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HomeMy WebLinkAboutWS-3571_3571_CA_RMR_20250220AECOM Technical Services – North Carolina 919-461-1100 phone 5438 Wade Park Boulevard, Suite 200 919-461-1415 fax Raleigh, North Carolina 27607 February 20, 2025 Gene Mao, PG Guilford County Department of Public Health Environmental Health Division 400 West Market Street, Suite 300 Greensboro, North Carolina 27401 Subject: Semiannual Report July – December 2024 Products (SE) Pipe Line Corporation – Guilford Greene Site 2617 Quaker Landing Road Greensboro, Guilford County, North Carolina 27455 Incident No. 3571 AECOM Project Number 60746743 Dear Mr. Mao: On behalf of Products (SE) Pipe Line Corporation (PPL), AECOM Technical Services – North Carolina (AECOM) is submitting one copy of the referenced report for your information. The report documents the operation and maintenance of the AS/SVE system, LNAPL gauging, soil gas sampling, SVE influent/effluent sampling, and groundwater monitoring activities completed between July and December of 2024 at the PPL Guilford Greene Site. If you have any questions or require additional information, please contact Brandt Morrow at 704-907-1354 or brandt.morrow@aecom.com or Angela Scott at 770-751-4252. Sincerely, AECOM Brandt Morrow, PG Project Manager cc:Angela Scott, Kinder Morgan Jimmy Stamey, Kinder Morgan AECOM Project File AECOM Table of Contents Semiannual Report July – December 2024 i Semiannual Report July – December 2024 Guilford Greene Site 2617 Quaker Landing Road Greensboro, Guilford County, North Carolina 27455 NCDEQ Incident Number: 3571 NCDEQ Risk Classification: Intermediate Prepared by: AECOM 5438 Wade Park Boulevard, Suite 200 Raleigh, North Carolina 27607 AECOM Project Number Date: February 20, 2025 AECOM Table of Contents Semiannual Report July – December 2024 ii Table of Contents 1.0 Introduction ........................................................................................................... 1 2.0 General Information .............................................................................................. 2 2.1 Site Location .................................................................................................. 2 2.2 Site Characteristics ........................................................................................ 2 2.2.1 Historical Release Information and Risk Classification ...................... 2 2.2.2 Land Use........................................................................................... 2 2.2.3 Remedial History ............................................................................... 2 2.2.4 Site Geology and Hydrogeology ........................................................ 3 3.0 System Operation ................................................................................................. 4 4.0 Groundwater and LNAPL Monitoring Procedures .............................................. 5 4.1 Groundwater and LNAPL Gauging ................................................................. 5 4.2 Groundwater Sampling................................................................................... 5 5.0 Groundwater Results ............................................................................................ 6 5.1 Groundwater and LNAPL Elevation ................................................................ 6 5.2 Groundwater Analytical .................................................................................. 6 6.0 Soil Gas Monitoring and Results ......................................................................... 8 7.0 Quality Control Measures..................................................................................... 9 8.0 Summary ............................................................................................................. 10 9.0 References .......................................................................................................... 11 List of Tables Table 1 Well Construction Details Table 2A Air Sparge Performance Summary Table 2B Soil Vapor Extraction Performance Summary Table 3 SVE Analytical Results Table 4 Historical Groundwater Elevation Data Table 5 LNAPL Gauging Data Table 6 Groundwater Quality Field Data Table 7 Historical Groundwater Analytical Results Table 8 Soil Gas Analytical Results List of Figures Figure 1 Site Location Map AECOM Table of Contents Semiannual Report July – December 2024 iii Figure 2 Site Map Figure 3 AS/SVE System Layout Map Figure 4 Groundwater Contour Map, October 15, 2024 Figure 5A Benzene Results, October 15-16, 2024 Figure 5B Toluene Results, October 15-16, 2024 Figure 5C Ethylbenzene Results, October 15-16, 2024 Figure 5D Xylenes Results, October 15-16, 2024 Figure 5E MTBE Results, October 15-16, 2024 List of Appendices Appendix A Laboratory Analytical Reports – SVE Influent/Effluent Air Appendix B Laboratory Analytical Report – Groundwater Appendix C Laboratory Analytical Reports – Soil Gas This report was prepared under my direct and responsible charge. Based on my inquiry of the persons responsible for gathering the information, the information submitted is, to the best of my knowledge, true, accurate, and complete. Brandt Morrow, Licensed Geologist AECOM Technical Services – North Carolina NC Geologist License Number Date AECOM Introduction Semiannual Report July – December 2024 1 1.0 Introduction AECOM Technical Services – North Carolina (AECOM) is pleased to submit this 2024 Semiannual Report to the Guilford County Department of Public Health (GCDPH) on behalf of Products (SE) Pipe Line Corporation (PPL). This report describes activities conducted between July and December of 2024 associated with a former pipeline release located at 2617 Quaker Landing Road in Greensboro, North Carolina (Site). The following activities were completed in accordance with the Corrective Action Modification/New Technology Plan (CAP Mod) approved by the North Carolina Department of Environmental Quality (NCDEQ) on June 22, 2020: Biweekly system operation and maintenance Monthly light non-aqueous phase liquid (LNAPL) gauging Semiannual groundwater sampling Quarterly soil gas sampling AECOM General Information Semiannual Report July – December 2024 2 2.0 General Information This section presents Site location and characteristics. 2.1 Site Location The Site is located along a shared (Colonial Pipeline Company [CPC] and PPL) pipeline right-of-way at approximately 36° 8’ 48.3’’ latitude and -79° 51’ 2.7’’ longitude at the property address of 2617 Quaker Landing Road in Greensboro, Guilford County, North Carolina. The Site location is depicted on the Lake Brandt Topographic Quadrangle as shown on Figure 1. 2.2 Site Characteristics This section describes the historical release, land use, remedial history, and Site geology and hydrogeology. 2.2.1 Historical Release Information and Risk Classification The released product was identified as gasoline and diesel. NCDEQ assigned an incident number (3571) to the Site and risk classification of “intermediate” due to the proximity of Lake Brandt and the presence of LNAPL in Site monitoring wells. 2.2.2 Land Use The Site is located in a residential portion of Guilford County. The Site is situated on a single parcel (Number 89076) owned by PPL and is approximately 1.85 acres in size. The Site is located within a residential neighborhood and is bounded by a wooded area and greenway to the northwest and by private residential properties to the northeast, southeast, and southwest. The Site has a surface elevation of approximately 800 feet above mean sea level based on the topographic map. The land surface at the Site slopes moderately to the west (towards Lake Brandt) and steeply to the north (towards the stormwater channel). 2.2.3 Remedial History A release of gasoline and diesel fuel was discovered on January 1, 1988, at the Site. Approximately 17,000 gallons of gasoline and diesel fuel were released into the surrounding area. The cause was determined to be a 7/8-inch long by 1/16-inch wide split along the 8-inch underground pipeline. Site remediation began immediately after the discovery of the release. Initial response efforts recovered approximately 6,000 gallons of LNAPL. In 1988, a pump-and-treat (P&T) system was installed and operated using eight recovery wells. Seventeen additional recovery wells, two soil vapor extraction (SVE) wells, and nineteen dual-phase wells were installed and operated in subsequent years. In 1992, a catalytic oxidizer unit was installed to control volatile organic compound (VOC) emissions. In 1997, an air sparge (AS) system was installed along with twenty- five AS wells and twenty-two groundwater monitoring wells. The AS and SVE systems were turned off in 2000. The P&T system began seasonal operation (March-November) in 2001 and then reverted to year-round operation in 2012. A vapor effluent carbon vessel was added to the P&T system in 2011. In September 2018, the P&T system was shutdown to monitor groundwater conditions and evaluate alternative remedial options AECOM General Information Semiannual Report July – December 2024 3 for the Site. The P&T system, including all associated wells, was removed in 2020. Subsequently, in 2020, construction for a new AS/SVE system was substantially completed at the Site in accordance with the NCDEQ-approved CAP Mod; the SVE system was started in May 2021, and the AS system was started in June 2021. Currently, thirty-one wells used for monitoring (of which five are historical AS wells), fifteen wells used for SVE, and twenty-eight wells used for AS are present at the Site. The Site layout is depicted on Figure 2 and the AS/SVE layout is depicted on Figure 3. Well-construction details including date of installation, top-of-casing elevation, total depth, and screen interval can be found in Table 1. 2.2.4 Site Geology and Hydrogeology Soil at the Site is classified as the Madison Series per the Guilford County Geographical Information System (GIS) website. During previous investigations, soil encountered at the Site was predominantly classified as reddish-brown silty clay. Soil deeper than approximately fifteen feet below ground surface (bgs) was described as saprolite. The Site is located in the Piedmont physiographic province and is characterized by moderately level interstream areas separated by broad valleys. Bedrock at the Site is mapped within the Charlotte and Milton Belts. Bedrock is described as an intrusive granitic rock (Lilesville Granite) of the Pennsylvanian-Permian age, characterized as megacrystic to equigranular. During previous investigations, bedrock was encountered at the Site between 55 to 70 feet bgs. In December 2020, during the installation of deep monitoring well (DW1) completed to 112 feet bgs, the change from saprolite to highly weathered bedrock occurred between 61 to 65 feet bgs and from highly weathered bedrock to partially weathered bedrock between 65 to 80 feet bgs. Competent bedrock was encountered at 80 feet bgs and was able to be cored. The bedrock was characterized as diorite to granodiorite and diabase. From the twenty-five feet of cored rock, the recovery ranged from 84 to 100%, and the rock quality designation ranged from 82 to 100%. Four high-angle fractures were observed in the cores collected. Based on historical data, the groundwater table at the Site, under static conditions, typically ranges from 29 to 51 feet bgs, and groundwater typically flows to the northwest. AECOM System Operation Semiannual Report July – December 2024 4 3.0 System Operation The SVE system wells were started on May 6, 2021. Based on location, the AS system wells were selectively started between June 2, 2021, and November 18, 2021. From June 21, 2024, to December 20, 2024, the AS system runtime was approximately 95.0%, and the SVE system runtime was approximately 100%. The entirety of the system downtime was planned and scheduled prior to and during the semiannual groundwater sampling. Summaries of AS/SVE system operational data are presented in Tables 2A and 2B, respectively. The tables present system run times (based on air compressor and blower run hours) and descriptions of any significant activities or issues encountered during each O&M event. Influent and effluent vapor concentrations were monitored and sampled on a monthly basis. Real-time measurements were collected with a photoionization detector (PID). Samples were collected in summa canisters provided by the laboratory and shipped under chain of custody to Eurofins Environment Testing (Eurofins) in Knoxville, Tennessee. The samples were analyzed for total VOCs (as octane), benzene, toluene, ethylbenzene, total xylenes (BTEX), methyl tert-butyl ether (MTBE), and naphthalene by the Method TO-15. Analytical results and calculated volume/mass removed are presented in Table 3. The laboratory reports are included in Appendix A. During the reporting period, approximately 1,137 pounds of VOCs (as octane) were removed by the SVE system. Cumulatively, the SVE system has removed approximately 24,298 pounds of VOCs since startup in May 2021. Periodically, condensate from SVE wells and conveyance lines will accumulate in a sufficient amount requiring discharge to the sanitary sewer. Prior to discharge, water sampling must be conducted to meet the requirements set forth in the Special Discharge Permit No. S2011 for the Site. Monthly results were reported to the city of Greensboro on a quarterly basis. During the reporting period, one sampling event was conducted in December. All analytical results complied with the limits outlined in Permit No. S2011. AECOM Groundwater and LNAPL Monitoring Procedures Semiannual Report July – December 2024 5 4.0 Groundwater and LNAPL Monitoring Procedures This section describes the groundwater monitoring procedures. 4.1 Groundwater and LNAPL Gauging A comprehensive gauging event was conducted on October 15, 2024, prior to the groundwater sampling event. Throughout the reporting period, Site monitoring wells near the source area (2W6, 2W25, 2W26, and 2W27) were gauged every month for the presence of LNAPL. Prior to the October groundwater monitoring event the AS system was shut down in order to collect groundwater elevations under static conditions. Prior to gauging, wells were opened and allowed sufficient time to equilibrate to atmospheric conditions. Subsequently, depth-to-groundwater and depth-to-LNAPL measurements were collected from Site wells using an oil-water interface probe. 4.2 Groundwater Sampling Groundwater sampling activities were completed on October 15-16, 2024, in general accordance with the CAP Mod. Samples were collected from the following wells: 2W1, 2W3, 2W4, 2W6, 2W7, 2W11, 2W13, 2W14, 2W18, 2W22, 2W23, 2W25, 2W27, 2W28, 2W29, 2W30, 2W31, DW1, AS1, AS9, and AS10. Wells were purged using new bottom-loading disposable polyethylene bailers. Purging continued until a minimum of three well volumes were extracted or until the well was purged dry. If a well was purged dry, adequate time was allowed for the groundwater to recover prior to collecting a sample. Each well was subsequently sampled via the same bailer used for purging. Per NCDEQ UST Guidelines, purge water was discharged onto the ground in proximity to the well in a manner that precluded runoff. Samples were collected into laboratory-supplied containers, labeled, and promptly placed on ice in a cooler with a trip blank and a temperature blank. Groundwater samples were shipped under chain of custody via overnight delivery to SGS North America, Inc. in Orlando, Florida for analysis of BTEX and MTBE by USEPA Method 8260D. AECOM Groundwater Results Semiannual Report July – December 2024 6 5.0 Groundwater Results This section presents the October 2024 groundwater results. 5.1 Groundwater and LNAPL Elevation For the October 2024 event, the following observations were made: The overall groundwater flow beneath the Site is to the northwest with an approximate groundwater gradient of 0.034 feet/foot (between 2W1 and 2W3), both of which are consistent with historical interpretations. Groundwater elevations for the October 2024 groundwater sampling event are shown in Table 4 along with historical groundwater elevations. A groundwater contour map was created for the October 2024 groundwater sampling event and is presented on Figure 4. LNAPL gauging data, collected on a monthly basis during the reporting period can be found in Table 5. LNAPL was not detected in any Site monitoring well throughout the reporting period. 5.2 Groundwater Analytical Field measurement data, including temperature, pH, dissolved oxygen, oxidation- reduction potential, and specific conductance, were collected ex-situ after sampling via a calibrated Hanna Instruments® HI-98194 water quality meter. Field measurement data for the October 2024 groundwater sampling event are summarized in Table 6. Analytical results are presented in Table 7, along with historical data. For the October 2024 event, the following summary was made: Monitoring wells 2W25, 2W29, AS1, and AS10 exceeded the NCDEQ 2L Standard for benzene. Monitoring wells 2W4, 2W27, 2W29, 2W31, and AS10 exceeded the NCDEQ 2L Standard for MTBE. Monitoring wells 2W6, 2W25, and 2W29 exceeded the NCDEQ 2L Standard for total xylenes. Monitoring wells 2W25 and 2W29 exceeded the NCDEQ 2L Standards for toluene. No sampled monitoring wells exceeded the NCDEQ 2L Standard for ethylbenzene. Over the period of record, well concentrations exhibit a decreasing trend or remain stable. In November 2021 concentration trends in monitoring wells 2W4 and 2W7 began to exhibit increasing trends. Concentrations in monitoring wells 2W24 and 2W7 have returned to below applicable NCDEQ 2L Standards in recent sampling events apart from MTBE in 2W4, which remains elevated. Benzene and toluene concentrations in monitoring well 2W25 were the highest over the period of record during the October 2024 sampling event. Although trends over the period of record are decreasing, since October 2023, BTEX concentrations in monitoring well 2W29 have been increasing. These wells will be further monitored next sampling event to evaluate constituent trends. AECOM Groundwater Results Semiannual Report July – December 2024 7 Concentrations in deep well, DW1, remain below laboratory detection limits suggesting that groundwater impacts are limited to the surficial aquifer at the Site. Groundwater laboratory analytical results for BTEX and MTBE from the October 2024 sampling event are shown on Figures 5A, 5B, 5C, 5D,and 5E, respectively. A copy of the laboratory report is included in Appendix B. AECOM Soil Gas Monitoring and Results Semiannual Report July – December 2024 8 6.0 Soil Gas Monitoring and Results AECOM performed soil gas sampling events at the Site on August 27, 2024, and November 22, 2024. Soil gas samples were collected into laboratory-provided 6-liter stainless-steel summa canisters. The sample duration for each soil gas point was approximately 30 minutes. Prior to sampling, each soil gas point was subjected to a helium leak test to confirm that a proper seal was in place. Soil gas samples were shipped via overnight delivery under chain of custody to Eurofins, a North Carolina- certified laboratory, in Knoxville, Tennessee for analysis of BTEX, MTBE, naphthalene, and 2-methylnaphthalene by USEPA Method TO-15 low-level. Toluene, ethylbenzene, and total xylenes in SG2 and total xylenes in SG3 during the August 2024 sampling event and total xylenes in SG4 during the November 2024 sampling event were above laboratory detection limits but below the respective NCDEQ Residential Exterior Soil Gas Screening Levels. No other results were reported above the laboratory detection limit during the reporting period. The results from this reporting period as well as historical data are presented in Table 8. Copies of the laboratory reports are included in Appendix C. Soil gas locations can be found on Figure 2. AECOM Quality Control Measures Semiannual Report July – December 2024 9 7.0 Quality Control Measures AECOM did not validate analytical results associated with the monthly SVE air sampling events nor the August or November 2024 soil gas sampling events. AECOM validated analytical results associated with the October 2024 groundwater monitoring event at the Site. The data review process was modeled after the USEPA Contract Laboratory Program National Functional Guidelines for Superfund Organic Methods Data Review (USEPA, November 2020) with changes and allowances made to conform to analytical methodology: Qualitative and quantitative limitations associated with the analytical results were determined based on the results of specific quality control criteria. Accuracy was determined from the review of spike recoveries. Precision was based on the evaluation of laboratory duplicate results. Analytical data representativeness and comparability were evaluated from the review of blank results (laboratory and trip blanks), and sample preservation, storage, and holding time compliance. Sensitivity was evaluated by comparing reported detection limits to Site-specific reporting limit objectives. The completeness check of the laboratory deliverable verified that results for all target analytes were reported by the laboratory. Sample results have been qualified based on the results of the data review. Toluene was qualified in select samples due to trip blank contamination. Toluene was qualified in 2W25-20241016 due matrix interference (MS/MSD). Sample concentrations that are less than the reporting limit, but greater than the method detection limit, are estimated. Qualified data are valid and usable for their intended purpose. Data points were not rejected. In performing the data validation, AECOM assumed that the data reported by the laboratory were complete, compliant, and an accurate representation of the raw data. Criteria for acceptability of data were based upon available Site information, analytical method requirements, guidance documents, and professional judgment. The oil-water interface probes and water quality meter were decontaminated with a Liquinox™ and de-ionized water solution prior to use in each well. The water quality meter was calibrated in the field per the manufacturers’ instructions. Site personnel wore new nitrile gloves that were changed between each well during sample collection. AECOM Summary Semiannual Report July – December 2024 10 8.0 Summary Based on the data obtained from Site activities, the following conclusions are presented: From June 21, 2024, to December 20, 2024, the AS runtime was 95.0% and the SVE system runtime was 100%. System downtime can be attributed to planned system shutdown prior to and during the semiannual groundwater sampling event. The AS/SVE systems will be continuously monitored, reviewed, and adjusted in order to maximize performance. The SVE system removed approximately 1,137 pounds of VOCs (as octane) throughout the reporting period. For the October 2024 groundwater monitoring event, groundwater flow direction onsite is toward the northwest with an approximate horizontal gradient of 0.034 feet/foot, consistent with historical interpretations. Groundwater analytical data indicated that seven wells exceeded applicable NCDEQ 2L Standards for one or more sampled constituents during the October 2024 monitoring event. However, monitoring well concentrations largely exhibit a decreasing trend or remain stable over the period of record. It is important to note that as analytical results are received that any sustained or increase in concentration is addressed by increasing flow/vacuum on AS/SVE wells in the vicinity of that particular monitoring well. Concentrations in the northern area of the site appear to be stabilizing or decreasing after exhibiting increasing trends and/or 2L Standard exceedances from 2021-2023. Monitoring wells 2W4, 2W7, 2W30, and 2W31 have exhibited concentrations at trace or non-detect levels apart from MTBE in 2W4 and 2W31 (both exceeded the applicable 2L Standard). Benzene and toluene concentrations in monitoring well 2W25 were the highest over the period of record during the October 2024 sampling event. This trend will be closely monitored over the next two groundwater sampling events. Although trends over the period of record are decreasing, since October 2023, BTEX concentrations in monitoring well 2W29 have been increasing. Toluene, ethylbenzene, and total xylenes in SG2 and total xylenes in SG3 during the August 2024 sampling event and total xylenes in SG4 during the November 2024 sampling event were above laboratory detection limits but below the respective NCDEQ Residential Exterior Soil Gas Screening Levels. Soil gas sampling will continue in 2025 on a quarterly basis with the next event occurring in February 2025. Groundwater sampling will continue in 2025 on a semiannual basis with the next event occurring in April 2025. The next report will be due in August 2025 (semiannually) unless otherwise stated by NCDEQ. The report will include all activities performed at the Site from January through June 2025. AECOM References Semiannual Report July – December 2024 11 9.0 References AECOM. 2020.Corrective Action Modification/New Technology Plan.AECOM Technical Services – North Carolina, May 27, 2020. USEPA. November 2020.Contract Laboratory Program National Functional Guidelines for Superfund Organic Methods Data Review. AECOM Semiannual Report July – December 2024 Tables AECOM Well ID Date of Installation Top of Casing Elevation (feet amsl)(feet bgs)(feet bgs) 2W1 01/19/88 811.87 58.1 38.1-58.1 2W3 01/21/88 805.75 55.5 35.5-55.5 2W4 01/21/88 804.90 55.5 35.5-55.5 2W6 05/24/88 807.71 58.5 28.5-58.5 2W7 05/24/88 810.23 59.8 29.8-59.8 2W8 05/20/88 803.67 44.6 14.6-44.6 2W9 05/23/88 805.24 54.3 24.3-54.3 2W10 06/21/88 812.24 53.6 23.6-53.6 2W11 06/21/88 801.63 59.0 23.7-53.7 2W12 09/01/88 788.26 39.8 19.8-39.8 2W13 11/15/88 807.34 65.6 60.6-65.6 2W14 10/13/88 809.93 59.2 39.2-59.2 2W17 09/01/88 787.00 39.8 19.8-39.8 2W18 09/02/88 782.58 34.2 14.2-34.2 2W19 01/26/89 798.51 43.5 23.5-43.5 2W21 04/27/93 795.25 58.8 33.3-53.3* 2W22 04/23/93 801.02 59.0 38.0-58.0 2W23 04/22/93 786.44 48.0 25.0-45.0 2W25 12/09/20 809.61 59.5 44.5-59.5 2W26 12/11/20 806.53 57.0 42.0-57.0 2W27 12/10/20 808.62 58.0 43.0-58.0 2W28 12/11/20 809.57 56.0 41.0-56.0 2W29 12/11/20 807.90 58.5 43.5-58.5 2W30 06/07/23 801.14 60.0 45.0-60.0 2W31 06/07/23 803.88 55.4 40.4-55.4 DW1 12/03/20 809.43 113.0 108.0-113.0 AS1 11/19/96 808.95 62.0 59.0-61.0 AS4 11/18/96 810.46 50.0 46.0-48.0 AS9 11/21/96 794.53 59.0 55.0-57.0 AS10 11/21/96 796.97 61.0 57.0-59.0 AS13 11/19/96 807.26 61.0 55.0-57.0 Greensboro, Guilford County, North Carolina Table 1 Well Construction Details Products (SE) Pipe Line Corporation - Guilford Greene Site 2617 Quaker Landing Road 2025_02_20 Tables Page 1 of 3 2/20/2025 AECOM Well ID Date of Installation Top of Casing Elevation (feet amsl)(feet bgs)(feet bgs) Greensboro, Guilford County, North Carolina Table 1 Well Construction Details Products (SE) Pipe Line Corporation - Guilford Greene Site 2617 Quaker Landing Road AS101D 06/19/20 NS 96.5 94.0-96.0 AS101S 06/19/20 NS 74.0 72.0-74.0 AS102D 06/23/20 NS 93.0 91.0-93.0 AS102S 06/23/20 NS 74.0 72.0-74.0 AS103D 06/24/20 NS 92.0 90.0-92.0 AS103S 06/24/20 NS 74.0 72.0-74.0 AS104D 06/26/20 NS 90.0 88.0-90.0 AS104S 06/26/20 NS 74.0 72.0-74.0 AS105 06/30/20 NS 71.5 69.5-71.5 AS106D 06/16/20 NS 97.0 95.0-97.0 AS106S 06/16/20 NS 74.5 72.5-74.5 AS107 06/09/20 NS 74.0 72.0-74.0 AS108 06/09/20 NS 68.0 66.0-68.0 AS109 06/18/20 NS 81.0 79.0-81.0 AS110 06/09/20 NS 72.0 69.0-71.0 AS111 06/02/20 NS 66.0 64.0-66.0 AS112 06/11/20 NS 75.0 63.0-65.0 AS113 06/09/20 NS 79.0 77.0-79.0 AS114 06/03/20 NS 73.0 63.0-65.0 AS115 06/18/20 NS 68.5 66.5-68.5 AS116 06/05/20 NS 61.0 59.0-61.0 AS117 06/22/20 NS 67.0 65.0-67.0 AS118 06/30/20 NS 67.0 65.0-67.0 AS119 06/26/20 NS 63.0 61.0-63.0 AS120 06/25/20 NS 62.0 60.0-62.0 AS121 06/24/20 NS 73.0 71.0-73.0 AS122 06/25/20 NS 65.0 61.0-63.0 AS123 06/29/20 NS 66.0 64.0-66.0 2025_02_20 Tables Page 2 of 3 2/20/2025 AECOM Well ID Date of Installation Top of Casing Elevation (feet amsl)(feet bgs)(feet bgs) Greensboro, Guilford County, North Carolina Table 1 Well Construction Details Products (SE) Pipe Line Corporation - Guilford Greene Site 2617 Quaker Landing Road SVE101 06/19/20 NS 30.0 15.0-30.0 SVE102 06/17/20 NS 30.0 15.0-30.0 SVE103 06/17/20 NS 30.0 15.0-30.0 SVE104 06/25/20 NS 30.0 15.0-30.0 SVE105 06/29/20 NS 30.0 15.0-30.0 SVE106 06/12/20 NS 35.0 15.0-35.0 SVE107 06/05/20 NS 30.0 15.0-30.0 SVE108 07/17/20 NS 30.0 15.0-30.0 SVE109 06/03/20 NS 30.0 15.0-30.0 SVE110 06/11/20 NS 30.0 15.0-30.0 SVE111 06/22/20 NS 30.0 15.0-30.0 SVE112 06/09/20 NS 35.0 15.0-30.0 SVE113 06/24/20 NS 30.0 15.0-30.0 SVE114 06/26/20 NS 30.0 15.0-30.0 SVE115 06/24/20 NS 30.0 15.0-30.0 Notes: amsl = above mean sea level bgs = below ground surface NS = not surveyed *sediment sump installed below screen Wells 4W1, 4W2, 4W3, 4W5, 4W7, 4W8, 4W9, 4W14, 4W15, 4W20, 4W21, 4W22, 4W23, AS3, AS16, AS17, AS19, AS20, AS21, AS22, AS24, and VE-21 were abandoned in June 2020. Wells 4W10, 4W11, 4W12, 4W13, 4W16, 4W17, 4W18, 4W19, AS5, AS7, AS11, AS12, AS15, AS25, 2W2, 2W15, 2W16, and 2W20 were abandoned in December 2020. Wells 4W6, AS2, AS6, AS14, and AS23 were abandoned in December 2021. 2025_02_20 Tables Page 3 of 3 2/20/2025 AECOM 06/21/24 --1,115 23,575 --------1 07/02/24 11 1,126 23,838 263 23,838 100.0%88.2%1 Tested condensate drains 07/10/24 8 1,134 24,029 191 24,029 100.0%88.3%1 07/25/24 15 1,149 24,391 362 24,391 100.0%88.5%1 Inspected all filters, OWS condensate media, and compressor radiator 07/31/24 6 1,155 24,532 141 24,532 100.0%88.5%1 08/10/24 10 1,165 24,774 242 24,774 100.0%88.6%1 08/13/24 3 1,168 24,844 70 24,844 100.0%88.6%1 08/29/24 16 1,184 25,229 385 25,229 100.0%88.8%1 Inspected OWS condensate, auto drains, and filters 09/04/24 6 1,190 25,377 148 25,377 100.0%88.9%1 09/18/24 14 1,204 25,712 335 25,712 100.0%89.0%1 09/30/24 12 1,216 25,997 285 25,997 100.0%89.1%1 10/07/24 7 1,223 26,166 169 26,166 100.0%89.1%2 Shut system down prior to groundwater sampling 10/16/24 9 1,232 26,166 0 26,166 0.0%88.5%4 Restarted system 10/24/24 8 1,240 26,357 191 26,357 100.0%88.6%1 Completed annual compressor maintenance 10/30/24 6 1,246 26,503 146 26,503 100.0%88.6%1 Inspected (annual) site fire extinguishers 11/12/24 13 1,259 26,815 312 26,815 100.0%88.7%1 Cleaned intake filter 11/19/24 7 1,266 26,984 169 26,984 100.0%88.8%1 12/02/24 13 1,279 27,295 311 27,295 100.0%88.9%1 12/04/24 2 1,281 27,343 48 27,343 100.0%88.9%1 Inspected intake filter 12/12/24 8 1,289 27,533 190 27,533 100.0%89.0%1 12/20/24 8 1,297 27,724 191 27,724 100.0%89.1%1 182 173 Depart Arrive Code 95.0%on on 1 on off 2 Notes:off off 3 Air Sparge Startup Date:06/02/21 off on 4 This reporting period is from 06/21/24-12/20/24 Significant Maintenance Activities Days Since Startup Hour Meter Reading Hours of Operation (Period) Hours of Operation (Cumulative) Run Time (Period) Run Time (Cumulative) System Status Table 2A Air Sparge Performance Summary Products (SE) Pipe Line Corporation - Guilford Greene Site 2617 Quaker Landing Road Greensboro, Guilford County, North Carolina Total Days in Reporting Period = Run Time in Reporting Period (Days) = Period Run Time = Date Days Between Visits 2025_02_20 Tables Page 1 of 1 2/20/2025 AECOM 06/21/24 0 1,142 30,201 --------1 07/02/24 11 1,153 30,463 262 14,378 100.0%52.0%1 Adjusted vacuum on several wells, inspected particulate filter 07/10/24 8 1,161 30,655 192 14,570 100.0%52.3%1 07/25/24 15 1,176 31,016 361 14,931 100.0%52.9%1 07/31/24 6 1,182 31,158 142 15,073 100.0%53.1%1 08/10/24 10 1,192 31,400 242 15,315 100.0%53.5%1 08/13/24 3 1,195 31,470 70 15,385 100.0%53.6%1 Drained SVE lines 08/29/24 16 1,211 31,855 385 15,770 100.0%54.3%1 09/04/24 6 1,217 32,003 148 15,918 100.0%54.5%1 09/18/24 14 1,231 32,338 335 16,253 100.0%55.0%1 and tank 09/30/24 12 1,243 32,623 285 16,538 100.0%55.4%1 10/07/24 7 1,250 32,794 171 16,709 100.0%55.7%1 10/16/24 9 1,259 33,007 213 16,922 100.0%56.0%1 10/24/24 8 1,267 33,198 191 17,113 100.0%56.3%1 10/30/24 6 1,273 33,346 148 17,261 100.0%56.5%1 11/12/24 13 1,286 33,658 312 17,573 100.0%56.9%1 Drained SVE lines 11/19/24 7 1,293 33,827 169 17,742 100.0%57.2%1 12/02/24 13 1,306 34,138 311 18,053 100.0%57.6%1 Collected monthly water discharge sample 12/04/24 2 1,308 34,186 48 18,101 100.0%57.7%1 12/12/24 8 1,316 34,376 190 18,291 100.0%57.9%1 12/20/24 8 1,324 34,567 191 18,482 100.0%58.2%1 Cleaned compressor radiator 182 182 Depart Arrive Code System operation status codes 100.0%on on 1 on off 2 Notes:off off 3 05/06/21 off on 4 This reporting period is from 06/21/24-12/20/24 Run time in Reporting Period (Days) = Period Run Time = System Status Significant Maintenance ActivitiesDateBetween Visits Since Startup Meter Reading Operation (Period) Operation (Cumulative) Time (Period) Run Time (Cumulative) Total Days in Reporting Period = Table 2B Soil Vapor Extraction Performance Summary Products (SE) Pipe Line Corporation - Guilford Greene Site 2617 Quaker Landing Road Greensboro, Guilford County, North Carolina 2025_02_20 Tables Page 1 of 1 2/20/2025 AECOM 06/11/24 07/10/24 08/13/24 09/18/24 10/07/24 11/12/24 12/12/24 06/11/24 07/10/24 08/13/24 09/18/24 10/07/24 11/12/24 12/12/24 29,962 30,655 31,470 32,338 32,794 33,658 34,376 29,962 30,655 31,470 32,338 32,794 33,658 34,376 211 188 192 189 207 217 199 211 188 192 189 207 217 199 93 62.0 102 43.8 74.6 72.7 88 1.4 1.3 1.8 0.4 1.3 0.8 1.7 0.95 1.1 1.6 1.1 0.81 0.55 0.82 0.086 0.078 0.093 0.077 0.078 0.036 0.044 29 33 42 37 26 15 22 0.1 <0.11 0.099 <0.16 0.099 <0.15 0.071 9.7 9.9 12 12 8.2 5.2 9.0 0.033 0.029 0.027 <0.038 0.037 <0.034 0.031 50 49 57 68 43 26 45 0.2 0.19 0.17 0.078 0.23 <0.068 0.19 89.7 93.0 112.6 118.1 78 46.8 76.8 0.419 0.297 0.389 0.155 0.444 0.036 0.336 <2.1 <2.7 <1.1 <4.5 <1.2 <1.5 <1.1 <0.081 <0.11 <0.072 <0.16 <0.036 <0.14 <0.036 310 350 470 460 270 200 370 10 8.0 10.0 6.8 8.4 5.9 7.3 5.9 5.9 8.1 7.8 5.0 3.9 6.6 0.19 0.14 0.17 0.12 0.16 0.12 0.13 23,162 23,332 23,570 23,858 23,980 24,141 24,298 ------- Notes: Emission rates and total mass removed are calculated based on Total VOC (as Octane) analytical results Analytical results are reported in milligrams per cubic meter BTEX = benzene, toluene, ethylbenzene, total xylenes lbs = pounds ppm = parts per million scfm = standard cubic feet per minute < = below laboratory detection limits Total VOC (as Octane) Emission rate (lbs/day) Cumulative mass removed (lbs) Benzene Toluene Ethylbenzene Xylenes Total BTEX Date Hour meter Airflow rate (scfm) Photoionization detector (ppm) Methyl tert-butyl ether Sample Location Influent Effluent Table 3 SVE Analytical Results Products (SE) Pipe Line Corporation - Guilford Greene Site 2617 Quaker Landing Road Greensboro, Guilford County, North Carolina 2025_02_20 Tables Page 1 of 1 2/20/2025 AECOM Well ID Date Top of Casing Elevation (feet amsl) Depth to LNAPL (feet btoc) Depth to Groundwater (feet btoc) LNAPL (feet) Corrected Groundwater Elevation¹ (feet amsl) 08/08/04 ND 46.45 --765.42 08/23/05 ND 47.59 --764.28 03/15/06 ND 48.01 --763.86 08/28/06 ND 48.99 --762.88 02/15/07 ND 48.00 --763.87 08/08/07 ND 48.69 --763.18 02/06/08 ND 49.56 --762.31 08/12/08 ND 49.53 --762.34 02/26/09 ND 49.56 --762.31 08/03/09 ND 49.85 --762.02 02/22/10 ND 49.02 --762.85 08/18/10 ND 48.25 --763.62 02/17/11 ND 48.96 --762.91 08/16/11 ND 49.54 --762.33 04/23/12 ND 49.42 --762.45 10/12/12 ND 50.72 --761.15 04/10/13 ND 50.87 --761.00 08/06/13 ND 50.24 --761.63 11/15/13 ND 50.26 --761.61 04/17/14 ND 49.54 --762.33 08/26/14 ND 49.25 --762.62 08/07/15 ND 20.59 --791.28 09/02/15 ND 51.11 --760.76 08/25/16 ND 49.17 --762.70 03/23/17 ND 49.61 --762.26 08/14/17 ND 49.75 --762.12 08/27/18 ND 50.78 --761.09 09/11/18 ND 50.92 --760.95 12/17/18 ND 49.71 --762.16 03/21/19 ND 48.02 --763.85 06/14/19 ND 46.96 --764.91 08/13/19 ND 46.63 --765.24 02/23/20 ND 47.31 --764.56 08/11/20 ND 46.09 --765.78 02/22/21 ND 45.69 --766.18 03/22/21 ND 45.58 --766.29 08/17/21 ND 45.50 --766.37 11/17/21 ND 46.81 --765.06 02/16/22 ND 47.00 --764.87 05/15/22 ND 48.01 --763.86 10/18/22 ND 48.79 --763.08 04/24/23 ND 48.58 --763.29 10/03/23 ND 48.32 --763.55 04/09/24 ND 49.13 --762.74 10/15/24 ND 48.73 --763.14 Table 4 Historical Groundwater Elevation Data Products (SE) Pipe Line Corporation - Guilford Greene Site Greensboro, Guilford County, North Carolina 2617 Quaker Landing Road 2W1 811.87 2025_02_20 Tables Page 1 of 22 2/20/2025 AECOM Well ID Date Top of Casing Elevation (feet amsl) Depth to LNAPL (feet btoc) Depth to Groundwater (feet btoc) LNAPL (feet) Corrected Groundwater Elevation¹ (feet amsl) Table 4 Historical Groundwater Elevation Data Products (SE) Pipe Line Corporation - Guilford Greene Site Greensboro, Guilford County, North Carolina 2617 Quaker Landing Road 02/23/05 ND 50.08 --755.67 08/23/05 ND 50.63 --755.12 03/15/06 ND 51.27 --754.48 08/28/06 ND 52.15 --753.60 02/15/07 ND 51.03 --754.72 08/08/07 ND 51.86 --753.89 02/06/08 ND 52.69 --753.06 08/12/08 ND 53.44 --752.31 02/26/09 ND 52.55 --753.20 08/03/09 ND 52.88 --752.87 02/22/10 ND 51.25 --754.50 08/18/10 ND 51.17 --754.58 02/17/11 ND 52.07 --753.68 08/16/11 ND 52.67 --753.08 04/23/12 ND 51.74 --754.01 10/12/12 ND 53.27 --752.48 04/10/13 ND 52.69 --753.06 08/06/13 ND 52.43 --753.32 11/15/13 ND 52.83 --752.92 04/17/14 ND 51.86 --753.89 08/26/14 ND 52.22 --753.53 08/07/15 ND 53.44 --752.31 09/02/15 ND 53.81 --751.94 08/25/16 ND 49.62 --756.13 03/23/17 ND 50.39 --755.36 08/14/17 ND 50.28 --755.47 08/27/18 ND 51.45 --754.30 09/11/18 ND 51.59 --754.16 12/17/18 ND 49.94 --755.81 03/21/19 ND 47.61 --758.14 06/14/19 ND 46.27 --759.48 08/13/19 ND 46.47 --759.28 02/23/20 ND 47.93 --757.82 08/11/20 ND 46.19 --759.56 02/22/21 ND 45.82 --759.93 03/22/21 ND 45.49 --760.26 08/17/21 ND 46.22 --759.53 11/17/21 ND 48.16 --757.59 02/16/22 ND 49.11 --756.64 05/15/22 ND 48.91 --756.84 10/18/22 ND 49.86 --755.89 04/24/23 ND 48.92 --756.83 10/03/23 ND 49.33 --756.42 04/09/24 ND 49.21 --756.54 10/15/24 ND 49.28 --756.47 2W3 805.75 2025_02_20 Tables Page 2 of 22 2/20/2025 AECOM Well ID Date Top of Casing Elevation (feet amsl) Depth to LNAPL (feet btoc) Depth to Groundwater (feet btoc) LNAPL (feet) Corrected Groundwater Elevation¹ (feet amsl) Table 4 Historical Groundwater Elevation Data Products (SE) Pipe Line Corporation - Guilford Greene Site Greensboro, Guilford County, North Carolina 2617 Quaker Landing Road 02/23/05 ND 48.67 --756.23 08/23/05 ND 49.42 --755.48 03/15/06 ND 49.58 --755.32 08/28/06 ND 50.72 --754.18 02/15/07 ND 49.20 --755.70 08/08/07 ND 50.76 --754.14 02/06/08 ND 50.72 --754.18 08/12/08 ND 51.87 --753.03 02/26/09 ND 50.53 --754.37 08/03/09 ND 51.36 --753.54 02/22/10 ND 49.13 --755.77 08/18/10 ND 49.97 --754.93 02/17/11 ND 50.31 --754.59 08/16/11 ND 50.98 --753.92 04/23/12 ND 49.91 --754.99 10/12/12 ND 51.64 --753.26 04/10/13 ND 51.04 --753.86 08/06/13 ND 51.03 --753.87 11/15/13 ND 51.30 --753.60 04/17/14 ND 49.98 --754.92 08/26/14 ND 50.96 --753.94 08/07/15 ND 51.53 --753.37 09/02/15 ND 52.15 --752.75 08/25/16 ND 48.71 --756.19 03/23/17 ND 48.92 --755.98 08/14/17 ND 49.18 --755.72 08/27/18 ND 49.97 --754.93 09/11/18 ND 50.07 --754.83 12/17/18 ND 48.15 --756.75 03/21/19 ND 46.31 --758.59 06/14/19 ND 46.02 --758.88 08/13/19 ND 46.32 --758.58 02/23/20 ND 46.79 --758.11 08/11/20 ND 46.06 --758.84 02/22/21 ND 45.27 --759.63 03/22/21 ND 45.12 --759.78 08/17/21 ND 46.29 --758.61 11/17/21 ND 47.88 --757.02 02/16/22 ND 47.66 --757.24 05/15/22 ND 48.71 --756.19 10/18/22 ND 48.45 --756.45 04/24/23 ND 47.14 --757.76 10/03/23 ND 47.99 --756.91 04/09/24 ND 48.04 --756.86 10/15/24 ND 48.44 --756.46 2W4 804.90 2025_02_20 Tables Page 3 of 22 2/20/2025 AECOM Well ID Date Top of Casing Elevation (feet amsl) Depth to LNAPL (feet btoc) Depth to Groundwater (feet btoc) LNAPL (feet) Corrected Groundwater Elevation¹ (feet amsl) Table 4 Historical Groundwater Elevation Data Products (SE) Pipe Line Corporation - Guilford Greene Site Greensboro, Guilford County, North Carolina 2617 Quaker Landing Road 01/11/21 47.09 48.66 1.57 760.31 02/22/21 46.61 48.28 1.67 760.77 06/02/21 45.56 47.49 1.93 761.76 07/19/21 42.11 42.30 0.19 765.56 08/17/21 43.87 43.93 0.06 763.83 09/23/21 43.38 43.61 0.23 764.28 11/01/21 ND 45.44 --762.27 11/17/21 ND 46.11 --761.60 12/16/21 46.21 46.24 0.03 761.49 02/16/22 43.02 43.07 0.05 764.68 05/15/22 ND 45.66 --762.05 10/18/22 ND 48.30 --759.41 04/24/23 ND 46.29 --761.42 10/03/23 ND 46.30 --761.41 04/09/24 ND 49.38 --758.33 10/15/24 ND 49.07 --758.64 2W6 807.71 2025_02_20 Tables Page 4 of 22 2/20/2025 AECOM Well ID Date Top of Casing Elevation (feet amsl) Depth to LNAPL (feet btoc) Depth to Groundwater (feet btoc) LNAPL (feet) Corrected Groundwater Elevation¹ (feet amsl) Table 4 Historical Groundwater Elevation Data Products (SE) Pipe Line Corporation - Guilford Greene Site Greensboro, Guilford County, North Carolina 2617 Quaker Landing Road 02/23/05 ND 51.01 --759.22 08/23/05 ND 51.78 --758.45 03/15/06 ND 52.04 --758.19 08/28/06 ND 53.17 --757.06 02/15/07 ND 51.66 --758.57 08/08/07 ND 53.19 --757.04 02/06/08 ND 53.31 --756.92 08/12/08 ND 54.41 --755.82 02/26/09 ND 53.10 --757.13 08/03/09 ND 53.84 --756.39 02/22/10 ND 51.74 --758.49 08/18/10 ND 52.29 --757.94 02/17/11 ND 52.78 --757.45 08/16/11 ND 53.43 --756.80 04/23/12 ND 52.38 --757.85 10/12/12 ND 54.19 --756.04 04/10/13 ND 53.62 --756.61 08/06/13 ND 53.54 --756.69 11/15/13 ND 53.78 --756.45 04/17/14 ND 52.54 --757.69 08/26/14 ND 53.36 --756.87 08/07/15 ND 54.14 --756.09 09/02/15 ND 54.64 --755.59 08/25/16 ND 50.67 --759.56 03/23/17 ND 50.99 --759.24 08/14/17 ND 51.15 --759.08 08/27/18 ND 52.13 --758.10 09/11/18 ND 52.22 --758.01 12/17/18 ND 50.31 --759.92 03/21/19 ND 48.29 --761.94 06/14/19 ND 47.73 --762.50 08/13/19 ND 47.96 --762.27 02/23/20 ND 48.73 --761.50 08/11/20 ND 47.69 --762.54 02/21/21 ND 47.03 --763.20 03/22/21 ND 46.84 --763.39 08/17/21 ND 49.86 --760.37 11/17/21 ND 49.56 --760.67 02/16/22 ND 49.95 --760.28 05/15/22 ND 50.44 --759.79 10/18/22 ND 50.43 --759.80 04/24/23 ND 49.26 --760.97 10/03/23 ND 49.91 --760.32 04/09/24 ND 50.16 --760.07 10/15/24 ND 50.41 --759.82 2W7 810.23 2025_02_20 Tables Page 5 of 22 2/20/2025 AECOM Well ID Date Top of Casing Elevation (feet amsl) Depth to LNAPL (feet btoc) Depth to Groundwater (feet btoc) LNAPL (feet) Corrected Groundwater Elevation¹ (feet amsl) Table 4 Historical Groundwater Elevation Data Products (SE) Pipe Line Corporation - Guilford Greene Site Greensboro, Guilford County, North Carolina 2617 Quaker Landing Road 08/08/04 ND 39.77 --763.90 02/23/05 ND 40.76 --762.91 08/23/05 ND 41.59 --762.08 03/15/06 ND 42.73 --760.94 08/28/06 ND 43.77 --759.90 02/15/07 ND 42.27 --761.40 08/08/07 ND 43.04 --760.63 02/06/08 ND 45.01 --758.66 08/12/08 ND 44.91 --758.76 02/26/09 ND 44.61 --759.06 08/03/09 ND 43.92 --759.75 02/22/10 ND 42.73 --760.94 08/18/10 ND 41.96 --761.71 02/17/11 ND 43.59 --760.08 08/16/11 ND 43.76 --759.91 04/23/12 ND 43.52 --760.15 10/12/12 ND 45.09 --758.58 04/10/13 ND 44.93 --758.74 08/06/13 ND 43.98 --759.69 11/15/13 ND 44.07 --759.60 04/17/14 ND 43.53 --760.14 08/26/14 ND 43.17 --760.50 08/07/15 Dry Dry ---- 09/02/15 Dry Dry ---- 08/25/16 ND 41.60 --762.07 03/23/17 ND 42.83 --760.84 08/14/17 ND 42.10 --761.57 08/27/18 Dry Dry ---- 09/11/18 Dry Dry ---- 12/17/18 ND 43.04 --760.63 03/21/19 ND 40.41 --763.26 06/14/19 ND 38.81 --764.86 08/13/19 ND 38.45 --765.22 02/23/20 ND 39.66 --764.01 08/11/20 ND 37.49 --766.18 02/22/21 ND 37.08 --766.59 08/17/21 ND 36.91 --766.76 11/17/21 ND 38.60 --765.07 02/16/22 ND 39.82 --763.85 05/15/22 ND 40.32 --763.35 10/18/22 ND 41.38 --762.29 04/24/23 ND 40.97 --762.70 10/03/23 ND 40.79 --762.88 04/09/24 ND 41.61 --762.06 10/15/24 ND 40.87 --762.80 2W8 803.67 2025_02_20 Tables Page 6 of 22 2/20/2025 AECOM Well ID Date Top of Casing Elevation (feet amsl) Depth to LNAPL (feet btoc) Depth to Groundwater (feet btoc) LNAPL (feet) Corrected Groundwater Elevation¹ (feet amsl) Table 4 Historical Groundwater Elevation Data Products (SE) Pipe Line Corporation - Guilford Greene Site Greensboro, Guilford County, North Carolina 2617 Quaker Landing Road 03/15/06 ND 45.45 --759.79 08/28/06 ND 46.59 --758.65 02/15/07 ND 44.98 --760.26 08/08/07 ND 46.16 --759.08 02/06/08 ND 47.30 --757.94 08/12/08 ND 47.79 --757.45 02/26/09 ND 47.13 --758.11 08/03/09 ND 47.01 --758.23 02/22/10 ND 25.77 --779.47 08/18/10 ND 44.18 --761.06 02/17/11 ND 46.29 --758.95 08/16/11 ND 46.52 --758.72 04/23/12 ND 44.61 --760.63 10/12/12 ND 47.97 --757.27 04/10/13 ND 47.74 --757.50 04/17/14 ND 45.86 --759.38 08/25/16 ND 47.23 --758.01 03/23/17 ND 47.89 --757.35 08/14/17 Dry Dry ---- 08/27/18 Dry Dry ---- 12/17/18 ND 42.51 --762.73 06/14/19 ND 39.92 --765.32 08/13/19 ND 43.49 --761.75 02/23/20 ND 43.22 --762.02 08/11/20 ND 41.73 --763.51 02/22/21 ND 37.74 --767.50 03/22/21 ND 40.92 --764.32 08/17/21 ND 38.36 --766.88 11/17/21 ND 43.47 --761.77 02/16/22 ND 44.70 --760.54 05/15/22 ND 37.08 --768.16 10/18/22 ND 36.69 --768.55 04/24/23 ND 43.42 --761.82 10/03/23 ND 45.14 --760.10 04/09/24 ND 46.43 --758.81 10/15/24 ND 45.85 --759.39 2W9 805.24 2025_02_20 Tables Page 7 of 22 2/20/2025 AECOM Well ID Date Top of Casing Elevation (feet amsl) Depth to LNAPL (feet btoc) Depth to Groundwater (feet btoc) LNAPL (feet) Corrected Groundwater Elevation¹ (feet amsl) Table 4 Historical Groundwater Elevation Data Products (SE) Pipe Line Corporation - Guilford Greene Site Greensboro, Guilford County, North Carolina 2617 Quaker Landing Road 02/23/05 ND 49.35 --762.89 08/23/05 ND 50.27 --761.97 03/15/06 ND 50.88 --761.36 08/28/06 ND 52.13 --760.11 02/15/07 ND 50.84 --761.40 08/08/07 ND 51.90 --760.34 02/06/08 ND 52.59 --759.65 08/12/08 ND 52.99 --759.25 02/26/09 ND 52.52 --759.72 08/03/09 ND 52.91 --759.33 02/22/10 ND 51.54 --760.70 08/18/10 ND 51.05 --761.19 02/17/11 ND 51.74 --760.50 08/16/11 ND 52.19 --760.05 04/23/12 ND 51.90 --760.34 10/12/12 ND 53.73 --758.51 04/10/13 ND 53.68 --758.56 08/06/13 ND 53.09 --759.15 11/15/13 ND 53.10 --759.14 04/17/14 ND 52.19 --760.05 08/26/14 ND 52.12 --760.12 08/07/15 ND 53.42 --758.82 09/02/15 Dry Dry ---- 08/25/16 ND 52.12 --760.12 03/23/17 ND 52.37 --759.87 08/14/17 ND 52.56 --759.68 08/27/18 ND 54.05 --758.19 09/11/18 Dry Dry ---- 12/17/18 ND 52.50 --759.74 03/21/19 ND 50.50 --761.74 06/14/19 ND 49.20 --763.04 08/13/19 ND 45.76 --766.48 02/23/20 ND 49.58 --762.66 08/11/20 ND 48.05 --764.19 02/22/21 ND 47.48 --764.76 03/22/21 ND 47.31 --764.93 08/17/21 ND 47.13 --765.11 11/17/21 ND 48.67 --763.57 02/16/22 ND 49.73 --762.51 05/15/22 ND 50.19 --762.05 10/18/22 ND 50.78 --761.46 04/24/23 ND 50.72 --761.52 10/03/23 ND 50.48 --761.76 04/09/24 ND 51.72 --760.52 10/15/24 ND 51.32 --760.92 2W10 812.24 2025_02_20 Tables Page 8 of 22 2/20/2025 AECOM Well ID Date Top of Casing Elevation (feet amsl) Depth to LNAPL (feet btoc) Depth to Groundwater (feet btoc) LNAPL (feet) Corrected Groundwater Elevation¹ (feet amsl) Table 4 Historical Groundwater Elevation Data Products (SE) Pipe Line Corporation - Guilford Greene Site Greensboro, Guilford County, North Carolina 2617 Quaker Landing Road 08/25/16 ND 47.56 --754.07 03/23/17 ND 47.43 --754.20 08/14/17 ND 48.25 --753.38 08/27/18 ND 49.20 --752.43 09/11/18 ND 49.68 --751.95 12/17/18 ND 47.12 --754.51 03/21/19 ND 43.81 --757.82 06/14/19 ND 42.74 --758.89 08/13/19 ND 43.39 --758.24 02/23/20 ND 44.44 --757.19 08/11/20 ND 43.12 --758.51 02/22/21 ND 41.98 --759.65 03/22/21 ND 41.35 --760.28 08/17/21 ND 42.86 --758.77 11/17/21 ND 45.18 --756.45 02/16/22 ND 44.43 --757.20 05/15/22 ND 44.58 --757.05 10/18/22 ND 46.87 --754.76 04/24/23 ND 45.37 --756.26 10/03/23 ND 46.24 --755.39 04/09/24 ND 46.13 --755.50 10/15/24 ND 46.42 --755.21 2W11 801.63 2025_02_20 Tables Page 9 of 22 2/20/2025 AECOM Well ID Date Top of Casing Elevation (feet amsl) Depth to LNAPL (feet btoc) Depth to Groundwater (feet btoc) LNAPL (feet) Corrected Groundwater Elevation¹ (feet amsl) Table 4 Historical Groundwater Elevation Data Products (SE) Pipe Line Corporation - Guilford Greene Site Greensboro, Guilford County, North Carolina 2617 Quaker Landing Road 08/08/04 ND 29.73 --758.53 02/23/05 ND 31.33 --756.93 08/23/05 ND 31.70 --756.56 03/15/06 ND 33.38 --754.88 08/28/06 ND 33.82 --754.44 02/15/07 ND 32.88 --755.38 08/08/07 ND 32.93 --755.33 02/06/08 ND 35.52 --752.74 08/12/08 ND 35.33 --752.93 02/26/09 ND 35.43 --752.83 08/03/09 ND 34.22 --754.04 02/22/10 ND 33.37 --754.89 08/18/10 ND 32.35 --755.91 02/17/11 ND 34.38 --753.88 08/16/11 ND 34.66 --753.60 04/23/12 ND 34.39 --753.87 10/12/12 ND 35.74 --752.52 04/10/13 ND 35.06 --753.20 08/06/13 ND 34.33 --753.93 11/15/13 ND 34.56 --753.70 04/17/14 ND 33.75 --754.51 08/26/14 ND 33.47 --754.79 08/07/15 ND 35.88 --752.38 09/02/15 ND 36.24 --752.02 08/25/16 ND 31.78 --756.48 03/23/17 ND 33.59 --754.67 08/14/17 ND 32.37 --755.89 08/27/18 ND 34.70 --753.56 09/11/18 ND 34.83 --753.43 12/17/18 ND 33.44 --754.82 03/21/19 ND 30.48 --757.78 06/14/19 ND 29.11 --759.15 08/13/19 ND 28.96 --759.30 02/23/20 ND 31.16 --757.10 08/11/20 ND 28.13 --760.13 02/22/21 ND 27.33 --760.93 08/17/21 ND 27.42 --760.84 11/17/21 ND 29.61 --758.65 02/16/22 ND 31.04 --757.22 05/15/22 ND 31.05 --757.21 10/18/22 ND 32.50 --755.76 04/24/23 ND 31.74 --756.52 10/03/23 ND 32.17 --756.09 04/09/24 ND 32.21 --756.05 10/15/24 ND 32.06 --756.20 2W12 788.26 2025_02_20 Tables Page 10 of 22 2/20/2025 AECOM Well ID Date Top of Casing Elevation (feet amsl) Depth to LNAPL (feet btoc) Depth to Groundwater (feet btoc) LNAPL (feet) Corrected Groundwater Elevation¹ (feet amsl) Table 4 Historical Groundwater Elevation Data Products (SE) Pipe Line Corporation - Guilford Greene Site Greensboro, Guilford County, North Carolina 2617 Quaker Landing Road 02/23/05 ND 51.78 --755.56 08/23/05 ND 52.86 --754.48 03/15/06 ND 53.27 --754.07 08/28/06 ND 54.79 --752.55 02/15/07 ND 52.98 --754.36 08/08/07 ND 54.60 --752.74 02/06/08 ND 55.03 --752.31 08/12/08 ND 56.07 --751.27 02/26/09 ND 54.76 --752.58 08/03/09 ND 55.45 --751.89 02/22/10 ND 53.15 --754.19 08/18/10 ND 53.54 --753.80 02/17/11 ND 54.22 --753.12 08/16/11 ND 54.81 --752.53 04/23/12 ND 53.77 --753.57 10/12/12 ND 55.94 --751.40 04/10/13 ND 55.21 --752.13 08/06/13 ND 55.09 --752.25 11/15/13 ND 55.37 --751.97 04/17/14 ND 53.79 --753.55 08/26/14 ND 54.98 --752.36 08/07/15 ND 55.66 --751.68 09/02/15 ND 56.62 --750.72 08/25/16 ND 52.65 --754.69 03/23/17 ND 52.31 --755.03 08/14/17 ND 53.18 --754.16 08/27/18 ND 54.24 --753.10 09/11/18 ND 54.43 --752.91 12/17/18 ND 51.93 --755.41 03/21/19 ND 49.20 --758.14 06/14/19 ND 47.81 --759.53 08/13/19 ND 48.64 --758.70 02/23/20 ND 49.57 --757.77 08/11/20 ND 48.27 --759.07 02/22/21 ND 47.32 --760.02 03/22/21 ND 46.89 --760.45 08/17/21 ND 48.14 --759.20 11/17/21 ND 50.62 --756.72 02/16/22 ND 49.84 --757.50 05/15/22 ND 50.83 --756.51 10/18/22 ND 52.34 --755.00 04/24/23 ND 50.11 --757.23 10/03/23 ND 51.01 --756.33 04/09/24 ND 51.53 --755.81 10/15/24 ND 51.85 --755.49 2W13 807.34 2025_02_20 Tables Page 11 of 22 2/20/2025 AECOM Well ID Date Top of Casing Elevation (feet amsl) Depth to LNAPL (feet btoc) Depth to Groundwater (feet btoc) LNAPL (feet) Corrected Groundwater Elevation¹ (feet amsl) Table 4 Historical Groundwater Elevation Data Products (SE) Pipe Line Corporation - Guilford Greene Site Greensboro, Guilford County, North Carolina 2617 Quaker Landing Road 02/23/05 51.46 51.89 0.43 758.38 08/23/05 53.43 54.24 0.81 756.34 03/15/06 51.85 51.97 0.12 758.06 08/28/06 54.08 54.23 0.15 755.82 02/15/07 ND 51.64 --758.29 08/08/07 57.21 57.27 0.06 752.71 02/06/08 53.28 53.62 0.34 756.58 08/12/08 58.55 58.88 0.33 751.31 02/26/09 52.68 52.93 0.25 757.20 08/03/09 58.61 58.63 0.02 751.32 02/22/10 ND 51.89 --758.04 08/18/10 ND 56.85 --753.08 02/17/11 ND 52.49 --757.44 08/16/11 ND 53.38 --756.55 04/23/12 ND 52.47 --757.46 10/12/12 ND 57.75 --752.18 04/10/13 ND 57.10 --752.83 08/06/13 ND 54.05 --755.88 11/15/13 ND 57.10 --752.83 04/17/14 ND 53.16 --756.77 08/26/14 ND 56.49 --753.44 08/07/15 ND 53.59 --756.34 09/02/15 ND 56.79 --753.14 08/25/16 ND 53.96 --755.97 03/23/17 ND 52.78 --757.15 08/14/17 ND 56.00 --753.93 08/27/18 54.05 54.30 0.25 755.83 12/17/18 ND 52.30 --757.63 03/21/19 ND 50.85 --759.08 06/14/19 ND 50.56 --759.37 08/13/19 ND 50.65 --759.28 02/23/20 ND 50.96 --758.97 08/11/20 ND 50.44 --759.49 02/22/21 ND 49.73 --760.20 03/22/21 ND 49.66 --760.27 06/02/21 ND 49.47 --760.46 08/17/21 ND 50.32 --759.61 11/17/21 ND 51.83 --758.10 02/16/22 ND 47.68 --762.25 05/15/22 ND 49.66 --760.27 10/18/22 ND 51.88 --758.05 04/24/23 ND 50.39 --759.54 10/03/23 ND 51.18 --758.75 04/09/24 ND 52.57 --757.36 10/15/24 ND 52.92 --757.01 2W14 809.93 2025_02_20 Tables Page 12 of 22 2/20/2025 AECOM Well ID Date Top of Casing Elevation (feet amsl) Depth to LNAPL (feet btoc) Depth to Groundwater (feet btoc) LNAPL (feet) Corrected Groundwater Elevation¹ (feet amsl) Table 4 Historical Groundwater Elevation Data Products (SE) Pipe Line Corporation - Guilford Greene Site Greensboro, Guilford County, North Carolina 2617 Quaker Landing Road 02/23/05 ND 29.14 --757.86 08/23/05 ND 29.85 --757.15 03/15/06 ND 31.21 --755.79 08/28/06 ND 31.91 --755.09 02/15/07 ND 30.81 --756.19 08/08/07 ND 31.34 --755.66 02/06/08 ND 33.28 --753.72 08/12/08 ND 33.51 --753.49 02/26/09 ND 33.18 --753.82 08/03/09 ND 32.54 --754.46 02/22/10 ND 31.40 --755.60 08/18/10 ND 30.83 --756.17 02/17/11 ND 32.38 --754.62 08/16/11 ND 32.85 --754.15 04/23/12 ND 32.10 --754.90 10/12/12 ND 33.72 --753.28 04/10/13 ND 32.89 --754.11 08/06/13 ND 32.21 --754.79 11/15/13 ND 32.87 --754.13 04/17/14 ND 31.35 --755.65 08/26/14 ND 31.79 --755.21 08/07/15 ND 33.99 --753.01 09/02/15 ND 34.43 --752.57 08/25/16 ND 32.30 --754.70 03/23/17 ND 33.17 --753.83 08/14/17 ND 32.78 --754.22 08/27/18 ND 34.73 --752.27 09/11/18 ND 34.89 --752.11 12/17/18 ND 32.87 --754.13 03/21/19 ND 29.35 --757.65 06/14/19 ND 28.40 --758.60 08/13/19 ND 28.74 --758.26 02/23/20 ND 29.48 --757.52 08/11/20 ND 28.08 --758.92 02/22/21 ND 26.74 --760.26 03/22/21 ND 25.97 --761.03 08/17/21 ND 27.67 --759.33 11/17/21 ND 29.74 --757.26 02/16/22 ND 31.76 --755.24 05/15/22 ND 30.54 --756.46 10/18/22 ND 32.31 --754.69 04/24/23 ND 30.99 --756.01 10/03/23 ND 31.98 --755.02 04/09/24 ND 31.46 --755.54 10/15/24 ND 31.77 --755.23 2W17 787.00 2025_02_20 Tables Page 13 of 22 2/20/2025 AECOM Well ID Date Top of Casing Elevation (feet amsl) Depth to LNAPL (feet btoc) Depth to Groundwater (feet btoc) LNAPL (feet) Corrected Groundwater Elevation¹ (feet amsl) Table 4 Historical Groundwater Elevation Data Products (SE) Pipe Line Corporation - Guilford Greene Site Greensboro, Guilford County, North Carolina 2617 Quaker Landing Road 08/08/04 ND 26.32 --756.26 02/23/05 ND 26.76 --755.82 08/23/05 ND 27.68 --754.90 03/15/06 ND 28.63 --753.95 08/28/06 ND 29.58 --753.00 02/15/07 ND 28.27 --754.31 08/08/07 ND 29.42 --753.16 02/06/08 ND 30.67 --751.91 08/12/08 ND 31.15 --751.43 02/26/09 ND 30.37 --752.21 08/03/09 ND 30.38 --752.20 02/22/10 ND 28.60 --753.98 08/18/10 ND 28.84 --753.74 02/17/11 ND 29.91 --752.67 08/16/11 ND 30.46 --752.12 04/23/12 ND 29.32 --753.26 10/12/12 ND 31.21 --751.37 04/10/13 ND 20.35 --762.23 08/06/13 ND 29.86 --752.72 11/15/13 ND 30.67 --751.91 04/17/14 ND 28.94 --753.64 08/26/14 ND 29.86 --752.72 08/07/15 ND 31.52 --751.06 09/02/15 ND 32.03 --750.55 03/23/17 ND 29.16 --753.42 08/14/17 ND 29.51 --753.07 08/27/18 ND 30.90 --751.68 09/11/18 ND 31.13 --751.45 12/17/18 ND 28.58 --754.00 03/21/19 ND 24.96 --757.62 06/14/19 ND 24.44 --758.14 08/13/19 ND 25.09 --757.49 02/23/20 ND 25.52 --757.06 08/11/20 ND 24.66 --757.92 02/22/21 ND 23.12 --759.46 03/22/21 ND 22.20 --760.38 08/17/21 ND 24.84 --757.74 11/17/21 ND 26.69 --755.89 02/16/22 ND 27.30 --755.28 05/15/22 ND 26.73 --755.85 10/18/22 ND 28.57 --754.01 04/24/23 ND 26.88 --755.70 10/03/23 ND 28.11 --754.47 04/09/24 ND 27.39 --755.19 10/15/24 ND 27.93 --754.65 2W18 782.58 2025_02_20 Tables Page 14 of 22 2/20/2025 AECOM Well ID Date Top of Casing Elevation (feet amsl) Depth to LNAPL (feet btoc) Depth to Groundwater (feet btoc) LNAPL (feet) Corrected Groundwater Elevation¹ (feet amsl) Table 4 Historical Groundwater Elevation Data Products (SE) Pipe Line Corporation - Guilford Greene Site Greensboro, Guilford County, North Carolina 2617 Quaker Landing Road 08/08/04 ND 36.79 --761.72 02/23/05 ND 38.35 --760.16 08/23/05 ND 38.78 --759.73 03/15/06 ND 40.16 --758.35 08/28/06 ND 41.08 --757.43 02/15/07 ND 40.03 --758.48 08/08/07 ND 40.10 --758.41 02/06/08 ND 42.19 --756.32 08/12/08 ND 42.49 --756.02 02/26/09 ND 42.88 --755.63 08/03/09 ND 41.69 --756.82 02/22/10 ND 41.42 --757.09 08/18/10 ND 39.08 --759.43 02/17/11 ND 40.96 --757.55 08/16/11 ND 41.72 --756.79 04/23/12 ND 42.03 --756.48 10/12/12 ND 43.02 --755.49 04/10/13 ND 43.00 --755.51 08/06/13 ND 42.04 --756.47 11/15/13 ND 41.96 --756.55 04/17/14 ND 41.76 --756.75 08/26/14 ND 40.78 --757.73 08/07/15 ND 43.36 --755.15 09/02/15 ND 43.65 --754.86 08/25/16 ND 37.51 --761.00 03/23/17 ND 39.08 --759.43 08/14/17 ND 38.46 --760.05 08/27/18 ND 40.65 --757.86 09/11/18 ND 40.55 --757.96 12/17/18 ND 40.02 --758.49 03/21/19 ND 37.61 --760.90 06/14/19 ND 35.11 --763.40 08/13/19 ND 34.83 --763.68 02/23/20 ND 36.28 --762.23 08/11/20 ND 34.06 --764.45 02/22/21 ND 33.36 --765.15 08/17/21 ND 33.01 --765.50 11/17/21 ND 34.72 --763.79 02/16/22 ND 36.16 --762.35 05/15/22 ND 36.68 --761.83 10/18/22 ND 38.09 --760.42 04/24/23 ND 38.24 --760.27 10/03/23 ND 37.91 --760.60 04/09/24 ND 38.68 --759.83 10/15/24 ND 37.86 --760.65 2W19 798.51 2025_02_20 Tables Page 15 of 22 2/20/2025 AECOM Well ID Date Top of Casing Elevation (feet amsl) Depth to LNAPL (feet btoc) Depth to Groundwater (feet btoc) LNAPL (feet) Corrected Groundwater Elevation¹ (feet amsl) Table 4 Historical Groundwater Elevation Data Products (SE) Pipe Line Corporation - Guilford Greene Site Greensboro, Guilford County, North Carolina 2617 Quaker Landing Road 08/08/04 ND 37.46 --757.79 02/23/05 ND 38.17 --757.08 08/23/05 ND 38.82 --756.43 03/15/06 ND 39.74 --755.51 08/28/06 ND 40.49 --754.76 02/15/07 ND 39.41 --755.84 08/08/07 ND 40.27 --754.98 02/06/08 ND 41.36 --753.89 08/12/08 ND 41.97 --753.28 02/26/09 ND 41.14 --754.11 08/03/09 ND 41.31 --753.94 02/22/10 ND 39.75 --755.50 08/18/10 ND 39.81 --755.44 02/17/11 ND 40.78 --754.47 08/16/11 ND 41.44 --753.81 04/23/12 ND 40.27 --754.98 10/12/12 ND 41.89 --753.36 04/10/13 ND 41.02 --754.23 08/06/13 ND 40.73 --754.52 11/15/13 ND 41.43 --753.82 04/17/14 ND 40.11 --755.14 08/26/14 ND 46.50 --748.75 08/07/15 ND 42.22 --753.03 09/02/15 ND 42.55 --752.70 08/25/16 ND 40.29 --754.96 03/23/17 ND 41.10 --754.15 08/14/17 ND 40.84 --754.41 08/27/18 ND 42.19 --753.06 09/11/18 ND 42.33 --752.92 12/17/18 ND 40.49 --754.76 03/21/19 ND 36.91 --758.34 06/14/19 ND 36.21 --759.04 08/13/19 ND 36.77 --758.48 02/23/20 ND 38.03 --757.22 08/11/20 ND 36.27 --758.98 02/22/21 ND 35.49 --759.76 08/17/21 ND 36.48 --758.77 11/17/21 ND 38.79 --756.46 02/16/22 ND 39.60 --755.65 05/15/22 ND 39.09 --756.16 10/18/22 ND 40.58 --754.67 04/24/23 ND 39.13 --756.12 10/03/23 ND 40.11 --755.14 04/09/24 ND 39.24 --756.01 10/15/24 ND 39.85 --755.40 2W21 795.25 2025_02_20 Tables Page 16 of 22 2/20/2025 AECOM Well ID Date Top of Casing Elevation (feet amsl) Depth to LNAPL (feet btoc) Depth to Groundwater (feet btoc) LNAPL (feet) Corrected Groundwater Elevation¹ (feet amsl) Table 4 Historical Groundwater Elevation Data Products (SE) Pipe Line Corporation - Guilford Greene Site Greensboro, Guilford County, North Carolina 2617 Quaker Landing Road 02/23/05 ND 43.18 --757.84 08/23/05 ND 43.93 --757.09 03/15/06 ND 44.16 --756.86 08/28/06 ND 44.97 --756.05 02/15/07 ND 43.75 --757.27 08/08/07 ND 45.04 --755.98 02/06/08 ND 45.29 --755.73 08/12/08 ND 46.15 --754.87 02/26/09 ND 45.09 --755.93 08/03/09 ND 45.57 --755.45 02/22/10 ND 43.58 --757.44 08/18/10 ND 44.59 --756.43 02/17/11 ND 44.89 --756.13 08/16/11 ND 45.58 --755.44 04/23/12 ND 44.46 --756.56 10/12/12 ND 45.85 --755.17 04/10/13 ND 45.13 --755.89 08/06/13 ND 45.19 --755.83 11/15/13 ND 45.66 --755.36 04/17/14 ND 44.33 --756.69 08/26/14 ND 45.22 --755.80 08/07/15 ND 46.12 --754.90 09/02/15 ND 46.50 --754.52 08/25/16 ND 45.06 --755.96 03/23/17 ND 45.39 --755.63 08/14/17 ND 45.42 --755.60 08/27/18 ND 46.28 --754.74 09/11/18 ND 46.38 --754.64 12/17/18 ND 44.56 --756.46 03/21/19 ND 42.66 --758.36 06/14/19 ND 42.48 --758.54 08/13/19 ND 42.92 --758.10 02/23/20 ND 43.24 --757.78 08/11/20 ND 42.61 --758.41 02/22/21 ND 41.77 --759.25 03/22/21 ND 41.42 --759.60 08/17/21 ND 42.86 --758.16 11/17/21 ND 44.21 --756.81 02/16/22 ND 44.60 --756.42 05/15/22 ND 44.29 --756.73 10/18/22 ND 45.05 --755.97 04/24/23 ND 43.86 --757.16 10/03/23 ND 44.74 --756.28 04/09/24 ND 44.15 --756.87 10/15/24 ND 44.57 --756.45 2W22 801.02 2025_02_20 Tables Page 17 of 22 2/20/2025 AECOM Well ID Date Top of Casing Elevation (feet amsl) Depth to LNAPL (feet btoc) Depth to Groundwater (feet btoc) LNAPL (feet) Corrected Groundwater Elevation¹ (feet amsl) Table 4 Historical Groundwater Elevation Data Products (SE) Pipe Line Corporation - Guilford Greene Site Greensboro, Guilford County, North Carolina 2617 Quaker Landing Road 02/23/05 ND 27.74 --758.70 08/23/05 ND 28.51 --757.93 03/15/06 ND 28.33 --758.11 08/28/06 ND 29.12 --757.32 02/15/07 ND 27.88 --758.56 08/08/07 ND 29.36 --757.08 02/06/08 ND 28.98 --757.46 08/12/08 ND 30.10 --756.34 02/26/09 ND 28.87 --757.57 08/03/09 ND 29.56 --756.88 02/22/10 ND 27.35 --759.09 08/18/10 ND 28.98 --757.46 02/17/11 ND 28.85 --757.59 08/16/11 ND 29.65 --756.79 04/23/12 ND 28.42 --758.02 10/12/12 ND 29.51 --756.93 04/10/13 ND 28.71 --757.73 08/06/13 ND 29.08 --757.36 11/15/13 ND 29.35 --757.09 04/17/14 ND 27.92 --758.52 08/26/14 ND 29.36 --757.08 08/07/15 ND 29.82 --756.62 09/02/15 ND 30.24 --756.20 08/25/16 ND 29.08 --757.36 03/23/17 ND 29.06 --757.38 08/14/17 ND 28.38 --758.06 08/27/18 ND 29.85 --756.59 09/11/18 ND 29.78 --756.66 12/17/18 ND 27.99 --758.45 03/21/19 ND 26.68 --759.76 06/14/19 ND 27.24 --759.20 08/13/19 ND 28.93 --757.51 02/23/20 ND 27.19 --759.25 08/11/20 ND 27.59 --758.85 02/22/21 ND 26.21 --760.23 03/22/21 ND 26.12 --760.32 08/17/21 ND 27.99 --758.45 11/17/21 ND 28.66 --757.78 02/16/22 ND 28.49 --757.95 05/15/22 ND 28.32 --758.12 10/18/22 ND 28.91 --757.53 04/24/23 ND 27.91 --758.53 10/03/23 ND 28.86 --757.58 04/09/24 ND 27.71 --758.73 10/15/24 ND 28.42 --758.02 2W23 786.44 2025_02_20 Tables Page 18 of 22 2/20/2025 AECOM Well ID Date Top of Casing Elevation (feet amsl) Depth to LNAPL (feet btoc) Depth to Groundwater (feet btoc) LNAPL (feet) Corrected Groundwater Elevation¹ (feet amsl) Table 4 Historical Groundwater Elevation Data Products (SE) Pipe Line Corporation - Guilford Greene Site Greensboro, Guilford County, North Carolina 2617 Quaker Landing Road 02/22/21 46.59 47.22 0.63 762.89 06/02/21 45.34 46.58 1.24 764.02 07/19/21 45.25 45.40 0.15 764.33 08/17/21 44.40 44.44 0.04 765.20 09/23/21 ND 44.99 --764.62 11/01/21 ND 46.75 --762.86 11/17/21 ND 46.94 --762.67 12/16/21 ND 48.60 --761.01 02/16/22 ND 48.89 --760.72 05/15/22 ND 49.46 --760.15 10/18/22 ND 50.70 --758.91 04/24/23 ND 47.80 --761.81 10/03/23 ND 47.20 --762.41 04/09/24 ND 52.14 --757.47 10/15/24 ND 51.87 --757.74 02/22/21 43.78 43.86 0.08 762.73 06/02/21 ND 42.84 --763.69 07/19/21 ND 38.33 --768.20 08/17/21 ND 42.50 --764.03 09/23/21 ND 44.40 --762.13 11/01/21 ND 45.90 --760.63 11/17/21 ND 46.76 --759.77 12/16/21 ND 44.94 --761.59 02/16/22 42.25 42.28 0.03 764.27 05/15/22 ND 41.90 --764.63 10/18/22 ND 52.73 --753.80 04/24/23 ND 51.80 --754.73 10/03/23 ND 49.90 --756.63 04/09/24 ND 48.79 --757.74 10/15/24 ND 48.84 --757.69 02/22/21 48.46 49.05 0.59 760.04 06/02/21 47.54 48.22 0.68 760.94 07/19/21 48.02 48.69 0.67 760.47 08/17/21 48.85 49.92 1.07 759.56 09/23/21 48.66 50.21 1.55 759.65 11/01/21 51.51 53.28 1.77 756.76 11/17/21 54.20 54.97 0.77 754.27 12/16/21 56.29 56.32 0.03 752.32 02/16/22 49.73 49.80 0.07 758.88 05/15/22 57.80 57.82 0.02 750.82 10/18/22 ND 55.25 --753.37 04/24/23 ND 54.20 --754.42 10/03/23 ND 52.50 --756.12 04/09/24 ND 53.88 --754.74 10/15/24 ND 56.99 --751.63 2W27 808.62 2W25 809.61 2W26 806.53 2025_02_20 Tables Page 19 of 22 2/20/2025 AECOM Well ID Date Top of Casing Elevation (feet amsl) Depth to LNAPL (feet btoc) Depth to Groundwater (feet btoc) LNAPL (feet) Corrected Groundwater Elevation¹ (feet amsl) Table 4 Historical Groundwater Elevation Data Products (SE) Pipe Line Corporation - Guilford Greene Site Greensboro, Guilford County, North Carolina 2617 Quaker Landing Road 02/22/21 ND 47.15 --762.42 03/22/21 ND 46.95 --762.62 06/02/21 ND 46.55 --763.02 07/19/21 ND 44.81 --764.76 08/17/21 ND 46.79 --762.78 11/01/21 ND 46.45 --763.12 11/17/21 ND 48.49 --761.08 02/16/22 ND 48.66 --760.91 05/15/22 ND 46.74 --762.83 10/18/22 ND 49.30 --760.27 04/24/23 ND 49.12 --760.45 10/03/23 ND 48.50 --761.07 04/09/24 ND 51.36 --758.21 10/15/24 ND 51.58 --757.99 02/22/21 ND 50.46 --757.44 03/22/21 ND 50.20 --757.70 06/02/21 ND 49.71 --758.19 07/19/21 ND 50.12 --757.78 08/17/21 ND 48.07 --759.83 11/01/21 ND 49.48 --758.42 11/17/21 ND 49.93 --757.97 02/16/22 ND 45.65 --762.25 05/15/22 ND 51.48 --756.42 10/18/22 ND 50.92 --756.98 04/24/23 ND 49.73 --758.17 10/03/23 ND 50.24 --757.66 04/09/24 ND 50.96 --756.94 10/15/24 ND 51.00 --756.90 06/08/23 ND 43.64 --757.50 10/03/23 ND 44.42 --756.72 04/09/24 ND 44.13 --757.01 10/15/24 ND 44.54 --756.60 06/08/23 ND 46.20 --757.68 10/03/23 ND 46.84 --757.04 04/09/24 ND 46.96 --756.92 10/15/24 ND 47.40 --756.48 2W28 809.57 2W29 807.90 2W30 801.14 2W31 803.88 2025_02_20 Tables Page 20 of 22 2/20/2025 AECOM Well ID Date Top of Casing Elevation (feet amsl) Depth to LNAPL (feet btoc) Depth to Groundwater (feet btoc) LNAPL (feet) Corrected Groundwater Elevation¹ (feet amsl) Table 4 Historical Groundwater Elevation Data Products (SE) Pipe Line Corporation - Guilford Greene Site Greensboro, Guilford County, North Carolina 2617 Quaker Landing Road 02/22/21 ND 49.26 --760.17 03/22/21 ND 48.48 --760.95 08/17/21 ND 49.87 --759.56 11/17/21 ND 51.36 --758.07 02/16/22 ND 50.72 --758.71 05/15/22 ND 51.48 --757.95 10/18/22 ND 52.54 --756.89 04/24/23 ND 51.23 --758.20 10/03/23 ND 51.91 --757.52 04/09/24 ND 51.94 --757.49 10/15/24 ND 52.28 --757.15 03/23/17 ND 52.51 --756.44 08/14/17 ND 54.20 --754.75 08/27/18 ND 54.13 --754.82 12/17/18 ND 51.66 --757.29 03/21/19 ND 50.05 --758.90 06/14/19 ND 50.00 --758.95 08/13/19 ND 50.05 --758.90 02/23/20 ND 50.42 --758.53 08/11/20 ND 49.84 --759.11 02/22/21 ND 49.04 --759.91 03/22/21 ND 49.04 --759.91 08/17/21 ND 49.84 --759.11 11/17/21 ND 52.96 --755.99 02/16/22 ND 41.52 --767.43 05/15/22 ND 58.52 --750.43 10/18/22 ND 49.90 --759.05 04/24/23 ND 47.92 --761.03 10/03/23 ND 49.60 --759.35 04/09/24 ND 52.74 --756.21 10/15/24 ND 53.69 --755.26 08/11/20 ND 47.38 --763.08 03/22/21 ND 46.41 --764.05 08/17/21 ND 45.92 --764.54 11/17/21 ND 47.51 --762.95 02/16/22 ND 48.51 --761.95 05/15/22 ND 48.93 --761.53 10/18/22 ND Dry --Dry 04/24/23 ND Dry --Dry 10/03/23 ND Dry --Dry 04/09/24 ND Dry --Dry 10/15/24 ND Dry --Dry DW1 809.43 AS1 808.95 AS4 810.46 2025_02_20 Tables Page 21 of 22 2/20/2025 AECOM Well ID Date Top of Casing Elevation (feet amsl) Depth to LNAPL (feet btoc) Depth to Groundwater (feet btoc) LNAPL (feet) Corrected Groundwater Elevation¹ (feet amsl) Table 4 Historical Groundwater Elevation Data Products (SE) Pipe Line Corporation - Guilford Greene Site Greensboro, Guilford County, North Carolina 2617 Quaker Landing Road 08/11/20 ND 36.04 --758.49 03/22/21 ND 33.83 --760.70 08/17/21 ND 35.91 --758.62 11/17/21 ND 37.97 --756.56 02/16/22 ND 38.55 --755.98 05/15/22 ND 38.24 --756.29 10/18/22 ND 40.05 --754.48 04/24/23 ND 38.61 --755.92 10/03/23 ND 39.63 --754.90 04/09/24 ND 39.13 --755.40 10/15/24 ND 39.51 --755.02 08/11/20 ND 38.62 --758.35 03/22/21 ND 36.58 --760.39 08/17/21 ND 38.68 --758.29 11/17/21 ND 40.65 --756.32 02/16/22 ND 41.03 --755.94 05/15/22 ND 40.59 --756.38 10/18/22 ND 42.52 --754.45 04/24/23 ND 41.01 --755.96 10/03/23 ND 42.02 --754.95 04/09/24 ND 41.56 --755.41 10/15/24 ND 41.98 --754.99 08/11/20 ND 47.63 --759.63 03/22/21 ND 46.82 --760.44 08/17/21 ND 47.68 --759.58 11/17/21 ND 49.55 --757.71 02/16/22 ND 50.40 --756.86 05/15/22 ND 50.38 --756.88 10/18/22 ND 50.97 --756.29 04/24/23 ND 49.98 --757.28 10/03/23 ND 50.44 --756.82 04/09/24 ND 50.54 --756.72 10/15/24 ND 50.63 --756.63 Notes: ¹ Corrected Groundwater Elevation=(TOC Elevation-Depth to Groundwater)+(LNAPL Thickness*0.8) Specific Gravity of LNAPL = 0.8 amsl = above mean sea level btoc = below top of casing LNAPL = light non-aqueous phase liquid ND = not detected AS9 794.53 AS10 796.97 AS13 807.26 2025_02_20 Tables Page 22 of 22 2/20/2025 AECOM Well ID Date Top of Casing amsl) Depth to LNAPL (feet btoc) Depth to (feet btoc) LNAPL Thickness (feet) Corrected Groundwater Elevation¹ (feet amsl) 07/31/24 ND 46.15 0.00 761.56 08/29/24 ND 46.90 0.00 760.81 09/30/24 ND 46.30 0.00 761.41 11/19/24 ND 46.25 0.00 761.46 12/30/24 ND 45.95 0.00 761.76 07/31/24 ND 48.85 0.00 760.76 08/29/24 ND 50.05 0.00 759.56 09/30/24 ND 48.05 0.00 761.56 11/19/24 ND 49.05 0.00 760.56 12/30/24 ND 48.55 0.00 761.06 07/31/24 ND 49.20 0.00 757.33 08/29/24 ND 50.75 0.00 755.78 09/30/24 ND 48.55 0.00 757.98 11/19/24 ND Dry 0.00 Dry 12/30/24 ND Dry 0.00 Dry 07/31/24 ND 51.90 0.00 756.72 08/29/24 ND 54.40 0.00 754.22 09/30/24 ND 53.90 0.00 754.72 11/19/24 ND 52.10 0.00 756.52 12/30/24 ND 53.55 0.00 755.07 Notes: amsl = above mean sea level btoc = below top of casing LNAPL = light non-aqueous phase liquid 2W6 807.71 Table 5 LNAPL Gauging Data Products (SE) Pipe Line Corporation - Guilford Greene Site 2617 Quaker Landing Road Greensboro, Guilford County, North Carolina ND = not detected 2W25 809.61 2W26 806.53 2W27 808.62 2025_02_20 Tables Page 1 of 1 2/20/2025 AECOM Well ID Date Benzene Toluene Ethylbenzene Xylenes MTBE 07/01/94 <1.0 <1.0 <1.0 <1.0 <1.0 10/01/94 <1.0 1.0 <1.0 <1.0 <1.0 04/01/95 <1.0 <1.0 <1.0 <1.0 <1.0 10/01/95 <1.0 <1.0 <1.0 <1.0 <1.0 01/01/96 <1.0 3.7 <1.0 2.0 5.6 04/01/96 <1.0 <1.0 <1.0 <1.0 <1.0 07/01/96 <0.5 <1.0 <1.0 <2.0 NA 12/01/96 <0.5 <1.0 <1.0 <2.0 NA 06/01/97 <0.5 <1.0 <1.0 <2.0 NA 08/01/97 <0.5 <1.0 <1.0 <2.0 NA 12/01/97 <1.0 <1.0 <1.0 2.4 NA 03/01/98 <1.0 <1.0 <1.0 <1.0 NA 08/01/98 <1.0 <1.0 <1.0 <1.0 NA 03/01/99 <1.0 <1.0 <1.0 <1.0 <1.0 11/01/01 <1.0 <1.0 <1.0 <2.0 <8.0 08/02/02 <1.0 <1.0 <1.0 <2.0 <1.0 08/03/03 <1.0 <1.0 <1.0 <1.0 <8.0 08/01/04 <1.0 <1.0 <1.0 <1.0 <8.0 08/24/05 <0.2 <0.19 <0.16 <0.29 <0.21 08/28/06 <0.2 <0.19 <0.16 <0.24 <0.21 08/07/07 <0.2 <0.19 <0.16 <0.24 <0.21 08/08/08 <0.2 <0.19 <0.16 0.68 J <0.21 08/03/09 <0.2 <0.37 <0.16 <0.24 <0.21 08/18/10 <0.19 <0.2 <0.18 <0.49 <0.2 08/16/11 <0.19 <0.26 <0.33 <0.2 <0.18 08/12/12 <0.21 <0.27 <0.2 <0.2 <0.2 08/07/13 <0.21 <0.27 0.39 J <0.2 <0.2 08/28/14 <0.21 <0.21 <0.27 <0.63 <0.28 09/02/15 <0.21 <0.21 <0.27 <0.39 <0.28 08/25/16 <0.21 <0.21 <0.27 <0.39 <0.28 08/14/17 <0.21 <0.29 <0.37 <0.39 <0.65 09/11/18 <0.23 <0.23 <0.23 <0.39 <0.21 12/18/18 <0.23 0.87 U <0.23 0.79 J <0.21 03/22/19 <0.23 <0.23 <0.23 <0.39 <0.21 06/19/19 <0.23 0.42 U <0.23 <0.39 <0.21 08/15/19 <0.23 1.8 U <0.23 <0.39 <0.21 08/11/20 <0.23 0.53 U <0.23 <0.39 <0.21 03/22/21 <0.23 <0.23 <0.23 <0.39 <0.21 08/17/21 <0.23 0.71 U <0.23 <0.39 <0.21 11/18/21 <0.23 <0.23 <0.23 <0.39 <0.21 02/17/22 <0.23 <0.23 <0.23 <0.39 <0.21 05/15/22 <0.23 <0.23 <0.23 <0.39 <0.21 10/19/22 <0.23 <0.23 <0.23 <0.39 <0.21 04/24/23 <0.23 <0.23 <0.23 <0.39 <0.21 10/03/23 <0.23 0.24 U <0.23 <0.39 <0.21 04/10/24 <0.31 <0.30 <0.36 <0.72 <0.23 10/15/24 <0.31 <0.30 <0.36 <0.72 <0.23 NC 2L GW Standard Table 7 Historical Groundwater Analytical Results Products (SE) Pipe Line Corporation - Guilford Greene Site 2617 Quaker Landing Road Greensboro, Guilford County, North Carolina 2W1 2025_02_20 Tables Page 1 of 20 2/20/2025 AECOM Well ID Date Benzene Toluene Ethylbenzene Xylenes MTBE NC 2L GW Standard Table 7 Historical Groundwater Analytical Results Products (SE) Pipe Line Corporation - Guilford Greene Site 2617 Quaker Landing Road Greensboro, Guilford County, North Carolina 01/01/94 <1.0 <1.0 <1.0 <1.0 <1.0 04/01/94 <1.0 <1.0 <1.0 <1.0 <1.0 10/01/94 <1.0 4.0 <1.0 6.0 <1.0 04/01/95 <1.0 <1.0 <1.0 <1.0 <1.0 04/01/96 <1.0 <1.0 <1.0 <1.0 <1.0 07/01/96 <0.5 <1.0 <1.0 <2.0 NA 12/01/96 <0.5 <1.0 <1.0 <2.0 NA 08/01/98 <1.0 <1.0 <1.0 <1.0 NA 03/01/99 <1.0 <1.0 <1.0 <1.0 <1.0 03/01/00 <1.0 <1.0 <1.0 <1.0 <8.0 08/01/00 <1.0 <1.0 <1.0 <1.0 <8.0 02/01/01 <1.0 <1.0 <1.0 <1.0 <8.0 11/01/01 <1.0 <1.0 <1.0 <2.0 <8.0 08/02/02 <1.0 <1.0 <1.0 <2.0 <1.0 08/03/03 <1.0 <1.0 <1.0 <1.0 <8.0 08/01/04 <1.0 <1.0 <1.0 <1.0 <8.0 08/24/05 <0.2 <0.19 <0.16 <0.29 <0.21 08/28/06 <0.2 <0.19 <0.16 <0.24 <0.21 08/07/07 <0.2 <0.19 <0.16 <0.24 <0.21 08/08/08 <0.2 <0.19 <0.16 <0.24 <0.21 08/03/09 <0.2 <0.37 <0.16 <0.24 <0.21 08/18/10 <0.19 <0.2 <0.18 <0.49 <0.2 08/16/11 <0.19 <0.26 <0.33 <0.2 <0.18 08/12/12 <0.21 0.39 J <0.2 0.9 J <0.2 08/07/13 <0.21 <0.27 <0.2 <0.2 <0.2 08/27/14 <0.21 <0.21 <0.27 <0.63 <0.28 09/02/15 <0.21 <0.21 <0.27 <0.39 <0.28 08/25/16 <0.21 <0.21 <0.27 <0.39 <0.28 08/15/17 <0.21 <0.29 <0.37 <0.39 <0.65 09/11/18 <0.23 <0.23 <0.23 <0.39 <0.21 12/18/18 <0.23 <0.23 <0.23 <0.39 <0.21 03/22/19 <0.23 <0.23 <0.23 <0.39 <0.21 06/19/19 <0.23 0.35 U <0.23 <0.39 <0.21 08/14/19 <0.23 0.75 U <0.23 <0.39 <0.21 08/11/20 <0.23 0.47 U <0.23 <0.39 <0.21 03/22/21 <0.23 <0.23 <0.23 <0.39 <0.21 08/17/21 <0.23 1.6 U <0.23 1.2 U <0.21 11/18/21 <0.23 <0.23 <0.23 <0.39 <0.21 02/16/22 <0.23 <0.23 <0.23 <0.39 <0.21 05/15/22 <0.23 <0.23 <0.23 <0.39 <0.21 10/19/22 <0.23 <0.23 <0.23 <0.39 <0.21 04/24/23 <0.23 <0.23 <0.23 <0.39 <0.21 10/03/23 <0.23 0.29 U <0.23 <0.39 <0.21 04/10/24 <0.31 <0.30 <0.36 <0.72 <0.23 10/15/24 <0.31 <0.30 <0.36 <0.72 <0.23 2W3 2025_02_20 Tables Page 2 of 20 2/20/2025 AECOM Well ID Date Benzene Toluene Ethylbenzene Xylenes MTBE NC 2L GW Standard Table 7 Historical Groundwater Analytical Results Products (SE) Pipe Line Corporation - Guilford Greene Site 2617 Quaker Landing Road Greensboro, Guilford County, North Carolina 07/01/95 <1.0 <1.0 <1.0 <1.0 10 10/01/95 3.8 3.5 <1.0 1.8 26 01/01/96 2.1 1.5 <1.0 <1.0 5.7 07/01/96 2.6 1.6 <1.0 <2.0 NA 12/01/96 <0.5 <1.0 <1.0 <2.0 NA 06/01/97 1.0 3.0 <1.0 5.5 NA 08/01/97 <0.5 <1.0 <1.0 <2.0 NA 12/01/97 <1.0 <1.0 <1.0 <1.0 NA 03/01/98 <1.0 <1.0 <1.0 <1.0 NA 08/01/98 <1.0 <1.0 <1.0 <1.0 NA 03/01/99 1.4 18 <1.0 28 <1.0 08/01/99 <1.0 <1.0 <1.0 <1.0 <8.0 03/01/00 <1.0 <1.0 <1.0 <1.0 <8.0 08/01/00 <1.0 <1.0 <1.0 <1.0 58 02/01/01 <1.0 <1.0 <1.0 <1.0 <8.0 11/01/01 <1.0 <1.0 <1.0 <2.0 <8.0 08/03/03 <2.2 <1.0 <1.0 12 2.4 J 08/01/04 <1.0 <1.0 <1.0 <1.0 <8.0 08/24/05 <0.2 <0.19 <0.16 1.0 J 3.7 08/28/06 <0.2 <0.19 <0.16 <0.24 2.8 08/07/07 <0.2 <0.19 <0.16 <0.24 4.0 08/08/08 <0.2 <0.19 <0.16 <0.24 4.7 08/03/09 <0.2 <0.37 <0.16 <0.24 4.6 J 08/18/10 <0.19 <0.2 <0.18 <0.49 1.4 08/16/11 <0.19 <0.26 <0.33 <0.2 2.8 08/12/12 <0.21 0.63 J <0.2 1.25 J 0.82 J 08/07/13 <0.21 <0.27 <0.2 <0.2 <0.2 08/27/14 <0.21 <0.21 <0.27 <0.63 <0.28 09/03/15 <0.21 <0.21 <0.27 <0.39 <0.28 08/25/16 <0.21 <0.21 <0.27 <0.39 <0.28 08/15/17 <0.21 <0.29 <0.37 <0.39 <0.65 09/11/18 <0.23 <0.23 <0.23 <0.39 <0.21 12/18/18 <0.23 <0.23 <0.23 <0.39 <0.21 03/22/19 <0.23 <0.23 <0.23 <0.39 <0.21 06/19/19 <0.23 <0.23 <0.23 <0.39 <0.21 08/14/19 <0.23 0.45 U <0.23 0.59 J <0.21 08/11/20 <0.23 0.44 U <0.23 <0.39 <0.21 03/22/21 <0.23 <0.23 <0.23 <0.39 <0.21 08/17/21 <0.23 0.98 U <0.23 <0.39 <0.21 11/18/21 32.1 2.3 0.87 J 6 0.86 J 02/17/22 12.6 0.47 J 0.42 J 3.2 90.2 05/15/22 33.3 0.33 U <0.23 4.3 286 10/19/22 50.2 2.2 J <1.1 9.7 J 745 04/24/23 4.6 <0.23 <0.23 1.5 J 742 10/04/23 4.1 0.28 U <0.23 3.4 694 04/10/24 <0.31 <0.30 <0.36 <0.72 511 10/15/24 <1.6 <1.5 <1.8 <3.6 227 2W4 2025_02_20 Tables Page 3 of 20 2/20/2025 AECOM Well ID Date Benzene Toluene Ethylbenzene Xylenes MTBE NC 2L GW Standard Table 7 Historical Groundwater Analytical Results Products (SE) Pipe Line Corporation - Guilford Greene Site 2617 Quaker Landing Road Greensboro, Guilford County, North Carolina 10/19/22 9.3 J 2,570 J 3,270 J 12,500 J <0.21 UJ 04/25/23 2.1 J 50.1 59.7 2,120 <1.0 10/04/23 0.48 J 2.4 U 2.3 44.9 0.90 J 04/10/24 2.2 172 101 2,740 <1.1 10/15/24 <1.6 57 141 1,980 <1.1 2W6 2025_02_20 Tables Page 4 of 20 2/20/2025 AECOM Well ID Date Benzene Toluene Ethylbenzene Xylenes MTBE NC 2L GW Standard Table 7 Historical Groundwater Analytical Results Products (SE) Pipe Line Corporation - Guilford Greene Site 2617 Quaker Landing Road Greensboro, Guilford County, North Carolina 04/01/94 <1.0 <1.0 <1.0 <1.0 <1.0 07/01/94 <1.0 <1.0 <1.0 <1.0 <1.0 10/01/94 1.0 <1.0 <1.0 <1.0 4.0 07/01/96 3.3 <1.0 <1.0 <2.0 NA 12/01/96 <0.5 <1.0 <1.0 <2.0 NA 06/01/97 0.9 6.4 1.3 9.9 NA 08/01/97 <0.5 <1.0 <1.0 <2.0 NA 12/01/97 <1.0 <1.0 <1.0 <1.0 NA 03/01/98 <1.0 <1.0 <1.0 <1.0 NA 08/01/98 <1.0 <1.0 <1.0 1.1 NA 03/01/99 <1.0 <1.0 <1.0 <1.0 2.3 08/01/99 <1.0 <1.0 <1.0 <1.0 9.9 03/01/00 <1.0 <1.0 <1.0 <1.0 40 08/01/00 <1.0 <1.0 <1.0 <1.0 94 02/01/01 <1.0 <1.0 <1.0 <1.0 11 J 08/02/02 <1.0 <1.0 <1.0 <2.0 3.8 08/03/03 <1.0 <1.0 <1.0 <1.0 15 08/01/04 <1.0 <1.0 <1.0 <1.0 <8.0 08/24/05 <0.2 <0.19 <0.16 <0.29 0.8 J 08/28/06 <0.2 <0.19 <0.16 <0.24 0.64 J 08/07/07 <0.2 <0.19 <0.16 <0.24 1.8 08/08/08 <0.2 <0.19 <0.16 <0.24 <0.21 08/04/09 <0.2 <0.37 <0.16 0.7 J 0.82 J 08/18/10 <0.19 <0.2 <0.18 <0.49 0.96 J 08/16/11 <0.19 <0.26 <0.33 <0.2 0.8 J 08/14/12 <0.21 0.37 J <0.2 0.54 J 0.59 J 08/07/13 <0.21 <0.27 <0.2 <0.2 <0.2 08/27/14 <0.21 <0.21 <0.27 <0.63 <0.28 09/03/15 0.62 U 0.49 U <0.27 0.52 J 0.31 J 08/25/16 <0.21 <0.21 <0.27 <0.39 0.65 J 08/15/17 <0.21 <0.29 <0.37 <0.39 <0.65 09/11/18 <0.23 <0.23 <0.23 <0.39 0.35 J 08/14/19 <0.23 1.2 U <0.23 <0.39 0.23 J 08/11/20 <0.23 0.42 U <0.23 <0.39 <0.21 03/22/21 <0.23 <0.23 <0.23 <0.39 <0.21 08/17/21 <0.23 1.3 U <0.23 <0.39 <0.21 11/18/21 17.6 25.8 2.4 9.4 <0.21 02/17/22 2.0 9.2 1.6 9.0 0.55 J 05/15/22 12.5 52.5 6.0 33.4 7.5 10/19/22 1.7 12.5 3.0 19.7 8.7 04/24/23 0.98 J 32.2 16.1 113 11.0 10/04/23 0.37 J 10.7 6.1 47.3 11.4 04/10/24 <0.31 <0.30 <0.36 <0.72 3.4 10/15/24 <0.31 0.64 U <0.36 1.0 J 8.5 2W7 2025_02_20 Tables Page 5 of 20 2/20/2025 AECOM Well ID Date Benzene Toluene Ethylbenzene Xylenes MTBE NC 2L GW Standard Table 7 Historical Groundwater Analytical Results Products (SE) Pipe Line Corporation - Guilford Greene Site 2617 Quaker Landing Road Greensboro, Guilford County, North Carolina 01/01/94 1.0 1.0 <1.0 4.0 2.0 04/01/94 <1.0 2.0 <1.0 2.0 <1.0 07/01/94 <1.0 <1.0 <1.0 <1.0 4.0 10/01/94 <1.0 <1.0 <1.0 <1.0 <1.0 04/01/95 <1.0 <1.0 <1.0 <1.0 <1.0 07/01/95 <1.0 <1.0 <1.0 <1.0 1.5 07/01/96 <0.5 <1.0 <1.0 <2.0 NA 07/01/97 1.3 10 1.1 10 NA 08/01/97 <0.5 <1.0 <1.0 <2.0 NA 12/01/97 <1.0 <1.0 <1.0 <1.0 NA 03/01/98 <1.0 <1.0 <1.0 <1.0 NA 08/02/02 <1.0 <1.0 <1.0 <2.0 <1.0 08/03/03 <1.0 <1.0 <1.0 <1.0 <8.0 08/01/04 <1.0 <1.0 <1.0 <1.0 <8.0 08/24/05 <0.2 <0.19 <0.16 <0.29 <0.21 08/28/06 <0.2 <0.19 <0.16 <0.24 <0.21 08/07/07 <0.2 <0.19 <0.16 <0.24 <0.21 08/08/08 <0.2 <0.19 <0.16 0.54 J <0.21 08/03/09 <0.2 <0.37 <0.16 <0.24 <0.21 08/18/10 <0.19 <0.2 <0.18 <0.49 <0.2 08/16/11 <0.19 <0.26 <0.33 <0.2 <0.18 08/14/12 <0.21 <0.27 <0.2 <0.2 <0.2 08/07/13 <0.21 <0.27 <0.2 <0.2 <0.2 08/27/14 <0.21 <0.21 <0.27 <0.63 <0.28 08/25/16 <0.21 <0.21 <0.27 <0.39 <0.28 08/15/17 <0.21 <0.29 <0.37 <0.39 <0.65 08/14/19 <0.23 1.5 U <0.23 <0.39 <0.21 2W8 2025_02_20 Tables Page 6 of 20 2/20/2025 AECOM Well ID Date Benzene Toluene Ethylbenzene Xylenes MTBE NC 2L GW Standard Table 7 Historical Groundwater Analytical Results Products (SE) Pipe Line Corporation - Guilford Greene Site 2617 Quaker Landing Road Greensboro, Guilford County, North Carolina 04/01/94 72 160 16 380 210 07/01/94 220 320 25 560 300 10/01/94 1,200 14,000 2,500 22,000 710 07/01/96 <0.5 <1.0 <1.0 <2.0 NA 12/01/96 1,600 730 83 700 NA 06/01/97 <50 1,900 600 8,900 NA 08/01/97 3.8 61 21 530 NA 12/01/97 <1.0 3.3 <1.0 16 NA 03/01/98 <1.0 <1.0 <1.0 1.1 NA 08/01/99 <1.0 <1.0 <1.0 1.0 <8.0 03/01/00 <1.0 <1.0 <1.0 <1.0 <8.0 08/01/00 1.9 7.9 8.6 34.0 <8.0 08/28/06 <0.2 <0.19 <0.16 <0.24 <0.21 08/08/08 <0.2 <0.19 <0.16 <0.24 <0.21 08/03/09 <0.2 <0.37 <0.16 <0.24 <0.21 08/18/10 <0.19 <0.2 <0.18 <0.49 <0.2 08/16/11 <0.19 <0.26 <0.33 <0.2 <0.18 08/14/12 <0.21 <0.27 <0.2 <0.2 <0.2 08/25/16 <0.21 <0.21 <0.27 1.2 J <0.28 08/11/20 <0.23 0.47 U <0.23 <0.39 <0.21 UJ 03/22/21 <0.23 <0.23 <0.23 <0.39 <0.21 08/18/21 <0.23 0.69 U <0.23 <0.39 <0.21 11/18/21 <0.23 <0.23 <0.23 <0.39 <0.21 02/17/22 <0.23 <0.23 <0.23 <0.39 <0.21 05/15/22 <0.23 <0.23 <0.23 <0.39 <0.21 10/19/22 <0.23 <0.23 <0.23 <0.39 UJ <0.21 2W9 2025_02_20 Tables Page 7 of 20 2/20/2025 AECOM Well ID Date Benzene Toluene Ethylbenzene Xylenes MTBE NC 2L GW Standard Table 7 Historical Groundwater Analytical Results Products (SE) Pipe Line Corporation - Guilford Greene Site 2617 Quaker Landing Road Greensboro, Guilford County, North Carolina 01/01/94 <1.0 <1.0 <1.0 <1.0 <1.0 04/01/96 <1.0 <1.0 <1.0 <1.0 <1.0 07/01/96 <0.5 <1.0 <1.0 <2.0 NA 08/01/98 <1.0 <1.0 <1.0 <1.0 NA 03/01/99 <1.0 <1.0 <1.0 <1.0 <1.0 08/01/99 <1.0 <1.0 <1.0 <1.0 <8.0 03/01/00 <1.0 <1.0 <1.0 <1.0 <8.0 08/01/00 <1.0 <1.0 <1.0 <1.0 <8.0 02/01/01 <1.0 <1.0 <1.0 <2.0 <8.0 11/01/01 <1.0 <1.0 <1.0 <2.0 <8.0 08/02/02 <1.0 <1.0 <1.0 <2.0 <1.0 08/03/03 <1.0 <1.0 <1.0 <1.0 <8.0 08/01/04 <1.0 <1.0 <1.0 <1.0 <8.0 08/24/05 <0.2 <0.19 <0.16 <0.29 <0.21 08/28/06 <0.2 <0.19 <0.16 <0.24 <0.21 08/07/07 <0.2 <0.19 <0.16 <0.24 <0.21 08/08/08 <0.2 <0.19 <0.16 <0.24 <0.21 08/03/09 <0.2 <0.37 <0.16 <0.24 <0.21 08/18/10 <0.19 <0.2 <0.18 <0.49 <0.2 08/16/11 <0.19 <0.26 <0.33 <0.2 <0.18 08/14/12 <0.21 <0.27 <0.2 <0.2 <0.2 08/07/13 <0.21 <0.27 <0.2 <0.2 <0.2 08/28/14 <0.21 <0.21 <0.27 <0.63 <0.28 08/25/16 <0.21 <0.21 <0.27 <0.39 <0.28 08/14/17 <0.21 0.31 U <0.37 <0.39 <0.65 08/14/19 <0.23 1.7 U <0.23 <0.39 <0.21 08/11/20 <0.23 0.52 U <0.23 <0.39 <0.21 03/23/21 <0.23 <0.23 <0.23 <0.39 <0.21 08/17/21 <0.23 0.71 U <0.23 <0.39 <0.21 11/18/21 <0.23 <0.23 <0.23 <0.39 <0.21 02/17/22 <0.23 <0.23 <0.23 <0.39 <0.21 05/15/22 <0.23 <0.23 <0.23 <0.39 <0.21 10/19/22 <0.23 <0.23 <0.23 0.58 J <0.21 2W10 2025_02_20 Tables Page 8 of 20 2/20/2025 AECOM Well ID Date Benzene Toluene Ethylbenzene Xylenes MTBE NC 2L GW Standard Table 7 Historical Groundwater Analytical Results Products (SE) Pipe Line Corporation - Guilford Greene Site 2617 Quaker Landing Road Greensboro, Guilford County, North Carolina 04/01/94 270 150 6.0 170 98 07/01/94 400 150 <1.0 190 130 12/01/96 <0.5 <1.0 <1.0 <2.0 NA 06/01/97 4.5 3.1 1.1 7.2 NA 03/01/98 470 330 180 710 NA 08/25/16 <0.21 <0.21 <0.27 <0.39 0.99 J 08/15/17 <0.21 0.42 U 2.5 3.9 1.5 09/11/18 <0.23 <0.23 <0.23 <0.39 0.43 J 08/14/19 <0.23 0.26 U <0.23 <0.39 <0.21 08/11/20 <0.23 10.1 49.1 135 <0.21 03/23/21 1.4 100 653 2,250 <0.21 08/18/21 <0.23 10.2 U 44.5 252 <0.21 11/18/21 <0.23 0.28 U 7.6 26.9 <0.21 02/16/22 <0.23 0.36 J 5 16.2 0.25 J 05/16/22 <0.23 0.40 U 5.8 14.1 0.42 J 10/19/22 <0.23 <0.23 0.28 J 1.0 J 0.26 J 04/24/23 <0.23 <0.23 <0.23 <0.39 <0.21 10/04/23 <0.23 0.25 U <0.23 <0.39 <0.21 04/10/24 <0.31 <0.30 <0.36 <0.72 <0.23 10/15/24 <0.31 <0.30 <0.36 <0.72 <0.23 01/01/94 <1.0 <1.0 <1.0 <1.0 <1.0 04/01/94 1.0 <1.0 <1.0 <1.0 <1.0 10/01/94 <1.0 <1.0 <1.0 <1.0 <1.0 04/01/95 <1.0 <1.0 <1.0 <1.0 <1.0 07/01/96 <0.5 <1.0 <1.0 <2.0 NA 03/01/99 <1.0 <1.0 <1.0 <1.0 <1.0 08/02/02 <1.0 <1.0 <1.0 <2.0 <1.0 08/03/03 <1.0 <1.0 <1.0 <1.0 <8.0 08/01/04 <1.0 <1.0 <1.0 <1.0 <8.0 08/24/05 <0.2 <0.19 <0.16 <0.29 <0.21 08/28/06 <0.2 <0.19 <0.16 <0.24 <0.21 08/07/07 <0.2 <0.19 <0.16 <0.24 <0.21 08/08/08 <0.2 <0.19 <0.16 <0.24 <0.21 08/03/09 <0.2 <0.37 <0.16 <0.24 <0.21 08/18/10 <0.19 <0.2 <0.18 <0.49 <0.2 08/16/11 <0.19 <0.26 <0.33 <0.2 <0.18 08/14/12 <0.21 <0.27 <0.2 <0.2 <0.2 08/07/13 <0.21 <0.27 <0.2 <0.2 <0.2 08/27/14 <0.21 <0.21 <0.27 <0.63 <0.28 09/02/15 <0.21 <0.21 <0.27 <0.39 <0.28 08/25/16 <0.21 <0.21 <0.27 <0.39 <0.28 08/14/17 <0.21 <0.29 <0.37 <0.39 <0.65 09/11/18 <0.23 <0.23 <0.23 <0.39 <0.21 08/14/19 <0.23 1.5 U <0.23 <0.39 <0.21 2W12 2W11 2025_02_20 Tables Page 9 of 20 2/20/2025 AECOM Well ID Date Benzene Toluene Ethylbenzene Xylenes MTBE NC 2L GW Standard Table 7 Historical Groundwater Analytical Results Products (SE) Pipe Line Corporation - Guilford Greene Site 2617 Quaker Landing Road Greensboro, Guilford County, North Carolina 04/01/94 <1.0 <1.0 <1.0 <1.0 <1.0 07/01/94 <1.0 <1.0 <1.0 <1.0 <1.0 10/01/94 <1.0 2.0 <1.0 6.0 2.0 07/01/95 <1.0 <1.0 <1.0 <1.0 <1.0 07/01/96 <0.5 <1.0 <1.0 <2.0 NA 12/01/96 <0.5 <1.0 <1.0 <2.0 NA 06/01/97 <0.5 <1.0 <1.0 <2.0 NA 08/01/97 <0.5 <1.0 <1.0 <2.0 NA 03/01/98 <1.0 <1.0 1.2 3.2 NA 08/01/98 <1.0 <1.0 <1.0 <1.0 NA 03/01/99 <1.0 <1.0 <1.0 <1.0 41 08/03/03 <1.0 <1.0 <1.0 <1.0 1.4 J 08/01/04 <1.0 <1.0 <1.0 <1.0 <8.0 08/24/05 <0.2 <0.19 <0.16 1.2 3.8 08/28/06 <0.2 <0.19 <0.16 <0.24 3.9 08/07/07 <0.2 <0.19 <0.16 <0.24 5.3 08/08/08 <0.2 <0.19 <0.16 <0.24 4.8 08/04/09 <0.2 <0.37 <0.16 <0.24 6.1 08/18/10 <0.19 <0.2 <0.18 <0.49 7.3 08/16/11 <0.19 <0.26 <0.33 <0.2 4.8 08/14/12 <0.21 <0.27 <0.2 <0.2 3.4 J 08/07/13 <0.21 <0.27 <0.2 <0.2 2.8 08/28/14 <0.21 <0.21 <0.27 <0.63 2.8 09/02/15 0.3 U 0.23 U <0.27 <0.39 1.6 08/25/16 <0.21 <0.21 <0.27 <0.39 1.1 08/14/17 <0.21 <0.29 <0.37 <0.39 0.77 J 09/11/18 <0.23 <0.23 <0.23 <0.39 0.64 J 12/18/18 <0.23 <0.23 <0.23 <0.39 0.35 J 08/14/19 <0.23 0.51 U <0.23 <0.39 0.23 J 02/23/20 <0.23 1.4 <0.23 <0.39 0.30 J 08/11/20 <0.23 0.50 U <0.23 <0.39 0.24 J 03/23/21 <0.23 <0.23 <0.23 <0.39 0.22 J 08/17/21 <0.23 0.62 U <0.23 <0.39 0.30 J 11/18/21 <0.23 <0.23 <0.23 <0.39 <0.21 02/16/22 <0.23 <0.23 <0.23 <0.39 <0.21 05/15/22 <0.23 <0.23 <0.23 <0.39 <0.21 10/19/22 <0.23 <0.23 <0.23 <0.39 <0.21 UJ 04/24/23 <0.23 <0.23 <0.23 <0.39 <0.21 10/03/23 <0.23 <0.23 <0.23 <0.39 <0.21 04/10/24 <0.31 <0.30 <0.36 <0.72 <0.23 10/15/24 <0.31 <0.30 <0.36 <0.72 <0.23 2W13 2025_02_20 Tables Page 10 of 20 2/20/2025 AECOM Well ID Date Benzene Toluene Ethylbenzene Xylenes MTBE NC 2L GW Standard Table 7 Historical Groundwater Analytical Results Products (SE) Pipe Line Corporation - Guilford Greene Site 2617 Quaker Landing Road Greensboro, Guilford County, North Carolina 04/01/94 2,700 16,000 1,500 7,700 1,200 07/01/94 2,300 17,000 1,100 7,600 <QL 01/01/96 1,100 9,700 1,100 8,200 180 12/01/96 870 6,600 500 9,200 NA 12/01/97 610 380 8,000 3,900 NA 08/01/98 550 12,000 660 5,700 NA 03/01/99 91 1,300 66 2,900 <50 08/01/99 34 570 22 1,800 <80 03/01/00 80 2,100 57 2,100 72 08/01/00 190 5,800 320 3,600 <80 02/01/01 97 3,100 170 2,500 120 11/01/01 180 3,300 1,100 1,640 <80 02/23/20 91.6 198 36.1 1,040 1.4 J 08/11/20 170 348 60.5 1,360 2.0 J 03/23/21 182 316 67.8 1,260 1.5 J 08/18/21 215 396 99.8 1,210 <1.0 11/18/21 6.5 11.9 10.2 352 <0.21 02/17/22 2.1 2.2 2.6 77.2 <0.21 05/16/22 1.1 1.1 U 1.2 32.5 <0.21 10/19/22 <0.23 <0.23 <0.23 2.4 <0.21 04/24/23 <0.23 0.26 U <0.23 1.8 J <0.21 10/04/23 <0.23 <0.23 <0.23 <0.39 <0.21 04/10/24 <0.31 0.52 J <0.36 <0.72 <0.23 10/15/24 0.54 J 0.84 U 0.40 J 1.6 J <0.23 2W14 2025_02_20 Tables Page 11 of 20 2/20/2025 AECOM Well ID Date Benzene Toluene Ethylbenzene Xylenes MTBE NC 2L GW Standard Table 7 Historical Groundwater Analytical Results Products (SE) Pipe Line Corporation - Guilford Greene Site 2617 Quaker Landing Road Greensboro, Guilford County, North Carolina 01/01/94 <1.0 <1.0 <1.0 <1.0 <1.0 04/01/94 1.0 4.0 1.0 5.0 <1.0 07/01/94 <1.0 <1.0 <1.0 <1.0 <1.0 10/01/94 <1.0 <1.0 <1.0 <1.0 <1.0 04/01/95 <1.0 <1.0 <1.0 <1.0 <1.0 10/01/95 <1.0 <1.0 <1.0 <1.0 <1.0 07/01/95 <1.0 <1.0 <1.0 <1.0 <1.0 01/01/96 <1.0 <1.0 <1.0 <1.0 <1.0 07/01/96 <0.5 <1.0 <1.0 <2.0 NA 12/01/96 <0.5 <1.0 <1.0 <2.0 NA 06/01/97 <0.5 <1.0 <1.0 <2.0 NA 08/01/97 <0.5 <1.0 <1.0 <2.0 NA 12/01/97 <1.0 <1.0 <1.0 <1.0 NA 03/01/98 <1.0 <1.0 <1.0 <1.0 NA 08/01/98 <1.0 <1.0 <1.0 <1.0 NA 03/01/99 <1.0 <1.0 <1.0 <1.0 <1.0 08/01/99 <1.0 <1.0 <1.0 <1.0 <8.0 02/01/01 <1.0 <1.0 <1.0 <1.0 <8.0 11/01/01 <1.0 <1.0 <1.0 12 <8.0 08/02/02 <1.0 <1.0 <1.0 6.6 <1.0 08/03/03 <1.0 <1.0 <1.0 <1.0 <8.0 08/01/04 <1.0 <1.0 <1.0 <1.0 <8.0 08/24/05 <0.2 <0.19 <0.16 <0.29 <0.21 08/28/06 <0.2 <0.19 <0.16 <0.24 <0.21 08/07/07 <0.2 <0.19 <0.16 <0.24 <0.21 08/08/08 <0.2 <0.19 <0.16 <0.24 <0.21 08/03/09 <0.2 <0.37 <0.16 <0.24 <0.21 08/18/10 <0.19 <0.2 <0.18 <0.49 <0.2 08/16/11 <0.19 <0.26 <0.33 <0.2 <0.18 08/14/12 <0.21 <0.27 <0.2 <0.2 <0.2 08/07/13 <0.21 <0.27 <0.2 <0.2 <0.2 08/27/14 <0.21 <0.21 <0.27 <0.63 <0.28 09/02/15 <0.21 <0.21 <0.27 <0.39 <0.28 08/25/16 <0.21 <0.21 0.63 J 3.6 <0.28 08/14/17 <0.21 0.29 U <0.37 <0.39 <0.65 09/11/18 <0.23 <0.23 <0.23 <0.39 <0.21 08/14/19 <0.23 0.94 U <0.23 <0.39 <0.21 08/12/20 <0.23 0.27 U <0.23 <0.39 <0.21 03/23/21 <0.23 <0.23 <0.23 0.51 J <0.21 08/18/21 <0.23 0.76 U <0.23 0.57 U <0.21 11/18/21 <0.23 <0.23 <0.23 0.75 J <0.21 02/16/22 <0.23 <0.23 <0.23 <0.39 <0.21 05/15/22 <0.23 UJ <0.23 UJ <0.23 UJ <0.39 UJ <0.21 UJ 10/19/22 <0.23 <0.23 <0.23 <0.39 <0.21 2W17 2025_02_20 Tables Page 12 of 20 2/20/2025 AECOM Well ID Date Benzene Toluene Ethylbenzene Xylenes MTBE NC 2L GW Standard Table 7 Historical Groundwater Analytical Results Products (SE) Pipe Line Corporation - Guilford Greene Site 2617 Quaker Landing Road Greensboro, Guilford County, North Carolina 04/01/95 <1.0 <1.0 <1.0 <1.0 <1.0 07/01/95 <1.0 <1.0 <1.0 <1.0 <1.0 10/01/95 <1.0 <1.0 <1.0 <1.0 <1.0 01/01/96 <1.0 <1.0 <1.0 <1.0 1.3 04/01/96 <1.0 <1.0 <1.0 <1.0 <1.0 07/01/96 <0.5 <1.0 <1.0 <2.0 NA 12/01/96 <0.5 <1.0 <1.0 <2.0 NA 06/01/97 <0.5 <1.0 <1.0 <2.0 NA 08/01/97 <0.5 <1.0 <1.0 <2.0 NA 12/01/97 <1.0 <1.0 <1.0 <1.0 NA 03/01/98 <1.0 <1.0 <1.0 <1.0 NA 08/01/98 <1.0 <1.0 <1.0 <1.0 NA 03/01/99 <1.0 <1.0 <1.0 4.2 <1.0 08/01/99 <1.0 <1.0 <1.0 3.1 <8.0 02/01/01 <1.0 1.6 <1.0 15 <8.0 11/01/01 <1.0 <1.0 <1.0 24 <8.0 08/02/02 <1.0 3.8 <1.0 199 <1.0 08/03/03 <1.0 <1.0 <1.0 <1.0 <8.0 08/01/04 <1.0 <1.0 <1.0 1.6 <8.0 08/24/05 <0.2 <0.19 <0.16 1.4 <0.21 08/28/06 <0.2 0.78 J <0.16 88 <0.21 08/07/07 0.52 J 5.3 1.4 238 <0.21 08/08/08 4.4 54 24 1,880 <0.21 08/03/09 4.1 J 38 8.1 J 1,330 <1.0 08/18/10 1.5 U <0.2 0.32 J 93 <0.2 08/16/11 11 0.32 J <0.33 0.35 J <0.18 08/14/12 5.8 <0.27 <0.2 0.44 J <0.2 08/07/13 7.9 <0.27 <0.2 <0.2 <0.2 08/27/14 <0.21 <0.21 <0.27 <0.63 <0.28 09/02/15 82.9 1.6 0.7 J 2.0 0.79 J 08/14/17 <0.21 <0.29 <0.37 <0.39 <0.65 09/11/18 24.1 0.34 J <0.23 0.5 J 9.0 12/18/18 252 4 1.1 5.3 9.7 03/22/19 <1.1 <1.1 <1.1 <2.0 <1.0 06/19/19 <0.23 0.34 U <0.23 <0.39 <0.21 08/15/19 <0.23 0.62 U <0.23 <0.39 <0.21 08/12/20 <0.23 0.37 U <0.23 <0.39 <0.21 03/23/21 <0.23 <0.23 <0.23 0.65 J <0.21 08/18/21 <0.23 0.84 U <0.23 <0.39 <0.21 11/18/21 <0.23 <0.23 <0.23 <0.39 <0.21 02/16/22 <0.23 <0.23 <0.23 <0.39 <0.21 05/15/22 <0.23 <0.23 <0.23 <0.39 <0.21 10/19/22 <0.23 <0.23 <0.23 <0.39 <0.21 04/24/23 <0.23 <0.23 <0.23 <0.39 <0.21 10/04/23 <0.23 0.28 U <0.23 <0.39 <0.21 04/10/24 <0.31 <0.30 <0.36 <0.72 <0.23 10/15/24 <0.31 <0.30 <0.36 <0.72 <0.23 2W18 2025_02_20 Tables Page 13 of 20 2/20/2025 AECOM Well ID Date Benzene Toluene Ethylbenzene Xylenes MTBE NC 2L GW Standard Table 7 Historical Groundwater Analytical Results Products (SE) Pipe Line Corporation - Guilford Greene Site 2617 Quaker Landing Road Greensboro, Guilford County, North Carolina 01/01/94 <1.0 2.0 <1.0 2.0 1.0 04/01/94 <1.0 <1.0 2.0 <1 <1.0 10/01/94 <1.0 <1.0 <1.0 <1.0 <1.0 04/01/96 <1.0 <1.0 <1.0 <1.0 3.4 03/01/99 <1.0 <1.0 <1.0 <1.0 <1.0 08/02/02 <1.0 <1.0 <1.0 <2.0 <1.0 08/03/03 <1.0 <1.0 <1.0 <1.0 <8.0 08/01/04 <1.0 <1.0 <1.0 <1.0 <8.0 08/24/05 <0.2 <0.19 <0.16 <0.29 <0.21 08/28/06 <0.2 <0.19 <0.16 <0.24 <0.21 08/07/07 <0.2 <0.19 <0.16 <0.24 <0.21 08/08/08 <0.2 <0.19 <0.16 0.88 J <0.21 08/03/09 <0.2 <0.37 <0.16 <0.24 0.61 J 08/18/10 <0.19 <0.2 <0.18 <0.49 <0.2 08/16/11 <0.19 <0.26 <0.33 <0.2 <0.18 08/14/12 <0.21 <0.27 <0.2 <0.2 <0.2 08/07/13 <0.21 <0.27 <0.2 <0.2 <0.2 08/27/14 <0.21 <0.21 <0.27 <0.63 <0.28 09/02/15 <0.21 <0.21 <0.27 <0.39 <0.28 08/25/16 <0.21 <0.21 3.5 21.9 <0.28 08/14/17 <0.21 <0.29 <0.37 <0.39 <0.65 09/11/18 <0.23 <0.23 <0.23 <0.39 <0.21 08/14/19 <0.23 0.87 U <0.23 <0.39 <0.21 2W19 2025_02_20 Tables Page 14 of 20 2/20/2025 AECOM Well ID Date Benzene Toluene Ethylbenzene Xylenes MTBE NC 2L GW Standard Table 7 Historical Groundwater Analytical Results Products (SE) Pipe Line Corporation - Guilford Greene Site 2617 Quaker Landing Road Greensboro, Guilford County, North Carolina 01/01/94 <1.0 <1.0 <1.0 <1.0 <1.0 04/01/94 <1.0 <1.0 <1.0 <1.0 <1.0 10/01/94 <1.0 <1.0 <1.0 <1.0 <1.0 04/01/95 <1.0 <1.0 <1.0 <1.0 <1.0 07/01/95 <1.0 <1.0 <1.0 <1.0 <1.0 10/01/95 <1.0 <1.0 <1.0 <1.0 <1.0 01/01/96 <1.0 <1.0 <1.0 <1.0 <1.0 07/01/96 <0.5 <1.0 <1.0 <2.0 NA 12/01/96 <0.5 <1.0 <1.0 <2.0 NA 06/01/97 <0.5 <1.0 <1.0 <2.0 NA 08/01/97 <0.5 <1.0 <1.0 <2.0 NA 12/01/97 <1.0 <1.0 <1.0 <1.0 NA 03/01/98 <1.0 <1.0 <1.0 <1.0 NA 08/01/98 <1.0 <1.0 <1.0 <1.0 NA 03/01/99 <1.0 <1.0 <1.0 <1.0 <1.0 02/01/01 <1.0 <1.0 <1.0 <1.0 <8.0 11/01/01 <1.0 <1.0 <1.0 <2.0 <8.0 08/02/02 <1.0 <1.0 <1.0 <2.0 <1.0 08/03/03 <1.0 <1.0 <1.0 <1.0 <8.0 08/01/04 <1.0 <1.0 <1.0 <1.0 <8.0 08/24/05 <0.2 <0.19 <0.16 <0.29 <0.21 08/28/06 <0.2 <0.19 <0.16 <0.24 1.4 08/07/07 <0.2 <0.19 <0.16 <0.24 <0.21 08/08/08 <0.2 1.1 <0.16 <0.24 <0.21 08/03/09 <0.2 <0.37 <0.16 <0.24 <0.21 08/18/10 <0.19 <0.2 <0.18 <0.49 <0.2 08/16/11 <0.19 <0.26 <0.33 <0.2 <0.18 08/14/12 <0.21 <0.27 <0.2 <0.2 <0.2 08/07/13 <0.21 <0.27 <0.2 <0.2 <0.2 08/27/14 <0.21 <0.21 <0.27 <0.63 <0.28 09/02/15 <0.21 <0.21 <0.27 <0.39 <0.28 08/25/16 <0.21 <0.21 0.88 J 5.4 <0.28 08/15/17 <0.21 <0.29 <0.37 <0.39 <0.65 09/11/18 <0.23 <0.23 <0.23 <0.39 <0.21 12/18/18 <0.23 <0.23 <0.23 <0.39 <0.21 03/22/19 <0.23 0.72 U <0.23 0.94 J <0.21 06/19/19 <0.23 <0.23 <0.23 <0.39 <0.21 08/14/19 <0.23 1.1 U <0.23 <0.39 <0.21 2W21 2025_02_20 Tables Page 15 of 20 2/20/2025 AECOM Well ID Date Benzene Toluene Ethylbenzene Xylenes MTBE NC 2L GW Standard Table 7 Historical Groundwater Analytical Results Products (SE) Pipe Line Corporation - Guilford Greene Site 2617 Quaker Landing Road Greensboro, Guilford County, North Carolina 01/01/94 <1.0 <1.0 <1.0 <1.0 <1.0 04/01/94 <1.0 <1.0 <1.0 <1.0 <1.0 10/01/94 <1.0 <1.0 1.0 4.0 <1.0 04/01/96 <1.0 <1.0 <1.0 <1.0 <1.0 07/01/96 <0.5 <1.0 <1.0 <2.0 NA 12/01/96 <0.5 <1.0 <1.0 <2.0 NA 06/01/97 <0.5 2.3 <1.0 3.5 NA 08/01/97 <0.5 <1.0 <1.0 <2.0 NA 12/01/97 <1.0 <1.0 <1.0 <1.0 NA 03/01/98 <1.0 <1.0 <1.0 <1.0 NA 03/01/00 <1.0 <1.0 <1.0 <1.0 <8.0 02/01/01 <1.0 <1.0 <1.0 <1.0 <8.0 08/01/00 <1.0 <1.0 <1.0 <1.0 <8.0 08/02/02 <1.0 <1.0 <1.0 <2.0 <1.0 08/03/03 <1.0 <1.0 <1.0 <1.0 <8.0 08/01/04 <1.0 <1.0 <1.0 <1.0 <8.0 08/24/05 <0.2 <0.19 <0.16 <0.29 <0.21 08/28/06 <0.2 <0.19 <0.16 <0.24 0.23 J 08/07/07 <0.2 <0.19 <0.16 <0.24 <0.21 08/08/08 <0.2 <0.19 <0.16 0.66 U <0.21 08/03/09 <0.2 <0.37 <0.16 <0.24 <0.21 08/18/10 <0.19 <0.2 <0.18 <0.49 <0.2 08/16/11 <0.19 <0.26 <0.33 <0.2 <0.18 08/14/12 <0.21 <0.27 <0.2 <0.2 <0.2 08/07/13 <0.21 <0.27 <0.2 <0.2 <0.2 08/27/14 <0.21 <0.21 <0.27 <0.63 <0.28 09/03/15 0.41 U 0.33 U <0.27 <0.39 <0.28 08/25/16 <0.21 <0.21 0.62 J 3.4 <0.28 08/15/17 <0.21 <0.29 <0.37 <0.39 <0.65 09/11/18 <0.23 <0.23 <0.23 <0.39 <0.21 08/14/19 <0.23 1.1 U <0.23 <0.39 <0.21 08/11/20 <0.23 0.61 U <0.23 <0.39 <0.21 03/22/21 <0.23 <0.23 <0.23 <0.39 <0.21 08/17/21 <0.23 1.3 U <0.23 <0.39 <0.21 11/18/21 <0.23 <0.23 <0.23 <0.39 <0.21 02/16/22 <0.23 <0.23 <0.23 <0.39 <0.21 05/15/22 <0.23 0.27 U <0.23 <0.39 <0.21 10/19/22 <0.23 <0.23 <0.23 <0.39 <0.21 04/24/23 <0.23 <0.23 <0.23 <0.39 <0.21 10/03/23 <0.23 <0.23 <0.23 <0.39 <0.21 04/10/24 <0.31 <0.30 <0.36 <0.72 <0.23 10/15/24 <0.31 <0.30 <0.36 <0.72 <0.23 2W22 2025_02_20 Tables Page 16 of 20 2/20/2025 AECOM Well ID Date Benzene Toluene Ethylbenzene Xylenes MTBE NC 2L GW Standard Table 7 Historical Groundwater Analytical Results Products (SE) Pipe Line Corporation - Guilford Greene Site 2617 Quaker Landing Road Greensboro, Guilford County, North Carolina 07/01/94 <1.0 <1.0 <1.0 <1.0 <1.0 10/01/94 <1.0 <1.0 <1.0 <1.0 <1.0 04/01/95 <1.0 <1.0 <1.0 <1.0 <1.0 07/01/95 <1.0 <1.0 <1.0 <1.0 <1.0 10/01/95 <1.0 <1.0 <1.0 <1.0 <1.0 01/01/96 <1.0 <1.0 <1.0 <1.0 23 04/01/96 <1.0 <1.0 <1.0 <1.0 <1.0 07/01/96 <0.5 <1.0 <1.0 <2.0 NA 12/01/96 <0.5 <1.0 <1.0 <2.0 NA 06/01/97 <0.5 <1.0 <1.0 <2.0 NA 08/01/97 <0.5 <1.0 <1.0 <2.0 NA 12/01/97 <1.0 <1.0 <1.0 <1.0 NA 03/01/98 <1.0 <1.0 <1.0 <1.0 NA 08/01/98 <1.0 <1.0 <1.0 <1.0 NA 03/01/99 <1.0 <1.0 <1.0 <1.0 <1.0 03/01/00 <1.0 <1.0 <1.0 <1.0 <8.0 08/01/00 <1.0 <1.0 <1.0 <1.0 <8.0 02/01/01 <1.0 <1.0 <1.0 <1.0 <8.0 08/02/02 <1.0 <1.0 <1.0 <2.0 <1.0 08/03/03 <1.0 <1.0 <1.0 <1.0 <8.0 08/01/04 <1.0 <1.0 <1.0 <1.0 <8.0 08/24/05 <0.2 <0.19 <0.16 <0.29 <0.21 08/28/06 <0.2 <0.19 <0.16 <0.24 <0.21 08/07/07 <0.2 <0.19 <0.16 <0.24 <0.21 08/08/08 <0.2 <0.19 <0.16 0.61 J <0.21 08/03/09 <0.2 <0.37 <0.16 <0.24 <0.21 08/18/10 <0.19 <0.2 <0.18 <0.49 <0.2 08/16/11 <0.19 <0.26 <0.33 <0.2 <0.18 08/14/12 <0.21 <0.27 <0.2 <0.2 <0.2 08/07/13 <0.21 <0.27 <0.2 <0.2 <0.2 08/27/14 <0.21 <0.21 <0.27 <0.63 <0.28 09/03/15 0.42 U 0.38 U <0.27 0.39 J <0.28 08/25/16 <0.21 <0.21 <0.27 <0.39 <0.28 08/15/17 <0.21 <0.29 <0.37 <0.39 <0.65 09/12/18 <0.23 <0.23 <0.23 <0.39 <0.21 08/14/19 <0.23 1.8 U <0.23 <0.39 <0.21 08/11/20 <0.23 0.42 U <0.23 <0.39 <0.21 03/22/21 <0.23 <0.23 <0.23 <0.39 <0.21 08/17/21 <0.23 0.85 U <0.23 <0.39 <0.21 11/18/21 <0.23 <0.23 <0.23 <0.39 <0.21 02/16/22 <0.23 <0.23 <0.23 <0.39 <0.21 05/15/22 <0.23 <0.23 <0.23 <0.39 <0.21 10/19/22 <0.23 2.1 5.6 42.9 <0.21 04/24/23 <0.23 <0.23 <0.23 <0.39 <0.21 10/03/23 <0.23 <0.23 <0.23 <0.39 <0.21 04/10/24 <0.31 <0.30 <0.36 <0.72 <0.23 10/15/24 <0.31 0.36 U <0.36 <0.72 <0.23 2W23 2025_02_20 Tables Page 17 of 20 2/20/2025 AECOM Well ID Date Benzene Toluene Ethylbenzene Xylenes MTBE NC 2L GW Standard Table 7 Historical Groundwater Analytical Results Products (SE) Pipe Line Corporation - Guilford Greene Site 2617 Quaker Landing Road Greensboro, Guilford County, North Carolina 11/18/21 156 1,170 163 2,600 10.3 02/17/22 11.5 55.6 6.2 J 259 9.7 J 05/16/22 16.6 49.1 0.44 J 30.1 4.2 10/19/22 4.6 6.6 1.7 56.6 5.4 04/25/23 2.2 107 41.2 233 <0.21 10/04/23 0.62 J 11.2 4.9 28.6 <0.21 04/10/24 11.4 36.6 <0.36 2.1 J <0.23 10/16/24 710 4,930 J-146 573 <11 11/18/21 0.39 J 1.3 2.9 12.1 <0.21 05/16/22 <0.23 0.33 U 2.1 10.1 0.77 J 10/19/22 <0.23 <0.23 7.9 36.2 <0.21 10/19/22 31.4 J 1,090 981 13,500 1,610 04/25/23 <230 1,160 1,920 33,400 J-316 J 10/04/23 46.5 88.9 52.7 1,070 123 04/10/24 <0.31 0.67 J <0.36 10.0 98.7 10/16/24 <3.1 7.1 U <3.6 <7.2 68.5 03/22/21 0.44 J <0.93 U 4.0 8.5 23.6 08/18/21 0.52 J 2.4 U 4.1 15.5 3.0 11/18/21 <0.23 <0.23 <0.23 0.77 J 3.6 02/17/22 <0.23 <0.23 <0.23 0.61 J <0.21 05/15/22 <0.23 <0.23 <0.23 <0.39 <0.21 10/19/22 <0.23 <0.23 <0.23 <0.39 <0.21 04/24/23 <0.23 <0.23 <0.23 <0.39 <0.21 10/04/23 <0.23 <0.23 <0.23 <0.39 <0.21 04/10/24 <0.31 <0.30 <0.36 <0.72 <0.23 10/15/24 <0.31 <0.30 <0.36 <0.72 <0.23 03/23/21 2,950 15,000 1,230 6,520 234 08/18/21 2,800 14,400 1,340 7,070 151 11/18/21 2,730 11,000 852 5,000 156 02/17/22 978 1,120 122 830 527 05/15/22 182 185 27.3 271 790 10/19/22 123 J 151 J 25.8 J 173 J 690 J 04/25/23 267 207 83.8 297 499 10/04/23 5.4 1.3 U <1.1 4.7 J 692 04/10/24 322 294 26.3 184 208 10/15/24 550 893 152 571 158 06/08/23 <0.23 0.38 U <0.23 <0.39 <0.21 10/04/23 <0.23 0.33 U <0.23 <0.39 <0.21 04/10/24 <0.31 <0.30 <0.36 <0.72 <0.23 10/15/24 <0.31 <0.30 <0.36 <0.72 <0.23 06/08/23 1.8 7.3 U 1.8 16.5 77.7 10/04/23 1.5 2.0 U 0.57 J 16.7 313 04/10/24 <0.31 <0.30 <0.36 6.0 136 10/15/24 <0.31 0.38 U <0.36 8.9 171 2W31 2W25 2W27 2W28 2W29 2W30 2W26 2025_02_20 Tables Page 18 of 20 2/20/2025 AECOM Well ID Date Benzene Toluene Ethylbenzene Xylenes MTBE NC 2L GW Standard Table 7 Historical Groundwater Analytical Results Products (SE) Pipe Line Corporation - Guilford Greene Site 2617 Quaker Landing Road Greensboro, Guilford County, North Carolina 03/23/21 <0.23 <0.23 <0.23 <0.39 <0.21 08/18/21 <0.23 0.79 U <0.23 <0.39 <0.21 11/18/21 <0.23 <0.23 <0.23 <0.39 <0.21 02/17/22 <0.23 <0.23 <0.23 <0.39 <0.21 05/15/22 <0.23 <0.23 <0.23 <0.39 <0.21 10/19/22 <0.23 UJ <0.23 UJ <0.23 UJ <0.39 UJ <0.21 UJ 04/24/23 <0.23 <0.23 <0.23 <0.39 <0.21 10/03/23 <0.23 0.29 U <0.23 <0.39 <0.21 04/10/24 <0.31 <0.30 <0.36 <0.72 <0.23 10/15/24 <0.31 0.41 U <0.36 <0.72 <0.23 08/02/02 8.3 22 5.9 31 100 08/03/03 3 7.3 2.8 12.2 32 08/01/04 5.1 5.2 <1.0 2.2 19 08/24/05 0.7 J 2.5 1.4 2.76 J <2.1 08/28/06 3.3 2.8 0.93 J 0.63 J 970 08/07/07 5.8 <0.19 0.93 U 2.59 U 1,000 08/08/08 3.4 3.1 <0.16 1.6 740 08/04/09 <0.2 1.7 J 0.49 J 0.73 J 380 08/18/10 78 <0.98 2.0 J 10.1 J 460 08/17/11 90 5.1 1.9 J 7.0 J 400 08/14/12 110 5.0 J 0.55 J 3.1 J 440 08/07/13 840 4.5 J <1.0 1.4 U 490 08/27/14 4,800 29 <1.4 3.6 J 390 09/02/15 7,190 55.6 <5.5 15.9 J 357 08/25/16 8,550 131 <14 <20 326 08/15/17 9,300 184 <18 <20 369 09/12/18 7,770 160 0.75 J 3.9 181 12/18/18 8,800 131 <2.3 8.8 J 198 03/22/19 8,120 142 <4.5 12 J 270 06/19/19 10,900 175 6.2 J 36.8 J 299 08/14/19 5,660 126 3.3 J 17.2 J 282 02/23/20 9,580 121 <23 <39 292 08/12/20 496 6.1 U <1.1 <2.0 15.0 03/22/21 2,820 28.7 <1.1 5.9 J 171 08/18/21 5,370 43.6 <4.5 <7.8 276 11/18/21 299 29.4 2.6 J 26.2 627 02/17/22 21.2 1.5 J 2.4 J 64.3 162 05/16/22 1.8 0.41 U 1.3 32 76.4 10/19/22 2.3 <0.23 <0.23 4.3 68.3 04/24/23 0.92 J <0.23 <0.23 <0.39 4.7 10/04/23 <0.23 0.26 U <0.23 <0.39 1.9 04/10/24 <0.31 <0.30 <0.36 <0.72 <0.23 10/15/24 5.1 0.60 U <0.36 <0.72 <0.23 DW1 AS1 2025_02_20 Tables Page 19 of 20 2/20/2025 AECOM Well ID Date Benzene Toluene Ethylbenzene Xylenes MTBE NC 2L GW Standard Table 7 Historical Groundwater Analytical Results Products (SE) Pipe Line Corporation - Guilford Greene Site 2617 Quaker Landing Road Greensboro, Guilford County, North Carolina 03/22/21 <0.23 <0.23 <0.23 <0.39 <0.21 08/17/21 <0.23 0.64 U <0.23 <0.39 <0.21 11/18/21 <0.23 <0.23 <0.23 <0.39 <0.21 02/17/22 <0.23 <0.23 <0.23 <0.39 <0.21 08/12/20 0.33 J 0.61 U <0.23 <0.39 2.5 J 03/22/21 0.26 J <0.23 <0.23 <0.39 1.3 08/18/21 0.65 J 0.95 U <0.23 <0.39 0.58 J 11/18/21 0.77 J 0.33 U 0.98 J 0.78 J 0.44 J 02/16/22 0.60 J <0.23 <0.23 0.46 J 0.65 J 05/16/22 0.42 J 0.27 U <0.23 <0.39 0.54 J 10/19/22 0.25 J <0.23 <0.23 <0.39 0.57 J 04/24/23 <0.23 <0.23 <0.23 <0.39 <0.21 10/04/23 0.29 J 0.28 U 0.30 J <0.39 <0.21 04/10/24 <0.31 <0.30 <0.36 <0.72 <0.23 10/15/24 0.40 J 0.41 U <0.36 <0.72 0.35 J 08/12/20 25.4 36.3 246 376 29.8 J 03/22/21 29.7 19.7 187 181 577 08/18/21 22.8 53.3 244 718 15.2 11/18/21 23.5 46.7 236 714 14.6 02/16/22 26 19.8 91.7 450 8.9 05/16/22 47.2 12.7 74.2 332 24.9 10/19/22 77.9 9.1 71.2 188 44.0 04/24/23 96.6 2.7 J+22.7 54.1 139 10/04/23 14.6 6.7 J+73.0 143 46.6 04/10/24 34.3 1.7 32.8 45.2 94.6 10/15/24 10.0 7.3 U 90.7 128 33.6 03/23/21 <0.23 <0.23 0.32 J <0.39 0.48 J 08/17/21 <0.23 1.3 U <0.23 <0.39 0.22 J 11/18/21 <0.23 <0.23 <0.23 <0.39 0.54 J 02/16/22 <0.23 <0.23 <0.23 <0.39 0.37 J 05/15/22 <0.23 <0.23 <0.23 <0.39 <0.21 10/19/22 <0.23 <0.23 <0.23 <0.39 0.35 J Notes: All values are in micrograms per liter (μg/L). MTBE = methyl tert-butyl ether < = not detected at the specified detection limit NA = not analyzed J = estimated concentration J- = estimated concentration, negative bias U = not present above the associated level; blank contamination exists UJ = not detected and detection limit is estimated AS9 AS10 NC 2L = North Carolina 2L Groundwater Quality Standards All bold value indicates the sample concentration is greater than the standard. AS13 AS4 2025_02_20 Tables Page 20 of 20 2/20/2025 AECOM Table 8 Soil Vapor Analytical Results Products (SE) Pipe Line Corporation - Guilford Greene Site 2617 Quaker Landing Road Greensboro, Guilford County, North Carolina Sample ID Date Benzene Toluene Ethylbenzene Xylenes MTBE Naphthalene 2-Methylnaphthalene NCDEQ SGSL 12 35,000 37 700 360 2.8 NA 08/21/19 <2.6 <4.5 <3.5 <6.9 <14 <10 <58 02/25/20 <2.6 <4.5 <3.5 <6.9 <14 <10 <58 11/23/20 <2.6 <4.5 <3.5 <6.9 <14 <10 <58 08/17/21 <2.6 <4.5 <3.5 <6.9 <14 <10 <58 11/24/21 <0.26 0.99 <0.35 <0.69 <1.4 <1.0 <5.8 02/19/22 <2.6 <4.5 <3.5 <6.9 <14 <10 <58 05/18/22 <2.6 <4.5 <3.5 <6.9 <14 <10 <58 08/17/22 <2.6 32 <3.5 <6.9 <14 <10 <58 11/17/22 <2.6 <4.5 <3.5 <6.9 <14 <10 <58 02/27/23 <2.6 <4.5 <3.5 <6.9 <14 <10 <58 05/14/23 <2.6 <4.5 <3.5 <6.9 <14 <10 <58 08/11/23 <2.6 <4.5 <3.5 <6.9 <14 <10 <58 11/20/23 <2.6 <4.5 <3.5 <6.9 <14 <10 <58 02/26/24 <2.6 <4.5 <3.5 <6.9 <14 <10 <58 05/15/24 <2.6 <4.5 <3.5 <6.9 <14 <10 <58 08/29/24 <2.6 <4.5 <3.5 <6.9 <14 <10 <58 11/22/24 <2.6 <4.5 <3.5 <6.9 <14 <10 <58 08/21/19 <2.6 <4.5 <3.5 <6.9 <14 <10 <58 02/25/20 <2.6 <4.5 <3.5 <6.9 <14 <10 <58 11/23/20 <2.6 <4.5 <3.5 <6.9 <14 <10 <58 08/17/21 <2.6 <4.5 <3.5 <6.9 <14 <10 <58 11/24/21 <0.26 0.73 <0.35 <0.69 <1.4 <1.0 <5.8 02/19/22 <2.6 <4.5 <3.5 <6.9 <14 <10 <58 05/18/22 <2.6 <4.5 <3.5 <6.9 <14 <10 <58 08/17/22 <2.6 8.5 <3.5 <6.9 <14 <10 <58 11/17/22 <2.6 <4.5 <3.5 <6.9 <14 <10 <58 02/27/23 <2.6 <4.5 <3.5 <6.9 <14 <10 <58 05/14/23 <2.6 <4.5 <3.5 <6.9 <14 <10 <58 08/11/23 <2.6 <4.5 <3.5 <6.9 <14 <10 <58 11/20/23 <2.6 <4.5 <3.5 <6.9 <14 <10 <58 02/26/24 <2.6 <4.5 <3.5 <6.9 <14 <10 <58 05/15/24 <2.6 <4.5 <3.5 <6.9 <14 <10 <58 08/29/24 <2.6 4.5 5.7 33 <14 <10 <58 11/22/24 <2.6 <4.5 <3.5 <6.9 <14 <10 <58 SG1 SG2 2025_02_20 Tables Page 1 of 2 2/20/2025 AECOM Table 8 Soil Vapor Analytical Results Products (SE) Pipe Line Corporation - Guilford Greene Site 2617 Quaker Landing Road Greensboro, Guilford County, North Carolina Sample ID Date Benzene Toluene Ethylbenzene Xylenes MTBE Naphthalene 2-Methylnaphthalene 08/21/19 <2.6 <4.5 <3.5 <6.9 <14 <10 <58 02/25/20 <2.6 <4.5 <3.5 <6.9 <14 <10 <58 11/23/20 <2.6 <4.5 <3.5 <6.9 <14 <10 <58 08/17/21 <2.6 <4.5 <3.5 <6.9 <14 <10 <58 11/24/21 <0.26 1.5 <0.35 <0.69 <1.4 <1.0 <5.8 02/19/22 <2.6 <4.5 <3.5 <6.9 <14 <10 <58 05/18/22 <2.6 <4.5 <3.5 <6.9 <14 <10 <58 08/17/22 <2.6 8.0 <3.5 <6.9 <14 <10 <58 11/17/22 <2.6 <4.5 <3.5 <6.9 <14 <10 <58 02/27/23 <2.6 <4.5 <3.5 <6.9 <14 <10 <58 05/14/23 <2.6 <4.5 <3.5 <6.9 <14 <10 <58 08/11/23 <2.6 <4.5 <3.5 <6.9 <14 <10 <58 11/20/23 <2.6 <4.5 <3.5 <6.9 <14 <10 <58 02/26/24 <2.6 <4.5 <3.5 <6.9 <14 <10 <58 05/15/24 <2.6 <4.5 <3.5 <6.9 <14 <10 <58 08/29/24 <2.6 <4.5 <3.5 11 <14 <10 <58 11/22/24 <2.6 <4.5 <3.5 <6.9 <14 <10 <58 08/21/19 <2.6 <4.5 <3.5 <6.9 <14 <10 <58 02/25/20 <13 <23 <17 <35 <72 <52 <290 11/23/20 <2.6 <4.5 <3.5 <6.9 <14 <10 <58 08/17/21 <2.6 <4.5 <3.5 <6.9 <14 <10 <58 11/24/21 <0.26 0.74 <0.35 <0.69 <1.4 <1.0 <5.8 02/19/22 <2.6 <4.5 <3.5 <6.9 <14 <10 <58 05/18/22 <2.6 <4.5 <3.5 <6.9 <14 <10 <58 08/17/22 <2.6 7.6 <3.5 <6.9 <14 <10 <58 11/17/22 <2.6 <4.5 <3.5 <6.9 <14 <10 <58 02/27/23 <2.6 <4.5 <3.5 <6.9 <14 <10 <58 05/14/23 <2.6 <4.5 <3.5 <6.9 <14 <10 <58 08/11/23 <2.6 <4.5 <3.5 <6.9 <14 <10 <58 11/20/23 <2.6 <4.5 <3.5 <6.9 <14 <10 <58 02/26/24 <2.6 <4.5 <3.5 <6.9 <14 <10 <58 05/15/24 <2.6 <4.5 <3.5 <6.9 <14 <10 <58 08/29/24 <2.6 <4.5 <3.5 <6.9 <14 <10 <58 11/22/24 <2.6 <4.5 <3.5 7.4 <14 <10 <58 Notes: MTBE = methyl tert-butyl ether This table presents a summary of all volatile organic analysis results associated with soil gas samples collected at the Site. Sample results are unvalidated. All sample results are reported in micrograms per cubic meter. SG3 SG4 2025_02_20 Tables Page 2 of 2 2/20/2025 AECOM Semiannual Report July – December 2024 Figures Figure: 1Site Location Map Fil e n a m e : Q : \ D C S \ P R O J E C T S \ L - U R S \ C O M M O N _ P R O J E C T S \ K I N D E R M O R G A N \ 2 . 0 P R O J E C T A D M I N I S T R A T I O N \ G U I L F O R D G R E E N E \ 5 D E L I V E R A B L E S \ 5 . 1 W O R K I N G D O C U M E N T S \ 2 0 2 4 2 N D H A L F S E M I A N N U A L R E P O R T \ C A D \ F I G U R E 1 _ S I T E L O C M A P _ G U I L G R E E N E _ 2 0 2 5 0 2 0 4 . D W G   Semiannual Report July - December 2024 Products (SE) Pipe Line Corporation - Guilford Greene Site 2617 Quaker Landing Road Greensboro, Guilford County, North Carolina Project Number: 60746743 Revised Date: 2025-02-04 Project Management Initials: Designed by: BGS Checked by: BM Approved by: WP [ [ [ [ [ [ [ [[[[[[[ [[[[[[[[[[ [ [ [ @A @A @A @A @A @A @A @A @A @A @A @A @A @A @A @A @A @A @A @A @A @A @A !B !B !B !B @A @A @A !B AS SVE 2W1 2W3 2W4 2W6 2W8 2W9 2W10 2W11 2W12 2W13 2W14 2W17 2W18 2W19 2W21 2W22 2W23 2W25 2W27 2W28 2W29 2W30 2W31 AS9 AS10 AS13 AS4 DW1 2W7 2W26 AS1 SG1 SG3 SG4 SG2 Path: C:\Users\boerescuc\AECOM\EC GIS Services - GIS CAD PROJECTS\DCS AMERICAS\KINDER MORGAN\Guildford Greene\11.05.2024\2. Workspace\F02_SitePlan_October24.mxd Designed by: EL Checked by: BM Approved by: WP Site Plan Figure: 2 Quaker Landing Road Grist Mill Court Legend @A Monitoring Well Property Boundary 0 100 Approximate Scale, Feet Colonial Pipeline Right-of-way PPL Right-of-Way PPL Right-of-Way Oxidizer Former Remediation Building System Building Compressor Shed Underground Electric Line Colonial Pipeline Right-of-Way Historical Air Sparge Well!A Soil Gas Point!( Underground Gas Project Number: 60724847 Revision Date: 2025-02-03 Semiannual Report July - December 2024 Products (SE) Pipe Line Corporation - Guilford Greene Site 2617 Quaker Landing Road Greensboro, Guilford County, North Carolina Underground Telephone Underground Fiber Optic Underground Sewer Line Underground Water Line 8' Wooden Fence[ [ E T FO G SS W Quaker La n d i n g R o a d PPL Righ t - o f - W a y System Building Gate AS118 AS119 AS117 AS120 AS116 AS115 AS114 AS121 AS122 AS123 AS113 AS111 AS112 AS110 AS108 AS107 AS106 AS104 AS105 AS102 AS101 AS103 AS109 SVE112 SVE111 SVE113 SVE110 SVE114 SVE115 SVE109 SVE106 SVE107 SVE105 SVE102 SVE101 SVE104 SVE103 SVE108 Main Electrical Disconnect AS Pipe Stubups SVE Well Cleanouts OxidizerOxidizer Electrical Disconnect AS13 2W13 2W6 2W7 2W4 AS4 2W1 2W10 2W9 AS1 2W14 SG3 SG2 SG1 2W29 DW1 2W25 2W28 2W27 2W26 SG4 SVE Pipe Stubups Former Remediation Building Compressor Shed Duke Energy Transformer Telephone Pedestal Sanitary Sewer Cleanout Telephone Hand Pole Fire Hydrant SVE Room PPL Right - o f - W a y Colonial P i p e l i n e R i g h t - o f - W a y Light Pole AS Room Duke Energy Transformer AS/SVE System Layout Map Figure: 3 Monitoring Well Historical Air Sparge Well Semiannual Report July - December 2024 2617 Quaker Landing Road Greensboro, Guilford County, North Carolina Legend Underground Telephone Underground Electric Line Underground Fiber Optic Underground Gas Soil Gas Points Filename: C:\USERS\BOERESCUC\AECOM\EC GIS SERVICES - GIS CAD PROJECTS\DCS AMERICAS\KINDER MORGAN\GUILDFORD GREENE\11.05.2024\2. WORKSPACE\F3 – AS-SVE SYSTEM LAYOUT MAP 2024.DWG Designed by: CB Checked by: BM Approved by: WP Soil Vapor Extraction Well Air Sparge Well Trench Lines 8' Wooden Fence Underground Water Line Underground Sewer Line Products (SE) Pipe Line Corporation - Guilford Greene Site Property Boundary Project Number: 60724847 Revision Date: 2025-02-03 @A @A @A @A @A @A @A @A @A @A @A @A @A @A @A @A @A @A @A @A @A @A @A !B !B !B !B @A @A @A !B 762 762 761 761 760 760 759759 758 758757 757 756 756 755 755 763 763 2W1 763.14 2W3 756.47 2W4 756.46 2W6 758.64 2W8 762.80 2W9 759.39 2W10 760.92 2W11 755.21 2W12 756.20 2W13 755.49 2W14 757.01 2W17 755.23 2W18 754.65 2W19 760.65 2W21 755.40 2W22 756.45 2W23 758.02 2W25 757.74 2W27 (751.63) 2W28 757.99 2W29 756.90 2W30 756.60 2W31 756.48 AS9 755.02 AS10 754.99 AS13 756.63 AS4 Dry DW1 (757.15) 2W7 (759.82) 2W26 757.69 AS1 (755.26) Path: C:\Users\boerescuc\AECOM\EC GIS Services - GIS CAD PROJECTS\DCS AMERICAS\KINDER MORGAN\Guildford Greene\11.05.2024\2. Workspace\F04_GW_Octoberl24.mxd Designed by: EL Checked by: BM Approved by: WP Groundwater Contour Map October 15, 2024 Figure: 4 Quaker Landing Road Grist Mill Court Colonial Pipeline Right-of-Way PPL Right-of-Way PPL Right-of-Way%% Legend Generalized Groundwater Flow Direction 763.14 Potentiometric Contour (Feet ASML) (Dashed where inferred) @A Monitoring Well (751.63) Groundwater Elevation Groundwater Elevation (Not used for contouring) % 0 100 Approximate Scale, Feet Property Boundary 762 Historical Air Sparge Well!A Colonial Pipeline Right-of-Way Semiannual Report July - December 2024 Products (SE) Pipe Line Corporation - Guilford Greene Site 2617 Quaker Landing Road Greensboro, Guilford County, North Carolina Project Number: 60724847 Revision Date: 2024-11-22 &A &A &A &A &A &A &A &A &A &A &A &A &A &A &A &A &A &A &A &A &A &A &A !A !A !A !A &A &A &A !A 110 110 1 100 2W1 <0.31 2W3 <0.31 2W4 <1.6 2W8 NS 2W9 NS 2W10 NS 2W11 <0.31 2W12 NS 2W13 <0.31 2W14 0.54 J 2W17 NS 2W18 <0.31 2W19 NS 2W21 NS 2W22 <0.31 2W23 <0.31 2W27 <3.1 2W28 <0.31 2W30 <0.31 2W31 <0.31 AS9 0.40 J AS10 10.0 AS13 NS AS4 NS DW1 (<0.31) 2W7 <0.31 2W26 NS AS1 5.1 2W6 <1.6 2W25 710 2W29 550 Path: C:\Users\boerescuc\AECOM\EC GIS Services - GIS CAD PROJECTS\DCS AMERICAS\KINDER MORGAN\Guildford Greene\11.05.2024\2. Workspace\F05A_BZt_October24.mxd Designed by: EL Checked by: BM Approved by: WP Benzene Results October 15-16, 2024 Figure: 5A Quaker Landing Road Grist Mill Court Colonial Pipeline Right-of-Way PPL Right-of-Way PPL Right-of-Way Legend Benzene Isocontour (Dashed where inferred, if applicable) < Property Boundary @A Monitoring Well J Not Detected at the Specified Detection Limit Estimated Value 0 100 Approximate Scale, Feet NS Not Sampled Notes 1. Concentrations shown are expressed in µg/L (micrograms per liter). 2. Concentrations in bold text exceeded the NC 2L groundwater standard of 1 µg/L. Historical Air Sparge Well!A Colonial Pipeline Right-of-Way (<0.31)Benzene Concentration (Not used for contouring) Semiannual Report July - December 2024 Products (SE) Pipe Line Corporation - Guilford Greene Site 2617 Quaker Landing Road Greensboro, Guilford County, North Carolina Project Number: 60724847 Revision Date: 2024-11-22 &A &A &A &A &A &A &A &A &A &A &A &A &A &A &A &A &A &A &A &A &A &A &A !A !A !A !A &A &A &A !A 600 2W1 <0.30 2W3 <0.30 2W4 <1.5 2W6 57 2W8 NS 2W9 NS 2W10 NS 2W11 <0.30 2W12 NS 2W13 <0.30 2W14 0.84 U 2W17 NS 2W18 <0.30 2W19 NS 2W21 NS 2W22 <0.30 2W23 0.36 U 2W25 4,930 J- 2W27 7.1 U 2W28 <0.30 2W29 893 2W30 <0.30 2W31 0.38 U AS9 0.41 U AS10 7.3 U AS13 NS AS4 NS DW1 (0.41 U) 2W7 0.64 U 2W26 NS AS1 0.60 U Path: C:\Users\boerescuc\AECOM\EC GIS Services - GIS CAD PROJECTS\DCS AMERICAS\KINDER MORGAN\Guildford Greene\11.05.2024\2. Workspace\F05B_TOLUENE_October24.mxd Designed by: EL Checked by: BM Approved by: WP Toluene Results October 15-16, 2024 Figure: 5B Quaker Landing Road Grist Mill Court Colonial Pipeline Right-of-Way PPL Right-of-Way 0 100 Approximate Scale, Feet Notes 1. Concentrations shown are expressed in µg/L (micrograms per liter). 2. Concentrations in bold text exceeded the NC 2L groundwater standard of 600 µg/L. U Not present above the associated level: Blank contamination exists Colonial Pipeline Right-of-Way Semiannual Report July - December 2024 Products (SE) Pipe Line Corporation - Guilford Greene Site 2617 Quaker Landing Road Greensboro, Guilford County, North Carolina Project Number: 60724847 Revision Date: 2024-11-22 Legend Toluene Isocontour (Dashed where inferred, if applicable) Property Boundary @A Monitoring Well J Not Detected at the Specified Detection Limit Estimated Value NS Not Sampled < Historical Air Sparge Well!A (0.41 U)Toluene Concentration (Not used for contouring) J-Estimated Value, Negative Bias @A @A @A @A @A @A @A @A @A @A @A @A @A @A @A @A @A @A @A @A @A @A @A !A !A !A !A @A @A @A !A 2W1 <0.36 2W3 <0.36 2W4 <1.8 2W6 141 2W8 NS 2W9 NS 2W10 NS 2W11 <0.36 2W12 NS 2W13 <0.36 2W14 0.40 J 2W17 NS 2W18 <0.36 2W19 NS 2W21 NS 2W22 <0.36 2W23 <0.36 2W25 146 2W27 <3.6 2W28 <0.36 2W29 152 2W30 <0.36 2W31 <0.36 AS9 <0.36 AS10 90.7 AS13 NS AS4 NS DW1 <0.36 2W7 <0.36 2W26 NS AS1 <0.36 Path: C:\Users\boerescuc\AECOM\EC GIS Services - GIS CAD PROJECTS\DCS AMERICAS\KINDER MORGAN\Guildford Greene\11.05.2024\2. Workspace\F05C_ETHYLBZ_October24.mxd Designed by: EL Checked by: BM Approved by: WP Ethylbenzene Results October 15-16, 2024 Figure: 5C Quaker Landing Road Grist Mill Court Colonial Pipeline Right-of-Way PPL Right-of-Way PPL Right-of-Way 0 100 Approximate Scale, Feet Notes 1. Concentrations shown are expressed in µg/L (micrograms per liter). 2. No ethylbenzene concentrations exceeded the NC 2L groundwater standard of 600 µg/L. Colonial Pipeline Right-of-Way Semiannual Report July - December 2024 Products (SE) Pipe Line Corporation - Guilford Greene Site 2617 Quaker Landing Road Greensboro, Guilford County, North Carolina Project Number: 60724847 Revision Date: 2024-11-22 Legend Property Boundary @A Monitoring Well J Not Detected at the Specified Detection Limit Estimated Value NS Not Sampled < Historical Air Sparge Well!A @A @A @A @A @A @A @A @A @A @A @A @A @A @A @A @A @A @A @A @A @A @A @A !A !A !A !A @A @A @A !A 2W1 <0.72 2W3 <0.72 2W4 <3.6 2W8 NS 2W9 NS 2W10 NS 2W11 <0.72 2W12 NS 2W13 <0.72 2W14 1.6 J 2W17 NS 2W18 <0.72 2W19 NS 2W21 NS 2W22 <0.72 2W23 <0.72 2W25 573 2W27 <7.2 2W28 <0.72 2W29 571 2W30 <0.72 2W31 8.9 AS9 <0.72 AS10 128 AS13 NS AS4 NS DW1 (<0.72) 2W7 1.0 J 2W26 NS AS1 <0.72 2W6 1,980 Path: C:\Users\boerescuc\AECOM\EC GIS Services - GIS CAD PROJECTS\DCS AMERICAS\KINDER MORGAN\Guildford Greene\11.05.2024\2. Workspace\F05D_Xylenes_October24.mxd Designed by: EL Checked by: BM Approved by: WP Xylenes Results October 15-16, 2024 Figure: 5D Quaker Landing Road Grist Mill Court Colonial Pipeline Right-of-Way PPL Right-of-Way PPL Right-of-Way 0 100 Approximate Scale, Feet Notes 1. Concentrations shown are expressed in µg/L (micrograms per liter). 2. Concentrations in bold text exceeded the NC 2L groundwater standard of 500 µg/L. 500 Colonial Pipeline Right-of-Way Semiannual Report July - December 2024 Products (SE) Pipe Line Corporation - Guilford Greene Site 2617 Quaker Landing Road Greensboro, Guilford County, North Carolina Project Number: 60724847 Revision Date: 2024-11-22 Legend Xylenes Isocontour (Dashed where inferred, if applicable) Property Boundary @A Monitoring Well J Not Detected at the Specified Detection Limit Estimated Value NS Not Sampled < Historical Air Sparge Well!A (<0.72)Xylenes Concentration (Not used for contouring) @A @A @A @A @A @A @A @A @A @A @A @A @A @A @A @A @A @A @A @A @A @A @A !A !A !A !A @A @A @A !A 2W1 <0.23 2W3 <0.23 2W6 <1.1 2W8 NS 2W9 NS 2W10 NS 2W11 <0.23 2W12 NS 2W13 <0.23 2W14 <0.23 2W17 NS 2W18 <0.23 2W19 NS 2W21 NS 2W22 <0.23 2W23 <0.23 2W25 <11 2W28 <0.23 2W30 <0.23 AS9 0.35 J AS13 NS AS4 NS DW1 <0.23 2W7 8.5 2W26 NS AS1 <0.23 2W4 227 2W27 68.5 2W29 158 2W31 171 AS10 33.6 Semiannual Report July - December 2024 Products (SE) Pipe Line Corporation - Guilford Greene Site 2617 Quaker Landing Road Greensboro, Guilford County, North Carolina Path: C:\Users\boerescuc\AECOM\EC GIS Services - GIS CAD PROJECTS\DCS AMERICAS\KINDER MORGAN\Guildford Greene\11.05.2024\2. Workspace\F05E_MTBE_October24.mxd Designed by: EL Checked by: BM Approved by: WP MTBE Results October 15-16, 2024 Figure: 5E Quaker Landing Road Grist Mill Court Colonial Pipeline Right-of-Way PPL Right-of-Way PPL Right-of-Way 0 100 Approximate Scale, Feet Notes 1. Concentrations shown are expressed in µg/L (micrograms per liter). 2. Concentrations in bold text exceeded the NC 2L groundwater standard of 20 µg/L. 20 20 200 Colonial Pipeline Right-of-Way Project Number: 60724847 Revision Date: 2024-11-22 Legend J Estimated Value MTBE Isocontour (Dashed where inferred, if applicable) Property Boundary @A Monitoring Well Not Detected at the Specified Detection Limit NS Not Sampled < Historical Air Sparge Well!A AECOM Semiannual Report July – December 2024 Appendices AECOM Semiannual Report July – December 2024 Appendix A Laboratory Analytical Reports – SVE Influent/Effluent Air ANALYTICAL REPORT PREPARED FOR Attn: Brandt Morrow AECOM 900 Perimeter Park Drive Suite A Morrisville, North Carolina 27560 Generated 7/23/2024 10:02:53 AM JOB DESCRIPTION PPL Guilford Greene JOB NUMBER 140-37557-1 See page two for job notes and contact information. Knoxville TN 37921 5815 Middlebrook Pike Eurofins Knoxville Page 1 of 21 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Eurofins Knoxville Eurofins Knoxville is a laboratory within TestAmerica Laboratories, Inc., a company within Eurofins Environment Testing Group of Companies Job Notes This report may not be reproduced except in full, and with written approval from the laboratory. The results relate only to the samples tested. For questions please contact the Project Manager at the e-mail address or telephone number listed on this page. The test results in this report relate only to the samples as received by the laboratory and will meet all requirements of the methodology, with any exceptions noted. This report shall not be reproduced except in full, without the express written approval of the laboratory. All questions should be directed to the Eurofins TestAmerica Project Manager. Authorization Generated 7/23/2024 10:02:53 AM Authorized for release by Jamie McKinney, Senior Project Manager Jamie.McKinney@et.eurofinsus.com (865)291-3000 Page 2 of 21 7/23/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Table of Contents Client: AECOM Project/Site: PPL Guilford Greene Laboratory Job ID: 140-37557-1 Page 3 of 21 Eurofins Knoxville7/23/2024 Cover Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 Table of Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 Definitions/Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 Case Narrative . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 Detection Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 Client Sample Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7 Default Detection Limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9 Surrogate Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10 QC Sample Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11 QC Association Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14 Lab Chronicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15 Method Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16 Sample Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17 Chain of Custody . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18 Receipt Checklists . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20 Air Canister Dilution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Definitions/Glossary Job ID: 140-37557-1Client: AECOM Project/Site: PPL Guilford Greene Glossary These commonly used abbreviations may or may not be present in this report. ¤Listed under the "D" column to designate that the result is reported on a dry weight basis Abbreviation %R Percent Recovery CFL Contains Free Liquid CFU Colony Forming Unit CNF Contains No Free Liquid DER Duplicate Error Ratio (normalized absolute difference) Dil Fac Dilution Factor DL Detection Limit (DoD/DOE) DL, RA, RE, IN Indicates a Dilution, Re-analysis, Re-extraction, or additional Initial metals/anion analysis of the sample DLC Decision Level Concentration (Radiochemistry) EDL Estimated Detection Limit (Dioxin) LOD Limit of Detection (DoD/DOE) LOQ Limit of Quantitation (DoD/DOE) MCL EPA recommended "Maximum Contaminant Level" MDA Minimum Detectable Activity (Radiochemistry) MDC Minimum Detectable Concentration (Radiochemistry) MDL Method Detection Limit ML Minimum Level (Dioxin) MPN Most Probable Number MQL Method Quantitation Limit NC Not Calculated ND Not Detected at the reporting limit (or MDL or EDL if shown) NEG Negative / Absent POS Positive / Present PQL Practical Quantitation Limit PRES Presumptive QC Quality Control RER Relative Error Ratio (Radiochemistry) RL Reporting Limit or Requested Limit (Radiochemistry) RPD Relative Percent Difference, a measure of the relative difference between two points TEF Toxicity Equivalent Factor (Dioxin) TEQ Toxicity Equivalent Quotient (Dioxin) TNTC Too Numerous To Count Eurofins Knoxville Page 4 of 21 7/23/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Job Narrative140-37557-1 Receipt The samples were received on 7/11/2024 10:00 AM.Unless otherwise noted below,the samples arrived in good condition,and where required,properly preserved and on ice. Air -GC/MS VOAMethodsTO15LL,TO-14A,TO-15:EPA methods TO-14A and TO-15 specify the use of humidified "zero air"as the blank reagent for canister cleaning,instrument calibration and sample analysis.Ultra-high purity humidified nitrogen from a cryogenic reservoir is used in place of "zero air"by Eurofins TestAmerica Knoxville. No additional analytical or quality issues were noted,other than those described above or in the Definitions/Glossary page. Case Narrative Client: AECOM Job ID: 140-37557-1 Project: PPL Guilford Greene Eurofins Knoxville Job ID: 140-37557-1 Eurofins Knoxville Page 5 of 21 7/23/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Detection Summary Job ID: 140-37557-1Client: AECOM Project/Site: PPL Guilford Greene Client Sample ID: EFF-20240710 Lab Sample ID: 140-37557-1 Benzene RL 0.0061 ppm v/v MDLAnalyteResultQualifier Unit Dil Fac D Method Prep Type Total/NA4.570.024 TO-15 Ethylbenzene 0.0061 ppm v/v Total/NA4.570.0067 TO-15 m-Xylene & p-Xylene 0.0061 ppm v/v Total/NA4.570.030 TO-15 o-Xylene 0.0061 ppm v/v Total/NA4.570.014 TO-15 Xylenes, Total 0.012 ppm v/v Total/NA4.570.044 TO-15 Total VOC as Octane 1300 ug/m3 Total/NA4.578000 TO-15 Benzene RL 0.019 mg/m3 MDLAnalyteResultQualifier Unit Dil Fac D Method Prep Type Total/NA4.570.078 TO-15 Ethylbenzene 0.026 mg/m3 Total/NA4.570.029 TO-15 m-Xylene & p-Xylene 0.026 mg/m3 Total/NA4.570.13 TO-15 o-Xylene 0.026 mg/m3 Total/NA4.570.059 TO-15 Xylenes, Total 0.053 mg/m3 Total/NA4.570.19 TO-15 Client Sample ID: IN-20240710 Lab Sample ID: 140-37557-2 Benzene RL 0.15 ppm v/v MDLAnalyteResultQualifier Unit Dil Fac D Method Prep Type Total/NA56.470.36 TO-15 Ethylbenzene 0.15 ppm v/v Total/NA56.472.3 TO-15 Toluene 0.75 ppm v/v Total/NA56.478.7 TO-15 m-Xylene & p-Xylene 0.15 ppm v/v Total/NA56.477.9 TO-15 o-Xylene 0.15 ppm v/v Total/NA56.473.4 TO-15 Xylenes, Total 0.30 ppm v/v Total/NA56.4711 TO-15 Total VOC as Octane 33000 ug/m3 Total/NA56.47350000 TO-15 Benzene RL 0.48 mg/m3 MDLAnalyteResultQualifier Unit Dil Fac D Method Prep Type Total/NA56.471.1 TO-15 Ethylbenzene 0.65 mg/m3 Total/NA56.479.9 TO-15 Toluene 2.8 mg/m3 Total/NA56.4733 TO-15 m-Xylene & p-Xylene 0.65 mg/m3 Total/NA56.4734 TO-15 o-Xylene 0.65 mg/m3 Total/NA56.4715 TO-15 Xylenes, Total 1.3 mg/m3 Total/NA56.4749 TO-15 Eurofins Knoxville This Detection Summary does not include radiochemical test results. Page 6 of 21 7/23/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Client Sample Results Job ID: 140-37557-1Client: AECOM Project/Site: PPL Guilford Greene Lab Sample ID: 140-37557-1Client Sample ID: EFF-20240710 Matrix: AirDate Collected: 07/10/24 10:30 Date Received: 07/11/24 10:00 Sample Container: Summa Canister 1L Method: EPA TO-15 - Volatile Organic Compounds in Ambient Air RL MDL 0.024 0.0061 ppm v/v 07/19/24 11:57 4.57 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier Benzene 0.0061 ppm v/v 07/19/24 11:57 4.570.0067Ethylbenzene 0.030 ppm v/v 07/19/24 11:57 4.57NDToluene 0.0061 ppm v/v 07/19/24 11:57 4.570.030m-Xylene & p-Xylene 0.0061 ppm v/v 07/19/24 11:57 4.570.014o-Xylene 0.030 ppm v/v 07/19/24 11:57 4.57NDMethyl tert-butyl ether 0.012 ppm v/v 07/19/24 11:57 4.57NDNaphthalene 0.012 ppm v/v 07/19/24 11:57 4.570.044Xylenes, Total 1300 ug/m3 07/19/24 11:57 4.578000Total VOC as Octane RL MDL 0.078 0.019 mg/m3 07/19/24 11:57 4.57 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier Benzene 0.026 mg/m3 07/19/24 11:57 4.570.029Ethylbenzene 0.11 mg/m3 07/19/24 11:57 4.57NDToluene 0.026 mg/m3 07/19/24 11:57 4.570.13m-Xylene & p-Xylene 0.026 mg/m3 07/19/24 11:57 4.570.059o-Xylene 0.11 mg/m3 07/19/24 11:57 4.57NDMethyl tert-butyl ether 0.064 mg/m3 07/19/24 11:57 4.57NDNaphthalene 0.053 mg/m3 07/19/24 11:57 4.570.19Xylenes, Total 4-Bromofluorobenzene (Surr)100 60-140 07/19/24 11:57 4.57 Surrogate Dil FacAnalyzedPreparedQualifierLimits%Recovery Eurofins Knoxville Page 7 of 21 7/23/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Client Sample Results Job ID: 140-37557-1Client: AECOM Project/Site: PPL Guilford Greene Lab Sample ID: 140-37557-2Client Sample ID: IN-20240710 Matrix: AirDate Collected: 07/10/24 10:45 Date Received: 07/11/24 10:00 Sample Container: Summa Canister 1L Method: EPA TO-15 - Volatile Organic Compounds in Ambient Air RL MDL 0.36 0.15 ppm v/v 07/18/24 00:30 56.47 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier Benzene 0.15 ppm v/v 07/18/24 00:30 56.472.3Ethylbenzene 0.75 ppm v/v 07/18/24 00:30 56.478.7Toluene 0.15 ppm v/v 07/18/24 00:30 56.477.9m-Xylene & p-Xylene 0.15 ppm v/v 07/18/24 00:30 56.473.4o-Xylene 0.75 ppm v/v 07/18/24 00:30 56.47NDMethyl tert-butyl ether 0.30 ppm v/v 07/18/24 00:30 56.47NDNaphthalene 0.30 ppm v/v 07/18/24 00:30 56.4711Xylenes, Total 33000 ug/m3 07/18/24 00:30 56.47350000Total VOC as Octane RL MDL 1.1 0.48 mg/m3 07/18/24 00:30 56.47 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier Benzene 0.65 mg/m3 07/18/24 00:30 56.479.9Ethylbenzene 2.8 mg/m3 07/18/24 00:30 56.4733Toluene 0.65 mg/m3 07/18/24 00:30 56.4734m-Xylene & p-Xylene 0.65 mg/m3 07/18/24 00:30 56.4715o-Xylene 2.7 mg/m3 07/18/24 00:30 56.47NDMethyl tert-butyl ether 1.6 mg/m3 07/18/24 00:30 56.47NDNaphthalene 1.3 mg/m3 07/18/24 00:30 56.4749Xylenes, Total 4-Bromofluorobenzene (Surr)96 60-140 07/18/24 00:30 56.47 Surrogate Dil FacAnalyzedPreparedQualifierLimits%Recovery Eurofins Knoxville Page 8 of 21 7/23/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Default Detection Limits Client: AECOM Job ID: 140-37557-1 Project/Site: PPL Guilford Greene Method: TO-15 - Volatile Organic Compounds in Ambient Air 0.00020Benzene ppm v/v Analyte UnitsMDLRL 0.000033 0.00064Benzene mg/m30.00011 0.00020Ethylbenzene ppm v/v0.000033 0.00087Ethylbenzene mg/m30.00014 0.0010Methyl tert-butyl ether ppm v/v0.00013 0.0036Methyl tert-butyl ether mg/m30.00047 0.00020m-Xylene & p-Xylene ppm v/v0.000073 0.00087m-Xylene & p-Xylene mg/m30.00032 0.00040Naphthalene ppm v/v0.00010 0.0021Naphthalene mg/m30.00052 0.00020o-Xylene ppm v/v0.000038 0.00087o-Xylene mg/m30.00017 0.0010Toluene ppm v/v0.000057 0.0038Toluene mg/m30.00021 44Total VOC as Octane ug/m344 0.00040Xylenes, Total ppm v/v0.000038 0.0017Xylenes, Total mg/m30.00017 Eurofins Knoxville Page 9 of 21 7/23/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Surrogate Summary Job ID: 140-37557-1Client: AECOM Project/Site: PPL Guilford Greene Method: TO-15 - Volatile Organic Compounds in Ambient Air Prep Type: Total/NAMatrix: Air Lab Sample ID Client Sample ID (60-140) BFB 100140-37557-1 Percent Surrogate Recovery (Acceptance Limits) EFF-20240710 96140-37557-2 