SF_F_NCN000410797_20231025_FRB_PASI(1)

October 25, 2023
Ms. Sandra Bramble, RPM
Restoration and Site Evaluation Section
Superfund and Emergency Management Division
US EPA Region IV
61 Forsyth Street SW, 11th Floor
Atlanta, GA 30303
Subject: Site Reassessment (SRA)
Pleasant Garden PCE site
NCN 000 410 797
Pleasant Garden, Guilford County, NC
Dear Ms. Bramble:
Enclosed is the Site Reassessment (SRA) report for the Pleasant Garden PCE site in
Pleasant Garden, Guilford County, NC. The SRA report summarizes findings of a site inspection
(SI) and supplemental SI conducted in 2013 and 2014, respectively; and incorporates results of
subsequent investigations that the North Carolina Department of Environmental Quality
(NCDEQ) Underground Storage Tank Program and the Superfund Section Inactive Hazardous
Sites Branch conducted. Based on the results of the subsequent NCDEQ investigations, the site is
not recommended for further investigation under CERCLA. If you have any questions, please
contact me at [phone] or at [e-mail].
Sincerely,
_____________, _______ _____________, _______
Stuart F. Parker, Date Qu Qi, Head, Date
Hydrogeologist, Federal Remediation Branch
NC Superfund Section NC Superfund Section
10/25/202310/25/2023
STATE OF NORTH CAROLINA
Department of Environmental Quality
Division of Waste Management
Superfund Section
SITE REASSESSMENT
REPORT (SRAR)
PLEASANT GARDEN PCE SITE
NCN 000 410 979
Pleasant Garden, Guilford County, NC
October 2023
Stuart F. Parker Qu Qi
Hydrogeologist Federal Remediation Branch
Head
EXECUTIVE SUMMARY
The Pleasant Garden PCE (a.k.a., Pleasant Garden Road PCE) site is located along Pleasant
Garden Road in Pleasant Garden, Guilford County, NC. Various state and federal investigations,
conducted from 2007 to 2012, revealed tetrachloroethene (PCE) contamination in approximately
25 domestic wells and trichloroethene (TCE) in two drinking water wells at the site. Contaminant
concentrations exceeded the 5 micrograms per liter (µμg/L) EPA Maximum Contaminant
Level(MCLs) for PCE and TCE in six wells. The maximum detected PCE and TCE concentrations
were 200 µμg/L and 6.6 µμg/L, respectively.
The U. S. Environmental Protection Agency (EPA) Region 4 conducted an Emergency
Response Removal Action at the site in 2011 and 2012. The EPA installed carbon filtration units
on one domestic well and one commercial water-supply well where PCE concentrations exceeded
the MCL. One additional PCE-contaminated domestic well, located farther south on Pleasant
Garden Road, has been equipped with a point-of-entry (POE) carbon filtration unit, but the installer
was not identified during a subsequent North Carolina Department of Environment and Natural
Resources (NCDENR) CERCLA Site Inspection (SI) conducted in 2013.
Local industries that are potential sources for the PCE and TCE groundwater contamination
included two former dry-cleaning facilities, a furniture factory, automotive repair facilities, and a
former brick factory. The furniture factory historically contaminated groundwater with TCE and
PCE but completed pump-and-treat groundwater remediation and subsequently underwent
monitored natural attenuation. The brick factory included a machine shop and garage. Results of
limited soil gas photoionization screening conducted during the SI were inconclusive.
Domestic and community water supply wells constitute the drinking water source within
most of the 4-mile radius of the site, supplying a population of approximately 6,500. Exceptions
include areas served by Greensboro, NC municipal water lines, located beginning approximately
two miles north of the site. SI groundwater sampling included 29 domestic and commercial wells,
and a 2014 Supplemental SI consisted of re-sampling selected wells to allay potential data quality
concerns raised by the EPA following laboratory analysis of the SI groundwater samples. Both SI
results (2013 and 2014) confirmed the previously detected PCE groundwater contamination, and
select ion monitoring analysis detected much lower/trace TCE concentrations in groundwater
samples collected from 14 domestic and commercial wells. PCE concentrations exceeded the MCL
in three samples; two samples were pre-filtration and the third was a commercial well whose owner
had previously been issued a Health Risk Evaluation regarding the contamination. None of the
TCE concentrations exceeded the MCL. No post-filtration samples collected during the two SIs
contained chlorinated VOCs.
The NCDEQ has conducted additional investigations at and adjacent to the site after the
2013 and 2014 SIs. The DEQ Superfund Inactive Hazardous Sites Branch (IHSB) conducts
domestic drinking-water supply well sampling at approximately 3-year intervals, has annually
maintained a POE filtration system previously installed by the EPA on one domestic well, and
recently (2022) installed POE filtration systems on two additional domestic wells where PCE
concentrations exceeded MCLs. The NCDENR Underground Storage Tank (UST) Program
performs on-going groundwater monitoring on and around a UST site to the north along Pleasant
Garden Road and has collaborated with the IHSB on addressing threats to domestic groundwater
quality.
TABLE OF CONTENTS
EXECUTIVE SUMMARY
1.0 INTRODUCTION ..............................................................................................................1
2.0 SITE LOCATION AND DESCRIPTION, OPERATIONAL AND REGULATORY
HISTORY AND WASTE CHARACTERISTICS ..........................................................................1
2.1 Site Location ...........................................................................................................1
2.2 Site Description ........................................................................................................1
2.3 Site Operational History ..........................................................................................2
2.4 Site Regulatory History............................................................................................3
2.5 Source and Waste Characteristics ............................................................................4
3.0 PREVIOUS INVESTIGATIONS ........................................................................................4
3.1 4730 Pleasant Garden Road .....................................................................................4
3.2 Pleasant Garden Cleaners ........................................................................................5
3.3 Facilities North of 4730 Pleasant Garden Road .......................................................5
3.4 Hooker Furniture ......................................................................................................6
3.5 Soil Gas Investigations ............................................................................................6
4.0 GROUNDWATER MIGRATION PATHWAY .................................................................7
4.1 Hydrogeologic Setting .............................................................................................7
4.2 Groundwater Pathway Targets .................................................................................7
4.3 Groundwater Pathway Sampling and Results ..........................................................7
4.3.1 4730 Pleasant Garden Road ........................................................................8
4.3.2 Pleasant Garden Cleaners ...........................................................................8
4.3.3 North of 4730 Pleasant Garden Road .........................................................9
