20073 Highland Mill #3 Soil Export Request-Approval 20200729

ROY COOPER NORTH CAROLINA
Governor Environmental Quality
MICHAEL S. REGAN
Secretary
MICHAEL SCOTT July 29, 2020
Director
Sent Via E-Mail
Mr. Peter Harakas Mr. Dan Fitzpatrick
VP Development & Land Acquisitions BP NODA, LLC and BP Trail, LLC
2550 West Tyvola Road, Suite 100 3328 Peachtree Rd NE, Suite 100
Charlotte, North Carolina 28217 Atlanta, Georgia 3032
peter.harakas(d),saussyburbank.com dfitzpatrickgbrandproperties.com
Subject: Brownfields Property Soil Transfer Approval
Highland Mill #3 - East 33rd Street Brownfields Property to
Matheson Ave Creek and Matheson Ave II Brownfields Properties
Charlotte, Mecklenburg County
Brownfields Project Nos 20073-16-060, 23015-19-060 & 22042-18-060
Dear Mr. Harakas and Mr. Fitzpatrick,
The North Carolina Department of Environmental Quality (DEQ) Brownfields Program received
and reviewed a request to export an approximate 2,500 cubic yards of soils from Highland Mill
#3, E 33rd Street Parcel (HM#3, 20073-16-060) Brownfields Property to the Matheson Ave II
(22042-18-060) and Matheson Ave Creek (23015-19-060) Brownfields Properties (collectively,
Matheson Ave) Brownfields Properties. This request was submitted on your behalf by Mr. Patrick
Lowery of Summit Engineering, Laboratory & Testing, P.C. (Summit). DEQ understands the
redevelopment on the Matheson Ave Brownfields Properties will be done jointly under the DEQ-
approved Environmental Management Plan (EMP) dated November 26, 2019.
DEQ Brownfields reviewed the soil analytical data provided in the Export Soil Assessment dated
June 20, 2019 prepared by Summit and Request to Transport Export Soil to Matheson Ave II,
Revision I dated July 14, 2020 prepared by Summit. Review of the DEQ Risk Calculator which
incorporated data from both properties did not increase risk at the receiving Matheson Ave
Brownfields Properties. Therefore, DEQ Brownfields approves of up to 2,500 cubic yards of soil
to be exported to the Matheson Ave Brownfields Properties.
All soil export must be conducted under the DEQ Brownfields approved EMP. Per the HM#3
EMP, the soils will be field screened during excavation prior to export from the property. If
unanticipated impacts are identified during excavation, please refer to the EMP for further actions
and cease transfer until appropriate characterization can be completed.
NORTHCAROLINAD_E Q�I
Oepriament of Environmental Quality
North Carolina Department of Environmental Quality I Division of Waste Management
217 West Jones Street 1 1646 Mail Service Center I Raleigh, North Carolina 27699-1646
919.707.8200

Mr. Peter Harakas and Mr. Dan Fitzpatrick
July 29, 2020
Page 2
In addition, in accordance with the approved EMPs for HM#3 and Matheson Ave Brownfields
Properties, annual Redevelopment Summary Reports will be submitted to DEQ Brownfields.
Details related to the disposition of this soil including but not limited to, total volume, general
description of field screening efforts, etc. should be included with each Property's Redevelopment
Summary Report.
Please be advised that this approval does not waive any applicable requirement to obtain any
necessary permits, licenses or certifications which may be required from other state or local
entities. If you have any questions, please feel free to contact me or Joselyn Harriger at (704) 235-
2195, or via e-mail at Joselyn.Harriger(d),ncdenr.gov
Sincerely,
coi- on 14—
Carolyn Minnich
Brownfields Project Manager
Division of Waste Management
ec: Joselyn Harriger, DEQ Brownfields
Eric Wysong Erie.WysonggApexCos.com
Patrick Lowery plowerygsummit-companies.com

