HomeMy WebLinkAbout25046_Harrelson Ford Soil Import Request 20231107Hanley Environmental, PLLC
323 Manning Drive
Charlotte, North Carolina 28209
NC Engineering License P-2407
T: (704) 317-6970
www.hanleyenvironmental.com
Page | 1
November 7, 2023
Bill Schmithorst, PG
North Carolina Department of Environmental Quality
Division of Waste Management – Brownfields Redevelopment Section
1646 Mail Service Center
Raleigh, North Carolina 27699
Re: Soil Import Request
Harrelson Ford Brownfields Property
6500 South Boulevard
Charlotte, Mecklenburg County, North Carolina
NCDEQ Brownfields Project No. 25046-21-060
Project No. PJ23030
Dear Bill Schmithorst:
This Soil Import Request has been prepared on behalf of Tri Pointe Homes for the Harrelson
Ford Brownfields Property located at 6500 South Boulevard, Charlotte, Mecklenburg County,
North Carolina (the site). The site is undergoing redevelopment under the North Carolina
Department of Environmental Quality (NCDEQ) Brownfields Redevelopment Section (BRS)
(Brownfields Project No. 25046-21-060). Approval is being requested to import soil from the
Dynatech II, III, & IV brownfields properties (Brownfields Project Nos. 25001-21-060, 25067-
21-060, and 25068-21-060) located at Toomey Avenue and West Tremont Avenue, Charlotte,
North Carolina, to the site for use as fill material. This request has been prepared pursuant
to the NCDEQ-approved Environmental Management Plan (EMP) for the site.
Characterization of soils at the Dynatech properties was previously conducted by others as
documented in the Environmental Management Plan prepared by Hart & Hickman, PC dated
October 19, 2021. Report excerpts are included in Attachment 1. The report indicates that
twenty-nine (29) soil samples were collected for laboratory analysis in western and eastern
Soil Import Request
Harrelson Ford Brownfields Site
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portions of the site to evaluate the potential for impacts associated with former on-site
operations and to characterize soil in-situ within areas proposed for cut that may be
exported from the properties. Based on soil analytical results, soil management options were
selected for characterization sections as documented and approved in the Environmental
Management Plan. Soil management options are also shown on the Soil Characterization Areas
figure provided by the Dynatech properties prospective developer (included in Attachment
1).
The prospective developer of the Dynatech properties recently indicated the need to export
approximately 8,500 cubic yards (CYD) of soil stockpiled on the properties. Mr. Sam LoDebole
of Colony Commercial, Project Manager for the Dynatech site redevelopment, indicated that
the stockpiled soil is a combination of FCC-3 (4 to 12 ft depth), FCC-4 (4 to 12 ft depth), FCC-
5 (6 to 12 ft depth), and FCC-9 (6 to 8 ft depth). These areas were characterized as “pre-
approved for off-site management options” on the Soil Characterization Areas figure. Relevant
analytical information related to this request is summarized below:
No volatile organic compounds (VOCs) or semi-VOCs (SVOCs) were detected at
concentrations above their respective residential Preliminary Soil Remediation Goals
(PSRGs).
Selenium was detected at a concentration (2.5 mg/kg) above the protection of
groundwater PSRG (2.1 mg/kg) in the duplicate soil sample collected from FCC-4A.
Hexavalent chromium was detected at concentrations above its residential PSRG
(0.31 mg/kg) in most samples, with a maximum estimated concentration of 1.18
mg/kg.
No other constituents were reported at concentrations above their residential PSRGs.
A comparison between the Dynatech soil characterization analytical data and soil from the
Harrelson Ford site is provided below. Metals concentrations for both sites are summarized
in a single table in Table 1.
Soil Import Request
Harrelson Ford Brownfields Site
Page | 3
Low levels of VOCs and SVOCs have been detected at both properties. Concentrations
of VOCs and SVOCs at the Dynatech properties are below residential and protection
of groundwater PSRGs.
Selenium has been detected in site soils at concentrations above its protection of
ground PSRG (0.21 mg/kg) with a maximum estimated concentration of 2.98 mg/kg.
Detections of selenium at both properties were of similar concentrations and were
an order of magnitude below the residential PSRG (78 mg/kg).
Hexavalent chromium has been detected in site soils at concentrations above its
residential PSRG (0.31 mg/kg) with a maximum concentration detected of 1.47 mg/kg.
Detections of hexavalent chromium at both properties were of a similar magnitude.
While regional soil background concentrations for hexavalent chromium are not
readily available in published literature, the concentrations observed at both
properties were within the range of naturally occurring hexavalent chromium
commonly observed in regional soils based on professional experience.
To evaluate the risk associated with importing the stockpiled Dynatech II, III, & IV soil to the
site, Hanley Environmental used the most recent version of NCDEQ’s Risk Calculator (July
2023 version) (Attachment 2). As a conservative approach, the highest concentration of
each compound detected across samples collected from soil stockpile source was entered
into the risk calculator under a soil direct contact exposure scenario for a residential
receptor. The results of the conservative (worst case) risk calculations identified a
carcinogenic risk of 5.7x10-6 and non-carcinogenic hazard quotient of 0.092. These results
were below the NCDEQ Brownfields Redevelopment Section’s acceptable risk thresholds for
potential carcinogenic risks (10-4) and the acceptable level for non-carcinogenic hazard index
(1).
The information reviewed indicates that soil imported from Dynatech characterization areas
FCC-3, FCC-4, FCC-5 and FCC-9 is expected to result in acceptable risk levels under a
residential use scenario at the site. Approval is requested to import stockpiled soil from
Dynatech II, III, & IV for use as fill material at the site.
Soil Import Request
Harrelson Ford Brownfields Site
Page | 4
Please do not hesitate to contact the undersigned at (704) 317-6970 if you would like to
discuss this export request.
Sincerely,
Nick Hotzelt, PE David Hanley, PE
Project Engineer Principal Engineer
Hanley Environmental, PLLC
Attachments:
Table 1 – Summary Comparison of Soil Metals Analytical Results
Attachment 1 – Dynatech Environmental Management Plan Excerpts (October 19, 2021)
Attachment 2 – Risk Calculation Outputs
TABLE
Table 1 - Summary Comparison of Soil Metals Analytical Results
Dynatech II, III IV - FCC-3, FCC-4, FCC-5 and FCC-9 Areas (Brownfields No. 25001-21-060, 25067-21-060, and 25068-21-060) and Harrelson Ford (Brownfields No. 25046-21-060)
Arsenic Barium Cadmium Total
Chromium
Hexavalent
Chromium Lead Selenium Silver Mercury
5.8 580 3.0 360,000 3.8 270 2.1 3.4 1.00
0.68 3,100 1.4 23,000 0.31 400 78 78 2.3
3.0 47,000 20 350,000 6.5 800 1,200 1,200 9.7
1.0 - 18 50 - 1,000 1.0 - 10 7.0 - 300 NS ND - 50 <0.1 - 0.8 ND - 5.0 0.03 - 0.52
4.8 356 4.3 65 NS 16 0.42 NS 0.121
FCC-3A 6/21/2023 0.71 J 69.7 0.070 J 27.5 <0.311 24.4 <0.46 <0.23 0.091
FCC-3B 6/21/2023 0.62 J 110 <0.043 20.8 <0.318 9.9 0.78 J <0.21 0.034
FCC-4A 6/22/2023 <0.46 192 <0.046 44.8 0.837 J 6.7 1.9 <1.1 0.055
DUPLICATE-2 6/22/2023 <0.50 212 <0.050 41.4 0.651 J 5.8 2.5 <1.3 0.071
FCC-4B 6/22/2023 <0.51 323 <0.051 43.1 0.361 J 7.3 <0.51 <1.3 0.0081
FCC-5A 6/22/2023 0.87 J 63.7 0.14 23.2 1.14 J 49.4 1.4 <0.89 0.050
FCC-5B 6/22/2023 1.1 J 74.3 <0.039 48.3 1.18 J 24.6 <0.39 <0.97 0.054
FCC-9 6/23/2021 <0.47 104 0.073 J 80.8 1.11 J 13.4 1.7 <1.2 0.040
HL-10 8/3/2021 0.836 J 22.2 <0.0958 7.31 <0.286 4.61 0.350 J <0.0969 <0.0202
HL-17 8/3/2021 1.42 43.1 <0.0997 15.5 <0.297 8.98 0.580 J <0.101 <0.0210
HL-18 8/3/2021 2.77 94.1 <0.107 40.8 0.487 J 7.09 2.98 J <0.108 <0.0224
HL-20 8/3/2021 2.28 84 0.146 J 47.8 <0.366 11.4 1.02 J <0.124 <0.0259
HL-22 8/3/2021 1.89 114 <0.111 34.3 <0.332 7.66 1.33 J <0.113 <0.0234
HL-23 8/3/2021 0.621 J 16.4 <0.0966 27.1 0.603 J 9.1 <0.203 <0.0977 <0.0203
SB-DUP-1 8/3/2021 1.02 J 27.9 <0.0969 19.2 <0.289 7.53 0.668 J <0.0980 0.0420 J
SB-1 8/2/2021 0.567 B,J 301 <0.122 28.6 0.736 J 4.87 0.305 J <0.123 <0.0257
SB-2 8/3/2021 0.536 B,J 55.2 <0.104 17.5 0.875 J 5.99 <0.219 <0.609 <0.0219
SB-3 8/2/2021 0.210 B,J 11.8 <0.103 2.45 J <0.307 2.90 B <0.217 <0.104 <0.0482
SB-4 8/3/2021 0.324 B,J 10.1 <0.0990 9.44 0.865 J 4.39 <0.208 <0.100 <0.0463
SB-DUP-2 8/3/2021 0.403 B,J,ML 10.8 <0.0997 19.3 1.34 6.12 <0.210 <0.101 <0.0210 ML,R1
SB-5 8/3/2021 0.454 B,J 5.82 <0.0975 14.8 1.35 5.51 <0.0456 <0.205 <0.0986
SB-6 8/2/2021 0.541 B,J 149 <0.104 14.7 0.715 J 1.99 B,J <0.219 <0.105 <0.0219
SB-7 8/2/2021 0.456 B,J 142 <0.102 16.9 0.882 J 3.00 B <0.215 <0.103 <0.0215
SB-8 8/2/2021 0.932 B,J 38.0 <0.101 12.9 <0.302 5.32 0.242 J <0.102 0.0260 J
BG-1 8/2/2021 0.910 B,J 81.6 <0.0971 21.2 <0.290 12.6 0.543 J <0.0982 0.0226 J
BG-2 8/2/2021 0.813 B,J 123 0.107 J 11.5 <0.282 11.5 0.379 J <0.0958 <0.0199
BG-3 8/2/2021 0.750 B,J 59.7 <0.0922 0.989 J <0.275 7.38 0.408 J <0.0933 <0.0194
MP-18 5/20/2022 0.93 116 0.063 J 26.0 1.47 7.3 0.25 J 0.23 J <0.0098
MP-43 5/20/2022 0.99 227 0.1 33.3 1.27 11.2 0.23 J 0.17 J <0.0087
Notes:
1. North Carolina Department of Environmental Quality (DEQ) Preliminary Soil Remediation Goals (PSRGs) dated July 2023.
2. Range and mean values of background metals for North Carolina soils taken from Elements in North American Soils by Drugan and Chekiri, 2005.
