLY WELL ANALYTICAL RESULTS
FORMER AUDDIE'S #4
4105 OLD LEXINGTON ROAD
ASHEBORO, RANDOLPH COUNTY, NORTH CAROLINA
INCIDENT #18068
3030C
8/9/2001 BDL BDL BDL BDL BDL 28 BDL BDL BDL BDL
5/21/2019 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 NA NA NA NA
11/6/2019 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 NA NA NA NA
5/5/2020 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 NA NA NA NA
1/27/2021 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 NA NA NA NA
1/24/2023 <1.00 <1.00 <1.00 <3.00 3.24 0.757J NA NA NA NA
8/9/2001 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL
11/20/2003 BDL BDL BDL BDL BDL 103 NA NA NA NA
5/13/2015 <0.079 0.11J <0.092 <0.18 <0.18 <0.09 NA NA NA NA
5/5/2020 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 NA NA NA NA
8/9/2001 13.5 1.95 BDL 1.18 9.76 126 BDL 163 31.6 16.6
11/20/2003 BDL BDL BDL BDL BDL BDL NA NA NA NA
8/16/2001 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL
11/20/2003 BDL BDL BDL BDL BDL BDL NA NA NA NA
SW-5 5/5/2020 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 NA NA NA NA
5/13/2015 <0.079 <0.09 <0.092 <0.18 <0.18 <0.09 NA NA NA NA
7/13/2017 <0.30 <0.20 <0.20 <0.60 <0.10 <0.20 NA NA NA NA
5/21/2019 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 NA NA NA NA
11/6/2019 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 NA NA NA NA
5/5/2020 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 NA NA NA NA
1/27/2021 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 NA NA NA NA
8/16/2001 BDL BDL BDL BDL BDL BDL 3 BDL BDL BDL
5/13/2015 <0.079 <0.09 <0.092 <0.18 <0.18 <0.09 NA NA NA NA
SW-12*5/13/2015 <0.079 <0.09 <0.092 <0.18 <0.18 <0.09 NA NA NA NA
1 600 600 500 70 20 15 400 700 200
5,000 260,000 80,000 50,000 70,000 20,000 15,000 NE NE NE
Notes:
1. MTBE = Methyl Tertiary Butyl Ether
2. IPE = Isopropyl Ether
3. "<" or BDL = Not detected at or above the laboratory detection limit or reporting limit
4. Concentrations are reported in micrograms per liter (ug/l) = parts per billion (ppb)
5. Concentrations in bold equal or exceed the corresponding NCDEQ Groundwater Quality 2L Standard (2L Standard)
6. GCL = Gross Contamination Limit
7. NE = Not established
10. * = SW-12 was sampled under TA-1 for the former Country Store (Incident #18391). The sampled is labeled SW-4 in the Country Store reportC5-C8 AliphaticsC9-C18 AliphaticsC9-C22 AromaticsMTBEIPESW-1
Analytical Method 6200B MADEP VPH
WELL ID Date
Collected
BenzeneTolueneEthylbenzeneXylenes (Total)LeadSW-2
9. NA = Not analyzed
2L Standard
GCL
SW-3
SW-4
SW-8
8. J = Indicates constituent was detected above laboratory detection limit but below laboratory reporting limit
SW-7
Former Auddie’s #4

ATC Project No. SLC1806802 NCDEQ State Lead Program

FIGURES

2725 E. Millbrook Road, Suite 121
Raleigh, NC 27604
[phone]
FIGURE 1
SITE TOPOGRAPHIC MAP
PROJECT NO: SLC1806802
REVIEWED BY: AW SCALE: 1” = 850’DATE: 02/2023
FORMER AUDDIE’S #4 –INCIDENT #18068
4105 OLD LEXINGTON ROAD
ASHEBORO, NORTH CAROLINA
Source: My Free Topo
N
Site
OLD
LEX
INGTON
ROADGREEN FARM ROADRESIDENCESCALE: 1" = 40'010203040NMW-9MW-7MW-7RMW-3VEW-1MW-1MW-4MW-2MW-10SW-1MW-5SW-2MW-6FORMERUSTsSITELEGEND:SITE PROPERTY LINENOTE: ALL LOCATIONS ARE APPROXIMATEPARCEL LINEMW-1TYPE II MONITORING WELLWell IdentificationSW-1MW-7VEW-1TYPE III MONITORING WELLWell IdentificationABANDONED/DESTROYEDMONITORING WELLWell IdentificationWATER SUPPLY WELLWell IdentificationMW-8Figure: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\AUDDIE'S 4\SLC1806802-SITE.DWG, FIG2
SITE MAP02/20/2023SEE LOWER LEFTFORMER AUDDIE'S #4 - INCIDENT #18068
4015 OLD LEXINGTON ROAD
ASHEBORO, NORTH CAROLINA
SLC1806802AS SHOWNDH
EF2NOTES:
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
2725 E. Millbrook Road, Suite 121
Raleigh, NC 27604
[phone]
FIGURE 3
POTENTIAL RECEPTOR MAP
PROJECT NO: SLC1806802
REVIEWED BY: AW SCALE: 1” = 325’DATE: 02/2023
FORMER AUDDIE’S #4 –INCIDENT #18068
4105 OLD LEXINGTON ROAD
ASHEBORO, NORTH CAROLINA
Source: Randolph County, NC GIS Website
Site
N
SW-12
SW-11
SW-10
SW-9
SW-8
SW-7
SW-6 SW-5
SW-4
SW-3
SW-2
SW-1
SW-13 SW-24
Potable Water Supply Well
500 Foot Radius
1,000 Foot Radius
OLD
LEX
INGTON
ROADGREEN FARM ROADRESIDENCESCALE: 1" = 40'010203040NMW-9MW-7MW-7RMW-3VEW-1MW-1MW-4MW-2MW-10SW-1MW-5SW-2MW-6FORMERUSTsSITELEGEND:SITE PROPERTY LINENOTE: ALL LOCATIONS ARE APPROXIMATEPARCEL LINESW-1MW-7VEW-1TYPE III MONITORING WELLWell IdentificationABANDONED/DESTROYEDMONITORING WELLWell IdentificationWATER SUPPLY WELLWell Identification92.0GROUNDWATER ELEVATION CONTOUR(DASHED WHERE INFERRED) (ft)GROUNDWATER FLOW DIRECTIONMW-289.67MONITORING WELLWell IdentificationRelative Groundwater Elevation (ft)87.9488.15*61.5089.6792.9781.5879.5391.22NMMW-888.7292.090.0
8
8
.
0
86.084.082.080.0
Figure: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\AUDDIE'S 4\SLC1806802-POT.DWG, FIG4
GROUNDWATER ELEVATION CONTOUR MAP02/27/2023SEE LOWER LEFTFORMER AUDDIE'S #4 - INCIDENT #18068
4015 OLD LEXINGTON ROAD
ASHEBORO, NORTH CAROLINA
SLC18006802AS SHOWNDH
EF4NOTES:
1.Features shown are not an authoritative location, nor are they presented
to a stated accuracy.
2.Groundwater elevations measured on January 24, 2023.
3.NM = not measured.
4.* = VEW-1 was omitted from interpretation.
COORDINATE SYSTEM:
NAD 1983 NORTH CAROLINA STATE PLANE FIPS 3200, US SURVEY FEET
OLD
LEX
INGTON
ROADGREEN FARM ROADRESIDENCESCALE: 1" = 40'010203040NMW-9MW-7MW-7RMW-3VEW-1MW-1MW-4MW-2MW-10SW-1MW-5SW-2MW-6FORMERUSTsSITELEGEND:SITE PROPERTY LINENOTE: ALL LOCATIONS ARE APPROXIMATEPARCEL LINESW-1MW-7VEW-1TYPE III MONITORING WELLWell IdentificationABANDONED/DESTROYEDMONITORING WELLWell IdentificationWATER SUPPLY WELLWell Identification100BENZENE ISOCONCENTRATION CONTOUR(DASHED WHERE INFERRED) (µg/L)MW-4<1.00MONITORING WELLWell IdentificationBenzene Concentration (µg/L)<1.00NSMW-815,500146<1.0075.5<5.00<1.00<1.00<1.00110NS<1.0010010,0001,000Figure: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\AUDDIE'S 4\SLC1806802-BENZ.DWG, FIG5
DISSOLVED BENZENE ISOCONCENTRATION
CONTOUR MAP02/27/2023SEE LOWER LEFTFORMER AUDDIE'S #4 - INCIDENT #18068
4015 OLD LEXINGTON ROAD
ASHEBORO, NORTH CAROLINA
SLC18006802AS SHOWNDH
EF5NOTES:
1.Features shown are not an authoritative location, nor are they presented to
a stated accuracy.
2.Groundwater samples collected on January 4, 2023.
3.Concentrations are reported in micrograms per liter (µg/L).
4.Concentrations in BOLD equal or exceed the corresponding NCDEQ
Groundwater Quality 2L Standard (2L Standard).
5.Concentrations in ITALIZED equal or exceed the corresponding NCDEQ
Gross Contamination Limit (GCL).
6.NS = not sampled.
COORDINATE SYSTEM:
NAD 1983 NORTH CAROLINA STATE PLANE FIPS 3200, US SURVEY FEET
OLD
LEX
INGTON
ROADGREEN FARM ROADRESIDENCESCALE: 1" = 40'010203040NMW-9MW-7MW-7RMW-3VEW-1MW-1MW-4MW-2MW-10SW-1MW-5SW-2MW-6FORMERUSTsSITELEGEND:SITE PROPERTY LINENOTE: ALL LOCATIONS ARE APPROXIMATEPARCEL LINEMW-1TYPE II MONITORING WELLWell IdentificationSW-1MW-7VEW-1TYPE III MONITORING WELLWell IdentificationABANDONED/DESTROYEDMONITORING WELLWell IdentificationWATER SUPPLY WELLWell IdentificationMW-8NSFigure: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\AUDDIE'S 4\SLC1806802-GW.DWG, FIG6
ADDITIONAL CHEMICALS OF CONCERN
IN GROUNDWATER02/27/2023SEE LOWER LEFTFORMER AUDDIE'S #4 - INCIDENT #18068
4015 OLD LEXINGTON ROAD
ASHEBORO, NORTH CAROLINA
SLC18006802AS SHOWNDH
EF6NOTES:
1.Features shown are not an authoritative location, nor are they presented to a stated
accuracy.
2.Groundwater samples collected on January 24, 2023.
3.Concentrations are reported in micrograms per liter (µg/L).
4.Concentrations in BOLD equal or exceed the corresponding NCDEQ Groundwater
Quality 2L Standard (2L Standard).
5.Concentrations in ITALIZED equal or exceed the corresponding NCDEQ Gross
Contamination Limit (GCL).
6.J = the reported value is an estimate.
7.NS = not sampled.
COORDINATE SYSTEM:
NAD 1983 NORTH CAROLINA STATE PLANE FIPS 3200, US SURVEY FEET
Former Auddie’s #4

ATC Project No. SLC1806802 NCDEQ State Lead Program

APPENDIX A

SITE PHOTOGRAPHS

Photo 1: Site. Photo 2: Monitoring well MW-2.
Site Photographs

Former Auddie’s #4 – Incident #18068

4105 Old Lexington Road
Asheboro, Randolph County, North Carolina
2725 E. Millbrook Road, Suite 121
Raleigh, North Carolina
Tel: [phone] Fax: [phone]
Photos Taken By: Laura de Sousa Site ID: Incident #18068 ATC Project No.: SLC1806802

Photo 3: Monitoring well MW-3. Photo 4: Monitoring well MW-4.
Site Photographs

Former Auddie’s #4 – Incident #18068

4105 Old Lexington Road
Asheboro, Randolph County, North Carolina
2725 E. Millbrook Road, Suite 121
Raleigh, North Carolina
Tel: [phone] Fax: [phone]
Photos Taken By: Laura de Sousa Site ID: Incident #18068 ATC Project No.: SLC1806802

Photo 5: Monitoring well MW-5. Photo 6: Monitoring well MW-7R.
Site Photographs

Former Auddie’s #4 – Incident #18068

4105 Old Lexington Road
Asheboro, Randolph County, North Carolina
2725 E. Millbrook Road, Suite 121
Raleigh, North Carolina
Tel: [phone] Fax: [phone]
Photos Taken By: Laura de Sousa Site ID: Incident #18068 ATC Project No.: SLC1806802

Photo 7: Monitoring well MW-8. Photo 8: Monitoring well MW-9.
Site Photographs

Former Auddie’s #4 – Incident #18068

4105 Old Lexington Road
Asheboro, Randolph County, North Carolina
2725 E. Millbrook Road, Suite 121
Raleigh, North Carolina
Tel: [phone] Fax: [phone]
Photos Taken By: Laura de Sousa Site ID: Incident #18068 ATC Project No.: SLC1806802

Photo 9: Monitoring well MW-10. Photo 10: Monitoring well VEW-1.
Site Photographs

Former Auddie’s #4 – Incident #18068

4105 Old Lexington Road
Asheboro, Randolph County, North Carolina
2725 E. Millbrook Road, Suite 121
Raleigh, North Carolina
Tel: [phone] Fax: [phone]
Photos Taken By: Laura de Sousa Site ID: Incident #18068 ATC Project No.: SLC1806802

Photo 11: Water supply well SW-1. Photo 12: Water supply well sample SW-1.
Site Photographs

Former Auddie’s #4 – Incident #18068

4105 Old Lexington Road
Asheboro, Randolph County, North Carolina
2725 E. Millbrook Road, Suite 121
Raleigh, North Carolina
Tel: [phone] Fax: [phone]
Photos Taken By: Laura de Sousa Site ID: Incident #18068 ATC Project No.: SLC1806802
Former Auddie’s #4

