23022_Chapel Hill Police Dept_IRMRPT_20240605

Interim Remedial Measures
Maintenance Report
Chapel Hill Police Property
828 Martin Luther King Jr. Blvd.
Brownfields Project No. 23022-19-068
Chapel Hill, North Carolina
F
H&H Job No. TCH-009
June 5, 2024
hart -.4 hickman
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#C-1269 Engineering
#C-245 Geology
2923 South Tryon Street, Suite 100 3921 Sunset Ridge Rd , Suite 301
Charlotte, NC 28203 Raleigh, NC 27607 www.harthickman.com
704.586.0007 main 919.847.4241 main

Executive Summary
Hart & Hickman, PC (H&H) has prepared this has prepared this Interim Remedial Measures
(IRMs) Maintenance Report for the Chapel Hill Police Property (Brownfields Project No. 23022-
19-068) located at 828 Martin Luther King Jr. Boulevard in Chapel Hill, Orange County, North
Carolina (subject Site or Site). Previous assessment activities indicated that the Site was initially
used as a borrow pit from the late 1950s to early 1960s, and then was used as a fill site by a previous
owner for placement of construction debris and coal combustion products (CCPs) from the mid-
1960s to the mid- 1970s. Fill materials that have been observed at the Site are generally comprised
of construction debris, soil, and CCPs. In the early 1980s, the Town of Chapel Hill (Town)
acquired the property and constructed an approximately 35,000 square foot (sq ft) two-story
building that is currently used for police department operations. The Site consists of an upper level
where the borrow pit was located, which is now occupied by the police department building and
parking areas, and a lower level adjacent to Bolin Creek where the Bolin Creek Trail is located.
Area topography is indicated in Figure 1.
To investigate potential environmental impacts at the Site associated with CCPs, environmental
assessment activities were conducted at the Site from 2013 to 2022. The assessment activities
included collection and laboratory analysis of samples of CCPs, groundwater, sub -slab vapor, soil
gas, soil, sediment, and surface water from the Site.
In 2020, IRMs were implemented which included excavation and off -Site disposal of soil and
exposed CCPs along Bolin Creek Trail, stabilization and cover of exposed CCPs along the
embankment, and temporary measures to address stormwater and erosion control in the area of the
embankment. The Town has proactively monitored the IRMs since their completion. Monitoring
activities have included inspections of on -Site stormwater controls and silt fencing. During an
inspection completed by the Town in January 2024, the following Site conditions were observed:
• Erosion to the storm diversion channel that captures surface water runoff from the police
department parking lot; and
• Suspect shallow (0-6 inches) depositional CCPs located at the base of the embankment.
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Based on the January 2024 inspection, H&H implemented IRM maintenance activities which
included collection of suspect soil/CCP samples for laboratory analysis, repairs to the storm
diversion channel, limited excavation of soil/CCPs at the base of the embankment and placing the
materials behind the silt fence areas, installation of additional silt fencing, hydroseeding, and post-
IRM soil sampling. The Site layout, topography, silt fencing, and estimated area where CCPs are
present at the Site are depicted in Figure 2. The locations of the January 2024 soil borings are
shown on Figure 3.
As detailed in the following sections of this report, H&H concludes that the IRM maintenance
activities have adequately addressed the recently observed depositional soil/CCPs located at the
Site. H&H recommends that the Town continue to conduct inspections of the IRMs and maintain
them as warranted until long term remedial activities are implemented.
ii
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Interim Remedial Measures Maintenance Report
Chapel Hill Police Property
Chapel Hill, North Carolina
H&H Job No. TCH-009
Table of Contents
ExecutiveSummary....................................................................................................................... i
1.0 Introduction.............................................................................................................................1
2.0 Site Background......................................................................................................................2
3.0 Pre -Maintenance Soil/CCP Assessment Activities
...............................................................5
3.1 Soil/CCP Sampling Methodology..........................................................................................5
3.2 Soil/CCP Laboratory Analytical Results................................................................................6
4.0 IRM Maintenance Activities..................................................................................................7
4.1 Maintenance Activities..........................................................................................................7
4.2 Post -Maintenance Soil Sampling..........................................................................................8
4.2.1 Soil Sampling Methodology...........................................................................................8
4.2.2 Soil Laboratory Analytical Results.................................................................................9
5.0 Summary and Conclusions..................................................................................................10
iii �
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List of Tahles
Table 1 Summary of Soil and CCP Analytical Data for Metals
List of Figures
Figure 1 Site Location Map
Figure 2 Site Map
Figure 3 Post -Interim Remedial Measures Current Conditions Map (2024)
List of Appendices
Appendix A Laboratory Analytical Reports
Appendix B Pre- and Post -Interim Remedial Measures Maintenance Conditions Photographs
iv
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Interim Remedial Measures Maintenance Report
Chapel Hill Police Property
Chapel Hill, North Carolina
H&H Job No. TCH-009
4.0 Introduction
On behalf of the Town of Chapel Hill (Town), Hart & Hickman, P.C. (H&H) has prepared this
Interim Remedial Measures (IRMs) Maintenance Report for the Chapel Hill Police Property
(Brownfields Project No. 23022-19-068) located at 828 Martin Luther King Jr. Boulevard in
Chapel Hill, Orange County, North Carolina (subject Site or Site). The Site is comprised of one
parcel of land that is approximately 10.24 acres in size and is developed with a two-story
approximately 35,000 square foot (sq ft) building located in the north -central portion of the Site.
The building and associated parking areas are currently used for police department operations by
the Town (referred to as the Municipal Services Center). The Site topography consists of an
elevated area where the police building and associated parking lots are located which slopes along
an embankment to the south to a lower area along Bolin Creek where the Bolin Creek Trail is
located. Area topography is indicated in Figure 1, and a Site Map with Site features, surrounding
area uses, and detailed topography is included as Figure 2.
The Town is currently evaluating potential redevelopment options for the Site including
repurposing the Site for non-residential uses. As part of the evaluation process, the Town applied
for entry into the North Carolina Department of Environmental Quality (DEQ) Brownfields
Redevelopment Section program and received eligibility via a Letter of Eligibility dated October
1, 2019.
This report documents maintenance activities associated with IRMs previously performed at the
Site to manage coal combustion products (CCPs) along Bolin Creek Trail and the embankment
between the upper and lower portions of the Site. The IRM maintenance activities were conducted
in accordance with a DEQ Brownfields approved Environmental Management Plan (EMP) dated
March 19, 2024. A brief summary of background information is provided in Section 2.0, pre -
maintenance assessment activities are described in Section 3.0, and the IRM maintenance activities
are described in Section 4.0.
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2.0 Site Background
Previous assessment activities indicated that the Site was initially used as a borrow pit from the
late 1950s to early 1960s, and then was used as a fill site by a previous owner for placement of
construction debris and CCPs from the mid- 1960s to the mid- 1970s. Fill materials that have been
observed at the Site are generally comprised of construction debris, soil, and CCPs. In the early
1980s, the Town acquired the property and constructed the current police department building.
The Site consists of an upper level where the borrow pit was located, which is now occupied by
the police department building and parking areas, and a lower level adjacent to Bolin Creek where
the Bolin Creek Trail is located. The upper and lower levels are separated by a steep embankment
that is covered with vegetation. The Site layout, topography, and estimated area where CCPs are
present at the Site are depicted in Figure 2. As noted in Figure 2, areas along the embankment
were designated as Areas C through F depending upon the amount of cover soil identified over the
CCPs present in the fill materials in the embankment.
The Town conducted assessment activities at the Site from 2013 to 2022 to investigate potential
environmental impacts associated with the historical placement of structural fill containing CCPs.
The investigation activities included the collection and laboratory analysis of CCPs, groundwater,
sub -slab vapor, soil gas, soil, sediment, and surface water samples. Based on assessment activities,
the primary compounds of concern (COCs) detected in CCPs, shallow soil, and drainage pathway
soil are certain metals. Results of analysis of CCP samples indicate that arsenic, barium,
manganese, mercury, and selenium were detected above soil background levels and the DEQ
Preliminary Soil Remediation Goals (PSRGs). The most prevalent compound detected above soil
background levels and PSRGs in CCPs is arsenic.
In addition to COCs being identified in CCPs and soil, COCs have been detected in perched water
zones within the fill material. However, groundwater assessment activities identified limited to
no impacts in the underlying unconfined aquifer within and downgradient of the fill area.
Assessment activities also identified no significant impacts to stream sediment or surface water in
Bolin Creek. Additional background information and the methods and results of previous
assessment activities are provided in the following documents:
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• Phase I & Limited Phase II Environmental Site Assessment, Falcon Engineering, Inc., July
18, 2013;
• Phase II Remedial Investigation Report, H&H, January 26, 2017;
• Results of Data Gap Sampling Report, H&H, May 23, 2019;
• Results of Post -Data Gap Assessment Report, H&H, December 1, 2020; and
• Brownfields Assessment Report, H&H, December 13, 2022.
In 2020, IRMs were implemented which included excavation and off -Site disposal of soil and
exposed CCPs along Bolin Creek Trail, stabilization and cover of exposed CCPs in embankment
Area F (Figure 2), and temporary measures to address stormwater and erosion control in the area
of the embankment. Formerly exposed CCPs along Bolin Creek Trail were from deposition of
CCPs eroded from the embankment, and the exposed CCPs along the embankment appeared to be
the result of erosion of the overlying soil layer over time.
As part of the 2020 IRMs, approximately 1,004 tons of soil/CCPs at the base of the embankment
and along Bolin Creek were excavated and transported off -Site for disposal. In addition, standard
silt fencing and "super -silt" fencing (collectively referred to as the "silt fenced areas") were placed
along and downgradient of the embankment, hydroseed was placed over portions of the
embankment, and a new stormwater diversion channel was installed along portions of the top of
the embankment to minimize the potential for future erosion of soil/CCPs on the embankment (see
Figure 2). Under post-IRM conditions, CCP fill material at the Site is covered by at least 2 ft of
soil cover, with the exception of localized areas in the upper level with 1 to 2 ft of soil cover and
localized areas of CCPs along and at the base of the embankment where IRMs were implemented.
The interim measures are documented in an Interim Remedial Measures Report prepared by H&H
dated April 19, 2021.
Risk assessment activities performed after IRMs were completed concluded that the Bolin Creek
Trail is safe for users. Based on potential future redevelopment scenarios, the Town requested that
H&H perform additional risk assessment activities to evaluate further measures recommended to
address CCPs at the Site. The risk assessment recommended the implementation of permanent
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measures to address exposed CCPs along the embankment, potentially addressing isolated areas
of soil impacts, and managing CCPs through the implementation of land use restrictions (LURs)
and/or a DEQ-approved EMP, which can all be implemented as part of Site redevelopment.
Details associated with the risk assessment activities are provided in a Risk Assessment Report
prepared by H&H dated October 7, 2021.
Since 2020, the Town has proactively monitored the IRMs. Monitoring activities have included
inspections of on -Site stormwater controls and the silt fencing. During an inspection completed
by the Town in January 2024, the following Site conditions were observed:
• Erosion to the storm diversion channel that captures surface water runoff from the police
department parking lot; and
• Suspect shallow (0-6 inches) depositional CCPs located at the base of the embankment.
Based on the January 2024 inspection, H&H implemented IRM maintenance activities which
included collection of suspect soil/CCP samples for laboratory analysis, repairs to the storm
diversion channel, limited excavation of soil/CCPs at the base of the embankment and placing the
materials behind the silt fence areas, installation of additional silt fencing, hydroseeding, and post-
IRM soil sampling. The activities were conducted in accordance with the DEQ Brownfields
approved EMP dated March 19, 2024.
A summary of the sampling and IRM maintenance activities conducted in accordance with the
EMP is provided in the following sections.
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3.0 Pre -Maintenance Soil/CCP Assessment Activities
On January 19, 2024, H&H mobilized to the Site to advance borings in areas where suspect CCPs
were observed by the Town during the January 2024 inspection. Based on H&H's observations,
a depositional layer of CCPs intermixed with soil generally less than six inches thick appeared to
have migrated from a portion of the embankment to the outermost super -silt fence (F-4 in Figure
3). The apparent source of the CCPs was erosion from Area E, which appeared to be exacerbated
by burrowing. As discussed in Section 4.0, depositional CCPs which migrated to super -silt fence
F-4 were excavated and relocated to Area F and hydroseeded or were left in -place and
hydroseeded. The locations of depositional CCPs and silt fencing after the IRM maintenance
activities, and the locations of the January 2024 soil borings (identified as HH-16 through HH-18)
are shown on Figure 3.
Details of the pre -maintenance soil/CCP sampling activities and results are provided in the
following sections.
3.1 Soil/CCP Sampling Methodology
At each sample location, H&H generated a composite soil/CCP sample from three (3) aliquots
collected from shallow borings advanced within the area of each boring to a depth of
approximately six inches. After collection, the sample aliquots were homogenized using a
decontaminated stainless -steel bowl and spoon prior to placement into laboratory -supplied
glassware, labeled with the sample identification, date, time, requested analyses and placed on ice
in a laboratory supplied cooler under standard chain of custody protocols. The chain of custody is
provided in the laboratory analytical report provided in Appendix A. The three composite soil
samples were submitted to Pace Analytical Services, LLC (Pace) for analyses of arsenic, barium,
beryllium, cadmium, total chromium, cobalt, copper, manganese, mercury, nickel, and selenium
by EPA Methods 6020/7471, strontium by EPA Method 6010, and hexavalent chromium by EPA
Method 7199.
After collection, the sample locations were estimated using a sub -meter global positioning system
(GPS) unit.
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3.2 Soil/CCP Laboratory Analytical Results
A tabular summary of the January 2024 and historical soil and CCP sample analytical results for
metals is presented in Table 1. The laboratory analytical report and chain -of -custody record are
provided in Appendix A. In Table 1, the laboratory analytical results are compared to the DEQ
Protection of Groundwater (POG) and Industrial/Commercial PSRGs dated February 2024. In
addition to the PSRGs, metals results are compared to previously calculated Site -specific
Background Screening Values (BSVs). Based on EPA guidance (EPA, 2015a, 2018a, 2018b), the
BSVs for metals in soil at the Site consist of 95% upper tolerance limits (UTLs) with 95% coverage
determined using EPA's ProUCL calculator (EPA, 2015a) determined from analysis of
background soil samples collected in November 2016 and April 2019 at and near the Site. A
summary of the January 2024 soil/CCP assessment results is provided below.
Laboratory analytical results indicate concentrations of arsenic (up to 46.5 milligrams per kilogram
[mg/kg]) and barium (up to 3,330 mg/kg) were the only metals detected above Site -specific BSVs
