22054 2100 S Tryon Brownfields Assessment Report 20190301

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Brownfields Assessment Report
Additional Soil Gas Sampling Activities
2100 S. Tryon Street
Charlotte, North Carolina Brownfields Project #22054-18-060
H&H Job No. VBG-013

Table of Contents

1.0 Introduction and Background ...............................................................................................1
2.0 Additional Soil Gas Assessment Activities ............................................................................4
2.1. Utility Locating .....................................................................................................................4
2.2 Soil Gas Point Installation .....................................................................................................4
2.3 Soil Gas Point Leak Checks ..................................................................................................5
2.4 Soil Gas Sampling .................................................................................................................6
2.5 QA/QC Process......................................................................................................................6
3.0 Soil Gas Sampling Results ......................................................................................................8
3.1 Soil Gas Sample Analytical Results ......................................................................................8
3.2 Soil Gas Sample Risk Calculations .......................................................................................8
4.0 Summary and Conclusions...................................................................................................10

List of Tables

Table 1 Summary of Soil Gas Analytical Data

List of Figures

Figure 1 Site Location Map
Figure 2 Sample Location Map

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List of Appendices

Appendix A Boring Logs
Appendix B Laboratory Analytical Report
Appendix C Cumulative Risk Calculation Output

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Brownfields Assessment Report
Additional Soil Gas Sampling Activities
2100 S. Tryon Street
Charlotte, North Carolina Brownfields Project #22054-18-060
H&H Job No. VBG-013

1.0 Introduction and Background

On behalf of the prospective developer (PD) VV 2100 Development, LLC c/o Vision Ventures of
Carolina, Hart & Hickman, PC (H&H) has prepared this Brownfields Assessment Report
documenting additional soil gas sampling activities conducted at the 2100 S. Tryon Street
Brownfields property located at 2100 S. Tryon Street in Charlotte, Mecklenburg County, North
Carolina (Site). The Site consists of two contiguous parcels of vacant land located southwest of
the intersection of S. Tryon Street and W. Tremont Avenue that total approximately 2.82 acres in
area. A Site location map is provided as Figure 1.

The Site received eligibility into the North Carolina Department of Environmental Quality
(DEQ) Brownfields Program via a Letter of Eligibility dated October 4, 2018 (Brownfields
Project #22054-18-060). As part of this process, a data gap meeting was held with the DEQ
Brownfields project manager, Mr. William Schmithorst, at H&H’s office in Charlotte, NC on
October 23, 2018 to discuss the Site history, proposed redevelopment plans, previous assessment
results, data gaps, and the proposed schedule for completing the Brownfields Agreement.

H&H previously conducted Phase I ESA activities at the Site in July 2018 and identified the
following environmental concerns:

• A former Sunoco gas station #1181 operated in the northeastern portion of the Site from
1957 until the gas station closed in the 1970s. Petroleum releases were discovered during
removal of underground storage tanks (USTs) from the subject Site.

• Non-petroleum UST related chlorinated solvents, including tetrachloroethene (PCE) were
detected in groundwater samples collected on the subject Site at concentrations above the

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NC 2L Groundwater Quality Standard (2L Standard).

• Marathon/Petro-Express (formerly known as Conoco Store #33012, Circle K #2723935,
and Kayo Oil, 2200 S. Tryon Street) is a gas station/convenience store located adjacent,
southeast, and topographically upgradient of the subject Site. In September 1991, soil
and groundwater contamination was discovered during the removal of gasoline USTs and
associated product lines.

Based on the Phase I ESA findings, H&H conducted Phase II ESA activities at the Site in
September 2018 to evaluate potential risks at the Site associated with future Site development for
commercial purposes. The September 2018 Phase II ESA activities included the collection of
soil, groundwater, and soil gas samples at the subject Site.

To evaluate the potential for vapor intrusion associated with the future Site buildings, H&H
collected soil gas samples from seven (7) locations at the Site (SG-1 through SG-7). The results
of the September 2018 soil gas sampling activities indicated the following:

• Multiple petroleum-related volatile organic compounds (VOCs) were detected at
concentrations above DEQ Division of Waste Management (DWM) Soil Gas Screening
Levels (SGSLs). To further evaluate the detected compounds, H&H input the
concentrations of the compounds in each sample into the DEQ Risk Calculator (February
2018 Version) to calculate cumulative potential carcinogenic and non-carcinogenic risks
for the soil gas samples. Risk calculations indicated that soil gas concentrations
associated with one sample, SG-2 collected near the former UST basin in the northeastern
portion of the Site, exceeded the DEQ acceptable risk threshold under a non-residential
use scenario.

• PCE was detected at a concentration above the Residential SGSL but below the Non-
Residential SGSL in one soil gas point sample (SG-1) collected in the northwestern
portion of the Site. However, the cumulative potential carcinogenic and non-carcinogenic
risks in the SG-1 sample were acceptable under both residential and non-residential use
scenarios.

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Upon review of the Phase I and II ESA documents, DEQ requested that H&H conduct the
following activities: 1) prepare a Work Plan for DEQ approval, and 2) install and sample two (2)
additional temporary subsurface soil gas points (SG-8 and SG-9). The additional assessment was
conducted to assess soil vapor concentrations near the utility easements along W. Tremont
Avenue and S. Tryon Street in the northeastern portion of the Site to further evaluate worker
risks associated with future redevelopment activities. A discussion of the methods, analytical
results, and conclusions of the additional Brownfields assessment activities are provided in the
following sections.

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2.0 Additional Soil Gas Assessment Activities

The assessment activities were performed in general accordance with the DEQ Inactive
Hazardous Sites Branch (IHSB) Guidelines for Assessment and Cleanup dated October 2015, the
DEQ DWM Vapor Intrusion Guidance dated April 2014 and March 2018, and most recent
version of the US Environmental Protection Agency (EPA) Region IV Science and Ecosystem
Support (SESD) Field Branches Quality System and Technical Procedures guidance. The
Brownfields additional assessment activities were conducted in accordance with the DEQ-
approved Work Plan dated December 21, 2018.

2.1. Utility Locating

Prior to conducting soil gas sampling activities, H&H contacted North Carolina 811, the public
utility locator, to mark subsurface utilities located on the Site. H&H also contracted a private
utility locator, Probe Utility, LLC (Probe), to screen the proposed soil gas sample locations for
subgrade utilities using ground-penetrating radar (GPR) and electromagnetic methods prior to the
sampling event. Additionally, H&H directed the drilling contractor to hand clear each boring to
a depth of approximately 5 feet below ground surface (ft bgs) to further screen the soil gas
sample locations for the presence of subsurface utilities.

2.2 Soil Gas Point Installation

On January 18, 2019, H&H and MidSouth Environmental, Inc. (MidSouth), a North Carolina
licensed driller, mobilized the Site to install two temporary soil gas points (SG-8 and SG-9). The
soil gas points were installed via direct-push technology (DPT) drilling methods. The soil gas
points were initially hand cleared to a depth of approximately 5 ft bgs using a hand auger to clear
the borings of potential subsurface utilities. MidSouth further advanced the borings using DPT
methods to a depth of approximately 3-5 ft above the water table and at least 5 ft below grade.

During previous Phase II ESA activities conducted in September 2018, groundwater was

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encountered at a depth of approximately 20 ft bgs in the northeastern portion of the Site.
However, while advancing the SG-8 and SG-9 soil borings, H&H encountered groundwater at a
depth of approximately 15 ft bgs. Based on the apparent high seasonal groundwater conditions at
the Site, H&H installed soil gas points SG-8 and SG-9 to depths of 11 ft bgs and 12 ft bgs,
respectively.

During advancement of the boreholes, soil recovered from the hand auger and the DPT sampler
was described for lithologic purposes and screened for the presence of odors, staining, and for
organic vapors utilizing a calibrated photo-ionization detector (PID). Field PID readings of the
recovered soil cuttings ranged from 0.7 parts per million (ppm) to 4.5 ppm for soil gas point SG-
8 and 0.6 ppm to 4.2 ppm for soil gas point SG-9 (refer to Appendix A for soil boring details).

The soil gas points were constructed with a 6-inch long screen point fitted with Teflon® tubing
that extended to the surface. The screen point was set at 10.5-11 ft bgs for soil gas point SG-8
and 11.5-12 ft bgs for soil gas point SG-9. Sand was installed in the borehole around the screen
point to approximately 6-inches above the top of each screen. Following installation of the sand,
hydrated bentonite was installed from the top of the sand to ground surface. Following the
installation, H&H purged approximately three volumes of vapor from each screen point and
Teflon® tubing using a dedicated syringe provided by the laboratory. Following purging, the soil
gas points were allowed to stabilize and the Teflon® tubing was capped at the surface and
enclosed inside a PVC cover.

2.3 Soil Gas Point Leak Checks

On January 22, 2019, H&H remobilized to the Site to sample the SG-8 and SG-9 soil gas points.
H&H performed a field leak check at each soil gas point which consisted of placing a temporary
shroud around the above ground portion of the sampling point and saturating the air within the
shroud with helium gas. H&H measured the concentration of helium gas in the shroud at each
soil point using a helium gas detector. Helium was identified at concentrations of 80.3% and
80.7% in the SG-8 and SG-9 shrouds, respectively. Vapor was then purged from each soil gas
point using a dedicated syringe provided by the laboratory and sampled outside of the shroud into

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a separate Tedlar® bag. The vapor was analyzed using the helium gas detector to ensure that
helium concentrations from the soil gas points were less than 10% of the helium concentrations
in the shroud. Helium was not detected in vapor from either soil gas point above 0.0 ppm. Five
minute shut-in leak tests were performed on each Summa canister and sampling train prior to
sampling. Each Summa canister and sampling train passed said shut-in test prior to sampling.

2.4 Soil Gas Sampling

Following a successful leak check, H&H collected soil gas samples into six-liter stainless steel
Summa canisters for laboratory analysis by connecting the Teflon® sample tubing to an airflow
regulator using a brass nut and ferrule assembly to create an air tight seal. The airflow regulator
was calibrated by the laboratory to allow the Summa canisters to fill slowly at a rate not greater
than 200 milliliters per minute. During collection of the samples, H&H recorded measurements
of ambient temperature at the beginning, middle, and end of the sampling day and precipitation,
if any, was noted. Vacuum readings during sample collection were recorded in a field book at
approximate 15 minute-intervals during the sampling event. During sampling, H&H field staff
monitored the cannisters to verify that the vacuum did not reach zero. The vacuum pressure in
each Summa canister upon completion of the sampling event was between four and five inches of
mercury. Following sample collection, the Summa canisters were shipped to Pace Analytical
Laboratories, Inc. (Pace), a nationally accredited laboratory, under standard chain of custody
protocols for analysis of VOCs by EPA Method TO-15. Upon receipt of the samples, the
laboratory recorded the final received vacuum pressure for each Summa canister. Following
sampling completion, the soil gas monitoring points were then estimated (horizontal and vertical
elevations) using a sub-meter GPS unit.

2.5 QA/QC Process

H&H utilized standard quality assurance/quality control (QA/QC) processes during the
Brownfields assessment activities. Non-dedicated sampling equipment, including DPT tooling
and the hand auger, were decontaminated using Liquinox® detergent and deionized water prior to
and between each soil gas point locations. H&H and MidSouth wore nitrile gloves while

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handling samples, and the soil gas samples were collected using dedicated tubing.

For quality control purposes, H&H collected one duplicate soil gas sample (DUP-1) from soil gas
point SG-8. The DUP-1 soil gas sample was analyzed for VOCs by EPA Method TO-15.

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3.0 Soil Gas Sampling Results

The results of analysis of the soil gas samples are summarized in Table 1 and the laboratory
analytical data report and chain of custody record are included in Appendix B.

Laboratory analytical results of the soil gas samples were compared to the DEQ DWM
Residential and Non-Residential Exterior Soil Gas Screening Levels (SGSLs) dated February
2018. These screening levels are very conservative and are based upon a lifetime incremental
cancer risk (LICR) of 1 x 10-5 for potential carcinogenic effects and/or a Hazard Index (HI) of 0.2
for potential non-carcinogenic effects. Vapor intrusion mitigation is not usually considered
unless the LICR exceeds the DEQ acceptable risk of 1 x 10-4 for potential carcinogenic effects
and a HI of 1 for potential non-carcinogenic effects. Planned redevelopment of the subject Site
will be for commercial purposes only; therefore, the following discussions primarily focus on
comparison of the data to the Non-Residential SGSLs and non-residential worker risks.

3.1 Soil Gas Sample Analytical Results

Laboratory analytical results for the soil gas samples (SG-8/DUP-1 and SG-9) identified
detections of VOCs in each of the samples at concentrations above laboratory detection limits.
With the exception of naphthalene, all of the of VOC constituents were detected at
concentrations below their respective Residential SGSL. Naphthalene was detected in soil gas
sample DUP-1 at a concentration of 36.4 µg/m3, which is above the Residential SGSL of 20
µg/m3 but below the non-Residential SGSL of 260 µg/m3. Please note that naphthalene (< 4.1
µg/m3) was not detected above the laboratory detection limit in the parent sample SG-8.

