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Home My WebLink AboutWI-1905_22460_CA_MRP_20220106 January 6, 2022 Mr. Steve Kay North Carolina Department of Environmental Quality Division of Waste Management Underground Storage Tank Section 127 Cardinal Drive Extension Wilmington, North Carolina RE: GROUNDWATER MONITORING REPORT GPM 3181 (SCOTCHMAN #181) 5200 CAROLINA BEACH ROAD WILMINGTON, NEW HANOVER COUNTY, NORTH CAROLINA INCIDENT NO. 22460 Dear Mr. Kay: On behalf of GPM Southeast, LLC, CES of NC, PLLC is providing the enclosed Groundwater Monitoring Report for the above referenced site. If you have any questions, please contact us at (540)-343-6256. Sincerely, CES of NC, PLLC Daniel J. Fisher, PMP Allison E. Streams Director of Mid-Atlantic Operations Project Manager CC: Mr. Rolfe Lann, GPM Southeast, LLC GROUNDWATER MONITORING REPORT GPM 3181 (SCOTCHMAN #181) WILMINGTON, NORTH CAROLINA INCIDENT # 22460 GPM 3181 (Former Scotchman #181) GROUNDWATER MONITORING REPORT OCTOBER 2021 GPM 3181 (SCOTCHMAN #3181) 5302 CAROLINA BEACH ROAD WILMINGTON, NORTH CAROLINA FACILITY ID: 0-020306 UST INCIDENT NO.: 22460 CES OF NC, PLLC PROJECT NUMBER: 9.0898 JANUARY 6, 2022 PREPARED BY: CES OF NC, PLLC 5104 Reagan Drive, Suite 7 Charlotte, NC 28206 Phone: 980-819-9333; Fax: 540-343-6259 PREPARED FOR: GPM SOUTHEAST, LLC Mr. Rolfe Lann Vice President of Environmental 8565 Magellan Parkway, Suite 400 Richmond, Virginia 23227 NORTH CAROLINA DEPARTMENT OF ENVIRONMENTAL QUALITY Mr. Steve Kay Division of Waste Management Underground Storage Tank Section 127 Cardinal Drive Extension Wilmington, North Carolina 28405 GROUNDWATER MONITORING REPORT GPM 3181 (SCOTCHMAN #181) WILMINGTON, NORTH CAROLINA INCIDENT # 22460 GPM 3181 (SCOTCHMAN #181): GROUNDWATER MONITORING REPORT i Groundwater Monitoring Report SITE INFORMATION Site Identification Date of Report: January 6, 2022 Site Name: GPM 3181 (aka Scotchman #3181) 5302 Carolina Beach Road Wilmington, New Hanover County, North Carolina Facility I.D.: 0-020306 UST Incident Number: 22460 Risk Rank: High (H195D) Latitude: 34.142398N Longitude:-77.896205W Source: Google Maps Site Contact Information UST Owner and Operator: GPM Southeast, LLC 8565 Magellan Parkway, Suite 400 Richmond, VA 23227 +1 804 730 1568 Property Property Owner: RILP NC2 LP Occupant: Scotchman #3181 11995 El Camino Real 5302 Carolina Beach Road San Diego, CA 92130 Wilmington, NC 28403 +1 910 791-7596 Consultant: CES of NC, PLLC State 5104 Reagan Drive, Suite 7 License No. C-550 Charlotte, NC 28206 +1 980 819 9333 Analytical State Laboratory: Pace Analytical Services, LLC Certification No. 329 Address: 106 Vantage Point Drive West Columbia, SC 29172 +1 803 791-9700 Release Information Date Discovered: October 2000 Estimated Quantity of Release: Unknown Cause of Release: UST System Source of Release: One 6,000-gallon gasoline UST Current UST Information: - Two 6,000-gallon gasoline USTs - One 3,000-gallon kerosene UST GROUNDWATER MONITORING REPORT GPM 3181 (SCOTCHMAN #181) WILMINGTON, NORTH CAROLINA INCIDENT # 22460 GPM 3181 (SCOTCHMAN #181): GROUNDWATER MONITORING REPORT ii EXECUTIVE SUMMARY As required, the following executive summary provides the most pertinent information for this assessment. For additional information please refer to subsequent sections of this report.  CES of NC, PLLC (CES) was retained by GPM Southeast, LLC (GPM) to complete three (3) monthly free product recovery events followed by a limited groundwater monitoring event in November 2021. The activities were directed in a “Review of Monitoring Report” correspondence dated July 27, 2021 issued by the North Carolina Department of Environmental Quality (NCDEQ). The services were provided in general accordance with the NCDEQ UST Section “Assessment Guidelines” and “Corrective Action Guidelines” under approved task authorization 22460-40.  Two (2) different releases have been discovered on-site. NCDEQ Incident Number 7053 was discovered on August 7, 1991, when a site investigation was conducted prior to the in-place abandonment of one of the active Underground Storage Tanks (USTs). NCDEQ Incident Number 22460 was discovered on October 18, 2000 when a gasoline dispenser handle malfunctioned during a routine calibration. During the investigation of the issue free product was discovered in the vault beneath the dispenser. The associated contaminant plumes are believed to be commingled and NCDEQ Incident Number 22460 utilizes monitoring wells associated with Incident Number 7053.  CES personnel visited the site on October 28, 2021 for completion of a limited groundwater monitoring event. Five (5) monitoring wells were gauged for depth to water/product and sampled.  Free product was not encountered during the October 2021 event; however, groundwater samples collected from site monitoring wells indicated groundwater impacts above regulatory standards.  Groundwater flow direction was interpreted to trend towards the north.  Potential receptors include several supply wells used for potable water and a surface water feature identified as Mott Creek. The receptor survey revealed that although the area is serviced by municipal water, supply wells are present in the vicinity with some providing potable water. Mott Creek is located approximately 500 feet down gradient of the source area.  In conclusion, a plume stability analysis may be warranted to confirm contaminant trend data as a route to incident closure. Once the contamination is determined to not pose a significant threat to receptors, the incident should be considered for restrictive closure under a Notice of Residual Petroleum with appropriate land use restrictions. GROUNDWATER MONITORING REPORT GPM 3181 (SCOTCHMAN #181) WILMINGTON, NORTH CAROLINA INCIDENT # 22460 GPM 3181 (SCOTCHMAN #181): GROUNDWATER MONITORING REPORT iii TABLE OF CONTENTS Site Information ............................................................................................................................................. i Executive Summary .................................................................................................................................... ii Table of Contents ......................................................................................................................................... iii List of Figures .............................................................................................................................................. iii List of Tables ............................................................................................................................................... iv List of Appendices ....................................................................................................................................... iv 1.0 Introduction ..................................................................................................................................... 1 2.0 Site History and Characterization ................................................................................................ 1 2.1 UST System Information .............................................................................................................. 1 2.2 Site Location ................................................................................................................................. 1 2.3 Site History ................................................................................................................................... 1 3.0 Potential Receptor Information ....................................................................................................... 4 3.1 Water Supply Wells ...................................................................................................................... 4 3.2 Public Water Supplies ................................................................................................................... 5 3.3 Surface Water ................................................................................................................................ 5 3.4 Wellhead Protection Area ............................................................................................................. 5 3.5 Surrounding Land Use .................................................................................................................. 5 3.6 Subsurface Structures .................................................................................................................... 5 3.7 Deep Aquifers in the Atlantic Coastal Plain Province .................................................................. 5 4.0 Recent Activities ............................................................................................................................. 6 4.1 Free Product Recovery Efforts ...................................................................................................... 6 4.2 Groundwater Sampling ................................................................................................................. 7 4.3 Groundwater Occurrence and Flow Direction .............................................................................. 7 4.4 Laboratory Results ........................................................................................................................ 7 4.5 Estimated Extent of Contamination .............................................................................................. 7 5.0 Conclusions and Recommendations ............................................................................................... 8 5.1 Conclusions ................................................................................................................................... 8 5.2 Recommendations ......................................................................................................................... 8 6.0 Statements and Certification ............................................................................................................ 9 7.0 Remarks ........................................................................................................................................ 10 LIST OF FIGURES Figure 1 Site Location Map Figure 2 Site Map Figure 3 Site Area Map Figure 4 Potentiometric Map (10/28/2021) Figure 5 Groundwater Analytical Results Map Figure 6A Benzene Isoconcentration Map (10/28/2021) Figure 6B Toluene Isoconcentration Map (10/28/2021 Figure 6C Ethylbenzene Isoconcentration Map (10/28/2021) Figure 6D Xylenes Isoconcentration Map (10/28/2021) GROUNDWATER MONITORING REPORT GPM 3181 (SCOTCHMAN #181) WILMINGTON, NORTH CAROLINA INCIDENT # 22460 GPM 3181 (SCOTCHMAN #181): GROUNDWATER MONITORING REPORT iv LIST OF TABLES Table 1 UST System and Other Release Information Table 2 UST System Owner/Operator Information Table 3 Summary of Receptor Data Table 4 Summary of Well Construction Data Table 5 Groundwater Elevation Data Table 6 Groundwater Analytical Data LIST OF APPENDICES Appendix A Historical Soil Sampling Data Appendix B Pre-Approval Task Authorization and Relevant Correspondence Appendix C Groundwater Sampling Logs Appendix D Laboratory Reports and Chain of Custody Documentation GROUNDWATER MONITORING REPORT GPM 3181 (SCOTCHMAN #181) WILMINGTON, NORTH CAROLINA INCIDENT # 22460 GPM 3181 (SCOTCHMAN #181): GROUNDWATER MONITORING REPORT 1 1.0 INTRODUCTION The purpose of this report is to provide the details of the groundwater monitoring activities associated with two (2) different releases associated with the underground storage tanks (UST) system at the GPM 3181, also known as Scotchman #181, facility located at 5302 Carolina Beach Road, in Wilmington, North Carolina (site). A topographic map illustrating the site location is included as Figure 1. The first release was reported to the North Carolina Department of Environmental Quality (NCDEQ) on August 7, 1991, when a site investigation was conducted prior to the in-place abandonment of one of the active USTs. NCDEQ Incident Number 22460 was discovered on October 18, 2000, when a gasoline dispenser handle malfunctioned during a routine calibration. In correspondence dated July 27, 2021, the NCDEQ directed the responsible party, GPM Southeast, LLC (GPM), to proceed with assessment and remediation activities as recommended in the May 26, 2021 Annual Groundwater Monitoring Report. GPM retained CES of NC, PLLC (CES) for environmental consulting services. The activities were provided in general accordance with the NCDEQ UST Section “Assessment Guidelines” and “Corrective Action Guidelines”. 2.0 SITE HISTORY AND CHARACTERIZATION The site has operated a UST system since at least 1971. Historical UST system information and owner/operator and other responsible party information is provided in Table 1 and Table 2. As required, the following provides information relevant to site history and characterization. 2.1 UST SYSTEM INFORMATION The current UST system consists of three (3) single-wall steel tanks. Two (2) 6,000-gallon USTs contain gasoline and one (1) 3,000-gallon UST contains kerosene. The gasoline tank pit is located in the northeast area of the site as shown in Figure 2. There are two (2) pump islands, one (1) under the northwest end of the canopy and one (1) under the southeast end of the canopy, with a single double-sided dispenser unit on each island. The gasoline USTs appear to be oriented in a general northwest to southeast direction. The kerosene tank pit and dispenser is located along the northwest side of the building. The kerosene UST appears to be oriented parallel to the building. 2.2 SITE LOCATION The site is located at 5302 Carolina Beach Road, Wilmington, New Hanover County, North Carolina. Figure 1 is a topographic vicinity map of the surrounding area and Figure 2 is a site map depicting pertinent structures. The property is owned by RILP NC2 LP and is operated by GPM Southeast, LLC as a convenience store and retail fuel outlet. 2.3 SITE HISTORY The property formerly operated as Crown Central Marketing Corporation (Crown) Fast Fare NC-721 convenience store and retail fuel outlet. The NCDEQ assigned Incident Number 7053 to release(s) that occurred during Crown ownership. The Incident Number 22460 was assigned to release(s) that occurred during ownership by Worsley Companies, Inc. (Worsley). The associated contaminant plumes are believed to be commingled and NCDEQ Incident Number 22460 utilizes monitoring wells associated with Incident Number 7053. The history of the site’s former underground storage tanks (USTs) is summarized in Table 1 and UST owner/operator information is summarized in Table 2. Historical soil sampling data is included in Appendix A. GROUNDWATER MONITORING REPORT GPM 3181 (SCOTCHMAN #181) WILMINGTON, NORTH CAROLINA INCIDENT # 22460 GPM 3181 (SCOTCHMAN #181): GROUNDWATER MONITORING REPORT 2 NCDEQ Incident Number 7053 On August 7 and 8, 1991, Applied Environmental Services, Inc. (AES) conducted a site investigation prior to the in- place abandonment of one of the 4,000-gallon gasoline USTs. The site investigation involved the advancement of two (2) soil borings and the installation of four (4) monitoring wells (i.e. MW-1 through MW-4). Investigation results were provided by AES in a Site Investigation Report, dated October 4, 1991. Two soil samples collected from the soil borings were found to contain total petroleum hydrocarbon concentrations of 11,000 parts per million (ppm) and 15,000 ppm. Based upon findings of the Site Investigation Report, a Comprehensive Site Assessment (CSA) was initiated on June 9, 1992 with the advancement of two (2) additional soil borings and the installation of three (3) groundwater monitoring wells (i.e. MW-5 through MW-7). AES submitted results of the assessment in a CSA Report dated October 27, 1992. On July 12, 1993, WEA, Inc. supervised the removal of all four 4,000-gallon steel gasoline USTs. Approximately 465 tons of contaminated soil were excavated and transported off site for proper disposal. The remaining soils were determined to be below the Site Sensitivity Evaluation limits for this site. WEA, Inc. summarized results of the closure activities in an Assessment of Underground Storage Tanks and Closure Report, dated August 16, 1993. Agra Environmental, Inc. (Agra) submitted a Corrective Action Plan (CAP) dated September 10, 1993. The CAP recommended the use of a “total fluids” recovery system to remediate the groundwater. However, documents regarding system installation