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Home My WebLink AboutWS-4579_14873_CA_MRP_20231002Chevron Environmental Management Company Groundwater Monitoring Report – Third Quarter 2023 Former Chevron Facility (Gulf Oil) #205513 600 South Main Street (formerly 500 South Main Street) High Point, North Carolina 27260 Guilford County UST Incident Number 14873 Risk Classification: Intermediate Release Information Date Discovered: October 1995 Estimated Quantity of Release: Unknown Cause of Release: Unknown Source of Release: Five 1,000-gallon gasoline tanks (USTs 4, 5, 6, 7, and 8) and one 650-gallon waste oil tank (UST 9); (Incident # 14874 also associated with this property had documented releases from three 6,000-gallon gasoline tanks (USTs 11, 12, and 13) Site latitude: 35°56’56” N (NAD 27) Site Longitude: 80°00’18” W (NAD 27) Location Method: GPS Surveyed 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. www.arcadis.com https://arcadiso365.sharepoint.com/teams/portfolio-817740/Shared Documents/205513 High Point NC/Deliverables/GWM/2023/07.2023 GW Sampling Report/2023.10.02 Chevron 205513 3Q2023 GWMR.docx Groundwater Monitoring Report – Third Quarter 2023 Former Chevron Facility (Gulf Oil) #205513 October 2, 2023 Prepared By: Prepared For: Arcadis G&M of North Carolina, Inc. (Certification C-1869). North Carolina Department of Environmental 3540 Toringdon Way Quality, Division of Waste Management Suite 220 UST Section Charlotte North Carolina 28277 Phone: 704 752 4258 Fax: 704 752 4258 Our Ref: 30064349 ________________________________________ Sherrie Lang Certified Project Manager _______________________________________ Scott Bostian, P.E. #25659 Principal Chemical Engineer Groundwater Monitoring Report – Third Quarter 2023 www.arcadis.com https://arcadiso365.sharepoint.com/teams/portfolio-817740/Shared Documents/205513 High Point NC/Deliverables/GWM/2023/07.2023 GW Sampling Report/2023.10.02 Chevron 205513 3Q2023 GWMR.docx i Contents Acronyms and Abbreviations ................................................................................................................................ iii Executive Summary........................................................................................................................................... ES-1 1 Site Location and Characterization ............................................................................................................... 1 2 Receptor Information ...................................................................................................................................... 2 3 Geology and Hydrogeology ............................................................................................................................ 3 4 Groundwater Monitoring ................................................................................................................................. 4 4.1 Groundwater Gauging ............................................................................................................................. 4 4.2 Groundwater Sampling ........................................................................................................................... 4 4.3 Groundwater Analytical Results ............................................................................................................ 4 5 Investigative Derived Waste ........................................................................................................................... 6 6 Conclusion and Recommendations .............................................................................................................. 7 7 References ....................................................................................................................................................... 8 8 Statements and Certification .......................................................................................................................... 9 Tables Table 1 UST System Information Table 2 UST Owner/Operator Information Table 3 Groundwater Monitoring Well Construction and Elevation Data Table 4 July 2023 Sampling Analysis Plan Table 5 Groundwater Analytical Results Table 6 MNA Parameter Analytical Results Figures Figure 1 Site Location Map Figure 2 Land Use Map Figure 3 Site Map Figure 4 Groundwater Contour Map July 11, 2023 Figure 5 Groundwater Analytical Map July 11-13, 2023 Figure 6 Benzene Isoconcentration Contour Map Figure 7 1,2-DCA Isoconcentration Contour Map Figure 8 EDB Concentration Map Groundwater Monitoring Report – Third Quarter 2023 www.arcadis.com https://arcadiso365.sharepoint.com/teams/portfolio-817740/Shared Documents/205513 High Point NC/Deliverables/GWM/2023/07.2023 GW Sampling Report/2023.10.02 Chevron 205513 3Q2023 GWMR.docx ii Appendices Regulatory Correspondence Groundwater Sampling Field Logs Laboratory Analytical and Validation Reports Groundwater Monitoring Report – Third Quarter 2023 www.arcadis.com https://arcadiso365.sharepoint.com/teams/portfolio-817740/Shared Documents/205513 High Point NC/Deliverables/GWM/2023/07.2023 GW Sampling Report/2023.10.02 Chevron 205513 3Q2023 GWMR.docx iii Acronyms and Abbreviations µg/L microgram per liter 1,2-DCA 1,2-dichloroethane Arcadis Arcadis U.S., Inc. BBL Blasland, Bouck, and Lee, Inc. bgs below ground surface btoc below top of casing CEMC Chevron Environmental Management Company EDB ethylene dibromide GCL Gross Contaminant Level GEX Geologic Exploration, Inc. Gulf Oil Gulf Oil Company Ilderton Oil Ilderton Oil Company MNA monitored natural attenuation MTBE methyl tertiary butyl ether NCDEQ North Carolina Department of Environmental Quality PSH phase-separated hydrocarbon PWR partially weathered rock USEPA United States Environmental Protection Agency USGS United States Geological Survey US Survey United States Survey UST underground storage tank VOC volatile organic compound Groundwater Monitoring Report – Third Quarter 2023 www.arcadis.com https://arcadiso365.sharepoint.com/teams/portfolio-817740/Shared Documents/205513 High Point NC/Deliverables/GWM/2023/07.2023 GW Sampling Report/2023.10.02 Chevron 205513 3Q2023 GWMR.docx ES-1 Executive Summary On behalf of Chevron Environmental Management Company (CEMC), Arcadis U.S., Inc. (Arcadis) is pleased to submit this Groundwater Monitoring Report – Third Quarter 2023 (report). This report summarizes the groundwater monitoring and sampling completed between July 11 and 13, 2023 at the former Chevron facility (Gulf Oil Company [Gulf Oil] #205513; the site; Incident #14873) located at 600 South Main Street in High Point, North Carolina. It has been established that because Ilderton Oil Company (Ilderton Oil; additional responsible party) had dissolved in 2012, North Carolina Department of Environmental Quality (NCDEQ) Underground Storage Tank (UST) Section, Division of Waste Management, Winston-Salem Regional Office would take over Incident #14874 under the state lead program. It has also been proposed by NCDEQ that CEMC would clean up 1,2-dichloroethane (1,2-DCA) and ethylene dibromide (EDB) concentrations to below the Gross Contamination Levels (GCLs), and once 1,2-DCA and EDB were below the GCLs, NCDEQ would assume the remaining liability at the site. The previous groundwater samples were collected in January 2023 and the results were submitted in the Groundwater Monitoring Report – First Quarter 2023, dated March 31, 2023. NCDEQ issued an Acknowledgement of Report Receipt on April 11, 2023 and requested the next semiannual groundwater monitoring event be completed in the third quarter of 2023 with a report summarizing data submitted by October 2, 2023. Groundwater data and samples collected between July 11 and 13, 2023 indicate methyl tertiary butyl ether (MTBE), 1,2-DCA, and EDB concentrations were above GCLs in one well (MW-8), and benzene concentrations were above GCLs in three wells (MW-2, MW-7, and MW-8). This report was prepared in accordance with the NCDEQ cleanup requirements pursuant to Title 15A North Carolina Administrative Code 2L, Title 15A Department of Environmental Quality 0407(d) Risk-based Assessment and Corrective Action for Petroleum USTs for intermediate risk. Regulatory correspondence is included in Appendix A. Groundwater Monitoring Report – Third Quarter 2023 www.arcadis.com https://arcadiso365.sharepoint.com/teams/portfolio-817740/Shared Documents/205513 High Point NC/Deliverables/GWM/2023/07.2023 GW Sampling Report/2023.10.02 Chevron 205513 3Q2023 GWMR.docx 1 1 Site Location and Characterization The site is located at the southwest corner of Grimes Avenue and South Main Street in High Point, North Carolina, as shown on the United States Geologic Survey (USGS) Topographic Quadrangle for High Point West (Figures 1 and 2). High Point is located in the southwestern portion of Guilford County, North Carolina. The area is urban in character and primarily commercial to the north, east, and south of the site. The area to the west is a combination of commercial and residential properties. The local land use map is included on Figure 2. The site currently operates as a retail oriental rug supplier, consisting of a large showroom and warehouse structure with an asphalt parking lot. A two-door warehouse delivery bay exists on the southeast side of the facility along Taylor Avenue. Additional customer and employee parking is situated along Taylor Avenue on the southeast side of the property. The current site structure encompasses an area much larger than the original retail petroleum station. At the time when the site operated as a petroleum retail station, the legal deed reported the site dimensions as approximately 0.33 acre. The current property is greater than one acre in size and is listed as 600 South Main Steet. The properties contiguous to the west were zoned as residential multi-family, although an area of commercial properties was also shown as located to the west of the site. Beyond the immediate vicinity of the site, most properties in the High Point Main Street area were shown to be zoned as commercial (Arcadis 2022). A site map is included on Figure 3. Based on the information provided in the Phase I Environmental Site Assessment (ENSCI Environmental, Inc. 1995), the site was most likely used for residential purposes prior to 1929. In 1929, Gulf Oil purchased the property, and USTs were installed at some point between 1929 and 1938, when they are evident on aerial photographs of the area. Three 6,000-gallon USTs (ID numbers 1, 2, and 3) used for storage and distribution of gasoline were installed in the UST field located on the northwest portion of the property in 1971. In 1979, Ilderton Oil purchased the property and the existing 6,000-gallon USTs. Ilderton Oil operated USTs 1, 2, and 3 until they were removed and replaced in October 1988 with three new 6,000-gallon USTs (ID numbers 11, 12, and 13). Gulf Oil and its successors never owned or operated USTs 11, 12, and 13. In October 1995, and prior to the sale of the property, Ilderton Oil removed USTs 11, 12, and 13. During these removal activities, seven additional USTs were encountered and removed. Five 1,000-gallon USTs (ID numbers 4, 5, 6, 7, and 8), which appeared to have been used for storage and distribution of gasoline, were encountered in a UST pit located on the northeastern portion of the property. One 650-gallon UST used for the storage of used oil and one 750-gallon UST used for the storage of kerosene were located in a UST pit on the southern portion of the property. The seven additional USTs were owned and operated by Gulf Oil and had previously been abandoned in place. A summary of USTs previously located at the site is included in Table 1, and a summary of UST ownership is included in Table 2. Between June 13 and 14, 2005, representatives of Blasland, Bouck and Lee, Inc. (BBL) and Geologic Exploration, Inc. (GEX) (a North Carolina licensed well driller) installed groundwater monitoring wells MW-1, MW-2, and MW-3 (BBL 2005). Between September 13 and 14, 2005, wells MW-5 and MW-6 were installed at locations expected to be downgradient from the former Gulf Oil gasoline UST area as specified in the UST Section Guidelines, and deep well MW-4D was installed adjacent to monitoring well MW-2 (BBL 2005). Between February 24 and 25, 2014, representatives of Arcadis and GEX installed monitoring wells MW-7, MW-8, and MW-9 (Arcadis 2014). Former site features and historical UST locations can be found in the Pre-Corrective Action Plan Groundwater Assessment Report, dated May 27, 2022 (Arcadis 2022). Groundwater Monitoring Report – Third Quarter 2023 www.arcadis.com https://arcadiso365.sharepoint.com/teams/portfolio-817740/Shared Documents/205513 High Point NC/Deliverables/GWM/2023/07.2023 GW Sampling Report/2023.10.02 Chevron 205513 3Q2023 GWMR.docx 2 2 Receptor Information A sensitive receptor survey was completed in April 2011. Potable water is obtained from a municipal supply in the area of the site. Additionally, no potable water wells were identified within 1,500-feet of the site. The nearest surface water body is an intermittent tributary of the Richland Creek, which has its headwater approximately 2,500 feet to the west of the former UST areas (Arcadis 2022). Groundwater Monitoring Report – Third Quarter 2023 www.arcadis.com https://arcadiso365.sharepoint.com/teams/portfolio-817740/Shared Documents/205513 High Point NC/Deliverables/GWM/2023/07.2023 GW Sampling Report/2023.10.02 Chevron 205513 3Q2023 GWMR.docx 3 3 Geology and Hydrogeology The site is located within the Piedmont Physiographic Province in central North Carolina, which is characterized by gently rolling landscape and broad ridges that lie between the Coastal Plain to the east and the Blue Ridge Mountains to the west. The site is located within the Carolina Slate Belt. Rocks of this area generally consist of metamorphosed igneous intrusive granitic rock ranging in age from 520 to 650 million years old (Brown et al. 1985). The primary rock type in the area is metamorphosed granite with some intrusions of granodiorite and quartz diorite. This rock is best described as white to gray, and fine to coarse grained with massive foliation (Carpenter 1982). Weathering of the rock in this area produces an overlying soil material identified as saprolite which resembles soil but retains some of the structure of the parent bedrock. Saprolite is produced by chemical weathering of the underlying crystalline rock. Saprolite grades with depth to a semi-consolidated material known as partially weathered rock (PWR). Based on data collected during previous monitoring well installations at the site, surficial soil and saprolite are present from the ground surface to approximately 58 below ground surface (bgs) and consists of a clayey to sandy silt. Regionally, groundwater is found in saprolite, PWR, and underlying bedrock. Typically, these units may behave as separate, unconfined, and semi-confined units within the aquifer system. PWR can be included as part of the unconfined unit because it reacts hydraulically with saprolite. The saprolite and PWR typically have the capacity to store large volumes of groundwater and act as a groundwater reservoir due to their high porosity relative to the underlying bedrock unit. Groundwater in the saprolite generally flows horizontally toward surface water features mimicking the local topography. Metavolcanic rocks generally have almost no porosity features such as joints and fractures that contain groundwater. Groundwater flow within bedrock fractures is controlled by the number, size, spacing, orientation, and interconnectedness of the fractures (USGS 1997). Groundwater Monitoring Report – Third Quarter 2023 www.arcadis.com https://arcadiso365.sharepoint.com/teams/portfolio-817740/Shared Documents/205513 High Point NC/Deliverables/GWM/2023/07.2023 GW Sampling Report/2023.10.02 Chevron 205513 3Q2023 GWMR.docx 4 4 Groundwater Monitoring Groundwater sampling at the site was completed as summarized below. 4.1 Groundwater Gauging On July 11, 2023, the nine site monitoring wells were gauged with an oil/water interface probe to measure depth to groundwater and phase separated hydrocarbon (PSH), if present; the gauging log is included in Appendix B. Groundwater gauging data from the July 2023 event, as well as historical gauging data and monitoring well construction and location information, are provided in Table 3. Depths to water in July 2023 ranged from 14.94 feet below top-of-casing (btoc) in monitoring well MW-3 to 29.27 feet btoc in monitoring well MW-6. The corresponding groundwater elevations ranged from 881.79 United States survey (US survey) feet in well MW-8 to 883.23 US survey feet in well MW-6. PSH was not detected in the monitoring wells during the July 2023 gauging activities, consistent with historical data. A groundwater contour map for July 2023 is included on Figure 4 and indicates that, although relatively flat, the horizontal component of shallow groundwater flow was to the south-southwest. 4.2 Groundwater Sampling Upon completion of gauging activities, groundwater samples were collected from the nine site monitoring wells between July 11 and 13, 2023, in accordance with the July 2023 sampling plan (Table 4). Groundwater samples were collected using low-flow sampling methodologies in accordance with current United States Environmental Protection Agency (USEPA) practices (USEPA 2013). Throughout the sampling process at each well, field parameters (temperature, pH, specific conductance, dissolved oxygen, oxidation-reduction potential, and turbidity) were recorded using a calibrated field meter. The field parameters and sampling information were recorded on field sampling logs and are included in Appendix B. The groundwater samples were collected in pre-preserved laboratory-supplied containers and immediately placed in a cooler with wet ice following collection. At the completion of sampling activities, the samples were delivered under appropriate chain-of-custody procedures in properly cooled and sealed containers to Pace Analytical National, a North Carolina-certified laboratory in Mount Juliet, Tennessee. Samples were analyzed for volatile organic compounds (VOCs) by USEPA Method 6200B, EDB by Method 8011, and monitored natural attenuation (MNA) parameters, including total organic carbon (TOC), total iron, ferrous iron, sulfate, and dissolved methane. Due to a lab error, nitrate-nitrogen was not analyzed during this quarter; however, nitrate was analyzed. Quality assurance/quality control samples collected to help evaluate the quality of the chemical analysis a blind duplicate, a matrix spike/matrix spike duplicate, equipment rinsate blank, and a field blank. Analytical data were validated in accordance with USEPA National Functional Guidelines. Validation provided the means to determine the reliability of the chemical analysis, the accuracy, and the precision of information acquired by the laboratory. The laboratory and data validation reports are included in Appendix C. 4.3 Groundwater Analytical Results Groundwater concentrations exceeding the GCLs were detected in samples collected from three of the nine monitoring wells during the July 2023 groundwater sampling event. Select groundwater results for the nine wells Groundwater Monitoring Report – Third Quarter 2023 www.arcadis.com https://arcadiso365.sharepoint.com/teams/portfolio-817740/Shared Documents/205513 High Point NC/Deliverables/GWM/2023/07.2023 GW Sampling Report/2023.10.02 Chevron 205513 3Q2023 GWMR.docx 5 are summarized in Table 5 and shown on Figure 5. Historical analytical results between June 2005 and July 2023 are also summarized in Table 5. Dissolved-phase benzene concentrations exceeded the GCL of 5,000 micrograms per liter (µg/L) in groundwater samples collected from monitoring wells MW-2 (11,500 µg/L), MW-7 (6,420 µg/L), and MW-8 (24,100 µg/L). At monitoring well MW-8, concentrations of 1,2-DCA (985 J µg/L), EDB (203 µg/L), and MTBE (79,700 µg/L) exceeded the GCLs of 400 µg/L, 50 µg/L, and 20,000 µg/L, respectively. Benzene, 1,2-DCA, and EDB isoconcentration maps are provided on Figures 6, 7, and 8, respectively. MNA parameters listed in Section 5.2 of this report were required by NCDEQ UST Section guidance (NCDEQ 2022) and were analyzed during the July 2023 sampling event; the data are summarized in Table 6. Overall, the results indicate groundwater geochemistry is relatively reducing in areas with elevated VOC concentrations (i.e., at monitoring wells MW-2, MW-7, MW-8, and MW-9) compared to other areas of the site. A summary of select MNA results is provided below:  TOC was detected above the reporting limit in eight of the nine wells sampled, with concentrations ranging from 767 µg/L at MW-1 to 208,000 µg/L at MW-8. TOC concentrations were generally higher in wells with elevated VOC concentrations.  Nitrate-nitrogen was detected above the reporting limit in all the nine wells sampled, with concentrations ranging from 55.8 J µg/L at MW-8 to 15,000 J µg/L at MW-5. Concentrations of nitrate-nitrogen were generally lower in wells with elevated VOC concentrations.  Total iron was detected above the reporting limit in all nine wells sampled, with concentrations ranging from 758 J µg/L at MW-3 (field duplicate) to 12,600 µg/L at MW-2. Ferrous (i.e., dissolved) iron was measured at eight of the nine wells sampled, with concentrations ranging from 22.0 J µg/L at MW-5 to 14,400 J µg/L at MW-2. Concentrations of ferrous iron were generally higher in wells with elevated VOC concentrations.  Sulfate was detected above the reporting limit in seven of the nine wells sampled, with concentrations ranging from 1,120 J µg/L at MW-5 to 169,000 µg/L at MW-3. Concentrations of sulfate were generally lower in wells with elevated VOC concentrations.  Dissolved methane was detected above the reporting limit in four of the nine wells sampled, with concentrations ranging from 92.6 µg/L at MW-9 to 249 µg/L at MW-7. Methane was only detected in wells with elevated VOC concentrations. As summarized above, MNA parameters indicate that groundwater geochemistry is generally reducing in wells with elevated VOC concentrations. This includes reduced levels of nitrate and sulfate and increased levels of ferrous iron and methane. Based on the results, samples from the nine wells will be collected during future semiannual groundwater sampling events for the following MNA parameters: TOC, nitrate-nitrogen, total iron, ferrous iron, sulfate, and dissolved methane. Groundwater Monitoring Report – Third Quarter 2023 www.arcadis.com https://arcadiso365.sharepoint.com/teams/portfolio-817740/Shared Documents/205513 High Point NC/Deliverables/GWM/2023/07.2023 GW Sampling Report/2023.10.02 Chevron 205513 3Q2023 GWMR.docx 6 5 Investigative Derived Waste Purge water generated in July 2023 was containerized and appropriately labeled onsite in a 55-gallon stainless steel drum. The waste will be transferred to an appropriate disposal facility pending profile sampling. The waste manifest will be included in the next groundwater report. Groundwater Monitoring Report – Third Quarter 2023 www.arcadis.com https://arcadiso365.sharepoint.com/teams/portfolio-817740/Shared Documents/205513 High Point NC/Deliverables/GWM/2023/07.2023 GW Sampling Report/2023.10.02 Chevron 205513 3Q2023 GWMR.docx 7 6 Conclusion and Recommendations During the July 2023 groundwater monitoring event, nine site monitoring wells were gauged and sampled. The results from the July 2023 groundwater monitoring event indicate that:  Benzene concentrations were detected above the GCL at three monitoring wells (MW-2, MW-7, and MW-8).  MTBE, 1,2-DCA, and EDB concentrations were detected above the GCL at monitoring well MW-8.  MNA parameters indicate geochemical conditions are more reducing at wells with elevated VOC concentrations. Semi-annual groundwater monitoring will continue in 2024 (first and third quarters); the results will be provided in subsequent groundwater monitoring reports. Data gathered during the semi-annual groundwater monitoring events will be used to inform the corrective action plan for the site. A remedial strategy will be proposed once sufficient data can be evaluated. Groundwater Monitoring Report – Third Quarter 2023 www.arcadis.com https://arcadiso365.sharepoint.com/teams/portfolio-817740/Shared Documents/205513 High Point NC/Deliverables/GWM/2023/07.2023 GW Sampling Report/2023.10.02 Chevron 205513 3Q2023 GWMR.docx 8 7 References Arcadis, 2014. Well Installation Report, Former Gulf Oil / Chevron #205513, 500 South Main Street, High Point, Guilford County, North Carolina. March 2014. Arcadis, 2022. Pre-Corrective Action Plan Groundwater Assessment Report, Former Chevron Facility (Gulf Oil) #205513, 600 South Main Street (formerly 500 South Main Street), High Point, North Carolina. May 27. BBL, 2005. Limited Site Assessment Report, Illoco Mart – High Point B, Former Chevron Facility 205512, 500 South Main Street, High Point, Guilford County, North Carolina, Groundwater Incident No. 14873. November. Brown, et al., 1985. Geologic Map of North Carolina: North Carolina Geological Survey, 1:500,000. Carpenter, 1982. Geologic Map of Region G (Alamance, Caswell, Davidson, Guilford, Randolph, and Rockingham counties North Carolina). Regional Geology Series 2. North Carolina Geological Survey. ENSCI Engineering Group, P.A., 1995. UST Closure Report, Iloco Convenience Store/Gas Station, 500 South Main Street, High Point, North Carolina. November. NCDEQ, 2022. UST Guidelines for Monitored Natural Attenuation (MNA). UST Section, North Carolina Department of Environmental Quality, Division of Waste Management. March 30. USEPA, 2013. Groundwater Sampling Operating Procedure. U.S. Environmental Protection Agency, Science and Ecosystem Support Division, Athens, Georgia. March. USGS, 1997. Groundwater Atlas of the United States, Segment 11, Hydrogeologic Investigations Atlas 730-L. United States Geological Survey. Reston, Virginia. Tables Table 1 UST System Information Chevron 600 South Main Street High Point, North Carolina UST ID Number Current/Last Contents Previous Contents Capacity (gallons) Construction Details Tank Dimensions4 Associated Piping and Pumps Description Date Tank Installed Status of UST Release associated with the UST System? 11 Gasoline Gasoline 6,000 Unknown Unknown Unknown 1971 Removed - 1988 Unknown 21 Gasoline Gasoline 6,000 Unknown Unknown Unknown 1971 Removed - 1988 Unknown 31 Gasoline Gasoline 6,000 Unknown Unknown Unknown 1971 Removed - 1988 Unknown 42 Gasoline Gasoline 1,000 Unknown 4' x 10.5'Unknown Unknown Closed - 1979; Removed - 1995 Unknown 52 Gasoline Gasoline 1,000 Unknown 4' x 10.5'Unknown Unknown Closed - 1979; Removed - 1995 Unknown 62 Gasoline Gasoline 1,000 Unknown 4' x 10.5'Unknown Unknown Closed - 1979; Removed - 1995 Unknown 72 Gasoline Gasoline 1,000 Unknown 4' x 10.5'Unknown Unknown Closed - 1979; Removed - 1995 Unknown 82 Gasoline Gasoline 1,000 Unknown 4' x 10.5'Unknown Unknown Closed - 1979; Removed - 1995 Unknown 9 Waste Oil Waste Oil 560 Unknown 3.5' x 7.67'Unknown Unknown Removed - 1995 Unknown 10 Kerosene Kerosene 560 Unknown 3.5' x 7.67'Unknown Unknown Removed - 1995 Unknown 11 Gasoline Gasoline 6,000 Unknown 8' x 16'Unknown 1988 Removed - 1995 Unknown 12 Gasoline Gasoline 6,000 Unknown 8' x 16'Unknown 1988 Removed - 1995 Unknown 13 Gasoline Gasoline 6,000 Unknown 8' x 16'Unknown 1988 Removed - 1995 Unknown Notes: 1 - Operated by Gulf Oil Company & Ilderton Oil Company. 2 - Abandoned in place with sand/cement prior to Ilderton Oil Company's purchase of the property. 3 - Owned and operated solely by Ilderton Oil Company. 4 - UST dimensions obtained from Southern Pump & Tank Company Tank Chart Information. UST = underground storage tank. ' = feet https://arcadiso365.sharepoint.com/teams/portfolio-817740/Shared Documents/205513 High Point NC/Deliverables/GWM/2023/07.2023 GW Sampling Report/1 Tables/Tables 1-6 GMR_V1 1/1 Table 2 UST Owner/Operator Information Chevron 600 South Main Street High Point, North Carolina UST ID Number Name of Owner or Operator Dates of Ownership/Operation Owner or Operator? 11, 12, and 13 Ilderton Oil Company 1995 to 1998 owner/operator UST ID Number Name of Owner or Operator Dates of Ownership/Operation Owner or Operator? 4, 5, 6, 7, 8, 9, and 10 Gulf Oil Company unknown owner UST ID Number Name of Owner or Operator Dates of Ownership/Operation Owner or Operator? 1, 2, and 3 Ilderton Oil Company 1979 to 1988 owner/operator UST ID Number Name of Owner or Operator Dates of Ownership/Operation Owner or Operator? 1, 2, and 3 Gulf Oil Company 1971 to 1979 owner/operator Note: UST = underground storage tank Address:Telephone Number: Ilderton Oil Company was dissolved in 2012. Address:Telephone Number: Address:Telephone Number: (Chevron Environmental Management Company) 1500 Louisiana Street 38154 Houston, Texas, 77002 832.854.5667 (Chevron Environmental Management Company) 1500 Louisiana Street 38154 Houston, Texas 77002 832.854.5667 Address:Telephone Number: Ilderton Oil Company was dissolved in 2012. https://arcadiso365.sharepoint.com/teams/portfolio-817740/Shared Documents/205513 High Point NC/Deliverables/GWM/2023/07.2023 GW Sampling Report/1 Tables/Tables 1-6 GMR_V1 1/1 Table 3 Groundwater Monitoring Well Construction and Elevation Data Chevron 600 South Main Street High Point, North Carolina Well ID Latitude / Longitude Date Installed (mm/dd/year) Well Diameter (inches) Total Depth (feet btoc) Screened Interval (feet btoc) Top of Casing Elevation (feet msl) Gauging Date (mm/dd/yr) Depth to Water (feet btoc) Depth to Product (feet btoc) Free Product Thickness (feet) Corrected Groundwater Elevation (feet msl) 06/14/05 27.85 ND ND 883.07 09/13/05 29.11 ND ND 881.81 09/26/05 29.25 ND ND 881.67 10/11/05 29.30 ND ND 881.62 06/22/10 28.36 ND ND 882.56 02/25/14 29.84 ND ND 881.08 12/14/21 28.48 ND ND 882.44 7/19/2022a -------- 01/23/23 29.64 ND ND 881.28 07/11/23 28.50 ND ND 882.42 06/14/05 27.44 ND ND 882.64 09/13/05 27.92 ND ND 882.16 09/26/05 28.20 ND ND 881.88 10/11/05 28.30 ND ND 881.78 06/22/10 27.37 ND ND 882.71 02/25/14 28.88 ND ND 881.20 12/14/21 27.45 ND ND 882.63 07/19/22 28.12 ND ND 881.96 01/23/23 28.60 ND ND 881.48 07/11/23 27.42 ND ND 882.66 06/14/05 13.90 ND ND 882.89 09/13/05 15.17 ND ND 881.62 09/26/05 15.35 ND ND 881.44 10/11/05 15.40 ND ND 881.39 06/22/10 14.63 ND ND 882.16 02/25/14 16.01 ND ND 880.78 12/14/21 15.09 ND ND 881.70 7/19/2022a -------- 01/23/23 15.80 ND ND 880.99 07/11/23 14.94 ND ND 881.85 See Notes on Page 3. MW-2 802078.392 N 1702745.238 E MW-3 802079.517 N 1702402.193 E 6/13/2005 2 37.00 22-37 10-256/14/2005 2 896.79 910.08 22-37 910.92 25.00 MW-1 801926.639 N 1702730.838 S 6/13/2005 2 37.75 https://arcadiso365.sharepoint.com/teams/portfolio-817740/Shared Documents/205513 High Point NC/Deliverables/GWM/2023/07.2023 GW Sampling Report/1 Tables/Tables 1-6 GMR_V1 1/3 Table 3 Groundwater Monitoring Well Construction and Elevation Data Chevron 600 South Main Street High Point, North Carolina Well ID Latitude / Longitude Date Installed (mm/dd/year) Well Diameter (inches) Total Depth (feet btoc) Screened Interval (feet btoc) Top of Casing Elevation (feet msl) Gauging Date (mm/dd/yr) Depth to Water (feet btoc) Depth to Product (feet btoc) Free Product Thickness (feet) Corrected Groundwater Elevation (feet msl) 09/13/05 26.30 ND ND 884.27 09/26/05 28.80 ND ND 881.77 10/11/05 28.89 ND ND 881.68 06/22/10 27.97 ND ND 882.60 02/25/14 29.47 ND ND 881.10 12/14/21 28.06 ND ND 882.51 07/20/22 28.76 ND ND 881.81 01/23/23 29.20 ND ND 881.37 07/11/23 28.05 ND ND 882.52 09/13/05 26.94 ND ND 882.24 09/26/05 27.12 ND ND 882.06 10/11/05 27.22 ND ND 881.96 06/22/10 26.32 ND ND 882.86 02/25/14 27.80 ND ND 881.38 12/14/21 26.53 ND ND 882.65 7/19/2022a -------- 01/23/23 27.56 ND ND 881.62 07/11/23 26.46 ND ND 882.72 09/13/05 29.96 ND ND 882.54 09/26/05 29.60 ND ND 882.90 10/11/05 30.18 ND ND 882.32 06/22/10 29.31 ND ND 883.19 02/25/14 30.83 ND ND 881.67 12/14/21 29.16 ND ND 883.34 07/20/22 29.90 ND ND 882.60 01/23/23 30.47 ND ND 882.03 07/11/23 29.27 ND ND 883.23 02/25/14 29.76 ND ND 880.49 12/14/21 28.33 ND ND 881.92 07/19/22 29.02 ND ND 881.23 01/23/23 29.51 ND ND 880.74 07/11/23 28.32 ND ND 881.93 See Notes on Page 3. MW-6 802198.116 N 1702897.303 E MW-4D 802074.968 N 1702747.309 E MW-5 802152.810 N 1702634.365 E 9/13/2005 37.00 910.25 910.57 58.00 912.509/14/2005 2 25-40 6 9/13/2005 2 57.00 53-58 MW-7 802054.562 N 1702760.910 E 2/24/2014 2 22-37 40.00 25-40 909.18 40.00 37.28 40.00 https://arcadiso365.sharepoint.com/teams/portfolio-817740/Shared Documents/205513 High Point NC/Deliverables/GWM/2023/07.2023 GW Sampling Report/1 Tables/Tables 1-6 GMR_V1 2/3 Table 3 Groundwater Monitoring Well Construction and Elevation Data Chevron 600 South Main Street High Point, North Carolina Well ID Latitude / Longitude Date Installed (mm/dd/year) Well Diameter (inches) Total Depth (feet btoc) Screened Interval (feet btoc) Top of Casing Elevation (feet msl) Gauging Date (mm/dd/yr) Depth to Water (feet btoc) Depth to Product (feet btoc) Free Product Thickness (feet) Corrected Groundwater Elevation (feet msl) 02/25/14 29.39 ND ND 880.38 12/14/21 27.98 ND ND 881.79 07/20/22 28.65 ND ND 881.12 01/23/23 29.12 ND ND 880.65 07/11/23 27.98 ND ND 881.79 02/25/14 29.43 ND ND 880.41 12/14/21 28.04 ND ND 881.80 07/20/22 28.72 ND ND 881.12 01/23/23 29.17 ND ND 880.67 07/11/23 28.00 ND ND 881.84 Notes: a = Groundwater gauging data collected from wells MW-1, MW-3, and MW-5 in July 2022 were inadvertently lost because of damaged equipment. btoc = below top of well casing mm/dd/year = month/day/year msl = mean sea level ND = not detected 22-37 909.84 37.00 909.77 37.00 MW-9 802063.491 N 1702710.205 E 2/24/2014 2 37.40 2/24/2014 2 22-37 37.10 MW-8 802045.978 N 1702724.309 E https://arcadiso365.sharepoint.com/teams/portfolio-817740/Shared Documents/205513 High Point NC/Deliverables/GWM/2023/07.2023 GW Sampling Report/1 Tables/Tables 1-6 GMR_V1 3/3 Table 4 January 2023 Sampling Analysis Plan Chevron 600 South Main Street High Point, North Carolina Well ID Date Installed (mm/dd/year) Total Depth (feet btoc) Screened Interval (feet btoc) EPA Method 6200B Field/MNA Parameters1, 2 MW-1 6/13/2005 37.00 22-37 X X MW-2 6/13/2005 37.00 22-37 X X MW-3 6/14/2005 25.00 10-25 X X MW-4D 9/13/2005 58.00 53-58 X X MW-5 9/13/2005 40.00 25-40 X X MW-6 9/14/2005 40.00 25-40 X X MW-7 2/24/2014 37.00 22-37 X X MW-8 2/24/2014 37.00 22-37 X X MW-9 2/24/2014 37.00 22-37 X X Notes: 1 Field parameters = pH, specific conductance (mS/cm), temperature, DO, ORP, and turbidity. 2 Monitored Natural Attenuation (MNA) parameters = (TOC) total organic carbon, nitrate-nitrogen, total iron, ferrous iron, sulfate, and dissolved methane. btoc = below top of well casing. DO = dissolved oxygen. EPA = environmental protection agency. mm/dd/year = month/day/year. mS/cm = millisiemens per centimeter. NA = not applicable. ND = not detected. ORP = oxidation reduction potential. TOC/BOD/COD = total organic carbon/biochemical oxygen demand/chemical oxygen demand https://arcadiso365.sharepoint.com/teams/portfolio-817740/Shared Documents/205513 High Point NC/Deliverables/GWM/2023/07.2023 GW Sampling Report/1 Tables/Tables 1-6 GMR_V1 1/1 Table 5 Groundwater Analytical Results Chevron 600 South Main Street High Point, North Carolina 5,000 260,000 84,500 85,500 25,000 6,000 30,000 20,000 28,500 25,000 70,000 400 600 50 06/14/05 1.3 3.0 NA NA NA < 1.0 NA NA < 1.0 < 1.00 < 1.00 NA 06/22/10 2.3 < 0.70 < 0.50 < 1.6 NA NA NA < 0.74 NA NA < 0.50 < 0.50 < 0.50 NA 02/25/14 < 5.0 < 1.0 < 1.0 < 5.0 NA NA NA < 1.0 NA NA < 1.0 < 1.0 < 1.0 < 0.019 12/15/21 < 1.0 < 1.0 < 1.0 < 2.0 < 1.0 < 5.0 < 1.0 U 0.645 J < 1.0 < 1.0 < 1.0 0.238 J < 1.0 < 1.0 07/18/22 < 1.00 < 1.00 < 1.00 < 3.00 < 1.00 < 5.00 < 1.00 0.904 J < 1.00 < 1.00 0.105 J 0.159 J < 1.00 < 1.00* DUP 07/18/22 < 1.00 < 1.00 < 1.00 < 3.00 < 1.00 < 5.00 < 1.00 0.875 J < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00* 01/24/23 15.7 8.04 3.26 16.4 0.114 J < 5.00 0.236 J 2.49 1.59 0.407 J <1.00 < 1.00 < 1.00 0.130 J 07/13/23 0.0989 J < 1.00 < 1.00 < 3.00 < 1.00 < 5.00 < 1.00 0.532 J < 1.00 < 1.00 < 1.00 0.159 J < 1.00 < 0.0206 06/14/05 9,840 2,540 2,500 NA NA NA 475 NA NA 90.0 414 4.70 NA 06/22/10 12,000 770 1,400 2,000 NA NA NA 3,200 NA NA 59 520 < 50 NA 02/25/14 16,000 550 3,100 2,800 120 800 270 6,100 860 200 < 100 250 < 100 1.4 12/14/21 11,700 D 475 J 2,730 3,285 104 J 665 235 J 5,620 1,400 336 J 52.5 J 121 J < 50 UJ < 50 UJ 07/19/22 9,280 204 1,560 1,217 J 50.6 J 313 J 149 J 6,510 735 186 J 38.5 J 147 J < 200 < 200 01/25/23 12,000 [11,600]291 [270]2,650 [2,620]1,896 J [1,777.7 J] 84.1 J [85.8 J] 499 J [543]219 [216]5,800 [5,710]927 [949]230 [231] 44.8 J [42.1 J]< 200 [<100]< 200 [<100]< 200 [<100] 07/12/23 11,500 339 2,890 2,520 100 J 638 J 229 5,050 1,110 281 46.3 J 142 J < 200 1.41 J 06/14/05 < 1.0 < 1.0 < 1.0 < 3.0 NA NA NA < 1.0 NA NA < 1.0 < 1.00 < 1.00 NA 06/22/10 < 0.30 < 0.70 < 0.50 < 1.6 NA NA NA < 0.74 NA NA < 0.50 < 0.50 < 0.50 NA 02/25/14 < 1.0 < 1.0 < 1.0 < 5.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 0.020 12/15/21 < 1.0 < 1.0 < 1.0 < 2.0 < 1.0 < 5.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 07/18/22 < 1.00 < 1.00 < 1.00 < 3.00 < 1.00 < 5.00 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 <1.00 <1.00* 01/26/23 0.609 J < 1.00 0.244 J 0.174 J < 1.00 < 5.00 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00* 07/11/23 < 1.00 [<1.00]< 1.00 [<1.00]< 1.00 [<1.00]< 3.00 [<3.00]< 1.00 [<1.00]< 5.00 [<5.00]< 1.00 [<1.00]< 1.00 [<1.00]< 1.00 [<1.00]< 1.00 [<1.00]< 1.00 [<1.00]< 1.00 [<1.00]< 1.00 [<1.00] < 0.0204 UJ [<0.0208 UJ] 10/11/05 < 1.00 < 1.00 < 1.00 < 2.00 NA NA NA < 1.00 NA NA < 1.00 6.03 < 1.00 NA 06/22/10 < 0.30 < 0.70 < 0.50 < 1.6 NA NA NA < 0.74 NA NA < 0.50 2.8 < 0.50 NA 02/25/14 1.1 < 1.0 < 1.0 < 5.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 0.019 12/14/21 0.367 J < 1.0 < 1.0 < 2.0 < 1.0 < 5.0 < 1.0 6.04 < 1.0 < 1.0 0.804 J 0.584 J < 1.0 < 1.0 07/20/22 < 1.00 < 1.00 < 1.00 < 3.00 < 1.00 < 5.00 < 1.00 12.6 < 1.00 < 1.00 1.64 1.19 <1.00 <1.00* 01/26/23 2.82 < 1.00 0.874 J 1.159 J < 1.00 < 5.00 < 1.00 7.21 0.322 J < 1.00 0.523 J < 1.00 < 1.00 < 1.00* 07/13/23 0.423 J 0.528 J 0.163 J < 3.00 < 1.00 < 5.00 < 1.00 6.08 < 1.00 < 1.00 0.682 J 0.473 J < 1.00 < 0.0200 10/11/05 < 1.00 < 1.00 < 1.00 < 2.00 NA NA NA < 1.00 NA NA < 1.00 < 1.00 < 1.00 NA 06/22/10 < 0.30 < 0.70 < 0.50 < 1.6 NA NA NA < 0.74 NA NA < 0.50 < 0.50 < 0.50 NA 02/25/14 < 1.0 < 1.0 < 1.0 < 5.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 0.019 12/15/21 < 1.0 < 1.0 < 1.0 < 2.0 < 1.0 < 5.0 < 1.0 0.149 J < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 07/19/22 < 1.00 < 1.00 < 1.00 < 3.00 < 1.00 < 5.00 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 <1.00 <1.00* 01/27/23 3.14 0.549 J 2.80 3.291 J 0.150 J < 5.00 0.335 J 0.131 J 0.889 J 0.308 J < 1.00 < 1.00 < 1.00 < 1.00* 07/11/23 < 1.00 < 1.00 < 1.00 < 3.00 < 1.00 < 5.00 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 < 0.0214 UJ 10/11/05 < 1.00 < 1.00 < 1.00 < 2.00 NA NA NA < 1.00 NA NA < 1.0 < 1.00 < 1.00 NA 06/23/10 < 0.30 < 0.70 < 0.50 < 1.6 NA NA NA < 0.74 NA NA < 0.50 < 0.50 < 0.50 NA 02/25/14 < 1.0 < 1.0 < 1.0 < 5.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 <1.0 < 0.019 12/15/21 < 1.0 < 1.0 < 1.0 < 2.0 < 1.0 < 5.