4.3.4 Hooker Furniture .........................................................................................9
4.3.5 EPA SESD Groundwater Sampling Event ...............................................10
4.3.6 NC Superfund Section SI and SSI Sampling ............................................10
4.4 Groundwater Conclusions ......................................................................................10
5.0 SURFACE WATER MIGRATION PATHWAY .............................................................11
5.1 Hydrologic Setting .................................................................................................11
5.2 Surface Water Pathway Targets .............................................................................11
5.3 Surface Water Pathway Sampling and Results ......................................................11
5.4 Surface Water Conclusions ....................................................................................11
6.0 SOIL EXPOSURE AND SUBSURFACE INTRUSION AND AIR
MIGRATION PATHWAYS .............................................................................................12
6.1 Land Use ................................................................................................................12
6.2 Subsurface Intrusion Sampling and Results ..........................................................12
6.3 Soil Exposure, Subsurface Intrusion, and Air Targets ...........................................12
6.4 Soil Exposure, Subsurface Intrusion, and Air Conclusions ...................................13
7.0 SUMMARY AND CONCLUSIONS ................................................................................13
LIST OF FIGURES
Figure 1: Pleasant Garden PCE Site 4-Mile Radius (2013)
Figure 2: Site Layout Map (2013)
Figure 3: S&ME Soil Vapor Sample Location Map (2017)
LIST OF TABLES
Table 1: Most Recent Water-supply Well Sampling Results
1.0 INTRODUCTION
Under authority of the Comprehensive Environmental Response,
Compensation, and Liability Act of 1980 (CERCLA) and the Superfund
Amendments and Reauthorization Act of 1986 (SARA), the North Carolina
Department of Environmental Quality (NCDEQ) (formerly North Carolina
Department of Environment and Natural Resources [NCDENR]) Superfund Section
conducted a site reassessment (SRA) at the Pleasant Garden PCE site in Pleasant
Garden, Guilford County, NC. The purpose of this investigation was to collect
information concerning conditions at the site sufficient to assess the threat posed to
human health and the environment and to determine the need for additional
CERCLA/SARA or other appropriate action.
The scope of this SRA included a review of NCDEQ file information
including the 2013 Site Inspection (SI) and 2014 Supplemental SI, as well as a soil
gas investigation that the NCDEQ Inactive Hazardous Sites Branch (IHSB)
conducted in 2017 and a groundwater investigation that the NCDEQ Underground
Storage Tank (UST) Program conducted in 2022. In addition, updated site conditions
and target data are presented. Environmental samples were not collected during this
SRA.
2.0 SITE DESCRIPTION, OPERATIONAL AND REGULATORY
HISTORY, AND WASTE CHARACTERISTICS
2.1 Site Location:
The site is located along Pleasant Garden Road (and connected side streets)
in Pleasant Garden, NC (see Figures 1 and 2). Site geographic coordinates are
35.9654o north latitude and -79.7633o west longitude. This reference location is 4730
Pleasant Garden Road on the northeast corner of Pleasant Garden Road and Forest
Acres Circle (south) (Ref. 2).
2.2 Site Description:
The property at 4730 Pleasant Garden Road is a strip mall. The strip mall
consists of a single, one-story commercial building containing seven small
businesses and three small outbuildings on a 1.06-acre parcel. (Refs. 3, 4, 5) (see
Figure 2).
The site is in a mixed residential, commercial, and industrial neighborhood.
Two blocks (500 feet) to the south, 4808 Pleasant Garden Road contains the former
Pleasant Garden Cleaners facility (Ref. 3). Additional local industry includes: an
auto repair facility to the north at 4712 Pleasant Garden Road; a diesel engine repair
facility at 4604 Pleasant Garden Road (1000 feet north); the Hanson Brick Company
Pleasant Garden PCE
NCN 000 404 797Site Reassessment
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factory 400 feet to the west of the strip mall, and the former Hooker Furniture factory
1500 feet to the southwest (Refs. 4, 5, 6, 7) (see Figure 2).
2.3 Site Operational History:
Guilford County records indicate that the approximately 14,000 square-foot
strip mall building at 4730 Pleasant Garden Road comprises seven individual stores
and was constructed in 1958. A town official reported that a dry-cleaning facility
operated in the strip mall (or a preceding structure) in the 1950s (Refs. 3, 8) ( Figure
2). In early 2011, the strip mall owner installed a new production well to supply the
businesses with potable water. The wellhead is located at 1201 Forest Acres Circle,
an undeveloped 1.8-acre parcel west of the strip mall. The wellhead stands in the
northwest corner of the parcel, approximately 50 feet from a regional railroad line.
The well may have been positioned there to maximize distance from a septic leach
field behind the strip mall (Ref. 9; Figure. 2).
The former Pleasant Garden Cleaners is a 0.42-acre land parcel at 4808
Pleasant Garden Road, located one block south of the strip mall at the southwest
corner of Pleasant Garden Road and Laurel Knoll Drive. T he property was
commercially developed in 1934, when an approximately 3000-square-foot structure
was constructed. Pleasant Garden Cleaners reportedly included a dry-cleaning
operation for several years between 1955 and 1982. The original vacant structure
was subsequently replaced for expansion of the Pleasant Garden Fire Department
(Refs. 3, 4, 6) (see Figure 2).
The former Hooker Furniture site (NCD 048 401 087) is located at 1212
Thrower Road, west of Pleasant Garden Road and the rail corridor that passes
through Pleasant Garden. The furniture manufacturing facility began operations in
the 1950s, operating as Founders Furniture from 1958 to 1978, as Thomasville
Furniture from 1978 to 1993, and as Hooker Furniture from 1993 to 2006. Since
2006, the facility has been operated as Pleasant Garden Enterprises, a printing and
plastic extrusion operation (Ref. 7) (see Figure 2).
The Hanson Brick factory was located on the west side of the railway and
500 feet north of Laurel Knoll Drive. The brick plant was originally constructed in
1947, and subsequently expanded to an area of 105,786 square feet. The facility’s
plant maintenance/engineering office building, which included a machine shop, was
located 200 feet south of the east entrance gate off Forest Acres Circle. On the
northernmost portion of the property stands a former maintenance
garage/warehouse. Hanson personnel reported that the garage/warehouse
historically contained an indoor parts-cleaning station. The plant was demolished to
its foundation slabs at an unspecified time after 2014; the plant office building is the
only remaining structure visible on 2020 aerial imagery (Refs. 3, 4, 5, 10, 11) (see
Figure 2).
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2.4 Site Regulatory History:
The strip mall at 4730 Pleasant Garden Road reportedly contained a dry-
cleaning facility during the 1950s, prior to regulation by the NC Hazardous Waste
Section/Resource Conservation and Recovery Act (RCRA) or the Dry-cleaning
Solvent Cleanup Act (DSCA) (Ref. 8) (see Figure 2).