SUMMIT
ENGINEERING. LABORATORY. TESTING
July 14, 2020
SUMMIT Engineering, Laboratory & Testing, P.C.
3575 Centre Circle
Fort Mill, South Carolina 29715
www.SUMMIT-companies.com
Phone: [phone]
Fax: [phone]
Ms. Joselyn Harriger, P.G.
North Carolina Department of Environmental Quality
Brownfields Program
610 E. Center Avenue
Suite 301
Mooresville, North Carolina 28118
Subject: Request to Transport Export Soil to Matheson Ave II (22042-18-060)
Revision #1
Highland Mill #3
E. 33rd Street Site (20037-16-060)
464 E. 33rd Street
Charlotte, North Carolina
SUMMIT Project No. 1820.59
Ms. Harriger,
SUMMIT has prepared this letter to request NC DEQ approve the transfer of 2,500 cubic yards
of export soils from the Highland Mill #3, E. 33rd Street Parcel (20037-16-060) to the Matheson
Ave II (22042-18-060) site to be used in that development as fill material.
An assessment of the proposed export soils and a request to transfer soils to the Matthews
Morse Supply Company (21039-17-060) was prepared on June 20, 2019. An approval letter was
received from NC DEQ on July 5, 2019. Due to unforeseen construction issues, transport to
Matthews Morse site cannot occur at this time. Therefore, an alternate site (Matheson Ave II)
was chosen.
Utilizing the May 2019 DEQ Risk Calculator, SUMMIT input the November 1, 2017 soil analytical
results for Matheson Ave II site. The calculations were made for the combined soil residential
exposure pathway. Following this calculation, SUMMIT compared analytical concentrations
from the June 20, 2019 Highland Mill #3 E. 33rd Street Parcel Export Assessment to the Matheson
analytical results. Following the comparison, SUMMIT determined that six (6) compounds were
ENGINEERING • LABORATORY ■ TESTING
3575 Centre Circle ❑rive I Fart Mill, South Carolina 29715 1 (704) 504 - 1717 1 (704) 504 - 1125 (Fax)
WWW.SUMMIT-COMPANIES.COM

Export Request — Highland Mill # 3 — Revision #1 SUMMIT Project No:1820.59
E. 33rd Street Site, Charlotte, NC July 14, 2020
reported for the Highland Mill site at slightly higher concentrations than the Matheson Ave II
site. These higher detections were then input into the DEQ Risk Calculator, replacing the lower
concentrations from the Matheson Ave II Site. The following table compares the Residential Soil
Exposure Pathway Risk Calculations:
MA II 2017 Results
MA II & HM#3
Combined
Carcinogenic Risk
3.6E-05
3.7E-05
Hazard Index
6.4E-01
6.4E-01
Risk Exceeded?
NO
NO
Total Chromium detections were input into the Risk Calculations as trivalent chromium as
hexavalent chromium is not considered a potential contaminant based on site use histories.
The risk calculated at the Matheson Ave II Brownfields Property combining the highest
detections from the both sites was not meaningfully increased. Therefore, SUMMIT requests
approval for transport of Highland Mill #3, E. 33rd Street Parcel (20037-16-060) export to the
Matheson Ave II (22042-18-060) Brownfields Property.
We appreciate your review of this document. If you have any questions regarding this request,
please contact me at 803-230-5087.
SUMMIT
f y
Senior Ell'
CAR
t4SAD ,
SEAL
�OLCMC'� '�
%�,
Attachments:
• Table 1— 2017 Limited Phase II — Matheson Ave II
• Table 1— 2019 Export Soil Assessment — E. 33rd Street, Highland Mill #3
• Residential Soil Risk Calculation — Matheson Ave 2017 Results
• Residential Soil Risk Calculation — Combined Matheson & Highland Mill Highest
Detections
2