and the DEQ Industrial/Commercial and/or POG PSRGs in samples HH-16, HH-17, and HH-18.
Based on the laboratory analytical results, soil/CCPs represented by samples HH-16 and HH-17
were excavated and relocated to Area F, and soil/CCPs represented by sample HH-18 were
hydroseeded in conjunction with other IRM maintenance activities which are detailed in Section
4.0.
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4.0 IRM Maintenance Activities
In April 2024, H&H supervised Contaminant Control, Inc. (CCI) during IRM maintenance
activities. The IRM maintenance activities including the following:
• Limited excavation and relocation of depositional CCPs adjacent to super -silt fence F-4;
• Implementation of cover and migration control measures including installation of
additional silt fencing and hydroseeding; and
• Repairs to the storm diversion channel adjacent to the police department parking lot.
Details of the maintenance activities and post -maintenance sampling results are provided in the
following sections.
4.1 Maintenance Activities
Based on the laboratory analytical results detailed in Section 3.0, depositional CCPs had migrated
with stormwater to the base of the embankment and along super -silt fence F-4. To prevent further
migration of CCPs and to minimize the potential for impact to human health and Bolin Creek,
depositional CCPs located along super -silt fence F-4 were excavated and relocated to Area F,
which is flanked by super -silt fencing F-1, F-2, and F-3. H&H directed CCI to excavate CCPs in
this area until visual observations indicated the CCPs had been sufficiently removed. In general,
CCPs were excavated to depths up to approximately six inches below ground surface (bgs) along
the inner and outer sides of super -silt fence F-4. Based on the limits of excavation, soil/CCPs
represented by sample HH-16 (located downhill of the silt fenced area) and sample HH-17 (located
uphill of the silt fenced area) were excavated and relocated to Area F. The excavations were
backfilled with native soil derived from an area east of the embankment, which does not appear to
contain CCPs based on H&H observations and historical assessment information.
Remaining depositional CCPs located within the silt fenced area and along the base of the
embankment, including the area of sample HH-18, were left in place and hydroseeded with warm -
season grass seed (Bermuda and German Millet), cool -season grass seed (fescue), and an organic
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matter amendment (ProGanicsTM Biotic Soil Mediarm) to promote vegetation. In addition, the
hydroseed mixture included a biodegradable growth medium (Flexterra® HP-FGMTM) to provide
erosion resistance. To further reduce the potential for depositional CCPs to migrate from the silt
fenced area, three parallel sections of standard silt fence totaling approximately 65 linear feet (If)
were added perpendicular to super -silt fence F-4 (labeled standard silt fences F-3, F-4, and F-5 in
Figure 3).
Other cover and migration control measures were also implemented in Area F, which included
pruning large vegetation followed by hydroseeding. Lastly, repairs were made to the storm
diversion channel that diverts surface water runoff from the police department parking lot towards
an existing outfall channel east of the parking lot (Figure 2). Specifically, CCI backfilled a
sinkhole that had formed within the storm diversion channel with approximately 12 tons of stone
screenings from Wake Stone Corporation's Triangle Quarry in Cary, North Carolina. The stone
screenings were compacted, followed by installation of approximately 25 cubic yards (cy) of
topsoil from Triangle Landscape Supply in Durham, North Carolina. The affected portion of the
storm diversion channel was then graded for drainage purposes, and erosion control matting was
installed prior to hydroseeding. Photographs of pre- and post-IRM maintenance conditions are
included in Appendix B.
Post -maintenance soil sampling procedures and laboratory analytical results are summarized in the
sections below.
4.2 Post -Maintenance Soil Sampling
4.2.1 Soil Sampling Methodology
Following removal of depositional soil/CCPs from outside of super -silt fence F-4 near sample HH-
16, H&H collected one shallow composite soil sample (HH-16A) to verify that concentrations of
compounds remaining in soil beyond the silt fenced area were consistent with BSVs. The
composite sample was collected from approximately 2-6 inches and sampling procedures were
consistent with the methods described in Section 3.1. The composite soil sample was submitted
to Pace for analyses of arsenic, barium, beryllium, cadmium, total chromium, cobalt, copper,
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manganese, mercury, nickel, and selenium by EPA Methods 6020/7471, strontium by EPA
Method 6010, and hexavalent chromium by EPA Method 7199.
After collection, the soil sample location was estimated using the GPS unit. The location of the
sample is provided in Figure 3.
4.2.2 Soil Laboratory Analytical Results
A tabular summary of the HH-16A soil sample analytical results is presented in Table 1. The
laboratory analytical report and chain -of -custody record are provided in Appendix A. As indicated
in Table 1, no metals were detected at concentrations that exceed Site -specific BSVs or DEQ
PSRGs. The results confirm that depositional soil/CCPs that had migrated beyond super -silt fence
F-4 in the area of sample HH-16 have been adequately removed.
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5.0 Summary and Conclusions
H&H has prepared this IRM Maintenance Report to summarize activities conducted in April 2024
to manage depositional CCPs recently observed during routine inspection of the IRMs
implemented in 2020. The activities were conducted in accordance with the DEQ Brownfields
approved EMP dated March 19, 2024. A brief summary of the maintenance and soil sampling
activities is provided below.
• Pre -maintenance soil/CCP sampling analytical results indicated that concentrations of
arsenic and barium only were detected above Site -specific BSVs and the DEQ
Industrial/Commercial and/or Protection of Groundwater PSRGs in samples HH-16, HH-
17, and HH-18 collected from the depositional materials. As part of excavation activities,
soil/CCPs represented by samples HH-16 and HH-17 were relocated to Area F and
hydroseeded. Soil/CCPs represented by sample HH-18, which is located within the silt
fenced area and along the base of the embankment, was left in place and hydroseeded.
The results of analysis of post -excavation soil sample HH-16A collected from outside of
the silt fenced area indicate that metals concentrations are less than Site -specific BSVs and
that depositional soil/CCPs that had migrated beyond the super -silt fence F-4 in the area of
sample HH-16 have been adequately removed.
• Following excavation, three parallel sections of standard silt fence totaling approximately
65 if were installed perpendicular to super -silt fence F-4 to reduce the potential for
depositional CCPs to migrate from the silt fenced area.
• Repairs were made to the storm diversion channel that diverts surface water runoff from
the police department parking lot towards an existing outfall channel east of the parking
lot. Import materials for restoration of the channel included approximately 12 tons of stone
screenings from Wake Stone Corporation's Triangle Quarry in Cary, North Carolina and
approximately 25 cy of topsoil from Triangle Landscape Supply located in Durham, North
Carolina.
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• The storm diversion channel, embankment Area F, and the depositional CCPs located
within the silt fenced area were hydroseeded with grass seed, an organic matter
amendment, and a biodegradable growth medium to provide erosion resistance.
H&H concludes that the IRM maintenance activities have adequately addressed the recently
observed depositional soil/CCPs located at the Site. H&H recommends that the Town continue to
conduct inspections of the IRMs and maintain them as warranted until long term remedial activities
are implemented.
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Table 1 (Page 1 of 2)
Summary of Soil and CCP Analytical Data for Metals
Chapel Hill Police Property
Chapel Hill, North Carolina
H&H Job No. TCH-009
Sample ID
Sample Date
Material Sampled
(Soil or CCPS)
Sample
Depth
(ft or in
E
c
E
>.
Ebgs)
E
°
E
vy
E
E
°
22
m
E
"
?
E
o
o
0
d
E
'
E
m
E
E
E
>
E
c
E
'
Ed
m
m
E
E
ma
E
=m
.@E0
@E
>
°
c
"R
Site -Specific BSVI'I
-
--
3.015
1 87.86
0.929
--
0.313
--
5.725
1 70.2
1 70.2
1 36.31
1 77.3
1 --
59.11
--
1,149
0.256
--
19.49
--
2.503
--
--
43.19
1 0.981*
227
230
PSRG - Protection of Groundwater(2)
110,000
0.90
5.8
580
63
45
3.0
NS
3.8
360,000
NS
0.90
700
150
270
NS
65
1.0
7.1
130
NS
2.1
3.4
NS
1,400
2.8
140
1,200
PSRG -Industrial/Commercial Health -Based"'
1 230,000
93
1 3.0
1 47,000
1 470
47,000
20
NS
1 6.5
1 350,000
1 NS
1 70
1 9,300
1 160,000
1 800
NS
1 5,600
9.7
1 1,200
1 4,700
1 NS
1 1,200
1 1,200
1 NS
1 140,000
1 2.3
1 1,200
70,000
Upper Level Samples
S-4
04/29/13
CCPS
1 ft
23,000
ND
14
24
ND
NA
9,900
NA
NA
22
30
65
59,000
20
9,000
1,500
0.011
NA
43
680
ND
ND
150
NA
ND
21
120
S-5
01/31/14
CCPS
0-4 ft
NA
NA
37
2,800
NA
NA
ND
NA
1.3
19.7
21
NA
NA
NA
10
NA
NA
0.30
NA
NA
NA
3.2
ND
NA
NA
NA
NA
NA
S-6
01/31/14
CCPS
0-4 ft
NA
NA
43
3,200
NA
NA
ND
NA
2.7
19.3
22
NA
NA
NA
12
NA
NA
0.42
NA
NA
NA
6.1
ND
NA
NA
NA
NA
NA
GP-1
02/03/14
CCPS
8-12 ft
NA
NA
3.5
86
NA
NA
ND
NA
ND
8.8
8.8
NA
NA
NA
26
NA
NA
0.083
NA
NA
NA
ND
ND
NA
NA
NA
NA
NA
GP-2
02/03/14
CCPS
26-28 ft
NA
NA
41
1,100
NA
NA
ND
NA
ND
19
19
NA
NA
NA
11
NA
NA
0.24
NA
NA
NA
4.0
ND
NA
NA
NA
NA
NA
GP-3
02/03/14
CCPS
10-12 ft
NA
NA
48
1,200
NA
NA
ND
NA
0.53
22.47
23
NA
NA
NA
39
NA
NA
0.42
NA
NA
NA
ND
ND
NA
NA
NA
NA
NA
GP-4
02/04/14
CCPS
10-12 ft
NA
NA
59
2,900
NA
NA
ND
NA
ND
20
20
NA
NA
NA
11
NA
NA
0.51
NA
NA
NA
5.8
ND
NA
NA
NA
NA
NA
02/04/14
CCPS
4-6 ft
I NA
NA
72
2,800
NA
NA
ND
NA
I ND
19
19
NA
NA
NA
9.5
NA
I NA
0.33
NA
NA
NA
2.6
ND
NA
NA
NA
I NA
NA
GP-5
04/03/19
CCPS
4-6 ft
NA
NA
95.9
2,350
5.46
NA
<0.956
NA
0.836 J
12.3
13.1
7.05
50.9
NA
NA
NA
34.7
1.2
NA
11.1
NA
12
NA
NA
325
NA
NA
NA
04/03/19i31
CCPS
4-6 ft
NA
NA
95.9
2,630
6.99
NA
<0.93'
NA
0.712 J
16.2
16.9
10.3
62.5
NA
NA
NA
53.4
0.39
NA
17.1
NA
13
NA
NA
308
NA
NA
NA
02/04/14
CCPS
9-11 ft
NA
NA
65
850
NA
NA
ND
NA
ND
19
19
NA
NA
NA
27
NA
NA
11
NA
NA
NA
4.1
ND
NA
NA
NA
NA
NA
GP-6
04/04/19
CCPS
9-10 ft
NA
NA
6.73
178
0.758
NA
0.118 J
NA
<1.11
10.0
10
5.18
11
NA
NA
NA
687
0.050
NA
6.24
NA
0.88
NA
NA
21.7
NA
NA
NA
GP-7
02/04/14
CCPS
10-12 ft
NA
NA
55
1,700
NA
NA
ND
NA
ND
19
19
NA
NA
NA
11
NA
NA
0.26
NA
NA
NA
4.3
ND
NA
NA
NA
NA
NA
GP-8
02/04/14
CCPS
11-15 ft
NA
NA
54
4,100
NA
NA
ND
NA
ND
20
20
NA
NA
NA
9.2
NA
NA
0.29
NA
NA
NA
4.5
ND
NA
NA
NA
NA
NA
GP-11
02/04/14
CCPS
4-6 ft
NA
NA
16
450
NA
NA
ND
NA
ND
16
16
NA
NA
NA
23
NA
NA
0.35
NA
NA
NA
ND
ND
NA
NA
NA
NA
NA
GP-12
02/04/14
CCPS
2-4 ft
NA
NA
52
2,000
NA
NA
ND
NA
ND
19
19
NA
NA
NA
14
NA
NA
0.28
NA
NA
NA
2.1
ND
NA
NA
NA
NA
NA
HH-1
11/03/16
Soil
0-1 ft
NA
<0.29
5.9
120
1.00
NA
<0.29
NA
0.45
20.55
21
7.9
25
NA
27
NA
350
0.052
NA
8.8
NA
0.69
NA
NA
31
<0.58
48
50
11/03/16i31
Soil
0-1 ft
NA
<0.35
3.4
110
0.79
NA
<0.35
NA
0.54
19.46
20
8.4
17
NA
18
NA
360 BH
0.067
NA
12
NA
<0.71
NA
NA
30
<0.71
41
35
HH-2
11/03/16
Soil
0-1 ft
NA
<0.29
4.9
140
0.93
NA
<0.29
NA
0.43
13.57
14
12
21
NA
30
NA
260
0.085
NA
5.9
NA
1.0
NA
NA
25
<0.58
48
43
HH-3
11/03/16
Soil
0-1 ft
NA
<0.33
9.9
200
1.30
NA
<0.33
NA
0.46 J
17.54
18
7.8
31
NA
24
NA
350
0.076
NA
8.9
NA
2.4
NA
NA
36
<0.65
53
100
HH-4
11/03/16
Soil
0-1 ft
NA
<0.28
2.4
72
1.00
NA
<0.28
NA
0.50
44.5
45
16
37
NA
2.3
NA
630
<0.023
NA
33
NA
<0.56
NA
NA
42
0.60
73
70
HH-5
11/03/16
Soil
0-1 ft
NA
<0.30
2.4
73
0.75
NA
<0.30
NA
<0.14
23
23
8.4
19
NA
9.3
NA
410
<0.025
NA
14
NA
1.2
NA
NA
23
<0.60
39
51
MW-7
11/01/16
Soil
0-1 ft
NA
<0.30
2.6
67
0.87
NA
<0.30
NA
0.89
9.11
10
3.9
180
NA
7.6
NA
100
0.030
NA
2.9
NA
<0.59
NA
NA
6.7
<0.59
61
46
HH-12
09/06/22
Soil
4-5 ft
NA
NA
1 1.6
1 65.6
0.72
1 NA
0.045 J
NA
0.583 J
1 10.3
10.9
1 13.1
26.6
1 NA
NA
NA
94.8
1 <0.0041
1 NA
17.1
NA
0.28 J
NA
NA
21.8
<0.044
1 59.3
NA
HH-13
09/06/22
Soil
0-2 ft
NA
NA
1.0
19.8
0.37
NA
<0.030
NA
<0.280
15.4
15.4
3.9
13.8
NA
NA
NA
368
0.025
NA
4.1
NA
0.19 J
NA
NA
15.2
<0.039
32.6
NA
HH-14
09/06/22
Soil
0-2 ft
NA
NA
2.0
51.6
0.42
NA
<0.035
NA
0.356 J
7.1
7.5
2.3
9.5
NA
NA
NA
32.9
0.041
NA
2.1
NA
0.64
NA
NA
2.5
0.096 J
22.2
NA
09/06/22i31
Soil
0-2 ft
NA
NA
1.4
38.7
0.34
NA
<0.032
NA
0IN J
3.9
4.4
1.6
5.3
NA
NA
NA
48.3
0.016
NA
1.2
NA
0.33 J
NA
NA
2.0
0.056 J
14.7
NA
HH-15
09/06/22
Soil
0-2 ft
NA
NA
1 0.76
1 31.0
1 0.27
1 NA
<0.031
NA
<0.313
1.6 J
1.6 J
1 1.6
1 6.6
NA
NA
NA
105
0.021
NA
1.0
NA
0.20 J
NA
NA
9.1
0.043 J
15.9
NA
Embankment Samples
S-7
01/31/14
CCPS
0-4 ft
NA
NA
44
2,500
NA
NA
ND
NA
1.4
27.6
29
NA
NA
NA
11
NA
NA
0.44
NA
NA
NA
4.5
ND
NA
NA
NA
NA
NA
HH-9
04/03/19
CCPS
0-1 ft
NA
NA
3.37
131
0.398 J
NA
0.178 J
NA
<1.29
12.7
12.7
5.97
14.5
NA
NA
NA
260
0.31
NA
3.59
NA
0.722
NA
NA
33.2
NA
NA
NA
HH-10
04/03/19
CCPS
0-1 ft
NA
NA
60.3
2,970
5.14
NA
0.162 J
NA
<1.60
13.8
13.8
9.84
51.3
NA
NA
NA
73.3
0.22
NA
17.1
NA
5.04
NA
NA
269
NA
NA
NA
HH-11
04/03/19
CCPS
0-1 ft
NA
NA
42.5
3,260
5.9
NA
0.220 J
NA
0.467 J
18.7
19.2
13.4
55.3
NA
NA
NA
113
0.43
NA
23.5
NA
9.05
NA
NA
234
NA
NA
NA
Lower Level Samples
SS-7
02/18/16
Soil
2-12 in
NA
ND
3.1
84
0.60
ND
ND
NA
NA
NA
14
6.9
1 15
NA
13
NA
500
0.038
ND
5.9
NA
ND
ND
NA
31
ND
37
37
HH-8
10/27/16
Soil
0-1 ft
NA
<0.30
3.6
100
1.00
NA
<0.30
NA
<0.35
19
19
12
29
NA
18
NA
570
0.036
NA
9.0
NA
<0.60
NA
NA
28
<0.60
52
54
MW-6
11/02/16
Soil
0-1 ft
NA
<0.26
2.9
38
0.61
NA
<0.26
NA
0.21 J
9.79
10
9.5
23
NA
12
NA
570
0.082
NA
8.2
NA
1.0
NA
NA
22
0.81
31
77
SED-3A
04/05/19
Soil
0-1 ft
NA
3.45
33.9
0.418 J
NA
<0.582
NA
<1.16
17.4
17.4
16.5
6.97
NA
NA
560
<0.0054
NA
5.82
NA
0.237 J
NA
NA
9.6
SED-SA
04/04/19
Soil
0-1 ft
NA
1.25
13.5
0.156 J
NA
<0.571
NA
0.352 J
13.2
13.6
5.95
39.1
NA
NA
243
0.0071
NA
4.38
NA
<0.571
NA
NA
10.9
SED-8
04/05/19
Drainage Pathway Soil
2-6 in
NA
2.41
49.1
0.313 J
NA
0.122 J
NA
<1.25
12.0
12
7.01
14.3
NA
NA
423
0.063
NA
4.66
NA
1.01
NA
NA
15.2
SED-9
04/05/19
Drainage Pathway Soil
2-6 in
NA
1.16
33.8
0.199 J
NA
<0.660
NA
0.461 J
21.6
22.1
9.11
10.1
NA
NA
431
0.013
NA
6.68
NA
<0.660
NA
NA
16.7
SED-10
04/05/19
Drainage Pathway Soil
2-6 in
NA
1.29
24.4
1 0.118 J
NA
0.221 J
NA
0.418 J
12.0
1 12.4
4.43
10.8
NA
NA
1 195
0.037
1 NA
4.03
NA
0.273 J
NA
NA
8.1
08/27/19
Drainage Pathway Soil
0-2 in
NA
4.73
102
0.765 J
NA
0.214 J
NA
<1.68
27.6
27.6
6.17
1 23.1
NA
NA
341
0.042
NA
7.69
NA
0.961
NA
NA
25.4
SED-12
04/05/19
Drainage Pathway Soil
2-6 in
NA
3.97
122
0.499 J
NA
0.204 J
NA
<1.74
9.45
9.45 B
6.04
19.7
NA
NA
319
0.077
NA
4.95
NA
1.36
NA
NA
32.8
08/27/19
Drainage Pathway Soil
0-2 in
NA
12.4
958
1.56
NA
0.284 J
NA
<2.03
29.4
29.4
13.9
38.9
NA
NA
538
0.12
NA
19.2
NA
3.07
NA
NA
125
SED-13
04/05/19
Drainage Pathway Soil
2-6 in
NA
14.5
724
1.1
NA
0.171 J
NA
<1.58
14.0
14
7.58
27.1
NA
NA
563
0.075
NA
8.73
NA
1.69
NA
NA
70.5
SED-18
04/05/19
Drainage Pathway Soil
2-6 in
NA
4.53
137
0.534 J
NA
<0.689
NA
<1.38
18.7
18.7
11.1
28.2
NA
NA
464
0.051
NA
9
NA
1.85
NA
NA
32.6
SED-19
04/05/19
Drainage Pathway Soil
2-6 in
NA
1.55
20.0
0.161 J
NA
<0.588
NA
0.435 J
21.7
22.1
7.98
8.38
NA
NA
266
0.0073
NA
4.94
NA
0.334 J
NA
NA
15
SED-20
04/05/19
Drainage Pathway Soil
2-6 in
NA
0.792
31.4
0.152 J
NA
<0.687
NA
<1.37
5.76
5.76 B
4.5
9.1
NA
NA
360
0.012
NA
2.19
NA
0.263 J
NA
NA
11.5
SED-21
04/05/19
Drainage Pathway Soil
2-6 in
NA
1.12
25.9
1 0.149 J
NA
<0.591
NA
<1.18
20.9
1 20.9
4.44
6.58
NA
NA
1 221
0.011
1 NA
2.7
NA
0.286 J
NA
NA
12.8
Excavation G-1
04/16/20
Soil
2-3 ft
NA
NA
3.68
58.8
<3.08
NA
<1.23
NA
0.478 J
20.0
20.5
5.73
14.5
NA
NA
193
0.052
NA
6.94
NA
-', ��°
NA
NA
6.2
NA
NA
NA
Excavation H-1
05/11/20
Soil
1-2 ft
NA
NA
1 1.16
37.2
<2.76
NA
<1.10
NA
<1.10
20.1
20.1
10.7
15.3
NA
NA
412
<0.0442
NA
5.80
NA
NA
NA
29.3
NA
NA
NA
Excavation H-2
05/11/20
Soil
1-2 ft
NA
NA
1.93
100
<3.25
NA
<1.30
NA
0.578 J
43.8
44.4
19.1
59.2
NA
NA
265
0.0494 J
NA
16.2
NA
1.58 J
NA
NA
56.8
NA
NA
NA
Excavation H-3
05/11/20
Soil
1-2 ft
NA
NA
2.41
71.0
<3.28
NA
<1.31
NA
0.410 J
40.2
40.6
14.1
43.4
NA
NA
251
0.0485 J
NA
12.5
NA
1.46 J
NA
NA
58.1
NA
NA
NA
Excavation H-4
05/11/20
Soil
2-3 ft
NA
NA
2.03
67.1
<3.04
NA
<1.22
NA
0.388 J
25.8
26.2
20.8
24.0
NA
NA
1,480
0.0237 J
NA
7.81
NA
NA
NA
38.1
NA
NA
NA
Excavation H-5
05/11/20
Soil
1-2 ft
NA
NA
1.10 J
74.5
<3.04
NA
<1.22
NA
0.497 J
21.1
21.6
8.25
16.9
NA
NA
558
<0.0486
NA
6.77
NA
NA
NA
32.2
NA
NA
NA
Excavation H-6
05/11/20
Soil
1-2 ft
NA
NA
1.02 J
96.0
<2.97
NA
<1.19
NA
<1.19
14.9
14.9
7.57
10.7
NA
NA
557
0.0222 J
NA
4.03
NA
NA
NA
20.5
NA
NA
NA
Excavation H-7
11/09/20
Soil
0-1 ft
NA
NA
1.10 J
73.7
0.767 J
NA
<1.22
NA
<1.22
8.04
1 8.04
3.68
15.0
NA
NA
233
0.022
NA
4.63
NA
0.479 J
NA
NA
9.6
NA
NA
NA
Excavation 1-1
04/08/20
Soil
1-2 ft
NA
NA
2.91
67.2
<2.77
NA
<1.11
NA
0.457 J
26.2
26.7
13.0
18.3
NA
NA
594
0.042
NA
8.25
NA
<2.77
NA
NA
26.3
NA
NA
NA
Excavation 1-2
04/08/20
Soil
1-2 ft
NA
NA
1 3.65
74.1
<2.85
NA
<1.14
NA
0.313 J
23.3
23.6
12.0
21.4
NA
NA
544
0.022
NA
8.70
NA
<2.85
NA
NA
17.2
NA
NA
NA
Excavation 1-3
04/08/20
Soil
1-2 ft
NA
NA
2.18
61.5
<2.88
NA
<1.15
NA
0.387 J
13.1
13.5
9.23
19.5
NA
NA
419
0.019
NA
6.02
NA
<2.88
NA
NA
13.3
NA
NA
NA
HH-16**
01/19/24
Soil/CCPS
2-6 in
NA
NA
6.18
195.0
0.816 J
NA
<1.60
NA
0.044 J
19.2
19.2
12.2
25.1
NA
NA
457
0.048
NA
15.7
NA
0.525 J
NA
NA
77.5
NA
NA
NA
HH-16A
04/05/24
Soil
2-6 in
NA
NA
1.32
57.5
0.462 J
NA
<1.21
NA
<1.3
17.4
17.4
15.1
19.9
NA
NA
680
<0.0482
NA
14.8
NA
0.557 J
NA
NA
15.4
NA
NA
NA
HH-17**
01/19/24
Soil/CEPS
2-6 in
NA
NA
46.5
1,890
4.61 J
NA
0.248 J
NA
1.7 J
16.3
18.0
9.77
55.4
NA
NA
134
0.18
NA
18.3
NA
1.91 J
NA
NA
263
NA
NA
NA
HH-18
01/19/24
Soil/CCPS
2-6 in
NA
NA
34.2
3,330
3.59 J
NA
0.189 J
NA
0.77 J
1 13.9
14.7
8.84
39.3
1 NA
NA
100
0.13
NA
1 16.6
NA
1.46 J
NA
NA
226
NA
NA
NA
­s­o:<­.­1i­.009­bN Hart & Hickman, PC

