21050_S Saunders St Data Summary_20190103

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APPROXIMATE
w 0 2000 4000
SCALE IN FEET
U.S.G.S. QUADRANGLE MAP
RALEIGH WEST, NORTH CAROLINA, 2002
QUADRANGLE
7.5 MINUTE SERIES (TOPOGRAPHIC)

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OROTHEA DIX PARK
000
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`+4 AM'
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LEGEND
BROWNFIELDS PROPERTY BOUNDAI
BROWNFIELDS PARCEL LINES
1 SITE PARCEL ID
CAPITAL AREA GREENWAY - ROCKY
BRANCH TRAIL
ROCKY BRANCH CREEK
Map ID
Address
1
927 South Saunders Street
2
951 South Saunders Street
3
0 South Dawson Street
4
1001 South Saunders Street
5
1015 South Saunders Street
6
1017 South Saunders Street
7
1019 Mount Hope Drive
8
1019 South Saunders Street
9
1021 B South Saunders Street
10
1021 South Saunders Street
11
1023 South Saunders Street
12
1029 South Saunders Street
13
1027 South Saunders Street
14
0 South Saunders Street
15
1035 South Saunders Street
16
1033 South Saunders Street
17
1025 South Saunders Street
18
1041 South Saunders Street
19
0 Green Street
20
1031 South Saunders Street
pp 8
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0 150 300
mmmmmmmw
SCALE IN FEET
SITE MAP
PROJECT SOUTH SAUNDERS STREET ASSEMBLAGE
RALEIGH, WAKE COUNTY, NORTH CAROLINA
BROWNFIELDS PROJECT NO. 21050-17-092
H&H JOB NO. FHD-005
h a rt 1 h i c k m a n Raleigh,
g onset Ridge Road, Suite 301
Ralei h, Norch Carolina 27607
. 919-847-4241(p) 919-847-4261(f)
SMARTER ENVIRONMENTAL SOLUTIONS
License # C-1269 / #C-245 Geology
DATE: 11-6-18 REVISION NO. 0
JOB NO. FHD-005 FIGURE NO. 2

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LEGEND
BROWNFIELDS PROPERTY BOUNDAI
BROWNFIELDS PARCEL LINES
1 SITE PARCEL ID
CAPITAL AREA GREENWAY - ROCKY
BRANCH TRAIL
ROCKY BRANCH CREEK
oUS POTENTIAL UNDERGROUND STORA(
TANK
ABOVEGROUND HYDRAULIC LIFTS
PROPOSED GROUNDWATER
SAMPLING LOCATION
PROPOSED SOIL SAMPLING LOCATI(
PROPOSED SURFACE WATER C
SEDIMENT SAMPLING LOCATION
® SUB -SLAB SOIL VAPOR POINT
NOTES
1. AERIAL MAP ACDUIRED FROM GOOGLE
EARTH.
2. SUB -SLAB VAPOR POINTS INSTALLED ON
DECEMBER 11, 2018 AND SAMPLED ON
DECEMBER 12, 2018.
Map ID
Address
1
927 South Saunders Street
2
951 South Saunders Street
3
0 South Dawson Street
4
1001 South Saunders Street
5
1015 South Saunders Street
6
1017 South Saunders Street
7
1019 Mount Hope Drive
8
1019 South Saunders Street
9
1021 B South Saunders Street
13
1027 South Saunders Street
0
APPROXIMATE
0 60 120
SCALE IN FEET
TITLE SAMPLE LOCATION MAP
PARCELS 2, 3, 4, 5, & 6
PROJECT SOUTH SAUNDERS STREET ASSEMBLAGE
RALEIGH, WAKE COUNTY, NORTH CAROLINA
BROWNFIELDS PROJECT NO. 21050-17-092
H&H JOB NO. FHD-005
• 3921 Sunset Ridge Road, Suite 301
hart ^• h i c k m a n Raleigh, North Carolina 27607
. 919-847-4241(p) 919-847-4261(f
SMARTER ENVIRONMENTAL SOLUTIONS
T.icense # C-1269 / #C-245 Geology
DATE: 1-3-19 REVISION NO. 0
JOB NO. FHD-005 I FIGURE NO. 4

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Table 1
Summary of Soil Gas Analytical Data
South Saunders Street Assemblage
Raleigh, North Carolina
Brownfields Project No. 21050-17-092
H&H Job No. FHD-005
SSVP-4
Sample ID
SSVP-1
SSVP-2
SSVP-3
SSVP-5
SSVP-6
SSVP-4
DUP-1
Residential
Sub -Slab SGSL(1)
Non -Residential Sub
Slab SGSL(1)
Sample Date
12/12/2018
12/12/2018
12/12/2018
12/12/2018
12/12/2018
12/12/2018
Address
1001 South Saunders Street
1015A South Saunders Street
1015B South Saunders Street
Units
(µg/m)
VOCs (TO-15)
Acetone
37
48
180 J
390
490
160
3,000
220,000
2,700,000
Benzene
<0.64
<0.64
44
230
190
1.7
3.1
120
1,600
2-Butanone (Methyl Ethyl Ketone; MEK)
4.0 J
<24
<240
<240
<240
7.5
81
35,000
440,000
Carbon Tetrachloride
<1.3
48
<13
<13
<13
17
<1.3
160
2,000
Chloroform
4.2
2.7
<9.8
130
<9.8
<0.98
<0.98
41
530
1,3-Dichlorobenzene
<1.2
<1.2
<12
<12
<12
<1.2
1.3
NE
NE
1, 1 -Dichloroethane
<0.81
13
4,300
360
320
<0.81
<0.81
580
7,700
1,1-Dichloroethene
<0.79
150
27,000
2,900
2,600
21
<0.79
1,400
18,000
Ethanol
87
74
230
210
310
2,100
2,600
NE
NE
Ethyl Acetate
<1.4
11
<7.2
<7.2
<1.4
<1.4
490
6,100
Ethylbenzene
<0.87
<0.87
<8.7
1,300
1,100
8.5
10
370
4,900
4-Ethyltoluene
<0.98
<0.98
<9.8
2,800
2,400
17
16
NE
NE
Heptane
<0.82
<0.82
<8.2
140
110
<0.82
10
2,800
35,000
2-Hexanone
<0.82
<0.82
<8.2
<8.2
<8.2
<0.82
14
210
2,600
Isopropanol
9.0 J
13 J
<200
<200
<200
35
200
1,400
18,000
Methylene Chloride
1.3 J
2.5 J
<69
<69
<69
<6.9
<6.9
4,200
53,000
4-Methyl-2-pentanone (MIBK)
<0.82
<0.82
<10
<8.2
<8.2
<8.2
19
21,000
260,000
Naphthalene
<1.0
<1.0
<140
<10
<10
<1.0
2.7
21
260
Styrene
<0.85
<0.85
<8.5
<8.5
<8.5
1.6
<0.85
7,000
88,000
Tetrachloroethene (PCE)
570
31
<14
78
87
160
340
280
3,500
Toluene
2.6
14
11
3,500
3,000
30
61
35,000
440,000
1,1,1-Trichloroethene
<1.1
300
50,000
10,000
8,700
110
140
35,000
440,000
Trichloroethene (TCE)
550
11
<11
<11
32
5.1
<1.1
14
180
Trichlorofluoromethane (Freon 11)
1.6 J
2.5 J
<45
<45
<45
1.1 J
1.3 J
NE
NE
1,2,4-Trimethylbenzene
<0.98
2.8
<9.8
2,800
2,400
17
21
420
5,300
1,3,5-Trimethylbenzene
<0.98
1.3
<9.8
1,700
1,400
9
5.9
420
5,300
m&p-Xylene
<1.7
6.4
<17
8,000
6,800
48
46
700
8,800
o-Xylene
<0.87
6.2
1 <8.7
1 4,800
1 4,100
1 28
1 19
1 700
1 8,800
Table 1 (Page 1 ofn2)
S:\AAA--9 ! aster Projects\Five Horizons Development\FHD-005 - Brownfield Consulting - S. Saunders St. RaleigMBrownfields Assessment (Soil Gas and Limited Groundwater)\Report\Tables\S. Saunders Data Tables Hart &Hickman, 1.

Table 1
Summary of Soil Gas Analytical Data
South Saunders Street Assemblage
Raleigh, North Carolina
Brownfields Project No. 21050-17-092
H&H Job No. FHD-005
SSVP-4
Sample ID
SSVP-1
SSVP-2
SSVP-3
SSVP-5
SSVP-6
SSVP-4
DUP-1
Residential
Sub -Slab SGSL(1)
Non -Residential Sub
Slab SGSL(1)
Sample Date
12/12/2018
12/12/2018
12/12/2018
12/12/2018
12/12/2018
12/12/2018
Address
1001 South Saunders Street
1015A South Saunders Street
1015E South Saunders Street
Units
(µg/m)
Risk Evaluation (Soil Gas to Indoor Air)(2)
3.7E-05
4.7E-06
7.7E-05
9.2E-05
5.3E-05
2.2E-06
2.5E-06 - -
Residential Carcinogenic Risk
Residential Hazard Index
8.3E+00
2.3E-01
4.2E+00
6.7E+00
6.1E+00
2.4E-01
3.5E-01 - -
Non -Residential Carcinogenic Risk
2.0E-06
3.5E-07
5.9E-06
7.0E-06
4.0E-06
1.6E-07
1.9E-07 - -
NonResidential Hazard Index
6.6E-01
1.8E-02
3.3E-01
5.3E-01
4.9E-01
1.9E-02
2.8E-02 - -
Notes:
1) North Carolina Department of Environmental Quality (DEQ) Division of Waste Management (DWM) Sub -slab and Exterior Soil Gas Screening Levels (SGSLs) (February 2018).
2) Risk evaluation performed using the February 2018 DEQ Risk Calculator for the soil gas to indoor air vapor intrusion pathway.
Only VOCs detected in at least one sample are shown.
Compound concentrations reported to the laboratorty method detection limits.
Concentrations are reported in micrograms per cubic meter (pg/m).
Laboratory analytical method is shown in parentheses.
Bold values indicate compounds detected above DEQ Residential SGSLs (February 2018).
Underlined values indicate compounds detected above DEQ Non -Residential SGSLs (February 2018).
Highlighted risk values exceed DEQ DWM's acceptable limits of 1.0E-04 for carcinogenic risk or 1.0E+00 for hazard index.
J = Estimated value that is less than the laboratory reporting limit and greater than or equal to the method detection limit
ft bgs = feet below the ground surface
NE = Not Established
- = Not Applicable
Table 1 (Page 2 of2)
S:\AAA--9 ! aster Projects\Five Horizons Development\FHD-005 - Brownfield Consulting - S. Saunders St. RaleigMBrownfields Assessment (Soil Gas and Limited Groundwater)\Report\Tables\S. Saunders Data Tables Hart &Hickman, 1.

Table 2
Summary of Groundwater Analytical Data
South Saunders Street Assemblage
Raleigh, North Carolina
Brownfields Project No. 21050-17-092
H&H Job No. FHD-005
MW-7
DEQ Vapor Intrusion GWSLs
Sample ID
MW-3
MW-7
DUP-1
NC 2L
Sample Date
12/13/2018
12/13/2018
Groundwater
Standard(')
Residential
GWSLs(2)
Non -Residential
GWSLs(2)
Address
927 South Saunders Street
Location
UST area
UST area
Units
(µg/L)
VOCs (820613)
Benzene
<1.96
36.9
45.0
1
16
69
Ethylbenzene
7.36
10.7
12.9
600
35
150
Isopropylbenzene
38.9
28.8
44.2
70
NE
NE
Naphthalene
120
<3.89
<3.89
6
35
150
n-Butylbenzene
4.60 J
5.51
8.08
70
NE
NE
N-Propylbenzene
30.5
28.7
38.1
70
NE
NE
p-Isopropyltoluene
<2.19
5.45
7.01
NE
NE
NE
sec -Butyl benzene
4.81 J
5.56
8.04
70
NE
NE
tert-Butylbenzene
2.11 J
3.12 J
4.28 J
70
NE
NE
Toluene
<1.69
15.6
19.7
600
3,800
16,000
Xylenes (total)
<4.31
10.4
9.88 J
500
77
320
SVOCs (8270D)
1-Methyl naphthalene
3.17
5.08
5.02
NE
NE
NE
2-Methyl naphthalene
5.61
7.09
7.86
30
NE
NE
Naphthalene
40.1
<1.76
<1.76
6
35
150
Metals (6020B/7470A)
Arsenic
<1.00
<1.00
<1.00
10
NE
NE
Barium
276
455
467
700
NE
NE
Cadmium
<1.00
<1.00
<1.00
2
NE
NE
Chromium
2.08
2.10
<2.00
10
NE
NE
Lead
<1.00
<1.00
<1.00
15
NE
NE
Mercury
<0.200
<0.200
<0.200
1
0.18
0.75
Selenium
<5.00
<5.00
<5.00
20
NE
NE
Silver
<1.00
<1.00
<1.00
20
NE
NE
General Chemistry (OIA 1677)
Cyanide (available)
<2.00
<2.00
<2.00
70
40
170
Table 2 (Page 1 of2)
S:\AAA--9 ! aster Projects\Five Horizons Development\FHD-005 - Brownfield Consulting - S. Saunders St. RaleigMBrownfields Assessment (Soil Gas and Limited Groundwater)\Report\Tables\S. Saunders Data Tables Hart &Hickman, 1.