Pleasant Garden Cleaners, south of the strip mall, ceased operations by 1982.
From 2007 through 2011, the Guilford County Health Department (GCHD) and
contractors for the NC IHSB and the NC Dry-cleaning Solvent Cleanup Act (DSCA)
Program investigated groundwater contamination by chlorinated volatile organic
compounds (cVOCs), suspected to have originated at the site. Based upon the results,
Pleasant Garden Cleaners was concluded to have been an unlikely source of
significant cVOC groundwater contamination (Refs. 6, 12, 13, 14) (see Figure 2).
In August, September, and October 2011 a NC UST Program contractor and
the GCHD sampled private domestic/commercial wells between 4621 to 4718
Pleasant Garden Road. These well locations were adjacent to, or extended north
from, an automotive repair facility at 4712 Pleasant Garden Road. Based on the
sampling results, and at the request of the (then) NC Department of Environment and
Natural Resources (NCDENR), the U. S. Environmental Protection Agency (EPA)
Region 4 Emergency Response and Removal Branch (ERRB) conduct an
Emergency Response Removal Assessment at the site (Refs. 13, 15) (see Table 1).
In January 2012, the EPA’s Science and Ecosystem Support Division (SESD)
conducted a more comprehensive groundwater investigation, sampling wells from
4125 Pleasant Garden Road south to 4834 Pleasant Garden Road and at residences
on adjoining streets (Ref. 16) (see Figure 2).
Subsequent to the SI and Supplement SI, the NC IHSB has been the lead
agency monitoring supply wells along the north section of Pleasant Garden Road,
annually maintaining a point-of-entry (POE) activated carbon filtration system
previously installed by the EPA at 4710 Pleasant Garden Road, and having installed
additional POE systems at 4705 and 4713 Pleasant Garden Road in 2022 (Refs. 21,
22, 35, 36).
The NC UST Section has conducted long-term groundwater monitoring in
and around Pleasant Garden Curb Market, 4700 Pleasant Garden Road (NCDEQ
Incident # 9151, UST # WS-3159, Facility ID # 00-0-0000030234), where multiple
petroleum USTs were removed in 1991 (Refs. 23, 24).
Hooker Furniture (NCD 048 401 087) at 1212 Thrower Road was
investigated for groundwater contamination beginning in the 1990s. The site owner
conducted pump-and-treat groundwater remediation from 1996 to 1999, reducing
groundwater contaminant concentrations sufficiently that the NC DENR approved
the site for monitored natural attenuation (MNA) in 2000 (Refs. 7, 25) (see Figure 2
and Section 4.3.4 of this report).
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2.5 Source and Waste Characteristics:
The source evaluated for the SI and Supplemental SI was an apparently
comingled PCE groundwater plume (with lower TCE concentration at the location
of highest PCE concentrations) that likely originated from multiple sources.
Groundwater contamination has been documented in several drinking water wells at
intervals along Pleasant Garden Road and Forest Acres Circle, and along Laurel
Knoll Drive to the south. PCE and TCE reportedly were used at several businesses
within the groundwater plume (Refs. 19, 20). Based on the SI findings, groundwater
contaminant plumes at the former Pleasant Garden Cleaners and Hooker Furniture
sites now appear to be separate from the contamination to the north, and the primary
focus of the current SRA is on the northern contaminant plume.
Other than the UST site at 4700 Pleasant garden Road, no soil sampling has
been conducted at 4730 Pleasant Garden Road or at the residential and commercial
properties to the immediate north with cVOC groundwater contamination. To the
south, soil samples collected at the former Pleasant Garden Cleaners and Hooker
Furniture sites were non-detect for cVOCs (Refs. 6, 14, 25). No waste/source
sampling was conducted as part of the current SRA.
3.0 PREVIOUS INVESTIGATIONS
This section provides a chronology of previous investigations conducted on
various properties throughout the site. Analytical results for these investigations are
discussed later in Sections 4.3, Groundwater Sampling Results and 6.3, Subsurface
Intrusion Sampling Results.
In 2013, the NC Superfund Section completed a Pre-CERCLA Screening
Assessment (PCS), an Abbreviated Preliminary Assessment (APA) and a Site
Inspection (SI), followed by a Supplemental SI in 2014 (Refs 17, 18, 19, 20).
3.1 4730 Pleasant Garden Road:
In January and February 2012, the EPA SESD collected samples from the r-
drinking water supply well behind the strip mall located at 4730 Pleasant Garden
Road. Strip mall business tenants reported to EPA personnel that a small frame
structure behind the strip mall had historically been leased for residential use and,
along with the strip mall businesses, was supplied water by the contaminated well.
The EPA proposed to install a point-of-entry (POE) filtration unit for supply to the
frame structure. Instead, the strip mall owner requested that EPA install the POE
filtration system for the entire strip mall property and agreed in writing to assume
responsibility for its maintenance. In late March 2012, EPA contractors installed the
POE system inside an existing outbuilding adjacent to the frame structure (Refs. 9,
15, 16); Table 1).
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During the February 2013 sampling event, the EPA collected samples from
three wells (design and purpose unspecified) on the Hanson Brick property, west of
the contaminated well at 4730 Pleasant Garden Road. One sample contained “trace
levels” of PCE. No other chlorinated cVOCs were detected (Ref. 15).
During the March 2013 SI, NC Superfund Section personnel collected pre-
and post-POE filtration system samples from the well at 4730 Pleasant Garden Road,
and determined that the POE system was still functioning adequately. During the
May 2014 Supplemental SI, resampling detected low-level tetrachloroethylene
(PCE), in the post-filtration system groundwater sample. The Superfund Section
notified the owner that maintenance was due on the system, as previously agreed
with the EPA (Refs. 19, 20) (see Table 1).
3.2 Pleasant Garden Cleaners:
In January 2007, the GCHD began monitoring groundwater contamination in
domestic wells surrounding the Pleasant Garden Cleaners property. A structure
across the street, at 4805 Pleasant Garden Road, had been equipped with a POE
filtration system between July 2009 and May 2011, due to PCE contamination (Ref.
12).
In 2009, the GCHD sampled 11 additional wells surrounding the former
Pleasant Garden Cleaners property and monitored a domestic well to the west at 5905
Laurel Knoll Drive. The GCHD also periodically sampled to monitor cVOC
concentrations at a domestic well at neighboring 5906 Laurel Knoll Drive from
January 2007 to April 2011 (Ref. 18).
In May and October 2010, NC DSCA contractors conducted a subsurface soil
and groundwater investigation at the former Pleasant Garden Cleaners. The May
investigation included completion of six soil borings and installation of temporary
monitoring wells at the property. The October investigation added three additional
soil borings, one of which was completed as a permanent monitoring well (Ref. 6)
(see Table 1).
In June 2011, IHSB contractors completed a limited soil and groundwater
investigation at Pleasant Garden Cleaners, including resampling the domestic well
at 5905 Laurel Knoll Drive (Ref. 14). The TCE-contaminated well at 5905 Laurel
Knoll Drive was also sampled during the February 2012 SESD and March 2013 SI
sampling events (Refs. 14, 19).
3.3 Facilities North of 4730 Pleasant Garden Road:
On August 11, 2011, the NC UST Program sampled private
