24054_AJACC Auto_Revised Post Const Soil Risk Calcs_20240403

Version Date:
Basis:
Site Name:
Site Address:
DEQ Section:
Site ID:
Exposure Unit ID:
Submittal Date:
Reviewed By:
3/13/2024
Prepared By:George Spain
Brian Olin
North Carolina Department of Environmental Quality
Risk Calculator
Verbena Street Assemblage - AJACC Auto
301 Verbena Street, Charlotte NC, 28203
Brownfields
AJACC Auto (NCBP #24054-20-060)
February 2024
November 2023 EPA RSL Table
North Carolina DEQ Risk Calculator
Table of Contents
Version Date: February 2024
Basis: November 2023 EPA RSL Table
Site ID: AJACC Auto (NCBP #24054-20-060)
Exposure Unit ID:
Form No.
Input Form 1A Complete Exposure Pathways
Input Form 1B Exposure Factors and Target Risks
Input Form 1C Contaminant Migration Parameters
Input Form 1D Sample Statistics
Input Form 2A Soil Exposure Point Concentration Table
Input Form 2B Groundwater Exposure Point Concentration Table
Input Form 2C Surface Water Exposure Point Concentration Table
Input Form 2D Soil Gas Exposure Point Concentration Table
Input Form 2E Indoor Air Exposure Point Concentration Table
Output Form 1A Risk for Individual Pathways
Output Form 1B Sitewide Risk
Output Form 2A Resident Soil
Output Form 2B Resident Groundwater Use
Output Form 2C Non-Residential Worker Soil
Output Form 2D Non-Residential Worker Groundwater Use
Output Form 2E Construction Worker Soil
Output Form 2F Recreator/Trespasser Soil
Output Form 2G Recreator/Trespasser Surface Water
Output Form 3A Resident Groundwater to Indoor Air
Output Form 3B Resident Soil Gas to Indoor Air
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
Output Form 3F Non-Residential Worker Indoor Air
Output Form 4A Soil to Groundwater - Forward Mode
Output Form 4B Groundwater to Groundwater - Forward Mode
Output Form 4C Soil to Surface Water - Forward Mode
Output Form 4D Groundwater to Surface Water - Forward Mode
Output Form 4E Soil to Groundwater - Backward Mode
Output Form 4F Groundwater to Groundwater - Backward Mode
Output Form 4G Soil to Surface Water - Backward Mode
Output Form 4H Groundwater to Surface Water - Backward Mode
Output Section 4 - Contaminant Migration Worksheets
Output Section 3 - Vapor Intrusion Calculators
Description
DATA INPUT SHEETS
Check box
if included
Input Section 1 - Exposure Pathways & Parameters
Input Section 2 - Exposure Point Concentrations
DATA OUTPUT SHEETS
Output Section 1 - Summary Output for All Calculators
Output Section 2 - Direct Contact Soil and Groundwater Calculators
North Carolina DEQ Risk Calculator
Complete Exposure Pathways
Version Date: February 2024
Basis: November 2023 EPA RSL Table
Site ID: AJACC Auto (NCBP #24054-20-060)
Exposure Unit ID:
Note: Risk output will only be calculated for complete exposure pathways.
