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Home My WebLink AboutMO-5289_18272_CA_MRP_20241004Arcadis U.S., Inc. -D Sanders Lane 919 854 1282 919 854 5448 www.arcadis.com Mr. Daniel Bowser NCDEQ – UST Section Mooresville Regional Office 610 East Center Avenue, Suite 301 Mooresville, North Carolina 28115 Subject: Annual Groundwater Monitoring Report – 2024 Former BP Facility #972 101 Seneca Place Charlotte, North Carolina 28209 Incident Number: 18272 Risk Classification: Intermediate Dear Mr. Bowser: On behalf of Atlantic Richfield Company (ARCO), a BP Products North America, Inc. (BP) affiliated company, Arcadis G&M of North Carolina is submitting the attached Groundwater Monitoring Report – 2024 dated September 19, 2024, for the above referenced site. Please contact me at (919) 328-5605 with any questions or concerns related to the Report or this incident number. Sincerely, Arcadis G&M of North Carolina, Inc. Hardik Patel AFS Project Manager Copies: File – BP #972 Date: September 19, 2024 Contact: .328.5605 .Patel@arcadis.com / 143476 Atlantic Richfield Company c/o BP Products North America, Inc. Annual Groundwater Monitoring Report - 2024 Former BP Facility #972 101 Seneca Place Charlotte, Mecklenburg County, North Carolina NCDEQ Incident #18272 September 2024 Annual Groundwater Monitoring Report - 2024 arcadis.com i ANNUAL GROUNDWATER MONITORING REPORT -2024 Prepared for: Atlantic Richfield Company c/o BP Products North America, Inc. Mr. Jim Smith 201 Helios Way Helios Plaza-6th Floor Houston, TX 77079 832-619-3585 Jim.Smith2@bp.com Prepared by: Arcadis G&M of North Carolina, Inc. 5420 Wade Park Blvd. Suite 350 Raleigh, North Carolina 27607 Tel 919.854.1282 Fax 919.854.5448 www.arcadis-us.com Environmental Our Ref.: 30143476 Date: September 19, 2024 This document is intended only for the use of the individual or entity for which it was prepared and may contain information that is privileged, confidential and exempt from disclosure under applicable law. Any dissemination, distribution or copying of this document is strictly prohibited. Hardik Patel AFS Project Manager C. Scott Bostian, P.E. North Carolina P.E. No. 25659 Senior Engineer Annual Groundwater Monitoring Report - 2024 arcadis.com iii CONTENTS 1.0 Site History and Characterization .......................................................................................................... 6 2.0 Free Product ........................................................................................................................................... 7 3.0 Groundwater Monitoring .......................................................................................................................... 8 3.1 Groundwater Gauging ....................................................................................................................... 8 3.2 Groundwater Sampling ..................................................................................................................... 8 3.3 Groundwater Analytical Results ........................................................................................................ 9 4.0 Site Remediation ................................................................................................................................... 10 4.1 Remediation Activities to Date ........................................................................................................ 10 5.0 Conclusions and Recommendations ..................................................................................................... 11 TABLES Table 1. Monitoring Well Construction Details Table 2. Groundwater Elevation Data FIGURES Figure 1. Site Location Map Figure 2. Site Map Figure 3. Potentiometric Surface Map - August 9, 2024 Figure 4. Groundwater Analytical Map - September 2020 - August 2024 Figure 5. Benzene Isoconcentration Map - August 9, 2024 APPENDICES A-Historical Groundwater Elevation Data B-Laboratory Analytical Report and Chain-of-Custody Record – August 20, 2024 C-Historical Groundwater Analytical Data Annual Groundwater Monitoring Report - 2024 arcadis.com 4 EXECUTIVE SUMMARY On behalf of Atlantic Richfield Company (ARCO), a BP Products North America, Inc. (BP) affiliated company, Arcadis G&M of North Carolina, Inc. (Arcadis) personnel performed the annual groundwater sampling of monitoring wells associated with Former BP Facility #972 located at 101 Seneca Place, in Charlotte, Mecklenburg County, North Carolina (the Site) on August 9, 2024. On August 9, 2024, Arcadis personnel gauged three (3) groundwater monitoring wells (MW-3RR, MW-7, and MW-10) to determine DTW and DTP, if present. Monitoring wells MW-1, MW-1A, MW-2R, MW-4, MW-6, MW-9, and MW-11 were discovered to have been abandoned when Arcadis visited the site. MW-5, MW-8, and MW-12 were not gauged since they could not be located, and MW-11 was not gauged due to no access. DTW ranged from 12.25 below top of casing (btoc) in groundwater monitoring well MW-10 to 15.05 btoc in groundwater monitoring well MW-3RR during the August 9, 2024, groundwater gauging event. Free product was not detected at the Site on August 9, 2024. On August 9, 2024, a groundwater sample was collected from groundwater monitoring well MW-3RR. The maximum concentrations of selected dissolved-phase COCs found during the August 9, 2024, sampling event are summarized in the table below: Maximum Groundwater Concentrations (August 9, 2024) Chemical of Concern (COC) ID (µg/L) GCL Standards (µg/L) Benzene MW-3RR 7,210 5,000 Toluene MW-3RR 40,000 260,000 Ethylbenzene MW-3RR 2,710 84,500 Xylenes (Total) MW-3RR 13,800 85,500 MTBE (1) MW-3RR 2,250 20,000 Note: Concentrations in Bold exceed the applicable North Carolina GCL Standard 1.Methyl Tert-Butyl Ether Dissolved-phase benzene in groundwater monitoring well MW-3RR was the only COC detected on August 9, 2024, in concentrations exceeding the applicable North Carolina GCL Standard. Overall, dissolved-phase COCs have remained stable in comparison to historical dissolved-phase COC concentrations. The next annual groundwater monitoring and sampling event is scheduled for October 2025. All existing groundwater monitoring wells associated with the Site will be gauged to Annual Groundwater Monitoring Report - 2024 arcadis.com 5 check for free product and to determine the potentiometric surface at the Site. Groundwater samples will be collected from groundwater monitoring well MW-3RR for analysis of benzene, toluene, ethylbenzene, and total xylenes (BTEX), and MTBE by Standard Method 6200B. An Annual Groundwater Monitoring Report documenting the proposed activities will be submitted to the NCDEQ for review and approval within 45- days of receipt of the laboratory analytical report. Annual Groundwater Monitoring Report - 2024 arcadis.com 6 1.0 SITE HISTORY AND CHARACTERIZATION Former BP Facility #972, located at 101 Seneca Place, Charlotte, Mecklenburg County, North Carolina (the Site), has operated as a gasoline filling station since at least 1957. The Site is located on 0.52 acres at the northeastern corner of the intersection of Seneca Place and South Boulevard. A Site Location Map is presented as Figure 1. Historically, from 1957 to 1997 the Site operated as a gasoline service station. Based on information obtained from the Comprehensive Site Assessment (CSA) conducted by Resolve Environmental Services, P.A. (Resolve), dated June 23, 1998, prior operators of the former station included the Sinclair Refining Company (predecessor to ARCO), the BP Corporation and Amoco (both currently BP Products North America, Inc.), Caper House, and Spivey Enterprises. UST system information prior to 1971 is unknown. In 1971, four (4) 2,000-gallon USTs and one (1)6,000-gallon UST were installed. Based on an Environmental Data Resources, Inc. (EDR) report prepared for URS in March 2003, all five (5) of the 1971 USTs were permanently closed in 1987. Three (3) replacement 8,000-gallon USTs were installed in December 1987. Based on information obtained by the former property owner, a release of petroleum product was detected in October 1995 during an Environmental Site