MO-4561_15257_CA_MRP_20230905

SUBSEQUENT MONITORING REPORT
B.J.’S CHEVRON/MCDANIEL’S CONSTRUCTION (INCIDENT NO. 15257)
4128 KINGS MOUNTAIN HIGHWAY
GASTONIA, GASTON COUNTY, NORTH CAROLINA
ESP PROJECT NO. 23-00200-063
Prepared For:
North Carolina Department of Environmental Quality
Division of Waste Management – UST Section
1646 Mail Service Center
Raleigh, North Carolina 27699-1646
Prepared By:
ESP Associates, Inc.
P. O. Box 7030
Charlotte, North Carolina 28241
September 5, 2023

ESP Associates, Inc.
P.O. Box 7030 • Charlotte, NC 28241
1.800.960.7317 • NC: 704.583.4949, fax [phone] • SC: 803.802.2440, fax [phone]
www.espassociates.com
September 5, 2023

Mr. Scott Ryals
North Carolina Department of Environmental Quality
Division of Waste Management
1646 Mail Service Center
Raleigh, North Carolina 27699-1646

Email: [e-mail]

Reference: SUBSEQUENT MONITORING REPORT
B.J.’s Chevron/McDaniel’s Construction (Incident #15257)
4128 Kings Mountain Highway
Bessemer City, Gaston County, North Carolina
ESP Project No. 23-00200-063

Dear Mr. Ryals:

ESP Associates, Inc. (ESP) is pleased to present this Subsequent Monitoring Report documenting
activities performed at the subject site, B.J.’s Chevron/McDaniel’s Construction, in accordance with
North Carolina Department of Environmental Quality (NCDEQ), Task Authorization No. 1,
approved on May 17, 2023. The subject site is located at 4128 Kings Mountain Highway in Bessemer
City, North Carolina.

We appreciate the opportunity to provide environmental services on this project. If you should have
any questions, please do not hesitate to contact us at [phone].

Sincerely,
ESP Associates, Inc.
Matthew R. Craig Nora A. Zirps, PE, RSM
Project Manager Senior Project Engineer

Attachment – Subsequent Monitoring Report

TABLE OF CONTENTS

Section Page

SITE INFORMATION ..................................................................................................................... i

EXECUTIVE SUMMARY ............................................................................................................. iii

1.0 INTRODUCTION ............................................................................................................... 1
1.1 SITE SETTING ........................................................................................................... 1
1.2 SITE GEOLOGY AND HYDROGEOLOGY ................................................................. 1
1.3 SURFACE WATER ..................................................................................................... 2
1.4 WATER SUPPLY WELLS ........................................................................................... 2

2.0 SITE HISTORY .................................................................................................................. 4

3.0 FIELD ACTIVITIES ........................................................................................................... 7
3.1 WATER LEVEL GAUGING ........................................................................................ 7
3.2 GROUNDWATER SAMPLING ................................................................................... 8
3.3 WATER SUPPLY WELL SAMPLING ......................................................................... 8
3.4 FIELD QUALITY CONTROL SAMPLING AND ANALYSIS ....................................... 8

4.0 ANALYTICAL RESULTS .................................................................................................. 9

5.0 CONCLUSIONS AND RECOMMENDATIONS ............................................................... 10

6.0 REFERENCES ................................................................................................................. 11

FIGURES
Figure 1 USGS Topographic Site Location Map
Figure 2 Site Map
Figure 3 Groundwater Elevation Map
Figure 4 Groundwater Results Map
Figure 5 Water Supply Well Radius Map

TABLES
Table 1 Water Supply Well Information
Table 2 Monitoring Well Construction and Groundwater Elevation Data
Table 3 Summary of Groundwater Analytical Results

APPENDICES
Appendix A Tables of Previous Groundwater Elevations and Analytical Results
Appendix B Field Documentation and Photographs
Appendix C Laboratory Data Report
Subsequent Monitoring Report ESP Project No. 23-00200-063
B.J.’s Chevron/McDaniel’s Construction (Incident #15257) September 5, 2023

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SITE INFORMATION

Date of Report: September 5, 2023
NCDEQ Incident No: 15257
NCDEQ UST No.: MO-4561
Facility ID: 00-0-0000028002
Site Name: B.J.’s Chevron/McDaniel’s Construction
Site Location: 4128 Kings Mountain Highway
Bessemer City, Gaston County, North Carolina 28016

Latitude: N 35.255827
Longitude: W 81.266622 

UST Owner/ Operator: Unknown

Current Property
Owner: John & Angel Riggan
544 Diamond T Road
Gastonia, North Carolina 28052

Current Property
Occupant: Unmarked automobile salvage lot

Consultant: ESP Associates, Inc.
P.O. Box 7030
Charlotte, North Carolina 28241
[phone]

Laboratory: Pace Analytical Services, LLC
NCDEQ No. 5342
9800 Kincey Avenue
Huntersville, North Carolina 28028
[phone]

Release Information: Release Discovery Date: August 1998
Estimate Quantity: Unknown
Cause of Release: Former UST Systems
Source of Release: Former UST Systems
Currently Active Tanks: None.
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I, Nora A. Zirps, a Professional Engineer for ESP Associates, Inc., do certify that the information
contained in this report is correct and accurate to the best of my knowledge.

ESP Associates, Inc. is licensed to practice both geology and engineering in North Carolina. ESP
Associates, Inc.’s certification numbers are: Geology: C-556 / Engineering: F-1407
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EXECUTIVE SUMMARY

This executive summary section provides an abbreviated reporting of our Site observations and
findings. Refer to the main text and appendices for a complete reporting of our observations and
findings.

ESP Associates, Inc. (ESP) has completed a Subsequent Monitoring Report documenting
assessment activity performed at the B.J.’s Chevron/McDaniel’s Construction site (Incident No.
15257). The site is a developed commercial site (Tax Parcel ID 153672) located at 4128 Kings
Mountain Highway, Bessemer City, Gaston County, North Carolina. This report was completed to
summarize the findings of assessment activities performed on July, 19, 2023, in accordance with
North Carolina Department of Environmental Quality (NCDEQ), Task Authorization No. 1, approved
on May 17, 2023.

The work was performed as part of the State Lead Contract #N70522-D between NCDEQ and ESP.
This report was prepared in general accordance with the 15A NCAC 2L .0115 regulations and the
NCDEQ Underground Storage Tank (UST) Section Guidelines for Assessment and Corrective Action
for UST Releases, January 2021, under the supervision of Nora A. Zirps, North Carolina registered
professional engineer (North Carolina License No. 023838).

On July 19, 2023, ESP performed the following field activities:
 Gauged the static water level in monitoring well MW-4. Although planned, ESP was
unable to gauge MW-1 through MW-3 because access to these wells was obstructed by
cars that were inoperable.
 Although planned, ESP was unable to redevelop MW-2 to reduce sediment by hand bailing
because access to this well was obstructed by cars that were inoperable.
 Collected a groundwater sample (and field duplicate) from monitoring well MW-4.
Although planned, ESP was unable to sample MW-1 through MW-3 because access to
these wells was obstructed by cars that were inoperable.
 Obtained an access agreement to sample water supply well (WSW) WSW-7.
 Collected groundwater samples from WSW-3 and WSW-7. Although planned, a sample
could not be obtained from WSW-6 because permission was not granted to access the
property to sample this off-site WSW, and the WSW was reported by the owner to be
inactive.
 Removed the old RemRx™ CRP Persulfate sleeve from MW-4, and replaced it with an
oxygen release compound (ORC) sleeve. Although planned, ESP was unable to replace the
sleeves in MW-1 through MW-3 because access to these wells was obstructed by cars that
were inoperable.
 Performed an updated receptor survey.

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Collected water samples were analyzed for volatile organic compounds (VOCs) for comparison to
both North Carolina Groundwater Quality Standards 15A NCAC 2L .0202 (2L Standards) and Gross
Contaminant Levels (GCLs).

Results of the July 19, 2023, assessment activities along with previous reporting revealed the
following:
 Based on the updated receptor survey, there are 26 WSWs within a 1,000-ft radius of the
source area, and municipal water is not available within a 1,000-ft radius of the source area.
Seventeen WSWs are located within a 500-ft radius of the source area, but only WSW-6
(reported by the owner to be inactive) and WSW-21 are located downgradient of the source
area based on ground surface topography and historic groundwater elevations.
 The static water level depth at MW-4 (the only monitoring well gauged as a result of
inoperable cars obstructing access to the other wells) was 16.00 ft bTOC.
 The general direction of groundwater flow beneath the site is to the south-southwest.
 No analytes were detected above their respective GCLs in MW-4; however, benzene,
1,2-dichloroethane, and naphthalene were detected above their respective 2L Standards in
MW-4. The general trend in groundwater contaminant concentrations in MW-4 has been
relatively stable with slight fluctuations since 2019.
 No analytes were detected above method detection limits in WSW-3 or WSW-7.

Based on the above results, ESP offers the following recommendations:
 Attempt to obtain a WSW sampling agreement from the owner of WSW-21 so that it can
be sampled during the next monitoring event along with WSW-3.
 Continue to sample site monitoring wells on a semiannual basis to understand
concentration trends and plume stability. Attempt to contact property owner ahead of time
to get vehicles moved off of previously inaccessible monitoring wells.
 Replace RemRx™ CRP Persulfate sleeves in MW-1, MW-2, and MW-3 with ORC sleeves
and change out the ORC sleeve in MW-4 during the next semiannual monitoring event.

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INTRODUCTION

1.1 Site Setting

The B.J.’s Chevron/McDaniel’s Construction site is an approximately 0.38-acre developed
commercial site (Tax Parcel ID. 153672) located at 1428 Kings Mountain Highway in Bessemer City,
Gaston County, North Carolina (see Figures 1 and 2). The site is presently occupied by an unmarked
automobile salvage shop that operates within the 2,248 sq ft building on site. A shed with a water
supply well exists along the site’s northeastern boundary; however, the shed itself was inaccessible at
the time of the field effort. The site is bound to the north by commercial warehouses, to the west by
Gamble Loop Road and beyond by Staley Racing Engines and Automotive Machine Shop, to the
south by Kings Mountain Highway and beyond by BC Paint and Customs, and to the east by Acorn
Prints Custom Screen Prints.

1.2 Site Geology and Hydrogeology

Consideration of surface and subsurface drainage and geology are of interest since they provide
an indication of the direction that contamination, if present on-site or off-site, could be transported.

