24054_AJACCAuto_Soil Import from DoubleOaks Review Package_20220113

January 13, 2022

Sent Via E-mail Ashton Slate Chris Hustek DreamKey Partners Greystar Development East, LLC
4601 Charlotte Park Drive, Suite 350 521 E Morehead Rd, Suite 400
Charlotte, North Carolina 28217 Charlotte, NC 28202 [e-mail] [e-mail] Subject: Brownfields Soil Management Options
Double Oaks
Charlotte, Mecklenburg County Brownfields Project No. 11037-07-060 Ms. Slate and Mr. Hustek,

The North Carolina Department of Environmental Quality (DEQ) Brownfields Program received an email request dated January 7, 2022 from Centurion Development to export approximately 40,000 cubic yards of soil from the above referenced Brownfields Property.
Based on our review of the data provided, the DEQ Brownfields Program agrees that these soils may be exported to the following options. Up to 10,000 cubic yards of structurally suitable soils detailed in the request may be transferred to the AJACC Auto Brownfields Property (Brownfields Project #24054-20-060). Further, up to the full amount of the stockpile of 40,000 cubic yards may be managed at Old 27 Landfill (1222 Old 27 Highway, Mount Holly, Gaston County, Permit No.
36A-LCOD-2010), or a Construction & Demolition (C&D) Landfill, or a Municipal Solid Waste (MSW) Landfill, or at another Brownfields Property with prior DEQ Brownfields approval. Other options may be available; however, DEQ requires that the receiving facility be identified and approved prior to export. The receiving facility should have metals concentrations which are consistent with those from the Brownfields Property.
All soil export must be conducted under a DEQ Brownfields approved Environmental Management Plan (EMP). Soils should be field screened during excavation prior to export from the property. If unanticipated impacts are identified during excavation, please refer to the EMP
for further actions and cease transfer until appropriate characterization can be completed. In
addition, in accordance with the AJACC EMP, an annual Redevelopment Summary Report will be submitted to DEQ Brownfields. Details related to the disposition of this soil including but not limited to, total volume, general description of field screening efforts, etc. should be included with the Redevelopment Summary Report.

January 13, 2022 Page 2
Please be advised that this approval does not waive any applicable requirement to obtain any
necessary permits, licenses or certifications which may be required from other state or local entities. If you have questions about this correspondence or require additional information, please feel free to contact me by phone at 704-223-6549 or by email at [e-mail].
Sincerely,
Jordan Thompson Peter Doorn
Project Manager Project Manager Brownfields Program Brownfields Program ec: Cody Cannon, Centurion Development

1
Doorn, Peter L
From:Cody Cannon <[e-mail]>
Sent:Friday, January 7, 2022 4:24 PM
To:Thompson, Jordan L
Cc:Ashton Slate; Dan Cimaglia; Doorn, Peter L; Kirill Vladimirovich
Subject:[External] Double Oaks (11037-07-060) Brownfields Soil Transfer Request
Attachments:SoilTransferDataPackage_DoubleOaks(TP2) to AJACC-Auto_001.07.2021.pdf;
SoilTransferDataPackage_DoubleOaksStockpile to LCIDs_01.07.2021.pdf; PD
Confirmation_Brownfields Soil Transfer - Double Oaks to AJACC Auto (ELAN LoSo).pdf; Summary of
Test Pit Exploration.Double Oaks Brownfields Site.9-22-21_DS.pdf; SoilDataTables from Soil Stockpile
Characterization Report_Hart&Hickman_9.22.2021.pdf
Follow Up Flag:Follow up
Flag Status:Completed
CAUTION: External email. Do not click links or open attachments unless you verify. Send all suspicious email as an attachment to 
Report Spam. 

Good Afternoon Jordan, 

Thank you for your time on the phone this week regarding the proposed transfer/disposal of soils from the stockpile 
located at the Double Oaks (11037‐007‐060) Brownfields Property.  As discussed, I am submitting this transfer request 
on behalf of the prospective developer (PD) of the Double Oaks property (DreamKey Partners; Formerly Charlotte 
Mecklenburg Housing Authority).  This request is broken down into two parts including:  

 A Brownfields‐to‐Brownfields transfer request of approximately 10,000 cubic yards (CY) of structurally suitable 
materials from the larger stockpile (approximately 40,000 CY) to the AJACC Auto (24054‐20‐060) Brownfields 
property; and 
 A request for approval to dispose of the entirety of the stockpile (40,000 CY) at one of two local NCDEQ SWS 
permitted Land Clearing & Inert Debris LCID Landfills. 