domestic/commercial wells north of the automotive repair facility at 4712 Pleasant
Garden Road. Concurrently, the GCHD sampled a domestic well sample at 4710
Pleasant Garden Road, adjacent to the automotive repair facility. In September and
October 2011, the GCHD collected samples from the wells at 4710 and 4712 Pleasant
Pleasant Garden PCE
NCN 000 404 797Site ReassessmentPage 5 of 13
Garden Road (Refs. 13, 15) (see Figure 2 and Table 1).
On November 30, 2011, the EPA SESD collected groundwater samples at
4710, 4712, 4707 and 4515 Pleasant Garden Road (Refs. 13, 15) (see Figure 2 and
Table 1). Subsequently in January and February 2012, SESD sampled 33 wells from
4125 to 4834 Pleasant Garden Road and at residences on adjoining streets. Sampling
included the supply well for a diesel repair facility at 4604 Pleasant Garden Road,
where PCE was detected at 1 microgram per liter (μg/L) (Refs. 16, 19, 20) (see Table
1).
The NC Superfund IHSB conducted periodic sampling of domestic
groundwater supply wells in the site vicinity in 2016, 2019, and 2022. During the
most recent event in May 2022, the IHSB sampled 11 domestic wells along Pleasant
Garden Road and adjacent Forest Acres Circle (Refs. 21, 22, 35).
During a November 2022 NC UST Section sampling event, PCE was
detected in the domestic well at 4705 Pleasant Garden Road, across from the UST
site at 4700. The UST Section notified the NC IHSB, which then issued a Health
Risk Evaluation to the well owner and installed POE filtration system at that well,
and also at 4713 Pleasant Garden Road, where PCE concentration had also
increased above the MCL. The IHSB has confirmed that they will continue to
monitor/maintain the performance of both filtration systems (Refs. 23, 24, 36).
3.4 Hooker Furniture:
Hooker Furniture (NCD 048 401 087) was investigated for groundwater
contamination beginning in the 1990s. Initially, PCE and TCE concentrations in
groundwater at the facility both approached 100 μg/L. The site owner had initiated
pump-and-treat groundwater remediation in 1996. MNA of groundwater
commenced at the site in 2000. Available documents record semi-annual
groundwater monitoring well sampling events from March 2010 through September
2013. An adjacent domestic well to the west, which was equipped with a POE
filtration system, was also sampled intermittently during the process, but its PCE
concentration never exceeded approximately 1 μg/L (Refs. 7, 25).
3.5 Soil Gas Investigations:
On May 15, 2013, the NC Superfund Section conducted soil gas screening
efforts at two properties within the site, using a photoionization detector (PID). At
the Hanson Brick plant, areas targeted for soil vapor surveying included: 1) an
outdoor area east of the former plant maintenance building; and 2) outdoor areas
northwest and south of the maintenance garage/warehouse. The NC Superfund
Section also attempted soil gas surveying near the contaminated supply well west of
the strip mall at 4730 Pleasant Garden Road (Refs. 10, 11) (see Figure 2).
In December 2016, the NC IHSB conducted a limited soil gas investigation
at the site. During the investigation, the soil gas probes were installed to a depth of
8 feet below ground surface at 4710, 4712 and 4730 Pleasant Garden Road between
Pleasant Garden PCE
NCN 000 404 797Site ReassessmentPage 6 of 13
residences and businesses and the two highly contaminated water supply wells at the
site. Sampling was conducted using Summa Canisters after helium-shroud leak-
testing was completed. (Ref. 26) (see Figure 2).
4.0 GROUNDWATER MIGRATION PATHWAY
4.1 Hydrogeologic Setting:
Guilford County, NC lies within the Piedmont Physiographic Province. The
piedmont landscape is characterized by rolling surface topography with well-
rounded hills and northeast-southwest-oriented ridges, dendritic surface drainage
patterns and broad, flat inter-stream areas (Ref. 28) ( see Figure 1).
The site is located in the Carolina Slate Belt geologic region of the state.
Bedrock in this region is generally late Proterozoic or early Paleozoic volcanic and/or
sedimentary parent rock that has undergone greenschist-grade regional
metamorphism. Bedrock in Pleasant Garden is mapped as a metamorphosed felsic
igneous intrusive complex ranging in lithology from granite and granodiorite to
quartz diorite and quartz monzonite. A large body of metamorphosed intermediate
igneous intrusive rock, of likely dioritic composition, narrows and extends northeast
beneath Laurel Knoll Drive, the 4700 block of Pleasant Garden Road and much of
Forest Acres Circle (Refs. 28, 29).
Precipitation that does not run off to streams infiltrates into the ground
surface. Infiltrating water that is not lost to evapotranspiration migrates down
through the soil column to recharge the underlying aquifer. In the piedmont, the
groundwater aquifer consists of fractured bedrock and an overlying veneer of
saprolite (weathered rock). Groundwater seeps through the permeable saprolite, but
migration through competent bedrock occurs primarily via discontinuities including
fractures, faults and bedding planes (Ref. 28).
4.2 Groundwater Targets:
Groundwater constitutes the drinking water supply for most of the population
within the 4-mile radius of the site. Exceptions include incorporated portions of
southeastern Greensboro, where municipal water lines supply drinking water to
portions of the >2- to 3-mile and the >3- to 4-mile and distance increments from the
site. As of 2023, private residential and community wells supplied an estimated
groundwater population of about 6205 people within 4 miles of the site. No
municipal wells or wellhead protection areas exist within the 4-mile radius.
Currently, no municipal or other community wells exist within 0.5 mile
downgradient (west) from the site (Refs. 30, 31, 32).
4.3 Groundwater Sampling:
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4.3.1 4730 Pleasant Garden Road:
In January and February 2012, representatives of the EPA Region 4 SESD
collected samples from the drinking water supply well at the strip mall located at
4730 Pleasant Garden Road. The samples contained PCE at up to 200 μg/L and
trichloroethene (TCE) at up to 1.2 μg/L (Refs. 15, 16) (see Figure 2 and Table 1).
During the March 2013 SI, NC Superfund Section personnel collected pre-
and post-POE filtration system samples from the well at 4730 Pleasant Garden Road
and determined that the POE filtration system was still functioning adequately.
During the May 2014 Supplemental SI, resampling detected PCE at 2.7 μg/L in the
post-POE filtration system sample (Refs. 19, 20).
4.3.2 Pleasant Garden Cleaners:
In January 2007, the GCHD began monitoring groundwater contamination in
domestic wells surrounding the Pleasant Garden Cleaners property. Across the
street, at 4805 Pleasant Garden Road, groundwater PCE concentrations (up to 10.9
μg/L) exceeded the 5 μg/L EPA Maximum Contaminant Level (MCL). The house
at this address was not used as a residence but was equipped with a functioning POE-
filtration system between July 2009 and May 2011 (Ref. 12) (see Figure 2 and Table
1).
In 2009, the GCHD sampled 11 additional wells surrounding the former
Pleasant Garden Cleaners property. No PCE results exceeded the EPA MCL.
However, a domestic well to the west at 5905 Laurel Knoll Drive contained TCE at
6.3 μg/L, above its EPA MCL of 5 μg/L. The GCHD monitored the domestic well
at neighboring 5906 Laurel Knoll Drive from January 2007 to April 2011; PCE
concentrations remained below the MCL, and no TCE was detected (Ref. 13) (see
Figure 2 and Table 1).
In 2010, the NC Dry-cleaning Solvent Cleanup Act (DSCA) Program