Receptor Pathway
Check box if
pathway
complete
Soil
Groundwater Use
Soil
Groundwater Use
Construction Worker Soil
Soil
Surface Water
Groundwater to Indoor Air
Soil Gas to Indoor Air
Indoor Air
Groundwater to Indoor Air
Soil Gas to Indoor Air
Indoor Air
Source Soil
Source Groundwater
Source Soil
Source Groundwater
Input Form 1A
VAPOR INTRUSION PATHWAYS
DIRECT CONTACT SOIL AND WATER PATHWAYS
Resident
Non-Residential Worker
Recreator/Trespasser
Resident
Non-Residential Worker
CONTAMINANT MIGRATION PATHWAYS
Groundwater
Surface Water
North Carolina DEQ Risk Calculator
Exposure Point Concentrations
Version Date: February 2024
Basis: November 2023 EPA RSL Table
Site ID: AJACC Auto (NCBP #24054-20-060)
Exposure Unit ID:
NOTE: If the chemical list is changed from a prior calculator run, remember to select "See All Chemicals" on the data output sheet or newly added chemicals will not be included in risk calculations
Exposure Point
Concentration
(mg/kg)
Notes: CAS Number
Chemical
For the chemicals highlighted in blue, data entry notes are provided in the
PSRG Table link on the Main Menu
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
0.016 67-64-1 Acetone mg/kg PG-2 6 0.009-0.016
0.881 7440-38-2 Arsenic, Inorganic mg/kg PG-3 6 0.406-0.881
126 7440-39-3 Barium mg/kg PG-2 6 55.4-126
0.0931 7440-43-9 Cadmium (Diet)mg/kg PG-4 6 0.0433-0.0931
0.642 18540-29-9 Chromium(VI)mg/kg PG-3 6 0.219-0.642
13.6 7439-92-1 ~Lead and Compounds mg/kg PG-4 6 6.88-13.6
0.0501 7439-97-6 ~Mercury (elemental)mg/kg PG-2 5 0.158-0.0501
0.002 75-09-2 Methylene Chloride mg/kg PG-3, PG-4 2 0.002
0.182 56-55-3 ~Benz[a]anthracene PG-4 1 0.182
0.257 205-82-3 ~Benzo(j)fluoranthene mg/kg PG-4 1 0.257
0.214 50-32-8 ~Benzo[a]pyrene mg/kg PG-4 1 0.214
0.193 218-01-9 ~Chrysene mg/kg PG-4 1 0.193
0.307 206-44-0 ~Fluoranthene mg/kg PG-4 1 0.307
0.363 129-00-0 ~Pyrene mg/kg PG-4 1 0.363
0.14 7782-49-2 Selenium mg/kg PG-3 1 0.14
0.0489 7440-22-4 Silver mg/kg PG-1 6 0.0254-0.0489
0.0008 108-88-3 Toluene mg/kg PG-3 1 0.0008
Input Form 2A
Soil Exposure Point Concentration Table
Description of Exposure Point Concentration Selection:
North Carolina DEQ Risk Calculator
Risk for Individual Pathways Output Form 1A
Version Date: February 2024
Basis: November 2023 EPA RSL Table
Site ID: AJACC Auto (NCBP #24054-20-060)
Exposure Unit ID:
Receptor Pathway Carcinogenic
Risk Hazard Index Risk exceeded?
Soil 6.0E-06 6.6E-02 NO
Groundwater Use* NC NC NC
Soil 6.5E-07 5.5E-03 NO
Groundwater Use* NC NC NC
Construction Worker Soil 2.6E-07 6.3E-02 NO
Soil 3.4E-06 3.5E-02 NO
Surface Water* NC NC NC
Receptor Pathway Carcinogenic
Risk Hazard Index Risk exceeded?
Groundwater to Indoor Air NC NC NC
Soil Gas to Indoor Air NC NC NC
Indoor Air NC NC NC
Groundwater to Indoor Air NC NC NC
Soil Gas to Indoor Air NC NC NC
Indoor Air NC NC NC
Pathway Source
Source Soil NC
Source Groundwater NC
Source Soil NC
Source Groundwater NC
3. NM = Not modeled, user did not check this pathway as complete.
4. NC = Pathway not calculated, required contaminant migration parameters were not entered.
DIRECT CONTACT SOIL AND WATER CALCULATORS
Resident
Non-Residential Worker
Recreator/Trespasser
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.
Surface Water Exceedence of 2B at Receptor?
Exceedence of 2B at Receptor?
VAPOR INTRUSION CALCULATORS
Resident
Non-Residential Worker
CONTAMINANT MIGRATION CALCULATORS
Target Receptor Concentrations Exceeded?
Groundwater Exceedence of 2L at Receptor?
Exceedence of 2L at Receptor?
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.
Notes:
North Carolina DEQ Risk Calculator
Sitewide Risk Output Form 1B
Version Date: February 2024 NOTE: If any changes were made, select "Update Sitewide Risk Values" to obtain updated values.