Table 2
Summary of Groundwater Analytical Data
South Saunders Street Assemblage
Raleigh, North Carolina
Brownfields Project No. 21050-17-092
H&H Job No. FHD-005
Notes:
1) North Carolina Department of Environmental Quality (DEQ) 15A NCAC 02L.0202 Groundwater Standards (NC 2L Standards) (April 2013).
2) DEQ Vapor Intrusion Ground Water Screening Levels (GWSLs) (February 2018).
Only compounds detected in at least one sample are shown.
Compound concentrations reported to the laboratorty method detection limits.
Concentrations are reported in micrograms per liter (Ng/L).
Laboratory analytical method is shown in parentheses.
Bold values indicate compounds detected above NC 2L Standard (April 2013).
Underlined values indicate compounds detected above Residential GWSLs.
J = Estimated value that is less than the laboratory reporting limit and greater than or equal to the method detection limit
NE = Not Established
Table 2 (Page 2 of2)
S:\AAA--9 ! aster Projects\Five Horizons Development\FHD-005 - Brownfield Consulting - S. Saunders St. RaleigMBrownfields Assessment (Soil Gas and Limited Groundwater)\Report\Tables\S. Saunders Data Tables Hart &Hickman, 1.

North Carolina Department of Environmental Quality
Risk Calculator
Version Date:
February 2018
Basis:
November 2017 EPA RSL Table
Site Name:
South Saunders Street Assemblage
Site Address:
South Saunders Street, Raleigh, North Carolina
DEQ Section:
Brownfields Program
Site ID:
21050-17-092
Exposure Unit ID:
1001 South Saunders Street- SSVP-1
Submittal Date:
Prepared By:
Hart & Hickman, PC
Reviewed By:
Justin Ballard
North Carolina DEQ Risk Calculator

Table of Contents
Version Date: February 2018
Basis: November 2017 EPA RSL Table
Site ID: 21050-17-092
Exposure Unit ID:
1001 South Saunders Street- SSVP-1
Form No.
Description
Check box
if included
DATA INPUT SHEETS
Input Section 1 - Exposure Pathways & Parameters
Input Form lA
Complete Exposure Pathways
El
Input Form I
Input Form 1 C
Exposure Factors and Target Risks
Contaminant Migration Parameters
❑
❑
Input Form I
Sample Statistics
❑
Input Section 2 - Exposure Point Concentrations
Input Form 2A
Surface Soil Exposure Point Concentration Table
❑
Input Form 2B
Subsurface Soil Exposure Point Concentration Table
❑
Input Form 2C
Groundwater Exposure Point Concentration Table
❑
Input Form 2D
Surface Water Exposure Point Concentration Table
❑
Input Form 2E
Input Form 2F
Soil Gas Exposure Point Concentration Table
Indoor Air Exposure Point Concentration Table
0
❑
DATA OUTPUT SHEETS
Output Section 1 - Summary Output for All Calculators
Output Form IA
Summary of Risk Assessment Output
0
Output Section 2 - Primary Calculators
Output Form 2A
Resident Soil Combined Pathways
❑
Output Form 2B
Resident Groundwater Combined Pathways
❑
Output Form 2C
Non -Residential Worker Soil Combined Pathways
❑
Output Form 2D
Non -Residential Worker Groundwater Combined Pathways
❑
Output Form 2E
Construction Worker Soil Combined Pathways
❑
Output Form 2F
User Defined Soil Combined Pathways
❑
Output Form 2G
User Defined Surface Water Combined Pathways
❑
Output Section 3 - Vapor Intrusion Calculators
Output Form 3A
Resident Groundwater to Indoor Air
❑
Output Form 3B
Resident Soil Gas to Indoor Air
0
Output Form 3C
Resident Indoor Air
❑
Output Form 3D
Non -Residential Worker Groundwater to Indoor Air
❑
Output Form 3E
Non -Residential Worker Soil Gas to Indoor Air
0
Output Form 3F
Non -Residential Worker Indoor Air
❑
Output Section 4 - Contaminant Migration to Point of Exposure (POE) Worksheets
Output Form 4A
Soil Source to Groundwater POE - Forward Mode
❑
Output Form 4B
Groundwater Source to Groundwater POE - Forward Mode
❑
Output Form 4C
Soil Source to Surface Water POE - Forward Mode
❑
Output Form 4D
Groundwater Source to Surface Water POE - Forward Mode
❑
Output Form 4E
Soil Source to Groundwater POE - Backward Mode
❑
Output Form 4F
Groundwater Source to Groundwater POE - Backward Mode
❑
Output Form 4G
Soil Source to Surface Water POE - Backward Mode
❑
Output Form 4H
Groundwater Source to Surface Water POE - Backward Mode
❑
North Carolina DEQ Risk Calculator

Complete Exposure Pathways
Version Date: February 2018
Basis: November 2017 EPA RSL Table
Site ID: 21050-17-092
Exposure Unit ID: 1001 South Saunders Street- SSVP-1
Note: Risk output will only be calculated for complete exposure pathways.
Receptor
Pathway
Check box if
pathway
complete
PRIMARY PATHWAYS
Resident
Soil Combined Pathways
[ ]
Groundwater Combined Pathways
Ll
Non -Residential Worker
Soil Combined Pathways
❑
Groundwater Combined Pathways
❑
Construction Worker
Soil Combined Pathways
❑
User Defined
Soil Combined Pathways
❑
Surface Water Combined Pathways
❑
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
0
Indoor Air
❑
CONTAMINANT MIGRATION PATHWAYS
Protection of Groundwater Use
Source Soil
❑
Source Groundwater
❑
Protection of Surface Water
Source Soil
❑
Source Groundwater
❑
North Carolina DEQ Risk Calculator

xposure Point Concentrations
ersion Date: February 2018
November 2017 EPA RSL Table
ID: 21050-17-092
Unit ID: 1001 South Saunders Street- SSVP-1
Soil Gas Exposure Point Concentration Table
Note: Chemicals highlighted in orange are non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals.
Exposure Point
Minimum
Maximum
Location of
Range of
Concentration
Screening
Potential
Potential
Rationale for
Concentration
Justification for Exposure Point
CAS Number
Chemical
Concentration
Concentration
Units
Maximum
Detection
Detection
Used for
Background
Toxicity Value
ARAR/TBC
ARAR/TBC
COPC Flag
Selection or
3
(ug/m)
Concentration
(Qualifier)
(Qualifier)
Concentration
Frequency
Limits
Screening
Value
(Screening
Value
Source
(Y/N)
Deletion
Level) (n/c)
37
67-64-1
Acetone
ug/m3
4.2
67-66-3
Chloroform
ug/m3
9
67-63-0
Isopropanol
ug/m3
4
78-93-3
Methyl Ethyl Ketone (2-Butanone)
ug/m3
1.3
75-09-2
Methylene Chloride
ug/m3
570
127-18-4
Tetrachloroethylene
ug/m3
2.6
108-88-3
Toluene
ug/m3
550
79-01-6
Trichloroethylene
ug/m3
1.6
1 75-69-4
1 Trichlorofluoromethane
ug/m3
North Carolina DEQ Risk Calculator

Summary of Risk Assessment Output
Version Date: February 2018
Basis: November 2017 EPA RSL Table
Site ID: 21050-17-092
Exposure Unit ID: 1001 South Saunders Street- SSVP-1
PRIMARY CALCULATORS
Receptor
Pathway
Carcinogenic
Hazard Index
Risk exceeded?
Resident
Soil Combined Pathways
NC
NC
NC
Groundwater Combined Pathways*
NC
NC
NC
Non -Residential Worker
Soil Combined Pathways
NC
NC
NC
Groundwater Combined Pathways*
NC
NC
NC
Construction Worker
Soil Combined Pathways
NC
NC
NC
User Defined
Soil Combined Pathways
NC
NC
NC
Surface Water Combined Pathways*
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
3.7E-05
8.3E+00
YES
Indoor Air
NC
NC
NC
Non -Residential Worker
Groundwater to Indoor Air
NC
NC
NC
Soil Gas to Indoor Air
2.0E-06
6.6E-01
NO
Indoor Air
NC
NC
NC
CONTAMINANT MIGRATION CALCULATORS
Pathway
Source
Target POE Concentrations Exceeded?
Protection of Groundwater Use
Source Soil
Exceedence of 2L at POE?
NC
Source Groundwater
Exceedence of 2L at POE?
NC
Protection of Surface Water
Source Soil
Exceedence of 2B at POE?
NC
Source Groundwater
Exceedence of 213 at POE?
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 213 Standards, appropriate remediation and/or institutional control measures will be necessary to be eligible for a
risk -based closure.
North Carolina DEQ Risk Calculator

DEQ Risk Calculator - Vapor Intrusion - Resident Soil Gas to Indoor Air 1
Version Date: February 2018
Basis: November 2017 EPA RSL Table
Site ID: 21050-17-092
IExnosure Unit ID: 1001 South Saunders Street- SSVP-1
Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion
risk, no risk values are calculated for these chemicals.
All concentrations are in u m3
Calculated
Target Indoor
Target Indoor Air
Calculated
Soil Gas
Calculated
Non -
CAS #
Chemical Name:
Concentration
Indoor Air
Air Conc. for
Conc. for Non -
Carcinogenic
Carcinogenic
3
(ug/m)
Concentration
Carcinogens @
Carcinogens @
Risk
Hazard
(ug/ms)
TCR = 1 E-06
THQ = 0.2
Quotient
67-64-1
Acetone
37
1.11
-
6.5E+03
3.4E-05
67-66-3
Chloroform
4.2
0.126
1.2E-01
2.0E+01
1.0E-06
1.2E-03
67-63-0
Isopropanol
9
0.27
-
4.2E+01
1.3E-03
78-93-3
Methyl Ethyl Ketone (2-Butanone)
4
0.12
-
1.0E+03
2.3E-05
75-09-2
Methylene Chloride
1.3
0.039
1.0E+02
1.3E+02
3.8E-10
6.2E-05
127-18-4
Tetrachloroethylene
570
17.1
1.1E+01
8.3E+00
1.6E-06
4.1E-01
108-88-3
Toluene
2.6
0.078
-
1.0E+03
1.5E-05
79-01-6
Trichloroethylene
550
16.5
4.8E-01
4.2E-01
3.4E-05
7.9E+00
75-69-4
Trichlorofluoromethane
1.6
0.048
-
-
Cumulative: I 3.7E-05 I 8.3E+00
North Carolina DEQ Risk Calculator

DEQ Risk Calculator - Vapor Intrusion - Non -Residential Worker Soil Gas to Indoor Air
Version Date: February 2018
: November 2017 EPA RSL Table
Site ID: 21050-17-092
Unit ID: 1001 South Saunders Street- SSVP-1
Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion
risk, no risk values are calculated for these chemicals.
All concentrations are in u /m3
Calculated
Target Indoor
Target Indoor Air
Calculated
Soil Gas
Indoor Air
Air Conc. for
Conc. for Non -
Calculated
Non -
CAS #
Chemical Name:
Concentration
Carcinogenic
Carcinogenic
3
(ug/m)
Concentration
Carcinogens @
Carcinogens @
Risk
Hazard
(ug/m3)
TCR = 1 E-06
THQ = 0.2
Quotient
67-64-1
Acetone
37
0.37
-
2.7E+04
2.7E-06
67-66-3
Chloroform
4.2
0.042
5.3E-01
8.6E+01
7.9E-08
9.8E-05
67-63-0
Isopropanol
9
0.09
-
1.8E+02
1.0E-04
78-93-3
Methyl Ethyl Ketone (2-Butanone)
4
0.04
-
4.4E+03
1.8E-06
75-09-2
Methylene Chloride
1.3
0.013
1.2E+03
5.3E+02
1.1E-1 l
4.9E-06
127-18-4
Tetrachloroethylene
570
5.7
4.7E+01
3.5E+01
1.2E-07
3.3E-02
108-88-3
Toluene
2.6
0.026
-
4.4E+03
1.2E-06
79-01-6
Trichloroeth lene
550
5.5
3.0E+00
1.8E+00
1.8E-06
6.3E-01
75-69-4
Trichlorofluoromethane
1.6
0.016
-
-
Cumulative: I 2.0E-06 I 6.6E-01
North Carolina DEQ Risk Calculator