and operation have not been discovered. Around October 1996, Worsley purchased the property and UST systems (i.e. two 6,000-gallon gasoline UST’s and one 3,000-gallon kerosene UST) from Crown. However, Crown remained the responsible party for the NCDEQ Incident Number 7053 and continued required assessment activities. A Notice of Regulatory Requirements (NORR) dated November 29, 1999, required Crown to conduct a CSA Addendum. The CSA Addendum work was conducted in March 2000 with the installation of three groundwater monitoring wells (i.e. MW-9, MW-10, and MW-11D). Agra submitted results of the additional assessment work in a CSA Addendum Report dated March 29, 2000. On October 11, 2000, four additional groundwater monitoring wells (i.e. MW-12 through MW-15) were installed and subsequently sampled by Agra. The results of the additional assessment were provided by Agra in a Groundwater Monitoring Report dated On November 17, 2000. NCDEQ Incident Number 22460 On October 4, 1996, a 6,000-gallon unleaded gasoline UST failed a tank tightness test. Worsley contracted Clark Environmental Services, P.C. (Clark) to perform assessment activities. Clark collected groundwater samples from existing monitoring wells MW-1 and MW-2 and provided the results in a Subsurface Petroleum Detection Summary Report, dated February 16, 1999. Results of these assessment activities indicated that petroleum contamination was not present in the groundwater samples at levels above laboratory detection limits. On October 18, 2000, the easternmost gasoline dispenser pump handle malfunctioned during a routine calibration by Agriculture Insurance personnel. Worsley contracted Delta Environmental Consultants, Inc. (Delta) to investigate the issue. Inspections revealed the vault beneath the dispenser contained free product. On October 20, 2000, a 24-Hour Release Notification Form was submitted to the NCDEQ. Assessment activities related to the discovery of free product was required in a NORR, dated October 25, 2000. GROUNDWATER MONITORING REPORT GPM 3181 (SCOTCHMAN #181) WILMINGTON, NORTH CAROLINA INCIDENT # 22460 GPM 3181 (SCOTCHMAN #181): GROUNDWATER MONITORING REPORT 3 On November 9, 2000, Delta personnel measured 0.54 feet of free phase product in monitoring well MW- 13. Subsequently, Delta conducted aggressive fluid/vapor recovery (AFVR) events on monitoring well MW-13 in November and December 2000, September and November 2001 and July 2002. Delta submitted Free Product Recovery Reports providing details regarding these activities on May 7, 2001, November 6, 2001, November 13, 2001 and August 8, 2002. The AFVR events reportedly recovered a total of 45 gallons of free product. On February 14, 2001, a 6,000-gallon unleaded gasoline UST failed a tank tightness test. In a NORR dated February 27, 2001, the NCDEQ required completion of additional assessment activities with respect to the failed tank tightness test. On July 24, 2001, Delta initiated assessment activities with the installation of three (3) Type II (i.e. SMMW-1 through SMMW-3) and one (1) Type III (SMDW-1) monitoring wells. The results were summarized in a Phase II Limited Site Assessment Report dated September 28, 2001. The report concluded the source of product in monitoring well MW-13 was the result of release(s) from the current UST systems. In a NORR dated December 13, 2001, the NCDEQ required completion of a CSA. The NORR also established a rank of High priority due to the presence of water supply wells in the vicinity and a land use of residential. The CSA activities included the advancement of ten soil borings (i.e. SB-1 through SB-7, SMMW-5, SMMW-6 and SMMW-8) and the installation of five Type II groundwater monitoring wells (i.e. SMMW-4 through SMMW-9). The CSA Report, prepared by Delta and dated April 26, 2002, provided results of soil and groundwater sampling activities. Following NCDEQ approval of the CSA Report, Delta prepared a CAP, dated September 30, 2002, which recommended the installation and operation of soil vapor extraction (SVE) and air sparging (AS) systems. The CAP was approved by NCDEQ in December 2002. In April 2003, Worsley transferred all environmental services for the site to SEI Environmental, Inc. and SEI Engineering and Geological Services, P.C. (SEI). Although SEI prepared bid packages for the SVE and AS systems, the bids were never awarded, and systems were never installed due to revaluation of the site by the NCDEQ. In correspondence dated, December 2003, the NCDEQ requested completion of an updated receptor survey and implementation of a mobile multi-phase extraction (MMPE) event. The correspondence also requested routine natural attenuation monitoring. Results of the groundwater sampling event and updated receptor survey were provided by SEI in a Groundwater Monitoring Report, dated February 27, 2004. The report identified the presence of three water supply wells used for drinking purposes and one water supply well used for non-drinking purposes located within 1,000 feet of the site. During the week of January 29 through February 2, 2004, SEI performed a MMPE event at the site. The results of the MMPE event along with the results of a groundwater sampling event, conducted on June 23, 2004, were provided in a Free Product Recovery and Groundwater Monitoring Report, dated July 13, 2004. The report indicated 8,687 gallons of groundwater was recovered and 86 pounds of petroleum as emissions were discharged. On August 18, 2004, SEI performed another groundwater sampling event with results provided in a Groundwater Monitoring Report, dated September 30, 2004. Environmental Services & Solutions, PLLC (ESS) conducted site activities between March 2006 and January 2014 which included product recovery activities and groundwater sampling. ESS prepared Monitoring Reports, dated May 1, 2007, November 12, 2007, May 12, 2008, December 5, 2008, September 11, 2009, April 15, 2010, October 8, 2010, February 1, 2012, October 3, 2012, March 6, 2013, and GROUNDWATER MONITORING REPORT GPM 3181 (SCOTCHMAN #181) WILMINGTON, NORTH CAROLINA INCIDENT # 22460 GPM 3181 (SCOTCHMAN #181): GROUNDWATER MONITORING REPORT 4 September 6, 2013, as well as Free Product Recovery Reports, dated December 2, 2009, July 2, 2010, November 15, 2010, and July 21, 2011. A Notice of Residual Petroleum with soil and groundwater restrictions for the site was filed with the New Hanover County Register of Deeds on February 25, 2008, in Book 5282, Pages 2156-2171. In correspondence dated September 18, 2013, the NCDEQ concurred with ESS recommendations to continue product recovery when necessary and perform semi-annual groundwater sampling. ESS conducted an AFVR in December 2013 and maintenance of absorbent booms in January 2014. Antea USA of North Carolina, Inc. (Antea) conducted a groundwater sampling event on November 4, 2014 and reported the sampling results and ESS free product recovery efforts in a Monitoring Report dated May 12, 2015 CES of NC, PLLC (CES) conducted a groundwater sampling event on November 28, 2017 and reported the sampling results in a Monitoring Report dated April 20, 2018. Monitoring well MW-11 was installed in March of 2018 associated with site check activities. Most recently, CES conducted a limited groundwater sampling event in March of 2021 and installed in-situ chemical oxidation cylinders in the source area wells. The sampling results, presented in an Annual Groundwater Monitoring Report dated, May 26, 2021, indicated benzene, toluene, ethylbenzene, xylenes, and naphthalene at concentrations above 2L Standards. Historically free product has sporadically been reported in monitoring well MW-13. 3.0 POTENTIAL RECEPTOR INFORMATION Delta completed a receptor survey as part of LSA activities and SEI performed an updated receptor survey in January 2004. SEI identified four (4) water supply wells located within 1,000 feet of the site of which three (3) were reportedly used for drinking water. The results were provided in a Groundwater Monitoring Report, dated February 27, 2004. Upon approval by the NCDEQ, the receptor survey was updated by ESS on May 23, 2012. The receptor survey included the completion of Water Supply Well Information Survey forms, field observations, conversations with the NCDEQ and the Cape Fear Public Utility Authority (CFPUA), and collection of information through New Hanover County. A summary of receptor information is provided in Table 3. 3.1 WATER SUPPLY WELLS Six (6) water supply wells were identified or confirmed by ESS located within or near a 1,000-foot radius of the source area. • Three (3) of the six (6) water supply wells (#2, #5, and #6) serve as the sole source of potable water. One (1) of these three (3) wells, located at 5310 Carolina Beach Road and approximately 475 feet from the source area, is permitted by the NCDEQ (PWS#7065018). • One (1) of the six (6) water supply wells located approximately 760 feet from the source area (#4) is used for irrigation and non-potable purposes. • Two (2) of the six (6) water supply wells are no longer in-use or are defunct (#1 and #3). • Two (2) additional wells, #7 and #8, were identified by ESS and located approximately 1,000 and 1,600 feet of the source area, respectively. Reportedly, WSW-7 is for potable use and WSW-8 is for non- potable use. GROUNDWATER MONITORING REPORT GPM 3181 (SCOTCHMAN #181) WILMINGTON, NORTH CAROLINA INCIDENT # 22460 GPM 3181 (SCOTCHMAN #181): GROUNDWATER MONITORING REPORT 5 A list of potential receptors based on historical sources is presented on Table 3 and illustrated on Figure 3. Four (4) water supply wells were historically identified by others as providing potable water within 1,000 feet of the source area. Three (3) of those wells were also confirmed by ESS as currently providing potable water. The fourth, located nearest the source area identified as #1 in Table 3, appears to have been destroyed following property reconstruction (i.e. an automotive parts store). 3.2 PUBLIC WATER SUPPLIES Municipal water from the CFPUA is available to all properties within 1,500 feet of the source area. The nearest CFPUA production well is located within the Royal Palms Mobile Home Park (CFPUA Well #51), which is located greater than 1,500 feet west/northwest. 3.3 SURFACE WATER The closest surface water body to the site is Mott Creek located approximately 500 feet north of the site. Numerous storm water retention ponds are present within 1,500 feet of the source area. 3.4 WELLHEAD PROTECTION AREA The site is reportedly not located within an approved wellhead protection area as defined by 42 USC 300h- 7(e). 3.5 SURROUNDING LAND USE Planning zones along the Carolina Beach Road and South College Road corridors and within the vicinity of the site generally consists of Highway Business (B-1 and B-2), Conditional Use Highway Business (B- 2 CD), and Office and Institutional (O&I). Further from the business corridors lie properties zoned as Residential (R-15 and R-10). The site is zoned B-2. 3.6 SUBSURFACE STRUCTURES Storm water flow at the site is routed to ditches within the North Carolina Department of Transportation (NCDOT) right-of-way of Carolina Beach Road. Municipal water and sewer lines are located within the Antoinette Drive, Carolina Beach Road, and South College Road rights-of-way. 3.7 DEEP AQUIFERS IN THE ATLANTIC COASTAL PLAIN PROVINCE The site is located within the Tidewater region of the Atlantic Coastal Plain Province. The first four aquifers that lie within New Hanover County, in descending order, include:  Surficial aquifer comprised of Pleistocene and Pliocene age sediments;  Castle Hayne confining unit and aquifer with sediments generally of Eocene age;  Peedee confining unit and aquifer which is comprised of Late Cretaceous age sediments, and  Black Creek confining unit and aquifer which is comprised of Late Cretaceous age sediments. Surficial aquifer sediments in the Tidewater region were deposited under shallow marine or estuarine conditions. These consist of fine sand, silt, clay, shell, peat beds, and scattered deposits of coarser-grained material in the form of relic beach ridges and floodplain alluvium. The aquifer is composed of 79 percent permeable material and has an estimated hydraulic conductivity of 35 feet per day. The surficial aquifer is approximately 63 thick in the vicinity of the site. The underlying Castle Hayne confining unit is composed of beds of clay, sandy clay, and clay with sandy streaks. Throughout much of New Hanover County, the Castle Hayne confining unit is thin, with an average thickness of about 14 feet, and contains enough sand to allow significant vertical movement between the GROUNDWATER MONITORING REPORT GPM 3181 (SCOTCHMAN #181) WILMINGTON, NORTH CAROLINA INCIDENT # 22460 GPM 3181 (SCOTCHMAN #181): GROUNDWATER MONITORING REPORT 6 surficial aquifer and the underlying Castle Hayne aquifer. The Castle Hayne confining unit is 17 feet thick in the vicinity of the site. The Castle Hayne aquifer is predominantly composed of limestone (including shell, dolomitic, and sandy limestone ranging from loosely consolidated to hard/crystallized) and sand with minor amounts of clay. Sand bed intervals have varying carbonate content and range from fine to coarse-grained. Clay occurs as marl beds less than 10 feet thick or as a matrix in both sand and limestone beds. The upper portion of the Castle Hayne aquifer typically consists of limestone and the lower portion consists of unconsolidated sand. The Castle Hayne aquifer is approximately 26 feet thick in the vicinity of the site. The aquifer contains approximately 90 percent permeable material. The estimated hydraulic conductivity is 25 feet per day. The Peedee confining unit is overlain by the Castle Hayne aquifer in New Hanover County. The Peedee confining unit is approximately 19 feet thick in the vicinity of the site and consists of clay, silty clay and sandy clay and represents the Cenozoic-Mesozoic geological boundary. The underlying Peedee aquifer is approximately 355 feet thick at the site and has an estimated hydraulic conductivity of 65 feet per day. Sediments of the Peedee Formation consist of fine to medium-grained sand interbedded with gray to black marine clay and silt. Glauconitic sand beds and thin beds of consolidated sandstone and impure limestone are interlayered in the sands. The Black Creek confining unit is overlain by the Peedee aquifer. The Black Creek confining unit is reportedly 80 feet thick at the site and contains sediments having less than 12 percent permeability. The Black Creek aquifer, overlain by the Black Creek confining unit, has a thickness of 156 feet and an estimated hydraulic conductivity of 25 feet per day. References: Hydrogeologic Framework of the North Carolina Atlantic Coastal Plain, U.S. Geological Survey Professional Paper 1404-I, M.D. Winner, Jr. and R.W. Coble, 1996. Open File Report 2006-1298, Selected Well Data Used in Determining Groundwater Availability in the North and South Carolina Atlantic Coastal Plain Aquifer Systems, U.S. Geological Survey, Larry G. Harrelson and Jason M. Fine, 2006, Hydrogeologic Framework and Groundwater Conditions in the North Carolina Southern Coastal Plain, NCDENR Division of Water Resources, Jeff C. Lautier, March 2006, and, North Carolina Department of Environmental Resources, Division of Water Resources, Hydrogeologic Framework Database. 