IN-20240710 107LCS 140-88712/1002 Lab Control Sample 107LCS 140-88866/1002 Lab Control Sample 98MB 140-88712/4 Method Blank 97MB 140-88866/5 Method Blank Surrogate Legend BFB = 4-Bromofluorobenzene (Surr) Eurofins Knoxville Page 10 of 21 7/23/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 QC Sample Results Job ID: 140-37557-1Client: AECOM Project/Site: PPL Guilford Greene Method: TO-15 - Volatile Organic Compounds in Ambient Air Client Sample ID: Method BlankLab Sample ID: MB 140-88712/4 Matrix: Air Prep Type: Total/NA Analysis Batch: 88712 RL MDL Benzene ND 0.00020 ppm v/v 07/17/24 09:51 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResultQualifier ND 0.00020 ppm v/v 07/17/24 09:51 1Ethylbenzene ND 0.0010 ppm v/v 07/17/24 09:51 1Toluene ND 0.00020 ppm v/v 07/17/24 09:51 1m-Xylene & p-Xylene ND 0.00020 ppm v/v 07/17/24 09:51 1o-Xylene ND 0.0010 ppm v/v 07/17/24 09:51 1Methyl tert-butyl ether ND 0.00040 ppm v/v 07/17/24 09:51 1Naphthalene ND 0.00040 ppm v/v 07/17/24 09:51 1Xylenes, Total ND 44 ug/m3 07/17/24 09:51 1Total VOC as Octane RL MDL Benzene ND 0.00064 mg/m3 07/17/24 09:51 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResultQualifier ND 0.00087 mg/m3 07/17/24 09:51 1Ethylbenzene ND 0.0038 mg/m3 07/17/24 09:51 1Toluene ND 0.00087 mg/m3 07/17/24 09:51 1m-Xylene & p-Xylene ND 0.00087 mg/m3 07/17/24 09:51 1o-Xylene ND 0.0036 mg/m3 07/17/24 09:51 1Methyl tert-butyl ether ND 0.0021 mg/m3 07/17/24 09:51 1Naphthalene ND 0.0017 mg/m3 07/17/24 09:51 1Xylenes, Total 4-Bromofluorobenzene (Surr)98 60-140 07/17/24 09:51 1 MB MB Surrogate Dil FacPreparedAnalyzedQualifierLimits%Recovery Client Sample ID: Lab Control SampleLab Sample ID: LCS 140-88712/1002 Matrix: Air Prep Type: Total/NA Analysis Batch: 88712 Benzene 0.00160 0.00158 ppm v/v 99 70-130 Analyte LCS LCS DUnitResultQualifier %Rec Spike Added %Rec Limits Ethylbenzene 0.00160 0.00158 ppm v/v 98 70-130 Toluene 0.00160 0.00153 ppm v/v 96 70-130 m-Xylene & p-Xylene 0.00320 0.00328 ppm v/v 102 70-130 o-Xylene 0.00160 0.00168 ppm v/v 105 70-130 Methyl tert-butyl ether 0.00160 0.00149 ppm v/v 93 60-140 Naphthalene 0.00160 0.00140 ppm v/v 87 60-140 Xylenes, Total 0.00480 0.00496 ppm v/v 103 70-130 Benzene 0.0051 0.00506 mg/m3 99 70-130 Analyte LCS LCS DUnitResultQualifier %Rec Spike Added %Rec Limits Ethylbenzene 0.0069 0.00684 mg/m3 98 70-130 Toluene 0.0060 0.00577 mg/m3 96 70-130 m-Xylene & p-Xylene 0.014 0.0142 mg/m3 102 70-130 o-Xylene 0.0069 0.00728 mg/m3 105 70-130 Methyl tert-butyl ether 0.0058 0.00538 mg/m3 93 60-140 Naphthalene 0.0084 0.00732 mg/m3 87 60-140 Xylenes, Total 0.021 0.0215 mg/m3 103 70-130 Eurofins Knoxville Page 11 of 21 7/23/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 QC Sample Results Job ID: 140-37557-1Client: AECOM Project/Site: PPL Guilford Greene Method: TO-15 - Volatile Organic Compounds in Ambient Air (Continued) Client Sample ID: Lab Control SampleLab Sample ID: LCS 140-88712/1002 Matrix: Air Prep Type: Total/NA Analysis Batch: 88712 4-Bromofluorobenzene (Surr)60 -140 Surrogate 107 LCS LCS Qualifier Limits%Recovery Client Sample ID: Method BlankLab Sample ID: MB 140-88866/5 Matrix: Air Prep Type: Total/NA Analysis Batch: 88866 RL MDL Benzene ND 0.00020 ppm v/v 07/19/24 06:41 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResultQualifier ND 0.00020 ppm v/v 07/19/24 06:41 1Ethylbenzene ND 0.0010 ppm v/v 07/19/24 06:41 1Toluene ND 0.00020 ppm v/v 07/19/24 06:41 1m-Xylene & p-Xylene ND 0.00020 ppm v/v 07/19/24 06:41 1o-Xylene ND 0.0010 ppm v/v 07/19/24 06:41 1Methyl tert-butyl ether ND 0.00040 ppm v/v 07/19/24 06:41 1Naphthalene ND 0.00040 ppm v/v 07/19/24 06:41 1Xylenes, Total ND 44 ug/m3 07/19/24 06:41 1Total VOC as Octane RL MDL Benzene ND 0.00064 mg/m3 07/19/24 06:41 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResultQualifier ND 0.00087 mg/m3 07/19/24 06:41 1Ethylbenzene ND 0.0038 mg/m3 07/19/24 06:41 1Toluene ND 0.00087 mg/m3 07/19/24 06:41 1m-Xylene & p-Xylene ND 0.00087 mg/m3 07/19/24 06:41 1o-Xylene ND 0.0036 mg/m3 07/19/24 06:41 1Methyl tert-butyl ether ND 0.0021 mg/m3 07/19/24 06:41 1Naphthalene ND 0.0017 mg/m3 07/19/24 06:41 1Xylenes, Total 4-Bromofluorobenzene (Surr)97 60-140 07/19/24 06:41 1 MB MB Surrogate Dil FacPreparedAnalyzedQualifierLimits%Recovery Client Sample ID: Lab Control SampleLab Sample ID: LCS 140-88866/1002 Matrix: Air Prep Type: Total/NA Analysis Batch: 88866 Benzene 0.00160 0.00146 ppm v/v 91 70-130 Analyte LCS LCS DUnitResultQualifier %Rec Spike Added %Rec Limits Ethylbenzene 0.00160 0.00145 ppm v/v 91 70-130 Toluene 0.00160 0.00140 ppm v/v 88 70-130 m-Xylene & p-Xylene 0.00320 0.00310 ppm v/v 97 70-130 o-Xylene 0.00160 0.00156 ppm v/v 97 70-130 Methyl tert-butyl ether 0.00160 0.00137 ppm v/v 86 60-140 Naphthalene 0.00160 0.00125 ppm v/v 78 60-140 Xylenes, Total 0.00480 0.00466 ppm v/v 97 70-130 Benzene 0.0051 0.00466 mg/m3 91 70-130 Analyte LCS LCS DUnitResultQualifier %Rec Spike Added %Rec Limits Ethylbenzene 0.0069 0.00631 mg/m3 91 70-130 Toluene 0.0060 0.00528 mg/m3 88 70-130 Eurofins Knoxville Page 12 of 21 7/23/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 QC Sample Results Job ID: 140-37557-1Client: AECOM Project/Site: PPL Guilford Greene Method: TO-15 - Volatile Organic Compounds in Ambient Air (Continued) Client Sample ID: Lab Control SampleLab Sample ID: LCS 140-88866/1002 Matrix: Air Prep Type: Total/NA Analysis Batch: 88866 m-Xylene & p-Xylene 0.014 0.0135 mg/m3 97 70-130 Analyte LCS LCS DUnitResultQualifier %Rec Spike Added %Rec Limits o-Xylene 0.0069 0.00676 mg/m3 97 70-130 Methyl tert-butyl ether 0.0058 0.00495 mg/m3 86 60-140 Naphthalene 0.0084 0.00656 mg/m3 78 60-140 Xylenes, Total 0.021 0.0202 mg/m3 97 70-130 4-Bromofluorobenzene (Surr)60 -140 Surrogate 107 LCS LCS Qualifier Limits%Recovery Eurofins Knoxville Page 13 of 21 7/23/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 QC Association Summary Job ID: 140-37557-1Client: AECOM Project/Site: PPL Guilford Greene Air - GC/MS VOA Analysis Batch: 88712 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Air TO-15140-37557-2 IN-20240710 Total/NA Air TO-15MB 140-88712/4 Method Blank Total/NA Air TO-15LCS 140-88712/1002 Lab Control Sample Total/NA Analysis Batch: 88866 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Air TO-15140-37557-1 EFF-20240710 Total/NA Air TO-15MB 140-88866/5 Method Blank Total/NA Air TO-15LCS 140-88866/1002 Lab Control Sample Total/NA Eurofins Knoxville Page 14 of 21 7/23/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Lab Chronicle Client: AECOM Job ID: 140-37557-1 Project/Site: PPL Guilford Greene Client Sample ID: EFF-20240710 Lab Sample ID: 140-37557-1 Matrix: AirDate Collected: 07/10/24 10:30 Date Received: 07/11/24 10:00 Analysis TO-15 S1K07/19/24 11:574.57 EET KNX88866 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 30 mL 500 mL Instrument ID:MG Client Sample ID: IN-20240710 Lab Sample ID: 140-37557-2 Matrix: AirDate Collected: 07/10/24 10:45 Date Received: 07/11/24 10:00 Analysis TO-15 S1K07/18/24 00:3056.47 EET KNX88712 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 15 mL 500 mL Instrument ID:MG Client Sample ID: Method Blank Lab Sample ID: MB 140-88712/4 Matrix: AirDate Collected: N/A Date Received: N/A Analysis TO-15 S1K07/17/24 09:511 EET KNX88712 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 200 mL 500 mL Instrument ID:MG Client Sample ID: Method Blank Lab Sample ID: MB 140-88866/5 Matrix: AirDate Collected: N/A Date Received: N/A Analysis TO-15 S1K07/19/24 06:411 EET KNX88866 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 200 mL 500 mL Instrument ID:MG Client Sample ID: Lab Control Sample Lab Sample ID: LCS 140-88712/1002 Matrix: AirDate Collected: N/A Date Received: N/A Analysis TO-15 S1K07/17/24 08:211 EET KNX88712 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 500 mL 500 mL Instrument ID:MG Client Sample ID: Lab Control Sample Lab Sample ID: LCS 140-88866/1002 Matrix: AirDate Collected: N/A Date Received: N/A Analysis TO-15 S1K07/19/24 05:341 EET KNX88866 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 500 mL 500 mL Instrument ID:MG Laboratory References: EET KNX = Eurofins Knoxville, 5815 Middlebrook Pike, Knoxville, TN 37921, TEL (865)291-3000 Eurofins Knoxville Page 15 of 21 7/23/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Method Summary Job ID: 140-37557-1Client: AECOM Project/Site: PPL Guilford Greene Method Method Description LaboratoryProtocol EPATO-15 Volatile Organic Compounds in Ambient Air EET KNX Protocol References: EPA = US Environmental Protection Agency Laboratory References: EET KNX = Eurofins Knoxville, 5815 Middlebrook Pike, Knoxville, TN 37921, TEL (865)291-3000 Eurofins Knoxville Page 16 of 21 7/23/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Sample Summary Client: AECOM Job ID: 140-37557-1 Project/Site: PPL Guilford Greene Lab Sample ID Client Sample ID Matrix Collected Received Asset ID 140-37557-1 EFF-20240710 Air 07/10/24 10:30 07/11/24 10:00 Air Canister (1-Liter) #11831 140-37557-2 IN-20240710 Air 07/10/24 10:45 07/11/24 10:00 Air Canister (1-Liter) #11136 Eurofins KnoxvillePage 17 of 21 7/23/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Page 18 of 21 7/23/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Page 19 of 21 7/23/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Gauge ID:G5 Date/Time:7/11/24 1448 Analyst Sample ID Pressure @ Receipt (-in Hg or +psig)/initial pressurisation (if applicable) Asset #Cleaning Job Cert Type Size (L)Comments BTB 140-37557-a-1 -5.8 11831 140-36809-a-5 B 1 BTB 140-37557-a-2 -8.9/2.7 11136 140-36809-a-7 B 1 Eurofins Knoxville - Air Canister Initial Pressure Check 140-37557-a-1 MS038 r16, 2/12/22 Page 20 of 21 7/23/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Summa Canister Dilution Worksheet Job No.: 140-37557-1Client: AECOM Project/Site: PPL Guilford Greene Canister Preadjusted Lab Sample ID (L)("Hg)(atm)(L)(psig)(atm)(L)Factor Factor Date Analyst Initals Volume Pressure Preadjusted Adjusted Pressure Preadjusted Volume Pressure Adjusted Pressure Adjusted Volume Dilution Final Dilution Initial Volume (mL) 140-37557-1 1 0.76 0.76-7.1 07/17/24 9:344.574.573.4836.5 3.48 ID Pressure Gauge G5 BTB 140-37557-2 1 0.70 0.70-8.9 07/11/24 14:501.681.681.182.7 1.18 G5 BTB 140-37557-2 1 1.14 1.144.27564 07/15/24 9:155.063.013.4435.8 3.44 G5 BTB 140-37557-2 1 1.00 1.000.0 07/15/24 10:3318.573.673.6739.2 3.67 G5 BTB 140-37557-2 1 1.00 1.000.0 07/15/24 11:3156.473.043.0430.0 3.04 G5 BTB Formulae: Preadjusted Volume (L)= ((Preadjusted Pressure ("Hg) + 29.92 "Hg) * Vol L ) / 29.92 "Hg Adjusted Volume (L) = (( Adjusted Pressure (psig) + 14.7 psig )* Vol L ) / 14.7 psig Dilution Factor = Adjusted Volume (L) / Preadjusted Volume (L) Where: 29.92 "Hg = Standard atmospheric pressure in inches of Mercury (“Hg) 14.7 psig = Standard atmospheric pressure in pounds per square inch gauge (psig) Eurofins Knoxville Page 21 of 21 7/23/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 ANALYTICAL REPORT PREPARED FOR Attn: Brandt Morrow AECOM 900 Perimeter Park Drive Suite A Morrisville, North Carolina 27560 Generated 8/22/2024 9:44:03 PM JOB DESCRIPTION PPL Guilford Greene JOB NUMBER 140-38020-1 See page two for job notes and contact information. Knoxville TN 37921 5815 Middlebrook Pike Eurofins Knoxville Page 1 of 21 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Eurofins Knoxville Eurofins Knoxville is a laboratory within TestAmerica Laboratories, Inc., a company within Eurofins Environment Testing Group of Companies Job Notes This report may not be reproduced except in full, and with written approval from the laboratory. The results relate only to the samples tested. For questions please contact the Project Manager at the e-mail address or telephone number listed on this page. The test results in this report relate only to the samples as received by the laboratory and will meet all requirements of the methodology, with any exceptions noted. This report shall not be reproduced except in full, without the express written approval of the laboratory. All questions should be directed to the Eurofins TestAmerica Project Manager. Authorization Generated 8/22/2024 9:44:03 PM Authorized for release by Jamie McKinney, Senior Project Manager Jamie.McKinney@et.eurofinsus.com (865)291-3000 Page 2 of 21 8/22/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Table of Contents Client: AECOM Project/Site: PPL Guilford Greene Laboratory Job ID: 140-38020-1 Page 3 of 21 Eurofins Knoxville8/22/2024 Cover Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 Table of Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 Definitions/Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 Case Narrative . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 Detection Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 Client Sample Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7 Default Detection Limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9 Surrogate Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10 QC Sample Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11 QC Association Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14 Lab Chronicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15 Method Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16 Sample Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17 Chain of Custody . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18 Receipt Checklists . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20 Air Canister Dilution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Definitions/Glossary Job ID: 140-38020-1Client: AECOM Project/Site: PPL Guilford Greene Glossary These commonly used abbreviations may or may not be present in this report. ¤Listed under the "D" column to designate that the result is reported on a dry weight basis Abbreviation %R Percent Recovery CFL Contains Free Liquid CFU Colony Forming Unit CNF Contains No Free Liquid DER Duplicate Error Ratio (normalized absolute difference) Dil Fac Dilution Factor DL Detection Limit (DoD/DOE) DL, RA, RE, IN Indicates a Dilution, Re-analysis, Re-extraction, or additional Initial metals/anion analysis of the sample DLC Decision Level Concentration (Radiochemistry) EDL Estimated Detection Limit (Dioxin) LOD Limit of Detection (DoD/DOE) LOQ Limit of Quantitation (DoD/DOE) MCL EPA recommended "Maximum Contaminant Level" MDA Minimum Detectable Activity (Radiochemistry) MDC Minimum Detectable Concentration (Radiochemistry) MDL Method Detection Limit ML Minimum Level (Dioxin) MPN Most Probable Number MQL Method Quantitation Limit NC Not Calculated ND Not Detected at the reporting limit (or MDL or EDL if shown) NEG Negative / Absent POS Positive / Present PQL Practical Quantitation Limit PRES Presumptive QC Quality Control RER Relative Error Ratio (Radiochemistry) RL Reporting Limit or Requested Limit (Radiochemistry) RPD Relative Percent Difference, a measure of the relative difference between two points TEF Toxicity Equivalent Factor (Dioxin) TEQ Toxicity Equivalent Quotient (Dioxin) TNTC Too Numerous To Count Eurofins Knoxville Page 4 of 21 8/22/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Job Narrative140-38020-1 Receipt The samples were received on 8/14/2024 10:15 AM.Unless otherwise noted below,the samples arrived in good condition,and where required,properly preserved and on ice. Air -GC/MS VOAMethodsTO15LL,TO-14A,TO-15:EPA methods TO-14A and TO-15 specify the use of humidified "zero air"as the blank reagent for canister cleaning,instrument calibration and sample analysis.Ultra-high purity humidified nitrogen from a cryogenic reservoir is used in place of "zero air"by Eurofins TestAmerica Knoxville. No additional analytical or quality issues were noted,other than those described above or in the Definitions/Glossary page. Case Narrative Client: AECOM Job ID: 140-38020-1 Project: PPL Guilford Greene Eurofins Knoxville Job ID: 140-38020-1 Eurofins Knoxville Page 5 of 21 8/22/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Detection Summary Job ID: 140-38020-1Client: AECOM Project/Site: PPL Guilford Greene Client Sample ID: EFF-20240813 Lab Sample ID: 140-38020-1 Benzene RL 0.0040 ppm v/v MDLAnalyteResultQualifier Unit Dil Fac D Method Prep Type Total/NA4.520.029 TO-15 Ethylbenzene 0.0040 ppm v/v Total/NA4.520.0062 TO-15 Toluene 0.020 ppm v/v Total/NA4.520.026 TO-15 m-Xylene & p-Xylene 0.0040 ppm v/v Total/NA4.520.027 TO-15 o-Xylene 0.0040 ppm v/v Total/NA4.520.013 TO-15 Xylenes, Total 0.0080 ppm v/v Total/NA4.520.040 TO-15 Total VOC as Octane 890 ug/m3 Total/NA4.5210000 TO-15 Benzene RL 0.013 mg/m3 MDLAnalyteResultQualifier Unit Dil Fac D Method Prep Type Total/NA4.520.093 TO-15 Ethylbenzene 0.017 mg/m3 Total/NA4.520.027 TO-15 Toluene 0.076 mg/m3 Total/NA4.520.099 TO-15 m-Xylene & p-Xylene 0.017 mg/m3 Total/NA4.520.12 TO-15 o-Xylene 0.017 mg/m3 Total/NA4.520.055 TO-15 Xylenes, Total 0.035 mg/m3 Total/NA4.520.17 TO-15 Client Sample ID: IN-20240813 Lab Sample ID: 140-38020-2 Benzene RL 0.061 ppm v/v MDLAnalyteResultQualifier Unit Dil Fac D Method Prep Type Total/NA53.80.50 TO-15 Ethylbenzene 0.061 ppm v/v Total/NA53.82.7 TO-15 Toluene 0.31 ppm v/v Total/NA53.811 TO-15 m-Xylene & p-Xylene 0.061 ppm v/v Total/NA53.89.1 TO-15 o-Xylene 0.061 ppm v/v Total/NA53.84.0 TO-15 Xylenes, Total 0.12 ppm v/v Total/NA53.813 TO-15 Total VOC as Octane 14000 ug/m3 Total/NA53.8470000 TO-15 Benzene RL 0.20 mg/m3 MDLAnalyteResultQualifier Unit Dil Fac D Method Prep Type Total/NA53.81.6 TO-15 Ethylbenzene 0.27 mg/m3 Total/NA53.812 TO-15 Toluene 1.2 mg/m3 Total/NA53.842 TO-15 m-Xylene & p-Xylene 0.27 mg/m3 Total/NA53.839 TO-15 o-Xylene 0.27 mg/m3 Total/NA53.817 TO-15 Xylenes, Total 0.53 mg/m3 Total/NA53.857 TO-15 Eurofins Knoxville This Detection Summary does not include radiochemical test results. Page 6 of 21 8/22/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Client Sample Results Job ID: 140-38020-1Client: AECOM Project/Site: PPL Guilford Greene Lab Sample ID: 140-38020-1Client Sample ID: EFF-20240813 Matrix: AirDate Collected: 08/13/24 10:15 Date Received: 08/14/24 10:15 Sample Container: Summa Canister 1L Method: EPA TO-15 - Volatile Organic Compounds in Ambient Air RL MDL 0.029 0.0040 ppm v/v 08/21/24 18:59 4.52 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier Benzene 0.0040 ppm v/v 08/21/24 18:59 4.520.0062Ethylbenzene 0.020 ppm v/v 08/21/24 18:59 4.520.026Toluene 0.0040 ppm v/v 08/21/24 18:59 4.520.027m-Xylene & p-Xylene 0.0040 ppm v/v 08/21/24 18:59 4.520.013o-Xylene 0.020 ppm v/v 08/21/24 18:59 4.52NDMethyl tert-butyl ether 0.0080 ppm v/v 08/21/24 18:59 4.52NDNaphthalene 0.0080 ppm v/v 08/21/24 18:59 4.520.040Xylenes, Total 890 ug/m3 08/21/24 18:59 4.5210000Total VOC as Octane RL MDL 0.093 0.013 mg/m3 08/21/24 18:59 4.52 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier Benzene 0.017 mg/m3 08/21/24 18:59 4.520.027Ethylbenzene 0.076 mg/m3 08/21/24 18:59 4.520.099Toluene 0.017 mg/m3 08/21/24 18:59 4.520.12m-Xylene & p-Xylene 0.017 mg/m3 08/21/24 18:59 4.520.055o-Xylene 0.072 mg/m3 08/21/24 18:59 4.52NDMethyl tert-butyl ether 0.042 mg/m3 08/21/24 18:59 4.52NDNaphthalene 0.035 mg/m3 08/21/24 18:59 4.520.17Xylenes, Total 4-Bromofluorobenzene (Surr)91 60-140 08/21/24 18:59 4.52 Surrogate Dil FacAnalyzedPreparedQualifierLimits%Recovery Eurofins Knoxville Page 7 of 21 8/22/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Client Sample Results Job ID: 140-38020-1Client: AECOM Project/Site: PPL Guilford Greene Lab Sample ID: 140-38020-2Client Sample ID: IN-20240813 Matrix: AirDate Collected: 08/13/24 10:35 Date Received: 08/14/24 10:15 Sample Container: Summa Canister 1L Method: EPA TO-15 - Volatile Organic Compounds in Ambient Air RL MDL 0.50 0.061 ppm v/v 08/20/24 00:09 53.8 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier Benzene 0.061 ppm v/v 08/20/24 00:09 53.82.7Ethylbenzene 0.31 ppm v/v 08/20/24 00:09 53.811Toluene 0.061 ppm v/v 08/20/24 00:09 53.89.1m-Xylene & p-Xylene 0.061 ppm v/v 08/20/24 00:09 53.84.0o-Xylene 0.31 ppm v/v 08/20/24 00:09 53.8NDMethyl tert-butyl ether 0.12 ppm v/v 08/20/24 00:09 53.8NDNaphthalene 0.12 ppm v/v 08/20/24 00:09 53.813Xylenes, Total 14000 ug/m3 08/20/24 00:09 53.8470000Total VOC as Octane RL MDL 1.6 0.20 mg/m3 08/20/24 00:09 53.8 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier Benzene 0.27 mg/m3 08/20/24 00:09 53.812Ethylbenzene 1.2 mg/m3 08/20/24 00:09 53.842Toluene 0.27 mg/m3 08/20/24 00:09 53.839m-Xylene & p-Xylene 0.27 mg/m3 08/20/24 00:09 53.817o-Xylene 1.1 mg/m3 08/20/24 00:09 53.8NDMethyl tert-butyl ether 0.64 mg/m3 08/20/24 00:09 53.8NDNaphthalene 0.53 mg/m3 08/20/24 00:09 53.857Xylenes, Total 4-Bromofluorobenzene (Surr)107 60-140 08/20/24 00:09 53.8 Surrogate Dil FacAnalyzedPreparedQualifierLimits%Recovery Eurofins Knoxville Page 8 of 21 8/22/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Default Detection Limits Client: AECOM Job ID: 140-38020-1 Project/Site: PPL Guilford Greene Method: TO-15 - Volatile Organic Compounds in Ambient Air 0.00020Benzene ppm v/v Analyte UnitsMDLRL 0.000033 0.00064Benzene mg/m30.00011 0.00020Ethylbenzene ppm v/v0.000033 0.00087Ethylbenzene mg/m30.00014 0.0010Methyl tert-butyl ether ppm v/v0.00013 0.0036Methyl tert-butyl ether mg/m30.00047 0.00020m-Xylene & p-Xylene ppm v/v0.000073 0.00087m-Xylene & p-Xylene mg/m30.00032 0.00040Naphthalene ppm v/v0.00010 0.0021Naphthalene mg/m30.00052 0.00020o-Xylene ppm v/v0.000038 0.00087o-Xylene mg/m30.00017 0.0010Toluene ppm v/v0.000057 0.0038Toluene mg/m30.00021 44Total VOC as Octane ug/m344 0.00040Xylenes, Total ppm v/v0.000038 0.0017Xylenes, Total mg/m30.00017 Eurofins Knoxville Page 9 of 21 8/22/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Surrogate Summary Job ID: 140-38020-1Client: AECOM Project/Site: PPL Guilford Greene Method: TO-15 - Volatile Organic Compounds in Ambient Air Prep Type: Total/NAMatrix: Air Lab Sample ID Client Sample ID (60-140) BFB 91140-38020-1 Percent Surrogate Recovery (Acceptance Limits) EFF-20240813 107140-38020-2 IN-20240813 109LCS 140-90059/1002 Lab Control Sample 100LCS 140-90159/1002 Lab Control Sample 101MB 140-90059/27 Method Blank 94MB 140-90159/4 Method Blank Surrogate Legend BFB = 4-Bromofluorobenzene (Surr) Eurofins Knoxville Page 10 of 21 8/22/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 QC Sample Results Job ID: 140-38020-1Client: AECOM Project/Site: PPL Guilford Greene Method: TO-15 - Volatile Organic Compounds in Ambient Air Client Sample ID: Method BlankLab Sample ID: MB 140-90059/27 Matrix: Air Prep Type: Total/NA Analysis Batch: 90059 RL MDL Benzene ND 0.00020 ppm v/v 08/19/24 11:05 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResultQualifier ND 0.00020 ppm v/v 08/19/24 11:05 1Ethylbenzene ND 0.0010 ppm v/v 08/19/24 11:05 1Toluene ND 0.00020 ppm v/v 08/19/24 11:05 1m-Xylene & p-Xylene ND 0.00020 ppm v/v 08/19/24 11:05 1o-Xylene ND 0.0010 ppm v/v 08/19/24 11:05 1Methyl tert-butyl ether ND 0.00040 ppm v/v 08/19/24 11:05 1Naphthalene ND 0.00040 ppm v/v 08/19/24 11:05 1Xylenes, Total ND 44 ug/m3 08/19/24 11:05 1Total VOC as Octane RL MDL Benzene ND 0.00064 mg/m3 08/19/24 11:05 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResultQualifier ND 0.00087 mg/m3 08/19/24 11:05 1Ethylbenzene ND 0.0038 mg/m3 08/19/24 11:05 1Toluene ND 0.00087 mg/m3 08/19/24 11:05 1m-Xylene & p-Xylene ND 0.00087 mg/m3 08/19/24 11:05 1o-Xylene ND 0.0036 mg/m3 08/19/24 11:05 1Methyl tert-butyl ether ND 0.0021 mg/m3 08/19/24 11:05 1Naphthalene ND 0.0017 mg/m3 08/19/24 11:05 1Xylenes, Total 4-Bromofluorobenzene (Surr)101 60-140 08/19/24 11:05 1 MB MB Surrogate Dil FacPreparedAnalyzedQualifierLimits%Recovery Client Sample ID: Lab Control SampleLab Sample ID: LCS 140-90059/1002 Matrix: Air Prep Type: Total/NA Analysis Batch: 90059 Benzene 0.00160 0.00193 ppm v/v 121 70-130 Analyte LCS LCS DUnitResultQualifier %Rec Spike Added %Rec Limits Ethylbenzene 0.00160 0.00175 ppm v/v 109 70-130 Toluene 0.00160 0.00179 ppm v/v 112 70-130 m-Xylene & p-Xylene 0.00320 0.00358 ppm v/v 112 70-130 o-Xylene 0.00160 0.00183 ppm v/v 114 70-130 Methyl tert-butyl ether 0.00160 0.00183 ppm v/v 114 60-140 Naphthalene 0.00160 0.00146 ppm v/v 91 60-140 Xylenes, Total 0.00480 0.00541 ppm v/v 113 70-130 Benzene 0.0051 0.00616 mg/m3 121 70-130 Analyte LCS LCS DUnitResultQualifier %Rec Spike Added %Rec Limits Ethylbenzene 0.0069 0.00758 mg/m3 109 70-130 Toluene 0.0060 0.00676 mg/m3 112 70-130 m-Xylene & p-Xylene 0.014 0.0156 mg/m3 112 70-130 o-Xylene 0.0069 0.00793 mg/m3 114 70-130 Methyl tert-butyl ether 0.0058 0.00658 mg/m3 114 60-140 Naphthalene 0.0084 0.00767 mg/m3 91 60-140 Xylenes, Total 0.021 0.0235 mg/m3 113 70-130 Eurofins Knoxville Page 11 of 21 8/22/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 QC Sample Results Job ID: 140-38020-1Client: AECOM Project/Site: PPL Guilford Greene Method: TO-15 - Volatile Organic Compounds in Ambient Air (Continued) Client Sample ID: Lab Control SampleLab Sample ID: LCS 140-90059/1002 Matrix: Air Prep Type: Total/NA Analysis Batch: 90059 4-Bromofluorobenzene (Surr)60 -140 Surrogate 109 LCS LCS Qualifier Limits%Recovery Client Sample ID: Method BlankLab Sample ID: MB 140-90159/4 Matrix: Air Prep Type: Total/NA Analysis Batch: 90159 RL MDL Benzene ND 0.00020 ppm v/v 08/21/24 12:28 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResultQualifier ND 0.00020 ppm v/v 08/21/24 12:28 1Ethylbenzene ND 0.0010 ppm v/v 08/21/24 12:28 1Toluene ND 0.00020 ppm v/v 08/21/24 12:28 1m-Xylene & p-Xylene ND 0.00020 ppm v/v 08/21/24 12:28 1o-Xylene ND 0.0010 ppm v/v 08/21/24 12:28 1Methyl tert-butyl ether ND 0.00040 ppm v/v 08/21/24 12:28 1Naphthalene ND 0.00040 ppm v/v 08/21/24 12:28 1Xylenes, Total ND 44 ug/m3 08/21/24 12:28 1Total VOC as Octane RL MDL Benzene ND 0.00064 mg/m3 08/21/24 12:28 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResultQualifier ND 0.00087 mg/m3 08/21/24 12:28 1Ethylbenzene ND 0.0038 mg/m3 08/21/24 12:28 1Toluene ND 0.00087 mg/m3 08/21/24 12:28 1m-Xylene & p-Xylene ND 0.00087 mg/m3 08/21/24 12:28 1o-Xylene ND 0.0036 mg/m3 08/21/24 12:28 1Methyl tert-butyl ether ND 0.0021 mg/m3 08/21/24 12:28 1Naphthalene ND 0.0017 mg/m3 08/21/24 12:28 1Xylenes, Total 4-Bromofluorobenzene (Surr)94 60-140 08/21/24 12:28 1 MB MB Surrogate Dil FacPreparedAnalyzedQualifierLimits%Recovery Client Sample ID: Lab Control SampleLab Sample ID: LCS 140-90159/1002 Matrix: Air Prep Type: Total/NA Analysis Batch: 90159 Benzene 0.00200 0.00230 ppm v/v 115 70-130 Analyte LCS LCS DUnitResultQualifier %Rec Spike Added %Rec Limits Ethylbenzene 0.00200 0.00219 ppm v/v 110 70-130 Toluene 0.00200 0.00209 ppm v/v 104 70-130 m-Xylene & p-Xylene 0.00400 0.00449 ppm v/v 112 70-130 o-Xylene 0.00200 0.00218 ppm v/v 109 70-130 Methyl tert-butyl ether 0.00200 0.00220 ppm v/v 110 60-140 Naphthalene 0.00200 0.00205 ppm v/v 102 60-140 Xylenes, Total 0.00600 0.00667 ppm v/v 111 70-130 Benzene 0.0064 0.00736 mg/m3 115 70-130 Analyte LCS LCS DUnitResultQualifier %Rec Spike Added %Rec Limits Ethylbenzene 0.0087 0.00952 mg/m3 110 70-130 Toluene 0.0075 0.00786 mg/m3 104 70-130 Eurofins Knoxville Page 12 of 21 8/22/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 QC Sample Results Job ID: 140-38020-1Client: AECOM Project/Site: PPL Guilford Greene Method: TO-15 - Volatile Organic Compounds in Ambient Air (Continued) Client Sample ID: Lab Control SampleLab Sample ID: LCS 140-90159/1002 Matrix: Air Prep Type: Total/NA Analysis Batch: 90159 m-Xylene & p-Xylene 0.017 0.0195 mg/m3 112 70-130 Analyte LCS LCS DUnitResultQualifier %Rec Spike Added %Rec Limits o-Xylene 0.0087 0.00947 mg/m3 109 70-130 Methyl tert-butyl ether 0.0072 0.00792 mg/m3 110 60-140 Naphthalene 0.010 0.0107 mg/m3 102 60-140 Xylenes, Total 0.026 0.0290 mg/m3 111 70-130 4-Bromofluorobenzene (Surr)60 -140 Surrogate 100 LCS LCS Qualifier Limits%Recovery Eurofins Knoxville Page 13 of 21 8/22/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 QC Association Summary Job ID: 140-38020-1Client: AECOM Project/Site: PPL Guilford Greene Air - GC/MS VOA Analysis Batch: 90059 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Air TO-15140-38020-2 IN-20240813 Total/NA Air TO-15MB 140-90059/27 Method Blank Total/NA Air TO-15LCS 140-90059/1002 Lab Control Sample Total/NA Analysis Batch: 90159 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Air TO-15140-38020-1 EFF-20240813 Total/NA Air TO-15MB 140-90159/4 Method Blank Total/NA Air TO-15LCS 140-90159/1002 Lab Control Sample Total/NA Eurofins Knoxville Page 14 of 21 8/22/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Lab Chronicle Client: AECOM Job ID: 140-38020-1 Project/Site: PPL Guilford Greene Client Sample ID: EFF-20240813 Lab Sample ID: 140-38020-1 Matrix: AirDate Collected: 08/13/24 10:15 Date Received: 08/14/24 10:15 Analysis TO-15 S1K08/21/24 18:594.52 EET KNX90159 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 45 mL 500 mL Instrument ID:MS Client Sample ID: IN-20240813 Lab Sample ID: 140-38020-2 Matrix: AirDate Collected: 08/13/24 10:35 Date Received: 08/14/24 10:15 Analysis TO-15 S1K08/20/24 00:0953.8 EET KNX90059 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 35 mL 500 mL Instrument ID:MR Client Sample ID: Method Blank Lab Sample ID: MB 140-90059/27 Matrix: AirDate Collected: N/A Date Received: N/A Analysis TO-15 S1K08/19/24 11:051 EET KNX90059 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 200 mL 500 mL Instrument ID:MR Client Sample ID: Method Blank Lab Sample ID: MB 140-90159/4 Matrix: AirDate Collected: N/A Date Received: N/A Analysis TO-15 S1K08/21/24 12:281 EET KNX90159 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 200 mL 500 mL Instrument ID:MS Client Sample ID: Lab Control Sample Lab Sample ID: LCS 140-90059/1002 Matrix: AirDate Collected: N/A Date Received: N/A Analysis TO-15 S1K08/19/24 10:151 EET KNX90059 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 500 mL 500 mL Instrument ID:MR Client Sample ID: Lab Control Sample Lab Sample ID: LCS 140-90159/1002 Matrix: AirDate Collected: N/A Date Received: N/A Analysis TO-15 S1K08/21/24 11:341 EET KNX90159 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 500 mL 500 mL Instrument ID:MS Laboratory References: EET KNX = Eurofins Knoxville, 5815 Middlebrook Pike, Knoxville, TN 37921, TEL (865)291-3000 Eurofins Knoxville Page 15 of 21 8/22/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Method Summary Job ID: 140-38020-1Client: AECOM Project/Site: PPL Guilford Greene Method Method Description LaboratoryProtocol EPATO-15 Volatile Organic Compounds in Ambient Air EET KNX Protocol References: EPA = US Environmental Protection Agency Laboratory References: EET KNX = Eurofins Knoxville, 5815 Middlebrook Pike, Knoxville, TN 37921, TEL (865)291-3000 Eurofins Knoxville Page 16 of 21 8/22/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Sample Summary Client: AECOM Job ID: 140-38020-1 Project/Site: PPL Guilford Greene Lab Sample ID Client Sample ID Matrix Collected Received Asset ID 140-38020-1 EFF-20240813 Air 08/13/24 10:15 08/14/24 10:15 Air Canister (1-Liter) #11711 140-38020-2 IN-20240813 Air 08/13/24 10:35 08/14/24 10:15 Air Canister (1-Liter) #11609 Eurofins KnoxvillePage 17 of 21 8/22/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Page 18 of 21 8/22/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Page 19 of 21 8/22/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Gauge ID:G5 Date/Time:08/14/24 1635 Analyst Sample ID Pressure @ Receipt (-in Hg or +psig)/initial pressurisation (if applicable) Asset #Cleaning Job Cert Type Size (L)Comments CAL 140-38020-a-1 -4.8 11711 140-37593-a-2 B 1 CAL 140-38020-a-2 -7.5/2.3 11609 140-37593-a-14 B 1 Eurofins Knoxville - Air Canister Initial Pressure Check 140-38020-a-1 MS038 r16, 2/12/22 Page 20 of 21 8/22/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Summa Canister Dilution Worksheet Job No.: 140-38020-1Client: AECOM Project/Site: PPL Guilford Greene Canister Preadjusted Lab Sample ID (L)("Hg)(atm)(L)(psig)(atm)(L)Factor Factor Date Analyst Initals Volume Pressure Preadjusted Adjusted Pressure Preadjusted Volume Pressure Adjusted Pressure Adjusted Volume Dilution Final Dilution Initial Volume (mL) 140-38020-1 1 0.76 0.76-7.1 08/20/24 10:314.524.523.4536.0 3.45 ID Pressure Gauge g5 CAL 140-38020-2 1 0.75 0.75-7.5 08/14/24 16:401.541.541.162.3 1.16 G5 CAL 140-38020-2 1 1.06 1.061.8 08/17/24 9:124.813.123.3133.9 3.31 G5 CAL 140-38020-2 1 1.00 1.000.0 08/17/24 11:0715.943.313.3134.0 3.31 G5 CAL 140-38020-2 1 1.00 1.000.0 08/17/24 14:2453.803.373.3734.9 3.37 G5 CAL Formulae: Preadjusted Volume (L)= ((Preadjusted Pressure ("Hg) + 29.92 "Hg) * Vol L ) / 29.92 "Hg Adjusted Volume (L) = (( Adjusted Pressure (psig) + 14.7 psig )* Vol L ) / 14.7 psig Dilution Factor = Adjusted Volume (L) / Preadjusted Volume (L) Where: 29.92 "Hg = Standard atmospheric pressure in inches of Mercury (“Hg) 14.7 psig = Standard atmospheric pressure in pounds per square inch gauge (psig) Eurofins Knoxville Page 21 of 21 8/22/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 ANALYTICAL REPORT PREPARED FOR Attn: Brandt Morrow AECOM 900 Perimeter Park Drive Suite A Morrisville, North Carolina 27560 Generated 10/2/2024 3:02:29 PM JOB DESCRIPTION PPL Guilford Greene JOB NUMBER 140-38521-1 See page two for job notes and contact information. Knoxville TN 37921 5815 Middlebrook Pike Eurofins Knoxville Page 1 of 20 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Eurofins Knoxville Eurofins Knoxville is a laboratory within TestAmerica Laboratories, Inc., a company within Eurofins Environment Testing Group of Companies Job Notes This report may not be reproduced except in full, and with written approval from the laboratory. The results relate only to the samples tested. For questions please contact the Project Manager at the e-mail address or telephone number listed on this page. The test results in this report relate only to the samples as received by the laboratory and will meet all requirements of the methodology, with any exceptions noted. This report shall not be reproduced except in full, without the express written approval of the laboratory. All questions should be directed to the Eurofins TestAmerica Project Manager. Authorization Generated 10/2/2024 3:02:29 PM Authorized for release by Jamie McKinney, Senior Project Manager Jamie.McKinney@et.eurofinsus.com (865)291-3000 Page 2 of 20 10/2/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Table of Contents Client: AECOM Project/Site: PPL Guilford Greene Laboratory Job ID: 140-38521-1 Page 3 of 20 Eurofins Knoxville10/2/2024 Cover Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 Table of Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 Definitions/Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 Case Narrative . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 Detection Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 Client Sample Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7 Default Detection Limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9 Surrogate Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10 QC Sample Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11 QC Association Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13 Lab Chronicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14 Method Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15 Sample Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16 Chain of Custody . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17 Receipt Checklists . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19 Air Canister Dilution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Definitions/Glossary Job ID: 140-38521-1Client: AECOM Project/Site: PPL Guilford Greene Glossary These commonly used abbreviations may or may not be present in this report. ¤Listed under the "D" column to designate that the result is reported on a dry weight basis Abbreviation %R Percent Recovery CFL Contains Free Liquid CFU Colony Forming Unit CNF Contains No Free Liquid DER Duplicate Error Ratio (normalized absolute difference) Dil Fac Dilution Factor DL Detection Limit (DoD/DOE) DL, RA, RE, IN Indicates a Dilution, Re-analysis, Re-extraction, or additional Initial metals/anion analysis of the sample DLC Decision Level Concentration (Radiochemistry) EDL Estimated Detection Limit (Dioxin) LOD Limit of Detection (DoD/DOE) LOQ Limit of Quantitation (DoD/DOE) MCL EPA recommended "Maximum Contaminant Level" MDA Minimum Detectable Activity (Radiochemistry) MDC Minimum Detectable Concentration (Radiochemistry) MDL Method Detection Limit ML Minimum Level (Dioxin) MPN Most Probable Number MQL Method Quantitation Limit NC Not Calculated ND Not Detected at the reporting limit (or MDL or EDL if shown) NEG Negative / Absent POS Positive / Present PQL Practical Quantitation Limit PRES Presumptive QC Quality Control RER Relative Error Ratio (Radiochemistry) RL Reporting Limit or Requested Limit (Radiochemistry) RPD Relative Percent Difference, a measure of the relative difference between two points TEF Toxicity Equivalent Factor (Dioxin) TEQ Toxicity Equivalent Quotient (Dioxin) TNTC Too Numerous To Count Eurofins Knoxville Page 4 of 20 10/2/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Job Narrative140-38521-1 Receipt The samples were received on 9/19/2024 9:45 AM.Unless otherwise noted below,the samples arrived in good condition,and where required,properly preserved and on ice. Air -GC/MS VOAMethodsTO15LL,TO-14A,TO-15:EPA methods TO-14A and TO-15 specify the use of humidified "zero air"as the blank reagent for canister cleaning,instrument calibration and sample analysis.Ultra-high purity humidified nitrogen from a cryogenic reservoir is used in place of "zero air"by Eurofins TestAmerica Knoxville. No additional analytical or quality issues were noted,other than those described above or in the Definitions/Glossary page. Case Narrative Client: AECOM Job ID: 140-38521-1 Project: PPL Guilford Greene Eurofins Knoxville Job ID: 140-38521-1 Eurofins Knoxville Page 5 of 20 10/2/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Detection Summary Job ID: 140-38521-1Client: AECOM Project/Site: PPL Guilford Greene Client Sample ID: EFF20240918 Lab Sample ID: 140-38521-1 Benzene RL 0.0087 ppm v/v MDLAnalyteResultQualifier Unit Dil Fac D Method Prep Type Total/NA130.024 TO-15 m-Xylene & p-Xylene 0.0087 ppm v/v Total/NA130.018 TO-15 Xylenes, Total 0.017 ppm v/v Total/NA130.018 TO-15 Total VOC as Octane 1900 ug/m3 Total/NA136800TO-15 Benzene RL 0.028 mg/m3 MDLAnalyteResultQualifier Unit Dil Fac D Method Prep Type Total/NA130.077 TO-15 m-Xylene & p-Xylene 0.038 mg/m3 Total/NA130.080 TO-15 Xylenes, Total 0.075 mg/m3 Total/NA130.078 TO-15 Client Sample ID: IN20240918 Lab Sample ID: 140-38521-2 Benzene RL 0.25 ppm v/v MDLAnalyteResultQualifier Unit Dil Fac D Method Prep Type Total/NA564.490.33 TO-15 Ethylbenzene 0.25 ppm v/v Total/NA564.492.8 TO-15 Toluene 1.3 ppm v/v Total/NA564.499.9 TO-15 m-Xylene & p-Xylene 0.25 ppm v/v Total/NA564.4911 TO-15 o-Xylene 0.25 ppm v/v Total/NA564.494.6 TO-15 Xylenes, Total 0.50 ppm v/v Total/NA564.4916 TO-15 Total VOC as Octane 55000 ug/m3 Total/NA564.49460000 TO-15 Benzene RL 0.80 mg/m3 MDLAnalyteResultQualifier Unit Dil Fac D Method Prep Type Total/NA564.491.1 TO-15 Ethylbenzene 1.1 mg/m3 Total/NA564.4912 TO-15 Toluene 4.7 mg/m3 Total/NA564.4937 TO-15 m-Xylene & p-Xylene 1.1 mg/m3 Total/NA564.4947 TO-15 o-Xylene 1.1 mg/m3 Total/NA564.4920 TO-15 Xylenes, Total 2.2 mg/m3 Total/NA564.4968 TO-15 Eurofins Knoxville This Detection Summary does not include radiochemical test results. Page 6 of 20 10/2/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Client Sample Results Job ID: 140-38521-1Client: AECOM Project/Site: PPL Guilford Greene Lab Sample ID: 140-38521-1Client Sample ID: EFF20240918 Matrix: AirDate Collected: 09/18/24 09:45 Date Received: 09/19/24 09:45 Sample Container: Summa Canister 1L Method: EPA TO-15 - Volatile Organic Compounds in Ambient Air RL MDL 0.024 0.0087 ppm v/v 10/02/24 00:01 13 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier Benzene 0.0087 ppm v/v 10/02/24 00:01 13NDEthylbenzene 0.043 ppm v/v 10/02/24 00:01 13NDToluene 0.0087 ppm v/v 10/02/24 00:01 130.018m-Xylene & p-Xylene 0.0087 ppm v/v 10/02/24 00:01 13NDo-Xylene 0.043 ppm v/v 10/02/24 00:01 13NDMethyl tert-butyl ether 0.017 ppm v/v 10/02/24 00:01 13NDNaphthalene 0.017 ppm v/v 10/02/24 00:01 130.018Xylenes, Total 1900 ug/m3 10/02/24 00:01 136800Total VOC as Octane RL MDL 0.077 0.028 mg/m3 10/02/24 00:01 13 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier Benzene 0.038 mg/m3 10/02/24 00:01 13NDEthylbenzene 0.16 mg/m3 10/02/24 00:01 13NDToluene 0.038 mg/m3 10/02/24 00:01 130.080m-Xylene & p-Xylene 0.038 mg/m3 10/02/24 00:01 13NDo-Xylene 0.16 mg/m3 10/02/24 00:01 13NDMethyl tert-butyl ether 0.091 mg/m3 10/02/24 00:01 13NDNaphthalene 0.075 mg/m3 10/02/24 00:01 130.078Xylenes, Total 4-Bromofluorobenzene (Surr)109 60-140 10/02/24 00:01 13 Surrogate Dil FacAnalyzedPreparedQualifierLimits%Recovery Eurofins Knoxville Page 7 of 20 10/2/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Client Sample Results Job ID: 140-38521-1Client: AECOM Project/Site: PPL Guilford Greene Lab Sample ID: 140-38521-2Client Sample ID: IN20240918 Matrix: AirDate Collected: 09/18/24 10:15 Date Received: 09/19/24 09:45 Sample Container: Summa Canister 1L Method: EPA TO-15 - Volatile Organic Compounds in Ambient Air RL MDL 0.33 0.25 ppm v/v 10/02/24 00:50 564.49 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier Benzene 0.25 ppm v/v 10/02/24 00:50 564.492.8Ethylbenzene 1.3 ppm v/v 10/02/24 00:50 564.499.9Toluene 0.25 ppm v/v 10/02/24 00:50 564.4911m-Xylene & p-Xylene 0.25 ppm v/v 10/02/24 00:50 564.494.6o-Xylene 1.3 ppm v/v 10/02/24 00:50 564.49NDMethyl tert-butyl ether 0.50 ppm v/v 10/02/24 00:50 564.49NDNaphthalene 0.50 ppm v/v 10/02/24 00:50 564.4916Xylenes, Total 55000 ug/m3 10/02/24 00:50 564.49460000Total VOC as Octane RL MDL 1.1 0.80 mg/m3 10/02/24 00:50 564.49 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier Benzene 1.1 mg/m3 10/02/24 00:50 564.4912Ethylbenzene 4.7 mg/m3 10/02/24 00:50 564.4937Toluene 1.1 mg/m3 10/02/24 00:50 564.4947m-Xylene & p-Xylene 1.1 mg/m3 10/02/24 00:50 564.4920o-Xylene 4.5 mg/m3 10/02/24 00:50 564.49NDMethyl tert-butyl ether 2.6 mg/m3 10/02/24 00:50 564.49NDNaphthalene 2.2 mg/m3 10/02/24 00:50 564.4968Xylenes, Total 4-Bromofluorobenzene (Surr)107 60-140 10/02/24 00:50 564.49 Surrogate Dil FacAnalyzedPreparedQualifierLimits%Recovery Eurofins Knoxville Page 8 of 20 10/2/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Default Detection Limits Client: AECOM Job ID: 140-38521-1 Project/Site: PPL Guilford Greene Method: TO-15 - Volatile Organic Compounds in Ambient Air 0.00020Benzene ppm v/v Analyte UnitsMDLRL 0.000033 0.00064Benzene mg/m30.00011 0.00020Ethylbenzene ppm v/v0.000033 0.00087Ethylbenzene mg/m30.00014 0.0010Methyl tert-butyl ether ppm v/v0.00013 0.0036Methyl tert-butyl ether mg/m30.00047 0.00020m-Xylene & p-Xylene ppm v/v0.000073 0.00087m-Xylene & p-Xylene mg/m30.00032 0.00040Naphthalene ppm v/v0.00010 0.0021Naphthalene mg/m30.00052 0.00020o-Xylene ppm v/v0.000038 0.00087o-Xylene mg/m30.00017 0.0010Toluene ppm v/v0.000057 0.0038Toluene mg/m30.00021 44Total VOC as Octane ug/m344 0.00040Xylenes, Total ppm v/v0.000038 0.0017Xylenes, Total mg/m30.00017 Eurofins Knoxville Page 9 of 20 