The URL can be used to link to this page

Home My WebLink AboutAS-3303_28466_CA_CAI_20180628_Performance 2 CORRECTIVE ACTION PERFORMANCE REPORT Former Tilley’s Superette 1710 Union Grove Road Lenoir, Caldwell County, North Carolina 28645 Facility ID No. 0-007680 NCDEQ Incident No. 28466 Risk Classification: High (H155D) ATC Project No. CARTILL June 28, 2018 Corrective Action Performance Report Former Tilley’s Superette 1710 Union Grove Road Lenoir, Caldwell County, North Carolina 28645 Facility ID No. 0-007680 NCDEQ Incident No. 28466 Risk Classification: High (H155D) ATC Project No. CARTILL Prepared By: Submitted To: Division of Waste Management - UST Section 2090 US Highway 70 Swannanoa, North Carolina 28778 ___________________________ Submitted By: Michael D. Shaw, P.G. NC Licensed Geologist #1338 ATC Associates of North Carolina, P.C. 7606 Whitehall Executive Center Drive Suite 800 Charlotte, North Carolina 28273 Phone: (704) 529-3200 Fax: (704) 529-3272 On Behalf Of: Cary Oil Company 110 Mackenan Drive, Suite 300 Cary, North Carolina 27511 Phone: (919) 462-3194 June 28, 2018 Site Identification: Date of Report: 6/28/2018 Site Risk: High (H155D) Facility I.D.: 0-007680 UST Incident Number (if known): 28466 Site Name: Former Tilley’s Superette Street Address: 1710 Union Grove Road City/Town: Lenoir Zip Code: 28645 County: Caldwell Description of Geographical Data Point (e.g., diesel fill port): Former Dispenser Island Location Method (GPS, topographical map, other): Google Earth Latitude (decimal degrees): 35.831567° N Longitude (decimal degrees): 81.553784° W Information about Contacts Associated with the Leaking UST System: UST Owner: Cary Oil Company Address: 110 Mackenan Drive, Suite 300, Cary, NC 27511 Phone: (919) 462-1100 Property Owner: Harold J and Ora Belle Tilley (deceased) c/o Warren H. Tilley Address: 2083 Baton School Road, Lenoir, NC 28645 Phone: (828) 728-7220 Consultant/Contractor: ATC Associates of North Carolina, P.C. Address: 7606 Whitehall Executive Center Dr., Charlotte, NC 28273 Phone: (704) 529-3200 Analytical Laboratory: SGS North America, Inc. State Certification No.: 573 Address: 4405 Vineland Road, Suite C-15, Orlando, FL 32811 Phone: (407) 425-6700 Information about Release: Date Discovered: October 6, 2006 Estimated Quantity of Release: Unknown Cause of Release: Unknown Source of Release (Dispenser/Piping/UST): Leaking UST System Sizes and contents of UST system(s) from which the release occurred: Tank ID # Tank Capacity Last Contents Installation Date Removal Date 1 6,000 Gasoline 1971 October 6, 2006 2 6,000 Gasoline 1971 October 6, 2006 3 4,000 Gasoline 1971 October 6, 2006 4 1,000 Gasoline 1986 October 6, 2006 5 2,000 Diesel 1986 October 6, 2006 6 1,000 Kerosene 1990 October 6, 2006 7606 Whitehall Executive Center Drive, Suite 800 Charlotte, NC 28273 Tel: 704-529-3200 Fax: 704-529-3272 www.atcgroupservices.com N.C. Engineering License No. C-1598 June 28, 2018 Mr. Dan Murphy North Carolina Department of Environmental Quality Asheville Regional Office Division of Waste Management - UST Section 2090 US Highway 70 Swannanoa, North Carolina 28778 RE: Corrective Action Performance Report Former Tilley’s Superette 1710 Union Grove Road Lenoir, Caldwell County, North Carolina 28645 Facility ID No. 0-007680 NCDEQ Incident No. 28466 Risk Classification: High (H155D) ATC Project No. CARTILL Dear Mr. Murphy: ATC Associates of North Carolina, P.C., on behalf of Cary Oil Company, is submitting the enclosed Corrective Action Performance Report for the Former Tilley’s Superette site. This report includes information pertaining to the operation and maintenance of the air sparge and soil vapor extraction systems from February through April 2018. If you have any questions or require additional information, please contact us at (704) 529-3200. Sincerely, ATC Associates of North Carolina, P.C. Michael D. Shaw, P.G. Senior Program Manager cc: Mr. Glenn Petti – Cary Oil Company Former Tilley’s Superette June 28, 2018 Corrective Action Performance Report Page 1 TABLE OF CONTENTS 1.0 EXECUTIVE SUMMARY ............................................................................................................ 1 2.0 CAP IMPLEMENTATION ............................................................................................................ 2 3.0 GROUNDWATER REMEDIATION ............................................................................................ 2 4.0 CONCLUSIONS AND RECOMMENDATIONS ......................................................................... 4 5.0 REPORT LIMITATIONS .............................................................................................................. 5 TABLES Table 1 Site History Table 2 Public and Private Water Supply Well and Other Receptor Information Table 3 Historical Groundwater Analytical Summary Table 4 Free Product Recovery Information Table 5 Depth to Water and Dissolved Oxygen Readings Table 6 SVE System Cumulative Recovery FIGURES Figure 1 USGS Topographic Map Figure 2 Site Map Figure 3 Remedial System Design Former Tilley’s Superette June 28, 2018 Corrective Action Performance Report Page 1 1.0 EXECUTIVE SUMMARY Cary Oil Company (Cary Oil) retained ATC Associates of North Carolina, P.C. (ATC) to prepare a Corrective Action Performance Report for the project site located at 1710 Union Grove Road in Lenoir, Caldwell County, North Carolina. Figure 1 shows the site and vicinity on part of a United States Geological Survey (USGS) site topographic map. A map showing site details is provided as Figure 2. This report documents three months of remedial system operation and maintenance. Groundwater impact at the site has historically been identified at concentrations exceeding Gross Contamination Levels (GCLs). Generally decreasing trends have been observed over time. However, according to recent groundwater analytical results, contaminant concentrations appear to be stabilizing or decreasing over time. Petroleum hydrocarbons were detected above the associated 15A NCAC 2L.0202 standards (2L standards) in five of the eight sampled site monitoring wells Benzene was reported in well MW-2 above its respective 2L standard, and ethylene dibromide (EDB) was reported in wells MW-1 and MW-2 at concentrations above their respective GCLs in February 2018. Free product has historically been identified at the site with a maximum thickness of 0.78 feet in well MW-2. Free product was not identified in site monitoring wells in February 2018, but a sheen was observed in water in well MW-2. Free product recovery efforts in the form of Aggressive Fluid/Vapor Recovery (AFVR) and Mobile Multi- Phase Extraction (MMPE) events, conducted between 2008 and 2012, recovered approximately 399.98 gallons of petroleum as vapor, 36 gallons of liquid product, and 15,622 gallons of petroleum-contact water. As outlined in the August 2009 Corrective Action Plan (CAP), air sparge and soil vapor extraction (AS/SVE) technologies were the chosen corrective actions for the site based on site conditions and technical considerations. The AS/SVE wells were installed from November 14 to November 22, 2011. The system components were delivered and installed from December 2011 to March 2012. The system was started on April 24, 2012. Based on vicinity water supply wells, historical free product, and groundwater impact in on-site wells, the risk classification for the site has been designated as “High” and ranked H155D by the North Carolina Department of Environmental Quality (NCDEQ). Therefore, groundwater contamination must be remediated to concentrations which are equal to or less than the associated 2L standards. Former Tilley’s Superette June 28, 2018 Corrective Action Performance Report Page 2 2.0 CAP IMPLEMENTATION Based on results of pilot testing, ATC found that AS/SVE technologies appeared to be the most feasible and cost effective remedial options for reducing groundwater contaminant concentrations associated with the site (Incident No. 28466). The AS/SVE wells were installed from November 14 to November 22, 2011. The air sparge wells were constructed of 2-inch diameter schedule 40 PVC piping with 2.5-feet of No. 10 slot screen. Air sparge wells AS-1 through AS-13 were installed to a depth of 75 feet below land surface (bls). Air sparge wells AS-14 through AS-16 were installed to a depth of 90 feet bls in an effort to reduce dissolved contaminant concentrations and increase dissolved oxygen in the area of type III well MW-16D. Vapor extraction wells VE-5 through VE-14 were constructed of 4-inch diameter schedule 40 PVC piping and screened with No. 10 slot (0.010-inch) screen from 25 to 45 feet bls. Vapor extraction wells VE-1 through VE-4 were installed on March 10, 2009, for the pilot study and were constructed of 2-inch diameter schedule 40 PVC piping and screened with No. 10 slot screen from 25 to 45 feet bls. The air sparge system consists of 16 air sparge wells, a rotary claw air compressor, and schedule 80 PVC piping for transferring compressed air from the remediation system to the air sparge wells. The vapor extraction system consists of 14 vapor extraction wells, a regenerative vacuum blower, and schedule 40 PVC piping for transferring extracted vapors from the vapor extraction wells to the remediation system. A system design drawing is included as Figure 3. 