Cadmium and silver concentrations were taken from Southeastern and Conterminous U.S. Soils.
3. Results presented in milligrams per kilogram (mg/kg)
4. ND = not detected; NS = not specified
5. J = Result is less than the reporting limit but greater than or equal to the method detection limit and the concentration is an approximate value.
6. B = Analyte was detected in the associated method blank.
7. ML = Matrix spike recovery and/or matrix spike duplicate recovery was below laboratory control limits. Result may be biased low.
8. R1 = RPD value was outside control limits.
9. Bold values exceed the residential PSRG and background concentrations.
10. Underlined values exceed the protection of groundwater PSRG and background concentrations.
11. Compounds reported to the laboratory method detection limits.
12. Harrelson Ford samples were collected prior to soil excavation activities and some sample locations were subsequently excavated and disposed off site.
13. Analytical data summarized from Dynatech II, III, & IV properties includes only characterization areas FCC-3, FCC-4, FCC-5 and FCC-9 and not other areas of the properties.
Total RCRA Metals by EPA Method 6020B/7471B/7199 (mg/kg)
Protection of Groundwater PSRG
Dynatech II, III, & IV13
(Brownfields Nos.
25001-21-060,
25067-21-060,
25068-21-060)
Harrelson Ford
(Brownfields No. 25046-
21-060)
Industrial/Commercial PSRG
Residential PSRG
Site
NCDEQ IHSB PSRGs1
Regional Background
Metals in Soil2
Range
Mean
Sample ID Sample Date
ATTACHMENT 1
Dynatech Environmental Management Plan Excerpts (October 19, 2021)
Table 1
Summary of Soil Analytical Data
Dynatech II, III, & IV
Charlotte, North Carolina
H&H Job No. ABS-002
Evaluation Area
Sample ID
Date
Depth (ft bgs)4 3-10 15 12-16 7 5-10 7 5-10 15 12-18
Sample Type Grab Composite Grab Composite Grab Composite Grab Composite Grab Composite Range
Units
VOCs (8260)
1,2,3-Trichlorobenzene <0.0052 NA <0.0061 NA <0.0055 NA <0.0056 NA <0.0067 NA 0.33 13 190 -- --
1,2,4-Trichlorobenzene <0.0054 NA <0.0063 NA <0.0057 NA <0.0058 NA <0.0069 NA 4.1 12 55 -- --
1,2,4-Trimethylbenzene 0.0043 J NA 0.0077 NA 0.0132 NA 0.0079 NA <0.0023 NA 12 63 370 -- --
1,3,5-Trimethylbenzene <0.0022 NA 0.0042 J NA <0.0023 NA <0.0023 NA <0.0028 NA 11 56 320 -- --
Acetone 0.129 NA <0.0485 NA 0.0817 J NA <0.0441 NA <0.053 NA 25 12,000 140,000 -- --
Benzene <0.0026 NA <0.003 NA <0.0027 NA <0.0027 NA <0.0033 NA 0.01 1.2 5.4 -- --
Carbon tetrachloride <0.0024 NA <0.0028 NA <0.0025 NA <0.0026 NA <0.0031 NA 0.0023 0.69 3 -- --
Chlorobenzene <0.0012 NA <0.0015 NA <0.0013 NA <0.0013 NA <0.0016 NA 0.68 58 280 -- --
Ethylbenzene <0.003 NA <0.0035 NA <0.0031 NA <0.0032 NA <0.0038 NA 13 6.1 27 -- --
Naphthalene 0.152 NA 0.253 NA 0.051 NA 0.0278 NA <0.0043 NA 0.39 2.1 8.8 -- --
Tetrachloroethene 0.0337 NA <0.0024 NA <0.0021 NA <0.0022 NA <0.0026 NA 0.0063 17 82 -- --
Toluene 0.0082 NA <0.0021 NA 0.0225 NA 0.008 NA <0.0023 NA 8.3 990 9,700 -- --
m&p-Xylene 0.0197 NA <0.0052 NA 0.0299 NA 0.0135 J NA <0.0056 NA 9.8 120 500 -- --
o-Xylene 0.0103 NA <0.0033 NA 0.0172 NA 0.0073 NA <0.0036 NA 9.8 140 590 -- --
Xylene (Total) 0.030 NA <0.0043 NA 0.0471 NA 0.0208 NA <0.0047 NA 9.9 120 530 -- --
n-Butylbenzene <0.003 NA <0.0036 NA <0.0032 NA <0.0032 NA <0.0039 NA 4.5 780 12,000 -- --
n-Propylbenzene <2.3 NA <0.0027 NA <0.0024 NA <0.0024 NA <0.0029 NA 2.6 780 5,100 -- --
p-Isopropyltoluene 0.132 NA <0.0037 NA 0.009 NA 0.0057 J NA 0.0053 J NA NE NE NE -- --
SVOCs (8270)
Acenaphthene NA <1.32 NA <0.666 NA <0.140 NA <0.140 NA <1.46 16 720 9,000 -- --
Acenaphthylene NA <1.32 NA <1.32 NA <0.666 NA <0.14 NA <0.14 NE NE NE -- --
Anthracene NA 4.05 NA 1.11 J NA <0.131 NA 0.144 J NA <1.36 1,300 3,600 45,000 -- --
Benzo(a)anthracene NA 12.0 NA 3.76 NA 0.466 NA 0.550 NA <1.39 0.35 1.1 21 -- --
Benzo(a)pyrene NA 9.90 NA 3.26 NA 0.430 NA 0.488 NA <1.44 0.12 0.11 2.1 -- --
Benzo(b)fluoranthene NA 14.2 NA 4.59 NA 0.588 NA 0.675 NA <1.39 1.2 1.1 21 -- --
Benzo(g,h,i)perylene NA 7.36 NA 2.39 NA 0.311 J NA 0.365 J NA <1.61 NE NE NE -- --
Benzo(k)fluoranthene NA 5.51 NA 1.57 J NA 0.254 J NA 0.261 J NA <1.46 12 11 210 -- --
Chrysene NA 12.1 NA 3.72 NA 0.468 NA 0.573 NA <1.51 36 110 2,100 -- --
Dibenz(a,h)anthracene NA 1.92 J NA <0.729 NA <0.154 NA <0.154 NA <1.60 0.38 0.11 2.1 -- --
Fluoranthene NA 25.3 NA 7.83 NA 0.930 NA 1.14 NA <1.42 670 480 6,000 -- --
Fluorene NA <1.32 NA <0.666 NA <0.140 NA <0.140 NA <1.46 110 480 6,000 -- --
2-Methylnaphthalene NA <1.50 NA <0.758 NA <0.160 NA <0.160 NA <1.66 3.1 48 600 -- --
Indeno(1,2,3-cd)pyrene NA 6.70 NA 2.06 NA 0.270 J NA 0.323 J NA <1.64 3.9 1.1 21 -- --
Phenanthrene NA 14.9 NA 4.43 NA 0.498 NA 0.644 NA <1.36 NE NE NE -- --
Pyrene NA 18.9 NA 6.05 NA 0.823 NA 0.891 NA <1.69 440 360 4,500 -- --
bis(2-Ethylhexyl)phthalate NA <1.46 NA <0.735 NA <0.155 NA <0.155 NA <1.61 14 39 160 -- --
Metals (6010/7471/7199)
Arsenic NA 1.9 J NA <0.43 NA 11.1 NA 5.3 NA <0.47 5.8 0.68 3.0 1.0 - 18 --
Barium NA 180 NA 188 NA 148 NA 118 NA 137 580 3,100 47,000 50 - 1,000 --
Cadmium NA 0.11 NA <0.043 NA 0.38 NA 0.18 NA <0.047 3 14 200 1.0 - 10 (3)--
Chromium (total)NA 78.1 NA 75.6 NA 28.6 NA 27.1 NA 13.1 -- -- --7.0 - 300 --
Chromium (VI)NA 1.36 NA 2.05 NA 0.565 J NA 0.606 J NA <0.325 3.8 0.31 6.5 NS --
Chromium (III)NA 76.74 NA 73.55 NA 28.04 NA 27.1 NA 13.1 360,000 23,000 350,000 NS --
Lead NA 114 NA 21.2 NA 190 NA 67.3 NA 7.5 400 800 270 ND - 50 --
Mercury NA 0.064 NA 0.031 NA 0.41 NA 0.12 NA 0.020 NE 4.7 70 0.03 - 0.52 --
Selenium NA 0.64 J NA 1.2 NA 1.5 NA 1.6 NA <0.47 2.1 78 1,200 <0.1 - 0.8 --
Silver NA <0.22 NA <1.1 NA <0.23 NA <0.24 NA <0.23 3.4 78 1,200 ND - 5.0 (3)--
Metals (6010 TCLP)
Chromium NA 0.099 NA NA NA NA NA NA NA NA -- -- -- --5 mg/L
Lead NA <0.00327 NA NA NA 0.039 NA NA NA NA -- -- -- --5 mg/L
Notes:
1 North Carolina Department of Environmental Qualit DEQ Inactive Hazardous Sites Branch IHSB Preliminar Soil Remediation Goals PSRGs dated June 2021
2 Ran e and mean values of back round metals for North Carolina soils taken from Elements in North American Soils b Dra un and Chekiri, 20053 Cd and A concentrations were taken from Southeastern and Conterminous U.S. Soils Dra un and Chekiri, 20054 Environmental Protection A enc EPA Maximum Concentration of Contaminants for Toxicit Characteristic Leachin Procedure TCLP re ulator level dated November 2004
Samples included in the table above were collected b Partner in December 2020, Januar 2021, and June 2021.
Soil concentrations are reported in milli rams per kilo ram m /k .
Compound concentrations are reported to the laborator method detection limits.