North Carolina Department of Environmental Quality
Risk Calculator
Version Date:
February 2018
Basis:
November 2017 EPA RSL Table
Site Name:
South Saunders Street Assemblage
Site Address:
South Saunders Street, Raleigh, North Carolina
DEQ Section:
Brownfields Program
Site ID:
21050-17-092
Exposure Unit ID:
1001 South Saunders Street-SSVP-2
Submittal Date:
Prepared By:
Hart & Hickman, PC
Reviewed By:
Justin Ballard
North Carolina DEQ Risk Calculator

Table of Contents
Version Date: February 2018
Basis: November 2017 EPA RSL Table
Site ID: 21050-17-092
Exposure Unit ID:
1001 South Saunders Street-SSVP-2
Form No.
Description
Check box
if included
DATA INPUT SHEETS
Input Section 1 - Exposure Pathways & Parameters
Input Form lA
Complete Exposure Pathways
El
Input Form I
Input Form 1 C
Exposure Factors and Target Risks
Contaminant Migration Parameters
❑
❑
Input Form I
Sample Statistics
❑
Input Section 2 - Exposure Point Concentrations
Input Form 2A
Surface Soil Exposure Point Concentration Table
❑
Input Form 2B
Subsurface Soil Exposure Point Concentration Table
❑
Input Form 2C
Groundwater Exposure Point Concentration Table
❑
Input Form 2D
Surface Water Exposure Point Concentration Table
❑
Input Form 2E
Input Form 2F
Soil Gas Exposure Point Concentration Table
Indoor Air Exposure Point Concentration Table
0
❑
DATA OUTPUT SHEETS
Output Section 1 - Summary Output for All Calculators
Output Form IA
Summary of Risk Assessment Output
0
Output Section 2 - Primary Calculators
Output Form 2A
Resident Soil Combined Pathways
❑
Output Form 2B
Resident Groundwater Combined Pathways
❑
Output Form 2C
Non -Residential Worker Soil Combined Pathways
❑
Output Form 2D
Non -Residential Worker Groundwater Combined Pathways
❑
Output Form 2E
Construction Worker Soil Combined Pathways
❑
Output Form 2F
User Defined Soil Combined Pathways
❑
Output Form 2G
User Defined Surface Water Combined Pathways
❑
Output Section 3 - Vapor Intrusion Calculators
Output Form 3A
Resident Groundwater to Indoor Air
❑
Output Form 3B
Resident Soil Gas to Indoor Air
0
Output Form 3C
Resident Indoor Air
❑
Output Form 3D
Non -Residential Worker Groundwater to Indoor Air
❑
Output Form 3E
Non -Residential Worker Soil Gas to Indoor Air
0
Output Form 3F
Non -Residential Worker Indoor Air
❑
Output Section 4 - Contaminant Migration to Point of Exposure (POE) Worksheets
Output Form 4A
Soil Source to Groundwater POE - Forward Mode
❑
Output Form 4B
Groundwater Source to Groundwater POE - Forward Mode
❑
Output Form 4C
Soil Source to Surface Water POE - Forward Mode
❑
Output Form 4D
Groundwater Source to Surface Water POE - Forward Mode
❑
Output Form 4E
Soil Source to Groundwater POE - Backward Mode
❑
Output Form 4F
Groundwater Source to Groundwater POE - Backward Mode
❑
Output Form 4G
Soil Source to Surface Water POE - Backward Mode
❑
Output Form 4H
Groundwater Source to Surface Water POE - Backward Mode
❑
North Carolina DEQ Risk Calculator

Complete Exposure Pathways
Version Date: February 2018
Basis: November 2017 EPA RSL Table
Site ID: 21050-17-092
Exposure Unit ID: 1001 South Saunders Street-SSVP-2
Note: Risk output will only be calculated for complete exposure pathways.
Receptor
Pathway
Check box if
pathway
complete
PRIMARY PATHWAYS
Resident
Soil Combined Pathways
[ ]
Groundwater Combined Pathways
Ll
Non -Residential Worker
Soil Combined Pathways
❑
Groundwater Combined Pathways
❑
Construction Worker
Soil Combined Pathways
❑
User Defined
Soil Combined Pathways
❑
Surface Water Combined Pathways
❑
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
0
Indoor Air
❑
CONTAMINANT MIGRATION PATHWAYS
Protection of Groundwater Use
Source Soil
❑
Source Groundwater
❑
Protection of Surface Water
Source Soil
❑
Source Groundwater
❑
North Carolina DEQ Risk Calculator

xposure Point Concentrations
ersion Date: February 2018
November 2017 EPA RSL Table
ID: 21050-17-092
Unit ID: 1001 South Saunders Street-SSVP-2
Soil Gas Exposure Point Concentration Table
Note: Chemicals highlighted in orange are non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals.
Exposure Point
Minimum
Maximum
Location of
Range of
Concentration
Screening
Potential
Potential
Rationale for
Concentration
Justification for Exposure Point
CAS Number
Chemical
Concentration
Concentration
Units
Maximum
Detection
Detection
Used for
Background
Toxicity Value
ARAR/TBC
ARAR/TBC
COPC Flag
Selection or
3
(ug/m)
Concentration
(Qualifier)
(Qualifier)
Concentration
Frequency
Limits
Screening
Value
(Screening
Value
Source
(Y/N)
Deletion
Level) (n/c)
48
67-64-1
Acetone
ug/m3
48
56-23-5
Carbon Tetrachloride
ug/m3
2.7
67-66-3
Chloroform
ug/m3
13
75-34-3
Dichloroethane, 1,1-
ug/m3
150
75-35-4
Dichloroethylene, 1,1-
ug/m3
11
141-78-6
Ethyl Acetate
ug/m3
13
67-63-0
Isopropanol
ug/m3
2.5
75-09-2
Methylene Chloride
ug/m3
31
127-18-4
Tetrachloroethylene
ug/m3
14
108-88-3
Toluene
ug/m3
300
71-55-6
Trichloroethane, 1,1,1-
ug/m3
11
79-01-6
Trichloroethylene
ug/m3
2.5
75-69-4
Trichlorofluoromethane
ug/m3
2.8
95-63-6
Trimethylbenzene, 1,2,4-
ug/m3
1.3
1 108-67-8
Trimethylbenzene, 1,3,5-
ug/m3
12.6
1 1330-20-7
Xylenes
ug/m3
North Carolina DEQ Risk Calculator

Summary of Risk Assessment Output
Version Date: February 2018
Basis: November 2017 EPA RSL Table
Site ID: 21050-17-092
Exposure Unit ID: 1001 South Saunders Street-SSVP-2
PRIMARY CALCULATORS
Receptor
Pathway
Carcinogenic
Hazard Index
Risk exceeded?
Resident
Soil Combined Pathways
NC
NC
NC
Groundwater Combined Pathways*
NC
NC
NC
Non -Residential Worker
Soil Combined Pathways
NC
NC
NC
Groundwater Combined Pathways*
NC
NC
NC
Construction Worker
Soil Combined Pathways
NC
NC
NC
User Defined
Soil Combined Pathways
NC
NC
NC
Surface Water Combined Pathways*
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
4.7E-06
2.3E-01
NO
Indoor Air
NC
NC
NC
Non -Residential Worker
Groundwater to Indoor Air
NC
NC
NC
Soil Gas to Indoor Air
3.5E-07
1.8E-02
NO
Indoor Air
NC
NC
NC
CONTAMINANT MIGRATION CALCULATORS
Pathway
Source
Target POE Concentrations Exceeded?
Protection of Groundwater Use
Source Soil
Exceedence of 2L at POE?
NC
Source Groundwater
Exceedence of 2L at POE?
NC
Protection of Surface Water
Source Soil
Exceedence of 2B at POE?
NC
Source Groundwater
Exceedence of 213 at POE?
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 213 Standards, appropriate remediation and/or institutional control measures will be necessary to be eligible for a
risk -based closure.
North Carolina DEQ Risk Calculator

DEQ Risk Calculator - Vapor Intrusion - Resident Soil Gas to Indoor Air 1
Version Date: February 2018
Basis: November 2017 EPA RSL Table
Site ID: 21050-17-092
IExnosure Unit ID: 1001 South Saunders Street-SSVP-2
Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion
risk, no risk values are calculated for these chemicals.
All concentrations are in u m3
CAS #
Chemical Name:
Soil Gas
Concentration
3
(ug/m)
Calculated
Indoor Air
Concentration
(ug/ms)
Target Indoor
Air Conc. for
Carcinogens @
TCR = 1 E-06
Target Indoor Air
Conc. for Non -
Carcinogens @
THQ = 0.2
Calculated
Carcinogenic
Risk
Calculated
Non -
Carcinogenic
Hazard
Quotient
67-64-1
Acetone
48
1.44
-
6.5E+03
4.5E-05
56-23-5
Carbon Tetrachloride
48
1.44
4.7E-01
2.1E+01
3.1E-06
1.4E-02
67-66-3
Chloroform
2.7
0.081
1.2E-01
2.0E+01
6.6E-07
7.9E-04
75-34-3
Dichloroethane, 1,1-
13
0.39
1.8E+00
-
2.2E-07
75-35-4
Dichloroethylene, 1,1-
150
4.5
-
4.2E+01
2.2E-02
141-78-6
Ethyl Acetate
11
0.33
-
1.5E+01
4.5E-03
67-63-0
Isopropanol
13
0.39
-
4.2E+01
1.9E-03
75-09-2
Methylene Chloride
2.5
0.075
1.0E+02
1.3E+02
7.4E-10
1.2E-04
127-18-4
Tetrachloroethylene
31
0.93
1.1E+01
8.3E+00
8.6E-08
2.2E-02
108-88-3
Toluene
14
0.42
-
1.0E+03
8.1E-05
71-55-6
Trichloroethane, 1,1,1-
300
9
-
1.0E+03
1.7E-03
79-01-6
Trichloroethylene
11
0.33
4.8E-01
4.2E-01
6.9E-07
1.6E-01
75-69-4
Trichlorofluoromethane
2.5
0.075
-
-
95-63-6
Trimethylbenzene, 1,2,4-
2.8
0.084
-
1.3E+01
1.3E-03
108-67-8
Trimethylbenzene, 1,3,5-
1.3
0.039
-
1.3E+01
6.2E-04
1330-20-7
Xylenes
12.6
0.378
-
2.1E+01
3.6E-03
Cumulative: I 4.7E-06 I 2.3E-01
North Carolina DEQ Risk Calculator