2.0 GROUNDWATER REMEDIATION Weekly system maintenance visits were conducted during the first month of system operation and were then reduced to bi-weekly visits in June 2012. Visits were further reduced to a monthly basis in February 2016. Efforts are made to combine site visits with visits conducted at another Cary Oil site in the vicinity, Cajah’s Mountain Superette. Remote telemetry is in place at the site but is not currently being utilized. The mobile 2G network in use at the site was shut down by AT&T in January 2017 and the migration to 3G did not appear feasible due to costs and potentially poor service in the rural site area. The sparge system was not operational between approximately September 2014 and May 2016. Following assessment by an equipment supply and repair company which identified a failing transmission, the compressor was repaired and re-installed at the site. However, during a site visit in November 2015, it was observed that the system had been vandalized. Bullet holes were noted in the system trailer and the air sparge Former Tilley’s Superette June 28, 2018 Corrective Action Performance Report Page 3 heat exchanger. A replacement heat exchanger was installed at the site in April 2016. Additionally, electrical wires associated with the compressor were damaged and needed replacement. The damage likely occurred when the compressor’s transmission was initially failing. Other minor system downtime has historically been associated with power outages due to storms or high water levels in the air/water separator tank. Note a potential SVE system limitation is the four source area SVE wells (VE-1 through VE-4) were installed for pilot testing purposes as 2” diameter wells. Continued groundwater impact in this area may be better remediated by larger diameter SVE wells. System operation and maintenance was conducted once per month from February through April 2018 to check system components and perform routine maintenance. System run-time was approximately 100% from February through April 2018. Vacuum pressures for each well point at the SVE manifold were set at approximately 38 inches of water. Pressure readings for each well point at the AS manifold were set at approximately seven pounds per square inch (psi). During this reporting period, wells SVE-6 through SV-8 and AS-4 through AS-10 were off to increase vacuum and sparge influence in areas of remaining impact. SVE influent air samples are collected on a quarterly basis to assess the efficiency of the SVE system and assist with system optimization efforts. An SVE influent air sample was not collected during this testing period. A. Table 6 shows SVE cumulative recovery calculations based on system influent sampling data. Based on laboratory analytical results from quarterly influent air sampling, approximately 3,442 pounds of total BTEX have been recovered by the SVE system since startup. The system influent total BTEX concentration upon initial startup and sampling in June 2012 was 835.9 mg/m3. The system influent total BTEX concentration during the December 2017 sampling was 11.4 mg/m3. Based on recent dissolved oxygen readings provided in Table 5, the air sparge system appears to be effective in providing oxygen to the aquifer. Shallow wells MW-2 and MW-9 and deep well MW-16D indicated the lowest concentrations of oxygen, but concentrations are above anoxic conditions. Free product has historically been identified at the site with a maximum thickness of 0.78 feet in well MW-2. Following multiple AFVR and MMPE events, the site monitoring wells have not indicated the presence of free product since August 2012. However, a sheen was observed in groundwater from wells MW-2 during February 2018 monitoring well gauging activities. Groundwater contamination is generally located along the south side of the subject site in the vicinity of, and downgradient from, the former UST system. Contaminant concentrations in groundwater have generally decreased over time. However, according to recent groundwater analytical results, contaminant concentration rebounding appears to be Former Tilley’s Superette June 28, 2018 Corrective Action Performance Report Page 4 occurring. Petroleum hydrocarbons were detected above the associated 2L standards in five of the eight sampled site monitoring wells. Benzene was reported in well MW-2 above its respective 2L standard, and ethylene dibromide (EDB) was reported in wells MW-1 and MW-2 at concentrations above their respective GCLs in February 2018. 4.0 CONCLUSIONS AND RECOMMENDATIONS The AS/SVE system was started at the site on April 24, 2012. Recent groundwater analytical results indicate contaminant concentration stabilizing or decreasing. Free product was not observed in gauged wells in February 2018 but a sheen was observed in well MW-2. Based on these results, it appears an unidentified continued source of groundwater impact may exist. ATC has previously recommended system enhancements to potentially increase efficiency, such as replacement of the source area 2” SVE wells with 4” SVE wells and a sparge test to identify if using shallower sparge wells is an option for remediating shallow aquifer groundwater. The trust fund will not cover the costs for these proposed system enhancements. Alternative options include:  installation of 4” diameter recovery wells for AFVR events. The AFVR events could be conducted with sparge enhancement using impacted monitoring wells (MW-1 through MW-3, depending on recovery well locations);  if recovery events are conducted, a laser-induced fluorescence (LIF) study is first recommended to identify potential areas of remaining subsurface free product which would help identify appropriate recovery well locations. Additionally, the AS/SVE system should be shut down for approximately one week to allow water levels to reach equilibrium. The SVE wells should then be gauged for potential free product that may exist but has not been identified during regular groundwater monitoring events;  pulsing the AS/SVE system on and off over time or between zones to enhance recovery in specific areas;  installation of oxygen releasing socks or an in-situ oxygen curtain in areas of continued impact to aid in bioremediation. Potential adjustments to the existing system will be evaluated (e.g. vacuum or flow adjustments) to enhance recovery. Influent air samples are recommended to be collected from the SVE system on a Former Tilley’s Superette June 28, 2018 Corrective Action Performance Report Page 5 quarterly basis during site visits. Groundwater samples are recommended to be collected from site monitoring wells on a semi-annual basis. 5.0 REPORT LIMITATIONS This investigation is intended to be a non-biased assessment of on-site environmental conditions proximate to the location of the former and/or current UST system. Subsurface investigative and remedial methodologies were performed in general accordance with applicable state and federal regulatory requirements. The information presented in this report is based upon site-specific observations, generally accepted geological and environmental consulting practices, and analytical results for environmental samples collected at the time of the field investigation was performed. The data presented in this report are believed to represent subsurface conditions at the facility; however, data may not be completely representative of subsurface conditions at every location. ATC assumes no liability arising from environmental impact to, or from, the site, regardless of the date of impact occurrence or findings. 1 Enter the date the performance report was due. Click or tap to enter a date. Will this report be submitted after the established due date? N/A YES NO 2 Was any required information from the above template missing from this report? YES NO IF the answer to question #1 or# 2 is “YES”, please provide additional information in this cell to explain what was missing and why. 3 Has the operation of the installed active remediation system experienced any complications during this reporting period? (i.e., answer ‘NO’ if the system has been operational except for normal maintenance events, with no unscheduled shutdowns.) YES NO 4 Have all issues that were responsible for causing these complications been resolved? YES NO IF the answer to question #3 or #4 is “YES”, please provide additional information in this cell describing the issue(s) and any troubleshooting and/or repair steps that have been taken (or are planned) to resolve the issue(s). 5 Will any of the proposed cleanup milestones under the schedule approved in the Corrective Action Plan not be met? (within a reasonable margin of error) N/A YES NO IF the answer to question #5 is “NO”, skip to the certification under #8 below. IF the answer to question #5 is “YES”, please generally describe in this cell the possible reason(s) and outline proposed remedies. (This should be described in more detail in the report text above.) 6 Does any known or suspected source zone soil contamination or free product remain outside of the remediation system area of influence that could be inhibiting cleanup? YES NO 7 Has there been an unexpected increase in contaminant mass sufficient to suggest a potential new release from a separate onsite or offsite source? YES NO IF the answer to either question #6 or #7 is “YES”, generally describe in this cell any actions recommended to further assess or clean up this known or suspected source. (This should be described in more detail in the report text above.) additional assessment in the form of SVE well gauging or laser- induced fluorescence and/or additional remedial efforts in the form of groundwater recovery, oxygenation, or AS/SVE system adjustments are recommended as discussed in the text above 8 Certification: I, Michael D. Shaw, a Licensed Geologist for ATC Associates of North Carolina, P.C., do certify that the information contained in this report is correct and accurate to the best of my knowledge. ATC Associates of North Carolina, P.C., is licensed to practice geology/engineering in North Carolina. The certification numbers of the company or corporation are C-274/C-1598. TABLES Table 1 Site History Former Tilley's Superette 1710 Union Grove Road Lenoir, North Carolina Facility ID Number 0-007680 Incident Number 28466 Telephone Number (919) 462-3194 Incident Number 28466 State Zip Number 1 Gasoline None 6,000 Steel 96" x 16' FRP 1971 Removed 10/6/2006 Unknown 2 Gasoline None 6,000 Steel 96" x 16' FRP 1971 Removed 10/6/2006 Unknown 3 Gasoline None 4,000 Steel 64" x 24' FRP 1971 Removed 10/6/2006 Unknown 4 Gasoline None 1,000 Steel 48" x 10'9" FRP 1986 Removed 10/6/2006 Unknown 5 Diesel None 2,000 Steel 64" x 12' FRP 1986 Removed 10/6/2006 Unknown 6 Kerosene None 1,000 Steel 48" x 10'9" FRP 1990 Removed 10/6/2006 Unknown FRP - Fiberglass reinforced plastic 28466 Petroleum October 2006 Release identified during UST excavation Incident Number Material Released Date of Release Description of Release Current/Last Contents Previous Contents City Street Address N/A Construction Details N/A Tank Dimensions Description of Associated Piping and Pumps Date Tank Installed Capacity (gallons)Status of Tank Was Release Associated With UST System? UST ID Number City Zip 27511 State Cary NC Name of Other Responsible Party Dates of Release(s) (m/dd/yy) N/A N/A UST ID Number(s) Facility ID Number Street Address 110 Mackenan Drive, Suite 300 1, 2, 3, 4, 5, 6 0-007680 Name of Owner Dates of Ownership / Operation [(m/dd/yy) to (m/dd/yy) Cary Oil Company 4/1/05 to 10/5/06 (tanks removed) Table 2 Public and Private Water Supply Well and Other Receptor Information Former Tilley's Superette 1710 Union Grove Road Lenoir, North Carolina Facility ID Number 0-007680 Incident Number 28466 Harold J and Ora Belle Tilley (deceased) c/o Warren H. Tilley 2083 Baton School Rd, Lenoir, NC 28645 Barbara Woodruff 1920 Parkwood Drive, Lenoir, NC 28645 Ray Gene and Cynthia Tilley 1885 Parkwood Drive, Lenoir, NC 28645 Jimmy and Carol Shehan 1873 Parkwood Drive, Lenoir, NC Thomas and Leslie Williams 1679 Union Grove Road, Lenoir, NC 28645 Marvin and Judy Oliver 1667 Union Grove Road, Lenoir, NC 28645 Jacob and Virginia Spears 1696 Union Grove Road, Lenoir, NC 28645 Phillip Stuart 1935 Parkwood Drive, Lenoir, NC 28645 Richard and Brenda Blevins 2023 Craig Road, Lenoir, NC 28645Roger Kirk and Judith Melton144 