Assessment. The exact volume of the petroleum product release was unknown. The three (3) 8,000-gallon USTs were excavated and removed from the Site in October 1997 and the gasoline station was demolished. A UST closure report was submitted to the NCDEQ in December 1997. The property was redeveloped in 2007, and is currently a Panda Express restaurant, owned by Azalea Management. A Site Map is included as Figure 2. The Site is located in the Piedmont physiographic province, which is characterized by moderately level inter stream areas separated by broad valleys. Bedrock in Charlotte, North Carolina is mapped within the Charlotte Belt lithologic division of the Piedmont. According to the Geologic Map of North Carolina, bedrock in the area of the Site consists of intrusive rocks, including granite and gabbro. The Charlotte area, which includes the Site, is drained by streams associated with the Catawba River basin. Surface water drainage at the Site generally flows in a northeasterly direction toward an unnamed tributary of Little Hope Creek. Little Hope Creek flows east and discharges into Little Sugar Creek (Resolve, 1988). In 1988, Resolve conducted a receptor survey of an area within 1,500 feet of the UST basin to locate potential receptors. Based on the survey, apparent water supply wells were not observed in the area. A review of Charlotte-Mecklenburg Utility Department records indicates that the private residences and commercial or industrial operations in the vicinity of the Site are connected to municipal water service. Surface water runoff from the Site and adjoining shopping center enters catch basins situated in the asphalt covered parking areas of the shopping center and discharges to a swale located at the northeast corner of the shopping center property. The swale extends to an unnamed tributary of Little Hope Creek located approximately 2,000 feet northeast of the former UST basin. No surface water bodies have been identified within 500-feet of the Site. The Site is currently classified as Intermediate risk in accordance with 15A North Carolina Administrative Code (NCAC) 2L .0115 due to concentrations of constituents of concern (COCs) in Annual Groundwater Monitoring Report - 2024 arcadis.com 7 groundwater above applicable North Carolina Department of Environmental Quality (NCDEQ) Gross Contaminant Level (GCL) Standards. 2.0 Free Product Gauging activities performed at the Site on August 9, 2024, did not indicate the presence of free product. Prior to the August 9, 2024, groundwater gauging event, free product has historically been observed in groundwater monitoring wells MW-2, MW-4, and MW-6 at a maximum apparent thickness of 1.90 feet in MW-2 on December 19, 2000, 1.26 feet in MW-4 on November 20, 2000, and 0.38 feet in MW-6 on November 20, 2000. The last detection of free product at the Site was in a groundwater monitoring well MW-6 on December 12, 2002, at a maximum apparent thickness of 0.36 feet. Historical free product gauging information is presented in Appendix A. Annual Groundwater Monitoring Report - 2024 arcadis.com 8 3.0 GROUNDWATER MONITORING 3.1 Groundwater Gauging On August 9, 2024, Arcadis G&M of North Carolina, Inc. (Arcadis) personnel gauged monitoring wells MW-3RR, MW-7, and MW-10 to determine DTW and DTP, if present. Monitoring wells MW-1, MW-1A, MW-2R, MW-4, MW-6, MW-9, and MW-11 were abandoned. MW-5, MW-8, and MW-12 were not gauged since they could not be located. Gauging was conducted with an oil/water interface probe (IP) prior to purging and sampling to determine DTB, DTW, and DTP, if present. The IP and attached tape, marked in 0.01-foot increments, were properly decontaminated before each use with Alconox soap and rinsed with distilled water. The DTW was measured from the marked survey point on the top of well casing (TOC). All measurements were recorded to the nearest 0.01-foot increment. Free product was not detected during the August 9, 2024, groundwater monitoring event. DTW ranged from 12.25 below top of casing (btoc) in groundwater monitoring well MW-10 to 15.05 btoc in groundwater monitoring well MW-3RR during the August 9, 2024 sampling event. The observed groundwater flow direction on August 9, 2024, was towards the east, which is consistent with historical observed groundwater flow direction. Current and historical groundwater elevations are summarized in Appendix A. Groundwater monitoring well construction information and current groundwater elevation data is presented in Tables 1 and 2, respectively. A potentiometric surface map using groundwater elevation from the August 9, 2024, gauging event is provided as Figure 3. 3.2 Groundwater Sampling On August 9, 2024, groundwater monitoring well MW-3RR were purged of stagnant water to prepare for groundwater sampling. Prior to purging, the amount of water to be removed was calculated using the following formula: 3.1415 x r2 x (TD-DTW) x 7.481 = gallons of water (1 well volume) Where: r = radius of well (in feet) TD = total depth of well (in feet) DTW = depth to water (in feet) To ensure that the water in the wells was representative of the water in the aquifer, a minimum of three well volumes were removed. Groundwater samples obtained from the groundwater monitoring well were collected from disposable polyethylene bailers using new nylon rope. Groundwater samples were placed in laboratory supplied containers and shipped on wet ice to TestAmerica Inc. in Pensacola, Florida, for analysis of benzene, toluene, ethylbenzene, xylenes (total) (BTEX), methyl tert-butyl ether (MTBE) by SM 6200B method. Groundwater samples submitted for BTEX and MTBE analysis were collected in 3 glass VOA vials with HCL preservative. Annual Groundwater Monitoring Report - 2024 arcadis.com 9 The laboratory analytical report and chain-of-custody record for the August 9, 2024, groundwater sampling event is included as Appendix B. 3.3 Groundwater Analytical Results Groundwater analytical data from the August 9, 2024, groundwater sampling event indicated the following: •Dissolved-phase concentrations of benzene were detected in concentrations exceeding the applicable North Carolina GCL standard of 5,000 µg/L in groundwater monitoring wells MW-3RR (7,210 µg/L). The maximum concentrations of selected dissolved-phase COCs found during the August 9, 2024, sampling events are summarized in the table below: Maximum Groundwater Concentrations (August 9, 2024) Chemical of Concern (COC) ID (µg/L) GCL Standards (µg/L) Benzene MW-3RR 7,210 5,000 Toluene MW-3RR 40,000 260,000 Ethylbenzene MW-3RR 2,710 84,500 Xylenes (Total) MW-3RR 13,800 85,500 MTBE (1) MW-3RR 2,250 20,000 Note: Concentrations in Bold exceed the applicable North Carolina GCL Standard 1.Methyl Tert-Butyl Ether Current and historical groundwater analytical results are presented in Appendix C. A dissolved phase concentration map is presented as Figure 4. A benzene iso-concentration map depicting the dissolved-phase extent of benzene exceeding the applicable GCL standard is presented in Figure 5. Annual Groundwater Monitoring Report - 2024 arcadis.com 10 4.0 SITE REMEDIATION 4.1 Remediation Activities to Date Date Activity 1995 Release of petroleum product found in Environmental Site Assessment 1995-2003 Installation of twelve (12) monitoring wells, UST closure, soil borings, groundwater, and soil sampling May 2003 Supplemental Soil Investigation – Soil samples collected throughout the site to delineate contamination December 2003 Two (2) monitoring wells installed 2003-2011 Annual groundwater sampling 2011 Two (2) monitoring wells installed 2011-present Monitoring of natural attenuation with annual groundwater sampling Annual Groundwater Monitoring Report - 2024 arcadis.com 11 5.0 CONCLUSIONS AND RECOMMENDATIONS Free product was not observed at the Site during the August 9, 2024, sampling event. Groundwater sampling activities conducted on August 9, 2024, indicated dissolved-phase benzene at groundwater monitoring well MW-3RR. Benzene in monitoring well MW-3RR was the only COC detected in concentrations exceeding the applicable North Carolina GCL Standard. Overall, dissolved-phase COCs have remained