collected groundwater samples from six temporary monitoring wells (May) and one
permanent monitoring well (October) at the former Pleasant Garden Cleaners. The
depth of the temporary wells is not known. The permanent monitoring well was
completed at top of bedrock (60 feet below ground surface [bgs]) with a 10-foot
screen. The subsurface soil investigations revealed no chlorinated VOC soil
contamination. The groundwater investigation locally detected 1.2 to 1.4 μg/L PCE,
plus methyl tertiary butyl ether (MTBE) and toluene. The PCE concentration
exceeded its (0.7 μg/L) NCAC 2L groundwater standard, but not the MCL. Based
upon these results, DCSA concluded that Pleasant Garden Cleaners was unlikely to
continue to be a significant groundwater contaminant source (Ref. 6) (see Table 1).
In June 2011, the NC IHSB collected groundwater samples at Pleasant
Garden Cleaners, including resampling the drinking water supply well at 5905
Laurel Knoll Drive that contained TCE above its MCL in 2009. The TCE
concentration (3.8 μg/L) in the well had decreased to less than the MCL. The IHSB
Pleasant Garden PCE
NCN 000 404 797Site ReassessmentPage 8 of 13
concurred with the DSCA conclusion regarding the Pleasant Garden Cleaners site.
The TCE-contaminated well at 5905 Laurel Knoll Drive was also sampled during
the February 2012 SESD potable well and March 2013 NC Superfund Section SI
sampling events. The TCE concentrations (up to 2.4 μg/L) remained below the MCL.
SI sample PCE results for 4805 Pleasant Garden Road were also below the MCL
(pre-POE filtration) and non-detect (post-POE filtration) (Refs. 14, 19, 20) (see
Table 1).
4.3.3 North of 4730 Pleasant Garden Road:
On August 11, 2011, a NC UST Program sampled five private
domestic/commercial wells from 4621 to 4708 Pleasant Garden Road. These well
locations extended north from the automotive repair facility at 4712 Pleasant Garden
Road. Concurrently, the GCHD collected a domestic well sample at 4710 Pleasant
Garden Road, adjacent to the auto repair facility. PCE results from 4710 and 4708
Pleasant Garden Road were 41 μg/L and 2.5 μg/L, respectively, while the four wells
farther north were non-detect. In September and October 2011, the GCHD collected
samples from the wells at 4710 and 4712 Pleasant Garden Road; the PCE
concentrations were 38 μg/L and 32 μg/L, respectively. PCE was also detected in
wells at neighboring properties located at 4707, 4711 and 4718 Pleasant Garden
Road, but these concentrations were below the MCL of 5 μg/L for PCE (Refs. 13,
15) (see Figure 2 and Table 1).
On November 30, 2011, the EPA SESD collected groundwater samples at
4710, 4712, 4707 and 4515 Pleasant Garden Road. At 4710 and 4712, PCE results
were 32.8 μg/L and 31.7 μg/L, respectively. The other PCE results were below the
MCL (Refs. 13, 15) (see Table 1).
The IHSB conducted domestic well sampling events along Pleasant Garden
Road and connecting Forest Acres Circle in 2016, 2019, and 2022. During its May
2022 groundwater sampling event, the IHSB sampled 11domestic drinking-water
wells along Pleasant Garden Road and adjacent Forest Acres Circle. The
groundwater sample collected from the well located at 4713 Pleasant Garden Road
contained PCE at 5.5 μg/L, which is above its MCL of 5 μg/L. The IHSB
subsequently installed a POE filtration system at the residence (Refs. 21, 22, 36).
In November 2022, UST Section sampling detected PCE at 5.82 μg/L (vs 4.0
μg/L when the IHSB sampled in May 2022) in the domestic well at 4705 Pleasant
Garden Road, across from the UST site at 4700 Pleasant Garden Road. The UST
Section notified the NC IHSB, which then issued a Health Risk Evaluation to the
well owner and installed a POE filtration system at that well (Refs. 23, 24, 36) (See
Table 1).
4.3.4 Hooker Furniture:
Initial (1990s) PCE and TCE concentrations in groundwater at the Hooker
Furniture facility both approached 100 μg/L. After pump-and-treat groundwater
Pleasant Garden PCENCN 000 404 797
Site ReassessmentPage 9 of 13
remediation, available documents document semi-annual groundwater monitoring
well sampling events from March 2010 through September 2013. During the 2013
event, 16 on-site monitoring and recovery wells were sampled. Maximum PCE
concentration (at 7.5 μg/L) exceeded its MCL at one location, and PCE
concentration exceeded the NCAC 2L standard (of 0.7 μg/L) at 2 locations. TCE
was non-detect in all samples. An adjacent domestic well to the west, which was
equipped with a POE filtration system, was also sampled intermittently during the
process, but its PCE concentration never exceeded approximately 1 μg/L (Refs. 7,
25).
4.3.5 EPA SESD Potable Well Sampling Events:
In January and February 2012, the EPA SESD sampled 33 domestic and
commercial wells between 4125 to 4834 Pleasant Garden Road and at residences on
adjoining streets. The supply well for a diesel repair facility at 4704 Pleasant Garden
Road contained PCE at 1 μg/L). No cVOCs were detected in the thirteen wells
sampled to the north. To the proximal south, wells at 4705, 4708 and 4713 Pleasant
Garden Road contained PCE below the MCL, and a well at 4718 Pleasant Garden
Road contained PCE (5.7 μg/L,) above the MCL. To the south of 4730 Pleasant
Garden Road, PCE and TCE concentrations in groundwater samples collected along
Pleasant Garden Road, Forest Acres Circle, Laurel Knoll Drive and additional side
streets were either non-detect or less than the MCLs (Ref. 16; Figure 2; Table 1).
4.3.6 NC Superfund Section SI and Supplemental SI Sampling:
The NC Superfund Section conducted the SI sampling event on March 25
and 26, 2013 and the Supplemental SI sampling event on May 20, 2014. The SI
sampling event consisted of sampling 25 domestic and commercial water-supply
wells within an interval spanning 4704 and 4814 Pleasant Garden Road, along Forest
Acres Circle and Laurel Knoll Drive, and selected wells on adjoining streets. Sample
analysis by select ion monitoring (SIM) detected PCE in 25 well samples, and TCE
in fourteen well samples. PCE exceeded the 5 μg/L MCL at 4712 Pleasant Garden
Road (33 μg/L), and (pre-filtration) at 4730 Pleasant Garden Road (150 to 160 μg/L)
and (pre-filtration) 4710 Pleasant Garden Road (23 μg/L). The remaining detected
PCE concentrations were less than the MCL, including pre-filtration at 4805 Pleasant
Garden Road. TCE was detected at fourteen sample locations, but twelve of the
results were less than 1 μg/L, and the remaining two were less than the 5 μg/L MCL.
A low (0.58-0.59 μg/L) concentration of cis-1,2-DCE was present in the sample from
4730 Pleasant Garden Road. No vinyl chloride or TCA was detected in the SI
samples. Post-filtration samples from all POE-filter-equipped production wells were
non-detect for VOCs (Refs. 19, 20) . No additional groundwater sampling was
conducted as part of the current SRA.
4.4 Groundwater Conclusions:
Based on information reviewed during the SRA, groundwater contamination
at the site continues to be addressed under State regulatory authority. The exception
Pleasant Garden PCENCN 000 404 797Site Reassessment
Page 10 of 13
is the most highly PCE-contaminated site well at 4730 Pleasant Garden Road.
Routine maintenance of this well’s POE filtration system, as originally agreed by the
property owner, could not be confirmed at the time of the current SRA. This well has
therefore been brought to IHSB attention for future sampling/evaluation of its
filtration system and a health risk evaluation (HRE) for potential (non-drinking)
exposure to commercial tenants. During a HRE, a DEQ toxicologist reviews the