The site is located within the Kings Mountain Belt of 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.
Rock at the site is described as Metamorphosed Quartz Diorite - foliated to massive. In-place
chemical and physical weathering of parent rocks typically form 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 rock is not sharply
defined. This transitional zone is termed “partially weathered rock” or saprolite. Information
obtained from the Web Soil Survey for Gaston County depicts soils on the site as Urban land (Ur).

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.

The direction and movement of groundwater through soil is generally dependent on soil type, the
presence of relict structures, and the textures of the underlying rock. Fractures, faults, folds, and
foliation planes affect the migration of groundwater in rock. No major geologic features (faults,
etc.) are present at or near the site. Groundwater typically flows in directions parallel to the ground
surface and under the influence of gravity migrates to discharge points such as surface water
features, 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.
Normally, the highest levels of the water table occur in late winter and spring and the lowest levels
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occur in the late summer and fall. Based on historical data and July 19, 2023, water level
measurements, groundwater at the site is expected to flow generally to the south-southwest.

1.3 Surface Water

During the receptor survey conducted on July 19, 2023, several surface water features were identified
between 1,000 and 1,500 feet (ft) of the site. Three ponds, which are connected by an unnamed
tributary of Crowders Creek were identified approximately 1,200 ft northeast of the site. Abernethy
Creek, a tributary of Crowders Creek, was identified approximately 1,200 ft west of the site.
Crowders Creek was identified approximately 1,200 ft south of the site. Surface water features are
depicted on Figures 1 and 5.

1.4 Water Supply Wells

ESP Associates, Inc. (ESP) performed an updated receptor survey to identify water supply wells
(WSWs) and surface water bodies within 1,000 ft of the site. The updated receptor survey for the
site involved the following:
 Downloading parcel addresses and ownership information for properties within 1,000 ft of
the source area (underground storage tank [UST] basin) from the Gaston County
geographic information system (GIS);
 Performing visual observation of each identified property within 1,000 ft of the source area
from public roadways on July 19, 2023, to document visible presence of either a municipal
water meter or a private WSW;
 Knocking on doors of properties within 500 ft of the source area on July 19, 2023, to
interview property owners regarding presence and use of private WSWs;
 Leaving WSW survey forms in mailboxes of properties within 500 ft of the source area on
July 19, 2023, for properties where owner/tenant was not present;
 Contacting representatives of Gaston County and Bessemer City regarding the availability
of municipal water within 1,000 ft of the site; and
 Making visual observations of surface water bodies within 1,000 feet of the site.
Documentation associated with the WSW survey is provided in Appendix B.
A total of 38 properties were identified within 1,000 ft of the site. During the receptor survey, the
38 properties were visually checked for municipal water meters, which were not found on any of
the properties. Communication with representatives of Gaston County and Bessemer City
confirmed that municipal water is not available to properties within 1,000 ft of the site. Therefore,
it has been assumed that each of the 38 properties that have structures within 1,000 ft of the site
(based on review of aerial photographs) also have a WSW used for potable water. Many of the
property owners were not present, would not disclose information, or would not allow access to
their properties during the July 19, 2023, receptor survey. WSWs within 1,000 ft of the source
area are documented in Table 1 and shown on Figure 5. There are 26 WSWs within a 1,000-ft
radius of the source area. Seventeen of the WSWs are located within a 500-ft radius of the source
area. Based on ground surface topography and historic groundwater elevations, the groundwater
flow direction beneath the site is estimated to be south-southwest. The groundwater flow direction
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could not be confirmed during the July 19, 2023, sampling event as only one monitoring well was
accessible at the time of gauging. Based on the estimated groundwater flow direction, two of the
WSWs within a 500-ft radius of the source area (i.e., WSW-6 and WSW-21) appear to be
downgradient of the source area. When contacted to request access to collect a sample, the owner
of WSW-6 stated that the property is abandoned, and the well is inactive. Visual observation of
the property during the receptor survey confirmed its status as abandoned.

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2.0 SITE HISTORY

The following description of historical site activities was obtained from a report titled “Subsequent
Monitoring Report, B.J.’s Chevron/McDaniel’s Construction (Incident #15257), 4128 Kings
Mountain Highway, Bessemer City, Gaston County, North Carolina” dated February 4, 2022, by
Terracon Consultants Inc. (Terracon).
 In May 1995, two 1,000-gallon USTs and one 550-gallon diesel UST were reportedly
removed from the site. During the tank removal activities, a photoionization detector (PID)
was used to determine if the soils removed from the excavation were impacted. As a result
of screening the soils, approximately 15 cubic yards of petroleum-impacted soils were
removed from the site. Soil sampling conducted during closure activities indicated a
petroleum release from beneath each of the USTs.
 An additional four USTs were removed from the site in 1998 by the property owner. The
tanks removed in 1998 included three 1,000-gallon gasoline USTs and one 1,000-gallon
kerosene UST. Petroleum constituents were detected in soil samples obtained beneath the
former kerosene tank; however, constituent concentrations were reportedly below applicable
action limits. It is noted in the 1998 closure report, prepared by Southeastern Geological
Services, Inc., that closure sampling was conducted by the property owner after fill materials
were placed in the former tank basin.
 Four groundwater monitoring wells (MW-1 through MW-4) were installed on the site
between December 2004 and February 2006 to assess impacts to groundwater as a result of
petroleum constituents detected in nearby WSWs by Marshall Miller & Associates in
November 2001. Groundwater samples collected from the monitoring wells indicated
various petroleum constituents were present above their respective North Carolina
Groundwater Quality Standards 15A NCAC 2L .0202 (2L Standards). A 96-hour Mobile
Multi-Phase Extraction (MMPE) event was completed on the site by Geological Resources,
Inc. in March 2006. Approximately 2,135 gallons of liquid were removed during the MMPE
event, and no free product was identified in the recovered fluids.
 Annual sampling events were conducted on the site by other consultants from 2005 to 2012.
Results of the various sampling events indicated a slight downward trend in contaminant
concentrations in the on-site monitoring wells.
 In July 2014, Terracon performed a groundwater monitoring event for the NCDEQ. Terracon
sampled the four groundwater monitoring wells (MW-1 through MW-4) and the on-site
WSW (WSW-3). They were unable to sample water supply wells WSW-6 and WSW-7.
Multiple petroleum constituents were detected in monitoring wells MW-2, MW-3 and MW-4
at concentrations that exceeded their respective 2L Standards. Tetrachloroethene (PCE) was
detected in MW-1 and MW-2 and trichloroethene (TCE) was detected in MW-3 at levels that
exceeded their respective 2L Standards. The source of the chlorinated compounds is
unknown. No petroleum constituents were detected in the on-site WSW at concentrations
above 2L Standards.
 Terracon personnel mobilized to the site on May 2, 2017, to collect groundwater samples
from the four on-site monitoring wells to evaluate current groundwater conditions and install
oxygenating “bio-socks” in wells MW-2, MW-3, and MW-4. Benzene, 1,2-dichloroethane,
methyl tert-butyl ether (MTBE), and naphthalene were detected at concentrations above their
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respective 2L Standards in monitoring wells MW-2, MW-3 and MW-4. Chloromethane was
detected at a concentration above its 2L Standard in monitoring wells MW-2 and MW-3.
Toluene, 1,2,4-trimethylbenzene, and total xylenes were detected at concentrations above
their respective 2L Standards in monitoring well MW-3. No constituents were detected above
their respective Gross Contaminant Levels (GCLs).
 Terracon personnel mobilized to the site on February 9, 2018, to collect groundwater samples
from the four on-site monitoring wells and on-site WSW-3 to evaluate the current
groundwater conditions and to install oxygenating “bio-socks” in wells MW-2, MW-3 and
MW-4. Monitoring well MW-4 was “dry” during the sampling event and was not sampled.
Benzene, 1,2- dichloroethane, MTBE, naphthalene and PCE were detected at concentrations
above their respective 2L Standards in wells MW-2 and MW-3. Methylene chloride was also
detected above its 2L Standard in well MW-3. PCE and MTBE were also detected in well
MW-1 at estimated concentrations that were below their respective 2L Standards. No
constituents were detected at the site above the GCLs, and no constituents were detected in
WSW-3 above the method detection limits.
 Terracon personnel mobilized to the site on January 22, 2019, and February 4, 2019, to
collect groundwater samples from the four on-site monitoring wells and on-site WSW
(WSW-3) to evaluate the current groundwater conditions and to install oxygenating “bio-
socks” in wells MW-2, MW-3, and MW-4. Monitoring wells MW-1, MW-2, and MW-3
were sampled during the initial visit, but a truck was parked over well MW-4 rendering the
well inaccessible. Well MW-4 was sampled on February 4, 2019. The following petroleum
constituents were detected above the 2L Standards in one or more of the on-site monitoring
wells: benzene, 1,2-dichloroethane, MTBE, naphthalene, toluene, n-propylbenzene,
ethylbenzene, xylenes, and 1,2,4-trimethylbenzene. PCE and chloromethane were also
detected above their 2L Standards in wells MW-1 and MW-3, respectively. No constituents
were detected at the site above GCLs, and no constituents were detected in WSW-3 above
the method detection limits.
 Terracon mobilized to the site on December 31, 2020, to sample the four on-site monitoring
wells, the on-site WSW (WSW-3) and four additional WSWs (WSW-1, WSW-2, WSW-6,
and WSW-7). Monitoring wells MW-1 and MW-2 were inaccessible and not sampled during
this sampling event. Terracon attempted to sample on-site WSW-3 but the well is located
within a locked fence area, and the occupants of the site were not present during our site visit.
According to the laboratory analytical report, benzene, 1,2-dichloroethane, ethylbenzene,
MTBE, naphthalene, n-propylbenzene, toluene, 1,2,4- trimethylbenzene, and total xylenes
were detected above their respective 2L Standards in monitoring well MW-3. Benzene,
1,2-dichloroethane and naphthalene were detected above their respective 2L Standards in
monitoring well MW-4. Various other petroleum constituents were detected in monitoring
wells MW-3 and MW-4 at concentrations below their respective 2L Standards. No petroleum
constituents were detected in WSW-2 and WSW-7, the only off-site WSWs for which access
was granted.
 After the monitoring wells were sampled, RemRx Remediation mobilized to the site on
January 29, 2020, to install RemRx™ CRP Persulfate sleeves, a proprietary bioremediation
product, into each of the four on-site monitoring wells in an effort to reduce petroleum
concentrations in the groundwater.
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 Terracon mobilized to the site on July 31, 2020, to sample the four on-site monitoring wells
and the on-site WSW (WSW-3). Initially, Terracon removed the RemRx™ CRP Persulfate
sleeves from the monitoring wells. Following water level stabilization, Terracon gauged the
groundwater levels in the monitoring wells. Depth to groundwater measurements ranged
from 13.43 ft below top of casing (bTOC) in well MW-3 to 15.00 ft bTOC in well MW-4.
Monitoring well MW-2 did not contain a measurable water level (dry). Benzene,
naphthalene, ethylbenzene, MTBE, toluene, 1,2,4-trimethylbenzene, total xylenes, and
1,2-dichloroethane were detected above their respective 2L Standards in one or more of the
on-site monitoring wells. PCE was detected above its 2L Standard in MW-1. No petroleum
constituents were detected in WSW-3. None of the detected petroleum constituents exceed
the GCLs.
 On January 13, 2022, Terracon mobilized to the site to collect groundwater samples from
monitoring wells MW-1 through MW-4 along with WSW-3 and WSW-7. Terracon removed
the RemRx™ CRP Persulfate sleeves from monitoring wells MW-1, MW-3, and MW-4.
The bottom of well MW-2 was recorded as 30 ft bTOC in previous reports but was measured
during this event at 21.27 ft bTOC, most likely due to sediment accumulating in the well.
According to the laboratory analytical report, benzene, MTBE, 1,2-dichloroethane, and
naphthalene were detected above their respective 2L Standards in monitoring well MW-2.
Benzene, ethylbenzene, MTBE, naphthalene, n-propylbenzene, toluene,
1,2,4-trimethylbenzene, and total xylenes were detected above their respective 2L Standards
in monitoring well MW-3. Benzene, 1,2-dichloroethane, MTBE, and naphthalene were
detected above their respective 2L Standards in monitoring well MW-4. Various other
petroleum constituents were detected in the three monitoring wells at concentrations below
their respective 2L Standards. No petroleum constituents were detected above 2L Standards
in well MW-1, and no petroleum, constituents were detected above method detection limits
in WSW-3 and WSW-7. After the monitoring wells were sampled, the RemRx™ CRP
Persulfate sleeves, were reinstalled into their respective wells.