Two separate data packages for the above referenced requests are attached which include a soil analytical table 
comparing the highest concentrations for detected constituents for applicable soil samples at each site, a comparison 
table of NCDEQ Risk Calculator results showing the worst‐case initial risk indices at the receiving sites and the risk indices 
after the proposed soils from Double Oaks have been transferred, and risk calculation data summaries and outputs for 
each scenario.  Analytical data and associated risk are briefly summarized below for each request. 

Double Oaks (Test Pit 2 Area) Stockpile to AJACC Auto: 

An area of structurally suitable soils (Test Pit 2) was identified in a Summary of Test Pit Exploration report (attached) 
completed by GTA Associates, Inc. on September 22, 2021.  The exact volume of structural fill available is unknown but is 
estimated to be between 8,000 to 10,000 CY.  As such, ten select environmental soil samples (SB‐6 – SB‐10 & SB‐15 – SB‐
19) from the Test Pit 2 area have been used for comparison purposes to the soil data for the AJACC Auto (24054‐20‐060) 
Brownfields property.  Soils from the Double Oaks stockpile were characterized at a frequency of 1 sample per 1,000 
cubic yards in a NCDEQ Brownfields reviewed Soil Stockpile Characterization Report prepared by Hart & Hickman, PC 
dated September 20, 2021.  Soil data for the AJACC Auto Brownfields property were obtained from the NCDEQ 
Brownfields approved Environmental Management Plan (EMP) prepared by Froehling & Robertson, Inc dated August 10, 
2021. 

2
Samples SB‐6 – SB‐10 & SB‐15 – SB‐19 were analyzed for VOCs by EPA 8260, SVOCs via EPA 8270, RCRA metals by EPA 
6020, and Hexavalent Chromium by EPA 7199.    No VOCs or SVOCs were detected above laboratory reporting limits or 
the most stringent NCDEQ Preliminary Soil Remediation Goals (PSRGs). Of the metals analyzed, Arsenic (1.2 mg/kg) and 
Hexavalent Chromium (2.49 mg/kg) were detected at concentrations exceeding their respective Residential 
PSRGs.  However, the AJACC Auto property also contains these constituents at levels greater than the Residential 
PSRGs.  The addition of these soils to the AJACC Auto property results in minimal changes to the Lifetime Incremental 
Cancer Risk (LCIR)) and Non‐Carcinogenic Hazard Index (HI) for all categories.  Lastly, this addition does not result in an 
exceedance of a NCDEQ Risk Threshold for a LICR or HI. 

The PD (Greystar Real Estate Partners)  for the AJACC Auto property has provided intent to receive this material 
provided structural suitability and NCDEQ Brownfields written approval in the attached email correspondence. 

Double Oaks Stockpile to Old 27 LCID (36A‐LCID‐2010) and Reeve’s LCID (60S‐LCID) 

For the entire stockpile present at the Double Oaks property, 40 samples were collected corresponding to an 
approximate total of 40,000 CY (Soil Stockpile Characterization Report) and analyzed for VOCs via EPA 8260, SVOCs by 
EPA 8270, RCRA metals by EPA 6020, and Hexavalent Chromium by EPA 7199.  Several VOCs were detected at low level 
and estimated concentrations from samples predominately located in the southwestern half of the stockpile (SB‐23 – 
SB‐40).  Additionally, Toluene was detected at low levels in every sample reported and the laboratory flagged it as a 
potential laboratory contaminant.  None of the VOCs detected were present above the Protection of Groundwater PSRG 
(or the lowest of the 3 PSRG categories).  The SVOC bis(2‐Ethylhexyl)phthalate was detected in 4 samples but below all 
PSRGs. Arsenic (2.8 mg/kg) and Hexavalent Chromium (2.63 mg/kg) were detected at concentrations above the 
Residential PSRGs, but at concentrations comparable to the highest concentrations detected at Old 27 LCID and Reeve’s 
LCID.   The addition of these soils to the LCIDs referenced results in minimal changes to Non‐Residential LICRs and His 
and does not result in an exceedance of a NCDEQ Risk Threshold. 

Please let me know if I can provide any additional information that could aid in your review.  Of the two requests, the 
entire stockpile to an LCID Landfill is the priority when it comes to timing. Thank you very much for your time and 
consideration. 