ATC Project No. SLC1806802 NCDEQ State Lead Program

APPENDIX B

FIELD NOTES

Former Auddie’s #4

ATC Project No. SLC1806802 NCDEQ State Lead Program

APPENDIX C

LABORATORY ANALYTICAL RESULTS

ANALYTICAL REPORT
February 03, 2023
ATC Group Services LLC
Sample Delivery Group:L1580131
Samples Received:01/27/2023
Project Number:SLC1806802
Description:Auddie's #4
Site:18068
Report To:Ashley Winkelman
2725 E. Millbrook Road, Ste 121
Raleigh, NC 27604
Entire Report Reviewed By:
February 03, 2023
[Preliminary Report]
Heather J Wagner
Project Manager
Results relate only to the items tested or calibrated and are reported as rounded values. This test report shall not be reproduced, except in full, without written approval of the laboratory. Where applicable, sampling conducted by Pace Analytical National is performed per guidance provided in laboratory standard operating procedures ENV-SOP-MTJL-0067 and ENV-SOP-MTJL-0068. Where sampling conducted by the customer, results relate to the accuracy of the information provided, and as the samples are received.
Pace Analytical National
12065 Lebanon Rd Mount Juliet, TN 37122 615-758-5858 800-767-5859 www.pacenational.com
1 Cp
2Tc
3Ss
4Cn
5Ds
6Sr
7Qc
8Gl
9Al
10Sc
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February 03, 2023
Jason Romer
Project Manager
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
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TABLE OF CONTENTS
Cp: Cover Page 1
Tc: Table of Contents 2
Ss: Sample Summary 3
Cn: Case Narrative 5
Ds: Detection Summary 6
Sr: Sample Results 7
MW-2 L1580131-01 7
MW-3 L1580131-02 9
MW-4 L1580131-03 11
MW-5 L1580131-04 13
MW-7R L1580131-05 15
MW-8 L1580131-06 17
MW-9 L1580131-07 19
MW-10 L1580131-08 21
VEW-1 L1580131-09 23
SW-1 L1580131-10 25
FIELD BLANK L1580131-11 27
Qc: Quality Control Summary 29
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 29
Gl: Glossary of Terms 37
Al: Accreditations & Locations 38
Sc: Sample Chain of Custody 39
1 Cp
2Tc
3Ss
4Cn
5Ds
6Sr
7Qc
8Gl
9Al
10Sc
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SAMPLE SUMMARY
Collected by Collected date/time Received date/time
MW-2 L1580131-01 GW Aaron D. Springer 01/24/23 14:35 01/27/23 08:30
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 WG1998813 500 02/02/23 17:17 02/02/23 17:17 DWR Mt. Juliet, TN
Collected by Collected date/time Received date/time
MW-3 L1580131-02 GW Aaron D. Springer 01/24/23 14:05 01/27/23 08:30
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 WG1998813 20 02/02/23 17:37 02/02/23 17:37 DWR Mt. Juliet, TN
Collected by Collected date/time Received date/time
MW-4 L1580131-03 GW Aaron D. Springer 01/24/23 12:30 01/27/23 08:30
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 WG1998813 1 02/02/23 13:58 02/02/23 13:58 DWR Mt. Juliet, TN
Collected by Collected date/time Received date/time
MW-5 L1580131-04 GW Aaron D. Springer 01/24/23 11:45 01/27/23 08:30
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 WG1998813 1 02/02/23 14:18 02/02/23 14:18 DWR Mt. Juliet, TN
Collected by Collected date/time Received date/time
MW-7R L1580131-05 GW Aaron D. Springer 01/24/23 13:50 01/27/23 08:30
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 WG1998813 20 02/02/23 17:57 02/02/23 17:57 DWR Mt. Juliet, TN
Collected by Collected date/time Received date/time
MW-8 L1580131-06 GW Aaron D. Springer 01/24/23 11:00 01/27/23 08:30
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 WG1998813 1 02/02/23 14:38 02/02/23 14:38 DWR Mt. Juliet, TN
Collected by Collected date/time Received date/time
MW-9 L1580131-07 GW Aaron D. Springer 01/24/23 13:05 01/27/23 08:30
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 WG1998813 5 02/02/23 18:17 02/02/23 18:17 DWR Mt. Juliet, TN
Collected by Collected date/time Received date/time
MW-10 L1580131-08 GW Aaron D. Springer 01/24/23 11:15 01/27/23 08:30
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 WG1998813 1 02/02/23 14:58 02/02/23 14:58 DWR Mt. Juliet, TN
1 Cp
2Tc
3Ss
4Cn
5Ds
6Sr
7Qc
8Gl
9Al
10Sc
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SAMPLE SUMMARY
Collected by Collected date/time Received date/time
VEW-1 L1580131-09 GW Aaron D. Springer 01/24/23 11:25 01/27/23 08:30
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 WG1998813 1 02/02/23 15:18 02/02/23 15:18 DWR Mt. Juliet, TN
Collected by Collected date/time Received date/time
SW-1 L1580131-10 GW Aaron D. Springer 01/24/23 13:20 01/27/23 08:30
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 WG1998813 1 02/02/23 15:38 02/02/23 15:38 DWR Mt. Juliet, TN
Collected by Collected date/time Received date/time
FIELD BLANK L1580131-11 GW Aaron D. Springer 01/24/23 14:45 01/27/23 08:30
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 WG1997802 1 01/31/23 23:04 01/31/23 23:04 ADM Mt. Juliet, TN
1 Cp
2Tc
3Ss
4Cn
5Ds
6Sr
7Qc
8Gl
9Al
10Sc
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CASE NARRATIVE
All sample aliquots were received at the correct temperature, in the proper containers, with the
appropriate preservatives, and within method specified holding times, unless qualified or notated within
the report. Where applicable, all MDL (LOD) and RDL (LOQ) values reported for environmental samples
have been corrected for the dilution factor used in the analysis. All Method and Batch Quality Control
are within established criteria except where addressed in this case narrative, a non-conformance form
or properly qualified within the sample results. By my digital signature below, I affirm to the best of my
knowledge, all problems/anomalies observed by the laboratory as having the potential to affect the
quality of the data have been identified by the laboratory, and no information or data have been
knowingly withheld that would affect the quality of the data.
[Preliminary Report]
Heather J Wagner
Project Manager
1 Cp
2Tc
3Ss
4Cn
5Ds
6Sr
7Qc
8Gl
9Al
10Sc
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Jason Romer
Project Manager
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DETECTION SUMMARY
Volatile Organic Compounds (GC/MS) by Method 6200B-2011
Result Qualifier MDL RDL Dilution Analysis Batch
Client ID Lab Sample ID Analyte ug/l ug/l ug/l date / time
MW-2 L1580131-01 Benzene 15500 47.1 500 500 02/02/2023 17:17 WG1998813
MW-2 L1580131-01 Di-isopropyl ether 589 52.5 500 500 02/02/2023 17:17 WG1998813
MW-2 L1580131-01 Ethylbenzene 2340 68.5 500 500 02/02/2023 17:17 WG1998813
MW-2 L1580131-01 Isopropylbenzene 73.8 J 52.5 500 500 02/02/2023 17:17 WG1998813
MW-2 L1580131-01 Methyl tert-butyl ether 12000 50.5 500 500 02/02/2023 17:17 WG1998813
MW-2 L1580131-01 Naphthalene 809 J 500 2500 500 02/02/2023 17:17 WG1998813
MW-2 L1580131-01 n-Propylbenzene 271 J 49.7 500 500 02/02/2023 17:17 WG1998813
MW-2 L1580131-01 Styrene 60.9 J 59.0 500 500 02/02/2023 17:17 WG1998813
MW-2 L1580131-01 Toluene 17900 139 500 500 02/02/2023 17:17 WG1998813
MW-2 L1580131-01 1,2,4-Trimethylbenzene 2920 161 500 500 02/02/2023 17:17 WG1998813
MW-2 L1580131-01 1,3,5-Trimethylbenzene 777 52.0 500 500 02/02/2023 17:17 WG1998813
MW-2 L1580131-01 o-Xylene 4490 87.0 500 500 02/02/2023 17:17 WG1998813
MW-2 L1580131-01 m&p-Xylenes 7390 215 1000 500 02/02/2023 17:17 WG1998813
MW-3 L1580131-02 Benzene 146 1.88 20.0 20 02/02/2023 17:37 WG1998813
MW-3 L1580131-02 Ethylbenzene 36.2 2.74 20.0 20 02/02/2023 17:37 WG1998813
MW-3 L1580131-02 Methyl tert-butyl ether 10.6 J 2.02 20.0 20 02/02/2023 17:37 WG1998813
MW-3 L1580131-02 n-Propylbenzene 5.61 J 1.99 20.0 20 02/02/2023 17:37 WG1998813
MW-3 L1580131-02 Toluene 67.9 5.56 20.0 20 02/02/2023 17:37 WG1998813
MW-3 L1580131-02 1,2,4-Trimethylbenzene 42.3 6.44 20.0 20 02/02/2023 17:37 WG1998813
MW-3 L1580131-02 1,3,5-Trimethylbenzene 23.2 2.08 20.0 20 02/02/2023 17:37 WG1998813
MW-3 L1580131-02 o-Xylene 19.3 J 3.48 20.0 20 02/02/2023 17:37 WG1998813
MW-3 L1580131-02 m&p-Xylenes 164 8.60 40.0 20 02/02/2023 17:37 WG1998813
MW-7R L1580131-05 Benzene 75.5 1.88 20.0 20 02/02/2023 17:57 WG1998813
MW-7R L1580131-05 n-Butylbenzene 4.17 J 3.14 20.0 20 02/02/2023 17:57 WG1998813
MW-7R L1580131-05 Ethylbenzene 11.7 J 2.74 20.0 20 02/02/2023 17:57 WG1998813
MW-7R L1580131-05 Isopropylbenzene 10.1 J 2.10 20.0 20 02/02/2023 17:57 WG1998813
MW-7R L1580131-05 Methyl tert-butyl ether 27.7 2.02 20.0 20 02/02/2023 17:57 WG1998813
MW-7R L1580131-05 Naphthalene 81.9 J 20.0 100 20 02/02/2023 17:57 WG1998813
MW-7R L1580131-05 n-Propylbenzene 34.6 1.99 20.0 20 02/02/2023 17:57 WG1998813
MW-7R L1580131-05 Styrene 3.02 J 2.36 20.0 20 02/02/2023 17:57 WG1998813
MW-7R L1580131-05 Toluene 10.5 J 5.56 20.0 20 02/02/2023 17:57 WG1998813
MW-7R L1580131-05 1,2,4-Trimethylbenzene 91.1 6.44 20.0 20 02/02/2023 17:57 WG1998813
MW-7R L1580131-05 1,3,5-Trimethylbenzene 45.9 2.08 20.0 20 02/02/2023 17:57 WG1998813
MW-7R L1580131-05 o-Xylene 4.45 J 3.48 20.0 20 02/02/2023 17:57 WG1998813
MW-7R L1580131-05 m&p-Xylenes 137 8.60 40.0 20 02/02/2023 17:57 WG1998813
MW-10 L1580131-08 Di-isopropyl ether 0.907 J 0.105 1.00 1 02/02/2023 14:58 WG1998813
MW-10 L1580131-08 Methyl tert-butyl ether 24.5 0.101 1.00 1 02/02/2023 14:58 WG1998813
VEW-1 L1580131-09 Di-isopropyl ether 0.118 J 0.105 1.00 1 02/02/2023 15:18 WG1998813
VEW-1 L1580131-09 Methyl tert-butyl ether 5.32 0.101 1.00 1 02/02/2023 15:18 WG1998813
SW-1 L1580131-10 Di-isopropyl ether 3.24 0.105 1.00 1 02/02/2023 15:38 WG1998813
SW-1 L1580131-10 Methyl tert-butyl ether 0.757 J 0.101 1.00 1 02/02/2023 15:38 WG1998813
FIELD BLANK L1580131-11 Acetone 12.9 J 11.3 50.0 1 01/31/2023 23:04 WG1997802
FIELD BLANK L1580131-11 2-Butanone (MEK)1.61 J 1.19 10.0 1 01/31/2023 23:04 WG1997802
FIELD BLANK L1580131-11 Methylene Chloride 3.62 J 0.430 5.00 1 01/31/2023 23:04 WG1997802
1 Cp
2Tc
3Ss
4Cn
5Ds
6Sr
7Qc
8Gl
9Al
10Sc
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SAMPLE RESULTS - 01
L1580131
MW-2
Collected date/time: 01/24/23 14:35
Volatile Organic Compounds (GC/MS) by Method 6200B-2011
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
Acetone U 5650 25000 500 02/02/2023 17:17 WG1998813
Acrolein U 1270 25000 500 02/02/2023 17:17 WG1998813
Acrylonitrile U 336 5000 500 02/02/2023 17:17 WG1998813
Benzene 15500 47.1 500 500 02/02/2023 17:17 WG1998813
Bromobenzene U 59.0 500 500 02/02/2023 17:17 WG1998813
Bromodichloromethane U 68.0 500 500 02/02/2023 17:17 WG1998813
Bromoform U 64.5 500 500 02/02/2023 17:17 WG1998813
Bromomethane U 303 2500 500 02/02/2023 17:17 WG1998813
n-Butylbenzene U 78.5 500 500 02/02/2023 17:17 WG1998813
sec-Butylbenzene U 62.5 500 500 02/02/2023 17:17 WG1998813
tert-Butylbenzene U 63.5 500 500 02/02/2023 17:17 WG1998813
Carbon tetrachloride U 64.0 500 500 02/02/2023 17:17 WG1998813
Chlorobenzene U 58.0 500 500 02/02/2023 17:17 WG1998813
Chlorodibromomethane U 70.0 500 500 02/02/2023 17:17 WG1998813
Chloroethane U 96.0 2500 500 02/02/2023 17:17 WG1998813
Chloroform U 55.5 2500 500 02/02/2023 17:17 WG1998813
Chloromethane U 480 1250 500 02/02/2023 17:17 WG1998813
2-Chlorotoluene U 53.0 500 500 02/02/2023 17:17 WG1998813
4-Chlorotoluene U 57.0 500 500 02/02/2023 17:17 WG1998813
1,2-Dibromo-3-Chloropropane U 138 2500 500 02/02/2023 17:17 WG1998813
1,2-Dibromoethane U 63.0 500 500 02/02/2023 17:17 WG1998813
Dibromomethane U 61.0 500 500 02/02/2023 17:17 WG1998813
1,2-Dichlorobenzene U 53.5 500 500 02/02/2023 17:17 WG1998813
1,3-Dichlorobenzene U 55.0 500 500 02/02/2023 17:17 WG1998813
1,4-Dichlorobenzene U 60.0 500 500 02/02/2023 17:17 WG1998813
Dichlorodifluoromethane U 187 2500 500 02/02/2023 17:17 WG1998813
1,1-Dichloroethane U 50.0 500 500 02/02/2023 17:17 WG1998813
1,2-Dichloroethane U 40.9 500 500 02/02/2023 17:17 WG1998813
1,1-Dichloroethene U 94.0 500 500 02/02/2023 17:17 WG1998813
cis-1,2-Dichloroethene U 63.0 500 500 02/02/2023 17:17 WG1998813
trans-1,2-Dichloroethene U 74.5 500 500 02/02/2023 17:17 WG1998813
1,2-Dichloropropane U 74.5 500 500 02/02/2023 17:17 WG1998813
1,1-Dichloropropene U 71.0 500 500 02/02/2023 17:17 WG1998813
1,3-Dichloropropane U 55.0 500 500 02/02/2023 17:17 WG1998813
2,2-Dichloropropane U 80.5 500 500 02/02/2023 17:17 WG1998813
Di-isopropyl ether 589 52.5 500 500 02/02/2023 17:17 WG1998813
Ethylbenzene 2340 68.5 500 500 02/02/2023 17:17 WG1998813
Hexachloro-1,3-butadiene U 169 500 500 02/02/2023 17:17 WG1998813
Isopropylbenzene 73.8 J 52.5 500 500 02/02/2023 17:17 WG1998813
p-Isopropyltoluene U 60.0 500 500 02/02/2023 17:17 WG1998813
2-Butanone (MEK)U 595 5000 500 02/02/2023 17:17 WG1998813
Methylene Chloride U 215 2500 500 02/02/2023 17:17 WG1998813
4-Methyl-2-pentanone (MIBK)U 239 5000 500 02/02/2023 17:17 WG1998813
Methyl tert-butyl ether 12000 50.5 500 500 02/02/2023 17:17 WG1998813
Naphthalene 809 J 500 2500 500 02/02/2023 17:17 WG1998813
n-Propylbenzene 271 J 49.7 500 500 02/02/2023 17:17 WG1998813
Styrene 60.9 J 59.0 500 500 02/02/2023 17:17 WG1998813
1,1,1,2-Tetrachloroethane U 73.5 500 500 02/02/2023 17:17 WG1998813
1,1,2,2-Tetrachloroethane U 66.5 500 500 02/02/2023 17:17 WG1998813
Tetrachloroethene U 150 500 500 02/02/2023 17:17 WG1998813
Toluene 17900 139 500 500 02/02/2023 17:17 WG1998813
1,2,3-Trichlorobenzene U 115 500 500 02/02/2023 17:17 WG1998813
1,2,4-Trichlorobenzene U 241 500 500 02/02/2023 17:17 WG1998813
1,1,1-Trichloroethane U 74.5 500 500 02/02/2023 17:17 WG1998813
1,1,2-Trichloroethane U 79.0 500 500 02/02/2023 17:17 WG1998813
Trichloroethene U 95.0 500 500 02/02/2023 17:17 WG1998813
1 Cp
2Tc
3Ss
4Cn
5Ds
6Sr
7Qc
8Gl
9Al
10Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC SLC1806802 L1580131 02/03/23 11:37 7 of 40
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC SLC1806802 L1580131 02/03/23 18:03 7 of 40
SAMPLE RESULTS - 01
L1580131
MW-2
Collected date/time: 01/24/23 14:35
Volatile Organic Compounds (GC/MS) by Method 6200B-2011
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
Trichlorofluoromethane U 80.0 2500 500 02/02/2023 17:17 WG1998813
1,2,3-Trichloropropane U 119 1250 500 02/02/2023 17:17 WG1998813