Table 1 (Page 2 of 2)
Summary of Soil and CCP Analytical Data for Metals
Chapel Hill Police Property
Chapel Hill, North Carolina
H&H Job No. TCH-009
E
E
E
Sample
0
Sample ID
Sample Date
Material Sampled
Depth
'2
2
?
E
E
m
E
(Soil or CCPs)
(ft or in
E
>.
E
E
m
"
o
'
E
E
E
E
bgs)
c_
0
Y
E
>
>
E
m
c
t
,�
ai
m
it
a
_
'w
E
.E
E
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.-
$
0
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"R
Site -Specific BSV(1)
-
--
3.015
87.86
0.929
--
0.313
--
5.725
70.2
70.2
1 36.31
1 77.3
--
59.11
--
1,149
0.256
--
19.49
--
2.503
--
--
43.19
1 0.981*
227
230
PSRG - Protection of Groundwater(2)
110,000
0.90
5.8
580
63
45
3.0
NS
3.8
360,000
NS
0.90
700
150
270
NS
65
1.0
7.1
130
NS
2.1
3.4
NS
1,400
2.8
140
1,200
PSRG -Industrial/Commercial Health -Based"'
1 230,000
1 93
1 3.0
47,000
1 470
47,000
1 20
NS
1 6.5
1 350,000
1 NS
1 70
1 9,300
160,000
1 800
NS
1 5,600
9.7
1 1,200
1 4,700
1 NS
1 1,200
1 1,200
1 NS
1 140,000
1 2.3
1,200
70,000
Background Samples
MW-5
11/02/16
Soil
0-1 ft
NA
<0.30
2.1
76
0.99
NA
<0.30
NA
0.43 J
17.57
18
27
49
NA
4.0
NA
710
<0.023
NA
5.0
NA
<0.59
NA
NA
25
<0.59
190
47
(background)
11/02/16
Soil
6-7 ft
NA
<0.27
1.4
61
0.60
NA
<0.27
NA
0.81
38.19
39
19
18
NA
0.55
NA
940
<0.020
NA
20
NA
<0.53
NA
NA
29
2.3
67
75
11/03/16
Soil
0-1 ft
NA
<0.28
1.9
36
0.39
NA
<0.28
NA
0.87
17.13
18
6.3
16
NA
25
NA
310
0.033
NA
5.4
NA
1.6
NA
NA
15
<0.57
34
43
BG-1 (background)
11/03/16
Soil
2-3 ft
NA
<0.29
2.3
45
0.48
NA
<0.29
NA
<0.12
19
19
7.3
18
NA
43
NA
440
0.280
NA
6.2
NA
1.6
NA
NA
15
<0.57
35
49
BG-2
11/03/16
Soil
0-1 ft
NA
<0.28
1.9
45
0.50
NA
<0.28
NA
0.84
16.16
17
7.4
18
NA
32
NA
410
0.045
NA
4.9
NA
1.1
NA
NA
14
<0.56
35
44
(background)
11/03/16
Soil
2-3 ft
NA
<0.27
1.9
52
0.53
NA
<0.27
NA
0.70
23.3
24
7.5
20
NA
26
NA
450
0.038
NA
7.9
NA
1.7
NA
NA
19
<0.55
37
45
BG-3
11/03/16
Soil
0-1 ft
NA
<0.30
1.7
44
0.43
NA
<0.30
NA
0.21 J
23.3
16
7.5
15
NA
25
NA
410
0.024
NA
5.1
NA
1.4
NA
NA
46
<0.60
37
40
(background)
11/03/16
Soil
2-3 ft
NA
<0.27
2.2
56
0.54
NA
<0.27
NA
0.88
21.12
22
7.5
1 18
NA
29
NA
410
0.040
NA
5.2
NA
1.2
NA
NA
19
<0.53
40
46
BG-4
11/03/16
Soil
0-1 ft
NA
<0.29
1.7
50
0.50
NA
<0.29
NA
<0.13
19
19
9.5
16
NA
22
NA
450 BH
0.026
NA
6.0
NA
<0.59
NA
NA
16 A
<0.59
53
50
(background)
11/03/16
Soil
2-3 ft
NA
<0.33
2.0
53
0.52
NA
0.38
NA
0.50 J
22.5
23
11
23
NA
21
NA
460 BH
0.054
NA
8.5
NA
<0.65
NA
NA
19
<0.65
51
230
BG-6
04/03/19
Soil
0-1 ft
NA
NA
2.0501
64.4
0.625
NA
0.177 J
NA
5.34
39.4
44.7
14.4
26.4
NA
NA
NA
448 J6
0.022
NA
12.8
NA
0.562 J
NA
NA
17
NA
NA
NA
(background)
04/04/19
Soil
2-3 ft
NA
NA
2.29
66.3
0.507 J
NA
0.139 J
NA
<1.19
22.9
22.9
14.7
32.3
NA
NA
NA
467
0.032
NA
7.78
NA
0.828
NA
NA
16.8
NA
NA
NA
BG-7
04/03/19
Soil
0-1 ft
NA
NA
1.97
52.7
0.410 J
NA
0.136 J
NA
<1.16
70.2
70.2
18.9
36.4
NA
NA
NA
813
0.025
NA
12.8
NA
0.543 J
NA
NA
22.6
NA
NA
NA
(background)
04/04/19
Soil
2-3 ft
NA
NA
3.08
77.9
0.430 J
NA
0.108 J
NA
<1.16
27
27
16.3
32.5
NA
NA
NA
548
0.023
NA
6.2
NA
0.502 J
NA
NA
24.3
NA
NA
NA
BG-8
04/03/19
Soil
0-1 ft
NA
NA
1.8
52.4
0.370 J
NA
0.0951 J
NA
<1.14
24.5
24.5
21.8
62.8
NA
NA
NA
759
0.0072
NA
9.04
NA
0.485 J
NA
NA
24.4
NA
NA
NA
(background)
04/04/19
Soil
2-3ft
NA
NA
1.66
47.6
0.293 J
NA
0.0918 J
NA
<1.14
21.7
21.7
23.5
60.2
NA
NA
NA
732
10.0067
NA
7.86
NA
0.306 J
NA
NA
25.1
NA
NA
NA
Notes:
Concentrations reported in milligrams per kilogram (mg/kq).
Yellow highlighting indicates samples collected as part of January and April 2024 sampling.
1) Site -Specific Background Screening Value (BSV) represents 95 % upper threshold level (UTL) with 95 % coverage calculated using EPA ProUCL 5.1.
`Insufficient data to calculate 95 % UTL; therefore, site -specific BSV indicates 2x mean concentration with non -detect concentrations calculated as half the reporting limit.
2) North Carolina Department of Environmental Quality (DEC) Preliminary Soil Remediation Goals (PSRGs) (January 2024).
3) Duplicate sample results.
Concentrations reported in milligrams per kilogram (mg/kg).
Bold indicates concentration above or equal to Protection of Groundwater PSRG and site -specific BSV.
Shading indicates concentration above or equal to Industrial/Commercial PSRG and site -specific BSV.
* = CCPs sample locations excavated as part of interim remedial measures maintenance (2024).
CCPs = Coal Combustion Products
ND = Not Detected; NA = Not Analyzed; NS = Not Specified; NC = Not Calculated
- = Statistical test not applicable to data set
J = Detected above method detection limit but below laboratory reporting limit; therefore, result is an estimated concentration.
01 = Analyte failed the method required serial dilution test and/or subsequent post -spike criteria. These failures indicate matrix interference.
J6 = The sample matrix interfered with the ability to make any accurate determination; spike value is low.
BH = Method blank greater than one-half laboratory reporting limit, but sample concentration greater than 1 Ox the method blank.
A = Continuing Calibration Verification standard recovery (82%) is less than the lower control limit (90 % ). Result has possible low bias.
Excavated sample locations are not shown in table.
Analytical Methods
Metals by EPA Method 6010C or 6020B
Hexavalent Chromium by EPA Method 7196 or 7199 (Phase II RI, April 2019 Data Gap, September 2022 Samples, and January and April 2024 Samples)
Mercury by EPA Method 7471B
P.1-S--­s­o:<­.­1i­.009­bN Hart & Hickman, PC