Laborator anal tical methods are shown in parentheses.With the exception of metals, onl constituents detected in at least one sample are shown in the table above.Shaded values exceed the Protection of Groundwater PSRGs. Bold values exceed the Residential PSRGs and back round values in the case of metals.
Underlined values exceed the Industrial/Commercial PSRGs
VOCs = volatile or anic compounds; SVOCs = semi-volatile or anic compounds; ft b s= feet below round surface; m /L = milli rams per liter
NA = not anal zed; NS = not specified; NE = not established; -- = not applicable
J = Compound was detected above the laborator method detection limit, but below the laborator reportin limit resultin in a laborator estimated concentration.
mg/kg
FCC-2A/Duplicate-1
6/21/2021
FCC-1A FCC-1B
Proposed Area of Cut Screening Criteria
FCC-2B
Protection of
Groundwater
PSRG (1)
Residential
PSRGs (1)
Industrial/
Commercial
PSRGs (1)
Background
Metals (2)Maximum
Concentration
for TCLP (4)
https://harthick.sharepoint.com/sites/MasterFiles‐1/Shared Documents/AAA‐Master Projects/Abacus Capital (ABS)/Dynatech II/EMP/Tables/ABS‐002 Data Tables.xlsx
Table 1 (Page 1 of 5)
Hart & Hickman, PC
Table 1
Summary of Soil Analytical Data
Dynatech II, III, & IV
Charlotte, North Carolina
H&H Job No. ABS-002
Evaluation Area
Sample ID
Date
Depth (ft bgs)7 4-10 13 12-14 9 4-10 9 4-10 13 10-14
Sample Type Grab Composite Grab Composite Grab Composite Grab Composite Grab Composite Range
Units
VOCs (8260)
1,2,3-Trichlorobenzene <0.0054 NA <0.0056 NA <0.0071 NA <0.0067 NA <0.0096 NA 0.33 13 190 -- --
1,2,4-Trichlorobenzene <0.0057 NA <0.0058 NA <0.0073 NA <0.0070 NA <0.010 NA 4.1 12 55 -- --
1,2,4-Trimethylbenzene <0.0018 NA <0.0019 NA <0.0024 NA <0.0023 NA <0.0033 NA 12 63 370 -- --
1,3,5-Trimethylbenzene <0.0023 NA <0.0023 NA <0.0029 NA <0.0028 NA <0.004 NA 11 56 320 -- --
Acetone <0.0433 NA 0.103 J NA <0.0562 NA <0.0535 NA <0.0765 NA 25 12,000 140,000 -- --
Benzene <0.0027 NA <0.0028 NA <0.0035 NA <0.0033 NA <0.0047 NA 0.01 1.2 5.4 -- --
Carbon tetrachloride <0.0025 NA <0.0026 NA <0.0033 NA <0.0031 NA <0.0045 NA 0.0023 0.69 3 -- --
Chlorobenzene <0.0013 NA <0.0013 NA <0.0017 NA <0.0016 NA <0.0023 NA 0.68 58 280 -- --
Ethylbenzene <0.0031 NA <0.0032 NA <0.0041 NA <0.0039 NA <0.0056 NA 13 6.1 27 -- --
Naphthalene 0.0237 NA 0.0109 NA <0.0046 NA <0.0044 NA <0.0063 NA 0.39 2.1 8.8 -- --
Tetrachloroethene <0.0021 NA <0.0022 NA <0.0028 NA <0.0026 NA <0.0038 NA 0.0063 17 82 -- --
Toluene 0.0071 NA <0.0020 NA <0.0025 NA <0.0024 NA <0.0034 NA 8.3 990 9,700 -- --
m&p-Xylene <0.0046 NA <0.0048 NA <0.0060 NA <0.0057 NA <0.0082 NA 9.8 120 500 -- --
o-Xylene <0.0030 NA <0.0031 NA <0.0039 NA <0.0037 NA <0.0053 NA 9.8 140 590 -- --
Xylene (Total)<0.0038 NA <0.0040 NA <0.0050 NA <0.0048 NA <0.0068 NA 9.9 120 530 -- --
n-Butylbenzene <0.0032 NA <0.0033 NA <0.0041 NA <0.0039 NA <0.0056 NA 4.5 780 12,000 -- --
n-Propylbenzene <0.0024 NA <0.0025 NA <0.0031 NA <0.0030 NA <0.0042 NA 2.6 780 5,100 -- --
p-Isopropyltoluene <0.0033 NA <0.0034 NA <0.0043 NA <0.0041 NA <0.0059 NA NE NE NE -- --
SVOCs (8270)
Acenaphthene NA <0.142 NA <0.145 NA <0.146 NA <0.149 NA <0.157 16 720 9,000 -- --
Acenaphthylene NA <1.46 NA <0.142 NA <0.145 NA <0.149 NA <0.146 NE NE NE -- --
Anthracene NA <0.132 NA <0.135 NA <0.136 NA <0.139 NA <0.146 1,300 3,600 45,000 -- --
Benzo(a)anthracene NA <0.135 NA <0.138 NA <0.139 NA <0.141 NA <0.149 0.35 1.1 21 -- --
Benzo(a)pyrene NA <0.140 NA <0.143 NA <0.144 NA <0.146 NA <0.154 0.12 0.11 2.1 -- --
Benzo(b)fluoranthene NA 0.184 J NA <0.138 NA <0.139 NA <0.141 NA <0.149 1.2 1.1 21 -- --
Benzo(g,h,i)perylene NA <0.157 NA <0.160 NA <0.161 NA <0.164 NA <0.173 NE NE NE -- --
Benzo(k)fluoranthene NA <0.142 NA <0.145 NA <0.146 NA <0.149 NA <0.157 12 11 210 -- --
Chrysene NA <0.147 NA <0.150 NA <0.151 NA <0.154 NA <0.162 36 110 2,100 -- --
Dibenz(a,h)anthracene NA <0.156 NA <0.159 NA <0.160 NA <0.163 NA <0.172 0.38 0.11 2.1 -- --
Fluoranthene NA 0.306 J NA <0.142 NA <0.142 NA <0.145 NA <0.153 670 480 6,000 -- --
Fluorene NA <0.142 NA <0.145 NA <0.146 NA <0.149 NA <0.157 110 480 6,000 -- --
2-Methylnaphthalene NA <0.162 NA <0.165 NA <0.166 NA <0.160 NA <0.178 3.1 48 600 -- --
Indeno(1,2,3-cd)pyrene NA <0.159 NA <0.163 NA <0.164 NA <0.167 NA <0.176 3.9 1.1 21 -- --
Phenanthrene NA 0.221 J NA <0.135 NA <0.136 NA <0.139 NA <0.146 NE NE NE -- --
Pyrene NA 0.303 J NA <0.168 NA <0.169 NA <0.172 NA <0.181 440 360 4,500 -- --
bis(2-Ethylhexyl)phthalate NA <0.157 NA <0.160 NA <0.161 NA <0.164 NA <0.173 14 39 160 -- --
Metals (6010/7471/7199)
Arsenic NA 0.71 J NA 0.62 J NA <0.46 NA <0.50 NA <0.51 5.8 0.68 3.0 1.0 - 18 --
Barium NA 69.7 NA 110 NA 192 NA 212 NA 323 580 3,100 47,000 50 - 1,000 --
Cadmium NA 0.070 J NA <0.043 NA <0.046 NA <0.050 NA <0.051 3 14 200 1.0 - 10 (3)--
Chromium (total)NA 27.5 NA 20.8 NA 44.8 NA 41.4 NA 43.1 -- -- --7.0 - 300 --
Chromium (VI)NA <0.311 NA <0.318 NA 0.837 J NA 0.651 J NA 0.361 J 3.8 0.31 6.5 NS --
Chromium (III)NA 27.5 NA 20.8 NA 43.96 NA 40.75 NA 42.74 360,000 23,000 350,000 NS --
Lead NA 24.4 NA 9.9 NA 6.7 NA 5.8 NA 7.3 400 800 270 ND - 50 --
Mercury NA 0.091 NA 0.034 NA 0.055 NA 0.071 NA 0.0081 NE 4.7 70 0.03 - 0.52 --
Selenium NA <0.46 NA 0.78 J NA 1.9 NA 2.5 NA <0.51 2.1 78 1,200 <0.1 - 0.8 --
Silver NA <0.23 NA <0.21 NA <1.1 NA <1.3 NA <1.3 3.4 78 1,200 ND - 5.0 (3)--
Metals (6010 TCLP)
Chromium NA NA NA NA NA NA NA NA NA NA -- -- -- --5 mg/L
Lead NA NA NA NA NA NA NA NA NA NA -- -- -- --5 mg/L
Notes:
1 North Carolina Department of Environmental Qualit DEQ Inactive Hazardous Sites Branch IHSB Preliminar Soil Remediation Goals PSRGs dated June 2021
2 Ran e and mean values of back round metals for North Carolina soils taken from Elements in North American Soils b Dra un and Chekiri, 20053 Cd and A concentrations were taken from Southeastern and Conterminous U.S. Soils Dra un and Chekiri, 20054 Environmental Protection A enc EPA Maximum Concentration of Contaminants for Toxicit Characteristic Leachin Procedure TCLP re ulator level dated November 2004
Samples included in the table above were collected b Partner in December 2020, Januar 2021, and June 2021.
Soil concentrations are reported in milli rams per kilo ram m /k .
Compound concentrations are reported to the laborator method detection limits.
Laborator anal tical methods are shown in parentheses.With the exception of metals, onl constituents detected in at least one sample are shown in the table above.Shaded values exceed the Protection of Groundwater PSRGs. Bold values exceed the Residential PSRGs and back round values in the case of metals.