1,2,4-Trimethylbenzene 2920 161 500 500 02/02/2023 17:17 WG1998813
1,3,5-Trimethylbenzene 777 52.0 500 500 02/02/2023 17:17 WG1998813
Vinyl chloride U 117 500 500 02/02/2023 17:17 WG1998813
o-Xylene 4490 87.0 500 500 02/02/2023 17:17 WG1998813
m&p-Xylenes 7390 215 1000 500 02/02/2023 17:17 WG1998813
(S) Toluene-d8 93.7 80.0-120 02/02/2023 17:17 WG1998813
(S) 4-Bromofluorobenzene 85.2 77.0-126 02/02/2023 17:17 WG1998813
(S) 1,2-Dichloroethane-d4 106 70.0-130 02/02/2023 17:17 WG1998813
1 Cp
2Tc
3Ss
4Cn
5Ds
6Sr
7Qc
8Gl
9Al
10Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC SLC1806802 L1580131 02/03/23 11:37 8 of 40
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC SLC1806802 L1580131 02/03/23 18:03 8 of 40
SAMPLE RESULTS - 02
L1580131
MW-3
Collected date/time: 01/24/23 14:05
Volatile Organic Compounds (GC/MS) by Method 6200B-2011
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
Acetone U 226 1000 20 02/02/2023 17:37 WG1998813
Acrolein U 50.8 1000 20 02/02/2023 17:37 WG1998813
Acrylonitrile U 13.4 200 20 02/02/2023 17:37 WG1998813
Benzene 146 1.88 20.0 20 02/02/2023 17:37 WG1998813
Bromobenzene U 2.36 20.0 20 02/02/2023 17:37 WG1998813
Bromodichloromethane U 2.72 20.0 20 02/02/2023 17:37 WG1998813
Bromoform U 2.58 20.0 20 02/02/2023 17:37 WG1998813
Bromomethane U 12.1 100 20 02/02/2023 17:37 WG1998813
n-Butylbenzene U 3.14 20.0 20 02/02/2023 17:37 WG1998813
sec-Butylbenzene U 2.50 20.0 20 02/02/2023 17:37 WG1998813
tert-Butylbenzene U 2.54 20.0 20 02/02/2023 17:37 WG1998813
Carbon tetrachloride U 2.56 20.0 20 02/02/2023 17:37 WG1998813
Chlorobenzene U 2.32 20.0 20 02/02/2023 17:37 WG1998813
Chlorodibromomethane U 2.80 20.0 20 02/02/2023 17:37 WG1998813
Chloroethane U 3.84 100 20 02/02/2023 17:37 WG1998813
Chloroform U 2.22 100 20 02/02/2023 17:37 WG1998813
Chloromethane U 19.2 50.0 20 02/02/2023 17:37 WG1998813
2-Chlorotoluene U 2.12 20.0 20 02/02/2023 17:37 WG1998813
4-Chlorotoluene U 2.28 20.0 20 02/02/2023 17:37 WG1998813
1,2-Dibromo-3-Chloropropane U 5.52 100 20 02/02/2023 17:37 WG1998813
1,2-Dibromoethane U 2.52 20.0 20 02/02/2023 17:37 WG1998813
Dibromomethane U 2.44 20.0 20 02/02/2023 17:37 WG1998813
1,2-Dichlorobenzene U 2.14 20.0 20 02/02/2023 17:37 WG1998813
1,3-Dichlorobenzene U 2.20 20.0 20 02/02/2023 17:37 WG1998813
1,4-Dichlorobenzene U 2.40 20.0 20 02/02/2023 17:37 WG1998813
Dichlorodifluoromethane U 7.48 100 20 02/02/2023 17:37 WG1998813
1,1-Dichloroethane U 2.00 20.0 20 02/02/2023 17:37 WG1998813
1,2-Dichloroethane U 1.64 20.0 20 02/02/2023 17:37 WG1998813
1,1-Dichloroethene U 3.76 20.0 20 02/02/2023 17:37 WG1998813
cis-1,2-Dichloroethene U 2.52 20.0 20 02/02/2023 17:37 WG1998813
trans-1,2-Dichloroethene U 2.98 20.0 20 02/02/2023 17:37 WG1998813
1,2-Dichloropropane U 2.98 20.0 20 02/02/2023 17:37 WG1998813
1,1-Dichloropropene U 2.84 20.0 20 02/02/2023 17:37 WG1998813
1,3-Dichloropropane U 2.20 20.0 20 02/02/2023 17:37 WG1998813
2,2-Dichloropropane U 3.22 20.0 20 02/02/2023 17:37 WG1998813
Di-isopropyl ether U 2.10 20.0 20 02/02/2023 17:37 WG1998813
Ethylbenzene 36.2 2.74 20.0 20 02/02/2023 17:37 WG1998813
Hexachloro-1,3-butadiene U 6.74 20.0 20 02/02/2023 17:37 WG1998813
Isopropylbenzene U 2.10 20.0 20 02/02/2023 17:37 WG1998813
p-Isopropyltoluene U 2.40 20.0 20 02/02/2023 17:37 WG1998813
2-Butanone (MEK)U 23.8 200 20 02/02/2023 17:37 WG1998813
Methylene Chloride U 8.60 100 20 02/02/2023 17:37 WG1998813
4-Methyl-2-pentanone (MIBK)U 9.56 200 20 02/02/2023 17:37 WG1998813
Methyl tert-butyl ether 10.6 J 2.02 20.0 20 02/02/2023 17:37 WG1998813
Naphthalene U 20.0 100 20 02/02/2023 17:37 WG1998813
n-Propylbenzene 5.61 J 1.99 20.0 20 02/02/2023 17:37 WG1998813
Styrene U 2.36 20.0 20 02/02/2023 17:37 WG1998813
1,1,1,2-Tetrachloroethane U 2.94 20.0 20 02/02/2023 17:37 WG1998813
1,1,2,2-Tetrachloroethane U 2.66 20.0 20 02/02/2023 17:37 WG1998813
Tetrachloroethene U 6.00 20.0 20 02/02/2023 17:37 WG1998813
Toluene 67.9 5.56 20.0 20 02/02/2023 17:37 WG1998813
1,2,3-Trichlorobenzene U 4.60 20.0 20 02/02/2023 17:37 WG1998813
1,2,4-Trichlorobenzene U 9.62 20.0 20 02/02/2023 17:37 WG1998813
1,1,1-Trichloroethane U 2.98 20.0 20 02/02/2023 17:37 WG1998813
1,1,2-Trichloroethane U 3.16 20.0 20 02/02/2023 17:37 WG1998813
Trichloroethene U 3.80 20.0 20 02/02/2023 17:37 WG1998813
1 Cp
2Tc
3Ss
4Cn
5Ds
6Sr
7Qc
8Gl
9Al
10Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC SLC1806802 L1580131 02/03/23 11:37 9 of 40
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC SLC1806802 L1580131 02/03/23 18:03 9 of 40
SAMPLE RESULTS - 02
L1580131
MW-3
Collected date/time: 01/24/23 14:05
Volatile Organic Compounds (GC/MS) by Method 6200B-2011
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
Trichlorofluoromethane U 3.20 100 20 02/02/2023 17:37 WG1998813
1,2,3-Trichloropropane U 4.74 50.0 20 02/02/2023 17:37 WG1998813
1,2,4-Trimethylbenzene 42.3 6.44 20.0 20 02/02/2023 17:37 WG1998813
1,3,5-Trimethylbenzene 23.2 2.08 20.0 20 02/02/2023 17:37 WG1998813
Vinyl chloride U 4.68 20.0 20 02/02/2023 17:37 WG1998813
o-Xylene 19.3 J 3.48 20.0 20 02/02/2023 17:37 WG1998813
m&p-Xylenes 164 8.60 40.0 20 02/02/2023 17:37 WG1998813
(S) Toluene-d8 93.9 80.0-120 02/02/2023 17:37 WG1998813
(S) 4-Bromofluorobenzene 85.4 77.0-126 02/02/2023 17:37 WG1998813
(S) 1,2-Dichloroethane-d4 109 70.0-130 02/02/2023 17:37 WG1998813
1 Cp
2Tc
3Ss
4Cn
5Ds
6Sr
7Qc
8Gl
9Al
10Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC SLC1806802 L1580131 02/03/23 11:37 10 of 40
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC SLC1806802 L1580131 02/03/23 18:03 10 of 40
SAMPLE RESULTS - 03
L1580131
MW-4
Collected date/time: 01/24/23 12:30
Volatile Organic Compounds (GC/MS) by Method 6200B-2011
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
Acetone U 11.3 50.0 1 02/02/2023 13:58 WG1998813
Acrolein U 2.54 50.0 1 02/02/2023 13:58 WG1998813
Acrylonitrile U 0.671 10.0 1 02/02/2023 13:58 WG1998813
Benzene U 0.0941 1.00 1 02/02/2023 13:58 WG1998813
Bromobenzene U 0.118 1.00 1 02/02/2023 13:58 WG1998813
Bromodichloromethane U 0.136 1.00 1 02/02/2023 13:58 WG1998813
Bromoform U 0.129 1.00 1 02/02/2023 13:58 WG1998813
Bromomethane U 0.605 5.00 1 02/02/2023 13:58 WG1998813
n-Butylbenzene U 0.157 1.00 1 02/02/2023 13:58 WG1998813
sec-Butylbenzene U 0.125 1.00 1 02/02/2023 13:58 WG1998813
tert-Butylbenzene U 0.127 1.00 1 02/02/2023 13:58 WG1998813
Carbon tetrachloride U 0.128 1.00 1 02/02/2023 13:58 WG1998813
Chlorobenzene U 0.116 1.00 1 02/02/2023 13:58 WG1998813
Chlorodibromomethane U 0.140 1.00 1 02/02/2023 13:58 WG1998813
Chloroethane U 0.192 5.00 1 02/02/2023 13:58 WG1998813
Chloroform U 0.111 5.00 1 02/02/2023 13:58 WG1998813
Chloromethane U 0.960 2.50 1 02/02/2023 13:58 WG1998813
2-Chlorotoluene U 0.106 1.00 1 02/02/2023 13:58 WG1998813
4-Chlorotoluene U 0.114 1.00 1 02/02/2023 13:58 WG1998813
1,2-Dibromo-3-Chloropropane U 0.276 5.00 1 02/02/2023 13:58 WG1998813
1,2-Dibromoethane U 0.126 1.00 1 02/02/2023 13:58 WG1998813
Dibromomethane U 0.122 1.00 1 02/02/2023 13:58 WG1998813
1,2-Dichlorobenzene U 0.107 1.00 1 02/02/2023 13:58 WG1998813
1,3-Dichlorobenzene U 0.110 1.00 1 02/02/2023 13:58 WG1998813
1,4-Dichlorobenzene U 0.120 1.00 1 02/02/2023 13:58 WG1998813
Dichlorodifluoromethane U 0.374 5.00 1 02/02/2023 13:58 WG1998813
1,1-Dichloroethane U 0.100 1.00 1 02/02/2023 13:58 WG1998813
1,2-Dichloroethane U 0.0819 1.00 1 02/02/2023 13:58 WG1998813
1,1-Dichloroethene U 0.188 1.00 1 02/02/2023 13:58 WG1998813
cis-1,2-Dichloroethene U 0.126 1.00 1 02/02/2023 13:58 WG1998813
trans-1,2-Dichloroethene U 0.149 1.00 1 02/02/2023 13:58 WG1998813
1,2-Dichloropropane U 0.149 1.00 1 02/02/2023 13:58 WG1998813
1,1-Dichloropropene U 0.142 1.00 1 02/02/2023 13:58 WG1998813
1,3-Dichloropropane U 0.110 1.00 1 02/02/2023 13:58 WG1998813
2,2-Dichloropropane U 0.161 1.00 1 02/02/2023 13:58 WG1998813
Di-isopropyl ether U 0.105 1.00 1 02/02/2023 13:58 WG1998813
Ethylbenzene U 0.137 1.00 1 02/02/2023 13:58 WG1998813
Hexachloro-1,3-butadiene U 0.337 1.00 1 02/02/2023 13:58 WG1998813
Isopropylbenzene U 0.105 1.00 1 02/02/2023 13:58 WG1998813
p-Isopropyltoluene U 0.120 1.00 1 02/02/2023 13:58 WG1998813
2-Butanone (MEK)U 1.19 10.0 1 02/02/2023 13:58 WG1998813
Methylene Chloride U 0.430 5.00 1 02/02/2023 13:58 WG1998813
4-Methyl-2-pentanone (MIBK)U 0.478 10.0 1 02/02/2023 13:58 WG1998813
Methyl tert-butyl ether U 0.101 1.00 1 02/02/2023 13:58 WG1998813
Naphthalene U 1.00 5.00 1 02/02/2023 13:58 WG1998813
n-Propylbenzene U 0.0993 1.00 1 02/02/2023 13:58 WG1998813
Styrene U 0.118 1.00 1 02/02/2023 13:58 WG1998813
1,1,1,2-Tetrachloroethane U 0.147 1.00 1 02/02/2023 13:58 WG1998813
1,1,2,2-Tetrachloroethane U 0.133 1.00 1 02/02/2023 13:58 WG1998813
Tetrachloroethene U 0.300 1.00 1 02/02/2023 13:58 WG1998813
Toluene U 0.278 1.00 1 02/02/2023 13:58 WG1998813
1,2,3-Trichlorobenzene U 0.230 1.00 1 02/02/2023 13:58 WG1998813
1,2,4-Trichlorobenzene U 0.481 1.00 1 02/02/2023 13:58 WG1998813
1,1,1-Trichloroethane U 0.149 1.00 1 02/02/2023 13:58 WG1998813
1,1,2-Trichloroethane U 0.158 1.00 1 02/02/2023 13:58 WG1998813
Trichloroethene U 0.190 1.00 1 02/02/2023 13:58 WG1998813
1 Cp
2Tc
3Ss
4Cn
5Ds
6Sr
7Qc
8Gl
9Al
10Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC SLC1806802 L1580131 02/03/23 11:37 11 of 40
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC SLC1806802 L1580131 02/03/23 18:03 11 of 40
SAMPLE RESULTS - 03
L1580131
MW-4
Collected date/time: 01/24/23 12:30
Volatile Organic Compounds (GC/MS) by Method 6200B-2011
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
Trichlorofluoromethane U 0.160 5.00 1 02/02/2023 13:58 WG1998813
1,2,3-Trichloropropane U 0.237 2.50 1 02/02/2023 13:58 WG1998813
1,2,4-Trimethylbenzene U 0.322 1.00 1 02/02/2023 13:58 WG1998813
1,3,5-Trimethylbenzene U 0.104 1.00 1 02/02/2023 13:58 WG1998813
Vinyl chloride U 0.234 1.00 1 02/02/2023 13:58 WG1998813
o-Xylene U 0.174 1.00 1 02/02/2023 13:58 WG1998813
m&p-Xylenes U 0.430 2.00 1 02/02/2023 13:58 WG1998813
(S) Toluene-d8 93.6 80.0-120 02/02/2023 13:58 WG1998813
(S) 4-Bromofluorobenzene 82.5 77.0-126 02/02/2023 13:58 WG1998813
(S) 1,2-Dichloroethane-d4 105 70.0-130 02/02/2023 13:58 WG1998813
1 Cp
2Tc
3Ss
4Cn
5Ds
6Sr
7Qc
8Gl
9Al
10Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC SLC1806802 L1580131 02/03/23 11:37 12 of 40
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC SLC1806802 L1580131 02/03/23 18:03 12 of 40
SAMPLE RESULTS - 04
L1580131
MW-5
Collected date/time: 01/24/23 11:45
Volatile Organic Compounds (GC/MS) by Method 6200B-2011
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
Acetone U 11.3 50.0 1 02/02/2023 14:18 WG1998813
Acrolein U 2.54 50.0 1 02/02/2023 14:18 WG1998813
Acrylonitrile U 0.671 10.0 1 02/02/2023 14:18 WG1998813
Benzene U 0.0941 1.00 1 02/02/2023 14:18 WG1998813
Bromobenzene U 0.118 1.00 1 02/02/2023 14:18 WG1998813
Bromodichloromethane U 0.136 1.00 1 02/02/2023 14:18 WG1998813
Bromoform U 0.129 1.00 1 02/02/2023 14:18 WG1998813
Bromomethane U 0.605 5.00 1 02/02/2023 14:18 WG1998813
n-Butylbenzene U 0.157 1.00 1 02/02/2023 14:18 WG1998813
sec-Butylbenzene U 0.125 1.00 1 02/02/2023 14:18 WG1998813
tert-Butylbenzene U 0.127 1.00 1 02/02/2023 14:18 WG1998813
Carbon tetrachloride U 0.128 1.00 1 02/02/2023 14:18 WG1998813
Chlorobenzene U 0.116 1.00 1 02/02/2023 14:18 WG1998813
Chlorodibromomethane U 0.140 1.00 1 02/02/2023 14:18 WG1998813
Chloroethane U 0.192 5.00 1 02/02/2023 14:18 WG1998813
Chloroform U 0.111 5.00 1 02/02/2023 14:18 WG1998813
Chloromethane U 0.960 2.50 1 02/02/2023 14:18 WG1998813
2-Chlorotoluene U 0.106 1.00 1 02/02/2023 14:18 WG1998813
4-Chlorotoluene U 0.114 1.00 1 02/02/2023 14:18 WG1998813
1,2-Dibromo-3-Chloropropane U 0.276 5.00 1 02/02/2023 14:18 WG1998813
1,2-Dibromoethane U 0.126 1.00 1 02/02/2023 14:18 WG1998813
Dibromomethane U 0.122 1.00 1 02/02/2023 14:18 WG1998813
1,2-Dichlorobenzene U 0.107 1.00 1 02/02/2023 14:18 WG1998813
1,3-Dichlorobenzene U 0.110 1.00 1 02/02/2023 14:18 WG1998813
1,4-Dichlorobenzene U 0.120 1.00 1 02/02/2023 14:18 WG1998813
Dichlorodifluoromethane U 0.374 5.00 1 02/02/2023 14:18 WG1998813
1,1-Dichloroethane U 0.100 1.00 1 02/02/2023 14:18 WG1998813
1,2-Dichloroethane U 0.0819 1.00 1 02/02/2023 14:18 WG1998813
1,1-Dichloroethene U 0.188 1.00 1 02/02/2023 14:18 WG1998813
cis-1,2-Dichloroethene U 0.126 1.00 1 02/02/2023 14:18 WG1998813
trans-1,2-Dichloroethene U 0.149 1.00 1 02/02/2023 14:18 WG1998813
1,2-Dichloropropane U 0.149 1.00 1 02/02/2023 14:18 WG1998813
1,1-Dichloropropene U 0.142 1.00 1 02/02/2023 14:18 WG1998813
1,3-Dichloropropane U 0.110 1.00 1 02/02/2023 14:18 WG1998813
2,2-Dichloropropane U 0.161 1.00 1 02/02/2023 14:18 WG1998813
Di-isopropyl ether U 0.105 1.00 1 02/02/2023 14:18 WG1998813
Ethylbenzene U 0.137 1.00 1 02/02/2023 14:18 WG1998813
Hexachloro-1,3-butadiene U 0.337 1.00 1 02/02/2023 14:18 WG1998813
Isopropylbenzene U 0.105 1.00 1 02/02/2023 14:18 WG1998813
p-Isopropyltoluene U 0.120 1.00 1 02/02/2023 14:18 WG1998813
2-Butanone (MEK)U 1.19 10.0 1 02/02/2023 14:18 WG1998813
Methylene Chloride U 0.430 5.00 1 02/02/2023 14:18 WG1998813
4-Methyl-2-pentanone (MIBK)U 0.478 10.0 1 02/02/2023 14:18 WG1998813
Methyl tert-butyl ether U 0.101 1.00 1 02/02/2023 14:18 WG1998813
Naphthalene U 1.00 5.00 1 02/02/2023 14:18 WG1998813
n-Propylbenzene U 0.0993 1.00 1 02/02/2023 14:18 WG1998813
Styrene U 0.118 1.00 1 02/02/2023 14:18 WG1998813
1,1,1,2-Tetrachloroethane U 0.147 1.00 1 02/02/2023 14:18 WG1998813
1,1,2,2-Tetrachloroethane U 0.133 1.00 1 02/02/2023 14:18 WG1998813
Tetrachloroethene U 0.300 1.00 1 02/02/2023 14:18 WG1998813
Toluene U 0.278 1.00 1 02/02/2023 14:18 WG1998813
1,2,3-Trichlorobenzene U 0.230 1.00 1 02/02/2023 14:18 WG1998813
1,2,4-Trichlorobenzene U 0.481 1.00 1 02/02/2023 14:18 WG1998813
1,1,1-Trichloroethane U 0.149 1.00 1 02/02/2023 14:18 WG1998813
1,1,2-Trichloroethane U 0.158 1.00 1 02/02/2023 14:18 WG1998813
