WS-4653_15063_CA_MRP_20180629

Federal/State-Lead Groundwater Monitoring Report
Williams Grocery
2425 US Highway 21
Hamptonville, Yadkin County, North Carolina
NCDEQ Incident #15063
ATC Project #SLP1506301

June 29, 2018

TABLE OF CONTENTS

1.0 SITE IDENTIFICATION .......................................................................................4
2.0 EXECUTIVE SUMMARY .....................................................................................5
3.0 SITE DESCRIPTION .............................................................................................6
3.1 Site Characterization ................................................................................6
3.2 Site Background .......................................................................................6
3.3 Site and Regional Geology ......................................................................7
3.4 Site and Regional Hydrogeology .............................................................7
4.0 GROUNDWATER CHARACTERIZATION.......................................................8
4.1 Water Supply Wells .................................................................................8
4.2 Groundwater Levels .................................................................................9
4.3 Groundwater Quality ...............................................................................9
5.0 CONCLUSIONS AND RECOMMENDATIONS .................................................10
TABLES
Table 1 Water Supply Well Information
Table 2 Summary of Water Supply Well Analytical Results
Table 3 Historical Water Supply Well Analytical Results
Table 4 Monitoring Well Construction Details
Table 5 Groundwater Elevation Data
Table 6 Natural Attenuation Parameters
Table 7 Summary of Current Groundwater Analytical Results
Table 8 Historical Groundwater Analytical Results

FIGURES

Figure 1 Site Location Map
Figure 2 Water Supply Well Location Map
Figure 3 Site Map
Figure 4 Groundwater Elevation Contour Map
Figure 5 Benzene Isoconcentration Contour Map
Figure 6 Toluene Isoconcentration Contour Map
Figure 7 Ethylbenzene Isoconcentration Contour Map
Figure 8 Total Xylenes Isoconcentration Contour Map
Figure 9 MTBE Isoconcentration Contour Map
Figure 10 Naphthalene Isoconcentration Contour Map
Figure 11 Additional Contaminants of Concern

APPENDICES

Appendix A Field Notes
Appendix B Laboratory Analytical Results

Federal-State Lead Groundwater Monitoring Report June 29, 2018
Williams Grocery – NCDEQ Incident #15063 ATC Project #SLP1506301
5
2.0 EXECUTIVE SUMMARY
ATC Associates of North Carolina, P.C. (ATC) has completed a Federal/State-Lead Groundwater
Monitoring Report (GMR) documenting a November 7, 2017, monitoring event of seven on-site
monitoring wells at Williams Grocery, located at 2425 US Highway 21, Hamptonville, Yadkin
County, North Carolina. The groundwater monitoring event is being performed based on an October
2, 2017, Task Authorization (TA-01) by the Trust Fund Branch of the Underground Storage Tank
(UST) Section, Division of Waste Management, North Carolina Department of Environmental
Quality (NCDEQ). The work is being performed as part of the State Lead Contract #N17004
between NCDEQ and ATC.

A release was discovered in February 1994, from the UST system during removal of a 2,000-gallon
gasoline UST and a 500-gallon kerosene UST. Three 550-gallon gasoline USTs were filled in-place
with concrete, and were later removed.

ATC collected groundwater samples from seven site-related monitoring wells. Monitoring well
MW-8 was scheduled to be sampled, however, it could not be located. The groundwater monitoring
wells were gauged for depth to water, purged, and sampled. Free product was not detected in the
monitoring well network. ATC also collected samples from water supply wells located at 2425 US
Highway 21 (site/WSW-1), 1704 Hamptonville Road (WSW-3). Wells located at 1708
Hamptonville Road (WSW-5), and 1717 Hamptonville Road (WSW-6) could not be sampled due to
occupant absence. The well located at 2405 US Highway 21 (WSW-7) could not be sampled due to
ATC being unable to gain approval from the property owner at the time of sampling. The
groundwater and water supply well samples were analyzed for volatile organic compounds (VOCs).
Concentrations were compared to the North Carolina Groundwater Standards (2L Standards; Title
15A, NCAC, Subchapter 2L, Part .0202) and Gross Contaminant Levels (GCLs). The findings from
the groundwater monitoring event indicate the following:

 Free-phase petroleum product was not observed in the groundwater monitoring network;
 Petroleum constituents were not detected in any of the sampled water supply wells;
 Concentrations of benzene and 1,2-dibromoethane were detected above GCLs in monitoring
wells MW-1 and MW-3;
 Monitoring well MW-1 contained concentrations of 1,2-dichloroethane and methyl tertiary
butyl ether (MTBE) above GCLs;
 Monitoring well MW-1 contained concentrations of 13 additional compounds above 2L
Standards;
 Monitoring well MW-2 contained four compounds above 2L Standards;
 Monitoring well MW-3 contained seven compounds above 2L Standards;
 Monitoring well RW-1 contained concentrations of five compounds above 2L Standards;
 Monitoring well MW-5 did not contain any compounds above 2L Standards;
 Monitoring wells MW-4 and MW-6 did not contain detectable concentrations of petroleum
compounds.

Based on the detected concentrations, ATC recommends the installation of air sparge wells for use
during aggressive fluid vapor recovery (AFVR) events. The air sparge wells would be used to
volatilize petroleum concentrations for collection during future events. Bioremedial and
Federal-State Lead Groundwater Monitoring Report June 29, 2018
Williams Grocery – NCDEQ Incident #15063 ATC Project #SLP1506301
6
bioaugmentation methods including enzyme injections or chemical oxidation should be considered
to reduce dissolved phase petroleum concentrations.

3.0 SITE DESCRIPTION
3.1 Site Characterization
The NCDEQ retained ATC to provide environmental consulting services for Williams Grocery,
located at 2425 US Highway 21, Hamptonville, Yadkin County, North Carolina. Figure 1 depicts
the site location on a topographic map. The site is currently vacant with a residential structure on
the property.

3.2 Site Background
The site formerly utilized a UST system consisting of one (1) 2,000-gallon gasoline UST, three
(3) 550-gallon gasoline USTs, and one (1) 550-gallon kerosene UST. The 2,000-gallon gasoline
UST and the 550-gallon kerosene UST were removed from the ground in February, 1994. The
three 550-gallon gasoline USTs were initially closed in place due to stability of nearby
foundations. Closure sampling was performed during tank closure activities. Total petroleum
hydrocarbon (TPH) concentrations ranged from 42 parts per million (ppm) as gasoline range
organics (GRO), to 25,000 ppm as GRO and diesel range organics (DRO).

Groundwater monitoring wells MW-1 through MW-3 were installed and sampled in November,
1996. Free product was detected in monitoring wells MW-1 and MW-3 during initial sampling.
Petroleum compounds were detected in monitoring well MW-2 at concentrations that exceeded
the 2L Standard.

The three USTs that were filled with concrete were removed in February 1997. During
excavation activities, 144 tons of petroleum impacted soils were removed. Vertical and
horizontal extent sampling detected concentrations ranging from 2,500 ppm to 13,000 ppm TPH
GRO.

Monitoring wells MW-4 through MW-11 were installed and sampled in April 1998. Initial
sampling indicated concentrations above 2L Standards in monitoring wells MW-4, MW-5, MW-
8, and MW-9.

Monitoring well RW-1 was installed in June 2010 in the source area. Initial sampling of well
RW-1 showed concentrations of benzene, MTBE, and 1,2-Dibromoethane above 2L Standards
and GCLs. Eleven additional compounds were detected above 2L Standards in the well.

A Groundwater Monitoring Report completed by TerraQuest in June 2012, identified 11 potable
water supply wells within 1,000 feet of the site. According to prior reports, a Point-of-Entry
(POE) filtration system was installed on water supply well WSW-1.

Subsequent groundwater monitoring events have been performed at the site. Monitoring wells
MW-7 through MW-11 could not be located for multiple sampling events. The most recent
groundwater monitoring event, performed in 2015, detected free product in monitoring well
MW-3 and RW-1. Concentrations of benzene, MTBE, and 1,2-Dibromoethane were detected
Federal-State Lead Groundwater Monitoring Report June 29, 2018
Williams Grocery – NCDEQ Incident #15063 ATC Project #SLP1506301
7
above GCLs in monitoring well MW-1. Concentrations of petroleum compounds exceeded 2L
Standards in monitoring well MW-2.

According to a Groundwater Monitoring Report completed by S&ME, approximately 18
aggressive fluid vapor recovery (AFVR) events were completed at the site from June 1997,
through November 1998. According to prior reports provided to ATC, approximately four
MMPE events were performed at the site from July 2001 through August 2004. An MMPE event
was most recently completed at the site as part of S&ME’s 2016 field activities from June 20,
2016, to June 24, 2016. According to data from the Groundwater Monitoring Report, the five
MMPE events generated 2,068 gallons of hydrocarbons as free product and as vapors.

3.3 Site and Regional Geology

According to the Geologic Map of North Carolina, produced by the State of North Carolina in
1985, the site lies in the Brushy Mountains of the Inner Piedmont Physiographic Province. The
rock type at the site has been identified as metamorphosed granitic rock. The shallow subsurface
in most areas of the Piedmont contains residual soil overburden, including structure-free
residuum, saprolite, and partially weathered rock (PWR) that derive from in-place weathering of
the crystalline bedrock. In areas near creeks and rivers, alluvium derived from weathered
residual soil is often present and such material may be present near drainages at the property.
Saprolite and PWR typically contain some relict structures from the original rock material. Depth
to rock ranges from ground surface at occasional outcrops to depths greater than 100 feet in areas
of easily weathered rock.

3.4 Site and Regional Hydrogeology

The shallow aquifer occurrence varies in depth from ground surface at springs, creeks, and rivers
to as deep as 50 feet or more beneath upland surfaces in some parts of the Piedmont. Water in the
alluvium or unconsolidated residual material, including saprolite and PWR, usually behaves as
an unconfined, or water table, aquifer and will yield water with head elevation equivalent to the
first elevation where water was encountered. Permeability varies with lithology and is typically
relatively low in residual soils, with higher permeability in saprolite or PWR due to relict rock
texture and variable susceptibility to weathering exhibited by different minerals in the rock.
Groundwater flow in residual soils or alluvium is usually in rough concurrence with local
topographic conditions and is toward local drainage features.

The bedrock fractures or other planar features generally constitute the bedrock aquifer, with the
surrounding rock material being effectively impermeable. Along with fractures, contacts between
rock bodies probably constitute zones of significant groundwater occurrence in the bedrock. The
surrounding material and overlying residuum tend to make the bedrock aquifer a semi-confined
aquifer. That is, the overlying water and soil weight normally results in pressure that causes
water in a borehole which intersects a fracture or other feature to rise above the elevation of the
fracture or feature. Such features may not occur on predicable trends, at the same elevations, or
even be present or directly connected in separate boreholes. In areas adjacent to creeks the
bedrock groundwater generally discharges to the residuum or alluvium and then into the surface
water. In upland areas away from surface water drainages, the bedrock aquifer is generally
Federal-State Lead Groundwater Monitoring Report June 29, 2018
Williams Grocery – NCDEQ Incident #15063 ATC Project #SLP1506301
8
recharged by downward infiltration of residuum or alluvial aquifer water at locations where
fractures intersect the bedrock surface.

For sites in the Piedmont, when gradient conditions are discussed, upgradient sites are in
locations which could, based on topographic analysis, have shallow groundwater migration from
them toward the project site. Side-gradient sites are nearby sites with equivalent elevation to the
project site, which would be unlikely to have groundwater migration from them toward the
project site, and downgradient sites are nearby sites which likely receive groundwater migration
from beneath the project property. In most cases for the property, much of the surrounding area,
and especially areas to the north, would be considered uppgradient. Based on groundwater
gauging data from the November 7, 2017, groundwater monitoring event, groundwater is
expected to flow to the south-southeast toward a tributary to South Deep Creek. Groundwater
depth ranged from approximately 20.91 feet below ground surface (ft bgs) in monitoring well
MW-6, to 25.12 ft bgs in monitoring well MW-4.