TABLE 1
Soil Assessment Analytical Results
Chick Godley Road Property
Charlotte, North Carolina
VOCs (µg
kg)
SVOCs (µg/kg)
RCRA
Metals (mg/kg)
v
a,
Sample Name
_
Sample Date
N
N
N
v
W
Q
(Sample Depth)
v
o
°'
v
v
T
v
v
v
U
t
N
O
O
v
v
co
O
N
O_
�
O
iE
t
++
t
X
N
M
+
t
Q
N
N
C
O
L
O
O
L
O
O
O
++
N
UJ
00
i
�'
N
L
N
T
N
i`
Y
to
>`
Q
0
-
7
C
i
�-
O
UJ
N
(6
C
v
*
N
L
L
L
c
V
O
N
U
'i
O
i
t
a�
U
N
-0
f6
(O
t
to
�'
v
O
v
C
O
L
Y
a�
ca
++
E
>-
E
C
U
V_
U_
N
~
O
Q
m
6
O
O
O
O
O
Q
00
0
*'
W
C
C
t
t
C
V
7
_O
O
0
N
N
N
N
N
N
a
vU
C
N
N
O
O
C
N
O
C
c
c
7
O
U
i
�
U1
U
N
rn
V
v
++
v
O
N
U
N
U
N
U
+�
c
C
N
C
N
C
N
C
N
C
41
0:
CD
i
ca
L
t
C
'
ti
7
O
'6
O_
co
4J
t
L
ca
-
M
L
L
M
ai
N
T
<
r-I
ri
ri
2
r-i
I-
<
<
<
cc
c0
DO
Co
co
00
ri
U
U
C)
0
-0
LL
�
N
Z
CL
O_
Q
c0
U
U
to
IHSB Residential PSRG Standards
12,000,000
380,000
NE
2,800
16,000,000
58,000
17,000
820,000
12,000
870
720,000
NE
3,600,000
170,000
1,100
110
1,100
NE
11,000
10,000
NE
110,000
15,000
1,300,000
39,000
480,000
480,000
1,100
48,000
4,100
NE
360,000
0.68
3,100
14
NE
NE
2.3
78
IHSB Industrial/Commercial PSRG Standards
100,000,000
380,000
NE
12,000
29,000,000
650,000
82,000
820,000
55,000
4,000
9,000,000
NE
45,000,000
820,000
21,000
2,100
21,000
NE
210,000
43,000
NE
2,100,000
210,000
16,000,000
160,000
6,000,000
6,000,000
21,000
600,000
18,000
NE
4,500,000
3
47,000
200
NE
NE
3.1
1,200
IHSB Protection of Groundwater PSRG Standards
25,000
390
3,800
120
NE
25
6.3
8,300
4,100
21
16,000
41,000
1,300,000
3,100
350
120
1,200
15,600,000
12,000
84,000
740
36,000
10,000
35,000
14,000
670,000
110,000
3,900
3,100
390
134,000
440,000
5.8
580
3
360,000
270
1
2.1
Test Pit Samples
TIP-1 (4-5)
11/13/2017
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
4.2
82
0.38
59
250
0.42
1.1
TP-2 (1.5-2)
11/13/2017
<23
<5.8
<5.8
<5.8
<5.8
<5.8
<5.8
<5.8
<5.8
<5.8
97
18
250
<81
760
730
1,300
180
390
31 J
130
810
94
<81
51 J
1,500
85
180
100
110
1,200
1,100
4.1
140
0.21 J
27
40
0.048 J
0.76 J
TP-3 (2-2.5)
11/13/2017
6.1 J
<5.2