Basis: November 2023 EPA RSL Table
Site ID: AJACC Auto (NCBP #24054-20-060)
Exposure Unit ID:
Receptor Pathway
Check box to
include in site-
wide risk
calculations
Carcinogenic
Risk Hazard Index
Check box to
include in site-
wide risk
calculations
Carcinogenic
Risk Hazard Index
Check box to
include in site-
wide risk
calculations
Carcinogenic
Risk Hazard Index
Check box to
include in site-
wide risk
calculations
Carcinogenic
Risk Hazard Index
Check box to
include in site-
wide risk
calculations
Carcinogenic
Risk Hazard Index
Check box to
include in site-
wide risk
calculations
Carcinogenic
Risk Hazard Index
Soil 4.2E-06 9.2E-02 4.2E-06 9.2E-02
Groundwater Use* NM NM NM NM
Soil 5.5E-07 7.5E-03 5.5E-07 7.5E-03
Groundwater Use* NM NM NM NM
Construction Worker Soil 2.5E-07 6.9E-02
Soil 2.3E-06 4.9E-02
Surface Water Use* NM NM
Groundwater to Indoor Air NM NM NM NM
Soil Gas to Indoor Air NM NM NM NM
Indoor Air NM NM NM NM
Groundwater to Indoor Air NM NM NM NM
Soil Gas to Indoor Air NM NM NM NM
Indoor Air NM NM NM NM
4.2E-06 9.2E-02 4.2E-06 9.2E-02 5.5E-07 7.5E-03 5.5E-07 7.5E-03 2.5E-07 6.9E-02 2.3E-06 4.9E-02
3. NM = Not Modeled
4. NC = Pathway not calculated
TOTAL SITEWIDE RISK FOR EACH RECEPTOR
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.
Resident
Non-Residential Worker
Resident
Non-Residential Worker
Recreator/Trespasser
VAPOR INTRUSION CALCULATORS
DIRECT CONTACT SOIL AND WATER CALCULATORS
Non-Residential Worker - Future Scenario Construction Worker Recreator/TrespasserResident - Current Scenario Resident - Future Scenario Non-Residential Worker - Current Scenario
North Carolina DEQ Risk Calculator
DEQ Risk Calculator - Direct Contact - Resident Soil
Version Date: February 2024
Basis: November 2023 EPA RSL Table
Site ID: AJACC Auto (NCBP #24054-20-060)
Exposure Unit ID:
* - Note that inhalation on this calculator refers to outdoor inhalation of volatiles and particulates, not indoor inhalation associated with vapor intrusion.
CAS # Chemical Name:
Ingestion
Concentratio
n (mg/kg)
Dermal
Concentratio
n (mg/kg)
Inhalation
Concentratio
n (mg/kg)*
Ingestion
Carcinogenic
Risk
Dermal
Carcinogenic
Risk
Inhalation
Carcinogenic
Risk*
Calculated
Carcinogenic
Risk
Ingestion
Hazard
Quotient
Dermal
Hazard
Quotient
Inhalation
Hazard
Quotient*
Calculated
Non-
Carcinogenic
Hazard
Quotient
67-64-1 Acetone 0.016 0.016 0.016 2.3E-07 2.3E-07
7440-38-2 Arsenic, Inorganic 0.881 0.881 0.881 1.1E-06 1.6E-07 2.3E-11 1.3E-06 2.3E-02 2.7E-03 9.5E-07 2.5E-02
7440-39-3 Barium 126 126 126 8.1E-03 4.1E-06 8.1E-03
7440-43-9 Cadmium (Diet)0.0931 0.0931 0.0931 1.0E-12 1.0E-12 1.2E-02 1.1E-03 1.5E-07 1.3E-02
18540-29-9 Chromium(VI)0.642 0.642 0.642 2.1E-06 9.0E-10 2.1E-06 2.7E-03 1.0E-07 2.7E-03
7439-92-1 ~Lead and Compounds 13.6 13.6 13.6 <SL** <SL** <SL**
7439-97-6 ~Mercury (elemental)0.0501 0.0501 0.0501 4.3E-03 4.3E-03
75-09-2 Methylene Chloride 0.002 0.002 0.002 2.6E-11 6.3E-12 3.2E-11 4.3E-06 1.0E-06 5.3E-06
56-55-3 ~Benz[a]anthracene 0.182 0.182 0.182 1.2E-07 4.0E-08 2.3E-09 1.6E-07
205-82-3 ~Benzo(j)fluoranthene 0.257 0.257 0.257 4.4E-07 1.6E-07 1.7E-13 6.1E-07
50-32-8 ~Benzo[a]pyrene 0.214 0.214 0.214 1.4E-06 4.7E-07 2.1E-12 1.9E-06 9.1E-03 2.8E-03 1.7E-06 1.2E-02