stable in comparison to historical dissolved-phase COC concentrations. The next annual groundwater monitoring and sampling event is scheduled for October 2025. All existing groundwater monitoring wells associated with the Site will be gauged to check for free product and to determine the potentiometric surface at the Site. Groundwater samples will be collected from groundwater monitoring wells MW-3RR for analysis of benzene, toluene, ethylbenzene, and total xylenes (BTEX), and MTBE by Standard Method 6200B. An Annual Groundwater Monitoring Report documenting the proposed activities will be submitted to the NCDEQ for review and approval within 45- days of receipt of the laboratory analytical report. TABLES Well ID Date Installed (feet btoc) Well Diameter (inches) Screened (feet btoc) TOC Elevation (feet) MW-1 2/5/1998 24 1 9 - 24 732.96 MW-1A 10/12/1997 55 2 50 - 55 732.71 MW-2R 8/9/2011 25 2 15 - 25 733.02 MW-3RR 8/9/2011 25 2 15 - 25 728.32 MW-4 2/6/1998 25 2 10 - 25 731.89 MW-5 2/6/1998 25 2 10 - 25 731.10 MW-6 5/18/1998 25 2 10 - 25 730.30 MW-7 5/18/1998 25 2 10 - 25 729.69 MW-8 5/18/1998 20 2 5 - 20 723.79 MW-9 6/8/1998 25 2 10 - 25 727.58 MW-10 6/8/1998 20 2 10 - 20 722.70 MW-11 6/8/1998 25 2 10 - 25 725.67 MW-12 9/23/2003 25 2 10 - 25 731.35 Notes: btoc = below top of casing Well MW-3 was properly abandoned on 09/23/03. Well MW-3R was properly abandoned on 05/21/07. Well MW-2 was properly abandoned on 08/9/11. Charlotte, Mecklenburg County, North Carolina NC DEQ Incident No. 18272 Table 1 Monitoring Well Construction Details Quick Shoppe # 5 101 Seneca Place Page 1 of 1 Well ID Date TOC Elevation Groundwater Thickness MW-1 08/09/24 732.96 MW-1A 08/09/24 732.71 MW-2R 08/09/24 733.02 MW-3RR 08/09/24 728.32 ND 15.05 ND 713.27 MW-4 08/09/24 731.89 MW-5 08/09/24 731.10 MW-6 08/09/24 730.30 MW-7 08/09/24 729.69 ND 14.40 ND 715.29 MW-8 08/09/24 723.79 MW-9 08/09/24 727.58 MW-10 08/09/24 722.70 ND 12.25 ND 710.45 MW-11 08/09/24 725.67 NG NG NG NG MW-12 08/09/24 731.35 Notes: ND = not detected Abandoned Well Abandoned Well Abandoned Well btoc = below top of casing TOC = top of casing Unable to Locate Abandoned Well LNAPL = light non-aqueous phase liquid TOC Elevations surveyed relative to mean sea level on 08/26/09 and on 08/09/11 for MW-2R and MW- 3RR, respectively. Unable to Locate Abandoned Well Abandoned Well Unable to Locate Page 1 of 1 FIGURES NORTH CAROLINA AREA LOCATION Approximate Scale: 1 in. = 2,000 ft. 0 2,000'4,000' SITE LOCATION SITE LOCATION MAP 1 IM A G E S : N C _ C h a r l o t t e _ E a s t _ 2 0 2 2 0 8 3 0 _ T M . j p g N C _ C h a r l o t t e _ W e s t _ 2 0 2 2 0 8 3 0 _ T M . j p g A r c a d i s L o g o . p n g XR E F S : PR O J E C T N A M E : -- - - CIT Y : S Y R A C U S E N Y D I V / G R O U P : E N V C A D D B : E . K R A H M E R P I C : P M : T M : T R : A . S I M P S O N L Y R : ( O p t ) O N = * ; O F F = * R E F * C:\ U s e r s \ n a i k u v 3 1 5 9 \ D C \ A C C D o c s \ A r c a d i s A C C U S \ A U S - 9 9 9 9 9 9 9 9 - B P _ 9 7 2 _ C H A R L O T T E _ N C \ P r o j e c t F i l e s \ 1 0 _ W I P \ 1 0 T _ A R C _ E N V \ 2 0 2 4 \ 0 1 - D W G \ G E N - F 0 1 - S I T E L O C A T I O N M A P . d w g L A Y O U T : 1 S A V E D : 9/3 / 2 0 2 4 1 1 : 1 9 A M A C A D V E R : 24 . 3 S ( L M S T E C H ) P A G E S E T U P : --- - P L O T S T Y L E T A B L E : PL T F U L L . C T B P L O T T E D : 9/3 / 2 0 2 4 1 1 : 2 0 A M B Y : NA I K U , V I N A Y REFERENCE: BASE MAP USGS 7.5. MIN. TOPO. QUAD., CHARLOTTE WEST & CHARLOTTE EAST, NC, 2022. FIGURE ATLANTIC RICHFIELD COMPANY C/O BP PRODUCTS NORTH AMERICA, INC. FORMER BP STATION 972 101 SENECA PLACE, CHARLOTTE, NORTH CAROLINA ANNUAL GROUNDWATER MONITORING REPORT-2024 SO U T H B O U L E V A R D SENECA PLACE MW-5 MW-2R MW-1A MW-4 MW-3RR MW-7 MW-11 MW-8 MW-10 MW-9 MW-6 MW-12 MW-3R MW-3 MW-2 MW-1 LEGEND APPROXIMATE PROPERTY LINE ADJACENT PROPERTIES ACTIVE MONITORING WELL ABANDONED MONITORING WELL 0 GRAPHIC SCALE 80'120' SITE MAP ATLANTIC RICHFIELD COMPANY C/O BP PRODUCTS NORTH AMERICA, INC. FORMER BP STATION 972 101 SENECA PLACE, CHARLOTTE, NORTH CAROLINA ANNUAL GROUNDWATER MONITORING REPORT-2024 2 N CIT Y : ( R e q d ) D I V / G R O U P : ( R e q d ) D B : ( R e q d ) L D : ( O p t ) P I C : ( O p t ) P M : ( R e q d ) T M : ( O p t ) L Y R : ( O p t ) O N = * ; O F F = * R E F * C:\ U s e r s \ n a i k u v 3 1 5 9 \ D C \ A C C D o c s \ A r c a d i s A C C U S \ A U S - 9 9 9 9 9 9 9 9 - B P _ 9 7 2 _ C H A R L O T T E _ N C \ P r o j e c t F i l e s \ 1 0 _ W I P \ 1 0 T _ A R C _ E N V \ 2 0 2 4 \ 0 1 - D W G \ G E N - F 0 2 - S I T E M A P . d w g L A Y O U T : 2 S A V E D : 9/2 / 2 0 2 4 4 : 2 9 P M A C A D V E R : 24 . 3 S ( L M S T E C H ) P A G E S E T U P : -- - - P L O T S T Y L E T A B L E : PL T F U L L . C T B PL O T T E D : 9/2 / 2 0 2 4 7 : 1 3 P M B Y : NA I K U , V I N A Y FIGURE SO U T H B O U L E V A R D SENECA PLACE MW-5 (NL) MW-2R MW-1A MW-1 MW-4 MW-7 (715.29) MW-11 (NG) MW-12 (NL) MW-3RR (713.27) MW-6 MW-9 MW-10(710.45) MW-8 (NL) MW-2 MW-3R MW-3 71 1 . 0 0 71 1 . 0 0 71 2 . 0 0 71 2 . 0 0 71 3 . 0 0 71 3 . 0 0 71 4 . 0 0 71 4 . 0 0 71 5 . 0 0 71 5 . 0 0 LEGEND APPROXIMATE PROPERTY LINE ADJACENT PROPERTIES ACTIVE MONITORING WELL ABANDONED MONITORING WELL GROUNDWATER ELEVATION (FEET ABOVE MSL) GROUNDWATER CONTOUR (DASHED WHERE INFERRED) DIRECTION OF GROUNDWATER FLOW NOT LOCATED NOT GAUGED (715.29) 715.00 0 GRAPHIC SCALE 80'120' POTENTIOMETRIC SURFACE MAP AUGUST 09, 2024 3 N (NL) CIT Y : ( R e q d ) D I V / G R O U P : ( R e q d ) D B : ( R e q d ) L D : ( O p t ) P I C : ( O p t ) P M : ( R e q d ) T M : ( O p t ) L Y R : ( O p t ) O N = * ; O F F = * R E F * C:\ U s e r s \ n a i k u v 3 1 5 9 \ D C \ A C C D o c s \ A r c a d i s A C C U S \ A U S - 9 9 9 9 9 9 9 9 - B P _ 9 7 2 _ C H A R L O T T E _ N C \ P r o j e c t F i l e s \ 1 0 _ W I P \ 1 0 T _ A R C _ E N V \ 2 0 2 4 \ 0 1 - D W G \ G W M - 2 0 2 4 - F 0 3 - P O T E N T I O M E T R I C S U R F A C E M A P . d w g L A Y O U T : 3 S A V E D : 9/3 / 2 0 2 4 1 1 : 5 4 A M A C A D V E R : 24 . 3 S ( L M S T E C H ) P A G E S E T U P : --- - PL O T S T Y L E T A B L E : PL T F U L L . C T B P L O T T E D : 9/ 3 / 2 0 2 4 1 1 : 5 5 A M B Y : NA I K U , V I N A Y ATLANTIC RICHFIELD COMPANY C/O BP PRODUCTS NORTH AMERICA, INC. FORMER BP STATION 972 101 SENECA PLACE, CHARLOTTE, NORTH CAROLINA ANNUAL GROUNDWATER MONITORING REPORT-2024 FIGURE (NG) SO U T H B O U L E V A R D SENECA PLACE MW-2R MW-1A MW-1 MW-4 MW-6 MW-9 MW-2 MW-3R MW-3 MW-5 (NL) MW-11 (NG) MW-12 (NL) MW-3RR MW-10 MW-8 (NL) MW-7 LEGEND APPROXIMATE PROPERTY LINE ADJACENT PROPERTIES ACTIVE MONITORING WELL ABANDONED MONITORING WELL 0 GRAPHIC SCALE 80'120' 4CIT Y : ( R e q d ) D I V / G R O U P : ( R e q d ) D B : ( R e q d ) L D : ( O p t ) P I C : ( O p t ) P M : ( R e q d ) T M : ( O p t ) L Y R : ( O p t ) O N = * ; O F F = * R E F * C:\ U s e r s \ n a i k u v 3 1 5 9 \ D C \ A C C D o c s \ A r c a d i s A C C U S \ A U S - 9 9 9 9 9 9 9 9 - B P _ 9 7 2 _ C H A R L O T T E _ N C \ P r o j e c t F i l e s \ 1 0 _ W I P \ 1 0 T _ A R C _ E N V \ 2 0 2 4 \ 0 1 - D W G \ G W M - 2 0 2 4 - F 0 4 - G W A . d w g L A Y O U T : 4 S A V E D : 9/ 3 / 2 0 2 4 1 1 : 4 1 A M A C A D V E R : 24 . 