Underlined values exceed the Industrial/Commercial PSRGs
VOCs = volatile or anic compounds; SVOCs = semi-volatile or anic compounds; ft b s= feet below round surface; m /L = milli rams per liter
NA = not anal zed; NS = not specified; NE = not established; -- = not applicable
J = Compound was detected above the laborator method detection limit, but below the laborator reportin limit resultin in a laborator estimated concentration.
mg/kg
FCC-3A
Protection of
Groundwater
PSRG (1)
FCC-4A/Duplicate-2
6/21/2021 Residential
PSRGs (1)
Industrial/
Commercial
PSRGs (1)
Background
Metals (2)Maximum
Concentration
for TCLP (4)
Proposed Area of Cut Screening Criteria
6/22/2021
FCC-3B FCC-4B
https://harthick.sharepoint.com/sites/MasterFiles‐1/Shared Documents/AAA‐Master Projects/Abacus Capital (ABS)/Dynatech II/EMP/Tables/ABS‐002 Data Tables.xlsx
Table 1 (Page 2 of 5)
Hart & Hickman, PC
Table 1
Summary of Soil Analytical Data
Dynatech II, III, & IV
Charlotte, North Carolina
H&H Job No. ABS-002
Evaluation Area
Sample ID
Date
Depth (ft bgs)7 5-8 9 8-13 5 4-8 3 2-4 3 2-4
Sample Type Grab Composite Grab Composite Grab Composite Grab Composite Grab Composite Range
Units
VOCs (8260)
1,2,3-Trichlorobenzene 0.0091 NA <0.0053 NA 0.0089 NA <0.0048 NA <0.0056 NA 0.33 13 190 -- --
1,2,4-Trichlorobenzene <0.0051 NA <0.0055 NA <0.0057 NA <0.0050 NA <0.0058 NA 4.1 12 55 -- --
1,2,4-Trimethylbenzene <0.0017 NA <0.0018 NA <0.0019 NA <0.0016 NA 0.0044 J NA 12 63 370 -- --
1,3,5-Trimethylbenzene <0.0021 NA <0.0022 NA <0.0023 NA <0.0020 NA <0.0023 NA 11 56 320 -- --
Acetone <0.0392 NA <0.0418 NA 0.105 J NA <0.0380 NA <0.0442 NA 25 12,000 140,000 -- --
Benzene <0.0024 NA <0.0026 NA 0.0041 J NA <0.0024 NA <0.0027 NA 0.01 1.2 5.4 -- --
Carbon tetrachloride <0.0023 NA <0.0024 NA <0.0025 NA <0.0022 NA <0.0026 NA 0.0023 0.69 3 -- --
Chlorobenzene <0.0012 NA <0.0013 NA <0.0013 NA <0.0011 NA <0.0013 NA 0.68 58 280 -- --
Ethylbenzene <0.0028 NA <0.0030 NA <0.0032 NA <0.0028 NA <0.0032 NA 13 6.1 27 -- --
Naphthalene 0.0090 NA <0.0034 NA 0.0209 NA 0.0132 NA 0.0333 NA 0.39 2.1 8.8 -- --
Tetrachloroethene <0.0019 NA <0.0021 NA 0.0128 NA 0.0091 NA 0.0056 J NA 0.0063 17 82 -- --
Toluene 0.0051 J NA <0.0018 NA 0.0101 NA 0.0339 NA 0.0236 NA 8.3 990 9,700 -- --
m&p-Xylene <0.0042 NA <0.0045 NA 0.0147 NA <0.0040 NA <0.0047 NA 9.8 120 500 -- --
o-Xylene <0.0027 NA <0.0029 NA <0.0030 NA <0.0026 NA <0.0030 NA 9.8 140 590 -- --
Xylene (Total)<0.0035 NA <0.0037 NA 0.0147 NA <0.0034 NA <0.0039 NA 9.9 120 530 -- --
n-Butylbenzene <0.0029 NA <0.0031 NA <0.0032 NA <0.0028 NA <0.0033 NA 4.5 780 12,000 -- --
n-Propylbenzene <0.0022 NA <0.0023 NA <0.0024 NA <0.0021 NA <0.0025 NA 2.6 780 5,100 -- --
p-Isopropyltoluene <0.0030 NA <0.0032 NA <0.0033 NA <0.0029 NA <0.0034 NA NE NE NE -- --
SVOCs (8270)
Acenaphthene NA <0.643 NA <0.139 NA <0.135 NA <1.36 NA 1.91 J 16 720 9,000 -- --
Acenaphthylene NA <0.157 NA <0.643 NA <0.139 NA <0.135 NA <1.33 NE NE NE -- --
Anthracene NA <0.599 NA <0.129 NA <0.126 NA 1.99 J NA 3.01 J 1,300 3,600 45,000 -- --
Benzo(a)anthracene NA <0.610 NA <0.132 NA <0.128 NA 4.83 NA 6.02 0.35 1.1 21 -- --
Benzo(a)pyrene NA <0.632 NA <0.137 NA <0.133 NA 3.65 J NA 4.52 0.12 0.11 2.1 -- --
Benzo(b)fluoranthene NA <0.610 NA <0.132 NA <0.128 NA 5.10 NA 6.44 1.2 1.1 21 -- --
Benzo(g,h,i)perylene NA <0.710 NA <0.153 NA <0.149 NA 2.44 J NA 3.11 J NE NE NE -- --
Benzo(k)fluoranthene NA <0.643 NA <0.139 NA <0.135 NA 2.18 J NA 2.58 J 12 11 210 -- --
Chrysene NA <0.665 NA <0.144 NA <0.140 NA 4.47 NA 5.76 36 110 2,100 -- --
Dibenz(a,h)anthracene NA <0.704 NA <0.152 NA <0.148 NA <1.49 NA <1.46 0.38 0.11 2.1 -- --
Fluoranthene NA <0.626 NA <0.135 NA <0.131 NA 11.1 NA 14.7 670 480 6,000 -- --
Fluorene NA <0.643 NA <0.139 NA <0.135 NA <1.36 NA 1.93 J 110 480 6,000 -- --
2-Methylnaphthalene NA <0.732 NA <0.158 NA <0.154 NA <0.154 NA <1.52 3.1 48 600 -- --
Indeno(1,2,3-cd)pyrene NA <0.721 NA <0.156 NA <0.151 NA 2.15 J NA 2.75 J 3.9 1.1 21 -- --
Phenanthrene NA <0.599 NA <0.129 NA <0.126 NA 7.66 NA 11.7 NE NE NE -- --
Pyrene NA <0.743 NA <0.161 NA <0.156 NA 8.51 NA 10.9 440 360 4,500 -- --
bis(2-Ethylhexyl)phthalate NA <0.710 NA <0.153 NA <0.149 NA <1.50 NA <1.47 14 39 160 -- --
Metals (6010/7471/7199)
Arsenic NA 0.87 J NA 1.1 J NA 3.0 NA 1.4 J NA 1.9 5.8 0.68 3.0 1.0 - 18 --
Barium NA 63.7 NA 74.3 NA 55.1 NA 92.4 NA 107 580 3,100 47,000 50 - 1,000 --
Cadmium NA 0.14 NA <0.039 NA 4.6 NA <0.047 NA <0.038 3 14 200 1.0 - 10 (3)--
Chromium (total)NA 23.2 NA 48.3 NA 30.1 NA 48.2 NA 22.7 -- -- --7.0 - 300 --
Chromium (VI)NA 1.14 J NA 1.18 J NA 0.342 J NA 0.543 J NA 0.478 J 3.8 0.31 6.5 NS --
Chromium (III)NA 22.06 NA 47.12 NA 29.76 NA 47.66 NA 22.22 360,000 23,000 350,000 NS --
Lead NA 49.4 NA 24.6 NA 703 NA 16.4 NA 12.9 400 800 270 ND - 50 --
Mercury NA 0.050 NA 0.054 NA 0.051 NA 0.048 NA 0.067 NE 4.7 70 0.03 - 0.52 --
Selenium NA 1.4 NA <0.39 NA <0.43 NA <0.47 NA <0.38 2.1 78 1,200 <0.1 - 0.8 --
Silver NA <0.89 NA <0.97 NA <0.22 NA <0.24 NA <0.19 3.4 78 1,200 ND - 5.0 (3)--
Metals (6010 TCLP)
Chromium NA NA NA NA NA NA NA NA NA NA -- -- -- --5 mg/L
Lead NA NA NA NA NA <0.0045 NA NA NA NA -- -- -- --5 mg/L
Notes:
1 North Carolina Department of Environmental Qualit DEQ Inactive Hazardous Sites Branch IHSB Preliminar Soil Remediation Goals PSRGs dated June 2021
2 Ran e and mean values of back round metals for North Carolina soils taken from Elements in North American Soils b Dra un and Chekiri, 20053 Cd and A concentrations were taken from Southeastern and Conterminous U.S. Soils Dra un and Chekiri, 20054 Environmental Protection A enc EPA Maximum Concentration of Contaminants for Toxicit Characteristic Leachin Procedure TCLP re ulator level dated November 2004
5 Soil sample FCC-6 and FCC-7A were collected in areas proposed for placement of fill.
Samples included in the table above were collected b Partner in December 2020, Januar 2021, and June 2021.
Soil concentrations are reported in milli rams per kilo ram m /k .
Compound concentrations are reported to the laborator method detection limits.Laborator anal tical methods are shown in parentheses.Shaded values exceed the Protection of Groundwater PSRGs. Bold values exceed the Residential PSRGs and back round values in the case of metals.
Underlined values exceed the Industrial/Commercial PSRGs
VOCs = volatile or anic compounds; SVOCs = semi-volatile or anic compounds; ft b s= feet below round surface; m /L = milli rams per liter
NA = not anal zed; NS = not specified; NE = not established; -- = not applicable
J = Compound was detected above the laborator method detection limit, but below the laborator reportin limit resultin in a laborator estimated concentration.