3.2 Soil Gas Sample Risk Calculations

To further evaluate the detected compounds in the soil gas samples, H&H input the
concentrations of the compounds into the DEQ Risk Calculator (February 2018 Version) to
calculate cumulative potential carcinogenic and non-carcinogenic risks based on future intended

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use in the northeastern portion of the Site. H&H ran calculations for both residential and non-
residential use scenarios of the soil gas to indoor air exposure pathway to calculate cumulative
potential carcinogenic and non-carcinogenic risks for the soil gas samples. Copies of the
calculations are provided in Appendix C and a summary of the calculated LICs and HIs for the
SG-8/DUP-1 and SG-9 samples is provided below:

Sample ID
Resident Risk
Exceeded?
Non-Residential Worker Risk
Exceeded? Calculated
LICR
Calculated
HI
Calculated
LICR
Calculated
HI
SG-8 1.7E-07 7.4E-03 NO 1.3E-08 5.9E-04 NO
DUP-1
(SG-8) 1.6E-05 3.7E-01 NO 1.2E-06 0.029 NO
SG-9 1.8E-08 5.4E-03 NO 1.4E-09 4.3E-04 NO
Notes: 1) Results based on the DEQ Risk Calculator for Residential Use Scenario of the Soil Gas to Indoor Air Exposure Pathway (February 2018)
2) Results based on the DEQ Risk Calculator for Non-Residential Worker Use Scenario of the Soil Gas to Indoor Air Exposure Pathway (February 2018)

As indicated above, the calculated LICRs for SG-8/DUP-1 and SG-9 were within or less than the
acceptable risk range of 1 x 10-4 to 1 x 10-6 and the calculated HIs for SG-8/DUP-1 and SG-9
were less than 1 under both residential and non-residential use scenarios. Based on the risk
calculations, soil gas concentrations in the northeastern portion of the Site, near the utility
easements along S. Tryon Street and W. Tremont Avenue indicate acceptable carcinogenic and
non-carcinogenic risks under both residential and non-residential use scenarios.

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4.0 Summary and Conclusions

H&H has completed additional Brownfields assessment activities at the 2100 S. Tryon Street
Brownfields property (Brownfields Project #22054-18-060) located at 2100 S. Tryon Street in
Charlotte, North Carolina. The additional assessment was conducted to assess soil vapor
concentrations near the utility easements along W. Tremont Avenue and S. Tryon Street in the
northeastern portion of the Site to further evaluate worker risks associated with future
redevelopment activities. The assessment activities included the collection of two additional soil
gas samples. A summary of the results of the assessment activities is provided below.

• The results of the soil gas assessment indicate that no VOCs were detected in the
additional soil gas samples (SG-8 and SG-9) or duplicate sample at concentrations
exceeding the DEQ DWM Non-Residential SGSLs.

• The results of the cumulative risk calculations for SG-8 and SG-9 collected near the
utility easement along W. Tremont Avenue and S. Tryon Street indicate acceptable
carcinogenic and non-carcinogenic risks under both residential and non-residential use
scenarios.

Table
Table 1Summary of Soil Gas Analytical Data2100 S Tryon StreetCharlotte, North CarolinaH&H Job No. VBG-013Sample IDSG-1SG-2SG-3SG-DUP (SG-3)SG-4SG-5SG-6SG-7SG-8DUP-1 (SG-8)SG-9Sample Date8/22/2018 8/22/2018 8/22/2018 8/22/2018 8/22/2018 8/22/2018 8/22/2018 8/22/20181/22/20191/22/20191/22/2019Screen Depth (ft bgs)7.5-812.5-1312.5-1312.5-138.5-98.5-97.5-84.5-510.5-1110.5-1111.5-12Unitsµg/m³µg/m³µg/m³µg/m³µg/m³µg/m³µg/m³µg/m³µg/m³µg/m³µg/m³Location DescriptionCentral Portion of the SiteFormer Rail SpurSouthern Portion of the SiteS. Tryon Street Utility EasementVOCs (TO-15)Acetone9.4<10,60011.215.135.0 J10.64.23607.734.9<3.6220,0002,700,000Benzene7.386,6005.84.370.01080.8731.71.72.1<0.481201,600Bromomethane<0.39<1,990<0.35<0.36<4.0<0.36<0.370.39 J<1.2<1.2<1.2354402-Butanone (MEK)<0.63<3,230<0.57<0.58<6.5<0.58<0.5957.5<4.610.9<4.535,000440,000Carbon disulfide56.4<1,92023.025.11954943.220.918.420.16.44,90061,000Carbon tetrachloride<0.73<3,760<0.66<0.68<7.5<0.68<0.691.2 J<2.0<1.9<1.91602,000Chlorobenzene<1.6<8190<1.5<1.5<16.4<1.5<1.5<1.6<1.54.4<1.43504,400Chloroform6.5<1,72014.814.5<3.4<0.310.45 J0.70 J<0.77<0.74<0.7441530Chloromethane<0.27<1,370<0.240.34 J<7.4<0.250.40 J0.76<0.65<0.63<0.636307,900Cyclohexane20.3<3,090<0.55<0.56<6.254.90.83 J1.7 J<2.70.70 J<2.642,000530,0001, 2-Dichlorobenzene<2.1<10700<1.9<1.9<21.4<1.9<2.0<2.1<1.98.6<1.81,40018,0001, 4-Dichlorobenzene<1.7<8,760<1.6<1.6<17.5<1.6<1.65.6<4.718.7<4.6851,100Dichlorodifluoromethane2.3<2,5701.82.0<5.12.11.82.71.61.51.3 J7008,800Ethyl acetate1.5<1,660<0.29<0.30<3.3<0.30<0.313.6<1.11.4<1.12,70011,000Ethylbenzene37.6318,00030.124.93945118.74.30.72 J1.2 J<1.33704,9004-Ethyltoluene12.498,6008.46.81231592.9 J3.5 J<3.9<3.7<3.7NENEn-Heptane28.4537,00021.112.1127143<0.615.01.2 J<1.2<1.22,80035,000n-Hexane26.6486,00013.75.166.952.61.1 J7.92.24.4<1.14,90061,000Methylene Chloride13.5<8,2604.6 J4.8 J<16.53.9 J5.6 J4.3 J1.9 J17.11.9 J4,20053,0004-Methyl-2-pentanone (MIBK)<0.89<4,540<0.80<0.82<9.1<0.82<0.831.1 J<6.4<6.2<6.221,000260,000Naphthalene3.8 J20,100 J3.4 J3.4 J40.6 J3.9 J3.3 J4.8<4.136.4<4.021260Propylene71.9<1,2502.63.3<2.570.71.7<0.2450.254.85.378330Styrene<0.59<3,010<0.53<0.54<6.0<0.54<0.55<0.59<1.30.76 J<1.37,00088,000Tetrachloroethene (PCE)443<2,7502.43.41851.8<0.511.43.66.56.42803,500Tetrahydrofuran<0.45<2,290<0.40<0.41<4.6<0.41<0.9718.5<0.93<0.89<0.8914,000180,000Toluene1439,07098.61011,5102,26023.721.36.112.2<1.135,000440,000Trichloroethene<0.44<2,250<0.40<0.41<4.5<0.41<0.41<0.44<0.85<0.81<0.8114180Trichlorofluoromethane18.1<3,2001.1 J0.99 J<6.41.6 J1.0 J2.31.0 J1.2 J1.5 JNSNS1,2,4- Trimethylbenzene19.3224,00018.114.12873756.314.0<1.53.5<1.54205,3001,3,5- Trimethylbenzene6.8134,0006.04.478.81092.43.7<1.51.4 J<1.54205,300m&p- Xylenes106314,00088.084.61,2501,79028.320.02.4 J6.3<2.67008,800o- Xylene40.44,000 J25.225.841058810.37.01.63.2<1.37008,800Notes:1) North Carolina Department of Environmental Quality (DEQ) Division of Waste Management (DWM) Residential Soil Gas Screening Levels (SGSLs), February 20182) North Carolina DEQ DWM Non-Residential SGSLs, February 2018EPA Method number follows parameter in parenthesisBold concentrations exceed DEQ DWM Residential SGSLsBold and Underlined concentrations exceed DEQ DWM Residential and Non-Residential SGSLsft bgs = feet below ground surface; NE = not establishedµg/m³ = micrograms per cubic meterOnly those compounds detected in at least one sample shown above, with the exception of trichloroetheneJ = result is less than the laboratory reporting limit but greater than or equal to the method detection limit. The concentration is a lab calculated approximate value.Screening Criteria Former Sunoco Gas StationW. Tremont Avenue Utility Easement Residential Soil Gas Screening Level1 (µg/m³) Non-Residential Soil Gas Screening Level2 (µg/m³)S:\AAA-Master Projects\Vision Brokerage- VBG\VBG-013 2100 S. Tryon Street\Phase II ESA\Tables\Data Tables3/1/2019Table 1 Hart & Hickman, PC

Figures
TITLE
PROJECT
SITE LOCATION MAP
2100 S. TRYON STREET
CHARLOTTE, NORTH CAROLINA
DATE:
JOB NO:
REVISION NO:
FIGURE:
6/15/2018 0
1VBG-013
SITE
0 2000 4000
APPROXIMATE
SCALE IN FEET
N
U.S.G.S. QUADRANGLE MAP
QUADRANGLE
7.5 MINUTE SERIES (TOPOGRAPHIC)
CHARLOTTE EAST, NORTH CAROLINA 1991
GAS FIRED PRODUCTS
(421 WEST TREMONT AVENUE)SOUTH TRYON STREETWEST TREM
O
N
T

A
V
E
N
U
E
CAROLINA CORE RECYCLING
(511-567 WEST TREMONT AVENUE)
INNER PEAKS CLIMBING
(FORMER DIXIE ELECTRONICS)
(2220 SOUTH TRYON STREET)
MARATHON/PETRO
EXPRESS GAS STATION
K9 PLAYLAND
(2139 SOUTH TRYON STREET)
KEG'N'QUE
(2135 SOUTH TRYON STREET)
BEST IN TECH
(2123 SOUTH TRYON STREET)
NEONWORKS
(2115 SOUTH TRYON STREET)
ENVIRONMENT SERVICES
OF CHARLOTTE
(2107 SOUTH TRYON STREET)
FORMER VCC
FORMER TREMONT MUSIC HALL
(400 WEST TREMONT AVENUE)
SOUTH TRYON COMMERCIAL
(2025 SOUTH TRYON STREET)
PRETTY-N-INK
(2030 SOUTH TRYON STREET)
NORTHERN
PARCEL
SOUTHERN
PARCEL
SIGNS DESIGNED
(2119 SOUTH TRYON STREET)
HIBISCUS
(2125 SOUTH TRYON STREET)
MICHEAL GAVON SALON AND
TRANSFORMATIONS
INTERIORS
(2131 SOUTH TRYON STREET)
BILLBOARD
FORMER UST BASIN
FORMER SUNOCO
GAS STATION
FORMER PUMP
ISLAND
GRAVEL PARKING
AREA
UST BASIN
FORMER RAIL SPUR
LOCATION
PROPOSED PARKING
DECK
PROPOSED OFFICE
BLDG
PROPOSED OFFICE
BLDG
SB-4
TMW-1
SG-1
SG-4
SG-2
SG-3
SG-7
SB-2
SB-3
SB-5
SB-6
SB-7
TMW-2
TMW-3
TMW-4
SB-1
SG-5
SG-6
SG-8
SG-9
REVISION NO. 0
JOB NO. VBG-013
DATE: 2-6-19
FIGURE NO. 2
2100 S. TRYON STREET
CHARLOTTE, NORTH CAROLINA
SAMPLE LOCATION MAP
LEGEND
SITE PROPERTY BOUNDARY
PROPOSED STRUCTURE
POLE-MOUNTED TRANSFORMER
SOIL BORING LOCATION
SOIL GAS POINT LOCATION
TEMPORARY MONITORING WELL
LOCATION
2923 South Tryon Street-Suite 100Charlotte, North Carolina 28203704-586-0007(p) 704-586-0373(f)License # C-1269 / #C-245 Geology
S:\AAA-Master Projects\Vision Brokerage- VBG\VBG-013 2100 S. Tryon Street\Phase II ESA\Figures\Site Plan-Phase II.dwg, FIG 2, 2/6/2019 11:42:55 AM, erichardson

Appendix A

Boring Logs
NOTES: Hole precleared to 5.0' on 1/18/2019 by MidSouth using hand auger.
generated using GroundLogs.online
Client:
Project:
Address:
Vision Ventures
VBG-013
2100 S. Tryon Street, Charlotte, NC
WELL LOG
Well No.
Page:
SG-8
1 of 1
Drilling Start Date:
Drilling End Date:
Drilling Company:
Drilling Method:
Drilling Equipment:
Driller:
Logged By:
1/18/2019
1/18/2019
MidSouth
Direct Push
Geoprobe
Don Warren
AGH
Boring Depth (ft):
Boring Diameter (in):
Sampling Method(s):
DTW During Drilling (ft):
DTW After Drilling (ft):
Top of Casing Elev. (ft):
Location (X,Y):
15.0
2.25
Well Depth (ft):
Well Diameter (in):
Screen Slot (in):
Riser Material:
Screen Material:
Seal Material(s):
Filter Pack:DEPTH (ft)LITHOLOGYWATER LEVELWELLCOMPLETIONCOLLECT
Sample TypeTimeBlow CountsRecovery (ft)SOIL/ROCK VISUAL DESCRIPTION
MEASURE
PID (ppm)Lab SampleDEPTH (ft)0
5
10
15
20
(0') Lean CLAY (CL); some silt, medium plasticity, soft, moist, reddish-brown
(1') Lean CLAY (CL); few coarse gravel, some clay, medium plasticity, soft, moist,
reddish-brown
(2') Silty SAND (SM); little clay, well-graded, loose, dry, light reddish-brown
(3') Poorly graded SAND with silt (SP-SM); trace clay, loose, dry, light brown
(4') Well-graded SAND with gravel (SW); mostly fine-coarse grained sand, little
coarse gravel, loose, dry, light reddish-brown
(5') Sandy SILT (ML); low plasticity, soft, dry, gray and tan
(7') Lean CLAY (CL); some silt, medium plasticity, medium stiff, dry, reddish-brown
(8') SILT with sand (ML); soft, dry, light gray
(9') SILT (ML); some clay, soft, dry, light reddish brown and gray
(11') SILT (ML); some clay, soft, dry, reddish-brown
(12') SILT (ML); some clay, soft, dry, reddish brown and gray
(13.5') SILT with sand (ML); soft, dry, brown
(14') SILT (ML); soft, moist, brown, micaceous
(15') Boring terminated
0.9
1.1
0.7
1.7
0.8
1.6
3.2
3.8
2.5
4.1
4.5
0
5
10
15
20
NOTES: Hole precleared to 5.0' on 1/18/2019 by MidSouth using hand auger.
generated using GroundLogs.online
Client:
Project:
Address:
Vision Ventures
VBG-013
2100 S. Tryon Street, Charlotte, NC
WELL LOG
Well No.
Page:
SG-9
1 of 1
Drilling Start Date:
Drilling End Date:
Drilling Company:
Drilling Method:
Drilling Equipment:
Driller:
Logged By:
1/18/2019
1/18/2019
MidSouth
Direct Push
Geoprobe
Don Warren
AGH
Boring Depth (ft):
Boring Diameter (in):
Sampling Method(s):
DTW During Drilling (ft):
DTW After Drilling (ft):
Top of Casing Elev. (ft):
Location (X,Y):
12.0
2.25
Well Depth (ft):
Well Diameter (in):
Screen Slot (in):
Riser Material:
Screen Material:
Seal Material(s):
Filter Pack:DEPTH (ft)LITHOLOGYWATER LEVELWELLCOMPLETIONCOLLECT
Sample TypeTimeBlow CountsRecovery (ft)SOIL/ROCK VISUAL DESCRIPTION
MEASURE
PID (ppm)Lab SampleDEPTH (ft)0
5
10
15
20
(0') Silty SAND (SM); trace coarse gravel, little clay, loose, moist, dark brown
(1') SILT (ML); some clay, soft, moist, dark reddish-brown
(2') SILT (ML); little clay, medium stiff, dry, dark reddish-brown
(12') Boring terminated
0.9
0.6
1.0
0.9
1.2
2.7
4.2
2.8
2.2
0
5
10
15
20

