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DC410064_20240708_Prioritization Assessment Report
AECOM 5438 Wade Park Boulevard, Suite 200 Raleigh, NC 27607 T: 919.461.1100 aecom.com July 8, 2024 North Carolina Department of Environmental Quality Division of Waste Management – DSCA Program 1646 Mail Service Center Raleigh, NC 27699-1646 Attn: Ms. Ariana Rivera DSCA Project Manager Re: Prioritization Assessment Report Frye & Webster Cleaners, DSCA Site ID DC410064 608 Elwell Avenue Greensboro, Guilford County, North Carolina Dear Ms. Rivera: AECOM Technical Services of North Carolina, Inc. (AECOM) is pleased to provide the attached Prioritization Assessment Report for Frye & Webster Cleaners (site) located at 608 Elwell Avenue in Greensboro, Guilford County, North Carolina. Frye & Webster Cleaners is an active dry-cleaner that operated using petroleum solvents from approximately 1955 through 1995, using chlorinated solvents from 1995 through 2015, and currently uses a water-based dry-cleaning technique. The building is split into the active dry-cleaner on the northern half and a vacant southern half which has been used for storage by the dry-cleaner at times. A general site location map is included as Figure 1, and a site map with facility layout is included as Figure 2. The immediate surrounding land use is designated as commercial mixed use as shown on Figure 3. Land use to the north is residential and recreational, and east, south, and west along Elwell Avenue land use is largely commercial. 1.0 Site History Based on data obtained from the DSCA Program, Guilford County GIS, and the Limited Soil & Groundwater Assessment report prepared by Pyramid Environmental & Engineering, P.C. (Pyramid) dated November 1, 2021 (Pyramid, 2021), the site building (located at 608 and 606 Elwell Avenue) was constructed in 1940 and has operated as a dry-cleaner since at least 1955. The site operated as a petroleum solvent dry-cleaner from at least 1955 through 1995, using an unknown petroleum-based dry-cleaning fluid. In 1995, the petroleum solvent machine was replaced with a tetrachloroethylene (PCE) dry-cleaning machine which was located near the back of the building. The approximate locations of the dry-cleaning machines present in 608 Elwell Avenue over time are shown in Figure 2. In 2015, a new water-based MIELE® Machine was installed. According to a DSCA Compliance Inspection Memo dated August 24, 2018, use of the PCE machine was discontinued at the site in January 2017, and the inspector verified that the PCE dry-cleaning machine was disconnected from a power source, no solvent was left inside the solvent tanks, that no solvent or solvent waste was stored on site, and the last waste pickup occurred on March 30, 2018, at which time Safety Kleen picked up 500 pounds of liquid waste. The actual date that the PCE machine was removed from the building was not documented. While the section of the building listed as 606 Elwell Avenue has never been used as an operational part of the dry-cleaner, it has been utilized for storage by the dry cleaner, and an unmarked 55-gallon drum, presumed to contain PCE solvent, was present in the 606 Elwell Avenue tenant space until removal by the dry-cleaning business owner in May 2024. Based on the investigation completed in 2021 by Pyramid, samples from soil boring (SB-2) near the location of the former PCE machine indicated concentrations of PCE in exceedance of the North Carolina Protection of Frye & Webster Cleaners DSCA Site ID DC410064 Page 2 of 7 Groundwater Preliminary Soil Remediation Goal (PSRG), and groundwater samples collected from two temporary monitoring wells (TW-1 and TW-2) indicated exceedances of PCE above the North Carolina Department of Environmental Quality (NCDEQ) 15A NCAC 2L Standard (2L Standard) for groundwater (Pyramid, 2021). Concentrations of trichloroethylene (TCE), cis-1,2-dichloroethylene (cis-1,2-DCE), and vinyl chloride above the 2L Standard were also detected in groundwater samples collected from TW-2. The locations of the historic soil borings are shown on Figure 4 and locations of temporary monitoring wells are shown on Figure 5. 2.0 Surrounding Land Use AECOM reviewed available zoning and land use information for the site and surrounding area from the City of Greensboro’s GIS website: https://greensboro.maps.arcgis.com/apps/webappviewer/index.html?id=3abbd307081d4cbdb7b1c4c56437c404. The site/subject property is currently zoned for commercial medium use (C-M) and designated for commercial land use by the City of Greensboro. Most of the immediately surrounding properties (adjacent to the site) to the east and south are also C-M properties designated for commercial use. North and west of the site are generally zoned for residential single-family or multi-family use. Further east from the site is primarily public and institutional land. The land use designations for the site and surrounding properties are presented on Figure 3. 3.0 Soil Quality Assessment Activities In January 2024, AECOM initiated soil assessment activities to determine the extent of soil contamination above PSRG onsite. AECOM collected soil samples from nine soil borings (SB-3 through SB-11) located in areas where dry-cleaning impacts were likely to be present based on the location of general dry-cleaning operations as shown on Figure 4. - Soil borings SB-3 and SB-4 were located adjacent to the historical locations of dry-cleaning machines. - Soil borings SB-5 and SB-6 were located behind the building near the PCE machine vent pipe. - Soil borings SB-7 and SB-8 were located in the alleyway between 608 Elwell Avenue and the neighboring building located at 610 Elwell Avenue. - Soil borings SB-9 and SB-11 were located west of the building outside the front, and SB-10 was located near the bay doors at the adjacent 606 Elwell Avenue tenant space where drums of solvent may have been loaded/unloaded. Each shallow soil boring was completed using a hand auger advanced to a depth of at least five feet below ground surface (ft bgs) and screened in one-foot intervals for head space readings for volatile organic compounds (VOCs) using a photoionization detector (PID). Per the attached Standard Operating Procedure (SOP), included as Appendix A, two soil samples were collected at each borehole: one surficial soil sample from ground surface to one foot depth, and one sample from the one- to five-foot intervals which exhibited the highest PID reading (not including the sample collected from ground surface to one foot depth). Soil samples were submitted to Pace Analytical Laboratories, Inc. (Pace) for analysis of volatile organic compounds (VOC) by United States Environmental Protection Agency (EPA) Method SW-846 8260D. Analytical results indicated that one or both samples from soil borings SB-3, SB-5, SB-6, SB-7, and SB-10 exhibited PCE concentrations that exceeded the PSRG of 0.0063 milligrams per kilogram (mg/kg). The surficial sample at SB-3 also contained TCE concentrations that exceeded the PSRG of 0.021 mg/kg. Soil impacts appear to be delineated on the western portion of the site, as illustrated on Figure 4. Additional soil assessment will be necessary to the north, east and south to delineate impacts to the protection of groundwater PSRG. Analytical results are tabulated in Table 2. Soil boring logs are included in Appendix B and laboratory analytical reports are included in Appendix C. Frye & Webster Cleaners DSCA Site ID DC410064 Page 3 of 7 4.0 Groundwater Quality Assessment Activities Monitoring Well Installation To further evaluate groundwater quality at the site, AECOM oversaw the installation of four monitoring wells (MW- 1 through MW-4) by Geologic Exploration, Inc. in January 2024. - Monitoring well MW-1 was installed on the northwestern corner of the property. - Monitoring well MW-2 was installed on the southwest corner of the shared parking lot for the area businesses. - Monitoring well MW-3 was installed on the southeast corner of the shared parking lot. - Monitoring well MW-4 was installed on the northeast corner of the property. The locations of the monitoring wells are indicated on Figure 5. The monitoring wells were surveyed for top of casing elevation and coordinates during the February 2024 groundwater sampling event using a hand-held GPS unit (VRS). Monitoring well construction data are summarized on Table 6, and monitoring well construction logs are included in Appendix D. Groundwater Sampling and Results On February 9, 2024, AECOM gauged the depth to water in monitoring wells MW-1 through MW-4 and conducted a comprehensive groundwater sampling event. As shown on Figure 6, groundwater flow is generally toward the north. Groundwater gauging elevation data is tabulated on Table 7. Groundwater samples were collected using low-flow groundwater sampling methods as described in the Low-Flow Minimal Drawdown Sampling SOP provided in Appendix A. Groundwater samples collected from the newly installed monitoring wells were submitted to Pace for analysis for VOCs by USEPA Method SW-846 8260D. Groundwater sampling forms are included in Appendix E. Analytical results indicated PCE concentrations of 1.60 micrograms per liter (µg/l) in monitoring well MW-1 and 63.3 µg/l in monitoring well MW-4, both of which exceed the 2L Standard of 0.7 µg/l. TCE was also detected above the 2L Standard in monitoring wells MW-2 and MW-4. Benzene concentrations above the 2L Standard were detected in samples collected from each site monitoring well (MW-1 through MW-4). Several other VOCs were found above their respective 2L Standards in MW-1, MW-2, and MW-4, including cis-1,2-DCE, vinyl chloride, 1,2- dichloroethane, methyl tert-butyl ether (MTBE), naphthalene, 1,1,2-trichloroethane, 1,2-dichloropropane, and di- isopropyl ether. As indicated on Figure 5, the adjacent property to the south, 3201 E Bessemer Ave, is an active underground storage tank (UST) facility (Higgin’s Curb Market; Facility ID: 00-0-0000009969) with multiple Notice of Violation letters from the Division of Waste Management (DWM) since 2019. Based on the proximity of the UST site, the direction of groundwater flow, and the configuration and magnitude of petroleum impacts, it is likely that detections of petroleum-related compounds such as benzene, MTBE, and naphthalene in groundwater samples collected from site wells originated from offsite. Groundwater sampling results from the February 2024 event are summarized on Figure 5. The extent of groundwater impacts has not been fully delineated. Groundwater sampling data are summarized in Table 8 and field parameter data are summarized on Table 12. Laboratory analytical reports are included in Appendix C. Frye & Webster Cleaners DSCA Site ID DC410064 Page 4 of 7 DSCA groundwater to indoor air vapor intrusion risk calculators are included in Appendix F and summarized below: Sample ID Sample Date Cumulative Risk: Resident Non-Residential Worker CR HI CR HI MW-1 2/9/2024 3.6E-04 4.3E+00 8.2E-05 1.0E+00 MW-2 2/9/2024 3.7E-03 4.4E+01 8.5E-04 1.1E+01 MW-3 2/9/2024 1.4E-06 1.7E-02 3.3E-07 4.0E-03 MW-4 2/9/2024 6.7E-05 1.3E+01 1.1E-05 3.1E+00 CR = Calculated cumulative carcinogenic risk; acceptable calculated risk values are less than 1E-04; unacceptable calculated risk values are greater than 1E-04. HI = Calculated non-carcinogenic hazard quotient; acceptable hazard index values are less than 1.0; unacceptable hazard index values are greater than 1.0. 5.0 Sub-Slab Vapor and Soil Gas Quality Assessment Activities In January and February 2024, AECOM collected soil gas samples from eleven temporary soil gas monitoring points (SG-1 through SG-11) to evaluate potential vapor intrusion risk around the building and near areas with a higher likelihood of contamination from the former dry-cleaning operations. The locations of soil gas samples SG- 1 through SG-6 and SG-9 through SG-11 are indicated on Figure 6. The soil gas sample implants were installed at approximately five ft bgs using a decontaminated hand auger in accordance with the attached SOP (Appendix A). The vapor samples were submitted to Enthalpy Analytical (Enthalpy) for analysis by EPA Method TO-15 of a site-specific list of compounds including PCE, TCE, cis-1,2-DCE, trans-1,2-DCE, and vinyl chloride, as well as compounds detected in soil samples at concentrations greater than the PSRG, and/or in groundwater at concentrations which represent a hazard quotient ≥ 0.1 or carcinogenic risk ≥ 1E-06 when entered in the DSCA Groundwater to Indoor Air Risk Calculator, in accordance with DSCA Contractor Bulletin # 32 - Determination of COCs for VI Investigations, dated June 25, 2018. Laboratory analytical results are summarized on Figure 7. Soil gas sampling forms are included with the SOP in Appendix A. Soil gas sample SG-8 was not collected due to shallow saturated soil conditions, likely caused by poor drainage from a building rain gutter present near the sampling area. Soil gas sample SG-7 was collected and held by the laboratory for analysis after review of soil analytical results but could not be analyzed due to laboratory error. As indicated on Figure 7, soil gas samples SG-1 and SG-11 exceeded acceptable calculated vapor intrusion risk for both residential and non-residential worker exposure. Soil gas samples SG-2, SG-3, SG-4, SG-5, and SG-10 exceeded acceptable calculated vapor intrusion risk for residential exposure but did not exceed acceptable calculated risk for non-residential worker exposure. Soil gas samples SG-6 and SG-9 contained concentrations of PCE and other VOCs above the laboratory reporting limit but below calculated risk levels for residential and non- residential worker exposure. DSCA Risk Calculators are included in Appendix F and summarized below: Frye & Webster Cleaners DSCA Site ID DC410064 Page 5 of 7 Sample ID Sample Date Cumulative Risk: Resident Non-Residential Worker CR HI CR HI SG-1 1/31/2024 1.1E-02 2.4E+03 7.3E-04 1.9E+02 SG-2 1/31/2024 4.6E-06 1.4E+00 3.4E-07 1.1E-01 SG-3 1/31/2024 4.1E-05 1.0E+01 3.0E-06 8.3E-01 SG-4 2/1/2024 6.4E-06 8.2E+00 4.8E-07 6.5E-01 SG-5 1/29/2024 2.0E-05 5.5E+00 1.3E-06 4.4E-01 SG-6 2/1/2024 5.7E-07 9.7E-02 4.4E-08 7.7E-03 SG-9 1/31/2024 5.4E-06 2.4E-01 4.1E-07 1.9E-02 SG-10 1/31/2024 5.2E-06 1.3E+00 3.9E-07 1.1E-01 SG-11 1/31/2024 2.5E-02 4.8E+03 1.6E-03 3.8E+02 CR = Calculated cumulative carcinogenic risk; acceptable calculated risk values are less than 1E-04; unacceptable calculated risk values are greater than 1E-04. HI = Calculated non-carcinogenic hazard quotient; acceptable hazard index values are less than 1.0; unacceptable hazard index values are greater than 1.0. Laboratory analytical reports are included in Appendix C. Soil gas analytical data collected to date are summarized in Table 4 and presented on Figure 7. As indicated on Figure 7, areas of soil gas contaminant concentrations exceeding acceptable calculated risk for residential exposure have been delineated at the northwest corner of the site, and areas of soil gas contaminant concentrations that exceed acceptable risk for non-residential exposure have been sufficiently delineated to the north, east, and west of the site building. 6.0 Indoor Air Quality Assessment Activities On March 15, 2024, AECOM collected one indoor air sample to assess the air quality inside the dry-cleaning facility located in the 608 Elwell Avenue side of the building. An indoor air sample was not collected from the 606 Elwell Avenue side of the building as that side is unoccupied and not in condition typical of occupancy. The location of indoor air sample IA-1 is indicated on Figure 7. A stainless-steel summa canister with an eight-hour flow regulator was placed inside the facility, in accordance with the attached SOP (Appendix A). The indoor air sample was submitted to Enthalpy Analytical (Enthalpy) for analysis by EPA Method TO-15 of a site-specific list of VOC compounds including PCE, TCE, cis-1,2-DCE, trans-1,2-DCE, and vinyl chloride, as well as compounds detected in soil samples at concentrations greater than the PSRG, and/or in groundwater at concentrations which represent a hazard quotient ≥ 0.1 or carcinogenic risk ≥ 1E-06 when entered in the DSCA Groundwater to Indoor Air Risk Calculator, in accordance with DSCA Contractor Bulletin # 32 - Determination of COCs for VI Investigations, dated June 25, 2018. Laboratory analytical results are summarized on Figure 7. The indoor air building survey form is included with the SOP in Appendix A. As indicated on Figure 7, indoor air sample IA-1 contained concentrations of several analytes above the laboratory reporting limit (PCE, benzene, ethylbenzene, xylenes, chloroform, and 1,2,4-trimethylbenzene) but did not exceed acceptable calculated vapor intrusion risk for either residential or non-residential worker exposure. DSCA Risk Calculators are included in Appendix F and summarized below: Frye & Webster Cleaners DSCA Site ID DC410064 Page 6 of 7 Sample ID Sample Date Cumulative Risk: Resident Non-Residential Worker CR HI CR HI IA-1 3/15/2024 7.0E-06 1.1E-01 1.6E-06 2.7E-02 CR = Calculated cumulative carcinogenic risk; acceptable calculated risk values are less than 1E-04. HI = Calculated non-carcinogenic hazard quotient; acceptable hazard index values are less than 1.0. Laboratory analytical reports are included in Appendix C. March 2024 indoor air analytical data are summarized in Table 5 and presented on Figure 7. As indicated on Figure 7, no indoor air contamination has been found above acceptable limits. 7.0 Site Geology and Hydrogeology According to the 1985 North Carolina Geological Map, the site is underlain by late Proterozoic to late Cambrian metamorphosed granitic rock. Soil types encountered during the subsurface investigations completed at the site include red-yellow to brown silty CLAY (CL), described on the United States Department of Agriculture (USDA) Web Soil Survey website (https://websoilsurvey.nrcs.usda.gov/app/WebSoilSurvey.aspx) as Vance-Urban land complex soil. The uppermost aquifer, in which the site monitoring wells are screened, is classified as an unconfined surficial aquifer, and depth to groundwater ranges from 10.99 (MW-1) to 14.35 (MW-4) feet below top of casing (ft btoc) as measured in monitoring wells MW-1 through MW-4 in February 2024. Groundwater flow at the site is generally to the north. Groundwater potentiometric data are summarized on Figure 6. 8.0 Receptor Information In accordance with DSCA Guidance pursuant to receptor surveys, AECOM conducted a windshield survey and reviewed available online resources to document water supply wells and other sensitive receptors located within a 0.5-mile radius of the site. There are two riverine habitats approximately 0.22 miles from the site, one to the northeast and one to the northwest, and one approximately 0.36 miles away to the southwest; however, no ponds, lakes, or wetlands were observed or recorded within 0.5 miles of the site. No evidence of private water supply wells was observed during the February 2024 windshield survey. In addition, AECOM prepared and sent 53 public outreach letters to surrounding property owners located within a 500-foot radius of the dry-cleaning facility, as documented in a Completion Documentation of the Public Outreach Mailings report, dated April 30, 2024. Of the 18 returned water supply well information request forms, one property owner indicated the presence of a water supply well on their property. AECOM attempted to contact the property owner to ask for additional information about the supply well but has not received a response as of June 2024. Four churches were identified within 0.5 miles of the site, the nearest of which is located adjacent to the site (606 Elwell Avenue). The Otis L. Hairston Middle School is located approximately 0.28 miles southeast of the site, and several parks and recreational fields exist in conjunction with the school. Additionally, Bessemer Elementary School is located approximately 0.32 miles northeast of the site. A figure summarizing sensitive receptors within a 500-foot and 0.5-mile radius of the site is included as Figure 8. Site photographs for reference are included as Appendix G. 9.0 Investigative Derived Waste (IDW) Investigative derived waste (IDW) generated during assessment activities included soil cuttings from drilling, boring advancement, soil sampling, and soil gas point installation; development water post well construction; and purge water generated during groundwater sampling. During each event, IDW was placed in closed, properly labeled, 55-gallon drums that were stored onsite until transported to a licensed hazardous waste facility by a waste disposal contractor. The waste manifest documenting IDW generated to date is included as Appendix H. Frye & Webster Cleaners DSCA Site ID DC410064 Page 7 of 7 10.0 Review of Laboratory Analytical Reports In respect to the usability and reliance of analytical results provided by Pace - AECOM received Pace’s laboratory reports dated February 19 and February 26, 2024. Pace is a North Carolina certified laboratory (North Carolina Environmental Certificate # 375. As documented in the laboratory analytical report (Appendix C), “results reported herein conform to the applicable TNI/NELAC Standards and the laboratory's Quality Manual, where applicable, unless otherwise noted in the body of the report”. Data are deemed usable for the purposes of the assessment activities and conclusions documented in this submittal. In respect to the usability and reliance of analytical results provided by Enthalpy - AECOM received Enthalpy’s laboratory reports dated February 15 and March 7, 2024. As documented in the laboratory analytical report (Appendix C), “The results presented in this report are representative of the samples as provided to the laboratory.” Data are deemed usable for the purposes of the assessment activities and conclusions documented in this submittal. If you have any questions or require additional information, please do not hesitate to call either Rob MacWilliams at 704-499-4839 or Stephanie Hempel at 919-548-4330. Sincerely, AECOM TECHNICAL SERVICES OF NORTH CAROLINA, INC. Stephanie Hempel, PG Robert H. MacWilliams, PG Project Manager Program Manager Enclosures Table of Contents DSCA ID No.: DC410064 Form 1 Form 2 Form 3 Form 4 Form 5 Form 6 Table 1 Table 2 Table 4 Table 5 Table 6 Table 7 Table 8 Table 10 Table 12 Figure 1 Figure 2 Figure 3 Figure 4 Soil Quality Summary Map Figure 5 Groundwater Quality Summary Map - February 2024 Figure 6 Figure 7 Vapor Quality Summary Map Figure 8 Sensitive Receptor Map App. A App. B App. C Analytical Laboratory Reports App. D App. E App. F App. G App. H Analytical Data Tables (ADTs) Assessment Report Forms Facility Information Site History Land Use and Receptor Survey Groundwater Use, Surface Water Use, and Ecological Survey Site Stratigraphy and Hydrogeology Non-Aqueous Phase Liquid (NAPL) Information Site Chronology Analytical Data for Soil Analytical Data for Soil Gas Analytical Data for Indoor and Outdoor Air Monitoring Well Construction Data Groundwater Elevation Data Analytical Data for Groundwater Water Well(s) Survey Data Surrounding Land Use Map Groundwater Contour Map - February 2024 DSCA Vapor Intrusion Risk Calculators Standard Operating Procedures Monitoring Well Construction Data Groundwater Sampling Forms Soil Boring Logs Photographic Log Waste Manifest Appendices Figures Site Location Map Site Layout Map Analytical Data for Natural Attenuation Parameters DSCA ID No.: Submittal Date: Assessment Report Forms for North Carolina Dry-Cleaning Solvent Cleanup Act Program Prepared By: Facility Name:Frye & Webster Cleaners 608 Elwell Avenue, Greensboro, Guilford County North Carolina 5438 Wade Park Bvd, Suite 200, Raleigh, North Carolina AECOM Technical Services of North Carolina, Inc. July 2024 DC410064 Facility Information DSCA ID No.: DC410064 Currently operating facility since Previously operating facility since Temporarily out of service from to Permanently out of service since Facility name: Facility telephone number (if applicable): Facility Owner's Name: Owner's Mailing Address: Owner's Telephone number: Contractor Date Printed Name Company Name AR Form 1 I certify that the prioritization assessment as stated in this report was prepared under my supervision. AECOM 7/8/2024Carolina, Inc. Stephanie Hempel 336-379-1732 336-379-1732 At least 1955 Provide the earliest known date of the facility use for dry-cleaning business and the name of the dry-cleaning buisness (if applicable). Report Prepared By 608 Elwell Avenue Greensboro, Guilford County, North Carolinacentre and the county where facility is located): 608 Elwell Avenue Greensboro, North Carolina 27405 James Woo The site operated as a varsol/petroleum-based dry cleaners from approximately 1955 through 1995, as a tetrachloroethylene (PCE) dry cleaners from 1995 to 2015, and currently operates as a MIELE water-based dry-cleaner. The varsol machine and PCE machines have been removed from site. 1955, Frye and Webster Cleaners Provide information on businesses that occupied the facility that may use or have used solvents and other chemicals. Identify solvents and chemicals used at the facility (if applicable). Frye & Webster Cleaners dry-cleaning business owner. If no current business at the facility, provide the name and address of the last dry-cleaner doing business at the site. Site History DSCA ID No.: DC410064 Number of dry-cleaning machines used at current or former facility: Type of dry-cleaning solvents used by each type of machine. Unknown petroleum-based solvent, PCE solvent, water (respectively) According to a DSCA Compliance Inspection Memo dated August 24, 2018, use of the PCE machine was discontinued at the site in January 2017, and the inspector verified that the PCE dry-cleaning machine was disconnected from a power source, no solvent was left inside the solvent tanks, that no solvent or solvent waste was stored on site, and the last waste pickup occurred on March 30, 2018, at which time Safety Kleen picked up 500 pounds of liquid waste. An unmarked 55-gallon drum, presumed to contain PCE solvent, was present in the 606 Elwell Avenue tenant space until removal by the dry-cleaning business owner in May 2024. What methods of disposal are used or have been used for separator water? If yes, provide information about the substance stored, year taken out of service, virgin solvent or waste solvent, etc. While the 606 Elwell Avenue portion of the building has never been used as an operational part of the dry-cleaner, it was utilized for storage by the dry cleaner, and an unmarked 55-gallon drum, presumed to contain PCE solvent, was present in the 606 Elwell Avenue tenant space until removal by the dry- cleaning business owner in May 2024. No USTs, ASTs, or evidence of former tanks were found onsite and the owner did not indicate the existence of any. Separator is not currently in use. Historical practices are unknown; however, an apparent separator mister pipe surrounded by severely corroded cinderblocks is visible on the rear wall of the dry-cleaner building. Where are/were the dry-cleaning solvents stored at the facility site? (Machine base tanks, UST(s), AST(s), etc.) Machine base tanks AR Form 2 Are chlorinated dry cleaning solvents delivered to the facility by means of a closed, direct-coupled delivery system? No Are virgin (new)solvents stored in containers other than the dry- cleaning machine? Are or were any USTs or ASTs used to store any petroleum or hazardous substances other than dry-cleaning solvents at the facility 1955-1995, one petroleum-based dry-cleaning machine; 1995-2017, one PCE dry-cleaning machine; 2015-present, one water-based dry-cleaning machine. 