3 S ( L M S T E C H ) P A G E S E T U P : -- - - P L O T S T Y L E T A B L E : PL T F U L L . C T B PL O T T E D : 9/3 / 2 0 2 4 1 1 : 4 1 A M B Y : NA I K U , V I N A Y NOT LOCATED NOT DETECTED AT SPECIFIED DETECTION EXCEEDS NC GCL (NL) < ALL CONCENTRATIONS SHOWN ARE IN MICROGRAMS PER LITER (mg/L). ANALYTE NC GCLs B Benzene (mg/L)5,000 T Toluene (mg/L)260,000 E Ethylbenzene (mg/L)84,500 X Total Xylenes (mg/L)85,500 MTBE Methyl Tertiary Butyl Ether (mg/L)20,000 NC GCLs = NORTH CAROLINA GROSS CONTAMINANT LEVELS. N GROUNDWATER ANALYTICAL MAP SEPTEMBER 2020 - AUGUST 2024 MW-1 Date 9/3/2020 10/19/2021 8/10/2022 8/10/2023 8/9/2024 B 4,670 5,240 4,620 4,020 NS-Abandoned T 53.5 54.9 2,780 <50.0 E 3,030 2,510 2,440 3,530 X 8,420 4,070 6,070 9,100 MTBE 288 250 1,260 235 MW-3RR Date 9/3/2020 10/19/2021 8/10/2022 8/10/2023 8/9/2024 B 9,660 7,150 9,040 9,700 7,210 T 61,700 46,200 35,500 73,900 40,000 E 3,280 2,390 2,280 3,990 2,710 X 16,900 12,200 11,300 20,400 13,800 MTBE 744 2,790 1,730 2,510 2,250 BOLD MW-1A Date 9/3/2020 10/19/2021 8/10/2022 8/10/2023 8/9/2024 B 6,930 2,410 4,900 438 NS-Abandoned T 4,300 4,900 9,400 316 E 2,900 1,600 2,260 1,310 X 14,500 7,750 11,400 5,950 MTBE 4,540 1,920 4,070 113 ATLANTIC RICHFIELD COMPANY C/O BP PRODUCTS NORTH AMERICA, INC. FORMER BP STATION 972 101 SENECA PLACE, CHARLOTTE, NORTH CAROLINA ANNUAL GROUNDWATER MONITORING REPORT-2024 FIGURE NOT GAUGED(NG) SO U T H B O U L E V A R D MW-5 (NS) MW-2R MW-1A MW-1 MW-4 MW-7 (NS) MW-11 (NS) MW-12 (NS) MW-3RR (7,210) MW-6 MW-9 MW-10 (NS) MW-8 (NS) MW-2 MW-3R MW-3 5,000 SENECA PLACE LEGEND APPROXIMATE PROPERTY LINE ADJACENT PROPERTIES ACTIVE MONITORING WELL ABANDONED MONITORING WELL NOT SAMPLED BENZENE CONCENTRATION IN MICROGRAMS PER LITER (μg/L) ESTIMATED BENZENE ISOCONCENTRATION CONTOUR (μg/L) GCL STANDARD 0 GRAPHIC SCALE 80'120' BENZENE ISOCONCENTRATION MAP AUGUST 09, 2024 (7,210) 5,000 NOTES : 1) THE NORTH CAROLINA GCL STANDARD FOR BENZENE IS 5,000 μg/L. N 5CIT Y : ( R e q d ) D I V / G R O U P : ( R e q d ) D B : ( R e q d ) L D : ( O p t ) P I C : ( O p t ) P M : ( R e q d ) T M : ( O p t ) L Y R : ( O p t ) O N = * ; O F F = * R E F * C: \ U s e r s \ n a i k u v 3 1 5 9 \ D C \ A C C D o c s \ A r c a d i s A C C U S \ A U S - 9 9 9 9 9 9 9 9 - B P _ 9 7 2 _ C H A R L O T T E _ N C \ P r o j e c t F i l e s \ 1 0 _ W I P \ 1 0 T _ A R C _ E N V \ 2 0 2 4 \ 0 1 - D W G \ G W M - 2 0 2 4 - F 0 5 - B E N Z E N E I S O C O N C E N T R I C M A P . d w g L A Y O U T : 5 S A V E D : 9 / 4 / 2 0 2 4 9 : 4 6 A M A C A D V E R : 2 4 . 3 S ( L M S T E C H ) P A G E S E T U P : - - - - PL O T S T Y L E T A B L E : P L T F U L L . C T B P L O T T E D : 9 / 4 / 2 0 2 4 9 : 4 7 A M B Y : N A I K U , V I N A Y ATLANTIC RICHFIELD COMPANY C/O BP PRODUCTS NORTH AMERICA, INC. FORMER BP STATION 972 101 SENECA PLACE, CHARLOTTE, NORTH CAROLINA ANNUAL GROUNDWATER MONITORING REPORT-2024 FIGURE (NS) APPENDIX A Historical Groundwater Elevation Data Date TOC (feet btoc)(feet btoc)(feet btoc) LNAPL (feet)(feet)1 Elevation 1 02/26/98 ND 15.83 ND 717.13 717.1306/11/98 ND 16.27 ND 716.69 716.6911/20/00 dry dry dry dry dry12/19/00 dry dry dry dry dry10/17/02 dry dry dry dry dry02/05/03 ND 18.20 ND 714.76 714.76 02/20/03 ND 17.59 ND 715.37 715.3703/21/03 ND 15.08 ND 717.88 717.8806/13/03 ND 12.50 ND 720.46 720.4608/11/03 ND 16.10 ND 716.86 716.8609/29/03 ND 17.40 ND 715.56 715.563/3/2004 ND 17.06 ND 715.90 715.9011/15/2004 ND 18.59 ND 714.37 714.372/16/2006 ND 16.96 ND 716.00 716.005/17/2007 ND 17.71 ND 715.25 715.2511/15/2008 ND 20.90 ND 712.06 712.0608/09/11 ND 20.55 ND 712.41 712.4107/25/12 ND 21.48 ND 711.48 711.4808/28/13 ND 18.99 ND 713.97 713.9708/19/14 ND 19.06 ND 713.90 713.9009/29/15 dry dry dry dry dry09/19/16 ND 20.29 ND 712.67 712.6709/13/17 ND 19.16 ND 713.80 713.8008/22/18 ND 20.05 ND 712.91 712.9109/04/19 ND 18.30 ND 714.66 714.6609/03/20 ND 17.68 ND 715.28 715.2810/19/21 ND 21.12 ND 711.84 711.84 08/10/22 ND 21.55 ND 711.41 711.4108/10/23 ND 17.70 ND 715.26 715.2608/09/24 02/26/98 ND 16.36 ND 716.35 716.3506/11/98 ND 17.04 ND 715.67 715.6711/20/00 ND 24.11 ND 708.60 708.6012/19/00 ND 24.56 ND 708.15 708.1510/17/02 ND 23.40 ND 709.31 709.3112/19/02 ND 20.52 ND 712.19 712.1902/05/03 ND 19.00 ND 713.71 713.7102/20/03 ND 19.05 ND 713.66 713.6603/21/03 ND 16.50 ND 716.21 716.2104/29/03 ND 15.50 ND 717.21 717.2106/13/03 ND 13.81 ND 718.90 718.9008/11/03 ND 15.30 ND 717.41 717.4109/29/03 ND 18.00 ND 714.71 714.713/3/2004 ND 18.00 ND 714.71 714.7111/15/2004 ND 18.08 ND 714.63 714.632/16/2006 ND 17.29 ND 715.42 715.425/17/2007 ND 18.05 ND 714.66 714.6611/5/2008 ND 20.40 ND 712.31 712.3108/09/11 ND 20.84 ND 711.87 711.8707/25/12 ND 21.63 ND 711.08 711.0808/28/13 ND 19.04 ND 713.67 713.67 08/19/14 ND 19.11 ND 713.60 713.6009/29/15 ND 20.36 ND 712.35 712.35 09/19/16 ND 18.35 ND 714.36 714.3609/13/17 ND 19.31 ND 713.40 713.40 08/22/18 ND 20.40 ND 712.31 712.3109/04/19 ND 18.50 ND 714.21 714.2109/03/20 ND 17.10 ND 715.61 715.6110/19/21 ND 21.45 ND 711.26 711.2608/10/22 ND 21.75 ND 710.96 710.9608/10/23 ND 17.78 ND 714.93 714.93 08/10/2302/26/98 ND 14.93 ND 718.58 718.5806/11/98 ND 15.26 ND 718.25 718.2511/20/00 21.99 22.75 0.76 710.76 711.3212/19/00 22.10 ND* 1.90 ND*ND*10/17/02 22.56 ND* 1.44 ND*ND*02/05/03 ND 17.78 ND 715.73 715.7302/20/03 ND 17.65 ND 715.86 715.8603/21/03 ND 18.19 ND 715.32 715.3206/13/03 ND 12.75 ND 720.76 720.7608/11/03 ND 14.68 ND 718.83 718.8309/29/03 ND 16.35 ND 717.16 717.163/3/2004 ND 16.73 ND 716.78 716.7811/15/2004 ND 17.38 ND 716.13 716.132/16/2006 ND 16.53 ND 716.98 716.985/17/2007 ND 4.42 ND 729.09 729.0911/5/2008 ND 5.61 ND 727.90 727.9008/09/11 08/09/11 ND 22.10 ND 710.92 710.9207/25/12 ND 21.54 ND 711.48 711.48 08/28/13 ND 18.90 ND 714.12 714.1208/19/14 ND 19.04 ND 713.98 713.98 09/29/15 ND 22.43 ND 710.59 710.5909/19/16 ND 20.31 ND 712.71 712.71 09/13/17 ND 19.39 ND 713.63 713.6308/22/18 ND 20.20 ND 712.82 712.8209/04/19 ND 18.26 ND 714.76 714.7609/03/20 ND 17.66 ND 715.36 715.3610/19/21 ND 21.14 ND 711.88 711.8808/10/22 ND 21.76 ND 711.26 711.2608/10/23 ND 17.52 ND 715.50 715.5008/10/23 Well ID 733.51MW-2 MW-1 732.96 MW-1A 732.71 MW-2R 733.02 Page 1 of 5 Date TOC (feet btoc)(feet btoc)(feet btoc) LNAPL (feet)(feet)1 Elevation 1 Well ID 02/26/98 ND 15.73 ND 716.39 716.3906/11/98 ND 16.13 ND 715.99 715.9911/20/00 dry dry dry dry dry12/19/00 dry dry dry dry dry10/17/02 dry dry dry dry dry12/19/02 ND 20.01 ND 712.11 712.11 02/05/03 ND 19.05 ND 713.07 713.0702/20/03 dry dry dry dry dry03/21/03 ND 16.81 ND 715.31 715.3106/13/03 ND 13.80 ND 718.32 718.3208/11/03 ND 15.45 ND 716.67 716.6709/23/03 09/29/03 ND 16.95 MW-4 731.89 MW-3 732.12 731.72 MW-5 731.10 MW-3RR 728.32 MW-3R Page 2 of 5 Date TOC (feet btoc)(feet btoc)(feet btoc) LNAPL (feet)(feet)1 Elevation 1 Well ID 06/11/98 ND 14.66 ND 715.64 715.6411/20/00 23.58 23.92 0.34 706.38 706.6312/19/00 23.62 24.00 0.38 706.30 706.5810/17/02 24.95 ND* 0.05 ND*ND*12/19/02 21.69 22.05 0.36 708.25 708.5102/05/03 ND 20.51 ND 709.79 709.79 02/20/03 ND 20.01 ND 710.29 710.2903/21/03 ND 18.91 ND 711.39 711.3904/29/03 ND 17.18 ND 713.12 713.1206/13/03 ND 15.50 ND 714.80 714.8008/11/03 ND 15.28 ND 715.02 715.0209/29/03 ND 16.91 ND 713.39 713.393/3/2004 ND 17.41 ND 712.89 712.8911/15/2004 ND 18.01 ND 712.29 712.292/16/2006 ND 16.83 ND 713.47 713.475/17/2007 ND 16.03 ND 714.27 714.2711/5/2008 ND 21.10 ND 709.20 709.2008/09/11 ND 20.32 ND 709.98 709.9807/25/12 ND 21.18 ND 709.12 709.12 08/28/13 ND 18.78 ND 711.52 711.5208/19/14 ND 18.42 ND 711.88 711.8809/29/15 ND 22.00 ND 708.30 708.3009/19/16 ND 19.86 ND 710.44 710.4409/13/17 ND 18.92 ND 711.38 711.3808/22/18 ND 19.65 ND 710.65 710.6509/04/19 ND 17.12 ND 713.18 713.1809/03/20 ND 17.40 ND 712.90 712.9010/19/21 ND 20.22 ND 710.08 710.0808/10/22 ND 20.15 ND 710.15 710.1508/10/23 ND 17.07 ND 713.23 713.2308/09/2406/11/98 ND 14.33 ND 715.36 715.36 11/20/00 ND 21.02 ND 708.67 708.6712/19/00 ND 20.70 ND 708.99 708.99 10/17/02 ND 17.15 ND 712.54 712.5412/19/02 ND 13.83 ND 715.86 715.8602/05/03 ND 12.95 ND 716.74 716.7402/20/03 dry dry dry dry dry03/21/03 ND 11.66 ND 718.03 718.0304/29/03 ND 10.83 ND 718.86 718.8606/13/03 ND 10.02 ND 719.67 719.6708/11/03 ND 11.48 ND 718.21 718.2109/29/03 ND 12.95 ND 716.74 716.743/3/2004 ND 13.26 ND 716.43 716.4311/15/2004 ND 13.47 ND 716.22 716.222/16/2006 ND 12.32 ND 717.37 717.375/17/2007 ND 12.78 ND 716.91 716.9111/5/2008 ND 16.88 ND 712.81 712.8108/09/11 ND 18.29 ND 711.40 711.4007/25/12 ND 18.70 ND 710.99 710.9908/28/13 ND 15.69 ND 714.00 714.0008/19/14 ND 16.14 ND 713.55 713.5509/29/15 ND 17.43 ND 712.26 712.2609/19/16 ND 16.47 ND 713.22 713.2209/13/17 ND 15.33 ND 714.36 714.3608/22/18 ND 16.50 ND 713.19 713.1909/04/19 ND 14.34 ND 715.35 715.3509/03/20 ND 14.44 ND 715.25 715.2510/19/21 ND 18.19 ND 711.50 711.5008/10/22 ND 17.33 ND 712.36 712.3608/10/23 ND 14.90 ND 714.79 714.7908/09/24 ND 14.40 ND 715.29 715.2906/11/98 ND 11.17 ND 712.62 712.6211/20/00 ND 17.60 ND 706.19 706.1912/19/00 ND 17.54 ND 706.25 706.2510/17/02 ND 16.83 ND 706.96 706.9612/19/02 ND 13.91 ND 709.88 709.88 02/05/03 ND 13.77 ND 710.02 710.0202/20/03 ND 12.20 ND 711.59 711.5903/21/03 