analytical data, compares it to state and federal exposure standards, and issues a letter
advising whether any restrictions are indicated for use of the water source. The HRE
is then forwarded by the sampler to the property owner (Refs. 35, 36).
5.0 SURFACE WATER PATHWAY
5.1 Hydrologic Setting:
The site is located on a drainage divide between the Deep River basin to the
southwest and the Haw River basin to the northeast. Southwest of the site and
Hanson Brick, surface runoff flows to an unnamed, 3-mile long tributary of Polecat
Creek. The 15-mile Target Distance Limit (TDL) for this surface water pathway
branch is located on Polecat Creek a short distance upstream from the Deep River.
Surface runoff north of the site flows to Little Alamance Creek, which constitutes a
second 15-mile TDL. The third 15-mile pathway TDL, east of the site, is composed
of an unnamed 3-mile tributary and twelve miles of Big Alamance Creek. The Haw
River itself is located downstream from both the Little Alamance and Big Alamance
TDLs (Ref. 33).
5.2 Surface Water Targets:
No public surface-water intakes are located within the three 15-mile TDLs
(Ref. 32). The nearest likely fisheries are in named surface-water bodies, each of
which is located three or more miles downstream from the site. The nearest mapped
wetlands are located approximately 1.5 miles downstream from the site on the
unnamed tributaries to Polecat Creek and Little Alamance Creek (Ref. 33). The
nearest US or NC Threatened/Endangered species occurrence was identified near the
Highway 62 crossing of Polecat Creek, approximately 4 miles downstream from the
site, during the SI.
5.3 Surface Water Pathway Sampling and Results:
No surface water pathway sampling was conducted during the SI, the SSI or
the current SRA.
5.4 Surface Water Pathway Conclusions:
Based on information reviewed during the SRA the surface water migration
pathway is of minimal concern at this time.
Pleasant Garden PCE
NCN 000 404 797Site ReassessmentPage 11 of 13
6.0 SOIL EXPOSURE AND SUBSURFACE INTRUSION
PATHWAY
6.1 Land Use:
Land use at the site and vicinity is mixed commercial and residential. Soil
sampling conducted to date has not documented contamination in surface soils.
Therefore, the soil exposure component is not of concern for the site. Subsurface
contamination mainly in underlying groundwater is present, which might be of
concern for subsurface intrusion.
6.2 Subsurface Intrusion Targets:
Residences and commercial facilities are located within 200 feet of suspected
historical contaminant source(s). No schools or day care facilities exist in proximity
to the site. No surface soil contamination is known to exist at the site. However,
inhabited structures overlying areas of contaminated groundwater are potential
targets for subsurface intrusion by cVOCs. (Ref. 3).
During the 2013 SI, groundwater contamination by PCE and/or TCE was
detected at 25 residential and commercial properties. During SI and subsequent state
sampling events, groundwater PCE concentrations have exceeded applicable
residential or commercial Target Groundwater Vapor Intrusion Screening Levels
(VISLs) of 5.76 μg/L and 17.5 μg/L at 3 residential and 2 commercial properties. SI
groundwater sample TCE concentrations exceeded applicable residential or
commercial Target Groundwater VISLs of 0.518 μg/L and 0.816 μg/L at 2 residential
and 2 commercial properties.
6.3 Subsurface Intrusion Sampling and Results:
On May 15, 2013, the NC Superfund Section attempted PID soil gas
screening at the former Hanson Brick plant and near the contaminated supply well
west of the strip mall at 4730 Pleasant Garden Road. Each attempted screening
location at Hanson Brick was underlain by highly compacted gravel-aggregate fill,
which prevented subsurface soil penetration at most points (Ref. 10) (see Figure 2).
Behind 4730 Pleasant Garden Road (at 1201 Forest Acres Circle), water-
saturated soil conditions were unexpectedly encountered over a large portion of the
property, possibly due to heavy water discharge through the neighboring strip mall’s
septic leach field. NC Superfund Section personnel completed three soil gas
screening probes, each at a 4-foot depth, in a general north-south line within the
central portion of the parcel. Soil gas PID readings were, from north to south: 1.71;
16 to 8; and 0.65 meter units, respectively (Ref. 10) (see Figure 2). The PID
detections indicated the possibility of soil gas contamination, but (the instrument
being calibrated to isobutylene) were qualitative, non-substance-specific, and
therefore inconclusive.
Pleasant Garden PCENCN 000 404 797Site Reassessment
Page 12 of 13
n December 2016, a contractor for the NC IHSB conducted a limited soil gas
investigation at the site. The contractor installed three soil gas probes to 8 feet bgs
at 4710, 4712 and 4730 Pleasant Garden Road, between residences and businesses
and the two most highly contaminated water-supply wells at the site. Sampling was
conducted using Summa Canisters after helium-shroud leak-testing was completed.
PCE was detected at 28.7 micrograms per cubic meter (μg/m3) in the soil gas sample
(SG-3) collected behind 4730 Pleasant Garden Road. The PCE concentration did not
exceed the EPA Target Sub-Slab/Near-Source residential and commercial Vapor
Intrusion Screening Levels of 139 μg/m3 and 584 μg/m3, respectively). No VOCs
were detected at the other two soil gas sample locations (Refs. 26, 27) (see Figure
3).
6.4 Soil Exposure and Subsurface Intrusion Pathway Conclusions:
Based on the file review, current site conditions, and results of previous
groundwater investigations, the subsurface intrusion component of the soil exposure
and subsurface intrusion pathway is of some concern at this site.
7.0 SUMMARY AND CONCLUSIONS
During the SRA, post-SI groundwater and soil gas sampling results from
recent, on-going state-led investigations were reviewed and compared to historical
and SI sampling results, to further evaluate the likelihood of exposure of nearby
residents to site contaminants.
The site continues to be addressed under the NC Superfund Inactive
Hazardous Sites program, which has conducted water-supply well sampling at three-
year intervals at residences near the PCE contaminant plume which apparently
originated at/near 4730 Pleasant Garden Road. The IHSB also (under State funding)
currently maintains a (EPA-installed) residential POE filtration system, and has
installed (and will maintain) protective POE filtration systems at additional
residences where groundwater PCE concentrations have recently increased and
exceeded the MCL. To date, the only water-supply well whose filtration status is
uncertain, and that is potentially used for drinking, is the commercial well supplying
4730 Pleasant Garden Road. However, the commercial tenants there reportedly use
the water only for non-consumptive purposes, based on common knowledge of the
existing groundwater contamination. The NC Superfund IHSB has also been
requested to further evaluate the protectiveness of the well’s existing filtration
system for non-drinking use.
Although PCE and TCE groundwater concentrations have exceeded
applicable Target Groundwater VISLs, results of recent soil gas sampling at the
properties with the highest concentrations of groundwater contamination did not
indicate a subsurface intrusion hazard at those properties. Based on the SRA
findings, the site is being addressed with the IHSB as an other cleanup authority
(OCA) and the NC Superfund Section does not recommend this site for further
investigation under CERCLA.
Pleasant Garden PCENCN 000 404 797
Site ReassessmentPage 13 of 13