10/2/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Surrogate Summary Job ID: 140-38521-1Client: AECOM Project/Site: PPL Guilford Greene Method: TO-15 - Volatile Organic Compounds in Ambient Air Prep Type: Total/NAMatrix: Air Lab Sample ID Client Sample ID (60-140) BFB 109140-38521-1 Percent Surrogate Recovery (Acceptance Limits) EFF20240918 107140-38521-2 IN20240918 126LCS 140-91656/1002 Lab Control Sample 107MB 140-91656/4 Method Blank Surrogate Legend BFB = 4-Bromofluorobenzene (Surr) Eurofins Knoxville Page 10 of 20 10/2/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 QC Sample Results Job ID: 140-38521-1Client: AECOM Project/Site: PPL Guilford Greene Method: TO-15 - Volatile Organic Compounds in Ambient Air Client Sample ID: Method BlankLab Sample ID: MB 140-91656/4 Matrix: Air Prep Type: Total/NA Analysis Batch: 91656 RL MDL Benzene ND 0.00020 ppm v/v 10/01/24 11:46 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResultQualifier ND 0.00020 ppm v/v 10/01/24 11:46 1Ethylbenzene ND 0.0010 ppm v/v 10/01/24 11:46 1Toluene ND 0.00020 ppm v/v 10/01/24 11:46 1m-Xylene & p-Xylene ND 0.00020 ppm v/v 10/01/24 11:46 1o-Xylene ND 0.0010 ppm v/v 10/01/24 11:46 1Methyl tert-butyl ether ND 0.00040 ppm v/v 10/01/24 11:46 1Naphthalene ND 0.00040 ppm v/v 10/01/24 11:46 1Xylenes, Total ND 44 ug/m3 10/01/24 11:46 1Total VOC as Octane RL MDL Benzene ND 0.00064 mg/m3 10/01/24 11:46 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResultQualifier ND 0.00087 mg/m3 10/01/24 11:46 1Ethylbenzene ND 0.0038 mg/m3 10/01/24 11:46 1Toluene ND 0.00087 mg/m3 10/01/24 11:46 1m-Xylene & p-Xylene ND 0.00087 mg/m3 10/01/24 11:46 1o-Xylene ND 0.0036 mg/m3 10/01/24 11:46 1Methyl tert-butyl ether ND 0.0021 mg/m3 10/01/24 11:46 1Naphthalene ND 0.0017 mg/m3 10/01/24 11:46 1Xylenes, Total 4-Bromofluorobenzene (Surr)107 60-140 10/01/24 11:46 1 MB MB Surrogate Dil FacPreparedAnalyzedQualifierLimits%Recovery Client Sample ID: Lab Control SampleLab Sample ID: LCS 140-91656/1002 Matrix: Air Prep Type: Total/NA Analysis Batch: 91656 Benzene 0.00200 0.00222 ppm v/v 111 70-130 Analyte LCS LCS DUnitResultQualifier %Rec Spike Added %Rec Limits Ethylbenzene 0.00200 0.00199 ppm v/v 100 70-130 Toluene 0.00200 0.00207 ppm v/v 104 70-130 m-Xylene & p-Xylene 0.00400 0.00448 ppm v/v 112 70-130 o-Xylene 0.00200 0.00242 ppm v/v 121 70-130 Methyl tert-butyl ether 0.00200 0.00143 ppm v/v 72 60-140 Naphthalene 0.00200 0.00156 ppm v/v 78 60-140 Xylenes, Total 0.00600 0.00690 ppm v/v 115 70-130 Benzene 0.0064 0.00711 mg/m3 111 70-130 Analyte LCS LCS DUnitResultQualifier %Rec Spike Added %Rec Limits Ethylbenzene 0.0087 0.00865 mg/m3 100 70-130 Toluene 0.0075 0.00780 mg/m3 104 70-130 m-Xylene & p-Xylene 0.017 0.0195 mg/m3 112 70-130 o-Xylene 0.0087 0.0105 mg/m3 121 70-130 Methyl tert-butyl ether 0.0072 0.00517 mg/m3 72 60-140 Naphthalene 0.010 0.00819 mg/m3 78 60-140 Xylenes, Total 0.026 0.0300 mg/m3 115 70-130 Eurofins Knoxville Page 11 of 20 10/2/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 QC Sample Results Job ID: 140-38521-1Client: AECOM Project/Site: PPL Guilford Greene Method: TO-15 - Volatile Organic Compounds in Ambient Air (Continued) Client Sample ID: Lab Control SampleLab Sample ID: LCS 140-91656/1002 Matrix: Air Prep Type: Total/NA Analysis Batch: 91656 4-Bromofluorobenzene (Surr)60 -140 Surrogate 126 LCS LCS Qualifier Limits%Recovery Eurofins Knoxville Page 12 of 20 10/2/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 QC Association Summary Job ID: 140-38521-1Client: AECOM Project/Site: PPL Guilford Greene Air - GC/MS VOA Analysis Batch: 91656 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Air TO-15140-38521-1 EFF20240918 Total/NA Air TO-15140-38521-2 IN20240918 Total/NA Air TO-15MB 140-91656/4 Method Blank Total/NA Air TO-15LCS 140-91656/1002 Lab Control Sample Total/NA Eurofins Knoxville Page 13 of 20 10/2/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Lab Chronicle Client: AECOM Job ID: 140-38521-1 Project/Site: PPL Guilford Greene Client Sample ID: EFF20240918 Lab Sample ID: 140-38521-1 Matrix: AirDate Collected: 09/18/24 09:45 Date Received: 09/19/24 09:45 Analysis TO-15 S1K10/02/24 00:0113 EET KNX91656 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 60 mL 500 mL Instrument ID:MG Client Sample ID: IN20240918 Lab Sample ID: 140-38521-2 Matrix: AirDate Collected: 09/18/24 10:15 Date Received: 09/19/24 09:45 Analysis TO-15 S1K10/02/24 00:50564.49 EET KNX91656 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 90 mL 500 mL Instrument ID:MG Client Sample ID: Method Blank Lab Sample ID: MB 140-91656/4 Matrix: AirDate Collected: N/A Date Received: N/A Analysis TO-15 S1K10/01/24 11:461 EET KNX91656 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 200 mL 500 mL Instrument ID:MG Client Sample ID: Lab Control Sample Lab Sample ID: LCS 140-91656/1002 Matrix: AirDate Collected: N/A Date Received: N/A Analysis TO-15 S1K10/01/24 10:231 EET KNX91656 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 500 mL 500 mL Instrument ID:MG Laboratory References: EET KNX = Eurofins Knoxville, 5815 Middlebrook Pike, Knoxville, TN 37921, TEL (865)291-3000 Eurofins Knoxville Page 14 of 20 10/2/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Method Summary Job ID: 140-38521-1Client: AECOM Project/Site: PPL Guilford Greene Method Method Description LaboratoryProtocol EPATO-15 Volatile Organic Compounds in Ambient Air EET KNX Protocol References: EPA = US Environmental Protection Agency Laboratory References: EET KNX = Eurofins Knoxville, 5815 Middlebrook Pike, Knoxville, TN 37921, TEL (865)291-3000 Eurofins Knoxville Page 15 of 20 10/2/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Sample Summary Client: AECOM Job ID: 140-38521-1 Project/Site: PPL Guilford Greene Lab Sample ID Client Sample ID Matrix Collected Received Asset ID 140-38521-1 EFF20240918 Air 09/18/24 09:45 09/19/24 09:45 Air Canister (1-Liter) #11867 140-38521-2 IN20240918 Air 09/18/24 10:15 09/19/24 09:45 Air Canister (1-Liter) #34000646 Eurofins KnoxvillePage 16 of 20 10/2/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Page 17 of 20 10/2/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Page 18 of 20 10/2/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Gauge ID:G5 Date/Time:09/23/24 1706 Analyst Sample ID Pressure @ Receipt (-in Hg or +psig)/initial pressurisation (if applicable) Asset #Cleaning Job Cert Type Size (L)Comments NPD 140-38521-a-1 -3.9 11867 140-38065-a-7 B 1 NPD 140-38521-a-2 -7.0/1.9 34000646 140-38065-a-9 B 1 Eurofins Knoxville - Air Canister Initial Pressure Check 140-38521-a-1 MS038 r16, 2/12/22 Page 19 of 20 10/2/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Summa Canister Dilution Worksheet Job No.: 140-38521-1Client: AECOM Project/Site: PPL Guilford Greene Canister Preadjusted Lab Sample ID (L)("Hg)(atm)(L)(psig)(atm)(L)Factor Factor Date Analyst Initals Volume Pressure Preadjusted Adjusted Pressure Preadjusted Volume Pressure Adjusted Pressure Adjusted Volume Dilution Final Dilution Initial Volume (mL) 140-38521-1 1 0.80 0.80-5.9 09/23/24 17:134.124.123.3133.9 3.31 ID Pressure Gauge G5 NZD 140-38521-1 1 1.00 1.000.0 09/29/24 14:4313.003.163.1631.7 3.16 G5 CAL 140-38521-2 1 0.77 0.77-7.0 09/23/24 17:131.471.471.131.9 1.13 G5 NZD 140-38521-2 1 1.10 1.102.85043 09/25/24 16:344.483.043.3334.2 3.33 G5 CAL 140-38521-2 1 1.00 1.000.0 09/26/24 9:5514.563.253.2533.1 3.25 G5 CAL 140-38521-2 1 1.00 1.000.0 09/26/24 11:1945.863.153.1531.6 3.15 G5 CAL 140-38521-2 1 0.92 0.92-2.5 09/29/24 10:46162.713.553.2533.1 3.25 G5 CAL 140-38521-2 1 1.00 1.000.0 09/29/24 14:40564.493.473.4736.3 3.47 G5 CAL Formulae: Preadjusted Volume (L)= ((Preadjusted Pressure ("Hg) + 29.92 "Hg) * Vol L ) / 29.92 "Hg Adjusted Volume (L) = (( Adjusted Pressure (psig) + 14.7 psig )* Vol L ) / 14.7 psig Dilution Factor = Adjusted Volume (L) / Preadjusted Volume (L) Where: 29.92 "Hg = Standard atmospheric pressure in inches of Mercury (“Hg) 14.7 psig = Standard atmospheric pressure in pounds per square inch gauge (psig) Eurofins Knoxville Page 20 of 20 10/2/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 ANALYTICAL REPORT PREPARED FOR Attn: Brandt Morrow AECOM 900 Perimeter Park Drive Suite A Morrisville, North Carolina 27560 Generated 10/28/2024 7:40:11 PM JOB DESCRIPTION PPL Guilford Greene JOB NUMBER 140-38859-1 See page two for job notes and contact information. Knoxville TN 37921 5815 Middlebrook Pike Eurofins Knoxville Page 1 of 21 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Eurofins Knoxville Eurofins Knoxville is a laboratory within TestAmerica Laboratories, Inc., a company within Eurofins Environment Testing Group of Companies Job Notes This report may not be reproduced except in full, and with written approval from the laboratory. The results relate only to the samples tested. For questions please contact the Project Manager at the e-mail address or telephone number listed on this page. The test results in this report relate only to the samples as received by the laboratory and will meet all requirements of the methodology, with any exceptions noted. This report shall not be reproduced except in full, without the express written approval of the laboratory. All questions should be directed to the Eurofins TestAmerica Project Manager. Authorization Generated 10/28/2024 7:40:11 PM Authorized for release by Jamie McKinney, Senior Project Manager Jamie.McKinney@et.eurofinsus.com (865)291-3000 Page 2 of 21 10/28/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Table of Contents Client: AECOM Project/Site: PPL Guilford Greene Laboratory Job ID: 140-38859-1 Page 3 of 21 Eurofins Knoxville10/28/2024 Cover Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 Table of Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 Definitions/Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 Case Narrative . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 Detection Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 Client Sample Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7 Default Detection Limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9 Surrogate Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10 QC Sample Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11 QC Association Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14 Lab Chronicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15 Method Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16 Sample Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17 Chain of Custody . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18 Receipt Checklists . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20 Air Canister Dilution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Definitions/Glossary Job ID: 140-38859-1Client: AECOM Project/Site: PPL Guilford Greene Glossary These commonly used abbreviations may or may not be present in this report. ☼Listed under the "D" column to designate that the result is reported on a dry weight basis Abbreviation %R Percent Recovery CFL Contains Free Liquid CFU Colony Forming Unit CNF Contains No Free Liquid DER Duplicate Error Ratio (normalized absolute difference) Dil Fac Dilution Factor DL Detection Limit (DoD/DOE) DL, RA, RE, IN Indicates a Dilution, Re-analysis, Re-extraction, or additional Initial metals/anion analysis of the sample DLC Decision Level Concentration (Radiochemistry) EDL Estimated Detection Limit (Dioxin) LOD Limit of Detection (DoD/DOE) LOQ Limit of Quantitation (DoD/DOE) MCL EPA recommended "Maximum Contaminant Level" MDA Minimum Detectable Activity (Radiochemistry) MDC Minimum Detectable Concentration (Radiochemistry) MDL Method Detection Limit ML Minimum Level (Dioxin) MPN Most Probable Number MQL Method Quantitation Limit NC Not Calculated ND Not Detected at the reporting limit (or MDL or EDL if shown) NEG Negative / Absent POS Positive / Present PQL Practical Quantitation Limit PRES Presumptive QC Quality Control RER Relative Error Ratio (Radiochemistry) RL Reporting Limit or Requested Limit (Radiochemistry) RPD Relative Percent Difference, a measure of the relative difference between two points TEF Toxicity Equivalent Factor (Dioxin) TEQ Toxicity Equivalent Quotient (Dioxin) TNTC Too Numerous To Count Eurofins Knoxville Page 4 of 21 10/28/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Job Narrative140-38859-1 Receipt The samples were received on 10/8/2024 9:45 AM.Unless otherwise noted below,the samples arrived in good condition,and where required,properly preserved and on ice. Receipt ExceptionsTheChainofCustody was received without any analyses selected.PROJECT ANALYSE SELECTED PER 1L MONTHLY ORDER DESCRIPTION. Air -GC/MS VOA EPA methods TO-14A and TO-15 specify the use of humidified "zero air"as the blank reagent for canister cleaning,instrument calibration and sample analysis.Ultra-high purity humidified nitrogen from a cryogenic reservoir is used in place of "zero air"by Eurofins TestAmerica Knoxville. No additional analytical or quality issues were noted,other than those described above or in the Definitions/Glossary page. Case Narrative Client: AECOM Job ID: 140-38859-1 Project: PPL Guilford Greene Eurofins Knoxville Job ID: 140-38859-1 Eurofins Knoxville Page 5 of 21 10/28/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Detection Summary Job ID: 140-38859-1Client: AECOM Project/Site: PPL Guilford Greene Client Sample ID: EFF-20241007 Lab Sample ID: 140-38859-1 Benzene RL 0.0020 ppm v/v MDLAnalyteResultQualifier Unit Dil Fac D Method Prep Type Total/NA10.024 TO-15 Ethylbenzene 0.0020 ppm v/v Total/NA10.0085 TO-15 Toluene 0.010 ppm v/v Total/NA10.026 TO-15 m-Xylene & p-Xylene 0.0020 ppm v/v Total/NA10.036 TO-15 o-Xylene 0.0020 ppm v/v Total/NA10.017 TO-15 Xylenes, Total 0.0040 ppm v/v Total/NA10.053 TO-15 Total VOC as Octane 440 ug/m3 Total/NA18400TO-15 Benzene RL 0.0064 mg/m3 MDLAnalyteResultQualifier Unit Dil Fac D Method Prep Type Total/NA10.078 TO-15 Ethylbenzene 0.0087 mg/m3 Total/NA10.037 TO-15 Toluene 0.038 mg/m3 Total/NA10.099 TO-15 m-Xylene & p-Xylene 0.0087 mg/m3 Total/NA10.16 TO-15 o-Xylene 0.0087 mg/m3 Total/NA10.072 TO-15 Xylenes, Total 0.017 mg/m3 Total/NA10.23 TO-15 Client Sample ID: IN-20241007 Lab Sample ID: 140-38859-2 Benzene RL 0.067 ppm v/v MDLAnalyteResultQualifier Unit Dil Fac D Method Prep Type Total/NA18.30.25 TO-15 Ethylbenzene 0.067 ppm v/v Total/NA18.31.9 TO-15 Toluene 0.33 ppm v/v Total/NA18.36.9 TO-15 m-Xylene & p-Xylene 0.067 ppm v/v Total/NA18.37.0 TO-15 o-Xylene 0.067 ppm v/v Total/NA18.32.9 TO-15 Xylenes, Total 0.13 ppm v/v Total/NA18.39.9 TO-15 Total VOC as Octane 15000 ug/m3 Total/NA18.3270000 TO-15 Benzene RL 0.21 mg/m3 MDLAnalyteResultQualifier Unit Dil Fac D Method Prep Type Total/NA18.30.81 TO-15 Ethylbenzene 0.29 mg/m3 Total/NA18.38.2 TO-15 Toluene 1.3 mg/m3 Total/NA18.326 TO-15 m-Xylene & p-Xylene 0.29 mg/m3 Total/NA18.330 TO-15 o-Xylene 0.29 mg/m3 Total/NA18.313 TO-15 Xylenes, Total 0.58 mg/m3 Total/NA18.343 TO-15 Eurofins Knoxville This Detection Summary does not include radiochemical test results. Page 6 of 21 10/28/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Client Sample Results Job ID: 140-38859-1Client: AECOM Project/Site: PPL Guilford Greene Lab Sample ID: 140-38859-1Client Sample ID: EFF-20241007 Matrix: AirDate Collected: 10/07/24 10:45 Date Received: 10/08/24 09:45 Sample Container: Summa Canister 1L Method: EPA TO-15 - Volatile Organic Compounds in Ambient Air RL MDL 0.024 0.0020 ppm v/v 10/16/24 04:05 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier Benzene 0.0020 ppm v/v 10/16/24 04:05 10.0085Ethylbenzene 0.010 ppm v/v 10/16/24 04:05 10.026Toluene 0.0020 ppm v/v 10/16/24 04:05 10.036m-Xylene & p-Xylene 0.0020 ppm v/v 10/16/24 04:05 10.017o-Xylene 0.010 ppm v/v 10/16/24 04:05 1NDMethyl tert-butyl ether 0.0040 ppm v/v 10/16/24 04:05 1NDNaphthalene 0.0040 ppm v/v 10/16/24 04:05 10.053Xylenes, Total 440 ug/m3 10/16/24 04:05 18400Total VOC as Octane RL MDL 0.078 0.0064 mg/m3 10/16/24 04:05 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier Benzene 0.0087 mg/m3 10/16/24 04:05 10.037Ethylbenzene 0.038 mg/m3 10/16/24 04:05 10.099Toluene 0.0087 mg/m3 10/16/24 04:05 10.16m-Xylene & p-Xylene 0.0087 mg/m3 10/16/24 04:05 10.072o-Xylene 0.036 mg/m3 10/16/24 04:05 1NDMethyl tert-butyl ether 0.021 mg/m3 10/16/24 04:05 1NDNaphthalene 0.017 mg/m3 10/16/24 04:05 10.23Xylenes, Total 4-Bromofluorobenzene (Surr)90 60-140 10/16/24 04:05 1 Surrogate Dil FacAnalyzedPreparedQualifierLimits%Recovery Eurofins Knoxville Page 7 of 21 10/28/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Client Sample Results Job ID: 140-38859-1Client: AECOM Project/Site: PPL Guilford Greene Lab Sample ID: 140-38859-2Client Sample ID: IN-20241007 Matrix: AirDate Collected: 10/07/24 11:05 Date Received: 10/08/24 09:45 Sample Container: Summa Canister 1L Method: EPA TO-15 - Volatile Organic Compounds in Ambient Air RL MDL 0.25 0.067 ppm v/v 10/17/24 07:17 18.3 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier Benzene 0.067 ppm v/v 10/17/24 07:17 18.31.9Ethylbenzene 0.33 ppm v/v 10/17/24 07:17 18.36.9Toluene 0.067 ppm v/v 10/17/24 07:17 18.37.0m-Xylene & p-Xylene 0.067 ppm v/v 10/17/24 07:17 18.32.9o-Xylene 0.33 ppm v/v 10/17/24 07:17 18.3NDMethyl tert-butyl ether 0.13 ppm v/v 10/17/24 07:17 18.3NDNaphthalene 0.13 ppm v/v 10/17/24 07:17 18.39.9Xylenes, Total 15000 ug/m3 10/17/24 07:17 18.3270000Total VOC as Octane RL MDL 0.81 0.21 mg/m3 10/17/24 07:17 18.3 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier Benzene 0.29 mg/m3 10/17/24 07:17 18.38.2Ethylbenzene 1.3 mg/m3 10/17/24 07:17 18.326Toluene 0.29 mg/m3 10/17/24 07:17 18.330m-Xylene & p-Xylene 0.29 mg/m3 10/17/24 07:17 18.313o-Xylene 1.2 mg/m3 10/17/24 07:17 18.3NDMethyl tert-butyl ether 0.70 mg/m3 10/17/24 07:17 18.3NDNaphthalene 0.58 mg/m3 10/17/24 07:17 18.343Xylenes, Total 4-Bromofluorobenzene (Surr)95 60-140 10/17/24 07:17 18.3 Surrogate Dil FacAnalyzedPreparedQualifierLimits%Recovery Eurofins Knoxville Page 8 of 21 10/28/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Default Detection Limits0 Client: AECOM Job ID: 140-38859-1 Project/Site: PPL Guilford Greene Method: TO-15 - Volatile Organic Compounds in Ambient Air Benzene Analyte MDLRL 0.000033 ppm v/v0.00020 ppm v/v Benzene 0.00011 mg/m30.00064 mg/m3 Ethylbenzene 0.000046 ppm v/v0.00020 ppm v/v Ethylbenzene 0.00020 mg/m30.00087 mg/m3 Methyl tert-butyl ether 0.00013 ppm v/v0.0010 ppm v/v Methyl tert-butyl ether 0.00047 mg/m30.0036 mg/m3 m-Xylene & p-Xylene 0.000098 ppm v/v0.00020 ppm v/v m-Xylene & p-Xylene 0.00043 mg/m30.00087 mg/m3 Naphthalene 0.00010 ppm v/v0.00040 ppm v/v Naphthalene 0.00052 mg/m30.0021 mg/m3 o-Xylene 0.000049 ppm v/v0.00020 ppm v/v o-Xylene 0.00021 mg/m30.00087 mg/m3 Toluene 0.00016 ppm v/v0.0010 ppm v/v Toluene 0.00060 mg/m30.0038 mg/m3 Total VOC as Octane 44 ug/m344 ug/m3 Xylenes, Total 0.000049 ppm v/v0.00040 ppm v/v Xylenes, Total 0.00021 mg/m30.0017 mg/m3 Eurofins Knoxville Page 9 of 21 10/28/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Surrogate Summary Job ID: 140-38859-1Client: AECOM Project/Site: PPL Guilford Greene Method: TO-15 - Volatile Organic Compounds in Ambient Air Prep Type: Total/NAMatrix: Air Lab Sample ID Client Sample ID (60-140) BFB 90140-38859-1 Percent Surrogate Recovery (Acceptance Limits) EFF-20241007 95140-38859-2 IN-20241007 94LCS 140-92143/1002 Lab Control Sample 97LCS 140-92204/1002 Lab Control Sample 87MB 140-92143/5 Method Blank 84MB 140-92204/24 Method Blank Surrogate Legend BFB = 4-Bromofluorobenzene (Surr) Eurofins Knoxville Page 10 of 21 10/28/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 QC Sample Results Job ID: 140-38859-1Client: AECOM Project/Site: PPL Guilford Greene Method: TO-15 - Volatile Organic Compounds in Ambient Air Client Sample ID: Method BlankLab Sample ID: MB 140-92143/5 Matrix: Air Prep Type: Total/NA Analysis Batch: 92143 RL MDL Benzene ND 0.00020 ppm v/v 10/15/24 12:32 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResultQualifier ND 0.00020 ppm v/v 10/15/24 12:32 1Ethylbenzene ND 0.0010 ppm v/v 10/15/24 12:32 1Toluene ND 0.00020 ppm v/v 10/15/24 12:32 1m-Xylene & p-Xylene ND 0.00020 ppm v/v 10/15/24 12:32 1o-Xylene ND 0.0010 ppm v/v 10/15/24 12:32 1Methyl tert-butyl ether ND 0.00040 ppm v/v 10/15/24 12:32 1Naphthalene ND 0.00040 ppm v/v 10/15/24 12:32 1Xylenes, Total ND 44 ug/m3 10/15/24 12:32 1Total VOC as Octane RL MDL Benzene ND 0.00064 mg/m3 10/15/24 12:32 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResultQualifier ND 0.00087 mg/m3 10/15/24 12:32 1Ethylbenzene ND 0.0038 mg/m3 10/15/24 12:32 1Toluene ND 0.00087 mg/m3 10/15/24 12:32 1m-Xylene & p-Xylene ND 0.00087 mg/m3 10/15/24 12:32 1o-Xylene ND 0.0036 mg/m3 10/15/24 12:32 1Methyl tert-butyl ether ND 0.0021 mg/m3 10/15/24 12:32 1Naphthalene ND 0.0017 mg/m3 10/15/24 12:32 1Xylenes, Total 4-Bromofluorobenzene (Surr)87 60-140 10/15/24 12:32 1 MB MB Surrogate Dil FacPreparedAnalyzedQualifierLimits%Recovery Client Sample ID: Lab Control SampleLab Sample ID: LCS 140-92143/1002 Matrix: Air Prep Type: Total/NA Analysis Batch: 92143 Benzene 0.00200 0.00197 ppm v/v 98 70-130 Analyte LCS LCS DUnitResultQualifier %Rec Spike Added %Rec Limits Ethylbenzene 0.00200 0.00193 ppm v/v 96 70-130 Toluene 0.00200 0.00188 ppm v/v 94 70-130 m-Xylene & p-Xylene 0.00400 0.00406 ppm v/v 101 70-130 o-Xylene 0.00200 0.00196 ppm v/v 98 70-130 Methyl tert-butyl ether 0.00200 0.00174 ppm v/v 87 60-140 Naphthalene 0.00200 0.00215 ppm v/v 107 60-140 Xylenes, Total 0.00600 0.00602 ppm v/v 100 70-130 Benzene 0.0064 0.00628 mg/m3 98 70-130 Analyte LCS LCS DUnitResultQualifier %Rec Spike Added %Rec Limits Ethylbenzene 0.0087 0.00837 mg/m3 96 70-130 Toluene 0.0075 0.00710 mg/m3 94 70-130 m-Xylene & p-Xylene 0.017 0.0176 mg/m3 101 70-130 o-Xylene 0.0087 0.00850 mg/m3 98 70-130 Methyl tert-butyl ether 0.0072 0.00626 mg/m3 87 60-140 Naphthalene 0.010 0.0113 mg/m3 107 60-140 Xylenes, Total 0.026 0.0261 mg/m3 100 70-130 Eurofins Knoxville Page 11 of 21 10/28/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 QC Sample Results Job ID: 140-38859-1Client: AECOM Project/Site: PPL Guilford Greene Method: TO-15 - Volatile Organic Compounds in Ambient Air (Continued) Client Sample ID: Lab Control SampleLab Sample ID: LCS 140-92143/1002 Matrix: Air Prep Type: Total/NA Analysis Batch: 92143 4-Bromofluorobenzene (Surr)60 -140 Surrogate 94 LCS LCS Qualifier Limits%Recovery Client Sample ID: Method BlankLab Sample ID: MB 140-92204/24 Matrix: Air Prep Type: Total/NA Analysis Batch: 92204 RL MDL Benzene ND 0.00020 ppm v/v 10/16/24 13:55 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResultQualifier ND 0.00020 ppm v/v 10/16/24 13:55 1Ethylbenzene ND 0.0010 ppm v/v 10/16/24 13:55 1Toluene ND 0.00020 ppm v/v 10/16/24 13:55 1m-Xylene & p-Xylene ND 0.00020 ppm v/v 10/16/24 13:55 1o-Xylene ND 0.0010 ppm v/v 10/16/24 13:55 1Methyl tert-butyl ether ND 0.00040 ppm v/v 10/16/24 13:55 1Naphthalene ND 0.00040 ppm v/v 10/16/24 13:55 1Xylenes, Total ND 44 ug/m3 10/16/24 13:55 1Total VOC as Octane RL MDL Benzene ND 0.00064 mg/m3 10/16/24 13:55 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResultQualifier ND 0.00087 mg/m3 10/16/24 13:55 1Ethylbenzene ND 0.0038 mg/m3 10/16/24 13:55 1Toluene ND 0.00087 mg/m3 10/16/24 13:55 1m-Xylene & p-Xylene ND 0.00087 mg/m3 10/16/24 13:55 1o-Xylene ND 0.0036 mg/m3 10/16/24 13:55 1Methyl tert-butyl ether ND 0.0021 mg/m3 10/16/24 13:55 1Naphthalene ND 0.0017 mg/m3 10/16/24 13:55 1Xylenes, Total 4-Bromofluorobenzene (Surr)84 60-140 10/16/24 13:55 1 MB MB Surrogate Dil FacPreparedAnalyzedQualifierLimits%Recovery Client Sample ID: Lab Control SampleLab Sample ID: LCS 140-92204/1002 Matrix: Air Prep Type: Total/NA Analysis Batch: 92204 Benzene 0.00200 0.00198 ppm v/v 99 70-130 Analyte LCS LCS DUnitResultQualifier %Rec Spike Added %Rec Limits Ethylbenzene 0.00200 0.00180 ppm v/v 90 70-130 Toluene 0.00200 0.00188 ppm v/v 94 70-130 m-Xylene & p-Xylene 0.00400 0.00381 ppm v/v 95 70-130 o-Xylene 0.00200 0.00190 ppm v/v 95 70-130 Methyl tert-butyl ether 0.00200 0.00179 ppm v/v 89 60-140 Naphthalene 0.00200 0.00216 ppm v/v 108 60-140 Xylenes, Total 0.00600 0.00571 ppm v/v 95 70-130 Benzene 0.0064 0.00631 mg/m3 99 70-130 Analyte LCS LCS DUnitResultQualifier %Rec Spike Added %Rec Limits Ethylbenzene 0.0087 0.00782 mg/m3 90 70-130 Toluene 0.0075 0.00709 mg/m3 94 70-130 Eurofins Knoxville Page 12 of 21 10/28/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 QC Sample Results Job ID: 140-38859-1Client: AECOM Project/Site: PPL Guilford Greene Method: TO-15 - Volatile Organic Compounds in Ambient Air (Continued) Client Sample ID: Lab Control SampleLab Sample ID: LCS 140-92204/1002 Matrix: Air Prep Type: Total/NA Analysis Batch: 92204 m-Xylene & p-Xylene 0.017 0.0166 mg/m3 95 70-130 Analyte LCS LCS DUnitResultQualifier %Rec Spike Added %Rec Limits o-Xylene 0.0087 0.00827 mg/m3 95 70-130 Methyl tert-butyl ether 0.0072 0.00645 mg/m3 89 60-140 Naphthalene 0.010 0.0113 mg/m3 108 60-140 Xylenes, Total 0.026 0.0248 mg/m3 95 70-130 4-Bromofluorobenzene (Surr)60 -140 Surrogate 97 LCS LCS Qualifier Limits%Recovery Eurofins Knoxville Page 13 of 21 10/28/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 QC Association Summary Job ID: 140-38859-1Client: AECOM Project/Site: PPL Guilford Greene Air - GC/MS VOA Analysis Batch: 92143 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Air TO-15140-38859-1 EFF-20241007 Total/NA Air TO-15MB 140-92143/5 Method Blank Total/NA Air TO-15LCS 140-92143/1002 Lab Control Sample Total/NA Analysis Batch: 92204 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Air TO-15140-38859-2 IN-20241007 Total/NA Air TO-15MB 140-92204/24 Method Blank Total/NA Air TO-15LCS 140-92204/1002 Lab Control Sample Total/NA Eurofins Knoxville Page 14 of 21 10/28/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Lab Chronicle Client: AECOM Job ID: 140-38859-1 Project/Site: PPL Guilford Greene Client Sample ID: EFF-20241007 Lab Sample ID: 140-38859-1 Matrix: AirDate Collected: 10/07/24 10:45 Date Received: 10/08/24 09:45 Analysis TO-15 S1K10/16/24 04:051 EET KNX92143 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 20 mL 500 mL Instrument ID:MS Client Sample ID: IN-20241007 Lab Sample ID: 140-38859-2 Matrix: AirDate Collected: 10/07/24 11:05 Date Received: 10/08/24 09:45 Analysis TO-15 S1K10/17/24 07:1718.3 EET KNX92204 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 11 mL 500 mL Instrument ID:MR Client Sample ID: Method Blank Lab Sample ID: MB 140-92143/5 Matrix: AirDate Collected: N/A Date Received: N/A Analysis TO-15 S1K10/15/24 12:321 EET KNX92143 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 200 mL 500 mL Instrument ID:MS Client Sample ID: Method Blank Lab Sample ID: MB 140-92204/24 Matrix: AirDate Collected: N/A Date Received: N/A Analysis TO-15 S1K10/16/24 13:551 EET KNX92204 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 200 mL 500 mL Instrument ID:MR Client Sample ID: Lab Control Sample Lab Sample ID: LCS 140-92143/1002 Matrix: AirDate Collected: N/A Date Received: N/A Analysis TO-15 S1K10/15/24 11:381 EET KNX92143 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 500 mL 500 mL Instrument ID:MS Client Sample ID: Lab Control Sample Lab Sample ID: LCS 140-92204/1002 Matrix: AirDate Collected: N/A Date Received: N/A Analysis TO-15 S1K10/16/24 12:311 EET KNX92204 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 500 mL 500 mL Instrument ID:MR Laboratory References: EET KNX = Eurofins Knoxville, 5815 Middlebrook Pike, Knoxville, TN 37921, TEL (865)291-3000 Eurofins Knoxville Page 15 of 21 10/28/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Method Summary Job ID: 140-38859-1Client: AECOM Project/Site: PPL Guilford Greene Method Method Description LaboratoryProtocol EPATO-15 Volatile Organic Compounds in Ambient Air EET KNX Protocol References: EPA = US Environmental Protection Agency Laboratory References: EET KNX = Eurofins Knoxville, 5815 Middlebrook Pike, Knoxville, TN 37921, TEL (865)291-3000 Eurofins Knoxville Page 16 of 21 10/28/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Sample Summary Client: AECOM Job ID: 140-38859-1 Project/Site: PPL Guilford Greene Lab Sample ID Client Sample ID Matrix Collected Received Asset ID 140-38859-1 EFF-20241007 Air 10/07/24 10:45 10/08/24 09:45 Air Canister (1-Liter) #11720 140-38859-2 IN-20241007 Air 10/07/24 11:05 10/08/24 09:45 Air Canister (1-Liter) #10496 Eurofins KnoxvillePage 17 of 21 10/28/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Page 18 of 21 10/28/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Page 19 of 21 10/28/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Gauge ID:G5 Date/Time:10/10/2024 1055 Analyst Sample ID Pressure @ Receipt (-in Hg or +psig)/initial pressurisation (if applicable) Asset #Cleaning Job Cert Type Size (L)Comments TJH 140-38859-a-1 -4.6 11720 140-38598-a-13 B 1 TJH 140-38859-a-2 -8.6/2.4 10496 140-38598-a-14 B 1 Eurofins Knoxville - Air Canister Initial Pressure Check 140-38859-a-1 MS038 r16, 2/12/22 Page 20 of 21 10/28/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Summa Canister Dilution Worksheet Job No.: 140-38859-1Client: AECOM Project/Site: PPL Guilford Greene Canister Preadjusted Lab Sample ID (L)("Hg)(atm)(L)(psig)(atm)(L)Factor Factor Date Analyst Initals Volume Pressure Preadjusted Adjusted Pressure Preadjusted Volume Pressure Adjusted Pressure Adjusted Volume Dilution Final Dilution Initial Volume (mL) 140-38859-2 1 0.71 0.71-8.6 10/10/24 10:571.631.631.162.4 1.16 ID Pressure Gauge G5 CAL 140-38859-2 1 1.00 1.000.0 10/14/24 8:545.083.113.1131.0 3.11 g5 CAL 140-38859-2 1 1.00 1.000.0 10/14/24 11:1018.303.613.6138.3 3.61 G5 CAL Formulae: Preadjusted Volume (L)= ((Preadjusted Pressure ("Hg) + 29.92 "Hg) * Vol L ) / 29.92 "Hg Adjusted Volume (L) = (( Adjusted Pressure (psig) + 14.7 psig )* Vol L ) / 14.7 psig Dilution Factor = Adjusted Volume (L) / Preadjusted Volume (L) Where: 29.92 "Hg = Standard atmospheric pressure in inches of Mercury (“Hg) 14.7 psig = Standard atmospheric pressure in pounds per square inch gauge (psig) Eurofins Knoxville Page 21 of 21 10/28/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 ANALYTICAL REPORT PREPARED FOR Attn: Brandt Morrow AECOM 900 Perimeter Park Drive Suite A Morrisville, North Carolina 27560 Generated 11/23/2024 6:07:44 PM JOB DESCRIPTION PPL Guilford Greene JOB NUMBER 140-39444-1 See page two for job notes and contact information. Knoxville TN 37921 5815 Middlebrook Pike Eurofins Knoxville Page 1 of 21 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Eurofins Knoxville Eurofins Knoxville is a laboratory within TestAmerica Laboratories, Inc., a company within Eurofins Environment Testing Group of Companies Job Notes This report may not be reproduced except in full, and with written approval from the laboratory. The results relate only to the samples tested. For questions please contact the Project Manager at the e-mail address or telephone number listed on this page. The test results in this report relate only to the samples as received by the laboratory and will meet all requirements of the methodology, with any exceptions noted. This report shall not be reproduced except in full, without the express written approval of the laboratory. All questions should be directed to the Eurofins TestAmerica Project Manager. Authorization Generated 11/23/2024 6:07:44 PM Authorized for release by Jamie McKinney, Senior Project Manager Jamie.McKinney@et.eurofinsus.com (865)291-3000 Page 2 of 21 11/23/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Table of Contents Client: AECOM Project/Site: PPL Guilford Greene Laboratory Job ID: 140-39444-1 Page 3 of 21 Eurofins Knoxville11/23/2024 Cover Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 Table of Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 Definitions/Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 Case Narrative . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 Detection Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 Client Sample Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7 Default Detection Limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9 Surrogate Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10 QC Sample Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11 QC Association Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14 Lab Chronicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15 Method Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16 Sample Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17 Chain of Custody . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18 Receipt Checklists . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20 Air Canister Dilution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Definitions/Glossary Job ID: 140-39444-1Client: AECOM Project/Site: PPL Guilford Greene Glossary These commonly used abbreviations may or may not be present in this report. ☼Listed under the "D" column to designate that the result is reported on a dry weight basis Abbreviation %R Percent Recovery CFL Contains Free Liquid CFU Colony Forming Unit CNF Contains No Free Liquid DER Duplicate Error Ratio (normalized absolute difference) Dil Fac Dilution Factor DL Detection Limit (DoD/DOE) DL, RA, RE, IN Indicates a Dilution, Re-analysis, Re-extraction, or additional Initial metals/anion analysis of the sample DLC Decision Level Concentration (Radiochemistry) EDL Estimated Detection Limit (Dioxin) LOD Limit of Detection (DoD/DOE) LOQ Limit of Quantitation (DoD/DOE) MCL EPA recommended "Maximum Contaminant Level" MDA Minimum Detectable Activity (Radiochemistry) MDC Minimum Detectable Concentration (Radiochemistry) MDL Method Detection Limit ML Minimum Level (Dioxin) MPN Most Probable Number MQL Method Quantitation Limit NC Not Calculated ND Not Detected at the reporting limit (or MDL or EDL if shown) NEG Negative / Absent POS Positive / Present PQL Practical Quantitation Limit PRES Presumptive QC Quality Control RER Relative Error Ratio (Radiochemistry) RL Reporting Limit or Requested Limit (Radiochemistry) RPD Relative Percent Difference, a measure of the relative difference between two points TEF Toxicity Equivalent Factor (Dioxin) TEQ Toxicity Equivalent Quotient (Dioxin) TNTC Too Numerous To Count Eurofins Knoxville Page 4 of 21 11/23/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Job Narrative140-39444-1 Receipt The samples were received on 11/13/2024 9:15 AM.Unless otherwise noted below,the samples arrived in good condition,and where required,properly preserved and on ice. Receipt ExceptionsThecontainerlabelfor the following sample did not match the information listed on the Chain-of-Custody (COC):EFF-20241112 (140-39444-1).The container labels list 34002408,while the COC lists 34002488.Logged per canister label asset id. Air -GC/MS VOA EPA methods TO-14A and TO-15 specify the use of humidified "zero air"as the blank reagent for canister cleaning,instrument calibration and sample analysis.Ultra-high purity humidified nitrogen from a cryogenic reservoir is used in place of "zero air"by Eurofins TestAmerica Knoxville. Method TO-15:The continuing calibration verification (CCV)associated with batch 140-93388 exhibited %difference of >30%for the following analyte(s)Naphthalene;however,the results were within the LCS acceptance limits.The EPA method requires that all target analytes in the continuing calibration verification standard be within 30%difference from the initial calibration.According to the laboratory standard operating procedure,the continuing calibration is acceptable if it meets the laboratory control sample acceptance criteria. No additional analytical or quality issues were noted,other than those described above or in the Definitions/Glossary page. Case Narrative Client: AECOM Job ID: 140-39444-1 Project: PPL Guilford Greene Eurofins Knoxville Job ID: 140-39444-1 Eurofins Knoxville Page 5 of 21 11/23/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Detection Summary Job ID: 140-39444-1Client: AECOM Project/Site: PPL Guilford Greene Client Sample ID: EFF-20241112 Lab Sample ID: 140-39444-1 Benzene RL 0.0078 ppm v/v MDLAnalyteResultQualifier Unit Dil Fac D Method Prep Type Total/NA3.890.011 TO-15 m-Xylene & p-Xylene 0.0078 ppm v/v Total/NA3.890.014 TO-15 Total VOC as Octane 1700 ug/m3 Total/NA3.895900 TO-15 Benzene RL 0.025 mg/m3 MDLAnalyteResultQualifier Unit Dil Fac D Method Prep Type Total/NA3.890.036 TO-15 m-Xylene & p-Xylene 0.034 mg/m3 Total/NA3.890.060 TO-15 Client Sample ID: IN-20241112 Lab Sample ID: 140-39444-2 Benzene RL 0.084 ppm v/v MDLAnalyteResultQualifier Unit Dil Fac D Method Prep Type Total/NA31.530.17 TO-15 Ethylbenzene 0.084 ppm v/v Total/NA31.531.2 TO-15 Toluene 0.42 ppm v/v Total/NA31.534.0 TO-15 m-Xylene & p-Xylene 0.084 ppm v/v Total/NA31.534.3 TO-15 o-Xylene 0.084 ppm v/v Total/NA31.531.8 TO-15 Xylenes, Total 0.17 ppm v/v Total/NA31.536.1 TO-15 Total VOC as Octane 19000 ug/m3 Total/NA31.53200000 TO-15 Benzene RL 0.27 mg/m3 MDLAnalyteResultQualifier Unit Dil Fac D Method Prep Type Total/NA31.530.55 TO-15 Ethylbenzene 0.37 mg/m3 Total/NA31.535.2 TO-15 Toluene 1.6 mg/m3 Total/NA31.5315 TO-15 m-Xylene & p-Xylene 0.37 mg/m3 Total/NA31.5319 TO-15 o-Xylene 0.37 mg/m3 Total/NA31.537.7 TO-15 Xylenes, Total 0.73 mg/m3 Total/NA31.5326 TO-15 Eurofins Knoxville This Detection Summary does not include radiochemical test results. Page 6 of 21 11/23/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Client Sample Results Job ID: 140-39444-1Client: AECOM Project/Site: PPL Guilford Greene Lab Sample ID: 140-39444-1Client Sample ID: EFF-20241112 Matrix: AirDate Collected: 11/12/24 10:15 Date Received: 11/13/24 09:15 Sample Container: Summa Canister 1L Method: EPA TO-15 - Volatile Organic Compounds in Ambient Air RL MDL 0.011 0.0078 ppm v/v 11/20/24 05:57 3.89 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier Benzene 0.0078 ppm v/v 11/20/24 05:57 3.89NDEthylbenzene 0.039 ppm v/v 11/20/24 05:57 3.89NDToluene 0.0078 ppm v/v 11/20/24 05:57 3.890.014m-Xylene & p-Xylene 0.0078 ppm v/v 11/20/24 05:57 3.89NDo-Xylene 0.039 ppm v/v 11/20/24 05:57 3.89NDMethyl tert-butyl ether 0.016 ppm v/v 11/20/24 05:57 3.89NDNaphthalene 0.016 ppm v/v 11/20/24 05:57 3.89NDXylenes, Total 1700 ug/m3 11/20/24 05:57 3.895900Total VOC as Octane RL MDL 0.036 0.025 mg/m3 11/20/24 05:57 3.89 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier Benzene 0.034 mg/m3 11/20/24 05:57 3.89NDEthylbenzene 0.15 mg/m3 11/20/24 05:57 3.89NDToluene 0.034 mg/m3 11/20/24 05:57 3.890.060m-Xylene & p-Xylene 0.034 mg/m3 11/20/24 05:57 3.89NDo-Xylene 0.14 mg/m3 11/20/24 05:57 3.89NDMethyl tert-butyl ether 0.082 mg/m3 11/20/24 05:57 3.89NDNaphthalene 0.068 mg/m3 11/20/24 05:57 3.89NDXylenes, Total 4-Bromofluorobenzene (Surr)102 60-140 11/20/24 05:57 3.89 Surrogate Dil FacAnalyzedPreparedQualifierLimits%Recovery Eurofins Knoxville Page 7 of 21 11/23/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Client Sample Results Job ID: 140-39444-1Client: AECOM Project/Site: PPL Guilford Greene Lab Sample ID: 140-39444-2Client Sample ID: IN-20241112 Matrix: AirDate Collected: 11/12/24 10:30 Date Received: 11/13/24 09:15 Sample Container: Summa Canister 1L Method: EPA TO-15 - Volatile Organic Compounds in Ambient Air RL MDL 0.17 0.084 ppm v/v 11/21/24 06:05 31.53 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier Benzene 0.084 ppm v/v 11/21/24 06:05 31.531.2Ethylbenzene 0.42 ppm v/v 11/21/24 06:05 31.534.0Toluene 0.084 ppm v/v 11/21/24 06:05 31.534.3m-Xylene & p-Xylene 0.084 ppm v/v 11/21/24 06:05 31.531.8o-Xylene 0.42 ppm v/v 11/21/24 06:05 31.53NDMethyl tert-butyl ether 0.17 ppm v/v 11/21/24 06:05 31.53NDNaphthalene 0.17 ppm v/v 11/21/24 06:05 31.536.1Xylenes, Total 19000 ug/m3 11/21/24 06:05 31.53200000Total VOC as Octane RL MDL 0.55 0.27 mg/m3 11/21/24 06:05 31.53 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier Benzene 0.37 mg/m3 11/21/24 06:05 31.535.2Ethylbenzene 1.6 mg/m3 11/21/24 06:05 31.5315Toluene 0.37 mg/m3 11/21/24 06:05 31.5319m-Xylene & p-Xylene 0.37 mg/m3 11/21/24 06:05 31.537.7o-Xylene 1.5 mg/m3 11/21/24 06:05 31.53NDMethyl tert-butyl ether 0.88 mg/m3 11/21/24 06:05 31.53NDNaphthalene 0.73 mg/m3 11/21/24 06:05 31.5326Xylenes, Total 4-Bromofluorobenzene (Surr)87 60-140 11/21/24 06:05 31.53 Surrogate Dil FacAnalyzedPreparedQualifierLimits%Recovery Eurofins Knoxville Page 8 of 21 11/23/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Default Detection Limits0 Client: AECOM Job ID: 140-39444-1 Project/Site: PPL Guilford Greene Method: TO-15 - Volatile Organic Compounds in Ambient Air Benzene Analyte MDLRL 0.000033 ppm v/v0.00020 ppm v/v Benzene 0.00011 mg/m30.00064 mg/m3 Ethylbenzene 0.000046 ppm v/v0.00020 ppm v/v Ethylbenzene 0.00020 mg/m30.00087 mg/m3 Methyl tert-butyl ether 0.00013 ppm v/v0.0010 ppm v/v Methyl tert-butyl ether 0.00047 mg/m30.0036 mg/m3 m-Xylene & p-Xylene 0.000098 ppm v/v0.00020 ppm v/v m-Xylene & p-Xylene 0.00043 mg/m30.00087 mg/m3 Naphthalene 0.00010 ppm v/v0.00040 ppm v/v Naphthalene 0.00052 mg/m30.0021 mg/m3 o-Xylene 0.000049 ppm v/v0.00020 ppm v/v o-Xylene 0.00021 mg/m30.00087 mg/m3 Toluene 0.00016 ppm v/v0.0010 ppm v/v Toluene 0.00060 mg/m30.0038 mg/m3 Total VOC as Octane 44 ug/m344 ug/m3 Xylenes, Total 0.000049 ppm v/v0.00040 ppm v/v Xylenes, Total 0.00021 mg/m30.0017 mg/m3 Eurofins Knoxville Page 9 of 21 11/23/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Surrogate Summary Job ID: 140-39444-1Client: AECOM Project/Site: PPL Guilford Greene Method: TO-15 - Volatile Organic Compounds in Ambient Air Prep Type: Total/NAMatrix: Air Lab Sample ID Client Sample ID (60-140) BFB 102140-39444-1 Percent Surrogate Recovery (Acceptance Limits) EFF-20241112 87140-39444-2 IN-20241112 131LCS 140-93297/1002 Lab Control Sample 90LCS 140-93388/1002 Lab Control Sample 98MB 140-93297/5 Method Blank 86MB 140-93388/5 Method Blank Surrogate Legend BFB = 4-Bromofluorobenzene (Surr) Eurofins Knoxville Page 10 of 21 11/23/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 QC Sample Results Job ID: 140-39444-1Client: AECOM Project/Site: PPL Guilford Greene Method: TO-15 - Volatile Organic Compounds in Ambient Air Client Sample ID: Method BlankLab Sample ID: MB 140-93297/5 Matrix: Air Prep Type: Total/NA Analysis Batch: 93297 RL MDL Benzene ND 0.00020 ppm v/v 11/19/24 12:17 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResultQualifier ND 0.00020 ppm v/v 11/19/24 12:17 1Ethylbenzene ND 0.0010 ppm v/v 11/19/24 12:17 1Toluene ND 0.00020 ppm v/v 11/19/24 12:17 1m-Xylene & p-Xylene ND 0.00020 ppm v/v 11/19/24 12:17 1o-Xylene ND 0.0010 ppm v/v 11/19/24 12:17 1Methyl tert-butyl ether ND 0.00040 ppm v/v 11/19/24 12:17 1Naphthalene ND 0.00040 ppm v/v 11/19/24 12:17 1Xylenes, Total ND 44 ug/m3 11/19/24 12:17 1Total VOC as Octane RL MDL Benzene ND 0.00064 mg/m3 11/19/24 12:17 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResultQualifier ND 0.00087 mg/m3 11/19/24 12:17 1Ethylbenzene ND 0.0038 mg/m3 11/19/24 12:17 1Toluene ND 0.00087 mg/m3 11/19/24 12:17 1m-Xylene & p-Xylene ND 0.00087 mg/m3 11/19/24 12:17 1o-Xylene ND 0.0036 mg/m3 11/19/24 12:17 1Methyl tert-butyl ether ND 0.0021 mg/m3 11/19/24 12:17 1Naphthalene ND 0.0017 mg/m3 11/19/24 12:17 1Xylenes, Total 4-Bromofluorobenzene (Surr)98 60-140 11/19/24 12:17 1 MB MB Surrogate Dil FacPreparedAnalyzedQualifierLimits%Recovery Client Sample ID: Lab Control SampleLab Sample ID: LCS 140-93297/1002 Matrix: Air Prep Type: Total/NA Analysis Batch: 93297 Benzene 0.00200 0.00215 ppm v/v 108 70-130 Analyte LCS LCS DUnitResultQualifier %Rec Spike Added %Rec Limits Ethylbenzene 0.00200 0.00207 ppm v/v 104 70-130 Toluene 0.00200 0.00202 ppm v/v 101 70-130 m-Xylene & p-Xylene 0.00400 0.00501 ppm v/v 125 70-130 o-Xylene 0.00200 0.00255 ppm v/v 127 70-130 Methyl tert-butyl ether 0.00200 0.00149 ppm v/v 75 60-140 Naphthalene 0.00200 0.00221 ppm v/v 110 60-140 Xylenes, Total 0.00600 0.00756 ppm v/v 126 70-130 Benzene 0.0064 0.00688 mg/m3 108 70-130 Analyte LCS LCS DUnitResultQualifier %Rec Spike Added %Rec Limits Ethylbenzene 0.0087 0.00899 mg/m3 104 70-130 Toluene 0.0075 0.00762 mg/m3 101 70-130 m-Xylene & p-Xylene 0.017 0.0217 mg/m3 125 70-130 o-Xylene 0.0087 0.0111 mg/m3 127 70-130 Methyl tert-butyl ether 0.0072 0.00539 mg/m3 75 60-140 Naphthalene 0.010 0.0116 mg/m3 110 60-140 Xylenes, Total 0.026 0.0328 mg/m3 126 70-130 Eurofins Knoxville Page 11 of 21 11/23/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 QC Sample Results Job ID: 140-39444-1Client: AECOM Project/Site: PPL Guilford Greene Method: TO-15 - Volatile Organic Compounds in Ambient Air (Continued) Client Sample ID: Lab Control SampleLab Sample ID: LCS 140-93297/1002 Matrix: Air Prep Type: Total/NA Analysis Batch: 93297 4-Bromofluorobenzene (Surr)60 -140 Surrogate 131 LCS LCS Qualifier Limits%Recovery Client Sample ID: Method BlankLab Sample ID: MB 140-93388/5 Matrix: Air Prep Type: Total/NA Analysis Batch: 93388 RL MDL Benzene ND 0.00020 ppm v/v 11/20/24 10:21 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResultQualifier ND 0.00020 ppm v/v 11/20/24 10:21 1Ethylbenzene ND 0.0010 ppm v/v 11/20/24 10:21 1Toluene ND 0.00020 ppm v/v 11/20/24 10:21 1m-Xylene & p-Xylene ND 0.00020 ppm v/v 11/20/24 10:21 1o-Xylene ND 0.0010 ppm v/v 11/20/24 10:21 1Methyl tert-butyl ether ND 0.00040 ppm v/v 11/20/24 10:21 1Naphthalene ND 0.00040 ppm v/v 11/20/24 10:21 1Xylenes, Total ND 44 ug/m3 11/20/24 10:21 1Total VOC as Octane RL MDL Benzene ND 0.00064 mg/m3 11/20/24 10:21 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResultQualifier ND 0.00087 mg/m3 11/20/24 10:21 1Ethylbenzene ND 0.0038 mg/m3 11/20/24 10:21 1Toluene ND 0.00087 mg/m3 11/20/24 10:21 1m-Xylene & p-Xylene ND 0.00087 mg/m3 11/20/24 10:21 1o-Xylene ND 0.0036 mg/m3 11/20/24 10:21 1Methyl tert-butyl ether ND 0.0021 mg/m3 11/20/24 10:21 1Naphthalene ND 0.0017 mg/m3 11/20/24 10:21 1Xylenes, Total 4-Bromofluorobenzene (Surr)86 60-140 11/20/24 10:21 1 MB MB Surrogate Dil FacPreparedAnalyzedQualifierLimits%Recovery Client Sample ID: Lab Control SampleLab Sample ID: LCS 140-93388/1002 Matrix: Air Prep Type: Total/NA Analysis Batch: 93388 Benzene 0.00200 0.00227 ppm v/v 113 70-130 Analyte LCS LCS DUnitResultQualifier %Rec Spike Added %Rec Limits Ethylbenzene 0.00200 0.00204 ppm v/v 102 70-130 Toluene 0.00200 0.00202 ppm v/v 101 70-130 m-Xylene & p-Xylene 0.00400 0.00417 ppm v/v 104 70-130 o-Xylene 0.00200 0.00199 ppm v/v 100 70-130 Methyl tert-butyl ether 0.00200 0.00193 ppm v/v 97 60-140 Naphthalene 0.00200 0.00261 ppm v/v 131 60-140 Xylenes, Total 0.00600 0.00616 ppm v/v 103 70-130 Benzene 0.0064 0.00725 mg/m3 113 70-130 Analyte LCS LCS DUnitResultQualifier %Rec Spike Added %Rec Limits Ethylbenzene 0.0087 0.00886 mg/m3 102 70-130 Toluene 0.0075 0.00763 mg/m3 101 70-130 Eurofins Knoxville Page 12 of 21 11/23/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 QC Sample Results Job ID: 140-39444-1Client: AECOM Project/Site: PPL Guilford Greene Method: TO-15 - Volatile Organic Compounds in Ambient Air (Continued) Client Sample ID: Lab Control SampleLab Sample ID: LCS 140-93388/1002 Matrix: Air Prep Type: Total/NA Analysis Batch: 93388 m-Xylene & p-Xylene 0.017 0.0181 mg/m3 104 70-130 Analyte LCS LCS DUnitResultQualifier %Rec Spike Added %Rec Limits o-Xylene 0.0087 0.00865 mg/m3 100 70-130 Methyl tert-butyl ether 0.0072 0.00697 mg/m3 97 60-140 Naphthalene 0.010 0.0137 mg/m3 131 60-140 Xylenes, Total 0.026 0.0267 mg/m3 103 70-130 4-Bromofluorobenzene (Surr)60 -140 Surrogate 90 LCS LCS Qualifier Limits%Recovery Eurofins Knoxville Page 13 of 21 11/23/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 QC Association Summary Job ID: 140-39444-1Client: AECOM Project/Site: PPL Guilford Greene Air - GC/MS VOA Analysis Batch: 93297 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Air TO-15140-39444-1 EFF-20241112 Total/NA Air TO-15MB 140-93297/5 Method Blank Total/NA Air TO-15LCS 140-93297/1002 Lab Control Sample Total/NA Analysis Batch: 93388 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Air TO-15140-39444-2 IN-20241112 Total/NA Air TO-15MB 140-93388/5 Method Blank Total/NA Air TO-15LCS 140-93388/1002 Lab Control Sample Total/NA Eurofins Knoxville Page 14 of 21 11/23/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Lab Chronicle Client: AECOM Job ID: 140-39444-1 Project/Site: PPL Guilford Greene Client Sample ID: EFF-20241112 Lab Sample ID: 140-39444-1 Matrix: AirDate Collected: 11/12/24 10:15 Date Received: 11/13/24 09:15 Analysis TO-15 RDR11/20/24 05:573.89 EET KNX93297 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 20 mL 500 mL Instrument ID:MG Client Sample ID: IN-20241112 Lab Sample ID: 140-39444-2 Matrix: AirDate Collected: 11/12/24 10:30 Date Received: 11/13/24 09:15 Analysis TO-15 S1K11/21/24 06:0531.53 EET KNX93388 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 15 mL 500 mL Instrument ID:MS Client Sample ID: Method Blank Lab Sample ID: MB 140-93297/5 Matrix: AirDate Collected: N/A Date Received: N/A Analysis TO-15 RDR11/19/24 12:171 EET KNX93297 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 200 mL 500 mL Instrument ID:MG Client Sample ID: Method Blank Lab Sample ID: MB 140-93388/5 Matrix: AirDate Collected: N/A Date Received: N/A Analysis TO-15 S1K11/20/24 10:211 EET KNX93388 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 200 mL 500 mL Instrument ID:MS Client Sample ID: Lab Control Sample Lab Sample ID: LCS 140-93297/1002 Matrix: AirDate Collected: N/A Date Received: N/A Analysis TO-15 RDR11/19/24 10:471 EET KNX93297 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 500 mL 500 mL Instrument ID:MG Client Sample ID: Lab Control Sample Lab Sample ID: LCS 140-93388/1002 Matrix: AirDate Collected: N/A Date Received: N/A Analysis TO-15 S1K11/20/24 09:121 EET KNX93388 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 500 mL 500 mL Instrument ID:MS Laboratory References: EET KNX = Eurofins Knoxville, 5815 Middlebrook Pike, Knoxville, TN 37921, TEL (865)291-3000 Eurofins Knoxville Page 15 of 21 11/23/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Method Summary Job ID: 140-39444-1Client: AECOM Project/Site: PPL Guilford Greene Method Method Description LaboratoryProtocol EPATO-15 Volatile Organic Compounds in Ambient Air EET KNX Protocol References: EPA = US Environmental Protection Agency Laboratory References: EET KNX = Eurofins Knoxville, 5815 Middlebrook Pike, Knoxville, TN 37921, TEL (865)291-3000 Eurofins Knoxville Page 16 of 21 11/23/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Sample Summary Client: AECOM Job ID: 140-39444-1 Project/Site: PPL Guilford Greene Lab Sample ID Client Sample ID Matrix Collected Received Asset ID 140-39444-1 EFF-20241112 Air 11/12/24 10:15 11/13/24 09:15 Air Canister (1-Liter) #34002408 140-39444-2 IN-20241112 Air 11/12/24 10:30 11/13/24 09:15 Air Canister (1-Liter) #34001939 Eurofins KnoxvillePage 17 of 21 11/23/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Page 18 of 21 11/23/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Page 19 of 21 11/23/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Gauge ID:G5 Date/Time:11/13/24 1345 Analyst Sample ID Pressure @ Receipt (-in Hg or +psig)/initial pressurisation (if applicable) Asset #Cleaning Job Cert Type Size (L)Comments CAL 140-39444-a-1 -5.6 34002408 140-38815-a-7 IND 1 CAL 140-39444-a-2 -7.6/21.8 34001939 140-38815-a-6 IND 1 Accidentally over-pressureized during IPC Eurofins Knoxville - Air Canister Initial Pressure Check 140-39444-a-1 MS038 r16, 2/12/22 Page 20 of 21 11/23/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Summa Canister Dilution Worksheet Job No.: 140-39444-1Client: AECOM Project/Site: PPL Guilford Greene Canister Preadjusted Lab Sample ID (L)("Hg)(atm)(L)(psig)(atm)(L)Factor Factor Date Analyst Initals Volume Pressure Preadjusted Adjusted Pressure Preadjusted Volume Pressure Adjusted Pressure Adjusted Volume Dilution Final Dilution Initial Volume (mL) 140-39444-1 1 0.79 0.79-6.4 11/14/24 9:303.893.893.0530.2 3.05 ID Pressure Gauge G5 CAL 140-39444-2 1 0.75 0.75-7.6 11/13/24 13:553.333.332.4821.8 2.48 g5 CAL 140-39444-2 1 1.00 1.000.0 11/14/24 9:3510.123.043.0430.0 3.04 G5 CAL 140-39444-2 1 1.00 1.000.0 11/14/24 13:0231.533.123.1231.1 3.12 G5 CAL Formulae: Preadjusted Volume (L)= ((Preadjusted Pressure ("Hg) + 29.92 "Hg) * Vol L ) / 29.92 "Hg Adjusted Volume (L) = (( Adjusted Pressure (psig) + 14.7 psig )* Vol L ) / 14.7 psig Dilution Factor = Adjusted Volume (L) / Preadjusted Volume (L) Where: 29.92 "Hg = Standard atmospheric pressure in inches of Mercury (“Hg) 14.7 psig = Standard atmospheric pressure in pounds per square inch gauge (psig) Eurofins Knoxville Page 21 of 21 11/23/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 ANALYTICAL REPORT PREPARED FOR Attn: Brandt Morrow AECOM 900 Perimeter Park Drive Suite A Morrisville, North Carolina 27560 Generated 12/31/2024 9:02:53 AM JOB DESCRIPTION PPL Guilford Greene JOB NUMBER 140-39885-1 See page two for job notes and contact information. Knoxville TN 37921 5815 Middlebrook Pike Eurofins Knoxville Page 1 of 20 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Eurofins Knoxville Eurofins Knoxville is a laboratory within TestAmerica Laboratories, Inc., a company within Eurofins Environment Testing Group of Companies Job Notes This report may not be reproduced except in full, and with written approval from the laboratory. The results relate only to the samples tested. For questions please contact the Project Manager at the e-mail address or telephone number listed on this page. The test results in this report relate only to the samples as received by the laboratory and will meet all requirements of the methodology, with any exceptions noted. This report shall not be reproduced except in full, without the express written approval of the laboratory. All questions should be directed to the Eurofins TestAmerica Project Manager. Authorization Generated 12/31/2024 9:02:53 AM Authorized for release by Jamie McKinney, Senior Project Manager Jamie.McKinney@et.eurofinsus.com (865)291-3000 Page 2 of 20 12/31/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Table of Contents Client: AECOM Project/Site: PPL Guilford Greene Laboratory Job ID: 140-39885-1 Page 3 of 20 Eurofins Knoxville12/31/2024 Cover Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 Table of Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 Definitions/Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 Case Narrative . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 Detection Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 Client Sample Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7 Default Detection Limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9 Surrogate Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10 QC Sample Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11 QC Association Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13 Lab Chronicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14 Method Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15 Sample Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16 Chain of Custody . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17 Receipt Checklists . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19 Air Canister Dilution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Definitions/Glossary Job ID: 140-39885-1Client: AECOM Project/Site: PPL Guilford Greene Glossary These commonly used abbreviations may or may not be present in this report. ☼Listed under the "D" column to designate that the result is reported on a dry weight basis Abbreviation %R Percent Recovery CFL Contains Free Liquid CFU Colony Forming Unit CNF Contains No Free Liquid DER Duplicate Error Ratio (normalized absolute difference) Dil Fac Dilution Factor DL Detection Limit (DoD/DOE) DL, RA, RE, IN Indicates a Dilution, Re-analysis, Re-extraction, or additional Initial metals/anion analysis of the sample DLC Decision Level Concentration (Radiochemistry) EDL Estimated Detection Limit (Dioxin) LOD Limit of Detection (DoD/DOE) LOQ Limit of Quantitation (DoD/DOE) MCL EPA recommended "Maximum Contaminant Level" MDA Minimum Detectable Activity (Radiochemistry) MDC Minimum Detectable Concentration (Radiochemistry) MDL Method Detection Limit ML Minimum Level (Dioxin) MPN Most Probable Number MQL Method Quantitation Limit NC Not Calculated ND Not Detected at the reporting limit (or MDL or EDL if shown) NEG Negative / Absent POS Positive / Present PQL Practical Quantitation Limit PRES Presumptive QC Quality Control RER Relative Error Ratio (Radiochemistry) RL Reporting Limit or Requested Limit (Radiochemistry) RPD Relative Percent Difference, a measure of the relative difference between two points TEF Toxicity Equivalent Factor (Dioxin) TEQ Toxicity Equivalent Quotient (Dioxin) TNTC Too Numerous To Count Eurofins Knoxville Page 4 of 20 12/31/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Job Narrative140-39885-1 Receipt The samples were received on 12/13/2024 9:45 AM.Unless otherwise noted below,the samples arrived in good condition,and where required,properly preserved and on ice. Air -GC/MS VOAMethodTO-15:EPA methods TO-14A and TO-15 specify the use of humidified "zero air"as the blank reagent for canister cleaning,instrument calibration and sample analysis.Ultra-high purity humidified nitrogen from a cryogenic reservoir is used in place of "zero air"by Eurofins TestAmerica Knoxville. Methods TO 15 LL,TO-15:The continuing calibration verification (CCV)associated with batch 140-94478 exhibited %difference of >30%for the following analyte(s)Naphthalene;however,the results were within the LCS acceptance limits.The EPA method requires that all target analytes in the continuing calibration verification standard be within 30%difference from the initialcalibration.According to the laboratory standard operating procedure,the continuing calibration is acceptable if it meets the laboratory control sample acceptance criteria. No additional analytical or quality issues were noted,other than those described above or in the Definitions/Glossary page. Case Narrative Client: AECOM Job ID: 140-39885-1 Project: PPL Guilford Greene Eurofins Knoxville Job ID: 140-39885-1 Eurofins Knoxville Page 5 of 20 12/31/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Detection Summary Job ID: 140-39885-1Client: AECOM Project/Site: PPL Guilford Greene Client Sample ID: EFF-20241212 Lab Sample ID: 140-39885-1 Benzene RL 0.0020 ppm v/v MDLAnalyteResultQualifier Unit Dil Fac D Method Prep Type Total/NA10.014 TO-15 Ethylbenzene 0.0020 ppm v/v Total/NA10.0071 TO-15 Toluene 0.010 ppm v/v Total/NA10.019 TO-15 m-Xylene & p-Xylene 0.0020 ppm v/v Total/NA10.030 TO-15 o-Xylene 0.0020 ppm v/v Total/NA10.014 TO-15 Xylenes, Total 0.0040 ppm v/v Total/NA10.044 TO-15 Total VOC as Octane 440 ug/m3 Total/NA17300TO-15 Benzene RL 0.0064 mg/m3 MDLAnalyteResultQualifier Unit Dil Fac D Method Prep Type Total/NA10.044 TO-15 Ethylbenzene 0.0087 mg/m3 Total/NA10.031 TO-15 Toluene 0.038 mg/m3 Total/NA10.071 TO-15 m-Xylene & p-Xylene 0.0087 mg/m3 Total/NA10.13 TO-15 o-Xylene 0.0087 mg/m3 Total/NA10.061 TO-15 Xylenes, Total 0.017 mg/m3 Total/NA10.19 TO-15 Client Sample ID: INF-20241212 Lab Sample ID: 140-39885-2 Benzene RL 0.063 ppm v/v MDLAnalyteResultQualifier Unit Dil Fac D Method Prep Type Total/NA39.650.26 TO-15 Ethylbenzene 0.063 ppm v/v Total/NA39.652.1 TO-15 Toluene 0.32 ppm v/v Total/NA39.656.0 TO-15 m-Xylene & p-Xylene 0.063 ppm v/v Total/NA39.657.1 TO-15 o-Xylene 0.063 ppm v/v Total/NA39.653.2 TO-15 Xylenes, Total 0.13 ppm v/v Total/NA39.6510 TO-15 Total VOC as Octane 14000 ug/m3 Total/NA39.65370000 TO-15 Benzene RL 0.20 mg/m3 MDLAnalyteResultQualifier Unit Dil Fac D Method Prep Type Total/NA39.650.82 TO-15 Ethylbenzene 0.28 mg/m3 Total/NA39.659.0 TO-15 Toluene 1.2 mg/m3 Total/NA39.6522 TO-15 m-Xylene & p-Xylene 0.28 mg/m3 Total/NA39.6531 TO-15 o-Xylene 0.28 mg/m3 Total/NA39.6514 TO-15 Xylenes, Total 0.55 mg/m3 Total/NA39.6545 TO-15 Eurofins Knoxville This Detection Summary does not include radiochemical test results. Page 6 of 20 12/31/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Client Sample Results Job ID: 140-39885-1Client: AECOM Project/Site: PPL Guilford Greene Lab Sample ID: 140-39885-1Client Sample ID: EFF-20241212 Matrix: AirDate Collected: 12/12/24 11:00 Date Received: 12/13/24 09:45 Sample Container: Summa Canister 1L Method: EPA TO-15 - Volatile Organic Compounds in Ambient Air RL MDL 0.014 0.0020 ppm v/v 12/27/24 21:00 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier Benzene 0.0020 ppm v/v 12/27/24 21:00 10.0071Ethylbenzene 0.010 ppm v/v 12/27/24 21:00 10.019Toluene 0.0020 ppm v/v 12/27/24 21:00 10.030m-Xylene & p-Xylene 0.0020 ppm v/v 12/27/24 21:00 10.014o-Xylene 0.010 ppm v/v 12/27/24 21:00 1NDMethyl tert-butyl ether 0.0040 ppm v/v 12/27/24 21:00 1NDNaphthalene 0.0040 ppm v/v 12/27/24 21:00 10.044Xylenes, Total 440 ug/m3 12/27/24 21:00 17300Total VOC as Octane RL MDL 0.044 0.0064 mg/m3 12/27/24 21:00 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier Benzene 0.0087 mg/m3 12/27/24 21:00 10.031Ethylbenzene 0.038 mg/m3 12/27/24 21:00 10.071Toluene 0.0087 mg/m3 12/27/24 21:00 10.13m-Xylene & p-Xylene 0.0087 mg/m3 12/27/24 21:00 10.061o-Xylene 0.036 mg/m3 12/27/24 21:00 1NDMethyl tert-butyl ether 0.021 mg/m3 12/27/24 21:00 1NDNaphthalene 0.017 mg/m3 12/27/24 21:00 10.19Xylenes, Total 4-Bromofluorobenzene (Surr)95 60-140 12/27/24 21:00 1 Surrogate Dil FacAnalyzedPreparedQualifierLimits%Recovery Eurofins Knoxville Page 7 of 20 12/31/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Client Sample Results Job ID: 140-39885-1Client: AECOM Project/Site: PPL Guilford Greene Lab Sample ID: 140-39885-2Client Sample ID: INF-20241212 Matrix: AirDate Collected: 12/12/24 11:30 Date Received: 12/13/24 09:45 Sample Container: Summa Canister 1L Method: EPA TO-15 - Volatile Organic Compounds in Ambient Air RL MDL 0.26 0.063 ppm v/v 12/27/24 21:52 39.65 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier Benzene 0.063 ppm v/v 12/27/24 21:52 39.652.1Ethylbenzene 0.32 ppm v/v 12/27/24 21:52 39.656.0Toluene 0.063 ppm v/v 12/27/24 21:52 39.657.1m-Xylene & p-Xylene 0.063 ppm v/v 12/27/24 21:52 39.653.2o-Xylene 0.32 ppm v/v 12/27/24 21:52 39.65NDMethyl tert-butyl ether 0.13 ppm v/v 12/27/24 21:52 39.65NDNaphthalene 0.13 ppm v/v 12/27/24 21:52 39.6510Xylenes, Total 14000 ug/m3 12/27/24 21:52 39.65370000Total VOC as Octane RL MDL 0.82 0.20 mg/m3 12/27/24 21:52 39.65 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier Benzene 0.28 mg/m3 12/27/24 21:52 39.659.0Ethylbenzene 1.2 mg/m3 12/27/24 21:52 39.6522Toluene 0.28 mg/m3 12/27/24 21:52 39.6531m-Xylene & p-Xylene 0.28 mg/m3 12/27/24 21:52 39.6514o-Xylene 1.1 mg/m3 12/27/24 21:52 39.65NDMethyl tert-butyl ether 0.67 mg/m3 12/27/24 21:52 39.65NDNaphthalene 0.55 mg/m3 12/27/24 21:52 39.6545Xylenes, Total 4-Bromofluorobenzene (Surr)92 60-140 12/27/24 21:52 39.65 Surrogate Dil FacAnalyzedPreparedQualifierLimits%Recovery Eurofins Knoxville Page 8 of 20 12/31/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Default Detection Limits0 Client: AECOM Job ID: 140-39885-1 Project/Site: PPL Guilford Greene Method: TO-15 - Volatile Organic Compounds in Ambient Air Benzene Analyte MDLRL 0.000033 ppm v/v0.00020 ppm v/v Benzene 0.00011 mg/m30.00064 mg/m3 Ethylbenzene 0.000046 ppm v/v0.00020 ppm v/v Ethylbenzene 0.00020 mg/m30.00087 mg/m3 Methyl tert-butyl ether 0.00013 ppm v/v0.0010 ppm v/v Methyl tert-butyl ether 0.00047 mg/m30.0036 mg/m3 m-Xylene & p-Xylene 0.000098 ppm v/v0.00020 ppm v/v m-Xylene & p-Xylene 0.00043 mg/m30.00087 mg/m3 Naphthalene 0.00010 ppm v/v0.00040 ppm v/v Naphthalene 0.00052 mg/m30.0021 mg/m3 o-Xylene 0.000049 ppm v/v0.00020 ppm v/v o-Xylene 0.00021 mg/m30.00087 mg/m3 Toluene 0.00016 ppm v/v0.0010 ppm v/v Toluene 0.00060 mg/m30.0038 mg/m3 Total VOC as Octane 44 ug/m344 ug/m3 Xylenes, Total 0.000049 ppm v/v0.00040 ppm v/v Xylenes, Total 0.00021 mg/m30.0017 mg/m3 Eurofins Knoxville Page 9 of 20 12/31/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Surrogate Summary Job ID: 140-39885-1Client: AECOM Project/Site: PPL Guilford Greene Method: TO-15 - Volatile Organic Compounds in Ambient Air Prep Type: Total/NAMatrix: Air Lab Sample ID Client Sample ID (60-140) BFB 95140-39885-1 Percent Surrogate Recovery (Acceptance Limits) EFF-20241212 92140-39885-2 INF-20241212 95LCS 140-94478/1002 Lab Control Sample 92MB 140-94478/13 Method Blank Surrogate Legend BFB = 4-Bromofluorobenzene (Surr) Eurofins Knoxville Page 10 of 20 12/31/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 QC Sample Results Job ID: 140-39885-1Client: AECOM Project/Site: PPL Guilford Greene Method: TO-15 - Volatile Organic Compounds in Ambient Air Client Sample ID: Method BlankLab Sample ID: MB 140-94478/13 Matrix: Air Prep Type: Total/NA Analysis Batch: 94478 RL MDL Benzene ND 0.00020 ppm v/v 12/27/24 14:49 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResultQualifier ND 0.00020 ppm v/v 12/27/24 14:49 1Ethylbenzene ND 0.0010 ppm v/v 12/27/24 14:49 1Toluene ND 0.00020 ppm v/v 12/27/24 14:49 1m-Xylene & p-Xylene ND 0.00020 ppm v/v 12/27/24 14:49 1o-Xylene ND 0.0010 ppm v/v 12/27/24 14:49 1Methyl tert-butyl ether ND 0.00040 ppm v/v 12/27/24 14:49 1Naphthalene ND 0.00040 ppm v/v 12/27/24 14:49 1Xylenes, Total ND 44 ug/m3 12/27/24 14:49 1Total VOC as Octane RL MDL Benzene ND 0.00064 mg/m3 12/27/24 14:49 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResultQualifier ND 0.00087 mg/m3 12/27/24 14:49 1Ethylbenzene ND 0.0038 mg/m3 12/27/24 14:49 1Toluene ND 0.00087 mg/m3 12/27/24 14:49 1m-Xylene & p-Xylene ND 0.00087 mg/m3 12/27/24 14:49 1o-Xylene ND 0.0036 mg/m3 12/27/24 14:49 1Methyl tert-butyl ether ND 0.0021 mg/m3 12/27/24 14:49 1Naphthalene ND 0.0017 mg/m3 12/27/24 14:49 1Xylenes, Total 4-Bromofluorobenzene (Surr)92 60-140 12/27/24 14:49 1 MB MB Surrogate Dil FacPreparedAnalyzedQualifierLimits%Recovery Client Sample ID: Lab Control SampleLab Sample ID: LCS 140-94478/1002 Matrix: Air Prep Type: Total/NA Analysis Batch: 94478 Benzene 0.00200 0.00227 ppm v/v 113 70-130 Analyte LCS LCS DUnitResultQualifier %Rec Spike Added %Rec Limits Ethylbenzene 0.00200 0.00222 ppm v/v 111 70-130 Toluene 0.00200 0.00211 ppm v/v 106 70-130 m-Xylene & p-Xylene 0.00400 0.00449 ppm v/v 112 70-130 o-Xylene 0.00200 0.00215 ppm v/v 108 70-130 Methyl tert-butyl ether 0.00200 0.00222 ppm v/v 111 60-140 Naphthalene 0.00200 0.00273 ppm v/v 136 60-140 Xylenes, Total 0.00600 0.00664 ppm v/v 111 70-130 Benzene 0.0064 0.00724 mg/m3 113 70-130 Analyte LCS LCS DUnitResultQualifier %Rec Spike Added %Rec Limits Ethylbenzene 0.0087 0.00962 mg/m3 111 70-130 Toluene 0.0075 0.00795 mg/m3 106 70-130 m-Xylene & p-Xylene 0.017 0.0195 mg/m3 112 70-130 o-Xylene 0.0087 0.00934 mg/m3 108 70-130 Methyl tert-butyl ether 0.0072 0.00801 mg/m3 111 60-140 Naphthalene 0.010 0.0143 mg/m3 136 60-140 Xylenes, Total 0.026 0.0288 mg/m3 111 70-130 Eurofins Knoxville Page 11 of 20 12/31/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 QC Sample Results Job ID: 140-39885-1Client: AECOM Project/Site: PPL Guilford Greene Method: TO-15 - Volatile Organic Compounds in Ambient Air (Continued) Client Sample ID: Lab Control SampleLab Sample ID: LCS 140-94478/1002 Matrix: Air Prep Type: Total/NA Analysis Batch: 94478 4-Bromofluorobenzene (Surr)60 -140 Surrogate 95 LCS LCS Qualifier Limits%Recovery Eurofins Knoxville Page 12 of 20 12/31/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 QC Association Summary Job ID: 140-39885-1Client: AECOM Project/Site: PPL Guilford Greene Air - GC/MS VOA Analysis Batch: 94478 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Air TO-15140-39885-1 EFF-20241212 Total/NA Air TO-15140-39885-2 INF-20241212 Total/NA Air TO-15MB 140-94478/13 Method Blank Total/NA Air TO-15LCS 140-94478/1002 Lab Control Sample Total/NA Eurofins Knoxville Page 13 of 20 12/31/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Lab Chronicle Client: AECOM Job ID: 140-39885-1 Project/Site: PPL Guilford Greene Client Sample ID: EFF-20241212 Lab Sample ID: 140-39885-1 Matrix: AirDate Collected: 12/12/24 11:00 Date Received: 12/13/24 09:45 Analysis TO-15 RDR12/27/24 21:001 EET KNX94478 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 20 mL 500 mL Instrument ID:MS Client Sample ID: INF-20241212 Lab Sample ID: 140-39885-2 Matrix: AirDate Collected: 12/12/24 11:30 Date Received: 12/13/24 09:45 Analysis TO-15 RDR12/27/24 21:5239.65 EET KNX94478 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 25 mL 500 mL Instrument ID:MS Client Sample ID: Method Blank Lab Sample ID: MB 140-94478/13 Matrix: AirDate Collected: N/A Date Received: N/A Analysis TO-15 RDR12/27/24 14:491 EET KNX94478 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 200 mL 500 mL Instrument ID:MS Client Sample ID: Lab Control Sample Lab Sample ID: LCS 140-94478/1002 Matrix: AirDate Collected: N/A Date Received: N/A Analysis TO-15 RDR12/27/24 10:111 EET KNX94478 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 500 mL 500 mL Instrument ID:MS Laboratory References: EET KNX = Eurofins Knoxville, 5815 Middlebrook Pike, Knoxville, TN 37921, TEL (865)291-3000 Eurofins Knoxville Page 14 of 20 12/31/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Method Summary Job ID: 140-39885-1Client: AECOM Project/Site: PPL Guilford Greene Method Method Description LaboratoryProtocol EPATO-15 Volatile Organic Compounds in Ambient Air EET KNX Protocol References: EPA = US Environmental Protection Agency Laboratory References: EET KNX = Eurofins Knoxville, 5815 Middlebrook Pike, Knoxville, TN 37921, TEL (865)291-3000 Eurofins Knoxville Page 15 of 20 12/31/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Sample Summary Client: AECOM Job ID: 140-39885-1 Project/Site: PPL Guilford Greene Lab Sample ID Client Sample ID Matrix Collected Received Asset ID 140-39885-1 EFF-20241212 Air 12/12/24 11:00 12/13/24 09:45 Air Canister (1-Liter) #34001245 140-39885-2 INF-20241212 Air 12/12/24 11:30 12/13/24 09:45 Air Canister (1-Liter) #34000332 Eurofins KnoxvillePage 16 of 20 12/31/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Page 17 of 20 12/31/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Page 18 of 20 12/31/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Gauge ID:G5 Date/Time:12/14/2024 1605 Analyst Sample ID Pressure @ Receipt (-in Hg or +psig)/initial pressurisation (if applicable) Asset #Cleaning Job Cert Type Size (L)Comments TJH 140-39885-a-1 -4.9 34001245 140-39356-a-16 B 1 TJH 140-39885-a-2 -6.9 34000332 140-39356-a-2 B 1 Eurofins Knoxville - Air Canister Initial Pressure Check 140-39885-a-1 MS038 r16, 2/12/22 Page 19 of 20 12/31/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Summa Canister Dilution Worksheet Job No.: 140-39885-1Client: AECOM Project/Site: PPL Guilford Greene Canister Preadjusted Lab Sample ID (L)("Hg)(atm)(L)(psig)(atm)(L)Factor Factor Date Analyst Initals Volume Pressure Preadjusted Adjusted Pressure Preadjusted Volume Pressure Adjusted Pressure Adjusted Volume Dilution Final Dilution Initial Volume (mL) 140-39885-2 1 0.75 0.75-7.4 12/26/24 12:054.094.093.0730.5 3.07 ID Pressure Gauge g5 CAL 140-39885-2 1 1.00 1.000.0 12/26/24 13:2512.893.163.1631.7 3.16 g5 CAL 140-39885-2 1 1.00 1.000.0 12/27/24 11:2839.653.073.0730.5 3.07 g5 CAL Formulae: Preadjusted Volume (L)= ((Preadjusted Pressure ("Hg) + 29.92 "Hg) * Vol L ) / 29.92 "Hg Adjusted Volume (L) = (( Adjusted Pressure (psig) + 14.7 psig )* Vol L ) / 14.7 psig Dilution Factor = Adjusted Volume (L) / Preadjusted Volume (L) Where: 29.92 "Hg = Standard atmospheric pressure in inches of Mercury (“Hg) 14.7 psig = Standard atmospheric pressure in pounds per square inch gauge (psig) Eurofins Knoxville Page 20 of 20 12/31/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 AECOM Semiannual Report July – December 2024 Appendix B Laboratory Analytical Report – Groundwater 12/12/24 Technical Report for Plantation Pipeline Company URSNCM: Plantation Pipeline Guilford Greene, Quaker Landings Rd, Greensboro, NC 60724847 SGS Job Number: FC19579 Sampling Dates: 10/15/24 - 10/16/24 Report to: AECOM, Inc 5438 Wade Park Blvd Suite 200 Raleigh, NC 27607 brandt.morrow@aecom.com; teresa.amentt@aecom.com ATTN: Brandt Morrow Total number of pages in report: Certifications: FL(E83510), LA(03051), KS(E-10327), NC(573), NJ(FL002), NY(12022), SC(96038001) DoD ELAP(ANAB L2229), AZ(AZ0806), CA(2937), TX(T104704404), PA(68-03573), VA(460177), AL, AK, AR, CT, IA, KY, MA, MI. MS, ND, NH, NV, OK, OR, IL, UT, VT, WA, WI, WV This report shall not be reproduced, except in its entirety, without the written approval of SGS. Test results relate only to samples analyzed. SGS North America Inc.  4405 Vineland Road  Suite C-15  Orlando, FL 32811  tel: 407-425-6700  Test results contained within this data package meet the requirements of the National Environmental Laboratory Accreditation Program and/or state specific certification programs as applicable unless noted in the narrative, comments or footnotes. Client Service contact: Muna Mohammed 407-425-6700 Norm Farmer Technical Director Orlando, FL 12/12/24 Reissue #1 e-Hardcopy 2.0 Automated Report 51 SGS is the sole authority for authorizing edits or modifications to this document. Unauthorized modification of this report is strictly prohibited. Review standard terms at: http://www.sgs.com/en/terms-and-conditions The results set forth herein are provided by SGS North America Inc. Please share your ideas about how we can serve you better at: EHS.US.CustomerCare@sgs.com 1 of 51 FC19579 Florida ♦ 4405 Vineland Road ♦ Suite C-15 ♦ Orlando, FL 32811 ♦ tel: 407 425-6700 ♦ fax: 407 425-0707 December 12, 2024 Ms. Teresa Amentt AECOM 5438 Wade Park Blvd Suite 200 Raleigh, NC 27607 RE: SGS North America Inc. - Orlando job FC19579 Reissue Dear Ms. Jennings, The final report for job number FC19579 has been edited to reflect requested corrections. These edits have been incorporated into the revised report. MTBE has been reported on sample #15. SGS North America Inc. - Orlando apologies for any inconvenience this may have caused. Please feel free to contact us if we can be of further assistance. Sincerely, SGS North America Inc. - Orlando 2 of 51 FC19579 Table of Contents -1- Sections: Section 1: Sample Summary ...................................................................................................4 Section 2: Summary of Hits ....................................................................................................6 Section 3: Sample Results ........................................................................................................9 3.1: FC19579-1: 2W1-20241015 .........................................................................................10 3.2: FC19579-2: 2W3-20241015 .........................................................................................11 3.3: FC19579-3: 2W4-20241015 .........................................................................................12 3.4: FC19579-4: 2W6-20241015 .........................................................................................13 3.5: FC19579-5: 2W7-20241015 .........................................................................................14 3.6: FC19579-6: 2W11-20241015 .......................................................................................15 3.7: FC19579-7: 2W13-20241015 .......................................................................................16 3.8: FC19579-8: 2W14-20241015 .......................................................................................17 3.9: FC19579-9: 2W18-20241015 .......................................................................................18 3.10: FC19579-10: 2W22-20241015 ...................................................................................19 3.11: FC19579-11: 2W23-20241015 ...................................................................................20 3.12: FC19579-12: 2W28-20241015 ...................................................................................21 3.13: FC19579-13: 2W29-20241015 ...................................................................................22 3.14: FC19579-14: 2W30-20241015 ...................................................................................23 3.15: FC19579-15: 2W31-20241015 ...................................................................................24 3.16: FC19579-16: DW1-20241015 ....................................................................................25 3.17: FC19579-17: AS1-20241015 ......................................................................................26 3.18: FC19579-18: AS9-20241015 ......................................................................................27 3.19: FC19579-19: AS10-20241015 ....................................................................................28 3.20: FC19579-20: 2W25-20241016 ...................................................................................29 3.21: FC19579-21: 2W27-20241016 ...................................................................................30 3.22: FC19579-22: TRIP BLANK .......................................................................................31 Section 4: Misc. Forms ............................................................................................................32 4.1: Chain of Custody ...........................................................................................................33 Section 5: MS Volatiles - QC Data Summaries .....................................................................36 5.1: Method Blank Summary ................................................................................................37 5.2: Blank Spike Summary ...................................................................................................42 5.3: Matrix Spike/Matrix Spike Duplicate Summary ...........................................................47 1 2 3 4 5 3 of 51 FC19579 SGS North America Inc. Sample Summary Plantation Pipeline Company Job No:FC19579 URSNCM: Plantation Pipeline Guilford Greene, Quaker Landings Rd, Greensboro, NC Project No: 60724847 Sample Collected Matrix Client Number Date Time By Received Code Type Sample ID This report contains results reported as ND = Not detected. The following applies: Organics ND = Not detected above the MDL FC19579-1 10/15/24 10:45 SM 10/17/24 AQ Ground Water 2W1-20241015 FC19579-2 10/15/24 11:10 SM 10/17/24 AQ Ground Water 2W3-20241015 FC19579-3 10/15/24 13:30 SM 10/17/24 AQ Ground Water 2W4-20241015 FC19579-4 10/15/24 15:40 SM 10/17/24 AQ Ground Water 2W6-20241015 FC19579-5 10/15/24 13:15 SM 10/17/24 AQ Ground Water 2W7-20241015 FC19579-6 10/15/24 14:15 SM 10/17/24 AQ Ground Water 2W11-20241015 FC19579-7 10/15/24 12:50 SM 10/17/24 AQ Ground Water 2W13-20241015 FC19579-8 10/15/24 14:30 SM 10/17/24 AQ Ground Water 2W14-20241015 FC19579-9 10/15/24 10:15 SM 10/17/24 AQ Ground Water 2W18-20241015 FC19579-10 10/15/24 11:00 SM 10/17/24 AQ Ground Water 2W22-20241015 FC19579-11 10/15/24 10:35 SM 10/17/24 AQ Ground Water 2W23-20241015 FC19579-12 10/15/24 15:20 SM 10/17/24 AQ Ground Water 2W28-20241015 4 of 51 FC19579 1 SGS North America Inc. Sample Summary (continued) Plantation Pipeline Company Job No:FC19579 URSNCM: Plantation Pipeline Guilford Greene, Quaker Landings Rd, Greensboro, NC Project No: 60724847 Sample Collected Matrix Client Number Date Time By Received Code Type Sample ID FC19579-13 10/15/24 16:00 SM 10/17/24 AQ Ground Water 2W29-20241015 FC19579-14 10/15/24 13:45 SM 10/17/24 AQ Ground Water 2W30-20241015 FC19579-15 10/15/24 14:00 SM 10/17/24 AQ Ground Water 2W31-20241015 FC19579-16 10/15/24 10:55 SM 10/17/24 AQ Ground Water DW1-20241015 FC19579-17 10/15/24 15:00 SM 10/17/24 AQ Ground Water AS1-20241015 FC19579-18 10/15/24 12:55 SM 10/17/24 AQ Ground Water AS9-20241015 FC19579-19 10/15/24 12:25 SM 10/17/24 AQ Ground Water AS10-20241015 FC19579-20 10/16/24 09:15 SM 10/17/24 AQ Ground Water 2W25-20241016 FC19579-21 10/16/24 10:00 SM 10/17/24 AQ Ground Water 2W27-20241016 FC19579-22 10/15/24 00:00 SM 10/17/24 AQ Trip Blank Water TRIP BLANK 5 of 51 FC19579 1 Summary of Hits Page 1 of 3 Job Number:FC19579 Account:Plantation Pipeline Company Project:URSNCM: Plantation Pipeline Guilford Greene, Quaker Landings Rd, Greensboro, NC Collected:10/15/24 thru 10/16/24 Lab Sample ID Client Sample ID Result/ Analyte Qual RL MDL Units Method FC19579-1 2W1-20241015 No hits reported in this sample. FC19579-2 2W3-20241015 No hits reported in this sample. FC19579-3 2W4-20241015 Methyl Tert Butyl Ether 227 5.0 1.1 ug/l SW846 8260D FC19579-4 2W6-20241015 Toluene 57.0 5.0 1.5 ug/l SW846 8260D Ethylbenzene 141 5.0 1.8 ug/l SW846 8260D Xylene (total)1980 60 14 ug/l SW846 8260D FC19579-5 2W7-20241015 Toluene 0.64 J 1.0 0.30 ug/l SW846 8260D Xylene (total)1.0 J 3.0 0.72 ug/l SW846 8260D Methyl Tert Butyl Ether 8.5 1.0 0.23 ug/l SW846 8260D FC19579-6 2W11-20241015 No hits reported in this sample. FC19579-7 2W13-20241015 No hits reported in this sample. FC19579-8 2W14-20241015 Benzene 0.54 J 1.0 0.31 ug/l SW846 8260D Toluene 0.84 J 1.0 0.30 ug/l SW846 8260D Ethylbenzene 0.40 J 1.0 0.36 ug/l SW846 8260D Xylene (total)1.6 J 3.0 0.72 ug/l SW846 8260D FC19579-9 2W18-20241015 No hits reported in this sample. 6 of 51 FC19579 2 Summary of Hits Page 2 of 3 Job Number:FC19579 Account:Plantation Pipeline Company Project:URSNCM: Plantation Pipeline Guilford Greene, Quaker Landings Rd, Greensboro, NC Collected:10/15/24 thru 10/16/24 Lab Sample ID Client Sample ID Result/ Analyte Qual RL MDL Units Method FC19579-10 2W22-20241015 No hits reported in this sample. FC19579-11 2W23-20241015 Toluene 0.36 J 1.0 0.30 ug/l SW846 8260D FC19579-12 2W28-20241015 No hits reported in this sample. FC19579-13 2W29-20241015 Benzene 550 20 6.2 ug/l SW846 8260D Toluene 893 20 6.0 ug/l SW846 8260D Ethylbenzene 152 20 7.1 ug/l SW846 8260D Xylene (total)571 60 14 ug/l SW846 8260D Methyl Tert Butyl Ether 158 20 4.6 ug/l SW846 8260D FC19579-14 2W30-20241015 No hits reported in this sample. FC19579-15 2W31-20241015 Toluene 0.38 J 1.0 0.30 ug/l SW846 8260D Xylene (total)8.9 3.0 0.72 ug/l SW846 8260D Methyl Tert Butyl Ether 171 5.0 1.1 ug/l SW846 8260D FC19579-16 DW1-20241015 Toluene a 0.41 J 1.0 0.30 ug/l SW846 8260D FC19579-17 AS1-20241015 Benzene 5.1 1.0 0.31 ug/l SW846 8260D Toluene 0.60 J 1.0 0.30 ug/l SW846 8260D FC19579-18 AS9-20241015 Benzene 0.40 J 1.0 0.31 ug/l SW846 8260D Toluene 0.41 J 1.0 0.30 ug/l SW846 8260D Methyl Tert Butyl Ether 0.35 J 1.0 0.23 ug/l SW846 8260D 7 of 51 FC19579 2 Summary of Hits Page 3 of 3 Job Number:FC19579 Account:Plantation Pipeline Company Project:URSNCM: Plantation Pipeline Guilford Greene, Quaker Landings Rd, Greensboro, NC Collected:10/15/24 thru 10/16/24 Lab Sample ID Client Sample ID Result/ Analyte Qual RL MDL Units Method FC19579-19 AS10-20241015 Benzene 10.0 1.0 0.31 ug/l SW846 8260D Toluene 7.3 1.0 0.30 ug/l SW846 8260D Ethylbenzene 90.7 1.0 0.36 ug/l SW846 8260D Xylene (total)128 3.0 0.72 ug/l SW846 8260D Methyl Tert Butyl Ether 33.6 1.0 0.23 ug/l SW846 8260D FC19579-20 2W25-20241016 Benzene a 710 50 16 ug/l SW846 8260D Toluene 4930 100 30 ug/l SW846 8260D Ethylbenzene a 146 50 18 ug/l SW846 8260D Xylene (total) a 573 150 36 ug/l SW846 8260D FC19579-21 2W27-20241016 Toluene b 7.1 J 10 3.0 ug/l SW846 8260D Methyl Tert Butyl Ether b 68.5 10 2.3 ug/l SW846 8260D FC19579-22 TRIP BLANK Toluene 2.1 1.0 0.30 ug/l SW846 8260D (a) Sample was treated with an anti-foaming agent. (b) Sample was treated with an anti-foaming agent. Dilution required due to high silt content in the sample. 8 of 51 FC19579 2 SGS North America Inc. Sample Results Report of Analysis Orlando, FL Section 3 9 of 51 FC19579 3 SGS North America Inc. Report of Analysis Page 1 of 1 Client Sample ID:2W1-20241015 Lab Sample ID:FC19579-1 Date Sampled:10/15/24 Matrix:AQ - Ground Water Date Received:10/17/24 Method:SW846 8260D Percent Solids:n/a Project:URSNCM: Plantation Pipeline Guilford Greene, Quaker Landings Rd, Greensboro, NC File ID DF Analyzed By Prep Date Prep Batch Analytical Batch Run #1 N0133274.D 1 10/24/24 13:52 JW n/a n/a VN6748 Run #2 Purge Volume Run #1 5.0 ml Run #2 Purgeable Aromatics, MTBE CAS No.Compound Result RL MDL Units Q 71-43-2 Benzene ND 1.0 0.31 ug/l 108-88-3 Toluene ND 1.0 0.30 ug/l 100-41-4 Ethylbenzene ND 1.0 0.36 ug/l 1330-20-7 Xylene (total)ND 3.0 0.72 ug/l 1634-04-4 Methyl Tert Butyl Ether ND 1.0 0.23 ug/l CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits 1868-53-7 Dibromofluoromethane 100%83-118% 17060-07-0 1,2-Dichloroethane-D4 105%79-125% 2037-26-5 Toluene-D8 102%85-112% 460-00-4 4-Bromofluorobenzene 104%83-118% ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value RL = Reporting Limit B = Indicates analyte found in associated method blank E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound 10 of 51 FC19579 3 3. 1 SGS North America Inc. Report of Analysis Page 1 of 1 Client Sample ID:2W3-20241015 Lab Sample ID:FC19579-2 Date Sampled:10/15/24 Matrix:AQ - Ground Water Date Received:10/17/24 Method:SW846 8260D Percent Solids:n/a Project:URSNCM: Plantation Pipeline Guilford Greene, Quaker Landings Rd, Greensboro, NC File ID DF Analyzed By Prep Date Prep Batch Analytical Batch Run #1 N0133275.D 1 10/24/24 14:16 JW n/a n/a VN6748 Run #2 Purge Volume Run #1 5.0 ml Run #2 Purgeable Aromatics, MTBE CAS No.Compound Result RL MDL Units Q 71-43-2 Benzene ND 1.0 0.31 ug/l 108-88-3 Toluene ND 1.0 0.30 ug/l 100-41-4 Ethylbenzene ND 1.0 0.36 ug/l 1330-20-7 Xylene (total)ND 3.0 0.72 ug/l 1634-04-4 Methyl Tert Butyl Ether ND 1.0 0.23 ug/l CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits 1868-53-7 Dibromofluoromethane 103%83-118% 17060-07-0 1,2-Dichloroethane-D4 107%79-125% 2037-26-5 Toluene-D8 103%85-112% 460-00-4 4-Bromofluorobenzene 106%83-118% ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value RL = Reporting Limit B = Indicates analyte found in associated method blank E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound 11 of 51 FC19579 3 3. 2 SGS North America Inc. Report of Analysis Page 1 of 1 Client Sample ID:2W4-20241015 Lab Sample ID:FC19579-3 Date Sampled:10/15/24 Matrix:AQ - Ground Water Date Received:10/17/24 Method:SW846 8260D Percent Solids:n/a Project:URSNCM: Plantation Pipeline Guilford Greene, Quaker Landings Rd, Greensboro, NC File ID DF Analyzed By Prep Date Prep Batch Analytical Batch Run #1 N0133276.D 5 10/24/24 14:39 JW n/a n/a VN6748 Run #2 Purge Volume Run #1 5.0 ml Run #2 Purgeable Aromatics, MTBE CAS No.Compound Result RL MDL Units Q 71-43-2 Benzene ND 5.0 1.6 ug/l 108-88-3 Toluene ND 5.0 1.5 ug/l 100-41-4 Ethylbenzene ND 5.0 1.8 ug/l 1330-20-7 Xylene (total)ND 15 3.6 ug/l 1634-04-4 Methyl Tert Butyl Ether 227 5.0 1.1 ug/l CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits 1868-53-7 Dibromofluoromethane 102%83-118% 17060-07-0 1,2-Dichloroethane-D4 107%79-125% 2037-26-5 Toluene-D8 103%85-112% 460-00-4 4-Bromofluorobenzene 104%83-118% ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value RL = Reporting Limit B = Indicates analyte found in associated method blank E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound 12 of 51 FC19579 3 3. 