WS-3254_9547_CA_RPTS_20220729

ANNUAL MONITORING REPORT
Jerry’s Place (Incident # 9547)
983 US Highway 21
State Road, Surry County, North Carolina
July 29, 2022
Terracon Project No. 75207118
Prepared for:
North Carolina Department of Environmental Quality
Division of Waste Management
Raleigh, North Carolina

Prepared by:
Terracon Consultants, Inc.
Greensboro, North Carolina

Terracon Consultants, Inc. 7327-G West Friendly Avenue Greensboro, NC 27410
P 336-854-8135 F 336-365-7020 terracon.com
July 29, 2022

Mr. Herbert Berger, P.G.
North Carolina Department of Environmental Quality
Division of Waste Management
1646 Mail Service Center
Raleigh, North Carolina 27699-1646
Email: [e-mail]

Re: Annual Monitoring Report
Jerry’s Place
983 US Highway 21
State Road, Surry County, North Carolina
UST Incident Number: 9547
Terracon Project No. 75207118

Dear Mr. Berger:

Terracon Consultants, Inc. (Terracon) is pleased to submit this Annual Monitoring Report for the
above referenced property. This report has been prepared in general accordance with North
Carolina Department of Environmental Quality (NCDEQ), UST Section Corrective Action
Guidelines, dated January 19, 2021 and Task Authorization No. TA-02, approved on May 24, 2022.

If you have any questions regarding this report or the assessment activities, please contact us at
336-854-8135.

Sincerely,
Terracon Consultants, Inc.

Laura R. Elliott, P.G. M. Neal McElveen, P.E.
Senior Geologist Principal/Senior Consultant

F. Chris Driscoll, P.G.
Project Geologist

Enclosures

Table of Contents
A. SITE INFORMATION .............................................................................................................. 1
B. EXECUTIVE SUMMARY ........................................................................................................ 2
C. SITE HISTORY AND CHARACTERIZATION ........................................................................ 2
C.1 Site Setting ........................................................................................................................ 3
C.2 Release Summary ............................................................................................................. 3
C.3 Previous Investigations ................................................................................................... 3
C.4 Water Supply Wells .......................................................................................................... 4
C.5 Surface Water .................................................................................................................... 4
D. ASSESSMENT INFORMATION ............................................................................................. 4
D.1 Site Geology and Hydrology ........................................................................................... 4
D.2 Sampling Activities ........................................................................................................... 6
D.3 LNAPL Evaluation ............................................................................................................. 6
D.4 Groundwater Sampling Activities ................................................................................... 6
D.5 Analytical Results ............................................................................................................. 6
E. AQUIFER TESTING ................................................................................................................ 7
F. GROUNDWATER MODELING ............................................................................................... 8
E. CONCLUSIONS AND RECOMMENDATIONS .................................................................... 11
F. REFERENCES ...................................................................................................................... 12
EXHIBITS
Exhibit 1: Topographic Map
Exhibit 2: Site Diagram
Exhibit 3: Water Supply Well Location Map
Exhibit 4: Groundwater Elevation Contour Map (June 2022)
Exhibit 5: Groundwater Sample Analytical Results (June 2022)
Exhibit 6: Mann Kendall Analysis – RW-1 (BTEX)
Exhibit 7: Mann Kendall Analysis – RW-1 (Selected Constituents)
Exhibit 8: Mann Kendall Analysis – MW-2 (BTEX)
Exhibit 9: Mann Kendall Analysis – RW-2 (Selected Constituents)

Table of Contents (Continued)
TABLES

Table 1: Water Supply Well Information
Table 2: Monitoring Well Construction Details and Groundwater
Elevation Data
Table 3: Summary of Groundwater Analytical Results
Table 4: Summary of Historical Groundwater Analytical Results

APPENDICES

Appendix A: Field Notes
Appendix B: Laboratory Analytical Results and Chain of Custody Form
Appendix C: AQTESOLV Results
Appendix D: RBCA Toolkit Model Results

Annual Monitoring Report Jerry’s Place - Incident No. 9547 ■ State Road, NC
July 29, 2022 ■ Terracon Project No. 75207118

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ANNUAL MONITORING REPORT
A. SITE INFORMATION
Date of Report: July 29, 2022
NCDEQ Incident No: 9547 UST #: WS-3254 Site Name: Jerry’s Place
Site Location: 983 US Highway 21 State Road, Surry County, North Carolina Latitude: N: 36°18’52” Longitude: W: 80°51’38”
UST Owner/Operator: Jerry’s Place
Current Property Owner: Matthew Kennedy and Michael Maher 983 US Highway 21
State Road, Surry County, North Carolina
Consultant: Terracon Consultants, Inc. (Contact: Laura Elliott) 7327-G West Friendly Avenue
Greensboro, North Carolina 27410 [phone]
Laboratory: Pace National Center for Testing and Innovation (NCDEQ No. 375) 12065 Lebanon Road Mt. Juliet, Tennessee 01028
[phone] Release Information: Release Date: 1992
Estimated Quantity: Unknown
Cause of Release: Underground Storage Tank (UST) System,
Former USTs: four 4,000-gallon gasoline USTs
Currently Active Tanks: None

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I, Laura R. Elliott, P.G., a Licensed Geologist for Terracon Consultants, Inc., do certify that the
information contained in this report is correct and accurate to the best of my knowledge.

Laura R. Elliott, P.G.
NC License No. 2271

Terracon Consultants, Inc. is licensed to practice geology and engineering in North Carolina. The
certification numbers of the corporation are C-367 and F-0869, respectively.
B. EXECUTIVE SUMMARY
Jerry’s Place, the subject property located at 983 US Highway 21, is situated on a 1.58-acre parcel
(Surry County Parcel No. 495301186476) in State Road, North Carolina. The facility reportedly
operated four 4,000-gallon gasoline underground storage tanks (USTs) which were removed from
the site in 1992.

At the direction of the NCDEQ, Terracon mobilized to the site on June 10, 2022, to conduct slug
testing on three monitoring wells in order to model groundwater influence from the site. Terracon
remobilized to the site on June 16, 2022, to collect groundwater samples from eight monitoring
wells (MW-2/RW-2, MW-3/RW-3, MW-4/RW-4, MW-5, RW-5, MW-6, MW-7, and MW-8) for analysis
by EPA Method 6200.

Based on information obtained during the completion of these assessment activities, Terracon
provides the following findings and conclusions:

 Several petroleum constituents were detected at concentrations exceeding the 2L
Standards but below the GCLs in groundwater samples from wells MW-2/RW-2 and
MW-3/RW-3.
 Multiple petroleum constituents were also detected in groundwater samples from
wells MW-2/RW-2, MW-3/RW-3, and RW-5 at concentrations exceeding the
laboratory detection limits but below the 2L Standards.
 No target compounds were detected above laboratory detection limits in samples
collected from monitoring wells MW-4/RW-4, RW-5, MW-6, MW-7, or MW-8.
 Measurable thicknesses of LNAPL were not observed in the monitoring wells
gauged.
 Groundwater flow was estimated, based on groundwater elevation data, to be
toward the northeast, east, and southeast.
 The biodegradation model appears to simulate contaminant transport and
degradation between RW-5 and MW-5 accurately, with the exception of the model
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underpredicting the concentrations of contaminants ethylbenzene and 1,2,4-
trimethylbenzene.
 Based on the biodegradation model, it does not appear likely that on-site
contaminant concentrations will impact water supply well WSW-5 or WSW-6, or
other supply wells in the future.

Based on the data presented in this Annual Monitoring Report, Terracon recommends the following
activities be completed at the site:

 Based on the results of the biodegradation model, the incident may be closed with a
Notice of Residual Petroleum (NORP) and a groundwater use restriction.
C. SITE HISTORY AND CHARACTERIZATION
This Monitoring Report was prepared in response to a request by Mr. Herbert Berger, P.G., Incident
Manager with the NCDEQ Division of Waste Management, Trust Fund Branch. The report was
prepared in general accordance with 15A NCAC 2L .0115 regulations and the NCDEQ UST Section
Corrective Action Guidelines dated January 19, 2021, under the supervision of Ms. Laura Elliott, a
North Carolina licensed geologist (North Carolina License No. 2271).

The purpose of this Monitoring Report is to present the current status of the groundwater quality at
the Jerry’s Place site located at 983 US Highway 21 in State Road, Surry County, North Carolina
(Exhibit 1). Terracon completed this report to summarize the findings of groundwater sampling
activities performed on June 10 and June 16, 2022, and to model the likelihood of petroleum-
impacted groundwater onsite reaching any nearby water supply wells, based on hydraulic
conductivities collected in the field during this TA.

C.1 Site Setting
Jerry’s Place, the subject property located at 983 US Highway 21, is situated on a 1.58-acre parcel
(Surry County Parcel No. 495301186476) in State Road, North Carolina (Exhibit 1). The facility
reportedly operated four 4,000-gallon gasoline USTs which were removed from the site in 1992.
The site is currently occupied by commercial businesses (Exhibit 2).

C.2 Release Summary
According to prior reports, four 4,000-gallon gasoline USTs were removed from the site in 1992.
During closure activities, LNAPL was observed flowing into a test pit that was excavated to a depth
of approximately 19 feet below ground surface (bgs). Approximately 1,029 tons of petroleum
contaminated soil was subsequently excavated during the UST closure activities.

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C.3 Previous Investigations
According to information included in the incident folder, four 4,000-gallon gasoline USTs were
removed from the site in 1992. Eight monitoring wells (MW-1 through MW-8) and two recovery wells
(RW-5 and RW-6) were installed between 1993 and 1994. On-site monitoring wells were sampled
in 1993, 2009, 2010, 2011, 2014, 2015, 2018, and 2019. The contaminant concentrations appear
to have been decreasing since 1993. A previous consultant conducted a free product/vapor
recovery event on July 29, 1996. A mobile multiphase extraction (MMPE) event was later conducted
in 2001. According to a Groundwater Monitoring Report completed by a previous consultant and
dated January 7, 2020, methyl tert-butyl ether (MTBE) has been detected in the on-site water
supply well (WSW-5) since 2009 at a concentration below its 2L Standard.

C.4 Water Supply Wells
According to a Groundwater Monitoring Report prepared by Engineering Consulting Services (ECS)
and dated September 16, 2014, sixteen water supply wells were identified within 1,000 feet of the
site. A copy of the ECS water supply well location map is presented as Exhibit 3, and Table 1
presents information on the water supply wells located within approximately 500 feet of the site.
Water supply well WSW-5 is located on the site, approximately 90 feet southwest and cross-
gradient from the source area. Groundwater samples from well WSW-5 have not contained
detected concentrations of petroleum constituents since 2018. Well WSW-6 is located
approximately 350 feet north and upgradient of the source area of the release and has not
contained detected concentrations of petroleum constituents since at least 2009. Wells WSW-3
and WSW-4 are located approximately 550 to 600 feet southwest and cross-gradient relative to the
source area of the release. The wells previously contained detected concentrations of petroleum
products including MTBE; however, petroleum constituents have not been detected in groundwater
samples from the wells since at least 2009. Municipal water is not available to the site and
surrounding properties.

C.5 Surface Water
Based on review of the USGS Topographic Map, the closest body of water is intermittent Camp
Creek (Grass Creek, Stream Index 12-62-14, in the Yadkin Pee-Dee River Basin) located
approximately 225 feet east of the site. Surface water intakes are not known to be located within
1,500 feet of the source area of the release. Nearby surface water bodies are shown on Exhibit 1.
D. ASSESSMENT INFORMATION
D.1 Site Geology and Hydrology
The following resources were reviewed to evaluate site-specific geological and hydrogeological
characteristics.

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Elkin N Quadrangle, North Carolina, USGS 7.5-minute series topographic map, dated 2000
(Exhibit 1).
Geologic Map of North Carolina, dated 1985.
Soil Survey of Surry County, North Carolina, US Department of Agriculture, Natural
Resources Conservation Service, Web Soil Survey via the Internet,
http://websoilsurvey.nrcs.usda.gov/app/.

The site is located within the Alligator Back Formation of the Blue Ridge Belt in the Piedmont
Physiographic Province. The Piedmont Physiographic Province generally consists of low to medium
elevation, rounded hills and long rolling northeast to southwest trending ridges with incised creeks
and river channels. Rocks in the site vicinity consist of mica schist and phyllite.

In-place chemical and physical weathering of parent rocks typically forms residual soils in the
Piedmont region. Weathering is facilitated by the presence of fractures, joints, and less resistant
minerals in the rock. In areas not altered by erosion, alluvial deposition or the activities of man, the
typical residual soil profile consists of clay-rich unconsolidated materials at the surface, transitioning
to sandy silts and silty sands at depth. Typically, the boundary between soil and bedrock is not
sharply defined. This transitional zone is termed “partially weathered rock”. Information obtained
from the Surry County Soil Survey depicts soils on the site as Fairview sandy clay loam (FeC2). The
FeC2 is found on 8 to 15 percent slopes and consists of sandy clay loams that originated from
weathered schists and other micaceous metamorphic rock.

In the Piedmont, groundwater generally occurs in pore spaces within soils and in the structural
features present in the underlying rock (i.e. joints, fractures, and faults). Recharge to the water table
is primarily by precipitation infiltrating the surficial soils and percolating downward under the
influence of gravity to the water table. Typically, the water table is not a level surface, but a subdued
reflection of the land surface. The depth to the water table is not consistent and is dependent upon
several factors that include the amount of rainfall, permeability of the soil, the extent of fracturing in
the underlying rock and the influences of groundwater pumping. Groundwater typically flows in
directions sub-parallel to the ground surface and under the influence of gravity to discharge points
such as surface water features and the toes of slopes or natural springs.

Fluctuations in the depth of the water table can be expected depending on variations in
precipitation, surface water run-off and other factors not evident at the time of our subsurface
exploration. Normally, the highest levels of the water table occur in late winter and spring and the
lowest levels occur in the late summer and fall. Based on groundwater elevation measurements
taken in June 2022, groundwater is estimated to flow radially from the site toward the northeast,
east, and southeast on site.

D.2 Sampling Activities
Terracon mobilized to the site on June 10, 2022 to conduct slug testing for hydraulic conductivity on
three site monitoring wells. Terracon remobilized to the site on June 16, 2022 to collect groundwater
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samples from the site monitoring wells (MW-2/RW-2, MW-3/RW-3, MW-4/RW-4, MW-5, RW-5, MW-
6, MW-7, and MW-8). The approximate locations of the wells are depicted on Exhibit 2 and copies
of Terracon’s field notes are included in Appendix A.
D.3 LNAPL Evaluation
Measurable thicknesses of LNAPL were not encountered in the monitoring wells during this
assessment.

D.4 Groundwater Sampling Activities
Prior to sample collection, Terracon gauged the groundwater elevations in the monitoring wells
using a decontaminated electronic water level meter. The approximate locations of the wells are
shown on Exhibit 2 and monitoring well construction details and groundwater elevation
measurements are provided in Table 2. Groundwater flow was estimated, based on groundwater
elevation data, to be directed radially from the site to the northeast, east, and southeast.
Groundwater elevations and groundwater elevation contours are depicted on Exhibit 4.

The monitoring wells were purged with a submersible pump using low flow sampling techniques
(i.e., <200 milliliters per minute) prior to sampling. The following parameters were periodically
measured during purging: pH, temperature, oxidation reduction potential (ORP), dissolved oxygen
(DO), and conductivity. Purging was considered complete once the field parameters stabilized.
Monitoring wells MW-7 and MW-8 did not have adequate volume present to purge the wells;
samples were collected with new, disposable bailers without purging or collecting parameter
readings. The groundwater samples were then collected into laboratory-supplied glassware, labeled
and stored in an ice-packed cooler. The samples, along with chain-of-custody documentation, were
delivered to Pace National in Mt. Juliet, Tennessee under a standard turnaround time for analysis of
volatile organic compounds (VOCs) by EPA Method 6200B including xylenes, MTBE, EDB, and di-
isopropyl ether (IPE). Copies of field notes including groundwater parameters are provided in
Appendix B.

D.5 Analytical Results
Based on the laboratory analytical report, several petroleum constituents were identified at
concentrations exceeding the established 2L Standards in groundwater samples collected from
monitoring wells MW-2/RW-2 and MW-3/RW-3 during this sampling event.

 Benzene [234 µg/L], naphthalene [184 µg/L], n-propylbenzene [144 µg/L], 1,2,4-
trimethylbenzene [650 µg/L], and total xylenes [752 µg/L] were detected in the
groundwater sample from monitoring well MW-2/RW-2 at concentrations exceeding
the 2L Standards but below the GCLs.
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 Benzene [14.8 µg/L], naphthalene [179 µg/L], n-propylbenzene [157 µg/L], and
1,2,4-trimethylbenzene [384 µg/L] were detected in the groundwater sample from
monitoring well MW-3/RW-3 at concentrations exceeding the 2L Standards but
below the GCLs.
 Multiple petroleum constituents were also detected in groundwater samples from
wells MW-2/RW-2, MW-3/RW-3, and MW-5 at concentrations exceeding the
laboratory detection limits but below the 2L Standards.
 No petroleum constituents were detected above laboratory detection limits in
groundwater samples collected from monitoring wells MW-4/RW-4, RW-5, MW-6,
MW-7, or MW-8.

Summaries of the groundwater analytical results are included on Table 2 and Exhibit 5. The
historical groundwater analytical results summaries are in Table 4. A copy of the laboratory
analytical report is provided in Appendix B.
E. AQUIFER TESTING
To evaluate aquifer properties (i.e., aquifer permeability and the potential suitability of contaminant
migration), slug tests were conducted on June 10, 2022 at three on-site monitoring well locations
(MW-2/RW-2, MW-3/RW-3, and RW-5) by introducing a solid slug of known volume into each well
and measuring the resulting change in head following the introduction (i.e., “slug-in”). A Solinst
Levelogger pressure transducer was used to monitor the change in head within the wells. The tests
continued until water levels recovered to at least 95 percent of the initial static level within a
reasonable time period. After the water level had returned to the approximate static level, the slug
was removed and the resulting change in head was also monitored (i.e. “slug-out” test). Hydraulic
conductivity was then estimated from slug test results using AQTESOLV Pro software. Terracon’s
field notes are provided in Appendix A. Aquifer slug test summary reports and AQTESOLV data
reports are provided in Appendix C.

Time versus water displacement data collected from slug-in (falling head) and slug-out (rising head)
tests conducted at monitoring wells MW-2/RW-2, MW-3/RW-3, and RW-5 were analyzed using the
Bower and Rice (1976) Slug Test Solution for unconfined aquifers. The falling and rising head slug
tests yielded the following hydraulic conductivities (K):

Slug Test K (feet/minute)
MW-2/RW-2 (slug-in) 7.21 x 10-4
MW-2/RW-2 (slug-out) 6.57 x 10-4
MW-3/RW-3 (slug-in) 7.55 x 10-4
MW-3/RW-3 (slug-out) 5.99 x 10-4
RW-5 (slug-in) 3.30 x 10-4
RW-5 (slug-out) 4.73 x 10-4

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These K values correspond to a range of 173.4 feet per year (ft/yr) to 396.8 ft/yr with an average of
309.6 ft/yr. This range of hydraulic conductivity values falls within the conductive published range
for silts in Domenico and Schwartz, 1990. Previous borings drilled on the property indicated the
lithology was dominantly composed of clayey silt to silt, which is often seen in the Piedmont of North
Carolina. Given the agreement seen in fate and transport results with real world concentration data
using the average calculated hydraulic conductivity (see below), the calculated hydraulic
conductivities appear representative of on-site subsurface conditions.
F. GROUNDWATER MODELING
Terracon conducted a fate and transport evaluation of petroleum constituents detected in the on-
site monitoring wells to determine the potential for the constituents to migrate toward nearby water
supply wells WSW-5 and WSW-6, which are located approximately 90 feet south and 350 feet north
from the source area, respectively. Terracon utilized available site-specific data (contaminant
concentrations, hydraulic gradient, and hydraulic conductivity) to simulate natural attenuation and
transport of the contaminant plume.

The model simulations to evaluate solute transport was completed using the RBCA Tool Kit for
Chemical Releases® Version 2.6. Two different models were utilized: 1) a model simulating
biodegradation through the use of 1st order decay constants for contaminants of concern (i.e. decay
half-lives); and 2) a dispersion only model. Because the contaminant concentrations at the site in
the source area at RW-5 have generally been stable or exhibit no trend since 1993 (as
demonstrated by Mann-Kendall statistical analysis; see Exhibits 6 and 9), Terracon believes the
model that simulates biodegradation is more representative of the actual physical processes
occurring at the site. The site-specific parameters used for the models and a discussion of the
results are presented below.

Site Specific Model Inputs (RBCA Tool Kit)
Terracon utilized site-specific hydraulic conductivity data from the slug testing performed by
Terracon in June 2022 to simulate natural attenuation and transport of the contaminant plume. The
model simulations to evaluate solute transport were completed using the RBCA Toolkit. The
average hydraulic conductivity was estimated at 309.6 ft/yr for the site. The average hydraulic
gradient, 0.0363 ft/ft, was estimated for the site based on the historic groundwater elevations of
MW-2/RW-2 and MW-5 (average from ten previous sampling events). Using an estimated porosity
of 0.38, the seepage velocity used by the model was calculated as approximately 23 ft per yr. Site
specific data for soil bulk density, the partition coefficient, and fraction organic carbon were not
available, so the default values were used in the model simulation.

The depth to water in the source area is approximately 20 feet bls and sampler refusal (noted as 50
blows over any six-inch increment) was noted in previous borings at approximately 30 feet bls
(indicative of partially weather rock). The elevation difference between the site (1,285 ft) and Camp
Creek (1,255 ft) to the east is approximately 30 ft. Based on the above, the plume thickness at the
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source area was estimated to be approximately 20 feet by assuming that the aquifer extends an
additional 10 feet below the creek elevation (from 30 to 40 feet bls, consistent with the creek
elevation) prior to the occurrence of bedrock.

Based on Mann-Kendall statistical analysis (see Exhibits 6 through 9), contaminant concentrations
at the source area are either decreasing or exhibit no trend. As such, a model simulating
biodegradation for contaminants of concern appears appropriate.

Initial Model Calibration (Modeling Transport from RW-5 to MW-5)
Prior to evaluating transport from the source area to WSW-5 and WSW-6, Terracon utilized site-
specific concentration data from RW-5 and MW-5 to calibrate the desired model inputs and evaluate
how well the biodegradation model can reproduce real world data. Concentrations of benzene,
toluene, ethylbenzene, total xylenes, isopropylbenzene, MTBE, naphthalene, and 1,2,4-
trimethylbenzene detected within RW-5 during the October 2009 sampling event were used as
beginning concentrations. Contaminant concentrations at MW-5, located approximately 215 feet
directly down-gradient from RW-5, were calculated using the model.

MW-5 Concentrations: Fate and Transport Model Results vs. June 2022 MW-5 Analytical
Data
Constituent RBCA-Calculated
Concentrations
(MW-5)
June 2022 (MW-5)
Benzene 8.8 <1
Toluene 1.5 x 10-10 <1
Ethylbenzene 0.1 1.26
Xylenes (Total) 2.1 <2
Isopropylbenzene 6.6 x 10-57 <1
MTBE 0.28 <1
Naphthalene 6.4 x 10-7 <5
1,2,4-
Trimethylbenzene
6.1 x 10-14 1.89
*Concentrations are given in μg/L

Based on the initial calibration, the model calculated concentrations benzene at a marginally greater
concentration than those present at the site and concentrations of ethylbenzene and 1,2,4-
trimethylbenzene at lower concentrations than those present at the site. As such, it appears that a
1st order decay model for these specific contaminants may not accurately calculate contaminant
degradation apparent at the site. Therefore, the output of these constituents in the biodegradation
model should be compared relative to the initial calibration when evaluating the risk to WSW-5 and
WSW-6, located approximately 90 and 350 feet from the source area, respectively.

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Fate and Transport Model
Concentrations of ethylbenzene, total xylenes, isopropylbenzene, naphthalene, and 1,2,4-
trimethylbenzene identified within RW-5 during the June 2022 sampling event were used as the
contaminant concentrations in the source area to populate the biodegradation model. Contaminants
benzene, toluene, and MTBE were not included as contaminants of concern in the model as
concentrations during the June 2022 sampling event were below the MDLs. The data and inputs
used for the model are described above and are also indicated on the input screen included in
Appendix C.

Fate and Transport Model Results (Source Area to WSW-5)
Biodegradation Model Results
The biodegradation model for WSW-5 indicates that the steady-state concentrations of the selected
constituents calculated to exist at the point of exposure (POE; i.e. receptor WSW-5) range from 3.7
μg/L (total xylenes) to 3.1 x 10-36 μg/L (isopropylbenzene). The calculated total hazard index (1.5x
10-3) for the point of exposure is lower than NCDEQ’s acceptable risk tolerance of 1. Carcinogenic
constituents were less than the MDLs in the source area and therefore the total pathway
carcinogenic risk was not calculated.

As the plume appears to be either stable or shrinking, the biodegradation model calculates the
following concentrations to exist at the point of exposure after 20 years:

Calculated Concentrations at WSW-5
Constituent Calculated
Concentrations
After 20 Years
Steady State
Concentrations
Calculated Years to
Reach Steady
State Conditions
Ethylbenzene 0.46 0.46 10
Xylenes (Total) 3.7 3.7 10
Isopropylbenzene 3.1 x 10-36 3.1 x 10-36 4
Naphthalene 7.7 x 10-4 7.7 x 10-4 14
1,2,4-
Trimethylbenzene
3.0 x 10-8 3.0 x 10-8 5
*Concentrations are given in μg/L

The biodegradation model for WSW-6 indicates that the steady-state concentrations of the selected
constituents calculated to exist at the point of exposure (POE; i.e. receptor WSW-6) range from 2.3
x 10-3 μg/L (total xylenes) to 1.4 x 10-74 μg/L (isopropylbenzene). The calculated total hazard index
(7.8 x 10-7) for the point of exposure is lower than NCDEQ’s acceptable risk tolerance of 1.
Carcinogenic constituents were less than the MDLs in the source area and therefore the total
pathway carcinogenic risk was not calculated.