Spring Street, Hudson, NC 28638 JB Myers Junior 2121 Union Grove Rd, Lenoir, NC 28645 Richard L and Allene Bryant 3982 Horace Bolick Rd, Lenoir, NC 28645 Richard L and Allene Bryant 3982 Horace Bolick Rd, Lenoir, NC 28645 Nina and Robert Lambert 1781 Union Grove Rd, Lenoir, NC 28645 Warren Harold and Carolyn Tilley 2083 Baton School Rd, Lenoir, NC 28645 Linda Hamby Caudle 1905 Parkwood Drive, Lenoir, NC 28645 Larry and Carolyn Woodie 1910 Parkwood Drive, Lenoir, NC 28645 Guy and Kathryn Herman 1914 Parkwood Drive, Lenoir, NC 28645 Robert and Rebecca Lambert 1781 Union Grove Road, Lenoir, NC 28645PW-21 1762 Union Grove Road Not Available Inactive Unknown Unknown 1100 Downgradient Public water supplied by Baton Water; house vacant PW-20 1914 Parkwood Drive 828-728-9303 Inactive Unknown Unknown 500 Up/Sidegradient Public water supplied by Baton Water PW-19 1910 Parkwood Drive 828-728-4318 Inactive Unknown Unknown 510 Up/Sidegradient Public water supplied by Baton Water 750 Sidegradient Downgradient Inactive Unknown Unknown 400 Upgradient Inactive Unknown Unknown 700 Side/Downgradient Downgradient Downgradient Unknown Unknown 875 Sidegradient Inactive 800 60 Unknown 90 Unknown Active 415 Sidegradient Inactive Unknown Unknown 1175 Upgradient Unknown UpgradientInactive Unknown Unknown 200 Unknown Unknown Upgradient Inactive 60 Unknown 800 Upgradient Inactive UnknownUnknown 775 Unknown Unknown Unknown Unknown Active Unknown UnknownPW-15 Unknown PW-8* Not Available 3988 Horace Bolick Road 2023 Craig Road PW-6 Inactive828-728-7539 Not Available 828-728-7702 PW-1 1667 Union Grove Road Not Available Not Available Not Available Inactive Public water supplied by Baton Water PW-16 1686 Union Grove Road Public water supplied by Baton Water PW-17 1758 Union Grove Road Public water supplied by Baton Water PW-18 1905 Parkwood Drive 828-728-7220 Not Available Not Available Inactive Unknown Unknown 400 Upgradient Public water supplied by Baton Water; well used for irrigation Well Screen Interval Approx. distance from source area of release (ft) Up or Downgradient 1710 Union Grove Road (SUBJECT SITE) PW-7 1958 Parkwood Drive PW-5* PW-4 1898 Parkwood Drive 1885 Parkwood Drive PW-2 PW-3 Josh Young et al 1958 Parkwood Drive, Lenoir, NC 28645 Danny Joe and Faye Harrison 1898 Parkwood Drive, Lenoir, NC 28645 N/A54 Unknown 650 Upgradient 430 Sidegradient 40-60 Property Owner Contact Information Property Address Public water supplied by Baton Water; well pump removed 1696 Union Grove Road Owner indicates well is closed, no access and not in use; public water supplied by Baton WaterPW-9 1679 Union Grove Road Not Available Not Available Supply Well ID Well currently in use for drinking (well part of estate use (services 4 houses) 1873 Parkwood Drive Public water supplied by Baton Water Well installed in 1954. Reportedly, well damaged and not in use but planned to use for irrigation in the future; public water supplied by Baton Water. Public water supplied by Baton Water. No well observed 7/2/12. WSW form not returned. 1920 Parkwood Drive Comment Well installed in 1961; public water supplied by Baton Water Public water supplied by Baton Water; well pump removed Inactive Active On-site Unknown Unknown 500 Downgradient Phone Number Well Use Well Depth (ft bgs) 828-728-7220 828-728-4100 828-726-0302 52 Inactive Inactive Public water supplied by Baton Water. No well observed 7/2/12. WSW form returned stating no well on property. Public water supplied by Baton Water; well house appeared destroyed 7/2/12, well may be destroyed PW-14 3988 Horace Bolick Road Public water supplied by Baton Water; well used for irrigation PW-13*3997 Horace Bolick Road PW-12 2015 Craig Road Public water supplied by Baton Water; well installed in 1950s 1935 Parkwood DrivePW-10* PW-11 Public water supplied by Baton Water Public water supplied by Baton Water. No well observed 7/2/12. WSW form returned stating no well on property. 828-728-2517 828-758-5701 Inactive 1075 828-728-9384 350 Downgradient 1400 Inactive Page 1 of 2 Table 2 Public and Private Water Supply Well and Other Receptor Information Former Tilley's Superette 1710 Union Grove Road Lenoir, North Carolina Facility ID Number 0-007680 Incident Number 28466 Well Screen Interval Approx. distance from source area of release (ft) Up or DowngradientProperty Owner Contact Information Property AddressSupply Well ID CommentPhone Number Well Use Well Depth (ft bgs) Ruby McLean 1889 Parkwood Drive, Lenoir, NC 28645 Carl Story 3870 Angelic Way, Lenoir, NC 28645 Everette and Lillian Craig 2016 Craig Road, Lenoir, NC 28645 James Harrison 3882 Angelic Way, Lenoir, NC 28645 Rodney and Sandi Cannon 3970 Horace Bolick Rd, Lenoir, NC 28645 Modified as of 8/14/2012. No other receptors were identified within 1,500 feet of the site. * Well no longer exists. PW-26 3970 Horace Bolick Road Not Available Assumed Inactive Unknown Unknown 1100 Sidegradient Possible well observed; public water supplied by Baton Water PW-25 3882 Angelic Way Not Available Assumed Inactive Unknown Unknown 1190 Upgradient Possible well observed; public water supplied by Baton Water PW-24 2016 Craig Road Not Available Assumed Inactive Due to House Vacancy Unknown Unknown 975 Down/Sidegradient Well observed; house is vacant; water not supplied by Baton as of 8/14/12 PW-23 3870 Angelic Way Not Available Assumed Inactive Unknown Unknown 1350 Upgradient Possible well observed; public water supplied by Baton Water PW-22 1889 Parkwood Drive Not Available Assumed Inactive Unknown Unknown 650 Upgradient Possible well observed (circular concrete in ground); public water supplied by Baton Water Page 2 of 2 Table 6 Table 3 Historical Groundwater Analytical Summary Former Tilley's Superette 1710 Union Grove Road Lenoir, North Carolina Facility ID Number 0-007680 Incident Number: 28466 EPA METHOD 504.1 C 1 1 - C 2 2 A R O M A T I C S C 1 9 - C 3 6 A L I P H A T I C S C 9 - C 1 8 A L I P H A T I C S C 5 - C 8 A L I P H A T I C S C 9 - C 1 0 A R O M A T I C S C 9 - C 1 2 A L I P H A T I C S B E N Z E N E T O L U E N E E T H Y L B E N Z E N E T O T A L X Y L E N E S M T B E N A P H T H A L E N E I S O P R O P Y L E T H E R IS O P R O P Y L B E N Z E N E 1 , 2 - D I C H L O R O B E N Z E N E 1, 4 - D I C H L O R O B E N Z E N E BE N Z Y L A L C O H O L BE N Z O I C A C I D 2, 4 - D I M E T H Y L P H E N O L 3& 4 - M E T H Y L P H E N O L 1 - M E T H Y L N A P H T H A L E N E 2 - M E T H Y L N A P H T H A L E N E N A P H T H A L E N E PH E N O L BI S ( 2 - E T H Y L H E X Y L ) P H T H A L A T E IS O P R O P Y L B E N Z E N E E D B F E R R O U S I R O N N I T R A T E 9/19/2008 1,500 <200 3,200 50,000 3,000 11,000 50,000 11,200 <200 4,500 8,900 8,000 950 4,500 2,300 **230 NA NA NA NA <10 NA <5 NA 41 120 230 <5 5.4 NA 100 376 NA NA NA NA 4/14/2009 NA NA NA NA NA NA NA NA NA NA 17,000 19,000 1,600 8,100 6,500 **<500 5,500 NA NA NA *NA *NA *NA *NA *NA *NA <500 *NA *NA *NA NA NA <1.2 *NA *NA *NA 4/1/2010 NA NA NA NA NA NA NA NA NA NA 9,680 10,200 1,640 7,910 2,990 **544 1,570 NA NA NA NA NA NA NA NA NA 544 NA NA 67.1 NA NA NA NA NA NA 1/19/2011 980 <200 2,700 68,000 3,600 20,000 68,000 19,100 <200 4,580 16,000 20,000 2,400 12,400 4,700 **770 4,300 NA 500 470 NA NA <250 NA NA NA 770 <250 <250 NA 29 NA NA NA NA NA 2/14/2012 2,040 <95 1,810 86,400 10,100 21,500 86,400 13,210 <95 12,140 19,700 21,700 2,480 12,400 4,760 **610 4,000 NA <100 <100 314 <190 <21 <21 69.3 J 146 610 <9.5 <21 NA 232 NA NA NA NA NA 8/9/2012 4,190 <95 247 19,100 6,060 8,040 19,100 2,227 <95 10,250 5,710 7,010 817 6,200 4,830 **581 2,360 NA <50 <50 258 <190 <21 <21 85.6 J 168 581 <9.5 <21 NA 190 NA NA NA NA NA 2/14/2013 511 <109 <109 11,700 <2,500 11,000 11,700 11,000 <109 511 1,320 1,440 87.0 1,360 1,190 **434 538 NA <10.0 <10.0 <5.3 <52.6 <10.5 <10.5 Not Reported 57.1 434 <5.3 <5.3 NA 43.0 NA NA NA NA NA 8/14/2013 990 <100 106 27,300 <2,500 19,800 27,300 19,906 <100 990 8,170 6,100 1,380 7,260 1,470 **447 901 NA <5.0 <5.0 NA NA <100 NA NA NA 447 <50.0 <50.0 NA 67.8 NA NA NA NA NA 2/12/2014 4,780 <100 156 <5,000 <5,000 19,200 <5,000 19,356 <100 4,780 115 1,030 371 3,290 62.8 **1,930 <50.0 NA <50.0 <50.0 NA NA <500 NA NA NA 1,930 <250 <250 NA 16.0 NA NA NA NA NA 8/14/2014 10,800 <100 <100 36,900 <5,000 17,400 36,900 17,400 <100 10,800 4,580 7,260 629 3,830 2,690 2,200 2,020 NA <25.0 <25.0 NA NA NA NA NA NA NA NA NA NA 473 NA NA NA NA NA 2/18/2015 NA NA NA NA NA NA NA NA NA NA 7,690 19,000 2,000 10,410 1,490 1,090 1,450 59.8 <50.0 <50.0 NA NA NA NA NA NA NA NA NA NA 291 NA NA NA NA NA 8/19/2015 NA NA NA NA NA NA NA NA NA NA 9,950 23,900 2,210 12,370 2,700 1,530 2,460 <125 <125 <125 NA NA NA NA NA NA NA NA NA NA 847 NA NA NA NA NA 2/18/2016 NA NA NA NA NA NA NA NA NA NA 4,350 9,900 2,270 11,470 344 923 406 67.4 <50.0 <50.0 NA NA NA NA NA NA NA NA NA NA 86.0 NA NA NA NA NA 8/17/2016 NA NA NA NA NA NA NA NA NA NA 5,840 15,600 1,800 9,890 1,550 1,780 1,390 <100 <100 <100 NA NA NA NA NA NA NA NA NA NA 233 NA NA NA NA NA 2/14/2017 NA NA NA NA NA NA NA NA NA NA 10,300 26,200 2,630 14,650 2,180 1,490 2,710 <200 <200 <200 NA NA NA NA NA NA NA NA NA NA 298 NA NA NA NA NA 8/15/2017 NA NA NA NA NA NA NA NA NA NA 5,800 21,000 2,800 14,100 340 880 541 83 J <100 <100 NA NA NA NA NA NA NA NA NA NA 120 NA NA NA NA NA 2/19/2018 NA NA NA NA NA NA NA NA NA NA 3,900 15,000 2,500 8,400 310 900 350 <100 <100 <100 NA NA NA NA NA NA NA NA NA NA 190 NA NA NA NA NA 9/19/2008 4/14/2009 4/1/2010 NA NA NA NA NA NA NA NA NA NA 9,190 12,700 1,920 10,360 4,660 **524 1,270 NA NA NA NA NA NA NA NA NA 524 NA NA <100 NA NA NA NA NA NA 1/19/2011 2/14/2012 459 <95 373 107,000 11,500 23,100 107,000 11,973 <95 11,959 26,300 35,400 2,840 14,500 10,700 **652 5,380 NA <130 <130 432 291 J 443 <21 118 243 652 <9.7 <21 NA 416 NA NA NA NA NA 8/9/2012 2,950 <95 2,650 111,000 13,800 24,400 111,000 13,250 <95 16,750 26,700 38,600 4,380 21,800 20,300 **644 7,830 NA 416 840 326 <190 <21 <21 201 201 644 50.9 J <21 NA 458 NA NA NA NA NA 2/13/2013 3,580 <1,000 5,850 179,000 <10,000 62,200 179,000 68,050 <1,000 3,580 26,900 39,500 2,750 15,050 3,760 **694 3,490 NA <100 <100 543 <515 <103 <103 Not Reported 345 694 <51.5 <51.5 NA 506 NA NA NA NA NA 8/14/2013 1,350 <400 2,270 107,000 <5,000 34,200 107,000 36,470 <400 1,350 26,500 36,500 2,370 12,660 22,400 **530 5,310 NA <20.0 <20.0 NA NA <100 NA NA NA 530 <50.0 <50.0 NA 403 NA NA NA NA NA 2/12/2014 268 <100 <100 7,870 <2,500 3,370 7,870 3,370 <100 268 1,770 1,830 159 1,122 1,010 **238 397 NA <20.0 <20.0 NA NA <100 NA NA NA 238 <50.0 <50.0 NA 37.2 NA NA NA NA NA 8/15/2014 1,480 <100 <100 2,910 <500 2,450 2,910 2,450 <100 1,480 332 866 90.3 504 215 1,150 61.4 NA <20.0 <20.0 NA NA NA NA NA NA NA NA NA NA 15.2 NA NA NA NA NA 2/18/2015 NA NA NA NA NA NA NA NA NA NA 370 1,400 134 806 102 2,810 38.3 <10.0 <10.0 <10.0 NA NA NA NA NA NA NA NA NA NA 17.3 NA NA NA NA NA 8/19/2015 NA NA NA NA NA NA NA NA NA NA 636 