DEQ Risk Calculator - Vapor Intrusion - Non -Residential Worker Soil Gas to Indoor Air
Version Date: February 2018
: November 2017 EPA RSL Table
Site ID: 21050-17-092
Unit ID: 1001 South Saunders Street-SSVP-2
Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion
risk, no risk values are calculated for these chemicals.
All concentrations are in u /m3
CAS #
Chemical Name:
Soil Gas
Concentration
3
(ug/m)
Calculated
Indoor Air
Concentration
(ug/m3)
Target Indoor
Air Conc. for
Carcinogens @
TCR = 1 E-06
Target Indoor Air
Conc. for Non -
Carcinogens @
THQ = 0.2
Calculated
Carcinogenic
Risk
Calculated
Non -
Carcinogenic
Hazard
Quotient
67-64-1
Acetone
48
0.48
-
2.7E+04
3.5E-06
56-23-5
Carbon Tetrachloride
48
0.48
2.0E+00
8.8E+01
2.3E-07
1.1E-03
67-66-3
Chloroform
2.7
0.027
5.3E-01
8.6E+01
5.1E-08
6.3E-05
75-34-3
Dichloroethane, 1,1-
13
0.13
7.7E+00
-
1.7E-08
75-35-4
Dichloroethylene, 1,1-
150
1.5
-
1.8E+02
1.7E-03
141-78-6
Ethyl Acetate
11
0.11
-
6.1E+01
3.6E-04
67-63-0
Isopropanol
13
0.13
-
1.8E+02
1.5E-04
75-09-2
Methylene Chloride
2.5
0.025
1.2E+03
5.3E+02
2.0E-11
9.5E-06
127-18-4
Tetrachloroethylene
31
0.31
4.7E+01
3.5E+01
6.6E-09
1.8E-03
108-88-3
Toluene
14
0.14
-
4.4E+03
6.4E-06
71-55-6
Trichloroethane, 1,1,1-
300
3
-
4.4E+03
1.4E-04
79-01-6
Trichloroeth lene
11
0.11
3.0E+00
1.8E+00
3.7E-08
1.3E-02
75-69-4
Trichlorofluoromethane
2.5
0.025
-
-
95-63-6
Trimeth lbenzene, 1,2,4-
2.8
0.028
-
5.3E+01
1.1E-04
108-67-8
Trimethylbenzene, 1,3,5-
1.3
0.013
-
5.3E+01
4.9E-05
1330-20-7
Xylenes
12.6
0.126
-
8.8E+01
2.9E-04
Cumulative: I 3.5E-07 I 1.8E-02
North Carolina DEQ Risk Calculator

North Carolina Department of Environmental Quality
Risk Calculator
Version Date:
February 2018
Basis:
November 2017 EPA RSL Table
Site Name:
South Saunders Street Assemblage
Site Address:
South Saunders Street, Raleigh, North Carolina
DEQ Section:
Brownfields Program
Site ID:
21050-17-092
Exposure Unit ID:
1015A South Saunders Street- SSVP-3
Submittal Date:
Prepared By:
Hart & Hickman, PC
Reviewed By:
Justin Ballard
North Carolina DEQ Risk Calculator

Table of Contents
Version Date: February 2018
Basis: November 2017 EPA RSL Table
Site ID: 21050-17-092
Exposure Unit ID:
1015A South Saunders Street- SSVP-3
Form No.
Description
Check box
if included
DATA INPUT SHEETS
Input Section 1 - Exposure Pathways & Parameters
Input Form lA
Complete Exposure Pathways
El
Input Form I
Input Form 1 C
Exposure Factors and Target Risks
Contaminant Migration Parameters
❑
❑
Input Form I
Sample Statistics
❑
Input Section 2 - Exposure Point Concentrations
Input Form 2A
Surface Soil Exposure Point Concentration Table
❑
Input Form 2B
Subsurface Soil Exposure Point Concentration Table
❑
Input Form 2C
Groundwater Exposure Point Concentration Table
❑
Input Form 2D
Surface Water Exposure Point Concentration Table
❑
Input Form 2E
Input Form 2F
Soil Gas Exposure Point Concentration Table
Indoor Air Exposure Point Concentration Table
0
❑
DATA OUTPUT SHEETS
Output Section 1 - Summary Output for All Calculators
Output Form IA
Summary of Risk Assessment Output
0
Output Section 2 - Primary Calculators
Output Form 2A
Resident Soil Combined Pathways
❑
Output Form 2B
Resident Groundwater Combined Pathways
❑
Output Form 2C
Non -Residential Worker Soil Combined Pathways
❑
Output Form 2D
Non -Residential Worker Groundwater Combined Pathways
❑
Output Form 2E
Construction Worker Soil Combined Pathways
❑
Output Form 2F
User Defined Soil Combined Pathways
❑
Output Form 2G
User Defined Surface Water Combined Pathways
❑
Output Section 3 - Vapor Intrusion Calculators
Output Form 3A
Resident Groundwater to Indoor Air
❑
Output Form 3B
Resident Soil Gas to Indoor Air
0
Output Form 3C
Resident Indoor Air
❑
Output Form 3D
Non -Residential Worker Groundwater to Indoor Air
❑
Output Form 3E
Non -Residential Worker Soil Gas to Indoor Air
0
Output Form 3F
Non -Residential Worker Indoor Air
❑
Output Section 4 - Contaminant Migration to Point of Exposure (POE) Worksheets
Output Form 4A
Soil Source to Groundwater POE - Forward Mode
❑
Output Form 4B
Groundwater Source to Groundwater POE - Forward Mode
❑
Output Form 4C
Soil Source to Surface Water POE - Forward Mode
❑
Output Form 4D
Groundwater Source to Surface Water POE - Forward Mode
❑
Output Form 4E
Soil Source to Groundwater POE - Backward Mode
❑
Output Form 4F
Groundwater Source to Groundwater POE - Backward Mode
❑
Output Form 4G
Soil Source to Surface Water POE - Backward Mode
❑
Output Form 4H
Groundwater Source to Surface Water POE - Backward Mode
❑
North Carolina DEQ Risk Calculator

Complete Exposure Pathways
Version Date: February 2018
Basis: November 2017 EPA RSL Table
Site ID: 21050-17-092
Exposure Unit ID: 1015A South Saunders Street- SSVP-3
Note: Risk output will only be calculated for complete exposure pathways.
Receptor
Pathway
Check box if
pathway
complete
PRIMARY PATHWAYS
Resident
Soil Combined Pathways
[ ]
Groundwater Combined Pathways
Ll
Non -Residential Worker
Soil Combined Pathways
❑
Groundwater Combined Pathways
❑
Construction Worker
Soil Combined Pathways
❑
User Defined
Soil Combined Pathways
❑
Surface Water Combined Pathways
❑
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
0
Indoor Air
❑
CONTAMINANT MIGRATION PATHWAYS
Protection of Groundwater Use
Source Soil
❑
Source Groundwater
❑
Protection of Surface Water
Source Soil
❑
Source Groundwater
❑
North Carolina DEQ Risk Calculator

xposure Point Concentrations
ersion Date: February 2018
November 2017 EPA RSL Table
ID: 21050-17-092
Unit ID: 1015A South Saunders Street- SSVP-3
Soil Gas Exposure Point Concentration Table
Note: Chemicals highlighted in orange are non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals.
Exposure Point
Minimum
Maximum
Location of
Range of
Concentration
Screening
Potential
Potential
Rationale for
Concentration
Justification for Exposure Point
CAS Number
Chemical
Concentration
Concentration
Units
Maximum
Detection
Detection
Used for
Background
Toxicity Value
ARAR/TBC
ARAR/TBC
COPC Flag
Selection or
3
(ug/m)
Concentration
(Qualifier)
(Qualifier)
Concentration
Frequency
Limits
Screening
Value
(Screening
Value
Source
(Y/N)
Deletion
Level) (n/c)
180
67-64-1
Acetone
ug/m3
44
71-43-2
Benzene
ug/m3
4300
75-34-3
Dichloroethane, 1,1-
ug/m3
27000
75-35-4
Dichloroethylene, 1,1-
ug/m3
11
108-88-3
Toluene
ug/m3
50000
71-55-6
Trichloroethane, 1,1,1-
ug/m3
North Carolina DEQ Risk Calculator

Summary of Risk Assessment Output
Version Date: February 2018
Basis: November 2017 EPA RSL Table
Site ID: 21050-17-092
Exposure Unit ID: 1015A South Saunders Street- SSVP-3
PRIMARY CALCULATORS
Receptor
Pathway
Carcinogenic
Hazard Index
Risk exceeded?
Resident
Soil Combined Pathways
NC
NC
NC
Groundwater Combined Pathways*
NC
NC
NC
Non -Residential Worker
Soil Combined Pathways
NC
NC
NC
Groundwater Combined Pathways*
NC
NC
NC
Construction Worker
Soil Combined Pathways
NC
NC
NC
User Defined
Soil Combined Pathways
NC
NC
NC
Surface Water Combined Pathways*
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
7.7E-05
4.2E+00
YES
Indoor Air
NC
NC
NC
Non -Residential Worker
Groundwater to Indoor Air
NC
NC
NC
Soil Gas to Indoor Air
5.9E-06
3.3E-01
NO
Indoor Air
NC
NC
NC
CONTAMINANT MIGRATION CALCULATORS
Pathway
Source
Target POE Concentrations Exceeded?
Protection of Groundwater Use
Source Soil
Exceedence of 2L at POE?
NC
Source Groundwater
Exceedence of 2L at POE?
NC
Protection of Surface Water
Source Soil
Exceedence of 2B at POE?
NC
Source Groundwater
Exceedence of 213 at POE?
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 213 Standards, appropriate remediation and/or institutional control measures will be necessary to be eligible for a
risk -based closure.
North Carolina DEQ Risk Calculator

DEQ Risk Calculator - Vapor Intrusion - Resident Soil Gas to Indoor Air 1
Version Date: February 2018
Basis: November 2017 EPA RSL Table
Site ID: 21050-17-092
IExnosure Unit ID: 1015A South Saunders Street- SSVP-3
Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion
risk, no risk values are calculated for these chemicals.
All concentrations are in u m3
Calculated
Target Indoor
Target Indoor Air
Calculated
Soil Gas
Indoor Air
Air Conc. for
Conc. for Non -
Calculated
Non -
CAS #
Chemical Name:
Concentration
Carcinogenic
Carcinogenic
3
(ug/m)
Concentration
Carcinogens @
Carcinogens @
Risk
Hazard
(ug/ms)
TCR = 1 E-06
THQ = 0.2
Quotient
67-64-1
Acetone
180
5.4
-
6.5E+03
1.7E-04
71-43-2
Benzene
44
1.32
3.6E-01
6.3E+00
3.7E-06
4.2E-02
75-34-3
Dichloroethane, 1,1-
4300
129
1.8E+00
-
7.4E-05
75-35-4
Dichloroethylene, 1,1-
27000
810
-
4.2E+01
3.9E+00
108-88-3
Toluene
11
0.33
-
1.0E+03
6.3E-05
71-55-6
Trichloroethane, 1,1,1-
50000
1500
-
1.0E+03
2.9E-01
Cumulative: I 7.7E-05 I 4.2E+00
North Carolina DEQ Risk Calculator

DEQ Risk Calculator - Vapor Intrusion - Non -Residential Worker Soil Gas to Indoor Air
Version Date: February 2018
: November 2017 EPA RSL Table
Site ID: 21050-17-092
Unit ID: 1015A South Saunders Street- SSVP-3
Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion
risk, no risk values are calculated for these chemicals.
All concentrations are in u /m3
Calculated
Target Indoor
Target Indoor Air
Calculated
Soil Gas
Indoor Air
Air Conc. for
Conc. for Non -
Calculated
Non -
CAS #
Chemical Name:
Concentration
Concentration
Carcinogens @
Carcinogens @
Carcinogenic
Carcinogenic
3
(ug/m)
(ug/m3)
TCR = 1 E-06
THQ = 0.2
Risk
Hazard
Quotient
67-64-1
Acetone
180
1.8
-
2.7E+04
1.3E-05
71-43-2
Benzene
44
0.44
1.6E+00
2.6E+01
2.8E-07
3.3E-03
75-34-3
Dichloroethane, 1,1-
4300
43
7.7E+00
-
5.6E-06
75-35-4
Dichloroethylene, 1,1-
27000
270
-
1.8E+02
3.1E-01
108-88-3
Toluene
11
0.11
-
4.4E+03
5.0E-06
71-55-6
Trichloroethane, 1,1,1-
50000
500
-
4.4E+03
2.3E-02
Cumulative: I 5.9E-06 I 3.3E-01
North Carolina DEQ Risk Calculator

North Carolina Department of Environmental Quality
Risk Calculator
Version Date:
February 2018
Basis:
November 2017 EPA RSL Table
Site Name:
South Saunders Street Assemblage
Site Address:
South Saunders Street, Raleigh, North Carolina
DEQ Section:
Brownfields Program
Site ID:
21050-17-092
Exposure Unit ID:
1015A South Saunders Street- SSVP-4
Submittal Date:
Prepared By:
Hart & Hickman, PC
Reviewed By:
Justin Ballard
North Carolina DEQ Risk Calculator