<5.2
<5.2
<5.2
<5.2
<5.2
<5.2
<5.2
<5.2
<16
<16
<16
<83
17
13 J
25
<16
10 J
<83
<83
10 J
<83
<83
330
21
<16
<16
<16
<16
17
18
3.4
79
0.14 J
66
9.8
0.043 J
0.801
TP-4 (4.5-5)
11/13/2017
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
2.1
100
0.082 J
63
12
0.039 J
0.67 J
TP-5 (6-7)
11/13/2017
7.9 J
<5.4
<5.4
<5.4
<5.4
2.7 J
<5.4
<5.4
<5.4
<5.4
<16
<16
<16
<82
<16
<16
<16
<16
<16
<82
<82
<16
<82
<82
46 J
<16
<16
<16
<16
<16
<16
<16
3.9
140
0.16 J
110
9.6
0.042 J
1.1
TIP-6 (1.5-2)
11/13/2017
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
2.7
150
0.12 J
46
11
<0.096
0.75 J
Soil Boring Samples
SB-3 (7.5-10)
11/20/2017
<23
7.5
9.9
30
<5.8
<5.8
10
2.3 J
110
3.3 J
<19
<19
<19
<96
21
17 J
<19
13 J
<19
<96
<96
13 J
<96
130
55 J
18
<19
12 J
<19
<19
<19
19
3.3
44
0.21 J
100
15
0.033 J
1.9
SOIL-1-112117
11/21/2017
39
8.1
11
34
100
<6.5
7.6
<6.5
100
<6.5
<16
120
67
230
440
570
1,300
140
400
<83
33 J
390
320
46 J
51 J
630
<16
160
160
130
160
560
19
75
0.30
54
30
0.066 J
1.4
QA/QC
DUP-1
11/13/2017
<18
<4.5
<4.5
<4.5
<4.5
1.9 J
<4.5
<4.5
<4.5
<4.5
<16
<16
9.71
<79
34
31
71
13 J
21
<79
<79
42
<79
<79
46 J
71
<16
11.1
41
34
59
58
3.7
44
0.18 J
140
13
0.039 J
1.1
TP-2 (1.5-2)
Notes:
µg/kg = micrograms per kilogram
mg/kg = milligrams per kilogram
Only analytes that were detected in one or more samples are shown
" = Acetone, 1,1'-Biphenyl, Di-n-butyl phthalate, and bis(2-Ethylhexyl)phthalate are possible laboratory artifacts
Bold concentrations exceed one or more of the IHSB Standards
VOCs = Volatile Organic Compounds
SVOCs = Semi -Volatile Organic Compounds
RCRA = Resource Conservation and Recovery Act
IHSB Standards = Inactive Hazardous Sites Branch PSRG for industrial health (October 2016)
PSRG = Preliminary Soil Remediation Goals
NA = Not analyzed
NE = Standard not established
< = Result below laboratory reporting limit
J = Estimated laboratory concentration
QA/QC = Quality Assurance/Quality Control
DUP-1 = Blind field soil duplicate (taken from TP-2)