Appendix B

Laboratory Analytical Report
#=CL#
January 29, 2019
LIMS USE: FR - MATT INGALLS
LIMS OBJECT ID: 92415033
92415033
Project:
Pace Project No.:
RE:
Matt Ingalls
Hart & Hickman
2923 S Tyron ST
Suite 100
Charlotte, NC 28203
VBG-013
Dear Matt Ingalls:
Enclosed are the analytical results for sample(s) received by the laboratory on January 23, 2019.
The results relate only to the samples included in this report. Results reported herein conform to the
most current, applicable TNI/NELAC standards and the laboratory's Quality Assurance Manual,
where applicable, unless otherwise noted in the body of the report.
If you have any questions concerning this report, please feel free to contact me.
Sincerely,
Kevin Godwin
[e-mail]
Project Manager
1(704)875-9092
Enclosures
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 1 of 19
#=CP#
CERTIFICATIONS
Pace Project No.:
Project:
92415033
VBG-013
Minnesota Certification IDs
1700 Elm Street SE, Minneapolis, MN 55414-2485
A2LA Certification #: 2926.01
Alabama Certification #: 40770
Alaska Contaminated Sites Certification #: 17-009
Alaska DW Certification #: MN00064
Arizona Certification #: AZ0014
Arkansas DW Certification #: MN00064
Arkansas WW Certification #: 88-0680
California Certification #: 2929
CNMI Saipan Certification #: MP0003
Colorado Certification #: MN00064
Connecticut Certification #: PH-0256
EPA Region 8+Wyoming DW Certification #: via MN 027-
053-137
Florida Certification #: E87605
Georgia Certification #: 959
Guam EPA Certification #: MN00064
Hawaii Certification #: MN00064
Idaho Certification #: MN00064
Illinois Certification #: 200011
Indiana Certification #: C-MN-01
Iowa Certification #: 368
Kansas Certification #: E-10167
Kentucky DW Certification #: 90062
Kentucky WW Certification #: 90062
Louisiana DEQ Certification #: 03086
Louisiana DW Certification #: MN00064
Maine Certification #: MN00064
Maryland Certification #: 322
Massachusetts Certification #: M-MN064
Michigan Certification #: 9909
Minnesota Certification #: 027-053-137
Minnesota Dept of Ag Certifcation #: via MN 027-053-137
Minnesota Petrofund Certification #: 1240
Mississippi Certification #: MN00064
Montana Certification #: CERT0092
Nebraska Certification #: NE-OS-18-06
Nevada Certification #: MN00064
New Hampshire Certification #: 2081
New Jersey Certification #: MN002
New York Certification #: 11647
North Carolina DW Certification #: 27700
North Carolina WW Certification #: 530
North Dakota Certification #: R-036
Ohio DW Certification #: 41244
Ohio VAP Certification #: CL101
Oklahoma Certification #: 9507
Oregon NwTPH Certification #: MN300001
Oregon Secondary Certification #: MN200001
Pennsylvania Certification #: 68-00563
Puerto Rico Certification #: MN00064
South Carolina Certification #:74003001
Tennessee Certification #: TN02818
Texas Certification #: T104704192
Utah Certification #: MN00064
Virginia Certification #: 460163
Washington Certification #: C486
West Virginia DW Certification #: 9952 C
West Virginia DEP Certification #: 382
Wisconsin Certification #: 999407970
Wyoming UST Certification #: via A2LA 2926.01
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 2 of 19
#=SS#
SAMPLE SUMMARY
Pace Project No.:
Project:
92415033
VBG-013
Lab ID Sample ID Matrix Date Collected Date Received
92415033001 SG-8 (Can#428)Air 01/22/19 15:30 01/23/19 11:17
92415033002 SG-9 (Can#719)Air 01/22/19 12:55 01/23/19 11:17
92415033003 DUP-1 (Can#1537)Air 01/22/19 14:54 01/23/19 11:17
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 3 of 19
#=SA#
SAMPLE ANALYTE COUNT
Pace Project No.:
Project:
92415033
VBG-013
Lab ID Sample ID Method
Analytes
Reported LaboratoryAnalysts
92415033001 SG-8 (Can#428)TO-15 58 PASI-MMJL
92415033002 SG-9 (Can#719)TO-15 58 PASI-MMJL
92415033003 DUP-1 (Can#1537)TO-15 58 PASI-MMJL
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 4 of 19
#=AR#
ANALYTICAL RESULTS
Pace Project No.:
Project:
92415033
VBG-013
Sample: SG-8 (Can#428)Lab ID: 92415033001 Collected: 01/22/19 15:30 Received: 01/23/19 11:17 Matrix: Air
Parameters Results Units DF Prepared Analyzed CAS No. QualMDLLimit
Report
Analytical Method: TO-15TO15 MSV AIR
Acetone 7.7 ug/m3 01/24/19 18:37 67-64-13.7 1.9 1.55
Benzene 1.7 ug/m3 01/24/19 18:37 71-43-20.50 0.24 1.55
Bromodichloromethane ND ug/m3 01/24/19 18:37 75-27-42.1 0.57 1.55
Bromoform ND ug/m3 01/24/19 18:37 75-25-28.1 2.2 1.55
Bromomethane ND ug/m3 01/24/19 18:37 74-83-91.2 0.35 1.55
1,3-Butadiene ND ug/m3 01/24/19 18:37 106-99-00.70 0.20 1.55
2-Butanone (MEK)ND ug/m3 01/24/19 18:37 78-93-34.6 0.57 1.55
Carbon disulfide 18.4 ug/m3 01/24/19 18:37 75-15-00.98 0.34 1.55
Carbon tetrachloride ND ug/m3 01/24/19 18:37 56-23-52.0 0.66 1.55
Chlorobenzene ND ug/m3 01/24/19 18:37 108-90-71.5 0.43 1.55
Chloroethane ND ug/m3 01/24/19 18:37 75-00-30.83 0.40 1.55
Chloroform ND ug/m3 01/24/19 18:37 67-66-30.77 0.30 1.55
Chloromethane ND ug/m3 01/24/19 18:37 74-87-30.65 0.24 1.55
Cyclohexane ND ug/m3 01/24/19 18:37 110-82-72.7 0.55 1.55
Dibromochloromethane ND ug/m3 01/24/19 18:37 124-48-12.7 1.1 1.55
1,2-Dibromoethane (EDB)ND ug/m3 01/24/19 18:37 106-93-41.2 0.57 1.55
1,2-Dichlorobenzene ND ug/m3 01/24/19 18:37 95-50-11.9 0.77 1.55
1,3-Dichlorobenzene ND ug/m3 01/24/19 18:37 541-73-11.9 0.90 1.55
1,4-Dichlorobenzene ND ug/m3 01/24/19 18:37 106-46-74.7 1.6 1.55
Dichlorodifluoromethane 1.6 ug/m3 01/24/19 18:37 75-71-81.6 0.45 1.55
1,1-Dichloroethane ND ug/m3 01/24/19 18:37 75-34-31.3 0.35 1.55
1,2-Dichloroethane ND ug/m3 01/24/19 18:37 107-06-20.64 0.23 1.55
1,1-Dichloroethene ND ug/m3 01/24/19 18:37 75-35-41.2 0.42 1.55
cis-1,2-Dichloroethene ND ug/m3 01/24/19 18:37 156-59-21.2 0.34 1.55
trans-1,2-Dichloroethene ND ug/m3 01/24/19 18:37 156-60-51.2 0.44 1.55
1,2-Dichloropropane ND ug/m3 01/24/19 18:37 78-87-51.5 0.36 1.55
cis-1,3-Dichloropropene ND ug/m3 01/24/19 18:37 10061-01-51.4 0.47 1.55
trans-1,3-Dichloropropene ND ug/m3 01/24/19 18:37 10061-02-61.4 0.68 1.55
Dichlorotetrafluoroethane ND ug/m3 01/24/19 18:37 76-14-22.2 0.68 1.55
Ethyl acetate ND ug/m3 01/24/19 18:37 141-78-61.1 0.29 1.55
Ethylbenzene 0.72J ug/m3 01/24/19 18:37 100-41-41.4 0.47 1.55
4-Ethyltoluene ND ug/m3 01/24/19 18:37 622-96-83.9 0.88 1.55
n-Heptane 1.2J ug/m3 01/24/19 18:37 142-82-51.3 0.59 1.55
Hexachloro-1,3-butadiene ND ug/m3 01/24/19 18:37 87-68-38.4 3.1 1.55
n-Hexane 2.2 ug/m3 01/24/19 18:37 110-54-31.1 0.48 1.55
2-Hexanone ND ug/m3 01/24/19 18:37 591-78-66.4 1.2 1.55
Methylene Chloride 1.9J ug/m3 01/24/19 18:37 75-09-25.5 1.5 1.55
4-Methyl-2-pentanone (MIBK)ND ug/m3 01/24/19 18:37 108-10-16.4 0.80 1.55
Methyl-tert-butyl ether ND ug/m3 01/24/19 18:37 1634-04-45.7 1.0 1.55
Naphthalene ND ug/m3 01/24/19 18:37 91-20-34.1 2.0 1.55
Propylene 50.2 ug/m3 01/24/19 18:37 115-07-10.54 0.22 1.55
Styrene ND ug/m3 01/24/19 18:37 100-42-51.3 0.53 1.55
1,1,2,2-Tetrachloroethane ND ug/m3 01/24/19 18:37 79-34-51.1 0.45 1.55
Tetrachloroethene 3.6 ug/m3 01/24/19 18:37 127-18-41.1 0.49 1.55
Tetrahydrofuran ND ug/m3 01/24/19 18:37 109-99-90.93 0.40 1.55
Toluene 6.1 ug/m3 01/24/19 18:37 108-88-31.2 0.54 1.55
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 01/29/2019 12:09 PM
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 5 of 19
#=AR#
ANALYTICAL RESULTS
Pace Project No.:
Project:
92415033
VBG-013
Sample: SG-8 (Can#428)Lab ID: 92415033001 Collected: 01/22/19 15:30 Received: 01/23/19 11:17 Matrix: Air
Parameters Results Units DF Prepared Analyzed CAS No. QualMDLLimit
Report
Analytical Method: TO-15TO15 MSV AIR
1,2,4-Trichlorobenzene ND ug/m3 01/24/19 18:37 120-82-111.7 5.8 1.55
1,1,1-Trichloroethane ND ug/m3 01/24/19 18:37 71-55-61.7 0.48 1.55
1,1,2-Trichloroethane ND ug/m3 01/24/19 18:37 79-00-50.86 0.39 1.55
Trichloroethene ND ug/m3 01/24/19 18:37 79-01-60.85 0.40 1.55
Trichlorofluoromethane 1.0J ug/m3 01/24/19 18:37 75-69-41.8 0.57 1.55
1,1,2-Trichlorotrifluoroethane ND ug/m3 01/24/19 18:37 76-13-12.4 0.87 1.55
1,2,4-Trimethylbenzene ND ug/m3 01/24/19 18:37 95-63-61.5 0.70 1.55
1,3,5-Trimethylbenzene ND ug/m3 01/24/19 18:37 108-67-81.5 0.62 1.55
Vinyl acetate ND ug/m3 01/24/19 18:37 108-05-41.1 0.42 1.55