1 current Type of dry-cleaning machines used at current or former facility (e.g., transfer, dry-to-dry with vented exhaust, etc.). Provide information about the current/historical waste management practices, including types of wastes that are/were generated and how the waste are/were stored and managed. Yes No Yes No Unpaved Paved % area paved: Any visible cracks in pavement? Have the utilities been screened for vapor levels? If YES, attach documentation of vapor monitoring results. Depth [feet] Type of Material Flow Direction Impacted by Release Potentially Impacted by Release Sanitary sewer Unknown Unknown Unknown Unknown Unknown Septic drainfields Covered storm sewer Unknown Unknown Unknown Unknown Unknown Open ditch Water line Unknown Unknown Unknown Unknown Unknown Gas line Unknown Unknown Unknown Unknown Electric line Unknown Unknown Unknown Unknown Telephone line Overhead Other Has the release been abated? Is native soil impacted? Is groundwater impacted? Is surface water impacted? UST(s)/AST(s) removal Known spill incident Inventory control Citizen complaint Facility remodeling/Construction activity Assessment on adjacent property Environmental assessment Unknown Other (specify) Indicate which of the following utilities currently act as conduits, or are likely to become conduits, under the columns entitled "Impacted by Release," and "Potentially Impacted by Release," respectively. In the space provided for additional notes, please indicate the location and distance from soil and/or groundwater contamination to the nearest subsurface utility line and access point (e.g., manhole). Ground Surface Conditions Subsurface Utilities Surface water samples not collected 20 Release Characterization found contamination of both soil and groundwater including PCE and related constituents. No longer using PCE/petroleum onsite Release Discovery Soil and groundwater assessment involved with property transaction found contamination of both soil and groundwater including PCE and related constituents. Soil and groundwater assessment involved with property transaction Date the release was discovered Date the release was reported Type of release (explain) 1-Sep-21 1-Nov-21 The time and location of the release are unknown. Yes No Yes No Yes No Yes No Yes No Yes No Spills/Overfills Tanks Piping Unknown Other (specify) 1,1,1-Trichloroethane cis-1,2-Dichloroethylene 1,1,2,2-Tetrachloroethane Ethylbenzene 1,1,2-Trichloroethanae Methyl tert-butyl ether (MTBE) 1,1-Dichloroethane Naphthalene 1,1-Dichloroethylene Tetrachloroethylene 1,2-Dichloroethane (EDC) Toluene Benzene trans-1,2-Dichloroethylene Benzo(a)pyrene Trichloroethylene Carbon tetrachloride Vinyl chloride Chloroform Xylenes (total) Others Historical dry-cleaning operations Chemicals of Concern Source(s) of Release Chemicals of concern listed above are those analytes that have been detected in groundwater at concentrations above the NCAC 2L Groundwater Standards (2L Standards) or in soil samples above the Protection of Groundwater Preliminary Soil Remediation Goal (PSRG). Soil: PCE contamination above the PSRG is present beneath the northeastern portion of 608 Elwell Ave (northern) half of the building, along the firewall in 608 Elwell Ave, and is inferred to extend to the outside the southern wall in the vicinity of bay doors in the 606 Elwell Ave half of the building. Soil Gas: Results of samples SG-1 and SG-11, collected between the area of the former PCE machine in 608 Elwell Ave, and between the fire door and the bay doors on southern wall of building in 606 Elwell Ave, respectively, exceed acceptable calculated risk for non-residential worker use when entered into the DSCA Soil Gas to Indoor Air Risk Calculators. Groundwater: Exceedances of PCE 2L Standards in MW-1 (northwest corner of property), MW-2 (southwest corner), and MW-4 (northeast corner). Exceedances of benzene 2L Standards in all four monitoring wells; notably highest in MW-2 adjacent to gas station. Additional Notes 1,2-Dichloropropane Di-isopropyl Ether Land Use and Receptor Survey DSCA ID No.: DC410064 On-site Land Use Current Future Residential Commercial/Industrial Other Justify the choice for future land use: North: Northeast: Northwest: South: Southeast: Southwest: West: East: Nearest residential site: Nearest commercial/industrial site: If site is vacant, nearest inhabited building: Nearest school, hospital, day care, nursing home etc.: Nearest public supply well: Nearest private supply well: Nearest surface water body: AR Form 3 Land Use Distance [feet] Direction Recreational/residential - a church and then several single-family residences Commercial - auto repair Elwell Avenue, then residences Commercial - auto repairs, Higgins Curb Market gas station Commercial - auto repair The site is currently a water-based dry-cleaning operation in a well-developed area, surrounded by other commercial and residential properties. It is unlikely that future use will change from commercial. Immediate Off-site Land Use (within 500 feet -at a minimum,state whether,residential, commercial/industrial, agricultural, or ecologically sensitive area). Indicate distances to residential/commercial/industrial buildings having basements which are occupied. Receptor Survey Nearest ecologically sensitive area (agricultural areas, parks/recreational areas, widlife sanctuaries, wetlands): Nearest point of exposure (current or potential) for groundwater ingestion: 100 Elwell Avenue, then neighborhood grocery store Residential North Auto repair and then residential List the distance and the direction (downgradient, upgradient, or crossgradient) to these facilites within 0.5 mile radius of the site (If necessary provide details in additional notes). 20 NA 1,200 East NA Northeast 185 NA 1,200 Site Northeast Property boundary Additional Notes Nearest point of exposure (potential) is assumed to be the downgradient property boundary. The nearest ecologically sensitive receptor is an unnamed tributary to Muddy Creek, located approximately 1,200 feet northeast of the subject property, which appears to be downgradient. There are several churches and a mosque within the search radius, the nearest of which being directly adjacent to the north. A private well is reportedly located at 3217 East Bessemer Avenue, approximately 185 feet upgradient from the subject property. 5 North (church) None within 1 mi NA Groundwater Use, Surface Water Use, and Ecological Survey DSCA ID No.: DC410064 Is the groundwater used on-site? If yes, specify the use: Potable domestic supply Non-potable domestic supply Public/Municipal supply Industrial supply Agriculture Other (explain in space provided below) Is a surface water body present in 1,000 feet radius of the site? If yes, specify the following: Type of water body North Carolina classification of water body Does the water discharges into lake or reservoir? Surface water use: Potable domestic supply Non-potable domestic supply Public/Municipal supply Industrial supply Agriculture Other (explain in space provided below) 2. Are there private water supply wells within 1500 feet radius from the site? A tributary to Muddy Creek is located approximately 1,200 feet northeast of the subject property. Additional Notes One private well is reportedly located at 3217 East Bessemer Avenue, approximately 185 feet southeast (upgradient) of the site, as documented in a Completion Documentation of the Public Outreach Mailings report, dated April 30, 2024. 1. Are there public/municipal water supply wells within 0.5 mile radius from the AR Form 4 Water Well(s) Information Surface Water Use Ecological Receptors and Habitats 1. Are there any ecological receptors or habitats present within 500 feet radius from the site? 2. Are there visible indications of stressed receptors or habitats on or near the site that may be a result of chemical release? Groundwater Use Yes No River Wet weather creek Drain ditch Regular creek Yes No Yes No Yes No Yes No Other: Yes No Yes No Site Stratigraphy and Hydrogeology DSCA ID No.: DC410064 Depth [feet] 0-20 Predominent Soil Type: Depth [feet] Unknown Type of Aquifer? Underlying predominent aquifer name: Aquifer classification (if applicable): Range of groundwater level fluctuations [feet bgs]: Average depth to water table/static water level: Flow direction: Hydraulic gradient (i) [--]: Hydraulic conductivity (K) [cm/year]: Darcy velocity (K x i) [cm/year-calculated]: Groundwater velocity (K x i/Porosity) [cm/year]: Annual precipitation (average for last 30 years) [inches/year]: Description of Soil Additional Notes Range of groundwater fluctuations and average depth to water is taken from measurements of monitoring wells MW-1 though MW-4 on February 9, 2024. A hydraulic gradient of 0.0102 ft/ft was calculated between MW-1 and MW-2 using February 2024 gauging data. An estimated hydraulic conductivity based on published values for clay was used (Domenico and Schwartz, 1990). Average annual precipitation obtained from U.S. Climate Data website (https://www.usclimatedata.com/climate/greensboro/north-carolina/united-states/usnc0280). ~10-14 feet Hydrogeology of the Saturated Impacted Zone 1.51 12.42 AR Form 5 Stratigraphy of Site north 0.01 surficial aquifer NA 7.56 Red-yellow to red-brown silty clay Metamorphosed Granitic Rock (Geologic Map of NC; NCGS, 1985) 148.22 39.25 Type of Bedrock and Geological Formation Confined Unconfined Perched Values/Range Method Dry bulk density [g/cm3]1.45 Estimated Measured Total porosity [cm3/cm3]:0.5 Estimated Measured Effective porosity [cm3/cm3]:0.2 Estimated Measured Water content [cm3/cm3]:47.00% Estimated Measured Fractional organic carbon content [g-C/g-soil]: Estimated Measured Values/Range Method Dry bulk density [g/cm3]1.45 Estimated Measured Total porosity [cm3/cm3]:0.5 Estimated Measured Effective porosity [cm3/cm3]0.2 Estimated Measured Water content [cm3/cm3]:47 Estimated Measured Fractional organic carbon content [g-C/g-soil]: Estimated Measured Additional Notes Vadose Zone Characteristics Saturated Zone Characteristics Values based on literature [Dry bulk density based on median soil value (ASTM, 1995), and total porosity, effective porosity, and water content estimated based on observations of similar soils at other locations (Yu et al, 1993; Hillel, 2003; Peck et al, 1974; and Domenico et al, 1990)]. Non-Aqueous Phase Liquid (NAPL) Information DSCA ID No.: DC410064 Was NAPL discovered at the site: If Yes, type of NAPL discovered: LNAPL DNAPL Date LNAPL was discovered? Type of LNAPL discovered (if known): Number of monitoring wells/points currently at site: Has LNAPL removal started? If No, cite reason: If Yes, specify method of removal (bailer, pump, etc.): Removal points (MW #, Boring #, etc.): Total number of recovery events to date: Total amount of purge-water recovered: Total amount of LNAPL recovered: Date of latest LNAPL removal report submitted: Date DNAPL was discovered? Type of DNAPL discovered (if known): Number of monitoring wells/points currently at site: Has DNAPL removal started? If No, cite reason: If Yes, specify method of removal (bailer, pump, etc.): Removal points (MW #, Boring #, etc.): Total number of recovery events to date: Total amount of purge-water recovered: Total amount of DNAPL recovered: Date of latest DNAPL removal report submitted: Number of monitoring wells/points containing DNAPL (Note if any, list the monitoring wells/points Number of monitoring wells/points containing LNAPL (Note if any, list the monitoring wells/points containing NAPL): Summary of DNAPL AR Form 6 Summary of LNAPL Additonal Notes Yes No DSCA ID No.: Submittal Date: Analytical Data Tables for North Carolina Dry-Cleaning Solvent Cleanup Act Program Prepared By: Facility Name:Frye & Webster Cleaners 608 Elwell Avenue, Greensboro, Guilford County, North Carolina 5438 Wade Park Boulevard, Suite 200, Raleigh, North Carolina AECOM Technical Services of North Carolina, Inc. July 2024 DC410064 Table 1: Site Chronology DSCA ID No.: DC410064 Chronology of Events 1/29/2024-2/1/2024 AECOM conducted a site investigation including the collection of eighteen soil samples (two each from boring locations SB-3 through SB-11); eleven soil gas samples (SG-1 through SG-11); installation and subsequent sampling of four groundwater monitoring wells (MW-1 through MW-4); a half-mile windshield receptor survey, and site GPS surveying. 3/15/2024 AECOM conducted an additional indoor air sample (IA-1) to assess air quality inside the dry cleaning facility. Instructions: Brief description of all significant events that have occurred since a problem was suspected at the facility. Commence with the first date a problem was suspected and continue through the most recent activity described in the current report. Date Page 1 of 1 Table 2: Analytical Data for Soil DSCA ID No.: DC410064 Be n z e n e ci s - 1 , 2 - D i c h l o r o e t h y l e n e Et h y l b e n z e n e Me t h y l t e r t - b u t y l e t h e r (M T B E ) Na p h t h a l e n e Te t r a c h l o r o e t h y l e n e To l u e n e tr a n s - 1 , 2 - D i c h l o r o e t h y l e n e Tr i c h l o r o e t h y l e n e Vin y l c h l o r i d e Xy l e n e s ( t o t a l ) Ch l o r o f o r m Me t h y l e n e C h l o r i d e 1, 2 , 4 - T r i m e t h y l b e n z e n e 1, 3 , 5 - T r i m e t h y l b e n z e n e Ac e n a p h t h y l e n e An t h r a c e n e Be n z o ( a ) a n t h r a c e n e Be n z o ( b ) f l u o r a n t h e n e Be n z o ( k ) f l u o r a n t h e n e Be n z o ( g , h , i ) p e r y l e n e Be n z o ( a ) p y r e n e Ch r y s e n e Dib e n z ( a , h ) a n t h r a c e n e Flu o r a n t h e n e In d e n o ( 1 , 2 , 3 - c d ) p y r e n e Na p h t h a l e n e ( 8 2 7 0 ) Ph e n a n t h r e n e Be n z y l b u t y l P h t h a l a t e Bi s ( 2 - et h y l h e x y l ) p h t h a l a t e Di- n - b u t y l P h t h a l a t e Py r e n e SB-1 5.5-6.5 9/16/21 ND ND ND ND ND ND 0.013 ND ND ND 0.012 ND NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SB-2 6-7 9/17/21 ND ND ND ND ND 0.021 ND ND ND ND ND ND NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA SB-3 0-1 0-1 1/31/24 <0.00176 0.0391 <0.00440 <0.00176 <0.0220 8.66 <0.00880 <0.00880 0.127 <0.00440 <0.0114 0.00606 0.0173 J <0.00880 <0.00880 <0.0449 <0.0449 <0.0449 <0.0449 <0.0449 <0.0449 <0.0449 <0.0449 <0.0449 <0.0449 <0.0449 <0.0449 <0.0449 <0.449 <0.449 <0.449 <0.0449 SB-3 1-2 1-2 1/31/24 <0.00159 0.00407 <0.00399 <0.00159 <0.0199 0.394 <0.00797 <0.00797 0.00432 <0.00399 <0.0104 0.00327 J 0.0172 J <0.00797 <0.00797 <0.0428 <0.0428 <0.0428 <0.0428 <0.0428 <0.0428 <0.0428 <0.0428 <0.0428 <0.0428 <0.0428 <0.0428 <0.0428 <0.428 <0.428 <0.428 <0.0428 SB-4 0-1 0-1 1/31/24 <0.00170 <0.00425 <0.00425 <0.00170 <0.0212 <0.00425 <0.00849 <0.00849 <0.00170 <0.00425 <0.0110 0.00328 J 0.0187 J <0.00849 <0.00849 <0.0446 <0.0446 <0.0446 <0.0446 <0.0446 <0.0446 <0.0446 <0.0446 <0.0446 <0.0446 <0.0446 <0.0446 <0.0446 <0.446 <0.446 <0.446 <0.0446 SB-4 2-3 2-3 1/31/24 <0.00171 <0.00427 <0.00427 <0.00171 <0.0213 <0.00427 <0.00854 <0.00854 <0.00171 <0.00427 <0.0111 0.00318 J 0.0151 J <0.00854 <0.00854 <0.0447 <0.0447 <0.0447 <0.0447 <0.0447 <0.0447 <0.0447 <0.0447 <0.0447 <0.0447 <0.0447 <0.0447 <0.0447 <0.447 <0.447 <0.447 <0.0447 SB-5 0-1 0-1 1/29/24 <0.00116 <0.00290 <0.00290 <0.00116 0.00687 J 0.380 0.00561 J <0.00581 <0.00116 <0.00290 0.011 0.00247 J 0.0107 J 0.00434 J <0.00581 <0.0358 0.00731 J 0.0284 J 0.0358 J 0.0110 J 0.0278 J 0.0306 J 0.0271 J <0.0358 0.0451 0.0195 J 0.0139 J 0.0388 0.0442 J <0.358 0.0150 J 0.0533 SB-5 4-5 4-5 1/29/24 <0.00163 <0.00407 <0.00407 <0.00163 <0.0203 0.0207 <0.00813 <0.00813 <0.00163 <0.00407 <0.0106 0.00351 J 0.0185 J <0.00813 <0.00813 <0.0434 <0.0434 <0.0434 <0.0434 <0.0434 <0.0434 <0.0434 <0.0434 <0.0434 <0.0434 <0.0434 <0.0434 <0.0434 <0.434 <0.434 <0.434 <0.0434 SB-6 0-1 0-1 1/30/24 <0.00134 <0.00334 <0.00334 <0.00134 <0.0167 0.00907 0.00175 J <0.00668 <0.00134 <0.00334 0.00130 J 0.0020 J 0.00989 J <0.00668 <0.00668 <0.0382 <0.0382 <0.0382 <0.0382 <0.0382 <0.0382 <0.0382 <0.0382 <0.0382 <0.0382 <0.0382 <0.0382 <0.0382 <0.382 <0.382 <0.382 <0.0382 SB-6 1-2 1-2 1/30/24 <0.00160 <0.00400 <0.00400 <0.00160 <0.0200 0.00448 <0.00801 <0.00801 <0.00160 <0.00400 <0.0104 0.00298 J 0.0125 J <0.00801 <0.00801 <0.0422 <0.0422 <0.0422 <0.0422 <0.0422 <0.0422 <0.0422 <0.0422 <0.0422 <0.0422 <0.0422 0.0261 J <0.422 <0.422 <0.422 <0.0422 <0.0422 SB-7 0-1 0-1 1/29/24 <0.00151 <0.00377 <0.00377 <0.00151 <0.0188 0.141 <0.00754 <0.00754 <0.00151 <0.00377 <0.00980 0.00356 J 0.0133 J <0.00754 <0.00754 <0.0409 <0.0409 <0.0409 <0.0409 <0.0409 <0.0409 <0.0409 <0.0409 <0.0409 <0.0409 <0.0409 <0.0409 <0.0409 <0.409 <0.409 <0.409 <0.0409 SB-7 3-4 3-4 1/29/24 <0.00184 <0.00461 <0.00461 <0.00184 <0.0230 <0.00461 <0.00921 <0.00921 <0.00184 <0.00461 <0.0120 0.00507 0.0194 J <0.00921 <0.00921 <0.0469 <0.0469 <0.0469 <0.0469 <0.0469 <0.0469 <0.0469 <0.0469 <0.0469 <0.0469 <0.0469 <0.0469 <0.0469 <0.469 <0.469 <0.469 <0.0469 SB-8 0-1 0-1 1/29/24 <0.00159 <0.00399 <0.00399 <0.00159 <0.0199 <0.00399 <0.00797 <0.00797 <0.00159 <0.00399 <0.0104 0.00255 J 0.0110 J <0.00797 <0.00797 <0.0419 <0.0419 <0.0419 <0.0419 <0.0419 <0.0419 <0.0419 <0.0419 <0.0419 <0.0419 <0.0419 <0.0419 <0.0419 <0.419 <0.419 <0.419 <0.0419 SB-8 1-2 1-2 1/29/24 <0.00148 <0.00370 <0.00370 <0.00148 <0.0185 0.00210 J <0.00739 <0.00739 <0.00148 <0.00370 <0.00961 0.00243 J 0.00982 J <0.00739 <0.00739 <0.0402 <0.0402 <0.0402 <0.0402 <0.0402 <0.0402 <0.0402 <0.0402 <0.0402 <0.0402 <0.0402 <0.0402 <0.0402 <0.402 <0.402 <0.402 <0.0402 SB-9 0-1 0-1 1/29/24 <0.00133 <0.00333 <0.00333 <0.00133 <0.0166 <0.00333 <0.00665 <0.00665 <0.00133 <0.00333 0.00306 J 0.00278 J 0.0128 J 0.00475 J <0.000665 0.0126 J <0.0383 0.0330 J 0.0757 0.0215 J 0.0433 0.0461 0.0404 0.0107 J 0.0943 0.045 <0.0383 0.0362 J <0.383 0.268 J <0.383 0.0756 SB-9 1-2 1-2 1/29/24 <0.00179 <0.00447 <0.00447 <0.00179 <0.0223 <0.00447 <0.00893 <0.00893 <0.00179 <0.00447 <0.0116 0.00355 J 0.0146 J <0.00893 <0.00893 <0.0448 <0.0448 <0.0448 <0.0448 <0.0448 <0.0448 <0.0448 <0.0448 <0.0448 <0.0448 <0.0448 <0.0448 <0.0448 <0.448 <0.448 <0.448 <0.0448 SB-10 0-1 0-1 1/29/24 <0.00139 <0.00348 <0.00348 <0.00139 <0.0174 0.115 <0.00695 <0.00695 <0.00139 <0.00348 <0.00904 0.00317 J 0.0163 J <0.00695 <0.00695 <0.0395 <0.0395 <0.0395 <0.0395 <0.0395 <0.0395 <0.0395 <0.0395 <0.0395 <0.0395 <0.0395 <0.0395 <0.0395 <0.395 <0.395 <0.395 <0.0395 SB-10 3-4 3-4 1/29/24 <0.00153 <0.00383 <0.00383 <0.00153 <0.0191 <0.00383 <0.00765 <0.00765 <0.00153 <0.00383 <0.00995 0.00320 J 0.0152 J <0.00765 <0.00765 <0.0417 <0.0417 <0.0417 <0.0417 <0.0417 <0.0417 <0.0417 <0.0417 <0.0417 <0.0417 <0.0417 <0.0417 <0.0417 <0.417 <0.417 <0.417 <0.0417 SB-11 0-1 0-1 1/29/24 <0.00138 <0.00344 <0.00344 <0.00138 <0.0172 <0.00344 <0.00688 <0.00688 <0.00138 <0.00344 <0.00894 0.00195 J 0.0133 J <0.00688 <0.00688 <0.0390 <0.0390 0.00698 J 0.0124 J <0.0390 0.00952 J 0.00866 J 0.00788 J <0.0390 0.0163 J <0.0390 <0.0390 <0.0390 <0.390 <0.390 <0.390 0.0156 J SB-11 1-2 1-2 1/29/24 <0.00188 <0.00469 <0.00469 <0.00188 <0.0235 <0.00469 <0.00939 <0.00939 <0.00188 <0.00469 <0.0122 0.00406 J 0.0166 J <0.00939 <0.00939 <0.0470 <0.0470 <0.0470 <0.0470 <0.0470 <0.0470 <0.0470 <0.0470 <0.0470 <0.0470 <0.0470 <0.0470 <0.0470 <0.470 <0.470 <0.470 <0.0470 Bold - compound detected Sa m p l e I D Sa m p l i n g D a t e ( m m / d d / y y ) De p t h [f e e t b g s ] [mg/kg][mg/kg] Page 1 of 1 Table 4: Analytical Data for Soil Gas DSCA ID No.: DC410064 Be n z e n e ci s - 1 , 2 - D i c h l o r o e t h y l e n e Eth y l b e n z e n e Me t h y l t e r t - b u t y l e t h e r (M T B E ) Na p h t h a l e n e Te t r a c h l o r o e t h y l e n e To l u e n e tr a n s - 1 , 2 - D i c h l o r o e t h y l e n e Tr i c h l o r o e t h y l e n e Vi n y l c h l o r i d e Xy l e n e s ( t o t a l ) Pro p y l e n e Ch l o r o f o r m 1, 1 , 2 , 2 - T e t r a c h l o r o e t h a n e Di c h l o r o d i f l u o r o m e t h a n e Ch l o r o m e t h a n e 1, 3 - B u t a d i e n e Tr i c h l o r o f l u o r o m e t h a n e Eth a n o l Ac r o l e i n Ac e t o n e Ca r b o n D i s u l f i d e Is o p r o p a n o l Me t h y l e n e C h l o r i d e He x a n e Me t h y l E t h y l K e t o n e ( 2 - Bu t a n o n e ) Eth y l A c e t a t e Te t r a h y d r o f u r a n Cy c l o h e x a n e 2, 2 , 4 - T r i m e t h y l p e n t a n e He p t a n e Me t h y l M e t h a c r y l a t e Me t h y l I s o b u t y l K e t o n e (M I B K ) 2- H e x a n o n e Sty r e n e 4- E t h y l t o l u e n e 1, 3 , 5 - T r i m e t h y l b e n z e n e 1, 2 , 4 - T r i m e t h y l b e n z e n e 1- O c t e n e n- O c t a n e Is o p r o p y l b e n z e n e (C u m e n e ) n- P r o p y l b e n z e n e 1, 1 - D i c h l o r o e t h e n e Ac e t o n i t r i l e 1, 1 , 1 - T r i c h l o r o e t h a n e 2- C h l o r o t o l u e n e ( o - Ch l o r o t o l u e n e ) SG-1 5 10 m 1/31/24 <484 23276 <649 <558 <795 2043185 <578 <609 64278 <385 <1318 262 1165 1336 <729 <308 <324 <893 <281 <340 <358 <468 <369 <536 <539 <459 <542 <449 686 <727 <625 <646 <641 <631 <629 <753 <751 <741 <682 <725 <752 <759 <601 <252 <830 <787 SG-2 5 17 m 1/31/24 1.50 <0.432 5.84 <0.399 1.76 871 15.5 <0.436 5.14 <0.275 31.63 21.6 1.84 <0.748 2.33 0.862 1.39 1.24 9.81 0.426 22.9 1.18 2.66 1.86 1.79 1.11 1.45 0.436 0.937 0.56 1.12 1.35 4.6 2.46 0.503 2.27 3.49 15.4 3.99 7.13 <0.538 1.11 <0.430 <0.180 <0.594 <0.563 SG-3 5 6 m 1/31/24 0.751 16.0 1.16 <0.367 <0.522 12277 7.29 1.25 109 <0.253 6.08 5.02 0.999 <0.686 2.37 <0.202 <0.213 1.10 1.50 <0.223 23.8 3.00 0.558 0.838 1.65 6.03 <0.356 1.46 1.71 <0.478 1.43 <0.424 5.67 16.0 <0.413 0.859 1.06 4.12 1.31 1.46 0.434 0.912 0.769 0.178 15.6 <0.517 SG-4 5 6 m 2/1/24 0.389 6.04 0.726 <0.389 <0.553 1236 3.40 <0.424 9.03 <0.268 4.94 31.3 0.570 1.72 2.25 0.201 0.610 1.11 1.33 4.5 8.88 9.66 0.510 0.490 3.23 1.12 <0.377 0.475 5.67 1.45 1.39 4.15 35.7 14.5 <0.438 0.478 0.966 2.71 9.32 2.93 0.904 <0.529 <0.418 <0.175 <0.578 <0.548 SG-5 5 14 m 1/29/24 1.21 14.4 4.50 <0.343 0.850 3117 15.7 2.01 131 <0.236 24.83 7.22 5.25 0.775 2.44 0.77 0.718 1.32 6.59 0.803 84.9 1.55 4.77 0.665 2.5 18.7 4.13 7.17 1.46 3.28 1.78 0.387 30.7 98.7 0.444 3.67 3.91 15.1 1.74 3.28 1.23 2.59 <0.369 <0.155 <0.510 0.56 SG-6 5 7 m 2/1/24 <0.321 <0.400 <0.431 <0.371 <0.528 133 1.96 <0.404 <0.543 <0.255 <0.875 1.57 0.822 <0.694 2.32 0.405 <0.215 1.38 1.63 <0.226 17.5 1.18 1.04 0.363 0.833 0.687 <0.360 0.617 0.326 <0.483 <0.415 <0.429 0.398 0.396 <0.417 <0.500 <0.498 <0.492 <0.453 <0.481 <0.499 <0.504 <0.399 <0.167 <0.551 <0.522 SG-9 5 5 m 1/31/24 7.02 0.44 1.89 <0.332 <0.472 47.6 14.7 <0.362 0.525 <0.229 7 99.9 0.929 <0.621 2.24 0.27 11.7 1.17 4.28 <0.202 20.5 55.6 2.35 2 14.4 3.79 1.02 0.243 J 6.32 3.77 8.31 <0.384 0.917 0.577 0.577 0.417 J 0.657 1.82 5.49 4.96 0.587 0.483 <0.357 0.302 <0.493 <0.467 SG-10 5 8 m 1/31/24 4.08 1.20 13.6 0.806 1.13 236 14.6 <0.848 2.63 <0.535 90.5 64.5 1.99 1.70 2.31 0.727 5.28 1.29 4.54 0.682 31.0 46.3 2.14 0.849 4.32 2.04 1.28 <0.626 2.20 1.02 2.36 <0.899 14.5 8.29 1.56 3.55 5.39 21.7 28.1 94.6 1.39 2.16 <0.836 <0.351 <1.16 <1.10 SG-11 5 18 m 1/31/24 138 157117 2178 <60.9 <86.7 1729266 <63.0 439 233007 1072 317 223 650 6154 <79.5 <33.6 <35.4 <97.4 37.5 <37.1 4878 70.1 <40.3 119 15840 <50.1 <59.1 <49.0 18395 994 8701 35691 1231 19398 <68.6 3154 2001 9101 10460 7821 2672 5719 1939 <27.5 <90.5 <85.8 Bold - compound detected 1 Indicate "G" for grab sample or for longer samples indicate the number of hours followed by "h". Sa m p l e I D Sa m p l i n g D a t e ( m m / d d / y y ) De p t h [fe e t b g s ] [µg/m3][µg/m3]Sa m p l e D u r a t i o n 1 ADT 4(1) Page 1 of 1 Table 5: Analytical Data for Indoor and Outdoor Air DSCA ID No.: DC410064 Be n z e n e ci s - 1 , 2 - D i c h l o r o e t h y l e n e Et h y l b e n z e n e Me t h y l t e r t - b u t y l e t h e r (M T B E ) Na p h t h a l e n e Te t r a c h l o r o e t h y l e n e To l u e n e tr a n s - 1 , 2 - D i c h l o r o e t h y l e n e Tr i c h l o r o e t h y l e n e Vi n y l c h l o r i d e Xy l e n e s ( t o t a l ) Ch l o r o f o r m 1, 2 , 4 - T r i m e t h y l b e n z e n e IA-1 03/15/24 F SU 8h 1.19 <0.190 0.394 <0.176 <0.250 1.84 NA <0.192 <0.257 <0.121 1.821 0.385 0.500 Notes: 1 Indicate "F" for former or current dry-cleaning facility, "AD" for adjacent space, "R" for residence, "C" for commercial not adjacent space. If sample was taken outdoors, leave blank. 2 Indicate "SU" for summa canister, "FC" for flux chambers, "T" for tedlar bags, "P" for passive samplers, "O" for other. 3 Indicate "8h" for 8-hour, "24h" for 24-hour, "G" for grab sample, for other hours indicate the number of hours followed by "h" or "d" for days. Sa m p l e I D Sa m p l i n g D a t e ( m m / d d / y y ) [µg/m3]Sa m p l e L o c a t i o n 1 Sa m p l i n g D u r a t i o n 3 Sa m p l i n g M e t h o d 2 ADT 5 Page 1 of 1 Table 5(2): Additional Data for Indoor and Outdoor Air DSCA ID No.: DC410064 Attachment: Sampling location map that indicates where all indoor air samples were collected. The map should clearly indicate the names/types of businesses and residence names sampled and in the vicinity of the subject site that may be of concern. Is dry-cleaning facility at the site: Operating Pick-up Only Abandoned If facility is operating, solvents used are: Perc Petroleum Green Earth Other For the active or former dry-cleaning space, describe the type and location of the air handling/HVAC unit (for example - a shared unit supplying two adjacent spaces; unit located on the roof): Fan in back of facility and two roof vent fans; HVAC does not appear to be in use at site For any other indoor spaces tested, describe the type and location of the air handling/HVAC unit (for example - a shared unit supplying two adjacent spaces; unit located on the roof): NA For any indoor air spaces tested, describe the current use of the space (for example - an ABC liquor store adjacent to the dry-cleaner, a residence approximately 200 feet from the dry-cleaner, etc.): Current dry cleaning facility using water-based methods, as well as general laundry (washing machines/dryers, etc.). Water-based Mielle Page 1 of 1 Table 5(3): Additional Data for Indoor and Outdoor Air DSCA ID No.: DC410064 Sample ID Name and Address for Sampling Location Property Owner Name, Address, and Phone Number Tenant Name, Address, and Phones Number IA-1 Frye & Webster Cleaners, 608 Elwell Ave Fanuel Adnew, 608 Elwell Ave, 336-327-9030 James Woo, 608 Elwell Ave, 336-379-1732 Page 1 of 1 Table 6: Monitoring Well Construction Data DSCA ID No.: DC410064 Well ID Date Installed (mm/dd/yy)Number of Samples Well Depth [feet] Well Diameter [inch] Screen Interval [feet] Status (Active/Inactive) MW-1 1/30/24 1 20 2 5-20 Active MW-2 1/30/24 1 20 2 5-20 Active MW-3 1/30/24 1 20 2 5-20 Active MW-4 1/30/24 1 20 2 5-20 Active Page 1 of 1 Table 7: Groundwater Elevation Data DSCA ID No.: DC410064 Groundwater Sampling Point Sampling Date (mm/dd/yy) TOC Elevation [feet] Depth to Water [feet bgs] Groundwater Elevation [feet] Depth to NAPL [feet bgs] NAPL Thickness [feet] Corrected* Groundwater Elevation [feet] MW-1 2/9/2024 816.48 10.99 805.49 NA NA NA MW-2 2/9/2024 817.606 11.20 806.41 NA NA NA MW-3 2/9/2024 820.119 13.42 806.70 NA NA NA MW-4 2/9/2024 820.036 14.35 805.69 NA NA NA ADT 7 Page 1 of 1 Analytical Data for Groundwater DSCA ID No.: DC410064 Be n z e n e ci s - 1 , 2 - D i c h l o r o e t h y l e n e Et h y l b e n z e n e Me t h y l t e r t - b u t y l e t h e r (M T B E ) Na p h t h a l e n e Te t r a c h l o r o e t h y l e n e To l u e n e tr a n s - 1 , 2 - D i c h l o r o e t h y l e n e Tr i c h l o r o e t h y l e n e Vi n y l c h l o r i d e Xy l e n e s ( t o t a l ) se c - B u t y l b e n z e n e te r t - B u t y l b e n z e n e 1, 2 - D i c h l o r o e t h a n e Di i s o p r o p y l E t h e r Is o p r o p y l b e n z e n e (C u m e n e ) p- I s o p r o p y l t o l u e n e n- P r o p y l b e n z e n e Ac e t o n e MW-1 2/9/24 0.561 <0.000126 <0.000137 0.0114 0.0147 0.0016 0.000382 J <0.000149 0.000214 J <0.000234 <0.000174 0.000867 J 0.000464 J 0.00322 0.0104 0.00921 0.000248 J 0.000720 J <0.0113 MW-2 2/9/24 5.700 0.00361 J 0.170 4.620 0.0266 <0.00150 0.0551 <0.000745 0.00435 J <0.00117 0.129 0.00276 J 0.000665 J 0.0735 0.301 0.0268 0.00341 J 0.0368 0.0679 J MW-3 2/9/24 0.00230 <0.000126 <0.000137 <0.000101 <0.0010 <0.00030 <0.000278 <0.000149 <0.000190 <0.000234 <0.000174 <0.000125 <0.000127 <0.0000819 <0.000105 <0.000105 <0.000120 <0.000993 0.0333 J MW-4 2/9/24 0.0171 0.351 0.000929 J 0.00137 <0.0010 0.0633 0.000413 J 0.0156 0.0526 0.00115 0.000963 J 0.000410 J 0.000219 J <0.0000819 0.000244 J 0.000431 J 0.000316 J 0.000362 J 0.0170 J Bold - compound detected Table 8: Gr o u n d w a t e r S a m p l i n g P o i n t Sa m p l i n g D a t e ( m m / d d / y y ) [mg/L] Page 1 of 3 DSCA ID No.: DC410064 MW-1 2/9/24 MW-2 2/9/24 MW-3 2/9/24 MW-4 2/9/24 Bold - compound detected Table 8: Gr o u n d w a t e r S a m p l i n g P o i n t Sa m p l i n g D a t e ( m m / d d / y y ) Analytical Data for Groundwater n- B u t y l b e n z e n e Ch l o r o b e n z e n e Ch l o r o f o r m 1, 4 - D i c h l o r o b e n z e n e 1, 2 - D i c h l o r o p r o p a n e 2- B u t a n o n e ( M E K ) Me t h y l e n e C h l o r i d e St y r e n e 1, 1 , 2 - T r i c h l o r o e t h a n e 1, 2 , 4 - T r i m e t h y l b e n z e n e 1, 2 , 3 - T r i m e t h y l b e n z e n e 1, 3 , 5 - T r i m e t h y l b e n z e n e 1, 1 - D i c h l o r o e t h e n e Ac e n a p h t h e n e Be n z i d i n e Fl u o r e n e Ph e n a n t h r e n e Di e t h y l P h t h a l a t e <0.000157 <0.000116 <0.000111 <0.000120 <0.000149 <0.00119 <0.000430 <0.000118 <0.000158 <0.000322 <0.000104 <0.000104 <0.000188 <0.0000939 0.00396 J 0.000136 J 0.000268 J 0.000435 J 0.00340 J 0.0106 0.0195 J 0.00149 J 0.00492 J 0.00870 J 0.00232 J 0.00387 J 0.00144 J 0.0983 0.00596 0.0212 <0.000940 0.000937 J <0.00374 0.000177 J 0.000155 J 0.000313 J <0.000157 <0.000116 <0.000111 <0.000120 <0.000149 <0.00119 <0.000430 <0.000118 <0.000158 <0.000322 <0.000104 <0.000104 <0.000188 <0.0000886 <0.00374 <0.000844 <0.000112 <0.000287 <0.000157 <0.000116 <0.000111 <0.000120 <0.000149 0.00268 J <0.000430 <0.000118 <0.000158 0.00292 0.00121 0.000812 J 000270 J 0.0000940 J <0.00393 0.000146 J <0.000118 <0.000301 [mg/L] Page 2 of 3 DSCA ID No.: DC410064 MW-1 2/9/24 MW-2 2/9/24 MW-3 2/9/24 MW-4 2/9/24 Bold - compound detected Table 8: Gr o u n d w a t e r S a m p l i n g P o i n t Sa m p l i n g D a t e ( m m / d d / y y ) Analytical Data for Groundwater Be n z o ( a ) a n t h r a c e n e Be n z o ( b ) f l u o r a n t h e n e Be n z o ( k ) f l u o r a n t h e n e Be n z o ( g , h , i ) p e r y l e n e Be n z o ( a ) p y r e n e Ch r y s e n e Di b e n z ( a , h ) a n t h r a c e n e Fl u o r a n t h e n e 2, 4 - D i m e t h y l p h e n o l Ph e n o l <0.000211 <0.000138 <0.000127 <0.000128 <0.0000404 <0.000138 <0.0000683 <0.000108 <0.000674 <0.00459 0.000214 J 0.000191 J 0.000265 J 0.000254 J 0.000120 J 0.000217 J 0.000303 J 0.000105 J 0.00109 J 0.0117 <0.000199 <0.000130 <0.000120 <0.000121 <0.0000381 <0.000130 <0.0000644 <0.000102 <0.000636 <0.00433 <0.000209 <0.000136 <0.000126 <0.000127 0.0000471 J <0.000136 0.0000819 J <0.000107 <0.0000668 <0.00455 [mg/L] Page 3 of 3 Table 10: Water Well(s) Survey Data DSCA ID No.: DC410064 Ref. No./ Well ID Sampling Location Name and Address Property Owner Name, Address, and Phone Number Tenant Name, Address, and Phone Number Distance from Source [feet] Well Depth [feet] Screen Interval [feet] Use of Well Source of Well Identification Direction (downgradient, upgradient, etc., to source area) Status (Active/ Inactive) 42 3217 E Bessemer Ave, Greensboro, NC 27405 T & T AUTOMOTIVE LLC 3114 PENINSULA DR, Jamestown, NC, 27282 T & T Automotive Repair 3217 E Bessemer Ave, Greensboro, NC 27405 (336) 285-5512 185 Unknown Unknown Irrigation Jan 2024 Public Outreach Mailing Upgradient Unknown ADT 10 Page 1 of 1 Table 12: Analytical Data for Natural Attenuation Parameters DSCA ID No.: DC410064 Sa m p l i n g D a t e ( m m / d d / y y ) Di s s o l v e d o x y g e n ( D O ) Ni t r a t e Su l f a t e Ma j o r C a t i o n s Me t h a n e Fe r r o u s I r o n Ox i d a t i o n r e d u c t i o n po t e n t i a l ( O R P ) Al k a l i n i t y Ch