Trichloroethene U 0.190 1.00 1 02/02/2023 14:18 WG1998813
1 Cp
2Tc
3Ss
4Cn
5Ds
6Sr
7Qc
8Gl
9Al
10Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC SLC1806802 L1580131 02/03/23 11:37 13 of 40
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC SLC1806802 L1580131 02/03/23 18:03 13 of 40
SAMPLE RESULTS - 04
L1580131
MW-5
Collected date/time: 01/24/23 11:45
Volatile Organic Compounds (GC/MS) by Method 6200B-2011
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
Trichlorofluoromethane U 0.160 5.00 1 02/02/2023 14:18 WG1998813
1,2,3-Trichloropropane U 0.237 2.50 1 02/02/2023 14:18 WG1998813
1,2,4-Trimethylbenzene U 0.322 1.00 1 02/02/2023 14:18 WG1998813
1,3,5-Trimethylbenzene U 0.104 1.00 1 02/02/2023 14:18 WG1998813
Vinyl chloride U 0.234 1.00 1 02/02/2023 14:18 WG1998813
o-Xylene U 0.174 1.00 1 02/02/2023 14:18 WG1998813
m&p-Xylenes U 0.430 2.00 1 02/02/2023 14:18 WG1998813
(S) Toluene-d8 93.6 80.0-120 02/02/2023 14:18 WG1998813
(S) 4-Bromofluorobenzene 84.7 77.0-126 02/02/2023 14:18 WG1998813
(S) 1,2-Dichloroethane-d4 105 70.0-130 02/02/2023 14:18 WG1998813
1 Cp
2Tc
3Ss
4Cn
5Ds
6Sr
7Qc
8Gl
9Al
10Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC SLC1806802 L1580131 02/03/23 11:37 14 of 40
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC SLC1806802 L1580131 02/03/23 18:03 14 of 40
SAMPLE RESULTS - 05
L1580131
MW-7R
Collected date/time: 01/24/23 13:50
Volatile Organic Compounds (GC/MS) by Method 6200B-2011
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
Acetone U 226 1000 20 02/02/2023 17:57 WG1998813
Acrolein U 50.8 1000 20 02/02/2023 17:57 WG1998813
Acrylonitrile U 13.4 200 20 02/02/2023 17:57 WG1998813
Benzene 75.5 1.88 20.0 20 02/02/2023 17:57 WG1998813
Bromobenzene U 2.36 20.0 20 02/02/2023 17:57 WG1998813
Bromodichloromethane U 2.72 20.0 20 02/02/2023 17:57 WG1998813
Bromoform U 2.58 20.0 20 02/02/2023 17:57 WG1998813
Bromomethane U 12.1 100 20 02/02/2023 17:57 WG1998813
n-Butylbenzene 4.17 J 3.14 20.0 20 02/02/2023 17:57 WG1998813
sec-Butylbenzene U 2.50 20.0 20 02/02/2023 17:57 WG1998813
tert-Butylbenzene U 2.54 20.0 20 02/02/2023 17:57 WG1998813
Carbon tetrachloride U 2.56 20.0 20 02/02/2023 17:57 WG1998813
Chlorobenzene U 2.32 20.0 20 02/02/2023 17:57 WG1998813
Chlorodibromomethane U 2.80 20.0 20 02/02/2023 17:57 WG1998813
Chloroethane U 3.84 100 20 02/02/2023 17:57 WG1998813
Chloroform U 2.22 100 20 02/02/2023 17:57 WG1998813
Chloromethane U 19.2 50.0 20 02/02/2023 17:57 WG1998813
2-Chlorotoluene U 2.12 20.0 20 02/02/2023 17:57 WG1998813
4-Chlorotoluene U 2.28 20.0 20 02/02/2023 17:57 WG1998813
1,2-Dibromo-3-Chloropropane U 5.52 100 20 02/02/2023 17:57 WG1998813
1,2-Dibromoethane U 2.52 20.0 20 02/02/2023 17:57 WG1998813
Dibromomethane U 2.44 20.0 20 02/02/2023 17:57 WG1998813
1,2-Dichlorobenzene U 2.14 20.0 20 02/02/2023 17:57 WG1998813
1,3-Dichlorobenzene U 2.20 20.0 20 02/02/2023 17:57 WG1998813
1,4-Dichlorobenzene U 2.40 20.0 20 02/02/2023 17:57 WG1998813
Dichlorodifluoromethane U 7.48 100 20 02/02/2023 17:57 WG1998813
1,1-Dichloroethane U 2.00 20.0 20 02/02/2023 17:57 WG1998813
1,2-Dichloroethane U 1.64 20.0 20 02/02/2023 17:57 WG1998813
1,1-Dichloroethene U 3.76 20.0 20 02/02/2023 17:57 WG1998813
cis-1,2-Dichloroethene U 2.52 20.0 20 02/02/2023 17:57 WG1998813
trans-1,2-Dichloroethene U 2.98 20.0 20 02/02/2023 17:57 WG1998813
1,2-Dichloropropane U 2.98 20.0 20 02/02/2023 17:57 WG1998813
1,1-Dichloropropene U 2.84 20.0 20 02/02/2023 17:57 WG1998813
1,3-Dichloropropane U 2.20 20.0 20 02/02/2023 17:57 WG1998813
2,2-Dichloropropane U 3.22 20.0 20 02/02/2023 17:57 WG1998813
Di-isopropyl ether U 2.10 20.0 20 02/02/2023 17:57 WG1998813
Ethylbenzene 11.7 J 2.74 20.0 20 02/02/2023 17:57 WG1998813
Hexachloro-1,3-butadiene U 6.74 20.0 20 02/02/2023 17:57 WG1998813
Isopropylbenzene 10.1 J 2.10 20.0 20 02/02/2023 17:57 WG1998813
p-Isopropyltoluene U 2.40 20.0 20 02/02/2023 17:57 WG1998813
2-Butanone (MEK)U 23.8 200 20 02/02/2023 17:57 WG1998813
Methylene Chloride U 8.60 100 20 02/02/2023 17:57 WG1998813
4-Methyl-2-pentanone (MIBK)U 9.56 200 20 02/02/2023 17:57 WG1998813
Methyl tert-butyl ether 27.7 2.02 20.0 20 02/02/2023 17:57 WG1998813
Naphthalene 81.9 J 20.0 100 20 02/02/2023 17:57 WG1998813
n-Propylbenzene 34.6 1.99 20.0 20 02/02/2023 17:57 WG1998813
Styrene 3.02 J 2.36 20.0 20 02/02/2023 17:57 WG1998813
1,1,1,2-Tetrachloroethane U 2.94 20.0 20 02/02/2023 17:57 WG1998813
1,1,2,2-Tetrachloroethane U 2.66 20.0 20 02/02/2023 17:57 WG1998813
Tetrachloroethene U 6.00 20.0 20 02/02/2023 17:57 WG1998813
Toluene 10.5 J 5.56 20.0 20 02/02/2023 17:57 WG1998813
1,2,3-Trichlorobenzene U 4.60 20.0 20 02/02/2023 17:57 WG1998813
1,2,4-Trichlorobenzene U 9.62 20.0 20 02/02/2023 17:57 WG1998813
1,1,1-Trichloroethane U 2.98 20.0 20 02/02/2023 17:57 WG1998813
1,1,2-Trichloroethane U 3.16 20.0 20 02/02/2023 17:57 WG1998813
Trichloroethene U 3.80 20.0 20 02/02/2023 17:57 WG1998813
1 Cp
2Tc
3Ss
4Cn
5Ds
6Sr
7Qc
8Gl
9Al
10Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC SLC1806802 L1580131 02/03/23 11:37 15 of 40
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC SLC1806802 L1580131 02/03/23 18:03 15 of 40
SAMPLE RESULTS - 05
L1580131
MW-7R
Collected date/time: 01/24/23 13:50
Volatile Organic Compounds (GC/MS) by Method 6200B-2011
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
Trichlorofluoromethane U 3.20 100 20 02/02/2023 17:57 WG1998813
1,2,3-Trichloropropane U 4.74 50.0 20 02/02/2023 17:57 WG1998813
1,2,4-Trimethylbenzene 91.1 6.44 20.0 20 02/02/2023 17:57 WG1998813
1,3,5-Trimethylbenzene 45.9 2.08 20.0 20 02/02/2023 17:57 WG1998813
Vinyl chloride U 4.68 20.0 20 02/02/2023 17:57 WG1998813
o-Xylene 4.45 J 3.48 20.0 20 02/02/2023 17:57 WG1998813
m&p-Xylenes 137 8.60 40.0 20 02/02/2023 17:57 WG1998813
(S) Toluene-d8 93.7 80.0-120 02/02/2023 17:57 WG1998813
(S) 4-Bromofluorobenzene 84.2 77.0-126 02/02/2023 17:57 WG1998813
(S) 1,2-Dichloroethane-d4 106 70.0-130 02/02/2023 17:57 WG1998813
1 Cp
2Tc
3Ss
4Cn
5Ds
6Sr
7Qc
8Gl
9Al
10Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC SLC1806802 L1580131 02/03/23 11:37 16 of 40
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC SLC1806802 L1580131 02/03/23 18:03 16 of 40
SAMPLE RESULTS - 06
L1580131
MW-8
Collected date/time: 01/24/23 11:00
Volatile Organic Compounds (GC/MS) by Method 6200B-2011
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
Acetone U 11.3 50.0 1 02/02/2023 14:38 WG1998813
Acrolein U 2.54 50.0 1 02/02/2023 14:38 WG1998813
Acrylonitrile U 0.671 10.0 1 02/02/2023 14:38 WG1998813
Benzene U 0.0941 1.00 1 02/02/2023 14:38 WG1998813
Bromobenzene U 0.118 1.00 1 02/02/2023 14:38 WG1998813
Bromodichloromethane U 0.136 1.00 1 02/02/2023 14:38 WG1998813
Bromoform U 0.129 1.00 1 02/02/2023 14:38 WG1998813
Bromomethane U 0.605 5.00 1 02/02/2023 14:38 WG1998813
n-Butylbenzene U 0.157 1.00 1 02/02/2023 14:38 WG1998813
sec-Butylbenzene U 0.125 1.00 1 02/02/2023 14:38 WG1998813
tert-Butylbenzene U 0.127 1.00 1 02/02/2023 14:38 WG1998813
Carbon tetrachloride U 0.128 1.00 1 02/02/2023 14:38 WG1998813
Chlorobenzene U 0.116 1.00 1 02/02/2023 14:38 WG1998813
Chlorodibromomethane U 0.140 1.00 1 02/02/2023 14:38 WG1998813
Chloroethane U 0.192 5.00 1 02/02/2023 14:38 WG1998813
Chloroform U 0.111 5.00 1 02/02/2023 14:38 WG1998813
Chloromethane U 0.960 2.50 1 02/02/2023 14:38 WG1998813
2-Chlorotoluene U 0.106 1.00 1 02/02/2023 14:38 WG1998813
4-Chlorotoluene U 0.114 1.00 1 02/02/2023 14:38 WG1998813
1,2-Dibromo-3-Chloropropane U 0.276 5.00 1 02/02/2023 14:38 WG1998813
1,2-Dibromoethane U 0.126 1.00 1 02/02/2023 14:38 WG1998813
Dibromomethane U 0.122 1.00 1 02/02/2023 14:38 WG1998813
1,2-Dichlorobenzene U 0.107 1.00 1 02/02/2023 14:38 WG1998813
1,3-Dichlorobenzene U 0.110 1.00 1 02/02/2023 14:38 WG1998813
1,4-Dichlorobenzene U 0.120 1.00 1 02/02/2023 14:38 WG1998813
Dichlorodifluoromethane U 0.374 5.00 1 02/02/2023 14:38 WG1998813
1,1-Dichloroethane U 0.100 1.00 1 02/02/2023 14:38 WG1998813
1,2-Dichloroethane U 0.0819 1.00 1 02/02/2023 14:38 WG1998813
1,1-Dichloroethene U 0.188 1.00 1 02/02/2023 14:38 WG1998813
cis-1,2-Dichloroethene U 0.126 1.00 1 02/02/2023 14:38 WG1998813
trans-1,2-Dichloroethene U 0.149 1.00 1 02/02/2023 14:38 WG1998813
1,2-Dichloropropane U 0.149 1.00 1 02/02/2023 14:38 WG1998813
1,1-Dichloropropene U 0.142 1.00 1 02/02/2023 14:38 WG1998813
1,3-Dichloropropane U 0.110 1.00 1 02/02/2023 14:38 WG1998813
2,2-Dichloropropane U 0.161 1.00 1 02/02/2023 14:38 WG1998813
Di-isopropyl ether U 0.105 1.00 1 02/02/2023 14:38 WG1998813
Ethylbenzene U 0.137 1.00 1 02/02/2023 14:38 WG1998813
Hexachloro-1,3-butadiene U 0.337 1.00 1 02/02/2023 14:38 WG1998813
Isopropylbenzene U 0.105 1.00 1 02/02/2023 14:38 WG1998813
p-Isopropyltoluene U 0.120 1.00 1 02/02/2023 14:38 WG1998813
2-Butanone (MEK)U 1.19 10.0 1 02/02/2023 14:38 WG1998813
Methylene Chloride U 0.430 5.00 1 02/02/2023 14:38 WG1998813
4-Methyl-2-pentanone (MIBK)U 0.478 10.0 1 02/02/2023 14:38 WG1998813
Methyl tert-butyl ether U 0.101 1.00 1 02/02/2023 14:38 WG1998813
Naphthalene U 1.00 5.00 1 02/02/2023 14:38 WG1998813
n-Propylbenzene U 0.0993 1.00 1 02/02/2023 14:38 WG1998813
Styrene U 0.118 1.00 1 02/02/2023 14:38 WG1998813
1,1,1,2-Tetrachloroethane U 0.147 1.00 1 02/02/2023 14:38 WG1998813
1,1,2,2-Tetrachloroethane U 0.133 1.00 1 02/02/2023 14:38 WG1998813
Tetrachloroethene U 0.300 1.00 1 02/02/2023 14:38 WG1998813
Toluene U 0.278 1.00 1 02/02/2023 14:38 WG1998813
1,2,3-Trichlorobenzene U 0.230 1.00 1 02/02/2023 14:38 WG1998813
1,2,4-Trichlorobenzene U 0.481 1.00 1 02/02/2023 14:38 WG1998813
1,1,1-Trichloroethane U 0.149 1.00 1 02/02/2023 14:38 WG1998813
1,1,2-Trichloroethane U 0.158 1.00 1 02/02/2023 14:38 WG1998813
Trichloroethene U 0.190 1.00 1 02/02/2023 14:38 WG1998813
1 Cp
2Tc
3Ss
4Cn
5Ds
6Sr
7Qc
8Gl
9Al
10Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC SLC1806802 L1580131 02/03/23 11:37 17 of 40
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC SLC1806802 L1580131 02/03/23 18:03 17 of 40
SAMPLE RESULTS - 06
L1580131
MW-8
Collected date/time: 01/24/23 11:00
Volatile Organic Compounds (GC/MS) by Method 6200B-2011
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
Trichlorofluoromethane U 0.160 5.00 1 02/02/2023 14:38 WG1998813
1,2,3-Trichloropropane U 0.237 2.50 1 02/02/2023 14:38 WG1998813
1,2,4-Trimethylbenzene U 0.322 1.00 1 02/02/2023 14:38 WG1998813
1,3,5-Trimethylbenzene U 0.104 1.00 1 02/02/2023 14:38 WG1998813
Vinyl chloride U 0.234 1.00 1 02/02/2023 14:38 WG1998813
o-Xylene U 0.174 1.00 1 02/02/2023 14:38 WG1998813
m&p-Xylenes U 0.430 2.00 1 02/02/2023 14:38 WG1998813
(S) Toluene-d8 93.2 80.0-120 02/02/2023 14:38 WG1998813
(S) 4-Bromofluorobenzene 83.9 77.0-126 02/02/2023 14:38 WG1998813
(S) 1,2-Dichloroethane-d4 107 70.0-130 02/02/2023 14:38 WG1998813
1 Cp
2Tc
3Ss
4Cn
5Ds
6Sr
7Qc
8Gl
9Al
10Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC SLC1806802 L1580131 02/03/23 11:37 18 of 40
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC SLC1806802 L1580131 02/03/23 18:03 18 of 40
SAMPLE RESULTS - 07
L1580131
MW-9
Collected date/time: 01/24/23 13:05
Volatile Organic Compounds (GC/MS) by Method 6200B-2011
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
Acetone U 56.5 250 5 02/02/2023 18:17 WG1998813
Acrolein U 12.7 250 5 02/02/2023 18:17 WG1998813
Acrylonitrile U 3.36 50.0 5 02/02/2023 18:17 WG1998813
Benzene U 0.471 5.00 5 02/02/2023 18:17 WG1998813
Bromobenzene U 0.590 5.00 5 02/02/2023 18:17 WG1998813
Bromodichloromethane U 0.680 5.00 5 02/02/2023 18:17 WG1998813
Bromoform U 0.645 5.00 5 02/02/2023 18:17 WG1998813
Bromomethane U 3.03 25.0 5 02/02/2023 18:17 WG1998813
n-Butylbenzene U 0.785 5.00 5 02/02/2023 18:17 WG1998813
sec-Butylbenzene U 0.625 5.00 5 02/02/2023 18:17 WG1998813
tert-Butylbenzene U 0.635 5.00 5 02/02/2023 18:17 WG1998813
Carbon tetrachloride U 0.640 5.00 5 02/02/2023 18:17 WG1998813
Chlorobenzene U 0.580 5.00 5 02/02/2023 18:17 WG1998813
Chlorodibromomethane U 0.700 5.00 5 02/02/2023 18:17 WG1998813
Chloroethane U 0.960 25.0 5 02/02/2023 18:17 WG1998813
Chloroform U 0.555 25.0 5 02/02/2023 18:17 WG1998813
Chloromethane U 4.80 12.5 5 02/02/2023 18:17 WG1998813
2-Chlorotoluene U 0.530 5.00 5 02/02/2023 18:17 WG1998813
4-Chlorotoluene U 0.570 5.00 5 02/02/2023 18:17 WG1998813
1,2-Dibromo-3-Chloropropane U 1.38 25.0 5 02/02/2023 18:17 WG1998813
1,2-Dibromoethane U 0.630 5.00 5 02/02/2023 18:17 WG1998813
Dibromomethane U 0.610 5.00 5 02/02/2023 18:17 WG1998813
1,2-Dichlorobenzene U 0.535 5.00 5 02/02/2023 18:17 WG1998813
1,3-Dichlorobenzene U 0.550 5.00 5 02/02/2023 18:17 WG1998813
1,4-Dichlorobenzene U 0.600 5.00 5 02/02/2023 18:17 WG1998813
Dichlorodifluoromethane U 1.87 25.0 5 02/02/2023 18:17 WG1998813
1,1-Dichloroethane U 0.500 5.00 5 02/02/2023 18:17 WG1998813
1,2-Dichloroethane U 0.409 5.00 5 02/02/2023 18:17 WG1998813
1,1-Dichloroethene U 0.940 5.00 5 02/02/2023 18:17 WG1998813
cis-1,2-Dichloroethene U 0.630 5.00 5 02/02/2023 18:17 WG1998813
trans-1,2-Dichloroethene U 0.745 5.00 5 02/02/2023 18:17 WG1998813
1,2-Dichloropropane U 0.745 5.00 5 02/02/2023 18:17 WG1998813
1,1-Dichloropropene U 0.710 5.00 5 02/02/2023 18:17 WG1998813
1,3-Dichloropropane U 0.550 5.00 5 02/02/2023 18:17 WG1998813
2,2-Dichloropropane U 0.805 5.00 5 02/02/2023 18:17 WG1998813
Di-isopropyl ether U 0.525 5.00 5 02/02/2023 18:17 WG1998813
Ethylbenzene U 0.685 5.00 5 02/02/2023 18:17 WG1998813
Hexachloro-1,3-butadiene U 1.69 5.00 5 02/02/2023 18:17 WG1998813
Isopropylbenzene U 0.525 5.00 5 02/02/2023 18:17 WG1998813
p-Isopropyltoluene U 0.600 5.00 5 02/02/2023 18:17 WG1998813
2-Butanone (MEK)U 5.95 50.0 5 02/02/2023 18:17 WG1998813
Methylene Chloride U 2.15 25.0 5 02/02/2023 18:17 WG1998813
4-Methyl-2-pentanone (MIBK)U 2.39 50.0 5 02/02/2023 18:17 WG1998813
Methyl tert-butyl ether U 0.505 5.00 5 02/02/2023 18:17 WG1998813
Naphthalene U 5.00 25.0 5 02/02/2023 18:17 WG1998813
n-Propylbenzene U 0.497 5.00 5 02/02/2023 18:17 WG1998813