Page 1 of 1
All Values in mg/kg
CAS VOC Analyte
67-64-1 Acetone
75-09-2 Methylene chloride
CAS
SVOC Analyte
83-32-9
Acenaphthene
208-96-8
Acenaphtylene
120-12-7
Anthracene
56-55-3
Benzo(a)amhracene
50-32-8
Benzo(a)pyrene
205-99-2
Benzo(b)fluoranthene
191-24-2
Benzo(g,h,i)perylene
207-08-9
Benzo(k)fluoranthene
105-60-2
Caprolactam
86-74-8
Carbazole
218-01-9
Chrysene
132-64-9
Dibenzofuran
117-81-7
bis(2-Ethylhexyl)phthalate
206-44-0
Fluoranthene
86-73-7
Fluorene
193-39-5
Indeno(1,2,3-c,d)pyrene
91-57-6
2-Methyhiaphthalene
91-20-3
Naphthalene
85-01-8
Phenanthrene
129-00-0
Pyrene
CAS Metals
7440-38-2 Arsenic
7440-39-3 Barium
7440-43-9 Cadmium
7440-47-3 Chromium
7439-92-1 Lead
7439-97-6 Mercury
7782-49-2 Selenium
Table 1.0: Soil Sample Detection Summary Table
1-0-2
1-2-4
1-2-4-DUP
2-0-2
2-2-4
DEQ Reference Values
6/11/2019
6/11/2019
6/11/2019
6/11/2019
6/11/2019
0-F Composite
2-4' Composite
2-4' Composite
0-1' Composite
2-4' Composite
PSRGRes
Result
DL
Result
DL
Result
DL
Result
DL
Result
DL
1.20E+04
0.28
0.0093
0.68 E
0.011
0.5 E
0.0098
0.11
0.0091
0.37
0.011
5.80E+01
ND
0.0023
0.0037 J
0.0027
0.0039 J
0.0025
ND
0.0023
ND
0.0027
PSRGRes
Result
DL
Result
DL
Result
DL
Result
DL
Result
DL
7.20E+02
0.0086 J
0.0052
0.0055 J
0.0051
0.021
0.005
0.043 J
0.018
0.098 J
0.0097
NA
ND
0.0059
0.0064 J
0.0058
0.0078 J
0.0057
0.061
0.021
0.072
0.011
3.60E+03
0.021
0.0032
0.016 J
0.0031
0.0053
0.0031
0.12
0.011
0.19
0.006
1.10E+00
0.095
0.0037
0.082
0.0036
0.16
0.0036
0.51
0.013
0.71
0.0069
1.10E-01
0.092
0.0041
0.086
0.004
0.15
0.004
0.54
0.015
0.0077
1.10E+00
0.13
0.0031
0.12
0.0031
0.22
0.003
0.72
0.011
1
0.0059
NA
0.055
0.0041
0.044
0.004
0.064
0.0039
0.28
0.014
0.36
0.0076
1.10E+01
0.052
0.003
0.05
0.0029
0.087
0.0029
0.27
0.011
0.34
0.0056
6.30E+03
ND
0.031
ND
0.031
ND
0.03
ND
0.11
ND
0.059
NA
ND
0.031
ND
0.031
0.042 J
0.03
ND
0.11
0.099 J
0.059
1.10E+02
0.1
0.0028
0.094
0.0028
0.17
0.0027
0.52
0.01
0.73
0.0053
1.50E+01
ND
0.031
ND
0.031
ND
0.03
ND
0.11
ND
0.059
3.90E+01
ND
0.16
ND
0.15
ND
0.15
ND
0.56
ND
0.29
4.80E+02
0.2
0.0026
0.16
0.0026
0.37
0.0025
1
0.093
1.4
0.0049
4.80E+02
0.0065 J
0.0036
ND
0.0036
0.02 J
0.0034
0.03 J
0.013
0.059
0.0067
1.10E+00
0.047
0.0062
0.04
0.0062
0.06
0.0061
0.25
0.022
0.33
0.012
4.80E+01
ND
0.0062
ND
0.0062
0.0064 J
0.006
0.023 J
0.022
0.023 J
0.012
4.10E+00
ND
0.0061
ND
0.0059
0.0075 J
0.0059
0.03 J
0.022
0.036
0.011
NA
0.094
0.0045
0.069
0.0044
0.26
0.0044
0.47
0.016
0.75
0.0084
3.60E+02
0.16
0.0031
0.14
0.0031
0.29
0.003
0.96
0.011
1.3
0.0059
PSRGRes
Result
DL
Result
DL
Result
DL
Result
DL
Result
DL
6.80E-01
2.9
0.94
2.4
0.61
2.1
0.6
1.9
0.28
2.1
0.29
3.10E+03
36
0.41
46
0.4
39
0.39
64
0.36
61
0.37
1.40E+01
ND
0.24
ND
0.15
ND
0.15
0.12 J
0.071
0.1 J
0.073
3.10E-01
31
0.16
24
0.15
39
0.15
14
0.14
16
0.14
NA
11
0.85
11
0.55
11
0.54
19
0.5
20
0.52
2.30E+00
0.044 J
0.024
0.035
0.023
0.38 J
0.54
0.039 J
0.021
0.034 J
0.022
7.80E+01
ND
1.5
ND
0.99
ND
0.024
ND
0.45
ND
0.47
ND = Not detected at or above MDL J = Estimated Concentration DL = Detection Limit
BOLD = Concentration Above Reference Values Feb. 2018 IHSB PSRGs utilized for comparison
VOC sample collected via grab methods NT = Not Tested
Highland Mill #3 June 20, 2019
Charlotte, NC SUMMIT Project No: 1820.59