l o r i d e ( o p t i o n a l ) Co n d u c t i v i t y pH Te m p e r a t u r e To t a l o r g a n i c c a r b o n (T O C ) Et h a n e Et h e n e Units mg/L mg/L mg/L mg/L mg/L mg/L mV mg/L mg/L μs/cm2 std unit ° C mg/L mg/L mg/L MW-1 2/9/2024 0.64 NA NA NA NA NA 81.8 NA NA 216 6.16 18.7 NA NA NA MW-2 2/9/2024 3.7 NA NA NA NA NA 124.9 NA NA 113 5.05 19.3 NA NA NA MW-3 2/9/2024 3.19 NA NA NA NA NA 127 NA NA 64 5.12 17.2 NA NA NA MW-4 2/9/2024 6.84 NA NA NA NA NA 133.3 NA NA 145 5.37 17.2 NA NA NA Sa m p l e I D ADT 12 Page 1 of 1 Figures Site Copyright:© 2013 National Geographic Society, i-cubed 0 ³ SHEET: DRAWN BY: CHECKED BY: PROJECT NO: LB - 06/29/2023 SDH - 06/29/2023 60722767 Figure 1 Site Location MapFrye & Webster608 Elwell AvenueGreensboro, NCDSCA Site DC410064 AECOM TECHNICAL SERVICES OF NORTH CAROLINA, INC.6000 FAIRVIEW ROAD, SUITE 200CHARLOTTE, NC 28210TEL: (704) 552-0330 APPROX. SCALE, ft. 0 30 SHEET: Frye & Webster Cleaners LEGEND Approximate Location of PCE Dry-Cleaning Machine (1995-2015) Approximate Location of Varsol / Petroleum Machine (1955-1995) Property Line (Guilford Co. GIS) Site Property Boundary Site Building (606 & 608 Elwell Ave) Figure 2 Source: Esri, Maxar, GeoEye, Earthstar Geographics, CNES/Airbus DS, USDA,USGS, AeroGRID, IGN, and the GIS User Community 0 ³ SHEET: DRAWN BY: CHECKED BY: PROJECT NO: EMM - 04/24/2024 SDH - 04/30/2024 60722767 Figure 3 Surrounding Land Use MapFrye & Webster608 Elwell AvenueGreensboro, NCDSCA Site DC410064 AECOM TECHNICAL SERVICES OF NORTH CAROLINA, INC.6000 FAIRVIEW ROAD, SUITE 200CHARLOTTE, NC 28210TEL: (704) 552-0330 Site BoundaryZONINGC-M-COMMERCIAL MEDIUMC-M-COMMERCIAL MEDIUM,RM-18-Residential, Multi-Family, 18 units per acreCD-LI-LIGHT INDUSTRIALLI-Light IndustrialPI-Public and InstitutionalR-5-RESIDENTIAL SINGLE FAMILY 5RM-18-Residential, Multi-Family, 18 units per acre APPROX. SCALE, ft. 0 30 SHEET: Frye & Webster Cleaners Figure 4 LEGEND milligrams per kilogrammg/kg PCE - Tetrachloroethylene TCE - Trichloroethylene DCE - Dichloroethylene TMB - Trimethylbenzene Soil and Groundwater Sample Location - Pyramid Environmental & Engineering P.C. (Pyramid), September 16 & 17, 2021 micrograms per literµg/L Approximate Location of PCE Dry-Cleaning Machine (1995-2015) Approximate Location of Varsol / Petroleum Machine (1955-1995) Soil Sample Location Property Line (Guilford Co. GIS) Site Property Boundary Site Building (606 & 608 Elwell Ave) Blank contamination was reported by the laboratory for chloroform and methylene chloride Estimated ValueJ BJ Inferred Area of PCE Impacts in Soil > NCDEQ Preliminary Soil Remediation Goals (PSRG) SB-8 (0-1’) (01/29/2024) Chloroform - 0.00255 BJ mg/kg Methylene Chloride - 0.0110 BJ mg/kg SB-8 (1-2’) (01/29/2024) PCE - 0.00210 J mg/kg Chloroform - 0.00243 BJ mg/kg Methylene Chloride - 0.00982 J mg/kg SB-7 (0-1’) (01/29/2024) PCE - 0.141 mg/kg Chloroform - 0.00356 BJ mg/kg Methylene Chloride - 0.0133 BJ mg/kg SB-7 (3-4’) (01/29/2024) Chloroform - 0.00507 mg/kg Methylene Chloride - 0.0194 BJ mg/kg SB-9 (0-1’) (01/29/2024) Chloroform - 0.00278 BJ mg/kg Methylene Chloride - 0.0128 BJ mg/kg 1,2,4-TMB 0.00475 J mg/kg Xylenes - 0.00306 J mg/kg SB-9 (1-2’) (01/29/2024) Chloroform - 0.00355 BJ mg/kg Methylene Chloride - 0.0146 BJ mg/kg SB-11 (0-1’) (01/30/2024) Chloroform - 0.00195 BJ mg/kg Methylene Chloride - 0.0133 BJ mg/kg SB-11 (1-2’) (01/30/2024) Chloroform - 0.00406 BJ mg/kg Methylene Chloride - 0.0166 BJ mg/kg SB-6 (0-1’) (01/30/2024) PCE - 0.00907 mg/kg Chloroform - 0.00200 BJ mg/kg Methylene Chloride - 0.00989 BJ mg/kg Toluene - 0.00175 J mg/kg Xylenes - 0.00130 mg/kg SB-6 (1-2’) (01/30/2024) PCE - 0.00448 mg/kg Chloroform - 0.00298 mg/kg Methylene Chloride - 0.0125 BJ mg/kg SB-4 (0-1’) (01/31/2024) Chloroform - 0.00328 BJ mg/kg Methylene Chloride - 0.0187 BJ mg/kg SB-4 (2-3’) (01/31/2024) Chloroform - 0.00318 BJ mg/kg Methylene Chloride - 0.0151 BJ mg/kg SB-3 (0-1’) (01/31/2024) PCE - 8.66 mg/kg TCE - 0.127 mg/kg cis-1,2-DCE - 0.0391 mg/kg Chloroform - 0.00606 mg/kg Methylene Chloride - 0.0173 BJ mg/kg SB-3 (1-2’) (01/31/2024) PCE - 0.394 mg/kg TCE - 0.00432 mg/kg cis-1,2-DCE - 0.00407 mg/kg Chloroform - 0.00327 BJ mg/kg Methylene Chloride - 0.0172 BJ mg/kg SB-5 (0-1’) (01/29/2024) PCE - 0.380 mg/kg Chloroform - 0.00247 BJ mg/kg Methylene Chloride - 0.0107 BJ mg/kg Naphthalene - 0.00687 J mg/kg Toluene - 0.00561 J mg/kg 1,2,4-TMB - 0.00434 J mg/kg 1,2,3-TMB - 0.00290 J mg/kg Xylenes - 0.0110 mg/kg SB-5 (4-5’) (01/29/2024) PCE - 0.0207 mg/kg Chloroform - 0.00351 BJ mg/kg Methylene Chloride - 0.0185 BJ mg/kg SB-10 (0-1’) (01/29/2024) PCE - 0.115 mg/kg Chloroform - 0.00317 BJ mg/kg Methylene Chloride - 0.0163 BJ mg/kg SB-10 (3-4’) (01/29/2024) Chloroform - 0.00320 BJ mg/kg Methylene Chloride - 0.0152 BJ mg/kg APPROX. SCALE, ft. 0 30 SHEET: Frye & Webster Cleaners 806.0 ft 806.5 ft 805.5 ft Figure 5 LEGEND milligrams per kilogrammg/kg PCE - Tetrachloroethylene TCE - Trichloroethylene DCE - Dichloroethylene MTBE - Methyl tert-butyl ether TMB - Trimethylbenzene Soil and Groundwater Sample Location - Pyramid Environmental & Engineering P.C. (Pyramid), September 16 & 17, 2021 micrograms per literµg/L Approximate Location of former PCE Dry-Clean- ing Machine (1995-2015) Approximate Location of former Varsol / Petro- leum Machine (1955-1995) Analytical results do not exceed calculated vapor intrusion risk for residential or non-residential exposure – DSCA Groundwater to Indoor Air Risk Calculator. Analytical results exceed calculated vapor intrusion risk for residential and non-residential exposure – DSCA Groundwater to Indoor Air Risk Calculator. Monitoring Well Location Property Line (Guilford Co. GIS) Site Property Boundary Site Building (606 & 608 Elwell Ave) Area of PCE 2L Standard Exceedance Red highlighted text indicates concentrations above 2L Standards. Potentiometric Surface Contour (ft) Inferred Groundwater Flow Direction MW-1 (5-20’) (02/09/2024) PCE - 1.60 µg/l TCE - 0.214 J µg/l 1,2-Dichloroethane - 3.22 µg/l Benzene - 561 µg/l Toluene - 0.382 J µg/l MTBE - 11.4 µg/l Naphthalene - 14.7 µg/l sec-Butylbenzene - 0.867 J µg/l tert-Butylbenzene - 0.464 J µg/l Di-isopropyl ether - 10.4 µg/l Isopropylbenzene - 9.21 µg/l p-Isopropyltoluene - 0.248 J µg/l n-Propylbenzene - 0.720 J µg/l MW-3 (5-20’) (02/09/2024) Benzene - 2.30 µg/l Acetone - 33.3 J µg/l MW-2 (5-20’) (02/09/2024) TCE - 4.35 J µg/l cis-1,2-DCE - 3.61 J µg/l 1,2-Dichloroethane - 73.5 µg/l 1,1,2-Trichloroethane - 1.44 J µg/l Benzene - 5,700 µg/l Toluene - 55.1 µg/l Ethylbenzene - 170 µg/l Xylenes - 129 µg/l MTBE - 4,620 µg/l Naphthalene - 26.6 µg/l Acetone - 67.9 J µg/l n-Butylbenzene - 3.40 J µg/l sec-Butylbenzene - 2.76 J µg/l tert-Butylbenzene - 0.665 J µg/l Chlorobenzene - 10.6 µg/l Chloroform - 19.5 J µg/l 1,4-Dichlorobenzene - 1.49 J µg/l 1,2-Dichloropropane - 4.92 J µg/l Di-isopropyl ether - 301 µg/l Isopropylbenzene - 26.8 µg/l p-Isopropyltoluene - 3.41 J µg/l 2-Butanone - 8.70 J µg/l Methylene Chloride - 2.32 J µg/l n-Propylbenzene - 36.8 µg/l Styrene - 3.87 J µg/l 1,2,4-TMB - 98.3 µg/l 1,2,3-TMB - 5.96 µg/l 1,3,5-TMB - 21.2 µg/l MW-4 (5-20’) (02/09/2024) PCE - 63.3 µg/l TCE - 52.6 µg/l cis-1,2-DCE - 351 µg/l trans-1,2-DCE - 15.6 µg/l Vinyl chloride - 1.15 µg/l 1,1-DCE - 0.270 J µg/l Benzene - 17.1 µg/l Toluene - 0.413 J µg/l Ethylbenzene - 0.929 J µg/l Xylenes - 0.963 J µg/l MTBE - 1.37 µg/l Acetone - 17.0 J µg/l sec-Butylbenzene - 0.410 J µg/l tert-Butylbenzene - 0.219 J µg/l Di-isopropyl ether - 0.244 J µg/l Isopropylbenzene - 0.431 J µg/l p-Isopropyltoluene - 0.316 J µg/l 2-Butanone - 2.68 J µg/l n-Propylbenzene - 0.362 µg/l 1,2,4-TMB - 2.92 µg/l 1,2,3-TMB - 1.21 µg/l 1,3,5-TMB - 0.812 J µg/l 610 Elwell Ave 606 Elwell Ave 608 Elwell Ave Higgin’s Curb Market Active UST Facility ID: 00-0-0000009969 APPROX. SCALE, ft. 0 30 SHEET: Frye & Webster Cleaners 805.49 806.41 806.70 805.69 806.0 ft 806.5 ft 805.5 ft LEGEND Monitoring Well Location, Identification and Relative Groundwater Elevation (ft) Potentiometric Surface Contour (ft/msl) MW-187.47 Deep Monitoring Well Location, Identification and Relative Groundwater Elevation (ft) - not used in contouringDMW-1(85.20) Inferred Groundwater Flow Direction Figure 6 Approximate Location of former PCE Dry-Clean- ing Machine (1995-2015) Approximate Location of former Varsol / Petro- leum Machine (1955-1995) MW-1 MW-2 MW-3 MW-4 MW-5 APPROX. SCALE, ft. 0 30 SHEET: Frye & Webster Cleaners 606 Elwell Ave (Vacant) 610 Elwell Ave LEGEND milligrams per kilogrammg/kg Note: Compounds summarized on this map were selected based on those detected in soil samples at concentrations greater than the NCDEQ Preliminary Soil Remediation Goals, and in groundwater at concentrations which represent a hazard quotient ≥ 0.1 or carcinogenic risk ≥ 1E-06 when entered in the DSCA Groundwater to Indoor Air Risk Calculator, in accordance with DSCA Contractor Bulletin # 32 - Determination of COCs for VI Investigations, dated June 25, 2018. Comprehensive results are included in DSCA Analytical Data Table 4 and in the DSCA Soil Gas to Indoor Air Risk Calculators. Property Line (Guilford Co. GIS) micrograms per literµg/L Approximate Location of PCE Dry-Cleaning Machine (1995-2015) Approximate Location of Varsol / Petroleum Machine (1955-1995) Analytical results do not exceed calculated vapor intrusion risk for residential or non-residential exposure – DSCA Indoor Air/Soil Gas to Indoor Air Risk Calculator. Analytical results exceed calculated vapor intrusion risk for residential and non-residential exposure – DSCA Soil Gas to Indoor Air Risk Calculator. Analytical results do not exceed calculated vapor intrusion risk for non-residential exposure but do exceed for residential exposure – DSCA Soil Gas to Indoor Air Risk Calculator. Soil Gas Sample Location Indoor Air Sample Location Site Property Boundary Site Building (606 & 608 Elwell Ave) PCE - Tetrachloroethylene TCE - Trichloroethylene DCE - Dichloroethylene TMB - Trimethylbenzene MTBE - Methyl tert-butyl ether Figure 7 SG-5 (01/29/2024) PCE - 3,117 µg/mk TCE - 131 µg/mk cis-1,2-DCE - 14.4 µg/mk trans-1,2-DCE - 2.01 µg/mk Chloroform - 5.25 µg/mk 1,1,2-Trichloroethane - 0.553 µg/mk Benzene - 1.21 µg/mk Toluene - 15.7 µg/mk Ethylbenzene - 4.50 µg/mk m-/p-Xylenes - 18.1 µg/mk o-Xylene - 6.73 µg/mk Naphthalene - 0.850 µg/mk 1,2,4-TMB - 15.1 µg/mk 1,3,5-TMB - 3.91 µg/mk SG-3 (01/29/2024) PCE - 12,277 µg/mk TCE - 109 µg/mk cis-1,2-DCE - 16.0 µg/mk trans-1,2-DCE - 2.01 µg/mk Chloroform - 0.999 µg/mk Benzene - 0.751 µg/mk Toluene - 7.29 µg/mk Ethylbenzene - 1.16 µg/mk m-/p-Xylenes - 4.40 µg/mk o-Xylene - 1.68 µg/mk Naphthalene - 0.850 µg/mk 1,2,4-TMB - 4.12 µg/mk 1,3,5-TMB - 1.06 µg/mk SG-2 (01/31/2024) PCE - 871 µg/mk TCE - 5.14 µg/mk Chloroform - 1.84 µg/mk Benzene - 1.50 µg/mk Toluene - 15.5 µg/mk Ethylbenzene - 5.84 µg/mk m-/p-Xylenes - 24.0 µg/mk o-Xylene - 7.63 µg/mk Naphthalene - 1.76 µg/mk 1,2,4-TMB - 15.4 µg/mk 1,3,5-TMB - 3.49 µg/mk SG-1 (01/31/2024) PCE - 2,043,185 µg/mk TCE - 64,278 µg/mk cis-1,2-DCE - 23,276 µg/mk Chloroform - 1,165 µg/mk 1,1,2,2-Tetrachloroethane - 1,336 µg/mk SG-10 (01/31/2024) PCE - 236 µg/mk TCE - 2.63 µg/mk cis-1,2-DCE - 1.20 µg/mk Chloroform - 1.99 µg/mk Benzene - 4.08 µg/mk Toluene - 14.6 µg/mk Ethylbenzene - 13.6 µg/mk m-/p-Xylenes - 53.6 µg/mk o-Xylene - 53.6 µg/mk MTBE - 0.806 µg/mk Naphthalene - 1.13 µg/mk 1,2,4-TMB - 21.7 µg/mk 1,3,5-TMB - 5.39 µg/mk SG-11 (01/31/2024) PCE - 1,729,266 µg/mk TCE - 233,007 µg/mk cis-1,2-DCE - 157,117 µg/mk trans-1,2-DCE - 439 µg/mk Vinyl chloride - 1,072 µg/mk Benzene - 138 µg/mk Ethylbenzene - 2,178 µg/mk m-/p-Xylenes - 317 µg/mk Chloroform - 650 µg/mk 1,1,2,2-Tetrachloroethane - 6,154 µg/mk 1,2-Dichloropropane - 1,476 µg/mk 1,1-Dichloroethene - 1,939 µg/mk 1,2,4-TMB - 9,101 µg/mk 1,3,5-TMB - 2,001 µg/mk SG-6 (02/01/2024) PCE - 133 µg/mk Chloroform - 0.822 µg/mk Toluene - 1.96 µg/mk 1,1,2,2-Tetrachloroethane - 6,154 µg/mk 1,2-Dichloropropane - 1,476 µg/mk 1,1-Dichloroethene - 1,939 µg/mk SG-4 (02/01/2024) PCE - 1,236 µg/mk TCE - 9.03 µg/mk cis-1,2-DCE - 6.04 µg/mk trans-1,2-DCE - 2.01 µg/mk 1,2-Dichloroethane - 0.445 µg/mk 1,1,2-Trichloroethane - 4.99 µg/mk Chloroform - 0.570 µg/mk Benzene - 0.389 µg/mk Toluene - 3.40 µg/mk Ethylbenzene - 0.726 µg/mk m-/p-Xylenes - 3.45 µg/mk o-Xylene - 1.49 µg/mk 1,2,4-TMB - 2.71 µg/mk 1,3,5-TMB - 0.966 µg/mk SG-9 (01/31/2024) PCE - 47.6 µg/mk TCE - 0.525 µg/mk cis-1,2-DCE - 0.440 µg/mk Benzene - 7.02 µg/mk Ethylbenzene - 1.89 µg/mk m-/p-Xylenes - 5.10 µg/mk Chloroform - 0.929 µg/mk IA-1 (03/15/2024) PCE - 1.84 µg/mk Benzene - 1.19 µg/mk Ethylbenzene - 0.394 µg/mk m-/p-Xylenes - 1.19 µg/mk o-Xylenes - 0.631 µg/mk Chloroform - 0.385 µg/mk 1,2,4-TMB - 0.500 µg/mk 0.5 mile 500 feet APPROX. SCALE, ft. 0 SHEET: 100 Figure 8 LEGEND Buffer Radius Site Boundary Wetlands Area Allred & Allred Day Care WD Mohammed Islamic Center Otis L. Hairston Middle School Kidzplay Childcare Inc. Bessemer Elementary School Word of Truth Fellowship Churches Schools and Daycares Water Supply Wells - reported Appendix A AECOM Standard Operating Procedures Soil Sampling Using Direct Push Technology () Revision 1 June 7, 2017 PRINTED COPIES ARE UNCONTROLLED. CONTROLLED COPY IS AVAILABLE ON COMPANY INTRANET. 1/2 AECOM – North Carolina Standard Operating Procedures Soil Sampling Using a Hand Auger 1. Purpose and Scope Standard operating procedure for the collection of soil samples using a stainless steel hand auger. 2. Procedure 2.1 Required Equipment Stainless Steel Hand Auger with extensions Gloves (Leather, Latex and/or Nitrile) Sample Containers Field Logbook Sample Labels Chain-of-Custody Cooler with Ice GPS Unit Tape Measure Bentonite Chips/Portland Cement Organic Vapor Analyzer 2.2 Procedure 1. Verify sample collection location, sample identification, and required analyses. 2. Record GPS coordinates as applicable. 3. Assemble clean hand auger and inspect for damage. 4. Don new, uncontaminated gloves. 5. Advance the hand auger into the soil by turning the auger clockwise until the auger bucket is full. 6. Remove the soil from the auger bucket. Use a tape measure to periodically gauge depth of soil boring. 7. Retrieve a sample at interval specified in the scope of work, for screening with an organic vapor analysis (OVA) meter, such as a photo ionization detector (PID). 8. Samples collected from each boring will be submitted to laboratory for analysis based on the parameters and goals specific to each work plan. 9. Repeat steps 4 to 7 until the boring termination conditions are met. 10. Backfill soil borings terminated above the water table with native cuttings or bentonite chips. Backfill soil borings that breach the water table using bentonite. 11. Complete all required documentation, including field logbook entries, soil description, sample container label, and chain-of-custody form. 12. GPS, flag, stake, or otherwise mark the sample collection locations as necessary. AECOM Soil Sampling Using Direct Push Technology () Revision 1 June 7, 2017 PRINTED COPIES ARE UNCONTROLLED. CONTROLLED COPY IS AVAILABLE ON COMPANY INTRANET. 2/2 3. Records a. Field Notes b. Equipment Calibration Groundwater Sampling Using Low-Flow, Minimal-Drawdown Methods (V2)Revision July 2, 2024 PRINTED COPIES ARE UNCONTROLLED. CONTROLLED COPY IS AVAILABLE ON COMPANY INTRANET.1/2 AECOM – North Carolina Standard Operating Procedures Groundwater Sampling Using Low-Flow, Minimal- 1.Purpose and Scope Standard operating procedures to collect groundwater samples using low-flow, minimal drawdown techniques. 2.Procedure 2.1 Required Equipment HASP Field Note Book and sampling logs. Dedicated Teflon® tubing, scissors (instrument to cut tubing) Peristaltic or Submersible Pump Flexible tubing for peristaltic pump (as necessary) Electronic water level indicator or oil-water interface probe Collection container (5-gallon buck or similar container) PPE Sample bottles Calculator Water Quality Meter with flow through cell Decontamination 2.2 Procedure 1.Review HASP. The field technician will don nitrile (or other HASP-approved gloves based on contaminants) gloves for all associated field work and sampling. 2.Open all wells to be sampled and allow equilibration time. Well caps should be placed adjacent to the monitoring wells on a clean area such as a small piece of plastic or towel. 3.Measure static water levels using the electronic water level indicator, or other similar device, and utilizing decontamination procedures to decontaminate the water level indicator before measuring water levels in the first well, between each well, and after completion of all water level measurements. 4.Sampling should occur in a progression from least to most contaminated monitoring wells. The tubing or pump should be carefully lowered to the middle of the screened interval or slightly above the middle (e.g., 2-3 ft below the top of a 5 ft screen) to minimize disturbance in the well. Only new, dedicated tubing should be used for each sample. If using a submersible pump, the pump must be properly decontaminated before installation into each monitoring well. 5.Begin pumping slowly, at approximately 100mL per minute to minimize the risk of over- pumping the monitoring well and causing drawdown greater than 0.33 ft. The pumping rate can be gradually increased if drawdown remains below 0.33 ft. Should drawdown greater than 0.33 ft be observed, the pumping rate should be decreased until drawdown falls below 0.33 ft. If total drawdown exceeds 0.33 ft, the low-flow, minimal drawdown sampling method of groundwater sampling should be reconsidered and other more appropriate sampling techniques evaluated. AECOM Groundwater Sampling Using Low-Flow, Minimal-Drawdown Methods (V2)Revision July 2, 2024 PRINTED COPIES ARE UNCONTROLLED. CONTROLLED COPY IS AVAILABLE ON COMPANY INTRANET.2/2 6.In-line water quality indicator parameters should be monitored at three to five minute intervals during purging, dependent on pumping rate. The timing between the interval readings should not be less than the turnover rate of the groundwater in the flow through cell. For example, a three-minute interval would be acceptable when using a flow through cell with a 500mL capacity at a pumping rate of 250mL/min rate. A three-minute reading interval would not be acceptable when using flow through cell with a 500mL capacity and pumping of 100mL/min rate. 7.Indicator parameters monitored will include pH, oxidation / redox potential (ORP), conductivity, dissolved oxygen (DO) and turbidity. Stabilization is achieved after all parameters have stabilized for three successive readings. Stabilization for the parameters is considered to be: ± 0.1 for pH, ± 3% for conductivity, ± 10 mv for redox potential, and ± 10% for turbidity and DO. Depth to groundwater should be collected at each interval to monitor drawdown. 8.Following stabilization, sampling should be initiated. If using a submersible pump, such as a bladder pump, the flow through cell should be disconnected or bypassed during sample collection to avoid cross-contamination. The pumping rate should be decreased as necessary to minimize loss of volatiles as a result of aeration during the filling of sample bottles. If a peristaltic pump is used, the monitoring well should be sampled using one of the below methods: a.Remove the drop tubing from the inlet side of the pump. Submerge the drop tubing into the water column while preventing the water in the tubing from flowing back into the well. Carefully remove the drop tubing from the well and allow the groundwater to drain into the sample containers. Repeat this process until all sample containers are filled. b.Fill the down-well tubing with the peristaltic pump. Once filled, remove the tubing from the pump while preventing the water in the tubing from flowing back into the well. Pull the tubing from the well, and then carefully allow the groundwater to drain into the sample vials. Repeat this process until all sample containers are filled. c.Use the pump to fill the drop tubing and then withdraw the tubing from the well. Reverse the flow on the peristaltic pumps to deliver the sample into the sample containers at a slow, steady rate while taking care not to sample groundwater that has come into contact with the flexible tubing at the peristaltic pump. Repeat this process until all sample containers are filled. Care should be taken during each of these sampling methods to avoid aerating the sample. 9.Volatile and gas sensitive (e.g., Fe2+, CH4, H2 S/HS-, alkalinity) parameters should be sampled first. 10.Label sample bottles – date, time, project identifier, sample location, depth (if required), required analysis, preservative (if used), and sampler’s initials. Place samples in cooler with ice. Complete chain-of-custody form (supplied by the laboratory) and record site activities in field log book. Pack cooler for shipping or deliver samples to laboratory. Retain a copy of chain-of-custody and submit other copies with samples. Remove all equipment from the monitoring well. Close and secure the monitoring well. 3.Records List of the official records that are generated and support this procedure a.Field Notes b.Equipment Calibration Sheets c.Decontamination Records Soil Gas Sampling (Rev2)Revision November 2023 PRINTED COPIES ARE UNCONTROLLED. CONTROLLED COPY IS AVAILABLE ON COMPANY INTRANET.1/4 AECOM – North Carolina Standard Operating Procedures Soil Gas Sampling 1.Purpose and Scope Standard operating procedure for the collection of soil gas samples using laboratory provided Summa canisters. 2.Procedure 2.1 Required Equipment: Project Health and Safety Plan (HASP) Work Plan Summa Canister with a Flow Regulator from a certified laboratory (pre-calibrated for a 200 ml/min flow rate, Image-2, A1) Field forms – Summa Canister Field Sampling Data Sheet ¼” Stainless steel nuts and ferrules Stainless-steel hand auger Stainless-steel SGV 6 IN. Screened Implant with Stepped Fitting (AMS Vapor Implants Sampling Method, Image-1 and Image-2, B1)1/4" OD x 1/8" ID Teflon tubingHammer drill (If soil gas installation is being conducted in a location were concrete/asphalt is present) Hammer drill bit, diameter size based on size of stainless-steel hand auger Extension cord Portable generator (If power is not available and hammer drill is required for installation) #2 driller sand Hydraulic cement and/or bentonite Water Decontamination equipment Ziplock bags Helium detector Helium Helium chamber 50mL Syringe with Luer-Lock tip Tedlar bags (Image-2, C1) Safety Cones Laminated Sign to notify Air Sampling in progress Chain of Custody (COC) FedEx forms Standard wrench setDigital camera3-Way Stopcock Valve (Image-2, D1)Two 1/4 in. O.D. Polypropylene Push-to-Connect Valve (Image-2, E1 & E2) 1/4 in. Push-To-Connect Polypropylene Tee Fitting (Image-2, F1)Shut-in Leak Check Assembly: Image-2, In-line vacuum pressure gauge (G1) and Brass two-way valve (G2). 2.2 Vapor Implant Sampling Method 1.Prior to mobilizing to the field, ensure summa canisters had adequate vacuum for sampling. Additionally, ensure all summa canister components have been provided by the lab that are necessary to complete the sampling. If there is any issues with a summa canister, contact the lab immediately for replacement. 2.Prior to intrusive activities, locate any underground utilities to ensure the safety of subsurface work conditions. AECOM Soil Gas Sampling (Rev2)Revision November 2023 PRINTED COPIES ARE UNCONTROLLED. CONTROLLED COPY IS AVAILABLE ON COMPANY INTRANET.2/4 3.Use a clean, stainless steel hand auger to auger down to a minimum of 6 feet beneath the ground surface (ft Bgs). If a minimum depth of 6 ft Bgs cannot be reached, notify the AECOM project manager for the site before collecting a sample. Note: Vapor implant should not be placed in saturated soils. Additionally, Soil gas sampling should not occur during a significant rain event (e.g., 1/2 inch or greater of rainfall during a 24-hour period). A minimum of 5 days after a significant rain event or 5 days after watering has stopped in areas that are irrigated to complete soil gas sampling. This does not apply to areas where infiltration has not occurred, such as under buildings or high- integrity pavement. 4.Attach Teflon tubing to the barbed tang of a 6” AMS Vapor Implant (AMS Item #21010). Make sure that the connection between the barbed end of the implant and the Teflon tubing is secure. *Stainless Steel SGV 6 IN. Screened Implant with Stepped Fitting (Image-1) 5.Lower the AMS Vapor Implant and attached tubing into the borehole until the Implant reaches the desired depth. The top of the vapor implant should be a minimum of five feet below ground surface. 6.Cut the tubing to the desired length so that you have approximately 2’ of extra tubing to attach to the summa canister. 7.Using #2A filter sand, add enough sand to cover the 6” Implant and 2-3” above the Implant. Check the depth of sand using a measuring tape. The top of the sand should be a minimum of five feet below ground surface. 8.Add hydraulic cement or bentonite above the top of the sand to the surface to create a seal. If using cement, place a thin layer of 1-2 inches of dry bentonite above the sand pack to prevent the cement from intruding into the sand pack before it hardens. If using bentonite, hydrate the bentonite to ensure a proper seal. Wait 2 hours or until the hydraulic cement has fully hardened, whichever is longer. 9.Use a syringe to purge the subsurface air through the Teflon tubing. Purge a maximum of three pore volume of the borehole. The pore volume should be a minimum of the volume of the tubing and sand filter pack. Calculate pore volume using formula: v = π ra2La + π rt2Lt where: v =Volume La =Length of sand-filled annular space, and ra =Radius of annular space Lt =Length of tubing, and rt =Radius of tubing 10.Thread the tubing through the helium leak test device (helium chamber). 11.Connect the Teflon tubing from the soil gas point to a 2-way valve (Image-2, E1) and use Teflon tubing to connect the 2-way valve (Image-2, E1) to the tee fitting (Image-2, F1). 12.Connect Teflon tubing to the stainless-steel summa canister (Image-2, A1) using air-tight stainless-steel fittings and then connect the Teflon tubing to tee fitting (Image-2, F1). AECOM Soil Gas Sampling (Rev2)Revision November 2023 PRINTED COPIES ARE UNCONTROLLED. CONTROLLED COPY IS AVAILABLE ON COMPANY INTRANET.3/4 13.Connect Teflon tubing to the last open connection on the tee fitting (Image-2, F1) then connect the Teflon tubing to a 2-way valve (Image-2, E2). 14.Connect the 2-way valve (Image-2, E2) to the in line Shut-in Leak Check Assembly (Image-2: G1 and G2). 15.Connect the in line Shut-in Leak Check Assembly (Image-2: G1 and G2) to the 3-way stopcock valve (Image-2, D1). One connection will be used to apply a vacuum using a syringe (Image-2, C1) and one connection will be connected to a Tedlar bag. 16.Conduct the leak test and shut-in test as outlined in Section 3. 17.After the completion of the leak test and shut-in test, utilize the laboratory supplied flow controller to pull the sample over the desired time interval. The extraction rate of the summa canister should not exceed 200 ml/min. 18.To remove the stainless-steel Implant, break up the hydraulic seal. Tug gently on the Teflon tubing until the Implant is freed. 19.Remove the Teflon tubing from the barb and dispose of the tubing and the disposable stainless-steel Implant. 20.Backfill borehole with hydraulic cement. 3.Leak Test and Shut-In Test Procedure 1.Close the 2-way valve closest to the soil gas point (Image-2, E1). 2.Use a syringe (Image-2, C1) to extract a negative pressure of approximately 10-inches of mercury (inHg) to the sample train. * Shut-In Test Procedure (Image-2) AECOM Soil Gas Sampling (Rev2)Revision November 2023 PRINTED COPIES ARE UNCONTROLLED. CONTROLLED COPY IS AVAILABLE ON COMPANY INTRANET.4/4 3.Close the 2-way brass valve (Image-2, G2) between the vacuum pressure gauge (Image-2, G1) and the vacuum pump or syringe (Image-2, C1). 4.Record the initial negative pressure displayed on the vacuum pressure gauge (Image-2, G1). 5.Monitor the vacuum pressure gauge (Image-2, G1) for 5 minutes. Ensure that the negative pressure does not decrease by more than 1-inHg. 6.Record the negative pressure reading on the summa cannister field data sheet. If the reading has dropped less than 1-inHg, proceed to the next step. If the negative pressure reading has dropped more than 1-inHg, reconstruct the sample train as necessary and repeat the test. 7.Close the 2-way valve (Image-2, E2) between the vacuum pressure gauge (Image-2, G1) and the tee fitting (Image-2, F1). 8.Open the 2-way valve (Image-2, E1) between the tee fitting (Image-2, F1) and the soil gas point. 9.Monitor the vacuum presusure gauge for 5 minutes. Ensure that the negative pressure does not decrease by more than 1-inHg. 10.Record the negative pressure reading. If the reading has dropped by less than 1-inHg, proceed to the next step. If the negative pressure reading has dropped by more than 1-inHg, reconstruct the sample train as necessary and repeat the test. 11.Open all 2-way valves (Image-2, E2 and G2) between the syringe (Image-2, C1) and the tee fitting (Image-2, G1). 12.Attach the helium detector to the helium chamber. Attach the helium container to the helium chamber using teflon tubing and fill the helium chamber with helium until the helium detector reads >50%. 13.Use the syringe to fill a 1 Liter Tedlar bag with air from the sample port. This can be done by filling the syringe with the 3-way stopcock valve (Image-2, D1) to the Tedlar bag closed and the connection to the soil gas point open and emptying the syringe with the 3-way stopcock valve (Image-2, D1) to the Tedlar bag open and the connection to the soil gas point closed. 14.Close the Tedlar bag and detach it from the pump. 15.Turn off the flow of helium into the helium leak test device. 