4.0 RECENT ACTIVITIES CES has performed the following assessment and remediation activities in accordance with the NCDEQ approved pre-approval task authorization (PATA) 22460-41. Copies of the approved PATA and relevant correspondence are included in Appendix B. 4.1 FREE PRODUCT RECOVERY EFFORTS CES visited the site for sorbent sock maintenance in monitoring well MW-13 on the following dates:  September 10, 2021,  October 6, 2021, and  October 28, 2021. Free Product was not detected in MW-13 during any of the free product recovery events. GROUNDWATER MONITORING REPORT GPM 3181 (SCOTCHMAN #181) WILMINGTON, NORTH CAROLINA INCIDENT # 22460 GPM 3181 (SCOTCHMAN #181): GROUNDWATER MONITORING REPORT 7 4.2 GROUNDWATER SAMPLING On October 28, 2021, CES personnel mobilized to the site to perform a limited groundwater sampling event utilizing monitoring wells MW-11, MW-12, MW-13, SMMW-7, and RW-1. The monitoring wells were located, accessed, and gauged for equilibrated depth to water/depth to product using an electronic oil/water interface probe. Free product was not detected during the October 2021 event. A summary of well construction data is included in Table 4. Following gauging, each monitoring well selected for sampling was purged of at least three well volumes, or until dry, using dedicated bailers. To reduce the potential of cross contamination, dedicated disposable nitrile gloves were used during all phases of sample handling. Groundwater sampling logs indicating purge volumes, sample times, and physical parameters recorded at the time of sampling by a water quality multi- parameter meter are included in Appendix C. Samples were placed into laboratory supplied containers pre-filled with appropriate preservatives, labeled with indelible ink, entered into chain-of-custody, and placed on wet ice in a pre-chilled cooler maintained at approximately 4 degrees Celsius pending submittal to an independent accredited laboratory. The samples were transported under standard chain-of-custody protocol to Pace Analytical Services, LLC (Pace) located in West Columbia, SC, a North Carolina certified laboratory (#329), for chemical analysis. The samples were analyzed for volatile organic compounds (VOCs) by Standard Methods 6200B. 4.3 GROUNDWATER OCCURRENCE AND FLOW DIRECTION Measured depth to groundwater in the gauged monitoring wells ranged from 4.30-feet (RW-1) to 5.11-feet (SMMW-7) below top of casing. Groundwater elevations were calculated based on measured depth to water and known top of casing elevations relative to a common benchmark, adjusted for the presence of free product, where applicable, using an assumed relative product density of 0.75. Adjusted groundwater elevations in the shallow wells ranged from 93.34-feet (MW-12) to 93.55-feet (MW-13). A summary of groundwater gauging and elevation data is provided in Table 5. Based on this data, groundwater flow direction was interpreted to trend towards the north as illustrated on Figure 4. The groundwater flow direction is generally consistent with previous assessments. 4.4 LABORATORY RESULTS Laboratory analytical results from the October 28, 2021 sampling event were compared to the groundwater quality standards defined in Title 15A of the North Carolina Administrative Code, Subchapter 2L, Section .0202 (2L Standards) and applicable Gross Contamination Levels (GCLs). Upon review of the laboratory analytical report, the groundwater samples collected from monitoring wells MW-12, MW-13, and RW-1 contained concentrations of dissolved-phase benzene, toluene, ethylbenzene, and/or xylenes above the 2L Standards. Remaining chemicals of concern (COC) were reported to be below 2L Standards. No exceedances of the GCLs were reported. Table 6 provides a summary of laboratory results showing detections of COCs for groundwater samples. The estimated horizontal extents of benzene, toluene, ethylbenzene and xylenes above 2L Standards are illustrated in Figure 6A, Figure 6B, Figure 6C, and Figure 6D, respectively. The laboratory reports and chain of custody forms are provided in Appendix D. 4.5 ESTIMATED EXTENT OF CONTAMINATION Soil sampling has not been performed since the comprehensive site assessment activities (Appendix A). Historically, soil contamination was not present above the soil to groundwater maximum soil contaminant concentrations (MSCCs). GROUNDWATER MONITORING REPORT GPM 3181 (SCOTCHMAN #181) WILMINGTON, NORTH CAROLINA INCIDENT # 22460 GPM 3181 (SCOTCHMAN #181): GROUNDWATER MONITORING REPORT 8 Historically, free product has been detected in monitoring well MW-13 at a maximum thickness of 1.62 feet on November 17, 2000. Free product, at a thickness of 0.04 feet, was last detected in monitoring well MW-13 during the March 2021 monitoring event. Historically, groundwater contamination above 2L Standards has been reported in the locations of MW-12, MW-13, SMMW-3, SMMW-5, SMMW-6, SMMW-7, and RW-1 comprising an approximate 3,150 ft2 area. The horizontal extent of groundwater contamination appears to be in the general area of the southeastern dispenser. The vertical extent of groundwater contamination is defined by the deep wells SMDW-1 and MW-11D. The currently known extent of groundwater contamination is consistent with historical assessments and comprises an approximate 1,365 ft2 area beneath the site. Groundwater analytical data has not been consistently obtained from monitoring well MW-13 due to the presence of free product. 5.0 CONCLUSIONS AND RECOMMENDATIONS 5.1 CONCLUSIONS The following conclusions are presented based upon the data and site-specific information collected and presented in this report:  Dissolved-phase COC concentrations were identified above 2L Standards in groundwater samples collected from monitoring wells MW-12, MW-13, and RW-1 during the October 2021 sampling event. No free product was detected during the October 2021 event.  The presence of supply wells for potable use within 1,000-feet of the site contribute to the site’s risk ranking. 5.2 RECOMMENDATIONS CES recommends the following:  A plume stability analysis may be warranted to evaluate contaminant trend data as a route to incident closure.  Once the contamination is determined to not pose a significant risk, the site should be re-ranked and the incident considered for closure under a restrictive covenant. GROUNDWATER MONITORING REPORT GPM 3181 (SCOTCHMAN #181) WILMINGTON, NORTH CAROLINA INCIDENT # 22460 GPM 3181 (SCOTCHMAN #181): GROUNDWATER MONITORING REPORT 9 6.0 STATEMENTS AND CERTIFICATION 1 Enter the date the monitoring report was due. 1/14/2022 Will this report be submitted after the established due date? 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 If applicable, will any of the proposed attenuation milestones under the schedule approved in the Corrective Action Plan not be met? (within a reasonable margin of error) YES NO IF the answer to question #3 is “NO”, skip to the certification under #8 below. IF the answer to question #3 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.) Not applicable, milestones have not been determined for the site. 4 Does any known or suspected source zone soil contamination or free product remain outside of the assessed area that could be inhibiting natural attenuation? YES NO 5 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.) 6 Certification: I, Rachel Raines, a Licensed Geologist for CES of NC, PLLC., do certify that the information contained in this report is correct and accurate to the best of my knowledge. Rachel Raines, NC PG 2739 Project Geologist CES OF NC, PLLC. is licensed to practice geology in North Carolina. The certification number of the company or corporation is C-550. GROUNDWATER MONITORING REPORT GPM 3181 (SCOTCHMAN #181) WILMINGTON, NORTH CAROLINA INCIDENT # 22460 GPM 3181 (SCOTCHMAN #181): GROUNDWATER MONITORING REPORT 10 7.0 REMARKS The recommendations contained in this report represent CES of NC’s professional opinions based upon the currently available information and are arrived at in accordance with currently accepted professional standards. This report is based upon a specific scope of work, and only those tasks specifically authorized by that contract or outlined in this report were performed. This report is intended only for the use of CES of NC’s client and anyone else specifically identified in writing by CES of NC as a user of this report. CES of NC will not and cannot be liable for unauthorized reliance by any other third party. Other than as contained in this paragraph, CES of NC makes no express or implied warranty as to the contents of this report. GROUNDWATER MONITORING REPORT GPM 3181 (SCOTCHMAN #181) WILMINGTON, NORTH CAROLINA INCIDENT # 22460 GPM 3181 (SCOTCHMAN #181): GROUNDWATER MONITORING REPORT FIGURES Project No: Date: Revision: Project Manager: Drawn By: Checked By: 5104 Reagan Drive, Suite 7 Charlotte, NC 28206 540-343-6256 (phone) 540-343-6259 (fax) CLIENT: LOCATION: GPM 3181 Site Location Map Figure 15302 Carolina Beach Road Wilmington, North Carolina GPM Southeast, LLC DJF RAR Groundwater Monitoring Report 9.0898 12/15/21 0 OHE OHE OHE OHC OHCOHEOHE OHT OHT OHT OHEOHEProject No: Date: Revision: Project Manager: Drawn By: Checked By: 5104 Reagan Drive, Suite 7 Charlotte, NC 28206 540-343-6256 (phone) 540-343-6259 (fax) CLIENT: LOCATION:Figure 2 RAR 0 0 20'40'80' 1 inch equals 40 feet Legend Monitoring Well (Type II) Monitoring Well (Type III) Utility/Power Pole Sanitary/Storm Sewer Manhole Overhead Electric Line Overhead Communication Line Overhead Traffic Control Stormwater Ditch OHE OHC OHT GPM 3181 Site Map 5302 Carolina Beach Road Wilmington, North Carolina GPM Southeast, LLC Groundwater Monitoring Report DJF 9.0898 12/15/21 Project No: Date: Revision: Project Manager: Drawn By: Checked By: 5104 Reagan Drive, Suite 7 Charlotte, NC 28206 540-343-6256 (phone) 540-343-6259 (fax) CLIENT: LOCATION:Figure 3 RAR 0 0 250'500'1,000' 1 inch equals 500 feet Legend Property Lines Former Water Supply Well Potable Water Supply Well Non-Potable Water Supply Well GPM 3181 Site Area Map 5302 Carolina Beach Road Wilmington, North Carolina GPM Southeast, LLC Groundwater Monitoring Report DJF 9.0898 12/15/21 1, 5 0 0 - f e e t 1, 0 0 0 - f e e t 5 0 0 - f e e t 2 5 0 - f e e t Site 1 Well number corresponds to Table 3. 4 5 3 2 6 7 8 OHE OHE OHE OHC OHCOHEOHE OHT OHT OHT OHEOHEProject No: Date: Revision: Project Manager: Drawn By: Checked By: 5104 Reagan Drive, Suite 7 Charlotte, NC 28206 540-343-6256 (phone) 540-343-6259 (fax) CLIENT: LOCATION:Figure 4 RAR 0 0 20'40'80' 1 inch equals 40 feet Legend Monitoring Well (Type II) Monitoring Well (Type III) Utility/Power Pole Sanitary/Storm Sewer Manhole Overhead Electric Line Overhead Communication Line Overhead Traffic Control Stormwater Ditch Groundwater Contour Line Groundwater Elevation (feet) Groundwater Flow Direction OHE OHC OHT GPM 3181 Potentiometric Map (03/17/2021) 5302 Carolina Beach Road Wilmington, North Carolina GPM Southeast, LLC Groundwater Monitoring Report (94.28) 94.50 (93.55) (NA) (93.45)(NA) (93.34) 93.50 DJF 9.0898 12/15/21 (NA) Project No: Date: Revision: Project Manager: Drawn By: Checked By: 5104 Reagan Drive, Suite 7 Charlotte, NC 28206 540-343-6256 (phone) 540-343-6259 (fax) CLIENT: LOCATION:Figure 5 RAR 0 0 20'40'80' 1 inch equals 40 feet Legend Monitoring Well (Type II) Monitoring Well (Type III) GPM 3181 Groundwater Analytical Results Map 5302 Carolina Beach Road Wilmington, North Carolina GPM Southeast, LLC Groundwater Monitoring Report DJF 9.0898 12/15/21 Concentrations in ug/L Bold and Shaded is above 2L Standards Non Detect Not Analyzed ND NA OHE OHE OHE OHC OHCOHEOHE OHT OHT OHT OHEOHEProject No: Date: Revision: Project Manager: Drawn By: Checked By: 5104 Reagan Drive, Suite 7 Charlotte, NC 28206 540-343-6256 (phone) 540-343-6259 (fax) CLIENT: LOCATION:Figure 6A RAR 0 0 20'40'80' 1 inch equals 40 feet Legend Monitoring Well (Type II) Monitoring Well (Type III) Utility/Power Pole Sanitary/Storm Sewer Manhole Overhead Electric Line Overhead Communication Line Overhead Traffic Control Stormwater Ditch Benzene Concentration Contour Line Benzene Concentration in ug/L (10/28/2021) Benzene 2L Standard: 1 ug/L OHE OHC OHT GPM 3181 Benzene Isoconcentration Map (10/28/2021) 5302 Carolina Beach Road Wilmington, North Carolina GPM Southeast, LLC Groundwater Monitoring Report (26) 1 (20) (26) (<0.50) (<0.50)(14) DJF 9.0898 12/15/21 (NS) Not Sampled(NS) (<0.50) (NS) (NS) (NS) (NS) (NS) (NS) (NS) (NS) (NS)(NS) (NS)(NS) (NS) (NS) 1 OHE OHE OHE OHC OHCOHEOHE OHT OHT OHT OHEOHELegend Monitoring Well (Type II) Monitoring Well (Type III) Utility/Power Pole Sanitary/Storm Sewer Manhole Overhead Electric Line Overhead Communication Line Overhead Traffic Control Stormwater Ditch Toluene Concentration Contour Line Toluene Concentration in ug/L (10/28/2021) Toluene 2L Standard: 600 ug/L OHE OHC OHT GPM 3181 Toluene Isoconcentration Map (10/28/2021) 5302 Carolina Beach Road Wilmington, North Carolina GPM Southeast, LLC Groundwater Monitoring Report (6.300) 600 (6,300) (20) (<0.50) (<0.50)(1,500) DJF 9.0898 12/15/21 (NS) Not Sampled(NS) (<0.50) (NS) (NS) (NS) (NS) (NS) (NS) (NS) (NS) (NS)(NS) (NS)(NS) (NS) (NS) 600 Project No: Date: Revision: Project Manager: Drawn By: Checked By: 5104 Reagan Drive, Suite 7 Charlotte, NC 28206 540-343-6256 (phone) 540-343-6259 (fax) CLIENT: LOCATION:Figure 6B RAR 0 0 20'40'80' 1 inch equals 40 feet OHE OHE OHE OHC OHCOHEOHE OHT OHT OHT OHEOHEProject No: Date: Revision: Project Manager: Drawn By: Checked By: 5104 Reagan Drive, Suite 7 Charlotte, NC 28206 540-343-6256 (phone) 540-343-6259 (fax) CLIENT: LOCATION:Figure 6C RAR 0 0 20'40'80' 1 inch equals 40 feet Legend Monitoring Well (Type II) Monitoring Well (Type III) Utility/Power Pole Sanitary/Storm Sewer Manhole Overhead Electric Line Overhead Communication Line Overhead Traffic Control Stormwater Ditch Ethylbenzene Concentration Contour Line Ethylbenzene Concentration in ug/L (10/28/2021) Ethylbenzene 2L Standard: 600 ug/L OHE OHC OHT GPM 3181 Ethylbenzene Isoconcentration (10/28/2021) 5302 Carolina Beach Road Wilmington, North Carolina GPM Southeast, LLC Groundwater Monitoring Report (2,200) 600 (2,200) (610) (0.87) (<0.50) (620) DJF 9.0898 12/15/21 (NS) Not Sampled(NS) (NS) (<0.50) (NS) (NS) (NS) (NS) (NS) (NS)(NS) (NS) (NS) (NS) (NS) (NS) (NS) 600 OHE OHE OHE OHC OHCOHEOHE OHT OHT OHT OHEOHELegend Monitoring Well (Type II) Monitoring Well (Type III) Utility/Power Pole Sanitary/Storm Sewer Manhole Overhead Electric Line Overhead Communication Line Overhead Traffic Control Stormwater Ditch Xylenes Concentration Contour Line Xylenes Concentration in ug/L (10/28/2021) Xylenes 2L Standard: 500 ug/L OHE OHC OHT GPM 3181 Xylenes Isoconcentration Map (10/28/2021) 5302 Carolina Beach Road Wilmington, North Carolina GPM Southeast, LLC Groundwater Monitoring Report (11,900) 500 (11,900) (83) (<1.0) (<1.0)(2,400) DJF 9.0898 12/15/21 (NS) Not Sampled(NS) (<1.0) (NS) (NS) (NS) (NS) (NS) (NS) (NS) (NS) (NS)(NS) (NS)(NS) (NS) (NS) 500 Project No: Date: Revision: Project Manager: Drawn By: Checked By: 5104 Reagan Drive, Suite 7 Charlotte, NC 28206 540-343-6256 (phone) 540-343-6259 (fax) CLIENT: LOCATION:Figure 6D RAR 0 0 20'40'80' 1 inch equals 40 feet GROUNDWATER MONITORING REPORT GPM 3181 (SCOTCHMAN #181) WILMINGTON, NORTH CAROLINA INCIDENT # 22460 GPM 3181 (SCOTCHMAN #181): GROUNDWATER MONITORING REPORT TABLES UST ID NumberCapacity (gallons)Construction Details Description of Associated Piping and PumpsDate Tank InstalledStatus of USTWas release associated with the UST System?1 4,000Single‐Walled SteelSingle‐Walled Steel 5/10/1971Closed by Removal 07/12/1993Yes2 4,000Single‐Walled SteelSingle‐Walled Steel 5/10/1971Closed by Removal 07/12/1993Yes3 4,000Single‐Walled SteelSingle‐Walled Steel 5/10/1971Closed by Removal 07/12/1993Yes4 4,000Single‐Walled SteelSingle‐Walled Steel 5/10/1971Closed by Removal 07/12/1993YesA1 6,000Single‐Walled SteelSingle‐Walled FRP, Pressurized System1/4/1994 Currently in Use YesA2 6,000Single‐Walled SteelSingle‐Walled FRP, Pressurized System1/4/1994 Currently in Use YesA3 3,000Single‐Walled SteelSingle‐Walled FRP, European System1/4/1994 Currently in Use NoIncident NumberMaterial ReleasedDate of Release22763 Gasoline 10/18/20007053 Gasoline 1991Notes:‐ UST information provided by NCDEQ Registered Tanks DatabaseKeroseneDescription of ReleaseDiscovered during dispenser inspection Discovered during UST closure activities, UST #s 1,2,3,4GasolineGasolineGasolineGasolineGasolineGasolineCurrent/Last Contents TABLE 1UST/AST SYSTEM AND OTHER RELEASE INFORMATIONGPM 3181 (Scotchman #3181)Wilmington, New Hanover County, North Carolina UST ID Nos.Name of UST Owner or OperatorAddress Telephone No.UST Owner or Operator?A1 through A3Worsley Companies, Inc/Worsley Operating CorporationP.O. Box 3227 Wilmington, NC 28406+1 910 395 5300 Both1 through 4Crown Central Petroleum Corp.1 North Charles Street Baltimore, MD 21203Unknown Unknown8565 Magellan Parkway, Suite 400 Richmond, VA 23227+1 804 730 1568 BothTABLE 2SITE HISTORY ‐ UST/AST OWNER/OPERATOR AND OTHER RESPONSIBLE PARTY INFORMATIONGPM 3181 (Scotchman #3181)Wilmington, New Hanover County, North CarolinaDates of Ownership / Operation 10/1996 to 20131971 to 10/1996A1 through A3 2013 to present GPM Southeast, LLCPage 1 of 1 Well NumberProperty Location Property Owner Well UseConnected to Municipal Water SystemWell Depth (ft bgs)Approximate Distance of Well from Source Area (ft)O'Reilly Automotive Stores, Inc. O'Reilly Automotive Stores, Inc.5232 Carolina Beach Road Springfield, MO Well no longer exists unknown unk. 255Wilmington, NC 28412Monkey Barz Gary Mativa, et al. Well #1 In‐Use5310 Carolina Beach Road Wilmington, NC PWS #7065018 no 115 475Wilmington, NC 28412 Potable and non‐potable usesCoastal Car Wash ZA Sneeden LLC Well not‐in‐use5253 Carolina Beach Road Wilmington, NC Non‐potable uses yes unk. 410Wilmington, NC 28412Robert and Charlene Jernigan Robert and Charlene JerniganPrivate well In‐Use26 Antoinette Drive 26 Antoinette Drive Non‐potable uses yes unk. 760Wilmington, NC 28412 Wilmington, NC 28412Danny and Marcia Powell Danny and Marcia PowellPrivate well In‐Use5220 Carolina Beach Road 5220 Carolina Beach Road Potable and Non‐potable uses no unk. 960Wilmington, NC 28412 Wilmington, NC 28412Midas/Eye Institute Lynrich Associates, LLC Private well In‐Use5526 Carolina Beach Road Wilmington, NC Potable and Non‐potable uses no unk. 1,025Wilmington, NC 28412Myrtle Grove Barber Ruby Lee TrudgePrivate well In‐Use5544 Carolina Beach Road Wilmington, NC Potable and Non‐potable uses no unk. 1,240Wilmington, NC 28412Grove Park Center6943 Market LLC Private well In‐Use5552 Carolina Beach Road Wilmington, NC Non‐potable uses yes unk. 1,620Wilmington, NC 28412 (Irrigation)Notes:‐ ID numbers correspond to Site Area Map.