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PROJECT CHAPEL HILL POLICE PROPERTY
828 MARTIN LUTHER KING JR. BOULEVARD
CHAPEL HILL, NORTH CAROLINA
•
3921 Sunset Ridge Road, Suite 301
hart '"�• h i c k m a n Raleigh, North Carolina 27607
P. 919-847-4241(p) 919-847-4261(fl
SMARTER ENVIRONMENTAL SOLUTIONS License # C-1269 / #C-245 Geology
DATE: 5-9-24
REVISION NO. 0
JOB NO. TCH-009
FIGURE NO. 2

Appendix A
Laboratory Analytical Reports
hart hickman
SMARTER ENVIRONMENTAL SOLUTIONS

ceo
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
January 29, 2024
Justin Ballard
Hart & Hickman
3921 Sunset Ridge Rd.
Suite 301
Raleigh, NC 27607
RE: Project: TCH-009
Pace Project No.: 92709652
Dear Justin Ballard:
Enclosed are the analytical results for sample(s) received by the laboratory on January 23, 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 National - Mt. Juliet
• Pace Analytical Services - Asheville
• Pace Analytical Services - Charlotte
If you have any questions concerning this report, please feel free to contact me.
Sincerely,
Taylor M Cannon
[e-mail]
704-977-0943
Project Manager
Enclosures
�pQ ACcr?FO
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.
Page 1 of 19

Project: TCH-009
Pace Project No.: 92709652
Pace Analytical Services National
12065 Lebanon Road, Mt. Juliet, TN 37122
Alabama Certification #: 40660
Alaska Certification 17-026
Arizona Certification #: AZ0612
Arkansas Certification #: 88-0469
California Certification #: 2932
Canada Certification #: 1461.01
Colorado Certification #: TN00003
Connecticut Certification #: PH-0197
DOD Certification: #1461.01
EPA# TN00003
Florida Certification #: E87487
Georgia DW Certification #: 923
Georgia Certification: NELAP
Idaho Certification #: TN00003
Illinois Certification #: 200008
Indiana Certification #: C-TN-01
Iowa Certification #: 364
Kansas Certification #: E-10277
Kentucky UST Certification #: 16
Kentucky Certification #: 90010
Louisiana Certification #: A130792
Louisiana DW Certification #: LA180010
Maine Certification #: TN0002
Maryland Certification #: 324
Massachusetts Certification #: M-TNO03
Michigan Certification #: 9958
Minnesota Certification #: 047-999-395
Mississippi Certification #: TN00003
Missouri Certification #: 340
Montana Certification M CERT0086
Nebraska Certification #: NE-OS-15-05
Pace Analytical Services, LLC
9800 KinceyAve. Suite 100
Huntersville, NC 28078
[phone]
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
Pace Analytical Services Asheville
2225 Riverside Drive, Asheville, NC 28804
Florida/NELAP Certification #: E87648
North Carolina Drinking Water Certification #: 37712
North Carolina Wastewater Certification #: 40
CERTIFICATIONS
Nevada Certification #: TN-03-2002-34
New Hampshire Certification #: 2975
New Jersey Certification #: TNO02
New Mexico DW Certification
New York Certification #: 11742
North Carolina Aquatic Toxicity Certification #: 41
North Carolina Drinking Water Certification #: 21704
North Carolina Environmental Certificate #: 375
North Dakota Certification #: R-140
Ohio VAP Certification #: CL0069
Oklahoma Certification #: 9915
Oregon Certification #: TN200002
Pennsylvania Certification #: 68-02979
Rhode Island Certification #: LA000356
South Carolina Certification #: 84004
South Dakota Certification
Tennessee DW/Chem/Micro Certification #: 2006
Texas Mold Certification #: LAB0152
Texas Certification #: T 104704245-17-14
USDA Soil Permit #: P330-15-00234
Utah Certification #: TN00003
Virginia Certification #: VT2006
Vermont Dept. of Health: ID# VT-2006
Virginia Certification #: 460132
Washington Certification #: C847
West Virginia Certification #: 233
Wisconsin Certification #: 998093910
Wyoming UST Certification #: via A21-A 2926.01
A21-A-ISO 17025 Certification #: 1461.01
A21-A-ISO 17025 Certification #: 1461.02
AIHA-LAP/LLC EMLAP Certification #:100789
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
South Carolina Laboratory ID: 99030
South Carolina Certification #: 99030001
Virginia/VELAP Certification #: 460222
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC. Page 2 of 19

ceo
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
SAMPLE SUMMARY
Project: TCH-009
Pace Project No.: 92709652
Lab ID
Sample ID
Matrix
Date Collected
Date Received
92709652001
HH-16
Solid
01/19/2415:00
01/23/2414:15
92709652002
HH-17
Solid
01/19/2415:10
01/23/2414:15
92709652003
HH-18
Solid
01/19/2415:20
01/23/2414:15
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.
Page 3 of 19

