HomeMy WebLinkAboutAS-2032_24329_CA_MRP_20230912SUBSEQUENT MONITORING
REPORT
NAPLES #27510 (CYCLE SHOP) (INCIDENT NO. 24239)
5858 ASHEVILLE HIGHWAY
NAPLES, HENDERSON COUNTY, NORTH CAROLINA
ESP Project No. 23-00200-080
Prepared For:
North Carolina Department of Environmental Quality
Division of Waste Management
1646 Mail Service Center
Raleigh, North Carolina 27699-1646
Prepared By:
ESP Associates, Inc.
P. O. Box 7030
Charlotte, North Carolina 28241
September 12, 2023
ESP Associates, Inc.
P.O. Box 7030 • Charlotte, NC 28241
1.800.960.7317 • NC: 704.583.4949, fax 704.583.4950 • SC: 803.802.2440, fax 803.802.2515
www.espassociates.com
September 12, 2023
Mr. Scott Ryals
North Carolina Department of Environmental Quality
Division of Waste Management
1646 Mail Service Center
Raleigh, North Carolina 27699-1646
Email: Scott.Ryals@deq.nc.gov
Reference: SUBSEQUENT MONITORING REPORT
Naples #27510 (Cycle Shop) (Incident #24239)
5858 Asheville Highway
Naples, Henderson County, North Carolina
ESP Project No. 23-00200-080
Dear Mr. Ryals:
ESP Associates, Inc. (ESP) is pleased to present this Subsequent Monitoring Report documenting
activities performed at the subject site, Naples #27510 (Cycle Shop), in accordance with North
Carolina Department of Environmental Quality (NCDEQ), Task Authorization No. 1, approved on
June 22, 2023. The subject site is located at 5858 Asheville Highway in Naples, 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 (704) 506-7618.
Sincerely,
ESP Associates, Inc.
Matthew R. Craig Christopher J. Ward, PG, RSM
Project Manager Senior Geologist
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 .................................................................................................................. 3
3.0 FIELD ACTIVITIES ........................................................................................................... 5
3.1 WATER LEVEL GAUGING ........................................................................................ 5
3.2 GROUNDWATER SAMPLING ................................................................................... 6
3.3 FREE PRODUCT EVALUATION ................................................................................ 6
3.4 WATER SUPPLY WELL SAMPLING ......................................................................... 6
3.5 FIELD QUALITY CONTROL SAMPLING AND ANALYSIS ....................................... 7
4.0 ANALYTICAL RESULTS .................................................................................................. 8
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 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 Photographs and Field Documentation
Appendix C Laboratory Data Reports
Subsequent Monitoring Report ESP Project No. 23-00200-080
Naples #27510 (Cycle Shop)(Incident #24239) September 12, 2023
i
SITE INFORMATION
Date of Report: September 12, 2023
NCDEQ Incident No: 24239
NCDEQ UST No.: AS-2032
Site Name: Naples #27510 (Cycle Shop)
Site Location: 5858 Asheville Highway
Naples, Henderson County, NC 28791
Latitude: N 35.397120
Longitude: W -82.506590
UST Owner/ Operator: Petroleum World Inc.
P.O. Box 341
Mooresboro, NC 28114
Current Property
Owner: Ronnie P. Gray
P.O. Box 1694
Hendersonville, NC 28793
Current Property
Occupant: R&P Cycle Supply
Site Contact: Ronnie Gray (828) 654-7772
Consultant: ESP Associates, Inc.
P.O. Box 7030
Charlotte, NC 28241
(704) 583-4949
Laboratory: Pace Analytical Services, LLC
NCDEQ No. 5342
9800 Kincey Avenue
Huntersville, NC 28028
(704) 875-9092
Release Information: Release Discovery Date: September 19, 2001.
Estimate Quantity: Unknown.
Cause of Release: Unknown
Source of Release: UST System
Currently Active Tanks: None, tanks removed
Subsequent Monitoring Report ESP Project No. 23-00200-080
Naples #27510 (Cycle Shop)(Incident #24239) September 12, 2023
ii
I, Christopher J. Ward, a Professional Geologist 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.’ certification numbers are: Geology: C-556 / Engineering: F-1407
Subsequent Monitoring Report ESP Project No. 23-00200-080
Naples #27510 (Cycle Shop)(Incident #24239) September 12, 2023
iii
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 Naples #27510 (Cycle Shop) (Incident No. 24239). The site
is a developed commercial site located at 5858 Asheville Highway, Naples, Henderson County,
North Carolina. This report was completed to summarize the findings of assessment activities
performed on July 18, 2023, in accordance with North Carolina Department of Environmental Quality
(NCDEQ), Task Authorization No. 1, approved on June 22, 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 Christopher J. Ward, North Carolina
registered professional geologist (North Carolina License No. 1600).
On July 18, 2023, ESP performed the following field activities:
• Gauged static water levels in site monitoring wells MW-1 and MW-2. Although planned,
ESP was unable to gauge the static water level in MW-8 as the well column was filled with
soil and sand. Digging into the soil did not remove obstruction;
• Collected groundwater samples from monitoring wells MW-1 and MW-2, including a field
duplicate of MW-1. Although planned, ESP was unable to sample MW-8 due to the
aforementioned soil obstruction; and
• Collected a water sample from on-site water supply well WSW-1.
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).
Based on results of the above field activities and previous reporting, ESP concludes the following:
• Three of the water supply wells (WSW-1, WSW-3, and WSW-19) are located within 500
feet of the source area with WSW-1 being located on site;
• It has been reported that the site obtains its drinking water from a municipal source while
on-site WSW-1 is not used for drinking water but instead is used for operations at site’s
the R&P Cycle maintenance shop;
• Static water level depths in both MW-1 and MW-2 were at 21.80 ft bTOC;
• Free product was not encountered during this sampling event;
Subsequent Monitoring Report ESP Project No. 23-00200-080
Naples #27510 (Cycle Shop)(Incident #24239) September 12, 2023
iv
• No analytes were detected above their respective GCLs;
• Several analytes were detected above 2L standards in MW-1;
• No analytes were detected above 2L standards in MW-2;
• PCE was detected above its 2L standard in on-site WSW-1 while several other analytes
were detected but were below 2L standards. It should be noted that PCE is not a
contaminant of concern related to this petroleum incident; and
• MW-8 has found to be filled with soil and thus could not be gauged or sampled.
The general trend in groundwater contaminant concentrations at the site have been steadily
decreasing since 2017. Soil exaction and removal activities performed in the area of MW-1 in
August 2021 may have assisted with lowering contaminant concentrations within that well.
Groundwater concentrations have remained above 2L standards; however, no GCLs have been
exceeded since before 2010.
Based on the above results, ESP offers the following recommendations:
• Continue to sample site monitoring wells on a semiannual basis to further track
concentration trends and plume stability; and
• Attempt to obtain permission to abandoned on-site water supply well WSW-1.