4.0 GROUNDWATER CHARACTERIZATION
4.1 Water Supply Wells
Eleven water supply wells have been previously identified within 1,000 feet from the site.
Figure 2 depicts the location of the water supply wells on an aerial overlay with radial distances
from the site. Table 1 summarizes water supply well information. ATC also collected samples
from water supply wells located at 2425 US Highway 21 (site/WSW-1), 1704 Hamptonville Road
(WSW-3). Wells located at 1708 Hamptonville Road (WSW-5), and 1717 Hamptonville Road
(WSW-6) could not be sampled due to occupant absence. The well located at 2405 US Highway 21
(WSW-7) could not be sampled due to ATC being unable to gain approval from the property owner
at the time of sampling.

Each water supply well sample was collected from outdoor spigots after the spigot was allowed
to purge for five minutes. The water samples were collected in laboratory-supplied, preserved
containers; entered into chain of custody control; placed on ice; and shipped to North Carolina
accredited Con-Test Analytical laboratory in East Longmeadow, Massachusetts. Sample
analytical results from supply well sampling did not identify detectable concentrations of
petroleum constituents. Table 2 summarizes current water-supply well analytical results, and
Table 3 summarizes historical water supply well analytical results. Field notes from the
November 7, 2017, groundwater monitoring event are presented in Appendix A.

As part of ATC’s quality assurance and quality control (QA and QC) measures, a data review of the
laboratory reports was conducted. During the review, it was found that the samples were received
from the laboratory in acceptable condition and properly preserved. The samples were analyzed
within correct holding times and reported within the lab report, and the chain of custody was
properly completed by all parties. The laboratory QC report shows that an internal blank was
analyzed for each method that was used for the original samples. The laboratory fortified blank
(LFB) and laboratory control sample (LCS) data results were also provided for each analytical
method. A field blank was also analyzed during groundwater monitoring activities. Refer to the
laboratory reports in Appendix B for details regarding QA results for the laboratory samples and
any noted exceptions. Overall, ATC concludes that the laboratory results are usable and any
exceptions do not significantly impact the conclusions presented in this report.
Federal-State Lead Groundwater Monitoring Report June 29, 2018
Williams Grocery – NCDEQ Incident #15063 ATC Project #SLP1506301
9

4.2 Groundwater Levels
On November 7, 2017, site wells were gauged for depth to water. Free product was not observed
in the monitoring well network. Figure 3 depicts a site map. Monitoring well construction details
are included in Table 4. An oil/water interface probe was used to measure the depth to
groundwater from the top of well casing (TOC) in each well. Depth to groundwater elevation
data is summarized in Table 5. Based on groundwater gauging data from the November 7, 2017,
groundwater monitoring event, groundwater is expected to flow to the south-southeast toward a
tributary to South Deep Creek. Historical data has generally shown groundwater flow to the east.
Figure 5 depicts a groundwater elevation contour map. Field notes from the November 7, 2017,
groundwater monitoring event are presented in Appendix A.

4.3 Groundwater Quality

On November 7, 2017, groundwater samples were collected from monitoring wells MW-1 through
MW-6. Monitoring well MW-8 could not be located during the groundwater monitoring event.
During sampling activities, a three-volume well purge was implemented prior to groundwater
sample collection to ensure collection of representative groundwater samples. The groundwater
samples were collected in laboratory-supplied, preserved containers; entered into chain of custody
control; placed on ice; and shipped to North Carolina accredited Con-Test Analytical laboratory in
East Longmeadow, Massachusetts. The groundwater samples were analyzed by EPA Method
6200B for VOCs including petroleum constituents. The analytical report is included in Appendix B.

Groundwater field parameters including temperature, dissolved oxygen, conductivity, pH, and
oxidation reduction potential were measured during the monitoring event. Field parameter readings
for each well are presented in Table 6. Current and historical groundwater analytical results are
summarized in Tables 7 and 8, respectively. The groundwater analytical results were compared to
the 2L Standards and GCLs. Groundwater analytical results indicated the following:

 Free-phase petroleum product was not identified in the groundwater monitoring network;
 Benzene was detected above GCLs in monitoring wells MW-1 and MW-3 at concentrations
of 27,000 micrograms per liter (µg/L) and 21,000 µg/L, respectively;
 1,2-dibromoethane was detected above GCLs in monitoring wells MW-1 and MW-3 at
concentrations of 1,500 µg/L and 1,200 µg/L, respectively;
 Monitoring well MW-1 contained concentrations of 1,2-dichloroethane and MTBE above
GCLs at concentrations of 3,300 µg/L and 30,000 µg/L, respectively;
 Monitoring well MW-1 contained concentrations of acetone (31,000 µg/L), diisopropyl
ether (540 µg/L), ethylbenzene (2,700 µg/L), 2-hexone (1,600 J µg/L), isopropylbenzene
(96 J µg/L), methyl ethyl ketone (15,000 µg/L), naphthalene (820 µg/L), n-propylbenzene
(260 µg/L), styrene (210 µg/L), toluene (34,000 µg/L), 1,2,4-trimethylbenzene (2,100 µg/L),
1,3,5-trimethylbenzene (540 µg/L), and total xylenes (14,200 µg/L) above 2L Standards;
 Monitoring well MW-2 contained benzene (74 µg/L), naphthalene (39 µg/L), toluene (1,000
µg/L), and total xylenes (680 µg/L) above 2L Standards;
Federal-State Lead Groundwater Monitoring Report June 29, 2018
Williams Grocery – NCDEQ Incident #15063 ATC Project #SLP1506301
1
 Monitoring well MW-3 contained ethylbenzene (3,500 µg/L), naphthalene (1,300 µg/L ), n-
propylbenzene (420 J µg/L), toluene (41,000 µg/L), 1,2,4-trimethylbenzene (3,500 µg/L),
1,3,5-trimethylbenzene (980 µg/L), and total xylenes (20,800 µg/L) above 2L Standards;
 Monitoring well RW-1 contained benzene (69 µg/L), 1,2-Dibromoethane (0.73 µg/L), 1,2-
dichloroethane (23 µg/L), 1,2-dichloropropane (0.96 µg/L), and MTBE (27 µg/L ) above 2L
Standards;
 Monitoring well MW-5 contained a concentration of benzene below 2L Standards. The
concentration of benzene was the only compound detected in monitoring well MW-5;
 Monitoring wells MW-4 and MW-6 did not contain detectable concentrations of petroleum
compounds.

Figures 5 through Figure 10 depict isoconcentration contour maps for benzene, toluene,
ethylbenzene, total xylenes, MTBE, and naphthalene, respectively. Figure 11 depicts additional
concentrations of petroleum constituents above 2L Standards, and GCLs if applicable.

The QA and QC measures and conditions applicable to the water supply well monitoring, as
discussed in section 5.1, also apply to the monitoring well sampling.

5.0 CONCLUSIONS AND RECOMMENDATIONS

On behalf of the Trust Fund Branch of the UST Section, ATC has completed a Federal/State
Lead GMR documenting November 7, 2017 groundwater monitoring event for Williams
Grocery, located at 2425 US Highway 21, Hamptonville, Yadkin County, North Carolina. No
concentrations of petroleum constituents were detected in any of the sampled water supply wells.
Free product was not observed in the groundwater monitoring network. The plume appears to be
delineated and is stable based on groundwater concentrations detected in the monitoring well
network. The groundwater monitoring event identified remaining impact above GCLs and 2L
Standards. Prior MMPE events have been effective at removing free product in the monitoring well
network; however, it appears that the MMPE events have not had a drastic effect on reducing
dissolved phase concentrations. Based on the detected concentrations, ATC recommends the
installation of air sparge wells for use during AFVR events. The air sparge wells would be used to
volatilize petroleum concentrations for collection during future events. Bioremedial and
bioaugmentation methods including enzyme injections or chemical oxidation should be considered
to reduce dissolved phase petroleum concentrations.