ND 11.12 ND 712.67 712.6704/29/03 ND 9.38 ND 714.41 714.4106/13/03 ND 8.00 ND 715.79 715.7908/11/03 ND 10.23 ND 713.56 713.5609/29/03 ND 12.18 ND 711.61 711.613/3/2004 ND 11.39 ND 712.40 712.4011/15/2004 ND 12.31 ND 711.48 711.482/16/2006 ND 11.10 ND 712.69 712.695/17/2007 ND 12.21 ND 711.58 711.5811/5/2008 ND 14.75 ND 709.04 709.0408/09/11 ND 14.95 ND 708.84 708.84 07/25/12 ND 14.38 ND 709.41 709.4108/28/13 ND 12.69 ND 711.10 711.10 08/19/14 ND 12.95 ND 710.84 710.8409/29/15 ND 14.46 ND 709.33 709.33 09/19/16 ND 14.07 ND 709.72 709.7209/13/17 ND 11.87 ND 711.92 711.9208/22/18 ND 13.1 ND 710.69 710.6909/04/19 ND 11.76 ND 712.03 712.0309/03/20 ND 12.18 ND 711.61 711.6110/19/21 ND 15.97 ND 707.82 707.8208/10/22 ND 16.25 ND 707.54 707.5408/10/2308/10/23 Unable to locate MW-6 730.30 MW-7 729.69 MW-8 723.79 Page 3 of 5 Date TOC (feet btoc)(feet btoc)(feet btoc) LNAPL (feet)(feet)1 Elevation 1 Well ID 06/11/98 ND 14.24 ND 713.34 713.3411/20/00 dry dry dry dry dry12/19/00 dry dry dry dry dry10/17/02 dry dry dry dry dry12/19/02 ND 22.09 ND 705.49 705.4902/05/03 ND 19.98 ND 707.60 707.6002/20/03 ND 19.48 ND 708.10 708.1004/29/03 ND 14.76 ND 712.82 712.8206/13/03 ND 12.60 ND 714.98 714.9808/11/03 ND 15.05 ND 712.53 712.5309/29/03 ND 17.93 ND 709.65 709.653/3/2004 ND 16.64 ND 710.94 710.942/16/2006 ND 15.81 ND 711.77 711.775/17/2007 ND 16.03 ND 711.55 711.5511/5/2008 ND 21.74 ND 705.84 705.8408/09/11 ND 21.45 ND 706.13 706.1307/25/12 ND 22.29 ND 705.29 705.2908/28/13 ND 19.38 ND 708.20 708.2008/19/14 ND 19.18 ND 708.40 708.4009/29/15 ND 22.85 ND 704.73 704.7309/19/16 ND 20.91 ND 706.67 706.6709/13/17 ND 19.86 ND 707.72 707.7208/22/18 ND 20.14 ND 707.44 707.4409/04/19 ND 19.42 ND 708.16 708.1609/03/20 ND 19.50 ND 708.08 708.0810/19/21 ND 22.95 ND 704.63 704.6308/10/22 ND 22.43 ND 705.15 705.1508/10/23 ND 17.95 ND 709.63 709.6308/09/24 06/11/98 ND 11.43 ND 711.27 711.2711/20/00 ND 17.05 ND 705.65 705.65 12/19/00 ND 14.29 ND 708.41 708.4110/17/02 ND 9.77 ND 712.93 712.93 02/05/03 ND 10.60 ND 712.10 712.1002/20/03 ND 9.21 ND 713.49 713.4903/21/03 ND 6.26 ND 716.44 716.4404/29/03 ND 7.70 ND 715.00 715.0006/13/03 ND 6.30 ND 716.40 716.4008/11/03 ND 9.68 ND 713.02 713.0209/29/03 ND 11.15 ND 711.55 711.553/3/2004 ND 8.65 ND 714.05 714.0511/15/2004 ND 11.72 ND 710.98 710.982/16/2006 ND 13.73 ND 708.97 708.975/17/2007 ND 14.02 ND 708.68 708.6811/5/2008 ND 14.24 ND 708.46 708.4608/09/11 ND 11.67 ND 711.03 711.03 07/25/12 ND 12.35 ND 710.35 710.3508/28/13 ND 12.95 ND 709.75 709.75 08/19/14 ND 13.50 ND 709.20 709.2009/29/15 ND 9.85 ND 712.85 712.8509/19/16 ND 17.72 ND 704.98 704.9809/13/17 ND 11.02 ND 711.68 711.6808/22/18 ND 15.30 ND 707.40 707.4009/04/19 ND 14.60 ND 708.10 708.1009/03/20 ND 13.72 ND 708.98 708.9810/19/21 ND 17.70 ND 705.00 705.0008/10/22 ND 14.05 ND 708.65 708.6508/10/23 ND 12.50 ND 710.20 710.2008/09/24 ND 12.25 ND 710.45 710.4506/11/98 ND 12.25 ND 713.42 713.4211/20/00 ND 18.35 ND 707.32 707.3212/19/00 ND 18.03 ND 707.64 707.6410/17/02 ND 17.20 ND 708.47 708.4712/19/02 ND 14.21 ND 711.46 711.4602/05/03 ND 13.25 ND 712.42 712.4202/20/03 ND 13.88 ND 711.79 711.7903/21/03 ND 12.78 ND 712.89 712.8904/29/03 ND 10.43 ND 715.24 715.2406/13/03 ND 9.43 ND 716.24 716.2408/11/03 ND 10.98 ND 714.69 714.6909/29/03 ND 12.81 ND 712.86 712.863/3/2004 ND 12.60 ND 713.07 713.0711/15/2004 ND 13.13 ND 712.54 712.542/16/2006 ND 11.90 ND 713.77 713.775/17/2007 ND 12.80 ND 712.87 712.8711/5/2008 ND 15.40 ND 710.27 710.2708/09/11 ND 15.99 ND 709.68 709.6807/25/12 ND 15.36 ND 710.31 710.3108/28/13 ND 13.42 ND 712.25 712.2508/19/14 ND 13.75 ND 711.92 711.9209/29/15 ND 16.38 ND 709.29 709.29 09/19/16 ND 15.20 ND 710.47 710.4709/13/17 ND 13.57 ND 712.10 712.10 08/22/18 ND 14.00 ND 711.67 711.6709/04/19 ND 12.78 ND 712.89 712.89 09/03/20 ND 12.15 ND 713.52 713.5210/19/21 ND 16.15 ND 709.52 709.5208/10/22 ND 15.55 ND 710.12 710.1208/10/23 ND 13.40 ND 712.27 712.27 08/09/24 725.67 MW-10 722.70 MW-9 727.58 MW-11 Page 4 of 5 Date TOC (feet btoc)(feet btoc)(feet btoc) LNAPL (feet)(feet)1 Elevation 1 Well ID 09/29/03 ND 17.27 ND 714.08 714.083/3/2004 ND 17.81 ND 713.54 713.5411/15/2004 ND 18.66 ND 712.69 712.692/16/2006 ND 17.84 ND 713.51 713.515/17/2007 ND 16.38 ND 714.97 714.9711/5/2008 ND 21.87 ND 709.48 709.4808/09/11 ND 20.35 ND 711.00 711.00 07/25/12 ND 21.23 ND 710.12 710.1208/28/13 ND 19.18 ND 712.17 712.17 08/19/14 ND 18.75 ND 712.60 712.6009/29/15 ND 22.36 ND 708.99 708.99 09/19/16 ND 20.44 ND 710.91 710.9109/13/17 ND 19.66 ND 711.69 711.6908/22/18 ND 20.6 ND 710.75 710.7509/04/19 ND 18.23 ND 713.12 713.1209/04/19 ND 17.95 ND 713.40 713.4010/19/21 ND 20.43 ND 710.92 710.9208/10/22 ND 20.20 ND 711.15 711.1508/10/2308/09/24 Notes:TOC Elevations surveyed relative to mean sea level on 08/26/09 and on 08/09/11 for MW-2R and MW-3RR. TOC = top of casing btoc = below top of casing MW-12 731.35 Page 5 of 5 APPENDIX B Laboratory Analytical Report and Chain-of-Custody Record – August 20, 2024 ANALYTICAL REPORT PREPARED FOR Attn: Hardik Patel Arcadis U.S., Inc. 175 Regency Woods Place Suite 400 Cary, North Carolina 27518 Generated 8/20/2024 8:06:05 AM JOB DESCRIPTION BP 972 JOB NUMBER 400-260606-1 See page two for job notes and contact information. Pensacola FL 32514 3355 McLemore Drive Eurofins Pensacola Page 1 of 19 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Eurofins Pensacola Eurofins Pensacola is a laboratory within Eurofins Environment Testing Southeast, LLC, a company within Eurofins Environment Testing Group of Companies Job Notes This report may not be reproduced except in full, and with written approval from the laboratory. The results relate only to the samples tested. For questions please contact the Project Manager at the e-mail address or telephone number listed on this page. The test results in this report relate only to the samples as received by the laboratory and will meet all requirements of the methodology, with any exceptions noted. This report shall not be reproduced except in full, without the express written approval of the laboratory. All questions should be directed to the Eurofins Environment Testing Southeast, LLC Project Manager. Authorization Generated 8/20/2024 8:06:05 AM Authorized for release by Leah Klingensmith, Senior Project Manager Leah.Klingensmith@et.eurofinsus.com (615)301-5038 Page 2 of 19 8/20/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Table of Contents Client: Arcadis U.S., Inc. Project/Site: BP 972 Laboratory Job ID: 400-260606-1 Page 3 of 19 Eurofins Pensacola8/20/2024 Cover Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 Table of Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 Sample Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 Case Narrative . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 Client Sample Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7 Surrogate Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9 QC Sample Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10 QC Association . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13 Chronicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14 Method Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16 Certification Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17 Chain of Custody . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18 Receipt Checklists . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Sample Summary Client: Arcadis U.S., Inc.Job ID: 400-260606-1 Project/Site: BP 972 Lab Sample ID Client Sample ID Matrix Collected Received 400-260606-1 MW-3RR Water 08/09/24 07:30 08/10/24 08:29 400-260606-2 TRIP BLANK Water 08/09/24 12:00 08/10/24 08:29 Eurofins PensacolaPage 4 of 19 8/20/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Job Narrative400-260606-1 Analytical test results meet all requirements of the associated regulatory program listed on the Accreditation/Certification SummaryPageunlessotherwisenotedundertheindividualanalysis.Data qualifiers and/or narrative comments are included to explain any exceptions,if applicable. ·Matrix QC may not be reported if insufficient sample is provided or site-specific QC samples were not submitted.In these situations,to demonstrate precision and accuracy at a batch level,a LCS/LCSD may be performed,unless otherwise specified in the method.