‐ "unk." denotes data not available 82345671TABLE 3 WATER SUPPLY WELL INFORMATIONGPM 3181 (Scotchman #3181)Wilmington, New Hanover County, North Carolina SUMMARY OF WELL CONSTRUCTION DATA Well ID Boring Depth (ft, bgs) Well Screen Interval (ft, bgs) Well Diameter (inches) Top of Casing Elevation (ft) Installation Date Well Status/Comments MW‐1 NA NA NA 102.15 NA Not Located, data not available MW‐2 12 2 ‐ 12 2 99.32 8/7/1991 Current, installed by AES MW‐3 12 2 ‐ 12 2 97.65 8/7/1991 Current, installed by AES MW‐4 NA NA NA 100.69 1991 Destroyed prior to 2000, installed by AES MW‐5 NA NA NA 97.89 1992 Destroyed/removed prior to 2000 MW‐6 15 2.5 ‐ 15 2 99.83 6/9/1992 Not Located, data not available MW‐7 NA NA NA 99.60 1992 Destroyed/removed prior to 2000 MW‐8 NA NA NA NA NA Not Located, data not available MW‐9 13 3 ‐ 13 2 98.69 2/18/2000 Current, installed by Agra MW‐10 13 3 ‐ 13 2 98.01 2/18/2000 Current, installed by Agra MW‐11 12 2‐12 2 NA 3/7/2018 Current, installed by CES 03/07/2018 MW‐11D 40 30 ‐ 40 2 97.73 2/18‐19/2000 Current, installed by Agra MW‐12 13 3 ‐ 13 2 97.94 10/11/2000 Current, installed by Agra MW‐13 13 3 ‐ 13 2 98.09 10/11/2000 Current, installed by Agra MW‐14 13 3 ‐ 13 2 98.21 10/11/2000 Current, installed by Agra MW‐15 13 3 ‐ 13 2 97.16 10/11/2000 Current, installed by Agra SMMW‐1122 ‐ 12 2 99.71 7/25/2001 Current, installed by Delta SMMW‐2122 ‐ 12 2 99.05 7/25/2001 Current, installed by Delta SMMW‐3102 ‐ 10 2 97.93 7/25/2001 Current, installed by Delta SMMW‐4122 ‐ 12 2 98.82 3/14/2002 Current, installed by Delta SMMW‐5122 ‐ 12 2 98.13 3/14/2002 Current, installed by Delta SMMW‐6122 ‐ 12 2 98.80 3/14/2002 Current, installed by Delta SMMW‐7122 ‐ 12 2 98.56 3/14/2002 Current, installed by Delta SMMW‐8122 ‐ 12 2 98.38 3/14/2002 Current, installed by Delta SMMW‐9122 ‐ 12 2 98.00 3/14/2002 Current, installed by Delta SMDW‐12520 ‐ 25 2 98.91 7/25/2001 Current, installed by Delta RW‐1 NA NA 4 NA NA Current, data not available AS‐1 22 20 ‐ 22 2 NA NA Current, installed by Delta SVE‐1 NA NA 2 NA NA Current, horizontal well installed by Delta OB‐1151 ‐ 15 2 NA 9/2002 Current, installed by Delta Notes: ‐ ft,bgs denotes feet, below ground surface ‐ NA indicates that this information is not available ‐ Delta (Delta Environmental Consultants, Inc.) ‐ Agra (Agra Environmental, Inc.) ‐ AES (Applied Environmental Sciences, Inc.) TABLE 4 GPM 3181 (Scotchman #3181) Wilmington, New Hanover County, North Carolina Well No. Well Depth (ft, bgs) Well Screen Interval (ft,bgs) Top of Casing Elevation (ft) Measurement Date Depth to Groundwater (ft, TOC) Free Product Thickness (ft) Adjusted Groundwater Elevation (ft) 8/8/1991 4.43 ‐‐‐97.72 6/25/1992 4.98 ‐‐‐97.17 1/20/2004 4.70 ‐‐‐94.62 6/23/2004 6.85 ‐‐‐92.47 3/6/2007 4.36 ‐‐‐94.96 9/26/2007 6.23 ‐‐‐93.09 9/29/2008 5.69 ‐‐‐93.63 9/28/2010 3.53 ‐‐‐95.79 1/12/2012 5.70 ‐‐‐93.62 7/25/2012 6.40 ‐‐‐92.92 2/15/2013 3.05 ‐‐‐96.27 11/4/2014 6.59 ‐‐‐92.73 11/28/2017 5.46 ‐‐‐93.86 11/16/2001 6.47 ‐‐‐91.18 1/20/2004 4.58 ‐‐‐93.07 6/23/2004 5.77 ‐‐‐91.88 8/18/2004 2.30 ‐‐‐95.35 3/6/2007 4.21 ‐‐‐93.44 9/26/2007 5.10 ‐‐‐92.55 3/13/2008 3.92 ‐‐‐93.73 9/29/2008 4.70 ‐‐‐92.95 8/12/2009 5.76 ‐‐‐91.89 3/10/2010 3.62 ‐‐‐94.03 9/28/2010 3.20 ‐‐‐94.45 1/25/2018 3.50 ‐‐‐94.15 8/8/1991 3.56 ‐‐‐97.13 6/25/1992 4.27 ‐‐‐96.42 6/25/1992 5.90 ‐‐‐91.99 MW‐6 15 2.5 ‐ 15 99.83 6/25/1992 5.99 ‐‐‐93.84 6/25/1992 4.77 ‐‐‐94.83 Well destroyed sometime prior to 2000 Well destroyed sometime prior to 2000 MW‐2 12 2 ‐ 12 99.32 MW‐3 MW‐7 30 25 ‐ 30 99.60 TABLE 5 SUMMARY OF GROUNDWATER ELEVATION DATA GPM 3181 (Scotchman #3181) Wilmington, New Hanover County, North Carolina MW‐1 12.5 2.5 ‐ 12.5 102.15 MW‐4 12 2 ‐ 12 100.69 Well destroyed sometime prior to 2000 12 2 ‐ 12 97.65 MW‐5 15 2.5 ‐ 15 97.89 Well No. Well Depth (ft, bgs) Well Screen Interval (ft,bgs) Top of Casing Elevation (ft) Measurement Date Depth to Groundwater (ft, TOC) Free Product Thickness (ft) Adjusted Groundwater Elevation (ft) TABLE 5 SUMMARY OF GROUNDWATER ELEVATION DATA GPM 3181 (Scotchman #3181) Wilmington, New Hanover County, North Carolina 3/18/2002 4.99 ‐‐‐93.70 1/20/2004 4.90 ‐‐‐93.79 6/23/2004 6.28 ‐‐‐92.41 8/18/2004 3.30 ‐‐‐95.39 3/6/2007 4.57 ‐‐‐94.12 9/26/2007 5.84 ‐‐‐92.85 9/29/2008 4.89 ‐‐‐93.80 7/25/2012 6.14 ‐‐‐92.55 2/15/2013 3.63 ‐‐‐95.06 11/4/2014 6.09 ‐‐‐92.60 1/25/2018 3.87 ‐‐‐ ‐3.87 11/16/2001 6.75 ‐‐‐91.26 1/20/2004 5.01 ‐‐‐93.00 6/23/2004 6.15 ‐‐‐91.86 3/13/2008 4.47 ‐‐‐93.54 9/29/2008 5.23 ‐‐‐92.78 8/12/2009 5.96 ‐‐‐92.05 3/10/2010 4.18 ‐‐‐93.83 9/28/2010 4.24 ‐‐‐93.77 2/15/2013 3.81 ‐‐‐94.20 11/4/2014 6.26 ‐‐‐91.75 1/25/2018 3/8/2018 3.99 ‐‐‐NA 10/9/2019 6.22 ‐‐‐NA 4/29/2020 4.48 ‐‐‐NA 3/17/2021 4.40 ‐‐‐NA 10/28/2021 4.47 ‐‐‐NA Well destroyed sometime prior to 2018 MW‐10 13 3 ‐ 13 98.01 MW‐9 13 3 ‐ 13 98.69 MW‐11 12 2‐12 NA Well No. Well Depth (ft, bgs) Well Screen Interval (ft,bgs) Top of Casing Elevation (ft) Measurement Date Depth to Groundwater (ft, TOC) Free Product Thickness (ft) Adjusted Groundwater Elevation (ft) TABLE 5 SUMMARY OF GROUNDWATER ELEVATION DATA GPM 3181 (Scotchman #3181) Wilmington, New Hanover County, North Carolina 3/18/2002 6.48 ‐‐‐91.25 1/20/2004 6.01 ‐‐‐91.72 6/23/2004 6.75 ‐‐‐90.98 8/18/2004 5.70 ‐‐‐92.03 3/6/2007 5.58 ‐‐‐92.15 9/26/2007 5.59 ‐‐‐92.14 3/13/2008 4.35 ‐‐‐93.38 9/29/2008 5.02 ‐‐‐92.71 8/12/2009 5.96 ‐‐‐91.77 3/10/2010 3.90 ‐‐‐93.83 1/25/2018 3.76 ‐‐‐93.97 7/20/2018 3.91 ‐‐‐93.82 10/9/2019 5.85 ‐‐‐91.88 4/29/2020 4.35 ‐‐‐93.38 3/17/2021 3.73 ‐‐‐94.00 11/16/2001 6.30 ‐‐‐91.64 1/20/2004 4.40 ‐‐‐93.54 6/23/2004 5.49 ‐‐‐92.45 8/18/2004 2.70 ‐‐‐95.24 3/6/2007 4.10 ‐‐‐93.84 9/26/2007 5.18 ‐‐‐92.76 3/13/2008 3.83 ‐‐‐94.11 9/29/2008 4.82 ‐‐‐93.12 8/12/2009 5.44 ‐‐‐92.50 3/10/2010 3.53 ‐‐‐94.41 9/28/2010 4.69 ‐‐‐93.25 1/12/2012 5.10 ‐‐‐92.84 7/25/2012 5.47 ‐‐‐92.47 2/15/2013 3.21 ‐‐‐94.73 11/4/2014 5.47 ‐‐‐92.47 11/28/2017 4.56 ‐‐‐93.38 1/25/2018 3.47 ‐‐‐94.47 7/20/2018 4.18 ‐‐‐93.76 10/10/2019 5.82 ‐‐‐92.12 4/29/2020 4.18 ‐‐‐93.76 3/17/2021 3.66 ‐‐‐94.28 10/28/2021 4.60 ‐‐‐93.34 MW‐12 13 3 ‐ 13 97.94 MW‐11D 40 30 ‐ 40 97.73 Well No. Well Depth (ft, bgs) Well Screen Interval (ft,bgs) Top of Casing Elevation (ft) Measurement Date Depth to Groundwater (ft, TOC) Free Product Thickness (ft) Adjusted Groundwater Elevation (ft) TABLE 5 SUMMARY OF GROUNDWATER ELEVATION DATA GPM 3181 (Scotchman #3181) Wilmington, New Hanover County, North Carolina 7/25/2000 6.25 1.10 92.67 11/17/2000 6.44 1.62 92.87 11/21/2000 4.80 0.31 93.52 12/12/2000 4.65 1.30 94.42 12/20/2000 4.17 0.48 94.28 7/30/2001 6.35 1.03 92.51 11/9/2001 5.31 0.54 93.19 9/24/2001 4.34 0.08 93.81 3/18/2002 5.64 1.38 93.49 1/20/2004 4.97 0.94 93.83 6/23/2004 4.99 ‐‐‐93.10 8/18/2004 3.36 ‐‐‐94.73 3/10/2006 3.54 0.04 94.58 4/18/2006 4.30 0.01 93.80 5/17/2006 4.83 0.01 93.27 7/14/2006 5.55 0.01 92.55 8/21/2006 5.81 0.01 92.29 9/11/2006 3.81 0.01 94.29 10/25/2006 4.38 Sheen 93.71 11/9/2006 3.72 Sheen 94.37 12/9/2006 3.74 Sheen 94.35 3/6/2007 3.95 0.01 94.15 8/20/2007 6.23 0.03 91.88 9/5/2007 6.20 0.05 91.93 3/13/2008 3.96 0.22 94.30 MW‐13 13 3 ‐ 13 98.09 Well No. Well Depth (ft, bgs) Well Screen Interval (ft,bgs) Top of Casing Elevation (ft) Measurement Date Depth to Groundwater (ft, TOC) Free Product Thickness (ft) Adjusted Groundwater Elevation (ft) TABLE 5 SUMMARY OF GROUNDWATER ELEVATION DATA GPM 3181 (Scotchman #3181) Wilmington, New Hanover County, North Carolina 4/14/2008 3.81 0.06 94.33 8/21/2008 5.09 0.04 93.03 9/12/2008 4.98 0.03 93.13 9/29/2008 4.64 ‐‐‐93.45 1/5/2009 4.99 0.04 93.13 2/9/2009 3.90 0.04 94.22 5/29/2009 3.21 0.04 94.91 8/12/2009 5.27 ‐‐‐92.82 9/16/2009 5.37 ‐‐‐92.72 2/12/2010 1 2.76 0.01 95.34 3/10/2010 3.32 Sheen 94.77 3/18/2010 2.63 Sheen 95.46 4/16/2010 3.71 0.02 94.40 5/17/2010 4.80 0.01 93.30 8/19/20101 5.83 0.04 92.29 9/3/2010 4.65 0.03 93.46 9/28/2010 3.90 0.02 94.21 10/18/2010 3.86 ‐‐‐94.23 3/15/2011 3.81 0.01 94.29 4/22/2011 4.53 ‐‐‐93.56 5/19/2011 5.35 ‐‐‐92.74 6/17/2011 6.08 ‐‐‐92.01 1/12/2012 4.81 ‐‐‐93.28 7/25/2012 5.35 ‐‐‐92.74 2/15/2013 2.94 0.27 95.35 11/4/2014 5.04 ‐‐‐93.05 11/28/2017 4.28 0.02 93.83 7/20/2018 3.60 ‐‐‐94.49 10/10/2019 5.76 0.35 92.59 4/29/2020 4.09 ‐‐‐94.00 3/17/2021 3.25 0.04 94.87 9/10/2021 4.11 ‐‐‐93.98 10/6/2021 3.78 ‐‐‐94.31 10/28/2021 4.54 ‐‐‐93.55 MW‐13 13 3 ‐ 13 98.09 Well No. Well Depth (ft, bgs) Well Screen Interval (ft,bgs) Top of Casing Elevation (ft) Measurement Date Depth to Groundwater (ft, TOC) Free Product Thickness (ft) Adjusted Groundwater Elevation (ft) TABLE 5 SUMMARY OF GROUNDWATER ELEVATION DATA GPM 3181 (Scotchman #3181) Wilmington, New Hanover County, North Carolina 3/18/2002 4.83 ‐‐‐93.38 6/23/2004 5.11 ‐‐‐93.10 8/18/2004 3.04 ‐‐‐95.17 3/6/2007 4.24 ‐‐‐93.97 9/26/2007 5.36 ‐‐‐92.85 3/13/2008 4.02 ‐‐‐94.19 9/29/2008 4.93 ‐‐‐93.28 8/12/2009 5.57 ‐‐‐92.64 3/10/2010 3.64 ‐‐‐94.57 9/28/2010 4.03 ‐‐‐94.18 1/12/2012 5.12 ‐‐‐93.09 7/25/2012 5.68 ‐‐‐92.53 2/15/2013 3.31 ‐‐‐94.90 11/4/2014 5.39 ‐‐‐92.82 1/25/2018 3.44 ‐‐‐94.77 9/28/2010 2.79 ‐‐‐94.37 1/12/2012 4.19 ‐‐‐92.97 7/25/2012 5.57 ‐‐‐91.59 2/15/2013 2.51 ‐‐‐94.65 11/4/2014 5.53 ‐‐‐91.63 11/28/2017 4.38 ‐‐‐92.78 7/20/2018 1.97 ‐‐‐95.19 10/9/2019 5.70 ‐‐‐91.46 4/29/2020 3.99 ‐‐‐93.17 3/17/2021 3.13 ‐‐‐94.03 MW‐15 13 3 ‐ 13 97.16 MW‐14 13 3 ‐ 13 98.21 Well No. Well Depth (ft, bgs) Well Screen Interval (ft,bgs) Top of Casing Elevation (ft) Measurement Date Depth to Groundwater (ft, TOC) Free Product Thickness (ft) Adjusted Groundwater Elevation (ft) TABLE 5 SUMMARY OF GROUNDWATER ELEVATION DATA GPM 3181 (Scotchman #3181) Wilmington, New Hanover County, North Carolina 7/30/2001 6.82 ‐‐‐92.89 9/24/2001 5.29 ‐‐‐94.42 3/18/2002 5.19 ‐‐‐94.52 1/20/2004 5.17 ‐‐‐94.54 6/23/2004 6.70 ‐‐‐93.01 3/6/2007 4.94 ‐‐‐94.77 9/26/2007 6.20 ‐‐‐93.51 3/13/2008 4.60 ‐‐‐95.11 9/29/2008 5.80 ‐‐‐93.91 8/12/2009 6.40 ‐‐‐93.31 3/10/2010 4.31 ‐‐‐95.40 9/28/2010 4.61 ‐‐‐95.10 1/12/2012 5.93 ‐‐‐93.78 7/25/2012 6.52 ‐‐‐93.19 2/15/2013 4.01 ‐‐‐95.70 11/4/2014 6.06 ‐‐‐93.65 11/28/2017 5.29 ‐‐‐94.42 7/30/2001 6.18 ‐‐‐92.87 9/24/2001 4.76 ‐‐‐94.29 3/18/2002 4.83 ‐‐‐94.22 1/20/2004 4.66 ‐‐‐94.39 6/23/2004 5.71 ‐‐‐93.34 9/26/2007 5.41 ‐‐‐93.64 3/13/2008 4.13 ‐‐‐94.92 9/29/2008 5.17 ‐‐‐93.88 8/12/2009 5.72 ‐‐‐93.33 3/10/2010 3.72 ‐‐‐95.33 SMMW‐1 12 2 ‐ 12 99.71 SMMW‐2 12 2 ‐ 12 99.05 Well No. Well Depth (ft, bgs) Well Screen Interval (ft,bgs) Top of Casing Elevation (ft) Measurement Date Depth to Groundwater (ft, TOC) Free Product Thickness (ft) Adjusted Groundwater Elevation (ft) TABLE 5 SUMMARY OF GROUNDWATER ELEVATION DATA GPM 3181 (Scotchman #3181) Wilmington, New Hanover County, North Carolina 7/30/2001 5.26 ‐‐‐92.67 3/18/2002 4.19 ‐‐‐93.74 1/20/2004 4.02 ‐‐‐93.91 6/23/2004 4.45 ‐‐‐93.48 8/18/2004 2.73 ‐‐‐95.20 3/6/2007 3.76 ‐‐‐94.17 9/26/2007 4.84 ‐‐‐93.09 3/13/2008 3.54 ‐‐‐94.39 9/29/2008 4.46 ‐‐‐93.47 8/12/2009 5.12 ‐‐‐92.81 3/10/2010 3.16 ‐‐‐94.77 9/28/2010 3.64 ‐‐‐94.29 1/12/2012 4.65 ‐‐‐93.28 7/25/2012 5.21 ‐‐‐92.72 2/15/2013 2.89 ‐‐‐95.04 11/4/2014 4.86 ‐‐‐93.07 3/18/2004 4.81 ‐‐‐94.01 3/6/2007 4.35 ‐‐‐94.47 9/26/2007 5.41 ‐‐‐93.41 3/13/2008 4.10 ‐‐‐94.72 9/29/2008 5.05 ‐‐‐93.77 8/12/2009 5.61 ‐‐‐93.21 3/10/2010 3.59 ‐‐‐95.23 9/28/2010 4.10 ‐‐‐94.72 1/12/2012 5.23 ‐‐‐93.59 7/25/2012 5.47 ‐‐‐93.35 2/15/2013 3.39 ‐‐‐95.43 11/4/2014 5.25 ‐‐‐93.57 11/28/2017 4.52 ‐‐‐94.30 3/18/2002 4.35 ‐‐‐93.78 1/20/2004 4.15 ‐‐‐93.98 8/18/2004 3.50 ‐‐‐94.63 3/6/2007 3.64 ‐‐‐94.49 9/28/2010 3.61 ‐‐‐94.52 1/12/2012 4.76 ‐‐‐93.37 7/25/2012 5.31 ‐‐‐92.82 2/15/2013 3.03 ‐‐‐95.10 11/4/2014 4.90 ‐‐‐93.23 SMMW‐4 SMMW‐3 12 2 ‐ 12 97.93 SMMW‐5 12 2 ‐ 12 98.13 12 2 ‐ 12 98.82 Well No. Well Depth (ft, bgs) Well Screen Interval (ft,bgs) Top of Casing Elevation (ft) Measurement Date Depth to Groundwater (ft, TOC) Free Product Thickness (ft) Adjusted Groundwater Elevation (ft) TABLE 5 SUMMARY OF GROUNDWATER ELEVATION DATA GPM 3181 (Scotchman #3181) Wilmington, New Hanover County, North Carolina 3/18/2002 4.76 ‐‐‐94.04 8/18/2004 2.51 ‐‐‐96.29 3/6/2007 4.44 ‐‐‐94.36 9/28/2010 4.06 ‐‐‐94.74 1/12/2012 5.39 ‐‐‐93.41 7/25/2012 5.93 ‐‐‐92.87 11/4/2014 5.63 ‐‐‐93.17 3/18/2002 4.94 ‐‐‐93.62 8/18/2004 3.70 ‐‐‐94.86 3/6/2007 4.59 ‐‐‐93.97 9/26/2007 5.70 ‐‐‐92.86 3/13/2008 4.68 ‐‐‐93.88 9/29/2008 5.34 ‐‐‐93.22 8/12/2009 5.97 ‐‐‐92.59 3/10/2010 3.97 ‐‐‐94.59 9/28/2010 4.98 ‐‐‐93.58 1/12/2012 5.59 ‐‐‐92.97 7/25/2012 6.02 ‐‐‐92.54 2/15/2013 3.71 ‐‐‐94.85 11/4/2014 5.93 ‐‐‐92.63 11/28/2017 5.06 ‐‐‐93.50 7/20/2018 4.76 ‐‐‐93.80 10/10/2019 6.38 ‐‐‐92.18 4/29/2020 4.66 ‐‐‐93.90 3/17/2021 4.04 ‐‐‐94.52 10/28/2021 5.11 ‐‐‐93.45 3/18/2002 4.84 ‐‐‐93.54 9/29/2008 5.31 ‐‐‐93.07 1/25/2018 3.90 ‐‐‐94.48 SMMW‐6 12 2 ‐ 12 98.80 SMMW‐7 12 2 ‐ 12 98.56 SMMW‐8 12 2 ‐ 12 98.38 Well No. Well Depth (ft, bgs) Well Screen Interval (ft,bgs) Top of Casing Elevation (ft) Measurement Date Depth to Groundwater (ft, TOC) Free Product Thickness (ft) Adjusted Groundwater Elevation (ft) TABLE 5 SUMMARY OF GROUNDWATER ELEVATION DATA GPM 3181 (Scotchman #3181) Wilmington, New Hanover County, North Carolina 3/18/2002 4.65 ‐‐‐93.35 3/6/2007 4.63 ‐‐‐93.37 9/26/2007 5.19 ‐‐‐92.81 3/13/2008 4.25 ‐‐‐93.75 8/12/2009 5.97 ‐‐‐92.03 3/10/2010 4.07 ‐‐‐93.93 11/28/2017 5.15 ‐‐‐92.85 1/25/2018 3.93 ‐‐‐94.07 3/10/2006 3.20 Sheen NA 4/18/2006 3.97 0.01 NA 5/17/2006 4.83 0.01 NA 7/14/2006 5.21 Sheen NA 8/21/2006 5.47 0.01 NA 9/11/2006 3.38 Sheen NA 10/25/2006 4.04 Sheen NA 11/9/2006 3.38 Sheen NA 12/9/2006 3.41 ‐‐‐NA 3/6/2007 3.58 Sheen NA 8/20/2007 5.88 ‐‐‐NA 9/5/2007 5.82 ‐‐‐NA 3/13/2008 3.36 0.01 NA 4/14/2008 3.38 0.01 NA 8/21/2008 4.70 0.02 NA 9/12/2008 4.64 0.02 NA 9/29/2008 4.30 ‐‐‐NA 1/5/2009 3.59 0.01 NA 2/9/2009 3.52 0.01 NA 5/29/2009 2.90 0.02 NA 8/12/2009 4.95 ‐‐‐NA 9/16/2009 5.03 Sheen NA 2/12/2010 1 2.37 0.01 NA 3/10/2010 3.01 Sheen NA 3/18/2010 3.07 Sheen NA SMMW‐9 12 2 ‐ 12 98.00 RW‐1 NA NA NA Well No. Well Depth (ft, bgs) Well Screen Interval (ft,bgs) Top of Casing Elevation (ft) Measurement Date Depth to Groundwater (ft, TOC) Free Product Thickness (ft) Adjusted Groundwater Elevation (ft) TABLE 5 SUMMARY OF GROUNDWATER ELEVATION DATA GPM 3181 (Scotchman #3181) Wilmington, New Hanover County, North Carolina 4/16/2010 3.35 ‐‐‐NA 5/17/2010 4.43 ‐‐‐NA 8/19/20101 5.44 0.02 NA 9/3/2010 4.29 0.03 NA 10/18/2010 3.51 ‐‐‐NA 3/15/20111 3.45 ‐‐‐NA 4/22/2011 4.19 ‐‐‐NA 5/19/2011 5.00 ‐‐‐NA 6/17/2011 5.73 ‐‐‐NA 1/12/2012 4.49 ‐‐‐NA 7/25/2012 5.01 ‐‐‐NA 2/15/2013 2.61 sheen NA 11/4/2014 4.69 ‐‐‐NA 11/28/2017 3.94 ‐‐‐NA 7/20/2018 2.94 ‐‐‐NA 10/10/2019 5.34 0.04 NA 4/29/2020 3.55 ‐‐‐NA 3/17/2021 2.95 ‐‐‐NA 10/28/2021 4.30 ‐‐‐NA 7/30/2001 6.35 ‐‐‐92.56 9/24/2001 5.07 ‐‐‐93.84 3/18/2002 5.06 ‐‐‐93.85 1/20/2004 5.02 ‐‐‐93.89 6/23/2004 6.09 ‐‐‐92.82 8/18/2004 3.68 ‐‐‐95.23 3/6/2007 4.77 ‐‐‐94.14 9/26/2007 5.76 ‐‐‐93.15 3/13/2008 4.55 ‐‐‐94.36 9/29/2008 5.51 ‐‐‐93.40 8/12/2009 6.02 ‐‐‐92.89 3/10/2010 4.14 ‐‐‐94.77 SMDW‐1 25 20 ‐ 25 98.91 RW‐1 NA NA NA Well No. Well Depth (ft, bgs) Well Screen Interval (ft,bgs) Top of Casing Elevation (ft) Measurement Date Depth to Groundwater (ft, TOC) Free Product Thickness (ft) Adjusted Groundwater Elevation (ft) TABLE 5 SUMMARY OF GROUNDWATER ELEVATION DATA GPM 3181 (Scotchman #3181) Wilmington, New Hanover County, North Carolina 9/28/2010 4.65 ‐‐‐94.26 1/12/2012 5.57 ‐‐‐93.34 7/25/2012 6.14 ‐‐‐92.77 2/15/2013 3.93 ‐‐‐94.98 11/4/2014 5.83 ‐‐‐93.08 Notes: ‐Well depths represent constructed depths. ‐The depth to water and depth to free product were measured from the top‐of‐casing. ‐Adjusted grpoundwater elevations are based