TABLES
Well ID Well Owners / Well Users Property Address Mailing Address Well Use
(P/I/N)
Estimated
Distance/Direction from
Source Area (ft)
WSW-1 Ashley Enterprises
2425 US Highway 21
Hamptonville, NC 27020
2117 US Highway 21 S
Hamptonville, NC 27020 P 105
WSW-3 Delma Church (deceased)
1704 Hamptonville Road
Hamptonville, NC 27020
1704 Hamptonville Road
Hamptonville, NC 27020 P 345
WSW-5 Wesley Wall
1708, 1712 Hamptonville Road
Hamptonville, NC 27029
PO Box 206
Sullivan Island, SC 29482 P 400
WSW-6 John H. Gardner (deceased)
1717 Hamptonville Road
Hamptonville, NC 2720
1717 Hamptonville Road
Hamptonville, NC 27020 P 300
WSW-7 Terry Windsor
2405 US Highway 21
Hamptonville, NC 27020
4139 Old US Highway 21
Hamptonville, NC 27020 P 630
WSW-8 Jerry Wall
1737 Hamptonville Road
Hamptonville, NC 27020
PO Box 509
Hamptonville, NC 27020 P 925
WSW-9 Willis Scowls
2401 US Highway 21
Hamptonville, NC 27020
2401 US Highway 21
Hamptonville, NC 27020 P 740
WSW-10 Olen King
2345 US Highway 21
Hamptonville, NC 27020
2345 US Highway 21
Hamptonville, NC 27020 P 930
WSW-18 Bobby D. Church
2516 US Highway 21
Hamptonville, NC 27020
2516 US Highway 21
Hamptonville, NC 27020 P 690
Notes:
NA = Not available or unknown.
P / I / N = Potable water supply / Irrigation / Not in use
NCDEQ INCIDENT #15063
HAMPTONVILLE, YADKIN COUNTY, NORTH CAROLINA
2425 US HIGHWAY 21
WILLIAMS GROCERY
WATER-SUPPLY WELL INFORMATION
TABLE 1
Well IDSampleDateBenzeneTolueneEthylbenzeneTotal XylenesMethyl Tertiary Butyl EtherNaphthaleneAcetoneBromodichloromethanen-ButylbenzeneChloroformChloromethane1,2-Dibromoethane1,1-Dichloroethane1,2-DichloroethaneDiisopropyl EtherEthanol2-HexanoneIsopropylbenzenep-Isopropyltoluene4-Methyl-2-pentanone (MIBK)Methyl Ethyl Ketonen-PropylbenzeneStyrene1,2,4-Trimethylbenzene1,3,5-TrimethylbenzeneWSW-1 11/7/2017 <0.50 <0.50 <0.50 <1.5 <0.50 <0.50 <50 <0.50 <0.50 <0.50 <2.0 <0.50 <0.50 <0.50 <0.50 -- <5.0 <0.50 <0.50 <5.0 <5.0 <0.50 <0.50 <0.50 <0.50WSW-3 11/7/2017WSW-5 11/7/2017WSW-6 11/7/2017 <0.50 <0.50 <0.50 <1.5 <0.50 <0.50 <50 <0.50 <0.50 <0.50 <2.0 <0.50 <0.50 <0.50 <0.50 -- <5.0 <0.50 <0.50 <5.0 <5.0 <0.50 <0.50 <0.50 <0.50WSW-7 11/7/20171 600 600 500 20 6 6,000 0.6 70 70 3 0.02 6 0.40 70 4,000 40 70 25 100 4,000 70 70 400 4005,000 260,000 84,500 85,500 20,000 6,000 6,000,000 NE 6,900 70,000 3,000 50 6,000 400 70,000 4,000,000 40,000 25,000 11,700 100,000 4,000,000 30,00070,000 28,500 25,000Notes:"<" = Not Detected at or above the laboratory reporting limitConcentrations are reported in micrograms per liter (µg/l) = parts per billion (ppb)Italicized values indicate levels above GCLsJ = Estimated value below method reporting limitGCL = Gross Contamination LevelConcentrations in bold print equal or exceed the April 16, 2012 NCDEQ 15A 2L NCAC Groundwater Standard (2L Standard).NCDEQ INCIDENT #150632L StandardGCL StandardNot Sampled - Tenant Could Not Give Approval For Property OwnerNot Sampled - Occupant AbsenceNot Sampled - Occupant AbsenceTABLE 2SUMMARY OF CURRENT WATER SUPPLY WELL ANALYTICAL RESULTSWILLIAMS GROCERY2425 US HIGHWAY 21HAMPTONVILLE, YADKIN COUNTY, NORTH CAROLINA
Well IDSampleDateBenzeneTolueneEthylbenzeneTotal XylenesMethyl Tertiary Butyl EtherNaphthaleneAcetoneBromodichloromethanen-ButylbenzeneChloroformChloromethane1,2-Dibromoethane1,1-Dichloroethane1,2-DichloroethaneDiisopropyl EtherEthanol2-HexanoneIsopropylbenzenep-Isopropyltoluene4-Methyl-2-pentanone (MIBK)Methyl Ethyl Ketonen-PropylbenzeneStyrene1,2,4-Trimethylbenzene1,3,5-Trimethylbenzene11/8/1996 ND ND ND ND ND NS -- -- NS -- -- ND -- NS ND -- -- NS NS -- -- NS -- NS NS4/14/1998 ND ND ND ND ND NS -- -- NS -- -- ND -- NS ND -- -- NS NS -- -- NS -- NS NS6/12/2003 ND ND ND ND <0.5 ND -- -- NS -- -- ND -- ND NS -- -- ND ND -- -- ND -- ND ND3/8/2004 ND ND ND ND <1 ND -- -- NS -- -- ND -- ND NS -- -- ND ND -- -- ND -- ND ND12/1/2005 ND ND ND ND ND ND -- -- ND -- -- <0.5 -- <0.5 ND -- -- ND ND -- -- ND -- ND ND9/10/2008 <0.5 <0.5 <0.5 <1 NS <2 -- -- <0.5 -- -- <0.5-- <0.5 <0.5 -- -- <0.5 <0.5 -- -- <0.5 -- <0.5 <0.56/17/2009 <1 <5 <1 <3 NS <5 -- -- <1 -- -- <1 -- <1 <1 -- -- <1 <1 -- -- <1 -- <1 <111/30/2009 <0.040 <0.060 <0.090 <0.19 <0.11 <0.23 <0.62 <0.080 <0.24 <0.050 --<0.11 <0.050 <0.070 <0.080 <42 <0.19 <0.10 <0.14 <0.13 <0.90 <0.090 <0.050 <0.14 <0.0806/14/2010630.95 <0.054 13.84 J282.6 <1.5 <0.031 <0.059 <0.059 0.97 <0.041 <0.0381.30.69 <42 -- <0.034 -- -- <0.83 <0.059 <0.034 <0.038 0.809/13/2010550.79 <0.054 16243.4 <1.5 <0.031 <0.059 <0.053 <0.032 <0.041 <0.03810.63 <42 <0.11 0.67 <0.059 -- <0.11 <0.059 <0.034 1.2 1.19/15/2011 - PRE POE <0.054 <0.057 <0.054 <0.17 <0.056 <0.094 <1.5 <0.031 <0.059 <0.053 <0.032 <0.041 <0.038 <0.054 <0.042 <42 <0.11 <0.034 <0.059 -- <0.83 <0.059 <0.034 <0.038 <0.0389/15/2011 - POST POE <0.054 <0.057 <0.054 <0.17 <0.056 <0.094 <1.5 <0.031 <0.059 <0.053 <0.032 <0.041 <0.038 <0.054 <0.042 <42 <0.11 <0.034 <0.059-- <0.83 <0.059 <0.034 <0.038 <0.03812/6/2011 - PRE POE <0.054 <0.057 <0.054 <0.17 <0.056 <0.094 <1.5 <0.031 <0.059 <0.053 <0.032 <0.041 <0.038 <0.054 <0.042 <42 <0.11 <0.034 <0.059 -- <0.83 <0.059 <0.034 <0.038 <0.03812/6/2011 - POST POE <0.054 <0.057 <0.054 <0.17 <0.056 <0.094 <1.5 <0.031 <0.059 <0.053 <0.032 <0.041 <0.038 <0.054 <0.042 <42 <0.11 <0.034 <0.059-- <0.83 <0.059 <0.034 <0.038 <0.0386/13/2012 - PRE POE <0.054 <0.057 <0.054 <0.17 <0.056 <0.094 <1.5 <0.031 <0.059 <0.053 <0.032 <0.041 <0.038 <0.054 <0.042 <42 <0.11 <0.034 <0.059 -- <0.83 <0.059 <0.034 <0.038 <0.0386/13/2012 - POST POE <0.054 <0.057 <0.054 <0.17 <0.056 <0.094 <1.5 <0.031 <0.059 <0.053 <0.032 <0.041 <0.038 <0.054 <0.042 <42 <0.11 <0.034 <0.059-- <0.83 <0.059 <0.034 <0.038 <0.0382/25/2014 <0.50 <0.50 <0.50 <1.0 <0.50 <2.0 -- -- -- -- <1.0 -- -- <0.50 <0.50 -- -- <0.50 -- -- -- -- -- <0.50 <0.5011/7/2017 <0.50 <0.50 <0.50 <1.5 <0.50 <0.50 <50 <0.50 <0.50 <0.50 <2.0 <0.50<0.50 <0.50 <0.50 -- <5.0 <0.50 <0.50 <5.0 <5.0 <0.50 <0.50 <0.50 <0.5011/1/1997 ND ND ND ND ND ND -- -- ND -- -- ND -- ND ND -- -- ND ND -- -- ND -- ND ND12/1/2005 ND ND ND ND ND ND -- -- ND -- -- <0.5 -- <0.5 ND -- -- ND ND -- -- ND -- ND ND9/10/2008 NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS6/17/2009 <1 <5 <1 <3 <1 <5 -- -- <1 -- -- <1 -- <1 <1 -- -- <1 <1 -- -- <1 -- <1 <111/30/2009 <0.040 <0.060 <0.090 <0.19 <0.11 <0.23 <0.62 <0.080 <0.24 <0.050 --<0.11 <0.050 <0.070 <0.080 <42 <0.19 <0.10 <0.14 <0.13 <0.90 <0.090 <0.050 <0.14 <0.0806/14/2010 <0.054 <0.057 <0.054 <0.174 <0.056 <0.094 <1.5 <0.031 <0.059 <0.053 <0.032 <0.041 <0.038 <0.054 <0.042 <42 -- <0.034 -- -- <0.83 <0.059 <0.034 <0.038 <0.0389/13/2010 <0.054 <0.057 <0.054 <0.174 <0.056 <0.094 <1.5 <0.031 <0.059 <0.053 <0.032 <0.041 <0.038 <0.054 <0.042 <42 -- <0.034 -- -- <0.83 <0.059 <0.034 <0.038 <0.0389/15/2011 <0.054 <0.057 <0.054 <0.174 <0.056 <0.094 <1.5 <0.031 <0.059 <0.053 <0.032 <0.041 <0.038 <0.054 <0.042 <42 -- <0.034 -- -- <0.83 <0.059 <0.034 <0.038 <0.03812/6/2011 <0.054 <0.057 <0.054 <0.174 <0.056 <0.094 <1.5 <0.031 <0.059 <0.053 <0.032 <0.041 <0.038 <0.054 <0.042 <42 <0.11 <0.034 <0.059 -- <0.83 <0.059 <0.034 <0.038 <0.0386/13/2012 <0.054 <0.057 <0.054 <0.174 <0.056 <0.094 <1.5 <0.031 <0.059 <0.053 <0.032 <0.041 <0.038 <0.054 <0.042 <42 <0.11 <0.034 <0.059 -- <0.83 <0.059 <0.034 <0.038 <0.0382/25/2014 <0.50 <0.50 <0.50 <1.0 <0.50 <2.0 -- -- -- -- <1.0 -- -- <0.50 <0.50 -- -- <0.50 -- -- -- -- -- <0.50 <0.5010/19/2015 <0.50 <0.50 <0.50 <1.0 <0.50 <2.0 -- -- -- -- <1.0 -- -- <0.50 <0.50 -- -- <0.50 -- -- -- -- -- <0.50 <0.50Notes:"<" or ND = Not Detected at or above the laboratory detection or reporting limitConcentrations are reported in micrograms per liter (µg/l) = parts per billion (ppb)Italicized values indicate levels above GCLsJ = Estimated value below method reporting limitNA = Not AnalyzedGCL = Gross Contamination LevelConcentrations in bold print equal or exceed the April 16, 2012 NCDEQ 15A 2L NCAC Groundwater Standard (2L Standard).WSW-2WSW-1TABLE 3HISTORICAL WATER SUPPLY WELL ANALYTICAL RESULTSWILLIAMS GROCERY2425 US HIGHWAY 21HAMPTONVILLE, YADKIN COUNTY, NORTH CAROLINANCDEQ INCIDENT #15063
Well IDSampleDateBenzeneTolueneEthylbenzeneTotal XylenesMethyl Tertiary Butyl EtherNaphthaleneAcetoneBromodichloromethanen-ButylbenzeneChloroformChloromethane1,2-Dibromoethane1,1-Dichloroethane1,2-DichloroethaneDiisopropyl EtherEthanol2-HexanoneIsopropylbenzenep-Isopropyltoluene4-Methyl-2-pentanone (MIBK)Methyl Ethyl Ketonen-PropylbenzeneStyrene1,2,4-Trimethylbenzene1,3,5-TrimethylbenzeneTABLE 3HISTORICAL WATER SUPPLY WELL ANALYTICAL RESULTSWILLIAMS GROCERY2425 US HIGHWAY 21HAMPTONVILLE, YADKIN COUNTY, NORTH CAROLINANCDEQ INCIDENT #150634/14/1998 ND ND ND ND ND NS -- -- NS -- -- ND -- NS ND -- -- NS NS -- -- NS -- NS NS6/12/2003 ND ND ND ND ND ND -- -- NS -- -- ND -- ND NS -- -- ND ND -- -- ND -- ND ND3/8/2004 ND ND ND ND ND ND -- -- NS -- -- ND -- ND NS -- -- ND ND -- -- ND -- ND ND12/1/2005 ND ND ND ND ND ND -- -- ND -- -- <0.5 -- <0.5 ND -- -- ND ND -- -- ND -- ND ND9/10/2008 <0.5 <0.5 <0.5 <1 <0.5 <2 -- -- <0.5 -- -- <0.5-- <0.5 <0.5 -- -- <0.5 <0.5 -- -- <0.5 -- <0.5 <0.56/17/2009 NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS11/30/2009 <0.040 <0.060 <0.090 <0.19 <0.11 <0.23 <0.62 <0.080 <0.24 <0.050 --<0.11 <0.050 <0.070 <0.080 <42 <0.19 <0.10 <0.14 <0.13 <0.90 <0.090 <0.050 <0.14 <0.0806/14/2010 <0.054 <0.057 <0.054 <0.174 <0.056 <0.094 <1.5 <0.031 <0.059 <0.053 <0.032 <0.041 <0.038 <0.054 <0.042 <42 -- <0.034 -- -- <0.83 <0.059 <0.034 <0.038 <0.0389/13/2010 <0.054 <0.057 <0.054 <0.174 <0.056 <0.094 <1.5 <0.031 <0.059 <0.053 <0.032 <0.041 <0.038 <0.054 <0.042 <42 -- <0.034 -- -- <0.83 <0.059 <0.034 <0.038 <0.0389/15/2011 <0.054 <0.057 <0.054 <0.174 <0.056 <0.094 <1.5 <0.031 <0.059 <0.053 <0.032 <0.041 <0.038 <0.054 <0.042 <42 -- <0.034 -- -- <0.83 <0.059 <0.034 <0.038 <0.03812/6/2011 <0.054 <0.057 <0.054 <0.174 <0.056 <0.094 <1.5 <0.031 <0.059 <0.053 <0.032 <0.041 <0.038 <0.054 <0.042 <42 <0.11 <0.034 <0.059 -- <0.83 <0.059 <0.034 <0.038 <0.0386/13/2012 <0.054 <0.057 <0.054 <0.174 <0.056 <0.094 <1.5 <0.031 <0.059 <0.053 <0.032 <0.041 <0.038 <0.054 <0.042 <42 <0.11 <0.034 <0.059 -- <0.83 <0.059 <0.034 <0.038 <0.0382/25/2014 <0.50 <0.50 <0.50 <1.0 <0.50 <2.0 -- -- -- -- <1.0 -- -- <0.50 <0.50 -- -- <0.50 -- -- -- -- -- <0.50 <0.5011/7/20176/12/2003 ND ND ND ND ND ND -- -- NS -- -- ND -- ND NS -- -- ND ND -- -- ND -- ND ND3/8/2004 NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS12/1/2005 ND ND ND ND ND ND -- -- ND -- -- <0.5 -- <0.5 ND -- -- ND ND -- -- ND -- ND ND9/10/2008 NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS6/17/2009 NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS9/13/2010 <0.054 <0.057 <0.054 <0.174 <0.056 <0.094 <1.5 <0.031 <0.059 <0.053 <0.032 <0.041 <0.038 <0.054 <0.042 <42 -- <0.034 -- -- 4.3 J <0.059 <0.034 <0.038 <0.0389/15/2011 <0.054 <0.057 <0.054 <0.174 <0.056 <0.094 <1.5 <0.031 <0.059 <0.053 <0.032 <0.041 <0.038 <0.054 <0.042 <42 <0.11 <0.034 -- -- <0.83 <0.059 <0.034 <0.038 <0.03812/6/2011 <0.054 <0.057 <0.054 <0.174 <0.056 <0.094 <1.5 <0.031 <0.059 <0.053 <0.032 <0.041 <0.038 <0.054 <0.042 <42 <0.11 <0.034 <0.059 -- <0.83 <0.059 <0.034 <0.038 <0.0386/13/2012 <0.054 <0.057 <0.054 <0.174 <0.056 <0.094 <1.5 <0.031 <0.059 <0.053 <0.032 <0.041 <0.038 <0.054 <0.042 <42 <0.11 <0.034 <0.059 -- <0.83 <0.059 <0.034 <0.038 <0.0382/25/2014 <0.50 <0.50 <0.50 <1.0 <0.50 <2.0 -- -- -- -- <1.0 -- -- <0.50 <0.50 -- -- <0.50 -- -- -- -- -- <0.50 <0.5010/19/2015 <0.50 <0.50 <0.50 <1.0 <0.50 <2.0 -- -- -- -- <1.0 -- -- <0.50 <0.50 -- -- <0.50 -- -- -- -- -- <0.50 <0.50Notes:"<" or ND = Not Detected at or above the laboratory detection or reporting limitConcentrations are reported in micrograms per liter (µg/l) = parts per billion (ppb)Italicized values indicate levels above GCLsJ = Estimated value below method reporting limitNA = Not AnalyzedGCL = Gross Contamination LevelConcentrations in bold print equal or exceed the April 16, 2012 NCDEQ 15A 2L NCAC Groundwater Standard (2L Standard).WSW-3WSW-4Not Sampled - Occupant Absence
Well IDSampleDateBenzeneTolueneEthylbenzeneTotal XylenesMethyl Tertiary Butyl EtherNaphthaleneAcetoneBromodichloromethanen-ButylbenzeneChloroformChloromethane1,2-Dibromoethane1,1-Dichloroethane1,2-DichloroethaneDiisopropyl EtherEthanol2-HexanoneIsopropylbenzenep-Isopropyltoluene4-Methyl-2-pentanone (MIBK)Methyl Ethyl Ketonen-PropylbenzeneStyrene1,2,4-Trimethylbenzene1,3,5-TrimethylbenzeneTABLE 3HISTORICAL WATER SUPPLY WELL ANALYTICAL RESULTSWILLIAMS GROCERY2425 US HIGHWAY 21HAMPTONVILLE, YADKIN COUNTY, NORTH CAROLINANCDEQ INCIDENT #1506311/30/2009 <0.040 <0.060 <0.090 <0.19 <0.11 <0.23 <0.62 1.2 <0.24 12 -- <0.11 <0.050 <0.070 <0.080 <42 <0.19 <0.10 <0.14 <0.13 <0.90 <0.090 <0.050 <0.14 <0.0802/12/2010 <0.50 <0.50 <0.50 <0.50 <0.50 <2.0 <5 <0.50 <1.0 1 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <5.0 <5.0 <0.50 <0.50 <1.0 <0.506/14/2010 <0.054 <0.057 <0.054 <0.174 <0.056 <0.094 <1.5 <0.031 <0.059 <0.053 <0.032 <0.041 <0.038 <0.054 <0.042 <42 -- <0.034 -- -- <0.83 <0.059 <0.034 <0.038 <0.0389/13/2010 <0.054 <0.057 <0.054 <0.174 <0.056 <0.094 <1.5 <0.031 <0.059 <0.053 <0.032 <0.041 <0.038 <0.054 <0.042 <42 -- <0.034 -- -- <0.83 <0.059 <0.034 <0.038 <0.0389/15/2011 <0.054 <0.057 <0.054 <0.174 <0.056 <0.094 <1.5 <0.031 <0.059 <0.053 <0.032 <0.041 <0.038 <0.054 <0.042 <42 -- <0.034 -- -- <0.83 <0.059 <0.034 <0.038 <0.03812/6/2011 <0.054 <0.057 <0.054 <0.174 <0.056 <0.094 <1.5 <0.031 <0.059 <0.053 <0.032 <0.041 <0.038 <0.054 <0.042 <42 <0.11 <0.034 <0.059 -- <0.83 <0.059 <0.034 <0.038 <0.0386/13/2012 <0.054 <0.057 <0.054 <0.174 <0.056 <0.094 <1.5 <0.031 <0.059 <0.053 <0.032 <0.041 <0.038 <0.054 <0.042 <42 <0.11 <0.034 <0.059 -- <0.83 <0.059 <0.034 <0.038 <0.0382/25/2014 <0.50 <0.50 <0.50 <1.0 <0.50 <2.0 -- -- -- -- <1.0 -- -- <0.50 <0.50 -- -- <0.50 -- -- -- -- -- <0.50 <0.5010/19/2015 <0.50 <0.50 <0.50 <1.0 <0.50 <2.0 -- -- -- -- <1.0 -- -- <0.50 <0.50 -- -- <0.50 -- -- -- -- -- <0.50 <0.5011/7/201711/30/2009 <0.040 <0.060 <0.090 <0.19 <0.11 <0.23 <0.62 1.2 <0.24 12 -- <0.11 <0.050 <0.070 <0.080 <42 <0.19 <0.10 <0.14 <0.13 <0.90 <0.090 <0.050 <0.14 <0.0806/14/2010 <0.054 <0.057 <0.054 <0.174 <0.056 <0.094 <1.5 <0.031 <0.059 <0.053 <0.032 <0.041 <0.038 <0.054 <0.042 <42 -- <0.034 -- -- <0.83 <0.059 <0.034 <0.038 <0.0389/13/2010 <0.054 <0.057 <0.054 <0.174 <0.056 <0.094 <1.5 <0.031 <0.059 <0.053 <0.032 <0.041 <0.038 <0.054 <0.042 <42 -- <0.034 -- -- <0.83 <0.059 <0.034 <0.038 <0.0389/15/2011 <0.054 <0.057 <0.054 <0.174 <0.056 <0.094 <1.5 <0.031 <0.059 <0.053 <0.032 <0.041 <0.038 <0.054 <0.042 <42 -- <0.034 -- -- <0.83 <0.059 <0.034 <0.038 <0.03812/6/2011 <0.054 <0.057 <0.054 <0.174 <0.056 <0.094 <1.5 <0.031 <0.059 <0.053 <0.032 <0.041 <0.038 <0.054 <0.042 <42 <0.11 <0.034 <0.059 -- <0.83 <0.059 <0.034 <0.038 <0.0386/13/2012 <0.054 <0.057 <0.054 <0.174 <0.056 <0.094 <1.5 <0.031 <0.059 <0.053 <0.032 <0.041 <0.038 <0.054 <0.042 <42 <0.11 <0.034 <0.059 -- <0.83 <0.059 <0.034 <0.038 <0.0382/25/2014 <0.50 <0.50 <0.50 <1.0 <0.50 <2.0 -- -- -- -- <1.0 -- -- <0.50 <0.50 -- -- <0.50 -- -- -- -- -- <0.50 <0.5010/19/2015 <0.50 <0.50 <0.50 <1.0 <0.50 <2.0 -- -- -- -- <1.0 -- -- <0.50 <0.50 -- -- <0.50 -- -- -- -- -- <0.50 <0.5011/7/2017 <0.50 <0.50 <0.50 <1.5 <0.50 <0.50 <50 <0.50 <0.50 <0.50 <2.0 <0.50<0.50 <0.50 <0.50 -- <5.0 <0.50 <0.50 <5.0 <5.0 <0.50 <0.50 <0.50 <0.50Notes:"<" or ND = Not Detected at or above the laboratory detection or reporting limitConcentrations are reported in micrograms per liter (µg/l) = parts per billion (ppb)Italicized values indicate levels above GCLsJ = Estimated value below method reporting limitNA = Not AnalyzedGCL = Gross Contamination LevelConcentrations in bold print equal or exceed the April 16, 2012 NCDEQ 15A 2L NCAC Groundwater Standard (2L Standard).WSW-6WSW-5Not Sampled - Occupant Absence
Well IDSampleDateBenzeneTolueneEthylbenzeneTotal XylenesMethyl Tertiary Butyl EtherNaphthaleneAcetoneBromodichloromethanen-ButylbenzeneChloroformChloromethane1,2-Dibromoethane1,1-Dichloroethane1,2-DichloroethaneDiisopropyl EtherEthanol2-HexanoneIsopropylbenzenep-Isopropyltoluene4-Methyl-2-pentanone (MIBK)Methyl Ethyl Ketonen-PropylbenzeneStyrene1,2,4-Trimethylbenzene1,3,5-TrimethylbenzeneTABLE 3HISTORICAL WATER SUPPLY WELL ANALYTICAL RESULTSWILLIAMS GROCERY2425 US HIGHWAY 21HAMPTONVILLE, YADKIN COUNTY, NORTH CAROLINANCDEQ INCIDENT #1506311/30/2009 <0.040 <0.060 <0.090 <0.19 <0.11 <0.23 <0.62 1.2 <0.24 12 -- <0.11 0.63 <0.070 <0.080 <42 <0.19 <0.10 <0.14 <0.13 <0.90 <0.090 <0.050 <0.14 <0.0802/12/2010 <0.50 <0.50 <0.50 <0.50 <0.50 <2.0 <5 <0.50 <1.0 1 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <5.0 <5.0 <0.50 <0.50 <1.0 <0.506/14/2010 <0.054 <0.057 <0.054 <0.174 <0.056 <0.094 <1.5 <0.031 <0.059 <0.053 <0.032 <0.041 0.053 <0.054 <0.042 <42 -- <0.034 -- -- <0.83 <0.059 <0.034 <0.038 <0.0389/13/2010 <0.054 <0.057 <0.054 <0.174 <0.056 <0.094 <1.5 <0.031 <0.059 <0.053 <0.032 <0.041 <0.038 <0.054 <0.042 <42 -- <0.034 -- -- <0.83 <0.059 <0.034 <0.038 <0.0389/15/2011 <0.054 <0.057 <0.054 <0.174 <0.056 <0.094 <1.5 <0.031 <0.059 <0.053 <0.032 <0.041 <0.038 <0.054 <0.042 <42 -- <0.034 -- -- <0.83 <0.059 <0.034 <0.038 <0.03812/6/2011 <0.054 <0.057 <0.054 <0.174 <0.056 <0.094 <1.5 <0.031 <0.059 <0.053 <0.032 <0.041 0.52 <0.054 <0.042 <42 <0.11 <0.034 <0.059 -- <0.83 <0.059 <0.034 <0.038 <0.0386/13/2012 <0.054 <0.057 <0.054 <0.174 <0.056 <0.094 <1.5 <0.031 <0.059 <0.053 <0.032 <0.041 0.52 <0.054 <0.042 <42 <0.11 <0.034 <0.059 -- <0.83 <0.059 <0.034 <0.038 <0.0382/25/2014 <0.50 <0.50 <0.50 <1.0 <0.50 <2.0 -- -- -- -- <1.0 -- -- <0.50 <0.50 -- -- <0.50 -- -- -- -- -- <0.50 <0.5011/7/2017WSW-8 9/13/2010 <0.054 <0.057 <0.054 <0.174 <0.056 <0.094 <1.5 <0.031 <0.059 <0.053 <0.032 <0.041 <0.038 <0.054 <0.042 <42 -- <0.034 -- -- <0.83 <0.059 <0.034 <0.038 <0.038WSW-9 9/13/2010 <0.054 <0.057 <0.054 <0.174 <0.056 <0.094 <1.5 <0.031 <0.059 <0.053 <0.032 <0.041 <0.038 <0.054 <0.042 <42 -- <0.034 -- -- <0.83 <0.059 <0.034 <0.038 <0.038WSW-10 9/13/2010 <0.054 <0.057 <0.054 <0.174 <0.056 <0.094 <1.5 <0.031 <0.059 <0.053 <0.032 <0.041 <0.038 <0.054 <0.042 <42 -- <0.034 -- -- <0.83 <0.059 <0.034 <0.038 <0.038WSW-18 9/13/2010 <0.054 <0.057 <0.054 <0.174 <0.056 <0.094 <1.5 <0.031 <0.059 <0.053 <0.032 <0.041 <0.038 <0.054 <0.042 <42 -- <0.034 -- -- <0.83 <0.059 <0.034 <0.038 <0.0381 600 600 500 20 6 6,000 0.6 70 70 3 0.02 6 0.40 70 4,000 40 70 25 100 4,000 70 70 400 4005,000 260,000 84,500 85,500 20,000 6,000 6,000,000 NE 6,900 70,000 3,00050 6,000 400 70,000 4,000,000 40,00025,000 11,700 100,000 4,000,000 30,00070,000 28,500 25,000Notes:"<" or ND = Not Detected at or above the laboratory detection or reporting limitConcentrations are reported in micrograms per liter (µg/l) = parts per billion (ppb)Italicized values indicate levels above GCLsJ = Estimated value below method reporting limitNA = Not AnalyzedGCL = Gross Contamination LevelConcentrations in bold print equal or exceed the April 16, 2012 NCDEQ 15A 2L NCAC Groundwater Standard (2L Standard).2L StandardGCL StandardNot Sampled - Tenant Could Not Give Approval For Property OwnerWSW-7