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 07/20/22 < 1.00 < 1.00 < 1.00 < 3.00 < 1.00 < 5.00 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 <1.00 <1.00* See Notes on Page 2. Benzene Toluene Ethylbenzene Total Xylenes 1,2,4-Trimethylbenzene 1,3,5-Trimethylbenzene 1,2-Dichloroethane 1,2-Dichloropropane Ethylene dibromide (EDB) Volatile Organic Compounds (VOCs) by EPA 625 & SM 6200B Well Date Collected (mm/dd/year) MW-1 Isopropyl ether Isopropylbenzene Naphthalene n-Propylbenzene Methyl tert-butyl ether Ethylene dibromide by Method 8011 MW-3 GCL (µg/L) MW-2 MW-4D MW-5 MW-6 https://arcadiso365.sharepoint.com/teams/portfolio-817740/Shared Documents/205513 High Point NC/Deliverables/GWM/2023/07.2023 GW Sampling Report/1 Tables/Tables 1-6 GMR_V1 1/2 Table 5 Groundwater Analytical Results Chevron 600 South Main Street High Point, North Carolina 5,000 260,000 84,500 85,500 25,000 6,000 30,000 20,000 28,500 25,000 70,000 400 600 50 Benzene Toluene Ethylbenzene Total Xylenes 1,2,4-Trimethylbenzene 1,3,5-Trimethylbenzene 1,2-Dichloroethane 1,2-Dichloropropane Ethylene dibromide (EDB) Volatile Organic Compounds (VOCs) by EPA 625 & SM 6200B Well Date Collected (mm/dd/year) Isopropyl ether Isopropylbenzene Naphthalene n-Propylbenzene Methyl tert-butyl ether Ethylene dibromide by Method 8011 GCL (µg/L) 01/27/23 6.90 0.470 J 3.52 2.529 J 0.155 J < 5.00 0.374 J 0.255 J 0.635 J 0.232 J < 1.00 < 1.00 < 1.00 <1.00* 07/12/23 < 1.00 < 1.00 < 1.00 < 3.00 < 1.00 < 5.00 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 < 0.0200 UJ 02/25/14 9,400 77 820 < 250 82 420 73 2,500 < 50 < 50 52 < 50 < 50 0.84 12/14/21 7,980 D 198 D 2160 D 2,800 D 95.4 636 D 180 D 3,960 D 1090 D 328 D 44.2 93.4 < 1 11.4 07/19/22 5,930 53.8 1,300 823 56.1 302 130 3,310 427 161 32.4 J 120 <50.0 <50.0 07/19/22 5,930 53.8 1,300 823 56.1 302 130 3,310 427 161 32.4 J 120 <50.0 <50.0 01/26/23 7,500 94.2 J 2,230 1,242 79.3 J 235 J 167 3,160 407 177 31.6 J 102 < 100 < 100 07/12/23 6,420 85.5 2,010 1,360 82.2 454 163 2,470 582 199 29.6 J 91.8 < 50.0 0.288 J 02/26/14 22,000 3,200 2,400 8,100 NA NA NA 36,000 NA NA NA 2,000 < 200 210 12/16/21 2,730 D 96.9 D 974 D 476.6 D 62.6 185 D 126 D 7,400 D 200 D 73.2 12.5 18 < 1 < 1.0* 07/20/22 23,800 12,100 J 1,820 9,120 71.4 342 199 <25.0 1,310 335 315 1,240 <25.0 222 01/24/23 19,700 3,960 1,930 J 9,110 < 2,500 < 12,500 < 2,500 75,800 1,130 J 284 J < 2,500 < 2,500 < 2,500 < 2,500 07/13/23 24,100 20,300 2,350 11,600 < 1,000 < 5,000 184 J 79,700 1,320 278 J 276 J 985 J < 1,000 203 02/26/14 9,800 3,800 3,400 9,300 NA NA NA 9,000 NA NA NA 330 < 50 8.7 12/15/21 19,700 15,400 2,100 7,280 90 J 432 J 187 J 88,200 D 1,260 311 242 J 742 < 250 193 J 07/20/22 4,250 <1,000 1,000 J <3,000 <1,000 1,240 J <1,000 6,950 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 01/27/23 8,240 86.4 J 2,960 561 J 142 J 251 J 370 11,300 417 140 J < 200 47.7 J < 200 < 200 07/13/23 2,370 < 200 542 < 600 28.9 J < 1,000 61.9 J 3,970 < 200 < 200 < 200 24.3 J < 200 0.0216 Notes: Results reported in micrograms per liter (µg/L). Bold analytical values indicate concentration exceeds the applicable GCL. D = Concentration is based on a diluted sample analysis. DNE = Does not exist. DUP = Duplicate Sample Result GCL = Gross Contamination Levels for Groundwater. J = The compound was positively identified; however, the associated numerical value is an estimated concentration only. mm/dd/yr = month/day/year. NA = Not analyzed / not available. UJ = The compound was not detected above the reported sample quantitation limit. However, thereported limit is approximate and may or may not represent the actual limit of quantitation. < = Not detected at or above indicated laboratory reporting limit [ ] = Brackets indicate duplicate sample * = EDB non detect by Method 6200 MW-7 MW-6 (cont.) MW-9 MW-8 https://arcadiso365.sharepoint.com/teams/portfolio-817740/Shared Documents/205513 High Point NC/Deliverables/GWM/2023/07.2023 GW Sampling Report/1 Tables/Tables 1-6 GMR_V1 2/2 Table 6 MNA Parameter Analytical Results Chevron 600 South Main Street High Point, North Carolina 07/13/23 NA NA NA NA NA 35.0 J NA NA NA NA NA 2,460 J NA 1,880 J 767 1,580 NA <10.0 07/12/23 NA NA NA NA NA 14,400 J NA NA NA NA NA 5,460 J NA <5,000 39,700 12,600 NA 246 07/11/23 NA NA NA NA NA 43.0 J [49.0 J]NA NA NA NA NA 5,200 J [5,340 J]NA 169,000 [167,000] 1,580 [2,120] 1,220 J [758 J]NA <10.0 [<10.0] 07/13/23 NA NA NA NA NA 88.0 J NA NA NA NA NA 3,070 NA 10,600 873 10,700 NA <10.0 07/11/23 NA NA NA NA NA 22.0 J NA NA NA NA NA 15,000 J NA 1,120 J 952 3,110 NA <10.0 07/12/23 NA NA NA NA NA R NA NA NA NA NA 923 J NA 15,400 <1,000 UB 2,300 NA <10.0 07/12/23 NA NA NA NA NA 9,920 J NA NA NA NA NA 56.2 J NA <5,000 11,400 8,910 NA 249 07/13/23 NA NA NA NA NA 6,700 J NA NA NA NA NA 55.8 J NA 1,260 J 208,000 3,370 NA 173 07/13/23 NA NA NA NA NA 8,260 J NA NA NA NA NA 3,760 NA 2,880 J 18,500 7,410 NA 92.6 Notes: Results reported in micrograms per liter (µg/L). Bold analytical values indicate concentration exceeds the applicable GCL. B = The compound has been found in the sample as well as its associated blank, its presence in the sample may be suspect. D = Concentration is based on a diluted sample analysis. GCL = Gross Contamination Levels for Groundwater. J = The compound was positively identified; however, the associated numerical value is an estimated concentration only. mm/dd/yr = month/day/year. NA = Not analyzed / not available. R = The sample results are rejected. The associated value is unusable due to significant quality control problems. The analysis provides no information as to whether the compound is present or not. UB = Compound considered non-detect at the listed value due to associated blank contamination. UJ = The compound was not detected above the reported sample quantitation limit. However, thereported limit is approximate and may or may not represent the actual limit of quantitation. [ ] = Brackets indicate duplicate sample < = Not detected at or above indicated laboratory reporting limit Ammonia Nitrogen Ferrous Iron Manganese Wet Chemistry by Method 4500S2 D-2011 Wet Chemistry by Method 5210 B-2016 Wet Chemistry by Method 3500Fe B-2011 Wet Chemistry by Method 9056A Wet Chemistry by Method 351.2 MethaneSulfateTOCIron Wet Chemistry by Method 353.2 Metals by EPA 6010 D Wet Chemistry by Method 410.4 Wet Chemistry by Method 9060A Volatile Organic Compounds by Method RSK175 Well Ferric Iron Organic Nitrogen NitriteNitrogen Nitrate- Nitrite Chemical Oxygen Demand (COD) Sulfide Biochemical Oxygen Demand (BOD)Nitrate Date Collected (mm/dd/yr) Calculated Results Wet Chemistry by Method 2320 B-2011/4500CO2 D-2011 Wet Chemistry by Method 350.1 Alkalinity Free Carbon Dioxide MW-7 MW-8 MW-9 MW-1 MW-3 MW-4D MW-5 MW-6 MW-2 https://arcadiso365.sharepoint.com/teams/portfolio-817740/Shared Documents/205513 High Point NC/Deliverables/GWM/2023/07.2023 GW Sampling Report/1 Tables/Tables 1-6 GMR_V1 1/1 Figures NORTH CAROLINA SITE LOCATION MAP 1C:\ U s e r s \ a r i 0 0 0 7 1 \ A C C D o c s \ A r c a d i s \ A U S - C H E V R O N - 2 0 5 5 1 3 - H I G H P O I N T N o r t h C a r o l i n a \ P r o j e c t F i l e s \ 2 0 2 3 \ 0 1 - I n P r o g r e s s \ 0 1 - D W G \ G E N - 2 0 2 3 - F 0 1 - S L M . d w g L A Y O U T : 1 S A V E D : 8/ 1 7 / 2 0 2 3 7 : 3 0 P M A C A D V E R : 24 . 1 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 : AR C A D I S . C T B P L O T T E D : 8/ 1 7 / 2 0 2 3 7: 3 1 P M B Y : R, A N I T A HIGH POINT SITE LOCATION REFERENCE: BASE MAP USGS 7.5. MIN. TOPO. QUAD., HIGH POINT EAST AND HIGH POINT WEST, NORTH CAROLINA, 2019. Approximate Scale: 1 in. = 2000 ft. 0 2000'4000' FIGURE CHEVRON FACILITY #205513 600 SOUTH MAIN STREET HIGH POINT, NORTH CAROLINA SCHOOL DAYCARE PARK/ RECREATION CENTER 1,5 0 0 F T SITE SO U T H M A I N S T . TAYLOR AVE. S. E L M S T . LAND USE MAP IM A G E S : 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 : --- - IMAGE: BING MAPS C:\ U s e r s \ a r i 0 0 0 7 1 \ A C C D o c s \ A r c a d i s \ A U S - C H E V R O N - 2 0 5 5 1 3 - H I G H P O I N T N o r t h C a r o l i n a \ P r o j e c t F i l e s \ 2 0 2 3 \ 0 1 - I n P r o g r e s s \ 0 1 - D W G \ G E N - F 0 2 - L A N D U S E . d w g L A Y O U T : 2 S A V E D : 8/ 1 7 / 2 0 2 3 7 : 2 5 P M A C A D V E R : 24 . 1 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 : 8/1 7 / 2 0 2 3 7: 3 2 P M B Y : R, A N I T A CHEVRON FACILITY #205513 600 SOUTH MAIN STREET HIGH POINT, NORTH CAROLINA 2 FIGURE 0 GRAPHIC SCALE 500'1000' ZAKI ORIENTAL RUGS W. GRIME S A V E N U E 60' R/W BRICK BUILDING S. E L M S T R E E T 68 ' R / W TAYLOR AV E N U E VARIABLE WI D T H R / W S. M A I N S T R E E T 10 0 ' R / W MW-3 MW-5 MW-6 MW-1 MW-8 MW-9 MW-2 MW-7 MW-4D 470 S MAIN STREET 465 S MAIN STREET IM A G E S : A r c a d i s l o g o . p n g G E N - X - I M A G E 1 . j p g XR E F S : PR O J E C T N A M E : -- - - SOURCE: Base map digitized from 'WELL LOCATION SURVEY' provided by 'Taylor Wiseman & Taylor', 4101-F Stuart Andrew Blvd., Charlotte, NC. (704) 527-2535, map date June 30, 2005, map scale 1"=50'. Wells surveyed by Taylor Wiseman & Taylor 11/23/2021. Aerial image from Google Earth Pro.C:\ U s e r s \ a r i 0 0 0 7 1 \ A C C D o c s \ A r c a d i s \ A U S - C H E V R O N - 2 0 5 5 1 3 - H I G H P O I N T N o r t h C a r o l i n a \ P r o j e c t F i l e s \ 2 0 2 3 \ 0 1 - I n P r o g r e s s \ 0 1 - D W G \ G W M - 2 0 2 3 - F 0 2 - S I T E P L A N . d w g L A Y O U T : 3 S A V E D : 8/ 1 7 / 2 0 2 3 7 : 2 6 P M A C A D V E R : 24 . 1 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 : 8/1 7 / 2 0 2 3 7 : 3 6 P M B Y : R, A N I T A CHEVRON FACILITY #205513 600 SOUTH MAIN STREETHIGH POINT, NORTH CAROLINA 3 0 GRAPHIC SCALE 100'200' PROPERTY LINE SHALLOW MONITORING WELL DEEP MONITORING WELL LEGEND SITE MAP FIGURE ZAKI ORIENTAL RUGS W. GRIME S A V E N U E 60' R/W BRICK BUILDING S. E L M S T R E E T 68 ' R / W TAYLOR AV E N U E VARIABLE WI D T H R / W S. M A I N S T R E E T 10 0 ' R / W MW-3 (881.85) MW-5 (882.72) MW-6(883.23) MW-1(882.42)* MW-8(881.79) MW-9 (881.84) MW-2(882.66) MW-7 (881.93) MW-4D (882.52)* 883.00 883 . 0 0 882.0 0 882.50 882.00 882 . 5 0 IM A G E S : A r c a d i s l o g o . p n g G E N - X - I M A G E 1 . j p g XR E F S : PR O J E C T N A M E : -- - - SOURCE: Base map digitized from 'WELL LOCATION SURVEY' provided by 'Taylor Wiseman & Taylor', 4101-F Stuart Andrew Blvd., Charlotte, NC. (704) 527-2535, map date June 30, 2005, map scale 1"=50'. Wells surveyed by Taylor Wiseman & Taylor 11/23/2021. Aerial image from Google Earth Pro.C:\ U s e r s \ a r i 0 0 0 7 1 \ A C C D o c s \ A r c a d i s \ A U S - C H E V R O N - 2 0 5 5 1 3 - H I G H P O I N T N o r t h C a r o l i n a \ P r o j e c t F i l e s \ 2 0 2 3 \ 0 1 - I n P r o g r e s s \ 0 1 - D W G \ G W M - 2 0 2 3 Q 2 - F 0 4 - G W E . d w g L A Y O U T : 4 S A V E D : 9/ 1 2 / 2 0 2 3 1 1 : 0 6 A M A C A D V E R : 24 . 1 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 : 9/1 2 / 2 0 2 3 1 1 : 0 6 A M B Y : R, A N I T A CHEVRON FACILITY #205513 600 SOUTH MAIN STREETHIGH POINT, NORTH CAROLINA 4 FIGURE 0 GRAPHIC SCALE 100'200' PROPERTY LINE SHALLOW MONITORING WELL DEEP MONITORING WELL GROUNDWATER ELEVATION (FEET) POTENTIOMETRIC SURFACE CONTOUR (FEET) GROUNDWATER FLOW DIRECTION WELL NOT USED FOR CONTOURING LEGEND GROUNDWATER CONTOUR MAP JULY 11, 2023 (883.23) 883.00 * ZAKI ORIENTAL RUGS W. GRIME S A V E N U E 60' R/W BRICK BUILDING S. E L M S T R E E T 68 ' R / W TAYLOR AV E N U E VARIABLE WI D T H R / W S. M A I N S T R E E T 10 0 ' R / W MW-3 MW-5 MW-6 MW-1 MW-8 MW-9 MW-2 MW-7 MW-4D IM A G E S : A r c a d i s l o g o . p n g G E N - X - I M A G E 1 . j p g XR E F S : PR O J E C T N A M E : -- - - SOURCE: Base map digitized from 'WELL LOCATION SURVEY' provided by 'Taylor Wiseman & Taylor', 4101-F Stuart Andrew Blvd., Charlotte, NC. (704) 527-2535, map date June 30, 2005, map scale 1"=50'. Wells surveyed by Taylor Wiseman & Taylor 11/23/2021. Aerial image from Google Earth Pro.C:\ U s e r s \ a r i 0 0 0 7 1 \ A C C D o c s \ A r c a d i s \ A U S - C H E V R O N - 2 0 5 5 1 3 - H I G H P O I N T N o r t h C a r o l i n a \ P r o j e c t F i l e s \ 2 0 2 3 \ 0 1 - I n P r o g r e s s \ 0 1 - D W G \ G W M - 2 0 2 3 Q 2 - F 0 5 - G W A . d w g L A Y O U T : 5 S A V E D : 8/ 2 8 / 2 0 2 3 1 0 : 5 9 P M A C A D V E R : 24 . 1 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 : 8/2 9 / 2 0 2 3 9 : 5 7 A M B Y : R, A N I T A CHEVRON FACILITY #205513 600 SOUTH MAIN STREETHIGH POINT, NORTH CAROLINA 5 FIGURE 0 GRAPHIC SCALE 100'200' PROPERTY LINE SHALLOW MONITORING WELL DEEP MONITORING WELL GROSS CONTAMINATION LEVELS FOR GROUNDWATER. THE COMPOUND WAS POSITIVELY IDENTIFIED; HOWEVER, THE ASSOCIATED NUMERICAL VALUE IS AN ESTIMATED CONCENTRATION ONLY THE COMPOUND WAS NOT DETECTED ABOVE THEREPORTED SAMPLE QUANTITATION LIMIT. HOWEVER, THE REPORTED LIMIT IS APPROXIMATE AND MAY OR MAY NOT REPRESENT THE ACTUAL LIMIT OF QUANTITATION BOLD VALUES INDICATE CONCENTRATION EXCEEDS THE APPLICABLE GCL. DUPLICATE SAMPLE RESULT METHYL TERT-BUTYL ETHER NOT DETECTED AT OR ABOVE THE REPORTED DETECTION LIMIT (RDL) LEGEND GROUNDWATER ANALYTICAL MAP JULY 11 - 13, 2023 GCLs MW-1 Date 7/13/2023 Benzene 0.0989 J Toluene <1.00 Ethylbenzene <1.00 Xylenes (Total) <3.00 MTBE 0.532 J 1,2-DCA 0.159 J EDB <0.0206 MW-2 Date 7/12/2023 Benzene 11,500 Toluene 339 Ethylbenzene 2,890 Xylenes (Total) 2,520 MTBE 5,050 1,2-DCA 142 J EDB 1.41 J MW-3 Date 7/11/2023 Benzene <1.00 [<1.00] Toluene <1.00 [<1.00] Ethylbenzene <1.00 [<1.00] Xylenes (Total) <3.00 [<3.00] MTBE <1.00 [<1.00] 1,2-DCA <1.00 [<1.00] EDB < 0.0204 UJ [<0.0208 UJ] MW-4D Date 7/13/2023 Benzene 0.423 J Toluene 0.528 J Ethylbenzene 0.163 J Xylenes (Total) <3.00 MTBE 6.08 1,2-DCA 0.473 J EDB <0.0200 MW-5 Date 7/11/2023 Benzene <1.00 Toluene <1.00 Ethylbenzene <1.00 Xylenes (Total) <3.00 MTBE <1.00 1,2-DCA <1.00 EDB <0.0214 UJ MW-6 Date 7/12/2023 Benzene <1.00 Toluene <1.00 Ethylbenzene <1.00 Xylenes (Total) <3.00 MTBE <1.00 1,2-DCA <1.00 EDB <0.0200 UJ MW-7 Date 7/12/2023 Benzene 6,420 Toluene 85.5 Ethylbenzene 2,010 Xylenes (Total) 1,360 MTBE 2,470 1,2-DCA 91.8 EDB 0.288 J MW-8 Date 7/13/2023 Benzene 24,100 Toluene 20,300 Ethylbenzene 2,350 Xylenes (Total) 11,600 MTBE 79,700 1,2-DCA 985 J EDB 203 J BOLD [ ] MTBE NOTE: 1.RESULTS REPORTED IN MICROGRAMS PER LITER (µg/L). MW-9 Date 7/13/2023 Benzene 2,370 Toluene <200 Ethylbenzene 542 Xylenes (Total) <600 MTBE 3,970 1,2-DCA 24.3 J EDB 0.0216 EDB 1,2-DCA Analytes GCL (ug/l) Benzene 5,000 Toluene 260,000 Ethylbenzene 84,500 Xylenes (Total)85,500 MTBE 20,000 1,2-DCA 400 EDB 50 <1.00 1,2-DICHLOROETHANE ETHYLENE DIBROMIDE UJ ZAKI ORIENTAL RUGS W. GRIME S A V E N U E 60' R/W BRICK BUILDING S. E L M S T R E E T 68 ' R / W TAYLOR AV E N U E VARIABLE WI D T H R / W S. M A I N S T R E E T 10 0 ' R / W MW-3 <1.00 [<1.00] MW-5<1.00 MW-6<1.00 MW-1 0.0989 J 5,00 0 500 MW-2 11,500 MW-8 24,100 MW-76,420 MW-9 2,370 MW-4D 0.423 J* 10, 0 0 0 IM A G E S : A r c a d i s l o g o . p n g G E N - X - I M A G E 1 . j p g XR E F S : PR O J E C T N A M E : -- - - C:\ U s e r s \ a r i 0 0 0 7 1 \ A C C D o c s \ A r c a d i s \ A U S - C H E V R O N - 2 0 5 5 1 3 - H I G H P O I N T N o r t h C a r o l i n a \ P r o j e c t F i l e s \ 2 0 2 3 \ 0 1 - I n P r o g r e s s \ 0 1 - D W G \ G W M - 2 0 2 3 Q 2 - F 0 6 - B E N Z E N E . d w g L A Y O U T : 6 S A V E D : 8/2 8 / 2 0 2 3 7 : 3 5 P M A C A D V E R : 24 . 1 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 : 8/2 8 / 2 0 2 3 9 : 5 5 P M B Y : R, A N I T A CHEVRON FACILITY #205513 600 SOUTH MAIN STREETHIGH POINT, NORTH CAROLINA 6 FIGURE 0 GRAPHIC SCALE 100'200' SOURCE: Base map digitized from 'WELL LOCATION SURVEY' provided by 'Taylor Wiseman & Taylor', 4101-F Stuart Andrew Blvd., Charlotte, NC. (704) 527-2535, map date June 30, 2005, map scale 1"=50'. Wells surveyed by Taylor Wiseman & Taylor 11/23/2021. Aerial image from Google Earth Pro. 1.RESULTS REPORTED IN MICROGRAMS PER LITER (µg/L). 2.GROUNDWATER SAMPLES COLLECTED JULY 11-13, 2023. 3.GROSS CONTAMINANT LEVEL FOR BENZENE IS 5,000 μg/L. PROPERTY LINE SHALLOW MONITORING WELL DEEP MONITORING WELL BENZENE CONCENTRATION (µg/L) BENZENE CONCENTRATION CONTOUR (µg/L, DASHED WHERE INFERRED) THE COMPOUND WAS POSITIVELYIDENTIFIED; HOWEVER, THE ASSOCIATED NUMERICAL VALUE IS AN ESTIMATED CONCENTRATION ONLY DUPLICATE SAMPLES WELL NOT USED FOR CONTOURING LEGEND NOTES: BENZENE ISOCONCENTRATION CONTOUR MAP 24,100 500 * [ ] J ZAKI ORIENTAL RUGS W. GRIME S A V E N U E 60' R/W BRICK BUILDING S. E L M S T R E E T 68 ' R / W TAYLOR AV E N U E VARIABLE WI D T H R / W S. M A I N S T R E E T 10 0 ' R / W MW-3 <1.00 [<1.00] MW-5<1.00 MW-6<1.00 MW-1 0.159 J MW-2 142 J MW-8985 J MW-791.8 MW-9 24.3 J MW-4D0.473 J* 40 400 IM A G E S : A r c a d i s l o g o . p n g G E N - X - I M A G E 1 . j p g XR E F S : PR O J E C T N A M E : -- - - C:\ U s e r s \ a r i 0 0 0 7 1 \ A C C D o c s \ A r c a d i s \ A U S - C H E V R O N - 2 0 5 5 1 3 - H I G H P O I N T N o r t h C a r o l i n a \ P r o j e c t F i l e s \ 2 0 2 3 \ 0 1 - I n P r o g r e s s \ 0 1 - D W G \ G W M - 2 0 2 3 Q 2 - F 0 7 - 1 2 D C A . d w g L A Y O U T : 7 S A V E D : 9/ 1 2 / 2 0 2 3 1 1 : 0 7 A M A C A D V E R : 24 . 1 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 : 9/1 2 / 2 0 2 3 1 1 : 0 7 A M B Y : R, A N I T A CHEVRON FACILITY #205513 600 SOUTH MAIN STREETHIGH POINT, NORTH CAROLINA 7 FIGURE 0 GRAPHIC SCALE 100'200' 1,2-DCA ISOCONCENTRATION CONTOUR MAP 1.RESULTS REPORTED IN MICROGRAMS PER LITER (µg/L). 2.GROUNDWATER SAMPLES COLLECTED JULY 11-13, 2023. 3.GROSS CONTAMINANT LEVEL FOR 1,2-DCA IS 400 μg/L. PROPERTY LINE SHALLOW MONITORING WELL DEEP MONITORING WELL 1,2-DCA CONCENTRATION (µg/L) 1,2-DCA CONCENTRATION CONTOUR(µg/L, DASHED WHERE INFERRED) 1,2-DICHLOROETHANE THE COMPOUND WAS POSITIVELY IDENTIFIED; HOWEVER, THE ASSOCIATED NUMERICAL VALUE IS AN ESTIMATED CONCENTRATION ONLY LESS THAN REPORTING LIMIT SHOWN DUPLICATE SAMPLES WELL NOT USED FOR CONTOURING LEGEND NOTES: 985 J 40 1,2-DCA SOURCE: Base map digitized from 'WELL LOCATION SURVEY' provided by 'Taylor Wiseman & Taylor', 4101-F Stuart Andrew Blvd., Charlotte, NC. (704) 527-2535, map date June 30, 2005, map scale 1"=50'. Wells surveyed by Taylor Wiseman & Taylor 11/23/2021. Aerial image from Google Earth Pro. [ ] J <1.00 * ZAKI ORIENTAL RUGS W. GRIME S A V E N U E 60' R/W BRICK BUILDIN G S. E L M S T R E E T 68 ' R / W TAYLOR AV E N U E VARIABLE W I D T H R / W S. M A I N S T R E E T 10 0 ' R / W MW-3<0.0204 UJ [<0.0208 UJ] MW-5 <0.0214 UJ MW-6<0.0200 UJ MW-1 <0.0206 MW-21.41 J MW-7 <0.288 J MW-4D<0.0200 MW-8203 MW-9 0.0216 5 100 50 IM A G E S : A r c a d i s l o g o . p n g G E N - X - I M A G E 1 . j p g XR E F S : PR O J E C T N A M E : -- - - C:\ U s e r s \ a r i 0 0 0 7 1 \ A C C D o c s \ A r c a d i s \ A U S - C H E V R O N - 2 0 5 5 1 3 - H I G H P O I N T N o r t h C a r o l i n a \ P r o j e c t F i l e s \ 2 0 2 3 \ 0 1 - I n P r o g r e s s \ 0 1 - D W G \ G W M - 2 0 2 3 Q 2 - F 0 8 - E D B . d w g L A Y O U T : 8 S A V E D : 8/2 8 / 2 0 2 3 1 0 : 0 1 P M A C A D V E R : 24 . 1 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 : 8/ 2 8 / 2 0 2 3 1 0 : 0 2 P M B Y : R, A N I T A CHEVRON FACILITY #205513 600 SOUTH MAIN STREET HIGH POINT, NORTH CAROLINA 8 FIGURE 0 GRAPHIC SCALE 100'200' EDB ISOCONCENTRATION CONTOUR MAP SOURCE: Base map digitized from 'WELL LOCATION SURVEY' provided by 'Taylor Wiseman & Taylor', 4101-F Stuart Andrew Blvd., Charlotte, NC. (704) 527-2535, map date June 30, 2005, map scale 1"=50'. Wells surveyed by Taylor Wiseman & Taylor 11/23/2021. Aerial image from Google Earth Pro. 1.RESULTS REPORTED IN MICROGRAMS PER LITER (µg/L). 2.GROUNDWATER SAMPLES COLLECTED JULY 11-13, 2023. 3.GROSS CONTAMINANT LEVEL FOR EDB IS 50 μg/L. PROPERTY LINE SHALLOW MONITORING WELL DEEP MONITORING WELL EDB CONCENTRATION (µg/L) EDB CONCENTRATION CONTOUR (µg/L, DASHED WHERE INFERRED) ETHYLENE DIBROMIDE THE COMPOUND WAS POSITIVELYIDENTIFIED; HOWEVER, THE ASSOCIATED NUMERICAL VALUE IS AN ESTIMATED CONCENTRATION ONLY THE COMPOUND WAS NOT DETECTED ABOVE THE REPORTED SAMPLE QUANTITATION LIMIT. HOWEVER, THE REPORTED LIMIT IS APPROXIMATE AND MAYOR MAY NOT REPRESENT THE ACTUAL LIMIT OF QUANTITATION LESS THAN REPORTING LIMIT SHOWN LEGEND NOTES: EDB J UJ < 203 5 DUPLICATE SAMPLES[ ] Appendix A Regulatory Correspondence North Carolina Department of Environmental Quality | Division of Waste Management Guilford County Environmental Health | 400 West Market Street | Suite 300 | Greensboro, NC 27401 | (336) 641-3771 APRIL 11, 2023 Chevron Products Company Attn: Christine Lametrie 1400 Smith Street Houston, TX 77022-7327 Re: Acknowledgement of Report Receipt Iloco Mart – High Point – B 500 S. Main Street High Point, Guilford County Incident Number: 14873 Risk Classification: Intermediate Ranking: I140D Dear Ms. Lametrie: The UST Section, Division of Waste Management, is in receipt of the report dated March 31, 2023. The report has been reviewed and will maintained in the Guilford County Department of Health and Human Services Office. The next semi-annual groundwater monitoring event is to be completed in the third quarter of 2023 with a report summarizing the findings due by October 2, 2023. If you have questions regarding the information contained in this letter, please contact Jordan Lerew at the Guilford County Department of Health and Human Services, 400 W. Market Street, Suite 300, Greensboro, NC 27401 or (336) 641-3541. Sincerely, James W. Brown Regional Supervisor Winston-Salem Regional Office UST Section, Division of Waste Management, NCDEQ cc: Sherrie Lang, Arcadis US, Inc., sherrie.lang@arcadis.com Appendix B Groundwater Sampling Field Logs Groundwater Gauging Log Project Number 30064349 Client: Chevron Site ID:205513 Site Location:High Point, North Carolina Measuring Point:Top of Casing Date(s):07/11/2023, 01/23/2023 Sampler(s):Ariel Guggino Rivera Gauging Equipment:Interface Probe Well ID Date Gauging Time Static Water Level (ft bmp) Depth to Product (ft bmp) Total Depth (ft bmp) PID Reading (ppm) LNAPL Removed (gal) Comments MW-1 01/23/2023 13:51 29.64 ND 37.00 0 ---- MW-1 07/11/2023 09:49 28.50 ND 37.75 0 ---- MW-2 01/23/2023 14:29 28.60 ND 37.00 0 ---- MW-2 07/11/2023 10:18 27.42 ND 37.00 0 ---- MW-3 01/23/2023 12:51 15.80 ND 25.00 0 ---- MW-3 07/11/2023 09:13 14.94 ND 25.00 0 ---- MW-4D 01/23/2023 14:38 29.20 ND 57.70 0 ---- MW-4D 07/11/2023 10:27 28.05 ND 57.00 0 ---- MW-5 01/23/2023 13:10 27.56 ND 40.00 0 ---- MW-5 07/11/2023 09:24 26.46 ND 40.00 0 ---- MW-6 01/23/2023 13:33 30.47 ND 40.00 0 ---- MW-6 07/11/2023 09:35 29.27 ND 40.00 0 ---- MW-7 01/23/2023 14:48 29.51 ND 37.28 0 ---- MW-7 07/11/2023 09:59 28.32 ND 37.28 0 ---- MW-8 01/23/2023 14:09 29.12 ND 37.10 0 --Well smells like product but interface did not detect product in water. MW-8 07/11/2023 10:07 27.98 ND 37.20 0 ---- MW-9 01/23/2023 14:20 29.17 ND 37.40 0 ---- MW-9 07/11/2023 10:12 28.00 ND 37.40 0 ---- ft-bmp = feet below measuring point ND = Not Detected PID = Photoionization Detector Reading ppm = parts per million -- = Not Recorded Chevron Groundwater Sampling Form Project Number 30064349 Well ID MW-1 Date 7/13/2023 Site Location High Point, North Carolina Site ID 205513 Weather (°F)Clear Sampled by Ariel Guggino Rivera Measuring Point Description Top of Casing Screen Depth Interval (ft-bmp)22 to 37 Casing Diameter (in.) 2 Well Casing Material PVC Static Water Level (ft-bmp)28.49 Total Depth (ft-bmp)37.7 Water Column (ft) 9.21 Gallons in Well 1.5 Water Quality Meter Make/Model YSI 556 MP5 Purge Method Low-Flow Collection Type Grab Sample Time 10:45 Purge Start 08:18 Purge End 10:40 Well Volumes Purged 1.00 Gallons Purged 1.5 Total Purge Time (h:m) 2:22 Sample ID MW-1 Duplicate ID -- Purge Equipment Bladder Sample Equipment Bladder Time Rate (ml/min) Depth to Water (ft) pH (standard units) Conductivity (mS/cm) Turbidity (NTU) Dissolved Oxygen (mg/L) Temperature (°C) Redox (mV) Color 08:22 50 28.7 0.127 191 5.35 22.23 59.6 Clear 08:29 50 28.64 4.91 0.128 302 5.57 22.08 94.8 Brown 08:39 50 28.59 5.24 0.140 377 4.86 25.58 83 Brown 08:47 50 28.54 5.20 0.155 451 4.79 24.80 88.1 Gray 08:58 50 28.54 5.33 0.162 428 4.82 25.15 83.5 Gray 09:11 50 28.53 5.31 0.164 384 4.70 25.66 86.8 Gray 09:21 50 28.52 5.29 0.165 313 4.73 26.00 87.8 Gray 09:33 50 28.52 5.40 0.168 270 4.48 26.38 83.1 Gray 09:47 50 28.51 5.38 0.168 213 4.33 26.88 78.1 Gray 10:03 50 28.52 5.38 0.168 199 4.11 27.30 74.1 Clear 10:12 50 28.52 5.12 0.170 168 3.92 27.61 83.4 Clear 10:26 50 28.52 5.41 0.169 126 4.21 27.54 75.1 Clear 10:38 50 28.52 5.40 0.170 124 3.97 28.32 64.2 Clear Comments:None Well Casing Volume Conversion ft-bmp = feet below measuring point mS/cm = milliSiemens per centimeter mV = millivolts in. = inches NTU = Nephelometric Turbidity Unit °F = degrees Fahrenheit ft = feet mg/L = milligrams per liter °C = degrees Celsius mL/min = milliliters per minute PVC = Polyvinyl Chloride -- = Not Recorded Chevron Groundwater Sampling Form Well diameter (in.) = gallons per foot 1 = 0.04 1.5 = 0.09 2.5 = 0.26 3.5 = 0.50 6 = 1.47 1.25 = 0.06 2 = 0.16 3 = 0.37 4 = 0.65 Sample Information Sample ID:MW-1 Sample Time:10:45 Sample Depth (ft-bmp) (e.g. pump intake):30 Analytes and Methods:See Chain-of-Custody.Depth to Water at Time of Sampling 28.52 ft-bmp = feet below measuring point mS/cm = milliSiemens per centimeter mV = millivolts in. = inches NTU = Nephelometric Turbidity Unit °F = degrees Fahrenheit ft = feet mg/L = milligrams per liter °C = degrees Celsius mL/min = milliliters per minute PVC = Polyvinyl Chloride -- = Not Recorded Chevron Groundwater Sampling Form Project Number 30064349 Well ID MW-2 Date 7/12/2023 Site Location High Point, North Carolina Site ID 205513 Weather (°F)Clear Sampled by Ariel Guggino Rivera Measuring Point Description Top of Casing Screen Depth Interval (ft-bmp)22 to 37 Casing Diameter (in.) 2 Well Casing Material PVC Static Water Level (ft-bmp)27.42 Total Depth (ft-bmp)37 Water Column (ft) 9.58 Gallons in Well 1.56 Water Quality Meter Make/Model YSI 556 MP5 Purge Method Low-Flow Collection Type Grab Sample Time 18:10 Purge Start 16:58 Purge End 18:00 Well Volumes Purged 1.92 Gallons Purged 3 Total Purge Time (h:m) 1:2 Sample ID MW-2-20230712 Duplicate ID -- Purge Equipment Bladder Sample Equipment Bladder Time Rate (ml/min) Depth to Water (ft) pH (standard units) Conductivity (mS/cm) Turbidity (NTU) Dissolved Oxygen (mg/L) Temperature (°C) Redox (mV) Color 17:01 50 27.21 5.65 0.649 183 2.63 23.33 -14 Clear 17:11 50 28.04 5.67 0.647 195 2.19 21.49 -10.8 Clear 17:17 50 28.17 5.70 0.647 138 2.70 20.98 -9.2 Clear 17:23 50 28.33 5.75 0.646 81.0 2.25 20.96 -7.7 Clear 17:29 50 28.39 5.79 0.647 75.3 2.44 20.92 -10.5 Clear 17:36 50 28.49 5.76 0.648 56.5 1.96 21.54 -14 Clear 17:44 50 28.63 5.89 0.649 52.7 2.44 20.87 -14.8 Clear 17:51 50 28.54 5.84 0.649 34.2 2.50 20.80 -19.5 Clear 17:58 50 28.72 5.90 0.647 31.8 2.53 20.85 -12.6 Clear Comments:None Well Casing Volume Conversion Well diameter (in.) = gallons per foot 1 = 0.04 1.5 = 0.09 2.5 = 0.26 3.5 = 0.50 6 = 1.47 1.25 = 0.06 2 = 0.16 3 = 0.37 4 = 0.65 Sample Information Sample ID:MW-2-20230712 Sample Time:18:10 Sample Depth (ft-bmp) (e.g. pump intake):30 Analytes and Methods:See Chain-of-Custody.Depth to Water at Time of Sampling 28.72 ft-bmp = feet below measuring point mS/cm = milliSiemens per centimeter mV = millivolts in. = inches NTU = Nephelometric Turbidity Unit °F = degrees Fahrenheit ft = feet mg/L = milligrams per liter °C = degrees Celsius mL/min = milliliters per minute PVC = Polyvinyl Chloride -- = Not Recorded Chevron Groundwater Sampling Form Project Number 30064349 Well ID MW-3 Date 7/11/2023 Site Location High Point, North Carolina Site ID 205513 Weather (°F)Clear Sampled by Ariel Guggino Rivera Measuring Point Description Top of Casing Screen Depth Interval (ft-bmp)10 to 25 Casing Diameter (in.) 2 Well Casing Material PVC Static Water Level (ft-bmp)15.07 Total Depth (ft-bmp)25 Water Column (ft) 9.93 Gallons in Well 1.61 Water Quality Meter Make/Model YSI 556 MP5 Purge Method Low-Flow Collection Type Grab Sample Time 13:12 Purge Start 11:53 Purge End 13:11 Well Volumes Purged 0.93 Gallons Purged 1.5 Total Purge Time (h:m) 1:18 Sample ID MW-3-20230711 Duplicate ID DUP-01- 20230711 Purge Equipment Bladder Sample Equipment Bladder Time Rate (ml/min) Depth to Water (ft) pH (standard units) Conductivity (mS/cm) Turbidity (NTU) Dissolved Oxygen (mg/L) Temperature (°C) Redox (mV) Color 11:53 50 15.07 7.16 0.796 580 6.80 23.97 53.6 Brown 12:01 50 15.05 6.19 0.685 477 7.10 22.94 54.8 Brown 12:05 50 15.05 6.22 0.679 393 7.97 22.83 60.8 Gray 12:11 50 15.05 6.00 0.685 393 5.99 23.44 60.7 Gray 12:17 50 15.05 6.09 0.685 393 6.27 23.06 65.8 Gray 12:27 50 15.05 6.21 0.688 264 6.79 22.65 68.3 Gray 12:36 50 15.05 6.15 0.689 191 6.60 22.60 66.4 Clear 12:44 50 15.05 6.24 0.689 158 6.76 22.57 67.8 Clear 12:53 50 15.05 6.24 0.686 158 7.94 22.87 71.7 Clear 13:03 50 15.05 6.25 0.693 101 6.70 22.70 75.1 Clear 13:11 50 15.05 6.16 0.694 81.5 6.55 22.93 75.3 Clear Comments:None Well Casing Volume Conversion Well diameter (in.) = gallons per foot 1 = 0.04 1.5 = 0.09 2.5 = 0.26 3.5 = 0.50 6 = 1.47 1.25 = 0.06 2 = 0.16 3 = 0.37 4 = 0.65 Sample Information ft-bmp = feet below measuring point mS/cm = milliSiemens per centimeter mV = millivolts in. = inches NTU = Nephelometric Turbidity Unit °F = degrees Fahrenheit ft = feet mg/L = milligrams per liter °C = degrees Celsius mL/min = milliliters per minute PVC = Polyvinyl Chloride -- = Not Recorded Chevron Groundwater Sampling Form Sample ID:MW-3-20230711 Sample Time:13:12 Sample Depth (ft-bmp) (e.g. pump intake):15 Analytes and Methods:See Chain-of-Custody.Depth to Water at Time of Sampling 15.05 ft-bmp = feet below measuring point mS/cm = milliSiemens per centimeter mV = millivolts in. = inches NTU = Nephelometric Turbidity Unit °F = degrees Fahrenheit ft = feet mg/L = milligrams per liter °C = degrees Celsius mL/min = milliliters per minute PVC = Polyvinyl Chloride -- = Not Recorded Chevron Groundwater Sampling Form Project Number 30064349 Well ID MW-4D Date 7/13/2023 Site Location High Point, North Carolina Site ID 205513 Weather (°F)Clear Sampled by Ariel Guggino Rivera Measuring Point Description Top of Casing Screen Depth Interval (ft-bmp)53 to 58 Casing Diameter (in.) 6 Well Casing Material Static Water Level (ft-bmp)28 Total Depth (ft-bmp)57 Water Column (ft) 29 Gallons in Well 42.41 Water Quality Meter Make/Model YSI 556 MP5 Purge Method Low-Flow Collection Type Grab Sample Time 17:50 Purge Start 17:02 Purge End 17:49 Well Volumes Purged 0.05 Gallons Purged 2 Total Purge Time (h:m) 0:47 Sample ID MW-4D- 20230713 Duplicate ID -- Purge Equipment Bladder Sample Equipment Bladder Time Rate (ml/min) Depth to Water (ft) pH (standard units) Conductivity (mS/cm) Turbidity (NTU) Dissolved Oxygen (mg/L) Temperature (°C) Redox (mV) Color 17:09 50 28 6.45 0.320 88.4 3.72 26.96 29.2 Clear 17:14 50 28.03 6.05 0.314 78.2 3.46 26.73 29.7 Clear 17:19 50 20.04 6.16 0.313 64.9 3.70 26.28 34.3 Clear 17:25 50 28.04 5.97 0.314 59.1 3.11 27.00 30 Clear 17:30 50 28.04 6.30 0.313 58.9 3.64 26.79 23.8 Clear 17:36 50 28.04 6.42 0.314 53.8 3.57 26.85 21.2 Clear 17:41 50 28.04 6.36 0.313 51.3 3.46 26.32 20 Clear 17:46 50 28.04 6.32 0.312 51.1 3.72 26.30 26 Clear Comments:None Well Casing Volume Conversion Well diameter (in.) = gallons per foot 1 = 0.04 1.5 = 0.09 2.5 = 0.26 3.5 = 0.50 6 = 1.47 1.25 = 0.06 2 = 0.16 3 = 0.37 4 = 0.65 Sample Information Sample ID:MW-4D-20230713 Sample Time:17:50 Sample Depth (ft-bmp) (e.g. pump intake):30 Analytes and Methods:See Chain-of-Custody.Depth to Water at Time of Sampling 28.04 ft-bmp = feet below measuring point mS/cm = milliSiemens per centimeter mV = millivolts in. = inches NTU = Nephelometric Turbidity Unit °F = degrees Fahrenheit ft = feet mg/L = milligrams per liter °C = degrees Celsius mL/min = milliliters per minute PVC = Polyvinyl Chloride -- = Not Recorded Chevron Groundwater Sampling Form Project Number 30064349 Well ID MW-5 Date 7/11/2023 Site Location High Point, North Carolina Site ID 205513 Weather (°F)Clear Sampled by Ariel Guggino Rivera Measuring Point Description Top of Casing Screen Depth Interval (ft-bmp)25 to 40 Casing Diameter (in.) 2 Well Casing Material PVC Static Water Level (ft-bmp)26.45 Total Depth (ft-bmp)40 Water Column (ft) 13.55 Gallons in Well 2.2 Water Quality Meter Make/Model YSI 556 MP5 Purge Method Low-Flow Collection Type Grab Sample Time 17:20 Purge Start 16:04 Purge End 17:17 Well Volumes Purged 0.68 Gallons Purged 1.5 Total Purge Time (h:m) 1:13 Sample ID MW-5-20230711 Duplicate ID -- Purge Equipment Bladder Sample Equipment Bladder Time Rate (ml/min) Depth to Water (ft) pH (standard units) Conductivity (mS/cm) Turbidity (NTU) Dissolved Oxygen (mg/L) Temperature (°C) Redox (mV) Color 16:04 50 26.36 5.38 0.200 5.9 4.97 23.53 58.2 Brown 16:12 50 27.18 4.85 0.179 555 5.48 22.83 66.1 Gray 16:19 50 27.15 4.89 0.174 501 5.54 22.42 75.8 Gray 16:29 50 26.7 5.24 0.177 206 4.96 25.01 73.1 Clear 16:38 50 26.65 5.21 0.176 192 4.94 24.90 77.4 Clear 16:49 50 26.64 5.14 0.175 191 4.98 24.88 88.7 Clear 16:57 50 26.65 5.27 0.175 151 4.26 25.18 76.5 Clear 17:05 50 26.65 5.16 0.175 151 4.79 25.16 89.4 Clear 17:13 50 26.65 5.16 0.174 150 4.78 25.19 89.6 Clear Comments:None Well Casing Volume Conversion Well diameter (in.) = gallons per foot 1 = 0.04 1.5 = 0.09 2.5 = 0.26 3.5 = 0.50 6 = 1.47 1.25 = 0.06 2 = 0.16 3 = 0.37 4 = 0.65 Sample Information Sample ID:MW-5-20230711 Sample Time:17:20 Sample Depth (ft-bmp) (e.g. pump intake):30 Analytes and Methods:See Chain-of-Custody.Depth to Water at Time of Sampling 26.65 ft-bmp = feet below measuring point mS/cm = milliSiemens per centimeter mV = millivolts in. = inches NTU = Nephelometric Turbidity Unit °F = degrees Fahrenheit ft = feet mg/L = milligrams per liter °C = degrees Celsius mL/min = milliliters per minute PVC = Polyvinyl Chloride -- = Not Recorded Chevron Groundwater Sampling Form Project Number 30064349 Well ID MW-6 Date 7/12/2023 Site Location High Point, North Carolina Site ID 205513 Weather (°F)Clear Sampled by Ariel Guggino Rivera Measuring Point Description Top of Casing Screen Depth Interval (ft-bmp)25 to 40 Casing Diameter (in.) 2 Well Casing Material Static Water Level (ft-bmp)29.25 Total Depth (ft-bmp)40 Water Column (ft) 10.75 Gallons in Well 1.75 Water Quality Meter Make/Model YSI 556 MP5 Purge Method Low-Flow Collection Type Grab Sample Time 11:10 Purge Start 09:30 Purge End 11:06 Well Volumes Purged 1.14 Gallons Purged 2 Total Purge Time (h:m) 1:36 Sample ID MW-6-20230712 Duplicate ID MW-6-20230712 -MS/MSD Purge Equipment Bladder Sample Equipment Bladder Time Rate (ml/min) Depth to Water (ft) pH (standard units) Conductivity (mS/cm) Turbidity (NTU) Dissolved Oxygen (mg/L) Temperature (°C) Redox (mV) Color 09:32 50 29.25 4.02 0.121 265 14.10 21.16 150.9 Clear 09:38 50 29.45 3.98 0.070 259 12.58 20.83 134.5 Clear 09:48 50 29.34 4.54 0.075 366 10.80 25.05 109.6 Clear 09:57 50 29.35 4.54 0.078 400 10.73 25.41 114.7 Gray 10:08 50 29.38 4.56 0.082 337 10.96 23.46 125.7 Gray 10:17 50 29.38 4.44 0.081 263 11.02 22.49 113.5 Gray 10:25 50 29.35 4.33 0.080 228 10.66 22.64 113.2 Gray 10:33 50 29.35 4.39 0.081 197 10.48 22.33 111.7 Clear 10:40 50 29.35 4.37 0.081 180 10.05 22.73 111 Clear 10:47 50 29.35 4.40 0.082 154 9.89 22.48 110.4 Clear 10:54 50 29.35 4.32 0.082 150 9.79 22.59 111.9 Clear 11:05 50 29.35 4.40 0.083 156 9.08 23.32 109.4 Clear Comments:None Well Casing Volume Conversion Well diameter (in.) = gallons per foot 1 = 0.04 1.5 = 0.09 2.5 = 0.26 3.5 = 0.50 6 = 1.47 1.25 = 0.06 2 = 0.16 3 = 0.37 4 = 0.65 Sample Information ft-bmp = feet below measuring point mS/cm = milliSiemens per centimeter mV = millivolts in. = inches NTU = Nephelometric Turbidity Unit °F = degrees Fahrenheit ft = feet mg/L = milligrams per liter °C = degrees Celsius mL/min = milliliters per minute PVC = Polyvinyl Chloride -- = Not Recorded Chevron Groundwater Sampling Form Sample ID:MW-6-20230712 Sample Time:11:10 Sample Depth (ft-bmp) (e.g. pump intake):30 Analytes and Methods:See Chain-of-Custody.Depth to Water at Time of Sampling 29.35 ft-bmp = feet below measuring point mS/cm = milliSiemens per centimeter mV = millivolts in. = inches NTU = Nephelometric Turbidity Unit °F = degrees Fahrenheit ft = feet mg/L = milligrams per liter °C = degrees Celsius mL/min = milliliters per minute PVC = Polyvinyl Chloride -- = Not Recorded Chevron Groundwater Sampling Form Project Number 30064349 Well ID MW-7 Date 7/12/2023 Site Location High Point, North Carolina Site ID 205513 Weather (°F)Clear Sampled by Ariel Guggino Rivera Measuring Point Description Top of Casing Screen Depth Interval (ft-bmp)22 to 37 Casing Diameter (in.) 2 Well Casing Material PVC Static Water Level (ft-bmp)28.3 Total Depth (ft-bmp)37 Water Column (ft) 8.7 Gallons in Well 1.41 Water Quality Meter Make/Model YSI 556 MP5 Purge Method Low-Flow Collection Type Grab Sample Time 15:45 Purge Start 14:38 Purge End 15:43 Well Volumes Purged 2.13 Gallons Purged 3 Total Purge Time (h:m) 1:5 Sample ID MW-7-20230712 Duplicate ID -- Purge Equipment Bladder Sample Equipment Bladder Time Rate (ml/min) Depth to Water (ft) pH (standard units) Conductivity (mS/cm) Turbidity (NTU) Dissolved Oxygen (mg/L) Temperature (°C) Redox (mV) Color 14:40 50 28.3 5.40 0.458 132 4.43 25.99 35.9 Clear 14:45 50 28.61 5.63 0.464 64.5 5.24 22.87 16.5 Clear 14:51 50 28.73 5.60 0.464 63.9 3.50 22.63 12.8 Clear 14:58 50 28.82 5.71 0.466 39.3 4.33 22.13 14.3 Clear 15:06 50 28.92 5.75 0.468 28.3 2.88 22.07 7.2 Clear 15:16 50 28.96 7.73 0.471 26.4 2.92 22.58 6 Clear 15:25 50 28.98 5.72 0.473 21.1 2.60 22.36 6 Clear 15:34 50 29.02 5.74 0.474 16.8 2.51 22.39 6.6 Clear 15:41 50 29.03 5.77 0.476 14.4 2.84 22.20 6 Clear Comments:None Well Casing Volume Conversion Well diameter (in.) = gallons per foot 1 = 0.04 1.5 = 0.09 2.5 = 0.26 3.5 = 0.50 6 = 1.47 1.25 = 0.06 2 = 0.16 3 = 0.37 4 = 0.65 Sample Information Sample ID:MW-7-20230712 Sample Time:15:45 Sample Depth (ft-bmp) (e.g. pump intake):30 Analytes and Methods:See Chain-of-Custody.Depth to Water at Time of Sampling 28.98 ft-bmp = feet below measuring point mS/cm = milliSiemens per centimeter mV = millivolts in. = inches NTU = Nephelometric Turbidity Unit °F = degrees Fahrenheit ft = feet mg/L = milligrams per liter °C = degrees Celsius mL/min = milliliters per minute PVC = Polyvinyl Chloride -- = Not Recorded Chevron Groundwater Sampling Form ft-bmp = feet below measuring point mS/cm = milliSiemens per centimeter mV = millivolts in. = inches NTU = Nephelometric Turbidity Unit °F = degrees Fahrenheit ft = feet mg/L = milligrams per liter °C = degrees Celsius mL/min = milliliters per minute PVC = Polyvinyl Chloride -- = Not Recorded Chevron Groundwater Sampling Form Project Number 30064349 Well ID MW-8 Date 7/13/2023 Site Location High Point, North Carolina Site ID 205513 Weather (°F)Clear Sampled by Ariel Guggino Rivera Measuring Point Description Top of Casing Screen Depth Interval (ft-bmp)22 to 37 Casing Diameter (in.) 2 Well Casing Material PVC Static Water Level (ft-bmp)27.96 Total Depth (ft-bmp)37 Water Column (ft) 9.04 Gallons in Well 1.47 Water Quality Meter Make/Model YSI 556 MP5 Purge Method Low-Flow Collection Type Grab Sample Time 13:50 Purge Start 12:39 Purge End 13:48 Well Volumes Purged 1.02 Gallons Purged 1.5 Total Purge Time (h:m) 1:9 Sample ID MW-8-2023073 Duplicate ID -- Purge Equipment Bladder Sample Equipment Bladder Time Rate (ml/min) Depth to Water (ft) pH (standard units) Conductivity (mS/cm) Turbidity (NTU) Dissolved Oxygen (mg/L) Temperature (°C) Redox (mV) Color 12:39 50 27.96 5.91 0.348 69.9 3.08 30.21 37.9 Clear 12:50 50 28.03 5.69 0.381 60.8 2.96 29.55 22.1 Clear 13:01 50 28.03 5.72 0.313 59.5 3.35 29.47 24.8 Clear 13:12 50 28.03 5.76 0.318 55.8 3.34 29.84 34.3 Clear 13:23 50 28.03 5.77 0.325 50.5 3.40 29.77 25.7 Clear 13:35 50 28.04 6.00 0.333 41.7 3.24 32.43 18.3 Clear 13:46 50 28.03 5.98 0.342 31.2 3.42 31.37 8.2 Clear Comments:None Well Casing Volume Conversion Well diameter (in.) = gallons per foot 1 = 0.04 1.5 = 0.09 2.5 = 0.26 3.5 = 0.50 6 = 1.47 1.25 = 0.06 2 = 0.16 3 = 0.37 4 = 0.65 Sample Information Sample ID:MW-8-2023073 Sample Time:13:50 Sample Depth (ft-bmp) (e.g. pump intake):30 Analytes and Methods:See Chain-of-Custody.Depth to Water at Time of Sampling 28.03 ft-bmp = feet below measuring point mS/cm = milliSiemens per centimeter mV = millivolts in. = inches NTU = Nephelometric Turbidity Unit °F = degrees Fahrenheit ft = feet mg/L = milligrams per liter °C = degrees Celsius mL/min = milliliters per minute PVC = Polyvinyl Chloride -- = Not Recorded Chevron Groundwater Sampling Form Project Number 30064349 Well ID MW-9 Date 7/13/2023 Site Location High Point, North Carolina Site ID 205513 Weather (°F)Clear Sampled by Ariel Guggino Rivera Measuring Point Description Top of Casing Screen Depth Interval (ft-bmp)22 to 37 Casing Diameter (in.) 2 Well Casing Material PVC Static Water Level (ft-bmp)27.97 Total Depth (ft-bmp)37 Water Column (ft) 9.03 Gallons in Well 1.47 Water Quality Meter Make/Model YSI 556 MP5 Purge Method Low-Flow Collection Type Grab Sample Time 16:15 Purge Start 14:57 Purge End 16:10 Well Volumes Purged 1.02 Gallons Purged 1.5 Total Purge Time (h:m) 1:13 Sample ID MW-9-20230713 Duplicate ID -- Purge Equipment Bladder Sample Equipment Bladder Time Rate (ml/min) Depth to Water (ft) pH (standard units) Conductivity (mS/cm) Turbidity (NTU) Dissolved Oxygen (mg/L) Temperature (°C) Redox (mV) Color 15:00 50 27.97 6.10 0.437 53.5 3.41 30.83 -56.5 Clear 15:09 50 28.06 5.93 0.433 53.1 3.56 30.45 -41.7 Clear 15:18 50 28.09 5.89 0.431 45.0 4.00 30.57 -32.5 Clear 15:27 50 29.13 6.07 0.428 35.6 3.64 31.03 -39.6 Clear 15:35 50 29.13 6.19 0.425 35.6 3.56 27.25 -40.1 Clear 15:40 50 29.13 6.09 0.428 28.9 3.51 31.43 -39 Clear 15:56 50 29.13 6.12 0.427 26.8 2.96 31.47 -40.5 Clear 16:06 50 29.13 6.14 0.428 19.0 3.90 30.73 -40.1 Clear Comments:None Well Casing Volume Conversion Well diameter (in.) = gallons per foot 1 = 0.04 1.5 = 0.09 2.5 = 0.26 3.5 = 0.50 6 = 1.47 1.25 = 0.06 2 = 0.16 3 = 0.37 4 = 0.65 Sample Information Sample ID:MW-9-20230713 Sample Time:16:15 Sample Depth (ft-bmp) (e.g. pump intake):30 Analytes and Methods:See Chain-of-Custody.Depth to Water at Time of Sampling 29.13 ft-bmp = feet below measuring point mS/cm = milliSiemens per centimeter mV = millivolts in. = inches NTU = Nephelometric Turbidity Unit °F = degrees Fahrenheit ft = feet mg/L = milligrams per liter °C = degrees Celsius mL/min = milliliters per minute PVC = Polyvinyl Chloride -- = Not Recorded Appendix C Laboratory Analytical and Validation Reports ANALYTICAL REPORT July 28, 2023 Arcadis - Chevron - NC Sample Delivery Group:L1635814 Samples Received:07/15/2023 Project Number:30064349 Description:Pod 2 - High Point, NC #205513 Site:205513 Report To:Andrew DeMarco 801 Corporate Center Drive Suite 300 Raleigh, NC 27607 Entire Report Reviewed By: July 28, 2023 [Preliminary Report] Chris McCord Project Manager Results relate only to the items tested or calibrated and are reported as rounded values. This test report shall not be reproduced, except in full, without written approval of the laboratory. Where applicable, sampling conducted by Pace Analytical National is performed per guidance provided in laboratory standard operating procedures ENV-SOP-MTJL-0067 and ENV-SOP-MTJL-0068. Where sampling conducted by the customer, results relate to the accuracy of the information provided, and as the samples are received. Pace Analytical National 12065 Lebanon Rd Mount Juliet, TN 37122 615-758-5858 800-767-5859 www.pacenational.com 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:12 1 of 60 July 28, 2023 Chris McCord Project Manager ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:23 1 of 60 TABLE OF CONTENTS Cp: Cover Page 1 Tc: Table of Contents 2 Ss: Sample Summary 3 Cn: Case Narrative 6 Sr: Sample Results 7 MW-3-20230711 L1635814-01 7 DUP-01-20230711 L1635814-02 9 EB-01-20230711 L1635814-03 11 MW-5-20230711 L1635814-04 13 MW-6-20230712 L1635814-05 15 EB-02-20230712 L1635814-06 17 MW-7-20230712 L1635814-07 19 MW-2-20230712 L1635814-08 21 EB-03-20230713 L1635814-09 23 MW-1-20230713 L1635814-10 25 MW-8-20230713 L1635814-11 27 MW-9-20230713 L1635814-12 29 MW-4D-20230713 L1635814-13 31 Qc: Quality Control Summary 33 Wet Chemistry by Method 3500Fe B-2011 33 Wet Chemistry by Method 9056A 35 Wet Chemistry by Method 9060A 43 Metals (ICP) by Method 6010D 45 Volatile Organic Compounds (GC) by Method RSK175 46 Volatile Organic Compounds (GC/MS) by Method 6200B-1997/6200B-2011 48 EDB / DBCP by Method 8011 55 Gl: Glossary of Terms 56 Al: Accreditations & Locations 57 Sc: Sample Chain of Custody 58 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:12 2 of 60 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:23 2 of 60 SAMPLE SUMMARY Collected by Collected date/time Received date/time MW-3-20230711 L1635814-01 GW A.G.B 07/11/23 13:12 07/15/23 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Wet Chemistry by Method 3500Fe B-2011 WG2095725 1 07/16/23 16:07 07/16/23 16:07 RTW Mt. Juliet, TN Wet Chemistry by Method 9056A WG2097097 1 07/18/23 22:23 07/18/23 22:23 GEB Mt. Juliet, TN Wet Chemistry by Method 9060A