Subsequent Monitoring Report ESP Project No. 23-00200-080
Naples #27510 (Cycle Shop)(Incident #24239) September 12, 2023
1
1.0 INTRODUCTION
1.1 Site Setting
The Naples #27510 (Cycle Shop) is a developed commercial property (Tax Parcel PIN 9651573929)
located at 5858 Asheville Highway in Naples, Henderson County, North Carolina (see Figures 1 and
2). The site is presently occupied by the R&P Cycle facility and houses an approximate 4,000-sqft
motorcycle maintenance shop. An approximate 220-sqft shed that contains components of an inactive
on-site remediation system is located on the northern portion of the site. Three 6,000-gallon gasoline
USTs, and one 6,000-gallon diesel tank were reportedly removed from the site in 2004. The site is
bound to the north by an abandoned Burger King, to the west by Asheville Highway and beyond by
a Marathon gas station and single-family residences, to the south by undeveloped property, and to the
east by undeveloped woods.
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 Inner Piedmont 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 mica schist comprised of garnet, staurolite, kyanite, or sillimanite.
In-place chemical and physical weathering 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 Henderson County depicts soils on the site as
Bradson gravelly loam, 7 to 15 percent slopes (BaC); Codorus loam (CO); Hayesville loam, 7 to
15 percent slopes (HyC).
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.
Subsequent Monitoring Report ESP Project No. 23-00200-080
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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. 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 occur in the late summer and fall. Historically, shallow groundwater at the
site has historically been shown to flow to the south.
1.3 Surface Water
The closest surface water feature is a tributary of Mud Creek, which at its closest point is
approximately 50 feet north of the site’s boundary (see Figures 1 and 5).
1.4 Water Supply Wells
Based on a 2006 receptor survey conducted by Sheild Environmental Associates (Shield), 20
active water supply wells have been identified within a 1,000 ft radius of the site (see Figure 5).
Three of the water supply wells (WSW-1, WSW-3, and WSW-19) are located within 500 feet of
the source area with WSW-1 being located on site, approximately 75 feet upgradient of the source
area (see Table 1). It has been reported that the site obtains its drinking water from a municipal
source while WSW-1 is not used for drinking water but instead is used for operations at site’s the
R&P Cycle maintenance shop.
Subsequent Monitoring Report ESP Project No. 23-00200-080
Naples #27510 (Cycle Shop)(Incident #24239) September 12, 2023
3
2.0 SITE HISTORY
The following description of historical site activities was obtained from a report titled
“Federal/State-Lead Monitoring Report, Naples #27510 (Cycle Shop) (Incident #24239)” dated
April 3, 2019, by Terracon Consultants Inc. (Terracon).
• On July 17, 2001, Shield conducted a Phase II Limited Site Assessment, in which several
soil and groundwater samples were collected. Laboratory analytics indicated
concentrations of petroleum constituents above NCDEQ Action Levels.
• On September 19, 2001, Shield installed monitoring wells MW-1 through MW-4 and
one deep monitoring well, DMW-1, as part of the Phase II LSA. An additional 17
monitoring wells were installed by Shield between September 19, 2001 and December
18, 2002.
• On December 18, 2002, Shield mobilized to conduct an Aggressive Fluid Vapor
Recovery event (AFVR). During this event, a combined total of 1,844 gallons of
wastewater were removed from MW-1 and MW-9. An additional 35.60 gallons of LPH
was removed from MW-1 and MW-9.
• On March 26, 2004, Shield mobilized to conduct a groundwater sampling event from
MW-1 through MW-20. Concentrations of petroleum constituents were found above
their respective GCLs in MW-8, MW-10, and MW-14. Eight other monitoring wells
sampled contained constituents above 2L standards.
• Between June and September of 2009, a Soil Vapor Extraction (SVE) system consisting
of the system buildings, SVE blowers, and controls, was installed. The SVE system was
activated on September 29, 2009, and 2,411.7 pounds of VOCs were removed at system
startup. A groundwater sampling event also took place during this event. Laboratory
analysis indicated constituents above 2L standards in MW-1, MW-2, MW-8, MW-14,
and MW-16. However, no constituents were recorded as above their respective GCLs.
• Between April 13, 2010, and September 21, 2010, the SVE extracted an additional
4,084.9 pounds of VOCs from the site. This brought the total sum of VOCs removed
from the site to 7,116.4 pounds since SVE installation.
• Shield would continue to sample the monitoring well network and operate the SVE
system on multiple occasions between 2009 and 2016. In 2017, when Terracon assumed
responsibility for site remediation, the SVE system had removed a cumulative total of
48,260 pounds of VOCs from the site.
• Between July 13 and 14, 2017, Terracon mobilized to perform a groundwater sampling
event. Monitoring wells MW-1, MW-2, MW-8 through MW-10, MW-13, MW-14,
MW-16, MW-17, MW-19, MW-20, and DMW-1 were sampled. Several constituents
above 2L standards were detected in MW-1, MW-2, MW-8, MW-9, and MW-10. No
constituents were detected above GCLs.
• Between November 28 and 29, 2018, Terracon mobilized to perform a groundwater
sampling event on MW-1, MW-2, MW-8 through MW-10, MW-13, MW-14, MW-16,
MW-17, MW-19, MW-20, and DMW-1. Several constituents above their respective 2L
Subsequent Monitoring Report ESP Project No. 23-00200-080
Naples #27510 (Cycle Shop)(Incident #24239) September 12, 2023
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standards were detected in MW-1, MW-2, MW-9, MW-10, MW-16, MW-19, and
DMW-1. No constituents were detected above GCLs.
• On March 17, 2020, Terracon mobilized to perform a groundwater sampling event on
MW-1, MW-2, MW-8 through MW-10, MW-13, MW-14, MW-16, MW-17, MW-19,
MW-20, and DMW-1. Several constituents above 2L standards were detected in MW-1,
MW-2, MW-9, MW-10, and WSW-1. It should be noted that tetrachloroethene (PCE)
was detected in WSW-1. PCE is not a component of gasoline or diesel fuel and therefore
is unrelated to the subject release incident.
• On August 9, 2021, Terracon mobilized to perform well abandonments for several
monitoring wells, air sparge wells, and SVE wells. Monitoring wells MW-9 and MW-10
and air sparge/SVE wells AS-2, AS-3, SVE-4, SVE-5, and SVE-6 were formally
abandoned during this event.
• On August 10, 2021, Terracon re-mobilized to perform a soil excavation. A total of
169.83 tons of petroleum impacted soil was removed from site, and eight soil samples
were collected for laboratory analysis. The lab results indicated several constituents
above Maximum Soil Containment Concentration Levels (MSCCs).
Historical groundwater elevations and analytical results are provided in Appendix A.
Subsequent Monitoring Report ESP Project No. 23-00200-080
Naples #27510 (Cycle Shop)(Incident #24239) September 12, 2023
5
3.0 FIELD ACTIVITIES
On July 18, 2023, ESP performed the following field activities:
• Gauged static water levels in site monitoring wells MW-1 and MW-2. Although planned,
ESP was unable to gauge the static water level in MW-8 as the well column was filled with
soil and sand. Digging into the soil did not remove obstruction;
• Collected groundwater samples from monitoring wells MW-1 and MW-2, including a field
duplicate of MW-1. Although planned, ESP was unable to sample MW-8 due to the
aforementioned soil obstruction; and
• Collected a water sample from on-site water supply well WSW-1.