Vinyl chloride ND ug/m3 01/24/19 18:37 75-01-40.40 0.20 1.55
m&p-Xylene 2.4J ug/m3 01/24/19 18:37 179601-23-12.7 1.1 1.55
o-Xylene 1.6 ug/m3 01/24/19 18:37 95-47-61.4 0.53 1.55
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 01/29/2019 12:09 PM
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 6 of 19
#=AR#
ANALYTICAL RESULTS
Pace Project No.:
Project:
92415033
VBG-013
Sample: SG-9 (Can#719)Lab ID: 92415033002 Collected: 01/22/19 12:55 Received: 01/23/19 11:17 Matrix: Air
Parameters Results Units DF Prepared Analyzed CAS No. QualMDLLimit
Report
Analytical Method: TO-15TO15 MSV AIR
Acetone ND ug/m3 01/24/19 19:29 67-64-13.6 1.8 1.49
Benzene ND ug/m3 01/24/19 19:29 71-43-20.48 0.23 1.49
Bromodichloromethane ND ug/m3 01/24/19 19:29 75-27-42.0 0.55 1.49
Bromoform ND ug/m3 01/24/19 19:29 75-25-27.8 2.1 1.49
Bromomethane ND ug/m3 01/24/19 19:29 74-83-91.2 0.34 1.49
1,3-Butadiene ND ug/m3 01/24/19 19:29 106-99-00.67 0.19 1.49
2-Butanone (MEK)ND ug/m3 01/24/19 19:29 78-93-34.5 0.55 1.49
Carbon disulfide 6.4 ug/m3 01/24/19 19:29 75-15-00.94 0.33 1.49
Carbon tetrachloride ND ug/m3 01/24/19 19:29 56-23-51.9 0.64 1.49
Chlorobenzene ND ug/m3 01/24/19 19:29 108-90-71.4 0.41 1.49
Chloroethane ND ug/m3 01/24/19 19:29 75-00-30.80 0.39 1.49
Chloroform ND ug/m3 01/24/19 19:29 67-66-30.74 0.29 1.49
Chloromethane ND ug/m3 01/24/19 19:29 74-87-30.63 0.23 1.49
Cyclohexane ND ug/m3 01/24/19 19:29 110-82-72.6 0.53 1.49
Dibromochloromethane ND ug/m3 01/24/19 19:29 124-48-12.6 1.1 1.49
1,2-Dibromoethane (EDB)ND ug/m3 01/24/19 19:29 106-93-41.2 0.55 1.49
1,2-Dichlorobenzene ND ug/m3 01/24/19 19:29 95-50-11.8 0.74 1.49
1,3-Dichlorobenzene ND ug/m3 01/24/19 19:29 541-73-11.8 0.87 1.49
1,4-Dichlorobenzene ND ug/m3 01/24/19 19:29 106-46-74.6 1.5 1.49
Dichlorodifluoromethane 1.3J ug/m3 01/24/19 19:29 75-71-81.5 0.44 1.49
1,1-Dichloroethane ND ug/m3 01/24/19 19:29 75-34-31.2 0.34 1.49
1,2-Dichloroethane ND ug/m3 01/24/19 19:29 107-06-20.61 0.22 1.49
1,1-Dichloroethene ND ug/m3 01/24/19 19:29 75-35-41.2 0.41 1.49
cis-1,2-Dichloroethene ND ug/m3 01/24/19 19:29 156-59-21.2 0.33 1.49
trans-1,2-Dichloroethene ND ug/m3 01/24/19 19:29 156-60-51.2 0.42 1.49
1,2-Dichloropropane ND ug/m3 01/24/19 19:29 78-87-51.4 0.34 1.49
cis-1,3-Dichloropropene ND ug/m3 01/24/19 19:29 10061-01-51.4 0.45 1.49
trans-1,3-Dichloropropene ND ug/m3 01/24/19 19:29 10061-02-61.4 0.66 1.49
Dichlorotetrafluoroethane ND ug/m3 01/24/19 19:29 76-14-22.1 0.65 1.49
Ethyl acetate ND ug/m3 01/24/19 19:29 141-78-61.1 0.28 1.49
Ethylbenzene ND ug/m3 01/24/19 19:29 100-41-41.3 0.45 1.49
4-Ethyltoluene ND ug/m3 01/24/19 19:29 622-96-83.7 0.85 1.49
n-Heptane ND ug/m3 01/24/19 19:29 142-82-51.2 0.57 1.49
Hexachloro-1,3-butadiene ND ug/m3 01/24/19 19:29 87-68-38.1 2.9 1.49
n-Hexane ND ug/m3 01/24/19 19:29 110-54-31.1 0.46 1.49
2-Hexanone ND ug/m3 01/24/19 19:29 591-78-66.2 1.1 1.49
Methylene Chloride 1.9J ug/m3 01/24/19 19:29 75-09-25.3 1.4 1.49
4-Methyl-2-pentanone (MIBK)ND ug/m3 01/24/19 19:29 108-10-16.2 0.77 1.49
Methyl-tert-butyl ether ND ug/m3 01/24/19 19:29 1634-04-45.5 0.99 1.49
Naphthalene ND ug/m3 01/24/19 19:29 91-20-34.0 2.0 1.49
Propylene 5.3 ug/m3 01/24/19 19:29 115-07-10.52 0.21 1.49
Styrene ND ug/m3 01/24/19 19:29 100-42-51.3 0.51 1.49
1,1,2,2-Tetrachloroethane ND ug/m3 01/24/19 19:29 79-34-51.0 0.44 1.49
Tetrachloroethene 6.4 ug/m3 01/24/19 19:29 127-18-41.0 0.47 1.49
Tetrahydrofuran ND ug/m3 01/24/19 19:29 109-99-90.89 0.39 1.49
Toluene ND ug/m3 01/24/19 19:29 108-88-31.1 0.52 1.49
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 01/29/2019 12:09 PM
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 7 of 19
#=AR#
ANALYTICAL RESULTS
Pace Project No.:
Project:
92415033
VBG-013
Sample: SG-9 (Can#719)Lab ID: 92415033002 Collected: 01/22/19 12:55 Received: 01/23/19 11:17 Matrix: Air
Parameters Results Units DF Prepared Analyzed CAS No. QualMDLLimit
Report
Analytical Method: TO-15TO15 MSV AIR
1,2,4-Trichlorobenzene ND ug/m3 01/24/19 19:29 120-82-111.2 5.5 1.49
1,1,1-Trichloroethane ND ug/m3 01/24/19 19:29 71-55-61.7 0.46 1.49
1,1,2-Trichloroethane ND ug/m3 01/24/19 19:29 79-00-50.83 0.37 1.49
Trichloroethene ND ug/m3 01/24/19 19:29 79-01-60.81 0.38 1.49
Trichlorofluoromethane 1.5J ug/m3 01/24/19 19:29 75-69-41.7 0.55 1.49
1,1,2-Trichlorotrifluoroethane ND ug/m3 01/24/19 19:29 76-13-12.3 0.84 1.49
1,2,4-Trimethylbenzene ND ug/m3 01/24/19 19:29 95-63-61.5 0.67 1.49
1,3,5-Trimethylbenzene ND ug/m3 01/24/19 19:29 108-67-81.5 0.59 1.49
Vinyl acetate ND ug/m3 01/24/19 19:29 108-05-41.1 0.40 1.49
Vinyl chloride ND ug/m3 01/24/19 19:29 75-01-40.39 0.19 1.49
m&p-Xylene ND ug/m3 01/24/19 19:29 179601-23-12.6 1.0 1.49
o-Xylene ND ug/m3 01/24/19 19:29 95-47-61.3 0.51 1.49
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 01/29/2019 12:09 PM
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 8 of 19
#=AR#
ANALYTICAL RESULTS
Pace Project No.:
Project:
92415033
VBG-013
Sample: DUP-1 (Can#1537)Lab ID: 92415033003 Collected: 01/22/19 14:54 Received: 01/23/19 11:17 Matrix: Air
Parameters Results Units DF Prepared Analyzed CAS No. QualMDLLimit
Report
Analytical Method: TO-15TO15 MSV AIR
Acetone 34.9 ug/m3 01/24/19 20:22 67-64-13.6 1.8 1.49
Benzene 2.1 ug/m3 01/24/19 20:22 71-43-20.48 0.23 1.49
Bromodichloromethane ND ug/m3 01/24/19 20:22 75-27-42.0 0.55 1.49
Bromoform ND ug/m3 01/24/19 20:22 75-25-27.8 2.1 1.49
Bromomethane ND ug/m3 01/24/19 20:22 74-83-91.2 0.34 1.49
1,3-Butadiene ND ug/m3 01/24/19 20:22 106-99-00.67 0.19 1.49
2-Butanone (MEK)10.9 ug/m3 01/24/19 20:22 78-93-34.5 0.55 1.49
Carbon disulfide 20.1 ug/m3 01/24/19 20:22 75-15-00.94 0.33 1.49
Carbon tetrachloride ND ug/m3 01/24/19 20:22 56-23-51.9 0.64 1.49
Chlorobenzene 4.4 ug/m3 01/24/19 20:22 108-90-71.4 0.41 1.49
Chloroethane ND ug/m3 01/24/19 20:22 75-00-30.80 0.39 1.49
Chloroform ND ug/m3 01/24/19 20:22 67-66-30.74 0.29 1.49
Chloromethane ND ug/m3 01/24/19 20:22 74-87-30.63 0.23 1.49
Cyclohexane 0.70J ug/m3 01/24/19 20:22 110-82-72.6 0.53 1.49
Dibromochloromethane ND ug/m3 01/24/19 20:22 124-48-12.6 1.1 1.49
1,2-Dibromoethane (EDB)ND ug/m3 01/24/19 20:22 106-93-41.2 0.55 1.49
1,2-Dichlorobenzene 8.6 ug/m3 01/24/19 20:22 95-50-11.8 0.74 1.49
1,3-Dichlorobenzene ND ug/m3 01/24/19 20:22 541-73-11.8 0.87 1.49
1,4-Dichlorobenzene 18.7 ug/m3 01/24/19 20:22 106-46-74.6 1.5 1.49
Dichlorodifluoromethane 1.5 ug/m3 01/24/19 20:22 75-71-81.5 0.44 1.49
1,1-Dichloroethane ND ug/m3 01/24/19 20:22 75-34-31.2 0.34 1.49
1,2-Dichloroethane ND ug/m3 01/24/19 20:22 107-06-20.61 0.22 1.49
1,1-Dichloroethene ND ug/m3 01/24/19 20:22 75-35-41.2 0.41 1.49
cis-1,2-Dichloroethene ND ug/m3 01/24/19 20:22 156-59-21.2 0.33 1.49
trans-1,2-Dichloroethene ND ug/m3 01/24/19 20:22 156-60-51.2 0.42 1.49
1,2-Dichloropropane ND ug/m3 01/24/19 20:22 78-87-51.4 0.34 1.49
cis-1,3-Dichloropropene ND ug/m3 01/24/19 20:22 10061-01-51.4 0.45 1.49
trans-1,3-Dichloropropene ND ug/m3 01/24/19 20:22 10061-02-61.4 0.66 1.49
Dichlorotetrafluoroethane ND ug/m3 01/24/19 20:22 76-14-22.1 0.65 1.49
Ethyl acetate 1.4 ug/m3 01/24/19 20:22 141-78-61.1 0.28 1.49
Ethylbenzene 1.2J ug/m3 01/24/19 20:22 100-41-41.3 0.45 1.49
4-Ethyltoluene ND ug/m3 01/24/19 20:22 622-96-83.7 0.85 1.49
n-Heptane ND ug/m3 01/24/19 20:22 142-82-51.2 0.57 1.49
Hexachloro-1,3-butadiene ND ug/m3 01/24/19 20:22 87-68-38.1 2.9 1.49
n-Hexane 4.4 ug/m3 01/24/19 20:22 110-54-31.1 0.46 1.49
2-Hexanone ND ug/m3 01/24/19 20:22 591-78-66.2 1.1 1.49
Methylene Chloride 17.1 ug/m3 01/24/19 20:22 75-09-25.3 1.4 1.49
4-Methyl-2-pentanone (MIBK)ND ug/m3 01/24/19 20:22 108-10-16.2 0.77 1.49
Methyl-tert-butyl ether ND ug/m3 01/24/19 20:22 1634-04-45.5 0.99 1.49
Naphthalene 36.4 ug/m3 01/24/19 20:22 91-20-34.0 2.0 1.49
Propylene 54.8 ug/m3 01/24/19 20:22 115-07-10.52 0.21 1.49
Styrene 0.76J ug/m3 01/24/19 20:22 100-42-51.3 0.51 1.49
1,1,2,2-Tetrachloroethane ND ug/m3 01/24/19 20:22 79-34-51.0 0.44 1.49
Tetrachloroethene 6.5 ug/m3 01/24/19 20:22 127-18-41.0 0.47 1.49
Tetrahydrofuran ND ug/m3 01/24/19 20:22 109-99-90.89 0.39 1.49
Toluene 12.2 ug/m3 01/24/19 20:22 108-88-31.1 0.52 1.49
REPORT OF LABORATORY ANALYSIS
