PRLF571_20240116_RA-16d_Crawlspace Air Sampling_Report

2401 Brentwood Road, Suite 107
Raleigh, NC 27604
P [phone]
F [phone]
Terracon.com

January 16, 2024

Sean Gallagher
NCDEQ – Division of Waste Management
Special Remediation Branch – Pre-Regulatory Landfill Unit
1646 Mail Service Center
Raleigh, NC 27699-1646

Subject: Remedial Action Phase – Task Order 571RA-16d
Albemarle Dump
Nanny Drive
Albemarle, Stanly County, North Carolina
ID # NONCD0000571
State Contract # N42621-A
Terracon Project # 71237029

Dear Mr. Gallagher:

Terracon Consultants, Inc. (Terracon) is pleased to submit this letter summarizing
crawlspace sampling activities for the former Albemarle Dump (site). This report has been
prepared in general accordance with Terracon’s work plan for 571RA-16d dated
November 7, 2023, and North Carolina Department of Environmental Quality (NCDEQ)
Approval of Work Plan and Cost Proposal – Task Order 571RA-16d, dated November 9,
2023.

These activities were requested by the NCDEQ Division of Waste Management (DWM),
Superfund Section – Special Remediation Branch (SRB) Pre-Regulatory Landfill (PRLF) Unit
project manager (Unit PM) at 32311 and 32322 Nanny Drive.
Task Order 571RA-16d: Crawlspace Air Assessment – Residential Properties 32311
and 32322 Nanny Drive
Terracon placed radial symmetry diffusive air samplers (Radiello®) in the crawlspace of
each of the residences. The samples were collected to evaluate the potential presence of
chlorinated solvents and Volatile Organic Compounds (VOCs) in the crawlspaces. Three
samplers were placed in each residential crawl space. In addition, one duplicate sampler
and one sampler in an outdoor/background sample location were placed for air sample
collection.

Albemarle Dump – NONCD0000571
Remedial Action Phase 571RA-16d | Albemarle, NC
January 16, 2024| Terracon Project No. 71237029

Facilities | Environmental | Geotechnical | Materials 2
Terracon mobilized to the site on November 28, 2023, to deploy the Radiello® samplers in
accordance with Terracon’s Standard Operating Procedures (SOP), laboratory provided
instructions, and guidance from NCDEQ DWM. Sample location information as follows:

Sample ID Address Location/ Notes

On December 5, 2023, seven days following deployment, Terracon returned to the site to
retrieve the samplers and prepare them for shipment to the laboratory for analysis. The six
residential crawlspace samples, one duplicate, and one background sample were shipped via
FedEx to Eurofins Air Toxics, LLC (Eurofins) in Folsom, California, and analyzed for
chlorinated VOCs (CVOCs) and VOCs via Modified EPA Method TO-17. Field notes recorded
during Radiello deployment and retrieval are included in Appendix A. Sampling locations are
shown on Exhibit 1.

Analytical Results and Risk Evaluation
The laboratory analytical report provided by Eurofins indicated CVOCs and VOCs were
detected at concentrations above laboratory method detection limits. At the direction of the
Unit PM and in accordance with the DWM Trichloroethylene (TCE) Indoor Air Inhalation
Immediate Action Levels (IAL) and Response (TCE Guidance) dated July 2019, Terracon
compared the resulting concentrations of TCE to the Residential IAL of 2.1 µg/m3 to
evaluate the need for immediate mitigation efforts to eliminate and/or reduce exposure
concentrations. Detected concentrations of TCE did not exceed the Residential IAL, and
mitigation efforts were not required. The laboratory reports are included in Appendix B and
results are summarized on Table 1

Although TCE alone did not exceed its Residential IAL, a cumulative risk evaluation was
completed using the July 2023 NCDEQ Risk Calculator. The detected concentrations of
constituents at each sample location were entered into the NCDEQ Risk Calculator. Default
exposure parameter values (e.g., lifetime, body weight, exposure duration) in the NCDEQ
Risk Calculator were used for the evaluations. A cumulative carcinogenic risk of 1E-04 and a
hazard index (HI) of 1.0 (cumulative non-carcinogenic risk) were also used as the target risk
thresholds. Exceedance of one or more of the target risk thresholds indicate an unacceptable
level of risk for that exposure pathway and receptor. The risk calculator evaluations are
included in Appendix C and results are summarized on Table 1.

Albemarle Dump – NONCD0000571
Remedial Action Phase 571RA-16d | Albemarle, NC
January 16, 2024| Terracon Project No. 71237029

Facilities | Environmental | Geotechnical | Materials 3

The results of the NCDEQ Risk Calculator evaluation did not exceed risk thresholds for
residential indoor air.

If you have any questions, please contact Michael Dail at [phone].

Sincerely,
Terracon Consultants, Inc.

Erin E. Greene Michael B. Dail, PG
Project Geologist Senior Geologist

Allison K. Stenger
Project Scientist

Attachments:
Exhibit 1 – Radiello® Sample Locations Map
Table 1 – Radiello® Analytical Results
Appendix A – Field Notes
Appendix B – Laboratory Analytical Reports and Chain of Custody Records
Appendix C – North Carolina Department of Environmental Quality Risk Calculations

Exhibit
WDA-B
571-RES-05
DUP-RES
571-RES-06
571-RES-04
571-RES-BKG
571-RES-03
571-RES-01 571-RES-02
1
EXHIBIT
NO.
Pre-Regulatory Landfill
Albemarle Dump
Site ID No. NONCD0000571
Albemarle, Stanly County, North Carolina
Radiello® Sample Locations Map
Phone: [phone] Fax: [phone]
Raleigh, NC 276042401 Brentwood Road, Suite 107January 2024Date:
Albermarle Maps
Filename:
1 in = 90 ftScale:
71237029
Project No.
MBDApproved By:
EGChecked By:
NSRDrawn By:
EGPM:
0 90 18045
Feet
Site Parcel Boundary
Stanly County Parcels
Disposal Area B
Radiello® Sample Locations
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DATA SOURCES:
Bing Aerial Basemap 2024; Parcels based on NC One
Map Stanly County

Table

Task Order 571RA-16d | NONCD0000571
Albemarle Dump | Albemarle, NC
January 2024 | Terracon Project No. 71237029

571-RES-01 571-RES-02 571-RES-03 571-RES-04 571-RES-06 571-RES-BKG
12/5/2023 12/5/2023 12/5/2023 12/5/2023 12/5/2023 12/5/2023 12/5/2023 12/5/2023
Analyte Unit DUP-RES
1,2,4-Trimethylbenzene ug/m3 0.32 0.39 0.26 ND ND ND ND ND
1,4-Dichlorobenzene ug/m3 0.48 0.46 0.41 ND ND ND ND ND
2-Butanone ug/m3 1.4 1.2 1.3 ND ND ND ND ND
Benzene ug/m3 1.6 1.5 1.4 ND ND ND ND ND
Carbon Tetrachloride ug/m3 0.18 0.20 0.17 0.19 0.19 0.18 0.18 0.15
Ethanol ug/m3 5.8 2.4 4.8 ND ND ND ND ND
Ethylbenzene ug/m3 0.30 0.30 0.25 ND ND ND ND ND
Hexane ug/m3 0.59 0.54 0.44 ND 0.16 ND ND 0.15
m,p-Xylenes ug/m3 0.86 0.85 0.71 ND 0.17 0.14 ND ND
n-Heptane ug/m3 0.33 0.34 0.27 ND ND ND ND ND
O-Xylene ug/m3 0.28 0.27 0.22 ND ND ND ND ND
Tetrachloroethene ug/m3 0.28 0.32 0.27 1.4 0.55 0.50 0.71 ND
Toluene ug/m3 1.8 1.8 1.5 0.34 0.38 0.34 0.33 0.31
Trichloroethene ug/m3 ND ND ND 0.29 ND ND 0.14 ND
7.9E-02 7.7E-02 6.8E-02 1.7E-01 1.7E-02 NE 8.6E-02 NE
No No No No No NE No NE
Notes:
ug/m3 - micrograms per meter cubed
EPA – Environmental Protection Agency
A duplicate sample was collected from the 571-RES-05 location
The NCDEQ Risk Calculator evaluation is provided in Appendix C
NE - Not evaluated
Modified EPA TO-17
571-RES-05
Table 1
Radiello® Analytical Results
Sam le Location
Sam le Date
NCDEQ Risk Calculator Results
Risk Exceedance Yes/No
Residential Indoor Air Hazard Index
1 Facilities | Environmental | Geotechnical | Materials

