DC510004_20240521_SG & GWMR

AECOM Technical Services of North Carolina, Inc. [phone] tel
5438 Wade Park Boulevard, Suite 200
Raleigh, NC 27607

May 21, 2024

North Carolina Department of Environmental Quality
Division of Waste Management – DSCA Program
1646 Mail Service Center
Raleigh, NC 27699-1646

Att: Ms. Ariana Rivera
DSCA Project Manager

Re: Soil Gas Assessment and Groundwater Monitoring Report Submittal
Barrett’s Cleaners, DSCA Site ID DC510004
261 NC Highway 42 East
Clayton, Johnston County, North Carolina

Dear Ms. Rivera:

AECOM Technical Services of North Carolina, Inc. (AECOM) is pleased to provide the attached Soil Gas
Assessment and Groundwater Monitoring Report for the Barrett’s Cleaners, DSCA Site ID DC510004, (site)
located at 261 NC Highway 42 East in Clayton, North Carolina. Specifically, this report includes
documentation pertaining to site assessment activities completed from October 19, 2023, through April 24,
2024, in accordance with Change Order B to State Lead Authorization for Work (SLAW) 001 and SLAW
002, both approved by DSCA on December 16, 2022. A Site Chronology is included as Analytical Data
Table (ADT) 1, a Site Location Map is included as Figure 1, and a Site Layout Map is included as Figure
2.

Groundwater, soil, and vapor quality assessment activities were initiated at the site in October and
November 2021, as documented in the Prioritization Assessment Report, dated February 14, 2022.
Additional assessment activities including the installation of monitoring wells MW-4 and MW-5, pore and
surface water sampling, and soil gas sampling were completed at the site in July 2022, as documented in
the October 2022 Updated Assessment Report. As indicated on Figure 3, sub-slab vapor quality at the
SSV-2 location indicates acceptable calculated risk for both residential and non-residential worker exposure
in the adjacent Papa John’s pizzeria tenant space. In addition, soil gas samples SG-2, SG-3 and SG-4
indicate acceptable calculated risk for both residential and non-residential worker exposure; however, the
results from soil gas sample SG-1 (collected from behind [northwest of] the dry-cleaning facility), indicate
unacceptable calculated risk for residential exposure.

As the results from soil gas sample SG-1 indicate unacceptable calculated risk for residential exposure,
AECOM collected one additional soil gas sample (SG-5) from the location depicted on Figure 3 on October
20, 2023, to further define the northern extent of where restrictions may be necessary to manage future
vapor intrusion risks. Prior to advancing the soil boring for the SG-5 sample location, AECOM oversaw
locating and demarcation of underground utilities by ESP Associates, Inc. (ESP). A stainless-steel AMS
vapor implant was installed such that the top of the intake screen was approximately five feet below ground
surface (ft bgs). A leak check and helium tracer gas monitoring technique were incorporated as part of the
collection of the soil gas sample to evaluate if the sample was isolated from ambient air, in accordance with
AECOM Soil Gas Sampling Standard Operating Procedures (SOPs), provided in Appendix A. Soil gas
sample SG-5 was collected into a batch-certified, 1.3-liter, stainless steel summa canister with a 200 cubic
centimeter per minute (cc/min) flow controller, and was transported by lab courier under chain-of-custody
from AECOM to Enthalpy Analytical (Enthalpy) in Durham, North Carolina for laboratory analysis of DSCA
site-specific volatile organic compounds (VOCs) via United States Environmental Protection Agency
(USEPA) Method TO-15.

The laboratory analytical report for the October 2023 soil gas sample (SG-5) is included as Appendix B,
and results are summarized in ADT 4 and on Figure 3. As summarized on the following table, the results

Ms. Ariana Rivera
Barrett’s Cleaners – DC510004
May 21, 2024
Page 2 of 4
of the October 2023 soil gas sampling event indicate acceptable calculated cumulative carcinogenic and
non-carcinogenic risks for residential and non-residential use at the SG-5 sampling location.

Sample ID Sample Date
Cumulative Risk: Cumulative Risk:
Resident Non-Residential Worker
CR HI CR HI
SG-5 10/20/23 1.2E-06 3.2E-01 9.2E-08 2.5E-02
CR = Calculated cumulative carcinogenic risk; acceptable calculated risk values are less than 1E-04.
HI = Calculated non-carcinogenic hazard quotient; acceptable hazard index values are less than 1.0.
Red = Value does not exceed acceptable CR or HI

DSCA Soil Gas Risk Calculators for residential and non-residential use are provided as Appendix C.

In accordance with the scope of work approved under SLAW 002 on December 16, 2022, AECOM
completed three quarterly groundwater quality monitoring events on October 19, 2023, January 19, 2024,
and April 24, 2024, to evaluate groundwater contaminant plume dynamics and stability. An unrelated
groundwater monitoring event was conducted at the adjacent Speedway #8299 site on August 17, 2023, in
relation to Underground Storage Tank (UST) Incident No.: 420007, as reported in a Groundwater Monitoring
Report prepared by AECOM, dated November 29, 2023. The location of the Speedway #8299, associated
monitoring well locations, and analytical results from the November 2023 groundwater monitoring event at
the Speedway site are depicted on Figure 4 for reference.

During the October 19, 2023, January 19, 2024, and April 24, 2024, groundwater monitoring events,
groundwater depth was gauged in each well prior to sampling using an electronic water-level meter and
groundwater sample collection was completed using disposable polyethylene bailers in accordance with
AECOM Groundwater Sampling Using Bailers SOP (provided in Appendix A). Monitoring well construction
details are included in ADT 6, and depth-to-water measurements and groundwater elevation data are
included in ADT 7. Each groundwater sample was collected into laboratory supplied sample containers,
immediately placed in a cooler on wet ice, and transported under chain of custody to Pace Analytical (Pace)
for laboratory analysis of VOCs by USEPA Method 8260D. Groundwater analytical results are summarized
in ADT 8 and presented on Figures 4 through 6. Copies of the laboratory analytical reports are included in
Appendix B.

As depicted on Figures 7 through 9, groundwater flow beneath the site appears to be generally oriented to
the southeast, towards an unnamed drainage feature flowing southeast towards a large retention pond
located approximately 900 feet southeast of the site. Groundwater contaminant concentrations,
summarized in ADT 8 and on Figures 4 through 6, indicate that the orientation of the groundwater
contaminant plume is also generally towards the southeast and consistent with the direction of groundwater
flow. Tetrachloroethylene (PCE) was detected at concentrations above the NCAC Groundwater Quality 2L
Standard (2L Standard) of 0.7 µg/l in samples from monitoring wells MW-1 and MW-2 during each sampling
event, in MW-4 during the October 2023 event, and in MW-3 during the January 2024 event.
Trichloroethene (TCE) was also detected at concentrations above the 2L Standard in monitoring well MW-
2 during each sampling event. DSCA Groundwater Monitoring Report Forms are included as Appendix D.

Groundwater contaminant concentrations for each monitoring well with detections sampled in October
2023, January 2024, and April 2024 were entered into the DSCA Groundwater to Indoor Air risk calculators,
included as Appendix C, which indicate the following:

Ms. Ariana Rivera
Barrett’s Cleaners – DC510004
May 21, 2024
Page 3 of 4
Sample
ID Sample Location Sample
Date
Cumulative Risk (July 2023 Risk Calculator)
Resident Non-Residential Worker
CR HI CR HI
MW-1
261 NC Hwy 42 E
10/19/2023
1.90E-06 0.39 4.40E-07 0.094
MW-2 6.2E-05 15 1.3E-05 3.6
MW-3 1.6E-07 0.00019 3.6E-08 0.000045
MW-4 NC Hwy 42 E ROW 2.0E-07 0.021 4.6E-08 0.005
MW-5 261 NC Hwy 42 E ND ND ND ND
MW-1
261 NC Hwy 42 E
1/19/2024
5.6E-07 0.086 1.3E-07 0.021
MW-2 1.7E-04 23 3.8E-05 5.5
MW-3 3.8E-07 0.041 8.6E-08 0.0096
MW-4 NC Hwy 42 E ROW 7.8E-05 0.00014 1.8E-05 0.000033
MW-5 261 NC Hwy 42 E 8.0E-05 0 1.8E-05 0
MW-1
261 NC Hwy 42 E
4/24/2024
1.20E-06 0.31 2.70E-07 0.073
MW-2 6.4E-05 16 1.3E-05 3.8
MW-3 ND ND ND ND
MW-4 NC Hwy 42 E ROW ND ND ND ND
MW-5 261 NC Hwy 42 E ND ND ND ND
CR = Calculated cumulative carcinogenic risk; acceptable calculated risk values are less than 1E-04.
HI = Calculated non-carcinogenic hazard quotient; acceptable hazard index values are less than 1.0.
ND = No compounds detected above laboratory method detection limits
ROW = Right-Of-Way
Green = Acceptable CR or HI
Red = Value exceeds acceptable CR or HI

As summarized above and depicted on Figures 4 through 6, groundwater contaminant concentrations in
samples from monitoring well MW-2 exceed acceptable calculated vapor intrusion risk for residential and
non-residential worker exposure. With respect to current exposure risk in the vicinity of monitoring well MW-
2, the nearest structure is the commercial strip mall shopping center in which the Barrett’s Cleaners is the
end unit, and indoor air samples collected from both the adjacent Papa John’s Pizza (IA-2) and Barrett’s
Cleaners (IA-1) tenant spaces (as shown on Figure 3) indicate acceptable calculated risk for both
residential and non-residential worker exposure.

AECOM received Pace’s laboratory report (L1668457) for the October 2023 sampling event on October 27,
2023. Based on AECOM’s review of the laboratory report, Pace did not identify any quality
assurance/quality control issues associated with the data, and the data are deemed usable for the purposes
of the assessment activities and conclusions documented in this submittal. However, AECOM identified a
sample identification error regarding samples from monitoring wells MW-2 and MW-4 and requested the
lab report be corrected and reissued, based on a review of field notes and concentrations in each well prior
and to date.

AECOM received Pace’s laboratory report (L1697605) for the January 2024 sampling event on January 29,
2024. Based on AECOM’s review of the laboratory report, Pace did not identify any quality

Ms. Ariana Rivera
Barrett’s Cleaners – DC510004
May 21, 2024
Page 4 of 4
assurance/quality control issues associated with the data, and the data are deemed usable for the purposes
of the assessment activities and conclusions documented in this submittal.

AECOM received Pace’s laboratory report (92727559) for the April 2024 sampling event on May 3, 2024.
Based on AECOM’s review of the laboratory report, Pace did not identify any quality assurance/quality
control issues associated with the data, and the data are deemed usable for the purposes of the assessment
activities and conclusions documented in this submittal.

AECOM received Enthalpy’s laboratory report (1023-118) on November 6, 2023. Based on AECOM’s
review of the laboratory reports, Enthalpy did not identify any quality assurance/quality control issues
associated with the data, and the data are deemed usable for the purposes of the assessment activities
and conclusions documented in this submittal.

If you have any questions or require additional information, please do not hesitate to call either Rob
MacWilliams at 704-522-0330 or Stephanie Hempel at 919-461-1100.

Sincerely,

AECOM TECHNICAL SERVICES OF NORTH CAROLINA, INC.

Stephanie Hempel, PG Robert H. MacWilliams, PG
Project Manager Program Manager

Enclosures
DSCA ID No.:
Submittal Date:
Analytical Data Tables
for
North Carolina Dry-Cleaning Solvent Cleanup Act Program
Prepared By:
Facility Name:Barrett's Cleaners
261 NC Highway 42 East, Clayton, Johnston County, North Carolina
5438 Wade Park Boulevard, Suite 200, Raleigh, NC 27607
AECOM Technical Services of North Carolina, Inc.
May 2024
DC510004
Table of Contents
DSCA ID No.: DC510004
Table/
Att. No.
Check box
if included
Table 1 Site Chronology
Table 2 Analytical Data for Soil
Table 3 Analytical Data for Sub-slab Gas
Table 4 Analytical Data for Soil Gas
Table 5 Analytical Data for Indoor and Outdoor Air
Table 6 Monitoring Well Construction Data
Table 7 Groundwater Elevation Data
Table 8 Analytical Data for Groundwater
Table 9 Analytical Data for Surface Water
Table 10 Water Well(s) Survey Data
Table 11 Analytical Data for Water Supply Well(s)
Table 12 Analytical Data for Natural Attenuation Parameters
Figure 1 Site Location Map
Figure 2
Figure 3 Vapor Quality Summary Map
Figure 4 Groundwater Quality Summary Map - October 19, 2023
Figure 5
Figure 6
Figure 7
Figure 8
Figure 9
App. A
App. B Laboratory Analytical Reports
App. C
App. D
Note:
1. All maps must include a bar scale, north arrow, site name, DSCA ID No., and date.
ADT TOC
Description
Attachments
Tables
AECOM Standard Operating Procedures
Site Layout Map
Groundwater Quality Summary Map - January 19, 2024
DSCA Risk Calculator Worksheets
DSCA Groundwater Monitoring Report Forms
Appendices
Groundwater Quality Summary Map - April 24, 2024
Groundwater Contour Map - October 19, 2023
Groundwater Contour Map - January 19, 2024
Groundwater Contour Map - April 24, 2024
Table 1: Site Chronology
DSCA ID No.: DC510004
Chronology of Events
3/4/2019 Phase II Environmental Site Assessment Letter prepared by Terraquest Environmental Consultants, P.C. documents
elevated PCE and TCE levels in soil and groundwater on the site property.
6/9/2021 The Barrett's Cleaners site is certified into the DSCA Program.
10/25 - 11/8/2021
AECOM performs Prioritization Assessment activities at the site, including utility locating and markout; advancement
and sampling of five (5) soil borings (SB-2 through SB-4, SB-6, and SB-7); installation and sampling of three (3) Type
II groundwater monitoring wells (MW-1 through MW-3); collection of one (1) subslab vapor sample (SSV-1); and
completion of a 0.5-maile receptor survey.
5/24/2022 AECOM collects 8-hour indoor air samples from within the Barrett's Cleaners dry-cleaning facility, as it no longer uses
PCE in it's operation, and the adjacent Papa John's pizzeria.
7/14-19/2022
AECOM performs additional assessment activities at the site, including utility locating and markout; advancement and
sampling of five (5) soil borings (SB-8 through SB-12); installation of two (2) Type II groundwater monitoring wells
(MW-4 and MW-5); collection of one (1) subslab vapor sample (SSV-2) and four (4) soil gas samples (SG-1 through SG-
4); collection of one (1) pore water sample and one (1) surface water sample; and completion of a comprehensive
groundwater gauging and sampling event including exisiting and newly installed site monitoring wells MW-1 through
MW-5.
10/19-20/2023
AECOM completes a comprehensive groundwater monitoring event including gauging and sampling all site monitoring
wells (MW-1 through MW-5), performs rising head recovery tests at monitoring wells MW-1, MW-4, and MW-5, and
collects soil gas sample SG-5.
1/19/2024 AECOM completes a comprehensive groundwater monitoring event including gauging and sampling all site monitoring
wells (MW-1 through MW-5).
4/24/2024 AECOM completes a comprehensive groundwater monitoring event including gauging and sampling all site monitoring
wells (MW-1 through MW-5).
Instructions: Brief description of all significant events that have occurred since a problem was
suspected at the facility. Commence with the first date a problem was suspected and continue
through the most recent activity described in the current report.
Date
ADT 1
Table 2: Analytical Data for Soil
DSCA ID No.: DC510004
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SB-1 1.75-2 2/21/19 <0.017 0.16 <0.020 <0.029 <0.026 1.6 <0.024 <0.036 0.41 <0.024 <0.055 1.7 J <0.076
SB-2 4.5-5 10/28/21 < 0.0011 0.0067 < 0.0011 < 0.0011 < 0.0011 0.025 < 0.0011 < 0.0011 0.011 < 0.0011 < 0.0023 0.053 < 0.0057
SB-3 1-2 10/28/21 < 0.00081 0.0023 < 0.00081 < 0.00081 < 0.00081 0.00089 < 0.00081 < 0.00081 < 0.00081 < 0.00081 < 0.0016 0.037 < 0.0041
SB-4 1-2 10/28/21 < 0.0012 < 0.0012 < 0.0012 < 0.0012 < 0.0012 < 0.0015 < 0.0012 < 0.0012 < 0.0012 < 0.0012 < 0.0024 0.078 < 0.0060
SB-6 3-4 10/28/21 < 0.0012 < 0.0012 < 0.0012 < 0.0012 < 0.0012 < 0.0012 0.00060 J < 0.0012 < 0.0012 < 0.0012 < 0.0023 < 0.023 < 0.0058
SB-7 3.5-4.5 10/28/21 < 0.0011 0.0025 < 0.0011 < 0.0011 < 0.0011 0.12 < 0.0011 < 0.0011 0.083 < 0.0011 < 0.0022 0.094 0.0085
SB-8 1-2 7/14/2022 < 0.0011 < 0.0011 < 0.0011 < 0.0011 < 0.0011 < 0.0011 < 0.0011 < 0.0011 < 0.0011 < 0.0011 < 0.0034 < 0.022 < 0.0056
SB-9 2-3 7/14/2022 < 0.0011 < 0.0011 < 0.0011 < 0.0011 < 0.0011 0.03 < 0.0011 < 0.0011 < 0.0011 < 0.0011 < 0.0032 < 0.022 < 0.0056
SB-10 4-5 7/14/2022 < 0.0012 < 0.0012 < 0.0012 < 0.0012 < 0.0012 0.00054 J < 0.0012 < 0.0012 < 0.0012 < 0.0012 < 0.0036 < 0.022 < 0.0056
SB-11 3-4 7/15/2022 < 0.0012 < 0.0012 < 0.0012 < 0.0012 < 0.0012 < 0.0012 < 0.0012 < 0.0012 < 0.0012 < 0.0012 < 0.0035 < 0.022 < 0.0056
SB-12 4-5 7/15/2022 < 0.0012 < 0.0012 < 0.0012 < 0.0012 < 0.0012 < 0.0012 < 0.0012 < 0.0012 < 0.0012 < 0.0012 < 0.0036 < 0.022 < 0.0056
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ADT 2
Table 3: Analytical Data for Sub-slab Gas
DSCA ID No.: DC510004
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SSV-1 24 6 0.5 h 11/10/21 NA 940 NA NA NA 2,600 NA 85 1,000 0.39 J NA
SSV-2 10 6 0.5 h 7/14/22 NA < 0.79 NA NA NA 650 NA < 0.79 2.3 < 0.51 NA
1 Indicate "G" for grab sample or for longer samples indicate the number of hours followed by "h".
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ADT 3
Table 4: Analytical Data for Soil Gas
DSCA ID No.: DC510004
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SG-1 5 0.5 h 7/14/22 NA < 4.3 NA NA NA 6,700 NA < 4.7 < 5.4 < 3.5 NA
SG-2 5 0.5 h 7/14/22 NA < 0.58 NA NA NA 930 NA < 0.62 < 0.72 < 0.46 NA
SG-3 5 0.5 h 7/14/22 NA < 0.58 NA NA NA 3.0 NA < 0.62 < 0.72 < 0.46 NA
SG-4 5 0.5 h 7/14/22 NA < 0.58 NA NA NA 4.0 NA < 0.62 < 0.72 < 0.46 NA
SG-5 5 0.5 h 10/20/23 NA < 0.58 NA NA NA 61 NA < 0.62 0.238 < 0.46 NA
1 Indicate "G" for grab sample or for longer samples indicate the number of hours followed by "h".
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ADT 4
Table 5: Analytical Data for Indoor and Outdoor Air
DSCA ID No.: DC510004
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IA-1 05/24/22 F SU 8 h NA < 0.10 NA NA NA 0.63 NA < 0.11 < 0.13 <
0.081 NA
IA-2 05/24/22 AD SU 8 h NA < 0.10 NA NA NA 0.36 NA < 0.11 < 0.13 <
0.081 NA
Notes:
1 Indicate "F" for former or current dry-cleaning facility, "AD" for adjacent space, "R" for residence, "C" for commercial not adjacent space. If sample was taken outdoors, leave blank.
2 Indicate "SU" for summa canister, "FC" for flux chambers, "T" for tedlar bags, "P" for passive samplers, "O" for other.
3 Indicate "8h" for 8-hour, "24h" for 24-hour, "G" for grab sample, for other hours indicate the number of hours followed by "h" or "d" for days.
Sa
m
p
l
e

I
D
Sa
m
p
l
i
n
g

D
a
t
e

(
m
m
/
d
d
/
y
y
)
[µg/m3]Sa
m
p
l
e

L
o
c
a
t
i
o
n

1
Sa
m
p
l
i
n
g

D
u
r
a
t
i
o
n
3
Sa
m
p
l
i
n
g

M
e
t
h
o
d

2
ADT 5
Table 5(2): Additional Data for Indoor and Outdoor Air
DSCA ID No.: DC510004
Attachment:
Is dry-cleaning facility at the site: Operating Pick-up Only Abandoned
If facility is operating, solvents used are: Perc Petroleum Green Earth Other
For the active or former dry-cleaning space, describe the type and location of the air handling/HVAC unit (for example - a shared unit supplying two adjacent spaces; unit located on the roof):
The active dry-cleaner has a single HVAC unit located on the ground behind the facility.
For any other indoor spaces tested, describe the type and location of the air handling/HVAC unit (for example - a shared unit supplying two adjacent spaces; unit located on the roof):
For any indoor air spaces tested, describe the current use of the space (for example - an ABC liquor store adjacent to the dry-cleaner, a residence approximately 200 feet from the dry-cleaner, etc.):
The Papa John's pizzeria is located adjacent to the dry-cleaner in a strip mall.
Sampling location map that indicates where all indoor air samples were collected. The map should clearly indicate the names/types of businesses and residence names sampled and in the vicinity of the
subject site that may be of concern.
The Papa John's pizzeria has a single HVAC unit located on the ground behind the facility.
ADT 5(2)
DF-2000
Table 5(3): Additional Data for Indoor and Outdoor Air
DSCA ID No.: DC510004
Sample ID Name and Address for Sampling Location Property Owner Name, Address, and Phone Number Tenant Name, Address, and Phone Number
IA-1
Barrett's Cleaners
Attn: Eunice Kim
261 Old NC Hwy 42 E
Clayton, NC 27527
Clayton 42 Investments
4004 NC 55 Highway, Suite 100
Cary, NC 27519
Principal: Raj @ 919-926-9790
Barrett's Cleaners
Attn: Eunice Kim
261 Old NC Hwy 42 E, Clayton, NC 27527
919-550-8606
IA-2
Papa John's Pizza
Attn: Anthony Bennett
251 NC-42 Ste. 10, Clayton, NC 27527
919-550-7772
Clayton 42 Investments
4004 NC 55 Highway, Suite 100
Cary, NC 27519
Principal: Raj @ 919-926-9790
Papa John's Pizza
Attn: Anthony Bennett
@ [e-mail]
251 NC-42 Ste. 10, Clayton, NC 27527
ADT 5(3)
Table 6: Monitoring Well Construction Data
DSCA ID No.: DC510004
Well ID Date Installed
(mm/dd/yy)Number of Samples Well Depth
[feet]
Well Diameter
[inch]
Screen Interval
[feet]
Status
(Active/Inactive)
MW-1 10/28/21 5 20 2 10-20 Active
MW-2 10/29/21 5 20 2 10-20 Active
MW-3 10/29/21 5 15 2 5-15 Active
MW-4 7/14/22 4 20 2 10-20 Active
MW-5 7/15/22 4 20 2 10-20 Active
ADT 6
Table 7: Groundwater Elevation Data
DSCA ID No.: DC510004
Groundwater
Sampling Point
Sampling Date
(mm/dd/yy)
TOC Elevation
[feet]
Depth to Water
[feet bgs]
Groundwater
Elevation
[feet]
Depth to NAPL
[feet bgs]
NAPL Thickness
[feet]
Corrected*
Groundwater
Elevation [feet]
MW-1 11/1/2021 327.48 10.22 317.26 NA NA NA
MW-2 11/1/2021 326.84 10.60 316.24 NA NA NA
MW-3 11/1/2021 328.24 11.00 317.24 NA NA NA
MW-1 7/19/2022 327.48 10.42 317.06 NA NA NA
MW-2 7/19/2022 326.84 9.73 317.11 NA NA NA
MW-3 7/19/2022 328.24 10.97 317.27 NA NA NA
MW-4 7/19/2022 324.89 8.30 316.59 NA NA NA
MW-5 7/19/2022 327.02 10.35 316.67 NA NA NA
MW-1 10/19/2023 327.48 11.79 315.69 NA NA NA
MW-2 10/19/2023 326.84 11.13 315.71 NA NA NA
MW-3 10/19/2023 328.24 12.35 315.89 NA NA NA
MW-4 10/19/2023 324.89 NM NM NA NA NA
MW-5 10/19/2023 327.02 11.72 315.30 NA NA NA
MW-1 1/19/2024 327.48 9.37 318.11 NA NA NA
MW-2 1/19/2024 326.84 8.41 318.43 NA NA NA
MW-3 1/19/2024 328.24 9.68 318.56 NA NA NA
MW-4 1/19/2024 324.89 9.17 315.72 NA NA NA
MW-5 1/19/2024 327.02 8.53 318.49 NA NA NA
MW-1 4/24/2024 327.48 9.17 318.31 NA NA NA
MW-2 4/24/2024 326.84 8.46 318.38 NA NA NA
MW-3 4/24/2024 328.24 9.46 318.78 NA NA NA
MW-4 4/24/2024 324.89 7.05 317.84 NA NA NA
MW-5 4/24/2024 327.02 9.07 317.95 NA NA NA
ADT 7
Table 8: Analytical Data for Groundwater
DSCA ID No.: DC510004
Be
n
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e
n
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s
-
1
,
2
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D
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Na
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Ch
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Br
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D
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2
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Ca
r
b
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n

d
i
s
u
l
f
i
d
e
MW-1 11/1/21 <
0.0010
<
0.0010
<
0.0010
<
0.0010
<
0.0010 0.0012 <
0.0010
<
0.0010
<
0.0010
<
0.0010
<
0.0030 0.014 J <
0.0010
<
0.0010
<
0.0010
<
0.0010
<
0.0010
MW-1 7/19/22 <
0.0010
<
0.0010
<
0.0010
<
0.0010
<
0.0010 0.02 <
0.0010
<
0.0010
<
0.0010
<
0.0010
<
0.0030 < 0.020 0.0005
5 J
<
0.0010
<
0.0010
<
0.0010
<
0.0010
MW-1 10/19/23 <
0.0010
<
0.0010
<
0.0010
<
0.0010
<
0.0010 0.0227 <
0.0010
<
0.0010
<
0.0010
<
0.0010
<
0.0030 < 0.020 0.0003
17 J
<
0.0010
<
0.0010
<
0.0010
<
0.0010
MW-1 1/19/24 <
0.0005
<
0.0005
<
0.0005
<
0.0005
<
0.0025
0.0049
6
<
0.0005
<
0.0005
<
0.0005
<
0.0005
<
0.0015 < 0.025 0.0001
84 J
<
0.0005
<
0.0005 < 0.005 <
0.0005
MW-1 4/24/24 <
0.0010
<
0.0010
<
0.0010
<
0.0010
<
0.0010 0.0177 <
0.0010
<
0.0010
<
0.0010
<
0.0010
<
0.0030 < 0.020 <
0.0010
<
0.0010
<
0.0010 NA NA
MW-2 11/1/21 <
0.0010
0.0009
4 J
<
0.0010
<
0.0010
<
0.0010 0.25 <
0.0010
<
0.0010 0.0091 <
0.0010
<
0.0030 < 0.020 0.0006
2 J
<
0.0010
<
0.0010
<
0.0010
<
0.0010
MW-2 7/19/22 <
0.0010 0.0017 <
0.0010
<
0.0010
<
0.0010 0.44 <
0.0010
<
0.0010 0.018 <
0.0010
<
0.0030 < 0.020 0.0011 <
0.0010
<
0.0010
<
0.0010
<
0.0010
MW-2 10/19/23 0.0012
2 J 0.0045 <
0.0010
<
0.0010
<
0.0010 0.606 <
0.0010
<
0.0010 0.0234 <
0.0010
<
0.0030
<
0.0002
<
0.0010
<
0.0010
0.0001
96 J
<
0.0010
<
0.0010
MW-2 1/19/24 <
0.0005 0.0078 <
0.0005
<
0.0005
<
0.0025 0.983 <
0.0005
<
0.0005 0.0322 <
0.0005
<
0.0015 < 0.025 0.0023
1
<
0.0005
0.0002
45 J
0.0019
4 J
<
0.0005
MW-2 4/24/24 <
0.0010 0.008 <
0.0010
<
0.0010
<
0.0010 0.603 <
0.0010
<
0.0010 0.0278 <
0.0010
<
0.0030 < 0.020 <
0.0010
<
0.0010
<
0.0010 NA NA
MW-3 11/1/21 <
0.0010
<
0.0010
<
0.0010
<
0.0010
<
0.0010
<
0.0010
<
0.0010
<
0.0010
<
0.0010
<
0.0010
<
0.0030 < 0.020 <
0.0010
<
0.0010
<
0.0010
<
0.0010
<
0.0010
MW-3 7/19/22 <
0.0010
<
0.0010
<
0.0010
<
0.0010
<
0.0010
0.0004
8 J
<
0.0010
<
0.0010
<
0.0010
<
0.0010
<
0.0030 < 0.020 <
0.0010
<
0.0010
<
0.0010
<
0.0010
<
0.0010
MW-3 10/19/23 <
0.0010
<
0.0010
<
0.0010
<
0.0010
<
0.0010
<
0.0010
<
0.0010
<
0.0010
<
0.0010
<
0.0010
<
0.0030 < 0.020 0.0001
28 J
<
0.0010
<
0.0010
<
0.0010
<
0.0010
MW-3 1/19/24 <
0.0005
<
0.0005
<
0.0005
<
0.0005
<
0.0025 0.0023 <
0.0005
<
0.0005
<
0.0005
<
0.0005
<
0.0015 < 0.025 0.0001
8 J
<
0.0005
<
0.0005
<
0.0005
<
0.0005
MW-3 4/24/24 <
0.0010
<
0.0010
<
0.0010
<
0.0010
<
0.0010
<
0.0010
<
0.0010
<
0.0010
<
0.0010
<
0.0010
<
0.0030 < 0.020 <
0.0010
<
0.0010
<
0.0010 NA NA
MW-4 7/19/22 0.06 <
0.0010
<
0.0010 0.0014 0.0014 0.0004
9 J
<
0.0010
<
0.0010
<
0.0010
<
0.0010 0.0044 < 0.020 <
0.0010 0.0016 <
0.0010
<
0.0010
<
0.0010
MW-4 10/19/23 0.0002
02 J
<
0.0010
<
0.0010
<
0.0010
<
0.0010
0.0001
13
<
0.0010
<
0.0010
<
0.0010
<
0.0010
<
0.0030 < 0.020 <
0.0010
<
0.0010
<
0.0010
<
0.0010
<
0.0010
Gr
o
u
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d
w
a
t
e
r

S
a
m
p
l
i
n
g

P
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i
n
t
Sa
m
p
l
i
n
g

D
a
t
e

(
m
m
/
d
d
/
y
y
)
[mg/L]
ADT 8
Table 8: Analytical Data for Groundwater
DSCA ID No.: DC510004
Be
n
z
e
n
e
ci
s
-
1
,
2
-
D
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(M
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B
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Na
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Ac
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1,
2
,
4
-
T
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Br
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a
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tr
a
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s
-
1
,
4
-
D
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c
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o
-
2
-
bu
t
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Ca
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b
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d
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f
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Gr
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d
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S
a
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P
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Sa
m
p
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i
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g

D
a
t
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(
m
m
/
d
d
/
y
y
)
[mg/L]
ADT 8
MW-4 1/19/24 <
0.0005
<
0.0005
<
0.0005
<
0.0005
<
0.0025
<
0.0005
<
0.0005
<
0.0005
<
0.0005
<
0.0005
<
0.0015 < 0.025 <
0.0005
<
0.0005
<
0.0005
0.0019
2 J
0.0001
71 J
MW-4 4/24/24 <
0.0010
<
0.0010
<
0.0010
<
0.0010
<
0.0010
<
0.0010
<
0.0010
<
0.0010
<
0.0010
<
0.0010
<
0.0030 < 0.020 <
0.0010
<
0.0010
<
0.0010 NA NA
MW-5 7/19/22 0.0009
3 J
<
0.0010
<
0.0010
<
0.0010
<
0.0010
0.0005
0 J
<
0.0010
<
0.0010
<
0.0010
<
0.0010
<
0.0030 < 0.020 <
0.0010
<
0.0010
<
0.0010
<
0.0010
<
0.0010
MW-5 10/19/23 <
0.0010
<
0.0010
<
0.0010
<
0.0010
<
0.0010
<
0.0010
<
0.0010
<
0.0010
<
0.0010
<
0.0010
<
0.0030 < 0.020 <
0.0010
<
0.0010
<
0.0010
<
0.0010
<
0.0010
MW-5 1/19/24 <
0.0005
<
0.0005
<
0.0005
<
0.0005
<
0.0025
<
0.0005
<
0.0005
<
0.0005
<
0.0005
<
0.0005
<
0.0015 < 0.025 <
0.0005
<
0.0005
<
0.0005
0.0019
8 J
<
0.0005
MW-5 4/24/24 <
0.0010
<
0.0010
<
0.0010
<
0.0010
<
0.0010
<
0.0010
<
0.0010
<
0.0010
<
0.0010
<
0.0010
<
0.0030 < 0.020 <
0.0010
<
0.0010
<
0.0010 NA NA
PW-1 7/15/22 <
0.0010
<
0.0010
<
0.0010
<
0.0010
<
0.0010
<
0.0010
<
0.0010
<
0.0010
<
0.0010
<
0.0010
<
0.0030 < 0.020 <
0.0010
<
0.0010
<
0.0010
<
0.0010
<
0.0010
Table 9: Analytical Data for Surface Water
DSCA ID No.: DC510004
Be
n
z
e
n
e
ci
s
-
1
,
2
-
D
i
c
h
l
o
r
o
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t
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Et
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b
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Me
t
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t
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t
-
b
u
t
y
l

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t
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(M
T
B
E
)
Na
p
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t
h
a
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e
n
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Te
t
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a
c
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l
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t
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n
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To
l
u
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n
e
tr
a
n
s
-
1
,
2
-
D
i
c
h
l
o
r
o
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t
h
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l
e
n
e
Tr
i
c
h
l
o
r
o
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t
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l
e
n
e
Vi
n
y
l

c
h
l
o
r
i
d
e
Xy
l
e
n
e
s

(
t
o
t
a
l
)
SW-1 7/15/22 <
0.0010
<
0.0010
<
0.0010
<
0.0010
<
0.0010
<
0.0010
<
0.0010
<
0.0010
<
0.0010
<
0.0010
<
0.0030
Sa
m
p
l
e

I
D
Sa
m
p
l
i
n
g

D
a
t
e

(
m
m
/
d
d
/
y
y
)
[mg/L]
ADT 9
Table 10: Water Well(s) Survey Data
DSCA ID No.: DC510004
Ref. No./
Well ID
Sampling Location
Name and Address
Property Owner
Name, Address, and
Phone Number
Tenant Name, Address,
and Phone Number
Distance
from
Source
[feet]
Well
Depth
[feet]
Screen
Interval
[feet]
Use of Well Source of Well
Identification
Direction
(downgradient,
upgradient, etc.,
to source area)
Status
(Active/
Inactive)
WSW-1 Not sampled
Chedi Corp, LLC
430 Roslyn Rd
Winston Salem, NC 27104
287 Old State Hwy 42 E
Clayton, NC 27527 385 Unknown Unknown Drinking Water 2016 Ph I LSA
Receptor Survey Updradient Unknown
WSW-2 Not sampled
Barry & Laurie Partlo
435 NC 42 East
Clayton, NC 27527
391 NC Hwy 42
Clayton, NC 27527 875 Unknown Unknown Drinking Water 2016 Ph I LSA
Receptor Survey Updradient Unknown
WSW-3 Not sampled
Greg & Angela Jones
118 Pecan Ln
Clayton, NC 27527
110 Pecan Ln
Clayton, NC 27527 1,075 Unknown Unknown Drinking Water 2016 Ph I LSA
Receptor Survey Updradient Unknown
WSW-4 Not sampled
East Village Investments
LLC
227 E Front St
New Bern, NC 28560
NA 950 110 Unknown Drinking Water
October 2021
Public Notification
Mailing
Updradient Active
WSW-5 Not sampled
Gary L & Janet D Rush
2072 Dove Ln
Clayton, NC 27527
Gary L & Janet D Rush
2072 Dove Ln
Clayton, NC 27527
5,280 60 Unknown Drinking Water
October 2021
Public Notification
Mailing
Updradient Active
ADT 10

FIGURES

Figure 1
APPROX. SCALE, ft.
0 100
SHEET:
DR
A
W
N

B
Y
:
CH
E
C
K
E
D

B
Y
:
PR
O
J
E
C
T

N
O
.
:
AE
C
O
M

T
E
C
H
N
I
C
A
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Barrett’s Cleaners
(261 NC Hwy 42 E)
Speedway #8299
(Incident #42007 -
291 NC Hwy 42 E)
LEGEND
Property Line
Approximate Location of Dry-Cleaning Machine
Barrett’s Cleaners Tenant Space
Unnamed Drainage Feature
Si
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
APPROX. SCALE, ft.
0 25
SHEET:
Barrett’s Cleaners
Papa John’s Pizza

SSV-1 (2021-11-08)
PCE - 2,600 µg/mk
TCE - 1,000 µg/mk
cis-1,2-DCE - 940 µg/mk
trans-1,2-DCE - 85 µg/mk
VC - 0.39 µg/mk
IA-2 (2022-05-24)
PCE - 0.36 µg/mk
IA-1 (2022-05-24)
PCE - 0.63 µg/mk
SSV-2 (2022-07-14)
PCE - 650 µg/mk
TCE - 2.3 µg/mk
SG-1 (2022-07-14)
PCE - 6,700 µg/mk
SG-2 (2022-07-14)
PCE - 930 µg/mk
SG-3 (2022-07-14)
PCE - 3.0 µg/mk
SG-4 (2022-07-14)
PCE - 4.0 µg/mk
LEGEND
PCE - Tetrachloroethene
TCE - Trichloroethene
DCE - Dichloroethene
Property Line
micrograms per cubic meterµg/mk
Approximate Location of Dry-Cleaning Machine
Subslab Vapor Sample Location
Indoor Air Sample Location
Analytical results do not exceed calculated vapor intrusion
risk for residential or non-residential exposure – DSCA
Soil Gas to Indoor Air/Indoor Air Risk Calculator.
Analytical results do not exceed calculated vapor intrusion
risk for non-residential exposure but do exceed for
residential exposure – DSCA Soil Gas to Indoor Air Risk
Calculator.
Analytical results exceed calculated vapor intrusion risk for
residential and non-residential exposure – DSCA Soil Gas
to Indoor Air Risk Calculator.
SG-5 (2023-10-20)
PCE - 414 µg/mk
TCE - 1.28 µg/mk
APPROX. SCALE, ft.
0 100
SHEET:
LEGEND
PCE - Tetrachloroethene
TCE - Trichloroethene
DCE - Dichloroethene
Property Line
Groundwater Sample Location (Terraquest,
February 21, 2019)
micrograms per literµg/L
Approximate Location of Dry-Cleaning Machine
Monitoring Well Location (AECOM)
Speedway (Incident No. 42007) Monitoring Well
Location (CSA Report prepared by Mid-Atlantic
Associates, Inc., dated February 22, 2019)
Red highlighted text indicates concentrations above 2L
Standards.
Barrett’s Cleaners Tenant Space
Sample analytical results do not exceed calculated
vapor intrusion risk for residential or non-residential
exposure – DSCA Groundwater to Indoor Air Risk
Calculator.
Sample analytical results do not exceed calculated
vapor intrusion risk for non-residential exposure but
do exceed for residential exposure – DSCA Ground-
water to Indoor Air Risk Calculator.
Sample analytical results exceed calculated vapor
intrusion risk for residential and non-residential
exposure – DSCA Groundwater toIndoor Air Risk
Calculator.
Inferred Groundwater Flow Direction
Potentiometric Surface Contour (ft/msl) -
October 19, 2023
Unnamed Drainage Feature
Area of PCE 2L Standard Exceedance
Below Laboratory Detection LimitsBDL
Pore Water / Surface Water Sample Location
(AECOM)
Estimated ValueJ
Figure 4
315.5
315.0
GW-1 (15-19’) (2/21/2019)GW-1 (15-19’) (2/21/2019)
PCE - 21 µg/L
MW-02 (8-23) (8/17/2023)
1,2,4-Trimethylbenzene - 813 µg/L
1,3,5-Trimethylbenzene - 215 µg/L
Benzene - 3,560 µg/L
Ethylbenzene - 1,370 µg/L
Isopropylbenzene - 54.2 µg/L
Naphthalene - 249 µg/L
n-Propylbenzene - 148 µg/L
Toluene - 5,250 µg/L
m&p-Xylenes - 2,930 µg/L
o-Xylene - 1,450 µg/L
MW-08 (8-18) (8/17/2023)
Benzene - 17.3 µg/L
n-Butylbenzene - 1.1 µg/L
sec-Butylbenzene - 0.69 µg/L
Chloroform - 0.83 µg/L
Isopropylbenzene - 2.7 µg/L
Naphthalene - 2.8 µg/L
1,2,4-Trimethylbenzene - 1.3 µg/L
o-Xylene - 3.0 µg/L
MW-3 (5-15) (10/19/2023)
Chloroform - 0.128 J µg/L
MW-2 (10-20) (10/19/2023)
PCE - 606 µg/L
TCE - 23.4 µg/L
cis-1,2-DCE - 4.45 µg/L
Chloroform - 1.22 J µg/L
Bromodichloromethane - 0.196 J µg/L
MW-1 (10-20) (10/19/2023)
PCE - 22.7 µg/L
Chloroform - 0.317 J µg/L
MW-5 (10-20) (10/19/2023)
BDL
MW-4 (10-20) (10/19/2023)
PCE - 1.13 µg/L
Benzene - 0.202 J µg/L
SW-1 (07/15/2022)
APPROX. SCALE, ft.
0 140
SHEET:
LEGEND
PCE - Tetrachloroethene
TCE - Trichloroethene
DCE - Dichloroethene
Property Line
Groundwater Sample Location (Terraquest,
February 21, 2019)
micrograms per literµg/L
Approximate Location of Dry-Cleaning Machine
Monitoring Well Location (AECOM)
Speedway (Incident No. 42007) Monitoring Well
Location (CSA Report prepared by Mid-Atlantic
Associates, Inc., dated February 22, 2019)
Red highlighted text indicates concentrations above 2L
Standards.
Barrett’s Cleaners Tenant Space
Sample analytical results do not exceed calculated
vapor intrusion risk for residential or non-residential
exposure – DSCA Groundwater to Indoor Air Risk
Calculator.
Sample analytical results do not exceed calculated
vapor intrusion risk for non-residential exposure but
do exceed for residential exposure – DSCA Ground-
water to Indoor Air Risk Calculator.
Sample analytical results exceed calculated vapor
intrusion risk for residential and non-residential
exposure – DSCA Groundwater toIndoor Air Risk
Calculator.
Inferred Groundwater Flow Direction
Potentiometric Surface Contour (ft/msl) -
January 19, 2024
Unnamed Drainage Feature
Area of PCE 2L Standard Exceedance
Below Laboratory Detection LimitsBDL
Pore Water / Surface Water Sample Location
(AECOM)
Estimated ValueJ
Private Water Supply Well (WSW)
Figure 5
MW-3 (5-15) (1/19/2024)
PCE - 2.32 µg/L
Chloroform - 0.180 J µg/L
MW-2 (10-20) (1/19/2024)
PCE - 983 µg/L
TCE - 32.2 µg/L
cis-1,2-DCE - 7.80 µg/L
Chloroform - 2.31 µg/L
Bromodichloromethane - 0.245 J µg/L
trans-1,4-Dichloro-2-butene - 1.94 J µg/L
MW-1 (10-20) (1/19/2024)
PCE - 4.96 µg/L
Chloroform - 0.184 J µg/L
MW-5 (10-20) (1/19/2024)
trans-1,4-Dichloro-2-butene - 1.98 J µg/L
MW-4 (10-20) (1/19/2024)
Carbon disulfide - 0.171 J µg/L
trans-1,4-Dichloro-2-butene - 1.92 J µg/L
APPROX. SCALE, ft.
0 140
SHEET:
LEGEND
PCE - Tetrachloroethene
TCE - Trichloroethene
DCE - Dichloroethene
Property Line
Groundwater Sample Location (Terraquest,
February 21, 2019)
micrograms per literµg/L
Approximate Location of Dry-Cleaning Machine
Monitoring Well Location (AECOM)
Speedway (Incident No. 42007) Monitoring Well
Location (CSA Report prepared by Mid-Atlantic
Associates, Inc., dated February 22, 2019)
Red highlighted text indicates concentrations above 2L
Standards.
Barrett’s Cleaners Tenant Space
Sample analytical results do not exceed calculated
vapor intrusion risk for residential or non-residential
exposure – DSCA Groundwater to Indoor Air Risk
Calculator.
Sample analytical results do not exceed calculated
vapor intrusion risk for non-residential exposure but
do exceed for residential exposure – DSCA Ground-
water to Indoor Air Risk Calculator.
Sample analytical results exceed calculated vapor
intrusion risk for residential and non-residential
exposure – DSCA Groundwater toIndoor Air Risk
Calculator.
Inferred Groundwater Flow Direction
Potentiometric Surface Contour (ft/msl) - April
24, 2024
Unnamed Drainage Feature
Area of PCE 2L Standard Exceedance
Below Laboratory Detection LimitsBDL
Pore Water / Surface Water Sample Location
(AECOM)
Estimated ValueJ
Private Water Supply Well (WSW)
Figure 6
318.0
317.5
318.5
MW-3 (5-15) (4/24/2024)
BDL
MW-2 (10-20) (4/24/2024)
PCE - 603 µg/L
TCE - 27.8 µg/L
cis-1,2-DCE - 8.0 µg/L
MW-1 (10-20) (4/24/2024)
PCE - 17.7 µg/L
MW-5 (10-20) (4/24/2024)
BDL
MW-4 (10-20) (4/24/2024)
BDL
APPROX. SCALE, ft.
0 100
SHEET:
MW-1
MW-2
MW-3
LEGEND
Property Line
Inferred Groundwater Flow Direction
Potentiometric Surface Contour (ft/msl)
Monitoring Well Location, Identification and
Relative Groundwater Elevation (feet above mean
sea level [ft/msl])
MW-1315.69
Unnamed Drainage Feature
Not Measured (Equipment Malfunction)NM
315.89
315.71
315.69
315.5
315.0
MW-1
MW-2
MW-3
Barrett’s Cleaners
Figure 7
NMMW-4
315.30MW-5
APPROX. SCALE, ft.
0 140
SHEET:
LEGEND
Property Line
Inferred Groundwater Flow Direction
Potentiometric Surface Contour (ft/msl)
Monitoring Well Location, Identification and
Relative Groundwater Elevation (feet above mean
seal level [ft/msl])
MW-1318.11
Unnamed Drainage Feature
318.56
318.43
318.11MW-1
MW-2
MW-3
Barrett’s Cleaners
Figure 8
315.72MW-4
318.49MW-5
APPROX. SCALE, ft.
0 140
SHEET:
LEGEND
Property Line
Inferred Groundwater Flow Direction
Potentiometric Surface Contour (ft/msl)
Monitoring Well Location, Identification and
Relative Groundwater Elevation (feet above mean
sea level [ft/msl])
MW-1318.31
Unnamed Drainage Feature
318.78
318.38
318.31
318.0
317.5
318.5
MW-1
MW-2
MW-3
Barrett’s Cleaners
Figure 9
317.84MW-4
317.95MW-5

APPENDIX A
AECOM STANDARD OPERATING PROCEDURES

Soil Gas Sampling (Rev2)Revision November 2023
PRINTED COPIES ARE UNCONTROLLED. CONTROLLED COPY IS AVAILABLE ON COMPANY INTRANET.1/4
AECOM – North Carolina Standard Operating Procedures
Soil Gas Sampling
1.Purpose and Scope
Standard operating procedure for the collection of soil gas samples using laboratory provided Summa canisters.
2.Procedure
2.1 Required Equipment:
Project Health and Safety Plan (HASP)
Work Plan
Summa Canister with a Flow Regulator from a certified laboratory (pre-calibrated for a 200 ml/min flow rate,
Image-2, A1)
Field forms – Summa Canister Field Sampling Data Sheet
¼” Stainless steel nuts and ferrules
Stainless-steel hand auger
Stainless-steel SGV 6 IN. Screened Implant with Stepped Fitting (AMS Vapor Implants Sampling Method,
Image-1 and Image-2, B1)1/4" OD x 1/8" ID Teflon tubingHammer drill (If soil gas installation is being conducted in a location were concrete/asphalt is present)
Hammer drill bit, diameter size based on size of stainless-steel hand auger
Extension cord
Portable generator (If power is not available and hammer drill is required for installation)
#2 driller sand
Hydraulic cement and/or bentonite
Water
Decontamination equipment
Ziplock bags
Helium detector
Helium
Helium chamber
50mL Syringe with Luer-Lock tip Tedlar bags (Image-2, C1)
Safety Cones
Laminated Sign to notify Air Sampling in progress
Chain of Custody (COC)
FedEx forms Standard wrench setDigital camera3-Way Stopcock Valve (Image-2, D1)Two 1/4 in. O.D. Polypropylene Push-to-Connect Valve (Image-2, E1 & E2)
1/4 in. Push-To-Connect Polypropylene Tee Fitting (Image-2, F1)Shut-in Leak Check Assembly: Image-2, In-line vacuum pressure gauge (G1) and Brass two-way valve (G2).
2.2 Vapor Implant Sampling Method
1.Prior to mobilizing to the field, ensure summa canisters had adequate vacuum for sampling. Additionally, ensure
all summa canister components have been provided by the lab that are necessary to complete the sampling. If
there is any issues with a summa canister, contact the lab immediately for replacement.
2.Prior to intrusive activities, locate any underground utilities to ensure the safety of subsurface work conditions.