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Page 9 of 19
#=AR#
ANALYTICAL RESULTS
Pace Project No.:
Project:
92415033
VBG-013
Sample: DUP-1 (Can#1537)Lab ID: 92415033003 Collected: 01/22/19 14:54 Received: 01/23/19 11:17 Matrix: Air
Parameters Results Units DF Prepared Analyzed CAS No. QualMDLLimit
Report
Analytical Method: TO-15TO15 MSV AIR
1,2,4-Trichlorobenzene ND ug/m3 01/24/19 20:22 120-82-111.2 5.5 1.49
1,1,1-Trichloroethane ND ug/m3 01/24/19 20:22 71-55-61.7 0.46 1.49
1,1,2-Trichloroethane ND ug/m3 01/24/19 20:22 79-00-50.83 0.37 1.49
Trichloroethene ND ug/m3 01/24/19 20:22 79-01-60.81 0.38 1.49
Trichlorofluoromethane 1.2J ug/m3 01/24/19 20:22 75-69-41.7 0.55 1.49
1,1,2-Trichlorotrifluoroethane ND ug/m3 01/24/19 20:22 76-13-12.3 0.84 1.49
1,2,4-Trimethylbenzene 3.5 ug/m3 01/24/19 20:22 95-63-61.5 0.67 1.49
1,3,5-Trimethylbenzene 1.4J ug/m3 01/24/19 20:22 108-67-81.5 0.59 1.49
Vinyl acetate ND ug/m3 01/24/19 20:22 108-05-41.1 0.40 1.49
Vinyl chloride ND ug/m3 01/24/19 20:22 75-01-40.39 0.19 1.49
m&p-Xylene 6.3 ug/m3 01/24/19 20:22 179601-23-12.6 1.0 1.49
o-Xylene 3.2 ug/m3 01/24/19 20:22 95-47-61.3 0.51 1.49
REPORT OF LABORATORY ANALYSIS
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#=QC#
QUALITY CONTROL DATA
Pace Project No.:
Project:
92415033
VBG-013
Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result.
QC Batch:
QC Batch Method:
Analysis Method:
Analysis Description:
587218
TO-15
TO-15
TO15 MSV AIR Low Level
Associated Lab Samples: 92415033001, 92415033002, 92415033003
Parameter Units
Blank
Result
Reporting
Limit Qualifiers
METHOD BLANK: 3178313
Associated Lab Samples:92415033001, 92415033002, 92415033003
Matrix: Air
AnalyzedMDL
1,1,1-Trichloroethane ug/m3 ND 0.56 01/24/19 11:060.15
1,1,2,2-Tetrachloroethane ug/m3 ND 0.35 01/24/19 11:060.15
1,1,2-Trichloroethane ug/m3 ND 0.28 01/24/19 11:060.12
1,1,2-Trichlorotrifluoroethane ug/m3 ND 0.78 01/24/19 11:060.28
1,1-Dichloroethane ug/m3 ND 0.41 01/24/19 11:060.11
1,1-Dichloroethene ug/m3 ND 0.40 01/24/19 11:060.14
1,2,4-Trichlorobenzene ug/m3 ND 3.8 01/24/19 11:061.9
1,2,4-Trimethylbenzene ug/m3 ND 0.50 01/24/19 11:060.23
1,2-Dibromoethane (EDB)ug/m3 ND 0.39 01/24/19 11:060.18
1,2-Dichlorobenzene ug/m3 ND 0.61 01/24/19 11:060.25
1,2-Dichloroethane ug/m3 ND 0.21 01/24/19 11:060.075
1,2-Dichloropropane ug/m3 ND 0.47 01/24/19 11:060.12
1,3,5-Trimethylbenzene ug/m3 ND 0.50 01/24/19 11:060.20
1,3-Butadiene ug/m3 ND 0.22 01/24/19 11:060.064
1,3-Dichlorobenzene ug/m3 ND 0.61 01/24/19 11:060.29
1,4-Dichlorobenzene ug/m3 ND 1.5 01/24/19 11:060.50
2-Butanone (MEK)ug/m3 ND 1.5 01/24/19 11:060.18
2-Hexanone ug/m3 ND 2.1 01/24/19 11:060.37
4-Ethyltoluene ug/m3 ND 1.2 01/24/19 11:060.28
4-Methyl-2-pentanone (MIBK)ug/m3 ND 2.1 01/24/19 11:060.26
Acetone ug/m3 1.0J 1.2 01/24/19 11:060.60
Benzene ug/m3 ND 0.16 01/24/19 11:060.076
Bromodichloromethane ug/m3 ND 0.68 01/24/19 11:060.18
Bromoform ug/m3 ND 2.6 01/24/19 11:060.71
Bromomethane ug/m3 ND 0.39 01/24/19 11:060.11
Carbon disulfide ug/m3 ND 0.32 01/24/19 11:060.11
Carbon tetrachloride ug/m3 ND 0.64 01/24/19 11:060.21
Chlorobenzene ug/m3 ND 0.47 01/24/19 11:060.14
Chloroethane ug/m3 ND 0.27 01/24/19 11:060.13
Chloroform ug/m3 ND 0.25 01/24/19 11:060.098
Chloromethane ug/m3 ND 0.21 01/24/19 11:060.078
cis-1,2-Dichloroethene ug/m3 ND 0.40 01/24/19 11:060.11
cis-1,3-Dichloropropene ug/m3 ND 0.46 01/24/19 11:060.15
Cyclohexane ug/m3 ND 0.88 01/24/19 11:060.18
Dibromochloromethane ug/m3 ND 0.86 01/24/19 11:060.36
Dichlorodifluoromethane ug/m3 ND 0.50 01/24/19 11:060.15
Dichlorotetrafluoroethane ug/m3 ND 0.71 01/24/19 11:060.22
Ethyl acetate ug/m3 ND 0.37 01/24/19 11:060.095
Ethylbenzene ug/m3 ND 0.44 01/24/19 11:060.15
Hexachloro-1,3-butadiene ug/m3 ND 2.7 01/24/19 11:060.98
m&p-Xylene ug/m3 ND 0.88 01/24/19 11:060.35
REPORT OF LABORATORY ANALYSIS
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without the written consent of Pace Analytical Services, LLC.Date: 01/29/2019 12:09 PM
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Page 11 of 19
#=QC#
QUALITY CONTROL DATA
Pace Project No.:
Project:
92415033
VBG-013
Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result.
Parameter Units
Blank
Result
Reporting
Limit Qualifiers
METHOD BLANK: 3178313
Associated Lab Samples:92415033001, 92415033002, 92415033003
Matrix: Air
AnalyzedMDL
Methyl-tert-butyl ether ug/m3 ND 1.8 01/24/19 11:060.33
Methylene Chloride ug/m3 0.67J 1.8 01/24/19 11:060.47
n-Heptane ug/m3 ND 0.42 01/24/19 11:060.19
n-Hexane ug/m3 ND 0.36 01/24/19 11:060.16
Naphthalene ug/m3 ND 1.3 01/24/19 11:060.66
o-Xylene ug/m3 ND 0.44 01/24/19 11:060.17
Propylene ug/m3 ND 0.18 01/24/19 11:060.072
Styrene ug/m3 ND 0.43 01/24/19 11:060.17
Tetrachloroethene ug/m3 ND 0.34 01/24/19 11:060.16
Tetrahydrofuran ug/m3 ND 0.30 01/24/19 11:060.13
Toluene ug/m3 ND 0.38 01/24/19 11:060.18
trans-1,2-Dichloroethene ug/m3 ND 0.40 01/24/19 11:060.14
trans-1,3-Dichloropropene ug/m3 ND 0.46 01/24/19 11:060.22
Trichloroethene ug/m3 ND 0.27 01/24/19 11:060.13
Trichlorofluoromethane ug/m3 ND 0.57 01/24/19 11:060.18
Vinyl acetate ug/m3 ND 0.36 01/24/19 11:060.14
Vinyl chloride ug/m3 ND 0.13 01/24/19 11:060.063
Parameter Units
LCS
Result
% Rec
Limits Qualifiers% RecConc.
3178314LABORATORY CONTROL SAMPLE:
LCSSpike
1,1,1-Trichloroethane ug/m3 57.955.5 104 70-130
1,1,2,2-Tetrachloroethane ug/m3 70.869.8 101 70-132
1,1,2-Trichloroethane ug/m3 56.855.5 102 70-130
1,1,2-Trichlorotrifluoroethane ug/m3 80.077.9 103 70-130
1,1-Dichloroethane ug/m3 39.141.1 95 70-130
1,1-Dichloroethene ug/m3 40.140.3 99 70-130
1,2,4-Trichlorobenzene ug/m3 87.775.4 116 56-130
1,2,4-Trimethylbenzene ug/m3 54.550 109 70-134
1,2-Dibromoethane (EDB)ug/m3 80.978.1 104 70-130
1,2-Dichlorobenzene ug/m3 65.661.1 107 70-132
1,2-Dichloroethane ug/m3 39.741.1 96 70-130
1,2-Dichloropropane ug/m3 43.347 92 70-130
1,3,5-Trimethylbenzene ug/m3 53.950 108 70-132
1,3-Butadiene ug/m3 24.222.5 108 65-130
1,3-Dichlorobenzene ug/m3 65.861.1 108 70-137
1,4-Dichlorobenzene ug/m3 65.961.1 108 70-134
2-Butanone (MEK)ug/m3 29.230 97 70-130
2-Hexanone ug/m3 40.141.6 96 70-135
4-Ethyltoluene ug/m3 55.050 110 70-138
4-Methyl-2-pentanone (MIBK)ug/m3 37.841.6 91 70-131
Acetone ug/m3 112121 93 67-130
Benzene ug/m3 31.632.5 97 70-130
Bromodichloromethane ug/m3 70.768.1 104 70-130
REPORT OF LABORATORY ANALYSIS
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without the written consent of Pace Analytical Services, LLC.Date: 01/29/2019 12:09 PM
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Page 12 of 19
#=QC#
QUALITY CONTROL DATA
Pace Project No.:
Project:
92415033
VBG-013
Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result.
Parameter Units
LCS
Result
% Rec
Limits Qualifiers% RecConc.
3178314LABORATORY CONTROL SAMPLE:
LCSSpike
Bromoform ug/m3 96.1 SS10591 70-132
Bromomethane ug/m3 41.439.5 105 69-130
Carbon disulfide ug/m3 32.431.6 103 56-137
Carbon tetrachloride ug/m3 73.064 114 66-131
Chlorobenzene ug/m3 47.546.8 101 70-130
Chloroethane ug/m3 29.426.8 110 70-130
Chloroform ug/m3 48.549.6 98 70-130
Chloromethane ug/m3 21.521 103 66-130
cis-1,2-Dichloroethene ug/m3 40.340.3 100 70-130
cis-1,3-Dichloropropene ug/m3 49.046.1 106 70-133
Cyclohexane ug/m3 32.335 92 68-132
Dibromochloromethane ug/m3 97.486.6 113 70-130
Dichlorodifluoromethane ug/m3 50.450.3 100 70-130
Dichlorotetrafluoroethane ug/m3 76.571 108 70-130
Ethyl acetate ug/m3 32.836.6 90 69-130
Ethylbenzene ug/m3 45.644.1 103 67-131
Hexachloro-1,3-butadiene ug/m3 135108 125 66-137
m&p-Xylene ug/m3 91.188.3 103 70-132
Methyl-tert-butyl ether ug/m3 37.336.6 102 70-130
Methylene Chloride ug/m3 135177 76 65-130
n-Heptane ug/m3 36.141.6 87 65-130
n-Hexane ug/m3 31.335.8 87 66-130
Naphthalene ug/m3 60.553.3 114 56-130
o-Xylene ug/m3 45.044.1 102 70-130
Propylene ug/m3 14.817.5 85 67-130
Styrene ug/m3 48.643.3 112 69-136
Tetrachloroethene ug/m3 73.868.9 107 70-130
Tetrahydrofuran ug/m3 27.230 91 68-131
Toluene ug/m3 39.238.3 102 70-130
trans-1,2-Dichloroethene ug/m3 40.740.3 101 70-130
trans-1,3-Dichloropropene ug/m3 52.946.1 115 70-134
Trichloroethene ug/m3 56.554.6 103 70-130