As the plume appears to be either stable or shrinking, the biodegradation model calculates the
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following concentrations to exist at the point of exposure after 20 years:

Calculated Concentrations at WSW-6
Constituent Calculated
Concentrations
After 20 Years
Steady State
Concentrations
Calculated Years
to Reach Steady State
Conditions
Ethylbenzene 6.9 x 10-5 6.9 x 10-5 15
Xylenes (Total) 2.3 x 10-3 2.3 x 10-3 15
Isopropylbenzene 1.4 x 10-74 1.4 x 10-74 7
Naphthalene 6.5 x 10-11 7.0 x 10-11 25
1,2,4-
Trimethylbenzene
3.9 x 10-20 3.9 x 10-20 8
*Concentrations are given in μg/L

Fate and Transport Model Summary
Summaries of the model results are provided in Appendix D. Contaminants of concern appear to
be either stable or decreasing and did not exhibit GCL exceedances during this sampling event.
Based on the biodegradation model, which appears to simulate contaminant transport and
degradation between RW-5 and MW-5 accurately, it does not appear likely that the on-site
contaminant concentrations will impact water supply wells WSW-2 or WSW-3 at levels exceeding
the 2L Standards in the future. Further, it can be extrapolated that any other water supply wells
located further from the source area are at even lower risk of future impact. The potential risk to
Camp Creek (the only other receptor located within 300 feet and down-gradient of the site) is
similarly low as it is located further from the source area than WSW-5 and the calculated
concentrations of pollutants listed under the NCAC 2B Standards fall significantly under the limits.
As such, the incident may be closed with a Notice of Residual Petroleum (NORP) and a deed
restriction for groundwater.
G. CONCLUSIONS AND RECOMMENDATIONS
Based on information obtained during the completion of these assessment activities, Terracon
provides the following findings and conclusions:

 Several petroleum constituents were detected at concentrations exceeding the 2L
Standards but below the GCLs in groundwater samples from wells MW-2/RW-2 and
MW-3/RW-3.
 Multiple petroleum constituents were also detected in groundwater samples from
wells MW-2/RW-2, MW-3/RW-3, and RW-5 at concentrations exceeding the
laboratory detection limits but below the 2L Standards.
 No target compounds were detected above laboratory detection limits in samples
collected from monitoring wells MW-4/RW-4, RW-5, MW-6, MW-7, or MW-8.
Annual Monitoring Report Jerry’s Place - Incident No. 9547 ■ State Road, NC
July 29, 2022 ■ Terracon Project No. 75207118

Responsive ■ Resourceful ■ Reliable 12

 Measurable thicknesses of LNAPL were not observed in the monitoring wells
gauged.
 Groundwater flow was estimated, based on groundwater elevation data, to be
toward the northeast, east, and southeast.
 The biodegradation model appears to simulate contaminant transport and
degradation between RW-5 and MW-5 accurately, with the exception of the model
underpredicting the concentrations of contaminants ethylbenzene and 1,2,4-
trimethylbenzene.
 Based on the biodegradation model, it does not appear likely that on-site
contaminant concentrations will impact water supply well WSW-5 or WSW-6, or
other supply wells in the future.

Based on the data presented in this Annual Monitoring Report, Terracon recommends the following
activities be completed at the site:

 Based on the results of the biodegradation model, the incident may be closed with a
Notice of Residual Petroleum (NORP) and a groundwater use restriction.

Annual Monitoring Report Jerry’s Place - Incident No. 9547 ■ State Road, NC
July 29, 2022 ■ Terracon Project No. 75207118

Responsive ■ Resourceful ■ Reliable 13

H. REFERENCES
The following sources were utilized in developing this report:
ECS, Ltd., 2020. Groundwater Monitoring Report, ECS, dated January 7, 2020.

ECS, Ltd., 2015. Groundwater Monitoring Report, ECS, dated October 14, 2015.

ECS, Ltd., 2014. Groundwater Monitoring Report, ECS, dated September 16, 2014.

S&ME, Inc., 2011. Water Supply Well Sampling Report, S&ME, Inc., dated June 13, 2011.

Terraine, Inc., 2005. Groundwater Monitoring Report, Terraine, Inc., dated November 28, 2005.

Aggressive Fluid/Vapor Recovery Evaluation, November 22, 1996.

Bain, Palmer & Associates, Inc., 1993. Site Assessment Jerry’s Convenience Store, Bain, Palmer & Associates, Inc., dated June 30, 1993.

EXHIBITS
TOPOGRAPHIC MAP
Jerry’s Place (Incident No. 9547)
983 US Highway 21
State Road, Surry County, NC
TOPOGRAPHIC MAP IMAGE COURTESY OF THE U.S. GEOLOGICAL SURVEY QUADRANGLES INCLUDE: THURMOND, NC (1/1/1971) and ELKIN NORTH, NC (1/1/2000).
7327 W Friendly Ave Ste G
Greensboro, NC 27410-6253
75207118 Project Manager:
Drawn by:
Checked by:
Approved by:
FCD
MNM
MNM
1”=2,000’
July 2022
Project No.
Scale:
File Name:
Date: 1
LE Exhibit
APPROXIMATE
SITE BOUNDARY
Jerrys Place
@A
@A
@A @A
@A
@A
@A@A
ED
"ÑÎ
"ÑÎ
Source: Esri, Maxar, Earthstar Geographics, and the GIS User Community
0 30 60Feet
Legend
"ÑÎ Former Monitoring Well
ED Water Supply Well
@A Monitoring Well
Site Boundary
Parcel Boundary
File Path:
Date:
Project No.
Scale:
LRE
JWR
MNM
MNM
2
PM:
Drawn By:
Checked By:
Approved By:7327-G West Friendly Avenue Greensboro, NC 27410
Phone: [phone] Fax: [phone]
75207118 EXHIBITNO.SITE DIAGRAM
July 2022
Jerry's Place (Incident No. 9547)983 US Highway 21State Road, Surry County, NC
WSW-5
MW-7
MW-3/RW-3(PAVED OVER)RW-6
RW-5 U.S
.
H
IGHWAY
21
MW-2/RW-2
MW-6
MW-1(DESTROYED)
MW-8
MW-4/RW-4
MW-5
1 inch = 60 ft.
WATER SUPPLY WELL LOCATION MAP
Jerry’s Place (Incident No. 9547)983 US Highway 21State Road, Surry County, NC
MIM
MNM
MNM
Scale:
3
ExhibitProject Manager:
Drawn by:
Checked by:
Approved by:
Project No.
File Name:
Date:
LRE
Site boundary
7327-G West Friendly Avenue
Greensboro, NC
75207118
Jerry’s Place
July 2022
1” = 500’
Water Supply Well
Source: Groundwater Monitoring Report, ECS, 2014
@A
@A
@A @A
@A
@A
@A@A
ED
"ÑÎ
"ÑÎ
Source: Esri, Maxar, Earthstar Geographics, and the GIS User Community
0 30 60Feet
Legend
"ÑÎ Former Monitoring Well
ED Water Supply Well
@A Monitoring Well
Groundwater Elevation Contour
Groundwater Flow Direction
Site Boundary
Parcel Boundary
File Path:
Date:
Project No.
Scale:
LRE
JWR
MNM
MNM
4
PM:
Drawn By:
Checked By:
Approved By:7327-G West Friendly Avenue Greensboro, NC 27410
Phone: [phone] Fax: [phone]
75207118 EXHIBITNO.GROUNDWATER CONTOUR MAP (JUNE 2022)
July 2022
Jerry's Place (Incident No. 9547)983 US Highway 21State Road, Surry County, NC
WSW-5
MW-7
MW-3/RW-3
NM(PAVED OVER)RW-6
RW-5 U.S
.
H
IGHWAY
21
MW-2/RW-2
MW-6
MW-1(DESTROYED)
MW-8
MW-4/RW-4
MW-5
1 inch = 60 ft.
(82.25)(79.64)
(75.50)
(75.10)
(74.01)(72.80)
(79.28)
(77.95)
74.00 76.0075.00
73.00 78.0077.0079.00
80.00
81.00
82.00
@A
@A
@A @A
@A
@A
@A@A
ED
"ÑÎ
"ÑÎ
Source: Esri, Maxar, Earthstar Geographics, and the GIS User Community
0 30 60Feet
Legend
"ÑÎ Former Monitoring Well
ED Water Supply Well
@A Monitoring Well
Site Boundary
Parcel Boundary
File Path:
Date:
Project No.
Scale:
LRE
JWR
MNM
MNM
5
PM:
Drawn By:
Checked By:
Approved By:7327-G West Friendly Avenue Greensboro, NC 27410
Phone: [phone] Fax: [phone]
75207118 EXHIBITNO.GROUNDWATER ANALYTICAL RESULTS MAP (JUNE 2022)
July 2022
Jerry's Place (Incident No. 9547)983 US Highway 21State Road, Surry County, NC
WSW-5Not Sampled
MW-7
MW-3/RW-3
(PAVED OVER)RW-6
RW-5 U.S
.
H
IGHWAY
21
MW-2/RW-2
MW-6
MW-1(DESTROYED)
MW-8
MW-4/RW-4
MW-5
1 inch = 60 ft.
MW-2VOCs by 6200Benzene = 234 µg/LEthylbenzene = 379 µg/LIsopropylbenzene = 49.8 µg/LNaphthalene = 184 µg/Ln-Propylbenzene = 144 µg/LToluene = 42.7 µg/L1,2,4-Trimethylbenzene = 650 µg/L1,3,5-Trimethylbenzene = 295 µg/LXylenes (Total) = 752 µg/L
MW-3/RW-3VOCs by 6200Benzene = 14.8 µg/Ln-Butylbenzene = 13.4 µg/Lsec-Butylbenzene = 15.9 µg/LEthylbenzene = 86.4 µg/LIsopropylbenzene = 59.1 µg/LNaphthalene = 179 µg/Ln-Propylbenzene = 157 µg/L1,2,4-Trimethylbenzene = 384 µg/L1,3,5-Trimethylbenzene = 130 µg/LXylenes (Total) = 143.5 µg/L
RW-5VOCs by 6200All Analytes Below Detection Limits MW-4/RW-4VOCs by 6200All Analytes Below Detection Limits
MW-5VOCs by 6200Ethylbenzene = 1.26 µg/LIsopropylbenzene = 1.27 µg/Ln-Propylbenzene = 3.03 µg/L1,2,4-Trimethylbenzene = 1.89 µg/L
MW-7VOCs by 6200All Analytes Below Detection Limits
MW-8VOCs by 6200All Analytes Below Detection Limits
MW-6VOCs by 6200All Analytes Below Detection Limits
Evaluation Date:Job ID:
Facility Name:Constituent:
Conducted By:Concentration Units:ug/L
Sampling Point ID:Benzene Toluene Ethylbenzene Total Xylenes
Sampling Sampling
Event Date
1 7-Oct-09 300 580 1100 3300
2 22-Apr-10 470 330 550 950
3 13-Sep-11 110 300 12000 2700
4 27-Jun-14 0.5 477 468 1290
5 29-Apr-21 0.5 0.5 42 108.2
6 16-Jun-22 0.5 0.5 0.5 1
7
8
9
10
11
12
13
14
15
16
17
18
19
20Coefficient of Variation:1.34 0.85 2.01 0.97
Mann-Kendall Statistic (S):-10 -10 -11 -11
Confidence Factor:95.2%95.2%97.2%97.2%
Concentration Trend:Decreasing Decreasing Decreasing Decreasing
Notes:
1.At least four independent sampling events per well are required for calculating the trend.Methodology is valid for 4 to 40 samples.
2.Confidence in Trend = Confidence (in percent) that constituent concentration is increasing (S>0) or decreasing (S<0): >95% = Increasing or Decreasing;
≥ 90% = Probably Increasing or Probably Decreasing; < 90% and S>0 = No Trend; < 90%, S≤0, and COV ≥ 1 = No Trend; < 90% and COV < 1 = Stable.
3.Methodology based on "MAROS: A Decision Support System for Optimizing Monitoring Plans", J.J. Aziz, M. Ling, H.S. Rifai, C.J. Newell, and J.R. Gonzales,
Ground Water , 41(3):355-367, 2003.
DISCLAIMER: The GSI Mann-Kendall Toolkit is available "as is". Considerable care has been exercised in preparing this software product; however, no party, including without
limitation GSI Environmental Inc., makes any representation or warranty regarding the accuracy, correctness, or completeness of the information contained herein, and no such
party shall be liable for any direct, indirect, consequential, incidental or other damages resulting from the use of this product or the information contained herein. Information in
this publication is subject to change without notice. GSI Environmental Inc., disclaims any responsibility or obligation to update the information contained herein.
RW-5 (BTEX) CONCENTRATION (ug/L)
GSI Environmental Inc., www.gsi-net.com
GSI MANN-KENDALL TOOLKIT
for Constituent Trend Analysis
12-Jul-22 75207118
Jerry's Place RW-5 (BTEX)
C Driscoll
0.1
1
10
100
1000
10000
100000
10/06 07/09 04/12 12/14 09/17 06/20 03/23Concentration (ug/L)Sampling Date
Benzene
Toluene
Ethylbenzene
Total Xylenes
Exhibit 6:Mann Kendall Analysis – RW-1 (BTEX)
Evaluation Date:Job ID:
Facility Name:Constituent:
Conducted By:Concentration Units:ug/L
Sampling Point ID:Isopropylbenzene MTBE Naphthalene 1,2,4 Trimethylbenzene
Sampling Sampling
Event Date
1 7-Oct-09 85 34 560 1100
2 22-Apr-10 51 68 150 280
3 13-Sep-11 83 15 380 1100
4 27-Jun-14 35.5 0.5 238 794
5 29-Apr-21 13.3 0.5 58.5 131
6 16-Jun-22 0.5 0.5 0.5 0.5
7
8
9
10
11
12
13
14
15
16
17
18
19
20Coefficient of Variation:0.78 1.37 0.91 0.87
Mann-Kendall Statistic (S):-13 -10 -11 -10
Confidence Factor:99.2%95.2%97.2%95.2%
Concentration Trend:Decreasing Decreasing Decreasing Decreasing
Notes:
1.At least four independent sampling events per well are required for calculating the trend.Methodology is valid for 4 to 40 samples.
2.Confidence in Trend = Confidence (in percent) that constituent concentration is increasing (S>0) or decreasing (S<0): >95% = Increasing or Decreasing;
≥ 90% = Probably Increasing or Probably Decreasing; < 90% and S>0 = No Trend; < 90%, S≤0, and COV ≥ 1 = No Trend; < 90% and COV < 1 = Stable.
3.Methodology based on "MAROS: A Decision Support System for Optimizing Monitoring Plans", J.J. Aziz, M. Ling, H.S. Rifai, C.J. Newell, and J.R. Gonzales,
Ground Water, 41(3):355-367, 2003.
DISCLAIMER: The GSI Mann-Kendall Toolkit is available "as is". Considerable care has been exercised in preparing this software product; however, no party, including without
limitation GSI Environmental Inc., makes any representation or warranty regarding the accuracy, correctness, or completeness of the information contained herein, and no such
party shall be liable for any direct, indirect, consequential, incidental or other damages resulting from the use of this product or the information contained herein. Information in
this publication is subject to change without notice. GSI Environmental Inc., disclaims any responsibility or obligation to update the information contained herein.
RW-5 (SELECTED CONSTITUENTS) CONCENTRATION (ug/L)
GSI Environmental Inc., www.gsi-net.com
GSI MANN-KENDALL TOOLKIT
for Constituent Trend Analysis
6-Jun-22 75159687B
JH Foster RW-5 (Selected constituents)
C Driscoll
0.1
1
10
100
1000
10000
10/06 07/09 04/12 12/14 09/17 06/20 03/23Concentration (ug/L)Sampling Date
Isopropylbenzene
MTBE
Naphthalene
1,2,4 Trimethylbenzene
Exhibit 7: Mann Kendall Analysis – RW-1 (Selected Constituents)
Evaluation Date:Job ID:
Facility Name:Constituent:
Conducted By:Concentration Units:ug/L
Sampling Point ID:Benzene Toluene Ethylbenzene Total Xylenes
Sampling Sampling
Event Date
1 23-May-93 14000 54000 2000 17000
2 7-Oct-09 2400 800 960 1230
3 22-Apr-10 1700 1400 1200 3800
4 13-Sep-11 2300 4000 1300 5500
5 27-Jun-14 1830 6390 1530 7320
6 22-Sep-15 1410 1120 1270 4750
7 20-Feb-18 1300 150 750 1200
8 12-Dec-19 583 1040 1230 4650
9 29-Apr-21 510 455 590 1716
10 16-Jun-22 234 42.7 379 752
11
12
13
14
15
16
17
18
19
20Coefficient of Variation:1.55 2.40 0.42 1.00
Mann-Kendall Statistic (S):-41 -25 -23 -19
Confidence Factor:>99.9%98.6%97.7%94.6%
Concentration Trend:Decreasing Decreasing Decreasing Prob. Decreasing
Notes:
1.At least four independent sampling events per well are required for calculating the trend.Methodology is valid for 4 to 40 samples.
2.Confidence in Trend = Confidence (in percent) that constituent concentration is increasing (S>0) or decreasing (S<0): >95% = Increasing or Decreasing;
≥ 90% = Probably Increasing or Probably Decreasing; < 90% and S>0 = No Trend; < 90%, S≤0, and COV ≥ 1 = No Trend; < 90% and COV < 1 = Stable.
3.Methodology based on "MAROS: A Decision Support System for Optimizing Monitoring Plans", J.J. Aziz, M. Ling, H.S. Rifai, C.J. Newell, and J.R. Gonzales,
Ground Water, 41(3):355-367, 2003.
DISCLAIMER: The GSI Mann-Kendall Toolkit is available "as is". Considerable care has been exercised in preparing this software product; however, no party, including without
limitation GSI Environmental Inc., makes any representation or warranty regarding the accuracy, correctness, or completeness of the information contained herein, and no such
party shall be liable for any direct, indirect, consequential, incidental or other damages resulting from the use of this product or the information contained herein. Information in
this publication is subject to change without notice. GSI Environmental Inc., disclaims any responsibility or obligation to update the information contained herein.
MW-2 (BTEX) CONCENTRATION (ug/L)
GSI Environmental Inc., www.gsi-net.com
GSI MANN-KENDALL TOOLKIT
for Constituent Trend Analysis
12-Jul-22 75207118
Jerry's Place MW-2 (BTEX)
C Driscoll
1
10
100
1000
10000
100000
01/00 09/13 05/27 01/41 10/54 06/68 02/82 10/95 07/09 03/23 11/36Concentration (ug/L)Sampling Date
Benzene
Toluene
Ethylbenzene
Total Xylenes
Exhibit 8: Mann Kendall Analysis – MW-2 (BTEX)
Evaluation Date:Job ID:
Facility Name:Constituent:
Conducted By:Concentration Units:ug/L
Sampling Point ID:Isopropylbenzene MTBE Naphthalene 1,2,4 Trimethylbenzene
Sampling Sampling
Event Date
1 23-May-93 25000
2 7-Oct-09 95 380 590 350
3 22-Apr-10 100 260 600 1300
4 13-Sep-11 91 220 560 1500
5 27-Jun-14 80 0.5 761 2300
6 22-Sep-15 100 74 403 2010
7 20-Feb-18 110 51 230 590
8 12-Dec-19 76 0.5 504 1530
9 29-Apr-21 47.3 2.09 194 639
10 16-Jun-22 49.8 0.5 184 650
11
12
13
14
15
16
17
18
19
20Coefficient of Variation:0.27 3.03 0.46 0.57
Mann-Kendall Statistic (S):-15 -34 -24 2
Confidence Factor:92.5%100.0%99.4%54.0%
Concentration Trend:Prob. Decreasing Decreasing Decreasing No Trend
Notes:
1.At least four independent sampling events per well are required for calculating the trend.Methodology is valid for 4 to 40 samples.
2.Confidence in Trend = Confidence (in percent) that constituent concentration is increasing (S>0) or decreasing (S<0): >95% = Increasing or Decreasing;
≥ 90% = Probably Increasing or Probably Decreasing; < 90% and S>0 = No Trend; < 90%, S≤0, and COV ≥ 1 = No Trend; < 90% and COV < 1 = Stable.
3.Methodology based on "MAROS: A Decision Support System for Optimizing Monitoring Plans", J.J. Aziz, M. Ling, H.S. Rifai, C.J. Newell, and J.R. Gonzales,
Ground Water, 41(3):355-367, 2003.
DISCLAIMER: The GSI Mann-Kendall Toolkit is available "as is". Considerable care has been exercised in preparing this software product; however, no party, including without
limitation GSI Environmental Inc., makes any representation or warranty regarding the accuracy, correctness, or completeness of the information contained herein, and no such
party shall be liable for any direct, indirect, consequential, incidental or other damages resulting from the use of this product or the information contained herein. Information in
this publication is subject to change without notice. GSI Environmental Inc., disclaims any responsibility or obligation to update the information contained herein.
MW-2 (SELECTED CONSTITUENTS) CONCENTRATION (ug/L)
GSI Environmental Inc., www.gsi-net.com
GSI MANN-KENDALL TOOLKIT
for Constituent Trend Analysis
6-Jun-22 75159687B
JH Foster MW-2 (Selected constituents)
C Driscoll
0.1
1
10
100
1000
10000
100000
01/00 09/13 05/27 01/41 10/54 06/68 02/82 10/95 07/09 03/23 11/36Concentration (ug/L)Sampling Date
Isopropylbenzene
MTBE
Naphthalene
1,2,4 Trimethylbenzene
Exhibit 9: Mann Kendall Analysis – RW-2 (Selected Constituents)

TABLES
TABLE 1
Water Supply Well Information
Jerry’s Place
State Road, Surry County, North Carolina
Terracon Project No. 75207118
NCDEQ Incident No. 9547
May 17, 2021

Note: Table generated from Groundwater Monitoring Report, ECS, dated September 16, 2014
TABLE 2Monitoring Well Construction Details and Groundwater Elevation DataJerry's PlaceState Road, Surry County, North CarolinaTerracon Project No. 75207118NCDEQ Incident No. 9547Well IDScreened Interval (ft. TOC)Total Well Depth (ft. BTOC)Top of Casing ElevationDate Water Level MeasuredDepth to Water (ft. BTOC)Groundwater ElevationCommentsMW-2/RW-2 12-32 30 101.45 6/16/2022 19.20 82.25 4-inch diameter Type II well MW-3/RW-3 10-30 30 97.99 6/16/2022 18.35 79.64 4-inch diameter Type II well MW-4/RW-4 2-12 30 95.94 6/16/2022 20.44 75.50 4-inch diameter Type II well MW-5 15-25 15 80.57 6/16/2022 5.47 75.10 2-inch diameter Type II well; Stick-up completionRW-5 Unknown 27 97.99 6/16/2022 20.04 77.95 4-inch diameter Type II well MW-6 15-25 25 99.63 6/16/2022 20.35 79.28 2-inch diameter Type II well MW-7 15-25 25 97.20 6/16/2022 24.40 72.80 2-inch diameter Type II well MW-8 15-25 25 98.51 6/16/2022 24.50 74.01 2-inch diameter Type II well Notes:ft = feet TOC = Top of CasingbTOC = below TOC
TABLE 3Summary of Groundwater Analytical Results983 US Highway 21State Road, Surry County, North CarolinaNCDEQ Incident No. 9547Terracon Project No. 75207118Monitoring WellI.D. Date Collected 4/29/2021510<20.0 <20.04.21 590 47.3 10.6 2.09 194 97.8 23.3 455 639 206 17166/16/2022234<20.0 <20.0 <20.0379 49.8<200 <20.0184 144<20.042.7 650 295 7524/29/2021<10.012.6 12.2<10.099.4 59.4<10.0 <10.0207 130<10.0 <10.0478 134 2336/16/202214.8 13.4 15.9<10.086.4 59.1<100 <10.0179 157<10.0 <10.0384 130 143.54/29/2021<1.0 <1.0 <1.0 <1.0 <1.01.41<10.0 <1.0 <5.0 <1.0 <1.0 <1.0 <1.0 <1.0 <2.06/16/2022<1.00 <1.00 <1.00 <1.00 <1.00 <1.00 <1.00 <1.00 <5.00 <1.00 <1.00 <1.00 <1.00 <1.00 <2.004/29/2021<1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <10.0 <1.0 <5.0 <1.0 <1.0 <1.0 <1.0 <1.0 <2.06/16/2022<1.00 <1.00 <1.00 <1.001.26 1.27<1.00 <1.00 <5.003.03<1.00 <1.001.89<1.00 <2.004/29/2021<5.0 <5.0 <5.0 <5.042 13.30<50.0 <5.058.5 21.30<5.0 <5.0131 17.4 108.26/16/2022<1.00 <1.00 <1.00 <1.00 <1.00 <1.00 <1.00 <1.00 <5.00 <1.00 <1.00 <1.00 <1.00 <1.00 <2.00MW-6 6/16/2022<1.00 <1.00 <1.00 <1.00 <1.00 <1.00 <1.00 <1.00 <5.00 <1.00 <1.00 <1.00 <1.00 <1.00 <2.00MW-7 6/16/2022<1.00 <1.00 <1.00 <1.00 <1.00 <1.00 <1.00 <1.00 <5.00 <1.00 <1.00 <1.00 <1.00 <1.00 <2.00MW-8 6/16/2022<1.00 <1.00 <1.00 <1.00 <1.00 <1.00 <1.00 <1.00 <5.00 <1.00 <1.00 <1.00 <1.00 <1.00 <2.00WSW-5 4/29/2021<1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <10.0 <1.0 <5.0 <1.0 <1.0 <1.0 <1.0 <1.0 <2.0FB-1 4/29/2021<1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <10.0 <1.0 <5.0 <1.0 <1.0 <1.0 <1.0 <1.0 <2.01 70 70 70 600 70 100 20 6 70 70 600 400 400 5005000 6900 8500 70000 84500 25000 100000 20000 6000 30000 70000 260000 28500 25000 85500Notes:All measurements in micrograms per liter (μ/L)Bold indicated detection above Laboratory Reported Detection Limit NE = Not Established indicates concentrations exceeding 2LJ = Detected below laboratory reporting limit indicates concentrations exceeding GCLNR = Not ReportedGroundwater standards pursuant to NCDEQ, UST Section [Guidelines for Assessment and Corrective Action]FB= Field Blank dated January 19, 2021Analytical MethodContaminant of Concern →Di-isopropyl etherEthylbenzeneIsopropylbenzeneN-ButylbenzeneSec-ButylbenzeneBenzeneVOCs by Method 6200B1,2,4-TrimethylbenzeneTolueneStyrenen-PropylbenzeneXylenes (Total)1,3,5-TrimethylbenzeneGross Contamination Levels for Groundwater (GCL)NaphthaleneNorth Carolina Groundwater Quality Standards (2L Standards)4-Methyl-2-PentanoneMethyl Tert-Butyl etherRW-5MW-5MW-4/RW-4MW-3/RW-3MW-2/RW-21 of 1

APPENDIX A
FIELD NOTES
NCDEQ 2020-2023-Jerrys Place ■ Incident # 9547 State Road, NC Date Pictures Taken: June 16, 2022 ■ Terracon Project No. 75207118
Responsive ■ Resourceful ■ Reliable

Photo 1 Overview of site, facing WNW. Photo 2 Monitoring well MW-5 stick up well in background. Storm drain access in foreground.