16.Remove the helium detector from the leak test device and allow the helium detector reading to reach 0 ppm. 17.Insert the helium detector into the silicon tubing attached to the Tedlar bag and open valve on the bag. 18.Record the reading. If the reading is below 10% of the value measured within the test device, proceed to the next step. If the reading is above 10%, repeat the leak test and reconstruct the sample point as necessary. 19.Be sure that the valve to the Tedlar bag is open and that nothing is blocking the flow to the helium detector. The detector may produce false readings if the detector pump is strained or if methane is present in the soil gas. 4.Records a.Summa Canister Field Data Sheet b.Equipment Calibration Sheets 5.Attachments a.Summa Canister Field Data Sheet Indoor Air Sampling SOP ()Revision June 4, 2017 PRINTED COPIES ARE UNCONTROLLED. CONTROLLED COPY IS AVAILABLE ON COMPANY INTRANET.1/3 AECOM – North Carolina Standard Operating Procedures Indoor Air Sampling SOP 1.Purpose and Scope Standard operating procedures for the collection of an indoor air sample using a laboratory provided Summa canister. 2.Procedure 2.1 Required Equipment Project Health and Safety Plan (HASP) Work Plan 6 Liter Summa Canister with a Flow Regulator from a certified laboratory (precalibrated for an 8 hour interval)Field forms –Building Survey form (Attachment 1), Summa Canister Field Sampling Data Sheet (Attachment 2) ¼” Stainless steel nuts and ferrules 1/4" OD x 1/8" ID Teflon tubing Safety Cones Laminated Sign to notify Air Sampling in progress Chain of Custody (COC) Shipping forms, if needed Standard wrench set Digital camera 2.2 Sampling Protocol 1.Select an indoor sampling location in the area of highest subsurface contamination and/or the location with the most traffic, if known. 2.If this information is not available, select a sampling location near the center of the building. 3.The inlet of the sample should be at breathing height (between 3 feet and 5 feet above the floor). 4.If a stand or table is available, place the canister on the stand or table for sample collection. AECOM Indoor Air Sampling SOP ()Revision June 4, 2017 PRINTED COPIES ARE UNCONTROLLED. CONTROLLED COPY IS AVAILABLE ON COMPANY INTRANET.2/3 5.If necessary, attach a short length of stainless-steel or Teflon tubing to the summa canister using stainless steel air tight fittings and anchor the inlet of the tubing so that it is located at breathing height (e.g., with a zip-tie). 6.Select an ambient air sampling location that is representative of the heating, ventilation, and air conditioning (HVAC) system inlet air for the building if an HVAC system is operating. 7.If the HVAC inlet is on the side of the building, locate the summa canister inlet near the HVAC inlet. 8.If the HVAC inlet is on the roof of the building, locate the summa canister inlet on the roof using the safest method available. 9.If there is no HVAC inlet, select a monitoring location immediately upwind of the building. Avoid sampling near walls, under trees, or other areas with obstructed air flow. 10.Connect the Teflon tubing (if applicable) to the summa canister using air tight stainless steel fittings. 11.Document the sampling locations using a tape measure. 12.Note the characteristics of the building, including cracks in the floor, a list of chemicals (including the brand name of the chemical, the quantity and the location) present in the building that may affect results, and other pertinent information. 13.Complete the field forms and include as much detail as possible. A blank building survey form is included in Attachment 1. 14.Check the canister vacuum with a dedicated gauge (i.e., check all canisters with the same gauge. The vacuum should be about -28 to -29” Hg. If any canister differs from the others by 3” Hg or more, do not use that canister. 15.Attach the summa canisters and flow controllers to the Teflon tubing (if applicable) using the stainless steel fittings provided by the laboratory. 16.Set up both the ambient air and indoor air canisters prior to opening the canister valves. 17.Place safety cones and “Air Sample in Progress” signs around the sampling locations as necessary. 18.Open the ambient air or indoor air canister valve and record the time and vacuum gauge reading (if there is a built-in vacuum gauge). Complete the Summa Canister Field Data sheet (Attachment 2). 19.Repeat this process on the other canister as soon as possible. Figure 2: Summa Canister AECOM Indoor Air Sampling SOP ()Revision June 4, 2017 PRINTED COPIES ARE UNCONTROLLED. CONTROLLED COPY IS AVAILABLE ON COMPANY INTRANET.3/3 20.The vacuum should decrease as determined by the flow controller requested from the laboratory. Typically an 8 hour flow controller is requested. Record the final times and vacuums prior to closing the valves. 21.Close the valves at approximately the same time. 22.Label the canisters and fill out the chain of custody. 23.The laboratory will analyze the sample using Method TO-15 SIM (Selected Ion Method). Typically, a list of analytes will be chosen that is specific to the program. 24.Ship the canister to the laboratory. 25.Clean up and remove all sampling materials from the site. 3.Records a.Building Survey Form b.Summa Canister Field Data Sheet 4.Attachments a.Building Survey Form b.Summa Canister Field Data sheet CamScanner CamScanner CamScanner CamScanner CamScanner CamScanner Appendix B Soil Boring Logs Concrete and fill Red-brown silty CLAY, low plasticity, mild odor 10 9 8 7 6 5 4 3 2 1 0 CL Boring Terminated 5 feet below ground surface 608 Elwell Avenue EM/TB NA Hand Auger HA 60722767 SB-3 NA NA 5 1/31/2024 1/31/20244EM NA NA Frye & Webster Cleaners DC410064 PROJECT NAME: LOCATION: DRILLING CONTRACTOR: DRILLING METHOD: DRILLING EQUIPMENT: PROJECT NO.: NORTHING: EASTING: DRILLER: TOTAL DEPTH: WELL/BORING ID: TOC ELEVATION: LOGGED BY:BORE HOLE DIAMETER:DATE STARTED:DATE COMPLETED: De p t h ( f e e t ) Description DEPTH TO WATER: Wa t e r L e v e l Greensboro, NC CITY, STATE: ProfileUSCS EMM SDH 60722767SB-3 Frye & Webster Cleaners DC410064 608 Elwell Avenue Greensboro, NC PROJECT NO.: DRAWN BY: CHECKED BY: SHEET ID: App. B Soil Boring LogNOTES: Concrete and fill Red-brown silty CLAY with gravel, low plasticity, no odor 10 9 8 7 6 5 4 3 2 1 0 CL Boring Terminated 5 feet below ground surface 608 Elwell Avenue EM/TB NA Hand Auger HA 60722767 SB-4 NA NA 5 1/31/2024 1/31/20244EM NA NA Frye & Webster Cleaners DC410064 PROJECT NAME: LOCATION: DRILLING CONTRACTOR: DRILLING METHOD: DRILLING EQUIPMENT: PROJECT NO.: NORTHING: EASTING: DRILLER: TOTAL DEPTH: WELL/BORING ID: TOC ELEVATION: LOGGED BY:BORE HOLE DIAMETER:DATE STARTED:DATE COMPLETED: De p t h ( f e e t ) Description DEPTH TO WATER: Wa t e r L e v e l Greensboro, NC CITY, STATE: ProfileUSCS EMM SDH 60722767SB-4 Frye & Webster Cleaners DC410064 608 Elwell Avenue Greensboro, NC PROJECT NO.: DRAWN BY: CHECKED BY: SHEET ID: App. B Soil Boring LogNOTES: Gravel and organic soil Brown silty CLAY, moist, no odor 10 9 8 7 6 5 4 3 2 1 0 CL Boring Terminated 5 feet below ground surface 608 Elwell Avenue EM/TB NA Hand Auger HA 60722767 SB-5 NA NA 5 1/29/2024 1/29/20244TB NA NA Frye & Webster Cleaners DC410064 PROJECT NAME: LOCATION: DRILLING CONTRACTOR: DRILLING METHOD: DRILLING EQUIPMENT: PROJECT NO.: NORTHING: EASTING: DRILLER: TOTAL DEPTH: WELL/BORING ID: TOC ELEVATION: LOGGED BY:BORE HOLE DIAMETER:DATE STARTED:DATE COMPLETED: De p t h ( f e e t ) Description DEPTH TO WATER: Wa t e r L e v e l Greensboro, NC CITY, STATE: ProfileUSCS EMM SDH 60722767SB-5 Frye & Webster Cleaners DC410064 608 Elwell Avenue Greensboro, NC PROJECT NO.: DRAWN BY: CHECKED BY: SHEET ID: App. B Soil Boring LogNOTES: Organic soil Red-brown silty CLAY 10 9 8 7 6 5 4 3 2 1 0 CL Boring Terminated 5 feet below ground surface 608 Elwell Avenue EM/TB NA Hand Auger HA 60722767 SB-6 NA NA 5 1/30/2024 1/30/20244TB NA NA Frye & Webster Cleaners DC410064 PROJECT NAME: LOCATION: DRILLING CONTRACTOR: DRILLING METHOD: DRILLING EQUIPMENT: PROJECT NO.: NORTHING: EASTING: DRILLER: TOTAL DEPTH: WELL/BORING ID: TOC ELEVATION: LOGGED BY:BORE HOLE DIAMETER:DATE STARTED:DATE COMPLETED: De p t h ( f e e t ) Description DEPTH TO WATER: Wa t e r L e v e l Greensboro, NC CITY, STATE: ProfileUSCS EMM SDH 60722767SB-6 Frye & Webster Cleaners DC410064 608 Elwell Avenue Greensboro, NC PROJECT NO.: DRAWN BY: CHECKED BY: SHEET ID: App. B Soil Boring LogNOTES: Organic soil, gravel, glass Red-brown silty CLAY with sand, no odor 10 9 8 7 6 5 4 3 2 1 0 CL Boring Terminated 5 feet below ground surface 608 Elwell Avenue EM/TB NA Hand Auger HA 60722767 SB-7 NA NA 5 1/29/2024 1/29/20244TB NA NA Frye & Webster Cleaners DC410064 PROJECT NAME: LOCATION: DRILLING CONTRACTOR: DRILLING METHOD: DRILLING EQUIPMENT: PROJECT NO.: NORTHING: EASTING: DRILLER: TOTAL DEPTH: WELL/BORING ID: TOC ELEVATION: LOGGED BY:BORE HOLE DIAMETER:DATE STARTED:DATE COMPLETED: De p t h ( f e e t ) Description DEPTH TO WATER: Wa t e r L e v e l Greensboro, NC CITY, STATE: ProfileUSCS EMM SDH 60722767SB-7 Frye & Webster Cleaners DC410064 608 Elwell Avenue Greensboro, NC PROJECT NO.: DRAWN BY: CHECKED BY: SHEET ID: App. B Soil Boring LogNOTES: Red-brown silty CLAY, no odor 10 9 8 7 6 5 4 3 2 1 0 CL Boring Terminated 5 feet below ground surface 608 Elwell Avenue EM/TB NA Hand Auger HA 60722767 SB-8 NA NA 5 1/29/2024 1/29/20244EM NA NA Frye & Webster Cleaners DC410064 PROJECT NAME: LOCATION: DRILLING CONTRACTOR: DRILLING METHOD: DRILLING EQUIPMENT: PROJECT NO.: NORTHING: EASTING: DRILLER: TOTAL DEPTH: WELL/BORING ID: TOC ELEVATION: LOGGED BY:BORE HOLE DIAMETER:DATE STARTED:DATE COMPLETED: De p t h ( f e e t ) Description DEPTH TO WATER: Wa t e r L e v e l Greensboro, NC CITY, STATE: ProfileUSCS EMM SDH 60722767SB-8 Frye & Webster Cleaners DC410064 608 Elwell Avenue Greensboro, NC PROJECT NO.: DRAWN BY: CHECKED BY: SHEET ID: App. B Soil Boring LogNOTES: Gravel and organic soil Brown silty CLAY, moist, no odor 10 9 8 7 6 5 4 3 2 1 0 CL Boring Terminated 5 feet below ground surface 608 Elwell Avenue EM/TB NA Hand Auger HA 60722767 SB-9 NA NA 5 1/29/2024 1/29/20244TB NA NA Frye & Webster Cleaners DC410064 PROJECT NAME: LOCATION: DRILLING CONTRACTOR: DRILLING METHOD: DRILLING EQUIPMENT: PROJECT NO.: NORTHING: EASTING: DRILLER: TOTAL DEPTH: WELL/BORING ID: TOC ELEVATION: LOGGED BY:BORE HOLE DIAMETER:DATE STARTED:DATE COMPLETED: De p t h ( f e e t ) Description DEPTH TO WATER: Wa t e r L e v e l Greensboro, NC CITY, STATE: ProfileUSCS EMM SDH 60722767SB-9 Frye & Webster Cleaners DC410064 608 Elwell Avenue Greensboro, NC PROJECT NO.: DRAWN BY: CHECKED BY: SHEET ID: App. B Soil Boring LogNOTES: Gravel Brown silty CLAY, moist to wet, no odor 10 9 8 7 6 5 4 3 2 1 0 CL Boring Terminated 5 feet below ground surface 608 Elwell Avenue EM/TB NA Hand Auger HA 60722767 SB-10 NA NA 5 1/30/2024 1/30/20244TB NA NA Frye & Webster Cleaners DC410064 PROJECT NAME: LOCATION: DRILLING CONTRACTOR: DRILLING METHOD: DRILLING EQUIPMENT: PROJECT NO.: NORTHING: EASTING: DRILLER: TOTAL DEPTH: WELL/BORING ID: TOC ELEVATION: LOGGED BY:BORE HOLE DIAMETER:DATE STARTED:DATE COMPLETED: De p t h ( f e e t ) Description DEPTH TO WATER: Wa t e r L e v e l Greensboro, NC CITY, STATE: ProfileUSCS EMM SDH 60722767SB-10 Frye & Webster Cleaners DC410064 608 Elwell Avenue Greensboro, NC PROJECT NO.: DRAWN BY: CHECKED BY: SHEET ID: App. B Soil Boring LogNOTES: Gravel Red-brown silty CLAY with sand, no odor 10 9 8 7 6 5 4 3 2 1 0 CL Boring Terminated 5 feet below ground surface 608 Elwell Avenue EM/TB NA Hand Auger HA 60722767 SB-11 NA NA 5 1/30/2024 1/30/20244TB NA NA Frye & Webster Cleaners DC410064 PROJECT NAME: LOCATION: DRILLING CONTRACTOR: DRILLING METHOD: DRILLING EQUIPMENT: PROJECT NO.: NORTHING: EASTING: DRILLER: TOTAL DEPTH: WELL/BORING ID: TOC ELEVATION: LOGGED BY:BORE HOLE DIAMETER:DATE STARTED:DATE COMPLETED: De p t h ( f e e t ) Description DEPTH TO WATER: Wa t e r L e v e l Greensboro, NC CITY, STATE: ProfileUSCS EMM SDH 60722767SB-11 Frye & Webster Cleaners DC410064 608 Elwell Avenue Greensboro, NC PROJECT NO.: DRAWN BY: CHECKED BY: SHEET ID: App. B Soil Boring LogNOTES: Appendix C Laboratory Analytical Reports ANALYTICAL REPORT February 16, 2024 AECOM - Raleigh, NC Sample Delivery Group:L1701794 Samples Received:02/02/2024 Project Number:60722767 Description:Frye and Webster DC410064 Site:DC410064 Report To:Stephanie Hempel 5438 Wade Park Blvd. Suite 200 Raleigh, NC 27607 Entire Report Reviewed By: February 16, 2024 [Preliminary Report] Chris McCord Project Manager Results relate only to the items tested or calibrated and are reported as rounded values. This test report shall not be reproduced, except in full, without written approval of the laboratory. Where applicable, sampling conducted by Pace Analytical National is performed per guidance provided in laboratory standard operating procedures ENV-SOP-MTJL-0067 and ENV-SOP-MTJL-0068. Where sampling conducted by the customer, results relate to the accuracy of the information provided, and as the samples are received. Pace Analytical National 12065 Lebanon Rd Mount Juliet, TN 37122 615-758-5858 800-767-5859 www.pacenational.com 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/16/24 11:51 1 of 89 February 19, 2024 Chris McCord Project Manager ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/19/24 20:18 1 of 89 TABLE OF CONTENTS Cp: Cover Page 1 Tc: Table of Contents 2 Ss: Sample Summary 3 Cn: Case Narrative 6 Sr: Sample Results 7 SB-8 0-1 L1701794-01 7 SB-8 1-2 L1701794-02 10 SB-7 (0-1) L1701794-03 13 SB-7 (3-4) L1701794-04 16 SB-9 (0-1) L1701794-05 19 SB-9 (1-2) L1701794-06 22 SB-11 0-1 L1701794-07 25 SB-11 1-2 L1701794-08 28 SB-6 0-1 L1701794-09 31 SB-6 1-2 L1701794-10 34 SB-4 0-1 L1701794-11 37 SB-4 2-3 L1701794-12 40 SB-3 0-1 L1701794-13 43 SB-3 1-2 L1701794-14 46 SB-5 0-1 L1701794-15 49 SB-5 4-5 L1701794-16 52 SB-10 0-1 L1701794-17 55 SB-10 3-4 L1701794-18 58 Qc: Quality Control Summary 61 Total Solids by Method 2540 G-2011 61 Volatile Organic Compounds (GC/MS) by Method 8260D 64 Semi Volatile Organic Compounds (GC/MS) by Method 8270E 69 Gl: Glossary of Terms 85 Al: Accreditations & Locations 87 Sc: Sample Chain of Custody 88 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/16/24 11:51 2 of 89 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/19/24 20:18 2 of 89 SAMPLE SUMMARY Collected by Collected date/time Received date/time SB-8 0-1 L1701794-01 Solid EM/TB 01/29/24 13:50 02/02/24 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Total Solids by Method 2540 G-2011 WG2219975 1 02/06/24 15:41 02/06/24 15:57 CMK Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260D WG2220500 1 01/29/24 13:50 02/05/24 20:59 DWR Mt. Juliet, TN Semi Volatile Organic Compounds (GC/MS) by Method 8270E WG2220589 1 02/06/24 17:05 02/07/24 08:17 JCH Mt. Juliet, TN Collected by Collected date/time Received date/time SB-8 1-2 L1701794-02 Solid EM/TB 01/29/24 14:00 02/02/24 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Total Solids by Method 2540 G-2011 WG2219977 1 02/06/24 10:56 02/06/24 11:02 CMK Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260D WG2220500 1 01/29/24 14:00 02/05/24 21:31 DWR Mt. Juliet, TN Semi Volatile Organic Compounds (GC/MS) by Method 8270E WG2221334 1 02/07/24 08:21 02/09/24 04:28 AMS Mt. Juliet, TN Collected by Collected date/time Received date/time SB-7 (0-1) L1701794-03 Solid EM/TB 01/29/24 14:35 02/02/24 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Total Solids by Method 2540 G-2011 WG2219977 1 02/06/24 10:56 02/06/24 11:02 CMK Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260D WG2220500 1 01/29/24 14:35 02/05/24 21:50 DWR Mt. Juliet, TN Semi Volatile Organic Compounds (GC/MS) by Method 8270E WG2220590 1 02/07/24 08:09 02/08/24 19:42 AMS Mt. Juliet, TN Collected by Collected date/time Received date/time SB-7 (3-4) L1701794-04 Solid EM/TB 01/29/24 14:35 02/02/24 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Total Solids by Method 2540 G-2011 WG2219977 1 02/06/24 10:56 02/06/24 11:02 CMK Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260D WG2220500 1 01/29/24 14:35 02/05/24 22:08 DWR Mt. Juliet, TN Semi Volatile Organic Compounds (GC/MS) by Method 8270E WG2220590 1 02/07/24 08:09 02/08/24 18:20 AMS Mt. Juliet, TN Collected by Collected date/time Received date/time SB-9 (0-1) L1701794-05 Solid EM/TB 01/29/24 15:15 02/02/24 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Total Solids by Method 2540 G-2011 WG2219977 1 02/06/24 10:56 02/06/24 11:02 CMK Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260D WG2220500 1 01/29/24 15:15 02/05/24 22:27 DWR Mt. Juliet, TN Semi Volatile Organic Compounds (GC/MS) by Method 8270E WG2220590 1 02/07/24 08:09 02/09/24 00:29 AMS Mt. Juliet, TN Collected by Collected date/time Received date/time SB-9 (1-2) L1701794-06 Solid EM/TB 01/29/24 15:20 02/02/24 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Total Solids by Method 2540 G-2011 WG2219977 1 02/06/24 10:56 02/06/24 11:02 CMK Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260D WG2220500 1 01/29/24 15:20 02/05/24 22:46 DWR Mt. Juliet, TN Semi Volatile Organic Compounds (GC/MS) by Method 8270E WG2220590 1 02/07/24 08:09 02/08/24 18:41 AMS Mt. Juliet, TN 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/16/24 11:51 3 of 89 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/19/24 20:18 3 of 89 SAMPLE SUMMARY Collected by Collected date/time Received date/time SB-11 0-1 L1701794-07 Solid EM/TB 01/30/24 09:05 02/02/24 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Total Solids by Method 2540 G-2011 WG2219977 1 02/06/24 10:56 02/06/24 11:02 CMK Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260D WG2220500 1 01/30/24 09:05 02/05/24 23:06 DWR Mt. Juliet, TN Semi Volatile Organic Compounds (GC/MS) by Method 8270E WG2220590 1 02/07/24 08:09 02/08/24 19:22 AMS Mt. Juliet, TN Collected by Collected date/time Received date/time SB-11 1-2 L1701794-08 Solid EM/TB 01/30/24 09:15 02/02/24 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Total Solids by Method 2540 G-2011 WG2219977 1 02/06/24 10:56 02/06/24 11:02 CMK Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260D WG2220500 1 01/30/24 09:15 02/05/24 23:25 DWR Mt. Juliet, TN Semi Volatile Organic Compounds (GC/MS) by Method 8270E WG2220590 1 02/07/24 08:09 02/08/24 19:01 AMS Mt. Juliet, TN Collected by Collected date/time Received date/time SB-6 0-1 L1701794-09 Solid EM/TB 01/30/24 14:45 02/02/24 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Total Solids by Method 2540 G-2011 WG2219977 1 02/06/24 10:56 02/06/24 11:02 CMK Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260D WG2220500 1 01/30/24 14:45 02/05/24 23:44 DWR Mt. Juliet, TN Semi Volatile Organic Compounds (GC/MS) by Method 8270E WG2220590 1 02/07/24 08:09 02/09/24 00:09 AMS Mt. Juliet, TN Collected by Collected date/time Received date/time SB-6 1-2 L1701794-10 Solid EM/TB 01/30/24 14:55 02/02/24 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Total Solids by Method 2540 G-2011 WG2219977 1 02/06/24 10:56 02/06/24 11:02 CMK Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260D WG2220500 1 01/30/24 14:55 02/06/24 00:03 DWR Mt. Juliet, TN Semi Volatile Organic Compounds (GC/MS) by Method 8270E WG2220590 1 02/07/24 08:09 02/08/24 20:03 AMS Mt. Juliet, TN Collected by Collected date/time Received date/time SB-4 0-1 L1701794-11 Solid EM/TB 01/31/24 10:45 02/02/24 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Total Solids by Method 2540 G-2011 WG2219977 1 02/06/24 10:56 02/06/24 11:02 CMK Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260D WG2220500 1 01/31/24 10:45 02/06/24 00:23 DWR Mt. Juliet, TN Semi Volatile Organic Compounds (GC/MS) by Method 8270E WG2220590 1 02/07/24 08:09 02/15/24 06:11 JRM Mt. Juliet, TN Collected by Collected date/time Received date/time SB-4 2-3 L1701794-12 Solid EM/TB 01/31/24 10:50 02/02/24 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Total Solids by Method 2540 G-2011 WG2220127 1 02/06/24 15:18 02/06/24 15:26 CMK Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260D WG2220500 1 01/31/24 10:50 02/06/24 00:42 DWR Mt. Juliet, TN Semi Volatile Organic Compounds (GC/MS) by Method 8270E WG2220590 1 02/07/24 08:09 02/08/24 20:23 AMS Mt. Juliet, TN 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/16/24 11:51 4 of 89 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/19/24 20:18 4 of 89 SAMPLE SUMMARY Collected by Collected date/time Received date/time SB-3 0-1 L1701794-13 Solid EM/TB 01/31/24 10:55 02/02/24 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Total Solids by Method 2540 G-2011 WG2220127 1 02/06/24 15:18 02/06/24 15:26 CMK Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260D WG2220500 1 01/31/24 10:55 02/06/24 01:01 DWR Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260D WG2224617 20 01/31/24 10:55 02/13/24 12:22 ACG Mt. Juliet, TN Semi Volatile Organic Compounds (GC/MS) by Method 8270E WG2220590 1 02/07/24 08:09 02/08/24 21:04 AMS Mt. Juliet, TN Collected by Collected date/time Received date/time SB-3 1-2 L1701794-14 Solid EM/TB 01/31/24 11:00 02/02/24 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Total Solids by Method 2540 G-2011 WG2220127 1 02/06/24 15:18 02/06/24 15:26 CMK Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260D WG2220500 1 01/31/24 11:00 02/06/24 01:20 DWR Mt. Juliet, TN Semi Volatile Organic Compounds (GC/MS) by Method 8270E WG2220590 1 02/07/24 08:09 02/08/24 20:44 AMS Mt. Juliet, TN Collected by Collected date/time Received date/time SB-5 0-1 L1701794-15 Solid EM/TB 01/29/24 16:30 02/02/24 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Total Solids by Method 2540 G-2011 WG2220127 1 02/06/24 15:18 02/06/24 15:26 CMK Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260D WG2220500 1 01/29/24 16:30 02/06/24 01:39 DWR Mt. Juliet, TN Semi Volatile Organic Compounds (GC/MS) by Method 8270E WG2220590 1 02/07/24 08:09 02/09/24 19:56 DSH Mt. Juliet, TN Collected by Collected date/time Received date/time SB-5 4-5 L1701794-16 Solid EM/TB 01/29/24 16:35 02/02/24 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Total Solids by Method 2540 G-2011 WG2220127 1 02/06/24 15:18 02/06/24 15:26 CMK Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260D WG2220500 1 01/29/24 16:35 02/06/24 01:58 GLN Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260D WG2224617 1 01/29/24 16:35 02/13/24 12:00 ACG Mt. Juliet, TN Semi Volatile Organic Compounds (GC/MS) by Method 8270E WG2220590 1 02/07/24 08:09 02/08/24 21:45 AMS Mt. Juliet, TN Collected by Collected date/time Received date/time SB-10 0-1 L1701794-17 Solid EM/TB 01/29/24 16:45 02/02/24 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Total Solids by Method 2540 G-2011 WG2220127 1 02/06/24 15:18 02/06/24 15:26 CMK Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260D WG2220500 1 01/29/24 16:45 02/06/24 02:17 DWR Mt. Juliet, TN Semi Volatile Organic Compounds (GC/MS) by Method 8270E WG2220590 1 02/07/24 08:09 02/08/24 22:06 AMS Mt. Juliet, TN Collected by Collected date/time Received date/time SB-10 3-4 L1701794-18 Solid EM/TB 01/29/24 16:50 02/02/24 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Total Solids by Method 2540 G-2011 WG2220127 1 02/06/24 15:18 02/06/24 15:26 CMK Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260D WG2220500 1 01/29/24 16:50 02/06/24 02:40 DWR Mt. Juliet, TN Semi Volatile Organic Compounds (GC/MS) by Method 8270E WG2220590 1 02/07/24 08:09 02/08/24 21:25 AMS Mt. Juliet, TN 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/16/24 11:51 5 of 89 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/19/24 20:18 5 of 89 CASE NARRATIVE All sample aliquots were received at the correct temperature, in the proper containers, with the appropriate preservatives, and within method specified holding times, unless qualified or notated within the report. Where applicable, all MDL (LOD) and RDL (LOQ) values reported for environmental samples have been corrected for the dilution factor used in the analysis. All Method and Batch Quality Control are within established criteria except where addressed in this case narrative, a non-conformance form or properly qualified within the sample results. By my digital signature below, I affirm to the best of my knowledge, all problems/anomalies observed by the laboratory as having the potential to affect the quality of the data have been identified by the laboratory, and no information or data have been knowingly withheld that would affect the quality of the data. [Preliminary Report] Chris McCord Project Manager 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/16/24 11:51 6 of 89 Chris McCord Project Manager ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/19/24 20:18 6 of 89 SAMPLE RESULTS - 01 L1701794 SB-8 0-1 Collected date/time: 01/29/24 13:50 Total Solids by Method 2540 G-2011 Result Qualifier Dilution Analysis Batch Analyte %date / time Total Solids 79.5 1 02/06/2024 15:57 WG2219975 Volatile Organic Compounds (GC/MS) by Method 8260D Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time Acetone U 0.0582 0.0797 1 02/05/2024 20:59 WG2220500 Acrylonitrile U 0.00575 0.0199 1 02/05/2024 20:59 WG2220500 Benzene U 0.000744 0.00159 1 02/05/2024 20:59 WG2220500 Bromobenzene U 0.00143 0.0199 1 02/05/2024 20:59 WG2220500 Bromodichloromethane U 0.00116 0.00399 1 02/05/2024 20:59 WG2220500 Bromoform U 0.00187 0.0399 1 02/05/2024 20:59 WG2220500 Bromomethane U 0.00314 0.0199 1 02/05/2024 20:59 WG2220500 n-Butylbenzene U 0.00837 0.0199 1 02/05/2024 20:59 WG2220500 sec-Butylbenzene U 0.00459 0.0199 1 02/05/2024 20:59 WG2220500 tert-Butylbenzene U 0.00311 0.00797 1 02/05/2024 20:59 WG2220500 Carbon tetrachloride U 0.00143 0.00797 1 02/05/2024 20:59 WG2220500 Chlorobenzene U 0.000335 0.00399 1 02/05/2024 20:59 WG2220500 Chlorodibromomethane U 0.000976 0.00399 1 02/05/2024 20:59 WG2220500 Chloroethane U 0.00271 0.00797 1 02/05/2024 20:59 WG2220500 Chloroform 0.00255 B J 0.00164 0.00399 1 02/05/2024 20:59 WG2220500 Chloromethane U 0.00693 0.0199 1 02/05/2024 20:59 WG2220500 2-Chlorotoluene U 0.00138 0.00399 1 02/05/2024 20:59 WG2220500 4-Chlorotoluene U 0.000717 0.00797 1 02/05/2024 20:59 WG2220500 1,2-Dibromo-3-Chloropropane U 0.00622 0.0399 1 02/05/2024 20:59 WG2220500 1,2-Dibromoethane U 0.00103 0.00399 1 02/05/2024 20:59 WG2220500 Dibromomethane U 0.00120 0.00797 1 02/05/2024 20:59 WG2220500 1,2-Dichlorobenzene U 0.000678 0.00797 1 02/05/2024 20:59 WG2220500 1,3-Dichlorobenzene U 0.000956 0.00797 1 02/05/2024 20:59 WG2220500 1,4-Dichlorobenzene U 0.00112 0.00797 1 02/05/2024 20:59 WG2220500 Dichlorodifluoromethane U 0.00257 0.00797 1 02/05/2024 20:59 WG2220500 1,1-Dichloroethane U 0.000783 0.00399 1 02/05/2024 20:59 WG2220500 1,2-Dichloroethane U 0.00103 0.00399 1 02/05/2024 20:59 WG2220500 1,1-Dichloroethene U 0.000966 0.00399 1 02/05/2024 20:59 WG2220500 cis-1,2-Dichloroethene U 0.00117 0.00399 1 02/05/2024 20:59 WG2220500 trans-1,2-Dichloroethene U 0.00166 0.00797 1 02/05/2024 20:59 WG2220500 1,2-Dichloropropane U 0.00226 0.00797 1 02/05/2024 20:59 WG2220500 1,1-Dichloropropene U 0.00129 0.00399 1 02/05/2024 20:59 WG2220500 1,3-Dichloropropane U 0.000799 0.00797 1 02/05/2024 20:59 WG2220500 cis-1,3-Dichloropropene U 0.00121 0.00399 1 02/05/2024 20:59 WG2220500 trans-1,3-Dichloropropene U 0.00182 0.00797 1 02/05/2024 20:59 WG2220500 2,2-Dichloropropane U 0.00220 0.00399 1 02/05/2024 20:59 WG2220500 Di-isopropyl ether U 0.000654 0.00159 1 02/05/2024 20:59 WG2220500 Ethylbenzene U 0.00117 0.00399 1 02/05/2024 20:59 WG2220500 Hexachloro-1,3-butadiene U 0.00956 0.0399 1 02/05/2024 20:59 WG2220500 Isopropylbenzene U 0.000678 0.00399 1 02/05/2024 20:59 WG2220500 p-Isopropyltoluene U 0.00407 0.00797 1 02/05/2024 20:59 WG2220500 2-Butanone (MEK)U 0.101 0.159 1 02/05/2024 20:59 WG2220500 Methylene Chloride 0.0110 B J 0.0106 0.0399 1 02/05/2024 20:59 WG2220500 4-Methyl-2-pentanone (MIBK)U 0.00363 0.0399 1 02/05/2024 20:59 WG2220500 Methyl tert-butyl ether U 0.000558 0.00159 1 02/05/2024 20:59 WG2220500 Naphthalene U C3 0.00778 0.0199 1 02/05/2024 20:59 WG2220500 n-Propylbenzene U 0.00151 0.00797 1 02/05/2024 20:59 WG2220500 Styrene U 0.000365 0.0199 1 02/05/2024 20:59 WG2220500 1,1,1,2-Tetrachloroethane U 0.00151 0.00399 1 02/05/2024 20:59 WG2220500 1,1,2,2-Tetrachloroethane U 0.00111 0.00399 1 02/05/2024 20:59 WG2220500 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/16/24 11:51 7 of 89 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/19/24 20:18 7 of 89 SAMPLE RESULTS - 01 L1701794 SB-8 0-1 Collected date/time: 01/29/24 13:50 Volatile Organic Compounds (GC/MS) by Method 8260D Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time 1,1,2-Trichlorotrifluoroethane U 0.00120 0.00399 1 02/05/2024 20:59 WG2220500 Tetrachloroethene U 0.00143 0.00399 1 02/05/2024 20:59 WG2220500 Toluene U 0.00207 0.00797 1 02/05/2024 20:59 WG2220500 1,2,3-Trichlorobenzene U 0.0117 0.0199 1 02/05/2024 20:59 WG2220500 1,2,4-Trichlorobenzene U 0.00701 0.0199 1 02/05/2024 20:59 WG2220500 1,1,1-Trichloroethane U 0.00147 0.00399 1 02/05/2024 20:59 WG2220500 1,1,2-Trichloroethane U 0.000952 0.00399 1 02/05/2024 20:59 WG2220500 Trichloroethene U J4 0.000931 0.00159 1 02/05/2024 20:59 WG2220500 Trichlorofluoromethane U 0.00132 0.00399 1 02/05/2024 20:59 WG2220500 1,2,3-Trichloropropane U 0.00258 0.0199 1 02/05/2024 20:59 WG2220500 1,2,4-Trimethylbenzene U 0.00252 0.00797 1 02/05/2024 20:59 WG2220500 1,2,3-Trimethylbenzene U 0.00252 0.00797 1 02/05/2024 20:59 WG2220500 1,3,5-Trimethylbenzene U 0.00319 0.00797 1 02/05/2024 20:59 WG2220500 Vinyl chloride U 0.00185 0.00399 1 02/05/2024 20:59 WG2220500 Xylenes, Total U 0.00140 0.0104 1 02/05/2024 20:59 WG2220500 (S) Toluene-d8 104 75.0-131 02/05/2024 20:59 WG2220500 (S) 4-Bromofluorobenzene 98.1 67.0-138 02/05/2024 20:59 WG2220500 (S) 1,2-Dichloroethane-d4 114 70.0-130 02/05/2024 20:59 WG2220500 Semi Volatile Organic Compounds (GC/MS) by Method 8270E Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time Acenaphthene U 0.00678 0.0419 1 02/07/2024 08:17 WG2220589 Acenaphthylene U 0.00590 