Appendix A
Field Notes

Appendix B
Laboratory Analytical Report and Chain of Custody
12/12/2023
Ms. Erin Greene
Terracon Consulting Engineers
2701 Westport Road
Charlotte NC 28208
Project Name: Albemarle Dump
Project #: 71237029
Dear Ms. Erin Greene
The following report includes the data for the above referenced project for sample(s)
received on 12/7/2023 at Eurofins Air Toxics LLC.
The data and associated QC analyzed by Passive S.E. RAD130/SKC are compliant
with the project requirements or laboratory criteria with the exception of the deviations
noted in the attached case narrative.
Thank you for choosing Eurofins Air Toxics LLC. for your air analysis needs. Eurofins Air
Toxics Inc. is committed to providing accurate data of the highest quality. Please feel free
to contact the Project Manager: Brian Whittaker at 916-985-1000 if you have any
questions regarding the data in this report.
Regards,
Brian Whittaker
Project Manager
Workorder #: 2312126
Page 1 of 28
Ms. Erin Greene
Terracon Consulting Engineers
2701 Westport Road
Charlotte, NC 28208
WORK ORDER #: 2312126
CLIENT:BILL TO:
PHONE:
Accounts Payable
Terracon Consulting Engineers
2701 Westport Road
Charlotte, NC 28208
704-509-1777
704-509-1888
12/07/2023
DATE COMPLETED:12/12/2023
P.O. #71237029
PROJECT #71237029 Albemarle Dump
Work Order Summary
FAX:
DATE RECEIVED:CONTACT:Brian Whittaker
NAMEFRACTION #TEST
01A 571-RES-01_20231205 Passive S.E. RAD130/SKC
02A 571-RES-02_20231205 Passive S.E. RAD130/SKC
03A 571-RES-03_20231205 Passive S.E. RAD130/SKC
04A 571-RES-04_20231205 Passive S.E. RAD130/SKC
05A 571-RES-05_20231205 Passive S.E. RAD130/SKC
06A 571-RES-06_20231205 Passive S.E. RAD130/SKC
07A 571-RES-BKG_20231205 Passive S.E. RAD130/SKC
08A DUP-RES_20231205 Passive S.E. RAD130/SKC
09A Lab Blank Passive S.E. RAD130/SKC
10A CCV Passive S.E. RAD130/SKC
11A LCS Passive S.E. RAD130/SKC
11AA LCSD Passive S.E. RAD130/SKC
CERTIFIED BY:
Technical Director
DATE: 12/12/23
Page 2 of 28
Certification numbers: AZ Licensure AZ0775, FL NELAP – E87680, LA NELAP – 02089, NH NELAP – 209222, NJ NELAP - CA016,
NY NELAP - 11291, TX NELAP – T104704434-22-18, UT NELAP – CA009332022-14, VA NELAP - 12240, WA ELAP - C935
Name of Accreditation Body: NELAP/ORELAP (Oregon Environmental Laboratory Accreditation Program) CA300005-017
Eurofins Environment Testing Northern California, LLC certifies that the test results contained in this report meet
all requirements of the 2016 TNI Standard.
This report shall not be reproduced, except in full, without the written approval of Eurofins Air Toxics, LLC.
180 BLUE RAVINE ROAD, SUITE B FOLSOM, CA - 95630
[phone]
LABORATORY NARRATIVE
RAD130 Passive SE by Mod EPA TO-17
Terracon Consulting Engineers
Workorder# 2312126
Eight Radiello 130 (Solvent) samples were received on December 07, 2023. The laboratory analyzed
the charcoal sorbent bed of the passive sampler following modified method EPA TO-17. The VOCs
were chemically extracted using carbon disulfide and an aliquot of the extract was injected into a
GC/MS for identification and quantification of volatile organic compounds (VOCs).
The mass of each target compound adsorbed by the sampler was converted to units of concentration
using the sample deployment time and the sampling rate for each VOC. If sampling rates were
calculated by the lab or the manufacturer, the concentration result has been flagged as an estimated
value. Results are not corrected for desorption efficiency.
The reference method used for this procedure is EPA TO-17, which describes the collection of VOCs
in ambient air using sorbents and analysis by GC/MS. Because TO-17 describes active sample
collection using a pump and thermal desorption as the preparation step, several modifications are
required. Modifications to TO-17 are listed in the table below:
Requirement ATL ModificationsTO-17
Sample Collection Pump pulls measured
air volume through
sorbent tube
VOCs in air adsorbed onto sorbent bed passively through
diffusion
Sample Preparation Thermal extraction Solvent extraction
Sorbent tube conditioning Condition newly
packed tubes prior to
use
Charcoal-based sorbent is a single use media and
conditioning is conducted by vendor.
Instrumentation Thermal desorption
introduction system
Liquid injection introduction system
Internal Standard Gas-phase internal
standard introduced on
the tube or focusing
trap during analysis
Liquid-phase internal standard introduced on the tube at
the time of extraction
Media and sample storage <4 deg C, 30 days Media shelf life is determined by vendor; sample
hold-time is 6 months for the RAD130 and WMS.
Sample preservation requirements are storage in a cool,
solvent-free refrigerator and optional use of ice during
shipping.
Internal Standard Recovery +/-40% of daily CCV
area
-50% to +100% of daily CCV area
Receiving Notes
The Chain of Custody (COC) was not relinquished properly. A time was not provided by the field
sampler.
The uptake rates were corrected based on average field temperatures if provided. In the absence of
Analytical Notes
Page 3 of 28
field temperatures, the uptake rates determined at 25 deg C were used.
If validated uptake rates were not available, rates were estimated using the chemical's diffusion
coefficient in air and the geometric constant of the sampler. Chemicals that are poorly retained by the
sorbent over the sampling duration may exhibit a low bias. All concentrations calculated using
estimated rates are qualified with a "C" flag.
To calculate ug/m3 concentrations in the Lab Blank, a sampling duration of 10122 minutes was
applied. The assumed temperature used for the uptake rate is listed on the data page. If the field
temperatures were provided, the rate was adjusted in the same manner as the field samples.
Ten qualifiers may have been used on the data analysis sheets and indicate as follows:
B - Compound present in laboratory blank greater than reporting limit (background subtraction not
performed).
J - Estimated value.
E - Exceeds instrument calibration range.
S - Saturated peak.
Q - Exceeds quality control limits.
U - Compound analyzed for but not detected above the reporting limit.
UJ- Non-detected compound associated with low bias in the CCV
N - The identification is based on presumptive evidence.
C - Estimated concentration due to calculated sampling rate
CN - See case narrative explanation.
File extensions may have been used on the data analysis sheets and indicates
as follows:
a-File was requantified
b-File was quantified by a second column and detector
r1-File was requantified for the purpose of reissue
Definition of Data Qualifying Flags
Page 4 of 28
VOCS BY PASSIVE SAMPLER - GC/MS
Summary of Detected Compounds
Client Sample ID: 571-RES-01_20231205
Lab ID#: 2312126-01A
(ug/m3)(ug)(ug/m3)(ug)Compound
AmountAmountRpt. LimitRpt. Limit
1.0 0.97 6.0 5.8Ethanol
0.10 0.15 0.39 0.59Hexane
0.20 0.25 1.1 1.42-Butanone (Methyl Ethyl Ketone)
0.10 0.15 0.12 0.18Carbon Tetrachloride
0.40 0.50 1.3 1.6Benzene
0.10 0.17 0.19 0.33Heptane
0.10 0.13 1.3 1.8Toluene
0.10 0.17 0.16 0.28Tetrachloroethene
0.10 0.14 0.21 0.30Ethyl Benzene
0.10 0.14 0.61 0.86m,p-Xylene
0.10 0.15 0.18 0.28o-Xylene
0.10 0.19 0.25 0.481,4-Dichlorobenzene
0.10 0.20 0.16 0.321,2,4-Trimethylbenzene
Client Sample ID: 571-RES-02_20231205
Lab ID#: 2312126-02A
(ug/m3)(ug)(ug/m3)(ug)Compound
AmountAmountRpt. LimitRpt. Limit
1.0 0.97 2.5 2.4Ethanol
0.10 0.15 0.36 0.54Hexane
0.20 0.25 0.97 1.22-Butanone (Methyl Ethyl Ketone)
0.10 0.15 0.14 0.20Carbon Tetrachloride
0.40 0.50 1.2 1.5Benzene
0.10 0.17 0.20 0.34Heptane
0.10 0.13 1.3 1.8Toluene
0.10 0.17 0.19 0.32Tetrachloroethene
0.10 0.15 0.20 0.30Ethyl Benzene
0.10 0.14 0.60 0.85m,p-Xylene
0.10 0.15 0.18 0.27o-Xylene
0.10 0.19 0.24 0.461,4-Dichlorobenzene
0.10 0.20 0.20 0.391,2,4-Trimethylbenzene
Page 5 of 28
VOCS BY PASSIVE SAMPLER - GC/MS
Summary of Detected Compounds
Client Sample ID: 571-RES-03_20231205
Lab ID#: 2312126-03A
(ug/m3)(ug)(ug/m3)(ug)Compound
AmountAmountRpt. LimitRpt. Limit
1.0 0.97 4.9 4.8Ethanol
0.10 0.15 0.29 0.44Hexane
0.20 0.25 1.0 1.32-Butanone (Methyl Ethyl Ketone)
0.10 0.15 0.11 0.17Carbon Tetrachloride
0.40 0.50 1.1 1.4Benzene
0.10 0.17 0.16 0.27Heptane
0.10 0.13 1.1 1.5Toluene
0.10 0.17 0.16 0.27Tetrachloroethene
0.10 0.15 0.17 0.25Ethyl Benzene
0.10 0.14 0.50 0.71m,p-Xylene
0.10 0.15 0.14 0.22o-Xylene
0.10 0.19 0.21 0.411,4-Dichlorobenzene
0.10 0.20 0.13 0.261,2,4-Trimethylbenzene
Client Sample ID: 571-RES-04_20231205
Lab ID#: 2312126-04A
(ug/m3)(ug)(ug/m3)(ug)Compound
AmountAmountRpt. LimitRpt. Limit
0.10 0.15 0.13 0.19Carbon Tetrachloride
0.10 0.14 0.20 0.29Trichloroethene
0.10 0.13 0.25 0.34Toluene
0.10 0.17 0.81 1.4Tetrachloroethene
Client Sample ID: 571-RES-05_20231205
Lab ID#: 2312126-05A
(ug/m3)(ug)(ug/m3)(ug)Compound
AmountAmountRpt. LimitRpt. Limit
0.10 0.15 0.10 0.16Hexane
0.10 0.15 0.13 0.19Carbon Tetrachloride
0.10 0.13 0.29 0.38Toluene
0.10 0.17 0.33 0.55Tetrachloroethene
0.10 0.14 0.12 0.17m,p-Xylene
Page 6 of 28
VOCS BY PASSIVE SAMPLER - GC/MS
Summary of Detected Compounds
Client Sample ID: 571-RES-06_20231205
Lab ID#: 2312126-06A
(ug/m3)(ug)(ug/m3)(ug)Compound
AmountAmountRpt. LimitRpt. Limit
0.10 0.15 0.12 0.18Carbon Tetrachloride
0.10 0.14 0.10 0.14Trichloroethene
0.10 0.13 0.25 0.33Toluene
0.10 0.17 0.42 0.71Tetrachloroethene
Client Sample ID: 571-RES-BKG_20231205
Lab ID#: 2312126-07A
(ug/m3)(ug)(ug/m3)(ug)Compound
AmountAmountRpt. LimitRpt. Limit
0.10 0.15 0.10 0.15Hexane
0.10 0.15 0.10 0.15Carbon Tetrachloride
0.10 0.13 0.23 0.31Toluene
Client Sample ID: DUP-RES_20231205
Lab ID#: 2312126-08A
(ug/m3)(ug)(ug/m3)(ug)Compound
AmountAmountRpt. LimitRpt. Limit
0.10 0.15 0.12 0.18Carbon Tetrachloride
0.10 0.13 0.25 0.34Toluene
0.10 0.17 0.30 0.50Tetrachloroethene
0.10 0.14 0.10 0.14m,p-Xylene
Page 7 of 28
Client Sample ID: 571-RES-01_20231205
Lab ID#: 2312126-01A
VOCS BY PASSIVE SAMPLER - GC/MS
18120718simFile Name:
Dil. Factor:1.00
Date of Collection: 12/5/23 12:48:00 PM
Date of Analysis: 12/7/23 03:39 PM
Date of Extraction: 12/7/23
(ug/m3)(ug)(ug/m3)(ug)Compound
AmountAmountRpt. LimitRpt. Limit
1.0 0.97 6.0 5.8Ethanol
0.10 0.15 Not Detected Not DetectedMethyl tert-butyl ether
0.10 0.15 0.39 0.59Hexane
0.40 0.51 Not Detected Not DetectedEthyl Acetate
0.20 0.25 1.1 1.42-Butanone (Methyl Ethyl Ketone)
0.10 0.13 Not Detected Not DetectedChloroform
0.10 0.16 Not Detected Not Detected1,1,1-Trichloroethane
0.10 0.18 Not Detected Not DetectedCyclohexane
0.10 0.15 0.12 0.18Carbon Tetrachloride
0.40 0.50 1.3 1.6Benzene
0.10 0.13 Not Detected Not Detected1,2-Dichloroethane
0.10 0.17 0.19 0.33Heptane
0.10 0.14 Not Detected Not DetectedTrichloroethene
0.20 0.30 Not Detected Not Detected4-Methyl-2-pentanone
0.10 0.13 1.3 1.8Toluene
0.10 0.17 0.16 0.28Tetrachloroethene
0.10 0.14 Not Detected Not DetectedChlorobenzene
0.10 0.14 0.21 0.30Ethyl Benzene
0.10 0.14 0.61 0.86m,p-Xylene
0.10 0.15 0.18 0.28o-Xylene
0.10 0.16 Not Detected Not DetectedStyrene
0.10 0.17 Not Detected Not DetectedPropylbenzene
0.10 0.19 0.25 0.481,4-Dichlorobenzene
0.10 0.40 Not Detected Not DetectedNaphthalene
0.10 0.16 Not Detected C Not Detected C1,1-Dichloroethane
0.40 0.52 Not Detected C Not Detected C1,1-Dichloroethene
0.10 0.16 Not Detected C Not Detected Ccis-1,2-Dichloroethene
0.10 0.16 Not Detected C Not Detected C1,1,2,2-Tetrachloroethane
0.20 0.33 Not Detected C Not Detected Ctrans-1,2-Dichloroethene
0.10 0.15 Not Detected C Not Detected C1,1,2-Trichloroethane
0.10 0.20 0.16 0.321,2,4-Trimethylbenzene
0.10 0.17 Not Detected C Not Detected C1,2-Dichlorobenzene
0.10 0.19 Not Detected C Not Detected C1,3,5-Trimethylbenzene
0.10 0.17 Not Detected C Not Detected C1,3-Dichlorobenzene
C = Estimated concentration due to calculated sampling rate.
Temperature = 77.0F , duration time = 10083 minutes.
Container Type: Radiello 130 (Solvent)
Limits%RecoverySurrogates
Method
Page 8 of 28