Photo 3 Monitoring well MW-5 stick up well. Photo 4 Monitoring well MW-4/RW-4.

Photo 5 Monitoring well MW-3/RW-3. Photo 6 Monitoring well MW-2/RW-2.
NCDEQ 2020-2023-Jerrys Place ■ Incident # 9547 State Road, NC Date Pictures Taken: June 16, 2022 ■ Terracon Project No. 75207118
Responsive ■ Resourceful ■ Reliable

Photo 7 Monitoring well MW-6. Photo 8 Recovery well RW-5.

Photo 9 Monitoring well MW-8. Photo 10 Monitoring well MW-7.

Photo 11 View from site toward cemetery to the east. Photo 12 View from site toward cemetery to the east.
NCDEQ 2020-2023-Jerrys Place ■ Incident # 9547 State Road, NC Date Pictures Taken: June 16, 2022 ■ Terracon Project No. 75207118
Responsive ■ Resourceful ■ Reliable

Photo 13 View from site toward the north. Photo 14 View from site toward the south.

Photo 15 View from site toward the west.

APPENDIX B
LABORATORY ANALYTICAL RESULTS AND
CHAIN-OF-CUSTODY FORMS

ANALYTICAL REPORT
June 27, 2022
Terracon - Greensboro, NC
Sample Delivery Group:L1506699
Samples Received:06/17/2022
Project Number:75207118
Description:Jerry's Place
Report To:Laura Elliott
7327-G, West Friendly Ave
Greensboro, NC 27410
Entire Report Reviewed By:
June 27, 2022
[Preliminary Report]
Heather J Wagner
Project Manager
Results relate only to the items tested or calibrated and are reported as rounded values. This test report shall not be reproduced, except in full, without written approval of the laboratory. Where applicable, sampling conducted by Pace Analytical National is performed per guidance provided in laboratory standard operating procedures ENV-SOP-MTJL-0067 and ENV-SOP-MTJL-0068. Where sampling conducted by the customer, results relate to the accuracy of the information provided, and as the samples are received.
Pace Analytical National
12065 Lebanon Rd Mount Juliet, TN 37122 615-758-5858 800-767-5859 www.pacenational.com
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
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June 28, 2022
Heather J Wagner
Project Manager
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
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TABLE OF CONTENTS
Cp: Cover Page 1
Tc: Table of Contents 2
Ss: Sample Summary 3
Cn: Case Narrative 4
Sr: Sample Results 5
MW-2 L1506699-01 5
MW-3 L1506699-02 7
MW-4 L1506699-03 9
MW-5 L1506699-04 11
RW-5 L1506699-05 13
MW-6 L1506699-06 15
MW-7 L1506699-07 17
MW-8 L1506699-08 19
Qc: Quality Control Summary 21
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 21
Gl: Glossary of Terms 25
Al: Accreditations & Locations 26
Sc: Sample Chain of Custody 27
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
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SAMPLE SUMMARY
Collected by Collected date/time Received date/time
MW-2 L1506699-01 GW Dylan Edwards 06/16/22 14:20 06/17/22 09:00
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 WG1885693 20 06/27/22 00:15 06/27/22 00:15 JHH Mt. Juliet, TN
Collected by Collected date/time Received date/time
MW-3 L1506699-02 GW Dylan Edwards 06/16/22 13:35 06/17/22 09:00
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 WG1885693 10 06/27/22 00:37 06/27/22 00:37 JHH Mt. Juliet, TN
Collected by Collected date/time Received date/time
MW-4 L1506699-03 GW Dylan Edwards 06/16/22 12:10 06/17/22 09:00
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 WG1885693 1 06/26/22 20:33 06/26/22 20:33 JHH Mt. Juliet, TN
Collected by Collected date/time Received date/time
MW-5 L1506699-04 GW Dylan Edwards 06/16/22 10:50 06/17/22 09:00
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 WG1885693 1 06/26/22 20:55 06/26/22 20:55 JHH Mt. Juliet, TN
Collected by Collected date/time Received date/time
RW-5 L1506699-05 GW Dylan Edwards 06/16/22 12:45 06/17/22 09:00
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 WG1885693 1 06/26/22 21:18 06/26/22 21:18 JHH Mt. Juliet, TN
Collected by Collected date/time Received date/time
MW-6 L1506699-06 GW Dylan Edwards 06/16/22 09:10 06/17/22 09:00
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 WG1885693 1 06/26/22 21:40 06/26/22 21:40 JHH Mt. Juliet, TN
Collected by Collected date/time Received date/time
MW-7 L1506699-07 GW Dylan Edwards 06/16/22 10:00 06/17/22 09:00
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 WG1885693 1 06/26/22 22:02 06/26/22 22:02 JHH Mt. Juliet, TN
Collected by Collected date/time Received date/time
MW-8 L1506699-08 GW Dylan Edwards 06/16/22 09:45 06/17/22 09:00
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 WG1885693 1 06/26/22 22:24 06/26/22 22:24 JHH Mt. Juliet, TN
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
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CASE NARRATIVE
All sample aliquots were received at the correct temperature, in the proper containers, with the
appropriate preservatives, and within method specified holding times, unless qualified or notated within
the report. Where applicable, all MDL (LOD) and RDL (LOQ) values reported for environmental samples
have been corrected for the dilution factor used in the analysis. All Method and Batch Quality Control
are within established criteria except where addressed in this case narrative, a non-conformance form
or properly qualified within the sample results. By my digital signature below, I affirm to the best of my
knowledge, all problems/anomalies observed by the laboratory as having the potential to affect the
quality of the data have been identified by the laboratory, and no information or data have been
knowingly withheld that would affect the quality of the data.
[Preliminary Report]
Heather J Wagner
Project Manager
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
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Heather J Wagner
Project Manager
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SAMPLE RESULTS - 01
L1506699
MW-2
Collected date/time: 06/16/22 14:20
Volatile Organic Compounds (GC/MS) by Method 6200B-2011
Result Qualifier RDL Dilution Analysis Batch
Analyte ug/l ug/l date / time
Acetone ND 1000 20 06/27/2022 00:15 WG1885693
Acrolein ND 1000 20 06/27/2022 00:15 WG1885693
Acrylonitrile ND 200 20 06/27/2022 00:15 WG1885693
Benzene 234 20.0 20 06/27/2022 00:15 WG1885693
Bromobenzene ND 20.0 20 06/27/2022 00:15 WG1885693
Bromodichloromethane ND 20.0 20 06/27/2022 00:15 WG1885693
Bromoform ND 20.0 20 06/27/2022 00:15 WG1885693
Bromomethane ND 100 20 06/27/2022 00:15 WG1885693
n-Butylbenzene ND 20.0 20 06/27/2022 00:15 WG1885693
sec-Butylbenzene ND 20.0 20 06/27/2022 00:15 WG1885693
tert-Butylbenzene ND 20.0 20 06/27/2022 00:15 WG1885693
Carbon tetrachloride ND 20.0 20 06/27/2022 00:15 WG1885693
Chlorobenzene ND 20.0 20 06/27/2022 00:15 WG1885693
Chlorodibromomethane ND 20.0 20 06/27/2022 00:15 WG1885693
Chloroethane ND 100 20 06/27/2022 00:15 WG1885693
Chloroform ND 100 20 06/27/2022 00:15 WG1885693
Chloromethane ND 50.0 20 06/27/2022 00:15 WG1885693
2-Chlorotoluene ND 20.0 20 06/27/2022 00:15 WG1885693
4-Chlorotoluene ND 20.0 20 06/27/2022 00:15 WG1885693
1,2-Dibromo-3-Chloropropane ND 100 20 06/27/2022 00:15 WG1885693
1,2-Dibromoethane ND 20.0 20 06/27/2022 00:15 WG1885693
Dibromomethane ND 20.0 20 06/27/2022 00:15 WG1885693
1,2-Dichlorobenzene ND 20.0 20 06/27/2022 00:15 WG1885693
1,3-Dichlorobenzene ND 20.0 20 06/27/2022 00:15 WG1885693
1,4-Dichlorobenzene ND 20.0 20 06/27/2022 00:15 WG1885693
Dichlorodifluoromethane ND 100 20 06/27/2022 00:15 WG1885693
1,1-Dichloroethane ND 20.0 20 06/27/2022 00:15 WG1885693
1,2-Dichloroethane ND 20.0 20 06/27/2022 00:15 WG1885693
1,1-Dichloroethene ND 20.0 20 06/27/2022 00:15 WG1885693
cis-1,2-Dichloroethene ND 20.0 20 06/27/2022 00:15 WG1885693
trans-1,2-Dichloroethene ND 20.0 20 06/27/2022 00:15 WG1885693
1,2-Dichloropropane ND 20.0 20 06/27/2022 00:15 WG1885693
1,1-Dichloropropene ND 20.0 20 06/27/2022 00:15 WG1885693
1,3-Dichloropropane ND 20.0 20 06/27/2022 00:15 WG1885693
2,2-Dichloropropane ND 20.0 20 06/27/2022 00:15 WG1885693
Di-isopropyl ether ND 20.0 20 06/27/2022 00:15 WG1885693
Ethylbenzene 379 20.0 20 06/27/2022 00:15 WG1885693
Hexachloro-1,3-butadiene ND 20.0 20 06/27/2022 00:15 WG1885693
Isopropylbenzene 49.8 20.0 20 06/27/2022 00:15 WG1885693
p-Isopropyltoluene ND 20.0 20 06/27/2022 00:15 WG1885693
2-Butanone (MEK)ND 200 20 06/27/2022 00:15 WG1885693
Methylene Chloride ND J4 100 20 06/27/2022 00:15 WG1885693
4-Methyl-2-pentanone (MIBK)ND 200 20 06/27/2022 00:15 WG1885693
Methyl tert-butyl ether ND 20.0 20 06/27/2022 00:15 WG1885693
Naphthalene 184 100 20 06/27/2022 00:15 WG1885693
n-Propylbenzene 144 20.0 20 06/27/2022 00:15 WG1885693
Styrene ND 20.0 20 06/27/2022 00:15 WG1885693
1,1,1,2-Tetrachloroethane ND 20.0 20 06/27/2022 00:15 WG1885693
1,1,2,2-Tetrachloroethane ND 20.0 20 06/27/2022 00:15 WG1885693
Tetrachloroethene ND 20.0 20 06/27/2022 00:15 WG1885693
Toluene 42.7 20.0 20 06/27/2022 00:15 WG1885693
1,2,3-Trichlorobenzene ND 20.0 20 06/27/2022 00:15 WG1885693
1,2,4-Trichlorobenzene ND 20.0 20 06/27/2022 00:15 WG1885693
1,1,1-Trichloroethane ND 20.0 20 06/27/2022 00:15 WG1885693
1,1,2-Trichloroethane ND 20.0 20 06/27/2022 00:15 WG1885693
Trichloroethene ND 20.0 20 06/27/2022 00:15 WG1885693
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
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SAMPLE RESULTS - 01
L1506699
MW-2
Collected date/time: 06/16/22 14:20
Volatile Organic Compounds (GC/MS) by Method 6200B-2011
Result Qualifier RDL Dilution Analysis Batch
Analyte ug/l ug/l date / time
Trichlorofluoromethane ND 100 20 06/27/2022 00:15 WG1885693
1,2,3-Trichloropropane ND 50.0 20 06/27/2022 00:15 WG1885693
1,2,4-Trimethylbenzene 650 20.0 20 06/27/2022 00:15 WG1885693
1,3,5-Trimethylbenzene 295 20.0 20 06/27/2022 00:15 WG1885693
Vinyl chloride ND 20.0 20 06/27/2022 00:15 WG1885693
o-Xylene 281 20.0 20 06/27/2022 00:15 WG1885693
m&p-Xylenes 471 40.0 20 06/27/2022 00:15 WG1885693
(S) Toluene-d8 99.7 80.0-120 06/27/2022 00:15 WG1885693
(S) 4-Bromofluorobenzene 99.8 77.0-126 06/27/2022 00:15 WG1885693
(S) 1,2-Dichloroethane-d4 104 70.0-130 06/27/2022 00:15 WG1885693
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
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SAMPLE RESULTS - 02
L1506699
MW-3
Collected date/time: 06/16/22 13:35
Volatile Organic Compounds (GC/MS) by Method 6200B-2011
Result Qualifier RDL Dilution Analysis Batch
Analyte ug/l ug/l date / time
Acetone ND 500 10 06/27/2022 00:37 WG1885693
Acrolein ND 500 10 06/27/2022 00:37 WG1885693
Acrylonitrile ND 100 10 06/27/2022 00:37 WG1885693
Benzene 14.8 10.0 10 06/27/2022 00:37 WG1885693
Bromobenzene ND 10.0 10 06/27/2022 00:37 WG1885693
Bromodichloromethane ND 10.0 10 06/27/2022 00:37 WG1885693
Bromoform ND 10.0 10 06/27/2022 00:37 WG1885693
Bromomethane ND 50.0 10 06/27/2022 00:37 WG1885693
n-Butylbenzene 13.4 10.0 10 06/27/2022 00:37 WG1885693
sec-Butylbenzene 15.9 10.0 10 06/27/2022 00:37 WG1885693
tert-Butylbenzene ND 10.0 10 06/27/2022 00:37 WG1885693
Carbon tetrachloride ND 10.0 10 06/27/2022 00:37 WG1885693
Chlorobenzene ND 10.0 10 06/27/2022 00:37 WG1885693
Chlorodibromomethane ND 10.0 10 06/27/2022 00:37 WG1885693
Chloroethane ND 50.0 10 06/27/2022 00:37 WG1885693
Chloroform ND 50.0 10 06/27/2022 00:37 WG1885693
Chloromethane ND 25.0 10 06/27/2022 00:37 WG1885693
2-Chlorotoluene ND 10.0 10 06/27/2022 00:37 WG1885693
4-Chlorotoluene ND 10.0 10 06/27/2022 00:37 WG1885693
1,2-Dibromo-3-Chloropropane ND 50.0 10 06/27/2022 00:37 WG1885693
1,2-Dibromoethane ND 10.0 10 06/27/2022 00:37 WG1885693
Dibromomethane ND 10.0 10 06/27/2022 00:37 WG1885693
1,2-Dichlorobenzene ND 10.0 10 06/27/2022 00:37 WG1885693
1,3-Dichlorobenzene ND 10.0 10 06/27/2022 00:37 WG1885693
1,4-Dichlorobenzene ND 10.0 10 06/27/2022 00:37 WG1885693
Dichlorodifluoromethane ND 50.0 10 06/27/2022 00:37 WG1885693
1,1-Dichloroethane ND 10.0 10 06/27/2022 00:37 WG1885693
1,2-Dichloroethane ND 10.0 10 06/27/2022 00:37 WG1885693
1,1-Dichloroethene ND 10.0 10 06/27/2022 00:37 WG1885693
cis-1,2-Dichloroethene ND 10.0 10 06/27/2022 00:37 WG1885693
trans-1,2-Dichloroethene ND 10.0 10 06/27/2022 00:37 WG1885693
1,2-Dichloropropane ND 10.0 10 06/27/2022 00:37 WG1885693
1,1-Dichloropropene ND 10.0 10 06/27/2022 00:37 WG1885693
1,3-Dichloropropane ND 10.0 10 06/27/2022 00:37 WG1885693
2,2-Dichloropropane ND 10.0 10 06/27/2022 00:37 WG1885693
Di-isopropyl ether ND 10.0 10 06/27/2022 00:37 WG1885693
Ethylbenzene 86.4 10.0 10 06/27/2022 00:37 WG1885693
Hexachloro-1,3-butadiene ND 10.0 10 06/27/2022 00:37 WG1885693
Isopropylbenzene 59.1 10.0 10 06/27/2022 00:37 WG1885693
p-Isopropyltoluene ND 10.0 10 06/27/2022 00:37 WG1885693
2-Butanone (MEK)ND 100 10 06/27/2022 00:37 WG1885693
Methylene Chloride ND J4 50.0 10 06/27/2022 00:37 WG1885693
4-Methyl-2-pentanone (MIBK)ND 100 10 06/27/2022 00:37 WG1885693
Methyl tert-butyl ether ND 10.0 10 06/27/2022 00:37 WG1885693
Naphthalene 179 50.0 10 06/27/2022 00:37 WG1885693
n-Propylbenzene 157 10.0 10 06/27/2022 00:37 WG1885693
Styrene ND 10.0 10 06/27/2022 00:37 WG1885693
1,1,1,2-Tetrachloroethane ND 10.0 10 06/27/2022 00:37 WG1885693
1,1,2,2-Tetrachloroethane ND 10.0 10 06/27/2022 00:37 WG1885693
Tetrachloroethene ND 10.0 10 06/27/2022 00:37 WG1885693
Toluene ND 10.0 10 06/27/2022 00:37 WG1885693
1,2,3-Trichlorobenzene ND 10.0 10 06/27/2022 00:37 WG1885693
1,2,4-Trichlorobenzene ND 10.0 10 06/27/2022 00:37 WG1885693
1,1,1-Trichloroethane ND 10.0 10 06/27/2022 00:37 WG1885693
1,1,2-Trichloroethane ND 10.0 10 06/27/2022 00:37 WG1885693
Trichloroethene ND 10.0 10 06/27/2022 00:37 WG1885693
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
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SAMPLE RESULTS - 02
L1506699
MW-3
Collected date/time: 06/16/22 13:35
Volatile Organic Compounds (GC/MS) by Method 6200B-2011
Result Qualifier RDL Dilution Analysis Batch
Analyte ug/l ug/l date / time
Trichlorofluoromethane ND 50.0 10 06/27/2022 00:37 WG1885693
1,2,3-Trichloropropane ND 25.0 10 06/27/2022 00:37 WG1885693
1,2,4-Trimethylbenzene 384 10.0 10 06/27/2022 00:37 WG1885693
1,3,5-Trimethylbenzene 130 10.0 10 06/27/2022 00:37 WG1885693
Vinyl chloride ND 10.0 10 06/27/2022 00:37 WG1885693
o-Xylene 51.0 10.0 10 06/27/2022 00:37 WG1885693
m&p-Xylenes 92.5 20.0 10 06/27/2022 00:37 WG1885693
(S) Toluene-d8 99.8 80.0-120 06/27/2022 00:37 WG1885693
(S) 4-Bromofluorobenzene 99.6 77.0-126 06/27/2022 00:37 WG1885693
(S) 1,2-Dichloroethane-d4 105 70.0-130 06/27/2022 00:37 WG1885693
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
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SAMPLE RESULTS - 03
L1506699
MW-4
Collected date/time: 06/16/22 12:10
Volatile Organic Compounds (GC/MS) by Method 6200B-2011
Result Qualifier RDL Dilution Analysis Batch
Analyte ug/l ug/l date / time
Acetone ND 50.0 1 06/26/2022 20:33 WG1885693
Acrolein ND 50.0 1 06/26/2022 20:33 WG1885693
Acrylonitrile ND 10.0 1 06/26/2022 20:33 WG1885693
Benzene ND 1.00 1 06/26/2022 20:33 WG1885693
Bromobenzene ND 1.00 1 06/26/2022 20:33 WG1885693
Bromodichloromethane ND 1.00 1 06/26/2022 20:33 WG1885693
Bromoform ND 1.00 1 06/26/2022 20:33 WG1885693
Bromomethane ND 5.00 1 06/26/2022 20:33 WG1885693
n-Butylbenzene ND 1.00 1 06/26/2022 20:33 WG1885693
sec-Butylbenzene ND 1.00 1 06/26/2022 20:33 WG1885693
tert-Butylbenzene ND 1.00 1 06/26/2022 20:33 WG1885693
Carbon tetrachloride ND 1.00 1 06/26/2022 20:33 WG1885693
Chlorobenzene ND 1.00 1 06/26/2022 20:33 WG1885693
Chlorodibromomethane ND 1.00 1 06/26/2022 20:33 WG1885693
Chloroethane ND 5.00 1 06/26/2022 20:33 WG1885693
Chloroform ND 5.00 1 06/26/2022 20:33 WG1885693
Chloromethane ND 2.50 1 06/26/2022 20:33 WG1885693
2-Chlorotoluene ND 1.00 1 06/26/2022 20:33 WG1885693
4-Chlorotoluene ND 1.00 1 06/26/2022 20:33 WG1885693
1,2-Dibromo-3-Chloropropane ND 5.00 1 06/26/2022 20:33 WG1885693
1,2-Dibromoethane ND 1.00 1 06/26/2022 20:33 WG1885693
Dibromomethane ND 1.00 1 06/26/2022 20:33 WG1885693
1,2-Dichlorobenzene ND 1.00 1 06/26/2022 20:33 WG1885693
1,3-Dichlorobenzene ND 1.00 1 06/26/2022 20:33 WG1885693
1,4-Dichlorobenzene ND 1.00 1 06/26/2022 20:33 WG1885693
Dichlorodifluoromethane ND 5.00 1 06/26/2022 20:33 WG1885693
1,1-Dichloroethane ND 1.00 1 06/26/2022 20:33 WG1885693
1,2-Dichloroethane ND 1.00 1 06/26/2022 20:33 WG1885693
1,1-Dichloroethene ND 1.00 1 06/26/2022 20:33 WG1885693
cis-1,2-Dichloroethene ND 1.00 1 06/26/2022 20:33 WG1885693
trans-1,2-Dichloroethene ND 1.00 1 06/26/2022 20:33 WG1885693
1,2-Dichloropropane ND 1.00 1 06/26/2022 20:33 WG1885693
1,1-Dichloropropene ND 1.00 1 06/26/2022 20:33 WG1885693
1,3-Dichloropropane ND 1.00 1 06/26/2022 20:33 WG1885693
2,2-Dichloropropane ND 1.00 1 06/26/2022 20:33 WG1885693
Di-isopropyl ether ND 1.00 1 06/26/2022 20:33 WG1885693
Ethylbenzene ND 1.00 1 06/26/2022 20:33 WG1885693
Hexachloro-1,3-butadiene ND 1.00 1 06/26/2022 20:33 WG1885693
Isopropylbenzene ND 1.00 1 06/26/2022 20:33 WG1885693
p-Isopropyltoluene ND 1.00 1 06/26/2022 20:33 WG1885693
2-Butanone (MEK)ND 10.0 1 06/26/2022 20:33 WG1885693
Methylene Chloride ND J4 5.00 1 06/26/2022 20:33 WG1885693
4-Methyl-2-pentanone (MIBK)ND 10.0 1 06/26/2022 20:33 WG1885693
Methyl tert-butyl ether ND 1.00 1 06/26/2022 20:33 WG1885693
Naphthalene ND 5.00 1 06/26/2022 20:33 WG1885693
n-Propylbenzene ND 1.00 1 06/26/2022 20:33 WG1885693
Styrene ND 1.00 1 06/26/2022 20:33 WG1885693
1,1,1,2-Tetrachloroethane ND 1.00 1 06/26/2022 20:33 WG1885693
1,1,2,2-Tetrachloroethane ND 1.00 1 06/26/2022 20:33 WG1885693
Tetrachloroethene ND 1.00 1 06/26/2022 20:33 WG1885693
Toluene ND 1.00 1 06/26/2022 20:33 WG1885693
1,2,3-Trichlorobenzene ND 1.00 1 06/26/2022 20:33 WG1885693
1,2,4-Trichlorobenzene ND 1.00 1 06/26/2022 20:33 WG1885693
1,1,1-Trichloroethane ND 1.00 1 06/26/2022 20:33 WG1885693
1,1,2-Trichloroethane ND 1.00 1 06/26/2022 20:33 WG1885693
Trichloroethene ND 1.00 1 06/26/2022 20:33 WG1885693
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Terracon - Greensboro, NC 75207118 L1506699 06/27/22 17:04 9 of 27
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Terracon - Greensboro, NC 75207118 L1506699 06/28/22 12:28 9 of 27
SAMPLE RESULTS - 03
L1506699
MW-4
Collected date/time: 06/16/22 12:10
Volatile Organic Compounds (GC/MS) by Method 6200B-2011
Result Qualifier RDL Dilution Analysis Batch
Analyte ug/l ug/l date / time
Trichlorofluoromethane ND 5.00 1 06/26/2022 20:33 WG1885693
1,2,3-Trichloropropane ND 2.50 1 06/26/2022 20:33 WG1885693
1,2,4-Trimethylbenzene ND 1.00 1 06/26/2022 20:33 WG1885693
1,3,5-Trimethylbenzene ND 1.00 1 06/26/2022 20:33 WG1885693
Vinyl chloride ND 1.00 1 06/26/2022 20:33 WG1885693
o-Xylene ND 1.00 1 06/26/2022 20:33 WG1885693
m&p-Xylenes ND 2.00 1 06/26/2022 20:33 WG1885693
(S) Toluene-d8 100 80.0-120 06/26/2022 20:33 WG1885693