MW-1 November 1996 33 23-33 498.82
MW-2 November 1996 30 20-30 499.27
MW-3 November 1996 33 23-33 499.48
MW-4 April 1998 34 24-34 499.45
MW-5 April 1998 34 24-34 498.34
MW-6 April 1998 34 24-34 495.39
MW-8 April 1998 32 22-32 492.98
RW-1 June 2010 Unknown Unknown 499.38
Well ID Date Installed
Depth of Well
(Feet)
Well Screen
Interval
(Feet)
TOC Elevation
(Feet)
TABLE 4
MONITORING WELL CONSTRUCTION DETAILS
WILLIAMS GROCERY
2425 US HIGHWAY 21
HAMPTONVILLE, YADKIN COUNTY, NORTH CAROLINA
NCDEQ INCIDENT #15063
Well ID Gauging Date
Depth to
Groundwater
(feet)
Depth to Free
Product
Free Product
Thickness
TOC
Elevation
(feet)
Groundwater
Elevation
(feet)
9/10/2008 27.87 27.15 0.72 471.48
6/17/2009 NM NM -- NM
11/9/2009 26.43 26.08 0.35 472.65
11/30/2009 26.02 -- -- 472.80
6/14/2010 22.86 -- -- 475.96
9/15/2011 25.80 -- -- 473.02
6/13/2012 25.72 25.71 0.01 473.11
2/25/2014 22.28 -- -- 476.54
10/3/2015 25.21 -- -- 473.61
11/7/2017 24.25 -- -- 474.57
9/10/2008 27.83 -- -- 471.44
6/17/2009 27.01 -- -- 472.26
11/30/2009 26.39 -- -- 472.88
6/14/2010 23.04 -- -- 476.23
9/15/2011 26.10 -- -- 473.17
6/13/2012 26.11 -- -- 473.16
2/25/2014 22.47 -- -- 476.80
10/3/2015 25.61 -- -- 473.66
11/7/2017 24.75 -- -- 474.52
9/10/2008 28.06 27.72 0.34 471.01
6/17/2009 27.15 -- -- 472.32
11/30/2009 26.45 -- -- 473.02
6/14/2010 23.37 -- -- 476.10
9/15/2011 26.22 -- -- 473.25
6/13/2012 26.26 26.25 0.01 472.57
2/25/2014 22.78 -- -- 476.69
10/3/2015 25.84 -- -- 473.63
11/7/2017 24.66 -- -- 474.81
9/10/2008 27.87 -- -- 471.58
6/17/2009 27.32 -- -- 472.13
11/30/2009 26.66 -- -- 472.79
6/14/2010 23.33 -- -- 476.12
9/15/2011 26.41 -- -- 473.04
6/13/2012 26.52 -- -- 472.93
10/3/2015 25.90 -- -- 473.55
11/7/2017 25.12 -- -- 474.33
Notes:
All measurements expressed in feet
TOC = Top of Casing
Groundwater elevation calculated by [Top of Casing Elevation - Depth to Water] + [Free Product Thickness*0.73]
MW-2 499.27
NCDEQ INCIDENT #15063
MW-3 499.47
MW-4 499.45
498.82
TABLE 5
GROUNDWATER ELEVATION DATA
WILLIAMS GROCERY
2425 US HIGHWAY 21
HAMPTONVILLE, YADKIN COUNTY, NORTH CAROLINA
MW-1
Well ID Gauging Date
Depth to
Groundwater
(feet)
Depth to Free
Product
Free Product
Thickness
TOC
Elevation
(feet)
Groundwater
Elevation
(feet)
NCDEQ INCIDENT #15063
TABLE 5
GROUNDWATER ELEVATION DATA
WILLIAMS GROCERY
2425 US HIGHWAY 21
HAMPTONVILLE, YADKIN COUNTY, NORTH CAROLINA
9/10/2008 24.43 -- -- 473.91
6/17/2009 26.54 -- -- 471.80
11/30/2009 26.03 -- -- 472.31
6/14/2010 23.20 -- -- 475.14
9/15/2011 26.06 -- -- 472.28
6/13/2012 25.71 -- -- 472.63
2/25/2014 22.54 -- -- 475.80
10/3/2015 25.49 -- -- 472.85
11/7/2017 24.22 -- -- 474.12
9/10/2008 NM -- -- NM
6/17/2009 23.20 -- -- 472.19
11/30/2009 26.20 -- -- 469.19
6/14/2010 NM -- -- NM
9/15/2011 NM -- -- NM
6/13/2012 22.40 -- -- 472.99
2/25/2014 19.24 -- -- 476.15
10/3/2015 22.15 -- -- 473.24
11/7/2017 20.91 -- -- 474.48
9/10/2008 NM -- -- NM
6/17/2009 21.54 -- -- 471.44
11/30/2009 21.10 -- -- 471.88
6/14/2010 18.66 -- -- 474.32
9/15/2011 NM -- -- NM
6/13/2012 NM -- -- NM
2/25/2014 NM -- -- NM
10/3/2015 NM -- -- NM
11/7/2017 NM -- -- NM
9/10/2008 27.64 27.26 0.38 472.02
6/17/2009 NM NM -- NM
11/9/2009 26.64 26.58 0.06 472.78
11/30/2009 26.47 26.45 0.02 472.92
6/14/2010 23.39 -- -- 475.99
9/15/2011 26.39 26.21 0.18 473.12
6/13/2012 26.23 26.20 0.03 473.17
2/25/2014 22.75 -- -- 476.63
10/3/2015 25.72 -- -- 473.66
11/7/2017 24.94 -- -- 474.44
Notes:
All measurements expressed in feet
TOC = Top of Casing
Groundwater elevation calculated by [Top of Casing Elevation - Depth to Water] + [Free Product Thickness*0.73]
MW-6 495.39
MW-5 498.34
MW-8 492.98
RW-1 499.38
Well Date
Temperature
(◦C)
Conductivity
(µS/cm)pH ORP
DO
(mg/L)
MW-1 11/7/2017 62.59 0.145 7.86 109.5 2.23
MW-2 11/7/2017 61.65 0.119 8.33 113.3 2.50
MW-3 11/7/2017 62.40 0.222 7.42 105.5 2.07
MW-4 11/7/2017 61.06 0.258 9.56 105.7 3.38
MW-5 11/7/2017 60.93 0.048 7.45 98.8 5.57
MW-6 11/7/2017 61.27 0.028 7.09 110.5 5.71
RW-1 11/7/2017 61.77 0.063 7.39 88.3 3.75
NCDEQ INCIDENT #15063
HAMPTONVILLE, YADKIN COUNTY, NORTH CAROLINA
TABLE 6
NATURAL ATTENUATION PARAMETERS
WILLIAMS GROCERY
2425 US HIGHWAY 21
Well IDSampleDateBenzeneTolueneEthylbenzeneTotal XylenesMethyl Tertiary Butyl EtherNaphthaleneAcetonen-Butylbenzene1,2-Dibromoethane1,2-Dichloroethane1,2-DichloropropaneDiisopropyl Ether2-HexanoneIsopropylbenzeneMethyl Ethyl Ketonen-PropylbenzeneStyrene1,2,4-Trimethylbenzene1,3,5-TrimethylbenzeneMW-1 11/7/201727,00034,000 2,700 14,20030,00082031,000<2001,500 3,300<200540 1,600 J 96 J 15,000 260 210 2,100 540MW-2 11/7/201774 1,000130680<2539<2,500<25 <25 <25 <25 <25 <250 <25 <250 <25 <25 86 34MW-3 11/7/201721,00041,000 3,500 20,800<5001,3005,500 J <5001,200<500 <500 <500 <5,000 <500 2,700 J420 J<5003,500 980MW-4 11/7/2017 <0.50 <0.5 <0.50 <1.5 <0.50 <0.50<50<0.50 <0.50 <0.50 <0.50 <0.50 <5.0 <0.50 <5.0 <0.50 <0.50 <0.50 <0.50MW-5 11/7/2017 0.78 <0.5 <0.50 <1.5 <0.50 <0.50<50<0.50 <0.50 <0.50 <0.50 <0.50 <5.0 <0.50 <5.0 <0.50 <0.50 <0.50 <0.50MW-6 11/7/2017 <0.50 <0.5 <0.50 <1.5 <0.50 <0.50<50<0.50 <0.50 <0.50 <0.50 <0.50 <5.0 <0.50 <5.0 <0.50 <0.50 <0.50 <0.50MW-8 11/7/2017RW-1 11/7/2017699.5 2.2 37.4274.3 J<500.24 J0.73 23 0.966.0 <5.0 0.16 J <5.0 0.24 J <0.50 23 1.7FB 11/7/2017 <0.50 <0.5 <0.50 <1.5 <0.50 <0.50<50<0.50 <0.50 <0.50 <0.50 <0.50 <5.0 <0.50 <5.0 <0.50 <0.50 <0.50 <0.501 600 600 500 20 6 6,000 70 0.02 0.40 0.60 70 40 70 4,000 70 70 400 4005,000 260,000 84,500 85,500 20,000 6,000 6,000,000 6,900 50 400 600 70,000 40,000 25,000 4,000,000 30,000 70,000 28,500 25,000Notes:"<" or ND = Not Detected at or above the laboratory detection limitConcentrations are reported in micrograms per liter (µg/l) = parts per billion (ppb)Italicized values indicate levels above GCLsJ = Estimated value below method reporting limitNA = Not AnalyzedGCL = Gross Contamination LevelConcentrations in bold print equal or exceed the April 16, 2012 NCDEQ 15A 2L NCAC Groundwater Standard (2L Standard).2L StandardGCL StandardNot Sampled - Could Not LocateTABLE 7SUMMARY OF CURRENT GROUNDWATER ANALYTICAL RESULTSWILLIAMS GROCERY2425 US HIGHWAY 21HAMPTONVILLE, YADKIN COUNTY, NORTH CAROLINANCDEQ INCIDENT #15063
Well IDSampleDateBenzeneTolueneEthylbenzeneTotal XylenesMethyl Tertiary Butyl EtherNaphthaleneAcetoneBromodichloromethanen-Butylbenzenesec-ButylbenzeneChloroformChloromethane1,2-Dibromoethane1,1-Dichloroethane1,2-Dichloroethane1,2-DichloropropaneDiisopropyl EtherEthanol2-HexanoneIsopropylbenzenep-Isopropyltoluene4-Methyl-2-pentanone (MIBK)Methyl Ethyl Ketonen-PropylbenzeneStyrene1,2,4-Trimethylbenzene1,3,5-Trimethylbenzene11/8/19964/14/19986/12/20033/8/200412/1/200523,00933,000 3,200152,000 25,0002,700-- --<250 -- -- -- 1,200 --5,100--560-- -- <250 <250 -- -- <250 --3,700 15,2009/10/20086/17/200911/30/200926,00029,000 3,000 9,10028,000800 5,000<3.225 -- <2 --1,000<2 <2 --590 9,700 190 110 4,000 110 2,700 300672,5001106/14/201030,00035,000 2,900 16,40054,0001,100 10,000<28234 <2.1 <131,300<1.52,900--600<1,700580 160-- <1.97,400 420 72 1,400 1,1009/15/201135,00038,000 2,700 19,50075,000660 14,000<3.1<5.9 <5.4 <13 <3.21,800<3.84,300--940<4,200450 190 96 250 9,800 320 170 2,100 5506/13/20122/25/201424,80032,900 2,890 19,28066,2001,090NA <25.0<25.0 <25.0 <25.0 <50.01,440<25.02,860<25.0744NA NA144NA NA NA438 103 3,880 1,11010/3/201523,40030,700 2,550 14,09035,900<1,000NA <250<250 <250 <250 <5001,350<2502,500<250549NA NA <250 NA NA NA <250 <2502,170 58811/7/201727,00034,000 2,700 14,20030,00082031,000<200<200 <200 <200 <8001,500<2003,300<200540NA1,600 J 96 J<200 <2,00015,000 260 210 2,100 54011/8/19961,200 