AECOM
Soil Gas Sampling (Rev2)Revision November 2023
PRINTED COPIES ARE UNCONTROLLED. CONTROLLED COPY IS AVAILABLE ON COMPANY INTRANET.2/4
3.Use a clean, stainless steel hand auger to auger down to a minimum of 6 feet beneath the ground surface (ft
Bgs). If a minimum depth of 6 ft Bgs cannot be reached, notify the AECOM project manager for the site before
collecting a sample.
Note: Vapor implant should not be placed in saturated soils. Additionally, Soil gas sampling should not occur
during a significant rain event (e.g., 1/2 inch or greater of rainfall during a 24-hour period). A minimum of 5 days
after a significant rain event or 5 days after watering has stopped in areas that are irrigated to complete soil gas
sampling. This does not apply to areas where infiltration has not occurred, such as under buildings or high-
integrity pavement.
4.Attach Teflon tubing to the barbed tang of a 6” AMS Vapor Implant (AMS Item #21010). Make sure that the
connection between the barbed end of the implant and the Teflon tubing is secure.
*Stainless Steel SGV 6 IN. Screened Implant with Stepped Fitting (Image-1)
5.Lower the AMS Vapor Implant and attached tubing into the borehole until the Implant reaches the desired depth.
The top of the vapor implant should be a minimum of five feet below ground surface.
6.Cut the tubing to the desired length so that you have approximately 2’ of extra tubing to attach to the summa
canister.
7.Using #2A filter sand, add enough sand to cover the 6” Implant and 2-3” above the Implant. Check the depth of
sand using a measuring tape. The top of the sand should be a minimum of five feet below ground surface.
8.Add hydraulic cement or bentonite above the top of the sand to the surface to create a seal. If using cement,
place a thin layer of 1-2 inches of dry bentonite above the sand pack to prevent the cement from intruding into
the sand pack before it hardens. If using bentonite, hydrate the bentonite to ensure a proper seal. Wait 2 hours
or until the hydraulic cement has fully hardened, whichever is longer.
9.Use a syringe to purge the subsurface air through the Teflon tubing. Purge a maximum of three pore volume of
the borehole. The pore volume should be a minimum of the volume of the tubing and sand filter pack.
Calculate pore volume using formula: v = π ra2La + π rt2Lt where:
v =Volume
La =Length of sand-filled annular space, and
ra =Radius of annular space
Lt =Length of tubing, and
rt =Radius of tubing
10.Thread the tubing through the helium leak test device (helium chamber).
11.Connect the Teflon tubing from the soil gas point to a 2-way valve (Image-2, E1) and use Teflon tubing to
connect the 2-way valve (Image-2, E1) to the tee fitting (Image-2, F1).
12.Connect Teflon tubing to the stainless-steel summa canister (Image-2, A1) using air-tight stainless-steel fittings
and then connect the Teflon tubing to tee fitting (Image-2, F1).

AECOM
Soil Gas Sampling (Rev2)Revision November 2023
PRINTED COPIES ARE UNCONTROLLED. CONTROLLED COPY IS AVAILABLE ON COMPANY INTRANET.3/4
13.Connect Teflon tubing to the last open connection on the tee fitting (Image-2, F1) then connect the Teflon tubing
to a 2-way valve (Image-2, E2).
14.Connect the 2-way valve (Image-2, E2) to the in line Shut-in Leak Check Assembly (Image-2: G1 and G2).
15.Connect the in line Shut-in Leak Check Assembly (Image-2: G1 and G2) to the 3-way stopcock valve (Image-2,
D1). One connection will be used to apply a vacuum using a syringe (Image-2, C1) and one connection will be
connected to a Tedlar bag.
16.Conduct the leak test and shut-in test as outlined in Section 3.
17.After the completion of the leak test and shut-in test, utilize the laboratory supplied flow controller to pull the
sample over the desired time interval. The extraction rate of the summa canister should not exceed 200 ml/min.
18.To remove the stainless-steel Implant, break up the hydraulic seal. Tug gently on the Teflon tubing until the
Implant is freed.
19.Remove the Teflon tubing from the barb and dispose of the tubing and the disposable stainless-steel Implant.
20.Backfill borehole with hydraulic cement.
3.Leak Test and Shut-In Test Procedure
1.Close the 2-way valve closest to the soil gas point (Image-2, E1).
2.Use a syringe (Image-2, C1) to extract a negative pressure of approximately 10-inches of mercury (inHg) to the
sample train.
* Shut-In Test Procedure (Image-2)

AECOM
Soil Gas Sampling (Rev2)Revision November 2023
PRINTED COPIES ARE UNCONTROLLED. CONTROLLED COPY IS AVAILABLE ON COMPANY INTRANET.4/4
3.Close the 2-way brass valve (Image-2, G2) between the vacuum pressure gauge (Image-2, G1) and the vacuum
pump or syringe (Image-2, C1).
4.Record the initial negative pressure displayed on the vacuum pressure gauge (Image-2, G1).
5.Monitor the vacuum pressure gauge (Image-2, G1) for 5 minutes. Ensure that the negative pressure does not
decrease by more than 1-inHg.
6.Record the negative pressure reading on the summa cannister field data sheet. If the reading has dropped less
than 1-inHg, proceed to the next step. If the negative pressure reading has dropped more than 1-inHg,
reconstruct the sample train as necessary and repeat the test.
7.Close the 2-way valve (Image-2, E2) between the vacuum pressure gauge (Image-2, G1) and the tee fitting
(Image-2, F1).
8.Open the 2-way valve (Image-2, E1) between the tee fitting (Image-2, F1) and the soil gas point.
9.Monitor the vacuum presusure gauge for 5 minutes. Ensure that the negative pressure does not decrease by
more than 1-inHg.
10.Record the negative pressure reading. If the reading has dropped by less than 1-inHg, proceed to the next step.
If the negative pressure reading has dropped by more than 1-inHg, reconstruct the sample train as necessary
and repeat the test.
11.Open all 2-way valves (Image-2, E2 and G2) between the syringe (Image-2, C1) and the tee fitting (Image-2,
G1).
12.Attach the helium detector to the helium chamber. Attach the helium container to the helium chamber using
teflon tubing and fill the helium chamber with helium until the helium detector reads >50%.
13.Use the syringe to fill a 1 Liter Tedlar bag with air from the sample port. This can be done by filling the syringe
with the 3-way stopcock valve (Image-2, D1) to the Tedlar bag closed and the connection to the soil gas point
open and emptying the syringe with the 3-way stopcock valve (Image-2, D1) to the Tedlar bag open and the
connection to the soil gas point closed.
14.Close the Tedlar bag and detach it from the pump.
15.Turn off the flow of helium into the helium leak test device.
16.Remove the helium detector from the leak test device and allow the helium detector reading to reach 0 ppm.
17.Insert the helium detector into the silicon tubing attached to the Tedlar bag and open valve on the bag.
18.Record the reading. If the reading is below 10% of the value measured within the test device, proceed to the
next step. If the reading is above 10%, repeat the leak test and reconstruct the sample point as necessary.
19.Be sure that the valve to the Tedlar bag is open and that nothing is blocking the flow to the helium detector. The
detector may produce false readings if the detector pump is strained or if methane is present in the soil gas.
4.Records
a.Summa Canister Field Data Sheet
b.Equipment Calibration Sheets
5.Attachments
a.Summa Canister Field Data Sheet
Site:
Samplers:
Date:
Sample#
Location
Summa Canister ID
Flow Controller ID
NO/NO/NO/NO/NO/
Additional Tubing Added YES - How much YES - How much YES - How much YES - How much YES - How much

Purge Time (Start)
Purge Time (Stop)
Total Purge Time (min)
Purge Volume
PID Test of Purge Air
Initial Tracer Gas Results
Pressure Gauge - before
sampling
Sample Time (Start)
Sample Time (Stop)
Total Sample Time (min)
Pressure Gauge - after
sampling
Sample Volume
Canister Pressure Went to
Ambient Pressure?YES / NO YES / NO YES / NO YES / NO YES / NO
Final Tracer Gas Results
Associate Ambient Air
Sample Number
Summa Canister Sampling Field Data Sheet
General Comments:

Barrett's cleaners Clayton NCJaidenarGrantP102023
SG 5
DC510004
42302494
E 040
0907
0909
2min
1 00
NIA
51 He
28.0its
0911
0918
7 min
5 0 Hg
1.4L
48 Heinsured
to in ng monitoringstinessiresingeforsuntintestappx sminsstep6onsom
o in Hgpressureneedstepios
Heleaktest sos o.oppmitein tedlarbag pointpasses shutintheleaktests

Groundwater Sampling Using Disposable Bailers ()
Revision June 7, 2017
PRINTED COPIES ARE UNCONTROLLED. CONTROLLED COPY IS AVAILABLE ON COMPANY INTRANET. 1 2

AECOM – North Carolina Standard Operating Procedures
Groundwater Sampling Using Disposable Bailers

1. Purpose and Scope
Standard operating procedures to collect groundwater samples using disposable bailers.
2. Procedure
2.1 Required Equipment
 HASP
 Field Note Book and sampling logs.
 Polypropylene rope, scissors (instrument to cut rope)
 Bailer
 Electronic water level indicator or oil-water interface probe
 Collection container (5-gallon buck or similar container)
 PPE
 Sample bottles
 Calculator
 Water Quality Meter
2.2 Procedure
1. Review HASP. The field technician will don nitrile (or other HASP-approved gloves based on
contaminants) gloves for all associated field work and sampling.

2. Open all wells to be sampled and allow equilibration time. Well caps should be placed
adjacent to the monitoring wells on a clean area such as a small piece of plastic or towel.

3. Measure static water levels and total depth of well using the electronic water level
indicator, or other similar device, and utilizing decontamination procedures to
decontaminate the water level indicator before measuring water levels in the first well,
between each well, and after completion of all water level measurements.
4. Calculate and record in the field book the volume of water in each well casing to be
sampled. Sometimes this may be performed prior to field activity.

Calculate borehole volume using formula: v =
πr2 L Where:
v = Volume
L = Length of well, and
r = Radius of well

ECOM
Groundwater Sampling Using Disposable Bailers ()
Revision June 7, 2017 PRINTED COPIES ARE UNCONTROLLED. CONTROLLED COPY IS AVAILABLE ON COMPANY INTRANET. 2 2

or use Cheat Sheet:

Well Diameter
(Inches)

Gallons/Foot
2 0.16
3 0.37
4 0.65
5 1.02
6 1.47
7 2.00
8 2.61
9 3.30
10 4.08
12 5.87
14 8.00
16 10.50
18 13.20
20 16.30
24 23.50
36 52.90

5. Record the required purge volume in the field book (this should be three times the calculated
volume of water in the well casing) and sample log. Purge at least the required volume of
water from the monitoring well using a new or dedicated bailer and a new length of
polypropylene rope secured tightly to the top of the bailer.

6. Place purge water in collection container for measurement purposes. Record in the field
book the total amount of water purged from the well. Place purge water on ground, in 55-
gallon drum or in other storage container as specified in work plan. If the well bails dry prior
to the removal of three well volumes, record the amount of water purged, allow the well to
recharge. It is not necessary to remove three well volumes from wells that bail dry.

7. Water level and water quality parameters (pH, specific conductance, dissolved oxygen and
turbidity) need to be measured following purging.

8. Lower the bailer back into the well to collect sample. Place groundwater directly into
laboratory supplied sample containers with appropriate preservatives (if required). If filtering
is required for analysis, place water in unpreserved bottle, and request that laboratory filter
sample. If additional groundwater is required to fill all necessary sample bottles, lower bailer
back into well and collect additional groundwater. Seal container.

9. Label sample bottles – date, time, project identifier, sample location, depth (if required),
required analysis, preservative (if used), and sampler’s initials. Place samples in cooler with
ice. Complete chain-of-custody form (supplied by the laboratory) and record site activities
in field log book. Pack cooler for shipping or deliver samples to laboratory. Retain a copy of
chain-of-custody and submit other copies with samples. Close and secure all wells.
3. Records
List of the official records that are generated and support this procedure
a. Field Notes
b. Equipment Calibration Sheets

APPENDIX B
LABORATORY ANALYTICAL REPORTS

AECOM - Morrisville
5438 Wade Park Blvd, Unit 200
Raleigh, NC 27607

Barrett’s Cleaners – Clayton, NC
Client Project# DC510004

Analytical Report
(1023-118)

EPA Method TO-15 Analysis
Tetrachloroethylene (PCE), Trichloroethylene (TCE),
Cis-1,2-Dichloroethylene, Trans-1,2-Dichloroethyelene,
Vinyl chloride

Enthalpy Analytical, LLC
Phone: (919) 850 - 4392 / Fax: (919) 850 - 9012 / www.enthalpy.com
800-1 Capitola Drive Durham, NC 27713-4385

I certify that to the best of my knowledge all analytical data presented in this report:
 Have been checked for completeness
 Are accurate, error-free, and legible
 Have been conducted in accordance with approved protocol, and that all deviations and
analytical problems are summarized in the appropriate narrative(s)
This analytical report was prepared in Portable Document Format (.PDF). This report shall not be
reproduced except in full without approval of the laboratory. This will provide assurance that parts of a
report are not taken out of context.

EA Job# 1023-118 Page 2 of 17
Report Issued: 11/6/23

Results
EA Job# 1023-118 Page 3 of 17
Sample Name
Sample Info.
Sampling Date
Received Date
Sample Type
Batch
Data File
Dilution
Pressurization Factor
Acquisition Date
Instrument Method
Matrix
Analyst
Instrument
Enthalpy ID
Target Compound Concentration
(ppbv)
RL
(ppbv)
MDL
(ppbv)
Concentration
(ug/m³)
RL
(ug/m³)
MDL
(ug/m³)
Flags
Chloroethene (Vinyl chloride)ND 0.0960 0.0841 ND 0.245 0.215
trans-1,2-Dichloroethene ND 0.0980 0.0841 ND 0.389 0.333
cis-1,2-Dichloroethene ND 0.0971 0.0841 ND 0.385 0.333
Trichloroethene 0.238 0.0972 0.0841 1.28 0.522 0.452
Tetrachloroethene 61.0 0.0983 0.0841 414 0.667 0.570
Compound Response Retention
Time (min)
Concentration
(ppbv)
Flag
Bromochloromethane (IS)667,325 11.02 5.21 pass
1,4-Difluorobenzene (IS)2,531,232 12.45 5.16 pass
Chlorobenzene-d5 (IS)2,061,636 16.58 4.92 pass
(ND) = Not Detected
(J) = Below Calibration Range, (E) = Above Calibration Range, (m) = Manual Integration
IS Acceptance Criteria: RT +/- 20 sec, Response +/- 40%
Air
TDD
Xavier
1023-118.SG-5.Can
X2304566.D
1.000
2.403
2023-10-24 10:07
TO15_SCNV6.M
1023-118; 500mL load; Can #942
2023-10-20 09:11
2023-10-23 00:00
Sample
Xavier_X102323D.v1
Enthalpy Analytical
Job No.: 1023-118-1 EPA Method TO-15 Analysis -- Run
AECOM - Morrisville 60699512 Barrett’s Cleaners (DC510004)- Clayton, NC
SG-5
EA Job# 1023-118 Page 4 of 17
Job No.
Company
Site
Can Number 942
Job 1023-118
Sample ID SG-5
CleanDate 09/24/2023
LeakCheckDate 10/04/2023
LeakCheckAnalyst erwright
BlankCheckRef Y2302494
Weather Station ID 88
Weather Station Exp. 02/02/2024
Transducer ID 18
Transducer Exp. 11/04/2023
Can Size (L) 6
Evac Temp (F) 66.4
Evac Pbar (mmHg) 765.8
Evac Gauge (mmHg) -765.8
Evac Analyst erwright
Evac Time 10/23/23 16:59
Evac Vol (L) 0.000
Recd. Temp (F) 67.1
Recd. Pbar (mmHg) 769.4
Recd. Gauge (mmHg) -108.0
Recd Vol (L) 5.230
P1 Temp (F) 67.1
P1 Pbar (mmHg) 769.4
P1 Gauge (mmHg) 820.0
P1 Analyst erwright
P1 Time 10/23/23 17:03
P1 Fill Gas Nitrogen
P1 Vol (L) 12.569
P1 DF Override false
P1 Dilution Factor 2.403
Enthalpy Analytical -- Canister Pressurization
1023-118
AECOM - Morrisville
Barrett’s Cleaners (DC510004)- Clayton, NC
Canister Pressurization Report 20230531 Report Printed 10/26/2023 12:44:20 PM
EA Job# 1023-118 Page 5 of 17

Lab QC
EA Job# 1023-118 Page 6 of 17
Sample Name
Sample Info.
Sample Type
Batch
Data File
Dilution
Pressurization Factor
Acquisition Date
Instrument Method
Matrix
Analyst
Instrument
Enthalpy ID
Target Compound Concentration
(ppbv)
RL
(ppbv)
MDL
(ppbv)
Concentration
(ug/m³)
RL
(ug/m³)
MDL
(ug/m³)
Flags
Chloroethene (Vinyl chloride)ND 0.0400 0.0350 ND 0.102 0.0894 pass
trans-1,2-Dichloroethene ND 0.0408 0.0350 ND 0.162 0.139 pass
cis-1,2-Dichloroethene ND 0.0404 0.0350 ND 0.160 0.139 pass
Trichloroethene ND 0.0404 0.0350 ND 0.217 0.188 pass
Tetrachloroethene ND 0.0409 0.0350 ND 0.277 0.237 pass
Compound Response Retention
Time (min)
Concentration
(ppbv)
Flag
Bromochloromethane (IS)742,037 11.02 5.21 pass
1,4-Difluorobenzene (IS)2,794,012 12.44 5.16 pass
Chlorobenzene-d5 (IS)2,375,449 16.58 4.92 pass
Xavier
X102323A_Humid Blank #1862
(ND) = Not Detected
(J) = Below Calibration Range, (E) = Above Calibration Range, (m) = Manual Integration
IS Acceptance Criteria: RT +/- 20 sec, Response +/- 40%
1.000
2023-10-23 19:42
TO15_SCNV6.M
Air
TDD
500mL load; Can #1862
Blank
Xavier_X102323D.v1
X2304550.D
1.000
Enthalpy Analytical
Job No.: 1023-118-1 EPA Method TO-15 Analysis -- Run
AECOM - Morrisville 60699512 Barrett’s Cleaners (DC510004)- Clayton, NC
X102323A_Humid Blank #1862
EA Job# 1023-118 Page 7 of 17
Flags
pass, m
pass
pass
pass
pass
(ND) = Not Detected
(J) = Below Calibration Range, (E) = Above Calibration Range, (m) = Manual Integration
IS Acceptance Criteria: RT +/- 20 sec, Response +/- 40%
Chlorobenzene-d5 (IS)2,826,177 16.58 4.92 pass
1,4-Difluorobenzene (IS)3,176,600 12.45 5.16 pass
Bromochloromethane (IS)851,133 11.02 5.21 pass
Compound Response Retention Time
(min)
Concentration
(ppbv)
Flag
Tetrachloroethene 1,482,627 4.53 5.12 88.6
Trichloroethene 1,083,366 4.61 5.06 91.2
cis-1,2-Dichloroethene 1,239,490 5.47 5.05 108
trans-1,2-Dichloroethene 1,047,712 5.10 5.10 100
Chloroethene (Vinyl chloride)435,975 5.24 5.00 105
Target Compound Response Concentration
(ppbv)
Expected
Conc (ppbv)
Recovery
(%)
Matrix Air
Enthalpy ID X102323A_5ppbv TO15 LCS
Pressurization Factor 1.000
Acquisition Date 2023-10-23 13:33
Instrument Method TO15_SCNV6.M
Batch Xavier_X102323D.v1
Data File X2304543.D
Dilution 1.000
Sample Name X102323A_5ppbv TO15 LCS
Sample Info.125mL load; Can #2035; GCMSPrepPg1281
Sample Type QC
Enthalpy Analytical
Job No.: 1023-118-1 EPA Method TO-15 Analysis -- Run
AECOM - Morrisville 60699512 Barrett’s Cleaners (DC510004)- Clayton, NC
EA Job# 1023-118 Page 8 of 17
Sample Name
Sample Info.
Sample Type
Batch
Data File
Dilution
Pressurization Factor
Acquisition Date
Instrument Method
Matrix
Parent
Enthalpy ID
Target Compound Response Concentration
(ppbv)
Expected
Conc (ppbv)
Parent
Conc (ppbv)
Recovery
(%)
Diff
(%)
Flags
Chloroethene (Vinyl chloride)452,765 5.21 5.00 5.24 104 0.5 pass
trans-1,2-Dichloroethene 1,093,812 5.10 5.10 5.10 100 0.0 pass
cis-1,2-Dichloroethene 1,275,431 5.39 5.05 5.47 107 1.5 pass
Trichloroethene 1,118,353 4.58 5.06 4.61 90.6 0.7 pass
Tetrachloroethene 1,540,716 4.58 5.12 4.53 89.6 1.2 pass
Compound Response Retention Time
(min)
Concentration
(ppbv)
Flag
Bromochloromethane (IS)888,681 11.02 5.21 pass
1,4-Difluorobenzene (IS)3,303,351 12.45 5.16 pass
Chlorobenzene-d5 (IS)2,902,407 16.58 4.92 pass
X102323A_5ppbv TO15 LCS LD
(ND) = Not Detected
(J) = Below Calibration Range, (E) = Above Calibration Range, (m) = Manual Integration
IS Acceptance Criteria: RT +/- 20 sec, Response +/- 40%
1.000
2023-10-23 14:21
TO15_SCNV6.M
Air
X102323A_5ppbv TO15 LCS
125mL load; Can #2035; GCMSPrepPg1281
QcDup
Xavier_X102323D.v1
X2304544.D
1.000
Enthalpy Analytical
Job No.: 1023-118-1 EPA Method TO-15 Analysis -- Run
AECOM - Morrisville 60699512 Barrett’s Cleaners (DC510004)- Clayton, NC
X102323A_5ppbv TO15 LCS LD
EA Job# 1023-118 Page 9 of 17

Narrative Summary

EA Job# 1023-118 Page 10 of 17

Enthalpy Analytical Narrative Summary

Company AECOM - Morrisville Client # Barrett’s Cleaners – Clayton,
NC; DC510004
Analyst TDD Job # 1023-118
Parameters EPA Method TO-15 # Samples 1 (1.29L) Can

Custody Dan Ward received the samples on 10/23/23 after being relinquished by
AECOM – Morrisville. He then delivered the samples the same day to
Enthalpy’s Durham Laboratory where Alyssa Miller logged them in on
10/23/23 at ambient temperature and in good condition.
Prior to, during, and after analysis, the sample was kept under lock with
access only to authorized personnel by Enthalpy Analytical, LLC.
Analysis The sample was analyzed for tetrachloroethylene (PCE),
trichloroethylene (TCE), cis-1,2-dichloroethylene, trans-1,2-
dichloroethylene, and vinyl chloride using the analytical procedures in
EPA Method TO-15, Determination of Volatile Organic Compounds
(VOCs) In Air Collected In Specially-Prepared Canisters And Analyzed
by Gas Chromatography/Mass Spectrometry (GC/MS).
Upon receipt, the canister pressure was measured and recorded. The can
was then pressurizaed and a dilution ratio was calculated. See the
Canister Pressurization form located in the Reports section.
The sample was analyzed undiluted.
The Agilent Technologies Model 6890N, Gas Chromatograph "Xavier"
(S/N US10721018) equipped with a 5975C VL Mass Selective Detector
(S/N US71215962) was used for this analysis. The samples and
standards were introduced directly to the analyzer using an Entech 7200
Preconcentrator.
Calibration The associated BFB tune analyses associated with the initial and
continuing calibrations met all method acceptance criteria.
The initial calibration (X100722A-TO15) met the 30% RSD criteria.
The initial calibration verification (ICV) met the 70-130% recovery
criteria. The continuing calibrations (CCV) met the 30% difference
criteria. Full calibration data is available upon request.
Chromatographic
Conditions
The acquisition method (TO15-SCN2v6.M) may be made available
upon request.
EA Job# 1023-118 Page 11 of 17

Enthalpy Analytical Narrative Summary
(continued)

QC Notes All internal standard area responses and retention time criteria were met
for this analysis.
The Laboratory Control Samples (LCS) associated with this sample data
met 70-130% recovery criteria.
The LCS was analyzed as a laboratory duplicate and met the 25%
difference acceptance criteria.
The laboratory humid blank associated with this analysis did not contain
any of the target analytes at a concentration greater than 3x their MDL.
The sample was analyzed within the 30-day holding time required by
the method.
Reporting Notes This analysis met the requirements of the TNI Standard. Any deviations
from the requirements of the reference method or TNI Standard have
been stated above.
The results presented in this report are representative of the samples as
provided to the laboratory.

EA Job# 1023-118 Page 12 of 17

General Reporting Notes

The following are general reporting notes that are applicable to all Enthalpy Analytical, LLC data
reports, unless specifically noted otherwise.

 Any analysis which refers to the method as “Type” represents a planned deviation from the
reference method. For instance a Hydrogen Sulfide assay from a Tedlar bag would be labeled
as “EPA Method 16-Type” because Tedlar bags are not mentioned as one of the collection
options in EPA Method 16.
 The acronym MDL represents the Minimum Detection Limit. Below this value the laboratory
cannot determine the presence of the analyte of interest reliably.
 The acronym LOQ represents the Limit of Quantification. Below this value the laboratory
cannot quantitate the analyte of interest within the criteria of the method.
 The acronym ND following a value indicates a non-detect or analytical result below the MDL.
 The letter J in the Qualifier or Flag column in the results indicates that the value is between
the MDL and the LOQ. The laboratory can positively identify the analyte of interest as
present, but the value should be considered an estimate.
 The letter E in the Qualifier or Flag column indicates an analytical result exceeding 100% of
the highest calibration point. The associated value should be considered as an estimate.
 Sample results are presented ‘as measured’ for single injection methodologies, or an average
value if multiple injections are made. If all injections are below the MDL, the sample is
considered non-detect and the ND value is presented. If one, but not all, are below the MDL,
the MDL value is used for any injections that are below the MDL. For example, if the MDL is
0.500 and LOQ is 1.00, and the instrument measures 0.355, 0.620, and 0.442 - the result
reported is the average of 0.500, 0.620, and 0.500 - - - i.e. 0.540 with a J flag.
 When a spike recovery (Bag Spike, Collocated Spike Train, or liquid matrix spike) is being
calculated, the native (unspiked) sample result is used in the calculations, as long as the value
is above the MDL. If a sample is ND, then 0 is used as the native amount (not the MDL
value).
 The acronym DF represents Dilution Factor. This number represents dilution of the sample
during the preparation and/or analysis process. The analytical result taken from a laboratory
instrument is multiplied by the DF to determine the final undiluted sample results.
 The addition of MS to the Sample ID represents a Matrix Spike. An aliquot of an actual
sample is spiked with a known amount of analyte so that a percent recovery value can be
determined. The MS analysis indicates what effect the sample matrix may have on the target
analyte, i.e. whether or not anything in the sample matrix interferes with the analysis of the
analyte(s).
EA Job# 1023-118 Page 13 of 17

General Reporting Notes
(continued)
 The addition of MSD to the Sample ID represents a Matrix Spike Duplicate. Prepared in the
same manner as a MS, the use of duplicate matrix spikes allows further confirmation of
laboratory quality by showing the consistency of results gained by performing the same steps
multiple times.
 The addition of LD to the Sample ID represents a Laboratory Duplicate. The analyst prepares
an additional aliquot of sample for testing and the results of the duplicate analysis are
compared to the initial result. The result should have a difference value of within 10% of the
initial result (if the results of the original analysis are greater than the LOQ).
 The addition of AD to the Sample ID represents an Alternate Dilution. The analyst prepares an
additional aliquot at a different dilution factor (usually double the initial factor). This analysis
helps confirm that no additional compound is present and coeluting or sharing absorbance with
the analyte of interest, as they would have a different response/absorbance than the analyte of
interest.
 The Sample ID LCS represents a Laboratory Control Sample. Clean matrix, similar to the
client sample matrix, prepared and analyzed by the laboratory using the same reagents, spiking
standards and procedures used for the client samples. The LCS is used to assess the control of
the laboratory’s analytical system. Whenever spikes are prepared for our client projects, two
spikes are retained as LCSs. The LCSs are labeled with the associated project number and kept
in-house at the appropriate temperature conditions. When the project samples are received for
analysis, the LCSs are analyzed to confirm that the analyte could be recovered from the media,
separate from the samples which were used on the project and which may have been affected
by source matrix, sample collection, and/or sample transport.
 Significant Figures: Where the reported value is much greater than unity (1.00) in the units
expressed, the number is rounded to a whole number of units, rather than to 3 significant
figures. For example, a value of 10,456.45 ug catch is rounded to 10,456 ug. There are five
significant digits displayed, but no confidence should be placed on more than two significant
digits. In the case of small numbers, generally 3 significant figures are presented, but still only
2 should be used with confidence. Many neat materials are only certified to 3 digits, and as the
mathematically correct final result is always 1 digit less than all its pre-cursors - 2 significant
figures are what are most defensible.
 Manual Integration: The data systems used for processing will flag manually integrated
peaks with an “M”. There are several reasons a peak may be manually integrated. These
reasons will be identified by the following two letter designations on sample chromatograms,
if provided in the report. The peak was not integrated by the software “NI”, the peak was
integrated incorrectly by the software “II” or the wrong peak was integrated by the software
“WP”. These codes will accompany the analyst’s manual integration stamp placed next to the
compound name on the chromatogram.
EA Job# 1023-118 Page 14 of 17

Sample Custody
EA Job# 1023-118 Page 15 of 17
EA Job# 1023-118 Page 16 of 17

This Is The Last Page
Of This Report.