on top‐of‐casing elevations minus the depth to water, whereas Depth to water has been adjusted due to presence of free product using th following formula's: DTW‐DTP=X0 ; (78%)(X0) = X1 ; DTW‐X1 = DTWADJ ‐ '‐‐' denotes free product was not detected in monitoring well at this time. ‐ ft, bgs denotes feet, below ground surface ‐ ft, TOC denotes feet from well top of casing ‐ NA denotes data not available ‐"1" Suffix denotes levels collected prior to AFVR event SMDW‐1 25 20 ‐ 25 98.91 Sampling LocationDateBenzeneTolueneEthylbenzeneXylenesMTBEIPENaphthalene1,2‐Dibromoethane (EDB)tert‐Amyl Alcoholtert‐Amylmethyl ethertert‐Butyl Alcoholtert‐Butyl FormateEthyl‐tert‐Butyl EtherEthanolAcetone2‐Butanonen‐Butylbenzenesec‐Butylbenzenetert‐ButylbenzeneIsopropylbenzenep‐Isopropyltoluenen‐Propylbenzene1,3,5‐Trimethylbenzene1,2,4‐Trimethylbenzene1 600 600 500 20 70 60.02 40 128 10 40 47 4,0006,0004,000 70 70 70 70 25 70 400 4005,000 260,000 80,000 50,000 20,000 70,000 6,00050 40,000 12,800 10,000 40,000 47,000 4,000,0006,000,0004,000,000 6,900 8,500 14,750 25,000 11,700 30,000 25,000 25,000MW‐18/7/1991BDL BDL 1.4 1.6BDL NA NANA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA8/7/19910.94 BDL 2.2 2.31.1 NA NANA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA1/20/2004< 0.5 < 0.5 < 5.0 < 1.5< 1.0 < 1.0 NANA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA6/23/2004< 0.5 < 0.5 < 5.0 < 1.5< 1.0 < 1.0 NANA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA8/7/19911.3BDL 1.1 1.6170NA NANA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA11/16/2001< 0.5 < 0.5 < 0.5 < 1.0< 10 < 0.5 NANA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA1/20/2004< 0.5 < 0.5 < 5.0 1.9< 1.0 < 1.0 NANA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA6/23/2004< 0.5 < 0.5 < 5.0 < 1.5< 1.0 < 1.0 NANA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA8/18/2004< 0.50 < 0.50 < 5.0 < 1.5< 1.0 < 1.0 NANA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA3/6/2007< 1.0 < 5.0 < 1.0 < 3.0 < 1.0 < 1.0 < 5.0NANANANANANANANANANANANANANANANANA9/26/2007< 1.0 < 5.0 < 1.0 < 3.0 < 1.0 < 1.0 < 5.0NANANANANANANANANANANANANANANANANA3/13/2008<1.0 <5.0 <1.0 <3.0 <1.0 <1.0 <5.0 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA9/29/2008<1.0 <5.0 <1.0 <3.0 <1.0 <1.0 <5.0 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA8/12/2009<1.0 <5.0 <1.0 <3.0 <1.0 <1.0 <5.0 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA3/10/2010<1.0 <5.0 <1.0 <3.0 <1.0 <1.0 <5.0 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA9/28/2010<1.0 <5.0 <1.0 <3.0 <1.0 <1.0 <5.0 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA1/25/2018<1.0 <5.0 <1.0 <3.0 <1.0 <1.0 <5.0 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NAMW‐48/7/1991158.5 9.7 68190NA NANA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NAMW‐58/7/19911.0 BDL BDL BDL2.0 NA NANA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NAMW‐68/7/1991BDL BDL 1.0 1.02.0 NA NANA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NAMW‐78/7/1991BDL BDL 2.0 BDLBDL NA NANA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA3/19/2002< 0.5 < 0.5 < 0.5 < 0.5< 10 < 10 NANA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA1/20/20042133 81 11019 < 1.0 NANA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA6/23/2004< 0.5 < 0.5 < 5.0 < 1.5< 1.0 < 1.0 NANA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA8/18/2004< 0.50 < 0.50 < 5.0 < 1.5 < 1.0 < 1.0NANA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA3/6/2007< 1.0 < 5.0 < 1.0 < 3.0 < 1.0 < 1.0 < 5.0NANANANANANANANANANANANANANANANANA9/26/2007< 1.0 < 5.0 < 1.0 < 3.0 < 1.0 < 1.0 < 5.0NANANANANANANANANANANANANANANANANA7/25/2012< 1.0 < 5.0 < 1.0 < 3.0 < 1.0 < 1.0 < 5.0NANANANANANANANANANANANANANANANANA2/15/2013< 1.0 < 5.0 < 1.0 < 3.0 < 1.0 < 1.0 < 5.0NANANANANANANANANANANANANANANANANA11/4/2014< 1.0 < 1.0 < 1.0 < 3.0 < 1.0 < 1.0<2.0NANANANANANANANANANANANANANANANANA11/16/20010.7 < 0.5 < 0.5 < 11500.9 NANA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA1/20/20040.61 6.3 < 5.0 5.2 < 1.0 < 1.0NANA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA6/23/2004< 0.5 < 0.5 < 5.0 < 1.5 1.2 < 1.0NANA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA3/13/2008<1.0 <5.0 <1.0 <3.0 <1.0 <1.0 <5.0 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA9/29/2008<1.0 <5.0 <1.0 <3.0 <1.0 <1.0 <5.0 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA8/12/2009<1.0 <5.0 <1.0 <3.0 <1.0 <1.0 <5.0 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA3/10/2010<1.0 <5.0 <1.0 <3.0 <1.0 <1.0 <5.0 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA9/28/2010<1.0 <5.0 <1.0 <3.0 <1.0 <1.0 <5.0 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA2/15/2013<1.0 <5.0 <1.0 <3.0 <1.0 <1.0 <5.0 NA NA NA NA NA NA NA NA NA NA NA NA NA NANANA NA11/4/2014< 1.0 < 1.0 < 1.0 < 3.0 < 1.0 < 1.0<2.0NANANANANANANANANANANANANANANANA NATABLE 6SUMMARY OF LABORATORY RESULTS FOR GROUNDWATER SAMPLESGPM 3181 (Scotchman #3181)Wilmington, New Hanover County, North CarolinaGCLsMW‐2MW‐3MW‐9MW‐102L Standards Sampling LocationDateBenzeneTolueneEthylbenzeneXylenesMTBEIPENaphthalene1,2‐Dibromoethane (EDB)tert‐Amyl Alcoholtert‐Amylmethyl ethertert‐Butyl Alcoholtert‐Butyl FormateEthyl‐tert‐Butyl EtherEthanolAcetone2‐Butanonen‐Butylbenzenesec‐Butylbenzenetert‐ButylbenzeneIsopropylbenzenep‐Isopropyltoluenen‐Propylbenzene1,3,5‐Trimethylbenzene1,2,4‐Trimethylbenzene1 600 600 500 20 70 60.02 40 128 10 40 47 4,0006,0004,000 70 70 70 70 25 70 400 4005,000 260,000 80,000 50,000 20,000 70,000 6,00050 40,000 12,800 10,000 40,000 47,000 4,000,0006,000,0004,000,000 6,900 8,500 14,750 25,000 11,700 30,000 25,000 25,000TABLE 6SUMMARY OF LABORATORY RESULTS FOR GROUNDWATER SAMPLESGPM 3181 (Scotchman #3181)Wilmington, New Hanover County, North CarolinaGCLs2L Standards3/8/2018<1.0 2.0 5.7 16.7 <1.0 <1.013.6NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA10/9/2019<0.50 <0.50 <0.50 <1.50 <0.50 <0.50 <2.0 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA4/29/2020<0.50 <0.50 0.45 J <1.0 <0.50 <0.50 2.1 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA3/17/2021<0.50 <0.50 <0.50 <1.0 <0.50 <0.50 1.2 <0.50 <20 <10 <20 <5.0 <1.0 <100 15 <10 <0.50 0.46 J <0.50 0.44 J <0.50 1.2 0.63 1.710/28/2021<0.50 <0.50 <0.50 <1.0 <0.50 <0.50 NA <0.50 <20 <10 <20 <5.0 <1.0 <100 NA NA NA NA NA NA NA NA NA NA3/19/2002< 0.5 < 0.5 < 0.5 < 0.5< 10 < 10 NANA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA1/20/2004< 0.5 < 0.5 < 5.0 < 1.5< 1.0 < 1.0 NANA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA6/23/2004< 0.5 < 0.5 < 5.0 < 1.5< 1.0 < 1.0 NANA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA8/18/2004< 0.5 < 0.5 < 5.0 < 1.5< 1.0 < 1.0 NANA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA3/6/2007< 1.0 < 5.0 < 1.0 < 3.0 < 1.0 < 1.0 < 5.0NANANANANANANANANANANANANANANANANA9/26/2007< 1.0 < 5.0 < 1.0 < 3.0 < 1.0 < 1.0 < 5.0NANANANANANANANANANANANANANANANANA3/13/2008<1.0 <5.0 <1.0 <3.0 <1.0 <1.0 <5.0 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA9/29/2008<1.0 <5.0 <1.0 <3.0 <1.0 <1.0 <5.0 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA8/12/2009<1.0 <5.0 <1.0 <3.0 <1.0 <1.0 <5.0 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA3/10/2010<1.0 <5.0 <1.0 <3.0 <1.0 <1.0 <5.0 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA7/20/2018<0.50<0.50<0.50<1.5<0.50<0.50<2.0NANANANANANANANANANANANANANANANANA10/9/2019<0.50 <0.50 <0.50 <1.50<0.50 <0.50 <2.0NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA4/29/2020<0.50 <0.50 <0.50 <1.0<0.50 <0.50 <0.50NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA3/17/2021<0.50 <0.50 <0.50 <1.0<0.50 <0.50 3.9<0.50 <20 <10 <20 <5.0 <1.0 <100<10 <10 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 1.011/16/2001710250 19 1911705NANA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA1/20/2004400290 < 200 77140< 50 NANA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA6/23/20041,100320 < 500 160150< 70 NANA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA8/18/2004530100 < 120 < 3866< 25 NANA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA3/6/2007720140 360 210 < 20 < 20120NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA9/26/200730087 180 290 17 <5.078NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA3/13/2008280330 140 160 <20 <20 <100 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA9/29/200842024 590 400 <1.0 <1.0140NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA8/12/2009350<250800420 <50 <50 <250 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA3/10/2010390100 480 240 <5.0 <5.0220NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA9/28/2010117.0 26 22 <1.0 <1.022NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA1/12/201266<25 270 49 <5.0 <5.087NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA7/25/201213066 390 110 3.8 <2.0120NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA2/15/2013228.3 68 32 <1.0 <1.035NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA11/4/20148.91.7 85 6.2 <1.0 <1.028NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA11/28/201713.24.9 J 197 11.5 J<1.1 NA115NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA1/25/2018147 3030 734 20000.93 J<1.0162NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA7/20/201820.38.0 508 53.4 <2.0 <2.0219NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA10/10/20199.62.9 132 7.0 <0.50 <0.5032.8NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA4/29/20203.33.1 110 36.5 <0.50 <0.5028NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA3/17/2021153.6 110 15.4 <0.50 <0.5092<0.50 18 J <10 <20 <5.0 <1.0 <100 130 4.6 J 3.8 2.4 0.55 16 0.49 J29 1.7 3.310/28/202120 6,300 2,200 11,900<2.5 <2.5 NA <2.5 <100 <50 <100 <25 <5.0 <500 NA NA NA NA NA NA NA NA NA NAMW‐11DMW‐11MW‐12MW‐12 Sampling LocationDateBenzeneTolueneEthylbenzeneXylenesMTBEIPENaphthalene1,2‐Dibromoethane (EDB)tert‐Amyl Alcoholtert‐Amylmethyl ethertert‐Butyl Alcoholtert‐Butyl FormateEthyl‐tert‐Butyl EtherEthanolAcetone2‐Butanonen‐Butylbenzenesec‐Butylbenzenetert‐ButylbenzeneIsopropylbenzenep‐Isopropyltoluenen‐Propylbenzene1,3,5‐Trimethylbenzene1,2,4‐Trimethylbenzene1 600 600 500 20 70 60.02 40 128 10 40 47 4,0006,0004,000 70 70 70 70 25 70 400 4005,000 260,000 80,000 50,000 20,000 70,000 6,00050 40,000 12,800 10,000 40,000 47,000 4,000,0006,000,0004,000,000 6,900 8,500 14,750 25,000 11,700 30,000 25,000 25,000TABLE 6SUMMARY OF LABORATORY RESULTS FOR GROUNDWATER SAMPLESGPM 3181 (Scotchman #3181)Wilmington, New Hanover County, North CarolinaGCLs2L Standards6/23/20041,700 1,000 9,700 5,600< 830 < 830 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA8/18/20041,800 1,400 8,100 7,200 330< 70 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA8/12/20091,600 23,000 3,800 23,000<500 <500 <2,500 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA1/12/2012440 13,000 3,000 17,000<5.0 <5.0 <1,000 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA7/25/2012500 13,000 2,400 14,000<100 <1001,100NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA2/15/201311/4/2014128 7,480 1,770 9,030 <50 <50 1,360NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA11/28/20177/20/2018<25.0 6,340 1,930 9,760 <25.0<25.01,140NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA4/29/202043 7,000 2,400 12,500 <25<25890NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA3/17/202110/28/2021262061083 <5.0 <5.0 NA <5.0 <1,000 <500 <1,000 <250 <50 <5,000 NA NA NA NA NA NA NA NA NA NA3/19/2002 < 0.5 < 0.5 < 0.5 < 0.5 < 10 < 10 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA2/2/2004 < 0.5 < 0.5 < 5.0 < 1.5 < 1.0 < 1.0NANANANANANANANANANANANANANANANANANA6/23/20042.3< 0.5 < 5.0 < 1.5 2.0 < 1.0NANANANANANANANANANANANANANANANANANA8/18/2004 0.80 < 0.50 < 5.0 < 1.5 < 1.0 < 1.0NANANANANANANANANANANANANANANANANANA3/6/2007< 1.0 < 5.0 < 1.0 < 3.0 < 1.0 < 1.0 < 5.0NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA9/26/2007< 1.0 < 5.0 < 1.0 < 3.0 < 1.0 < 1.0 < 5.0NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA3/13/2008<1.0 <5.0 <1.0 <3.0 <1.0 <1.0 <5.0NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA9/29/2008<1.0 <5.0 <1.0<3.0 <1.0 <1.018NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA8/12/2009<1.0 <5.0 <1.0 <3.0 <1.0 <1.0 <5.0NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA3/10/2010<1.0 <5.0 <1.0 <3.0 <1.0 <1.0 <5.0NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA9/28/2010<1.0 <5.0 <1.0 <3.0 <1.0 <1.0 <5.0NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA1/12/2012<1.0 <5.0 <1.0 <3.0 <1.0 <1.0 <5.0NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA7/25/2012< 1.0 < 5.0 < 1.0 < 3.0 < 1.0 < 1.0 < 5.0NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA2/15/2013< 1.0 < 5.0 < 1.0 < 3.0 < 1.0 < 1.0 0.86JNA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA11/4/2014< 1.0 < 1.0 < 1.0 < 3.0 < 1.0 < 1.0 <2.0NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA3/19/2002 < 0.5 < 0.5 < 0.5 < 0.5 < 10 < 10 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA11/28/2017 <0.31 <0.30 <0.36 <0.72 <0.23 NA <1.0 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA7/20/2018<0.50 <0.50 <0.50 <1.5 <0.50 <0.50 <2.0NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA10/9/2019<0.50 <0.50 <0.50 <1.50 <0.50 <0.50 <2.0NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA4/29/2020<0.50 <0.50 <0.50 <1.0 <0.50 <0.50 <0.50NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA3/17/2021<0.50 <0.50 <0.50 <1.0 <0.50 <0.50 0.87 <0.50 <20 <10 <20 <5.0 <1.0 <100 <10 <10 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.507/30/2001 < 0.5 < 0.5 < 0.5 < 0.5 < 5.0NANANANANANANANANANANANANANANANANANANA3/19/2002 < 0.5 < 0.5 < 0.5 < 0.5 < 10 < 10 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA1/20/2004 < 0.5 < 0.5 < 5.0 < 1.5 < 1.0 < 1.0NANANANANANANANANANANANANANANANANANA6/23/2004 < 0.5 < 0.5 < 5.0 < 1.5 < 1.0 < 1.0NANANANANANANANANANANANANANANANANANA9/26/2007< 1.0 < 5.0 < 1.0 < 3.0 < 1.0 < 1.0 < 5.0NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA3/13/2008<1.0 <5.0 <1.0 <3.0 <1.0 <1.0 <5.0NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA9/29/2008<1.0 <5.0 <1.0 <3.0 <1.0 <1.0 <5.0NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA8/12/2009<1.0 <5.0 <1.0 <3.0 <1.0 <1.0 <5.0NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA3/10/2010<1.0 <5.0 <1.0 <3.0 <1.0 <1.0 <5.0NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NASMMW‐1MW‐14MW‐15Product present at thickness of 0.02 feetProduct present at thickness of 0.27 feetProduct present at thickness of 0.04 feetMW‐13 Sampling LocationDateBenzeneTolueneEthylbenzeneXylenesMTBEIPENaphthalene1,2‐Dibromoethane (EDB)tert‐Amyl Alcoholtert‐Amylmethyl ethertert‐Butyl Alcoholtert‐Butyl FormateEthyl‐tert‐Butyl EtherEthanolAcetone2‐Butanonen‐Butylbenzenesec‐Butylbenzenetert‐ButylbenzeneIsopropylbenzenep‐Isopropyltoluenen‐Propylbenzene1,3,5‐Trimethylbenzene1,2,4‐Trimethylbenzene1 600 600 500 20 70 60.02 40 128 10 40 47 4,0006,0004,000 70 70 70 70 25 70 400 4005,000 260,000 80,000 50,000 20,000 70,000 6,00050 40,000 12,800 10,000 40,000 47,000 4,000,0006,000,0004,000,000 6,900 8,500 14,750 25,000 11,700 30,000 25,000 25,000TABLE 6SUMMARY OF LABORATORY RESULTS FOR GROUNDWATER SAMPLESGPM 3181 (Scotchman #3181)Wilmington, New Hanover County, North CarolinaGCLs2L Standards7/30/2001 < 0.5 < 0.5 < 0.5 < 0.5 < 5.0NANANANANANANANANANANANANANANANANANANA3/19/2002 < 0.5 < 0.5 < 0.5 < 0.5 < 10 < 10 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA1/20/2004 < 0.5 < 0.5 < 5.0 < 1.5 < 1.0 < 1.0NANANANANANANANANANANANANANANANANANA6/23/2004 < 0.5 < 0.5 < 5.0 < 1.5 < 1.0 < 1.0NANANANANANANANANANANANANANANANANANA9/26/2007< 1.0 < 5.0 < 1.0 < 3.0 < 1.0 < 1.0 < 5.0NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA3/13/2008<1.0 <5.0 <1.0 <3.0 <1.0 <1.0 <5.0NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA9/29/2008<1.0 <5.0 <1.0 <3.0 <1.0 <1.0 <5.0NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA8/12/2009<1.0 <5.0 3.0 <3.0 <1.0 <1.0 <5.0NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA3/10/2010<1.0 <5.0 <1.0 <3.0 <1.0 <1.0 <5.0NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA7/30/20011.39.1 1.2 7.45.0NANANANANANANANANANANANANANANANANANANA3/19/2002528122696280218< 200 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA1/20/20043801401,000480140< 50 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA6/23/20049.814 < 25 1510 < 5.0NANANANANANANANANANANANANANANANANANA8/18/200477100 110 16032< 10 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA3/6/2007230 1,200140600< 20 < 20 < 100NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA9/26/200729100 