218-01-9 ~Chrysene 0.193 0.193 0.193 1.3E-09 4.2E-10 1.9E-15 1.7E-09
206-44-0 ~Fluoranthene 0.307 0.307 0.307 9.8E-05 3.0E-05 1.3E-04
129-00-0 ~Pyrene 0.363 0.363 0.363 1.5E-04 4.8E-05 2.0E-04
7782-49-2 Selenium 0.14 0.14 0.14 3.6E-04 1.1E-10 3.6E-04
7440-22-4 Silver 0.0489 0.0489 0.0489 1.3E-04 1.3E-04
108-88-3 Toluene 0.0008 0.0008 0.0008 1.3E-07 3.4E-08 1.6E-07
Cumulative: 6.0E-06 6.6E-02
Output Form 2A
** - Note that the EPA has no consensus on reference dose or cancer slope factor values for lead, therefore it is not possible to calculate cancer risk or hazard quotient. Lead concentrations are compared to the EPA screening
level of 200 mg/kg for residential soil. If it has been demonstrated that additional sources of lead are present (e.g., lead water service lines or lead-based paint), the EPA screening level is 100 mg/kg, which is used below for
comparison to be conservative.
North Carolina DEQ Risk Calculator
DEQ Risk Calculator - Direct Contact - Non-Residential Worker Soil
Version Date: February 2024
Basis: November 2023 EPA RSL Table
Site ID: AJACC Auto (NCBP #24054-20-060)
Exposure Unit ID:
* - Note that inhalation on this calculator refers to outdoor inhalation of volatiles and particulates, not indoor inhalation associated with vapor intrusion.
CAS # Chemical Name:
Ingestion
Concentration
(mg/kg)
Dermal
Concentration
(mg/kg)
Inhalation
Concentration
(mg/kg)*
Ingestion
Carcinogenic
Risk
Dermal
Carcinogenic
Risk
Inhalation
Carcinogenic
Risk
Calculated
Carcinogenic
Risk
Ingestion
Hazard
Quotient
Dermal
Hazard
Quotient
Inhalation
Hazard
Quotient
Calculated
Non-
Carcinogenic
Hazard
Quotient
67-64-1 Acetone 0.016 0.016 0.016 1.5E-08 1.5E-08
7440-38-2 Arsenic, Inorganic 0.881 0.881 0.881 2.4E-07 5.1E-08 5.2E-12 2.9E-07 1.5E-03 3.2E-04 2.3E-07 1.8E-03
7440-39-3 Barium 126 126 126 5.4E-04 9.7E-07 5.4E-04
7440-43-9 Cadmium (Diet)0.0931 0.0931 0.0931 2.3E-13 2.3E-13 8.0E-04 1.3E-04 3.6E-08 9.3E-04
18540-29-9 Chromium(VI)0.642 0.642 0.642 9.8E-08 7.4E-11 9.8E-08 1.8E-04 2.5E-08 1.8E-04
7439-92-1 ~Lead and Compounds 13.6 13.6 13.6 <SL**<SL**<SL**
7439-97-6 ~Mercury (elemental)0.0501 0.0501 0.0501 1.0E-03 1.0E-03
75-09-2 Methylene Chloride 0.002 0.002 0.002 1.2E-12 5.2E-13 1.7E-12 2.9E-07 2.4E-07 5.3E-07
56-55-3 ~Benz[a]anthracene 0.182 0.182 0.182 5.6E-09 3.1E-09 1.9E-10 8.8E-09
205-82-3 ~Benzo(j)fluoranthene 0.257 0.257 0.257 9.4E-08 5.2E-08 3.9E-14 1.5E-07
50-32-8 ~Benzo[a]pyrene 0.214 0.214 0.214 6.5E-08 3.6E-08 1.8E-13 1.0E-07 6.1E-04 3.4E-04 4.1E-07 9.5E-04
218-01-9 ~Chrysene 0.193 0.193 0.193 5.9E-11 3.2E-11 1.6E-16 9.1E-11
206-44-0 ~Fluoranthene 0.307 0.307 0.307 6.6E-06 3.6E-06 1.0E-05
129-00-0 ~Pyrene 0.363 0.363 0.363 1.0E-05 5.7E-06 1.6E-05
7782-49-2 Selenium 0.14 0.14 0.14 2.4E-05 2.7E-11 2.4E-05
7440-22-4 Silver 0.0489 0.0489 0.0489 8.4E-06 8.4E-06
108-88-3 Toluene 0.0008 0.0008 0.0008 8.6E-09 8.0E-09 1.7E-08
Cumulative: 6.5E-07 5.5E-03
Output Form 2C
** - Note that the EPA has no consensus on reference dose or cancer slope factor values for lead, therefore it is not possible to calculate cancer risk or hazard quotient. Lead concentrations are compared to the EPA screening level of 800
mg/kg for commercial/industrial soil.