Historical groundwater elevations and analytical results are provided in Appendix A.
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3.0 FIELD ACTIVITIES

On July 19, 2023, ESP performed the following field activities:
 Gauged the static water level in monitoring well MW-4. Although planned, ESP was
unable to gauge MW-1 through MW-3 because access to these wells was obstructed by
cars that were inoperable (see photographs in Appendix B).
 Although planned, ESP was unable to redevelop MW-2 to reduce sediment by hand bailing
because access to this well was obstructed by cars that were inoperable.
 Collected a groundwater sample (and field duplicate) from monitoring well MW-4.
Although planned, ESP was unable to sample MW-1 through MW-3 because access to
these wells was obstructed by cars that were inoperable.
 Obtained an access agreement to sample WSW-7 (see agreement in Appendix B).
 Collected groundwater samples from WSW-3 and WSW-7. Although planned, a sample
could not be obtained from WSW-6 because permission was not granted to access the
property to sample this off-site WSW, and the WSW was reported by the owner to be
inactive.
 Removed the old RemRx™ CRP Persulfate sleeve from MW-4, and replaced it with an
oxygen release compound (ORC) sleeve. Although planned, ESP was unable to replace the
sleeves in MW-1 through MW-3 because access to these wells was obstructed by cars that
were inoperable.
 Performed an updated receptor survey (see Section 1.4).

Sample locations are depicted on Figure 2. Field logbook entries along with water level survey
forms, groundwater sampling forms, field instrument calibration forms and receptor survey forms
were completed in the field to document site activities (see Appendix B). Photographs are also
provided in Appendix B. Details of field activities are provided below.

3.1 Water Level Gauging

On July 19, 2023, prior to purging or collecting groundwater samples, depth to groundwater from
the top of casing (TOC) within each accessible monitoring well was measured and recorded using
a decontaminated electronic water level meter. The water level measurements were collected by
first removing covers and plunger caps from all accessible site monitoring wells and allowing
water within the wells to stabilize. The electronic water level meter probe was then lowered into
the well and the depth to water measured relative to the well’s TOC.

As noted on Table 2, a static water level depth of 16.00 ft bTOC was obtained from monitoring
well MW-4. As discussed above, monitoring wells MW-1 through MW-3 could not be gauged
because access to these wells was obstructed by overlying cars that were inoperable. Figure 3
depicts the groundwater elevation of MW-4 based on an unknown benchmark established during
past field efforts. Because MW-4 was the only well gauged, contours could not be approximated
and therefore are not shown. Based on historical data, groundwater flow beneath the site is to the
south-southwest.
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3.2 Groundwater Sampling

On July 19, 2023, a groundwater sample was collected from monitoring well MW-4 for off-site
laboratory analysis. A field duplicate was also collected from W-4. Although planned, ESP was
unable to sample monitoring wells MW-1 through MW-3 because access to these wells was
obstructed by overlying cars that were inoperable.

Groundwater samples were collected using dedicated and disposable polyvinyl chloride (PVC)
bailers (1.5” x 3’) attached to braided nylon rope. Prior to groundwater sample collection, each
well was purged using the bailer. During purging, water quality parameters including pH,
conductivity, temperature, and turbidity were measured using calibrated field water quality
instruments. Readings were taken at the start of purging and periodically until a minimum of three
well volumes were removed from the well and water quality parameters stabilized. Following
purging, a groundwater sample for laboratory analysis was collected from the well using the bailer.
The water quality parameters were recorded on groundwater sampling forms along with time,
water level depth, and cumulative volume of water purged (see groundwater sampling forms in
Appendix B).

Groundwater samples were collected following Guidelines for Sampling by the Underground
Storage Tank Section, Division of Waste Management, North Carolina Department of
Environmental Quality (NCDEQ, 2022). Groundwater samples were placed in laboratory-
prepared vials preserved with hydrochloric acid (HCl), labeled, and stored on ice in a cooler for
subsequent delivery under standard chain-of-custody (COC) procedures to Pace Analytical (Pace),
a North Carolina-certified laboratory, located in Huntersville, North Carolina, for analysis. The
groundwater samples were analyzed for volatile organic compounds (VOCs) by EPA Method
6200B including MTBE, ethylene dibromide (EDB), and isopropyl ether (IPE).

3.3 Water Supply Well Sampling

On July 19, 2023, groundwater samples were collected from WSW-3 and WSW-7. Although
planned, ESP was unable to sample WSW-6 as the owner declined to allow access to the property.
The owner of WSW-6 stated that the property is abandoned, and the well is inactive. Visual
observation of the property confirmed its status as abandoned. WSWs were sampled from spigots
as close to the well as possible. The spigot was turned on and allowed to purge for at least 15
minutes. Following the purge, flow was reduced, and samples were collected directly into
laboratory-prepared vials preserved with HCL, labeled, and stored on ice in a cooler for subsequent
delivery under standard COC procedures to Pace for analysis of VOCs by EPA Method 6200B
including MTBE, EDB, and IPE.

3.4 Field Quality Control Sampling and Analysis

On July 19, 2023, a field duplicate groundwater sample was collected from MW-4 and analyzed
for VOCs by EPA Method 6200B including MTBE, EDB, and IPE to assess variance between
samples.

Subsequent Monitoring Report ESP Project No. 23-00200-063
B.J.’s Chevron/McDaniel’s Construction (Incident #15257) September 5, 2023

9

4.0 ANALYTICAL RESULTS

Results of the laboratory analysis of groundwater samples from monitoring well MW-4 along with
WSW-3 and WSW-7 are tabulated in Table 3 and shown on Figure 4. As noted in Table 3, the
analytical results are compared to both 2L Standards and GCLs. The Pace laboratory analytical
report is provided in Appendix C.

A summary of the analytical results is as follows:
 No analytes were detected in MW-4 at concentrations exceeding their respective GCLs;
 Benzene, 1,2-dichloroethane, and naphthalene exceeded their respective 2L Standards in
MW-4, while various other VOCs were detected below their 2L Standards in MW-4; and
 No analytes were detected above method detection limits in water samples from WSW-3
and WSW-7.

Compared to the January 13, 2022, analytical results for MW-4, the July 19, 2023, sampling event
revealed slight decreases in benzene and 1,2-dichloroethane concentrations and a slight increase
in the naphthalene concentration. The general trend in groundwater contaminant concentrations
in MW-4 has been relatively stable with slight fluctuations since 2019.

Subsequent Monitoring Report ESP Project No. 23-00200-063
B.J.’s Chevron/McDaniel’s Construction (Incident #15257) September 5, 2023

10

5.0 CONCLUSIONS AND RECOMMENDATIONS

Based on results of the July 19, 2023, field activities and previous reporting, ESP concludes the
following:
 Based on the updated receptor survey, there are 26 WSWs within a 1,000-ft radius of the
source area, and municipal water is not available within a 1,000-ft radius of the source area.
Seventeen WSWs are located within a 500-ft radius of the source area, but only WSW-6
(reported by the owner to be inactive) and WSW-21 are located downgradient of the source
area based on ground surface topography and historic groundwater elevations.
 The static water level depth at MW-4 (the only monitoring well gauged as a result of
inoperable cars obstructing access to the other wells) was 16.00 ft bTOC.
 The general direction of groundwater flow beneath the site is to the south-southwest.
 No analytes were detected above their respective GCLs in MW-4; however, benzene,
1,2-dichloroethane, and naphthalene were detected above their respective 2L Standards in
MW-4. The general trend in groundwater contaminant concentrations in MW-4 has been
relatively stable with slight fluctuations since 2019.
 No analytes were detected above method detection limits in WSW-3 or WSW-7.

Based on the above results, ESP offers the following recommendations:
 Attempt to obtain a WSW sampling agreement from the owner of WSW-21 so that it can
be sampled during the next monitoring event along with WSW-3.
 Continue to sample site monitoring wells on a semiannual basis to understand
concentration trends and plume stability. Attempt to contact property owner ahead of time
to get vehicles moved off of previously inaccessible monitoring wells.
 Replace RemRx™ CRP Persulfate sleeves in MW-1, MW-2, and MW-3 with ORC sleeves
and change out the ORC sleeve in MW-4 during the next semiannual monitoring event.