Sample locations are depicted in Figure 2. Field logbook entries along with water level survey,
groundwater sampling, and field instrument calibration 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 18, 2023, prior to purging or collecting groundwater samples, depth to groundwater from
the top of casing (TOC) within each 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 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, static water level depths in both wells were measured as 21.80 feet bTOC.
Groundwater elevations are based off top of casing elevations measured by previous consultants.
The general direction of shallow groundwater flow beneath the site has historically been shown to
be toward the south. Groundwater elevation contours could not be created since there were only
two monitoring wells gauged during the sampling event; however, shallow groundwater elevations
for MW-2 and MW-3 are shown on Figure 3.
3.2 Groundwater Sampling
On July 18, 2023, monitoring wells MW-1 and MW-2 were sampled for groundwater laboratory
analysis. Although planned, ESP was unable to obtain a groundwater sample from MW-8 due to
the previously mentioned soil obstruction within the well.
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
Subsequent Monitoring Report ESP Project No. 23-00200-080
Naples #27510 (Cycle Shop)(Incident #24239) September 12, 2023
6
instruments. Readings were taken at the start of purging and periodically until a minimum of three
well volumes were removed from the well. 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 VOCs by EPA Method 6200B including MTBE, ethylene
dibromide (EDB), and isopropyl ether (IPE).
3.3 Free Product Evaluation
During the July 18, 2023, sampling event, free product was not detected in any of the sampled
monitoring wells.
3.4 Water Supply Well Sampling
On July 18, 2023, a groundwater sample was collected from on-site water supply well WSW-1
(see Figure 2). The water supply well was sampled by locating a spigot as close to the supply well
head 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-preserved vial
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.
3.5 Field Quality Control Sampling and Analysis
A field duplicate groundwater sample was collected on July 18, 2023, from MW-1 and analyzed
for VOCs by EPA Method 6200B including MTBE, EDB, and IPE to assess variance between
collected samples.
Subsequent Monitoring Report ESP Project No. 23-00200-080
Naples #27510 (Cycle Shop)(Incident #24239) September 12, 2023
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4.0 ANALYTICAL RESULTS
Results of the laboratory analysis of groundwater samples from monitoring wells MW-1 and MW-
2 and water supply well WSW-1, are tabulated in Table 3. The analytical results are compared to
both 2L Standards and GCLs. The Pace laboratory analytical report is provided in Appendix C.
No analytes were detected in collected water samples at concentrations exceeding their respective
GCLs; however, several analytes were detected at concentrations greater than their respective 2L
standards (see Table 3 and Figure 4). A summary of the analytical results is as follows:
• MW-1 - benzene (1.1 µg/L) and naphthalene (47.3 µg/L) were both detected above their
respective 2L standards;
• MW-2 - no analytes were detected above 2L standards; and
• WSW-1 - chloroform (0.18 µg/L), dichlorodifluoromethane (0.53 µg/L), and 1,2,4-
trimethylbenzene (0.04 µg/L) were detected but were below their 2L standards while PCE
(4.3 µg/L) was detected above its 2L standard of 0.7 µg/L. It should be noted that PCE is
not a contaminant of concern related to this petroleum incident.
The general trend in groundwater contaminant concentrations at the site have been steadily
decreasing since 2017. Groundwater concentrations have remained above 2L Standards; however,
no GCLs have been exceeded since 2010.
Subsequent Monitoring Report ESP Project No. 23-00200-080
Naples #27510 (Cycle Shop)(Incident #24239) September 12, 2023
8
5.0 CONCLUSIONS AND RECOMMENDATIONS
Based on results of the above field activities and previous reporting, ESP concludes the following:
• Three of the water supply wells (WSW-1, WSW-3, and WSW-19) are located within 500
feet of the source area with WSW-1 being located on site;
• It has been reported that the site obtains its drinking water from a municipal source while
on-site WSW-1 is not used for drinking water but instead is used for operations at site’s
the R&P Cycle maintenance shop;
• Static water level depths in both MW-1 and MW-2 were at 21.80 ft bTOC;
• Free product was not encountered during this sampling event;
• No analytes were detected above their respective GCLs;
• Several analytes were detected above 2L standards in MW-1;
• No analytes were detected above 2L standards in MW-2;
• PCE was detected above its 2L standard in on-site WSW-1 while several other analytes
were detected but were below 2L standards. It should be noted that PCE is not a
contaminant of concern related to this petroleum incident; and
• MW-8 has found to be filled with soil and thus could not be gauged or sampled.
The general trend in groundwater contaminant concentrations at the site have been steadily
decreasing since 2017. Soil exaction and removal activities performed in the area of MW-1 in
August 2021 may have assisted with lowering contaminant concentrations within that well.
Groundwater concentrations have remained above 2L standards; however, no GCLs have been
exceeded since before 2010.
Based on the above results, ESP offers the following recommendations:
• Continue to sample site monitoring wells on a semiannual basis to further track
concentration trends and plume stability; and
• Attempt to obtain permission to abandoned on-site water supply well WSW-1.
Subsequent Monitoring Report ESP Project No. 23-00200-080
Naples #27510 (Cycle Shop)(Incident #24239) September 12, 2023
9
6.0 REFERENCES
Henderson County NC
WebGIS,https://henderson.roktech.net/gomaps4/?mapName=All%20Layers
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, September 29, 2021, Soil Excavation Letter Report, Naples #27510 (Cycle Shop) -
Incident No. 24239, U.S. Highway 25 & Interstate 26, Naples, Henderson County, North Carolina.
Terracon, May 1, 2020, Letter Report, Naples #27510 (Cycle Shop) – Incident No. 24239, U.S.
Highway 25 & Interstate 26, Naples, Henderson County, North Carolina.
Terracon, April 3, 2019, Federal/State-Lead Monitoring Report, Naples #27510 (Cycle Shop) -
(Incident # 24239), U.S. Highway 25 & Interstate 26, Naples, Henderson County, North Carolina.
Terracon, August 28, 2017, Federal/State-Lead Monitoring Report, Naples #27510 (Cycle Shop)
- (Incident # 24239), U.S. Highway 25 & Interstate 26, Naples, Henderson County, North Carolina.
FIGURES
0 350 700Feet
ESP Associates, Inc.
P.O. Box 7030Charlotte, NC 28241
Phone 704.583.4949
www.espassociates.com
SHEET TITLE
PROJECT
PROJECT NO.
SCALE
DRAWN BY
CHECKED BY
23-00200-080
ET
CWDATE08/14/2023
FIGURE 1USGS TOPOGRAPHIC SITE LOCATION MAPµAs Shown
NAPLES, NORTH CAROLINA
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NAPLES #27510 (CYCLE SHOP)
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P.O. Box 7030Charlotte, NC 28241
Phone 704.583.4949
www.espassociates.com
SHEET TITLE
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PROJECT NO.