Pleasant Garden PCE
NCN 000 404 797
Site Re-assessment References
October 2023

1) United States Environmental Protection Agency (EPA) 40 Code of Federal
Regulations – Part 300, Hazard Ranking System, July 1, 2019, available on-
line at: https://semspub.epa.gov/work/HQ/100002489.pdf.

2) Parker, Stuart F., North Carolina Department of Environment and Natural
Resources (NCDENR), Superfund Section, Latitude and Longitude Calculation
Worksheet and Site Location Map, November 20, 2012.

3) Guilford County, NC Geographic Information Service (GIS):
https://gisdv.guilfordcountync.gov/guilford/ Reviewed August
2023.

4) Google Maps, Pleasant Garden, NC: Aerial Maps and Imagery:
https://www.google.com/maps.

5) Google Earth Pro Aerial Imagery. September 21, 2020.

6) URS Corporation: Additional 1% Assessment Report Submittal,
Pleasant Garden Cleaners DSCA Site ID #41-0037, November 17,
2010.

7) Mountain Environmental Group: “Semi-Annual Groundwater
Monitoring Report for the Former Hooker Furniture Site, 1212
Thrower Road, Pleasant Garden, Guilford County, North Carolina.”
October 23, 2013.

8) NC DENR Superfund Section: Electronic Correspondence with
EPA Region 4 and Guilford County, NC. February 8 to 9, 2012.

9) Parker, Stuart F., NC DENR Superfund Section: Site Inspection
Sampling Field Notes. March 25 to 26, 2013.

10) Parker, Stuart F., NC DENR Superfund Section: Memorandum and
Attached Field Notes RE: Site Inspection Soil Vapor Survey
Efforts. May 15 to 16, 2013.

11) Garvey, Jack, Environmental Manager, Hanson Brick Pleasant Garden, Hanson
Brick PG #1 Manufacturing Building Layout, map dated February 16, 2007,
and annotated.

12) Lepard, Mindy, Guilford County Health Department, e-mail message to
Kenneth Rhame w/attached sample results table. February 9, 2012.

13) Guilford County Health Dept Draft Sampling Summary, Electronic Mail
Attachment on December 20, 2012.

14) S&ME, Inc., “Limited Soil and Groundwater Assessment Report, Pleasant
Garden Road Site, 4808 Pleasant Garden Road”. Orphan Priority Site Contract
#N10005S, S&ME Project No. 1054-11-2012. Prepared for NC Dept. of
Environment and Natural Resources Superfund Inactive Hazardous Sites
Branch. August 22, 2011.

15) Rhame, Kenneth, US EPA Region 4 Emergency Response and Removal
Branch, Pollution/ Situation Report (POLREP) # 1, Initial and Final,
Pleasant Garden PCE, Pleasant Garden, NC, November 22 through
August 13, 2013.

16) US EPA Region 4 Science and Ecosystem Support Division:
“Report on the Pleasant Garden Road PCE Site Potable Well
Sampling”. January 2012.

17) Parker, Stuart F., North Carolina Superfund Section: “Pre-
CERCLIS Screening Assessment Report, March 6, 2013.

18) Parker, Stuart F., North Carolina Superfund Section: “Abbreviated
Preliminary Assessment (PA) Checklist”, March 7, 2013.

19) Parker, Stuart F., North Carolina Superfund Section: Site Inspection
Report, Pleasant Garden PCE Site, NCN 000 410 797, Pleasant
Garden, Guilford County, NC. September 23, 2013.

20) Parker, Stuart F., North Carolina Superfund Section: Site Inspection
Report, Pleasant Garden PCE Site, NCN 000 410 797, Pleasant
Garden, Guilford County, NC. September 12, 2014.

21) NC DEQ Superfund Section, Inactive Hazardous Sites Branch
(IHSB): Correspondence Re: Water-Supply Well Sampling Results,
Pleasant Garden PCE Site, July 2022.

22) Pace Analytical Laboratory: Sample Analytical Report for 4713
Pleasant Garden Road, Pleasant Garden, NC. August 9, 2022.

23) Ghiold, Sharon, NCDENR Underground Storage Tank Program:
Electronic Correspondence with NCDENR Superfund Section
IHSB Re: 4705 Pleasant Garden Road. November 30 to December
1, 2022.

24) WithersRavenal, Cary, NC: “Groundwater Monitoring Report,
Pleasant Garden Curb Market, NCDEQ Incident # 9151, UST #
WS-3159, Facility ID # 00-0-0000030234, 4700 Pleasant Garden
Road, Pleasant Garden, Guilford County, North Carolina,
WithersRavenal Project No. 02173214-04. November 30, 2022.

25) Mountain Environmental Group, Canton, NC: “IHSB Remedial
Investigation Plan for the Former Hooker Furniture Site, 1212 Thrower
Road, Pleasant Garden, North Carolina, Guilford County”, IHSB ID
No. NCD048401087. May 17, 2010

26) S&ME, Inc., “Soil Gas Assessment, Pleasant Garden Road PCE Site, Pleasant
Garden, Guilford County, North Carolina”, Site ID NCN000410797, S&ME
Project No. 4305-16-109. March 10, 2017.

27) US EPA Vapor Intrusion Screening Level Calculator Output. October 10,
2023.
https://epa-visl.ornl.gov/cgi-bin/visl_search

28) Heath, Ralph, Basic Elements of Groundwater Hydrology with Reference to Conditions
in North Carolina, Parts I-II, US Geological Survey Water Resources Investigations
Open-File Report 80-44, 1980.

29) Carpenter, P. Albert III: Geologic Map of Region G, North
Carolina, 1982.

30) Parker, Stuart F, NC Superfund Section, Memorandum to File: Potential
Groundwater Population Count. September 26, 2023.

31) US Census Bureau Quickfacts:
https://www.census.gov/quickfacts/fact/table/guilfordcountynorthcarolina.ple
asantgardentownnorthcarolina.US/POP010220.

32) NC DEQ Superfund Section IHSB Map Viewer:
https://www.fws.gov/wetlands/data/mapper.html

33) US Fish and Wildlife Service, National Wetlands Inventory On-line Mapper:
Printout (annotated) Reviewed August 17, 2023.
http://wetlandsfws.er.usgs.gov/

34) City of Greensboro Policy Water & Sewer Services ‘Outside the Corporate
Limits’ . April 3, 2012.

35) Parker, Stuart F, NC Superfund Section, Memorandum to File: Status of
Pleasant Garden Road Groundwater Wells. September 27, 2033; Attached e-

mail to [e-mail] and [e-mail].
September 14, 2023.