Subsequent Monitoring Report ESP Project No. 23-00200-063
B.J.’s Chevron/McDaniel’s Construction (Incident #15257) September 5, 2023

11

6.0 REFERENCES

Gaston County, NC WebGIS, https://gis.gastongov.com/Map/Default.aspx.

1985 Geologic Map of North Carolina, The North Carolina Geological Survey, Phillip M. Brown,
1985.

Guideline for Sampling Underground Storage Tank Section, Division of Waste Management,
North Carolina Division of Environmental Quality, March 7, 2022, Change 4.

Terracon, February 4, 2022, Subsequent Monitoring Report: B.J.’s Chevron/McDaniels
Construction (Incident #15257), 4128 Kings Mountain Highway, Bessemer City, Gaston County,
North Carolina.

FIGURES
0 350 700Feet
ESP Associates, Inc.
P.O. Box 7030Charlotte, NC 28241
Phone [phone]
www.espassociates.com
SHEET TITLE
PROJECT
PROJECT NO.
SCALE
DRAWN BY
CHECKED BY
23-00200-063
ET
CWDATE08/04/2023
FIGURE 1USGS TOPOGRAPHIC SITE LOCATION MAPµAs Shown
BESSEMER CITY, NORTH CAROLINA
SITE BOUNDARY
All locations are approximate.
B.J.'S CHEVRON/MCDANIEL'S CONSTRUCTION
LEGEND:
NCDEQ Incident No. 15257
B.J.'s Chevron/ McDaniel's Construction
4128 Kings Mountain Highway
Bessemer City, North Carolina
ED
<GAMBLE LOOP ROAD
KINGS MOUNTAIN HIGH
W
A
Y
WSW-3
MW-1
MW-2
MW-4
<
<
<
MW-3
TANK EXCAVATION (1998)
TANK EXCAVATION (1995)
0 25 50Feet
ESP Associates, Inc.
P.O. Box 7030Charlotte, NC 28241
Phone [phone]
www.espassociates.com
SHEET TITLE
PROJECT
PROJECT NO.
SCALE
DRAWN BY
CHECKED BY
23-00200-063
ET
CWDATE08/04/2023
FIGURE 2SITE MAPµAs Shown
BESSEMER CITY, NORTH CAROLINA
SITE BOUNDARY
MONITORING WELL
WATER SUPPLY WELL
All locations are approximate.
B.J.'S CHEVRON/MCDANIEL'S CONSTRUCTION<
LEGEND:
ED
NCDEQ Incident No. 15257
B.J.'s Chevron/ McDaniel's Construction
4128 Kings Mountain Highway
Bessemer City, North Carolina
ED
<GAMBLE LOOP
ROAD
KINGS MOUNTAIN HIG
H
W
A
Y
WSW-3
MW-1
MW-2
MW-4
<
<
<
MW-3
TANK EXCAVATION (1998)
TANK EXCAVATION (1995)
0 25 50Feet
ESP Associates, Inc.
P.O. Box 7030Charlotte, NC 28241
Phone [phone]
www.espassociates.com
SHEET TITLE
PROJECT
PROJECT NO.
SCALE
DRAWN BY
CHECKED BY
23-00200-063
ET
CWDATE08/04/2023
FIGURE 3GROUNDWATER ELEVATION MAPJULY 17, 2023µAs Shown
BESSEMER CITY, NORTH CAROLINA
SITE BOUNDARYMONITORING WELLWATER SUPPLY WELLESTIMATED GROUNDWATER ELEVATION CONTOURSESTIMATED GROUNDWATER FLOW DIRECTION
All locations are approximate.
B.J.'S CHEVRON/MCDANIEL'S CONSTRUCTION
<
LEGEND:
ED
(Based on prior consultant's report)
83.39
NM
NM
NM
NCDEQ Incident No. 15257
B.J.'s Chevron/ McDaniel's Construction
4128 Kings Mountain Highway
Bessemer City, North Carolina
Groundwater elevation results
based on a benchmark of
100.40-ft given to MW-1.
NM - not measured
Not enough data points to
approximate groundwater
contours.
ED
<GAMBLE LOOP
ROAD
KINGS MOUNTAIN HIG
H
W
A
Y
WSW-3
MW-1
MW-2
MW-4
<
<
<
MW-3
ED
WSW-7
0 30 60Feet
ESP Associates, Inc.
P.O. Box 7030Charlotte, NC 28241
Phone [phone]
www.espassociates.com
SHEET TITLE
PROJECT
PROJECT NO.
SCALE
DRAWN BY
CHECKED BY
23-00200-063
ET
CWDATE08/04/2023
FIGURE 4GROUNDWATER RESULTS MAPJULY 19, 2023µAs Shown
BESSEMER CITY, NORTH CAROLINA
SITE BOUNDARY
MONITORING WELL
WATER SUPPLY WELL
All locations are approximate.
B.J.'S CHEVRON/MCDANIEL'S CONSTRUCTION<
LEGEND:
ED
NCDEQ Incident No. 15257
B.J.'s Chevron/ McDaniel's Construction
4128 Kings Mountain Highway
Bessemer City, North Carolina
NS
NS
NS
Samples Collected on 7/19/23 Bolded concentrations are greater than the 2LStandard.
Yellow highlighted values indicate constituentconcentrations greater than the GCL.
NS - not sampled
EDGAMBLE LOOP ROAD
KINGS MOUNTAIN HIG
H
W
A
Y
WSW-3
EDWSW-1
ED
WSW-2 ED
WSW-4 ED
WSW-5
ED
WSW-6
ED
ED
WSW-7
ED
WSW-8
ED
WSW-9
ED
WSW-10
ED
WSW-11
ED
WSW-12
ED
WSW-13
ED
WSW-14
ED
WSW-15
ED
WSW-16
ED
WSW-18
ED
WSW-17
ED
WSW-19
WSW-20ED
WSW-21
ED
WSW-22
ED
WSW-23
ED
WSW-24
ED
WSW-25
ED
WSW-26
HILLCREST DRIVE
1,000 FT
500 FT
0 110 220Feet
ESP Associates, Inc.
P.O. Box 7030Charlotte, NC 28241
Phone [phone]
www.espassociates.com
SHEET TITLE
PROJECT
PROJECT NO.
SCALE
DRAWN BY
CHECKED BY
23-00200-063
WR
CWDATE08/29/2023
FIGURE 5WATER SUPPLY WELL RADIUS MAPJULY 19, 2023µAs Shown
BESSEMER CITY, NORTH CAROLINA
SITE BOUNDARYWATER SUPPLY WELLFORMER UST LOCATION
All locations are approximate.
B.J.'S CHEVRON/MCDANIEL'S CONSTRUCTION
LEGEND:
ED
RIVERINE WETLANDFRESHWATER FORESTED/SHRUB WETLANDFRESHWATER POND
Inactive
TABLES
Table 1Water Supply Well InformationB.J.'s Chevron/McDaniel's ConstructionBessemer City, North Carolina NCDEQ Incident No. 15257(Page 1 of 2)Well No. Property Owner Mailing AddressProperty AddressDistance from Source Area (ft)Hydraulic Relationship to Source AreaWell Status/UseMunicpal WaterParcel No.CommentsWSW-1 Stanley Staley4202 Kings Mountian HwyBessemer City, NC 280164202 Kings Mountian HwyBessemer City, NC 28016~275 feet west Cross-GradientAssumed Active / PotableNo 153702WSW-2 Liza B LLC108 Chestnut LaneGastonia, NC 280524120 Kings Mountain HwyBessemer City, NC 28016~220 feet east Cross-GradientAssumed Active / PotableNo 153678Shares WSW-2 with property located at 4122 Kings Mountain HwyWSW-3John & Angel Riggan544 Diamond T RoadGastonia, NC 280524128 Kings Mountain HwyBessemer City, NC 28016~150 feet north UpgradientAssumed Active / PotableNo 153672On-site wellWSW-4 Mark Rednour270 St. Matthews Church RoadMaiden, NC 286504014 Kings Mountain HwyBessemer City, NC 28016~300 feet east Cross-GradientAssumed Active / PotableNo 153680WSW-5Inergy Propane, LLC.PO Box 206Whippany, NJ 079814106 Kings Mountain HwyBessemer City, NC 28016~500 feet northeast UpgradientAssumed Active / PotableNo 217103WSW-6 Maria R. Mason4210 Springview DriveDallas, NC 280344127 Kings Mountain HwyBessemer City, NC 28016~415 feet south Downgradient InactiveNo 153670Owner indicated property is abandoned and well is inactive/dryWSW-7EDA Holdings LLCP.O. Box 39Gastonia, NC 280534117 Kings Mountain HwyBessemer City, NC 28016~385 feet southeast Cross-GradientAssumed Active / PotableNo 153671WSW-8 Liza B LLC108 Chestnut LaneGastonia, NC 28052108 Gamble Loop RdBessemer City, NC 28016~246 feet north UpgradientAssumed Active / PotableNo 153675Shares WSW-8 with property located at 116 Gamble Loop RdWSW-9 Liza B LLC108 Chestnut LaneGastonia, NC 28052106 Gamble Loop RdBessemer City, NC 28016~265 feet northeast UpgradientAssumed Active / PotableNo 153677WSW-10 David A. Johnson 111 Gamble Loop RdBessemer City, NC 28016111 Gamble Loop RdBessemer City, NC 28016~340 feet northwest UpgradientAssumed Active / PotableNo 222114WSW-11Eric & Tanya Barnes 1126 Queensgate StGastonia, NC 28054114 Gamble Loop RdBessemer City, NC 28016~420 feet north UpgradientAssumed Active / PotableNo 153688WSW-12 Patricia H. Phillips115 Gamble Loop RdBessemer City, NC 28016115 Gamble Loop RdBessemer City, NC 28016~448 feet northwest UpgradientAssumed Active / PotableNo 153699WSW-13Laurel Wood Baptist Church124 Gamble Loop RdBessemer City, NC 28016124 Gamble Loop RdBessemer City, NC 28016~526 feet north UpgradientAssumed Active / PotableNo 153696WSW-14EDA Holdings, LLCP.O. Box 39Gastonia, NC 28053125 Gamble Loop RdBessemer City, NC 28016~485 feet northwest UpgradientAssumed Active / PotableNo 153672WSW-15Hillview Properties, LLC3059 Amaranth DrFort Mill, SC 29708201 Gamble Loop RdBessemer City, NC 28016~748 feet northwest UpgradientAssumed Active / PotableNo 153706WSW-16Hillview Properties, LLC3059 Amaranth DrFort Mill, SC 29708209 Gamble Loop RdBessemer City, NC 28016~890 feet northwest UpgradientAssumed Active / PotableNo 153707WSW-17 Stephen G. Renzi964 Blacksburg HwyBlacksburg, SC 29702303 Gamble Loop RdBessemer City, NC 28016~847 feet northeast UpgradientAssumed Active / PotableNo 153716WSW-18W&S Holdings, LLC2542 Cypress Oak LnGastonia, NC 28056310 Gamble Loop RdBessemer City, NC 28016~602 feet northeast UpgradientAssumed Active / PotableNo 308829WSW-19Tony & Michelle Duncan4101 Kings Mountain HwyBessemer City, NC 280164101 Kings Mountain HwyBessemer City, NC 28016~735 feet southeast Cross-GradientAssumed Active / PotableNo 218189WSW-20Jospeh & Linda Watson4109 Kings Mountain HwyBessemer City, NC 280164109 Kings Mountain HwyBessemer City, NC 28016~687 feet southeast Cross-GradientAssumed Active / PotableNo 308953