North Carolina DEQ Risk Calculator
DEQ Risk Calculator - Direct Contact - Construction Worker Soil
Version Date: February 2024
Basis: November 2023 EPA RSL Table
Site ID: AJACC Auto (NCBP #24054-20-060)
Exposure Unit ID:
* - Note that inhalation on this calculator refers to outdoor inhalation of volatiles and particulates, not indoor inhalation associated with vapor intrusion.
CAS # Chemical Name:
Ingestion
Concentration
(mg/kg)
Dermal
Concentration
(mg/kg)
Inhalation
Concentration
(mg/kg)*
Ingestion
Carcinogenic
Risk
Dermal
Carcinogenic
Risk
Inhalation
Carcinogenic
Risk
Calculated
Carcinogenic
Risk
Ingestion
Hazard
Quotient
Dermal
Hazard
Quotient
Inhalation
Hazard
Quotient
Calculated
Non-
Carcinogenic
Hazard
Quotient
67-64-1 Acetone 0.016 0.016 0.016 7.9E-08 7.9E-08
7440-38-2 Arsenic, Inorganic 0.881 0.881 0.881 3.2E-08 5.1E-09 1.2E-08 4.9E-08 5.2E-03 8.3E-04 1.3E-02 1.9E-02
7440-39-3 Barium 126 126 126 1.9E-03 5.7E-03 7.5E-03
7440-43-9 Cadmium (Diet)0.0931 0.0931 0.0931 5.2E-10 5.2E-10 5.5E-04 7.0E-05 2.1E-03 2.7E-03
18540-29-9 Chromium(VI)0.642 0.642 0.642 1.3E-08 1.7E-07 1.8E-07 3.8E-04 4.8E-04 8.6E-04
7439-92-1 ~Lead and Compounds 13.6 13.6 13.6 <SL**<SL**<SL**
7439-97-6 ~Mercury (elemental)0.0501 0.0501 0.0501 5.1E-03 5.1E-03
75-09-2 Methylene Chloride 0.002 0.002 0.002 1.6E-13 1.3E-13 2.9E-13 9.8E-08 9.3E-07 1.0E-06
56-55-3 ~Benz[a]anthracene 0.182 0.182 0.182 7.3E-10 3.1E-10 7.0E-11 1.1E-09
205-82-3 ~Benzo(j)fluoranthene 0.257 0.257 0.257 1.2E-08 5.2E-09 8.7E-11 1.8E-08
50-32-8 ~Benzo[a]pyrene 0.214 0.214 0.214 8.6E-09 3.6E-09 4.0E-10 1.3E-08 2.1E-03 8.8E-04 2.4E-02 2.7E-02
218-01-9 ~Chrysene 0.193 0.193 0.193 7.8E-12 3.2E-12 3.6E-13 1.1E-11
206-44-0 ~Fluoranthene 0.307 0.307 0.307 9.0E-06 3.8E-06 1.3E-05
129-00-0 ~Pyrene 0.363 0.363 0.363 3.6E-06 1.5E-06 5.1E-06
7782-49-2 Selenium 0.14 0.14 0.14 8.3E-05 1.6E-06 8.4E-05
7440-22-4 Silver 0.0489 0.0489 0.0489 2.9E-05 2.9E-05
108-88-3 Toluene 0.0008 0.0008 0.0008 2.9E-09 4.0E-08 4.3E-08
Cumulative: 2.6E-07 6.3E-02
Output Form 2E
** - Note that the EPA has no consensus on reference dose or cancer slope factor values for lead, therefore it is not possible to calculate cancer risk or hazard quotient. Lead concentrations are compared to the EPA screening level of 800 mg/kg
for commercial/industrial soil.