64 66 2.6 <1.019NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA3/13/20082638 50 51 <1.0 <1.027NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA9/29/2008<1.0 <5.0 <1.0 9.5 <1.0 <1.09.6NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA8/12/2009<1.0 <5.0 <1.0 <3.0 <1.0 <1.0 <5.0NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA3/10/20102.5<5.0 11 6.0 <1.0 <1.013NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA9/28/2010<1.0 <5.0 3.3 <3.0 <1.0 <1.0 <5.0NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA1/12/20121875 79 290 <1.0 <1.024NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA7/25/2012< 1.0 < 5.0 < 1.0 < 3.0 < 1.0 < 1.0 < 5.0NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA2/15/20132.63.6J 8.7 14 < 1.0 < 1.0 3.8JNA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA11/4/2014< 1.0 < 1.0 < 1.0 < 3.0 < 1.0 < 1.0 <2.0NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA3/19/2002< 0.5 < 0.5 < 0.5 < 0.5< 10 < 10 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA9/26/2007< 1.0 < 5.0 < 1.0 < 3.0 < 1.0 < 1.0 < 5.0NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA3/13/2008<1.0 <5.0 <1.0 <3.0 <1.0 <1.0 <5.0NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA9/29/2008<1.0 <5.0 <1.0 <3.0 <1.0 <1.0 <5.0NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA8/12/2009<1.0 <5.0 <1.0 <3.0 <1.0 <1.0 <5.0NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA3/10/2010<1.0 <5.0 <1.0 <3.0 <1.0 <1.0 <5.0NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA3/19/2002148340 351837< 100 < 100 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA1/20/2004170 6402401,600< 50 < 50 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA8/18/200485360 340980< 50 < 50 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA3/6/20078.4< 5.0 12 22 3.1 < 1.095NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA9/28/2010<1.0 <5.0 16 6.5 <1.0 <1.092NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA1/12/2012<1.0 <5.0 1.4 <3.0 <1.0 <1.015NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA7/25/2012<1.0 <5.0 30 8.6 <1.0 <1.0110NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA2/15/2013<1.0 <5.0 12 4.9 <1.0 <1.039NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA11/4/2014< 1.0 < 1.0 < 1.0 < 3.0 < 1.0 < 1.0 4.7NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NASMMW‐4SMMW‐5SMMW‐3SMMW‐2 Sampling LocationDateBenzeneTolueneEthylbenzeneXylenesMTBEIPENaphthalene1,2‐Dibromoethane (EDB)tert‐Amyl Alcoholtert‐Amylmethyl ethertert‐Butyl Alcoholtert‐Butyl FormateEthyl‐tert‐Butyl EtherEthanolAcetone2‐Butanonen‐Butylbenzenesec‐Butylbenzenetert‐ButylbenzeneIsopropylbenzenep‐Isopropyltoluenen‐Propylbenzene1,3,5‐Trimethylbenzene1,2,4‐Trimethylbenzene1 600 600 500 20 70 60.02 40 128 10 40 47 4,0006,0004,000 70 70 70 70 25 70 400 4005,000 260,000 80,000 50,000 20,000 70,000 6,00050 40,000 12,800 10,000 40,000 47,000 4,000,0006,000,0004,000,000 6,900 8,500 14,750 25,000 11,700 30,000 25,000 25,000TABLE 6SUMMARY OF LABORATORY RESULTS FOR GROUNDWATER SAMPLESGPM 3181 (Scotchman #3181)Wilmington, New Hanover County, North CarolinaGCLs2L Standards3/19/20025671382,020 3,240< 500 < 500NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA8/19/2004110160 310920< 50 < 50NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA3/6/20072875 130 390 < 1.0 < 1.0130NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA9/28/2010<1.0 7.8 2.6 20 <1.0 <1.067NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA1/12/2012<1.0 <5.0 <1.0<3.0 <1.0 <1.07.8NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA7/25/2012< 1.0 < 5.0 < 1.0 < 3.0 < 1.0 < 1.0 < 5.0NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA2/15/20131.51.9J 4.0 28 < 1.0 < 1.014NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA11/4/2014< 1.0 < 1.0 < 1.0 < 3.0 < 1.0 < 1.0 <2.0NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA3/19/20021,0903641,640727839< 500NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA8/18/20043042 140 140 13 < 5.0NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA3/6/20078.382 54 190 < 1.0 < 1.024NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA9/26/20075.544 20 75 <1.0 <1.016NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA3/13/200826190 87 330 <10 <10 <50NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA9/29/20081089 60 220 <1.0 <1.037NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA8/12/20093.147 41 150 <1.0 <1.029NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA3/10/2010<1.0 <5.0 1.2 5.8<1.0 <1.0 <5.0NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA9/28/20102.444 39 160 <1.0 <1.033NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA1/12/20121.124 30 97 <1.0 <1.027NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA7/25/20122.239 65 230 <1.0 <1.055NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA2/15/20131.413 49 140 <1.0 <1.037NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA11/4/2014<1.0 <1.0 25.2 45.3 <1.0 <1.025.3NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA11/28/2017<1.0 0.44 J 19.7 17.1 <0.23 NA14.6NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA7/20/2018<6.2 830 895 4,030<6.2 <6.2453NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA10/10/2019<0.50 0.83 41.3 41.3 <0.50 <0.5036.3NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA4/29/2020<0.50 <0.50 16 7.6 <0.50 <0.508.8NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA3/17/2021<0.50 0.42 J <0.50 3.1 <0.50 <0.50 3.4 <0.50 <20 <10 <20 <5.0 <1.0 <100 <10 <10 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 1.2 4.310/28/2021<0.50 <0.50 <0.50 <1.0 <0.50 <0.50 NA <0.50 <20 <10 <20 <5.0 <1.0 <100 NA NA NA NA NA NA NA NA NA NA3/19/2002< 0.5 < 0.5 < 0.5 < 0.5 < 10 < 10NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA1/25/2018<1.0 <1.0 <1.0<3.0 <1.0 <1.0<5.0 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA3/19/2002< 0.5 < 0.5 < 0.5 < 0.5 < 10 < 10NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA8/18/2004< 0.50 < 0.50 < 5.0 < 1.5 < 1.0 < 1.0NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA3/6/2007< 1.0 < 5.0 < 1.0 < 3.0 < 1.0 < 1.0 < 5.0NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA9/26/2007< 1.0 < 5.0 < 1.0 < 3.0 < 1.0 < 1.0 < 5.0NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA3/13/2008<1.0 <5.0 <1.0 <3.0 <1.0 <1.0 <5.0NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA9/29/2008<1.0 <5.0 <1.0 <3.0 <1.0 <1.0 <5.0NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA8/12/2009<1.0 <5.0 <1.0 <3.0 <1.0 <1.0 <5.0NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA3/10/2010<1.0 <5.0 <1.0 <3.0 <1.0 <1.0 <5.0NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NASMMW‐8SMMW‐6SMMW‐7SMMW‐9 Sampling LocationDateBenzeneTolueneEthylbenzeneXylenesMTBEIPENaphthalene1,2‐Dibromoethane (EDB)tert‐Amyl Alcoholtert‐Amylmethyl ethertert‐Butyl Alcoholtert‐Butyl FormateEthyl‐tert‐Butyl EtherEthanolAcetone2‐Butanonen‐Butylbenzenesec‐Butylbenzenetert‐ButylbenzeneIsopropylbenzenep‐Isopropyltoluenen‐Propylbenzene1,3,5‐Trimethylbenzene1,2,4‐Trimethylbenzene1 600 600 500 20 70 60.02 40 128 10 40 47 4,0006,0004,000 70 70 70 70 25 70 400 4005,000 260,000 80,000 50,000 20,000 70,000 6,00050 40,000 12,800 10,000 40,000 47,000 4,000,0006,000,0004,000,000 6,900 8,500 14,750 25,000 11,700 30,000 25,000 25,000TABLE 6SUMMARY OF LABORATORY RESULTS FOR GROUNDWATER SAMPLESGPM 3181 (Scotchman #3181)Wilmington, New Hanover County, North CarolinaGCLs2L Standards7/30/20011.51.3 7.6 7.6 < 5.0 NANA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA3/19/2002< 0.5 < 0.5 < 0.5 < 0.5 < 10 < 10NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA1/20/2004< 0.5 < 0.5 < 5.0 1.9 < 1.0 < 1.0NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA6/23/2004< 0.5 < 0.5 < 5.0 < 1.5 < 1.0 < 1.0NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA8/18/2004< 0.50 < 0.50 < 5.0 < 1.5 < 1.0 < 1.0NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA3/6/2007< 1.0 < 5.0 < 1.0 < 3.0 < 1.0 < 1.0 < 5.0NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA9/26/2007< 1.0 < 5.0 < 1.0 < 3.0 < 1.0 < 1.0 < 5.0NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA3/13/2008<1.0 <5.0 <1.0<3.0 <1.0 <1.016NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA9/29/2008<1.0 <5.0 <1.0 <3.0 <1.0 <1.0 <5.0NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA8/12/2009<1.0 <5.0 <1.0 <3.0 <1.0 <1.0 <5.0NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA3/10/2010<1.0 <5.0 <1.0 <3.0 <1.0 <1.0 <5.0NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA9/28/2010<1.0 <5.0 <1.0 <3.0 <1.0 <1.0 <5.0NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA1/12/2012<1.0 <5.0 <1.0 <3.0 <1.0 <1.0 <5.0NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA7/25/2012< 1.0 < 5.0 < 1.0 < 3.0 < 1.0 < 1.0 < 5.0NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA2/15/2013< 1.0 < 5.0 < 1.0 < 3.0 < 1.0 < 1.0 < 5.0NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA11/4/2014< 1.0 < 1.0 < 1.0 < 3.0 < 1.0 < 1.0 <2.0NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA1/12/20121704001,400 3,900<1.0 <1.0350NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA7/25/2012300 2,800 1,200 4,500<10 <10350NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA11/28/201718.7 J 1,150 1,050 3,660<4.6 NA471NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA7/20/2018<0.50 <0.50 <0.50 <1.5 <0.50 <0.50 <2.0NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA4/29/2020<251,100 1,400 6,300<25 <25450NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA3/17/20212.2 J360 2501,110<2.5 <2.580<2.5 <100 <50 <100 <25 <5.0 <500 <50 <50 <2.5 <2.5 <2.5 19 <2.5 45 70 30010/28/202114 1,500 620 2,400<5.0 <5.0 NA <5.0 <200 <100 <200 <50 <10 <1,000 NA NA NA NA NA NA NA NA NA NANotes:‐ MTBE ‐ Methyl tertiary butyl ether‐ IPE ‐ Isopropyl ether‐ µg/L ‐ micrograms per liter‐ NA denotes sample was not analyzed for this compound‐ Bold and shaded numbers represent results exceeding 2L Standards‐ BDL denotes below detection limitSMDW‐1SMDW‐1RW‐1 GROUNDWATER MONITORING REPORT GPM 3181 (SCOTCHMAN #181) WILMINGTON, NORTH CAROLINA INCIDENT # 22460 GPM 3181 (SCOTCHMAN #181): GROUNDWATER MONITORING REPORT APPENDIX A HISTORICAL SOIL SAMPLING DATA GROUNDWATER MONITORING REPORT GPM 3181 (SCOTCHMAN #181) WILMINGTON, NORTH CAROLINA INCIDENT # 22460 GPM 3181 (SCOTCHMAN #181): GROUNDWATER MONITORING REPORT APPENDIX B PRE-APPROVAL TASK AUTHORIZATION AND RELEVANT CORRESPONDENCE July 27, 2021 Mr. Rolfe Lann GPM Southeast, LLC 8565 Magellan Parkway, Suite 400 Richmond, VA 23227 Re: Review of Monitoring Report Scotchman #181 (GPM 3181) 5302 Carolina Beach Road Wilmington, NC New Hanover County Incident No. 22460 Dear Mr. Lann: The Wilmington Regional Office – Underground Storage Tank Section – has reviewed the subject report. The UST Section agrees with your consultants’ recommendation to continue with semi-annual groundwater sampling. Also, investigate means for the removal of the free product. The monitoring wells were last sampled in March 2021 and should be resampled October/November 2021. Please call me at (910) 796-7396 if you have any questions. Sincerely, Steve Kay Environmental Engineer Wilmington Regional Office UST Section, Division of Waste Management, NCDEQ cc: CES of NC, PLLC - Roanoke WiRO-UST Site Name City / County /New Hanover Incident #22460 Resp Pty Name / Contact /Incident Mgr Region WIL RP Type (Owner/Operator / Landowner / Attny-in-fact)Change Order?Prev. TA #40 Consultant / Project Mgr /Allison Streams Telephone / Fax Number /Task Authorization Number:41 ChangeOrd: Project Mgr Email Site Risk / Rank / Abatement:H195D RRA Date:6/16/2016 Proposal# / Scope Dates /% Commercial (C=100%, NC=0%, Both=1%-99%) Has STF Eligibility Been Determined? (Y/N)Site Status (Active or NFA Date) With Claim: [ ] All Main Consultant/Contractor invoices attached?[ ] Proof of payment attached directly to the front of each invoice? w Important: The date of reimbursement is dependent on the Trust Fund balance. There may be a delay in the reimbursement of claims for work under this ePATA.3rd Pty Ded?Task #Lab / SubCode RO AuthProposed Rate/Price (Consultant)CO AuthProposed Task Subtotal (Consultant) Preapproved Subtotal (UST Section) Claimed Amount3 (Consultant) 2.087 2 /well y $50.00 y $100.00 $100.00 / 2.281 3 /sock y $30.00 y $90.00 $90.00 / 2.290 3 /cost y $10.00 y $30.00 $30.00 / 2.300 1 /drum y $50.00 y $50.00 $50.00 / 4.031 7 /well 5 $110.00 y $770.00 $550.00 / 4.090 #240 7 /sample 5 $88.00 y $616.00 $440.00 / 4.090 #810 2 /well y $10.00 y $20.00 $20.00 / 4.091 1 /event y $150.00 y $150.00 $150.00 / 6.022 1 /report y $500.00 y $500.00 $500.00 / 6.091 1 /report y $900.00 y $900.00 $900.00 / 12.050 3 /trip y $250.00 y $750.00 $750.00 / // // // // // // // // // // // // // // // // Requested Preapproved Claimed3 TOTAL:$3,976.00 $3,580.00 TOTAL: Total Standard Costs (Not Third Party)$3,976.00 $3,580.00 Total Standard Costs Total applied as Third Party Deductible/Damage Costs $0.00 $0.00 Total Third Pty Costs Process Tracking (Date) TA Submittal:8/2/21 by:(PM)(Reserved for RO) RO Review:8/10/21 by:(IM)Joint UST Preapproval Confirmed By:Date1 8/11/2021 CO Review:8/11/21 by:(STF)RP or Designee Receipt Confirmed By:Date 4 1 - This ePATA expires one year from the Joint UST Preapproval date. This does not extend, alter, or supersede any regulatory deadlines (e.g., NORR's, NOV's, Enforcements, etc.) 2 - THE ONE YEAR STATUTE OF LIMITATIONS APPLIES TO EACH INDIVIDUAL TASK. Costs must be claimed within one year of completion of that task to be reimbursable. 3 - Only Tasks included on this ePATA may be claimed. Do not include other Tasks or claimed costs (i.e., Claim preparation) that were not preapproved or the claim will be returned. 4 - Preapproval is not valid (i.e., claimable) until receipt is signed as 'Confirmed' by the RP or their designee and returned to the Trust Fund within a week of approval. Signature indicates acknowledgement of the tasks and amounts approved. Any objections/appeals must be submitted via Change Order prior to work proceeding. Scope/cost negotiations do not supersede other regulatory deadlines as described in #1 above. Also, any ePATA that has been signed as 'Confirmed' by both the UST Section and RP is not to be modified without written consent by all signatories. 