Screening Criteria
Maximum
Concentration
for TCLP (4)
mg/kg
6/23/2021 Residential
PSRGs (1)
Industrial/
Commercial
PSRGs (1)
Background
Metals (2)
FCC-6 (5)
6/22/2021
FCC-5BFCC-5A
Protection of
Groundwater
PSRG (1)
Proposed Area of Cut
FCC-7A/Duplicate-3 (5)
https://harthick.sharepoint.com/sites/MasterFiles‐1/Shared Documents/AAA‐Master Projects/Abacus Capital (ABS)/Dynatech II/EMP/Tables/ABS‐002 Data Tables.xlsx
Table 1 (Page 3 of 5)
Hart & Hickman, PC
Table 1
Summary of Soil Analytical Data
Dynatech II, III, & IV
Charlotte, North Carolina
H&H Job No. ABS-002
Evaluation Area
Sample ID
Date
Depth (ft bgs)7 4-8 1 0-5 7 6-8 7 6-8
Sample Type Grab Composite Grab Composite Grab Composite Grab Composite Range
Units
VOCs (8260)
1,2,3-Trichlorobenzene 0.0934 NA <0.0078 NA <0.0056 NA <0.0060 NA 0.33 13 190 -- --
1,2,4-Trichlorobenzene 0.0727 NA <0.0081 NA <0.0058 NA <0.0062 NA 4.1 12 55 -- --
1,2,4-Trimethylbenzene 0.0125 NA 0.0413 NA 0.0082 NA <0.0020 NA 12 63 370 -- --
1,3,5-Trimethylbenzene 0.0670 NA 0.032 NA <0.0023 NA <0.0025 NA 11 56 320 -- --
Acetone <0.0405 NA 0.191 J NA <0.0442 NA 0.0779 J NA 25 12,000 140,000 -- --
Benzene 0.0342 NA <0.0038 NA <0.0027 NA <0.0029 NA 0.01 1.2 5.4 -- --
Carbon tetrachloride <0.0024 NA <0.0036 NA <0.0026 NA <0.0028 NA 0.0023 0.69 3 -- --
Chlorobenzene <0.0012 NA <0.0019 NA <0.0013 NA <0.0014 NA 0.68 58 280 -- --
Ethylbenzene 0.0098 NA <0.0045 NA <0.0032 NA <0.0034 NA 13 6.1 27 -- --
Naphthalene 0.1810 NA 0.1620 NA 0.0202 NA <0.0039 NA 0.39 2.1 8.8 -- --
Tetrachloroethene <0.0020 NA 0.0068 J NA <0.0022 NA <0.0023 NA 0.0063 17 82 -- --
Toluene 0.0761 NA 0.0389 NA 0.0360 NA <0.0021 NA 8.3 990 9,700 -- --
m&p-Xylene 0.0531 NA <0.0066 NA 0.0182 NA <0.0051 NA 9.8 120 500 -- --
o-Xylene 0.0118 NA <0.0043 NA 0.0104 NA <0.0033 NA 9.8 140 590 -- --
Xylene (Total) 0.0649 NA <0.0055 NA 0.0286 NA <0.0042 NA 9.9 120 530 -- --
n-Butylbenzene 0.0065 NA <0.0045 NA <0.0033 NA <0.0035 NA 4.5 780 12,000 -- --
n-Propylbenzene 0.0060 J NA <0.0034 NA <0.0025 NA <0.0026 NA 2.6 780 5,100 -- --
p-Isopropyltoluene 0.0077 NA <0.0047 NA <0.0034 NA <0.0036 NA NE NE NE -- --
SVOCs (8270)
Acenaphthene NA <0.132 NA <0.686 NA <0.132 NA <0.147 16 720 9,000 -- --
Acenaphthylene NA <1.32 NA <0.686 NA <0.132 NA <0.147 NE NE NE -- --
Anthracene NA 0.127 J NA 1.59 J NA <0.123 NA <0.137 1,300 3,600 45,000 -- --
Benzo(a)anthracene NA 0.397 NA 3.63 NA <0.125 NA <0.139 0.35 1.1 21 -- --
Benzo(a)pyrene NA 0.374 J NA 2.77 NA <0.130 NA <0.144 0.12 0.11 2.1 -- --
Benzo(b)fluoranthene NA 0.497 NA 4.03 NA <0.125 NA <0.139 1.2 1.1 21 -- --
Benzo(g,h,i)perylene NA 0.253 J NA 1.98 NA <0.146 NA <0.162 NE NE NE -- --
Benzo(k)fluoranthene NA 0.175 J NA 1.54 J NA <0.132 NA <0.147 12 11 210 -- --
Chrysene NA 0.385 NA 3.73 NA <0.137 NA <0.152 36 110 2,100 -- --
Dibenz(a,h)anthracene NA <0.144 NA <0.751 NA <0.145 NA <0.161 0.38 0.11 2.1 -- --
Fluoranthene NA 0.728 NA 9.26 NA <0.129 NA <0.143 670 480 6,000 -- --
Fluorene NA <0.132 NA <0.686 NA <0.132 NA <0.147 110 480 6,000 -- --
2-Methylnaphthalene NA <1.50 NA <0.780 NA <0.150 NA <0.167 3.1 48 600 -- --
Indeno(1,2,3-cd)pyrene NA 0.228 J NA 1.72 J NA <0.148 NA <0.165 3.9 1.1 21 -- --
Phenanthrene NA 0.376 NA 6.89 NA <0.123 NA <0.137 NE NE NE -- --
Pyrene NA 0.564 NA 6.50 NA <0.153 NA <0.170 440 360 4,500 -- --
bis(2-Ethylhexyl)phthalate NA <0.145 NA <0.757 NA <0.146 NA <0.162 14 39 160 -- --
Metals (6010/7471/7196)
Arsenic NA 3.2 NA 1.2 J NA <0.47 NA <0.47 5.8 0.68 3.0 1.0 - 18 --
Barium NA 99.3 NA 97.3 NA 129 NA 104 580 3,100 47,000 50 - 1,000 --
Cadmium NA 0.63 NA 0.088 NA <0.047 NA 0.073 J 3 14 200 1.0 - 10 (3)--
Chromium (total)NA 79.7 NA 30.0 NA 113 NA 80.8 -- -- --7.0 - 300 --
Chromium (VI)NA <0.283 NA 0.877 J NA 1.30 NA 1.11 J 3.8 0.31 6.5 NS --
Chromium (III)NA 79.7 NA 29.12 NA 111.7 NA 79.69 360,000 23,000 350,000 NS --
Lead NA 120 NA 29.0 NA 9.3 NA 13.4 400 800 270 ND - 50 --
Mercury NA 0.015 NA 0.025 NA 0.049 NA 0.040 NE 4.7 70 0.03 - 0.52 --
Selenium NA <0.42 NA <0.42 NA <0.47 NA 1.7 2.1 78 1,200 <0.1 - 0.8 --
Silver NA <0.21 NA <0.21 NA <1.2 NA <1.2 3.4 78 1,200 ND - 5.0 (3)--
Metals (6010D TCLP)
Chromium NA NA NA NA NA NA NA NA -- -- -- --5 mg/L
Lead NA NA NA NA NA NA NA NA -- -- -- --5 mg/L
Notes:
1 North Carolina Department of Environmental Qualit DEQ Inactive Hazardous Sites Branch IHSB Preliminar Soil Remediation Goals PSRGs dated June 2021
2 Ran e and mean values of back round metals for North Carolina soils taken from Elements in North American Soils b Dra un and Chekiri, 20053 Cd and A concentrations were taken from Southeastern and Conterminous U.S. Soils Dra un and Chekiri, 20054 Environmental Protection A enc EPA Maximum Concentration of Contaminants for Toxicit Characteristic Leachin Procedure TCLP re ulator level dated November 2004
5 Soil sample FCC-7B and FCC-9 were collected in areas proposed for placement of fill.
Samples included in the table above were collected b Partner in December 2020, Januar 2021, and June 2021.
Soil concentrations are reported in milli rams per kilo ram m /k .
Compound concentrations are reported to the laborator method detection limits.Laborator anal tical methods are shown in parentheses.Shaded values exceed the Protection of Groundwater PSRGs. Bold values exceed the Residential PSRGs and back round values in the case of metals.
Underlined values exceed the Industrial/Commercial PSRGs
VOCs = volatile or anic compounds; SVOCs = semi-volatile or anic compounds; ft b s= feet below round surface; m /L = milli rams per liter
NA = not anal zed; NS = not specified; NE = not established; -- = not applicable
J = Compound was detected above the laborator method detection limit, but below the laborator reportin limit resultin in a laborator estimated concentration.
Maximum
Concentration
for TCLP (4)
mg/kg
6/23/2021
Proposed Area of Cut Screening Criteria
Protection of
Groundwater
PSRG (1)
Residential
PSRGs (1)
Industrial/
Commercial
PSRGs (1)
Background
Metals (2)
FCC-7B (5)FCC-9 (5)FCC-8BFCC-8A
https://harthick.sharepoint.com/sites/MasterFiles‐1/Shared Documents/AAA‐Master Projects/Abacus Capital (ABS)/Dynatech II/EMP/Tables/ABS‐002 Data Tables.xlsx
Table 1 (Page 4 of 5)
Hart & Hickman, PC
Table 1
Summary of Soil Analytical Data
Dynatech II, III, & IV
Charlotte, North Carolina
H&H Job No. ABS-002
Evaluation Area
Sample ID B-1 B-2 B-3 (5)B-4 B-7 B-8 B-9 B-10 B-1* B-2* B-3* B-5 B-6
Date 6/24/2021 6/23/2021 6/24/2021
Depth (ft bgs)4 10 10 4 13 6 4 4 8 8 8 9 14
Sample Type Range
Units
VOCs (8260)
1,2,3-Trichlorobenzene <0.0093 <0.0057 <0.0037 <0.0038 <0.0048 <0.0054 <0.0051 <0.0049 <0.0067 <0.0074 <0.0058 <0.0058 <0.0057 0.33 13 190 -- --
1,2,4-Trichlorobenzene <0.0097 <0.0060 <0.0039 <0.0040 <0.005 <0.0056 <0.0053 <0.0051 <0.0070 <0.0077 <0.0061 <0.0061 <0.0059 4.1 12 55 -- --
1,2,4-Trimethylbenzene 0.020 <0.0019 <0.0013 <0.0013 <0.0016 0.0104 <0.0017 <0.0017 <0.0023 <0.0025 <0.0020 <0.002 <0.0019 12 63 370 -- --
1,3,5-Trimethylbenzene <0.0039 <0.0024 <0.0016 <0.0016 <0.0020 0.0068 <0.0021 <0.0021 <0.0028 <0.0031 <0.0024 <0.0024 <0.0024 11 56 320 -- --