·Surrogate and/or isotope dilution analyte recoveries (if applicable)which are outside of the QC window are confirmed unless attributed to a dilution or otherwise noted in the narrative. Regulated compliance samples (e.g.SDWA,NPDES)must comply with the associated agency requirements/permits. Receipt The samples were received on 8/10/2024 8:29 AM.Unless otherwise noted below,the samples arrived in good condition,and, where required,properly preserved and on ice.The temperature of the cooler at receipt time was 0.2°C. GC/MS VOAMethodSM6200_B:The following sample was diluted to bring the concentration of target analytes within the calibration range: MW-3RR (400-260606-1).Elevated reporting limits (RLs)are provided. No additional analytical or quality issues were noted,other than those described above or in the Definitions/Glossary page. Case Narrative Client: Arcadis U.S., Inc.Job ID: 400-260606-1 Project: BP 972 Eurofins Pensacola Job ID: 400-260606-1 Eurofins Pensacola Page 5 of 19 8/20/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Definitions/Glossary Job ID: 400-260606-1Client: Arcadis U.S., Inc. Project/Site: BP 972 Glossary These commonly used abbreviations may or may not be present in this report. ¤Listed under the "D" column to designate that the result is reported on a dry weight basis Abbreviation %R Percent Recovery CFL Contains Free Liquid CFU Colony Forming Unit CNF Contains No Free Liquid DER Duplicate Error Ratio (normalized absolute difference) Dil Fac Dilution Factor DL Detection Limit (DoD/DOE) DL, RA, RE, IN Indicates a Dilution, Re-analysis, Re-extraction, or additional Initial metals/anion analysis of the sample DLC Decision Level Concentration (Radiochemistry) EDL Estimated Detection Limit (Dioxin) LOD Limit of Detection (DoD/DOE) LOQ Limit of Quantitation (DoD/DOE) MCL EPA recommended "Maximum Contaminant Level" MDA Minimum Detectable Activity (Radiochemistry) MDC Minimum Detectable Concentration (Radiochemistry) MDL Method Detection Limit ML Minimum Level (Dioxin) MPN Most Probable Number MQL Method Quantitation Limit NC Not Calculated ND Not Detected at the reporting limit (or MDL or EDL if shown) NEG Negative / Absent POS Positive / Present PQL Practical Quantitation Limit PRES Presumptive QC Quality Control RER Relative Error Ratio (Radiochemistry) RL Reporting Limit or Requested Limit (Radiochemistry) RPD Relative Percent Difference, a measure of the relative difference between two points TEF Toxicity Equivalent Factor (Dioxin) TEQ Toxicity Equivalent Quotient (Dioxin) TNTC Too Numerous To Count Eurofins Pensacola Page 6 of 19 8/20/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Client Sample Results Job ID: 400-260606-1Client: Arcadis U.S., Inc. Project/Site: BP 972 Lab Sample ID: 400-260606-1Client Sample ID: MW-3RR Matrix: WaterDate Collected: 08/09/24 07:30 Date Received: 08/10/24 08:29 Method: SM 6200 B-2011 - Volatile Organic Compounds RL MDL 7210 100 ug/L 08/14/24 12:21 100 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier Benzene 100 ug/L 08/14/24 12:21 1002710Ethylbenzene 100 ug/L 08/14/24 12:21 1002250Methyl tert-butyl ether 1000 ug/L 08/14/24 12:21 10013800Xylenes, Total 4-Bromofluorobenzene 100 72-130 08/14/24 12:21 100 Surrogate Dil FacAnalyzedPreparedQualifierLimits%Recovery Toluene-d8 (Surr)97 08/14/24 12:21 10064-132 Dibromofluoromethane 97 08/14/24 12:21 10075-126 Method: SM 6200 B-2011 - Volatile Organic Compounds - DL RL MDL 40000 200 ug/L 08/16/24 12:40 200 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier Toluene 4-Bromofluorobenzene 101 72-130 08/16/24 12:40 200 Surrogate Dil FacAnalyzedPreparedQualifierLimits%Recovery Toluene-d8 (Surr)97 08/16/24 12:40 20064-132 Dibromofluoromethane 99 08/16/24 12:40 20075-126 Eurofins Pensacola Page 7 of 19 8/20/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Client Sample Results Job ID: 400-260606-1Client: Arcadis U.S., Inc. Project/Site: BP 972 Lab Sample ID: 400-260606-2Client Sample ID: TRIP BLANK Matrix: WaterDate Collected: 08/09/24 12:00 Date Received: 08/10/24 08:29 Method: SM 6200 B-2011 - Volatile Organic Compounds RL MDL ND 1.00 ug/L 08/14/24 08:56 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier Benzene 1.00 ug/L 08/14/24 08:56 1NDEthylbenzene 1.00 ug/L 08/14/24 08:56 1NDMethyl tert-butyl ether 1.00 ug/L 08/14/24 08:56 1NDToluene 10.0 ug/L 08/14/24 08:56 1NDXylenes, Total 4-Bromofluorobenzene 100 72-130 08/14/24 08:56 1 Surrogate Dil FacAnalyzedPreparedQualifierLimits%Recovery Toluene-d8 (Surr)97 08/14/24 08:56 164-132 Dibromofluoromethane 104 08/14/24 08:56 175-126 Eurofins Pensacola Page 8 of 19 8/20/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Surrogate Summary Job ID: 400-260606-1Client: Arcadis U.S., Inc. Project/Site: BP 972 Method: 6200 B-2011 - Volatile Organic Compounds Prep Type: Total/NAMatrix: Water Lab Sample ID Client Sample ID (72-130)(64-132)(75-126) BFB TOL DBFM 100 97 97400-260606-1 Percent Surrogate Recovery (Acceptance Limits) MW-3RR 101 97 99400-260606-1 - DL MW-3RR 100 97 104400-260606-2 TRIP BLANK 100 96 98400-260633-A-3 MS Matrix Spike 102 99 97400-260633-A-3 MSD Matrix Spike Duplicate 101 97 97400-260654-C-2 MS Matrix Spike 101 97 97400-260654-C-2 MSD Matrix Spike Duplicate 101 100 99LCS 400-681038/1002 Lab Control Sample 101 100 98LCS 400-681349/1002 Lab Control Sample 99 97 103MB 400-681038/4 Method Blank 101 98 102MB 400-681349/4 Method Blank Surrogate Legend BFB = 4-Bromofluorobenzene TOL = Toluene-d8 (Surr) DBFM = Dibromofluoromethane Eurofins Pensacola Page 9 of 19 8/20/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 QC Sample Results Job ID: 400-260606-1Client: Arcadis U.S., Inc. Project/Site: BP 972 Method: 6200 B-2011 - Volatile Organic Compounds Client Sample ID: Method BlankLab Sample ID: MB 400-681038/4 Matrix: Water Prep Type: Total/NA Analysis Batch: 681038 RL MDL Benzene ND 1.00 ug/L 08/14/24 08:11 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResultQualifier ND 1.00 ug/L 08/14/24 08:11 1Ethylbenzene ND 1.00 ug/L 08/14/24 08:11 1Methyl tert-butyl ether ND 1.00 ug/L 08/14/24 08:11 1Toluene ND 10.0 ug/L 08/14/24 08:11 1Xylenes, Total 4-Bromofluorobenzene 99 72-130 08/14/24 08:11 1 MB MB Surrogate Dil FacPreparedAnalyzedQualifierLimits%Recovery 97 08/14/24 08:11 1Toluene-d8 (Surr)64-132 103 08/14/24 08:11 1Dibromofluoromethane75-126 Client Sample ID: Lab Control SampleLab Sample ID: LCS 400-681038/1002 Matrix: Water Prep Type: Total/NA Analysis Batch: 681038 Benzene 50.0 47.65 ug/L 95 70-130 Analyte LCS LCS DUnitResultQualifier %Rec Spike Added %Rec Limits Ethylbenzene 50.0 45.73 ug/L 91 70-130 Methyl tert-butyl ether 50.0 52.44 ug/L 105 66-130 Toluene 50.0 46.23 ug/L 92 70-130 Xylenes, Total 100 90.73 ug/L 91 70-130 4-Bromofluorobenzene 72 -130 Surrogate 101 LCS LCS Qualifier Limits%Recovery 100Toluene-d8 (Surr)64 -132 99Dibromofluoromethane 75 -126 Client Sample ID: Matrix SpikeLab Sample ID: 400-260633-A-3 MS Matrix: Water Prep Type: Total/NA Analysis Batch: 681038 Benzene 2.85 50.0 43.67 ug/L 82 56-142 Analyte MS MS DUnitResultQualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits Ethylbenzene 3.08 50.0 35.97 ug/L 66 58-131 Methyl tert-butyl ether ND 50.0 50.74 ug/L 100 59-137 Toluene ND 50.0 36.55 ug/L 73 65-130 Xylenes, Total ND 100 66.19 ug/L 66 59-130 4-Bromofluorobenzene 72 -130 Surrogate 100 MS MS Qualifier Limits%Recovery 96Toluene-d8 (Surr)64 -132 98Dibromofluoromethane 75 -126 Eurofins Pensacola Page 10 of 19 8/20/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 QC Sample Results Job ID: 400-260606-1Client: Arcadis U.S., Inc. Project/Site: BP 972 Method: 6200 B-2011 - Volatile Organic Compounds (Continued) Client Sample ID: Matrix Spike DuplicateLab Sample ID: 400-260633-A-3 MSD Matrix: Water Prep Type: Total/NA Analysis Batch: 681038 Benzene 2.85 50.0 48.18 ug/L 91 56-142 10 30 Analyte MSD MSD DUnitResultQualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits LimitRPD RPD Ethylbenzene 3.08 50.0 42.88 ug/L 80 58-131 18 30 Methyl tert-butyl ether ND 50.0 54.38 ug/L 107 59-137 