Styrene U 0.590 5.00 5 02/02/2023 18:17 WG1998813
1,1,1,2-Tetrachloroethane U 0.735 5.00 5 02/02/2023 18:17 WG1998813
1,1,2,2-Tetrachloroethane U 0.665 5.00 5 02/02/2023 18:17 WG1998813
Tetrachloroethene U 1.50 5.00 5 02/02/2023 18:17 WG1998813
Toluene U 1.39 5.00 5 02/02/2023 18:17 WG1998813
1,2,3-Trichlorobenzene U 1.15 5.00 5 02/02/2023 18:17 WG1998813
1,2,4-Trichlorobenzene U 2.41 5.00 5 02/02/2023 18:17 WG1998813
1,1,1-Trichloroethane U 0.745 5.00 5 02/02/2023 18:17 WG1998813
1,1,2-Trichloroethane U 0.790 5.00 5 02/02/2023 18:17 WG1998813
Trichloroethene U 0.950 5.00 5 02/02/2023 18:17 WG1998813
1 Cp
2Tc
3Ss
4Cn
5Ds
6Sr
7Qc
8Gl
9Al
10Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC SLC1806802 L1580131 02/03/23 11:37 19 of 40
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC SLC1806802 L1580131 02/03/23 18:03 19 of 40
SAMPLE RESULTS - 07
L1580131
MW-9
Collected date/time: 01/24/23 13:05
Volatile Organic Compounds (GC/MS) by Method 6200B-2011
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
Trichlorofluoromethane U 0.800 25.0 5 02/02/2023 18:17 WG1998813
1,2,3-Trichloropropane U 1.19 12.5 5 02/02/2023 18:17 WG1998813
1,2,4-Trimethylbenzene U 1.61 5.00 5 02/02/2023 18:17 WG1998813
1,3,5-Trimethylbenzene U 0.520 5.00 5 02/02/2023 18:17 WG1998813
Vinyl chloride U 1.17 5.00 5 02/02/2023 18:17 WG1998813
o-Xylene U 0.870 5.00 5 02/02/2023 18:17 WG1998813
m&p-Xylenes U 2.15 10.0 5 02/02/2023 18:17 WG1998813
(S) Toluene-d8 92.8 80.0-120 02/02/2023 18:17 WG1998813
(S) 4-Bromofluorobenzene 83.0 77.0-126 02/02/2023 18:17 WG1998813
(S) 1,2-Dichloroethane-d4 109 70.0-130 02/02/2023 18:17 WG1998813
Sample Narrative:
L1580131-07 WG1998813: IS/SURR failed on lower dilution.
1 Cp
2Tc
3Ss
4Cn
5Ds
6Sr
7Qc
8Gl
9Al
10Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC SLC1806802 L1580131 02/03/23 11:37 20 of 40
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC SLC1806802 L1580131 02/03/23 18:03 20 of 40
SAMPLE RESULTS - 08
L1580131
MW-10
Collected date/time: 01/24/23 11:15
Volatile Organic Compounds (GC/MS) by Method 6200B-2011
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
Acetone U 11.3 50.0 1 02/02/2023 14:58 WG1998813
Acrolein U 2.54 50.0 1 02/02/2023 14:58 WG1998813
Acrylonitrile U 0.671 10.0 1 02/02/2023 14:58 WG1998813
Benzene U 0.0941 1.00 1 02/02/2023 14:58 WG1998813
Bromobenzene U 0.118 1.00 1 02/02/2023 14:58 WG1998813
Bromodichloromethane U 0.136 1.00 1 02/02/2023 14:58 WG1998813
Bromoform U 0.129 1.00 1 02/02/2023 14:58 WG1998813
Bromomethane U 0.605 5.00 1 02/02/2023 14:58 WG1998813
n-Butylbenzene U 0.157 1.00 1 02/02/2023 14:58 WG1998813
sec-Butylbenzene U 0.125 1.00 1 02/02/2023 14:58 WG1998813
tert-Butylbenzene U 0.127 1.00 1 02/02/2023 14:58 WG1998813
Carbon tetrachloride U 0.128 1.00 1 02/02/2023 14:58 WG1998813
Chlorobenzene U 0.116 1.00 1 02/02/2023 14:58 WG1998813
Chlorodibromomethane U 0.140 1.00 1 02/02/2023 14:58 WG1998813
Chloroethane U 0.192 5.00 1 02/02/2023 14:58 WG1998813
Chloroform U 0.111 5.00 1 02/02/2023 14:58 WG1998813
Chloromethane U 0.960 2.50 1 02/02/2023 14:58 WG1998813
2-Chlorotoluene U 0.106 1.00 1 02/02/2023 14:58 WG1998813
4-Chlorotoluene U 0.114 1.00 1 02/02/2023 14:58 WG1998813
1,2-Dibromo-3-Chloropropane U 0.276 5.00 1 02/02/2023 14:58 WG1998813
1,2-Dibromoethane U 0.126 1.00 1 02/02/2023 14:58 WG1998813
Dibromomethane U 0.122 1.00 1 02/02/2023 14:58 WG1998813
1,2-Dichlorobenzene U 0.107 1.00 1 02/02/2023 14:58 WG1998813
1,3-Dichlorobenzene U 0.110 1.00 1 02/02/2023 14:58 WG1998813
1,4-Dichlorobenzene U 0.120 1.00 1 02/02/2023 14:58 WG1998813
Dichlorodifluoromethane U 0.374 5.00 1 02/02/2023 14:58 WG1998813
1,1-Dichloroethane U 0.100 1.00 1 02/02/2023 14:58 WG1998813
1,2-Dichloroethane U 0.0819 1.00 1 02/02/2023 14:58 WG1998813
1,1-Dichloroethene U 0.188 1.00 1 02/02/2023 14:58 WG1998813
cis-1,2-Dichloroethene U 0.126 1.00 1 02/02/2023 14:58 WG1998813
trans-1,2-Dichloroethene U 0.149 1.00 1 02/02/2023 14:58 WG1998813
1,2-Dichloropropane U 0.149 1.00 1 02/02/2023 14:58 WG1998813
1,1-Dichloropropene U 0.142 1.00 1 02/02/2023 14:58 WG1998813
1,3-Dichloropropane U 0.110 1.00 1 02/02/2023 14:58 WG1998813
2,2-Dichloropropane U 0.161 1.00 1 02/02/2023 14:58 WG1998813
Di-isopropyl ether 0.907 J 0.105 1.00 1 02/02/2023 14:58 WG1998813
Ethylbenzene U 0.137 1.00 1 02/02/2023 14:58 WG1998813
Hexachloro-1,3-butadiene U 0.337 1.00 1 02/02/2023 14:58 WG1998813
Isopropylbenzene U 0.105 1.00 1 02/02/2023 14:58 WG1998813
p-Isopropyltoluene U 0.120 1.00 1 02/02/2023 14:58 WG1998813
2-Butanone (MEK)U 1.19 10.0 1 02/02/2023 14:58 WG1998813
Methylene Chloride U 0.430 5.00 1 02/02/2023 14:58 WG1998813
4-Methyl-2-pentanone (MIBK)U 0.478 10.0 1 02/02/2023 14:58 WG1998813
Methyl tert-butyl ether 24.5 0.101 1.00 1 02/02/2023 14:58 WG1998813
Naphthalene U 1.00 5.00 1 02/02/2023 14:58 WG1998813
n-Propylbenzene U 0.0993 1.00 1 02/02/2023 14:58 WG1998813
Styrene U 0.118 1.00 1 02/02/2023 14:58 WG1998813
1,1,1,2-Tetrachloroethane U 0.147 1.00 1 02/02/2023 14:58 WG1998813
1,1,2,2-Tetrachloroethane U 0.133 1.00 1 02/02/2023 14:58 WG1998813
Tetrachloroethene U 0.300 1.00 1 02/02/2023 14:58 WG1998813
Toluene U 0.278 1.00 1 02/02/2023 14:58 WG1998813
1,2,3-Trichlorobenzene U 0.230 1.00 1 02/02/2023 14:58 WG1998813
1,2,4-Trichlorobenzene U 0.481 1.00 1 02/02/2023 14:58 WG1998813
1,1,1-Trichloroethane U 0.149 1.00 1 02/02/2023 14:58 WG1998813
1,1,2-Trichloroethane U 0.158 1.00 1 02/02/2023 14:58 WG1998813
Trichloroethene U 0.190 1.00 1 02/02/2023 14:58 WG1998813
1 Cp
2Tc
3Ss
4Cn
5Ds
6Sr
7Qc
8Gl
9Al
10Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC SLC1806802 L1580131 02/03/23 11:37 21 of 40
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC SLC1806802 L1580131 02/03/23 18:03 21 of 40
SAMPLE RESULTS - 08
L1580131
MW-10
Collected date/time: 01/24/23 11:15
Volatile Organic Compounds (GC/MS) by Method 6200B-2011
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
Trichlorofluoromethane U 0.160 5.00 1 02/02/2023 14:58 WG1998813
1,2,3-Trichloropropane U 0.237 2.50 1 02/02/2023 14:58 WG1998813
1,2,4-Trimethylbenzene U 0.322 1.00 1 02/02/2023 14:58 WG1998813
1,3,5-Trimethylbenzene U 0.104 1.00 1 02/02/2023 14:58 WG1998813
Vinyl chloride U 0.234 1.00 1 02/02/2023 14:58 WG1998813
o-Xylene U 0.174 1.00 1 02/02/2023 14:58 WG1998813
m&p-Xylenes U 0.430 2.00 1 02/02/2023 14:58 WG1998813
(S) Toluene-d8 97.2 80.0-120 02/02/2023 14:58 WG1998813
(S) 4-Bromofluorobenzene 83.3 77.0-126 02/02/2023 14:58 WG1998813
(S) 1,2-Dichloroethane-d4 103 70.0-130 02/02/2023 14:58 WG1998813
1 Cp
2Tc
3Ss
4Cn
5Ds
6Sr
7Qc
8Gl
9Al
10Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC SLC1806802 L1580131 02/03/23 11:37 22 of 40
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC SLC1806802 L1580131 02/03/23 18:03 22 of 40
SAMPLE RESULTS - 09
L1580131
VEW-1
Collected date/time: 01/24/23 11:25
Volatile Organic Compounds (GC/MS) by Method 6200B-2011
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
Acetone U 11.3 50.0 1 02/02/2023 15:18 WG1998813
Acrolein U 2.54 50.0 1 02/02/2023 15:18 WG1998813
Acrylonitrile U 0.671 10.0 1 02/02/2023 15:18 WG1998813
Benzene U 0.0941 1.00 1 02/02/2023 15:18 WG1998813
Bromobenzene U 0.118 1.00 1 02/02/2023 15:18 WG1998813
Bromodichloromethane U 0.136 1.00 1 02/02/2023 15:18 WG1998813
Bromoform U 0.129 1.00 1 02/02/2023 15:18 WG1998813
Bromomethane U 0.605 5.00 1 02/02/2023 15:18 WG1998813
n-Butylbenzene U 0.157 1.00 1 02/02/2023 15:18 WG1998813
sec-Butylbenzene U 0.125 1.00 1 02/02/2023 15:18 WG1998813
tert-Butylbenzene U 0.127 1.00 1 02/02/2023 15:18 WG1998813
Carbon tetrachloride U 0.128 1.00 1 02/02/2023 15:18 WG1998813
Chlorobenzene U 0.116 1.00 1 02/02/2023 15:18 WG1998813
Chlorodibromomethane U 0.140 1.00 1 02/02/2023 15:18 WG1998813
Chloroethane U 0.192 5.00 1 02/02/2023 15:18 WG1998813
Chloroform U 0.111 5.00 1 02/02/2023 15:18 WG1998813
Chloromethane U 0.960 2.50 1 02/02/2023 15:18 WG1998813
2-Chlorotoluene U 0.106 1.00 1 02/02/2023 15:18 WG1998813
4-Chlorotoluene U 0.114 1.00 1 02/02/2023 15:18 WG1998813
1,2-Dibromo-3-Chloropropane U 0.276 5.00 1 02/02/2023 15:18 WG1998813
1,2-Dibromoethane U 0.126 1.00 1 02/02/2023 15:18 WG1998813
Dibromomethane U 0.122 1.00 1 02/02/2023 15:18 WG1998813
1,2-Dichlorobenzene U 0.107 1.00 1 02/02/2023 15:18 WG1998813
1,3-Dichlorobenzene U 0.110 1.00 1 02/02/2023 15:18 WG1998813
1,4-Dichlorobenzene U 0.120 1.00 1 02/02/2023 15:18 WG1998813
Dichlorodifluoromethane U 0.374 5.00 1 02/02/2023 15:18 WG1998813
1,1-Dichloroethane U 0.100 1.00 1 02/02/2023 15:18 WG1998813
1,2-Dichloroethane U 0.0819 1.00 1 02/02/2023 15:18 WG1998813
1,1-Dichloroethene U 0.188 1.00 1 02/02/2023 15:18 WG1998813
cis-1,2-Dichloroethene U 0.126 1.00 1 02/02/2023 15:18 WG1998813
trans-1,2-Dichloroethene U 0.149 1.00 1 02/02/2023 15:18 WG1998813
1,2-Dichloropropane U 0.149 1.00 1 02/02/2023 15:18 WG1998813
1,1-Dichloropropene U 0.142 1.00 1 02/02/2023 15:18 WG1998813
1,3-Dichloropropane U 0.110 1.00 1 02/02/2023 15:18 WG1998813
2,2-Dichloropropane U 0.161 1.00 1 02/02/2023 15:18 WG1998813
Di-isopropyl ether 0.118 J 0.105 1.00 1 02/02/2023 15:18 WG1998813
Ethylbenzene U 0.137 1.00 1 02/02/2023 15:18 WG1998813
Hexachloro-1,3-butadiene U 0.337 1.00 1 02/02/2023 15:18 WG1998813
Isopropylbenzene U 0.105 1.00 1 02/02/2023 15:18 WG1998813
p-Isopropyltoluene U 0.120 1.00 1 02/02/2023 15:18 WG1998813
2-Butanone (MEK)U 1.19 10.0 1 02/02/2023 15:18 WG1998813
Methylene Chloride U 0.430 5.00 1 02/02/2023 15:18 WG1998813
4-Methyl-2-pentanone (MIBK)U 0.478 10.0 1 02/02/2023 15:18 WG1998813
Methyl tert-butyl ether 5.32 0.101 1.00 1 02/02/2023 15:18 WG1998813
Naphthalene U 1.00 5.00 1 02/02/2023 15:18 WG1998813
n-Propylbenzene U 0.0993 1.00 1 02/02/2023 15:18 WG1998813
Styrene U 0.118 1.00 1 02/02/2023 15:18 WG1998813
1,1,1,2-Tetrachloroethane U 0.147 1.00 1 02/02/2023 15:18 WG1998813
1,1,2,2-Tetrachloroethane U 0.133 1.00 1 02/02/2023 15:18 WG1998813
Tetrachloroethene U 0.300 1.00 1 02/02/2023 15:18 WG1998813
Toluene U 0.278 1.00 1 02/02/2023 15:18 WG1998813
1,2,3-Trichlorobenzene U 0.230 1.00 1 02/02/2023 15:18 WG1998813
1,2,4-Trichlorobenzene U 0.481 1.00 1 02/02/2023 15:18 WG1998813
1,1,1-Trichloroethane U 0.149 1.00 1 02/02/2023 15:18 WG1998813
1,1,2-Trichloroethane U 0.158 1.00 1 02/02/2023 15:18 WG1998813
Trichloroethene U 0.190 1.00 1 02/02/2023 15:18 WG1998813
1 Cp
2Tc
3Ss
4Cn
5Ds
6Sr
7Qc
8Gl
9Al
10Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC SLC1806802 L1580131 02/03/23 11:37 23 of 40
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC SLC1806802 L1580131 02/03/23 18:03 23 of 40
SAMPLE RESULTS - 09
L1580131
VEW-1
Collected date/time: 01/24/23 11:25
Volatile Organic Compounds (GC/MS) by Method 6200B-2011
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
Trichlorofluoromethane U 0.160 5.00 1 02/02/2023 15:18 WG1998813
1,2,3-Trichloropropane U 0.237 2.50 1 02/02/2023 15:18 WG1998813
1,2,4-Trimethylbenzene U 0.322 1.00 1 02/02/2023 15:18 WG1998813
1,3,5-Trimethylbenzene U 0.104 1.00 1 02/02/2023 15:18 WG1998813
Vinyl chloride U 0.234 1.00 1 02/02/2023 15:18 WG1998813
o-Xylene U 0.174 1.00 1 02/02/2023 15:18 WG1998813
m&p-Xylenes U 0.430 2.00 1 02/02/2023 15:18 WG1998813
(S) Toluene-d8 92.5 80.0-120 02/02/2023 15:18 WG1998813
(S) 4-Bromofluorobenzene 83.1 77.0-126 02/02/2023 15:18 WG1998813
(S) 1,2-Dichloroethane-d4 107 70.0-130 02/02/2023 15:18 WG1998813
1 Cp
2Tc
3Ss
4Cn
5Ds
6Sr
7Qc
8Gl
9Al
10Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC SLC1806802 L1580131 02/03/23 11:37 24 of 40
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC SLC1806802 L1580131 02/03/23 18:03 24 of 40
SAMPLE RESULTS - 10
L1580131
SW-1
Collected date/time: 01/24/23 13:20
Volatile Organic Compounds (GC/MS) by Method 6200B-2011
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
Acetone U 11.3 50.0 1 02/02/2023 15:38 WG1998813
Acrolein U 2.54 50.0 1 02/02/2023 15:38 WG1998813
Acrylonitrile U 0.671 10.0 1 02/02/2023 15:38 WG1998813
Benzene U 0.0941 1.00 1 02/02/2023 15:38 WG1998813
Bromobenzene U 0.118 1.00 1 02/02/2023 15:38 WG1998813
Bromodichloromethane U 0.136 1.00 1 02/02/2023 15:38 WG1998813
Bromoform U 0.129 1.00 1 02/02/2023 15:38 WG1998813
Bromomethane U 0.605 5.00 1 02/02/2023 15:38 WG1998813
n-Butylbenzene U 0.157 1.00 1 02/02/2023 15:38 WG1998813
sec-Butylbenzene U 0.125 1.00 1 02/02/2023 15:38 WG1998813
tert-Butylbenzene U 0.127 1.00 1 02/02/2023 15:38 WG1998813
Carbon tetrachloride U 0.128 1.00 1 02/02/2023 15:38 WG1998813
Chlorobenzene U 0.116 1.00 1 02/02/2023 15:38 WG1998813
Chlorodibromomethane U 0.140 1.00 1 02/02/2023 15:38 WG1998813
Chloroethane U 0.192 5.00 1 02/02/2023 15:38 WG1998813
Chloroform U 0.111 5.00 1 02/02/2023 15:38 WG1998813
Chloromethane U 0.960 2.50 1 02/02/2023 15:38 WG1998813
2-Chlorotoluene U 0.106 1.00 1 02/02/2023 15:38 WG1998813
4-Chlorotoluene U 0.114 1.00 1 02/02/2023 15:38 WG1998813
1,2-Dibromo-3-Chloropropane U 0.276 5.00 1 02/02/2023 15:38 WG1998813
1,2-Dibromoethane U 0.126 1.00 1 02/02/2023 15:38 WG1998813
Dibromomethane U 0.122 1.00 1 02/02/2023 15:38 WG1998813
1,2-Dichlorobenzene U 0.107 1.00 1 02/02/2023 15:38 WG1998813
1,3-Dichlorobenzene U 0.110 1.00 1 02/02/2023 15:38 WG1998813
1,4-Dichlorobenzene U 0.120 1.00 1 02/02/2023 15:38 WG1998813
Dichlorodifluoromethane U 0.374 5.00 1 02/02/2023 15:38 WG1998813
1,1-Dichloroethane U 0.100 1.00 1 02/02/2023 15:38 WG1998813
1,2-Dichloroethane U 0.0819 1.00 1 02/02/2023 15:38 WG1998813
1,1-Dichloroethene U 0.188 1.00 1 02/02/2023 15:38 WG1998813
cis-1,2-Dichloroethene U 0.126 1.00 1 02/02/2023 15:38 WG1998813
trans-1,2-Dichloroethene U 0.149 1.00 1 02/02/2023 15:38 WG1998813
1,2-Dichloropropane U 0.149 1.00 1 02/02/2023 15:38 WG1998813
1,1-Dichloropropene U 0.142 1.00 1 02/02/2023 15:38 WG1998813
1,3-Dichloropropane U 0.110 1.00 1 02/02/2023 15:38 WG1998813
2,2-Dichloropropane U 0.161 1.00 1 02/02/2023 15:38 WG1998813
Di-isopropyl ether 3.24 0.105 1.00 1 02/02/2023 15:38 WG1998813