0.0419 1 02/07/2024 08:17 WG2220589 Anthracene U 0.00746 0.0419 1 02/07/2024 08:17 WG2220589 Benzidine U 0.0788 2.10 1 02/07/2024 08:17 WG2220589 Benzo(a)anthracene U 0.00739 0.0419 1 02/07/2024 08:17 WG2220589 Benzo(b)fluoranthene U 0.00781 0.0419 1 02/07/2024 08:17 WG2220589 Benzo(k)fluoranthene U 0.00745 0.0419 1 02/07/2024 08:17 WG2220589 Benzo(g,h,i)perylene U 0.00766 0.0419 1 02/07/2024 08:17 WG2220589 Benzo(a)pyrene U 0.00779 0.0419 1 02/07/2024 08:17 WG2220589 Bis(2-chlorethoxy)methane U 0.0126 0.419 1 02/07/2024 08:17 WG2220589 Bis(2-chloroethyl)ether U 0.0138 0.419 1 02/07/2024 08:17 WG2220589 2,2-Oxybis(1-Chloropropane)U 0.0181 0.419 1 02/07/2024 08:17 WG2220589 4-Bromophenyl-phenylether U 0.0147 0.419 1 02/07/2024 08:17 WG2220589 2-Chloronaphthalene U 0.00736 0.0419 1 02/07/2024 08:17 WG2220589 4-Chlorophenyl-phenylether U 0.0146 0.419 1 02/07/2024 08:17 WG2220589 Chrysene U 0.00833 0.0419 1 02/07/2024 08:17 WG2220589 Dibenz(a,h)anthracene U 0.0116 0.0419 1 02/07/2024 08:17 WG2220589 1,2-Dichlorobenzene U 0.0124 0.419 1 02/07/2024 08:17 WG2220589 1,3-Dichlorobenzene U 0.0127 0.419 1 02/07/2024 08:17 WG2220589 1,4-Dichlorobenzene U 0.0125 0.419 1 02/07/2024 08:17 WG2220589 3,3-Dichlorobenzidine U 0.0155 0.419 1 02/07/2024 08:17 WG2220589 2,4-Dinitrotoluene U 0.0120 0.419 1 02/07/2024 08:17 WG2220589 2,6-Dinitrotoluene U 0.0137 0.419 1 02/07/2024 08:17 WG2220589 Fluoranthene U 0.00756 0.0419 1 02/07/2024 08:17 WG2220589 Fluorene U 0.00682 0.0419 1 02/07/2024 08:17 WG2220589 Hexachlorobenzene U 0.0148 0.419 1 02/07/2024 08:17 WG2220589 Hexachloro-1,3-butadiene U 0.0141 0.419 1 02/07/2024 08:17 WG2220589 Hexachlorocyclopentadiene U 0.0220 0.419 1 02/07/2024 08:17 WG2220589 Hexachloroethane U 0.0165 0.419 1 02/07/2024 08:17 WG2220589 Indeno(1,2,3-cd)pyrene U 0.0118 0.0419 1 02/07/2024 08:17 WG2220589 Isophorone U 0.0128 0.419 1 02/07/2024 08:17 WG2220589 Naphthalene U 0.0105 0.0419 1 02/07/2024 08:17 WG2220589 Nitrobenzene U 0.0146 0.419 1 02/07/2024 08:17 WG2220589 n-Nitrosodimethylamine U 0.0622 0.419 1 02/07/2024 08:17 WG2220589 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/16/24 11:51 8 of 89 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/19/24 20:18 8 of 89 SAMPLE RESULTS - 01 L1701794 SB-8 0-1 Collected date/time: 01/29/24 13:50 Semi Volatile Organic Compounds (GC/MS) by Method 8270E Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time n-Nitrosodiphenylamine U 0.0317 0.419 1 02/07/2024 08:17 WG2220589 n-Nitrosodi-n-propylamine U 0.0140 0.419 1 02/07/2024 08:17 WG2220589 Phenanthrene U 0.00832 0.0419 1 02/07/2024 08:17 WG2220589 Benzylbutyl phthalate U 0.0131 0.419 1 02/07/2024 08:17 WG2220589 Bis(2-ethylhexyl)phthalate U 0.0531 0.419 1 02/07/2024 08:17 WG2220589 Di-n-butyl phthalate U 0.0143 0.419 1 02/07/2024 08:17 WG2220589 Diethyl phthalate U 0.0138 0.419 1 02/07/2024 08:17 WG2220589 Dimethyl phthalate U 0.0888 0.419 1 02/07/2024 08:17 WG2220589 Di-n-octyl phthalate U 0.0283 0.419 1 02/07/2024 08:17 WG2220589 Pyrene U 0.00815 0.0419 1 02/07/2024 08:17 WG2220589 1,2,4-Trichlorobenzene U 0.0131 0.419 1 02/07/2024 08:17 WG2220589 4-Chloro-3-methylphenol U 0.0136 0.419 1 02/07/2024 08:17 WG2220589 2-Chlorophenol U 0.0138 0.419 1 02/07/2024 08:17 WG2220589 2,4-Dichlorophenol U 0.0122 0.419 1 02/07/2024 08:17 WG2220589 2,4-Dimethylphenol U 0.0109 0.419 1 02/07/2024 08:17 WG2220589 4,6-Dinitro-2-methylphenol U 0.0950 0.419 1 02/07/2024 08:17 WG2220589 2,4-Dinitrophenol U 0.0980 0.419 1 02/07/2024 08:17 WG2220589 2-Nitrophenol U 0.0150 0.419 1 02/07/2024 08:17 WG2220589 4-Nitrophenol U 0.0131 0.419 1 02/07/2024 08:17 WG2220589 Pentachlorophenol U 0.0113 0.419 1 02/07/2024 08:17 WG2220589 Phenol U 0.0169 0.419 1 02/07/2024 08:17 WG2220589 2,4,6-Trichlorophenol U 0.0135 0.419 1 02/07/2024 08:17 WG2220589 (S) 2-Fluorophenol 64.3 12.0-120 02/07/2024 08:17 WG2220589 (S) Phenol-d5 58.7 10.0-120 02/07/2024 08:17 WG2220589 (S) Nitrobenzene-d5 62.2 10.0-122 02/07/2024 08:17 WG2220589 (S) 2-Fluorobiphenyl 58.9 15.0-120 02/07/2024 08:17 WG2220589 (S) 2,4,6-Tribromophenol 65.8 10.0-127 02/07/2024 08:17 WG2220589 (S) p-Terphenyl-d14 65.2 10.0-120 02/07/2024 08:17 WG2220589 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/16/24 11:51 9 of 89 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/19/24 20:18 9 of 89 SAMPLE RESULTS - 02 L1701794 SB-8 1-2 Collected date/time: 01/29/24 14:00 Total Solids by Method 2540 G-2011 Result Qualifier Dilution Analysis Batch Analyte %date / time Total Solids 82.8 1 02/06/2024 11:02 WG2219977 Volatile Organic Compounds (GC/MS) by Method 8260D Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time Acetone U 0.0540 0.0739 1 02/05/2024 21:31 WG2220500 Acrylonitrile U 0.00534 0.0185 1 02/05/2024 21:31 WG2220500 Benzene U 0.000691 0.00148 1 02/05/2024 21:31 WG2220500 Bromobenzene U 0.00133 0.0185 1 02/05/2024 21:31 WG2220500 Bromodichloromethane U 0.00107 0.00370 1 02/05/2024 21:31 WG2220500 Bromoform U 0.00173 0.0370 1 02/05/2024 21:31 WG2220500 Bromomethane U 0.00291 0.0185 1 02/05/2024 21:31 WG2220500 n-Butylbenzene U 0.00776 0.0185 1 02/05/2024 21:31 WG2220500 sec-Butylbenzene U 0.00426 0.0185 1 02/05/2024 21:31 WG2220500 tert-Butylbenzene U 0.00288 0.00739 1 02/05/2024 21:31 WG2220500 Carbon tetrachloride U 0.00133 0.00739 1 02/05/2024 21:31 WG2220500 Chlorobenzene U 0.000311 0.00370 1 02/05/2024 21:31 WG2220500 Chlorodibromomethane U 0.000905 0.00370 1 02/05/2024 21:31 WG2220500 Chloroethane U 0.00251 0.00739 1 02/05/2024 21:31 WG2220500 Chloroform 0.00243 B J 0.00152 0.00370 1 02/05/2024 21:31 WG2220500 Chloromethane U 0.00643 0.0185 1 02/05/2024 21:31 WG2220500 2-Chlorotoluene U 0.00128 0.00370 1 02/05/2024 21:31 WG2220500 4-Chlorotoluene U 0.000666 0.00739 1 02/05/2024 21:31 WG2220500 1,2-Dibromo-3-Chloropropane U 0.00577 0.0370 1 02/05/2024 21:31 WG2220500 1,2-Dibromoethane U 0.000958 0.00370 1 02/05/2024 21:31 WG2220500 Dibromomethane U 0.00111 0.00739 1 02/05/2024 21:31 WG2220500 1,2-Dichlorobenzene U 0.000629 0.00739 1 02/05/2024 21:31 WG2220500 1,3-Dichlorobenzene U 0.000887 0.00739 1 02/05/2024 21:31 WG2220500 1,4-Dichlorobenzene U 0.00104 0.00739 1 02/05/2024 21:31 WG2220500 Dichlorodifluoromethane U 0.00238 0.00739 1 02/05/2024 21:31 WG2220500 1,1-Dichloroethane U 0.000726 0.00370 1 02/05/2024 21:31 WG2220500 1,2-Dichloroethane U 0.000960 0.00370 1 02/05/2024 21:31 WG2220500 1,1-Dichloroethene U 0.000896 0.00370 1 02/05/2024 21:31 WG2220500 cis-1,2-Dichloroethene U 0.00109 0.00370 1 02/05/2024 21:31 WG2220500 trans-1,2-Dichloroethene U 0.00154 0.00739 1 02/05/2024 21:31 WG2220500 1,2-Dichloropropane U 0.00210 0.00739 1 02/05/2024 21:31 WG2220500 1,1-Dichloropropene U 0.00120 0.00370 1 02/05/2024 21:31 WG2220500 1,3-Dichloropropane U 0.000741 0.00739 1 02/05/2024 21:31 WG2220500 cis-1,3-Dichloropropene U 0.00112 0.00370 1 02/05/2024 21:31 WG2220500 trans-1,3-Dichloropropene U 0.00169 0.00739 1 02/05/2024 21:31 WG2220500 2,2-Dichloropropane U 0.00204 0.00370 1 02/05/2024 21:31 WG2220500 Di-isopropyl ether U 0.000606 0.00148 1 02/05/2024 21:31 WG2220500 Ethylbenzene U 0.00109 0.00370 1 02/05/2024 21:31 WG2220500 Hexachloro-1,3-butadiene U 0.00887 0.0370 1 02/05/2024 21:31 WG2220500 Isopropylbenzene U 0.000629 0.00370 1 02/05/2024 21:31 WG2220500 p-Isopropyltoluene U 0.00377 0.00739 1 02/05/2024 21:31 WG2220500 2-Butanone (MEK)U 0.0939 0.148 1 02/05/2024 21:31 WG2220500 Methylene Chloride 0.00982 J 0.00982 0.0370 1 02/05/2024 21:31 WG2220500 4-Methyl-2-pentanone (MIBK)U 0.00337 0.0370 1 02/05/2024 21:31 WG2220500 Methyl tert-butyl ether U 0.000518 0.00148 1 02/05/2024 21:31 WG2220500 Naphthalene U C3 0.00722 0.0185 1 02/05/2024 21:31 WG2220500 n-Propylbenzene U 0.00140 0.00739 1 02/05/2024 21:31 WG2220500 Styrene U 0.000339 0.0185 1 02/05/2024 21:31 WG2220500 1,1,1,2-Tetrachloroethane U 0.00140 0.00370 1 02/05/2024 21:31 WG2220500 1,1,2,2-Tetrachloroethane U 0.00103 0.00370 1 02/05/2024 21:31 WG2220500 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/16/24 11:51 10 of 89 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/19/24 20:18 10 of 89 SAMPLE RESULTS - 02 L1701794 SB-8 1-2 Collected date/time: 01/29/24 14:00 Volatile Organic Compounds (GC/MS) by Method 8260D Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time 1,1,2-Trichlorotrifluoroethane U 0.00112 0.00370 1 02/05/2024 21:31 WG2220500 Tetrachloroethene 0.00210 J 0.00133 0.00370 1 02/05/2024 21:31 WG2220500 Toluene U 0.00192 0.00739 1 02/05/2024 21:31 WG2220500 1,2,3-Trichlorobenzene U 0.0108 0.0185 1 02/05/2024 21:31 WG2220500 1,2,4-Trichlorobenzene U 0.00651 0.0185 1 02/05/2024 21:31 WG2220500 1,1,1-Trichloroethane U 0.00137 0.00370 1 02/05/2024 21:31 WG2220500 1,1,2-Trichloroethane U 0.000883 0.00370 1 02/05/2024 21:31 WG2220500 Trichloroethene U J4 0.000864 0.00148 1 02/05/2024 21:31 WG2220500 Trichlorofluoromethane U 0.00122 0.00370 1 02/05/2024 21:31 WG2220500 1,2,3-Trichloropropane U 0.00240 0.0185 1 02/05/2024 21:31 WG2220500 1,2,4-Trimethylbenzene U 0.00234 0.00739 1 02/05/2024 21:31 WG2220500 1,2,3-Trimethylbenzene U 0.00234 0.00739 1 02/05/2024 21:31 WG2220500 1,3,5-Trimethylbenzene U 0.00296 0.00739 1 02/05/2024 21:31 WG2220500 Vinyl chloride U 0.00172 0.00370 1 02/05/2024 21:31 WG2220500 Xylenes, Total U 0.00130 0.00961 1 02/05/2024 21:31 WG2220500 (S) Toluene-d8 103 75.0-131 02/05/2024 21:31 WG2220500 (S) 4-Bromofluorobenzene 97.8 67.0-138 02/05/2024 21:31 WG2220500 (S) 1,2-Dichloroethane-d4 113 70.0-130 02/05/2024 21:31 WG2220500 Semi Volatile Organic Compounds (GC/MS) by Method 8270E Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time Acenaphthene U 0.00651 0.0402 1 02/09/2024 04:28 WG2221334 Acenaphthylene U 0.00567 0.0402 1 02/09/2024 04:28 WG2221334 Anthracene U 0.00717 0.0402 1 02/09/2024 04:28 WG2221334 Benzidine U 0.0756 2.02 1 02/09/2024 04:28 WG2221334 Benzo(a)anthracene U 0.00709 0.0402 1 02/09/2024 04:28 WG2221334 Benzo(b)fluoranthene U 0.00750 0.0402 1 02/09/2024 04:28 WG2221334 Benzo(k)fluoranthene U 0.00715 0.0402 1 02/09/2024 04:28 WG2221334 Benzo(g,h,i)perylene U 0.00736 0.0402 1 02/09/2024 04:28 WG2221334 Benzo(a)pyrene U 0.00748 0.0402 1 02/09/2024 04:28 WG2221334 Bis(2-chlorethoxy)methane U 0.0121 0.402 1 02/09/2024 04:28 WG2221334 Bis(2-chloroethyl)ether U 0.0133 0.402 1 02/09/2024 04:28 WG2221334 2,2-Oxybis(1-Chloropropane)U 0.0174 0.402 1 02/09/2024 04:28 WG2221334 4-Bromophenyl-phenylether U 0.0141 0.402 1 02/09/2024 04:28 WG2221334 2-Chloronaphthalene U 0.00707 0.0402 1 02/09/2024 04:28 WG2221334 4-Chlorophenyl-phenylether U 0.0140 0.402 1 02/09/2024 04:28 WG2221334 Chrysene U 0.00800 0.0402 1 02/09/2024 04:28 WG2221334 Dibenz(a,h)anthracene U 0.0112 0.0402 1 02/09/2024 04:28 WG2221334 1,2-Dichlorobenzene U 0.0119 0.402 1 02/09/2024 04:28 WG2221334 1,3-Dichlorobenzene U 0.0122 0.402 1 02/09/2024 04:28 WG2221334 1,4-Dichlorobenzene U 0.0120 0.402 1 02/09/2024 04:28 WG2221334 3,3-Dichlorobenzidine U 0.0149 0.402 1 02/09/2024 04:28 WG2221334 2,4-Dinitrotoluene U 0.0115 0.402 1 02/09/2024 04:28 WG2221334 2,6-Dinitrotoluene U 0.0132 0.402 1 02/09/2024 04:28 WG2221334 Fluoranthene U 0.00726 0.0402 1 02/09/2024 04:28 WG2221334 Fluorene U 0.00655 0.0402 1 02/09/2024 04:28 WG2221334 Hexachlorobenzene U 0.0143 0.402 1 02/09/2024 04:28 WG2221334 Hexachloro-1,3-butadiene U 0.0135 0.402 1 02/09/2024 04:28 WG2221334 Hexachlorocyclopentadiene U 0.0211 0.402 1 02/09/2024 04:28 WG2221334 Hexachloroethane U 0.0158 0.402 1 02/09/2024 04:28 WG2221334 Indeno(1,2,3-cd)pyrene U 0.0114 0.0402 1 02/09/2024 04:28 WG2221334 Isophorone U 0.0123 0.402 1 02/09/2024 04:28 WG2221334 Naphthalene U 0.0101 0.0402 1 02/09/2024 04:28 WG2221334 Nitrobenzene U 0.0140 0.402 1 02/09/2024 04:28 WG2221334 n-Nitrosodimethylamine U 0.0597 0.402 1 02/09/2024 04:28 WG2221334 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/16/24 11:51 11 of 89 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/19/24 20:18 11 of 89 SAMPLE RESULTS - 02 L1701794 SB-8 1-2 Collected date/time: 01/29/24 14:00 Semi Volatile Organic Compounds (GC/MS) by Method 8270E Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time n-Nitrosodiphenylamine U 0.0305 0.402 1 02/09/2024 04:28 WG2221334 n-Nitrosodi-n-propylamine U 0.0134 0.402 1 02/09/2024 04:28 WG2221334 Phenanthrene U 0.00799 0.0402 1 02/09/2024 04:28 WG2221334 Benzylbutyl phthalate U 0.0126 0.402 1 02/09/2024 04:28 WG2221334 Bis(2-ethylhexyl)phthalate U 0.0510 0.402 1 02/09/2024 04:28 WG2221334 Di-n-butyl phthalate U 0.0138 0.402 1 02/09/2024 04:28 WG2221334 Diethyl phthalate U 0.0133 0.402 1 02/09/2024 04:28 WG2221334 Dimethyl phthalate U 0.0853 0.402 1 02/09/2024 04:28 WG2221334 Di-n-octyl phthalate U 0.0272 0.402 1 02/09/2024 04:28 WG2221334 Pyrene U 0.00783 0.0402 1 02/09/2024 04:28 WG2221334 1,2,4-Trichlorobenzene U 0.0126 0.402 1 02/09/2024 04:28 WG2221334 4-Chloro-3-methylphenol U 0.0131 0.402 1 02/09/2024 04:28 WG2221334 2-Chlorophenol U 0.0133 0.402 1 02/09/2024 04:28 WG2221334 2,4-Dichlorophenol U 0.0117 0.402 1 02/09/2024 04:28 WG2221334 2,4-Dimethylphenol U 0.0105 0.402 1 02/09/2024 04:28 WG2221334 4,6-Dinitro-2-methylphenol U 0.0912 0.402 1 02/09/2024 04:28 WG2221334 2,4-Dinitrophenol U 0.0941 0.402 1 02/09/2024 04:28 WG2221334 2-Nitrophenol U 0.0144 0.402 1 02/09/2024 04:28 WG2221334 4-Nitrophenol U 0.0126 0.402 1 02/09/2024 04:28 WG2221334 Pentachlorophenol U 0.0108 0.402 1 02/09/2024 04:28 WG2221334 Phenol U 0.0162 0.402 1 02/09/2024 04:28 WG2221334 2,4,6-Trichlorophenol U 0.0129 0.402 1 02/09/2024 04:28 WG2221334 (S) 2-Fluorophenol 67.8 12.0-120 02/09/2024 04:28 WG2221334 (S) Phenol-d5 62.1 10.0-120 02/09/2024 04:28 WG2221334 (S) Nitrobenzene-d5 66.2 10.0-122 02/09/2024 04:28 WG2221334 (S) 2-Fluorobiphenyl 64.4 15.0-120 02/09/2024 04:28 WG2221334 (S) 2,4,6-Tribromophenol 75.7 10.0-127 02/09/2024 04:28 WG2221334 (S) p-Terphenyl-d14 73.1 10.0-120 02/09/2024 04:28 WG2221334 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/16/24 11:51 12 of 89 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/19/24 20:18 12 of 89 SAMPLE RESULTS - 03 L1701794 SB-7 (0-1) Collected date/time: 01/29/24 14:35 Total Solids by Method 2540 G-2011 Result Qualifier Dilution Analysis Batch Analyte %date / time Total Solids 81.4 1 02/06/2024 11:02 WG2219977 Volatile Organic Compounds (GC/MS) by Method 8260D Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time Acetone U 0.0550 0.0754 1 02/05/2024 21:50 WG2220500 Acrylonitrile U 0.00544 0.0188 1 02/05/2024 21:50 WG2220500 Benzene U 0.000704 0.00151 1 02/05/2024 21:50 WG2220500 Bromobenzene U 0.00136 0.0188 1 02/05/2024 21:50 WG2220500 Bromodichloromethane U 0.00109 0.00377 1 02/05/2024 21:50 WG2220500 Bromoform U 0.00176 0.0377 1 02/05/2024 21:50 WG2220500 Bromomethane U 0.00297 0.0188 1 02/05/2024 21:50 WG2220500 n-Butylbenzene U 0.00791 0.0188 1 02/05/2024 21:50 WG2220500 sec-Butylbenzene U 0.00434 0.0188 1 02/05/2024 21:50 WG2220500 tert-Butylbenzene U 0.00294 0.00754 1 02/05/2024 21:50 WG2220500 Carbon tetrachloride U 0.00135 0.00754 1 02/05/2024 21:50 WG2220500 Chlorobenzene U 0.000317 0.00377 1 02/05/2024 21:50 WG2220500 Chlorodibromomethane U 0.000922 0.00377 1 02/05/2024 21:50 WG2220500 Chloroethane U 0.00256 0.00754 1 02/05/2024 21:50 WG2220500 Chloroform 0.00356 B J 0.00155 0.00377 1 02/05/2024 21:50 WG2220500 Chloromethane U 0.00656 0.0188 1 02/05/2024 21:50 WG2220500 2-Chlorotoluene U 0.00130 0.00377 1 02/05/2024 21:50 WG2220500 4-Chlorotoluene U 0.000678 0.00754 1 02/05/2024 21:50 WG2220500 1,2-Dibromo-3-Chloropropane U 0.00588 0.0377 1 02/05/2024 21:50 WG2220500 1,2-Dibromoethane U 0.000977 0.00377 1 02/05/2024 21:50 WG2220500 Dibromomethane U 0.00113 0.00754 1 02/05/2024 21:50 WG2220500 1,2-Dichlorobenzene U 0.000641 0.00754 1 02/05/2024 21:50 WG2220500 1,3-Dichlorobenzene U 0.000904 0.00754 1 02/05/2024 21:50 WG2220500 1,4-Dichlorobenzene U 0.00106 0.00754 1 02/05/2024 21:50 WG2220500 Dichlorodifluoromethane U 0.00243 0.00754 1 02/05/2024 21:50 WG2220500 1,1-Dichloroethane U 0.000740 0.00377 1 02/05/2024 21:50 WG2220500 1,2-Dichloroethane U 0.000978 0.00377 1 02/05/2024 21:50 WG2220500 1,1-Dichloroethene U 0.000913 0.00377 1 02/05/2024 21:50 WG2220500 cis-1,2-Dichloroethene U 0.00111 0.00377 1 02/05/2024 21:50 WG2220500 trans-1,2-Dichloroethene U 0.00157 0.00754 1 02/05/2024 21:50 WG2220500 1,2-Dichloropropane U 0.00214 0.00754 1 02/05/2024 21:50 WG2220500 1,1-Dichloropropene U 0.00122 0.00377 1 02/05/2024 21:50 WG2220500 1,3-Dichloropropane U 0.000755 0.00754 1 02/05/2024 21:50 WG2220500 cis-1,3-Dichloropropene U 0.00114 0.00377 1 02/05/2024 21:50 WG2220500 trans-1,3-Dichloropropene U 0.00172 0.00754 1 02/05/2024 21:50 WG2220500 2,2-Dichloropropane U 0.00208 0.00377 1 02/05/2024 21:50 WG2220500 Di-isopropyl ether U 0.000618 0.00151 1 02/05/2024 21:50 WG2220500 Ethylbenzene U 0.00111 0.00377 1 02/05/2024 21:50 WG2220500 Hexachloro-1,3-butadiene U 0.00904 0.0377 1 02/05/2024 21:50 WG2220500 Isopropylbenzene U 0.000641 0.00377 1 02/05/2024 21:50 WG2220500 p-Isopropyltoluene U 0.00384 0.00754 1 02/05/2024 21:50 WG2220500 2-Butanone (MEK)U 0.0957 0.151 1 02/05/2024 21:50 WG2220500 Methylene Chloride 0.0133 B J 0.0100 0.0377 1 02/05/2024 21:50 WG2220500 4-Methyl-2-pentanone (MIBK)U 0.00344 0.0377 1 02/05/2024 21:50 WG2220500 Methyl tert-butyl ether U 0.000528 0.00151 1 02/05/2024 21:50 WG2220500 Naphthalene U C3 0.00736 0.0188 1 02/05/2024 21:50 WG2220500 n-Propylbenzene U 0.00143 0.00754 1 02/05/2024 21:50 WG2220500 Styrene U 0.000345 0.0188 1 02/05/2024 21:50 WG2220500 1,1,1,2-Tetrachloroethane U 0.00143 0.00377 1 02/05/2024 21:50 WG2220500 1,1,2,2-Tetrachloroethane U 0.00105 0.00377 1 02/05/2024 21:50 WG2220500 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/16/24 11:51 13 of 89 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/19/24 20:18 13 of 89 SAMPLE RESULTS - 03 L1701794 SB-7 (0-1) Collected date/time: 01/29/24 14:35 Volatile Organic Compounds (GC/MS) by Method 8260D Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time 1,1,2-Trichlorotrifluoroethane U 0.00114 0.00377 1 02/05/2024 21:50 WG2220500 Tetrachloroethene 0.141 0.00135 0.00377 1 02/05/2024 21:50 WG2220500 Toluene U 0.00196 0.00754 1 02/05/2024 21:50 WG2220500 1,2,3-Trichlorobenzene U 0.0110 0.0188 1 02/05/2024 21:50 WG2220500 1,2,4-Trichlorobenzene U 0.00663 0.0188 1 02/05/2024 21:50 WG2220500 1,1,1-Trichloroethane U 0.00139 0.00377 1 02/05/2024 21:50 WG2220500 1,1,2-Trichloroethane U 0.000900 0.00377 1 02/05/2024 21:50 WG2220500 Trichloroethene U J4 0.000880 0.00151 1 02/05/2024 21:50 WG2220500 Trichlorofluoromethane U 0.00125 0.00377 1 02/05/2024 21:50 WG2220500 1,2,3-Trichloropropane U 0.00244 0.0188 1 02/05/2024 21:50 WG2220500 1,2,4-Trimethylbenzene U 0.00238 0.00754 1 02/05/2024 21:50 WG2220500 1,2,3-Trimethylbenzene U 0.00238 0.00754 1 02/05/2024 21:50 WG2220500 1,3,5-Trimethylbenzene U 0.00301 0.00754 1 02/05/2024 21:50 WG2220500 Vinyl chloride U 0.00175 0.00377 1 02/05/2024 21:50 WG2220500 Xylenes, Total U 0.00133 0.00980 1 02/05/2024 21:50 WG2220500 (S) Toluene-d8 105 75.0-131 02/05/2024 21:50 WG2220500 (S) 4-Bromofluorobenzene 97.5 67.0-138 02/05/2024 21:50 WG2220500 (S) 1,2-Dichloroethane-d4 118 70.0-130 02/05/2024 21:50 WG2220500 Semi Volatile Organic Compounds (GC/MS) by Method 8270E Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time Acenaphthene U 0.00663 0.0409 1 02/08/2024 19:42 WG2220590 Acenaphthylene U 0.00576 0.0409 1 02/08/2024 19:42 WG2220590 Anthracene U 0.00729 0.0409 1 02/08/2024 19:42 WG2220590 Benzidine U 0.0769 2.05 1 02/08/2024 19:42 WG2220590 Benzo(a)anthracene U 0.00722 0.0409 1 02/08/2024 19:42 WG2220590 Benzo(b)fluoranthene U 0.00763 0.0409 1 02/08/2024 19:42 WG2220590 Benzo(k)fluoranthene U 0.00728 0.0409 1 02/08/2024 19:42 WG2220590 Benzo(g,h,i)perylene U 0.00749 0.0409 1 02/08/2024 19:42 WG2220590 Benzo(a)pyrene U 0.00761 0.0409 1 02/08/2024 19:42 WG2220590 Bis(2-chlorethoxy)methane U 0.0123 0.409 1 02/08/2024 19:42 WG2220590 Bis(2-chloroethyl)ether U 0.0135 0.409 1 02/08/2024 19:42 WG2220590 2,2-Oxybis(1-Chloropropane)U 0.0177 0.409 1 02/08/2024 19:42 WG2220590 4-Bromophenyl-phenylether U 0.0144 0.409 1 02/08/2024 19:42 WG2220590 2-Chloronaphthalene U 0.00719 0.0409 1 02/08/2024 19:42 WG2220590 4-Chlorophenyl-phenylether U 0.0143 0.409 1 02/08/2024 19:42 WG2220590 Chrysene U 0.00814 0.0409 1 02/08/2024 19:42 WG2220590 Dibenz(a,h)anthracene U 0.0113 0.0409 1 02/08/2024 19:42 WG2220590 1,2-Dichlorobenzene U 0.0121 0.409 1 02/08/2024 19:42 WG2220590 1,3-Dichlorobenzene U 0.0124 0.409 1 02/08/2024 19:42 WG2220590 1,4-Dichlorobenzene U 0.0122 0.409 1 02/08/2024 19:42 WG2220590 3,3-Dichlorobenzidine U 0.0151 0.409 1 02/08/2024 19:42 WG2220590 2,4-Dinitrotoluene U 0.0117 0.409 1 02/08/2024 19:42 WG2220590 2,6-Dinitrotoluene U 0.0134 0.409 1 02/08/2024 19:42 WG2220590 Fluoranthene U 0.00739 0.0409 1 02/08/2024 19:42 WG2220590 Fluorene U 0.00666 0.0409 1 02/08/2024 19:42 WG2220590 Hexachlorobenzene U 0.0145 0.409 1 02/08/2024 19:42 WG2220590 Hexachloro-1,3-butadiene U 0.0138 0.409 1 02/08/2024 19:42 WG2220590 Hexachlorocyclopentadiene U 0.0215 0.409 1 02/08/2024 19:42 WG2220590 Hexachloroethane U 0.0161 0.409 1 02/08/2024 19:42 WG2220590 Indeno(1,2,3-cd)pyrene U 0.0116 0.0409 1 02/08/2024 19:42 WG2220590 Isophorone U 0.0125 0.409 1 02/08/2024 19:42 WG2220590 Naphthalene U 0.0103 0.0409 1 02/08/2024 19:42 WG2220590 Nitrobenzene U 0.0143 0.409 1 02/08/2024 19:42 WG2220590 n-Nitrosodimethylamine U 0.0607 0.409 1 02/08/2024 19:42 WG2220590 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/16/24 11:51 14 of 89 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/19/24 20:18 14 of 89 SAMPLE RESULTS - 03 L1701794 SB-7 (0-1) Collected date/time: 01/29/24 14:35 Semi Volatile Organic Compounds (GC/MS) by Method 8270E Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time n-Nitrosodiphenylamine U 0.0310 0.409 1 02/08/2024 19:42 WG2220590 n-Nitrosodi-n-propylamine U 0.0136 0.409 1 02/08/2024 19:42 WG2220590 Phenanthrene U 0.00812 0.0409 1 02/08/2024 19:42 WG2220590 Benzylbutyl phthalate U 0.0128 0.409 1 02/08/2024 19:42 WG2220590 Bis(2-ethylhexyl)phthalate U 0.0519 0.409 1 02/08/2024 19:42 WG2220590 Di-n-butyl phthalate U 0.0140 0.409 1 02/08/2024 19:42 WG2220590 Diethyl phthalate U 0.0135 0.409 1 02/08/2024 19:42 WG2220590 Dimethyl phthalate U 0.0868 0.409 1 02/08/2024 19:42 WG2220590 Di-n-octyl phthalate U 0.0277 0.409 1 02/08/2024 19:42 WG2220590 Pyrene U 0.00797 0.0409 1 02/08/2024 19:42 WG2220590 1,2,4-Trichlorobenzene U 0.0128 0.409 1 02/08/2024 19:42 WG2220590 4-Chloro-3-methylphenol U 0.0133 0.409 1 02/08/2024 19:42 WG2220590 2-Chlorophenol U 0.0135 0.409 1 02/08/2024 19:42 WG2220590 2,4-Dichlorophenol U 0.0119 0.409 1 02/08/2024 19:42 WG2220590 2,4-Dimethylphenol U 0.0107 0.409 1 02/08/2024 19:42 WG2220590 4,6-Dinitro-2-methylphenol U 0.0928 0.409 1 02/08/2024 19:42 WG2220590 2,4-Dinitrophenol U 0.0958 0.409 1 02/08/2024 19:42 WG2220590 2-Nitrophenol U 0.0146 0.409 1 02/08/2024 19:42 WG2220590 4-Nitrophenol U 0.0128 0.409 1 02/08/2024 19:42 WG2220590 Pentachlorophenol U 0.0110 0.409 1 02/08/2024 19:42 WG2220590 Phenol U 0.0165 0.409 1 02/08/2024 19:42 WG2220590 2,4,6-Trichlorophenol U 0.0132 0.409 1 02/08/2024 19:42 WG2220590 (S) 2-Fluorophenol 70.0 12.0-120 02/08/2024 19:42 WG2220590 (S) Phenol-d5 72.2 10.0-120 02/08/2024 19:42 WG2220590 (S) Nitrobenzene-d5 64.1 10.0-122 02/08/2024 19:42 WG2220590 (S) 2-Fluorobiphenyl 69.8 15.0-120 02/08/2024 19:42 WG2220590 (S) 2,4,6-Tribromophenol 67.6 10.0-127 02/08/2024 19:42 WG2220590 (S) p-Terphenyl-d14 75.9 10.0-120 02/08/2024 19:42 WG2220590 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/16/24 11:51 15 of 89 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/19/24 20:18 15 of 89 SAMPLE RESULTS - 04 L1701794 SB-7 (3-4) Collected date/time: 01/29/24 14:35 Total Solids by Method 2540 G-2011 Result Qualifier Dilution Analysis Batch Analyte %date / time Total Solids 71.0 1 02/06/2024 11:02 WG2219977 Volatile Organic Compounds (GC/MS) by Method 8260D Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time Acetone U 0.0673 0.0921 1 02/05/2024 22:08 WG2220500 Acrylonitrile U 0.00665 0.0230 1 02/05/2024 22:08 WG2220500 Benzene U 0.000861 0.00184 1 02/05/2024 22:08 WG2220500 Bromobenzene U 0.00166 0.0230 1 02/05/2024 22:08 WG2220500 Bromodichloromethane U 0.00134 0.00461 1 02/05/2024 22:08 WG2220500 Bromoform U 0.00216 0.0461 1 02/05/2024 22:08 WG2220500 Bromomethane U 0.00363 0.0230 1 02/05/2024 22:08 WG2220500 n-Butylbenzene U 0.00968 0.0230 1 02/05/2024 22:08 WG2220500 sec-Butylbenzene U 0.00531 0.0230 1 02/05/2024 22:08 WG2220500 tert-Butylbenzene U 0.00359 0.00921 1 02/05/2024 22:08 WG2220500 Carbon tetrachloride U 0.00165 0.00921 1 02/05/2024 22:08 WG2220500 Chlorobenzene U 0.000387 0.00461 1 02/05/2024 22:08 WG2220500 Chlorodibromomethane U 0.00113 0.00461 1 02/05/2024 22:08 WG2220500 Chloroethane U 0.00313 0.00921 1 02/05/2024 22:08 WG2220500 Chloroform 0.00507 B 0.00190 0.00461 1 02/05/2024 22:08 WG2220500 Chloromethane U 0.00802 0.0230 1 02/05/2024 22:08 WG2220500 2-Chlorotoluene U 0.00159 0.00461 1 02/05/2024 22:08 WG2220500 4-Chlorotoluene U 0.000829 0.00921 1 02/05/2024 22:08 WG2220500 1,2-Dibromo-3-Chloropropane U 0.00719 0.0461 1 02/05/2024 22:08 WG2220500 1,2-Dibromoethane U 0.00119 0.00461 1 02/05/2024 22:08 WG2220500 Dibromomethane U 0.00138 0.00921 1 02/05/2024 22:08 WG2220500 1,2-Dichlorobenzene U 0.000783 0.00921 1 02/05/2024 22:08 WG2220500 1,3-Dichlorobenzene U 0.00111 0.00921 1 02/05/2024 22:08 WG2220500 1,4-Dichlorobenzene U 0.00129 0.00921 1 02/05/2024 22:08 WG2220500 Dichlorodifluoromethane U 0.00297 0.00921 1 02/05/2024 22:08 WG2220500 1,1-Dichloroethane U 0.000905 0.00461 1 02/05/2024 22:08 WG2220500 1,2-Dichloroethane U 0.00120 0.00461 1 02/05/2024 22:08 WG2220500 1,1-Dichloroethene U 0.00112 0.00461 1 02/05/2024 22:08 WG2220500 cis-1,2-Dichloroethene U 0.00135 0.00461 1 02/05/2024 22:08 WG2220500 trans-1,2-Dichloroethene U 0.00192 0.00921 1 02/05/2024 22:08 WG2220500 1,2-Dichloropropane U 0.00262 0.00921 1 02/05/2024 22:08 WG2220500 1,1-Dichloropropene U 0.00149 0.00461 1 02/05/2024 22:08 WG2220500 1,3-Dichloropropane U 0.000923 0.00921 1 02/05/2024 22:08 WG2220500 cis-1,3-Dichloropropene U 0.00140 0.00461 1 02/05/2024 22:08 WG2220500 trans-1,3-Dichloropropene U 0.00210 0.00921 1 02/05/2024 22:08 WG2220500 2,2-Dichloropropane U 0.00254 0.00461 1 02/05/2024 22:08 WG2220500 Di-isopropyl ether U 0.000756 0.00184 1 02/05/2024 22:08 WG2220500 Ethylbenzene U 0.00136 0.00461 1 02/05/2024 22:08 WG2220500 Hexachloro-1,3-butadiene U 0.0111 0.0461 1 02/05/2024 22:08 WG2220500 Isopropylbenzene U 0.000783 0.00461 1 02/05/2024 22:08 WG2220500 p-Isopropyltoluene U 0.00470 0.00921 1 02/05/2024 22:08 WG2220500 2-Butanone (MEK)U 0.117 0.184 1 02/05/2024 22:08 WG2220500 Methylene Chloride 0.0194 B J 0.0122 0.0461 1 02/05/2024 22:08 WG2220500 4-Methyl-2-pentanone (MIBK)U 0.00420 0.0461 1 02/05/2024 22:08 WG2220500 Methyl tert-butyl ether U 0.000645 0.00184 1 02/05/2024 22:08 WG2220500 Naphthalene U C3 0.00899 0.0230 1 02/05/2024 22:08 WG2220500 n-Propylbenzene U 0.00175 0.00921 1 02/05/2024 22:08 WG2220500 Styrene U 0.000422 0.0230 1 02/05/2024 22:08 WG2220500 1,1,1,2-Tetrachloroethane U 0.00175 0.00461 1 02/05/2024 22:08 WG2220500 1,1,2,2-Tetrachloroethane U 0.00128 0.00461 1 02/05/2024 22:08 WG2220500 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/16/24 11:51 16 of 89 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/19/24 20:18 16 of 89 SAMPLE RESULTS - 04 L1701794 SB-7 (3-4) Collected date/time: 01/29/24 14:35 Volatile Organic Compounds (GC/MS) by Method 8260D Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time 1,1,2-Trichlorotrifluoroethane U 0.00139 0.00461 1 02/05/2024 22:08 WG2220500 Tetrachloroethene U 0.00165 0.00461 1 02/05/2024 22:08 WG2220500 Toluene U 0.00240 0.00921 1 02/05/2024 22:08 WG2220500 1,2,3-Trichlorobenzene U 0.0135 0.0230 1 02/05/2024 22:08 WG2220500 1,2,4-Trichlorobenzene U 0.00811 0.0230 1 02/05/2024 22:08 WG2220500 1,1,1-Trichloroethane U 0.00170 0.00461 1 02/05/2024 22:08 WG2220500 1,1,2-Trichloroethane U 0.00110 0.00461 1 02/05/2024 22:08 WG2220500 Trichloroethene U J4 0.00108 0.00184 1 02/05/2024 22:08 WG2220500 Trichlorofluoromethane U 0.00152 0.00461 1 02/05/2024 22:08 WG2220500 1,2,3-Trichloropropane U 0.00299 0.0230 1 02/05/2024 22:08 WG2220500 1,2,4-Trimethylbenzene U 0.00291 0.00921 1 02/05/2024 22:08 WG2220500 1,2,3-Trimethylbenzene U 0.00291 0.00921 1 02/05/2024 22:08 WG2220500 1,3,5-Trimethylbenzene U 0.00369 0.00921 1 02/05/2024 22:08 WG2220500 Vinyl chloride U 0.00214 0.00461 1 02/05/2024 22:08 WG2220500 Xylenes, Total U 0.00162 0.0120 1 02/05/2024 22:08 WG2220500 (S) Toluene-d8 105 75.0-131 02/05/2024 22:08 WG2220500 (S) 4-Bromofluorobenzene 97.6 67.0-138 02/05/2024 22:08 WG2220500 (S) 1,2-Dichloroethane-d4 116 70.0-130 02/05/2024 22:08 WG2220500 Semi Volatile Organic Compounds (GC/MS) by Method 8270E Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time Acenaphthene U 0.00759 0.0469 1 02/08/2024 18:20 WG2220590 Acenaphthylene U 0.00660 0.0469 1 02/08/2024 18:20 WG2220590 Anthracene U 0.00835 0.0469 1 02/08/2024 18:20 WG2220590 Benzidine U 0.0881 2.35 1 02/08/2024 18:20 WG2220590 Benzo(a)anthracene U 0.00826 0.0469 1 02/08/2024 18:20 WG2220590 Benzo(b)fluoranthene U 0.00874 0.0469 1 02/08/2024 18:20 WG2220590 Benzo(k)fluoranthene U 0.00833 0.0469 1 02/08/2024 18:20 WG2220590 Benzo(g,h,i)perylene U 0.00857 0.0469 1 02/08/2024 18:20 WG2220590 Benzo(a)pyrene U 0.00871 0.0469 1 02/08/2024 18:20 WG2220590 Bis(2-chlorethoxy)methane U 0.0141 0.469 1 02/08/2024 18:20 WG2220590 Bis(2-chloroethyl)ether U 0.0155 0.469 1 02/08/2024 18:20 WG2220590 2,2-Oxybis(1-Chloropropane)U 0.0203 0.469 1 02/08/2024 18:20 WG2220590 4-Bromophenyl-phenylether U 0.0165 0.469 1 02/08/2024 18:20 WG2220590 2-Chloronaphthalene U 0.00824 0.0469 1 02/08/2024 18:20 WG2220590 4-Chlorophenyl-phenylether U 0.0163 0.469 1 02/08/2024 18:20 WG2220590 Chrysene U 0.00932 0.0469 1 02/08/2024 18:20 WG2220590 Dibenz(a,h)anthracene U 0.0130 0.0469 1 02/08/2024 18:20 WG2220590 1,2-Dichlorobenzene U 0.0139 0.469 1 02/08/2024 18:20 WG2220590 1,3-Dichlorobenzene U 0.0142 