(S) 4-Bromofluorobenzene 95.3 77.0-126 06/26/2022 20:33 WG1885693
(S) 1,2-Dichloroethane-d4 105 70.0-130 06/26/2022 20:33 WG1885693
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Terracon - Greensboro, NC 75207118 L1506699 06/27/22 17:04 10 of 27
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Terracon - Greensboro, NC 75207118 L1506699 06/28/22 12:28 10 of 27
SAMPLE RESULTS - 04
L1506699
MW-5
Collected date/time: 06/16/22 10:50
Volatile Organic Compounds (GC/MS) by Method 6200B-2011
Result Qualifier RDL Dilution Analysis Batch
Analyte ug/l ug/l date / time
Acetone ND 50.0 1 06/26/2022 20:55 WG1885693
Acrolein ND 50.0 1 06/26/2022 20:55 WG1885693
Acrylonitrile ND 10.0 1 06/26/2022 20:55 WG1885693
Benzene ND 1.00 1 06/26/2022 20:55 WG1885693
Bromobenzene ND 1.00 1 06/26/2022 20:55 WG1885693
Bromodichloromethane ND 1.00 1 06/26/2022 20:55 WG1885693
Bromoform ND 1.00 1 06/26/2022 20:55 WG1885693
Bromomethane ND 5.00 1 06/26/2022 20:55 WG1885693
n-Butylbenzene ND 1.00 1 06/26/2022 20:55 WG1885693
sec-Butylbenzene ND 1.00 1 06/26/2022 20:55 WG1885693
tert-Butylbenzene ND 1.00 1 06/26/2022 20:55 WG1885693
Carbon tetrachloride ND 1.00 1 06/26/2022 20:55 WG1885693
Chlorobenzene ND 1.00 1 06/26/2022 20:55 WG1885693
Chlorodibromomethane ND 1.00 1 06/26/2022 20:55 WG1885693
Chloroethane ND 5.00 1 06/26/2022 20:55 WG1885693
Chloroform ND 5.00 1 06/26/2022 20:55 WG1885693
Chloromethane ND 2.50 1 06/26/2022 20:55 WG1885693
2-Chlorotoluene ND 1.00 1 06/26/2022 20:55 WG1885693
4-Chlorotoluene ND 1.00 1 06/26/2022 20:55 WG1885693
1,2-Dibromo-3-Chloropropane ND 5.00 1 06/26/2022 20:55 WG1885693
1,2-Dibromoethane ND 1.00 1 06/26/2022 20:55 WG1885693
Dibromomethane ND 1.00 1 06/26/2022 20:55 WG1885693
1,2-Dichlorobenzene ND 1.00 1 06/26/2022 20:55 WG1885693
1,3-Dichlorobenzene ND 1.00 1 06/26/2022 20:55 WG1885693
1,4-Dichlorobenzene ND 1.00 1 06/26/2022 20:55 WG1885693
Dichlorodifluoromethane ND 5.00 1 06/26/2022 20:55 WG1885693
1,1-Dichloroethane ND 1.00 1 06/26/2022 20:55 WG1885693
1,2-Dichloroethane ND 1.00 1 06/26/2022 20:55 WG1885693
1,1-Dichloroethene ND 1.00 1 06/26/2022 20:55 WG1885693
cis-1,2-Dichloroethene ND 1.00 1 06/26/2022 20:55 WG1885693
trans-1,2-Dichloroethene ND 1.00 1 06/26/2022 20:55 WG1885693
1,2-Dichloropropane ND 1.00 1 06/26/2022 20:55 WG1885693
1,1-Dichloropropene ND 1.00 1 06/26/2022 20:55 WG1885693
1,3-Dichloropropane ND 1.00 1 06/26/2022 20:55 WG1885693
2,2-Dichloropropane ND 1.00 1 06/26/2022 20:55 WG1885693
Di-isopropyl ether ND 1.00 1 06/26/2022 20:55 WG1885693
Ethylbenzene 1.26 1.00 1 06/26/2022 20:55 WG1885693
Hexachloro-1,3-butadiene ND 1.00 1 06/26/2022 20:55 WG1885693
Isopropylbenzene 1.27 1.00 1 06/26/2022 20:55 WG1885693
p-Isopropyltoluene ND 1.00 1 06/26/2022 20:55 WG1885693
2-Butanone (MEK)ND 10.0 1 06/26/2022 20:55 WG1885693
Methylene Chloride ND J4 5.00 1 06/26/2022 20:55 WG1885693
4-Methyl-2-pentanone (MIBK)ND 10.0 1 06/26/2022 20:55 WG1885693
Methyl tert-butyl ether ND 1.00 1 06/26/2022 20:55 WG1885693
Naphthalene ND 5.00 1 06/26/2022 20:55 WG1885693
n-Propylbenzene 3.03 1.00 1 06/26/2022 20:55 WG1885693
Styrene ND 1.00 1 06/26/2022 20:55 WG1885693
1,1,1,2-Tetrachloroethane ND 1.00 1 06/26/2022 20:55 WG1885693
1,1,2,2-Tetrachloroethane ND 1.00 1 06/26/2022 20:55 WG1885693
Tetrachloroethene ND 1.00 1 06/26/2022 20:55 WG1885693
Toluene ND 1.00 1 06/26/2022 20:55 WG1885693
1,2,3-Trichlorobenzene ND 1.00 1 06/26/2022 20:55 WG1885693
1,2,4-Trichlorobenzene ND 1.00 1 06/26/2022 20:55 WG1885693
1,1,1-Trichloroethane ND 1.00 1 06/26/2022 20:55 WG1885693
1,1,2-Trichloroethane ND 1.00 1 06/26/2022 20:55 WG1885693
Trichloroethene ND 1.00 1 06/26/2022 20:55 WG1885693
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Terracon - Greensboro, NC 75207118 L1506699 06/27/22 17:04 11 of 27
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Terracon - Greensboro, NC 75207118 L1506699 06/28/22 12:28 11 of 27
SAMPLE RESULTS - 04
L1506699
MW-5
Collected date/time: 06/16/22 10:50
Volatile Organic Compounds (GC/MS) by Method 6200B-2011
Result Qualifier RDL Dilution Analysis Batch
Analyte ug/l ug/l date / time
Trichlorofluoromethane ND 5.00 1 06/26/2022 20:55 WG1885693
1,2,3-Trichloropropane ND 2.50 1 06/26/2022 20:55 WG1885693
1,2,4-Trimethylbenzene 1.89 1.00 1 06/26/2022 20:55 WG1885693
1,3,5-Trimethylbenzene ND 1.00 1 06/26/2022 20:55 WG1885693
Vinyl chloride ND 1.00 1 06/26/2022 20:55 WG1885693
o-Xylene ND 1.00 1 06/26/2022 20:55 WG1885693
m&p-Xylenes ND 2.00 1 06/26/2022 20:55 WG1885693
(S) Toluene-d8 101 80.0-120 06/26/2022 20:55 WG1885693
(S) 4-Bromofluorobenzene 99.3 77.0-126 06/26/2022 20:55 WG1885693
(S) 1,2-Dichloroethane-d4 109 70.0-130 06/26/2022 20:55 WG1885693
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Terracon - Greensboro, NC 75207118 L1506699 06/27/22 17:04 12 of 27
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Terracon - Greensboro, NC 75207118 L1506699 06/28/22 12:28 12 of 27
SAMPLE RESULTS - 05
L1506699
RW-5
Collected date/time: 06/16/22 12:45
Volatile Organic Compounds (GC/MS) by Method 6200B-2011
Result Qualifier RDL Dilution Analysis Batch
Analyte ug/l ug/l date / time
Acetone ND 50.0 1 06/26/2022 21:18 WG1885693
Acrolein ND 50.0 1 06/26/2022 21:18 WG1885693
Acrylonitrile ND 10.0 1 06/26/2022 21:18 WG1885693
Benzene ND 1.00 1 06/26/2022 21:18 WG1885693
Bromobenzene ND 1.00 1 06/26/2022 21:18 WG1885693
Bromodichloromethane ND 1.00 1 06/26/2022 21:18 WG1885693
Bromoform ND 1.00 1 06/26/2022 21:18 WG1885693
Bromomethane ND 5.00 1 06/26/2022 21:18 WG1885693
n-Butylbenzene ND 1.00 1 06/26/2022 21:18 WG1885693
sec-Butylbenzene ND 1.00 1 06/26/2022 21:18 WG1885693
tert-Butylbenzene ND 1.00 1 06/26/2022 21:18 WG1885693
Carbon tetrachloride ND 1.00 1 06/26/2022 21:18 WG1885693
Chlorobenzene ND 1.00 1 06/26/2022 21:18 WG1885693
Chlorodibromomethane ND 1.00 1 06/26/2022 21:18 WG1885693
Chloroethane ND 5.00 1 06/26/2022 21:18 WG1885693
Chloroform ND 5.00 1 06/26/2022 21:18 WG1885693
Chloromethane ND 2.50 1 06/26/2022 21:18 WG1885693
2-Chlorotoluene ND 1.00 1 06/26/2022 21:18 WG1885693
4-Chlorotoluene ND 1.00 1 06/26/2022 21:18 WG1885693
1,2-Dibromo-3-Chloropropane ND 5.00 1 06/26/2022 21:18 WG1885693
1,2-Dibromoethane ND 1.00 1 06/26/2022 21:18 WG1885693
Dibromomethane ND 1.00 1 06/26/2022 21:18 WG1885693
1,2-Dichlorobenzene ND 1.00 1 06/26/2022 21:18 WG1885693
1,3-Dichlorobenzene ND 1.00 1 06/26/2022 21:18 WG1885693
1,4-Dichlorobenzene ND 1.00 1 06/26/2022 21:18 WG1885693
Dichlorodifluoromethane ND 5.00 1 06/26/2022 21:18 WG1885693
1,1-Dichloroethane ND 1.00 1 06/26/2022 21:18 WG1885693
1,2-Dichloroethane ND 1.00 1 06/26/2022 21:18 WG1885693
1,1-Dichloroethene ND 1.00 1 06/26/2022 21:18 WG1885693
cis-1,2-Dichloroethene ND 1.00 1 06/26/2022 21:18 WG1885693
trans-1,2-Dichloroethene ND 1.00 1 06/26/2022 21:18 WG1885693
1,2-Dichloropropane ND 1.00 1 06/26/2022 21:18 WG1885693
1,1-Dichloropropene ND 1.00 1 06/26/2022 21:18 WG1885693
1,3-Dichloropropane ND 1.00 1 06/26/2022 21:18 WG1885693
2,2-Dichloropropane ND 1.00 1 06/26/2022 21:18 WG1885693
Di-isopropyl ether ND 1.00 1 06/26/2022 21:18 WG1885693
Ethylbenzene ND 1.00 1 06/26/2022 21:18 WG1885693
Hexachloro-1,3-butadiene ND 1.00 1 06/26/2022 21:18 WG1885693
Isopropylbenzene ND 1.00 1 06/26/2022 21:18 WG1885693
p-Isopropyltoluene ND 1.00 1 06/26/2022 21:18 WG1885693
2-Butanone (MEK)ND 10.0 1 06/26/2022 21:18 WG1885693
Methylene Chloride ND J4 5.00 1 06/26/2022 21:18 WG1885693
4-Methyl-2-pentanone (MIBK)ND 10.0 1 06/26/2022 21:18 WG1885693
Methyl tert-butyl ether ND 1.00 1 06/26/2022 21:18 WG1885693
Naphthalene ND 5.00 1 06/26/2022 21:18 WG1885693
n-Propylbenzene ND 1.00 1 06/26/2022 21:18 WG1885693
Styrene ND 1.00 1 06/26/2022 21:18 WG1885693
1,1,1,2-Tetrachloroethane ND 1.00 1 06/26/2022 21:18 WG1885693
1,1,2,2-Tetrachloroethane ND 1.00 1 06/26/2022 21:18 WG1885693
Tetrachloroethene ND 1.00 1 06/26/2022 21:18 WG1885693
Toluene ND 1.00 1 06/26/2022 21:18 WG1885693
1,2,3-Trichlorobenzene ND 1.00 1 06/26/2022 21:18 WG1885693
1,2,4-Trichlorobenzene ND 1.00 1 06/26/2022 21:18 WG1885693
1,1,1-Trichloroethane ND 1.00 1 06/26/2022 21:18 WG1885693
1,1,2-Trichloroethane ND 1.00 1 06/26/2022 21:18 WG1885693
Trichloroethene ND 1.00 1 06/26/2022 21:18 WG1885693
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Terracon - Greensboro, NC 75207118 L1506699 06/27/22 17:04 13 of 27
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Terracon - Greensboro, NC 75207118 L1506699 06/28/22 12:28 13 of 27
SAMPLE RESULTS - 05
L1506699
RW-5
Collected date/time: 06/16/22 12:45
Volatile Organic Compounds (GC/MS) by Method 6200B-2011
Result Qualifier RDL Dilution Analysis Batch
Analyte ug/l ug/l date / time
Trichlorofluoromethane ND 5.00 1 06/26/2022 21:18 WG1885693
1,2,3-Trichloropropane ND 2.50 1 06/26/2022 21:18 WG1885693
1,2,4-Trimethylbenzene ND 1.00 1 06/26/2022 21:18 WG1885693
1,3,5-Trimethylbenzene ND 1.00 1 06/26/2022 21:18 WG1885693
Vinyl chloride ND 1.00 1 06/26/2022 21:18 WG1885693
o-Xylene ND 1.00 1 06/26/2022 21:18 WG1885693
m&p-Xylenes ND 2.00 1 06/26/2022 21:18 WG1885693
(S) Toluene-d8 102 80.0-120 06/26/2022 21:18 WG1885693
(S) 4-Bromofluorobenzene 97.9 77.0-126 06/26/2022 21:18 WG1885693
(S) 1,2-Dichloroethane-d4 105 70.0-130 06/26/2022 21:18 WG1885693
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Terracon - Greensboro, NC 75207118 L1506699 06/27/22 17:04 14 of 27
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Terracon - Greensboro, NC 75207118 L1506699 06/28/22 12:28 14 of 27
SAMPLE RESULTS - 06
L1506699
MW-6
Collected date/time: 06/16/22 09:10
Volatile Organic Compounds (GC/MS) by Method 6200B-2011
Result Qualifier RDL Dilution Analysis Batch
Analyte ug/l ug/l date / time
Acetone ND 50.0 1 06/26/2022 21:40 WG1885693
Acrolein ND 50.0 1 06/26/2022 21:40 WG1885693
Acrylonitrile ND 10.0 1 06/26/2022 21:40 WG1885693
Benzene ND 1.00 1 06/26/2022 21:40 WG1885693
Bromobenzene ND 1.00 1 06/26/2022 21:40 WG1885693
Bromodichloromethane ND 1.00 1 06/26/2022 21:40 WG1885693
Bromoform ND 1.00 1 06/26/2022 21:40 WG1885693
Bromomethane ND 5.00 1 06/26/2022 21:40 WG1885693
n-Butylbenzene ND 1.00 1 06/26/2022 21:40 WG1885693
sec-Butylbenzene ND 1.00 1 06/26/2022 21:40 WG1885693
tert-Butylbenzene ND 1.00 1 06/26/2022 21:40 WG1885693
Carbon tetrachloride ND 1.00 1 06/26/2022 21:40 WG1885693
Chlorobenzene ND 1.00 1 06/26/2022 21:40 WG1885693
Chlorodibromomethane ND 1.00 1 06/26/2022 21:40 WG1885693
Chloroethane ND 5.00 1 06/26/2022 21:40 WG1885693
Chloroform ND 5.00 1 06/26/2022 21:40 WG1885693
Chloromethane ND 2.50 1 06/26/2022 21:40 WG1885693
2-Chlorotoluene ND 1.00 1 06/26/2022 21:40 WG1885693
4-Chlorotoluene ND 1.00 1 06/26/2022 21:40 WG1885693
1,2-Dibromo-3-Chloropropane ND 5.00 1 06/26/2022 21:40 WG1885693
1,2-Dibromoethane ND 1.00 1 06/26/2022 21:40 WG1885693
Dibromomethane ND 1.00 1 06/26/2022 21:40 WG1885693
1,2-Dichlorobenzene ND 1.00 1 06/26/2022 21:40 WG1885693
1,3-Dichlorobenzene ND 1.00 1 06/26/2022 21:40 WG1885693
1,4-Dichlorobenzene ND 1.00 1 06/26/2022 21:40 WG1885693
Dichlorodifluoromethane ND 5.00 1 06/26/2022 21:40 WG1885693
1,1-Dichloroethane ND 1.00 1 06/26/2022 21:40 WG1885693
1,2-Dichloroethane ND 1.00 1 06/26/2022 21:40 WG1885693
1,1-Dichloroethene ND 1.00 1 06/26/2022 21:40 WG1885693
cis-1,2-Dichloroethene ND 1.00 1 06/26/2022 21:40 WG1885693
trans-1,2-Dichloroethene ND 1.00 1 06/26/2022 21:40 WG1885693
1,2-Dichloropropane ND 1.00 1 06/26/2022 21:40 WG1885693
1,1-Dichloropropene ND 1.00 1 06/26/2022 21:40 WG1885693
1,3-Dichloropropane ND 1.00 1 06/26/2022 21:40 WG1885693
2,2-Dichloropropane ND 1.00 1 06/26/2022 21:40 WG1885693
Di-isopropyl ether ND 1.00 1 06/26/2022 21:40 WG1885693
Ethylbenzene ND 1.00 1 06/26/2022 21:40 WG1885693
Hexachloro-1,3-butadiene ND 1.00 1 06/26/2022 21:40 WG1885693
Isopropylbenzene ND 1.00 1 06/26/2022 21:40 WG1885693
p-Isopropyltoluene ND 1.00 1 06/26/2022 21:40 WG1885693
2-Butanone (MEK)ND 10.0 1 06/26/2022 21:40 WG1885693
Methylene Chloride ND J4 5.00 1 06/26/2022 21:40 WG1885693
4-Methyl-2-pentanone (MIBK)ND 10.0 1 06/26/2022 21:40 WG1885693
Methyl tert-butyl ether ND 1.00 1 06/26/2022 21:40 WG1885693
Naphthalene ND 5.00 1 06/26/2022 21:40 WG1885693
n-Propylbenzene ND 1.00 1 06/26/2022 21:40 WG1885693
Styrene ND 1.00 1 06/26/2022 21:40 WG1885693
1,1,1,2-Tetrachloroethane ND 1.00 1 06/26/2022 21:40 WG1885693
1,1,2,2-Tetrachloroethane ND 1.00 1 06/26/2022 21:40 WG1885693
Tetrachloroethene ND 1.00 1 06/26/2022 21:40 WG1885693
Toluene ND 1.00 1 06/26/2022 21:40 WG1885693
1,2,3-Trichlorobenzene ND 1.00 1 06/26/2022 21:40 WG1885693
1,2,4-Trichlorobenzene ND 1.00 1 06/26/2022 21:40 WG1885693
1,1,1-Trichloroethane ND 1.00 1 06/26/2022 21:40 WG1885693
1,1,2-Trichloroethane ND 1.00 1 06/26/2022 21:40 WG1885693
Trichloroethene ND 1.00 1 06/26/2022 21:40 WG1885693
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Terracon - Greensboro, NC 75207118 L1506699 06/27/22 17:04 15 of 27
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Terracon - Greensboro, NC 75207118 L1506699 06/28/22 12:28 15 of 27
SAMPLE RESULTS - 06
L1506699
MW-6
Collected date/time: 06/16/22 09:10
Volatile Organic Compounds (GC/MS) by Method 6200B-2011
Result Qualifier RDL Dilution Analysis Batch
Analyte ug/l ug/l date / time
Trichlorofluoromethane ND 5.00 1 06/26/2022 21:40 WG1885693
1,2,3-Trichloropropane ND 2.50 1 06/26/2022 21:40 WG1885693
1,2,4-Trimethylbenzene ND 1.00 1 06/26/2022 21:40 WG1885693
1,3,5-Trimethylbenzene ND 1.00 1 06/26/2022 21:40 WG1885693
Vinyl chloride ND 1.00 1 06/26/2022 21:40 WG1885693
o-Xylene ND 1.00 1 06/26/2022 21:40 WG1885693
m&p-Xylenes ND 2.00 1 06/26/2022 21:40 WG1885693
(S) Toluene-d8 102 80.0-120 06/26/2022 21:40 WG1885693
(S) 4-Bromofluorobenzene 96.8 77.0-126 06/26/2022 21:40 WG1885693
(S) 1,2-Dichloroethane-d4 111 70.0-130 06/26/2022 21:40 WG1885693
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Terracon - Greensboro, NC 75207118 L1506699 06/27/22 17:04 16 of 27
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Terracon - Greensboro, NC 75207118 L1506699 06/28/22 12:28 16 of 27
SAMPLE RESULTS - 07
L1506699
MW-7
Collected date/time: 06/16/22 10:00
Volatile Organic Compounds (GC/MS) by Method 6200B-2011
Result Qualifier RDL Dilution Analysis Batch
Analyte ug/l ug/l date / time
Acetone ND 50.0 1 06/26/2022 22:02 WG1885693
Acrolein ND 50.0 1 06/26/2022 22:02 WG1885693
Acrylonitrile ND 10.0 1 06/26/2022 22:02 WG1885693
Benzene ND 1.00 1 06/26/2022 22:02 WG1885693
Bromobenzene ND 1.00 1 06/26/2022 22:02 WG1885693
Bromodichloromethane ND 1.00 1 06/26/2022 22:02 WG1885693
Bromoform ND 1.00 1 06/26/2022 22:02 WG1885693
Bromomethane ND 5.00 1 06/26/2022 22:02 WG1885693
n-Butylbenzene ND 1.00 1 06/26/2022 22:02 WG1885693
sec-Butylbenzene ND 1.00 1 06/26/2022 22:02 WG1885693
tert-Butylbenzene ND 1.00 1 06/26/2022 22:02 WG1885693
Carbon tetrachloride ND 1.00 1 06/26/2022 22:02 WG1885693
Chlorobenzene ND 1.00 1 06/26/2022 22:02 WG1885693
Chlorodibromomethane ND 1.00 1 06/26/2022 22:02 WG1885693
Chloroethane ND 5.00 1 06/26/2022 22:02 WG1885693
Chloroform ND 5.00 1 06/26/2022 22:02 WG1885693
Chloromethane ND 2.50 1 06/26/2022 22:02 WG1885693
2-Chlorotoluene ND 1.00 1 06/26/2022 22:02 WG1885693
4-Chlorotoluene ND 1.00 1 06/26/2022 22:02 WG1885693
1,2-Dibromo-3-Chloropropane ND 5.00 1 06/26/2022 22:02 WG1885693
1,2-Dibromoethane ND 1.00 1 06/26/2022 22:02 WG1885693
Dibromomethane ND 1.00 1 06/26/2022 22:02 WG1885693
1,2-Dichlorobenzene ND 1.00 1 06/26/2022 22:02 WG1885693
1,3-Dichlorobenzene ND 1.00 1 06/26/2022 22:02 WG1885693
1,4-Dichlorobenzene ND 1.00 1 06/26/2022 22:02 WG1885693
Dichlorodifluoromethane ND 5.00 1 06/26/2022 22:02 WG1885693
1,1-Dichloroethane ND 1.00 1 06/26/2022 22:02 WG1885693
1,2-Dichloroethane ND 1.00 1 06/26/2022 22:02 WG1885693
1,1-Dichloroethene ND 1.00 1 06/26/2022 22:02 WG1885693
cis-1,2-Dichloroethene ND 1.00 1 06/26/2022 22:02 WG1885693
trans-1,2-Dichloroethene ND 1.00 1 06/26/2022 22:02 WG1885693
1,2-Dichloropropane ND 1.00 1 06/26/2022 22:02 WG1885693
1,1-Dichloropropene ND 1.00 1 06/26/2022 22:02 WG1885693
1,3-Dichloropropane ND 1.00 1 06/26/2022 22:02 WG1885693
2,2-Dichloropropane ND 1.00 1 06/26/2022 22:02 WG1885693
Di-isopropyl ether ND 1.00 1 06/26/2022 22:02 WG1885693
Ethylbenzene ND 1.00 1 06/26/2022 22:02 WG1885693
Hexachloro-1,3-butadiene ND 1.00 1 06/26/2022 22:02 WG1885693
Isopropylbenzene ND 1.00 1 06/26/2022 22:02 WG1885693
p-Isopropyltoluene ND 1.00 1 06/26/2022 22:02 WG1885693
2-Butanone (MEK)ND 10.0 1 06/26/2022 22:02 WG1885693
Methylene Chloride ND J4 5.00 1 06/26/2022 22:02 WG1885693
4-Methyl-2-pentanone (MIBK)ND 10.0 1 06/26/2022 22:02 WG1885693
Methyl tert-butyl ether ND 1.00 1 06/26/2022 22:02 WG1885693
Naphthalene ND 5.00 1 06/26/2022 22:02 WG1885693
n-Propylbenzene ND 1.00 1 06/26/2022 22:02 WG1885693
Styrene ND 1.00 1 06/26/2022 22:02 WG1885693
1,1,1,2-Tetrachloroethane ND 1.00 1 06/26/2022 22:02 WG1885693
1,1,2,2-Tetrachloroethane ND 1.00 1 06/26/2022 22:02 WG1885693
Tetrachloroethene ND 1.00 1 06/26/2022 22:02 WG1885693
Toluene ND 1.00 1 06/26/2022 22:02 WG1885693
1,2,3-Trichlorobenzene ND 1.00 1 06/26/2022 22:02 WG1885693
1,2,4-Trichlorobenzene ND 1.00 1 06/26/2022 22:02 WG1885693
1,1,1-Trichloroethane ND 1.00 1 06/26/2022 22:02 WG1885693
1,1,2-Trichloroethane ND 1.00 1 06/26/2022 22:02 WG1885693
Trichloroethene ND 1.00 1 06/26/2022 22:02 WG1885693
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
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ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
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SAMPLE RESULTS - 07
L1506699
MW-7
Collected date/time: 06/16/22 10:00
Volatile Organic Compounds (GC/MS) by Method 6200B-2011
Result Qualifier RDL Dilution Analysis Batch
Analyte ug/l ug/l date / time
Trichlorofluoromethane ND 5.00 1 06/26/2022 22:02 WG1885693
1,2,3-Trichloropropane ND 2.50 1 06/26/2022 22:02 WG1885693
1,2,4-Trimethylbenzene ND 1.00 1 06/26/2022 22:02 WG1885693
1,3,5-Trimethylbenzene ND 1.00 1 06/26/2022 22:02 WG1885693
Vinyl chloride ND 1.00 1 06/26/2022 22:02 WG1885693
o-Xylene ND 1.00 1 06/26/2022 22:02 WG1885693
m&p-Xylenes ND 2.00 1 06/26/2022 22:02 WG1885693
(S) Toluene-d8 104 80.0-120 06/26/2022 22:02 WG1885693
(S) 4-Bromofluorobenzene 99.6 77.0-126 06/26/2022 22:02 WG1885693
(S) 1,2-Dichloroethane-d4 108 70.0-130 06/26/2022 22:02 WG1885693
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
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ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
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SAMPLE RESULTS - 08
L1506699
MW-8
Collected date/time: 06/16/22 09:45
Volatile Organic Compounds (GC/MS) by Method 6200B-2011
Result Qualifier RDL Dilution Analysis Batch