Ethylbenzene U 0.137 1.00 1 02/02/2023 15:38 WG1998813
Hexachloro-1,3-butadiene U 0.337 1.00 1 02/02/2023 15:38 WG1998813
Isopropylbenzene U 0.105 1.00 1 02/02/2023 15:38 WG1998813
p-Isopropyltoluene U 0.120 1.00 1 02/02/2023 15:38 WG1998813
2-Butanone (MEK)U 1.19 10.0 1 02/02/2023 15:38 WG1998813
Methylene Chloride U 0.430 5.00 1 02/02/2023 15:38 WG1998813
4-Methyl-2-pentanone (MIBK)U 0.478 10.0 1 02/02/2023 15:38 WG1998813
Methyl tert-butyl ether 0.757 J 0.101 1.00 1 02/02/2023 15:38 WG1998813
Naphthalene U 1.00 5.00 1 02/02/2023 15:38 WG1998813
n-Propylbenzene U 0.0993 1.00 1 02/02/2023 15:38 WG1998813
Styrene U 0.118 1.00 1 02/02/2023 15:38 WG1998813
1,1,1,2-Tetrachloroethane U 0.147 1.00 1 02/02/2023 15:38 WG1998813
1,1,2,2-Tetrachloroethane U 0.133 1.00 1 02/02/2023 15:38 WG1998813
Tetrachloroethene U 0.300 1.00 1 02/02/2023 15:38 WG1998813
Toluene U 0.278 1.00 1 02/02/2023 15:38 WG1998813
1,2,3-Trichlorobenzene U 0.230 1.00 1 02/02/2023 15:38 WG1998813
1,2,4-Trichlorobenzene U 0.481 1.00 1 02/02/2023 15:38 WG1998813
1,1,1-Trichloroethane U 0.149 1.00 1 02/02/2023 15:38 WG1998813
1,1,2-Trichloroethane U 0.158 1.00 1 02/02/2023 15:38 WG1998813
Trichloroethene U 0.190 1.00 1 02/02/2023 15:38 WG1998813
1 Cp
2Tc
3Ss
4Cn
5Ds
6Sr
7Qc
8Gl
9Al
10Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC SLC1806802 L1580131 02/03/23 11:37 25 of 40
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC SLC1806802 L1580131 02/03/23 18:03 25 of 40
SAMPLE RESULTS - 10
L1580131
SW-1
Collected date/time: 01/24/23 13:20
Volatile Organic Compounds (GC/MS) by Method 6200B-2011
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
Trichlorofluoromethane U 0.160 5.00 1 02/02/2023 15:38 WG1998813
1,2,3-Trichloropropane U 0.237 2.50 1 02/02/2023 15:38 WG1998813
1,2,4-Trimethylbenzene U 0.322 1.00 1 02/02/2023 15:38 WG1998813
1,3,5-Trimethylbenzene U 0.104 1.00 1 02/02/2023 15:38 WG1998813
Vinyl chloride U 0.234 1.00 1 02/02/2023 15:38 WG1998813
o-Xylene U 0.174 1.00 1 02/02/2023 15:38 WG1998813
m&p-Xylenes U 0.430 2.00 1 02/02/2023 15:38 WG1998813
(S) Toluene-d8 93.2 80.0-120 02/02/2023 15:38 WG1998813
(S) 4-Bromofluorobenzene 82.7 77.0-126 02/02/2023 15:38 WG1998813
(S) 1,2-Dichloroethane-d4 108 70.0-130 02/02/2023 15:38 WG1998813
1 Cp
2Tc
3Ss
4Cn
5Ds
6Sr
7Qc
8Gl
9Al
10Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC SLC1806802 L1580131 02/03/23 11:37 26 of 40
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC SLC1806802 L1580131 02/03/23 18:03 26 of 40
SAMPLE RESULTS - 11
L1580131
FIELD BLANK
Collected date/time: 01/24/23 14:45
Volatile Organic Compounds (GC/MS) by Method 6200B-2011
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
Acetone 12.9 J 11.3 50.0 1 01/31/2023 23:04 WG1997802
Acrolein U 2.54 50.0 1 01/31/2023 23:04 WG1997802
Acrylonitrile U 0.671 10.0 1 01/31/2023 23:04 WG1997802
Benzene U 0.0941 1.00 1 01/31/2023 23:04 WG1997802
Bromobenzene U 0.118 1.00 1 01/31/2023 23:04 WG1997802
Bromodichloromethane U 0.136 1.00 1 01/31/2023 23:04 WG1997802
Bromoform U 0.129 1.00 1 01/31/2023 23:04 WG1997802
Bromomethane U 0.605 5.00 1 01/31/2023 23:04 WG1997802
n-Butylbenzene U 0.157 1.00 1 01/31/2023 23:04 WG1997802
sec-Butylbenzene U 0.125 1.00 1 01/31/2023 23:04 WG1997802
tert-Butylbenzene U 0.127 1.00 1 01/31/2023 23:04 WG1997802
Carbon tetrachloride U 0.128 1.00 1 01/31/2023 23:04 WG1997802
Chlorobenzene U 0.116 1.00 1 01/31/2023 23:04 WG1997802
Chlorodibromomethane U 0.140 1.00 1 01/31/2023 23:04 WG1997802
Chloroethane U J3 0.192 5.00 1 01/31/2023 23:04 WG1997802
Chloroform U 0.111 5.00 1 01/31/2023 23:04 WG1997802
Chloromethane U J3 0.960 2.50 1 01/31/2023 23:04 WG1997802
2-Chlorotoluene U 0.106 1.00 1 01/31/2023 23:04 WG1997802
4-Chlorotoluene U 0.114 1.00 1 01/31/2023 23:04 WG1997802
1,2-Dibromo-3-Chloropropane U 0.276 5.00 1 01/31/2023 23:04 WG1997802
1,2-Dibromoethane U 0.126 1.00 1 01/31/2023 23:04 WG1997802
Dibromomethane U 0.122 1.00 1 01/31/2023 23:04 WG1997802
1,2-Dichlorobenzene U 0.107 1.00 1 01/31/2023 23:04 WG1997802
1,3-Dichlorobenzene U 0.110 1.00 1 01/31/2023 23:04 WG1997802
1,4-Dichlorobenzene U 0.120 1.00 1 01/31/2023 23:04 WG1997802
Dichlorodifluoromethane U 0.374 5.00 1 01/31/2023 23:04 WG1997802
1,1-Dichloroethane U 0.100 1.00 1 01/31/2023 23:04 WG1997802
1,2-Dichloroethane U 0.0819 1.00 1 01/31/2023 23:04 WG1997802
1,1-Dichloroethene U 0.188 1.00 1 01/31/2023 23:04 WG1997802
cis-1,2-Dichloroethene U 0.126 1.00 1 01/31/2023 23:04 WG1997802
trans-1,2-Dichloroethene U 0.149 1.00 1 01/31/2023 23:04 WG1997802
1,2-Dichloropropane U 0.149 1.00 1 01/31/2023 23:04 WG1997802
1,1-Dichloropropene U 0.142 1.00 1 01/31/2023 23:04 WG1997802
1,3-Dichloropropane U 0.110 1.00 1 01/31/2023 23:04 WG1997802
2,2-Dichloropropane U 0.161 1.00 1 01/31/2023 23:04 WG1997802
Di-isopropyl ether U 0.105 1.00 1 01/31/2023 23:04 WG1997802
Ethylbenzene U 0.137 1.00 1 01/31/2023 23:04 WG1997802
Hexachloro-1,3-butadiene U 0.337 1.00 1 01/31/2023 23:04 WG1997802
Isopropylbenzene U 0.105 1.00 1 01/31/2023 23:04 WG1997802
p-Isopropyltoluene U 0.120 1.00 1 01/31/2023 23:04 WG1997802
2-Butanone (MEK)1.61 J 1.19 10.0 1 01/31/2023 23:04 WG1997802
Methylene Chloride 3.62 J 0.430 5.00 1 01/31/2023 23:04 WG1997802
4-Methyl-2-pentanone (MIBK)U 0.478 10.0 1 01/31/2023 23:04 WG1997802
Methyl tert-butyl ether U 0.101 1.00 1 01/31/2023 23:04 WG1997802
Naphthalene U 1.00 5.00 1 01/31/2023 23:04 WG1997802
n-Propylbenzene U 0.0993 1.00 1 01/31/2023 23:04 WG1997802
Styrene U 0.118 1.00 1 01/31/2023 23:04 WG1997802
1,1,1,2-Tetrachloroethane U 0.147 1.00 1 01/31/2023 23:04 WG1997802
1,1,2,2-Tetrachloroethane U 0.133 1.00 1 01/31/2023 23:04 WG1997802
Tetrachloroethene U 0.300 1.00 1 01/31/2023 23:04 WG1997802
Toluene U 0.278 1.00 1 01/31/2023 23:04 WG1997802
1,2,3-Trichlorobenzene U 0.230 1.00 1 01/31/2023 23:04 WG1997802
1,2,4-Trichlorobenzene U 0.481 1.00 1 01/31/2023 23:04 WG1997802
1,1,1-Trichloroethane U 0.149 1.00 1 01/31/2023 23:04 WG1997802
1,1,2-Trichloroethane U 0.158 1.00 1 01/31/2023 23:04 WG1997802
Trichloroethene U 0.190 1.00 1 01/31/2023 23:04 WG1997802
1 Cp
2Tc
3Ss
4Cn
5Ds
6Sr
7Qc
8Gl
9Al
10Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
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SAMPLE RESULTS - 11
L1580131
FIELD BLANK
Collected date/time: 01/24/23 14:45
Volatile Organic Compounds (GC/MS) by Method 6200B-2011
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
Trichlorofluoromethane U 0.160 5.00 1 01/31/2023 23:04 WG1997802
1,2,3-Trichloropropane U 0.237 2.50 1 01/31/2023 23:04 WG1997802
1,2,4-Trimethylbenzene U 0.322 1.00 1 01/31/2023 23:04 WG1997802
1,3,5-Trimethylbenzene U 0.104 1.00 1 01/31/2023 23:04 WG1997802
Vinyl chloride U 0.234 1.00 1 01/31/2023 23:04 WG1997802
o-Xylene U J4 0.174 1.00 1 01/31/2023 23:04 WG1997802
m&p-Xylenes U 0.430 2.00 1 01/31/2023 23:04 WG1997802
(S) Toluene-d8 90.1 80.0-120 01/31/2023 23:04 WG1997802
(S) 4-Bromofluorobenzene 82.1 77.0-126 01/31/2023 23:04 WG1997802
(S) 1,2-Dichloroethane-d4 105 70.0-130 01/31/2023 23:04 WG1997802
1 Cp
2Tc
3Ss
4Cn
5Ds
6Sr
7Qc
8Gl
9Al
10Sc
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QUALITY CONTROL SUMMARYWG1997802
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 L1580131-11
Method Blank (MB)
(MB) R3886744-3 01/31/23 21:39
MB Result MB Qualifier MB MDL MB RDL
Analyte ug/l ug/l ug/l
Acetone U 11.3 50.0
Acrolein U 2.54 50.0
Acrylonitrile U 0.671 10.0
Benzene U 0.0941 1.00
Bromobenzene U 0.118 1.00
Bromodichloromethane U 0.136 1.00
Bromoform U 0.129 1.00
Bromomethane U 0.605 5.00
n-Butylbenzene U 0.157 1.00
sec-Butylbenzene U 0.125 1.00
tert-Butylbenzene U 0.127 1.00
Carbon tetrachloride U 0.128 1.00
Chlorobenzene U 0.116 1.00
Chlorodibromomethane U 0.140 1.00
Chloroethane U 0.192 5.00
Chloroform U 0.111 5.00
Chloromethane U 0.960 2.50
2-Chlorotoluene U 0.106 1.00
4-Chlorotoluene U 0.114 1.00
1,2-Dibromo-3-Chloropropane U 0.276 5.00
1,2-Dibromoethane U 0.126 1.00
Dibromomethane U 0.122 1.00
1,2-Dichlorobenzene U 0.107 1.00
1,3-Dichlorobenzene U 0.110 1.00
1,4-Dichlorobenzene U 0.120 1.00
Dichlorodifluoromethane U 0.374 5.00
1,1-Dichloroethane U 0.100 1.00
1,2-Dichloroethane U 0.0819 1.00
1,1-Dichloroethene U 0.188 1.00
cis-1,2-Dichloroethene U 0.126 1.00
trans-1,2-Dichloroethene U 0.149 1.00
1,2-Dichloropropane U 0.149 1.00
1,1-Dichloropropene U 0.142 1.00
1,3-Dichloropropane U 0.110 1.00
2,2-Dichloropropane U 0.161 1.00
Di-isopropyl ether U 0.105 1.00
Ethylbenzene U 0.137 1.00
Hexachloro-1,3-butadiene U 0.337 1.00
Isopropylbenzene U 0.105 1.00
p-Isopropyltoluene U 0.120 1.00
1 Cp
2Tc
3Ss
4Cn
5Ds
6Sr
7Qc
8Gl
9Al
10Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
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QUALITY CONTROL SUMMARYWG1997802
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 L1580131-11
Method Blank (MB)
(MB) R3886744-3 01/31/23 21:39
MB Result MB Qualifier MB MDL MB RDL
Analyte ug/l ug/l ug/l
2-Butanone (MEK)U 1.19 10.0
Methylene Chloride U 0.430 5.00
4-Methyl-2-pentanone (MIBK)U 0.478 10.0
Methyl tert-butyl ether U 0.101 1.00
Naphthalene U 1.00 5.00
n-Propylbenzene U 0.0993 1.00
Styrene U 0.118 1.00
1,1,1,2-Tetrachloroethane U 0.147 1.00
1,1,2,2-Tetrachloroethane U 0.133 1.00
Tetrachloroethene U 0.300 1.00
Toluene U 0.278 1.00
1,2,3-Trichlorobenzene U 0.230 1.00
1,2,4-Trichlorobenzene U 0.481 1.00
1,1,1-Trichloroethane U 0.149 1.00
1,1,2-Trichloroethane U 0.158 1.00
Trichloroethene U 0.190 1.00
Trichlorofluoromethane U 0.160 5.00
1,2,3-Trichloropropane U 0.237 2.50
1,2,4-Trimethylbenzene U 0.322 1.00
1,3,5-Trimethylbenzene U 0.104 1.00
Vinyl chloride U 0.234 1.00
o-Xylene U 0.174 1.00
m&p-Xylenes U 0.430 2.00
(S) Toluene-d8 91.3 80.0-120
(S) 4-Bromofluorobenzene 81.6 77.0-126
(S) 1,2-Dichloroethane-d4 107 70.0-130
Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD)
(LCS) R3886744-1 01/31/23 20:22 • (LCSD) R3886744-2 01/31/23 20:42
Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits
Analyte ug/l ug/l ug/l %%%%%
Acetone 25.0 19.3 17.7 77.2 70.8 19.0-160 8.65 27
Acrolein 25.0 16.0 14.3 64.0 57.2 10.0-160 11.2 26
Acrylonitrile 25.0 21.3 19.2 85.2 76.8 55.0-149 10.4 20
Benzene 5.00 4.94 4.35 98.8 87.0 70.0-123 12.7 20
Bromobenzene 5.00 4.73 4.37 94.6 87.4 73.0-121 7.91 20
Bromodichloromethane 5.00 5.26 4.88 105 97.6 75.0-120 7.50 20
Bromoform 5.00 4.76 4.32 95.2 86.4 68.0-132 9.69 20
1 Cp
2Tc
3Ss
4Cn
5Ds
6Sr
7Qc
8Gl
9Al
10Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
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QUALITY CONTROL SUMMARYWG1997802
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 L1580131-11
Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD)
(LCS) R3886744-1 01/31/23 20:22 • (LCSD) R3886744-2 01/31/23 20:42
Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits
Analyte ug/l ug/l ug/l %%%%%
Bromomethane 5.00 5.17 4.72 103 94.4 10.0-160 9.10 25
n-Butylbenzene 5.00 4.69 4.18 93.8 83.6 73.0-125 11.5 20
sec-Butylbenzene 5.00 4.68 4.23 93.6 84.6 75.0-125 10.1 20
tert-Butylbenzene 5.00 4.42 4.07 88.4 81.4 76.0-124 8.25 20
Carbon tetrachloride 5.00 4.82 4.38 96.4 87.6 68.0-126 9.57 20
Chlorobenzene 5.00 4.75 4.20 95.0 84.0 80.0-121 12.3 20
Chlorodibromomethane 5.00 4.83 4.47 96.6 89.4 77.0-125 7.74 20
Chloroethane 5.00 5.49 4.42 110 88.4 47.0-150 J3 21.6 20
Chloroform 5.00 5.63 5.00 113 100 73.0-120 11.9 20
Chloromethane 5.00 4.26 3.48 85.2 69.6 41.0-142 J3 20.2 20
2-Chlorotoluene 5.00 4.67 4.21 93.4 84.2 76.0-123 10.4 20
4-Chlorotoluene 5.00 4.50 4.09 90.0 81.8 75.0-122 9.55 20
1,2-Dibromo-3-Chloropropane 5.00 4.22 4.29 84.4 85.8 58.0-134 1.65 20
1,2-Dibromoethane 5.00 4.91 4.51 98.2 90.2 80.0-122 8.49 20
Dibromomethane 5.00 5.13 4.65 103 93.0 80.0-120 9.82 20
1,2-Dichlorobenzene 5.00 4.90 4.59 98.0 91.8 79.0-121 6.53 20
1,3-Dichlorobenzene 5.00 5.08 4.55 102 91.0 79.0-120 11.0 20
1,4-Dichlorobenzene 5.00 5.01 4.69 100 93.8 79.0-120 6.60 20
Dichlorodifluoromethane 5.00 5.50 5.13 110 103 51.0-149 6.96 20
1,1-Dichloroethane 5.00 4.78 4.18 95.6 83.6 70.0-126 13.4 20
1,2-Dichloroethane 5.00 5.38 4.78 108 95.6 70.0-128 11.8 20
1,1-Dichloroethene 5.00 5.41 4.58 108 91.6 71.0-124 16.6 20
cis-1,2-Dichloroethene 5.00 4.97 4.47 99.4 89.4 73.0-120 10.6 20
trans-1,2-Dichloroethene 5.00 5.13 4.43 103 88.6 73.0-120 14.6 20
1,2-Dichloropropane 5.00 4.65 4.12 93.0 82.4 77.0-125 12.1 20
1,1-Dichloropropene 5.00 4.95 4.38 99.0 87.6 74.0-126 12.2 20
1,3-Dichloropropane 5.00 4.82 4.46 96.4 89.2 80.0-120 7.76 20
2,2-Dichloropropane 5.00 5.34 4.96 107 99.2 58.0-130 7.38 20
Di-isopropyl ether 5.00 4.35 3.91 87.0 78.2 58.0-138 10.7 20
Ethylbenzene 5.00 4.66 4.12 93.2 82.4 79.0-123 12.3 20
Hexachloro-1,3-butadiene 5.00 5.65 5.27 113 105 54.0-138 6.96 20
Isopropylbenzene 5.00 4.45 3.93 89.0 78.6 76.0-127 12.4 20
p-Isopropyltoluene 5.00 4.63 4.09 92.6 81.8 76.0-125 12.4 20
2-Butanone (MEK)25.0 23.5 21.8 94.0 87.2 44.0-160 7.51 20
Methylene Chloride 5.00 5.58 5.15 112 103 67.0-120 8.01 20
4-Methyl-2-pentanone (MIBK)25.0 23.4 21.8 93.6 87.2 68.0-142 7.08 20
Methyl tert-butyl ether 5.00 4.90 4.71 98.0 94.2 68.0-125 3.95 20
Naphthalene 5.00 3.99 4.08 79.8 81.6 54.0-135 2.23 20
n-Propylbenzene 5.00 4.42 4.06 88.4 81.2 77.0-124 8.49 20
Styrene 5.00 4.18 3.70 83.6 74.0 73.0-130 12.2 20
1 Cp
2Tc
3Ss
4Cn
5Ds
6Sr
7Qc
8Gl
9Al
10Sc
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QUALITY CONTROL SUMMARYWG1997802
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 L1580131-11
Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD)
(LCS) R3886744-1 01/31/23 20:22 • (LCSD) R3886744-2 01/31/23 20:42
Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits
Analyte ug/l ug/l ug/l %%%%%
1,1,1,2-Tetrachloroethane 5.00 4.90 4.29 98.0 85.8 75.0-125 13.3 20
1,1,2,2-Tetrachloroethane 5.00 4.73 4.72 94.6 94.4 65.0-130 0.212 20
Tetrachloroethene 5.00 5.29 4.55 106 91.0 72.0-132 15.0 20
Toluene 5.00 4.69 4.13 93.8 82.6 79.0-120 12.7 20
1,2,3-Trichlorobenzene 5.00 4.61 4.65 92.2 93.0 50.0-138 0.864 20