Acetone 0.100 J <0.0460 <0.3000 <0.0300 <0.0382 <0.0429 0.128 <0.0393 <0.0530 <0.0590 <0.0460 <0.0464 <0.0454 25 12,000 140,000 -- --
Benzene <0.0046 <0.0028 <0.0018 <0.0019 <0.0024 <0.0027 <0.0025 <0.0024 <0.0033 <0.0037 <0.0029 <0.0029 <0.0028 0.01 1.2 5.4 -- --
Carbon tetrachloride <0.0043 <0.0027 <0.0017 <0.0018 <0.0022 0.0037 J <0.0024 <0.0023 <0.0031 <0.0034 <0.0027 <0.0027 <0.0026 0.0023 0.69 3 -- --
Chlorobenzene <0.0022 <0.0014 <0.00089 <0.00091 <0.0011 0.0034 J <0.0012 <0.0012 <0.0016 <0.0018 <0.0014 <0.0014 <0.0014 0.68 58 280 -- --
Ethylbenzene 0.0068 J <0.0033 <0.0022 <0.0022 <0.0028 <0.0031 <0.0029 <0.0029 <0.0039 <0.0043 <0.0034 <0.0034 <0.0033 13 6.1 27 -- --
Naphthalene 0.028 <0.0037 <0.0024 <0.0025 <0.0031 0.446 0.144 0.0113 <0.0044 <0.0048 <0.0038 <0.0038 <0.0037 0.39 2.1 8.8 -- --
Tetrachloroethene <0.0036 <0.0022 <0.0015 <0.0015 <0.0019 <0.0021 <0.002 <0.0019 <0.0026 <0.0029 <0.0023 <0.0023 <0.0022 0.0063 17 82 -- --
Toluene 0.014 <0.0020 <0.0013 <0.0013 0.0166 0.0035 J 0.0033 J <0.0017 <0.0024 <0.0026 <0.0020 0.213 0.0183 8.3 990 9,700 -- --
m&p-Xylene 0.026 <0.0049 <0.0032 <0.0032 <0.0014 <0.0046 0.0072 J <0.0042 <0.0057 <0.0063 <0.0049 <0.0049 <0.0048 9.8 120 500 -- --
o-Xylene 0.0085 J <0.0031 <0.0020 <0.0021 <0.0026 <0.003 0.0044 J <0.0027 <0.0037 <0.0041 <0.0032 <0.0032 <0.0031 9.8 140 590 -- --
Xylene (Total)0.035 <0.0041 <0.0026 <0.0027 <0.0034 <0.0038 0.0116 J <0.0035 <0.0047 <0.0052 <0.0041 <0.0041 <0.0040 9.9 120 530 -- --
n-Butylbenzene <0.0054 <0.0034 <0.0022 <0.0022 <0.0028 <0.0032 <0.0030 <0.0029 <0.0039 <0.0043 <0.0034 <0.0034 <0.0033 4.5 780 12,000 -- --
n-Propylbenzene <0.0041 <0.0025 <0.0016 <0.0017 <0.0021 <0.0024 <0.0022 <0.0022 <0.0029 <0.0033 <0.0026 <0.0026 <0.0025 2.6 780 5,100 -- --
p-Isopropyltoluene <0.0057 <0.0035 <0.0023 <0.0023 <0.0029 0.0068 0.369 0.0072 <0.0041 <0.0045 <0.0035 <0.0036 <0.0035 NE NE NE -- --
SVOCs (8270)
Acenaphthene <0.12 0.27 J <0.085 <0.087 <0.130 2.51 J <0.654 <0.647 <0.00066 <0.00073 <0.00065 <0.151 <0.144 16 720 9,000 -- --
Acenaphthylene <0.11 <0.0098 <0.078 <0.080 <0.130 <1.28 <0.654 <0.647 <0.00060 <0.00066 0.0011 J <0.151 <0.144 NE NE NE -- --
Anthracene <0.12 0.43 <0.086 <0.0087 <0.121 8.5 0.622 J <0.602 <0.00054 <0.00060 0.00074 J <0.141 <0.134 1,300 3,600 45,000 -- --
Benzo(a)anthracene <0.15 1.5 <0.11 <0.11 <0.123 23.6 1.71 J <0.614 <0.00096 <0.0011 0.0035 J <0.143 <0.136 0.35 1.1 21 -- --
Benzo(a)pyrene <0.20 1.2 <0.14 <0.15 <0.128 19.6 1.39 J <0.636 <0.00066 <0.00073 0.0032 J <0.148 <0.141 0.12 0.11 2.1 -- --
Benzo(b)fluoranthene <0.19 1.9 <0.13 <0.14 <0.123 28.5 1.98 <0.614 <0.00094 <0.0010 0.0056 J <0.143 <0.136 1.2 1.1 21 -- --
Benzo(g,h,i)perylene <0.18 0.71 <0.13 <0.13 <0.144 14.7 0.936 J <0.714 <0.0014 <0.0016 0.0028 J <0.167 <0.159 NE NE NE -- --
Benzo(k)fluoranthene <0.20 0.77 <0.14 <0.14 <0.130 11.0 0.737 J <0.647 <0.00053 <0.00058 0.0024 J <0.151 <0.144 12 11 210 -- --
Chrysene <0.14 1.6 <0.096 <0.098 <0.135 23.5 1.69 J <0.669 <0.00064 <0.00071 0.0039 J <0.156 <0.149 36 110 2,100 -- --
Dibenz(a,h)anthracene <0.19 0.21 J <0.13 <0.13 <0.142 4.17 <0.716 <0.708 <0.0015 <0.0016 <0.0015 <0.165 <0.158 0.38 0.11 2.1 -- --
Fluoranthene <0.14 2.9 <0.10 <0.10 <0.127 53.0 3.44 0.637 J <0.0017 <0.0018 0.0064 J <0.147 <0.140 670 480 6,000 -- --
Fluorene <0.13 0.18 J <0.089 <0.090 <0.130 3.03 J <0.654 <0.647 <0.00056 <0.00062 <0.00055 <0.151 <0.144 110 480 6,000 -- --
2-Methylnaphthalene <0.12 <0.10 <0.084 <0.086 <0.148 <1.46 <0.744 <0.736 <0.00080 <0.00089 0.00081 J <0.172 <0.164 3.1 48 600 -- --
Indeno(1,2,3-cd)pyrene <0.22 0.66 <0.15 <0.15 <0.146 13.3 0.837 J <0.725 <0.0012 <0.0013 0.0023 J <0.169 <0.161 3.9 1.1 21 -- --
Phenanthrene <0.12 1.9 <0.083 <0.085 <0.121 31.6 2.64 <0.602 <0.0015 <0.0016 0.0028 J <0.141 <0.134 NE NE NE -- --
Pyrene <0.13 2.5 <0.091 <0.093 <0.150 37.3 3.01 <0.747 <0.0014 <0.0015 0.0067 J <0.174 <0.166 440 360 4,500 -- --
bis(2-Ethylhexyl)phthalate <0.15 <0.13 <0.11 <0.11 <0.144 <1.420 9.07 <0.714 NA NA NA <0.167 <0.159 14 39 160 -- --
Metals (6010/7471/7196)
Arsenic 1.1 J 1.7 J <0.40 0.64 J <0.35 2.9 3.20 1.6 J 2.7 4.4 3.6 <0.48 1.1 J 5.8 0.68 3.0 1.0 - 18 --
Barium 91.4 88.5 39.9 144 128 96.3 73.4 37.8 94.5 453 154 291 237 580 3,100 47,000 50 - 1,000 --
Cadmium 0.085 J 0.062 J <0.040 0.049 J <0.035 0.19 0.19 0.086 <0.050 0.17 0.061 J <0.048 0.31 3 14 200 1.0 - 10 (3)--
Chromium (total) 20.5 108 166 49.4 359 18.3 20.3 12.9 52.7 22.1 113 17.7 9.0 -- -- --7.0 - 300 --
Chromium (VI)<6.8 <6.2 <5.1 <5.0 <0.285 0.566 J 2.43 0.791 J NA NA NA <0.357 <0.322 3.8 0.31 6.5 NS --
Chromium (III) 20.5 108 166 49.4 359 17.7 17.9 12.1 NA NA NA 17.7 9.0 360,000 23,000 350,000 NS --
Lead 12.3 22.4 1.6 5.7 <0.17 24.7 10.7 8.8 6.9 11.9 4.7 1.8 5.0 400 800 270 ND - 50 --
Mercury 0.066 0.059 0.0053 0.0088 <0.0016 0.048 0.077 0.091 0.032 0.19 0.012 <0.0018 0.0051 NE 4.7 70 0.03 - 0.52 --
Selenium <0.48 0.74 J 0.47 J <0.37 <0.35 <0.48 <0.42 0.48 J 2.1 2.6 2.7 <0.48 <0.46 2.1 78 1,200 <0.1 - 0.8 --
Silver <0.24 0.21 J <0.20 0.21 J <0.86 3.0 <0.21 <0.21 0.29 J 0.31 J 0.31 J <1.2 <0.23 3.4 78 1,200 ND - 5.0 (3)--
Metals (6010D TCLP)
Chromium NA NA NA NA NA NA NA NA NA NA NA NA NA -- -- -- --5 mg/L
Lead NA NA NA NA NA NA NA NA NA NA NA NA NA -- -- -- --5 mg/L
Notes:
1 North Carolina Department of Environmental Qualit DEQ Inactive Hazardous Sites Branch IHSB Preliminar Soil Remediation Goals PSRGs dated June 2021
2 Ran e and mean values of back round metals for North Carolina soils taken from Elements in North American Soils b Dra un and Chekiri, 20053 Cd and A concentrations were taken from Southeastern and Conterminous U.S. Soils Dra un and Chekiri, 20054 Environmental Protection A enc EPA Maximum Concentration of Contaminants for Toxicit Characteristic Leachin Procedure TCLP re ulator level dated November 2004
5 Soil sample B-3 was collected in an area proposed for placement of fill.
Samples included in the table above were collected b Partner in December 2020, Januar 2021, and June 2021.
B-1* throu h B-3* were advanced on 2320 Toome Avenue and are labeled with an asterisk to differentiate between borin s B-1 throu h B-3 advanced east of Toome Avenue.
Soil concentrations are reported in milli rams per kilo ram m /k .Compound concentrations are reported to the laborator method detection limits.Laborator anal tical methods are shown in parentheses.Shaded values exceed the Protection of Groundwater PSRGs.
Bold values exceed the Residential PSRGs and back round values in the case of metals.
Underlined values exceed the Industrial/Commercial PSRGs
VOCs = volatile or anic compounds; SVOCs = semi-volatile or anic compounds; ft b s= feet below round surface; m /L = milli rams per liter
NA = not anal zed; NS = not specified; NE = not established; -- = not applicableJ = Compound was detected above the laborator method detection limit, but below the laborator reportin limit resultin in a laborator estimated concentration.
