HomeMy WebLinkAboutWS-6093_22446_CA_MRP_ 20120607
June 7, 2012
Mr. Herbert Berger, Hydrogeologist
North Carolina Department of Environment and Natural Resources
DWM/UST Section
1637 Mail Service Center
Raleigh, North Carolina 27699-1637
RE: Groundwater Monitoring Report: May 2012
Moody’s Grocery
912 Old Highway 21
State Road, North Carolina 28676
IN: TF-22446
Contract Number: 4348-1C
Dear Mr. Berger:
Enclosed please find one copy of the Groundwater Monitoring Report for May 2012 completed by
Crawford Environmental Services, Inc. for the referenced facility as part of the State Lead Contract. The
report was prepared in accordance with North Carolina Department of Environment and Natural
Resources (NCDENR) directives dated April 18, 2012, and is being delivered to the Raleigh, North
Carolina NCDENR office. Should you have questions regarding the enclosed material, or if additional
information is required, please feel free to contact me at (540) 343-6256.
Best Regards,
Daniel J. Fisher
Program Manager
Enclosures
GROUNDWATER MONITORING REPORT:
May 2012
Moody’s Grocery
912 Old Highway 21
State Road, North Carolina 28676
Incident Number 22446
Submitted To:
Mr. Herbert Berger, Hydrogeologist
North Carolina Department of
Environment and Natural Resources
DWM/UST Section
1637 Mail Service Center
Raleigh, North Carolina 27699-1637
Prepared For:
State Lead Contract
North Carolina Department of
Environment and Natural Resources
DWM/UST Section
June 7, 2012
CES Job Number: 16.171
Prepared By: Approved By:
___________________
Daniel J. Fisher Charles F. Crawford
Program Manager President
i
TABLE OF CONTENTS
SIGNATURE/CERTIFICATION PAGE ................................................................................................. ii
EXECUTIVE SUMMARY ....................................................................................................................... iii
1.0 INTRODUCTION ......................................................................................................................... 1
2.0 SITE ASSESSMENT ..................................................................................................................... 1
2.1 Site Description ................................................................................................................... 1
2.2 Site History ......................................................................................................................... 1
2.3 Topography ......................................................................................................................... 4
2.4 Local Geology ..................................................................................................................... 5
2.5 Receptor Survey .................................................................................................................. 5
2.6 Hydrogeology ..................................................................................................................... 7
3.0 RISK ASSESSMENT .................................................................................................................... 9
3.1 Identification of Receptors .................................................................................................. 9
3.1.1 On-Site Receptors .................................................................................................. 9
3.1.2 Off-Site Receptors ............................................................................................... 11
3.1.3 Identification of Exposure Pathways ................................................................... 11
3.1.3.1 Inhalation ............................................................................................... 11
3.1.3.2 Ingestion ................................................................................................. 11
3.1.3.3 Dermal Contact ....................................................................................... 11
4.0 GROUNDWATER MONITORING REPORT SUMMARY .................................................. 11
Tables
Table 1. Potential Receptor Information ............................................................................ 5
Table 2. Summary of Groundwater Elevation Data ........................................................... 7
Table 3. Summary of Calculated Purge Volumes ............................................................... 9
Figures
Figure 1. Site Location Map ................................................................................................ 2
Figure 2. Site Plan ............................................................................................................... 3
Figure 3. Potential Receptor Map ........................................................................................ 6
Figure 4. Potentiometric Surface Map (05/09/12) ............................................................... 8
Figure 5. Dissolved-Phase COC Map ................................................................................ 10
Appendices
Appendix A. Photo-Documentation
Appendix B. Groundwater Quality Data
Appendix C. Laboratory Certificates of Analysis and Chain-of-Custody Documentation
iii
EXECUTIVE SUMMARY
X Drinking wells affected
X Drinking wells potentially threatened
Surface water affected
Surface water potentially threatened
Free-phase product in groundwater
X Dissolved-phase concentrations present which exceed
current water quality standards
X Sump, basement, utility potentially threatened
Sump or basement affected
Utility affected
X Residual-phase contaminants present that may impact
groundwater
1
1.0 INTRODUCTION
Crawford Environmental Services, Inc. (CES) has completed a Groundwater Monitoring Report
(GMR) associated with a confirmed petroleum release from a former underground storage tank (UST)
system serving Moody’s Grocery in State Road, North Carolina. This report, prepared in accordance with
North Carolina Department of Environment and Natural Resources (NCDENR) directive dated April 18,
2012, as part of the State Lead Contract, is being delivered to the Raleigh, North Carolina NCDENR
office.