SCALE
DRAWN BY
CHECKED BY
23-00200-080
ET
CWDATE08/14/2023
FIGURE 2SITE MAPµAs Shown
NAPLES, NORTH CAROLINA
SITE BOUNDARYMONITORING WELLMONITORING WELL (ABANDONED/DESTROYED)DEEP MONITORING WELLWATER SUPPLY WELL
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MW-5 MW-6
MW-12
MW-3
MW-2
MW-7
<<
MW-11
MW-4
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<
MW-9 <
MW-8
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MW-13
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MW-15
<
MW-14
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MW-17
MW-16
<
MW-20
<
MW-19
<
MW-18
ACTIVE USTs
FO
R
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USTs
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ED
ED
WSW-3
WSW-1
FORMERCANOPY
C
Y
CLE S
H
O
P
(N
APLES #27510)
EXCAVATIONLOCATION
0 25 50Feet
ESP Associates, Inc.
P.O. Box 7030Charlotte, NC 28241
Phone 704.583.4949
www.espassociates.com
SHEET TITLE
PROJECT
PROJECT NO.
SCALE
DRAWN BY
CHECKED BY
23-00200-080
ET
CWDATE08/14/2023
FIGURE 3GROUNDWATER ELEVATION MAPJULY 18, 2023µAs Shown
NAPLES, NORTH CAROLINA
SITE BOUNDARYMONITORING WELLMONITORING WELL (DESTROYED/NOT LOCATED)DEEP MONITORING WELLWATER SUPPLY WELL
All locations are approximate.
NAPLES #27510 (CYCLE SHOP)
&<
LEGEND:
&<
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MW-5 MW-6
MW-12
MW-3
MW-2
MW-7
<<
MW-11
MW-4
<MW-1
<MW-10
<
MW-9 <
MW-8
<
MW-13
<
MW-15
<
MW-14
<
<
MW-17
MW-16
<
MW-20
<
MW-19
<
MW-18
ACTIVE USTs
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USTs
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ED
ED
WSW-3
WSW-1
FORMERCANOPY
C
Y
C
LE S
H
O
P
(N
APLE
S #27510)
0 25 50Feet
ESP Associates, Inc.
P.O. Box 7030Charlotte, NC 28241
Phone 704.583.4949
www.espassociates.com
SHEET TITLE
PROJECT
PROJECT NO.
SCALE
DRAWN BY
CHECKED BY
23-00200-080
ET
CWDATE08/14/2023
FIGURE 4GROUNDWATER RESULTS MAPJULY 18, 2023µAs Shown
NAPLES, NORTH CAROLINA
SITE BOUNDARYMONITORING WELLMONITORING WELL (DESTROYED/NOT LOCATED)DEEP MONITORING WELLWATER SUPPLY WELL
All locations are approximate.
NAPLES #27510 (CYCLE SHOP)
&<
LEGEND:
&<
&<
ED
A
S
H
E
VILL
E HIG
H
W
A
Y
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WSW-TABOR
WSW-3
INTERSTATE 26WSW-20
WSW-4
WSW-2 WSW-19
WSW-5
WSW-6
WSW-8
WSW-7
WSW-14 WSW-16
WSW-17
WSW-9WSW-21
WSW-10WSW-11
WSW-13WSW-15WSW-18
0 160 320Feet
ESP Associates, Inc.
P.O. Box 7030Charlotte, NC 28241
Phone 704.583.4949
www.espassociates.com
SHEET TITLE
PROJECT
PROJECT NO.
SCALE
DRAWN BY
CHECKED BY
23-00200-080
ET
CWDATE08/14/2023
FIGURE 5WATER SUPPLY WELL RADIUS MAPµAs Shown
NAPLES, NORTH CAROLINA
SITE BOUNDARYWATER SUPPLY WELLINACTIVE WATER SUPPLY WELLFRESHWATER FORESTED/SHRUB WETLANDRIVERINE WETLAND
All locations are approximate.
NAPLES #27510 (CYCLE SHOP)
LEGEND:
ED
ED
TABLES
Table 1
Water Supply Well Information
Naples #27510 (Cycle Shop)
Naples, North Carolina
NCDEQ Incident No. 24239
Well
No.
Property
Owner
Mailing
Address
Property
Address
Distance from
Source Area
(ft)
Hydraulic
Relationship to
Source Area
Well
Status/Use
Municpal
Water
Parcel
PIN
WSW-1 Ronnie P. Gray
231 Hyder View Drive,
Hendersonville, NC 28791
R&P Cycle Shop
5858 Asheville Highway
Hendersonville, NC 28791
~100 feet North
(On-Site)Cross-gradient Active, Non-
Potable Unknown 9651573929
WSW-2 Daryl Edward & Sherry
McCall Thrift
76 Cureton Place
Hendersonville, NC 28791
73 Cureton Place
Hendersonville, NC 28791
~650 feet
Southwest Cross-gradient Active,
Potable Unknown 9651475405
WSW-3 Troy & Carmelita Alverson;
Alverson Family Trust
56 Cureton Place
Hendersonville, NC 28791
53 Cureton Place
Hendersonville, NC 28791
~300 feet
Southwest Cross-gradient Active,
Potable Unknown 9651474885
WSW-4 Troy & Carmelita Alverson;
Alverson Family Trust
56 Cureton Place
Hendersonville, NC 28791
59 Cureton Place
Hendersonville, NC 28791
~700 feet
Southwest Cross-gradient Active,
Potable Unknown 9651475702
WSW-5 Troy & Carmelita Alverson;
Alverson Family Trust
56 Cureton Place
Hendersonville, NC 28791
56 Cureton Place
Hendersonville, NC 28791
~800 feet
Southwest Cross-gradient Active,
Potable Unknown 9651471646
WSW-6 Shannon D. McCall 72 Cureton Place
Hendersonville, NC 28791
72 Cureton Place
Hendersonvllle, NC 28791
~900 feet
Southwest Cross-gradient Active,
Potable Unknown 9651473501
WSW-7 Pedro Mendoza 119 Leslie Way, Hendersonville
NC, 28792
244 Hickory Flats Drive,
Fletcher, NC 28732 ~980 feet North Upgradient Active,
Potable Unknown 9651581824
WSW-9 Creed Jr. & Gloria Ball 60 November Lane
Fletcher, NC 28732
60 November Lane
Fletcher, NC 28732
~1,000 feet
North Upgradient Active,
Potable Unknown 9651582971
WSW-11 Stoney Lloyd Baker 9 East Hill Drive,
Hendersonville, NC 28792
42 November Lane
Fletcher, NC 28732
~1,000 feet
North Upgradient Active,
Potable Unknown 9651583955
WSW-15 Boyd Lee Ledford 100 Silver Bluff Drive
Canton, NC 28716
19 November Lane
Fletcher, NC 28732 ~950 feet North Upgradient Active,
Potable Unknown 9651585749
WSW-19 Troy & Carmelita Alverson;
Alverson Family Trust
56 Cureton Place
Hendersonville, NC 28791
11 Cureton Place
Hendersonville, NC 28761
~500 feet
Southwest Cross-gradient Active, Non-
Potable Unknown 9651478568
WSW-20 Kasey Elaine Ponder 551 Phillip Henderson Road,
Rutherfordton, NC 28139
39 Cureton Place
Hendersonville, NC 28791 ~600 feet West Cross-gradient Active, Non-
Potable Unknown 9651486004
Notes:
Information obtained from previous monitoring report.