Table of Contents
Version Date: February 2018
Basis: November 2017 EPA RSL Table
Site ID: 21050-17-092
Exposure Unit ID:
1015A South Saunders Street- SSVP-4
Form No.
Description
Check box
if included
DATA INPUT SHEETS
Input Section 1 - Exposure Pathways & Parameters
Input Form lA
Complete Exposure Pathways
El
Input Form I
Input Form 1 C
Exposure Factors and Target Risks
Contaminant Migration Parameters
❑
❑
Input Form I
Sample Statistics
❑
Input Section 2 - Exposure Point Concentrations
Input Form 2A
Surface Soil Exposure Point Concentration Table
❑
Input Form 2B
Subsurface Soil Exposure Point Concentration Table
❑
Input Form 2C
Groundwater Exposure Point Concentration Table
❑
Input Form 2D
Surface Water Exposure Point Concentration Table
❑
Input Form 2E
Input Form 2F
Soil Gas Exposure Point Concentration Table
Indoor Air Exposure Point Concentration Table
0
❑
DATA OUTPUT SHEETS
Output Section 1 - Summary Output for All Calculators
Output Form IA
Summary of Risk Assessment Output
0
Output Section 2 - Primary Calculators
Output Form 2A
Resident Soil Combined Pathways
❑
Output Form 2B
Resident Groundwater Combined Pathways
❑
Output Form 2C
Non -Residential Worker Soil Combined Pathways
❑
Output Form 2D
Non -Residential Worker Groundwater Combined Pathways
❑
Output Form 2E
Construction Worker Soil Combined Pathways
❑
Output Form 2F
User Defined Soil Combined Pathways
❑
Output Form 2G
User Defined Surface Water Combined Pathways
❑
Output Section 3 - Vapor Intrusion Calculators
Output Form 3A
Resident Groundwater to Indoor Air
❑
Output Form 3B
Resident Soil Gas to Indoor Air
0
Output Form 3C
Resident Indoor Air
❑
Output Form 3D
Non -Residential Worker Groundwater to Indoor Air
❑
Output Form 3E
Non -Residential Worker Soil Gas to Indoor Air
0
Output Form 3F
Non -Residential Worker Indoor Air
❑
Output Section 4 - Contaminant Migration to Point of Exposure (POE) Worksheets
Output Form 4A
Soil Source to Groundwater POE - Forward Mode
❑
Output Form 4B
Groundwater Source to Groundwater POE - Forward Mode
❑
Output Form 4C
Soil Source to Surface Water POE - Forward Mode
❑
Output Form 4D
Groundwater Source to Surface Water POE - Forward Mode
❑
Output Form 4E
Soil Source to Groundwater POE - Backward Mode
❑
Output Form 4F
Groundwater Source to Groundwater POE - Backward Mode
❑
Output Form 4G
Soil Source to Surface Water POE - Backward Mode
❑
Output Form 4H
Groundwater Source to Surface Water POE - Backward Mode
❑
North Carolina DEQ Risk Calculator

Complete Exposure Pathways
Version Date: February 2018
Basis: November 2017 EPA RSL Table
Site ID: 21050-17-092
Exposure Unit ID: 1015A South Saunders Street- SSVP-4
Note: Risk output will only be calculated for complete exposure pathways.
Receptor
Pathway
Check box if
pathway
complete
PRIMARY PATHWAYS
Resident
Soil Combined Pathways
[ ]
Groundwater Combined Pathways
Ll
Non -Residential Worker
Soil Combined Pathways
❑
Groundwater Combined Pathways
❑
Construction Worker
Soil Combined Pathways
❑
User Defined
Soil Combined Pathways
❑
Surface Water Combined Pathways
❑
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
0
Indoor Air
❑
CONTAMINANT MIGRATION PATHWAYS
Protection of Groundwater Use
Source Soil
❑
Source Groundwater
❑
Protection of Surface Water
Source Soil
❑
Source Groundwater
❑
North Carolina DEQ Risk Calculator

xposure Point Concentrations
ersion Date: February 2018
November 2017 EPA RSL Table
ID: 21050-17-092
Unit ID: 1015A South Saunders Street- SSVP-4
Soil Gas Exposure Point Concentration Table
Note: Chemicals highlighted in orange are non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals.
Exposure Point
Minimum
Maximum
Location of
Range of
Concentration
Screening
Potential
Potential
Rationale for
Concentration
Justification for Exposure Point
CAS Number
Chemical
Concentration
Concentration
Units
Maximum
Detection
Detection
Used for
Background
Toxicity Value
ARAR/TBC
ARAR/TBC
COPC Flag
Selection or
3
(ug/m)
Concentration
(Qualifier)
(Qualifier)
Concentration
Frequency
Limits
Screening
Value
(Screening
Value
Source
(Y/N)
Deletion
Level) (n/c)
390
67-64-1
Acetone
ug/m3
230
71-43-2
Benzene
ug/m3
130
67-66-3
Chloroform
ug/m3
360
75-34-3
Dichloroethane, 1,1-
ug/m3
2900
75-35-4
Dichloroethylene, 1,1-
ug/m3
1300
100-41-4
Ethylbenzene
ug/m3
140
142-82-5
Heptane, N-
ug/m3
78
127-18-4
Tetrachloroethylene
ug/m3
3500
108-88-3
Toluene
ug/m3
10000
71-55-6
Trichloroethane, 1,1,1-
ug/m3
2800
95-63-6
Trimethylbenzene, 1,2,4-
ug/m3
1700
108-67-8
Trimethylbenzene, 1,3,5-
ug/m3
12800
1330-20-7
Xylenes
ug/m3
North Carolina DEQ Risk Calculator

Summary of Risk Assessment Output
Version Date: February 2018
Basis: November 2017 EPA RSL Table
Site ID: 21050-17-092
Exposure Unit ID: 1015A South Saunders Street- SSVP-4
PRIMARY CALCULATORS
Receptor
Pathway
Carcinogenic
Hazard Index
Risk exceeded?
Resident
Soil Combined Pathways
NC
NC
NC
Groundwater Combined Pathways*
NC
NC
NC
Non -Residential Worker
Soil Combined Pathways
NC
NC
NC
Groundwater Combined Pathways*
NC
NC
NC
Construction Worker
Soil Combined Pathways
NC
NC
NC
User Defined
Soil Combined Pathways
NC
NC
NC
Surface Water Combined Pathways*
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
9.2E-05
6.7E+00
YES
Indoor Air
NC
NC
NC
Non -Residential Worker
Groundwater to Indoor Air
NC
NC
NC
Soil Gas to Indoor Air
7.0E-06
5.3E-01
NO
Indoor Air
NC
NC
NC
CONTAMINANT MIGRATION CALCULATORS
Pathway
Source
Target POE Concentrations Exceeded?
Protection of Groundwater Use
Source Soil
Exceedence of 2L at POE?
NC
Source Groundwater
Exceedence of 2L at POE?
NC
Protection of Surface Water
Source Soil
Exceedence of 2B at POE?
NC
Source Groundwater
Exceedence of 213 at POE?
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 213 Standards, appropriate remediation and/or institutional control measures will be necessary to be eligible for a
risk -based closure.
North Carolina DEQ Risk Calculator

DEQ Risk Calculator - Vapor Intrusion - Resident Soil Gas to Indoor Air 1
Version Date: February 2018
Basis: November 2017 EPA RSL Table
Site ID: 21050-17-092
IExnosure Unit ID: 1015A South Saunders Street- SSVP-4
Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion
risk, no risk values are calculated for these chemicals.
All concentrations are in u m3
CAS #
Chemical Name:
Soil Gas
Concentration
3
(ug/m)
Calculated
Indoor Air
Concentration
(ug/ms)
Target Indoor
Air Conc. for
Carcinogens @
TCR = 1 E-06
Target Indoor Air
Conc. for Non -
Carcinogens @
THQ = 0.2
Calculated
Carcinogenic
Risk
Calculated
Non -
Carcinogenic
Hazard
Quotient
67-64-1
Acetone
390
11.7
-
6.5E+03
3.6E-04
71-43-2
Benzene
230
6.9
3.6E-01
6.3E+00
1.9E-05
2.2E-01
67-66-3
Chloroform
130
3.9
1.2E-01
2.0E+01
3.2E-05
3.8E-02
75-34-3
Dichloroethane, 1,1-
360
10.8
1.8E+00
-
6.2E-06
75-35-4
Dichloroethylene, 1,1-
2900
87
-
4.2E+01
4.2E-01
100-41-4
Ethylbenzene
1300
39
1.1E+00
2.1E+02
3.5E-05
3.7E-02
142-82-5
Heptane, N-
140
4.2
-
8.3E+01
1.0E-02
127-18-4
Tetrachloroethylene
78
2.34
1.1E+01
8.3E+00
2.2E-07
5.6E-02
108-88-3
Toluene
3500
105
-
1.0E+03
2.0E-02
71-55-6
Trichloroethane, 1,1,1-
10000
300
-
1.0E+03
5.8E-02
95-63-6
Trimethylbenzene, 1,2,4-
2800
84
-
1.3E+01
1.3E+00
108-67-8
Trimethylbenzene, 1,3,5-
1700
51
-
1.3E+01
8.2E-01
1330-20-7
Xylenes
12800
384
-
2.1E+01
3.7E+00
Cumulative: I 9.2E-05 I 6.7E+00
North Carolina DEQ Risk Calculator

DEQ Risk Calculator - Vapor Intrusion - Non -Residential Worker Soil Gas to Indoor Air
Version Date: February 2018
: November 2017 EPA RSL Table
Site ID: 21050-17-092
Unit ID: 1015A South Saunders Street- SSVP-4
Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion
risk, no risk values are calculated for these chemicals.
All concentrations are in u /m3
CAS #
Chemical Name:
Soil Gas
Concentration
3
(ug/m)
Calculated
Indoor Air
Concentration
(ug/m3)
Target Indoor
Air Conc. for
Carcinogens @
TCR = 1 E-06
Target Indoor Air
Conc. for Non -
Carcinogens @
THQ = 0.2
Calculated
Carcinogenic
Risk
Calculated
Non -
Carcinogenic
Hazard
Quotient
67-64-1
Acetone
390
3.9
-
2.7E+04
2.9E-05
71-43-2
Benzene
230
2.3
1.6E+00
2.6E+01
1.5E-06
1.8E-02
67-66-3
Chloroform
130
1.3
5.3E-01
8.6E+01
2.4E-06
3.0E-03
75-34-3
Dichloroethane, 1,1-
360
3.6
7.7E+00
-
4.7E-07
75-35-4
Dichloroethylene, 1,1-
2900
29
-
1.8E+02
3.3E-02
100-41-4
Eth lbenzene
1300
13
4.9E+00
8.8E+02
2.7E-06
3.0E-03
142-82-5
Heptane, N-
140
1.4
-
3.5E+02
8.0E-04
127-18-4
Tetrachloroethylene
78
0.78
4.7E+01
3.5E+01
1.7E-08
4.5E-03
108-88-3
Toluene
3500
35
-
4.4E+03
1.6E-03
71-55-6
Trichloroethane, 1,1,1-
10000
100
-
4.4E+03
4.6E-03
95-63-6
Trimethylbenzene, 1,2,4-
2800
28
-
5.3E+01
1.1E-01
108-67-8
Trimeth lbenzene, 1,3,5-
1700
17
-
5.3E+01
6.5E-02
1330-20-7
Xylenes
12800
128
-
8.8E+01
2.9E-01
Cumulative: 1 7.0E-06 1 5.3E-01
North Carolina DEQ Risk Calculator

North Carolina Department of Environmental Quality
Risk Calculator
Version Date:
February 2018
Basis:
November 2017 EPA RSL Table
Site Name:
South Saunders Street Assemblage
Site Address:
South Saunders Street, Raleigh, North Carolina
DEQ Section:
Brownfields Program
Site ID:
21050-17-092
Exposure Unit ID:
1015A South Saunders Street- SSVP-4 Duplicate
Submittal Date:
Prepared By:
Hart & Hickman, PC
Reviewed By:
Justin Ballard
North Carolina DEQ Risk Calculator