Best,  

From:Chris Hustek
To:Cody Cannon
Cc:Michael Innominato
Subject:FW: Brownfields Soil Transfer - Double Oaks to AJACC Auto (ELAN LoSo)
Date:Monday, December 27, 2021 9:47:49 PM
Attachments:image001.pngDoubleOaks_TestPit2_Proctor.pdfStockpile Soil Characterization Report - Double Oaks_ID #11037-07-060.pdf
Importance:High
Cody,
Yes, please go ahead and see if you can get the dirt/source below approved for the LOSO project. Let
Mike and I know what you need if anything. Mike I is the main contact but please keep me CC’d.

Mike,
Lets also send this compaction test to the 3rd party testing group to make sure it will pass the
compaction requirements.

Any questions or Concerns please let me know.

Thank you!

Chris Hustek | Senior Project Manager, Construction
Greystar 521 E Morehead | St #400 | Charlotte, NC 28202
M [phone] | [e-mail]

Overture Cary | Site Address
1055 Hatches Pond Lane
Cary, NC 27560

Elan Indian Trail | Site Address
13700 Independence BLVD or 100 Chestnut Parkway
Indian Trail, NC 28079

From: Cody Cannon <[e-mail]>
Sent: Monday, December 27, 2021 1:03 PM
To: Chris Hustek <[e-mail]>
Subject: [EXTERNAL] FW: Brownfields Soil Transfer - Double Oaks to AJACC Auto (ELAN LoSo)

From: Cody Cannon
Sent: Tuesday, December 21, 2021 10:38 AM
To: [e-mail]
Cc: Kirill Vladimirovich <[e-mail]>
Subject: Brownfields Soil Transfer - Double Oaks to AJACC Auto (ELAN LoSo)

Good Morning Chris,

Thanks for taking time to discuss the opportunity for a Brownfields-to-Brownfields soil transfer
opportunity for your development at the AJACC Auto (24054-20-060) Brownfields property. The
prospective developer (PD) for the Double Oaks (11037-07-060) Brownfields property located at 1301
Newland Road in Charlotte, is seeking to get rid of soils from an estimated 39,000 cubic yard (CY)
stockpile. Geotechnical investigations have identified an area (Test Pit 2) that we estimate can
generate approximately 10,000 CY of structural fill. Please see the attached soil compaction proctor
test for your reference. More suitable material may be found within this stockpile but we won’t know
until we remove the portion from Test Pit 2.

Additionally, the entire stockpile has been environmentally sampled at a NCDEQ-approved frequency
of 1 sample per 1,000 CY of material. The results (attached) indicate that these soils are likely
compatible for a transfer to the AJACC Auto property provided written approval by the NCDEQ
Brownfields Program.

Please reply to this email to confirm your interest in receiving these materials provided they meet
your requirements and a transfer request is approved by the NCDEQ Brownfields Program.