Table 2
Monitoring Well Construction and Groundwater Elevation Data
Naples #27510 (Cycle Shop)
Naples, North Carolina
NCDEQ Incident No. 24239
Well
ID Date Intalled Screened Interval
(ft BGS) a
Bottom of
Well
(ft BGS) a
Top of Casing
Elevation
(ft) a,b
Date Water
Level Measured
Depth to Water
from Top of
Casing
(ft bTOC)
Groundwater
Elevation
(ft)
Free Product
Thickness
(ft)
9/28/2016 20.65 2,066.63 --
7/13/2017 18.99 2,068.29 --
3/17/2020 17.00 2,070.28 --
7/18/2023 21.80 2,065.48 --
9/28/2016 20.53 2,065.90 --
7/13/2017 18.91 2,067.52 --
3/17/2020 17.10 2,069.33 --
7/18/2023 21.80 2,064.63 --
9/28/2016 17.01 2,060.50 --
7/13/2017 15.41 2,062.10 --
3/17/2020 13.73 2,063.78 --
7/18/2023
Notes:
a Top of casing elevations, screened intervals, and bottom of well measurements are from previous consultants' monitoring reports (see Appendix A).
-- - no measureable free product
BGS - below ground surface
ft - feet
ft bTOC - feet below TOC
FP - free product
TOC - top of casing
Well Obstructed
b Groundwater elevation adjusted for measureable free product by using the following calculation:
(TOC Elevation - Depth to water) + (FP thickness * 0.729), where 0.729 is the specific gravity for automotive gasoline.
MW-1
MW-2
MW-8
9/19/2001
11/13/2001
2/5/2002
15-30
15-30
8/23/2023
30
2,077.51
2,086.43
30
23
2,087.28
Table 3
Summary of Groundwater Analytical Results
Naples #27510 (Cycle Shop)
Naples, North Carolina
NCDEQ Incident No. 24239
(Page 1 of 1)
1 70 70 70 0.02 1,000 70 600 70 25 0.7 20 5 6 70 70 600 400 400 500 500 500
5,000 5,900 8,800 70,000 50 140,000 70,000 80,000 30,500 11,700 700 20,000 5,000 6,000 26,100 70,000 260,000 28,500 24,100 50,000 50,000 50,000
7/14/17 26 <4.0 7.5 <4.0 <4.0 NR <4.0 620 54 4.3J <4.0 <4.0 <4.0 250 120 29 58.0 630 200 890 NR NR
3/17/20 37 28 12 <4.0 <4.0 NR <4.0 680 68 7.5 <4.0 <4.0 91 360 150 <4.0 66 570 190 1,050 NR NR
7/18/23 1.1 10.1 4.8 <0.07 <0.15 <0.12 <0.07 71.3 15.7 NR <0.09 <0.05 <1.9 47.3 42.3 0.90 1.0 76.7 28.7 30.0 22.3 7.7
Field Duplicate
(MW-1)7/18/23 1.1 8.8 4.1 <0.07 <0.15 <0.12 <0.07 68.1 13.9 NR <0.09 <0.05 <1.9 44.3 36.7 0.76 1.0 66.2 25.4 28.2 21.0 7.2
7/14/17 <0.40 26.0 12.0 2.0 <0.40 NR <0.40 5.4 31.0 5.1 <0.40 <0.40 <0.40 40.0 83.0 0.76 0.65 250 93 34 NR NR
3/17/20 <0.40 14.0 12.0 <0.40 <0.40 NR <0.40 0.45J 7.8 3.0 <0.40 <0.40 17.0 16.0 13.0 <0.40 <0.40 7.9 4.5 2.45 NR NR
7/18/23 <0.08 2.9 7.4 <0.07 <0.15 <0.12 <0.07 <0.08 2.5 NR <0.09 <0.05 <1.9 3.9 4.1 <0.14 <0.09 5.5 2.8 0.52 <0.09 0.52
7/14/17 7.8 <0.40 0.98 <0.40 0.6 NR 0.81 <0.40 2.6 <0.40 <0.40 1.4 NR 7.6 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 NR NR
3/17/20 0.54 <0.40 0.67 <0.40 <0.40 NR <0.40 <0.40 0.97 <0.40 <0.40 <0.40 <0.40 0.76 <0.40 <0.40 <0.40 0.48J <0.40 0.54 NR NR
7/18/23 NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS
8/14/17 ND NR NR NR ND NR ND ND NR NR 5.9 NR ND ND NR NR ND NR NR ND NR NR
3/17/20 <0.40 <0.40 <0.40 <0.40 <0.40 NR <0.40 <0.40 <0.40 <0.40 5.7 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 NR NR
7/18/23 <0.08 <0.07 <0.09 0.18J <0.15 0.53 <0.07 <0.08 <0.11 NR 4.3 0.10J <1.9 <0.10 <0.10 <0.14 <0.09 0.04J <0.07 NR <0.09 <0.14
Notes:
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 18, 2023 event were obtained from prevous consultants reports.
<## - less than the method detection limit
µg/L - micrograms per liter
2L Standard - North Carolina 02L standard for groundwater
GCL - Gross Contaminant Level
J - Estimated concentration above the method detection limit and below the reporting limit.
NR - not reported
NS - not sampled Naphthalenen-PropylbenzeneBenzenen-Butylbenzenesec-ButylbenzeneDichlorodiflouromethaneo-Xylene1,2-Dibromoethane (EDB)Diisopropyl ether (IPE)ChloroformStyrenep-Isopropyltoluene (p-Cymene)Methylene Chloridem&p-XyleneToluene1,2,4-Trimethylbenzene1,3,5-TrimethylbenzeneXylene (Total)EthylbenzeneIsopropylbenzene (cumene)TetrachloroethyleneMethyl Tert-Butyl Ether (MTBE)WSW-1
GCL (µg/L)
Sample ID Collection Date
MW-1
MW-2
2L Standard (µg/L)
MW-8
APPENDIX A
Well/Sample
I.D.