ceo
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
SAMPLE ANALYTE COUNT
Project: TCH-009
Pace Project No.: 92709652
Analytes
Lab ID Sample ID
Method
Analysts
Reported
Laboratory
92709652001 HH-16
EPA7199
SMS1
1
PASI-C
EPA 6010D
SBW
1
PASI-A
EPA 6020E
LID
10
PAN
EPA 7471 B
BM
1
PASI-A
SW-846
KDF
1
PASI-C
SM 2540G
KDW
1
PAN
92709652002 HH-17
EPA7199
SMS1
1
PASI-C
EPA 6010D
SBW
1
PASI-A
EPA 6020E
LID
10
PAN
EPA 7471 B
BM
1
PASI-A
SW-846
KDF
1
PASI-C
SM 2540G
KDW
1
PAN
92709652003 HH-18
EPA7199
SMS1
1
PASI-C
EPA 6010D
SBW
1
PASI-A
EPA 6020E
LID
10
PAN
EPA 7471 B
BM
1
PASI-A
SW-846
KDF
1
PASI-C
SM 2540G
KDW
1
PAN
PAN = Pace National - Mt. Juliet
PASI-A = Pace Analytical Services - Asheville
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.
Page 4 of 19

ceo
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
ANALYTICAL RESULTS
Project: TCH-009
Pace Project No.: 92709652
Sample: HH-16
Lab ID: 92709652001 Collected: 01/19/24 15:00 Received: 01/23/24 14:15 Matrix: Solid
Results reported on a "dry weight"
basis and are adjusted for percent moisture, sample size and any dilutions.
Report
Parameters
Results Units Limit MDL DF Prepared
Analyzed
CAS No.
Qual
7199 Chromium, Hexavalent
Analytical Method: EPA 7199 Preparation Method: EPA 7199
Pace Analytical Services - Charlotte
Chromium, Hexavalent
0.044J mg/kg 1.6 0.0016 1 01/25/24 16:39
01/26/24 19:18
18540-29-9 B,M1
6010 MET ICP
Analytical Method: EPA 6010D Preparation Method: EPA 3050E
Pace Analytical Services -Asheville
Strontium
77.5 mg/kg 0.57 0.088 1 01/24/2411:18
01/25/2419:41
7440-24-6
M1
Metals (ICPMS) 6020B
Analytical Method: EPA 6020E Preparation Method: 3050B
Pace National - Mt. Juliet
Arsenic
6.18 mg/kg 1.60 0.160 5 01/28/24 07:11
01/28/24 16:31
7440-38-2
Barium
195 mg/kg 4.01 0.244 5 01/28/24 07:11
01/28/24 16:31
7440-39-3
Beryllium
0.816.1 mg/kg 4.01 0.221 5 01/28/24 07:11
01/28/24 16:31
7440-41-7
J
Cadmium
ND mg/kg 1.60 0.137 5 01/28/24 07:11
01/28/24 16:31
7440-43-9
Chromium
19.2 mg/kg 8.01 0.474 5 01/28/24 07:11
01/28/24 16:31
7440-47-3
Cobalt
12.2 mg/kg 1.60 0.0740 5 01/28/24 07:11
01/28/24 16:31
7440-48-4
Copper
25.1 mg/kg 8.01 0.212 5 01/28/24 07:11
01/28/24 16:31
7440-50-8
Manganese
457 mg/kg 4.01 0.429 5 01/28/24 07:11
01/28/24 16:31
7439-96-5
Nickel
15.7 mg/kg 4.01 0.316 5 01/28/24 07:11
01/28/24 16:31
7440-02-0
Selenium
0.525J mg/kg 4.01 0.288 5 01/28/24 07:11
01/28/24 16:31
7782-49-2
J
7471 Mercury
Analytical Method: EPA 7471 B Preparation Method: EPA 7471 B
Pace Analytical Services -Asheville
Mercury
0.048 mg/kg 0.0089 0.0055 1 01/27/2411:21
01/27/2412:26
7439-97-6
Percent Moisture
Analytical Method: SW-846
Pace Analytical Services - Charlotte
Percent Moisture
38.4 % 0.10 0.10 1
01/23/24 17:04
N2
Total Solids 2540 G-2011
Analytical Method: SM 2540G Preparation Method: SM 2540 G
Pace National - Mt. Juliet
Total Solids
62.4 % 1 01/26/24 09:29
01/26/24 09:45
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
Date: 01 /29/2024 03:30 PM
without the written consent of Pace Analytical Services, LLC.
Page 5 of 19

ceo
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
ANALYTICAL RESULTS
Project: TCH-009
Pace Project No.: 92709652
Sample: HH-17
Lab ID: 92709652002 Collected:
01/19/24 15:10 Received: 01/23/24 14:15 Matrix: Solid
Results reported on a "dry weight"
basis and are adjusted for percent moisture, sample size and any dilutions.
Report
Parameters
Results Units Limit
MDL DF Prepared
Analyzed
CAS No.
Qual
7199 Chromium, Hexavalent
Analytical Method: EPA 7199 Preparation
Method: EPA 7199
Pace Analytical Services - Charlotte
Chromium, Hexavalent
1.7J mg/kg 2.2
0.0022 1 01/25/24 16:39
01/26/24 20:11
18540-29-9
6010 MET ICP
Analytical Method: EPA 6010D Preparation Method: EPA 3050E
Pace Analytical Services -Asheville
Strontium
263 mg/kg 0.76
0.12 1 01/24/2411:18
01/25/2419:52
7440-24-6
Metals (ICPMS) 6020B
Analytical Method: EPA 6020E Preparation Method: 3050B
Pace National - Mt. Juliet
Arsenic
46.5 mg/kg 2.03
0.203 5 01/28/24 07:11
01/28/24 16:42
7440-38-2
Barium
1890 mg/kg 5.07
0.309 5 01/28/24 07:11
01/28/24 16:42
7440-39-3
Beryllium
4.61J mg/kg 5.07
0.280 5 01/28/24 07:11
01/28/24 16:42
7440-41-7
J
Cadmium
0.248.1 mg/kg 2.03
0.174 5 01/28/24 07:11
01/28/24 16:42
7440-43-9
J
Chromium
18.0 mg/kg 10.1
0.601 5 01/28/24 07:11
01/28/24 16:42
7440-47-3
Cobalt
9.77 mg/kg 2.03
0.0938 5 01/28/24 07:11
01/28/24 16:42
7440-48-4
Copper
55.4 mg/kg 10.1
0.268 5 01/28/24 07:11
01/28/24 16:42
7440-50-8
Manganese
134 mg/kg 5.07
0.544 5 01/28/24 07:11
01/28/24 16:42
7439-96-5
Nickel
18.3 mg/kg 5.07
0.400 5 01/28/24 07:11
01/28/24 16:42
7440-02-0
Selenium
1.91.1 mg/kg 5.07
0.365 5 01/28/24 07:11
01/28/24 16:42
7782-49-2
J
7471 Mercury
Analytical Method: EPA 7471 B Preparation Method: EPA 7471 B
Pace Analytical Services -Asheville
Mercury
0.18 mg/kg 0.011
0.0070 1 01/27/2411:21
01/27/2412:32
7439-97-6
Percent Moisture
Analytical Method: SW-846
Pace Analytical Services - Charlotte
Percent Moisture
54.8 % 0.10
0.10 1
01/23/24 17:04
N2
Total Solids 2540 G-2011
Analytical Method: SM 2540G Preparation Method: SM 2540 G
Pace National - Mt. Juliet
Total Solids
49.3 %
1 01/26/24 09:29
01/26/24 09:45
Date: 01/29/2024 03:30 PM
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.
Page 6 of 19

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Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
ANALYTICAL RESULTS
Project: TCH-009
Pace Project No.: 92709652
Sample: HH-18
Lab ID: 92709652003 Collected:
01/19/24 15:20 Received: 01/23/24 14:15 Matrix: Solid
Results reported on a "dry weight"
basis and are adjusted for percent moisture, sample size and any dilutions.
Report
Parameters
Results Units Limit
MDL DF Prepared
Analyzed
CAS No.
Qual
7199 Chromium, Hexavalent
Analytical Method: EPA 7199 Preparation
Method: EPA 7199
Pace Analytical Services - Charlotte
Chromium, Hexavalent
0.77J mg/kg 1.6
0.0016 1 01/25/24 16:39
01/26/24 20:47
18540-29-9
6010 MET ICP
Analytical Method: EPA 6010D Preparation Method: EPA 3050E
Pace Analytical Services -Asheville
Strontium
226 mg/kg 0.61
0.094 1 01/24/2411:18
01/25/2419:55
7440-24-6
Metals (ICPMS) 6020B
Analytical Method: EPA 6020E Preparation Method: 3050B
Pace National - Mt. Juliet
Arsenic
34.2 mg/kg 1.64
0.164 5 01/28/24 07:11
01/28/24 16:46
7440-38-2
Barium
3330 mg/kg 4.10
0.249 5 01/28/24 07:11
01/28/24 16:46
7440-39-3
Beryllium
3.59.1 mg/kg 4.10
0.226 5 01/28/24 07:11
01/28/24 16:46
7440-41-7
J
Cadmium
0.189.1 mg/kg 1.64
0.140 5 01/28/24 07:11
01/28/24 16:46
7440-43-9
J
Chromium
14.7 mg/kg 8.19
0.485 5 01/28/24 07:11
01/28/24 16:46
7440-47-3
Cobalt
8.84 mg/kg 1.64
0.0757 5 01/28/24 07:11
01/28/24 16:46
7440-48-4
Copper
39.3 mg/kg 8.19
0.216 5 01/28/24 07:11
01/28/24 16:46
7440-50-8
Manganese
100 mg/kg 4.10
0.439 5 01/28/24 07:11
01/28/24 16:46
7439-96-5
Nickel
16.6 mg/kg 4.10
0.323 5 01/28/24 07:11
01/28/24 16:46
7440-02-0
Selenium
1.46.1 mg/kg 4.10
0.295 5 01/28/24 07:11
01/28/24 16:46
7782-49-2
J
7471 Mercury
Analytical Method: EPA 7471 B Preparation Method: EPA 7471 B
Pace Analytical Services -Asheville
Mercury
0.13 mg/kg 0.0083
0.0051 1 01/27/2411:21
01/27/2412:34
7439-97-6
Percent Moisture
Analytical Method: SW-846
Pace Analytical Services - Charlotte
Percent Moisture
38.0 % 0.10
0.10 1
01/23/24 17:04
N2
Total Solids 2540 G-2011
Analytical Method: SM 2540G Preparation Method: SM 2540 G
Pace National - Mt. Juliet
Total Solids
61.0 %
1 01/26/24 09:29
01/26/24 09:45
Date: 01/29/2024 03:30 PM
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.
Page 7 of 19

ceo
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
QUALITY CONTROL DATA
Project: TCH-009
Pace Project No.: 92709652
QC Batch: 2213799 Analysis Method: EPA 6020B
QC Batch Method: 3050B Analysis Description: Metals (ICPMS) 6020B
Laboratory: Pace National - Mt. Juliet
Associated Lab Samples: 92709652001, 92709652002, 92709652003
METHOD BLANK: R4027028-1 Matrix:
Associated Lab Samples: 92709652001, 92709652002, 92709652003
Blank
Parameter Units Result
Solid
Reporting
Limit
MDL
Analyzed Qualifiers
Arsenic
mg/kg
ND
1.00
0.100
01/28/2416:02
Barium
mg/kg
ND
2.50
0.152
01/28/2416:02
Beryllium
mg/kg
ND
2.50
0.138
01/28/2416:02
Cadmium
mg/kg
ND
1.00
0.0855
01/28/2416:02
Chromium
mg/kg
ND
5.00
0.297
01/28/2416:02
Cobalt
mg/kg
ND
1.00
0.0463
01/28/2416:02
Copper
mg/kg
ND
5.00
0.133
01/28/2416:02
Manganese
mg/kg
ND
2.50
0.269
01/28/2416:02
Nickel
mg/kg
ND
2.50
0.197
01/28/2416:02
Selenium
mg/kg
ND
2.50
0.180
01/28/2416:02
LABORATORY CONTROL SAMPLE:
R4027028-2
Spike
LCS
LCS
% Rec
Parameter
Units
Conc.
Result
% Rec
Limits Qualifiers
Arsenic
mg/kg
100
107
107
80.0-120
Barium
mg/kg
100
98.0
98.0
80.0-120
Beryllium
mg/kg
100
95.1
95.1
80.0-120
Cadmium
mg/kg
100
109
109
80.0-120
Chromium
mg/kg
100
106
106
80.0-120
Cobalt
mg/kg
100
109
109
80.0-120
Copper
mg/kg
100
109
109
80.0-120
Manganese
mg/kg
100
108
108
80.0-120
Nickel
mg/kg
100
108
108
80.0-120
Selenium
mg/kg
100
107
107
80.0-120
MATRIX SPIKE & MATRIX SPIKE DUPLICATE: R4027028-5
R4027028-6
MS
MSD
L1698946-10
Spike
Spike
MS
MSD
MS MSD % Rec
Max
Parameter
Units
Result
Conc.
Conc.
Result
Result
% Rec % Rec Limits
RPD
RPD Qual
Arsenic
mg/kg
3.67
100
100
101
86.2
97.2 82.5 75.0-125
15.7
20
Barium
mg/kg
325
100
100
257
234
0.00 0.00 75.0-125
9.33
20 ML
Beryllium
mg/kg
0.556
100
100
92.7
78.7
92.2 78.1 75.0-125
16.4
20
Cadmium
mg/kg
0.104
100
100
107
89.6
107 89.5 75.0-125
17.8
20
Chromium
mg/kg
12.0
100
100
108
92.3
96.4 80.3 75.0-125
16.0
20
Cobalt
mg/kg
6.65
100
100
105
88.3
98.3 81.7 75.0-125
17.2
20
Copper
mg/kg
15.1
100
100
122
106
107 90.9 75.0-125
14.3
20
Manganese
mg/kg
415
100
100
636
521
221 106 75.0-125
19.9
20 P6
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.
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
Date: 01 /29/2024 03:30 PM without the written consent of Pace Analytical Services, LLC.
Page 8 of 19

ceo
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
QUALITY CONTROL DATA
Project: TCH-009
Pace Project No.: 92709652
MATRIX SPIKE & MATRIX SPIKE DUPLICATE: R4027028-5
R4027028-6
MS
MSD
L1698946-10
Spike
Spike
MS MSD MS
MSD % Rec
Max
Parameter Units
Result
Conc.
Conc.
Result Result % Rec
% Rec Limits
RPD RPD Qual
Nickel mg/kg
12.5
100
100
111 96.4 98.9
83.9 75.0-125
14.4 20
Selenium mg/kg
0.317
100
100
103 86.5 103
86.2 75.0-125
17.7 20
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.
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
Date: 01 /29/2024 03:30 PM without the written consent of Pace Analytical Services, LLC.
Page 9 of 19

