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Home My WebLink AboutWS-6093_22446_CA_MRP_ 20120103CRA\NFOR ENVIRONMENTAL SERVICES January 3, 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: December 2011 Moody's Grocery 912 Old Highway 21 State Road, North Carolina 28676 IN: TF-22446 Contract Number: 4348-lC Dear Mr. Berger: Enclosed please find one copy of the Groundwater Monitoring Report for December 2011 completed by Crawford Environmental Services, lnc. 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 November 23,2011, and is being delivered to the NCDENR prior to January 10, 2012. 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, X~ Daniel J. Fisher Program Manager Enclosures MID-ATLANTIC REGION SOUTHEAST REGION SOUTHEAST REGION 15 CHURCH AVENUE, SW ROANOKE, VIRGINIA 24011 104 CORPORATE BLVD, SUITE 412 WEST COLUMBIA, SOUTH CAROLINA 29169 600 TOWNE CENTRE BLVD, SUITE 305 PINEVILLE, NORTH CAROLINA 28134 OFFICE 540 343.6256 OFFICE 803 708.0079 OFFICE 704889.0178 FAX 540 343.6259 FAX 803 708.8137 FAX 704 889.0179 ccra wford@crawfordenvironmental.com dobrien@crawfordenvironmental.com abaioni@crawfordenvironmental.com CRA\NFORD E NVIRONMENTAL S E RVICES GROUNDW ATER MONITORING REPORT: Prepared By: /1 ~ "1M '-Ii '. ' Ir1 [14« i\, I I. u{t( D)'L{ Angela M. Baioni Project Manager MID-ATLANTIC REGION 15 CHURCH AVENUE, SW ROANOKE, VIRGINIA 24011 OFFICE 540 343.6256 FAX 540 343.6259 ccrawford @crawforden vironmental.com December 2011 Moody's Grocery 912 Old Highway 21 State Road, North Carolina 28676 Incident Number 22446 Submitted To: Mr. Herbert Berger, Hydrogeologist North Carolina Depaltment of Environment and Natural Resources DWMfUST Section 1637 Mail Service Center Raleigh, North Carolina 27699-1637 Prepared For: State Lead Contract North Carolina Depaltment of Environment and Natural Resources DWM/UST Section January 3, 2012 CES Job Number: 16.017 Reviewed By: ZF~ Daniel J. Fisher Program Manager SOUTHEAST REGION 104 CORPORATE BLVD, SUITE 412 WEST COLUMBIA, SOUTH CAROLlNA 29169 OFFICE 803 708.0079 FAX 803708.8137 dobrien@crawfordenvironmental.com ~P1r~ved lliLf· Charles F. Crawfo d President SOUTHEAST REGION 600 TOWNE CENTRE BLVD, SUITE 305 PINEVILLE, NORTH CAROLINA 28134 OFFICE 704 889.0178 FAX 704 889.0179 abaion i @crawfordenvironmental.com TABLE OF CONTENTS SIGNATURE/CERTIFICATION PAGE. ...................................... .. .. ...................................................... ii EXECUTIVE SUMMARY ....................................................................................................................... iii 1.0 INTRODUCTION .......................................................................................................................... 1 2.0 SITE ASSESSMENT ........................................................................................... ........................... I 2.1 Site Description ................................................................................................................... 1 2.2 Site History .......................................................................................................................... 4 2.3 Topography ....................................................................................................................... ..5 2.4 Local Geology .....................................................................................................................5 2.5 Receptor Survey ..................................................................................................................6 2.6 Hydrogeology ...................................................................................................................... 8 3.0 RISK ASSESSMENT ................................................................................................................... 10 3. I Identification of Receptors ................................................................................................ 10 3.1.1 On-Site Receptors ................................................................................................. 