Client Sample ID: 571-RES-01_20231205
Lab ID#: 2312126-01A
VOCS BY PASSIVE SAMPLER - GC/MS
18120718simFile Name:
Dil. Factor:1.00
Date of Collection: 12/5/23 12:48:00 PM
Date of Analysis: 12/7/23 03:39 PM
Date of Extraction: 12/7/23
Limits%RecoverySurrogates
Method
101 70-130Toluene-d8
Page 9 of 28
Client Sample ID: 571-RES-02_20231205
Lab ID#: 2312126-02A
VOCS BY PASSIVE SAMPLER - GC/MS
18120719simFile Name:
Dil. Factor:1.00
Date of Collection: 12/5/23 12:44:00 PM
Date of Analysis: 12/7/23 04:07 PM
Date of Extraction: 12/7/23
(ug/m3)(ug)(ug/m3)(ug)Compound
AmountAmountRpt. LimitRpt. Limit
1.0 0.97 2.5 2.4Ethanol
0.10 0.15 Not Detected Not DetectedMethyl tert-butyl ether
0.10 0.15 0.36 0.54Hexane
0.40 0.51 Not Detected Not DetectedEthyl Acetate
0.20 0.25 0.97 1.22-Butanone (Methyl Ethyl Ketone)
0.10 0.13 Not Detected Not DetectedChloroform
0.10 0.16 Not Detected Not Detected1,1,1-Trichloroethane
0.10 0.18 Not Detected Not DetectedCyclohexane
0.10 0.15 0.14 0.20Carbon Tetrachloride
0.40 0.50 1.2 1.5Benzene
0.10 0.13 Not Detected Not Detected1,2-Dichloroethane
0.10 0.17 0.20 0.34Heptane
0.10 0.14 Not Detected Not DetectedTrichloroethene
0.20 0.30 Not Detected Not Detected4-Methyl-2-pentanone
0.10 0.13 1.3 1.8Toluene
0.10 0.17 0.19 0.32Tetrachloroethene
0.10 0.15 Not Detected Not DetectedChlorobenzene
0.10 0.15 0.20 0.30Ethyl Benzene
0.10 0.14 0.60 0.85m,p-Xylene
0.10 0.15 0.18 0.27o-Xylene
0.10 0.16 Not Detected Not DetectedStyrene
0.10 0.17 Not Detected Not DetectedPropylbenzene
0.10 0.19 0.24 0.461,4-Dichlorobenzene
0.10 0.40 Not Detected Not DetectedNaphthalene
0.10 0.16 Not Detected C Not Detected C1,1-Dichloroethane
0.40 0.52 Not Detected C Not Detected C1,1-Dichloroethene
0.10 0.16 Not Detected C Not Detected Ccis-1,2-Dichloroethene
0.10 0.16 Not Detected C Not Detected C1,1,2,2-Tetrachloroethane
0.20 0.33 Not Detected C Not Detected Ctrans-1,2-Dichloroethene
0.10 0.15 Not Detected C Not Detected C1,1,2-Trichloroethane
0.10 0.20 0.20 0.391,2,4-Trimethylbenzene
0.10 0.17 Not Detected C Not Detected C1,2-Dichlorobenzene
0.10 0.19 Not Detected C Not Detected C1,3,5-Trimethylbenzene
0.10 0.17 Not Detected C Not Detected C1,3-Dichlorobenzene
C = Estimated concentration due to calculated sampling rate.
Temperature = 77.0F , duration time = 10059 minutes.
Container Type: Radiello 130 (Solvent)
Limits%RecoverySurrogates
Method
Page 10 of 28
Client Sample ID: 571-RES-02_20231205
Lab ID#: 2312126-02A
VOCS BY PASSIVE SAMPLER - GC/MS
18120719simFile Name:
Dil. Factor:1.00
Date of Collection: 12/5/23 12:44:00 PM
Date of Analysis: 12/7/23 04:07 PM
Date of Extraction: 12/7/23
Limits%RecoverySurrogates
Method
103 70-130Toluene-d8
Page 11 of 28
Client Sample ID: 571-RES-03_20231205
Lab ID#: 2312126-03A
VOCS BY PASSIVE SAMPLER - GC/MS
18120720simFile Name:
Dil. Factor:1.00
Date of Collection: 12/5/23 12:47:00 PM
Date of Analysis: 12/7/23 04:34 PM
Date of Extraction: 12/7/23
(ug/m3)(ug)(ug/m3)(ug)Compound
AmountAmountRpt. LimitRpt. Limit
1.0 0.97 4.9 4.8Ethanol
0.10 0.15 Not Detected Not DetectedMethyl tert-butyl ether
0.10 0.15 0.29 0.44Hexane
0.40 0.51 Not Detected Not DetectedEthyl Acetate
0.20 0.25 1.0 1.32-Butanone (Methyl Ethyl Ketone)
0.10 0.13 Not Detected Not DetectedChloroform
0.10 0.16 Not Detected Not Detected1,1,1-Trichloroethane
0.10 0.18 Not Detected Not DetectedCyclohexane
0.10 0.15 0.11 0.17Carbon Tetrachloride
0.40 0.50 1.1 1.4Benzene
0.10 0.13 Not Detected Not Detected1,2-Dichloroethane
0.10 0.17 0.16 0.27Heptane
0.10 0.14 Not Detected Not DetectedTrichloroethene
0.20 0.30 Not Detected Not Detected4-Methyl-2-pentanone
0.10 0.13 1.1 1.5Toluene
0.10 0.17 0.16 0.27Tetrachloroethene
0.10 0.15 Not Detected Not DetectedChlorobenzene
0.10 0.15 0.17 0.25Ethyl Benzene
0.10 0.14 0.50 0.71m,p-Xylene
0.10 0.15 0.14 0.22o-Xylene
0.10 0.16 Not Detected Not DetectedStyrene
0.10 0.17 Not Detected Not DetectedPropylbenzene
0.10 0.19 0.21 0.411,4-Dichlorobenzene
0.10 0.40 Not Detected Not DetectedNaphthalene
0.10 0.16 Not Detected C Not Detected C1,1-Dichloroethane
0.40 0.52 Not Detected C Not Detected C1,1-Dichloroethene
0.10 0.16 Not Detected C Not Detected Ccis-1,2-Dichloroethene
0.10 0.16 Not Detected C Not Detected C1,1,2,2-Tetrachloroethane
0.20 0.33 Not Detected C Not Detected Ctrans-1,2-Dichloroethene
0.10 0.15 Not Detected C Not Detected C1,1,2-Trichloroethane
0.10 0.20 0.13 0.261,2,4-Trimethylbenzene
0.10 0.17 Not Detected C Not Detected C1,2-Dichlorobenzene
0.10 0.19 Not Detected C Not Detected C1,3,5-Trimethylbenzene
0.10 0.17 Not Detected C Not Detected C1,3-Dichlorobenzene
C = Estimated concentration due to calculated sampling rate.
Temperature = 77.0F , duration time = 10071 minutes.
Container Type: Radiello 130 (Solvent)
Limits%RecoverySurrogates
Method
Page 12 of 28
Client Sample ID: 571-RES-03_20231205
Lab ID#: 2312126-03A
VOCS BY PASSIVE SAMPLER - GC/MS
18120720simFile Name:
Dil. Factor:1.00
Date of Collection: 12/5/23 12:47:00 PM
Date of Analysis: 12/7/23 04:34 PM
Date of Extraction: 12/7/23
Limits%RecoverySurrogates
Method
101 70-130Toluene-d8
Page 13 of 28
Client Sample ID: 571-RES-04_20231205
Lab ID#: 2312126-04A
VOCS BY PASSIVE SAMPLER - GC/MS
18120721simFile Name:
Dil. Factor:1.00
Date of Collection: 12/5/23 12:34:00 PM
Date of Analysis: 12/7/23 05:01 PM
Date of Extraction: 12/7/23
(ug/m3)(ug)(ug/m3)(ug)Compound
AmountAmountRpt. LimitRpt. Limit
1.0 0.97 Not Detected Not DetectedEthanol
0.10 0.15 Not Detected Not DetectedMethyl tert-butyl ether
0.10 0.15 Not Detected Not DetectedHexane
0.40 0.51 Not Detected Not DetectedEthyl Acetate
0.20 0.25 Not Detected Not Detected2-Butanone (Methyl Ethyl Ketone)
0.10 0.13 Not Detected Not DetectedChloroform
0.10 0.16 Not Detected Not Detected1,1,1-Trichloroethane
0.10 0.18 Not Detected Not DetectedCyclohexane
0.10 0.15 0.13 0.19Carbon Tetrachloride
0.40 0.49 Not Detected Not DetectedBenzene
0.10 0.13 Not Detected Not Detected1,2-Dichloroethane
0.10 0.17 Not Detected Not DetectedHeptane
0.10 0.14 0.20 0.29Trichloroethene
0.20 0.30 Not Detected Not Detected4-Methyl-2-pentanone
0.10 0.13 0.25 0.34Toluene
0.10 0.17 0.81 1.4Tetrachloroethene
0.10 0.14 Not Detected Not DetectedChlorobenzene
0.10 0.14 Not Detected Not DetectedEthyl Benzene
0.10 0.14 Not Detected Not Detectedm,p-Xylene
0.10 0.15 Not Detected Not Detectedo-Xylene
0.10 0.16 Not Detected Not DetectedStyrene
0.10 0.17 Not Detected Not DetectedPropylbenzene
0.10 0.19 Not Detected Not Detected1,4-Dichlorobenzene
0.10 0.40 Not Detected Not DetectedNaphthalene
0.10 0.16 Not Detected C Not Detected C1,1-Dichloroethane
0.40 0.52 Not Detected C Not Detected C1,1-Dichloroethene
0.10 0.16 Not Detected C Not Detected Ccis-1,2-Dichloroethene
0.10 0.16 Not Detected C Not Detected C1,1,2,2-Tetrachloroethane
0.20 0.33 Not Detected C Not Detected Ctrans-1,2-Dichloroethene
0.10 0.15 Not Detected C Not Detected C1,1,2-Trichloroethane
0.10 0.20 Not Detected Not Detected1,2,4-Trimethylbenzene
0.10 0.17 Not Detected C Not Detected C1,2-Dichlorobenzene
0.10 0.19 Not Detected C Not Detected C1,3,5-Trimethylbenzene
0.10 0.17 Not Detected C Not Detected C1,3-Dichlorobenzene
C = Estimated concentration due to calculated sampling rate.
Temperature = 77.0F , duration time = 10118 minutes.
Container Type: Radiello 130 (Solvent)
Limits%RecoverySurrogates
Method
Page 14 of 28
Client Sample ID: 571-RES-04_20231205
Lab ID#: 2312126-04A
VOCS BY PASSIVE SAMPLER - GC/MS
18120721simFile Name:
Dil. Factor:1.00
Date of Collection: 12/5/23 12:34:00 PM
Date of Analysis: 12/7/23 05:01 PM
Date of Extraction: 12/7/23
Limits%RecoverySurrogates
Method
102 70-130Toluene-d8
Page 15 of 28
Client Sample ID: 571-RES-05_20231205
Lab ID#: 2312126-05A
VOCS BY PASSIVE SAMPLER - GC/MS
18120722simFile Name:
Dil. Factor:1.00
Date of Collection: 12/5/23 12:25:00 PM
Date of Analysis: 12/7/23 05:29 PM
Date of Extraction: 12/7/23
(ug/m3)(ug)(ug/m3)(ug)Compound
AmountAmountRpt. LimitRpt. Limit
1.0 0.97 Not Detected Not DetectedEthanol
0.10 0.15 Not Detected Not DetectedMethyl tert-butyl ether
0.10 0.15 0.10 0.16Hexane
0.40 0.51 Not Detected Not DetectedEthyl Acetate
0.20 0.25 Not Detected Not Detected2-Butanone (Methyl Ethyl Ketone)
0.10 0.13 Not Detected Not DetectedChloroform
0.10 0.16 Not Detected Not Detected1,1,1-Trichloroethane
0.10 0.18 Not Detected Not DetectedCyclohexane
0.10 0.15 0.13 0.19Carbon Tetrachloride
0.40 0.50 Not Detected Not DetectedBenzene
0.10 0.13 Not Detected Not Detected1,2-Dichloroethane
0.10 0.17 Not Detected Not DetectedHeptane
0.10 0.14 Not Detected Not DetectedTrichloroethene
0.20 0.30 Not Detected Not Detected4-Methyl-2-pentanone
0.10 0.13 0.29 0.38Toluene
0.10 0.17 0.33 0.55Tetrachloroethene
0.10 0.14 Not Detected Not DetectedChlorobenzene
0.10 0.14 Not Detected Not DetectedEthyl Benzene
0.10 0.14 0.12 0.17m,p-Xylene
0.10 0.15 Not Detected Not Detectedo-Xylene
0.10 0.16 Not Detected Not DetectedStyrene
0.10 0.17 Not Detected Not DetectedPropylbenzene
0.10 0.19 Not Detected Not Detected1,4-Dichlorobenzene
0.10 0.40 Not Detected Not DetectedNaphthalene
0.10 0.16 Not Detected C Not Detected C1,1-Dichloroethane
0.40 0.52 Not Detected C Not Detected C1,1-Dichloroethene
0.10 0.16 Not Detected C Not Detected Ccis-1,2-Dichloroethene
0.10 0.16 Not Detected C Not Detected C1,1,2,2-Tetrachloroethane
0.20 0.33 Not Detected C Not Detected Ctrans-1,2-Dichloroethene
0.10 0.15 Not Detected C Not Detected C1,1,2-Trichloroethane
0.10 0.20 Not Detected Not Detected1,2,4-Trimethylbenzene
0.10 0.17 Not Detected C Not Detected C1,2-Dichlorobenzene
0.10 0.19 Not Detected C Not Detected C1,3,5-Trimethylbenzene
0.10 0.17 Not Detected C Not Detected C1,3-Dichlorobenzene
C = Estimated concentration due to calculated sampling rate.
Temperature = 77.0F , duration time = 10095 minutes.
Container Type: Radiello 130 (Solvent)
Limits%RecoverySurrogates
Method
Page 16 of 28
Client Sample ID: 571-RES-05_20231205
Lab ID#: 2312126-05A
VOCS BY PASSIVE SAMPLER - GC/MS
18120722simFile Name:
Dil. Factor:1.00
Date of Collection: 12/5/23 12:25:00 PM
Date of Analysis: 12/7/23 05:29 PM
Date of Extraction: 12/7/23
Limits%RecoverySurrogates
Method
102 70-130Toluene-d8
Page 17 of 28
Client Sample ID: 571-RES-06_20231205
Lab ID#: 2312126-06A
VOCS BY PASSIVE SAMPLER - GC/MS
18120723simFile Name:
Dil. Factor:1.00
Date of Collection: 12/5/23 12:32:00 PM
Date of Analysis: 12/7/23 05:56 PM
Date of Extraction: 12/7/23
(ug/m3)(ug)(ug/m3)(ug)Compound
AmountAmountRpt. LimitRpt. Limit
1.0 0.97 Not Detected Not DetectedEthanol
0.10 0.15 Not Detected Not DetectedMethyl tert-butyl ether
0.10 0.15 Not Detected Not DetectedHexane
0.40 0.51 Not Detected Not DetectedEthyl Acetate
0.20 0.25 Not Detected Not Detected2-Butanone (Methyl Ethyl Ketone)
0.10 0.13 Not Detected Not DetectedChloroform
0.10 0.16 Not Detected Not Detected1,1,1-Trichloroethane
0.10 0.18 Not Detected Not DetectedCyclohexane
0.10 0.15 0.12 0.18Carbon Tetrachloride
0.40 0.49 Not Detected Not DetectedBenzene
0.10 0.13 Not Detected Not Detected1,2-Dichloroethane
0.10 0.17 Not Detected Not DetectedHeptane
0.10 0.14 0.10 0.14Trichloroethene
0.20 0.29 Not Detected Not Detected4-Methyl-2-pentanone
0.10 0.13 0.25 0.33Toluene
0.10 0.17 0.42 0.71Tetrachloroethene
0.10 0.14 Not Detected Not DetectedChlorobenzene
0.10 0.14 Not Detected Not DetectedEthyl Benzene
0.10 0.14 Not Detected Not Detectedm,p-Xylene
0.10 0.15 Not Detected Not Detectedo-Xylene
0.10 0.16 Not Detected Not DetectedStyrene
0.10 0.17 Not Detected Not DetectedPropylbenzene
0.10 0.19 Not Detected Not Detected1,4-Dichlorobenzene
0.10 0.40 Not Detected Not DetectedNaphthalene
0.10 0.16 Not Detected C Not Detected C1,1-Dichloroethane
0.40 0.52 Not Detected C Not Detected C1,1-Dichloroethene
0.10 0.16 Not Detected C Not Detected Ccis-1,2-Dichloroethene
0.10 0.16 Not Detected C Not Detected C1,1,2,2-Tetrachloroethane
0.20 0.33 Not Detected C Not Detected Ctrans-1,2-Dichloroethene