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Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
QUALITY CONTROL DATA
Project: TCH-009
Pace Project No.: 92709652
QC Batch: 828053 Analysis Method: EPA 7471 B
QC Batch Method: EPA 7471 B Analysis Description: 7471 Mercury
Laboratory: Pace Analytical Services -Asheville
Associated Lab Samples: 92709652001, 92709652002, 92709652003
METHOD BLANK: 4281167 Matrix: Solid
Associated Lab Samples: 92709652001, 92709652002, 92709652003
Blank Reporting
Parameter Units Result Limit MDL Analyzed Qualifiers
Mercury mg/kg ND 0.0060 0.0037 01/27/2412:19
LABORATORY CONTROL SAMPLE: 4281168
Spike LCS LCS % Rec
Parameter Units Conc. Result % Rec Limits Qualifiers
Mercury mg/kg 0.083 0.090 108 80-120
MATRIX SPIKE & MATRIX SPIKE DUPLICATE: 4281169 4281170
MS MSD
92709652001 Spike Spike MS MSD MS MSD % Rec Max
Parameter Units Result Conc. Conc. Result Result % Rec % Rec Limits RPD RPD Qual
Mercury mg/kg 0.048 0.12 0.12 0.16 0.18 97 108 75-125 10 20
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.
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
Date: 01 /29/2024 03:30 PM without the written consent of Pace Analytical Services, LLC.
Page 10 of 19

ceo
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
QUALITY CONTROL DATA
Project: TCH-009
Pace Project No.: 92709652
QC Batch: 827439 Analysis Method: EPA 6010D
QC Batch Method: EPA 3050E Analysis Description: 6010 MET
Laboratory: Pace Analytical Services -Asheville
Associated Lab Samples: 92709652001, 92709652002, 92709652003
METHOD BLANK: 4278267 Matrix: Solid
Associated Lab Samples: 92709652001, 92709652002, 92709652003
Blank Reporting
Parameter Units Result Limit MDL Analyzed Qualifiers
Strontium mg/kg ND 0.50 0.077 01/25/2419:33
LABORATORY CONTROL SAMPLE: 4278268
Spike LCS LCS % Rec
Parameter Units Conc. Result % Rec Limits Qualifiers
Strontium mg/kg 50 50.0 100 80-120
MATRIX SPIKE & MATRIX SPIKE DUPLICATE: 4278269 4278270
MS MSD
92709652001 Spike Spike MS MSD MS MSD % Rec Max
Parameter Units Result Conc. Conc. Result Result % Rec % Rec Limits RPD RPD Qual
Strontium mg/kg 77.5 55.8 56.3 170 145 167 119 75-125 16 20 M1
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.
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
Date: 01 /29/2024 03:30 PM without the written consent of Pace Analytical Services, LLC.
Page 11 of 19

ceo
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
QUALITY CONTROL DATA
Project: TCH-009
Pace Project No.: 92709652
QC Batch: 827875 Analysis Method: EPA 7199
QC Batch Method: EPA 7199 Analysis Description: 7199 Chromium, Hexavalent
Laboratory: Pace Analytical Services - Charlotte
Associated Lab Samples: 92709652001, 92709652002, 92709652003
METHOD BLANK: 4280398 Matrix: Solid
Associated Lab Samples: 92709652001, 92709652002, 92709652003
Blank Reporting
Parameter Units Result Limit MDL Analyzed Qualifiers
Chromium, Hexavalent mg/kg 0.016J 1.0 0.0010 01/26/24 18:43
LABORATORY CONTROL SAMPLE: 4280399
Spike LCS LCS % Rec
Parameter Units Conc. Result % Rec Limits Qualifiers
Chromium, Hexavalent mg/kg 10 9.8 98 80-120
MATRIX SPIKE & MATRIX SPIKE DUPLICATE: 4280400 4280401
MS MSD
92709652001 Spike Spike MS MSD MS MSD % Rec Max
Parameter Units Result Conc. Conc. Result Result % Rec % Rec Limits RPD RPD Qual
Chromium, Hexavalent mg/kg 0.044J 16.2 16.2 0.13J 0.71J 1 4 75-125 20 M1
MATRIX SPIKE SAMPLE: 4280402
92709652003 Spike MS MS % Rec
Parameter Units Result Conc. Result % Rec Limits Qualifiers
Chromium, Hexavalent mg/kg 0.77J 2010 2370 118 75-125
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.
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
Date: 01 /29/2024 03:30 PM without the written consent of Pace Analytical Services, LLC. Page 12 of 19

ceo
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
QUALITY CONTROL DATA
Project: TCH-009
Pace Project No.: 92709652
QC Batch: 827296 Analysis Method: SW-846
QC Batch Method: SW-846 Analysis Description: Dry Weight/Percent Moisture
Laboratory: Pace Analytical Services - Charlotte
Associated Lab Samples: 92709652001, 92709652002, 92709652003
SAMPLE DUPLICATE: 4277726
92709636001
Dup
Max
Parameter
Units
Result
Result
RPD RPD Qualifiers
Percent Moisture
%
12.5
11.4
9 25 N2
SAMPLE DUPLICATE: 4277727
92709619001
Dup
Max
Parameter
Units
Result
Result
RPD RPD Qualifiers
Percent Moisture
%
21.9
21.5
2 25 N2
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.
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
Date: 01 /29/2024 03:30 PM without the written consent of Pace Analytical Services, LLC. Page 13 of 19

ceo
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
QUALITY CONTROL DATA
Project: TCH-009
Pace Project No.: 92709652
QC Batch: 2213693 Analysis Method: SM 2540G
QC Batch Method: SM 2540 G Analysis Description: Total Solids 2540 G-2011
Laboratory: Pace National - Mt. Juliet
Associated Lab Samples: 92709652001, 92709652002, 92709652003
METHOD BLANK: R4026814-1 Matrix: Solid
Associated Lab Samples: 92709652001, 92709652002, 92709652003
Blank Reporting
Parameter Units Result Limit MDL Analyzed Qualifiers
Total Solids % 0.00100 01/26/24 09:45
LABORATORY CONTROL SAMPLE: R4026814-2
Spike LCS LCS % Rec
Parameter Units Conc. Result % Rec Limits Qualifiers
Total Solids % 50.0 50.0 100 90.0-110
SAMPLE DUPLICATE: R4026814-3
L1698640-16 Dup Max
Parameter Units Result Result RPD RPD Qualifiers
Total Solids % 83.5 83.4 0.125 10
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.
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
Date: 01 /29/2024 03:30 PM without the written consent of Pace Analytical Services, LLC. Page 14 of 19

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Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
QUALIFIERS
Project: TCH-009
Pace Project No.: 92709652
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.
TN -The NELAC Institute.
ANALYTE QUALIFIERS
B Analyte was detected in the associated method blank
J Analyte detected below the reporting limit, therefore result is an estimate. This qualifier is also used for all TICs.
M1 Matrix spike recovery exceeded QC limits. Batch accepted based on laboratory control sample (LCS) recovery.
ML Matrix spike recovery and/or matrix spike duplicate recovery was below laboratory control limits. Result may be biased
low.
N2 The lab does not hold NELAC/TNI accreditation for this parameter but other accreditations/certifications may apply. A
complete list of accreditations/certifications is available upon request.
P6 Matrix spike recovery was outside laboratory control limits due to a parent sample concentration notably higher than the
spike level.
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
Date: 01 /29/2024 03:30 PM without the written consent of Pace Analytical Services, LLC. Page 15 of 19

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Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
QUALITY CONTROL DATA CROSS REFERENCE TABLE
Project:
Pace Project No.:
TCH-009
92709652
Analytical
Lab ID
Sample ID
QC Batch Method
QC Batch
Analytical Method
Batch
92709652001
HH-16
EPA 7199
827875
EPA 7199
828103
92709652002
HH-17
EPA 7199
827875
EPA 7199
828103
92709652003
HH-18
EPA 7199
827875
EPA 7199
828103
92709652001
HH-16
EPA 3050B
827439
EPA 6010D
827565
92709652002
HH-17
EPA 3050B
827439
EPA 6010D
827565
92709652003
HH-18
EPA 3050B
827439
EPA 6010D
827565
92709652001
HH-16
3050B
2213799
EPA6020B
2213799
92709652002
HH-17
3050B
2213799
EPA6020B
2213799
92709652003
HH-18
3050B
2213799
EPA6020B
2213799
92709652001
HH-16
EPA 7471 B
828053
EPA 7471 B
828362
92709652002
HH-17
EPA 7471 B
828053
EPA 7471 B
828362
92709652003
HH-18
EPA 7471 B
828053
EPA 7471 B
828362
92709652001
HH-16
SW-846
827296
92709652002
HH-17
SW-846
827296
92709652003
HH-18
SW-846
827296
92709652001
HH-16
SM 2540 G
2213693
SM 2540G
2213693
92709652002
HH-17
SM 2540 G
2213693
SM 2540G
2213693
92709652003
HH-18
SM 2540 G
2213693
SM 2540G
2213693
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
Date: 01 /29/2024 03:30 PM without the written consent of Pace Analytical Services, LLC.
Page 16 of 19

DC# Title: ENV-FRM-HUN1-0033 vD3 Sample condition Upon Keceipt
- ace
Effective Date: 11/29/2023 4:16:30 PM _I
Laboratory receiving samples:
Asheville ❑ Eden❑ Greenwood ❑ Huntersville t Raleigh[] Mechanicsville❑ Atlanta❑ KernersvillrF-1
Sample Condition Client Name: ` 0# : Q27OQ652
Upon Receiptt] 1 Project #: W �i v
Courier: ,led Ex P5 LAPSClient
❑ Commercial Lfpace ❑ other:
92709652
Custody Seal Present? ❑Yes INo
Packing Material; ❑Bubble Wrap
Thermante�er: � A M
[� G I
Seals Intact?
Bubble Bags
❑ Yes ❑ No RfN/A
Date/Initials Person Examining Contents: 1 11 )
❑None ❑ other
4R Lin ID- Type of Ice: LIINet ❑Blue
di t Correction Factor: f
Cooler Temp: Oi c] Add/Subtract (}°C)
Cooler Temp Corrected [°�'
USDA Regulated Soil [ /A, water sample)
Did samples originate in�ay(p"tlarantine zone within the United States: CA, NY, or SC
frh—L, m d? M Vl � I Nn
Biological Tissue ozen?
❑ Yes ❑ ND VN/A
❑ None
Temp should be above freezing to 6'C
❑ Samples out of temp criteria. Samples on ice, cooling process
has begun
Did samples originate from a foreign source (intern .zonally,
includine Hawaii and Puerto Rico]? ❑Yes No
Comments/Discrepancy:
Chain of Custody Present?
Yes
❑ No
] N/A
1.
Samples Arrived within Hold Time?
Yes
❑ No
❑ N/A
2.
Short Hold Time Analysis (<72 hr.)?
VYes
❑ No
❑ N/A
3.
Rush Turn Around Time Requested?
[I Yes
ffNa
I] NIA
A.
Sufficient Volume?
Yes
❑ No
❑ N/A
S.
Correct Containers Used?
-Pace Containers Used?
�es
Yes
[I No
❑ No
El N/A
❑ NIA
6.
Containers Intact?
Ej Yes
❑ No
❑ N/A
7.
Dissolved analysis: 5ampies Field Filtered?
El Yes
No
❑ N/A
B.
Sample Labels Match COC?
Inciudes Date/Time/ID/Analysis Matrix:
Yes
!S�_
❑ No
❑ N/A
9.
Headspace in VOA Vials (>5-6mm}?
❑Yes
❑ No
tjwA
ID.
Trip Blank Present?
Tri Blank Custody Seals Present?
❑ Yes
❑Yes
❑ No
❑ No
El ZI
COMMENTS/SAMPLE DISCREPANCY
CLIENT NOTIFICATION/RESOLUTION
Person contacted:
Project Manager SCURF Review:
Project Manager SRF Review:
Lot ID of split containers:
Date/Time:
Date:
Date:
Field Data Required? LJ Yes LJ No
Qualtrax ID: 69614 Paae 1 of 2
Page 17 of 19