1,2,4-Trichlorobenzene 5.00 4.65 4.37 93.0 87.4 57.0-137 6.21 20
1,1,1-Trichloroethane 5.00 5.62 5.00 112 100 73.0-124 11.7 20
1,1,2-Trichloroethane 5.00 4.99 4.51 99.8 90.2 80.0-120 10.1 20
Trichloroethene 5.00 4.95 4.31 99.0 86.2 78.0-124 13.8 20
Trichlorofluoromethane 5.00 5.13 4.99 103 99.8 59.0-147 2.77 20
1,2,3-Trichloropropane 5.00 5.12 5.19 102 104 73.0-130 1.36 20
1,2,4-Trimethylbenzene 5.00 4.49 4.15 89.8 83.0 76.0-121 7.87 20
1,3,5-Trimethylbenzene 5.00 4.68 4.20 93.6 84.0 76.0-122 10.8 20
Vinyl chloride 5.00 4.82 4.26 96.4 85.2 67.0-131 12.3 20
o-Xylene 5.00 4.37 3.82 87.4 76.4 80.0-122 J4 13.4 20
m&p-Xylenes 10.0 9.40 8.32 94.0 83.2 80.0-122 12.2 20
(S) Toluene-d8 92.1 91.6 80.0-120
(S) 4-Bromofluorobenzene 86.7 84.4 77.0-126
(S) 1,2-Dichloroethane-d4 106 106 70.0-130
1 Cp
2Tc
3Ss
4Cn
5Ds
6Sr
7Qc
8Gl
9Al
10Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
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QUALITY CONTROL SUMMARYWG1998813
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 L1580131-01,02,03,04,05,06,07,08,09,10
Method Blank (MB)
(MB) R3887201-2 02/02/23 11:05
MB Result MB Qualifier MB MDL MB RDL
Analyte ug/l ug/l ug/l
Acetone U 11.3 50.0
Acrolein U 2.54 50.0
Acrylonitrile U 0.671 10.0
Benzene U 0.0941 1.00
Bromobenzene U 0.118 1.00
Bromodichloromethane U 0.136 1.00
Bromoform U 0.129 1.00
Bromomethane U 0.605 5.00
n-Butylbenzene U 0.157 1.00
sec-Butylbenzene U 0.125 1.00
tert-Butylbenzene U 0.127 1.00
Carbon tetrachloride U 0.128 1.00
Chlorobenzene U 0.116 1.00
Chlorodibromomethane U 0.140 1.00
Chloroethane U 0.192 5.00
Chloroform U 0.111 5.00
Chloromethane U 0.960 2.50
2-Chlorotoluene U 0.106 1.00
4-Chlorotoluene U 0.114 1.00
1,2-Dibromo-3-Chloropropane U 0.276 5.00
1,2-Dibromoethane U 0.126 1.00
Dibromomethane U 0.122 1.00
1,2-Dichlorobenzene U 0.107 1.00
1,3-Dichlorobenzene U 0.110 1.00
1,4-Dichlorobenzene U 0.120 1.00
Dichlorodifluoromethane U 0.374 5.00
1,1-Dichloroethane U 0.100 1.00
1,2-Dichloroethane U 0.0819 1.00
1,1-Dichloroethene U 0.188 1.00
cis-1,2-Dichloroethene U 0.126 1.00
trans-1,2-Dichloroethene U 0.149 1.00
1,2-Dichloropropane U 0.149 1.00
1,1-Dichloropropene U 0.142 1.00
1,3-Dichloropropane U 0.110 1.00
2,2-Dichloropropane U 0.161 1.00
Di-isopropyl ether U 0.105 1.00
Ethylbenzene U 0.137 1.00
Hexachloro-1,3-butadiene U 0.337 1.00
Isopropylbenzene U 0.105 1.00
p-Isopropyltoluene U 0.120 1.00
1 Cp
2Tc
3Ss
4Cn
5Ds
6Sr
7Qc
8Gl
9Al
10Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
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QUALITY CONTROL SUMMARYWG1998813
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 L1580131-01,02,03,04,05,06,07,08,09,10
Method Blank (MB)
(MB) R3887201-2 02/02/23 11:05
MB Result MB Qualifier MB MDL MB RDL
Analyte ug/l ug/l ug/l
2-Butanone (MEK)U 1.19 10.0
Methylene Chloride U 0.430 5.00
4-Methyl-2-pentanone (MIBK)U 0.478 10.0
Methyl tert-butyl ether U 0.101 1.00
Naphthalene U 1.00 5.00
n-Propylbenzene U 0.0993 1.00
Styrene U 0.118 1.00
1,1,1,2-Tetrachloroethane U 0.147 1.00
1,1,2,2-Tetrachloroethane U 0.133 1.00
Tetrachloroethene U 0.300 1.00
Toluene U 0.278 1.00
1,2,3-Trichlorobenzene U 0.230 1.00
1,2,4-Trichlorobenzene U 0.481 1.00
1,1,1-Trichloroethane U 0.149 1.00
1,1,2-Trichloroethane U 0.158 1.00
Trichloroethene U 0.190 1.00
Trichlorofluoromethane U 0.160 5.00
1,2,3-Trichloropropane U 0.237 2.50
1,2,4-Trimethylbenzene U 0.322 1.00
1,3,5-Trimethylbenzene U 0.104 1.00
Vinyl chloride U 0.234 1.00
o-Xylene U 0.174 1.00
m&p-Xylenes U 0.430 2.00
(S) Toluene-d8 92.4 80.0-120
(S) 4-Bromofluorobenzene 85.8 77.0-126
(S) 1,2-Dichloroethane-d4 105 70.0-130
Laboratory Control Sample (LCS)
(LCS) R3887201-1 02/02/23 09:25
Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier
Analyte ug/l ug/l %%
Acetone 25.0 25.4 102 19.0-160
Acrolein 25.0 16.0 64.0 10.0-160
Acrylonitrile 25.0 22.6 90.4 55.0-149
Benzene 5.00 4.97 99.4 70.0-123
Bromobenzene 5.00 4.92 98.4 73.0-121
Bromodichloromethane 5.00 5.41 108 75.0-120
Bromoform 5.00 4.81 96.2 68.0-132
1 Cp
2Tc
3Ss
4Cn
5Ds
6Sr
7Qc
8Gl
9Al
10Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
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ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
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QUALITY CONTROL SUMMARYWG1998813
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 L1580131-01,02,03,04,05,06,07,08,09,10
Laboratory Control Sample (LCS)
(LCS) R3887201-1 02/02/23 09:25
Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier
Analyte ug/l ug/l %%
Bromomethane 5.00 5.62 112 10.0-160
n-Butylbenzene 5.00 4.95 99.0 73.0-125
sec-Butylbenzene 5.00 4.76 95.2 75.0-125
tert-Butylbenzene 5.00 4.51 90.2 76.0-124
Carbon tetrachloride 5.00 5.02 100 68.0-126
Chlorobenzene 5.00 4.64 92.8 80.0-121
Chlorodibromomethane 5.00 4.73 94.6 77.0-125
Chloroethane 5.00 5.63 113 47.0-150
Chloroform 5.00 5.53 111 73.0-120
Chloromethane 5.00 3.89 77.8 41.0-142
2-Chlorotoluene 5.00 4.89 97.8 76.0-123
4-Chlorotoluene 5.00 4.63 92.6 75.0-122
1,2-Dibromo-3-Chloropropane 5.00 4.30 86.0 58.0-134
1,2-Dibromoethane 5.00 4.87 97.4 80.0-122
Dibromomethane 5.00 5.16 103 80.0-120
1,2-Dichlorobenzene 5.00 5.10 102 79.0-121
1,3-Dichlorobenzene 5.00 5.17 103 79.0-120
1,4-Dichlorobenzene 5.00 5.21 104 79.0-120
Dichlorodifluoromethane 5.00 6.40 128 51.0-149
1,1-Dichloroethane 5.00 4.66 93.2 70.0-126
1,2-Dichloroethane 5.00 5.29 106 70.0-128
1,1-Dichloroethene 5.00 5.21 104 71.0-124
cis-1,2-Dichloroethene 5.00 4.78 95.6 73.0-120
trans-1,2-Dichloroethene 5.00 4.92 98.4 73.0-120
1,2-Dichloropropane 5.00 4.57 91.4 77.0-125
1,1-Dichloropropene 5.00 4.66 93.2 74.0-126
1,3-Dichloropropane 5.00 4.77 95.4 80.0-120
2,2-Dichloropropane 5.00 5.50 110 58.0-130
Di-isopropyl ether 5.00 4.21 84.2 58.0-138
Ethylbenzene 5.00 4.44 88.8 79.0-123
Hexachloro-1,3-butadiene 5.00 5.94 119 54.0-138
Isopropylbenzene 5.00 4.20 84.0 76.0-127
p-Isopropyltoluene 5.00 4.69 93.8 76.0-125
2-Butanone (MEK)25.0 25.1 100 44.0-160
Methylene Chloride 5.00 4.97 99.4 67.0-120
4-Methyl-2-pentanone (MIBK)25.0 22.9 91.6 68.0-142
Methyl tert-butyl ether 5.00 5.04 101 68.0-125
Naphthalene 5.00 4.28 85.6 54.0-135
n-Propylbenzene 5.00 4.53 90.6 77.0-124
Styrene 5.00 3.97 79.4 73.0-130
1 Cp
2Tc
3Ss
4Cn
5Ds
6Sr
7Qc
8Gl
9Al
10Sc
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QUALITY CONTROL SUMMARYWG1998813
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 L1580131-01,02,03,04,05,06,07,08,09,10
Laboratory Control Sample (LCS)
(LCS) R3887201-1 02/02/23 09:25
Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier
Analyte ug/l ug/l %%
1,1,1,2-Tetrachloroethane 5.00 4.79 95.8 75.0-125
1,1,2,2-Tetrachloroethane 5.00 5.39 108 65.0-130
Tetrachloroethene 5.00 4.99 99.8 72.0-132
Toluene 5.00 4.63 92.6 79.0-120
1,2,3-Trichlorobenzene 5.00 4.87 97.4 50.0-138
1,2,4-Trichlorobenzene 5.00 4.86 97.2 57.0-137
1,1,1-Trichloroethane 5.00 5.59 112 73.0-124
1,1,2-Trichloroethane 5.00 4.82 96.4 80.0-120
Trichloroethene 5.00 4.57 91.4 78.0-124
Trichlorofluoromethane 5.00 6.02 120 59.0-147
1,2,3-Trichloropropane 5.00 5.64 113 73.0-130
1,2,4-Trimethylbenzene 5.00 4.72 94.4 76.0-121
1,3,5-Trimethylbenzene 5.00 4.66 93.2 76.0-122
Vinyl chloride 5.00 4.45 89.0 67.0-131
o-Xylene 5.00 4.21 84.2 80.0-122
m&p-Xylenes 10.0 9.15 91.5 80.0-122
(S) Toluene-d8 92.4 80.0-120
(S) 4-Bromofluorobenzene 84.4 77.0-126
(S) 1,2-Dichloroethane-d4 108 70.0-130
1 Cp
2Tc
3Ss
4Cn
5Ds
6Sr
7Qc
8Gl
9Al
10Sc
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GLOSSARY OF TERMS
Guide to Reading and Understanding Your Laboratory Report
The information below is designed to better explain the various terms used in your report of analytical results from the Laboratory. This is not
intended as a comprehensive explanation, and if you have additional questions please contact your project representative.
Results Disclaimer - Information that may be provided by the customer, and contained within this report, include Permit Limits, Project Name,
Sample ID, Sample Matrix, Sample Preservation, Field Blanks, Field Spikes, Field Duplicates, On-Site Data, Sampling Collection Dates/Times, and
Sampling Location. Results relate to the accuracy of this information provided, and as the samples are received.
Abbreviations and Definitions
MDL Method Detection Limit.
RDL Reported Detection Limit.
Rec.Recovery.
RPD Relative Percent Difference.
SDG Sample Delivery Group.
(S)
Surrogate (Surrogate Standard) - Analytes added to every blank, sample, Laboratory Control Sample/Duplicate and
Matrix Spike/Duplicate; used to evaluate analytical efficiency by measuring recovery. Surrogates are not expected to be
detected in all environmental media.
U Not detected at the Reporting Limit (or MDL where applicable).
Analyte The name of the particular compound or analysis performed. Some Analyses and Methods will have multiple analytes
reported.
Dilution
If the sample matrix contains an interfering material, the sample preparation volume or weight values differ from the
standard, or if concentrations of analytes in the sample are higher than the highest limit of concentration that the
laboratory can accurately report, the sample may be diluted for analysis. If a value different than 1 is used in this field, the
result reported has already been corrected for this factor.
Limits
These are the target % recovery ranges or % difference value that the laboratory has historically determined as normal
for the method and analyte being reported. Successful QC Sample analysis will target all analytes recovered or
duplicated within these ranges.
Qualifier
This column provides a letter and/or number designation that corresponds to additional information concerning the result
reported. If a Qualifier is present, a definition per Qualifier is provided within the Glossary and Definitions page and
potentially a discussion of possible implications of the Qualifier in the Case Narrative if applicable.
Result
The actual analytical final result (corrected for any sample specific characteristics) reported for your sample. If there was
no measurable result returned for a specific analyte, the result in this column may state “ND” (Not Detected) or “BDL”
(Below Detectable Levels). The information in the results column should always be accompanied by either an MDL
(Method Detection Limit) or RDL (Reporting Detection Limit) that defines the lowest value that the laboratory could detect
or report for this analyte.
Uncertainty
(Radiochemistry)Confidence level of 2 sigma.
Case Narrative (Cn)
A brief discussion about the included sample results, including a discussion of any non-conformances to protocol
observed either at sample receipt by the laboratory from the field or during the analytical process. If present, there will
be a section in the Case Narrative to discuss the meaning of any data qualifiers used in the report.
Quality Control
Summary (Qc)
This section of the report includes the results of the laboratory quality control analyses required by procedure or
analytical methods to assist in evaluating the validity of the results reported for your samples. These analyses are not
being performed on your samples typically, but on laboratory generated material.
Sample Chain of
Custody (Sc)
This is the document created in the field when your samples were initially collected. This is used to verify the time and
date of collection, the person collecting the samples, and the analyses that the laboratory is requested to perform. This
chain of custody also documents all persons (excluding commercial shippers) that have had control or possession of the
samples from the time of collection until delivery to the laboratory for analysis.
Sample Results (Sr)
This section of your report will provide the results of all testing performed on your samples. These results are provided
by sample ID and are separated by the analyses performed on each sample. The header line of each analysis section for
each sample will provide the name and method number for the analysis reported.
Sample Summary (Ss)This section of the Analytical Report defines the specific analyses performed for each sample ID, including the dates and
times of preparation and/or analysis.
Qualifier Description
J The identification of the analyte is acceptable; the reported value is an estimate.
J3 The associated batch QC was outside the established quality control range for precision.
J4 The associated batch QC was outside the established quality control range for accuracy.
1 Cp
2Tc
3Ss
4Cn
5Ds
6Sr
7Qc
8Gl
9Al
10Sc
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ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
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Pace Analytical National 12065 Lebanon Rd Mount Juliet, TN 37122
Alabama 40660 Nebraska NE-OS-15-05
Alaska 17-026 Nevada TN000032021-1
Arizona AZ0612 New Hampshire 2975
Arkansas 88-0469 New Jersey–NELAP TN002
California 2932 New Mexico ¹TN00003
Colorado TN00003 New York 11742
Connecticut PH-0197 North Carolina Env375
Florida E87487 North Carolina ¹DW21704
Georgia NELAP North Carolina ³41
Georgia ¹923 North Dakota R-140
Idaho TN00003 Ohio–VAP CL0069
Illinois 200008 Oklahoma 9915
Indiana C-TN-01 Oregon TN200002
Iowa 364 Pennsylvania 68-02979
Kansas E-10277 Rhode Island LAO00356
Kentucky ¹ ⁶KY90010 South Carolina 84004002
Kentucky ²16 South Dakota n/a
Louisiana AI30792 Tennessee ¹ ⁴2006
Louisiana LA018 Texas T104704245-20-18
Maine TN00003 Texas ⁵LAB0152
Maryland 324 Utah TN000032021-11
Massachusetts M-TN003 Vermont VT2006
Michigan 9958 Virginia 110033
Minnesota 047-999-395 Washington C847
Mississippi TN00003 West Virginia 233
Missouri 340 Wisconsin 998093910
Montana CERT0086 Wyoming A2LA
A2LA – ISO 17025 1461.01 AIHA-LAP,LLC EMLAP 100789
A2LA – ISO 17025 ⁵1461.02 DOD 1461.01
Canada 1461.01 USDA P330-15-00234
EPA–Crypto TN00003
ACCREDITATIONS & LOCATIONS