WG2100976 1 07/27/23 16:44 07/27/23 16:44 AW Mt. Juliet, TN Metals (ICP) by Method 6010D WG2096554 1 07/18/23 10:14 07/23/23 13:30 ZSA Mt. Juliet, TN Volatile Organic Compounds (GC) by Method RSK175 WG2096697 1 07/18/23 13:13 07/18/23 13:13 BAW Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 6200B-1997/6200B-2011 WG2095840 1 07/16/23 18:40 07/16/23 18:40 JHH Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 6200B-1997/6200B-2011 WG2096917 1 07/20/23 22:56 07/20/23 22:56 ADM Mt. Juliet, TN EDB / DBCP by Method 8011 WG2098245 1.02 07/20/23 13:00 07/21/23 16:25 LTB Mt. Juliet, TN Collected by Collected date/time Received date/time DUP-01-20230711 L1635814-02 GW A.G.B 07/11/23 00:00 07/15/23 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Wet Chemistry by Method 3500Fe B-2011 WG2095725 1 07/16/23 16:08 07/16/23 16:08 RTW Mt. Juliet, TN Wet Chemistry by Method 9056A WG2098891 1 07/21/23 08:47 07/21/23 08:47 GEB Mt. Juliet, TN Wet Chemistry by Method 9060A WG2100976 1 07/27/23 16:58 07/27/23 16:58 AW Mt. Juliet, TN Metals (ICP) by Method 6010D WG2096554 1 07/18/23 10:14 07/23/23 13:33 ZSA Mt. Juliet, TN Volatile Organic Compounds (GC) by Method RSK175 WG2096697 1 07/18/23 13:15 07/18/23 13:15 BAW Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 6200B-1997/6200B-2011 WG2095840 1 07/16/23 18:59 07/16/23 18:59 JHH Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 6200B-1997/6200B-2011 WG2096917 1 07/20/23 23:16 07/20/23 23:16 ADM Mt. Juliet, TN EDB / DBCP by Method 8011 WG2098245 1.04 07/20/23 13:00 07/21/23 16:39 LTB Mt. Juliet, TN Collected by Collected date/time Received date/time EB-01-20230711 L1635814-03 GW A.G.B 07/11/23 14:40 07/15/23 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (GC/MS) by Method 6200B-1997/6200B-2011 WG2095840 1 07/16/23 16:44 07/16/23 16:44 JHH Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 6200B-1997/6200B-2011 WG2096917 1 07/20/23 23:37 07/20/23 23:37 ADM Mt. Juliet, TN EDB / DBCP by Method 8011 WG2098245 1 07/20/23 13:00 07/21/23 16:52 LTB Mt. Juliet, TN Collected by Collected date/time Received date/time MW-5-20230711 L1635814-04 GW A.G.B 07/11/23 17:20 07/15/23 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Wet Chemistry by Method 3500Fe B-2011 WG2095725 1 07/16/23 16:10 07/16/23 16:10 RTW Mt. Juliet, TN Wet Chemistry by Method 9056A WG2099142 1 07/21/23 17:03 07/21/23 17:03 GEB Mt. Juliet, TN Wet Chemistry by Method 9060A WG2100976 1 07/27/23 17:52 07/27/23 17:52 AW Mt. Juliet, TN Metals (ICP) by Method 6010D WG2096554 1 07/18/23 10:14 07/23/23 13:35 ZSA Mt. Juliet, TN Volatile Organic Compounds (GC) by Method RSK175 WG2096697 1 07/18/23 13:17 07/18/23 13:17 BAW Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 6200B-1997/6200B-2011 WG2095840 1 07/16/23 19:18 07/16/23 19:18 JHH Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 6200B-1997/6200B-2011 WG2096917 1 07/20/23 23:57 07/20/23 23:57 ADM Mt. Juliet, TN EDB / DBCP by Method 8011 WG2098245 1.07 07/20/23 13:00 07/21/23 17:06 LTB Mt. Juliet, TN Collected by Collected date/time Received date/time MW-6-20230712 L1635814-05 GW A.G.B 07/12/23 11:10 07/15/23 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Wet Chemistry by Method 3500Fe B-2011 WG2095725 1 07/16/23 16:10 07/16/23 16:10 RTW Mt. Juliet, TN Wet Chemistry by Method 9056A WG2099142 1 07/21/23 17:30 07/21/23 17:30 GEB Mt. Juliet, TN Wet Chemistry by Method 9060A WG2100976 1 07/27/23 18:04 07/27/23 18:04 AW Mt. Juliet, TN Metals (ICP) by Method 6010D WG2096554 1 07/18/23 10:14 07/23/23 13:19 ZSA Mt. Juliet, TN Volatile Organic Compounds (GC) by Method RSK175 WG2096697 1 07/18/23 13:20 07/18/23 13:20 BAW Mt. Juliet, TN 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:12 3 of 60 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:23 3 of 60 SAMPLE SUMMARY Collected by Collected date/time Received date/time MW-6-20230712 L1635814-05 GW A.G.B 07/12/23 11:10 07/15/23 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (GC/MS) by Method 6200B-1997/6200B-2011 WG2095840 1 07/16/23 19:37 07/16/23 19:37 JHH Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 6200B-1997/6200B-2011 WG2096917 1 07/21/23 00:18 07/21/23 00:18 ADM Mt. Juliet, TN EDB / DBCP by Method 8011 WG2098245 1 07/20/23 13:00 07/21/23 12:14 LTB Mt. Juliet, TN Collected by Collected date/time Received date/time EB-02-20230712 L1635814-06 GW A.G.B 07/12/23 12:25 07/15/23 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (GC/MS) by Method 6200B-1997/6200B-2011 WG2095840 1 07/16/23 17:03 07/16/23 17:03 JHH Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 6200B-1997/6200B-2011 WG2096917 1 07/21/23 00:38 07/21/23 00:38 ADM Mt. Juliet, TN EDB / DBCP by Method 8011 WG2098245 1 07/20/23 13:00 07/21/23 17:19 LTB Mt. Juliet, TN Collected by Collected date/time Received date/time MW-7-20230712 L1635814-07 GW A.G.B 07/12/23 15:45 07/15/23 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Wet Chemistry by Method 3500Fe B-2011 WG2095725 10 07/16/23 16:11 07/16/23 16:11 RTW Mt. Juliet, TN Wet Chemistry by Method 9056A WG2099142 1 07/21/23 18:51 07/21/23 18:51 GEB Mt. Juliet, TN Wet Chemistry by Method 9060A WG2100976 1 07/27/23 19:01 07/27/23 19:01 AW Mt. Juliet, TN Metals (ICP) by Method 6010D WG2096554 1 07/18/23 10:14 07/23/23 13:38 ZSA Mt. Juliet, TN Volatile Organic Compounds (GC) by Method RSK175 WG2096697 1 07/18/23 13:23 07/18/23 13:23 BAW Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 6200B-1997/6200B-2011 WG2095840 50 07/16/23 21:13 07/16/23 21:13 JHH Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 6200B-1997/6200B-2011 WG2096917 50 07/21/23 03:42 07/21/23 03:42 ADM Mt. Juliet, TN EDB / DBCP by Method 8011 WG2098245 1.01 07/20/23 13:00 07/21/23 17:32 LTB Mt. Juliet, TN Collected by Collected date/time Received date/time MW-2-20230712 L1635814-08 GW A.G.B 07/12/23 18:10 07/15/23 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Wet Chemistry by Method 3500Fe B-2011 WG2095725 10 07/16/23 16:11 07/16/23 16:11 RTW Mt. Juliet, TN Wet Chemistry by Method 9056A WG2099142 1 07/21/23 19:05 07/21/23 19:05 GEB Mt. Juliet, TN Wet Chemistry by Method 9060A WG2100976 1 07/27/23 19:20 07/27/23 19:20 AW Mt. Juliet, TN Metals (ICP) by Method 6010D WG2096554 1 07/18/23 10:14 07/23/23 13:46 ZSA Mt. Juliet, TN Volatile Organic Compounds (GC) by Method RSK175 WG2096697 1 07/18/23 13:27 07/18/23 13:27 BAW Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 6200B-1997/6200B-2011 WG2095840 200 07/16/23 21:32 07/16/23 21:32 JHH Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 6200B-1997/6200B-2011 WG2096917 200 07/21/23 04:03 07/21/23 04:03 ADM Mt. Juliet, TN EDB / DBCP by Method 8011 WG2098245 5 07/20/23 13:00 07/24/23 15:33 LTB Mt. Juliet, TN Collected by Collected date/time Received date/time EB-03-20230713 L1635814-09 GW A.G.B 07/13/23 08:30 07/15/23 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (GC/MS) by Method 6200B-1997/6200B-2011 WG2095840 1 07/16/23 17:23 07/16/23 17:23 JHH Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 6200B-1997/6200B-2011 WG2096917 1 07/21/23 00:59 07/21/23 00:59 ADM Mt. Juliet, TN EDB / DBCP by Method 8011 WG2098245 1.02 07/20/23 13:00 07/21/23 17:57 LTB Mt. Juliet, TN 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:12 4 of 60 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:23 4 of 60 SAMPLE SUMMARY Collected by Collected date/time Received date/time MW-1-20230713 L1635814-10 GW A.G.B 07/13/23 10:45 07/15/23 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Wet Chemistry by Method 3500Fe B-2011 WG2095730 1 07/16/23 11:51 07/16/23 11:51 RTW Mt. Juliet, TN Wet Chemistry by Method 9056A WG2099142 1 07/21/23 19:18 07/21/23 19:18 GEB Mt. Juliet, TN Wet Chemistry by Method 9060A WG2100976 1 07/27/23 19:33 07/27/23 19:33 AW Mt. Juliet, TN Metals (ICP) by Method 6010D WG2096554 1 07/18/23 10:14 07/23/23 13:49 ZSA Mt. Juliet, TN Volatile Organic Compounds (GC) by Method RSK175 WG2096697 1 07/18/23 13:31 07/18/23 13:31 BAW Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 6200B-1997/6200B-2011 WG2095840 1 07/16/23 19:56 07/16/23 19:56 JHH Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 6200B-1997/6200B-2011 WG2096917 1 07/21/23 01:19 07/21/23 01:19 ADM Mt. Juliet, TN EDB / DBCP by Method 8011 WG2098245 1.03 07/20/23 13:00 07/21/23 18:49 LTB Mt. Juliet, TN Collected by Collected date/time Received date/time MW-8-20230713 L1635814-11 GW A.G.B 07/13/23 13:50 07/15/23 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Wet Chemistry by Method 3500Fe B-2011 WG2095730 10 07/16/23 11:52 07/16/23 11:52 RTW Mt. Juliet, TN Wet Chemistry by Method 9056A WG2099142 1 07/21/23 19:30 07/21/23 19:30 GEB Mt. Juliet, TN Wet Chemistry by Method 9060A WG2100976 1 07/27/23 19:51 07/27/23 19:51 AW Mt. Juliet, TN Metals (ICP) by Method 6010D WG2096554 1 07/18/23 10:14 07/23/23 13:52 ZSA Mt. Juliet, TN Volatile Organic Compounds (GC) by Method RSK175 WG2096697 1 07/18/23 13:49 07/18/23 13:49 BAW Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 6200B-1997/6200B-2011 WG2095840 1000 07/16/23 21:51 07/16/23 21:51 JHH Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 6200B-1997/6200B-2011 WG2096917 1000 07/21/23 04:23 07/21/23 04:23 ADM Mt. Juliet, TN EDB / DBCP by Method 8011 WG2098245 1100 07/20/23 13:00 07/24/23 15:47 LTB Mt. Juliet, TN Collected by Collected date/time Received date/time MW-9-20230713 L1635814-12 GW A.G.B 07/13/23 16:15 07/15/23 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Wet Chemistry by Method 3500Fe B-2011 WG2095730 10 07/16/23 11:52 07/16/23 11:52 RTW Mt. Juliet, TN Wet Chemistry by Method 9056A WG2095435 1 07/15/23 14:53 07/15/23 14:53 HMM Mt. Juliet, TN Wet Chemistry by Method 9060A WG2100982 1 07/26/23 16:01 07/26/23 16:01 SJF Mt. Juliet, TN Metals (ICP) by Method 6010D WG2096554 1 07/18/23 10:14 07/23/23 13:55 ZSA Mt. Juliet, TN Volatile Organic Compounds (GC) by Method RSK175 WG2096697 1 07/18/23 13:54 07/18/23 13:54 BAW Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 6200B-1997/6200B-2011 WG2095840 200 07/16/23 22:10 07/16/23 22:10 JHH Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 6200B-1997/6200B-2011 WG2096917 200 07/21/23 04:44 07/21/23 04:44 ADM Mt. Juliet, TN EDB / DBCP by Method 8011 WG2098245 1 07/20/23 13:00 07/24/23 13:16 LTB Mt. Juliet, TN Collected by Collected date/time Received date/time MW-4D-20230713 L1635814-13 GW A.G.B 07/13/23 17:50 07/15/23 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Wet Chemistry by Method 3500Fe B-2011 WG2095730 1 07/16/23 11:54 07/16/23 11:54 RTW Mt. Juliet, TN Wet Chemistry by Method 9056A WG2095435 1 07/15/23 15:08 07/15/23 15:08 HMM Mt. Juliet, TN Wet Chemistry by Method 9060A WG2100982 1 07/26/23 16:14 07/26/23 16:14 SJF Mt. Juliet, TN Metals (ICP) by Method 6010D WG2096554 1 07/18/23 10:14 07/23/23 13:58 ZSA Mt. Juliet, TN Volatile Organic Compounds (GC) by Method RSK175 WG2097489 1 07/19/23 10:41 07/19/23 10:41 CCM Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 6200B-1997/6200B-2011 WG2095840 1 07/16/23 20:16 07/16/23 20:16 JHH Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 6200B-1997/6200B-2011 WG2096917 1 07/21/23 01:40 07/21/23 01:40 ADM Mt. Juliet, TN EDB / DBCP by Method 8011 WG2098245 1 07/20/23 13:00 07/21/23 19:27 LTB Mt. Juliet, TN 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:12 5 of 60 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:23 5 of 60 CASE NARRATIVE All sample aliquots were received at the correct temperature, in the proper containers, with the appropriate preservatives, and within method specified holding times, unless qualified or notated within the report. Where applicable, all MDL (LOD) and RDL (LOQ) values reported for environmental samples have been corrected for the dilution factor used in the analysis. All Method and Batch Quality Control are within established criteria except where addressed in this case narrative, a non-conformance form or properly qualified within the sample results. By my digital signature below, I affirm to the best of my knowledge, all problems/anomalies observed by the laboratory as having the potential to affect the quality of the data have been identified by the laboratory, and no information or data have been knowingly withheld that would affect the quality of the data. [Preliminary Report] Chris McCord Project Manager 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:12 6 of 60 Chris McCord Project Manager ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:23 6 of 60 SAMPLE RESULTS - 01 L1635814 MW-3-20230711 Collected date/time: 07/11/23 13:12 Wet Chemistry by Method 3500Fe B-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Ferrous Iron 43.0 J T8 15.0 50.0 1 07/16/2023 16:07 WG2095725 Wet Chemistry by Method 9056A Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Nitrate 5200 T8 48.0 100 1 07/18/2023 22:23 WG2097097 Sulfate 169000 594 5000 1 07/18/2023 22:23 WG2097097 Wet Chemistry by Method 9060A Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time TOC (Total Organic Carbon)1580 102 1000 1 07/27/2023 16:44 WG2100976 Metals (ICP) by Method 6010D Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Iron 1220 18.0 100 1 07/23/2023 13:30 WG2096554 Volatile Organic Compounds (GC) by Method RSK175 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Methane U 2.91 10.0 1 07/18/2023 13:13 WG2096697 Volatile Organic Compounds (GC/MS) by Method 6200B-1997/6200B-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Acetone U 11.3 50.0 1 07/16/2023 18:40 WG2095840 Acrolein U 2.54 50.0 1 07/16/2023 18:40 WG2095840 Acrylonitrile U 0.671 10.0 1 07/16/2023 18:40 WG2095840 Benzene U 0.0941 1.00 1 07/16/2023 18:40 WG2095840 Bromobenzene U 0.118 1.00 1 07/16/2023 18:40 WG2095840 Bromodichloromethane U 0.136 1.00 1 07/16/2023 18:40 WG2095840 Bromoform U 0.129 1.00 1 07/16/2023 18:40 WG2095840 Bromomethane U 0.605 5.00 1 07/16/2023 18:40 WG2095840 n-Butylbenzene U 0.157 1.00 1 07/16/2023 18:40 WG2095840 sec-Butylbenzene U 0.125 1.00 1 07/16/2023 18:40 WG2095840 tert-Butylbenzene U 0.127 1.00 1 07/16/2023 18:40 WG2095840 Carbon tetrachloride U 0.128 1.00 1 07/16/2023 18:40 WG2095840 Chlorobenzene U 0.116 1.00 1 07/16/2023 18:40 WG2095840 Chlorodibromomethane U 0.140 1.00 1 07/16/2023 18:40 WG2095840 Chloroethane U 0.192 5.00 1 07/16/2023 18:40 WG2095840 Chloroform U 0.111 5.00 1 07/16/2023 18:40 WG2095840 Chloromethane U 0.960 2.50 1 07/16/2023 18:40 WG2095840 2-Chlorotoluene U 0.106 1.00 1 07/16/2023 18:40 WG2095840 4-Chlorotoluene U 0.114 1.00 1 07/16/2023 18:40 WG2095840 1,2-Dibromo-3-Chloropropane U 0.276 5.00 1 07/16/2023 18:40 WG2095840 1,2-Dibromoethane U 0.126 1.00 1 07/16/2023 18:40 WG2095840 Dibromomethane U 0.122 1.00 1 07/16/2023 18:40 WG2095840 1,2-Dichlorobenzene U 0.107 1.00 1 07/16/2023 18:40 WG2095840 1,3-Dichlorobenzene U 0.110 1.00 1 07/16/2023 18:40 WG2095840 1,4-Dichlorobenzene U 0.120 1.00 1 07/16/2023 18:40 WG2095840 Dichlorodifluoromethane U 0.374 5.00 1 07/16/2023 18:40 WG2095840 1,1-Dichloroethane U 0.100 1.00 1 07/16/2023 18:40 WG2095840 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:12 7 of 60 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:23 7 of 60 SAMPLE RESULTS - 01 L1635814 MW-3-20230711 Collected date/time: 07/11/23 13:12 Volatile Organic Compounds (GC/MS) by Method 6200B-1997/6200B-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time 1,2-Dichloroethane U 0.0819 1.00 1 07/16/2023 18:40 WG2095840 1,1-Dichloroethene U 0.188 1.00 1 07/16/2023 18:40 WG2095840 cis-1,2-Dichloroethene U 0.126 1.00 1 07/16/2023 18:40 WG2095840 trans-1,2-Dichloroethene U 0.149 1.00 1 07/16/2023 18:40 WG2095840 1,2-Dichloropropane U 0.149 1.00 1 07/16/2023 18:40 WG2095840 1,1-Dichloropropene U 0.142 1.00 1 07/16/2023 18:40 WG2095840 1,3-Dichloropropane U 0.110 1.00 1 07/16/2023 18:40 WG2095840 2,2-Dichloropropane U 0.161 1.00 1 07/16/2023 18:40 WG2095840 Di-isopropyl ether U 0.105 1.00 1 07/16/2023 18:40 WG2095840 Ethylbenzene U 0.137 1.00 1 07/16/2023 18:40 WG2095840 Hexachloro-1,3-butadiene U 0.337 1.00 1 07/16/2023 18:40 WG2095840 Isopropylbenzene U 0.105 1.00 1 07/16/2023 18:40 WG2095840 p-Isopropyltoluene U 0.120 1.00 1 07/16/2023 18:40 WG2095840 2-Butanone (MEK)U 1.19 10.0 1 07/16/2023 18:40 WG2095840 Methylene Chloride U 0.430 5.00 1 07/16/2023 18:40 WG2095840 4-Methyl-2-pentanone (MIBK)U 0.478 10.0 1 07/16/2023 18:40 WG2095840 Methyl tert-butyl ether U 0.101 1.00 1 07/16/2023 18:40 WG2095840 Naphthalene U 1.00 5.00 1 07/16/2023 18:40 WG2095840 n-Propylbenzene U 0.0993 1.00 1 07/16/2023 18:40 WG2095840 Styrene U 0.118 1.00 1 07/16/2023 18:40 WG2095840 1,1,1,2-Tetrachloroethane U 0.147 1.00 1 07/16/2023 18:40 WG2095840 1,1,2,2-Tetrachloroethane U 0.133 1.00 1 07/16/2023 18:40 WG2095840 Tetrachloroethene U 0.300 1.00 1 07/16/2023 18:40 WG2095840 Toluene U 0.278 1.00 1 07/16/2023 18:40 WG2095840 1,2,3-Trichlorobenzene U 0.230 1.00 1 07/16/2023 18:40 WG2095840 1,2,4-Trichlorobenzene U 0.481 1.00 1 07/16/2023 18:40 WG2095840 1,1,1-Trichloroethane U 0.149 1.00 1 07/16/2023 18:40 WG2095840 1,1,2-Trichloroethane U 0.158 1.00 1 07/16/2023 18:40 WG2095840 Trichloroethene U 0.190 1.00 1 07/16/2023 18:40 WG2095840 Trichlorofluoromethane U 0.160 5.00 1 07/16/2023 18:40 WG2095840 1,2,3-Trichloropropane U 0.237 2.50 1 07/16/2023 18:40 WG2095840 1,2,4-Trimethylbenzene U 0.322 1.00 1 07/16/2023 18:40 WG2095840 1,3,5-Trimethylbenzene U 0.104 1.00 1 07/16/2023 18:40 WG2095840 Vinyl chloride U 0.234 1.00 1 07/16/2023 18:40 WG2095840 o-Xylene U 0.174 1.00 1 07/16/2023 18:40 WG2095840 m&p-Xylenes U 0.430 2.00 1 07/16/2023 18:40 WG2095840 Xylenes, Total U 0.174 3.00 1 07/16/2023 18:40 WG2095840 ethanol U 42.0 100 1 07/20/2023 22:56 WG2096917 3,3-Dimethyl-1-butanol U 4.51 100 1 07/20/2023 22:56 WG2096917 Ethyl tert-butyl ether U 0.101 1.00 1 07/16/2023 18:40 WG2095840 t-Amyl Alcohol U 4.90 50.0 1 07/16/2023 18:40 WG2095840 tert-Butyl alcohol U 4.06 5.00 1 07/20/2023 22:56 WG2096917 tert-Butyl Formate U 4.51 20.0 1 07/16/2023 18:40 WG2095840 tert-Amyl Methyl Ether U 0.195 1.00 1 07/16/2023 18:40 WG2095840 (S) Toluene-d8 105 80.0-120 07/16/2023 18:40 WG2095840 (S) Toluene-d8 99.9 80.0-120 07/20/2023 22:56 WG2096917 (S) 4-Bromofluorobenzene 96.7 77.0-126 07/16/2023 18:40 WG2095840 (S) 4-Bromofluorobenzene 99.8 77.0-126 07/20/2023 22:56 WG2096917 (S) 1,2-Dichloroethane-d4 112 70.0-130 07/16/2023 18:40 WG2095840 (S) 1,2-Dichloroethane-d4 117 70.0-130 07/20/2023 22:56 WG2096917 EDB / DBCP by Method 8011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Ethylene Dibromide U 0.00547 0.0204 1.02 07/21/2023 16:25 WG2098245 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:12 8 of 60 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:23 8 of 60 SAMPLE RESULTS - 02 L1635814 DUP-01-20230711 Collected date/time: 07/11/23 00:00 Wet Chemistry by Method 3500Fe B-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Ferrous Iron 49.0 J T8 15.0 50.0 1 07/16/2023 16:08 WG2095725 Wet Chemistry by Method 9056A Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Nitrate 5340 T8 48.0 100 1 07/21/2023 08:47 WG2098891 Sulfate 167000 594 5000 1 07/21/2023 08:47 WG2098891 Wet Chemistry by Method 9060A Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time TOC (Total Organic Carbon)2120 102 1000 1 07/27/2023 16:58 WG2100976 Metals (ICP) by Method 6010D Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Iron 758 18.0 100 1 07/23/2023 13:33 WG2096554 Volatile Organic Compounds (GC) by Method RSK175 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Methane U 2.91 10.0 1 07/18/2023 13:15 WG2096697 Volatile Organic Compounds (GC/MS) by Method 6200B-1997/6200B-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Acetone U 11.3 50.0 1 07/16/2023 18:59 WG2095840 Acrolein U 2.54 50.0 1 07/16/2023 18:59 WG2095840 Acrylonitrile U 0.671 10.0 1 07/16/2023 18:59 WG2095840 Benzene U 0.0941 1.00 1 07/16/2023 18:59 WG2095840 Bromobenzene U 0.118 1.00 1 07/16/2023 18:59 WG2095840 Bromodichloromethane U 0.136 1.00 1 07/16/2023 18:59 WG2095840 Bromoform U 0.129 1.00 1 07/16/2023 18:59 WG2095840 Bromomethane U 0.605 5.00 1 07/16/2023 18:59 WG2095840 n-Butylbenzene U 0.157 1.00 1 07/16/2023 18:59 WG2095840 sec-Butylbenzene U 0.125 1.00 1 07/16/2023 18:59 WG2095840 tert-Butylbenzene U 0.127 1.00 1 07/16/2023 18:59 WG2095840 Carbon tetrachloride U 0.128 1.00 1 07/16/2023 18:59 WG2095840 Chlorobenzene U 0.116 1.00 1 07/16/2023 18:59 WG2095840 Chlorodibromomethane U 0.140 1.00 1 07/16/2023 18:59 WG2095840 Chloroethane U 0.192 5.00 1 07/16/2023 18:59 WG2095840 Chloroform U 0.111 5.00 1 07/16/2023 18:59 WG2095840 Chloromethane U 0.960 2.50 1 07/16/2023 18:59 WG2095840 2-Chlorotoluene U 0.106 1.00 1 07/16/2023 18:59 WG2095840 4-Chlorotoluene U 0.114 1.00 1 07/16/2023 18:59 WG2095840 1,2-Dibromo-3-Chloropropane U 0.276 5.00 1 07/16/2023 18:59 WG2095840 1,2-Dibromoethane U 0.126 1.00 1 07/16/2023 18:59 WG2095840 Dibromomethane U 0.122 1.00 1 07/16/2023 18:59 WG2095840 1,2-Dichlorobenzene U 0.107 1.00 1 07/16/2023 18:59 WG2095840 1,3-Dichlorobenzene U 0.110 1.00 1 07/16/2023 18:59 WG2095840 1,4-Dichlorobenzene U 0.120 1.00 1 07/16/2023 18:59 WG2095840 Dichlorodifluoromethane U 0.374 5.00 1 07/16/2023 18:59 WG2095840 1,1-Dichloroethane U 0.100 1.00 1 07/16/2023 18:59 WG2095840 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:12 9 of 60 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:23 9 of 60 SAMPLE RESULTS - 02 L1635814 DUP-01-20230711 Collected date/time: 07/11/23 00:00 Volatile Organic Compounds (GC/MS) by Method 6200B-1997/6200B-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time 1,2-Dichloroethane U 0.0819 1.00 1 07/16/2023 18:59 WG2095840 1,1-Dichloroethene U 0.188 1.00 1 07/16/2023 18:59 WG2095840 cis-1,2-Dichloroethene U 0.126 1.00 1 07/16/2023 18:59 WG2095840 trans-1,2-Dichloroethene U 0.149 1.00 1 07/16/2023 18:59 WG2095840 1,2-Dichloropropane U 0.149 1.00 1 07/16/2023 18:59 WG2095840 1,1-Dichloropropene U 0.142 1.00 1 07/16/2023 18:59 WG2095840 1,3-Dichloropropane U 0.110 1.00 1 07/16/2023 18:59 WG2095840 2,2-Dichloropropane U 0.161 1.00 1 07/16/2023 18:59 WG2095840 Di-isopropyl ether U 0.105 1.00 1 07/16/2023 18:59 WG2095840 Ethylbenzene U 0.137 1.00 1 07/16/2023 18:59 WG2095840 Hexachloro-1,3-butadiene U 0.337 1.00 1 07/16/2023 18:59 WG2095840 Isopropylbenzene U 0.105 1.00 1 07/16/2023 18:59 WG2095840 p-Isopropyltoluene U 0.120 1.00 1 07/16/2023 18:59 WG2095840 2-Butanone (MEK)U 1.19 10.0 1 07/16/2023 18:59 WG2095840 Methylene Chloride U 0.430 5.00 1 07/16/2023 18:59 WG2095840 4-Methyl-2-pentanone (MIBK)U 0.478 10.0 1 07/16/2023 18:59 WG2095840 Methyl tert-butyl ether U 0.101 1.00 1 07/16/2023 18:59 WG2095840 Naphthalene U 1.00 5.00 1 07/16/2023 18:59 WG2095840 n-Propylbenzene U 0.0993 1.00 1 07/16/2023 18:59 WG2095840 Styrene U 0.118 1.00 1 07/16/2023 18:59 WG2095840 1,1,1,2-Tetrachloroethane U 0.147 1.00 1 07/16/2023 18:59 WG2095840 1,1,2,2-Tetrachloroethane U 0.133 1.00 1 07/16/2023 18:59 WG2095840 Tetrachloroethene U 0.300 1.00 1 07/16/2023 18:59 WG2095840 Toluene U 0.278 1.00 1 07/16/2023 18:59 WG2095840 1,2,3-Trichlorobenzene U 0.230 1.00 1 07/16/2023 18:59 WG2095840 1,2,4-Trichlorobenzene U 0.481 1.00 1 07/16/2023 18:59 WG2095840 1,1,1-Trichloroethane U 0.149 1.00 1 07/16/2023 18:59 WG2095840 1,1,2-Trichloroethane U 0.158 1.00 1 07/16/2023 18:59 WG2095840 Trichloroethene U 0.190 1.00 1 07/16/2023 18:59 WG2095840 Trichlorofluoromethane U 0.160 5.00 1 07/16/2023 18:59 WG2095840 1,2,3-Trichloropropane U 0.237 2.50 1 07/16/2023 18:59 WG2095840 1,2,4-Trimethylbenzene U 0.322 1.00 1 07/16/2023 18:59 WG2095840 1,3,5-Trimethylbenzene U 0.104 1.00 1 07/16/2023 18:59 WG2095840 Vinyl chloride U 0.234 1.00 1 07/16/2023 18:59 WG2095840 o-Xylene U 0.174 1.00 1 07/16/2023 18:59 WG2095840 m&p-Xylenes U 0.430 2.00 1 07/16/2023 18:59 WG2095840 Xylenes, Total U 0.174 3.00 1 07/16/2023 18:59 WG2095840 ethanol U 42.0 100 1 07/20/2023 23:16 WG2096917 3,3-Dimethyl-1-butanol U 4.51 100 1 07/20/2023 23:16 WG2096917 Ethyl tert-butyl ether U 0.101 1.00 1 07/16/2023 18:59 WG2095840 t-Amyl Alcohol U 4.90 50.0 1 07/16/2023 18:59 WG2095840 tert-Butyl alcohol U 4.06 5.00 1 07/20/2023 23:16 WG2096917 tert-Butyl Formate U 4.51 20.0 1 07/16/2023 18:59 WG2095840 tert-Amyl Methyl Ether U 0.195 1.00 1 07/16/2023 18:59 WG2095840 (S) Toluene-d8 103 80.0-120 07/16/2023 18:59 WG2095840 (S) Toluene-d8 99.9 80.0-120 07/20/2023 23:16 WG2096917 (S) 4-Bromofluorobenzene 94.3 77.0-126 07/16/2023 18:59 WG2095840 (S) 4-Bromofluorobenzene 98.6 77.0-126 07/20/2023 23:16 WG2096917 (S) 1,2-Dichloroethane-d4 111 70.0-130 07/16/2023 18:59 WG2095840 (S) 1,2-Dichloroethane-d4 118 70.0-130 07/20/2023 23:16 WG2096917 EDB / DBCP by Method 8011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Ethylene Dibromide U 0.00557 0.0208 1.04 07/21/2023 16:39 WG2098245 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:12 10 of 60 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:23 10 of 60 SAMPLE RESULTS - 03 L1635814 EB-01-20230711 Collected date/time: 07/11/23 14:40 Volatile Organic Compounds (GC/MS) by Method 6200B-1997/6200B-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Acetone U 11.3 50.0 1 07/16/2023 16:44 WG2095840 Acrolein U 2.54 50.0 1 07/16/2023 16:44 WG2095840 Acrylonitrile U 0.671 10.0 1 07/16/2023 16:44 WG2095840 Benzene U 0.0941 1.00 1 07/16/2023 16:44 WG2095840 Bromobenzene U 0.118 1.00 1 07/16/2023 16:44 WG2095840 Bromodichloromethane U 0.136 1.00 1 07/16/2023 16:44 WG2095840 Bromoform U 0.129 1.00 1 07/16/2023 16:44 WG2095840 Bromomethane U 0.605 5.00 1 07/16/2023 16:44 WG2095840 n-Butylbenzene U 0.157 1.00 1 07/16/2023 16:44 WG2095840 sec-Butylbenzene U 0.125 1.00 1 07/16/2023 16:44 WG2095840 tert-Butylbenzene U 0.127 1.00 1 07/16/2023 16:44 WG2095840 Carbon tetrachloride U 0.128 1.00 1 07/16/2023 16:44 WG2095840 Chlorobenzene U 0.116 1.00 1 07/16/2023 16:44 WG2095840 Chlorodibromomethane U 0.140 1.00 1 07/16/2023 16:44 WG2095840 Chloroethane U 0.192 5.00 1 07/16/2023 16:44 WG2095840 Chloroform 1.50 J 0.111 5.00 1 07/16/2023 16:44 WG2095840 Chloromethane U 0.960 2.50 1 07/16/2023 16:44 WG2095840 2-Chlorotoluene U 0.106 1.00 1 07/16/2023 16:44 WG2095840 4-Chlorotoluene U 0.114 1.00 1 07/16/2023 16:44 WG2095840 1,2-Dibromo-3-Chloropropane U 0.276 5.00 1 07/16/2023 16:44 WG2095840 1,2-Dibromoethane U 0.126 1.00 1 07/16/2023 16:44 WG2095840 Dibromomethane U 0.122 1.00 1 07/16/2023 16:44 WG2095840 1,2-Dichlorobenzene U 0.107 1.00 1 07/16/2023 16:44 WG2095840 1,3-Dichlorobenzene U 0.110 1.00 1 07/16/2023 16:44 WG2095840 1,4-Dichlorobenzene U 0.120 1.00 1 07/16/2023 16:44 WG2095840 Dichlorodifluoromethane U 0.374 5.00 1 07/16/2023 16:44 WG2095840 1,1-Dichloroethane U 0.100 1.00 1 07/16/2023 16:44 WG2095840 1,2-Dichloroethane U 0.0819 1.00 1 07/16/2023 16:44 WG2095840 1,1-Dichloroethene U 0.188 1.00 1 07/16/2023 16:44 WG2095840 cis-1,2-Dichloroethene U 0.126 1.00 1 07/16/2023 16:44 WG2095840 trans-1,2-Dichloroethene U 0.149 1.00 1 07/16/2023 16:44 WG2095840 1,2-Dichloropropane U 0.149 1.00 1 07/16/2023 16:44 WG2095840 1,1-Dichloropropene U 0.142 1.00 1 07/16/2023 16:44 WG2095840 1,3-Dichloropropane U 0.110 1.00 1 07/16/2023 16:44 WG2095840 2,2-Dichloropropane U 0.161 1.00 1 07/16/2023 16:44 WG2095840 Di-isopropyl ether U 0.105 1.00 1 07/16/2023 16:44 WG2095840 Ethylbenzene U 0.137 1.00 1 07/16/2023 16:44 WG2095840 Hexachloro-1,3-butadiene U 0.337 1.00 1 07/16/2023 16:44 WG2095840 Isopropylbenzene U 0.105 1.00 1 07/16/2023 16:44 WG2095840 p-Isopropyltoluene U 0.120 1.00 1 07/16/2023 16:44 WG2095840 2-Butanone (MEK)U 1.19 10.0 1 07/16/2023 16:44 WG2095840 Methylene Chloride U 0.430 5.00 1 07/16/2023 16:44 WG2095840 4-Methyl-2-pentanone (MIBK)U 0.478 10.0 1 07/16/2023 16:44 WG2095840 Methyl tert-butyl ether U 0.101 1.00 1 07/16/2023 16:44 WG2095840 Naphthalene U 1.00 5.00 1 07/16/2023 16:44 WG2095840 n-Propylbenzene U 0.0993 1.00 1 07/16/2023 16:44 WG2095840 Styrene U 0.118 1.00 1 07/16/2023 16:44 WG2095840 1,1,1,2-Tetrachloroethane U 0.147 1.00 1 07/16/2023 16:44 WG2095840 1,1,2,2-Tetrachloroethane U 0.133 1.00 1 07/16/2023 16:44 WG2095840 Tetrachloroethene U 0.300 1.00 1 07/16/2023 16:44 WG2095840 Toluene U 0.278 1.00 1 07/16/2023 16:44 WG2095840 1,2,3-Trichlorobenzene U 0.230 1.00 1 07/16/2023 16:44 WG2095840 1,2,4-Trichlorobenzene U 0.481 1.00 1 07/16/2023 16:44 WG2095840 1,1,1-Trichloroethane U 0.149 1.00 1 07/16/2023 16:44 WG2095840 1,1,2-Trichloroethane U 0.158 1.00 1 07/16/2023 16:44 WG2095840 Trichloroethene U 0.190 1.00 1 07/16/2023 16:44 WG2095840 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:12 11 of 60 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:23 11 of 60 SAMPLE RESULTS - 03 L1635814 EB-01-20230711 Collected date/time: 07/11/23 14:40 Volatile Organic Compounds (GC/MS) by Method 6200B-1997/6200B-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Trichlorofluoromethane U 0.160 5.00 1 07/16/2023 16:44 WG2095840 1,2,3-Trichloropropane U 0.237 2.50 1 07/16/2023 16:44 WG2095840 1,2,4-Trimethylbenzene U 0.322 1.00 1 07/16/2023 16:44 WG2095840 1,3,5-Trimethylbenzene U 0.104 1.00 1 07/16/2023 16:44 WG2095840 Vinyl chloride U 0.234 1.00 1 07/16/2023 16:44 WG2095840 o-Xylene U 0.174 1.00 1 07/16/2023 16:44 WG2095840 m&p-Xylenes U 0.430 2.00 1 07/16/2023 16:44 WG2095840 Xylenes, Total U 0.174 3.00 1 07/16/2023 16:44 WG2095840 ethanol U 42.0 100 1 07/20/2023 23:37 WG2096917 3,3-Dimethyl-1-butanol U 4.51 100 1 07/20/2023 23:37 WG2096917 Ethyl tert-butyl ether U 0.101 1.00 1 07/16/2023 16:44 WG2095840 t-Amyl Alcohol U 4.90 50.0 1 07/16/2023 16:44 WG2095840 tert-Butyl alcohol U 4.06 5.00 1 07/20/2023 23:37 WG2096917 tert-Butyl Formate U 4.51 20.0 1 07/16/2023 16:44 WG2095840 tert-Amyl Methyl Ether U 0.195 1.00 1 07/16/2023 16:44 WG2095840 (S) Toluene-d8 103 80.0-120 07/16/2023 16:44 WG2095840 (S) Toluene-d8 101 80.0-120 07/20/2023 23:37 WG2096917 (S) 4-Bromofluorobenzene 99.2 77.0-126 07/16/2023 16:44 WG2095840 (S) 4-Bromofluorobenzene 101 77.0-126 07/20/2023 23:37 WG2096917 (S) 1,2-Dichloroethane-d4 113 70.0-130 07/16/2023 16:44 WG2095840 (S) 1,2-Dichloroethane-d4 119 70.0-130 07/20/2023 23:37 WG2096917 EDB / DBCP by Method 8011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Ethylene Dibromide U 0.00536 0.0200 1 07/21/2023 16:52 WG2098245 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:12 12 of 60 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:23 12 of 60 SAMPLE RESULTS - 04 L1635814 MW-5-20230711 Collected date/time: 07/11/23 17:20 Wet Chemistry by Method 3500Fe B-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Ferrous Iron 22.0 J T8 15.0 50.0 1 07/16/2023 16:10 WG2095725 Wet Chemistry by Method 9056A Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Nitrate 15000 T8 48.0 100 1 07/21/2023 17:03 WG2099142 Sulfate 1120 J 594 5000 1 07/21/2023 17:03 WG2099142 Wet Chemistry by Method 9060A Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time TOC (Total Organic Carbon)952 B J 102 1000 1 07/27/2023 17:52 WG2100976 Metals (ICP) by Method 6010D Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Iron 3110 18.0 100 1 07/23/2023 13:35 WG2096554 Volatile Organic Compounds (GC) by Method RSK175 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Methane U 2.91 10.0 1 07/18/2023 13:17 WG2096697 Volatile Organic Compounds (GC/MS) by Method 6200B-1997/6200B-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Acetone U 11.3 50.0 1 07/16/2023 19:18 WG2095840 Acrolein U 2.54 50.0 1 07/16/2023 19:18 WG2095840 Acrylonitrile U 0.671 10.0 1 07/16/2023 19:18 WG2095840 Benzene U 0.0941 1.00 1 07/16/2023 19:18 WG2095840 Bromobenzene U 0.118 1.00 1 07/16/2023 19:18 WG2095840 Bromodichloromethane U 0.136 1.00 1 07/16/2023 19:18 WG2095840 Bromoform U 0.129 1.00 1 07/16/2023 19:18 WG2095840 Bromomethane U 0.605 5.00 1 07/16/2023 19:18 WG2095840 n-Butylbenzene U 0.157 1.00 1 07/16/2023 19:18 WG2095840 sec-Butylbenzene U 0.125 1.00 1 07/16/2023 19:18 WG2095840 tert-Butylbenzene U 0.127 1.00 1 07/16/2023 19:18 WG2095840 Carbon tetrachloride U 0.128 1.00 1 07/16/2023 19:18 WG2095840 Chlorobenzene U 0.116 1.00 1 07/16/2023 19:18 WG2095840 Chlorodibromomethane U 0.140 1.00 1 07/16/2023 19:18 WG2095840 Chloroethane U 0.192 5.00 1 07/16/2023 19:18 WG2095840 Chloroform 0.225 J 0.111 5.00 1 07/16/2023 19:18 WG2095840 Chloromethane U 0.960 2.50 1 07/16/2023 19:18 WG2095840 2-Chlorotoluene U 0.106 1.00 1 07/16/2023 19:18 WG2095840 4-Chlorotoluene U 0.114 1.00 1 07/16/2023 19:18 WG2095840 1,2-Dibromo-3-Chloropropane U 0.276 5.00 1 07/16/2023 19:18 WG2095840 1,2-Dibromoethane U 0.126 1.00 1 07/16/2023 19:18 WG2095840 Dibromomethane U 0.122 1.00 1 07/16/2023 19:18 WG2095840 1,2-Dichlorobenzene U 0.107 1.00 1 07/16/2023 19:18 WG2095840 1,3-Dichlorobenzene U 0.110 1.00 1 07/16/2023 19:18 WG2095840 1,4-Dichlorobenzene U 0.120 1.00 1 07/16/2023 19:18 WG2095840 Dichlorodifluoromethane U 0.374 5.00 1 07/16/2023 19:18 WG2095840 1,1-Dichloroethane U 0.100 1.00 1 07/16/2023 19:18 WG2095840 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:12 13 of 60 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:23 13 of 60 SAMPLE RESULTS - 04 L1635814 MW-5-20230711 Collected date/time: 07/11/23 17:20 Volatile Organic Compounds (GC/MS) by Method 6200B-1997/6200B-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time 1,2-Dichloroethane U 0.0819 1.00 1 07/16/2023 19:18 WG2095840 1,1-Dichloroethene U 0.188 1.00 1 07/16/2023 19:18 WG2095840 cis-1,2-Dichloroethene U 0.126 1.00 1 07/16/2023 19:18 WG2095840 trans-1,2-Dichloroethene U 0.149 1.00 1 07/16/2023 19:18 WG2095840 1,2-Dichloropropane U 0.149 1.00 1 07/16/2023 19:18 WG2095840 1,1-Dichloropropene U 0.142 1.00 1 07/16/2023 19:18 WG2095840 1,3-Dichloropropane U 0.110 1.00 1 07/16/2023 19:18 WG2095840 2,2-Dichloropropane U 0.161 1.00 1 07/16/2023 19:18 WG2095840 Di-isopropyl ether U 0.105 1.00 1 07/16/2023 19:18 WG2095840 Ethylbenzene U 0.137 1.00 1 07/16/2023 19:18 WG2095840 Hexachloro-1,3-butadiene U 0.337 1.00 1 07/16/2023 19:18 WG2095840 Isopropylbenzene U 0.105 1.00 1 07/16/2023 19:18 WG2095840 p-Isopropyltoluene U 0.120 1.00 1 07/16/2023 19:18 WG2095840 2-Butanone (MEK)U 1.19 10.0 1 07/16/2023 19:18 WG2095840 Methylene Chloride U 0.430 5.00 1 07/16/2023 19:18 WG2095840 4-Methyl-2-pentanone (MIBK)U 0.478 10.0 1 07/16/2023 19:18 WG2095840 Methyl tert-butyl ether U 0.101 1.00 1 07/16/2023 19:18 WG2095840 Naphthalene U 1.00 5.00 1 07/16/2023 19:18 WG2095840 n-Propylbenzene U 0.0993 1.00 1 07/16/2023 19:18 WG2095840 Styrene U 0.118 1.00 1 07/16/2023 19:18 WG2095840 1,1,1,2-Tetrachloroethane U 0.147 1.00 1 07/16/2023 19:18 WG2095840 1,1,2,2-Tetrachloroethane U 0.133 1.00 1 07/16/2023 19:18 WG2095840 Tetrachloroethene U 0.300 1.00 1 07/16/2023 19:18 WG2095840 Toluene U 0.278 1.00 1 07/16/2023 19:18 WG2095840 1,2,3-Trichlorobenzene U 0.230 1.00 1 07/16/2023 19:18 WG2095840 1,2,4-Trichlorobenzene U 0.481 1.00 1 07/16/2023 19:18 WG2095840 1,1,1-Trichloroethane U 0.149 1.00 1 07/16/2023 19:18 WG2095840 1,1,2-Trichloroethane U 0.158 1.00 1 07/16/2023 19:18 WG2095840 Trichloroethene U 0.190 1.00 1 07/16/2023 19:18 WG2095840 Trichlorofluoromethane U 0.160 5.00 1 07/16/2023 19:18 WG2095840 1,2,3-Trichloropropane U 0.237 2.50 1 07/16/2023 19:18 WG2095840 1,2,4-Trimethylbenzene U 0.322 1.00 1 07/16/2023 19:18 WG2095840 1,3,5-Trimethylbenzene U 0.104 1.00 1 07/16/2023 19:18 WG2095840 Vinyl chloride U 0.234 1.00 1 07/16/2023 19:18 WG2095840 o-Xylene U 0.174 1.00 1 07/16/2023 19:18 WG2095840 m&p-Xylenes U 0.430 2.00 1 07/16/2023 19:18 WG2095840 Xylenes, Total U 0.174 3.00 1 07/16/2023 19:18 WG2095840 ethanol U 42.0 100 1 07/20/2023 23:57 WG2096917 3,3-Dimethyl-1-butanol U 4.51 100 1 07/20/2023 23:57 WG2096917 Ethyl tert-butyl ether U 0.101 1.00 1 07/16/2023 19:18 WG2095840 t-Amyl Alcohol U 4.90 50.0 1 07/16/2023 19:18 WG2095840 tert-Butyl alcohol U 4.06 5.00 1 07/20/2023 23:57 WG2096917 tert-Butyl Formate U 4.51 20.0 1 07/16/2023 19:18 WG2095840 tert-Amyl Methyl Ether U 0.195 1.00 1 07/16/2023 19:18 WG2095840 (S) Toluene-d8 103 80.0-120 07/16/2023 19:18 WG2095840 (S) Toluene-d8 101 80.0-120 07/20/2023 23:57 WG2096917 (S) 4-Bromofluorobenzene 96.6 77.0-126 07/16/2023 19:18 WG2095840 (S) 4-Bromofluorobenzene 101 77.0-126 07/20/2023 23:57 WG2096917 (S) 1,2-Dichloroethane-d4 110 70.0-130 07/16/2023 19:18 WG2095840 (S) 1,2-Dichloroethane-d4 118 70.0-130 07/20/2023 23:57 WG2096917 EDB / DBCP by Method 8011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Ethylene Dibromide U 0.00574 0.0214 1.07 07/21/2023 17:06 WG2098245 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:12 14 of 60 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:23 14 of 60 SAMPLE RESULTS - 05 L1635814 MW-6-20230712 Collected date/time: 07/12/23 11:10 Wet Chemistry by Method 3500Fe B-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Ferrous Iron U T8 15.0 50.0 1 07/16/2023 16:10 WG2095725 Wet Chemistry by Method 9056A Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Nitrate 923 T8 48.0 100 1 07/21/2023 17:30 WG2099142 Sulfate 15400 594 5000 1 07/21/2023 17:30 WG2099142 Wet Chemistry by Method 9060A Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time TOC (Total Organic Carbon)591 B J 102 1000 1 07/27/2023 18:04 WG2100976 Metals (ICP) by Method 6010D Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Iron 2300 18.0 100 1 07/23/2023 13:19 WG2096554 Volatile Organic Compounds (GC) by Method RSK175 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Methane U 2.91 10.0 1 07/18/2023 13:20 WG2096697 Volatile Organic Compounds (GC/MS) by Method 6200B-1997/6200B-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Acetone U J3 11.3 50.0 1 07/16/2023 19:37 WG2095840 Acrolein U 2.54 50.0 1 07/16/2023 19:37 WG2095840 Acrylonitrile U 0.671 10.0 1 07/16/2023 19:37 WG2095840 Benzene U 0.0941 1.00 1 07/16/2023 19:37 WG2095840 Bromobenzene U 0.118 1.00 1 07/16/2023 19:37 WG2095840 Bromodichloromethane U 0.136 1.00 1 07/16/2023 19:37 WG2095840 Bromoform U 0.129 1.00 1 07/16/2023 19:37 WG2095840 Bromomethane U 0.605 5.00 1 07/16/2023 19:37 WG2095840 n-Butylbenzene U 0.157 1.00 1 07/16/2023 19:37 WG2095840 sec-Butylbenzene U 0.125 1.00 1 07/16/2023 19:37 WG2095840 tert-Butylbenzene U 0.127 1.00 1 07/16/2023 19:37 WG2095840 Carbon tetrachloride U 0.128 1.00 1 07/16/2023 19:37 WG2095840 Chlorobenzene U 0.116 1.00 1 07/16/2023 19:37 WG2095840 Chlorodibromomethane U 0.140 1.00 1 07/16/2023 19:37 WG2095840 Chloroethane U 0.192 5.00 1 07/16/2023 19:37 WG2095840 Chloroform U 0.111 5.00 1 07/16/2023 19:37 WG2095840 Chloromethane U 0.960 2.50 1 07/16/2023 19:37 WG2095840 2-Chlorotoluene U 0.106 1.00 1 07/16/2023 19:37 WG2095840 4-Chlorotoluene U 0.114 1.00 1 07/16/2023 19:37 WG2095840 1,2-Dibromo-3-Chloropropane U 0.276 5.00 1 07/16/2023 19:37 WG2095840 1,2-Dibromoethane U 0.126 1.00 1 07/16/2023 19:37 WG2095840 Dibromomethane U 0.122 1.00 1 07/16/2023 19:37 WG2095840 1,2-Dichlorobenzene U 0.107 1.00 1 07/16/2023 19:37 WG2095840 1,3-Dichlorobenzene U 0.110 1.00 1 07/16/2023 19:37 WG2095840 1,4-Dichlorobenzene U 0.120 1.00 1 07/16/2023 19:37 WG2095840 Dichlorodifluoromethane U 0.374 5.00 1 07/16/2023 19:37 WG2095840 1,1-Dichloroethane U 0.100 1.00 1 07/16/2023 19:37 WG2095840 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:12 15 of 60 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:23 15 of 60 SAMPLE RESULTS - 05 L1635814 MW-6-20230712 Collected date/time: 07/12/23 11:10 Volatile Organic Compounds (GC/MS) by Method 6200B-1997/6200B-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time 1,2-Dichloroethane U 0.0819 1.00 1 07/16/2023 19:37 WG2095840 1,1-Dichloroethene U 0.188 1.00 1 07/16/2023 19:37 WG2095840 cis-1,2-Dichloroethene U 0.126 1.00 1 07/16/2023 19:37 WG2095840 trans-1,2-Dichloroethene U 0.149 1.00 1 07/16/2023 19:37 WG2095840 1,2-Dichloropropane U 0.149 1.00 1 07/16/2023 19:37 WG2095840 1,1-Dichloropropene U 0.142 1.00 1 07/16/2023 19:37 WG2095840 1,3-Dichloropropane U 0.110 1.00 1 07/16/2023 19:37 WG2095840 2,2-Dichloropropane U 0.161 1.00 1 07/16/2023 19:37 WG2095840 Di-isopropyl ether U 0.105 1.00 1 07/16/2023 19:37 WG2095840 Ethylbenzene U 0.137 1.00 1 07/16/2023 19:37 WG2095840 Hexachloro-1,3-butadiene U 0.337 1.00 1 07/16/2023 19:37 WG2095840 Isopropylbenzene U 0.105 1.00 1 07/16/2023 19:37 WG2095840 p-Isopropyltoluene U 0.120 1.00 1 07/16/2023 19:37 WG2095840 2-Butanone (MEK)U 1.19 10.0 1 07/16/2023 19:37 WG2095840 Methylene Chloride U 0.430 5.00 1 07/16/2023 19:37 WG2095840 4-Methyl-2-pentanone (MIBK)U 0.478 10.0 1 07/16/2023 19:37 WG2095840 Methyl tert-butyl ether U 0.101 1.00 1 07/16/2023 19:37 WG2095840 Naphthalene U 1.00 5.00 1 07/16/2023 19:37 WG2095840 n-Propylbenzene U 0.0993 1.00 1 07/16/2023 19:37 WG2095840 Styrene U 0.118 1.00 1 07/16/2023 19:37 WG2095840 1,1,1,2-Tetrachloroethane U 0.147 1.00 1 07/16/2023 19:37 WG2095840 1,1,2,2-Tetrachloroethane U 0.133 1.00 1 07/16/2023 19:37 WG2095840 Tetrachloroethene U 0.300 1.00 1 07/16/2023 19:37 WG2095840 Toluene U 0.278 1.00 1 07/16/2023 19:37 WG2095840 1,2,3-Trichlorobenzene U 0.230 1.00 1 07/16/2023 19:37 WG2095840 1,2,4-Trichlorobenzene U 0.481 1.00 1 07/16/2023 19:37 WG2095840 1,1,1-Trichloroethane U 0.149 1.00 1 07/16/2023 19:37 WG2095840 1,1,2-Trichloroethane U 0.158 1.00 1 07/16/2023 19:37 WG2095840 Trichloroethene U 0.190 1.00 1 07/16/2023 19:37 WG2095840 Trichlorofluoromethane U 0.160 5.00 1 07/16/2023 19:37 WG2095840 1,2,3-Trichloropropane U 0.237 2.50 1 07/16/2023 19:37 WG2095840 1,2,4-Trimethylbenzene U 0.322 1.00 1 07/16/2023 19:37 WG2095840 1,3,5-Trimethylbenzene U 0.104 1.00 1 07/16/2023 19:37 WG2095840 Vinyl chloride U 0.234 1.00 1 07/16/2023 19:37 WG2095840 o-Xylene U 0.174 1.00 1 07/16/2023 19:37 WG2095840 m&p-Xylenes U 0.430 2.00 1 07/16/2023 19:37 WG2095840 Xylenes, Total U 0.174 3.00 1 07/16/2023 19:37 WG2095840 ethanol U 42.0 100 1 07/21/2023 00:18 WG2096917 3,3-Dimethyl-1-butanol U 4.51 100 1 07/21/2023 00:18 WG2096917 Ethyl tert-butyl ether U 0.101 1.00 1 07/16/2023 19:37 WG2095840 t-Amyl Alcohol U 4.90 50.0 1 07/16/2023 19:37 WG2095840 tert-Butyl alcohol U 4.06 5.00 1 07/21/2023 00:18 WG2096917 tert-Butyl Formate U 4.51 20.0 1 07/16/2023 19:37 WG2095840 tert-Amyl Methyl Ether U 0.195 1.00 1 07/16/2023 19:37 WG2095840 (S) Toluene-d8 103 80.0-120 07/16/2023 19:37 WG2095840 (S) Toluene-d8 99.1 80.0-120 07/21/2023 00:18 WG2096917 (S) 4-Bromofluorobenzene 97.3 77.0-126 07/16/2023 19:37 WG2095840 (S) 4-Bromofluorobenzene 98.8 77.0-126 07/21/2023 00:18 WG2096917 (S) 1,2-Dichloroethane-d4 110 70.0-130 07/16/2023 19:37 WG2095840 (S) 1,2-Dichloroethane-d4 118 70.0-130 07/21/2023 00:18 