0.10 0.15 Not Detected C Not Detected C1,1,2-Trichloroethane
0.10 0.20 Not Detected Not Detected1,2,4-Trimethylbenzene
0.10 0.17 Not Detected C Not Detected C1,2-Dichlorobenzene
0.10 0.19 Not Detected C Not Detected C1,3,5-Trimethylbenzene
0.10 0.17 Not Detected C Not Detected C1,3-Dichlorobenzene
C = Estimated concentration due to calculated sampling rate.
Temperature = 77.0F , duration time = 10122 minutes.
Container Type: Radiello 130 (Solvent)
Limits%RecoverySurrogates
Method
Page 18 of 28
Client Sample ID: 571-RES-06_20231205
Lab ID#: 2312126-06A
VOCS BY PASSIVE SAMPLER - GC/MS
18120723simFile Name:
Dil. Factor:1.00
Date of Collection: 12/5/23 12:32:00 PM
Date of Analysis: 12/7/23 05:56 PM
Date of Extraction: 12/7/23
Limits%RecoverySurrogates
Method
103 70-130Toluene-d8
Page 19 of 28
Client Sample ID: 571-RES-BKG_20231205
Lab ID#: 2312126-07A
VOCS BY PASSIVE SAMPLER - GC/MS
18120724simFile Name:
Dil. Factor:1.00
Date of Collection: 12/5/23 12:36:00 PM
Date of Analysis: 12/7/23 06:23 PM
Date of Extraction: 12/7/23
(ug/m3)(ug)(ug/m3)(ug)Compound
AmountAmountRpt. LimitRpt. Limit
1.0 0.97 Not Detected Not DetectedEthanol
0.10 0.15 Not Detected Not DetectedMethyl tert-butyl ether
0.10 0.15 0.10 0.15Hexane
0.40 0.51 Not Detected Not DetectedEthyl Acetate
0.20 0.25 Not Detected Not Detected2-Butanone (Methyl Ethyl Ketone)
0.10 0.13 Not Detected Not DetectedChloroform
0.10 0.16 Not Detected Not Detected1,1,1-Trichloroethane
0.10 0.18 Not Detected Not DetectedCyclohexane
0.10 0.15 0.10 0.15Carbon Tetrachloride
0.40 0.50 Not Detected Not DetectedBenzene
0.10 0.13 Not Detected Not Detected1,2-Dichloroethane
0.10 0.17 Not Detected Not DetectedHeptane
0.10 0.14 Not Detected Not DetectedTrichloroethene
0.20 0.30 Not Detected Not Detected4-Methyl-2-pentanone
0.10 0.13 0.23 0.31Toluene
0.10 0.17 Not Detected Not DetectedTetrachloroethene
0.10 0.14 Not Detected Not DetectedChlorobenzene
0.10 0.14 Not Detected Not DetectedEthyl Benzene
0.10 0.14 Not Detected Not Detectedm,p-Xylene
0.10 0.15 Not Detected Not Detectedo-Xylene
0.10 0.16 Not Detected Not DetectedStyrene
0.10 0.17 Not Detected Not DetectedPropylbenzene
0.10 0.19 Not Detected Not Detected1,4-Dichlorobenzene
0.10 0.40 Not Detected Not DetectedNaphthalene
0.10 0.16 Not Detected C Not Detected C1,1-Dichloroethane
0.40 0.52 Not Detected C Not Detected C1,1-Dichloroethene
0.10 0.16 Not Detected C Not Detected Ccis-1,2-Dichloroethene
0.10 0.16 Not Detected C Not Detected C1,1,2,2-Tetrachloroethane
0.20 0.33 Not Detected C Not Detected Ctrans-1,2-Dichloroethene
0.10 0.15 Not Detected C Not Detected C1,1,2-Trichloroethane
0.10 0.20 Not Detected Not Detected1,2,4-Trimethylbenzene
0.10 0.17 Not Detected C Not Detected C1,2-Dichlorobenzene
0.10 0.19 Not Detected C Not Detected C1,3,5-Trimethylbenzene
0.10 0.17 Not Detected C Not Detected C1,3-Dichlorobenzene
C = Estimated concentration due to calculated sampling rate.
Temperature = 77.0F , duration time = 10086 minutes.
Container Type: Radiello 130 (Solvent)
Limits%RecoverySurrogates
Method
Page 20 of 28
Client Sample ID: 571-RES-BKG_20231205
Lab ID#: 2312126-07A
VOCS BY PASSIVE SAMPLER - GC/MS
18120724simFile Name:
Dil. Factor:1.00
Date of Collection: 12/5/23 12:36:00 PM
Date of Analysis: 12/7/23 06:23 PM
Date of Extraction: 12/7/23
Limits%RecoverySurrogates
Method
100 70-130Toluene-d8
Page 21 of 28
Client Sample ID: DUP-RES_20231205
Lab ID#: 2312126-08A
VOCS BY PASSIVE SAMPLER - GC/MS
18120725simFile Name:
Dil. Factor:1.00
Date of Collection: 12/5/23 12:30:00 PM
Date of Analysis: 12/7/23 06:50 PM
Date of Extraction: 12/7/23
(ug/m3)(ug)(ug/m3)(ug)Compound
AmountAmountRpt. LimitRpt. Limit
1.0 0.97 Not Detected Not DetectedEthanol
0.10 0.15 Not Detected Not DetectedMethyl tert-butyl ether
0.10 0.15 Not Detected Not DetectedHexane
0.40 0.51 Not Detected Not DetectedEthyl Acetate
0.20 0.25 Not Detected Not Detected2-Butanone (Methyl Ethyl Ketone)
0.10 0.13 Not Detected Not DetectedChloroform
0.10 0.16 Not Detected Not Detected1,1,1-Trichloroethane
0.10 0.18 Not Detected Not DetectedCyclohexane
0.10 0.15 0.12 0.18Carbon Tetrachloride
0.40 0.49 Not Detected Not DetectedBenzene
0.10 0.13 Not Detected Not Detected1,2-Dichloroethane
0.10 0.17 Not Detected Not DetectedHeptane
0.10 0.14 Not Detected Not DetectedTrichloroethene
0.20 0.30 Not Detected Not Detected4-Methyl-2-pentanone
0.10 0.13 0.25 0.34Toluene
0.10 0.17 0.30 0.50Tetrachloroethene
0.10 0.14 Not Detected Not DetectedChlorobenzene
0.10 0.14 Not Detected Not DetectedEthyl Benzene
0.10 0.14 0.10 0.14m,p-Xylene
0.10 0.15 Not Detected Not Detectedo-Xylene
0.10 0.16 Not Detected Not DetectedStyrene
0.10 0.17 Not Detected Not DetectedPropylbenzene
0.10 0.19 Not Detected Not Detected1,4-Dichlorobenzene
0.10 0.40 Not Detected Not DetectedNaphthalene
0.10 0.16 Not Detected C Not Detected C1,1-Dichloroethane
0.40 0.52 Not Detected C Not Detected C1,1-Dichloroethene
0.10 0.16 Not Detected C Not Detected Ccis-1,2-Dichloroethene
0.10 0.16 Not Detected C Not Detected C1,1,2,2-Tetrachloroethane
0.20 0.33 Not Detected C Not Detected Ctrans-1,2-Dichloroethene
0.10 0.15 Not Detected C Not Detected C1,1,2-Trichloroethane
0.10 0.20 Not Detected Not Detected1,2,4-Trimethylbenzene
0.10 0.17 Not Detected C Not Detected C1,2-Dichlorobenzene
0.10 0.19 Not Detected C Not Detected C1,3,5-Trimethylbenzene
0.10 0.17 Not Detected C Not Detected C1,3-Dichlorobenzene
C = Estimated concentration due to calculated sampling rate.
Temperature = 77.0F , duration time = 10102 minutes.
Container Type: Radiello 130 (Solvent)
Limits%RecoverySurrogates
Method
Page 22 of 28
Client Sample ID: DUP-RES_20231205
Lab ID#: 2312126-08A
VOCS BY PASSIVE SAMPLER - GC/MS
18120725simFile Name:
Dil. Factor:1.00
Date of Collection: 12/5/23 12:30:00 PM
Date of Analysis: 12/7/23 06:50 PM
Date of Extraction: 12/7/23
Limits%RecoverySurrogates
Method
102 70-130Toluene-d8
Page 23 of 28
Client Sample ID: Lab Blank
Lab ID#: 2312126-09A
VOCS BY PASSIVE SAMPLER - GC/MS
18120705simFile Name:
Dil. Factor:1.00
Date of Collection: NA
Date of Analysis: 12/7/23 09:43 AM
Date of Extraction: 12/7/23
(ug/m3)(ug)(ug/m3)(ug)Compound
AmountAmountRpt. LimitRpt. Limit
1.0 0.97 Not Detected Not DetectedEthanol
0.10 0.15 Not Detected Not DetectedMethyl tert-butyl ether
0.10 0.15 Not Detected Not DetectedHexane
0.40 0.51 Not Detected Not DetectedEthyl Acetate
0.20 0.25 Not Detected Not Detected2-Butanone (Methyl Ethyl Ketone)
0.10 0.13 Not Detected Not DetectedChloroform
0.10 0.16 Not Detected Not Detected1,1,1-Trichloroethane
0.10 0.18 Not Detected Not DetectedCyclohexane
0.10 0.15 Not Detected Not DetectedCarbon Tetrachloride
0.40 0.49 Not Detected Not DetectedBenzene
0.10 0.13 Not Detected Not Detected1,2-Dichloroethane
0.10 0.17 Not Detected Not DetectedHeptane
0.10 0.14 Not Detected Not DetectedTrichloroethene
0.20 0.29 Not Detected Not Detected4-Methyl-2-pentanone
0.10 0.13 Not Detected Not DetectedToluene
0.10 0.17 Not Detected Not DetectedTetrachloroethene
0.10 0.14 Not Detected Not DetectedChlorobenzene
0.10 0.14 Not Detected Not DetectedEthyl Benzene
0.10 0.14 Not Detected Not Detectedm,p-Xylene
0.10 0.15 Not Detected Not Detectedo-Xylene
0.10 0.16 Not Detected Not DetectedStyrene
0.10 0.17 Not Detected Not DetectedPropylbenzene
0.10 0.19 Not Detected Not Detected1,4-Dichlorobenzene
0.10 0.40 Not Detected Not DetectedNaphthalene
0.10 0.16 Not Detected C Not Detected C1,1-Dichloroethane
0.40 0.52 Not Detected C Not Detected C1,1-Dichloroethene
0.10 0.16 Not Detected C Not Detected Ccis-1,2-Dichloroethene
0.10 0.16 Not Detected C Not Detected C1,1,2,2-Tetrachloroethane
0.20 0.33 Not Detected C Not Detected Ctrans-1,2-Dichloroethene
0.10 0.15 Not Detected C Not Detected C1,1,2-Trichloroethane
0.10 0.20 Not Detected Not Detected1,2,4-Trimethylbenzene
0.10 0.17 Not Detected C Not Detected C1,2-Dichlorobenzene
0.10 0.19 Not Detected C Not Detected C1,3,5-Trimethylbenzene
0.10 0.17 Not Detected C Not Detected C1,3-Dichlorobenzene
C = Estimated concentration due to calculated sampling rate.
Temperature = 77.0F , duration time = 10122 minutes.
Container Type: Radiello 130 (Solvent)
Limits%RecoverySurrogates
Method
Page 24 of 28
Client Sample ID: Lab Blank
Lab ID#: 2312126-09A
VOCS BY PASSIVE SAMPLER - GC/MS
18120705simFile Name:
Dil. Factor:1.00
Date of Collection: NA
Date of Analysis: 12/7/23 09:43 AM
Date of Extraction: 12/7/23
Limits%RecoverySurrogates
Method
101 70-130Toluene-d8
Page 25 of 28
Client Sample ID: CCV
Lab ID#: 2312126-10A
VOCS BY PASSIVE SAMPLER - GC/MS
18120702simFile Name:
Dil. Factor:1.00
Date of Collection: NA
Date of Analysis: 12/7/23 08:20 AM
Date of Extraction: NA
%RecoveryCompound
110Ethanol
99Methyl tert-butyl ether
102Hexane
110Ethyl Acetate
1022-Butanone (Methyl Ethyl Ketone)
92Chloroform
881,1,1-Trichloroethane
100Cyclohexane
90Carbon Tetrachloride
102Benzene
811,2-Dichloroethane
106Heptane
101Trichloroethene
1084-Methyl-2-pentanone
109Toluene
107Tetrachloroethene
109Chlorobenzene
109Ethyl Benzene
111m,p-Xylene
112o-Xylene
114Styrene
111Propylbenzene
1121,4-Dichlorobenzene
109Naphthalene
951,1-Dichloroethane
991,1-Dichloroethene
98cis-1,2-Dichloroethene
1091,1,2,2-Tetrachloroethane
100trans-1,2-Dichloroethene
1031,1,2-Trichloroethane
1161,2,4-Trimethylbenzene
1121,2-Dichlorobenzene
1141,3,5-Trimethylbenzene
1121,3-Dichlorobenzene
Container Type: NA - Not Applicable
Limits%RecoverySurrogates
Method
101 70-130Toluene-d8
Page 26 of 28
Client Sample ID: LCS
Lab ID#: 2312126-11A
VOCS BY PASSIVE SAMPLER - GC/MS
18120703simFile Name:
Dil. Factor:1.00
Date of Collection: NA
Date of Analysis: 12/7/23 08:48 AM
Date of Extraction: 12/7/23
Limits%RecoveryCompound
Method
65 50-130Ethanol
107 70-130Methyl tert-butyl ether
110 70-130Hexane
112 70-130Ethyl Acetate
94 70-1302-Butanone (Methyl Ethyl Ketone)
91 70-130Chloroform
92 70-1301,1,1-Trichloroethane
111 70-130Cyclohexane
93 70-130Carbon Tetrachloride
105 70-130Benzene
80 70-1301,2-Dichloroethane
114 70-130Heptane
104 70-130Trichloroethene
107 70-1304-Methyl-2-pentanone
108 70-130Toluene
106 70-130Tetrachloroethene
101 70-130Chlorobenzene
111 70-130Ethyl Benzene
108 70-130m,p-Xylene
102 70-130o-Xylene
68 20-100Styrene
114 70-130Propylbenzene
87 50-1101,4-Dichlorobenzene
14 5-80Naphthalene
99 70-1301,1-Dichloroethane
109 70-1301,1-Dichloroethene
98 70-130cis-1,2-Dichloroethene
92 70-1301,1,2,2-Tetrachloroethane
105 70-130trans-1,2-Dichloroethene
98 70-1301,1,2-Trichloroethane
104 70-1301,2,4-Trimethylbenzene
81 50-1101,2-Dichlorobenzene
112 70-1301,3,5-Trimethylbenzene
92 50-1101,3-Dichlorobenzene
Container Type: NA - Not Applicable
Limits%RecoverySurrogates
Method
104 70-130Toluene-d8
Page 27 of 28
Client Sample ID: LCSD
Lab ID#: 2312126-11AA
VOCS BY PASSIVE SAMPLER - GC/MS
18120704simFile Name:
Dil. Factor:1.00
Date of Collection: NA
Date of Analysis: 12/7/23 09:16 AM
Date of Extraction: 12/7/23
Limits%RecoveryCompound
Method
63 50-130Ethanol
109 70-130Methyl tert-butyl ether
110 70-130Hexane
112 70-130Ethyl Acetate
95 70-1302-Butanone (Methyl Ethyl Ketone)
91 70-130Chloroform
92 70-1301,1,1-Trichloroethane
112 70-130Cyclohexane
93 70-130Carbon Tetrachloride
106 70-130Benzene
80 70-1301,2-Dichloroethane
114 70-130Heptane
105 70-130Trichloroethene
106 70-1304-Methyl-2-pentanone
108 70-130Toluene
106 70-130Tetrachloroethene
100 70-130Chlorobenzene
110 70-130Ethyl Benzene
107 70-130m,p-Xylene
101 70-130o-Xylene
68 20-100Styrene
112 70-130Propylbenzene
85 50-1101,4-Dichlorobenzene
12 5-80Naphthalene
100 70-1301,1-Dichloroethane
110 70-1301,1-Dichloroethene
100 70-130cis-1,2-Dichloroethene
91 70-1301,1,2,2-Tetrachloroethane
107 70-130trans-1,2-Dichloroethene
98 70-1301,1,2-Trichloroethane
100 70-1301,2,4-Trimethylbenzene
80 50-1101,2-Dichlorobenzene
110 70-1301,3,5-Trimethylbenzene
90 50-1101,3-Dichlorobenzene
Container Type: NA - Not Applicable
Limits%RecoverySurrogates
Method
104 70-130Toluene-d8
Page 28 of 28