Table of Contents
Version Date: February 2018
Basis: November 2017 EPA RSL Table
Site ID: 21050-17-092
Exposure Unit ID:
1015A South Saunders Street- SSVP-4 Duplicate
Form No.
Description
Check box
if included
DATA INPUT SHEETS
Input Section 1 - Exposure Pathways & Parameters
Input Form lA
Complete Exposure Pathways
El
Input Form I
Input Form 1 C
Exposure Factors and Target Risks
Contaminant Migration Parameters
❑
❑
Input Form I
Sample Statistics
❑
Input Section 2 - Exposure Point Concentrations
Input Form 2A
Surface Soil Exposure Point Concentration Table
❑
Input Form 2B
Subsurface Soil Exposure Point Concentration Table
❑
Input Form 2C
Groundwater Exposure Point Concentration Table
❑
Input Form 2D
Surface Water Exposure Point Concentration Table
❑
Input Form 2E
Input Form 2F
Soil Gas Exposure Point Concentration Table
Indoor Air Exposure Point Concentration Table
0
❑
DATA OUTPUT SHEETS
Output Section 1 - Summary Output for All Calculators
Output Form IA
Summary of Risk Assessment Output
0
Output Section 2 - Primary Calculators
Output Form 2A
Resident Soil Combined Pathways
❑
Output Form 2B
Resident Groundwater Combined Pathways
❑
Output Form 2C
Non -Residential Worker Soil Combined Pathways
❑
Output Form 2D
Non -Residential Worker Groundwater Combined Pathways
❑
Output Form 2E
Construction Worker Soil Combined Pathways
❑
Output Form 2F
User Defined Soil Combined Pathways
❑
Output Form 2G
User Defined Surface Water Combined Pathways
❑
Output Section 3 - Vapor Intrusion Calculators
Output Form 3A
Resident Groundwater to Indoor Air
❑
Output Form 3B
Resident Soil Gas to Indoor Air
0
Output Form 3C
Resident Indoor Air
❑
Output Form 3D
Non -Residential Worker Groundwater to Indoor Air
❑
Output Form 3E
Non -Residential Worker Soil Gas to Indoor Air
0
Output Form 3F
Non -Residential Worker Indoor Air
❑
Output Section 4 - Contaminant Migration to Point of Exposure (POE) Worksheets
Output Form 4A
Soil Source to Groundwater POE - Forward Mode
❑
Output Form 4B
Groundwater Source to Groundwater POE - Forward Mode
❑
Output Form 4C
Soil Source to Surface Water POE - Forward Mode
❑
Output Form 4D
Groundwater Source to Surface Water POE - Forward Mode
❑
Output Form 4E
Soil Source to Groundwater POE - Backward Mode
❑
Output Form 4F
Groundwater Source to Groundwater POE - Backward Mode
❑
Output Form 4G
Soil Source to Surface Water POE - Backward Mode
❑
Output Form 4H
Groundwater Source to Surface Water POE - Backward Mode
❑
North Carolina DEQ Risk Calculator

Complete Exposure Pathways
Version Date: February 2018
Basis: November 2017 EPA RSL Table
Site ID: 21050-17-092
Exposure Unit ID: 1015A South Saunders Street- SSVP-4 Duplicate
Note: Risk output will only be calculated for complete exposure pathways.
Receptor
Pathway
Check box if
pathway
complete
PRIMARY PATHWAYS
Resident
Soil Combined Pathways
[ ]
Groundwater Combined Pathways
Ll
Non -Residential Worker
Soil Combined Pathways
❑
Groundwater Combined Pathways
❑
Construction Worker
Soil Combined Pathways
❑
User Defined
Soil Combined Pathways
❑
Surface Water Combined Pathways
❑
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
0
Indoor Air
❑
CONTAMINANT MIGRATION PATHWAYS
Protection of Groundwater Use
Source Soil
❑
Source Groundwater
❑
Protection of Surface Water
Source Soil
❑
Source Groundwater
❑
North Carolina DEQ Risk Calculator

xposure Point Concentrations
ersion Date: February 2018
November 2017 EPA RSL Table
ID: 21050-17-092
Unit ID: 1015A South Saunders Street- SSVP-4
Soil Gas Exposure Point Concentration Table
Note: Chemicals highlighted in orange are non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals.
Exposure Point
Minimum
Maximum
Location of
Range of
Concentration
Screening
Potential
Potential
Rationale for
Concentration
Justification for Exposure Point
CAS Number
Chemical
Concentration
Concentration
Units
Maximum
Detection
Detection
Used for
Background
Toxicity Value
ARAR/TBC
ARAR/TBC
COPC Flag
Selection or
3
(ug/m)
Concentration
(Qualifier)
(Qualifier)
Concentration
Frequency
Limits
Screening
Value
(Screening
Value
Source
(Y/N)
Deletion
Level) (n/c)
490
67-64-1
Acetone
ug/m3
190
71-43-2
Benzene
ug/m3
320
75-34-3
Dichloroethane, 1,1-
ug/m3
2600
75-35-4
Dichloroethylene, 1,1-
ug/m3
1100
100-41-4
Ethylbenzene
ug/m3
110
142-82-5
Heptane, N-
ug/m3
87
127-18-4
Tetrachloroethylene
ug/m3
3000
108-88-3
Toluene
ug/m3
8700
71-55-6
Trichloroethane, 1,1,1-
ug/m3
32
79-01-6
Trichloroethylene
ug/m3
2400
95-63-6
Trimethylbenzene, 1,2,4-
ug/m3
1400
1 108-67-8
1 Trimethylbenzene, 1,3,5-
ug/m3
10900
1 1330-20-7
1 Xylenes
ug/m3
North Carolina DEQ Risk Calculator

Summary of Risk Assessment Output
Version Date: February 2018
Basis: November 2017 EPA RSL Table
Site ID: 21050-17-092
Exposure Unit ID: 1015A South Saunders Street- SSVP-4 Duplicate
PRIMARY CALCULATORS
Receptor
Pathway
Carcinogenic
Hazard Index
Risk exceeded?
Resident
Soil Combined Pathways
NC
NC
NC
Groundwater Combined Pathways*
NC
NC
NC
Non -Residential Worker
Soil Combined Pathways
NC
NC
NC
Groundwater Combined Pathways*
NC
NC
NC
Construction Worker
Soil Combined Pathways
NC
NC
NC
User Defined
Soil Combined Pathways
NC
NC
NC
Surface Water Combined Pathways*
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
5.3E-05
6.1E+00
YES
Indoor Air
NC
NC
NC
Non -Residential Worker
Groundwater to Indoor Air
NC
NC
NC
Soil Gas to Indoor Air
4.0E-06
4.9E-01
NO
Indoor Air
NC
NC
NC
CONTAMINANT MIGRATION CALCULATORS
Pathway
Source
Target POE Concentrations Exceeded?
Protection of Groundwater Use
Source Soil
Exceedence of 2L at POE?
NC
Source Groundwater
Exceedence of 2L at POE?
NC
Protection of Surface Water
Source Soil
Exceedence of 2B at POE?
NC
Source Groundwater
Exceedence of 213 at POE?
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 213 Standards, appropriate remediation and/or institutional control measures will be necessary to be eligible for a
risk -based closure.
North Carolina DEQ Risk Calculator

DEQ Risk Calculator - Vapor Intrusion - Resident Soil Gas to Indoor Air 1
Version Date: February 2018
Basis: November 2017 EPA RSL Table
Site ID: 21050-17-092
IExnosure Unit ID: 1015A South Saunders Street- SSVP-4 DUDlicate
Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion
risk, no risk values are calculated for these chemicals.
All concentrations are in u m3
CAS #
Chemical Name:
Soil Gas
Concentration
3
(ug/m)
Calculated
Indoor Air
Concentration
(ug/ms)
Target Indoor
Air Conc. for
Carcinogens @
TCR = 1 E-06
Target Indoor Air
Conc. for Non -
Carcinogens @
THQ = 0.2
Calculated
Carcinogenic
Risk
Calculated
Non -
Carcinogenic
Hazard
Quotient
67-64-1
Acetone
490
14.7
-
6.5E+03
4.5E-04
71-43-2
Benzene
190
5.7
3.6E-01
6.3E+00
1.6E-05
1.8E-01
75-34-3
Dichloroethane, 1,1-
320
9.6
1.8E+00
-
5.5E-06
75-35-4
Dichloroethylene, 1,1-
2600
78
-
4.2E+01
3.7E-01
100-41-4
Ethylbenzene
1100
33
1.1E+00
2.1 E+02
2.9E-05
3.2E-02
142-82-5
Heptane, N-
110
3.3
-
8.3E+01
7.9E-03
127-18-4
Tetrachloroethylene
87
2.61
1.1E+01
8.3E+00
2.4E-07
6.3E-02
108-88-3
Toluene
3000
90
-
1.0E+03
1.7E-02
71-55-6
Trichloroethane, 1,1,1-
8700
261
-
1.0E+03
5.0E-02
79-01-6
Trichloroethylene
32
0.96
4.8E-01
4.2E-01
2.0E-06
4.6E-01
95-63-6
Trimethylbenzene, 1,2,4-
2400
72
-
1.3E+01
1.2E+00
108-67-8
Trimethylbenzene, 1,3,5-
1400
42
-
1.3E+01
6.7E-01
1330-20-7
Xylenes
10900
327
-
2.1E+01
3.1E+00
Cumulative: I 5.3E-05 I 6.1E+00
North Carolina DEQ Risk Calculator

DEQ Risk Calculator - Vapor Intrusion - Non -Residential Worker Soil Gas to Indoor Air
Version Date: February 2018
: November 2017 EPA RSL Table
Site ID: 21050-17-092
Unit ID: 1015A South Saunders Street- SSVP-4 Du
Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion
risk, no risk values are calculated for these chemicals.
All concentrations are in u /m3
CAS #
Chemical Name:
Soil Gas
Concentration
3
(ug/m)
Calculated
Indoor Air
Concentration
(ug/m3)
Target Indoor
Air Conc. for
Carcinogens @
TCR = 1 E-06
Target Indoor Air
Conc. for Non -
Carcinogens @
THQ = 0.2
Calculated
Carcinogenic
Risk
Calculated
Non -
Carcinogenic
Hazard
Quotient
67-64-1
Acetone
490
4.9
-
2.7E+04
3.6E-05
71-43-2
Benzene
190
1.9
1.6E+00
2.6E+01
1.2E-06
1.4E-02
75-34-3
Dichloroethane, 1,1-
320
3.2
7.7E+00
-
4.2E-07
75-35-4
Dichloroethylene, 1,1-
2600
26
-
1.8E+02
3.0E-02
100-41-4
Ethylbenzene
1100
11
4.9E+00
8.8E+02
2.2E-06
2.5E-03
142-82-5
He tane, N-
110
1.1
-
3.5E+02
6.3E-04
127-18-4
Tetrachloroethylene
87
0.87
4.7E+01
3.5E+01
1.8E-08
5.0E-03
108-88-3
Toluene
3000
30
-
4.4E+03
1.4E-03
71-55-6
Trichloroethane, 1,1,1-
8700
87
-
4.4E+03
4.0E-03
79-01-6
Trichloroethylene
32
0.32
3.0E+00
1.8E+00
1.1E-07
3.7E-02
95-63-6
Trimethylbenzene, 1,2,4-
2400
24
-
5.3E+01
9.1E-02
108-67-8
Trimeth lbenzene, 1,3,5-
1400
14
-
5.3E+01
5.3E-02
1330-20-7
Xylenes
10900
109
-
8.8E+01
2.5E-01
Cumulative: 1 4.0E-06 1 4.9E-01
North Carolina DEQ Risk Calculator

North Carolina Department of Environmental Quality
Risk Calculator
Version Date:
February 2018
Basis:
November 2017 EPA RSL Table
Site Name:
South Saunders Street Assemblage
Site Address:
South Saunders Street, Raleigh, North Carolina
DEQ Section:
Brownfields Program
Site ID:
21050-17-092
Exposure Unit ID:
1015B South Saunders Street- SSVP-5
Submittal Date:
Prepared By:
Hart & Hickman, PC
Reviewed By:
Justin Ballard
North Carolina DEQ Risk Calculator