Trichlorofluoromethane ug/m3 53.557.1 94 65-130
Vinyl acetate ug/m3 33.335.8 93 61-133
Vinyl chloride ug/m3 27.826 107 70-130
Parameter Units
Dup
Result
Max
RPD QualifiersRPDResult
92415033001
3180040SAMPLE DUPLICATE:
1,1,1-Trichloroethane ug/m3 ND 25ND
1,1,2,2-Tetrachloroethane ug/m3 ND 25ND
1,1,2-Trichloroethane ug/m3 ND 25ND
1,1,2-Trichlorotrifluoroethane ug/m3 ND 25ND
1,1-Dichloroethane ug/m3 ND 25ND
1,1-Dichloroethene ug/m3 ND 25ND
REPORT OF LABORATORY ANALYSIS
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without the written consent of Pace Analytical Services, LLC.Date: 01/29/2019 12:09 PM
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Page 13 of 19
#=QC#
QUALITY CONTROL DATA
Pace Project No.:
Project:
92415033
VBG-013
Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result.
Parameter Units
Dup
Result
Max
RPD QualifiersRPDResult
92415033001
3180040SAMPLE DUPLICATE:
1,2,4-Trichlorobenzene ug/m3 ND 25ND
1,2,4-Trimethylbenzene ug/m3 ND 25ND
1,2-Dibromoethane (EDB)ug/m3 ND 25ND
1,2-Dichlorobenzene ug/m3 ND 25ND
1,2-Dichloroethane ug/m3 ND 25ND
1,2-Dichloropropane ug/m3 ND 25ND
1,3,5-Trimethylbenzene ug/m3 ND 25ND
1,3-Butadiene ug/m3 ND 25ND
1,3-Dichlorobenzene ug/m3 ND 25ND
1,4-Dichlorobenzene ug/m3 ND 25ND
2-Butanone (MEK)ug/m3 ND 25ND
2-Hexanone ug/m3 ND 25ND
4-Ethyltoluene ug/m3 ND 25ND
4-Methyl-2-pentanone (MIBK)ug/m3 ND 25ND
Acetone ug/m3 7.5 2 257.7
Benzene ug/m3 1.6 5 251.7
Bromodichloromethane ug/m3 ND 25ND
Bromoform ug/m3 ND 25ND
Bromomethane ug/m3 ND 25ND
Carbon disulfide ug/m3 18.2 1 2518.4
Carbon tetrachloride ug/m3 ND 25ND
Chlorobenzene ug/m3 ND 25ND
Chloroethane ug/m3 ND 25ND
Chloroform ug/m3 ND 25ND
Chloromethane ug/m3 ND 25ND
cis-1,2-Dichloroethene ug/m3 ND 25ND
cis-1,3-Dichloropropene ug/m3 ND 25ND
Cyclohexane ug/m3 ND 25ND
Dibromochloromethane ug/m3 ND 25ND
Dichlorodifluoromethane ug/m3 1.5J 251.6
Dichlorotetrafluoroethane ug/m3 ND 25ND
Ethyl acetate ug/m3 ND 25ND
Ethylbenzene ug/m3 0.74J 250.72J
Hexachloro-1,3-butadiene ug/m3 ND 25ND
m&p-Xylene ug/m3 2.4J 252.4J
Methyl-tert-butyl ether ug/m3 ND 25ND
Methylene Chloride ug/m3 1.9J 251.9J
n-Heptane ug/m3 1.3 251.2J
n-Hexane ug/m3 2.2 3 252.2
Naphthalene ug/m3 ND 25ND
o-Xylene ug/m3 1.6 3 251.6
Propylene ug/m3 50.1 0 2550.2
Styrene ug/m3 ND 25ND
Tetrachloroethene ug/m3 3.5 2 253.6
Tetrahydrofuran ug/m3 ND 25ND
Toluene ug/m3 6.1 0 256.1
trans-1,2-Dichloroethene ug/m3 ND 25ND
REPORT OF LABORATORY ANALYSIS
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without the written consent of Pace Analytical Services, LLC.Date: 01/29/2019 12:09 PM
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Page 14 of 19
#=QC#
QUALITY CONTROL DATA
Pace Project No.:
Project:
92415033
VBG-013
Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result.
Parameter Units
Dup
Result
Max
RPD QualifiersRPDResult
92415033001
3180040SAMPLE DUPLICATE:
trans-1,3-Dichloropropene ug/m3 ND 25ND
Trichloroethene ug/m3 ND 25ND
Trichlorofluoromethane ug/m3 0.99J 251.0J
Vinyl acetate ug/m3 ND 25ND
Vinyl chloride ug/m3 ND 25ND
Parameter Units
Dup
Result
Max
RPD QualifiersRPDResult
92415033002
3180041SAMPLE DUPLICATE:
1,1,1-Trichloroethane ug/m3 ND 25ND
1,1,2,2-Tetrachloroethane ug/m3 ND 25ND
1,1,2-Trichloroethane ug/m3 ND 25ND
1,1,2-Trichlorotrifluoroethane ug/m3 ND 25ND
1,1-Dichloroethane ug/m3 ND 25ND
1,1-Dichloroethene ug/m3 ND 25ND
1,2,4-Trichlorobenzene ug/m3 ND 25ND
1,2,4-Trimethylbenzene ug/m3 ND 25ND
1,2-Dibromoethane (EDB)ug/m3 ND 25ND
1,2-Dichlorobenzene ug/m3 ND 25ND
1,2-Dichloroethane ug/m3 ND 25ND
1,2-Dichloropropane ug/m3 ND 25ND
1,3,5-Trimethylbenzene ug/m3 ND 25ND
1,3-Butadiene ug/m3 ND 25ND
1,3-Dichlorobenzene ug/m3 ND 25ND
1,4-Dichlorobenzene ug/m3 ND 25ND
2-Butanone (MEK)ug/m3 ND 25ND
2-Hexanone ug/m3 ND 25ND
4-Ethyltoluene ug/m3 ND 25ND
4-Methyl-2-pentanone (MIBK)ug/m3 ND 25ND
Acetone ug/m3 ND 25ND
Benzene ug/m3 ND 25ND
Bromodichloromethane ug/m3 ND 25ND
Bromoform ug/m3 ND 25ND
Bromomethane ug/m3 ND 25ND
Carbon disulfide ug/m3 6.3 2 256.4
Carbon tetrachloride ug/m3 ND 25ND
Chlorobenzene ug/m3 ND 25ND
Chloroethane ug/m3 ND 25ND
Chloroform ug/m3 ND 25ND
Chloromethane ug/m3 ND 25ND
cis-1,2-Dichloroethene ug/m3 ND 25ND
cis-1,3-Dichloropropene ug/m3 ND 25ND
Cyclohexane ug/m3 ND 25ND
Dibromochloromethane ug/m3 ND 25ND
Dichlorodifluoromethane ug/m3 1.2J 251.3J
REPORT OF LABORATORY ANALYSIS
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without the written consent of Pace Analytical Services, LLC.Date: 01/29/2019 12:09 PM
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Page 15 of 19
#=QC#
QUALITY CONTROL DATA
Pace Project No.:
Project:
92415033
VBG-013
Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result.
Parameter Units
Dup
Result
Max
RPD QualifiersRPDResult
92415033002
3180041SAMPLE DUPLICATE:
Dichlorotetrafluoroethane ug/m3 ND 25ND
Ethyl acetate ug/m3 ND 25ND
Ethylbenzene ug/m3 ND 25ND
Hexachloro-1,3-butadiene ug/m3 ND 25ND
m&p-Xylene ug/m3 ND 25ND
Methyl-tert-butyl ether ug/m3 ND 25ND
Methylene Chloride ug/m3 1.9J 251.9J
n-Heptane ug/m3 ND 25ND
n-Hexane ug/m3 ND 25ND
Naphthalene ug/m3 ND 25ND
o-Xylene ug/m3 ND 25ND
Propylene ug/m3 5.1 3 255.3
Styrene ug/m3 ND 25ND
Tetrachloroethene ug/m3 6.2 4 256.4
Tetrahydrofuran ug/m3 ND 25ND
Toluene ug/m3 ND 25ND
trans-1,2-Dichloroethene ug/m3 ND 25ND
trans-1,3-Dichloropropene ug/m3 ND 25ND
Trichloroethene ug/m3 ND 25ND
Trichlorofluoromethane ug/m3 1.5J 251.5J
Vinyl acetate ug/m3 ND 25ND
Vinyl chloride ug/m3 ND 25ND
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 01/29/2019 12:09 PM
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 16 of 19
#=QL#
QUALIFIERS
Pace Project No.:
Project:
92415033
VBG-013
DEFINITIONS
DF - Dilution Factor, if reported, represents the factor applied to the reported data due to dilution of the sample aliquot.
ND - Not Detected at or above adjusted reporting limit.
TNTC - Too Numerous To Count
J - Estimated concentration above the adjusted method detection limit and below the adjusted reporting limit.
MDL - Adjusted Method Detection Limit.
PQL - Practical Quantitation Limit.
RL - Reporting Limit - The lowest concentration value that meets project requirements for quantitative data with known precision and
bias for a specific analyte in a specific matrix.
S - Surrogate
1,2-Diphenylhydrazine decomposes to and cannot be separated from Azobenzene using Method 8270. The result for each analyte is
a combined concentration.
Consistent with EPA guidelines, unrounded data are displayed and have been used to calculate % recovery and RPD values.
LCS(D) - Laboratory Control Sample (Duplicate)
MS(D) - Matrix Spike (Duplicate)
DUP - Sample Duplicate
RPD - Relative Percent Difference
NC - Not Calculable.
SG - Silica Gel - Clean-Up
U - Indicates the compound was analyzed for, but not detected.
Acid preservation may not be appropriate for 2 Chloroethylvinyl ether.
A separate vial preserved to a pH of 4-5 is recommended in SW846 Chapter 4 for the analysis of Acrolein and Acrylonitrile by EPAMethod 8260.
N-Nitrosodiphenylamine decomposes and cannot be separated from Diphenylamine using Method 8270. The result reported for
each analyte is a combined concentration.
Pace Analytical is TNI accredited. Contact your Pace PM for the current list of accredited analytes.
TNI - The NELAC Institute.
LABORATORIES
Pace Analytical Services - MinneapolisPASI-M
ANALYTE QUALIFIERS
This analyte did not meet the secondary source verification criteria for the initial calibration. The reported result should be
considered an estimated value.SS
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 01/29/2019 12:09 PM
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 17 of 19
#=CR#
QUALITY CONTROL DATA CROSS REFERENCE TABLE
Pace Project No.:
Project:
92415033
VBG-013
Lab ID Sample ID QC Batch Method QC Batch Analytical Method
Analytical
Batch
92415033001 587218SG-8 (Can#428)TO-15
92415033002 587218SG-9 (Can#719)TO-15
92415033003 587218DUP-1 (Can#1537)TO-15
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 01/29/2019 12:09 PM
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 18 of 19
Page 19 of 19