Best,

Sample LocationHighest Detection Double Oaks Stockpile (Test Pit 2 Area)3 Highest Detection Reeve's LCID (60S-LCID)5Highest Detection Old 27 LCID (36A-LCID)6Sample ID SB-6 - SB-10; SB-15 - SB-19 BKG-R-01 through BKG-R-05BG-OL27-4 through BG-OL27-5Sample DateJuly 1, 2021 July 2020 December 2020Range MeanVOCs (8260)Acetone<0.0566NA NA 25 12,000 140,000-- --Methyl Ethyl Ketone (MEK)<0.176NA NA 17 5,500 40,000-- --Methyl tert-Butyl Ether (MTBE)<0.0033NA NA 0.09 49.0 220-- --2-Methylnaphthalene<0.00496NA NA3.1 48 600-- --Benzo(a)Anthracene<0.00496NA NA0.35 1.1 21-- --Benzo(a)Pyrene<0.00496NA NA0.12 0.11 2.1-- --Benzo(b)Fluoranthene<0.00496NA NA1.2 1.1 21-- --Benzo(g,h,i)Perylene<0.00496NA NA NS NS NS-- --Benzo(k)fluoranthene<0.00496NA NA 12 11 210-- --Chrysene<0.00496NA NA 36 1102,100-- --Ethyl Tertiary Butyl Ether (ETBE)<0.00496NA NA NS NS NSFluoranthene<0.00496NA NA670 480 6,000-- --Indeno(1,2,3-cd)Pyrene<0.00496NA NA3.9 1.1 21-- --Naphthalene<0.00496NA NA0.39 2.1 8.8-- --Phenanthrene<0.00496NA NANS NS NS-- --Pyrene<0.00496NA NA440 360 4,500-- --Arsenic1.23.0 2.7 5.8 0.68 3.0 1.0 - 18 4.8Barium 260 150 220 580 3,100 47,000 50 - 1,000 356Cadmium 0.035 J 0.13 J<0.0513.0 14 200 1.0 - 10 4.3Chromium (total) 110 58 90 NS NS NS 7.0 - 300 65Chromium (trivalent) 108.31 57.76 90 360,000 23,000 350,000 NS NSChromium (hexavalent)2.49 0.43 J 2.03.8 0.31 6.5 NS NSLead 22.0 29 18 270 400 800 ND - 50 16Mercury 0.058 0.097 0.074 1.0 2.3 9.7 0.03 - 0.52 0.121Selenium 0.92 J 6.4 4.1 2.1 78 1,200 <0.1 - 0.8 0.42Silver 0.08 J 0.54 J<0.0713.4 78 1,200 ND - 5.0 NSNotes:Soil concentrations are reported in milligrams per kilogram (mg/kg).Bold value exceeds the residential PSRG. Laboratory analytical methods are shown in parentheses.VOCs = volatile organic compounds; SVOCs = semi-volatile organic compounds; RCRA = Resource Conservation and Recovery Act NS = not specified; ND = non-detect; -- = not applicable; NA = not analyzedJ = estimated value between the laboratory method detection limit and the reporting limitSVOCs (8270)Highest Detection - Proposed Brownfields Receiving Site (AJACC Auto)40.057 JTable 1Soil Comparison Table - Double Oaks Brownfields Property (11037-07-060) 1302 & 1304 Newland Rd, Charlotte, NC 282160.028 J0.059 J0.065 JRegional Background Metals In Soil2SB-1 through SB-5Residential PSRGs1Industrial/ CommercialPSRGs1April 2021Protection of Groundwater PSRGs1Screening Criteria0.0370.002 J0.0190.037 J0.077 J0.117 J0.045 J0.021 J0.105 J0.087 J0.126 J0.0008 J2) Range and mean values of background metals taken from Elements in North Amereican Soils by Dragun and Chekiri, 2005.4) AJACC Auto data was obtained from the NCDEQ Brownfields approved Environmental Mangement Plan prepared by Froehling & Robertson, Inc. dated August 10, 20215) Reeve's LCID data were obtained from Table 2 of the Soil Management Options Letter prepared for NCDEQ by Hart & Hickman, PC on August 7, 2020 6) Old 27 LCID data were obtained from Table 2 of the Background Soil Asssessament Report preapred for NCDEQ by Hart & Hickman, PC on May 11, 20210.0587 J3) Double Oaks data was obtained from the Stockpile Soil Characterization Report prepared by Hart & Hickman, PC dated September 20, 2021. Metals (6020/7471/7199)56.35.480.07051) North Carolina Department of Environmental Quality (DEQ) Inactive Hazardous Sites Branch (IHSB) Preliminary Soil Remediation Goals (PSRGs) (June 2021)0.281 J59.358.730.57 J3.4633
Category LICR HI
Resident 7.90E-06 1.70E-01
Non-Resident Worker 1.30E-06 1.30E-02
Construction Worker 3.60E-07 1.40E-01