2.0 SITE ASSESSMENT
2.1 Site Description
The subject property is located at 912 Old Highway 21 in a mixed-use area within the
jurisdictional limits of State Road, North Carolina (Figure 1). The site is improved with a one-
story building with a full basement currently serving as Moody’s Grocery. The site formerly
maintained one 6,000-gallon gasoline UST, two 3,000-gallon gasoline USTs, and one 550-gallon
kerosene UST, all of which were removed from the ground in March 2000. During UST closure
activities, an orphan 550-gallon UST of unknown contents also was discovered and removed
from the ground. The site further is improved with asphalt and concrete parking/access areas.
The property is bordered to the north by Old Highway 21 and to the west by Mining Ridge
Church Road (State Road 1913). Residential and agricultural parcels border the site to the south
and east. The site obtains potable water from an on-site water supply well (WSW-1). A site plan
depicting pertinent features of the subject property is provided as Figure 2. Photo-documentation
is included as Appendix A.
2.2 Site History
March 2000
Tank closure activities associated with one 6,000-gallon gasoline UST, two 3,000-gallon
gasoline USTs, one 550-gallon kerosene UST, and one orphan 550-gallon UST of unknown
contents were completed in March 2000. Soil samples collected from the UST basins yielded
total petroleum hydrocarbon gasoline-range (TPH-GRO) and total petroleum hydrocarbon diesel-
range organics (TPH-DRO) results in excess of the North Carolina State Action Level of 10.0
parts per million.
December 2002:
Due to the presence of residual-phase impacts observed during UST closure activities,
NCDENR requested further investigation to evaluate the extent of the confirmed release and the
potential risk to human health and the environment. S&ME conducted a modified Phase I
Limited Site Assessment (LSA) including the installation of two two-inch groundwater
monitoring wells (MW-1 and MW-2) proximal to the former tank basins. Subsequent
groundwater monitoring revealed dissolved-phase TPH and total benzene, toluene, ethylbenzene,
and xylenes (BTEX) compounds in excess of the North Carolina 15A NCAC 2L .0202 (2L)
groundwater standards in samples collected from the monitoring wells.
A total of 31 potable water supply wells were identified within 1,500 feet of the site
during the site reconnaissance conducted as part of Phase I LSA activities. Municipal water was
not available to the area at the time of the receptor survey.
FIGURE 1
Site Location Map
Moody’s Grocery
912 Old Highway 21
State Road, North Carolina 28676
600 Towne Centre Blvd. Suite 305
Pineville, North Carolina 28134
704-889-0178 (office) 704-889-0179 (fax)
THURMOND, NORTH CAROLINA
Source: Delorme Topo USA ver. 7 Scale: 1:12,000 Contour Interval: 250 Feet
Vertical Datum: National Geodetic Vertical Datum
1929
Horizontal Datum: North American Datum 1927
Project: May 2012 GMR
Latitude: 36o 20’ 23.23” N
Longitude:
81o 53’ 26.26” W
Client: NCDENR
CES Job #: 16.171
Date: June 4, 2012
SITE
SITE
REV0Site PlanMoody's Grocery912 Old Highway 21State Road, North Carolina 28676Figure TitleDRAWING NUMBERBYDATEREVCK.: APP'D.: CFCSCALE: 1" = 30'CES PROJ. NO.: 16.171GroundwaterMonitoring Report600 Towne Centre Blvd. Suite 305Pineville, North Carolina 28134704-889-0178704-889-0179 (fax)Figure 2JAN 2 2012DR.: DJFWNSELEGENDOld Highway 21IN 22446MW-2123456Moody's GroceryEstimated Drainfield LocationMW-1MW-3MW-4Fmr. Kerosene Tank BasinFmr. Unknown Tank BasinMonitoring WellFmr. Dispensing AreaFmr. Gasoline Tank Basin1234Fmr. Gasoline Tank Basin5Fmr. Gasoline Tank Basin6Moody ResidenceMining Ridge Church RoadA sp h a lt D rivew a yGrassy AreaGrassy AreaGrassy AreaGrassy Area
4
Subsequent groundwater monitoring revealed dissolved-phase TPH and BTEX
compounds in excess of the 2L groundwater standards in groundwater samples collected from
water supply wells WSW-2 (Dwight Moody Residence) and WSW-6 (Emogene Moody
Residence). As a result, NCDENR installed point-of-entry (POE) filtration systems on the
referenced supply wells.