Analyte ug/l ug/l date / time
Acetone ND 50.0 1 06/26/2022 22:24 WG1885693
Acrolein ND 50.0 1 06/26/2022 22:24 WG1885693
Acrylonitrile ND 10.0 1 06/26/2022 22:24 WG1885693
Benzene ND 1.00 1 06/26/2022 22:24 WG1885693
Bromobenzene ND 1.00 1 06/26/2022 22:24 WG1885693
Bromodichloromethane ND 1.00 1 06/26/2022 22:24 WG1885693
Bromoform ND 1.00 1 06/26/2022 22:24 WG1885693
Bromomethane ND 5.00 1 06/26/2022 22:24 WG1885693
n-Butylbenzene ND 1.00 1 06/26/2022 22:24 WG1885693
sec-Butylbenzene ND 1.00 1 06/26/2022 22:24 WG1885693
tert-Butylbenzene ND 1.00 1 06/26/2022 22:24 WG1885693
Carbon tetrachloride ND 1.00 1 06/26/2022 22:24 WG1885693
Chlorobenzene ND 1.00 1 06/26/2022 22:24 WG1885693
Chlorodibromomethane ND 1.00 1 06/26/2022 22:24 WG1885693
Chloroethane ND 5.00 1 06/26/2022 22:24 WG1885693
Chloroform ND 5.00 1 06/26/2022 22:24 WG1885693
Chloromethane ND 2.50 1 06/26/2022 22:24 WG1885693
2-Chlorotoluene ND 1.00 1 06/26/2022 22:24 WG1885693
4-Chlorotoluene ND 1.00 1 06/26/2022 22:24 WG1885693
1,2-Dibromo-3-Chloropropane ND 5.00 1 06/26/2022 22:24 WG1885693
1,2-Dibromoethane ND 1.00 1 06/26/2022 22:24 WG1885693
Dibromomethane ND 1.00 1 06/26/2022 22:24 WG1885693
1,2-Dichlorobenzene ND 1.00 1 06/26/2022 22:24 WG1885693
1,3-Dichlorobenzene ND 1.00 1 06/26/2022 22:24 WG1885693
1,4-Dichlorobenzene ND 1.00 1 06/26/2022 22:24 WG1885693
Dichlorodifluoromethane ND 5.00 1 06/26/2022 22:24 WG1885693
1,1-Dichloroethane ND 1.00 1 06/26/2022 22:24 WG1885693
1,2-Dichloroethane ND 1.00 1 06/26/2022 22:24 WG1885693
1,1-Dichloroethene ND 1.00 1 06/26/2022 22:24 WG1885693
cis-1,2-Dichloroethene ND 1.00 1 06/26/2022 22:24 WG1885693
trans-1,2-Dichloroethene ND 1.00 1 06/26/2022 22:24 WG1885693
1,2-Dichloropropane ND 1.00 1 06/26/2022 22:24 WG1885693
1,1-Dichloropropene ND 1.00 1 06/26/2022 22:24 WG1885693
1,3-Dichloropropane ND 1.00 1 06/26/2022 22:24 WG1885693
2,2-Dichloropropane ND 1.00 1 06/26/2022 22:24 WG1885693
Di-isopropyl ether ND 1.00 1 06/26/2022 22:24 WG1885693
Ethylbenzene ND 1.00 1 06/26/2022 22:24 WG1885693
Hexachloro-1,3-butadiene ND 1.00 1 06/26/2022 22:24 WG1885693
Isopropylbenzene ND 1.00 1 06/26/2022 22:24 WG1885693
p-Isopropyltoluene ND 1.00 1 06/26/2022 22:24 WG1885693
2-Butanone (MEK)ND 10.0 1 06/26/2022 22:24 WG1885693
Methylene Chloride ND J4 5.00 1 06/26/2022 22:24 WG1885693
4-Methyl-2-pentanone (MIBK)ND 10.0 1 06/26/2022 22:24 WG1885693
Methyl tert-butyl ether ND 1.00 1 06/26/2022 22:24 WG1885693
Naphthalene ND 5.00 1 06/26/2022 22:24 WG1885693
n-Propylbenzene ND 1.00 1 06/26/2022 22:24 WG1885693
Styrene ND 1.00 1 06/26/2022 22:24 WG1885693
1,1,1,2-Tetrachloroethane ND 1.00 1 06/26/2022 22:24 WG1885693
1,1,2,2-Tetrachloroethane ND 1.00 1 06/26/2022 22:24 WG1885693
Tetrachloroethene ND 1.00 1 06/26/2022 22:24 WG1885693
Toluene ND 1.00 1 06/26/2022 22:24 WG1885693
1,2,3-Trichlorobenzene ND 1.00 1 06/26/2022 22:24 WG1885693
1,2,4-Trichlorobenzene ND 1.00 1 06/26/2022 22:24 WG1885693
1,1,1-Trichloroethane ND 1.00 1 06/26/2022 22:24 WG1885693
1,1,2-Trichloroethane ND 1.00 1 06/26/2022 22:24 WG1885693
Trichloroethene ND 1.00 1 06/26/2022 22:24 WG1885693
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
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ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Terracon - Greensboro, NC 75207118 L1506699 06/28/22 12:28 19 of 27
SAMPLE RESULTS - 08
L1506699
MW-8
Collected date/time: 06/16/22 09:45
Volatile Organic Compounds (GC/MS) by Method 6200B-2011
Result Qualifier RDL Dilution Analysis Batch
Analyte ug/l ug/l date / time
Trichlorofluoromethane ND 5.00 1 06/26/2022 22:24 WG1885693
1,2,3-Trichloropropane ND 2.50 1 06/26/2022 22:24 WG1885693
1,2,4-Trimethylbenzene ND 1.00 1 06/26/2022 22:24 WG1885693
1,3,5-Trimethylbenzene ND 1.00 1 06/26/2022 22:24 WG1885693
Vinyl chloride ND 1.00 1 06/26/2022 22:24 WG1885693
o-Xylene ND 1.00 1 06/26/2022 22:24 WG1885693
m&p-Xylenes ND 2.00 1 06/26/2022 22:24 WG1885693
(S) Toluene-d8 102 80.0-120 06/26/2022 22:24 WG1885693
(S) 4-Bromofluorobenzene 97.1 77.0-126 06/26/2022 22:24 WG1885693
(S) 1,2-Dichloroethane-d4 108 70.0-130 06/26/2022 22:24 WG1885693
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
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ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
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QUALITY CONTROL SUMMARYWG1885693
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 L1506699-01,02,03,04,05,06,07,08
Method Blank (MB)
(MB) R3807990-4 06/26/22 16:53
MB Result MB Qualifier MB MDL MB RDL
Analyte ug/l ug/l ug/l
Acetone U 11.3 50.0
Acrolein U 2.54 50.0
Acrylonitrile U 0.671 10.0
Benzene U 0.0941 1.00
Bromobenzene U 0.118 1.00
Bromodichloromethane U 0.136 1.00
Bromoform U 0.129 1.00
Bromomethane U 0.605 5.00
n-Butylbenzene U 0.157 1.00
sec-Butylbenzene U 0.125 1.00
tert-Butylbenzene U 0.127 1.00
Carbon tetrachloride U 0.128 1.00
Chlorobenzene U 0.116 1.00
Chlorodibromomethane U 0.140 1.00
Chloroethane U 0.192 5.00
Chloroform U 0.111 5.00
Chloromethane U 0.960 2.50
2-Chlorotoluene U 0.106 1.00
4-Chlorotoluene U 0.114 1.00
1,2-Dibromo-3-Chloropropane U 0.276 5.00
1,2-Dibromoethane U 0.126 1.00
Dibromomethane U 0.122 1.00
1,2-Dichlorobenzene U 0.107 1.00
1,3-Dichlorobenzene U 0.110 1.00
1,4-Dichlorobenzene U 0.120 1.00
Dichlorodifluoromethane U 0.374 5.00
1,1-Dichloroethane U 0.100 1.00
1,2-Dichloroethane U 0.0819 1.00
1,1-Dichloroethene U 0.188 1.00
cis-1,2-Dichloroethene U 0.126 1.00
trans-1,2-Dichloroethene U 0.149 1.00
1,2-Dichloropropane U 0.149 1.00
1,1-Dichloropropene U 0.142 1.00
1,3-Dichloropropane U 0.110 1.00
2,2-Dichloropropane U 0.161 1.00
Di-isopropyl ether U 0.105 1.00
Ethylbenzene U 0.137 1.00
Hexachloro-1,3-butadiene U 0.337 1.00
Isopropylbenzene U 0.105 1.00
p-Isopropyltoluene U 0.120 1.00
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
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ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
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QUALITY CONTROL SUMMARYWG1885693
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 L1506699-01,02,03,04,05,06,07,08
Method Blank (MB)
(MB) R3807990-4 06/26/22 16:53
MB Result MB Qualifier MB MDL MB RDL
Analyte ug/l ug/l ug/l
2-Butanone (MEK)U 1.19 10.0
Methylene Chloride U 0.430 5.00
4-Methyl-2-pentanone (MIBK)U 0.478 10.0
Methyl tert-butyl ether U 0.101 1.00
Naphthalene U 1.00 5.00
n-Propylbenzene U 0.0993 1.00
Styrene U 0.118 1.00
1,1,1,2-Tetrachloroethane U 0.147 1.00
1,1,2,2-Tetrachloroethane U 0.133 1.00
Tetrachloroethene U 0.300 1.00
Toluene U 0.278 1.00
1,2,3-Trichlorobenzene U 0.230 1.00
1,2,4-Trichlorobenzene U 0.481 1.00
1,1,1-Trichloroethane U 0.149 1.00
1,1,2-Trichloroethane U 0.158 1.00
Trichloroethene U 0.190 1.00
Trichlorofluoromethane U 0.160 5.00
1,2,3-Trichloropropane U 0.237 2.50
1,2,4-Trimethylbenzene U 0.322 1.00
1,3,5-Trimethylbenzene U 0.104 1.00
Vinyl chloride U 0.234 1.00
o-Xylene U 0.174 1.00
m&p-Xylenes U 0.430 2.00
(S) Toluene-d8 99.2 80.0-120
(S) 4-Bromofluorobenzene 99.7 77.0-126
(S) 1,2-Dichloroethane-d4 109 70.0-130
Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD)
(LCS) R3807990-1 06/26/22 15:03 • (LCSD) R3807990-2 06/26/22 15:25
Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits
Analyte ug/l ug/l ug/l %%%%%
Acetone 25.0 28.9 30.0 116 120 19.0-160 3.74 27
Acrolein 25.0 23.8 26.4 95.2 106 10.0-160 10.4 26
Acrylonitrile 25.0 24.4 29.1 97.6 116 55.0-149 17.6 20
Benzene 5.00 5.58 5.82 112 116 70.0-123 4.21 20
Bromobenzene 5.00 4.91 5.20 98.2 104 73.0-121 5.74 20
Bromodichloromethane 5.00 5.18 5.47 104 109 75.0-120 5.45 20
Bromoform 5.00 3.88 4.29 77.6 85.8 68.0-132 10.0 20
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
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ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
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QUALITY CONTROL SUMMARYWG1885693
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 L1506699-01,02,03,04,05,06,07,08
Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD)
(LCS) R3807990-1 06/26/22 15:03 • (LCSD) R3807990-2 06/26/22 15:25
Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits
Analyte ug/l ug/l ug/l %%%%%
Bromomethane 5.00 4.51 4.18 90.2 83.6 10.0-160 7.59 25
n-Butylbenzene 5.00 5.39 5.52 108 110 73.0-125 2.38 20
sec-Butylbenzene 5.00 5.57 5.82 111 116 75.0-125 4.39 20
tert-Butylbenzene 5.00 5.34 5.47 107 109 76.0-124 2.41 20
Carbon tetrachloride 5.00 5.41 5.48 108 110 68.0-126 1.29 20
Chlorobenzene 5.00 4.97 5.35 99.4 107 80.0-121 7.36 20
Chlorodibromomethane 5.00 4.36 4.51 87.2 90.2 77.0-125 3.38 20
Chloroethane 5.00 5.54 5.77 111 115 47.0-150 4.07 20
Chloroform 5.00 5.47 5.90 109 118 73.0-120 7.56 20
Chloromethane 5.00 3.65 3.61 73.0 72.2 41.0-142 1.10 20
2-Chlorotoluene 5.00 5.39 5.67 108 113 76.0-123 5.06 20
4-Chlorotoluene 5.00 4.99 5.11 99.8 102 75.0-122 2.38 20
1,2-Dibromo-3-Chloropropane 5.00 3.57 4.15 71.4 83.0 58.0-134 15.0 20
1,2-Dibromoethane 5.00 4.69 4.95 93.8 99.0 80.0-122 5.39 20
Dibromomethane 5.00 5.45 5.51 109 110 80.0-120 1.09 20
1,2-Dichlorobenzene 5.00 4.82 5.08 96.4 102 79.0-121 5.25 20
1,3-Dichlorobenzene 5.00 4.94 5.05 98.8 101 79.0-120 2.20 20
1,4-Dichlorobenzene 5.00 4.85 5.34 97.0 107 79.0-120 9.62 20
Dichlorodifluoromethane 5.00 4.83 4.75 96.6 95.0 51.0-149 1.67 20
1,1-Dichloroethane 5.00 5.52 5.71 110 114 70.0-126 3.38 20
1,2-Dichloroethane 5.00 5.46 5.71 109 114 70.0-128 4.48 20
1,1-Dichloroethene 5.00 5.46 5.46 109 109 71.0-124 0.000 20
cis-1,2-Dichloroethene 5.00 5.75 5.81 115 116 73.0-120 1.04 20
trans-1,2-Dichloroethene 5.00 5.51 5.56 110 111 73.0-120 0.903 20
1,2-Dichloropropane 5.00 5.69 5.89 114 118 77.0-125 3.45 20
1,1-Dichloropropene 5.00 5.73 5.86 115 117 74.0-126 2.24 20
1,3-Dichloropropane 5.00 4.83 5.17 96.6 103 80.0-120 6.80 20
2,2-Dichloropropane 5.00 5.56 5.60 111 112 58.0-130 0.717 20
Di-isopropyl ether 5.00 5.41 5.64 108 113 58.0-138 4.16 20
Ethylbenzene 5.00 5.35 5.32 107 106 79.0-123 0.562 20
Hexachloro-1,3-butadiene 5.00 5.42 5.32 108 106 54.0-138 1.86 20
Isopropylbenzene 5.00 5.41 5.60 108 112 76.0-127 3.45 20
p-Isopropyltoluene 5.00 5.31 5.53 106 111 76.0-125 4.06 20
2-Butanone (MEK)25.0 25.1 27.8 100 111 44.0-160 10.2 20
Methylene Chloride 5.00 5.62 6.04 112 121 67.0-120 J4 7.20 20
4-Methyl-2-pentanone (MIBK)25.0 25.1 27.5 100 110 68.0-142 9.13 20
Methyl tert-butyl ether 5.00 5.08 5.50 102 110 68.0-125 7.94 20
Naphthalene 5.00 4.15 4.52 83.0 90.4 54.0-135 8.54 20
n-Propylbenzene 5.00 5.57 5.65 111 113 77.0-124 1.43 20
Styrene 5.00 4.69 4.78 93.8 95.6 73.0-130 1.90 20
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
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ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Terracon - Greensboro, NC 75207118 L1506699 06/28/22 12:28 23 of 27
QUALITY CONTROL SUMMARYWG1885693
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 L1506699-01,02,03,04,05,06,07,08
Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD)
(LCS) R3807990-1 06/26/22 15:03 • (LCSD) R3807990-2 06/26/22 15:25
Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits
Analyte ug/l ug/l ug/l %%%%%
1,1,1,2-Tetrachloroethane 5.00 4.80 4.87 96.0 97.4 75.0-125 1.45 20
1,1,2,2-Tetrachloroethane 5.00 5.02 5.37 100 107 65.0-130 6.74 20
Tetrachloroethene 5.00 5.35 5.54 107 111 72.0-132 3.49 20
Toluene 5.00 5.04 5.30 101 106 79.0-120 5.03 20
1,2,3-Trichlorobenzene 5.00 4.68 5.02 93.6 100 50.0-138 7.01 20
1,2,4-Trichlorobenzene 5.00 4.58 4.89 91.6 97.8 57.0-137 6.55 20
1,1,1-Trichloroethane 5.00 5.69 5.71 114 114 73.0-124 0.351 20
1,1,2-Trichloroethane 5.00 4.76 5.07 95.2 101 80.0-120 6.31 20
Trichloroethene 5.00 5.41 5.69 108 114 78.0-124 5.05 20
Trichlorofluoromethane 5.00 6.02 5.94 120 119 59.0-147 1.34 20
1,2,3-Trichloropropane 5.00 5.00 5.27 100 105 73.0-130 5.26 20
1,2,4-Trimethylbenzene 5.00 5.11 5.22 102 104 76.0-121 2.13 20
1,3,5-Trimethylbenzene 5.00 5.33 5.48 107 110 76.0-122 2.78 20
Vinyl chloride 5.00 5.32 5.29 106 106 67.0-131 0.566 20
o-Xylene 5.00 4.86 5.30 97.2 106 80.0-122 8.66 20
m&p-Xylenes 10.0 10.2 11.0 102 110 80.0-122 7.55 20
(S) Toluene-d8 98.5 99.5 80.0-120
(S) 4-Bromofluorobenzene 99.1 98.5 77.0-126
(S) 1,2-Dichloroethane-d4 106 107 70.0-130
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
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ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
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GLOSSARY OF TERMS
Guide to Reading and Understanding Your Laboratory Report
The information below is designed to better explain the various terms used in your report of analytical results from the Laboratory. This is not
intended as a comprehensive explanation, and if you have additional questions please contact your project representative.
Results Disclaimer - Information that may be provided by the customer, and contained within this report, include Permit Limits, Project Name,
Sample ID, Sample Matrix, Sample Preservation, Field Blanks, Field Spikes, Field Duplicates, On-Site Data, Sampling Collection Dates/Times, and
Sampling Location. Results relate to the accuracy of this information provided, and as the samples are received.
Abbreviations and Definitions
MDL Method Detection Limit.
ND Not detected at the Reporting Limit (or MDL where applicable).
RDL Reported Detection Limit.
Rec.Recovery.
RPD Relative Percent Difference.
SDG Sample Delivery Group.
(S)
Surrogate (Surrogate Standard) - Analytes added to every blank, sample, Laboratory Control Sample/Duplicate and
Matrix Spike/Duplicate; used to evaluate analytical efficiency by measuring recovery. Surrogates are not expected to be
detected in all environmental media.
U Not detected at the Reporting Limit (or MDL where applicable).
Analyte The name of the particular compound or analysis performed. Some Analyses and Methods will have multiple analytes
reported.
Dilution
If the sample matrix contains an interfering material, the sample preparation volume or weight values differ from the
standard, or if concentrations of analytes in the sample are higher than the highest limit of concentration that the
laboratory can accurately report, the sample may be diluted for analysis. If a value different than 1 is used in this field, the
result reported has already been corrected for this factor.
Limits
These are the target % recovery ranges or % difference value that the laboratory has historically determined as normal
for the method and analyte being reported. Successful QC Sample analysis will target all analytes recovered or
duplicated within these ranges.
Qualifier
This column provides a letter and/or number designation that corresponds to additional information concerning the result
reported. If a Qualifier is present, a definition per Qualifier is provided within the Glossary and Definitions page and
potentially a discussion of possible implications of the Qualifier in the Case Narrative if applicable.
Result
The actual analytical final result (corrected for any sample specific characteristics) reported for your sample. If there was
no measurable result returned for a specific analyte, the result in this column may state “ND” (Not Detected) or “BDL”
(Below Detectable Levels). The information in the results column should always be accompanied by either an MDL
(Method Detection Limit) or RDL (Reporting Detection Limit) that defines the lowest value that the laboratory could detect
or report for this analyte.
Uncertainty
(Radiochemistry)Confidence level of 2 sigma.
Case Narrative (Cn)
A brief discussion about the included sample results, including a discussion of any non-conformances to protocol
observed either at sample receipt by the laboratory from the field or during the analytical process. If present, there will
be a section in the Case Narrative to discuss the meaning of any data qualifiers used in the report.
Quality Control
Summary (Qc)
This section of the report includes the results of the laboratory quality control analyses required by procedure or
analytical methods to assist in evaluating the validity of the results reported for your samples. These analyses are not
being performed on your samples typically, but on laboratory generated material.
Sample Chain of
Custody (Sc)
This is the document created in the field when your samples were initially collected. This is used to verify the time and
date of collection, the person collecting the samples, and the analyses that the laboratory is requested to perform. This
chain of custody also documents all persons (excluding commercial shippers) that have had control or possession of the
samples from the time of collection until delivery to the laboratory for analysis.
Sample Results (Sr)
This section of your report will provide the results of all testing performed on your samples. These results are provided
by sample ID and are separated by the analyses performed on each sample. The header line of each analysis section for
each sample will provide the name and method number for the analysis reported.
Sample Summary (Ss)This section of the Analytical Report defines the specific analyses performed for each sample ID, including the dates and
times of preparation and/or analysis.
Qualifier Description
J4 The associated batch QC was outside the established quality control range for accuracy.
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
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ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
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Pace Analytical National 12065 Lebanon Rd Mount Juliet, TN 37122
Alabama 40660 Nebraska NE-OS-15-05
Alaska 17-026 Nevada TN000032021-1
Arizona AZ0612 New Hampshire 2975
Arkansas 88-0469 New Jersey–NELAP TN002
California 2932 New Mexico ¹TN00003
Colorado TN00003 New York 11742
Connecticut PH-0197 North Carolina Env375
Florida E87487 North Carolina ¹DW21704
Georgia NELAP North Carolina ³41
Georgia ¹923 North Dakota R-140
Idaho TN00003 Ohio–VAP CL0069
Illinois 200008 Oklahoma 9915
Indiana C-TN-01 Oregon TN200002
Iowa 364 Pennsylvania 68-02979
Kansas E-10277 Rhode Island LAO00356
Kentucky ¹ ⁶KY90010 South Carolina 84004002
Kentucky ²16 South Dakota n/a
Louisiana AI30792 Tennessee ¹ ⁴2006
Louisiana LA018 Texas T104704245-20-18
Maine TN00003 Texas ⁵LAB0152
Maryland 324 Utah TN000032021-11
Massachusetts M-TN003 Vermont VT2006
Michigan 9958 Virginia 110033
Minnesota 047-999-395 Washington C847
Mississippi TN00003 West Virginia 233
Missouri 340 Wisconsin 998093910
Montana CERT0086 Wyoming A2LA
A2LA – ISO 17025 1461.01 AIHA-LAP,LLC EMLAP 100789
A2LA – ISO 17025 ⁵1461.02 DOD 1461.01
Canada 1461.01 USDA P330-15-00234
EPA–Crypto TN00003
ACCREDITATIONS & LOCATIONS