Appendix C

Cumulative Risk Calculations
Table of Contents
Version Date: February 2018
Basis: November 2017 EPA RSL Table
Site ID: 2100 S. Tryon Street
Exposure Unit ID: SG-8
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 Surface Soil Exposure Point Concentration Table
Input Form 2B Subsurface Soil Exposure Point Concentration Table
Input Form 2C Groundwater Exposure Point Concentration Table
Input Form 2D Surface Water Exposure Point Concentration Table
Input Form 2E Soil Gas Exposure Point Concentration Table
Input Form 2F Indoor Air Exposure Point Concentration Table
Output Form 1A Summary of Risk Assessment Output
Output Form 2A Resident Soil Combined Pathways
Output Form 2B Resident Groundwater Combined Pathways
Output Form 2C Non-Residential Worker Soil Combined Pathways
Output Form 2D Non-Residential Worker Groundwater Combined Pathways
Output Form 2E Construction Worker Soil Combined Pathways
Output Form 2F User Defined Soil Combined Pathways
Output Form 2G User Defined Surface Water Combined Pathways
Output 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 Source to Groundwater POE - Forward Mode
Output Form 4B Groundwater Source to Groundwater POE - Forward Mode
Output Form 4C Soil Source to Surface Water POE - Forward Mode
Output Form 4D Groundwater Source to Surface Water POE - Forward Mode
Output Form 4E Soil Source to Groundwater POE - Backward Mode
Output Form 4F Groundwater Source to Groundwater POE - Backward Mode
Output Form 4G Soil Source to Surface Water POE - Backward Mode
Output Form 4H Groundwater Source to Surface Water POE - Backward Mode
Output Section 4 - Contaminant Migration to Point of Exposure (POE) 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 - Primary Calculators
North Carolina DEQ Risk Calculator
Complete Exposure Pathways
Version Date: February 2018
Basis: November 2017 EPA RSL Table
Site ID: 2100 S. Tryon Street
Exposure Unit ID: SG-8
Note: Risk output will only be calculated for complete exposure pathways.
Receptor Pathway
Check box if
pathway
complete
Soil Combined Pathways
Groundwater Combined Pathways
Soil Combined Pathways
Groundwater Combined Pathways
Construction Worker Soil Combined Pathways
Soil Combined Pathways
Surface Water Combined Pathways
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
PRIMARY PATHWAYS
Resident
Non-Residential Worker
User Defined
Resident
Non-Residential Worker
CONTAMINANT MIGRATION PATHWAYS
Protection of Groundwater Use
Protection of Surface Water
North Carolina DEQ Risk Calculator
Exposure Factors and Target Risks
Version Date: February 2018
Basis: November 2017 EPA RSL Table
Site ID: 2100 S. Tryon Street
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) 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) 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) 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) 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: SG-8
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: February 2018
Basis: November 2017 EPA RSL Table
Site ID: 2100 S. Tryon Street
Exposure Parameter Site Specific Value Justification
Input Form 1B
Exposure Unit ID: SG-8
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) 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)2NA 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)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) 0.071 0.071 0.071
Water Exposure Time (ETevent) (hr/event)22 2
Water Event Frequency (EV) (events/day)1 1 1
User Defined Child
User Defined Adult
North Carolina DEQ Risk Calculator
Exposure Point ConcentrationsVersion Date: February 2018Basis: November 2017 EPA RSL TableSite ID: 2100 S. Tryon StreetExposure Unit ID: SG-8Note: Chemicals highlighted in orange are non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals.Exposure Point Concentration (ug/m3)Justification for Exposure Point ConcentrationCAS NumberChemicalMinimum Concentration (Qualifier)Maximum Concentration (Qualifier)UnitsLocation of Maximum ConcentrationDetection FrequencyRange of Detection LimitsConcentration Used for ScreeningBackground ValueScreening Toxicity Value (Screening Level) (n/c)Potential ARAR/TBC ValuePotential ARAR/TBC SourceCOPC Flag (Y/N)Rationale for Selection or Deletion7.767-64-1Acetoneug/m31.771-43-2Benzeneug/m318.475-15-0Carbon Disulfideug/m31.675-71-8Dichlorodifluoromethaneug/m30.72100-41-4Ethylbenzeneug/m31.2142-82-5Heptane, N-ug/m32.2110-54-3Hexane, N-ug/m31.975-09-2Methylene Chlorideug/m350.2115-07-1Propyleneug/m33.6127-18-4Tetrachloroethyleneug/m36.1108-88-3Tolueneug/m3175-69-4Trichlorofluoromethaneug/m341330-20-7Xylenesug/m3Input Form 2ESoil Gas Exposure Point Concentration TableNorth Carolina DEQ Risk Calculator
Summary of Risk Assessment Output Output Form 1A
Version Date: February 2018
Basis: November 2017 EPA RSL Table
Site ID: 2100 S. Tryon Street
Exposure Unit ID: SG-8
Receptor Pathway Carcinogenic
Risk Hazard Index Risk exceeded?
Soil Combined Pathways NC NC NC
Groundwater Combined Pathways* NC NC NC
Soil Combined Pathways NC NC NC
Groundwater Combined Pathways* NC NC NC
Construction Worker Soil Combined Pathways NC NC NC
Soil Combined Pathways NC NC NC
Surface Water Combined Pathways* NC NC NC
Receptor Pathway Carcinogenic
Risk Hazard Index Risk exceeded?
Groundwater to Indoor Air NC NC NC
Soil Gas to Indoor Air 1.7E-07 7.4E-03 NO
Indoor Air NC NC NC
Groundwater to Indoor Air NC NC NC
Soil Gas to Indoor Air 1.3E-08 5.9E-04 NO
Indoor Air NC NC NC
Pathway Source
Source Soil NC
Source Groundwater NC
Source Soil NC
Source Groundwater NC
PRIMARY CALCULATORS
Resident
Non-Residential Worker
User Defined
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.
Protection of Surface Water Exceedence of 2B at POE?
Exceedence of 2B at POE?
VAPOR INTRUSION CALCULATORS
Resident
Non-Residential Worker
CONTAMINANT MIGRATION CALCULATORS
Target POE Concentrations Exceeded?
Protection of Groundwater Use Exceedence of 2L at POE?
Exceedence of 2L at POE?
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 Soil Gas to Indoor Air
Version Date: February 2018
Basis: November 2017 EPA RSL Table
Site ID: 2100 S. Tryon Street
Exposure Unit ID: SG-8
CAS #Chemical Name:
Soil Gas
Concentration
(ug/m3)
Calculated
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
67-64-1 Acetone 7.7 0.231 -6.5E+03 7.1E-06
71-43-2 Benzene 1.7 0.051 3.6E-01 6.3E+00 1.4E-07 1.6E-03
75-15-0 Carbon Disulfide 18.4 0.552 -1.5E+02 7.6E-04
75-71-8 Dichlorodifluoromethane 1.6 0.048 -2.1E+01 4.6E-04
100-41-4 Ethylbenzene 0.72 0.0216 1.1E+00 2.1E+02 1.9E-08 2.1E-05
142-82-5 Heptane, N-1.2 0.036 -8.3E+01 8.6E-05
110-54-3 Hexane, N-2.2 0.066 -1.5E+02 9.0E-05
75-09-2 Methylene Chloride 1.9 0.057 1.0E+02 1.3E+02 5.6E-10 9.1E-05
115-07-1 Propylene 50.2 1.506 -6.3E+02 4.8E-04
127-18-4 Tetrachloroethylene 3.6 0.108 1.1E+01 8.3E+00 1.0E-08 2.6E-03
108-88-3 Toluene 6.1 0.183 -1.0E+03 3.5E-05
75-69-4 Trichlorofluoromethane 1 0.03 --
1330-20-7 Xylenes 4 0.12 -2.1E+01 1.2E-03
Cumulative: 1.7E-07 7.4E-03
All concentrations are in ug/m3
Output Form 3B
Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion
risk, no risk values are calculated for these chemicals.
North Carolina DEQ Risk Calculator
DEQ Risk Calculator - Vapor Intrusion - Non-Residential Worker Soil Gas to Indoor Air
Version Date: February 2018
Basis: November 2017 EPA RSL Table
Site ID: 2100 S. Tryon Street
Exposure Unit ID: SG-8
CAS # Chemical Name:
Soil Gas
Concentration
(ug/m3)
Calculated
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
67-64-1 Acetone 7.7 0.077 -2.7E+04 5.7E-07
71-43-2 Benzene 1.7 0.017 1.6E+00 2.6E+01 1.1E-08 1.3E-04
75-15-0 Carbon Disulfide 18.4 0.184 -6.1E+02 6.0E-05
75-71-8 Dichlorodifluoromethane 1.6 0.016 -8.8E+01 3.7E-05
100-41-4 Ethylbenzene 0.72 0.0072 4.9E+00 8.8E+02 1.5E-09 1.6E-06
142-82-5 Heptane, N-1.2 0.012 -3.5E+02 6.8E-06
110-54-3 Hexane, N-2.2 0.022 -6.1E+02 7.2E-06
75-09-2 Methylene Chloride 1.9 0.019 1.2E+03 5.3E+02 1.5E-11 7.2E-06
115-07-1 Propylene 50.2 0.502 -2.6E+03 3.8E-05
127-18-4 Tetrachloroethylene 3.6 0.036 4.7E+01 3.5E+01 7.6E-10 2.1E-04
108-88-3 Toluene 6.1 0.061 -4.4E+03 2.8E-06
75-69-4 Trichlorofluoromethane 1 0.01 --
1330-20-7 Xylenes 4 0.04 -8.8E+01 9.1E-05
Cumulative: 1.3E-08 5.9E-04
All concentrations are in ug/m3
Output Form 3E
Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion
risk, no risk values are calculated for these chemicals.
North Carolina DEQ Risk Calculator
Version Date:
Basis:
Site Name:
Site Address:
DEQ Section:
Site ID:
Exposure Unit ID:
Submittal Date:
Reviewed By:
SG-8 (DUP-1)
North Carolina Department of Environmental Quality
Risk Calculator
Vacant Property
2100 S. Tryon Street
Brownfields (Pending)
2100 S. Tryon Street
February 2018
November 2017 EPA RSL Table
2/5/2019
Prepared By:Ayla Homer
Matt Ingalls
North Carolina DEQ Risk Calculator
Table of Contents
Version Date: February 2018
Basis: November 2017 EPA RSL Table
Site ID: 2100 S. Tryon Street
Exposure Unit ID: SG-8 (DUP-1)
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 Surface Soil Exposure Point Concentration Table
Input Form 2B Subsurface Soil Exposure Point Concentration Table
Input Form 2C Groundwater Exposure Point Concentration Table
Input Form 2D Surface Water Exposure Point Concentration Table
Input Form 2E Soil Gas Exposure Point Concentration Table
Input Form 2F Indoor Air Exposure Point Concentration Table
Output Form 1A Summary of Risk Assessment Output
Output Form 2A Resident Soil Combined Pathways
Output Form 2B Resident Groundwater Combined Pathways
Output Form 2C Non-Residential Worker Soil Combined Pathways
Output Form 2D Non-Residential Worker Groundwater Combined Pathways
Output Form 2E Construction Worker Soil Combined Pathways
Output Form 2F User Defined Soil Combined Pathways
Output Form 2G User Defined Surface Water Combined Pathways
Output 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 Source to Groundwater POE - Forward Mode
Output Form 4B Groundwater Source to Groundwater POE - Forward Mode
Output Form 4C Soil Source to Surface Water POE - Forward Mode
Output Form 4D Groundwater Source to Surface Water POE - Forward Mode
Output Form 4E Soil Source to Groundwater POE - Backward Mode
Output Form 4F Groundwater Source to Groundwater POE - Backward Mode
Output Form 4G Soil Source to Surface Water POE - Backward Mode
Output Form 4H Groundwater Source to Surface Water POE - Backward Mode
Output Section 4 - Contaminant Migration to Point of Exposure (POE) 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 - Primary Calculators
North Carolina DEQ Risk Calculator
Complete Exposure Pathways
Version Date: February 2018
Basis: November 2017 EPA RSL Table
Site ID: 2100 S. Tryon Street
Exposure Unit ID: SG-8 (DUP-1)
Note: Risk output will only be calculated for complete exposure pathways.
Receptor Pathway
Check box if
pathway
complete
Soil Combined Pathways
Groundwater Combined Pathways
Soil Combined Pathways
Groundwater Combined Pathways
Construction Worker Soil Combined Pathways
Soil Combined Pathways
Surface Water Combined Pathways
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
Protection of Groundwater Use
Protection of Surface Water
Input Form 1A
VAPOR INTRUSION PATHWAYS
PRIMARY PATHWAYS
Resident
Non-Residential Worker
User Defined
North Carolina DEQ Risk Calculator
Exposure Factors and Target Risks
Version Date: February 2018
Basis: November 2017 EPA RSL Table
Site ID: 2100 S. Tryon Street
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) 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) 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) 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) 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: SG-8 (DUP-1)
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: February 2018
Basis: November 2017 EPA RSL Table
Site ID: 2100 S. Tryon Street
Exposure Parameter Site Specific Value Justification
Input Form 1B
Exposure Unit ID: SG-8 (DUP-1)
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) 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)2NA 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)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) 0.071 0.071 0.071
Water Exposure Time (ETevent) (hr/event)22 2
Water Event Frequency (EV) (events/day)1 1 1
User Defined Child
User Defined Adult
North Carolina DEQ Risk Calculator
Contaminant Migration Parameters
Version Date: February 2018
Basis: November 2017 EPA RSL Table
Site ID: 2100 S. Tryon Street
Exposure Unit ID: SG-8 (DUP-1)
Parameter Default Value
Site Specific
Value Justification
Distance to Protection of
Groundwater Point of
Exposure (POEgw) (feet)
00
Distance to Protection of
Surface Water Point of
Exposure (POEsw) (feet)
00
Depth to Base of Affected
Soils (ds) (cm)1244 1244
Length of Affected Soil
Parallel to Assumed GW Flow
Direction (L) (cm)
Site-specific
value required
Aerial extent of soil
contamination
(As) (acres) (Note minimum
acceptable value is 0.5 and
maximum acceptable value is
500.)
0.5 0.5
Fraction of Vegetative Cover
(V) (unitless)0.5 0.5
0.15 (soil to
outdoor air
pathway)
0.15
0.3 (soil to
groundwater
pathway)
0.3
0.28 (soil to
outdoor air
pathway)
0.28
0.13 (soil to
groundwater
pathway)
0.13
Total Soil Porosity (n)
(unitless)0.43 0.43
Dry Soil Bulk Density (ρb)
(g/cm3)1.5 1.5
Provide justification for the contaminant migration parameters used.
Water Filled Soil Porosity (θw)
(unitless)
Air Filled Soil Porosity (θa)
(unitless)
Input Form 1C
North Carolina DEQ Risk Calculator
Contaminant Migration Parameters
Version Date: February 2018
Basis: November 2017 EPA RSL Table
Site ID: 2100 S. Tryon Street
Exposure Unit ID: SG-8 (DUP-1)
Parameter Default Value
Site Specific
Value Justification
Provide justification for the contaminant migration parameters used.
Input Form 1C
Net Infiltration Rate (I)
(cm/yr)66 66
0.006 (soil to
outdoor air
pathway)
0.006
0.002 (soil
leaching to
groundwater
pathway)
0.002
Aquifer Hydraulic
Conductivity (K) (cm/d)
Site-specific
value required
Hydraulic Gradient (i)