North Carolina Department of Environmental Quality
Risk Calculator
Version Date:
May 2019
Basis:
May 2019 EPA RSL Table
Site Name:
Matheson Ave II
Site Address:
DEQ Section:
Brownfields
Site ID:
Exposure Unit ID:
2017 Phase Soil Results
Submittal Date:
8/7/2019
Prepared By:
Patrick W Lowery, PG
SUMMIT ELT, PC
Reviewed By:
Michael Zavislak, PE
North Carolina DEQ Risk Calculator

Complete Exposure Pathways
Version Date: May 2019
Basis: May 2019 EPA RSL Table
Site ID:
Exposure Unit ID: 2017 Phase Soil Results
Note: Risk output will only be calculated for complete exposure pathways.
Receptor
Pathway
Check box if
pathway
complete
DIRECT CONTACT SOIL AND WATER PATHWAYS
Resident
Soil
0
Groundwater Use
❑
Non -Residential Worker
Soil
0
Groundwater Use
❑
Construction Worker
Soil
❑
Recreator/Trespasser
Soil
❑
Surface Water
❑
VAPOR INTRUSION PATHWAYS
Resident
Groundwater to Indoor Air
❑
Soil Gas to Indoor Air
❑
Indoor Air
❑
Non -Residential Worker
Groundwater to Indoor Air
❑
Soil Gas to Indoor Air
❑
Indoor Air
❑
CONTAMINANT MIGRATION PATHWAYS
Groundwater
Source Soil
❑
Source Groundwater
❑
Surface Water
Source Soil
❑
Source Groundwater
❑
North Carolina DEQ Risk Calculator

Risk for Individual Pathways
1
Version Date: May 2019
Basis: May 2019 EPA RSL Table
Site ID:
Exposure Unit ID: 2017 Phase Soil Results
DIRECT CONTACT SOIL AND WATER CALCULATORS
Receptor
Pathway
CarcinogenicRisk
Hazard Index
Risk exceeded?
Resident
Soil
3.6E-05
6.4E-01
NO
Groundwater Use*
NC
NC
NC
Non -Residential Worker
Soil
6.8E-06
5.3E-02
NO
Groundwater Use*
NC
NC
NC
Construction Worker
Soil
NC
NC
NC
Recreator/Trespasser
Soil
NC
NC
NC
Surface Water*
NC
NC
NC
VAPOR INTRUSION CALCULATORS
Receptor
Pathway
Carcinogenic
Risk
Hazard Index
Risk exceeded?
Resident
Groundwater to Indoor Air
NC
NC
NC
Soil Gas to Indoor Air
NC
NC
NC
Indoor Air
NC
NC
NC
Non -Residential Worker
Groundwater to Indoor Air
NC
NC
NC
Soil Gas to Indoor Air
NC
NC
NC
Indoor Air
NC
NC
NC
CONTAMINA4 MIGRATION CALCULATORS
Pathway
Source
Target Receptor Concentrations Exceeded?
Groundwater
Source Soil
Exceedence of 2L at Receptor?
NC
Source Groundwater
Exceedence of 2L at Receptor?
NC
Surface Water
Source Soil
Exceedence of 2B at Receptor?
NC
Source Groundwater
Exceedence of 2B at Receptor?
NC
Notes:
1. If lead concentrations were entered in the exposure point concentration tables, see the individual calculator sheets for lead
concentrations in comparison to screening levels. Note that lead is not included in cumulative risk calculations.
2. * = If concentrations in groundwater exceed the NC 2L Standards or IMAC, or concentrations in surface water exceed the
NC 2B Standards, appropriate remediation and/or institutional control measures will be necessary to be eligible for a risk -based
closure.
3. NM = Not Modeled
4. NC = Pathway not complete
North Carolina DEQ Risk Calculator