EA Job# 1023-118 Page 17 of 17
ANALYTICAL REPORT
May 17, 2024
Revised Report
AECOM - Raleigh, NC
Sample Delivery Group:L1668457
Samples Received:10/20/2023
Project Number:60699512
Description:Barrett's Cleaners DC510004
Site:DC510004
Report To:Stephanie Hempel
5438 Wade Park Blvd.
Suite 200
Raleigh, NC 27607
Entire Report Reviewed By:
May 17, 2024
[Preliminary Report]
Chris McCord
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 mydata.pacelabs.com
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
AECOM - Raleigh, NC 60699512 L1668457 05/17/24 15:37 1 of 29
May 20, 2024
Chris McCord
Project Manager
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
AECOM - Raleigh, NC 60699512 L1668457 05/20/24 14:52 1 of 29
TABLE OF CONTENTS
Cp: Cover Page 1
Tc: Table of Contents 2
Ss: Sample Summary 3
Cn: Case Narrative 4
Sr: Sample Results 5
MW-1 L1668457-01 5
MW-4 L1668457-02 7
MW-3 L1668457-03 9
MW-2 L1668457-04 11
MW-5 L1668457-05 13
Qc: Quality Control Summary 15
Volatile Organic Compounds (GC/MS) by Method 8260D 15
Gl: Glossary of Terms 24
Al: Accreditations & Locations 25
Sc: Sample Chain of Custody 26
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
AECOM - Raleigh, NC 60699512 L1668457 05/17/24 15:37 2 of 29
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
AECOM - Raleigh, NC 60699512 L1668457 05/20/24 14:52 2 of 29
SAMPLE SUMMARY
Collected by Collected date/time Received date/time
MW-1 L1668457-01 GW Jaiden Garden 10/19/23 11:10 10/20/23 09:00
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (GC/MS) by Method 8260D WG2156922 1 10/26/23 16:40 10/26/23 16:40 JCP Mt. Juliet, TN
Collected by Collected date/time Received date/time
MW-4 L1668457-02 GW Jaiden Garden 10/19/23 12:35 10/20/23 09:00
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (GC/MS) by Method 8260D WG2156922 1 10/26/23 17:02 10/26/23 17:02 JCP Mt. Juliet, TN
Collected by Collected date/time Received date/time
MW-3 L1668457-03 GW Jaiden Garden 10/19/23 10:10 10/20/23 09:00
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (GC/MS) by Method 8260D WG2156922 1 10/26/23 17:24 10/26/23 17:24 JCP Mt. Juliet, TN
Collected by Collected date/time Received date/time
MW-2 L1668457-04 GW Jaiden Garden 10/19/23 12:35 10/20/23 09:00
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (GC/MS) by Method 8260D WG2157232 1 10/25/23 00:03 10/25/23 00:03 JCP Mt. Juliet, TN
Volatile Organic Compounds (GC/MS) by Method 8260D WG2157952 20 10/25/23 19:32 10/25/23 19:32 JCP Mt. Juliet, TN
Collected by Collected date/time Received date/time
MW-5 L1668457-05 GW Jaiden Garden 10/19/23 12:00 10/20/23 09:00
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (GC/MS) by Method 8260D WG2157232 1 10/25/23 00:25 10/25/23 00:25 JCP Mt. Juliet, TN
Volatile Organic Compounds (GC/MS) by Method 8260D WG2157952 1 10/25/23 17:24 10/25/23 17:24 JCP Mt. Juliet, TN
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
AECOM - Raleigh, NC 60699512 L1668457 05/17/24 15:37 3 of 29
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
AECOM - Raleigh, NC 60699512 L1668457 05/20/24 14:52 3 of 29
CASE NARRATIVE
Unless qualified or notated within the narrative below, all sample aliquots were received at the correct
temperature, in the proper containers, with the appropriate preservatives, and within method specified
holding times. 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]
Chris McCord
Project Manager
Report Revision History
Level II Report - Version 1: 10/27/23 18:52
Project Comments
5/17/24: Revised report to switch the data reported for MW-2 and MW-4 per client request.
Volatile Organic Compounds (GC/MS) by Method 8260D
The reported concentration is an estimate. The continuing calibration standard associated with this data responded low. Method sensitivity
check is acceptable.
Batch Lab Sample ID Analytes
WG2156922 L1668457-01 1,2,4-Trichlorobenzene, 1,2-Dibromo-3-Chloropropane, 2,2-Dichloropropane and
Hexachloro-1,3-butadiene
WG2156922 L1668457-02 1,2,4-Trichlorobenzene, 1,2-Dibromo-3-Chloropropane, 2,2-Dichloropropane and
Hexachloro-1,3-butadiene
WG2156922 L1668457-03 1,2,4-Trichlorobenzene, 1,2-Dibromo-3-Chloropropane, 2,2-Dichloropropane and
Hexachloro-1,3-butadiene
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
AECOM - Raleigh, NC 60699512 L1668457 05/17/24 15:37 4 of 29
Chris McCord
Project Manager
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
AECOM - Raleigh, NC 60699512 L1668457 05/20/24 14:52 4 of 29
SAMPLE RESULTS - 01
L1668457
MW-1
Collected date/time: 10/19/23 11:10
Volatile Organic Compounds (GC/MS) by Method 8260D
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
Acetone U 11.3 50.0 1 10/26/2023 16:40 WG2156922
Acrolein U 2.54 50.0 1 10/26/2023 16:40 WG2156922
Acrylonitrile U 0.671 10.0 1 10/26/2023 16:40 WG2156922
Benzene U 0.0941 1.00 1 10/26/2023 16:40 WG2156922
Bromobenzene U 0.118 1.00 1 10/26/2023 16:40 WG2156922
Bromodichloromethane U 0.136 1.00 1 10/26/2023 16:40 WG2156922
Bromoform U 0.129 1.00 1 10/26/2023 16:40 WG2156922
Bromomethane U 0.605 5.00 1 10/26/2023 16:40 WG2156922
n-Butylbenzene U 0.157 1.00 1 10/26/2023 16:40 WG2156922
sec-Butylbenzene U 0.125 1.00 1 10/26/2023 16:40 WG2156922
tert-Butylbenzene U 0.127 1.00 1 10/26/2023 16:40 WG2156922
Carbon tetrachloride U 0.128 1.00 1 10/26/2023 16:40 WG2156922
Chlorobenzene U 0.116 1.00 1 10/26/2023 16:40 WG2156922
Chlorodibromomethane U 0.140 1.00 1 10/26/2023 16:40 WG2156922
Chloroethane U 0.192 5.00 1 10/26/2023 16:40 WG2156922
Chloroform 0.317 J 0.111 5.00 1 10/26/2023 16:40 WG2156922
Chloromethane U 0.960 2.50 1 10/26/2023 16:40 WG2156922
2-Chlorotoluene U 0.106 1.00 1 10/26/2023 16:40 WG2156922
4-Chlorotoluene U 0.114 1.00 1 10/26/2023 16:40 WG2156922
1,2-Dibromo-3-Chloropropane U C3 0.276 5.00 1 10/26/2023 16:40 WG2156922
1,2-Dibromoethane U 0.126 1.00 1 10/26/2023 16:40 WG2156922
Dibromomethane U 0.122 1.00 1 10/26/2023 16:40 WG2156922
1,2-Dichlorobenzene U 0.107 1.00 1 10/26/2023 16:40 WG2156922
1,3-Dichlorobenzene U 0.110 1.00 1 10/26/2023 16:40 WG2156922
1,4-Dichlorobenzene U 0.120 1.00 1 10/26/2023 16:40 WG2156922
Dichlorodifluoromethane U 0.374 5.00 1 10/26/2023 16:40 WG2156922
1,1-Dichloroethane U 0.100 1.00 1 10/26/2023 16:40 WG2156922
1,2-Dichloroethane U 0.0819 1.00 1 10/26/2023 16:40 WG2156922
1,1-Dichloroethene U 0.188 1.00 1 10/26/2023 16:40 WG2156922
cis-1,2-Dichloroethene U 0.126 1.00 1 10/26/2023 16:40 WG2156922
trans-1,2-Dichloroethene U 0.149 1.00 1 10/26/2023 16:40 WG2156922
1,2-Dichloropropane U 0.149 1.00 1 10/26/2023 16:40 WG2156922
1,1-Dichloropropene U 0.142 1.00 1 10/26/2023 16:40 WG2156922
1,3-Dichloropropane U 0.110 1.00 1 10/26/2023 16:40 WG2156922
cis-1,3-Dichloropropene U 0.111 1.00 1 10/26/2023 16:40 WG2156922
trans-1,3-Dichloropropene U 0.118 1.00 1 10/26/2023 16:40 WG2156922
2,2-Dichloropropane U C3 0.161 1.00 1 10/26/2023 16:40 WG2156922
Di-isopropyl ether U 0.105 1.00 1 10/26/2023 16:40 WG2156922
Ethylbenzene U 0.137 1.00 1 10/26/2023 16:40 WG2156922
Hexachloro-1,3-butadiene U C3 0.337 1.00 1 10/26/2023 16:40 WG2156922
Isopropylbenzene U 0.105 1.00 1 10/26/2023 16:40 WG2156922
p-Isopropyltoluene U 0.120 1.00 1 10/26/2023 16:40 WG2156922
2-Butanone (MEK)U 1.19 10.0 1 10/26/2023 16:40 WG2156922
Methylene Chloride U 0.430 5.00 1 10/26/2023 16:40 WG2156922
4-Methyl-2-pentanone (MIBK)U 0.478 10.0 1 10/26/2023 16:40 WG2156922
Methyl tert-butyl ether U 0.101 1.00 1 10/26/2023 16:40 WG2156922
Naphthalene U 1.00 5.00 1 10/26/2023 16:40 WG2156922
n-Propylbenzene U 0.0993 1.00 1 10/26/2023 16:40 WG2156922
Styrene U 0.118 1.00 1 10/26/2023 16:40 WG2156922
1,1,1,2-Tetrachloroethane U 0.147 1.00 1 10/26/2023 16:40 WG2156922
1,1,2,2-Tetrachloroethane U 0.133 1.00 1 10/26/2023 16:40 WG2156922
1,1,2-Trichlorotrifluoroethane U 0.180 1.00 1 10/26/2023 16:40 WG2156922
Tetrachloroethene 22.7 0.300 1.00 1 10/26/2023 16:40 WG2156922
Toluene U 0.278 1.00 1 10/26/2023 16:40 WG2156922
1,2,3-Trichlorobenzene U 0.230 1.00 1 10/26/2023 16:40 WG2156922
1,2,4-Trichlorobenzene U C3 0.481 1.00 1 10/26/2023 16:40 WG2156922
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
AECOM - Raleigh, NC 60699512 L1668457 05/17/24 15:37 5 of 29
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
AECOM - Raleigh, NC 60699512 L1668457 05/20/24 14:52 5 of 29
SAMPLE RESULTS - 01
L1668457
MW-1
Collected date/time: 10/19/23 11:10
Volatile Organic Compounds (GC/MS) by Method 8260D
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
1,1,1-Trichloroethane U 0.149 1.00 1 10/26/2023 16:40 WG2156922
1,1,2-Trichloroethane U 0.158 1.00 1 10/26/2023 16:40 WG2156922
Trichloroethene U 0.190 1.00 1 10/26/2023 16:40 WG2156922
Trichlorofluoromethane U 0.160 5.00 1 10/26/2023 16:40 WG2156922
1,2,3-Trichloropropane U 0.237 2.50 1 10/26/2023 16:40 WG2156922
1,2,4-Trimethylbenzene U 0.322 1.00 1 10/26/2023 16:40 WG2156922
1,2,3-Trimethylbenzene U 0.104 1.00 1 10/26/2023 16:40 WG2156922
1,3,5-Trimethylbenzene U 0.104 1.00 1 10/26/2023 16:40 WG2156922
Vinyl chloride U 0.234 1.00 1 10/26/2023 16:40 WG2156922
Xylenes, Total U 0.174 3.00 1 10/26/2023 16:40 WG2156922
(S) Toluene-d8 103 80.0-120 10/26/2023 16:40 WG2156922
(S) 4-Bromofluorobenzene 93.3 77.0-126 10/26/2023 16:40 WG2156922
(S) 1,2-Dichloroethane-d4 109 70.0-130 10/26/2023 16:40 WG2156922
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
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ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
AECOM - Raleigh, NC 60699512 L1668457 05/20/24 14:52 6 of 29
SAMPLE RESULTS - 02
L1668457
MW-4
Collected date/time: 10/19/23 12:35
Volatile Organic Compounds (GC/MS) by Method 8260D
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
Acetone U 11.3 50.0 1 10/26/2023 17:02 WG2156922
Acrolein U 2.54 50.0 1 10/26/2023 17:02 WG2156922
Acrylonitrile U 0.671 10.0 1 10/26/2023 17:02 WG2156922
Benzene 0.202 J 0.0941 1.00 1 10/26/2023 17:02 WG2156922
Bromobenzene U 0.118 1.00 1 10/26/2023 17:02 WG2156922
Bromodichloromethane U 0.136 1.00 1 10/26/2023 17:02 WG2156922
Bromoform U 0.129 1.00 1 10/26/2023 17:02 WG2156922
Bromomethane U 0.605 5.00 1 10/26/2023 17:02 WG2156922
n-Butylbenzene U 0.157 1.00 1 10/26/2023 17:02 WG2156922
sec-Butylbenzene U 0.125 1.00 1 10/26/2023 17:02 WG2156922
tert-Butylbenzene U 0.127 1.00 1 10/26/2023 17:02 WG2156922
Carbon tetrachloride U 0.128 1.00 1 10/26/2023 17:02 WG2156922
Chlorobenzene U 0.116 1.00 1 10/26/2023 17:02 WG2156922
Chlorodibromomethane U 0.140 1.00 1 10/26/2023 17:02 WG2156922
Chloroethane U 0.192 5.00 1 10/26/2023 17:02 WG2156922
Chloroform U 0.111 5.00 1 10/26/2023 17:02 WG2156922
Chloromethane U 0.960 2.50 1 10/26/2023 17:02 WG2156922
2-Chlorotoluene U 0.106 1.00 1 10/26/2023 17:02 WG2156922
4-Chlorotoluene U 0.114 1.00 1 10/26/2023 17:02 WG2156922
1,2-Dibromo-3-Chloropropane U C3 0.276 5.00 1 10/26/2023 17:02 WG2156922
1,2-Dibromoethane U 0.126 1.00 1 10/26/2023 17:02 WG2156922
Dibromomethane U 0.122 1.00 1 10/26/2023 17:02 WG2156922
1,2-Dichlorobenzene U 0.107 1.00 1 10/26/2023 17:02 WG2156922
1,3-Dichlorobenzene U 0.110 1.00 1 10/26/2023 17:02 WG2156922
1,4-Dichlorobenzene U 0.120 1.00 1 10/26/2023 17:02 WG2156922
Dichlorodifluoromethane U 0.374 5.00 1 10/26/2023 17:02 WG2156922
1,1-Dichloroethane U 0.100 1.00 1 10/26/2023 17:02 WG2156922
1,2-Dichloroethane U 0.0819 1.00 1 10/26/2023 17:02 WG2156922
1,1-Dichloroethene U 0.188 1.00 1 10/26/2023 17:02 WG2156922
cis-1,2-Dichloroethene U 0.126 1.00 1 10/26/2023 17:02 WG2156922
trans-1,2-Dichloroethene U 0.149 1.00 1 10/26/2023 17:02 WG2156922
1,2-Dichloropropane U 0.149 1.00 1 10/26/2023 17:02 WG2156922
1,1-Dichloropropene U 0.142 1.00 1 10/26/2023 17:02 WG2156922
1,3-Dichloropropane U 0.110 1.00 1 10/26/2023 17:02 WG2156922
cis-1,3-Dichloropropene U 0.111 1.00 1 10/26/2023 17:02 WG2156922
trans-1,3-Dichloropropene U 0.118 1.00 1 10/26/2023 17:02 WG2156922
2,2-Dichloropropane U C3 0.161 1.00 1 10/26/2023 17:02 WG2156922
Di-isopropyl ether U 0.105 1.00 1 10/26/2023 17:02 WG2156922
Ethylbenzene U 0.137 1.00 1 10/26/2023 17:02 WG2156922
Hexachloro-1,3-butadiene U C3 0.337 1.00 1 10/26/2023 17:02 WG2156922
Isopropylbenzene U 0.105 1.00 1 10/26/2023 17:02 WG2156922
p-Isopropyltoluene U 0.120 1.00 1 10/26/2023 17:02 WG2156922
2-Butanone (MEK)U 1.19 10.0 1 10/26/2023 17:02 WG2156922
Methylene Chloride U 0.430 5.00 1 10/26/2023 17:02 WG2156922
4-Methyl-2-pentanone (MIBK)U 0.478 10.0 1 10/26/2023 17:02 WG2156922
Methyl tert-butyl ether U 0.101 1.00 1 10/26/2023 17:02 WG2156922
Naphthalene U 1.00 5.00 1 10/26/2023 17:02 WG2156922
n-Propylbenzene U 0.0993 1.00 1 10/26/2023 17:02 WG2156922
Styrene U 0.118 1.00 1 10/26/2023 17:02 WG2156922
1,1,1,2-Tetrachloroethane U 0.147 1.00 1 10/26/2023 17:02 WG2156922
1,1,2,2-Tetrachloroethane U 0.133 1.00 1 10/26/2023 17:02 WG2156922
1,1,2-Trichlorotrifluoroethane U 0.180 1.00 1 10/26/2023 17:02 WG2156922
Tetrachloroethene 1.13 0.300 1.00 1 10/26/2023 17:02 WG2156922
Toluene U 0.278 1.00 1 10/26/2023 17:02 WG2156922
1,2,3-Trichlorobenzene U 0.230 1.00 1 10/26/2023 17:02 WG2156922
1,2,4-Trichlorobenzene U C3 0.481 1.00 1 10/26/2023 17:02 WG2156922
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
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ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
AECOM - Raleigh, NC 60699512 L1668457 05/20/24 14:52 7 of 29
SAMPLE RESULTS - 02
L1668457
MW-4
Collected date/time: 10/19/23 12:35
Volatile Organic Compounds (GC/MS) by Method 8260D
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
1,1,1-Trichloroethane U 0.149 1.00 1 10/26/2023 17:02 WG2156922
1,1,2-Trichloroethane U 0.158 1.00 1 10/26/2023 17:02 WG2156922
Trichloroethene U 0.190 1.00 1 10/26/2023 17:02 WG2156922
Trichlorofluoromethane U 0.160 5.00 1 10/26/2023 17:02 WG2156922
1,2,3-Trichloropropane U 0.237 2.50 1 10/26/2023 17:02 WG2156922
1,2,4-Trimethylbenzene U 0.322 1.00 1 10/26/2023 17:02 WG2156922
1,2,3-Trimethylbenzene U 0.104 1.00 1 10/26/2023 17:02 WG2156922
1,3,5-Trimethylbenzene U 0.104 1.00 1 10/26/2023 17:02 WG2156922
Vinyl chloride U 0.234 1.00 1 10/26/2023 17:02 WG2156922
Xylenes, Total U 0.174 3.00 1 10/26/2023 17:02 WG2156922
(S) Toluene-d8 105 80.0-120 10/26/2023 17:02 WG2156922
(S) 4-Bromofluorobenzene 91.9 77.0-126 10/26/2023 17:02 WG2156922
(S) 1,2-Dichloroethane-d4 106 70.0-130 10/26/2023 17:02 WG2156922
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
AECOM - Raleigh, NC 60699512 L1668457 05/17/24 15:37 8 of 29
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
AECOM - Raleigh, NC 60699512 L1668457 05/20/24 14:52 8 of 29
SAMPLE RESULTS - 03
L1668457
MW-3
Collected date/time: 10/19/23 10:10
Volatile Organic Compounds (GC/MS) by Method 8260D
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
Acetone U 11.3 50.0 1 10/26/2023 17:24 WG2156922
Acrolein U 2.54 50.0 1 10/26/2023 17:24 WG2156922
Acrylonitrile U 0.671 10.0 1 10/26/2023 17:24 WG2156922
Benzene U 0.0941 1.00 1 10/26/2023 17:24 WG2156922
Bromobenzene U 0.118 1.00 1 10/26/2023 17:24 WG2156922
Bromodichloromethane U 0.136 1.00 1 10/26/2023 17:24 WG2156922
Bromoform U 0.129 1.00 1 10/26/2023 17:24 WG2156922
Bromomethane U 0.605 5.00 1 10/26/2023 17:24 WG2156922
n-Butylbenzene U 0.157 1.00 1 10/26/2023 17:24 WG2156922
sec-Butylbenzene U 0.125 1.00 1 10/26/2023 17:24 WG2156922
tert-Butylbenzene U 0.127 1.00 1 10/26/2023 17:24 WG2156922
Carbon tetrachloride U 0.128 1.00 1 10/26/2023 17:24 WG2156922
Chlorobenzene U 0.116 1.00 1 10/26/2023 17:24 WG2156922
Chlorodibromomethane U 0.140 1.00 1 10/26/2023 17:24 WG2156922
Chloroethane U 0.192 5.00 1 10/26/2023 17:24 WG2156922
Chloroform 0.128 J 0.111 5.00 1 10/26/2023 17:24 WG2156922
Chloromethane U 0.960 2.50 1 10/26/2023 17:24 WG2156922
2-Chlorotoluene U 0.106 1.00 1 10/26/2023 17:24 WG2156922
4-Chlorotoluene U 0.114 1.00 1 10/26/2023 17:24 WG2156922
1,2-Dibromo-3-Chloropropane U C3 0.276 5.00 1 10/26/2023 17:24 WG2156922
1,2-Dibromoethane U 0.126 1.00 1 10/26/2023 17:24 WG2156922
Dibromomethane U 0.122 1.00 1 10/26/2023 17:24 WG2156922
1,2-Dichlorobenzene U 0.107 1.00 1 10/26/2023 17:24 WG2156922
1,3-Dichlorobenzene U 0.110 1.00 1 10/26/2023 17:24 WG2156922
1,4-Dichlorobenzene U 0.120 1.00 1 10/26/2023 17:24 WG2156922
Dichlorodifluoromethane U 0.374 5.00 1 10/26/2023 17:24 WG2156922
1,1-Dichloroethane U 0.100 1.00 1 10/26/2023 17:24 WG2156922
1,2-Dichloroethane U 0.0819 1.00 1 10/26/2023 17:24 WG2156922
1,1-Dichloroethene U 0.188 1.00 1 10/26/2023 17:24 WG2156922
cis-1,2-Dichloroethene U 0.126 1.00 1 10/26/2023 17:24 WG2156922
trans-1,2-Dichloroethene U 0.149 1.00 1 10/26/2023 17:24 WG2156922
1,2-Dichloropropane U 0.149 1.00 1 10/26/2023 17:24 WG2156922
1,1-Dichloropropene U 0.142 1.00 1 10/26/2023 17:24 WG2156922
1,3-Dichloropropane U 0.110 1.00 1 10/26/2023 17:24 WG2156922
cis-1,3-Dichloropropene U 0.111 1.00 1 10/26/2023 17:24 WG2156922
trans-1,3-Dichloropropene U 0.118 1.00 1 10/26/2023 17:24 WG2156922
2,2-Dichloropropane U C3 0.161 1.00 1 10/26/2023 17:24 WG2156922
Di-isopropyl ether U 0.105 1.00 1 10/26/2023 17:24 WG2156922
Ethylbenzene U 0.137 1.00 1 10/26/2023 17:24 WG2156922
Hexachloro-1,3-butadiene U C3 0.337 1.00 1 10/26/2023 17:24 WG2156922
Isopropylbenzene U 0.105 1.00 1 10/26/2023 17:24 WG2156922
p-Isopropyltoluene U 0.120 1.00 1 10/26/2023 17:24 WG2156922
2-Butanone (MEK)U 1.19 10.0 1 10/26/2023 17:24 WG2156922
Methylene Chloride U 0.430 5.00 1 10/26/2023 17:24 WG2156922
4-Methyl-2-pentanone (MIBK)U 0.478 10.0 1 10/26/2023 17:24 WG2156922
Methyl tert-butyl ether U 0.101 1.00 1 10/26/2023 17:24 WG2156922
Naphthalene U 1.00 5.00 1 10/26/2023 17:24 WG2156922
n-Propylbenzene U 0.0993 1.00 1 10/26/2023 17:24 WG2156922
Styrene U 0.118 1.00 1 10/26/2023 17:24 WG2156922
1,1,1,2-Tetrachloroethane U 0.147 1.00 1 10/26/2023 17:24 WG2156922
1,1,2,2-Tetrachloroethane U 0.133 1.00 1 10/26/2023 17:24 WG2156922
1,1,2-Trichlorotrifluoroethane U 0.180 1.00 1 10/26/2023 17:24 WG2156922
Tetrachloroethene U 0.300 1.00 1 10/26/2023 17:24 WG2156922
Toluene U 0.278 1.00 1 10/26/2023 17:24 WG2156922
1,2,3-Trichlorobenzene U 0.230 1.00 1 10/26/2023 17:24 WG2156922
1,2,4-Trichlorobenzene U C3 0.481 1.00 1 10/26/2023 17:24 WG2156922
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
AECOM - Raleigh, NC 60699512 L1668457 05/17/24 15:37 9 of 29
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
AECOM - Raleigh, NC 60699512 L1668457 05/20/24 14:52 9 of 29
SAMPLE RESULTS - 03
L1668457
MW-3
Collected date/time: 10/19/23 10:10
Volatile Organic Compounds (GC/MS) by Method 8260D
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
1,1,1-Trichloroethane U 0.149 1.00 1 10/26/2023 17:24 WG2156922
1,1,2-Trichloroethane U 0.158 1.00 1 10/26/2023 17:24 WG2156922
Trichloroethene U 0.190 1.00 1 10/26/2023 17:24 WG2156922
Trichlorofluoromethane U 0.160 5.00 1 10/26/2023 17:24 WG2156922
1,2,3-Trichloropropane U 0.237 2.50 1 10/26/2023 17:24 WG2156922
1,2,4-Trimethylbenzene U 0.322 1.00 1 10/26/2023 17:24 WG2156922
1,2,3-Trimethylbenzene U 0.104 1.00 1 10/26/2023 17:24 WG2156922
1,3,5-Trimethylbenzene U 0.104 1.00 1 10/26/2023 17:24 WG2156922
Vinyl chloride U 0.234 1.00 1 10/26/2023 17:24 WG2156922
Xylenes, Total U 0.174 3.00 1 10/26/2023 17:24 WG2156922
(S) Toluene-d8 104 80.0-120 10/26/2023 17:24 WG2156922
(S) 4-Bromofluorobenzene 92.6 77.0-126 10/26/2023 17:24 WG2156922
(S) 1,2-Dichloroethane-d4 107 70.0-130 10/26/2023 17:24 WG2156922
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
AECOM - Raleigh, NC 60699512 L1668457 05/17/24 15:37 10 of 29
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
AECOM - Raleigh, NC 60699512 L1668457 05/20/24 14:52 10 of 29
SAMPLE RESULTS - 04
L1668457
MW-2
Collected date/time: 10/19/23 12:35
Volatile Organic Compounds (GC/MS) by Method 8260D
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
Acetone U 11.3 50.0 1 10/25/2023 00:03 WG2157232
Acrolein U 2.54 50.0 1 10/25/2023 00:03 WG2157232
Acrylonitrile U 0.671 10.0 1 10/25/2023 00:03 WG2157232
Benzene U 0.0941 1.00 1 10/25/2023 00:03 WG2157232
Bromobenzene U 0.118 1.00 1 10/25/2023 00:03 WG2157232
Bromodichloromethane 0.196 J 0.136 1.00 1 10/25/2023 00:03 WG2157232
Bromoform U 0.129 1.00 1 10/25/2023 00:03 WG2157232
Bromomethane U 0.605 5.00 1 10/25/2023 00:03 WG2157232
n-Butylbenzene U 0.157 1.00 1 10/25/2023 00:03 WG2157232
sec-Butylbenzene U 0.125 1.00 1 10/25/2023 00:03 WG2157232
tert-Butylbenzene U 0.127 1.00 1 10/25/2023 00:03 WG2157232
Carbon tetrachloride U 0.128 1.00 1 10/25/2023 00:03 WG2157232
Chlorobenzene U 0.116 1.00 1 10/25/2023 00:03 WG2157232
Chlorodibromomethane U 0.140 1.00 1 10/25/2023 00:03 WG2157232
Chloroethane U 0.192 5.00 1 10/25/2023 00:03 WG2157232
Chloroform 1.22 J 0.111 5.00 1 10/25/2023 00:03 WG2157232
Chloromethane U 0.960 2.50 1 10/25/2023 00:03 WG2157232
2-Chlorotoluene U 0.106 1.00 1 10/25/2023 00:03 WG2157232
4-Chlorotoluene U 0.114 1.00 1 10/25/2023 00:03 WG2157232
1,2-Dibromo-3-Chloropropane U 0.276 5.00 1 10/25/2023 00:03 WG2157232
1,2-Dibromoethane U 0.126 1.00 1 10/25/2023 00:03 WG2157232
Dibromomethane U 0.122 1.00 1 10/25/2023 00:03 WG2157232
1,2-Dichlorobenzene U 0.107 1.00 1 10/25/2023 00:03 WG2157232
1,3-Dichlorobenzene U 0.110 1.00 1 10/25/2023 00:03 WG2157232
1,4-Dichlorobenzene U 0.120 1.00 1 10/25/2023 00:03 WG2157232
Dichlorodifluoromethane U 0.374 5.00 1 10/25/2023 00:03 WG2157232
1,1-Dichloroethane U 0.100 1.00 1 10/25/2023 00:03 WG2157232
1,2-Dichloroethane U 0.0819 1.00 1 10/25/2023 00:03 WG2157232
1,1-Dichloroethene U 0.188 1.00 1 10/25/2023 00:03 WG2157232
cis-1,2-Dichloroethene 4.45 0.126 1.00 1 10/25/2023 00:03 WG2157232
trans-1,2-Dichloroethene U 0.149 1.00 1 10/25/2023 00:03 WG2157232
1,2-Dichloropropane U 0.149 1.00 1 10/25/2023 00:03 WG2157232
1,1-Dichloropropene U 0.142 1.00 1 10/25/2023 00:03 WG2157232
1,3-Dichloropropane U 0.110 1.00 1 10/25/2023 00:03 WG2157232
cis-1,3-Dichloropropene U 0.111 1.00 1 10/25/2023 00:03 WG2157232
trans-1,3-Dichloropropene U 0.118 1.00 1 10/25/2023 00:03 WG2157232
2,2-Dichloropropane U 0.161 1.00 1 10/25/2023 00:03 WG2157232
Di-isopropyl ether U 0.105 1.00 1 10/25/2023 00:03 WG2157232
Ethylbenzene U 0.137 1.00 1 10/25/2023 00:03 WG2157232
Hexachloro-1,3-butadiene U 0.337 1.00 1 10/25/2023 00:03 WG2157232
Isopropylbenzene U 0.105 1.00 1 10/25/2023 00:03 WG2157232
p-Isopropyltoluene U 0.120 1.00 1 10/25/2023 00:03 WG2157232
2-Butanone (MEK)U 1.19 10.0 1 10/25/2023 00:03 WG2157232
Methylene Chloride U 0.430 5.00 1 10/25/2023 00:03 WG2157232
4-Methyl-2-pentanone (MIBK)U 0.478 10.0 1 10/25/2023 00:03 WG2157232
Methyl tert-butyl ether U 0.101 1.00 1 10/25/2023 00:03 WG2157232
Naphthalene U 1.00 5.00 1 10/25/2023 00:03 WG2157232
n-Propylbenzene U 0.0993 1.00 1 10/25/2023 00:03 WG2157232
Styrene U 0.118 1.00 1 10/25/2023 00:03 WG2157232
1,1,1,2-Tetrachloroethane U 0.147 1.00 1 10/25/2023 00:03 WG2157232
1,1,2,2-Tetrachloroethane U 0.133 1.00 1 10/25/2023 00:03 WG2157232
1,1,2-Trichlorotrifluoroethane U 0.180 1.00 1 10/25/2023 00:03 WG2157232
Tetrachloroethene 606 6.00 20.0 20 10/25/2023 19:32 WG2157952
Toluene U 0.278 1.00 1 10/25/2023 00:03 WG2157232
1,2,3-Trichlorobenzene U 0.230 1.00 1 10/25/2023 00:03 WG2157232
1,2,4-Trichlorobenzene U 0.481 1.00 1 10/25/2023 00:03 WG2157232
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
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ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
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SAMPLE RESULTS - 04
L1668457
MW-2
Collected date/time: 10/19/23 12:35
Volatile Organic Compounds (GC/MS) by Method 8260D
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
1,1,1-Trichloroethane U 0.149 1.00 1 10/25/2023 00:03 WG2157232
1,1,2-Trichloroethane U 0.158 1.00 1 10/25/2023 00:03 WG2157232
Trichloroethene 23.4 0.190 1.00 1 10/25/2023 00:03 WG2157232
Trichlorofluoromethane U 0.160 5.00 1 10/25/2023 00:03 WG2157232
1,2,3-Trichloropropane U 0.237 2.50 1 10/25/2023 00:03 WG2157232
1,2,4-Trimethylbenzene U 0.322 1.00 1 10/25/2023 00:03 WG2157232
1,2,3-Trimethylbenzene U 0.104 1.00 1 10/25/2023 00:03 WG2157232
1,3,5-Trimethylbenzene U 0.104 1.00 1 10/25/2023 00:03 WG2157232
Vinyl chloride U 0.234 1.00 1 10/25/2023 00:03 WG2157232
Xylenes, Total U 0.174 3.00 1 10/25/2023 00:03 WG2157232
(S) Toluene-d8 103 80.0-120 10/25/2023 00:03 WG2157232
(S) Toluene-d8 109 80.0-120 10/25/2023 19:32 WG2157952
(S) 4-Bromofluorobenzene 92.1 77.0-126 10/25/2023 00:03 WG2157232
(S) 4-Bromofluorobenzene 109 77.0-126 10/25/2023 19:32 WG2157952
(S) 1,2-Dichloroethane-d4 102 70.0-130 10/25/2023 00:03 WG2157232
(S) 1,2-Dichloroethane-d4 107 70.0-130 10/25/2023 19:32 WG2157952
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
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ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
AECOM - Raleigh, NC 60699512 L1668457 05/20/24 14:52 12 of 29
SAMPLE RESULTS - 05
L1668457
MW-5
Collected date/time: 10/19/23 12:00
Volatile Organic Compounds (GC/MS) by Method 8260D
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
Acetone U 11.3 50.0 1 10/25/2023 00:25 WG2157232
Acrolein U 2.54 50.0 1 10/25/2023 00:25 WG2157232
Acrylonitrile U 0.671 10.0 1 10/25/2023 00:25 WG2157232
Benzene U 0.0941 1.00 1 10/25/2023 00:25 WG2157232
Bromobenzene U 0.118 1.00 1 10/25/2023 00:25 WG2157232
Bromodichloromethane U 0.136 1.00 1 10/25/2023 00:25 WG2157232
Bromoform U 0.129 1.00 1 10/25/2023 00:25 WG2157232
Bromomethane U 0.605 5.00 1 10/25/2023 00:25 WG2157232
n-Butylbenzene U 0.157 1.00 1 10/25/2023 00:25 WG2157232
sec-Butylbenzene U 0.125 1.00 1 10/25/2023 00:25 WG2157232
tert-Butylbenzene U 0.127 1.00 1 10/25/2023 00:25 WG2157232
Carbon tetrachloride U 0.128 1.00 1 10/25/2023 00:25 WG2157232
Chlorobenzene U 0.116 1.00 1 10/25/2023 00:25 WG2157232
Chlorodibromomethane U 0.140 1.00 1 10/25/2023 00:25 WG2157232
Chloroethane U 0.192 5.00 1 10/25/2023 00:25 WG2157232
Chloroform U 0.111 5.00 1 10/25/2023 00:25 WG2157232
Chloromethane U 0.960 2.50 1 10/25/2023 00:25 WG2157232
2-Chlorotoluene U 0.106 1.00 1 10/25/2023 00:25 WG2157232
4-Chlorotoluene U 0.114 1.00 1 10/25/2023 00:25 WG2157232
1,2-Dibromo-3-Chloropropane U 0.276 5.00 1 10/25/2023 00:25 WG2157232
1,2-Dibromoethane U 0.126 1.00 1 10/25/2023 00:25 WG2157232
Dibromomethane U 0.122 1.00 1 10/25/2023 00:25 WG2157232
1,2-Dichlorobenzene U 0.107 1.00 1 10/25/2023 00:25 WG2157232
1,3-Dichlorobenzene U 0.110 1.00 1 10/25/2023 00:25 WG2157232
1,4-Dichlorobenzene U 0.120 1.00 1 10/25/2023 00:25 WG2157232
Dichlorodifluoromethane U 0.374 5.00 1 10/25/2023 00:25 WG2157232
1,1-Dichloroethane U 0.100 1.00 1 10/25/2023 00:25 WG2157232
1,2-Dichloroethane U 0.0819 1.00 1 10/25/2023 00:25 WG2157232
1,1-Dichloroethene U 0.188 1.00 1 10/25/2023 00:25 WG2157232
cis-1,2-Dichloroethene U 0.126 1.00 1 10/25/2023 00:25 WG2157232
trans-1,2-Dichloroethene U 0.149 1.00 1 10/25/2023 00:25 WG2157232
1,2-Dichloropropane U 0.149 1.00 1 10/25/2023 00:25 WG2157232
1,1-Dichloropropene U 0.142 1.00 1 10/25/2023 00:25 WG2157232
1,3-Dichloropropane U 0.110 1.00 1 10/25/2023 00:25 WG2157232
cis-1,3-Dichloropropene U 0.111 1.00 1 10/25/2023 00:25 WG2157232
trans-1,3-Dichloropropene U 0.118 1.00 1 10/25/2023 00:25 WG2157232
2,2-Dichloropropane U 0.161 1.00 1 10/25/2023 00:25 WG2157232
Di-isopropyl ether U 0.105 1.00 1 10/25/2023 00:25 WG2157232
Ethylbenzene U 0.137 1.00 1 10/25/2023 00:25 WG2157232
Hexachloro-1,3-butadiene U 0.337 1.00 1 10/25/2023 00:25 WG2157232
Isopropylbenzene U 0.105 1.00 1 10/25/2023 00:25 WG2157232
p-Isopropyltoluene U 0.120 1.00 1 10/25/2023 00:25 WG2157232
2-Butanone (MEK)U 1.19 10.0 1 10/25/2023 00:25 WG2157232
Methylene Chloride U 0.430 5.00 1 10/25/2023 00:25 WG2157232
4-Methyl-2-pentanone (MIBK)U 0.478 10.0 1 10/25/2023 00:25 WG2157232
Methyl tert-butyl ether U 0.101 1.00 1 10/25/2023 00:25 WG2157232
Naphthalene U 1.00 5.00 1 10/25/2023 00:25 WG2157232
n-Propylbenzene U 0.0993 1.00 1 10/25/2023 00:25 WG2157232
Styrene U 0.118 1.00 1 10/25/2023 00:25 WG2157232
1,1,1,2-Tetrachloroethane U 0.147 1.00 1 10/25/2023 00:25 WG2157232
1,1,2,2-Tetrachloroethane U 0.133 1.00 1 10/25/2023 00:25 WG2157232
1,1,2-Trichlorotrifluoroethane U 0.180 1.00 1 10/25/2023 00:25 WG2157232
Tetrachloroethene U 0.300 1.00 1 10/25/2023 17:24 WG2157952
Toluene U 0.278 1.00 1 10/25/2023 00:25 WG2157232
1,2,3-Trichlorobenzene U 0.230 1.00 1 10/25/2023 00:25 WG2157232
1,2,4-Trichlorobenzene U 0.481 1.00 1 10/25/2023 00:25 WG2157232
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
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ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
AECOM - Raleigh, NC 60699512 L1668457 05/20/24 14:52 13 of 29
SAMPLE RESULTS - 05
L1668457
MW-5
Collected date/time: 10/19/23 12:00
Volatile Organic Compounds (GC/MS) by Method 8260D
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
1,1,1-Trichloroethane U 0.149 1.00 1 10/25/2023 00:25 WG2157232
1,1,2-Trichloroethane U 0.158 1.00 1 10/25/2023 00:25 WG2157232
Trichloroethene U 0.190 1.00 1 10/25/2023 00:25 WG2157232
Trichlorofluoromethane U 0.160 5.00 1 10/25/2023 00:25 WG2157232
1,2,3-Trichloropropane U 0.237 2.50 1 10/25/2023 00:25 WG2157232
1,2,4-Trimethylbenzene U 0.322 1.00 1 10/25/2023 00:25 WG2157232
1,2,3-Trimethylbenzene U 0.104 1.00 1 10/25/2023 00:25 WG2157232
1,3,5-Trimethylbenzene U 0.104 1.00 1 10/25/2023 00:25 WG2157232
Vinyl chloride U 0.234 1.00 1 10/25/2023 00:25 WG2157232
Xylenes, Total U 0.174 3.00 1 10/25/2023 00:25 WG2157232
(S) Toluene-d8 103 80.0-120 10/25/2023 00:25 WG2157232
(S) Toluene-d8 110 80.0-120 10/25/2023 17:24 WG2157952
(S) 4-Bromofluorobenzene 92.6 77.0-126 10/25/2023 00:25 WG2157232
(S) 4-Bromofluorobenzene 112 77.0-126 10/25/2023 17:24 WG2157952
(S) 1,2-Dichloroethane-d4 104 70.0-130 10/25/2023 00:25 WG2157232
(S) 1,2-Dichloroethane-d4 110 70.0-130 10/25/2023 17:24 WG2157952
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
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ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
AECOM - Raleigh, NC 60699512 L1668457 05/20/24 14:52 14 of 29
QUALITY CONTROL SUMMARYWG2156922
Volatile Organic Compounds (GC/MS) by Method 8260D L1668457-01,02,03
Method Blank (MB)
(MB) R3992127-3 10/26/23 10:14
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
cis-1,3-Dichloropropene U 0.111 1.00
trans-1,3-Dichloropropene U 0.118 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
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
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ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
AECOM - Raleigh, NC 60699512 L1668457 05/20/24 14:52 15 of 29
QUALITY CONTROL SUMMARYWG2156922
Volatile Organic Compounds (GC/MS) by Method 8260D L1668457-01,02,03
Method Blank (MB)
(MB) R3992127-3 10/26/23 10:14
MB Result MB Qualifier MB MDL MB RDL
Analyte ug/l ug/l ug/l
Isopropylbenzene U 0.105 1.00
p-Isopropyltoluene U 0.120 1.00
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
1,1,2-Trichlorotrifluoroethane U 0.180 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
1,2,3-Trimethylbenzene U 0.104 1.00
1,3,5-Trimethylbenzene U 0.104 1.00
Vinyl chloride U 0.234 1.00
Xylenes, Total U 0.174 3.00
(S) Toluene-d8 104 80.0-120
(S) 4-Bromofluorobenzene 93.9 77.0-126
(S) 1,2-Dichloroethane-d4 108 70.0-130
Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD)
(LCS) R3992127-1 10/26/23 07:48 • (LCSD) R3992127-2 10/26/23 08:10
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 27.1 28.9 108 116 19.0-160 6.43 27
Acrolein 25.0 21.0 22.3 84.0 89.2 10.0-160 6.00 26
Acrylonitrile 25.0 21.8 23.2 87.2 92.8 55.0-149 6.22 20
Benzene 5.00 5.00 5.32 100 106 70.0-123 6.20 20
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