36) Parker, Stuart F, NC Superfund Section: Electronic Communication with
Vincent Antrilli, NC Superfund Section Inactive Hazardous Sites Branch,
October 9, 2023.

TABLES
Pleasant Garden PCE Site
NCN 000 410 797
Recent Groundwater Sample PCE Results (ug/L)
UST Well Address Sampling Date PCE (ug/L)Property Use Notes:
SW-3 4621 PGR 5/15/2018 - -Residential
SW-1 4700/4704 10/4/2022 - -Commercial UST Monitored Natural Attenuation Site
SW-2 4701 PGR 10/4/2022 - -Residential
SW-5 4705 PGR 11/15/2022 5.82 Residential 4.0 PCE in 5/2022; IHSB Installed POE Filtration (2022)
SW-7 4707 PGR 5/17/2022 1.6 H; 2.4 B Residential 3.8 PCE in 6/2019
SW-4 4708 PGR 6/25/2019 2 Residential
SW-6 4710 PGR (pre)5/26/2022 19 Residential IHSB Maintains (EPA-installed) POE Filtration
4710 PGR (post)5/26/2022 - -
(SW-8)4711 PGR 10/20/2011 1.1 Residential
(SW-13)4712 PGR 3/25/2013 33 Commercial Auto Shop: No POE Filter Installed
SW-30 4713 PGR 5/17/2022 5.5 H; 6.6 B Residential
4713 PGR (pre)8/5/2022 38.2 IHSB Installed POE Filtration 08/2022
4713 PGR (mid)" - -
4713 PGR (post)" - -
(SW-9)4715 PGR 6/19/2019 - -
SW-11 4717 PGR 5/17/2022 - - H ; 0.62 B Residential ND on 6/19/2019
SW-12 4718 PGR 5/20/2014 0.41/0.40 Commercial 5.7 PCE (1/14/2012); No Filter Installed
(SW-10)4719/4721 PGR Commercial
(SW-29)4730 PGR (Pre)3/25/2013 160 Commercial Strip Mall: EPA installed POE Filtration; 1.2 TCE prefilter.
4730 PGR (Post)5/20/2014 2.7 Owner notified to maintain (2014).
SW-26 4802/4800 PGR 5/17/2022 - - ; 1.1 B Residential
4805 PGR (post)6/19/2019 - -Residential 3.6 PCE pre-filtration on 3/25/2013
4804/4806 PGR 5/17/2022 0.81; 1.5 B Residential
4809 PGR 6/19/2019 - -Residential
(SW-27)1202 FAC 5/17/2022 Residential 0.72 J PCE (2012)
(SW-28)1204 FAC 5/17/2022 Residential 2.4 PCE (2014)
1206 FAC 6/19/2019 - -Residential 0.61 PCE; 0.3 TCE (2013)
1210 FAC 5/17/2022 Residential 0.74 J PCE (2011)
SW-14 1325 FAC 5/17/2022 - - H; 0.86 B Residential 1 block East of Pleasant Garden Road
SW-15 1327 FAC 5/17/2022 - - H; 0.85B Residential "
SW-16 1329 FAC 5/17/2022 - - H; 0.78 B Residential "
SW-17 1337 FAC 5/17/2022 - - H; 0.61 B Residential "
Access not granted PGR = Pleasant Garden Road
MCL exceeded FAC = Forest Acres Circle
H = Analysis outside Holding Time
B = Compounds detected in Blank
2017 soil gas survey (3 points) detected 28.7 ug/m3 directly behind 4730 strip mall
Sources:
1) Withers-Ravenal groundwater monitoring report 12/01/2022
2) IHSB correspondence file with Health Risk Evaluation letters to well owners (2022)
BAF UST
SW Address May-22 Oct-Nov-2022
1 4700/4704 Y Y
2 4701 Y Y
3 4621 Y
4 4708
5 4705 Y Y
6 4710 Y
7 4707 Y
13 4712
8 4711
30 4713 Y
9 4715
12 4718
11 4717 Y
10 4719/4721
29 4739
26 4800/4802 Y
28 1204
27 1202
14 1325 Y
15 1327 Y
16 1329 Y
17 1337 Y

FIGURES

D
#7
#7
#7
#7
#7
#
#7
#7
#7
##
#7
#7
#7
#7
#
##
#
#
#
#
#
#
#
#
##
#
##
##
#
#
##
#7
#
##
#
#
###
#
#
#
#
#
#
#
#0
#0
#0
#0
#0
#7#7
##
#7
#7
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#7
#7
#7
!(
!(
4 Mi
l
e
3 Mile 2 Mile1 Mile
1/2 Mile
Source: Base Map by ESRI; Site Location, NC Div of Waste Management; Water Sources and Wells, NC Div Public Water Supply
PLEASANT GARDENPCE SITE4-MILE RADIUS
1
NCN 000 410 797
Pleasant Garden, NC
Guilford
SMM
Fig:
Site:
City
County:
Date:
Drawn By:
1 inch = 5,000 feet
1 0 10.5
Miles
World Geographic System 1984
²D
08/01/2013
Public Water Supply Water Source
#Community
#7 Non-Transient Non-Community
#0 Adjacent
D Site Location
Streams & Rivers
Water Bodies
!(NC End./Threatened Plant Sp
!(NC End./Threatened Animal Sp
!(Federal End./Threatened Plant Sp
!(Federal End./Threatened Animal Sp
Pleasant Garden PCE site
Pleasant Garden, Guilford County, NC
EPA ID #: NCN 000 410 797
Adapted from: Guilford County , NC
Geographic Information Systems
FIGURE 2:
Site Layout Map
Date:
09/04/2013
SCALE:
As Shown
4700
4718:
4730:
4801
4814
1415
4815
4817
4819
1303
1305
1306 1308 1312
1321
1325
4824
4833
4834
Hooker
Furniture
Site
Hanson Brick
Manufacturing
Plant
1201/1205
1202-1206
5906
5908
6105
5905
1207 1211
1221
5901
5701
5704
5711
5911
5919
6017
6022
SV
SV
SV
SV = Soil Gas PDF Screen (2013)
= Shared Domestic Well
Former
Drycleaners
Diesel
Repair
Auto
Repair
GRAPHIC SCALE
100 50
SCALE: 1" = 100'
SCALE: AS SHOWN
DATE: JAN. 2017
DRAWN BY: ROM
PROJECT NO: 4305-16-109
100
LEGEND @ -WATER SUPPLY WELL
0 -SOIL VAPOR SAMPLE LOCATION
ug/m3 -MICROGRAMS PER CUBIC METER
<0.793 28.7 <1.07
<0.511
SOIL GAS SAMPLES COLLECTED ON DECEMBER 5, 2016. SOURCE: NCONEMAP (2014) ♦S&ME
WWW.SM El NC.COM
FIGURE NO. SOIL VAPOR SAMPLE LOCATION MAP
PLEASANT GARDEN PCE (#NCN000410797) 34710, 4712 & 4730 PLEASANT GARDEN ROAD
PLEASANT GARDEN, NORTH CAROLINA
4710
4712
4730