Trespasser 4.40E-06 9.10E-02
Category LICR HI
Resident 1.40E-05 1.80E-01
Non-Resident Worker 1.60E-06 1.30E-02
Construction Worker 8.90E-07 1.50E-01
Trespasser 7.90E-06 9.60E-02
LICR = Lifetime Incremental Cancer Risk
HI = Non-Carcinogenic Hazard Index
Table 2
AJACC Auto (24054-20-060)
Double Oaks (11037-07-060) Stockpile (Test Pit 2) to AJACC Auto (24054-20-060)
Risk Exceeded?
Risk Exceeded?
NO
NO
NO
NO
NO
NO
NO
NO
Soil Risk Calculator Comparison
Version Date:
Basis:
Site Name:
Site Address:
DEQ Section:
Site ID:
Exposure Unit ID:
Submittal Date:
Reviewed By:
12/28/2021
Prepared By:Cody Cannon, P.G.
North Carolina Department of Environmental Quality
Risk Calculator
AJACC Auto
301 Verbena Street
Brownfields Program
24054-20-060
June 2021
May 2021 EPA RSL Table
North Carolina DEQ Risk Calculator
Exposure Point Concentrations
Version Date: June 2021
Basis: May 2021 EPA RSL Table
Site ID: 24054-20-060
Exposure Unit ID:
NOTE: If the chemical list is changed from a prior calculator run, remember to select "See All Chemicals" on the data output sheet or newly added chemicals will not be included in risk calculations
Exposure Point
Concentration
(mg/kg)
Notes:CAS Number
Chemical
For the chemicals highlighted in blue, data entry notes are provided in the
PSRG Table link on the Main Menu
Minimum
Concentration
(Qualifier)
Maximum
Concentration
(Qualifier)
Units
Location of
Maximum
Concentration
Detection
Frequency
Range of
Detection Limits
Concentration
Used for
Screening
Background
Value
Screening
Toxicity Value
(Screening
Level) (n/c)
Potential
ARAR/TBC
Value
Potential
ARAR/TBC
Source
COPC
Flag
(Y/N)
Rationale for
Selection or
Deletion
0.037 67-64-1 Acetone mg/kg SB-1 (1-3)
3.4 7440-38-2 Arsenic, Inorganic mg/kg SB-1 (1-3)
633 7440-39-3 Barium mg/kg SB-1 (1-3)
0.281 7440-43-9 Cadmium (Diet)J mg/kg SB-3 (1-3)
59.3 16065-83-1 Chromium(III), Insoluble Salts mg/kg SB-1 (1-3)
0.57 18540-29-9 Chromium(VI)J mg/kg SB-1 (1-3)
56.3 7439-92-1 ~Lead and Compounds mg/kg SB-3 (1-3)
0.0587 7439-97-6 ~Mercury (elemental)J mg/kg SB-1 (1-3)
0.002 78-93-3 Methyl Ethyl Ketone (2-Butanone)J mg/kg SB-1 (1-3)
0.019 1634-04-4 Methyl tert-Butyl Ether (MTBE)mg/kg SB-3 (1-3)
0.059 56-55-3 ~Benz[a]anthracene J mg/kg SB-1 (1-3)
0.087 50-32-8 ~Benzo[a]pyrene J mg/kg SB-3 (1-3)
0.126 205-99-2 ~Benzo[b]fluoranthene J mg/kg SB-3 (1-3)
0.037 207-08-9 ~Benzo[k]fluoranthene J mg/kg SB-1 (1-3)
0.077 218-01-9 ~Chrysene J mg/kg SB-3 (1-3)
0.117 206-44-0 ~Fluoranthene J mg/kg SB-1 (1-3)
0.045 193-39-5 ~Indeno[1,2,3-cd]pyrene J mg/kg SB-1 (1-3)
0.028 91-57-6 ~Methylnaphthalene, 2-J mg/kg SB-1 (1-3)
0.021 91-20-3 ~Naphthalene J mg/kg SB-1 (1-3)
0.105 129-00-0 ~Pyrene J mg/kg SB-1 (1-3)
5.48 7782-49-2 Selenium mg/kg SB-3 (1-3)
Input Form 2A
Soil Exposure Point Concentration Table
Description of Exposure Point Concentration Selection:
North Carolina DEQ Risk Calculator
Risk for Individual Pathways Output Form 1A
Version Date: June 2021
Basis: May 2021 EPA RSL Table
Site ID: 24054-20-060
Exposure Unit ID:
Receptor Pathway Carcinogenic
Risk Hazard Index Risk exceeded?
Soil 7.9E-06 1.7E-01 NO
Groundwater Use*NC NC NC
Soil 1.3E-06 1.3E-02 NO
Groundwater Use*NC NC NC
Construction Worker Soil 3.6E-07 1.4E-01 NO
Soil 4.4E-06 9.1E-02 NO
Surface Water*NC NC NC
Receptor Pathway Carcinogenic
Risk Hazard Index Risk exceeded?
Groundwater to Indoor Air NC NC NC
Soil Gas to Indoor Air NC NC NC
Indoor Air NC NC NC
Groundwater to Indoor Air NC NC NC
Soil Gas to Indoor Air NC NC NC
Indoor Air NC NC NC
Pathway Source
Source Soil NC
Source Groundwater NC