3,1004001,580ND NS-- --NS -- -- -- 11.3 -- NS --170-- -- NS NS -- -- NS -- NS NS4/14/1998640 1,10056 350 ND ND-- --NS -- -- -- ND -- NS --81-- -- NS NS -- -- NS -- NS NS6/12/2003 ND 1.3 ND 12 ND ND-- --NS -- -- -- ND - ND -- ND -- -- ND NS -- -- ND -- ND 53/8/20041.42.6 ND 27.1 ND ND-- --NS -- -- -- ND -- ND -- ND -- -- ND NS -- -- ND -- ND 1012/1/2005 ND ND ND ND ND ND-- --ND -- -- -- <0.50 -- <0.5 -- ND -- -- ND ND -- -- ND -- ND ND9/10/2008142494 92.7 386 <0.515.7-- --<0.5 -- -- --1.7-- <5 -- <0.5 -- -- 3.4 <0.5 -- -- 6.3 -- 44.1 246/17/200941120 16 79 <1 <5-- --<1 -- -- -- <1 -- <1 -- <1 -- -- <1 <1 -- -- 1.4 -- 8.3 4.611/30/20092239 8 91 <0.11 1.6<0.62 <0.080<0.24 -- <0.050 -- <0.11 -- <0.070 -- <0.080 <42 <0.19 <0.10 <0.14 <0.13 <0.90 0.52 <0.050 4.7 <0.0806/14/2010 <0.0054 <0.057 <0.054 <0.174 <0.056 <0.094<1.5 <0.031<0.059 <0.054 <0.053 <0.032 <0.041 <0.038 <0.054 -- <0.034<42 <0.11 <0.034 -- <0.048 <0.83 <0.059 <0.034 <0.038 <0.0389/15/201110110 20 214 <0.05616<1.5 <0.0310.57 <0.054 <0.053 <0.032 <0.041 <0.038 <0.054-- <0.042 <42 3.9 2.8 1.7 4 <0.83 4.4 <0.034 140 386/13/2012710 5,2004802,900<0.05613049 J <0.03122 <0.054 <0.053 <0.032 <0.041 <0.038 <0.054 -- <0.042 <42 3.9 23 12 4 <0.83 22 165802102/24/2014 <0.50 <0.50 <0.50 <1.5 <0.50 <2.0NA <0.50<0.50 <0.50 <0.50 <1.0 <0.50 <0.50 <0.50 <0.50 <0.050 NA NA <0.50 NA NA NA <0.50 <0.50 <0.50 <0.5010/3/201551.72332,550188.6 <0.508NA <0.50<0.50 <0.50 <0.50 <1.0 <0.50 <0.50 <0.50 <0.50549NA NA 1.5 NA NA NA 2.3 0.75 19.7 12.711/7/201774 1,000130680<2539<2,500 <25<25 <25 <25 <100 <25 <25 <25 <25 <25 NA <250 <25 <25 <250 <250 <25 <25 86 341 600 600 500 20 6 6,000 0.6 70 70 70 3 0.02 6 0.40 0.60 70 4,000 40 70 25 100 4,000 70 70 400 4005,000 260,000 84,500 85,500 20,000 6,0006,000,000 NE 6,900 8,500 70,000 3,000 50 6,000 400 600 70,000 4,000,00040,000 25,000 11,700 100,000 4,000,000 30,000 70,000 28,500 25,000Notes:"<" or ND = Not Detected at or above the laboratory detection or reporting limitConcentrations are reported in micrograms per liter (µg/l) = parts per billion (ppb)Italicized values indicate levels above GCLsJ = Estimated value below method reporting limitNA = Not AnalyzedGCL = Gross Contamination LevelConcentrations in bold print equal or exceed the April 16, 2012 NCDEQ 15A 2L NCAC Groundwater Standard (2L Standard).HAMPTONVILLE, YADKIN COUNTY, NORTH CAROLINA2425 US HIGHWAY 21WILLIAMS GROCERYHISTORICAL GROUNDWATER ANALYTICAL RESULTSTABLE 8Not Sampled - Free ProductNot Sampled - Free ProductNCDEQ INCIDENT #15063Not Sampled - Free ProductNot Sampled - Free ProductGCL StandardNot Sampled - Could Not LocateNot Sampled - Free ProductNot Sampled - Free ProductMW-1MW-22L Standard
Well IDSampleDateBenzeneTolueneEthylbenzeneTotal XylenesMethyl Tertiary Butyl EtherNaphthaleneAcetoneBromodichloromethanen-Butylbenzenesec-ButylbenzeneChloroformChloromethane1,2-Dibromoethane1,1-Dichloroethane1,2-Dichloroethane1,2-DichloropropaneDiisopropyl EtherEthanol2-HexanoneIsopropylbenzenep-Isopropyltoluene4-Methyl-2-pentanone (MIBK)Methyl Ethyl Ketonen-PropylbenzeneStyrene1,2,4-Trimethylbenzene1,3,5-TrimethylbenzeneHAMPTONVILLE, YADKIN COUNTY, NORTH CAROLINA2425 US HIGHWAY 21WILLIAMS GROCERYHISTORICAL GROUNDWATER ANALYTICAL RESULTSTABLE 8NCDEQ INCIDENT #1506311/8/19964/14/19986/12/20033/8/200412/1/200523,00034,000 2,300313,5002,900 760-- --ND -- -- --1,100--1,200--570-- --88ND -- --220ND2,100 4609/10/20086/17/200911,00026,000 4,300 22,200<100610-- --210-- -- --470--310-- <100 -- --260<100 -- --990<1006,300 2,00011/30/20099,20013,000 1,700 9,000<4.4570<25 <3.233 -- <2 -- -- -- -- -- <3.2 <1,700 <7.690<5.6 <5 350250<5.6 -- --6/14/201014,00023,000 2,100 11,500 410 870 7,500<1.231 <2.2 <2.1 <1.3510<1.5410--87<1,700790 110--340 6,800 280--2,200 6209/15/201131,00044,000 2,900 15,200 590 890 10,000<3.1<5.9 <5.4 <5.3 <3.21,200<3.81,100--300<4,2001,200 21095420 6,200 370 95 2,700 6706/13/20122/25/201417,50037,500 3,570 23,020 598 1,340NA <50.0<50.0 <50.0 <50.0 <100.01,030<50.0607<50.0149<50.0 NA192NA NA NA624NA4,980 1,40010/3/201511/7/201721,00041,000 3,500 20,800<5001,3005,500 J <500 <500 <500 <500 <2,0001,200<500 <500 <500 <500 NA <5,000 <500 <500 <5,000 2,700 J420 J<5003,500 9804/14/19986214NDNS-- --NS -- -- -- ND -- NS -- ND -- -- NS NS NS -- NS -- NS NS6/12/2003 ND ND ND ND ND ND-- --NS -- -- -- ND -- ND -- ND -- -- ND NS ND -- NS -- ND ND3/8/2004 ND ND ND ND ND ND-- --NS -- -- -- ND -- ND -- ND -- -- ND NS ND -- NS -- ND ND12/1/2005 ND ND ND ND ND ND-- --ND -- -- -- <0.5 -- <0.5 -- ND -- -- ND ND ND -- ND -- ND ND9/10/2008 <0.5 0.58 <0.5 <1 <0.50 <2-- --<0.5 -- -- -- <0.5 -- <0.5 -- <0.5 -- --<0.5 <0.5 <0.5 -- <0.5 -- <0.5 <0.56/17/2009 <1 <5 <1 <3 <1 <5-- --<1 -- -- -- <1 -- <1 -- <1 -- -- <1 <1 <1 -- <1 -- <1 <111/30/2009 <0.040 <0.060 <0.090 <0.19 <0.11 <0.23<0.62 <0.080<0.24 -- <0.050 -- <0.11 <0.050 <0.070 -- <0.080 <42 -- <0.10 <0.14 <0.090 <0.090 <0.14 <0.50 <0.14 <0.0806/14/2010 <0.054 <0.057 <0.054 <0.174 <0.056 <0.094<1.5 <0.031<0.059 <0.054 <0.053 <0.032 <0.041 <0.038 <0.054 -- <0.034 <42 <0.11 <0.034 -- <0.059 <0.83 -- <0.034 <0.038 <0.0389/15/2011 <0.054 <0.057 <0.054 <0.17 <0.056 <0.094<1.5 <0.031<0.059 <0.054 <0.053 <0.032 <0.041 <0.038 <0.054 -- <0.034 <42 <0.11 <0.034 -- <0.059 <0.83 -- <0.034 <0.038 <0.0386/13/2012 <0.054 <0.057 <0.054 <0.17 <0.056 <0.094<1.5 <0.031<0.059 <0.054 <0.053 <0.032 <0.041 <0.038 <0.054 -- <0.034 <42 <0.11 <0.034 -- <0.059 <0.83 -- <0.034 <0.038 <0.0382/24/2014 <0.50 <0.50 <0.50 <1.5 <0.50 <2.0NA <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 <0.50 <0.50 <0.50<0.50 NA NA <0.50 NA <0.50 NA NA <0.50 <0.50 <0.5010/3/2015 <0.50 <0.50 <0.50 <0.50 <0.50 <2.0<0.50 <0.50<0.50 <0.50 <0.50 <1.0 <0.50 <0.50 <0.50 <0.50 <0.50 NA NA <0.50 NA <0.50 NA NA <0.50 <0.50 <0.5011/7/2017 <0.50 <0.5 <0.50 <1.5 <0.50 <0.50<50 <0.50<0.50 <0.50 <0.50 <2.0 <0.50 <0.50 <0.50 <0.50 <0.50NA <5.0 <0.50 <0.50 <5.0 <5.0 <0.50 <0.50 <0.50 <0.501 600 600 500 20 6 6,000 0.6 70 70 70 3 0.02 6 0.40 0.60 70 4,000 40 70 25 100 4,000 70 70 400 4005,000 260,000 84,500 85,500 20,000 6,0006,000,000 NE 6,900 8,500 70,000 3,000 50 6,000 400 600 70,000 4,000,00040,000 25,000 11,700 100,000 4,000,000 30,000 70,000 28,500 25,000Notes:"<" or ND = Not Detected at or above the laboratory detection or reporting limitConcentrations are reported in micrograms per liter (µg/l) = parts per billion (ppb)Italicized values indicate levels above GCLsJ = Estimated value below method reporting limitNA = Not AnalyzedGCL = Gross Contamination LevelConcentrations in bold print equal or exceed the April 16, 2012 NCDEQ 15A 2L NCAC Groundwater Standard (2L Standard).Not Sampled - Free ProductNot Sampled - Free ProductNot Sampled - Free ProductNot Sampled - Free ProductNot Sampled - Free ProductNot Sampled - Free ProductNot Sampled - Free Product2L StandardGCL StandardMW-3MW-4