AECOM - Raleigh, NC 60699512 L1668457 05/17/24 15:37 16 of 29
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
AECOM - Raleigh, NC 60699512 L1668457 05/20/24 14:52 16 of 29
QUALITY CONTROL SUMMARYWG2156922
Volatile Organic Compounds (GC/MS) by Method 8260D L1668457-01,02,03
Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD)
(LCS) R3992127-1 10/26/23 07:48 • (LCSD) R3992127-2 10/26/23 08:10
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 %%%%%
Bromobenzene 5.00 5.32 5.62 106 112 73.0-121 5.48 20
Bromodichloromethane 5.00 5.12 5.60 102 112 75.0-120 8.96 20
Bromoform 5.00 4.39 4.38 87.8 87.6 68.0-132 0.228 20
Bromomethane 5.00 5.20 5.73 104 115 10.0-160 9.70 25
n-Butylbenzene 5.00 4.06 4.59 81.2 91.8 73.0-125 12.3 20
sec-Butylbenzene 5.00 4.58 5.13 91.6 103 75.0-125 11.3 20
tert-Butylbenzene 5.00 4.93 5.39 98.6 108 76.0-124 8.91 20
Carbon tetrachloride 5.00 4.83 5.28 96.6 106 68.0-126 8.90 20
Chlorobenzene 5.00 4.63 4.93 92.6 98.6 80.0-121 6.28 20
Chlorodibromomethane 5.00 5.07 5.47 101 109 77.0-125 7.59 20
Chloroethane 5.00 5.19 5.67 104 113 47.0-150 8.84 20
Chloroform 5.00 5.12 5.38 102 108 73.0-120 4.95 20
Chloromethane 5.00 5.75 6.29 115 126 41.0-142 8.97 20
2-Chlorotoluene 5.00 5.29 5.59 106 112 76.0-123 5.51 20
4-Chlorotoluene 5.00 5.22 5.65 104 113 75.0-122 7.91 20
1,2-Dibromo-3-Chloropropane 5.00 3.87 4.44 77.4 88.8 58.0-134 13.7 20
1,2-Dibromoethane 5.00 4.62 4.94 92.4 98.8 80.0-122 6.69 20
Dibromomethane 5.00 5.23 5.49 105 110 80.0-120 4.85 20
1,2-Dichlorobenzene 5.00 4.87 5.23 97.4 105 79.0-121 7.13 20
1,3-Dichlorobenzene 5.00 4.96 5.38 99.2 108 79.0-120 8.12 20
1,4-Dichlorobenzene 5.00 5.13 5.37 103 107 79.0-120 4.57 20
Dichlorodifluoromethane 5.00 6.03 6.60 121 132 51.0-149 9.03 20
1,1-Dichloroethane 5.00 4.74 4.93 94.8 98.6 70.0-126 3.93 20
1,2-Dichloroethane 5.00 5.15 5.24 103 105 70.0-128 1.73 20
1,1-Dichloroethene 5.00 5.10 5.50 102 110 71.0-124 7.55 20
cis-1,2-Dichloroethene 5.00 5.04 5.12 101 102 73.0-120 1.57 20
trans-1,2-Dichloroethene 5.00 5.05 5.24 101 105 73.0-120 3.69 20
1,2-Dichloropropane 5.00 4.84 5.03 96.8 101 77.0-125 3.85 20
1,1-Dichloropropene 5.00 5.15 5.59 103 112 74.0-126 8.19 20
1,3-Dichloropropane 5.00 5.10 5.21 102 104 80.0-120 2.13 20
cis-1,3-Dichloropropene 5.00 4.91 5.11 98.2 102 80.0-123 3.99 20
trans-1,3-Dichloropropene 5.00 4.76 4.97 95.2 99.4 78.0-124 4.32 20
2,2-Dichloropropane 5.00 3.82 3.92 76.4 78.4 58.0-130 2.58 20
Di-isopropyl ether 5.00 4.39 4.63 87.8 92.6 58.0-138 5.32 20
Ethylbenzene 5.00 4.66 4.87 93.2 97.4 79.0-123 4.41 20
Hexachloro-1,3-butadiene 5.00 3.79 4.55 75.8 91.0 54.0-138 18.2 20
Isopropylbenzene 5.00 4.45 4.83 89.0 96.6 76.0-127 8.19 20
p-Isopropyltoluene 5.00 4.58 5.22 91.6 104 76.0-125 13.1 20
2-Butanone (MEK)25.0 22.2 23.9 88.8 95.6 44.0-160 7.38 20
Methylene Chloride 5.00 4.88 5.27 97.6 105 67.0-120 7.68 20
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
AECOM - Raleigh, NC 60699512 L1668457 05/17/24 15:37 17 of 29
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
AECOM - Raleigh, NC 60699512 L1668457 05/20/24 14:52 17 of 29
QUALITY CONTROL SUMMARYWG2156922
Volatile Organic Compounds (GC/MS) by Method 8260D L1668457-01,02,03
Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD)
(LCS) R3992127-1 10/26/23 07:48 • (LCSD) R3992127-2 10/26/23 08:10
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 %%%%%
4-Methyl-2-pentanone (MIBK)25.0 21.3 22.8 85.2 91.2 68.0-142 6.80 20
Methyl tert-butyl ether 5.00 4.60 4.81 92.0 96.2 68.0-125 4.46 20
Naphthalene 5.00 4.29 4.86 85.8 97.2 54.0-135 12.5 20
n-Propylbenzene 5.00 5.24 5.71 105 114 77.0-124 8.58 20
Styrene 5.00 4.23 4.48 84.6 89.6 73.0-130 5.74 20
1,1,1,2-Tetrachloroethane 5.00 4.46 4.86 89.2 97.2 75.0-125 8.58 20
1,1,2,2-Tetrachloroethane 5.00 5.24 5.39 105 108 65.0-130 2.82 20
1,1,2-Trichlorotrifluoroethane 5.00 4.70 4.81 94.0 96.2 69.0-132 2.31 20
Tetrachloroethene 5.00 4.70 4.92 94.0 98.4 72.0-132 4.57 20
Toluene 5.00 4.99 5.16 99.8 103 79.0-120 3.35 20
1,2,3-Trichlorobenzene 5.00 4.20 4.59 84.0 91.8 50.0-138 8.87 20
1,2,4-Trichlorobenzene 5.00 3.92 4.44 78.4 88.8 57.0-137 12.4 20
1,1,1-Trichloroethane 5.00 5.42 5.75 108 115 73.0-124 5.91 20
1,1,2-Trichloroethane 5.00 5.06 5.23 101 105 80.0-120 3.30 20
Trichloroethene 5.00 5.02 5.45 100 109 78.0-124 8.21 20
Trichlorofluoromethane 5.00 6.01 6.25 120 125 59.0-147 3.92 20
1,2,3-Trichloropropane 5.00 5.53 5.75 111 115 73.0-130 3.90 20
1,2,4-Trimethylbenzene 5.00 4.82 5.25 96.4 105 76.0-121 8.54 20
1,2,3-Trimethylbenzene 5.00 4.91 5.24 98.2 105 77.0-120 6.50 20
1,3,5-Trimethylbenzene 5.00 4.96 5.33 99.2 107 76.0-122 7.19 20
Vinyl chloride 5.00 5.23 5.83 105 117 67.0-131 10.8 20
Xylenes, Total 15.0 13.6 14.3 90.7 95.3 79.0-123 5.02 20
(S) Toluene-d8 102 103 80.0-120
(S) 4-Bromofluorobenzene 94.2 94.9 77.0-126
(S) 1,2-Dichloroethane-d4 107 106 70.0-130
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
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QUALITY CONTROL SUMMARYWG2157232
Volatile Organic Compounds (GC/MS) by Method 8260D L1668457-04,05
Method Blank (MB)
(MB) R3990977-2 10/24/23 16:35
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
cis-1,3-Dichloropropene U 0.111 1.00
trans-1,3-Dichloropropene U 0.118 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
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
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QUALITY CONTROL SUMMARYWG2157232
Volatile Organic Compounds (GC/MS) by Method 8260D L1668457-04,05
Method Blank (MB)
(MB) R3990977-2 10/24/23 16:35
MB Result MB Qualifier MB MDL MB RDL
Analyte ug/l ug/l ug/l
Isopropylbenzene U 0.105 1.00
p-Isopropyltoluene U 0.120 1.00
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
1,1,2-Trichlorotrifluoroethane U 0.180 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
1,2,3-Trimethylbenzene U 0.104 1.00
1,3,5-Trimethylbenzene U 0.104 1.00
Vinyl chloride U 0.234 1.00
Xylenes, Total U 0.174 3.00
(S) Toluene-d8 104 80.0-120
(S) 4-Bromofluorobenzene 94.8 77.0-126
(S) 1,2-Dichloroethane-d4 106 70.0-130
Laboratory Control Sample (LCS)
(LCS) R3990977-1 10/24/23 15:29
Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier
Analyte ug/l ug/l %%
Acetone 25.0 34.5 138 19.0-160
Acrolein 25.0 28.8 115 10.0-160
Acrylonitrile 25.0 24.2 96.8 55.0-149
Benzene 5.00 5.53 111 70.0-123
Bromobenzene 5.00 5.64 113 73.0-121
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
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QUALITY CONTROL SUMMARYWG2157232
Volatile Organic Compounds (GC/MS) by Method 8260D L1668457-04,05
Laboratory Control Sample (LCS)
(LCS) R3990977-1 10/24/23 15:29
Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier
Analyte ug/l ug/l %%
Bromodichloromethane 5.00 5.70 114 75.0-120
Bromoform 5.00 4.58 91.6 68.0-132
Bromomethane 5.00 6.06 121 10.0-160
n-Butylbenzene 5.00 5.02 100 73.0-125
sec-Butylbenzene 5.00 5.36 107 75.0-125
tert-Butylbenzene 5.00 5.51 110 76.0-124
Carbon tetrachloride 5.00 5.24 105 68.0-126
Chlorobenzene 5.00 5.15 103 80.0-121
Chlorodibromomethane 5.00 5.61 112 77.0-125
Chloroethane 5.00 5.87 117 47.0-150
Chloroform 5.00 5.38 108 73.0-120
Chloromethane 5.00 6.43 129 41.0-142
2-Chlorotoluene 5.00 5.72 114 76.0-123
4-Chlorotoluene 5.00 5.70 114 75.0-122
1,2-Dibromo-3-Chloropropane 5.00 4.36 87.2 58.0-134
1,2-Dibromoethane 5.00 5.12 102 80.0-122
Dibromomethane 5.00 5.48 110 80.0-120
1,2-Dichlorobenzene 5.00 5.18 104 79.0-121
1,3-Dichlorobenzene 5.00 5.48 110 79.0-120
1,4-Dichlorobenzene 5.00 5.58 112 79.0-120
Dichlorodifluoromethane 5.00 6.78 136 51.0-149
1,1-Dichloroethane 5.00 5.06 101 70.0-126
1,2-Dichloroethane 5.00 5.47 109 70.0-128
1,1-Dichloroethene 5.00 5.60 112 71.0-124
cis-1,2-Dichloroethene 5.00 5.34 107 73.0-120
trans-1,2-Dichloroethene 5.00 5.54 111 73.0-120
1,2-Dichloropropane 5.00 5.20 104 77.0-125
1,1-Dichloropropene 5.00 5.71 114 74.0-126
1,3-Dichloropropane 5.00 5.38 108 80.0-120
cis-1,3-Dichloropropene 5.00 5.50 110 80.0-123
trans-1,3-Dichloropropene 5.00 5.24 105 78.0-124
2,2-Dichloropropane 5.00 4.37 87.4 58.0-130
Di-isopropyl ether 5.00 4.64 92.8 58.0-138
Ethylbenzene 5.00 5.14 103 79.0-123
Hexachloro-1,3-butadiene 5.00 4.87 97.4 54.0-138
Isopropylbenzene 5.00 4.99 99.8 76.0-127
p-Isopropyltoluene 5.00 5.26 105 76.0-125
2-Butanone (MEK)25.0 26.2 105 44.0-160
Methylene Chloride 5.00 5.27 105 67.0-120
4-Methyl-2-pentanone (MIBK)25.0 23.2 92.8 68.0-142
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
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QUALITY CONTROL SUMMARYWG2157232
Volatile Organic Compounds (GC/MS) by Method 8260D L1668457-04,05
Laboratory Control Sample (LCS)
(LCS) R3990977-1 10/24/23 15:29
Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier
Analyte ug/l ug/l %%
Methyl tert-butyl ether 5.00 4.88 97.6 68.0-125
Naphthalene 5.00 4.79 95.8 54.0-135
n-Propylbenzene 5.00 5.85 117 77.0-124
Styrene 5.00 4.57 91.4 73.0-130
1,1,1,2-Tetrachloroethane 5.00 4.84 96.8 75.0-125
1,1,2,2-Tetrachloroethane 5.00 5.83 117 65.0-130
1,1,2-Trichlorotrifluoroethane 5.00 5.18 104 69.0-132
Toluene 5.00 5.38 108 79.0-120
1,2,3-Trichlorobenzene 5.00 4.57 91.4 50.0-138
1,2,4-Trichlorobenzene 5.00 4.53 90.6 57.0-137
1,1,1-Trichloroethane 5.00 5.73 115 73.0-124
1,1,2-Trichloroethane 5.00 5.25 105 80.0-120
Trichloroethene 5.00 5.43 109 78.0-124
Trichlorofluoromethane 5.00 6.37 127 59.0-147
1,2,3-Trichloropropane 5.00 5.84 117 73.0-130
1,2,4-Trimethylbenzene 5.00 5.35 107 76.0-121
1,2,3-Trimethylbenzene 5.00 5.26 105 77.0-120
1,3,5-Trimethylbenzene 5.00 5.47 109 76.0-122
Vinyl chloride 5.00 5.99 120 67.0-131
Xylenes, Total 15.0 14.7 98.0 79.0-123
(S) Toluene-d8 102 80.0-120
(S) 4-Bromofluorobenzene 96.3 77.0-126
(S) 1,2-Dichloroethane-d4 108 70.0-130
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
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QUALITY CONTROL SUMMARYWG2157952
Volatile Organic Compounds (GC/MS) by Method 8260D L1668457-04,05
Method Blank (MB)
(MB) R3991429-3 10/25/23 15:44
MB Result MB Qualifier MB MDL MB RDL
Analyte ug/l ug/l ug/l
Tetrachloroethene U 0.300 1.00
(S) Toluene-d8 105 80.0-120
(S) 4-Bromofluorobenzene 110 77.0-126
(S) 1,2-Dichloroethane-d4 107 70.0-130
Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD)
(LCS) R3991429-1 10/25/23 14:40 • (LCSD) R3991429-2 10/25/23 15:01
Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits
Analyte ug/l ug/l ug/l %%%%%
Tetrachloroethene 5.00 5.45 5.15 109 103 72.0-132 5.66 20
(S) Toluene-d8 105 104 80.0-120
(S) 4-Bromofluorobenzene 109 108 77.0-126
(S) 1,2-Dichloroethane-d4 109 108 70.0-130
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
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GLOSSARY OF TERMS
Guide to Reading and Understanding Your Laboratory Report
The information below is designed to better explain the various terms used in your report of analytical results from the Laboratory. This is not
intended as a comprehensive explanation, and if you have additional questions please contact your project representative.
Results Disclaimer - Information that may be provided by the customer, and contained within this report, include Permit Limits, Project Name, Sample ID, Sample Matrix, Sample Preservation, Field Blanks, Field Spikes, Field Duplicates, On-Site Data, Sampling Collection Dates/Times, and Sampling Location. Results relate to the accuracy of this information provided, and as the samples are received.
Abbreviations and Definitions
MDL Method Detection Limit.
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
C3 The reported concentration is an estimate. The continuing calibration standard associated with this data responded low.
Method sensitivity check is acceptable.
J The identification of the analyte is acceptable; the reported value is an estimate.
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
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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
5Sr
6Qc
7Gl
8Al
9Sc
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1
Chris McCord
From:Hempel, Stephanie <[e-mail]>
Sent:Friday, May 17, 2024 10:55 AM
To:Chris McCord
Cc:MacWilliams, Robert
Subject:RE: Pace Analytical National Level II Report for 60699512 Barrett's Cleaners DC510004
L1668457
CAUTION: This email originated from outside Pace Analytical. Do not click links or open attachments unless you
recognize the sender and know the content is safe.
Unfortunately due to a field note error we don’t actually know… So I guess just leave it as is there. Thanks for checking!
Stephanie Hempel, PG
Geologist III, Geosciences Department
M [phone]
[e-mail]
Click here to connect with me on LinkedIn
AECOM
5438 Wade Park Boulevard, Suite 200
Raleigh, NC 27607
T [phone]
aecom.com
Delivering a better world
LinkedIn | Twitter | Facebook | Instagram
From: Chris McCord <[e-mail]>
Sent: Friday, May 17, 2024 11:45 AM
To: Hempel, Stephanie <[e-mail]>
Cc: MacWilliams, Robert <[e-mail]>
Subject: RE: Pace Analytical National Level II Report for 60699512 Barrett's Cleaners DC510004 L1668457
Stephanie, I will update this report. Was MW-4 still collected at 1235? Thanks. Christopher McCord Project Manager 2 | National 12065 Lebanon Road | Mt. Juliet, TN 37122 Office: 615. 773. 3281 | pacenational. com chris. mccord@ pacelabs. com MAKE
Stephanie,
I will update this report. Was MW-4 still collected at 1235?
Thanks.
Christopher McCord
Project Manager 2 | National
12065 Lebanon Road | Mt. Juliet, TN 37122
Office: 615.773.3281 | pacenafional.com
[e-mail]
2
MAKE YOUR PAYMENTS ONLINE
From: Hempel, Stephanie <[e-mail]>
Sent: Monday, May 13, 2024 10:48 AM
To: Chris McCord <[e-mail]>
Cc: MacWilliams, Robert <[e-mail]>
Subject: RE: Pace Analytical National Level II Report for 60699512 Barrett's Cleaners DC510004 L1668457
CAUTION: This email originated from outside Pace Analytical. Do not click links or open attachments unless
you recognize the sender and know the content is safe.
Hi Chris,
Good morning! I hope you had a wonderful weekend.
Regarding the subject lab report (L1668457), we are confident that our field team inadvertently switched the ‘MW-2’
and ‘MW-4’ samples, based on a review of the field notes and historic and more recent concentrations in both wells. As
such, I’m reaching out to see if you can help me get the lab report revised with the correct well name for each sample
(i.e., just exchange MW-2 and MW-4). Please let me know if you have any questions or if you need any other
information, and thanks for your help!
Stephanie Hempel, PG
Geologist, Geosciences Department
M [phone]
[e-mail]
Click here to connect with me on LinkedIn
AECOM
5438 Wade Park Boulevard, Suite 200
Raleigh, NC 27607
T [phone]
aecom.com
Delivering a better world
LinkedIn | Twitter | Facebook | Instagram
From:[e-mail] <[e-mail]>
Sent: Friday, October 27, 2023 7:52 PM
To: Hempel, Stephanie <[e-mail]>
Subject: Pace Analytical National Level II Report for 60699512 Barrett's Cleaners DC510004 L1668457
Importance: High
"Privileged and Confidential" Thank you for choosing Pace National! Please find enclosed PDF report containing your laboratory analysis and chain of custody. Pace Analytical® is the first commercial laboratory in the US to offer testing "Privileged and Confidential"
Thank you for choosing Pace National!
3
Please find enclosed PDF report containing your laboratory analysis and chain of custody.
Pace Analytical® is the first commercial laboratory in the US to offer testing of wastewater for SARS-COV2 (the virus that
causes COVID-19).
https://www.pacelabs.com/environmental-sciences/testing-services/specialty-services/covid-19-wastewater-
testing.html
Pace National is leading the laboratory industry with our On-line Data Management tools. Please contact your Project
Manager to learn how to create historical Excel tables or access data in real time using powerful and intuitive software
that is only available at https://www.pacenational.com.
Pace National ... "Your Lab of Choice"
Chris McCord
Project Manager
615-773-3281
[e-mail]
Pace Analytical National
12065 Lebanon Rd
Mount Juliet, TN 37122
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ANALYTICAL REPORT
January 29, 2024
AECOM - Raleigh, NC
Sample Delivery Group:L1697605
Samples Received:01/20/2024
Project Number:60699512
Description:Barrett's Cleaners DC510004
Site:DC510004
Report To:Stephanie Hempel
5438 Wade Park Blvd.
Suite 200
Raleigh, NC 27607
Entire Report Reviewed By:
January 29, 2024
[Preliminary Report]
Chris McCord
Project Manager
Results relate only to the items tested or calibrated and are reported as rounded values. This test report shall not be
reproduced, except in full, without written approval of the laboratory. Where applicable, sampling conducted by Pace
Analytical National is performed per guidance provided in laboratory standard operating procedures ENV-SOP-MTJL-0067 and
ENV-SOP-MTJL-0068. Where sampling conducted by the customer, results relate to the accuracy of the information provided,
and as the samples are received.
Pace Analytical National
12065 Lebanon Rd Mount Juliet, TN 37122 615-758-5858 800-767-5859 www.pacenational.com
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
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January 29, 2024
Chris McCord
Project Manager
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TABLE OF CONTENTS
Cp: Cover Page 1
Tc: Table of Contents 2
Ss: Sample Summary 3
Cn: Case Narrative 4
Sr: Sample Results 5
MW-1 L1697605-01 5
MW-2 L1697605-02 7
MW-3 L1697605-03 9
MW-4 L1697605-04 11
MW-5 L1697605-05 13
Qc: Quality Control Summary 15
Volatile Organic Compounds (GC/MS) by Method 8260D 15
Gl: Glossary of Terms 26
Al: Accreditations & Locations 27
Sc: Sample Chain of Custody 28
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
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SAMPLE SUMMARY
Collected by Collected date/time Received date/time
MW-1 L1697605-01 GW Jaiden Garden 01/19/24 12:27 01/20/24 13:00
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (GC/MS) by Method 8260D WG2211437 1 01/23/24 17:24 01/23/24 17:24 JCP Mt. Juliet, TN
Volatile Organic Compounds (GC/MS) by Method 8260D WG2212309 1 01/24/24 21:50 01/24/24 21:50 JCP Mt. Juliet, TN
Volatile Organic Compounds (GC/MS) by Method 8260D WG2213245 1 01/25/24 13:59 01/25/24 13:59 JCP Mt. Juliet, TN
Collected by Collected date/time Received date/time
MW-2 L1697605-02 GW Jaiden Garden 01/19/24 12:57 01/20/24 13:00
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (GC/MS) by Method 8260D WG2211437 1 01/23/24 17:45 01/23/24 17:45 JCP Mt. Juliet, TN
Volatile Organic Compounds (GC/MS) by Method 8260D WG2212309 1 01/24/24 22:12 01/24/24 22:12 JCP Mt. Juliet, TN
Volatile Organic Compounds (GC/MS) by Method 8260D WG2213245 50 01/25/24 15:15 01/25/24 15:15 JCP Mt. Juliet, TN
Collected by Collected date/time Received date/time
MW-3 L1697605-03 GW Jaiden Garden 01/19/24 11:45 01/20/24 13:00
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (GC/MS) by Method 8260D WG2211437 1 01/23/24 18:07 01/23/24 18:07 JCP Mt. Juliet, TN
Volatile Organic Compounds (GC/MS) by Method 8260D WG2212309 1 01/24/24 22:33 01/24/24 22:33 JCP Mt. Juliet, TN
Volatile Organic Compounds (GC/MS) by Method 8260D WG2213245 1 01/25/24 14:18 01/25/24 14:18 JCP Mt. Juliet, TN
Collected by Collected date/time Received date/time
MW-4 L1697605-04 GW Jaiden Garden 01/19/24 14:00 01/20/24 13:00
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (GC/MS) by Method 8260D WG2212309 1 01/24/24 22:54 01/24/24 22:54 JCP Mt. Juliet, TN
Volatile Organic Compounds (GC/MS) by Method 8260D WG2213245 1 01/25/24 14:37 01/25/24 14:37 JCP Mt. Juliet, TN
Collected by Collected date/time Received date/time
MW-5 L1697605-05 GW Jaiden Garden 01/19/24 13:30 01/20/24 13:00
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (GC/MS) by Method 8260D WG2211437 1 01/23/24 18:29 01/23/24 18:29 JCP Mt. Juliet, TN
Volatile Organic Compounds (GC/MS) by Method 8260D WG2212309 1 01/24/24 23:16 01/24/24 23:16 JCP Mt. Juliet, TN
Volatile Organic Compounds (GC/MS) by Method 8260D WG2213245 1 01/25/24 14:56 01/25/24 14:56 JCP Mt. Juliet, TN
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
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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]
Chris McCord
Project Manager
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
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Chris McCord
Project Manager
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SAMPLE RESULTS - 01
L1697605
MW-1
Collected date/time: 01/19/24 12:27
Volatile Organic Compounds (GC/MS) by Method 8260D
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
Acetone U J4 11.3 25.0 1 01/23/2024 17:24 WG2211437
Acrylonitrile U 0.671 5.00 1 01/23/2024 17:24 WG2211437
Benzene U 0.0941 0.500 1 01/23/2024 17:24 WG2211437
Bromobenzene U 0.118 0.500 1 01/23/2024 17:24 WG2211437
Bromodichloromethane U 0.136 0.500 1 01/23/2024 17:24 WG2211437
Bromochloromethane U 0.128 0.500 1 01/23/2024 17:24 WG2211437
Bromoform U 0.129 0.500 1 01/23/2024 17:24 WG2211437
Bromomethane U J4 0.605 2.50 1 01/23/2024 17:24 WG2211437
n-Butylbenzene U 0.157 0.500 1 01/23/2024 17:24 WG2211437
sec-Butylbenzene U 0.125 0.500 1 01/23/2024 17:24 WG2211437
tert-Butylbenzene U 0.127 0.500 1 01/23/2024 17:24 WG2211437
Carbon disulfide U 0.0962 0.500 1 01/23/2024 17:24 WG2211437
Carbon tetrachloride U 0.128 0.500 1 01/23/2024 17:24 WG2211437
Chlorobenzene U 0.117 0.500 1 01/23/2024 17:24 WG2211437
Chlorodibromomethane U 0.140 0.500 1 01/23/2024 17:24 WG2211437
Chloroethane U 0.192 2.50 1 01/23/2024 17:24 WG2211437
Chloroform 0.184 J 0.111 0.500 1 01/23/2024 17:24 WG2211437
Chloromethane U 0.960 1.25 1 01/25/2024 13:59 WG2213245
2-Chlorotoluene U 0.106 0.500 1 01/23/2024 17:24 WG2211437
4-Chlorotoluene U 0.114 0.500 1 01/23/2024 17:24 WG2211437
1,2-Dibromo-3-Chloropropane U 0.276 2.50 1 01/23/2024 17:24 WG2211437
1,2-Dibromoethane U 0.126 0.500 1 01/23/2024 17:24 WG2211437
Dibromomethane U 0.122 0.500 1 01/23/2024 17:24 WG2211437
1,2-Dichlorobenzene U 0.107 0.500 1 01/23/2024 17:24 WG2211437
1,3-Dichlorobenzene U 0.299 0.500 1 01/23/2024 17:24 WG2211437
1,4-Dichlorobenzene U 0.120 0.500 1 01/23/2024 17:24 WG2211437
Dichlorodifluoromethane U 0.374 2.50 1 01/23/2024 17:24 WG2211437
1,1-Dichloroethane U 0.100 0.500 1 01/23/2024 17:24 WG2211437
1,2-Dichloroethane U 0.0819 0.500 1 01/23/2024 17:24 WG2211437
1,1-Dichloroethene U 0.188 0.500 1 01/23/2024 17:24 WG2211437
cis-1,2-Dichloroethene U 0.126 0.500 1 01/23/2024 17:24 WG2211437
trans-1,2-Dichloroethene U 0.149 0.500 1 01/23/2024 17:24 WG2211437
1,2-Dichloropropane U 0.149 0.500 1 01/23/2024 17:24 WG2211437
1,1-Dichloropropene U 0.142 0.500 1 01/23/2024 17:24 WG2211437
1,3-Dichloropropane U 0.109 1.00 1 01/23/2024 17:24 WG2211437
cis-1,3-Dichloropropene U 0.111 0.500 1 01/23/2024 17:24 WG2211437
trans-1,3-Dichloropropene U 0.118 0.500 1 01/23/2024 17:24 WG2211437
trans-1,4-Dichloro-2-butene U 0.467 5.00 1 01/24/2024 21:50 WG2212309
2,2-Dichloropropane U J4 0.161 0.500 1 01/23/2024 17:24 WG2211437
Di-isopropyl ether U 0.105 0.500 1 01/23/2024 17:24 WG2211437
Ethylbenzene U 0.137 0.500 1 01/23/2024 17:24 WG2211437
Hexachloro-1,3-butadiene U 0.337 1.00 1 01/23/2024 17:24 WG2211437
2-Hexanone U 0.787 5.00 1 01/23/2024 17:24 WG2211437
n-Hexane U 0.749 5.00 1 01/23/2024 17:24 WG2211437
Iodomethane U 0.554 5.00 1 01/23/2024 17:24 WG2211437
Isopropylbenzene U 0.105 0.500 1 01/23/2024 17:24 WG2211437
p-Isopropyltoluene U 0.120 0.500 1 01/23/2024 17:24 WG2211437
2-Butanone (MEK)U 1.19 5.00 1 01/23/2024 17:24 WG2211437
Methylene Chloride U 0.430 2.50 1 01/23/2024 17:24 WG2211437
4-Methyl-2-pentanone (MIBK)U 0.478 5.00 1 01/23/2024 17:24 WG2211437
Methyl tert-butyl ether U 0.101 0.500 1 01/23/2024 17:24 WG2211437
Naphthalene U C3 0.174 2.50 1 01/23/2024 17:24 WG2211437
n-Propylbenzene U 0.0993 0.500 1 01/23/2024 17:24 WG2211437
Styrene U 0.118 0.500 1 01/23/2024 17:24 WG2211437
1,1,1,2-Tetrachloroethane U 0.147 0.500 1 01/23/2024 17:24 WG2211437
1,1,2,2-Tetrachloroethane U 0.133 0.500 1 01/23/2024 17:24 WG2211437
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
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SAMPLE RESULTS - 01
L1697605
MW-1
Collected date/time: 01/19/24 12:27
Volatile Organic Compounds (GC/MS) by Method 8260D
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
1,1,2-Trichlorotrifluoroethane U 0.180 0.500 1 01/23/2024 17:24 WG2211437
Tetrachloroethene 4.96 0.300 0.500 1 01/23/2024 17:24 WG2211437
Toluene U 0.278 0.500 1 01/23/2024 17:24 WG2211437
1,2,3-Trichlorobenzene U 0.164 0.500 1 01/23/2024 17:24 WG2211437
1,2,4-Trichlorobenzene U 0.481 1.00 1 01/23/2024 17:24 WG2211437
1,1,1-Trichloroethane U 0.149 0.500 1 01/23/2024 17:24 WG2211437
1,1,2-Trichloroethane U 0.158 0.500 1 01/23/2024 17:24 WG2211437
Trichloroethene U 0.190 0.500 1 01/23/2024 17:24 WG2211437
Trichlorofluoromethane U 0.160 2.50 1 01/23/2024 17:24 WG2211437
1,2,3-Trichloropropane U 0.237 2.50 1 01/23/2024 17:24 WG2211437
1,2,4-Trimethylbenzene U 0.322 0.500 1 01/23/2024 17:24 WG2211437
1,2,3-Trimethylbenzene U 0.104 0.500 1 01/23/2024 17:24 WG2211437
1,3,5-Trimethylbenzene U 0.104 0.500 1 01/23/2024 17:24 WG2211437
Vinyl acetate U 0.692 5.00 1 01/23/2024 17:24 WG2211437
Vinyl chloride U 0.234 0.500 1 01/23/2024 17:24 WG2211437
Xylenes, Total U 0.174 1.50 1 01/23/2024 17:24 WG2211437
(S) Toluene-d8 103 80.0-120 01/23/2024 17:24 WG2211437
(S) Toluene-d8 119 80.0-120 01/24/2024 21:50 WG2212309
(S) Toluene-d8 99.7 80.0-120 01/25/2024 13:59 WG2213245
(S) 4-Bromofluorobenzene 88.0 77.0-126 01/23/2024 17:24 WG2211437
(S) 4-Bromofluorobenzene 105 77.0-126 01/24/2024 21:50 WG2212309
(S) 4-Bromofluorobenzene 98.2 77.0-126 01/25/2024 13:59 WG2213245
(S) 1,2-Dichloroethane-d4 101 70.0-130 01/23/2024 17:24 WG2211437
(S) 1,2-Dichloroethane-d4 108 70.0-130 01/24/2024 21:50 WG2212309
(S) 1,2-Dichloroethane-d4 103 70.0-130 01/25/2024 13:59 WG2213245
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
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SAMPLE RESULTS - 02
L1697605
MW-2
Collected date/time: 01/19/24 12:57
Volatile Organic Compounds (GC/MS) by Method 8260D
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
Acetone U J4 11.3 25.0 1 01/23/2024 17:45 WG2211437
Acrylonitrile U 0.671 5.00 1 01/23/2024 17:45 WG2211437
Benzene U 0.0941 0.500 1 01/23/2024 17:45 WG2211437
Bromobenzene U 0.118 0.500 1 01/23/2024 17:45 WG2211437
Bromodichloromethane 0.245 J 0.136 0.500 1 01/23/2024 17:45 WG2211437
Bromochloromethane U 0.128 0.500 1 01/23/2024 17:45 WG2211437
Bromoform U 0.129 0.500 1 01/23/2024 17:45 WG2211437
Bromomethane U J4 0.605 2.50 1 01/23/2024 17:45 WG2211437
n-Butylbenzene U 0.157 0.500 1 01/23/2024 17:45 WG2211437
sec-Butylbenzene U 0.125 0.500 1 01/23/2024 17:45 WG2211437
tert-Butylbenzene U 0.127 0.500 1 01/23/2024 17:45 WG2211437
Carbon disulfide U 0.0962 0.500 1 01/23/2024 17:45 WG2211437
Carbon tetrachloride U 0.128 0.500 1 01/23/2024 17:45 WG2211437
Chlorobenzene U 0.117 0.500 1 01/23/2024 17:45 WG2211437
Chlorodibromomethane U 0.140 0.500 1 01/23/2024 17:45 WG2211437
Chloroethane U 0.192 2.50 1 01/23/2024 17:45 WG2211437
Chloroform 2.31 0.111 0.500 1 01/23/2024 17:45 WG2211437
Chloromethane U 48.0 62.5 50 01/25/2024 15:15 WG2213245
2-Chlorotoluene U 0.106 0.500 1 01/23/2024 17:45 WG2211437
4-Chlorotoluene U 0.114 0.500 1 01/23/2024 17:45 WG2211437
1,2-Dibromo-3-Chloropropane U 0.276 2.50 1 01/23/2024 17:45 WG2211437
1,2-Dibromoethane U 0.126 0.500 1 01/23/2024 17:45 WG2211437
Dibromomethane U 0.122 0.500 1 01/23/2024 17:45 WG2211437
1,2-Dichlorobenzene U 0.107 0.500 1 01/23/2024 17:45 WG2211437
1,3-Dichlorobenzene U 0.299 0.500 1 01/23/2024 17:45 WG2211437
1,4-Dichlorobenzene U 0.120 0.500 1 01/23/2024 17:45 WG2211437
Dichlorodifluoromethane U 0.374 2.50 1 01/23/2024 17:45 WG2211437
1,1-Dichloroethane U 0.100 0.500 1 01/23/2024 17:45 WG2211437
1,2-Dichloroethane U 0.0819 0.500 1 01/23/2024 17:45 WG2211437
1,1-Dichloroethene U 0.188 0.500 1 01/23/2024 17:45 WG2211437
cis-1,2-Dichloroethene 7.80 0.126 0.500 1 01/23/2024 17:45 WG2211437
trans-1,2-Dichloroethene U 0.149 0.500 1 01/23/2024 17:45 WG2211437
1,2-Dichloropropane U 0.149 0.500 1 01/23/2024 17:45 WG2211437
1,1-Dichloropropene U 0.142 0.500 1 01/23/2024 17:45 WG2211437
1,3-Dichloropropane U 0.109 1.00 1 01/23/2024 17:45 WG2211437
cis-1,3-Dichloropropene U 0.111 0.500 1 01/23/2024 17:45 WG2211437
trans-1,3-Dichloropropene U 0.118 0.500 1 01/23/2024 17:45 WG2211437
trans-1,4-Dichloro-2-butene 1.94 J 0.467 5.00 1 01/24/2024 22:12 WG2212309
2,2-Dichloropropane U J4 0.161 0.500 1 01/23/2024 17:45 WG2211437
Di-isopropyl ether U 0.105 0.500 1 01/23/2024 17:45 WG2211437
Ethylbenzene U 0.137 0.500 1 01/23/2024 17:45 WG2211437
Hexachloro-1,3-butadiene U 0.337 1.00 1 01/23/2024 17:45 WG2211437
2-Hexanone U 0.787 5.00 1 01/23/2024 17:45 WG2211437
n-Hexane U 0.749 5.00 1 01/23/2024 17:45 WG2211437
Iodomethane U 0.554 5.00 1 01/23/2024 17:45 WG2211437
Isopropylbenzene U 0.105 0.500 1 01/23/2024 17:45 WG2211437
p-Isopropyltoluene U 0.120 0.500 1 01/23/2024 17:45 WG2211437
2-Butanone (MEK)U 1.19 5.00 1 01/23/2024 17:45 WG2211437
Methylene Chloride U 0.430 2.50 1 01/23/2024 17:45 WG2211437
4-Methyl-2-pentanone (MIBK)U 0.478 5.00 1 01/23/2024 17:45 WG2211437
Methyl tert-butyl ether U 0.101 0.500 1 01/23/2024 17:45 WG2211437
Naphthalene U C3 0.174 2.50 1 01/23/2024 17:45 WG2211437
n-Propylbenzene U 0.0993 0.500 1 01/23/2024 17:45 WG2211437
Styrene U 0.118 0.500 1 01/23/2024 17:45 WG2211437
1,1,1,2-Tetrachloroethane U 0.147 0.500 1 01/23/2024 17:45 WG2211437
1,1,2,2-Tetrachloroethane U 0.133 0.500 1 01/23/2024 17:45 WG2211437
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
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ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
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SAMPLE RESULTS - 02
L1697605
MW-2
Collected date/time: 01/19/24 12:57
Volatile Organic Compounds (GC/MS) by Method 8260D
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
1,1,2-Trichlorotrifluoroethane U 0.180 0.500 1 01/23/2024 17:45 WG2211437
Tetrachloroethene 983 15.0 25.0 50 01/25/2024 15:15 WG2213245
Toluene U 0.278 0.500 1 01/23/2024 17:45 WG2211437
1,2,3-Trichlorobenzene U 0.164 0.500 1 01/23/2024 17:45 WG2211437
1,2,4-Trichlorobenzene U 0.481 1.00 1 01/23/2024 17:45 WG2211437
1,1,1-Trichloroethane U 0.149 0.500 1 01/23/2024 17:45 WG2211437
1,1,2-Trichloroethane U 0.158 0.500 1 01/23/2024 17:45 WG2211437
Trichloroethene 32.2 0.190 0.500 1 01/23/2024 17:45 WG2211437
Trichlorofluoromethane U 0.160 2.50 1 01/23/2024 17:45 WG2211437
1,2,3-Trichloropropane U 0.237 2.50 1 01/23/2024 17:45 WG2211437
1,2,4-Trimethylbenzene U 0.322 0.500 1 01/23/2024 17:45 WG2211437
1,2,3-Trimethylbenzene U 0.104 0.500 1 01/23/2024 17:45 WG2211437
1,3,5-Trimethylbenzene U 0.104 0.500 1 01/23/2024 17:45 WG2211437
Vinyl acetate U 0.692 5.00 1 01/23/2024 17:45 WG2211437
Vinyl chloride U 0.234 0.500 1 01/23/2024 17:45 WG2211437
Xylenes, Total U 0.174 1.50 1 01/23/2024 17:45 WG2211437
(S) Toluene-d8 100 80.0-120 01/23/2024 17:45 WG2211437
(S) Toluene-d8 114 80.0-120 01/24/2024 22:12 WG2212309
(S) Toluene-d8 97.4 80.0-120 01/25/2024 15:15 WG2213245
(S) 4-Bromofluorobenzene 88.7 77.0-126 01/23/2024 17:45 WG2211437
(S) 4-Bromofluorobenzene 105 77.0-126 01/24/2024 22:12 WG2212309
(S) 4-Bromofluorobenzene 100 77.0-126 01/25/2024 15:15 WG2213245
(S) 1,2-Dichloroethane-d4 99.1 70.0-130 01/23/2024 17:45 WG2211437
(S) 1,2-Dichloroethane-d4 106 70.0-130 01/24/2024 22:12 WG2212309