North Carolina DEQ Risk Calculator
DEQ Risk Calculator - Direct Contact - Recreator/Trespasser Soil Output Form 2F
Version Date: February 2024
Basis: November 2023 EPA RSL Table
Site ID: AJACC Auto (NCBP #24054-20-060)
Exposure Unit ID:
* - Note that inhalation on this calculator refers to outdoor inhalation of volatiles and particulates, not indoor inhalation associated with vapor intrusion.
Receptor Type:
CAS # Chemical Name:
Ingestion
Concentration
(mg/kg)
Dermal
Concentration
(mg/kg)
Inhalation
Concentration
(mg/kg)*
Ingestion
Carcinogenic
Risk
Dermal
Carcinogenic
Risk
Inhalation
Carcinogenic
Risk
Calculated
Carcinogenic
Risk
Ingestion
Hazard
Quotient
Dermal
Hazard
Quotient
Inhalation
Hazard
Quotient
Calculated
Non-
Carcinogenic
Hazard
Quotient
67-64-1 Acetone 0.016 0.016 0.016 1.3E-07 1.3E-07
7440-38-2 Arsenic, Inorganic 0.881 0.881 0.881 6.4E-07 8.9E-08 1.1E-12 7.2E-07 1.3E-02 1.5E-03 4.4E-08 1.4E-02
7440-39-3 Barium 126 126 126 4.5E-03 1.9E-07 4.5E-03
7440-43-9 Cadmium (Diet)0.0931 0.0931 0.0931 4.7E-14 4.7E-14 6.6E-03 6.3E-04 7.0E-09 7.3E-03
18540-29-9 Chromium(VI)0.642 0.642 0.642 1.2E-06 4.2E-11 1.2E-06 1.5E-03 4.8E-09 1.5E-03
7439-92-1 ~Lead and Compounds 13.6 13.6 13.6 <SL** <SL** <SL**
7439-97-6 ~Mercury (elemental)0.0501 0.0501 0.0501 2.0E-04 2.0E-04
75-09-2 Methylene Chloride 0.002 0.002 0.002 1.5E-11 2.9E-13 1.5E-11 2.4E-06 4.7E-08 2.4E-06
56-55-3 ~Benz[a]anthracene 0.182 0.182 0.182 6.6E-08 2.2E-08 1.1E-10 8.8E-08
205-82-3 ~Benzo(j)fluoranthene 0.257 0.257 0.257 2.5E-07 9.0E-08 7.9E-15 3.4E-07
50-32-8 ~Benzo[a]pyrene 0.214 0.214 0.214 7.8E-07 2.6E-07 9.9E-14 1.0E-06 5.1E-03 1.6E-03 8.0E-08 6.6E-03
218-01-9 ~Chrysene 0.193 0.193 0.193 7.0E-10 2.3E-10 8.9E-17 9.4E-10
206-44-0 ~Fluoranthene 0.307 0.307 0.307 5.5E-05 1.7E-05 7.2E-05
129-00-0 ~Pyrene 0.363 0.363 0.363 8.6E-05 2.7E-05 1.1E-04
7782-49-2 Selenium 0.14 0.14 0.14 2.0E-04 5.3E-12 2.0E-04
7440-22-4 Silver 0.0489 0.0489 0.0489 7.0E-05 7.0E-05
108-88-3 Toluene 0.0008 0.0008 0.0008 7.1E-08 1.6E-09 7.3E-08
Cumulative: 3.4E-06 3.5E-02
** - Note that the EPA has no consensus on reference dose or cancer slope factor values for lead, therefore it is not possible to calculate cancer risk or hazard quotient. Lead concentrations are compared to the EPA screening level of 200
mg/kg for residential soil. If it has been demonstrated that additional sources of lead are present (e.g., lead water service lines or lead-based paint), the EPA screening level is 100 mg/kg, which is used below for comparison to be conservative.
North Carolina DEQ Risk Calculator