Screening Criteria
Maximum
Concentration
for TCLP (4)
mg/kg
Protection of
Groundwater
PSRG (1)
Residential
PSRGs (1)
Industrial/
Commercial
PSRGs (1)
Background
Metals (2)12/2/20201/13/2021 6/21/2021
Grab
2320 Toomey Avenue Proposed Area of Cut
https://harthick.sharepoint.com/sites/MasterFiles‐1/Shared Documents/AAA‐Master Projects/Abacus Capital (ABS)/Dynatech II/EMP/Tables/ABS‐002 Data Tables.xlsx
Table 1 (Page 5 of 5)
Hart & Hickman, PC
REVISION NO. 0
JOB NO. ABS-002
DATE: 9-27-21
FIGURE NO. 2
DYNATECH II, III, & IV
TOOMEY AVENUE AND WEST TREMONT AVENUE
CHARLOTTE, NORTH CAROLINA
SITE AND SAMPLE LOCATION MAP
LEGEND
BROWNFIELDS PROPERTY BOUNDARY
PARCEL BOUNDARY
SOIL CHARACTERIZATION AREA
SOIL BORING LOCATION
SOIL CHARACTERIZATION ALIQUOT
BORING LOCATION
CO-LOCATED SOIL AND GROUNDWATER
SAMPLE LOCATION
SOIL GAS SAMPLE LOCATION
2923 South Tryon Street-Suite 100
Charlotte, North Carolina 28203
704-586-0007(p) 704-586-0373(f)
License # C-1269 / #C-245 Geology
TOO
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A
V
E
N
U
E
W TREMONT AVENU
E
WO
O
D
C
R
E
S
T
A
V
E
N
U
E
FC-24
FC-22
FC-20
FC-21
FC-23
FC-25
FC-19
FC-18
FC-17
FC-26
FC-27
FC-28
FC-29
FC-32
FC-31
FC-30
FC-15
FC-16
FC-1
FC-5
FC-12
FC-14
FC-13
FC-9
FC-10FC-11
FC-7 FC-8
FC-2
FC-4
FC-3
FC-6
B-9
B-10
B-7
B-8/MW-3
B-6/MW-2
B-5/MW-1
MW-4/4R
B-2/B-2GW
B-1/B-1GW
B-4B-4GW
B-3/B-3GW
FCC-8
FCC-7
FCC-6
FCC-9
FCC-5
FCC-2 FCC-4
FCC-3
FCC-1
NOTES:
1.PARCEL DATA AND AERIAL IMAGERY OBTAINED FROM
MECKLENBURG COUNTY GIS, 2021.
2.SOIL SAMPLES B-1* THROUGH B-3*, GROUNDWATER
SAMPLES B-1GW* THROUGH B3-GW*, AND SOIL GAS
SAMPLES SG-1 THROUGH SG-3 WERE COLLECTED ON
THE WESTERN SITE PARCEL BY PARTNER IN
DECEMBER 2020.
3.SOIL SAMPLES B-1 THROUGH B-4, GROUNDWATER
SAMPLES B-1GW THROUGH B-4GW, AND MSVG-1
THROUGH MSVG-7 WERE COLLECTED ON THE
EASTERN SITE PARCELS BY PARTNER IN JANUARY
2021.
4.BORINGS B-5 THROUGH B-10 AND FC-1 THROUGH FC-32
ADVANCED BY PARTNER IN JUNE 2021.
5.MONITORING WELLS MW-1 THROUGH MW-3 WERE
INSTALLED BY PARTNER IN JUNE 2021. WELLS MW-4
AND MW-4R WERE INSTALLED BY OTHERS IN
SEPTEMBER 2000.
6.SOIL GAS SAMPLES MSG-4 THROUGH MSG-22 WERE
COLLECTED BY PARTNER IN MAY AND JUNE 2021.
7.BPN = BROWNFIELDS PROJECT NUMBER
B-2*/B-2GW*
B-1*/B-1GW*
B-3*/B-3GW*
SG-2
SG-1SG-3
MSVG-5
MSVG-7
MSVG-6
MSVG-1
MSVG-2
MSVG-3
MSVG-4
MSG-15
MSG-19
MSG-16
MSG-17
704 W. TREMONT AVENUE2325 TOOMEY AVENUE
728 W. TREMONT AVENUE
2213 TOOMEY AVENUE
2330 TOOMEY AVENUE
POWERS SITE BROWNFIELDS PROPERTY
(BPN 20045-16-060)
MSG-1
MSG-2
MSG-3
MSG-22
MSG-21
MSG-20
MSG-18
MSG-14
MSG-12
MSG-13
MSG-10
MSG-11
MSG-9
MSG-8
MSG-7MSG-4
MSG-5
MSG-6
M:
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REVISION NO. 0
JOB NO. ABS-002
DATE: 8-9-21
FIGURE NO. 3
DYNATECH II, III, & IV
TOOMEY AVENUE AND WEST TREMONT AVENUE
CHARLOTTE, NORTH CAROLINA
SOIL COMPOUND CONCENTRATION MAP
2923 South Tryon Street-Suite 100
Charlotte, North Carolina 28203704-586-0007(p) 704-586-0373(f)License # C-1269 / #C-245 Geology
TOO
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W TREMONT AVENUE
WOODCREST AVENUE
FC-24
FC-22
FC-20
FC-21
FC-23
FC-25
FC-19
FC-18
FC-17
FC-26
FC-27
FC-28
FC-29
FC-32
FC-31
FC-30
FC-15
FC-16
FC-1
FC-5
FC-12
FC-14
FC-13
FC-9
FC-10FC-11
FC-7 FC-8
FC-2
FC-4
FC-3
FC-6
B-9
B-10
B-7
B-8
B-6
B-5 B-2
B-1
B-4
B-3
FCC-8
FCC-7
FCC-6
FCC-9
FCC-5
FCC-2
FCC-4
FCC-3
FCC-1
NOTES:
1. PARCEL DATA OBTAINED FROM MECKLENBURG COUNTY
GIS, 2021.
2. SHADED CONCENTRATIONS INDICATE AN EXCEEDANCE
OF THE DEQ IHSB PROTECTION OF GROUNDWATER
PSRGs.
3.BOLD CONCENTRATIONS INDICATE AN EXCEEDANCE OF
THE DEQ IHSB RESIDENTIAL PSRGs.
4.UNDERLINED CONCENTRATIONS INDICATE AN
EXCEEDANCE OF THE DEQ IHSB INDUSTRIAL/
COMMERCIAL PSRGs.
5. ONLY CONCENTRATIONS THAT EXCEED THE DEQ IHSB
PSRGs ARE SHOWN.
6. CONCENTRATIONS ARE REPORTED IN MILLIGRAMS PER
KILOGRAM (mg/kg).
7. J = COMPOUND WAS DETECTED ABOVE THE
LABORATORY METHOD DETECTION LIMIT, BUT WAS
BELOW THE LABORATORY REPORTING LIMIT, RESULTING
IN A LABORATORY ESTIMATED CONCENTRATION.
8. DEQ = NORTH CAROLINA DEPARTMENT OF
ENVIRONMENTAL QUALITY
IHSB = INACTIVE HAZARDOUS SITES BRANCH
PSRGs = PRELIMINARY SOIL REMEDIATION GOALS (JUNE
2021)
CR (VI) = HEXAVALENT CHROMIUM
PCE = TETRACHLOROETHYLENE
NA = NOT ANALYZED
B-2*
B-1*
B-3*
LEGEND
BROWNFIELDS PROPERTY BOUNDARY
PARCEL BOUNDARY
SOIL CHARACTERIZATION AREA
EXISTING BUILDING FOOTPRINT
PROPOSED BUILDING
PROPOSED PARKING AREA
SOIL BORING LOCATION
SOIL CHARACTERIZATION ALIQUOT
BORING LOCATION
CO-LOCATED SOIL AND GROUNDWATER
SAMPLE LOCATION
FCC-1A 4 3-10
PCE 0.0337 NA
BENZO(A)ANTHRACENE NA 12.0
BENZO(A)PYRENE NA 9.90
BENZO(B)FLUORANTHENE NA 14.2
DIBENZA(A,H)ANTHRACENE NA 1.92 J
IDENO(1,2,3-CD)PYRENE NA 6.70
CR (VI)NA 1.36
FCC-1B 12-16
BENZO(A)ANTHRACENE 3.76
BENZO(A)PYRENE 3.26
BENZO(B)FLUORANTHENE 4.59
IDENO(1,2,3-CD)PYRENE 2.06
CR (VI)2.05
FCC-2A / DUPLICATE-1 5-10
BENZO(A)ANTHRACENE 0.466 / 0.550
BENZO(A)PYRENE 0.430 / 0.488
CR (VI)0.565 J / 0.606 J
FCC-4A / DUPLICATE-2 4-10
CR (VI)0.837 J / 0.651 J
SELENIUM 2.5 (DUPLICATE)
FCC-4B 10-14
CR (VI)0.361 J
FCC-5A 5-8
CR (VI)1.14 J
FCC-5B 8-13
CR (VI)1.18 J
FCC-6 5 4-8
PCE 0.0128 NA
LEAD NA 703
CADMIUM NA 4.6
CR (VI)NA 0.342 J
FCC-7A / DUPLICATE-3 3 2-4
PCE 0.0091 / 0.0056 J NA
BENZO(A)ANTHRACENE NA 4.83 / 6.02
BENZO(A)PYRENE NA 3.65 J / 4.52
BENZO(B)FLUORANTHEN NA 5.10 / 6.44
IDENO(1,2,3-CD)PYRENE NA 2.15 J / 2.75 J
CR (VI)NA 0.543 J / 0.478 J
FCC-7B 7 4-8
BENZENE 0.0342 NA
BENZO(A)ANTHRACENE NA 0.397
BENZO(A)PYRENE NA 0.374 J
FCC-8A 1 0-5
PCE 0.0068 J NA
BENZO(A)ANTHRACENE NA 3.63
BENZO(A)PYRENE NA 2.77
BENZO(B)FLUORANTHEN NA 4.03
IDENO(1,2,3-CD)PYRENE NA 1.72 J
CR (VI)NA 0.877 J
FCC-8B 6-8
CR (VI)1.30
FCC-9 6-8
CR (VI)1.11 J
B-1*8
SELENIUM 2.1
B-2*8
SELENIUM 2.6
B-3*8
SELENIUM 2.7
B-2 10
BENZO(A)ANTHRACENE 1.5
BENZO(A)PYRENE 1.2
BENZO(B)FLUORANTHENE 1.9
DIBENZ(A,H)ANTHRACENE 0.21 J
CR (VI)0.565 J / 0.606 J
B-8 6
CARBON TETRACHLORIDE 0.0037 J
NAPHTHALENE 0.446
BENZO(A)ANTHRACENE 23.6
BENZO(A)PYRENE 19.6
BENZO(B)FLUORANTHENE 28.5
DIBENZ(A,H)ANTHRACENE 4.17
IDENO(1,2,3-CD)PYRENE 13.3
CR (VI)0.566 J
B9 4
BENZO(A)ANTHRACENE 1.71 J
BENZO(A)PYRENE 1.39 J
BENZO(B)FLUORANTHENE 1.98
CR (VI)2.43
B-10 4
CR (VI)0.791 J
FCC-6 5 4-8
PCE 0.0128 NA
LEAD NA 703
CADMIUM NA 4.6
CR (VI)NA 0.342 J
CONSTITUENT CONCENTRATION
(mg/kg)
SAMPLE ID SAMPLE
DEPTH (FBGS)
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Appendix D
Summary of Soil Management Options
Dynatech II, III, &IV
Charlotte, North Carolina
H&H Project No. ABS-002
Characterization
Section
DEPTH
(ft)1
MANAGEMENT OPTIONS2 PROPOSED CUT OR
FILL AREA
FCC-1A 3-10 MSWLF, BFP under cap Cut
FCC-1B 12-16 MSWLF, BFP under cap Cut
FCC-2A 5-10 MSWLF, BFP under cap Cut
FCC-2B 12-18 Old 27, LCID, CDLF, MSWLF, BFP Cut
FCC-3A 4-10 Old 27, LCID, CDLF, MSWLF, BFP Cut
FCC-3B 12-14 Old 27, LCID, CDLF, MSWLF, BFP Cut
FCC-4A 4-10 Old 27, LCID, CDLF, MSWLF, BFP Cut
FCC-4B 10-14 Old 27, LCID, CDLF, MSWLF, BFP Cut
FCC-5A
5-8 Old 27, LCID, CDLF, MSWLF, BFP Primarily Fill – limited cut
(0-5 ft) along property
oundar
FCC-5B
8-13 Old 27, LCID, CDLF, MSWLF, BFP Primarily Fill – limited cut
(0-5 ft) along property
oundar
FCC-6
4-8 MSWLF, BFP Fill – limited cut (0-2 ft) in
central portion of
characterization are
FCC-7A 2-4 MSWLF, BFP under cap Fill
FCC-7B 4-8 MSWLF, BFP under cap Fill
FCC-8A 0-5 MSWLF, BFP under cap Cut
FCC-8B 6-8 Old 27, LCID CDLF, MSWLF, BFP Cut
FCC-9 6-8 Old 27, LCID CDLF, MSWLF, BFP Fill
Notes:
1) Depth listed is total depth of available analytical data. Additional sampling would potentially be required beyond these depths prior to export.