Appendix C
North Carolina Department of Environmental
Quality Risk Calculations

Version Date:
Basis:
Site Name:
Site Address:
DEQ Section:
Site ID:
Exposure Unit ID:
Submittal Date:
Reviewed By:
1/4/2024
Prepared By:Erin Greene
Kyle Church
Mike Dail
32322 Nanny Drive - Crawlspace (571-RES-01)
North Carolina Department of Environmental Quality
Risk Calculator
Albemarle Dump
Nanny Drive, Albemarle NC
DWM Special Remediation Branch: Pre-Regulatory Landfill Unit
NONCD0000571
July 2023
May 2023 EPA RSL Table
North Carolina DEQ Risk Calculator
Table of Contents
Version Date: July 2023
Basis: May 2023 EPA RSL Table
Site ID: NONCD0000571
Exposure Unit ID: 32322 Nanny Drive - Crawlspace (571-RES-01)
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
TOC
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: July 2023
Basis: May 2023 EPA RSL Table
Site ID: NONCD0000571
Exposure Unit ID: 32322 Nanny Drive - Crawlspace (571-RES-01)
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 Factors and Target Risks
Version Date: July 2023
Basis: May 2023 EPA RSL Table
Site ID: NONCD0000571
Exposure Parameter Site Specific Value Justification
Target Cancer Risk (individual) 1.0E-06
Target Cancer Risk (cumulative) 1.0E-04
Target Hazard Index (individual) 2.0E-01
Target Hazard Index (cumulative) 1.0E+00
Lifetime (LT) (years)70
Body Weight (BW) (kg) 15
Exposure Duration (ED) (yr) 6
Exposure Frequency (EF) (d/yr) 350
Exposure Time (ET) (hr/d) 24
Skin Surface Area - Soil Exposure (SAs) (cm2)2373
Soil Adherence Factor (AF) (mg/cm2)0.2
Soil Ingestion Rate (IRS) (mg/day) 200
Skin Surface Area - Water Exposure (SAw) (cm2)6365
Water Ingestion Rate (IRW) (L/d) 0.78
Water Exposure Time (ETevent) (hr/event)0.54
Water Event Frequency (EV) (events/day) 1
Lifetime (LT) (years)70
Body Weight (BW) (kg) 80
Exposure Duration (ED) (yr) 20
Exposure Frequency (EF) (d/yr) 350
Exposure Time (ET) (hr/d) 24
Skin Surface Area - Soil Exposure (SAs) (cm2)6032
Soil Adherence Factor (AF) (mg/cm2)0.07
Soil Ingestion Rate (IRS) (mg/day) 100
Skin Surface Area - Water Exposure (SAw) (cm2)19652
Water Ingestion Rate (IRW) (L/d) 2.5
Water Exposure Time (ETevent) (hr/event)0.71
Water Event Frequency (EV) (events/day) 1
Lifetime (LT) (years)70
Body Weight (BW) (kg) 80
Exposure Duration (ED) (yr) 25
Exposure Frequency (EF) (d/yr) 250
Exposure Time (ET) (hr/d) 8
Skin Surface Area - Soil Exposure (SAs) (cm2)3527
Soil Adherence Factor (AF) (mg/cm2)0.12
Soil Ingestion Rate (IR) (mg/day) 100
Skin Surface Area - Water Exposure (SAw) (cm2)19652
Water Ingestion Rate (IRW) (L/d) 0.83
Water Exposure Time (ETevent) (hr/event)0.67
Water Event Frequency (EV) (events/day) 1
Lifetime (LT) (years)70
Body Weight (BW) (kg) 80
Working Weeks (EW) (wk/yr) 50
Exposure Duration (ED) (yr) 1
Exposure Frequency (EF) (d/yr) 250
Exposure Time (ET) (hr/d) 8
Skin Surface Area - Soil Exposure (SAs) (cm2)3527
Soil Adherence Factor (AF) (mg/cm2)0.3
Soil Ingestion Rate (IR) (mg/day) 330
1
70
80
330
1
250
8
3527
0.3
50
100
19652
2.5
0.71
1
20
350
24
6032
0.07
0.54
1
70
80
2373
0.2
200
6365
0.78
Input Form 1B
Exposure Unit ID: 32322 Nanny Drive - Crawlspace (571-RES-01)
Residential Child
General
Residential Adult
Default Value
1.0E-06
1.0E-04
2.0E-01
1.0E+00
70
15
6
350
24
Non-Residential Worker
Construction Worker
70
80
25
250
8
3527
0.12
100
19652
0.83
0.67
North Carolina DEQ Risk Calculator
Exposure Factors and Target Risks
Version Date: July 2023
Basis: May 2023 EPA RSL Table
Site ID: NONCD0000571
Exposure Parameter Site Specific Value Justification
Input Form 1B
Exposure Unit ID: 32322 Nanny Drive - Crawlspace (571-RES-01)
Default Value
Recreator Trespasser
Lifetime (LT) (years)70 NA 70
Averaging Time (AT) (days/yr) 365 NA 365
Body Weight (BW) (kg) 15 NA 15
Exposure Duration 0-2 (ED) (yr) 2 NA 2
Exposure Duration 2-6 (ED) (yr) 4 NA 4
Exposure Frequency (EF) (d/yr) 195 NA 195
Exposure Time (ET) (hr/d) 2 NA 2
Skin Surface Area - Soil Exposure (SAs) (cm2)2373 NA 2373
Soil Adherence Factor (AF) (mg/cm2)0.2 NA 0.2
Soil Ingestion Rate (IRS) (mg/day) 200 NA 200
Skin Surface Area - Water Exposure (SAw) (cm2)6365 NA 6365
Water Ingestion Rate (IRW) (L/hr) 0.12 NA 0.12
Water Exposure Time (ETevent) (hr/event)2 NA 2
Water Event Frequency (EV) (events/day) 1 NA 1
Recreator Trespasser
Lifetime (LT) (years)70 70 70
Body Weight (BW) (kg) 80 45 80
Exposure Duration 6-16 (ED) (yr) 10 10 10
Exposure Duration 16-26 (ED) (yr) 10 0 10
Exposure Frequency (EF) (d/yr) 195 90 195
Exposure Time (ET) (hr/d) 2 2 2
Skin Surface Area - Soil Exposure (SAs) (cm2)6032 6032 6032
Soil Adherence Factor (AF) (mg/cm2)0.07 0.2 0.07
Soil Ingestion Rate (IRS) (mg/day) 100 200 100
Skin Surface Area - Water Exposure (SAw) (cm2)19652 19652 19652
Water Ingestion Rate (IRW) (L/hr) 0.11 0.11 0.11
Water Exposure Time (ETevent) (hr/event)2 2 2
Water Event Frequency (EV) (events/day) 1 1 1
User Defined Child
User Defined Adult
North Carolina DEQ Risk Calculator
Exposure Point Concentrations
Version Date: July 2023
Basis: May 2023 EPA RSL Table
Site ID: NONCD0000571
Exposure Unit ID: 32322 Nanny Drive - Crawlspace (571-RES-01)
Description of Exposure Point Concentration Selection:
Exposure Point
Concentration
(ug/m3)
Notes: CAS Number Chemical
Minimum
Concentration
(Qualifier)
Maximum
Concentration
(Qualifier)
Units
Location of
Maximum
Concentration
Detection
Frequency
Range of
Detection
Limits
Concentration
Used for
Screening
Background
Value
Screening
Toxicity Value
(Screening
Level) (n/c)
Potential
ARAR/TBC
Value
Potential
ARAR/TBC
Source
COPC Flag
(Y/N)
Rationale for
Selection or
Deletion
1.6 71-43-2 Benzene ug/m3
0.18 56-23-5 Carbon Tetrachloride ug/m3
0.48 106-46-7 Dichlorobenzene, 1,4-ug/m3
0.3 100-41-4 Ethylbenzene ug/m3
0.33 142-82-5 Heptane, N-ug/m3
0.59 110-54-3 Hexane, N-ug/m3
1.4 78-93-3 Methyl Ethyl Ketone (2-Butanone)ug/m3
0.28 127-18-4 Tetrachloroethylene ug/m3
1.8 108-88-3 Toluene ug/m3
0.32 95-63-6 Trimethylbenzene, 1,2,4-ug/m3
0.28 95-47-6 Xylene, o-ug/m3
0.86 106-42-3 Xylene, p-ug/m3
Input Form 2E
Indoor Air Exposure Point Concentration Table
Note: Chemicals highlighted in orange are non-volatile chemicals. Risks are calculated for these chemicals if indoor air concentrations are entered and indoor air screening levels have been established, but it should be noted that detections of these chemicals are likely not associated with vapor intrusion.
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
Sample ID: 571-RES-01_20231205
32322 Nanny Drive - Carter
Crawlspace Passive Sampler
North Carolina DEQ Risk Calculator
Risk for Individual Pathways Output Form 1A
Version Date: July 2023
Basis: May 2023 EPA RSL Table
Site ID: NONCD0000571
Exposure Unit ID: 32322 Nanny Drive - Crawlspace (571-RES-01)
Receptor Pathway Carcinogenic
Ris Hazard Index Risk exceeded?
Soil NC NC NC
Groundwater Use* NC NC NC
Soil NC NC NC
Groundwater Use* NC NC NC
Construction Worker Soil NC NC NC
Soil NC NC NC
Surface Water* NC NC NC
Receptor Pathway Carcinogenic
Ris Hazard Index Risk exceeded?
Groundwater to Indoor Air NC NC NC
Soil Gas to Indoor Air NC NC NC
Indoor Air 7.0E-06 7.9E-02 NO
Groundwater to Indoor Air NC NC NC
Soil Gas to Indoor Air NC NC NC
Indoor Air 1.6E-06 1.9E-02 NO
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
DEQ Risk Calculator - Vapor Intrusion - Resident Indoor Air
Version Date: July 2023
Basis: May 2023 EPA RSL Table
Site ID: NONCD0000571
Exposure Unit ID: 32322 Nanny Drive - Crawlspace (571-RES-01)
CAS # Chemical Name:
Indoor Air
Concentration
(ug/m3)
Target Indoor
Air Conc. for
Carcinogens @
TCR = 1E-06
Target Indoor Air
Conc. for Non-
Carcinogens @
THQ = 0.2
Calculated
Carcinogenic
Risk
Calculated
Non-
Carcinogenic
Hazard
Quotient
71-43-2 Benzene 1.6 3.6E-01 6.3E+00 4.4E-06 5.1E-02
56-23-5 Carbon Tetrachloride 0.18 4.7E-01 2.1E+01 3.8E-07 1.7E-03
106-46-7 Dichlorobenzene, 1,4- 0.48 2.6E-01 1.7E+02 1.9E-06 5.8E-04
100-41-4 Ethylbenzene 0.3 1.1E+00 2.1E+02 2.7E-07 2.9E-04
142-82-5 Heptane, N- 0.33 - 8.3E+01 7.9E-04
110-54-3 Hexane, N- 0.59 - 1.5E+02 8.1E-04
78-93-3 Methyl Ethyl Ketone (2-Butanone) 1.4 - 1.0E+03 2.7E-04
127-18-4 Tetrachloroethylene 0.28 1.1E+01 8.3E+00 2.6E-08 6.7E-03
108-88-3 Toluene 1.8 - 1.0E+03 3.5E-04
95-63-6 Trimethylbenzene, 1,2,4- 0.32 - 1.3E+01 5.1E-03
95-47-6 Xylene, o- 0.28 - 2.1E+01 2.7E-03
106-42-3 Xylene, p- 0.86 - 2.1E+01 8.2E-03
Cumulative: 7.0E-06 7.9E-02
All concentrations are in ug/m3
Output Form 3C
** - Note that the EPA has no consensus on reference dose or cancer slope factor values for lead, therefore it is not possible to calculate
carcinogenic risk or hazard quotient. Lead concentrations are compared to the National Ambient Air Quality Standard of 0.15 μg/m3.
Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Risks are calculated for these values if
indoor air concentrations are entered and indoor air screening levels have been established, but it should be noted that detections of these chemicals
are likely not associated with vapor intrusion.
North Carolina DEQ Risk Calculator
DEQ Risk Calculator - Vapor Intrusion - Non-Residential Worker Indoor Air
Version Date: July 2023
Basis: May 2023 EPA RSL Table
Site ID: NONCD0000571
Exposure Unit ID: 32322 Nanny Drive - Crawlspace (571-RES-01)
CAS # Chemical Name:
Indoor Air
Concentration
(ug/m3)
Target Indoor
Air Conc. for
Carcinogens @
TCR = 1E-06
Target Indoor Air
Conc. for Non-
Carcinogens @
THQ = 0.2
Calculated
Carcinogenic
Risk
Calculated
Non-
Carcinogenic
Hazard
Quotient
71-43-2 Benzene 1.6 1.6E+00 2.6E+01 1.0E-06 1.2E-02
56-23-5 Carbon Tetrachloride 0.18 2.0E+00 8.8E+01 8.8E-08 4.1E-04
106-46-7 Dichlorobenzene, 1,4- 0.48 1.1E+00 7.0E+02 4.3E-07 1.4E-04
100-41-4 Ethylbenzene 0.3 4.9E+00 8.8E+02 6.1E-08 6.8E-05
142-82-5 Heptane, N- 0.33 - 3.5E+02 1.9E-04
110-54-3 Hexane, N- 0.59 - 6.1E+02 1.9E-04
78-93-3 Methyl Ethyl Ketone (2-Butanone) 1.4 - 4.4E+03 6.4E-05
127-18-4 Tetrachloroethylene 0.28 4.7E+01 3.5E+01 5.9E-09 1.6E-03
108-88-3 Toluene 1.8 - 4.4E+03 8.2E-05
95-63-6 Trimethylbenzene, 1,2,4- 0.32 - 5.3E+01 1.2E-03
95-47-6 Xylene, o- 0.28 - 8.8E+01 6.4E-04
106-42-3 Xylene, p- 0.86 - 8.8E+01 2.0E-03
Cumulative: 1.6E-06 1.9E-02
All concentrations are in u /3
Output Form 3F
** - Note that the EPA has no consensus on reference dose or cancer slope factor values for lead, therefore it is not possible to calculate carcinogenic risk
or hazard quotient. Lead concentrations are compared to the National Ambient Air Quality Standard of 0.15 μg/m3.
Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Risks are calculated for these values if
indoor air concentrations are entered and indoor air screening levels have been established, but it should be noted that detections of these chemicals are
likely not associated with vapor intrusion.
North Carolina DEQ Risk Calculator
Version Date:
Basis:
Site Name:
Site Address:
DEQ Section:
Site ID:
Exposure Unit ID:
Submittal Date:
Reviewed By:
1/4/2024
Prepared By:Erin Greene
Kyle Church
Mike Dail
32322 Nanny Drive - Crawlspace (571-RES-02)
North Carolina Department of Environmental Quality
Risk Calculator
Albemarle Dump
Nanny Drive, Albemarle NC
DWM Special Remediation Branch: Pre-Regulatory Landfill Unit
NONCD0000571
July 2023
May 2023 EPA RSL Table
North Carolina DEQ Risk Calculator
Table of Contents
Version Date: July 2023
Basis: May 2023 EPA RSL Table
Site ID: NONCD0000571
Exposure Unit ID: 32322 Nanny Drive - Crawlspace (571-RES-02)
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
TOC
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: July 2023
Basis: May 2023 EPA RSL Table
Site ID: NONCD0000571
Exposure Unit ID: 32322 Nanny Drive - Crawlspace (571-RES-02)
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 Factors and Target Risks
Version Date: July 2023
Basis: May 2023 EPA RSL Table
Site ID: NONCD0000571
Exposure Parameter Site Specific Value Justification
Target Cancer Risk (individual) 1.0E-06
Target Cancer Risk (cumulative) 1.0E-04
Target Hazard Index (individual) 2.0E-01
Target Hazard Index (cumulative) 1.0E+00
Lifetime (LT) (years)70
Body Weight (BW) (kg) 15
Exposure Duration (ED) (yr) 6
Exposure Frequency (EF) (d/yr) 350
Exposure Time (ET) (hr/d) 24
Skin Surface Area - Soil Exposure (SAs) (cm2)2373
Soil Adherence Factor (AF) (mg/cm2)0.2
Soil Ingestion Rate (IRS) (mg/day) 200
Skin Surface Area - Water Exposure (SAw) (cm2)6365
Water Ingestion Rate (IRW) (L/d) 0.78
Water Exposure Time (ETevent) (hr/event)0.54
Water Event Frequency (EV) (events/day) 1
Lifetime (LT) (years)70
Body Weight (BW) (kg) 80
Exposure Duration (ED) (yr) 20
Exposure Frequency (EF) (d/yr) 350
Exposure Time (ET) (hr/d) 24
Skin Surface Area - Soil Exposure (SAs) (cm2)6032
Soil Adherence Factor (AF) (mg/cm2)0.07
Soil Ingestion Rate (IRS) (mg/day) 100
Skin Surface Area - Water Exposure (SAw) (cm2)19652
Water Ingestion Rate (IRW) (L/d) 2.5
Water Exposure Time (ETevent) (hr/event)0.71
Water Event Frequency (EV) (events/day) 1
Lifetime (LT) (years)70
Body Weight (BW) (kg) 80
Exposure Duration (ED) (yr) 25
Exposure Frequency (EF) (d/yr) 250
Exposure Time (ET) (hr/d) 8
Skin Surface Area - Soil Exposure (SAs) (cm2)3527
Soil Adherence Factor (AF) (mg/cm2)0.12
Soil Ingestion Rate (IR) (mg/day) 100
Skin Surface Area - Water Exposure (SAw) (cm2)19652
Water Ingestion Rate (IRW) (L/d) 0.83
Water Exposure Time (ETevent) (hr/event)0.67
Water Event Frequency (EV) (events/day) 1
Lifetime (LT) (years)70
Body Weight (BW) (kg) 80
Working Weeks (EW) (wk/yr) 50
Exposure Duration (ED) (yr) 1
Exposure Frequency (EF) (d/yr) 250
Exposure Time (ET) (hr/d) 8
Skin Surface Area - Soil Exposure (SAs) (cm2)3527
Soil Adherence Factor (AF) (mg/cm2)0.3
Soil Ingestion Rate (IR) (mg/day) 330
1
70
80
330
1
250
8
3527
0.3
50
100
19652
2.5
0.71
1
20
350
24
6032
0.07
0.54
1
70
80
2373
0.2
200
6365
0.78
Input Form 1B
Exposure Unit ID: 32322 Nanny Drive - Crawlspace (571-RES-02)
Residential Child
General
Residential Adult
Default Value
1.0E-06
1.0E-04
2.0E-01
1.0E+00
70
15
6
350
24
Non-Residential Worker
Construction Worker
70
80
25
250
8
3527
0.12
100
19652
0.83
0.67
North Carolina DEQ Risk Calculator
Exposure Factors and Target Risks
Version Date: July 2023
Basis: May 2023 EPA RSL Table
Site ID: NONCD0000571
Exposure Parameter Site Specific Value Justification
Input Form 1B
Exposure Unit ID: 32322 Nanny Drive - Crawlspace (571-RES-02)
Default Value
Recreator Trespasser
Lifetime (LT) (years)70 NA 70
Averaging Time (AT) (days/yr) 365 NA 365
Body Weight (BW) (kg) 15 NA 15
Exposure Duration 0-2 (ED) (yr) 2 NA 2
Exposure Duration 2-6 (ED) (yr) 4 NA 4
Exposure Frequency (EF) (d/yr) 195 NA 195
Exposure Time (ET) (hr/d) 2 NA 2
Skin Surface Area - Soil Exposure (SAs) (cm2)2373 NA 2373
Soil Adherence Factor (AF) (mg/cm2)0.2 NA 0.2
Soil Ingestion Rate (IRS) (mg/day) 200 NA 200
Skin Surface Area - Water Exposure (SAw) (cm2)6365 NA 6365
Water Ingestion Rate (IRW) (L/hr) 0.12 NA 0.12
Water Exposure Time (ETevent) (hr/event)2 NA 2
Water Event Frequency (EV) (events/day) 1 NA 1
Recreator Trespasser
Lifetime (LT) (years)70 70 70
Body Weight (BW) (kg) 80 45 80
Exposure Duration 6-16 (ED) (yr) 10 10 10
Exposure Duration 16-26 (ED) (yr) 10 0 10
Exposure Frequency (EF) (d/yr) 195 90 195
Exposure Time (ET) (hr/d) 2 2 2
Skin Surface Area - Soil Exposure (SAs) (cm2)6032 6032 6032
Soil Adherence Factor (AF) (mg/cm2)0.07 0.2 0.07
Soil Ingestion Rate (IRS) (mg/day) 100 200 100