Table 1Water Supply Well InformationB.J.'s Chevron/McDaniel's ConstructionBessemer City, North Carolina NCDEQ Incident No. 15257(Page 2 of 2)Well No. Property Owner Mailing AddressProperty AddressDistance from Source Area (ft)Hydraulic Relationship to Source AreaWell Status/UseMunicpal WaterParcel No.CommentsWSW-21 Angela J. Holland4207 Kings Mountain HwyBessemer City, NC 280164207 Kings Mountain HwyBessemer City, NC 28016~370 feet southwest DowngradientAssumed Active / PotableNo 153668WSW-22 Theresa B. Hollis4212 Kings Mountain HwyBessemer City, NC 280164212 Kings Mountain HwyBessemer City, NC 28016~477 feet west Cross-GradientAssumed Active / PotableNo 153703WSW-23 Theresa B. Faile4212 Kings Mountain HwyBessemer City, NC 280164218 Kings Mountain HwyBessemer City, NC 28016~475 feet northwest UpgradientAssumed Active / PotableNo 205046WSW-24Michael & Ashley Wiggins3030 Old Church RdGastonia, NC 280524227 Kings Mountain HwyBessemer City, NC 28016~890 feet southwest Cross-GradientAssumed Active / PotableNo 153666WSW-25 Billy C. Ballard Jr716 Hillcrest DrBessemer City, NC 28016716 Hillcrest DrBessemer City, NC 28016~718 feet northeast UpgradientAssumed Active / PotableNo 153682WSW-26Johnny R. Scarborough724 Hillcrest DrBessemer City, NC 28016724 Hillcrest DrBessemer City, NC 28016~756 feet northeast UpgradientAssumed Active / PotableNo 153686Notes:Information obtained from previous monitoring report and updated water supply well survey conducted on 7/19/2023.
Table 2Monitoring Well Construction and Groundwater Elevation DataBJ's Chevron/McDaniel's ConstructionBessemer City, North CarolinaNCDEQ Incident No. 15257Well IDDate IntalledScreened Interval(ft BGS) aBottom of Well(ft BGS) aTop of Casing Elevation(ft) a,bDate Water Level MeasuredDepth to Water from Top of Casing(ft bTOC)Groundwater Elevation(ft)1/22/2019 15.67 84.737/31/2020 13.93 86.471/13/2022 18.80 81.807/19/20231/22/2019 16.30 73.397/31/20201/13/2022 18.40 81.687/19/202312/30/2019 14.80 84.347/31/2020 13.43 85.711/13/2022 17.52 81.627/19/202312/30/2019 18.80 80.597/31/2020 15.00 84.391/13/2022 19.97 79.427/19/2023 16.00 83.39 Notes:a Top of casing elevations, screened intervals, and bottom of well measurements are from previous consultants' monitoring reports (see Appendix A).b Top of casing elevations are based on a benchmark of 100.40-ft given to MW-1.BGS - below ground surfaceft - feetft bTOC - feet below TOCTOC - top of casing15.00-30.0015.00-30.0013.00-28.002/7/200630.0011.00-26.0030.0028.0026.00MW-1MW-2MW-3MW-412/10/200412/10/20042/4/200599.3999.14100.08100.40NM - Well Access ObstructedNM - Well Access ObstructedNM - Well Access ObstructedNM
Table 3Summary of Groundwater Analytical ResultsB.J.'s Chevron/McDaniel's ConstructionBessemer City, North CarolinaNCDEQ Incident No. 15257(Page 1 of 1)1.0 70 70 70 3 70 0.40 70 600 70 20 6 70 70 0.70 600 400 400 500 500 5005,000 5,900 8,800 14,750 3,000 70,000 400 70,000 80,000 30,500 20,000 6,000 26,100 70,000 700 260,000 28,500 24,100 50,000 50,000 50,00012/29/197/31/204.1<0.35 <0.25 <0.25 <0.42 0.35J 0.34J 0.5 <0.24 0.8 0.69 3.6 <0.24 <0.260.85<0.23 2 <0.23 10.5 NR NR1/13/22 <0.34 <0.49 <0.40 <0.32 <0.54 <0.38 <0.32 <0.31 <0.30 <0.33 0.48J 1.1J <0.34 <0.29 <0.29 <0.48 <0.50 <0.33 0.44J NR NR7/19/2312/29/197/31/201/13/221092.9 3.6 0.83 <0.54 <0.382.312.2 52.9 17.9109 61.228.4 <0.29 <0.29 1.9 <0.50 <0.33 2.07 NR NR7/19/2312/30/19708<3.5 <2.5 <2.5 <4.2 <2.15.2<3.395439.980.9 570 77.136.1 <2.31,630 6792381,832NR NR7/31/201,420<7.1 <4.9 <5.0 <8.3 <4.1 <5.3 58.61,13055125 616<4.8 46.2 <4.62,170 669<4.51,840NR NR1/13/22793<9.8 <8.0 <6.5 <10.8 <7.3 <6.4 34.31,01051.673.9 659 14535.4 <5.81,710 6892102,046NR NR7/19/2312/30/19206<0.71 <0.49 <0.50 <0.83 <0.412.628.5 99.8 7.9 12.9100<0.48 <0.51 <0.46 14.1 27.9 <0.45 93 NR NR7/31/20177<0.71 <0.49 <0.50 <0.83 <0.412.323.1 172 12.7 8.318721.1 <0.51 <0.46 17.7 136 38.3 174.2 NR NR1/13/22197<0.49 <0.40 <0.32 <0.54 <0.385.552.1 71.2 13.924.3 1287.8 1.3 <0.29 6.0 17.2 4.5 37.6 NR NR7/19/23105<0.066 <0.085 <0.086 0.74 J <0.111.919.9 40.5 12.3 6.314710.9 1.4 <0.086 3.7 7.6 <0.071 NR 10.4 1.9Field Duplicate (MW-4)7/19/23103<0.066 <0.085 <0.086 0.72 J <0.111.920.2 39.2 12.3 6.516410.6 1.4 <0.086 3.5 7.4 <0.071 NR 10 1.91/21/19 <0.25 <0.25 <0.25 <0.25 <0.5 <0.25 <0.25 <0.25 <0.25 <0.25 <0.25 <1.1 <0.25 <0.25 <0.25 <0.25 <0.25 <0.25 <0.5 NR NR7/31/20 <0.24 <0.35 <0.25 <0.25 <0.42 <0.21 <0.26 <0.33 <0.24 <0.24 <0.44 <0.66 <0.24 <0.26 <0.23 <0.23 <0.19 <0.23 <0.24 NR NR1/13/22 <0.34 <0.49 <0.40 <0.32 <0.54 <0.38 <0.32 <0.31 <0.30 <0.33 <0.42 <0.64 <0.34 <0.29 <0.29 <0.48 <0.50 <0.33 <1.05 NR NR7/19/23 <0.079 <0.066 <0.085 <0.086 <0.18 <0.11 <0.11 <0.072 <0.081 <0.11 <0.053<0.10 <0.10 <0.14 <0.086 <0.090<0.031 <0.071 NR <0.094 <0.141/14/1612/30/19 <0.24 <0.35 <0.25 <0.25 <0.42 <0.21 <0.26 <0.33 <0.24 <0.24 <0.44 <0.66 <0.24 <0.26 <0.23 <0.23 <0.19 <0.23 <0.24 NR NR1/13/22 <0.34 <0.49 <0.40 <0.32 <0.54 <0.36 <0.32 <0.31 <0.30 <0.33 <0.42 <0.64 <0.34 <0.29 <0.29 <0.48 <0.50 <0.33 <1.05 NR NR7/19/23 <0.079 <0.066 <0.085 <0.086 <0.18 <0.11 <0.11 <0.072 <0.081 <0.11 <0.053 <0.10 <0.10 <0.14 <0.086 <0.090 <0.031 <0.071 NR <0.094 <0.14Notes:Bold values indicate constituent concentrations were greater than the 2L Standard.Yellow highlighted values indicate constituent concentrations were greater than the GCL.Samples presented prior to the July 19, 2023 event were obtained from prevous consultants' reports.<## - less than the method detection limitµg/L - micrograms per liter2L Standard - North Carolina 02L standard for groundwaterGCL - Gross Contaminant LevelJ - Estimated concentration above the method detection limit and below the reporting limit.NR - not reportedWSW-3WSW-7Not SampledMW-3Not Sampled - No AccessMW-4MW-1Not Sampled - No AccessNot Sampled - No AccessMW-2Not Sampled - No AccessNot Sampled - DryNot Sampled - No Access1,3,5-TrimethylbenzeneXylenes (Total)m&p-Xyleneo-Xylene2L Standard (µg/L)TetrachloroetheneToluene1,2,4-Trimethylbenzenetert-ButylbenzeneGCL (µg/L)ChloromethaneNaphthalenen-PropylbenzeneStyrenecis-1,2-Dichloroethene1,2-DichloroethaneDiisopropyl ether (IPE)EthylbenzeneIsopropylbenzene (cumene)Methyl Tert-Butyl Ether (MTBE)Sample IDCollection DateBenzenen-Butylbenzenesec-Butylbenzene
APPENDIX A
TABLE 2Summary of Groundwater Analytical Results
BJ's Chevron/McDaniels ConstructionBessemer City, North Carolina
Terracon Project No. 71149633ANCDEQ Incident No. 15257
Well/SampleI.D.
Date Collected (mm/dd/yy)