WG2096917 EDB / DBCP by Method 8011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Ethylene Dibromide U 0.00536 0.0200 1 07/21/2023 12:14 WG2098245 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:12 16 of 60 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:23 16 of 60 SAMPLE RESULTS - 06 L1635814 EB-02-20230712 Collected date/time: 07/12/23 12:25 Volatile Organic Compounds (GC/MS) by Method 6200B-1997/6200B-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Acetone U 11.3 50.0 1 07/16/2023 17:03 WG2095840 Acrolein U 2.54 50.0 1 07/16/2023 17:03 WG2095840 Acrylonitrile U 0.671 10.0 1 07/16/2023 17:03 WG2095840 Benzene U 0.0941 1.00 1 07/16/2023 17:03 WG2095840 Bromobenzene U 0.118 1.00 1 07/16/2023 17:03 WG2095840 Bromodichloromethane U 0.136 1.00 1 07/16/2023 17:03 WG2095840 Bromoform U 0.129 1.00 1 07/16/2023 17:03 WG2095840 Bromomethane U 0.605 5.00 1 07/16/2023 17:03 WG2095840 n-Butylbenzene U 0.157 1.00 1 07/16/2023 17:03 WG2095840 sec-Butylbenzene U 0.125 1.00 1 07/16/2023 17:03 WG2095840 tert-Butylbenzene U 0.127 1.00 1 07/16/2023 17:03 WG2095840 Carbon tetrachloride U 0.128 1.00 1 07/16/2023 17:03 WG2095840 Chlorobenzene U 0.116 1.00 1 07/16/2023 17:03 WG2095840 Chlorodibromomethane U 0.140 1.00 1 07/16/2023 17:03 WG2095840 Chloroethane U 0.192 5.00 1 07/16/2023 17:03 WG2095840 Chloroform 1.48 J 0.111 5.00 1 07/16/2023 17:03 WG2095840 Chloromethane U 0.960 2.50 1 07/16/2023 17:03 WG2095840 2-Chlorotoluene U 0.106 1.00 1 07/16/2023 17:03 WG2095840 4-Chlorotoluene U 0.114 1.00 1 07/16/2023 17:03 WG2095840 1,2-Dibromo-3-Chloropropane U 0.276 5.00 1 07/16/2023 17:03 WG2095840 1,2-Dibromoethane U 0.126 1.00 1 07/16/2023 17:03 WG2095840 Dibromomethane U 0.122 1.00 1 07/16/2023 17:03 WG2095840 1,2-Dichlorobenzene U 0.107 1.00 1 07/16/2023 17:03 WG2095840 1,3-Dichlorobenzene U 0.110 1.00 1 07/16/2023 17:03 WG2095840 1,4-Dichlorobenzene U 0.120 1.00 1 07/16/2023 17:03 WG2095840 Dichlorodifluoromethane U 0.374 5.00 1 07/16/2023 17:03 WG2095840 1,1-Dichloroethane U 0.100 1.00 1 07/16/2023 17:03 WG2095840 1,2-Dichloroethane U 0.0819 1.00 1 07/16/2023 17:03 WG2095840 1,1-Dichloroethene U 0.188 1.00 1 07/16/2023 17:03 WG2095840 cis-1,2-Dichloroethene U 0.126 1.00 1 07/16/2023 17:03 WG2095840 trans-1,2-Dichloroethene U 0.149 1.00 1 07/16/2023 17:03 WG2095840 1,2-Dichloropropane U 0.149 1.00 1 07/16/2023 17:03 WG2095840 1,1-Dichloropropene U 0.142 1.00 1 07/16/2023 17:03 WG2095840 1,3-Dichloropropane U 0.110 1.00 1 07/16/2023 17:03 WG2095840 2,2-Dichloropropane U 0.161 1.00 1 07/16/2023 17:03 WG2095840 Di-isopropyl ether U 0.105 1.00 1 07/16/2023 17:03 WG2095840 Ethylbenzene U 0.137 1.00 1 07/16/2023 17:03 WG2095840 Hexachloro-1,3-butadiene U 0.337 1.00 1 07/16/2023 17:03 WG2095840 Isopropylbenzene U 0.105 1.00 1 07/16/2023 17:03 WG2095840 p-Isopropyltoluene U 0.120 1.00 1 07/16/2023 17:03 WG2095840 2-Butanone (MEK)U 1.19 10.0 1 07/16/2023 17:03 WG2095840 Methylene Chloride U 0.430 5.00 1 07/16/2023 17:03 WG2095840 4-Methyl-2-pentanone (MIBK)U 0.478 10.0 1 07/16/2023 17:03 WG2095840 Methyl tert-butyl ether U 0.101 1.00 1 07/16/2023 17:03 WG2095840 Naphthalene U 1.00 5.00 1 07/16/2023 17:03 WG2095840 n-Propylbenzene U 0.0993 1.00 1 07/16/2023 17:03 WG2095840 Styrene U 0.118 1.00 1 07/16/2023 17:03 WG2095840 1,1,1,2-Tetrachloroethane U 0.147 1.00 1 07/16/2023 17:03 WG2095840 1,1,2,2-Tetrachloroethane U 0.133 1.00 1 07/16/2023 17:03 WG2095840 Tetrachloroethene U 0.300 1.00 1 07/16/2023 17:03 WG2095840 Toluene U 0.278 1.00 1 07/16/2023 17:03 WG2095840 1,2,3-Trichlorobenzene U 0.230 1.00 1 07/16/2023 17:03 WG2095840 1,2,4-Trichlorobenzene U 0.481 1.00 1 07/16/2023 17:03 WG2095840 1,1,1-Trichloroethane U 0.149 1.00 1 07/16/2023 17:03 WG2095840 1,1,2-Trichloroethane U 0.158 1.00 1 07/16/2023 17:03 WG2095840 Trichloroethene U 0.190 1.00 1 07/16/2023 17:03 WG2095840 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:12 17 of 60 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:23 17 of 60 SAMPLE RESULTS - 06 L1635814 EB-02-20230712 Collected date/time: 07/12/23 12:25 Volatile Organic Compounds (GC/MS) by Method 6200B-1997/6200B-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Trichlorofluoromethane U 0.160 5.00 1 07/16/2023 17:03 WG2095840 1,2,3-Trichloropropane U 0.237 2.50 1 07/16/2023 17:03 WG2095840 1,2,4-Trimethylbenzene U 0.322 1.00 1 07/16/2023 17:03 WG2095840 1,3,5-Trimethylbenzene U 0.104 1.00 1 07/16/2023 17:03 WG2095840 Vinyl chloride U 0.234 1.00 1 07/16/2023 17:03 WG2095840 o-Xylene U 0.174 1.00 1 07/16/2023 17:03 WG2095840 m&p-Xylenes U 0.430 2.00 1 07/16/2023 17:03 WG2095840 Xylenes, Total U 0.174 3.00 1 07/16/2023 17:03 WG2095840 ethanol U 42.0 100 1 07/21/2023 00:38 WG2096917 3,3-Dimethyl-1-butanol U 4.51 100 1 07/21/2023 00:38 WG2096917 Ethyl tert-butyl ether U 0.101 1.00 1 07/16/2023 17:03 WG2095840 t-Amyl Alcohol U 4.90 50.0 1 07/16/2023 17:03 WG2095840 tert-Butyl alcohol U 4.06 5.00 1 07/21/2023 00:38 WG2096917 tert-Butyl Formate U 4.51 20.0 1 07/16/2023 17:03 WG2095840 tert-Amyl Methyl Ether U 0.195 1.00 1 07/16/2023 17:03 WG2095840 (S) Toluene-d8 105 80.0-120 07/16/2023 17:03 WG2095840 (S) Toluene-d8 101 80.0-120 07/21/2023 00:38 WG2096917 (S) 4-Bromofluorobenzene 98.8 77.0-126 07/16/2023 17:03 WG2095840 (S) 4-Bromofluorobenzene 99.6 77.0-126 07/21/2023 00:38 WG2096917 (S) 1,2-Dichloroethane-d4 108 70.0-130 07/16/2023 17:03 WG2095840 (S) 1,2-Dichloroethane-d4 118 70.0-130 07/21/2023 00:38 WG2096917 EDB / DBCP by Method 8011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Ethylene Dibromide U 0.00536 0.0200 1 07/21/2023 17:19 WG2098245 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:12 18 of 60 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:23 18 of 60 SAMPLE RESULTS - 07 L1635814 MW-7-20230712 Collected date/time: 07/12/23 15:45 Wet Chemistry by Method 3500Fe B-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Ferrous Iron 9920 T8 150 500 10 07/16/2023 16:11 WG2095725 Wet Chemistry by Method 9056A Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Nitrate 56.2 J T8 48.0 100 1 07/21/2023 18:51 WG2099142 Sulfate U 594 5000 1 07/21/2023 18:51 WG2099142 Wet Chemistry by Method 9060A Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time TOC (Total Organic Carbon)11400 102 1000 1 07/27/2023 19:01 WG2100976 Metals (ICP) by Method 6010D Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Iron 8910 18.0 100 1 07/23/2023 13:38 WG2096554 Volatile Organic Compounds (GC) by Method RSK175 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Methane 249 2.91 10.0 1 07/18/2023 13:23 WG2096697 Volatile Organic Compounds (GC/MS) by Method 6200B-1997/6200B-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Acetone U 565 2500 50 07/16/2023 21:13 WG2095840 Acrolein U 127 2500 50 07/16/2023 21:13 WG2095840 Acrylonitrile U 33.6 500 50 07/16/2023 21:13 WG2095840 Benzene 6420 4.71 50.0 50 07/16/2023 21:13 WG2095840 Bromobenzene U 5.90 50.0 50 07/16/2023 21:13 WG2095840 Bromodichloromethane U 6.80 50.0 50 07/16/2023 21:13 WG2095840 Bromoform U 6.45 50.0 50 07/16/2023 21:13 WG2095840 Bromomethane U 30.3 250 50 07/16/2023 21:13 WG2095840 n-Butylbenzene 14.3 J 7.85 50.0 50 07/16/2023 21:13 WG2095840 sec-Butylbenzene 6.88 J 6.25 50.0 50 07/16/2023 21:13 WG2095840 tert-Butylbenzene U 6.35 50.0 50 07/16/2023 21:13 WG2095840 Carbon tetrachloride U 6.40 50.0 50 07/16/2023 21:13 WG2095840 Chlorobenzene U 5.80 50.0 50 07/16/2023 21:13 WG2095840 Chlorodibromomethane U 7.00 50.0 50 07/16/2023 21:13 WG2095840 Chloroethane U 9.60 250 50 07/16/2023 21:13 WG2095840 Chloroform U 5.55 250 50 07/16/2023 21:13 WG2095840 Chloromethane U 48.0 125 50 07/16/2023 21:13 WG2095840 2-Chlorotoluene U 5.30 50.0 50 07/16/2023 21:13 WG2095840 4-Chlorotoluene U 5.70 50.0 50 07/16/2023 21:13 WG2095840 1,2-Dibromo-3-Chloropropane U 13.8 250 50 07/16/2023 21:13 WG2095840 1,2-Dibromoethane U 6.30 50.0 50 07/16/2023 21:13 WG2095840 Dibromomethane U 6.10 50.0 50 07/16/2023 21:13 WG2095840 1,2-Dichlorobenzene U 5.35 50.0 50 07/16/2023 21:13 WG2095840 1,3-Dichlorobenzene U 5.50 50.0 50 07/16/2023 21:13 WG2095840 1,4-Dichlorobenzene U 6.00 50.0 50 07/16/2023 21:13 WG2095840 Dichlorodifluoromethane U 18.7 250 50 07/16/2023 21:13 WG2095840 1,1-Dichloroethane U 5.00 50.0 50 07/16/2023 21:13 WG2095840 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:12 19 of 60 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:23 19 of 60 SAMPLE RESULTS - 07 L1635814 MW-7-20230712 Collected date/time: 07/12/23 15:45 Volatile Organic Compounds (GC/MS) by Method 6200B-1997/6200B-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time 1,2-Dichloroethane 91.8 4.09 50.0 50 07/16/2023 21:13 WG2095840 1,1-Dichloroethene U 9.40 50.0 50 07/16/2023 21:13 WG2095840 cis-1,2-Dichloroethene U 6.30 50.0 50 07/16/2023 21:13 WG2095840 trans-1,2-Dichloroethene U 7.45 50.0 50 07/16/2023 21:13 WG2095840 1,2-Dichloropropane U 7.45 50.0 50 07/16/2023 21:13 WG2095840 1,1-Dichloropropene U 7.10 50.0 50 07/16/2023 21:13 WG2095840 1,3-Dichloropropane U 5.50 50.0 50 07/16/2023 21:13 WG2095840 2,2-Dichloropropane U 8.05 50.0 50 07/16/2023 21:13 WG2095840 Di-isopropyl ether 29.6 J 5.25 50.0 50 07/16/2023 21:13 WG2095840 Ethylbenzene 2010 6.85 50.0 50 07/16/2023 21:13 WG2095840 Hexachloro-1,3-butadiene U 16.9 50.0 50 07/16/2023 21:13 WG2095840 Isopropylbenzene 82.2 5.25 50.0 50 07/16/2023 21:13 WG2095840 p-Isopropyltoluene U 6.00 50.0 50 07/16/2023 21:13 WG2095840 2-Butanone (MEK)U 59.5 500 50 07/16/2023 21:13 WG2095840 Methylene Chloride U 21.5 250 50 07/16/2023 21:13 WG2095840 4-Methyl-2-pentanone (MIBK)U 23.9 500 50 07/16/2023 21:13 WG2095840 Methyl tert-butyl ether 2470 5.05 50.0 50 07/16/2023 21:13 WG2095840 Naphthalene 454 50.0 250 50 07/16/2023 21:13 WG2095840 n-Propylbenzene 163 4.97 50.0 50 07/16/2023 21:13 WG2095840 Styrene 6.54 J 5.90 50.0 50 07/16/2023 21:13 WG2095840 1,1,1,2-Tetrachloroethane U 7.35 50.0 50 07/16/2023 21:13 WG2095840 1,1,2,2-Tetrachloroethane U 6.65 50.0 50 07/16/2023 21:13 WG2095840 Tetrachloroethene U 15.0 50.0 50 07/16/2023 21:13 WG2095840 Toluene 85.5 13.9 50.0 50 07/16/2023 21:13 WG2095840 1,2,3-Trichlorobenzene U 11.5 50.0 50 07/16/2023 21:13 WG2095840 1,2,4-Trichlorobenzene U 24.1 50.0 50 07/16/2023 21:13 WG2095840 1,1,1-Trichloroethane U 7.45 50.0 50 07/16/2023 21:13 WG2095840 1,1,2-Trichloroethane U 7.90 50.0 50 07/16/2023 21:13 WG2095840 Trichloroethene U 9.50 50.0 50 07/16/2023 21:13 WG2095840 Trichlorofluoromethane U 8.00 250 50 07/16/2023 21:13 WG2095840 1,2,3-Trichloropropane U 11.9 125 50 07/16/2023 21:13 WG2095840 1,2,4-Trimethylbenzene 582 16.1 50.0 50 07/16/2023 21:13 WG2095840 1,3,5-Trimethylbenzene 199 5.20 50.0 50 07/16/2023 21:13 WG2095840 Vinyl chloride U 11.7 50.0 50 07/16/2023 21:13 WG2095840 o-Xylene 359 8.70 50.0 50 07/16/2023 21:13 WG2095840 m&p-Xylenes 1000 21.5 100 50 07/16/2023 21:13 WG2095840 Xylenes, Total 1360 8.70 150 50 07/16/2023 21:13 WG2095840 ethanol U 2100 5000 50 07/21/2023 03:42 WG2096917 3,3-Dimethyl-1-butanol U 226 5000 50 07/21/2023 03:42 WG2096917 Ethyl tert-butyl ether U 5.05 50.0 50 07/16/2023 21:13 WG2095840 t-Amyl Alcohol 1030 J 245 2500 50 07/16/2023 21:13 WG2095840 tert-Butyl alcohol U 203 250 50 07/21/2023 03:42 WG2096917 tert-Butyl Formate U 226 1000 50 07/16/2023 21:13 WG2095840 tert-Amyl Methyl Ether U 9.75 50.0 50 07/16/2023 21:13 WG2095840 (S) Toluene-d8 102 80.0-120 07/16/2023 21:13 WG2095840 (S) Toluene-d8 96.5 80.0-120 07/21/2023 03:42 WG2096917 (S) 4-Bromofluorobenzene 98.4 77.0-126 07/16/2023 21:13 WG2095840 (S) 4-Bromofluorobenzene 98.4 77.0-126 07/21/2023 03:42 WG2096917 (S) 1,2-Dichloroethane-d4 110 70.0-130 07/16/2023 21:13 WG2095840 (S) 1,2-Dichloroethane-d4 118 70.0-130 07/21/2023 03:42 WG2096917 EDB / DBCP by Method 8011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Ethylene Dibromide 0.288 0.00541 0.0202 1.01 07/21/2023 17:32 WG2098245 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:12 20 of 60 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:23 20 of 60 SAMPLE RESULTS - 08 L1635814 MW-2-20230712 Collected date/time: 07/12/23 18:10 Wet Chemistry by Method 3500Fe B-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Ferrous Iron 14400 T8 150 500 10 07/16/2023 16:11 WG2095725 Wet Chemistry by Method 9056A Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Nitrate 5460 T8 48.0 100 1 07/21/2023 19:05 WG2099142 Sulfate U 594 5000 1 07/21/2023 19:05 WG2099142 Wet Chemistry by Method 9060A Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time TOC (Total Organic Carbon)39700 102 1000 1 07/27/2023 19:20 WG2100976 Metals (ICP) by Method 6010D Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Iron 12600 18.0 100 1 07/23/2023 13:46 WG2096554 Volatile Organic Compounds (GC) by Method RSK175 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Methane 246 2.91 10.0 1 07/18/2023 13:27 WG2096697 Volatile Organic Compounds (GC/MS) by Method 6200B-1997/6200B-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Acetone U 2260 10000 200 07/16/2023 21:32 WG2095840 Acrolein U 508 10000 200 07/16/2023 21:32 WG2095840 Acrylonitrile U 134 2000 200 07/16/2023 21:32 WG2095840 Benzene 11500 18.8 200 200 07/16/2023 21:32 WG2095840 Bromobenzene U 23.6 200 200 07/16/2023 21:32 WG2095840 Bromodichloromethane U 27.2 200 200 07/16/2023 21:32 WG2095840 Bromoform U 25.8 200 200 07/16/2023 21:32 WG2095840 Bromomethane U 121 1000 200 07/16/2023 21:32 WG2095840 n-Butylbenzene U 31.4 200 200 07/16/2023 21:32 WG2095840 sec-Butylbenzene U 25.0 200 200 07/16/2023 21:32 WG2095840 tert-Butylbenzene U 25.4 200 200 07/16/2023 21:32 WG2095840 Carbon tetrachloride U 25.6 200 200 07/16/2023 21:32 WG2095840 Chlorobenzene U 23.2 200 200 07/16/2023 21:32 WG2095840 Chlorodibromomethane U 28.0 200 200 07/16/2023 21:32 WG2095840 Chloroethane U 38.4 1000 200 07/16/2023 21:32 WG2095840 Chloroform U 22.2 1000 200 07/16/2023 21:32 WG2095840 Chloromethane U 192 500 200 07/16/2023 21:32 WG2095840 2-Chlorotoluene U 21.2 200 200 07/16/2023 21:32 WG2095840 4-Chlorotoluene U 22.8 200 200 07/16/2023 21:32 WG2095840 1,2-Dibromo-3-Chloropropane U 55.2 1000 200 07/16/2023 21:32 WG2095840 1,2-Dibromoethane U 25.2 200 200 07/16/2023 21:32 WG2095840 Dibromomethane U 24.4 200 200 07/16/2023 21:32 WG2095840 1,2-Dichlorobenzene U 21.4 200 200 07/16/2023 21:32 WG2095840 1,3-Dichlorobenzene U 22.0 200 200 07/16/2023 21:32 WG2095840 1,4-Dichlorobenzene U 24.0 200 200 07/16/2023 21:32 WG2095840 Dichlorodifluoromethane U 74.8 1000 200 07/16/2023 21:32 WG2095840 1,1-Dichloroethane U 20.0 200 200 07/16/2023 21:32 WG2095840 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:12 21 of 60 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:23 21 of 60 SAMPLE RESULTS - 08 L1635814 MW-2-20230712 Collected date/time: 07/12/23 18:10 Volatile Organic Compounds (GC/MS) by Method 6200B-1997/6200B-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time 1,2-Dichloroethane 142 J 16.4 200 200 07/16/2023 21:32 WG2095840 1,1-Dichloroethene U 37.6 200 200 07/16/2023 21:32 WG2095840 cis-1,2-Dichloroethene U 25.2 200 200 07/16/2023 21:32 WG2095840 trans-1,2-Dichloroethene U 29.8 200 200 07/16/2023 21:32 WG2095840 1,2-Dichloropropane U 29.8 200 200 07/16/2023 21:32 WG2095840 1,1-Dichloropropene U 28.4 200 200 07/16/2023 21:32 WG2095840 1,3-Dichloropropane U 22.0 200 200 07/16/2023 21:32 WG2095840 2,2-Dichloropropane U 32.2 200 200 07/16/2023 21:32 WG2095840 Di-isopropyl ether 46.3 J 21.0 200 200 07/16/2023 21:32 WG2095840 Ethylbenzene 2890 27.4 200 200 07/16/2023 21:32 WG2095840 Hexachloro-1,3-butadiene U 67.4 200 200 07/16/2023 21:32 WG2095840 Isopropylbenzene 100 J 21.0 200 200 07/16/2023 21:32 WG2095840 p-Isopropyltoluene U 24.0 200 200 07/16/2023 21:32 WG2095840 2-Butanone (MEK)U 238 2000 200 07/16/2023 21:32 WG2095840 Methylene Chloride U 86.0 1000 200 07/16/2023 21:32 WG2095840 4-Methyl-2-pentanone (MIBK)U 95.6 2000 200 07/16/2023 21:32 WG2095840 Methyl tert-butyl ether 5050 20.2 200 200 07/16/2023 21:32 WG2095840 Naphthalene 638 J 200 1000 200 07/16/2023 21:32 WG2095840 n-Propylbenzene 229 19.9 200 200 07/16/2023 21:32 WG2095840 Styrene 51.7 J 23.6 200 200 07/16/2023 21:32 WG2095840 1,1,1,2-Tetrachloroethane U 29.4 200 200 07/16/2023 21:32 WG2095840 1,1,2,2-Tetrachloroethane U 26.6 200 200 07/16/2023 21:32 WG2095840 Tetrachloroethene U 60.0 200 200 07/16/2023 21:32 WG2095840 Toluene 339 55.6 200 200 07/16/2023 21:32 WG2095840 1,2,3-Trichlorobenzene U 46.0 200 200 07/16/2023 21:32 WG2095840 1,2,4-Trichlorobenzene U 96.2 200 200 07/16/2023 21:32 WG2095840 1,1,1-Trichloroethane U 29.8 200 200 07/16/2023 21:32 WG2095840 1,1,2-Trichloroethane U 31.6 200 200 07/16/2023 21:32 WG2095840 Trichloroethene U 38.0 200 200 07/16/2023 21:32 WG2095840 Trichlorofluoromethane U 32.0 1000 200 07/16/2023 21:32 WG2095840 1,2,3-Trichloropropane U 47.4 500 200 07/16/2023 21:32 WG2095840 1,2,4-Trimethylbenzene 1110 64.4 200 200 07/16/2023 21:32 WG2095840 1,3,5-Trimethylbenzene 281 20.8 200 200 07/16/2023 21:32 WG2095840 Vinyl chloride U 46.8 200 200 07/16/2023 21:32 WG2095840 o-Xylene 296 34.8 200 200 07/16/2023 21:32 WG2095840 m&p-Xylenes 2220 86.0 400 200 07/16/2023 21:32 WG2095840 Xylenes, Total 2520 34.8 600 200 07/16/2023 21:32 WG2095840 ethanol U 8400 20000 200 07/21/2023 04:03 WG2096917 3,3-Dimethyl-1-butanol U 902 20000 200 07/21/2023 04:03 WG2096917 Ethyl tert-butyl ether U 20.2 200 200 07/16/2023 21:32 WG2095840 t-Amyl Alcohol 14200 980 10000 200 07/16/2023 21:32 WG2095840 tert-Butyl alcohol 1510 812 1000 200 07/21/2023 04:03 WG2096917 tert-Butyl Formate U 902 4000 200 07/16/2023 21:32 WG2095840 tert-Amyl Methyl Ether U 39.0 200 200 07/16/2023 21:32 WG2095840 (S) Toluene-d8 103 80.0-120 07/16/2023 21:32 WG2095840 (S) Toluene-d8 99.1 80.0-120 07/21/2023 04:03 WG2096917 (S) 4-Bromofluorobenzene 101 77.0-126 07/16/2023 21:32 WG2095840 (S) 4-Bromofluorobenzene 99.8 77.0-126 07/21/2023 04:03 WG2096917 (S) 1,2-Dichloroethane-d4 111 70.0-130 07/16/2023 21:32 WG2095840 (S) 1,2-Dichloroethane-d4 119 70.0-130 07/21/2023 04:03 WG2096917 EDB / DBCP by Method 8011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Ethylene Dibromide 1.41 0.0268 0.100 5 07/24/2023 15:33 WG2098245 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:12 22 of 60 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:23 22 of 60 SAMPLE RESULTS - 09 L1635814 EB-03-20230713 Collected date/time: 07/13/23 08:30 Volatile Organic Compounds (GC/MS) by Method 6200B-1997/6200B-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Acetone U 11.3 50.0 1 07/16/2023 17:23 WG2095840 Acrolein U 2.54 50.0 1 07/16/2023 17:23 WG2095840 Acrylonitrile U 0.671 10.0 1 07/16/2023 17:23 WG2095840 Benzene U 0.0941 1.00 1 07/16/2023 17:23 WG2095840 Bromobenzene U 0.118 1.00 1 07/16/2023 17:23 WG2095840 Bromodichloromethane U 0.136 1.00 1 07/16/2023 17:23 WG2095840 Bromoform U 0.129 1.00 1 07/16/2023 17:23 WG2095840 Bromomethane U 0.605 5.00 1 07/16/2023 17:23 WG2095840 n-Butylbenzene U 0.157 1.00 1 07/16/2023 17:23 WG2095840 sec-Butylbenzene U 0.125 1.00 1 07/16/2023 17:23 WG2095840 tert-Butylbenzene U 0.127 1.00 1 07/16/2023 17:23 WG2095840 Carbon tetrachloride U 0.128 1.00 1 07/16/2023 17:23 WG2095840 Chlorobenzene U 0.116 1.00 1 07/16/2023 17:23 WG2095840 Chlorodibromomethane U 0.140 1.00 1 07/16/2023 17:23 WG2095840 Chloroethane U 0.192 5.00 1 07/16/2023 17:23 WG2095840 Chloroform 1.26 J 0.111 5.00 1 07/16/2023 17:23 WG2095840 Chloromethane U 0.960 2.50 1 07/16/2023 17:23 WG2095840 2-Chlorotoluene U 0.106 1.00 1 07/16/2023 17:23 WG2095840 4-Chlorotoluene U 0.114 1.00 1 07/16/2023 17:23 WG2095840 1,2-Dibromo-3-Chloropropane U 0.276 5.00 1 07/16/2023 17:23 WG2095840 1,2-Dibromoethane U 0.126 1.00 1 07/16/2023 17:23 WG2095840 Dibromomethane U 0.122 1.00 1 07/16/2023 17:23 WG2095840 1,2-Dichlorobenzene U 0.107 1.00 1 07/16/2023 17:23 WG2095840 1,3-Dichlorobenzene U 0.110 1.00 1 07/16/2023 17:23 WG2095840 1,4-Dichlorobenzene U 0.120 1.00 1 07/16/2023 17:23 WG2095840 Dichlorodifluoromethane U 0.374 5.00 1 07/16/2023 17:23 WG2095840 1,1-Dichloroethane U 0.100 1.00 1 07/16/2023 17:23 WG2095840 1,2-Dichloroethane U 0.0819 1.00 1 07/16/2023 17:23 WG2095840 1,1-Dichloroethene U 0.188 1.00 1 07/16/2023 17:23 WG2095840 cis-1,2-Dichloroethene U 0.126 1.00 1 07/16/2023 17:23 WG2095840 trans-1,2-Dichloroethene U 0.149 1.00 1 07/16/2023 17:23 WG2095840 1,2-Dichloropropane U 0.149 1.00 1 07/16/2023 17:23 WG2095840 1,1-Dichloropropene U 0.142 1.00 1 07/16/2023 17:23 WG2095840 1,3-Dichloropropane U 0.110 1.00 1 07/16/2023 17:23 WG2095840 2,2-Dichloropropane U 0.161 1.00 1 07/16/2023 17:23 WG2095840 Di-isopropyl ether U 0.105 1.00 1 07/16/2023 17:23 WG2095840 Ethylbenzene U 0.137 1.00 1 07/16/2023 17:23 WG2095840 Hexachloro-1,3-butadiene U 0.337 1.00 1 07/16/2023 17:23 WG2095840 Isopropylbenzene U 0.105 1.00 1 07/16/2023 17:23 WG2095840 p-Isopropyltoluene U 0.120 1.00 1 07/16/2023 17:23 WG2095840 2-Butanone (MEK)U 1.19 10.0 1 07/16/2023 17:23 WG2095840 Methylene Chloride U 0.430 5.00 1 07/16/2023 17:23 WG2095840 4-Methyl-2-pentanone (MIBK)U 0.478 10.0 1 07/16/2023 17:23 WG2095840 Methyl tert-butyl ether U 0.101 1.00 1 07/16/2023 17:23 WG2095840 Naphthalene U 1.00 5.00 1 07/16/2023 17:23 WG2095840 n-Propylbenzene U 0.0993 1.00 1 07/16/2023 17:23 WG2095840 Styrene U 0.118 1.00 1 07/16/2023 17:23 WG2095840 1,1,1,2-Tetrachloroethane U 0.147 1.00 1 07/16/2023 17:23 WG2095840 1,1,2,2-Tetrachloroethane U 0.133 1.00 1 07/16/2023 17:23 WG2095840 Tetrachloroethene U 0.300 1.00 1 07/16/2023 17:23 WG2095840 Toluene U 0.278 1.00 1 07/16/2023 17:23 WG2095840 1,2,3-Trichlorobenzene U 0.230 1.00 1 07/16/2023 17:23 WG2095840 1,2,4-Trichlorobenzene U 0.481 1.00 1 07/16/2023 17:23 WG2095840 1,1,1-Trichloroethane U 0.149 1.00 1 07/16/2023 17:23 WG2095840 1,1,2-Trichloroethane U 0.158 1.00 1 07/16/2023 17:23 WG2095840 Trichloroethene U 0.190 1.00 1 07/16/2023 17:23 WG2095840 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:12 23 of 60 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:23 23 of 60 SAMPLE RESULTS - 09 L1635814 EB-03-20230713 Collected date/time: 07/13/23 08:30 Volatile Organic Compounds (GC/MS) by Method 6200B-1997/6200B-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Trichlorofluoromethane U 0.160 5.00 1 07/16/2023 17:23 WG2095840 1,2,3-Trichloropropane U 0.237 2.50 1 07/16/2023 17:23 WG2095840 1,2,4-Trimethylbenzene U 0.322 1.00 1 07/16/2023 17:23 WG2095840 1,3,5-Trimethylbenzene U 0.104 1.00 1 07/16/2023 17:23 WG2095840 Vinyl chloride U 0.234 1.00 1 07/16/2023 17:23 WG2095840 o-Xylene U 0.174 1.00 1 07/16/2023 17:23 WG2095840 m&p-Xylenes U 0.430 2.00 1 07/16/2023 17:23 WG2095840 Xylenes, Total U 0.174 3.00 1 07/16/2023 17:23 WG2095840 ethanol U 42.0 100 1 07/21/2023 00:59 WG2096917 3,3-Dimethyl-1-butanol U 4.51 100 1 07/21/2023 00:59 WG2096917 Ethyl tert-butyl ether U 0.101 1.00 1 07/16/2023 17:23 WG2095840 t-Amyl Alcohol U 4.90 50.0 1 07/16/2023 17:23 WG2095840 tert-Butyl alcohol U 4.06 5.00 1 07/21/2023 00:59 WG2096917 tert-Butyl Formate U 4.51 20.0 1 07/16/2023 17:23 WG2095840 tert-Amyl Methyl Ether U 0.195 1.00 1 07/16/2023 17:23 WG2095840 (S) Toluene-d8 105 80.0-120 07/16/2023 17:23 WG2095840 (S) Toluene-d8 100 80.0-120 07/21/2023 00:59 WG2096917 (S) 4-Bromofluorobenzene 96.0 77.0-126 07/16/2023 17:23 WG2095840 (S) 4-Bromofluorobenzene 100 77.0-126 07/21/2023 00:59 WG2096917 (S) 1,2-Dichloroethane-d4 110 70.0-130 07/16/2023 17:23 WG2095840 (S) 1,2-Dichloroethane-d4 118 70.0-130 07/21/2023 00:59 WG2096917 EDB / DBCP by Method 8011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Ethylene Dibromide U 0.00547 0.0204 1.02 07/21/2023 17:57 WG2098245 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:12 24 of 60 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:23 24 of 60 SAMPLE RESULTS - 10 L1635814 MW-1-20230713 Collected date/time: 07/13/23 10:45 Wet Chemistry by Method 3500Fe B-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Ferrous Iron 35.0 J T8 15.0 50.0 1 07/16/2023 11:51 WG2095730 Wet Chemistry by Method 9056A Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Nitrate 2460 T8 48.0 100 1 07/21/2023 19:18 WG2099142 Sulfate 1880 J 594 5000 1 07/21/2023 19:18 WG2099142 Wet Chemistry by Method 9060A Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time TOC (Total Organic Carbon)767 B J 102 1000 1 07/27/2023 19:33 WG2100976 Metals (ICP) by Method 6010D Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Iron 1580 18.0 100 1 07/23/2023 13:49 WG2096554 Volatile Organic Compounds (GC) by Method RSK175 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Methane U 2.91 10.0 1 07/18/2023 13:31 WG2096697 Volatile Organic Compounds (GC/MS) by Method 6200B-1997/6200B-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Acetone U 11.3 50.0 1 07/16/2023 19:56 WG2095840 Acrolein U 2.54 50.0 1 07/16/2023 19:56 WG2095840 Acrylonitrile U 0.671 10.0 1 07/16/2023 19:56 WG2095840 Benzene 0.0989 J 0.0941 1.00 1 07/16/2023 19:56 WG2095840 Bromobenzene U 0.118 1.00 1 07/16/2023 19:56 WG2095840 Bromodichloromethane U 0.136 1.00 1 07/16/2023 19:56 WG2095840 Bromoform U 0.129 1.00 1 07/16/2023 19:56 WG2095840 Bromomethane U 0.605 5.00 1 07/16/2023 19:56 WG2095840 n-Butylbenzene U 0.157 1.00 1 07/16/2023 19:56 WG2095840 sec-Butylbenzene U 0.125 1.00 1 07/16/2023 19:56 WG2095840 tert-Butylbenzene U 0.127 1.00 1 07/16/2023 19:56 WG2095840 Carbon tetrachloride U 0.128 1.00 1 07/16/2023 19:56 WG2095840 Chlorobenzene U 0.116 1.00 1 07/16/2023 19:56 WG2095840 Chlorodibromomethane U 0.140 1.00 1 07/16/2023 19:56 WG2095840 Chloroethane U 0.192 5.00 1 07/16/2023 19:56 WG2095840 Chloroform U 0.111 5.00 1 07/16/2023 19:56 WG2095840 Chloromethane U 0.960 2.50 1 07/16/2023 19:56 WG2095840 2-Chlorotoluene U 0.106 1.00 1 07/16/2023 19:56 WG2095840 4-Chlorotoluene U 0.114 1.00 1 07/16/2023 19:56 WG2095840 1,2-Dibromo-3-Chloropropane U 0.276 5.00 1 07/16/2023 19:56 WG2095840 1,2-Dibromoethane U 0.126 1.00 1 07/16/2023 19:56 WG2095840 Dibromomethane U 0.122 1.00 1 07/16/2023 19:56 WG2095840 1,2-Dichlorobenzene U 0.107 1.00 1 07/16/2023 19:56 WG2095840 1,3-Dichlorobenzene U 0.110 1.00 1 07/16/2023 19:56 WG2095840 1,4-Dichlorobenzene U 0.120 1.00 1 07/16/2023 19:56 WG2095840 Dichlorodifluoromethane U 0.374 5.00 1 07/16/2023 19:56 WG2095840 1,1-Dichloroethane U 0.100 1.00 1 07/16/2023 19:56 WG2095840 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:12 25 of 60 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:23 25 of 60 SAMPLE RESULTS - 10 L1635814 MW-1-20230713 Collected date/time: 07/13/23 10:45 Volatile Organic Compounds (GC/MS) by Method 6200B-1997/6200B-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time 1,2-Dichloroethane 0.159 J 0.0819 1.00 1 07/16/2023 19:56 WG2095840 1,1-Dichloroethene U 0.188 1.00 1 07/16/2023 19:56 WG2095840 cis-1,2-Dichloroethene U 0.126 1.00 1 07/16/2023 19:56 WG2095840 trans-1,2-Dichloroethene U 0.149 1.00 1 07/16/2023 19:56 WG2095840 1,2-Dichloropropane U 0.149 1.00 1 07/16/2023 19:56 WG2095840 1,1-Dichloropropene U 0.142 1.00 1 07/16/2023 19:56 WG2095840 1,3-Dichloropropane U 0.110 1.00 1 07/16/2023 19:56 WG2095840 2,2-Dichloropropane U 0.161 1.00 1 07/16/2023 19:56 WG2095840 Di-isopropyl ether U 0.105 1.00 1 07/16/2023 19:56 WG2095840 Ethylbenzene U 0.137 1.00 1 07/16/2023 19:56 WG2095840 Hexachloro-1,3-butadiene U 0.337 1.00 1 07/16/2023 19:56 WG2095840 Isopropylbenzene U 0.105 1.00 1 07/16/2023 19:56 WG2095840 p-Isopropyltoluene U 0.120 1.00 1 07/16/2023 19:56 WG2095840 2-Butanone (MEK)U 1.19 10.0 1 07/16/2023 19:56 WG2095840 Methylene Chloride U 0.430 5.00 1 07/16/2023 19:56 WG2095840 4-Methyl-2-pentanone (MIBK)U 0.478 10.0 1 07/16/2023 19:56 WG2095840 Methyl tert-butyl ether 0.532 J 0.101 1.00 1 07/16/2023 19:56 WG2095840 Naphthalene U 1.00 5.00 1 07/16/2023 19:56 WG2095840 n-Propylbenzene U 0.0993 1.00 1 07/16/2023 19:56 WG2095840 Styrene U 0.118 1.00 1 07/16/2023 19:56 WG2095840 1,1,1,2-Tetrachloroethane U 0.147 1.00 1 07/16/2023 19:56 WG2095840 1,1,2,2-Tetrachloroethane U 0.133 1.00 1 07/16/2023 19:56 WG2095840 Tetrachloroethene U 0.300 1.00 1 07/16/2023 19:56 WG2095840 Toluene U 0.278 1.00 1 07/16/2023 19:56 WG2095840 1,2,3-Trichlorobenzene U 0.230 1.00 1 07/16/2023 19:56 WG2095840 1,2,4-Trichlorobenzene U 0.481 1.00 1 07/16/2023 19:56 WG2095840 1,1,1-Trichloroethane U 0.149 1.00 1 07/16/2023 19:56 WG2095840 1,1,2-Trichloroethane U 0.158 1.00 1 07/16/2023 19:56 WG2095840 Trichloroethene U 0.190 1.00 1 07/16/2023 19:56 WG2095840 Trichlorofluoromethane U 0.160 5.00 1 07/16/2023 19:56 WG2095840 1,2,3-Trichloropropane U 0.237 2.50 1 07/16/2023 19:56 WG2095840 1,2,4-Trimethylbenzene U 0.322 1.00 1 07/16/2023 19:56 WG2095840 1,3,5-Trimethylbenzene U 0.104 1.00 1 07/16/2023 19:56 WG2095840 Vinyl chloride U 0.234 1.00 1 07/16/2023 19:56 WG2095840 o-Xylene U 0.174 1.00 1 07/16/2023 19:56 WG2095840 m&p-Xylenes U 0.430 2.00 1 07/16/2023 19:56 WG2095840 Xylenes, Total U 0.174 3.00 1 07/16/2023 19:56 WG2095840 ethanol U 42.0 100 1 07/21/2023 01:19 WG2096917 3,3-Dimethyl-1-butanol U 4.51 100 1 07/21/2023 01:19 WG2096917 Ethyl tert-butyl ether U 0.101 1.00 1 07/16/2023 19:56 WG2095840 t-Amyl Alcohol U 4.90 50.0 1 07/16/2023 19:56 WG2095840 tert-Butyl alcohol U 4.06 5.00 1 07/21/2023 01:19 WG2096917 tert-Butyl Formate U 4.51 20.0 1 07/16/2023 19:56 WG2095840 tert-Amyl Methyl Ether U 0.195 1.00 1 07/16/2023 19:56 WG2095840 (S) Toluene-d8 103 80.0-120 07/16/2023 19:56 WG2095840 (S) Toluene-d8 101 80.0-120 07/21/2023 01:19 WG2096917 (S) 4-Bromofluorobenzene 98.4 77.0-126 07/16/2023 19:56 WG2095840 (S) 4-Bromofluorobenzene 99.6 77.0-126 07/21/2023 01:19 WG2096917 (S) 1,2-Dichloroethane-d4 113 70.0-130 07/16/2023 19:56 WG2095840 (S) 1,2-Dichloroethane-d4 119 70.0-130 07/21/2023 01:19 WG2096917 EDB / DBCP by Method 8011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Ethylene Dibromide U 0.00552 0.0206 1.03 07/21/2023 18:49 WG2098245 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:12 26 of 60 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:23 26 of 60 SAMPLE RESULTS - 11 L1635814 MW-8-20230713 Collected date/time: 07/13/23 13:50 Wet Chemistry by Method 3500Fe B-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Ferrous Iron 6700 T8 150 500 10 07/16/2023 11:52 WG2095730 Wet Chemistry by Method 9056A Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Nitrate 55.8 J T8 48.0 100 1 07/21/2023 19:30 WG2099142 Sulfate 1260 J 594 5000 1 07/21/2023 19:30 WG2099142 Wet Chemistry by Method 9060A Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time TOC (Total Organic Carbon)208000 510 5000 1 07/27/2023 19:51 WG2100976 Metals (ICP) by Method 6010D Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Iron 3370 18.0 100 1 07/23/2023 13:52 WG2096554 Volatile Organic Compounds (GC) by Method RSK175 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Methane 173 2.91 10.0 1 07/18/2023 13:49 WG2096697 Volatile Organic Compounds (GC/MS) by Method 6200B-1997/6200B-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Acetone U 11300 50000 1000 07/16/2023 21:51 WG2095840 Acrolein U 2540 50000 1000 07/16/2023 21:51 WG2095840 Acrylonitrile U 671 10000 1000 07/16/2023 21:51 WG2095840 Benzene 24100 94.1 1000 1000 07/16/2023 21:51 WG2095840 Bromobenzene U 118 1000 1000 07/16/2023 21:51 WG2095840 Bromodichloromethane U 136 1000 1000 07/16/2023 21:51 WG2095840 Bromoform U 129 1000 1000 07/16/2023 21:51 WG2095840 Bromomethane U 605 5000 1000 07/16/2023 21:51 WG2095840 n-Butylbenzene U 157 1000 1000 07/16/2023 21:51 WG2095840 sec-Butylbenzene U 125 1000 1000 07/16/2023 21:51 WG2095840 tert-Butylbenzene U 127 1000 1000 07/16/2023 21:51 WG2095840 Carbon tetrachloride U 128 1000 1000 07/16/2023 21:51 WG2095840 Chlorobenzene U 116 1000 1000 07/16/2023 21:51 WG2095840 Chlorodibromomethane U 140 1000 1000 07/16/2023 21:51 WG2095840 Chloroethane U 192 5000 1000 07/16/2023 21:51 WG2095840 Chloroform U 111 5000 1000 07/16/2023 21:51 WG2095840 Chloromethane U 960 2500 1000 07/16/2023 21:51 WG2095840 2-Chlorotoluene U 106 1000 1000 07/16/2023 21:51 WG2095840 4-Chlorotoluene U 114 1000 1000 07/16/2023 21:51 WG2095840 1,2-Dibromo-3-Chloropropane U 276 5000 1000 07/16/2023 21:51 WG2095840 1,2-Dibromoethane 198 J 126 1000 1000 07/16/2023 21:51 WG2095840 Dibromomethane U 122 1000 1000 07/16/2023 21:51 WG2095840 1,2-Dichlorobenzene U 107 1000 1000 07/16/2023 21:51 WG2095840 1,3-Dichlorobenzene U 110 1000 1000 07/16/2023 21:51 WG2095840 1,4-Dichlorobenzene U 120 1000 1000 07/16/2023 21:51 WG2095840 Dichlorodifluoromethane U 374 5000 1000 07/16/2023 21:51 WG2095840 1,1-Dichloroethane U 100 1000 1000 07/16/2023 21:51 WG2095840 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:12 27 of 60 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:23 27 of 60 SAMPLE RESULTS - 11 L1635814 MW-8-20230713 Collected date/time: 07/13/23 13:50 Volatile Organic Compounds (GC/MS) by Method 6200B-1997/6200B-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time 1,2-Dichloroethane 985 J 81.9 1000 1000 07/16/2023 21:51 WG2095840 1,1-Dichloroethene U 188 1000 1000 07/16/2023 21:51 WG2095840 cis-1,2-Dichloroethene U 126 1000 1000 07/16/2023 21:51 WG2095840 trans-1,2-Dichloroethene U 149 1000 1000 07/16/2023 21:51 WG2095840 1,2-Dichloropropane U 149 1000 1000 07/16/2023 21:51 WG2095840 1,1-Dichloropropene U 142 1000 1000 07/16/2023 21:51 WG2095840 1,3-Dichloropropane U 110 1000 1000 07/16/2023 21:51 WG2095840 2,2-Dichloropropane U 161 1000 1000 07/16/2023 21:51 WG2095840 Di-isopropyl ether 276 J 105 1000 1000 07/16/2023 21:51 WG2095840 Ethylbenzene 2350 137 1000 1000 07/16/2023 21:51 WG2095840 Hexachloro-1,3-butadiene U 337 1000 1000 07/16/2023 21:51 WG2095840 Isopropylbenzene U 105 1000 1000 07/16/2023 21:51 WG2095840 p-Isopropyltoluene U 120 1000 1000 07/16/2023 21:51 WG2095840 2-Butanone (MEK)6240 J 1190 10000 1000 07/16/2023 21:51 WG2095840 Methylene Chloride U 430 5000 1000 07/16/2023 21:51 WG2095840 4-Methyl-2-pentanone (MIBK)U 478 10000 1000 07/16/2023 21:51 WG2095840 Methyl tert-butyl ether 79700 101 1000 1000 07/16/2023 21:51 WG2095840 Naphthalene U 1000 5000 1000 07/16/2023 21:51 WG2095840 n-Propylbenzene 184 J 99.3 1000 1000 07/16/2023 21:51 WG2095840 Styrene U 118 1000 1000 07/16/2023 21:51 WG2095840 1,1,1,2-Tetrachloroethane U 147 1000 1000 07/16/2023 21:51 WG2095840 1,1,2,2-Tetrachloroethane U 133 1000 1000 07/16/2023 21:51 WG2095840 Tetrachloroethene U 300 1000 1000 07/16/2023 21:51 WG2095840 Toluene 20300 278 1000 1000 07/16/2023 21:51 WG2095840 1,2,3-Trichlorobenzene U 230 1000 1000 07/16/2023 21:51 WG2095840 1,2,4-Trichlorobenzene U 481 1000 1000 07/16/2023 21:51 WG2095840 1,1,1-Trichloroethane U 149 1000 1000 07/16/2023 21:51 WG2095840 1,1,2-Trichloroethane U 158 1000 1000 07/16/2023 21:51 WG2095840 Trichloroethene U 190 1000 1000 07/16/2023 21:51 WG2095840 Trichlorofluoromethane U 160 5000 1000 07/16/2023 21:51 WG2095840 1,2,3-Trichloropropane U 237 2500 1000 07/16/2023 21:51 WG2095840 1,2,4-Trimethylbenzene 1320 322 1000 1000 07/16/2023 21:51 WG2095840 1,3,5-Trimethylbenzene 278 J 104 1000 1000 07/16/2023 21:51 WG2095840 Vinyl chloride U 234 1000 1000 07/16/2023 21:51 WG2095840 o-Xylene 3780 174 1000 1000 07/16/2023 21:51 WG2095840 m&p-Xylenes 7830 430 2000 1000 07/16/2023 21:51 WG2095840 Xylenes, Total 11600 174 3000 1000 07/16/2023 21:51 WG2095840 ethanol U 42000 100000 1000 07/21/2023 04:23 WG2096917 3,3-Dimethyl-1-butanol U 4510 100000 1000 07/21/2023 04:23 WG2096917 Ethyl tert-butyl ether U 101 1000 1000 07/16/2023 21:51 WG2095840 t-Amyl Alcohol 107000 4900 50000 1000 07/16/2023 21:51 WG2095840 tert-Butyl alcohol 45400 4060 5000 1000 07/21/2023 04:23 WG2096917 tert-Butyl Formate U 4510 20000 1000 07/16/2023 21:51 WG2095840 tert-Amyl Methyl Ether 289 J 195 1000 1000 07/16/2023 21:51 WG2095840 (S) Toluene-d8 104 80.0-120 07/16/2023 21:51 WG2095840 (S) Toluene-d8 100 80.0-120 07/21/2023 04:23 WG2096917 (S) 4-Bromofluorobenzene 98.6 77.0-126 07/16/2023 21:51 WG2095840 (S) 4-Bromofluorobenzene 102 77.0-126 07/21/2023 04:23 WG2096917 (S) 1,2-Dichloroethane-d4 110 70.0-130 07/16/2023 21:51 WG2095840 (S) 1,2-Dichloroethane-d4 117 70.0-130 07/21/2023 04:23 WG2096917 EDB / DBCP by Method 8011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Ethylene Dibromide 203 5.90 22.0 1100 07/24/2023 15:47 WG2098245 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:12 28 of 60 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:23 28 of 60 SAMPLE RESULTS - 12 L1635814 MW-9-20230713 Collected date/time: 07/13/23 16:15 Wet Chemistry by Method 3500Fe B-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Ferrous Iron 8260 T8 150 500 10 07/16/2023 11:52 WG2095730 Wet Chemistry by Method 9056A Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Nitrate 3760 48.0 100 1 07/15/2023 14:53 WG2095435 Sulfate 2880 J 594 5000 1 07/15/2023 14:53 WG2095435 Wet Chemistry by Method 9060A Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time TOC (Total Organic Carbon)18500 102 1000 1 07/26/2023 16:01 WG2100982 Metals (ICP) by Method 6010D Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Iron 7410 18.0 100 1 07/23/2023 13:55 WG2096554 Volatile Organic Compounds (GC) by Method RSK175 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Methane 92.6 2.91 10.0 1 07/18/2023 13:54 WG2096697 Volatile Organic Compounds (GC/MS) by Method 6200B-1997/6200B-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Acetone U 2260 10000 200 07/16/2023 22:10 WG2095840 Acrolein U 508 10000 200 07/16/2023 22:10 WG2095840 Acrylonitrile U 134 2000 200 07/16/2023 22:10 WG2095840 Benzene 2370 18.8 200 200 07/16/2023 22:10 WG2095840 Bromobenzene U 23.6 200 200 07/16/2023 22:10 WG2095840 Bromodichloromethane U 27.2 200 200 07/16/2023 22:10 WG2095840 Bromoform U 25.8 200 200 07/16/2023 22:10 WG2095840 Bromomethane U 121 1000 200 07/16/2023 22:10 WG2095840 n-Butylbenzene U 31.4 200 200 07/16/2023 22:10 WG2095840 sec-Butylbenzene U 25.0 200 200 07/16/2023 22:10 WG2095840 tert-Butylbenzene U 25.4 200 200 07/16/2023 22:10 WG2095840 Carbon tetrachloride U 25.6 200 200 07/16/2023 22:10 WG2095840 Chlorobenzene U 23.2 200 200 07/16/2023 22:10 WG2095840 Chlorodibromomethane U 28.0 200 200 07/16/2023 22:10 WG2095840 Chloroethane U 38.4 1000 200 07/16/2023 22:10 WG2095840 Chloroform U 22.2 1000 200 07/16/2023 22:10 WG2095840 Chloromethane U 192 500 200 07/16/2023 22:10 WG2095840 2-Chlorotoluene U 21.2 200 200 07/16/2023 22:10 WG2095840 4-Chlorotoluene U 22.8 200 200 07/16/2023 22:10 WG2095840 1,2-Dibromo-3-Chloropropane U 55.2 1000 200 07/16/2023 22:10 WG2095840 1,2-Dibromoethane U 25.2 200 200 07/16/2023 22:10 WG2095840 Dibromomethane U 24.4 200 200 07/16/2023 22:10 WG2095840 1,2-Dichlorobenzene U 21.4 200 200 07/16/2023 22:10 WG2095840 1,3-Dichlorobenzene U 22.0 200 200 07/16/2023 22:10 WG2095840 1,4-Dichlorobenzene U 24.0 200 200 07/16/2023 22:10 WG2095840 Dichlorodifluoromethane U 74.8 1000 200 07/16/2023 22:10 WG2095840 1,1-Dichloroethane U 20.0 200 200 07/16/2023 22:10 WG2095840 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:12 29 of 60 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:23 29 of 60 SAMPLE RESULTS - 12 L1635814 MW-9-20230713 Collected date/time: 07/13/23 16:15 Volatile Organic Compounds (GC/MS) by Method 6200B-1997/6200B-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time 1,2-Dichloroethane 24.3 J 16.4 200 200 07/16/2023 22:10 WG2095840 1,1-Dichloroethene U 37.6 200 200 07/16/2023 22:10 WG2095840 cis-1,2-Dichloroethene U 25.2 200 200 07/16/2023 22:10 WG2095840 trans-1,2-Dichloroethene U 29.8 200 200 07/16/2023 22:10 WG2095840 1,2-Dichloropropane U 29.8 200 200 07/16/2023 22:10 WG2095840 1,1-Dichloropropene U 28.4 200 200 07/16/2023 22:10 WG2095840 1,3-Dichloropropane U 22.0 200 200 07/16/2023 22:10 WG2095840 2,2-Dichloropropane U 32.2 200 200 07/16/2023 22:10 WG2095840 Di-isopropyl ether U 21.0 200 200 07/16/2023 22:10 WG2095840 Ethylbenzene 542 27.4 200 200 07/16/2023 22:10 WG2095840 Hexachloro-1,3-butadiene U 67.4 200 200 07/16/2023 22:10 WG2095840 Isopropylbenzene 28.9 J 21.0 200 200 07/16/2023 22:10 WG2095840 p-Isopropyltoluene U 24.0 200 200 07/16/2023 22:10 WG2095840 2-Butanone (MEK)U 238 2000 200 07/16/2023 22:10 WG2095840 Methylene Chloride U 86.0 1000 200 07/16/2023 22:10 WG2095840 4-Methyl-2-pentanone (MIBK)U 95.6 2000 200 07/16/2023 22:10 WG2095840 Methyl tert-butyl ether 3970 20.2 200 200 07/16/2023 22:10 WG2095840 Naphthalene U 200 1000 200 07/16/2023 22:10 WG2095840 n-Propylbenzene 61.9 J 19.9 200 200 07/16/2023 22:10 WG2095840 Styrene U 23.6 200 200 07/16/2023 22:10 WG2095840 1,1,1,2-Tetrachloroethane U 29.4 200 200 07/16/2023 22:10 WG2095840 1,1,2,2-Tetrachloroethane U 26.6 200 200 07/16/2023 22:10 WG2095840 Tetrachloroethene U 60.0 200 200 07/16/2023 22:10 WG2095840 Toluene U 55.6 200 200 07/16/2023 22:10 WG2095840 1,2,3-Trichlorobenzene U 46.0 200 200 07/16/2023 22:10 WG2095840 1,2,4-Trichlorobenzene U 96.2 200 200 07/16/2023 22:10 WG2095840 1,1,1-Trichloroethane U 29.8 200 200 07/16/2023 22:10 WG2095840 1,1,2-Trichloroethane U 31.6 200 200 07/16/2023 22:10 WG2095840 Trichloroethene U 38.0 200 200 07/16/2023 22:10 WG2095840 Trichlorofluoromethane U 32.0 1000 200 07/16/2023 22:10 WG2095840 1,2,3-Trichloropropane U 47.4 500 200 07/16/2023 22:10 WG2095840 1,2,4-Trimethylbenzene U 64.4 200 200 07/16/2023 22:10 WG2095840 1,3,5-Trimethylbenzene U 20.8 200 200 07/16/2023 22:10 WG2095840 Vinyl chloride U 46.8 200 200 07/16/2023 22:10 WG2095840 o-Xylene U 34.8 200 200 07/16/2023 22:10 WG2095840 m&p-Xylenes U 86.0 400 200 07/16/2023 22:10 WG2095840 Xylenes, Total U 34.8 600 200 07/16/2023 22:10 WG2095840 ethanol U 8400 20000 200 07/21/2023 04:44 WG2096917 3,3-Dimethyl-1-butanol U 902 20000 200 07/21/2023 04:44 WG2096917 Ethyl tert-butyl ether U 20.2 200 200 07/16/2023 22:10 WG2095840 t-Amyl Alcohol 1170 J 980 10000 200 07/16/2023 22:10 WG2095840 tert-Butyl alcohol 1000 J 812 1000 200 07/21/2023 04:44 WG2096917 tert-Butyl Formate U 902 4000 200 07/16/2023 22:10 WG2095840 tert-Amyl Methyl Ether U 39.0 200 200 07/16/2023 22:10 WG2095840 (S) Toluene-d8 103 80.0-120 07/16/2023 22:10 WG2095840 (S) Toluene-d8 99.5 80.0-120 07/21/2023 04:44 WG2096917 (S) 4-Bromofluorobenzene 97.2 77.0-126 07/16/2023 22:10 WG2095840 (S) 4-Bromofluorobenzene 98.8 77.0-126 07/21/2023 04:44 WG2096917 (S) 1,2-Dichloroethane-d4 111 70.0-130 07/16/2023 22:10 WG2095840 (S) 1,2-Dichloroethane-d4 116 70.0-130 07/21/2023 04:44 WG2096917 EDB / DBCP by Method 8011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Ethylene Dibromide 0.0216 0.00536 0.0200 1 07/24/2023 13:16 WG2098245 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:12 