(S) 1,2-Dichloroethane-d4 104 70.0-130 01/25/2024 15:15 WG2213245
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
AECOM - Raleigh, NC 60699512 L1697605 01/29/24 09:49 8 of 28
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
AECOM - Raleigh, NC 60699512 L1697605 01/29/24 10:57 8 of 28
SAMPLE RESULTS - 03
L1697605
MW-3
Collected date/time: 01/19/24 11:45
Volatile Organic Compounds (GC/MS) by Method 8260D
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
Acetone U J4 11.3 25.0 1 01/23/2024 18:07 WG2211437
Acrylonitrile U 0.671 5.00 1 01/23/2024 18:07 WG2211437
Benzene U 0.0941 0.500 1 01/23/2024 18:07 WG2211437
Bromobenzene U 0.118 0.500 1 01/23/2024 18:07 WG2211437
Bromodichloromethane U 0.136 0.500 1 01/23/2024 18:07 WG2211437
Bromochloromethane U 0.128 0.500 1 01/23/2024 18:07 WG2211437
Bromoform U 0.129 0.500 1 01/23/2024 18:07 WG2211437
Bromomethane U J4 0.605 2.50 1 01/23/2024 18:07 WG2211437
n-Butylbenzene U 0.157 0.500 1 01/23/2024 18:07 WG2211437
sec-Butylbenzene U 0.125 0.500 1 01/23/2024 18:07 WG2211437
tert-Butylbenzene U 0.127 0.500 1 01/23/2024 18:07 WG2211437
Carbon disulfide U 0.0962 0.500 1 01/23/2024 18:07 WG2211437
Carbon tetrachloride U 0.128 0.500 1 01/23/2024 18:07 WG2211437
Chlorobenzene U 0.117 0.500 1 01/23/2024 18:07 WG2211437
Chlorodibromomethane U 0.140 0.500 1 01/23/2024 18:07 WG2211437
Chloroethane U 0.192 2.50 1 01/23/2024 18:07 WG2211437
Chloroform 0.180 J 0.111 0.500 1 01/23/2024 18:07 WG2211437
Chloromethane U 0.960 1.25 1 01/25/2024 14:18 WG2213245
2-Chlorotoluene U 0.106 0.500 1 01/23/2024 18:07 WG2211437
4-Chlorotoluene U 0.114 0.500 1 01/23/2024 18:07 WG2211437
1,2-Dibromo-3-Chloropropane U 0.276 2.50 1 01/23/2024 18:07 WG2211437
1,2-Dibromoethane U 0.126 0.500 1 01/23/2024 18:07 WG2211437
Dibromomethane U 0.122 0.500 1 01/23/2024 18:07 WG2211437
1,2-Dichlorobenzene U 0.107 0.500 1 01/23/2024 18:07 WG2211437
1,3-Dichlorobenzene U 0.299 0.500 1 01/23/2024 18:07 WG2211437
1,4-Dichlorobenzene U 0.120 0.500 1 01/23/2024 18:07 WG2211437
Dichlorodifluoromethane U 0.374 2.50 1 01/23/2024 18:07 WG2211437
1,1-Dichloroethane U 0.100 0.500 1 01/23/2024 18:07 WG2211437
1,2-Dichloroethane U 0.0819 0.500 1 01/23/2024 18:07 WG2211437
1,1-Dichloroethene U 0.188 0.500 1 01/23/2024 18:07 WG2211437
cis-1,2-Dichloroethene U 0.126 0.500 1 01/23/2024 18:07 WG2211437
trans-1,2-Dichloroethene U 0.149 0.500 1 01/23/2024 18:07 WG2211437
1,2-Dichloropropane U 0.149 0.500 1 01/23/2024 18:07 WG2211437
1,1-Dichloropropene U 0.142 0.500 1 01/23/2024 18:07 WG2211437
1,3-Dichloropropane U 0.109 1.00 1 01/23/2024 18:07 WG2211437
cis-1,3-Dichloropropene U 0.111 0.500 1 01/23/2024 18:07 WG2211437
trans-1,3-Dichloropropene U 0.118 0.500 1 01/23/2024 18:07 WG2211437
trans-1,4-Dichloro-2-butene U 0.467 5.00 1 01/24/2024 22:33 WG2212309
2,2-Dichloropropane U J4 0.161 0.500 1 01/23/2024 18:07 WG2211437
Di-isopropyl ether U 0.105 0.500 1 01/23/2024 18:07 WG2211437
Ethylbenzene U 0.137 0.500 1 01/23/2024 18:07 WG2211437
Hexachloro-1,3-butadiene U 0.337 1.00 1 01/23/2024 18:07 WG2211437
2-Hexanone U 0.787 5.00 1 01/23/2024 18:07 WG2211437
n-Hexane U 0.749 5.00 1 01/23/2024 18:07 WG2211437
Iodomethane U 0.554 5.00 1 01/23/2024 18:07 WG2211437
Isopropylbenzene U 0.105 0.500 1 01/23/2024 18:07 WG2211437
p-Isopropyltoluene U 0.120 0.500 1 01/23/2024 18:07 WG2211437
2-Butanone (MEK)U 1.19 5.00 1 01/23/2024 18:07 WG2211437
Methylene Chloride U 0.430 2.50 1 01/23/2024 18:07 WG2211437
4-Methyl-2-pentanone (MIBK)U 0.478 5.00 1 01/23/2024 18:07 WG2211437
Methyl tert-butyl ether U 0.101 0.500 1 01/23/2024 18:07 WG2211437
Naphthalene U C3 0.174 2.50 1 01/23/2024 18:07 WG2211437
n-Propylbenzene U 0.0993 0.500 1 01/23/2024 18:07 WG2211437
Styrene U 0.118 0.500 1 01/23/2024 18:07 WG2211437
1,1,1,2-Tetrachloroethane U 0.147 0.500 1 01/23/2024 18:07 WG2211437
1,1,2,2-Tetrachloroethane U 0.133 0.500 1 01/23/2024 18:07 WG2211437
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
AECOM - Raleigh, NC 60699512 L1697605 01/29/24 09:49 9 of 28
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
AECOM - Raleigh, NC 60699512 L1697605 01/29/24 10:57 9 of 28
SAMPLE RESULTS - 03
L1697605
MW-3
Collected date/time: 01/19/24 11:45
Volatile Organic Compounds (GC/MS) by Method 8260D
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
1,1,2-Trichlorotrifluoroethane U 0.180 0.500 1 01/23/2024 18:07 WG2211437
Tetrachloroethene 2.32 0.300 0.500 1 01/24/2024 22:33 WG2212309
Toluene U 0.278 0.500 1 01/23/2024 18:07 WG2211437
1,2,3-Trichlorobenzene U 0.164 0.500 1 01/23/2024 18:07 WG2211437
1,2,4-Trichlorobenzene U 0.481 1.00 1 01/23/2024 18:07 WG2211437
1,1,1-Trichloroethane U 0.149 0.500 1 01/23/2024 18:07 WG2211437
1,1,2-Trichloroethane U 0.158 0.500 1 01/23/2024 18:07 WG2211437
Trichloroethene U 0.190 0.500 1 01/23/2024 18:07 WG2211437
Trichlorofluoromethane U 0.160 2.50 1 01/23/2024 18:07 WG2211437
1,2,3-Trichloropropane U 0.237 2.50 1 01/23/2024 18:07 WG2211437
1,2,4-Trimethylbenzene U 0.322 0.500 1 01/23/2024 18:07 WG2211437
1,2,3-Trimethylbenzene U 0.104 0.500 1 01/23/2024 18:07 WG2211437
1,3,5-Trimethylbenzene U 0.104 0.500 1 01/23/2024 18:07 WG2211437
Vinyl acetate U 0.692 5.00 1 01/23/2024 18:07 WG2211437
Vinyl chloride U 0.234 0.500 1 01/23/2024 18:07 WG2211437
Xylenes, Total U 0.174 1.50 1 01/23/2024 18:07 WG2211437
(S) Toluene-d8 103 80.0-120 01/23/2024 18:07 WG2211437
(S) Toluene-d8 117 80.0-120 01/24/2024 22:33 WG2212309
(S) Toluene-d8 100 80.0-120 01/25/2024 14:18 WG2213245
(S) 4-Bromofluorobenzene 91.5 77.0-126 01/23/2024 18:07 WG2211437
(S) 4-Bromofluorobenzene 106 77.0-126 01/24/2024 22:33 WG2212309
(S) 4-Bromofluorobenzene 100 77.0-126 01/25/2024 14:18 WG2213245
(S) 1,2-Dichloroethane-d4 99.7 70.0-130 01/23/2024 18:07 WG2211437
(S) 1,2-Dichloroethane-d4 108 70.0-130 01/24/2024 22:33 WG2212309
(S) 1,2-Dichloroethane-d4 103 70.0-130 01/25/2024 14:18 WG2213245
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
AECOM - Raleigh, NC 60699512 L1697605 01/29/24 09:49 10 of 28
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
AECOM - Raleigh, NC 60699512 L1697605 01/29/24 10:57 10 of 28
SAMPLE RESULTS - 04
L1697605
MW-4
Collected date/time: 01/19/24 14:00
Volatile Organic Compounds (GC/MS) by Method 8260D
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
Acetone U J4 11.3 25.0 1 01/25/2024 14:37 WG2213245
Acrylonitrile U 0.671 5.00 1 01/24/2024 22:54 WG2212309
Benzene U 0.0941 0.500 1 01/24/2024 22:54 WG2212309
Bromobenzene U 0.118 0.500 1 01/25/2024 14:37 WG2213245
Bromodichloromethane U 0.136 0.500 1 01/24/2024 22:54 WG2212309
Bromochloromethane U 0.128 0.500 1 01/24/2024 22:54 WG2212309
Bromoform U 0.129 0.500 1 01/24/2024 22:54 WG2212309
Bromomethane U 0.605 2.50 1 01/24/2024 22:54 WG2212309
n-Butylbenzene U 0.157 0.500 1 01/24/2024 22:54 WG2212309
sec-Butylbenzene U 0.125 0.500 1 01/24/2024 22:54 WG2212309
tert-Butylbenzene U 0.127 0.500 1 01/24/2024 22:54 WG2212309
Carbon disulfide 0.171 B C3 J 0.0962 0.500 1 01/24/2024 22:54 WG2212309
Carbon tetrachloride U 0.128 0.500 1 01/24/2024 22:54 WG2212309
Chlorobenzene U 0.117 0.500 1 01/24/2024 22:54 WG2212309
Chlorodibromomethane U 0.140 0.500 1 01/24/2024 22:54 WG2212309
Chloroethane U 0.192 2.50 1 01/24/2024 22:54 WG2212309
Chloroform U 0.111 0.500 1 01/24/2024 22:54 WG2212309
Chloromethane U 0.960 1.25 1 01/25/2024 14:37 WG2213245
2-Chlorotoluene U 0.106 0.500 1 01/24/2024 22:54 WG2212309
4-Chlorotoluene U 0.114 0.500 1 01/25/2024 14:37 WG2213245
1,2-Dibromo-3-Chloropropane U 0.276 2.50 1 01/25/2024 14:37 WG2213245
1,2-Dibromoethane U 0.126 0.500 1 01/24/2024 22:54 WG2212309
Dibromomethane U 0.122 0.500 1 01/24/2024 22:54 WG2212309
1,2-Dichlorobenzene U 0.107 0.500 1 01/24/2024 22:54 WG2212309
1,3-Dichlorobenzene U 0.299 0.500 1 01/24/2024 22:54 WG2212309
1,4-Dichlorobenzene U 0.120 0.500 1 01/24/2024 22:54 WG2212309
Dichlorodifluoromethane U 0.374 2.50 1 01/24/2024 22:54 WG2212309
1,1-Dichloroethane U 0.100 0.500 1 01/24/2024 22:54 WG2212309
1,2-Dichloroethane U 0.0819 0.500 1 01/24/2024 22:54 WG2212309
1,1-Dichloroethene U 0.188 0.500 1 01/24/2024 22:54 WG2212309
cis-1,2-Dichloroethene U 0.126 0.500 1 01/24/2024 22:54 WG2212309
trans-1,2-Dichloroethene U 0.149 0.500 1 01/24/2024 22:54 WG2212309
1,2-Dichloropropane U 0.149 0.500 1 01/24/2024 22:54 WG2212309
1,1-Dichloropropene U 0.142 0.500 1 01/24/2024 22:54 WG2212309
1,3-Dichloropropane U 0.109 1.00 1 01/24/2024 22:54 WG2212309
cis-1,3-Dichloropropene U 0.111 0.500 1 01/24/2024 22:54 WG2212309
trans-1,3-Dichloropropene U 0.118 0.500 1 01/24/2024 22:54 WG2212309
trans-1,4-Dichloro-2-butene 1.92 J 0.467 5.00 1 01/24/2024 22:54 WG2212309
2,2-Dichloropropane U 0.161 0.500 1 01/24/2024 22:54 WG2212309
Di-isopropyl ether U 0.105 0.500 1 01/24/2024 22:54 WG2212309
Ethylbenzene U 0.137 0.500 1 01/24/2024 22:54 WG2212309
Hexachloro-1,3-butadiene U 0.337 1.00 1 01/25/2024 14:37 WG2213245
2-Hexanone U 0.787 5.00 1 01/25/2024 14:37 WG2213245
n-Hexane U 0.749 5.00 1 01/25/2024 14:37 WG2213245
Iodomethane U 0.554 5.00 1 01/24/2024 22:54 WG2212309
Isopropylbenzene U 0.105 0.500 1 01/24/2024 22:54 WG2212309
p-Isopropyltoluene U 0.120 0.500 1 01/24/2024 22:54 WG2212309
2-Butanone (MEK)U 1.19 5.00 1 01/25/2024 14:37 WG2213245
Methylene Chloride U 0.430 2.50 1 01/24/2024 22:54 WG2212309
4-Methyl-2-pentanone (MIBK)U 0.478 5.00 1 01/24/2024 22:54 WG2212309
Methyl tert-butyl ether U 0.101 0.500 1 01/24/2024 22:54 WG2212309
Naphthalene U 0.174 2.50 1 01/25/2024 14:37 WG2213245
n-Propylbenzene U 0.0993 0.500 1 01/24/2024 22:54 WG2212309
Styrene U 0.118 0.500 1 01/24/2024 22:54 WG2212309
1,1,1,2-Tetrachloroethane U 0.147 0.500 1 01/24/2024 22:54 WG2212309
1,1,2,2-Tetrachloroethane U 0.133 0.500 1 01/24/2024 22:54 WG2212309
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
AECOM - Raleigh, NC 60699512 L1697605 01/29/24 09:49 11 of 28
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
AECOM - Raleigh, NC 60699512 L1697605 01/29/24 10:57 11 of 28
SAMPLE RESULTS - 04
L1697605
MW-4
Collected date/time: 01/19/24 14:00
Volatile Organic Compounds (GC/MS) by Method 8260D
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
1,1,2-Trichlorotrifluoroethane U 0.180 0.500 1 01/24/2024 22:54 WG2212309
Tetrachloroethene U 0.300 0.500 1 01/25/2024 14:37 WG2213245
Toluene U 0.278 0.500 1 01/24/2024 22:54 WG2212309
1,2,3-Trichlorobenzene U 0.164 0.500 1 01/24/2024 22:54 WG2212309
1,2,4-Trichlorobenzene U 0.481 1.00 1 01/24/2024 22:54 WG2212309
1,1,1-Trichloroethane U 0.149 0.500 1 01/24/2024 22:54 WG2212309
1,1,2-Trichloroethane U 0.158 0.500 1 01/24/2024 22:54 WG2212309
Trichloroethene U 0.190 0.500 1 01/24/2024 22:54 WG2212309
Trichlorofluoromethane U 0.160 2.50 1 01/24/2024 22:54 WG2212309
1,2,3-Trichloropropane U 0.237 2.50 1 01/24/2024 22:54 WG2212309
1,2,4-Trimethylbenzene U 0.322 0.500 1 01/25/2024 14:37 WG2213245
1,2,3-Trimethylbenzene U 0.104 0.500 1 01/25/2024 14:37 WG2213245
1,3,5-Trimethylbenzene U 0.104 0.500 1 01/24/2024 22:54 WG2212309
Vinyl acetate U 0.692 5.00 1 01/24/2024 22:54 WG2212309
Vinyl chloride U 0.234 0.500 1 01/24/2024 22:54 WG2212309
Xylenes, Total U 0.174 1.50 1 01/24/2024 22:54 WG2212309
(S) Toluene-d8 119 80.0-120 01/24/2024 22:54 WG2212309
(S) Toluene-d8 102 80.0-120 01/25/2024 14:37 WG2213245
(S) 4-Bromofluorobenzene 105 77.0-126 01/24/2024 22:54 WG2212309
(S) 4-Bromofluorobenzene 97.8 77.0-126 01/25/2024 14:37 WG2213245
(S) 1,2-Dichloroethane-d4 106 70.0-130 01/24/2024 22:54 WG2212309
(S) 1,2-Dichloroethane-d4 106 70.0-130 01/25/2024 14:37 WG2213245
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
AECOM - Raleigh, NC 60699512 L1697605 01/29/24 09:49 12 of 28
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
AECOM - Raleigh, NC 60699512 L1697605 01/29/24 10:57 12 of 28
SAMPLE RESULTS - 05
L1697605
MW-5
Collected date/time: 01/19/24 13:30
Volatile Organic Compounds (GC/MS) by Method 8260D
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
Acetone U J4 11.3 25.0 1 01/23/2024 18:29 WG2211437
Acrylonitrile U 0.671 5.00 1 01/23/2024 18:29 WG2211437
Benzene U 0.0941 0.500 1 01/23/2024 18:29 WG2211437
Bromobenzene U 0.118 0.500 1 01/23/2024 18:29 WG2211437
Bromodichloromethane U 0.136 0.500 1 01/23/2024 18:29 WG2211437
Bromochloromethane U 0.128 0.500 1 01/23/2024 18:29 WG2211437
Bromoform U 0.129 0.500 1 01/23/2024 18:29 WG2211437
Bromomethane U J4 0.605 2.50 1 01/23/2024 18:29 WG2211437
n-Butylbenzene U 0.157 0.500 1 01/23/2024 18:29 WG2211437
sec-Butylbenzene U 0.125 0.500 1 01/23/2024 18:29 WG2211437
tert-Butylbenzene U 0.127 0.500 1 01/23/2024 18:29 WG2211437
Carbon disulfide U 0.0962 0.500 1 01/23/2024 18:29 WG2211437
Carbon tetrachloride U 0.128 0.500 1 01/23/2024 18:29 WG2211437
Chlorobenzene U 0.117 0.500 1 01/23/2024 18:29 WG2211437
Chlorodibromomethane U 0.140 0.500 1 01/23/2024 18:29 WG2211437
Chloroethane U 0.192 2.50 1 01/23/2024 18:29 WG2211437
Chloroform U 0.111 0.500 1 01/23/2024 18:29 WG2211437
Chloromethane U 0.960 1.25 1 01/25/2024 14:56 WG2213245
2-Chlorotoluene U 0.106 0.500 1 01/23/2024 18:29 WG2211437
4-Chlorotoluene U 0.114 0.500 1 01/23/2024 18:29 WG2211437
1,2-Dibromo-3-Chloropropane U 0.276 2.50 1 01/23/2024 18:29 WG2211437
1,2-Dibromoethane U 0.126 0.500 1 01/23/2024 18:29 WG2211437
Dibromomethane U 0.122 0.500 1 01/23/2024 18:29 WG2211437
1,2-Dichlorobenzene U 0.107 0.500 1 01/23/2024 18:29 WG2211437
1,3-Dichlorobenzene U 0.299 0.500 1 01/23/2024 18:29 WG2211437
1,4-Dichlorobenzene U 0.120 0.500 1 01/23/2024 18:29 WG2211437
Dichlorodifluoromethane U 0.374 2.50 1 01/23/2024 18:29 WG2211437
1,1-Dichloroethane U 0.100 0.500 1 01/23/2024 18:29 WG2211437
1,2-Dichloroethane U 0.0819 0.500 1 01/23/2024 18:29 WG2211437
1,1-Dichloroethene U 0.188 0.500 1 01/23/2024 18:29 WG2211437
cis-1,2-Dichloroethene U 0.126 0.500 1 01/23/2024 18:29 WG2211437
trans-1,2-Dichloroethene U 0.149 0.500 1 01/23/2024 18:29 WG2211437
1,2-Dichloropropane U 0.149 0.500 1 01/23/2024 18:29 WG2211437
1,1-Dichloropropene U 0.142 0.500 1 01/23/2024 18:29 WG2211437
1,3-Dichloropropane U 0.109 1.00 1 01/23/2024 18:29 WG2211437
cis-1,3-Dichloropropene U 0.111 0.500 1 01/23/2024 18:29 WG2211437
trans-1,3-Dichloropropene U 0.118 0.500 1 01/23/2024 18:29 WG2211437
trans-1,4-Dichloro-2-butene 1.98 J 0.467 5.00 1 01/24/2024 23:16 WG2212309
2,2-Dichloropropane U J4 0.161 0.500 1 01/23/2024 18:29 WG2211437
Di-isopropyl ether U 0.105 0.500 1 01/23/2024 18:29 WG2211437
Ethylbenzene U 0.137 0.500 1 01/23/2024 18:29 WG2211437
Hexachloro-1,3-butadiene U 0.337 1.00 1 01/23/2024 18:29 WG2211437
2-Hexanone U 0.787 5.00 1 01/23/2024 18:29 WG2211437
n-Hexane U 0.749 5.00 1 01/23/2024 18:29 WG2211437
Iodomethane U 0.554 5.00 1 01/23/2024 18:29 WG2211437
Isopropylbenzene U 0.105 0.500 1 01/23/2024 18:29 WG2211437
p-Isopropyltoluene U 0.120 0.500 1 01/23/2024 18:29 WG2211437
2-Butanone (MEK)U 1.19 5.00 1 01/23/2024 18:29 WG2211437
Methylene Chloride U 0.430 2.50 1 01/23/2024 18:29 WG2211437
4-Methyl-2-pentanone (MIBK)U 0.478 5.00 1 01/23/2024 18:29 WG2211437
Methyl tert-butyl ether U 0.101 0.500 1 01/23/2024 18:29 WG2211437
Naphthalene U C3 0.174 2.50 1 01/23/2024 18:29 WG2211437
n-Propylbenzene U 0.0993 0.500 1 01/23/2024 18:29 WG2211437
Styrene U 0.118 0.500 1 01/23/2024 18:29 WG2211437
1,1,1,2-Tetrachloroethane U 0.147 0.500 1 01/23/2024 18:29 WG2211437
1,1,2,2-Tetrachloroethane U 0.133 0.500 1 01/23/2024 18:29 WG2211437
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
AECOM - Raleigh, NC 60699512 L1697605 01/29/24 09:49 13 of 28
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
AECOM - Raleigh, NC 60699512 L1697605 01/29/24 10:57 13 of 28
SAMPLE RESULTS - 05
L1697605
MW-5
Collected date/time: 01/19/24 13:30
Volatile Organic Compounds (GC/MS) by Method 8260D
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
1,1,2-Trichlorotrifluoroethane U 0.180 0.500 1 01/23/2024 18:29 WG2211437
Tetrachloroethene U 0.300 0.500 1 01/24/2024 23:16 WG2212309
Toluene U 0.278 0.500 1 01/23/2024 18:29 WG2211437
1,2,3-Trichlorobenzene U 0.164 0.500 1 01/23/2024 18:29 WG2211437
1,2,4-Trichlorobenzene U 0.481 1.00 1 01/23/2024 18:29 WG2211437
1,1,1-Trichloroethane U 0.149 0.500 1 01/23/2024 18:29 WG2211437
1,1,2-Trichloroethane U 0.158 0.500 1 01/23/2024 18:29 WG2211437
Trichloroethene U 0.190 0.500 1 01/23/2024 18:29 WG2211437
Trichlorofluoromethane U 0.160 2.50 1 01/23/2024 18:29 WG2211437
1,2,3-Trichloropropane U 0.237 2.50 1 01/23/2024 18:29 WG2211437
1,2,4-Trimethylbenzene U 0.322 0.500 1 01/23/2024 18:29 WG2211437
1,2,3-Trimethylbenzene U 0.104 0.500 1 01/23/2024 18:29 WG2211437
1,3,5-Trimethylbenzene U 0.104 0.500 1 01/23/2024 18:29 WG2211437
Vinyl acetate U 0.692 5.00 1 01/23/2024 18:29 WG2211437
Vinyl chloride U 0.234 0.500 1 01/23/2024 18:29 WG2211437
Xylenes, Total U 0.174 1.50 1 01/23/2024 18:29 WG2211437
(S) Toluene-d8 105 80.0-120 01/23/2024 18:29 WG2211437
(S) Toluene-d8 116 80.0-120 01/24/2024 23:16 WG2212309
(S) Toluene-d8 100 80.0-120 01/25/2024 14:56 WG2213245
(S) 4-Bromofluorobenzene 91.1 77.0-126 01/23/2024 18:29 WG2211437
(S) 4-Bromofluorobenzene 107 77.0-126 01/24/2024 23:16 WG2212309
(S) 4-Bromofluorobenzene 102 77.0-126 01/25/2024 14:56 WG2213245
(S) 1,2-Dichloroethane-d4 95.7 70.0-130 01/23/2024 18:29 WG2211437
(S) 1,2-Dichloroethane-d4 108 70.0-130 01/24/2024 23:16 WG2212309
(S) 1,2-Dichloroethane-d4 106 70.0-130 01/25/2024 14:56 WG2213245
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
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QUALITY CONTROL SUMMARYWG2211437
Volatile Organic Compounds (GC/MS) by Method 8260D L1697605-01,02,03,05
Method Blank (MB)
(MB) R4025759-2 01/23/24 10:12
MB Result MB Qualifier MB MDL MB RDL
Analyte ug/l ug/l ug/l
Acetone U 11.3 25.0
Acrylonitrile U 0.671 5.00
Benzene U 0.0941 0.500
Bromobenzene U 0.118 0.500
Bromodichloromethane U 0.136 0.500
Bromochloromethane U 0.128 0.500
Bromoform U 0.129 0.500
Bromomethane U 0.605 2.50
n-Butylbenzene U 0.157 0.500
sec-Butylbenzene U 0.125 0.500
tert-Butylbenzene U 0.127 0.500
Carbon disulfide 0.132 J 0.0962 0.500
Carbon tetrachloride U 0.128 0.500
Chlorobenzene U 0.117 0.500
Chlorodibromomethane U 0.140 0.500
Chloroethane U 0.192 2.50
Chloroform U 0.111 0.500
2-Chlorotoluene U 0.106 0.500
4-Chlorotoluene U 0.114 0.500
1,2-Dibromo-3-Chloropropane U 0.276 2.50
1,2-Dibromoethane U 0.126 0.500
Dibromomethane U 0.122 0.500
1,2-Dichlorobenzene U 0.107 0.500
1,3-Dichlorobenzene U 0.299 0.500
1,4-Dichlorobenzene U 0.120 0.500
Dichlorodifluoromethane U 0.374 2.50
1,1-Dichloroethane U 0.100 0.500
1,2-Dichloroethane U 0.0819 0.500
1,1-Dichloroethene U 0.188 0.500
cis-1,2-Dichloroethene U 0.126 0.500
trans-1,2-Dichloroethene U 0.149 0.500
1,2-Dichloropropane U 0.149 0.500
1,1-Dichloropropene U 0.142 0.500
1,3-Dichloropropane U 0.109 1.00
cis-1,3-Dichloropropene U 0.111 0.500
trans-1,3-Dichloropropene U 0.118 0.500
2,2-Dichloropropane U 0.161 0.500
Di-isopropyl ether U 0.105 0.500
Ethylbenzene U 0.137 0.500
Hexachloro-1,3-butadiene U 0.337 1.00
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
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QUALITY CONTROL SUMMARYWG2211437
Volatile Organic Compounds (GC/MS) by Method 8260D L1697605-01,02,03,05
Method Blank (MB)
(MB) R4025759-2 01/23/24 10:12
MB Result MB Qualifier MB MDL MB RDL
Analyte ug/l ug/l ug/l
2-Hexanone U 0.787 5.00
n-Hexane U 0.749 5.00
Iodomethane U 0.554 5.00
Isopropylbenzene U 0.105 0.500
p-Isopropyltoluene U 0.120 0.500
2-Butanone (MEK)U 1.19 5.00
Methylene Chloride U 0.430 2.50
4-Methyl-2-pentanone (MIBK)U 0.478 5.00
Methyl tert-butyl ether U 0.101 0.500
Naphthalene U 0.174 2.50
n-Propylbenzene U 0.0993 0.500
Styrene U 0.118 0.500
1,1,1,2-Tetrachloroethane U 0.147 0.500
1,1,2,2-Tetrachloroethane U 0.133 0.500
1,1,2-Trichlorotrifluoroethane U 0.180 0.500
Tetrachloroethene U 0.300 0.500
Toluene U 0.278 0.500
1,2,3-Trichlorobenzene U 0.164 0.500
1,2,4-Trichlorobenzene U 0.481 1.00
1,1,1-Trichloroethane U 0.149 0.500
1,1,2-Trichloroethane U 0.158 0.500
Trichloroethene U 0.190 0.500
Trichlorofluoromethane U 0.160 2.50
1,2,3-Trichloropropane U 0.237 2.50
1,2,4-Trimethylbenzene U 0.322 0.500
1,2,3-Trimethylbenzene U 0.104 0.500
1,3,5-Trimethylbenzene U 0.104 0.500
Vinyl acetate U 0.692 5.00
Vinyl chloride U 0.234 0.500
Xylenes, Total U 0.174 1.50
(S) Toluene-d8 102 80.0-120
(S) 4-Bromofluorobenzene 91.2 77.0-126
(S) 1,2-Dichloroethane-d4 101 70.0-130
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
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QUALITY CONTROL SUMMARYWG2211437
Volatile Organic Compounds (GC/MS) by Method 8260D L1697605-01,02,03,05
Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD)
(LCS) R4025759-1 01/23/24 09:07 • (LCSD) R4025759-3 01/23/24 13:25
Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits
Analyte ug/l ug/l ug/l %%%%%
Acetone 25.0 41.1 42.4 164 170 19.0-160 J4 J4 3.11 27
Acrylonitrile 25.0 28.8 27.4 115 110 55.0-149 4.98 20
Benzene 5.00 4.87 4.70 97.4 94.0 70.0-123 3.55 20
Bromobenzene 5.00 4.78 4.51 95.6 90.2 73.0-121 5.81 20
Bromodichloromethane 5.00 4.92 4.61 98.4 92.2 75.0-120 6.51 20
Bromochloromethane 5.00 5.04 4.78 101 95.6 76.0-122 5.30 20
Bromoform 5.00 4.63 4.73 92.6 94.6 68.0-132 2.14 20
Bromomethane 5.00 7.55 8.29 151 166 10.0-160 J4 9.34 25
n-Butylbenzene 5.00 5.63 5.32 113 106 73.0-125 5.66 20
sec-Butylbenzene 5.00 5.45 4.92 109 98.4 75.0-125 10.2 20
tert-Butylbenzene 5.00 5.23 4.83 105 96.6 76.0-124 7.95 20
Carbon disulfide 5.00 4.39 4.36 87.8 87.2 61.0-128 0.686 20
Carbon tetrachloride 5.00 5.31 5.11 106 102 68.0-126 3.84 20
Chlorobenzene 5.00 5.07 4.59 101 91.8 80.0-121 9.94 20
Chlorodibromomethane 5.00 4.88 4.89 97.6 97.8 77.0-125 0.205 20
Chloroethane 5.00 7.36 6.03 147 121 47.0-150 19.9 20
Chloroform 5.00 4.82 4.66 96.4 93.2 73.0-120 3.38 20
2-Chlorotoluene 5.00 5.36 5.07 107 101 76.0-123 5.56 20
4-Chlorotoluene 5.00 4.89 4.74 97.8 94.8 75.0-122 3.12 20
1,2-Dibromo-3-Chloropropane 5.00 4.27 4.39 85.4 87.8 58.0-134 2.77 20
1,2-Dibromoethane 5.00 4.86 4.44 97.2 88.8 80.0-122 9.03 20
Dibromomethane 5.00 5.04 4.79 101 95.8 80.0-120 5.09 20
1,2-Dichlorobenzene 5.00 5.21 4.84 104 96.8 79.0-121 7.36 20
1,3-Dichlorobenzene 5.00 5.19 4.88 104 97.6 79.0-120 6.16 20
1,4-Dichlorobenzene 5.00 5.13 4.90 103 98.0 79.0-120 4.59 20
Dichlorodifluoromethane 5.00 4.50 4.29 90.0 85.8 51.0-149 4.78 20
1,1-Dichloroethane 5.00 5.02 4.75 100 95.0 70.0-126 5.53 20
1,2-Dichloroethane 5.00 5.45 5.42 109 108 70.0-128 0.552 20
1,1-Dichloroethene 5.00 4.57 4.33 91.4 86.6 71.0-124 5.39 20
cis-1,2-Dichloroethene 5.00 4.85 4.52 97.0 90.4 73.0-120 7.04 20
trans-1,2-Dichloroethene 5.00 4.59 4.31 91.8 86.2 73.0-120 6.29 20
1,2-Dichloropropane 5.00 4.99 4.84 99.8 96.8 77.0-125 3.05 20
1,1-Dichloropropene 5.00 5.03 4.83 101 96.6 74.0-126 4.06 20
1,3-Dichloropropane 5.00 4.99 4.77 99.8 95.4 80.0-120 4.51 20
cis-1,3-Dichloropropene 5.00 4.65 4.59 93.0 91.8 80.0-123 1.30 20
trans-1,3-Dichloropropene 5.00 4.73 4.89 94.6 97.8 78.0-124 3.33 20
2,2-Dichloropropane 5.00 6.53 5.86 131 117 58.0-130 J4 10.8 20
Di-isopropyl ether 5.00 4.83 4.54 96.6 90.8 58.0-138 6.19 20
Ethylbenzene 5.00 5.02 4.77 100 95.4 79.0-123 5.11 20
Hexachloro-1,3-butadiene 5.00 6.34 5.48 127 110 54.0-138 14.6 20
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
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QUALITY CONTROL SUMMARYWG2211437
Volatile Organic Compounds (GC/MS) by Method 8260D L1697605-01,02,03,05
Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD)
(LCS) R4025759-1 01/23/24 09:07 • (LCSD) R4025759-3 01/23/24 13:25
Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits
Analyte ug/l ug/l ug/l %%%%%
2-Hexanone 25.0 25.3 23.9 101 95.6 67.0-149 5.69 20
n-Hexane 5.00 5.03 4.43 101 88.6 57.0-133 12.7 20
Iodomethane 25.0 23.7 22.8 94.8 91.2 33.0-147 3.87 26
Isopropylbenzene 5.00 4.91 4.64 98.2 92.8 76.0-127 5.65 20
p-Isopropyltoluene 5.00 5.25 4.67 105 93.4 76.0-125 11.7 20
2-Butanone (MEK)25.0 30.8 31.1 123 124 44.0-160 0.969 20
Methylene Chloride 5.00 4.49 4.29 89.8 85.8 67.0-120 4.56 20
4-Methyl-2-pentanone (MIBK)25.0 27.2 26.6 109 106 68.0-142 2.23 20
Methyl tert-butyl ether 5.00 4.76 4.58 95.2 91.6 68.0-125 3.85 20
Naphthalene 5.00 3.96 3.92 79.2 78.4 54.0-135 1.02 20
n-Propylbenzene 5.00 5.19 4.82 104 96.4 77.0-124 7.39 20
Styrene 5.00 4.51 4.12 90.2 82.4 73.0-130 9.04 20
1,1,1,2-Tetrachloroethane 5.00 5.32 4.90 106 98.0 75.0-125 8.22 20
1,1,2,2-Tetrachloroethane 5.00 5.15 4.90 103 98.0 65.0-130 4.98 20
1,1,2-Trichlorotrifluoroethane 5.00 4.77 4.44 95.4 88.8 69.0-132 7.17 20
Tetrachloroethene 5.00 4.80 4.64 96.0 92.8 72.0-132 3.39 20
Toluene 5.00 4.81 4.63 96.2 92.6 79.0-120 3.81 20
1,2,3-Trichlorobenzene 5.00 4.62 5.03 92.4 101 50.0-138 8.50 20
1,2,4-Trichlorobenzene 5.00 5.11 4.77 102 95.4 57.0-137 6.88 20
1,1,1-Trichloroethane 5.00 5.15 5.07 103 101 73.0-124 1.57 20
1,1,2-Trichloroethane 5.00 4.75 4.43 95.0 88.6 80.0-120 6.97 20
Trichloroethene 5.00 5.08 4.83 102 96.6 78.0-124 5.05 20
Trichlorofluoromethane 5.00 6.73 6.82 135 136 59.0-147 1.33 20
1,2,3-Trichloropropane 5.00 5.52 5.29 110 106 73.0-130 4.26 20
1,2,4-Trimethylbenzene 5.00 4.89 4.51 97.8 90.2 76.0-121 8.09 20
1,2,3-Trimethylbenzene 5.00 5.14 4.72 103 94.4 77.0-120 8.52 20
1,3,5-Trimethylbenzene 5.00 5.10 4.63 102 92.6 76.0-122 9.66 20
Vinyl acetate 25.0 29.0 24.1 116 96.4 11.0-160 18.5 20
Vinyl chloride 5.00 6.18 6.13 124 123 67.0-131 0.812 20
Xylenes, Total 15.0 14.8 13.7 98.7 91.3 79.0-123 7.72 20
(S) Toluene-d8 99.4 99.8 80.0-120
(S) 4-Bromofluorobenzene 93.1 91.3 77.0-126
(S) 1,2-Dichloroethane-d4 99.7 103 70.0-130
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
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QUALITY CONTROL SUMMARYWG2211437
Volatile Organic Compounds (GC/MS) by Method 8260D L1697605-01,02,03,05
L1697833-11 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD)
(OS) L1697833-11 01/23/24 15:57 • (MS) R4025759-4 01/23/24 20:40 • (MSD) R4025759-5 01/23/24 21:02
Spike Amount Original Result MS Result MSD Result MS Rec.MSD Rec.Dilution Rec. Limits MS Qualifier MSD Qualifier RPD RPD Limits
Analyte ug/l ug/l ug/l ug/l %%%%%
Acetone 25.0 U 27.7 27.4 111 110 1 10.0-160 1.09 35
Acrylonitrile 25.0 U 27.6 26.0 110 104 1 21.0-160 5.97 32
Benzene 5.00 U 5.01 5.16 100 103 1 17.0-158 2.95 27
Bromobenzene 5.00 U 4.94 4.88 98.8 97.6 1 30.0-149 1.22 28
Bromodichloromethane 5.00 U 4.66 4.78 93.2 95.6 1 31.0-150 2.54 27
Bromochloromethane 5.00 U 5.23 5.06 105 101 1 38.0-142 3.30 26
Bromoform 5.00 U 3.80 3.89 76.0 77.8 1 29.0-150 2.34 29
Bromomethane 5.00 U 7.02 6.93 140 139 1 10.0-160 1.29 38
n-Butylbenzene 5.00 U 5.64 5.64 113 113 1 31.0-150 0.000 30
sec-Butylbenzene 5.00 U 5.41 5.69 108 114 1 33.0-155 5.05 29
tert-Butylbenzene 5.00 U 5.10 5.45 102 109 1 34.0-153 6.64 28
Carbon disulfide 5.00 U 4.84 5.15 96.8 103 1 10.0-156 6.21 28
Carbon tetrachloride 5.00 U 5.48 5.77 110 115 1 23.0-159 5.16 28
Chlorobenzene 5.00 U 5.06 5.15 101 103 1 33.0-152 1.76 27
Chlorodibromomethane 5.00 U 4.59 4.40 91.8 88.0 1 37.0-149 4.23 27
Chloroethane 5.00 U 6.66 6.88 133 138 1 10.0-160 3.25 30
Chloroform 5.00 U 5.04 5.25 101 105 1 29.0-154 4.08 28
2-Chlorotoluene 5.00 U 5.21 5.36 104 107 1 32.0-153 2.84 28
4-Chlorotoluene 5.00 U 4.80 5.12 96.0 102 1 32.0-150 6.45 28
1,2-Dibromo-3-Chloropropane 5.00 U 4.54 4.47 90.8 89.4 1 22.0-151 1.55 34
1,2-Dibromoethane 5.00 U 4.59 4.66 91.8 93.2 1 34.0-147 1.51 27
Dibromomethane 5.00 U 5.06 5.16 101 103 1 30.0-151 1.96 27
1,2-Dichlorobenzene 5.00 U 5.60 5.23 112 105 1 34.0-149 6.83 28
1,3-Dichlorobenzene 5.00 U 5.00 5.25 100 105 1 36.0-146 4.88 27
1,4-Dichlorobenzene 5.00 U 5.10 5.37 102 107 1 35.0-142 5.16 27
Dichlorodifluoromethane 5.00 U 5.09 5.46 102 109 1 10.0-160 7.01 29
1,1-Dichloroethane 5.00 U 5.18 5.38 104 108 1 25.0-158 3.79 27
1,2-Dichloroethane 5.00 U 5.46 5.52 109 110 1 29.0-151 1.09 27
1,1-Dichloroethene 5.00 U 5.10 5.30 102 106 1 11.0-160 3.85 29
cis-1,2-Dichloroethene 5.00 U 5.14 5.24 103 105 1 10.0-160 1.93 27
trans-1,2-Dichloroethene 5.00 U 4.94 4.88 98.8 97.6 1 17.0-153 1.22 27
1,2-Dichloropropane 5.00 U 4.97 5.16 99.4 103 1 30.0-156 3.75 27
1,1-Dichloropropene 5.00 U 5.29 5.67 106 113 1 25.0-158 6.93 27
1,3-Dichloropropane 5.00 U 4.98 4.97 99.6 99.4 1 38.0-147 0.201 27
cis-1,3-Dichloropropene 5.00 U 3.91 4.06 78.2 81.2 1 34.0-149 3.76 28
trans-1,3-Dichloropropene 5.00 U 4.09 4.23 81.8 84.6 1 32.0-149 3.37 28
2,2-Dichloropropane 5.00 U 6.57 7.27 131 145 1 24.0-152 10.1 29
Di-isopropyl ether 5.00 U 4.89 4.89 97.8 97.8 1 21.0-160 0.000 28
Ethylbenzene 5.00 U 4.97 5.42 99.4 108 1 30.0-155 8.66 27
Hexachloro-1,3-butadiene 5.00 U 6.76 7.55 135 151 1 20.0-154 11.0 34
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
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QUALITY CONTROL SUMMARYWG2211437
Volatile Organic Compounds (GC/MS) by Method 8260D L1697605-01,02,03,05
L1697833-11 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD)
(OS) L1697833-11 01/23/24 15:57 • (MS) R4025759-4 01/23/24 20:40 • (MSD) R4025759-5 01/23/24 21:02
Spike Amount Original Result MS Result MSD Result MS Rec.MSD Rec.Dilution Rec. Limits MS Qualifier MSD Qualifier RPD RPD Limits
Analyte ug/l ug/l ug/l ug/l %%%%%
2-Hexanone 25.0 U 23.4 23.5 93.6 94.0 1 21.0-160 0.426 29
n-Hexane 5.00 U 4.80 5.41 96.0 108 1 10.0-153 11.9 28
Iodomethane 25.0 U 24.8 25.0 99.2 100 1 10.0-160 0.803 40
Isopropylbenzene 5.00 U 5.23 5.60 105 112 1 28.0-157 6.83 27
p-Isopropyltoluene 5.00 U 5.30 5.59 106 112 1 30.0-154 5.33 29
2-Butanone (MEK)25.0 U 28.6 25.4 114 102 1 10.0-160 11.9 32
Methylene Chloride 5.00 U 4.49 4.48 89.8 89.6 1 23.0-144 0.223 28
4-Methyl-2-pentanone (MIBK)25.0 U 26.4 25.4 106 102 1 29.0-160 3.86 29
Methyl tert-butyl ether 5.00 U 4.97 4.75 99.4 95.0 1 28.0-150 4.53 29
Naphthalene 5.00 U 4.32 4.57 86.4 91.4 1 12.0-156 5.62 35
n-Propylbenzene 5.00 U 5.10 5.22 102 104 1 31.0-154 2.33 28
Styrene 5.00 U 4.50 4.68 90.0 93.6 1 33.0-155 3.92 28
1,1,1,2-Tetrachloroethane 5.00 U 5.47 5.32 109 106 1 36.0-151 2.78 29
1,1,2,2-Tetrachloroethane 5.00 U 4.76 4.70 95.2 94.0 1 33.0-150 1.27 28
1,1,2-Trichlorotrifluoroethane 5.00 U 5.36 5.72 107 114 1 23.0-160 6.50 30
Tetrachloroethene 5.00 U 4.99 5.39 99.8 108 1 10.0-160 7.71 27
Toluene 5.00 U 4.89 5.15 97.8 103 1 26.0-154 5.18 28
1,2,3-Trichlorobenzene 5.00 U 5.54 5.72 111 114 1 17.0-150 3.20 36
1,2,4-Trichlorobenzene 5.00 U 5.66 5.68 113 114 1 24.0-150 0.353 33
1,1,1-Trichloroethane 5.00 U 5.42 5.99 108 120 1 23.0-160 9.99 28
1,1,2-Trichloroethane 5.00 U 4.75 4.68 95.0 93.6 1 35.0-147 1.48 27
Trichloroethene 5.00 U 4.99 5.32 99.8 106 1 10.0-160 6.40 25
Trichlorofluoromethane 5.00 U 8.01 8.50 160 170 1 17.0-160 J5 5.94 31
1,2,3-Trichloropropane 5.00 U 5.17 5.01 103 100 1 34.0-151 3.14 29
1,2,4-Trimethylbenzene 5.00 U 4.88 4.85 97.6 97.0 1 26.0-154 0.617 27
1,2,3-Trimethylbenzene 5.00 U 5.14 5.20 103 104 1 32.0-149 1.16 28
1,3,5-Trimethylbenzene 5.00 U 4.95 5.18 99.0 104 1 28.0-153 4.54 27
Vinyl acetate 25.0 U 27.4 27.1 110 108 1 12.0-160 1.10 31
Vinyl chloride 5.00 U 6.58 6.84 132 137 1 10.0-160 3.87 27
Xylenes, Total 15.0 U 14.7 15.6 98.0 104 1 29.0-154 5.94 28
(S) Toluene-d8 100 102 80.0-120
(S) 4-Bromofluorobenzene 93.4 92.9 77.0-126
(S) 1,2-Dichloroethane-d4 102 99.8 70.0-130
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
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QUALITY CONTROL SUMMARYWG2212309
Volatile Organic Compounds (GC/MS) by Method 8260D L1697605-01,02,03,04,05
Method Blank (MB)
(MB) R4026172-2 01/24/24 14:22
MB Result MB Qualifier MB MDL MB RDL
Analyte ug/l ug/l ug/l
Acrylonitrile U 0.671 5.00
Benzene U 0.0941 0.500
Bromodichloromethane U 0.136 0.500
Bromochloromethane U 0.128 0.500