2005 to 2010:
In accordance with NCDENR directives, Terraine, Inc. (Terraine) conducted additional
groundwater monitoring events in 2005. Dissolved-phase BTEX concentrations continued to
exceed the 2L groundwater standards in groundwater samples collected from monitoring wells
MW-1 and MW-2.
Groundwater monitoring of supply wells WSW-1, WSW-2, and WSW-6 revealed
elevated dissolved-phase TPH and BTEX compounds in excess of the 2L groundwater standards.
Additional monitoring of supply wells WSW-3, WSW-4 and WSW-5 did not yield total BTEX
concentrations above the 2L groundwater standards. In 2008, monitoring of the POE filtration
systems connected to water supply well WSW-2 and WSW-6 did not reveal BTEX compounds
above the respective laboratory method detection limits.
In accordance with observed site conditions at the subject site, NCDENR requested an
additional investigation to be conducted by Terraine to further define the extent of adsorbed- and
dissolved-phase compounds and to determine the estimated groundwater flow direction. As part
of the additional investigation, two additional two-inch monitoring wells (MW-3 and MW-4)
were installed at the subject site in 2010. Subsequent groundwater monitoring revealed elevated
dissolved-phase total BTEX compounds in the sample collected from monitoring well MW-1.
Groundwater samples collected from monitoring wells MW-2, MW-3, and MW-4 did not yield
BTEX concentrations above respective laboratory detection limits.
In 2010, benzene, 1,2-dichloroethane, and 1,2-dichloropropoane were measured in excess
of the 2L groundwater standards in the sample collected from water supply well WSW-6 and
diisopropyl ether (IPE) was measured above the laboratory method detection limit in the sample
collected from water supply well WSW-5.
December 2011:
In accordance with NCDENR directives, CES completed a groundwater monitoring event
at the subject site. As part of GMR activities, CES collected groundwater samples from
monitoring wells MW-1, MW-2, MW-3, and MW-4 and water supply well WSW-5. CES was
unable to contact residents of WSW-1, WSW-2, and WSW-6, therefore, samples were not
collected. Laboratory analysis of the groundwater samples yielded results in excess of the
respective 2L Groundwater Standards at monitoring wells MW-1 and MW-2. The groundwater
sample collected from WSW-5 did not yield results in excess of the respective laboratory method
detection limit.
2.3 Topography
The subject site is located within the jurisdictional limits of State Road, North Carolina
and is situated in the Alligator Back Formation within the Blue Ridge Belt in the Blue Ridge
Physiographic Province. According to the U.S. Geological Survey 7 ½ Minute Series
Topographic Map of the Thurmond Quadrangle, North Carolina, the site elevation is
approximately 1,330 feet above mean sea level. The nearest identified surface water body, a
small pond, is located approximately 850 feet southeast of the subject site.
5
2.4 Local Geology
CES reviewed the Geologic Map of North Carolina prepared by the Department of
Natural Resources and Community Development, dated 1985. Published geologic information
indicates that local geologic structures primarily comprise the Alligator Back Formation within
the Blue Ridge Belt of the Blue Ridge Physiographic Province
Mica schist and phyllite – laminated to thin layered; interlayered with minor biotite-
muscovite gneiss and amphibolite.
The above descriptions were extracted from the Geologic Map of North Carolina
prepared by the Department of Natural Resources and Community Development, dated 1985.
Drill cuttings collected during previous soil boring activities consisted of a silty clay
matrix extending to approximately 50-feet below ground surface (bgs). Competent bedrock has
not been observed during previous soil boring activities.