¹ Drinking Water ² Underground Storage Tanks ³ Aquatic Toxicity ⁴ Chemical/Microbiological ⁵ Mold ⁶ Wastewater n/a Accreditation not applicable
* Not all certifications held by the laboratory are applicable to the results reported in the attached report.
* Accreditation is only applicable to the test methods specified on each scope of accreditation held by Pace Analytical.
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
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ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
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APPENDIX C
AQTESOLV RESULTS
AQTESOLV for Windows
Data Set: \\P75WFS01\Data\Projects\2020\75207118\Working Files\Diagrams-Drawings-Figures\Model\AQTESOLV\MW2 Slug In.aqt
Date: 07/18/22
Time: 10:00:15
PROJECT INFORMATION
Company: Terracon
Client: NCDEQ
Project: 75159687B
Location: Mocksville, NC
Test Date: 3/7/22
Test Well: MW-3
AQUIFER DATA
Saturated Thickness: 20.9 ft
Anisotropy Ratio (Kz/Kr): 1.
SLUG TEST WELL DATA
Test Well:MW2 Slug In
X Location: 0. ft
Y Location: 0. ft
Initial Displacement: 0.0637 ft
Static Water Column Height: 10.9 ft
Casing Radius: 0.166 ft
Well Radius: 0.166 ft
Well Skin Radius: 0.166 ft
Screen Length: 10.9 ft
Total Well Penetration Depth: 10.9 ft
Corrected Casing Radius (Bouwer-Rice Method): 0.166 ft
Gravel Pack Porosity: 0.
No. of Observations: 62
Observation Data
Time (sec)Displacement (ft)Time (sec)Displacement (ft)
160.0.0637 780.0.0001
180.0.0141 800.-0.001
200.0.0092 820.-0.0009
220.0.009 840.-0.0024
240.0.0026 860.-0.0005
260.0.0038 880.-0.0026
280.0.0033 900.-0.0013
300.0.0014 920.-0.0012
320.0.0029 940.-0.0014
340.0.0026 960.-0.0023
360.0.0026 980.-0.0012
380.0.003 1000.-0.0018
400.0.0019 1020.-0.0011
420.-0.0001 1040.-0.0015
440.0.0019 1060.-0.0019
07/18/22 1 10:00:15
AQTESOLV for Windows
Time (sec)Displacement (ft)Time (sec)Displacement (ft)
460.0.0019 1080.-0.007
480.0.0018 1100.-0.0008
500.-0.0011 1120.-0.0019
520.0.0009 1140.-0.0025
540.-0.0008 1160.-0.0024
560.0.0005 1180.-0.0009
580.-0.0001 1200.-0.0007
600.0.0008 1220.-0.0024
620.-0.0009 1240.-0.0025
640.0.0002 1260.-0.0023
660.0.0007 1280.-0.0048
680.-0.0003 1300.-0.0017
700.-0.0003 1320.-0.0037
720.-0.0005 1340.-0.0031
740.-0.0012 1360.-0.005
760.-0.0005 1380.-0.0024
SOLUTION
Slug Test
Aquifer Model: Unconfined
Solution Method: Bouwer-Rice
ln(Re/rw): 2.841
VISUAL ESTIMATION RESULTS
Estimated Parameters
Parameter Estimate
K 0.0007211 ft/min
y0 0.00845 ft
K = 0.0003663 cm/sec
T = K*b = 0.01507 ft²/min (0.2334 sq. cm/sec)
07/18/22 2 10:00:15
0. 400. 800. 1.2E+3 1.6E+3 2.0E+3
0.001
0.01
0.1
1.
Time (sec)Normalized Head (ft/ft)WELL TEST ANALYSIS
Data Set: \...\MW2 Slug In.aqt
Date: 07/18/22 Time: 09:59:58
PROJECT INFORMATION
Company: Terracon
Client: NCDEQ
Project: 75159687B
Location: Mocksville, NC
Test Well: MW-3
Test Date: 3/7/22
AQUIFER DATA
Saturated Thickness: 20.9 ft Anisotropy Ratio (Kz/Kr): 1.
WELL DATA (MW2 Slug In)
Initial Displacement: 0.0637 ft Static Water Column Height: 10.9 ft
Total Well Penetration Depth: 10.9 ft Screen Length: 10.9 ft
Casing Radius: 0.166 ft Well Radius: 0.166 ft
Gravel Pack Porosity: 0.
SOLUTION
Aquifer Model: Unconfined Solution Method: Bouwer-Rice
K = 0.0007211 ft/min y0 = 0.00845 ft
AQTESOLV for Windows
Data Set: \\P75WFS01\Data\Projects\2020\75207118\Working Files\Diagrams-Drawings-Figures\Model\AQTESOLV\MW2 Slug Out.aqt
Date: 07/18/22
Time: 10:01:14
PROJECT INFORMATION
Company: Terracon
Client: NCDEQ
Project: 75159687B
Location: Mocksville, NC
Test Date: 3/7/22
Test Well: MW-3
AQUIFER DATA
Saturated Thickness: 20.9 ft
Anisotropy Ratio (Kz/Kr): 1.
SLUG TEST WELL DATA
Test Well:MW2 Slug Out
X Location: 0. ft
Y Location: 0. ft
Initial Displacement: 0.1211 ft
Static Water Column Height: 10.9 ft
Casing Radius: 0.166 ft
Well Radius: 0.166 ft
Well Skin Radius: 0.166 ft
Screen Length: 10.9 ft
Total Well Penetration Depth: 10.9 ft
Corrected Casing Radius (Bouwer-Rice Method): 0.166 ft
Gravel Pack Porosity: 0.
No. of Observations: 60
Observation Data
Time (sec)Displacement (ft)Time (sec)Displacement (ft)
20.0.0016 620.0.0088
40.0.1211 640.0.0076
60.0.0297 660.0.0098
80.0.0166 680.0.0082
100.0.0101 700.0.0067
120.0.0083 720.0.0097
140.0.0074 740.0.0081
160.0.0065 760.0.0091
180.0.0074 780.0.0095
200.0.0068 800.0.0105
220.0.0075 820.0.0098
240.0.0076 840.0.0114
260.0.006 860.0.0095
280.0.0063 880.0.0092
300.0.0052 900.0.0111
07/18/22 1 10:01:14
AQTESOLV for Windows
Time (sec)Displacement (ft)Time (sec)Displacement (ft)
320.0.0078 920.0.0095
340.0.0052 940.0.0106
360.0.0044 960.0.0102
380.0.0059 980.0.011
400.0.0052 1000.0.0107
420.0.0057 1020.0.0114
440.0.0054 1040.0.0122
460.0.0057 1060.0.0123
480.0.0062 1080.0.0118
500.0.0068 1100.0.0102
520.0.007 1120.0.0121
540.0.0064 1140.0.0129
560.0.0057 1160.0.0095
580.0.008 1180.0.0118
600.0.0065 1200.0.0116
SOLUTION
Slug Test
Aquifer Model: Unconfined
Solution Method: Bouwer-Rice
ln(Re/rw): 2.841
VISUAL ESTIMATION RESULTS
Estimated Parameters
Parameter Estimate
K 0.0006576 ft/min
y0 0.01339 ft
K = 0.0003341 cm/sec
T = K*b = 0.01374 ft²/min (0.2128 sq. cm/sec)
07/18/22 2 10:01:14
0.400.800.1.2E+3 1.6E+3 2.0E+3
0.001
0.01
0.1
1.
Time (sec)Normalized Head (ft/ft)WELL TEST ANALYSIS
Data Set:\...\MW2 Slug Out.aqt
Date:07/18/22 Time:10:00:51
PROJECT INFORMATION
Company:Terracon
Client:NCDEQ
Project:75159687B
Location:Mocksville, NC
Test Well:MW-3
Test Date:3/7/22
AQUIFER DATA
Saturated Thickness:20.9 ft Anisotropy Ratio (Kz/Kr):1.
WELL DATA (MW2 Slug Out)
Initial Displacement:0.1211 ft Static Water Column Height:10.9 ft
Total Well Penetration Depth:10.9 ft Screen Length:10.9 ft
Casing Radius:0.166 ft Well Radius:0.166 ft
Gravel Pack Porosity:0.
SOLUTION
Aquifer Model:Unconfined Solution Method:Bouwer-Rice
K =0.0006576 ft/min y0 =0.01339 ft
AQTESOLV for Windows
Data Set: \\P75WFS01\Data\Projects\2020\75207118\Working Files\Diagrams-Drawings-Figures\Model\AQTESOLV\MW3 Slug In.aqt
Date: 07/18/22
Time: 10:01:51
PROJECT INFORMATION
Company: Terracon
Client: NCDEQ
Project: 75159687B
Location: Mocksville, NC
Test Date: 3/7/22
Test Well: MW-3
AQUIFER DATA
Saturated Thickness: 21.76 ft
Anisotropy Ratio (Kz/Kr): 1.
SLUG TEST WELL DATA
Test Well:MW3 Slug In
X Location: 0. ft
Y Location: 0. ft
Initial Displacement: 0.1491 ft
Static Water Column Height: 11.76 ft
Casing Radius: 0.166 ft
Well Radius: 0.166 ft
Well Skin Radius: 0.166 ft
Screen Length: 11.76 ft
Total Well Penetration Depth: 11.76 ft
Corrected Casing Radius (Bouwer-Rice Method): 0.166 ft
Gravel Pack Porosity: 0.
No. of Observations: 60
Observation Data
Time (sec)Displacement (ft)Time (sec)Displacement (ft)
20.0.1491 620.0.0033
40.0.1296 640.0.004
60.0.1123 660.0.0024
80.0.1009 680.0.0013
100.0.0886 700.0.0021
120.0.0786 720.0.0003
140.0.0723 740.0.0022
160.0.063 760.0.
180.0.0565 780.0.0025
200.0.0502 800.0.0007
220.0.0444 820.0.0011
240.0.0424 840.0.0041
260.0.0388 860.0.0031
280.0.0348 880.0.0049
300.0.03 900.0.0006
07/18/22 1 10:01:51
AQTESOLV for Windows
Time (sec)Displacement (ft)Time (sec)Displacement (ft)
320.0.0292 920.0.0043
340.0.025 940.0.0032
360.0.0239 960.0.0026
380.0.0221 980.0.0016
400.0.0178 1000.0.0029
420.0.0165 1020.0.0024
440.0.0133 1040.0.0048
460.0.0121 1060.0.0044
480.0.0122 1080.0.0039
500.0.0091 1100.0.0017
520.0.0085 1120.0.0032
540.0.0078 1140.0.0041
560.0.0073 1160.0.0036
580.0.0067 1180.0.0054
600.0.0049 1200.0.0047
SOLUTION
Slug Test
Aquifer Model: Unconfined
Solution Method: Bouwer-Rice
ln(Re/rw): 2.905
VISUAL ESTIMATION RESULTS
Estimated Parameters
Parameter Estimate
K 0.0007551 ft/min
y0 0.03522 ft
K = 0.0003836 cm/sec
T = K*b = 0.01643 ft²/min (0.2544 sq. cm/sec)
07/18/22 2 10:01:51
0.400.800.1.2E+3 1.6E+3 2.0E+3
0.001
0.01
0.1
1.
Time (sec)Normalized Head (ft/ft)WELL TEST ANALYSIS
Data Set:\...\MW3 Slug In.aqt
Date:07/18/22 Time:10:01:37
PROJECT INFORMATION
Company:Terracon
Client:NCDEQ
Project:75159687B
Location:Mocksville, NC
Test Well:MW-3
Test Date:3/7/22
AQUIFER DATA
Saturated Thickness:21.76 ft Anisotropy Ratio (Kz/Kr):1.
WELL DATA (MW3 Slug In)
Initial Displacement:0.1491 ft Static Water Column Height:11.76 ft
Total Well Penetration Depth:11.76 ft Screen Length:11.76 ft
Casing Radius:0.166 ft Well Radius:0.166 ft
Gravel Pack Porosity:0.
SOLUTION
Aquifer Model:Unconfined Solution Method:Bouwer-Rice
K =0.0007551 ft/min y0 =0.03522 ft
AQTESOLV for Windows
Data Set: \\P75WFS01\Data\Projects\2020\75207118\Working Files\Diagrams-Drawings-Figures\Model\AQTESOLV\MW3 Slug Out.aqt
Date: 07/18/22
Time: 10:02:27
PROJECT INFORMATION
Company: Terracon
Client: NCDEQ
Project: 75159687B
Location: Mocksville, NC
Test Date: 3/7/22
Test Well: MW-3
AQUIFER DATA
Saturated Thickness: 21.76 ft
Anisotropy Ratio (Kz/Kr): 1.
SLUG TEST WELL DATA
Test Well:MW3 Slug In
X Location: 0. ft
Y Location: 0. ft
Initial Displacement: 0.1728 ft
Static Water Column Height: 11.76 ft
Casing Radius: 0.166 ft
Well Radius: 0.166 ft
Well Skin Radius: 0.166 ft
Screen Length: 11.76 ft
Total Well Penetration Depth: 11.76 ft
Corrected Casing Radius (Bouwer-Rice Method): 0.166 ft
Gravel Pack Porosity: 0.
No. of Observations: 60
Observation Data
Time (sec)Displacement (ft)Time (sec)Displacement (ft)
20.0.1728 620.0.0162
40.0.0861 640.0.0181
60.0.0738 660.0.015
80.0.0677 680.0.0133
100.0.0597 700.0.0124
120.0.0604 720.0.012
140.0.0581 740.0.0131
160.0.0587 760.0.012
180.0.0563 780.0.0117
200.0.0541 800.0.0133
220.0.0522 820.0.014
240.0.0483 840.0.0117
260.0.0441 860.0.0129
280.0.0424 880.0.011
300.0.0411 900.0.0107
07/18/22 1 10:02:27
AQTESOLV for Windows
Time (sec)Displacement (ft)Time (sec)Displacement (ft)
320.0.0381 920.0.0116
340.0.0334 940.0.0118
360.0.0339 960.0.0108
380.0.031 980.0.0094
400.0.031 1000.0.0113
420.0.0279 1020.0.0115
440.0.0266 1040.0.0101
460.0.0257 1060.0.0095
480.0.0228 1080.0.0085
500.0.0233 1100.0.0094
520.0.0206 1120.0.0075
540.0.0198 1140.0.0101
560.0.0185 1160.0.0101
580.0.0183 1180.0.0106
600.0.0157 1200.0.0113
SOLUTION
Slug Test
Aquifer Model: Unconfined
Solution Method: Bouwer-Rice
ln(Re/rw): 2.905
VISUAL ESTIMATION RESULTS
Estimated Parameters
Parameter Estimate
K 0.0005998 ft/min
y0 0.09702 ft
K = 0.0003047 cm/sec
T = K*b = 0.01305 ft²/min (0.2021 sq. cm/sec)
07/18/22 2 10:02:27
0.400.800.1.2E+3 1.6E+3 2.0E+3
0.001
0.01
0.1
1.
Time (sec)Normalized Head (ft/ft)WELL TEST ANALYSIS
Data Set:\...\MW3 Slug Out.aqt
Date:07/18/22 Time:10:02:13
PROJECT INFORMATION
Company:Terracon
Client:NCDEQ
Project:75159687B
Location:Mocksville, NC
Test Well:MW-3
Test Date:3/7/22
AQUIFER DATA
Saturated Thickness:21.76 ft Anisotropy Ratio (Kz/Kr):1.
WELL DATA (MW3 Slug In)
Initial Displacement:0.1728 ft Static Water Column Height:11.76 ft
Total Well Penetration Depth:11.76 ft Screen Length:11.76 ft
Casing Radius:0.166 ft Well Radius:0.166 ft
Gravel Pack Porosity:0.
SOLUTION
Aquifer Model:Unconfined Solution Method:Bouwer-Rice
K =0.0005998 ft/min y0 =0.09702 ft
AQTESOLV for Windows
Data Set: \\P75WFS01\Data\Projects\2020\75207118\Working Files\Diagrams-Drawings-Figures\Model\AQTESOLV\RW5 Slug In.aqt
Date: 07/18/22
Time: 10:03:00
PROJECT INFORMATION
Company: Terracon
Client: NCDEQ
Project: 75159687B
Location: Mocksville, NC
Test Date: 3/7/22
Test Well: MW-3
AQUIFER DATA
Saturated Thickness: 19.94 ft
Anisotropy Ratio (Kz/Kr): 1.
SLUG TEST WELL DATA
Test Well:RW5 Slug In
X Location: 0. ft
Y Location: 0. ft
Initial Displacement: 0.1132 ft
Static Water Column Height: 6.94 ft
Casing Radius: 0.166 ft
Well Radius: 0.166 ft
Well Skin Radius: 0.166 ft
Screen Length: 6.94 ft
Total Well Penetration Depth: 6.94 ft
Corrected Casing Radius (Bouwer-Rice Method): 0.166 ft
Gravel Pack Porosity: 0.
No. of Observations: 61
Observation Data
Time (sec)Displacement (ft)Time (sec)Displacement (ft)
20.0.1132 640.0.0718
40.0.1032 660.0.0707
60.0.1012 680.0.0697
80.0.0987 700.0.0684
100.0.0964 720.0.0696
120.0.0931 740.0.0678
140.0.0917 760.0.0679
160.0.0918 780.0.0697
180.0.0899 800.0.0679
200.0.0884 820.0.0667
220.0.0904 840.0.0671
240.0.0888 860.0.0669
260.0.0875 880.0.0687
280.0.086 900.0.0686
300.0.0846 920.0.0657
07/18/22 1 10:03:00
AQTESOLV for Windows
Time (sec)Displacement (ft)Time (sec)Displacement (ft)
320.0.085 940.0.0685
340.0.084 960.0.0676
360.0.082 980.0.0692
380.0.0835 1000.0.0703
400.0.0844 1020.0.0701
420.0.0835 1040.0.0675
440.0.0834 1060.0.0678
460.0.0825 1080.0.0667
480.0.0798 1100.0.0664
500.0.0788 1120.0.0667
520.0.0787 1140.0.0654
540.0.0754 1160.0.0644
560.0.0772 1180.0.0637
580.0.0752 1200.0.0633
600.0.0738 1220.0.0623
620.0.0748
SOLUTION
Slug Test
Aquifer Model: Unconfined
Solution Method: Bouwer-Rice
ln(Re/rw): 2.441
VISUAL ESTIMATION RESULTS
Estimated Parameters
Parameter Estimate
K 0.0003304 ft/min
y0 0.1083 ft
K = 0.0001679 cm/sec
T = K*b = 0.006588 ft²/min (0.102 sq. cm/sec)
AUTOMATIC ESTIMATION RESULTS
Estimated Parameters
Parameter Estimate Std. Error Approx. C.I.t-Ratio
K 0.00012 5.03E-6 +/- 1.007E-5 23.85 ft/min
y0 0.09873 0.001062 +/- 0.002124 93.ft
C.I. is approximate 95% confidence interval for parameter
t-ratio = estimate/std. error
No estimation window
K = 6.094E-5 cm/sec
T = K*b = 0.002392 ft²/min (0.03704 sq. cm/sec)
Parameter Correlations
K y0
07/18/22 2 10:03:00
AQTESOLV for Windows
K 1.00 0.83
y0 0.83 1.00
Residual Statistics
for weighted residuals
Sum of Squares.. 0.0007705 ft2
Variance.......... 1.306E-5 ft2
Std. Deviation .... 0.003614 ft
Mean ............. 2.571E-5 ft
No. of Residuals . 61
No. of Estimates.. 2
07/18/22 3 10:03:00
0.400.800.1.2E+3 1.6E+3 2.0E+3
0.001
0.01
0.1
1.
Time (sec)Normalized Head (ft/ft)WELL TEST ANALYSIS
Data Set:\...\RW5 Slug In.aqt
Date:07/18/22 Time:10:02:44
PROJECT INFORMATION
Company:Terracon
Client:NCDEQ
Project:75159687B
Location:Mocksville, NC
Test Well:MW-3
Test Date:3/7/22
AQUIFER DATA
Saturated Thickness:19.94 ft Anisotropy Ratio (Kz/Kr):1.
WELL DATA (RW5 Slug In)
Initial Displacement:0.1132 ft Static Water Column Height:6.94 ft
Total Well Penetration Depth:6.94 ft Screen Length:6.94 ft
Casing Radius:0.166 ft Well Radius:0.166 ft
Gravel Pack Porosity:0.
SOLUTION
Aquifer Model:Unconfined Solution Method:Bouwer-Rice
K =0.0003304 ft/min y0 =0.1083 ft
AQTESOLV for Windows
Data Set: \\P75WFS01\Data\Projects\2020\75207118\Working Files\Diagrams-Drawings-Figures\Model\AQTESOLV\RW5 Slug Out.aqt
Date: 07/18/22
Time: 10:03:37
PROJECT INFORMATION
Company: Terracon
Client: NCDEQ
Project: 75159687B
Location: Mocksville, NC
Test Date: 3/7/22
Test Well: MW-3
AQUIFER DATA
Saturated Thickness: 19.94 ft
Anisotropy Ratio (Kz/Kr): 1.
SLUG TEST WELL DATA
Test Well:RW5 Slug Out
X Location: 0. ft
Y Location: 0. ft
Initial Displacement: 0.1232 ft
Static Water Column Height: 6.94 ft
Casing Radius: 0.166 ft
Well Radius: 0.166 ft
Well Skin Radius: 0.166 ft
Screen Length: 6.94 ft
Total Well Penetration Depth: 6.94 ft
Corrected Casing Radius (Bouwer-Rice Method): 0.166 ft
Gravel Pack Porosity: 0.
No. of Observations: 63
Observation Data
Time (sec)Displacement (ft)Time (sec)Displacement (ft)
20.0.1232 660.0.0636
40.0.0992 680.0.062
60.0.0948 700.0.0614
80.0.0928 720.0.0628
100.0.0894 740.0.0622
120.0.0903 760.0.061
140.0.0915 780.0.0606
160.0.09 800.0.0595
180.0.0884 820.0.06
200.0.0886 840.0.0582
220.0.0873 860.0.0566
240.0.0855 880.0.0576
260.0.083 900.0.0549
280.0.0829 920.0.0537
300.0.0822 940.0.0531
07/18/22 1 10:03:37
AQTESOLV for Windows
Time (sec)Displacement (ft)Time (sec)Displacement (ft)
320.0.0821 960.0.0531
340.0.0804 980.0.0526
360.0.0798 1000.0.0519
380.0.0782 1020.0.0519
400.0.0759 1040.0.0492
420.0.074 1060.0.0498
440.0.0759 1080.0.0495
460.0.0774 1100.0.049
480.0.0756 1120.0.0473
500.0.0728 1140.0.0485
520.0.0735 1160.0.0466
540.0.0726 1180.0.0465
560.0.0705 1200.0.0451
580.0.0708 1220.0.0448
600.0.0686 1240.0.0443
620.0.0647 1260.0.0441
640.0.0667
SOLUTION
Slug Test
Aquifer Model: Unconfined
Solution Method: Bouwer-Rice
ln(Re/rw): 2.441
VISUAL ESTIMATION RESULTS
Estimated Parameters
Parameter Estimate
K 0.0004734 ft/min
y0 0.1068 ft
K = 0.0002405 cm/sec
T = K*b = 0.00944 ft²/min (0.1462 sq. cm/sec)
AUTOMATIC ESTIMATION RESULTS
Estimated Parameters
Parameter Estimate Std. Error Approx. C.I.t-Ratio
K 0.0001974 5.117E-6 +/- 1.023E-5 38.57 ft/min
y0 0.102 0.001035 +/- 0.00207 98.53 ft
C.I. is approximate 95% confidence interval for parameter
t-ratio = estimate/std. error
No estimation window
K = 0.0001003 cm/sec
T = K*b = 0.003935 ft²/min (0.06094 sq. cm/sec)
Parameter Correlations
07/18/22 2 10:03:37
AQTESOLV for Windows
K y0
K 1.00 0.81
y0 0.81 1.00
Residual Statistics
for weighted residuals
Sum of Squares.. 0.0006671 ft2
Variance.......... 1.094E-5 ft2
Std. Deviation .... 0.003307 ft
Mean ............. 1.271E-5 ft
No. of Residuals . 63
No. of Estimates.. 2
07/18/22 3 10:03:37
0.400.800.1.2E+3 1.6E+3 2.0E+3
0.001
0.01
0.1
1.
Time (sec)Normalized Head (ft/ft)WELL TEST ANALYSIS
Data Set:\...\RW5 Slug Out.aqt
Date:07/18/22 Time:10:03:20
PROJECT INFORMATION
Company:Terracon
Client:NCDEQ
Project:75159687B
Location:Mocksville, NC
Test Well:MW-3
Test Date:3/7/22
AQUIFER DATA
Saturated Thickness:19.94 ft Anisotropy Ratio (Kz/Kr):1.
WELL DATA (RW5 Slug Out)
Initial Displacement:0.1232 ft Static Water Column Height:6.94 ft
Total Well Penetration Depth:6.94 ft Screen Length:6.94 ft
Casing Radius:0.166 ft Well Radius:0.166 ft
Gravel Pack Porosity:0.
SOLUTION
Aquifer Model:Unconfined Solution Method:Bouwer-Rice
K =0.0004734 ft/min y0 =0.1068 ft