7 30 Toluene ND 50.0 42.08 ug/L 84 65-130 14 30 Xylenes, Total ND 100 79.48 ug/L 79 59-130 18 30 4-Bromofluorobenzene 72 -130 Surrogate 102 MSD MSD Qualifier Limits%Recovery 99Toluene-d8 (Surr)64 -132 97Dibromofluoromethane 75 -126 Client Sample ID: Method BlankLab Sample ID: MB 400-681349/4 Matrix: Water Prep Type: Total/NA Analysis Batch: 681349 RL MDL Toluene ND 1.00 ug/L 08/16/24 08:06 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResultQualifier 4-Bromofluorobenzene 101 72-130 08/16/24 08:06 1 MB MB Surrogate Dil FacPreparedAnalyzedQualifierLimits%Recovery 98 08/16/24 08:06 1Toluene-d8 (Surr)64-132 102 08/16/24 08:06 1Dibromofluoromethane75-126 Client Sample ID: Lab Control SampleLab Sample ID: LCS 400-681349/1002 Matrix: Water Prep Type: Total/NA Analysis Batch: 681349 Toluene 50.0 46.93 ug/L 94 70-130 Analyte LCS LCS DUnitResultQualifier %Rec Spike Added %Rec Limits 4-Bromofluorobenzene 72 -130 Surrogate 101 LCS LCS Qualifier Limits%Recovery 100Toluene-d8 (Surr)64 -132 98Dibromofluoromethane 75 -126 Client Sample ID: Matrix SpikeLab Sample ID: 400-260654-C-2 MS Matrix: Water Prep Type: Total/NA Analysis Batch: 681349 Toluene ND 50.0 39.73 ug/L 79 65-130 Analyte MS MS DUnitResultQualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits 4-Bromofluorobenzene 72 -130 Surrogate 101 MS MS Qualifier Limits%Recovery 97Toluene-d8 (Surr)64 -132 97Dibromofluoromethane 75 -126 Eurofins Pensacola Page 11 of 19 8/20/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 QC Sample Results Job ID: 400-260606-1Client: Arcadis U.S., Inc. Project/Site: BP 972 Method: 6200 B-2011 - Volatile Organic Compounds (Continued) Client Sample ID: Matrix Spike DuplicateLab Sample ID: 400-260654-C-2 MSD Matrix: Water Prep Type: Total/NA Analysis Batch: 681349 Toluene ND 50.0 42.50 ug/L 85 65-130 7 30 Analyte MSD MSD DUnitResultQualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits LimitRPD RPD 4-Bromofluorobenzene 72 -130 Surrogate 101 MSD MSD Qualifier Limits%Recovery 97Toluene-d8 (Surr)64 -132 97Dibromofluoromethane 75 -126 Eurofins Pensacola Page 12 of 19 8/20/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 QC Association Summary Job ID: 400-260606-1Client: Arcadis U.S., Inc. Project/Site: BP 972 GC/MS VOA Analysis Batch: 681038 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Water 6200 B-2011400-260606-1 MW-3RR Total/NA Water 6200 B-2011400-260606-2 TRIP BLANK Total/NA Water 6200 B-2011MB 400-681038/4 Method Blank Total/NA Water 6200 B-2011LCS 400-681038/1002 Lab Control Sample Total/NA Water 6200 B-2011400-260633-A-3 MS Matrix Spike Total/NA Water 6200 B-2011400-260633-A-3 MSD Matrix Spike Duplicate Total/NA Analysis Batch: 681349 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Water 6200 B-2011400-260606-1 - DL MW-3RR Total/NA Water 6200 B-2011MB 400-681349/4 Method Blank Total/NA Water 6200 B-2011LCS 400-681349/1002 Lab Control Sample Total/NA Water 6200 B-2011400-260654-C-2 MS Matrix Spike Total/NA Water 6200 B-2011400-260654-C-2 MSD Matrix Spike Duplicate Total/NA Eurofins Pensacola Page 13 of 19 8/20/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Lab Chronicle Client: Arcadis U.S., Inc.Job ID: 400-260606-1 Project/Site: BP 972 Client Sample ID: MW-3RR Lab Sample ID: 400-260606-1 Matrix: WaterDate Collected: 08/09/24 07:30 Date Received: 08/10/24 08:29 Analysis 6200 B-2011 WPD08/14/24 12:21100 EET PEN681038 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Analysis 6200 B-2011 DL 200 681349 08/16/24 12:40 WPD EET PENTotal/NA 5 mL 5 mL Client Sample ID: TRIP BLANK Lab Sample ID: 400-260606-2 Matrix: WaterDate Collected: 08/09/24 12:00 Date Received: 08/10/24 08:29 Analysis 6200 B-2011 WPD08/14/24 08:561 EET PEN681038 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Client Sample ID: Method Blank Lab Sample ID: MB 400-681038/4 Matrix: WaterDate Collected: N/A Date Received: N/A Analysis 6200 B-2011 WPD08/14/24 08:111 EET PEN681038 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Client Sample ID: Method Blank Lab Sample ID: MB 400-681349/4 Matrix: WaterDate Collected: N/A Date Received: N/A Analysis 6200 B-2011 WPD08/16/24 08:061 EET PEN681349 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Client Sample ID: Lab Control Sample Lab Sample ID: LCS 400-681038/1002 Matrix: WaterDate Collected: N/A Date Received: N/A Analysis 6200 B-2011 WPD08/14/24 07:141 EET PEN681038 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Client Sample ID: Lab Control Sample Lab Sample ID: LCS 400-681349/1002 Matrix: WaterDate Collected: N/A Date Received: N/A Analysis 6200 B-2011 WPD08/16/24 07:091 EET PEN681349 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Client Sample ID: Matrix Spike Lab Sample ID: 400-260633-A-3 MS Matrix: WaterDate Collected: N/A Date Received: N/A Analysis 6200 B-2011 WPD08/14/24 12:441 EET PEN681038 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Eurofins Pensacola Page 14 of 19 8/20/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Lab Chronicle Client: Arcadis U.S., Inc.Job ID: 400-260606-1 Project/Site: BP 972 Client Sample ID: Matrix Spike Duplicate Lab Sample ID: 400-260633-A-3 MSD Matrix: WaterDate Collected: N/A Date Received: N/A Analysis 6200 B-2011 WPD08/14/24 13:071 EET PEN681038 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Client Sample ID: Matrix Spike Lab Sample ID: 400-260654-C-2 MS Matrix: WaterDate Collected: N/A Date Received: N/A Analysis 6200 B-2011 WPD08/16/24 13:031 EET PEN681349 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Client Sample ID: Matrix Spike Duplicate Lab Sample ID: 400-260654-C-2 MSD Matrix: WaterDate Collected: N/A Date Received: N/A Analysis 6200 B-2011 WPD08/16/24 13:251 EET PEN681349 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Laboratory References: EET PEN = Eurofins Pensacola, 3355 McLemore Drive, Pensacola, FL 32514, TEL (850)474-1001 Eurofins Pensacola Page 15 of 19 8/20/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Method Summary Job ID: 400-260606-1Client: Arcadis U.S., Inc. Project/Site: BP 972 Method Method Description LaboratoryProtocol SM6200 B-2011 Volatile Organic Compounds EET PEN SW8465030BPurge and Trap EET PEN Protocol References: SM = "Standard Methods For The Examination Of Water And Wastewater" SW846 = "Test Methods For Evaluating Solid Waste, Physical/Chemical Methods", Third Edition, November 1986 And Its Updates. Laboratory References: EET PEN = Eurofins Pensacola, 3355 McLemore Drive, Pensacola, FL 32514, TEL (850)474-1001 Eurofins Pensacola Page 16 of 19 8/20/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Accreditation/Certification Summary Client: Arcadis U.S., Inc.Job ID: 400-260606-1 Project/Site: BP 972 Laboratory: Eurofins Pensacola The accreditations/certifications listed below are applicable to this report. Authority Program Identification Number Expiration Date North Carolina (WW/SW)State 314 12-31-24 Eurofins Pensacola Page 17 of 19 8/20/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Page 18 of 19 8/20/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Login Sample Receipt Checklist Client: Arcadis U.S., Inc.Job Number: 400-260606-1 Login Number: 260606 Question Answer Comment Creator: (Roberts) Beecher, Alexis J List Source: Eurofins Pensacola List Number: 1 N/ARadioactivity wasn't checked or is </= background as measured by a survey meter. N/AThe cooler's custody seal, if present, is intact. N/ASample custody seals, if present, are intact. TrueThe cooler or samples do not appear to have been compromised or tampered with. TrueSamples were received on ice. TrueCooler Temperature is acceptable. TrueCooler Temperature is recorded.0.2°C IR8 TrueCOC is present. TrueCOC is filled out in ink and legible. TrueCOC is filled out with all pertinent information. TrueIs the Field Sampler's name present on COC? TrueThere are no discrepancies between the containers received and the COC. TrueSamples are received within Holding Time (excluding tests with immediate HTs) TrueSample containers have legible labels. TrueContainers are not broken or leaking. TrueSample collection date/times are provided. TrueAppropriate sample containers are used. TrueSample