5 - Tasks approved on Directed - CAB Only ePATAs must be performed in accordance with all applicable rules, statutes, and RRD Task Scopes of Work to be reimbursed in full. DWM/UST ePATA 8/1/2020 DIRECTED COSTS Wilmington (Must Complete with Claim Submittal)(See Instructions / RRD for Tasks requiring Preapproval / Task Authorization) Owner/Operator 980-819-9333 (Reserved for Incident Manager) PREAPPROVAL / TASK AUTHORIZATION GPM 3181 (Scotchman #181) Note: This Electronic Preapproval Task Authorization (ePATA) shall be used to receive preapproval from the UST Section. A proposal,including maps and figures,must be attached to elaborate on the costs for the tasks listed below that describes the scope of work and the rationale for theproposed activities.If, following completion ofthis ePATA, you discover that unexpected tasks must be performed, incurring costs for tasks not originally included with this form, you must complete and submit a separate ePATA request designated as a "Change Order"in the provided space above prior to conducting those tasks. Include a copy of the prior ePATA form for confirmation. Please attach this form to the cover of the corresponding claim when requesting reimbursement. IMPORTANT:Only one claim may be submitted per ePATA and all work on the ePATA must have been completed within 12 months of the completion date of the FIRST completed task to remain within the Statute of Limitations. All ePATAs submitted within a claim are closed with that claim, and may not be re-used ina separate submittal,evenfor costs or tasks that were not originally claimed. Final reimbursement of costs associated with the Total Claimed amount below may be affected by the eligibility status of the site (i.e., deductibles, apportionment, etc.), and the documentary validation of incurred costs as reasonable and necessary expenses per 15A NCAC 2P .0402 and .0404. sak HB (Initials) AES Proposed Units / Type (Consultant) Steve Kay activeYES 41 8/2/2021-12/30/2021 540-343-6259 Dates of Work (Consultant) Started1 / Completed2 FINAL REIMBURSEMENT 100.00% NO astreams.cesncpllc@gmail.com GPM Southeast, LLC Rolfe Lann CES of NC, PLLC ELECTRONIC PREAPPROVAL TASK AUTHORIZATION FORM Dept of Environmental Quality -Division of Waste Management Do not sample MW-15 and MW-11D 08/12/2021 GROUNDWATER MONITORING REPORT GPM 3181 (SCOTCHMAN #181) WILMINGTON, NORTH CAROLINA INCIDENT # 22460 GPM 3181 (SCOTCHMAN #181): GROUNDWATER MONITORING REPORT APPENDIX C GROUNDWATER SAMPLING LOGS Job Name:GPM 3181 Page: Location:Wilmington NC Date: or Sample ID:Purge Time:Sample Time: Weather: Description of Measuring Point (MP):TOC Water Column in well: Height of MP above/below land surface:Gals/ft: Total Depth of Well below MP:11.88 Diameter of Well (inches): Depth to Water:4.97 Gallons in well: Evacuation Method:Bail out Gallons Purged: Color:Odor:Temp: Sampling Method and Materials:Bail using dedicated PVC bailer, new nitrile gloves and colorless nylon rope. pH (SU)Temperature (°C)ORP (mV)Turbidity (NTU) 6.22 25.44 379 21.8 Three Volumes 6.07 26.30 372 763.0 Remarks Sampled By James Coleman 840 0.163 2 1.17 Compounds Sampled Container Preservative 6200B 40mL Glass Vials HCl Sample 0.407 1.51 Sampling Data One Volume Two Volumes (circle one) Purging Data / Field Parameters Purge Volumes Conductivity (mS/cm)D.O. (mg/L) Zero Volume 0.337 2.79 Appearance: CES of NC, PLLC Water Sampling Log MW-11 Sunny, Upper 60s Evacuation Data 12/28/21 1 of 1 3.37 Groundwater Surface Water Job Name:GPM 3181 Page: Location:Wilmington NC Date: or Sample ID:Purge Time:Sample Time: Weather: Description of Measuring Point (MP):TOC Water Column in well: Height of MP above/below land surface:Gals/ft: Total Depth of Well below MP:12.86 Diameter of Well (inches): Depth to Water:4.60 Gallons in well: Evacuation Method:Bail out Gallons Purged: Color:Odor:Temp: Sampling Method and Materials:Bail using dedicated PVC bailer, new nitrile gloves and colorless nylon rope. pH (SU)Temperature (°C)ORP (mV)Turbidity (NTU) 6.53 24.11 446 176.0 Three Volumes 6.71 24.09 542 114.0 Remarks Sampled By James Coleman Compounds Sampled Container Preservative 6200B 40mL Glass Vials HCl Sample 0.318 1.48 Sampling Data One Volume Two Volumes Purge Volumes Conductivity (mS/cm)D.O. (mg/L) Zero Volume 0.486 2.85 0.163 2 1.34 4 Purging Data / Field Parameters Appearance: MW-12 855 Sunny, Upper 60s Evacuation Data CES of NC, PLLC Water Sampling Log 1 of 1 12/28/21 Groundwater Surface Water (circle one) Job Name:GPM 3181 Page: Location:Wilmington NC Date: or Sample ID:Purge Time:Sample Time: Weather: Description of Measuring Point (MP):TOC Water Column in well: Height of MP above/below land surface:Gals/ft: Total Depth of Well below MP:12.88 Diameter of Well (inches): Depth to Water:4.54 Gallons in well: Evacuation Method:Bail out Gallons Purged: Color:Odor:Temp: Sampling Method and Materials:Bail using dedicated PVC bailer, new nitrile gloves and colorless nylon rope. pH (SU)Temperature (°C)ORP (mV)Turbidity (NTU) 6.54 25.24 516 75.3 Three Volumes 6.43 25.91 384 305.0 Remarks Sampled By James Coleman Compounds Sampled Container Preservative 6200B 40mL Glass Vials HCl Sample 0.210 2.53 Sampling Data One Volume Two Volumes Purge Volumes Conductivity (mS/cm)D.O. (mg/L) Zero Volume 0.167 1.42 0.163 2 1.36 4.07 Purging Data / Field Parameters Appearance: MW-13 820 Sunny, Upper 60s Evacuation Data CES of NC, PLLC Water Sampling Log 1 of 1 12/28/21 Groundwater Surface Water (circle one) Job Name:GPM 3181 Page: Location:Wilmington NC Date: or Sample ID:Purge Time:Sample Time: Weather: Description of Measuring Point (MP):TOC Water Column in well: Height of MP above/below land surface:Gals/ft: Total Depth of Well below MP:12.43 Diameter of Well (inches): Depth to Water:5.11 Gallons in well: Evacuation Method:Bail out Gallons Purged: Color:Odor:Temp: Sampling Method and Materials:Bail using dedicated PVC bailer, new nitrile gloves and colorless nylon rope. pH (SU)Temperature (°C)ORP (mV)Turbidity (NTU) 6.55 25.12 5.34 0.0 Three Volumes 5.35 26.12 574 760.0 Remarks Sampled By James Coleman Compounds Sampled Container Preservative 6200B 40mL Glass Vials HCl Sample 0.181 1.80 Sampling Data One Volume Two Volumes Purge Volumes Conductivity (mS/cm)D.O. (mg/L) Zero Volume 0.154 5.15 0.163 2 1.19 3.57 Purging Data / Field Parameters Appearance: SMMW-7 820 Sunny, Upper 60s Evacuation Data CES of NC, PLLC Water Sampling Log 1 of 1 12/28/21 Groundwater Surface Water (circle one) Job Name:GPM 3181 Page: Location:Wilmington NC Date: or Sample ID:Purge Time:Sample Time: Weather: Description of Measuring Point (MP):TOC Water Column in well: Height of MP above/below land surface:Gals/ft: Total Depth of Well below MP:11.92 Diameter of Well (inches): Depth to Water:4.30 Gallons in well: Evacuation Method:Bail out Gallons Purged: Color:Odor:Temp: Sampling Method and Materials:Bail using dedicated PVC bailer, new nitrile gloves and colorless nylon rope. pH (SU)Temperature (°C)ORP (mV)Turbidity (NTU) 6.57 23.68 436 279.0 Three Volumes 6.27 24.75 499 984.0 Remarks Sampled By James Coleman Compounds Sampled Container Preservative 6200B 40mL Glass Vials HCl Sample 0.399 2.66 Sampling Data One Volume Two Volumes Purge Volumes Conductivity (mS/cm)D.O. (mg/L) Zero Volume 0.413 3.89 0.163 2 5.03 15.09 Purging Data / Field Parameters Appearance: RW-1 800 Sunny, Upper 60s Evacuation Data CES of NC, PLLC Water Sampling Log 1 of 1 12/28/21 Groundwater Surface Water (circle one) GROUNDWATER MONITORING REPORT GPM 3181 (SCOTCHMAN #181) WILMINGTON, NORTH CAROLINA INCIDENT # 22460 GPM 3181 (SCOTCHMAN #181): GROUNDWATER MONITORING REPORT APPENDIX D LABORATORY REPORTS AND CHAIN OF CUSTODY DOCUMENTS The electronic signature above is the equivalent of a handwritten signature. This report shall not be reproduced,except in its entirety,without the written approval of Pace Analytical Services,LLC. Pace Analytical Services,LLC (formerly Shealy Environmental Services,Inc.) 106 Vantage Point Drive West Columbia,SC 29172 Tel:803-791-9700 Fax:803-791-9111 www.pacelabs.com Report of Analysis Crawford Environmental Services 1701 Shenandoah Ave.,NW Roanoke,VA 24017 Attention:Allison Streams Project Name:GPM 3181 Lot Number:WJ30034 Date Completed:11/16/2021 11/17/2021 10:05 AM Approved and released by: Project Manager II:Lucas Odom Page 1 of 23 PACE ANALYTICAL SERVICES,LLC SC DHEC No:32010001 NELAC No:E87653 NC DENR No:329 NC Field Parameters No:5639 Pace Analytical Services,LLC (formerly Shealy Environmetal Services,Inc.) 106 Vantage Point Drive West Columbia,SC 29172 (803)791-9700 Fax (803)791-9111 www.pacelabs.com Case Narrative Crawford Environmental Services Lot Number:WJ30034 This Report of Analysis contains the analytical result(s)for the sample(s)listed on the Sample Summary following this Case Narrative.The sample receiving date is documented in the header information associated with each sample. All results listed in this report relate only to the samples that are contained within this report. Sample receipt,sample analysis,and data review have been performed in accordance with the most current approved The NELAC Institute (TNI)standards,the Pace Analytical Services,LLC ("Pace") Laboratory Quality Manual,standard operating procedures (SOPs),and Pace policies.Any exceptions to the TNI standards,the Laboratory Quality Manual,SOPs or policies are qualified on the results page or discussed below. Pace is a TNI accredited laboratory;however,the following analyses are currently not listed on our TNI scope of accreditation: Biological Tissue:All,Non-Potable Water:SGT-HEM EPA 1664B,Silica EPA 200.7,Boron,Calcium, Silicon,Strontium EPA 200.8,Bicarbonate,Carbonate,and Hydroxide Alkalinity SM 2320 B-2011,Fecal Coliform SM 9221 C E-2006 &SM 9222D-2006,Strontium SW-846 6010D,VOC SM 6200 B-2011, Drinking Water:VOC (excluding BTEX,MTBE,Naphthalene,&1,2-dichloroethane)EPA 524.2,Solid Chemical Material:TOC Walkley-Black. If you have any questions regarding this report please contact the Pace Project Manager listed on the cover page. VOCs by GC/MS Reanalysis of the following sample was performed outside of the analytical holding time:WJ30034-003. The sample was initially analyzed within hold time at a 50x but needed to be rerun at a lower dilution.Re- analysis was performed at a 10x with concurring results. Reanalysis of the following sample was performed outside of the analytical holding time for Ethylbenzene, Toluene,o-Xylene,m&p-Xylene due to carryover:WJ30034-005. The following sample required a dilution which was performed outside of the analytical holding time for Ethylbenzene,Toluene,o-Xylene,m&p-Xylene :WJ30034-002. Page 2 of 23 PACE ANALYTICAL SERVICES, LLC Sample Summary Crawford Environmental Services Lot Number: WJ30034 Sample Number Sample ID Matrix Date Sampled Date Received 001 10/28/2021 0840MW-11 Aqueous 10/29/2021 002 10/28/2021 0855MW-12 Aqueous 10/29/2021 003 10/28/2021 0820MW-13 Aqueous 10/29/2021 004 10/28/2021 0915SMMW-7 Aqueous 10/29/2021 005 10/28/2021 0800RW-1 Aqueous 10/29/2021 (5 samples) 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 3 of 23 PACE ANALYTICAL SERVICES, LLC Detection Summary Crawford Environmental Services Lot Number: WJ30034 Sample Sample ID Matrix Parameter Method Result Q Units Page 002 MW-12 Aqueous Benzene SM 6200B-20 ug/L 6 002 MW-12 Aqueous Ethylbenzene SM 6200B-2200 H ug/L 6 002 MW-12 Aqueous Toluene SM 6200B-6300 H ug/L 6 002 MW-12 Aqueous m+p - Xylenes SM 6200B-7900 H ug/L 6 002 MW-12 Aqueous o - Xylenes SM 6200B-4000 H ug/L 6 003 MW-13 Aqueous Benzene SM 6200B-26 H ug/L 7 003 MW-13 Aqueous Ethylbenzene SM 6200B-610 H ug/L 7 003 MW-13 Aqueous Toluene SM 6200B-20 H ug/L 7 003 MW-13 Aqueous m+p - Xylenes SM 6200B-79 H ug/L 7 003 MW-13 Aqueous o - Xylenes SM 6200B-4.8 HJ ug/L 7 005 RW-1 Aqueous Benzene SM 6200B-14 ug/L 9 005 RW-1 Aqueous Ethylbenzene SM 6200B-620 H ug/L 9 005 RW-1 Aqueous Toluene SM 6200B-1500 H ug/L 9 005 RW-1 Aqueous m+p - Xylenes SM 6200B-1300 H ug/L 9 005 RW-1 Aqueous o - Xylenes SM 6200B-1100 H ug/L 9 (15 detections) 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 4 of 23 Description:Matrix: Date Received: Client:Laboratory ID: Date Sampled: Crawford Environmental Services MW-11 WJ30034-001 10/28/2021 0840 10/29/2021 Aqueous Volatile Organic Compounds by GC/MS Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch 1 SM 6200B-SM 6200B-2011 1 11/11/2021 1254 CAW 22161 AnalyticalCAS Parameter Number Method Result Q LOQ Units Run DL tert-Amyl alcohol (TAA)75-85-4 SM 6200B-2011 ND 1ug/L8.020 tert-Amyl methyl ether (TAME)994-05-8 SM 6200B-2011 ND 1ug/L0.4010 tert-Butyl formate (TBF)762-75-4 SM 6200B-2011 ND 1ug/L4.05.0 Ethanol 64-17-5 SM 6200B-2011 ND 1ug/L40100 Ethyl-tert-butyl ether (ETBE)637-92-3 SM 6200B-2011 ND 1ug/L0.401.0 tert-butyl alcohol (TBA)75-65-0 SM 6200B-2011 ND 1ug/L8.020 AcceptanceRun 1 Surrogate Q % Recovery Limits 1,2-Dichloroethane-d4 94 70-130 Bromofluorobenzene 99 70-130 Toluene-d8 96 70-130 Volatile Organic Compounds by GC/MS Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch 1 SM 6200B-SM 6200B-2011 1 11/05/2021 1657 BWS 21461 AnalyticalCAS Parameter Number Method Result Q LOQ Units Run DL Benzene 71-43-2 SM 6200B-2011 ND 1ug/L0.400.50 Chlorobenzene 108-90-7 SM 6200B-2011 ND 1ug/L0.400.50 1,2-Dibromoethane (EDB)106-93-4 SM 6200B-2011 ND 1ug/L0.400.50 1,2-Dichlorobenzene 95-50-1 SM 6200B-2011 ND 1ug/L0.400.50 1,3-Dichlorobenzene 541-73-1 SM 6200B-2011 ND 1ug/L0.400.50 1,4-Dichlorobenzene 106-46-7 SM 6200B-2011 ND 1ug/L0.400.50 Diisopropyl ether (IPE)108-20-3 SM 6200B-2011 ND 1ug/L0.400.50 Ethylbenzene 100-41-4 SM 6200B-2011 ND 1ug/L0.400.50 Methyl tertiary butyl ether (MTBE)1634-04-4 SM 6200B-2011 ND 1ug/L0.400.50 Toluene 108-88-3 SM 6200B-2011 ND 1ug/L0.400.50 m+p - Xylenes 179601-23-1 SM 6200B-2011 ND 1ug/L0.400.50 o - Xylenes 95-47-6 SM 6200B-2011 ND 1ug/L0.400.50 AcceptanceRun 1 Surrogate Q % Recovery Limits 1,2-Dichloroethane-d4 97 70-130 Bromofluorobenzene 77 70-130 Toluene-d8 96 70-130 J = Estimated result < LOQ and > DL_ LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range P = The RPD between two GC columns exceeds 40%ND = Not detected at or above the DL N = Recovery is out of criteria H = Out of holding time Q = Surrogate failure L = LCS/LCSD failure S = MS/MSD failure DL = Detection Limit W = Reported on wet weight basis 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 5 of 23 Description:Matrix: Date Received: Client:Laboratory ID: Date Sampled: Crawford Environmental Services MW-12 WJ30034-002 10/28/2021 0855 10/29/2021 Aqueous Volatile Organic Compounds by GC/MS Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch 1 SM 6200B-SM 6200B-2011 5 11/11/2021 1423 CAW 22161 AnalyticalCAS Parameter Number Method Result Q LOQ Units Run DL tert-Amyl alcohol (TAA)75-85-4 SM 6200B-2011 ND 1ug/L40100 tert-Amyl methyl ether (TAME)994-05-8 SM 6200B-2011 ND 1ug/L2.050 tert-Butyl formate (TBF)762-75-4 SM 6200B-2011 ND 1ug/L2025 Ethanol 64-17-5 SM 6200B-2011 ND 1ug/L200500 Ethyl-tert-butyl ether (ETBE)637-92-3 SM 6200B-2011 ND 1ug/L2.05.0 tert-butyl alcohol (TBA)75-65-0 SM 6200B-2011 ND 1ug/L40100 AcceptanceRun 1 Surrogate Q % Recovery Limits 1,2-Dichloroethane-d4 94 70-130 Bromofluorobenzene 102 70-130 Toluene-d8 96 70-130 Volatile Organic Compounds by GC/MS Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch 1 SM 6200B-SM 6200B-2011 5 11/05/2021 1812 BWS 21461 2 SM 6200B-SM 6200B-2011 100 11/12/2021 1758 CAW 22332 AnalyticalCAS Parameter Number Method Result Q LOQ Units Run DL Benzene 71-43-2 SM 6200B-2011 20 1ug/L2.02.5 Chlorobenzene 108-90-7 SM 6200B-2011 ND 1ug/L2.02.5 1,2-Dibromoethane (EDB)106-93-4 SM 6200B-2011 ND 1ug/L2.02.5 1,2-Dichlorobenzene 95-50-1 SM 6200B-2011 ND 1ug/L2.02.5 1,3-Dichlorobenzene 541-73-1 SM 6200B-2011 ND 1ug/L2.02.5 1,4-Dichlorobenzene 106-46-7 SM 6200B-2011 ND 1ug/L2.02.5 Diisopropyl ether (IPE)108-20-3 SM 6200B-2011 ND 1ug/L2.02.5 Ethylbenzene 100-41-4 SM 6200B-2011 2200 H 2ug/L4050 Methyl tertiary butyl ether (MTBE)1634-04-4 SM 6200B-2011 ND 1ug/L2.02.5 Toluene 108-88-3 SM 6200B-2011 6300 H 2ug/L4050 m+p - Xylenes 179601-23-1 SM 6200B-2011 7900 H 2ug/L4050 o - Xylenes 95-47-6 SM 6200B-2011 4000 H 2ug/L4050 AcceptanceAcceptanceRun 2Run 1 Surrogate Q % Recovery Limits % Recovery LimitsQ 1,2-Dichloroethane-d4 95 70-130 H 108 70-130 Bromofluorobenzene 93 70-130 H 105 70-130 Toluene-d8 102 70-130 H 101 70-130 J = Estimated result < LOQ and > DL_ LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range P = The RPD between two GC columns exceeds 40%ND = Not detected at or above the DL N = Recovery is out of criteria H = Out of holding time Q = Surrogate failure L = LCS/LCSD failure S = MS/MSD failure DL = Detection Limit W = Reported on wet weight basis 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 6 of 23 Description:Matrix: Date Received: Client:Laboratory ID: Date Sampled: Crawford Environmental Services MW-13 WJ30034-003 10/28/2021 0820 10/29/2021 Aqueous Volatile Organic Compounds by GC/MS Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch 1 SM 6200B-SM 6200B-2011 50 11/11/2021 1613 CAW 22161 AnalyticalCAS Parameter Number Method Result Q LOQ Units Run DL tert-Amyl alcohol (TAA)75-85-4 SM 6200B-2011 ND 1ug/L4001000 tert-Amyl methyl ether (TAME)994-05-8 SM 6200B-2011 ND 1ug/L20500 tert-Butyl formate (TBF)762-75-4 SM 6200B-2011 ND 1ug/L200250 Ethanol 64-17-5 SM 6200B-2011 ND 1ug/L20005000 Ethyl-tert-butyl ether (ETBE)637-92-3 SM 6200B-2011 ND 1ug/L2050 tert-butyl alcohol (TBA)75-65-0 SM 6200B-2011 ND 1ug/L4001000 AcceptanceRun 1 Surrogate Q % Recovery Limits 1,2-Dichloroethane-d4 90 70-130 Bromofluorobenzene 96 70-130 Toluene-d8 96 70-130 Volatile Organic Compounds by GC/MS Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch 2 SM 6200B-SM 6200B-2011 10 11/12/2021 1648 CAW 22332 AnalyticalCAS Parameter Number Method Result Q LOQ Units Run DL Benzene 71-43-2 SM 6200B-2011 26 H 2ug/L4.05.0 Chlorobenzene 108-90-7 SM 6200B-2011 ND H 2ug/L4.05.0 1,2-Dibromoethane (EDB)106-93-4 SM 6200B-2011 ND H 2ug/L4.05.0 1,2-Dichlorobenzene 95-50-1 SM 6200B-2011 ND H 2ug/L4.05.0 1,3-Dichlorobenzene 541-73-1 SM 6200B-2011 ND H 2ug/L4.05.0 1,4-Dichlorobenzene 106-46-7 SM 6200B-2011 ND H 2ug/L4.05.0 Diisopropyl ether (IPE)108-20-3 SM 6200B-2011 ND H 2ug/L4.05.0 Ethylbenzene 100-41-4 SM 6200B-2011 610 H 2ug/L4.05.0 Methyl tertiary butyl ether (MTBE)1634-04-4 SM 6200B-2011 ND H 2ug/L4.05.0 Toluene 108-88-3 SM 6200B-2011 20 H 2ug/L4.05.0 m+p - Xylenes 179601-23-1 SM 6200B-2011 79 H 2ug/L4.05.0 o - Xylenes 95-47-6 SM 6200B-2011 4.8 HJ 2ug/L4.05.0 AcceptanceRun 2 Surrogate Q % Recovery Limits 1,2-Dichloroethane-d4 H 107 70-130 Bromofluorobenzene H 98 70-130 Toluene-d8 H 99 70-130 J = Estimated result < LOQ and > DL_ LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range P = The