10 3.1 .2 Off-S ite Receptors ................................................................................................ 1 I 3.1.3 Identification of Exposure Pathways .................................................................... II 3.1.3.1 Inhalation ..... .... ................................................................ ....................... 11 3. 1.3.2 Ingestion .................................................................................................. II 3.1.3.3 Dermal Contact ........................................................................................ 1 I 4.0 GROUNDW ATER MONITORING REPORT SUMMARy ................................................... 1I Tables Table i. Summary ofPhysical Properties ofGasoline ............................................. .......... I Table 2. Summary ofPhysical Properties ofKerosene .................................................... .4 Table 3. Potential Receptor information ............................................................................ 6 Table 4. Summary ofGroundwater Elevation Data ........................................................... 8 Table 5. Summary ofCalculated Purge Volumes ............................................................. II Figures Figure I. Site Location Map ................................................................................................ 2 Figure 2. Site Plan ............................................................................................................... 3 Figure 3. Potential Receptor Map ... ............................................................. ........................ 7 Figure 4. Potentiometric Surface Map (J 2141I i) ................................................................. 9 Appendices Appendix A. Photo-Documentation Appendix B. Groundwater Quality Data Appendix C. Laboratory Certificates ofAnalysis and Chain-ofCustody Documentation SIGNATURE/CERTIFICATION PAGE Prepared By: Name: Angela M. Baioni, Project Manager Signature: Reviewed By: Name: H. Dee O'Brien, P.G. -Division Manager Signature: Name: Signature: Company: Charles F. Crawford III -President Crawford Environmental Services, Inc. 15 Church Avenue, SW Roanoke, Virginia 24011 (540) 343-6256 [phone] (540) 343-6259 [facsimile] 11 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 November 23, 2011, as part of the State Lead Contract, is being delivered to the NCDENR Raleigh, North Carolina office prior to January 10, 2012, the regulatory deadline for submittal. 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. A summary of the physical properties of gasoline and kerosene, the petroleum fuels of concern at the site, are presented in Tables 1 and 2, respectively. Photo-documentation is included as Appendix A. Table 1. Summary of Physical Properties of Gasoline Composition: Complex combination of hydrocarbons (C-4 through C-12). Benzene content typically from 0.5% to 2.5%. May contain up to 10% of various oxygenated hydrocarbons, such as aliphatic alcohols and ethers. Specific Gravity (H2O = 1): 0.72 - 0.76 Percent Volatile by Volume: 100% Evaporation Rate: 10-11 Vapor Density: (air = 1) Approximately 3.5 Toxicity Data: A poison by inhalation. Repeated or prolonged dermal contact causes dermatitis, can cause blistering. Inhalation causes respiratory depression. Aspiration can cause severe pneumonitis. Can cause hyperemia of the conjunctiva and other disturbances of the eyes. Vapor Pressure: 7.0 to 14.5 psi (RVP) Flashpoint: -40o F Viscosity: 0.37 - 0.44 centipoise @ 60o F Solubility in Water: Negligible Appearance and Odor: Clear liquid, aromatic hydrocarbon odor. Boiling Point: 100 to 425 oF (approx) Source: Material Safety Data Sheet for Gasoline. 