Table of Contents
Version Date: February 2018
Basis: November 2017 EPA RSL Table
Site ID: 21050-17-092
Exposure Unit ID:
1015B South Saunders Street- SSVP-5
Form No.
Description
Check box
if included
DATA INPUT SHEETS
Input Section 1 - Exposure Pathways & Parameters
Input Form lA
Complete Exposure Pathways
El
Input Form I
Input Form 1 C
Exposure Factors and Target Risks
Contaminant Migration Parameters
❑
❑
Input Form I
Sample Statistics
❑
Input Section 2 - Exposure Point Concentrations
Input Form 2A
Surface Soil Exposure Point Concentration Table
❑
Input Form 2B
Subsurface Soil Exposure Point Concentration Table
❑
Input Form 2C
Groundwater Exposure Point Concentration Table
❑
Input Form 2D
Surface Water Exposure Point Concentration Table
❑
Input Form 2E
Input Form 2F
Soil Gas Exposure Point Concentration Table
Indoor Air Exposure Point Concentration Table
0
❑
DATA OUTPUT SHEETS
Output Section 1 - Summary Output for All Calculators
Output Form IA
Summary of Risk Assessment Output
0
Output Section 2 - Primary Calculators
Output Form 2A
Resident Soil Combined Pathways
❑
Output Form 2B
Resident Groundwater Combined Pathways
❑
Output Form 2C
Non -Residential Worker Soil Combined Pathways
❑
Output Form 2D
Non -Residential Worker Groundwater Combined Pathways
❑
Output Form 2E
Construction Worker Soil Combined Pathways
❑
Output Form 2F
User Defined Soil Combined Pathways
❑
Output Form 2G
User Defined Surface Water Combined Pathways
❑
Output Section 3 - Vapor Intrusion Calculators
Output Form 3A
Resident Groundwater to Indoor Air
❑
Output Form 3B
Resident Soil Gas to Indoor Air
0
Output Form 3C
Resident Indoor Air
❑
Output Form 3D
Non -Residential Worker Groundwater to Indoor Air
❑
Output Form 3E
Non -Residential Worker Soil Gas to Indoor Air
0
Output Form 3F
Non -Residential Worker Indoor Air
❑
Output Section 4 - Contaminant Migration to Point of Exposure (POE) Worksheets
Output Form 4A
Soil Source to Groundwater POE - Forward Mode
❑
Output Form 4B
Groundwater Source to Groundwater POE - Forward Mode
❑
Output Form 4C
Soil Source to Surface Water POE - Forward Mode
❑
Output Form 4D
Groundwater Source to Surface Water POE - Forward Mode
❑
Output Form 4E
Soil Source to Groundwater POE - Backward Mode
❑
Output Form 4F
Groundwater Source to Groundwater POE - Backward Mode
❑
Output Form 4G
Soil Source to Surface Water POE - Backward Mode
❑
Output Form 4H
Groundwater Source to Surface Water POE - Backward Mode
❑
North Carolina DEQ Risk Calculator

Complete Exposure Pathways
Version Date: February 2018
Basis: November 2017 EPA RSL Table
Site ID: 21050-17-092
Exposure Unit ID: 1015B South Saunders Street- SSVP-5
Note: Risk output will only be calculated for complete exposure pathways.
Receptor
Pathway
Check box if
pathway
complete
PRIMARY PATHWAYS
Resident
Soil Combined Pathways
[ ]
Groundwater Combined Pathways
Ll
Non -Residential Worker
Soil Combined Pathways
❑
Groundwater Combined Pathways
❑
Construction Worker
Soil Combined Pathways
❑
User Defined
Soil Combined Pathways
❑
Surface Water Combined Pathways
❑
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
0
Indoor Air
❑
CONTAMINANT MIGRATION PATHWAYS
Protection of Groundwater Use
Source Soil
❑
Source Groundwater
❑
Protection of Surface Water
Source Soil
❑
Source Groundwater
❑
North Carolina DEQ Risk Calculator

xposure Point Concentrations
ersion Date: February 2018
November 2017 EPA RSL Table
ID: 21050-17-092
Unit ID: 1015B South Saunders Street- SSVP-5
Soil Gas Exposure Point Concentration Table
Note: Chemicals highlighted in orange are non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals.
Exposure Point
Minimum
Maximum
Location of
Range of
Concentration
Screening
Potential
Potential
Rationale for
Concentration
Justification for Exposure Point
CAS Number
Chemical
Concentration
Concentration
Units
Maximum
Detection
Detection
Used for
Background
Toxicity Value
ARAR/TBC
ARAR/TBC
COPC Flag
Selection or
3
(ug/m)
Concentration
(Qualifier)
(Qualifier)
Concentration
Frequency
Limits
Screening
Value
(Screening
Value
Source
(Y/N)
Deletion
Level) (n/c)
160
67-64-1
Acetone
ug/m3
1.7
71-43-2
Benzene
ug/m3
17
56-23-5
Carbon Tetrachloride
ug/m3
21
75-35-4
Dichloroethylene, 1,1-
ug/m3
8.5
100-41-4
Ethylbenzene
ug/m3
35
67-63-0
Isopropanol
ug/m3
7.5
78-93-3
Methyl Ethyl Ketone (2-Butanone)
ug/m3
1.6
100-42-5
Styrene
ug/m3
160
127-18-4
Tetrachloroethylene
ug/m3
30
108-88-3
Toluene
ug/m3
110
71-55-6
Trichloroethane, 1,1,1-
ug/m3
5.1
79-01-6
Trichloroethylene
ug/m3
1.1
75-69-4
Trichlorofluoromethane
ug/m3
17
95-63-6
Trimethylbenzene, 1,2,4-
ug/m3
9.2
1 108-67-8
Trimethylbenzene, 1,3,5-
ug/m3
76
1 1330-20-7
Xylenes
ug/m3
North Carolina DEQ Risk Calculator

Summary of Risk Assessment Output
Version Date: February 2018
Basis: November 2017 EPA RSL Table
Site ID: 21050-17-092
Exposure Unit ID: 1015B South Saunders Street- SSVP-5
PRIMARY CALCULATORS
Receptor
Pathway
Carcinogenic
Hazard Index
Risk exceeded?
Resident
Soil Combined Pathways
NC
NC
NC
Groundwater Combined Pathways*
NC
NC
NC
Non -Residential Worker
Soil Combined Pathways
NC
NC
NC
Groundwater Combined Pathways*
NC
NC
NC
Construction Worker
Soil Combined Pathways
NC
NC
NC
User Defined
Soil Combined Pathways
NC
NC
NC
Surface Water Combined Pathways*
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
2.2E-06
2.4E-01
NO
Indoor Air
NC
NC
NC
Non -Residential Worker
Groundwater to Indoor Air
NC
NC
NC
Soil Gas to Indoor Air
1.6E-07
1.9E-02
NO
Indoor Air
NC
NC
NC
CONTAMINANT MIGRATION CALCULATORS
Pathway
Source
Target POE Concentrations Exceeded?
Protection of Groundwater Use
Source Soil
Exceedence of 2L at POE?
NC
Source Groundwater
Exceedence of 2L at POE?
NC
Protection of Surface Water
Source Soil
Exceedence of 2B at POE?
NC
Source Groundwater
Exceedence of 213 at POE?
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 213 Standards, appropriate remediation and/or institutional control measures will be necessary to be eligible for a
risk -based closure.
North Carolina DEQ Risk Calculator

DEQ Risk Calculator - Vapor Intrusion - Resident Soil Gas to Indoor Air 1
Version Date: February 2018
Basis: November 2017 EPA RSL Table
Site ID: 21050-17-092
IExnosure Unit ID: 1015B South Saunders Street- SSVP-5
Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion
risk, no risk values are calculated for these chemicals.
All concentrations are in u m3
CAS #
Chemical Name:
Soil Gas
Concentration
3
(ug/m)
Calculated
Indoor Air
Concentration
(ug/ms)
Target Indoor
Air Conc. for
Carcinogens @
TCR = 1 E-06
Target Indoor Air
Conc. for Non -
Carcinogens @
THQ = 0.2
Calculated
Carcinogenic
Risk
Calculated
Non -
Carcinogenic
Hazard
Quotient
67-64-1
Acetone
160
4.8
-
6.5E+03
1.5E-04
71-43-2
Benzene
1.7
0.051
3.6E-01
6.3E+00
1.4E-07
1.6E-03
56-23-5
Carbon Tetrachloride
17
0.51
4.7E-01
2.1E+01
1.1E-06
4.9E-03
75-35-4
Dichloroethylene, 1,1-
21
0.63
-
4.2E+01
3.0E-03
100-41-4
Ethylbenzene
8.5
0.255
1.1E+00
2.1E+02
2.3E-07
2.4E-04
67-63-0
Isopropanol
35
1.05
-
4.2E+01
5.0E-03
78-93-3
Methyl Ethyl Ketone (2-Butanone)
7.5
0.225
-
1.0E+03
4.3E-05
100-42-5
Styrene
1.6
0.048
-
2.1E+02
4.6E-05
127-18-4
Tetrachloroethylene
160
4.8
1.1E+01
8.3E+00
4.4E-07
1.2E-01
108-88-3
Toluene
30
0.9
-
1.0E+03
1.7E-04
71-55-6
Trichloroethane, 1,1,1-
110
3.3
-
1.0E+03
6.3E-04
79-01-6
Trichloroethylene
5.1
0.153
4.8E-01
4.2E-01
3.2E-07
7.3E-02
75-69-4
Trichlorofluoromethane
1.1
0.033
-
-
95-63-6
Trimethylbenzene, 1,2,4-
17
0.51
-
1.3E+01
8.2E-03
108-67-8
Trimethylbenzene, 1,3,5-
9.2
0.276
-
1.3E+01
4.4E-03
1330-20-7
Xylenes
76
2.28
-
2.1E+01
2.2E-02
Cumulative: I 2.2E-06 I 2.4E-01
North Carolina DEQ Risk Calculator

DEQ Risk Calculator - Vapor Intrusion - Non -Residential Worker Soil Gas to Indoor Air
Version Date: February 2018
: November 2017 EPA RSL Table
Site ID: 21050-17-092
Unit ID: 1015B South Saunders Street- SSVP-5
Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion
risk, no risk values are calculated for these chemicals.
All concentrations are in u /m3
CAS #
Chemical Name:
Soil Gas
Concentration
3
(ug/m)
Calculated
Indoor Air
Concentration
(ug/m3)
Target Indoor
Air Conc. for
Carcinogens @
TCR = 1 E-06
Target Indoor Air
Conc. for Non -
Carcinogens @
THQ = 0.2
Calculated
Carcinogenic
Risk
Calculated
Non -
Carcinogenic
Hazard
Quotient
67-64-1
Acetone
160
1.6
-
2.7E+04
1.2E-05
71-43-2
Benzene
1.7
0.017
1.6E+00
2.6E+01
1.1E-08
1.3E-04
56-23-5
Carbon Tetrachloride
17
0.17
2.0E+00
8.8E+01
8.3E-08
3.9E-04
75-35-4
Dichloroethylene, 1,1-
21
0.21
-
1.8E+02
2.4E-04
100-41-4
Ethylbenzene
8.5
0.085
4.9E+00
8.8E+02
1.7E-08
1.9E-05
67-63-0
Iso ro anol
35
0.35
-
1.8E+02
4.0E-04
78-93-3
Methyl Ethyl Ketone (2-Butanone)
7.5
0.075
-
4.4E+03
3.4E-06
100-42-5
Styrene
1.6
0.016
-
8.8E+02
3.7E-06
127-18-4
Tetrachloroethylene
160
1.6
4.7E+01
3.5E+01
3.4E-08
9.1E-03
108-88-3
Toluene
30
0.3
-
4.4E+03
1.4E-05
71-55-6
Trichloroethane, 1,1,1-
110
1.1
-
4.4E+03
5.0E-05
79-01-6
Trichloroethylene
5.1
0.051
3.0E+00
1.8E+00
1.7E-08
5.8E-03
75-69-4
Trichlorofluoromethane
1.1
0.011
-
-
95-63-6
Trimethylbenzene, 1,2,4-
17
0.17
-
5.3E+01
6.5E-04
108-67-8
Trimethylbenzene, 1,3,5-
9.2
0.092
-
5.3E+01
3.5E-04
1330-20-7
Xylenes
76
0.76
-
8.8E+01
1.7E-03
Cumulative: I 1.6E-07 I 1.9E-02
North Carolina DEQ Risk Calculator

North Carolina Department of Environmental Quality
Risk Calculator
Version Date:
February 2018
Basis:
November 2017 EPA RSL Table
Site Name:
South Saunders Street Assemblage
Site Address:
South Saunders Street, Raleigh, North Carolina
DEQ Section:
Brownfields Program
Site ID:
21050-17-092
Exposure Unit ID:
1015B South Saunders Street- SSVP-6
Submittal Date:
Prepared By:
Hart & Hickman, PC
Reviewed By:
Justin Ballard
North Carolina DEQ Risk Calculator