Effective Date: 11/14/2022
`Check mark top half of box if pH and/or dechlorination is verified and project WO# : 927a965Z
within the acceptance range for preservation samples. PM: TMC Due Dale: 01/31/24
Exceptions: VOA, CoWorrn, TOC. Oil and Grease, ORO/8015 [water) DOC. LLHg CLIENT: 92—Hart—Ra 1
**Bottom half of box is to list number of bottles
'Check all unpreserved Nitrates for chlorine
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Ga 0. a 0. C 0. a 1 a l7 0 l7 0 0 %3 l7 0 0 0 d M. a. a L7 vl l7
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pH Adjustment Lag for Preserved Samples
Sample to I
Type of Pteservative pH upon receipt Date preservation adjusted Time preservation Amount of Preservative Lot N
adjusted added
Note- Whenever there rs a discrepancy tfrertsng Plortn Carolina comeliance Samples, a Lopy of I form voll be sLol to Ihn North Carolina OENR CcrlifrEaGon Office (I n
Out of hold, inco-en preservalive, Out of temp. incorrtcl conla+ners.
Qualtrax ID_ 69(31 l
Page 2 of 2
Page 18 of 19

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samplc. —

ceo
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
April 17, 2024
Justin Ballard
Hart & Hickman
3921 Sunset Ridge Rd.
Suite 301
Raleigh, NC 27607
RE: Project: TCH-009
Pace Project No.: 92723769
Dear Justin Ballard:
Enclosed are the analytical results for sample(s) received by the laboratory on April 08, 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 National - Mt. Juliet
• Pace Analytical Services - Charlotte
If you have any questions concerning this report, please feel free to contact me.
Sincerely,
Taylor M Cannon
[e-mail]
704-977-0943
Project Manager
Enclosures
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.
Page 1 of 17

Project: TCH-009
Pace Project No.: 92723769
Pace Analytical Services National
12065 Lebanon Road, Mt. Juliet, TN 37122
Alabama Certification #: 40660
Alaska Certification 17-026
Arizona Certification #: AZ0612
Arkansas Certification #: 88-0469
California Certification #: 2932
Canada Certification #: 1461.01
Colorado Certification #: TN00003
Connecticut Certification #: PH-0197
DOD Certification: #1461.01
EPA# TN00003
Florida Certification #: E87487
Georgia DW Certification #: 923
Georgia Certification: NELAP
Idaho Certification #: TN00003
Illinois Certification #: 200008
Indiana Certification #: C-TN-01
Iowa Certification #: 364
Kansas Certification #: E-10277
Kentucky UST Certification #: 16
Kentucky Certification #: 90010
Louisiana Certification #: A130792
Louisiana DW Certification #: LA180010
Maine Certification #: TN0002
Maryland Certification #: 324
Massachusetts Certification #: M-TNO03
Michigan Certification #: 9958
Minnesota Certification #: 047-999-395
Mississippi Certification #: TN00003
Missouri Certification #: 340
Montana Certification M CERT0086
Nebraska Certification #: NE-OS-15-05
Pace Analytical Services, LLC
9800 KinceyAve. Suite 100
Huntersville, NC 28078
[phone]
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
CERTIFICATIONS
Nevada Certification #: TN-03-2002-34
New Hampshire Certification #: 2975
New Jersey Certification #: TNO02
New Mexico DW Certification
New York Certification #: 11742
North Carolina Aquatic Toxicity Certification #: 41
North Carolina Drinking Water Certification #: 21704
North Carolina Environmental Certificate #: 375
North Dakota Certification #: R-140
Ohio VAP Certification #: CL0069
Oklahoma Certification #: 9915
Oregon Certification #: TN200002
Pennsylvania Certification #: 68-02979
Rhode Island Certification #: LA000356
South Carolina Certification #: 84004
South Dakota Certification
Tennessee DW/Chem/Micro Certification #: 2006
Texas Certification #: T 104704245-17-14
Texas Mold Certification #: LAB0152
USDA Soil Permit #: P330-15-00234
Utah Certification #: TN00003
Virginia Certification #: VT2006
Vermont Dept. of Health: ID# VT-2006
Virginia Certification #: 460132
Washington Certification #: C847
West Virginia Certification #: 233
Wisconsin Certification #: 998093910
Wyoming UST Certification #: via A21-A 2926.01
A21-A-ISO 17025 Certification #: 1461.01
A21-A-ISO 17025 Certification #: 1461.02
AIHA-LAP/LLC EMLAP Certification #:100789
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. Page 2 of 17

ceo
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
SAMPLE SUMMARY
Project: TCH-009
Pace Project No.: 92723769
Lab ID Sample ID Matrix Date Collected Date Received
92723769001 HH-16A Solid 04/05/2411:30 04/08/2411:40
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC. Page 3 of 17

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Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
SAMPLE ANALYTE COUNT
Project: TCH-009
Pace Project No.: 92723769
Analytes
Lab ID Sample ID
Method
Analysts
Reported
Laboratory
92723769001 HH-16A
EPA7199
SMS1
1
PASI-C
EPA 6010D
ZSA
1
PAN
EPA 6020E
JPD
10
PAN
EPA 7471 B
NDL
1
PAN
SW-846
CHC
1
PASI-C
SM 2540G
KDW
1
PAN
PAN = Pace National - Mt. Juliet
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.
Page 4 of 17

ceo
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
ANALYTICAL RESULTS
Project: TCH-009
Pace Project No.: 92723769
Sample: HH-16A
Lab ID: 92723769001 Collected:
04/05/24 11:30 Received: 04/08/24 11:40 Matrix: Solid
Results reported on a "dry weight"
basis and are adjusted for percent moisture, sample size and any dilutions.
Report
Parameters
Results Units Limit
MDL DF Prepared
Analyzed
CAS No.
Qual
7199 Chromium, Hexavalent
Analytical Method: EPA 7199 Preparation Method: EPA 7199
Pace Analytical Services - Charlotte
Chromium, Hexavalent
ND mg/kg 1.3
0.0013 1 04/14/2408:04
04/15/2419:39
18540-29-9
M1,R1
Metals (ICP) 6010D
Analytical Method: EPA 601 OD Preparation Method: 3051
Pace National - Mt. Juliet
Strontium
15.4 mg/kg 1.21
0.0815 1 04/15/24 09:28
04/15/24 13:47
7440-24-6
Metals (ICPMS) 6020B
Analytical Method: EPA 6020E Preparation Method: 3051
Pace National - Mt. Juliet
Arsenic
1.32 mg/kg 1.21
0.121 5 04/11/2412:38
04/13/2411:29
7440-38-2
Barium
57.5 mg/kg 3.02
0.183 5 04/11/2412:38
04/12/2418:29
7440-39-3
Beryllium
0.462J mg/kg 3.02
0.166 5 04/11/2412:38
04/12/2418:29
7440-41-7
J,R1
Cadmium
ND mg/kg 1.21
0.103 5 04/11/2412:38
04/12/2418:29
7440-43-9
Chromium
17.4 mg/kg 6.03
0.357 5 04/11/2412:38
04/12/2418:29
7440-47-3
PH
Cobalt
15.1 mg/kg 1.21
0.0557 5 04/11/2412:38
04/12/2418:29
7440-48-4
PH
Copper
19.9 mg/kg 6.03
0.159 5 04/11/2412:38
04/12/2418:29
7440-50-8
Manganese
680 mg/kg 15.1
1.62 25 04/11/2412:38
04/12/2419:08
7439-96-5
Nickel
14.8 mg/kg 3.02
0.238 5 04/11/2412:38
04/13/2411:29
7440-02-0
Selenium
0.557J mg/kg 3.02
0.217 5 04/11/2412:38
04/12/2418:29
7782-49-2
J
Mercury7471B
Analytical Method: EPA7471B Preparation Method: 7471A
Pace National - Mt. Juliet
Mercury
ND mg/kg 0.0482
0.0217 1 04/11/2413:17
04/12/2412:16
7439-97-6
Percent Moisture
Analytical Method: SW-846
Pace Analytical Services - Charlotte
Percent Moisture
20.3 % 0.10
0.10 1
04/12/24 13:47
N2
Total Solids 2540 G-2011
Analytical Method: SM 2540G Preparation Method: SM 2540 G
Pace National - Mt. Juliet
Total Solids
82.9 %
1 04/11/24 07:25
04/11/24 07:34
Date: 04/17/2024 09:22 AM
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.
Page 5 of 17

ceo
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
QUALITY CONTROL DATA
Project: TCH-009
Pace Project No.: 92723769
QC Batch: 2267082 Analysis Method: EPA 6010D
QC Batch Method: 3051 Analysis Description: Metals (ICP) 6010D
Laboratory: Pace National - Mt. Juliet
Associated Lab Samples: 92723769001
METHOD BLANK: R4057804-1
Associated Lab Samples: 92723769001
Parameter Units
Strontium mg/kg
LABORATORY CONTROL SAMPLE: R4057804-2
Parameter Units
Strontium mg/kg
Matrix: Solid
Blank Reporting
Result Limit
0.0779J 1.00
Spike LCS
Conc. Result
100 102
MDL Analyzed Qualifiers
0.0676 04/15/2413:10 J
LCS % Rec
% Rec Limits Qualifiers
102 80.0-120
MATRIX SPIKE & MATRIX SPIKE DUPLICATE: R4057804-5 R4057804-6
MS MSD
L1723250-01 Spike Spike MS MSD MS MSD % Rec Max
Parameter Units Result Conc. Conc. Result Result % Rec % Rec Limits RPD RPD Qual
Strontium mg/kg 1.65 106 106 114 109 106 102 75.0-125 4.43 20
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.
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
Date: 04/17/2024 09:22 AM without the written consent of Pace Analytical Services, LLC.
Page 6 of 17

ceo
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
QUALITY CONTROL DATA
Project: TCH-009
Pace Project No.: 92723769
QC Batch: 2264697 Analysis Method: EPA 6020B
QC Batch Method: 3051 Analysis Description: Metals (ICPMS) 6020B
Laboratory: Pace National - Mt. Juliet
Associated Lab Samples: 92723769001
METHOD BLANK: R4057194-1
Associated Lab Samples: 92723769001
Parameter
Units
Matrix:
Blank
Result
Solid
Reporting
Limit
MDL
Analyzed Qualifiers
Arsenic
mg/kg
ND
1.00
0.100
04/12/2418:22
Barium
mg/kg
ND
2.50
0.152
04/12/2418:22
Beryllium
mg/kg
ND
2.50
0.138
04/12/2418:22
Cadmium
mg/kg
ND
1.00
0.0855
04/12/2418:22
Chromium
mg/kg
ND
5.00
0.297
04/12/2418:22
Cobalt
mg/kg
ND
1.00
0.0463
04/12/2418:22
Copper
mg/kg
0.137J
5.00
0.133
04/12/2418:22 J
Manganese
mg/kg
ND
2.50
0.269
04/12/2418:22
Nickel
mg/kg
ND
2.50
0.197
04/12/2418:22
Selenium
mg/kg
ND
2.50
0.180
04/12/2418:22
LABORATORY CONTROL SAMPLE:
R4057194-2
Parameter
Units
Arsenic
mg/kg
Barium
mg/kg
Beryllium
mg/kg
Cadmium
mg/kg
Chromium
mg/kg
Cobalt
mg/kg
Copper
mg/kg
Manganese
mg/kg
Nickel
mg/kg
Selenium
mg/kg
Spike
Conc.
LCS
Result
LCS
% Rec
% Rec
Limits
100
103
103
80.0-120
100
104
104
80.0-120
100
98.4
98.4
80.0-120
100
105
105
80.0-120
100
103
103
80.0-120
100
106
106
80.0-120
100
100
100
80.0-120
100
102
102
80.0-120
100
105
105
80.0-120
100
104
104
80.0-120
Qualifiers
MATRIX SPIKE & MATRIX SPIKE DUPLICATE: R4057194-5
R4057194-6
MS
MSD
92723769001
Spike
Spike
MS
MSD
MS
MSD % Rec
Max
Parameter
Units
Result
Conc.
Conc.
Result
Result
% Rec
% Rec Limits
RPD
RPD Qual
Arsenic
mg/kg
1.34
121
121
103
124
84.7
101 75.0-125
17.8
20
Barium
mg/kg
57.5
121
121
160
180
85.4
101 75.0-125
11.4
20
Beryllium
mg/kg
0.462
121
121
104
134
85.9
111 75.0-125
25.5
20 R1
Cadmium
mg/kg
ND
121
121
110
133
91.1
111 75.0-125
19.4
20
Chromium
mg/kg
17.4
121
121
124
144
88.0
105 75.0-125
15.2
20
Cobalt
mg/kg
15.1
121
121
131
150
95.7
112 75.0-125
14.2
20
Copper
mg/kg
19.9
121
121
124
145
86.1
104 75.0-125
16.0
20
Manganese
mg/kg
654
121
121
724
663
58.7
7.47 75.0-125
8.90
20 P6
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
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
Date: 04/17/2024 09:22 AM without the written consent of Pace Analytical Services, LLC.
Page 7 of 17