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: December 2011 GMR Latitude: 36o 20’ 23.23” N Longitude: 81o 53’ 26.26” W Client: NCDENR CES Job #: 16.017 Date: January 2, 2011 SITE SITE REVSite PlanMoody's Grocery912 Old Highway 21State Road, North Carolina 28676Figure TitleDRAWING NUMBERBYDATEREVGroundwaterMonitoring Report600 Towne Centre Blvd. Suite 305Pineville, North Carolina 28134704-889-0178704-889-0179 (fax)Figure 2WNSELEGENDOld 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 sphalt D riv e wa yGrassy AreaGrassy AreaGrassy AreaGrassy AreaGrassy Area 4 Table 2. Summary of Physical Properties of Kerosene Composition: Kerosene is a complex mixture of hydrocarbons from a variety of chemical processes blended to meet standardized product specifications. Composition varies greatly and includes C-9 through C-16 hydrocarbons with a boiling range of about 160-300 degrees Celsius. Specific Gravity (H2O = 1): 0.82 - 0.85 Percent Volatile by Volume: Not Analyzed Evaporation Rate: Not Analyzed Vapor Density: (air = 1) Approximately 4.5 Toxicity Data: The major effect of exposure to this product is headache, drowsiness, irritation of the eyes and nose, and lungs. Target organs include the respiratory system, nervous system, and mucous membranes. Vapor Pressure: > 8 mm Hg @ 38oC Flashpoint: >100o F Viscosity: 1.0-1.9 cSt @ 40o C Solubility in Water: Insoluble Appearance and Odor: Colorless to pale straw, or red oily liquid with characteristic odor. Boiling Point: 280 to 574 oF (approx) Source: Material Safety Data Sheet for Kerosene. 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. 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. 5 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. 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. 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. 6 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 3 is a summary of the potential receptors including property owner/occupant address and water usage corresponding to the locations presented on Figure 3. Table 3. Potential Receptor Information 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: December 2011 GMR Client: NCDENR CES Job #: 16.017 Date: December 30, 2011 WSW-2 WSW-4 WSW-6 WSW-3 SITE WSW-5 WSW-1 8 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 December 4, 2011. CES collected groundwater samples from four monitoring wells (MW-1, MW-2, MW-3, and MW-4). CES also collected a groundwater sample from the potable supply well serving the Shaw residence (WSW-5). CES was unable to contact the property owners of WSW-1 (Moody’s Grocery), WSW-2 (Dwight Moody) and WSW-6 (Don Moody), therefore groundwater samples were 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 December 4, 2011. Table 4. Groundwater Elevation Data 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 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 MW-3 1,329.84 52.0 3/9/2010 42.58 1,272.58 12/4/2011 43.37 1,286.47 MW-4 1,320.36 45.0 3/9/2010 35.12 1,285.24 12/4/2011 36.57 1,283.79 Elevations measured by CES on December 4, 2011, relative to arbitrary site datum of 1,330.00 feet. REVPotentiometric Surface Map (12/04/11)Moody's Grocery912 Old Highway 21State Road, North Carolina 28676Figure TitleDRAWING NUMBERBYDATEREVGroundwaterMonitoring Report600 Towne Centre Blvd. Suite 305Pineville, North Carolina 28134704-889-0178704-889-0179 (fax)Figure 4WNSELEGENDOld Highway 21IN 22446 MW-21,286.64'123456Moody's GroceryEstimated Drainfield Location MW-11,286.45' MW-31,286.47' MW-41,283.79'Fmr. Kerosene Tank BasinFmr. Unknown Tank BasinMonitoring WellFmr. Dispensing AreaFmr. Gasoline Tank Basin1234Fmr. Gasoline Tank Basin5Fmr. Gasoline Tank Basin6Moody ResidenceMining Ridge Church RoadA sphalt D riv e wa yGrassy AreaGrassy AreaGrassy AreaGrassy Area1,286.00'1,285.00'1,284.00'Grassy AreaEstimated Groundwater Flow Direction 10 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 and 1,2- dibromoethane (EDB) via Standard Method SM 504.1. 