2.5 Receptor Survey
On December 4, 2011, CES performed an updated site reconnaissance to identify the
potential receptors located within a 1,000-foot radius of the subject property. Visual inspections
were performed at the properties for evidence indicating the presence of supply wells/springs.
The approximate locations of the potential receptors are presented on Figure 3. Table 1 is a
summary of the potential receptors including property owner/occupant address and water usage
corresponding to the locations presented on Figure 3.
Table 1.
Potential Receptor Information
Moody's Grocery
Incident Number: 22446
Well
Identification
Parcel
Identification Property Owner(s) Property Address Owner Address Usage
WSW-1 602043 Don & Peggy Moody 912 Old Highway 21 1050 Old Highway 21 Potable Water
WSW-2 604032 Donna & Dwight Moody 934 Old Highway 21 934 Old Highway 21 Potable Water
WSW-3* 4944-00-28-
9747 Roger Hanes 893 Old Highway 21
184 Dewitt Road
Glade Valley, NC
28627
Potable Water
WSW-4 605430 Bradley S. Holbrook 265 Hidden Chambers Drive 265 Hidden Chambers
Drive Potable Water
WSW-5 605327 Robert & Meredith Shaw 276 Hidden Chambers Drive 276 Hidden Chambers
Drive Potable Water
WSW-6 604808 Don & Peggy Moody 1020 Old Highway 21 1050 Old Highway 21 Potable Water
Full mailing address is: (address given), State Road, North Carolina 28676, unless noted otherwise.
(*) – Parcel is in Surry County, North Carolina
FIGURE 3
Potential Receptor Map
Moody’s Grocery
912 Old Highway 21
State Road, NC 28676
600 Towne Centre Blvd. Suite 305
Pineville, North Carolina 28134
704-889-0178 (office) 704-889-0179 (fax)
STATE ROAD, NORTH
CAROLINA
Source: U.S. Geological Survey
Scale: 1.0” = 350.0’
Imagery Date: 02/29/2008
Latitude: 36o 20’ 23.23” N
Longitude: 81o 53’ 26.26” W
Project: May 2012 GMR
Client: NCDENR
CES Job #: 16.171
Date: June 2, 2012
WSW-2
WSW-4
WSW-6
WSW-3
SITE
WSW-5
WSW-1
7
2.6 Hydrogeology
In accordance with NCDENR directives, CES performed a groundwater monitoring event
to assess current dissolved-phase contaminant levels and free-product thicknesses on May 9,
2012. CES collected groundwater samples from four monitoring wells (MW-1, MW-2, MW-3,
and MW-4). CES also collected groundwater samples from potable supply wells WSW-1, WSW-
4, WSW-5, and WSW-6. CES was unable to contact the property owners of WSW-2 (Dwight
Moody), therefore a groundwater sample was not collected. Prior to purging and sampling, a
Heron InstrumentsTM H.01L interface probe was used to record static water levels and to
investigate for the presence of free-phase petroleum at the four monitoring points. CES recorded
static water levels using the interface probe from a reference mark scribed at the top of each well
casing. Groundwater elevation data is presented in Table 4. Groundwater flow at the site was
determined using the triangulation method of the relative groundwater elevations observed within
the four monitoring wells. Figure 4 is a potentiometric surface map generated from the relative
elevations of equilibrated groundwater as measured on May 9, 2012. Relative groundwater
elevations depict a primarily southern flow component. Groundwater elevation data is
presented in Table 2.
Table 2.
Groundwater Elevation Data
Moody's Grocery
Incident Number: 22446
Well
Identification
Top of Casing
(feet)
Total Depth
(feet) Date Measured Depth to
Water (feet)
Relative
Groundwater
Elevation (feet)
MW-1 1,330.00 60.0
12/4/2002 47.95 1,277.95
4/15/2004 36.86 1,293.14
11/7/2005 39.67 1,290.33
9/24/2008 47.09 1,287.05
3/9/2010 42.95 1,287.05
12/4/2011 43.55 1,286.45
05/09/2012 42.72 1,287.28
MW-2 1,330.65 60.0
12/4/2002 49.06 1,281.59
4/15/2004 36.95 1,293.70
11/7/2005 39.88 1,290.77
9/24/2008 47.35 1,373.95
3/9/2010 43.30 1,287.35
12/4/2011 44.01 1,286.64
05/09/2012 43.10 1,287.55
MW-3 1,329.84 52.0
3/9/2010 42.58 1,272.58
12/4/2011 43.37 1,286.47
05/09/2012 42.50 1,287.34
MW-4 1,320.36 45.0
3/9/2010 35.12 1,285.24
12/4/2011 36.57 1,283.79
05/09/2012 35.10 1,285.26
Elevations measured by CES on May 9, 2012, relative to arbitrary site datum of 1,330.00 feet.