Skin Surface Area - Water Exposure (SAw) (cm2)19652 19652 19652
Water Ingestion Rate (IRW) (L/hr) 0.11 0.11 0.11
Water Exposure Time (ETevent) (hr/event)2 2 2
Water Event Frequency (EV) (events/day) 1 1 1
User Defined Child
User Defined Adult
North Carolina DEQ Risk Calculator
Exposure Point Concentrations
Version Date: July 2023
Basis: May 2023 EPA RSL Table
Site ID: NONCD0000571
Exposure Unit ID: 32322 Nanny Drive - Crawlspace (571-RES-02)
Description of Exposure Point Concentration Selection:
Exposure Point
Concentration
(ug/m3)
Notes: CAS Number Chemical
Minimum
Concentration
(Qualifier)
Maximum
Concentration
(Qualifier)
Units
Location of
Maximum
Concentration
Detection
Frequency
Range of
Detection
Limits
Concentration
Used for
Screening
Background
Value
Screening
Toxicity Value
(Screening
Level) (n/c)
Potential
ARAR/TBC
Value
Potential
ARAR/TBC
Source
COPC Flag
(Y/N)
Rationale for
Selection or
Deletion
1.5 71-43-2 Benzene ug/m3
0.2 56-23-5 Carbon Tetrachloride ug/m3
0.46 106-46-7 Dichlorobenzene, 1,4-ug/m3
0.3 100-41-4 Ethylbenzene ug/m3
0.34 142-82-5 Heptane, N-ug/m3
0.54 110-54-3 Hexane, N-ug/m3
1.2 78-93-3 Methyl Ethyl Ketone (2-Butanone)ug/m3
0.32 127-18-4 Tetrachloroethylene ug/m3
1.8 108-88-3 Toluene ug/m3
0.39 95-63-6 Trimethylbenzene, 1,2,4-ug/m3
0.27 95-47-6 Xylene, o-ug/m3
0.85 106-42-3 Xylene, p-ug/m3
Input Form 2E
Indoor Air Exposure Point Concentration Table
Note: Chemicals highlighted in orange are non-volatile chemicals. Risks are calculated for these chemicals if indoor air concentrations are entered and indoor air screening levels have been established, but it should be noted that detections of these chemicals are likely not associated with vapor intrusion.
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
Sample ID: 571-RES-02_20231205
32322 Nanny Drive - Carter
Crawlspace Passive Sampler
North Carolina DEQ Risk Calculator
Risk for Individual Pathways Output Form 1A
Version Date: July 2023
Basis: May 2023 EPA RSL Table
Site ID: NONCD0000571
Exposure Unit ID: 32322 Nanny Drive - Crawlspace (571-RES-02)
Receptor Pathway Carcinogenic
Ris Hazard Index Risk exceeded?
Soil NC NC NC
Groundwater Use* NC NC NC
Soil NC NC NC
Groundwater Use* NC NC NC
Construction Worker Soil NC NC NC
Soil NC NC NC
Surface Water* NC NC NC
Receptor Pathway Carcinogenic
Ris Hazard Index Risk exceeded?
Groundwater to Indoor Air NC NC NC
Soil Gas to Indoor Air NC NC NC
Indoor Air 6.7E-06 7.7E-02 NO
Groundwater to Indoor Air NC NC NC
Soil Gas to Indoor Air NC NC NC
Indoor Air 1.5E-06 1.8E-02 NO
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
DEQ Risk Calculator - Vapor Intrusion - Resident Indoor Air
Version Date: July 2023
Basis: May 2023 EPA RSL Table
Site ID: NONCD0000571
Exposure Unit ID: 32322 Nanny Drive - Crawlspace (571-RES-02)
CAS # Chemical Name:
Indoor Air
Concentration
(ug/m3)
Target Indoor
Air Conc. for
Carcinogens @
TCR = 1E-06
Target Indoor Air
Conc. for Non-
Carcinogens @
THQ = 0.2
Calculated
Carcinogenic
Risk
Calculated
Non-
Carcinogenic
Hazard
Quotient
71-43-2 Benzene 1.5 3.6E-01 6.3E+00 4.2E-06 4.8E-02
56-23-5 Carbon Tetrachloride 0.2 4.7E-01 2.1E+01 4.3E-07 1.9E-03
106-46-7 Dichlorobenzene, 1,4- 0.46 2.6E-01 1.7E+02 1.8E-06 5.5E-04
100-41-4 Ethylbenzene 0.3 1.1E+00 2.1E+02 2.7E-07 2.9E-04
142-82-5 Heptane, N- 0.34 - 8.3E+01 8.2E-04
110-54-3 Hexane, N- 0.54 - 1.5E+02 7.4E-04
78-93-3 Methyl Ethyl Ketone (2-Butanone) 1.2 - 1.0E+03 2.3E-04
127-18-4 Tetrachloroethylene 0.32 1.1E+01 8.3E+00 3.0E-08 7.7E-03
108-88-3 Toluene 1.8 - 1.0E+03 3.5E-04
95-63-6 Trimethylbenzene, 1,2,4- 0.39 - 1.3E+01 6.2E-03
95-47-6 Xylene, o- 0.27 - 2.1E+01 2.6E-03
106-42-3 Xylene, p- 0.85 - 2.1E+01 8.2E-03
Cumulative: 6.7E-06 7.7E-02
All concentrations are in ug/m3
Output Form 3C
** - Note that the EPA has no consensus on reference dose or cancer slope factor values for lead, therefore it is not possible to calculate
carcinogenic risk or hazard quotient. Lead concentrations are compared to the National Ambient Air Quality Standard of 0.15 μg/m3.
Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Risks are calculated for these values if
indoor air concentrations are entered and indoor air screening levels have been established, but it should be noted that detections of these chemicals
are likely not associated with vapor intrusion.
North Carolina DEQ Risk Calculator
DEQ Risk Calculator - Vapor Intrusion - Non-Residential Worker Indoor Air
Version Date: July 2023
Basis: May 2023 EPA RSL Table
Site ID: NONCD0000571
Exposure Unit ID: 32322 Nanny Drive - Crawlspace (571-RES-02)
CAS # Chemical Name:
Indoor Air
Concentration
(ug/m3)
Target Indoor
Air Conc. for
Carcinogens @
TCR = 1E-06
Target Indoor Air
Conc. for Non-
Carcinogens @
THQ = 0.2
Calculated
Carcinogenic
Risk
Calculated
Non-
Carcinogenic
Hazard
Quotient
71-43-2 Benzene 1.5 1.6E+00 2.6E+01 9.5E-07 1.1E-02
56-23-5 Carbon Tetrachloride 0.2 2.0E+00 8.8E+01 9.8E-08 4.6E-04
106-46-7 Dichlorobenzene, 1,4- 0.46 1.1E+00 7.0E+02 4.1E-07 1.3E-04
100-41-4 Ethylbenzene 0.3 4.9E+00 8.8E+02 6.1E-08 6.8E-05
142-82-5 Heptane, N- 0.34 - 3.5E+02 1.9E-04
110-54-3 Hexane, N- 0.54 - 6.1E+02 1.8E-04
78-93-3 Methyl Ethyl Ketone (2-Butanone) 1.2 - 4.4E+03 5.5E-05
127-18-4 Tetrachloroethylene 0.32 4.7E+01 3.5E+01 6.8E-09 1.8E-03
108-88-3 Toluene 1.8 - 4.4E+03 8.2E-05
95-63-6 Trimethylbenzene, 1,2,4- 0.39 - 5.3E+01 1.5E-03
95-47-6 Xylene, o- 0.27 - 8.8E+01 6.2E-04
106-42-3 Xylene, p- 0.85 - 8.8E+01 1.9E-03
Cumulative: 1.5E-06 1.8E-02
All concentrations are in u /3
Output Form 3F
** - Note that the EPA has no consensus on reference dose or cancer slope factor values for lead, therefore it is not possible to calculate carcinogenic risk
or hazard quotient. Lead concentrations are compared to the National Ambient Air Quality Standard of 0.15 μg/m3.
Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Risks are calculated for these values if
indoor air concentrations are entered and indoor air screening levels have been established, but it should be noted that detections of these chemicals are
likely not associated with vapor intrusion.
North Carolina DEQ Risk Calculator
Version Date:
Basis:
Site Name:
Site Address:
DEQ Section:
Site ID:
Exposure Unit ID:
Submittal Date:
Reviewed By:
1/4/2024
Prepared By:Erin Greene
Kyle Church
Mike Dail
32322 Nanny Drive - Crawlspace (571-RES-03)
North Carolina Department of Environmental Quality
Risk Calculator
Albemarle Dump
Nanny Drive, Albemarle NC
DWM Special Remediation Branch: Pre-Regulatory Landfill Unit
NONCD0000571
July 2023
May 2023 EPA RSL Table
North Carolina DEQ Risk Calculator
Table of Contents
Version Date: July 2023
Basis: May 2023 EPA RSL Table
Site ID: NONCD0000571
Exposure Unit ID: 32322 Nanny Drive - Crawlspace (571-RES-03)
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
TOC
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: July 2023
Basis: May 2023 EPA RSL Table
Site ID: NONCD0000571
Exposure Unit ID: 32322 Nanny Drive - Crawlspace (571-RES-03)
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 Factors and Target Risks
Version Date: July 2023
Basis: May 2023 EPA RSL Table
Site ID: NONCD0000571
Exposure Parameter Site Specific Value Justification
Target Cancer Risk (individual) 1.0E-06
Target Cancer Risk (cumulative) 1.0E-04
Target Hazard Index (individual) 2.0E-01
Target Hazard Index (cumulative) 1.0E+00
Lifetime (LT) (years)70
Body Weight (BW) (kg) 15
Exposure Duration (ED) (yr) 6
Exposure Frequency (EF) (d/yr) 350
Exposure Time (ET) (hr/d) 24
Skin Surface Area - Soil Exposure (SAs) (cm2)2373
Soil Adherence Factor (AF) (mg/cm2)0.2
Soil Ingestion Rate (IRS) (mg/day) 200
Skin Surface Area - Water Exposure (SAw) (cm2)6365
Water Ingestion Rate (IRW) (L/d) 0.78
Water Exposure Time (ETevent) (hr/event)0.54
Water Event Frequency (EV) (events/day) 1
Lifetime (LT) (years)70
Body Weight (BW) (kg) 80
Exposure Duration (ED) (yr) 20
Exposure Frequency (EF) (d/yr) 350
Exposure Time (ET) (hr/d) 24
Skin Surface Area - Soil Exposure (SAs) (cm2)6032
Soil Adherence Factor (AF) (mg/cm2)0.07
Soil Ingestion Rate (IRS) (mg/day) 100
Skin Surface Area - Water Exposure (SAw) (cm2)19652
Water Ingestion Rate (IRW) (L/d) 2.5
Water Exposure Time (ETevent) (hr/event)0.71
Water Event Frequency (EV) (events/day) 1
Lifetime (LT) (years)70
Body Weight (BW) (kg) 80
Exposure Duration (ED) (yr) 25
Exposure Frequency (EF) (d/yr) 250
Exposure Time (ET) (hr/d) 8
Skin Surface Area - Soil Exposure (SAs) (cm2)3527
Soil Adherence Factor (AF) (mg/cm2)0.12
Soil Ingestion Rate (IR) (mg/day) 100
Skin Surface Area - Water Exposure (SAw) (cm2)19652
Water Ingestion Rate (IRW) (L/d) 0.83
Water Exposure Time (ETevent) (hr/event)0.67
Water Event Frequency (EV) (events/day) 1
Lifetime (LT) (years)70
Body Weight (BW) (kg) 80
Working Weeks (EW) (wk/yr) 50
Exposure Duration (ED) (yr) 1
Exposure Frequency (EF) (d/yr) 250
Exposure Time (ET) (hr/d) 8
Skin Surface Area - Soil Exposure (SAs) (cm2)3527
Soil Adherence Factor (AF) (mg/cm2)0.3
Soil Ingestion Rate (IR) (mg/day) 330
1
70
80
330
1
250
8
3527
0.3
50
100
19652
2.5
0.71
1
20
350
24
6032
0.07
0.54
1
70
80
2373
0.2
200
6365
0.78
Input Form 1B
Exposure Unit ID: 32322 Nanny Drive - Crawlspace (571-RES-03)
Residential Child
General
Residential Adult
Default Value
1.0E-06
1.0E-04
2.0E-01
1.0E+00
70
15
6
350
24
Non-Residential Worker
Construction Worker
70
80
25
250
8
3527
0.12
100
19652
0.83
0.67
North Carolina DEQ Risk Calculator
Exposure Factors and Target Risks
Version Date: July 2023
Basis: May 2023 EPA RSL Table
Site ID: NONCD0000571
Exposure Parameter Site Specific Value Justification
Input Form 1B
Exposure Unit ID: 32322 Nanny Drive - Crawlspace (571-RES-03)
Default Value
Recreator Trespasser
Lifetime (LT) (years)70 NA 70
Averaging Time (AT) (days/yr) 365 NA 365
Body Weight (BW) (kg) 15 NA 15
Exposure Duration 0-2 (ED) (yr) 2 NA 2
Exposure Duration 2-6 (ED) (yr) 4 NA 4
Exposure Frequency (EF) (d/yr) 195 NA 195
Exposure Time (ET) (hr/d) 2 NA 2
Skin Surface Area - Soil Exposure (SAs) (cm2)2373 NA 2373
Soil Adherence Factor (AF) (mg/cm2)0.2 NA 0.2
Soil Ingestion Rate (IRS) (mg/day) 200 NA 200
Skin Surface Area - Water Exposure (SAw) (cm2)6365 NA 6365
Water Ingestion Rate (IRW) (L/hr) 0.12 NA 0.12
Water Exposure Time (ETevent) (hr/event)2 NA 2
Water Event Frequency (EV) (events/day) 1 NA 1
Recreator Trespasser
Lifetime (LT) (years)70 70 70
Body Weight (BW) (kg) 80 45 80
Exposure Duration 6-16 (ED) (yr) 10 10 10
Exposure Duration 16-26 (ED) (yr) 10 0 10
Exposure Frequency (EF) (d/yr) 195 90 195
Exposure Time (ET) (hr/d) 2 2 2
Skin Surface Area - Soil Exposure (SAs) (cm2)6032 6032 6032
Soil Adherence Factor (AF) (mg/cm2)0.07 0.2 0.07
Soil Ingestion Rate (IRS) (mg/day) 100 200 100
Skin Surface Area - Water Exposure (SAw) (cm2)19652 19652 19652
Water Ingestion Rate (IRW) (L/hr) 0.11 0.11 0.11
Water Exposure Time (ETevent) (hr/event)2 2 2
Water Event Frequency (EV) (events/day) 1 1 1
User Defined Child
User Defined Adult
North Carolina DEQ Risk Calculator
Exposure Point Concentrations
Version Date: July 2023
Basis: May 2023 EPA RSL Table
Site ID: NONCD0000571
Exposure Unit ID: 32322 Nanny Drive - Crawlspace (571-RES-03)
Description of Exposure Point Concentration Selection:
Exposure Point
Concentration
(ug/m3)
Notes: CAS Number Chemical
Minimum
Concentration
(Qualifier)
Maximum
Concentration
(Qualifier)
Units
Location of
Maximum
Concentration
Detection
Frequency
Range of
Detection
Limits
Concentration
Used for
Screening
Background
Value
Screening
Toxicity Value
(Screening
Level) (n/c)
Potential
ARAR/TBC
Value
Potential
ARAR/TBC
Source
COPC Flag
(Y/N)
Rationale for
Selection or
Deletion
1.4 71-43-2 Benzene ug/m3
0.17 56-23-5 Carbon Tetrachloride ug/m3
0.41 106-46-7 Dichlorobenzene, 1,4-ug/m3
0.25 100-41-4 Ethylbenzene ug/m3
0.27 142-82-5 Heptane, N-ug/m3
0.44 110-54-3 Hexane, N-ug/m3
1.3 78-93-3 Methyl Ethyl Ketone (2-Butanone)ug/m3
0.27 127-18-4 Tetrachloroethylene ug/m3
1.5 108-88-3 Toluene ug/m3
0.26 95-63-6 Trimethylbenzene, 1,2,4-ug/m3
0.22 95-47-6 Xylene, o-ug/m3
0.71 106-42-3 Xylene, p-ug/m3
Input Form 2E
Indoor Air Exposure Point Concentration Table
Note: Chemicals highlighted in orange are non-volatile chemicals. Risks are calculated for these chemicals if indoor air concentrations are entered and indoor air screening levels have been established, but it should be noted that detections of these chemicals are likely not associated with vapor intrusion.
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
Sample ID: 571-RES-03_20231205
32322 Nanny Drive - Carter
Crawlspace Passive Sampler
North Carolina DEQ Risk Calculator
Risk for Individual Pathways Output Form 1A
Version Date: July 2023
Basis: May 2023 EPA RSL Table
Site ID: NONCD0000571
Exposure Unit ID: 32322 Nanny Drive - Crawlspace (571-RES-03)
Receptor Pathway Carcinogenic
Ris Hazard Index Risk exceeded?
Soil NC NC NC
Groundwater Use* NC NC NC
Soil NC NC NC
Groundwater Use* NC NC NC
Construction Worker Soil NC NC NC
Soil NC NC NC
Surface Water* NC NC NC
Receptor Pathway Carcinogenic
Ris Hazard Index Risk exceeded?
Groundwater to Indoor Air NC NC NC
Soil Gas to Indoor Air NC NC NC
Indoor Air 6.1E-06 6.8E-02 NO
Groundwater to Indoor Air NC NC NC
Soil Gas to Indoor Air NC NC NC
Indoor Air 1.4E-06 1.6E-02 NO
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
DEQ Risk Calculator - Vapor Intrusion - Resident Indoor Air
Version Date: July 2023
Basis: May 2023 EPA RSL Table
Site ID: NONCD0000571
Exposure Unit ID: 32322 Nanny Drive - Crawlspace (571-RES-03)
CAS # Chemical Name:
Indoor Air
Concentration
(ug/m3)
Target Indoor
Air Conc. for
Carcinogens @
TCR = 1E-06
Target Indoor Air
Conc. for Non-
Carcinogens @
THQ = 0.2
Calculated
Carcinogenic
Risk
Calculated
Non-
Carcinogenic
Hazard
Quotient
71-43-2 Benzene 1.4 3.6E-01 6.3E+00 3.9E-06 4.5E-02
56-23-5 Carbon Tetrachloride 0.17 4.7E-01 2.1E+01 3.6E-07 1.6E-03
106-46-7 Dichlorobenzene, 1,4- 0.41 2.6E-01 1.7E+02 1.6E-06 4.9E-04
100-41-4 Ethylbenzene 0.25 1.1E+00 2.1E+02 2.2E-07 2.4E-04
142-82-5 Heptane, N- 0.27 - 8.3E+01 6.5E-04
110-54-3 Hexane, N- 0.44 - 1.5E+02 6.0E-04
78-93-3 Methyl Ethyl Ketone (2-Butanone) 1.3 - 1.0E+03 2.5E-04
127-18-4 Tetrachloroethylene 0.27 1.1E+01 8.3E+00 2.5E-08 6.5E-03
108-88-3 Toluene 1.5 - 1.0E+03 2.9E-04
95-63-6 Trimethylbenzene, 1,2,4- 0.26 - 1.3E+01 4.2E-03
95-47-6 Xylene, o- 0.22 - 2.1E+01 2.1E-03
106-42-3 Xylene, p- 0.71 - 2.1E+01 6.8E-03
Cumulative: 6.1E-06 6.8E-02
All concentrations are in ug/m3
Output Form 3C
** - Note that the EPA has no consensus on reference dose or cancer slope factor values for lead, therefore it is not possible to calculate
carcinogenic risk or hazard quotient. Lead concentrations are compared to the National Ambient Air Quality Standard of 0.15 μg/m3.
Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Risks are calculated for these values if
indoor air concentrations are entered and indoor air screening levels have been established, but it should be noted that detections of these chemicals
are likely not associated with vapor intrusion.
North Carolina DEQ Risk Calculator
DEQ Risk Calculator - Vapor Intrusion - Non-Residential Worker Indoor Air
Version Date: July 2023
Basis: May 2023 EPA RSL Table
Site ID: NONCD0000571
Exposure Unit ID: 32322 Nanny Drive - Crawlspace (571-RES-03)
CAS # Chemical Name:
Indoor Air
Concentration
(ug/m3)
Target Indoor
Air Conc. for
Carcinogens @
TCR = 1E-06
Target Indoor Air
Conc. for Non-