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 5. A summary of the historic and current groundwater quality data is presented in Appendix B. Chain-of-custody documentation and the laboratory Certificates of Analyses are included as Appendix C. Table 5. Summary of Calculated Purge Volumes 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 12/4/2011 NA 43.55 NA 60.0 16.45 2.0 0.163 8.04 MW-2 12/4/2011 NA 44.01 NA 60.0 15.99 2.0 0.163 7.82 MW-3 12/4/2011 NA 43.37 NA 52.0 8.63 2.0 0.163 4.22 MW-4 12/4/2011 NA 36.57 NA 45.0 8.43 2.0 0.163 4.12 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. CES was unable to contact the property owners of WSW-1, therefore a sample was not collected. The subject site maintains a full basement that could serve as a potential receptor to the migration of vapor-phase petroleum constituents. 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 sample collected from the Shaw residence (WSW-5) confirmed the absence of petroleum impacts. 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. The presence of dissolved-phase concentrations in excess of 2L Groundwater Standards in MW-1 and MW-2, in addition to the historical impact observed at WSW-2 and WSW-6, warrant further characterization and assessment activities. CES recommends the installation of additional monitoring points between the former gasoline tank basin and WSW-2 and WSW-6 to define the lateral extent of dissolved-phase impacts. Additional data will be used to calibrate fate and transport estimates and ultimately to assess the potential for future off-site impact. Subsequent to the collection of additional data, the appropriate course of action for the subject property will be determined. Should corrective action be warranted, CES will outline the proposed remedial strategy to be implemented. This report, prepared in accordance with NCDENR correspondence dated November 23, 2011, is being delivered to Mr. Herbert Berger of the Raleigh, North Carolina NCDENR office. APPENDIX A Photo-Documentation Groundwater Monitoring Report Moody’s Grocery 912 Old Highway 21 State Road, NC 28676 Page 1 Moody’s Grocery #1 Site building APPENDIX B Groundwater Quality Data Table 6.Groundwater Quality DataWell Identification Sample DateBenzene1TolueneEthylbenzeneXylenes (Total)MTBEIPEEDB2NaphthaleneAcetonen-ButylbenzeneChlorobenzeneChloroethaneChloroform1,4-Dichlorobenzene1,2-Dichloroethane1,2-DichloropropaneMethyl Butyl KetoneMethyl Ethyl KetoneMethyl Isobutyl KetoneIsopropylbenzene4-Isopropyltoluene4-Methyl-2-pentanonen-Propylbenzenep-Isopropyltoluenesec-Butylbenzenetert-ButylbenzeneStyrene1,3,5-Trimethylbenzene1,2,4-TrimethylbenzeneDimethylphthalateLead12/4/2002400 730120740 47 170NA324NA NA NA NA 3.4 NA31NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA 64/15/2004270 73076 41037 130NAND4NA NA NA NA ND NA ND NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA11/7/2005121138 42.1 22922.764.5 ND NA NA NA ND ND ND ND5.14NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA5/2/2007156156 20.4 148 7.76 64.90.8205.59 ND 0.570 ND ND ND ND11.5ND ND ND ND 0.990 ND ND 1.39 ND ND ND ND 9.16 19.4 NA NA9/24/2008184157 17.7 113 3.7069.8 1.52ND ND ND ND ND ND ND17.3ND ND ND ND 0.860 ND ND 1.35 ND ND ND ND 5.89 14.4 NA NA3/9/2010300150 26 177 1781 2.3 7.83.4 J5ND ND ND ND ND11ND ND ND ND 1.9 ND ND 1.6 1.2 0.69 0.61 ND 11 23 NA NA12/4/20111,000500 140840 22 170 0.33 35ND ND ND 3.3 ND ND44ND 26 ND 9.6 9.6 3.6 NA 11 NA 0.50 0.67 2.3 44 100 NA NA12/4/20024.222 6.6 26 ND 1.4 NA 2.1 NA NA NA NA ND NA ND NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA ND4/15/2004 ND ND ND 5.5 3.3200NA 7.4 NA NA NA NA ND NA 45 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA11/7/200514.73.90 8.24 11.1 ND175ND NA NA NA ND ND ND ND 25.8 ND NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA5/2/2007 ND ND ND ND 0.510 29.9 ND ND ND ND ND ND ND ND 4.46 ND ND ND ND ND ND ND ND ND ND ND ND ND ND NA NA9/24/2008 ND ND ND ND ND 22.4 ND ND ND ND ND ND ND ND 1.10 ND ND ND ND ND ND ND ND ND ND ND ND ND ND NA NA3/9/2010 ND ND ND ND ND 4.2 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND NA NA12/4/2011 ND ND ND ND 0.75 J 9.1 ND ND ND ND ND ND ND ND1.1ND ND ND ND ND ND NA ND NA ND ND ND ND ND NA 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 ND ND ND ND ND ND 3.3 J6212/4/2011 ND ND ND ND ND ND ND ND ND ND ND ND ND ND 0.51 ND ND ND ND ND ND NA ND NA ND ND ND ND ND NA NA3/9/2010 