REV0Potentiometric Surface Map (05-09-12)Moody's Grocery912 Old Highway 21State Road, North Carolina 28676Figure TitleDRAWING NUMBERBYDATEREVCK.: APP'D.: CFCSCALE: 1" = 30'CES PROJ. NO.: 16.171GroundwaterMonitoring Report600 Towne Centre Blvd. Suite 305Pineville, North Carolina 28134704-889-0178704-889-0179 (fax)Figure 4JAN 2 2012DR.: DJFWNSELEGENDOld Highway 21IN 22446MW-243.10'123456Moody's GroceryEstimated Drainfield LocationMW-142.72'MW-342.50'MW-435.10'Fmr. Kerosene Tank BasinFmr. Unknown Tank BasinMonitoring WellFmr. Dispensing AreaFmr. Gasoline Tank Basin1234Fmr. Gasoline Tank Basin5Fmr. Gasoline Tank Basin6Moody ResidenceMining Ridge Church RoadA sp h a lt D rivew a yGrassy AreaGrassy AreaGrassy Area38.00'40.00'42.00'36.00'Grassy AreaEstimated Groundwater
Flow Direction
9
Prior to sampling, CES purged each well to remove suspended solid material from the water
column and to collect samples representative of aquifer conditions. Each well was purged until a
minimum of three well volumes had been displaced. Exterior spigots were purged for approximately 10
minutes prior to collection of supply well samples. Groundwater samples were collected using dedicated,
disposable, high-density polyethylene (HDPE) bailers and were transferred directly into the appropriate
sample containers immediately upon collection. Disposable, nitrile gloves were used during all phases of
sample collection. The groundwater samples were labeled and maintained on ice pending delivery to an
independent laboratory. The supply well and monitoring well samples were submitted to Prism
Laboratories, Inc. (Prism) in Charlotte, North Carolina for volatile organic compounds (VOCs), methyl
tert-butyl ether (MTBE), and diisopropyl ether (IPE) via Standard Method (SM) 6200B. Strict sample
security and chain-of-custody documentation were maintained during all phases of transport. A summary
of the calculated purge volumes is presented in Table 3. A summary of the historic and current
groundwater quality data is presented in Appendix B. A dissolved-phase concentrations of concern
(COC) map displaying the chemical analytical results for the monitoring wells is included as Figure 5.
Chain-of-custody documentation and the laboratory Certificates of Analyses are included as Appendix C.
Table 3.
Summary of Calculated Purge Volumes
Moody's Grocery
Incident Number: 22446
Well
Identification Date
Depth to
Product
(feet)
Depth to
Water
(feet)
Amount
of
Product
(feet)
Total
Well
Depth
(feet)
Water
Column
(feet)
Well
Diameter
(inches)
Conversion
Factor
(gallons/feet)
Volume
Purged
(gallons)
MW-1 05-09-12 NA 42.72 NA 60.0 17.28 2.0 0.163 8.45
MW-2 05-09-12 NA 43.10 NA 60.0 16.90 2.0 0.163 8.26
MW-3 05-09-12 NA 42.50 NA 52.0 9.50 2.0 0.163 4.64
MW-4 05-09-12 NA 35.10 NA 45.0 9.90 2.0 0.163 4.84
3.0 RISK ASSESSMENT
CES performed a risk assessment to evaluate the potential risk to human health and the
environment associated with the petroleum compounds detected at the site. The findings of the risk
assessment are presented in the following sections.
3.1 Identification of Receptors
The following sections present the potential on- and off-site receptors of petroleum
contaminants existing on-site and the possible pathways of exposure.