Date Collected
(mm/dd/yy)EthylbenzeneChloroform1,2-Dichloropropanep-Isopropyltouene1 600 600 500 20 70 70 70 0.4 0.6 70 70 NE 6 70 70 0.7 70 400 400 5 0.4
5,000 260,000 84,500 85,500 20,000 6,900 8,500 70,000 400 600 70,000 25,000 NE 6,000 30,000 70,000 700 70,000 28,500 25,000 NE NE
3/24/15 215 306 484 1,717 3.5 ---ND ND ND --337 --ND -----
9/17/15 47.8 50.6 228 534 7.3 ---ND ND ND --139 --ND -----
3/10/16 127 215 735 1,629 ND ---ND ND ND --435 --ND -----
9/28/16 21.8 36.8 437 660 ND ---ND ND ND --260 --ND -----
7/14/17 26 58 620 890 <4.0 <4.0 7.5 <4.0 <4.0 <4.0 <4.0 54 4.3 J 250 120 29 <4.0 <4.0 630 200 --
3/17/20 37 66 680 1,050 <4.0 28 12 <4.0 <4.0 <4.0 <4.0 68 7.5 360 150 <4.0 <4.0 <4.0 570 190 91 <4.0
3/24/15 ND ND ND ND ND ---ND 0.74 ND --ND --1.3 -----
9/17/15 ND ND ND ND ND ---ND 0.57 ND --ND --1.1 -----
3/10/16 ND ND ND ND ND ---ND 0.66 ND --ND --1.1 -----
9/28/16 ND ND ND ND ND ---ND ND ND --ND --1.1 -----
7/14/17 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 0.46 J <0.40 0.60 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 1.2 <0.40 <0.40 <0.40 --
3/17/20 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40
3/24/15 ND 3 10.4 291 ND ---ND ND ND --128 --ND -----
9/17/15 ND ND 8.1 159.6 ND ---ND ND ND --81.8 --ND -----
3/10/16 ND 1.5 7.8 100.8 ND ---ND ND ND --82 --ND -----
9/28/16 ND ND 7.4 50.1 ND ---ND ND ND --63.2 --ND -----
7/14/17 <0.40 0.65 5.4 34 <0.40 26 12 2.0 <0.40 <0.40 <0.40 31 5.1 40 83 0.76 <0.40 0.63 250 93 --
3/17/20 <0.40 <0.40 0.45 J 2.45 <0.40 14 12 <0.40 <0.40 <0.40 <0.40 7.8 3.0 16 13 <0.40 <0.40 <0.40 7.9 4.5 17 0.54
3/24/15 ND ND ND ND ND ---ND ND ND --ND --ND -----
9/17/15 3.1 ND ND ND 2 ---ND ND 1.2 --ND --ND -----
3/10/16 ND ND ND ND ND ---ND ND ND --ND --ND -----
9/28/16 10.4 0.57 ND 4.4 2 ---ND ND 1.1 --20.9 --ND -----
7/14/17 7.8 <0.40 <0.40 <0.40 1.4 <0.40 0.98 <0.40 0.6 <0.40 0.81 2.6 <0.40 7.6 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 --
3/17/20 0.54 <0.40 <0.40 0.54 <0.40 <0.40 0.67 <0.40 <0.40 <0.40 <0.40 0.97 <0.40 0.76 <0.40 <0.40 <0.40 <0.40 0.48 J <0.40 <0.40 <0.40
3/24/15 182 359 376 740 5.9 ---ND ND 4.8 --142 --ND -----
9/17/15 190 147 325 711 6.3 ---ND ND 6 --153 --ND -----
3/10/16 226 1,610 1,240 5,170 ND ---ND ND ND --402 --ND -----
9/28/16 237 979 1,200 4,430 ND ---ND ND ND --627 --ND -----
7/14/17 250 2,400 3,200 11,600 <50 <50 <50 <50 <50 <50 <50 130 <50 880 350 410 <50 <50 2,700 800 --
3/17/20 240 1,700 3,100 9,100 <40 72 <40 <40 <40 <40 <40 120 <40 930 280 <40 <40 <40 2,200 600 620 <40
MW-1 Methylene chlorideDMW-1
MW-2 HexachlorobutadieneMW-8
MW-9 Methyl-tert-butyl ether (MTBE)Diisopropyl ether (IPE)n-Butylbenzenesec-ButylbenzeneStyrene1,2,4-Trimethylbenzene1,3,5-TrimethylbenzeneIsopropylbenzeneNaphthalene2L Standard (ug/L)
GCL (ug/L)
TABLE 1
Summary of Groundwater Analytical Results
Naples #27510/Cycle Shop
Naples, North Carolina
Terracon Project No. 86179005A
NCDEQ Incident No. 24239
n-Propylbenzene1,2-DichloroethaneAnalytical Method
1,2,4-TrichlorobenzeneTetrachloroetheneContaminant of Concern →BenzeneTolueneXylenes (Total)VOCs - SM 6200B
Well/Sample
I.D.
Date Collected
(mm/dd/yy)EthylbenzeneChloroform1,2-Dichloropropanep-Isopropyltouene1 600 600 500 20 70 70 70 0.4 0.6 70 70 NE 6 70 70 0.7 70 400 400 5 0.4
5,000 260,000 84,500 85,500 20,000 6,900 8,500 70,000 400 600 70,000 25,000 NE 6,000 30,000 70,000 700 70,000 28,500 25,000 NE NE
3/24/15 287 267 31.6 201.7 9.6 ---ND ND 37.6 --50 --ND -----
9/17/15 891 369 158 347 1.8 ---ND ND 18.1 --51.4 --ND -----
3/10/16 7,020 13,300 1,430 7,050 ND ---ND ND 143 --459 --ND -----
9/28/16 8,570 9,010 1,490 5,580 ND ---ND ND 127 --602 --ND -----
7/14/17 3,700 2,800 730 2,490 <25 <25 <25 <25 <25 <25 38 23 J <25 190 45 44 <25 <25 330 96 --
3/17/20 530 21 44 196 <4.0 <4.0 <4.0 <4.0 <4.0 <4.0 <4.0 4.8 J <4.0 39 4.9 J <4.0 <4.0 <4.0 32 11 <4.0 <4.0
3/24/15 ND ND ND ND 0.77 ---ND ND ND --ND --0.78 -----
9/17/15 ND ND ND ND 0.62 ---ND ND ND --ND --0.6 -----
3/10/16 ND ND ND ND 0.96 ---ND ND ND --ND --1.2 -----
9/28/16 ND ND ND ND ND ---ND ND ND --ND --ND -----
7/14/17 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 --
3/17/20 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40
3/24/15 ND ND ND ND 1.5 ---ND ND ND --ND --ND -----
9/17/15 ND ND ND ND 3.4 ---ND ND 0.51 --ND --ND -----
3/10/16 ND ND ND ND 24.8 ---ND ND 4 --ND --ND -----
9/28/16 ND ND ND ND 0.91 ---ND ND ND --ND --ND -----
7/14/17 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 --
3/17/20 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40
3/24/15 ND 0.61 ND 0.53 7.7 ---ND ND 0.51 --ND --ND -----
9/17/15 ND 0.7 ND ND 24.3 ---ND ND 0.72 --ND --ND -----
3/10/16 ND ND ND ND 6.9 ---ND ND 0.75 --ND --ND -----
9/28/16 ND 1.6 ND 1.9 25.5 ---ND ND 1.3 --ND --ND -----
7/14/17 <0.40 <0.40 <0.40 <0.40 4.6 <0.40 0.52 <0.40 <0.40 <0.40 1.2 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 --
3/17/20 <0.40 <0.40 <0.40 <0.40 1.4 <0.40 <0.40 <0.40 <0.40 <0.40 2.5 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40
3/24/15 ND ND ND ND 0.76 ---ND ND ND --ND --ND -----
9/17/15 ND ND ND ND 1.3 ---ND ND ND --ND --ND -----
3/10/16 ND ND ND ND ND ---ND ND ND --ND --ND -----
9/28/16 ND ND ND ND 0.94 ---ND ND ND --ND --ND -----
7/14/17 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 --
3/17/20 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40Methylene chlorideHexachlorobutadieneVOCs - SM 6200B
Naples, North Carolina
Terracon Project No. 86179005A
NCDEQ Incident No. 24239
Analytical Method
TABLE 1
Summary of Groundwater Analytical Results
Naples #27510/Cycle Shop
MW-14
MW-16
MW-17
GCL (ug/L)1,3,5-TrimethylbenzeneTolueneXylenes (Total)Methyl-tert-butyl ether (MTBE)n-Butylbenzenesec-Butylbenzene1,2-DichloroethaneMW-10
MW-13
2L Standard (ug/L)Diisopropyl ether (IPE)IsopropylbenzeneNaphthalenen-PropylbenzeneStyreneContaminant of Concern →BenzeneTetrachloroethene1,2,4-Trichlorobenzene1,2,4-Trimethylbenzene
Well/Sample
I.D.