Carcinogens @
THQ = 0.2
Calculated
Carcinogenic
Risk
Calculated
Non-
Carcinogenic
Hazard
Quotient
71-43-2 Benzene 1.4 1.6E+00 2.6E+01 8.9E-07 1.1E-02
56-23-5 Carbon Tetrachloride 0.17 2.0E+00 8.8E+01 8.3E-08 3.9E-04
106-46-7 Dichlorobenzene, 1,4- 0.41 1.1E+00 7.0E+02 3.7E-07 1.2E-04
100-41-4 Ethylbenzene 0.25 4.9E+00 8.8E+02 5.1E-08 5.7E-05
142-82-5 Heptane, N- 0.27 - 3.5E+02 1.5E-04
110-54-3 Hexane, N- 0.44 - 6.1E+02 1.4E-04
78-93-3 Methyl Ethyl Ketone (2-Butanone) 1.3 - 4.4E+03 5.9E-05
127-18-4 Tetrachloroethylene 0.27 4.7E+01 3.5E+01 5.7E-09 1.5E-03
108-88-3 Toluene 1.5 - 4.4E+03 6.8E-05
95-63-6 Trimethylbenzene, 1,2,4- 0.26 - 5.3E+01 9.9E-04
95-47-6 Xylene, o- 0.22 - 8.8E+01 5.0E-04
106-42-3 Xylene, p- 0.71 - 8.8E+01 1.6E-03
Cumulative: 1.4E-06 1.6E-02
All concentrations are in u /3
Output Form 3F
** - Note that the EPA has no consensus on reference dose or cancer slope factor values for lead, therefore it is not possible to calculate carcinogenic risk
or hazard quotient. Lead concentrations are compared to the National Ambient Air Quality Standard of 0.15 μg/m3.
Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Risks are calculated for these values if
indoor air concentrations are entered and indoor air screening levels have been established, but it should be noted that detections of these chemicals are
likely not associated with vapor intrusion.
North Carolina DEQ Risk Calculator
Version Date:
Basis:
Site Name:
Site Address:
DEQ Section:
Site ID:
Exposure Unit ID:
Submittal Date:
Reviewed By:
1/4/2024
Prepared By:Erin Greene
Kyle Church
Mike Dail
32311 Nanny Drive - Crawlspace (571-RES-04)
North Carolina Department of Environmental Quality
Risk Calculator
Albemarle Dump
Nanny Drive, Albemarle NC
DWM Special Remediation Branch: Pre-Regulatory Landfill Unit
NONCD0000571
July 2023
May 2023 EPA RSL Table
North Carolina DEQ Risk Calculator
Table of Contents
Version Date: July 2023
Basis: May 2023 EPA RSL Table
Site ID: NONCD0000571
Exposure Unit ID: 32311 Nanny Drive - Crawlspace (571-RES-04)
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
TOC
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: July 2023
Basis: May 2023 EPA RSL Table
Site ID: NONCD0000571
Exposure Unit ID: 32311 Nanny Drive - Crawlspace (571-RES-04)
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 Factors and Target Risks
Version Date: July 2023
Basis: May 2023 EPA RSL Table
Site ID: NONCD0000571
Exposure Parameter Site Specific Value Justification
Target Cancer Risk (individual) 1.0E-06
Target Cancer Risk (cumulative) 1.0E-04
Target Hazard Index (individual) 2.0E-01
Target Hazard Index (cumulative) 1.0E+00
Lifetime (LT) (years)70
Body Weight (BW) (kg) 15
Exposure Duration (ED) (yr) 6
Exposure Frequency (EF) (d/yr) 350
Exposure Time (ET) (hr/d) 24
Skin Surface Area - Soil Exposure (SAs) (cm2)2373
Soil Adherence Factor (AF) (mg/cm2)0.2
Soil Ingestion Rate (IRS) (mg/day) 200
Skin Surface Area - Water Exposure (SAw) (cm2)6365
Water Ingestion Rate (IRW) (L/d) 0.78
Water Exposure Time (ETevent) (hr/event)0.54
Water Event Frequency (EV) (events/day) 1
Lifetime (LT) (years)70
Body Weight (BW) (kg) 80
Exposure Duration (ED) (yr) 20
Exposure Frequency (EF) (d/yr) 350
Exposure Time (ET) (hr/d) 24
Skin Surface Area - Soil Exposure (SAs) (cm2)6032
Soil Adherence Factor (AF) (mg/cm2)0.07
Soil Ingestion Rate (IRS) (mg/day) 100
Skin Surface Area - Water Exposure (SAw) (cm2)19652
Water Ingestion Rate (IRW) (L/d) 2.5
Water Exposure Time (ETevent) (hr/event)0.71
Water Event Frequency (EV) (events/day) 1
Lifetime (LT) (years)70
Body Weight (BW) (kg) 80
Exposure Duration (ED) (yr) 25
Exposure Frequency (EF) (d/yr) 250
Exposure Time (ET) (hr/d) 8
Skin Surface Area - Soil Exposure (SAs) (cm2)3527
Soil Adherence Factor (AF) (mg/cm2)0.12
Soil Ingestion Rate (IR) (mg/day) 100
Skin Surface Area - Water Exposure (SAw) (cm2)19652
Water Ingestion Rate (IRW) (L/d) 0.83
Water Exposure Time (ETevent) (hr/event)0.67
Water Event Frequency (EV) (events/day) 1
Lifetime (LT) (years)70
Body Weight (BW) (kg) 80
Working Weeks (EW) (wk/yr) 50
Exposure Duration (ED) (yr) 1
Exposure Frequency (EF) (d/yr) 250
Exposure Time (ET) (hr/d) 8
Skin Surface Area - Soil Exposure (SAs) (cm2)3527
Soil Adherence Factor (AF) (mg/cm2)0.3
Soil Ingestion Rate (IR) (mg/day) 330
1
70
80
330
1
250
8
3527
0.3
50
100
19652
2.5
0.71
1
20
350
24
6032
0.07
0.54
1
70
80
2373
0.2
200
6365
0.78
Input Form 1B
Exposure Unit ID: 32311 Nanny Drive - Crawlspace (571-RES-04)
Residential Child
General
Residential Adult
Default Value
1.0E-06
1.0E-04
2.0E-01
1.0E+00
70
15
6
350
24
Non-Residential Worker
Construction Worker
70
80
25
250
8
3527
0.12
100
19652
0.83
0.67
North Carolina DEQ Risk Calculator
Exposure Factors and Target Risks
Version Date: July 2023
Basis: May 2023 EPA RSL Table
Site ID: NONCD0000571
Exposure Parameter Site Specific Value Justification
Input Form 1B
Exposure Unit ID: 32311 Nanny Drive - Crawlspace (571-RES-04)
Default Value
Recreator Trespasser
Lifetime (LT) (years)70 NA 70
Averaging Time (AT) (days/yr) 365 NA 365
Body Weight (BW) (kg) 15 NA 15
Exposure Duration 0-2 (ED) (yr) 2 NA 2
Exposure Duration 2-6 (ED) (yr) 4 NA 4
Exposure Frequency (EF) (d/yr) 195 NA 195
Exposure Time (ET) (hr/d) 2 NA 2
Skin Surface Area - Soil Exposure (SAs) (cm2)2373 NA 2373
Soil Adherence Factor (AF) (mg/cm2)0.2 NA 0.2
Soil Ingestion Rate (IRS) (mg/day) 200 NA 200
Skin Surface Area - Water Exposure (SAw) (cm2)6365 NA 6365
Water Ingestion Rate (IRW) (L/hr) 0.12 NA 0.12
Water Exposure Time (ETevent) (hr/event)2 NA 2
Water Event Frequency (EV) (events/day) 1 NA 1
Recreator Trespasser
Lifetime (LT) (years)70 70 70
Body Weight (BW) (kg) 80 45 80
Exposure Duration 6-16 (ED) (yr) 10 10 10
Exposure Duration 16-26 (ED) (yr) 10 0 10
Exposure Frequency (EF) (d/yr) 195 90 195
Exposure Time (ET) (hr/d) 2 2 2
Skin Surface Area - Soil Exposure (SAs) (cm2)6032 6032 6032
Soil Adherence Factor (AF) (mg/cm2)0.07 0.2 0.07
Soil Ingestion Rate (IRS) (mg/day) 100 200 100
Skin Surface Area - Water Exposure (SAw) (cm2)19652 19652 19652
Water Ingestion Rate (IRW) (L/hr) 0.11 0.11 0.11
Water Exposure Time (ETevent) (hr/event)2 2 2
Water Event Frequency (EV) (events/day) 1 1 1
User Defined Child
User Defined Adult
North Carolina DEQ Risk Calculator
Exposure Point Concentrations
Version Date: July 2023
Basis: May 2023 EPA RSL Table
Site ID: NONCD0000571
Exposure Unit ID: 32311 Nanny Drive - Crawlspace (571-RES-04)
Description of Exposure Point Concentration Selection:
Exposure Point
Concentration
(ug/m3)
Notes: CAS Number Chemical
Minimum
Concentration
(Qualifier)
Maximum
Concentration
(Qualifier)
Units
Location of
Maximum
Concentration
Detection
Frequency
Range of
Detection
Limits
Concentration
Used for
Screening
Background
Value
Screening
Toxicity Value
(Screening
Level) (n/c)
Potential
ARAR/TBC
Value
Potential
ARAR/TBC
Source
COPC Flag
(Y/N)
Rationale for
Selection or
Deletion
0.19 56-23-5 Carbon Tetrachloride ug/m3
1.4 127-18-4 Tetrachloroethylene ug/m3
0.34 108-88-3 Toluene ug/m3
0.29 79-01-6 Trichloroethylene ug/m3
Input Form 2E
Indoor Air Exposure Point Concentration Table
Note: Chemicals highlighted in orange are non-volatile chemicals. Risks are calculated for these chemicals if indoor air concentrations are entered and indoor air screening levels have been established, but it should be noted that detections of these chemicals are likely not associated with vapor intrusion.
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
Sample ID: 571-RES-04_20231205
32311 Nanny Drive - Carter
Crawlspace Passive Sampler
North Carolina DEQ Risk Calculator
Risk for Individual Pathways Output Form 1A
Version Date: July 2023
Basis: May 2023 EPA RSL Table
Site ID: NONCD0000571
Exposure Unit ID: 32311 Nanny Drive - Crawlspace (571-RES-04)
Receptor Pathway Carcinogenic
Ris Hazard Index Risk exceeded?
Soil NC NC NC
Groundwater Use* NC NC NC
Soil NC NC NC
Groundwater Use* NC NC NC
Construction Worker Soil NC NC NC
Soil NC NC NC
Surface Water* NC NC NC
Receptor Pathway Carcinogenic
Ris Hazard Index Risk exceeded?
Groundwater to Indoor Air NC NC NC
Soil Gas to Indoor Air NC NC NC
Indoor Air 1.1E-06 1.7E-01 NO
Groundwater to Indoor Air NC NC NC
Soil Gas to Indoor Air NC NC NC
Indoor Air 2.2E-07 4.2E-02 NO
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
DEQ Risk Calculator - Vapor Intrusion - Resident Indoor Air
Version Date: July 2023
Basis: May 2023 EPA RSL Table
Site ID: NONCD0000571
Exposure Unit ID: 32311 Nanny Drive - Crawlspace (571-RES-04)
CAS # Chemical Name:
Indoor Air
Concentration
(ug/m3)
Target Indoor
Air Conc. for
Carcinogens @
TCR = 1E-06
Target Indoor Air
Conc. for Non-
Carcinogens @
THQ = 0.2
Calculated
Carcinogenic
Risk
Calculated
Non-
Carcinogenic
Hazard
Quotient
56-23-5 Carbon Tetrachloride 0.19 4.7E-01 2.1E+01 4.1E-07 1.8E-03
127-18-4 Tetrachloroethylene 1.4 1.1E+01 8.3E+00 1.3E-07 3.4E-02
108-88-3 Toluene 0.34 - 1.0E+03 6.5E-05
79-01-6 Trichloroethylene 0.29 4.8E-01 4.2E-01 6.1E-07 1.4E-01
Cumulative: 1.1E-06 1.7E-01
All concentrations are in ug/m3
Output Form 3C
** - Note that the EPA has no consensus on reference dose or cancer slope factor values for lead, therefore it is not possible to calculate
carcinogenic risk or hazard quotient. Lead concentrations are compared to the National Ambient Air Quality Standard of 0.15 μg/m3.
Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Risks are calculated for these values if
indoor air concentrations are entered and indoor air screening levels have been established, but it should be noted that detections of these chemicals
are likely not associated with vapor intrusion.
North Carolina DEQ Risk Calculator
DEQ Risk Calculator - Vapor Intrusion - Non-Residential Worker Indoor Air
Version Date: July 2023
Basis: May 2023 EPA RSL Table
Site ID: NONCD0000571
Exposure Unit ID: 32311 Nanny Drive - Crawlspace (571-RES-04)
CAS # Chemical Name:
Indoor Air
Concentration
(ug/m3)
Target Indoor
Air Conc. for
Carcinogens @
TCR = 1E-06
Target Indoor Air
Conc. for Non-
Carcinogens @
THQ = 0.2
Calculated
Carcinogenic
Risk
Calculated
Non-
Carcinogenic
Hazard
Quotient
56-23-5 Carbon Tetrachloride 0.19 2.0E+00 8.8E+01 9.3E-08 4.3E-04
127-18-4 Tetrachloroethylene 1.4 4.7E+01 3.5E+01 3.0E-08 8.0E-03
108-88-3 Toluene 0.34 - 4.4E+03 1.6E-05
79-01-6 Trichloroethylene 0.29 3.0E+00 1.8E+00 9.7E-08 3.3E-02
Cumulative: 2.2E-07 4.2E-02
All concentrations are in u /3
Output Form 3F
** - Note that the EPA has no consensus on reference dose or cancer slope factor values for lead, therefore it is not possible to calculate carcinogenic risk
or hazard quotient. Lead concentrations are compared to the National Ambient Air Quality Standard of 0.15 μg/m3.
Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Risks are calculated for these values if
indoor air concentrations are entered and indoor air screening levels have been established, but it should be noted that detections of these chemicals are
likely not associated with vapor intrusion.
North Carolina DEQ Risk Calculator
Version Date:
Basis:
Site Name:
Site Address:
DEQ Section:
Site ID:
Exposure Unit ID:
Submittal Date:
Reviewed By:
32311 Nanny Drive - Crawlspace (571-RES-05)
North Carolina Department of Environmental Quality
Risk Calculator
Albemarle Dump
Nanny Drive, Albemarle NC
DWM Special Remediation Branch: Pre-Regulatory Landfill Unit
NONCD0000571
July 2023
May 2023 EPA RSL Table
1/4/2024
Prepared By:Erin Greene
Kyle Church
Mike Dail
North Carolina DEQ Risk Calculator
Table of Contents
Version Date: July 2023
Basis: May 2023 EPA RSL Table
Site ID: NONCD0000571
Exposure Unit ID: 32311 Nanny Drive - Crawlspace (571-RES-05)
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
TOC
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: July 2023
Basis: May 2023 EPA RSL Table
Site ID: NONCD0000571
Exposure Unit ID: 32311 Nanny Drive - Crawlspace (571-RES-05)
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
Resident
Non-Residential Worker
CONTAMINANT MIGRATION PATHWAYS
Groundwater
Surface Water
Input Form 1A
VAPOR INTRUSION PATHWAYS
DIRECT CONTACT SOIL AND WATER PATHWAYS
Resident
Non-Residential Worker
Recreator/Trespasser
North Carolina DEQ Risk Calculator
Exposure Factors and Target Risks
Version Date: July 2023
Basis: May 2023 EPA RSL Table
Site ID: NONCD0000571
Exposure Parameter Site Specific Value Justification
Target Cancer Risk (individual) 1.0E-06
Target Cancer Risk (cumulative) 1.0E-04
Target Hazard Index (individual) 2.0E-01
Target Hazard Index (cumulative) 1.0E+00
Lifetime (LT) (years)70
Body Weight (BW) (kg) 15
Exposure Duration (ED) (yr) 6
Exposure Frequency (EF) (d/yr) 350
Exposure Time (ET) (hr/d) 24
Skin Surface Area - Soil Exposure (SAs) (cm2)2373
Soil Adherence Factor (AF) (mg/cm2)0.2
Soil Ingestion Rate (IRS) (mg/day) 200
Skin Surface Area - Water Exposure (SAw) (cm2)6365
Water Ingestion Rate (IRW) (L/d) 0.78
Water Exposure Time (ETevent) (hr/event)0.54
Water Event Frequency (EV) (events/day) 1
Lifetime (LT) (years)70
Body Weight (BW) (kg) 80
Exposure Duration (ED) (yr) 20
Exposure Frequency (EF) (d/yr) 350
Exposure Time (ET) (hr/d) 24
Skin Surface Area - Soil Exposure (SAs) (cm2)6032
Soil Adherence Factor (AF) (mg/cm2)0.07
Soil Ingestion Rate (IRS) (mg/day) 100
Skin Surface Area - Water Exposure (SAw) (cm2)19652
Water Ingestion Rate (IRW) (L/d) 2.5
Water Exposure Time (ETevent) (hr/event)0.71
Water Event Frequency (EV) (events/day) 1
Lifetime (LT) (years)70
Body Weight (BW) (kg) 80
Exposure Duration (ED) (yr) 25
Exposure Frequency (EF) (d/yr) 250
Exposure Time (ET) (hr/d) 8
Skin Surface Area - Soil Exposure (SAs) (cm2)3527
Soil Adherence Factor (AF) (mg/cm2)0.12
Soil Ingestion Rate (IR) (mg/day) 100
Skin Surface Area - Water Exposure (SAw) (cm2)19652
Water Ingestion Rate (IRW) (L/d) 0.83
Water Exposure Time (ETevent) (hr/event)0.67
Water Event Frequency (EV) (events/day) 1
Lifetime (LT) (years)70
Body Weight (BW) (kg) 80
Working Weeks (EW) (wk/yr) 50
Exposure Duration (ED) (yr) 1
Exposure Frequency (EF) (d/yr) 250
Exposure Time (ET) (hr/d) 8
Skin Surface Area - Soil Exposure (SAs) (cm2)3527
Soil Adherence Factor (AF) (mg/cm2)0.3
Soil Ingestion Rate (IR) (mg/day) 330
Non-Residential Worker
Construction Worker
70
80
25
250
8
3527
0.12
100
19652
0.83
0.67
Input Form 1B
Exposure Unit ID: 32311 Nanny Drive - Crawlspace (571-RES-05)
Residential Child
General
Residential Adult
Default Value
1.0E-06
1.0E-04
2.0E-01
1.0E+00
70
15
6
350
24
2373
0.2
200
6365
0.78
0.54
1
70
80
20
350
24
6032
0.07
100
19652
2.5
0.71
1
1
70
80
330
1
250
8
3527
0.3
50
North Carolina DEQ Risk Calculator
Exposure Factors and Target Risks
Version Date: July 2023
Basis: May 2023 EPA RSL Table
Site ID: NONCD0000571
Exposure Parameter Site Specific Value Justification
Input Form 1B
Exposure Unit ID: 32311 Nanny Drive - Crawlspace (571-RES-05)
Default Value
Recreator Trespasser
Lifetime (LT) (years)70 NA 70
Averaging Time (AT) (days/yr) 365 NA 365
Body Weight (BW) (kg) 15 NA 15
Exposure Duration 0-2 (ED) (yr) 2 NA 2
Exposure Duration 2-6 (ED) (yr) 4 NA 4
Exposure Frequency (EF) (d/yr) 195 NA 195
Exposure Time (ET) (hr/d) 2 NA 2
Skin Surface Area - Soil Exposure (SAs) (cm2)2373 NA 2373
Soil Adherence Factor (AF) (mg/cm2)0.2 NA 0.2
Soil Ingestion Rate (IRS) (mg/day) 200 NA 200
Skin Surface Area - Water Exposure (SAw) (cm2)6365 NA 6365
Water Ingestion Rate (IRW) (L/hr) 0.12 NA 0.12