2) CDLF = Construction & Demolition landfill; MSWLF = Municipal Solid Waste landfill (MSWLF) facility; Old 27 = Old 27 Landfill at 114 Tate Street, Mount Holly, NC;
BFP= Dynatech Brownfields Property; ft bgs = feet below ground surface)
3) Shallow soil in characterization sections FCC-1 (0-3 ft bgs), FCC-2 (0-5 ft bgs), FCC-3 (0-4 ft bgs), and FCC-4 (0-4 ft bgs) will be re-used on-Site (if possible). If shallow
soils cannot be re-used on-Site, then soil characterization sampling will be completed in accordance with the EMP prior to transporting the material off-Site.
FCC-8
FCC-7
FCC-6
FCC-9
FCC-5
FCC-2 FCC-4
FCC-3
FCC-1
REVISION NO. 0
JOB NO. ABS-002
DATE: 10-29-21
FIGURE NO. 2
DYNATECH II, III, & IV
TOOMEY AVENUE AND WEST TREMONT AVENUE
CHARLOTTE, NORTH CAROLINA
SOIL CHARACTERIZATION AREAS
LEGEND
BROWNFIELDS PROPERTY BOUNDARY
PARCEL BOUNDARY
SOIL CHARACTERIZATION AREA
CHARACTERIZATION AREA
PRE-APPROVED FOR OFF-SITE
MANAGEMENT OPTIONS
PORTIONS OF THE CHARACTERIZATION
AREA ARE PRE-APPROVED FOR
OFF-SITE MANAGEMENT OPTIONS
CHARACTERIZATION AREA MUST BE
KEPT ON-SITE UNDER A CAP OR
TRANSPORTED TO A MSWLF
2923 South Tryon Street-Suite 100
Charlotte, North Carolina 28203
704-586-0007(p) 704-586-0373(f)
License # C-1269 / #C-245 Geology
TOO
M
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A
V
E
N
U
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W TREMONT AVENU
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WO
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C
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S
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V
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N
U
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FCC-8
FCC-7
FCC-6
FCC-9
FCC-5
FCC-2 FCC-4
FCC-3
FCC-1
NOTES:
1.PARCEL DATA AND AERIAL IMAGERY OBTAINED FROM
MECKLENBURG COUNTY GIS, 2021.
2.SHALLOW SOIL IN CHARACTERIZATION SECTIONS FCC-1
(0-3 FT BGS), FCC-2 (0-5 FT BGS), FCC-3 (0-4 FT BGS),
AND FCC-4 (0-4 FT BGS) WILL BE RE-USED ON-SITE (IF
POSSIBLE). IF SHALLOW SOILS CANNOT BE RE-USED
ON SITE, THEN SOIL CHARACTERIZATION SAMPLING
WILL BE COMPLETED IN ACCORDANCE WITH THE
ENVIRONMENTAL MANAGEMENT PLAN (EMP) PRIOR TO
TRANSPORTING THE MATERIAL OFF-SITE.
3.BPN = BROWNFIELDS PROJECT NUMBER
CDLF = CONSTRUCTION & DEMOLITION LANDFILL
MSWLF = MUNICIPAL SOILD WASTE LANDFILL
OLD 27 = OLD 27 LANDFILL AT 114 TATE STREET,
MOUNT HOLLY, NC
BFP = DYNATECH BROWNFIELDS PROPERTY
FT BGS = FEET BELOW GROUND SURFACE
704 W. TREMONT AVENUE2325 TOOMEY AVENUE
728 W. TREMONT AVENUE
2213 TOOMEY AVENUE
2330 TOOMEY AVENUE
POWERS SITE BROWNFIELDS PROPERTY
(BPN 20045-16-060)
CHARACTERIZATION
SECTION
DEPTH
(FT BGS)MANAGEMENT OPTIONS
FCC-1A 3-10 MSWLF, BFP UNDER CAP
FCC-1B 12-16 MSWLF, BFP UNDER CAP
FCC-2A 5-10 MSWLF, BFP UNDER CAP
FCC-2B 12-18 OLD 27, LCID, CDLF, MSWLF, BFP
FCC-3A 4-10 OLD 27, LCID, CDLF, MSWLF, BFP
FCC-3B 12-14 OLD 27, LCID, CDLF, MSWLF, BFP
FCC-4A 4-10 OLD 27, LCID, CDLF, MSWLF, BFP
FCC-4B 10-14 OLD 27, LCID, CDLF, MSWLF, BFP
FCC-5A 5-8 OLD 27, LCID, CDLF, MSWLF, BFP
FCC-5B 8-13 OLD 27, LCID, CDLF, MSWLF, BFP
FCC-6 4-8 MSWLF, BFP UNDER CAP
FCC-7A 2-4 MSWLF, BFP UNDER CAP
FCC-7B 4-8 MSWLF, BFP UNDER CAP
FCC-8A 0-5 MSWLF, BFP UNDER CAP
FCC-8B 6-8 OLD 27, LCID, CDLF, MSWLF, BFP
FCC-9 6-8 OLD 27, LCID, CDLF, MSWLF, BFP
PROPOSED
FILL AREA
PROPOSED
FILL AREA
PROPOSED
FILL AREA
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ATTACHMENT 2
Risk Calculator Outputs
DEQ Risk Calculator - Direct Contact - Resident Soil
Version Date: July 2023
Basis: May 2023 EPA RSL Table
Site ID:
Exposure Unit ID: Dynatech FCC-3, FCC-4, FCC-5 and FCC-9 Soils
* - Note that inhalation on this calculator refers to outdoor inhalation of volatiles and particulates, not indoor inhalation associated with vapor intrusion.
CAS # Chemical Name:
Ingestion
Concentration
(mg/kg)
Dermal
Concentration
(mg/kg)
Inhalation
Concentration
(mg/kg)*
Ingestion
Carcinogenic
Risk
Dermal
Carcinogenic
Risk
Inhalation
Carcinogenic
Risk*
Calculated
Carcinogenic
Risk
Ingestion
Hazard
Quotient
Dermal
Hazard
Quotient
Inhalation
Hazard
Quotient*
Calculated
Non-
Carcinogenic
Hazard
Quotient
67-64-1 Acetone 0.103 0.103 0.103 1.5E-06 1.5E-06
7440-38-2 Arsenic, Inorganic 1.1 1.1 1.1 1.4E-06 2.0E-07 2.8E-11 1.6E-06 2.8E-02 3.3E-03 1.2E-06 3.1E-02
7440-39-3 Barium 323 323 323 2.1E-02 1.0E-05 2.1E-02
7440-43-9 Cadmium (Diet)0.14 0.14 0.14 1.5E-12 1.5E-12 1.8E-02 1.7E-03 2.3E-07 2.0E-02
16065-83-1 Chromium(III), Insoluble Salts 79.69 79.69 79.69 6.8E-04 6.8E-04
18540-29-9 Chromium(VI)1.18 1.18 1.18 3.9E-06 1.6E-09 3.9E-06 5.0E-03 1.9E-07 5.0E-03
7439-92-1 ~Lead and Compounds 49.4 49.4 49.4 <SL**<SL**<SL**
7439-97-6 ~Mercury (elemental)0.091 0.091 0.091 7.9E-03 7.9E-03
205-99-2 ~Benzo[b]fluoranthene 0.184 0.184 0.184 1.2E-07 4.0E-08 1.8E-13 1.6E-07
206-44-0 ~Fluoranthene 0.306 0.306 0.306 9.8E-05 3.0E-05 1.3E-04
91-20-3 ~Naphthalene 0.0237 0.0237 0.0237 4.1E-09 1.5E-09 5.8E-09 1.1E-08 1.5E-05 4.7E-06 1.5E-04 1.7E-04
129-00-0 ~Pyrene 0.303 0.303 0.303 1.3E-04 4.0E-05 1.7E-04
7782-49-2 Selenium 2.5 2.5 2.5 6.4E-03 2.0E-09 6.4E-03
108-88-3 Toluene 0.0071 0.0071 0.0071 1.1E-06 3.0E-07 1.4E-06
87-61-6 Trichlorobenzene, 1,2,3-0.0091 0.0091 0.0091 1.5E-04 1.5E-04
Cumulative: 5.7E-06 9.2E-02
Output Form 2A
** - Note that the EPA has no consensus on reference dose or cancer slope factor values for lead, therefore it is not possible to calculate cancer risk or hazard quotient. Lead concentrations are compared to the EPA screening level
of 400 mg/kg for residential soil.
North Carolina DEQ Risk Calculator