0.469 1 02/08/2024 18:20 WG2220590 1,4-Dichlorobenzene U 0.0140 0.469 1 02/08/2024 18:20 WG2220590 3,3-Dichlorobenzidine U 0.0173 0.469 1 02/08/2024 18:20 WG2220590 2,4-Dinitrotoluene U 0.0134 0.469 1 02/08/2024 18:20 WG2220590 2,6-Dinitrotoluene U 0.0153 0.469 1 02/08/2024 18:20 WG2220590 Fluoranthene U 0.00846 0.0469 1 02/08/2024 18:20 WG2220590 Fluorene U 0.00763 0.0469 1 02/08/2024 18:20 WG2220590 Hexachlorobenzene U 0.0166 0.469 1 02/08/2024 18:20 WG2220590 Hexachloro-1,3-butadiene U 0.0158 0.469 1 02/08/2024 18:20 WG2220590 Hexachlorocyclopentadiene U 0.0246 0.469 1 02/08/2024 18:20 WG2220590 Hexachloroethane U 0.0184 0.469 1 02/08/2024 18:20 WG2220590 Indeno(1,2,3-cd)pyrene U 0.0132 0.0469 1 02/08/2024 18:20 WG2220590 Isophorone U 0.0144 0.469 1 02/08/2024 18:20 WG2220590 Naphthalene U 0.0118 0.0469 1 02/08/2024 18:20 WG2220590 Nitrobenzene U 0.0163 0.469 1 02/08/2024 18:20 WG2220590 n-Nitrosodimethylamine U 0.0695 0.469 1 02/08/2024 18:20 WG2220590 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/16/24 11:51 17 of 89 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/19/24 20:18 17 of 89 SAMPLE RESULTS - 04 L1701794 SB-7 (3-4) Collected date/time: 01/29/24 14:35 Semi Volatile Organic Compounds (GC/MS) by Method 8270E Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time n-Nitrosodiphenylamine U 0.0355 0.469 1 02/08/2024 18:20 WG2220590 n-Nitrosodi-n-propylamine U 0.0156 0.469 1 02/08/2024 18:20 WG2220590 Phenanthrene U 0.00931 0.0469 1 02/08/2024 18:20 WG2220590 Benzylbutyl phthalate U 0.0146 0.469 1 02/08/2024 18:20 WG2220590 Bis(2-ethylhexyl)phthalate U 0.0594 0.469 1 02/08/2024 18:20 WG2220590 Di-n-butyl phthalate U 0.0160 0.469 1 02/08/2024 18:20 WG2220590 Diethyl phthalate U 0.0155 0.469 1 02/08/2024 18:20 WG2220590 Dimethyl phthalate U 0.0994 0.469 1 02/08/2024 18:20 WG2220590 Di-n-octyl phthalate U 0.0317 0.469 1 02/08/2024 18:20 WG2220590 Pyrene U 0.00912 0.0469 1 02/08/2024 18:20 WG2220590 1,2,4-Trichlorobenzene U 0.0146 0.469 1 02/08/2024 18:20 WG2220590 4-Chloro-3-methylphenol U 0.0152 0.469 1 02/08/2024 18:20 WG2220590 2-Chlorophenol U 0.0155 0.469 1 02/08/2024 18:20 WG2220590 2,4-Dichlorophenol U 0.0137 0.469 1 02/08/2024 18:20 WG2220590 2,4-Dimethylphenol U 0.0122 0.469 1 02/08/2024 18:20 WG2220590 4,6-Dinitro-2-methylphenol U 0.106 0.469 1 02/08/2024 18:20 WG2220590 2,4-Dinitrophenol U 0.110 0.469 1 02/08/2024 18:20 WG2220590 2-Nitrophenol U 0.0168 0.469 1 02/08/2024 18:20 WG2220590 4-Nitrophenol U 0.0146 0.469 1 02/08/2024 18:20 WG2220590 Pentachlorophenol U 0.0126 0.469 1 02/08/2024 18:20 WG2220590 Phenol U 0.0189 0.469 1 02/08/2024 18:20 WG2220590 2,4,6-Trichlorophenol U 0.0151 0.469 1 02/08/2024 18:20 WG2220590 (S) 2-Fluorophenol 72.3 12.0-120 02/08/2024 18:20 WG2220590 (S) Phenol-d5 70.2 10.0-120 02/08/2024 18:20 WG2220590 (S) Nitrobenzene-d5 68.7 10.0-122 02/08/2024 18:20 WG2220590 (S) 2-Fluorobiphenyl 71.1 15.0-120 02/08/2024 18:20 WG2220590 (S) 2,4,6-Tribromophenol 74.5 10.0-127 02/08/2024 18:20 WG2220590 (S) p-Terphenyl-d14 79.2 10.0-120 02/08/2024 18:20 WG2220590 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/16/24 11:51 18 of 89 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/19/24 20:18 18 of 89 SAMPLE RESULTS - 05 L1701794 SB-9 (0-1) Collected date/time: 01/29/24 15:15 Total Solids by Method 2540 G-2011 Result Qualifier Dilution Analysis Batch Analyte %date / time Total Solids 87.0 1 02/06/2024 11:02 WG2219977 Volatile Organic Compounds (GC/MS) by Method 8260D Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time Acetone U 0.0486 0.0665 1 02/05/2024 22:27 WG2220500 Acrylonitrile U 0.00480 0.0166 1 02/05/2024 22:27 WG2220500 Benzene U 0.000621 0.00133 1 02/05/2024 22:27 WG2220500 Bromobenzene U 0.00120 0.0166 1 02/05/2024 22:27 WG2220500 Bromodichloromethane U 0.000965 0.00333 1 02/05/2024 22:27 WG2220500 Bromoform U 0.00156 0.0333 1 02/05/2024 22:27 WG2220500 Bromomethane U 0.00262 0.0166 1 02/05/2024 22:27 WG2220500 n-Butylbenzene U 0.00699 0.0166 1 02/05/2024 22:27 WG2220500 sec-Butylbenzene U 0.00383 0.0166 1 02/05/2024 22:27 WG2220500 tert-Butylbenzene U 0.00260 0.00665 1 02/05/2024 22:27 WG2220500 Carbon tetrachloride U 0.00120 0.00665 1 02/05/2024 22:27 WG2220500 Chlorobenzene U 0.000279 0.00333 1 02/05/2024 22:27 WG2220500 Chlorodibromomethane U 0.000814 0.00333 1 02/05/2024 22:27 WG2220500 Chloroethane U 0.00226 0.00665 1 02/05/2024 22:27 WG2220500 Chloroform 0.00278 B J 0.00137 0.00333 1 02/05/2024 22:27 WG2220500 Chloromethane U 0.00579 0.0166 1 02/05/2024 22:27 WG2220500 2-Chlorotoluene U 0.00115 0.00333 1 02/05/2024 22:27 WG2220500 4-Chlorotoluene U 0.000599 0.00665 1 02/05/2024 22:27 WG2220500 1,2-Dibromo-3-Chloropropane U 0.00519 0.0333 1 02/05/2024 22:27 WG2220500 1,2-Dibromoethane U 0.000862 0.00333 1 02/05/2024 22:27 WG2220500 Dibromomethane U 0.000998 0.00665 1 02/05/2024 22:27 WG2220500 1,2-Dichlorobenzene U 0.000566 0.00665 1 02/05/2024 22:27 WG2220500 1,3-Dichlorobenzene U 0.000798 0.00665 1 02/05/2024 22:27 WG2220500 1,4-Dichlorobenzene U 0.000932 0.00665 1 02/05/2024 22:27 WG2220500 Dichlorodifluoromethane U 0.00214 0.00665 1 02/05/2024 22:27 WG2220500 1,1-Dichloroethane U 0.000653 0.00333 1 02/05/2024 22:27 WG2220500 1,2-Dichloroethane U 0.000864 0.00333 1 02/05/2024 22:27 WG2220500 1,1-Dichloroethene U 0.000806 0.00333 1 02/05/2024 22:27 WG2220500 cis-1,2-Dichloroethene U 0.000977 0.00333 1 02/05/2024 22:27 WG2220500 trans-1,2-Dichloroethene U 0.00138 0.00665 1 02/05/2024 22:27 WG2220500 1,2-Dichloropropane U 0.00189 0.00665 1 02/05/2024 22:27 WG2220500 1,1-Dichloropropene U 0.00108 0.00333 1 02/05/2024 22:27 WG2220500 1,3-Dichloropropane U 0.000667 0.00665 1 02/05/2024 22:27 WG2220500 cis-1,3-Dichloropropene U 0.00101 0.00333 1 02/05/2024 22:27 WG2220500 trans-1,3-Dichloropropene U 0.00152 0.00665 1 02/05/2024 22:27 WG2220500 2,2-Dichloropropane U 0.00184 0.00333 1 02/05/2024 22:27 WG2220500 Di-isopropyl ether U 0.000546 0.00133 1 02/05/2024 22:27 WG2220500 Ethylbenzene U 0.000981 0.00333 1 02/05/2024 22:27 WG2220500 Hexachloro-1,3-butadiene U 0.00798 0.0333 1 02/05/2024 22:27 WG2220500 Isopropylbenzene U 0.000566 0.00333 1 02/05/2024 22:27 WG2220500 p-Isopropyltoluene U 0.00339 0.00665 1 02/05/2024 22:27 WG2220500 2-Butanone (MEK)U 0.0845 0.133 1 02/05/2024 22:27 WG2220500 Methylene Chloride 0.0128 B J 0.00884 0.0333 1 02/05/2024 22:27 WG2220500 4-Methyl-2-pentanone (MIBK)U 0.00303 0.0333 1 02/05/2024 22:27 WG2220500 Methyl tert-butyl ether U 0.000466 0.00133 1 02/05/2024 22:27 WG2220500 Naphthalene U C3 0.00649 0.0166 1 02/05/2024 22:27 WG2220500 n-Propylbenzene U 0.00126 0.00665 1 02/05/2024 22:27 WG2220500 Styrene U 0.000305 0.0166 1 02/05/2024 22:27 WG2220500 1,1,1,2-Tetrachloroethane U 0.00126 0.00333 1 02/05/2024 22:27 WG2220500 1,1,2,2-Tetrachloroethane U 0.000925 0.00333 1 02/05/2024 22:27 WG2220500 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/16/24 11:51 19 of 89 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/19/24 20:18 19 of 89 SAMPLE RESULTS - 05 L1701794 SB-9 (0-1) Collected date/time: 01/29/24 15:15 Volatile Organic Compounds (GC/MS) by Method 8260D Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time 1,1,2-Trichlorotrifluoroethane U 0.00100 0.00333 1 02/05/2024 22:27 WG2220500 Tetrachloroethene U 0.00119 0.00333 1 02/05/2024 22:27 WG2220500 Toluene U 0.00173 0.00665 1 02/05/2024 22:27 WG2220500 1,2,3-Trichlorobenzene U 0.00975 0.0166 1 02/05/2024 22:27 WG2220500 1,2,4-Trichlorobenzene U 0.00586 0.0166 1 02/05/2024 22:27 WG2220500 1,1,1-Trichloroethane U 0.00123 0.00333 1 02/05/2024 22:27 WG2220500 1,1,2-Trichloroethane U 0.000794 0.00333 1 02/05/2024 22:27 WG2220500 Trichloroethene U J4 0.000777 0.00133 1 02/05/2024 22:27 WG2220500 Trichlorofluoromethane U 0.00110 0.00333 1 02/05/2024 22:27 WG2220500 1,2,3-Trichloropropane U 0.00216 0.0166 1 02/05/2024 22:27 WG2220500 1,2,4-Trimethylbenzene 0.00475 J 0.00210 0.00665 1 02/05/2024 22:27 WG2220500 1,2,3-Trimethylbenzene U 0.00210 0.00665 1 02/05/2024 22:27 WG2220500 1,3,5-Trimethylbenzene U 0.00266 0.00665 1 02/05/2024 22:27 WG2220500 Vinyl chloride U 0.00154 0.00333 1 02/05/2024 22:27 WG2220500 Xylenes, Total 0.00306 J 0.00117 0.00865 1 02/05/2024 22:27 WG2220500 (S) Toluene-d8 104 75.0-131 02/05/2024 22:27 WG2220500 (S) 4-Bromofluorobenzene 97.4 67.0-138 02/05/2024 22:27 WG2220500 (S) 1,2-Dichloroethane-d4 114 70.0-130 02/05/2024 22:27 WG2220500 Semi Volatile Organic Compounds (GC/MS) by Method 8270E Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time Acenaphthene U 0.00619 0.0383 1 02/09/2024 00:29 WG2220590 Acenaphthylene 0.0126 J 0.00539 0.0383 1 02/09/2024 00:29 WG2220590 Anthracene U 0.00681 0.0383 1 02/09/2024 00:29 WG2220590 Benzidine U 0.0719 1.92 1 02/09/2024 00:29 WG2220590 Benzo(a)anthracene 0.0330 J 0.00675 0.0383 1 02/09/2024 00:29 WG2220590 Benzo(b)fluoranthene 0.0757 0.00714 0.0383 1 02/09/2024 00:29 WG2220590 Benzo(k)fluoranthene 0.0215 J 0.00680 0.0383 1 02/09/2024 00:29 WG2220590 Benzo(g,h,i)perylene 0.0433 0.00700 0.0383 1 02/09/2024 00:29 WG2220590 Benzo(a)pyrene 0.0461 0.00711 0.0383 1 02/09/2024 00:29 WG2220590 Bis(2-chlorethoxy)methane U 0.0115 0.383 1 02/09/2024 00:29 WG2220590 Bis(2-chloroethyl)ether U 0.0126 0.383 1 02/09/2024 00:29 WG2220590 2,2-Oxybis(1-Chloropropane)U 0.0165 0.383 1 02/09/2024 00:29 WG2220590 4-Bromophenyl-phenylether U 0.0134 0.383 1 02/09/2024 00:29 WG2220590 2-Chloronaphthalene U 0.00672 0.0383 1 02/09/2024 00:29 WG2220590 4-Chlorophenyl-phenylether U 0.0133 0.383 1 02/09/2024 00:29 WG2220590 Chrysene 0.0404 0.00761 0.0383 1 02/09/2024 00:29 WG2220590 Dibenz(a,h)anthracene 0.0107 J 0.0106 0.0383 1 02/09/2024 00:29 WG2220590 1,2-Dichlorobenzene U 0.0113 0.383 1 02/09/2024 00:29 WG2220590 1,3-Dichlorobenzene U 0.0116 0.383 1 02/09/2024 00:29 WG2220590 1,4-Dichlorobenzene U 0.0114 0.383 1 02/09/2024 00:29 WG2220590 3,3-Dichlorobenzidine U 0.0141 0.383 1 02/09/2024 00:29 WG2220590 2,4-Dinitrotoluene U 0.0110 0.383 1 02/09/2024 00:29 WG2220590 2,6-Dinitrotoluene U 0.0125 0.383 1 02/09/2024 00:29 WG2220590 Fluoranthene 0.0943 0.00691 0.0383 1 02/09/2024 00:29 WG2220590 Fluorene U 0.00623 0.0383 1 02/09/2024 00:29 WG2220590 Hexachlorobenzene U 0.0136 0.383 1 02/09/2024 00:29 WG2220590 Hexachloro-1,3-butadiene U 0.0129 0.383 1 02/09/2024 00:29 WG2220590 Hexachlorocyclopentadiene U 0.0201 0.383 1 02/09/2024 00:29 WG2220590 Hexachloroethane U 0.0151 0.383 1 02/09/2024 00:29 WG2220590 Indeno(1,2,3-cd)pyrene 0.0450 0.0108 0.0383 1 02/09/2024 00:29 WG2220590 Isophorone U 0.0117 0.383 1 02/09/2024 00:29 WG2220590 Naphthalene U 0.00961 0.0383 1 02/09/2024 00:29 WG2220590 Nitrobenzene U 0.0133 0.383 1 02/09/2024 00:29 WG2220590 n-Nitrosodimethylamine U 0.0568 0.383 1 02/09/2024 00:29 WG2220590 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/16/24 11:51 20 of 89 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/19/24 20:18 20 of 89 SAMPLE RESULTS - 05 L1701794 SB-9 (0-1) Collected date/time: 01/29/24 15:15 Semi Volatile Organic Compounds (GC/MS) by Method 8270E Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time n-Nitrosodiphenylamine U 0.0290 0.383 1 02/09/2024 00:29 WG2220590 n-Nitrosodi-n-propylamine U 0.0128 0.383 1 02/09/2024 00:29 WG2220590 Phenanthrene 0.0362 J 0.00760 0.0383 1 02/09/2024 00:29 WG2220590 Benzylbutyl phthalate U 0.0120 0.383 1 02/09/2024 00:29 WG2220590 Bis(2-ethylhexyl)phthalate 0.268 J 0.0485 0.383 1 02/09/2024 00:29 WG2220590 Di-n-butyl phthalate U 0.0131 0.383 1 02/09/2024 00:29 WG2220590 Diethyl phthalate U 0.0126 0.383 1 02/09/2024 00:29 WG2220590 Dimethyl phthalate U 0.0811 0.383 1 02/09/2024 00:29 WG2220590 Di-n-octyl phthalate U 0.0259 0.383 1 02/09/2024 00:29 WG2220590 Pyrene 0.0756 0.00745 0.0383 1 02/09/2024 00:29 WG2220590 1,2,4-Trichlorobenzene U 0.0120 0.383 1 02/09/2024 00:29 WG2220590 4-Chloro-3-methylphenol U 0.0124 0.383 1 02/09/2024 00:29 WG2220590 2-Chlorophenol U 0.0126 0.383 1 02/09/2024 00:29 WG2220590 2,4-Dichlorophenol U 0.0111 0.383 1 02/09/2024 00:29 WG2220590 2,4-Dimethylphenol U 0.0100 0.383 1 02/09/2024 00:29 WG2220590 4,6-Dinitro-2-methylphenol U 0.0868 0.383 1 02/09/2024 00:29 WG2220590 2,4-Dinitrophenol U 0.0895 0.383 1 02/09/2024 00:29 WG2220590 2-Nitrophenol U 0.0137 0.383 1 02/09/2024 00:29 WG2220590 4-Nitrophenol U 0.0120 0.383 1 02/09/2024 00:29 WG2220590 Pentachlorophenol U 0.0103 0.383 1 02/09/2024 00:29 WG2220590 Phenol U 0.0154 0.383 1 02/09/2024 00:29 WG2220590 2,4,6-Trichlorophenol U 0.0123 0.383 1 02/09/2024 00:29 WG2220590 (S) 2-Fluorophenol 71.3 12.0-120 02/09/2024 00:29 WG2220590 (S) Phenol-d5 72.0 10.0-120 02/09/2024 00:29 WG2220590 (S) Nitrobenzene-d5 70.5 10.0-122 02/09/2024 00:29 WG2220590 (S) 2-Fluorobiphenyl 69.3 15.0-120 02/09/2024 00:29 WG2220590 (S) 2,4,6-Tribromophenol 73.1 10.0-127 02/09/2024 00:29 WG2220590 (S) p-Terphenyl-d14 76.4 10.0-120 02/09/2024 00:29 WG2220590 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/16/24 11:51 21 of 89 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/19/24 20:18 21 of 89 SAMPLE RESULTS - 06 L1701794 SB-9 (1-2) Collected date/time: 01/29/24 15:20 Total Solids by Method 2540 G-2011 Result Qualifier Dilution Analysis Batch Analyte %date / time Total Solids 74.4 1 02/06/2024 11:02 WG2219977 Volatile Organic Compounds (GC/MS) by Method 8260D Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time Acetone U 0.0652 0.0893 1 02/05/2024 22:46 WG2220500 Acrylonitrile U 0.00645 0.0223 1 02/05/2024 22:46 WG2220500 Benzene U 0.000834 0.00179 1 02/05/2024 22:46 WG2220500 Bromobenzene U 0.00161 0.0223 1 02/05/2024 22:46 WG2220500 Bromodichloromethane U 0.00130 0.00447 1 02/05/2024 22:46 WG2220500 Bromoform U 0.00209 0.0447 1 02/05/2024 22:46 WG2220500 Bromomethane U 0.00352 0.0223 1 02/05/2024 22:46 WG2220500 n-Butylbenzene U 0.00938 0.0223 1 02/05/2024 22:46 WG2220500 sec-Butylbenzene U 0.00514 0.0223 1 02/05/2024 22:46 WG2220500 tert-Butylbenzene U 0.00348 0.00893 1 02/05/2024 22:46 WG2220500 Carbon tetrachloride U 0.00160 0.00893 1 02/05/2024 22:46 WG2220500 Chlorobenzene U 0.000375 0.00447 1 02/05/2024 22:46 WG2220500 Chlorodibromomethane U 0.00109 0.00447 1 02/05/2024 22:46 WG2220500 Chloroethane U 0.00304 0.00893 1 02/05/2024 22:46 WG2220500 Chloroform 0.00355 B J 0.00184 0.00447 1 02/05/2024 22:46 WG2220500 Chloromethane U 0.00777 0.0223 1 02/05/2024 22:46 WG2220500 2-Chlorotoluene U 0.00155 0.00447 1 02/05/2024 22:46 WG2220500 4-Chlorotoluene U 0.000804 0.00893 1 02/05/2024 22:46 WG2220500 1,2-Dibromo-3-Chloropropane U 0.00697 0.0447 1 02/05/2024 22:46 WG2220500 1,2-Dibromoethane U 0.00116 0.00447 1 02/05/2024 22:46 WG2220500 Dibromomethane U 0.00134 0.00893 1 02/05/2024 22:46 WG2220500 1,2-Dichlorobenzene U 0.000759 0.00893 1 02/05/2024 22:46 WG2220500 1,3-Dichlorobenzene U 0.00107 0.00893 1 02/05/2024 22:46 WG2220500 1,4-Dichlorobenzene U 0.00125 0.00893 1 02/05/2024 22:46 WG2220500 Dichlorodifluoromethane U 0.00288 0.00893 1 02/05/2024 22:46 WG2220500 1,1-Dichloroethane U 0.000877 0.00447 1 02/05/2024 22:46 WG2220500 1,2-Dichloroethane U 0.00116 0.00447 1 02/05/2024 22:46 WG2220500 1,1-Dichloroethene U 0.00108 0.00447 1 02/05/2024 22:46 WG2220500 cis-1,2-Dichloroethene U 0.00131 0.00447 1 02/05/2024 22:46 WG2220500 trans-1,2-Dichloroethene U 0.00186 0.00893 1 02/05/2024 22:46 WG2220500 1,2-Dichloropropane U 0.00254 0.00893 1 02/05/2024 22:46 WG2220500 1,1-Dichloropropene U 0.00145 0.00447 1 02/05/2024 22:46 WG2220500 1,3-Dichloropropane U 0.000895 0.00893 1 02/05/2024 22:46 WG2220500 cis-1,3-Dichloropropene U 0.00135 0.00447 1 02/05/2024 22:46 WG2220500 trans-1,3-Dichloropropene U 0.00204 0.00893 1 02/05/2024 22:46 WG2220500 2,2-Dichloropropane U 0.00246 0.00447 1 02/05/2024 22:46 WG2220500 Di-isopropyl ether U 0.000732 0.00179 1 02/05/2024 22:46 WG2220500 Ethylbenzene U 0.00132 0.00447 1 02/05/2024 22:46 WG2220500 Hexachloro-1,3-butadiene U 0.0107 0.0447 1 02/05/2024 22:46 WG2220500 Isopropylbenzene U 0.000759 0.00447 1 02/05/2024 22:46 WG2220500 p-Isopropyltoluene U 0.00455 0.00893 1 02/05/2024 22:46 WG2220500 2-Butanone (MEK)U 0.113 0.179 1 02/05/2024 22:46 WG2220500 Methylene Chloride 0.0146 B J 0.0119 0.0447 1 02/05/2024 22:46 WG2220500 4-Methyl-2-pentanone (MIBK)U 0.00407 0.0447 1 02/05/2024 22:46 WG2220500 Methyl tert-butyl ether U 0.000625 0.00179 1 02/05/2024 22:46 WG2220500 Naphthalene U C3 0.00872 0.0223 1 02/05/2024 22:46 WG2220500 n-Propylbenzene U 0.00170 0.00893 1 02/05/2024 22:46 WG2220500 Styrene U 0.000409 0.0223 1 02/05/2024 22:46 WG2220500 1,1,1,2-Tetrachloroethane U 0.00169 0.00447 1 02/05/2024 22:46 WG2220500 1,1,2,2-Tetrachloroethane U 0.00124 0.00447 1 02/05/2024 22:46 WG2220500 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/16/24 11:51 22 of 89 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/19/24 20:18 22 of 89 SAMPLE RESULTS - 06 L1701794 SB-9 (1-2) Collected date/time: 01/29/24 15:20 Volatile Organic Compounds (GC/MS) by Method 8260D Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time 1,1,2-Trichlorotrifluoroethane U 0.00135 0.00447 1 02/05/2024 22:46 WG2220500 Tetrachloroethene U 0.00160 0.00447 1 02/05/2024 22:46 WG2220500 Toluene U 0.00232 0.00893 1 02/05/2024 22:46 WG2220500 1,2,3-Trichlorobenzene U 0.0131 0.0223 1 02/05/2024 22:46 WG2220500 1,2,4-Trichlorobenzene U 0.00786 0.0223 1 02/05/2024 22:46 WG2220500 1,1,1-Trichloroethane U 0.00165 0.00447 1 02/05/2024 22:46 WG2220500 1,1,2-Trichloroethane U 0.00107 0.00447 1 02/05/2024 22:46 WG2220500 Trichloroethene U J4 0.00104 0.00179 1 02/05/2024 22:46 WG2220500 Trichlorofluoromethane U 0.00148 0.00447 1 02/05/2024 22:46 WG2220500 1,2,3-Trichloropropane U 0.00289 0.0223 1 02/05/2024 22:46 WG2220500 1,2,4-Trimethylbenzene U 0.00282 0.00893 1 02/05/2024 22:46 WG2220500 1,2,3-Trimethylbenzene U 0.00282 0.00893 1 02/05/2024 22:46 WG2220500 1,3,5-Trimethylbenzene U 0.00357 0.00893 1 02/05/2024 22:46 WG2220500 Vinyl chloride U 0.00207 0.00447 1 02/05/2024 22:46 WG2220500 Xylenes, Total U 0.00157 0.0116 1 02/05/2024 22:46 WG2220500 (S) Toluene-d8 105 75.0-131 02/05/2024 22:46 WG2220500 (S) 4-Bromofluorobenzene 98.4 67.0-138 02/05/2024 22:46 WG2220500 (S) 1,2-Dichloroethane-d4 115 70.0-130 02/05/2024 22:46 WG2220500 Semi Volatile Organic Compounds (GC/MS) by Method 8270E Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time Acenaphthene U 0.00725 0.0448 1 02/08/2024 18:41 WG2220590 Acenaphthylene U 0.00631 0.0448 1 02/08/2024 18:41 WG2220590 Anthracene U 0.00798 0.0448 1 02/08/2024 18:41 WG2220590 Benzidine U 0.0842 2.25 1 02/08/2024 18:41 WG2220590 Benzo(a)anthracene U 0.00790 0.0448 1 02/08/2024 18:41 WG2220590 Benzo(b)fluoranthene U 0.00835 0.0448 1 02/08/2024 18:41 WG2220590 Benzo(k)fluoranthene U 0.00796 0.0448 1 02/08/2024 18:41 WG2220590 Benzo(g,h,i)perylene U 0.00819 0.0448 1 02/08/2024 18:41 WG2220590 Benzo(a)pyrene U 0.00833 0.0448 1 02/08/2024 18:41 WG2220590 Bis(2-chlorethoxy)methane U 0.0134 0.448 1 02/08/2024 18:41 WG2220590 Bis(2-chloroethyl)ether U 0.0148 0.448 1 02/08/2024 18:41 WG2220590 2,2-Oxybis(1-Chloropropane)U 0.0194 0.448 1 02/08/2024 18:41 WG2220590 4-Bromophenyl-phenylether U 0.0157 0.448 1 02/08/2024 18:41 WG2220590 2-Chloronaphthalene U 0.00787 0.0448 1 02/08/2024 18:41 WG2220590 4-Chlorophenyl-phenylether U 0.0156 0.448 1 02/08/2024 18:41 WG2220590 Chrysene U 0.00890 0.0448 1 02/08/2024 18:41 WG2220590 Dibenz(a,h)anthracene U 0.0124 0.0448 1 02/08/2024 18:41 WG2220590 1,2-Dichlorobenzene U 0.0133 0.448 1 02/08/2024 18:41 WG2220590 1,3-Dichlorobenzene U 0.0136 0.448 1 02/08/2024 18:41 WG2220590 1,4-Dichlorobenzene U 0.0133 0.448 1 02/08/2024 18:41 WG2220590 3,3-Dichlorobenzidine U 0.0165 0.448 1 02/08/2024 18:41 WG2220590 2,4-Dinitrotoluene U 0.0128 0.448 1 02/08/2024 18:41 WG2220590 2,6-Dinitrotoluene U 0.0147 0.448 1 02/08/2024 18:41 WG2220590 Fluoranthene U 0.00808 0.0448 1 02/08/2024 18:41 WG2220590 Fluorene U 0.00729 0.0448 1 02/08/2024 18:41 WG2220590 Hexachlorobenzene U 0.0159 0.448 1 02/08/2024 18:41 WG2220590 Hexachloro-1,3-butadiene U 0.0151 0.448 1 02/08/2024 18:41 WG2220590 Hexachlorocyclopentadiene U 0.0235 0.448 1 02/08/2024 18:41 WG2220590 Hexachloroethane U 0.0176 0.448 1 02/08/2024 18:41 WG2220590 Indeno(1,2,3-cd)pyrene U 0.0127 0.0448 1 02/08/2024 18:41 WG2220590 Isophorone U 0.0137 0.448 1 02/08/2024 18:41 WG2220590 Naphthalene U 0.0112 0.0448 1 02/08/2024 18:41 WG2220590 Nitrobenzene U 0.0156 0.448 1 02/08/2024 18:41 WG2220590 n-Nitrosodimethylamine U 0.0664 0.448 1 02/08/2024 18:41 WG2220590 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/16/24 11:51 23 of 89 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/19/24 20:18 23 of 89 SAMPLE RESULTS - 06 L1701794 SB-9 (1-2) Collected date/time: 01/29/24 15:20 Semi Volatile Organic Compounds (GC/MS) by Method 8270E Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time n-Nitrosodiphenylamine U 0.0339 0.448 1 02/08/2024 18:41 WG2220590 n-Nitrosodi-n-propylamine U 0.0149 0.448 1 02/08/2024 18:41 WG2220590 Phenanthrene U 0.00889 0.0448 1 02/08/2024 18:41 WG2220590 Benzylbutyl phthalate U 0.0140 0.448 1 02/08/2024 18:41 WG2220590 Bis(2-ethylhexyl)phthalate U 0.0568 0.448 1 02/08/2024 18:41 WG2220590 Di-n-butyl phthalate U 0.0153 0.448 1 02/08/2024 18:41 WG2220590 Diethyl phthalate U 0.0148 0.448 1 02/08/2024 18:41 WG2220590 Dimethyl phthalate U 0.0950 0.448 1 02/08/2024 18:41 WG2220590 Di-n-octyl phthalate U 0.0303 0.448 1 02/08/2024 18:41 WG2220590 Pyrene U 0.00872 0.0448 1 02/08/2024 18:41 WG2220590 1,2,4-Trichlorobenzene U 0.0140 0.448 1 02/08/2024 18:41 WG2220590 4-Chloro-3-methylphenol U 0.0145 0.448 1 02/08/2024 18:41 WG2220590 2-Chlorophenol U 0.0148 0.448 1 02/08/2024 18:41 WG2220590 2,4-Dichlorophenol U 0.0130 0.448 1 02/08/2024 18:41 WG2220590 2,4-Dimethylphenol U 0.0117 0.448 1 02/08/2024 18:41 WG2220590 4,6-Dinitro-2-methylphenol U 0.102 0.448 1 02/08/2024 18:41 WG2220590 2,4-Dinitrophenol U 0.105 0.448 1 02/08/2024 18:41 WG2220590 2-Nitrophenol U 0.0160 0.448 1 02/08/2024 18:41 WG2220590 4-Nitrophenol U 0.0140 0.448 1 02/08/2024 18:41 WG2220590 Pentachlorophenol U 0.0121 0.448 1 02/08/2024 18:41 WG2220590 Phenol U 0.0180 0.448 1 02/08/2024 18:41 WG2220590 2,4,6-Trichlorophenol U 0.0144 0.448 1 02/08/2024 18:41 WG2220590 (S) 2-Fluorophenol 71.7 12.0-120 02/08/2024 18:41 WG2220590 (S) Phenol-d5 71.6 10.0-120 02/08/2024 18:41 WG2220590 (S) Nitrobenzene-d5 67.6 10.0-122 02/08/2024 18:41 WG2220590 (S) 2-Fluorobiphenyl 70.5 15.0-120 02/08/2024 18:41 WG2220590 (S) 2,4,6-Tribromophenol 68.4 10.0-127 02/08/2024 18:41 WG2220590 (S) p-Terphenyl-d14 72.7 10.0-120 02/08/2024 18:41 WG2220590 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/16/24 11:51 24 of 89 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/19/24 20:18 24 of 89 SAMPLE RESULTS - 07 L1701794 SB-11 0-1 Collected date/time: 01/30/24 09:05 Total Solids by Method 2540 G-2011 Result Qualifier Dilution Analysis Batch Analyte %date / time Total Solids 85.3 1 02/06/2024 11:02 WG2219977 Volatile Organic Compounds (GC/MS) by Method 8260D Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time Acetone U 0.0502 0.0688 1 02/05/2024 23:06 WG2220500 Acrylonitrile U 0.00497 0.0172 1 02/05/2024 23:06 WG2220500 Benzene U 0.000643 0.00138 1 02/05/2024 23:06 WG2220500 Bromobenzene U 0.00124 0.0172 1 02/05/2024 23:06 WG2220500 Bromodichloromethane U 0.000998 0.00344 1 02/05/2024 23:06 WG2220500 Bromoform U 0.00161 0.0344 1 02/05/2024 23:06 WG2220500 Bromomethane U 0.00271 0.0172 1 02/05/2024 23:06 WG2220500 n-Butylbenzene U 0.00722 0.0172 1 02/05/2024 23:06 WG2220500 sec-Butylbenzene U 0.00396 0.0172 1 02/05/2024 23:06 WG2220500 tert-Butylbenzene U 0.00268 0.00688 1 02/05/2024 23:06 WG2220500 Carbon tetrachloride U 0.00124 0.00688 1 02/05/2024 23:06 WG2220500 Chlorobenzene U 0.000289 0.00344 1 02/05/2024 23:06 WG2220500 Chlorodibromomethane U 0.000842 0.00344 1 02/05/2024 23:06 WG2220500 Chloroethane U 0.00234 0.00688 1 02/05/2024 23:06 WG2220500 Chloroform 0.00195 B J 0.00142 0.00344 1 02/05/2024 23:06 WG2220500 Chloromethane U 0.00599 0.0172 1 02/05/2024 23:06 WG2220500 2-Chlorotoluene U 0.00119 0.00344 1 02/05/2024 23:06 WG2220500 4-Chlorotoluene U 0.000619 0.00688 1 02/05/2024 23:06 WG2220500 1,2-Dibromo-3-Chloropropane U 0.00537 0.0344 1 02/05/2024 23:06 WG2220500 1,2-Dibromoethane U 0.000892 0.00344 1 02/05/2024 23:06 WG2220500 Dibromomethane U 0.00103 0.00688 1 02/05/2024 23:06 WG2220500 1,2-Dichlorobenzene U 0.000585 0.00688 1 02/05/2024 23:06 WG2220500 1,3-Dichlorobenzene U 0.000826 0.00688 1 02/05/2024 23:06 WG2220500 1,4-Dichlorobenzene U 0.000963 0.00688 1 02/05/2024 23:06 WG2220500 Dichlorodifluoromethane U 0.00222 0.00688 1 02/05/2024 23:06 WG2220500 1,1-Dichloroethane U 0.000676 0.00344 1 02/05/2024 23:06 WG2220500 1,2-Dichloroethane U 0.000893 0.00344 1 02/05/2024 23:06 WG2220500 1,1-Dichloroethene U 0.000834 0.00344 1 02/05/2024 23:06 WG2220500 cis-1,2-Dichloroethene U 0.00101 0.00344 1 02/05/2024 23:06 WG2220500 trans-1,2-Dichloroethene U 0.00143 0.00688 1 02/05/2024 23:06 WG2220500 1,2-Dichloropropane U 0.00195 0.00688 1 02/05/2024 23:06 WG2220500 1,1-Dichloropropene U 0.00111 0.00344 1 02/05/2024 23:06 WG2220500 1,3-Dichloropropane U 0.000689 0.00688 1 02/05/2024 23:06 WG2220500 cis-1,3-Dichloropropene U 0.00104 0.00344 1 02/05/2024 23:06 WG2220500 trans-1,3-Dichloropropene U 0.00157 0.00688 1 02/05/2024 23:06 WG2220500 2,2-Dichloropropane U 0.00190 0.00344 1 02/05/2024 23:06 WG2220500 Di-isopropyl ether U 0.000564 0.00138 1 02/05/2024 23:06 WG2220500 Ethylbenzene U 0.00101 0.00344 1 02/05/2024 23:06 WG2220500 Hexachloro-1,3-butadiene U 0.00826 0.0344 1 02/05/2024 23:06 WG2220500 Isopropylbenzene U 0.000585 0.00344 1 02/05/2024 23:06 WG2220500 p-Isopropyltoluene U 0.00351 0.00688 1 02/05/2024 23:06 WG2220500 2-Butanone (MEK)U 0.0874 0.138 1 02/05/2024 23:06 WG2220500 Methylene Chloride 0.0133 B J 0.00914 0.0344 1 02/05/2024 23:06 WG2220500 4-Methyl-2-pentanone (MIBK)U 0.00314 0.0344 1 02/05/2024 23:06 WG2220500 Methyl tert-butyl ether U 0.000482 0.00138 1 02/05/2024 23:06 WG2220500 Naphthalene U C3 0.00671 0.0172 1 02/05/2024 23:06 WG2220500 n-Propylbenzene U 0.00131 0.00688 1 02/05/2024 23:06 WG2220500 Styrene U 0.000315 0.0172 1 02/05/2024 23:06 WG2220500 1,1,1,2-Tetrachloroethane U 0.00130 0.00344 1 02/05/2024 23:06 WG2220500 1,1,2,2-Tetrachloroethane U 0.000956 0.00344 1 02/05/2024 23:06 WG2220500 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/16/24 11:51 25 of 89 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/19/24 20:18 25 of 89 SAMPLE RESULTS - 07 L1701794 SB-11 0-1 Collected date/time: 01/30/24 09:05 Volatile Organic Compounds (GC/MS) by Method 8260D Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time 1,1,2-Trichlorotrifluoroethane U 0.00104 0.00344 1 02/05/2024 23:06 WG2220500 Tetrachloroethene U 0.00123 0.00344 1 02/05/2024 23:06 WG2220500 Toluene U 0.00179 0.00688 1 02/05/2024 23:06 WG2220500 1,2,3-Trichlorobenzene U 0.0101 0.0172 1 02/05/2024 23:06 WG2220500 1,2,4-Trichlorobenzene U 0.00605 0.0172 1 02/05/2024 23:06 WG2220500 1,1,1-Trichloroethane U 0.00127 0.00344 1 02/05/2024 23:06 WG2220500 1,1,2-Trichloroethane U 0.000821 0.00344 1 02/05/2024 23:06 WG2220500 Trichloroethene U J4 0.000804 0.00138 1 02/05/2024 23:06 WG2220500 Trichlorofluoromethane U 0.00114 0.00344 1 02/05/2024 23:06 WG2220500 1,2,3-Trichloropropane U 0.00223 0.0172 1 02/05/2024 23:06 WG2220500 1,2,4-Trimethylbenzene U 0.00217 0.00688 1 02/05/2024 23:06 WG2220500 1,2,3-Trimethylbenzene U 0.00217 0.00688 1 02/05/2024 23:06 WG2220500 1,3,5-Trimethylbenzene U 0.00275 0.00688 1 02/05/2024 23:06 WG2220500 Vinyl chloride U 0.00160 0.00344 1 02/05/2024 23:06 WG2220500 Xylenes, Total U 0.00121 0.00894 1 02/05/2024 23:06 WG2220500 (S) Toluene-d8 103 75.0-131 02/05/2024 23:06 WG2220500 (S) 4-Bromofluorobenzene 97.9 67.0-138 02/05/2024 23:06 WG2220500 (S) 1,2-Dichloroethane-d4 115 70.0-130 02/05/2024 23:06 WG2220500 Semi Volatile Organic Compounds (GC/MS) by Method 8270E Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time Acenaphthene U 0.00632 0.0390 1 02/08/2024 19:22 WG2220590 Acenaphthylene U 0.00550 0.0390 1 02/08/2024 19:22 WG2220590 Anthracene U 0.00695 0.0390 1 02/08/2024 19:22 WG2220590 Benzidine U 0.0734 1.96 1 02/08/2024 19:22 WG2220590 Benzo(a)anthracene 0.00698 J 0.00688 0.0390 1 02/08/2024 19:22 WG2220590 Benzo(b)fluoranthene 0.0124 J 0.00728 0.0390 1 02/08/2024 19:22 WG2220590 Benzo(k)fluoranthene U 0.00694 0.0390 1 02/08/2024 19:22 WG2220590 Benzo(g,h,i)perylene 0.00952 J 0.00714 0.0390 1 02/08/2024 19:22 WG2220590 Benzo(a)pyrene 0.00866 J 0.00726 0.0390 1 02/08/2024 19:22 WG2220590 Bis(2-chlorethoxy)methane U 0.0117 0.390 1 02/08/2024 19:22 WG2220590 Bis(2-chloroethyl)ether U 0.0129 0.390 1 02/08/2024 19:22 WG2220590 2,2-Oxybis(1-Chloropropane)U 0.0169 0.390 1 02/08/2024 19:22 WG2220590 4-Bromophenyl-phenylether U 0.0137 0.390 1 02/08/2024 19:22 WG2220590 2-Chloronaphthalene U 0.00686 0.0390 1 02/08/2024 19:22 WG2220590 4-Chlorophenyl-phenylether U 0.0136 0.390 1 02/08/2024 19:22 WG2220590 Chrysene 0.00788 J 0.00776 0.0390 1 02/08/2024 19:22 WG2220590 Dibenz(a,h)anthracene U 0.0108 0.0390 1 02/08/2024 19:22 WG2220590 1,2-Dichlorobenzene U 0.0116 0.390 1 02/08/2024 19:22 WG2220590 1,3-Dichlorobenzene U 0.0118 0.390 1 02/08/2024 19:22 WG2220590 1,4-Dichlorobenzene U 0.0116 0.390 1 02/08/2024 19:22 WG2220590 3,3-Dichlorobenzidine U 0.0144 0.390 1 02/08/2024 19:22 WG2220590 2,4-Dinitrotoluene U 0.0112 0.390 1 02/08/2024 19:22 WG2220590 2,6-Dinitrotoluene U 0.0128 0.390 1 02/08/2024 19:22 WG2220590 Fluoranthene 0.0163 J 0.00705 0.0390 1 02/08/2024 19:22 WG2220590 Fluorene U 0.00635 0.0390 1 02/08/2024 19:22 WG2220590 Hexachlorobenzene U 0.0138 0.390 1 02/08/2024 19:22 WG2220590 Hexachloro-1,3-butadiene U 0.0131 0.390 1 02/08/2024 19:22 WG2220590 Hexachlorocyclopentadiene U 0.0205 0.390 1 02/08/2024 19:22 WG2220590 Hexachloroethane U 0.0154 0.390 1 02/08/2024 19:22 WG2220590 Indeno(1,2,3-cd)pyrene U 0.0110 0.0390 1 02/08/2024 19:22 WG2220590 Isophorone U 0.0120 0.390 1 02/08/2024 19:22 WG2220590 Naphthalene U 0.00980 0.0390 1 02/08/2024 19:22 WG2220590 Nitrobenzene U 0.0136 0.390 1 02/08/2024 19:22 WG2220590 n-Nitrosodimethylamine U 0.0579 0.390 1 02/08/2024 