3.1.1 On-Site Receptors
The subject property is served potable water from water supply well WSW-1
located on-site. Groundwater samples collected from WSW-1 did not yield results in
excess of the respective laboratory method detection limit.
The subject site maintains a full basement that could serve as a potential receptor
to the migration of vapor-phase petroleum constituents.
REV0Dissolved-Phase COC MapMoody's Grocery912 Old Highway 21State Road, North Carolina 28676Figure TitleDRAWING NUMBERBYDATEREVCK.: APP'D.: CFCSCALE: 1" = 30'CES PROJ. NO.: 16.171GroundwaterMonitoring Report600 Towne Centre Blvd. Suite 305Pineville, North Carolina 28134704-889-0178704-889-0179 (fax)Figure 5JAN 2 2012DR.: DJFWNSELEGENDOld Highway 21IN 2244612345Moody's GroceryEstimated Drainfield LocationMW-3 NDMW-4 NDFmr. Kerosene Tank BasinFmr. Unknown Tank BasinMonitoring WellFmr. Dispensing AreaFmr. Gasoline Tank Basin1234Fmr. Gasoline Tank Basin5Fmr. Gasoline Tank Basin6Moody ResidenceMining Ridge Church RoadA sp h a lt D rivew a yGrassy AreaGrassy AreaGrassy AreaGrassy AreaB = 410T = 250EB = 67X = 330MTBE = 15N = 14IPE = 87EDB = 0.59MW-1MW-2B = NDT = NDEB = NDX = NDMTBE = NDN = NDIPE = 2.0EDB = 0.39J
11
3.1.2 Off-Site Receptors
The receptor survey performed during GMR activities yielded six potential
receptors within the 1,000-foot search radius. Groundwater analysis performed on the
samples collected from WSW-4 and WSW-5 did not yield results in excess of the
respective laboratory method detection limit, however, the groundwater sample collected
from WSW-6 yielded chloromethane below the respective 2L groundwater standard. The
nearest identified surface water body, a small pond, is located approximately 850 feet
southeast of the subject site.
3.1.3 Identification of Exposure Pathways
The identification of potential exposure pathways is necessary to evaluate the
risk posed by the extent of the release. An exposure pathway requires that there be some
mechanism for any person or population to come into contact with one or more of the
media which contain the contaminant of concern. No risk is assumed in the absence of
contamination or in the absence of an exposure pathway.
3.1.3.1 Inhalation
The presence of asphalt and concrete surface covering in the immediate
vicinity of the UST basins and product lines mitigates concern associated with
potential exposure to VOC vapors emanating from the subsurface. The
surrounding area consists of residential parcels. The site building maintains a
basement which could serve as a potential exposure pathway to the inhalation of
vapor-phase petroleum constituents.
3.1.3.2 Ingestion
The presence of on- and off-site private supply wells could serve as
potential exposure pathways to petroleum-impacted groundwater.
3.1.3.3 Dermal Contact
The UST basins and product lines are covered with asphalt and concrete
mitigating concern associated with inadvertent contact with adsorbed-phase
contaminants.
4.0 GROUNDWATER MONITORING REPORT SUMMARY
Laboratory analyses performed on the groundwater samples collected during this investigation
yielded measurable levels of dissolved-phase petroleum in monitoring wells MW-1 and MW-2. In
addition, the groundwater sample collected from monitoring well MW-1 yielded results in excess of the
respective 2L Groundwater Standards. Groundwater samples collected from water supply wells WSW-1,
WSW-4, WSW-5, and WSW-6 did not yield results in excess of the respective laboratory method
detection limits. Dissolved-phase contaminant levels at monitoring well MW-1 have decreased since the
previous sampling event, however, benzene has increased since the initial sampling event (12/04/2002).
The increase in benzene indicates that source area contaminants remain proximal to the former UST
system. CES recommends semi-annual sampling of the monitoring and supply wells to confirm the
presence of this trend. Should the increasing contaminant trend be confirmed, CES recommends
implementing an in-situ bioremediation program to stimulate the natural attenuation process. This report,
12
prepared in accordance with NCDENR correspondence dated April 18, 2012, is being delivered to Mr.
Herbert Berger of the Raleigh, North Carolina NCDENR office.