¹ Drinking Water ² Underground Storage Tanks ³ Aquatic Toxicity ⁴ Chemical/Microbiological ⁵ Mold ⁶ Wastewater n/a Accreditation not applicable
* Not all certifications held by the laboratory are applicable to the results reported in the attached report.
* Accreditation is only applicable to the test methods specified on each scope of accreditation held by Pace Analytical.
1 Cp
2Tc
3Ss
4Cn
5Ds
6Sr
7Qc
8Gl
9Al
10Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC SLC1806802 L1580131 02/03/23 11:37 38 of 40
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC SLC1806802 L1580131 02/03/23 18:03 38 of 40
Former Auddie’s #4

ATC Project No. SLC1806802 NCDEQ State Lead Program

APPENDIX D

GSI MANN-KENDALL TOOLKITS

Evaluation Date:Job ID:
Facility Name:Constituent:
Conducted By:Concentration Units:ug/L
Sampling Point ID:Benzene Toluene Ethylbenzene Xylenes MTBE IPE Naphthalene
Sampling Sampling
Event Date
1 8/28/2000 20,300 26,000 2,080 11,900 66,000 815
2 11/20/2003 23,600 25,100 2,730 12,240 56,600 500
3 5/13/2015 19,000 27,000 2,100 19,600 32,000 970 30
4 7/13/2017 13,100 20,700 2,840 28,300 815 18,700 2,600
5 5/21/2019 14,300 22,000 1,740 18,500 13,800 673 886
6 11/6/2019 11,400 15,300 1,440 7,060 11,700 445 715
7 5/5/2020 9,810 15,200 1,570 14,500 13,100 630 1,380
8 1/24/2023 15,500 17,900 2,340 11,880 12,000 589 809
9
10
11
12
13
14
15
16
17
18
19
20
Coefficient of Variation:0.30 0.22 0.24 0.42 0.92 2.19 0.81
Mann-Kendall Statistic (S):-16 -18 -6 -4 -16 -8 1
Confidence Factor:96.9%98.4%72.6%64.0%96.9%80.1%50.0%
Concentration Trend:Decreasing Decreasing Stable Stable Decreasing No Trend No Trend
Notes:
1.At least four independent sampling events per well are required for calculating the trend. Methodology is valid for 4 to 40 samples.
2.Confidence in Trend = Confidence (in percent) that constituent concentration is increasing (S>0) or decreasing (S<0): >95% = Increasing or Decreasing;
≥ 90% = Probably Increasing or Probably Decreasing; < 90% and S>0 = No Trend; < 90%, S≤0, and COV ≥ 1 = No Trend; < 90% and COV < 1 = Stable.
3.Methodology based on "MAROS: A Decision Support System for Optimizing Monitoring Plans", J.J. Aziz, M. Ling, H.S. Rifai, C.J. Newell, and J.R. Gonzales,
Ground Water, 41(3):355-367, 2003.
DISCLAIMER: The GSI Mann-Kendall Toolkit is available "as is". Considerable care has been exercised in preparing this software product; however, no party, including without
limitation GSI Environmental Inc., makes any representation or warranty regarding the accuracy, correctness, or completeness of the information contained herein, and no such
party shall be liable for any direct, indirect, consequential, incidental or other damages resulting from the use of this product or the information contained herein. Information in
this publication is subject to change without notice. GSI Environmental Inc., disclaims any responsibility or obligation to update the information contained herein.
MW-2 CONCENTRATION (ug/L)
GSI Environmental Inc., www.gsi-net.com
GSI MANN-KENDALL TOOLKIT
for Constituent Trend Analysis
20-Feb-23 Incident #18068
Auddie's #4 MW-2
ATC Associates of North Carolina, P.C.
1
10
100
1000
10000
100000
07/98 04/01 01/04 10/06 07/09 04/12 12/14 09/17 06/20 03/23Concentration (ug/L)Sampling Date
Benzene
Toluene
Ethylbenzene
Xylenes
MTBE
IPE
Naphthalene
Evaluation Date:Job ID:
Facility Name:Constituent:
Conducted By:Concentration Units:ug/L
Sampling Point ID:1,2,4-TMB 1,3,5-TMB n-Butylbenzenen-Propylbenzene
Sampling Sampling
Event Date
1 8/28/2000
2 11/20/2003
3 5/13/2015 5,200 1,200 180 320
4 7/13/2017 11,900 3,390 859 840
5 5/21/2019 5,190 1,370 125 271
6 11/6/2019 1,880 454 125 125
7 5/5/2020 4,840 1,200 101 335
8 1/24/2023 2,920 777 250 271
9
10
11
12
13
14
15
16
17
18
19
20
Coefficient of Variation:0.66 0.74 1.07 0.68
Mann-Kendall Statistic (S):-9 -6 -4 -4
Confidence Factor:93.2%81.5%70.3%70.3%
Concentration Trend:Prob. Decreasing Stable No Trend Stable
Notes:
1.At least four independent sampling events per well are required for calculating the trend. Methodology is valid for 4 to 40 samples.
2.Confidence in Trend = Confidence (in percent) that constituent concentration is increasing (S>0) or decreasing (S<0): >95% = Increasing or Decreasing;
≥ 90% = Probably Increasing or Probably Decreasing; < 90% and S>0 = No Trend; < 90%, S≤0, and COV ≥ 1 = No Trend; < 90% and COV < 1 = Stable.
3.Methodology based on "MAROS: A Decision Support System for Optimizing Monitoring Plans", J.J. Aziz, M. Ling, H.S. Rifai, C.J. Newell, and J.R. Gonzales,
Ground Water, 41(3):355-367, 2003.
DISCLAIMER: The GSI Mann-Kendall Toolkit is available "as is". Considerable care has been exercised in preparing this software product; however, no party, including without
limitation GSI Environmental Inc., makes any representation or warranty regarding the accuracy, correctness, or completeness of the information contained herein, and no such
party shall be liable for any direct, indirect, consequential, incidental or other damages resulting from the use of this product or the information contained herein. Information in
this publication is subject to change without notice. GSI Environmental Inc., disclaims any responsibility or obligation to update the information contained herein.
MW-2 CONCENTRATION (ug/L)
GSI Environmental Inc., www.gsi-net.com
GSI MANN-KENDALL TOOLKIT
for Constituent Trend Analysis
20-Feb-23 Incident #18068
Auddie's #4 MW-2
ATC Associates of North Carolina, P.C.
1
10
100
1000
10000
100000
07/09 04/12 12/14 09/17 06/20 03/23Concentration (ug/L)Sampling Date
1,2,4-TMB
1,3,5-TMB
n-Butylbenzene
n-Propylbenzene
Evaluation Date:Job ID:
Facility Name:Constituent:
Conducted By:Concentration Units:ug/L
Sampling Point ID:Benzene Toluene Ethylbenzene Xylenes MTBE IPE Naphthalene
Sampling Sampling
Event Date
1 8/28/2000 6,400 13,800 1,300 1 5,050 234
2 11/20/2003 13,900 25,000 1,740 9,940 6,400 1,290
3 5/13/2015 10,000 6,600 1,600 8,100 4,300 300 12
4 7/13/2017 7,380 4,660 1,530 7,040 2,600 232 621
5 5/21/2019 6,090 3,290 1,460 5,840 2,000 187 487
6 11/6/2019 2,570 1,630 668 3,090 767 69.8 349
7 5/5/2020 3,820 2,000 1,020 4,340 1,210 118 331
8 1/24/2023 146 67.9 36.2 183.3 10.6 10.0 50.0
9
10
11
12
13
14
15
16
17
18
19
20
Coefficient of Variation:0.69 1.17 0.49 0.75 0.81 1.34 0.78
Mann-Kendall Statistic (S):-20 -24 -18 -12 -24 -22 -5
Confidence Factor:99.3%99.9%98.4%91.1%99.9%99.8%76.5%
Concentration Trend:Decreasing Decreasing Decreasing Prob. Decreasing Decreasing Decreasing Stable
Notes:
1.At least four independent sampling events per well are required for calculating the trend. Methodology is valid for 4 to 40 samples.
2.Confidence in Trend = Confidence (in percent) that constituent concentration is increasing (S>0) or decreasing (S<0): >95% = Increasing or Decreasing;
≥ 90% = Probably Increasing or Probably Decreasing; < 90% and S>0 = No Trend; < 90%, S≤0, and COV ≥ 1 = No Trend; < 90% and COV < 1 = Stable.
3.Methodology based on "MAROS: A Decision Support System for Optimizing Monitoring Plans", J.J. Aziz, M. Ling, H.S. Rifai, C.J. Newell, and J.R. Gonzales,
Ground Water, 41(3):355-367, 2003.
DISCLAIMER: The GSI Mann-Kendall Toolkit is available "as is". Considerable care has been exercised in preparing this software product; however, no party, including without
limitation GSI Environmental Inc., makes any representation or warranty regarding the accuracy, correctness, or completeness of the information contained herein, and no such
party shall be liable for any direct, indirect, consequential, incidental or other damages resulting from the use of this product or the information contained herein. Information in
this publication is subject to change without notice. GSI Environmental Inc., disclaims any responsibility or obligation to update the information contained herein.
MW-3 CONCENTRATION (ug/L)
GSI Environmental Inc., www.gsi-net.com
GSI MANN-KENDALL TOOLKIT
for Constituent Trend Analysis
20-Feb-23 Incident #18068
Auddie's #4 MW-3
ATC Associates of North Carolina, P.C.
0.1
1
10
100
1000
10000
100000
10/95 04/01 10/06 04/12 09/17 03/23Concentration (ug/L)Sampling Date
Benzene
Toluene
Ethylbenzene
Xylenes
MTBE
IPE
Naphthalene
Evaluation Date:Job ID:
Facility Name:Constituent:
Conducted By:Concentration Units:ug/L
Sampling Point ID:1,2,4-TMB 1,3,5-TMB n-Propylbenzene
Sampling Sampling
Event Date
1 8/28/2000
2 11/20/2003
3 5/13/2015 2,300 520 190
4 7/13/2017 1,790 480 189
5 5/21/2019 1,520 421 199
6 11/6/2019 908 270 92.8
7 5/5/2020 1,170 341 119
8 1/24/2023 42.3 23.2 5.61
9
10
11
12
13
14
15
16
17
18
19
20
Coefficient of Variation:0.61 0.53 0.57
Mann-Kendall Statistic (S):-13 -13 -9
Confidence Factor:99.2%99.2%93.2%
Concentration Trend:Decreasing Decreasing Prob. Decreasing
Notes:
1.At least four independent sampling events per well are required for calculating the trend. Methodology is valid for 4 to 40 samples.
2.Confidence in Trend = Confidence (in percent) that constituent concentration is increasing (S>0) or decreasing (S<0): >95% = Increasing or Decreasing;
≥ 90% = Probably Increasing or Probably Decreasing; < 90% and S>0 = No Trend; < 90%, S≤0, and COV ≥ 1 = No Trend; < 90% and COV < 1 = Stable.
3.Methodology based on "MAROS: A Decision Support System for Optimizing Monitoring Plans", J.J. Aziz, M. Ling, H.S. Rifai, C.J. Newell, and J.R. Gonzales,
Ground Water, 41(3):355-367, 2003.
DISCLAIMER: The GSI Mann-Kendall Toolkit is available "as is". Considerable care has been exercised in preparing this software product; however, no party, including without
limitation GSI Environmental Inc., makes any representation or warranty regarding the accuracy, correctness, or completeness of the information contained herein, and no such
party shall be liable for any direct, indirect, consequential, incidental or other damages resulting from the use of this product or the information contained herein. Information in
this publication is subject to change without notice. GSI Environmental Inc., disclaims any responsibility or obligation to update the information contained herein.
MW-3 CONCENTRATION (ug/L)
GSI Environmental Inc., www.gsi-net.com
GSI MANN-KENDALL TOOLKIT
for Constituent Trend Analysis
20-Feb-23 Incident #18068
Auddie's #4 MW-3
ATC Associates of North Carolina, P.C.
1
10
100
1000
10000
04/12 08/13 12/14 05/16 09/17 02/19 06/20 10/21 03/23 07/24 12/25Concentration (ug/L)Sampling Date
1,2,4-TMB
1,3,5-TMB
n-Propylbenzene
Evaluation Date:Job ID:
Facility Name:Constituent:
Conducted By:Concentration Units:ug/L
Sampling Point ID:Benzene Toluene Xylenes MTBE Naphthalene
Sampling Sampling
Event Date
1 7/4/2001 2,730 2,780 1,054 2.5
2 11/20/2003 465 991 748 180
3 5/13/2015 190 630 630 150 25
4 7/13/2017 15.1 2.5 22.2 0.41 0.25
5 5/21/2019 62.8 96.2 162 54.1 13.5
6 11/6/2019 118 65.0 188 38.3 19.9
7 5/5/2020 133 136 280 279 40.2
8
9
10
11
12
13
14
15
16
17
18
19
20
Coefficient of Variation:1.85 1.49 0.85 1.04 0.74
Mann-Kendall Statistic (S):-9 -11 -9 3 4
Confidence Factor:88.1%93.2%88.1%61.4%75.8%
Concentration Trend:No Trend Prob. Decreasing Stable No Trend No Trend
Notes:
1.At least four independent sampling events per well are required for calculating the trend. Methodology is valid for 4 to 40 samples.
2.Confidence in Trend = Confidence (in percent) that constituent concentration is increasing (S>0) or decreasing (S<0): >95% = Increasing or Decreasing;
≥ 90% = Probably Increasing or Probably Decreasing; < 90% and S>0 = No Trend; < 90%, S≤0, and COV ≥ 1 = No Trend; < 90% and COV < 1 = Stable.
3.Methodology based on "MAROS: A Decision Support System for Optimizing Monitoring Plans", J.J. Aziz, M. Ling, H.S. Rifai, C.J. Newell, and J.R. Gonzales,
Ground Water, 41(3):355-367, 2003.
DISCLAIMER: The GSI Mann-Kendall Toolkit is available "as is". Considerable care has been exercised in preparing this software product; however, no party, including without
limitation GSI Environmental Inc., makes any representation or warranty regarding the accuracy, correctness, or completeness of the information contained herein, and no such
party shall be liable for any direct, indirect, consequential, incidental or other damages resulting from the use of this product or the information contained herein. Information in
this publication is subject to change without notice. GSI Environmental Inc., disclaims any responsibility or obligation to update the information contained herein.
MW-6 CONCENTRATION (ug/L)
GSI Environmental Inc., www.gsi-net.com
GSI MANN-KENDALL TOOLKIT
for Constituent Trend Analysis
20-Feb-23 Incident #18068
Auddie's #4 MW-6
ATC Associates of North Carolina, P.C.
0.1
1
10
100
1000
10000
07/98 04/01 01/04 10/06 07/09 04/12 12/14 09/17 06/20 03/23Concentration (ug/L)Sampling Date
Benzene
Toluene
Xylenes
MTBE
Naphthalene
Evaluation Date:Job ID:
Facility Name:Constituent:
Conducted By:Concentration Units:ug/L
Sampling Point ID:Benzene Toluene Ethylbenzene Xylenes MTBE IPE Naphthalene
Sampling Sampling
Event Date
1 7/4/2001 9,640 26,400 2,070 10,620 250 250
2 11/20/2003 7,000 23,600 3,120 13,490 25 25
3 7/2/2015 14,000 13,000 2,500 12,600 370 5,400 440
4 1/27/2021 277 61.7 26.0 1,110 133 8.4 255
5 1/24/2023 75.5 10.5 11.7 141.45 27.7 10.0 81.9
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
Coefficient of Variation:0.97 0.99 0.93 0.85 0.92 2.09 0.69
Mann-Kendall Statistic (S):-6 -10 -6 -6 -2 -4 -3
Confidence Factor:88.3%99.2%88.3%88.3%59.2%75.8%
Concentration Trend:Stable Decreasing Stable Stable Stable No Trend
Notes:
1.At least four independent sampling events per well are required for calculating the trend. Methodology is valid for 4 to 40 samples.
2.Confidence in Trend = Confidence (in percent) that constituent concentration is increasing (S>0) or decreasing (S<0): >95% = Increasing or Decreasing;
≥ 90% = Probably Increasing or Probably Decreasing; < 90% and S>0 = No Trend; < 90%, S≤0, and COV ≥ 1 = No Trend; < 90% and COV < 1 = Stable.
3.Methodology based on "MAROS: A Decision Support System for Optimizing Monitoring Plans", J.J. Aziz, M. Ling, H.S. Rifai, C.J. Newell, and J.R. Gonzales,
Ground Water, 41(3):355-367, 2003.
DISCLAIMER: The GSI Mann-Kendall Toolkit is available "as is". Considerable care has been exercised in preparing this software product; however, no party, including without
limitation GSI Environmental Inc., makes any representation or warranty regarding the accuracy, correctness, or completeness of the information contained herein, and no such
party shall be liable for any direct, indirect, consequential, incidental or other damages resulting from the use of this product or the information contained herein. Information in
this publication is subject to change without notice. GSI Environmental Inc., disclaims any responsibility or obligation to update the information contained herein.
MW-7/MW-7R CONCENTRATION (ug/L)
GSI Environmental Inc., www.gsi-net.com
GSI MANN-KENDALL TOOLKIT
for Constituent Trend Analysis
20-Feb-23 Incident #18068
Auddie's #4 MW-7/MW-7R
ATC Associates of North Carolina, P.C.
1
10
100
1000
10000
100000
07/98 04/01 01/04 10/06 07/09 04/12 12/14 09/17 06/20 03/23 12/25Concentration (ug/L)Sampling Date
Benzene
Toluene
Ethylbenzene
Xylenes
MTBE
IPE
Naphthalene
Evaluation Date:Job ID:
Facility Name:Constituent:
Conducted By:Concentration Units:ug/L
Sampling Point ID:1,2,4-TMB 1,2-DCA
Sampling Sampling
Event Date
1 7/4/2001 50
2 11/20/2003
3 7/2/2015 2,700 300
4 1/27/2021 637 1
5 1/24/2023 91.1 10.0
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
Coefficient of Variation:1.20 1.57
Mann-Kendall Statistic (S):-3 -2
Confidence Factor:62.5%
Concentration Trend:No Trend
Notes:
1.At least four independent sampling events per well are required for calculating the trend. Methodology is valid for 4 to 40 samples.
2.Confidence in Trend = Confidence (in percent) that constituent concentration is increasing (S>0) or decreasing (S<0): >95% = Increasing or Decreasing;
≥ 90% = Probably Increasing or Probably Decreasing; < 90% and S>0 = No Trend; < 90%, S≤0, and COV ≥ 1 = No Trend; < 90% and COV < 1 = Stable.
3.Methodology based on "MAROS: A Decision Support System for Optimizing Monitoring Plans", J.J. Aziz, M. Ling, H.S. Rifai, C.J. Newell, and J.R. Gonzales,
Ground Water, 41(3):355-367, 2003.
DISCLAIMER: The GSI Mann-Kendall Toolkit is available "as is". Considerable care has been exercised in preparing this software product; however, no party, including without
limitation GSI Environmental Inc., makes any representation or warranty regarding the accuracy, correctness, or completeness of the information contained herein, and no such
party shall be liable for any direct, indirect, consequential, incidental or other damages resulting from the use of this product or the information contained herein. Information in
this publication is subject to change without notice. GSI Environmental Inc., disclaims any responsibility or obligation to update the information contained herein.
MW-7/MW-7R CONCENTRATION (ug/L)
GSI Environmental Inc., www.gsi-net.com
GSI MANN-KENDALL TOOLKIT
for Constituent Trend Analysis
20-Feb-23 Incident #18068
Auddie's #4 MW-7/MW-7R
ATC Associates of North Carolina, P.C.
1
10
100
1000
10000
07/98 04/01 01/04 10/06 07/09 04/12 12/14 09/17 06/20 03/23 12/25Concentration (ug/L)Sampling Date
1,2,4-TMB
1,2-DCA
Evaluation Date:Job ID:
Facility Name:Constituent:
Conducted By:Concentration Units:ug/L
Sampling Point ID:Benzene MTBE
Sampling Sampling
Event Date
1 8/1/2018 15.9 1,760
2 5/21/2019 0.25 0.69
3 11/6/2019 21.6 225
4 5/5/2020 0.25 11.4
5 1/24/2023 0.5 24.5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
Coefficient of Variation:1.34 1.89
Mann-Kendall Statistic (S):-1 -2
Confidence Factor:50.0%59.2%
Concentration Trend:No Trend No Trend
Notes:
1.At least four independent sampling events per well are required for calculating the trend. Methodology is valid for 4 to 40 samples.
2.Confidence in Trend = Confidence (in percent) that constituent concentration is increasing (S>0) or decreasing (S<0): >95% = Increasing or Decreasing;
≥ 90% = Probably Increasing or Probably Decreasing; < 90% and S>0 = No Trend; < 90%, S≤0, and COV ≥ 1 = No Trend; < 90% and COV < 1 = Stable.
3.Methodology based on "MAROS: A Decision Support System for Optimizing Monitoring Plans", J.J. Aziz, M. Ling, H.S. Rifai, C.J. Newell, and J.R. Gonzales,
Ground Water, 41(3):355-367, 2003.
DISCLAIMER: The GSI Mann-Kendall Toolkit is available "as is". Considerable care has been exercised in preparing this software product; however, no party, including without
limitation GSI Environmental Inc., makes any representation or warranty regarding the accuracy, correctness, or completeness of the information contained herein, and no such
party shall be liable for any direct, indirect, consequential, incidental or other damages resulting from the use of this product or the information contained herein. Information in
this publication is subject to change without notice. GSI Environmental Inc., disclaims any responsibility or obligation to update the information contained herein.
MW-6 CONCENTRATION (ug/L)
GSI Environmental Inc., www.gsi-net.com
GSI MANN-KENDALL TOOLKIT
for Constituent Trend Analysis
20-Feb-23 Incident #18068
Auddie's #4 MW-10
ATC Associates of North Carolina, P.C.
0.1
1
10
100
1000
10000
04/18 10/18 05/19 12/19 06/20 01/21 07/21 02/22 08/22 03/23 10/23Concentration (ug/L)Sampling Date
Benzene
MTBE
Evaluation Date:Job ID:
Facility Name:Constituent:
Conducted By:Concentration Units:ug/L
Sampling Point ID:Benzene Toluene Xylenes MTBE IPE
Sampling Sampling
Event Date
1 8/28/2000 7,500 6,400 4,500 46,000 660
2 11/20/2003 158 23 60.5 34,400 420
3 5/13/2015 0.2 0.25 0.29 8.2 0.27
4 7/13/2017 1.5 0.10 0.30 5.7 0.42
5 5/21/2019 0.25 0.25 0.25 5.4 0.25
6 1/24/2023 0.5 0.5 1.5 5.32 0.118
7
8
9
10
11
12
13
14
15
16
17
18
19
20
Coefficient of Variation:2.39 2.44 2.41 1.57 1.60
Mann-Kendall Statistic (S):-7 -6 -7 -15 -13
Confidence Factor:86.4%81.5%86.4%99.9%99.2%
Concentration Trend:No Trend No Trend No Trend Decreasing Decreasing
Notes:
1.At least four independent sampling events per well are required for calculating the trend. Methodology is valid for 4 to 40 samples.
2.Confidence in Trend = Confidence (in percent) that constituent concentration is increasing (S>0) or decreasing (S<0): >95% = Increasing or Decreasing;
≥ 90% = Probably Increasing or Probably Decreasing; < 90% and S>0 = No Trend; < 90%, S≤0, and COV ≥ 1 = No Trend; < 90% and COV < 1 = Stable.
3.Methodology based on "MAROS: A Decision Support System for Optimizing Monitoring Plans", J.J. Aziz, M. Ling, H.S. Rifai, C.J. Newell, and J.R. Gonzales,
Ground Water, 41(3):355-367, 2003.
DISCLAIMER: The GSI Mann-Kendall Toolkit is available "as is". Considerable care has been exercised in preparing this software product; however, no party, including without
limitation GSI Environmental Inc., makes any representation or warranty regarding the accuracy, correctness, or completeness of the information contained herein, and no such
party shall be liable for any direct, indirect, consequential, incidental or other damages resulting from the use of this product or the information contained herein. Information in
this publication is subject to change without notice. GSI Environmental Inc., disclaims any responsibility or obligation to update the information contained herein.
VEW-1 CONCENTRATION (ug/L)
GSI Environmental Inc., www.gsi-net.com
GSI MANN-KENDALL TOOLKIT
for Constituent Trend Analysis
20-Feb-23 Incident #18068
Auddie's #4 VEW-1
ATC Associates of North Carolina, P.C.
0.1
1
10
100
1000
10000
100000
07/98 04/01 01/04 10/06 07/09 04/12 12/14 09/17 06/20 03/23 12/25Concentration (ug/L)Sampling Date
Benzene
Toluene
Xylenes
MTBE
IPE