Table of Contents
Version Date: February 2018
Basis: November 2017 EPA RSL Table
Site ID: 21050-17-092
Exposure Unit ID:
1015B South Saunders Street- SSVP-6
Form No.
Description
Check box
if included
DATA INPUT SHEETS
Input Section 1 - Exposure Pathways & Parameters
Input Form lA
Complete Exposure Pathways
El
Input Form I
Input Form 1 C
Exposure Factors and Target Risks
Contaminant Migration Parameters
❑
❑
Input Form I
Sample Statistics
❑
Input Section 2 - Exposure Point Concentrations
Input Form 2A
Surface Soil Exposure Point Concentration Table
❑
Input Form 2B
Subsurface Soil Exposure Point Concentration Table
❑
Input Form 2C
Groundwater Exposure Point Concentration Table
❑
Input Form 2D
Surface Water Exposure Point Concentration Table
❑
Input Form 2E
Input Form 2F
Soil Gas Exposure Point Concentration Table
Indoor Air Exposure Point Concentration Table
0
❑
DATA OUTPUT SHEETS
Output Section 1 - Summary Output for All Calculators
Output Form IA
Summary of Risk Assessment Output
0
Output Section 2 - Primary Calculators
Output Form 2A
Resident Soil Combined Pathways
❑
Output Form 2B
Resident Groundwater Combined Pathways
❑
Output Form 2C
Non -Residential Worker Soil Combined Pathways
❑
Output Form 2D
Non -Residential Worker Groundwater Combined Pathways
❑
Output Form 2E
Construction Worker Soil Combined Pathways
❑
Output Form 2F
User Defined Soil Combined Pathways
❑
Output Form 2G
User Defined Surface Water Combined Pathways
❑
Output Section 3 - Vapor Intrusion Calculators
Output Form 3A
Resident Groundwater to Indoor Air
❑
Output Form 3B
Resident Soil Gas to Indoor Air
0
Output Form 3C
Resident Indoor Air
❑
Output Form 3D
Non -Residential Worker Groundwater to Indoor Air
❑
Output Form 3E
Non -Residential Worker Soil Gas to Indoor Air
0
Output Form 3F
Non -Residential Worker Indoor Air
❑
Output Section 4 - Contaminant Migration to Point of Exposure (POE) Worksheets
Output Form 4A
Soil Source to Groundwater POE - Forward Mode
❑
Output Form 4B
Groundwater Source to Groundwater POE - Forward Mode
❑
Output Form 4C
Soil Source to Surface Water POE - Forward Mode
❑
Output Form 4D
Groundwater Source to Surface Water POE - Forward Mode
❑
Output Form 4E
Soil Source to Groundwater POE - Backward Mode
❑
Output Form 4F
Groundwater Source to Groundwater POE - Backward Mode
❑
Output Form 4G
Soil Source to Surface Water POE - Backward Mode
❑
Output Form 4H
Groundwater Source to Surface Water POE - Backward Mode
❑
North Carolina DEQ Risk Calculator

Complete Exposure Pathways
Version Date: February 2018
Basis: November 2017 EPA RSL Table
Site ID: 21050-17-092
Exposure Unit ID: 1015B South Saunders Street- SSVP-6
Note: Risk output will only be calculated for complete exposure pathways.
Receptor
Pathway
Check box if
pathway
complete
PRIMARY PATHWAYS
Resident
Soil Combined Pathways
[ ]
Groundwater Combined Pathways
Ll
Non -Residential Worker
Soil Combined Pathways
❑
Groundwater Combined Pathways
❑
Construction Worker
Soil Combined Pathways
❑
User Defined
Soil Combined Pathways
❑
Surface Water Combined Pathways
❑
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
0
Indoor Air
❑
CONTAMINANT MIGRATION PATHWAYS
Protection of Groundwater Use
Source Soil
❑
Source Groundwater
❑
Protection of Surface Water
Source Soil
❑
Source Groundwater
❑
North Carolina DEQ Risk Calculator

xposure Point Concentrations
ersion Date: February 2018
November 2017 EPA RSL Table
ID: 21050-17-092
Unit ID: 1015B South Saunders Street- SSVP-6
Soil Gas Exposure Point Concentration Table
Note: Chemicals highlighted in orange are non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals.
Exposure Point
Minimum
Maximum
Location of
Range of
Concentration
Screening
Potential
Potential
Rationale for
Concentration
Justification for Exposure Point
CAS Number
Chemical
Concentration
Concentration
Units
Maximum
Detection
Detection
Used for
Background
Toxicity Value
ARAR/TBC
ARAR/TBC
COPC Flag
Selection or
3
(ug/m)
Concentration
(Qualifier)
(Qualifier)
Concentration
Frequency
Limits
Screening
Value
(Screening
Value
Source
(Y/N)
Deletion
Level) (n/c)
3000
67-64-1
Acetone
ug/m3
3.1
71-43-2
Benzene
ug/m3
10
100-41-4
Ethylbenzene
ug/m3
10
142-82-5
Heptane, N-
ug/m3
14
591-78-6
Hexanone, 2-
ug/m3
200
67-63-0
Isopropanol
ug/m3
81
78-93-3
Methyl Ethyl Ketone (2-Butanone)
ug/m3
19
108-10-1
Methyl Isobutyl Ketone (4-methyl-2-pentanone)
ug/m3
2.7
91-20-3
Naphthalene
ug/m3
340
127-18-4
Tetrachloroethylene
ug/m3
61
108-88-3
Toluene
ug/m3
140
71-55-6
Trichloroethane, 1,1,1-
ug/m3
1.3
75-69-4
Trichlorofluoromethane
ug/m3
21
95-63-6
Trimethylbenzene, 1,2,4-
ug/m3
5.9
1 108-67-8
Trimethylbenzene, 1,3,5-
ug/m3
65
1 1330-20-7
Xylenes
ug/m3
North Carolina DEQ Risk Calculator

Summary of Risk Assessment Output
Version Date: February 2018
Basis: November 2017 EPA RSL Table
Site ID: 21050-17-092
Exposure Unit ID: 1015B South Saunders Street- SSVP-6
PRIMARY CALCULATORS
Receptor
Pathway
Carcinogenic
Hazard Index
Risk exceeded?
Resident
Soil Combined Pathways
NC
NC
NC
Groundwater Combined Pathways*
NC
NC
NC
Non -Residential Worker
Soil Combined Pathways
NC
NC
NC
Groundwater Combined Pathways*
NC
NC
NC
Construction Worker
Soil Combined Pathways
NC
NC
NC
User Defined
Soil Combined Pathways
NC
NC
NC
Surface Water Combined Pathways*
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
2.5E-06
3.5E-01
NO
Indoor Air
NC
NC
NC
Non -Residential Worker
Groundwater to Indoor Air
NC
NC
NC
Soil Gas to Indoor Air
1.9E-07
2.8E-02
NO
Indoor Air
NC
NC
NC
CONTAMINANT MIGRATION CALCULATORS
Pathway
Source
Target POE Concentrations Exceeded?
Protection of Groundwater Use
Source Soil
Exceedence of 2L at POE?
NC
Source Groundwater
Exceedence of 2L at POE?
NC
Protection of Surface Water
Source Soil
Exceedence of 2B at POE?
NC
Source Groundwater
Exceedence of 213 at POE?
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 213 Standards, appropriate remediation and/or institutional control measures will be necessary to be eligible for a
risk -based closure.
North Carolina DEQ Risk Calculator

DEQ Risk Calculator - Vapor Intrusion - Resident Soil Gas to Indoor Air 1
Version Date: February 2018
Basis: November 2017 EPA RSL Table
Site ID: 21050-17-092
IExnosure Unit ID: 1015B South Saunders Street- SSVP-6
Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion
risk, no risk values are calculated for these chemicals.
All concentrations are in u m3
CAS #
Chemical Name:
Soil Gas
Concentration
3
(ug/m)
Calculated
Indoor Air
Concentration
(ug/ms)
Target Indoor
Air Conc. for
Carcinogens @
TCR = 1 E-06
Target Indoor Air
Conc. for Non -
Carcinogens @
THQ = 0.2
Calculated
Carcinogenic
Risk
Calculated
Non -
Carcinogenic
Hazard
Quotient
67-64-1
Acetone
3000
90
-
6.5E+03
2.8E-03
71-43-2
Benzene
3.1
0.093
3.6E-01
6.3E+00
2.6E-07
3.0E-03
100-41-4
Ethylbenzene
10
0.3
1.1E+00
2.1E+02
2.7E-07
2.9E-04
142-82-5
Heptane, N-
10
0.3
-
8.3E+01
7.2E-04
591-78-6
Hexanone, 2-
14
0.42
-
6.3E+00
1.3E-02
67-63-0
Isopropanol
200
6
-
4.2E+01
2.9E-02
78-93-3
Methyl Ethyl Ketone (2-Butanone)
81
2.43
-
1.0E+03
4.7E-04
108-10-1
Methyl Isobutyl Ketone (4-methyl-2-pentanone)
19
0.57
-
6.3E+02
1.8E-04
91-20-3
-Naphthalene
2.7
0.081
8.3E-02
6.3E-01
9.8E-07
2.6E-02
127-18-4
Tetrachloroethylene
340
10.2
1.1E+01
8.3E+00
9.4E-07
2.4E-01
108-88-3
Toluene
61
1.83
-
1.0E+03
3.5E-04
71-5 5-6
Trichloroethane, 1,1,1-
140
4.2
-
1.0E+03
8.1E-04
75-69-4
Trichlorofluoromethane
1.3
0.039
-
-
95-63-6
Trimethylbenzene, 1,2,4-
21
0.63
-
1.3E+01
1.0E-02
108-67-8
Trimethylbenzene, 1,3,5-
5.9
0.177
-
1.3E+01
2.8E-03
1330-20-7
Xylenes
65
1.95 4
-
2.1E+01
1.9E-02
Cumulative: I 2.5E-06 I 3.5E-01
North Carolina DEQ Risk Calculator

DEQ Risk Calculator - Vapor Intrusion - Non -Residential Worker Soil Gas to Indoor Air
Version Date: February 2018
: November 2017 EPA RSL Table
Site ID: 21050-17-092
Unit ID: 1015B South Saunders Street- SSVP-6
Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion
risk, no risk values are calculated for these chemicals.
All concentrations are in u /m3
CAS #
Chemical Name:
Soil Gas
Concentration
3
(ug/m)
Calculated
Indoor Air
Concentration
(ug/m3)
Target Indoor
Air Conc. for
Carcinogens @
TCR = 1 E-06
Target Indoor Air
Conc. for Non -
Carcinogens @
THQ = 0.2
Calculated
Carcinogenic
Risk
Calculated
Non -
Carcinogenic
Hazard
Quotient
67-64-1
Acetone
3000
30
-
2.7E+04
2.2E-04
71-43-2
Benzene
3.1
0.031
1.6E+00
2.6E+01
2.0E-08
2.4E-04
100-41-4
Ethylbenzene
10
0.1
4.9E+00
8.8E+02
2.0E-08
2.3E-05
142-82-5
Heptane, N-
10
0.1
-
3.5E+02
5.7E-05
591-78-6
Hexanone, 2-
14
0.14
-
2.6E+01
1.1E-03
67-63-0
Iso ro anol
200
2
-
1.8E+02
2.3E-03
78-93-3
Methyl Ethyl Ketone (2-Butanone)
81
0.81
-
4.4E+03
3.7E-05
108-10-1
Methyl Isobutyl Ketone (4-methyl-2-pentanone)
19
0.19
-
2.6E+03
1.4E-05
91-20-3
-Naphthalene
2.7
0.027
3.6E-01
2.6E+00
7.5E-08
2.1E-03
127-18-4
Tetrachloroethylene
340
3.4
4.7E+01
3.5E+01
7.2E-08
1.9E-02
108-88-3
Toluene
61
0.61
-
4.4E+03
2.8E-05
71-55-6
Trichloroethane, 1,1,1-
140
1.4
-
4.4E+03
6.4E-05
75-69-4
Trichlorofluoromethane
1.3
0.013
-
-
95-63-6
Trimethylbenzene, 1,2,4-
21
0.21
-
5.3E+01
8.0E-04
108-67-8
Trimethylbenzene, 1,3,5-
5.9
0.059
-
5.3E+01
2.2E-04
1330-20-7
Xylenes
65
0.65
-
8.8E+01
1.5E-03
Cumulative: I 1.9E-07 I 2.8E-02
North Carolina DEQ Risk Calculator