APPENDIX D
RBCA TOOLKIT MODEL RESULTS
RBCA Tool Kit for Chemical Releases, Version 2.6
##4. RBCA Evaluation Process
1. Project Information
Site Name:
Location:
Completed By:
Date:11-Jul-22 Job ID:75207118
2. Which Type of RBCA Analysis?
#####
#####
#####
3. Calculation Options
###
###
Individual Constituent Risk Goals Only
Individual and Cumulative Risk Goals 5. Commands and Options
Apply Source Depletion Algorithm
Time to Future Exposure 0 (yr)
C. Driscoll
Surry County, NC
Jerrys Place
Baseline Risks (Forward mode)
RBCA Cleanup Levels (Backward mode)
Main Screen
Affects which input data are required
Prepare Input Data Review Output
Data Complete? ( = yes, = no)
Site-Specific
Target Levels
Risk-Based
Screening
Levels
Tier Tier 2/3
RBCA Tool Kit for Chemical Releases© 2011 GSI Environmental Inc.Version 2.6
User Chemical
Database
?
Print Sheet
New Site
QuitHelp
Sav e Data
?
Set Units Print
Load Data...
Exposure Pathways
Air ParametersAir Parameters
GW Parameters
Soil ParametersSoil Parameters
Transport Models
Constituents of Concern
(COCs)
Exposure Flowchart
COC Chem. Parameters
Input Data Summary
User-Spec. COC Data...
Transient Domenico Analysis...
Baseline Risks...
Cleanup Levels...
RBCA Tool Kit for Chemical Releases, Version 2.6
#Site Name: Jerrys Place
Location: Surry County, NC
1. Groundwater Exposure Compl. By: C. Driscoll
Groundwater Ingestion/Job ID: 75207118 Date: 11-Jul-22
Surface Water Impact 3. Air Exposure
Receptor: to Outdoor Air Inhalation
On-site Off-site1 Off-site2 Receptor:
Distance:0 215 215 (ft)On-site Off-site1 Off-site2
Source Media:Distance:0 0 0 (ft)
Affected Groundwater Source Media:Construction worker
Affected Soils Leaching to Groundwater Affected Soils--Volatilization to Ambient Outdoor Air
Option:Affected Groundwater--Volatilization to Ambient Outdoor Air
Apply MCL value as ingestion RBEL (backward mode only)Affected Surface Soils--Particulates to Ambient Outdoor Air
GW Discharge to Surface Water Exposure Volatilization to Indoor Air Inhalation
Swimming Receptor:
Fish Consumption On-site Off-site1 Off-site2
Specified Water Quality Criteria Source Media:Distance:0 0 0 (ft)
Affected Soils--Volatilization to Enclosed Space
Affected Soils Leaching to GW--Volatilization to Enclosed Space
2. Surface Soil Exposure Affected Groundwater--Volatilization to Enclosed SpaceSource Media:
Receptor: Direct Ingestion 4. Commands and Options
On-site Dermal Contact
Construction Worker Inhalation (vol+part)
Option: Vegetable Ingestion
Apply UK (CLEA) SGV as soil concentration limit
Combined Exposure
Volatilization and Particulates
Exposure Pathway Identification
Main Print Sheet Help
?
?
?
Exposure Flowchart
Set Units
?
Veg OptionsVeg Options
Bldg OptionsBldg Options
Exposure Factors & Target Risks
Enter CriteriaEnter Criteria
RBCA Tool Kit for Chemical Releases, Version 2.6
Site Name: Jerrys Place Job ID: 75207118 Commands and Options
Location: Surry County, NC Date: 11-Jul-22
Compl. By: C. Driscoll
Selected COCs Representative COC Concentration
Groundwater Source Zone Soil Source Zone Mole Fraction
o n in Source
n o Material
(mg/L)note (mg/kg)note (-)
Benzene 3.0E-1 Concentrations of RW-5 on
Toluene 5.8E-1 10/7/2009 sampling event
Ethyl benzene 1.1E+0
Xylenes (mixed isomers)3.3E+0
Cumene 8.5E-2
Methyl t-Butyl ether (MTBE)3.4E-2
Naphthalene 5.6E-1
Trimethylbenzene, 1,2,4-1.1E+0
Apply
Raoul
t's
Source Media Constituents of Concern (COCs)
COC Sort List:
Top
Bottom
MoveUAdd/Ins
Delete MoveD
Main Screen Print Help
?
??
View Chemical Parameters
Enter Site DataEnter Site Data Enter Site DataEnter Site Data
RBCA Tool Kit for Chemical Releases, Version 2.6
##Site Name: Jerrys Place Job ID: 75207118
Location: Surry County, NC Date: 11-Jul-22
1. Vertical Transport, Surface Soil Column Compl. By: C. Driscoll
Outdoor Air Volatilization Factors 3. Groundwater Dilution Attenuation Factor
Surface soil volatilization model only
Combination surface soil/Johnson & Ettinger models
Thickness of surface soil zone 3.28 (ft)Calculate DAF using Domenico Model
User-specified VF from other model Domenico equation with dispersion only (no biodegradation)
Indoor Air Volatilization Factors Domenico equation first-order decay
Johnson & Ettinger model for soil and groundwater volatilization Modified Domenico equation using
Johnson & Ettinger for soil, Mass Flux model for groundwater electron acceptor superposition
User-specified VF from other model Biodegradation Capacity NC (mg/L)
Soil-to-Groundwater Leaching Factor — or —
ASTM Model User-Specified DAF Values
Apply Soil Attenuation Model (SAM)DAF values from other model or site data
Allow first-order biodecay
User-specified LF from other model 4. Chemical Decay and Source Depletion
Modeling Options
Disable Mass Balance Limit
Apply Dual Equilibrium Desorption Model
2. Lateral Air Dispersion Factor 5. Commands and Options
3-D Gaussian dispersion model Off-site 1 Off-site 2
User-Specified ADF 1.00E+0 1.00E+0 (-)
Transport Modeling Options
C
Enter VF ValuesEnter VF Values
Print SheetMain Screen Help
?
?
ASTM ModelASTM Model
?
Enter Source MassEnter Source Mass
Enter Decay RatesEnter Decay Rates
Enter DAF ValuesEnter DAF Values
Enter Site DataEnter Site Data
Enter Decay Rates
Enter Decay RatesEnter Decay Rates
Enter LF ValuesEnter LF Values
Enter VF ValuesEnter VF Values
?
?
?
?
C
RBCA Tool Kit for Chemical Releases, Version 2.6
Site Name: Jerrys Place Job ID: 75207118 Commands and Options
Location: Surry County, NC Date: 11-Jul-22
Compl. By: C. Driscoll
Saturated Zone Unsaturated Zone
First-Order Decay First-Order Decay
Constituent Half-Life Coefficient Half-Life Coefficient
(day)(1/day)(day)(1/day)
Benzene 7.2E+2 9.6E-4 7.2E+2 9.6E-4
Toluene 2.8E+1 2.5E-2 2.8E+1 2.5E-2
Ethyl benzene 2.3E+2 3.0E-3 2.3E+2 3.0E-3
Xylenes (mixed isomers)3.6E+2 1.9E-3 3.6E+2 1.9E-3
Cumene 1.6E+1 4.3E-2 1.6E+1 4.3E-2
Methyl t-Butyl ether (MTBE)3.6E+2 1.9E-3 1.8E+2 3.9E-3
Naphthalene 2.6E+2 2.7E-3 2.6E+2 2.7E-3
Trimethylbenzene, 1,2,4-5.6E+1 1.2E-2 5.6E+1 1.2E-2
Constituent Decay Rates
Return Print Sheet
HelpPaste Default Values
RBCA Tool Kit for Chemical Releases, Version 2.6
#Site Name: Jerrys Place Job ID: 75207118
Location: Surry County, NC Date: 11-Jul-22
1. Water-Bearing Unit Compl. By: C. Driscoll
Hydrogeology 3. Groundwater Dispersion
Groundwater Darcy velocity 1.1E+1 (ft/yr)Model:GW Ingestion
Groundwater seepage velocity 3.0E+1 (ft/yr)Off-site 1 Off-site 2 Off-site 1 Off-site 2
or Distance to GW receptors 215 215 0 0 (ft)
Hydraulic conductivity 3.1E+2 (ft/yr)
Hydraulic gradient 0.0363 (-)Longitudinal dispersivity 21.5 21.5 0 0 (ft)
Effective porosity 0.38 (-)Transverse dispersivity 7.095 7.095 0 0 (ft)
Sorption Vertical dispersivity 1.075 1.075 0 0 (ft)
Fraction organic carbon--saturated zone 0.001 (-) 4. Groundwater Discharge to Surface Water
Groundwater pH 6.46 (-)
2. Groundwater Source Zone Off-site 2
Groundwater plume width at source 100 (ft)Distance to GW/SW disharge point NA (ft)
Plume (mixing zone) thickness at source 20 (ft)
Plume width at GW/SW discharge (ft)
Saturated thickness 20 (ft)Plume thickness at GW/SW discharge (ft)
Length of source zone 147.637795 (ft)
Surface water flowrate at GW/SW discharge (ft^3/yr)
5. Commands and Options
GW to Indoor Air
Site-Specific Groundwater Parameters
or
or
?
?
?
Main Screen Use/Set Default
Values
Set Units
Print Sheet
Help
?
RBCA Tool Kit for Chemical Releases, Version 2.51
RBCA SITE ASSESSMENT TIER 2 TRANSIENT DOMENICO ANALYSIS
Site Name: Jerrys Place Completed By: C. Driscoll Job ID: 75207118
Site Location: Surry County, NC Date Completed: 11-Jul-22 1 of 8
Constiuent:Benzene
Source Medium:Affected Groundwater
Biodegredation:1st Order
Concentration vs. Distance from Source Time (yr)13.0 #DIV/0!##Off-site1 Off-site2
(for given time)#DIV/0!##Residential None
Distance (ft)0 5 10 15 20 25 30 35 40 45 50 ###215 NA
t = 13.0 yr #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0!###8.8E-3 NA
Steady-state #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0!#####8.9E-3 NA
POE Concentration Limit (mg/L)4.5E-2 NA
t = 13.0 yr
Concentration vs. Time Distance (ft)215 #DIV/0!
(for given distance from source)0 0 #DIV/0!
Time (yr)0 1.3 2.6 3.9 5.2 6.5 7.8 9.1 10.4 11.7 13 13 Time to Reach
x = 215 ft #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0!#####Conc. Limit (yr)
Off-site1 (215 ft)0.0E+0 9.0E-9 6.1E-5 9.0E-4 2.8E-3 5.0E-3 6.6E-3 7.7E-3 8.3E-3 8.6E-3 8.8E-3 Off-site1 NA
Off-site2 (215 ft)0.0E+0 9.0E-9 6.1E-5 9.0E-4 2.8E-3 5.0E-3 6.6E-3 7.7E-3 8.3E-3 8.6E-3 8.8E-3 Off-site2 NA
x = 215 ftConc.(mg/L)Conc.(mg/L)0.0E+0
1.0E-2
2.0E-23.0E-24.0E-2
5.0E-2
6.0E-27.0E-28.0E-2
9.0E-2
1.0E-1
0 5 10 15 20 25 30 35 40 45 50Conc. (mg/L)Distance
Steady-state
t = 13.0 yr
Off-site1 Conc.Limit
Off-site2 Conc.Limit
0.0E+0
5.0E-3
1.0E-2
1.5E-2
2.0E-2
2.5E-2
3.0E-2
0 2 4 6 8 10 12Conc. (mg/L)Time (yr)
x = 215 ft
Off-site1 (215 ft)
Off-site2 (215 ft)
Off-site1 Conc.Limit
Off-site2 Conc.Limit
RBCA Tool Kit for Chemical Releases, Version 2.51
RBCA SITE ASSESSMENT TIER 2 TRANSIENT DOMENICO ANALYSIS
Site Name: Jerrys Place Completed By: C. Driscoll Job ID: 75207118
Site Location: Surry County, NC Date Completed: 11-Jul-22 2 of 8
Constiuent:Toluene
Source Medium:Affected Groundwater
Biodegredation:1st Order
Concentration vs. Distance from Source Time (yr)13.0 #DIV/0!##Off-site1 Off-site2
(for given time)#DIV/0!##Residential None
Distance (ft)0 5 10 15 20 25 30 35 40 45 50 ###215 NA
t = 13.0 yr #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0!###1.5E-13 NA
Steady-state #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0!#####1.5E-13 NA
POE Concentration Limit (mg/L)1.3E+0 NA
t = 13.0 yr
Concentration vs. Time Distance (ft)215 #DIV/0!
(for given distance from source)0 0 #DIV/0!
Time (yr)0 1.3 2.6 3.9 5.2 6.5 7.8 9.1 10.4 11.7 13 13 Time to Reach
x = 215 ft #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0!#####Conc. Limit (yr)
Off-site1 (215 ft)0.0E+0 5.0E-15 1.5E-13 1.5E-13 1.5E-13 1.5E-13 1.5E-13 1.5E-13 1.5E-13 1.5E-13 1.5E-13 Off-site1 NA
Off-site2 (215 ft)0.0E+0 5.0E-15 1.5E-13 1.5E-13 1.5E-13 1.5E-13 1.5E-13 1.5E-13 1.5E-13 1.5E-13 1.5E-13 Off-site2 NA
x = 215 ftConc.(mg/L)Conc.(mg/L)0.0E+0
1.0E-2
2.0E-23.0E-24.0E-2
5.0E-2
6.0E-27.0E-28.0E-2
9.0E-2
1.0E-1
0 5 10 15 20 25 30 35 40 45 50Conc. (mg/L)Distance
Steady-state
t = 13.0 yr
Off-site1 Conc.Limit
Off-site2 Conc.Limit
0.0E+0
5.0E-3
1.0E-2
1.5E-2
2.0E-2
2.5E-2
3.0E-2
0 2 4 6 8 10 12Conc. (mg/L)Time (yr)
x = 215 ft
Off-site1 (215 ft)
Off-site2 (215 ft)
Off-site1 Conc.Limit
Off-site2 Conc.Limit
RBCA Tool Kit for Chemical Releases, Version 2.51
RBCA SITE ASSESSMENT TIER 2 TRANSIENT DOMENICO ANALYSIS
Site Name: Jerrys Place Completed By: C. Driscoll Job ID: 75207118
Site Location: Surry County, NC Date Completed: 11-Jul-22 3 of 8
Constiuent:Ethyl benzene
Source Medium:Affected Groundwater
Biodegredation:1st Order
Concentration vs. Distance from Source Time (yr)13.0 #DIV/0!##Off-site1 Off-site2
(for given time)#DIV/0!##Residential None
Distance (ft)0 5 10 15 20 25 30 35 40 45 50 ###215 NA
t = 13.0 yr #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0!###1.0E-4 NA
Steady-state #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0!#####1.0E-4 NA
POE Concentration Limit (mg/L)1.6E+0 NA
t = 13.0 yr
Concentration vs. Time Distance (ft)215 #DIV/0!
(for given distance from source)0 0 #DIV/0!
Time (yr)0 1.3 2.6 3.9 5.2 6.5 7.8 9.1 10.4 11.7 13 13 Time to Reach
x = 215 ft #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0!#####Conc. Limit (yr)
Off-site1 (215 ft)0.0E+0 2.2E-12 5.0E-7 1.5E-5 5.1E-5 8.1E-5 9.5E-5 1.0E-4 1.0E-4 1.0E-4 1.0E-4 Off-site1 NA
Off-site2 (215 ft)0.0E+0 2.2E-12 5.0E-7 1.5E-5 5.1E-5 8.1E-5 9.5E-5 1.0E-4 1.0E-4 1.0E-4 1.0E-4 Off-site2 NA
x = 215 ftConc.(mg/L)Conc.(mg/L)0.0E+0
1.0E-2
2.0E-23.0E-24.0E-2
5.0E-2
6.0E-27.0E-28.0E-2
9.0E-2
1.0E-1
0 5 10 15 20 25 30 35 40 45 50Conc. (mg/L)Distance
Steady-state
t = 13.0 yr
Off-site1 Conc.Limit
Off-site2 Conc.Limit
0.0E+0
5.0E-3
1.0E-2
1.5E-2
2.0E-2
2.5E-2
3.0E-2
0 2 4 6 8 10 12Conc. (mg/L)Time (yr)
x = 215 ft
Off-site1 (215 ft)
Off-site2 (215 ft)
Off-site1 Conc.Limit
Off-site2 Conc.Limit
RBCA Tool Kit for Chemical Releases, Version 2.51
RBCA SITE ASSESSMENT TIER 2 TRANSIENT DOMENICO ANALYSIS
Site Name: Jerrys Place Completed By: C. Driscoll Job ID: 75207118
Site Location: Surry County, NC Date Completed: 11-Jul-22 4 of 8
Constiuent:Xylenes (mixed isomers)
Source Medium:Affected Groundwater
Biodegredation:1st Order
Concentration vs. Distance from Source Time (yr)13.0 #DIV/0!##Off-site1 Off-site2
(for given time)#DIV/0!##Residential None
Distance (ft)0 5 10 15 20 25 30 35 40 45 50 ###215 NA
t = 13.0 yr #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0!###2.1E-3 NA
Steady-state #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0!#####2.2E-3 NA
POE Concentration Limit (mg/L)3.1E+0 NA
t = 13.0 yr
Concentration vs. Time Distance (ft)215 #DIV/0!
(for given distance from source)0 0 #DIV/0!
Time (yr)0 1.3 2.6 3.9 5.2 6.5 7.8 9.1 10.4 11.7 13 13 Time to Reach
x = 215 ft #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0!#####Conc. Limit (yr)
Off-site1 (215 ft)0.0E+0 1.1E-12 1.2E-6 7.9E-5 4.6E-4 1.0E-3 1.5E-3 1.9E-3 2.0E-3 2.1E-3 2.1E-3 Off-site1 NA
Off-site2 (215 ft)0.0E+0 1.1E-12 1.2E-6 7.9E-5 4.6E-4 1.0E-3 1.5E-3 1.9E-3 2.0E-3 2.1E-3 2.1E-3 Off-site2 NA
x = 215 ftConc.(mg/L)Conc.(mg/L)0.0E+0
1.0E-2
2.0E-23.0E-24.0E-2
5.0E-2
6.0E-27.0E-28.0E-2
9.0E-2
1.0E-1
0 5 10 15 20 25 30 35 40 45 50Conc. (mg/L)Distance
Steady-state
t = 13.0 yr
Off-site1 Conc.Limit
Off-site2 Conc.Limit
0.0E+0
5.0E-3
1.0E-2
1.5E-2
2.0E-2
2.5E-2
3.0E-2
0 2 4 6 8 10 12Conc. (mg/L)Time (yr)
x = 215 ft
Off-site1 (215 ft)
Off-site2 (215 ft)
Off-site1 Conc.Limit
Off-site2 Conc.Limit
RBCA Tool Kit for Chemical Releases, Version 2.51
RBCA SITE ASSESSMENT TIER 2 TRANSIENT DOMENICO ANALYSIS
Site Name: Jerrys Place Completed By: C. Driscoll Job ID: 75207118
Site Location: Surry County, NC Date Completed: 11-Jul-22 5 of 8
Constiuent:Cumene
Source Medium:Affected Groundwater
Biodegredation:1st Order
Concentration vs. Distance from Source Time (yr)13.0 #DIV/0!##Off-site1 Off-site2
(for given time)#DIV/0!##Residential None
Distance (ft)0 5 10 15 20 25 30 35 40 45 50 ###215 NA
t = 13.0 yr #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0!###6.6E-60 NA
Steady-state #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0!#####6.6E-60 NA
POE Concentration Limit (mg/L)1.6E+0 NA
t = 13.0 yr
Concentration vs. Time Distance (ft)215 #DIV/0!
(for given distance from source)0 0 #DIV/0!
Time (yr)0 1.3 2.6 3.9 5.2 6.5 7.8 9.1 10.4 11.7 13 13 Time to Reach
x = 215 ft #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0!#####Conc. Limit (yr)
Off-site1 (215 ft)0.0E+0 0.0E+0 3.2E-69 6.6E-61 6.5E-60 6.6E-60 6.6E-60 6.6E-60 6.6E-60 6.6E-60 6.6E-60 Off-site1 NA
Off-site2 (215 ft)0.0E+0 0.0E+0 3.2E-69 6.6E-61 6.5E-60 6.6E-60 6.6E-60 6.6E-60 6.6E-60 6.6E-60 6.6E-60 Off-site2 NA
x = 215 ftConc.(mg/L)Conc.(mg/L)0.0E+0
1.0E-2
2.0E-23.0E-24.0E-2
5.0E-2
6.0E-27.0E-28.0E-2
9.0E-2
1.0E-1
0 5 10 15 20 25 30 35 40 45 50Conc. (mg/L)Distance
Steady-state
t = 13.0 yr
Off-site1 Conc.Limit
Off-site2 Conc.Limit
0.0E+0
5.0E-3
1.0E-2
1.5E-2
2.0E-2
2.5E-2
3.0E-2
0 2 4 6 8 10 12Conc. (mg/L)Time (yr)
x = 215 ft
Off-site1 (215 ft)
Off-site2 (215 ft)
Off-site1 Conc.Limit
Off-site2 Conc.Limit
RBCA Tool Kit for Chemical Releases, Version 2.51
RBCA SITE ASSESSMENT TIER 2 TRANSIENT DOMENICO ANALYSIS
Site Name: Jerrys Place Completed By: C. Driscoll Job ID: 75207118
Site Location: Surry County, NC Date Completed: 11-Jul-22 6 of 8
Constiuent:Methyl t-Butyl ether (MTBE)
Source Medium:Affected Groundwater
Biodegredation:1st Order
Concentration vs. Distance from Source Time (yr)13.0 #DIV/0!##Off-site1 Off-site2
(for given time)#DIV/0!##Residential None
Distance (ft)0 5 10 15 20 25 30 35 40 45 50 ###215 NA
t = 13.0 yr #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0!###2.8E-4 NA
Steady-state #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0!#####2.8E-4 NA
POE Concentration Limit (mg/L)1.6E-1 NA
t = 13.0 yr
Concentration vs. Time Distance (ft)215 #DIV/0!
(for given distance from source)0 0 #DIV/0!
Time (yr)0 1.3 2.6 3.9 5.2 6.5 7.8 9.1 10.4 11.7 13 13 Time to Reach
x = 215 ft #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0!#####Conc. Limit (yr)
Off-site1 (215 ft)0.0E+0 1.9E-8 1.7E-5 1.1E-4 2.0E-4 2.5E-4 2.7E-4 2.8E-4 2.8E-4 2.8E-4 2.8E-4 Off-site1 NA
Off-site2 (215 ft)0.0E+0 1.9E-8 1.7E-5 1.1E-4 2.0E-4 2.5E-4 2.7E-4 2.8E-4 2.8E-4 2.8E-4 2.8E-4 Off-site2 NA
x = 215 ftConc.(mg/L)Conc.(mg/L)0.0E+0
1.0E-2
2.0E-23.0E-24.0E-2
5.0E-2
6.0E-27.0E-28.0E-2
9.0E-2
1.0E-1
0 5 10 15 20 25 30 35 40 45 50Conc. (mg/L)Distance
Steady-state
t = 13.0 yr
Off-site1 Conc.Limit
Off-site2 Conc.Limit
0.0E+0
5.0E-3
1.0E-2
1.5E-2
2.0E-2
2.5E-2
3.0E-2
0 2 4 6 8 10 12Conc. (mg/L)Time (yr)
x = 215 ft
Off-site1 (215 ft)
Off-site2 (215 ft)
Off-site1 Conc.Limit
Off-site2 Conc.Limit
RBCA Tool Kit for Chemical Releases, Version 2.51
RBCA SITE ASSESSMENT TIER 2 TRANSIENT DOMENICO ANALYSIS
Site Name: Jerrys Place Completed By: C. Driscoll Job ID: 75207118
Site Location: Surry County, NC Date Completed: 11-Jul-22 7 of 8
Constiuent:Naphthalene
Source Medium:Affected Groundwater
Biodegredation:1st Order
Concentration vs. Distance from Source Time (yr)13.0 #DIV/0!##Off-site1 Off-site2
(for given time)#DIV/0!##Residential None
Distance (ft)0 5 10 15 20 25 30 35 40 45 50 ###215 NA
t = 13.0 yr #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0!###6.4E-10 NA
Steady-state #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0!#####9.5E-10 NA
POE Concentration Limit (mg/L)3.1E-1 NA
t = 13.0 yr
Concentration vs. Time Distance (ft)215 #DIV/0!
(for given distance from source)0 0 #DIV/0!
Time (yr)0 1.3 2.6 3.9 5.2 6.5 7.8 9.1 10.4 11.7 13 13 Time to Reach
x = 215 ft #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0!#####Conc. Limit (yr)
Off-site1 (215 ft)0.0E+0 0.0E+0 1.1E-25 3.8E-18 1.4E-14 1.2E-12 1.8E-11 9.1E-11 2.5E-10 4.5E-10 6.4E-10 Off-site1 NA
Off-site2 (215 ft)0.0E+0 0.0E+0 1.1E-25 3.8E-18 1.4E-14 1.2E-12 1.8E-11 9.1E-11 2.5E-10 4.5E-10 6.4E-10 Off-site2 NA
x = 215 ftConc.(mg/L)Conc.(mg/L)0.0E+0
1.0E-2
2.0E-23.0E-24.0E-2
5.0E-2
6.0E-27.0E-28.0E-2
9.0E-2
1.0E-1
0 5 10 15 20 25 30 35 40 45 50Conc. (mg/L)Distance
Steady-state
t = 13.0 yr
Off-site1 Conc.Limit
Off-site2 Conc.Limit
0.0E+0
5.0E-3
1.0E-2
1.5E-2
2.0E-2
2.5E-2
3.0E-2
0 2 4 6 8 10 12Conc. (mg/L)Time (yr)
x = 215 ft
Off-site1 (215 ft)
Off-site2 (215 ft)
Off-site1 Conc.Limit
Off-site2 Conc.Limit
RBCA Tool Kit for Chemical Releases, Version 2.51
RBCA SITE ASSESSMENT TIER 2 TRANSIENT DOMENICO ANALYSIS
Site Name: Jerrys Place Completed By: C. Driscoll Job ID: 75207118
Site Location: Surry County, NC Date Completed: 11-Jul-22 8 of 8
Constiuent:Trimethylbenzene, 1,2,4-
Source Medium:Affected Groundwater
Biodegredation:1st Order
Concentration vs. Distance from Source Time (yr)13.0 #DIV/0!##Off-site1 Off-site2
(for given time)#DIV/0!##Residential None
Distance (ft)0 5 10 15 20 25 30 35 40 45 50 ###215 NA
t = 13.0 yr #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0!###6.1E-17 NA
Steady-state #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0!#####6.1E-17 NA
POE Concentration Limit (mg/L)7.8E-1 NA
t = 13.0 yr
Concentration vs. Time Distance (ft)215 #DIV/0!
(for given distance from source)0 0 #DIV/0!
Time (yr)0 1.3 2.6 3.9 5.2 6.5 7.8 9.1 10.4 11.7 13 13 Time to Reach
x = 215 ft #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0!#####Conc. Limit (yr)
Off-site1 (215 ft)0.0E+0 0.0E+0 8.9E-21 1.0E-17 5.0E-17 6.0E-17 6.1E-17 6.1E-17 6.1E-17 6.1E-17 6.1E-17 Off-site1 NA
Off-site2 (215 ft)0.0E+0 0.0E+0 8.9E-21 1.0E-17 5.0E-17 6.0E-17 6.1E-17 6.1E-17 6.1E-17 6.1E-17 6.1E-17 Off-site2 NA
x = 215 ftConc.(mg/L)Conc.(mg/L)0.0E+0
1.0E-2
2.0E-23.0E-24.0E-2
5.0E-2
6.0E-27.0E-28.0E-2
9.0E-2
1.0E-1
0 5 10 15 20 25 30 35 40 45 50Conc. (mg/L)Distance
Steady-state
t = 13.0 yr
Off-site1 Conc.Limit
Off-site2 Conc.Limit
0.0E+0
5.0E-3
1.0E-2
1.5E-2
2.0E-2
2.5E-2
3.0E-2
0 2 4 6 8 10 12Conc. (mg/L)Time (yr)
x = 215 ft
Off-site1 (215 ft)
Off-site2 (215 ft)
Off-site1 Conc.Limit
Off-site2 Conc.Limit
RBCA Tool Kit for Chemical Releases, Version 2.6
#Site Name: Jerrys Place
Location: Surry County, NC
1. Groundwater Exposure Compl. By: C. Driscoll
Groundwater Ingestion/Job ID: 75207118 Date: 11-Jul-22
Surface Water Impact 3. Air Exposure
Receptor: to Outdoor Air Inhalation