3 SGS North America Inc. Report of Analysis Page 1 of 1 Client Sample ID:2W6-20241015 Lab Sample ID:FC19579-4 Date Sampled:10/15/24 Matrix:AQ - Ground Water Date Received:10/17/24 Method:SW846 8260D Percent Solids:n/a Project:URSNCM: Plantation Pipeline Guilford Greene, Quaker Landings Rd, Greensboro, NC File ID DF Analyzed By Prep Date Prep Batch Analytical Batch Run #1 N0133277.D 5 10/24/24 15:03 JW n/a n/a VN6748 Run #2 N0133306.D 20 10/28/24 14:44 JW n/a n/a VN6749 Purge Volume Run #1 5.0 ml Run #2 5.0 ml Purgeable Aromatics, MTBE CAS No.Compound Result RL MDL Units Q 71-43-2 Benzene ND 5.0 1.6 ug/l 108-88-3 Toluene 57.0 5.0 1.5 ug/l 100-41-4 Ethylbenzene 141 5.0 1.8 ug/l 1330-20-7 Xylene (total)1980 a 60 14 ug/l 1634-04-4 Methyl Tert Butyl Ether ND 5.0 1.1 ug/l CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits 1868-53-7 Dibromofluoromethane 102%102%83-118% 17060-07-0 1,2-Dichloroethane-D4 110%103%79-125% 2037-26-5 Toluene-D8 99%99%85-112% 460-00-4 4-Bromofluorobenzene 98%103%83-118% (a) Result is from Run# 2 ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value RL = Reporting Limit B = Indicates analyte found in associated method blank E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound 13 of 51 FC19579 3 3. 4 SGS North America Inc. Report of Analysis Page 1 of 1 Client Sample ID:2W7-20241015 Lab Sample ID:FC19579-5 Date Sampled:10/15/24 Matrix:AQ - Ground Water Date Received:10/17/24 Method:SW846 8260D Percent Solids:n/a Project:URSNCM: Plantation Pipeline Guilford Greene, Quaker Landings Rd, Greensboro, NC File ID DF Analyzed By Prep Date Prep Batch Analytical Batch Run #1 N0133305.D 1 10/28/24 14:20 JW n/a n/a VN6749 Run #2 a N0133278.D 1 10/24/24 15:26 JW n/a n/a VN6748 Purge Volume Run #1 5.0 ml Run #2 5.0 ml Purgeable Aromatics, MTBE CAS No.Compound Result RL MDL Units Q 71-43-2 Benzene ND 1.0 0.31 ug/l 108-88-3 Toluene 0.64 1.0 0.30 ug/l J 100-41-4 Ethylbenzene ND 1.0 0.36 ug/l 1330-20-7 Xylene (total)1.0 3.0 0.72 ug/l J 1634-04-4 Methyl Tert Butyl Ether 8.5 1.0 0.23 ug/l CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits 1868-53-7 Dibromofluoromethane 106%99%83-118% 17060-07-0 1,2-Dichloroethane-D4 106%106%79-125% 2037-26-5 Toluene-D8 101%104%85-112% 460-00-4 4-Bromofluorobenzene 108%103%83-118% (a) Confirmation run. ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value RL = Reporting Limit B = Indicates analyte found in associated method blank E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound 14 of 51 FC19579 3 3. 5 SGS North America Inc. Report of Analysis Page 1 of 1 Client Sample ID:2W11-20241015 Lab Sample ID:FC19579-6 Date Sampled:10/15/24 Matrix:AQ - Ground Water Date Received:10/17/24 Method:SW846 8260D Percent Solids:n/a Project:URSNCM: Plantation Pipeline Guilford Greene, Quaker Landings Rd, Greensboro, NC File ID DF Analyzed By Prep Date Prep Batch Analytical Batch Run #1 N0133279.D 1 10/24/24 15:50 JW n/a n/a VN6748 Run #2 Purge Volume Run #1 5.0 ml Run #2 Purgeable Aromatics, MTBE CAS No.Compound Result RL MDL Units Q 71-43-2 Benzene ND 1.0 0.31 ug/l 108-88-3 Toluene ND 1.0 0.30 ug/l 100-41-4 Ethylbenzene ND 1.0 0.36 ug/l 1330-20-7 Xylene (total)ND 3.0 0.72 ug/l 1634-04-4 Methyl Tert Butyl Ether ND 1.0 0.23 ug/l CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits 1868-53-7 Dibromofluoromethane 101%83-118% 17060-07-0 1,2-Dichloroethane-D4 107%79-125% 2037-26-5 Toluene-D8 103%85-112% 460-00-4 4-Bromofluorobenzene 104%83-118% ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value RL = Reporting Limit B = Indicates analyte found in associated method blank E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound 15 of 51 FC19579 3 3. 6 SGS North America Inc. Report of Analysis Page 1 of 1 Client Sample ID:2W13-20241015 Lab Sample ID:FC19579-7 Date Sampled:10/15/24 Matrix:AQ - Ground Water Date Received:10/17/24 Method:SW846 8260D Percent Solids:n/a Project:URSNCM: Plantation Pipeline Guilford Greene, Quaker Landings Rd, Greensboro, NC File ID DF Analyzed By Prep Date Prep Batch Analytical Batch Run #1 N0133280.D 1 10/24/24 16:14 JW n/a n/a VN6748 Run #2 Purge Volume Run #1 5.0 ml Run #2 Purgeable Aromatics, MTBE CAS No.Compound Result RL MDL Units Q 71-43-2 Benzene ND 1.0 0.31 ug/l 108-88-3 Toluene ND 1.0 0.30 ug/l 100-41-4 Ethylbenzene ND 1.0 0.36 ug/l 1330-20-7 Xylene (total)ND 3.0 0.72 ug/l 1634-04-4 Methyl Tert Butyl Ether ND 1.0 0.23 ug/l CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits 1868-53-7 Dibromofluoromethane 102%83-118% 17060-07-0 1,2-Dichloroethane-D4 108%79-125% 2037-26-5 Toluene-D8 102%85-112% 460-00-4 4-Bromofluorobenzene 104%83-118% ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value RL = Reporting Limit B = Indicates analyte found in associated method blank E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound 16 of 51 FC19579 3 3. 7 SGS North America Inc. Report of Analysis Page 1 of 1 Client Sample ID:2W14-20241015 Lab Sample ID:FC19579-8 Date Sampled:10/15/24 Matrix:AQ - Ground Water Date Received:10/17/24 Method:SW846 8260D Percent Solids:n/a Project:URSNCM: Plantation Pipeline Guilford Greene, Quaker Landings Rd, Greensboro, NC File ID DF Analyzed By Prep Date Prep Batch Analytical Batch Run #1 5E48363.D 1 10/22/24 18:51 DB n/a n/a V5E2152 Run #2 Purge Volume Run #1 5.0 ml Run #2 Purgeable Aromatics, MTBE CAS No.Compound Result RL MDL Units Q 71-43-2 Benzene 0.54 1.0 0.31 ug/l J 108-88-3 Toluene 0.84 1.0 0.30 ug/l J 100-41-4 Ethylbenzene 0.40 1.0 0.36 ug/l J 1330-20-7 Xylene (total)1.6 3.0 0.72 ug/l J 1634-04-4 Methyl Tert Butyl Ether ND 1.0 0.23 ug/l CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits 1868-53-7 Dibromofluoromethane 105%83-118% 17060-07-0 1,2-Dichloroethane-D4 118%79-125% 2037-26-5 Toluene-D8 98%85-112% 460-00-4 4-Bromofluorobenzene 105%83-118% ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value RL = Reporting Limit B = Indicates analyte found in associated method blank E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound 17 of 51 FC19579 3 3. 8 SGS North America Inc. Report of Analysis Page 1 of 1 Client Sample ID:2W18-20241015 Lab Sample ID:FC19579-9 Date Sampled:10/15/24 Matrix:AQ - Ground Water Date Received:10/17/24 Method:SW846 8260D Percent Solids:n/a Project:URSNCM: Plantation Pipeline Guilford Greene, Quaker Landings Rd, Greensboro, NC File ID DF Analyzed By Prep Date Prep Batch Analytical Batch Run #1 5E48364.D 1 10/22/24 19:14 DB n/a n/a V5E2152 Run #2 Purge Volume Run #1 5.0 ml Run #2 Purgeable Aromatics, MTBE CAS No.Compound Result RL MDL Units Q 71-43-2 Benzene ND 1.0 0.31 ug/l 108-88-3 Toluene ND 1.0 0.30 ug/l 100-41-4 Ethylbenzene ND 1.0 0.36 ug/l 1330-20-7 Xylene (total)ND 3.0 0.72 ug/l 1634-04-4 Methyl Tert Butyl Ether ND 1.0 0.23 ug/l CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits 1868-53-7 Dibromofluoromethane 104%83-118% 17060-07-0 1,2-Dichloroethane-D4 117%79-125% 2037-26-5 Toluene-D8 99%85-112% 460-00-4 4-Bromofluorobenzene 109%83-118% ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value RL = Reporting Limit B = Indicates analyte found in associated method blank E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound 18 of 51 FC19579 3 3. 9 SGS North America Inc. Report of Analysis Page 1 of 1 Client Sample ID:2W22-20241015 Lab Sample ID:FC19579-10 Date Sampled:10/15/24 Matrix:AQ - Ground Water Date Received:10/17/24 Method:SW846 8260D Percent Solids:n/a Project:URSNCM: Plantation Pipeline Guilford Greene, Quaker Landings Rd, Greensboro, NC File ID DF Analyzed By Prep Date Prep Batch Analytical Batch Run #1 5E48365.D 1 10/22/24 19:37 DB n/a n/a V5E2152 Run #2 Purge Volume Run #1 5.0 ml Run #2 Purgeable Aromatics, MTBE CAS No.Compound Result RL MDL Units Q 71-43-2 Benzene ND 1.0 0.31 ug/l 108-88-3 Toluene ND 1.0 0.30 ug/l 100-41-4 Ethylbenzene ND 1.0 0.36 ug/l 1330-20-7 Xylene (total)ND 3.0 0.72 ug/l 1634-04-4 Methyl Tert Butyl Ether ND 1.0 0.23 ug/l CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits 1868-53-7 Dibromofluoromethane 105%83-118% 17060-07-0 1,2-Dichloroethane-D4 120%79-125% 2037-26-5 Toluene-D8 100%85-112% 460-00-4 4-Bromofluorobenzene 109%83-118% ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value RL = Reporting Limit B = Indicates analyte found in associated method blank E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound 19 of 51 FC19579 3 3. 1 0 SGS North America Inc. Report of Analysis Page 1 of 1 Client Sample ID:2W23-20241015 Lab Sample ID:FC19579-11 Date Sampled:10/15/24 Matrix:AQ - Ground Water Date Received:10/17/24 Method:SW846 8260D Percent Solids:n/a Project:URSNCM: Plantation Pipeline Guilford Greene, Quaker Landings Rd, Greensboro, NC File ID DF Analyzed By Prep Date Prep Batch Analytical Batch Run #1 5E48366.D 1 10/22/24 20:01 DB n/a n/a V5E2152 Run #2 Purge Volume Run #1 5.0 ml Run #2 Purgeable Aromatics, MTBE CAS No.Compound Result RL MDL Units Q 71-43-2 Benzene ND 1.0 0.31 ug/l 108-88-3 Toluene 0.36 1.0 0.30 ug/l J 100-41-4 Ethylbenzene ND 1.0 0.36 ug/l 1330-20-7 Xylene (total)ND 3.0 0.72 ug/l 1634-04-4 Methyl Tert Butyl Ether ND 1.0 0.23 ug/l CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits 1868-53-7 Dibromofluoromethane 104%83-118% 17060-07-0 1,2-Dichloroethane-D4 117%79-125% 2037-26-5 Toluene-D8 99%85-112% 460-00-4 4-Bromofluorobenzene 107%83-118% ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value RL = Reporting Limit B = Indicates analyte found in associated method blank E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound 20 of 51 FC19579 3 3. 1 1 SGS North America Inc. Report of Analysis Page 1 of 1 Client Sample ID:2W28-20241015 Lab Sample ID:FC19579-12 Date Sampled:10/15/24 Matrix:AQ - Ground Water Date Received:10/17/24 Method:SW846 8260D Percent Solids:n/a Project:URSNCM: Plantation Pipeline Guilford Greene, Quaker Landings Rd, Greensboro, NC File ID DF Analyzed By Prep Date Prep Batch Analytical Batch Run #1 5E48367.D 1 10/22/24 20:24 DB n/a n/a V5E2152 Run #2 Purge Volume Run #1 5.0 ml Run #2 Purgeable Aromatics, MTBE CAS No.Compound Result RL MDL Units Q 71-43-2 Benzene ND 1.0 0.31 ug/l 108-88-3 Toluene ND 1.0 0.30 ug/l 100-41-4 Ethylbenzene ND 1.0 0.36 ug/l 1330-20-7 Xylene (total)ND 3.0 0.72 ug/l 1634-04-4 Methyl Tert Butyl Ether ND 1.0 0.23 ug/l CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits 1868-53-7 Dibromofluoromethane 106%83-118% 17060-07-0 1,2-Dichloroethane-D4 117%79-125% 2037-26-5 Toluene-D8 101%85-112% 460-00-4 4-Bromofluorobenzene 107%83-118% ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value RL = Reporting Limit B = Indicates analyte found in associated method blank E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound 21 of 51 FC19579 3 3. 1 2 SGS North America Inc. Report of Analysis Page 1 of 1 Client Sample ID:2W29-20241015 Lab Sample ID:FC19579-13 Date Sampled:10/15/24 Matrix:AQ - Ground Water Date Received:10/17/24 Method:SW846 8260D Percent Solids:n/a Project:URSNCM: Plantation Pipeline Guilford Greene, Quaker Landings Rd, Greensboro, NC File ID DF Analyzed By Prep Date Prep Batch Analytical Batch Run #1 5E48368.D 20 10/22/24 20:48 DB n/a n/a V5E2152 Run #2 Purge Volume Run #1 5.0 ml Run #2 Purgeable Aromatics, MTBE CAS No.Compound Result RL MDL Units Q 71-43-2 Benzene 550 20 6.2 ug/l 108-88-3 Toluene 893 20 6.0 ug/l 100-41-4 Ethylbenzene 152 20 7.1 ug/l 1330-20-7 Xylene (total)571 60 14 ug/l 1634-04-4 Methyl Tert Butyl Ether 158 20 4.6 ug/l CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits 1868-53-7 Dibromofluoromethane 106%83-118% 17060-07-0 1,2-Dichloroethane-D4 118%79-125% 2037-26-5 Toluene-D8 99%85-112% 460-00-4 4-Bromofluorobenzene 105%83-118% ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value RL = Reporting Limit B = Indicates analyte found in associated method blank E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound 22 of 51 FC19579 3 3. 1 3 SGS North America Inc. Report of Analysis Page 1 of 1 Client Sample ID:2W30-20241015 Lab Sample ID:FC19579-14 Date Sampled:10/15/24 Matrix:AQ - Ground Water Date Received:10/17/24 Method:SW846 8260D Percent Solids:n/a Project:URSNCM: Plantation Pipeline Guilford Greene, Quaker Landings Rd, Greensboro, NC File ID DF Analyzed By Prep Date Prep Batch Analytical Batch Run #1 5E48369.D 1 10/22/24 21:12 DB n/a n/a V5E2152 Run #2 Purge Volume Run #1 5.0 ml Run #2 Purgeable Aromatics, MTBE CAS No.Compound Result RL MDL Units Q 71-43-2 Benzene ND 1.0 0.31 ug/l 108-88-3 Toluene ND 1.0 0.30 ug/l 100-41-4 Ethylbenzene ND 1.0 0.36 ug/l 1330-20-7 Xylene (total)ND 3.0 0.72 ug/l 1634-04-4 Methyl Tert Butyl Ether ND 1.0 0.23 ug/l CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits 1868-53-7 Dibromofluoromethane 103%83-118% 17060-07-0 1,2-Dichloroethane-D4 118%79-125% 2037-26-5 Toluene-D8 101%85-112% 460-00-4 4-Bromofluorobenzene 107%83-118% ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value RL = Reporting Limit B = Indicates analyte found in associated method blank E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound 23 of 51 FC19579 3 3. 1 4 SGS North America Inc. Report of Analysis Page 1 of 1 Client Sample ID:2W31-20241015 Lab Sample ID:FC19579-15 Date Sampled:10/15/24 Matrix:AQ - Ground Water Date Received:10/17/24 Method:SW846 8260D Percent Solids:n/a Project:URSNCM: Plantation Pipeline Guilford Greene, Quaker Landings Rd, Greensboro, NC File ID DF Analyzed By Prep Date Prep Batch Analytical Batch Run #1 2A60103.D 1 10/22/24 22:43 JW n/a n/a V2A2019 Run #2 N0133238.D 5 10/23/24 11:18 JW n/a n/a VN6747 Purge Volume Run #1 5.0 ml Run #2 5.0 ml Purgeable Aromatics, MTBE CAS No.Compound Result RL MDL Units Q 71-43-2 Benzene ND 1.0 0.31 ug/l 108-88-3 Toluene 0.38 1.0 0.30 ug/l J 100-41-4 Ethylbenzene ND 1.0 0.36 ug/l 1330-20-7 Xylene (total)8.9 3.0 0.72 ug/l 1634-04-4 Methyl Tert Butyl Ether 171 a 5.0 1.1 ug/l CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits 1868-53-7 Dibromofluoromethane 102%102%83-118% 17060-07-0 1,2-Dichloroethane-D4 110%107%79-125% 2037-26-5 Toluene-D8 100%103%85-112% 460-00-4 4-Bromofluorobenzene 99%104%83-118% (a) Result is from Run# 2 ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value RL = Reporting Limit B = Indicates analyte found in associated method blank E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound 24 of 51 FC19579 3 3. 1 5 SGS North America Inc. Report of Analysis Page 1 of 1 Client Sample ID:DW1-20241015 Lab Sample ID:FC19579-16 Date Sampled:10/15/24 Matrix:AQ - Ground Water Date Received:10/17/24 Method:SW846 8260D Percent Solids:n/a Project:URSNCM: Plantation Pipeline Guilford Greene, Quaker Landings Rd, Greensboro, NC File ID DF Analyzed By Prep Date Prep Batch Analytical Batch Run #1 a 2A60104.D 1 10/22/24 23:07 JW n/a n/a V2A2019 Run #2 Purge Volume Run #1 5.0 ml Run #2 Purgeable Aromatics, MTBE CAS No.Compound Result RL MDL Units Q 71-43-2 Benzene ND 1.0 0.31 ug/l 108-88-3 Toluene 0.41 1.0 0.30 ug/l J 100-41-4 Ethylbenzene ND 1.0 0.36 ug/l 1330-20-7 Xylene (total)ND 3.0 0.72 ug/l 1634-04-4 Methyl Tert Butyl Ether ND 1.0 0.23 ug/l CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits 1868-53-7 Dibromofluoromethane 104%83-118% 17060-07-0 1,2-Dichloroethane-D4 111%79-125% 2037-26-5 Toluene-D8 98%85-112% 460-00-4 4-Bromofluorobenzene 99%83-118% (a) Sample was treated with an anti-foaming agent. ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value RL = Reporting Limit B = Indicates analyte found in associated method blank E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound 25 of 51 FC19579 3 3. 1 6 SGS North America Inc. Report of Analysis Page 1 of 1 Client Sample ID:AS1-20241015 Lab Sample ID:FC19579-17 Date Sampled:10/15/24 Matrix:AQ - Ground Water Date Received:10/17/24 Method:SW846 8260D Percent Solids:n/a Project:URSNCM: Plantation Pipeline Guilford Greene, Quaker Landings Rd, Greensboro, NC File ID DF Analyzed By Prep Date Prep Batch Analytical Batch Run #1 2A60105.D 1 10/22/24 23:31 JW n/a n/a V2A2019 Run #2 Purge Volume Run #1 5.0 ml Run #2 Purgeable Aromatics, MTBE CAS No.Compound Result RL MDL Units Q 71-43-2 Benzene 5.1 1.0 0.31 ug/l 108-88-3 Toluene 0.60 1.0 0.30 ug/l J 100-41-4 Ethylbenzene ND 1.0 0.36 ug/l 1330-20-7 Xylene (total)ND 3.0 0.72 ug/l 1634-04-4 Methyl Tert Butyl Ether ND 1.0 0.23 ug/l CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits 1868-53-7 Dibromofluoromethane 106%83-118% 17060-07-0 1,2-Dichloroethane-D4 110%79-125% 2037-26-5 Toluene-D8 98%85-112% 460-00-4 4-Bromofluorobenzene 98%83-118% ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value RL = Reporting Limit B = Indicates analyte found in associated method blank E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound 26 of 51 FC19579 3 3. 1 7 SGS North America Inc. Report of Analysis Page 1 of 1 Client Sample ID:AS9-20241015 Lab Sample ID:FC19579-18 Date Sampled:10/15/24 Matrix:AQ - Ground Water Date Received:10/17/24 Method:SW846 8260D Percent Solids:n/a Project:URSNCM: Plantation Pipeline Guilford Greene, Quaker Landings Rd, Greensboro, NC File ID DF Analyzed By Prep Date Prep Batch Analytical Batch Run #1 2A60106.D 1 10/22/24 23:55 JW n/a n/a V2A2019 Run #2 Purge Volume Run #1 5.0 ml Run #2 Purgeable Aromatics, MTBE CAS No.Compound Result RL MDL Units Q 71-43-2 Benzene 0.40 1.0 0.31 ug/l J 108-88-3 Toluene 0.41 1.0 0.30 ug/l J 100-41-4 Ethylbenzene ND 1.0 0.36 ug/l 1330-20-7 Xylene (total)ND 3.0 0.72 ug/l 1634-04-4 Methyl Tert Butyl Ether 0.35 1.0 0.23 ug/l J CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits 1868-53-7 Dibromofluoromethane 100%83-118% 17060-07-0 1,2-Dichloroethane-D4 107%79-125% 2037-26-5 Toluene-D8 98%85-112% 460-00-4 4-Bromofluorobenzene 98%83-118% ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value RL = Reporting Limit B = Indicates analyte found in associated method blank E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound 27 of 51 FC19579 3 3. 1 8 SGS North America Inc. Report of Analysis Page 1 of 1 Client Sample ID:AS10-20241015 Lab Sample ID:FC19579-19 Date Sampled:10/15/24 Matrix:AQ - Ground Water Date Received:10/17/24 Method:SW846 8260D Percent Solids:n/a Project:URSNCM: Plantation Pipeline Guilford Greene, Quaker Landings Rd, Greensboro, NC File ID DF Analyzed By Prep Date Prep Batch Analytical Batch Run #1 2A60107.D 1 10/23/24 00:19 JW n/a n/a V2A2019 Run #2 Purge Volume Run #1 5.0 ml Run #2 Purgeable Aromatics, MTBE CAS No.Compound Result RL MDL Units Q 71-43-2 Benzene 10.0 1.0 0.31 ug/l 108-88-3 Toluene 7.3 1.0 0.30 ug/l 100-41-4 Ethylbenzene 90.7 1.0 0.36 ug/l 1330-20-7 Xylene (total)128 3.0 0.72 ug/l 1634-04-4 Methyl Tert Butyl Ether 33.6 1.0 0.23 ug/l CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits 1868-53-7 Dibromofluoromethane 95%83-118% 17060-07-0 1,2-Dichloroethane-D4 104%79-125% 2037-26-5 Toluene-D8 99%85-112% 460-00-4 4-Bromofluorobenzene 99%83-118% ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value RL = Reporting Limit B = Indicates analyte found in associated method blank E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound 28 of 51 FC19579 3 3. 1 9 SGS North America Inc. Report of Analysis Page 1 of 1 Client Sample ID:2W25-20241016 Lab Sample ID:FC19579-20 Date Sampled:10/16/24 Matrix:AQ - Ground Water Date Received:10/17/24 Method:SW846 8260D Percent Solids:n/a Project:URSNCM: Plantation Pipeline Guilford Greene, Quaker Landings Rd, Greensboro, NC File ID DF Analyzed By Prep Date Prep Batch Analytical Batch Run #1 a 2A60102.D 50 10/22/24 22:19 JW n/a n/a V2A2019 Run #2 N0133239.D 100 10/23/24 11:42 JW n/a n/a VN6747 Purge Volume Run #1 5.0 ml Run #2 5.0 ml Purgeable Aromatics, MTBE CAS No.Compound Result RL MDL Units Q 71-43-2 Benzene 710 50 16 ug/l 108-88-3 Toluene 4930 b 100 30 ug/l 100-41-4 Ethylbenzene 146 50 18 ug/l 1330-20-7 Xylene (total)573 150 36 ug/l 1634-04-4 Methyl Tert Butyl Ether ND 50 11 ug/l CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits 1868-53-7 Dibromofluoromethane 99%101%83-118% 17060-07-0 1,2-Dichloroethane-D4 107%106%79-125% 2037-26-5 Toluene-D8 97%103%85-112% 460-00-4 4-Bromofluorobenzene 101%105%83-118% (a) Sample was treated with an anti-foaming agent. (b) Result is from Run# 2 ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value RL = Reporting Limit B = Indicates analyte found in associated method blank E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound 29 of 51 FC19579 3 3. 2 0 SGS North America Inc. Report of Analysis Page 1 of 1 Client Sample ID:2W27-20241016 Lab Sample ID:FC19579-21 Date Sampled:10/16/24 Matrix:AQ - Ground Water Date Received:10/17/24 Method:SW846 8260D Percent Solids:n/a Project:URSNCM: Plantation Pipeline Guilford Greene, Quaker Landings Rd, Greensboro, NC File ID DF Analyzed By Prep Date Prep Batch Analytical Batch Run #1 a 2A60115.D 10 10/23/24 03:31 JW n/a n/a V2A2019 Run #2 Purge Volume Run #1 5.0 ml Run #2 Purgeable Aromatics, MTBE CAS No.Compound Result RL MDL Units Q 71-43-2 Benzene ND 10 3.1 ug/l 108-88-3 Toluene 7.1 10 3.0 ug/l J 100-41-4 Ethylbenzene ND 10 3.6 ug/l 1330-20-7 Xylene (total)ND 30 7.2 ug/l 1634-04-4 Methyl Tert Butyl Ether 68.5 10 2.3 ug/l CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits 1868-53-7 Dibromofluoromethane 98%83-118% 17060-07-0 1,2-Dichloroethane-D4 104%79-125% 2037-26-5 Toluene-D8 102%85-112% 460-00-4 4-Bromofluorobenzene 98%83-118% (a) Sample was treated with an anti-foaming agent. Dilution required due to high silt content in the sample. ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value RL = Reporting Limit B = Indicates analyte found in associated method blank E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound 30 of 51 FC19579 3 3. 2 1 SGS North America Inc. Report of Analysis Page 1 of 1 Client Sample ID:TRIP BLANK Lab Sample ID:FC19579-22 Date Sampled:10/15/24 Matrix:AQ - Trip Blank Water Date Received:10/17/24 Method:SW846 8260D Percent Solids:n/a Project:URSNCM: Plantation Pipeline Guilford Greene, Quaker Landings Rd, Greensboro, NC File ID DF Analyzed By Prep Date Prep Batch Analytical Batch Run #1 2A60101.D 1 10/22/24 21:55 JW n/a n/a V2A2019 Run #2 Purge Volume Run #1 5.0 ml Run #2 Purgeable Aromatics, MTBE CAS No.Compound Result RL MDL Units Q 71-43-2 Benzene ND 1.0 0.31 ug/l 108-88-3 Toluene 2.1 1.0 0.30 ug/l 100-41-4 Ethylbenzene ND 1.0 0.36 ug/l 1330-20-7 Xylene (total)ND 3.0 0.72 ug/l 1634-04-4 Methyl Tert Butyl Ether ND 1.0 0.23 ug/l CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits 1868-53-7 Dibromofluoromethane 103%83-118% 17060-07-0 1,2-Dichloroethane-D4 110%79-125% 2037-26-5 Toluene-D8 97%85-112% 460-00-4 4-Bromofluorobenzene 100%83-118% ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value RL = Reporting Limit B = Indicates analyte found in associated method blank E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound 31 of 51 FC19579 3 3. 2 2 SGS North America Inc. Misc. Forms Custody Documents and Other Forms Includes the following where applicable:  Chain of Custody Orlando, FL Section 4 32 of 51 FC19579 4 FC19579: Chain of Custody Page 1 of 3 33 of 51 FC19579 4 4. 1 FC19579: Chain of Custody Page 2 of 3 34 of 51 FC19579 4 4. 1 Job Number:fc19579 Client:AECOM Date / Time Received:10/17/2024 9:30:00 AM Delivery Method:FEDEX Project:PPL GUILFORD Airbill #'s:GREENE Cooler Information 1. Custody Seals Present: Y or N 2. Custody Seals Intact: 4. Cooler temp verification: 3. Temp criteria achieved: 5. Cooler media: IR Gun Ice (Bag) Trip Blank Information Y or N N/A 1. Trip Blank present / cooler: 2. Trip Blank listed on COC: Sample Information 1. Sample labels present on bottles: 2. Samples presented properly 3. Sufficient volume/containers recv'd for analysis 4. Condition of sample: 5. Sample recv'd within HT 6. Dates/Times/IDs on COC match sample label 7. VOCs have headspace 8. Bottles received for unspecified tests 9. Compositing instructions clear 10. Voa Soil Kits/Jars received past 48hrs? Intact Comments Cooler Temps (Raw Measured) °C: Cooler Temps (Corrected) °C: Cooler 1: (3.8); Cooler 1: (3.6); Sample Receipt Summary 112723 EK SGS - Orlando Sample Receipt Summary Test Strip Lot #s:pH 0-3:226422 pH 10-12:Other: (Specify)pH 1.0 - 12.0 222221 3. Type of TB Received W or S N/A Y or N N/A 11. % Solids Jar Received? 12. Residual Chlorine Present? Misc Information Number of Encores:25 Gram 5 Gram Residual Chlorine Test Strip Lot # Number of Lab Filtered Metals: Technician:ZANEB Date:10/17/2024 11:08:05 AM Reviewer:Date: FC19579: Chain of Custody Page 3 of 3 35 of 51 FC19579 4 4. 1 SGS North America Inc. MS Volatiles QC Data Summaries Includes the following where applicable:  Method Blank Summaries  Blank Spike Summaries  Matrix Spike and Duplicate Summaries Orlando, FL Section 5 36 of 51 FC19579 5 Method Blank Summary Page 1 of 1 Job Number:FC19579 Account:PLANGAA Plantation Pipeline Company Project:URSNCM: Plantation Pipeline Guilford Greene, Quaker Landings Rd, Greensboro, NC Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch V5E2152-MB 5E48347.D 1 10/22/24 DB n/a n/a V5E2152 The QC reported here applies to the following samples:Method: SW846 8260D FC19579-8, FC19579-9, FC19579-10, FC19579-11, FC19579-12, FC19579-13, FC19579-14 CAS No.Compound Result RL MDL Units Q 71-43-2 Benzene ND 1.0 0.31 ug/l 100-41-4 Ethylbenzene ND 1.0 0.36 ug/l 1634-04-4 Methyl Tert Butyl Ether ND 1.0 0.23 ug/l 108-88-3 Toluene ND 1.0 0.30 ug/l 1330-20-7 Xylene (total)ND 3.0 0.72 ug/l CAS No.Surrogate Recoveries Limits 1868-53-7 Dibromofluoromethane 104%83-118% 17060-07-0 1,2-Dichloroethane-D4 118%79-125% 2037-26-5 Toluene-D8 101%85-112% 460-00-4 4-Bromofluorobenzene 109%83-118% 37 of 51 FC19579 5 5. 1 . 1 Method Blank Summary Page 1 of 1 Job Number:FC19579 Account:PLANGAA Plantation Pipeline Company Project:URSNCM: Plantation Pipeline Guilford Greene, Quaker Landings Rd, Greensboro, NC Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch V2A2019-MB a 2A60099.D 1 10/22/24 JW n/a n/a V2A2019 The QC reported here applies to the following samples:Method: SW846 8260D FC19579-15, FC19579-16, FC19579-17, FC19579-18, FC19579-19, FC19579-20, FC19579-21, FC19579-22 CAS No.Compound Result RL MDL Units Q 71-43-2 Benzene ND 1.0 0.31 ug/l 100-41-4 Ethylbenzene ND 1.0 0.36 ug/l 1634-04-4 Methyl Tert Butyl Ether ND 1.0 0.23 ug/l 108-88-3 Toluene ND 1.0 0.30 ug/l 1330-20-7 Xylene (total)ND 3.0 0.72 ug/l CAS No.Surrogate Recoveries Limits 1868-53-7 Dibromofluoromethane 103%83-118% 17060-07-0 1,2-Dichloroethane-D4 109%79-125% 2037-26-5 Toluene-D8 98%85-112% 460-00-4 4-Bromofluorobenzene 99%83-118% (a) Sample was treated with an anti-foaming agent. 38 of 51 FC19579 5 5. 1 . 2 Method Blank Summary Page 1 of 1 Job Number:FC19579 Account:PLANGAA Plantation Pipeline Company Project:URSNCM: Plantation Pipeline Guilford Greene, Quaker Landings Rd, Greensboro, NC Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch VN6747-MB a N0133235.D 1 10/23/24 JW n/a n/a VN6747 The QC reported here applies to the following samples:Method: SW846 8260D FC19579-15, FC19579-20 CAS No.Compound Result RL MDL Units Q 1634-04-4 Methyl Tert Butyl Ether ND 1.0 0.23 ug/l 108-88-3 Toluene ND 1.0 0.30 ug/l CAS No.Surrogate Recoveries Limits 1868-53-7 Dibromofluoromethane 99%83-118% 17060-07-0 1,2-Dichloroethane-D4 106%79-125% 2037-26-5 Toluene-D8 100%85-112% 460-00-4 4-Bromofluorobenzene 108%83-118% (a) Sample was treated with an anti-foaming agent. 39 of 51 FC19579 5 5. 1 . 3 Method Blank Summary Page 1 of 1 Job Number:FC19579 Account:PLANGAA Plantation Pipeline Company Project:URSNCM: Plantation Pipeline Guilford Greene, Quaker Landings Rd, Greensboro, NC Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch VN6748-MB a N0133266.D 1 10/24/24 JW n/a n/a VN6748 The QC reported here applies to the following samples:Method: SW846 8260D FC19579-1, FC19579-2, FC19579-3, FC19579-4, FC19579-6, FC19579-7 CAS No.Compound Result RL MDL Units Q 71-43-2 Benzene ND 1.0 0.31 ug/l 100-41-4 Ethylbenzene ND 1.0 0.36 ug/l 1634-04-4 Methyl Tert Butyl Ether ND 1.0 0.23 ug/l 108-88-3 Toluene ND 1.0 0.30 ug/l 1330-20-7 Xylene (total)ND 3.0 0.72 ug/l CAS No.Surrogate Recoveries Limits 1868-53-7 Dibromofluoromethane 101%83-118% 17060-07-0 1,2-Dichloroethane-D4 108%79-125% 2037-26-5 Toluene-D8 102%85-112% 460-00-4 4-Bromofluorobenzene 107%83-118% (a) Sample was treated with an anti-foaming agent. 40 of 51 FC19579 5 5. 1 . 4 Method Blank Summary Page 1 of 1 Job Number:FC19579 Account:PLANGAA Plantation Pipeline Company Project:URSNCM: Plantation Pipeline Guilford Greene, Quaker Landings Rd, Greensboro, NC Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch VN6749-MB a N0133296.D 1 10/28/24 JW n/a n/a VN6749 The QC reported here applies to the following samples:Method: SW846 8260D FC19579-4, FC19579-5 CAS No.Compound Result RL MDL Units Q 71-43-2 Benzene ND 1.0 0.31 ug/l 100-41-4 Ethylbenzene ND 1.0 0.36 ug/l 1634-04-4 Methyl Tert Butyl Ether ND 1.0 0.23 ug/l 108-88-3 Toluene ND 1.0 0.30 ug/l 1330-20-7 Xylene (total)ND 3.0 0.72 ug/l CAS No.Surrogate Recoveries Limits 1868-53-7 Dibromofluoromethane 106%83-118% 17060-07-0 1,2-Dichloroethane-D4 103%79-125% 2037-26-5 Toluene-D8 101%85-112% 460-00-4 4-Bromofluorobenzene 109%83-118% (a) Sample was treated with an anti-foaming agent. 41 of 51 FC19579 5 5. 1 . 5 Blank Spike Summary Page 1 of 1 Job Number:FC19579 Account:PLANGAA Plantation Pipeline Company Project:URSNCM: Plantation Pipeline Guilford Greene, Quaker Landings Rd, Greensboro, NC Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch V5E2152-BS 5E48344.D 1 10/22/24 DB n/a n/a V5E2152 The QC reported here applies to the following samples:Method: SW846 8260D FC19579-8, FC19579-9, FC19579-10, FC19579-11, FC19579-12, FC19579-13, FC19579-14 Spike BSP BSP CAS No.Compound ug/l ug/l %Limits 71-43-2 Benzene 25 26.8 107 81-122 100-41-4 Ethylbenzene 25 26.0 104 81-121 1634-04-4 Methyl Tert Butyl Ether 25 25.6 102 72-117 108-88-3 Toluene 25 25.3 101 80-120 1330-20-7 Xylene (total)75 77.7 104 80-126 CAS No.Surrogate Recoveries BSP Limits 1868-53-7 Dibromofluoromethane 107%83-118% 17060-07-0 1,2-Dichloroethane-D4 121%79-125% 2037-26-5 Toluene-D8 100%85-112% 460-00-4 4-Bromofluorobenzene 103%83-118% * = Outside of Control Limits. 42 of 51 FC19579 5 5. 2 . 1 Blank Spike Summary Page 1 of 1 Job Number:FC19579 Account:PLANGAA Plantation Pipeline Company Project:URSNCM: Plantation Pipeline Guilford Greene, Quaker Landings Rd, Greensboro, NC Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch V2A2019-BS 2A60095.D 1 10/22/24 JW n/a n/a V2A2019 The QC reported here applies to the following samples:Method: SW846 8260D FC19579-15, FC19579-16, FC19579-17, FC19579-18, FC19579-19, FC19579-20, FC19579-21, FC19579-22 Spike BSP BSP CAS No.Compound ug/l ug/l %Limits 71-43-2 Benzene 25 26.9 108 81-122 100-41-4 Ethylbenzene 25 26.7 107 81-121 1634-04-4 Methyl Tert Butyl Ether 25 26.7 107 72-117 108-88-3 Toluene 25 26.3 105 80-120 1330-20-7 Xylene (total)75 79.9 107 80-126 CAS No.Surrogate Recoveries BSP Limits 1868-53-7 Dibromofluoromethane 97%83-118% 17060-07-0 1,2-Dichloroethane-D4 107%79-125% 2037-26-5 Toluene-D8 99%85-112% 460-00-4 4-Bromofluorobenzene 97%83-118% * = Outside of Control Limits. 43 of 51 FC19579 5 5. 2 . 2 Blank Spike Summary Page 1 of 1 Job Number:FC19579 Account:PLANGAA Plantation Pipeline Company Project:URSNCM: Plantation Pipeline Guilford Greene, Quaker Landings Rd, Greensboro, NC Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch VN6747-BS N0133232.D 1 10/23/24 JW n/a n/a VN6747 The QC reported here applies to the following samples:Method: SW846 8260D FC19579-15, FC19579-20 Spike BSP BSP CAS No.Compound ug/l ug/l %Limits 1634-04-4 Methyl Tert Butyl Ether 25 24.7 99 72-117 108-88-3 Toluene 25 23.5 94 80-120 CAS No.Surrogate Recoveries BSP Limits 1868-53-7 Dibromofluoromethane 103%83-118% 17060-07-0 1,2-Dichloroethane-D4 110%79-125% 2037-26-5 Toluene-D8 100%85-112% 460-00-4 4-Bromofluorobenzene 102%83-118% * = Outside of Control Limits. 44 of 51 FC19579 5 5. 2 . 3 Blank Spike Summary Page 1 of 1 Job Number:FC19579 Account:PLANGAA Plantation Pipeline Company Project:URSNCM: Plantation Pipeline Guilford Greene, Quaker Landings Rd, Greensboro, NC Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch VN6748-BS N0133263.D 1 10/24/24 JW n/a n/a VN6748 The QC reported here applies to the following samples:Method: SW846 8260D FC19579-1, FC19579-2, FC19579-3, FC19579-4, FC19579-6, FC19579-7 Spike BSP BSP CAS No.Compound ug/l ug/l %Limits 71-43-2 Benzene 25 24.4 98 81-122 100-41-4 Ethylbenzene 25 24.8 99 81-121 1634-04-4 Methyl Tert Butyl Ether 25 25.0 100 72-117 108-88-3 Toluene 25 23.4 94 80-120 1330-20-7 Xylene (total)75 75.5 101 80-126 CAS No.Surrogate Recoveries BSP Limits 1868-53-7 Dibromofluoromethane 103%83-118% 17060-07-0 1,2-Dichloroethane-D4 109%79-125% 2037-26-5 Toluene-D8 99%85-112% 460-00-4 4-Bromofluorobenzene 104%83-118% * = Outside of Control Limits. 45 of 51 FC19579 5 5. 2 . 4 Blank Spike Summary Page 1 of 1 Job Number:FC19579 Account:PLANGAA Plantation Pipeline Company Project:URSNCM: Plantation Pipeline Guilford Greene, Quaker Landings Rd, Greensboro, NC Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch VN6749-BS N0133293.D 1 10/28/24 JW n/a n/a VN6749 The QC reported here applies to the following samples:Method: SW846 8260D FC19579-4, FC19579-5 Spike BSP BSP CAS No.Compound ug/l ug/l %Limits 71-43-2 Benzene 25 22.6 90 81-122 100-41-4 Ethylbenzene 25 21.9 88 81-121 1634-04-4 Methyl Tert Butyl Ether 25 22.1 88 72-117 108-88-3 Toluene 25 21.3 85 80-120 1330-20-7 Xylene (total)75 66.6 89 80-126 CAS No.Surrogate Recoveries BSP Limits 1868-53-7 Dibromofluoromethane 106%83-118% 17060-07-0 1,2-Dichloroethane-D4 105%79-125% 2037-26-5 Toluene-D8 97%85-112% 460-00-4 4-Bromofluorobenzene 108%83-118% * = Outside of Control Limits. 46 of 51 FC19579 5 5. 2 . 5 Matrix Spike/Matrix Spike Duplicate Summary Page 1 of 1 Job Number:FC19579 Account:PLANGAA Plantation Pipeline Company Project:URSNCM: Plantation Pipeline Guilford Greene, Quaker Landings Rd, Greensboro, NC Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch FC19676-6MS 5E48355.D 20 10/22/24 DB n/a n/a V5E2152 FC19676-6MSD 5E48356.D 20 10/22/24 DB n/a n/a V5E2152 FC19676-6 5E48351.D 20 10/22/24 DB n/a n/a V5E2152 The QC reported here applies to the following samples:Method: SW846 8260D FC19579-8, FC19579-9, FC19579-10, FC19579-11, FC19579-12, FC19579-13, FC19579-14 FC19676-6 Spike MS MS Spike MSD MSD Limits CAS No.Compound ug/l Q ug/l ug/l %ug/l ug/l %RPD Rec/RPD 71-43-2 Benzene ND 500 488 98 500 517 103 6 81-122/14 100-41-4 Ethylbenzene ND 500 478 96 500 508 102 6 81-121/14 1634-04-4 Methyl Tert Butyl Ether ND 500 499 100 500 502 100 1 72-117/14 108-88-3 Toluene ND 500 468 94 500 497 99 6 80-120/14 1330-20-7 Xylene (total)ND 1500 1440 96 1500 1520 101 5 80-126/15 CAS No.Surrogate Recoveries MS MSD FC19676-6 Limits 1868-53-7 Dibromofluoromethane 104%103%105%83-118% 17060-07-0 1,2-Dichloroethane-D4 121%122%118%79-125% 2037-26-5 Toluene-D8 101%101%99%85-112% 460-00-4 4-Bromofluorobenzene 103%103%106%83-118% * = Outside of Control Limits. 47 of 51 FC19579 5 5. 3 . 1 Matrix Spike/Matrix Spike Duplicate Summary Page 1 of 1 Job Number:FC19579 Account:PLANGAA Plantation Pipeline Company Project:URSNCM: Plantation Pipeline Guilford Greene, Quaker Landings Rd, Greensboro, NC Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch FC19579-20MS 2A60096.D 50 10/22/24 JW n/a n/a V2A2019 FC19579-20MSD 2A60097.D 50 10/22/24 JW n/a n/a V2A2019 FC19579-20 a 2A60102.D 50 10/22/24 JW n/a n/a V2A2019 The QC reported here applies to the following samples:Method: SW846 8260D FC19579-15, FC19579-16, FC19579-17, FC19579-18, FC19579-19, FC19579-20, FC19579-21, FC19579-22 FC19579-20 Spike MS MS Spike MSD MSD Limits CAS No.Compound ug/l Q ug/l ug/l %ug/l ug/l %RPD Rec/RPD 71-43-2 Benzene 710 1250 2010 104 1250 2110 112 5 81-122/14 100-41-4 Ethylbenzene 146 1250 1400 100 1250 1480 107 6 81-121/14 1634-04-4 Methyl Tert Butyl Ether ND 1250 1340 107 1250 1370 110 2 72-117/14 108-88-3 Toluene 5460 E 1250 6460 80 1250 6720 101 4 80-120/14 1330-20-7 Xylene (total)573 3750 4510 105 3750 4720 111 5 80-126/15 CAS No.Surrogate Recoveries MS MSD FC19579-20 Limits 1868-53-7 Dibromofluoromethane 95%97%99%83-118% 17060-07-0 1,2-Dichloroethane-D4 107%107%107%79-125% 2037-26-5 Toluene-D8 100%99%97%85-112% 460-00-4 4-Bromofluorobenzene 98%99%101%83-118% (a) Sample was treated with an anti-foaming agent. * = Outside of Control Limits. 48 of 51 FC19579 5 5. 3 . 2 Matrix Spike/Matrix Spike Duplicate Summary Page 1 of 1 Job Number:FC19579 Account:PLANGAA Plantation Pipeline Company Project:URSNCM: Plantation Pipeline Guilford Greene, Quaker Landings Rd, Greensboro, NC Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch FC19579-20MS N0133257.D 100 10/23/24 JW n/a n/a VN6747 FC19579-20MSD N0133258.D 100 10/23/24 JW n/a n/a VN6747 FC19579-20 N0133239.D 100 10/23/24 JW n/a n/a VN6747 The QC reported here applies to the following samples:Method: SW846 8260D FC19579-15, FC19579-20 FC19579-20 Spike MS MS Spike MSD MSD Limits CAS No.Compound ug/l Q ug/l ug/l %ug/l ug/l %RPD Rec/RPD 1634-04-4 Methyl Tert Butyl Ether ND 2500 2110 84 2500 2220 89 5 72-117/14 108-88-3 Toluene 4930 2500 6300 55*2500 6760 73*7 80-120/14 CAS No.Surrogate Recoveries MS MSD FC19579-20 Limits 1868-53-7 Dibromofluoromethane 101%102%101%83-118% 17060-07-0 1,2-Dichloroethane-D4 106%107%106%79-125% 2037-26-5 Toluene-D8 100%101%103%85-112% 460-00-4 4-Bromofluorobenzene 106%105%105%83-118% * = Outside of Control Limits. 49 of 51 FC19579 5 5. 3 . 3 Matrix Spike/Matrix Spike Duplicate Summary Page 1 of 1 Job Number:FC19579 Account:PLANGAA Plantation Pipeline Company Project:URSNCM: Plantation Pipeline Guilford Greene, Quaker Landings Rd, Greensboro, NC Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch FC19676-2MS N0133288.D 50 10/24/24 JW n/a n/a VN6748 FC19676-2MSD N0133289.D 50 10/24/24 JW n/a n/a VN6748 FC19676-2 N0133268.D 50 10/24/24 JW n/a n/a VN6748 The QC reported here applies to the following samples:Method: SW846 8260D FC19579-1, FC19579-2, FC19579-3, FC19579-4, FC19579-6, FC19579-7 FC19676-2 Spike MS MS Spike MSD MSD Limits CAS No.Compound ug/l Q ug/l ug/l %ug/l ug/l %RPD Rec/RPD 71-43-2 Benzene ND 1250 1240 99 1250 1090 87 13 81-122/14 100-41-4 Ethylbenzene ND 1250 1280 102 1250 1080 86 17*81-121/14 1634-04-4 Methyl Tert Butyl Ether ND 1250 1270 102 1250 1130 90 12 72-117/14 108-88-3 Toluene ND 1250 1220 98 1250 1090 87 11 80-120/14 1330-20-7 Xylene (total)ND 3750 3930 105 3750 3340 89 16*80-126/15 CAS No.Surrogate Recoveries MS MSD FC19676-2 Limits 1868-53-7 Dibromofluoromethane 102%102%99%83-118% 17060-07-0 1,2-Dichloroethane-D4 109%110%106%79-125% 2037-26-5 Toluene-D8 100%99%101%85-112% 460-00-4 4-Bromofluorobenzene 103%101%106%83-118% * = Outside of Control Limits. 50 of 51 FC19579 5 5. 3 . 4 Matrix Spike/Matrix Spike Duplicate Summary Page 1 of 1 Job Number:FC19579 Account:PLANGAA Plantation Pipeline Company Project:URSNCM: Plantation Pipeline Guilford Greene, Quaker Landings Rd, Greensboro, NC Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch FC19914-6MS N0133318.D 2.5 10/28/24 JW n/a n/a VN6749 FC19914-6MSD N0133319.D 2.5 10/28/24 JW n/a n/a VN6749 FC19914-6 N0133298.D 2.5 10/28/24 JW n/a n/a VN6749 The QC reported here applies to the following samples:Method: SW846 8260D FC19579-4, FC19579-5 FC19914-6 Spike MS MS Spike MSD MSD Limits CAS No.Compound ug/l Q ug/l ug/l %ug/l ug/l %RPD Rec/RPD 71-43-2 Benzene 9.3 62.5 72.3 101 62.5 68.0 94 6 81-122/14 100-41-4 Ethylbenzene 213 62.5 248 56* a 62.5 238 40* a 4 81-121/14 1634-04-4 Methyl Tert Butyl Ether 2.5 U 62.5 62.5 100 62.5 57.9 93 8 72-117/14 108-88-3 Toluene 28.0 62.5 81.0 85 62.5 77.9 80 4 80-120/14 1330-20-7 Xylene (total)320 188 470 80 188 457 73*3 80-126/15 CAS No.Surrogate Recoveries MS MSD FC19914-6 Limits 1868-53-7 Dibromofluoromethane 106%104%105%83-118% 17060-07-0 1,2-Dichloroethane-D4 108%106%102%79-125% 2037-26-5 Toluene-D8 94%94%95%85-112% 460-00-4 4-Bromofluorobenzene 104%107%106%83-118% (a) Outside control limits due to high level in sample relative to spike amount. * = Outside of Control Limits. 51 of 51 FC19579 5 5. 3 . 5 AECOM Semiannual Report July – December 2024 Appendix C Laboratory Analytical Reports – Soil Gas ANALYTICAL REPORT PREPARED FOR Attn: Brandt Morrow AECOM 900 Perimeter Park Drive Suite A Morrisville, North Carolina 27560 Generated 9/10/2024 2:24:50 PM JOB DESCRIPTION PPL Guilford Greene JOB NUMBER 140-38266-1 See page two for job notes and contact information. Knoxville TN 37921 5815 Middlebrook Pike Eurofins Knoxville Page 1 of 22 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Eurofins Knoxville Eurofins Knoxville is a laboratory within TestAmerica Laboratories, Inc., a company within Eurofins Environment Testing Group of Companies Job Notes This report may not be reproduced except in full, and with written approval from the laboratory. The results relate only to the samples tested. For questions please contact the Project Manager at the e-mail address or telephone number listed on this page. The test results in this report relate only to the samples as received by the laboratory and will meet all requirements of the methodology, with any exceptions noted. This report shall not be reproduced except in full, without the express written approval of the laboratory. All questions should be directed to the Eurofins TestAmerica Project Manager. Authorization Generated 9/10/2024 2:24:50 PM Authorized for release by Jamie McKinney, Senior Project Manager Jamie.McKinney@et.eurofinsus.com (865)291-3000 Page 2 of 22 9/10/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Table of Contents Client: AECOM Project/Site: PPL Guilford Greene Laboratory Job ID: 140-38266-1 Page 3 of 22 Eurofins Knoxville9/10/2024 Cover Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 Table of Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 Definitions/Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 Case Narrative . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 Detection Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 Client Sample Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7 Default Detection Limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11 Surrogate Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12 QC Sample Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13 QC Association Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15 Lab Chronicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16 Method Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17 Sample Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18 Chain of Custody . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19 Receipt Checklists . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21 Air Canister Dilution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Definitions/Glossary Job ID: 140-38266-1Client: AECOM Project/Site: PPL Guilford Greene Glossary These commonly used abbreviations may or may not be present in this report. ¤Listed under the "D" column to designate that the result is reported on a dry weight basis Abbreviation %R Percent Recovery CFL Contains Free Liquid CFU Colony Forming Unit CNF Contains No Free Liquid DER Duplicate Error Ratio (normalized absolute difference) Dil Fac Dilution Factor DL Detection Limit (DoD/DOE) DL, RA, RE, IN Indicates a Dilution, Re-analysis, Re-extraction, or additional Initial metals/anion analysis of the sample DLC Decision Level Concentration (Radiochemistry) EDL Estimated Detection Limit (Dioxin) LOD Limit of Detection (DoD/DOE) LOQ Limit of Quantitation (DoD/DOE) MCL EPA recommended "Maximum Contaminant Level" MDA Minimum Detectable Activity (Radiochemistry) MDC Minimum Detectable Concentration (Radiochemistry) MDL Method Detection Limit ML Minimum Level (Dioxin) MPN Most Probable Number MQL Method Quantitation Limit NC Not Calculated ND Not Detected at the reporting limit (or MDL or EDL if shown) NEG Negative / Absent POS Positive / Present PQL Practical Quantitation Limit PRES Presumptive QC Quality Control RER Relative Error Ratio (Radiochemistry) RL Reporting Limit or Requested Limit (Radiochemistry) RPD Relative Percent Difference, a measure of the relative difference between two points TEF Toxicity Equivalent Factor (Dioxin) TEQ Toxicity Equivalent Quotient (Dioxin) TNTC Too Numerous To Count Eurofins Knoxville Page 4 of 22 9/10/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Job Narrative140-38266-1 Receipt The samples were received on 8/30/2024 9:15 AM.Unless otherwise noted below,the samples arrived in good condition,and where required,properly preserved and on ice. Receipt ExceptionsThecontainerlabelfor the following sample did not match the information listed on the Chain-of-Custody (COC):SG-4-20240829 (140-38266-4).The container labels list 10:26,while the COC lists 11:26.Logged per COC. Air -GC/MS VOA Methods TO 15 LL,TO-14A,TO-15:EPA methods TO-14A and TO-15 specify the use of humidified "zero air"as the blank reagent for canister cleaning,instrument calibration and sample analysis.Ultra-high purity humidified nitrogen from a cryogenic reservoir is used in place of "zero air"by Eurofins TestAmerica Knoxville. No additional analytical or quality issues were noted,other than those described above or in the Definitions/Glossary page. Case Narrative Client: AECOM Job ID: 140-38266-1 Project: PPL Guilford Greene Eurofins Knoxville Job ID: 140-38266-1 Eurofins Knoxville Page 5 of 22 9/10/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Detection Summary Job ID: 140-38266-1Client: AECOM Project/Site: PPL Guilford Greene Client Sample ID: SG-1-20240829 Lab Sample ID: 140-38266-1 No Detections. Client Sample ID: SG-2-20240829 Lab Sample ID: 140-38266-2 Ethylbenzene RL 0.00080 ppm v/v MDLAnalyteResultQualifier Unit Dil Fac D Method Prep Type Total/NA10.0013 TO 15 LL m-Xylene & p-Xylene 0.00080 ppm v/v Total/NA10.0062 TO 15 LL o-Xylene 0.00080 ppm v/v Total/NA10.0014 TO 15 LL Toluene 0.0012 ppm v/v Total/NA10.0012 TO 15 LL Xylenes, Total 0.0016 ppm v/v Total/NA10.0076 TO 15 LL Ethylbenzene RL 3.5 ug/m3 MDLAnalyteResultQualifier Unit Dil Fac D Method Prep Type Total/NA15.7 TO 15 LL m-Xylene & p-Xylene 3.5 ug/m3 Total/NA127TO 15 LL o-Xylene 3.5 ug/m3 Total/NA16.2 TO 15 LL Toluene 4.5 ug/m3 Total/NA14.5 TO 15 LL Xylenes, Total 6.9 ug/m3 Total/NA133TO 15 LL Client Sample ID: SG-3-20240829 Lab Sample ID: 140-38266-3 m-Xylene & p-Xylene RL 0.00080 ppm v/v MDLAnalyteResultQualifier Unit Dil Fac D Method Prep Type Total/NA1.480.0025 TO 15 LL Xylenes, Total 0.0016 ppm v/v Total/NA1.480.0025 TO 15 LL m-Xylene & p-Xylene RL 3.5 ug/m3 MDLAnalyteResultQualifier Unit Dil Fac D Method Prep Type Total/NA1.4811 TO 15 LL Xylenes, Total 6.9 ug/m3 Total/NA1.4811 TO 15 LL Client Sample ID: SG-4-20240829 Lab Sample ID: 140-38266-4 No Detections. Eurofins Knoxville This Detection Summary does not include radiochemical test results. Page 6 of 22 9/10/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Client Sample Results Job ID: 140-38266-1Client: AECOM Project/Site: PPL Guilford Greene Lab Sample ID: 140-38266-1Client Sample ID: SG-1-20240829 Matrix: AirDate Collected: 08/29/24 13:30 Date Received: 08/30/24 09:15 Sample Container: Summa Canister 6L Method: EPA TO 15 LL - Volatile Organic Compounds in Ambient Air, Low Concentration (GC/MS) RL MDL ND 0.010 ppm v/v 09/09/24 13:55 1.42 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier 2-Methylnaphthalene 0.00080 ppm v/v 09/09/24 13:55 1.42NDBenzene 0.00080 ppm v/v 09/09/24 13:55 1.42NDEthylbenzene 0.0040 ppm v/v 09/09/24 13:55 1.42NDMethyl tert-butyl ether 0.00080 ppm v/v 09/09/24 13:55 1.42NDm-Xylene & p-Xylene 0.0020 ppm v/v 09/09/24 13:55 1.42NDNaphthalene 0.00080 ppm v/v 09/09/24 13:55 1.42NDo-Xylene 0.0012 ppm v/v 09/09/24 13:55 1.42NDToluene 0.0016 ppm v/v 09/09/24 13:55 1.42NDXylenes, Total RL MDL ND 58 ug/m3 09/09/24 13:55 1.42 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier 2-Methylnaphthalene 2.6 ug/m3 09/09/24 13:55 1.42NDBenzene 3.5 ug/m3 09/09/24 13:55 1.42NDEthylbenzene 14 ug/m3 09/09/24 13:55 1.42NDMethyl tert-butyl ether 3.5 ug/m3 09/09/24 13:55 1.42NDm-Xylene & p-Xylene 10 ug/m3 09/09/24 13:55 1.42NDNaphthalene 3.5 ug/m3 09/09/24 13:55 1.42NDo-Xylene 4.5 ug/m3 09/09/24 13:55 1.42NDToluene 6.9 ug/m3 09/09/24 13:55 1.42NDXylenes, Total Isopropyl ether TIC ND ppm v/v 108-20-3 09/09/24 13:55 1.42 Tentatively Identified Compound Dil FacAnalyzedPreparedUnitDQualifierEst. Result CAS No.RT Isopropyl ether TIC ND ug/m3 108-20-3 09/09/24 13:55 1.42 Tentatively Identified Compound Dil FacAnalyzedPreparedUnitDQualifierEst. Result CAS No.RT 4-Bromofluorobenzene (Surr)99 60-140 09/09/24 13:55 1.42 Surrogate Dil FacAnalyzedPreparedQualifierLimits%Recovery Eurofins Knoxville Page 7 of 22 9/10/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Client Sample Results Job ID: 140-38266-1Client: AECOM Project/Site: PPL Guilford Greene Lab Sample ID: 140-38266-2Client Sample ID: SG-2-20240829 Matrix: AirDate Collected: 08/29/24 14:40 Date Received: 08/30/24 09:15 Sample Container: Summa Canister 6L Method: EPA TO 15 LL - Volatile Organic Compounds in Ambient Air, Low Concentration (GC/MS) RL MDL ND 0.010 ppm v/v 09/09/24 14:44 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier 2-Methylnaphthalene 0.00080 ppm v/v 09/09/24 14:44 1NDBenzene 0.00080 ppm v/v 09/09/24 14:44 10.0013Ethylbenzene 0.0040 ppm v/v 09/09/24 14:44 1NDMethyl tert-butyl ether 0.00080 ppm v/v 09/09/24 14:44 10.0062m-Xylene & p-Xylene 0.0020 ppm v/v 09/09/24 14:44 1NDNaphthalene 0.00080 ppm v/v 09/09/24 14:44 10.0014o-Xylene 0.0012 ppm v/v 09/09/24 14:44 10.0012Toluene 0.0016 ppm v/v 09/09/24 14:44 10.0076Xylenes, Total RL MDL ND 58 ug/m3 09/09/24 14:44 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier 2-Methylnaphthalene 2.6 ug/m3 09/09/24 14:44 1NDBenzene 3.5 ug/m3 09/09/24 14:44 15.7Ethylbenzene 14 ug/m3 09/09/24 14:44 1NDMethyl tert-butyl ether 3.5 ug/m3 09/09/24 14:44 127m-Xylene & p-Xylene 10 ug/m3 09/09/24 14:44 1NDNaphthalene 3.5 ug/m3 09/09/24 14:44 16.2o-Xylene 4.5 ug/m3 09/09/24 14:44 14.5Toluene 6.9 ug/m3 09/09/24 14:44 133Xylenes, Total Isopropyl ether TIC ND ppm v/v 108-20-3 09/09/24 14:44 1 Tentatively Identified Compound Dil FacAnalyzedPreparedUnitDQualifierEst. Result CAS No.RT Isopropyl ether TIC ND ug/m3 108-20-3 09/09/24 14:44 1 Tentatively Identified Compound Dil FacAnalyzedPreparedUnitDQualifierEst. Result CAS No.RT 4-Bromofluorobenzene (Surr)104 60-140 09/09/24 14:44 1 Surrogate Dil FacAnalyzedPreparedQualifierLimits%Recovery Eurofins Knoxville Page 8 of 22 9/10/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Client Sample Results Job ID: 140-38266-1Client: AECOM Project/Site: PPL Guilford Greene Lab Sample ID: 140-38266-3Client Sample ID: SG-3-20240829 Matrix: AirDate Collected: 08/29/24 15:31 Date Received: 08/30/24 09:15 Sample Container: Summa Canister 6L Method: EPA TO 15 LL - Volatile Organic Compounds in Ambient Air, Low Concentration (GC/MS) RL MDL ND 0.010 ppm v/v 09/09/24 15:32 1.48 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier 2-Methylnaphthalene 0.00080 ppm v/v 09/09/24 15:32 1.48NDBenzene 0.00080 ppm v/v 09/09/24 15:32 1.48NDEthylbenzene 0.0040 ppm v/v 09/09/24 15:32 1.48NDMethyl tert-butyl ether 0.00080 ppm v/v 09/09/24 15:32 1.480.0025m-Xylene & p-Xylene 0.0020 ppm v/v 09/09/24 15:32 1.48NDNaphthalene 0.00080 ppm v/v 09/09/24 15:32 1.48NDo-Xylene 0.0012 ppm v/v 09/09/24 15:32 1.48NDToluene 0.0016 ppm v/v 09/09/24 15:32 1.480.0025Xylenes, Total RL MDL ND 58 ug/m3 09/09/24 15:32 1.48 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier 2-Methylnaphthalene 2.6 ug/m3 09/09/24 15:32 1.48NDBenzene 3.5 ug/m3 09/09/24 15:32 1.48NDEthylbenzene 14 ug/m3 09/09/24 15:32 1.48NDMethyl tert-butyl ether 3.5 ug/m3 09/09/24 15:32 1.4811m-Xylene & p-Xylene 10 ug/m3 09/09/24 15:32 1.48NDNaphthalene 3.5 ug/m3 09/09/24 15:32 1.48NDo-Xylene 4.5 ug/m3 09/09/24 15:32 1.48NDToluene 6.9 ug/m3 09/09/24 15:32 1.4811Xylenes, Total Isopropyl ether TIC ND ppm v/v 108-20-3 09/09/24 15:32 1.48 Tentatively Identified Compound Dil FacAnalyzedPreparedUnitDQualifierEst. Result CAS No.RT Isopropyl ether TIC ND ug/m3 108-20-3 09/09/24 15:32 1.48 Tentatively Identified Compound Dil FacAnalyzedPreparedUnitDQualifierEst. Result CAS No.RT 4-Bromofluorobenzene (Surr)102 60-140 09/09/24 15:32 1.48 Surrogate Dil FacAnalyzedPreparedQualifierLimits%Recovery Eurofins Knoxville Page 9 of 22 9/10/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Client Sample Results Job ID: 140-38266-1Client: AECOM Project/Site: PPL Guilford Greene Lab Sample ID: 140-38266-4Client Sample ID: SG-4-20240829 Matrix: AirDate Collected: 08/29/24 11:26 Date Received: 08/30/24 09:15 Sample Container: Summa Canister 6L Method: EPA TO 15 LL - Volatile Organic Compounds in Ambient Air, Low Concentration (GC/MS) RL MDL ND 0.010 ppm v/v 09/09/24 17:09 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier 2-Methylnaphthalene 0.00080 ppm v/v 09/09/24 17:09 1NDBenzene 0.00080 ppm v/v 09/09/24 17:09 1NDEthylbenzene 0.0040 ppm v/v 09/09/24 17:09 1NDMethyl tert-butyl ether 0.00080 ppm v/v 09/09/24 17:09 1NDm-Xylene & p-Xylene 0.0020 ppm v/v 09/09/24 17:09 1NDNaphthalene 0.00080 ppm v/v 09/09/24 17:09 1NDo-Xylene 0.0012 ppm v/v 09/09/24 17:09 1NDToluene 0.0016 ppm v/v 09/09/24 17:09 1NDXylenes, Total RL MDL ND 58 ug/m3 09/09/24 17:09 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier 2-Methylnaphthalene 2.6 ug/m3 09/09/24 17:09 1NDBenzene 3.5 ug/m3 09/09/24 17:09 1NDEthylbenzene 14 ug/m3 09/09/24 17:09 1NDMethyl tert-butyl ether 3.5 ug/m3 09/09/24 17:09 1NDm-Xylene & p-Xylene 10 ug/m3 09/09/24 17:09 1NDNaphthalene 3.5 ug/m3 09/09/24 17:09 1NDo-Xylene 4.5 ug/m3 09/09/24 17:09 1NDToluene 6.9 ug/m3 09/09/24 17:09 1NDXylenes, Total Isopropyl ether TIC ND ppm v/v 108-20-3 09/09/24 17:09 1 Tentatively Identified Compound Dil FacAnalyzedPreparedUnitDQualifierEst. Result CAS No.RT Isopropyl ether TIC ND ug/m3 108-20-3 09/09/24 17:09 1 Tentatively Identified Compound Dil FacAnalyzedPreparedUnitDQualifierEst. Result CAS No.RT 4-Bromofluorobenzene (Surr)100 60-140 09/09/24 17:09 1 Surrogate Dil FacAnalyzedPreparedQualifierLimits%Recovery Eurofins Knoxville Page 10 of 22 9/10/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Default Detection Limits Client: AECOM Job ID: 140-38266-1 Project/Site: PPL Guilford Greene Method: TO 15 LL - Volatile Organic Compounds in Ambient Air, Low Concentration (GC/MS) 0.00102-Methylnaphthalene ppm v/v Analyte UnitsMDLRL 0.00063 5.82-Methylnaphthalene ug/m33.7 0.000080Benzene ppm v/v0.000013 0.26Benzene ug/m30.042 0.000080Ethylbenzene ppm v/v0.000013 0.35Ethylbenzene ug/m30.056 0.00040Methyl tert-butyl ether ppm v/v0.000052 1.4Methyl tert-butyl ether ug/m30.19 0.000080m-Xylene & p-Xylene ppm v/v0.000029 0.35m-Xylene & p-Xylene ug/m30.13 0.00020Naphthalene ppm v/v0.000039 1.0Naphthalene ug/m30.20 0.000080o-Xylene ppm v/v0.000015 0.35o-Xylene ug/m30.065 0.00012Toluene ppm v/v0.000023 0.45Toluene ug/m30.087 0.00016Xylenes, Total ppm v/v0.000015 0.69Xylenes, Total ug/m30.065 Eurofins Knoxville Page 11 of 22 9/10/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Surrogate Summary Job ID: 140-38266-1Client: AECOM Project/Site: PPL Guilford Greene Method: TO 15 LL - Volatile Organic Compounds in Ambient Air, Low Concentration (GC/MS) Prep Type: Total/NAMatrix: Air Lab Sample ID Client Sample ID (60-140) BFB 99140-38266-1 Percent Surrogate Recovery (Acceptance Limits) SG-1-20240829 104140-38266-2 SG-2-20240829 102140-38266-3 SG-3-20240829 100140-38266-4 SG-4-20240829 116LCS 140-90767/1002 Lab Control Sample 100MB 140-90767/3 Method Blank Surrogate Legend BFB = 4-Bromofluorobenzene (Surr) Eurofins Knoxville Page 12 of 22 9/10/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 QC Sample Results Job ID: 140-38266-1Client: AECOM Project/Site: PPL Guilford Greene Method: TO 15 LL - Volatile Organic Compounds in Ambient Air, Low Concentration (GC/MS) Client Sample ID: Method BlankLab Sample ID: MB 140-90767/3 Matrix: Air Prep Type: Total/NA Analysis Batch: 90767 RL MDL 2-Methylnaphthalene ND 0.0010 ppm v/v 09/09/24 11:00 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResultQualifier ND 0.000080 ppm v/v 09/09/24 11:00 1Benzene ND 0.000080 ppm v/v 09/09/24 11:00 1Ethylbenzene ND 0.00040 ppm v/v 09/09/24 11:00 1Methyl tert-butyl ether ND 0.000080 ppm v/v 09/09/24 11:00 1m-Xylene & p-Xylene ND 0.00020 ppm v/v 09/09/24 11:00 1Naphthalene ND 0.000080 ppm v/v 09/09/24 11:00 1o-Xylene ND 0.00012 ppm v/v 09/09/24 11:00 1Toluene ND 0.00016 ppm v/v 09/09/24 11:00 1Xylenes, Total RL MDL 2-Methylnaphthalene ND 5.8 ug/m3 09/09/24 11:00 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResultQualifier ND 0.26 ug/m3 09/09/24 11:00 1Benzene ND 0.35 ug/m3 09/09/24 11:00 1Ethylbenzene ND 1.4 ug/m3 09/09/24 11:00 1Methyl tert-butyl ether ND 0.35 ug/m3 09/09/24 11:00 1m-Xylene & p-Xylene ND 1.0 ug/m3 09/09/24 11:00 1Naphthalene ND 0.35 ug/m3 09/09/24 11:00 1o-Xylene ND 0.45 ug/m3 09/09/24 11:00 1Toluene ND 0.69 ug/m3 09/09/24 11:00 1Xylenes, Total 4-Bromofluorobenzene (Surr)100 60-140 09/09/24 11:00 1 MB MB Surrogate Dil FacPreparedAnalyzedQualifierLimits%Recovery Client Sample ID: Lab Control SampleLab Sample ID: LCS 140-90767/1002 Matrix: Air Prep Type: Total/NA Analysis Batch: 90767 2-Methylnaphthalene 0.00200 0.00101 ppm v/v 51 20-180 Analyte LCS LCS DUnitResultQualifier %Rec Spike Added %Rec Limits Benzene 0.00200 0.00195 ppm v/v 98 70-130 Ethylbenzene 0.00200 0.00213 ppm v/v 107 70-130 Methyl tert-butyl ether 0.00200 0.00164 ppm v/v 82 60-140 m-Xylene & p-Xylene 0.00400 0.00472 ppm v/v 118 70-130 Naphthalene 0.00200 0.00200 ppm v/v 100 60-140 o-Xylene 0.00200 0.00238 ppm v/v 119 70-130 Toluene 0.00200 0.00205 ppm v/v 102 70-130 Xylenes, Total 0.00600 0.00710 ppm v/v 118 70-130 2-Methylnaphthalene 12 5.88 ug/m3 51 20-180 Analyte LCS LCS DUnitResultQualifier %Rec Spike Added %Rec Limits Benzene 6.4 6.23 ug/m3 98 70-130 Ethylbenzene 8.7 9.27 ug/m3 107 70-130 Methyl tert-butyl ether 7.2 5.93 ug/m3 82 60-140 m-Xylene & p-Xylene 17 20.5 ug/m3 118 70-130 Naphthalene 10 10.5 ug/m3 100 60-140 o-Xylene 8.7 10.4 ug/m3 119 70-130 Toluene 7.5 7.72 ug/m3 102 70-130 Eurofins Knoxville Page 13 of 22 9/10/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 QC Sample Results Job ID: 140-38266-1Client: AECOM Project/Site: PPL Guilford Greene Method: TO 15 LL - Volatile Organic Compounds in Ambient Air, Low Concentration (GC/MS) (Continued) Client Sample ID: Lab Control SampleLab Sample ID: LCS 140-90767/1002 Matrix: Air Prep Type: Total/NA Analysis Batch: 90767 Xylenes, Total 26 30.8 ug/m3 118 70-130 Analyte LCS LCS DUnitResultQualifier %Rec Spike Added %Rec Limits 4-Bromofluorobenzene (Surr)60 -140 Surrogate 116 LCS LCS Qualifier Limits%Recovery Eurofins Knoxville Page 14 of 22 9/10/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 QC Association Summary Job ID: 140-38266-1Client: AECOM Project/Site: PPL Guilford Greene Air - GC/MS VOA Analysis Batch: 90767 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Air TO 15 LL140-38266-1 SG-1-20240829 Total/NA Air TO 15 LL140-38266-2 SG-2-20240829 Total/NA Air TO 15 LL140-38266-3 SG-3-20240829 Total/NA Air TO 15 LL140-38266-4 SG-4-20240829 Total/NA Air TO 15 LLMB 140-90767/3 Method Blank Total/NA Air TO 15 LLLCS 140-90767/1002 Lab Control Sample Total/NA Eurofins Knoxville Page 15 of 22 9/10/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Lab Chronicle Client: AECOM Job ID: 140-38266-1 Project/Site: PPL Guilford Greene Client Sample ID: SG-1-20240829 Lab Sample ID: 140-38266-1 Matrix: AirDate Collected: 08/29/24 13:30 Date Received: 08/30/24 09:15 Analysis TO 15 LL S1K09/09/24 13:551.42 EET KNX90767 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 71 mL 500 mL Instrument ID:MG Client Sample ID: SG-2-20240829 Lab Sample ID: 140-38266-2 Matrix: AirDate Collected: 08/29/24 14:40 Date Received: 08/30/24 09:15 Analysis TO 15 LL S1K09/09/24 14:441 EET KNX90767 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 50 mL 500 mL Instrument ID:MG Client Sample ID: SG-3-20240829 Lab Sample ID: 140-38266-3 Matrix: AirDate Collected: 08/29/24 15:31 Date Received: 08/30/24 09:15 Analysis TO 15 LL S1K09/09/24 15:321.48 EET KNX90767 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 74 mL 500 mL Instrument ID:MG Client Sample ID: SG-4-20240829 Lab Sample ID: 140-38266-4 Matrix: AirDate Collected: 08/29/24 11:26 Date Received: 08/30/24 09:15 Analysis TO 15 LL S1K09/09/24 17:091 EET KNX90767 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 50 mL 500 mL Instrument ID:MG Client Sample ID: Method Blank Lab Sample ID: MB 140-90767/3 Matrix: AirDate Collected: N/A Date Received: N/A Analysis TO 15 LL S1K09/09/24 11:001 EET KNX90767 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 500 mL 500 mL Instrument ID:MG Client Sample ID: Lab Control Sample Lab Sample ID: LCS 140-90767/1002 Matrix: AirDate Collected: N/A Date Received: N/A Analysis TO 15 LL S1K09/09/24 10:081 EET KNX90767 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 500 mL 500 mL Instrument ID:MG Laboratory References: EET KNX = Eurofins Knoxville, 5815 Middlebrook Pike, Knoxville, TN 37921, TEL (865)291-3000 Eurofins Knoxville Page 16 of 22 9/10/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Method Summary Job ID: 140-38266-1Client: AECOM Project/Site: PPL Guilford Greene Method Method Description LaboratoryProtocol EPATO 15 LL Volatile Organic Compounds in Ambient Air, Low Concentration (GC/MS)EET KNX Protocol References: EPA = US Environmental Protection Agency Laboratory References: EET KNX = Eurofins Knoxville, 5815 Middlebrook Pike, Knoxville, TN 37921, TEL (865)291-3000 Eurofins Knoxville Page 17 of 22 9/10/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Sample Summary Client: AECOM Job ID: 140-38266-1 Project/Site: PPL Guilford Greene Lab Sample ID Client Sample ID Matrix Collected Received Asset ID 140-38266-1 SG-1-20240829 Air 08/29/24 13:30 08/30/24 09:15 Air Canister (6-Liter) #12197 140-38266-2 SG-2-20240829 Air 08/29/24 14:40 08/30/24 09:15 Air Canister (6-Liter) #12533 140-38266-3 SG-3-20240829 Air 08/29/24 15:31 08/30/24 09:15 Air Canister (6-Liter) #11565 140-38266-4 SG-4-20240829 Air 08/29/24 11:26 08/30/24 09:15 Air Canister (6-Liter) #34000356 Eurofins KnoxvillePage 18 of 22 9/10/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Page 19 of 22 9/10/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Page 20 of 22 9/10/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Gauge ID:G5 Date/Time:09/04/24 1116 Analyst Sample ID Pressure @ Receipt (-in Hg or +psig)/initial pressurisation (if applicable) Asset #Cleaning Job Cert Type Size (L)Comments TJH 140-38266-a-1 -7.2/1.1 12197 140-37758-a-13 B 6 TJH 140-38266-a-2 -6.3 12533 140-37758-a-15 B 6 TJH 140-38266-a-3 -8.4/0.9 11565 140-37758-a-14 B 6 TJH 140-38266-a-4 -6.0 34000356 140-37758-a-16 B 6 Eurofins Knoxville - Air Canister Initial Pressure Check 140-38266-a-1 MS038 r16, 2/12/22 Page 21 of 22 9/10/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Summa Canister Dilution Worksheet Job No.: 140-38266-1Client: AECOM Project/Site: PPL Guilford Greene Canister Preadjusted Lab Sample ID (L)("Hg)(atm)(L)(psig)(atm)(L)Factor Factor Date Analyst Initals Volume Pressure Preadjusted Adjusted Pressure Preadjusted Volume Pressure Adjusted Pressure Adjusted Volume Dilution Final Dilution Initial Volume (mL) 140-38266-1 6 0.76 4.56-7.2 09/04/24 11:281.421.421.071.1 6.45 ID Pressure Gauge G5 CAL 140-38266-3 6 0.72 4.32-8.4 09/04/24 11:301.481.481.060.9 6.37 G5 CAL Formulae: Preadjusted Volume (L)= ((Preadjusted Pressure ("Hg) + 29.92 "Hg) * Vol L ) / 29.92 "Hg Adjusted Volume (L) = (( Adjusted Pressure (psig) + 14.7 psig )* Vol L ) / 14.7 psig Dilution Factor = Adjusted Volume (L) / Preadjusted Volume (L) Where: 29.92 "Hg = Standard atmospheric pressure in inches of Mercury (“Hg) 14.7 psig = Standard atmospheric pressure in pounds per square inch gauge (psig) Eurofins Knoxville Page 22 of 22 9/10/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 ANALYTICAL REPORT PREPARED FOR Attn: Brandt Morrow AECOM 900 Perimeter Park Drive Suite A Morrisville, North Carolina 27560 Generated 12/4/2024 10:50:06 AM JOB DESCRIPTION PPL Guilford Greene JOB NUMBER 140-39637-1 See page two for job notes and contact information. Knoxville TN 37921 5815 Middlebrook Pike Eurofins Knoxville Page 1 of 21 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Eurofins Knoxville Eurofins Knoxville is a laboratory within TestAmerica Laboratories, Inc., a company within Eurofins Environment Testing Group of Companies Job Notes This report may not be reproduced except in full, and with written approval from the laboratory. The results relate only to the samples tested. For questions please contact the Project Manager at the e-mail address or telephone number listed on this page. The test results in this report relate only to the samples as received by the laboratory and will meet all requirements of the methodology, with any exceptions noted. This report shall not be reproduced except in full, without the express written approval of the laboratory. All questions should be directed to the Eurofins TestAmerica Project Manager. Authorization Generated 12/4/2024 10:50:06 AM Authorized for release by Jamie McKinney, Senior Project Manager Jamie.McKinney@et.eurofinsus.com (865)291-3000 Page 2 of 21 12/4/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Table of Contents Client: AECOM Project/Site: PPL Guilford Greene Laboratory Job ID: 140-39637-1 Page 3 of 21 Eurofins Knoxville12/4/2024 Cover Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 Table of Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 Definitions/Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 Case Narrative . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 Detection Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 Client Sample Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7 Default Detection Limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11 Surrogate Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12 QC Sample Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13 QC Association Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15 Lab Chronicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16 Method Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17 Sample Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18 Chain of Custody . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19 Receipt Checklists . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Definitions/Glossary Job ID: 140-39637-1Client: AECOM Project/Site: PPL Guilford Greene Qualifiers Air - GC/MS VOA Qualifier Description *+LCS and/or LCSD is outside acceptance limits, high biased. Qualifier E Result exceeded calibration range. Glossary These commonly used abbreviations may or may not be present in this report. ☼Listed under the "D" column to designate that the result is reported on a dry weight basis Abbreviation %R Percent Recovery CFL Contains Free Liquid CFU Colony Forming Unit CNF Contains No Free Liquid DER Duplicate Error Ratio (normalized absolute difference) Dil Fac Dilution Factor DL Detection Limit (DoD/DOE) DL, RA, RE, IN Indicates a Dilution, Re-analysis, Re-extraction, or additional Initial metals/anion analysis of the sample DLC Decision Level Concentration (Radiochemistry) EDL Estimated Detection Limit (Dioxin) LOD Limit of Detection (DoD/DOE) LOQ Limit of Quantitation (DoD/DOE) MCL EPA recommended "Maximum Contaminant Level" MDA Minimum Detectable Activity (Radiochemistry) MDC Minimum Detectable Concentration (Radiochemistry) MDL Method Detection Limit ML Minimum Level (Dioxin) MPN Most Probable Number MQL Method Quantitation Limit NC Not Calculated ND Not Detected at the reporting limit (or MDL or EDL if shown) NEG Negative / Absent POS Positive / Present PQL Practical Quantitation Limit PRES Presumptive QC Quality Control RER Relative Error Ratio (Radiochemistry) RL Reporting Limit or Requested Limit (Radiochemistry) RPD Relative Percent Difference, a measure of the relative difference between two points TEF Toxicity Equivalent Factor (Dioxin) TEQ Toxicity Equivalent Quotient (Dioxin) TNTC Too Numerous To Count Eurofins Knoxville Page 4 of 21 12/4/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Job Narrative140-39637-1 Receipt The samples were received on 11/23/2024 9:45 AM.Unless otherwise noted below,the samples arrived in good condition,and where required,properly preserved and on ice. Air -GC/MS VOAEPAmethodsTO-14A and TO-15 specify the use of humidified "zero air"as the blank reagent for canister cleaning,instrument calibration and sample analysis.Ultra-high purity humidified nitrogen from a cryogenic reservoir is used in place of "zero air"by Eurofins TestAmerica Knoxville. Method TO 15 LL:The continuing calibration verification (CCV)associated with batch 140-93623 recovered above the upper control limit for 2-Methylnaphthalene.The samples associated with this CCV were non-detects for the affected analytes;therefore, the data have been reported. Method TO 15 LL:The laboratory control sample (LCS)for analytical batch 140-93623 recovered outside control limits for the following analytes:2-Methylnaphthalene.These analytes were biased high in the LCS and were not detected in the associated samples;therefore,the data have been reported. No additional analytical or quality issues were noted,other than those described above or in the Definitions/Glossary page. Case Narrative Client: AECOM Job ID: 140-39637-1 Project: PPL Guilford Greene Eurofins Knoxville Job ID: 140-39637-1 Eurofins Knoxville Page 5 of 21 12/4/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Detection Summary Job ID: 140-39637-1Client: AECOM Project/Site: PPL Guilford Greene Client Sample ID: SG-1-20241122 Lab Sample ID: 140-39637-1 No Detections. Client Sample ID: SG-2-20241122 Lab Sample ID: 140-39637-2 No Detections. Client Sample ID: SG-3-20241122 Lab Sample ID: 140-39637-3 No Detections. Client Sample ID: SG-4-20241122 Lab Sample ID: 140-39637-4 m-Xylene & p-Xylene RL 0.00080 ppm v/v MDLAnalyteResultQualifier Unit Dil Fac D Method Prep Type Total/NA10.0017 TO 15 LL Xylenes, Total 0.0016 ppm v/v Total/NA10.0017 TO 15 LL m-Xylene & p-Xylene RL 3.5 ug/m3 MDLAnalyteResultQualifier Unit Dil Fac D Method Prep Type Total/NA17.2 TO 15 LL Xylenes, Total 6.9 ug/m3 Total/NA17.4 TO 15 LL Eurofins Knoxville This Detection Summary does not include radiochemical test results. Page 6 of 21 12/4/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 140-39637-1Client: AECOM Project/Site: PPL Guilford Greene Lab Sample ID: 140-39637-1Client Sample ID: SG-1-20241122 Matrix: AirDate Collected: 11/22/24 12:06 Date Received: 11/23/24 09:45 Sample Container: Summa Canister 6L Method: EPA TO 15 LL - Volatile Organic Compounds in Ambient Air, Low Concentration (GC/MS) RL MDL ND *+0.010 ppm v/v 11/27/24 23:02 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier 2-Methylnaphthalene 0.00080 ppm v/v 11/27/24 23:02 1NDBenzene 0.00080 ppm v/v 11/27/24 23:02 1NDEthylbenzene 0.0040 ppm v/v 11/27/24 23:02 1NDMethyl tert-butyl ether 0.00080 ppm v/v 11/27/24 23:02 1NDm-Xylene & p-Xylene 0.0020 ppm v/v 11/27/24 23:02 1NDNaphthalene 0.00080 ppm v/v 11/27/24 23:02 1NDo-Xylene 0.0012 ppm v/v 11/27/24 23:02 1NDToluene 0.0016 ppm v/v 11/27/24 23:02 1NDXylenes, Total RL MDL ND *+58 ug/m3 11/27/24 23:02 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier 2-Methylnaphthalene 2.6 ug/m3 11/27/24 23:02 1NDBenzene 3.5 ug/m3 11/27/24 23:02 1NDEthylbenzene 14 ug/m3 11/27/24 23:02 1NDMethyl tert-butyl ether 3.5 ug/m3 11/27/24 23:02 1NDm-Xylene & p-Xylene 10 ug/m3 11/27/24 23:02 1NDNaphthalene 3.5 ug/m3 11/27/24 23:02 1NDo-Xylene 4.5 ug/m3 11/27/24 23:02 1NDToluene 6.9 ug/m3 11/27/24 23:02 1NDXylenes, Total Isopropyl ether TIC ND ppm v/v 108-20-3 11/27/24 23:02 1 Tentatively Identified Compound Dil FacAnalyzedPreparedUnitDQualifierEst. Result CAS No.RT Isopropyl ether TIC ND ug/m3 108-20-3 11/27/24 23:02 1 Tentatively Identified Compound Dil FacAnalyzedPreparedUnitDQualifierEst. Result CAS No.RT 4-Bromofluorobenzene (Surr)85 60-140 11/27/24 23:02 1 Surrogate Dil FacAnalyzedPreparedQualifierLimits%Recovery Eurofins Knoxville Page 7 of 21 12/4/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 140-39637-1Client: AECOM Project/Site: PPL Guilford Greene Lab Sample ID: 140-39637-2Client Sample ID: SG-2-20241122 Matrix: AirDate Collected: 11/22/24 12:20 Date Received: 11/23/24 09:45 Sample Container: Summa Canister 6L Method: EPA TO 15 LL - Volatile Organic Compounds in Ambient Air, Low Concentration (GC/MS) RL MDL ND *+0.010 ppm v/v 11/27/24 23:52 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier 2-Methylnaphthalene 0.00080 ppm v/v 11/27/24 23:52 1NDBenzene 0.00080 ppm v/v 11/27/24 23:52 1NDEthylbenzene 0.0040 ppm v/v 11/27/24 23:52 1NDMethyl tert-butyl ether 0.00080 ppm v/v 11/27/24 23:52 1NDm-Xylene & p-Xylene 0.0020 ppm v/v 11/27/24 23:52 1NDNaphthalene 0.00080 ppm v/v 11/27/24 23:52 1NDo-Xylene 0.0012 ppm v/v 11/27/24 23:52 1NDToluene 0.0016 ppm v/v 11/27/24 23:52 1NDXylenes, Total RL MDL ND *+58 ug/m3 11/27/24 23:52 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier 2-Methylnaphthalene 2.6 ug/m3 11/27/24 23:52 1NDBenzene 3.5 ug/m3 11/27/24 23:52 1NDEthylbenzene 14 ug/m3 11/27/24 23:52 1NDMethyl tert-butyl ether 3.5 ug/m3 11/27/24 23:52 1NDm-Xylene & p-Xylene 10 ug/m3 11/27/24 23:52 1NDNaphthalene 3.5 ug/m3 11/27/24 23:52 1NDo-Xylene 4.5 ug/m3 11/27/24 23:52 1NDToluene 6.9 ug/m3 11/27/24 23:52 1NDXylenes, Total Isopropyl ether TIC ND ppm v/v 108-20-3 11/27/24 23:52 1 Tentatively Identified Compound Dil FacAnalyzedPreparedUnitDQualifierEst. Result CAS No.RT Isopropyl ether TIC ND ug/m3 108-20-3 11/27/24 23:52 1 Tentatively Identified Compound Dil FacAnalyzedPreparedUnitDQualifierEst. Result CAS No.RT 4-Bromofluorobenzene (Surr)85 60-140 11/27/24 23:52 1 Surrogate Dil FacAnalyzedPreparedQualifierLimits%Recovery Eurofins Knoxville Page 8 of 21 12/4/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 140-39637-1Client: AECOM Project/Site: PPL Guilford Greene Lab Sample ID: 140-39637-3Client Sample ID: SG-3-20241122 Matrix: AirDate Collected: 11/22/24 12:35 Date Received: 11/23/24 09:45 Sample Container: Summa Canister 6L Method: EPA TO 15 LL - Volatile Organic Compounds in Ambient Air, Low Concentration (GC/MS) RL MDL ND *+0.010 ppm v/v 11/28/24 00:42 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier 2-Methylnaphthalene 0.00080 ppm v/v 11/28/24 00:42 1NDBenzene 0.00080 ppm v/v 11/28/24 00:42 1NDEthylbenzene 0.0040 ppm v/v 11/28/24 00:42 1NDMethyl tert-butyl ether 0.00080 ppm v/v 11/28/24 00:42 1NDm-Xylene & p-Xylene 0.0020 ppm v/v 11/28/24 00:42 1NDNaphthalene 0.00080 ppm v/v 11/28/24 00:42 1NDo-Xylene 0.0012 ppm v/v 11/28/24 00:42 1NDToluene 0.0016 ppm v/v 11/28/24 00:42 1NDXylenes, Total RL MDL ND *+58 ug/m3 11/28/24 00:42 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier 2-Methylnaphthalene 2.6 ug/m3 11/28/24 00:42 1NDBenzene 3.5 ug/m3 11/28/24 00:42 1NDEthylbenzene 14 ug/m3 11/28/24 00:42 1NDMethyl tert-butyl ether 3.5 ug/m3 11/28/24 00:42 1NDm-Xylene & p-Xylene 10 ug/m3 11/28/24 00:42 1NDNaphthalene 3.5 ug/m3 11/28/24 00:42 1NDo-Xylene 4.5 ug/m3 11/28/24 00:42 1NDToluene 6.9 ug/m3 11/28/24 00:42 1NDXylenes, Total Isopropyl ether TIC ND ppm v/v 108-20-3 11/28/24 00:42 1 Tentatively Identified Compound Dil FacAnalyzedPreparedUnitDQualifierEst. Result CAS No.RT Isopropyl ether TIC ND ug/m3 108-20-3 11/28/24 00:42 1 Tentatively Identified Compound Dil FacAnalyzedPreparedUnitDQualifierEst. Result CAS No.RT 4-Bromofluorobenzene (Surr)87 60-140 11/28/24 00:42 1 Surrogate Dil FacAnalyzedPreparedQualifierLimits%Recovery Eurofins Knoxville Page 9 of 21 12/4/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 140-39637-1Client: AECOM Project/Site: PPL Guilford Greene Lab Sample ID: 140-39637-4Client Sample ID: SG-4-20241122 Matrix: AirDate Collected: 11/22/24 11:55 Date Received: 11/23/24 09:45 Sample Container: Summa Canister 6L Method: EPA TO 15 LL - Volatile Organic Compounds in Ambient Air, Low Concentration (GC/MS) RL MDL ND *+0.010 ppm v/v 11/28/24 01:31 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier 2-Methylnaphthalene 0.00080 ppm v/v 11/28/24 01:31 1NDBenzene 0.00080 ppm v/v 11/28/24 01:31 1NDEthylbenzene 0.0040 ppm v/v 11/28/24 01:31 1NDMethyl tert-butyl ether 0.00080 ppm v/v 11/28/24 01:31 10.0017m-Xylene & p-Xylene 0.0020 ppm v/v 11/28/24 01:31 1NDNaphthalene 0.00080 ppm v/v 11/28/24 01:31 1NDo-Xylene 0.0012 ppm v/v 11/28/24 01:31 1NDToluene 0.0016 ppm v/v 11/28/24 01:31 10.0017Xylenes, Total RL MDL ND *+58 ug/m3 11/28/24 01:31 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier 2-Methylnaphthalene 2.6 ug/m3 11/28/24 01:31 1NDBenzene 3.5 ug/m3 11/28/24 01:31 1NDEthylbenzene 14 ug/m3 11/28/24 01:31 1NDMethyl tert-butyl ether 3.5 ug/m3 11/28/24 01:31 17.2m-Xylene & p-Xylene 10 ug/m3 11/28/24 01:31 1NDNaphthalene 3.5 ug/m3 11/28/24 01:31 1NDo-Xylene 4.5 ug/m3 11/28/24 01:31 1NDToluene 6.9 ug/m3 11/28/24 01:31 17.4Xylenes, Total Isopropyl ether TIC ND ppm v/v 108-20-3 11/28/24 01:31 1 Tentatively Identified Compound Dil FacAnalyzedPreparedUnitDQualifierEst. Result CAS No.RT Isopropyl ether TIC ND ug/m3 108-20-3 11/28/24 01:31 1 Tentatively Identified Compound Dil FacAnalyzedPreparedUnitDQualifierEst. Result CAS No.RT 4-Bromofluorobenzene (Surr)85 60-140 11/28/24 01:31 1 Surrogate Dil FacAnalyzedPreparedQualifierLimits%Recovery Eurofins Knoxville Page 10 of 21 12/4/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Default Detection Limits0 Client: AECOM Job ID: 140-39637-1 Project/Site: PPL Guilford Greene Method: TO 15 LL - Volatile Organic Compounds in Ambient Air, Low Concentration (GC/MS) 2-Methylnaphthalene Analyte MDLRL 0.00027 ppm v/v0.0010 ppm v/v 2-Methylnaphthalene 1.6 ug/m35.8 ug/m3 Benzene 0.000013 ppm v/v0.000080 ppm v/v Benzene 0.042 ug/m30.26 ug/m3 Ethylbenzene 0.000018 ppm v/v0.000080 ppm v/v Ethylbenzene 0.078 ug/m30.35 ug/m3 Methyl tert-butyl ether 0.000052 ppm v/v0.00040 ppm v/v Methyl tert-butyl ether 0.19 ug/m31.4 ug/m3 m-Xylene & p-Xylene 0.000039 ppm v/v0.000080 ppm v/v m-Xylene & p-Xylene 0.17 ug/m30.35 ug/m3 Naphthalene 0.000039 ppm v/v0.00020 ppm v/v Naphthalene 0.20 ug/m31.0 ug/m3 o-Xylene 0.000020 ppm v/v0.000080 ppm v/v o-Xylene 0.087 ug/m30.35 ug/m3 Toluene 0.000062 ppm v/v0.00012 ppm v/v Toluene 0.23 ug/m30.45 ug/m3 Xylenes, Total 0.000020 ppm v/v0.00016 ppm v/v Xylenes, Total 0.087 ug/m30.69 ug/m3 Eurofins Knoxville Page 11 of 21 12/4/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Surrogate Summary Job ID: 140-39637-1Client: AECOM Project/Site: PPL Guilford Greene Method: TO 15 LL - Volatile Organic Compounds in Ambient Air, Low Concentration (GC/MS) Prep Type: Total/NAMatrix: Air Lab Sample ID Client Sample ID (60-140) BFB 85140-39637-1 Percent Surrogate Recovery (Acceptance Limits) SG-1-20241122 85140-39637-2 SG-2-20241122 87140-39637-3 SG-3-20241122 85140-39637-4 SG-4-20241122 89LCS 140-93623/1002 Lab Control Sample 83MB 140-93623/3 Method Blank Surrogate Legend BFB = 4-Bromofluorobenzene (Surr) Eurofins Knoxville Page 12 of 21 12/4/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 140-39637-1Client: AECOM Project/Site: PPL Guilford Greene Method: TO 15 LL - Volatile Organic Compounds in Ambient Air, Low Concentration (GC/MS) Client Sample ID: Method BlankLab Sample ID: MB 140-93623/3 Matrix: Air Prep Type: Total/NA Analysis Batch: 93623 RL MDL 2-Methylnaphthalene ND 0.0010 ppm v/v 11/27/24 11:09 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResultQualifier ND 0.000080 ppm v/v 11/27/24 11:09 1Benzene ND 0.000080 ppm v/v 11/27/24 11:09 1Ethylbenzene ND 0.00040 ppm v/v 11/27/24 11:09 1Methyl tert-butyl ether ND 0.000080 ppm v/v 11/27/24 11:09 1m-Xylene & p-Xylene ND 0.00020 ppm v/v 11/27/24 11:09 1Naphthalene ND 0.000080 ppm v/v 11/27/24 11:09 1o-Xylene ND 0.00012 ppm v/v 11/27/24 11:09 1Toluene ND 0.00016 ppm v/v 11/27/24 11:09 1Xylenes, Total RL MDL 2-Methylnaphthalene ND 5.8 ug/m3 11/27/24 11:09 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResultQualifier ND 0.26 ug/m3 11/27/24 11:09 1Benzene ND 0.35 ug/m3 11/27/24 11:09 1Ethylbenzene ND 1.4 ug/m3 11/27/24 11:09 1Methyl tert-butyl ether ND 0.35 ug/m3 11/27/24 11:09 1m-Xylene & p-Xylene ND 1.0 ug/m3 11/27/24 11:09 1Naphthalene ND 0.35 ug/m3 11/27/24 11:09 1o-Xylene ND 0.45 ug/m3 11/27/24 11:09 1Toluene ND 0.69 ug/m3 11/27/24 11:09 1Xylenes, Total 4-Bromofluorobenzene (Surr)83 60-140 11/27/24 11:09 1 MB MB Surrogate Dil FacPreparedAnalyzedQualifierLimits%Recovery Client Sample ID: Lab Control SampleLab Sample ID: LCS 140-93623/1002 Matrix: Air Prep Type: Total/NA Analysis Batch: 93623 2-Methylnaphthalene 0.00200 0.00424 E *+ppm v/v 212 20-180 Analyte LCS LCS DUnitResultQualifier %Rec Spike Added %Rec Limits Benzene 0.00200 0.00219 ppm v/v 109 70-130 Ethylbenzene 0.00200 0.00199 ppm v/v 99 70-130 Methyl tert-butyl ether 0.00200 0.00187 ppm v/v 93 60-140 m-Xylene & p-Xylene 0.00400 0.00409 ppm v/v 102 70-130 Naphthalene 0.00200 0.00256 ppm v/v 128 60-140 o-Xylene 0.00200 0.00197 ppm v/v 98 70-130 Toluene 0.00200 0.00198 ppm v/v 99 70-130 Xylenes, Total 0.00600 0.00606 ppm v/v 101 70-130 2-Methylnaphthalene 12 24.7 E *+ug/m3 212 20-180 Analyte LCS LCS DUnitResultQualifier %Rec Spike Added %Rec Limits Benzene 6.4 6.99 ug/m3 109 70-130 Ethylbenzene 8.7 8.63 ug/m3 99 70-130 Methyl tert-butyl ether 7.2 6.73 ug/m3 93 60-140 m-Xylene & p-Xylene 17 17.8 ug/m3 102 70-130 Naphthalene 10 13.4 ug/m3 128 60-140 o-Xylene 8.7 8.55 ug/m3 98 70-130 Toluene 7.5 7.46 ug/m3 99 70-130 Eurofins Knoxville Page 13 of 21 12/4/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 140-39637-1Client: AECOM Project/Site: PPL Guilford Greene Method: TO 15 LL - Volatile Organic Compounds in Ambient Air, Low Concentration (GC/MS) (Continued) Client Sample ID: Lab Control SampleLab Sample ID: LCS 140-93623/1002 Matrix: Air Prep Type: Total/NA Analysis Batch: 93623 Xylenes, Total 26 26.3 ug/m3 101 70-130 Analyte LCS LCS DUnitResultQualifier %Rec Spike Added %Rec Limits 4-Bromofluorobenzene (Surr)60 -140 Surrogate 89 LCS LCS Qualifier Limits%Recovery Eurofins Knoxville Page 14 of 21 12/4/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Association Summary Job ID: 140-39637-1Client: AECOM Project/Site: PPL Guilford Greene Air - GC/MS VOA Analysis Batch: 93623 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Air TO 15 LL140-39637-1 SG-1-20241122 Total/NA Air TO 15 LL140-39637-2 SG-2-20241122 Total/NA Air TO 15 LL140-39637-3 SG-3-20241122 Total/NA Air TO 15 LL140-39637-4 SG-4-20241122 Total/NA Air TO 15 LLMB 140-93623/3 Method Blank Total/NA Air TO 15 LLLCS 140-93623/1002 Lab Control Sample Total/NA Eurofins Knoxville Page 15 of 21 12/4/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Lab Chronicle Client: AECOM Job ID: 140-39637-1 Project/Site: PPL Guilford Greene Client Sample ID: SG-1-20241122 Lab Sample ID: 140-39637-1 Matrix: AirDate Collected: 11/22/24 12:06 Date Received: 11/23/24 09:45 Analysis TO 15 LL S1K11/27/24 23:021 EET KNX93623 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 50 mL 500 mL Instrument ID:MS Client Sample ID: SG-2-20241122 Lab Sample ID: 140-39637-2 Matrix: AirDate Collected: 11/22/24 12:20 Date Received: 11/23/24 09:45 Analysis TO 15 LL S1K11/27/24 23:521 EET KNX93623 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 50 mL 500 mL Instrument ID:MS Client Sample ID: SG-3-20241122 Lab Sample ID: 140-39637-3 Matrix: AirDate Collected: 11/22/24 12:35 Date Received: 11/23/24 09:45 Analysis TO 15 LL S1K11/28/24 00:421 EET KNX93623 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 50 mL 500 mL Instrument ID:MS Client Sample ID: SG-4-20241122 Lab Sample ID: 140-39637-4 Matrix: AirDate Collected: 11/22/24 11:55 Date Received: 11/23/24 09:45 Analysis TO 15 LL S1K11/28/24 01:311 EET KNX93623 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 50 mL 500 mL Instrument ID:MS Client Sample ID: Method Blank Lab Sample ID: MB 140-93623/3 Matrix: AirDate Collected: N/A Date Received: N/A Analysis TO 15 LL S1K11/27/24 11:091 EET KNX93623 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 500 mL 500 mL Instrument ID:MS Client Sample ID: Lab Control Sample Lab Sample ID: LCS 140-93623/1002 Matrix: AirDate Collected: N/A Date Received: N/A Analysis TO 15 LL S1K11/27/24 10:161 EET KNX93623 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 500 mL 500 mL Instrument ID:MS Laboratory References: EET KNX = Eurofins Knoxville, 5815 Middlebrook Pike, Knoxville, TN 37921, TEL (865)291-3000 Eurofins Knoxville Page 16 of 21 12/4/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Method Summary Job ID: 140-39637-1Client: AECOM Project/Site: PPL Guilford Greene Method Method Description LaboratoryProtocol EPATO 15 LL Volatile Organic Compounds in Ambient Air, Low Concentration (GC/MS)EET KNX Protocol References: EPA = US Environmental Protection Agency Laboratory References: EET KNX = Eurofins Knoxville, 5815 Middlebrook Pike, Knoxville, TN 37921, TEL (865)291-3000 Eurofins Knoxville Page 17 of 21 12/4/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Sample Summary Client: AECOM Job ID: 140-39637-1 Project/Site: PPL Guilford Greene Lab Sample ID Client Sample ID Matrix Collected Received Asset ID 140-39637-1 SG-1-20241122 Air 11/22/24 12:06 11/23/24 09:45 Air Canister (6-Liter) #11960 140-39637-2 SG-2-20241122 Air 11/22/24 12:20 11/23/24 09:45 Air Canister (6-Liter) #11192 140-39637-3 SG-3-20241122 Air 11/22/24 12:35 11/23/24 09:45 Air Canister (6-Liter) #12662 140-39637-4 SG-4-20241122 Air 11/22/24 11:55 11/23/24 09:45 Air Canister (6-Liter) #8362 Eurofins KnoxvillePage 18 of 21 12/4/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Page 19 of 21 12/4/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Page 20 of 21 12/4/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Gauge ID:G5 Date/Time:11/25/24 1050 Analyst Sample ID Pressure @ Receipt (-in Hg or +psig)/initial pressurisation (if applicable) Asset #Cleaning Job Cert Type Size (L)Comments CAL 140-39637-a-1 -6.4 11960 140-39097-a-2 B 6 CAL 140-39637-a-2 -5.6 11192 140-39097-a-14 B 6 CAL 140-39637-a-3 -5.6 12662 140-39097-a-12 B 6 CAL 140-39637-a-4 -4.4 8362 140-39097-a-11 B 6 Eurofins Knoxville - Air Canister Initial Pressure Check 140-39637-a-1 MS038 r16, 2/12/22 Page 21 of 21 12/4/2024 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15