Bromoform U 0.129 0.500
Bromomethane U 0.605 2.50
n-Butylbenzene U 0.157 0.500
sec-Butylbenzene U 0.125 0.500
tert-Butylbenzene U 0.127 0.500
Carbon disulfide 0.218 J 0.0962 0.500
Carbon tetrachloride U 0.128 0.500
Chlorobenzene U 0.117 0.500
Chlorodibromomethane U 0.140 0.500
Chloroethane U 0.192 2.50
Chloroform 0.116 J 0.111 0.500
2-Chlorotoluene U 0.106 0.500
1,2-Dibromoethane U 0.126 0.500
Dibromomethane U 0.122 0.500
1,2-Dichlorobenzene U 0.107 0.500
1,3-Dichlorobenzene U 0.299 0.500
1,4-Dichlorobenzene U 0.120 0.500
Dichlorodifluoromethane U 0.374 2.50
1,1-Dichloroethane U 0.100 0.500
1,2-Dichloroethane U 0.0819 0.500
1,1-Dichloroethene U 0.188 0.500
cis-1,2-Dichloroethene U 0.126 0.500
trans-1,2-Dichloroethene U 0.149 0.500
1,2-Dichloropropane U 0.149 0.500
1,1-Dichloropropene U 0.142 0.500
1,3-Dichloropropane U 0.109 1.00
cis-1,3-Dichloropropene U 0.111 0.500
trans-1,3-Dichloropropene U 0.118 0.500
trans-1,4-Dichloro-2-butene U 0.467 5.00
2,2-Dichloropropane U 0.161 0.500
Di-isopropyl ether U 0.105 0.500
Ethylbenzene U 0.137 0.500
Iodomethane U 0.554 5.00
Isopropylbenzene U 0.105 0.500
p-Isopropyltoluene U 0.120 0.500
Methylene Chloride U 0.430 2.50
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
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QUALITY CONTROL SUMMARYWG2212309
Volatile Organic Compounds (GC/MS) by Method 8260D L1697605-01,02,03,04,05
Method Blank (MB)
(MB) R4026172-2 01/24/24 14:22
MB Result MB Qualifier MB MDL MB RDL
Analyte ug/l ug/l ug/l
4-Methyl-2-pentanone (MIBK)U 0.478 5.00
Methyl tert-butyl ether U 0.101 0.500
n-Propylbenzene U 0.0993 0.500
Styrene U 0.118 0.500
1,1,1,2-Tetrachloroethane U 0.147 0.500
1,1,2,2-Tetrachloroethane U 0.133 0.500
1,1,2-Trichlorotrifluoroethane U 0.180 0.500
Tetrachloroethene U 0.300 0.500
Toluene U 0.278 0.500
1,2,3-Trichlorobenzene U 0.164 0.500
1,2,4-Trichlorobenzene U 0.481 1.00
1,1,1-Trichloroethane U 0.149 0.500
1,1,2-Trichloroethane U 0.158 0.500
Trichloroethene U 0.190 0.500
Trichlorofluoromethane U 0.160 2.50
1,2,3-Trichloropropane U 0.237 2.50
1,3,5-Trimethylbenzene U 0.104 0.500
Vinyl acetate U 0.692 5.00
Vinyl chloride U 0.234 0.500
Xylenes, Total U 0.174 1.50
(S) Toluene-d8 118 80.0-120
(S) 4-Bromofluorobenzene 105 77.0-126
(S) 1,2-Dichloroethane-d4 108 70.0-130
Laboratory Control Sample (LCS)
(LCS) R4026172-1 01/24/24 13:39
Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier
Analyte ug/l ug/l %%
Acrylonitrile 25.0 20.2 80.8 55.0-149
Benzene 5.00 4.67 93.4 70.0-123
Bromodichloromethane 5.00 4.85 97.0 75.0-120
Bromochloromethane 5.00 5.32 106 76.0-122
Bromoform 5.00 4.34 86.8 68.0-132
Bromomethane 5.00 6.89 138 10.0-160
n-Butylbenzene 5.00 4.21 84.2 73.0-125
sec-Butylbenzene 5.00 4.19 83.8 75.0-125
tert-Butylbenzene 5.00 4.36 87.2 76.0-124
Carbon disulfide 5.00 3.57 71.4 61.0-128
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
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QUALITY CONTROL SUMMARYWG2212309
Volatile Organic Compounds (GC/MS) by Method 8260D L1697605-01,02,03,04,05
Laboratory Control Sample (LCS)
(LCS) R4026172-1 01/24/24 13:39
Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier
Analyte ug/l ug/l %%
Carbon tetrachloride 5.00 4.89 97.8 68.0-126
Chlorobenzene 5.00 4.90 98.0 80.0-121
Chlorodibromomethane 5.00 4.65 93.0 77.0-125
Chloroethane 5.00 6.11 122 47.0-150
Chloroform 5.00 4.97 99.4 73.0-120
2-Chlorotoluene 5.00 4.06 81.2 76.0-123
1,2-Dibromoethane 5.00 4.42 88.4 80.0-122
Dibromomethane 5.00 4.55 91.0 80.0-120
1,2-Dichlorobenzene 5.00 4.51 90.2 79.0-121
1,3-Dichlorobenzene 5.00 4.59 91.8 79.0-120
1,4-Dichlorobenzene 5.00 4.56 91.2 79.0-120
Dichlorodifluoromethane 5.00 4.22 84.4 51.0-149
1,1-Dichloroethane 5.00 4.35 87.0 70.0-126
1,2-Dichloroethane 5.00 4.72 94.4 70.0-128
1,1-Dichloroethene 5.00 4.09 81.8 71.0-124
cis-1,2-Dichloroethene 5.00 4.43 88.6 73.0-120
trans-1,2-Dichloroethene 5.00 4.41 88.2 73.0-120
1,2-Dichloropropane 5.00 4.71 94.2 77.0-125
1,1-Dichloropropene 5.00 4.55 91.0 74.0-126
1,3-Dichloropropane 5.00 4.77 95.4 80.0-120
cis-1,3-Dichloropropene 5.00 4.48 89.6 80.0-123
trans-1,3-Dichloropropene 5.00 4.34 86.8 78.0-124
trans-1,4-Dichloro-2-butene 5.00 5.31 106 33.0-144
2,2-Dichloropropane 5.00 4.40 88.0 58.0-130
Di-isopropyl ether 5.00 4.20 84.0 58.0-138
Ethylbenzene 5.00 4.89 97.8 79.0-123
Iodomethane 25.0 21.3 85.2 33.0-147
Isopropylbenzene 5.00 4.81 96.2 76.0-127
p-Isopropyltoluene 5.00 4.28 85.6 76.0-125
Methylene Chloride 5.00 4.06 81.2 67.0-120
4-Methyl-2-pentanone (MIBK)25.0 21.7 86.8 68.0-142
Methyl tert-butyl ether 5.00 4.23 84.6 68.0-125
n-Propylbenzene 5.00 4.08 81.6 77.0-124
Styrene 5.00 4.50 90.0 73.0-130
1,1,1,2-Tetrachloroethane 5.00 4.70 94.0 75.0-125
1,1,2,2-Tetrachloroethane 5.00 4.00 80.0 65.0-130
1,1,2-Trichlorotrifluoroethane 5.00 4.34 86.8 69.0-132
Tetrachloroethene 5.00 5.14 103 72.0-132
Toluene 5.00 4.90 98.0 79.0-120
1,2,3-Trichlorobenzene 5.00 4.12 82.4 50.0-138
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
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QUALITY CONTROL SUMMARYWG2212309
Volatile Organic Compounds (GC/MS) by Method 8260D L1697605-01,02,03,04,05
Laboratory Control Sample (LCS)
(LCS) R4026172-1 01/24/24 13:39
Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier
Analyte ug/l ug/l %%
1,2,4-Trichlorobenzene 5.00 3.99 79.8 57.0-137
1,1,1-Trichloroethane 5.00 4.50 90.0 73.0-124
1,1,2-Trichloroethane 5.00 4.82 96.4 80.0-120
Trichloroethene 5.00 4.78 95.6 78.0-124
Trichlorofluoromethane 5.00 4.99 99.8 59.0-147
1,2,3-Trichloropropane 5.00 4.15 83.0 73.0-130
1,3,5-Trimethylbenzene 5.00 4.12 82.4 76.0-122
Vinyl acetate 25.0 31.9 128 11.0-160
Vinyl chloride 5.00 5.49 110 67.0-131
Xylenes, Total 15.0 14.5 96.7 79.0-123
(S) Toluene-d8 113 80.0-120
(S) 4-Bromofluorobenzene 101 77.0-126
(S) 1,2-Dichloroethane-d4 108 70.0-130
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
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QUALITY CONTROL SUMMARYWG2213245
Volatile Organic Compounds (GC/MS) by Method 8260D L1697605-01,02,03,04,05
Method Blank (MB)
(MB) R4026638-2 01/25/24 10:32
MB Result MB Qualifier MB MDL MB RDL
Analyte ug/l ug/l ug/l
Acetone U 11.3 25.0
Bromobenzene U 0.118 0.500
Chloromethane U 0.960 1.25
4-Chlorotoluene U 0.114 0.500
1,2-Dibromo-3-Chloropropane U 0.276 2.50
Hexachloro-1,3-butadiene U 0.337 1.00
2-Hexanone U 0.787 5.00
n-Hexane U 0.749 5.00
2-Butanone (MEK)U 1.19 5.00
Naphthalene U 0.174 2.50
Tetrachloroethene U 0.300 0.500
1,2,4-Trimethylbenzene U 0.322 0.500
1,2,3-Trimethylbenzene U 0.104 0.500
(S) Toluene-d8 98.7 80.0-120
(S) 4-Bromofluorobenzene 96.8 77.0-126
(S) 1,2-Dichloroethane-d4 99.7 70.0-130
Laboratory Control Sample (LCS)
(LCS) R4026638-1 01/25/24 09:35
Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier
Analyte ug/l ug/l %%
Acetone 25.0 41.8 167 19.0-160 J4
Bromobenzene 5.00 5.06 101 73.0-121
Chloromethane 5.00 5.56 111 41.0-142
4-Chlorotoluene 5.00 5.33 107 75.0-122
1,2-Dibromo-3-Chloropropane 5.00 5.43 109 58.0-134
Hexachloro-1,3-butadiene 5.00 5.71 114 54.0-138
2-Hexanone 25.0 29.7 119 67.0-149
n-Hexane 5.00 5.05 101 57.0-133
2-Butanone (MEK)25.0 35.4 142 44.0-160
Naphthalene 5.00 4.89 97.8 54.0-135
Tetrachloroethene 5.00 5.34 107 72.0-132
1,2,4-Trimethylbenzene 5.00 5.49 110 76.0-121
1,2,3-Trimethylbenzene 5.00 5.38 108 77.0-120
(S) Toluene-d8 101 80.0-120
(S) 4-Bromofluorobenzene 103 77.0-126
(S) 1,2-Dichloroethane-d4 107 70.0-130
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
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GLOSSARY OF TERMS
Guide to Reading and Understanding Your Laboratory Report
The information below is designed to better explain the various terms used in your report of analytical results from the Laboratory. This is not
intended as a comprehensive explanation, and if you have additional questions please contact your project representative.
Results Disclaimer - Information that may be provided by the customer, and contained within this report, include Permit Limits, Project Name, Sample ID, Sample Matrix, Sample Preservation, Field Blanks, Field Spikes, Field Duplicates, On-Site Data, Sampling Collection Dates/Times, and Sampling Location. Results relate to the accuracy of this information provided, and as the samples are received.
Abbreviations and Definitions
MDL Method Detection Limit.
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.
Original Sample The non-spiked sample in the prep batch used to determine the Relative Percent Difference (RPD) from a quality control
sample. The Original Sample may not be included within the reported SDG.
Qualifier
This column provides a letter and/or number designation that corresponds to additional information concerning the result
reported. If a Qualifier is present, a definition per Qualifier is provided within the Glossary and Definitions page and
potentially a discussion of possible implications of the Qualifier in the Case Narrative if applicable.
Result
The actual analytical final result (corrected for any sample specific characteristics) reported for your sample. If there was
no measurable result returned for a specific analyte, the result in this column may state “ND” (Not Detected) or “BDL”
(Below Detectable Levels). The information in the results column should always be accompanied by either an MDL
(Method Detection Limit) or RDL (Reporting Detection Limit) that defines the lowest value that the laboratory could detect
or report for this analyte.
Uncertainty
(Radiochemistry)Confidence level of 2 sigma.
Case Narrative (Cn)
A brief discussion about the included sample results, including a discussion of any non-conformances to protocol
observed either at sample receipt by the laboratory from the field or during the analytical process. If present, there will
be a section in the Case Narrative to discuss the meaning of any data qualifiers used in the report.
Quality Control
Summary (Qc)
This section of the report includes the results of the laboratory quality control analyses required by procedure or
analytical methods to assist in evaluating the validity of the results reported for your samples. These analyses are not
being performed on your samples typically, but on laboratory generated material.
Sample Chain of
Custody (Sc)
This is the document created in the field when your samples were initially collected. This is used to verify the time and
date of collection, the person collecting the samples, and the analyses that the laboratory is requested to perform. This
chain of custody also documents all persons (excluding commercial shippers) that have had control or possession of the
samples from the time of collection until delivery to the laboratory for analysis.
Sample Results (Sr)
This section of your report will provide the results of all testing performed on your samples. These results are provided
by sample ID and are separated by the analyses performed on each sample. The header line of each analysis section for
each sample will provide the name and method number for the analysis reported.
Sample Summary (Ss)This section of the Analytical Report defines the specific analyses performed for each sample ID, including the dates and
times of preparation and/or analysis.
Qualifier Description
B The same analyte is found in the associated blank.
C3 The reported concentration is an estimate. The continuing calibration standard associated with this data responded low.
Method sensitivity check is acceptable.
J The identification of the analyte is acceptable; the reported value is an estimate.
J4 The associated batch QC was outside the established quality control range for accuracy.
J5 The sample matrix interfered with the ability to make any accurate determination; spike value is high.
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
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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
5Sr
6Qc
7Gl
8Al
9Sc
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#=CL#
May 03, 2024
LIMS USE: FR - STEPHANIE HEMPEL
LIMS OBJECT ID: 92727559
92727559
Project:
Pace Project No.:
RE:
Stephanie Hempel
AECOM
5438 Wade Park Boulevard,
Suite 200
Raleigh, NC 27607
Barrett's Cleaners DC510004
Dear Stephanie Hempel:
Enclosed are the analytical results for sample(s) received by the laboratory on April 25, 2024. The results relate only to the
samples included in this report. Results reported herein conform to the applicable TNI/NELAC Standards and the
laboratory's Quality Manual, where applicable, unless otherwise noted in the body of the report.
The test results provided in this final report were generated by each of the following laboratories within the Pace Network:
• Pace Analytical Services - Charlotte
If you have any questions concerning this report, please feel free to contact me.
Sincerely,
Nicole D'Oleo
[e-mail]
Project Manager
[phone]
Enclosures
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 1 of 28
#=CP#
CERTIFICATIONS
Pace Project No.:
Project:
92727559
Barrett's Cleaners DC510004
Pace Analytical Services Charlotte
South Carolina Laboratory ID: 99006
9800 Kincey Ave. Ste 100, Huntersville, NC 28078
North Carolina Drinking Water Certification #: 37706
North Carolina Field Services Certification #: 5342
North Carolina Wastewater Certification #: 12
South Carolina Laboratory ID: 99006
South Carolina Certification #: 99006001
South Carolina Drinking Water Cert. #: 99006003
Florida/NELAP Certification #: E87627
Kentucky UST Certification #: 84
Louisiana DoH Drinking Water #: LA029
Virginia/VELAP Certification #: 460221
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 2 of 28
#=SA#
SAMPLE ANALYTE COUNT
Pace Project No.:
Project:
92727559
Barrett's Cleaners DC510004
Lab ID Sample ID Method
Analytes
Reported LaboratoryAnalysts
92727559001 MW-1 EPA 8260D 63 PASI-CJJK
92727559002 MW-2 EPA 8260D 63 PASI-CJJK
92727559003 MW-3 EPA 8260D 63 PASI-CJJK
92727559004 MW-4 EPA 8260D 63 PASI-CSAS
92727559005 MW-5 EPA 8260D 63 PASI-CSAS
PASI-C = Pace Analytical Services - Charlotte
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 3 of 28
#=AR#
ANALYTICAL RESULTS
Pace Project No.:
Project:
92727559
Barrett's Cleaners DC510004
Sample:MW-1 Lab ID:92727559001 Collected:04/24/24 10:50 Received:04/25/24 12:14 Matrix:Water
Parameters Results Units DF Prepared Analyzed CAS No.QualReport Limit
Analytical Method: EPA 8260D
Pace Analytical Services - Charlotte
8260D MSV Low Level
Acetone ND ug/L 05/01/24 18:30 67-64-125.0 1
Benzene ND ug/L 05/01/24 18:30 71-43-21.0 1
Bromobenzene ND ug/L 05/01/24 18:30 108-86-11.0 1
Bromochloromethane ND ug/L 05/01/24 18:30 74-97-51.0 1
Bromodichloromethane ND ug/L 05/01/24 18:30 75-27-41.0 1
Bromoform ND ug/L 05/01/24 18:30 75-25-21.0 1
Bromomethane ND ug/L 05/01/24 18:30 74-83-92.0 1
2-Butanone (MEK)ND ug/L 05/01/24 18:30 78-93-35.0 1
Carbon tetrachloride ND ug/L 05/01/24 18:30 56-23-51.0 1
Chlorobenzene ND ug/L 05/01/24 18:30 108-90-71.0 1
Chloroethane ND ug/L 05/01/24 18:30 75-00-31.0 1
Chloroform ND ug/L 05/01/24 18:30 67-66-31.0 1
Chloromethane ND ug/L 05/01/24 18:30 74-87-3 v11.0 1
2-Chlorotoluene ND ug/L 05/01/24 18:30 95-49-81.0 1
4-Chlorotoluene ND ug/L 05/01/24 18:30 106-43-41.0 1
1,2-Dibromo-3-chloropropane ND ug/L 05/01/24 18:30 96-12-82.0 1
Dibromochloromethane ND ug/L 05/01/24 18:30 124-48-11.0 1
1,2-Dibromoethane (EDB)ND ug/L 05/01/24 18:30 106-93-41.0 1
Dibromomethane ND ug/L 05/01/24 18:30 74-95-31.0 1
1,2-Dichlorobenzene ND ug/L 05/01/24 18:30 95-50-11.0 1
1,3-Dichlorobenzene ND ug/L 05/01/24 18:30 541-73-11.0 1
1,4-Dichlorobenzene ND ug/L 05/01/24 18:30 106-46-71.0 1
Dichlorodifluoromethane ND ug/L 05/01/24 18:30 75-71-81.0 1
1,1-Dichloroethane ND ug/L 05/01/24 18:30 75-34-31.0 1
1,2-Dichloroethane ND ug/L 05/01/24 18:30 107-06-21.0 1
1,1-Dichloroethene ND ug/L 05/01/24 18:30 75-35-41.0 1
cis-1,2-Dichloroethene ND ug/L 05/01/24 18:30 156-59-21.0 1
trans-1,2-Dichloroethene ND ug/L 05/01/24 18:30 156-60-51.0 1
1,2-Dichloropropane ND ug/L 05/01/24 18:30 78-87-51.0 1
1,3-Dichloropropane ND ug/L 05/01/24 18:30 142-28-91.0 1
2,2-Dichloropropane ND ug/L 05/01/24 18:30 594-20-71.0 1
1,1-Dichloropropene ND ug/L 05/01/24 18:30 563-58-61.0 1
cis-1,3-Dichloropropene ND ug/L 05/01/24 18:30 10061-01-51.0 1
trans-1,3-Dichloropropene ND ug/L 05/01/24 18:30 10061-02-61.0 1
Diisopropyl ether ND ug/L 05/01/24 18:30 108-20-31.0 1
Ethylbenzene ND ug/L 05/01/24 18:30 100-41-41.0 1
Hexachloro-1,3-butadiene ND ug/L 05/01/24 18:30 87-68-32.0 1
2-Hexanone ND ug/L 05/01/24 18:30 591-78-65.0 1
p-Isopropyltoluene ND ug/L 05/01/24 18:30 99-87-61.0 1
Methylene Chloride ND ug/L 05/01/24 18:30 75-09-25.0 1
4-Methyl-2-pentanone (MIBK)ND ug/L 05/01/24 18:30 108-10-15.0 1
Methyl-tert-butyl ether ND ug/L 05/01/24 18:30 1634-04-41.0 1
Naphthalene ND ug/L 05/01/24 18:30 91-20-3 v11.0 1
Styrene ND ug/L 05/01/24 18:30 100-42-51.0 1
1,1,1,2-Tetrachloroethane ND ug/L 05/01/24 18:30 630-20-61.0 1
1,1,2,2-Tetrachloroethane ND ug/L 05/01/24 18:30 79-34-51.0 1
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 05/03/2024 01:42 PM
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 4 of 28
#=AR#
ANALYTICAL RESULTS
Pace Project No.:
Project:
92727559
Barrett's Cleaners DC510004
Sample:MW-1 Lab ID:92727559001 Collected:04/24/24 10:50 Received:04/25/24 12:14 Matrix:Water
Parameters Results Units DF Prepared Analyzed CAS No.QualReport Limit
Analytical Method: EPA 8260D
Pace Analytical Services - Charlotte
8260D MSV Low Level
Tetrachloroethene 17.7 ug/L 05/01/24 18:30 127-18-41.0 1
Toluene ND ug/L 05/01/24 18:30 108-88-31.0 1
1,2,3-Trichlorobenzene ND ug/L 05/01/24 18:30 87-61-61.0 1
1,2,4-Trichlorobenzene ND ug/L 05/01/24 18:30 120-82-11.0 1
1,1,1-Trichloroethane ND ug/L 05/01/24 18:30 71-55-61.0 1
1,1,2-Trichloroethane ND ug/L 05/01/24 18:30 79-00-51.0 1
Trichloroethene ND ug/L 05/01/24 18:30 79-01-61.0 1
Trichlorofluoromethane ND ug/L 05/01/24 18:30 75-69-41.0 1
1,2,3-Trichloropropane ND ug/L 05/01/24 18:30 96-18-41.0 1
Vinyl acetate ND ug/L 05/01/24 18:30 108-05-42.0 1
Vinyl chloride ND ug/L 05/01/24 18:30 75-01-41.0 1
Xylene (Total)ND ug/L 05/01/24 18:30 1330-20-71.0 1
m&p-Xylene ND ug/L 05/01/24 18:30 179601-23-12.0 1
o-Xylene ND ug/L 05/01/24 18:30 95-47-61.0 1
Surrogates
4-Bromofluorobenzene (S)98 %05/01/24 18:30 460-00-470-130 1
1,2-Dichloroethane-d4 (S)110 %05/01/24 18:30 17060-07-070-130 1
Toluene-d8 (S)101 %05/01/24 18:30 2037-26-570-130 1
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 05/03/2024 01:42 PM
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 5 of 28
#=AR#
ANALYTICAL RESULTS
Pace Project No.:
Project:
92727559
Barrett's Cleaners DC510004
Sample:MW-2 Lab ID:92727559002 Collected:04/24/24 11:25 Received:04/25/24 12:14 Matrix:Water
Parameters Results Units DF Prepared Analyzed CAS No.QualReport Limit
Analytical Method: EPA 8260D
Pace Analytical Services - Charlotte
8260D MSV Low Level
Acetone ND ug/L 05/01/24 22:07 67-64-11255
Benzene ND ug/L 05/01/24 22:07 71-43-25.0 5
Bromobenzene ND ug/L 05/01/24 22:07 108-86-15.0 5
Bromochloromethane ND ug/L 05/01/24 22:07 74-97-55.0 5
Bromodichloromethane ND ug/L 05/01/24 22:07 75-27-45.0 5
Bromoform ND ug/L 05/01/24 22:07 75-25-25.0 5
Bromomethane ND ug/L 05/01/24 22:07 74-83-910.0 5
2-Butanone (MEK)ND ug/L 05/01/24 22:07 78-93-325.0 5
Carbon tetrachloride ND ug/L 05/01/24 22:07 56-23-55.0 5
Chlorobenzene ND ug/L 05/01/24 22:07 108-90-75.0 5
Chloroethane ND ug/L 05/01/24 22:07 75-00-35.0 5
Chloroform ND ug/L 05/01/24 22:07 67-66-35.0 5
Chloromethane ND ug/L 05/01/24 22:07 74-87-3 v15.0 5
2-Chlorotoluene ND ug/L 05/01/24 22:07 95-49-85.0 5
4-Chlorotoluene ND ug/L 05/01/24 22:07 106-43-45.0 5
1,2-Dibromo-3-chloropropane ND ug/L 05/01/24 22:07 96-12-810.0 5
Dibromochloromethane ND ug/L 05/01/24 22:07 124-48-15.0 5
1,2-Dibromoethane (EDB)ND ug/L 05/01/24 22:07 106-93-45.0 5
Dibromomethane ND ug/L 05/01/24 22:07 74-95-35.0 5
1,2-Dichlorobenzene ND ug/L 05/01/24 22:07 95-50-15.0 5
1,3-Dichlorobenzene ND ug/L 05/01/24 22:07 541-73-15.0 5
1,4-Dichlorobenzene ND ug/L 05/01/24 22:07 106-46-75.0 5
Dichlorodifluoromethane ND ug/L 05/01/24 22:07 75-71-85.0 5
1,1-Dichloroethane ND ug/L 05/01/24 22:07 75-34-35.0 5
1,2-Dichloroethane ND ug/L 05/01/24 22:07 107-06-25.0 5
1,1-Dichloroethene ND ug/L 05/01/24 22:07 75-35-45.0 5
cis-1,2-Dichloroethene 8.0 ug/L 05/01/24 22:07 156-59-25.0 5
trans-1,2-Dichloroethene ND ug/L 05/01/24 22:07 156-60-55.0 5
1,2-Dichloropropane ND ug/L 05/01/24 22:07 78-87-55.0 5
1,3-Dichloropropane ND ug/L 05/01/24 22:07 142-28-95.0 5
2,2-Dichloropropane ND ug/L 05/01/24 22:07 594-20-75.0 5
1,1-Dichloropropene ND ug/L 05/01/24 22:07 563-58-65.0 5
cis-1,3-Dichloropropene ND ug/L 05/01/24 22:07 10061-01-55.0 5
trans-1,3-Dichloropropene ND ug/L 05/01/24 22:07 10061-02-65.0 5
Diisopropyl ether ND ug/L 05/01/24 22:07 108-20-35.0 5
Ethylbenzene ND ug/L 05/01/24 22:07 100-41-45.0 5
Hexachloro-1,3-butadiene ND ug/L 05/01/24 22:07 87-68-310.0 5
2-Hexanone ND ug/L 05/01/24 22:07 591-78-625.0 5
p-Isopropyltoluene ND ug/L 05/01/24 22:07 99-87-65.0 5
Methylene Chloride ND ug/L 05/01/24 22:07 75-09-225.0 5
4-Methyl-2-pentanone (MIBK)ND ug/L 05/01/24 22:07 108-10-125.0 5
Methyl-tert-butyl ether ND ug/L 05/01/24 22:07 1634-04-45.0 5
Naphthalene ND ug/L 05/01/24 22:07 91-20-3 v15.0 5
Styrene ND ug/L 05/01/24 22:07 100-42-55.0 5
1,1,1,2-Tetrachloroethane ND ug/L 05/01/24 22:07 630-20-65.0 5
1,1,2,2-Tetrachloroethane ND ug/L 05/01/24 22:07 79-34-55.0 5
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 05/03/2024 01:42 PM
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 6 of 28
#=AR#
ANALYTICAL RESULTS
Pace Project No.:
Project:
92727559
Barrett's Cleaners DC510004
Sample:MW-2 Lab ID:92727559002 Collected:04/24/24 11:25 Received:04/25/24 12:14 Matrix:Water
Parameters Results Units DF Prepared Analyzed CAS No.QualReport Limit
Analytical Method: EPA 8260D
Pace Analytical Services - Charlotte
8260D MSV Low Level
Tetrachloroethene 603 ug/L 05/01/24 22:07 127-18-45.0 5
Toluene ND ug/L 05/01/24 22:07 108-88-35.0 5
1,2,3-Trichlorobenzene ND ug/L 05/01/24 22:07 87-61-65.0 5
1,2,4-Trichlorobenzene ND ug/L 05/01/24 22:07 120-82-15.0 5
1,1,1-Trichloroethane ND ug/L 05/01/24 22:07 71-55-65.0 5
1,1,2-Trichloroethane ND ug/L 05/01/24 22:07 79-00-55.0 5
Trichloroethene 27.8 ug/L 05/01/24 22:07 79-01-65.0 5
Trichlorofluoromethane ND ug/L 05/01/24 22:07 75-69-45.0 5
1,2,3-Trichloropropane ND ug/L 05/01/24 22:07 96-18-45.0 5
Vinyl acetate ND ug/L 05/01/24 22:07 108-05-410.0 5
Vinyl chloride ND ug/L 05/01/24 22:07 75-01-45.0 5
Xylene (Total)ND ug/L 05/01/24 22:07 1330-20-75.0 5
m&p-Xylene ND ug/L 05/01/24 22:07 179601-23-110.0 5
o-Xylene ND ug/L 05/01/24 22:07 95-47-65.0 5
Surrogates
4-Bromofluorobenzene (S)98 %05/01/24 22:07 460-00-470-130 5
1,2-Dichloroethane-d4 (S)106 %05/01/24 22:07 17060-07-070-130 5
Toluene-d8 (S)100 %05/01/24 22:07 2037-26-570-130 5
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 05/03/2024 01:42 PM
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 7 of 28
#=AR#
ANALYTICAL RESULTS
Pace Project No.:
Project:
92727559
Barrett's Cleaners DC510004
Sample:MW-3 Lab ID:92727559003 Collected:04/24/24 12:15 Received:04/25/24 12:14 Matrix:Water
Parameters Results Units DF Prepared Analyzed CAS No.QualReport Limit
Analytical Method: EPA 8260D
Pace Analytical Services - Charlotte
8260D MSV Low Level
Acetone ND ug/L 05/01/24 18:48 67-64-125.0 1
Benzene ND ug/L 05/01/24 18:48 71-43-21.0 1
Bromobenzene ND ug/L 05/01/24 18:48 108-86-11.0 1
Bromochloromethane ND ug/L 05/01/24 18:48 74-97-51.0 1
Bromodichloromethane ND ug/L 05/01/24 18:48 75-27-41.0 1
Bromoform ND ug/L 05/01/24 18:48 75-25-21.0 1
Bromomethane ND ug/L 05/01/24 18:48 74-83-92.0 1
2-Butanone (MEK)ND ug/L 05/01/24 18:48 78-93-35.0 1
Carbon tetrachloride ND ug/L 05/01/24 18:48 56-23-51.0 1
Chlorobenzene ND ug/L 05/01/24 18:48 108-90-71.0 1
Chloroethane ND ug/L 05/01/24 18:48 75-00-31.0 1
Chloroform ND ug/L 05/01/24 18:48 67-66-31.0 1
Chloromethane ND ug/L 05/01/24 18:48 74-87-3 v11.0 1
2-Chlorotoluene ND ug/L 05/01/24 18:48 95-49-81.0 1
4-Chlorotoluene ND ug/L 05/01/24 18:48 106-43-41.0 1
1,2-Dibromo-3-chloropropane ND ug/L 05/01/24 18:48 96-12-82.0 1
Dibromochloromethane ND ug/L 05/01/24 18:48 124-48-11.0 1
1,2-Dibromoethane (EDB)ND ug/L 05/01/24 18:48 106-93-41.0 1
Dibromomethane ND ug/L 05/01/24 18:48 74-95-31.0 1
1,2-Dichlorobenzene ND ug/L 05/01/24 18:48 95-50-11.0 1
1,3-Dichlorobenzene ND ug/L 05/01/24 18:48 541-73-11.0 1
1,4-Dichlorobenzene ND ug/L 05/01/24 18:48 106-46-71.0 1
Dichlorodifluoromethane ND ug/L 05/01/24 18:48 75-71-81.0 1
1,1-Dichloroethane ND ug/L 05/01/24 18:48 75-34-31.0 1
1,2-Dichloroethane ND ug/L 05/01/24 18:48 107-06-21.0 1
1,1-Dichloroethene ND ug/L 05/01/24 18:48 75-35-41.0 1
cis-1,2-Dichloroethene ND ug/L 05/01/24 18:48 156-59-21.0 1
trans-1,2-Dichloroethene ND ug/L 05/01/24 18:48 156-60-51.0 1
1,2-Dichloropropane ND ug/L 05/01/24 18:48 78-87-51.0 1
1,3-Dichloropropane ND ug/L 05/01/24 18:48 142-28-91.0 1
2,2-Dichloropropane ND ug/L 05/01/24 18:48 594-20-71.0 1
1,1-Dichloropropene ND ug/L 05/01/24 18:48 563-58-61.0 1
cis-1,3-Dichloropropene ND ug/L 05/01/24 18:48 10061-01-51.0 1
trans-1,3-Dichloropropene ND ug/L 05/01/24 18:48 10061-02-61.0 1
Diisopropyl ether ND ug/L 05/01/24 18:48 108-20-31.0 1
Ethylbenzene ND ug/L 05/01/24 18:48 100-41-41.0 1
Hexachloro-1,3-butadiene ND ug/L 05/01/24 18:48 87-68-32.0 1
2-Hexanone ND ug/L 05/01/24 18:48 591-78-65.0 1
p-Isopropyltoluene ND ug/L 05/01/24 18:48 99-87-61.0 1
Methylene Chloride ND ug/L 05/01/24 18:48 75-09-25.0 1
4-Methyl-2-pentanone (MIBK)ND ug/L 05/01/24 18:48 108-10-15.0 1
Methyl-tert-butyl ether ND ug/L 05/01/24 18:48 1634-04-41.0 1
Naphthalene ND ug/L 05/01/24 18:48 91-20-3 v11.0 1
Styrene ND ug/L 05/01/24 18:48 100-42-51.0 1
1,1,1,2-Tetrachloroethane ND ug/L 05/01/24 18:48 630-20-61.0 1
1,1,2,2-Tetrachloroethane ND ug/L 05/01/24 18:48 79-34-51.0 1
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 05/03/2024 01:42 PM
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 8 of 28
#=AR#
ANALYTICAL RESULTS
Pace Project No.:
Project:
92727559
Barrett's Cleaners DC510004
Sample:MW-3 Lab ID:92727559003 Collected:04/24/24 12:15 Received:04/25/24 12:14 Matrix:Water
Parameters Results Units DF Prepared Analyzed CAS No.QualReport Limit
Analytical Method: EPA 8260D
Pace Analytical Services - Charlotte
8260D MSV Low Level
Tetrachloroethene ND ug/L 05/01/24 18:48 127-18-41.0 1
Toluene ND ug/L 05/01/24 18:48 108-88-31.0 1
1,2,3-Trichlorobenzene ND ug/L 05/01/24 18:48 87-61-61.0 1
1,2,4-Trichlorobenzene ND ug/L 05/01/24 18:48 120-82-11.0 1
1,1,1-Trichloroethane ND ug/L 05/01/24 18:48 71-55-61.0 1
1,1,2-Trichloroethane ND ug/L 05/01/24 18:48 79-00-51.0 1
Trichloroethene ND ug/L 05/01/24 18:48 79-01-61.0 1
Trichlorofluoromethane ND ug/L 05/01/24 18:48 75-69-41.0 1
1,2,3-Trichloropropane ND ug/L 05/01/24 18:48 96-18-41.0 1
Vinyl acetate ND ug/L 05/01/24 18:48 108-05-42.0 1
Vinyl chloride ND ug/L 05/01/24 18:48 75-01-41.0 1
Xylene (Total)ND ug/L 05/01/24 18:48 1330-20-71.0 1
m&p-Xylene ND ug/L 05/01/24 18:48 179601-23-12.0 1
o-Xylene ND ug/L 05/01/24 18:48 95-47-61.0 1
Surrogates
4-Bromofluorobenzene (S)97 %05/01/24 18:48 460-00-470-130 1
1,2-Dichloroethane-d4 (S)111 %05/01/24 18:48 17060-07-070-130 1
Toluene-d8 (S)101 %05/01/24 18:48 2037-26-570-130 1
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 05/03/2024 01:42 PM
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 9 of 28
#=AR#
ANALYTICAL RESULTS
Pace Project No.:
Project:
92727559
Barrett's Cleaners DC510004
Sample:MW-4 Lab ID:92727559004 Collected:04/24/24 10:15 Received:04/25/24 12:14 Matrix:Water
Parameters Results Units DF Prepared Analyzed CAS No.QualReport Limit
Analytical Method: EPA 8260D
Pace Analytical Services - Charlotte
8260D MSV Low Level
Acetone ND ug/L 05/02/24 15:46 67-64-125.0 1
Benzene ND ug/L 05/02/24 15:46 71-43-21.0 1
Bromobenzene ND ug/L 05/02/24 15:46 108-86-11.0 1
Bromochloromethane ND ug/L 05/02/24 15:46 74-97-51.0 1
Bromodichloromethane ND ug/L 05/02/24 15:46 75-27-41.0 1
Bromoform ND ug/L 05/02/24 15:46 75-25-21.0 1
Bromomethane ND ug/L 05/02/24 15:46 74-83-92.0 1
2-Butanone (MEK)ND ug/L 05/02/24 15:46 78-93-35.0 1
Carbon tetrachloride ND ug/L 05/02/24 15:46 56-23-51.0 1
Chlorobenzene ND ug/L 05/02/24 15:46 108-90-71.0 1
Chloroethane ND ug/L 05/02/24 15:46 75-00-31.0 1
Chloroform ND ug/L 05/02/24 15:46 67-66-31.0 1
Chloromethane ND ug/L 05/02/24 15:46 74-87-31.0 1
2-Chlorotoluene ND ug/L 05/02/24 15:46 95-49-81.0 1
4-Chlorotoluene ND ug/L 05/02/24 15:46 106-43-41.0 1
1,2-Dibromo-3-chloropropane ND ug/L 05/02/24 15:46 96-12-82.0 1
Dibromochloromethane ND ug/L 05/02/24 15:46 124-48-11.0 1
1,2-Dibromoethane (EDB)ND ug/L 05/02/24 15:46 106-93-41.0 1
Dibromomethane ND ug/L 05/02/24 15:46 74-95-31.0 1
1,2-Dichlorobenzene ND ug/L 05/02/24 15:46 95-50-11.0 1
1,3-Dichlorobenzene ND ug/L 05/02/24 15:46 541-73-11.0 1
1,4-Dichlorobenzene ND ug/L 05/02/24 15:46 106-46-71.0 1
Dichlorodifluoromethane ND ug/L 05/02/24 15:46 75-71-81.0 1
1,1-Dichloroethane ND ug/L 05/02/24 15:46 75-34-31.0 1
1,2-Dichloroethane ND ug/L 05/02/24 15:46 107-06-21.0 1
1,1-Dichloroethene ND ug/L 05/02/24 15:46 75-35-41.0 1
cis-1,2-Dichloroethene ND ug/L 05/02/24 15:46 156-59-21.0 1
trans-1,2-Dichloroethene ND ug/L 05/02/24 15:46 156-60-51.0 1
1,2-Dichloropropane ND ug/L 05/02/24 15:46 78-87-51.0 1
1,3-Dichloropropane ND ug/L 05/02/24 15:46 142-28-91.0 1
2,2-Dichloropropane ND ug/L 05/02/24 15:46 594-20-71.0 1
1,1-Dichloropropene ND ug/L 05/02/24 15:46 563-58-61.0 1
cis-1,3-Dichloropropene ND ug/L 05/02/24 15:46 10061-01-51.0 1
trans-1,3-Dichloropropene ND ug/L 05/02/24 15:46 10061-02-61.0 1
Diisopropyl ether ND ug/L 05/02/24 15:46 108-20-31.0 1
Ethylbenzene ND ug/L 05/02/24 15:46 100-41-41.0 1
Hexachloro-1,3-butadiene ND ug/L 05/02/24 15:46 87-68-32.0 1
2-Hexanone ND ug/L 05/02/24 15:46 591-78-6 v25.0 1
p-Isopropyltoluene ND ug/L 05/02/24 15:46 99-87-61.0 1
Methylene Chloride ND ug/L 05/02/24 15:46 75-09-25.0 1
4-Methyl-2-pentanone (MIBK)ND ug/L 05/02/24 15:46 108-10-1 L2,v25.0 1
Methyl-tert-butyl ether ND ug/L 05/02/24 15:46 1634-04-41.0 1
Naphthalene ND ug/L 05/02/24 15:46 91-20-3 v21.0 1
Styrene ND ug/L 05/02/24 15:46 100-42-51.0 1
1,1,1,2-Tetrachloroethane ND ug/L 05/02/24 15:46 630-20-61.0 1
1,1,2,2-Tetrachloroethane ND ug/L 05/02/24 15:46 79-34-51.0 1
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 05/03/2024 01:42 PM
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 10 of 28
#=AR#
ANALYTICAL RESULTS
Pace Project No.:
Project:
92727559
Barrett's Cleaners DC510004
Sample:MW-4 Lab ID:92727559004 Collected:04/24/24 10:15 Received:04/25/24 12:14 Matrix:Water
Parameters Results Units DF Prepared Analyzed CAS No.QualReport Limit
Analytical Method: EPA 8260D
Pace Analytical Services - Charlotte
8260D MSV Low Level
Tetrachloroethene ND ug/L 05/02/24 15:46 127-18-41.0 1
Toluene ND ug/L 05/02/24 15:46 108-88-31.0 1
1,2,3-Trichlorobenzene ND ug/L 05/02/24 15:46 87-61-61.0 1
1,2,4-Trichlorobenzene ND ug/L 05/02/24 15:46 120-82-11.0 1
1,1,1-Trichloroethane ND ug/L 05/02/24 15:46 71-55-61.0 1
1,1,2-Trichloroethane ND ug/L 05/02/24 15:46 79-00-51.0 1
Trichloroethene ND ug/L 05/02/24 15:46 79-01-61.0 1
Trichlorofluoromethane ND ug/L 05/02/24 15:46 75-69-41.0 1
1,2,3-Trichloropropane ND ug/L 05/02/24 15:46 96-18-41.0 1
Vinyl acetate ND ug/L 05/02/24 15:46 108-05-42.0 1
Vinyl chloride ND ug/L 05/02/24 15:46 75-01-41.0 1
Xylene (Total)ND ug/L 05/02/24 15:46 1330-20-71.0 1
m&p-Xylene ND ug/L 05/02/24 15:46 179601-23-12.0 1
o-Xylene ND ug/L 05/02/24 15:46 95-47-61.0 1
Surrogates