19:22 WG2220590 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/16/24 11:51 26 of 89 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/19/24 20:18 26 of 89 SAMPLE RESULTS - 07 L1701794 SB-11 0-1 Collected date/time: 01/30/24 09:05 Semi Volatile Organic Compounds (GC/MS) by Method 8270E Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time n-Nitrosodiphenylamine U 0.0295 0.390 1 02/08/2024 19:22 WG2220590 n-Nitrosodi-n-propylamine U 0.0130 0.390 1 02/08/2024 19:22 WG2220590 Phenanthrene U 0.00775 0.0390 1 02/08/2024 19:22 WG2220590 Benzylbutyl phthalate U 0.0122 0.390 1 02/08/2024 19:22 WG2220590 Bis(2-ethylhexyl)phthalate U 0.0495 0.390 1 02/08/2024 19:22 WG2220590 Di-n-butyl phthalate U 0.0134 0.390 1 02/08/2024 19:22 WG2220590 Diethyl phthalate U 0.0129 0.390 1 02/08/2024 19:22 WG2220590 Dimethyl phthalate U 0.0828 0.390 1 02/08/2024 19:22 WG2220590 Di-n-octyl phthalate U 0.0264 0.390 1 02/08/2024 19:22 WG2220590 Pyrene 0.0156 J 0.00760 0.0390 1 02/08/2024 19:22 WG2220590 1,2,4-Trichlorobenzene U 0.0122 0.390 1 02/08/2024 19:22 WG2220590 4-Chloro-3-methylphenol U 0.0127 0.390 1 02/08/2024 19:22 WG2220590 2-Chlorophenol U 0.0129 0.390 1 02/08/2024 19:22 WG2220590 2,4-Dichlorophenol U 0.0114 0.390 1 02/08/2024 19:22 WG2220590 2,4-Dimethylphenol U 0.0102 0.390 1 02/08/2024 19:22 WG2220590 4,6-Dinitro-2-methylphenol U 0.0885 0.390 1 02/08/2024 19:22 WG2220590 2,4-Dinitrophenol U 0.0913 0.390 1 02/08/2024 19:22 WG2220590 2-Nitrophenol U 0.0140 0.390 1 02/08/2024 19:22 WG2220590 4-Nitrophenol U 0.0122 0.390 1 02/08/2024 19:22 WG2220590 Pentachlorophenol U 0.0105 0.390 1 02/08/2024 19:22 WG2220590 Phenol U 0.0157 0.390 1 02/08/2024 19:22 WG2220590 2,4,6-Trichlorophenol U 0.0125 0.390 1 02/08/2024 19:22 WG2220590 (S) 2-Fluorophenol 68.2 12.0-120 02/08/2024 19:22 WG2220590 (S) Phenol-d5 66.3 10.0-120 02/08/2024 19:22 WG2220590 (S) Nitrobenzene-d5 67.7 10.0-122 02/08/2024 19:22 WG2220590 (S) 2-Fluorobiphenyl 68.1 15.0-120 02/08/2024 19:22 WG2220590 (S) 2,4,6-Tribromophenol 70.4 10.0-127 02/08/2024 19:22 WG2220590 (S) p-Terphenyl-d14 73.5 10.0-120 02/08/2024 19:22 WG2220590 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/16/24 11:51 27 of 89 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/19/24 20:18 27 of 89 SAMPLE RESULTS - 08 L1701794 SB-11 1-2 Collected date/time: 01/30/24 09:15 Total Solids by Method 2540 G-2011 Result Qualifier Dilution Analysis Batch Analyte %date / time Total Solids 70.9 1 02/06/2024 11:02 WG2219977 Volatile Organic Compounds (GC/MS) by Method 8260D Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time Acetone U 0.0685 0.0939 1 02/05/2024 23:25 WG2220500 Acrylonitrile U 0.00678 0.0235 1 02/05/2024 23:25 WG2220500 Benzene U 0.000877 0.00188 1 02/05/2024 23:25 WG2220500 Bromobenzene U 0.00169 0.0235 1 02/05/2024 23:25 WG2220500 Bromodichloromethane U 0.00136 0.00469 1 02/05/2024 23:25 WG2220500 Bromoform U 0.00220 0.0469 1 02/05/2024 23:25 WG2220500 Bromomethane U 0.00370 0.0235 1 02/05/2024 23:25 WG2220500 n-Butylbenzene U 0.00986 0.0235 1 02/05/2024 23:25 WG2220500 sec-Butylbenzene U 0.00541 0.0235 1 02/05/2024 23:25 WG2220500 tert-Butylbenzene U 0.00366 0.00939 1 02/05/2024 23:25 WG2220500 Carbon tetrachloride U 0.00169 0.00939 1 02/05/2024 23:25 WG2220500 Chlorobenzene U 0.000394 0.00469 1 02/05/2024 23:25 WG2220500 Chlorodibromomethane U 0.00115 0.00469 1 02/05/2024 23:25 WG2220500 Chloroethane U 0.00319 0.00939 1 02/05/2024 23:25 WG2220500 Chloroform 0.00406 B J 0.00193 0.00469 1 02/05/2024 23:25 WG2220500 Chloromethane U 0.00817 0.0235 1 02/05/2024 23:25 WG2220500 2-Chlorotoluene U 0.00162 0.00469 1 02/05/2024 23:25 WG2220500 4-Chlorotoluene U 0.000845 0.00939 1 02/05/2024 23:25 WG2220500 1,2-Dibromo-3-Chloropropane U 0.00732 0.0469 1 02/05/2024 23:25 WG2220500 1,2-Dibromoethane U 0.00122 0.00469 1 02/05/2024 23:25 WG2220500 Dibromomethane U 0.00141 0.00939 1 02/05/2024 23:25 WG2220500 1,2-Dichlorobenzene U 0.000798 0.00939 1 02/05/2024 23:25 WG2220500 1,3-Dichlorobenzene U 0.00113 0.00939 1 02/05/2024 23:25 WG2220500 1,4-Dichlorobenzene U 0.00131 0.00939 1 02/05/2024 23:25 WG2220500 Dichlorodifluoromethane U 0.00302 0.00939 1 02/05/2024 23:25 WG2220500 1,1-Dichloroethane U 0.000922 0.00469 1 02/05/2024 23:25 WG2220500 1,2-Dichloroethane U 0.00122 0.00469 1 02/05/2024 23:25 WG2220500 1,1-Dichloroethene U 0.00114 0.00469 1 02/05/2024 23:25 WG2220500 cis-1,2-Dichloroethene U 0.00138 0.00469 1 02/05/2024 23:25 WG2220500 trans-1,2-Dichloroethene U 0.00195 0.00939 1 02/05/2024 23:25 WG2220500 1,2-Dichloropropane U 0.00267 0.00939 1 02/05/2024 23:25 WG2220500 1,1-Dichloropropene U 0.00152 0.00469 1 02/05/2024 23:25 WG2220500 1,3-Dichloropropane U 0.000941 0.00939 1 02/05/2024 23:25 WG2220500 cis-1,3-Dichloropropene U 0.00142 0.00469 1 02/05/2024 23:25 WG2220500 trans-1,3-Dichloropropene U 0.00214 0.00939 1 02/05/2024 23:25 WG2220500 2,2-Dichloropropane U 0.00259 0.00469 1 02/05/2024 23:25 WG2220500 Di-isopropyl ether U 0.000770 0.00188 1 02/05/2024 23:25 WG2220500 Ethylbenzene U 0.00138 0.00469 1 02/05/2024 23:25 WG2220500 Hexachloro-1,3-butadiene U 0.0113 0.0469 1 02/05/2024 23:25 WG2220500 Isopropylbenzene U 0.000798 0.00469 1 02/05/2024 23:25 WG2220500 p-Isopropyltoluene U 0.00479 0.00939 1 02/05/2024 23:25 WG2220500 2-Butanone (MEK)U 0.119 0.188 1 02/05/2024 23:25 WG2220500 Methylene Chloride 0.0166 B J 0.0125 0.0469 1 02/05/2024 23:25 WG2220500 4-Methyl-2-pentanone (MIBK)U 0.00428 0.0469 1 02/05/2024 23:25 WG2220500 Methyl tert-butyl ether U 0.000657 0.00188 1 02/05/2024 23:25 WG2220500 Naphthalene U C3 0.00916 0.0235 1 02/05/2024 23:25 WG2220500 n-Propylbenzene U 0.00178 0.00939 1 02/05/2024 23:25 WG2220500 Styrene U 0.000430 0.0235 1 02/05/2024 23:25 WG2220500 1,1,1,2-Tetrachloroethane U 0.00178 0.00469 1 02/05/2024 23:25 WG2220500 1,1,2,2-Tetrachloroethane U 0.00131 0.00469 1 02/05/2024 23:25 WG2220500 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/16/24 11:51 28 of 89 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/19/24 20:18 28 of 89 SAMPLE RESULTS - 08 L1701794 SB-11 1-2 Collected date/time: 01/30/24 09:15 Volatile Organic Compounds (GC/MS) by Method 8260D Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time 1,1,2-Trichlorotrifluoroethane U 0.00142 0.00469 1 02/05/2024 23:25 WG2220500 Tetrachloroethene U 0.00168 0.00469 1 02/05/2024 23:25 WG2220500 Toluene U 0.00244 0.00939 1 02/05/2024 23:25 WG2220500 1,2,3-Trichlorobenzene U 0.0138 0.0235 1 02/05/2024 23:25 WG2220500 1,2,4-Trichlorobenzene U 0.00826 0.0235 1 02/05/2024 23:25 WG2220500 1,1,1-Trichloroethane U 0.00173 0.00469 1 02/05/2024 23:25 WG2220500 1,1,2-Trichloroethane U 0.00112 0.00469 1 02/05/2024 23:25 WG2220500 Trichloroethene U J4 0.00110 0.00188 1 02/05/2024 23:25 WG2220500 Trichlorofluoromethane U 0.00155 0.00469 1 02/05/2024 23:25 WG2220500 1,2,3-Trichloropropane U 0.00304 0.0235 1 02/05/2024 23:25 WG2220500 1,2,4-Trimethylbenzene U 0.00297 0.00939 1 02/05/2024 23:25 WG2220500 1,2,3-Trimethylbenzene U 0.00297 0.00939 1 02/05/2024 23:25 WG2220500 1,3,5-Trimethylbenzene U 0.00376 0.00939 1 02/05/2024 23:25 WG2220500 Vinyl chloride U 0.00218 0.00469 1 02/05/2024 23:25 WG2220500 Xylenes, Total U 0.00165 0.0122 1 02/05/2024 23:25 WG2220500 (S) Toluene-d8 106 75.0-131 02/05/2024 23:25 WG2220500 (S) 4-Bromofluorobenzene 98.8 67.0-138 02/05/2024 23:25 WG2220500 (S) 1,2-Dichloroethane-d4 117 70.0-130 02/05/2024 23:25 WG2220500 Semi Volatile Organic Compounds (GC/MS) by Method 8270E Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time Acenaphthene U 0.00760 0.0470 1 02/08/2024 19:01 WG2220590 Acenaphthylene U 0.00662 0.0470 1 02/08/2024 19:01 WG2220590 Anthracene U 0.00837 0.0470 1 02/08/2024 19:01 WG2220590 Benzidine U 0.0883 2.36 1 02/08/2024 19:01 WG2220590 Benzo(a)anthracene U 0.00828 0.0470 1 02/08/2024 19:01 WG2220590 Benzo(b)fluoranthene U 0.00876 0.0470 1 02/08/2024 19:01 WG2220590 Benzo(k)fluoranthene U 0.00835 0.0470 1 02/08/2024 19:01 WG2220590 Benzo(g,h,i)perylene U 0.00859 0.0470 1 02/08/2024 19:01 WG2220590 Benzo(a)pyrene U 0.00873 0.0470 1 02/08/2024 19:01 WG2220590 Bis(2-chlorethoxy)methane U 0.0141 0.470 1 02/08/2024 19:01 WG2220590 Bis(2-chloroethyl)ether U 0.0155 0.470 1 02/08/2024 19:01 WG2220590 2,2-Oxybis(1-Chloropropane)U 0.0203 0.470 1 02/08/2024 19:01 WG2220590 4-Bromophenyl-phenylether U 0.0165 0.470 1 02/08/2024 19:01 WG2220590 2-Chloronaphthalene U 0.00825 0.0470 1 02/08/2024 19:01 WG2220590 4-Chlorophenyl-phenylether U 0.0164 0.470 1 02/08/2024 19:01 WG2220590 Chrysene U 0.00934 0.0470 1 02/08/2024 19:01 WG2220590 Dibenz(a,h)anthracene U 0.0130 0.0470 1 02/08/2024 19:01 WG2220590 1,2-Dichlorobenzene U 0.0139 0.470 1 02/08/2024 19:01 WG2220590 1,3-Dichlorobenzene U 0.0142 0.470 1 02/08/2024 19:01 WG2220590 1,4-Dichlorobenzene U 0.0140 0.470 1 02/08/2024 19:01 WG2220590 3,3-Dichlorobenzidine U 0.0174 0.470 1 02/08/2024 19:01 WG2220590 2,4-Dinitrotoluene U 0.0135 0.470 1 02/08/2024 19:01 WG2220590 2,6-Dinitrotoluene U 0.0154 0.470 1 02/08/2024 19:01 WG2220590 Fluoranthene U 0.00848 0.0470 1 02/08/2024 19:01 WG2220590 Fluorene U 0.00765 0.0470 1 02/08/2024 19:01 WG2220590 Hexachlorobenzene U 0.0166 0.470 1 02/08/2024 19:01 WG2220590 Hexachloro-1,3-butadiene U 0.0158 0.470 1 02/08/2024 19:01 WG2220590 Hexachlorocyclopentadiene U 0.0247 0.470 1 02/08/2024 19:01 WG2220590 Hexachloroethane U 0.0185 0.470 1 02/08/2024 19:01 WG2220590 Indeno(1,2,3-cd)pyrene U 0.0133 0.0470 1 02/08/2024 19:01 WG2220590 Isophorone U 0.0144 0.470 1 02/08/2024 19:01 WG2220590 Naphthalene U 0.0118 0.0470 1 02/08/2024 19:01 WG2220590 Nitrobenzene U 0.0164 0.470 1 02/08/2024 19:01 WG2220590 n-Nitrosodimethylamine U 0.0697 0.470 1 02/08/2024 19:01 WG2220590 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/16/24 11:51 29 of 89 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/19/24 20:18 29 of 89 SAMPLE RESULTS - 08 L1701794 SB-11 1-2 Collected date/time: 01/30/24 09:15 Semi Volatile Organic Compounds (GC/MS) by Method 8270E Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time n-Nitrosodiphenylamine U 0.0356 0.470 1 02/08/2024 19:01 WG2220590 n-Nitrosodi-n-propylamine U 0.0157 0.470 1 02/08/2024 19:01 WG2220590 Phenanthrene U 0.00933 0.0470 1 02/08/2024 19:01 WG2220590 Benzylbutyl phthalate U 0.0147 0.470 1 02/08/2024 19:01 WG2220590 Bis(2-ethylhexyl)phthalate U 0.0595 0.470 1 02/08/2024 19:01 WG2220590 Di-n-butyl phthalate U 0.0161 0.470 1 02/08/2024 19:01 WG2220590 Diethyl phthalate U 0.0155 0.470 1 02/08/2024 19:01 WG2220590 Dimethyl phthalate U 0.0996 0.470 1 02/08/2024 19:01 WG2220590 Di-n-octyl phthalate U 0.0317 0.470 1 02/08/2024 19:01 WG2220590 Pyrene U 0.00914 0.0470 1 02/08/2024 19:01 WG2220590 1,2,4-Trichlorobenzene U 0.0147 0.470 1 02/08/2024 19:01 WG2220590 4-Chloro-3-methylphenol U 0.0152 0.470 1 02/08/2024 19:01 WG2220590 2-Chlorophenol U 0.0155 0.470 1 02/08/2024 19:01 WG2220590 2,4-Dichlorophenol U 0.0137 0.470 1 02/08/2024 19:01 WG2220590 2,4-Dimethylphenol U 0.0123 0.470 1 02/08/2024 19:01 WG2220590 4,6-Dinitro-2-methylphenol U 0.107 0.470 1 02/08/2024 19:01 WG2220590 2,4-Dinitrophenol U 0.110 0.470 1 02/08/2024 19:01 WG2220590 2-Nitrophenol U 0.0168 0.470 1 02/08/2024 19:01 WG2220590 4-Nitrophenol U 0.0147 0.470 1 02/08/2024 19:01 WG2220590 Pentachlorophenol U 0.0126 0.470 1 02/08/2024 19:01 WG2220590 Phenol U 0.0189 0.470 1 02/08/2024 19:01 WG2220590 2,4,6-Trichlorophenol U 0.0151 0.470 1 02/08/2024 19:01 WG2220590 (S) 2-Fluorophenol 71.6 12.0-120 02/08/2024 19:01 WG2220590 (S) Phenol-d5 72.2 10.0-120 02/08/2024 19:01 WG2220590 (S) Nitrobenzene-d5 67.2 10.0-122 02/08/2024 19:01 WG2220590 (S) 2-Fluorobiphenyl 68.4 15.0-120 02/08/2024 19:01 WG2220590 (S) 2,4,6-Tribromophenol 76.9 10.0-127 02/08/2024 19:01 WG2220590 (S) p-Terphenyl-d14 75.6 10.0-120 02/08/2024 19:01 WG2220590 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/16/24 11:51 30 of 89 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/19/24 20:18 30 of 89 SAMPLE RESULTS - 09 L1701794 SB-6 0-1 Collected date/time: 01/30/24 14:45 Total Solids by Method 2540 G-2011 Result Qualifier Dilution Analysis Batch Analyte %date / time Total Solids 87.2 1 02/06/2024 11:02 WG2219977 Volatile Organic Compounds (GC/MS) by Method 8260D Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time Acetone U 0.0487 0.0668 1 02/05/2024 23:44 WG2220500 Acrylonitrile U 0.00482 0.0167 1 02/05/2024 23:44 WG2220500 Benzene U 0.000624 0.00134 1 02/05/2024 23:44 WG2220500 Bromobenzene U 0.00120 0.0167 1 02/05/2024 23:44 WG2220500 Bromodichloromethane U 0.000968 0.00334 1 02/05/2024 23:44 WG2220500 Bromoform U 0.00156 0.0334 1 02/05/2024 23:44 WG2220500 Bromomethane U 0.00263 0.0167 1 02/05/2024 23:44 WG2220500 n-Butylbenzene U 0.00701 0.0167 1 02/05/2024 23:44 WG2220500 sec-Butylbenzene U 0.00385 0.0167 1 02/05/2024 23:44 WG2220500 tert-Butylbenzene U 0.00260 0.00668 1 02/05/2024 23:44 WG2220500 Carbon tetrachloride U 0.00120 0.00668 1 02/05/2024 23:44 WG2220500 Chlorobenzene U 0.000280 0.00334 1 02/05/2024 23:44 WG2220500 Chlorodibromomethane U 0.000817 0.00334 1 02/05/2024 23:44 WG2220500 Chloroethane U 0.00227 0.00668 1 02/05/2024 23:44 WG2220500 Chloroform 0.00200 B J 0.00138 0.00334 1 02/05/2024 23:44 WG2220500 Chloromethane U 0.00581 0.0167 1 02/05/2024 23:44 WG2220500 2-Chlorotoluene U 0.00115 0.00334 1 02/05/2024 23:44 WG2220500 4-Chlorotoluene U 0.000601 0.00668 1 02/05/2024 23:44 WG2220500 1,2-Dibromo-3-Chloropropane U 0.00521 0.0334 1 02/05/2024 23:44 WG2220500 1,2-Dibromoethane U 0.000865 0.00334 1 02/05/2024 23:44 WG2220500 Dibromomethane U 0.00100 0.00668 1 02/05/2024 23:44 WG2220500 1,2-Dichlorobenzene U 0.000567 0.00668 1 02/05/2024 23:44 WG2220500 1,3-Dichlorobenzene U 0.000801 0.00668 1 02/05/2024 23:44 WG2220500 1,4-Dichlorobenzene U 0.000935 0.00668 1 02/05/2024 23:44 WG2220500 Dichlorodifluoromethane U 0.00215 0.00668 1 02/05/2024 23:44 WG2220500 1,1-Dichloroethane U 0.000656 0.00334 1 02/05/2024 23:44 WG2220500 1,2-Dichloroethane U 0.000867 0.00334 1 02/05/2024 23:44 WG2220500 1,1-Dichloroethene U 0.000809 0.00334 1 02/05/2024 23:44 WG2220500 cis-1,2-Dichloroethene U 0.000980 0.00334 1 02/05/2024 23:44 WG2220500 trans-1,2-Dichloroethene U 0.00139 0.00668 1 02/05/2024 23:44 WG2220500 1,2-Dichloropropane U 0.00190 0.00668 1 02/05/2024 23:44 WG2220500 1,1-Dichloropropene U 0.00108 0.00334 1 02/05/2024 23:44 WG2220500 1,3-Dichloropropane U 0.000669 0.00668 1 02/05/2024 23:44 WG2220500 cis-1,3-Dichloropropene U 0.00101 0.00334 1 02/05/2024 23:44 WG2220500 trans-1,3-Dichloropropene U 0.00152 0.00668 1 02/05/2024 23:44 WG2220500 2,2-Dichloropropane U 0.00184 0.00334 1 02/05/2024 23:44 WG2220500 Di-isopropyl ether U 0.000547 0.00134 1 02/05/2024 23:44 WG2220500 Ethylbenzene U 0.000984 0.00334 1 02/05/2024 23:44 WG2220500 Hexachloro-1,3-butadiene U 0.00801 0.0334 1 02/05/2024 23:44 WG2220500 Isopropylbenzene U 0.000567 0.00334 1 02/05/2024 23:44 WG2220500 p-Isopropyltoluene U 0.00340 0.00668 1 02/05/2024 23:44 WG2220500 2-Butanone (MEK)U 0.0848 0.134 1 02/05/2024 23:44 WG2220500 Methylene Chloride 0.00989 B J 0.00887 0.0334 1 02/05/2024 23:44 WG2220500 4-Methyl-2-pentanone (MIBK)U 0.00304 0.0334 1 02/05/2024 23:44 WG2220500 Methyl tert-butyl ether U 0.000467 0.00134 1 02/05/2024 23:44 WG2220500 Naphthalene U C3 0.00652 0.0167 1 02/05/2024 23:44 WG2220500 n-Propylbenzene U 0.00127 0.00668 1 02/05/2024 23:44 WG2220500 Styrene U 0.000306 0.0167 1 02/05/2024 23:44 WG2220500 1,1,1,2-Tetrachloroethane U 0.00127 0.00334 1 02/05/2024 23:44 WG2220500 1,1,2,2-Tetrachloroethane U 0.000928 0.00334 1 02/05/2024 23:44 WG2220500 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/16/24 11:51 31 of 89 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/19/24 20:18 31 of 89 SAMPLE RESULTS - 09 L1701794 SB-6 0-1 Collected date/time: 01/30/24 14:45 Volatile Organic Compounds (GC/MS) by Method 8260D Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time 1,1,2-Trichlorotrifluoroethane U 0.00101 0.00334 1 02/05/2024 23:44 WG2220500 Tetrachloroethene 0.00907 0.00120 0.00334 1 02/05/2024 23:44 WG2220500 Toluene 0.00175 J 0.00174 0.00668 1 02/05/2024 23:44 WG2220500 1,2,3-Trichlorobenzene U 0.00979 0.0167 1 02/05/2024 23:44 WG2220500 1,2,4-Trichlorobenzene U 0.00587 0.0167 1 02/05/2024 23:44 WG2220500 1,1,1-Trichloroethane U 0.00123 0.00334 1 02/05/2024 23:44 WG2220500 1,1,2-Trichloroethane U 0.000797 0.00334 1 02/05/2024 23:44 WG2220500 Trichloroethene U J4 0.000780 0.00134 1 02/05/2024 23:44 WG2220500 Trichlorofluoromethane U 0.00110 0.00334 1 02/05/2024 23:44 WG2220500 1,2,3-Trichloropropane U 0.00216 0.0167 1 02/05/2024 23:44 WG2220500 1,2,4-Trimethylbenzene U 0.00211 0.00668 1 02/05/2024 23:44 WG2220500 1,2,3-Trimethylbenzene U 0.00211 0.00668 1 02/05/2024 23:44 WG2220500 1,3,5-Trimethylbenzene U 0.00267 0.00668 1 02/05/2024 23:44 WG2220500 Vinyl chloride U 0.00155 0.00334 1 02/05/2024 23:44 WG2220500 Xylenes, Total 0.00130 J 0.00117 0.00868 1 02/05/2024 23:44 WG2220500 (S) Toluene-d8 105 75.0-131 02/05/2024 23:44 WG2220500 (S) 4-Bromofluorobenzene 99.8 67.0-138 02/05/2024 23:44 WG2220500 (S) 1,2-Dichloroethane-d4 114 70.0-130 02/05/2024 23:44 WG2220500 Semi Volatile Organic Compounds (GC/MS) by Method 8270E Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time Acenaphthene U 0.00618 0.0382 1 02/09/2024 00:09 WG2220590 Acenaphthylene U 0.00538 0.0382 1 02/09/2024 00:09 WG2220590 Anthracene U 0.00680 0.0382 1 02/09/2024 00:09 WG2220590 Benzidine U 0.0718 1.92 1 02/09/2024 00:09 WG2220590 Benzo(a)anthracene U 0.00673 0.0382 1 02/09/2024 00:09 WG2220590 Benzo(b)fluoranthene U 0.00712 0.0382 1 02/09/2024 00:09 WG2220590 Benzo(k)fluoranthene U 0.00679 0.0382 1 02/09/2024 00:09 WG2220590 Benzo(g,h,i)perylene U 0.00699 0.0382 1 02/09/2024 00:09 WG2220590 Benzo(a)pyrene U 0.00710 0.0382 1 02/09/2024 00:09 WG2220590 Bis(2-chlorethoxy)methane U 0.0115 0.382 1 02/09/2024 00:09 WG2220590 Bis(2-chloroethyl)ether U 0.0126 0.382 1 02/09/2024 00:09 WG2220590 2,2-Oxybis(1-Chloropropane)U 0.0165 0.382 1 02/09/2024 00:09 WG2220590 4-Bromophenyl-phenylether U 0.0134 0.382 1 02/09/2024 00:09 WG2220590 2-Chloronaphthalene U 0.00671 0.0382 1 02/09/2024 00:09 WG2220590 4-Chlorophenyl-phenylether U 0.0133 0.382 1 02/09/2024 00:09 WG2220590 Chrysene U 0.00759 0.0382 1 02/09/2024 00:09 WG2220590 Dibenz(a,h)anthracene U 0.0106 0.0382 1 02/09/2024 00:09 WG2220590 1,2-Dichlorobenzene U 0.0113 0.382 1 02/09/2024 00:09 WG2220590 1,3-Dichlorobenzene U 0.0116 0.382 1 02/09/2024 00:09 WG2220590 1,4-Dichlorobenzene U 0.0114 0.382 1 02/09/2024 00:09 WG2220590 3,3-Dichlorobenzidine U 0.0141 0.382 1 02/09/2024 00:09 WG2220590 2,4-Dinitrotoluene U 0.0110 0.382 1 02/09/2024 00:09 WG2220590 2,6-Dinitrotoluene U 0.0125 0.382 1 02/09/2024 00:09 WG2220590 Fluoranthene U 0.00690 0.0382 1 02/09/2024 00:09 WG2220590 Fluorene U 0.00622 0.0382 1 02/09/2024 00:09 WG2220590 Hexachlorobenzene U 0.0135 0.382 1 02/09/2024 00:09 WG2220590 Hexachloro-1,3-butadiene U 0.0128 0.382 1 02/09/2024 00:09 WG2220590 Hexachlorocyclopentadiene U 0.0201 0.382 1 02/09/2024 00:09 WG2220590 Hexachloroethane U 0.0150 0.382 1 02/09/2024 00:09 WG2220590 Indeno(1,2,3-cd)pyrene U 0.0108 0.0382 1 02/09/2024 00:09 WG2220590 Isophorone U 0.0117 0.382 1 02/09/2024 00:09 WG2220590 Naphthalene U 0.00959 0.0382 1 02/09/2024 00:09 WG2220590 Nitrobenzene U 0.0133 0.382 1 02/09/2024 00:09 WG2220590 n-Nitrosodimethylamine U 0.0567 0.382 1 02/09/2024 00:09 WG2220590 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/16/24 11:51 32 of 89 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/19/24 20:18 32 of 89 SAMPLE RESULTS - 09 L1701794 SB-6 0-1 Collected date/time: 01/30/24 14:45 Semi Volatile Organic Compounds (GC/MS) by Method 8270E Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time n-Nitrosodiphenylamine U 0.0289 0.382 1 02/09/2024 00:09 WG2220590 n-Nitrosodi-n-propylamine U 0.0127 0.382 1 02/09/2024 00:09 WG2220590 Phenanthrene U 0.00758 0.0382 1 02/09/2024 00:09 WG2220590 Benzylbutyl phthalate U 0.0119 0.382 1 02/09/2024 00:09 WG2220590 Bis(2-ethylhexyl)phthalate U 0.0484 0.382 1 02/09/2024 00:09 WG2220590 Di-n-butyl phthalate U 0.0131 0.382 1 02/09/2024 00:09 WG2220590 Diethyl phthalate U 0.0126 0.382 1 02/09/2024 00:09 WG2220590 Dimethyl phthalate U 0.0810 0.382 1 02/09/2024 00:09 WG2220590 Di-n-octyl phthalate U 0.0258 0.382 1 02/09/2024 00:09 WG2220590 Pyrene U 0.00743 0.0382 1 02/09/2024 00:09 WG2220590 1,2,4-Trichlorobenzene U 0.0119 0.382 1 02/09/2024 00:09 WG2220590 4-Chloro-3-methylphenol U 0.0124 0.382 1 02/09/2024 00:09 WG2220590 2-Chlorophenol U 0.0126 0.382 1 02/09/2024 00:09 WG2220590 2,4-Dichlorophenol U 0.0111 0.382 1 02/09/2024 00:09 WG2220590 2,4-Dimethylphenol U 0.00998 0.382 1 02/09/2024 00:09 WG2220590 4,6-Dinitro-2-methylphenol U 0.0866 0.382 1 02/09/2024 00:09 WG2220590 2,4-Dinitrophenol U 0.0894 0.382 1 02/09/2024 00:09 WG2220590 2-Nitrophenol U 0.0137 0.382 1 02/09/2024 00:09 WG2220590 4-Nitrophenol U 0.0119 0.382 1 02/09/2024 00:09 WG2220590 Pentachlorophenol U 0.0103 0.382 1 02/09/2024 00:09 WG2220590 Phenol U 0.0154 0.382 1 02/09/2024 00:09 WG2220590 2,4,6-Trichlorophenol U 0.0123 0.382 1 02/09/2024 00:09 WG2220590 (S) 2-Fluorophenol 75.0 12.0-120 02/09/2024 00:09 WG2220590 (S) Phenol-d5 74.1 10.0-120 02/09/2024 00:09 WG2220590 (S) Nitrobenzene-d5 69.8 10.0-122 02/09/2024 00:09 WG2220590 (S) 2-Fluorobiphenyl 70.7 15.0-120 02/09/2024 00:09 WG2220590 (S) 2,4,6-Tribromophenol 80.6 10.0-127 02/09/2024 00:09 WG2220590 (S) p-Terphenyl-d14 78.7 10.0-120 02/09/2024 00:09 WG2220590 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/16/24 11:51 33 of 89 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/19/24 20:18 33 of 89 SAMPLE RESULTS - 10 L1701794 SB-6 1-2 Collected date/time: 01/30/24 14:55 Total Solids by Method 2540 G-2011 Result Qualifier Dilution Analysis Batch Analyte %date / time Total Solids 79.0 1 02/06/2024 11:02 WG2219977 Volatile Organic Compounds (GC/MS) by Method 8260D Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time Acetone U 0.0585 0.0801 1 02/06/2024 00:03 WG2220500 Acrylonitrile U 0.00578 0.0200 1 02/06/2024 00:03 WG2220500 Benzene U 0.000748 0.00160 1 02/06/2024 00:03 WG2220500 Bromobenzene U 0.00144 0.0200 1 02/06/2024 00:03 WG2220500 Bromodichloromethane U 0.00116 0.00400 1 02/06/2024 00:03 WG2220500 Bromoform U 0.00187 0.0400 1 02/06/2024 00:03 WG2220500 Bromomethane U 0.00315 0.0200 1 02/06/2024 00:03 WG2220500 n-Butylbenzene U 0.00841 0.0200 1 02/06/2024 00:03 WG2220500 sec-Butylbenzene U 0.00461 0.0200 1 02/06/2024 00:03 WG2220500 tert-Butylbenzene U 0.00312 0.00801 1 02/06/2024 00:03 WG2220500 Carbon tetrachloride U 0.00144 0.00801 1 02/06/2024 00:03 WG2220500 Chlorobenzene U 0.000336 0.00400 1 02/06/2024 00:03 WG2220500 Chlorodibromomethane U 0.000980 0.00400 1 02/06/2024 00:03 WG2220500 Chloroethane U 0.00272 0.00801 1 02/06/2024 00:03 WG2220500 Chloroform 0.00298 B J 0.00165 0.00400 1 02/06/2024 00:03 WG2220500 Chloromethane U 0.00697 0.0200 1 02/06/2024 00:03 WG2220500 2-Chlorotoluene U 0.00139 0.00400 1 02/06/2024 00:03 WG2220500 4-Chlorotoluene U 0.000721 0.00801 1 02/06/2024 00:03 WG2220500 1,2-Dibromo-3-Chloropropane U 0.00625 0.0400 1 02/06/2024 00:03 WG2220500 1,2-Dibromoethane U 0.00104 0.00400 1 02/06/2024 00:03 WG2220500 Dibromomethane U 0.00120 0.00801 1 02/06/2024 00:03 WG2220500 1,2-Dichlorobenzene U 0.000681 0.00801 1 02/06/2024 00:03 WG2220500 1,3-Dichlorobenzene U 0.000961 0.00801 1 02/06/2024 00:03 WG2220500 1,4-Dichlorobenzene U 0.00112 0.00801 1 02/06/2024 00:03 WG2220500 Dichlorodifluoromethane U 0.00258 0.00801 1 02/06/2024 00:03 WG2220500 1,1-Dichloroethane U 0.000786 0.00400 1 02/06/2024 00:03 WG2220500 1,2-Dichloroethane U 0.00104 0.00400 1 02/06/2024 00:03 WG2220500 1,1-Dichloroethene U 0.000970 0.00400 1 02/06/2024 00:03 WG2220500 cis-1,2-Dichloroethene U 0.00118 0.00400 1 02/06/2024 00:03 WG2220500 trans-1,2-Dichloroethene U 0.00167 0.00801 1 02/06/2024 00:03 WG2220500 1,2-Dichloropropane U 0.00227 0.00801 1 02/06/2024 00:03 WG2220500 1,1-Dichloropropene U 0.00130 0.00400 1 02/06/2024 00:03 WG2220500 1,3-Dichloropropane U 0.000802 0.00801 1 02/06/2024 00:03 WG2220500 cis-1,3-Dichloropropene U 0.00121 0.00400 1 02/06/2024 00:03 WG2220500 trans-1,3-Dichloropropene U 0.00183 0.00801 1 02/06/2024 00:03 WG2220500 2,2-Dichloropropane U 0.00221 0.00400 1 02/06/2024 00:03 WG2220500 Di-isopropyl ether U 0.000657 0.00160 1 02/06/2024 00:03 WG2220500 Ethylbenzene U 0.00118 0.00400 1 02/06/2024 00:03 WG2220500 Hexachloro-1,3-butadiene U 0.00961 0.0400 1 02/06/2024 00:03 WG2220500 Isopropylbenzene U 0.000681 0.00400 1 02/06/2024 00:03 WG2220500 p-Isopropyltoluene U 0.00408 0.00801 1 02/06/2024 00:03 WG2220500 2-Butanone (MEK)U 0.102 0.160 1 02/06/2024 00:03 WG2220500 Methylene Chloride 0.0125 B J 0.0106 0.0400 1 02/06/2024 00:03 WG2220500 4-Methyl-2-pentanone (MIBK)U 0.00365 0.0400 1 02/06/2024 00:03 WG2220500 Methyl tert-butyl ether U 0.000561 0.00160 1 02/06/2024 00:03 WG2220500 Naphthalene U C3 0.00782 0.0200 1 02/06/2024 00:03 WG2220500 n-Propylbenzene U 0.00152 0.00801 1 02/06/2024 00:03 WG2220500 Styrene U 0.000367 0.0200 1 02/06/2024 00:03 WG2220500 1,1,1,2-Tetrachloroethane U 0.00152 0.00400 1 02/06/2024 00:03 WG2220500 1,1,2,2-Tetrachloroethane U 0.00111 0.00400 1 02/06/2024 00:03 WG2220500 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/16/24 11:51 34 of 89 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/19/24 20:18 34 of 89 SAMPLE RESULTS - 10 L1701794 SB-6 1-2 Collected date/time: 01/30/24 14:55 Volatile Organic Compounds (GC/MS) by Method 8260D Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time 1,1,2-Trichlorotrifluoroethane U 0.00121 0.00400 1 02/06/2024 00:03 WG2220500 Tetrachloroethene 0.00448 0.00143 0.00400 1 02/06/2024 00:03 WG2220500 Toluene U 0.00208 0.00801 1 02/06/2024 00:03 WG2220500 1,2,3-Trichlorobenzene U 0.0117 0.0200 1 02/06/2024 00:03 WG2220500 1,2,4-Trichlorobenzene U 0.00705 0.0200 1 02/06/2024 00:03 WG2220500 1,1,1-Trichloroethane U 0.00148 0.00400 1 02/06/2024 00:03 WG2220500 1,1,2-Trichloroethane U 0.000956 0.00400 1 02/06/2024 00:03 WG2220500 Trichloroethene U J4 0.000935 0.00160 1 02/06/2024 00:03 WG2220500 Trichlorofluoromethane U 0.00132 0.00400 1 02/06/2024 00:03 WG2220500 1,2,3-Trichloropropane U 0.00259 0.0200 1 02/06/2024 00:03 WG2220500 1,2,4-Trimethylbenzene U 0.00253 0.00801 1 02/06/2024 00:03 WG2220500 1,2,3-Trimethylbenzene U 0.00253 0.00801 1 02/06/2024 00:03 WG2220500 1,3,5-Trimethylbenzene U 0.00320 0.00801 1 02/06/2024 00:03 WG2220500 Vinyl chloride U 0.00186 0.00400 1 02/06/2024 00:03 WG2220500 Xylenes, Total U 0.00141 0.0104 1 02/06/2024 00:03 WG2220500 (S) Toluene-d8 105 75.0-131 02/06/2024 00:03 WG2220500 (S) 4-Bromofluorobenzene 97.4 67.0-138 02/06/2024 00:03 WG2220500 (S) 1,2-Dichloroethane-d4 116 70.0-130 02/06/2024 00:03 WG2220500 Semi Volatile Organic Compounds (GC/MS) by Method 8270E Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time Acenaphthene U 0.00682 0.0422 1 02/08/2024 20:03 WG2220590 Acenaphthylene U 0.00594 0.0422 1 02/08/2024 20:03 WG2220590 Anthracene U 0.00751 0.0422 1 02/08/2024 20:03 WG2220590 Benzidine U 0.0792 2.11 1 02/08/2024 20:03 WG2220590 Benzo(a)anthracene U 0.00743 0.0422 1 02/08/2024 20:03 WG2220590 Benzo(b)fluoranthene U 0.00786 0.0422 1 02/08/2024 20:03 WG2220590 Benzo(k)fluoranthene U 0.00749 0.0422 1 02/08/2024 20:03 WG2220590 Benzo(g,h,i)perylene U 0.00771 0.0422 1 02/08/2024 20:03 WG2220590 Benzo(a)pyrene U 0.00784 0.0422 1 02/08/2024 20:03 WG2220590 Bis(2-chlorethoxy)methane U 0.0127 0.422 1 02/08/2024 20:03 WG2220590 Bis(2-chloroethyl)ether U 0.0139 0.422 1 02/08/2024 20:03 WG2220590 2,2-Oxybis(1-Chloropropane)U 0.0182 0.422 1 02/08/2024 20:03 WG2220590 4-Bromophenyl-phenylether U 0.0148 0.422 1 02/08/2024 20:03 WG2220590 2-Chloronaphthalene U 0.00740 0.0422 1 02/08/2024 20:03 WG2220590 4-Chlorophenyl-phenylether U 0.0147 0.422 1 02/08/2024 20:03 WG2220590 Chrysene U 0.00838 0.0422 1 02/08/2024 20:03 WG2220590 Dibenz(a,h)anthracene U 0.0117 0.0422 1 02/08/2024 20:03 WG2220590 1,2-Dichlorobenzene U 0.0125 0.422 1 02/08/2024 20:03 WG2220590 1,3-Dichlorobenzene U 0.0128 0.422 1 02/08/2024 20:03 WG2220590 1,4-Dichlorobenzene U 0.0125 0.422 1 02/08/2024 20:03 WG2220590 3,3-Dichlorobenzidine U 0.0156 0.422 1 02/08/2024 20:03 WG2220590 2,4-Dinitrotoluene U 0.0121 0.422 1 02/08/2024 20:03 WG2220590 2,6-Dinitrotoluene U 0.0138 0.422 1 02/08/2024 20:03 WG2220590 Fluoranthene U 0.00761 0.0422 1 02/08/2024 20:03 WG2220590 Fluorene U 0.00686 0.0422 1 02/08/2024 20:03 WG2220590 Hexachlorobenzene U 0.0149 0.422 1 02/08/2024 20:03 WG2220590 Hexachloro-1,3-butadiene U 0.0142 0.422 1 02/08/2024 20:03 WG2220590 Hexachlorocyclopentadiene U 0.0222 0.422 1 02/08/2024 20:03 WG2220590 Hexachloroethane U 0.0166 0.422 1 02/08/2024 20:03 WG2220590 Indeno(1,2,3-cd)pyrene U 0.0119 0.0422 1 02/08/2024 20:03 WG2220590 Isophorone U 0.0129 0.422 1 02/08/2024 20:03 WG2220590 Naphthalene 0.0261 J 0.0106 0.0422 1 02/08/2024 20:03 WG2220590 Nitrobenzene U 0.0147 0.422 1 02/08/2024 20:03 WG2220590 n-Nitrosodimethylamine U 0.0625 0.422 1 02/08/2024 20:03 WG2220590 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/16/24 11:51 35 of 89 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/19/24 20:18 35 of 89 SAMPLE RESULTS - 10 L1701794 SB-6 1-2 Collected date/time: 01/30/24 14:55 Semi Volatile Organic Compounds (GC/MS) by Method 8270E Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time n-Nitrosodiphenylamine U 0.0319 0.422 1 02/08/2024 20:03 WG2220590 n-Nitrosodi-n-propylamine U 0.0141 0.422 1 02/08/2024 20:03 WG2220590 Phenanthrene U 0.00837 0.0422 1 02/08/2024 20:03 WG2220590 Benzylbutyl phthalate U 0.0132 0.422 1 02/08/2024 20:03 WG2220590 Bis(2-ethylhexyl)phthalate U 0.0534 0.422 1 02/08/2024 20:03 WG2220590 Di-n-butyl phthalate U 0.0144 0.422 1 02/08/2024 20:03 WG2220590 Diethyl phthalate U 0.0139 0.422 1 02/08/2024 20:03 WG2220590 Dimethyl phthalate U 0.0894 0.422 1 02/08/2024 20:03 WG2220590 Di-n-octyl phthalate U 0.0285 0.422 1 02/08/2024 20:03 WG2220590 Pyrene U 0.00820 0.0422 1 02/08/2024 20:03 WG2220590 1,2,4-Trichlorobenzene U 0.0132 0.422 1 02/08/2024 20:03 WG2220590 4-Chloro-3-methylphenol