ID:
•e Point Concentro
Date: May 2019
Mav 2019 EPA W
Unit ID: 2017 Phase Soil Results
Description of Exposure Point Concentration Selection:
Exposure Point
Concentration
(mg/kg)
Notes:
CAS Number
Chemical
Minimum
Concentration
(Qualifier)
Maximum
Concentration
(Qualifier)
Units
Location of
Maximum
Concentration
Detection
Frequency
Range of
Detection Limits
Concentration
Used for
Screening
Background
Value
Screening
Toxicity Value
(Screening
Level) (n/c)
Potential
ARAR/TBC
Value
Potential
ARAR/TBC
Source
COPC
Flag
(Y/N)
Rationale for
Selection or
Deletion
0.039
67-64-1
Acetone
mg/kg
19
7440-38-2
Arsenic, Inorganic
mg/kg
150
7440-39-3
Barium
mg/kg
0.23
100-52-7
Benzaldehyde
mg/kg
110
16065-83-1
Chromium(III), Insoluble Salts
mg/kg
0.0081
95-50-1
Dichlorobenzene,l,2-
mg/kg
0.034
10646-7
Dichlorobenzene,l,4-
mg/kg
250
7439-92-1
Lead and Compounds
mg/kg
0.43
7439-97-6
Mercury (elemental)
mg/kg
0.1
79-20-9
Methyl Acetate
mg/kg
0.0027
75-09-2
Methylene Chloride
mg/kg
0.13
84-74-2
—Dibutyl Phthalate
mg/kg
0.097
83-32-9
—Acenaphthene
mg/kg
0.25
120-12-7
—Anthracene
mg/kg
0.76
56-55-3
—Benz[a]anthracene
mg/kg
0.73
50-32-8
—Benzo[a]pyrene
mg/kg
1.3
205-99-2
—Benzo[b]fluoranthene
mg/kg
0.4
207-08-9
—Benzo[k]fluoranthene
mg/kg
0.32
218-01-9
—Chrysene
mg/kg
1.5
20644-0
—Fluoranthene
mg/kg
0.085
86-73-7
—Fluorene
mg/kg
0.18
193-39-5
—Indeno[1,2,3-cd]pyrene
mg/kg
0.16
91-57-6
—Methylnaphthalene, 2-
mg/kg
0.13
91-20-3
—Naphthalene
mg/kg
1.1
129-00-0
—Pyrene
mg/kg
1.9
778249-2
Selenium
mg/kg
0.01
127-184
Tetrachloroethylene
mg/kg
0.0023
108-88-3
Toluene
mg/kg
0.11
120-82-1
Trichlorobenzene,1,2,4-
mg/kg
0.0033
79-01-6
Trichloroethylene
mg/kg
North Carolina DEQ Risk Calculator

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North Carolina Department of Environmental Quality
Risk Calculator
Version Date:
May 2019
Basis:
May 2019 EPA RSL Table
Site Name:
Matheson Ave II & Highland Combined
Site Address:
DEQ Section:
Brownfields
Site ID:
Exposure Unit ID:
Import Soil Highest combined with Matheson Ave
Submittal Date:
8/7/2019
Prepared By:
Patrick W Lowery, PG
SUMMIT ELT, PC
Reviewed B
Michael Zavislak, PE
North Carolina DEQ Risk Calculator

Complete Exposure Pathways
Version Date: May 2019
Basis: May 2019 EPA RSL Table
Site ID:
Exposure Unit ID: Import Soil Highest combined with Matheson Ave
Note: Risk output will only be calculated for complete exposure pathways.
Receptor
Pathway
Check box if
pathway
complete
DIRECT CONTACT SOIL AND WATER PATHWAYS
Resident
Soil
0
Groundwater Use
❑
Non -Residential Worker
Soil
0
Groundwater Use
❑
Construction Worker
Soil
❑
Recreator/Trespasser
Soil
❑
Surface Water
❑
VAPOR INTRUSION PATHWAYS
Resident
Groundwater to Indoor Air
❑
Soil Gas to Indoor Air
❑
Indoor Air
❑
Non -Residential Worker
Groundwater to Indoor Air
❑
Soil Gas to Indoor Air
❑
Indoor Air
❑
CONTAMINANT MIGRATION PATHWAYS
Groundwater
Source Soil
❑
Source Groundwater
❑
Surface Water
Source Soil
❑
Source Groundwater
❑
North Carolina DEQ Risk Calculator