On-site Off-site1 Off-site2 Receptor:
Distance:0 90 350 (ft)On-site Off-site1 Off-site2
Source Media:Distance:0 0 0 (ft)
Affected Groundwater Source Media:Construction worker
Affected Soils Leaching to Groundwater Affected Soils--Volatilization to Ambient Outdoor Air
Option:Affected Groundwater--Volatilization to Ambient Outdoor Air
Apply MCL value as ingestion RBEL (backward mode only)Affected Surface Soils--Particulates to Ambient Outdoor Air
GW Discharge to Surface Water Exposure Volatilization to Indoor Air Inhalation
Swimming Receptor:
Fish Consumption On-site Off-site1 Off-site2
Specified Water Quality Criteria Source Media:Distance:0 0 0 (ft)
Affected Soils--Volatilization to Enclosed Space
Affected Soils Leaching to GW--Volatilization to Enclosed Space
2. Surface Soil Exposure Affected Groundwater--Volatilization to Enclosed Space
Source Media:
Receptor: Direct Ingestion 4. Commands and Options
On-site Dermal Contact
Construction Worker Inhalation (vol+part)
Option: Vegetable Ingestion
Apply UK (CLEA) SGV as soil concentration limit
Combined Exposure
Volatilization and Particulates
Exposure Pathway Identification
Main Print Sheet Help
?
?
?
Exposure Flowchart
Set Units
?
Veg OptionsVeg Options
Bldg OptionsBldg Options
Exposure Factors & Target Risks
Enter CriteriaEnter Criteria
RBCA Tool Kit for Chemical Releases, Version 2.51
Site Name: Jerrys Place Job ID: 75207118 Commands and Options
Location: Surry County, NC Date: 11-Jul-22
Compl. By: C. Driscoll
Selected COCs Representative COC Concentration
Groundwater Source Zone Soil Source Zone Mole Fraction
o n in Source
n o Material
(mg/L)note (mg/kg)note (-)
Benzene 0.0E+0 Concentrations of RW-5 on
Toluene 0.0E+0 4/29/2021 sampling event
Ethyl benzene 4.2E-2
Xylenes (mixed isomers)1.1E-1
Cumene 1.3E-2
Methyl t-Butyl ether (MTBE)0.0E+0
Naphthalene 5.9E-2
Trimethylbenzene, 1,2,4-1.3E-1
Apply
Raoul
t's
Source Media Constituents of Concern (COCs)
COC Sort List:
Top
Bottom
MoveUAdd/Ins
Delete MoveD
Main Screen Print Help
?
??
View Chemical Parameters
Enter Site DataEnter Site Data Enter Site DataEnter Site Data
RBCA Tool Kit for Chemical Releases, Version 2.6
##Site Name: Jerrys Place Job ID: 75207118
Location: Surry County, NC Date: 11-Jul-22
1. Vertical Transport, Surface Soil Column Compl. By: C. Driscoll
Outdoor Air Volatilization Factors 3. Groundwater Dilution Attenuation Factor
Surface soil volatilization model only
Combination surface soil/Johnson & Ettinger models
Thickness of surface soil zone 3.28 (ft)Calculate DAF using Domenico Model
User-specified VF from other model Domenico equation with dispersion only (no biodegradation)
Indoor Air Volatilization Factors Domenico equation first-order decay
Johnson & Ettinger model for soil and groundwater volatilization Modified Domenico equation using
Johnson & Ettinger for soil, Mass Flux model for groundwater electron acceptor superposition
User-specified VF from other model Biodegradation Capacity NC (mg/L)
Soil-to-Groundwater Leaching Factor — or —
ASTM Model User-Specified DAF Values
Apply Soil Attenuation Model (SAM)DAF values from other model or site data
Allow first-order biodecay
User-specified LF from other model 4. Chemical Decay and Source Depletion
Modeling Options
Disable Mass Balance Limit
Apply Dual Equilibrium Desorption Model
2. Lateral Air Dispersion Factor 5. Commands and Options
3-D Gaussian dispersion model Off-site 1 Off-site 2
User-Specified ADF 1.00E+0 1.00E+0 (-)
Transport Modeling Options
C
Enter VF ValuesEnter VF Values
Print SheetMain Screen Help
?
?
ASTM ModelASTM Model
?
Enter Source MassEnter Source Mass
Enter Decay RatesEnter Decay Rates
Enter DAF ValuesEnter DAF Values
Enter Site DataEnter Site Data
Enter Decay Rates
Enter Decay RatesEnter Decay Rates
Enter LF ValuesEnter LF Values
Enter VF ValuesEnter VF Values
?
?
?
?
C
RBCA Tool Kit for Chemical Releases, Version 2.6
#Site Name: Jerrys Place Job ID: 75207118
Location: Surry County, NC Date: 11-Jul-22
1. Water-Bearing Unit Compl. By: C. Driscoll
Hydrogeology 3. Groundwater Dispersion
Groundwater Darcy velocity 1.1E+1 (ft/yr)Model:GW Ingestion
Groundwater seepage velocity 3.0E+1 (ft/yr)Off-site 1 Off-site 2 Off-site 1 Off-site 2
or Distance to GW receptors 90 350 0 0 (ft)
Hydraulic conductivity 3.1E+2 (ft/yr)
Hydraulic gradient 0.0363 (-)Longitudinal dispersivity 9 35 0 0 (ft)
Effective porosity 0.38 (-)Transverse dispersivity 2.97 11.55 0 0 (ft)
Sorption Vertical dispersivity 0.45 1.75 0 0 (ft)
Fraction organic carbon--saturated zone 0.001 (-) 4. Groundwater Discharge to Surface Water
Groundwater pH 6.46 (-)
2. Groundwater Source Zone Off-site 2
Groundwater plume width at source 100 (ft)Distance to GW/SW disharge point NA (ft)
Plume (mixing zone) thickness at source 20 (ft)
Plume width at GW/SW discharge (ft)
Saturated thickness 20 (ft)Plume thickness at GW/SW discharge (ft)
Length of source zone 147.637795 (ft)
Surface water flowrate at GW/SW discharge (ft^3/yr)
5. Commands and Options
GW to Indoor Air
Site-Specific Groundwater Parameters
or
or
?
?
?
Main Screen Use/Set Default
Values
Set Units
Print Sheet
Help
?
RBCA Tool Kit for Chemical Releases, Version 2.51
RBCA SITE ASSESSMENT TIER 2 TRANSIENT DOMENICO ANALYSIS
Site Name: Jerrys Place Completed By: C. Driscoll Job ID: 75207118
Site Location: Surry County, NC Date Completed: 11-Jul-22 3 of 8
Constiuent:Ethyl benzene
Source Medium:Affected Groundwater
Biodegredation:1st Order
Concentration vs. Distance from Source Time (yr)20.0 FALSE 0 Off-site1 Off-site2
(for given time)0.01 ##Residential Residential
Distance (ft)0 35 70 105 140 175 210 245 280 315 350 ###90 350
t = 20 yr 4.2E-2 5.2E-3 1.1E-3 2.4E-4 6.0E-5 1.6E-5 4.6E-6 1.5E-6 5.0E-7 1.8E-7 6.9E-8 ###4.6E-4 6.9E-8
Steady-state 4.2E-2 5.2E-3 1.1E-3 2.4E-4 6.0E-5 1.6E-5 4.6E-6 1.5E-6 5.0E-7 1.8E-7 6.9E-8 #####4.6E-4 6.9E-8
POE Concentration Limit (mg/L)1.6E+0 1.6E+0
t = 20 yr
Concentration vs. Time Distance (ft)350 0.0001
(for given distance from source)0 0 5.0E-4
Time (yr)0 2 4 6 8 10 12 14 16 18 20 20 Time to Reach
x = 350 ft 0.0E+0 3.7E-15 9.7E-10 2.1E-8 5.1E-8 6.5E-8 6.8E-8 6.8E-8 6.9E-8 6.9E-8 6.9E-8 #####Conc. Limit (yr)
Off-site1 (90 ft)0.0E+0 4.2E-5 3.6E-4 4.5E-4 4.5E-4 4.6E-4 4.6E-4 4.6E-4 4.6E-4 4.6E-4 4.6E-4 Off-site1 NA
Off-site2 (350 ft)0.0E+0 3.7E-15 9.7E-10 2.1E-8 5.1E-8 6.5E-8 6.8E-8 6.8E-8 6.9E-8 6.9E-8 6.9E-8 Off-site2 NA
x = 350 ftConc.(mg/L)Conc.(mg/L)0.0E+0
5.0E-3
1.0E-21.5E-22.0E-2
2.5E-2
3.0E-23.5E-24.0E-2
4.5E-2
5.0E-2
0 50 100 150 200 250 300 350Conc. (mg/L)Distance
Steady-state
t = 20 yr
Off-site1 Conc.Limit
Off-site2 Conc.Limit
0.0E+0
1.0E-4
2.0E-4
3.0E-4
4.0E-4
5.0E-4
0 2 4 6 8 10 12 14 16 18 20Conc. (mg/L)Time (yr)
x = 350 ft
Off-site1 (90 ft)
Off-site2 (350 ft)
Off-site1 Conc.Limit
Off-site2 Conc.Limit
RBCA Tool Kit for Chemical Releases, Version 2.51
RBCA SITE ASSESSMENT TIER 2 TRANSIENT DOMENICO ANALYSIS
Site Name: Jerrys Place Completed By: C. Driscoll Job ID: 75207118
Site Location: Surry County, NC Date Completed: 11-Jul-22 4 of 8
Constiuent:Xylenes (mixed isomers)
Source Medium:Affected Groundwater
Biodegredation:1st Order
Concentration vs. Distance from Source Time (yr)20.0 FALSE 0 Off-site1 Off-site2
(for given time)0.1 ##Residential Residential
Distance (ft)0 35 70 105 140 175 210 245 280 315 350 ###90 350
t = 20 yr 1.1E-1 2.4E-2 7.1E-3 2.2E-3 7.0E-4 2.3E-4 8.1E-5 3.1E-5 1.2E-5 5.2E-6 2.3E-6 ###3.7E-3 2.3E-6
Steady-state 1.1E-1 2.4E-2 7.1E-3 2.2E-3 7.0E-4 2.3E-4 8.1E-5 3.1E-5 1.2E-5 5.2E-6 2.3E-6 #####3.7E-3 2.3E-6
POE Concentration Limit (mg/L)3.1E+0 3.1E+0
t = 20 yr
Concentration vs. Time Distance (ft)350 0.001
(for given distance from source)0 0 4.0E-3
Time (yr)0 2 4 6 8 10 12 14 16 18 20 20 Time to Reach
x = 350 ft 0.0E+0 1.8E-15 3.1E-9 1.8E-7 8.6E-7 1.6E-6 2.0E-6 2.2E-6 2.3E-6 2.3E-6 2.3E-6 #####Conc. Limit (yr)
Off-site1 (90 ft)0.0E+0 1.1E-4 2.1E-3 3.3E-3 3.6E-3 3.7E-3 3.7E-3 3.7E-3 3.7E-3 3.7E-3 3.7E-3 Off-site1 NA
Off-site2 (350 ft)0.0E+0 1.8E-15 3.1E-9 1.8E-7 8.6E-7 1.6E-6 2.0E-6 2.2E-6 2.3E-6 2.3E-6 2.3E-6 Off-site2 NA
x = 350 ftConc.(mg/L)Conc.(mg/L)0.0E+0
2.0E-2
4.0E-26.0E-28.0E-2
1.0E-1
1.2E-11.4E-11.6E-1
1.8E-1
2.0E-1
0 50 100 150 200 250 300 350Conc. (mg/L)Distance
Steady-state
t = 20 yr
Off-site1 Conc.Limit
Off-site2 Conc.Limit
0.0E+0
5.0E-4
1.0E-3
1.5E-3
2.0E-3
2.5E-3
3.0E-3
3.5E-3
4.0E-3
0 2 4 6 8 10 12 14 16 18 20Conc. (mg/L)Time (yr)
x = 350 ft
Off-site1 (90 ft)
Off-site2 (350 ft)
Off-site1 Conc.Limit
Off-site2 Conc.Limit
RBCA Tool Kit for Chemical Releases, Version 2.51
RBCA SITE ASSESSMENT TIER 2 TRANSIENT DOMENICO ANALYSIS
Site Name: Jerrys Place Completed By: C. Driscoll Job ID: 75207118
Site Location: Surry County, NC Date Completed: 11-Jul-22 5 of 8
Constiuent:Cumene
Source Medium:Affected Groundwater
Biodegredation:1st Order
Concentration vs. Distance from Source Time (yr)20.0 FALSE 0 Off-site1 Off-site2
(for given time)0.01 ##Residential Residential
Distance (ft)0 35 70 105 140 175 210 245 280 315 350 ###90 350
t = 20 yr 1.3E-2 1.1E-24 1.2E-34 2.3E-42 6.3E-49 9.8E-55 5.4E-60 7.8E-65 2.4E-69 1.4E-73 1.4E-77 ###3.1E-39 1.4E-77
Steady-state 1.3E-2 1.1E-24 1.2E-34 2.3E-42 6.3E-49 9.8E-55 5.4E-60 7.8E-65 2.4E-69 1.4E-73 1.4E-77 #####3.1E-39 1.4E-77
POE Concentration Limit (mg/L)1.6E+0 1.6E+0
t = 20 yr
Concentration vs. Time Distance (ft)350 1E-39
(for given distance from source)0 0 4.0E-39
Time (yr)0 2 4 6 8 10 12 14 16 18 20 20 Time to Reach
x = 350 ft 0.0E+0 0.0E+0 8.8E-83 1.2E-77 1.4E-77 1.4E-77 1.4E-77 1.4E-77 1.4E-77 1.4E-77 1.4E-77 #####Conc. Limit (yr)
Off-site1 (90 ft)0.0E+0 1.8E-42 3.1E-39 3.1E-39 3.1E-39 3.1E-39 3.1E-39 3.1E-39 3.1E-39 3.1E-39 3.1E-39 Off-site1 NA
Off-site2 (350 ft)0.0E+0 0.0E+0 8.8E-83 1.2E-77 1.4E-77 1.4E-77 1.4E-77 1.4E-77 1.4E-77 1.4E-77 1.4E-77 Off-site2 NA
x = 350 ftConc.(mg/L)Conc.(mg/L)0.0E+0
2.0E-3
4.0E-36.0E-38.0E-3
1.0E-2
1.2E-21.4E-21.6E-2
1.8E-2
2.0E-2
0 50 100 150 200 250 300 350Conc. (mg/L)Distance
Steady-state
t = 20 yr
Off-site1 Conc.Limit
Off-site2 Conc.Limit
0.0E+0
5.0E-40
1.0E-39
1.5E-39
2.0E-39
2.5E-39
3.0E-39
3.5E-39
4.0E-39
0 2 4 6 8 10 12 14 16 18 20Conc. (mg/L)Time (yr)
x = 350 ft
Off-site1 (90 ft)
Off-site2 (350 ft)
Off-site1 Conc.Limit
Off-site2 Conc.Limit
RBCA Tool Kit for Chemical Releases, Version 2.51
RBCA SITE ASSESSMENT TIER 2 TRANSIENT DOMENICO ANALYSIS
Site Name: Jerrys Place Completed By: C. Driscoll Job ID: 75207118
Site Location: Surry County, NC Date Completed: 11-Jul-22 7 of 8
Constiuent:Naphthalene
Source Medium:Affected Groundwater
Biodegredation:1st Order
Concentration vs. Distance from Source Time (yr)20.0 FALSE 0 Off-site1 Off-site2
(for given time)0.01 ##Residential Residential
Distance (ft)0 35 70 105 140 175 210 245 280 315 350 ###90 350
t = 20 yr 5.9E-2 1.7E-4 4.5E-6 2.2E-7 1.5E-8 1.3E-9 1.3E-10 1.7E-11 2.4E-12 3.8E-13 6.5E-14 ###7.7E-7 6.5E-14
Steady-state 5.9E-2 1.7E-4 4.5E-6 2.2E-7 1.5E-8 1.3E-9 1.4E-10 1.7E-11 2.4E-12 3.9E-13 7.0E-14 #####7.7E-7 7.0E-14
POE Concentration Limit (mg/L)3.1E-1 3.1E-1
t = 20 yr
Concentration vs. Time Distance (ft)350 1E-07
(for given distance from source)0 0 8.0E-7
Time (yr)0 2 4 6 8 10 12 14 16 18 20 20 Time to Reach
x = 350 ft 0.0E+0 0.0E+0 4.6E-29 2.8E-21 9.4E-18 6.4E-16 6.3E-15 2.2E-14 4.2E-14 5.7E-14 6.5E-14 #####Conc. Limit (yr)
Off-site1 (90 ft)0.0E+0 5.1E-15 4.2E-9 1.5E-7 4.7E-7 6.8E-7 7.5E-7 7.7E-7 7.7E-7 7.7E-7 7.7E-7 Off-site1 NA
Off-site2 (350 ft)0.0E+0 0.0E+0 4.6E-29 2.8E-21 9.4E-18 6.4E-16 6.3E-15 2.2E-14 4.2E-14 5.7E-14 6.5E-14 Off-site2 NA
x = 350 ftConc.(mg/L)Conc.(mg/L)0.0E+0
1.0E-2
2.0E-2
3.0E-2
4.0E-2
5.0E-2
6.0E-2
0 50 100 150 200 250 300 350Conc. (mg/L)Distance
Steady-state
t = 20 yr
Off-site1 Conc.Limit
Off-site2 Conc.Limit
0.0E+0
1.0E-7
2.0E-7
3.0E-7
4.0E-7
5.0E-7
6.0E-7
7.0E-7
8.0E-7
0 2 4 6 8 10 12 14 16 18 20Conc. (mg/L)Time (yr)
x = 350 ft
Off-site1 (90 ft)
Off-site2 (350 ft)
Off-site1 Conc.Limit
Off-site2 Conc.Limit
RBCA Tool Kit for Chemical Releases, Version 2.51
RBCA SITE ASSESSMENT TIER 2 TRANSIENT DOMENICO ANALYSIS
Site Name: Jerrys Place Completed By: C. Driscoll Job ID: 75207118
Site Location: Surry County, NC Date Completed: 11-Jul-22 8 of 8
Constiuent:Trimethylbenzene, 1,2,4-
Source Medium:Affected Groundwater
Biodegredation:1st Order
Concentration vs. Distance from Source Time (yr)20.0 FALSE 0 Off-site1 Off-site2
(for given time)0.1 ##Residential Residential
Distance (ft)0 35 70 105 140 175 210 245 280 315 350 ###90 350
t = 20 yr 1.3E-1 5.5E-7 6.9E-10 3.4E-12 3.3E-14 5.3E-16 1.2E-17 3.7E-19 1.5E-20 7.0E-22 3.9E-23 ###3.0E-11 3.9E-23
Steady-state 1.3E-1 5.5E-7 6.9E-10 3.4E-12 3.3E-14 5.3E-16 1.2E-17 3.7E-19 1.5E-20 7.0E-22 3.9E-23 #####3.0E-11 3.9E-23
POE Concentration Limit (mg/L)7.8E-1 7.8E-1
t = 20 yr
Concentration vs. Time Distance (ft)350 1E-11
(for given distance from source)0 0 3.0E-11
Time (yr)0 2 4 6 8 10 12 14 16 18 20 20 Time to Reach
x = 350 ft 0.0E+0 1.1E-38 1.3E-25 2.4E-23 3.9E-23 3.9E-23 3.9E-23 3.9E-23 3.9E-23 3.9E-23 3.9E-23 #####Conc. Limit (yr)
Off-site1 (90 ft)0.0E+0 7.7E-13 2.8E-11 3.0E-11 3.0E-11 3.0E-11 3.0E-11 3.0E-11 3.0E-11 3.0E-11 3.0E-11 Off-site1 NA
Off-site2 (350 ft)0.0E+0 1.1E-38 1.3E-25 2.4E-23 3.9E-23 3.9E-23 3.9E-23 3.9E-23 3.9E-23 3.9E-23 3.9E-23 Off-site2 NA
x = 350 ftConc.(mg/L)Conc.(mg/L)0.0E+0
2.0E-2
4.0E-26.0E-28.0E-2
1.0E-1
1.2E-11.4E-11.6E-1
1.8E-1
2.0E-1
0 50 100 150 200 250 300 350Conc. (mg/L)Distance
Steady-state
t = 20 yr
Off-site1 Conc.Limit
Off-site2 Conc.Limit
0.0E+0
5.0E-12
1.0E-11
1.5E-11
2.0E-11
2.5E-11
3.0E-11
0 2 4 6 8 10 12 14 16 18 20Conc. (mg/L)Time (yr)
x = 350 ft
Off-site1 (90 ft)
Off-site2 (350 ft)
Off-site1 Conc.Limit
Off-site2 Conc.Limit
RBCA Tool Kit for Chemical Releases, Version 2.51
RBCA SITE ASSESSMENT
1 OF 7
TIER 2 EXPOSURE CONCENTRATION AND INTAKE CALCULATION
GROUNDWATER EXPOSURE PATHWAYS o (Checked if Pathway is Complete)
SOILS : LEACHING TO
GROUNDWATER INGESTION 1) Source Medium 2) NAF Value (L/kg)3) Exposure Medium
Receptor Groundwater: POE Conc. (mg/L) (1)/(2)
Soil Conc.
On-site
(0 ft)
Off-site 1
(90 ft)
Off-site 2
(350 ft)
On-site
(0 ft)
Off-site 1
(90 ft)
Off-site 2
(350 ft)
Constituents of Concern (mg/kg)None Residential Residential None Residential Residential
Benzene
Toluene
Ethyl benzene
Xylenes (mixed isomers)
Cumene
Methyl t-Butyl ether (MTBE)
Naphthalene
Trimethylbenzene, 1,2,4-
* = Chemical with user-specified data
NOTE: NAF = Natural attenuation factor POE = Point of exposure
Site Name: Jerrys Place Date Completed: 11-Jul-22
Site Location: Surry County, NC Job ID: 75207118
Completed By: C. Driscoll
RBCA Tool Kit for Chemical Releases, Version 2.51
RBCA SITE ASSESSMENT
2 OF 7
TIER 2 EXPOSURE CONCENTRATION AND INTAKE CALCULATION
GROUNDWATER EXPOSURE PATHWAYS
SOILS : LEACHING TO
GROUNDWATER INGESTION (cont'd)4) Exposure Multiplier 5) Average Daily Intake Rate
(IRxEFxED)/(BWxAT) (L/kg-day)(mg/kg/day) (3) x (4)
On-site
(0 ft)
Off-site 1
(90 ft)
Off-site 2
(350 ft)
On-site
(0 ft)
Off-site 1
(90 ft)
Off-site 2
(350 ft)
Constituents of Concern None Residential Residential None Residential Residential
Benzene
Toluene
Ethyl benzene
Xylenes (mixed isomers)
Cumene
Methyl t-Butyl ether (MTBE)
Naphthalene
Trimethylbenzene, 1,2,4-
* = Chemical with user-specified data
NOTE: AT = Averaging time (days)ED = Exposure duration (yr)IR = Ingestion rate (mg/day)
BW = Body weight (kg)EF = Exposure frequency (days/yr)
Site Name: Jerrys Place Completed By: C. Driscoll Job ID: 75207118
Site Location: Surry County, NC Date Completed: 11-Jul-22
RBCA Tool Kit for Chemical Releases, Version 2.51
RBCA SITE ASSESSMENT
3 OF 7
TIER 2 EXPOSURE CONCENTRATION AND INTAKE CALCULATION
GROUNDWATER EXPOSURE PATHWAYS n (Checked if Pathway is Complete)
GROUNDWATER: INGESTION
1) Source Medium 2) NAF Value (unitless)3) Exposure Medium
Receptor Groundwater: POE Conc. (mg/L) (1)/(2)
Groundwater
On-site
(0 ft)
Off-site 1
(90 ft)
Off-site 2
(350 ft)
On-site
(0 ft)
Off-site 1
(90 ft)
Off-site 2
(350 ft)
Constituents of Concern Conc. (mg/L)None Residential Residential None Residential Residential
Benzene 0.0E+0 3.6E+0 2.7E+2 0.0E+0 0.0E+0
Toluene 0.0E+0 2.0E+7 6.5E+16 0.0E+0 0.0E+0
Ethyl benzene 4.2E-2 9.2E+1 6.1E+5 4.6E-4 6.9E-8
Xylenes (mixed isomers)1.1E-1 3.0E+1 4.7E+4 3.7E-3 2.3E-6
Cumene 1.3E-2 4.4E+36 9.2E+74 3.1E-39 1.4E-77
Methyl t-Butyl ether (MTBE)0.0E+0 7.2E+0 1.6E+3 0.0E+0 0.0E+0
Naphthalene 5.9E-2 7.6E+4 8.4E+11 7.7E-7 7.0E-14
Trimethylbenzene, 1,2,4-1.3E-1 4.4E+9 3.3E+21 3.0E-11 3.9E-23
NOTE: NAF = Natural attenuation factor POE = Point of exposure
Site Name: Jerrys Place Date Completed: 11-Jul-22
Site Location: Surry County, NC Job ID: 75207118
Completed By: C. Driscoll
RBCA Tool Kit for Chemical Releases, Version 2.51
RBCA SITE ASSESSMENT
4 OF 7
TIER 2 EXPOSURE CONCENTRATION AND INTAKE CALCULATION
GROUNDWATER EXPOSURE PATHWAYS
GROUNDWATER INGESTION (cont'd)
4) Exposure Multiplier 5) Average Daily Intake Rate
(IRxEFxED)/(BWxAT) (L/kg/day)(mg/kg/day) (3) x (4)
On-site
(0 ft)
Off-site 1
(90 ft)
Off-site 2
(350 ft)
On-site
(0 ft)
Off-site 1
(90 ft)
Off-site 2
(350 ft)
Constituents of Concern None Residential Residential None Residential Residential
Benzene 1.5E-2 1.5E-2 0.0E+0 0.0E+0
Toluene 6.4E-2 6.4E-2 0.0E+0 0.0E+0
Ethyl benzene 6.4E-2 6.4E-2 2.9E-5 4.4E-9
Xylenes (mixed isomers)6.4E-2 6.4E-2 2.3E-4 1.5E-7
Cumene 6.4E-2 6.4E-2 2.0E-40 9.2E-79
Methyl t-Butyl ether (MTBE)1.5E-2 1.5E-2 0.0E+0 0.0E+0
Naphthalene 6.4E-2 6.4E-2 4.9E-8 4.5E-15
Trimethylbenzene, 1,2,4-6.4E-2 6.4E-2 1.9E-12 2.5E-24
* = Chemical with user-specified data
NOTE: AT = Averaging time (days)ED = Exposure duration (yr)IR = Ingestion rate (mg/day)
BW = Body weight (kg)EF = Exposure frequency (days/yr)
Site Name: Jerrys Place Completed By: C. Driscoll Job ID: 75207118
Site Location: Surry County, NC Date Completed: 11-Jul-22
RBCA Tool Kit for Chemical Releases, Version 2.51
RBCA SITE ASSESSMENT
5 OF 7
TIER 2 EXPOSURE CONCENTRATION AND INTAKE CALCULATION
GROUNDWATER EXPOSURE PATHWAYS
MAXIMUM PATHWAY INTAKE (mg/kg/day)
(Maximum intake of active pathways
soil leaching & groundwater routes.)
On-site
(0 ft)
Off-site 1
(90 ft)
Off-site 2
(350 ft)
Constituents of Concern None Residential Residential
Benzene
Toluene
Ethyl benzene 2.9E-5 4.4E-9
Xylenes (mixed isomers)2.3E-4 1.5E-7
Cumene 2.0E-40 9.2E-79
Methyl t-Butyl ether (MTBE)
Naphthalene 4.9E-8 4.5E-15
Trimethylbenzene, 1,2,4-1.9E-12 2.5E-24
* = Chemical with user-specified data
Site Name: Jerrys Place Date Completed: 11-Jul-22
Site Location: Surry County, NC Job ID: 75207118
Completed By: C. Driscoll
RBCA Tool Kit for Chemical Releases, Version 2.51
RBCA SITE ASSESSMENT
6 OF 7
TIER 2 PATHWAY RISK CALCULATION
GROUNDWATER EXPOSURE PATHWAYS n (Checked if Pathway is Complete)
CARCINOGENIC RISK
(1) Is (2) Maximum Carcinogenic (3) Oral (4) Individual COC
Carcinogenic Intake Rate (mg/kg/day)Slope Factor Risk (2) x (3)
On-site
(0 ft)
Off-site 1
(90 ft)
Off-site 2
(350 ft)
(mg/kg-day)^-1 On-site
(0 ft)
Off-site 1
(90 ft)
Off-site 2
(350 ft)
Constituents of Concern None Residential Residential None Residential Residential
Benzene TRUE 1.5E-2
Toluene FALSE -
Ethyl benzene FALSE -
Xylenes (mixed isomers)FALSE -
Cumene FALSE -
Methyl t-Butyl ether (MTBE)TRUE 1.8E-3
Naphthalene FALSE -
Trimethylbenzene, 1,2,4-FALSE -
Total Pathway Carcinogenic Risk =
Site Name: Jerrys Place Date Completed: 11-Jul-22
Site Location: Surry County, NC Job ID: 75207118
Completed By: C. Driscoll
RBCA Tool Kit for Chemical Releases, Version 2.51
RBCA SITE ASSESSMENT
7 OF 7
TIER 2 PATHWAY RISK CALCULATION
GROUNDWATER EXPOSURE PATHWAYS n (Checked if Pathway is Complete)
TOXIC EFFECTS
(5) Maximum Toxicant (6) Oral (7) Individual COC
Intake Rate (mg/kg/day)Reference Hazard Quotient (5) / (6)
On-site
(0 ft)
Off-site 1
(90 ft)
Off-site 2
(350 ft)
Dose
(mg/kg/day)
On-site
(0 ft)
Off-site 1
(90 ft)
Off-site 2
(350 ft)
Constituents of Concern None Residential Residential None Residential Residential
Benzene 0.0E+0 0.0E+0 4.0E-3 0.0E+0 0.0E+0
Toluene 8.0E-2
Ethyl benzene 2.9E-5 4.4E-9 1.0E-1 2.9E-4 4.4E-8
Xylenes (mixed isomers)2.3E-4 1.5E-7 2.0E-1 1.2E-3 7.4E-7
Cumene 2.0E-40 9.2E-79 1.0E-1 2.0E-39 9.2E-78
Methyl t-Butyl ether (MTBE)0.0E+0 0.0E+0 1.0E-2 0.0E+0 0.0E+0
Naphthalene 4.9E-8 4.5E-15 2.0E-2 2.5E-6 2.2E-13
Trimethylbenzene, 1,2,4-1.9E-12 2.5E-24 5.0E-2 3.8E-11 5.0E-23
Total Pathway Hazard Index =1.5E-3 7.8E-7
Site Name: Jerrys Place Date Completed: 11-Jul-22
Site Location: Surry County, NC Job ID: 75207118
Completed By: C. Driscoll