3,120 344 2,277 <25.0 3,190 <25.0 <25.0 <25.0 <25.0 NA NA NA NA NA NA NA NA NA NA 29.8 NA NA NA NA NA 2/18/2016 NA NA NA NA NA NA NA NA NA NA 245 2,190 328 2,109 <20.0 2,090 <20.0 <20.0 <20.0 <20.0 NA NA NA NA NA NA NA NA NA NA 8.4 NA NA NA NA NA 8/17/2016 NA NA NA NA NA NA NA NA NA NA 3.3 233 85.6 542 <2.5 367 <2.5 4.6 <2.5 <2.5 NA NA NA NA NA NA NA NA NA NA 0.18 NA NA NA NA NA 2/14/2017 NA NA NA NA NA NA NA NA NA NA 209 4,360 764 5,280 <25.0 2,900 <25.0 27.3 <25.0 <25.0 NA NA NA NA NA NA NA NA NA NA 15.8 NA NA NA NA NA 8/15/2017 NA NA NA NA NA NA NA NA NA NA 23,000 34,000 1,800 8,800 1,700 1,000 1,800 <250 <250 <250 NA NA NA NA NA NA NA NA NA NA 530 NA NA NA NA NA 2/19/2018 NA NA NA NA NA NA NA NA NA NA 23,000 34,000 2,300 7,400 5,200 1,100 2,500 <250 <250 <250 NA NA NA NA NA NA NA NA NA NA 450 NA NA NA NA NA 9/19/2008 4/14/2009 4/1/2010 NA NA NA NA NA NA NA NA NA NA 19,000 30,300 2,740 14,680 3,560 **918 2,550 NA NA NA NA NA NA NA NA NA 918 NA NA <250 NA NA NA NA NA NA 1/19/2011 3,400 <200 4,500 56,000 6,800 3,000 56,000 700 <200 10,200 15,000 26,000 3,600 19,000 1,500 **1,000 2,000 NA 930 <50 NA NA <250 NA NA NA 1,000 <250 <250 NA 15 NA NA NA NA NA 2/13/2012 8/9/2012 1,940 <95 2,090 50,000 19,800 29,700 50,000 11,990 <95 21,740 8,840 23,500 2,700 16,000 1,220 **1,050 979 NA <100 <100 65.8 J <190 <21 <21 453 453 1,050 41.4 J <21 NA 107 NA NA NA NA NA 2/14/2013 7,320 <2,130 17,600 54,600 9,650 76,800 54,600 94,400 <2,130 16,970 4,430 11,400 3,050 19,100 551 **1,760 178 NA <50.0 <50.0 <5.0 <50.0 <10.0 <10.0 Not Reported 1,300 1,760 <5.0 7.7 NA 36.9 NA NA NA NA NA 8/14/2013 3,630 <200 1,810 3,900 3,560 13,500 3,900 15,310 <200 7,190 275 1,280 406 3,100 109 **875 40.4 NA <12.5 <12.5 NA NA <1,000 NA NA NA 875 <500 <500 NA 21.8 NA NA NA NA NA 2/12/2014 1,740 <100 <100 28,500 <5,000 17,400 28,500 17,400 <100 1,740 4,900 5,770 812 4,590 2,170 **815 1,460 NA <20.0 <20.0 NA NA <500 NA NA NA 815 <250 <250 NA 114 NA NA NA NA NA 8/14/2014 3,080 <100 <100 2,310 4,640 18,000 2,310 18,000 <100 7,720 <50.0 603 248 2,170 <50.0 3,440 <50.0 NA <50.0 <50.0 NA NA NA NA NA NA NA NA NA NA <0.021 NA NA NA NA NA 2/18/2015 NA NA NA NA NA NA NA NA NA NA 164 3,000 911 6,540 <25.0 2,050 <25.0 53.7 <25.0 <25.0 NA NA NA NA NA NA NA NA NA NA 15.2 NA NA NA NA NA 8/19/2015 NA NA NA NA NA NA NA NA NA NA 233 4,730 1,650 11,380 <25.0 2,480 <25.0 88.9 <25.0 <25.0 NA NA NA NA NA NA NA NA NA NA 12.6 NA NA NA NA NA 2/18/2016 NA NA NA NA NA NA NA NA NA NA 189 2,110 1,430 8,230 <25.0 1,010 <25.0 72.5 <25.0 <25.0 NA NA NA NA NA NA NA NA NA NA 2.7 NA NA NA NA NA 8/17/2016 NA NA NA NA NA NA NA NA NA NA 61.8 1,630 871 5,090 <20.0 1,710 <20.0 56.7 <20.0 <20.0 NA NA NA NA NA NA NA NA NA NA 5.4 NA NA NA NA NA 2/14/2017 NA NA NA NA NA NA NA NA NA NA 145 3,040 1,290 8,570 <20.0 1,380 <20.0 80.2 <20.0 <20.0 NA NA NA NA NA NA NA NA NA NA 6.8 NA NA NA NA NA 8/15/2017 NA NA NA NA NA NA NA NA NA NA 210 5,800 2,000 11,300 <25 870 <25 96 <25 <25 NA NA NA NA NA NA NA NA NA NA 4.0 NA NA NA NA NA 2/19/2018 NA NA NA NA NA NA NA NA NA NA 100 4,300 2,400 8,200 <100 1,200 <100 130 <100 <100 NA NA NA NA NA NA NA NA NA NA 1.5 NA NA NA NA NA WELL ID NS; FREE PRODUCT PRESENT AT A THICKNESS OF 0.78 FEET EPA METHOD 602 C 5 - C 8 H Y D R O C A R B O N C H A I N A L I P H A T I C S DATE SAMPLED C 9 - C 2 2 H Y D R O C A R B O N C H A I N A R O M A T I C S MADEP VPH S U L F A T E M E T H A N E C 9 - C 1 8 H Y D R O C A R B O N C H A I N A L I P H A T I C S MADEP EPH C 1 9 - C 3 6 H Y D R O C A R B O N C H A I N A L I P H A T I C S NS; FREE PRODUCT PRESENT AT A THICKNESS OF 0.14 FEET NS; FREE PRODUCT PRESENT AT A THICKNESS OF 0.49 FEET EPA METHOD 625 NS; FREE PRODUCT PRESENT AT A THICKNESS OF 0.02 FEET L E A D NS; SHEEN PRESENT NS; FREE PRODUCT PRESENT AT A THICKNESS OF 0.02 FEET MW-1 MW-2 MW-3 Page 1 of 6 Table 6 Table 3 Historical Groundwater Analytical Summary Former Tilley's Superette 1710 Union Grove Road Lenoir, North Carolina Facility ID Number 0-007680 Incident Number: 28466 EPA METHOD 504.1 C 1 1 - C 2 2 A R O M A T I C S C 1 9 - C 3 6 A L I P H A T I C S C 9 - C 1 8 A L I P H A T I C S C 5 - C 8 A L I P H A T I C S C 9 - C 1 0 A R O M A T I C S C 9 - C 1 2 A L I P H A T I C S B E N Z E N E T O L U E N E E T H Y L B E N Z E N E T O T A L X Y L E N E S M T B E N A P H T H A L E N E I S O P R O P Y L E T H E R IS O P R O P Y L B E N Z E N E 1 , 2 - D I C H L O R O B E N Z E N E 1, 4 - D I C H L O R O B E N Z E N E BE N Z Y L A L C O H O L BE N Z O I C A C I D 2, 4 - D I M E T H Y L P H E N O L 3& 4 - M E T H Y L P H E N O L 1 - M E T H Y L N A P H T H A L E N E 2 - M E T H Y L N A P H T H A L E N E N A P H T H A L E N E PH E N O L BI S ( 2 - E T H Y L H E X Y L ) P H T H A L A T E IS O P R O P Y L B E N Z E N E E D B F E R R O U S I R O N N I T R A T E WELL ID EPA METHOD 602 C 5 - C 8 H Y D R O C A R B O N C H A I N A L I P H A T I C S DATE SAMPLED C 9 - C 2 2 H Y D R O C A R B O N C H A I N A R O M A T I C S MADEP VPH S U L F A T E M E T H A N E C 9 - C 1 8 H Y D R O C A R B O N C H A I N A L I P H A T I C S MADEP EPH C 1 9 - C 3 6 H Y D R O C A R B O N C H A I N A L I P H A T I C S EPA METHOD 625 L E A D 10/7/2008 <170 <200 <200 <75 <10 <55 <75 ND <200 ND <1 <1 <1 <1 <1 **<1 NA NA NA NA NA NA <5 NA <5 <5 <1 <5 <3 <1 <1 226 NA NA NA NA 4/14/2009 NA NA NA NA NA NA NA NA NA NA 6.8 <1 1.7 3.4 <8 **<10 <1 NA NA NA NA NA NA NA <5 <5 <10 NA NA NA NA NA <1.2 412 2,630 <5,000 4/1/2010 NA NA NA NA NA NA NA NA NA NA <1 2.2 <1 <1 <1 **<2 <1 NA NA NA NA NA NA NA NA NA <2 NA NA <1 NA NA NA NA NA NA 1/19/2011 750 <200 <200 <30 <5 <35 <30 ND <200 750 <1 <1 <1 <1 <8 **<5 <1 NA <1 <1 NA NA <5 NA NA NA <5 <5 <5 NA <0.022 NA NA NA NA NA 2/13/2012 <95 <95 <95 <35 <35 <35 <35 ND <95 ND <0.50 <0.50 <0.50 <1.0 <0.50 **<0.77 <0.50 NA <0.50 <0.50 <0.96 <9.6 <1.1 <1.1 <0.48 <0.55 <0.77 <0.48 <1.1 NA <0.0094 NA NA NA NA NA 8/8/2012 <95 <95 <95 98.3 J <35 <35 98.3 J ND <95 ND <0.50 <0.50 <0.50 <1.0 <0.50 **<0.76 <0.50 NA <0.50 <0.50 <0.95 <9.5 <1.0 <1.0 <0.48 <0.54 <0.76 <0.48 <1.0 NA <0.0094 NA NA NA NA NA 2/13/2013 <100 <100 <100 <50.0 <50.0 <50.0 <50.0 ND <100 ND <1.0 <1.0 <1.0 <3.0 <1.0 **<5.1 <1.0 NA <1.0 <1.0 <5.1 <51.0 <10.2 <10.2 Not Reported <5.1 <5.1 <5.1 <5.1 NA 0.085 NA NA NA NA NA 8/14/2013 <100 <100 <100 <50.0 <50.0 <50.0 <50.0 ND <100 ND <1.0 <1.0 <1.0 <3.0 <1.0 **<5.0 <1.0 NA <1.0 <1.0 NA NA <10.0 NA NA NA <5.0 <5.0 <5.0 NA <0.019 NA NA NA NA NA 2/11/2014 <100 <100 <100 <50.0 <50.0 <50.0 <50.0 ND <100 ND <1.0 <1.0 <1.0 <3.0 <1.0 **<5.0 <1.0 NA <1.0 <1.0 NA NA <10.0 NA NA NA <5.0 <5.0 <5.0 NA 0.057 NA NA NA NA NA 8/14/2014 <100 <100 <100 <50.0 <50.0 <50.0 <50.0 ND <100 ND <1.0 <1.0 <1.0 <3.0 <1.0 <2.0 <1.0 NA <1.0 <1.0 NA NA NA NA NA NA NA NA NA NA <0.020 NA NA NA NA NA 2/17/2015 NA NA NA NA NA NA NA NA NA NA <1.0 <1.0 <1.0 <3.0 <1.0 <2.0 <1.0 <1.0 <1.0 <1.0 NA NA NA NA NA NA NA NA NA NA <0.020 NA NA NA NA NA 8/19/2015 NA NA NA NA NA NA NA NA NA NA <1.0 <1.0 <1.0 <3.0 <1.0 <2.0 <1.0 <1.0 <1.0 <1.0 NA NA NA NA NA NA NA NA NA NA <0.020 NA NA NA NA NA 2/18/2016 NA NA NA NA NA NA NA NA NA NA <1.0 <1.0 <1.0 <3.0 <1.0 <2.0 <1.0 <1.0 <1.0 <1.0 NA NA NA NA NA NA NA NA NA NA <0.020 NA NA NA NA NA 9/19/2008 210 <200 <200 <75 <10 <55 <75 ND <200 210 <1 2.5 <1 <1 <1 **<1 NA NA NA NA <10 NA <5 NA <5 <5 <1 <5 <3 <1 <1 18 NA NA NA NA 4/14/2009 NA NA NA NA NA NA NA NA NA NA <1 <1 <1 <1 <8 **<10 <1 NA NA NA NA NA NA NA <5 <5 <10 NA NA NA NA NA <1.2 645 <10 9,750 4/1/2010 NA NA NA NA NA NA NA NA NA NA <1 6.5 <1 4.7 <1 **<2 <1 NA NA NA NA NA NA NA NA NA <2 NA NA <1 NA NA NA NA NA NA 1/19/2011 650 <200 <200 240 5.2 <35 240 5.2 <200 655 1.8 4.8 <1 5.6 12 **<5 3.7 NA <1 <1 NA NA <5 NA NA NA <5 <5 <5 NA <0.021 NA NA NA NA NA 2/14/2012 <95 <95 <95 <35 <35 <35 <35 ND <95 ND 3.1 11.7 2.8 17.0 2.9 **1.6 J 1.5 NA <0.50 <0.50 <0.96 <9.6 <1.1 <1.1 <0.48 0.71 J 1.6 J 0.78 J 1.7 J NA 0.16 NA NA NA NA NA 8/9/2012 <95 <95 <95 <35 <35 <35 <35 ND <95 ND <0.50 <0.50 <0.50 <1.0 0.57 J **<0.76 <0.50 NA <0.50 <0.50 <0.95 <9.5 <1.0 <1.0 <0.48 <0.54 <0.76 <0.48 1.2 J NA 0.011 J NA NA NA NA NA 2/14/2013 <104 <104 <104 <50.0 <50.0 <50.0 <50.0 ND <104 ND <1.0 <1.0 <1.0 <3.0 <1.0 **<5.0 <1.0 NA <1.0 <1.0 <5.0 <50.0 <10.0 <10.0 Not Reported <5.0 <5.0 <5.0 <5.0 NA <0.020 NA NA NA NA NA 8/14/2013 <100 <100 <100 <50.0 <50.0 <50.0 <50.0 ND <100 ND <1.0 <1.0 <1.0 <3.0 <1.0 **<5.0 <1.0 NA <1.0 <1.0 NA NA <10.0 NA NA NA <5.0 <5.0 <5.0 NA <0.019 NA NA NA NA NA 2/11/2014 <100 <100 <100 <50.0 <50.0 <50.0 <50.0 ND <100 ND <1.0 <1.0 <1.0 <3.0 <1.0 **<5.0 <1.0 NA <1.0 <1.0 NA NA <10.0 NA NA NA <5.0 <5.0 <5.0 NA <0.020 NA NA NA NA NA 8/14/2014 <100 <100 <100 <50.0 <50.0 <50.0 <50.0 ND <100 ND <1.0 <1.0 <1.0 <3.0 <1.0 <2.0 <1.0 NA <1.0 <1.0 NA NA NA NA NA NA NA NA NA NA 12.7 NA NA NA NA NA 2/18/2015 NA NA NA NA NA NA NA NA NA NA <1.0 2.1 <1.0 <3.0 <1.0 <2.0 <1.0 <1.0 <1.0 <1.0 NA NA NA NA NA NA NA NA NA NA 0.051 NA NA NA NA NA 8/19/2015 NA NA NA NA NA NA NA NA NA NA 3.7 13.2 1.1 5.0 <1.0 <2.0 <1.0 <1.0 <1.0 <1.0 NA NA NA NA NA NA NA NA NA NA 0.24 NA NA NA NA NA 2/18/2016 NA NA NA NA NA NA NA NA NA NA <1.0 <1.0 <1.0 <3.0 <1.0 <2.0 <1.0 <1.0 <1.0 <1.0 NA NA NA NA NA NA NA NA NA NA <0.019 NA NA NA NA NA 8/17/2016 NA NA NA NA NA NA NA NA NA NA <1.0 <1.0 <1.0 <3.0 <1.0 <2.0 <1.0 <1.0 <1.0 <1.0 NA NA NA NA NA NA NA NA NA NA <0.019 NA NA NA NA NA 2/14/2017 NA NA NA NA NA NA NA NA NA NA <1.0 <1.0 <1.0 <3.0 <1.0 <2.0 <1.0 <1.0 <1.0 <1.0 NA NA NA NA NA NA NA NA NA NA <0.019 NA NA NA NA NA 8/15/2017 NA NA NA NA NA NA NA NA NA NA <0.50 <0.50 <0.50 <1.0 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 NA NA NA NA NA NA NA NA NA NA <0.020 NA NA NA NA NA 2/19/2018 NA NA NA NA NA NA NA NA NA NA <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 NA NA NA NA NA NA NA NA NA NA <0.0098 NA NA NA NA NA 10/7/2008 <170 <200 <200 <75 <10 <55 <75 ND <200 ND <1 <1 <1 <1 <1 **<1 NA NA NA NA NA NA <5 NA <5 <5 <1 <5 13 <1 <1 237 NA NA NA NA 4/29/2009 NA NA NA NA NA NA NA NA NA NA <1 <1 <1 <1 <8 **<10 <1 NA NA NA NA NA NA NA <5 <5 <10 NA NA NA NA NA 2.21 310 <0.10 <5,000 4/1/2010 NA NA NA NA NA NA NA NA NA NA <1 <1 <1 <1 <1 **<2 <1 NA NA NA NA NA NA NA NA NA <2 NA NA <1 NA NA NA NA NA NA 1/19/2011 440 <200 <200 <30 <5 <35 <30 ND <200 440 <1 <1 <1 <1 <8 **<5 <1 NA <1 <1 NA NA <5 NA NA NA <5 <5 <5 NA <0.021 NA NA NA NA NA 2/14/2012 <95 <95 <95 <35 <35 <35 <35 ND <95 ND <0.50 <0.50 <0.50 <1.0 <0.50 **<0.76 <0.50 NA <0.50 <0.50 <0.95 <9.5 <1.0 <1.0 <0.48 <0.54 <0.76 <0.48 <1.0 NA <0.0095 NA NA NA NA NA 8/8/2012 <95 <95 <95 <35 <35 <35 <35 ND <95 ND <0.50 <0.50 <0.50 <1.0 <0.50 **<0.77 <0.50 NA <0.50 <0.50 <0.96 <9.6 <1.1 <1.1 <0.48 <0.55 <0.77 <0.48 <1.1 NA <0.0094 NA NA NA NA NA 2/13/2013 <100 <100 <100 <50.0 <50.0 <50.0 <50.0 ND <100 ND <1.0 <1.0 <1.0 <3.0 <1.0 **<5.0 <1.0 NA <1.0 <1.0 <5.0 <50.0 <10.0 <10.0 Not Reported <5.0 <5.0 <5.0 <5.0 NA <0.020 NA NA NA NA NA 8/14/2013 <100 <100 <100 <50.0 <50.0 <50.0 <50.0 ND <100 ND <1.0 <1.0 <1.0 <3.0 <1.0 **<5.0 <1.0 NA <1.0 <1.0 NA NA <10.0 NA NA NA <5.0 <5.0 <5.0 NA <0.019 NA NA NA NA NA 2/11/2014 <100 <100 <100 <50.0 <50.0 <50.0 <50.0 ND <100 ND <1.0 <1.0 <1.0 <3.0 <1.0 **<5.0 <1.0 NA <1.0 <1.0 NA NA <10.0 NA NA NA <5.0 <5.0 <5.0 NA <0.020 NA NA NA NA NA 8/14/2014 <100 <100 <100 <50.0 <50.0 <50.0 <50.0 ND <100 ND <1.0 <1.0 <1.0 <3.0 <1.0 <2.0 <1.0 NA <1.0 <1.0 NA NA NA NA NA NA NA NA NA NA <0.020 NA NA NA NA NA 2/17/2015 NA NA NA NA NA NA NA NA NA NA <1.0 <1.0 <1.0 <3.0 <1.0 <2.0 <1.0 <1.0 <1.0 <1.0 NA NA NA NA NA NA NA NA NA NA <0.020 NA NA NA NA NA 10/7/2008 <170 <200 <200 <75 <10 <55 <75 ND <200 ND <1 <1 <1 <1 <1 **<1 NA NA NA NA NA NA <5 NA <5 <5 <1 <5 <3 NA <1 69.8 NA NA NA NA 4/14/2009 NA NA NA NA NA NA NA NA NA NA 2.5 <1 <1 1.6 <8 **<10 <1 NA NA NA NA NA NA NA <5 <5 <10 NA NA <1 NA NA <1.2 118 96 <5,000 4/1/2010 NA NA NA NA NA NA NA NA NA NA <1 1.5 <1 <1 <1 **<2 <1 NA NA NA NA NA NA NA NA NA <2 NA NA <1 NA NA NA NA NA NA 1/19/2011 240 <200 <200 <30 <5 <35 <30 ND <200 240 <1 <1 <1 <1 <8 **<5 <1 NA <1 <1 NA NA <5 NA NA NA <5 <5 <5 NA <0.022 NA NA NA NA NA 2/14/2012 <95 <95 <95 <35 <35 <35 <35 ND <95 ND <0.50 <0.50 <0.50 <1.0 <0.50 **<0.77 <0.50 NA <0.50 <0.50 <0.96 <9.6 <1.1 <1.1 <0.48 <0.55 <0.77 <0.48 <1.1 NA <0.0095 NA NA NA NA NA 8/8/2012 <95 <95 <95 <35 <35 <35 <35 ND <95 ND <0.50 <0.50 <0.50 <1.0 <0.50 **<0.77 <0.50 NA <0.50 <0.50 <0.96 <9.6 <1.1 <1.1 <0.48 <0.55 <0.77 <0.48 <1.1 NA <0.0094 NA NA NA NA NA 2/13/2013 <100 <100 <100 <50.0 <50.0 <50.0 <50.0 ND <100 ND <1.0 <1.0 <1.0 <3.0 <1.0 **<5.0 <1.0 NA <1.0 <1.0 <5.0 <50.0 <10.0 <10.0 Not Reported <5.0 <5.0 <5.0 <5.0 NA <0.020 NA NA NA NA NA 8/14/2013 <100 <100 <100 <50.0 <50.0 <50.0 <50.0 ND <100 ND <1.0 <1.0 <1.0 <3.0 <1.0 **<5.0 <1.0 NA <1.0 <1.0 NA NA <10.0 NA NA NA <5.0 <5.0 <5.0 NA <0.020 NA NA NA NA NA 2/11/2014 <100 <100 <100 <50.0 <50.0 <50.0 <50.0 ND <100 ND <1.0 <1.0 <1.0 <3.0 <1.0 **<5.0 <1.0 NA <1.0 <1.0 NA NA <10.0 NA NA NA <5.0 <5.0 <5.0 NA <0.020 NA NA NA NA NA 8/14/2014 <100 <100 <100 <50.0 <50.0 <50.0 <50.0 ND <100 ND <1.0 <1.0 <1.0 <3.0 <1.0 <2.0 <1.0 NA <1.0 <1.0 NA NA NA NA NA NA NA NA NA NA <0.020 NA NA NA NA NA 2/17/2015 NA NA NA NA NA NA NA NA NA NA <1.0 <1.0 <1.0 <3.0 <1.0 <2.0 <1.0 <1.0 <1.0 <1.0 NA NA NA NA NA NA NA NA NA NA <0.020 NA NA NA NA NA MW-6 MW-7 MW-4 MW-5D Page 2 of 6 Table 6 Table 3 Historical Groundwater Analytical Summary Former Tilley's Superette 1710 Union Grove Road Lenoir, North Carolina Facility ID Number 0-007680 Incident Number: 28466 EPA METHOD 504.1 C 1 1 - C 2 2 A R O M A T I C S C 1 9 - C 3 6 A L I P H A T I C S C 9 - C 1 8 A L I P H A T I C S C 5 - C 8 A L I P H A T I C S C 9 - C 1 0 A R O M A T I C S C 9 - C 1 2 A L I P H A T I C S B E N Z E N E T O L U E N E E T H Y L B E N Z E N E T O T A L X Y L E N E S M T B E N A P H T H A L E N E I S O P R O P Y L E T H E R IS O P R O P Y L B E N Z E N E 1 , 2 - D I C H L O R O B E N Z E N E 1, 4 - D I C H L O R O B E N Z E N E BE N Z Y L A L C O H O L BE N Z O I C A C I D 2, 4 - D I M E T H Y L P H E N O L 3& 4 - M E T H Y L P H E N O L 1 - M E T H Y L N A P H T H A L E N E 2 - M E T H Y L N A P H T H A L E N E N A P H T H A L E N E PH E N O L BI S ( 2 - E T H Y L H E X Y L ) P H T H A L A T E IS O P R O P Y L B E N Z E N E E D B F E R R O U S I R O N N I T R A T E WELL ID EPA METHOD 602 C 5 - C 8 H Y D R O C A R B O N C H A I N A L I P H A T I C S DATE SAMPLED C 9 - C 2 2 H Y D R O C A R B O N C H A I N A R O M A T I C S MADEP VPH S U L F A T E M E T H A N E C 9 - C 1 8 H Y D R O C A R B O N C H A I N A L I P H A T I C S MADEP EPH C 1 9 - C 3 6 H Y D R O C A R B O N C H A I N A L I P H A T I C S EPA METHOD 625 L E A D 9/19/2008 170 <200 <200 <75 <10 <55 <75 ND <200 170 <1 <1 <1 <1 1.5 **<1 NA NA NA NA <10 NA <5 NA <5 <5 <1 <5 <3 NA <1 168 NA NA NA NA 4/14/2009 NA NA NA NA NA NA NA NA NA NA 7.6 <1 1.9 4.2 <8 **<10 <1 NA NA NA NA NA NA NA <5 <5 <10 NA NA <1 NA NA <1.2 221 50 <5,000 4/1/2010 NA NA NA NA NA NA NA NA NA NA 1.3 1.9 1.5 7.5 <1 **<2 <1 NA NA NA NA NA NA NA NA NA <2 NA NA <1 NA NA NA NA NA NA 1/19/2011 220 <200 <200 <30 <5 <35 <30 ND <200 220 <1 <1 <1 <1 <8 **<5 <1 NA <1 <1 NA NA <5 NA NA NA <5 <5 <5 NA <0.021 NA NA NA NA NA 2/14/2012 <95 <95 <95 <35 <35 <35 <35 ND <95 ND <0.50 <0.50 <0.50 <1.0 <0.50 **<0.78 <0.50 NA <0.50 <0.50 <0.98 <9.8 <1.1 <1.1 <0.49 <0.56 <0.78 <0.49 <1.1 NA <0.0095 NA NA NA NA NA 8/9/2012 <95 <95 <95 <35 <35 <35 <35 ND <95 ND <0.50 <0.50 <0.50 <1.0 <0.50 **<0.76 <0.50 NA <0.50 <0.50 <0.95 <9.5 <1.0 <1.0 <0.48 <0.54 <0.76 <0.48 <1.0 NA <0.0093 NA NA NA NA NA 2/14/2013 <100 <100 <100 <50.0 <50.0 <50.0 <50.0 ND <100 ND <1.0 <1.0 <1.0 <3.0 <1.0 **<5.2 <1.0 NA <1.0 <1.0 <5.2 <51.5 <10.3 <10.3 Not Reported <5.2 <5.2 <5.2 <5.2 NA <0.020 NA NA NA NA NA 8/14/2013 <100 <100 <100 <50.0 <50.0 <50.0 <50.0 ND <100 ND <1.0 <1.0 <1.0 <3.0 <1.0 **<5.0 <1.0 NA <1.0 <1.0 NA NA <10.0 NA NA NA <5.0 <5.0 <5.0 NA <0.019 NA NA NA NA NA 2/11/2014 <100 <100 <100 <50.0 <50.0 <50.0 <50.0 ND <100 ND <1.0 <1.0 <1.0 <3.0 <1.0 **<5.0 <1.0 NA <1.0 <1.0 NA NA <10.0 NA NA NA <5.0 <5.0 <5.0 NA <0.020 NA NA NA NA NA 8/15/2014 <100 <100 <100 <50.0 <50.0 <50.0 <50.0 ND <100 ND <1.0 <1.0 <1.0 <3.0 <1.0 <2.0 <1.0 NA <1.0 <1.0 NA NA NA NA NA NA NA NA NA NA <0.020 NA NA NA NA NA 2/17/2015 NA NA NA NA NA NA NA NA NA NA <1.0 <1.0 <1.0 <3.0 <1.0 <2.0 <1.0 <1.0 <1.0 <1.0 NA NA NA NA NA NA NA NA NA NA <0.020 NA NA NA NA NA 9/19/2008 780 <200 210 3,300 1,800 4,300 3,300 2,710 <200 2,580 1,100 470 390 1,560 380 **250 NA NA NA NA <10 NA <5 NA 42 87 250 <5 <3 NA 4.8 168 NA NA NA NA 4/14/2009 NA NA NA NA NA NA NA NA NA NA 1,500 220 460 1,490 430 **200 310 NA NA NA NA NA NA NA 18 38 200 NA NA NA NA NA <1.2 221 50 <5,000 4/1/2010 NA NA NA NA NA NA NA NA NA NA 736 99.5 198 936 278 **113 159 NA NA NA NA NA NA NA NA NA 113 NA NA 22.1 NA NA NA NA NA NA 1/19/2011 <510 <200 780 2,000 780 3,100 2,000 3,100 <200 780 660 220 340 1,120 190 **<5 140 NA 88 <5 NA NA <5 NA NA NA <5 <5 <5 NA 0.33 NA NA NA NA NA 2/14/2012 261 <95 282 1,920 3,250 3,240 1,920 272 <95 3,511 459 136 329 1,110 140 **53.3 101 NA <5.0 <5.0 <0.95 <9.5 1.2 J 2.3 J 18.0 33.5 53.3 <0.48 <1.0 NA 1.0 NA NA NA NA NA 8/9/2012 276 <95 <95 1,370 2,350 1,880 1,370 1,880 <95 2,626 207 70.8 203 694 52.9 **49.1 39.8 NA <2.5 <2.5 <0.95 <9.5 6.1 1.6 J 18.1 29.9 49.1 2.1 J <1.0 NA 0.40 NA NA NA NA NA 2/14/2013 224 <100 <100 7,230 <2,500 9,000 7,230 9,000 <100 224 1,400 205 541 1,880 402 **86.3 277 NA <4.0 <4.0 <5.0 <50.0 <10.0 <10.0 Not Reported 34.1 86.3 <5.0 <5.0 NA 2.4 NA NA NA NA NA 8/15/2013 <100 <100 <100 <50.0 <50.0 59.9 <50.0 59.9 <100 ND 12.1 1.3 3.6 15.7 5.7 **5.9 4.2 NA <1.0 <1.0 NA NA <10.0 NA NA NA 5.9 <5.0 <5.0 NA 0.022 NA NA NA NA NA 2/12/2014 <100 <100 <100 <50.0 <50.0 <50.0 <50.0 ND <100 ND <1.0 <1.0 <1.0 1.7 <1.0 **12.9 2.1 NA <1.0 <1.0 NA NA <10.0 NA NA NA 12.9 <5.0 <5.0 NA <0.020 NA NA NA NA NA 8/14/2014 <100 <100 <100 155 64.1 293 155 293 <100 64.1 36.2 5.5 14.7 55.4 24.0 7.6 12.4 NA <1.0 <1.0 NA NA NA NA NA NA NA NA NA NA 0.040 NA NA NA NA NA 2/17/2015 NA NA NA NA NA NA NA NA NA NA 3.9 2.7 5.3 16.9 5.6 <2.0 1.9 <1.0 <1.0 <1.0 NA NA NA NA NA NA NA NA NA NA 0.034 NA NA NA NA NA 8/19/2015 NA NA NA NA NA NA NA NA NA NA 562 123 192 518 242 95.5 119 16.0 <1.0 <1.0 NA NA NA NA NA NA NA NA NA NA 0.79 NA NA NA NA NA 2/18/2016 NA NA NA NA NA NA NA NA NA NA 385 31.0 115 318.1 173 86.0 89.3 11.6 <2.5 <2.5 NA NA NA NA NA NA NA NA NA NA 0.45 NA NA NA NA NA 8/17/2016 NA NA NA NA NA NA NA NA NA NA 747 80.6 187 488 243 123 114 15.9 <5.0 <5.0 NA NA NA NA NA NA NA NA NA NA 0.85 NA NA NA NA NA 2/14/2017 NA NA NA NA NA NA NA NA NA NA 791 173 352 901 252 255 128 31.3 <5.0 <5.0 NA NA NA NA NA NA NA NA NA NA 1.2 NA NA NA NA NA 8/15/2017 NA NA NA NA NA NA NA NA NA NA 1,000 150 360 750 200 220 110 33 <25 <25 NA NA NA NA NA NA NA NA NA NA 1.2 NA NA NA NA NA 2/19/2018 NA NA NA NA NA NA NA NA NA NA 1,100 84 300 150 280 210 140 29 <10 <10 NA NA NA NA NA NA NA NA NA NA 0.6 NA NA NA NA NA 9/19/2008 200 <200 <200 <75 <10 <55 <75 ND <200 200 <1 <1 <1 <1 <1 **4 NA NA NA NA <10 NA <5 NA <5 <5 4 <5 <3 NA <1 28.7 NA NA NA NA 4/14/2009 NA NA NA NA NA NA NA NA NA NA <1 <1 <1 <1 <8 **<10 <1 NA NA NA NA NA NA NA <5 <5 <10 NA NA <1 NA NA <1.2 241 <10 <5,000 4/1/2010 NA NA NA NA NA NA NA NA NA NA <1 <1 <1 <1 <1 **<2 <1 NA NA NA NA NA NA NA NA NA <2 NA NA <1 NA NA NA NA NA NA 1/19/2011 370 <200 <200 <30 <5 <35 <30 ND <200 370 <1 <1 <1 <1 <8 **<250 <1 NA <1 <1 NA NA <250 NA NA NA <250 <250 <250 NA <0.021 NA NA NA NA NA 2/14/2012 <95 <95 <95 <35 <35 <35 <35 ND <95 ND <0.50 <0.50 <0.50 <1.0 <0.50 **<0.77 <0.50 NA <0.50 <0.50 <0.96 <9.6 <1.1 <1.1 <0.48 <0.55 <0.77 <0.48 <1.1 NA <0.0094 NA NA NA NA NA 8/8/2012 <95 <95 <95 <35 <35 <35 <35 ND <95 ND <0.50 <0.50 <0.50 <1.0 <0.50 **<0.76 <0.50 NA <0.50 <0.50 <0.95 <9.5 <1.0 <1.0 <0.48 <0.54 <0.76 <0.48 <1.0 NA <0.0096 NA NA NA NA NA 2/13/2013 <100 <100 <100 <50.0 <50.0 <50.0 <50.0 ND <100 ND <1.0 <1.0 <1.0 <3.0 <1.0 **<5.2 <1.0 NA <1.0 <1.0 <5.2 <51.5 <10.3 <10.3 Not Reported <5.2 <5.2 <5.2 <5.2 NA <0.020 NA NA NA NA NA 8/14/2013 <100 <100 <100 <50.0 <50.0 <50.0 <50.0 ND <100 ND <1.0 <1.0 <1.0 <3.0 <1.0 **<5.0 <1.0 NA <1.0 <1.0 NA NA <10.0 NA NA NA <5.0 <5.0 <5.0 NA <0.019 NA NA NA NA NA 2/11/2014 <100 <100 <100 <50.0 <50.0 <50.0 <50.0 ND <100 ND <1.0 <1.0 <1.0 <3.0 <1.0 **<5.0 <1.0 NA <1.0 <1.0 NA NA <10.0 NA NA NA <5.0 <5.0 <5.0 NA <0.020 NA NA NA NA NA 8/14/2014 <100 <100 <100 <50.0 <50.0 <50.0 <50.0 ND <100 ND <1.0 <1.0 <1.0 <3.0 <1.0 <2.0 <1.0 NA <1.0 <1.0 NA NA NA NA NA NA NA NA NA NA <0.020 NA NA NA NA NA 2/17/2015 NA NA NA NA NA NA NA NA NA NA <1.0 <1.0 <1.0 <3.0 <1.0 <2.0 <1.0 <1.0 <1.0 <1.0 NA NA NA NA NA NA NA NA NA NA <0.020 NA NA NA NA NA 9/19/2008 <170 <200 <200 180 <10 <55 180 ND <200 ND <1 <1 <1 <1 <1 **<1 NA NA NA NA <10 NA <5 NA <5 <5 <1 <5 <3 <1 <1 77.8 NA NA NA NA 4/14/2009 NA NA NA NA NA NA NA NA NA NA 9.4 <1 1.7 9.6 10 **<10 3.4 NA NA NA NA NA NA NA <5 <5 <10 NA NA NA NA NA <1.2 132 <10 <5,000 4/1/2010 NA NA NA NA NA NA NA NA NA NA 4.0 1.1 <1 4.4 <1 **<2 <1 NA NA NA NA NA NA NA NA NA <2 NA NA <1 NA NA NA NA NA NA 1/19/2011 250 <200 <200 170 7 <35 170 7 <200 257 <1 <1 <1 <1 <8 **<5 <1 NA <1 <1 NA NA <5 NA NA NA <5 <5 <5 NA <0.021 NA NA NA NA NA 2/14/2012 <95 <95 <95 <35 <35 <35 <35 ND <95 ND <0.50 <0.50 <0.50 <1.0 <0.50 **<0.76 0.87 J NA <0.50 <0.50 <0.95 <9.5 <1.0 <1.0 <0.48 <0.54 <0.76 <0.48 <1.0 NA <0.0094 NA NA NA NA NA 8/8/2012 <95 <95 <95 59.1 J <35 <35 59.1 J ND <95 ND <0.50 <0.50 <0.50 <1.0 <0.50 **<0.76 1.1 NA <0.50 <0.50 <0.95 <9.5 <1.0 <1.0 <0.48 <0.54 <0.76 <0.48 <1.0 NA <0.0094 NA NA NA NA NA 2/13/2013 <100 <100 <100 <50.0 <50.0 <50.0 <50.0 ND <100 ND <1.0 <1.0 <1.0 <3.0 <1.0 **<5.1 <1.0 NA <1.0 <1.0 <5.1 <51.0 <10.2 <10.2 Not Reported <5.1 <5.1 <5.1 <5.1 NA <0.020 NA NA NA NA NA 8/14/2013 <100 <100 <100 <50.0 <50.0 <50.0 <50.0 ND <100 ND <1.0 <1.0 <1.0 <3.0 <1.0 **<5.0 <1.0 NA <1.0 <1.0 NA NA <10.0 NA NA NA <5.0 <5.0 <5.0 NA <0.019 NA NA NA NA NA 2/11/2014 <100 <100 <100 <50.0 <50.0 <50.0 <50.0 ND <100 ND <1.0 <1.0 <1.0 <3.0 <1.0 **<5.0 <1.0 NA <1.0 <1.0 NA NA <10.0 NA NA NA <5.0 <5.0 <5.0 NA <0.020 NA NA NA NA NA 8/14/2014 <100 <100 <100 <50.0 <50.0 <50.0 <50.0 ND <100 ND <1.0 <1.0 <1.0 <3.0 <1.0 <2.0 <1.0 NA <1.0 <1.0 NA NA NA NA NA NA NA NA NA NA <0.020 NA NA NA NA NA 2/17/2015 NA NA NA NA NA NA NA NA NA NA <1.0 <1.0 <1.0 <3.0 <1.0 <2.0 <1.0 <1.0 <1.0 <1.0 NA NA NA NA NA NA NA NA NA NA <0.020 NA NA NA NA NA 8/19/2015 NA NA NA NA NA NA NA NA NA NA <1.0 <1.0 <1.0 <3.0 <1.0 <2.0 <1.0 <1.0 <1.0 <1.0 NA NA NA NA NA NA NA NA NA NA <0.020 NA NA NA NA NA MW-11 MW-8 MW-10 MW-9 Page 3 of 6 Table 6 Table 3 Historical Groundwater Analytical Summary Former Tilley's Superette 1710 Union Grove Road Lenoir, North Carolina Facility ID Number 0-007680 Incident Number: 28466 EPA METHOD 504.1 C 1 1 - C 2 2 A R O M A T I C S C 1 9 - C 3 6 A L I P H A T I C S C 9 - C 1 8 A L I P H A T I C S C 5 - C 8 A L I P H A T I C S C 9 - C 1 0 A R O M A T I C S C 9 - C 1 2 A L I P H A T I C S B E N Z E N E T O L U E N E E T H Y L B E N Z E N E T O T A L X Y L E N E S M T B E N A P H T H A L E N E I S O P R O P Y L E T H E R IS O P R O P Y L B E N Z E N E 1 , 2 - D I C H L O R O B E N Z E N E 1, 4 - D I C H L O R O B E N Z E N E BE N Z Y L A L C O H O L BE N Z O I C A C I D 2, 4 - D I M E T H Y L P H E N O L 3& 4 - M E T H Y L P H E N O L 1 - M E T H Y L N A P H T H A L E N E 2 - M E T H Y L N A P H T H A L E N E N A P H T H A L E N E PH E N O L BI S ( 2 - E T H Y L H E X Y L ) P H T H A L A T E IS O P R O P Y L B E N Z E N E E D B F E R R O U S I R O N N I T R A T E WELL ID EPA METHOD 602 C 5 - C 8 H Y D R O C A R B O N C H A I N A L I P H A T I C S DATE SAMPLED C 9 - C 2 2 H Y D R O C A R B O N C H A I N A R O M A T I C S MADEP VPH S U L F A T E M E T H A N E C 9 - C 1 8 H Y D R O C A R B O N C H A I N A L I P H A T I C S MADEP EPH C 1 9 - C 3 6 H Y D R O C A R B O N C H A I N A L I P H A T I C S EPA METHOD 625 L E A D 4/14/2009 NA NA NA NA NA NA NA NA NA NA 4,500 46 350 1,400 800 **110 650 NA NA NA NA NA NA NA 14 26 110 NA NA NA NA NA 1.47 487 <10 <5,000 4/1/2010 NA NA NA NA NA NA NA NA NA NA 854 13 67 447 193 **56.1 117 NA NA NA NA NA NA NA NA NA 56.1 NA NA <10 NA NA NA NA NA NA 1/20/2011 <170 <200 <200 2,000 130 560 2,000 430 <200 130 800 8.9 62 315 240 **29 120 NA 21 <1 NA NA <5 NA NA NA 29 <5 6.9 NA <0.022 NA NA NA NA NA 2/14/2012 124 <95 <95 1,430 357 458 1,430 101 <95 481 607 5.8 J 14.5 217 214 **12.2 98.9 NA <5.0 <5.0 <0.96 <9.6 <1.1 41.3 1.8 J 3.0 J 12.2 5.7 <1.1 NA 0.13 NA NA NA NA NA 8/8/2012 <95 <95 <95 176 37.7 J 41.5 J 176 3.8 <95 37.7 J 60.1 0.75 J 0.63 J 26.9 52.5 **<0.76 19.3 NA 1.2 <0.50 <0.95 <9.5 <1.0 <1.0 <0.48 <0.54 <0.76 <0.48 <1.0 NA 0.027 NA NA NA NA NA 2/14/2013 <100 <100 <100 7,030 <5,000 <5,000 7,030 ND <100 ND 1,950 14.6 34.1 664 510 **15.5 267 NA <2.0 <5.0 <5.0 <50.0 <10.0 <10.0 Not Reported <5.0 15.5 <5.0 <5.0 NA 0.040 NA NA NA NA NA 8/15/2013 <100 <100 <100 207 <50.0 67.3 207 67.3 <100 ND 86.0 <1.0 1.6 28.7 48.5 **<5.0 25.3 NA <1.0 <1.0 NA NA <10.0 NA NA NA <5.0 <5.0 <5.0 NA <0.019 NA NA NA NA NA 2/11/2014 <100 <100 <100 <50.0 <50.0 <50.0 <50.0 ND <100 ND <1.0 <1.0 <1.0 <3.0 10.8 **<5.0 4.1 NA <1.0 <1.0 NA NA <10.0 NA NA NA <5.0 <5.0 <5.0 NA <0.020 NA NA NA NA NA 8/15/2014 <100 <100 <100 222 <50.0 58.1 222 58.1 <100 ND 57.7 <1.0 <1.0 14.7 67.8 3.3 18.6 NA <1.0 <1.0 NA NA NA NA NA NA NA NA NA NA <0.020 NA NA NA NA NA 2/17/2015 NA NA NA NA NA NA NA NA NA NA 188 <1.0 <1.0 15.9 169 19.4 63.3 2.0 <1.0 <1.0 NA NA NA NA NA NA NA NA NA NA 0.034 NA NA NA NA NA 8/19/2015 NA NA NA NA NA NA NA NA NA NA 196 <1.0 <1.0 6.6 148 23.0 43.9 2.2 <1.0 <1.0 NA NA NA NA NA NA NA NA NA NA 0.034 NA NA NA NA NA 2/18/2016 NA NA NA NA NA NA NA NA NA NA 227 <1.0 1.8 9.3 109 19.7 34.6 2.5 <1.0 <1.0 NA NA NA NA NA NA NA NA NA NA <0.019 NA NA NA NA NA 8/17/2016 NA NA NA NA NA NA NA NA NA NA 294 <2.0 <2.0 9.3 140 35.1 43.7 3.5 <2.0 <2.0 NA NA NA NA NA NA NA NA NA NA 0.057 NA NA NA NA NA 2/14/2017 NA NA NA NA NA NA NA NA NA NA 196 <2.0 <2.0 2.4 112 36.5 37.6 3.5 <2.0 <2.0 NA NA NA NA NA NA NA NA NA NA 0.073 NA NA NA NA NA 8/15/2017 NA NA NA NA NA NA NA NA NA NA 370 <2.5 2.7 2.9 82 43 33 6.6 <2.5 <2.5 NA NA NA NA NA NA NA NA NA NA 0.031 NA NA NA NA NA 2/19/2018 NA NA NA NA NA NA NA NA NA NA 500 <5.0 <5.0 <5.0 120 69 47 11 <5.0 <5.0 NA NA NA NA NA NA NA NA NA NA 0.0076 J NA NA NA NA NA 4/14/2009 NA NA NA NA NA NA NA NA NA NA 32 <1 4.4 20.3 <8 **<10 <1 NA NA NA NA NA NA NA <5 <5 <10 NA NA NA NA NA <1.2 214 752 <5,000 4/1/2010 NA NA NA NA NA NA NA NA NA NA <1 <1 <1 1.1 <1 **<2 <1 NA NA NA NA NA NA NA NA NA <2 NA NA <1 NA NA NA NA NA NA 1/19/2011 <170 <200 <200 <30 <5 <35 <30 ND <200 ND <1 <1 <1 <1 <8 **<5 <1 NA <1 <1 NA NA <5 NA NA NA <5 <5 <5 NA <0.021 NA NA NA NA NA 2/14/2012 <95 <95 <95 <35 <35 <35 <35 ND <95 ND <0.50 <0.50 <0.50 <1.0 <0.50 **<0.76 <0.50 NA <0.50 <0.50 <0.95 <9.5 <1.0 <1.0 <0.48 <0.54 <0.76 <0.48 <1.0 NA <0.0094 NA NA NA NA NA 8/9/2012 <95 <95 <95 <35 <35 <35 <35 ND <95 ND <0.50 <0.50 <0.50 <1.0 <0.50 **<0.76 <0.50 NA <0.50 <0.50 <0.95 <9.5 <1.0 <1.0 <0.48 <0.54 <0.76 <0.48 <1.0 NA <0.0094 NA NA NA NA NA 2/14/2013 <100 <100 <100 <50.0 <50.0 <50.0 <50.0 ND <100 ND <1.0 <1.0 <1.0 <3.0 <1.0 **<5.0 <1.0 NA <1.0 <1.0 <5.0 <50.0 <10.0 <10.0 Not Reported <5.0 <5.0 <5.0 <5.0 NA <0.020 NA NA NA NA NA 8/15/2013 <100 <100 <100 <50.0 <50.0 <50.0 <50.0 ND <100 ND <1.0 <1.0 <1.0 <3.0 <1.0 **<5.0 <1.0 NA <1.0 <1.0 NA NA <10.0 NA NA NA <5.0 <5.0 <5.0 NA <0.020 NA NA NA NA NA 2/11/2014 <100 <100 <100 <50.0 <50.0 <50.0 <50.0 ND <100 ND <1.0 <1.0 <1.0 <3.0 <1.0 **<5.0 <1.0 NA <1.0 <1.0 NA NA <10.0 NA NA NA <5.0 <5.0 <5.0 NA <0.020 NA NA NA NA NA 8/15/2014 <100 <100 <100 <50.0 <50.0 <50.0 <50.0 ND <100 ND <1.0 <1.0 <1.0 <3.0 <1.0 <2.0 <1.0 NA <1.0 <1.0 NA NA NA NA NA NA NA NA NA NA <0.020 NA NA NA NA NA 2/17/2015 NA NA NA NA NA NA NA NA NA NA <1.0 <1.0 <1.0 <3.0 <1.0 <2.0 <1.0 <1.0 <1.0 <1.0 NA NA NA NA NA NA NA NA NA NA <0.020 NA NA NA NA NA 4/14/2009 NA NA NA NA NA NA NA NA NA NA 17 <1 3.7 13.2 <8 **<10 <1 NA NA NA NA NA NA NA <5 <5 <10 NA NA NA NA NA <1.2 1,050 45 <5,000 4/1/2010 NA NA NA NA NA NA NA NA NA NA <1 1.1 <1 1.5 <1 **<2 <1 NA NA NA NA NA NA NA NA NA <2 NA NA <1 NA NA NA NA NA NA 1/19/2011 <170 <200 <200 <30 <5 <35 <30 ND <200 ND <1 <1 <1 <1 <8 **<5 <1 NA <1 <1 NA NA <5 NA NA NA <5 <5 <5 NA <0.021 NA NA NA NA NA 2/13/2012 <95 <95 <95 <35 <35 <35 <35 ND <95 ND <0.50 <0.50 <0.50 <1.0 <0.50 **<0.78 <0.50 NA <0.50 <0.50 <0.97 <9.7 <1.1 <1.1 <0.49 <0.55 <0.78 <0.49 <1.1 NA <0.0095 NA NA NA NA NA 8/9/2012 <95 <95 <95 <35 <35 <35 <35 ND <95 ND <0.50 <0.50 <0.50 <1.0 0.58 J **<0.76 <0.50 NA <0.50 <0.50 <0.95 <9.5 <1.0 <1.0 <0.48 <0.54 <0.76 <0.48 <1.0 NA <0.0095 NA NA NA NA NA 2/14/2013 <104 <104 <104 <50.0 <50.0 <50.0 <50.0 ND <104 ND <1.0 <1.0 <1.0 <3.0 <1.0 **<5.0 <1.0 NA <1.0 <1.0 <5.0 <50.0 <10.0 <10.0 Not Reported <5.0 <5.0 <5.0 <5.0 NA <0.020 NA NA NA NA NA 8/15/2013 <100 <100 <100 <50.0 <50.0 <50.0 <50.0 ND <100 ND <1.0 <1.0 <1.0 <3.0 <1.0 **<5.0 <1.0 NA <1.0 <1.0 NA NA <10.0 NA NA NA <5.0 <5.0 <5.0 NA <0.020 NA NA NA NA NA 2/11/2014 <100 <100 <100 <50.0 <50.0 <50.0 <50.0 ND <100 ND <1.0 <1.0 <1.0 <3.0 <1.0 **<5.0 <1.0 NA <1.0 <1.0 NA NA <10.0 NA NA NA <5.0 <5.0 <5.0 NA <0.020 NA NA NA NA NA 8/15/2014 <100 <100 <100 <50.0 <50.0 <50.0 <50.0 ND <100 ND <1.0 <1.0 <1.0 <3.0 <1.0 <2.0 <1.0 NA <1.0 <1.0 NA NA NA NA NA NA NA NA NA NA <0.020 NA NA NA NA NA 2/17/2015 NA NA NA NA NA NA NA NA NA NA <1.0 <1.0 <1.0 <3.0 <1.0 <2.0 <1.0 <1.0 <1.0 <1.0 NA NA NA NA NA NA NA NA NA NA <0.020 NA NA NA NA NA 4/14/2009 NA NA NA NA NA NA NA NA NA NA 11 <1 3 9.3 <8 **<10 <1 NA NA NA NA NA NA NA <5 <5 <10 NA NA NA NA NA <1.2 665 539 <5,000 4/1/2010 NA NA NA NA NA NA NA NA NA NA <1 1.8 1.1 5.3 <1 **<2 <1 NA NA NA NA NA NA NA NA NA <2 NA NA <1 NA NA NA NA NA NA 1/19/2011 <170 <200 <200 <30 <5 <35 <30 ND <200 ND <1 <1 <1 <1 <8 **<5 <1 NA <1 <1 NA NA <5 NA NA NA <5 <5 <5 NA <0.022 NA NA NA NA NA 2/13/2012 <95 <95 <95 <35 <35 <35 <35 ND <95 ND <0.50 <0.50 <0.50 <1.0 <0.50 **<0.78 <0.50 NA <0.50 <0.50 <0.98 <9.8 <1.1 <1.1 <0.49 <0.56 <0.78 <0.49 <1.1 NA <0.0095 NA NA NA NA NA 8/9/2012 <95 <95 <95 <35 <35 <35 <35 ND <95 ND <0.50 <0.50 <0.50 <1.0 <0.50 **<0.76 <0.50 NA <0.50 <0.50 <0.95 <9.5 <1.0 <1.0 <0.48 <0.54 <0.76 <0.48 <1.0 NA <0.0097 NA NA NA NA NA 2/14/2013 <100 <100 <100 <50.0 <50.0 <50.0 <50.0 ND <100 ND <1.0 <1.0 <1.0 <3.0 <1.0 **<5.0 <1.0 NA <1.0 <1.0 <5.0 <50.0 <10.0 <10.0 Not Reported <5.0 <5.0 <5.0 <5.0 NA <0.020 NA NA NA NA NA 8/15/2013 <100 <100 <100 <50.0 <50.0 <50.0 <50.0 ND <100 ND <1.0 <1.0 <1.0 <3.0 <1.0 **<5.0 <1.0 NA <1.0 <1.0 NA NA <10.0 NA NA NA <5.0 <5.0 <5.0 NA <0.019 NA NA NA NA NA 2/11/2014 <100 <100 <100 <50.0 <50.0 <50.0 <50.0 ND <100 ND <1.0 <1.0 <1.0 <3.0 <1.0 **<5.0 <1.0 NA <1.0 <1.0 NA NA <10.0 NA NA NA <5.0 <5.0 <5.0 NA <0.020 NA NA NA NA NA 8/15/2014 <100 <100 <100 <50.0 <50.0 <50.0 <50.0 ND <100 ND <1.0 <1.0 <1.0 <3.0 <1.0 <2.0 <1.0 NA <1.0 <1.0 NA NA NA NA NA NA NA NA NA NA <0.020 NA NA NA NA NA 2/17/2015 NA NA NA NA NA NA NA NA NA NA <1.0 <1.0 <1.0 <3.0 <1.0 <2.0 <1.0 <1.0 <1.0 <1.0 NA NA NA NA NA NA NA NA NA NA <0.020 NA NA NA NA NA MW-15 MW-14 MW-12 MW-13 Page 4 of 6 Table 6 Table 3 Historical Groundwater Analytical Summary Former Tilley's Superette 1710 Union Grove Road Lenoir, North Carolina Facility ID Number 0-007680 Incident Number: 28466 EPA METHOD 504.1 C 1 1 - C 2 2 A R O M A T I C S C 1 9 - C 3 6 A L I P H A T I C S C 9 - C 1 8 A L I P H A T I C S C 5 - C 8 A L I P H A T I C S C 9 - C 1 0 A R O M A T I C S C 9 - C 1 2 A L I P H A T I C S B E N Z E N E T O L U E N E E T H Y L B E N Z E N E T O T A L X Y L E N E S M T B E N A P H T H A L E N E I S O P R O P Y L E T H E R IS O P R O P Y L B E N Z E N E 1 , 2 - D I C H L O R O B E N Z E N E 1, 4 - D I C H L O R O B E N Z E N E BE N Z Y L A L C O H O L BE N Z O I C A C I D 2, 4 - D I M E T H Y L P H E N O L 3& 4 - M E T H Y L P H E N O L 1 - M E T H Y L N A P H T H A L E N E 2 - M E T H Y L N A P H T H A L E N E N A P H T H A L E N E PH E N O L BI S ( 2 - E T H Y L H E X Y L ) P H T H A L A T E IS O P R O P Y L B E N Z E N E E D B F E R R O U S I R O N N I T R A T E WELL ID EPA METHOD 602 C 5 - C 8 H Y D R O C A R B O N C H A I N A L I P H A T I C S DATE SAMPLED C 9 - C 2 2 H Y D R O C A R B O N C H A I N A R O M A T I C S MADEP VPH S U L F A T E M E T H A N E C 9 - C 1 8 H Y D R O C A R B O N C H A I N A L I P H A T I C S MADEP EPH C 1 9 - C 3 6 H Y D R O C A R B O N C H A I N A L I P H A T I C S EPA METHOD 625 L E A D 4/14/2009 NA NA NA NA NA NA NA NA NA NA 390 15 36 195 330 **30 220 NA NA NA NA NA NA NA 13 19 30 NA NA NA NA NA <1.2 706 13 <5,000 4/1/2010 NA NA NA NA NA NA NA NA NA NA 55.1 <1 <1 1.1 53.8 **<2 28.9 NA NA NA NA NA NA NA NA NA <2 NA NA <1 NA NA NA NA NA NA 1/19/2011 <170 <200 <200 220 <5 <35 220 ND <200 ND 12 <1 <1 1.2 94 **<5 53 NA <1 <1 NA NA <5 NA NA NA <5 <5 6.8 NA <0.021 NA NA NA NA NA 2/13/2012 <95 <95 <95 175 <35 <35 175 ND <95 ND 12.4 <0.50 0.73 J 2.8 J 89.6 **<0.76 63.5 NA <0.50 <0.50 <0.95 <9.5 <1.0 <1.0 <0.48 <0.54 <0.76 <0.48 <1.0 NA <0.0095 NA NA NA NA NA 8/9/2012 <95 <95 <95 69.3 J <35 <35 69.3 J ND <95 ND 2.7 <0.50 <0.50 <1.0 46.7 **<0.78 34.3 NA <0.50 <0.50 <0.97 <9.7 <1.1 <1.1 <0.49 <0.55 <0.78 <0.49 2.8 J NA <0.0095 NA NA NA NA NA 2/14/2013 <100 <100 <100 123 <50.0 115 123 115 <100 ND 2.1 <1.0 <1.0 <3.0 28.1 **<5.0 18.9 NA <1.0 <1.0 <5.0 <50.0 <10.0 <10.0 Not Reported <5.0 <5.0 <5.0 <5.0 NA <0.021 NA NA NA NA NA 8/15/2013 <100 <100 <100 <50.0 <50.0 <50.0 <50.0 ND <100 ND 2.2 <1.0 <1.0 <3.0 19.0 **<5.0 11.9 NA <1.0 <1.0 NA NA <10.0 NA NA NA <5.0 <5.0 <5.0 NA <0.019 NA NA NA NA NA 2/12/2014 <100 <100 <100 <50.0 <50.0 <50.0 <50.0 ND <100 ND 1.1 <1.0 <1.0 <3.0 16.0 **<5.0 8.8 NA <1.0 <1.0 NA NA <10.0 NA NA NA <5.0 <5.0 <5.0 NA <0.020 NA NA NA NA NA 8/14/2014 <100 <100 <100 <50.0 <50.0 <50.0 <50.0 ND <100 ND <1.0 <1.0 <1.0 <3.0 13.5 <2.0 7.8 NA <1.0 <1.0 NA NA NA NA NA NA NA NA NA NA <0.020 NA NA NA NA NA 2/17/2015 NA NA NA NA NA NA NA NA NA NA 1.3 <1.0 <1.0 <3.0 3.4 <2.0 3.8 <1.0 <1.0 <1.0 NA NA NA NA NA NA NA NA NA NA <0.020 NA NA NA NA NA 8/19/2015 NA NA NA NA NA NA NA NA NA NA <1.0 <1.0 <1.0 <3.0 14.5 <2.0 9.7 <1.0 <1.0 <1.0 NA NA NA NA NA NA NA NA NA NA <0.020 NA NA NA NA NA 2/18/2016 NA NA NA NA NA NA NA NA NA NA <1.0 <1.0 <1.0 <3.0 <1.0 <2.0 2.0 <1.0 <1.0 <1.0 NA NA NA NA NA NA NA NA NA NA <0.019 NA NA NA NA NA 8/17/2016 NA NA NA NA NA NA NA NA NA NA 1.0 <1.0 <1.0 <3.0 4.4 <2.0 3.7 <1.0 <1.0 <1.0 NA NA NA NA NA NA NA NA NA NA <0.020 NA NA NA NA NA 2/14/2017 NA NA NA NA NA NA NA NA NA NA <1.0 <1.0 <1.0 <3.0 2.2 <2.0 2.3 <1.0 <1.0 <1.0 NA NA NA NA NA NA NA NA NA NA <0.019 NA NA NA NA NA 8/15/2017 NA NA NA NA NA NA NA NA NA NA 0.95 <0.50 <0.50 <0.50 3.5 <0.50 3.2 <0.50 <0.50 <0.50 NA NA NA NA NA NA NA NA NA NA <0.020 NA NA NA NA NA 2/19/2018 NA NA NA NA NA NA NA NA NA NA <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 1.1 <0.50 <0.50 <0.50 NA NA NA NA NA NA NA NA NA NA <0.0099 NA NA NA NA NA 4/1/2010 NA NA NA NA NA NA NA NA NA NA 5.8 2.1 1.6 9.0 <1 **<2 <1 NA NA NA NA NA NA NA NA NA <2 NA NA <1.0 <0.020 NA NA NA NA NA 1/20/2011 <170 <200 <200 <30 <5 <35 <30 ND <200 ND <1 <1 <1 <1 <8 **<5 <1 NA <1 <1 NA NA <5 NA NA NA <5 <5 <5 NA <0.022 NA NA NA NA NA 2/13/2012 <95 <95 <95 <35 <35 <35 <35 ND <95 ND <0.50 <0.50 <0.50 <1.0 0.60 J **<0.76 <0.50 NA <0.50 <0.50 <0.95 <9.5 <1.0 1.1 J <0.48 <0.54 <0.76 <0.48 <1.0 NA <0.0094 NA NA NA NA NA 8/8/2012 <95 <95 <95 <35 <35 <35 <35 ND <95 ND <0.50 <0.50 <0.50 <1.0 <0.50 **<0.76 <0.50 NA <0.50 <0.50 <0.95 <9.5 <1.0 <1.0 <0.48 <0.54 <0.76 <0.48 <1.0 NA <0.0095 NA NA NA NA NA 2/13/2013 <100 <100 <100 57.3 <50.0 <50.0 57.3 ND <100 ND <1.0 <1.0 <1.0 <3.0 <1.0 **<5.0 <1.0 NA <1.0 <1.0 <5.0 <50.0 <10.0 <10.0 Not Reported <5.0 <5.0 <5.0 <5.0 NA <0.020 NA NA NA NA NA 8/14/2013 <100 <100 <100 <50.0 <50.0 <50.0 <50.0 ND <100 ND <1.0 <1.0 <1.0 <3.0 <1.0 **<5.0 <1.0 NA <1.0 <1.0 NA NA <10.0 NA NA NA <5.0 <5.0 <5.0 NA <0.019 NA NA NA NA NA 2/11/2014 <100 <100 <100 <50.0 <50.0 <50.0 <50.0 ND <100 ND <1.0 <1.0 <1.0 <3.0 <1.0 **<5.0 <1.0 NA <1.0 <1.0 NA NA <10.0 NA NA NA <5.0 <5.0 <5.0 NA <0.020 NA NA NA NA NA 8/14/2014 <100 <100 <100 <50.0 <50.0 <50.0 <50.0 ND <100 ND <1.0 <1.0 <1.0 <3.0 5.0 <2.0 <1.0 NA <1.0 <1.0 NA NA NA NA NA NA NA NA NA NA <0.020 NA NA NA NA NA 2/17/2015 NA NA NA NA NA NA NA NA NA NA <1.0 <1.0 <1.0 <3.0 3.7 <2.0 <1.0 <1.0 <1.0 <1.0 NA NA NA NA NA NA NA NA NA NA <0.020 NA NA NA NA NA 4/1/2010 NA NA NA NA NA NA NA NA NA NA 1 1.3 <1 4.1 4.2 **<2 <1 NA NA NA NA NA NA NA NA NA <2 NA NA <1 <0.020 NA NA NA NA NA 1/20/2011 <170 <200 <200 <30 <5 <35 <30 ND <200 ND <1 <1 <1 <1 20 **<5 <1 NA <1 <1 NA NA <5 NA NA NA <5 <5 <5 NA <0.022 NA NA NA NA NA 2/13/2012 <95 <95 <95 <35 <35 <35 <35 ND <95 ND <0.50 <0.50 <0.50 <1.0 15.4 **<0.78 1.3 NA <0.50 <0.50 <0.98 <9.8 <1.1 <1.1 <0.49 <0.56 <0.78 <0.49 <1.1 NA <0.0095 NA NA NA NA NA 8/8/2012 <95 <95 <95 <35 <35 <35 <35 ND <95 ND <0.50 <0.50 <0.50 <1.0 8.0 **<0.77 0.69 J NA <0.50 <0.50 <0.96 <9.6 <1.1 <1.1 <0.48 <0.55 <0.77 <0.48 <1.1 NA <0.0094 NA NA NA NA NA 2/13/2013 <100 <100 <100 <50.0 <50.0 <50.0 <50.0 ND <100 ND <1.0 <1.0 <1.0 <3.0 2.6 **<5.1 <1.0 NA <1.0 <1.0 <5.1 <51.0 <10.2 <10.2 Not Reported <5.1 <5.1 <5.1 <5.1 NA <0.020 NA NA NA NA NA 8/14/2013 <100 <100 <100 <50.0 <50.0 <50.0 <50.0 ND <100 ND <1.0 <1.0 <1.0 <3.0 <1.0 **<5.0 <1.0 NA <1.0 <1.0 NA NA <10.0 NA NA NA <5.0 <5.0 <5.0 NA <0.019 NA NA NA NA NA 2/11/2014 <100 <100 <100 <50.0 <50.0 <50.0 <50.0 ND <100 ND <1.0 <1.0 <1.0 <3.0 <1.0 **<5.0 <1.0 NA <1.0 <1.0 NA NA <10.0 NA NA NA <5.0 <5.0 <5.0 NA <0.020 NA NA NA NA NA 8/14/2014 <100 <100 <100 <50.0 <50.0 <50.0 <50.0 ND <100 ND <1.0 <1.0 <1.0 <3.0 <1.0 <2.0 <1.0 NA <1.0 <1.0 NA NA NA NA NA NA NA NA NA NA <0.020 NA NA NA NA NA 2/17/2015 NA NA NA NA NA NA NA NA NA NA <1.0 <1.0 <1.0 <3.0 <1.0 <2.0 1.3 <1.0 <1.0 <1.0 NA NA NA NA NA NA NA NA NA NA <0.020 NA NA NA NA NA 2/18/2016 NA NA NA NA NA NA NA NA NA NA <1.0 <1.0 <1.0 <3.0 <1.0 <2.0 1.6 <1.0 <1.0 <1.0 NA NA NA NA NA NA NA NA NA NA <0.019 NA NA NA NA NA 8/17/2016 NA NA NA NA NA NA NA NA NA NA <1.0 <1.0 <1.0 <3.0 <1.0 <2.0 1.3 <1.0 <1.0 <1.0 NA NA NA NA NA NA NA NA NA NA <0.020 NA NA NA NA NA 2/14/2017 NA NA NA NA NA NA NA NA NA NA <1.0 <1.0 <1.0 <3.0 <1.0 <2.0 1.9 <1.0 <1.0 <1.0 NA NA NA NA NA NA NA NA NA NA <0.020 NA NA NA NA NA 8/15/2017 NA NA NA NA NA NA NA NA NA NA <0.50 <0.50 <0.50 <1.0 0.47 J <0.50 1.2 <0.50 <0.50 <0.50 NA NA NA NA NA NA NA NA NA NA <0.020 NA NA NA NA NA 2/19/2018 NA NA NA NA NA NA NA NA NA NA <0.50 <0.50 <0.50 <0.50 0.41 J <0.50 0.7 <0.50 <0.50 <0.50 NA NA NA NA NA NA NA NA NA NA <0.010 NA NA NA NA NA 4/1/2010 NA NA NA NA NA NA NA NA NA NA <1 <1 <1 <1 <1 **<2 <1 NA NA NA NA NA NA NA NA NA <2 NA NA <1 <0.019 NA NA NA NA NA 1/20/2011 <170 <200 <200 <30 <5 <35 <30 ND <200 ND <1 <1 <1 <1 <8 **<5 <1 NA <1 <1 NA NA <5 NA NA NA <5 <5 <5 NA <0.022 NA NA NA NA NA 2/13/2012 <95 <95 <95 <35 <35 <35 <35 ND <95 ND <0.50 <0.50 <0.50 <1.0 <0.50 **<0.77 <0.50 NA <0.50 <0.50 <0.96 <9.6 <1.1 <1.1 <0.48 <0.55 <0.77 <0.48 <1.1 NA <0.0094 NA NA NA NA NA 8/8/2012 <95 <95 <95 <35 <35 <35 <35 ND <95 ND <0.50 <0.50 <0.50 <1.0 <0.50 **<0.76 <0.50 NA <0.50 <0.50 <0.95 <9.5 <1.0 <1.0 <0.48 <0.54 <0.76 <0.48 <1.0 NA <0.0095 NA NA NA NA NA 2/13/2013 <100 <100 <100 Not Reported Not Reported Not Reported Not Reported Not Reported <100 Not Reported <1.0 <1.0 <1.0 <3.0 <1.0 **<5.0 <1.0 NA <1.0 <1.0 <5.0 <50.0 <10.0 <10.0 Not Reported <5.0 <5.0 <5.0 <5.0 NA <0.020 NA NA NA NA NA 8/14/2013 <100 <100 <100 <50.0 <50.0 <50.0 <50.0 ND <100 ND <1.0 <1.0 <1.0 <3.0 <1.0 **<5.0 <1.0 NA <1.0 <1.0 NA NA <10.0 NA NA NA <5.0 <5.0 <5.0 NA <0.019 NA NA NA NA NA 2/11/2014 <100 <100 <100 <50.0 <50.0 <50.0 <50.0 ND <100 ND <1.0 <1.0 <1.0 <3.0 <1.0 **<5.0 <1.0 NA <1.0 <1.0 NA NA <10.0 NA NA NA <5.0 <5.0 <5.0 NA <0.020 NA NA NA NA NA 8/14/2014 <100 <100 <100 <50.0 <50.0 <50.0 <50.0 ND <100 ND <1.0 <1.0 <1.0 <3.0 <1.0 <2.0 <1.0 NA <1.0 <1.0 NA NA NA NA NA NA NA NA NA NA <0.020 NA NA NA NA NA 2/17/2015 NA NA NA NA NA NA NA NA NA NA <1.0 <1.0 <1.0 <3.0 <1.0 <2.0 <1.0 <1.0 <1.0 <1.0 NA NA NA NA NA NA NA NA NA NA <0.020 NA NA NA NA NA 4/1/2010 NA NA NA NA NA NA NA NA NA NA <1 <1 <1 <1 <1 **<2 <1 NA NA NA NA NA NA NA NA NA <2 NA NA <1 <0.019 NA NA NA NA NA 1/20/2011 <170 <200 <200 <30 <5 <35 <30 ND <200 ND <1 <1 <1 <1 <8 **<5 <1 NA <1 <1 NA NA <5 NA NA NA <5 <5 <5 NA <0.022 NA NA NA NA NA 2/13/2012 <95 <95 <95 <35 <35 <35 <35 ND <95 ND <0.50 <0.50 <0.50 <1.0 <0.50 **<0.77 <0.50 NA <0.50 <0.50 <0.96 <9.6 <1.1 <1.1 <0.48 <0.55 <0.77 <0.48 <1.1 NA <0.0094 NA NA NA NA NA 8/8/2012 <95 <95 <95 42.5 J <35 <35 42.5 J ND <95 ND <0.50 <0.50 <0.50 <1.0 <0.50 **<0.78 <0.50 NA <0.50 <0.50 <0.97 <9.7 <1.1 <1.1 <0.49 <0.55 <0.78 <0.49 <1.1 NA <0.0096 NA NA NA NA NA 2/13/2013 <100 <100 <100 <50.0 <50.0 <50.0 <50.0 ND <100 ND <1.0 <1.0 <1.0 <3.0 <1.0 **<5.0 <1.0 NA <1.0 <1.0 <5.0 <50.0 <10.0 <10.0 Not Reported <5.0 <5.0 <5.0 <5.0 NA <0.020 NA NA NA NA NA 8/14/2013 <100 <100 <100 <50.0 <50.0 <50.0 <50.0 ND <100 ND <1.0 <1.0 <1.0 <3.0 <1.0 **<5.0 <1.0 NA <1.0 <1.0 NA NA <10.0 NA NA NA <5.0 <5.0 <5.0 NA <0.019 NA NA NA NA NA 2/11/2014 <100 <100 <100 <50.0 <50.0 <50.0 <50.0 ND <100 ND <1.0 <1.0 <1.0 <3.0 <1.0 **<5.0 <1.0 NA <1.0 <1.0 NA NA <10.0 NA NA NA <5.0 <5.0 <5.0 NA <0.020 NA NA NA NA NA 8/14/2014 <100 <100 <100 <50.0 <50.0 <50.0 <50.0 ND <100 ND <1.0 <1.0 <1.0 <3.0 <1.0 <2.0 <1.0 NA <1.0 <1.0 NA NA NA NA NA NA NA NA NA NA <0.020 NA NA NA NA NA 2/17/2015 NA NA NA NA NA NA NA NA NA NA <1.0 <1.0 <1.0 <3.0 <1.0 <2.0 <1.0 <1.0 <1.0 <1.0 NA NA NA NA NA NA NA NA NA NA <0.020 NA NA NA NA NA MW-18 MW-16D MW-20 MW-19 MW-17 Page 5 of 6 Table 6 Table 3 Historical Groundwater Analytical Summary Former Tilley's Superette 1710 Union Grove Road Lenoir, North Carolina Facility ID Number 0-007680 Incident Number: 28466 EPA METHOD 504.1 C 1 1 - C 2 2 A R O M A T I C S C 1 9 - C 3 6 A L I P H A T I C S C 9 - C 1 8 A L I P H A T I C S C 5 - C 8 A L I P H A T I C S C 9 - C 1 0 A R O M A T I C S C 9 - C 1 2 A L I P H A T I C S B E N Z E N E T O L U E N E E T H Y L B E N Z E N E T O T A L X Y L E N E S M T B E N A P H T H A L E N E I S O P R O P Y L E T H E R IS O P R O P Y L B E N Z E N E 1 , 2 - D I C H L O R O B E N Z E N E 1, 4 - D I C H L O R O B E N Z E N E BE N Z Y L A L C O H O L BE N Z O I C A C I D 2, 4 - D I M E T H Y L P H E N O L 3& 4 - M E T H Y L P H E N O L 1 - M E T H Y L N A P H T H A L E N E 2 - M E T H Y L N A P H T H A L E N E N A P H T H A L E N E PH E N O L BI S ( 2 - E T H Y L H E X Y L ) P H T H A L A T E IS O P R O P Y L B E N Z E N E E D B F E R R O U S I R O N N I T R A T E WELL ID EPA METHOD 602 C 5 - C 8 H Y D R O C A R B O N C H A I N A L I P H A T I C S DATE SAMPLED C 9 - C 2 2 H Y D R O C A R B O N C H A I N A R O M A T I C S MADEP VPH S U L F A T E M E T H A N E C 9 - C 1 8 H Y D R O C A R B O N C H A I N A L I P H A T I C S MADEP EPH C 1 9 - C 3 6 H Y D R O C A R B O N C H A I N A L I P H A T I C S EPA METHOD 625 L E A D PW-1 10/7/2008 <170 <200 <200 <75 <10 <55 <75 ND <200 ND <1 <1 <1 <1 <1 **<1 NA NA NA NA NA NA <5 NA <5 <5 <1 <5 <3 NA <1 <10 NA NA NA NA PW-2 2/14/2012 <95 <95 <95 <35 <35 <35 <35 ND <95 ND <0.50 <0.50 <0.50 <1.0 <0.50 **<0.76 <0.50 NA <0.50 <0.50 <0.95 <9.5 <1.0 <1.0 <0.48 <0.54 <0.76 <0.48 <1.0 NA <0.0095 NA NA NA NA NA PW-3 10/7/2008 NA NA NA NA NA NA NA NA NA NA <1 <1 <1 <1 <1 **<1 NA NA NA NA NA NA <5 NA NA NA <1 <5 <3 NA <1 NA NA NA NA NA 7/26/2010 NA NA NA NA NA NA NA NA NA NA <1 <1 <1 <1 <8 **<10 <1 NA NA NA NA NA NA NA NA NA <10 NA NA NA <1 NA NA NA NA NA 1/20/2011 <170 <200 <200 <30 <5 <35 <30 ND <200 ND <1 <1 <1 <1 <8 **<5 <1 NA <1 <1 NA NA <5 NA NA NA <5 <5 <5 NA <0.021 NA NA NA NA NA NE NE NE NE NE NE 400 700 10,000 200 1 600 600 500 20 6 70 70 20 6 700 30,000 100 NE 1 30 6 30 3 70 0.02 15 NE NE NE 250,000 NE NE NE NE NE NE NE NE NE NE 5,000 260,000 84,500 85,500 20,000 6,000 70,000 25,000 20,000 6,000 700,000 1,700,000 100,000 NE 1,000 12,500 6,000 30,000 170 25,000 50 15,000 NE NE NE NE 21. Bis-(2 ethylhexyl)phthalate, a known field sampling contaminant was detected at 5.4 ug/L in sample MW-1 on September 19, 2008, at 13 ug/L in sample MW-6 on October 7, 2008, at 6.9 ug/L and 6.8 ug/L in samples MW-12 and MW-16 on January 20 and 19, 2011 respectively. 