Date Collected
(mm/dd/yy)EthylbenzeneChloroform1,2-Dichloropropanep-Isopropyltouene1 600 600 500 20 70 70 70 0.4 0.6 70 70 NE 6 70 70 0.7 70 400 400 5 0.4
5,000 260,000 84,500 85,500 20,000 6,900 8,500 70,000 400 600 70,000 25,000 NE 6,000 30,000 70,000 700 70,000 28,500 25,000 NE NE
3/24/15 NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS
9/17/15
3/10/16
9/28/16
7/14/17
3/17/20
3/24/15 ND ND ND ND 1.9 ---ND ND ND --ND --ND -----
9/17/15 ND ND ND ND 2 ---ND ND ND --ND --ND -----
3/10/16 ND ND ND ND 1.9 ---ND ND ND --ND --ND -----
9/28/16 ND ND ND ND 2.2 ---ND ND ND --ND --ND -----
7/14/17 <0.40 <0.40 <0.40 <0.40 2.4 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 --
3/17/20 <0.40 <0.40 <0.40 <0.40 0.90 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40
3/24/15 ND ND ND ND 19.4 ---ND ND 15.6 --ND --ND -----
9/17/15 ND ND ND ND 4.6 ---ND ND 4.1 --ND --ND -----
3/10/16 ND ND ND ND ND ---ND ND ND --ND --ND -----
9/28/16 ND ND ND ND 1.4 ---ND ND 1.3 --ND --ND -----
7/14/17 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 --
3/17/20 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40
3/24/15 ND ND ND ND ND ---ND ND ND --ND --7 -----
9/17/15 ND ND ND ND ND ---ND ND ND --ND --6.7 -----
3/10/16 ND ND ND ND ND ---ND ND ND --ND --7.2 -----
9/28/16 ND ND ND ND ND ---ND ND ND --ND --5.5 -----
8/14/17 ND ND ND ND ND ---ND ND ND --ND --5.9 -----
3/17/20 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 5.7 <0.40 <0.40 <0.40 <0.40 <0.40
Notes:
Bold value indicates a detection above laboratory method detection limit
Concentrations reported with a "J" qualifier were estimated by the laboratory
Yellow shading denotes levels above the GCL.BenzeneTolueneXylenes (Total)Methyl-tert-butyl ether (MTBE)Terracon Project No. 86179005A
NCDEQ Incident No. 24239
Analytical Method
TABLE 1
Summary of Groundwater Analytical Results
Naples #27510/Cycle Shop
* Groundwater analytical data from 3/24/15 through 9/28/16 was extracted from the December 2016 Shield Engineering monitoring report.
Naples, North Carolina
Methylene chlorideHexachlorobutadieneVOCs - SM 6200B
Not Sampled - Could Not Locate
Not Sampled - Could Not Locate
Not Sampled - Could Not Locate
Not Sampled - Could Not Locate
MW-18
Not Sampled- Could Not Locate 1,2,4-Trimethylbenzene1,3,5-Trimethylbenzene2L Standard (ug/L)
GCL (ug/L)Naphthalenen-PropylbenzeneStyreneTetrachloroethene1,2,4-Trichlorobenzenen-Butylbenzenesec-Butylbenzene1,2-DichloroethaneDiisopropyl ether (IPE)IsopropylbenzeneContaminant of Concern →
Grey shading denotes levels above the 2L standard.
MW-19
MW-20
WSW-1
All results presented in micrograms per liter (µg/L)
< - denotes less than sample detection limit.
NE - denotes not established
ND - denotes not detected
NS - denotes not sampled
"-" denotes not analyzed.
TABLE 1
Naples #27510 (Cycle Shop)
Naples, North Carolina
Terracon Project No. 86179005B
NCDEQ Incident No. 24239
Well ID Date Intalled Date Water Level
Measured
Well Casing Depth
(ft. BGS)
Screened Interval
(x to y ft. BGS)
Bottom of Well
(ft. BGS)
Top of Casing
Elevation (ft.)
Depth to Water
from Top of
Casing (ft.)
Free Product
Thickness (ft.)
Groundwater
Elevation (ft.)Well Status
3/24/2015 17.69 -2069.59
9/17/2015 20.82 -2066.46
3/10/2016 16.63 -2070.65
9/28/2016 20.65 -2066.63
7/13/2017 18.99 -2068.29
3/17/2020 17.00 -2070.28
3/24/2015 17.89 -2069.85
9/17/2015 20.95 -2066.79
3/10/2016 16.79 -2070.95
9/28/2016 20.78 -2066.96
7/13/2017 19.08 -2068.66
3/17/2020 17.20 -2070.54
3/24/2015 17.67 -2068.76
9/17/2015 20.73 -2065.70
3/10/2016 16.77 -2069.66
9/28/2016 20.53 -2065.90
7/13/2017 18.91 -2067.52
3/17/2020 17.10 -2069.33
3/24/2015 14.03 -2063.48
9/17/2015 17.30 -2060.21
3/10/2016 13.32 -2064.19
9/28/2016 17.01 -2060.50
7/13/2017 15.41 -2062.10
3/17/2020 13.73 -2063.78
3/24/2015 15.99 -2068.90
9/17/2015 19.06 -2065.83
3/10/2016 15.18 -2069.71
9/28/2016 18.83 -2066.06
7/13/2017 17.30 -2067.59
3/17/2020 14.50 -2070.39
8/9/2021 18.65 -2066.24
Monitoring Well Construction Information and Groundwater Elevations
2,087.28
Active
Abandoned
2,086.43
2,087.74
2,084.89
2,077.51
Active
Active
Active
MW-1 9/19/2001 0 to 15 15 to 30 30
DMW-1 11/13/2001 0 to 39 39 to 44 44
MW-2 11/13/2001 0 to 15 15 to 30 30
MW-8 2/6/2002 0 to 8 8 to 23 23
MW-9 2/6/2002 0 to 14 14 to 29 29
Page 1 of 3
TABLE 1
Naples #27510 (Cycle Shop)
Naples, North Carolina
Terracon Project No. 86179005B
NCDEQ Incident No. 24239
Well ID Date Intalled Date Water Level
Measured
Well Casing Depth
(ft. BGS)
Screened Interval
(x to y ft. BGS)
Bottom of Well
(ft. BGS)
Top of Casing
Elevation (ft.)