12/10/04 0.52 <0.50 <0.50 3.7 4.6 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 <0.50 NR <0.50 NR 1.5 <0.50 NR NR 0.93 <0.50 NR NR NR <100 270 <100 <20010/20/05 25 <1.0 <1.0 51 2.7 4.0 1.4 <1.0 NR NR 14 NR NR NR NR NR NR NR NR NR <1.0 <1.0 NR NR NR NR NR NR NR12/11/077/3/08 <0.31 <0.28 <0.31 <1.2 4.81 <0.15 <0.12 <0.17 <0.24 <0.34 <0.41 <0.39 <0.47 NR <0.30 NR <0.26 <0.27 NR NR 0.9 IV <0.22 NR NR NR NR NR NR NR6/9/09 3 <5.0 <1.0 1.4 4.1 <1.0 <1.0 NR <1.0 <1.0 <5.0 <1.0 <1.0 NR <1.0 <1.0 <1.0 <1.0 NR <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 NS NS NS NS1/21/10 8.1 <0.5 <0.5 19 <0.5 2.3 <0.5 NR 0.91 0.93 1.9 <0.5 <0.5 NR <0.5 <0.5 2.9 <0.5 NR <0.5 1.4 0.64 <0.5 <0.5 <0.5 NS NS NS NS11/11/10 <0.50 <0.5 <0.5 <0.5 3.2 <0.5 <0.5 NR <0.5 <0.5 <0.5 <0.5 <0.5 NR <0.5 <0.5 <0.5 <0.5 NR <0.5 0.77 0.22J 0.33J <0.5 <0.5 NS NS NS NS6/2/11 0.36J <0.5 <0.5 0.51 1 <0.5 <0.5 NR <0.5 <0.5 0.17J <0.5 <0.5 NR <0.5 <0.5 <0.5 <0.5 NR <0.5 1.3 0.31J 0.68 <0.5 <0.5 NS NS NS NS1/9/12 <0.027 <0.17 <0.17 <0.17 0.95 <0.052 <0.023 NR <0.029 <0.018 <0.17 <0.017 <0.010 NR <0.024 <0.037 <0.17 <0.17 NR <0.17 2.0 0.34J 0.44J <0.059 <0.017 NS NS NS NS7/22/14 0.43J <0.25 <0.25 1.0 1.2 <0.25 <0.25 <0.25 <0.25 NR <1.0 <0.25 <0.25 NR <0.25 <0.25 <0.25 <0.25 <0.25 <1.0 2.3 <0.25 <0.25 <0.25 <0.25 NA NA NA NA1/14/16 <0.5 <0.5 <0.25 1.0 0.87 <0.5 <0.5 <0.5 <0.5 NA <1.0 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <1.0 3.4 <0.5 <0.5 <0.5 <0.5 NA NA NA NA5/2/17 <0.5 <0.5 <0.25 <0.5 0.66 <0.5 <0.5 <0.5 <0.5 NA <1.0 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <1.0 0.77 <0.5 <0.5 <0.5 <0.5 NA NA NA NA2/9/18 <0.25 <0.25 <0.25 <0.5 0.31J <0.25 <0.25 <0.25 <0.25 NA <1.0 <0.25 <0.25 <0.5 <0.25 <0.25 <0.25 <0.25 <0.25 <1.0 0.39J <0.25 <0.25 <0.25 <0.25 NA NA NA NA1/22/19 1.3 <0.25 <0.25 3.3 1.2 0.34J <0.25 <0.25 <0.25 NA 1.4J <0.25 <0.25 <0.5 <0.25 <0.25 0.82 <0.25 <0.25 <1.0 1.6 <0.25 0.33J <0.25 <0.25 NA NA NA NA12/29/197/31/20 4.1 <0.23 <0.24 10.5 0.69 0.5 0.34J <0.23 0.8 NA 3.6 <0.35 <0.25 <0.42 <0.24 <0.25 2 <0.23 <0.26 <1.5 0.85 <0.23 0.35J <0.21 <0.18 NA NA NA NA1/13/22 <0.34 <0.48 <0.30 0.44J 0.48J <0.31 <0.32 <0.27 <0.33 NA 1.1J <0.49 <0.40 <0.54 <0.34 <0.32 <0.50 <0.33 <0.29 <2.0 <0.29 <0.38 <0.38 <0.32 <0.36 NA NA NA NA12/10/04 6.5 <0.50 21 7.0 5.7 0.84 1.1 <0.50 4.5 <0.50 24 <0.50 13 NR 7 NR <0.50 5.2 NR NR 45 <0.50 NR NR NR 200 1,020 700 20010/20/05 390 7.3 24 8.9 430 75 10 <1.0 NR NR 110 NR NR NR NR NR NR NR NR NR 36 1.0 NR NR NR NR NR NR NR12/11/07 1,450 34.3 144 34.3 1,280 206 23.3 <10 NR NR 329 NR NR NR NR NR NR NR NR NR <10 10 NR NR NR NR NR NR NR7/3/08 1,090 28.6 190 28.6 1,160 182 22.2 <0.17 43.1 5.40 I 241 9.20 I 7.40 I NR 70.3 NR 4.00 I <2.7 NR NR <3.3 <2.2 NR NR NR NR NR NR NR6/9/09 440 <100 91 <40 470 58 <20 NR <20 <20 <100 <20 <20 NR 34 <20 <20 <20 NR <20 <20 <20 <20 <20 <20 NS NS NS NS1/21/10 720 18 200 27.9 960 90 <2.0 NR 40 3.6 240 12 7.4 NR 71 <2.0 3.9 2.1 NR <2.0 2.3 <2.0 <2.0 <2.0 <2.0 NS NS NS NS11/11/10 340 5.1 74 5.2 420 43 15 NR 11 4.8 76 <1.0 6.6 NR 29 1.4 <1.0 <1.0 NR 1.1 18 0.82J 0.80J <1.0 <1.0 NS NS NS NS6/2/11 480 11 160 16.3 550 50 20 NR 29 2.4J 130 9 5.5 NR 59 0.73J 2.4J <0.5 NR <0.5 7.5 0.5J <0.5 <0.5 <0.5 NS NS NS NS1/9/12 470 9.1 170 8.5 630 52 <0.093 NR 33 2.4 140 <0.067 6.5 NR 62 0.59J 2.9 <0.68 NR <0.68 2.2 <0.098 <0.35 <0.24 <0.35 NS NS NS NS7/22/14 251 5.7 155 6.2 344 34.3 5.2 <0.25 38.5 NA 116 8.4 8.1 NR 63.2 0.88 2.5 <0.25 <0.25 <1.0 10.1 0.58 0.38J <0.25 <0.25 NA NA NA NA1/14/16 234 4.4 157 4.3 318 27.6 4.5 <0.62 35.8 NA 127 <0.62 7.6 <0.62 63.5 0.79J 1.6 6.2 <0.62 3.1J 3.8 <0.62 <0.62 <0.62 <0.62 NA NA NA NA5/2/17 232 3.6 13 4.6 320 27.3 5.4 <0.62 0.67J NA 66.9 <0.5 <0.5 5.6 <0.5 0.96J 1.4 <0.5 <0.5 <2.0 <0.5 <0.5 <0.5 <0.5 <0.5 NA NA NA NA2/9/18 34.8 2 31.3 2.18J 243 19 1.6 <0.5 3.8 NA 20.6 <0.5 <0.5 <1.0 3.8 <0.5 1.2 <0.5 <0.5 <2.0 2.8 <0.5 <0.5 <0.5 <0.5 NA NA NA NA1/22/19 154 3.1 161 3.9 199 20.8 3.6 <0.5 39.7 NA 93.5 <0.5 9.7 <1.0 71.3 1.0 <0.5 <0.5 <0.5 <2.0 <0.5 <0.5 <0.5 <0.5 <0.5 NA NA NA NA12/29/197/31/201/13/22 109 1.9 52.9 2.07 109 12.2 2.3 <0.27 17.9 NA 61.2 2.9 3.6 <0.54 28.4 0.83 <0.50 <0.33 <0.29 <2.0 <0.29 <0.38 <0.38 <0.32 <0.36 NA NA NA NA
MW-1
MW-2
Analytical Method
1,2,4-TrimethylbenzeneBenzeneIsopropylbenzeneNaphthaleneEthylbenzene Xylenes (total)Toluenen-PropylbenzeneContaminant of Concern →Chloromethanen-Butylbenzene1,2-Dibromoethane (EDB)2-Chlorotoluenep-IsopropyltolueneMADEP VPH
C9-C22 AromaticsDiisopropyl Ether (DIPE)tert-butylbenzenesec-Butylbenzene1,2-Dichloropropane1,3,5-TrimethylbenzeneStyreneMethylene ChlorideTetrachloroetheneTrichloroethenecis-1,2-DichloroetheneC5-C8 AliphaticsC19-C36 AliphaticsC9-C18 Aliphatics6200B
Not Sampled - Dry
Not Sampled - DryMethyl tert-Butyl Ether (MTBE)1,2-DichloroethaneNot Sampled - No Access
Not Sampled - No Access
1 of 3
TABLE 2Summary of Groundwater Analytical Results
BJ's Chevron/McDaniels ConstructionBessemer City, North Carolina
Terracon Project No. 71149633ANCDEQ Incident No. 15257
Well/SampleI.D.
Date Collected (mm/dd/yy)
MW-1
Analytical Method
1,2,4-TrimethylbenzeneBenzeneIsopropylbenzeneNaphthaleneEthylbenzene Xylenes (total)Toluenen-PropylbenzeneContaminant of Concern →Chloromethanen-Butylbenzene1,2-Dibromoethane (EDB)2-Chlorotoluenep-IsopropyltolueneMADEP VPH
C9-C22 AromaticsDiisopropyl Ether (DIPE)tert-butylbenzenesec-Butylbenzene1,2-Dichloropropane1,3,5-TrimethylbenzeneStyreneMethylene ChlorideTetrachloroetheneTrichloroethenecis-1,2-DichloroetheneC5-C8 AliphaticsC19-C36 AliphaticsC9-C18 Aliphatics6200B
Methyl tert-Butyl Ether (MTBE)1,2-Dichloroethane2/4/05 2,600 91 21 880 760 450 50 <1.0 30 14 450 <1.0 <1.0 NR 30 NR 340 60 NR NR 1.9 <1.0 NR NR NR 7,500 2,700 <100 1,29010/20/05 5,500 5,800 1,500 5,100 2,200 660 <100 <100 NR NR 730 NR NR NR NR NR NR NR NR NR <100 <100 NR NR NR NR NR NR NR3/27/06 7,440 13,500 2,180 9,760 2,050 608 <50 <50 93 <50 892 <50 <50 NR 195 NR 2,140 585 NR NR <50 <50 NR NR NR NR NR NR NR12/11/077/3/08 3,270 4,640 1,520 3,840 1,010 419.1 28.0 I <17 58.0 I <34 633 <39 <47 NR 152 NR 1,070 339 NR NR <33 <22 NR NR NR NR NR NR NR6/9/09 3,400 4,400 1,200 3,400 820 310 <200 NR <200 <200 <1000 <200 <200 NR <200 <200 820 310 NR <200 <200 <200 <200 <200 <200 NS NS NS NS1/21/10 3,000 4,100 1,600 3,800 690 280 <12 NR 78 <12 690 <12 <12 NR 200 <12 1,000 400 NR <12 <12 <12 <12 <12 <12 NS NS NS NS11/11/10 3,700 3,700 1,800 4,100 790 330 110 NR <10 43 640 <10 42 NR 190 <10 980 350 NR <10 <10 <10 <10 140 <10 NS NS NS NS6/2/11 2,600 3,800 1,600 4,100 480 210 <20 NR 52 30 660 150 <20 NR 130 <20 1,200 420 NR <20 <20 <20 <20 <20 <20 NS NS NS NS1/9/12 2,500 2,800 1,600 3,300 450 210 <0.47 NR 64 8.0J 660 <0.33 8.4J NR 180 <0.74 1,000 390 NR <3.4 <0.29 <0.49 <1.7 <3.5 <1.6 NS NS NS NS7/22/14 2,120 3,030 1,460 2,951 280 142 11.9 <5.0 63.9 NA 726 <5.0 <5.0 NR 174 <5.0 938 308 62.9 <20 <5.0 6.3J <5.0 <5.0 <5.0 NA NA NA NA1/14/16 1,380 2,390 1,440 2,749 172 79.6 11.2J <6.2 73 NA 789 <6.2 <6.2 <6.2 211 <6.2 1,120 384 53.3 <25.0 <6.2 <6.2 <6.2 <6.2 <6.2 NA NA NA NA5/2/17 561 1,320 353 2,001 78 38.0 6.3 <0.5 7.1 NA 475 <2.5 <2.5 17.8 <2.5 <2.5 587 <2.5 28.0 <10.0 <2.5 <2.5 <2.5 <2.5 <2.5 NA NA NA NA2/9/18 364 253 191 439 96.8 51.8 7.8 <0.62 1.7 NA 104 <0.62 <0.62 17.8 <0.62 <0.62 84 <0.62 14.7 6.7 1.0J <0.62 <0.62 <0.62 <0.62 NA NA NA NA1/22/19 814 1,870 1,170 1,986 81.5 32.5 4.5J <2.5 59 NA 577 <2.5 <2.5 15.9 <2.5 <2.5 932 <2.5 44.7 <10.0 <2.5 <2.5 <2.5 <2.5 <2.5 NA NA NA NA12/30/19 708 1,630 954 1,832 80.9 <3.3 5.2 <2.3 39.9 NA 570 <3.5 <2.5 <4.2 77.1 <2.5 679 238 36.1 <15.0 <2.3 <2.3 <2.1 <2.1 <1.8 NA NA NA NA7/31/20 1,420 2,170 1,130 1,840 125 58.6 <5.3 <4.6 55 NA 616 <7.1 <4.9 <8.3 <4.8 <5.0 669 <4.5 46.2 <30.0 <4.6 <4.6 <4.1 <4.1 <3.7 NA NA NA NA1/13/22 793 1,710 1,010 2,046 73.9 34.3 <6.4 <5.4 51.6 NA 659 <9.8 <8.0 <10.8 145.0 <6.5 689 210 35.4 <39.0 <5.8 <7.7 <7.3 <6.4 <7.1 NA NA NA NA2/7/06 6,610 732 1,480 4,800 510 1,110 <0.50 8.34 51.9 5.0 602 23.9 7 NR 106 NR 1,190 191 NR NR 2.31 <0.5 NR NR NR NR NR NR NR3/27/06 3,800 550 1,210 1,210 155 566 <50 <50 <50 <50 705 <50 <50 NR 63 NR 1,310 338 NR NR <50 <50 NR NR NR NR NR NR NR12/11/077/3/086/9/09 3,400 120 370 1,070 260 610 61 NR 31 <20 430 <20 <20 NR 35 <20 280 150 NR <20 <20 <20 <20 <20 <20 NS NS NS NS1/21/10 2,000 140 360 890 150 400 <10 NR 42 <10 500 <10 <10 NR 46 <10 360 160 NR <10 <10 <10 <10 <10 <10 NS NS NS NS11/11/10 330 10 16 46 140 370 41 NR 24 5.8 370 <1.0 6.4 NR 9.9 1.4 19 16 NR <1.0 <1.0 <1.0 <1.0 <1.0 1.0 NS NS NS NS6/2/11 1,400 64 510 720 110 270 <0.5 NR 39 4.8J 600 <0.5 <0.5 NR 52 <0.5 550 170 NR <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 NS NS NS NS1/9/12 2,300 58 160 260 210 420 <1.9 NR 42 4.4J 560 12 <0.21 NR 39 <0.74 84 68 NR <3.4 <0.26 <0.62 <1.7 <1.2 <1.6 NS NS NS NS7/22/14 75.8 6.3 7.8 26.3 34.9 113 12.2 <0.25 4.8 NR 102 <0.25 <0.25 NR 0.53 <0.25 20 <0.25 2.7 <1.0 <0.25 <0.25 <0.25 <0.25 <0.25 NA NA NA NA1/14/16 636 13.9 43.8 39 91.2 217 17.2 <0.5 45.4 NA 367 7.5 5.0 <0.5 20.3 <0.5 22.1 5.8 1.8 <1.0 <0.5 <0.5 <0.5 <0.5 <0.5 NA NA NA NA5/2/17 198 0.99J 2.7 14.3 42.3 101 7.5 <0.5 12.5 NA 112 1.8 <0.5 2.0J <0.5 <0.5 <0.5 8.8 <0.5 <2.0 <0.5 <0.5 <0.5 <0.5 <0.5 NA NA NA NA2/9/182/4/19 64.6 6.1 29.3 40.7 11.7 29 2.6 <0.25 2.9 NA 22.3 <0.25 <0.25 <0.5 <0.5 <0.25 10.8 3.1 0.43J <1.0 <0.25 <0.25 <0.25 <0.25 <0.25 NA NA NA NA12/30/19 206 14.1 99.8 93 12.9 28.5 2.6 <0.46 7.9 NA 100 <0.71 <0.49 <0.83 <0.48 <0.50 27.9 <0.45 <0.51 <3.0 <0.46 <0.46 <0.41 <0.41 <0.37 NA NA NA NA7/31/20 177 17.7 172 174.2 8.3 23.1 2.3 <0.46 12.7 NA 187 <0.71 <0.49 <0.83 21.1 <0.50 136 38.3 <0.51 <3.0 <0.46 <0.46 <0.41 <0.41 <0.37 NA NA NA NA1/13/22 197 6.0 71.2 37.6 24.3 52.1 5.5 <0.27 13.9 NA 128 <0.49 <0.40 <0.54 7.8 <0.32 17.2 4.5 1.3 <2.0 <0.29 <0.38 <0.38 <0.32 <0.36 NA NA NA NA8/30/01 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 NR <0.5 <0.5 <0.5 <0.5 <0.5 <5 <0.5 <0.5 <0.5 <0.5 <0.5 NS NS NS NS12/10/04 0.52 <0.5 <0.5 3.7 4.6 <0.5 <0.5 NR <0.5 NR NR NR NR NR <0.5 NR 1.5 <0.5 NR NR 0.93 NR NR NR NR <100 270 <100 <2008/30/01 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 NR <0.5 <0.5 <0.5 <0.5 <0.5 <5 <0.5 <0.5 <0.5 <0.5 <0.5 NS NS NS NS12/10/04 6.5 <0.5 21 7.0 5.7 <0.5 1.1 NR 4.5 NR NR NR NR NR 7.1 NR <0.5 5.2 NR NR 45 NR NR NR NR 200 1,020 700 20012/30/19 <0.24 <0.23 <0.24 <0.24 <0.44 <0.33 <0.26 <0.23 <0.24 NA <0.66 <0.35 <0.25 <0.42 <0.24 <0.25 <0.19 <0.23 <0.26 <1.5 <0.23 <0.23 <0.21 <0.21 <0.18 NA NA NA NA8/30/01 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 NR <0.5 <0.5 <0.5 <0.5 <0.5 <5 <0.5 <0.5 <0.5 <0.5 <0.5 NS NS NS NS2/4/05 2,600 91 21 880 760 450 50 NR 30 14 450 NR NR NR 30 NR 340 60 NR NR 1.9 NR NR NR NR 7,500 2,700 <100 1,29012/11/07 <1.0 <1.0 <1.0 <2.0 <1.0 <1.0 <1.0 <1.0 NR NR <2.0 NR NR NR NR NR NR NR NR NR <1.0 <1.0 NR NR NR NR NR NR NR7/3/08 <0.31 <0.28 <0.31 <1.2 <0.12 <0.15 <0.12 <0.17 <0.24 <0.34 0.440 I <0.39 <0.47 NR <0.30 NR <0.26 <0.27 NR NR 0.580 IV <0.22 NR NR NR NR NR NR NR6/9/09 <1.0 <5.0 <1.0 <2.0 <1.0 <1.0 <1.0 NR <1.0 <1.0 <5.0 <1.0 <1.0 NR <1.0 <1.0 <1.0 <1.0 NR <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 NS NS NS NS1/21/10 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 NR <0.50 <0.50 <0.50 <0.50 <0.50 NR <0.50 <0.50 <0.50 <0.50 NR <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 NS NS NS NS11/11/10 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 NR <0.50 <0.50 <0.50 <0.50 <0.50 NR <0.50 <0.50 <0.50 <0.50 NR <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 NS NS NS NS6/2/11 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 NR <0.50 <0.50 <0.50 <0.50 <0.50 NR <0.50 <0.50 <0.50 <0.50 NR <0.50 0.20J <0.50 <0.50 <0.50 <0.50 NS NS NS NS1/9/12 <0.027 <0.17 <0.17 <0.17 <0.019 <0.052 <0.023 NR <0.029 <0.018 <0.17 <0.17 <0.010 NR <0.024 <0.037 <0.17 <0.17 NR <0.17 <0.014 <0.024 <0.090 <0.059 <0.08 NS NS NS NS7/22/14 <0.25 <0.25 <0.25 <0.50 <0.25 <0.25 <0.25 <0.25 <0.25 NR 1.1J <0.25 <0.25 NR <0.25 <0.25 <0.25 <0.25 <0.25 <1.0 <0.25 <0.25 <0.25 <0.25 <0.25 NA NA NA NA1/14/16 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 NA <1.0 <0.5 <0.5 NR <0.5 <0.5 <0.5 <0.5 <0.5 <1.0 <0.5 <0.5 <0.5 <0.5 <0.5 NA NA NA NA5/2/172/9/18 <0.25 <0.25 <0.25 <0.5 0.31J <0.25 <0.25 <0.25 <0.25 NA <1.0 <0.25 <0.25 <0.5 <0.25 <0.25 <0.25 <0.25 <0.25 <1.0 0.39J <0.25 <0.25 <0.25 <0.25 NA NA NA NA1/21/19 <0.25 <0.25 <0.25 <0.5 <0.25 <0.25 <0.25 <0.25 <0.25 NA <1.1 <0.25 <0.25 <0.5 <0.25 <0.25 <0.25 <0.25 <0.25 <1.1 <0.25 <0.25 <0.25 <0.25 <0.25 NA NA NA NA7/31/20 <0.24 <0.23 <0.24 <0.24 <0.44 <0.33 <0.26 <0.23 <0.24 NA <0.66 <0.35 <0.25 <0.42 <0.24 <0.25 <0.19 <0.23 <0.26 <1.5 <0.23 <0.23 <0.21 <0.21 <0.18 NA NA NA NA1/13/22 <0.34 <0.48 <0.30 <1.05 <0.42 <0.31 <0.32 <0.27 <0.33 NA <0.64 <0.49 <0.40 <0.54 <0.34 <0.32 <0.50 <0.33 <0.29 <2.0 <0.29 <0.38 <0.38 <0.32 <0.36
MW-3
Not Sampled - DryNot Sampled - Dry
Not Sampled
Not Sampled - Dry
WSW-2
MW-4
WSW-3
WSW-1
Not Sampled - Free Product
2 of 3
TABLE 2Summary of Groundwater Analytical Results
BJ's Chevron/McDaniels ConstructionBessemer City, North Carolina
Terracon Project No. 71149633ANCDEQ Incident No. 15257
Well/SampleI.D.
Date Collected (mm/dd/yy)
MW-1
Analytical Method
1,2,4-TrimethylbenzeneBenzeneIsopropylbenzeneNaphthaleneEthylbenzene Xylenes (total)Toluenen-PropylbenzeneContaminant of Concern →Chloromethanen-Butylbenzene1,2-Dibromoethane (EDB)2-Chlorotoluenep-IsopropyltolueneMADEP VPH
C9-C22 AromaticsDiisopropyl Ether (DIPE)tert-butylbenzenesec-Butylbenzene1,2-Dichloropropane1,3,5-TrimethylbenzeneStyreneMethylene ChlorideTetrachloroetheneTrichloroethenecis-1,2-DichloroetheneC5-C8 AliphaticsC19-C36 AliphaticsC9-C18 Aliphatics6200B
Methyl tert-Butyl Ether (MTBE)1,2-DichloroethaneWSW-4 8/30/01 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 NR <0.5 <0.5 <0.5 <0.5 <0.5 <5 <0.5 <0.5 <0.5 <0.5 <0.5 NS NS NS NSWSW-5 8/30/01 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 NR <0.5 <0.5 <0.5 <0.5 <0.5 <5 <0.5 <0.5 <0.5 <0.5 <0.5 NS NS NS NS8/30/01 51 12 <0.5 13 <0.5 32 3 <0.5 <0.5 <0.5 5 <0.5 <0.5 NR <0.5 <0.5 1 <0.5 <0.5 <5 9 <0.5 <0.5 <0.5 <0.5 NS NS NS NS12/10/04 <1.0 <1.0 <1.0 <3.0 <1.0 30 <1.0 <1.0 <1.0 <1.0 <2.0 <1.0 <1.0 NR <1.0 NR <1.0 <1.0 NR NR 1.1 <1.0 NR NR NR NR NR NR NR12/11/071/14/16 3.0 <0.5 <0.5 <0.5 8.0 71.0 4.7 <0.5 <0.5 NA <1.0 <0.5 <0.5 NR <0.5 <0.5 <0.5 <0.5 <0.5 <1.0 1.9 <0.5 <0.5 <0.5 <0.5 NA NA NA NA8/30/01 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 NR <0.5 <0.5 <0.5 <0.5 <0.5 <5 1 <0.5 <0.5 <0.5 <0.5 NS NS NS NS12/10/04 <1.0 <1.0 <1.0 <3.0 4.6 <1.0 <1.0 NR <1.0 NR <2.0 NR NR NR <1.0 NR <1.0 <1.0 NR NR NR NR NR NR NR NR NR NR NR12/10/05 <1.0 <1.0 <1.0 <3.0 1.8 <1.0 <1.0 NR NR NR <2.0 NR NR NR NR NR NR NR NR NR <1.0 NR NR NR NR NR NR NR NR1/14/1612/30/19 <0.24 <0.23 <0.24 <0.24 <0.44 <0.33 <0.26 <0.23 <0.24 NA <0.66 <0.35 <0.25 <0.42 <0.24 <0.25 <0.19 <0.23 <0.26 <1.5 <0.23 <0.23 <0.21 <0.21 <0.18 NA NA NA NA1/13/22 <0.34 <0.48 <0.30 <1.05 <0.42 <0.31 <0.32 <0.27 <0.33 NA <0.64 <0.49 <0.40 <0.54 <0.34 <0.32 <0.50 <0.33 <0.29 <2.0 <0.29 <0.38 <0.36 <0.32 <0.36 NA NA NA NAWSW-8 8/30/01 <0.5 1 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 NR <0.5 <0.5 <0.5 <0.5 <0.5 <5 <0.5 <0.5 <0.5 <0.5 <0.5 NS NS NS NS160060050020700.4 0.02 70 25 6 70 70 3 70 70 400 400 70 5 0.7 3 70 24 0.6 400 700 10,000 2005,000 260,000 84,500 85,500 20,000 70,000 400 50 25,000 11,700 6,000 6,900 8,500 3000 30,000 15,000 28,500 25,000 70,000 5,000 700 3,000 70,000 7,500 600 NE NE NE NE
<- denotes less than method detection limitNS denotes not sampled.NR denotes result not reported. NE denotes standard not established.Bold font denotes levels above the 2L standard.Bold font and yellow shading denotes levels above the GCL.
GCL (ug/L)2L Standard (ug/L)
Not SampledWSW-6
Not SampledWSW-7
3 of 3
APPENDIX B
15257
WSW-7
500 FT
WSW-14
WSW-25
1
Nora Zirps
From:Mike Delgado
Sent:Thursday, August 24, 2023 10:40 AM
To:Nora Zirps
Cc:Matt Craig
Subject:RE: BJ's Chevron Public Water Access
Alright. Spoke with them again. They confirmed there is no public water supply within 1,000 Ō radius of the site.
Confirmed by provided the address and adjacent address to the site.