ND ND ND ND ND ND ND ND 1.4 J ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 5.8 J ND12/4/2011 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND NA ND NA ND ND ND ND ND NA NA10/4/2001 ND ND ND ND ND ND ND ND NA NA NA NA NA NA ND NA NA NA NA NA NA NA NA NA NA NA NA ND ND NA NA9/12/2002 ND ND ND ND ND 2 NA NA NA NA ND ND ND ND 1.2 NA NA NA NA NA NA NA NA NA NA NA NA ND ND NA NA9/9/2004 ND ND ND ND NA 1.4 ND ND NA NA NA NA NA NA ND ND ND ND ND ND ND ND ND NA NA NA NA ND ND NA NA11/7/2005 ND ND ND 1.35 ND ND ND 0.860 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 ND0.690ND 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 ND ND ND ND ND NA NA12/4/20119/12/2002150ND ND ND64 360NA NA NA NA270ND 1216 6NA NA NA NA NA NA NA NA NA NA NA NA ND ND NA NA11/7/20051.02ND ND ND 1.71 3.88 ND ND ND ND ND ND ND 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 ND ND ND4.65ND ND ND ND 0.500 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 ND ND ND ND ND ND ND3/9/201012/4/201110/4/2001 ND ND ND ND ND ND ND NA NA ND NA NA NA NA ND NA NA NA NA NA NA NA NA NA NA NA NA ND ND NA NA9/12/2002 ND ND ND ND ND ND NA ND NA NA ND ND ND ND ND NA NA NA NA NA NA NA NA NA NA NA NA ND ND NA NA9/9/2004 ND ND ND ND NA ND ND ND NA NA NA NA NA NA ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND NA 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 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 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 ND ND ND ND ND NA 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 ND ND ND ND ND NA 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 ND ND ND ND ND NA NA3/9/2010 ND ND ND ND ND ND ND ND 1.4 J ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND NA NA10/4/2001 ND ND ND ND ND ND ND ND ND ND NA NA NA NA ND NA NA NA NA NA NA NA NA NA NA NA NA ND ND NA NA9/12/2002 ND ND ND ND ND NA NA NA NA NA ND ND ND ND ND NA NA NA NA NA NA NA NA NA NA NA NA ND ND NA NA9/9/2004 ND ND ND ND NA ND ND ND NA NA NA NA NA NA ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND NA 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 ND ND ND ND ND NA 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 ND ND ND ND ND NA NA3/9/2010 ND ND ND ND ND 0.94 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND NA NA12/4/2011 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND NA ND NA ND ND ND ND ND NA NA10/4/200132046 25 278 ND 25 ND ND ND ND NA NA NA NA1NA NA NA NA NA NA NA NA NA NA NA NA 14530NA NA9/12/200225087 19 228 ND 27 NA NA NA NA ND ND ND ND6.8NA NA NA NA NA NA NA NA NA NA NA NA 22 48 NA 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 ND ND ND ND ND NA 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 ND ND ND ND ND NA NA3/9/201021026 13 116 ND 20 ND 3.9 68 0.97 J ND ND 6.8 ND6.9 1.2ND 27 ND 1.4 ND 14 1.2 ND 0.62 ND ND 11 22 NA NA12/4/20119/12/2002 ND ND ND ND ND ND NA NA NA NA ND ND ND ND ND ND NA NA NA NA NA NA NA NA NA NA NA ND ND NA NA9/9/2004 ND ND ND ND NA ND ND ND NA NA NA NA NA NA NA ND ND ND ND ND ND ND ND ND ND ND ND ND ND NA NA1 600 600 500 20 70 0.02 6 6,000 70 50 3,000 70 6 0.4 0.6 NE 4,000 NE 70 NE NE 70 NE 70 70 100 400 400 NE 155,000 260,000 84,500 85,500 20,000 70,000 50 6,000 6,000,000 6,900 50,000 NE 70,000 6,000 400 600 NE 4,000,000 NE 25,000 NE NE 30,000 NE 8,500 15,000 100,000 25,000 28,500 NE 15,0001VOCs, MTBE, & IPE analysis via Standard Method 6200B; reported in micrograms per liter (µg/L).2EDB analysis via Standard Method 504.1; reported in micrograms per liter (µg/L).4Compound not analyzed for4Non-Detect5Detected but below the reporting limit; therefore, results Is an estimated concentrationWSW-4Gross Contamination Level (GCL)15A NCAC 2L .0202 (2L) StandardWSW-2Not SampledNot SampledWSW-3WSW-5WSW-6Not SampledWSW-7MW-1MW-2MW-3MW-4WSW-1Not Sampled APPENDIX C Laboratory Certificates of Analysis and Chain-of-Custody Documentation Page 1 of 20 Page 2 of 20 Page 3 of 20 Page 4 of 20 Page 5 of 20 Page 6 of 20 Page 7 of 20 Page 8 of 20 Page 9 of 20 Page 10 of 20 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