30 of 60 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:23 30 of 60 SAMPLE RESULTS - 13 L1635814 MW-4D-20230713 Collected date/time: 07/13/23 17:50 Wet Chemistry by Method 3500Fe B-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Ferrous Iron 88.0 T8 15.0 50.0 1 07/16/2023 11:54 WG2095730 Wet Chemistry by Method 9056A Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Nitrate 3070 48.0 100 1 07/15/2023 15:08 WG2095435 Sulfate 10600 594 5000 1 07/15/2023 15:08 WG2095435 Wet Chemistry by Method 9060A Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time TOC (Total Organic Carbon)873 B J 102 1000 1 07/26/2023 16:14 WG2100982 Metals (ICP) by Method 6010D Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Iron 10700 18.0 100 1 07/23/2023 13:58 WG2096554 Volatile Organic Compounds (GC) by Method RSK175 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Methane U 2.91 10.0 1 07/19/2023 10:41 WG2097489 Volatile Organic Compounds (GC/MS) by Method 6200B-1997/6200B-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Acetone U 11.3 50.0 1 07/16/2023 20:16 WG2095840 Acrolein U 2.54 50.0 1 07/16/2023 20:16 WG2095840 Acrylonitrile U 0.671 10.0 1 07/16/2023 20:16 WG2095840 Benzene 0.423 J 0.0941 1.00 1 07/16/2023 20:16 WG2095840 Bromobenzene U 0.118 1.00 1 07/16/2023 20:16 WG2095840 Bromodichloromethane U 0.136 1.00 1 07/16/2023 20:16 WG2095840 Bromoform U 0.129 1.00 1 07/16/2023 20:16 WG2095840 Bromomethane U 0.605 5.00 1 07/16/2023 20:16 WG2095840 n-Butylbenzene U 0.157 1.00 1 07/16/2023 20:16 WG2095840 sec-Butylbenzene U 0.125 1.00 1 07/16/2023 20:16 WG2095840 tert-Butylbenzene U 0.127 1.00 1 07/16/2023 20:16 WG2095840 Carbon tetrachloride U 0.128 1.00 1 07/16/2023 20:16 WG2095840 Chlorobenzene U 0.116 1.00 1 07/16/2023 20:16 WG2095840 Chlorodibromomethane U 0.140 1.00 1 07/16/2023 20:16 WG2095840 Chloroethane U 0.192 5.00 1 07/16/2023 20:16 WG2095840 Chloroform 0.836 J 0.111 5.00 1 07/16/2023 20:16 WG2095840 Chloromethane U 0.960 2.50 1 07/16/2023 20:16 WG2095840 2-Chlorotoluene U 0.106 1.00 1 07/16/2023 20:16 WG2095840 4-Chlorotoluene U 0.114 1.00 1 07/16/2023 20:16 WG2095840 1,2-Dibromo-3-Chloropropane U 0.276 5.00 1 07/16/2023 20:16 WG2095840 1,2-Dibromoethane U 0.126 1.00 1 07/16/2023 20:16 WG2095840 Dibromomethane U 0.122 1.00 1 07/16/2023 20:16 WG2095840 1,2-Dichlorobenzene U 0.107 1.00 1 07/16/2023 20:16 WG2095840 1,3-Dichlorobenzene U 0.110 1.00 1 07/16/2023 20:16 WG2095840 1,4-Dichlorobenzene U 0.120 1.00 1 07/16/2023 20:16 WG2095840 Dichlorodifluoromethane U 0.374 5.00 1 07/16/2023 20:16 WG2095840 1,1-Dichloroethane U 0.100 1.00 1 07/16/2023 20:16 WG2095840 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:12 31 of 60 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:23 31 of 60 SAMPLE RESULTS - 13 L1635814 MW-4D-20230713 Collected date/time: 07/13/23 17:50 Volatile Organic Compounds (GC/MS) by Method 6200B-1997/6200B-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time 1,2-Dichloroethane 0.473 J 0.0819 1.00 1 07/16/2023 20:16 WG2095840 1,1-Dichloroethene U 0.188 1.00 1 07/16/2023 20:16 WG2095840 cis-1,2-Dichloroethene U 0.126 1.00 1 07/16/2023 20:16 WG2095840 trans-1,2-Dichloroethene U 0.149 1.00 1 07/16/2023 20:16 WG2095840 1,2-Dichloropropane U 0.149 1.00 1 07/16/2023 20:16 WG2095840 1,1-Dichloropropene U 0.142 1.00 1 07/16/2023 20:16 WG2095840 1,3-Dichloropropane U 0.110 1.00 1 07/16/2023 20:16 WG2095840 2,2-Dichloropropane U 0.161 1.00 1 07/16/2023 20:16 WG2095840 Di-isopropyl ether 0.682 J 0.105 1.00 1 07/16/2023 20:16 WG2095840 Ethylbenzene 0.163 J 0.137 1.00 1 07/16/2023 20:16 WG2095840 Hexachloro-1,3-butadiene U 0.337 1.00 1 07/16/2023 20:16 WG2095840 Isopropylbenzene U 0.105 1.00 1 07/16/2023 20:16 WG2095840 p-Isopropyltoluene U 0.120 1.00 1 07/16/2023 20:16 WG2095840 2-Butanone (MEK)U 1.19 10.0 1 07/16/2023 20:16 WG2095840 Methylene Chloride U 0.430 5.00 1 07/16/2023 20:16 WG2095840 4-Methyl-2-pentanone (MIBK)U 0.478 10.0 1 07/16/2023 20:16 WG2095840 Methyl tert-butyl ether 6.08 0.101 1.00 1 07/16/2023 20:16 WG2095840 Naphthalene U 1.00 5.00 1 07/16/2023 20:16 WG2095840 n-Propylbenzene U 0.0993 1.00 1 07/16/2023 20:16 WG2095840 Styrene U 0.118 1.00 1 07/16/2023 20:16 WG2095840 1,1,1,2-Tetrachloroethane U 0.147 1.00 1 07/16/2023 20:16 WG2095840 1,1,2,2-Tetrachloroethane U 0.133 1.00 1 07/16/2023 20:16 WG2095840 Tetrachloroethene U 0.300 1.00 1 07/16/2023 20:16 WG2095840 Toluene 0.528 J 0.278 1.00 1 07/16/2023 20:16 WG2095840 1,2,3-Trichlorobenzene U 0.230 1.00 1 07/16/2023 20:16 WG2095840 1,2,4-Trichlorobenzene U 0.481 1.00 1 07/16/2023 20:16 WG2095840 1,1,1-Trichloroethane U 0.149 1.00 1 07/16/2023 20:16 WG2095840 1,1,2-Trichloroethane U 0.158 1.00 1 07/16/2023 20:16 WG2095840 Trichloroethene U 0.190 1.00 1 07/16/2023 20:16 WG2095840 Trichlorofluoromethane 0.479 J 0.160 5.00 1 07/16/2023 20:16 WG2095840 1,2,3-Trichloropropane U 0.237 2.50 1 07/16/2023 20:16 WG2095840 1,2,4-Trimethylbenzene U 0.322 1.00 1 07/16/2023 20:16 WG2095840 1,3,5-Trimethylbenzene U 0.104 1.00 1 07/16/2023 20:16 WG2095840 Vinyl chloride U 0.234 1.00 1 07/16/2023 20:16 WG2095840 o-Xylene U 0.174 1.00 1 07/16/2023 20:16 WG2095840 m&p-Xylenes U 0.430 2.00 1 07/16/2023 20:16 WG2095840 Xylenes, Total U 0.174 3.00 1 07/16/2023 20:16 WG2095840 ethanol U 42.0 100 1 07/21/2023 01:40 WG2096917 3,3-Dimethyl-1-butanol U 4.51 100 1 07/21/2023 01:40 WG2096917 Ethyl tert-butyl ether U 0.101 1.00 1 07/16/2023 20:16 WG2095840 t-Amyl Alcohol U 4.90 50.0 1 07/16/2023 20:16 WG2095840 tert-Butyl alcohol U 4.06 5.00 1 07/21/2023 01:40 WG2096917 tert-Butyl Formate U 4.51 20.0 1 07/16/2023 20:16 WG2095840 tert-Amyl Methyl Ether U 0.195 1.00 1 07/16/2023 20:16 WG2095840 (S) Toluene-d8 102 80.0-120 07/16/2023 20:16 WG2095840 (S) Toluene-d8 101 80.0-120 07/21/2023 01:40 WG2096917 (S) 4-Bromofluorobenzene 94.8 77.0-126 07/16/2023 20:16 WG2095840 (S) 4-Bromofluorobenzene 98.1 77.0-126 07/21/2023 01:40 WG2096917 (S) 1,2-Dichloroethane-d4 112 70.0-130 07/16/2023 20:16 WG2095840 (S) 1,2-Dichloroethane-d4 117 70.0-130 07/21/2023 01:40 WG2096917 EDB / DBCP by Method 8011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Ethylene Dibromide U 0.00536 0.0200 1 07/21/2023 19:27 WG2098245 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:12 32 of 60 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:23 32 of 60 QUALITY CONTROL SUMMARYWG2095725 Wet Chemistry by Method 3500Fe B-2011 L1635814-01,02,04,05,07,08 Method Blank (MB) (MB) R3949085-1 07/16/23 15:37 MB Result MB Qualifier MB MDL MB RDL Analyte ug/l ug/l ug/l Ferrous Iron U 15.0 50.0 L1635486-26 Original Sample (OS) • Duplicate (DUP) (OS) L1635486-26 07/16/23 16:00 • (DUP) R3949085-3 07/16/23 16:00 Original Result DUP Result Dilution DUP RPD DUP Qualifier DUP RPD Limits Analyte ug/l ug/l %% Ferrous Iron 93.0 91.0 1 2.17 20 L1635486-27 Original Sample (OS) • Duplicate (DUP) (OS) L1635486-27 07/16/23 16:01 • (DUP) R3949085-4 07/16/23 16:01 Original Result DUP Result Dilution DUP RPD DUP Qualifier DUP RPD Limits Analyte ug/l ug/l %% Ferrous Iron 108 103 1 4.74 20 Laboratory Control Sample (LCS) (LCS) R3949085-2 07/16/23 15:37 Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier Analyte ug/l ug/l %% Ferrous Iron 1000 1110 111 85.0-115 L1635814-05 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1635814-05 07/16/23 16:10 • (MS) R3949085-5 07/16/23 16:10 • (MSD) R3949085-6 07/16/23 16:11 Spike Amount Original Result MS Result MSD Result MS Rec.MSD Rec.Dilution Rec. Limits MS Qualifier MSD Qualifier RPD RPD Limits Analyte ug/l ug/l ug/l ug/l %%%%% Ferrous Iron 1000 U 1050 1050 105 105 1 80.0-120 0.000 20 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:12 33 of 60 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:23 33 of 60 QUALITY CONTROL SUMMARYWG2095730 Wet Chemistry by Method 3500Fe B-2011 L1635814-10,11,12,13 Method Blank (MB) (MB) R3949081-1 07/16/23 11:51 MB Result MB Qualifier MB MDL MB RDL Analyte ug/l ug/l ug/l Ferrous Iron U 15.0 50.0 L1635814-10 Original Sample (OS) • Duplicate (DUP) (OS) L1635814-10 07/16/23 11:51 • (DUP) R3949081-3 07/16/23 11:52 Original Result DUP Result Dilution DUP RPD DUP Qualifier DUP RPD Limits Analyte ug/l ug/l %% Ferrous Iron 35.0 34.0 1 2.90 J 20 Laboratory Control Sample (LCS) (LCS) R3949081-2 07/16/23 11:51 Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier Analyte ug/l ug/l %% Ferrous Iron 1000 1090 109 85.0-115 L1635814-13 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1635814-13 07/16/23 11:54 • (MS) R3949081-4 07/16/23 11:54 • (MSD) R3949081-5 07/16/23 11:54 Spike Amount Original Result MS Result MSD Result MS Rec.MSD Rec.Dilution Rec. Limits MS Qualifier MSD Qualifier RPD RPD Limits Analyte ug/l ug/l ug/l ug/l %%%%% Ferrous Iron 1000 88.0 1130 1110 104 102 1 80.0-120 1.61 20 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:12 34 of 60 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:23 34 of 60 QUALITY CONTROL SUMMARYWG2095435 Wet Chemistry by Method 9056A L1635814-12,13 Method Blank (MB) (MB) R3950345-1 07/15/23 09:58 MB Result MB Qualifier MB MDL MB RDL Analyte ug/l ug/l ug/l Nitrate U 48.0 100 Sulfate U 594 5000 L1635748-01 Original Sample (OS) • Duplicate (DUP) (OS) L1635748-01 07/15/23 11:35 • (DUP) R3950345-6 07/15/23 15:46 Original Result DUP Result Dilution DUP RPD DUP Qualifier DUP RPD Limits Analyte ug/l ug/l %% Nitrate U U 1 0.000 15 Sulfate 71600 71300 1 0.415 15 L1635814-13 Original Sample (OS) • Duplicate (DUP) (OS) L1635814-13 07/15/23 15:08 • (DUP) R3950345-9 07/15/23 19:59 Original Result DUP Result Dilution DUP RPD DUP Qualifier DUP RPD Limits Analyte ug/l ug/l %% Nitrate 3070 2850 1 7.71 15 Sulfate 10600 10200 1 3.61 15 Laboratory Control Sample (LCS) (LCS) R3950345-2 07/15/23 10:13 Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier Analyte ug/l ug/l %% Nitrate 8000 7960 99.5 80.0-120 Sulfate 40000 40600 102 80.0-120 L1635748-01 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1635748-01 07/15/23 11:35 • (MS) R3950345-7 07/15/23 16:00 • (MSD) R3950345-8 07/15/23 16:15 Spike Amount Original Result MS Result MSD Result MS Rec.MSD Rec.Dilution Rec. Limits MS Qualifier MSD Qualifier RPD RPD Limits Analyte ug/l ug/l ug/l ug/l %%%%% Nitrate 5000 U 4560 4460 91.2 89.2 1 80.0-120 2.18 15 Sulfate 50000 71600 116000 115000 88.0 86.9 1 80.0-120 0.488 15 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:12 35 of 60 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:23 35 of 60 QUALITY CONTROL SUMMARYWG2095435 Wet Chemistry by Method 9056A L1635814-12,13 L1635814-13 Original Sample (OS) • Matrix Spike (MS) (OS) L1635814-13 07/15/23 15:08 • (MS) R3950345-10 07/15/23 20:14 Spike Amount Original Result MS Result MS Rec.Dilution Rec. Limits MS Qualifier Analyte ug/l ug/l ug/l %% Nitrate 5000 3070 7320 84.9 1 80.0-120 Sulfate 50000 10600 58000 94.8 1 80.0-120 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:12 36 of 60 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:23 36 of 60 QUALITY CONTROL SUMMARYWG2097097 Wet Chemistry by Method 9056A L1635814-01 Method Blank (MB) (MB) R3950697-1 07/18/23 13:51 MB Result MB Qualifier MB MDL MB RDL Analyte ug/l ug/l ug/l Nitrate U 48.0 100 Sulfate U 594 5000 L1634561-01 Original Sample (OS) • Duplicate (DUP) (OS) L1634561-01 07/18/23 20:30 • (DUP) R3950697-3 07/18/23 20:42 Original Result DUP Result Dilution DUP RPD DUP Qualifier DUP RPD Limits Analyte ug/l ug/l %% Nitrate 524 527 1 0.609 15 Sulfate 40700 40400 1 0.639 15 L1636176-05 Original Sample (OS) • Duplicate (DUP) (OS) L1636176-05 07/19/23 02:36 • (DUP) R3950697-6 07/19/23 02:49 Original Result DUP Result Dilution DUP RPD DUP Qualifier DUP RPD Limits Analyte ug/l ug/l %% Nitrate 55.7 55.8 1 0.179 J 15 Sulfate 760 760 1 0.0132 J 15 Laboratory Control Sample (LCS) (LCS) R3950697-2 07/18/23 14:03 Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier Analyte ug/l ug/l %% Nitrate 8000 7810 97.6 80.0-120 Sulfate 40000 39600 99.1 80.0-120 L1634561-01 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1634561-01 07/18/23 20:30 • (MS) R3950697-4 07/18/23 20:55 • (MSD) R3950697-5 07/18/23 21:07 Spike Amount Original Result MS Result MSD Result MS Rec.MSD Rec.Dilution Rec. Limits MS Qualifier MSD Qualifier RPD RPD Limits Analyte ug/l ug/l ug/l ug/l %%%%% Nitrate 5000 524 5590 5590 101 101 1 80.0-120 0.0358 15 Sulfate 50000 40700 88100 88300 94.7 95.1 1 80.0-120 0.225 15 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:12 37 of 60 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:23 37 of 60 QUALITY CONTROL SUMMARYWG2097097 Wet Chemistry by Method 9056A L1635814-01 L1636176-05 Original Sample (OS) • Matrix Spike (MS) (OS) L1636176-05 07/19/23 02:36 • (MS) R3950697-7 07/19/23 03:01 Spike Amount Original Result MS Result MS Rec.Dilution Rec. Limits MS Qualifier Analyte ug/l ug/l ug/l %% Nitrate 5000 55.7 4860 96.1 1 80.0-120 Sulfate 50000 760 48200 94.9 1 80.0-120 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:12 38 of 60 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:23 38 of 60 QUALITY CONTROL SUMMARYWG2098891 Wet Chemistry by Method 9056A L1635814-02 Method Blank (MB) (MB) R3951444-1 07/21/23 00:30 MB Result MB Qualifier MB MDL MB RDL Analyte ug/l ug/l ug/l Nitrate U 48.0 100 Sulfate U 594 5000 L1636770-01 Original Sample (OS) • Duplicate (DUP) (OS) L1636770-01 07/21/23 00:56 • (DUP) R3951444-3 07/21/23 01:52 Original Result DUP Result Dilution DUP RPD DUP Qualifier DUP RPD Limits Analyte ug/l ug/l %% Nitrate 764 768 1 0.418 15 Sulfate 73100 72900 1 0.272 15 L1635263-03 Original Sample (OS) • Duplicate (DUP) (OS) L1635263-03 07/21/23 06:54 • (DUP) R3951444-5 07/21/23 07:06 Original Result DUP Result Dilution DUP RPD DUP Qualifier DUP RPD Limits Analyte ug/l ug/l %% Nitrate U U 1 0.000 15 Sulfate 1150 1110 1 3.43 J 15 Laboratory Control Sample (LCS) (LCS) R3951444-2 07/21/23 00:43 Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier Analyte ug/l ug/l %% Nitrate 8000 7870 98.3 80.0-120 Sulfate 40000 39800 99.6 80.0-120 L1636770-01 Original Sample (OS) • Matrix Spike (MS) (OS) L1636770-01 07/21/23 00:56 • (MS) R3951444-4 07/21/23 02:05 Spike Amount Original Result MS Result MS Rec.Dilution Rec. Limits MS Qualifier Analyte ug/l ug/l ug/l %% Nitrate 5000 764 5880 102 1 80.0-120 Sulfate 50000 73100 118000 89.9 1 80.0-120 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:12 39 of 60 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:23 39 of 60 QUALITY CONTROL SUMMARYWG2098891 Wet Chemistry by Method 9056A L1635814-02 L1635630-03 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1635630-03 07/21/23 07:19 • (MS) R3951444-6 07/21/23 07:32 • (MSD) R3951444-7 07/21/23 07:44 Spike Amount Original Result MS Result MSD Result MS Rec.MSD Rec.Dilution Rec. Limits MS Qualifier MSD Qualifier RPD RPD Limits Analyte ug/l ug/l ug/l ug/l %%%%% Nitrate 5000 92.1 5220 5250 103 103 1 80.0-120 0.460 15 Sulfate 50000 202000 244000 244000 83.0 84.0 1 80.0-120 E E 0.202 15 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:12 40 of 60 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:23 40 of 60 QUALITY CONTROL SUMMARYWG2099142 Wet Chemistry by Method 9056A L1635814-04,05,07,08,10,11 Method Blank (MB) (MB) R3951911-1 07/21/23 09:59 MB Result MB Qualifier MB MDL MB RDL Analyte ug/l ug/l ug/l Nitrate U 48.0 100 Sulfate U 594 5000 L1637509-01 Original Sample (OS) • Duplicate (DUP) (OS) L1637509-01 07/21/23 11:29 • (DUP) R3951911-5 07/21/23 14:28 Original Result DUP Result Dilution DUP RPD DUP Qualifier DUP RPD Limits Analyte ug/l ug/l %% Nitrate 56.2 59.3 1 5.37 J 15 Sulfate 1320 1300 1 1.22 J 15 L1635814-05 Original Sample (OS) • Duplicate (DUP) (OS) L1635814-05 07/21/23 17:30 • (DUP) R3951911-9 07/21/23 18:38 Original Result DUP Result Dilution DUP RPD DUP Qualifier DUP RPD Limits Analyte ug/l ug/l %% Nitrate 923 901 1 2.35 15 Sulfate 15400 15400 1 0.356 15 Laboratory Control Sample (LCS) (LCS) R3951911-2 07/21/23 10:51 Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier Analyte ug/l ug/l %% Nitrate 8000 7730 96.6 80.0-120 Sulfate 40000 39100 97.8 80.0-120 L1637509-01 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1637509-01 07/21/23 11:29 • (MS) R3951911-3 07/21/23 14:03 • (MSD) R3951911-4 07/21/23 14:15 Spike Amount Original Result MS Result MSD Result MS Rec.MSD Rec.Dilution Rec. Limits MS Qualifier MSD Qualifier RPD RPD Limits Analyte ug/l ug/l ug/l ug/l %%%%% Nitrate 5000 56.2 4440 4440 87.8 87.7 1 80.0-120 0.0878 15 Sulfate 50000 1320 46100 46500 89.6 90.3 1 80.0-120 0.744 15 Sample Narrative: MS: Matrix spike failure due to matrix. 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:12 41 of 60 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:23 41 of 60 QUALITY CONTROL SUMMARYWG2099142 Wet Chemistry by Method 9056A L1635814-04,05,07,08,10,11 L1637509-01 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1637509-01 07/21/23 11:29 • (MS) R3951911-3 07/21/23 14:03 • (MSD) R3951911-4 07/21/23 14:15 Spike Amount Original Result MS Result MSD Result MS Rec.MSD Rec.Dilution Rec. Limits MS Qualifier MSD Qualifier RPD RPD Limits Analyte ug/l ug/l ug/l ug/l %%%%% MSD: Matrix spike failure due to matrix. L1635814-05 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1635814-05 07/21/23 17:30 • (MS) R3951911-7 07/21/23 18:11 • (MSD) R3951911-8 07/21/23 18:24 Spike Amount Original Result MS Result MSD Result MS Rec.MSD Rec.Dilution Rec. Limits MS Qualifier MSD Qualifier RPD RPD Limits Analyte ug/l ug/l ug/l ug/l %%%%% Nitrate 5000 923 5970 5960 101 101 1 80.0-120 0.137 15 Sulfate 50000 15400 64200 64200 97.5 97.5 1 80.0-120 0.0308 15 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:12 42 of 60 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:23 42 of 60 QUALITY CONTROL SUMMARYWG2100976 Wet Chemistry by Method 9060A L1635814-01,02,04,05,07,08,10,11 Method Blank (MB) (MB) R3953727-2 07/27/23 11:09 MB Result MB Qualifier MB MDL MB RDL Analyte ug/l ug/l ug/l TOC (Total Organic Carbon)135 J 102 1000 L1634874-08 Original Sample (OS) • Duplicate (DUP) (OS) L1634874-08 07/27/23 11:51 • (DUP) R3953727-3 07/27/23 12:04 Original Result DUP Result Dilution DUP RPD DUP Qualifier DUP RPD Limits Analyte ug/l ug/l %% TOC (Total Organic Carbon)758 602 1 23.0 J P1 20 L1635795-01 Original Sample (OS) • Duplicate (DUP) (OS) L1635795-01 07/27/23 14:50 • (DUP) R3953727-4 07/27/23 15:14 Original Result DUP Result Dilution DUP RPD DUP Qualifier DUP RPD Limits Analyte ug/l ug/l %% TOC (Total Organic Carbon)15400 15100 1 1.64 20 Laboratory Control Sample (LCS) (LCS) R3953727-1 07/27/23 10:57 Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier Analyte ug/l ug/l %% TOC (Total Organic Carbon)25000 25100 100 85.0-115 L1635568-02 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1635568-02 07/27/23 13:15 • (MS) R3953727-5 07/27/23 22:08 • (MSD) R3953727-6 07/27/23 22:26 Spike Amount Original Result MS Result MSD Result MS Rec.MSD Rec.Dilution Rec. Limits MS Qualifier MSD Qualifier RPD RPD Limits Analyte ug/l ug/l ug/l ug/l %%%%% TOC (Total Organic Carbon)25000 6680 32700 32900 104 105 1 80.0-120 0.610 20 L1635814-05 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1635814-05 07/27/23 18:04 • (MS) R3953727-7 07/27/23 22:46 • (MSD) R3953727-8 07/27/23 23:10 Spike Amount Original Result MS Result MSD Result MS Rec.MSD Rec.Dilution Rec. Limits MS Qualifier MSD Qualifier RPD RPD Limits Analyte ug/l ug/l ug/l ug/l %%%%% TOC (Total Organic Carbon)25000 591 26000 25600 102 100 1 80.0-120 1.43 20 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:12 43 of 60 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:23 43 of 60 QUALITY CONTROL SUMMARYWG2100982 Wet Chemistry by Method 9060A L1635814-12,13 Method Blank (MB) (MB) R3953224-2 07/26/23 12:50 MB Result MB Qualifier MB MDL MB RDL Analyte ug/l ug/l ug/l TOC (Total Organic Carbon)217 J 102 1000 L1635264-01 Original Sample (OS) • Duplicate (DUP) (OS) L1635264-01 07/26/23 15:16 • (DUP) R3953224-5 07/26/23 15:29 Original Result DUP Result Dilution DUP RPD DUP Qualifier DUP RPD Limits Analyte ug/l ug/l %% TOC (Total Organic Carbon)2040 2020 1 1.08 20 L1636086-01 Original Sample (OS) • Duplicate (DUP) (OS) L1636086-01 07/26/23 18:26 • (DUP) R3953224-6 07/26/23 18:45 Original Result DUP Result Dilution DUP RPD DUP Qualifier DUP RPD Limits Analyte ug/l ug/l %% TOC (Total Organic Carbon)47900 48100 1 0.458 20 Laboratory Control Sample (LCS) (LCS) R3953224-1 07/26/23 12:37 Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier Analyte ug/l ug/l %% TOC (Total Organic Carbon)25000 24700 98.7 85.0-115 L1633804-01 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1633804-01 07/26/23 15:01 • (MS) R3953224-7 07/27/23 01:56 • (MSD) R3953224-8 07/27/23 02:18 Spike Amount Original Result MS Result MSD Result MS Rec.MSD Rec.Dilution Rec. Limits MS Qualifier MSD Qualifier RPD RPD Limits Analyte ug/l ug/l ug/l ug/l %%%%% TOC (Total Organic Carbon)25000 279 25000 25500 99.0 101 1 80.0-120 1.78 20 L1633612-01 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1633612-01 07/26/23 13:58 • (MS) R3953224-3 07/26/23 14:23 • (MSD) R3953224-4 07/26/23 14:49 Spike Amount Original Result MS Result MSD Result MS Rec.MSD Rec.Dilution Rec. Limits MS Qualifier MSD Qualifier RPD RPD Limits Analyte ug/l ug/l ug/l ug/l %%%%% TOC (Total Organic Carbon)25000 14000 39000 40200 99.7 105 1 80.0-120 3.11 20 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:12 44 of 60 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:23 44 of 60 QUALITY CONTROL SUMMARYWG2096554 Metals (ICP) by Method 6010D L1635814-01,02,04,05,07,08,10,11,12,13 Method Blank (MB) (MB) R3951811-1 07/23/23 13:14 MB Result MB Qualifier MB MDL MB RDL Analyte ug/l ug/l ug/l Iron U 18.0 100 Laboratory Control Sample (LCS) (LCS) R3951811-2 07/23/23 13:16 Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier Analyte ug/l ug/l %% Iron 10000 11100 111 80.0-120 L1635814-05 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1635814-05 07/23/23 13:19 • (MS) R3951811-4 07/23/23 13:25 • (MSD) R3951811-5 07/23/23 13:27 Spike Amount Original Result MS Result MSD Result MS Rec.MSD Rec.Dilution Rec. Limits MS Qualifier MSD Qualifier RPD RPD Limits Analyte ug/l ug/l ug/l ug/l %%%%% Iron 10000 2300 13000 13000 107 107 1 75.0-125 0.0139 20 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:12 45 of 60 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:23 45 of 60 QUALITY CONTROL SUMMARYWG2096697 Volatile Organic Compounds (GC) by Method RSK175 L1635814-01,02,04,05,07,08,10,11,12 Method Blank (MB) (MB) R3949820-2 07/18/23 12:36 MB Result MB Qualifier MB MDL MB RDL Analyte ug/l ug/l ug/l Methane U 2.91 10.0 L1635630-06 Original Sample (OS) • Duplicate (DUP) (OS) L1635630-06 07/18/23 13:04 • (DUP) R3949820-3 07/18/23 13:10 Original Result DUP Result Dilution DUP RPD DUP Qualifier DUP RPD Limits Analyte ug/l ug/l %% Methane 152 143 1 6.10 20 L1635814-12 Original Sample (OS) • Duplicate (DUP) (OS) L1635814-12 07/18/23 13:54 • (DUP) R3949820-4 07/18/23 14:15 Original Result DUP Result Dilution DUP RPD DUP Qualifier DUP RPD Limits Analyte ug/l ug/l %% Methane 92.6 95.5 1 3.08 20 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R3949820-1 07/18/23 12:33 • (LCSD) R3949820-9 07/18/23 14:41 Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits Analyte ug/l ug/l ug/l %%%%% Methane 67.8 70.2 69.2 104 102 85.0-115 1.43 20 L1635630-03 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1635630-03 07/18/23 12:53 • (MS) R3949820-5 07/18/23 14:23 • (MSD) R3949820-6 07/18/23 14:26 Spike Amount Original Result MS Result MSD Result MS Rec.MSD Rec.Dilution Rec. Limits MS Qualifier MSD Qualifier RPD RPD Limits Analyte ug/l ug/l ug/l ug/l %%%%% Methane 67.8 51.7 132 137 118 126 1 50.0-150 3.72 20 L1635814-05 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1635814-05 07/18/23 13:20 • (MS) R3949820-7 07/18/23 14:29 • (MSD) R3949820-8 07/18/23 14:38 Spike Amount Original Result MS Result MSD Result MS Rec.MSD Rec.Dilution Rec. Limits MS Qualifier MSD Qualifier RPD RPD Limits Analyte ug/l ug/l ug/l ug/l %%%%% Methane 67.8 U 75.0 80.2 111 118 1 50.0-150 6.70 20 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:12 46 of 60 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:23 46 of 60 QUALITY CONTROL SUMMARYWG2097489 Volatile Organic Compounds (GC) by Method RSK175 L1635814-13 Method Blank (MB) (MB) R3950328-2 07/19/23 10:37 MB Result MB Qualifier MB MDL MB RDL Analyte ug/l ug/l ug/l Methane U 2.91 10.0 L1635814-13 Original Sample (OS) • Duplicate (DUP) (OS) L1635814-13 07/19/23 10:41 • (DUP) R3950328-3 07/19/23 13:08 Original Result DUP Result Dilution DUP RPD DUP Qualifier DUP RPD Limits Analyte ug/l ug/l %% Methane U U 1 0.000 20 L1636495-04 Original Sample (OS) • Duplicate (DUP) (OS) L1636495-04 07/19/23 13:22 • (DUP) R3950328-4 07/19/23 14:33 Original Result DUP Result Dilution DUP RPD DUP Qualifier DUP RPD Limits Analyte ug/l ug/l %% Methane 896 847 1 5.62 20 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R3950328-1 07/19/23 10:33 • (LCSD) R3950328-5 07/19/23 14:45 Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits Analyte ug/l ug/l ug/l %%%%% Methane 67.8 70.5 66.1 104 97.5 85.0-115 6.44 20 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:12 47 of 60 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:23 47 of 60 QUALITY CONTROL SUMMARYWG2095840 Volatile Organic Compounds (GC/MS) by Method 6200B-1997/6200B-2011L1635814-01,02,03,04,05,06,07,08,09,10,11,12,13 Method Blank (MB) (MB) R3949696-4 07/16/23 15:46 MB Result MB Qualifier MB MDL MB RDL Analyte ug/l ug/l ug/l Acetone U 11.3 50.0 Acrolein U 2.54 50.0 Acrylonitrile U 0.671 10.0 Benzene U 0.0941 1.00 Bromobenzene U 0.118 1.00 Bromodichloromethane U 0.136 1.00 Bromoform U 0.129 1.00 Bromomethane U 0.605 5.00 n-Butylbenzene U 0.157 1.00 sec-Butylbenzene U 0.125 1.00 tert-Butylbenzene U 0.127 1.00 Carbon tetrachloride U 0.128 1.00 Chlorobenzene U 0.116 1.00 Chlorodibromomethane U 0.140 1.00 Chloroethane U 0.192 5.00 Chloroform U 0.111 5.00 Chloromethane U 0.960 2.50 2-Chlorotoluene U 0.106 1.00 4-Chlorotoluene U 0.114 1.00 1,2-Dibromo-3-Chloropropane U 0.276 5.00 1,2-Dibromoethane U 0.126 1.00 Dibromomethane U 0.122 1.00 1,2-Dichlorobenzene U 0.107 1.00 1,3-Dichlorobenzene U 0.110 1.00 1,4-Dichlorobenzene U 0.120 1.00 Dichlorodifluoromethane U 0.374 5.00 1,1-Dichloroethane U 0.100 1.00 1,2-Dichloroethane U 0.0819 1.00 1,1-Dichloroethene U 0.188 1.00 cis-1,2-Dichloroethene U 0.126 1.00 trans-1,2-Dichloroethene U 0.149 1.00 1,2-Dichloropropane U 0.149 1.00 1,1-Dichloropropene U 0.142 1.00 1,3-Dichloropropane U 0.110 1.00 2,2-Dichloropropane U 0.161 1.00 Di-isopropyl ether U 0.105 1.00 Ethylbenzene U 0.137 1.00 Hexachloro-1,3-butadiene U 0.337 1.00 Isopropylbenzene U 0.105 1.00 p-Isopropyltoluene U 0.120 1.00 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:12 48 of 60 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:23 48 of 60 QUALITY CONTROL SUMMARYWG2095840 Volatile Organic Compounds (GC/MS) by Method 6200B-1997/6200B-2011L1635814-01,02,03,04,05,06,07,08,09,10,11,12,13 Method Blank (MB) (MB) R3949696-4 07/16/23 15:46 MB Result MB Qualifier MB MDL MB RDL Analyte ug/l ug/l ug/l 2-Butanone (MEK)U 1.19 10.0 Methylene Chloride U 0.430 5.00 4-Methyl-2-pentanone (MIBK)U 0.478 10.0 Methyl tert-butyl ether U 0.101 1.00 Naphthalene U 1.00 5.00 n-Propylbenzene U 0.0993 1.00 Styrene U 0.118 1.00 1,1,1,2-Tetrachloroethane U 0.147 1.00 1,1,2,2-Tetrachloroethane U 0.133 1.00 Tetrachloroethene U 0.300 1.00 Toluene U 0.278 1.00 1,2,3-Trichlorobenzene U 0.230 1.00 1,2,4-Trichlorobenzene U 0.481 1.00 1,1,1-Trichloroethane U 0.149 1.00 1,1,2-Trichloroethane U 0.158 1.00 Trichloroethene U 0.190 1.00 Trichlorofluoromethane U 0.160 5.00 1,2,3-Trichloropropane U 0.237 2.50 1,2,4-Trimethylbenzene U 0.322 1.00 1,3,5-Trimethylbenzene U 0.104 1.00 Vinyl chloride U 0.234 1.00 o-Xylene U 0.174 1.00 m&p-Xylenes U 0.430 2.00 Xylenes, Total U 0.174 3.00 Ethyl tert-butyl ether U 0.101 1.00 t-Amyl Alcohol U 4.90 50.0 tert-Butyl Formate U 4.51 20.0 tert-Amyl Methyl Ether U 0.195 1.00 (S) Toluene-d8 103 80.0-120 (S) 4-Bromofluorobenzene 93.6 77.0-126 (S) 1,2-Dichloroethane-d4 108 70.0-130 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R3949696-1 07/16/23 13:27 • (LCSD) R3949696-2 07/16/23 13:47 Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits Analyte ug/l ug/l ug/l %%%%% Acetone 25.0 24.8 21.1 99.2 84.4 19.0-160 16.1 27 Acrolein 25.0 17.3 16.3 69.2 65.2 10.0-160 5.95 26 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:12 49 of 60 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:23 49 of 60 QUALITY CONTROL SUMMARYWG2095840 Volatile Organic Compounds (GC/MS) by Method 6200B-1997/6200B-2011L1635814-01,02,03,04,05,06,07,08,09,10,11,12,13 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R3949696-1 07/16/23 13:27 • (LCSD) R3949696-2 07/16/23 13:47 Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits Analyte ug/l ug/l ug/l %%%%% Acrylonitrile 25.0 28.2 25.0 113 100 55.0-149 12.0 20 Benzene 5.00 5.04 4.68 101 93.6 70.0-123 7.41 20 Bromobenzene 5.00 4.66 4.39 93.2 87.8 73.0-121 5.97 20 Bromodichloromethane 5.00 5.05 4.80 101 96.0 75.0-120 5.08 20 Bromoform 5.00 4.81 4.40 96.2 88.0 68.0-132 8.90 20 Bromomethane 5.00 4.87 4.60 97.4 92.0 10.0-160 5.70 25 n-Butylbenzene 5.00 4.03 3.83 80.6 76.6 73.0-125 5.09 20 sec-Butylbenzene 5.00 4.39 3.98 87.8 79.6 75.0-125 9.80 20 tert-Butylbenzene 5.00 4.56 4.21 91.2 84.2 76.0-124 7.98 20 Carbon tetrachloride 5.00 4.99 4.54 99.8 90.8 68.0-126 9.44 20 Chlorobenzene 5.00 4.94 4.69 98.8 93.8 80.0-121 5.19 20 Chlorodibromomethane 5.00 4.85 4.72 97.0 94.4 77.0-125 2.72 20 Chloroethane 5.00 4.67 4.39 93.4 87.8 47.0-150 6.18 20 Chloroform 5.00 5.11 4.80 102 96.0 73.0-120 6.26 20 Chloromethane 5.00 5.04 4.48 101 89.6 41.0-142 11.8 20 2-Chlorotoluene 5.00 4.80 4.33 96.0 86.6 76.0-123 10.3 20 4-Chlorotoluene 5.00 4.63 4.34 92.6 86.8 75.0-122 6.47 20 1,2-Dibromo-3-Chloropropane 5.00 4.58 3.96 91.6 79.2 58.0-134 14.5 20 1,2-Dibromoethane 5.00 5.00 4.67 100 93.4 80.0-122 6.83 20 Dibromomethane 5.00 5.25 4.80 105 96.0 80.0-120 8.96 20 1,2-Dichlorobenzene 5.00 4.72 4.44 94.4 88.8 79.0-121 6.11 20 1,3-Dichlorobenzene 5.00 4.58 4.38 91.6 87.6 79.0-120 4.46 20 1,4-Dichlorobenzene 5.00 4.66 4.34 93.2 86.8 79.0-120 7.11 20 Dichlorodifluoromethane 5.00 4.74 4.38 94.8 87.6 51.0-149 7.89 20 1,1-Dichloroethane 5.00 5.07 4.67 101 93.4 70.0-126 8.21 20 1,2-Dichloroethane 5.00 5.65 5.25 113 105 70.0-128 7.34 20 1,1-Dichloroethene 5.00 4.72 4.22 94.4 84.4 71.0-124 11.2 20 cis-1,2-Dichloroethene 5.00 4.83 4.44 96.6 88.8 73.0-120 8.41 20 trans-1,2-Dichloroethene 5.00 4.74 4.44 94.8 88.8 73.0-120 6.54 20 1,2-Dichloropropane 5.00 5.32 5.11 106 102 77.0-125 4.03 20 1,1-Dichloropropene 5.00 5.00 4.73 100 94.6 74.0-126 5.55 20 1,3-Dichloropropane 5.00 5.05 4.92 101 98.4 80.0-120 2.61 20 2,2-Dichloropropane 5.00 3.53 4.16 70.6 83.2 58.0-130 16.4 20 Di-isopropyl ether 5.00 5.50 5.09 110 102 58.0-138 7.74 20 Ethylbenzene 5.00 4.56 4.37 91.2 87.4 79.0-123 4.26 20 Hexachloro-1,3-butadiene 5.00 4.19 3.99 83.8 79.8 54.0-138 4.89 20 Isopropylbenzene 5.00 4.59 4.18 91.8 83.6 76.0-127 9.35 20 p-Isopropyltoluene 5.00 4.47 3.95 89.4 79.0 76.0-125 12.4 20 2-Butanone (MEK)25.0 27.5 25.6 110 102 44.0-160 7.16 20 Methylene Chloride 5.00 4.90 4.34 98.0 86.8 67.0-120 12.1 20 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:12 50 of 60 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:23 50 of 60 QUALITY CONTROL SUMMARYWG2095840 Volatile Organic Compounds (GC/MS) by Method 6200B-1997/6200B-2011L1635814-01,02,03,04,05,06,07,08,09,10,11,12,13 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R3949696-1 07/16/23 13:27 • (LCSD) R3949696-2 07/16/23 13:47 Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits Analyte ug/l ug/l ug/l %%%%% 4-Methyl-2-pentanone (MIBK)25.0 29.2 27.5 117 110 68.0-142 6.00 20 Methyl tert-butyl ether 5.00 4.88 4.44 97.6 88.8 68.0-125 9.44 20 Naphthalene 5.00 4.45 3.93 89.0 78.6 54.0-135 12.4 20 n-Propylbenzene 5.00 4.63 4.30 92.6 86.0 77.0-124 7.39 20 Styrene 5.00 4.46 4.11 89.2 82.2 73.0-130 8.17 20 1,1,1,2-Tetrachloroethane 5.00 4.66 4.58 93.2 91.6 75.0-125 1.73 20 1,1,2,2-Tetrachloroethane 5.00 4.08 4.46 81.6 89.2 65.0-130 8.90 20 Tetrachloroethene 5.00 4.70 4.57 94.0 91.4 72.0-132 2.80 20 Toluene 5.00 4.73 4.56 94.6 91.2 79.0-120 3.66 20 1,2,3-Trichlorobenzene 5.00 4.40 3.88 88.0 77.6 50.0-138 12.6 20 1,2,4-Trichlorobenzene 5.00 4.19 3.86 83.8 77.2 57.0-137 8.20 20 1,1,1-Trichloroethane 5.00 4.95 4.43 99.0 88.6 73.0-124 11.1 20 1,1,2-Trichloroethane 5.00 4.82 4.87 96.4 97.4 80.0-120 1.03 20 Trichloroethene 5.00 5.87 4.94 117 98.8 78.0-124 17.2 20 Trichlorofluoromethane 5.00 4.78 4.65 95.6 93.0 59.0-147 2.76 20 1,2,3-Trichloropropane 5.00 5.11 4.63 102 92.6 73.0-130 9.86 20 1,2,4-Trimethylbenzene 5.00 4.44 4.06 88.8 81.2 76.0-121 8.94 20 1,3,5-Trimethylbenzene 5.00 4.63 4.16 92.6 83.2 76.0-122 10.7 20 Vinyl chloride 5.00 4.71 3.98 94.2 79.6 67.0-131 16.8 20 o-Xylene 5.00 4.57 4.19 91.4 83.8 80.0-122 8.68 20 m&p-Xylenes 10.0 9.41 8.73 94.1 87.3 80.0-122 7.50 20 Xylenes, Total 15.0 14.0 12.9 93.3 86.0 79.0-123 8.18 20 Ethyl tert-butyl ether 5.00 5.17 4.73 103 94.6 63.0-138 8.89 20 t-Amyl Alcohol 25.0 21.0 19.9 84.0 79.6 30.0-160 5.38 25 tert-Amyl Methyl Ether 5.00 4.82 4.37 96.4 87.4 66.0-125 9.79 20 (S) Toluene-d8 104 104 80.0-120 (S) 4-Bromofluorobenzene 98.1 97.2 77.0-126 (S) 1,2-Dichloroethane-d4 110 109 70.0-130 Laboratory Control Sample (LCS) (LCS) R3949696-3 07/16/23 15:27 Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier Analyte ug/l ug/l %% tert-Butyl Formate 100 102 102 10.0-160 (S) Toluene-d8 103 80.0-120 (S) 4-Bromofluorobenzene 99.6 77.0-126 (S) 1,2-Dichloroethane-d4 108 70.0-130 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:12 51 of 60 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:23 51 of 60 QUALITY CONTROL SUMMARYWG2095840 Volatile Organic Compounds (GC/MS) by Method 6200B-1997/6200B-2011L1635814-01,02,03,04,05,06,07,08,09,10,11,12,13 L1635814-05 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1635814-05 07/16/23 19:37 • (MS) R3949696-5 07/16/23 22:29 • (MSD) R3949696-6 07/16/23 22:48 Spike Amount Original Result MS Result MSD Result MS Rec.MSD Rec.Dilution Rec. Limits MS Qualifier MSD Qualifier RPD RPD Limits Analyte ug/l ug/l ug/l ug/l %%%%% Acetone 25.0 U 15.8 27.2 63.2 109 1 10.0-160 J3 53.0 35 Acrolein 25.0 U 19.3 26.5 77.2 106 1 10.0-160 31.4 39 Acrylonitrile 25.0 U 19.7 25.9 78.8 104 1 21.0-160 27.2 32 Benzene 5.00 U 3.65 3.76 73.0 75.2 1 17.0-158 2.97 27 Bromobenzene 5.00 U 3.76 3.98 75.2 79.6 1 30.0-149 5.68 28 Bromodichloromethane 5.00 U 3.95 4.35 79.0 87.0 1 31.0-150 9.64 27 Bromoform 5.00 U 3.58 4.37 71.6 87.4 1 29.0-150 19.9 29 Bromomethane 5.00 U 2.99 3.22 59.8 64.4 1 10.0-160 7.41 38 n-Butylbenzene 5.00 U 3.27 3.43 65.4 68.6 1 31.0-150 4.78 30 sec-Butylbenzene 5.00 U 3.62 3.53 72.4 70.6 1 33.0-155 2.52 29 tert-Butylbenzene 5.00 U 3.67 3.65 73.4 73.0 1 34.0-153 0.546 28 Carbon tetrachloride 5.00 U 3.83 3.86 76.6 77.2 1 23.0-159 0.780 28 Chlorobenzene 5.00 U 3.76 3.98 75.2 79.6 1 33.0-152 5.68 27 Chlorodibromomethane 5.00 U 3.80 4.51 76.0 90.2 1 37.0-149 17.1 27 Chloroethane 5.00 U 3.12 3.27 62.4 65.4 1 10.0-160 4.69 30 Chloroform 5.00 U 3.79 4.25 75.8 85.0 1 29.0-154 11.4 28 Chloromethane 5.00 U 3.16 3.27 63.2 65.4 1 10.0-160 3.42 29 2-Chlorotoluene 5.00 U 3.73 3.81 74.6 76.2 1 32.0-153 2.12 28 4-Chlorotoluene 5.00 U 3.64 3.81 72.8 76.2 1 32.0-150 4.56 28 1,2-Dibromo-3-Chloropropane 5.00 U 3.55 4.08 71.0 81.6 1 22.0-151 13.9 34 1,2-Dibromoethane 5.00 U 3.78 4.37 75.6 87.4 1 34.0-147 14.5 27 Dibromomethane 5.00 U 3.85 4.51 77.0 90.2 1 30.0-151 15.8 27 1,2-Dichlorobenzene 5.00 U 3.69 4.13 73.8 82.6 1 34.0-149 11.3 28 1,3-Dichlorobenzene 5.00 U 3.70 3.99 74.0 79.8 1 36.0-146 7.54 27 1,4-Dichlorobenzene 5.00 U 3.66 4.01 73.2 80.2 1 35.0-142 9.13 27 Dichlorodifluoromethane 5.00 U 3.06 3.02 61.2 60.4 1 10.0-160 1.32 29 1,1-Dichloroethane 5.00 U 3.82 3.99 76.4 79.8 1 25.0-158 4.35 27 1,2-Dichloroethane 5.00 U 4.09 4.75 81.8 95.0 1 29.0-151 14.9 27 1,1-Dichloroethene 5.00 U 3.31 3.35 66.2 67.0 1 11.0-160 1.20 29 cis-1,2-Dichloroethene 5.00 U 3.47 3.83 69.4 76.6 1 10.0-160 9.86 27 trans-1,2-Dichloroethene 5.00 U 3.22 3.28 64.4 65.6 1 17.0-153 1.85 27 1,2-Dichloropropane 5.00 U 4.07 4.34 81.4 86.8 1 30.0-156 6.42 27 1,1-Dichloropropene 5.00 U 3.57 3.76 71.4 75.2 1 25.0-158 5.18 27 1,3-Dichloropropane 5.00 U 3.97 4.37 79.4 87.4 1 38.0-147 9.59 27 2,2-Dichloropropane 5.00 U 3.78 3.76 75.6 75.2 1 24.0-152 0.531 29 Di-isopropyl ether 5.00 U 4.10 4.75 82.0 95.0 1 21.0-160 14.7 28 Ethylbenzene 5.00 U 3.51 3.83 70.2 76.6 1 30.0-155 8.72 27 Hexachloro-1,3-butadiene 5.00 U 3.53 3.91 70.6 78.2 1 20.0-154 10.2 34 Isopropylbenzene 5.00 U 3.48 3.62 69.6 72.4 1 28.0-157 3.94 27 p-Isopropyltoluene 5.00 U 3.60 3.47 72.0 69.4 1 30.0-154 3.68 29 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:12 52 of 60 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:23 52 of 60 QUALITY CONTROL SUMMARYWG2095840 Volatile Organic Compounds (GC/MS) by Method 6200B-1997/6200B-2011L1635814-01,02,03,04,05,06,07,08,09,10,11,12,13 L1635814-05 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1635814-05 07/16/23 19:37 • (MS) R3949696-5 07/16/23 22:29 • (MSD) R3949696-6 07/16/23 22:48 Spike Amount Original Result MS Result MSD Result MS Rec.MSD Rec.Dilution Rec. Limits MS Qualifier MSD Qualifier RPD RPD Limits Analyte ug/l ug/l ug/l ug/l %%%%% 2-Butanone (MEK)25.0 U 18.8 24.3 75.2 97.2 1 10.0-160 25.5 32 Methylene Chloride 5.00 U 3.19 3.85 63.8 77.0 1 23.0-144 18.7 28 4-Methyl-2-pentanone (MIBK)25.0 U 22.0 27.1 88.0 108 1 29.0-160 20.8 29 Methyl tert-butyl ether 5.00 U 3.50 4.38 70.0 87.6 1 28.0-150 22.3 29 Naphthalene 5.00 U 3.57 4.12 71.4 82.4 1 12.0-156 14.3 35 n-Propylbenzene 5.00 U 3.65 3.59 73.0 71.8 1 31.0-154 1.66 28 Styrene 5.00 U 3.16 3.50 63.2 70.0 1 33.0-155 10.2 28 1,1,1,2-Tetrachloroethane 5.00 U 3.68 4.24 73.6 84.8 1 36.0-151 14.1 29 1,1,2,2-Tetrachloroethane 5.00 U 4.02 4.54 80.4 90.8 1 33.0-150 12.1 28 Tetrachloroethene 5.00 U 3.58 3.52 71.6 70.4 1 10.0-160 1.69 27 Toluene 5.00 U 3.66 3.69 73.2 73.8 1 26.0-154 0.816 28 1,2,3-Trichlorobenzene 5.00 U 3.50 4.01 70.0 80.2 1 17.0-150 13.6 36 1,2,4-Trichlorobenzene 5.00 U 3.28 3.96 65.6 79.2 1 24.0-150 18.8 33 1,1,1-Trichloroethane 5.00 U 3.74 3.91 74.8 78.2 1 23.0-160 4.44 28 1,1,2-Trichloroethane 5.00 U 3.92 4.52 78.4 90.4 1 35.0-147 14.2 27 Trichloroethene 5.00 U 3.54 3.87 70.8 77.4 1 10.0-160 8.91 25 Trichlorofluoromethane 5.00 U 3.60 3.58 72.0 71.6 1 17.0-160 0.557 31 1,2,3-Trichloropropane 5.00 U 4.19 4.61 83.8 92.2 1 34.0-151 9.55 29 1,2,4-Trimethylbenzene 5.00 U 3.49 3.59 69.8 71.8 1 26.0-154 2.82 27 1,3,5-Trimethylbenzene 5.00 U 3.61 3.67 72.2 73.4 1 28.0-153 1.65 27 Vinyl chloride 5.00 U 2.92 2.82 58.4 56.4 1 10.0-160 3.48 27 o-Xylene 5.00 U 3.39 3.73 67.8 74.6 1 45.0-144 9.55 26 m&p-Xylenes 10.0 U 6.94 7.39 69.4 73.9 1 43.0-146 6.28 26 Xylenes, Total 15.0 U 10.3 11.1 68.7 74.0 1 29.0-154 7.48 28 Ethyl tert-butyl ether 5.00 U 3.74 4.60 74.8 92.0 1 10.0-160 20.6 37 tert-Amyl Methyl Ether 5.00 U 3.47 4.29 69.4 85.8 1 10.0-160 21.1 37 (S) Toluene-d8 107 102 80.0-120 (S) 4-Bromofluorobenzene 95.1 98.4 77.0-126 (S) 1,2-Dichloroethane-d4 109 113 70.0-130 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:12 53 of 60 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:23 53 of 60 QUALITY CONTROL SUMMARYWG2096917 Volatile Organic Compounds (GC/MS) by Method 6200B-1997/6200B-2011L1635814-01,02,03,04,05,06,07,08,09,10,11,12,13 Method Blank (MB) (MB) R3951003-4 07/20/23 20:00 MB Result MB Qualifier MB MDL MB RDL Analyte ug/l ug/l ug/l ethanol U 42.0 100 3,3-Dimethyl-1-butanol U 4.51 100 tert-Butyl alcohol U 4.06 5.00 (S) Toluene-d8 102 80.0-120 (S) 4-Bromofluorobenzene 99.2 77.0-126 (S) 1,2-Dichloroethane-d4 120 70.0-130 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R3951003-1 07/20/23 18:18 • (LCSD) R3951003-2 07/20/23 18:39 Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits Analyte ug/l ug/l ug/l %%%%% ethanol 250 265 268 106 107 10.0-160 1.13 30 tert-Butyl alcohol 25.0 26.8 26.0 107 104 27.0-160 3.03 30 (S) Toluene-d8 96.8 97.8 80.0-120 (S) 4-Bromofluorobenzene 99.9 101 77.0-126 (S) 1,2-Dichloroethane-d4 117 117 70.0-130 Laboratory Control Sample (LCS) (LCS) R3951003-3 07/20/23 19:19 Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier Analyte ug/l ug/l %% 3,3-Dimethyl-1-butanol 100 90.2 90.2 55.0-148 (S) Toluene-d8 99.0 80.0-120 (S) 4-Bromofluorobenzene 101 77.0-126 (S) 1,2-Dichloroethane-d4 116 70.0-130 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:12 54 of 60 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:23 54 of 60 QUALITY CONTROL SUMMARYWG2098245 EDB / DBCP by Method 8011 L1635814-01,02,03,04,05,06,07,08,09,10,11,12,13 Method Blank (MB) (MB) R3951669-1 07/21/23 11:41 MB Result MB Qualifier MB MDL MB RDL Analyte ug/l ug/l ug/l Ethylene Dibromide U 0.00536 0.0200 L1637126-01 Original Sample (OS) • Duplicate (DUP) (OS) L1637126-01 07/21/23 12:41 • (DUP) R3951669-3 07/21/23 12:27 Original Result DUP Result Dilution DUP RPD DUP Qualifier DUP RPD Limits Analyte ug/l ug/l %% Ethylene Dibromide U U 1.01 0.000 20 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R3951669-4 07/21/23 13:25 • (LCSD) R3951669-5 07/21/23 13:39 Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits Analyte ug/l ug/l ug/l %%%%% Ethylene Dibromide 0.250 0.217 0.218 86.8 87.2 60.0-140 0.460 20 L1635814-05 Original Sample (OS) • Matrix Spike (MS) (OS) L1635814-05 07/21/23 12:14 • (MS) R3951669-2 07/21/23 12:00 Spike Amount Original Result MS Result MS Rec.Dilution Rec. Limits MS Qualifier Analyte ug/l ug/l ug/l %% Ethylene Dibromide 0.102 U 0.110 108 1.02 64.0-159 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:12 55 of 60 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:23 55 of 60 GLOSSARY OF TERMS Guide to Reading and Understanding Your Laboratory Report The information below is designed to better explain the various terms used in your report of analytical results from the Laboratory. This is not intended as a comprehensive explanation, and if you have additional questions please contact your project representative. Results Disclaimer - Information that may be provided by the customer, and contained within this report, include Permit Limits, Project Name, Sample ID, Sample Matrix, Sample Preservation, Field Blanks, Field Spikes, Field Duplicates, On-Site Data, Sampling Collection Dates/Times, and Sampling Location. Results relate to the accuracy of this information provided, and as the samples are received. Abbreviations and Definitions MDL Method Detection Limit. RDL Reported Detection Limit. Rec.Recovery. RPD Relative Percent Difference. SDG Sample Delivery Group. (S)Surrogate (Surrogate Standard) - Analytes added to every blank, sample, Laboratory Control Sample/Duplicate and Matrix Spike/Duplicate; used to evaluate analytical efficiency by measuring recovery. Surrogates are not expected to be detected in all environmental media. U Not detected at the Reporting Limit (or MDL where applicable). Analyte The name of the particular compound or analysis performed. Some Analyses and Methods will have multiple analytes reported. Dilution If the sample matrix contains an interfering material, the sample preparation volume or weight values differ from the standard, or if concentrations of analytes in the sample are higher than the highest limit of concentration that the laboratory can accurately report, the sample may be diluted for analysis. If a value different than 1 is used in this field, the result reported has already been corrected for this factor. Limits These are the target % recovery ranges or % difference value that the laboratory has historically determined as normal for the method and analyte being reported. Successful QC Sample analysis will target all analytes recovered or duplicated within these ranges. Original Sample The non-spiked sample in the prep batch used to determine the Relative Percent Difference (RPD) from a quality control sample. The Original Sample may not be included within the reported SDG. Qualifier This column provides a letter and/or number designation that corresponds to additional information concerning the result reported. If a Qualifier is present, a definition per Qualifier is provided within the Glossary and Definitions page and potentially a discussion of possible implications of the Qualifier in the Case Narrative if applicable. Result The actual analytical final result (corrected for any sample specific characteristics) reported for your sample. If there was no measurable result returned for a specific analyte, the result in this column may state “ND” (Not Detected) or “BDL” (Below Detectable Levels). The information in the results column should always be accompanied by either an MDL (Method Detection Limit) or RDL (Reporting Detection Limit) that defines the lowest value that the laboratory could detect or report for this analyte. Uncertainty (Radiochemistry)Confidence level of 2 sigma. Case Narrative (Cn) A brief discussion about the included sample results, including a discussion of any non-conformances to protocol observed either at sample receipt by the laboratory from the field or during the analytical process. If present, there will be a section in the Case Narrative to discuss the meaning of any data qualifiers used in the report. Quality Control Summary (Qc) This section of the report includes the results of the laboratory quality control analyses required by procedure or analytical methods to assist in evaluating the validity of the results reported for your samples. These analyses are not being performed on your samples typically, but on laboratory generated material. Sample Chain of Custody (Sc) This is the document created in the field when your samples were initially collected. This is used to verify the time and date of collection, the person collecting the samples, and the analyses that the laboratory is requested to perform. This chain of custody also documents all persons (excluding commercial shippers) that have had control or possession of the samples from the time of collection until delivery to the laboratory for analysis. Sample Results (Sr) This section of your report will provide the results of all testing performed on your samples. These results are provided by sample ID and are separated by the analyses performed on each sample. The header line of each analysis section for each sample will provide the name and method number for the analysis reported. Sample Summary (Ss)This section of the Analytical Report defines the specific analyses performed for each sample ID, including the dates and times of preparation and/or analysis. Qualifier Description B The same analyte is found in the associated blank. E The analyte concentration exceeds the upper limit of the calibration range of the instrument established by the initial calibration (ICAL). J The identification of the analyte is acceptable; the reported value is an estimate. J3 The associated batch QC was outside the established quality control range for precision. P1 RPD value not applicable for sample concentrations less than 5 times the reporting limit. T8 Sample(s) received past/too close to holding time expiration. 