4. GCL = Gross Contamination Level established by NCDEQ. 5. NE = Not Established. 6. NA = Not Analyzed. 1. All concentrations are in micrograms per liter (ug/L). 2. NC 2L GW Standard = Title 15A NCAC 2L .0202 Groundwater Standard, updated September 2014. 23. Groundwater samples collected on 9/19/08 were also analyzed by EPA Method 625 plus 10 Tentatively Identified Compounds (TICs) for polyaromatic hydrocarbons (PAHs). The TIC results indicated the following: MW-1 - 20 TICs were identified; the top 10 consisted of derivatives of benzene, 1-phenyl-1-butene, derivatives of ethanone and two unknowns; MW-4 - 1 TIC was identified: tetratricontane; MW-5D - 2 TICs were identified: 2-ethyl-hexanoic acid and nonanoic acid; MW-6 - 1 TIC was identified: undecane; MW-7 - 1 TIC was identified: undecane; MW-8 - 2 TICs were identified: pentatriacontane and an unknown; MW-9 - 20 TICs were identified; the top ten consisted of derivatives of benzene, toluene, ethylbenzene, and three unknowns; MW-10 - 5 TICs were identified: 4-4 tetrahydrofurane-2-one, nonanoic acid, octadecacyclonoasiloxane, and two unknowns; MW-11 - No TICs were identified; and PW-1 no TICs were identified. 15. C9-C22 hydrocarbon chain aromatics: c+d in ug/L; where c = C9 - C10 VPH aromatics and d = C11 - C22 EPH aromatics 7. MTBE = Methyl tertiary butyl ether. 8. EDB = Ethylene dibromide, 1,2-Dibromoethane. 17. C19-C36 hydrocarbon chain aliphatics: C19-C36 EPH aliphatics in ugl/L 16. C5-C8 hydrocarbon chain aliphatics: C5-C8 VPH aliphatics in ug/L 13. VPH = Volatile Petroleum Hydrocarbons: C5-C8 and C9-C12 aliphatic, and C9-C10 aromatic chain 12. EPH = Extractable Petroleum Hydrocarbons: C9-C18 and C19-C36 aliphatic chains, and C11-C22 aromatic chain 20. ** = Value reported under EPA Method 625. 19. J = estimated value between the method detection limit and the laboratory reporting limit. 14. C9-C18 hydrocarbon chain aliphatics: a+b in ug/L; where a = C9-C12 VPH aliphatics and b = C9-C18 EPH aliphatics. 10. Values in BOLD and ITALICIZED indicate levels above Gross Contamination Levels.11. Analytical table indicates target analyte concentrations reported above method detection limits. 9. Values in BOLD indicate levels above established 2L Groundwater Standards. 22. Methylene chloride, a known laboratory contaminant, was detected in sample MW-11 at a concentration of 4.7 ug/L on September 19, 2008. 18. * = Insufficient amount of water for analysis 3. "<" or ND = Not detected above method detection/laboratory reporting limit. NC 2L GW Standards PW-7 GCLs Page 6 of 6 Table 4 Free Product Recovery Information Former Tilley's Superette 1710 Union Grove Road Lenoir, North Carolina Facility ID Number 0-007680 Incident Number 28466 Date Well ID Free Product Recovery Method Product Thickness Before Recovery (Feet) Product Thickness After Recovery (Feet) Amount of Vaporized Product (Gallons) Amount of Liquid (Water and Product) (Gallons) Amount of Liquid Product (Gallons) Total Amount of Product Recovered (Gallons) 12/10/2008 MW-2 AFVR 0.53 0.00 MW-3 AFVR 0.33 0.00 3/15/2010 to MW-2 MMPE 0.00 0.00 3/19/2010 MW-3 MMPE 0.00 0.00 VE-3 MMPE 0.86 0.00 MW-1 MMPE 0.00 0.00 MW-2 MMPE 0.00 0.00 5/16/2011 to MW-3 MMPE 0.00 0.00 5/20/2011 VE-2 MMPE 0.01 0.00 VE-3 MMPE 0.03 0.00 VE-4 MMPE 0.00 0.00 11/3/2011 MW-3 AFVR 0.00 0.00 VE-1 AFVR 0.31 0.00 1/30/2012 VE-1 AFVR 0.20 0.00 VE-2 AFVR 0.27 0.00 MW-2 AFVR Sheen 0.00 5/22/2012 MW-3 AFVR Sheen 0.00 VE-3 AFVR 0.00 0.00 AFVR = Aggressive Fluid/Vapor Recovery MMPE = Mobile Multi-Phase Extraction 6.18 566 0 6.18 147.70 5,629 36 184 11/3/2011 64.76 428.83 64.76 532 190.18 Date of Recovery Event Total Volume of Free Product Recovered from Site During Current Recovery Event (Gallons) Cumulative Total Volume Recovered to Date from All Recovery Events (Gallons) 6.97 353 0 6.97 5/16/2011-5/20/2011 173.89 364.07 173.89 8,389 0 173.89 0.48 0 64.76 0.48 189 0 5/22/2012 6.97 436.28 1/30/2012 0.48 429.31 12/10/2008 6.18 6.18 3/15/2010-3/19/2010 184 Table 5 Depth to Water and Dissolved Oxygen Readings Former Tilley's Superette 1710 Union Grove Road Lenoir, North Carolina Facility ID Number 0-007680 Incident Number 28466 DTW DO DTW DO DTW DO DTW DO DTW DO DTW DO DTW DO DTW DO DTW DO DTW DO DTW DO DTW DO DTW DO DTW DO (ft below TOC)(mg/L)(ft below TOC)(mg/L)(ft below TOC)(mg/L)(ft below TOC)(mg/L)(ft below TOC)(mg/L)(ft below TOC)(mg/L)(ft below TOC)(mg/L)(ft below TOC)(mg/L)(ft below TOC)(mg/L)(ft below TOC)(mg/L)(ft below TOC)(mg/L)(ft below TOC)(mg/L)(ft below TOC)(mg/L)(ft below TOC)(mg/L) MW-1 40.90 8.11 40.20 7.69 40.08 8.68 40.22 6.29 42.26 3.22 35.12 7.92 34.62 8.71 34.99 2.02 37.36 8.40 38.27 3.93 36.21 2.09 35.68 3.23 39.77 2.09 38.45 2.06 MW-2 41.05 NR 40.38 1.46 40.14 2.82 40.21 1.49 41.98 2.26 35.23 3.53 34.68 6.03 34.58 7.15 36.92 3.01 37.68 3.97 35.87 2.37 34.86 2.92 39.58 1.76 38.48 1.66 MW-3 40.51 NR 39.88 4.12 39.59 5.46 39.52 2.53 41.91 2.07 34.91 8.29 34.28 8.97 34.50 6.01 37.03 4.91 37.92 4.04 35.96 4.32 35.16 2.26 39.39 3.32 38.16 2.64 MW-4 34.51 7.42 33.69 7.99 33.60 10.48 33.90 8.51 35.75 8.06 28.06 7.03 28.47 8.76 29.40 4.28 31.42 6.34 32.83 4.25 29.73 4.93 NM NM NM NM NM NM MW-5D 41.38 8.58 40.64 1.33 40.50 1.68 40.76 2.46 42.58 2.08 35.23 2.47 34.98 5.51 35.57 4.82 37.64 3.19 38.64 3.78 36.35 2.82 35.98 9.14 40.07 6.27 38.60 5.39 MW-6 37.33 7.21 36.39 8.37 36.33 9.74 36.58 7.17 38.66 7.71 30.78 8.43 31.02 8.72 31.76 6.62 33.91 6.62 NM NM NM NM NM NM NM NM NM NM MW-7 31.83 9.24 31.23 8.66 30.23 11.11 31.55 8.99 33.43 9.42 25.26 8.28 25.82 8.70 27.10 6.79 28.74 6.87 NM NM NM NM NM NM NM NM NM NM MW-8 35.05 9.52 34.58 8.31 34.76 10.20 35.16 7.78 36.52 9.02 29.08 8.32 29.76 9.41 30.94 6.29 32.43 7.42 NM NM NM NM NM NM NM NM NM NM MW-9 39.23 2.81 38.78 5.05 38.75 7.83 39.06 2.35 40.61 2.67 33.27 8.26 33.87 8.76 34.59 6.09 36.35 3.71 37.57 3.87 34.59 2.98 35.20 3.07 38.92 1.52 36.87 1.20 MW-10 41.53 5.83 41.13 6.60 40.80 7.58 40.84 6.60 42.53 6.93 36.18 8.22 37.59 7.38 35.07 6.91 37.81 5.67 NM NM NM NM NM NM NM NM NM NM MW-11 40.80 9.14 40.11 4.11 39.82 4.22 39.81 2.89 41.85 2.06 35.32 6.96 34.47 8.34 34.30 4.05 36.98 3.85 37.81 4.25 NM NM NM NM NM NM NM NM MW-12 39.23 5.62 39.02 8.12 39.05 6.88 39.38 4.38 40.91 2.28 33.88 8.25 34.56 8.42 35.47 3.89 37.09 1.99 38.28 4.68 35.20 3.41 36.00 3.08 39.52 2.42 37.41 2.75 MW-13 27.74 9.46 27.43 8.05 27.59 9.53 28.03 8.10 29.27 8.98 22.13 8.64 22.86 8.31 24.02 5.88 25.46 7.24 NM NM NM NM NM NM NM NM NM NM MW-14 29.59 6.57 28.96 7.10 29.15 9.24 29.64 7.77 30.98 8.24 23.57 8.78 25.43 8.29 25.47 5.81 26.95 6.56 NM NM NM NM NM NM NM NM NM NM MW-15 31.16 9.28 30.86 10.02 30.90 11.15 31.37 8.88 32.62 10.40 25.24 8.76 25.91 8.48 27.08 7.91 28.56 6.64 NM NM NM NM NM NM NM NM NM NM MW-16D 39.74 5.99 39.40 1.70 41.00 2.90 39.86 1.64 41.20 1.65 34.06 5.98 34.80 9.37 35.75 2.31 37.30 2.61 38.72 3.26 35.33 4.00 36.30 2.85 39.95 1.78 37.79 1.15 MW-17 40.66 8.52 40.38 5.48 40.37 7.38 40.63 4.98 42.08 Dry 35.86 8.85 36.56 7.50 37.13 5.21 38.68 5.64 NM NM NM NM NM NM NM NM NM NM MW-18 37.21 7.49 36.92 6.26 37.02 6.95 37.38 5.24 38.75 6.47 31.77 7.68 32.59 7.68 33.53 4.49 35.10 5.93 NM NM 33.29 7.44 34.05 7.56 37.49 6.47 35.31 4.47 MW-19 25.54 8.99 25.23 6.59 25.41 9.43 25.81 5.23 27.04 Dry 19.93 8.83 20.68 7.63 21.83 4.96 23.28 6.34 NM NM NM NM NM NM NM NM NM NM MW-20 16.11 5.67 15.89 5.62 16.04 8.96 16.42 5.40 17.54 8.01 10.53 8.90 11.54 8.76 12.43 7.32 13.85 6.40 NM NM NM NM NM NM NM NM NM NM TOC = top of casing NR = not recorded (sheen observed) NM = not measured 2/13/2013 Well ID 5/7/2012 6/6/2012 7/9/2012 8/8/2012 8/17/2016 2/14/2017 8/15/20178/14/2013 2/11/2014 8/14/2014 2/17-18/2015 8/19/2015 2/18/2016 Date Cross-Sectional Area of Pipe Conversion Factor3 Days of Operation Cumulative Recovery (ft2) (lb-m3/mg-ft3)(lb/hr) (lb/day) (days) (lbs) 06/20/12 0.08700 2,982 259.4 835.9 0.00000006243 0.8123 19.50 57.00 1,111 09/19/12 0.08700 3,433 298.7 367.0 0.00000006243 0.4106 9.85 91.00 2,008 12/19/12 * 0.08700 3,433 298.7 305.0 0.00000006243 0.3412 8.189 91.00 2,753 03/20/13 0.08700 2,260 196.6 90.50 0.00000006243 0.06665 1.600 91.00 2,899 06/26/13 0.08700 828.0 72.04 101.9 0.00000006243 0.02750 0.6599 98.00 2,963 09/28/13 * 0.08700 828.0 72.04 25.10 0.00000006243 0.006773 0.1625 94.00 2,979 12/30/13 * 0.08700 564.0 49.07 140.10 0.00000006243 0.02575 0.6180 93.00 3,036 03/11/14 * 0.08700 465.0 40.46 76.14 0.00000006243 0.01154 0.2769 71.00 3,056 06/17/14 0.08700 545.0 47.42 60.28 0.00000006243 0.01071 0.2569 98.00 3,081 09/08/14 0.08700 512.0 44.54 24.30 0.00000006243 0.004055 0.09731 83.00 3,089 01/07/15 0.08700 488.0 42.46 82.30 0.00000006243 0.01309 0.3141 121.0 3,127 03/04/15 0.08700 498.0 43.33 91.51 0.00000006243 0.01485 0.3564 56.00 3,147 06/18/15 0.08700 521.0 45.33 6.07 0.00000006243 0.001031 0.02473 106.0 3,150 10/29/15 0.08700 530.0 46.11 205.6 0.00000006243 0.03551 0.8523 133.0 3,263 12/22/15 * 0.08700 530.0 46.11 111.0 0.00000006243 0.01917 0.4601 54.00 3,288 03/31/16 0.08700 534.0 46.46 49.5 0.00000006243 0.00861 0.2065 100.00 3,309 06/29/16 0.08700 592.0 51.50 65.6 0.00000006243 0.01265 0.3035 90.00 3,336 09/29/16 0.08700 430.0 37.41 71.6 0.00000006243 0.01003 0.2408 92.00 3,358 12/06/16 0.08700 544.0 47.33 55.3 0.00000006243 0.0098 0.2353 68.00 3,374 03/27/17 0.08700 501.0 43.59 45.8 0.00000006243 0.00748 0.1795 111.00 3,394 06/20/17 0.08700 562.0 48.89 92.0 0.00000006243 0.01685 0.4044 55.00 3,416 09/13/17 0.08700 482.0 41.93 64.8 0.00000006243 0.01018 0.2443 85.0 3,437 12/28/17 0.08700 505.0 43.94 11.4 0.00000006243 0.00188 0.0450 106.0 3,442 Notes: * Influent velocity inferred; reading not collected due to water in line Facility ID Number 0-007680 Table 6 SVE System Cumulative Recovery Former Tilley's Superette 1710 Union Grove Road Lenoir, North Carolina 2. Total BTEX concentrations in influent air are based on EPA Method 18 laboratory data 3. Conversion factor to convert units of concentration from mg/m3 to lb/ft3 4. Mass removal rate = (air flow rate) x (total BTEX) x (conversion factor) x (60 min/hr or 1,440 min/day) Incident Number 28466 Influent Velocity (ft/min) Air Flow Rate1 (ft3/min) Total BTEX2 (mg/m3) Mass Removal Rate4 1. Air flow rate = (cross-sectional area) x (influent velocity) FIGURES SITE CAD FILE PREP. BYTYPE CODE REV. BY SCALE PROJECT NO. TITLE DATE TI T L E PR O J E C T N O . NO T E S : DA T E TI T L E SC A L E RE V . B Y PR E P . B Y CA D F I L E TI T L E PR O J E C T N O . NO T E S : DA T E SC A L E RE V . B Y PR E P . B Y CA D F I L E