4-Bromofluorobenzene (S)104 %05/02/24 15:46 460-00-470-130 1
1,2-Dichloroethane-d4 (S)106 %05/02/24 15:46 17060-07-070-130 1
Toluene-d8 (S)106 %05/02/24 15:46 2037-26-570-130 1
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 05/03/2024 01:42 PM
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 11 of 28
#=AR#
ANALYTICAL RESULTS
Pace Project No.:
Project:
92727559
Barrett's Cleaners DC510004
Sample:MW-5 Lab ID:92727559005 Collected:04/24/24 11:45 Received:04/25/24 12:14 Matrix:Water
Parameters Results Units DF Prepared Analyzed CAS No.QualReport Limit
Analytical Method: EPA 8260D
Pace Analytical Services - Charlotte
8260D MSV Low Level
Acetone ND ug/L 05/02/24 16:04 67-64-125.0 1
Benzene ND ug/L 05/02/24 16:04 71-43-21.0 1
Bromobenzene ND ug/L 05/02/24 16:04 108-86-11.0 1
Bromochloromethane ND ug/L 05/02/24 16:04 74-97-51.0 1
Bromodichloromethane ND ug/L 05/02/24 16:04 75-27-41.0 1
Bromoform ND ug/L 05/02/24 16:04 75-25-21.0 1
Bromomethane ND ug/L 05/02/24 16:04 74-83-92.0 1
2-Butanone (MEK)ND ug/L 05/02/24 16:04 78-93-35.0 1
Carbon tetrachloride ND ug/L 05/02/24 16:04 56-23-51.0 1
Chlorobenzene ND ug/L 05/02/24 16:04 108-90-71.0 1
Chloroethane ND ug/L 05/02/24 16:04 75-00-31.0 1
Chloroform ND ug/L 05/02/24 16:04 67-66-31.0 1
Chloromethane ND ug/L 05/02/24 16:04 74-87-31.0 1
2-Chlorotoluene ND ug/L 05/02/24 16:04 95-49-81.0 1
4-Chlorotoluene ND ug/L 05/02/24 16:04 106-43-41.0 1
1,2-Dibromo-3-chloropropane ND ug/L 05/02/24 16:04 96-12-82.0 1
Dibromochloromethane ND ug/L 05/02/24 16:04 124-48-11.0 1
1,2-Dibromoethane (EDB)ND ug/L 05/02/24 16:04 106-93-41.0 1
Dibromomethane ND ug/L 05/02/24 16:04 74-95-31.0 1
1,2-Dichlorobenzene ND ug/L 05/02/24 16:04 95-50-11.0 1
1,3-Dichlorobenzene ND ug/L 05/02/24 16:04 541-73-11.0 1
1,4-Dichlorobenzene ND ug/L 05/02/24 16:04 106-46-71.0 1
Dichlorodifluoromethane ND ug/L 05/02/24 16:04 75-71-81.0 1
1,1-Dichloroethane ND ug/L 05/02/24 16:04 75-34-31.0 1
1,2-Dichloroethane ND ug/L 05/02/24 16:04 107-06-21.0 1
1,1-Dichloroethene ND ug/L 05/02/24 16:04 75-35-41.0 1
cis-1,2-Dichloroethene ND ug/L 05/02/24 16:04 156-59-21.0 1
trans-1,2-Dichloroethene ND ug/L 05/02/24 16:04 156-60-51.0 1
1,2-Dichloropropane ND ug/L 05/02/24 16:04 78-87-51.0 1
1,3-Dichloropropane ND ug/L 05/02/24 16:04 142-28-91.0 1
2,2-Dichloropropane ND ug/L 05/02/24 16:04 594-20-71.0 1
1,1-Dichloropropene ND ug/L 05/02/24 16:04 563-58-61.0 1
cis-1,3-Dichloropropene ND ug/L 05/02/24 16:04 10061-01-51.0 1
trans-1,3-Dichloropropene ND ug/L 05/02/24 16:04 10061-02-61.0 1
Diisopropyl ether ND ug/L 05/02/24 16:04 108-20-31.0 1
Ethylbenzene ND ug/L 05/02/24 16:04 100-41-41.0 1
Hexachloro-1,3-butadiene ND ug/L 05/02/24 16:04 87-68-32.0 1
2-Hexanone ND ug/L 05/02/24 16:04 591-78-6 v25.0 1
p-Isopropyltoluene ND ug/L 05/02/24 16:04 99-87-61.0 1
Methylene Chloride ND ug/L 05/02/24 16:04 75-09-25.0 1
4-Methyl-2-pentanone (MIBK)ND ug/L 05/02/24 16:04 108-10-1 L2,v25.0 1
Methyl-tert-butyl ether ND ug/L 05/02/24 16:04 1634-04-41.0 1
Naphthalene ND ug/L 05/02/24 16:04 91-20-3 v21.0 1
Styrene ND ug/L 05/02/24 16:04 100-42-51.0 1
1,1,1,2-Tetrachloroethane ND ug/L 05/02/24 16:04 630-20-61.0 1
1,1,2,2-Tetrachloroethane ND ug/L 05/02/24 16:04 79-34-51.0 1
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 05/03/2024 01:42 PM
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 12 of 28
#=AR#
ANALYTICAL RESULTS
Pace Project No.:
Project:
92727559
Barrett's Cleaners DC510004
Sample:MW-5 Lab ID:92727559005 Collected:04/24/24 11:45 Received:04/25/24 12:14 Matrix:Water
Parameters Results Units DF Prepared Analyzed CAS No.QualReport Limit
Analytical Method: EPA 8260D
Pace Analytical Services - Charlotte
8260D MSV Low Level
Tetrachloroethene ND ug/L 05/02/24 16:04 127-18-41.0 1
Toluene ND ug/L 05/02/24 16:04 108-88-31.0 1
1,2,3-Trichlorobenzene ND ug/L 05/02/24 16:04 87-61-61.0 1
1,2,4-Trichlorobenzene ND ug/L 05/02/24 16:04 120-82-11.0 1
1,1,1-Trichloroethane ND ug/L 05/02/24 16:04 71-55-61.0 1
1,1,2-Trichloroethane ND ug/L 05/02/24 16:04 79-00-51.0 1
Trichloroethene ND ug/L 05/02/24 16:04 79-01-61.0 1
Trichlorofluoromethane ND ug/L 05/02/24 16:04 75-69-41.0 1
1,2,3-Trichloropropane ND ug/L 05/02/24 16:04 96-18-41.0 1
Vinyl acetate ND ug/L 05/02/24 16:04 108-05-42.0 1
Vinyl chloride ND ug/L 05/02/24 16:04 75-01-41.0 1
Xylene (Total)ND ug/L 05/02/24 16:04 1330-20-71.0 1
m&p-Xylene ND ug/L 05/02/24 16:04 179601-23-12.0 1
o-Xylene ND ug/L 05/02/24 16:04 95-47-61.0 1
Surrogates
4-Bromofluorobenzene (S)101 %05/02/24 16:04 460-00-470-130 1
1,2-Dichloroethane-d4 (S)100 %05/02/24 16:04 17060-07-070-130 1
Toluene-d8 (S)99 %05/02/24 16:04 2037-26-570-130 1
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 05/03/2024 01:42 PM
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 13 of 28
#=QC#
QUALITY CONTROL DATA
Pace Project No.:
Project:
92727559
Barrett's Cleaners DC510004
Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result.
QC Batch:
QC Batch Method:
Analysis Method:
Analysis Description:
851182
EPA 8260D
EPA 8260D
8260D MSV Low Level
Laboratory:Pace Analytical Services - Charlotte
Associated Lab Samples:92727559001, 92727559002, 92727559003
Parameter Units
Blank
Result
Reporting
Limit Qualifiers
METHOD BLANK:4393361
Associated Lab Samples:92727559001, 92727559002, 92727559003
Matrix:Water
Analyzed
1,1,1,2-Tetrachloroethane ug/L ND 1.0 05/01/24 15:42
1,1,1-Trichloroethane ug/L ND 1.0 05/01/24 15:42
1,1,2,2-Tetrachloroethane ug/L ND 1.0 05/01/24 15:42
1,1,2-Trichloroethane ug/L ND 1.0 05/01/24 15:42
1,1-Dichloroethane ug/L ND 1.0 05/01/24 15:42
1,1-Dichloroethene ug/L ND 1.0 05/01/24 15:42
1,1-Dichloropropene ug/L ND 1.0 05/01/24 15:42
1,2,3-Trichlorobenzene ug/L ND 1.0 05/01/24 15:42
1,2,3-Trichloropropane ug/L ND 1.0 05/01/24 15:42
1,2,4-Trichlorobenzene ug/L ND 1.0 05/01/24 15:42
1,2-Dibromo-3-chloropropane ug/L ND 2.0 05/01/24 15:42
1,2-Dibromoethane (EDB)ug/L ND 1.0 05/01/24 15:42
1,2-Dichlorobenzene ug/L ND 1.0 05/01/24 15:42
1,2-Dichloroethane ug/L ND 1.0 05/01/24 15:42
1,2-Dichloropropane ug/L ND 1.0 05/01/24 15:42
1,3-Dichlorobenzene ug/L ND 1.0 05/01/24 15:42
1,3-Dichloropropane ug/L ND 1.0 05/01/24 15:42
1,4-Dichlorobenzene ug/L ND 1.0 05/01/24 15:42
2,2-Dichloropropane ug/L ND 1.0 05/01/24 15:42
2-Butanone (MEK)ug/L ND 5.0 05/01/24 15:42
2-Chlorotoluene ug/L ND 1.0 05/01/24 15:42
2-Hexanone ug/L ND 5.0 05/01/24 15:42
4-Chlorotoluene ug/L ND 1.0 05/01/24 15:42
4-Methyl-2-pentanone (MIBK)ug/L ND 5.0 05/01/24 15:42
Acetone ug/L ND 25.0 05/01/24 15:42
Benzene ug/L ND 1.0 05/01/24 15:42
Bromobenzene ug/L ND 1.0 05/01/24 15:42
Bromochloromethane ug/L ND 1.0 05/01/24 15:42
Bromodichloromethane ug/L ND 1.0 05/01/24 15:42
Bromoform ug/L ND 1.0 05/01/24 15:42
Bromomethane ug/L ND 2.0 05/01/24 15:42
Carbon tetrachloride ug/L ND 1.0 05/01/24 15:42
Chlorobenzene ug/L ND 1.0 05/01/24 15:42
Chloroethane ug/L ND 1.0 v105/01/24 15:42
Chloroform ug/L ND 1.0 05/01/24 15:42
Chloromethane ug/L ND 1.0 05/01/24 15:42
cis-1,2-Dichloroethene ug/L ND 1.0 05/01/24 15:42
cis-1,3-Dichloropropene ug/L ND 1.0 05/01/24 15:42
Dibromochloromethane ug/L ND 1.0 05/01/24 15:42
Dibromomethane ug/L ND 1.0 05/01/24 15:42
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 05/03/2024 01:42 PM
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 14 of 28
#=QC#
QUALITY CONTROL DATA
Pace Project No.:
Project:
92727559
Barrett's Cleaners DC510004
Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result.
Parameter Units
Blank
Result
Reporting
Limit Qualifiers
METHOD BLANK:4393361
Associated Lab Samples:92727559001, 92727559002, 92727559003
Matrix:Water
Analyzed
Dichlorodifluoromethane ug/L ND 1.0 05/01/24 15:42
Diisopropyl ether ug/L ND 1.0 05/01/24 15:42
Ethylbenzene ug/L ND 1.0 05/01/24 15:42
Hexachloro-1,3-butadiene ug/L ND 2.0 05/01/24 15:42
m&p-Xylene ug/L ND 2.0 05/01/24 15:42
Methyl-tert-butyl ether ug/L ND 1.0 05/01/24 15:42
Methylene Chloride ug/L ND 5.0 05/01/24 15:42
Naphthalene ug/L ND 1.0 v105/01/24 15:42
o-Xylene ug/L ND 1.0 05/01/24 15:42
p-Isopropyltoluene ug/L ND 1.0 05/01/24 15:42
Styrene ug/L ND 1.0 05/01/24 15:42
Tetrachloroethene ug/L ND 1.0 05/01/24 15:42
Toluene ug/L ND 1.0 05/01/24 15:42
trans-1,2-Dichloroethene ug/L ND 1.0 05/01/24 15:42
trans-1,3-Dichloropropene ug/L ND 1.0 05/01/24 15:42
Trichloroethene ug/L ND 1.0 05/01/24 15:42
Trichlorofluoromethane ug/L ND 1.0 05/01/24 15:42
Vinyl acetate ug/L ND 2.0 05/01/24 15:42
Vinyl chloride ug/L ND 1.0 05/01/24 15:42
Xylene (Total)ug/L ND 1.0 05/01/24 15:42
1,2-Dichloroethane-d4 (S)%108 70-130 05/01/24 15:42
4-Bromofluorobenzene (S)%97 70-130 05/01/24 15:42
Toluene-d8 (S)%101 70-130 05/01/24 15:42
Parameter Units
LCS
Result
% Rec
Limits Qualifiers% RecConc.
4393362LABORATORY CONTROL SAMPLE:
LCSSpike
1,1,1,2-Tetrachloroethane ug/L 20.220 101 70-130
1,1,1-Trichloroethane ug/L 20.920 105 70-130
1,1,2,2-Tetrachloroethane ug/L 20.320 102 70-130
1,1,2-Trichloroethane ug/L 20.420 102 70-130
1,1-Dichloroethane ug/L 21.420 107 70-130
1,1-Dichloroethene ug/L 21.620 108 69-131
1,1-Dichloropropene ug/L 21.220 106 70-132
1,2,3-Trichlorobenzene ug/L 22.820 114 70-132
1,2,3-Trichloropropane ug/L 20.220 101 70-130
1,2,4-Trichlorobenzene ug/L 21.920 110 70-130
1,2-Dibromo-3-chloropropane ug/L 21.320 107 70-130
1,2-Dibromoethane (EDB)ug/L 20.420 102 70-130
1,2-Dichlorobenzene ug/L 20.220 101 70-130
1,2-Dichloroethane ug/L 21.020 105 70-130
1,2-Dichloropropane ug/L 20.220 101 70-130
1,3-Dichlorobenzene ug/L 19.920 99 70-130
1,3-Dichloropropane ug/L 20.320 101 70-130
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 05/03/2024 01:42 PM
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 15 of 28
#=QC#
QUALITY CONTROL DATA
Pace Project No.:
Project:
92727559
Barrett's Cleaners DC510004
Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result.
Parameter Units
LCS
Result
% Rec
Limits Qualifiers% RecConc.
4393362LABORATORY CONTROL SAMPLE:
LCSSpike
1,4-Dichlorobenzene ug/L 20.220 101 70-130
2,2-Dichloropropane ug/L 20.620 103 69-130
2-Butanone (MEK)ug/L 44.340 111 67-133
2-Chlorotoluene ug/L 19.620 98 70-130
2-Hexanone ug/L 40.840 102 70-133
4-Chlorotoluene ug/L 19.320 97 70-130
4-Methyl-2-pentanone (MIBK)ug/L 40.840 102 70-130
Acetone ug/L 43.440 109 67-130
Benzene ug/L 20.420 102 70-130
Bromobenzene ug/L 19.620 98 70-130
Bromochloromethane ug/L 22.420 112 70-130
Bromodichloromethane ug/L 20.520 103 70-130
Bromoform ug/L 22.120 110 70-133
Bromomethane ug/L 19.620 98 41-148
Carbon tetrachloride ug/L 20.220 101 70-130
Chlorobenzene ug/L 20.220 101 70-130
Chloroethane ug/L 21.8 v12010941-157
Chloroform ug/L 21.420 107 70-130
Chloromethane ug/L 24.720 123 59-141
cis-1,2-Dichloroethene ug/L 20.820 104 70-130
cis-1,3-Dichloropropene ug/L 20.020 100 70-130
Dibromochloromethane ug/L 21.120 106 70-130
Dibromomethane ug/L 21.520 108 70-130
Dichlorodifluoromethane ug/L 20.720 104 54-147
Diisopropyl ether ug/L 20.920 104 70-130
Ethylbenzene ug/L 19.920 100 70-130
Hexachloro-1,3-butadiene ug/L 20.520 103 70-134
m&p-Xylene ug/L 40.540 101 70-130
Methyl-tert-butyl ether ug/L 21.020 105 70-130
Methylene Chloride ug/L 21.720 109 62-130
Naphthalene ug/L 25.9 v12012970-135
o-Xylene ug/L 20.520 102 70-130
p-Isopropyltoluene ug/L 19.820 99 70-130
Styrene ug/L 20.620 103 70-130
Tetrachloroethene ug/L 19.820 99 70-130
Toluene ug/L 20.220 101 70-130
trans-1,2-Dichloroethene ug/L 21.320 107 70-130
trans-1,3-Dichloropropene ug/L 20.420 102 70-130
Trichloroethene ug/L 21.220 106 70-130
Trichlorofluoromethane ug/L 20.020 100 57-130
Vinyl acetate ug/L 38.840 97 70-141
Vinyl chloride ug/L 22.420 112 66-140
Xylene (Total)ug/L 60.960 102 70-130
1,2-Dichloroethane-d4 (S)%101 70-130
4-Bromofluorobenzene (S)%100 70-130
Toluene-d8 (S)%99 70-130
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 05/03/2024 01:42 PM
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 16 of 28
#=QC#
QUALITY CONTROL DATA
Pace Project No.:
Project:
92727559
Barrett's Cleaners DC510004
Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result.
Parameter Units
MS
Result
% Rec
Limits Qual% RecConc.
4393363MATRIX SPIKE & MATRIX SPIKE DUPLICATE:
MSSpike
Result
92727575024
4393364
MSD
Result
MSD
% Rec RPD
MSDMS
Spike
Conc.
1,1,1,2-Tetrachloroethane ug/L 20 113 70-146114 020ND22.7 22.8
1,1,1-Trichloroethane ug/L 20 97 70-150100 420ND19.4 20.1
1,1,2,2-Tetrachloroethane ug/L 20 128 66-144126 220ND25.6 25.1
1,1,2-Trichloroethane ug/L 20 121 70-142123 220ND24.2 24.7
1,1-Dichloroethane ug/L 20 106 68-150108 220ND21.2 21.6
1,1-Dichloroethene ug/L 20 85 64-16295 1120ND17.3 19.3
1,1-Dichloropropene ug/L 20 99 70-160104 420ND19.8 20.7
1,2,3-Trichlorobenzene ug/L 20 136 66-151137 120ND27.1 27.4
1,2,3-Trichloropropane ug/L 20 122 66-144121 020ND24.4 24.3
1,2,4-Trichlorobenzene ug/L 20 128 69-147124 320ND25.7 24.8
1,2-Dibromo-3-chloropropane ug/L 20 124 62-146125 120ND24.9 25.1
1,2-Dibromoethane (EDB)ug/L 20 122 70-143122 020ND24.3 24.3
1,2-Dichlorobenzene ug/L 20 119 70-142119 120ND23.7 23.9
1,2-Dichloroethane ug/L 20 109 68-145109 120ND21.9 21.7
1,2-Dichloropropane ug/L 20 115 70-144116 120ND22.9 23.2
1,3-Dichlorobenzene ug/L 20 115 70-142117 220ND23.0 23.5
1,3-Dichloropropane ug/L 20 120 70-141120 020ND24.0 24.0
1,4-Dichlorobenzene ug/L 20 120 70-140118 120ND24.0 23.7
2,2-Dichloropropane ug/L 20 91 58-16091 020ND18.1 18.1
2-Butanone (MEK)ug/L 40 134 57-156138 340ND53.5 55.3
2-Chlorotoluene ug/L 20 111 70-148112 120ND22.2 22.3
2-Hexanone ug/L 40 129 62-153127 140ND51.5 50.7
4-Chlorotoluene ug/L 20 111 70-144112 120ND22.2 22.3
4-Methyl-2-pentanone (MIBK)ug/L 40 126 65-144127 140ND50.2 50.7
Acetone ug/L 40 118 49-16211940ND48.9J 49.6J
Benzene ug/L 20 113 68-144114 120ND22.7 22.8
Bromobenzene ug/L 20 118 70-144118 120ND23.7 23.5
Bromochloromethane ug/L 20 118 70-148122 420ND23.5 24.5
Bromodichloromethane ug/L 20 109 70-141112 320ND21.8 22.4
Bromoform ug/L 20 114 59-144119 520ND22.7 23.8
Bromomethane ug/L 20 47 23-19060 2620ND9.3 12.1
Carbon tetrachloride ug/L 20 97 70-147102 620ND19.3 20.5
Chlorobenzene ug/L 20 117 70-143116 120ND23.5 23.1
Chloroethane ug/L 20 84 55-19086 220ND16.8 17.1
Chloroform ug/L 20 108 67-148110 220ND21.6 22.1
Chloromethane ug/L 20 97 38-18098 120ND19.4 19.6
cis-1,2-Dichloroethene ug/L M120-31 67-151-30 020260254254
cis-1,3-Dichloropropene ug/L 20 105 70-142108 220ND21.1 21.5
Dibromochloromethane ug/L 20 115 68-140115 020ND23.1 23.0
Dibromomethane ug/L 20 126 70-142127 120ND25.2 25.4
Dichlorodifluoromethane ug/L 20 67 15-20074 1020ND13.4 14.8
Diisopropyl ether ug/L 20 112 62-149113 120ND22.6 22.8
Ethylbenzene ug/L 20 113 70-145113 020ND22.5 22.5
Hexachloro-1,3-butadiene ug/L 20 115 64-164114 120ND23.0 22.7
m&p-Xylene ug/L 40 113 70-148114 140ND45.1 45.5
Methyl-tert-butyl ether ug/L 20 116 64-146115 1202.4 25.6 25.5
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 05/03/2024 01:42 PM
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 17 of 28
#=QC#
QUALITY CONTROL DATA
Pace Project No.:
Project:
92727559
Barrett's Cleaners DC510004
Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result.
Parameter Units
MS
Result
% Rec
Limits Qual% RecConc.
4393363MATRIX SPIKE & MATRIX SPIKE DUPLICATE:
MSSpike
Result
92727575024
4393364
MSD
Result
MSD
% Rec RPD
MSDMS
Spike
Conc.
Methylene Chloride ug/L 20 115 54-149118 2205.9J 29.0 29.6
Naphthalene ug/L v12015362-154154 020ND30.7 30.8
o-Xylene ug/L 20 115 70-145115 020ND23.1 23.0
p-Isopropyltoluene ug/L 20 111 70-153110 120ND22.1 21.9
Styrene ug/L 20 117 70-147117 020ND23.4 23.4
Tetrachloroethene ug/L 20 115 70-145114 02010.0 33.0 32.9
Toluene ug/L 20 111 65-146113 120ND22.3 22.5
trans-1,2-Dichloroethene ug/L 20 104 69-155104 0203.1 23.9 24.0
trans-1,3-Dichloropropene ug/L 20 106 70-142108 120ND21.3 21.6
Trichloroethene ug/L 20 120 70-152121 12013.0 37.0 37.3
Trichlorofluoromethane ug/L 20 80 60-15885 720ND16.0 17.1
Vinyl acetate ug/L 40 99 56-15799 040ND39.7 39.5
Vinyl chloride ug/L 20 82 51-17883 1203.2 19.6 19.9
Xylene (Total)ug/L 60 114 70-146114 160ND68.2 68.6
1,2-Dichloroethane-d4 (S)%92 70-13092
4-Bromofluorobenzene (S)%101 70-130100
Toluene-d8 (S)%98 70-13098
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 05/03/2024 01:42 PM
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 18 of 28
#=QC#
QUALITY CONTROL DATA
Pace Project No.:
Project:
92727559
Barrett's Cleaners DC510004
Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result.
QC Batch:
QC Batch Method:
Analysis Method:
Analysis Description:
851257
EPA 8260D
EPA 8260D
8260D MSV Low Level
Laboratory:Pace Analytical Services - Charlotte
Associated Lab Samples:92727559004, 92727559005
Parameter Units
Blank
Result
Reporting
Limit Qualifiers
METHOD BLANK:4393758
Associated Lab Samples:92727559004, 92727559005
Matrix:Water
Analyzed
1,1,1,2-Tetrachloroethane ug/L ND 1.0 05/02/24 13:58
1,1,1-Trichloroethane ug/L ND 1.0 05/02/24 13:58
1,1,2,2-Tetrachloroethane ug/L ND 1.0 05/02/24 13:58
1,1,2-Trichloroethane ug/L ND 1.0 05/02/24 13:58
1,1-Dichloroethane ug/L ND 1.0 05/02/24 13:58
1,1-Dichloroethene ug/L ND 1.0 05/02/24 13:58
1,1-Dichloropropene ug/L ND 1.0 05/02/24 13:58
1,2,3-Trichlorobenzene ug/L ND 1.0 05/02/24 13:58
1,2,3-Trichloropropane ug/L ND 1.0 05/02/24 13:58
1,2,4-Trichlorobenzene ug/L ND 1.0 05/02/24 13:58
1,2-Dibromo-3-chloropropane ug/L ND 2.0 05/02/24 13:58
1,2-Dibromoethane (EDB)ug/L ND 1.0 05/02/24 13:58
1,2-Dichlorobenzene ug/L ND 1.0 05/02/24 13:58
1,2-Dichloroethane ug/L ND 1.0 05/02/24 13:58
1,2-Dichloropropane ug/L ND 1.0 05/02/24 13:58
1,3-Dichlorobenzene ug/L ND 1.0 05/02/24 13:58
1,3-Dichloropropane ug/L ND 1.0 05/02/24 13:58
1,4-Dichlorobenzene ug/L ND 1.0 05/02/24 13:58
2,2-Dichloropropane ug/L ND 1.0 05/02/24 13:58
2-Butanone (MEK)ug/L ND 5.0 05/02/24 13:58
2-Chlorotoluene ug/L ND 1.0 05/02/24 13:58
2-Hexanone ug/L ND 5.0 v205/02/24 13:58
4-Chlorotoluene ug/L ND 1.0 05/02/24 13:58
4-Methyl-2-pentanone (MIBK)ug/L ND 5.0 v205/02/24 13:58
Acetone ug/L ND 25.0 05/02/24 13:58
Benzene ug/L ND 1.0 05/02/24 13:58
Bromobenzene ug/L ND 1.0 05/02/24 13:58
Bromochloromethane ug/L ND 1.0 05/02/24 13:58
Bromodichloromethane ug/L ND 1.0 05/02/24 13:58
Bromoform ug/L ND 1.0 05/02/24 13:58
Bromomethane ug/L ND 2.0 05/02/24 13:58
Carbon tetrachloride ug/L ND 1.0 05/02/24 13:58
Chlorobenzene ug/L ND 1.0 05/02/24 13:58
Chloroethane ug/L ND 1.0 05/02/24 13:58
Chloroform ug/L ND 1.0 05/02/24 13:58
Chloromethane ug/L ND 1.0 05/02/24 13:58
cis-1,2-Dichloroethene ug/L ND 1.0 05/02/24 13:58
cis-1,3-Dichloropropene ug/L ND 1.0 05/02/24 13:58
Dibromochloromethane ug/L ND 1.0 05/02/24 13:58
Dibromomethane ug/L ND 1.0 05/02/24 13:58
REPORT OF LABORATORY ANALYSIS
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without the written consent of Pace Analytical Services, LLC.Date: 05/03/2024 01:42 PM
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Page 19 of 28
#=QC#
QUALITY CONTROL DATA
Pace Project No.:
Project:
92727559
Barrett's Cleaners DC510004
Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result.
Parameter Units
Blank
Result
Reporting
Limit Qualifiers
METHOD BLANK:4393758
Associated Lab Samples:92727559004, 92727559005
Matrix:Water
Analyzed
Dichlorodifluoromethane ug/L ND 1.0 05/02/24 13:58
Diisopropyl ether ug/L ND 1.0 05/02/24 13:58
Ethylbenzene ug/L ND 1.0 05/02/24 13:58
Hexachloro-1,3-butadiene ug/L ND 2.0 05/02/24 13:58
m&p-Xylene ug/L ND 2.0 05/02/24 13:58
Methyl-tert-butyl ether ug/L ND 1.0 05/02/24 13:58
Methylene Chloride ug/L ND 5.0 05/02/24 13:58
Naphthalene ug/L ND 1.0 v205/02/24 13:58
o-Xylene ug/L ND 1.0 05/02/24 13:58
p-Isopropyltoluene ug/L ND 1.0 05/02/24 13:58
Styrene ug/L ND 1.0 05/02/24 13:58
Tetrachloroethene ug/L ND 1.0 05/02/24 13:58
Toluene ug/L ND 1.0 05/02/24 13:58
trans-1,2-Dichloroethene ug/L ND 1.0 05/02/24 13:58
trans-1,3-Dichloropropene ug/L ND 1.0 05/02/24 13:58
Trichloroethene ug/L ND 1.0 05/02/24 13:58
Trichlorofluoromethane ug/L ND 1.0 05/02/24 13:58
Vinyl acetate ug/L ND 2.0 05/02/24 13:58
Vinyl chloride ug/L ND 1.0 05/02/24 13:58
Xylene (Total)ug/L ND 1.0 05/02/24 13:58
1,2-Dichloroethane-d4 (S)%99 70-130 05/02/24 13:58
4-Bromofluorobenzene (S)%101 70-130 05/02/24 13:58
Toluene-d8 (S)%104 70-130 05/02/24 13:58
Parameter Units
LCS
Result
% Rec
Limits Qualifiers% RecConc.
4393759LABORATORY CONTROL SAMPLE:
LCSSpike
1,1,1,2-Tetrachloroethane ug/L 19.720 98 70-130
1,1,1-Trichloroethane ug/L 23.120 115 70-130
1,1,2,2-Tetrachloroethane ug/L 16.920 85 70-130
1,1,2-Trichloroethane ug/L 20.120 101 70-130
1,1-Dichloroethane ug/L 22.120 111 70-130
1,1-Dichloroethene ug/L 23.620 118 69-131
1,1-Dichloropropene ug/L 22.620 113 70-132
1,2,3-Trichlorobenzene ug/L 16.520 82 70-132
1,2,3-Trichloropropane ug/L 16.120 80 70-130
1,2,4-Trichlorobenzene ug/L 18.120 90 70-130
1,2-Dibromo-3-chloropropane ug/L 17.220 86 70-130
1,2-Dibromoethane (EDB)ug/L 18.820 94 70-130
1,2-Dichlorobenzene ug/L 18.020 90 70-130
1,2-Dichloroethane ug/L 20.520 103 70-130
1,2-Dichloropropane ug/L 20.120 100 70-130
1,3-Dichlorobenzene ug/L 19.420 97 70-130
1,3-Dichloropropane ug/L 18.020 90 70-130
REPORT OF LABORATORY ANALYSIS
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without the written consent of Pace Analytical Services, LLC.Date: 05/03/2024 01:42 PM
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Huntersville, NC 28078
[phone]
Page 20 of 28
#=QC#
QUALITY CONTROL DATA
Pace Project No.:
Project:
92727559
Barrett's Cleaners DC510004
Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result.
Parameter Units
LCS
Result
% Rec
Limits Qualifiers% RecConc.
4393759LABORATORY CONTROL SAMPLE:
LCSSpike
1,4-Dichlorobenzene ug/L 18.720 94 70-130
2,2-Dichloropropane ug/L 23.920 119 69-130
2-Butanone (MEK)ug/L 36.240 91 67-133
2-Chlorotoluene ug/L 19.320 96 70-130
2-Hexanone ug/L 30.1 v3407570-133
4-Chlorotoluene ug/L 20.520 102 70-130
4-Methyl-2-pentanone (MIBK)ug/L 27.7 L2,v3406970-130
Acetone ug/L 41.640 104 67-130
Benzene ug/L 21.620 108 70-130
Bromobenzene ug/L 19.220 96 70-130
Bromochloromethane ug/L 21.220 106 70-130
Bromodichloromethane ug/L 21.820 109 70-130
Bromoform ug/L 17.320 87 70-133
Bromomethane ug/L 21.220 106 41-148
Carbon tetrachloride ug/L 22.520 113 70-130
Chlorobenzene ug/L 19.420 97 70-130
Chloroethane ug/L 21.120 106 41-157
Chloroform ug/L 22.820 114 70-130
Chloromethane ug/L 22.020 110 59-141
cis-1,2-Dichloroethene ug/L 22.420 112 70-130
cis-1,3-Dichloropropene ug/L 22.120 111 70-130
Dibromochloromethane ug/L 19.520 98 70-130
Dibromomethane ug/L 20.220 101 70-130
Dichlorodifluoromethane ug/L 20.720 103 54-147
Diisopropyl ether ug/L 17.820 89 70-130
Ethylbenzene ug/L 20.020 100 70-130
Hexachloro-1,3-butadiene ug/L 17.020 85 70-134
m&p-Xylene ug/L 41.440 104 70-130
Methyl-tert-butyl ether ug/L 18.320 92 70-130
Methylene Chloride ug/L 21.420 107 62-130
Naphthalene ug/L 14.3 v3207170-135
o-Xylene ug/L 19.420 97 70-130
p-Isopropyltoluene ug/L 20.820 104 70-130
Styrene ug/L 21.120 106 70-130
Tetrachloroethene ug/L 19.120 96 70-130
Toluene ug/L 20.820 104 70-130
trans-1,2-Dichloroethene ug/L 23.320 116 70-130
trans-1,3-Dichloropropene ug/L 19.920 100 70-130
Trichloroethene ug/L 23.120 115 70-130
Trichlorofluoromethane ug/L 22.620 113 57-130
Vinyl acetate ug/L 37.140 93 70-141
Vinyl chloride ug/L 23.320 116 66-140
Xylene (Total)ug/L 60.860 101 70-130
1,2-Dichloroethane-d4 (S)%101 70-130
4-Bromofluorobenzene (S)%100 70-130
Toluene-d8 (S)%102 70-130
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 05/03/2024 01:42 PM
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 21 of 28
#=QC#
QUALITY CONTROL DATA
Pace Project No.:
Project:
92727559
Barrett's Cleaners DC510004
Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result.
Parameter Units
MS
Result
% Rec
Limits Qual% RecConc.
4395422MATRIX SPIKE & MATRIX SPIKE DUPLICATE:
MSSpike
Result
92727575008
4395423
MSD
Result
MSD
% Rec RPD
MSDMS
Spike
Conc.
1,1,1,2-Tetrachloroethane ug/L 20 114 70-146111 320ND22.8 22.2
1,1,1-Trichloroethane ug/L 20 126 70-150124 220ND25.2 24.8
1,1,2,2-Tetrachloroethane ug/L 20 98 66-144100 220ND19.6 19.9
1,1,2-Trichloroethane ug/L 20 132 70-142140 620ND26.5 28.0
1,1-Dichloroethane ug/L 20 114 68-150113 120ND22.8 22.6
1,1-Dichloroethene ug/L 20 91 64-16290 020ND18.1 18.1
1,1-Dichloropropene ug/L 20 119 70-160114 520ND23.9 22.8
1,2,3-Trichlorobenzene ug/L 20 97 66-15197 120ND19.3 19.5
1,2,3-Trichloropropane ug/L 20 96 66-14499 220ND19.3 19.7
1,2,4-Trichlorobenzene ug/L 20 107 69-147108 120ND21.4 21.6
1,2-Dibromo-3-chloropropane ug/L 20 97 62-14697 020ND19.3 19.4
1,2-Dibromoethane (EDB)ug/L 20 110 70-143105 420ND21.9 21.0
1,2-Dichlorobenzene ug/L 20 103 70-142102 020ND20.6 20.5
1,2-Dichloroethane ug/L 20 120 68-145111 820ND24.0 22.2
1,2-Dichloropropane ug/L 20 109 70-144119 920ND21.7 23.7
1,3-Dichlorobenzene ug/L 20 109 70-142105 420ND21.8 20.9
1,3-Dichloropropane ug/L 20 104 70-141106 320ND20.7 21.3
1,4-Dichlorobenzene ug/L 20 101 70-14099 220ND20.1 19.8
2,2-Dichloropropane ug/L 20 121 58-160120 120ND24.3 24.0
2-Butanone (MEK)ug/L 40 100 57-15689 1140ND39.9 35.8
2-Chlorotoluene ug/L 20 102 70-148102 020ND20.4 20.4
2-Hexanone ug/L 40 91 62-15390 140ND36.6 36.2
4-Chlorotoluene ug/L 20 108 70-144107 120ND21.6 21.4
4-Methyl-2-pentanone (MIBK)ug/L v3408565-14492 840ND34.2 36.9
Acetone ug/L M14023949-162224 640ND95.6 89.7
Benzene ug/L 20 111 68-144118 5200.79J 23.0 24.3
Bromobenzene ug/L 20 105 70-144107 220ND21.0 21.4
Bromochloromethane ug/L 20 118 70-148120 120ND23.7 24.0
Bromodichloromethane ug/L 20 117 70-141133 1320ND23.4 26.7
Bromoform ug/L 20 96 59-14492 420ND19.2 18.4
Bromomethane ug/L 20 43 23-19042 220ND8.6 8.4
Carbon tetrachloride ug/L 20 114 70-147116 120ND22.8 23.1
Chlorobenzene ug/L 20 109 70-143110 120ND21.8 22.1
Chloroethane ug/L 20 63 55-19067 620ND12.6 13.4
Chloroform ug/L 20 129 67-148116 1120ND25.7 23.1
Chloromethane ug/L M1202338-18021 620ND4.5 4.3
cis-1,2-Dichloroethene ug/L 20 120 67-151117 220ND23.9 23.5
cis-1,3-Dichloropropene ug/L 20 122 70-142127 420ND24.5 25.4
Dibromochloromethane ug/L 20 113 68-140109 320ND22.5 21.8
Dibromomethane ug/L 20 116 70-142119 220ND23.3 23.7
Dichlorodifluoromethane ug/L M120115-200120NDNDND
Diisopropyl ether ug/L 20 112 62-149105 620ND22.4 21.1
Ethylbenzene ug/L 20 110 70-145110 0200.33J 22.4 22.4
Hexachloro-1,3-butadiene ug/L 20 101 64-164106 520ND20.1 21.3
m&p-Xylene ug/L 40 111 70-148112 1403.4 47.9 48.2
Methyl-tert-butyl ether ug/L 20 106 64-146104 220ND21.3 20.8
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 05/03/2024 01:42 PM
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
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[phone]
Page 22 of 28
#=QC#
QUALITY CONTROL DATA
Pace Project No.:
Project:
92727559
Barrett's Cleaners DC510004
Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result.
Parameter Units
MS
Result
% Rec
Limits Qual% RecConc.
4395422MATRIX SPIKE & MATRIX SPIKE DUPLICATE:
MSSpike
Result
92727575008
4395423
MSD
Result
MSD
% Rec RPD
MSDMS
Spike
Conc.
Methylene Chloride ug/L 20 101 54-14999 220ND20.1 19.7
Naphthalene ug/L v3209362-15495 120ND18.7 18.9
o-Xylene ug/L 20 116 70-145107 8200.73J 23.9 22.1
p-Isopropyltoluene ug/L 20 113 70-153115 220ND22.7 23.1
Styrene ug/L 20 113 70-147112 120ND22.6 22.3
Tetrachloroethene ug/L 20 101 70-145102 120ND20.2 20.4
Toluene ug/L 20 114 65-146121 6200.88J 23.7 25.1
trans-1,2-Dichloroethene ug/L 20 111 69-155110 120ND22.2 22.0
trans-1,3-Dichloropropene ug/L 20 112 70-142120 620ND22.5 24.0
Trichloroethene ug/L 20 115 70-152125 820ND23.0 25.1
Trichlorofluoromethane ug/L 20 70 60-15870 020ND14.0 14.1
Vinyl acetate ug/L 40 110 56-157105 540ND44.0 42.0
Vinyl chloride ug/L M1202651-17825 220ND5.2 5.1
Xylene (Total)ug/L 60 113 70-146110 2604.1 71.8 70.3
1,2-Dichloroethane-d4 (S)%101 70-13097
4-Bromofluorobenzene (S)%106 70-130104
Toluene-d8 (S)%100 70-130104
REPORT OF LABORATORY ANALYSIS
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without the written consent of Pace Analytical Services, LLC.Date: 05/03/2024 01:42 PM
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Huntersville, NC 28078
[phone]
Page 23 of 28
#=QL#
QUALIFIERS
Pace Project No.:
Project:
92727559
Barrett's Cleaners DC510004
DEFINITIONS
DF - Dilution Factor, if reported, represents the factor applied to the reported data due to dilution of the sample aliquot.
ND - Not Detected at or above adjusted reporting limit.
TNTC - Too Numerous To Count
J - Estimated concentration above the adjusted method detection limit and below the adjusted reporting limit.
MDL - Adjusted Method Detection Limit.
PQL - Practical Quantitation Limit.
RL - Reporting Limit - The lowest concentration value that meets project requirements for quantitative data with known precision and
bias for a specific analyte in a specific matrix.
S - Surrogate
1,2-Diphenylhydrazine decomposes to and cannot be separated from Azobenzene using Method 8270. The result for each analyte is
a combined concentration.
Consistent with EPA guidelines, unrounded data are displayed and have been used to calculate % recovery and RPD values.
LCS(D) - Laboratory Control Sample (Duplicate)
MS(D) - Matrix Spike (Duplicate)
DUP - Sample Duplicate
RPD - Relative Percent Difference
NC - Not Calculable.
SG - Silica Gel - Clean-Up
U - Indicates the compound was analyzed for, but not detected.
Acid preservation may not be appropriate for 2 Chloroethylvinyl ether.
A separate vial preserved to a pH of 4-5 is recommended in SW846 Chapter 4 for the analysis of Acrolein and Acrylonitrile by EPA
Method 8260.
N-Nitrosodiphenylamine decomposes and cannot be separated from Diphenylamine using Method 8270. The result reported for
each analyte is a combined concentration.
Reported results are not rounded until the final step prior to reporting. Therefore, calculated parameters that are typically reported as
"Total" may vary slightly from the sum of the reported component parameters.
Pace Analytical is TNI accredited. Contact your Pace PM for the current list of accredited analytes.
TNI - The NELAC Institute.
ANALYTE QUALIFIERS
Analyte recovery in the laboratory control sample (LCS) was below QC limits. Results for this analyte in associated
samples may be biased low.L2
Matrix spike recovery exceeded QC limits. Batch accepted based on laboratory control sample (LCS) recovery.M1
The continuing calibration verification was above the method acceptance limit. Any detection for the analyte in the
associated samples may have a high bias.v1
The continuing calibration verification was below the method acceptance limit. The analyte was not detected in the
associated samples and the sensitivity of the instrument was verified with a reporting limit check standard.v2
The continuing calibration verification was below the method acceptance limit. Any detection for the analyte in the
associated samples may have low bias.v3
REPORT OF LABORATORY ANALYSIS
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without the written consent of Pace Analytical Services, LLC.Date: 05/03/2024 01:42 PM
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Page 24 of 28
#=CR#
QUALITY CONTROL DATA CROSS REFERENCE TABLE
Pace Project No.:
Project:
92727559
Barrett's Cleaners DC510004
Lab ID Sample ID QC Batch Method QC Batch Analytical Method
Analytical
Batch
92727559001 851182MW-1 EPA 8260D
92727559002 851182MW-2 EPA 8260D
92727559003 851182MW-3 EPA 8260D
92727559004 851257MW-4 EPA 8260D
92727559005 851257MW-5 EPA 8260D
REPORT OF LABORATORY ANALYSIS
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without the written consent of Pace Analytical Services, LLC.Date: 05/03/2024 01:42 PM
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Page 25 of 28
Page 26 of 28
Page 27 of 28
Page 28 of 28