Well IDSampleDateBenzeneTolueneEthylbenzeneTotal XylenesMethyl Tertiary Butyl EtherNaphthaleneAcetoneBromodichloromethanen-Butylbenzenesec-ButylbenzeneChloroformChloromethane1,2-Dibromoethane1,1-Dichloroethane1,2-Dichloroethane1,2-DichloropropaneDiisopropyl EtherEthanol2-HexanoneIsopropylbenzenep-Isopropyltoluene4-Methyl-2-pentanone (MIBK)Methyl Ethyl Ketonen-PropylbenzeneStyrene1,2,4-Trimethylbenzene1,3,5-TrimethylbenzeneHAMPTONVILLE, YADKIN COUNTY, NORTH CAROLINA2425 US HIGHWAY 21WILLIAMS GROCERYHISTORICAL GROUNDWATER ANALYTICAL RESULTSTABLE 8NCDEQ INCIDENT #150634/14/19982,200 1,200120820ND NS-- --NS -- -- -- ND -- NS -- ND -- -- NS NS -- -- NS -- NS NS6/12/20033,200 7001901,220ND ND-- --NS -- -- -- ND -- ND -- ND -- -- ND NS -- -- NS -- 170 623/8/20041405 7.1 68 ND ND-- --NS -- -- -- ND -- ND -- ND -- -- ND NS -- -- NS -- 9.4 2.712/1/20052002.6 5.4 98 3.5 5.1-- --ND -- -- -- <0.5 -- <0.5 -- 4 -- -- 0.7 ND -- -- ND -- 16 4.59/10/20085203.6 3 155.8 8.26.6-- --<5 -- -- -- <0.5 -- <0.5 -- 5.1 -- -- 1.1 <0.5 -- -- <0.5 -- 30 9.96/17/20092,900<500 1101,140<100 <500-- --<100 -- -- -- <1 -- <1 -- <100 -- -- <100 <100 -- -- <100 -- 220 <10011/30/20093,30058 1501,570 60<9.2<25 <3.2<9.6 -- <0.050 -- <0.11 <0.050 <0.070 -- 22 <1,700 <7.6 <4 <5.6 <5 <36 <5.6 <2 290 546/14/201042<0.057 <0.057 8.2 3.4 1.7<1.5 <0.031<0.059 <0.054 <0.053 <0.032 <0.041 <0.038 <0.054 -- 0.63 <42 <0.11 <0.034 -- <0.048 <0.83 -- <0.034 1.5 0.599/15/2011110<0.057 1 19.3 1.8 2.1<1.5 <0.031<0.059 <0.054 <0.053 <0.032 <0.041 <0.038 <0.054 -- 0.72 <42 <0.11 <0.034 <0.059 <0.043 <0.83 <0.059 <0.034 5.9 1.606/13/20123702 7.8 75 7.5 2.2<1.5 <0.0311.5 <0.054 <0.053 <0.032 <0.041 <0.038 <0.054 -- 2.2 <42<0.11 <0.034 <0.059 <0.043 <0.83 <0.059 <0.034 15 5.92/24/2014 <0.50 <0.50 <0.50 <1.5 <0.50 <2.0NA <0.50<0.50 <0.50 <0.50 <1.0 <0.50 <0.50 <0.50 <0.50 <0.50 NA NA <0.50 NA NA NA NA <0.50 <0.50 <0.5010/3/2015 0.56 <0.50 <0.50 <1.0 1.8 <2.0<0.50 <0.50<0.50 <0.50 <0.50 <1.0 <0.50 <0.50 <0.50 <0.50 <0.50 NA NA <0.50 NA NA NA NA <0.50 <0.50 <0.5011/7/2017 0.78 <0.5 <0.50 <1.5 <0.50 <0.50<50 <0.50<0.50 <0.50 <0.50 <2.0 <0.50 <0.50 <0.50 <0.50 <0.50NA <5.0 <0.50 <0.50 <5.0 <5.0 <0.50 <0.50 <0.50 <0.504/14/1998 ND ND ND ND ND NS-- --NS -- -- -- ND -- NS -- ND -- -- NS NS -- -- NS -- NS NS6/12/2003 ND ND ND ND ND ND-- --NS -- -- -- ND -- ND -- ND -- -- ND NS -- -- ND -- ND ND3/8/20041.1ND ND ND ND ND-- --NS -- -- -- ND -- ND -- ND -- -- ND NS -- -- ND -- ND ND12/1/2005 ND ND ND ND ND ND-- --ND -- -- -- <0.5 -- <0.5 -- ND -- -- ND ND -- -- ND -- ND ND9/10/2008 <0.5 <0.5 <0.5 <1 <0.5 <2-- --<0.5 -- -- -- <0.5 -- <0.5 -- <0.5 -- -- <0.5 <0.5 -- -- <0.5 -- <0.5 <0.56/17/2009 <1 <5 <1 <3 <1 <5-- --<1 -- -- -- <1 -- <1 -- <1 -- -- <1 <1 -- -- <1 -- <1 <111/30/2009 <0.040 <0.060 <0.090 <0.19 <0.11 <0.23<0.62 <0.080<0.24 -- <0.050 -- <0.11 <0.050 <0.070 -- <0.080 <42 <0.19 <0.10 <0.14 <0.13 <0.90 <0.090 <0.050 <0.14 <0.0806/13/2012 <0.040 <0.060 <0.090 <0.19 <0.11 <0.23<0.62 <0.080<0.24 -- <0.050 -- <0.11 <0.050 <0.07 -- <0.080 <42 <0.19<0.10 <0.14 <0.13 <0.90 <0.090 <0.050 <0.14 <0.0802/24/2014 <0.50 <0.50 <0.50 <1.5 <0.50 NDNA <0.50<0.50 <0.50 <0.50 <1.0 <0.50 <0.50 <0.50 -- <0.50 <0.50 NA NA <0.50 <0.50 NA NA <2.0 <0.50 <0.5010/3/2015 <0.50 <0.50 <0.50 <0.50 <0.50 <2.0NA <0.50<0.50 <0.50 <0.50 <1.0 <0.50 <0.50 <0.50 -- <0.50 NA NA <0.50 NA NA NA <0.50 <0.50 <0.50 <0.5011/7/2017 <0.50 <0.5 <0.50 <1.5 <0.50 <0.50<50 <0.50<0.50 <0.50 <0.50 <2.0 <0.50 <0.50 <0.50 <0.50 <0.50NA <5.0 <0.50 <0.50 <5.0 <5.0 <0.50 <0.50 <0.50 <0.504/14/1998 ND ND ND ND ND ND-- --NS -- -- -- ND -- NS -- ND -- -- NS NS -- -- -- -- NS NS6/12/2003 ND ND ND ND ND ND-- --NS -- -- -- ND -- ND -- ND -- -- ND ND -- -- ND -- ND ND3/8/20041.40ND ND 9.6 ND ND-- --NS -- -- -- ND -- ND -- ND -- -- ND ND -- -- ND -- 1.6 ND12/1/20059/10/20086/17/20091 600 600 500 20 6 6,000 0.6 70 70 70 3 0.02 6 0.40 0.60 70 4,000 40 70 25 100 4,000 70 70 400 4005,000 260,000 84,500 85,500 20,000 6,0006,000,000 NE 6,900 8,500 70,000 3,000 50 6,000 400 600 70,000 4,000,00040,000 25,000 11,700 100,000 4,000,000 30,000 70,000 28,500 25,000Notes:"<" or ND = Not Detected at or above the laboratory detection or reporting limitConcentrations are reported in micrograms per liter (µg/l) = parts per billion (ppb)Italicized values indicate levels above GCLsJ = Estimated value below method reporting limitNA = Not AnalyzedGCL = Gross Contamination LevelConcentrations in bold print equal or exceed the April 16, 2012 NCDEQ 15A 2L NCAC Groundwater Standard (2L Standard).MW-72L StandardGCL StandardNot Sampled - Could Not LocateNot Sampled - Could Not LocateNot Sampled - Could Not LocateMW-5MW-6
Well IDSampleDateBenzeneTolueneEthylbenzeneTotal XylenesMethyl Tertiary Butyl EtherNaphthaleneAcetoneBromodichloromethanen-Butylbenzenesec-ButylbenzeneChloroformChloromethane1,2-Dibromoethane1,1-Dichloroethane1,2-Dichloroethane1,2-DichloropropaneDiisopropyl EtherEthanol2-HexanoneIsopropylbenzenep-Isopropyltoluene4-Methyl-2-pentanone (MIBK)Methyl Ethyl Ketonen-PropylbenzeneStyrene1,2,4-Trimethylbenzene1,3,5-TrimethylbenzeneHAMPTONVILLE, YADKIN COUNTY, NORTH CAROLINA2425 US HIGHWAY 21WILLIAMS GROCERYHISTORICAL GROUNDWATER ANALYTICAL RESULTSTABLE 8NCDEQ INCIDENT #150634/14/19982402ND24NDNS-- --NS -- -- -- ND -- NS -- ND -- -- NS NS -- -- NS -- NS NS6/12/20032,300ND ND 310 ND ND-- --NS -- -- -- ND -- ND -- ND -- -- ND NS -- -- ND -- ND ND3/8/20041,200ND ND 160 ND ND-- --NS -- -- -- ND --140-- ND -- -- ND NS -- -- ND -- ND ND12/1/20051,6001.9 ND ND28 54-- --ND -- -- -- <0.5 --140-- 14 -- -- 6.6 ND -- -- ND -- ND 4.89/10/20081,1301<0.57634 65.3-- --1.8------<0.5--116-- 10 -- -- 8 3.2 -- -- <0.5 -- <0.5 3.26/17/2009610<5 <1 9022 7.7-- --<1 -- -- -- <1 --66-- 6.1 -- -- 3.5 1.2 -- -- <1 -- <1 1.411/30/20098900.6 <0.90 161.330 44<6.2 <0.80<2.4 -- <0.50 -- <1.1 <0.5077-- 8.8 <420 <1.9 <1 <1.4 <1.3 <9 <0.90 <0.50 <1.4 <0.806/14/2010970<0.57 <0.54 101.130 30<15 <0.31<0.59 <0.54 <0.53 <0.32 <0.41 <0.3880-- 7.3 <420 <1.1 <0.34 -- <0.48 <8.3 <0.59 <0.34 <0.38 <0.386/13/201211/7/20174/14/19985ND ND 4 ND NS-- --NS -- -- -- ND -- NS ND -- -- NS NS -- -- NS -- NS NS6/12/20033/8/200412/1/20059/10/20086/17/20094/14/1998 ND ND ND ND ND NS-- --NS -- -- -- ND -- NS -- ND -- -- NS NS -- -- NS -- NS NS6/12/20033.8ND ND ND 4.1 ND-- --NS -- -- -- ND -- ND -- ND -- -- ND NS -- -- ND -- ND ND3/8/2004 ND ND ND ND ND ND-- --ND -- -- -- ND -- ND -- ND -- -- ND ND -- -- ND -- ND ND12/1/2005 ND ND ND ND ND ND-- --ND -- -- -- <0.5 -- <0.5 -- ND -- -- ND ND -- -- ND -- ND ND9/10/20086/17/20094/14/1998 ND ND ND ND ND NS-- --NS -- -- --0.07-- NS -- ND -- -- NS NS -- -- NS -- NS NS6/12/20033/8/200412/1/20059/10/20086/17/20096/14/201031,00046,000 3,500 16,80023,0001,3002,400 <1.211042 <2.1 <1.3860<1.5 <1.5 --560<1,700 --200-- <1.9 2,9001,300 150 4,000 1,2006/13/20122/24/201430,20047,100 3,350 12,900 7,980 1,040NA <50.0<50.0 <50.0 <50.0 <100.0998<50.0 <50.0 --590NA NA118NA NA NA1,040 202 2,900 65310/3/201511/7/2017699.5 2.2 37.4274.3 J<50 <0.500.24 J <0.50 <0.50 <2.00.73<0.5023 0.966.0 NA <5.0 0.16 J <0.50 <5.0 <5.0 0.24 J <0.50 23 1.71 600 600 500 20 6 6,000 0.6 70 70 70 3 0.02 6 0.40 0.60 70 4,000 40 70 25 100 4,000 70 70 400 4005,000 260,000 84,500 85,500 20,000 6,0006,000,000 NE 6,900 8,500 70,000 3,000 50 6,000 400 600 70,000 4,000,00040,000 25,000 11,700 100,000 4,000,000 30,000 70,000 28,500 25,000Notes:"<" or ND = Not Detected at or above the laboratory detection or reporting limitConcentrations are reported in micrograms per liter (µg/l) = parts per billion (ppb)Italicized values indicate levels above GCLsJ = Estimated value below method reporting limitNA = Not AnalyzedGCL = Gross Contamination LevelConcentrations in bold print equal or exceed the April 16, 2012 NCDEQ 15A 2L NCAC Groundwater Standard (2L Standard).MW-10MW-11RW-12L StandardGCL StandardMW-9Not Sampled - Free ProductNot Sampled - Could Not LocateNot Sampled - Could Not LocateNot Sampled - Could Not LocateNot Sampled - Could Not LocateNot Sampled - Could Not LocateNot Sampled - Could Not LocateNot Sampled - Could Not LocateNot Sampled - Could Not LocateNot Sampled - Could Not LocateNot Sampled - Could Not LocateNot Sampled - Could Not LocateNot Sampled - Could Not LocateNot Sampled - Could Not LocateNot Sampled - Free ProductNot Sampled - Could Not LocateMW-8