bottles are completely filled. N/ASample Preservation Verified. TrueThere is sufficient vol. for all requested analyses, incl. any requested MS/MSDs TrueContainers requiring zero headspace have no headspace or bubble is <6mm (1/4"). TrueMultiphasic samples are not present. TrueSamples do not require splitting or compositing. N/AResidual Chlorine Checked. Eurofins Pensacola Page 19 of 19 8/20/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 APPENDIX C Historical Groundwater Analytical Data Appendix CHistorical Groundwater Analytical Data Quick Shoppe # 5 101 Seneca Place Charlotte, Mecklenburg County, North Carolina NC DEQ Incident No. 18272 5,000 260,000 84,500 85,500 20,000 2/26/1998 27,000 37,000 1,200 19,000 56,000 3/13/2003 7,410 57,500 4,850 29,400 186 J 3/4/2004 9,090 13,200 1,530 7,820 16,400 11/16/2004 14,300 11,700 1,620 5,130 22,400 2/16/2006 4,560 3,960 906 2,510 5,260 5/17/2007 5,150 2,060 1,120 2,930 3,020 11/5/2008 9,200 15,000 1,700 J 8,800 J 10,000 8/9/2011 11,500 769 3,560 9,290 1,640 7/25/2012 14,200 623 3,570 9,570 1,950 8/28/2013 11,600 452 3,260 9,470 1,360 8/19/2014 7,510 352 2,700 9,630 1,080 9/19/2016 8,030 187 2,560 7,110 716 9/13/2017 6,650 101 2,570 7,030 752 9/4/2019 2,060 4,620 1,040 5,160 1,490 9/3/2020 4,670 53.5 3,030 8,420 288 10/19/2021 5,240 54.9 2,510 4,070 250 8/10/2022 4,620 2,780 2,440 6,070 1,260 8/10/2023 4,020 <50.0 3,530 9,100 235 2/26/1998 1,100 260 6.7 640 930 11/20/2000 4,600 2,300 410 2,000 8,000 2/21/2003 7,410 5,570 903 4,090 9,360 3/4/2004 7,840 9,680 1,670 8,320 9,420 11/16/2004 11,600 22,700 1,950 11,200 9,960 2/16/2006 10,600 21,400 1,990 11,200 9,540 5/17/2007 8,270 20,200 2,570 14,800 4,150 11/5/2008 9,000 3,500 2,000 7,200 4,800 8/9/2011 9,970 19,000 2,340 12,300 10,600 7/25/2012 10,800 24,000 2,540 13,000 11,200 8/28/2013 9,980 16,800 2,260 11,300 9,210 8/19/2014 3,790 21,300 2,400 14,100 2,230 9/29/2015 8,120 15,300 2,270 11,200 8,730 9/19/2016 8,580 16,100 2,730 14,700 8,230 9/13/2017 3,690 7,580 1,720 8,940 3,450 8/23/2018 8,310 12,200 2,900 13,300 7,170 9/4/2019 1,610 3,630 865 4,270 1,130 9/3/2020 6,930 14,300 2,900 14,500 4,540 10/19/2021 2,410 4,900 1,600 7,750 1,920 8/10/2022 4,900 9,400 2,260 11,400 4,070 8/10/2023 438 316 1,310 5,950 113 2/26/1998 1,900 34,000 12,000 71,000 < 500 3/13/2003 11,000 22,300 2,310 14,500 28,600 9/29/2003 5,980 45,500 2,820 18,500 < 100 3/4/2004 4,670 37,500 2,030 13,100 < 500 11/15/2004 6,380 50,300 3,300 20,100 < 500 2/16/2006 5,330 50,500 3,210 18,100 < 1,000 MW-1A MW-1 MW-2 Methyl Tert- Butyl Ether (µg/L) WellID Sample Date Benzene (µg/L) Toluene (µg/L) Ethylbenzene (µg/L) Total Xylenes (µg/L) Page 1 of 4 Appendix CHistorical Groundwater Analytical Data Quick Shoppe # 5 101 Seneca Place Charlotte, Mecklenburg County, North Carolina NC DEQ Incident No. 18272 5,000 260,000 84,500 85,500 20,000 Methyl Tert- Butyl Ether (µg/L) WellID Sample Date Benzene (µg/L) Toluene (µg/L) Ethylbenzene (µg/L) Total Xylenes (µg/L) 8/9/2011 8,200 23,900 2,950 15,100 1,120 7/25/2012 4,710 10,400 2,900 14,300 522 8/28/2013 4,110 6,170 3,140 15,700 453 8/19/2014 3,150 2,040 2,920 11,800 330 9/29/2015 3,800 2,270 3,340 15,500 308 9/19/2016 3,240 767 3,920 12,800 143 MW-3 2/26/1998 9,700 29,000 3,400 18,000 < 500 9/30/2003 12,400 33,000 2,450 12,800 335 3/4/2004 12,800 40,100 2,170 11,300 703 11/16/2004 16,200 47,100 2,470 14,600 428 J 2/16/2006 10,400 37,400 2,050 12,500 300 5/17/2007 10,800 38,700 2,290 13,300 < 250 8/9/2011 14,100 36,600 2,910 13,400 1,030 7/25/2012 13,200 49,600 3,240 14,700 1,010 8/28/2013 12,100 J 64,600 J 3,420 J 18,300 J 677 8/19/2014 12,600 49,600 3,110 16,500 986 9/29/2015 12,200 40,600 3,250 16,600 1,040 9/19/2016 12,600 47,200 3,210 15,200 909 9/13/2017 10,200 46,400 2,840 14,500 495 8/23/2018 6,920 71,700 3,700 19,700 < 125 9/4/2019 9,440 63,300 3,070 14,900 371 9/3/2020 9,660 61,700 3,280 16,900 744 10/19/2021 7,150 46,200 2,390 12,200 2,790 8/10/2022 9,040 35,500 2,280 11,300 1,730 8/10/2023 9,700 73,900 3,990 20,400 2,510 8/9/2024 7,210 40,000 2,710 13,800 2,250 2/26/1998 14,000 36,000 2,100 17,000 3,400 2/20/2003 1,990 9,170 2,510 12,700 < 25 3/3/2004 877 6,080 1,340 7,710 < 100 11/15/2004 1,060 7,770 3,040 16,500 < 100 5/17/2007 167 103 601 2,540 46 11/5/2008 21 J 35 580 3,400 < 2.5 8/9/2011 571 62 520 2,210 100 7/25/2012 480 58.7 748 2,850 22.9 8/28/2013 315 50.3 842 2,760 < 2.0 8/19/2014 167 26.4 656 1,940 < 2.0 9/29/2015 142 10.7 467 1,180 < 1.6 9/19/2016 121 12.5 505 977 < 2.50 2/26/1998 290 2,600 440 6,700 < 1.0 11/20/2000 4.6 16 220 1,000 61 2/20/2003 1.5 5.5 J 116 589 < 0.5 9/29/2003 < 2.5 16.3 137 685 13.9 3/3/2004 < 1.0 3.6 J 46.9 J 242 J < 1.0 11/15/2004 < 1.0 UJ 5.2 J 61.1 296 < 1.0 UJ 5/17/2007 12.1 35.2 132 700 < 10 11/5/2008 8.4 J 19 130 480 < 1.0 8/9/2011 6.7 5.2 70.1 267 < 0.26 MW-2R MW-4 MW-3RR MW-5 MW-3R Page 2 of 4 Appendix CHistorical Groundwater Analytical Data Quick Shoppe # 5 101 Seneca Place Charlotte, Mecklenburg County, North Carolina NC DEQ Incident No. 18272 5,000 260,000 84,500 85,500 20,000 Methyl Tert- Butyl Ether (µg/L) WellID Sample Date Benzene (µg/L) Toluene (µg/L) Ethylbenzene (µg/L) Total Xylenes (µg/L) 2/26/1998 4,700 51,000 3,200 18,000 < 500 2/21/2003 6,290 68,400 3,980 20,900 < 250 9/29/2003 4,600 41,300 2,610 14,300 < 250 3/3/2004 5,320 42,000 2,730 14,500 < 250 11/15/2004 6,930 56,300 3,340 17,800 < 250 2/16/2006 4,590 45,800 2,450 13,600 < 1000 5/17/2007 5,020 48,600 3,840 20,800 < 500 11/5/2008 5,400 48,000 3,100 17,000 140 J 8/9/2011 5,550 55,900 2,940 14,800 205 J 7/25/2012 5,250 64,900 5,060 27,000 < 260 8/28/2013 4,990 55,200 3,930 24,200 191 8/19/2014 4,300 50,500 3,530 20,000 210 J 9/29/2015 4,750 53,300 7,300 J 15,800 < 33 9/19/2016 3,180 38,100 2,750 13,600 289 2/26/1998 < 1.0 < 1.0 < 1.0 < 3.0 < 5.0 11/20/2000 < 1.0 < 1.0 < 1.0 < 3.0 < 5.0 3/21/2003 < 0.5 < 0.5 < 0.7 < 1.0 < 0.5 3/3/2004 < 0.5 < 0.5 < 0.5 < 1.0 < 0.5 11/5/2008 < 0.5 < 0.7 < 0.8 < 0.8 < 0.5 8/9/2011 < 0.13 < 0.13 < 0.15 < 0.3 < 0.13 2/26/1998 530 33 23 710 < 20 11/20/2000 2,000 480 310 2,300 < 50 2/21/2003 206 250 48.9 394 < 2.5 3/3/2004 404 421 149 1,060 <2.5 5/17/2007 663 4,310 1,180 6,620 < 25 11/5/2008 240 1,100 280 1,800 < 1.0 8/9/2011 387 801 360 2,240 < 2.6 7/25/2012 148 236 171 973 < 1.3 8/28/2013 190 242 264 1,840 < 1.0 8/19/2014 83.5 39.7 152 1,090 < 1.0 9/29/2015 < 0.17 < 0.17 < 0.15 < 0.43 < 0.16 9/19/2016 52.3 4.45 44.2 297 < 0.500 2/26/1998 14 25 84 700 < 5.0 2/21/2003 43.5 233 225 813 < 0.5 9/29/2003 93.6 993 378 1,690 < 10 3/3/2004 10.1 15.6 17.2 131 < 1.0 11/5/2008 320 4,300 940 4,200 < 5.0 8/9/2011 207 3,340 1,610 7,320 < 2.6 7/25/2012 238 821 1,150 4,830 < 6.5 8/28/2013 21.5 45.6 132 671 < 1.0 8/19/2014 2.4 1.2 9.6 79.6 < 0.10 9/29/2015 71 99.7 337 2,010 < 0.16 9/19/2016 125 91.7 717 2,590 < 0.500 MW-6 MW-7 MW-8 MW-9 Page 3 of 4 Appendix CHistorical Groundwater Analytical Data Quick Shoppe # 5 101 Seneca Place Charlotte, Mecklenburg County, North Carolina NC DEQ Incident No. 18272 5,000 260,000 84,500 85,500 20,000 Methyl Tert- Butyl Ether (µg/L) WellID Sample Date Benzene (µg/L) Toluene (µg/L) Ethylbenzene (µg/L) Total Xylenes (µg/L) 2/26/1998 < 1.0 < 1.0 < 1.0 < 3.0 < 5 11/20/2000 < 1.0 < 1.0 < 1.0 < 3.0 < 5 2/21/2003 < 0.5 < 0.5 < 0.7 < 1.0 < 0.5 3/3/2004 < 0.5 < 0.5 < 0.5 < 1.0 < 0.5 11/5/2008 < 0.5 < 0.7 < 0.8 < 0.8 < 0.5 8/9/2011 < 0.13 < 0.13 < 0.15 < 0.3 < 0.13 2/26/1998 < 1.0 < 1.0 < 1.0 < 3.0 < 5 11/20/2000 < 1.0 < 1.0 < 1.0 < 3.0 < 5 2/20/2003 < 0.5 < 0.5 1.1 J < 1.0 < 0.5 3/3/2004 < 0.5 < 0.5 < 0.5 < 1.0 < 0.5 11/5/2008 < 0.5 < 0.7 < 0.8 < 0.8 < 0.5 8/9/2011 < 0.13 < 0.13 < 0.15 < 0.3 < 0.13 9/29/2003 1,520 9,840 2,700 12,900 < 50 3/3/2004 1,160 6,710 1,930 9,020 < 50 11/15/2004 897 5,170 2,010 9,400 < 50 5/17/2007 NS NS NS NS NS 11/5/2008 450 1,200 1,600 7,300 < 10 8/9/2011 102 78 622 2,520 < 2.6 Notes: BOLD indicates exceedances of NC GCL µg/l = micrograms per liter J = estimated value < = not detected at specified detection limit UJ = not detected and detection limit is estimated MW-11 MW-12 MW-10 Page 4 of 4 Arcadis G&M of North Carolina, Inc. 5420 Wade Park Blvd., Suite 350 Raleigh, North Carolina 27607 Tel 919 854 1282 Fax 919 854 5448 www.arcadis.com