Risk for Individual Pathways
rim
Version Date: May 2019
Basis: May 2019 EPA RSL Table
7
Site ID:
Exposure Unit ID: Import Soil Highest combined with Matheson Ave
DIRECT CONTACT SOIL AND WATER CALCULATORS
Receptor
Pathway
CarcinogenicHazard
Risk
Index
Risk exceeded`.
Resident
Soil
3.7E-05
6.4E-01
NO
NC
Groundwater Use*
NC
NC
Non -Residential Worker
Soil
6.8E-06
5.4E-02
NO
Groundwater Use*
NC
NC
NC
Construction Worker
Soil
NC
NC
NC
Recreator/Trespasser
Soil
NC
NC
NC
Surface Water*
NC
NC
NC
VAPOR INTRUSION CALCULATORS
Receptor
Pathway
CarcinogenicRisk
Hazard Index
Risk exceeded?
Resident
Groundwater to Indoor Air
NC
NC
NC
Soil Gas to Indoor Air
NC
NC
NC
Indoor Air
NC
NC
NC
Non -Residential Worker
Groundwater to Indoor Air
NC
NC
NC
Soil Gas to Indoor Air
NC
NC
NC
Indoor Air
NC
NC
NC
CONTAMINANT MIGRATION CALCULATORS
Pathway
Source
Target Receptor Concentrations Exceeded?
Groundwater
Source Soil
Exceedence of 21, at Receptor?
NC
Source Groundwater
Exceedence of 21, at Receptor?
NC
Surface Water
Source Soil
Exceedence of 2B at Receptor?
NC
Source Groundwater
Exceedence of 2B at Receptor?
NC
Notes:
1. If lead concentrations were entered in the exposure point concentration tables, see the individual calculator sheets for lead
concentrations in comparison to screening levels. Note that lead is not included in cumulative risk calculations.
2. * = If concentrations in groundwater exceed the NC 2L Standards or IMAC, or concentrations in surface water exceed the NC
2B Standards, appropriate remediation and/or institutional control measures will be necessary to be eligible for a risk -based
closure.
3. NM = Not Modeled
4. NC = Pathway not complete
North Carolina DEQ Risk Calculator

Site ID:
Point
Date: May 2019
Mav 2019 EPA RSL Table
Unit ID: Import Soil Highest combined with Matheson Ave
Description of Exposure Point Concentration Selection:
Exposure Point
Concentration
(mg/kg)
Notes:
CAS Number
Chemical
Minimum
Concentration
(Qualifier)
Maximum
Concentration
(Qualifier)
Units
Location of
Maximum
Concentration
Detection
Frequency
Range of
Detection Limits
Concentration
Used for
Screening
Background
Value
Screening
Toxicity ValueARAR/TBC
(Screening
Level) (n/c)
Potential
Value
Potential
ARAR/TBC
Source
COPC
Flag
(Y/1)
Rationale for
Selection or
Deletion
0.68
67-64-1
Acetone
mg/kg
HM#3
19
1
7440-38-2
Arsenic, Inorganic
— kg
150
7440-39-3
Barium
mg/kg
0.23
100-52-7
Benzaldeh de
— kg
110
16065-83-1
Chromium(III), Insoluble Salts
mg/kg
0.0081
95-50-1
Dichlorobenzene,l,2-
— kg
0.034
106-46-7
Dichlorobenzene, 1,4-
mg/kg
250
7439-92-1
Lead and Compounds
— kg
0.43
7439-97-6
—Mercury (elemental)
mg/kg
0.1
79-20-9
Methyl Acetate
m
0.0039
75-09-2
Methylene Chloride
mg/kg
HM#3
0.13
84-74-2
—Dibutyl Phthalate
— kg
0.098
83-32-9
—Acenaphthene
mg/kg
HM#3
0.25
120-12-7
—Anthracene
— kg
0.76
56-55-3
--Benz[a]anthracene
mg/kg
0.74
50-32-8
—Benzo a ene
m
HM#3
1.3
205-99-2
—Benzo[b]fluoranthene
mg/kg
0.4
207-08-9
—Benzo k fluoranthene
m
0.32
218-01-9
---Chrysene
mg/kg
1.5
206-44-0
—Fluoranthene
— kg
0.085
86-73-7
—Fluorene
mg/kg
0.33
193-39-5
—Indeno 1,2,3-cd ene
—kg-g/kg
HM#3
0.16
91-57-6
—Methyhiaphthalene, 2-
mg/kg
0.13
91-20-3
—Naphthalene
mg/kg
1.3
129-00-0
—Pyrene
mg/kg
HM#3
1.9
7782-49-2
Selenium
mg/kg
0.01
127-18-4
Tetrachloroethylene
mg/kg
0.0023
108-88-3
Toluene
— kg
0.11
120-82-1
Trichlorobenzene, 1,2,4-
mg/kg
0.0033
79-01-6
Trichloroeth lene
mg/kg
North Carolina DEQ Risk Calculator

NorU Carolina DEO Rlak Calculabr