Water Exposure Time (ETevent) (hr/event)2 NA 2
Water Event Frequency (EV) (events/day) 1 NA 1
Recreator Trespasser
Lifetime (LT) (years)70 70 70
Body Weight (BW) (kg) 80 45 80
Exposure Duration 6-16 (ED) (yr) 10 10 10
Exposure Duration 16-26 (ED) (yr) 10 0 10
Exposure Frequency (EF) (d/yr) 195 90 195
Exposure Time (ET) (hr/d) 2 2 2
Skin Surface Area - Soil Exposure (SAs) (cm2)6032 6032 6032
Soil Adherence Factor (AF) (mg/cm2)0.07 0.2 0.07
Soil Ingestion Rate (IRS) (mg/day) 100 200 100
Skin Surface Area - Water Exposure (SAw) (cm2)19652 19652 19652
Water Ingestion Rate (IRW) (L/hr) 0.11 0.11 0.11
Water Exposure Time (ETevent) (hr/event)2 2 2
Water Event Frequency (EV) (events/day) 1 1 1
User Defined Child
User Defined Adult
North Carolina DEQ Risk Calculator
Exposure Point Concentrations
Version Date: July 2023
Basis: May 2023 EPA RSL Table
Site ID: NONCD0000571
Exposure Unit ID: 32311 Nanny Drive - Crawlspace (571-RES-05)
Description of Exposure Point Concentration Selection:
Exposure Point
Concentration
(ug/m3)
Notes: CAS Number Chemical
Minimum
Concentration
(Qualifier)
Maximum
Concentration
(Qualifier)
Units
Location of
Maximum
Concentration
Detection
Frequency
Range of
Detection
Limits
Concentration
Used for
Screening
Background
Value
Screening
Toxicity Value
(Screening
Level) (n/c)
Potential
ARAR/TBC
Value
Potential
ARAR/TBC
Source
COPC Flag
(Y/N)
Rationale for
Selection or
Deletion
0.19 56-23-5 Carbon Tetrachloride ug/m3
0.16 110-54-3 Hexane, N-ug/m3
0.55 127-18-4 Tetrachloroethylene ug/m3
0.38 108-88-3 Toluene ug/m3
0.17 108-38-3 Xylene, m-ug/m3
Input Form 2E
Indoor Air Exposure Point Concentration Table
Note: Chemicals highlighted in orange are non-volatile chemicals. Risks are calculated for these chemicals if indoor air concentrations are entered and indoor air screening levels have been established, but it should be noted that detections of these chemicals are likely not associated with vapor intrusion.
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
Sample ID: 571-RES-05_20231205
32311 Nanny Drive - Page-Lambert
Crawlspace Passive Sampler
North Carolina DEQ Risk Calculator
Risk for Individual Pathways Output Form 1A
Version Date: July 2023
Basis: May 2023 EPA RSL Table
Site ID: NONCD0000571
Exposure Unit ID: 32311 Nanny Drive - Crawlspace (571-RES-05)
Receptor Pathway Carcinogenic
Ris Hazard Index Risk exceeded?
Soil NC NC NC
Groundwater Use* NC NC NC
Soil NC NC NC
Groundwater Use* NC NC NC
Construction Worker Soil NC NC NC
Soil NC NC NC
Surface Water* NC NC NC
Receptor Pathway Carcinogenic
Ris Hazard Index Risk exceeded?
Groundwater to Indoor Air NC NC NC
Soil Gas to Indoor Air NC NC NC
Indoor Air 4.6E-07 1.7E-02 NO
Groundwater to Indoor Air NC NC NC
Soil Gas to Indoor Air NC NC NC
Indoor Air 1.0E-07 4.0E-03 NO
Pathway Source
Source Soil NC
Source Groundwater NC
Source Soil NC
Source Groundwater NC
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:
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?
North Carolina DEQ Risk Calculator
DEQ Risk Calculator - Vapor Intrusion - Resident Indoor Air
Version Date: July 2023
Basis: May 2023 EPA RSL Table
Site ID: NONCD0000571
Exposure Unit ID: 32311 Nanny Drive - Crawlspace (571-RES-05)
CAS # Chemical Name:
Indoor Air
Concentration
(ug/m3)
Target Indoor
Air Conc. for
Carcinogens @
TCR = 1E-06
Target Indoor Air
Conc. for Non-
Carcinogens @
THQ = 0.2
Calculated
Carcinogenic
Risk
Calculated
Non-
Carcinogenic
Hazard
Quotient
56-23-5 Carbon Tetrachloride 0.19 4.7E-01 2.1E+01 4.1E-07 1.8E-03
110-54-3 Hexane, N- 0.16 - 1.5E+02 2.2E-04
127-18-4 Tetrachloroethylene 0.55 1.1E+01 8.3E+00 5.1E-08 1.3E-02
108-88-3 Toluene 0.38 - 1.0E+03 7.3E-05
108-38-3 Xylene, m- 0.17 - 2.1E+01 1.6E-03
Cumulative: 4.6E-07 1.7E-02
All concentrations are in ug/m3
Output Form 3C
** - Note that the EPA has no consensus on reference dose or cancer slope factor values for lead, therefore it is not possible to calculate
carcinogenic risk or hazard quotient. Lead concentrations are compared to the National Ambient Air Quality Standard of 0.15 μg/m3.
Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Risks are calculated for these values if
indoor air concentrations are entered and indoor air screening levels have been established, but it should be noted that detections of these chemicals
are likely not associated with vapor intrusion.
North Carolina DEQ Risk Calculator
DEQ Risk Calculator - Vapor Intrusion - Non-Residential Worker Indoor Air
Version Date: July 2023
Basis: May 2023 EPA RSL Table
Site ID: NONCD0000571
Exposure Unit ID: 32311 Nanny Drive - Crawlspace (571-RES-05)
CAS # Chemical Name:
Indoor Air
Concentration
(ug/m3)
Target Indoor
Air Conc. for
Carcinogens @
TCR = 1E-06
Target Indoor Air
Conc. for Non-
Carcinogens @
THQ = 0.2
Calculated
Carcinogenic
Risk
Calculated
Non-
Carcinogenic
Hazard
Quotient
56-23-5 Carbon Tetrachloride 0.19 2.0E+00 8.8E+01 9.3E-08 4.3E-04
110-54-3 Hexane, N- 0.16 - 6.1E+02 5.2E-05
127-18-4 Tetrachloroethylene 0.55 4.7E+01 3.5E+01 1.2E-08 3.1E-03
108-88-3 Toluene 0.38 - 4.4E+03 1.7E-05
108-38-3 Xylene, m- 0.17 - 8.8E+01 3.9E-04
Cumulative: 1.0E-07 4.0E-03
All concentrations are in u /3
Output Form 3F
** - Note that the EPA has no consensus on reference dose or cancer slope factor values for lead, therefore it is not possible to calculate carcinogenic risk
or hazard quotient. Lead concentrations are compared to the National Ambient Air Quality Standard of 0.15 μg/m3.
Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Risks are calculated for these values if
indoor air concentrations are entered and indoor air screening levels have been established, but it should be noted that detections of these chemicals are
likely not associated with vapor intrusion.
North Carolina DEQ Risk Calculator
Version Date:
Basis:
Site Name:
Site Address:
DEQ Section:
Site ID:
Exposure Unit ID:
Submittal Date:
Reviewed By:
1/4/2024
Prepared By:Erin Greene
Kyle Church
Mike Dail
32311 Nanny Drive - Crawlspace (571-RES-06)
North Carolina Department of Environmental Quality
Risk Calculator
Albemarle Dump
Nanny Drive, Albemarle NC
DWM Special Remediation Branch: Pre-Regulatory Landfill Unit
NONCD0000571
July 2023
May 2023 EPA RSL Table
North Carolina DEQ Risk Calculator
Table of Contents
Version Date: July 2023
Basis: May 2023 EPA RSL Table
Site ID: NONCD0000571
Exposure Unit ID: 32311 Nanny Drive - Crawlspace (571-RES-06)
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
TOC
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: July 2023
Basis: May 2023 EPA RSL Table
Site ID: NONCD0000571
Exposure Unit ID: 32311 Nanny Drive - Crawlspace (571-RES-06)
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 Factors and Target Risks
Version Date: July 2023
Basis: May 2023 EPA RSL Table
Site ID: NONCD0000571
Exposure Parameter Site Specific Value Justification
Target Cancer Risk (individual) 1.0E-06
Target Cancer Risk (cumulative) 1.0E-04
Target Hazard Index (individual) 2.0E-01
Target Hazard Index (cumulative) 1.0E+00
Lifetime (LT) (years)70
Body Weight (BW) (kg) 15
Exposure Duration (ED) (yr) 6
Exposure Frequency (EF) (d/yr) 350
Exposure Time (ET) (hr/d) 24
Skin Surface Area - Soil Exposure (SAs) (cm2)2373
Soil Adherence Factor (AF) (mg/cm2)0.2
Soil Ingestion Rate (IRS) (mg/day) 200
Skin Surface Area - Water Exposure (SAw) (cm2)6365
Water Ingestion Rate (IRW) (L/d) 0.78
Water Exposure Time (ETevent) (hr/event)0.54
Water Event Frequency (EV) (events/day) 1
Lifetime (LT) (years)70
Body Weight (BW) (kg) 80
Exposure Duration (ED) (yr) 20
Exposure Frequency (EF) (d/yr) 350
Exposure Time (ET) (hr/d) 24
Skin Surface Area - Soil Exposure (SAs) (cm2)6032
Soil Adherence Factor (AF) (mg/cm2)0.07
Soil Ingestion Rate (IRS) (mg/day) 100
Skin Surface Area - Water Exposure (SAw) (cm2)19652
Water Ingestion Rate (IRW) (L/d) 2.5
Water Exposure Time (ETevent) (hr/event)0.71
Water Event Frequency (EV) (events/day) 1
Lifetime (LT) (years)70
Body Weight (BW) (kg) 80
Exposure Duration (ED) (yr) 25
Exposure Frequency (EF) (d/yr) 250
Exposure Time (ET) (hr/d) 8
Skin Surface Area - Soil Exposure (SAs) (cm2)3527
Soil Adherence Factor (AF) (mg/cm2)0.12
Soil Ingestion Rate (IR) (mg/day) 100
Skin Surface Area - Water Exposure (SAw) (cm2)19652
Water Ingestion Rate (IRW) (L/d) 0.83
Water Exposure Time (ETevent) (hr/event)0.67
Water Event Frequency (EV) (events/day) 1
Lifetime (LT) (years)70
Body Weight (BW) (kg) 80
Working Weeks (EW) (wk/yr) 50
Exposure Duration (ED) (yr) 1
Exposure Frequency (EF) (d/yr) 250
Exposure Time (ET) (hr/d) 8
Skin Surface Area - Soil Exposure (SAs) (cm2)3527
Soil Adherence Factor (AF) (mg/cm2)0.3
Soil Ingestion Rate (IR) (mg/day) 330
1
70
80
330
1
250
8
3527
0.3
50
100
19652
2.5
0.71
1
20
350
24
6032
0.07
0.54
1
70
80
2373
0.2
200
6365
0.78
Input Form 1B
Exposure Unit ID: 32311 Nanny Drive - Crawlspace (571-RES-06)
Residential Child
General
Residential Adult
Default Value
1.0E-06
1.0E-04
2.0E-01
1.0E+00
70
15
6
350
24
Non-Residential Worker
Construction Worker
70
80
25
250
8
3527
0.12
100
19652
0.83
0.67
North Carolina DEQ Risk Calculator
Exposure Factors and Target Risks
Version Date: July 2023
Basis: May 2023 EPA RSL Table
Site ID: NONCD0000571
Exposure Parameter Site Specific Value Justification
Input Form 1B
Exposure Unit ID: 32311 Nanny Drive - Crawlspace (571-RES-06)
Default Value
Recreator Trespasser
Lifetime (LT) (years)70 NA 70
Averaging Time (AT) (days/yr) 365 NA 365
Body Weight (BW) (kg) 15 NA 15
Exposure Duration 0-2 (ED) (yr) 2 NA 2
Exposure Duration 2-6 (ED) (yr) 4 NA 4
Exposure Frequency (EF) (d/yr) 195 NA 195
Exposure Time (ET) (hr/d) 2 NA 2
Skin Surface Area - Soil Exposure (SAs) (cm2)2373 NA 2373
Soil Adherence Factor (AF) (mg/cm2)0.2 NA 0.2
Soil Ingestion Rate (IRS) (mg/day) 200 NA 200
Skin Surface Area - Water Exposure (SAw) (cm2)6365 NA 6365
Water Ingestion Rate (IRW) (L/hr) 0.12 NA 0.12
Water Exposure Time (ETevent) (hr/event)2 NA 2
Water Event Frequency (EV) (events/day) 1 NA 1
Recreator Trespasser
Lifetime (LT) (years)70 70 70
Body Weight (BW) (kg) 80 45 80
Exposure Duration 6-16 (ED) (yr) 10 10 10
Exposure Duration 16-26 (ED) (yr) 10 0 10
Exposure Frequency (EF) (d/yr) 195 90 195
Exposure Time (ET) (hr/d) 2 2 2
Skin Surface Area - Soil Exposure (SAs) (cm2)6032 6032 6032
Soil Adherence Factor (AF) (mg/cm2)0.07 0.2 0.07
Soil Ingestion Rate (IRS) (mg/day) 100 200 100
Skin Surface Area - Water Exposure (SAw) (cm2)19652 19652 19652
Water Ingestion Rate (IRW) (L/hr) 0.11 0.11 0.11
Water Exposure Time (ETevent) (hr/event)2 2 2
Water Event Frequency (EV) (events/day) 1 1 1
User Defined Child
User Defined Adult
North Carolina DEQ Risk Calculator
Exposure Point Concentrations
Version Date: July 2023
Basis: May 2023 EPA RSL Table
Site ID: NONCD0000571
Exposure Unit ID: 32311 Nanny Drive - Crawlspace (571-RES-06)
Description of Exposure Point Concentration Selection:
Exposure Point
Concentration
(ug/m3)
Notes: CAS Number Chemical
Minimum
Concentration
(Qualifier)
Maximum
Concentration
(Qualifier)
Units
Location of
Maximum
Concentration
Detection
Frequency
Range of
Detection
Limits
Concentration
Used for
Screening
Background
Value
Screening
Toxicity Value
(Screening
Level) (n/c)
Potential
ARAR/TBC
Value
Potential
ARAR/TBC
Source
COPC Flag
(Y/N)
Rationale for
Selection or
Deletion
0.18 56-23-5 Carbon Tetrachloride ug/m3
0.71 127-18-4 Tetrachloroethylene ug/m3
0.33 108-88-3 Toluene ug/m3
0.14 79-01-6 Trichloroethylene ug/m3
Input Form 2E
Indoor Air Exposure Point Concentration Table
Note: Chemicals highlighted in orange are non-volatile chemicals. Risks are calculated for these chemicals if indoor air concentrations are entered and indoor air screening levels have been established, but it should be noted that detections of these chemicals are likely not associated with vapor intrusion.
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
Sample ID: 571-RES-06_20231205
32311 Nanny Drive - Page-Lambert
Crawlspace Passive Sampler
North Carolina DEQ Risk Calculator
Risk for Individual Pathways Output Form 1A
Version Date: July 2023
Basis: May 2023 EPA RSL Table
Site ID: NONCD0000571
Exposure Unit ID: 32311 Nanny Drive - Crawlspace (571-RES-06)
Receptor Pathway Carcinogenic
Ris Hazard Index Risk exceeded?
Soil NC NC NC
Groundwater Use* NC NC NC
Soil NC NC NC
Groundwater Use* NC NC NC
Construction Worker Soil NC NC NC
Soil NC NC NC
Surface Water* NC NC NC
Receptor Pathway Carcinogenic
Ris Hazard Index Risk exceeded?
Groundwater to Indoor Air NC NC NC
Soil Gas to Indoor Air NC NC NC
Indoor Air 7.4E-07 8.6E-02 NO
Groundwater to Indoor Air NC NC NC
Soil Gas to Indoor Air NC NC NC
Indoor Air 1.5E-07 2.0E-02 NO
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
DEQ Risk Calculator - Vapor Intrusion - Resident Indoor Air
Version Date: July 2023
Basis: May 2023 EPA RSL Table
Site ID: NONCD0000571
Exposure Unit ID: 32311 Nanny Drive - Crawlspace (571-RES-06)
CAS # Chemical Name:
Indoor Air
Concentration
(ug/m3)
Target Indoor
Air Conc. for
Carcinogens @
TCR = 1E-06
Target Indoor Air
Conc. for Non-
Carcinogens @
THQ = 0.2
Calculated
Carcinogenic
Risk
Calculated
Non-
Carcinogenic
Hazard
Quotient
56-23-5 Carbon Tetrachloride 0.18 4.7E-01 2.1E+01 3.8E-07 1.7E-03
127-18-4 Tetrachloroethylene 0.71 1.1E+01 8.3E+00 6.6E-08 1.7E-02
108-88-3 Toluene 0.33 - 1.0E+03 6.3E-05
79-01-6 Trichloroethylene 0.14 4.8E-01 4.2E-01 2.9E-07 6.7E-02
Cumulative: 7.4E-07 8.6E-02
All concentrations are in ug/m3
Output Form 3C
** - Note that the EPA has no consensus on reference dose or cancer slope factor values for lead, therefore it is not possible to calculate
carcinogenic risk or hazard quotient. Lead concentrations are compared to the National Ambient Air Quality Standard of 0.15 μg/m3.
Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Risks are calculated for these values if
indoor air concentrations are entered and indoor air screening levels have been established, but it should be noted that detections of these chemicals
are likely not associated with vapor intrusion.
North Carolina DEQ Risk Calculator
DEQ Risk Calculator - Vapor Intrusion - Non-Residential Worker Indoor Air
Version Date: July 2023
Basis: May 2023 EPA RSL Table
Site ID: NONCD0000571
Exposure Unit ID: 32311 Nanny Drive - Crawlspace (571-RES-06)
CAS # Chemical Name:
Indoor Air
Concentration
(ug/m3)
Target Indoor
Air Conc. for
Carcinogens @
TCR = 1E-06
Target Indoor Air
Conc. for Non-
Carcinogens @
THQ = 0.2
Calculated
Carcinogenic
Risk
Calculated
Non-
Carcinogenic
Hazard
Quotient
56-23-5 Carbon Tetrachloride 0.18 2.0E+00 8.8E+01 8.8E-08 4.1E-04
127-18-4 Tetrachloroethylene 0.71 4.7E+01 3.5E+01 1.5E-08 4.1E-03
108-88-3 Toluene 0.33 - 4.4E+03 1.5E-05
79-01-6 Trichloroethylene 0.14 3.0E+00 1.8E+00 4.7E-08 1.6E-02
Cumulative: 1.5E-07 2.0E-02
All concentrations are in u /3
Output Form 3F
** - Note that the EPA has no consensus on reference dose or cancer slope factor values for lead, therefore it is not possible to calculate carcinogenic risk
or hazard quotient. Lead concentrations are compared to the National Ambient Air Quality Standard of 0.15 μg/m3.
Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Risks are calculated for these values if
indoor air concentrations are entered and indoor air screening levels have been established, but it should be noted that detections of these chemicals are
likely not associated with vapor intrusion.
North Carolina DEQ Risk Calculator