Depth to Water
from Top of
Casing (ft.)
Free Product
Thickness (ft.)
Groundwater
Elevation (ft.)Well Status
Monitoring Well Construction Information and Groundwater Elevations
3/24/2015 15.84 -2069.72
9/17/2015 19.19 -2066.37
3/10/2016 15.01 -2070.55
9/28/2016 19.98 -2065.58
7/13/2017 17.35 -2068.21
3/17/2020 15.32 -2070.24
8/9/2021 19.65 2065.91
3/24/2015 9.35 -2065.61
9/17/2015 12.40 -2062.56
3/10/2016 9.19 -2065.77
9/28/2016 11.64 -2063.32
7/13/2017 10.75 -2064.21
3/17/2020 9.50 -2065.46
3/24/2015 3.55 -2075.39
9/17/2015 17.35 -2061.59
3/10/2016 13.46 -2065.48
9/28/2016 10.15 -2068.79
7/13/2017 14.80 -2064.14
3/17/2020 13.41 -2065.53
3/24/2015 12.59 -2065.94
9/17/2015 15.22 -2063.31
3/10/2016 14.36 -2064.17
9/28/2016 16.06 -2062.47
7/13/2017 15.57 -2062.96
3/17/2020 14.70 -2063.83
3/24/2015 11.58 -2067.10
9/17/2015 13.70 -2064.98
3/10/2016 15.88 -2062.80
9/28/2016 9.72 -2068.96
7/13/2017 17.03 -2061.65
3/17/2020 15.96 -2062.72
0 to 15 15 to 30 30 2,085.56 Abandoned
Active
Active
Active
2,074.967 to 22 22
2,078.53
2,078.94
Active
MW-10 2/5/2002
MW-13 9/23/2003 0 to 7
MW-14 11/6/2002 0 to 14 14 to 29 29
MW-16 12/18/2002 0 to 11 11 to 26 26
MW-17 1/20/2003 0 to 12 12 to 27 27 2,078.68
Page 2 of 3
TABLE 1
Naples #27510 (Cycle Shop)
Naples, North Carolina
Terracon Project No. 86179005B
NCDEQ Incident No. 24239
Well ID Date Intalled Date Water Level
Measured
Well Casing Depth
(ft. BGS)
Screened Interval
(x to y ft. BGS)
Bottom of Well
(ft. BGS)
Top of Casing
Elevation (ft.)
Depth to Water
from Top of
Casing (ft.)
Free Product
Thickness (ft.)
Groundwater
Elevation (ft.)Well Status
Monitoring Well Construction Information and Groundwater Elevations
3/24/2015
9/17/2015
3/10/2016
9/28/2016
7/13/2017
3/17/2020
3/24/2015 9.78 -2067.28
9/17/2015 10.33 -2066.73
3/10/2016 9.72 -2067.34
9/28/2016 10.69 -2066.37
7/13/2017 9.52 -2067.54
3/17/2020 9.43 -2067.63
3/24/2015 20.98 -2056.47
9/17/2015 22.93 -2054.52
3/10/2016 15.47 -2061.98
9/28/2016 20.78 -2056.67
7/13/2017 13.72 -2063.73
3/17/2020 13.25 -2064.20
AS-01 9/26/2004 NA 0 to 37.5 37.5 to 40 40 NM ---Inactive
AS-02 9/27/2004 8/9/2021 0 to 37.5 37.5 to 40 40 NM ---Abandoned
AS-03 9/27/2004 8/9/2021 0 to 37.5 37.5 to 40 39 NM ---Abandoned
SVE-01 9/26/2004 NA 0 to 10 10 to 20 20 NM ---Inactive
SVE-02 9/26/2004 NA 0 to 5 5 to 20 20 NM ---Inactive
SVE-03 9/27/2004 NA 0 to 10 10 to 30 30 NM ---Inactive
SVE-04 9/27/2004 8/9/2021 0 to 5 5 to 30 17 NM ---Abandoned
SVE-05 9/27/2004 8/9/2021 0 to 5 5 to 30 24 NM ---Abandoned
SVE-06 9/27/2004 8/9/2021 0 to 5 5 to 30 20 NM ---Abandoned
Notes:
1. "-" indicates no free product was measured
2. BGS = Below Ground Surface
3. Groundwater elevation data from 3/24/2015 to 9/28/2016 was extracted from the December 2016 Shield Engineering report
4. NA = not applicable
5. NM = Not measured
Active
Active
Active
Unable to Locate
Unable to Locate
2,076.99MW-18 1/20/2003 0 to 10 10 to 25 25
Unable to Locate
Unable to Locate
Unable to Locate
Unable to Locate
2,077.45
MW-19 1/20/2003 0 to 10 10 to 25 25 2,077.06
MW-20 1/20/2003 0 to 12 12 to 27 27
Page 3 of 3
APPENDIX B
APPENDIX C
ESP Corporate Office
3475 Lakemont Boulevard
Fort Mill, SC 29708
803.802.2440
Mailing Address: P.O. Box 7030 Charlotte, NC 28241
800.960.7317 | www.espassociates.com
Concord
7144 Weddington Rd. NW
Suite 110
Concord, NC 28027
704.793.9855
Cornelius
20484 Chartwell Center Dr.
Suite D
Cornelius, NC 28031
704.649.2863
Raleigh
2200 Gateway Centre Blvd.
Suite 216
Morrisville, NC 27560
919.678.1070
Greensboro
7011 Albert Pick Rd
Suite E
Greensboro, NC 27409
336.334.7724
Wilmington
211 Racine Drive
Suite 101
Wilmington, NC 28403
910.313.6648
Charleston
2154 North Center Street
Suite E-503
North Charleston, SC 29406
843.714.2040
Nashville
500 Wilson Pike Circle
Suite 310
Brentwood, TN 37027
615.760.8300
Pittsburgh
One Williamsburg Place
Suite G-5, Box 13
Warrendale, PA 15086
724.462.6606
Bradenton
518 13th Street
West Bradenton, FL 34205
941.345.5451
Indianapolis
8673 Bash Street
Indianapolis, IN 46256
317.537.6979
Albuquerque
1203 West Ella Drive
Corrales, NM 87048
505.314.1322
Birmingham
291 Cahaba Valley Parkway North Suite A
Pelham, AL 35124
205.664.8498
Vickrey & Associates, LLC - An ESP Company
San Antonio
12970 Country Parkway
San Antonio TX 78216
210.349.3271
Austin
3600 West Parmer Lane
Suite 175
Austin, TX 78727
512.494.8014
McAllen
1216 East Jasmine Avenue
Suite C
McAllen, TX 78501
956.340.0045