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:12 56 of 60 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:23 56 of 60 Pace Analytical National 12065 Lebanon Rd Mount Juliet, TN 37122 Alabama 40660 Nebraska NE-OS-15-05 Alaska 17-026 Nevada TN000032021-1 Arizona AZ0612 New Hampshire 2975 Arkansas 88-0469 New Jersey–NELAP TN002 California 2932 New Mexico ¹TN00003 Colorado TN00003 New York 11742 Connecticut PH-0197 North Carolina Env375 Florida E87487 North Carolina ¹DW21704 Georgia NELAP North Carolina ³41 Georgia ¹923 North Dakota R-140 Idaho TN00003 Ohio–VAP CL0069 Illinois 200008 Oklahoma 9915 Indiana C-TN-01 Oregon TN200002 Iowa 364 Pennsylvania 68-02979 Kansas E-10277 Rhode Island LAO00356 Kentucky ¹ ⁶KY90010 South Carolina 84004002 Kentucky ²16 South Dakota n/a Louisiana AI30792 Tennessee ¹ ⁴2006 Louisiana LA018 Texas T104704245-20-18 Maine TN00003 Texas ⁵LAB0152 Maryland 324 Utah TN000032021-11 Massachusetts M-TN003 Vermont VT2006 Michigan 9958 Virginia 110033 Minnesota 047-999-395 Washington C847 Mississippi TN00003 West Virginia 233 Missouri 340 Wisconsin 998093910 Montana CERT0086 Wyoming A2LA A2LA – ISO 17025 1461.01 AIHA-LAP,LLC EMLAP 100789 A2LA – ISO 17025 ⁵1461.02 DOD 1461.01 Canada 1461.01 USDA P330-15-00234 EPA–Crypto TN00003 ACCREDITATIONS & LOCATIONS ¹ Drinking Water ² Underground Storage Tanks ³ Aquatic Toxicity ⁴ Chemical/Microbiological ⁵ Mold ⁶ Wastewater n/a Accreditation not applicable * Not all certifications held by the laboratory are applicable to the results reported in the attached report. * Accreditation is only applicable to the test methods specified on each scope of accreditation held by Pace Analytical. 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:12 57 of 60 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:23 57 of 60 CHEVRON-NC Data Review 205513, High Point, North Carolina Volatile Organic Compounds, Dissolved Gases, Ethylene dibromide, Metals and Miscellaneous. SDG # L1635814 Analyses Performed By: Pace Analytical National Mount Juliet, TN, USA Report # 50814R Review Level: Level II Project: 30064349.20.81 DATA REVIEW REPORT arcadis.com 2 Summary This data quality assessment summarizes the review of Sample Delivery Group (SDG)# L1635814 for samples collected in association with the Chevron – High Point, North Carolina 205513 site. The review was conducted as a Level II evaluation and included review of data package completeness. Only analytical data associated with constituents of concern were reviewed for this validation. Field documentation was not included in this review. Included with this assessment are the validation annotated sample result sheets, and chain of custody. Analyses were performed on the following samples: Notes: VOC - Volatile organic compounds. RSK-175 – Dissolved Gases. EDB - Ethylene dibromide. MET - Metals. MISC - Miscellaneous include sulfate and total organic carbon (TOC). Sample ID Lab ID Matrix Sample Collection Date Parent Sample Analysis VOC RSK-175 EDB MET MISC MW-3-20230711 L1635814-01 Water 07/11/2023 X X X X X DUP-01-20230711 L1635814-02 Water 07/11/2023 MW-3-20230711 X X X X X EB-01-20230711 L1635814-03 Water 07/11/2023 X X MW-5-20230711 L1635814-04 Water 07/11/2023 X X X X X MW-6-20230712 L1635814-05 Water 07/12/2023 X X X X X EB-02-20230712 L1635814-06 Water 07/12/2023 X X MW-7-20230712 L1635814-07 Water 07/12/2023 X X X X X MW-2-20230712 L1635814-08 Water 07/12/2023 X X X X X EB-03-20230713 L1635814-09 Water 07/13/2023 X X MW-1-20230713 L1635814-10 Water 07/13/2023 X X X X X MW-8-20230713 L1635814-11 Water 07/13/2023 X X X X X MW-9-20230713 L1635814-12 Water 07/13/2023 X X X X X MW-4D-20230713 L1635814-13 Water 07/13/2023 X X X X X DATA REVIEW REPORT arcadis.com 3 Analytical Data Package Documentation The table below is the evaluation of the data package completeness. Items Reviewed Reported Not Required No Yes No Yes 1. Sample receipt condition X X 2. Requested analyses and sample results X X 3. Master tracking list X X 4. Methods of analysis X X 5. Reporting limits X X 6. Sample collection date X X 7. Laboratory sample received date X X 8. Sample preservation verification (as applicable) X X 9. Sample preparation/extraction/analysis dates X X 10. Fully executed Chain-of-Custody (COC) form X X 11. Narrative summary of QA or sample problems provided X X 12. Data Package Completeness and Compliance X X Note: QA - Quality Assurance DATA REVIEW REPORT arcadis.com 4 Organic Analysis Introduction Analyses were performed according to United States Environmental Protection Agency (USEPA) SW-846 Method 6200B, RSK175 and 8011. Data were reviewed in accordance with the method specified criteria, USEPA National Functional Guidelines NFG for Organic Superfund Methods Data Review, EPA-540-R- 20-005 (November 2020), with reference to the historical (USEPA Contract Laboratory Program National Functional Guidelines for Organic Data Review, OSWER 9240.1-05A-P, October 1999, as appropriate). The data review process is an evaluation of data on a technical basis rather than a determination of contract compliance. As such, the standards against which the data are being weighed may differ from those specified in the analytical method. It is assumed that the data package represents the best efforts of the laboratory and had already been subjected to adequate and sufficient quality review prior to submission. During the review process, laboratory qualified and unqualified data are verified against the supporting documentation. Based on this evaluation, qualifier codes may be added, deleted, or modified by the data reviewer. Results are qualified with the following codes in accordance with USEPA National Functional Guidelines: • Concentration (C) Qualifiers U The compound was analyzed for but not detected. The associated value is the compound quantitation limit. B The compound has been found in the sample as well as its associated blank, its presence in the sample may be suspect. • Quantitation (Q) Qualifiers E The compound was quantitated above the calibration range. D Concentration is based on a diluted sample analysis. • Validation Qualifiers J The compound was positively identified; however, the associated numerical value is an estimated concentration only. UJ The compound was not detected above the reported sample quantitation limit. However, the reported limit is approximate and may or may not represent the actual limit of quantitation. JN The analysis indicates the presence of a compound for which there is presumptive evidence to make a tentative identification. The associated numerical value is an estimated concentration only. UB Compound considered non-detect at the listed value due to associated blank contamination. N The analysis indicates the presence of a compound for which there is presumptive evidence to make a tentative identification. R The sample results are rejected. DATA REVIEW REPORT arcadis.com 5 Two facts should be noted by all data users. First, the "R" flag means that the associated value is unusable. In other words, due to significant quality control (QC) problems, the analysis is invalid and provides no information as to whether the compound is present or not. "R" values should not appear on data tables because they cannot be relied upon, even as a last resort. The second fact to keep in mind is that no compound concentration, even if it has passed all QC tests, is guaranteed to be accurate. Strict QC serves to increase confidence in data, but any value potentially contains error. DATA REVIEW REPORT arcadis.com 6 Volatile Organic Compound (VOC) Analyses 1. Holding Times The specified holding times for the following methods are presented in the following table. Method Matrix Holding Time Preservation SW-846 6200B Water 14 days from collection to analysis of less than 2. All samples were analyzed within the specified holding time. 2. Blank Contamination Quality assurance (QA) blanks (i.e., method and rinse blanks) are prepared to identify any contamination which may have been introduced into the samples during sample preparation or field activity. Method blanks measure laboratory contamination. Rinse blanks measure contamination of samples during field operations. A blank action level (BAL) of five times the concentration of a detected compound in an associated blank (common laboratory contaminant compounds are calculated at ten times) is calculated for QA blanks containing concentrations greater than the method detection limit (MDL). The BAL is compared to the associated sample results to determine the appropriate qualification of the sample results, if needed. All compounds associated with the equipment blanks exhibited a concentration less than the MDL, with the exception of the compounds listed in the following table. Sample results less than the BAL associated with the following sample locations were qualified as listed in the following table. Sample ID Compound Sample Result Qualification MW-5-20230711 Chloroform (EB-01) Detected sample results <RL and <BAL “UB” at the RL MW-4D-20230713 Chloroform (EB-03) Detected sample results <RL and <BAL “UB” at the RL RL - Reporting limit EB - Equipment blank 3. Surrogates/System Monitoring Compounds All samples to be analyzed for organic compounds are spiked with surrogate compounds prior to sample preparation to evaluate overall laboratory performance and efficiency of the analytical technique. VOC analysis requires that all surrogates associated with the analysis exhibit recoveries within the laboratory- established acceptance limits. All surrogate recoveries were within control limits. 4. Matrix Spike/Matrix Spike Duplicate (MS/MSD) Analysis MS/MSD data are used to assess the precision and accuracy of the analytical method. The compounds used to perform the MS/MSD analysis must exhibit a percent recovery within the laboratory-established DATA REVIEW REPORT arcadis.com 7 acceptance limits. The relative percent difference (RPD) between the MS/MSD recoveries must exhibit an RPD within the laboratory-established acceptance limits. Note: The MS/MSD recovery control limits do not apply for MS/MSD performed on sample locations where the compound concentration detected in the parent sample exceeds the MS/MSD concentration by a factor of four or greater. MS/MSD analysis was performed on sample MW-6-20230712, exhibited acceptable recoveries. Sample locations associated with MS/MSD recoveries exhibiting an RPD greater than the control limit are presented in the following table. Sample ID Compound MW-6-20230712 Acetone The criteria used to evaluate the RPD between the MS/MSD recoveries are presented in the following table. In the case of an RPD deviation, the sample results are qualified as documented in the table below. Control Limit Sample Result Qualification > UL Non-detect UJ Detect J 5. Laboratory Control Sample/Laboratory Control Sample Duplicate (LCS/LCSD) Analysis The LCS/LCSD analysis is used to assess the accuracy and precision of the analytical method independent of matrix interferences. The compounds associated with the LCS/LCSD analysis must exhibit a percent recovery and RPD within the laboratory-established acceptance limits. All compounds associated with the LCS/LCSD analysis exhibited recoveries and RPDs within the control limits. 6. Field Duplicate Analysis Field duplicate analysis is used to assess the overall precision of the field sampling procedures and analytical method. A control limit of 30% for water matrices is applied to the RPD between the parent sample and the field duplicate. In the instance when the parent and/or duplicate sample concentrations are less than or equal to 5 times the RL, a control limit of two times the RL is applied for soil matrices. Results for duplicate samples are summarized in the following table. Sample ID/Duplicate ID Compounds Sample Result (ug/l)Duplicate Result (ug/l) RPD MW-3-20230711 / DUP-01-20230711 All target compounds U U AC AC – Acceptable U – Not detected The results between the parent sample and field duplicate were acceptable. DATA REVIEW REPORT arcadis.com 8 7. System Performance and Overall Assessment Overall system performance was acceptable. Other than for those deviations specifically mentioned in this review, the overall data quality is within the guidelines specified in the method. DATA REVIEW REPORT arcadis.com 9 Data Validation Checklist For VOCs VOCs: 6200B-1997/6200B-2011 Reported Acceptable Not Required GAS CHROMATOGRAPHY/MASS SPECTROMETRY (GC/MS) Tier II Validation Holding times X X Reporting limits (units) X X Blanks A. Method blanks X X B. Equipment blanks/Field blank X X C. Trip blanks X X Laboratory Control Sample (LCS) %R X X Laboratory Control Sample Duplicate (LCSD) %R X X LCS/LCSD Precision (RPD) X X Matrix Spike (MS) %R X X Matrix Spike Duplicate (MSD) %R X X MS/MSD Precision (RPD) X X Field Duplicate (RPD) X X Surrogate Spike Recoveries X X Dilution Factor X X %R - Percent recovery RPD - Relative percent difference DATA REVIEW REPORT arcadis.com 10 Dissolved Gases Analyses 1. Holding Times The specified holding times for the following methods are presented in the following table. Method Matrix Holding Time Preservation Dissolved gases by SW-846 RSK175 Water 14 days from collection to analysis less than 2. All samples were analyzed within the specified holding time. 2. Blank Contamination Quality assurance (QA) blanks (i.e., method and rinse blanks) are prepared to identify any contamination which may have been introduced into the samples during sample preparation or field activity. Method blanks measure laboratory contamination. Rinse blanks measure contamination of samples during field operations. A blank action level (BAL) of five times the concentration of a detected compound in an associated blank (common laboratory contaminant compounds are calculated at ten times) is calculated for QA blanks containing concentrations greater than the method detection limit (MDL). The BAL is compared to the associated sample results to determine the appropriate qualification of the sample results, if needed. Compounds were not detected above the MDL in the associated blanks; therefore, detected sample results were not associated with blank contamination. 3. Matrix Spike/Matrix Spike Duplicate (MS/MSD) Analysis MS/MSD data are used to assess the precision and accuracy of the analytical method. The compounds used to perform the MS/MSD analysis must exhibit a percent recovery within the laboratory-established acceptance limits. The relative percent difference (RPD) between the MS/MSD recoveries must exhibit an RPD within the laboratory-established acceptance limits. Note: The MS/MSD recovery control limits do not apply for MS/MSD performed on samples where the compound concentration detected in the parent sample exceeds the MS/MSD concentration by a factor of four or greater. MS/MSD analysis was performed on sample MW-6-20230712, exhibited acceptable recoveries and RPDs. 4. Laboratory Control Sample / Laboratory Control Sample Duplicate (LCS/LCSD) Analysis The LCS/LCSD analysis is used to assess the precision and accuracy of the analytical method independent of matrix interferences. The compounds associated with the LCS/LCSD analysis must exhibit a percent recovery and RPD within the laboratory-established acceptance limits. All compounds associated with the LCS/LCSD analysis exhibited recoveries and RPDs within the control limits. DATA REVIEW REPORT arcadis.com 11 5. Laboratory Duplicate Analysis The laboratory duplicate relative percent difference (RPD) criterion is applied when parent and duplicate sample concentrations are greater than or equal to 5 times the RL. A control limit of 20% for water matrices is applied when the criteria above is true. In the instance when the parent and/or duplicate sample concentrations are less than or equal to 5 times the RL, a control limit of one time the RL is applied for water matrices. The laboratory duplicate analysis was performed on samples MW-9-20230713 and MW-4D-20230713, exhibited acceptable RPDs. 6. Field Duplicate Analysis Field duplicate analysis is used to assess the overall precision of the field sampling procedures and analytical method. A control limit of 30% for water matrices is applied to the RPD between the parent sample and the field duplicate. In the instance when the parent and/or duplicate sample concentrations are less than or equal to 5 times the RL, a control limit of two times the RL is applied for soil matrices. Results for duplicate samples are summarized in the following table. Sample ID/Duplicate ID Compound Sample Result (ug/l)Duplicate Result (ug/l)RPD MW-3-20230711 / DUP-01-20230711 Methane U U AC Notes: AC – Acceptable U – Not detected The results between the parent sample and field duplicate were acceptable. 7. System Performance and Overall Assessment Overall system performance was acceptable. Other than for those deviations specifically mentioned in this review, the overall data quality is within the guidelines specified in the method. DATA REVIEW REPORT arcadis.com 12 Data Validation Checklist For Dissolved Gases Dissolved Gases: SW-846 RSK175 Reported Acceptable Not Required GAS CHROMATOGRAPHY/MASS SPECTROMETRY (GC/MS) Tier II Validation Holding times X X Reporting limits (units) X X Blanks D. Method blanks X X E. Equipment blanks / Field blanks X X F. Trip blanks X X Laboratory Control Sample (LCS) %R X X Laboratory Control Sample Duplicate (LCSD) %R X X LCS/LCSD Precision (RPD) X X Matrix Spike (MS) %R X X Matrix Spike Duplicate (MSD) %R X X MS/MSD Precision (RPD) X X Field Duplicate (RPD)/Laboratory Duplicate (RPD) X X Dilution Factor X X Moisture Content X X %R - Percent recovery RPD - Relative percent difference DATA REVIEW REPORT arcadis.com 13 Ethylene dibromide (EDB) 1. Holding Times The specified holding times for the following methods are presented in the following table. Method Matrix Holding Time Preservation SW-846 8011 Water from extraction to analysis Cool to <6°C All samples were analyzed within the specified holding time with exceptions noted below, Sample ID Holding Time Criteria MW-3-20230711 DUP-01-20230711 EB-01-20230711 MW-5-20230711 9 days from collection to extraction 7 days from collection to extraction and 40 days from extraction to analysis EB-02-20230712 MW-7-20230712 MW-2-20230712 8 days from collection to extraction Sample results associated with sample locations analyzed by analytical method SW-846 8011 were qualified, as specified in the table below. All other holding times were met. Criteria Qualification Detected Analytes Non-detect Analytes Analysis completed less than two times holding time J UJ Analysis completed greater than two times holding time J R 2. Blank Contamination Quality assurance (QA) blanks (i.e., method and rinse blanks) are prepared to identify any contamination which may have been introduced into the samples during sample preparation or field activity. Method blanks measure laboratory contamination. Rinse blanks measure contamination of samples during field operations. A blank action level (BAL) of five times the concentration of a detected compound in an associated blank (common laboratory contaminant compounds are calculated at ten times) is calculated for QA blanks containing concentrations greater than the method detection limit (MDL). The BAL is compared to the associated sample results to determine the appropriate qualification of the sample results, if needed. Compounds were not detected above the MDL in the associated blanks; therefore, detected sample results were not associated with blank contamination. 3. Matrix Spike/Matrix Spike Duplicate (MS/MSD) Analysis MS/MSD data are used to assess the precision and accuracy of the analytical method. The compounds used to perform the MS/MSD analysis must exhibit a percent recovery within the laboratory-established DATA REVIEW REPORT arcadis.com 14 acceptance limits. The relative percent difference (RPD) between the MS/MSD recoveries must exhibit an RPD within the laboratory-established acceptance limits. Note: The MS/MSD recovery control limits do not apply for MS/MSD performed on sample locations where the compound concentration detected in the parent sample exceeds the MS/MSD concentration by a factor of four or greater. MS analysis was performed on sample MW-6-20230712, exhibited acceptable recovery. 4. Laboratory Control Sample/Laboratory Control Sample Duplicate (LCS/LCSD) Analysis The LCS/LCSD analysis is used to assess accuracy and precision of the analytical method independent of matrix interferences. The compounds associated with the LCS/LCSD analysis must exhibit recoveries and RPD within the laboratory-established acceptance limits. All compounds associated with the LCS/LCSD analysis exhibited recovery and RPD within the control limits. 5. Laboratory Duplicate Analysis The laboratory duplicate relative percent difference (RPD) criterion is applied when parent and duplicate sample concentrations are greater than or equal to 5 times the RL. A control limit of 20% for water matrices is applied when the criteria above is true. In the instance when the parent and/or duplicate sample concentrations are less than or equal to 5 times the RL, a control limit of one time the RL is applied for water matrices. A laboratory duplicate analysis was not performed on any of the samples from this SDG. 6. Field Duplicate Analysis Field duplicate analysis is used to assess the overall precision of the field sampling procedures and analytical method. A control limit of 30% for water matrices is applied to the RPD between the parent sample and the field duplicate. In the instance when the parent and/or duplicate sample concentrations are less than or equal to 5 times the RL, a control limit of two times the RL is applied for water matrices. Results for duplicate samples are summarized in the following table. Sample ID/Duplicate ID Compound Sample Result (ug/l)Duplicate Result (ug/l)RPD MW-3-20230711 / DUP-01-20230711 Ethylene Dibromide U U AC AC – Acceptable U – Not acceptable The results between the parent sample and field duplicate were acceptable. 7. System Performance and Overall Assessment Overall system performance was acceptable. Other than for those deviations specifically mentioned in this review, the overall data quality is within the guidelines specified in the method. DATA REVIEW REPORT arcadis.com 15 Data Validation Checklist For Ethylene dibromide SVOCs: SW-846 8011 Reported Acceptable Not Required No Yes No Yes GAS CHROMATOGRAPHY/MASS SPECTROMETRY (GC/MS) Tier II Validation Holding times X X Reporting limits (units) X X Blanks A. Method blanks X X B. Equipment blanks X X C. Trip blanks X X Laboratory Control Sample (LCS) %R X X Laboratory Control Sample Duplicate (LCSD) %R X X LCS/LCSD Precision (RPD) X X Matrix Spike (MS) %R X X Matrix Spike Duplicate (MSD) %R X X MS/MSD Precision (RPD) X X Field and Lab Duplicate (RPD) X X Dilution Factor X X %R - Percent recovery RPD - Relative percent difference DATA REVIEW REPORT arcadis.com 16 Inorganic Analysis Introduction Analyses were performed according to United States Environmental Protection Agency (USEPA) SW-846 Methods 6010D, 3500Fe B-2011, 9056A and 9060A. Data were reviewed in accordance with the USEPA National Functional Guidelines NFG for Inorganic Superfund Methods Data Review, EPA-540-R-20-006 (November 2020), with reference to the historical (USEPA Contract Laboratory Program National Functional Guidelines for Inorganic Data Review, OSWER 9240.1-05A-P, October 2004, as appropriate). The data review process is an evaluation of data on a technical basis rather than a determination of contract compliance. As such, the standards against which the data are being weighed may differ from those specified in the analytical method. It is assumed that the data package represents the best efforts of the laboratory and that it was already subjected to adequate and sufficient quality review prior to submission. During the review process, laboratory qualified and unqualified data are verified against the supporting documentation. Based on this evaluation, qualifier codes may be added, deleted, or modified by the data reviewer. Results are qualified with the following codes in accordance with the USEPA National Functional Guidelines: • Concentration (C) Qualifiers U The analyte was analyzed for but not detected. The associated value is the analyte instrument detection limit. J The reported value was obtained from a reading less than the reporting limit (RL), but greater than or equal to the method detection limit (MDL). • Quantitation (Q) Qualifiers E The reported value is estimated due to the presence of interference. N Spiked sample recovery is not within control limits. * Duplicate analysis is not within control limits. • Validation Qualifiers J The analyte was positively identified; however, the associated numerical value is an estimated concentration only. UJ The analyte was not detected above the reported sample detection limit. However, the reported limit is approximate and may or may not represent the actual limit of detection. UB Analyte considered non-detect at the listed value due to associated blank contamination. R The sample results are rejected. Two facts should be noted by all data users. First, the “R” flag means that the associated value is unusable. In other words, due to significant quality control (QC) problems, the analysis is invalid and provides no information as to whether the compound is present or not. “R” values should not appear on data tables because they cannot be relied upon, even as a last resort. The second fact to keep in mind is that no compound concentration, even if it has passed all QC tests, is guaranteed to be accurate. Strict QC serves to increase confidence in data but any value potentially contains error. DATA REVIEW REPORT arcadis.com 17 Metals Analyses 1. Holding Times The specified holding times for the following methods are presented in the following table. Method Matrix Holding Time Preservation SW-846 6010D Water 180 days from collection to analysis Cool to <6 °C All samples were analyzed within the specified holding times. 2. Blank Contamination Quality assurance (QA) blanks (i.e., method and rinse blanks) are prepared to identify any contamination which may have been introduced into the samples during sample preparation or field activity. Method blanks measure laboratory contamination. Rinse blanks measure contamination of samples during field operations. A blank action level (BAL) of five times the concentration of a detected analyte in an associated blank is calculated for QA blanks containing concentrations greater than the method detection limit (MDL). The BAL is compared to the associated sample results to determine the appropriate qualification of the sample results, if needed. Analytes were not detected above the MDL in the associated blanks; therefore, detected sample results were not associated with blank contamination. 3. Matrix Spike/Matrix Spike Duplicate (MS/MSD) / Laboratory Duplicate Sample Analysis MS/MSD and laboratory duplicate sample data are used to assess the precision and accuracy of the analytical method. 3.1 Matrix Spike/Matrix Spike Duplicate (MS/MSD) All metal analytes must exhibit a percent recovery within the established acceptance limits of 75% to 125%. The MS/MSD recovery control limits do not apply for MS performed on sample locations where the analyte’s concentration detected in the parent sample exceeds the MS concentration by a factor of four or greater. In instance where this is true, the data will not be qualified even if the percent recovery does not meet the control limits and the laboratory flag will be removed. Note: The MS/MSD recovery control limits do not apply for MS/MSD performed on sample locations where the compound concentration detected in the parent sample exceeds the MS/MSD concentration by a factor of four or greater. MS/MSD analysis was performed on sample MW-6-20230712, exhibited acceptable recoveries and RPDs. DATA REVIEW REPORT arcadis.com 18 3.2 Laboratory Duplicate Analysis The laboratory duplicates relative percent difference (RPD) criterion is applied when parent and duplicate sample concentrations are greater than or equal to 5 times the RL. A control limit of 20% for water matrices and 35% for soil matrices is applied when the criteria above is true. In the instance when the parent and/or duplicate sample concentrations are less than or equal to 5 times the RL, a control limit of one times the RL is applied for water matrices and two times the RL for soil matrices. Laboratory duplicate analysis was not performed on any of the samples from this SDG. 4. Field Duplicate Analysis Field duplicate analysis is used to assess the overall precision of the field sampling procedures and analytical method. A control limit of 30% for water matrices is applied to the RPD between the parent sample and the field duplicate. In the instance when the parent and/or duplicate sample concentrations are less than or equal to 5 times the RL, a control limit of two times the RL is applied for soil matrices. Results for duplicate samples are summarized in the following table. Sample ID/Duplicate ID Analytes Sample Result (ug/l) Duplicate Result (ug/l) RPD MW-3-20230711 / DUP-01-20230711 Iron 1220 758 46.7% The analyte iron associated with sample locations MW-3-20230711 and DUP-01-20230711 exhibited a field duplicate RPD greater than the control limit. The associated sample results from sample locations for the listed analyte were qualified as estimated. 5. Laboratory Control Sample (LCS) Analysis The LCS analysis is used to assess the accuracy of the analytical method independent of matrix interferences. The analytes associated with the LCS analysis must exhibit a percent recovery between the control limits of 80% and 120%. All analytes associated with the LCS analysis exhibited recoveries within the control limits. 6. System Performance and Overall Assessment Overall system performance was acceptable. Other than for those deviations specifically mentioned in this review, the overall data quality is within the guidelines specified in the method. DATA REVIEW REPORT arcadis.com 19 Data Validation Checklist For Metals Metals: SW-846 6010D Reported Not Required No Yes No Yes INDUCTIVELY COUPLED PLASMA-MASS SPECTROMETRY (ICP-MS) Tier II Validation Holding Times X X Reporting limits (units) X X Blanks A. Method Blanks X X B. Equipment/Trip Blanks X X C. Instrument Blanks X X D. Field Blanks X X Laboratory Control Sample (LCS) X X Laboratory Control Sample Duplicate (LCSD) X X LCS/LCSD Precision (RPD) X X Matrix Spike (MS) %R X X Matrix Spike Duplicate (MSD) %R X X MS/MSD Precision (RPD) X X Field Duplicate (RPD) X X ICP Serial Dilution X X Reporting Limit Verification X X Notes: %R - Percent recovery RPD - Relative percent difference DATA REVIEW REPORT arcadis.com 20 General Chemistry Analysis 1. Holding Times The specified holding times for the following methods are presented in the following table. Method Matrix Holding Time Preservation Ferrous Iron by 3500Fe B-2011 Water 24 hours from collection to analysis Cool to <6 °C Nitrate and Sulfate by 9056A Water 28 days from collection to analysis Cool to <6 °C Nitrate by 9056A Water 48 hours from collection to analysis Cool to <6 °C Total Organic Carbon (TOC) by 9060A Water 28 days from collection to analysis Cool to <6 °C, All samples were analyzed within the specified holding time with exceptions noted below, Sample ID Analyte Criteria MW-3-20230711 DUP-01-20230711 MW-5-20230711 Ferrous Iron Analysis completed greater than two times holding time 24 hours from collection to analysis MW-7-20230712 MW-2-20230712 24 hours from collection to analysis MW-8-20230713 MW-9-20230713 MW-4D-20230713 24 hours from collection to analysis DUP-01-20230711 MW-5-20230711 MW-6-20230712 MW-7-20230712 MW-2-20230712 MW-1-20230713 MW-8-20230713 Nitrate 48 hours from collection to analysis Sample results associated with sample locations analyzed by analytical method 3500Fe B-2011 and 9056A were qualified, as specified in the table below. All other holding times were met. Criteria Qualification Detected Analytes Non-detect Analytes Analysis completed less than two times holding time J UJ Analysis completed greater than two times holding time J R 2. Blank Contamination Quality assurance (QA) blanks (i.e., method and rinse blanks) are prepared to identify any contamination which may have been introduced into the samples during sample preparation or field activity. Method blanks measure laboratory contamination. Rinse blanks measure contamination of samples during field operations. DATA REVIEW REPORT arcadis.com 21 A blank action level (BAL) of five times the concentration of a detected compound in an associated blank is calculated for QA blanks containing concentrations greater than the method detection limit (MDL). The BAL is compared to the associated sample results to determine the appropriate qualification of the sample results, if needed. All analytes associated with the method blanks exhibited a concentration less than the MDL, with the exception of the compounds listed in the following table. Sample results associated with method blank contamination that were greater than the BAL resulted in the removal of the laboratory qualifier (B) of data. Sample results less than the BAL associated with the following sample locations were qualified as listed in the following table. Sample ID Analyte Sample Result Qualification MW-6-20230712 Total Organic Carbon (MB) Detected sample results <RL and <BAL “UB” at the RL RL - Reporting limit MB - Method blank 3. Matrix Spike/Matrix Spike Duplicate (MS/MSD)/Laboratory Duplicate Analysis MS/MSD and laboratory duplicate data are used to assess the precision and accuracy of the analytical method. 3.1 MS/MSD Analysis All analytes must exhibit a percent recovery within the established acceptance limits of 75% to 125%. The MS/MSD data are used to assess the precision and accuracy of the analytical method. The compounds used to perform the MS/MSD analysis must exhibit a percent recovery within the laboratory-established acceptance limits. The relative percent difference (RPD) between the MS/MSD recoveries must exhibit an RPD within the laboratory-established acceptance limits. Note: The MS/MSD recovery control limits do not apply for MS/MSD performed on sample locations where the compound concentration detected in the parent sample exceeds the MS/MSD concentration by a factor of four or greater. MS analysis was performed on sample MW-4D-20230713 for nitrate and sulfate, exhibited acceptable recoveries. MS/MSD analysis was performed on samples MW-6-20230712 and MW-4D-20230713 for ferrous iron, and on sample MW-6-20230712 for nitrate and sulfate and on sample MW-6-20230712 for total organic carbon, exhibited acceptable recoveries and RPDs. 3.2 Laboratory Duplicate Analysis The laboratory duplicate relative percent difference (RPD) criterion is applied when parent and duplicate sample concentrations are greater than or equal to 5 times the RL. A control limit of 20% for water matrices is applied when the criteria above is true. In the instance when the parent and/or duplicate sample concentrations are less than or equal to 5 times the RL, a control limit of one time the RL is applied for water matrices. DATA REVIEW REPORT arcadis.com 22 The laboratory duplicate analysis was performed on sample MW-1-20230713 for ferrous iron and on samples MW-4D-20230713 and MW-6-20230712 for nitrate and sulfate, exhibited acceptable RPDs. 4. Field Duplicate Analysis Field duplicate analysis is used to assess the overall precision of the field sampling procedures and analytical method. A control limit of 30% for water matrices is applied to the RPD between the parent sample and the field duplicate. In the instance when the parent and/or duplicate sample concentrations are less than or equal to 5 times the RL, a control limit of two times the RL is applied for soil matrices. Results for duplicate samples are summarized in the following table. Sample ID/Duplicate ID Analytes Sample Result (ug/l) Duplicate Result (ug/l)RPD MW-3-20230711 / DUP-01-20230711 Ferrous Iron 43.0 49.0 AC Nitrate 5200 5340 2.7% Sulfate 169000 167000 1.2% TOC 1580 2120 AC AC – Acceptable The results and the calculated RPDs between the parent sample and field duplicate were acceptable. 5. Laboratory Control Sample (LCS) Analysis The LCS analysis is used to assess the accuracy of the analytical method independent of matrix interferences. The analytes associated with the LCS analysis must exhibit a percent recovery between the control limits of 80% and 120%. All analytes associated with the LCS analysis exhibited recoveries within the control limits. 