APPENDIX A
Photo-Documentation
Photo-Documentation
Moody’s Grocery
912 Old Highway 21
State Road, North Carolina 28676
IN: TF-22446
Page 1
Moody's Grocery # 1 Moody's Grocery # 2
View of Moody's Grocery. View of water supply well WSW-2.
Moody's Grocery # 3
View of cracked surface completion at monitoring
well MW-2.
APPENDIX B
Groundwater Quality Data
Table 4.Groundwater Quality DataMoody's GroceryIncident Number: 22446Well I.D. Sample DateBenzene1TolueneEthylbenzeneXylenes (Total)MTBEIPEEDBNaphthaleneAcetonen-ButylbenzeneChlorobenzeneChloromethane1,2-Dichloroethane1,2-DichloropropaneMethyl Butyl KetoneMethyl Isobutyl KetoneIsopropylbenzene4-Isopropyltoluenen-Propylbenzenep-Isopropyltoluenesec-Butylbenzenetert-Butylbenzene1,3,5-Trimethylbenzene1,2,4-TrimethylbenzeneLead12/4/2002400 730120740 47 170NA224NA NA NA NA31NA NA NA NA NA NA NA NA NA NA NA64/15/2004270 73076 41037 130NA ND3 NA NA NA NA ND NA NA NA NA NA NA NA NA NA NA NA NA11/7/2005121138 42.1 22922.764.5ND NA NA NA ND ND5.14NA NA NA NA NA NA NA NA NA NA NA NA5/2/2007156156 20.4 148 7.76 64.90.8205.59ND0.570ND ND11.5ND ND ND0.990ND1.39ND ND ND9.16 19.4NA9/24/2008184157 17.7 113 3.7069.8 1.52ND ND ND ND ND17.3ND ND ND0.860ND1.35ND ND ND5.89 14.4NA3/9/2010300150 26 177 1781 2.3 7.83.4 J4ND ND ND11ND ND ND1.9ND1.6 1.2 0.69 0.61 11 23NA12/4/20111,000500 140840 22 170 0.33 35ND ND ND3.344ND26 9.6 9.6 3.6 11NA0.50 0.67 44 100NA5/9/2012410250 67 330 1587 0.59 14ND1.3ND ND13ND1.2 1.2 2.9 0.79 4.2NA ND ND24 73NA12/4/20024.222 6.6 26ND1.4NA2.1NA NA NA NA ND NA NA NA NA NA NA NA NA NA NA NA ND4/15/2004 ND ND ND5.5 3.3200NA7.4NA NA NA NA45NA NA NA NA NA NA NA NA NA NA NA NA11/7/200514.73.90 8.24 11.1ND175ND NA NA NA ND ND25.8ND NA NA NA NA NA NA NA NA NA NA NA5/2/2007 ND ND ND ND0.510 29.9ND ND ND ND ND ND4.46ND ND ND ND ND ND ND ND ND ND ND NA9/24/2008 ND ND ND ND ND22.4ND ND ND ND ND ND1.10ND ND ND ND ND ND ND ND ND ND ND NA3/9/2010 ND ND ND ND ND4.2ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND NA12/4/2011 ND ND ND ND0.75 J 9.1ND ND ND ND ND ND1.1ND ND ND ND ND ND NA ND ND ND ND NA5/9/2012 ND ND ND ND0.39J 2ND ND ND ND ND ND ND ND ND ND ND ND ND NA ND ND ND ND NA3/9/2010 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND6212/4/2011 ND ND ND ND ND ND ND ND ND ND ND ND0.51ND ND ND ND ND ND NA ND ND ND ND NA5/9/2012 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND NA ND ND ND ND NA3/9/2010 ND ND ND ND ND ND ND ND1.4 JND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND12/4/2011 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND NA ND ND ND ND NA5/9/2012 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND NA ND ND ND ND NA10/4/2001 ND ND ND ND ND ND ND ND NA NA NA NA ND NA NA NA NA NA NA NA NA NA ND ND NA9/12/2002 ND ND ND ND ND2NA NA NA NA ND ND 1.2 NA NA NA NA NA NA NA NA NA ND ND NA9/9/2004 ND ND ND ND NA1.4ND ND NA NA NA NA ND ND ND ND ND ND ND NA NA NA ND ND NA11/7/2005 ND ND ND1.35ND ND ND0.860ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND9/24/2008 ND ND ND ND ND ND ND ND ND ND ND ND0.690ND ND ND ND ND ND ND ND ND ND ND ND3/9/2010 