Michael E. Delgado 
Staff Environmental ScienƟst
ESP Associates, Inc 
P.O Box 7030
CharloƩe, NC 28241
www.espassociates.com

[e-mail]
803.627.4187 | Direct
980.417.3114 | Office

From: Nora Zirps <[e-mail]>
Sent: Thursday, August 24, 2023 10:26 AM
To: Mike Delgado <[e-mail]>
Cc: Matt Craig <[e-mail]>
Subject: RE: BJ's Chevron Public Water Access

Yes, please check with him in some way, either by asking about street names in the 1,000 Ō radius or how close they
come to that area or something to that effect. This will help beƩer define the “area”.

Nora A. Zirps, PE, RSM
ESP Associates, Inc.
7011 Albert Pick Road, Suite E
Greensboro, NC 27409
www.espassociates.com

[e-mail]
336.232.5213 | Direct
336.334.7724 | Office
336.420.6979 | Cell

From: Mike Delgado <[e-mail]>
Sent: Thursday, August 24, 2023 10:16 AM
To: Nora Zirps <[e-mail]>
Cc: Matt Craig <[e-mail]>
Subject: RE: BJ's Chevron Public Water Access
2

I did not ask for 1,000 Ō specifically. The quote from Bessmer is “we do not provide service to that area”. If you need me
to call back and ask about the 1,000 Ō specifically I can!

Michael E. Delgado 
Staff Environmental ScienƟst
ESP Associates, Inc 
P.O Box 7030
CharloƩe, NC 28241
www.espassociates.com

[e-mail]
803.627.4187 | Direct
980.417.3114 | Office

From: Nora Zirps <[e-mail]>
Sent: Thursday, August 24, 2023 10:14 AM
To: Mike Delgado <[e-mail]>
Cc: Matt Craig <[e-mail]>
Subject: RE: BJ's Chevron Public Water Access

Did you ask them whether public water lines were present within the 1,000 Ō radius of the site?

Nora A. Zirps, PE, RSM
ESP Associates, Inc.
7011 Albert Pick Road, Suite E
Greensboro, NC 27409
www.espassociates.com

[e-mail]
336.232.5213 | Direct
336.334.7724 | Office
336.420.6979 | Cell

From: Mike Delgado <[e-mail]>
Sent: Thursday, August 24, 2023 10:10 AM
To: Nora Zirps <[e-mail]>
Cc: Matt Craig <[e-mail]>
Subject: BJ's Chevron Public Water Access

Good Morning,

I just spoke with a representaƟve from Gaston County and one from Bessemer City. Both confirm they do not supply
public water to the property on site, and they do not list public water supply wells in the area.

Thank you

Michael E. Delgado 
Staff Environmental ScienƟst
3
ESP Associates, Inc 
P.O Box 7030
CharloƩe, NC 28241
www.espassociates.com

[e-mail]
803.627.4187 | Direct
980.417.3114 | Office

MW-2
MW-4
Contextual view of immobile cars parked over MW-1 area.
Contextual view of immobile cars parked over MW-1 area.
Contextual view of immobile cars parked over MW-3 area.
APPENDIX C