APPENDIX C
DSCA RISK CALCULATOR WORKSHEETS

DSCA ID No:
Name/Address of DSCA Site:Barrett’s Cleaners / 261 NC Highway 42 East, Clayton, Johnston County, NC
Name/Address of Sampling Location:Barrett’s Cleaners / 261 NC Highway 42 East, Clayton, Johnston County, NC
Sampling Date:10/20/2024
Sample ID:SG-5
All concentrations are in ug/m3
CAS # Chemical Name:
Soil Gas
Concentration
(ug/m3)
Calculated Indoor
Air Concentration
(ug/m3)
Indoor Air
Screening Level
for Carcinogens
@ TCR = 1E-06
Indoor Air
Screening Level
for Non-
Carcinogens @
THQ = 0.2
Calculated
Carcinogenic Risk
Calculated Non-
Carcinogenic
Hazard
Quotient
127-18-4 Tetrachloroethylene 414 12.42 1.1E+01 8.3E+00 1.2E-06 3.0E-01
79-01-6 Trichloroethylene 1.28 0.0384 4.8E-01 4.2E-01 8.0E-08 1.8E-02
Cumulative: 1.2E-06 3.2E-01
DSCA Soil Gas Risk Calculator - Cumulative Risk for Resident
Version 11, July 2023
DC510004
Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk
values are calculated for these chemicals.
DSCA ID No:
Name/Address of DSCA Site:Barrett’s Cleaners / 261 NC Highway 42 East, Clayton, Johnston County, NC
Name/Address of Sampling Location:Barrett’s Cleaners / 261 NC Highway 42 East, Clayton, Johnston County, NC
Sampling Date:10/20/2024
Sample ID:SG-5
All concentrations are in ug/m3
CAS # Chemical Name:
Soil Gas
Concentration
(ug/m3)
Calculated Indoor
Air Concentration
(ug/m3)
Indoor Air
Screening Level
for Carcinogens
@ TCR = 1E-06
Indoor Air
Screening Level
for Non-
Carcinogens @
THQ = 0.2
Calculated
Carcinogenic Risk
Calculated Non-
Carcinogenic
Hazard
Quotient
127-18-4 Tetrachloroethylene 414 4.14 4.7E+01 3.5E+01 8.8E-08 2.4E-02
79-01-6 Trichloroethylene 1.28 0.0128 3.0E+00 1.8E+00 4.3E-09 1.5E-03
Cumulative: 9.2E-08 2.5E-02
DSCA Soil Gas Risk Calculator - Cumulative Risk for Non-Residential Worker
Version 11, July 2023
DC510004
Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk
values are calculated for these chemicals.
DSCA ID No:
Name/Address of DSCA Site:
Name/Address of Sampling Location:
Sampling Date:10/19/2023
Sample ID:MW-1
Average Groundwater Temperature (°C):25 (Use default of 25⁰C unless site-specific data is available confirming the groundwater temperature during worst-case summer conditions.)
CAS # Chemical Name:
Groundwater
Concentration
(ug/L)
Henry's Constant
at 25°C
(dimensionless)
Temperature
Adjusted Henry's
Constant
(dimensionless)
Henry's Constant
used for
calculations
(dimensionless)
Calculated
Indoor Air
Concentration
(ug/m3)
Indoor Air
Screening Level
for Carcinogens
@ TCR = 1E-06
Indoor Air
Screening Level
for Non-
Carcinogens @
THQ = 0.2
Calculated
Carcinogenic Risk
Calculated Non-
Carcinogenic
Hazard Quotient
67-66-3 Chloroform 0.317 0.150040883 0.150040883 0.150040883 4.8E-02 1.2E-01 2.0E+01 3.9E-07 4.7E-04
156-59-2 Dichloroethylene, cis-1,2-0.166802944 0.166802944 0.166802944 -8.3E+00
156-60-5 Dichloroethylene, trans-1,2-0.383483238 0.383483238 0.383483238 -8.3E+00
127-18-4 Tetrachloroethylene 22.7 0.723630417 0.723630417 0.723630417 1.6E+01 1.1E+01 8.3E+00 1.5E-06 3.9E-01
79-01-6 Trichloroethylene 0.402698283 0.402698283 0.402698283 4.8E-01 4.2E-01
75-01-4 Vinyl Chloride 1.136549469 1.136549469 1.136549469 1.7E-01 1.7E+01
Cumulative: 1.9E-06 3.9E-01
Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals.
DSCA Indoor Air Risk Calculator - Cumulative Risk for Resident
Version 11, July 2023
DC510004
Barrett's Cleaners, 261 NC Hwy 42 E, Clayton, NC
Barrett's Cleaners, 261 NC Hwy 42 E, Clayton, NC
DSCA ID No:
Name/Address of DSCA Site:
Name/Address of Sampling Location:
Sampling Date:10/19/2023
Sample ID:MW-1
Average Groundwater Temperature (°C):25 (Use default of 25⁰C unless site-specific data is available confirming the groundwater temperature during worst-case summer conditions.)
CAS # Chemical Name:
Groundwater
Concentration
(ug/L)
Henry's Constant
at 25°
(dimensionless)
Temperature
Adjusted Henry's
Constant
(dimensionless)
Henry's Constant
used for
calculations
(dimensionless)
Calculated Indoor
Air Concentration
(ug/m3)
Indoor Air
Screening Level
for Carcinogens
@ TCR = 1E-06
Indoor Air
Screening Level
for Non-
Carcinogens @
THQ = 0.2
Calculated
Carcinogenic Risk
Calculated Non-
Carcinogenic
Hazard Quotient
67-66-3 Chloroform 0.317 0.150040883 0.150040883 0.150040883 4.8E-02 5.3E-01 8.6E+01 8.9E-08 1.1E-04
156-59-2 Dichloroethylene, cis-1,2-0.166802944 0.166802944 0.166802944 -3.5E+01
156-60-5 Dichloroethylene, trans-1,2-0.383483238 0.383483238 0.383483238 -3.5E+01
127-18-4 Tetrachloroethylene 22.7 0.723630417 0.723630417 0.723630417 1.6E+01 4.7E+01 3.5E+01 3.5E-07 9.4E-02
79-01-6 Trichloroethylene 0.402698283 0.402698283 0.402698283 3.0E+00 1.8E+00
75-01-4 Vinyl Chloride 1.136549469 1.136549469 1.136549469 2.8E+00 7.0E+01
Cumulative: 4.4E-07 9.4E-02
Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals.
DSCA Indoor Air Risk Calculator - Cumulative Risk for Non-Residential Worker
Version 11, July 2023
DC510004
Barrett's Cleaners, 261 NC Hwy 42 E, Clayton, NC
Barrett's Cleaners, 261 NC Hwy 42 E, Clayton, NC
DSCA ID No:
Name/Address of DSCA Site:
Name/Address of Sampling Location:
Sampling Date:10/19/2023
Sample ID:MW-2
Average Groundwater Temperature (°C):25 (Use default of 25⁰C unless site-specific data is available confirming the groundwater temperature during worst-case summer conditions.)
CAS # Chemical Name:
Groundwater
Concentration
(ug/L)
Henry's Constant
at 25°C
(dimensionless)
Temperature
Adjusted Henry's
Constant
(dimensionless)
Henry's Constant
used for
calculations
(dimensionless)
Calculated
Indoor Air
Concentration
(ug/m3)
Indoor Air
Screening Level
for Carcinogens
@ TCR = 1E-06
Indoor Air
Screening Level
for Non-
Carcinogens @
THQ = 0.2
Calculated
Carcinogenic Risk
Calculated Non-
Carcinogenic
Hazard Quotient
75-27-4 Bromodichloromethane 0.196 0.086672118 0.086672118 0.086672118 1.7E-02 7.6E-02 -2.2E-07
67-66-3 Chloroform 1.22 0.150040883 0.150040883 0.150040883 1.8E-01 1.2E-01 2.0E+01 1.5E-06 1.8E-03
156-59-2 Dichloroethylene, cis-1,2-4.45 0.166802944 0.166802944 0.166802944 7.4E-01 -8.3E+00 1.8E-02
156-60-5 Dichloroethylene, trans-1,2-0.383483238 0.383483238 0.383483238 -8.3E+00
127-18-4 Tetrachloroethylene 606 0.723630417 0.723630417 0.723630417 4.4E+02 1.1E+01 8.3E+00 4.1E-05 1.1E+01
79-01-6 Trichloroethylene 23.4 0.402698283 0.402698283 0.402698283 9.4E+00 4.8E-01 4.2E-01 2.0E-05 4.5E+00
75-01-4 Vinyl Chloride 1.136549469 1.136549469 1.136549469 1.7E-01 1.7E+01
Cumulative: 6.2E-05 1.5E+01
Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals.
DSCA Indoor Air Risk Calculator - Cumulative Risk for Resident
Version 11, July 2023
DC510004
Barrett's Cleaners, 261 NC Hwy 42 E, Clayton, NC
Barrett's Cleaners, 261 NC Hwy 42 E, Clayton, NC
DSCA ID No:
Name/Address of DSCA Site:
Name/Address of Sampling Location:
Sampling Date:10/19/2023
Sample ID:MW-2
Average Groundwater Temperature (°C):25 (Use default of 25⁰C unless site-specific data is available confirming the groundwater temperature during worst-case summer conditions.)
CAS # Chemical Name:
Groundwater
Concentration
(ug/L)
Henry's Constant
at 25°
(dimensionless)
Temperature
Adjusted Henry's
Constant
(dimensionless)
Henry's Constant
used for
calculations
(dimensionless)
Calculated Indoor
Air Concentration
(ug/m3)
Indoor Air
Screening Level
for Carcinogens
@ TCR = 1E-06
Indoor Air
Screening Level
for Non-
Carcinogens @
THQ = 0.2
Calculated
Carcinogenic Risk
Calculated Non-
Carcinogenic
Hazard Quotient
75-27-4 Bromodichloromethane 0.196 0.086672118 0.086672118 0.086672118 1.7E-02 3.3E-01 -5.1E-08
67-66-3 Chloroform 1.22 0.150040883 0.150040883 0.150040883 1.8E-01 5.3E-01 8.6E+01 3.4E-07 4.3E-04
156-59-2 Dichloroethylene, cis-1,2-4.45 0.166802944 0.166802944 0.166802944 7.4E-01 -3.5E+01 4.2E-03
156-60-5 Dichloroethylene, trans-1,2-0.383483238 0.383483238 0.383483238 -3.5E+01
127-18-4 Tetrachloroethylene 606 0.723630417 0.723630417 0.723630417 4.4E+02 4.7E+01 3.5E+01 9.3E-06 2.5E+00
79-01-6 Trichloroethylene 23.4 0.402698283 0.402698283 0.402698283 9.4E+00 3.0E+00 1.8E+00 3.2E-06 1.1E+00
75-01-4 Vinyl Chloride 1.136549469 1.136549469 1.136549469 2.8E+00 7.0E+01
Cumulative: 1.3E-05 3.6E+00
Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals.
DSCA Indoor Air Risk Calculator - Cumulative Risk for Non-Residential Worker
Version 11, July 2023
DC510004
Barrett's Cleaners, 261 NC Hwy 42 E, Clayton, NC
Barrett's Cleaners, 261 NC Hwy 42 E, Clayton, NC
DSCA ID No:
Name/Address of DSCA Site:
Name/Address of Sampling Location:
Sampling Date:10/19/2023
Sample ID:MW-3
Average Groundwater Temperature (°C):25 (Use default of 25⁰C unless site-specific data is available confirming the groundwater temperature during worst-case summer conditions.)
CAS # Chemical Name:
Groundwater
Concentration
(ug/L)
Henry's Constant
at 25°C
(dimensionless)
Temperature
Adjusted Henry's
Constant
(dimensionless)
Henry's Constant
used for
calculations
(dimensionless)
Calculated
Indoor Air
Concentration
(ug/m3)
Indoor Air
Screening Level
for Carcinogens
@ TCR = 1E-06
Indoor Air
Screening Level
for Non-
Carcinogens @
THQ = 0.2
Calculated
Carcinogenic Risk
Calculated Non-
Carcinogenic
Hazard Quotient
67-66-3 Chloroform 0.128 0.150040883 0.150040883 0.150040883 1.9E-02 1.2E-01 2.0E+01 1.6E-07 1.9E-04
156-59-2 Dichloroethylene, cis-1,2-0.166802944 0.166802944 0.166802944 -8.3E+00
156-60-5 Dichloroethylene, trans-1,2-0.383483238 0.383483238 0.383483238 -8.3E+00
127-18-4 Tetrachloroethylene 0.723630417 0.723630417 0.723630417 1.1E+01 8.3E+00
79-01-6 Trichloroethylene 0.402698283 0.402698283 0.402698283 4.8E-01 4.2E-01
75-01-4 Vinyl Chloride 1.136549469 1.136549469 1.136549469 1.7E-01 1.7E+01
Cumulative: 1.6E-07 1.9E-04
Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals.
DSCA Indoor Air Risk Calculator - Cumulative Risk for Resident
Version 11, July 2023
DC510004
Barrett's Cleaners, 261 NC Hwy 42 E, Clayton, NC
Barrett's Cleaners, 261 NC Hwy 42 E, Clayton, NC
DSCA ID No:
Name/Address of DSCA Site:
Name/Address of Sampling Location:
Sampling Date:10/19/2023
Sample ID:MW-3
Average Groundwater Temperature (°C):25 (Use default of 25⁰C unless site-specific data is available confirming the groundwater temperature during worst-case summer conditions.)
CAS # Chemical Name:
Groundwater
Concentration
(ug/L)
Henry's Constant
at 25°
(dimensionless)
Temperature
Adjusted Henry's
Constant
(dimensionless)
Henry's Constant
used for
calculations
(dimensionless)
Calculated Indoor
Air Concentration
(ug/m3)
Indoor Air
Screening Level
for Carcinogens
@ TCR = 1E-06
Indoor Air
Screening Level
for Non-
Carcinogens @
THQ = 0.2
Calculated
Carcinogenic Risk
Calculated Non-
Carcinogenic
Hazard Quotient
67-66-3 Chloroform 0.128 0.150040883 0.150040883 0.150040883 1.9E-02 5.3E-01 8.6E+01 3.6E-08 4.5E-05
156-59-2 Dichloroethylene, cis-1,2-0.166802944 0.166802944 0.166802944 -3.5E+01
156-60-5 Dichloroethylene, trans-1,2-0.383483238 0.383483238 0.383483238 -3.5E+01
127-18-4 Tetrachloroethylene 0.723630417 0.723630417 0.723630417 4.7E+01 3.5E+01
79-01-6 Trichloroethylene 0.402698283 0.402698283 0.402698283 3.0E+00 1.8E+00
75-01-4 Vinyl Chloride 1.136549469 1.136549469 1.136549469 2.8E+00 7.0E+01
Cumulative: 3.6E-08 4.5E-05
Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals.
DSCA Indoor Air Risk Calculator - Cumulative Risk for Non-Residential Worker
Version 11, July 2023
DC510004
Barrett's Cleaners, 261 NC Hwy 42 E, Clayton, NC
Barrett's Cleaners, 261 NC Hwy 42 E, Clayton, NC
DSCA ID No:
Name/Address of DSCA Site:
Name/Address of Sampling Location:
Sampling Date:10/19/2023
Sample ID:MW-4
Average Groundwater Temperature (°C):25 (Use default of 25⁰C unless site-specific data is available confirming the groundwater temperature during worst-case summer conditions.)
CAS # Chemical Name:
Groundwater
Concentration
(ug/L)
Henry's Constant
at 25°C
(dimensionless)
Temperature
Adjusted Henry's
Constant
(dimensionless)
Henry's Constant
used for
calculations
(dimensionless)
Calculated
Indoor Air
Concentration
(ug/m3)
Indoor Air
Screening Level
for Carcinogens
@ TCR = 1E-06
Indoor Air
Screening Level
for Non-
Carcinogens @
THQ = 0.2
Calculated
Carcinogenic Risk
Calculated Non-
Carcinogenic
Hazard Quotient
71-43-2 Benzene 0.202 0.226901063 0.226901063 0.226901063 4.6E-02 3.6E-01 6.3E+00 1.3E-07 1.5E-03
156-59-2 Dichloroethylene, cis-1,2-0.166802944 0.166802944 0.166802944 -8.3E+00
156-60-5 Dichloroethylene, trans-1,2-0.383483238 0.383483238 0.383483238 -8.3E+00
127-18-4 Tetrachloroethylene 1.13 0.723630417 0.723630417 0.723630417 8.2E-01 1.1E+01 8.3E+00 7.6E-08 2.0E-02
79-01-6 Trichloroethylene 0.402698283 0.402698283 0.402698283 4.8E-01 4.2E-01
75-01-4 Vinyl Chloride 1.136549469 1.136549469 1.136549469 1.7E-01 1.7E+01
Cumulative: 2.0E-07 2.1E-02
Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals.
DSCA Indoor Air Risk Calculator - Cumulative Risk for Resident
Version 11, July 2023
DC510004
Barrett's Cleaners, 261 NC Hwy 42 E, Clayton, NC
NC Hwy 42 E ROW, Clayton, NC
DSCA ID No:
Name/Address of DSCA Site:
Name/Address of Sampling Location:
Sampling Date:10/19/2023
Sample ID:MW-4
Average Groundwater Temperature (°C):25 (Use default of 25⁰C unless site-specific data is available confirming the groundwater temperature during worst-case summer conditions.)
CAS # Chemical Name:
Groundwater
Concentration
(ug/L)
Henry's Constant
at 25°
(dimensionless)
Temperature
Adjusted Henry's
Constant
(dimensionless)
Henry's Constant
used for
calculations
(dimensionless)
Calculated Indoor
Air Concentration
(ug/m3)
Indoor Air
Screening Level
for Carcinogens
@ TCR = 1E-06
Indoor Air
Screening Level
for Non-
Carcinogens @
THQ = 0.2
Calculated
Carcinogenic Risk
Calculated Non-
Carcinogenic
Hazard Quotient
71-43-2 Benzene 0.202 0.226901063 0.226901063 0.226901063 4.6E-02 1.6E+00 2.6E+01 2.9E-08 3.5E-04
156-59-2 Dichloroethylene, cis-1,2-0.166802944 0.166802944 0.166802944 -3.5E+01
156-60-5 Dichloroethylene, trans-1,2-0.383483238 0.383483238 0.383483238 -3.5E+01
127-18-4 Tetrachloroethylene 1.13 0.723630417 0.723630417 0.723630417 8.2E-01 4.7E+01 3.5E+01 1.7E-08 4.7E-03
79-01-6 Trichloroethylene 0.402698283 0.402698283 0.402698283 3.0E+00 1.8E+00
75-01-4 Vinyl Chloride 1.136549469 1.136549469 1.136549469 2.8E+00 7.0E+01
Cumulative: 4.6E-08 5.0E-03
Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals.
DSCA Indoor Air Risk Calculator - Cumulative Risk for Non-Residential Worker
Version 11, July 2023
DC510004
Barrett's Cleaners, 261 NC Hwy 42 E, Clayton, NC
NC Hwy 42 E ROW, Clayton, NC
DSCA ID No:
Name/Address of DSCA Site:
Name/Address of Sampling Location:
Sampling Date:1/19/2024
Sample ID:MW-1
Average Groundwater Temperature (°C):25 (Use default of 25⁰C unless site-specific data is available confirming the groundwater temperature during worst-case summer conditions.)
CAS # Chemical Name:
Groundwater
Concentration
(ug/L)
Henry's Constant
at 25°C
(dimensionless)
Temperature
Adjusted Henry's
Constant
(dimensionless)
Henry's Constant
used for
calculations
(dimensionless)
Calculated
Indoor Air
Concentration
(ug/m3)
Indoor Air
Screening Level
for Carcinogens
@ TCR = 1E-06
Indoor Air
Screening Level
for Non-
Carcinogens @
THQ = 0.2
Calculated
Carcinogenic Risk
Calculated Non-
Carcinogenic
Hazard Quotient
67-66-3 Chloroform 0.184 0.150040883 0.150040883 0.150040883 2.8E-02 1.2E-01 2.0E+01 2.3E-07 2.7E-04
156-59-2 Dichloroethylene, cis-1,2-0.166802944 0.166802944 0.166802944 -8.3E+00
156-60-5 Dichloroethylene, trans-1,2-0.383483238 0.383483238 0.383483238 -8.3E+00
127-18-4 Tetrachloroethylene 4.96 0.723630417 0.723630417 0.723630417 3.6E+00 1.1E+01 8.3E+00 3.3E-07 8.6E-02
79-01-6 Trichloroethylene 0.402698283 0.402698283 0.402698283 4.8E-01 4.2E-01
75-01-4 Vinyl Chloride 1.136549469 1.136549469 1.136549469 1.7E-01 1.7E+01
Cumulative: 5.6E-07 8.6E-02
Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals.
DSCA Indoor Air Risk Calculator - Cumulative Risk for Resident
Version 11, July 2023
DC510004
Barrett's Cleaners, 261 NC Hwy 42 E, Clayton, NC
Barrett's Cleaners, 261 NC Hwy 42 E, Clayton, NC
DSCA ID No:
Name/Address of DSCA Site:
Name/Address of Sampling Location:
Sampling Date:1/19/2024
Sample ID:MW-1
Average Groundwater Temperature (°C):25 (Use default of 25⁰C unless site-specific data is available confirming the groundwater temperature during worst-case summer conditions.)
CAS # Chemical Name:
Groundwater
Concentration
(ug/L)
Henry's Constant
at 25°
(dimensionless)
Temperature
Adjusted Henry's
Constant
(dimensionless)
Henry's Constant
used for
calculations
(dimensionless)
Calculated Indoor
Air Concentration
(ug/m3)
Indoor Air
Screening Level
for Carcinogens
@ TCR = 1E-06
Indoor Air
Screening Level
for Non-
Carcinogens @
THQ = 0.2
Calculated
Carcinogenic Risk
Calculated Non-
Carcinogenic
Hazard Quotient
67-66-3 Chloroform 0.184 0.150040883 0.150040883 0.150040883 2.8E-02 5.3E-01 8.6E+01 5.2E-08 6.4E-05
156-59-2 Dichloroethylene, cis-1,2-0.166802944 0.166802944 0.166802944 -3.5E+01
156-60-5 Dichloroethylene, trans-1,2-0.383483238 0.383483238 0.383483238 -3.5E+01
127-18-4 Tetrachloroethylene 4.96 0.723630417 0.723630417 0.723630417 3.6E+00 4.7E+01 3.5E+01 7.6E-08 2.0E-02
79-01-6 Trichloroethylene 0.402698283 0.402698283 0.402698283 3.0E+00 1.8E+00
75-01-4 Vinyl Chloride 1.136549469 1.136549469 1.136549469 2.8E+00 7.0E+01
Cumulative: 1.3E-07 2.1E-02
Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals.
DSCA Indoor Air Risk Calculator - Cumulative Risk for Non-Residential Worker
Version 11, July 2023
DC510004
Barrett's Cleaners, 261 NC Hwy 42 E, Clayton, NC
Barrett's Cleaners, 261 NC Hwy 42 E, Clayton, NC
DSCA ID No:
Name/Address of DSCA Site:
Name/Address of Sampling Location:
Sampling Date:1/19/2024
Sample ID:MW-2
Average Groundwater Temperature (°C):25 (Use default of 25⁰C unless site-specific data is available confirming the groundwater temperature during worst-case summer conditions.)
CAS # Chemical Name:
Groundwater
Concentration
(ug/L)
Henry's Constant
at 25°C
(dimensionless)
Temperature
Adjusted Henry's
Constant
(dimensionless)
Henry's Constant
used for
calculations
(dimensionless)
Calculated
Indoor Air
Concentration
(ug/m3)
Indoor Air
Screening Level
for Carcinogens
@ TCR = 1E-06
Indoor Air
Screening Level
for Non-
Carcinogens @
THQ = 0.2
Calculated
Carcinogenic Risk
Calculated Non-
Carcinogenic
Hazard Quotient
71-43-2 Benzene 0.226901063 0.226901063 0.226901063 3.6E-01 6.3E+00
75-27-4 Bromodichloromethane 0.245 0.086672118 0.086672118 0.086672118 2.1E-02 7.6E-02 -2.8E-07
67-66-3 Chloroform 2.31 0.150040883 0.150040883 0.150040883 3.5E-01 1.2E-01 2.0E+01 2.8E-06 3.4E-03
110-57-6 Dichloro-2-butene, trans-1,4-1.94 0.027146361 0.027146361 0.027146361 5.3E-02 6.7E-04 -7.9E-05
156-59-2 Dichloroethylene, cis-1,2-7.8 0.166802944 0.166802944 0.166802944 1.3E+00 -8.3E+00 3.1E-02
156-60-5 Dichloroethylene, trans-1,2-0.383483238 0.383483238 0.383483238 -8.3E+00
127-18-4 Tetrachloroethylene 983 0.723630417 0.723630417 0.723630417 7.1E+02 1.1E+01 8.3E+00 6.6E-05 1.7E+01
79-01-6 Trichloroethylene 32.2 0.402698283 0.402698283 0.402698283 1.3E+01 4.8E-01 4.2E-01 2.7E-05 6.2E+00
75-01-4 Vinyl Chloride 1.136549469 1.136549469 1.136549469 1.7E-01 1.7E+01
Cumulative: 1.7E-04 2.3E+01
Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals.
DSCA Indoor Air Risk Calculator - Cumulative Risk for Resident
Version 11, July 2023
DC510004
Barrett's Cleaners, 261 NC Hwy 42 E, Clayton, NC
Barrett's Cleaners, 261 NC Hwy 42 E, Clayton, NC
DSCA ID No:
Name/Address of DSCA Site:
Name/Address of Sampling Location:
Sampling Date:1/19/2024
Sample ID:MW-2
Average Groundwater Temperature (°C):25 (Use default of 25⁰C unless site-specific data is available confirming the groundwater temperature during worst-case summer conditions.)
CAS # Chemical Name:
Groundwater
Concentration
(ug/L)
Henry's Constant
at 25°
(dimensionless)
Temperature
Adjusted Henry's
Constant
(dimensionless)
Henry's Constant
used for
calculations
(dimensionless)
Calculated Indoor
Air Concentration
(ug/m3)
Indoor Air
Screening Level
for Carcinogens
@ TCR = 1E-06
Indoor Air
Screening Level
for Non-
Carcinogens @
THQ = 0.2
Calculated
Carcinogenic Risk
Calculated Non-
Carcinogenic
Hazard Quotient
71-43-2 Benzene 0.226901063 0.226901063 0.226901063 1.6E+00 2.6E+01
75-27-4 Bromodichloromethane 0.245 0.086672118 0.086672118 0.086672118 2.1E-02 3.3E-01 -6.4E-08
67-66-3 Chloroform 2.31 0.150040883 0.150040883 0.150040883 3.5E-01 5.3E-01 8.6E+01 6.5E-07 8.1E-04
110-57-6 Dichloro-2-butene, trans-1,4-1.94 0.027146361 0.027146361 0.027146361 5.3E-02 2.9E-03 -1.8E-05
156-59-2 Dichloroethylene, cis-1,2-7.8 0.166802944 0.166802944 0.166802944 1.3E+00 -3.5E+01 7.4E-03
156-60-5 Dichloroethylene, trans-1,2-0.383483238 0.383483238 0.383483238 -3.5E+01
127-18-4 Tetrachloroethylene 983 0.723630417 0.723630417 0.723630417 7.1E+02 4.7E+01 3.5E+01 1.5E-05 4.1E+00
79-01-6 Trichloroethylene 32.2 0.402698283 0.402698283 0.402698283 1.3E+01 3.0E+00 1.8E+00 4.3E-06 1.5E+00
75-01-4 Vinyl Chloride 1.136549469 1.136549469 1.136549469 2.8E+00 7.0E+01
Cumulative: 3.8E-05 5.5E+00
Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals.
DSCA Indoor Air Risk Calculator - Cumulative Risk for Non-Residential Worker
Version 11, July 2023
DC510004
Barrett's Cleaners, 261 NC Hwy 42 E, Clayton, NC
Barrett's Cleaners, 261 NC Hwy 42 E, Clayton, NC
DSCA ID No:
Name/Address of DSCA Site:
Name/Address of Sampling Location:
Sampling Date:1/19/2024
Sample ID:MW-3
Average Groundwater Temperature (°C):25 (Use default of 25⁰C unless site-specific data is available confirming the groundwater temperature during worst-case summer conditions.)
CAS # Chemical Name:
Groundwater
Concentration
(ug/L)
Henry's Constant
at 25°C
(dimensionless)
Temperature
Adjusted Henry's
Constant
(dimensionless)
Henry's Constant
used for
calculations
(dimensionless)
Calculated
Indoor Air
Concentration
(ug/m3)
Indoor Air
Screening Level
for Carcinogens
@ TCR = 1E-06
Indoor Air
Screening Level
for Non-
Carcinogens @
THQ = 0.2
Calculated
Carcinogenic Risk
Calculated Non-
Carcinogenic
Hazard Quotient
67-66-3 Chloroform 0.18 0.150040883 0.150040883 0.150040883 2.7E-02 1.2E-01 2.0E+01 2.2E-07 2.6E-04
156-59-2 Dichloroethylene, cis-1,2-0.166802944 0.166802944 0.166802944 -8.3E+00
156-60-5 Dichloroethylene, trans-1,2-0.383483238 0.383483238 0.383483238 -8.3E+00
127-18-4 Tetrachloroethylene 2.32 0.723630417 0.723630417 0.723630417 1.7E+00 1.1E+01 8.3E+00 1.6E-07 4.0E-02
79-01-6 Trichloroethylene 0.402698283 0.402698283 0.402698283 4.8E-01 4.2E-01
75-01-4 Vinyl Chloride 1.136549469 1.136549469 1.136549469 1.7E-01 1.7E+01
Cumulative: 3.8E-07 4.1E-02
Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals.
DSCA Indoor Air Risk Calculator - Cumulative Risk for Resident
Version 11, July 2023
DC510004
Barrett's Cleaners, 261 NC Hwy 42 E, Clayton, NC
Barrett's Cleaners, 261 NC Hwy 42 E, Clayton, NC
DSCA ID No:
Name/Address of DSCA Site:
Name/Address of Sampling Location:
Sampling Date:1/19/2024
Sample ID:MW-3
Average Groundwater Temperature (°C):25 (Use default of 25⁰C unless site-specific data is available confirming the groundwater temperature during worst-case summer conditions.)
CAS # Chemical Name:
Groundwater
Concentration
(ug/L)
Henry's Constant
at 25°
(dimensionless)
Temperature
Adjusted Henry's
Constant
(dimensionless)
Henry's Constant
used for
calculations
(dimensionless)
Calculated Indoor
Air Concentration
(ug/m3)
Indoor Air
Screening Level
for Carcinogens
@ TCR = 1E-06
Indoor Air
Screening Level
for Non-
Carcinogens @
THQ = 0.2
Calculated
Carcinogenic Risk
Calculated Non-
Carcinogenic
Hazard Quotient
67-66-3 Chloroform 0.18 0.150040883 0.150040883 0.150040883 2.7E-02 5.3E-01 8.6E+01 5.1E-08 6.3E-05
156-59-2 Dichloroethylene, cis-1,2-0.166802944 0.166802944 0.166802944 -3.5E+01
156-60-5 Dichloroethylene, trans-1,2-0.383483238 0.383483238 0.383483238 -3.5E+01
127-18-4 Tetrachloroethylene 2.32 0.723630417 0.723630417 0.723630417 1.7E+00 4.7E+01 3.5E+01 3.6E-08 9.6E-03
79-01-6 Trichloroethylene 0.402698283 0.402698283 0.402698283 3.0E+00 1.8E+00
75-01-4 Vinyl Chloride 1.136549469 1.136549469 1.136549469 2.8E+00 7.0E+01
Cumulative: 8.6E-08 9.6E-03
Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals.
DSCA Indoor Air Risk Calculator - Cumulative Risk for Non-Residential Worker
Version 11, July 2023
DC510004
Barrett's Cleaners, 261 NC Hwy 42 E, Clayton, NC
Barrett's Cleaners, 261 NC Hwy 42 E, Clayton, NC
DSCA ID No:
Name/Address of DSCA Site:
Name/Address of Sampling Location:
Sampling Date:1/19/2024
Sample ID:MW-4
Average Groundwater Temperature (°C):25 (Use default of 25⁰C unless site-specific data is available confirming the groundwater temperature during worst-case summer conditions.)
CAS # Chemical Name:
Groundwater
Concentration
(ug/L)
Henry's Constant
at 25°C
(dimensionless)
Temperature
Adjusted Henry's
Constant
(dimensionless)
Henry's Constant
used for
calculations
(dimensionless)
Calculated
Indoor Air
Concentration
(ug/m3)
Indoor Air
Screening Level
for Carcinogens
@ TCR = 1E-06
Indoor Air
Screening Level
for Non-
Carcinogens @
THQ = 0.2
Calculated
Carcinogenic Risk
Calculated Non-
Carcinogenic
Hazard Quotient
75-27-4 Bromodichloromethane 0.086672118 0.086672118 0.086672118 7.6E-02 -
75-15-0 Carbon Disulfide 0.171 0.588716271 0.588716271 0.588716271 1.0E-01 -1.5E+02 1.4E-04
67-66-3 Chloroform 0.150040883 0.150040883 0.150040883 1.2E-01 2.0E+01
110-57-6 Dichloro-2-butene, trans-1,4-1.92 0.027146361 0.027146361 0.027146361 5.2E-02 6.7E-04 -7.8E-05
156-59-2 Dichloroethylene, cis-1,2-0.166802944 0.166802944 0.166802944 -8.3E+00
127-18-4 Tetrachloroethylene 0.723630417 0.723630417 0.723630417 1.1E+01 8.3E+00
79-01-6 Trichloroethylene 0.402698283 0.402698283 0.402698283 4.8E-01 4.2E-01
75-01-4 Vinyl Chloride 1.136549469 1.136549469 1.136549469 1.7E-01 1.7E+01
Cumulative: 7.8E-05 1.4E-04
Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals.
DSCA Indoor Air Risk Calculator - Cumulative Risk for Resident
Version 11, July 2023
DC510004
Barrett's Cleaners, 261 NC Hwy 42 E, Clayton, NC
NC Hwy 42 E ROW, Clayton, NC
DSCA ID No:
Name/Address of DSCA Site:
Name/Address of Sampling Location:
Sampling Date:1/19/2024
Sample ID:MW-4
Average Groundwater Temperature (°C):25 (Use default of 25⁰C unless site-specific data is available confirming the groundwater temperature during worst-case summer conditions.)
CAS # Chemical Name:
Groundwater
Concentration
(ug/L)
Henry's Constant
at 25°
(dimensionless)
Temperature
Adjusted Henry's
Constant
(dimensionless)
Henry's Constant
used for
calculations
(dimensionless)
Calculated Indoor
Air Concentration
(ug/m3)
Indoor Air
Screening Level
for Carcinogens
@ TCR = 1E-06
Indoor Air
Screening Level
for Non-
Carcinogens @
THQ = 0.2
Calculated
Carcinogenic Risk
Calculated Non-
Carcinogenic
Hazard Quotient
75-27-4 Bromodichloromethane 0.086672118 0.086672118 0.086672118 3.3E-01 -
75-15-0 Carbon Disulfide 0.171 0.588716271 0.588716271 0.588716271 1.0E-01 -6.1E+02 3.3E-05
67-66-3 Chloroform 0.150040883 0.150040883 0.150040883 5.3E-01 8.6E+01
110-57-6 Dichloro-2-butene, trans-1,4-1.92 0.027146361 0.027146361 0.027146361 5.2E-02 2.9E-03 -1.8E-05
156-59-2 Dichloroethylene, cis-1,2-0.166802944 0.166802944 0.166802944 -3.5E+01
127-18-4 Tetrachloroethylene 0.723630417 0.723630417 0.723630417 4.7E+01 3.5E+01
79-01-6 Trichloroethylene 0.402698283 0.402698283 0.402698283 3.0E+00 1.8E+00
75-01-4 Vinyl Chloride 1.136549469 1.136549469 1.136549469 2.8E+00 7.0E+01
Cumulative: 1.8E-05 3.3E-05
Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals.
DSCA Indoor Air Risk Calculator - Cumulative Risk for Non-Residential Worker
Version 11, July 2023
DC510004
Barrett's Cleaners, 261 NC Hwy 42 E, Clayton, NC
NC Hwy 42 E ROW, Clayton, NC
DSCA ID No:
Name/Address of DSCA Site:
Name/Address of Sampling Location:
Sampling Date:1/19/2024
Sample ID:MW-5
Average Groundwater Temperature (°C):25 (Use default of 25⁰C unless site-specific data is available confirming the groundwater temperature during worst-case summer conditions.)
CAS # Chemical Name:
Groundwater
Concentration
(ug/L)
Henry's Constant
at 25°C
(dimensionless)
Temperature
Adjusted Henry's
Constant
(dimensionless)
Henry's Constant
used for
calculations
(dimensionless)
Calculated
Indoor Air
Concentration
(ug/m3)
Indoor Air
Screening Level
for Carcinogens
@ TCR = 1E-06
Indoor Air
Screening Level
for Non-
Carcinogens @
THQ = 0.2
Calculated
Carcinogenic Risk
Calculated Non-
Carcinogenic
Hazard Quotient
67-66-3 Chloroform 0.150040883 0.150040883 0.150040883 1.2E-01 2.0E+01
110-57-6 Dichloro-2-butene, trans-1,4-1.98 0.027146361 0.027146361 0.027146361 5.4E-02 6.7E-04 -8.0E-05
156-59-2 Dichloroethylene, cis-1,2-0.166802944 0.166802944 0.166802944 -8.3E+00
127-18-4 Tetrachloroethylene 0.723630417 0.723630417 0.723630417 1.1E+01 8.3E+00
79-01-6 Trichloroethylene 0.402698283 0.402698283 0.402698283 4.8E-01 4.2E-01
75-01-4 Vinyl Chloride 1.136549469 1.136549469 1.136549469 1.7E-01 1.7E+01
Cumulative: 8.0E-05 0.0E+00
Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals.
DSCA Indoor Air Risk Calculator - Cumulative Risk for Resident
Version 11, July 2023
DC510004
Barrett's Cleaners, 261 NC Hwy 42 E, Clayton, NC
Barrett's Cleaners, 261 NC Hwy 42 E, Clayton, NC
DSCA ID No:
Name/Address of DSCA Site:
Name/Address of Sampling Location:
Sampling Date:1/19/2024
Sample ID:MW-5
Average Groundwater Temperature (°C):25 (Use default of 25⁰C unless site-specific data is available confirming the groundwater temperature during worst-case summer conditions.)
CAS # Chemical Name:
Groundwater
Concentration
(ug/L)
Henry's Constant
at 25°
(dimensionless)
Temperature
Adjusted Henry's
Constant
(dimensionless)
Henry's Constant
used for
calculations
(dimensionless)
Calculated Indoor
Air Concentration
(ug/m3)
Indoor Air
Screening Level
for Carcinogens
@ TCR = 1E-06
Indoor Air
Screening Level
for Non-
Carcinogens @
THQ = 0.2
Calculated
Carcinogenic Risk
Calculated Non-
Carcinogenic
Hazard Quotient
67-66-3 Chloroform 0.150040883 0.150040883 0.150040883 5.3E-01 8.6E+01
110-57-6 Dichloro-2-butene, trans-1,4-1.98 0.027146361 0.027146361 0.027146361 5.4E-02 2.9E-03 -1.8E-05
156-59-2 Dichloroethylene, cis-1,2-0.166802944 0.166802944 0.166802944 -3.5E+01
127-18-4 Tetrachloroethylene 0.723630417 0.723630417 0.723630417 4.7E+01 3.5E+01
79-01-6 Trichloroethylene 0.402698283 0.402698283 0.402698283 3.0E+00 1.8E+00
75-01-4 Vinyl Chloride 1.136549469 1.136549469 1.136549469 2.8E+00 7.0E+01
Cumulative: 1.8E-05 0.0E+00
Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals.
DSCA Indoor Air Risk Calculator - Cumulative Risk for Non-Residential Worker
Version 11, July 2023
DC510004
Barrett's Cleaners, 261 NC Hwy 42 E, Clayton, NC
Barrett's Cleaners, 261 NC Hwy 42 E, Clayton, NC
DSCA ID No:
Name/Address of DSCA Site:
Name/Address of Sampling Location:
Sampling Date:4/24/2024
Sample ID:MW-1
Average Groundwater Temperature (°C):25 (Use default of 25⁰C unless site-specific data is available confirming the groundwater temperature during worst-case summer conditions.)
CAS # Chemical Name:
Groundwater
Concentration
(ug/L)
Henry's Constant
at 25°C
(dimensionless)
Temperature
Adjusted Henry's
Constant
(dimensionless)
Henry's Constant
used for
calculations
(dimensionless)
Calculated
Indoor Air
Concentration
(ug/m3)
Indoor Air
Screening Level
for Carcinogens
@ TCR = 1E-06
Indoor Air
Screening Level
for Non-
Carcinogens @
THQ = 0.2
Calculated
Carcinogenic Risk
Calculated Non-
Carcinogenic
Hazard Quotient
67-66-3 Chloroform 0.150040883 0.150040883 0.150040883 1.2E-01 2.0E+01
156-59-2 Dichloroethylene, cis-1,2-0.166802944 0.166802944 0.166802944 -8.3E+00
156-60-5 Dichloroethylene, trans-1,2-0.383483238 0.383483238 0.383483238 -8.3E+00
127-18-4 Tetrachloroethylene 17.7 0.723630417 0.723630417 0.723630417 1.3E+01 1.1E+01 8.3E+00 1.2E-06 3.1E-01
79-01-6 Trichloroethylene 0.402698283 0.402698283 0.402698283 4.8E-01 4.2E-01
75-01-4 Vinyl Chloride 1.136549469 1.136549469 1.136549469 1.7E-01 1.7E+01
Cumulative: 1.2E-06 3.1E-01
Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals.
DSCA Indoor Air Risk Calculator - Cumulative Risk for Resident
Version 11, July 2023
DC510004
Barrett's Cleaners, 261 NC Hwy 42 E, Clayton, NC
Barrett's Cleaners, 261 NC Hwy 42 E, Clayton, NC
DSCA ID No:
Name/Address of DSCA Site:
Name/Address of Sampling Location:
Sampling Date:4/24/2024
Sample ID:MW-1
Average Groundwater Temperature (°C):25 (Use default of 25⁰C unless site-specific data is available confirming the groundwater temperature during worst-case summer conditions.)
CAS # Chemical Name:
Groundwater
Concentration
(ug/L)
Henry's Constant
at 25°
(dimensionless)
Temperature
Adjusted Henry's
Constant
(dimensionless)
Henry's Constant
used for
calculations
(dimensionless)
Calculated Indoor
Air Concentration
(ug/m3)
Indoor Air
Screening Level
for Carcinogens
@ TCR = 1E-06
Indoor Air
Screening Level
for Non-
Carcinogens @
THQ = 0.2
Calculated
Carcinogenic Risk
Calculated Non-
Carcinogenic
Hazard Quotient
67-66-3 Chloroform 0.150040883 0.150040883 0.150040883 5.3E-01 8.6E+01
156-59-2 Dichloroethylene, cis-1,2-0.166802944 0.166802944 0.166802944 -3.5E+01
156-60-5 Dichloroethylene, trans-1,2-0.383483238 0.383483238 0.383483238 -3.5E+01
127-18-4 Tetrachloroethylene 17.7 0.723630417 0.723630417 0.723630417 1.3E+01 4.7E+01 3.5E+01 2.7E-07 7.3E-02
79-01-6 Trichloroethylene 0.402698283 0.402698283 0.402698283 3.0E+00 1.8E+00
75-01-4 Vinyl Chloride 1.136549469 1.136549469 1.136549469 2.8E+00 7.0E+01
Cumulative: 2.7E-07 7.3E-02
Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals.
DSCA Indoor Air Risk Calculator - Cumulative Risk for Non-Residential Worker
Version 11, July 2023
DC510004
Barrett's Cleaners, 261 NC Hwy 42 E, Clayton, NC
Barrett's Cleaners, 261 NC Hwy 42 E, Clayton, NC
DSCA ID No:
Name/Address of DSCA Site:
Name/Address of Sampling Location:
Sampling Date:4/24/2024
Sample ID:MW-2
Average Groundwater Temperature (°C):25 (Use default of 25⁰C unless site-specific data is available confirming the groundwater temperature during worst-case summer conditions.)
CAS # Chemical Name:
Groundwater
Concentration
(ug/L)
Henry's Constant
at 25°C
(dimensionless)
Temperature
Adjusted Henry's
Constant
(dimensionless)
Henry's Constant
used for
calculations
(dimensionless)
Calculated
Indoor Air
Concentration
(ug/m3)
Indoor Air
Screening Level
for Carcinogens
@ TCR = 1E-06
Indoor Air
Screening Level
for Non-
Carcinogens @
THQ = 0.2
Calculated
Carcinogenic Risk
Calculated Non-
Carcinogenic
Hazard Quotient
71-43-2 Benzene 0.226901063 0.226901063 0.226901063 3.6E-01 6.3E+00
75-27-4 Bromodichloromethane 0.086672118 0.086672118 0.086672118 7.6E-02 -
67-66-3 Chloroform 0.150040883 0.150040883 0.150040883 1.2E-01 2.0E+01
156-59-2 Dichloroethylene, cis-1,2-8 0.166802944 0.166802944 0.166802944 1.3E+00 -8.3E+00 3.2E-02
156-60-5 Dichloroethylene, trans-1,2-0.383483238 0.383483238 0.383483238 -8.3E+00
127-18-4 Tetrachloroethylene 603 0.723630417 0.723630417 0.723630417 4.4E+02 1.1E+01 8.3E+00 4.0E-05 1.0E+01
79-01-6 Trichloroethylene 27.8 0.402698283 0.402698283 0.402698283 1.1E+01 4.8E-01 4.2E-01 2.3E-05 5.4E+00
75-01-4 Vinyl Chloride 1.136549469 1.136549469 1.136549469 1.7E-01 1.7E+01
Cumulative: 6.4E-05 1.6E+01
Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals.
DSCA Indoor Air Risk Calculator - Cumulative Risk for Resident
Version 11, July 2023
DC510004
Barrett's Cleaners, 261 NC Hwy 42 E, Clayton, NC
Barrett's Cleaners, 261 NC Hwy 42 E, Clayton, NC
DSCA ID No:
Name/Address of DSCA Site:
Name/Address of Sampling Location:
Sampling Date:4/24/2024
Sample ID:MW-2
Average Groundwater Temperature (°C):25 (Use default of 25⁰C unless site-specific data is available confirming the groundwater temperature during worst-case summer conditions.)
CAS # Chemical Name:
Groundwater
Concentration
(ug/L)
Henry's Constant
at 25°
(dimensionless)
Temperature
Adjusted Henry's
Constant
(dimensionless)
Henry's Constant
used for
calculations
(dimensionless)
Calculated Indoor
Air Concentration
(ug/m3)
Indoor Air
Screening Level
for Carcinogens
@ TCR = 1E-06
Indoor Air
Screening Level
for Non-
Carcinogens @
THQ = 0.2
Calculated
Carcinogenic Risk
Calculated Non-
Carcinogenic
Hazard Quotient
71-43-2 Benzene 0.226901063 0.226901063 0.226901063 1.6E+00 2.6E+01
75-27-4 Bromodichloromethane 0.086672118 0.086672118 0.086672118 3.3E-01 -
67-66-3 Chloroform 0.150040883 0.150040883 0.150040883 5.3E-01 8.6E+01
156-59-2 Dichloroethylene, cis-1,2-8 0.166802944 0.166802944 0.166802944 1.3E+00 -3.5E+01 7.6E-03
156-60-5 Dichloroethylene, trans-1,2-0.383483238 0.383483238 0.383483238 -3.5E+01
127-18-4 Tetrachloroethylene 603 0.723630417 0.723630417 0.723630417 4.4E+02 4.7E+01 3.5E+01 9.3E-06 2.5E+00
79-01-6 Trichloroethylene 27.8 0.402698283 0.402698283 0.402698283 1.1E+01 3.0E+00 1.8E+00 3.7E-06 1.3E+00
75-01-4 Vinyl Chloride 1.136549469 1.136549469 1.136549469 2.8E+00 7.0E+01
Cumulative: 1.3E-05 3.8E+00
Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals.
DSCA Indoor Air Risk Calculator - Cumulative Risk for Non-Residential Worker
Version 11, July 2023
DC510004
Barrett's Cleaners, 261 NC Hwy 42 E, Clayton, NC
Barrett's Cleaners, 261 NC Hwy 42 E, Clayton, NC

APPENDIX D
DSCA GROUNDWATER MONITORING REPORT FORMS
DSCA ID No.:
Submittal Date:
Reporting Period:to
Type of Report:One-Time Event Quaterly
Semi-Annual Annual
DC510004
19-Oct-23 24-Apr-24
Groundwater Monitoring Report Forms
for
North Carolina Dry-Cleaning Solvent Cleanup Act Program
Prepared By:
Facility Name:Barrett's Cleaners
261 NC Highway 42 East, Clayton, Johnston County, North Carolina
5438 Wade Park Boulevard, Suite 200, Raleigh, NC 27607
AECOM Technical Services of North Carolina, Inc.
May 2024
Table of Contents
DSCA ID No.: DC510004
Form/Att
. No.
Check box
if included
Form 1 Report Summary
Form 2 Quality Assurance/Quality Control Procedures
Form 3 Results, Conclusions and Recommendations
Att. 1
Att. 2
Att. 3
Att. 4
Att. 5
GWMR TOC
Description
Grooundwater Monitoring Report Attachments
Groundwater Monitoring Report Forms
GSI Mann-Kendall Toolkit - PCE Trend Analysis
Disposal of IDW receipts from receiving facilities, or any required hazardous waste
Report Summary
DSCA ID No.: DC510004
Dates samples were collected:
Number of existing monitoring wells:
List the sampled monitoring wells:
List the sampled water supply wells:
List surface water samples collected:
Date analyses were performed:
Were any holding times exceeded?
Dates monitoring/supply wells were gauged:
disposal?
Average depth to groundwater:
Groundwater flow direction:
Was the static groundwater level above the top of the well screen in any wells?
If Yes, indicate which wells:
Is the aquifer:
Were any existing monitoring wells damaged?
If Yes, indicate which wells:
Has the groundwater plume been defined?
Any ongoing assessment activities?
If Yes, provide details in the space below:
Any ongoing remediation activites?
If Yes, provide details in the space below:
Any significant changes in the subsurface conditions?
If Yes, provide details in the space below:
10/19/2024, 1/19/2024, & 4/24/2024
Southeast
MW-1, MW-2, MW-4, & MW-5
No water supply wells were sampled during the reporting period.
GWMR Form 1
Groundwater has not been delineated vertically, and PCE concentrations in both MW-3 and MW-4 have
exceeded the 2L Standard intermittently. A deep well in the area of MW-2 and downgradient surface water
assessment is recommended.
No surface water samples were collected during the
reporting period.
9.86 feet below top of casing
10/19/2024, 1/19/2024, & 4/24/2024
5
MW-1 through MW-5
10/25-26/2023, 1/23-25/2024, & 5/1-2/2024
Does investigation derived waste (IDW) generated during these activities still remain at the site pending
Yes No
Yes No
Confined Unconfined Perched
Yes No
Yes No
Yes No
Yes No
Yes No
Yes No
Quality Assurance/Quality Control Procedures
DSCA ID No.: DC510004
Describe the specific sampling technicque employed during the collection of all ground water samples.
Samples were analyzed by USEPA Method 8260D for volatile organic compounds (VOCs). All samples were
analyzed within the EPA-established holding time of 14 days for preserved samples.
GWMR Form 2
Describe the standard quality assurance/quality control (QA/QC) procedures which are practiced in order to
ensure that the samples are representative of actual conditions and that analytical results are valid.
Describe the EPA approved methods used to extract and analyze the samples submitted the laboratory.
Reference the maximum holding time for each type of analysis performed.
The data review process involved the evaluation of blank contamination, data anomalies, and a completeness
check. An evaluation of blank contamination was conducted using a process that is modeled after the USEPA
Contract Laboratory Program National Functional Guidelines for Organic Data Review (US EPA, June 2008).
Laboratory blanks were used to ensure that investigative samples were not contaminated during sample
preparation and analysis. Data anomolies were not found upon comparison of sample results to field
measurements and historical analytical data. The laboratory report was reviewed for contract completeness. The
laboratory provided results for all required volatile organic compounds (VOC). In addition, sample results were
reported to the method detection limit (MDL), and results that were greater than the MDL, but less than the
practical quantitation limit, were reported by the laboratory with a J-flag. A summary of laboratory quality
control (QC) results (e.g., method blank, LCS, spikes, etc.) and associated control limits were included in the
laboratory report. All data quality issues were addressed by the laboratory in the Case Narrative.
Groundwater levels in site monitoring wells were gauged using a decontaminated electronic water level meter
prior to initiating sampling activities during each quarterly monitoring event (October 2023, January 2024, and
April 2024). Prior to gauging, wells were vented and allowed to equilibrate for approximately one hour. Sample
collection was completed using disposable polyethylene bailers in accordance with AECOM Groundwater
Sampling Using Bailers SOPs . Each groundwater sample was collected into laboratory supplied sample
containers, immediately placed in a cooler on wet ice, and transported under chain of custody to Pace
Analytical (Pace).
Results, Conclusions and Recommendations
DSCA ID No.: DC680005
Sampling
Date Sample ID Concentration
[mg/L]
Sampling
Date Sample ID Concentration
[mg/L]
4/24/2024 MW-2 0.983 1/19/2024 MW-2 0.983
4/24/2024 MW-2 0.0278 1/19/2024 MW-2 0.0322
NA NA ND NA NA ND
4/24/2024 MW-2 0.008 4/24/2024 MW-2 0.008
NA NA ND NA NA ND
According to the DSCA guidance documents, groundwater monitoring must be conducted for a period of time
sufficient to show a reliably consistent trend in COC concentrations. Groundwater quality data to date indicate
the chlorinated COC plume is generally stable in concentration. However, as Mann-Kendall trend analysis
indicates an increasing trend in PCE concentrations in MW-1, PCE concentrations have intermittently
exceeded the 2L Standards in perimeter wells MW-3 and MW-4, and the plume has not been delineated
vertically, additional groundwater assessment and monitoring may be warranted to demonstrate plume
stability.
cis-1,2-DCE
trans-1,2-DCE
Instructions: Discuss any trends or changes noted in analytical results.
Conclusions
Recommendations
Groundwater flows across the site generally toward the southeast. Tetrachloroethene (PCE) has been detected
at concentrations that exceed the NC 2L Standard in monitoring wells MW-1, MW-2, MW-3, and MW-4, as
well as in previous DPT samples (GW-1 and GW-2). Mann-Kendall trend analysis for PCE concentrations
detected in groundwater samples collected from MW-1 and MW-2 from July 2022 through April 2024 indicate
that concentrations are increasing in MW-1, and have no discernible trend in MW-2 over the period of
monitoring. Fluctuations in concentrations between sampling events are likely due to various subsurface
conditions including reductive dechlorination activity and water level changes.
GWMR Form 3
Results
Maximum Concentration Detected in Groundwater
Chemical
Most Recent Event Detected at Site To-date
Tetrachloroethylene
Trichloroethylene
Vinyl Chloride

ATTACHMENT 1
WASTE MANIFESTS

ATTACHMENT 2
MANN-KENDALL TREND ANALYSIS FOR PCE RESULTS

Evaluation Date:Job ID:
Facility Name:Constituent:
Conducted By:Concentration Units:mg/L
Sampling Point ID:MW-1 MW-2
Sampling Sampling
Event Date
1 1-Nov-21 0.0012 0.25
2 19-Jul-22 0.02 0.44
3 19-Oct-23 0.0227 0.606
4 19-Jan-24 0.00496 0.983
5 24-Apr-24 0.0177 0.603
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
Coefficient of Variation:0.88 0.47Mann-Kendall Statistic (S):6 6
Confidence Factor:95.8%88.3%
Concentration Trend:Increasing 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.
GSI Environmental Inc., www.gsi-net.com
PCE CONCENTRATION (mg/L)
14-May-24
Barrett'S Cleaners (DC510004)PCE
GSI MANN-KENDALL TOOLKIT
for Constituent Trend Analysis
S. Hempel
60699512
0.001
0.01
0.1
1
07/21 10/21 02/22 05/22 08/22 12/22 03/23 06/23 10/23 01/24 04/24 07/24
Co
n
c
e
n
t
r
a
t
i
o
n

(
m
g
/
L
)
Sampling Date
MW-2
MW-1