(unitless)
Site-specific
value required
Average Groundwater
Temperature (Tgw) (°C)25 25
Aquifer Thickness (da) (cm)Site-specific
value required
Groundwater Source
Thickness (Sd) (cm)
Site-specific
value required
Groundwater Source Width
(Sw) (cm)
Site-specific
value required
Plume Thickness at GW/SW
Discharge (δsw) (cm)
Site-specific
value required
Plume Width at GW/SW
Discharge (Wgwsw) (cm)
Site-specific
value required
Surface Water Flowrate at
GW/SW Discharge (Qsw)
(cm3/d)
Site-specific
value required
Fraction Organic Carbon (foc)
(unitless)
North Carolina DEQ Risk Calculator
Exposure Point ConcentrationsVersion Date: February 2018Basis: November 2017 EPA RSL TableSite ID: 2100 S. Tryon StreetExposure Unit ID: SG-8 (DUP-1)Note: Chemicals highlighted in orange are non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals.Exposure Point Concentration (ug/m3)Justification for Exposure Point ConcentrationCAS NumberChemicalMinimum Concentration (Qualifier)Maximum Concentration (Qualifier)UnitsLocation of Maximum ConcentrationDetection FrequencyRange of Detection LimitsConcentration Used for ScreeningBackground ValueScreening Toxicity Value (Screening Level) (n/c)Potential ARAR/TBC ValuePotential ARAR/TBC SourceCOPC Flag (Y/N)Rationale for Selection or Deletion34.967-64-1Acetoneug/m32.171-43-2Benzeneug/m320.175-15-0Carbon Disulfideug/m34.4108-90-7Chlorobenzeneug/m30.7110-82-7Cyclohexaneug/m38.695-50-1Dichlorobenzene, 1,2-ug/m318.7106-46-7Dichlorobenzene, 1,4-ug/m31.575-71-8Dichlorodifluoromethaneug/m31.4141-78-6Ethyl Acetateug/m31.2100-41-4Ethylbenzeneug/m31.2142-82-5Heptane, N-ug/m34.4110-54-3Hexane, N-ug/m310.978-93-3Methyl Ethyl Ketone (2-Butanone)ug/m317.175-09-2Methylene Chlorideug/m336.491-20-3~Naphthaleneug/m354.8115-07-1Propyleneug/m30.76100-42-5Styreneug/m36.5127-18-4Tetrachloroethyleneug/m312.2108-88-3Tolueneug/m31.275-69-4Trichlorofluoromethaneug/m33.595-63-6Trimethylbenzene, 1,2,4-ug/m31.4108-67-8Trimethylbenzene, 1,3,5-ug/m39.51330-20-7Xylenesug/m3Input Form 2ESoil Gas Exposure Point Concentration TableNorth Carolina DEQ Risk Calculator
Summary of Risk Assessment Output Output Form 1A
Version Date: February 2018
Basis: November 2017 EPA RSL Table
Site ID: 2100 S. Tryon Street
Exposure Unit ID: SG-8 (DUP-1)
Receptor Pathway Carcinogenic
Risk Hazard Index Risk exceeded?
Soil Combined Pathways NC NC NC
Groundwater Combined Pathways* NC NC NC
Soil Combined Pathways NC NC NC
Groundwater Combined Pathways* NC NC NC
Construction Worker Soil Combined Pathways NC NC NC
Soil Combined Pathways NC NC NC
Surface Water Combined Pathways* NC NC NC
Receptor Pathway Carcinogenic
Risk Hazard Index Risk exceeded?
Groundwater to Indoor Air NC NC NC
Soil Gas to Indoor Air 1.6E-05 3.7E-01 NO
Indoor Air NC NC NC
Groundwater to Indoor Air NC NC NC
Soil Gas to Indoor Air 1.2E-06 2.9E-02 NO
Indoor Air NC NC NC
Pathway Source
Source Soil NC
Source Groundwater NC
Source Soil NC
Source Groundwater NC
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.
Protection of Surface Water Exceedence of 2B at POE?
Exceedence of 2B at POE?
VAPOR INTRUSION CALCULATORS
Resident
Non-Residential Worker
CONTAMINANT MIGRATION CALCULATORS
Target POE Concentrations Exceeded?
Protection of Groundwater Use Exceedence of 2L at POE?
Exceedence of 2L at POE?
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:
PRIMARY CALCULATORS
Resident
Non-Residential Worker
User Defined
North Carolina DEQ Risk Calculator
DEQ Risk Calculator - Vapor Intrusion - Resident Soil Gas to Indoor Air
Version Date: February 2018
Basis: November 2017 EPA RSL Table
Site ID: 2100 S. Tryon Street
Exposure Unit ID: SG-8 (DUP-1)
CAS #Chemical Name:
Soil Gas
Concentration
(ug/m3)
Calculated
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
67-64-1 Acetone 34.9 1.047 -6.5E+03 3.2E-05
71-43-2 Benzene 2.1 0.063 3.6E-01 6.3E+00 1.8E-07 2.0E-03
75-15-0 Carbon Disulfide 20.1 0.603 -1.5E+02 8.3E-04
108-90-7 Chlorobenzene 4.4 0.132 -1.0E+01 2.5E-03
110-82-7 Cyclohexane 0.7 0.021 -1.3E+03 3.4E-06
95-50-1 Dichlorobenzene, 1,2-8.6 0.258 -4.2E+01 1.2E-03
106-46-7 Dichlorobenzene, 1,4-18.7 0.561 2.6E-01 1.7E+02 2.2E-06 6.7E-04
75-71-8 Dichlorodifluoromethane 1.5 0.045 -2.1E+01 4.3E-04
141-78-6 Ethyl Acetate 1.4 0.042 -1.5E+01 5.8E-04
100-41-4 Ethylbenzene 1.2 0.036 1.1E+00 2.1E+02 3.2E-08 3.5E-05
142-82-5 Heptane, N-1.2 0.036 -8.3E+01 8.6E-05
110-54-3 Hexane, N-4.4 0.132 -1.5E+02 1.8E-04
78-93-3 Methyl Ethyl Ketone (2-Butanone)10.9 0.327 -1.0E+03 6.3E-05
75-09-2 Methylene Chloride 17.1 0.513 1.0E+02 1.3E+02 5.1E-09 8.2E-04
91-20-3 ~Naphthalene 36.4 1.092 8.3E-02 6.3E-01 1.3E-05 3.5E-01
115-07-1 Propylene 54.8 1.644 -6.3E+02 5.3E-04
100-42-5 Styrene 0.76 0.0228 -2.1E+02 2.2E-05
127-18-4 Tetrachloroethylene 6.5 0.195 1.1E+01 8.3E+00 1.8E-08 4.7E-03
108-88-3 Toluene 12.2 0.366 -1.0E+03 7.0E-05
75-69-4 Trichlorofluoromethane 1.2 0.036 --
95-63-6 Trimethylbenzene, 1,2,4-3.5 0.105 -1.3E+01 1.7E-03
108-67-8 Trimethylbenzene, 1,3,5-1.4 0.042 -1.3E+01 6.7E-04
1330-20-7 Xylenes 9.5 0.285 -2.1E+01 2.7E-03
Cumulative: 1.6E-05 3.7E-01
All concentrations are in ug/m3
Output Form 3B
Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion
risk, no risk values are calculated for these chemicals.
North Carolina DEQ Risk Calculator
DEQ Risk Calculator - Vapor Intrusion - Non-Residential Worker Soil Gas to Indoor Air
Version Date: February 2018
Basis: November 2017 EPA RSL Table
Site ID: 2100 S. Tryon Street
Exposure Unit ID: SG-8 (DUP-1)
CAS # Chemical Name:
Soil Gas
Concentration
(ug/m3)
Calculated
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
67-64-1 Acetone 34.9 0.349 - 2.7E+04 2.6E-06
71-43-2 Benzene 2.1 0.021 1.6E+00 2.6E+01 1.3E-08 1.6E-04
75-15-0 Carbon Disulfide 20.1 0.201 - 6.1E+02 6.6E-05
108-90-7 Chlorobenzene 4.4 0.044 - 4.4E+01 2.0E-04
110-82-7 Cyclohexane 0.7 0.007 - 5.3E+03 2.7E-07
95-50-1 Dichlorobenzene, 1,2- 8.6 0.086 - 1.8E+02 9.8E-05
106-46-7 Dichlorobenzene, 1,4- 18.7 0.187 1.1E+00 7.0E+02 1.7E-07 5.3E-05
75-71-8 Dichlorodifluoromethane 1.5 0.015 - 8.8E+01 3.4E-05
141-78-6 Ethyl Acetate 1.4 0.014 - 6.1E+01 4.6E-05
100-41-4 Ethylbenzene 1.2 0.012 4.9E+00 8.8E+02 2.4E-09 2.7E-06
142-82-5 Heptane, N- 1.2 0.012 - 3.5E+02 6.8E-06
110-54-3 Hexane, N- 4.4 0.044 - 6.1E+02 1.4E-05
78-93-3 Methyl Ethyl Ketone (2-Butanone) 10.9 0.109 - 4.4E+03 5.0E-06
75-09-2 Methylene Chloride 17.1 0.171 1.2E+03 5.3E+02 1.4E-10 6.5E-05
91-20-3 ~Naphthalene 36.4 0.364 3.6E-01 2.6E+00 1.0E-06 2.8E-02
115-07-1 Propylene 54.8 0.548 - 2.6E+03 4.2E-05
100-42-5 Styrene 0.76 0.0076 - 8.8E+02 1.7E-06
127-18-4 Tetrachloroethylene 6.5 0.065 4.7E+01 3.5E+01 1.4E-09 3.7E-04
108-88-3 Toluene 12.2 0.122 - 4.4E+03 5.6E-06
75-69-4 Trichlorofluoromethane 1.2 0.012 - -
95-63-6 Trimethylbenzene, 1,2,4- 3.5 0.035 - 5.3E+01 1.3E-04
108-67-8 Trimethylbenzene, 1,3,5- 1.4 0.014 - 5.3E+01 5.3E-05
1330-20-7 Xylenes 9.5 0.095 - 8.8E+01 2.2E-04
Cumulative: 1.2E-06 2.9E-02
All concentrations are in ug/m3
Output Form
Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk,
no risk values are calculated for these chemicals.
North Carolina DEQ Risk Calculator
Version Date:
Basis:
Site Name:
Site Address:
DEQ Section:
Site ID:
Exposure Unit ID:
Submittal Date:
Reviewed By:
2/5/2019
Prepared By:Ayla Homer
Matt Ingalls
SG-9
North Carolina Department of Environmental Quality
Risk Calculator
Vacant Property
2100 S. Tryon Street
Brownfields (Pending)
2100 S. Tryon Street
February 2018
November 2017 EPA RSL Table
North Carolina DEQ Risk Calculator
Table of Contents
Version Date: February 2018
Basis: November 2017 EPA RSL Table
Site ID: 2100 S. Tryon Street
Exposure Unit ID: SG-9
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 Surface Soil Exposure Point Concentration Table
Input Form 2B Subsurface Soil Exposure Point Concentration Table
Input Form 2C Groundwater Exposure Point Concentration Table
Input Form 2D Surface Water Exposure Point Concentration Table
Input Form 2E Soil Gas Exposure Point Concentration Table
Input Form 2F Indoor Air Exposure Point Concentration Table
Output Form 1A Summary of Risk Assessment Output
Output Form 2A Resident Soil Combined Pathways
Output Form 2B Resident Groundwater Combined Pathways
Output Form 2C Non-Residential Worker Soil Combined Pathways
Output Form 2D Non-Residential Worker Groundwater Combined Pathways
Output Form 2E Construction Worker Soil Combined Pathways
Output Form 2F User Defined Soil Combined Pathways
Output Form 2G User Defined Surface Water Combined Pathways
Output 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 Source to Groundwater POE - Forward Mode
Output Form 4B Groundwater Source to Groundwater POE - Forward Mode
Output Form 4C Soil Source to Surface Water POE - Forward Mode
Output Form 4D Groundwater Source to Surface Water POE - Forward Mode
Output Form 4E Soil Source to Groundwater POE - Backward Mode
Output Form 4F Groundwater Source to Groundwater POE - Backward Mode
Output Form 4G Soil Source to Surface Water POE - Backward Mode
Output Form 4H Groundwater Source to Surface Water POE - Backward Mode
Output Section 4 - Contaminant Migration to Point of Exposure (POE) 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 - Primary Calculators
North Carolina DEQ Risk Calculator
Complete Exposure Pathways
Version Date: February 2018
Basis: November 2017 EPA RSL Table
Site ID: 2100 S. Tryon Street
Exposure Unit ID: SG-9
Note: Risk output will only be calculated for complete exposure pathways.
Receptor Pathway
Check box if
pathway
complete
Soil Combined Pathways
Groundwater Combined Pathways
Soil Combined Pathways
Groundwater Combined Pathways
Construction Worker Soil Combined Pathways
Soil Combined Pathways
Surface Water Combined Pathways
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
PRIMARY PATHWAYS
Resident
Non-Residential Worker
User Defined
Resident
Non-Residential Worker
CONTAMINANT MIGRATION PATHWAYS
Protection of Groundwater Use
Protection of Surface Water
North Carolina DEQ Risk Calculator
Exposure Factors and Target Risks
Version Date: February 2018
Basis: November 2017 EPA RSL Table
Site ID: 2100 S. Tryon Street
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) 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) 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) 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) 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: SG-9
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: February 2018
Basis: November 2017 EPA RSL Table
Site ID: 2100 S. Tryon Street
Exposure Parameter Site Specific Value Justification
Input Form 1B
Exposure Unit ID: SG-9
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) 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)2NA 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)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) 0.071 0.071 0.071
Water Exposure Time (ETevent) (hr/event)22 2
Water Event Frequency (EV) (events/day)1 1 1
User Defined Child
User Defined Adult
North Carolina DEQ Risk Calculator
Summary of Risk Assessment Output Output Form 1A
Version Date: February 2018
Basis: November 2017 EPA RSL Table
Site ID: 2100 S. Tryon Street
Exposure Unit ID: SG-9
Receptor Pathway Carcinogenic
Risk Hazard Index Risk exceeded?
Soil Combined Pathways NC NC NC
Groundwater Combined Pathways* NC NC NC
Soil Combined Pathways NC NC NC
Groundwater Combined Pathways* NC NC NC
Construction Worker Soil Combined Pathways NC NC NC
Soil Combined Pathways NC NC NC
Surface Water Combined Pathways* NC NC NC
Receptor Pathway Carcinogenic
Risk Hazard Index Risk exceeded?
Groundwater to Indoor Air NC NC NC
Soil Gas to Indoor Air 1.8E-08 5.4E-03 NO
Indoor Air NC NC NC
Groundwater to Indoor Air NC NC NC
Soil Gas to Indoor Air 1.4E-09 4.3E-04 NO
Indoor Air NC NC NC
Pathway Source
Source Soil NC
Source Groundwater NC
Source Soil NC
Source Groundwater NC
PRIMARY CALCULATORS
Resident
Non-Residential Worker
User Defined
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.
Protection of Surface Water Exceedence of 2B at POE?
Exceedence of 2B at POE?
VAPOR INTRUSION CALCULATORS
Resident
Non-Residential Worker
CONTAMINANT MIGRATION CALCULATORS
Target POE Concentrations Exceeded?
Protection of Groundwater Use Exceedence of 2L at POE?
Exceedence of 2L at POE?
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 Soil Gas to Indoor Air
Version Date: February 2018
Basis: November 2017 EPA RSL Table
Site ID: 2100 S. Tryon Street
Exposure Unit ID: SG-9
CAS #Chemical Name:
Soil Gas
Concentration
(ug/m3)
Calculated
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
75-15-0 Carbon Disulfide 6.4 0.192 -1.5E+02 2.6E-04
75-71-8 Dichlorodifluoromethane 1.3 0.039 -2.1E+01 3.7E-04
75-09-2 Methylene Chloride 1.9 0.057 1.0E+02 1.3E+02 5.6E-10 9.1E-05
115-07-1 Propylene 5.3 0.159 -6.3E+02 5.1E-05
127-18-4 Tetrachloroethylene 6.4 0.192 1.1E+01 8.3E+00 1.8E-08 4.6E-03
75-69-4 Trichlorofluoromethane 1.5 0.045 --
Cumulative: 1.8E-08 5.4E-03
All concentrations are in ug/m3
Output Form 3B
Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion
risk, no risk values are calculated for these chemicals.
North Carolina DEQ Risk Calculator
DEQ Risk Calculator - Vapor Intrusion - Non-Residential Worker Soil Gas to Indoor Air
Version Date: February 2018
Basis: November 2017 EPA RSL Table
Site ID: 2100 S. Tryon Street
Exposure Unit ID: SG-9
CAS # Chemical Name:
Soil Gas
Concentration
(ug/m3)
Calculated
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
75-15-0 Carbon Disulfide 6.4 0.064 - 6.1E+02 2.1E-05
75-71-8 Dichlorodifluoromethane 1.3 0.013 - 8.8E+01 3.0E-05
75-09-2 Methylene Chloride 1.9 0.019 1.2E+03 5.3E+02 1.5E-11 7.2E-06
115-07-1 Propylene 5.3 0.053 - 2.6E+03 4.0E-06
127-18-4 Tetrachloroethylene 6.4 0.064 4.7E+01 3.5E+01 1.4E-09 3.7E-04
75-69-4 Trichlorofluoromethane 1.5 0.015 - -
Cumulative: 1.4E-09 4.3E-04
All concentrations are in ug/m3
Output Form
Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk,
no risk values are calculated for these chemicals.
North Carolina DEQ Risk Calculator