Source Soil NC
Source Groundwater NC
3. NM = Not Modeled
4. NC = Pathway not calculated
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
Version Date:
Basis:
Site Name:
Site Address:
DEQ Section:
Site ID:
Exposure Unit ID:
Submittal Date:
Reviewed By:
12/28/2021
Prepared By:Cody Cannon, P.G.
North Carolina Department of Environmental Quality
Risk Calculator
Double Oaks (Test Pit 2) to AJACC Auto
1302 Newland Rd, Charlotte NC to 301 Verbena St, Charlotte NC
Brownfields Program
11037-07-060 & 24054-20-060
June 2021
May 2021 EPA RSL Table
North Carolina DEQ Risk Calculator
Exposure Point Concentrations
Version Date: June 2021
Basis: May 2021 EPA RSL Table
Site ID: 11037-07-060 & 24054-20-060
Exposure Unit ID:
NOTE: If the chemical list is changed from a prior calculator run, remember to select "See All Chemicals" on the data output sheet or newly added chemicals will not be included in risk calculations
Exposure Point
Concentration
(mg/kg)
Notes:CAS Number
Chemical
For the chemicals highlighted in blue, data entry notes are provided in the
PSRG Table link on the Main Menu
Minimum
Concentration
(Qualifier)
Maximum
Concentration
(Qualifier)
Units
Location of
Maximum
Concentration
Detection
Frequency
Range of
Detection Limits
Concentration
Used for
Screening
Background
Value
Screening
Toxicity Value
(Screening
Level) (n/c)
Potential
ARAR/TBC
Value
Potential
ARAR/TBC
Source
COPC
Flag
(Y/N)
Rationale for
Selection or
Deletion
0.037 67-64-1 Acetone mg/kg SB-1 (1-3)
3.4 7440-38-2 Arsenic, Inorganic mg/kg SB-1 (1-3)
633 7440-39-3 Barium mg/kg SB-1 (1-3)
0.281 7440-43-9 Cadmium (Diet)J mg/kg SB-3 (1-3)
110 16065-83-1 Chromium(III), Insoluble Salts mg/kg Double Oaks SB-10
2.49 18540-29-9 Chromium(VI)mg/kg Double Oaks SB-19
56.3 7439-92-1 ~Lead and Compounds mg/kg SB-3 (1-3)
0.058 7439-97-6 ~Mercury (elemental)J mg/kg SB-1 (1-3)
0.002 78-93-3 Methyl Ethyl Ketone (2-Butanone)J mg/kg SB-1 (1-3)
0.019 1634-04-4 Methyl tert-Butyl Ether (MTBE)mg/kg SB-3 (1-3)
0.059 56-55-3 ~Benz[a]anthracene J mg/kg SB-1 (1-3)
0.087 50-32-8 ~Benzo[a]pyrene J mg/kg SB-3 (1-3)
0.126 205-99-2 ~Benzo[b]fluoranthene J mg/kg SB-3 (1-3)
0.037 207-08-9 ~Benzo[k]fluoranthene J mg/kg SB-1 (1-3)
0.077 218-01-9 ~Chrysene J mg/kg SB-3 (1-3)
0.117 206-44-0 ~Fluoranthene J mg/kg SB-1 (1-3)
0.045 193-39-5 ~Indeno[1,2,3-cd]pyrene J mg/kg SB-1 (1-3)
0.028 91-57-6 ~Methylnaphthalene, 2-J mg/kg SB-1 (1-3)
0.021 91-20-3 ~Naphthalene J mg/kg SB-1 (1-3)
0.105 129-00-0 ~Pyrene J mg/kg SB-1 (1-3)
5.48 7782-49-2 Selenium mg/kg SB-3 (1-3)
0.08 7440-22-4 Silver J mg/kg Double Oaks SB-9
Input Form 2A
Soil Exposure Point Concentration Table
Description of Exposure Point Concentration Selection:
North Carolina DEQ Risk Calculator
Risk for Individual Pathways Output Form 1A
Version Date: June 2021
Basis: May 2021 EPA RSL Table
Site ID: 11037-07-060 & 24054-20-060
Exposure Unit ID:
Receptor Pathway Carcinogenic
Risk Hazard Index Risk exceeded?
Soil 1.4E-05 1.8E-01 NO
Groundwater Use*NC NC NC
Soil 1.6E-06 1.3E-02 NO
Groundwater Use*NC NC NC
Construction Worker Soil 8.9E-07 1.5E-01 NO
Soil 7.9E-06 9.6E-02 NO
Surface Water*NC NC NC
Receptor Pathway Carcinogenic
Risk Hazard Index Risk exceeded?
Groundwater to Indoor Air NC NC NC
Soil Gas to Indoor Air NC NC NC
Indoor Air NC NC NC
Groundwater to Indoor Air NC NC NC
Soil Gas to Indoor Air NC NC NC
Indoor Air NC NC NC
Pathway Source
Source Soil NC
Source Groundwater NC
Source Soil NC
Source Groundwater NC
3. NM = Not Modeled
4. NC = Pathway not calculated
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