ceo
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
QUALITY CONTROL DATA
Project: TCH-009
Pace Project No.: 92723769
MATRIX SPIKE & MATRIX SPIKE DUPLICATE: R4057194-5
R4057194-6
MS
MSD
92723769001
Spike
Spike
MS MSD
MS
MSD % Rec
Max
Parameter Units
Result
Conc.
Conc.
Result Result
% Rec
% Rec Limits
RPD RPD Qual
Nickel mg/kg
14.8
121
121
131 151
96.4
113 75.0-125
14.3 20
Selenium mg/kg
0.557
121
121
92.6 108
76.3
89.4 75.0-125
15.7 20
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.
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
Date: 04/17/2024 09:22 AM without the written consent of Pace Analytical Services, LLC.
Page 8 of 17

ceo
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
QUALITY CONTROL DATA
Project: TCH-009
Pace Project No.: 92723769
QC Batch: 2264739 Analysis Method: EPA 7471 B
QC Batch Method: 7471A Analysis Description: Mercury 7471 B
Laboratory: Pace National - Mt. Juliet
Associated Lab Samples: 92723769001
METHOD BLANK: R4056975-1
Associated Lab Samples: 92723769001
Parameter Units
Mercury mg/kg
LABORATORY CONTROL SAMPLE: R4056975-2
Parameter Units
Mercury mg/kg
Matrix: Solid
Blank Reporting
Result Limit
ND 0.0400
Spike LCS
Conc. Result
0.500 0.502
MDL Analyzed Qualifiers
0.0180 04/12/2411:18
LCS % Rec
% Rec Limits Qualifiers
100 80.0-120
MATRIX SPIKE & MATRIX SPIKE DUPLICATE: R4056975-4 R4056975-5
MS MSD
L1724166-14 Spike Spike MS MSD MS MSD % Rec Max
Parameter Units Result Conc. Conc. Result Result % Rec % Rec Limits RPD RPD Qual
Mercury mg/kg ND 0.652 0.652 0.633 0.605 97.0 92.7 75.0-125 4.50 20
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.
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
Date: 04/17/2024 09:22 AM without the written consent of Pace Analytical Services, LLC. Page 9 of 17

ceo
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
QUALITY CONTROL DATA
Project: TCH-009
Pace Project No.: 92723769
QC Batch: 846799 Analysis Method: EPA 7199
QC Batch Method: EPA 7199 Analysis Description: 7199 Chromium, Hexavalent
Laboratory: Pace Analytical Services - Charlotte
Associated Lab Samples: 92723769001
METHOD BLANK: 4372333
Matrix:
Solid
Associated Lab Samples: 92723769001
Blank
Reporting
Parameter
Units
Result
Limit
MDL Analyzed Qualifiers
Chromium, Hexavalent
mg/kg
ND
1.0
0.0010 04/15/24 18:28
LABORATORY CONTROL SAMPLE:
4372334
Spike
LCS
LCS % Rec
Parameter
Units
Conc. Result
% Rec Limits Qualifiers
Chromium, Hexavalent
mg/kg
10
9.0
90 80-120
MATRIX SPIKE & MATRIX SPIKE DUPLICATE: 4372335
4372336
MS MSD
92723769001
Spike Spike
MS
MSD MS MSD % Rec Max
Parameter Units
Result
Conc. Conc.
Result
Result % Rec % Rec Limits RPD RPD Qual
Chromium, Hexavalent mg/kg
ND
12.5
13 9.0
7.2 71 55 75-125 22 20 M1,R1
MATRIX SPIKE SAMPLE: 4372337
92723769001 Spike MS MS % Rec
Parameter Units Result Conc. Result % Rec Limits Qualifiers
Chromium, Hexavalent mg/kg ND 1620 1570 98 75-125
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.
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
Date: 04/17/2024 09:22 AM without the written consent of Pace Analytical Services, LLC. Page 10 of 17

ceo
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
QUALITY CONTROL DATA
Project: TCH-009
Pace Project No.: 92723769
QC Batch: 846560 Analysis Method: SW-846
QC Batch Method: SW-846 Analysis Description: Dry Weight/Percent Moisture
Laboratory: Pace Analytical Services - Charlotte
Associated Lab Samples: 92723769001
SAMPLE DUPLICATE: 4371137
Parameter
Percent Moisture
SAMPLE DUPLICATE: 4371138
Parameter
Percent Moisture
92723769001 Dup
Units Result Result
20.3 20.4
92724572013 Dup
Units Result Result
% 22.6 22.0
Max
RPD RPD Qualifiers
1 25 N2
Max
RPD RPD Qualifiers
3 25 N2
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.
REPORT OF LABORATORY ANALYSIS
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Date: 04/17/2024 09:22 AM without the written consent of Pace Analytical Services, LLC. Page 11 of 17

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Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
QUALITY CONTROL DATA
Project: TCH-009
Pace Project No.: 92723769
QC Batch: 2264575 Analysis Method: SM 2540G
QC Batch Method: SM 2540 G Analysis Description: Total Solids 2540 G-2011
Laboratory: Pace National - Mt. Juliet
Associated Lab Samples: 92723769001
METHOD BLANK: R4056845-1
Matrix:
Solid
Associated Lab Samples: 92723769001
Blank
Reporting
Parameter
Units
Result
Limit
Total Solids
%
ND
LABORATORY CONTROL SAMPLE: R4056845-2
Spike
LCS
Parameter
Units
Conc.
Result
Total Solids
%
50.0
50.0
SAMPLE DUPLICATE: R4056845-3
L1723730-01
Dup
Parameter
Units
Result
Result
Total Solids
%
83.8
81.0
MDL Analyzed Qualifiers
04/11/24 07:34
LCS % Rec
% Rec Limits Qualifiers
100 90.0-110
Max
RPD RPD Qualifiers
3.42 10
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.
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
Date: 04/17/2024 09:22 AM without the written consent of Pace Analytical Services, LLC. Page 12 of 17

ceo
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
QUALIFIERS
Project: TCH-009
Pace Project No.: 92723769
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.
TN -The NELAC Institute.
ANALYTE QUALIFIERS
J Analyte detected below the reporting limit, therefore result is an estimate. This qualifier is also used for all TICs
M1 Matrix spike recovery exceeded QC limits. Batch accepted based on laboratory control sample (LCS) recovery.
N2 The lab does not hold NELAC/TNI accreditation for this parameter but other accreditations/certifications may apply. A
complete list of accreditations/certifications is available upon request.
P6 Matrix spike recovery was outside laboratory control limits due to a parent sample concentration notably higher than the
spike level.
PH The analyte failed the method required serial dilution test and/or subsequent post -spike criteria. These failures indicate
matrix interference.
R1 RPD value was outside control limits.
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
Date: 04/17/2024 09:22 AM without the written consent of Pace Analytical Services, LLC. Page 13 of 17

ceo
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
QUALITY CONTROL DATA CROSS REFERENCE TABLE
Project:
Pace Project No.:
TCH-009
92723769
Analytical
Lab ID
Sample ID
QC Batch Method
QC Batch
Analytical Method
Batch
92723769001
HH-16A
EPA 7199
846799
EPA 7199
846960
92723769001
HH-16A
3051
2267082
EPA6010D
2267082
92723769001
HH-16A
3051
2264697
EPA6020B
2264697
92723769001
HH-16A
7471A
2264739
EPA 7471 B
2264739
92723769001
HH-16A
SW-846
846560
92723769001
HH-16A
SM 2540 G
2264575
SM 2540G
2264575
Date: 04/17/2024 09:22 AM
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.
Page 14 of 17

DC#_Title: ENV-IFRM-HUNT-0083 v03_Sample Condition Upon Receipt
Effective Date: 11/29/2023
Laboratory receiving samples:
Asheville ❑ . Eden❑ Greenwood ❑ Huntersville ❑ Raleighz/Mechanicsville❑ Atlanta❑ Kernersville❑
Sample Condition Client Name: WV7T 92723769
Project #:
Courier: ❑F d Ex ❑UPS ❑LISPS ❑Client 1111111111111111111111❑ Commercial . .._ - Pt; '...,
92723769
Custody Seal Present? Zs ❑No seals Intact? Zs ❑No ❑N/A
Packing Material:
Thermometer:
2]"IR Gun ID:
Coole r Tem
Date/initials Person Examining Contents: 11
❑Bubble Wrap Bubble Bags ❑None r `A-
❑ Other Biological Tissue Frozen?
❑Yes [:]No [2N/A
w' I To 6S
-} Correction Factor:
1� Add/Subtract (°C)
Type of Ice: 21'wet ❑i3wue ❑None
Cooler Temp Corrected (°C):
USDA Regulated Soil ( EfN/A, water sample)
Did samples originate in a quarantine zone within the United States: CA, NY, or SC
(check marm)? F IYes VIN❑
should be above freezing to 6°C
Samples out of temp criteria. Samples an ice, cooling process
has begun
Did samplesorlginate from a foreign source (in terrj ationally,
includine Hawaii and PuPrtn Rirn)7 MY— IJ�Uvn
Comments/Discrepancy:
Chain of Custody Present?
i1Ycs
ONO
❑N/A
1.
Sam p les Arrived withi n Hold Ti me?
9Yes
❑No
❑N/A
Z.
Short Hold Time Analysis (t72 hr.)?
❑Yes
EfNo
❑N/A
3.
Rush Turn Around Time Requested?
El Yes
2 No
❑N/A
4.
Sufficient Volume?
E Yes
[]No
❑N/A
5.
Correct Containers Used?
Pace Containers Used?
E Yes
P Yes
❑No
❑No
❑N/A
[]N/A
6.
Containers Intact?
2ryes
❑No
❑]NN/A
7.
Dissolved analysis: Samples Field Filtered?
❑Yes
❑fro
2N/A
S.
5ample Labels Match COC?
-Includes Date/Time/ID/Analysis Matrix:
Yes
..'�
[]No
❑N/A
9.
Headspace in VOA Vials (>5-6mm)?
❑Yes
❑No
IJN/A
10.
Trip Blank Present?
Trip Blank Custody Seals Present?
❑Yes
[]Yes
❑No
❑No
N/A
R(N/A
11.
COMMENTS/SAMPLE DISCREPANCY
CLIENT NOTIFICATION/RESOLUTION
Person contacted:
Project Manager SCURF Review:
Project Manager 5RF Review:
Lot ID of split containers:
Date/Time:
Date:
Date:
Field Data Required? ❑Yes ❑No
Qualtrax ID: 69614 Page 1 of 2
Pace 15 of 17

DC# Title: ENV-FRM-HUN1-0083 03_Sarnple Condition Upon Receipt
i ruur,:cst=ins
Effective Date:11/29/2023
*Check mark top half of box If pH and/or dechlorination Is verified and
within the acceptance range for preservation samples.
Exceptions: VOA, Coliform, TOC, Oil and Grease, DROISO15 (water) DOC, LLHg
**Bottom half of box is to list number of bottles
***Check all unpreserved Nitrates for chlorine
Project # - #:92723769
PM: TMC Clue Date: 04/15/24
CLIENT: 92—Hart_Ral
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pH Adjustment Log for Preserved Samples
Sample ID
Type of Preservative
pH upon receipt
Date.preservatlon adjusted
Time preservation
adjusted
Amount of Preservatlye
added
Lot H
Note: Whenever there is a discrepancy affecting North Carolina compliance samples, a copy of this farm will he sent to the North Carolina DENR Certification Office ,Ii"e.
Out of hold, incorrect preservative, out oftemp, incorrect containers.
Qualtrax ID. 69614 Page 2 of 2
Paae 16 of 17

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Appendix B
Pre- and Post -Interim Remedial Measures Maintenance Conditions Photographs
hart � hickman
SMARTER ENVIRONMENTAL SOLUTIONS

Photograph 1: Embankment Area F (post-IRMs, 2020).
Photograph 2: Embankment Area F (post-IRM maintenance, 2024).
3921 Sunset Ridge Road, Suite 300 CHAPEL HILL POLICE PROPERTY
hart ^• hickman RALEIGH , NC 27612
919.847.4241(p) 919.847.4261(f) CHAPEL HILL, NORTH CAROLINA

Photograph 3: Storm diversion channel adjacent to police department parking lot (pre-IRM maintenance).
3921 Sunset Ridge Road, Suite 300 CHAPEL HILL POLICE PROPERTY
hart 1 hickman RALEIGH , NC 27612
919.847.4241(p) 919.847.4261(f) CHAPEL HILL, NORTH CAROLINA

0
0
U
Photograph 4: Storm diversion channel adjacent to police department parking lot (post-IRM maintenance).
3921 Sunset Ridge Road, Suite 300 CHAPEL HILL POLICE PROPERTY
hart 1 hickman RALEIGH , NC 27612
919.847.4241(p) 919.847.4261(f) CHAPEL HILL, NORTH CAROLINA

rj�►3.# .' ���^'^-tee: f�A: - �r � .. '. :':: -:.� �,: � i,�L�" ' � x ' a �
Photograph 5: Depositional CCPs along super -silt fence F-4 (F (pre-IRM maintenance).
Photograph 6: New standard silt fencing along super -silt fence F-4 (post-IRM maintenance).
111 3921 Sunset Ridge Road, Suite 300 CHAPEL HILL POLICE PROPERTY
hart ^• hickman RALEIGH , NC 27612
919.847.4241(p) 919.847.4261(f) CHAPEL HILL, NORTH CAROLINA

Photograph 7: New standard silt fencing along super -silt fence F-4 (post-IRM maintenance).
3921 Sunset Ridge Road, Suite 300 CHAPEL HILL POLICE PROPERTY
hart 1 hickman RALEIGH , NC 27612
919.847.4241(p) 919.847.4261(f) CHAPEL HILL, NORTH CAROLINA