RPD between two GC columns exceeds 40%ND = Not detected at or above the DL N = Recovery is out of criteria H = Out of holding time Q = Surrogate failure L = LCS/LCSD failure S = MS/MSD failure DL = Detection Limit W = Reported on wet weight basis 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 7 of 23 Description:Matrix: Date Received: Client:Laboratory ID: Date Sampled: Crawford Environmental Services SMMW-7 WJ30034-004 10/28/2021 0915 10/29/2021 Aqueous Volatile Organic Compounds by GC/MS Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch 1 SM 6200B-SM 6200B-2011 1 11/11/2021 1317 CAW 22161 AnalyticalCAS Parameter Number Method Result Q LOQ Units Run DL tert-Amyl alcohol (TAA)75-85-4 SM 6200B-2011 ND 1ug/L8.020 tert-Amyl methyl ether (TAME)994-05-8 SM 6200B-2011 ND 1ug/L0.4010 tert-Butyl formate (TBF)762-75-4 SM 6200B-2011 ND 1ug/L4.05.0 Ethanol 64-17-5 SM 6200B-2011 ND 1ug/L40100 Ethyl-tert-butyl ether (ETBE)637-92-3 SM 6200B-2011 ND 1ug/L0.401.0 tert-butyl alcohol (TBA)75-65-0 SM 6200B-2011 ND 1ug/L8.020 AcceptanceRun 1 Surrogate Q % Recovery Limits 1,2-Dichloroethane-d4 93 70-130 Bromofluorobenzene 96 70-130 Toluene-d8 96 70-130 Volatile Organic Compounds by GC/MS Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch 1 SM 6200B-SM 6200B-2011 1 11/05/2021 1722 BWS 21461 AnalyticalCAS Parameter Number Method Result Q LOQ Units Run DL Benzene 71-43-2 SM 6200B-2011 ND 1ug/L0.400.50 Chlorobenzene 108-90-7 SM 6200B-2011 ND 1ug/L0.400.50 1,2-Dibromoethane (EDB)106-93-4 SM 6200B-2011 ND 1ug/L0.400.50 1,2-Dichlorobenzene 95-50-1 SM 6200B-2011 ND 1ug/L0.400.50 1,3-Dichlorobenzene 541-73-1 SM 6200B-2011 ND 1ug/L0.400.50 1,4-Dichlorobenzene 106-46-7 SM 6200B-2011 ND 1ug/L0.400.50 Diisopropyl ether (IPE)108-20-3 SM 6200B-2011 ND 1ug/L0.400.50 Ethylbenzene 100-41-4 SM 6200B-2011 ND 1ug/L0.400.50 Methyl tertiary butyl ether (MTBE)1634-04-4 SM 6200B-2011 ND 1ug/L0.400.50 Toluene 108-88-3 SM 6200B-2011 ND 1ug/L0.400.50 m+p - Xylenes 179601-23-1 SM 6200B-2011 ND 1ug/L0.400.50 o - Xylenes 95-47-6 SM 6200B-2011 ND 1ug/L0.400.50 AcceptanceRun 1 Surrogate Q % Recovery Limits 1,2-Dichloroethane-d4 100 70-130 Bromofluorobenzene 84 70-130 Toluene-d8 108 70-130 J = Estimated result < LOQ and > DL_ LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range P = The RPD between two GC columns exceeds 40%ND = Not detected at or above the DL N = Recovery is out of criteria H = Out of holding time Q = Surrogate failure L = LCS/LCSD failure S = MS/MSD failure DL = Detection Limit W = Reported on wet weight basis 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 8 of 23 Description:Matrix: Date Received: Client:Laboratory ID: Date Sampled: Crawford Environmental Services RW-1 WJ30034-005 10/28/2021 0800 10/29/2021 Aqueous Volatile Organic Compounds by GC/MS Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch 1 SM 6200B-SM 6200B-2011 10 11/11/2021 1507 CAW 22161 AnalyticalCAS Parameter Number Method Result Q LOQ Units Run DL tert-Amyl alcohol (TAA)75-85-4 SM 6200B-2011 ND 1ug/L80200 tert-Amyl methyl ether (TAME)994-05-8 SM 6200B-2011 ND 1ug/L4.0100 tert-Butyl formate (TBF)762-75-4 SM 6200B-2011 ND 1ug/L4050 Ethanol 64-17-5 SM 6200B-2011 ND 1ug/L4001000 Ethyl-tert-butyl ether (ETBE)637-92-3 SM 6200B-2011 ND 1ug/L4.010 tert-butyl alcohol (TBA)75-65-0 SM 6200B-2011 ND 1ug/L80200 AcceptanceRun 1 Surrogate Q % Recovery Limits 1,2-Dichloroethane-d4 92 70-130 Bromofluorobenzene 97 70-130 Toluene-d8 96 70-130 Volatile Organic Compounds by GC/MS Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch 1 SM 6200B-SM 6200B-2011 10 11/05/2021 1837 BWS 21461 2 SM 6200B-SM 6200B-2011 10 11/12/2021 1711 CAW 22332 AnalyticalCAS Parameter Number Method Result Q LOQ Units Run DL Benzene 71-43-2 SM 6200B-2011 14 1ug/L4.05.0 Chlorobenzene 108-90-7 SM 6200B-2011 ND 1ug/L4.05.0 1,2-Dibromoethane (EDB)106-93-4 SM 6200B-2011 ND 1ug/L4.05.0 1,2-Dichlorobenzene 95-50-1 SM 6200B-2011 ND 1ug/L4.05.0 1,3-Dichlorobenzene 541-73-1 SM 6200B-2011 ND 1ug/L4.05.0 1,4-Dichlorobenzene 106-46-7 SM 6200B-2011 ND 1ug/L4.05.0 Diisopropyl ether (IPE)108-20-3 SM 6200B-2011 ND 1ug/L4.05.0 Ethylbenzene 100-41-4 SM 6200B-2011 620 H 2ug/L4.05.0 Methyl tertiary butyl ether (MTBE)1634-04-4 SM 6200B-2011 ND 1ug/L4.05.0 Toluene 108-88-3 SM 6200B-2011 1500 H 2ug/L4.05.0 m+p - Xylenes 179601-23-1 SM 6200B-2011 1300 H 2ug/L4.05.0 o - Xylenes 95-47-6 SM 6200B-2011 1100 H 2ug/L4.05.0 AcceptanceAcceptanceRun 2Run 1 Surrogate Q % Recovery Limits % Recovery LimitsQ 1,2-Dichloroethane-d4 92 70-130 H 103 70-130 Bromofluorobenzene 90 70-130 H 94 70-130 Toluene-d8 99 70-130 H 96 70-130 J = Estimated result < LOQ and > DL_ LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range P = The RPD between two GC columns exceeds 40%ND = Not detected at or above the DL N = Recovery is out of criteria H = Out of holding time Q = Surrogate failure L = LCS/LCSD failure S = MS/MSD failure DL = Detection Limit W = Reported on wet weight basis 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 9 of 23 QC Summary 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 10 of 23 Volatile Organic Compounds by GC/MS - MB Batch:Prep Method: Sample ID:WQ21461-001 21461 SM 6200B-2011 Analytical Method:SM 6200B-2011 Matrix:Aqueous Parameter Result Q LOQ DL Units Analysis DateDil Benzene ND 11/05/2021 10110.50 0.40 ug/L1 Chlorobenzene ND 11/05/2021 10110.50 0.40 ug/L1 1,2-Dibromoethane (EDB)ND 11/05/2021 10110.50 0.40 ug/L1 1,2-Dichlorobenzene ND 11/05/2021 10110.50 0.40 ug/L1 1,3-Dichlorobenzene ND 11/05/2021 10110.50 0.40 ug/L1 1,4-Dichlorobenzene ND 11/05/2021 10110.50 0.40 ug/L1 Diisopropyl ether (IPE)ND 11/05/2021 10110.50 0.40 ug/L1 Ethylbenzene ND 11/05/2021 10110.50 0.40 ug/L1 Methyl tertiary butyl ether (MTBE)ND 11/05/2021 10110.50 0.40 ug/L1 Toluene ND 11/05/2021 10110.50 0.40 ug/L1 m+p - Xylenes ND 11/05/2021 10110.50 0.40 ug/L1 o - Xylenes ND 11/05/2021 10110.50 0.40 ug/L1 Surrogate Q % Rec Acceptance Limit 1,2-Dichloroethane-d4 101 70-130 Bromofluorobenzene 94 70-130 Toluene-d8 94 70-130 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40% + = RPD is out of criteria _DL = Detection Limit * = RSD is out of criteria 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 11 of 23 Volatile Organic Compounds by GC/MS - LCS Batch:Prep Method: Sample ID:WQ21461-002 21461 SM 6200B-2011 Analytical Method:SM 6200B-2011 Matrix:Aqueous Parameter Result Q % Rec Spike Amount Analysis Date %Rec LimitDil(ug/L)(ug/L) Benzene 55 11/05/2021 09101095070-1301 Chlorobenzene 51 11/05/2021 09101035070-1301 1,2-Dibromoethane (EDB)51 11/05/2021 09101025070-1301 1,2-Dichlorobenzene 53 11/05/2021 09101055070-1301 1,3-Dichlorobenzene 52 11/05/2021 09101055070-1301 1,4-Dichlorobenzene 50 11/05/2021 09101005070-1301 Diisopropyl ether (IPE)50 11/05/2021 09101005070-1301 Ethylbenzene 54 11/05/2021 09101095070-1301 Methyl tertiary butyl ether (MTBE)44 11/05/2021 0910885070-1301 Toluene 58 11/05/2021 09101165070-1301 m+p - Xylenes 57 11/05/2021 09101155070-1301 o - Xylenes 51 11/05/2021 09101025070-1301 Surrogate Q % Rec Acceptance Limit 1,2-Dichloroethane-d4 109 70-130 Bromofluorobenzene 104 70-130 Toluene-d8 111 70-130 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40% + = RPD is out of criteria _DL = Detection Limit * = RSD is out of criteria 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 12 of 23 Volatile Organic Compounds by GC/MS - MS Batch:Prep Method: Sample ID:WJ30034-002MS 21461 SM 6200B-2011 Analytical Method:SM 6200B-2011 Matrix:Aqueous Parameter Result Q % Rec Spike Amount Analysis Date %Rec Limit Sample Amount Dil(ug/L)(ug/L)(ug/L) Benzene 290 11/05/2021 192611025070-130205 Chlorobenzene 260 11/05/2021 192610325070-130ND5 1,2-Dibromoethane (EDB)260 11/05/2021 192610525070-130ND5 1,2-Dichlorobenzene 260 11/05/2021 192610525070-130ND5 1,3-Dichlorobenzene 260 11/05/2021 192610625070-130ND5 1,4-Dichlorobenzene 250 11/05/2021 192610025070-130ND5 Diisopropyl ether (IPE)300 11/05/2021 192611825070-130ND5 Ethylbenzene 2500 11/05/2021 1926N17925070-13020005 Methyl tertiary butyl ether (MTBE)290 11/05/2021 192611425070-130ND5 Toluene 4700 11/05/2021 1926N-62250 70-13048005 m+p - Xylenes 6900 11/05/2021 1926N21025070-13063005 o - Xylenes 3600 11/05/2021 1926N20125070-13031005 Surrogate Q % Rec Acceptance Limit 1,2-Dichloroethane-d4 107 70-130 Bromofluorobenzene 105 70-130 Toluene-d8 101 70-130 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40% + = RPD is out of criteria _DL = Detection Limit * = RSD is out of criteria 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 13 of 23 Volatile Organic Compounds by GC/MS - MSD Batch:Prep Method: Sample ID:WJ30034-002MD 21461 SM 6200B-2011 Analytical Method:SM 6200B-2011 Matrix:Aqueous Parameter Result Q % Rec Spike Amount Analysis Date% RPD %Rec Limit % RPD Limit Sample Amount Dil(ug/L)(ug/L)(ug/L) Benzene 250 11/05/2021 19519225070-13016 20205 Chlorobenzene 250 11/05/2021 19519925070-1304.3 20ND5 1,2-Dibromoethane (EDB)250 11/05/2021 195110025070-1305.0 20ND5 1,2-Dichlorobenzene 260 11/05/2021 195110325070-1302.7 20ND5 1,3-Dichlorobenzene 260 11/05/2021 195110425070-1301.3 20ND5 1,4-Dichlorobenzene 250 11/05/2021 19519925070-1300.88 20ND5 Diisopropyl ether (IPE)250 11/05/2021 195110025070-13017 20ND5 Ethylbenzene 2200 11/05/2021 1951E8425070-13010 2020005 Methyl tertiary butyl ether (MTBE)230 11/05/2021 1951+91250 70-13022 20ND5 Toluene 4300 11/05/2021 1951N-203250 70-1307.8 2048005 m+p - Xylenes 6400 11/05/2021 1951N2.2250 70-1307.9 2063005 o - Xylenes 3200 11/05/2021 1951N5025070-13011 2031005 Surrogate Q % Rec Acceptance Limit 1,2-Dichloroethane-d4 81 70-130 Bromofluorobenzene 95 70-130 Toluene-d8 94 70-130 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40% + = RPD is out of criteria _DL = Detection Limit * = RSD is out of criteria 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 14 of 23 Volatile Organic Compounds by GC/MS - MB Batch:Prep Method: Sample ID:WQ22161-001 22161 SM 6200B-2011 Analytical Method:SM 6200B-2011 Matrix:Aqueous Parameter Result Q LOQ DL Units Analysis DateDil tert-Amyl alcohol (TAA)ND 11/11/2021 1001208.0 ug/L1 tert-Amyl methyl ether (TAME)ND 11/11/2021 1001100.40 ug/L1 tert-Butyl formate (TBF)ND 11/11/2021 10015.0 4.0 ug/L1 Ethanol ND 11/11/2021 100110040ug/L1 Ethyl-tert-butyl ether (ETBE)ND 11/11/2021 10011.0 0.40 ug/L1 tert-butyl alcohol (TBA)ND 11/11/2021 1001208.0 ug/L1 Surrogate Q % Rec Acceptance Limit 1,2-Dichloroethane-d4 94 70-130 Bromofluorobenzene 97 70-130 Toluene-d8 97 70-130 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40% + = RPD is out of criteria _DL = Detection Limit * = RSD is out of criteria 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 15 of 23 Volatile Organic Compounds by GC/MS - LCS Batch:Prep Method: Sample ID:WQ22161-002 22161 SM 6200B-2011 Analytical Method:SM 6200B-2011 Matrix:Aqueous Parameter Result Q % Rec Spike Amount Analysis Date %Rec LimitDil(ug/L)(ug/L) tert-Amyl alcohol (TAA)900 11/11/2021 090590100070-1301 tert-Amyl methyl ether (TAME)47 11/11/2021 0905945070-1301 tert-Butyl formate (TBF)230 11/11/2021 09059425070-1301 Ethanol 4300 11/11/2021 090586500040-1401 Ethyl-tert-butyl ether (ETBE)47 11/11/2021 0905955070-1301 tert-butyl alcohol (TBA)880 11/11/2021 090588100070-1301 Surrogate Q % Rec Acceptance Limit 1,2-Dichloroethane-d4 97 70-130 Bromofluorobenzene 92 70-130 Toluene-d8 93 70-130 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40% + = RPD is out of criteria _DL = Detection Limit * = RSD is out of criteria 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 16 of 23 Volatile Organic Compounds by GC/MS - MB Batch:Prep Method: Sample ID:WQ22332-001 22332 SM 6200B-2011 Analytical Method:SM 6200B-2011 Matrix:Aqueous Parameter Result Q LOQ DL Units Analysis DateDil Benzene ND 11/12/2021 10550.50 0.40 ug/L1 Chlorobenzene ND 11/12/2021 10550.50 0.40 ug/L1 1,2-Dibromoethane (EDB)ND 11/12/2021 10550.50 0.40 ug/L1 1,2-Dichlorobenzene ND 11/12/2021 10550.50 0.40 ug/L1 1,3-Dichlorobenzene ND 11/12/2021 10550.50 0.40 ug/L1 1,4-Dichlorobenzene ND 11/12/2021 10550.50 0.40 ug/L1 Diisopropyl ether (IPE)ND 11/12/2021 10550.50 0.40 ug/L1 Ethylbenzene ND 11/12/2021 10550.50 0.40 ug/L1 Methyl tertiary butyl ether (MTBE)ND 11/12/2021 10550.50 0.40 ug/L1 Toluene ND 11/12/2021 10550.50 0.40 ug/L1 m+p - Xylenes ND 11/12/2021 10550.50 0.40 ug/L1 o - Xylenes ND 11/12/2021 10550.50 0.40 ug/L1 Surrogate Q % Rec Acceptance Limit 1,2-Dichloroethane-d4 105 70-130 Bromofluorobenzene 98 70-130 Toluene-d8 99 70-130 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40% + = RPD is out of criteria _DL = Detection Limit * = RSD is out of criteria 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 17 of 23 Volatile Organic Compounds by GC/MS - LCS Batch:Prep Method: Sample ID:WQ22332-002 22332 SM 6200B-2011 Analytical Method:SM 6200B-2011 Matrix:Aqueous Parameter Result Q % Rec Spike Amount Analysis Date %Rec LimitDil(ug/L)(ug/L) Benzene 48 11/12/2021 0953955070-1301 Chlorobenzene 46 11/12/2021 0953915070-1301 1,2-Dibromoethane (EDB)48 11/12/2021 0953955070-1301 1,2-Dichlorobenzene 45 11/12/2021 0953915070-1301 1,3-Dichlorobenzene 46 11/12/2021 0953915070-1301 1,4-Dichlorobenzene 44 11/12/2021 0953885070-1301 Diisopropyl ether (IPE)48 11/12/2021 0953975070-1301 Ethylbenzene 47 11/12/2021 0953945070-1301 Methyl tertiary butyl ether (MTBE)50 11/12/2021 0953995070-1301 Toluene 49 11/12/2021 0953975070-1301 m+p - Xylenes 48 11/12/2021 0953955070-1301 o - Xylenes 48 11/12/2021 0953965070-1301 Surrogate Q % Rec Acceptance Limit 1,2-Dichloroethane-d4 95 70-130 Bromofluorobenzene 92 70-130 Toluene-d8 88 70-130 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40% + = RPD is out of criteria _DL = Detection Limit * = RSD is out of criteria 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 18 of 23 Volatile Organic Compounds by GC/MS - MS Batch:Prep Method: Sample ID:WJ30034-002MS 22332 SM 6200B-2011 Analytical Method:SM 6200B-2011 Matrix:Aqueous Parameter Result Q % Rec Spike Amount Analysis Date %Rec Limit Sample Amount Dil(ug/L)(ug/L)(ug/L) Benzene 5500 11/12/2021 1821110500070-130ND100 Chlorobenzene 5100 11/12/2021 1821103500070-130ND100 1,2-Dibromoethane (EDB)5100 11/12/2021 1821101500070-130ND100 1,2-Dichlorobenzene 3600 11/12/2021 182172500070-130ND100 1,3-Dichlorobenzene 4200 11/12/2021 182185500070-130ND100 1,4-Dichlorobenzene 3900 11/12/2021 182179500070-130ND100 Diisopropyl ether (IPE)5300 11/12/2021 1821106500070-130ND100 Ethylbenzene 7700 11/12/2021 1821108500070-1302200100 Methyl tertiary butyl ether (MTBE)5100 11/12/2021 1821103500070-130ND100 Toluene 12000 11/12/2021 1821107500070-1306300100 m+p - Xylenes 13000 11/12/2021 1821105500070-1307900100 o - Xylenes 9300 11/12/2021 1821106500070-1304000100 Surrogate Q % Rec Acceptance Limit 1,2-Dichloroethane-d4 103 70-130 Bromofluorobenzene 108 70-130 Toluene-d8 106 70-130 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40% + = RPD is out of criteria _DL = Detection Limit * = RSD is out of criteria 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 19 of 23 Volatile Organic Compounds by GC/MS - MSD Batch:Prep Method: Sample ID:WJ30034-002MD 22332 SM 6200B-2011 Analytical Method:SM 6200B-2011 Matrix:Aqueous Parameter Result Q % Rec Spike Amount Analysis Date% RPD %Rec Limit % RPD Limit Sample Amount Dil(ug/L)(ug/L)(ug/L) Benzene 5600 11/12/2021 1847112500070-1302.3 20ND100 Chlorobenzene 5200 11/12/2021 1847105500070-1302.3 20ND100 1,2-Dibromoethane (EDB)5200 11/12/2021 1847103500070-1302.2 20ND100 1,2-Dichlorobenzene 4700 11/12/2021 1847+955000 70-13027 20ND100 1,3-Dichlorobenzene 5100 11/12/2021 1847102500070-13018 20ND100 1,4-Dichlorobenzene 4800 11/12/2021 184796500070-13020 20ND100 Diisopropyl ether (IPE)5500 11/12/2021 1847111500070-1303.9 20ND100 Ethylbenzene 7600 11/12/2021 1847107500070-1300.98 202200100 Methyl tertiary butyl ether (MTBE)5400 11/12/2021 1847109500070-1305.6 20ND100 Toluene 11000 11/12/2021 1847100500070-1303.1 206300100 m+p - Xylenes 13000 11/12/2021 184793500070-1304.8 207900100 o - Xylenes 9300 11/12/2021 1847106500070-1300.067 204000100 Surrogate Q % Rec Acceptance Limit 1,2-Dichloroethane-d4 99 70-130 Bromofluorobenzene 100 70-130 Toluene-d8 101 70-130 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40% + = RPD is out of criteria _DL = Detection Limit * = RSD is out of criteria 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 20 of 23 Chain of Custody and Miscellaneous Documents 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 21 of 23 PACE ANALYTICAL SERVICES, LLC 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 22 of 23