6. System Performance and Overall Assessment Overall system performance was acceptable. Other than for those deviations specifically mentioned in this review, the overall data quality is within the guidelines specified in the method. DATA REVIEW REPORT arcadis.com 23 Data Validation Checklist For General Chemistry General Chemistry: 3500Fe B-2011, 9056A and 9060A Reported Not Required No Yes No Yes MISCELLANEOUS INSTRUMENTATION Tier II Validation Holding Times X X Reporting limits (units) X X Blanks A. Method Blanks X X B. Equipment blank/Trip blank X X C. Field blank X X Laboratory Control Sample (LCS) X X Laboratory Control Sample Duplicate (LCSD) X X LCS/LCSD Precision (RPD) X X Matrix Spike (MS) %R X X Matrix Spike Duplicate (MSD) %R X X MS/MSD Precision (RPD) X X Laboratory duplicate (RPD) X X Field Duplicate (RPD) X X Notes: %R - Percent recovery RPD - Relative percent difference DATA REVIEW REPORT arcadis.com 24 VALIDATION PERFORMED BY: Bhagyashree A Fulzele SIGNATURE: DATE: August 17, 2023 PEER REVIEW: Dennis Capria DATE: August 24, 2023 Chain of Custody Corrected Sample Analysis Data Sheets GLOSSARY OF TERMS Guide to Reading and Understanding Your Laboratory Report The information below is designed to better explain the various terms used in your report of analytical results from the Laboratory. This is not intended as a comprehensive explanation, and if you have additional questions please contact your project representative. Results Disclaimer - Information that may be provided by the customer, and contained within this report, include Permit Limits, Project Name, Sample ID, Sample Matrix, Sample Preservation, Field Blanks, Field Spikes, Field Duplicates, On-Site Data, Sampling Collection Dates/Times, and Sampling Location. Results relate to the accuracy of this information provided, and as the samples are received. Abbreviations and Definitions MDL Method Detection Limit. RDL Reported Detection Limit. Rec.Recovery. RPD Relative Percent Difference. SDG Sample Delivery Group. (S)Surrogate (Surrogate Standard) - Analytes added to every blank, sample, Laboratory Control Sample/Duplicate and Matrix Spike/Duplicate; used to evaluate analytical efficiency by measuring recovery. Surrogates are not expected to be detected in all environmental media. U Not detected at the Reporting Limit (or MDL where applicable). Analyte The name of the particular compound or analysis performed. Some Analyses and Methods will have multiple analytes reported. Dilution If the sample matrix contains an interfering material, the sample preparation volume or weight values differ from the standard, or if concentrations of analytes in the sample are higher than the highest limit of concentration that the laboratory can accurately report, the sample may be diluted for analysis. If a value different than 1 is used in this field, the result reported has already been corrected for this factor. Limits These are the target % recovery ranges or % difference value that the laboratory has historically determined as normal for the method and analyte being reported. Successful QC Sample analysis will target all analytes recovered or duplicated within these ranges. Original Sample The non-spiked sample in the prep batch used to determine the Relative Percent Difference (RPD) from a quality control sample. The Original Sample may not be included within the reported SDG. Qualifier This column provides a letter and/or number designation that corresponds to additional information concerning the result reported. If a Qualifier is present, a definition per Qualifier is provided within the Glossary and Definitions page and potentially a discussion of possible implications of the Qualifier in the Case Narrative if applicable. Result The actual analytical final result (corrected for any sample specific characteristics) reported for your sample. If there was no measurable result returned for a specific analyte, the result in this column may state “ND” (Not Detected) or “BDL” (Below Detectable Levels). The information in the results column should always be accompanied by either an MDL (Method Detection Limit) or RDL (Reporting Detection Limit) that defines the lowest value that the laboratory could detect or report for this analyte. Uncertainty (Radiochemistry)Confidence level of 2 sigma. Case Narrative (Cn) A brief discussion about the included sample results, including a discussion of any non-conformances to protocol observed either at sample receipt by the laboratory from the field or during the analytical process. If present, there will be a section in the Case Narrative to discuss the meaning of any data qualifiers used in the report. Quality Control Summary (Qc) This section of the report includes the results of the laboratory quality control analyses required by procedure or analytical methods to assist in evaluating the validity of the results reported for your samples. These analyses are not being performed on your samples typically, but on laboratory generated material. Sample Chain of Custody (Sc) This is the document created in the field when your samples were initially collected. This is used to verify the time and date of collection, the person collecting the samples, and the analyses that the laboratory is requested to perform. This chain of custody also documents all persons (excluding commercial shippers) that have had control or possession of the samples from the time of collection until delivery to the laboratory for analysis. Sample Results (Sr) This section of your report will provide the results of all testing performed on your samples. These results are provided by sample ID and are separated by the analyses performed on each sample. The header line of each analysis section for each sample will provide the name and method number for the analysis reported. Sample Summary (Ss)This section of the Analytical Report defines the specific analyses performed for each sample ID, including the dates and times of preparation and/or analysis. Qualifier Description B The same analyte is found in the associated blank. E The analyte concentration exceeds the upper limit of the calibration range of the instrument established by the initial calibration (ICAL). J The identification of the analyte is acceptable; the reported value is an estimate. J3 The associated batch QC was outside the established quality control range for precision. P1 RPD value not applicable for sample concentrations less than 5 times the reporting limit. T8 Sample(s) received past/too close to holding time expiration. 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:12 56 of 60 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:23 56 of 60 SAMPLE RESULTS - 01 L1635814 MW-3-20230711 Collected date/time: 07/11/23 13:12 Wet Chemistry by Method 3500Fe B-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Ferrous Iron 43.0 J T8 15.0 50.0 1 07/16/2023 16:07 WG2095725 Wet Chemistry by Method 9056A Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Nitrate 5200 T8 48.0 100 1 07/18/2023 22:23 WG2097097 Sulfate 169000 594 5000 1 07/18/2023 22:23 WG2097097 Wet Chemistry by Method 9060A Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time TOC (Total Organic Carbon)1580 102 1000 1 07/27/2023 16:44 WG2100976 Metals (ICP) by Method 6010D Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Iron 1220 18.0 100 1 07/23/2023 13:30 WG2096554 Volatile Organic Compounds (GC) by Method RSK175 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Methane U 2.91 10.0 1 07/18/2023 13:13 WG2096697 Volatile Organic Compounds (GC/MS) by Method 6200B-1997/6200B-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Acetone U 11.3 50.0 1 07/16/2023 18:40 WG2095840 Acrolein U 2.54 50.0 1 07/16/2023 18:40 WG2095840 Acrylonitrile U 0.671 10.0 1 07/16/2023 18:40 WG2095840 Benzene U 0.0941 1.00 1 07/16/2023 18:40 WG2095840 Bromobenzene U 0.118 1.00 1 07/16/2023 18:40 WG2095840 Bromodichloromethane U 0.136 1.00 1 07/16/2023 18:40 WG2095840 Bromoform U 0.129 1.00 1 07/16/2023 18:40 WG2095840 Bromomethane U 0.605 5.00 1 07/16/2023 18:40 WG2095840 n-Butylbenzene U 0.157 1.00 1 07/16/2023 18:40 WG2095840 sec-Butylbenzene U 0.125 1.00 1 07/16/2023 18:40 WG2095840 tert-Butylbenzene U 0.127 1.00 1 07/16/2023 18:40 WG2095840 Carbon tetrachloride U 0.128 1.00 1 07/16/2023 18:40 WG2095840 Chlorobenzene U 0.116 1.00 1 07/16/2023 18:40 WG2095840 Chlorodibromomethane U 0.140 1.00 1 07/16/2023 18:40 WG2095840 Chloroethane U 0.192 5.00 1 07/16/2023 18:40 WG2095840 Chloroform U 0.111 5.00 1 07/16/2023 18:40 WG2095840 Chloromethane U 0.960 2.50 1 07/16/2023 18:40 WG2095840 2-Chlorotoluene U 0.106 1.00 1 07/16/2023 18:40 WG2095840 4-Chlorotoluene U 0.114 1.00 1 07/16/2023 18:40 WG2095840 1,2-Dibromo-3-Chloropropane U 0.276 5.00 1 07/16/2023 18:40 WG2095840 1,2-Dibromoethane U 0.126 1.00 1 07/16/2023 18:40 WG2095840 Dibromomethane U 0.122 1.00 1 07/16/2023 18:40 WG2095840 1,2-Dichlorobenzene U 0.107 1.00 1 07/16/2023 18:40 WG2095840 1,3-Dichlorobenzene U 0.110 1.00 1 07/16/2023 18:40 WG2095840 1,4-Dichlorobenzene U 0.120 1.00 1 07/16/2023 18:40 WG2095840 Dichlorodifluoromethane U 0.374 5.00 1 07/16/2023 18:40 WG2095840 1,1-Dichloroethane U 0.100 1.00 1 07/16/2023 18:40 WG2095840 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:12 7 of 60 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:23 7 of 60 SAMPLE RESULTS - 01 L1635814 MW-3-20230711 Collected date/time: 07/11/23 13:12 Volatile Organic Compounds (GC/MS) by Method 6200B-1997/6200B-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time 1,2-Dichloroethane U 0.0819 1.00 1 07/16/2023 18:40 WG2095840 1,1-Dichloroethene U 0.188 1.00 1 07/16/2023 18:40 WG2095840 cis-1,2-Dichloroethene U 0.126 1.00 1 07/16/2023 18:40 WG2095840 trans-1,2-Dichloroethene U 0.149 1.00 1 07/16/2023 18:40 WG2095840 1,2-Dichloropropane U 0.149 1.00 1 07/16/2023 18:40 WG2095840 1,1-Dichloropropene U 0.142 1.00 1 07/16/2023 18:40 WG2095840 1,3-Dichloropropane U 0.110 1.00 1 07/16/2023 18:40 WG2095840 2,2-Dichloropropane U 0.161 1.00 1 07/16/2023 18:40 WG2095840 Di-isopropyl ether U 0.105 1.00 1 07/16/2023 18:40 WG2095840 Ethylbenzene U 0.137 1.00 1 07/16/2023 18:40 WG2095840 Hexachloro-1,3-butadiene U 0.337 1.00 1 07/16/2023 18:40 WG2095840 Isopropylbenzene U 0.105 1.00 1 07/16/2023 18:40 WG2095840 p-Isopropyltoluene U 0.120 1.00 1 07/16/2023 18:40 WG2095840 2-Butanone (MEK)U 1.19 10.0 1 07/16/2023 18:40 WG2095840 Methylene Chloride U 0.430 5.00 1 07/16/2023 18:40 WG2095840 4-Methyl-2-pentanone (MIBK)U 0.478 10.0 1 07/16/2023 18:40 WG2095840 Methyl tert-butyl ether U 0.101 1.00 1 07/16/2023 18:40 WG2095840 Naphthalene U 1.00 5.00 1 07/16/2023 18:40 WG2095840 n-Propylbenzene U 0.0993 1.00 1 07/16/2023 18:40 WG2095840 Styrene U 0.118 1.00 1 07/16/2023 18:40 WG2095840 1,1,1,2-Tetrachloroethane U 0.147 1.00 1 07/16/2023 18:40 WG2095840 1,1,2,2-Tetrachloroethane U 0.133 1.00 1 07/16/2023 18:40 WG2095840 Tetrachloroethene U 0.300 1.00 1 07/16/2023 18:40 WG2095840 Toluene U 0.278 1.00 1 07/16/2023 18:40 WG2095840 1,2,3-Trichlorobenzene U 0.230 1.00 1 07/16/2023 18:40 WG2095840 1,2,4-Trichlorobenzene U 0.481 1.00 1 07/16/2023 18:40 WG2095840 1,1,1-Trichloroethane U 0.149 1.00 1 07/16/2023 18:40 WG2095840 1,1,2-Trichloroethane U 0.158 1.00 1 07/16/2023 18:40 WG2095840 Trichloroethene U 0.190 1.00 1 07/16/2023 18:40 WG2095840 Trichlorofluoromethane U 0.160 5.00 1 07/16/2023 18:40 WG2095840 1,2,3-Trichloropropane U 0.237 2.50 1 07/16/2023 18:40 WG2095840 1,2,4-Trimethylbenzene U 0.322 1.00 1 07/16/2023 18:40 WG2095840 1,3,5-Trimethylbenzene U 0.104 1.00 1 07/16/2023 18:40 WG2095840 Vinyl chloride U 0.234 1.00 1 07/16/2023 18:40 WG2095840 o-Xylene U 0.174 1.00 1 07/16/2023 18:40 WG2095840 m&p-Xylenes U 0.430 2.00 1 07/16/2023 18:40 WG2095840 Xylenes, Total U 0.174 3.00 1 07/16/2023 18:40 WG2095840 ethanol U 42.0 100 1 07/20/2023 22:56 WG2096917 3,3-Dimethyl-1-butanol U 4.51 100 1 07/20/2023 22:56 WG2096917 Ethyl tert-butyl ether U 0.101 1.00 1 07/16/2023 18:40 WG2095840 t-Amyl Alcohol U 4.90 50.0 1 07/16/2023 18:40 WG2095840 tert-Butyl alcohol U 4.06 5.00 1 07/20/2023 22:56 WG2096917 tert-Butyl Formate U 4.51 20.0 1 07/16/2023 18:40 WG2095840 tert-Amyl Methyl Ether U 0.195 1.00 1 07/16/2023 18:40 WG2095840 (S) Toluene-d8 105 80.0-120 07/16/2023 18:40 WG2095840 (S) Toluene-d8 99.9 80.0-120 07/20/2023 22:56 WG2096917 (S) 4-Bromofluorobenzene 96.7 77.0-126 07/16/2023 18:40 WG2095840 (S) 4-Bromofluorobenzene 99.8 77.0-126 07/20/2023 22:56 WG2096917 (S) 1,2-Dichloroethane-d4 112 70.0-130 07/16/2023 18:40 WG2095840 (S) 1,2-Dichloroethane-d4 117 70.0-130 07/20/2023 22:56 WG2096917 EDB / DBCP by Method 8011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Ethylene Dibromide U 0.00547 0.0204 1.02 07/21/2023 16:25 WG2098245 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:12 8 of 60 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:23 8 of 60 SAMPLE RESULTS - 02 L1635814 DUP-01-20230711 Collected date/time: 07/11/23 00:00 Wet Chemistry by Method 3500Fe B-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Ferrous Iron 49.0 J T8 15.0 50.0 1 07/16/2023 16:08 WG2095725 Wet Chemistry by Method 9056A Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Nitrate 5340 T8 48.0 100 1 07/21/2023 08:47 WG2098891 Sulfate 167000 594 5000 1 07/21/2023 08:47 WG2098891 Wet Chemistry by Method 9060A Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time TOC (Total Organic Carbon)2120 102 1000 1 07/27/2023 16:58 WG2100976 Metals (ICP) by Method 6010D Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Iron 758 18.0 100 1 07/23/2023 13:33 WG2096554 Volatile Organic Compounds (GC) by Method RSK175 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Methane U 2.91 10.0 1 07/18/2023 13:15 WG2096697 Volatile Organic Compounds (GC/MS) by Method 6200B-1997/6200B-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Acetone U 11.3 50.0 1 07/16/2023 18:59 WG2095840 Acrolein U 2.54 50.0 1 07/16/2023 18:59 WG2095840 Acrylonitrile U 0.671 10.0 1 07/16/2023 18:59 WG2095840 Benzene U 0.0941 1.00 1 07/16/2023 18:59 WG2095840 Bromobenzene U 0.118 1.00 1 07/16/2023 18:59 WG2095840 Bromodichloromethane U 0.136 1.00 1 07/16/2023 18:59 WG2095840 Bromoform U 0.129 1.00 1 07/16/2023 18:59 WG2095840 Bromomethane U 0.605 5.00 1 07/16/2023 18:59 WG2095840 n-Butylbenzene U 0.157 1.00 1 07/16/2023 18:59 WG2095840 sec-Butylbenzene U 0.125 1.00 1 07/16/2023 18:59 WG2095840 tert-Butylbenzene U 0.127 1.00 1 07/16/2023 18:59 WG2095840 Carbon tetrachloride U 0.128 1.00 1 07/16/2023 18:59 WG2095840 Chlorobenzene U 0.116 1.00 1 07/16/2023 18:59 WG2095840 Chlorodibromomethane U 0.140 1.00 1 07/16/2023 18:59 WG2095840 Chloroethane U 0.192 5.00 1 07/16/2023 18:59 WG2095840 Chloroform U 0.111 5.00 1 07/16/2023 18:59 WG2095840 Chloromethane U 0.960 2.50 1 07/16/2023 18:59 WG2095840 2-Chlorotoluene U 0.106 1.00 1 07/16/2023 18:59 WG2095840 4-Chlorotoluene U 0.114 1.00 1 07/16/2023 18:59 WG2095840 1,2-Dibromo-3-Chloropropane U 0.276 5.00 1 07/16/2023 18:59 WG2095840 1,2-Dibromoethane U 0.126 1.00 1 07/16/2023 18:59 WG2095840 Dibromomethane U 0.122 1.00 1 07/16/2023 18:59 WG2095840 1,2-Dichlorobenzene U 0.107 1.00 1 07/16/2023 18:59 WG2095840 1,3-Dichlorobenzene U 0.110 1.00 1 07/16/2023 18:59 WG2095840 1,4-Dichlorobenzene U 0.120 1.00 1 07/16/2023 18:59 WG2095840 Dichlorodifluoromethane U 0.374 5.00 1 07/16/2023 18:59 WG2095840 1,1-Dichloroethane U 0.100 1.00 1 07/16/2023 18:59 WG2095840 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:12 9 of 60 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:23 9 of 60 SAMPLE RESULTS - 02 L1635814 DUP-01-20230711 Collected date/time: 07/11/23 00:00 Volatile Organic Compounds (GC/MS) by Method 6200B-1997/6200B-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time 1,2-Dichloroethane U 0.0819 1.00 1 07/16/2023 18:59 WG2095840 1,1-Dichloroethene U 0.188 1.00 1 07/16/2023 18:59 WG2095840 cis-1,2-Dichloroethene U 0.126 1.00 1 07/16/2023 18:59 WG2095840 trans-1,2-Dichloroethene U 0.149 1.00 1 07/16/2023 18:59 WG2095840 1,2-Dichloropropane U 0.149 1.00 1 07/16/2023 18:59 WG2095840 1,1-Dichloropropene U 0.142 1.00 1 07/16/2023 18:59 WG2095840 1,3-Dichloropropane U 0.110 1.00 1 07/16/2023 18:59 WG2095840 2,2-Dichloropropane U 0.161 1.00 1 07/16/2023 18:59 WG2095840 Di-isopropyl ether U 0.105 1.00 1 07/16/2023 18:59 WG2095840 Ethylbenzene U 0.137 1.00 1 07/16/2023 18:59 WG2095840 Hexachloro-1,3-butadiene U 0.337 1.00 1 07/16/2023 18:59 WG2095840 Isopropylbenzene U 0.105 1.00 1 07/16/2023 18:59 WG2095840 p-Isopropyltoluene U 0.120 1.00 1 07/16/2023 18:59 WG2095840 2-Butanone (MEK)U 1.19 10.0 1 07/16/2023 18:59 WG2095840 Methylene Chloride U 0.430 5.00 1 07/16/2023 18:59 WG2095840 4-Methyl-2-pentanone (MIBK)U 0.478 10.0 1 07/16/2023 18:59 WG2095840 Methyl tert-butyl ether U 0.101 1.00 1 07/16/2023 18:59 WG2095840 Naphthalene U 1.00 5.00 1 07/16/2023 18:59 WG2095840 n-Propylbenzene U 0.0993 1.00 1 07/16/2023 18:59 WG2095840 Styrene U 0.118 1.00 1 07/16/2023 18:59 WG2095840 1,1,1,2-Tetrachloroethane U 0.147 1.00 1 07/16/2023 18:59 WG2095840 1,1,2,2-Tetrachloroethane U 0.133 1.00 1 07/16/2023 18:59 WG2095840 Tetrachloroethene U 0.300 1.00 1 07/16/2023 18:59 WG2095840 Toluene U 0.278 1.00 1 07/16/2023 18:59 WG2095840 1,2,3-Trichlorobenzene U 0.230 1.00 1 07/16/2023 18:59 WG2095840 1,2,4-Trichlorobenzene U 0.481 1.00 1 07/16/2023 18:59 WG2095840 1,1,1-Trichloroethane U 0.149 1.00 1 07/16/2023 18:59 WG2095840 1,1,2-Trichloroethane U 0.158 1.00 1 07/16/2023 18:59 WG2095840 Trichloroethene U 0.190 1.00 1 07/16/2023 18:59 WG2095840 Trichlorofluoromethane U 0.160 5.00 1 07/16/2023 18:59 WG2095840 1,2,3-Trichloropropane U 0.237 2.50 1 07/16/2023 18:59 WG2095840 1,2,4-Trimethylbenzene U 0.322 1.00 1 07/16/2023 18:59 WG2095840 1,3,5-Trimethylbenzene U 0.104 1.00 1 07/16/2023 18:59 WG2095840 Vinyl chloride U 0.234 1.00 1 07/16/2023 18:59 WG2095840 o-Xylene U 0.174 1.00 1 07/16/2023 18:59 WG2095840 m&p-Xylenes U 0.430 2.00 1 07/16/2023 18:59 WG2095840 Xylenes, Total U 0.174 3.00 1 07/16/2023 18:59 WG2095840 ethanol U 42.0 100 1 07/20/2023 23:16 WG2096917 3,3-Dimethyl-1-butanol U 4.51 100 1 07/20/2023 23:16 WG2096917 Ethyl tert-butyl ether U 0.101 1.00 1 07/16/2023 18:59 WG2095840 t-Amyl Alcohol U 4.90 50.0 1 07/16/2023 18:59 WG2095840 tert-Butyl alcohol U 4.06 5.00 1 07/20/2023 23:16 WG2096917 tert-Butyl Formate U 4.51 20.0 1 07/16/2023 18:59 WG2095840 tert-Amyl Methyl Ether U 0.195 1.00 1 07/16/2023 18:59 WG2095840 (S) Toluene-d8 103 80.0-120 07/16/2023 18:59 WG2095840 (S) Toluene-d8 99.9 80.0-120 07/20/2023 23:16 WG2096917 (S) 4-Bromofluorobenzene 94.3 77.0-126 07/16/2023 18:59 WG2095840 (S) 4-Bromofluorobenzene 98.6 77.0-126 07/20/2023 23:16 WG2096917 (S) 1,2-Dichloroethane-d4 111 70.0-130 07/16/2023 18:59 WG2095840 (S) 1,2-Dichloroethane-d4 118 70.0-130 07/20/2023 23:16 WG2096917 EDB / DBCP by Method 8011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Ethylene Dibromide U 0.00557 0.0208 1.04 07/21/2023 16:39 WG2098245 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:12 10 of 60 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:23 10 of 60 SAMPLE RESULTS - 03 L1635814 EB-01-20230711 Collected date/time: 07/11/23 14:40 Volatile Organic Compounds (GC/MS) by Method 6200B-1997/6200B-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Acetone U 11.3 50.0 1 07/16/2023 16:44 WG2095840 Acrolein U 2.54 50.0 1 07/16/2023 16:44 WG2095840 Acrylonitrile U 0.671 10.0 1 07/16/2023 16:44 WG2095840 Benzene U 0.0941 1.00 1 07/16/2023 16:44 WG2095840 Bromobenzene U 0.118 1.00 1 07/16/2023 16:44 WG2095840 Bromodichloromethane U 0.136 1.00 1 07/16/2023 16:44 WG2095840 Bromoform U 0.129 1.00 1 07/16/2023 16:44 WG2095840 Bromomethane U 0.605 5.00 1 07/16/2023 16:44 WG2095840 n-Butylbenzene U 0.157 1.00 1 07/16/2023 16:44 WG2095840 sec-Butylbenzene U 0.125 1.00 1 07/16/2023 16:44 WG2095840 tert-Butylbenzene U 0.127 1.00 1 07/16/2023 16:44 WG2095840 Carbon tetrachloride U 0.128 1.00 1 07/16/2023 16:44 WG2095840 Chlorobenzene U 0.116 1.00 1 07/16/2023 16:44 WG2095840 Chlorodibromomethane U 0.140 1.00 1 07/16/2023 16:44 WG2095840 Chloroethane U 0.192 5.00 1 07/16/2023 16:44 WG2095840 Chloroform 1.50 J 0.111 5.00 1 07/16/2023 16:44 WG2095840 Chloromethane U 0.960 2.50 1 07/16/2023 16:44 WG2095840 2-Chlorotoluene U 0.106 1.00 1 07/16/2023 16:44 WG2095840 4-Chlorotoluene U 0.114 1.00 1 07/16/2023 16:44 WG2095840 1,2-Dibromo-3-Chloropropane U 0.276 5.00 1 07/16/2023 16:44 WG2095840 1,2-Dibromoethane U 0.126 1.00 1 07/16/2023 16:44 WG2095840 Dibromomethane U 0.122 1.00 1 07/16/2023 16:44 WG2095840 1,2-Dichlorobenzene U 0.107 1.00 1 07/16/2023 16:44 WG2095840 1,3-Dichlorobenzene U 0.110 1.00 1 07/16/2023 16:44 WG2095840 1,4-Dichlorobenzene U 0.120 1.00 1 07/16/2023 16:44 WG2095840 Dichlorodifluoromethane U 0.374 5.00 1 07/16/2023 16:44 WG2095840 1,1-Dichloroethane U 0.100 1.00 1 07/16/2023 16:44 WG2095840 1,2-Dichloroethane U 0.0819 1.00 1 07/16/2023 16:44 WG2095840 1,1-Dichloroethene U 0.188 1.00 1 07/16/2023 16:44 WG2095840 cis-1,2-Dichloroethene U 0.126 1.00 1 07/16/2023 16:44 WG2095840 trans-1,2-Dichloroethene U 0.149 1.00 1 07/16/2023 16:44 WG2095840 1,2-Dichloropropane U 0.149 1.00 1 07/16/2023 16:44 WG2095840 1,1-Dichloropropene U 0.142 1.00 1 07/16/2023 16:44 WG2095840 1,3-Dichloropropane U 0.110 1.00 1 07/16/2023 16:44 WG2095840 2,2-Dichloropropane U 0.161 1.00 1 07/16/2023 16:44 WG2095840 Di-isopropyl ether U 0.105 1.00 1 07/16/2023 16:44 WG2095840 Ethylbenzene U 0.137 1.00 1 07/16/2023 16:44 WG2095840 Hexachloro-1,3-butadiene U 0.337 1.00 1 07/16/2023 16:44 WG2095840 Isopropylbenzene U 0.105 1.00 1 07/16/2023 16:44 WG2095840 p-Isopropyltoluene U 0.120 1.00 1 07/16/2023 16:44 WG2095840 2-Butanone (MEK)U 1.19 10.0 1 07/16/2023 16:44 WG2095840 Methylene Chloride U 0.430 5.00 1 07/16/2023 16:44 WG2095840 4-Methyl-2-pentanone (MIBK)U 0.478 10.0 1 07/16/2023 16:44 WG2095840 Methyl tert-butyl ether U 0.101 1.00 1 07/16/2023 16:44 WG2095840 Naphthalene U 1.00 5.00 1 07/16/2023 16:44 WG2095840 n-Propylbenzene U 0.0993 1.00 1 07/16/2023 16:44 WG2095840 Styrene U 0.118 1.00 1 07/16/2023 16:44 WG2095840 1,1,1,2-Tetrachloroethane U 0.147 1.00 1 07/16/2023 16:44 WG2095840 1,1,2,2-Tetrachloroethane U 0.133 1.00 1 07/16/2023 16:44 WG2095840 Tetrachloroethene U 0.300 1.00 1 07/16/2023 16:44 WG2095840 Toluene U 0.278 1.00 1 07/16/2023 16:44 WG2095840 1,2,3-Trichlorobenzene U 0.230 1.00 1 07/16/2023 16:44 WG2095840 1,2,4-Trichlorobenzene U 0.481 1.00 1 07/16/2023 16:44 WG2095840 1,1,1-Trichloroethane U 0.149 1.00 1 07/16/2023 16:44 WG2095840 1,1,2-Trichloroethane U 0.158 1.00 1 07/16/2023 16:44 WG2095840 Trichloroethene U 0.190 1.00 1 07/16/2023 16:44 WG2095840 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:12 11 of 60 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:23 11 of 60 SAMPLE RESULTS - 03 L1635814 EB-01-20230711 Collected date/time: 07/11/23 14:40 Volatile Organic Compounds (GC/MS) by Method 6200B-1997/6200B-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Trichlorofluoromethane U 0.160 5.00 1 07/16/2023 16:44 WG2095840 1,2,3-Trichloropropane U 0.237 2.50 1 07/16/2023 16:44 WG2095840 1,2,4-Trimethylbenzene U 0.322 1.00 1 07/16/2023 16:44 WG2095840 1,3,5-Trimethylbenzene U 0.104 1.00 1 07/16/2023 16:44 WG2095840 Vinyl chloride U 0.234 1.00 1 07/16/2023 16:44 WG2095840 o-Xylene U 0.174 1.00 1 07/16/2023 16:44 WG2095840 m&p-Xylenes U 0.430 2.00 1 07/16/2023 16:44 WG2095840 Xylenes, Total U 0.174 3.00 1 07/16/2023 16:44 WG2095840 ethanol U 42.0 100 1 07/20/2023 23:37 WG2096917 3,3-Dimethyl-1-butanol U 4.51 100 1 07/20/2023 23:37 WG2096917 Ethyl tert-butyl ether U 0.101 1.00 1 07/16/2023 16:44 WG2095840 t-Amyl Alcohol U 4.90 50.0 1 07/16/2023 16:44 WG2095840 tert-Butyl alcohol U 4.06 5.00 1 07/20/2023 23:37 WG2096917 tert-Butyl Formate U 4.51 20.0 1 07/16/2023 16:44 WG2095840 tert-Amyl Methyl Ether U 0.195 1.00 1 07/16/2023 16:44 WG2095840 (S) Toluene-d8 103 80.0-120 07/16/2023 16:44 WG2095840 (S) Toluene-d8 101 80.0-120 07/20/2023 23:37 WG2096917 (S) 4-Bromofluorobenzene 99.2 77.0-126 07/16/2023 16:44 WG2095840 (S) 4-Bromofluorobenzene 101 77.0-126 07/20/2023 23:37 WG2096917 (S) 1,2-Dichloroethane-d4 113 70.0-130 07/16/2023 16:44 WG2095840 (S) 1,2-Dichloroethane-d4 119 70.0-130 07/20/2023 23:37 WG2096917 EDB / DBCP by Method 8011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Ethylene Dibromide U 0.00536 0.0200 1 07/21/2023 16:52 WG2098245 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:12 12 of 60 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:23 12 of 60 SAMPLE RESULTS - 04 L1635814 MW-5-20230711 Collected date/time: 07/11/23 17:20 Wet Chemistry by Method 3500Fe B-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Ferrous Iron 22.0 J T8 15.0 50.0 1 07/16/2023 16:10 WG2095725 Wet Chemistry by Method 9056A Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Nitrate 15000 T8 48.0 100 1 07/21/2023 17:03 WG2099142 Sulfate 1120 J 594 5000 1 07/21/2023 17:03 WG2099142 Wet Chemistry by Method 9060A Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time TOC (Total Organic Carbon)952 B J 102 1000 1 07/27/2023 17:52 WG2100976 Metals (ICP) by Method 6010D Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Iron 3110 18.0 100 1 07/23/2023 13:35 WG2096554 Volatile Organic Compounds (GC) by Method RSK175 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Methane U 2.91 10.0 1 07/18/2023 13:17 WG2096697 Volatile Organic Compounds (GC/MS) by Method 6200B-1997/6200B-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Acetone U 11.3 50.0 1 07/16/2023 19:18 WG2095840 Acrolein U 2.54 50.0 1 07/16/2023 19:18 WG2095840 Acrylonitrile U 0.671 10.0 1 07/16/2023 19:18 WG2095840 Benzene U 0.0941 1.00 1 07/16/2023 19:18 WG2095840 Bromobenzene U 0.118 1.00 1 07/16/2023 19:18 WG2095840 Bromodichloromethane U 0.136 1.00 1 07/16/2023 19:18 WG2095840 Bromoform U 0.129 1.00 1 07/16/2023 19:18 WG2095840 Bromomethane U 0.605 5.00 1 07/16/2023 19:18 WG2095840 n-Butylbenzene U 0.157 1.00 1 07/16/2023 19:18 WG2095840 sec-Butylbenzene U 0.125 1.00 1 07/16/2023 19:18 WG2095840 tert-Butylbenzene U 0.127 1.00 1 07/16/2023 19:18 WG2095840 Carbon tetrachloride U 0.128 1.00 1 07/16/2023 19:18 WG2095840 Chlorobenzene U 0.116 1.00 1 07/16/2023 19:18 WG2095840 Chlorodibromomethane U 0.140 1.00 1 07/16/2023 19:18 WG2095840 Chloroethane U 0.192 5.00 1 07/16/2023 19:18 WG2095840 Chloroform 0.225 J 0.111 5.00 1 07/16/2023 19:18 WG2095840 Chloromethane U 0.960 2.50 1 07/16/2023 19:18 WG2095840 2-Chlorotoluene U 0.106 1.00 1 07/16/2023 19:18 WG2095840 4-Chlorotoluene U 0.114 1.00 1 07/16/2023 19:18 WG2095840 1,2-Dibromo-3-Chloropropane U 0.276 5.00 1 07/16/2023 19:18 WG2095840 1,2-Dibromoethane U 0.126 1.00 1 07/16/2023 19:18 WG2095840 Dibromomethane U 0.122 1.00 1 07/16/2023 19:18 WG2095840 1,2-Dichlorobenzene U 0.107 1.00 1 07/16/2023 19:18 WG2095840 1,3-Dichlorobenzene U 0.110 1.00 1 07/16/2023 19:18 WG2095840 1,4-Dichlorobenzene U 0.120 1.00 1 07/16/2023 19:18 WG2095840 Dichlorodifluoromethane U 0.374 5.00 1 07/16/2023 19:18 WG2095840 1,1-Dichloroethane U 0.100 1.00 1 07/16/2023 19:18 WG2095840 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:12 13 of 60 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:23 13 of 60 SAMPLE RESULTS - 04 L1635814 MW-5-20230711 Collected date/time: 07/11/23 17:20 Volatile Organic Compounds (GC/MS) by Method 6200B-1997/6200B-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time 1,2-Dichloroethane U 0.0819 1.00 1 07/16/2023 19:18 WG2095840 1,1-Dichloroethene U 0.188 1.00 1 07/16/2023 19:18 WG2095840 cis-1,2-Dichloroethene U 0.126 1.00 1 07/16/2023 19:18 WG2095840 trans-1,2-Dichloroethene U 0.149 1.00 1 07/16/2023 19:18 WG2095840 1,2-Dichloropropane U 0.149 1.00 1 07/16/2023 19:18 WG2095840 1,1-Dichloropropene U 0.142 1.00 1 07/16/2023 19:18 WG2095840 1,3-Dichloropropane U 0.110 1.00 1 07/16/2023 19:18 WG2095840 2,2-Dichloropropane U 0.161 1.00 1 07/16/2023 19:18 WG2095840 Di-isopropyl ether U 0.105 1.00 1 07/16/2023 19:18 WG2095840 Ethylbenzene U 0.137 1.00 1 07/16/2023 19:18 WG2095840 Hexachloro-1,3-butadiene U 0.337 1.00 1 07/16/2023 19:18 WG2095840 Isopropylbenzene U 0.105 1.00 1 07/16/2023 19:18 WG2095840 p-Isopropyltoluene U 0.120 1.00 1 07/16/2023 19:18 WG2095840 2-Butanone (MEK)U 1.19 10.0 1 07/16/2023 19:18 WG2095840 Methylene Chloride U 0.430 5.00 1 07/16/2023 19:18 WG2095840 4-Methyl-2-pentanone (MIBK)U 0.478 10.0 1 07/16/2023 19:18 WG2095840 Methyl tert-butyl ether U 0.101 1.00 1 07/16/2023 19:18 WG2095840 Naphthalene U 1.00 5.00 1 07/16/2023 19:18 WG2095840 n-Propylbenzene U 0.0993 1.00 1 07/16/2023 19:18 WG2095840 Styrene U 0.118 1.00 1 07/16/2023 19:18 WG2095840 1,1,1,2-Tetrachloroethane U 0.147 1.00 1 07/16/2023 19:18 WG2095840 1,1,2,2-Tetrachloroethane U 0.133 1.00 1 07/16/2023 19:18 WG2095840 Tetrachloroethene U 0.300 1.00 1 07/16/2023 19:18 WG2095840 Toluene U 0.278 1.00 1 07/16/2023 19:18 WG2095840 1,2,3-Trichlorobenzene U 0.230 1.00 1 07/16/2023 19:18 WG2095840 1,2,4-Trichlorobenzene U 0.481 1.00 1 07/16/2023 19:18 WG2095840 1,1,1-Trichloroethane U 0.149 1.00 1 07/16/2023 19:18 WG2095840 1,1,2-Trichloroethane U 0.158 1.00 1 07/16/2023 19:18 WG2095840 Trichloroethene U 0.190 1.00 1 07/16/2023 19:18 WG2095840 Trichlorofluoromethane U 0.160 5.00 1 07/16/2023 19:18 WG2095840 1,2,3-Trichloropropane U 0.237 2.50 1 07/16/2023 19:18 WG2095840 1,2,4-Trimethylbenzene U 0.322 1.00 1 07/16/2023 19:18 WG2095840 1,3,5-Trimethylbenzene U 0.104 1.00 1 07/16/2023 19:18 WG2095840 Vinyl chloride U 0.234 1.00 1 07/16/2023 19:18 WG2095840 o-Xylene U 0.174 1.00 1 07/16/2023 19:18 WG2095840 m&p-Xylenes U 0.430 2.00 1 07/16/2023 19:18 WG2095840 Xylenes, Total U 0.174 3.00 1 07/16/2023 19:18 WG2095840 ethanol U 42.0 100 1 07/20/2023 23:57 WG2096917 3,3-Dimethyl-1-butanol U 4.51 100 1 07/20/2023 23:57 WG2096917 Ethyl tert-butyl ether U 0.101 1.00 1 07/16/2023 19:18 WG2095840 t-Amyl Alcohol U 4.90 50.0 1 07/16/2023 19:18 WG2095840 tert-Butyl alcohol U 4.06 5.00 1 07/20/2023 23:57 WG2096917 tert-Butyl Formate U 4.51 20.0 1 07/16/2023 19:18 WG2095840 tert-Amyl Methyl Ether U 0.195 1.00 1 07/16/2023 19:18 WG2095840 (S) Toluene-d8 103 80.0-120 07/16/2023 19:18 WG2095840 (S) Toluene-d8 101 80.0-120 07/20/2023 23:57 WG2096917 (S) 4-Bromofluorobenzene 96.6 77.0-126 07/16/2023 19:18 WG2095840 (S) 4-Bromofluorobenzene 101 77.0-126 07/20/2023 23:57 WG2096917 (S) 1,2-Dichloroethane-d4 110 70.0-130 07/16/2023 19:18 WG2095840 (S) 1,2-Dichloroethane-d4 118 70.0-130 07/20/2023 23:57 WG2096917 EDB / DBCP by Method 8011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Ethylene Dibromide U 0.00574 0.0214 1.07 07/21/2023 17:06 WG2098245 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:12 14 of 60 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:23 14 of 60 SAMPLE RESULTS - 05 L1635814 MW-6-20230712 Collected date/time: 07/12/23 11:10 Wet Chemistry by Method 3500Fe B-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Ferrous Iron U T8 15.0 50.0 1 07/16/2023 16:10 WG2095725 Wet Chemistry by Method 9056A Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Nitrate 923 T8 48.0 100 1 07/21/2023 17:30 WG2099142 Sulfate 15400 594 5000 1 07/21/2023 17:30 WG2099142 Wet Chemistry by Method 9060A Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time TOC (Total Organic Carbon)591 B J 102 1000 1 07/27/2023 18:04 WG2100976 Metals (ICP) by Method 6010D Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Iron 2300 18.0 100 1 07/23/2023 13:19 WG2096554 Volatile Organic Compounds (GC) by Method RSK175 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Methane U 2.91 10.0 1 07/18/2023 13:20 WG2096697 Volatile Organic Compounds (GC/MS) by Method 6200B-1997/6200B-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Acetone U J3 11.3 50.0 1 07/16/2023 19:37 WG2095840 Acrolein U 2.54 50.0 1 07/16/2023 19:37 WG2095840 Acrylonitrile U 0.671 10.0 1 07/16/2023 19:37 WG2095840 Benzene U 0.0941 1.00 1 07/16/2023 19:37 WG2095840 Bromobenzene U 0.118 1.00 1 07/16/2023 19:37 WG2095840 Bromodichloromethane U 0.136 1.00 1 07/16/2023 19:37 WG2095840 Bromoform U 0.129 1.00 1 07/16/2023 19:37 WG2095840 Bromomethane U 0.605 5.00 1 07/16/2023 19:37 WG2095840 n-Butylbenzene U 0.157 1.00 1 07/16/2023 19:37 WG2095840 sec-Butylbenzene U 0.125 1.00 1 07/16/2023 19:37 WG2095840 tert-Butylbenzene U 0.127 1.00 1 07/16/2023 19:37 WG2095840 Carbon tetrachloride U 0.128 1.00 1 07/16/2023 19:37 WG2095840 Chlorobenzene U 0.116 1.00 1 07/16/2023 19:37 WG2095840 Chlorodibromomethane U 0.140 1.00 1 07/16/2023 19:37 WG2095840 Chloroethane U 0.192 5.00 1 07/16/2023 19:37 WG2095840 Chloroform U 0.111 5.00 1 07/16/2023 19:37 WG2095840 Chloromethane U 0.960 2.50 1 07/16/2023 19:37 WG2095840 2-Chlorotoluene U 0.106 1.00 1 07/16/2023 19:37 WG2095840 4-Chlorotoluene U 0.114 1.00 1 07/16/2023 19:37 WG2095840 1,2-Dibromo-3-Chloropropane U 0.276 5.00 1 07/16/2023 19:37 WG2095840 1,2-Dibromoethane U 0.126 1.00 1 07/16/2023 19:37 WG2095840 Dibromomethane U 0.122 1.00 1 07/16/2023 19:37 WG2095840 1,2-Dichlorobenzene U 0.107 1.00 1 07/16/2023 19:37 WG2095840 1,3-Dichlorobenzene U 0.110 1.00 1 07/16/2023 19:37 WG2095840 1,4-Dichlorobenzene U 0.120 1.00 1 07/16/2023 19:37 WG2095840 Dichlorodifluoromethane U 0.374 5.00 1 07/16/2023 19:37 WG2095840 1,1-Dichloroethane U 0.100 1.00 1 07/16/2023 19:37 WG2095840 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:12 15 of 60 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:23 15 of 60 SAMPLE RESULTS - 05 L1635814 MW-6-20230712 Collected date/time: 07/12/23 11:10 Volatile Organic Compounds (GC/MS) by Method 6200B-1997/6200B-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time 1,2-Dichloroethane U 0.0819 1.00 1 07/16/2023 19:37 WG2095840 1,1-Dichloroethene U 0.188 1.00 1 07/16/2023 19:37 WG2095840 cis-1,2-Dichloroethene U 0.126 1.00 1 07/16/2023 19:37 WG2095840 trans-1,2-Dichloroethene U 0.149 1.00 1 07/16/2023 19:37 WG2095840 1,2-Dichloropropane U 0.149 1.00 1 07/16/2023 19:37 WG2095840 1,1-Dichloropropene U 0.142 1.00 1 07/16/2023 19:37 WG2095840 1,3-Dichloropropane U 0.110 1.00 1 07/16/2023 19:37 WG2095840 2,2-Dichloropropane U 0.161 1.00 1 07/16/2023 19:37 WG2095840 Di-isopropyl ether U 0.105 1.00 1 07/16/2023 19:37 WG2095840 Ethylbenzene U 0.137 1.00 1 07/16/2023 19:37 WG2095840 Hexachloro-1,3-butadiene U 0.337 1.00 1 07/16/2023 19:37 WG2095840 Isopropylbenzene U 0.105 1.00 1 07/16/2023 19:37 WG2095840 p-Isopropyltoluene U 0.120 1.00 1 07/16/2023 19:37 WG2095840 2-Butanone (MEK)U 1.19 10.0 1 07/16/2023 19:37 WG2095840 Methylene Chloride U 0.430 5.00 1 07/16/2023 19:37 WG2095840 4-Methyl-2-pentanone (MIBK)U 0.478 10.0 1 07/16/2023 19:37 WG2095840 Methyl tert-butyl ether U 0.101 1.00 1 07/16/2023 19:37 WG2095840 Naphthalene U 1.00 5.00 1 07/16/2023 19:37 WG2095840 n-Propylbenzene U 0.0993 1.00 1 07/16/2023 19:37 WG2095840 Styrene U 0.118 1.00 1 07/16/2023 19:37 WG2095840 1,1,1,2-Tetrachloroethane U 0.147 1.00 1 07/16/2023 19:37 WG2095840 1,1,2,2-Tetrachloroethane U 0.133 1.00 1 07/16/2023 19:37 WG2095840 Tetrachloroethene U 0.300 1.00 1 07/16/2023 19:37 WG2095840 Toluene U 0.278 1.00 1 07/16/2023 19:37 WG2095840 1,2,3-Trichlorobenzene U 0.230 1.00 1 07/16/2023 19:37 WG2095840 1,2,4-Trichlorobenzene U 0.481 1.00 1 07/16/2023 19:37 WG2095840 1,1,1-Trichloroethane U 0.149 1.00 1 07/16/2023 19:37 WG2095840 1,1,2-Trichloroethane U 0.158 1.00 1 07/16/2023 19:37 WG2095840 Trichloroethene U 0.190 1.00 1 07/16/2023 19:37 WG2095840 Trichlorofluoromethane U 0.160 5.00 1 07/16/2023 19:37 WG2095840 1,2,3-Trichloropropane U 0.237 2.50 1 07/16/2023 19:37 WG2095840 1,2,4-Trimethylbenzene U 0.322 1.00 1 07/16/2023 19:37 WG2095840 1,3,5-Trimethylbenzene U 0.104 1.00 1 07/16/2023 19:37 WG2095840 Vinyl chloride U 0.234 1.00 1 07/16/2023 19:37 WG2095840 o-Xylene U 0.174 1.00 1 07/16/2023 19:37 WG2095840 m&p-Xylenes U 0.430 2.00 1 07/16/2023 19:37 WG2095840 Xylenes, Total U 0.174 3.00 1 07/16/2023 19:37 WG2095840 ethanol U 42.0 100 1 07/21/2023 00:18 WG2096917 3,3-Dimethyl-1-butanol U 4.51 100 1 07/21/2023 00:18 WG2096917 Ethyl tert-butyl ether U 0.101 1.00 1 07/16/2023 19:37 WG2095840 t-Amyl Alcohol U 4.90 50.0 1 07/16/2023 19:37 WG2095840 tert-Butyl alcohol U 4.06 5.00 1 07/21/2023 00:18 WG2096917 tert-Butyl Formate U 4.51 20.0 1 07/16/2023 19:37 WG2095840 tert-Amyl Methyl Ether U 0.195 1.00 1 07/16/2023 19:37 WG2095840 (S) Toluene-d8 103 80.0-120 07/16/2023 19:37 WG2095840 (S) Toluene-d8 99.1 80.0-120 07/21/2023 00:18 WG2096917 (S) 4-Bromofluorobenzene 97.3 77.0-126 07/16/2023 19:37 WG2095840 (S) 4-Bromofluorobenzene 98.8 77.0-126 07/21/2023 00:18 WG2096917 (S) 1,2-Dichloroethane-d4 110 70.0-130 07/16/2023 19:37 WG2095840 (S) 1,2-Dichloroethane-d4 118 70.0-130 07/21/2023 00:18 WG2096917 EDB / DBCP by Method 8011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Ethylene Dibromide U 0.00536 0.0200 1 07/21/2023 12:14 WG2098245 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:12 16 of 60 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:23 16 of 60 SAMPLE RESULTS - 06 L1635814 EB-02-20230712 Collected date/time: 07/12/23 12:25 Volatile Organic Compounds (GC/MS) by Method 6200B-1997/6200B-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Acetone U 11.3 50.0 1 07/16/2023 17:03 WG2095840 Acrolein U 2.54 50.0 1 07/16/2023 17:03 WG2095840 Acrylonitrile U 0.671 10.0 1 07/16/2023 17:03 WG2095840 Benzene U 0.0941 1.00 1 07/16/2023 17:03 WG2095840 Bromobenzene U 0.118 1.00 1 07/16/2023 17:03 WG2095840 Bromodichloromethane U 0.136 1.00 1 07/16/2023 17:03 WG2095840 Bromoform U 0.129 1.00 1 07/16/2023 17:03 WG2095840 Bromomethane U 0.605 5.00 1 07/16/2023 17:03 WG2095840 n-Butylbenzene U 0.157 1.00 1 07/16/2023 17:03 WG2095840 sec-Butylbenzene U 0.125 1.00 1 07/16/2023 17:03 WG2095840 tert-Butylbenzene U 0.127 1.00 1 07/16/2023 17:03 WG2095840 Carbon tetrachloride U 0.128 1.00 1 07/16/2023 17:03 WG2095840 Chlorobenzene U 0.116 1.00 1 07/16/2023 17:03 WG2095840 Chlorodibromomethane U 0.140 1.00 1 07/16/2023 17:03 WG2095840 Chloroethane U 0.192 5.00 1 07/16/2023 17:03 WG2095840 Chloroform 1.48 J 0.111 5.00 1 07/16/2023 17:03 WG2095840 Chloromethane U 0.960 2.50 1 07/16/2023 17:03 WG2095840 2-Chlorotoluene U 0.106 1.00 1 07/16/2023 17:03 WG2095840 4-Chlorotoluene U 0.114 1.00 1 07/16/2023 17:03 WG2095840 1,2-Dibromo-3-Chloropropane U 0.276 5.00 1 07/16/2023 17:03 WG2095840 1,2-Dibromoethane U 0.126 1.00 1 07/16/2023 17:03 WG2095840 Dibromomethane U 0.122 1.00 1 07/16/2023 17:03 WG2095840 1,2-Dichlorobenzene U 0.107 1.00 1 07/16/2023 17:03 WG2095840 1,3-Dichlorobenzene U 0.110 1.00 1 07/16/2023 17:03 WG2095840 1,4-Dichlorobenzene U 0.120 1.00 1 07/16/2023 17:03 WG2095840 Dichlorodifluoromethane U 0.374 5.00 1 07/16/2023 17:03 WG2095840 1,1-Dichloroethane U 0.100 1.00 1 07/16/2023 17:03 WG2095840 1,2-Dichloroethane U 0.0819 1.00 1 07/16/2023 17:03 WG2095840 1,1-Dichloroethene U 0.188 1.00 1 07/16/2023 17:03 WG2095840 cis-1,2-Dichloroethene U 0.126 1.00 1 07/16/2023 17:03 WG2095840 trans-1,2-Dichloroethene U 0.149 1.00 1 07/16/2023 17:03 WG2095840 1,2-Dichloropropane U 0.149 1.00 1 07/16/2023 17:03 WG2095840 1,1-Dichloropropene U 0.142 1.00 1 07/16/2023 17:03 WG2095840 1,3-Dichloropropane U 0.110 1.00 1 07/16/2023 17:03 WG2095840 2,2-Dichloropropane U 0.161 1.00 1 07/16/2023 17:03 WG2095840 Di-isopropyl ether U 0.105 1.00 1 07/16/2023 17:03 WG2095840 Ethylbenzene U 0.137 1.00 1 07/16/2023 17:03 WG2095840 Hexachloro-1,3-butadiene U 0.337 1.00 1 07/16/2023 17:03 WG2095840 Isopropylbenzene U 0.105 1.00 1 07/16/2023 17:03 WG2095840 p-Isopropyltoluene U 0.120 1.00 1 07/16/2023 17:03 WG2095840 2-Butanone (MEK)U 1.19 10.0 1 07/16/2023 17:03 WG2095840 Methylene Chloride U 0.430 5.00 1 07/16/2023 17:03 WG2095840 4-Methyl-2-pentanone (MIBK)U 0.478 10.0 1 07/16/2023 17:03 WG2095840 Methyl tert-butyl ether U 0.101 1.00 1 07/16/2023 17:03 WG2095840 Naphthalene U 1.00 5.00 1 07/16/2023 17:03 WG2095840 n-Propylbenzene U 0.0993 1.00 1 07/16/2023 17:03 WG2095840 Styrene U 0.118 1.00 1 07/16/2023 17:03 WG2095840 1,1,1,2-Tetrachloroethane U 0.147 1.00 1 07/16/2023 17:03 WG2095840 1,1,2,2-Tetrachloroethane U 0.133 1.00 1 07/16/2023 17:03 WG2095840 Tetrachloroethene U 0.300 1.00 1 07/16/2023 17:03 WG2095840 Toluene U 0.278 1.00 1 07/16/2023 17:03 WG2095840 1,2,3-Trichlorobenzene U 0.230 1.00 1 07/16/2023 17:03 WG2095840 1,2,4-Trichlorobenzene U 0.481 1.00 1 07/16/2023 17:03 WG2095840 1,1,1-Trichloroethane U 0.149 1.00 1 07/16/2023 17:03 WG2095840 1,1,2-Trichloroethane U 0.158 1.00 1 07/16/2023 17:03 WG2095840 Trichloroethene U 0.190 1.00 1 07/16/2023 17:03 WG2095840 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:12 17 of 60 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:23 17 of 60 SAMPLE RESULTS - 06 L1635814 EB-02-20230712 Collected date/time: 07/12/23 12:25 Volatile Organic Compounds (GC/MS) by Method 6200B-1997/6200B-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Trichlorofluoromethane U 0.160 5.00 1 07/16/2023 17:03 WG2095840 1,2,3-Trichloropropane U 0.237 2.50 1 07/16/2023 17:03 WG2095840 1,2,4-Trimethylbenzene U 0.322 1.00 1 07/16/2023 17:03 WG2095840 1,3,5-Trimethylbenzene U 0.104 1.00 1 07/16/2023 17:03 WG2095840 Vinyl chloride U 0.234 1.00 1 07/16/2023 17:03 WG2095840 o-Xylene U 0.174 1.00 1 07/16/2023 17:03 WG2095840 m&p-Xylenes U 0.430 2.00 1 07/16/2023 17:03 WG2095840 Xylenes, Total U 0.174 3.00 1 07/16/2023 17:03 WG2095840 ethanol U 42.0 100 1 07/21/2023 00:38 WG2096917 3,3-Dimethyl-1-butanol U 4.51 100 1 07/21/2023 00:38 WG2096917 Ethyl tert-butyl ether U 0.101 1.00 1 07/16/2023 17:03 WG2095840 t-Amyl Alcohol U 4.90 50.0 1 07/16/2023 17:03 WG2095840 tert-Butyl alcohol U 4.06 5.00 1 07/21/2023 00:38 WG2096917 tert-Butyl Formate U 4.51 20.0 1 07/16/2023 17:03 WG2095840 tert-Amyl Methyl Ether U 0.195 1.00 1 07/16/2023 17:03 WG2095840 (S) Toluene-d8 105 80.0-120 07/16/2023 17:03 WG2095840 (S) Toluene-d8 101 80.0-120 07/21/2023 00:38 WG2096917 (S) 4-Bromofluorobenzene 98.8 77.0-126 07/16/2023 17:03 WG2095840 (S) 4-Bromofluorobenzene 99.6 77.0-126 07/21/2023 00:38 WG2096917 (S) 1,2-Dichloroethane-d4 108 70.0-130 07/16/2023 17:03 WG2095840 (S) 1,2-Dichloroethane-d4 118 70.0-130 07/21/2023 00:38 WG2096917 EDB / DBCP by Method 8011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Ethylene Dibromide U 0.00536 0.0200 1 07/21/2023 17:19 WG2098245 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:12 18 of 60 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:23 18 of 60 SAMPLE RESULTS - 07 L1635814 MW-7-20230712 Collected date/time: 07/12/23 15:45 Wet Chemistry by Method 3500Fe B-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Ferrous Iron 9920 T8 150 500 10 07/16/2023 16:11 WG2095725 Wet Chemistry by Method 9056A Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Nitrate 56.2 J T8 48.0 100 1 07/21/2023 18:51 WG2099142 Sulfate U 594 5000 1 07/21/2023 18:51 WG2099142 Wet Chemistry by Method 9060A Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time TOC (Total Organic Carbon)11400 102 1000 1 07/27/2023 19:01 WG2100976 Metals (ICP) by Method 6010D Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Iron 8910 18.0 100 1 07/23/2023 13:38 WG2096554 Volatile Organic Compounds (GC) by Method RSK175 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Methane 249 2.91 10.0 1 07/18/2023 13:23 WG2096697 Volatile Organic Compounds (GC/MS) by Method 6200B-1997/6200B-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Acetone U 565 2500 50 07/16/2023 21:13 WG2095840 Acrolein U 127 2500 50 07/16/2023 21:13 WG2095840 Acrylonitrile U 33.6 500 50 07/16/2023 21:13 WG2095840 Benzene 6420 4.71 50.0 50 07/16/2023 21:13 WG2095840 Bromobenzene U 5.90 50.0 50 07/16/2023 21:13 WG2095840 Bromodichloromethane U 6.80 50.0 50 07/16/2023 21:13 WG2095840 Bromoform U 6.45 50.0 50 07/16/2023 21:13 WG2095840 Bromomethane U 30.3 250 50 07/16/2023 21:13 WG2095840 n-Butylbenzene 14.3 J 7.85 50.0 50 07/16/2023 21:13 WG2095840 sec-Butylbenzene 6.88 J 6.25 50.0 50 07/16/2023 21:13 WG2095840 tert-Butylbenzene U 6.35 50.0 50 07/16/2023 21:13 WG2095840 Carbon tetrachloride U 6.40 50.0 50 07/16/2023 21:13 WG2095840 Chlorobenzene U 5.80 50.0 50 07/16/2023 21:13 WG2095840 Chlorodibromomethane U 7.00 50.0 50 07/16/2023 21:13 WG2095840 Chloroethane U 9.60 250 50 07/16/2023 21:13 WG2095840 Chloroform U 5.55 250 50 07/16/2023 21:13 WG2095840 Chloromethane U 48.0 125 50 07/16/2023 21:13 WG2095840 2-Chlorotoluene U 5.30 50.0 50 07/16/2023 21:13 WG2095840 4-Chlorotoluene U 5.70 50.0 50 07/16/2023 21:13 WG2095840 1,2-Dibromo-3-Chloropropane U 13.8 250 50 07/16/2023 21:13 WG2095840 1,2-Dibromoethane U 6.30 50.0 50 07/16/2023 21:13 WG2095840 Dibromomethane U 6.10 50.0 50 07/16/2023 21:13 WG2095840 1,2-Dichlorobenzene U 5.35 50.0 50 07/16/2023 21:13 WG2095840 1,3-Dichlorobenzene U 5.50 50.0 50 07/16/2023 21:13 WG2095840 1,4-Dichlorobenzene U 6.00 50.0 50 07/16/2023 21:13 WG2095840 Dichlorodifluoromethane U 18.7 250 50 07/16/2023 21:13 WG2095840 1,1-Dichloroethane U 5.00 50.0 50 07/16/2023 21:13 WG2095840 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:12 19 of 60 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:23 19 of 60 SAMPLE RESULTS - 07 L1635814 MW-7-20230712 Collected date/time: 07/12/23 15:45 Volatile Organic Compounds (GC/MS) by Method 6200B-1997/6200B-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time 1,2-Dichloroethane 91.8 4.09 50.0 50 07/16/2023 21:13 WG2095840 1,1-Dichloroethene U 9.40 50.0 50 07/16/2023 21:13 WG2095840 cis-1,2-Dichloroethene U 6.30 50.0 50 07/16/2023 21:13 WG2095840 trans-1,2-Dichloroethene U 7.45 50.0 50 07/16/2023 21:13 WG2095840 1,2-Dichloropropane U 7.45 50.0 50 07/16/2023 21:13 WG2095840 1,1-Dichloropropene U 7.10 50.0 50 07/16/2023 21:13 WG2095840 1,3-Dichloropropane U 5.50 50.0 50 07/16/2023 21:13 WG2095840 2,2-Dichloropropane U 8.05 50.0 50 07/16/2023 21:13 WG2095840 Di-isopropyl ether 29.6 J 5.25 50.0 50 07/16/2023 21:13 WG2095840 Ethylbenzene 2010 6.85 50.0 50 07/16/2023 21:13 WG2095840 Hexachloro-1,3-butadiene U 16.9 50.0 50 07/16/2023 21:13 WG2095840 Isopropylbenzene 82.2 5.25 50.0 50 07/16/2023 21:13 WG2095840 p-Isopropyltoluene U 6.00 50.0 50 07/16/2023 21:13 WG2095840 2-Butanone (MEK)U 59.5 500 50 07/16/2023 21:13 WG2095840 Methylene Chloride U 21.5 250 50 07/16/2023 21:13 WG2095840 4-Methyl-2-pentanone (MIBK)U 23.9 500 50 07/16/2023 21:13 WG2095840 Methyl tert-butyl ether 2470 5.05 50.0 50 07/16/2023 21:13 WG2095840 Naphthalene 454 50.0 250 50 07/16/2023 21:13 WG2095840 n-Propylbenzene 163 4.97 50.0 50 07/16/2023 21:13 WG2095840 Styrene 6.54 J 5.90 50.0 50 07/16/2023 21:13 WG2095840 1,1,1,2-Tetrachloroethane U 7.35 50.0 50 07/16/2023 21:13 WG2095840 1,1,2,2-Tetrachloroethane U 6.65 50.0 50 07/16/2023 21:13 WG2095840 Tetrachloroethene U 15.0 50.0 50 07/16/2023 21:13 WG2095840 Toluene 85.5 13.9 50.0 50 07/16/2023 21:13 WG2095840 1,2,3-Trichlorobenzene U 11.5 50.0 50 07/16/2023 21:13 WG2095840 1,2,4-Trichlorobenzene U 24.1 50.0 50 07/16/2023 21:13 WG2095840 1,1,1-Trichloroethane U 7.45 50.0 50 07/16/2023 21:13 WG2095840 1,1,2-Trichloroethane U 7.90 50.0 50 07/16/2023 21:13 WG2095840 Trichloroethene U 9.50 50.0 50 07/16/2023 21:13 WG2095840 Trichlorofluoromethane U 8.00 250 50 07/16/2023 21:13 WG2095840 1,2,3-Trichloropropane U 11.9 125 50 07/16/2023 21:13 WG2095840 1,2,4-Trimethylbenzene 582 16.1 50.0 50 07/16/2023 21:13 WG2095840 1,3,5-Trimethylbenzene 199 5.20 50.0 50 07/16/2023 21:13 WG2095840 Vinyl chloride U 11.7 50.0 50 07/16/2023 21:13 WG2095840 o-Xylene 359 8.70 50.0 50 07/16/2023 21:13 WG2095840 m&p-Xylenes 1000 21.5 100 50 07/16/2023 21:13 WG2095840 Xylenes, Total 1360 8.70 150 50 07/16/2023 21:13 WG2095840 ethanol U 2100 5000 50 07/21/2023 03:42 WG2096917 3,3-Dimethyl-1-butanol U 226 5000 50 07/21/2023 03:42 WG2096917 Ethyl tert-butyl ether U 5.05 50.0 50 07/16/2023 21:13 WG2095840 t-Amyl Alcohol 1030 J 245 2500 50 07/16/2023 21:13 WG2095840 tert-Butyl alcohol U 203 250 50 07/21/2023 03:42 WG2096917 tert-Butyl Formate U 226 1000 50 07/16/2023 21:13 WG2095840 tert-Amyl Methyl Ether U 9.75 50.0 50 07/16/2023 21:13 WG2095840 (S) Toluene-d8 102 80.0-120 07/16/2023 21:13 WG2095840 (S) Toluene-d8 96.5 80.0-120 07/21/2023 03:42 WG2096917 (S) 4-Bromofluorobenzene 98.4 77.0-126 07/16/2023 21:13 WG2095840 (S) 4-Bromofluorobenzene 98.4 77.0-126 07/21/2023 03:42 WG2096917 (S) 1,2-Dichloroethane-d4 110 70.0-130 07/16/2023 21:13 WG2095840 (S) 1,2-Dichloroethane-d4 118 70.0-130 07/21/2023 03:42 WG2096917 EDB / DBCP by Method 8011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Ethylene Dibromide 0.288 0.00541 0.0202 1.01 07/21/2023 17:32 WG2098245 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:12 20 of 60 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:23 20 of 60 SAMPLE RESULTS - 08 L1635814 MW-2-20230712 Collected date/time: 07/12/23 18:10 Wet Chemistry by Method 3500Fe B-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Ferrous Iron 14400 T8 150 500 10 07/16/2023 16:11 WG2095725 Wet Chemistry by Method 9056A Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Nitrate 5460 T8 48.0 100 1 07/21/2023 19:05 WG2099142 Sulfate U 594 5000 1 07/21/2023 19:05 WG2099142 Wet Chemistry by Method 9060A Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time TOC (Total Organic Carbon)39700 102 1000 1 07/27/2023 19:20 WG2100976 Metals (ICP) by Method 6010D Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Iron 12600 18.0 100 1 07/23/2023 13:46 WG2096554 Volatile Organic Compounds (GC) by Method RSK175 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Methane 246 2.91 10.0 1 07/18/2023 13:27 WG2096697 Volatile Organic Compounds (GC/MS) by Method 6200B-1997/6200B-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Acetone U 2260 10000 200 07/16/2023 21:32 WG2095840 Acrolein U 508 10000 200 07/16/2023 21:32 WG2095840 Acrylonitrile U 134 2000 200 07/16/2023 21:32 WG2095840 Benzene 11500 18.8 200 200 07/16/2023 21:32 WG2095840 Bromobenzene U 23.6 200 200 07/16/2023 21:32 WG2095840 Bromodichloromethane U 27.2 200 200 07/16/2023 21:32 WG2095840 Bromoform U 25.8 200 200 07/16/2023 21:32 WG2095840 Bromomethane U 121 1000 200 07/16/2023 21:32 WG2095840 n-Butylbenzene U 31.4 200 200 07/16/2023 21:32 WG2095840 sec-Butylbenzene U 25.0 200 200 07/16/2023 21:32 WG2095840 tert-Butylbenzene U 25.4 200 200 07/16/2023 21:32 WG2095840 Carbon tetrachloride U 25.6 200 200 07/16/2023 21:32 WG2095840 Chlorobenzene U 23.2 200 200 07/16/2023 21:32 WG2095840 Chlorodibromomethane U 28.0 200 200 07/16/2023 21:32 WG2095840 Chloroethane U 38.4 1000 200 07/16/2023 21:32 WG2095840 Chloroform U 22.2 1000 200 07/16/2023 21:32 WG2095840 Chloromethane U 192 500 200 07/16/2023 21:32 WG2095840 2-Chlorotoluene U 21.2 200 200 07/16/2023 21:32 WG2095840 4-Chlorotoluene U 22.8 200 200 07/16/2023 21:32 WG2095840 1,2-Dibromo-3-Chloropropane U 55.2 1000 200 07/16/2023 21:32 WG2095840 1,2-Dibromoethane U 25.2 200 200 07/16/2023 21:32 WG2095840 Dibromomethane U 24.4 200 200 07/16/2023 21:32 WG2095840 1,2-Dichlorobenzene U 21.4 200 200 07/16/2023 21:32 WG2095840 1,3-Dichlorobenzene U 22.0 200 200 07/16/2023 21:32 WG2095840 1,4-Dichlorobenzene U 24.0 200 200 07/16/2023 21:32 WG2095840 Dichlorodifluoromethane U 74.8 1000 200 07/16/2023 21:32 WG2095840 1,1-Dichloroethane U 20.0 200 200 07/16/2023 21:32 WG2095840 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:12 21 of 60 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:23 21 of 60 SAMPLE RESULTS - 08 L1635814 MW-2-20230712 Collected date/time: 07/12/23 18:10 Volatile Organic Compounds (GC/MS) by Method 6200B-1997/6200B-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time 1,2-Dichloroethane 142 J 16.4 200 200 07/16/2023 21:32 WG2095840 1,1-Dichloroethene U 37.6 200 200 07/16/2023 21:32 WG2095840 cis-1,2-Dichloroethene U 25.2 200 200 07/16/2023 21:32 WG2095840 trans-1,2-Dichloroethene U 29.8 200 200 07/16/2023 21:32 WG2095840 1,2-Dichloropropane U 29.8 200 200 07/16/2023 21:32 WG2095840 1,1-Dichloropropene U 28.4 200 200 07/16/2023 21:32 WG2095840 1,3-Dichloropropane U 22.0 200 200 07/16/2023 21:32 WG2095840 2,2-Dichloropropane U 32.2 200 200 07/16/2023 21:32 WG2095840 Di-isopropyl ether 46.3 J 21.0 200 200 07/16/2023 21:32 WG2095840 Ethylbenzene 2890 27.4 200 200 07/16/2023 21:32 WG2095840 Hexachloro-1,3-butadiene U 67.4 200 200 07/16/2023 21:32 WG2095840 Isopropylbenzene 100 J 21.0 200 200 07/16/2023 21:32 WG2095840 p-Isopropyltoluene U 24.0 200 200 07/16/2023 21:32 WG2095840 2-Butanone (MEK)U 238 2000 200 07/16/2023 21:32 WG2095840 Methylene Chloride U 86.0 1000 200 07/16/2023 21:32 WG2095840 4-Methyl-2-pentanone (MIBK)U 95.6 2000 200 07/16/2023 21:32 WG2095840 Methyl tert-butyl ether 5050 20.2 200 200 07/16/2023 21:32 WG2095840 Naphthalene 638 J 200 1000 200 07/16/2023 21:32 WG2095840 n-Propylbenzene 229 19.9 200 200 07/16/2023 21:32 WG2095840 Styrene 51.7 J 23.6 200 200 07/16/2023 21:32 WG2095840 1,1,1,2-Tetrachloroethane U 29.4 200 200 07/16/2023 21:32 WG2095840 1,1,2,2-Tetrachloroethane U 26.6 200 200 07/16/2023 21:32 WG2095840 Tetrachloroethene U 60.0 200 200 07/16/2023 21:32 WG2095840 Toluene 339 55.6 200 200 07/16/2023 21:32 WG2095840 1,2,3-Trichlorobenzene U 46.0 200 200 07/16/2023 21:32 WG2095840 1,2,4-Trichlorobenzene U 96.2 200 200 07/16/2023 21:32 WG2095840 1,1,1-Trichloroethane U 29.8 200 200 07/16/2023 21:32 WG2095840 1,1,2-Trichloroethane U 31.6 200 200 07/16/2023 21:32 WG2095840 Trichloroethene U 38.0 200 200 07/16/2023 21:32 WG2095840 Trichlorofluoromethane U 32.0 1000 200 07/16/2023 21:32 WG2095840 1,2,3-Trichloropropane U 47.4 500 200 07/16/2023 21:32 WG2095840 1,2,4-Trimethylbenzene 1110 64.4 200 200 07/16/2023 21:32 WG2095840 1,3,5-Trimethylbenzene 281 20.8 200 200 07/16/2023 21:32 WG2095840 Vinyl chloride U 46.8 200 200 07/16/2023 21:32 WG2095840 o-Xylene 296 34.8 200 200 07/16/2023 21:32 WG2095840 m&p-Xylenes 2220 86.0 400 200 07/16/2023 21:32 WG2095840 Xylenes, Total 2520 34.8 600 200 07/16/2023 21:32 WG2095840 ethanol U 8400 20000 200 07/21/2023 04:03 WG2096917 3,3-Dimethyl-1-butanol U 902 20000 200 07/21/2023 04:03 WG2096917 Ethyl tert-butyl ether U 20.2 200 200 07/16/2023 21:32 WG2095840 t-Amyl Alcohol 14200 980 10000 200 07/16/2023 21:32 WG2095840 tert-Butyl alcohol 1510 812 1000 200 07/21/2023 04:03 WG2096917 tert-Butyl Formate U 902 4000 200 07/16/2023 21:32 WG2095840 tert-Amyl Methyl Ether U 39.0 200 200 07/16/2023 21:32 WG2095840 (S) Toluene-d8 103 80.0-120 07/16/2023 21:32 WG2095840 (S) Toluene-d8 99.1 80.0-120 07/21/2023 04:03 WG2096917 (S) 4-Bromofluorobenzene 101 77.0-126 07/16/2023 21:32 WG2095840 (S) 4-Bromofluorobenzene 99.8 77.0-126 07/21/2023 04:03 WG2096917 (S) 1,2-Dichloroethane-d4 111 70.0-130 07/16/2023 21:32 WG2095840 (S) 1,2-Dichloroethane-d4 119 70.0-130 07/21/2023 04:03 WG2096917 EDB / DBCP by Method 8011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Ethylene Dibromide 1.41 0.0268 0.100 5 07/24/2023 15:33 WG2098245 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:12 22 of 60 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:23 22 of 60 SAMPLE RESULTS - 09 L1635814 EB-03-20230713 Collected date/time: 07/13/23 08:30 Volatile Organic Compounds (GC/MS) by Method 6200B-1997/6200B-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Acetone U 11.3 50.0 1 07/16/2023 17:23 WG2095840 Acrolein U 2.54 50.0 1 07/16/2023 17:23 WG2095840 Acrylonitrile U 0.671 10.0 1 07/16/2023 17:23 WG2095840 Benzene U 0.0941 1.00 1 07/16/2023 17:23 WG2095840 Bromobenzene U 0.118 1.00 1 07/16/2023 17:23 WG2095840 Bromodichloromethane U 0.136 1.00 1 07/16/2023 17:23 WG2095840 Bromoform U 0.129 1.00 1 07/16/2023 17:23 WG2095840 Bromomethane U 0.605 5.00 1 07/16/2023 17:23 WG2095840 n-Butylbenzene U 0.157 1.00 1 07/16/2023 17:23 WG2095840 sec-Butylbenzene U 0.125 1.00 1 07/16/2023 17:23 WG2095840 tert-Butylbenzene U 0.127 1.00 1 07/16/2023 17:23 WG2095840 Carbon tetrachloride U 0.128 1.00 1 07/16/2023 17:23 WG2095840 Chlorobenzene U 0.116 1.00 1 07/16/2023 17:23 WG2095840 Chlorodibromomethane U 0.140 1.00 1 07/16/2023 17:23 WG2095840 Chloroethane U 0.192 5.00 1 07/16/2023 17:23 WG2095840 Chloroform 1.26 J 0.111 5.00 1 07/16/2023 17:23 WG2095840 Chloromethane U 0.960 2.50 1 07/16/2023 17:23 WG2095840 2-Chlorotoluene U 0.106 1.00 1 07/16/2023 17:23 WG2095840 4-Chlorotoluene U 0.114 1.00 1 07/16/2023 17:23 WG2095840 1,2-Dibromo-3-Chloropropane U 0.276 5.00 1 07/16/2023 17:23 WG2095840 1,2-Dibromoethane U 0.126 1.00 1 07/16/2023 17:23 WG2095840 Dibromomethane U 0.122 1.00 1 07/16/2023 17:23 WG2095840 1,2-Dichlorobenzene U 0.107 1.00 1 07/16/2023 17:23 WG2095840 1,3-Dichlorobenzene U 0.110 1.00 1 07/16/2023 17:23 WG2095840 1,4-Dichlorobenzene U 0.120 1.00 1 07/16/2023 17:23 WG2095840 Dichlorodifluoromethane U 0.374 5.00 1 07/16/2023 17:23 WG2095840 1,1-Dichloroethane U 0.100 1.00 1 07/16/2023 17:23 WG2095840 1,2-Dichloroethane U 0.0819 1.00 1 07/16/2023 17:23 WG2095840 1,1-Dichloroethene U 0.188 1.00 1 07/16/2023 17:23 WG2095840 cis-1,2-Dichloroethene U 0.126 1.00 1 07/16/2023 17:23 WG2095840 trans-1,2-Dichloroethene U 0.149 1.00 1 07/16/2023 17:23 WG2095840 1,2-Dichloropropane U 0.149 1.00 1 07/16/2023 17:23 WG2095840 1,1-Dichloropropene U 0.142 1.00 1 07/16/2023 17:23 WG2095840 1,3-Dichloropropane U 0.110 1.00 1 07/16/2023 17:23 WG2095840 2,2-Dichloropropane U 0.161 1.00 1 07/16/2023 17:23 WG2095840 Di-isopropyl ether U 0.105 1.00 1 07/16/2023 17:23 WG2095840 Ethylbenzene U 0.137 1.00 1 07/16/2023 17:23 WG2095840 Hexachloro-1,3-butadiene U 0.337 1.00 1 07/16/2023 17:23 WG2095840 Isopropylbenzene U 0.105 1.00 1 07/16/2023 17:23 WG2095840 p-Isopropyltoluene U 0.120 1.00 1 07/16/2023 17:23 WG2095840 2-Butanone (MEK)U 1.19 10.0 1 07/16/2023 17:23 WG2095840 Methylene Chloride U 0.430 5.00 1 07/16/2023 17:23 WG2095840 4-Methyl-2-pentanone (MIBK)U 0.478 10.0 1 07/16/2023 17:23 WG2095840 Methyl tert-butyl ether U 0.101 1.00 1 07/16/2023 17:23 WG2095840 Naphthalene U 1.00 5.00 1 07/16/2023 17:23 WG2095840 n-Propylbenzene U 0.0993 1.00 1 07/16/2023 17:23 WG2095840 Styrene U 0.118 1.00 1 07/16/2023 17:23 WG2095840 1,1,1,2-Tetrachloroethane U 0.147 1.00 1 07/16/2023 17:23 WG2095840 1,1,2,2-Tetrachloroethane U 0.133 1.00 1 07/16/2023 17:23 WG2095840 Tetrachloroethene U 0.300 1.00 1 07/16/2023 17:23 WG2095840 Toluene U 0.278 1.00 1 07/16/2023 17:23 WG2095840 1,2,3-Trichlorobenzene U 0.230 1.00 1 07/16/2023 17:23 WG2095840 1,2,4-Trichlorobenzene U 0.481 1.00 1 07/16/2023 17:23 WG2095840 1,1,1-Trichloroethane U 0.149 1.00 1 07/16/2023 17:23 WG2095840 1,1,2-Trichloroethane U 0.158 1.00 1 07/16/2023 17:23 WG2095840 Trichloroethene U 0.190 1.00 1 07/16/2023 17:23 WG2095840 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:12 23 of 60 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:23 23 of 60 SAMPLE RESULTS - 09 L1635814 EB-03-20230713 Collected date/time: 07/13/23 08:30 Volatile Organic Compounds (GC/MS) by Method 6200B-1997/6200B-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Trichlorofluoromethane U 0.160 5.00 1 07/16/2023 17:23 WG2095840 1,2,3-Trichloropropane U 0.237 2.50 1 07/16/2023 17:23 WG2095840 1,2,4-Trimethylbenzene U 0.322 1.00 1 07/16/2023 17:23 WG2095840 1,3,5-Trimethylbenzene U 0.104 1.00 1 07/16/2023 17:23 WG2095840 Vinyl chloride U 0.234 1.00 1 07/16/2023 17:23 WG2095840 o-Xylene U 0.174 1.00 1 07/16/2023 17:23 WG2095840 m&p-Xylenes U 0.430 2.00 1 07/16/2023 17:23 WG2095840 Xylenes, Total U 0.174 3.00 1 07/16/2023 17:23 WG2095840 ethanol U 42.0 100 1 07/21/2023 00:59 WG2096917 3,3-Dimethyl-1-butanol U 4.51 100 1 07/21/2023 00:59 WG2096917 Ethyl tert-butyl ether U 0.101 1.00 1 07/16/2023 17:23 WG2095840 t-Amyl Alcohol U 4.90 50.0 1 07/16/2023 17:23 WG2095840 tert-Butyl alcohol U 4.06 5.00 1 07/21/2023 00:59 WG2096917 tert-Butyl Formate U 4.51 20.0 1 07/16/2023 17:23 WG2095840 tert-Amyl Methyl Ether U 0.195 1.00 1 07/16/2023 17:23 WG2095840 (S) Toluene-d8 105 80.0-120 07/16/2023 17:23 WG2095840 (S) Toluene-d8 100 80.0-120 07/21/2023 00:59 WG2096917 (S) 4-Bromofluorobenzene 96.0 77.0-126 07/16/2023 17:23 WG2095840 (S) 4-Bromofluorobenzene 100 77.0-126 07/21/2023 00:59 WG2096917 (S) 1,2-Dichloroethane-d4 110 70.0-130 07/16/2023 17:23 WG2095840 (S) 1,2-Dichloroethane-d4 118 70.0-130 07/21/2023 00:59 WG2096917 EDB / DBCP by Method 8011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Ethylene Dibromide U 0.00547 0.0204 1.02 07/21/2023 17:57 WG2098245 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:12 24 of 60 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:23 24 of 60 SAMPLE RESULTS - 10 L1635814 MW-1-20230713 Collected date/time: 07/13/23 10:45 Wet Chemistry by Method 3500Fe B-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Ferrous Iron 35.0 J T8 15.0 50.0 1 07/16/2023 11:51 WG2095730 Wet Chemistry by Method 9056A Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Nitrate 2460 T8 48.0 100 1 07/21/2023 19:18 WG2099142 Sulfate 1880 J 594 5000 1 07/21/2023 19:18 WG2099142 Wet Chemistry by Method 9060A Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time TOC (Total Organic Carbon)767 B J 102 1000 1 07/27/2023 19:33 WG2100976 Metals (ICP) by Method 6010D Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Iron 1580 18.0 100 1 07/23/2023 13:49 WG2096554 Volatile Organic Compounds (GC) by Method RSK175 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Methane U 2.91 10.0 1 07/18/2023 13:31 WG2096697 Volatile Organic Compounds (GC/MS) by Method 6200B-1997/6200B-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Acetone U 11.3 50.0 1 07/16/2023 19:56 WG2095840 Acrolein U 2.54 50.0 1 07/16/2023 19:56 WG2095840 Acrylonitrile U 0.671 10.0 1 07/16/2023 19:56 WG2095840 Benzene 0.0989 J 0.0941 1.00 1 07/16/2023 19:56 WG2095840 Bromobenzene U 0.118 1.00 1 07/16/2023 19:56 WG2095840 Bromodichloromethane U 0.136 1.00 1 07/16/2023 19:56 WG2095840 Bromoform U 0.129 1.00 1 07/16/2023 19:56 WG2095840 Bromomethane U 0.605 5.00 1 07/16/2023 19:56 WG2095840 n-Butylbenzene U 0.157 1.00 1 07/16/2023 19:56 WG2095840 sec-Butylbenzene U 0.125 1.00 1 07/16/2023 19:56 WG2095840 tert-Butylbenzene U 0.127 1.00 1 07/16/2023 19:56 WG2095840 Carbon tetrachloride U 0.128 1.00 1 07/16/2023 19:56 WG2095840 Chlorobenzene U 0.116 1.00 1 07/16/2023 19:56 WG2095840 Chlorodibromomethane U 0.140 1.00 1 07/16/2023 19:56 WG2095840 Chloroethane U 0.192 5.00 1 07/16/2023 19:56 WG2095840 Chloroform U 0.111 5.00 1 07/16/2023 19:56 WG2095840 Chloromethane U 0.960 2.50 1 07/16/2023 19:56 WG2095840 2-Chlorotoluene U 0.106 1.00 1 07/16/2023 19:56 WG2095840 4-Chlorotoluene U 0.114 1.00 1 07/16/2023 19:56 WG2095840 1,2-Dibromo-3-Chloropropane U 0.276 5.00 1 07/16/2023 19:56 WG2095840 1,2-Dibromoethane U 0.126 1.00 1 07/16/2023 19:56 WG2095840 Dibromomethane U 0.122 1.00 1 07/16/2023 19:56 WG2095840 1,2-Dichlorobenzene U 0.107 1.00 1 07/16/2023 19:56 WG2095840 1,3-Dichlorobenzene U 0.110 1.00 1 07/16/2023 19:56 WG2095840 1,4-Dichlorobenzene U 0.120 1.00 1 07/16/2023 19:56 WG2095840 Dichlorodifluoromethane U 0.374 5.00 1 07/16/2023 19:56 WG2095840 1,1-Dichloroethane U 0.100 1.00 1 07/16/2023 19:56 WG2095840 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:12 25 of 60 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:23 25 of 60 SAMPLE RESULTS - 10 L1635814 MW-1-20230713 Collected date/time: 07/13/23 10:45 Volatile Organic Compounds (GC/MS) by Method 6200B-1997/6200B-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time 1,2-Dichloroethane 0.159 J 0.0819 1.00 1 07/16/2023 19:56 WG2095840 1,1-Dichloroethene U 0.188 1.00 1 07/16/2023 19:56 WG2095840 cis-1,2-Dichloroethene U 0.126 1.00 1 07/16/2023 19:56 WG2095840 trans-1,2-Dichloroethene U 0.149 1.00 1 07/16/2023 19:56 WG2095840 1,2-Dichloropropane U 0.149 1.00 1 07/16/2023 19:56 WG2095840 1,1-Dichloropropene U 0.142 1.00 1 07/16/2023 19:56 WG2095840 1,3-Dichloropropane U 0.110 1.00 1 07/16/2023 19:56 WG2095840 2,2-Dichloropropane U 0.161 1.00 1 07/16/2023 19:56 WG2095840 Di-isopropyl ether U 0.105 1.00 1 07/16/2023 19:56 WG2095840 Ethylbenzene U 0.137 1.00 1 07/16/2023 19:56 WG2095840 Hexachloro-1,3-butadiene U 0.337 1.00 1 07/16/2023 19:56 WG2095840 Isopropylbenzene U 0.105 1.00 1 07/16/2023 19:56 WG2095840 p-Isopropyltoluene U 0.120 1.00 1 07/16/2023 19:56 WG2095840 2-Butanone (MEK)U 1.19 10.0 1 07/16/2023 19:56 WG2095840 Methylene Chloride U 0.430 5.00 1 07/16/2023 19:56 WG2095840 4-Methyl-2-pentanone (MIBK)U 0.478 10.0 1 07/16/2023 19:56 WG2095840 Methyl tert-butyl ether 0.532 J 0.101 1.00 1 07/16/2023 19:56 WG2095840 Naphthalene U 1.00 5.00 1 07/16/2023 19:56 WG2095840 n-Propylbenzene U 0.0993 1.00 1 07/16/2023 19:56 WG2095840 Styrene U 0.118 1.00 1 07/16/2023 19:56 WG2095840 1,1,1,2-Tetrachloroethane U 0.147 1.00 1 07/16/2023 19:56 WG2095840 1,1,2,2-Tetrachloroethane U 0.133 1.00 1 07/16/2023 19:56 WG2095840 Tetrachloroethene U 0.300 1.00 1 07/16/2023 19:56 WG2095840 Toluene U 0.278 1.00 1 07/16/2023 19:56 WG2095840 1,2,3-Trichlorobenzene U 0.230 1.00 1 07/16/2023 19:56 WG2095840 1,2,4-Trichlorobenzene U 0.481 1.00 1 07/16/2023 19:56 WG2095840 1,1,1-Trichloroethane U 0.149 1.00 1 07/16/2023 19:56 WG2095840 1,1,2-Trichloroethane U 0.158 1.00 1 07/16/2023 19:56 WG2095840 Trichloroethene U 0.190 1.00 1 07/16/2023 19:56 WG2095840 Trichlorofluoromethane U 0.160 5.00 1 07/16/2023 19:56 WG2095840 1,2,3-Trichloropropane U 0.237 2.50 1 07/16/2023 19:56 WG2095840 1,2,4-Trimethylbenzene U 0.322 1.00 1 07/16/2023 19:56 WG2095840 1,3,5-Trimethylbenzene U 0.104 1.00 1 07/16/2023 19:56 WG2095840 Vinyl chloride U 0.234 1.00 1 07/16/2023 19:56 WG2095840 o-Xylene U 0.174 1.00 1 07/16/2023 19:56 WG2095840 m&p-Xylenes U 0.430 2.00 1 07/16/2023 19:56 WG2095840 Xylenes, Total U 0.174 3.00 1 07/16/2023 19:56 WG2095840 ethanol U 42.0 100 1 07/21/2023 01:19 WG2096917 3,3-Dimethyl-1-butanol U 4.51 100 1 07/21/2023 01:19 WG2096917 Ethyl tert-butyl ether U 0.101 1.00 1 07/16/2023 19:56 WG2095840 t-Amyl Alcohol U 4.90 50.0 1 07/16/2023 19:56 WG2095840 tert-Butyl alcohol U 4.06 5.00 1 07/21/2023 01:19 WG2096917 tert-Butyl Formate U 4.51 20.0 1 07/16/2023 19:56 WG2095840 tert-Amyl Methyl Ether U 0.195 1.00 1 07/16/2023 19:56 WG2095840 (S) Toluene-d8 103 80.0-120 07/16/2023 19:56 WG2095840 (S) Toluene-d8 101 80.0-120 07/21/2023 01:19 WG2096917 (S) 4-Bromofluorobenzene 98.4 77.0-126 07/16/2023 19:56 WG2095840 (S) 4-Bromofluorobenzene 99.6 77.0-126 07/21/2023 01:19 WG2096917 (S) 1,2-Dichloroethane-d4 113 70.0-130 07/16/2023 19:56 WG2095840 (S) 1,2-Dichloroethane-d4 119 70.0-130 07/21/2023 01:19 WG2096917 EDB / DBCP by Method 8011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Ethylene Dibromide U 0.00552 0.0206 1.03 07/21/2023 18:49 WG2098245 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:12 26 of 60 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:23 26 of 60 SAMPLE RESULTS - 11 L1635814 MW-8-20230713 Collected date/time: 07/13/23 13:50 Wet Chemistry by Method 3500Fe B-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Ferrous Iron 6700 T8 150 500 10 07/16/2023 11:52 WG2095730 Wet Chemistry by Method 9056A Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Nitrate 55.8 J T8 48.0 100 1 07/21/2023 19:30 WG2099142 Sulfate 1260 J 594 5000 1 07/21/2023 19:30 WG2099142 Wet Chemistry by Method 9060A Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time TOC (Total Organic Carbon)208000 510 5000 1 07/27/2023 19:51 WG2100976 Metals (ICP) by Method 6010D Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Iron 3370 18.0 100 1 07/23/2023 13:52 WG2096554 Volatile Organic Compounds (GC) by Method RSK175 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Methane 173 2.91 10.0 1 07/18/2023 13:49 WG2096697 Volatile Organic Compounds (GC/MS) by Method 6200B-1997/6200B-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Acetone U 11300 50000 1000 07/16/2023 21:51 WG2095840 Acrolein U 2540 50000 1000 07/16/2023 21:51 WG2095840 Acrylonitrile U 671 10000 1000 07/16/2023 21:51 WG2095840 Benzene 24100 94.1 1000 1000 07/16/2023 21:51 WG2095840 Bromobenzene U 118 1000 1000 07/16/2023 21:51 WG2095840 Bromodichloromethane U 136 1000 1000 07/16/2023 21:51 WG2095840 Bromoform U 129 1000 1000 07/16/2023 21:51 WG2095840 Bromomethane U 605 5000 1000 07/16/2023 21:51 WG2095840 n-Butylbenzene U 157 1000 1000 07/16/2023 21:51 WG2095840 sec-Butylbenzene U 125 1000 1000 07/16/2023 21:51 WG2095840 tert-Butylbenzene U 127 1000 1000 07/16/2023 21:51 WG2095840 Carbon tetrachloride U 128 1000 1000 07/16/2023 21:51 WG2095840 Chlorobenzene U 116 1000 1000 07/16/2023 21:51 WG2095840 Chlorodibromomethane U 140 1000 1000 07/16/2023 21:51 WG2095840 Chloroethane U 192 5000 1000 07/16/2023 21:51 WG2095840 Chloroform U 111 5000 1000 07/16/2023 21:51 WG2095840 Chloromethane U 960 2500 1000 07/16/2023 21:51 WG2095840 2-Chlorotoluene U 106 1000 1000 07/16/2023 21:51 WG2095840 4-Chlorotoluene U 114 1000 1000 07/16/2023 21:51 WG2095840 1,2-Dibromo-3-Chloropropane U 276 5000 1000 07/16/2023 21:51 WG2095840 1,2-Dibromoethane 198 J 126 1000 1000 07/16/2023 21:51 WG2095840 Dibromomethane U 122 1000 1000 07/16/2023 21:51 WG2095840 1,2-Dichlorobenzene U 107 1000 1000 07/16/2023 21:51 WG2095840 1,3-Dichlorobenzene U 110 1000 1000 07/16/2023 21:51 WG2095840 1,4-Dichlorobenzene U 120 1000 1000 07/16/2023 21:51 WG2095840 Dichlorodifluoromethane U 374 5000 1000 07/16/2023 21:51 WG2095840 1,1-Dichloroethane U 100 1000 1000 07/16/2023 21:51 WG2095840 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:12 27 of 60 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:23 27 of 60 SAMPLE RESULTS - 11 L1635814 MW-8-20230713 Collected date/time: 07/13/23 13:50 Volatile Organic Compounds (GC/MS) by Method 6200B-1997/6200B-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time 1,2-Dichloroethane 985 J 81.9 1000 1000 07/16/2023 21:51 WG2095840 1,1-Dichloroethene U 188 1000 1000 07/16/2023 21:51 WG2095840 cis-1,2-Dichloroethene U 126 1000 1000 07/16/2023 21:51 WG2095840 trans-1,2-Dichloroethene U 149 1000 1000 07/16/2023 21:51 WG2095840 1,2-Dichloropropane U 149 1000 1000 07/16/2023 21:51 WG2095840 1,1-Dichloropropene U 142 1000 1000 07/16/2023 21:51 WG2095840 1,3-Dichloropropane U 110 1000 1000 07/16/2023 21:51 WG2095840 2,2-Dichloropropane U 161 1000 1000 07/16/2023 21:51 WG2095840 Di-isopropyl ether 276 J 105 1000 1000 07/16/2023 21:51 WG2095840 Ethylbenzene 2350 137 1000 1000 07/16/2023 21:51 WG2095840 Hexachloro-1,3-butadiene U 337 1000 1000 07/16/2023 21:51 WG2095840 Isopropylbenzene U 105 1000 1000 07/16/2023 21:51 WG2095840 p-Isopropyltoluene U 120 1000 1000 07/16/2023 21:51 WG2095840 2-Butanone (MEK)6240 J 1190 10000 1000 07/16/2023 21:51 WG2095840 Methylene Chloride U 430 5000 1000 07/16/2023 21:51 WG2095840 4-Methyl-2-pentanone (MIBK)U 478 10000 1000 07/16/2023 21:51 WG2095840 Methyl tert-butyl ether 79700 101 1000 1000 07/16/2023 21:51 WG2095840 Naphthalene U 1000 5000 1000 07/16/2023 21:51 WG2095840 n-Propylbenzene 184 J 99.3 1000 1000 07/16/2023 21:51 WG2095840 Styrene U 118 1000 1000 07/16/2023 21:51 WG2095840 1,1,1,2-Tetrachloroethane U 147 1000 1000 07/16/2023 21:51 WG2095840 1,1,2,2-Tetrachloroethane U 133 1000 1000 07/16/2023 21:51 WG2095840 Tetrachloroethene U 300 1000 1000 07/16/2023 21:51 WG2095840 Toluene 20300 278 1000 1000 07/16/2023 21:51 WG2095840 1,2,3-Trichlorobenzene U 230 1000 1000 07/16/2023 21:51 WG2095840 1,2,4-Trichlorobenzene U 481 1000 1000 07/16/2023 21:51 WG2095840 1,1,1-Trichloroethane U 149 1000 1000 07/16/2023 21:51 WG2095840 1,1,2-Trichloroethane U 158 1000 1000 07/16/2023 21:51 WG2095840 Trichloroethene U 190 1000 1000 07/16/2023 21:51 WG2095840 Trichlorofluoromethane U 160 5000 1000 07/16/2023 21:51 WG2095840 1,2,3-Trichloropropane U 237 2500 1000 07/16/2023 21:51 WG2095840 1,2,4-Trimethylbenzene 1320 322 1000 1000 07/16/2023 21:51 WG2095840 1,3,5-Trimethylbenzene 278 J 104 1000 1000 07/16/2023 21:51 WG2095840 Vinyl chloride U 234 1000 1000 07/16/2023 21:51 WG2095840 o-Xylene 3780 174 1000 1000 07/16/2023 21:51 WG2095840 m&p-Xylenes 7830 430 2000 1000 07/16/2023 21:51 WG2095840 Xylenes, Total 11600 174 3000 1000 07/16/2023 21:51 WG2095840 ethanol U 42000 100000 1000 07/21/2023 04:23 WG2096917 3,3-Dimethyl-1-butanol U 4510 100000 1000 07/21/2023 04:23 WG2096917 Ethyl tert-butyl ether U 101 1000 1000 07/16/2023 21:51 WG2095840 t-Amyl Alcohol 107000 4900 50000 1000 07/16/2023 21:51 WG2095840 tert-Butyl alcohol 45400 4060 5000 1000 07/21/2023 04:23 WG2096917 tert-Butyl Formate U 4510 20000 1000 07/16/2023 21:51 WG2095840 tert-Amyl Methyl Ether 289 J 195 1000 1000 07/16/2023 21:51 WG2095840 (S) Toluene-d8 104 80.0-120 07/16/2023 21:51 WG2095840 (S) Toluene-d8 100 80.0-120 07/21/2023 04:23 WG2096917 (S) 4-Bromofluorobenzene 98.6 77.0-126 07/16/2023 21:51 WG2095840 (S) 4-Bromofluorobenzene 102 77.0-126 07/21/2023 04:23 WG2096917 (S) 1,2-Dichloroethane-d4 110 70.0-130 07/16/2023 21:51 WG2095840 (S) 1,2-Dichloroethane-d4 117 70.0-130 07/21/2023 04:23 WG2096917 EDB / DBCP by Method 8011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Ethylene Dibromide 203 5.90 22.0 1100 07/24/2023 15:47 WG2098245 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:12 28 of 60 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:23 28 of 60 SAMPLE RESULTS - 12 L1635814 MW-9-20230713 Collected date/time: 07/13/23 16:15 Wet Chemistry by Method 3500Fe B-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Ferrous Iron 8260 T8 150 500 10 07/16/2023 11:52 WG2095730 Wet Chemistry by Method 9056A Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Nitrate 3760 48.0 100 1 07/15/2023 14:53 WG2095435 Sulfate 2880 J 594 5000 1 07/15/2023 14:53 WG2095435 Wet Chemistry by Method 9060A Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time TOC (Total Organic Carbon)18500 102 1000 1 07/26/2023 16:01 WG2100982 Metals (ICP) by Method 6010D Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Iron 7410 18.0 100 1 07/23/2023 13:55 WG2096554 Volatile Organic Compounds (GC) by Method RSK175 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Methane 92.6 2.91 10.0 1 07/18/2023 13:54 WG2096697 Volatile Organic Compounds (GC/MS) by Method 6200B-1997/6200B-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Acetone U 2260 10000 200 07/16/2023 22:10 WG2095840 Acrolein U 508 10000 200 07/16/2023 22:10 WG2095840 Acrylonitrile U 134 2000 200 07/16/2023 22:10 WG2095840 Benzene 2370 18.8 200 200 07/16/2023 22:10 WG2095840 Bromobenzene U 23.6 200 200 07/16/2023 22:10 WG2095840 Bromodichloromethane U 27.2 200 200 07/16/2023 22:10 WG2095840 Bromoform U 25.8 200 200 07/16/2023 22:10 WG2095840 Bromomethane U 121 1000 200 07/16/2023 22:10 WG2095840 n-Butylbenzene U 31.4 200 200 07/16/2023 22:10 WG2095840 sec-Butylbenzene U 25.0 200 200 07/16/2023 22:10 WG2095840 tert-Butylbenzene U 25.4 200 200 07/16/2023 22:10 WG2095840 Carbon tetrachloride U 25.6 200 200 07/16/2023 22:10 WG2095840 Chlorobenzene U 23.2 200 200 07/16/2023 22:10 WG2095840 Chlorodibromomethane U 28.0 200 200 07/16/2023 22:10 WG2095840 Chloroethane U 38.4 1000 200 07/16/2023 22:10 WG2095840 Chloroform U 22.2 1000 200 07/16/2023 22:10 WG2095840 Chloromethane U 192 500 200 07/16/2023 22:10 WG2095840 2-Chlorotoluene U 21.2 200 200 07/16/2023 22:10 WG2095840 4-Chlorotoluene U 22.8 200 200 07/16/2023 22:10 WG2095840 1,2-Dibromo-3-Chloropropane U 55.2 1000 200 07/16/2023 22:10 WG2095840 1,2-Dibromoethane U 25.2 200 200 07/16/2023 22:10 WG2095840 Dibromomethane U 24.4 200 200 07/16/2023 22:10 WG2095840 1,2-Dichlorobenzene U 21.4 200 200 07/16/2023 22:10 WG2095840 1,3-Dichlorobenzene U 22.0 200 200 07/16/2023 22:10 WG2095840 1,4-Dichlorobenzene U 24.0 200 200 07/16/2023 22:10 WG2095840 Dichlorodifluoromethane U 74.8 1000 200 07/16/2023 22:10 WG2095840 1,1-Dichloroethane U 20.0 200 200 07/16/2023 22:10 WG2095840 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:12 29 of 60 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:23 29 of 60 SAMPLE RESULTS - 12 L1635814 MW-9-20230713 Collected date/time: 07/13/23 16:15 Volatile Organic Compounds (GC/MS) by Method 6200B-1997/6200B-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time 1,2-Dichloroethane 24.3 J 16.4 200 200 07/16/2023 22:10 WG2095840 1,1-Dichloroethene U 37.6 200 200 07/16/2023 22:10 WG2095840 cis-1,2-Dichloroethene U 25.2 200 200 07/16/2023 22:10 WG2095840 trans-1,2-Dichloroethene U 29.8 200 200 07/16/2023 22:10 WG2095840 1,2-Dichloropropane U 29.8 200 200 07/16/2023 22:10 WG2095840 1,1-Dichloropropene U 28.4 200 200 07/16/2023 22:10 WG2095840 1,3-Dichloropropane U 22.0 200 200 07/16/2023 22:10 WG2095840 2,2-Dichloropropane U 32.2 200 200 07/16/2023 22:10 WG2095840 Di-isopropyl ether U 21.0 200 200 07/16/2023 22:10 WG2095840 Ethylbenzene 542 27.4 200 200 07/16/2023 22:10 WG2095840 Hexachloro-1,3-butadiene U 67.4 200 200 07/16/2023 22:10 WG2095840 Isopropylbenzene 28.9 J 21.0 200 200 07/16/2023 22:10 WG2095840 p-Isopropyltoluene U 24.0 200 200 07/16/2023 22:10 WG2095840 2-Butanone (MEK)U 238 2000 200 07/16/2023 22:10 WG2095840 Methylene Chloride U 86.0 1000 200 07/16/2023 22:10 WG2095840 4-Methyl-2-pentanone (MIBK)U 95.6 2000 200 07/16/2023 22:10 WG2095840 Methyl tert-butyl ether 3970 20.2 200 200 07/16/2023 22:10 WG2095840 Naphthalene U 200 1000 200 07/16/2023 22:10 WG2095840 n-Propylbenzene 61.9 J 19.9 200 200 07/16/2023 22:10 WG2095840 Styrene U 23.6 200 200 07/16/2023 22:10 WG2095840 1,1,1,2-Tetrachloroethane U 29.4 200 200 07/16/2023 22:10 WG2095840 1,1,2,2-Tetrachloroethane U 26.6 200 200 07/16/2023 22:10 WG2095840 Tetrachloroethene U 60.0 200 200 07/16/2023 22:10 WG2095840 Toluene U 55.6 200 200 07/16/2023 22:10 WG2095840 1,2,3-Trichlorobenzene U 46.0 200 200 07/16/2023 22:10 WG2095840 1,2,4-Trichlorobenzene U 96.2 200 200 07/16/2023 22:10 WG2095840 1,1,1-Trichloroethane U 29.8 200 200 07/16/2023 22:10 WG2095840 1,1,2-Trichloroethane U 31.6 200 200 07/16/2023 22:10 WG2095840 Trichloroethene U 38.0 200 200 07/16/2023 22:10 WG2095840 Trichlorofluoromethane U 32.0 1000 200 07/16/2023 22:10 WG2095840 1,2,3-Trichloropropane U 47.4 500 200 07/16/2023 22:10 WG2095840 1,2,4-Trimethylbenzene U 64.4 200 200 07/16/2023 22:10 WG2095840 1,3,5-Trimethylbenzene U 20.8 200 200 07/16/2023 22:10 WG2095840 Vinyl chloride U 46.8 200 200 07/16/2023 22:10 WG2095840 o-Xylene U 34.8 200 200 07/16/2023 22:10 WG2095840 m&p-Xylenes U 86.0 400 200 07/16/2023 22:10 WG2095840 Xylenes, Total U 34.8 600 200 07/16/2023 22:10 WG2095840 ethanol U 8400 20000 200 07/21/2023 04:44 WG2096917 3,3-Dimethyl-1-butanol U 902 20000 200 07/21/2023 04:44 WG2096917 Ethyl tert-butyl ether U 20.2 200 200 07/16/2023 22:10 WG2095840 t-Amyl Alcohol 1170 J 980 10000 200 07/16/2023 22:10 WG2095840 tert-Butyl alcohol 1000 J 812 1000 200 07/21/2023 04:44 WG2096917 tert-Butyl Formate U 902 4000 200 07/16/2023 22:10 WG2095840 tert-Amyl Methyl Ether U 39.0 200 200 07/16/2023 22:10 WG2095840 (S) Toluene-d8 103 80.0-120 07/16/2023 22:10 WG2095840 (S) Toluene-d8 99.5 80.0-120 07/21/2023 04:44 WG2096917 (S) 4-Bromofluorobenzene 97.2 77.0-126 07/16/2023 22:10 WG2095840 (S) 4-Bromofluorobenzene 98.8 77.0-126 07/21/2023 04:44 WG2096917 (S) 1,2-Dichloroethane-d4 111 70.0-130 07/16/2023 22:10 WG2095840 (S) 1,2-Dichloroethane-d4 116 70.0-130 07/21/2023 04:44 WG2096917 EDB / DBCP by Method 8011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Ethylene Dibromide 0.0216 0.00536 0.0200 1 07/24/2023 13:16 WG2098245 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:12 30 of 60 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:23 30 of 60 SAMPLE RESULTS - 13 L1635814 MW-4D-20230713 Collected date/time: 07/13/23 17:50 Wet Chemistry by Method 3500Fe B-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Ferrous Iron 88.0 T8 15.0 50.0 1 07/16/2023 11:54 WG2095730 Wet Chemistry by Method 9056A Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Nitrate 3070 48.0 100 1 07/15/2023 15:08 WG2095435 Sulfate 10600 594 5000 1 07/15/2023 15:08 WG2095435 Wet Chemistry by Method 9060A Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time TOC (Total Organic Carbon)873 B J 102 1000 1 07/26/2023 16:14 WG2100982 Metals (ICP) by Method 6010D Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Iron 10700 18.0 100 1 07/23/2023 13:58 WG2096554 Volatile Organic Compounds (GC) by Method RSK175 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Methane U 2.91 10.0 1 07/19/2023 10:41 WG2097489 Volatile Organic Compounds (GC/MS) by Method 6200B-1997/6200B-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Acetone U 11.3 50.0 1 07/16/2023 20:16 WG2095840 Acrolein U 2.54 50.0 1 07/16/2023 20:16 WG2095840 Acrylonitrile U 0.671 10.0 1 07/16/2023 20:16 WG2095840 Benzene 0.423 J 0.0941 1.00 1 07/16/2023 20:16 WG2095840 Bromobenzene U 0.118 1.00 1 07/16/2023 20:16 WG2095840 Bromodichloromethane U 0.136 1.00 1 07/16/2023 20:16 WG2095840 Bromoform U 0.129 1.00 1 07/16/2023 20:16 WG2095840 Bromomethane U 0.605 5.00 1 07/16/2023 20:16 WG2095840 n-Butylbenzene U 0.157 1.00 1 07/16/2023 20:16 WG2095840 sec-Butylbenzene U 0.125 1.00 1 07/16/2023 20:16 WG2095840 tert-Butylbenzene U 0.127 1.00 1 07/16/2023 20:16 WG2095840 Carbon tetrachloride U 0.128 1.00 1 07/16/2023 20:16 WG2095840 Chlorobenzene U 0.116 1.00 1 07/16/2023 20:16 WG2095840 Chlorodibromomethane U 0.140 1.00 1 07/16/2023 20:16 WG2095840 Chloroethane U 0.192 5.00 1 07/16/2023 20:16 WG2095840 Chloroform 0.836 J 0.111 5.00 1 07/16/2023 20:16 WG2095840 Chloromethane U 0.960 2.50 1 07/16/2023 20:16 WG2095840 2-Chlorotoluene U 0.106 1.00 1 07/16/2023 20:16 WG2095840 4-Chlorotoluene U 0.114 1.00 1 07/16/2023 20:16 WG2095840 1,2-Dibromo-3-Chloropropane U 0.276 5.00 1 07/16/2023 20:16 WG2095840 1,2-Dibromoethane U 0.126 1.00 1 07/16/2023 20:16 WG2095840 Dibromomethane U 0.122 1.00 1 07/16/2023 20:16 WG2095840 1,2-Dichlorobenzene U 0.107 1.00 1 07/16/2023 20:16 WG2095840 1,3-Dichlorobenzene U 0.110 1.00 1 07/16/2023 20:16 WG2095840 1,4-Dichlorobenzene U 0.120 1.00 1 07/16/2023 20:16 WG2095840 Dichlorodifluoromethane U 0.374 5.00 1 07/16/2023 20:16 WG2095840 1,1-Dichloroethane U 0.100 1.00 1 07/16/2023 20:16 WG2095840 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:12 31 of 60 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:23 31 of 60 SAMPLE RESULTS - 13 L1635814 MW-4D-20230713 Collected date/time: 07/13/23 17:50 Volatile Organic Compounds (GC/MS) by Method 6200B-1997/6200B-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time 1,2-Dichloroethane 0.473 J 0.0819 1.00 1 07/16/2023 20:16 WG2095840 1,1-Dichloroethene U 0.188 1.00 1 07/16/2023 20:16 WG2095840 cis-1,2-Dichloroethene U 0.126 1.00 1 07/16/2023 20:16 WG2095840 trans-1,2-Dichloroethene U 0.149 1.00 1 07/16/2023 20:16 WG2095840 1,2-Dichloropropane U 0.149 1.00 1 07/16/2023 20:16 WG2095840 1,1-Dichloropropene U 0.142 1.00 1 07/16/2023 20:16 WG2095840 1,3-Dichloropropane U 0.110 1.00 1 07/16/2023 20:16 WG2095840 2,2-Dichloropropane U 0.161 1.00 1 07/16/2023 20:16 WG2095840 Di-isopropyl ether 0.682 J 0.105 1.00 1 07/16/2023 20:16 WG2095840 Ethylbenzene 0.163 J 0.137 1.00 1 07/16/2023 20:16 WG2095840 Hexachloro-1,3-butadiene U 0.337 1.00 1 07/16/2023 20:16 WG2095840 Isopropylbenzene U 0.105 1.00 1 07/16/2023 20:16 WG2095840 p-Isopropyltoluene U 0.120 1.00 1 07/16/2023 20:16 WG2095840 2-Butanone (MEK)U 1.19 10.0 1 07/16/2023 20:16 WG2095840 Methylene Chloride U 0.430 5.00 1 07/16/2023 20:16 WG2095840 4-Methyl-2-pentanone (MIBK)U 0.478 10.0 1 07/16/2023 20:16 WG2095840 Methyl tert-butyl ether 6.08 0.101 1.00 1 07/16/2023 20:16 WG2095840 Naphthalene U 1.00 5.00 1 07/16/2023 20:16 WG2095840 n-Propylbenzene U 0.0993 1.00 1 07/16/2023 20:16 WG2095840 Styrene U 0.118 1.00 1 07/16/2023 20:16 WG2095840 1,1,1,2-Tetrachloroethane U 0.147 1.00 1 07/16/2023 20:16 WG2095840 1,1,2,2-Tetrachloroethane U 0.133 1.00 1 07/16/2023 20:16 WG2095840 Tetrachloroethene U 0.300 1.00 1 07/16/2023 20:16 WG2095840 Toluene 0.528 J 0.278 1.00 1 07/16/2023 20:16 WG2095840 1,2,3-Trichlorobenzene U 0.230 1.00 1 07/16/2023 20:16 WG2095840 1,2,4-Trichlorobenzene U 0.481 1.00 1 07/16/2023 20:16 WG2095840 1,1,1-Trichloroethane U 0.149 1.00 1 07/16/2023 20:16 WG2095840 1,1,2-Trichloroethane U 0.158 1.00 1 07/16/2023 20:16 WG2095840 Trichloroethene U 0.190 1.00 1 07/16/2023 20:16 WG2095840 Trichlorofluoromethane 0.479 J 0.160 5.00 1 07/16/2023 20:16 WG2095840 1,2,3-Trichloropropane U 0.237 2.50 1 07/16/2023 20:16 WG2095840 1,2,4-Trimethylbenzene U 0.322 1.00 1 07/16/2023 20:16 WG2095840 1,3,5-Trimethylbenzene U 0.104 1.00 1 07/16/2023 20:16 WG2095840 Vinyl chloride U 0.234 1.00 1 07/16/2023 20:16 WG2095840 o-Xylene U 0.174 1.00 1 07/16/2023 20:16 WG2095840 m&p-Xylenes U 0.430 2.00 1 07/16/2023 20:16 WG2095840 Xylenes, Total U 0.174 3.00 1 07/16/2023 20:16 WG2095840 ethanol U 42.0 100 1 07/21/2023 01:40 WG2096917 3,3-Dimethyl-1-butanol U 4.51 100 1 07/21/2023 01:40 WG2096917 Ethyl tert-butyl ether U 0.101 1.00 1 07/16/2023 20:16 WG2095840 t-Amyl Alcohol U 4.90 50.0 1 07/16/2023 20:16 WG2095840 tert-Butyl alcohol U 4.06 5.00 1 07/21/2023 01:40 WG2096917 tert-Butyl Formate U 4.51 20.0 1 07/16/2023 20:16 WG2095840 tert-Amyl Methyl Ether U 0.195 1.00 1 07/16/2023 20:16 WG2095840 (S) Toluene-d8 102 80.0-120 07/16/2023 20:16 WG2095840 (S) Toluene-d8 101 80.0-120 07/21/2023 01:40 WG2096917 (S) 4-Bromofluorobenzene 94.8 77.0-126 07/16/2023 20:16 WG2095840 (S) 4-Bromofluorobenzene 98.1 77.0-126 07/21/2023 01:40 WG2096917 (S) 1,2-Dichloroethane-d4 112 70.0-130 07/16/2023 20:16 WG2095840 (S) 1,2-Dichloroethane-d4 117 70.0-130 07/21/2023 01:40 WG2096917 EDB / DBCP by Method 8011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Ethylene Dibromide U 0.00536 0.0200 1 07/21/2023 19:27 WG2098245 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:12 32 of 60 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Arcadis - Chevron - NC 30064349 L1635814 07/28/23 19:23 32 of 60 Arcadis. 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