FIGURES

SITE
CAD FILE PREP. BYTYPE CODE REV. BY SCALE PROJECT NO.
TITLE
DATE
REFERENCE: USGS 7.5-MINUTE MAP, BROOKS CROSSROADS,
NORTH CAROLINA. DATED 2016
LATITUDE:ƒ1257+
LONGITUDE:ƒ:(67
500'1,000'
WSW-8 WSW-6
WSW-7
WSW-9
WSW-10
WSW-1
WSW-3WSW-5
WSW-2 WSW-4WSW-18
CAD FILE PREP. BYTYPE CODE REV. BY SCALE PROJECT NO.
TITLE
DATE
EXPLANATION
WATER SUPPLY WELL LOCATION
MW1
RW1
MW3
MW2
MW4
MW5
MW6
MW8
(COULD NOT LOCATE)
FORMER USTs
FORMER USTs RESIDENCE
RESIDENCE
APARTMENTS
FORMER
WILLIAMS
GROCERY
U
S
H
IGHW
A
Y

2
1
PETTY ROAD
HAM
P
T
O
N
VI
L
L
E
R
O
A
D
CAD FILE PREP. BYTYPE CODE REV. BY SCALE PROJECT NO.
TITLE
DATE
EXPLANATION
MONITORING WELL LOCATION
MW1
RW1
MW3
MW2
MW4
MW5
MW6
MW8
(COULD NOT LOCATE)
RESIDENCE
RESIDENCE
US
H
IGHW
A
Y

2
1
HAM
P
T
O
N
VI
L
L
E
R
O
A
D
474.57
474.52
474.81
474.33
474.12
474.48
474.44
474.0
0
474.2
5
474.50
CAD FILE PREP. BYTYPE CODE REV. BY SCALE PROJECT NO.
TITLE
DATE
EXPLANATION
MONITORING WELL LOCATION
GROUNDWATER FLOW DIRECTION
GROUNDWATER CONTOUR LINE
GROUNDWATER ELEVATION (AT WELL)474.33
MW1
RW1
MW3
MW2
MW4
MW5
MW6
MW8
(COULD NOT LOCATE)
RESIDENCE
RESIDENCE
US
H
IGHW
A
Y

2
1
HAM
P
T
O
N
VI
L
L
E
R
O
A
D
27,000
74
21,000
69
<0.50
0.78
<0.50
—J/
—J/
CAD FILE PREP. BYTYPE CODE REV. BY SCALE PROJECT NO.
TITLE
DATE
EXPLANATION
MONITORING WELL LOCATION
BENZENE ISOCONCENTRATION LINE
BENZENE CONCENTRATION (AT WELL)<0.50
Notes:
1.Groundwater samples collected on
November 7, 2017.
IMAGE SOURCE: NC GEOSPATIAL DATABASE
MW1
RW1
MW3
MW2
MW4
MW5
MW6
MW8
(COULD NOT LOCATE)
RESIDENCE
RESIDENCE
US
H
IGHW
A
Y

2
1
HAM
P
T
O
N
VI
L
L
E
R
O
A
D
34,000
1,000
41,000
9.5
<0.50
<0.50
<0.50
—J/
CAD FILE PREP. BYTYPE CODE REV. BY SCALE PROJECT NO.
TITLE
DATE
EXPLANATION
MONITORING WELL LOCATION
TOLUENE ISOCONCENTRATION LINE
TOLUENE CONCENTRATION (AT WELL)<0.50
Notes:
1.Groundwater samples collected on
November 7, 2017.
IMAGE SOURCE: NC GEOSPATIAL DATABASE
MW1
RW1
MW3
MW2
MW4
MW5
MW6
MW8
(COULD NOT LOCATE)
RESIDENCE
RESIDENCE
US
H
IGHW
A
Y

2
1
HAM
P
T
O
N
VI
L
L
E
R
O
A
D
2,700
130
3,500
<0.50
<0.50
<0.50
2.2
—J/
CAD FILE PREP. BYTYPE CODE REV. BY SCALE PROJECT NO.
TITLE
DATE
EXPLANATION
MONITORING WELL LOCATION
ETHYLBENZENE ISOCONCENTRATION LINE
ETHYLBENZENE CONCENTRATION (AT WELL)<0.50
Notes:
1.Groundwater samples collected on
November 7, 2017.
IMAGE SOURCE: NC GEOSPATIAL DATABASE
MW1
RW1
MW3
MW2
MW4
MW5
MW6
MW8
(COULD NOT LOCATE)
RESIDENCE
RESIDENCE
US
H
IGHW
A
Y

2
1
HAM
P
T
O
N
VI
L
L
E
R
O
A
D
14,200
680
20,800
<1.5
<1.5
<1.5
37.4
—J/
CAD FILE PREP. BYTYPE CODE REV. BY SCALE PROJECT NO.
TITLE
DATE
EXPLANATION
MONITORING WELL LOCATION
TOTAL XYLENES ISOCONCENTRATION LINE
TOTAL XYLENES CONCENTRATION (AT WELL)<0.50
Notes:
1.Groundwater samples collected on
November 7, 2017.
IMAGE SOURCE: NC GEOSPATIAL DATABASE
MW1
RW1
MW3
MW2
MW4
MW5
MW6
MW8
(COULD NOT LOCATE)
RESIDENCE
RESIDENCE
US
H
IGHW
A
Y

2
1
HAM
P
T
O
N
VI
L
L
E
R
O
A
D
30,000
<25
<500
27
—J/
<0.50
<0.50
<0.50
CAD FILE PREP. BYTYPE CODE REV. BY SCALE PROJECT NO.
TITLE
DATE
EXPLANATION
MONITORING WELL LOCATION
MTBE ISOCONCENTRATION LINE
MTBE CONCENTRATION (AT WELL)<0.50
Notes:
1.Groundwater samples collected on
November 7, 2017.
IMAGE SOURCE: NC GEOSPATIAL DATABASE
MW1
RW1
MW3
MW2
MW4
MW5
MW6
MW8
(COULD NOT LOCATE)
RESIDENCE
RESIDENCE
US
H
IGHW
A
Y

2
1
HAM
P
T
O
N
VI
L
L
E
R
O
A
D
820
39
1,300
4.3 J
<0.50
<0.50
<0.50
—J/
CAD FILE PREP. BYTYPE CODE REV. BY SCALE PROJECT NO.
TITLE
DATE
EXPLANATION
MONITORING WELL LOCATION
NAPHTHALENE ISOCONCENTRATION LINE
NAPHTHALENE CONCENTRATION (AT WELL)<0.50
Notes:
1.Groundwater samples collected on
November 7, 2017.
IMAGE SOURCE: NC GEOSPATIAL DATABASE
MW1
RW1
MW3
MW2
MW4
MW5
MW6
MW8
(COULD NOT LOCATE)
RESIDENCE
RESIDENCE
US
H
IGHW
A
Y

2
1
HAM
P
T
O
N
VI
L
L
E
R
O
A
D
CAD FILE PREP. BYTYPE CODE REV. BY SCALE PROJECT NO.
TITLE
DATE
EXPLANATION
MONITORING WELL LOCATION
Notes:
1.Groundwater samples collected on
November 7, 2017.
2.Concentrations shown exceed 2L Standard.
3.Values shown in ITALICS exceed GCL for
constituent.
IMAGE SOURCE: NC GEOSPATIAL DATABASE

APPENDIX A

FIELD NOTES

APPENDIX B

LABORATORY ANALYTICAL RESULTS
Page 1 of 38
Page 2 of 38
Page 3 of 38
Page 4 of 38
Page 5 of 38
Page 6 of 38
Page 7 of 38
Page 8 of 38
Page 9 of 38
Page 10 of 38
Page 11 of 38
Page 12 of 38
Page 13 of 38
Page 14 of 38
Page 15 of 38
Page 16 of 38
Page 17 of 38
Page 18 of 38
Page 19 of 38
Page 20 of 38
Page 21 of 38
Page 22 of 38
Page 23 of 38
Page 24 of 38
Page 25 of 38
Page 26 of 38
Page 27 of 38
Page 28 of 38
Page 29 of 38
Page 30 of 38
Page 31 of 38
Page 32 of 38
Page 33 of 38
Page 34 of 38
Page 35 of 38
Page 36 of 38
Page 37 of 38
Page 38 of 38