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND NA12/4/20115/9/2012 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND NA ND ND ND ND NA9/12/2002150ND ND ND64 360NA NA NA NA270ND6NA NA NA NA NA NA NA NA NA ND ND NA11/7/20051.02ND ND ND1.71 3.88ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND1/7/200852.1ND ND ND69.8ND99.9ND ND ND ND ND4.65ND ND ND 0.500 ND ND ND ND ND ND ND ND9/24/2008 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND3/9/201012/4/20115/9/201210/4/2001 ND ND ND ND ND ND ND NA NA ND NA NA ND NA NA NA NA NA NA NA NA NA ND ND NA9/12/2002 ND ND ND ND ND ND NA ND NA NA ND ND ND NA NA NA NA NA NA NA NA NA ND ND NA9/9/2004 ND ND ND ND NA ND ND ND NA NA NA NA ND ND ND ND ND ND ND ND ND ND ND ND NA11/7/2005 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND9/24/2008 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND3/9/2010 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND NA5/9/201211/7/2005 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND NA9/24/2008 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND NA3/9/2010 ND ND ND ND ND ND ND ND1.4 JND ND ND ND ND ND ND ND ND ND ND ND ND ND ND NA5/9/2012 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND NA ND ND ND ND NAWSW-4Not SampledNot SampledWSW-2Not SampledNot SampledWSW-3MW-1MW-2MW-3MW-4WSW-1Not Sampled
Table 4.Groundwater Quality DataMoody's GroceryIncident Number: 22446Well I.D. Sample DateBenzene1TolueneEthylbenzeneXylenes (Total)MTBEIPEEDBNaphthaleneAcetonen-ButylbenzeneChlorobenzeneChloromethane1,2-Dichloroethane1,2-DichloropropaneMethyl Butyl KetoneMethyl Isobutyl KetoneIsopropylbenzene4-Isopropyltoluenen-Propylbenzenep-Isopropyltoluenesec-Butylbenzenetert-Butylbenzene1,3,5-Trimethylbenzene1,2,4-TrimethylbenzeneLead10/4/200132046 25 278ND25ND ND ND ND NA NA1NA NA NA NA NA NA NA NA NA14530NA9/12/200225087 19 228ND27NA NA NA NA ND ND6.8NA NA NA NA NA NA NA NA NA22 48NA11/7/2005 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND NA2/12/2008 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND NA3/9/201021026 13 116ND20ND3.9 68 0.97 JND ND6.9 1.2ND ND1.4ND1.2ND0.62ND11 22NA12/4/20115/9/2012 ND ND ND ND ND ND ND ND ND ND ND2.1ND ND ND ND ND ND ND NA ND ND ND ND NA9/12/2002 ND ND ND ND ND ND NA NA NA NA ND ND ND ND NA NA NA NA NA NA NA NA ND ND NA9/9/2004 ND ND ND ND NA ND ND ND NA NA NA NA NA ND ND ND ND ND ND ND ND ND ND ND NA5/9/20121 600 600 500 20 70 0.02 6 6,000 70 50 3,000 0.4 0.6 NE NE 70 NE 70 NE 70 70 400 400 155,000 260,000 84,500 85,500 20,000 70,000 50 6,000 6,000,000 6,900 50,000 NE 400 600 NE NE 25,000 NE 30,000 NE 8,500 15,000 25,000 28,500 15,0001VOCs, MTBE, & IPE analysis via Standard Method 6200B; reported in micrograms per liter (µg/L).2Compound not analyzed for3Non-Detect4Detected but below the reporting limit; therefore, results Is an estimated concentrationNot SampledGross Contamination Level (GCL)15A NCAC 2L .0202 (2L) StandardWSW-6Not SampledWSW-7
APPENDIX C
Laboratory Certificates of Analysis
and
Chain-of-Custody Documentation
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