U 0.0137 0.422 1 02/08/2024 20:03 WG2220590 2-Chlorophenol U 0.0139 0.422 1 02/08/2024 20:03 WG2220590 2,4-Dichlorophenol U 0.0123 0.422 1 02/08/2024 20:03 WG2220590 2,4-Dimethylphenol U 0.0110 0.422 1 02/08/2024 20:03 WG2220590 4,6-Dinitro-2-methylphenol U 0.0956 0.422 1 02/08/2024 20:03 WG2220590 2,4-Dinitrophenol U 0.0986 0.422 1 02/08/2024 20:03 WG2220590 2-Nitrophenol U 0.0151 0.422 1 02/08/2024 20:03 WG2220590 4-Nitrophenol U 0.0132 0.422 1 02/08/2024 20:03 WG2220590 Pentachlorophenol U 0.0113 0.422 1 02/08/2024 20:03 WG2220590 Phenol U 0.0170 0.422 1 02/08/2024 20:03 WG2220590 2,4,6-Trichlorophenol U 0.0135 0.422 1 02/08/2024 20:03 WG2220590 (S) 2-Fluorophenol 72.8 12.0-120 02/08/2024 20:03 WG2220590 (S) Phenol-d5 69.3 10.0-120 02/08/2024 20:03 WG2220590 (S) Nitrobenzene-d5 63.1 10.0-122 02/08/2024 20:03 WG2220590 (S) 2-Fluorobiphenyl 66.2 15.0-120 02/08/2024 20:03 WG2220590 (S) 2,4,6-Tribromophenol 70.8 10.0-127 02/08/2024 20:03 WG2220590 (S) p-Terphenyl-d14 77.0 10.0-120 02/08/2024 20:03 WG2220590 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/16/24 11:51 36 of 89 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/19/24 20:18 36 of 89 SAMPLE RESULTS - 11 L1701794 SB-4 0-1 Collected date/time: 01/31/24 10:45 Total Solids by Method 2540 G-2011 Result Qualifier Dilution Analysis Batch Analyte %date / time Total Solids 74.7 1 02/06/2024 11:02 WG2219977 Volatile Organic Compounds (GC/MS) by Method 8260D Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time Acetone U 0.0620 0.0849 1 02/06/2024 00:23 WG2220500 Acrylonitrile U 0.00613 0.0212 1 02/06/2024 00:23 WG2220500 Benzene U 0.000793 0.00170 1 02/06/2024 00:23 WG2220500 Bromobenzene U 0.00153 0.0212 1 02/06/2024 00:23 WG2220500 Bromodichloromethane U 0.00123 0.00425 1 02/06/2024 00:23 WG2220500 Bromoform U 0.00199 0.0425 1 02/06/2024 00:23 WG2220500 Bromomethane U 0.00335 0.0212 1 02/06/2024 00:23 WG2220500 n-Butylbenzene U 0.00892 0.0212 1 02/06/2024 00:23 WG2220500 sec-Butylbenzene U 0.00489 0.0212 1 02/06/2024 00:23 WG2220500 tert-Butylbenzene U 0.00331 0.00849 1 02/06/2024 00:23 WG2220500 Carbon tetrachloride U 0.00152 0.00849 1 02/06/2024 00:23 WG2220500 Chlorobenzene U 0.000357 0.00425 1 02/06/2024 00:23 WG2220500 Chlorodibromomethane U 0.00104 0.00425 1 02/06/2024 00:23 WG2220500 Chloroethane U 0.00289 0.00849 1 02/06/2024 00:23 WG2220500 Chloroform 0.00328 B J 0.00175 0.00425 1 02/06/2024 00:23 WG2220500 Chloromethane U 0.00739 0.0212 1 02/06/2024 00:23 WG2220500 2-Chlorotoluene U 0.00147 0.00425 1 02/06/2024 00:23 WG2220500 4-Chlorotoluene U 0.000764 0.00849 1 02/06/2024 00:23 WG2220500 1,2-Dibromo-3-Chloropropane U 0.00662 0.0425 1 02/06/2024 00:23 WG2220500 1,2-Dibromoethane U 0.00110 0.00425 1 02/06/2024 00:23 WG2220500 Dibromomethane U 0.00127 0.00849 1 02/06/2024 00:23 WG2220500 1,2-Dichlorobenzene U 0.000722 0.00849 1 02/06/2024 00:23 WG2220500 1,3-Dichlorobenzene U 0.00102 0.00849 1 02/06/2024 00:23 WG2220500 1,4-Dichlorobenzene U 0.00119 0.00849 1 02/06/2024 00:23 WG2220500 Dichlorodifluoromethane U 0.00273 0.00849 1 02/06/2024 00:23 WG2220500 1,1-Dichloroethane U 0.000834 0.00425 1 02/06/2024 00:23 WG2220500 1,2-Dichloroethane U 0.00110 0.00425 1 02/06/2024 00:23 WG2220500 1,1-Dichloroethene U 0.00103 0.00425 1 02/06/2024 00:23 WG2220500 cis-1,2-Dichloroethene U 0.00125 0.00425 1 02/06/2024 00:23 WG2220500 trans-1,2-Dichloroethene U 0.00177 0.00849 1 02/06/2024 00:23 WG2220500 1,2-Dichloropropane U 0.00241 0.00849 1 02/06/2024 00:23 WG2220500 1,1-Dichloropropene U 0.00137 0.00425 1 02/06/2024 00:23 WG2220500 1,3-Dichloropropane U 0.000851 0.00849 1 02/06/2024 00:23 WG2220500 cis-1,3-Dichloropropene U 0.00129 0.00425 1 02/06/2024 00:23 WG2220500 trans-1,3-Dichloropropene U 0.00194 0.00849 1 02/06/2024 00:23 WG2220500 2,2-Dichloropropane U 0.00234 0.00425 1 02/06/2024 00:23 WG2220500 Di-isopropyl ether U 0.000696 0.00170 1 02/06/2024 00:23 WG2220500 Ethylbenzene U 0.00125 0.00425 1 02/06/2024 00:23 WG2220500 Hexachloro-1,3-butadiene U 0.0102 0.0425 1 02/06/2024 00:23 WG2220500 Isopropylbenzene U 0.000722 0.00425 1 02/06/2024 00:23 WG2220500 p-Isopropyltoluene U 0.00433 0.00849 1 02/06/2024 00:23 WG2220500 2-Butanone (MEK)U 0.108 0.170 1 02/06/2024 00:23 WG2220500 Methylene Chloride 0.0187 B J 0.0113 0.0425 1 02/06/2024 00:23 WG2220500 4-Methyl-2-pentanone (MIBK)U 0.00387 0.0425 1 02/06/2024 00:23 WG2220500 Methyl tert-butyl ether U 0.000594 0.00170 1 02/06/2024 00:23 WG2220500 Naphthalene U C3 0.00829 0.0212 1 02/06/2024 00:23 WG2220500 n-Propylbenzene U 0.00161 0.00849 1 02/06/2024 00:23 WG2220500 Styrene U 0.000389 0.0212 1 02/06/2024 00:23 WG2220500 1,1,1,2-Tetrachloroethane U 0.00161 0.00425 1 02/06/2024 00:23 WG2220500 1,1,2,2-Tetrachloroethane U 0.00118 0.00425 1 02/06/2024 00:23 WG2220500 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/16/24 11:51 37 of 89 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/19/24 20:18 37 of 89 SAMPLE RESULTS - 11 L1701794 SB-4 0-1 Collected date/time: 01/31/24 10:45 Volatile Organic Compounds (GC/MS) by Method 8260D Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time 1,1,2-Trichlorotrifluoroethane U 0.00128 0.00425 1 02/06/2024 00:23 WG2220500 Tetrachloroethene U 0.00152 0.00425 1 02/06/2024 00:23 WG2220500 Toluene U 0.00221 0.00849 1 02/06/2024 00:23 WG2220500 1,2,3-Trichlorobenzene U 0.0124 0.0212 1 02/06/2024 00:23 WG2220500 1,2,4-Trichlorobenzene U 0.00747 0.0212 1 02/06/2024 00:23 WG2220500 1,1,1-Trichloroethane U 0.00157 0.00425 1 02/06/2024 00:23 WG2220500 1,1,2-Trichloroethane U 0.00101 0.00425 1 02/06/2024 00:23 WG2220500 Trichloroethene U J4 0.000992 0.00170 1 02/06/2024 00:23 WG2220500 Trichlorofluoromethane U 0.00140 0.00425 1 02/06/2024 00:23 WG2220500 1,2,3-Trichloropropane U 0.00275 0.0212 1 02/06/2024 00:23 WG2220500 1,2,4-Trimethylbenzene U 0.00268 0.00849 1 02/06/2024 00:23 WG2220500 1,2,3-Trimethylbenzene U 0.00268 0.00849 1 02/06/2024 00:23 WG2220500 1,3,5-Trimethylbenzene U 0.00340 0.00849 1 02/06/2024 00:23 WG2220500 Vinyl chloride U 0.00197 0.00425 1 02/06/2024 00:23 WG2220500 Xylenes, Total U 0.00149 0.0110 1 02/06/2024 00:23 WG2220500 (S) Toluene-d8 104 75.0-131 02/06/2024 00:23 WG2220500 (S) 4-Bromofluorobenzene 97.2 67.0-138 02/06/2024 00:23 WG2220500 (S) 1,2-Dichloroethane-d4 116 70.0-130 02/06/2024 00:23 WG2220500 Semi Volatile Organic Compounds (GC/MS) by Method 8270E Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time Acenaphthene U 0.00722 0.0446 1 02/15/2024 06:11 WG2220590 Acenaphthylene U 0.00628 0.0446 1 02/15/2024 06:11 WG2220590 Anthracene U 0.00794 0.0446 1 02/15/2024 06:11 WG2220590 Benzidine U 0.0838 2.24 1 02/15/2024 06:11 WG2220590 Benzo(a)anthracene U 0.00786 0.0446 1 02/15/2024 06:11 WG2220590 Benzo(b)fluoranthene U 0.00832 0.0446 1 02/15/2024 06:11 WG2220590 Benzo(k)fluoranthene U 0.00793 0.0446 1 02/15/2024 06:11 WG2220590 Benzo(g,h,i)perylene U 0.00815 0.0446 1 02/15/2024 06:11 WG2220590 Benzo(a)pyrene U 0.00829 0.0446 1 02/15/2024 06:11 WG2220590 Bis(2-chlorethoxy)methane U 0.0134 0.446 1 02/15/2024 06:11 WG2220590 Bis(2-chloroethyl)ether U 0.0147 0.446 1 02/15/2024 06:11 WG2220590 2,2-Oxybis(1-Chloropropane)U 0.0193 0.446 1 02/15/2024 06:11 WG2220590 4-Bromophenyl-phenylether U 0.0157 0.446 1 02/15/2024 06:11 WG2220590 2-Chloronaphthalene U 0.00783 0.0446 1 02/15/2024 06:11 WG2220590 4-Chlorophenyl-phenylether U 0.0155 0.446 1 02/15/2024 06:11 WG2220590 Chrysene U 0.00886 0.0446 1 02/15/2024 06:11 WG2220590 Dibenz(a,h)anthracene U 0.0124 0.0446 1 02/15/2024 06:11 WG2220590 1,2-Dichlorobenzene U 0.0132 0.446 1 02/15/2024 06:11 WG2220590 1,3-Dichlorobenzene U 0.0135 0.446 1 02/15/2024 06:11 WG2220590 1,4-Dichlorobenzene U 0.0133 0.446 1 02/15/2024 06:11 WG2220590 3,3-Dichlorobenzidine U 0.0165 0.446 1 02/15/2024 06:11 WG2220590 2,4-Dinitrotoluene U 0.0128 0.446 1 02/15/2024 06:11 WG2220590 2,6-Dinitrotoluene U 0.0146 0.446 1 02/15/2024 06:11 WG2220590 Fluoranthene U 0.00805 0.0446 1 02/15/2024 06:11 WG2220590 Fluorene U 0.00726 0.0446 1 02/15/2024 06:11 WG2220590 Hexachlorobenzene U 0.0158 0.446 1 02/15/2024 06:11 WG2220590 Hexachloro-1,3-butadiene U 0.0150 0.446 1 02/15/2024 06:11 WG2220590 Hexachlorocyclopentadiene U 0.0234 0.446 1 02/15/2024 06:11 WG2220590 Hexachloroethane U 0.0175 0.446 1 02/15/2024 06:11 WG2220590 Indeno(1,2,3-cd)pyrene U 0.0126 0.0446 1 02/15/2024 06:11 WG2220590 Isophorone U 0.0137 0.446 1 02/15/2024 06:11 WG2220590 Naphthalene U 0.0112 0.0446 1 02/15/2024 06:11 WG2220590 Nitrobenzene U 0.0155 0.446 1 02/15/2024 06:11 WG2220590 n-Nitrosodimethylamine U 0.0662 0.446 1 02/15/2024 06:11 WG2220590 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/16/24 11:51 38 of 89 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/19/24 20:18 38 of 89 SAMPLE RESULTS - 11 L1701794 SB-4 0-1 Collected date/time: 01/31/24 10:45 Semi Volatile Organic Compounds (GC/MS) by Method 8270E Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time n-Nitrosodiphenylamine U 0.0337 0.446 1 02/15/2024 06:11 WG2220590 n-Nitrosodi-n-propylamine U 0.0149 0.446 1 02/15/2024 06:11 WG2220590 Phenanthrene U 0.00885 0.0446 1 02/15/2024 06:11 WG2220590 Benzylbutyl phthalate U 0.0139 0.446 1 02/15/2024 06:11 WG2220590 Bis(2-ethylhexyl)phthalate U 0.0565 0.446 1 02/15/2024 06:11 WG2220590 Di-n-butyl phthalate U 0.0153 0.446 1 02/15/2024 06:11 WG2220590 Diethyl phthalate U 0.0147 0.446 1 02/15/2024 06:11 WG2220590 Dimethyl phthalate U 0.0945 0.446 1 02/15/2024 06:11 WG2220590 Di-n-octyl phthalate U 0.0301 0.446 1 02/15/2024 06:11 WG2220590 Pyrene U 0.00868 0.0446 1 02/15/2024 06:11 WG2220590 1,2,4-Trichlorobenzene U 0.0139 0.446 1 02/15/2024 06:11 WG2220590 4-Chloro-3-methylphenol U 0.0145 0.446 1 02/15/2024 06:11 WG2220590 2-Chlorophenol U 0.0147 0.446 1 02/15/2024 06:11 WG2220590 2,4-Dichlorophenol U 0.0130 0.446 1 02/15/2024 06:11 WG2220590 2,4-Dimethylphenol U 0.0116 0.446 1 02/15/2024 06:11 WG2220590 4,6-Dinitro-2-methylphenol U 0.101 0.446 1 02/15/2024 06:11 WG2220590 2,4-Dinitrophenol U 0.104 0.446 1 02/15/2024 06:11 WG2220590 2-Nitrophenol U 0.0159 0.446 1 02/15/2024 06:11 WG2220590 4-Nitrophenol U 0.0139 0.446 1 02/15/2024 06:11 WG2220590 Pentachlorophenol U 0.0120 0.446 1 02/15/2024 06:11 WG2220590 Phenol U 0.0179 0.446 1 02/15/2024 06:11 WG2220590 2,4,6-Trichlorophenol U 0.0143 0.446 1 02/15/2024 06:11 WG2220590 (S) 2-Fluorophenol 67.8 12.0-120 02/15/2024 06:11 WG2220590 (S) Phenol-d5 60.9 10.0-120 02/15/2024 06:11 WG2220590 (S) Nitrobenzene-d5 54.4 10.0-122 02/15/2024 06:11 WG2220590 (S) 2-Fluorobiphenyl 64.1 15.0-120 02/15/2024 06:11 WG2220590 (S) 2,4,6-Tribromophenol 84.8 10.0-127 02/15/2024 06:11 WG2220590 (S) p-Terphenyl-d14 71.2 10.0-120 02/15/2024 06:11 WG2220590 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/16/24 11:51 39 of 89 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/19/24 20:18 39 of 89 SAMPLE RESULTS - 12 L1701794 SB-4 2-3 Collected date/time: 01/31/24 10:50 Total Solids by Method 2540 G-2011 Result Qualifier Dilution Analysis Batch Analyte %date / time Total Solids 74.5 1 02/06/2024 15:26 WG2220127 Volatile Organic Compounds (GC/MS) by Method 8260D Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time Acetone U 0.0623 0.0854 1 02/06/2024 00:42 WG2220500 Acrylonitrile U 0.00616 0.0213 1 02/06/2024 00:42 WG2220500 Benzene U 0.000797 0.00171 1 02/06/2024 00:42 WG2220500 Bromobenzene U 0.00154 0.0213 1 02/06/2024 00:42 WG2220500 Bromodichloromethane U 0.00124 0.00427 1 02/06/2024 00:42 WG2220500 Bromoform U 0.00200 0.0427 1 02/06/2024 00:42 WG2220500 Bromomethane U 0.00336 0.0213 1 02/06/2024 00:42 WG2220500 n-Butylbenzene U 0.00896 0.0213 1 02/06/2024 00:42 WG2220500 sec-Butylbenzene U 0.00492 0.0213 1 02/06/2024 00:42 WG2220500 tert-Butylbenzene U 0.00333 0.00854 1 02/06/2024 00:42 WG2220500 Carbon tetrachloride U 0.00153 0.00854 1 02/06/2024 00:42 WG2220500 Chlorobenzene U 0.000358 0.00427 1 02/06/2024 00:42 WG2220500 Chlorodibromomethane U 0.00104 0.00427 1 02/06/2024 00:42 WG2220500 Chloroethane U 0.00290 0.00854 1 02/06/2024 00:42 WG2220500 Chloroform 0.00318 B J 0.00176 0.00427 1 02/06/2024 00:42 WG2220500 Chloromethane U 0.00743 0.0213 1 02/06/2024 00:42 WG2220500 2-Chlorotoluene U 0.00148 0.00427 1 02/06/2024 00:42 WG2220500 4-Chlorotoluene U 0.000768 0.00854 1 02/06/2024 00:42 WG2220500 1,2-Dibromo-3-Chloropropane U 0.00666 0.0427 1 02/06/2024 00:42 WG2220500 1,2-Dibromoethane U 0.00111 0.00427 1 02/06/2024 00:42 WG2220500 Dibromomethane U 0.00128 0.00854 1 02/06/2024 00:42 WG2220500 1,2-Dichlorobenzene U 0.000726 0.00854 1 02/06/2024 00:42 WG2220500 1,3-Dichlorobenzene U 0.00102 0.00854 1 02/06/2024 00:42 WG2220500 1,4-Dichlorobenzene U 0.00119 0.00854 1 02/06/2024 00:42 WG2220500 Dichlorodifluoromethane U 0.00275 0.00854 1 02/06/2024 00:42 WG2220500 1,1-Dichloroethane U 0.000838 0.00427 1 02/06/2024 00:42 WG2220500 1,2-Dichloroethane U 0.00111 0.00427 1 02/06/2024 00:42 WG2220500 1,1-Dichloroethene U 0.00103 0.00427 1 02/06/2024 00:42 WG2220500 cis-1,2-Dichloroethene U 0.00125 0.00427 1 02/06/2024 00:42 WG2220500 trans-1,2-Dichloroethene U 0.00178 0.00854 1 02/06/2024 00:42 WG2220500 1,2-Dichloropropane U 0.00242 0.00854 1 02/06/2024 00:42 WG2220500 1,1-Dichloropropene U 0.00138 0.00427 1 02/06/2024 00:42 WG2220500 1,3-Dichloropropane U 0.000855 0.00854 1 02/06/2024 00:42 WG2220500 cis-1,3-Dichloropropene U 0.00129 0.00427 1 02/06/2024 00:42 WG2220500 trans-1,3-Dichloropropene U 0.00195 0.00854 1 02/06/2024 00:42 WG2220500 2,2-Dichloropropane U 0.00236 0.00427 1 02/06/2024 00:42 WG2220500 Di-isopropyl ether U 0.000700 0.00171 1 02/06/2024 00:42 WG2220500 Ethylbenzene U 0.00126 0.00427 1 02/06/2024 00:42 WG2220500 Hexachloro-1,3-butadiene U 0.0102 0.0427 1 02/06/2024 00:42 WG2220500 Isopropylbenzene U 0.000726 0.00427 1 02/06/2024 00:42 WG2220500 p-Isopropyltoluene U 0.00435 0.00854 1 02/06/2024 00:42 WG2220500 2-Butanone (MEK)U 0.108 0.171 1 02/06/2024 00:42 WG2220500 Methylene Chloride 0.0151 B J 0.0113 0.0427 1 02/06/2024 00:42 WG2220500 4-Methyl-2-pentanone (MIBK)U 0.00389 0.0427 1 02/06/2024 00:42 WG2220500 Methyl tert-butyl ether U 0.000597 0.00171 1 02/06/2024 00:42 WG2220500 Naphthalene U C3 0.00833 0.0213 1 02/06/2024 00:42 WG2220500 n-Propylbenzene U 0.00162 0.00854 1 02/06/2024 00:42 WG2220500 Styrene U 0.000391 0.0213 1 02/06/2024 00:42 WG2220500 1,1,1,2-Tetrachloroethane U 0.00162 0.00427 1 02/06/2024 00:42 WG2220500 1,1,2,2-Tetrachloroethane U 0.00119 0.00427 1 02/06/2024 00:42 WG2220500 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/16/24 11:51 40 of 89 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/19/24 20:18 40 of 89 SAMPLE RESULTS - 12 L1701794 SB-4 2-3 Collected date/time: 01/31/24 10:50 Volatile Organic Compounds (GC/MS) by Method 8260D Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time 1,1,2-Trichlorotrifluoroethane U 0.00129 0.00427 1 02/06/2024 00:42 WG2220500 Tetrachloroethene U 0.00153 0.00427 1 02/06/2024 00:42 WG2220500 Toluene U 0.00222 0.00854 1 02/06/2024 00:42 WG2220500 1,2,3-Trichlorobenzene U 0.0125 0.0213 1 02/06/2024 00:42 WG2220500 1,2,4-Trichlorobenzene U 0.00751 0.0213 1 02/06/2024 00:42 WG2220500 1,1,1-Trichloroethane U 0.00158 0.00427 1 02/06/2024 00:42 WG2220500 1,1,2-Trichloroethane U 0.00102 0.00427 1 02/06/2024 00:42 WG2220500 Trichloroethene U J4 0.000997 0.00171 1 02/06/2024 00:42 WG2220500 Trichlorofluoromethane U 0.00141 0.00427 1 02/06/2024 00:42 WG2220500 1,2,3-Trichloropropane U 0.00277 0.0213 1 02/06/2024 00:42 WG2220500 1,2,4-Trimethylbenzene U 0.00270 0.00854 1 02/06/2024 00:42 WG2220500 1,2,3-Trimethylbenzene U 0.00270 0.00854 1 02/06/2024 00:42 WG2220500 1,3,5-Trimethylbenzene U 0.00341 0.00854 1 02/06/2024 00:42 WG2220500 Vinyl chloride U 0.00198 0.00427 1 02/06/2024 00:42 WG2220500 Xylenes, Total U 0.00150 0.0111 1 02/06/2024 00:42 WG2220500 (S) Toluene-d8 102 75.0-131 02/06/2024 00:42 WG2220500 (S) 4-Bromofluorobenzene 95.6 67.0-138 02/06/2024 00:42 WG2220500 (S) 1,2-Dichloroethane-d4 118 70.0-130 02/06/2024 00:42 WG2220500 Semi Volatile Organic Compounds (GC/MS) by Method 8270E Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time Acenaphthene U 0.00724 0.0447 1 02/08/2024 20:23 WG2220590 Acenaphthylene U 0.00630 0.0447 1 02/08/2024 20:23 WG2220590 Anthracene U 0.00796 0.0447 1 02/08/2024 20:23 WG2220590 Benzidine U 0.0841 2.24 1 02/08/2024 20:23 WG2220590 Benzo(a)anthracene U 0.00788 0.0447 1 02/08/2024 20:23 WG2220590 Benzo(b)fluoranthene U 0.00834 0.0447 1 02/08/2024 20:23 WG2220590 Benzo(k)fluoranthene U 0.00795 0.0447 1 02/08/2024 20:23 WG2220590 Benzo(g,h,i)perylene U 0.00818 0.0447 1 02/08/2024 20:23 WG2220590 Benzo(a)pyrene U 0.00831 0.0447 1 02/08/2024 20:23 WG2220590 Bis(2-chlorethoxy)methane U 0.0134 0.447 1 02/08/2024 20:23 WG2220590 Bis(2-chloroethyl)ether U 0.0148 0.447 1 02/08/2024 20:23 WG2220590 2,2-Oxybis(1-Chloropropane)U 0.0193 0.447 1 02/08/2024 20:23 WG2220590 4-Bromophenyl-phenylether U 0.0157 0.447 1 02/08/2024 20:23 WG2220590 2-Chloronaphthalene U 0.00786 0.0447 1 02/08/2024 20:23 WG2220590 4-Chlorophenyl-phenylether U 0.0156 0.447 1 02/08/2024 20:23 WG2220590 Chrysene U 0.00889 0.0447 1 02/08/2024 20:23 WG2220590 Dibenz(a,h)anthracene U 0.0124 0.0447 1 02/08/2024 20:23 WG2220590 1,2-Dichlorobenzene U 0.0133 0.447 1 02/08/2024 20:23 WG2220590 1,3-Dichlorobenzene U 0.0136 0.447 1 02/08/2024 20:23 WG2220590 1,4-Dichlorobenzene U 0.0133 0.447 1 02/08/2024 20:23 WG2220590 3,3-Dichlorobenzidine U 0.0165 0.447 1 02/08/2024 20:23 WG2220590 2,4-Dinitrotoluene U 0.0128 0.447 1 02/08/2024 20:23 WG2220590 2,6-Dinitrotoluene U 0.0146 0.447 1 02/08/2024 20:23 WG2220590 Fluoranthene U 0.00807 0.0447 1 02/08/2024 20:23 WG2220590 Fluorene U 0.00728 0.0447 1 02/08/2024 20:23 WG2220590 Hexachlorobenzene U 0.0158 0.447 1 02/08/2024 20:23 WG2220590 Hexachloro-1,3-butadiene U 0.0150 0.447 1 02/08/2024 20:23 WG2220590 Hexachlorocyclopentadiene U 0.0235 0.447 1 02/08/2024 20:23 WG2220590 Hexachloroethane U 0.0176 0.447 1 02/08/2024 20:23 WG2220590 Indeno(1,2,3-cd)pyrene U 0.0126 0.0447 1 02/08/2024 20:23 WG2220590 Isophorone U 0.0137 0.447 1 02/08/2024 20:23 WG2220590 Naphthalene U 0.0112 0.0447 1 02/08/2024 20:23 WG2220590 Nitrobenzene U 0.0156 0.447 1 02/08/2024 20:23 WG2220590 n-Nitrosodimethylamine U 0.0663 0.447 1 02/08/2024 20:23 WG2220590 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/16/24 11:51 41 of 89 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/19/24 20:18 41 of 89 SAMPLE RESULTS - 12 L1701794 SB-4 2-3 Collected date/time: 01/31/24 10:50 Semi Volatile Organic Compounds (GC/MS) by Method 8270E Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time n-Nitrosodiphenylamine U 0.0338 0.447 1 02/08/2024 20:23 WG2220590 n-Nitrosodi-n-propylamine U 0.0149 0.447 1 02/08/2024 20:23 WG2220590 Phenanthrene U 0.00888 0.0447 1 02/08/2024 20:23 WG2220590 Benzylbutyl phthalate U 0.0140 0.447 1 02/08/2024 20:23 WG2220590 Bis(2-ethylhexyl)phthalate U 0.0567 0.447 1 02/08/2024 20:23 WG2220590 Di-n-butyl phthalate U 0.0153 0.447 1 02/08/2024 20:23 WG2220590 Diethyl phthalate U 0.0148 0.447 1 02/08/2024 20:23 WG2220590 Dimethyl phthalate U 0.0948 0.447 1 02/08/2024 20:23 WG2220590 Di-n-octyl phthalate U 0.0302 0.447 1 02/08/2024 20:23 WG2220590 Pyrene U 0.00870 0.0447 1 02/08/2024 20:23 WG2220590 1,2,4-Trichlorobenzene U 0.0140 0.447 1 02/08/2024 20:23 WG2220590 4-Chloro-3-methylphenol U 0.0145 0.447 1 02/08/2024 20:23 WG2220590 2-Chlorophenol U 0.0148 0.447 1 02/08/2024 20:23 WG2220590 2,4-Dichlorophenol U 0.0130 0.447 1 02/08/2024 20:23 WG2220590 2,4-Dimethylphenol U 0.0117 0.447 1 02/08/2024 20:23 WG2220590 4,6-Dinitro-2-methylphenol U 0.101 0.447 1 02/08/2024 20:23 WG2220590 2,4-Dinitrophenol U 0.105 0.447 1 02/08/2024 20:23 WG2220590 2-Nitrophenol U 0.0160 0.447 1 02/08/2024 20:23 WG2220590 4-Nitrophenol U 0.0140 0.447 1 02/08/2024 20:23 WG2220590 Pentachlorophenol U 0.0120 0.447 1 02/08/2024 20:23 WG2220590 Phenol U 0.0180 0.447 1 02/08/2024 20:23 WG2220590 2,4,6-Trichlorophenol U 0.0144 0.447 1 02/08/2024 20:23 WG2220590 (S) 2-Fluorophenol 71.4 12.0-120 02/08/2024 20:23 WG2220590 (S) Phenol-d5 69.7 10.0-120 02/08/2024 20:23 WG2220590 (S) Nitrobenzene-d5 67.3 10.0-122 02/08/2024 20:23 WG2220590 (S) 2-Fluorobiphenyl 70.5 15.0-120 02/08/2024 20:23 WG2220590 (S) 2,4,6-Tribromophenol 73.2 10.0-127 02/08/2024 20:23 WG2220590 (S) p-Terphenyl-d14 77.8 10.0-120 02/08/2024 20:23 WG2220590 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/16/24 11:51 42 of 89 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/19/24 20:18 42 of 89 SAMPLE RESULTS - 13 L1701794 SB-3 0-1 Collected date/time: 01/31/24 10:55 Total Solids by Method 2540 G-2011 Result Qualifier Dilution Analysis Batch Analyte %date / time Total Solids 74.2 1 02/06/2024 15:26 WG2220127 Volatile Organic Compounds (GC/MS) by Method 8260D Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time Acetone U 0.0643 0.0880 1 02/06/2024 01:01 WG2220500 Acrylonitrile U 0.00635 0.0220 1 02/06/2024 01:01 WG2220500 Benzene U 0.000822 0.00176 1 02/06/2024 01:01 WG2220500 Bromobenzene U 0.00158 0.0220 1 02/06/2024 01:01 WG2220500 Bromodichloromethane U 0.00128 0.00440 1 02/06/2024 01:01 WG2220500 Bromoform U 0.00206 0.0440 1 02/06/2024 01:01 WG2220500 Bromomethane U 0.00347 0.0220 1 02/06/2024 01:01 WG2220500 n-Butylbenzene U 0.00924 0.0220 1 02/06/2024 01:01 WG2220500 sec-Butylbenzene U 0.00507 0.0220 1 02/06/2024 01:01 WG2220500 tert-Butylbenzene U 0.00343 0.00880 1 02/06/2024 01:01 WG2220500 Carbon tetrachloride U 0.00158 0.00880 1 02/06/2024 01:01 WG2220500 Chlorobenzene U 0.000370 0.00440 1 02/06/2024 01:01 WG2220500 Chlorodibromomethane U 0.00108 0.00440 1 02/06/2024 01:01 WG2220500 Chloroethane U 0.00299 0.00880 1 02/06/2024 01:01 WG2220500 Chloroform 0.00606 B 0.00181 0.00440 1 02/06/2024 01:01 WG2220500 Chloromethane U 0.00766 0.0220 1 02/06/2024 01:01 WG2220500 2-Chlorotoluene U 0.00152 0.00440 1 02/06/2024 01:01 WG2220500 4-Chlorotoluene U 0.000792 0.00880 1 02/06/2024 01:01 WG2220500 1,2-Dibromo-3-Chloropropane U 0.00687 0.0440 1 02/06/2024 01:01 WG2220500 1,2-Dibromoethane U 0.00114 0.00440 1 02/06/2024 01:01 WG2220500 Dibromomethane U 0.00132 0.00880 1 02/06/2024 01:01 WG2220500 1,2-Dichlorobenzene U 0.000748 0.00880 1 02/06/2024 01:01 WG2220500 1,3-Dichlorobenzene U 0.00106 0.00880 1 02/06/2024 01:01 WG2220500 1,4-Dichlorobenzene U 0.00123 0.00880 1 02/06/2024 01:01 WG2220500 Dichlorodifluoromethane U 0.00283 0.00880 1 02/06/2024 01:01 WG2220500 1,1-Dichloroethane U 0.000864 0.00440 1 02/06/2024 01:01 WG2220500 1,2-Dichloroethane U 0.00114 0.00440 1 02/06/2024 01:01 WG2220500 1,1-Dichloroethene U 0.00107 0.00440 1 02/06/2024 01:01 WG2220500 cis-1,2-Dichloroethene 0.0391 0.00129 0.00440 1 02/06/2024 01:01 WG2220500 trans-1,2-Dichloroethene U 0.00183 0.00880 1 02/06/2024 01:01 WG2220500 1,2-Dichloropropane U 0.00250 0.00880 1 02/06/2024 01:01 WG2220500 1,1-Dichloropropene U 0.00142 0.00440 1 02/06/2024 01:01 WG2220500 1,3-Dichloropropane U 0.000882 0.00880 1 02/06/2024 01:01 WG2220500 cis-1,3-Dichloropropene U 0.00133 0.00440 1 02/06/2024 01:01 WG2220500 trans-1,3-Dichloropropene U 0.00201 0.00880 1 02/06/2024 01:01 WG2220500 2,2-Dichloropropane U 0.00243 0.00440 1 02/06/2024 01:01 WG2220500 Di-isopropyl ether U 0.000722 0.00176 1 02/06/2024 01:01 WG2220500 Ethylbenzene U 0.00130 0.00440 1 02/06/2024 01:01 WG2220500 Hexachloro-1,3-butadiene U 0.0106 0.0440 1 02/06/2024 01:01 WG2220500 Isopropylbenzene U 0.000748 0.00440 1 02/06/2024 01:01 WG2220500 p-Isopropyltoluene U 0.00449 0.00880 1 02/06/2024 01:01 WG2220500 2-Butanone (MEK)U 0.112 0.176 1 02/06/2024 01:01 WG2220500 Methylene Chloride 0.0173 B J 0.0117 0.0440 1 02/06/2024 01:01 WG2220500 4-Methyl-2-pentanone (MIBK)U 0.00401 0.0440 1 02/06/2024 01:01 WG2220500 Methyl tert-butyl ether U 0.000616 0.00176 1 02/06/2024 01:01 WG2220500 Naphthalene U C3 0.00859 0.0220 1 02/06/2024 01:01 WG2220500 n-Propylbenzene U 0.00167 0.00880 1 02/06/2024 01:01 WG2220500 Styrene U 0.000403 0.0220 1 02/06/2024 01:01 WG2220500 1,1,1,2-Tetrachloroethane U 0.00167 0.00440 1 02/06/2024 01:01 WG2220500 1,1,2,2-Tetrachloroethane U 0.00122 0.00440 1 02/06/2024 01:01 WG2220500 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/16/24 11:51 43 of 89 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/19/24 20:18 43 of 89 SAMPLE RESULTS - 13 L1701794 SB-3 0-1 Collected date/time: 01/31/24 10:55 Volatile Organic Compounds (GC/MS) by Method 8260D Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time 1,1,2-Trichlorotrifluoroethane U 0.00133 0.00440 1 02/06/2024 01:01 WG2220500 Tetrachloroethene 8.66 0.0315 0.0880 20 02/13/2024 12:22 WG2224617 Toluene U 0.00229 0.00880 1 02/06/2024 01:01 WG2220500 1,2,3-Trichlorobenzene U 0.0129 0.0220 1 02/06/2024 01:01 WG2220500 1,2,4-Trichlorobenzene U 0.00775 0.0220 1 02/06/2024 01:01 WG2220500 1,1,1-Trichloroethane U 0.00162 0.00440 1 02/06/2024 01:01 WG2220500 1,1,2-Trichloroethane U 0.00105 0.00440 1 02/06/2024 01:01 WG2220500 Trichloroethene 0.127 C5 J4 0.00103 0.00176 1 02/06/2024 01:01 WG2220500 Trichlorofluoromethane U 0.00146 0.00440 1 02/06/2024 01:01 WG2220500 1,2,3-Trichloropropane U 0.00285 0.0220 1 02/06/2024 01:01 WG2220500 1,2,4-Trimethylbenzene U 0.00278 0.00880 1 02/06/2024 01:01 WG2220500 1,2,3-Trimethylbenzene U 0.00278 0.00880 1 02/06/2024 01:01 WG2220500 1,3,5-Trimethylbenzene U 0.00352 0.00880 1 02/06/2024 01:01 WG2220500 Vinyl chloride U 0.00204 0.00440 1 02/06/2024 01:01 WG2220500 Xylenes, Total U 0.00155 0.0114 1 02/06/2024 01:01 WG2220500 (S) Toluene-d8 104 75.0-131 02/06/2024 01:01 WG2220500 (S) Toluene-d8 102 75.0-131 02/13/2024 12:22 WG2224617 (S) 4-Bromofluorobenzene 96.8 67.0-138 02/06/2024 01:01 WG2220500 (S) 4-Bromofluorobenzene 97.8 67.0-138 02/13/2024 12:22 WG2224617 (S) 1,2-Dichloroethane-d4 119 70.0-130 02/06/2024 01:01 WG2220500 (S) 1,2-Dichloroethane-d4 83.5 70.0-130 02/13/2024 12:22 WG2224617 Semi Volatile Organic Compounds (GC/MS) by Method 8270E Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time Acenaphthene U 0.00726 0.0449 1 02/08/2024 21:04 WG2220590 Acenaphthylene U 0.00632 0.0449 1 02/08/2024 21:04 WG2220590 Anthracene U 0.00799 0.0449 1 02/08/2024 21:04 WG2220590 Benzidine U 0.0843 2.25 1 02/08/2024 21:04 WG2220590 Benzo(a)anthracene U 0.00791 0.0449 1 02/08/2024 21:04 WG2220590 Benzo(b)fluoranthene U 0.00836 0.0449 1 02/08/2024 21:04 WG2220590 Benzo(k)fluoranthene U 0.00797 0.0449 1 02/08/2024 21:04 WG2220590 Benzo(g,h,i)perylene U 0.00820 0.0449 1 02/08/2024 21:04 WG2220590 Benzo(a)pyrene U 0.00834 0.0449 1 02/08/2024 21:04 WG2220590 Bis(2-chlorethoxy)methane U 0.0135 0.449 1 02/08/2024 21:04 WG2220590 Bis(2-chloroethyl)ether U 0.0148 0.449 1 02/08/2024 21:04 WG2220590 2,2-Oxybis(1-Chloropropane)U 0.0194 0.449 1 02/08/2024 21:04 WG2220590 4-Bromophenyl-phenylether U 0.0158 0.449 1 02/08/2024 21:04 WG2220590 2-Chloronaphthalene U 0.00788 0.0449 1 02/08/2024 21:04 WG2220590 4-Chlorophenyl-phenylether U 0.0156 0.449 1 02/08/2024 21:04 WG2220590 Chrysene U 0.00892 0.0449 1 02/08/2024 21:04 WG2220590 Dibenz(a,h)anthracene U 0.0124 0.0449 1 02/08/2024 21:04 WG2220590 1,2-Dichlorobenzene U 0.0133 0.449 1 02/08/2024 21:04 WG2220590 1,3-Dichlorobenzene U 0.0136 0.449 1 02/08/2024 21:04 WG2220590 1,4-Dichlorobenzene U 0.0133 0.449 1 02/08/2024 21:04 WG2220590 3,3-Dichlorobenzidine U 0.0166 0.449 1 02/08/2024 21:04 WG2220590 2,4-Dinitrotoluene U 0.0129 0.449 1 02/08/2024 21:04 WG2220590 2,6-Dinitrotoluene U 0.0147 0.449 1 02/08/2024 21:04 WG2220590 Fluoranthene U 0.00810 0.0449 1 02/08/2024 21:04 WG2220590 Fluorene U 0.00730 0.0449 1 02/08/2024 21:04 WG2220590 Hexachlorobenzene U 0.0159 0.449 1 02/08/2024 21:04 WG2220590 Hexachloro-1,3-butadiene U 0.0151 0.449 1 02/08/2024 21:04 WG2220590 Hexachlorocyclopentadiene U 0.0236 0.449 1 02/08/2024 21:04 WG2220590 Hexachloroethane U 0.0176 0.449 1 02/08/2024 21:04 WG2220590 Indeno(1,2,3-cd)pyrene U 0.0127 0.0449 1 02/08/2024 21:04 WG2220590 Isophorone U 0.0137 0.449 1 02/08/2024 21:04 WG2220590 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/16/24 11:51 44 of 89 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/19/24 20:18 44 of 89 SAMPLE RESULTS - 13 L1701794 SB-3 0-1 Collected date/time: 01/31/24 10:55 Semi Volatile Organic Compounds (GC/MS) by Method 8270E Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time Naphthalene U 0.0113 0.0449 1 02/08/2024 21:04 WG2220590 Nitrobenzene U 0.0156 0.449 1 02/08/2024 21:04 WG2220590 n-Nitrosodimethylamine U 0.0665 0.449 1 02/08/2024 21:04 WG2220590 n-Nitrosodiphenylamine U 0.0339 0.449 1 02/08/2024 21:04 WG2220590 n-Nitrosodi-n-propylamine U 0.0150 0.449 1 02/08/2024 21:04 WG2220590 Phenanthrene U 0.00890 0.0449 1 02/08/2024 21:04 WG2220590 Benzylbutyl phthalate U 0.0140 0.449 1 02/08/2024 21:04 WG2220590 Bis(2-ethylhexyl)phthalate U 0.0568 0.449 1 02/08/2024 21:04 WG2220590 Di-n-butyl phthalate U 0.0154 0.449 1 02/08/2024 21:04 WG2220590 Diethyl phthalate U 0.0148 0.449 1 02/08/2024 21:04 WG2220590 Dimethyl phthalate U 0.0951 0.449 1 02/08/2024 21:04 WG2220590 Di-n-octyl phthalate U 0.0303 0.449 1 02/08/2024 21:04 WG2220590 Pyrene U 0.00873 0.0449 1 02/08/2024 21:04 WG2220590 1,2,4-Trichlorobenzene U 0.0140 0.449 1 02/08/2024 21:04 WG2220590 4-Chloro-3-methylphenol U 0.0145 0.449 1 02/08/2024 21:04 WG2220590 2-Chlorophenol U 0.0148 0.449 1 02/08/2024 21:04 WG2220590 2,4-Dichlorophenol U 0.0131 0.449 1 02/08/2024 21:04 WG2220590 2,4-Dimethylphenol U 0.0117 0.449 1 02/08/2024 21:04 WG2220590 4,6-Dinitro-2-methylphenol U 0.102 0.449 1 02/08/2024 21:04 WG2220590 2,4-Dinitrophenol U 0.105 0.449 1 02/08/2024 21:04 WG2220590 2-Nitrophenol U 0.0160 0.449 1 02/08/2024 21:04 WG2220590 4-Nitrophenol U 0.0140 0.449 1 02/08/2024 21:04 WG2220590 Pentachlorophenol U 0.0121 0.449 1 02/08/2024 21:04 WG2220590 Phenol U 0.0181 0.449 1 02/08/2024 21:04 WG2220590 2,4,6-Trichlorophenol U 0.0144 0.449 1 02/08/2024 21:04 WG2220590 (S) 2-Fluorophenol 69.7 12.0-120 02/08/2024 21:04 WG2220590 (S) Phenol-d5 70.6 10.0-120 02/08/2024 21:04 WG2220590 (S) Nitrobenzene-d5 67.8 10.0-122 02/08/2024 21:04 WG2220590 (S) 2-Fluorobiphenyl 67.8 15.0-120 02/08/2024 21:04 WG2220590 (S) 2,4,6-Tribromophenol 69.0 10.0-127 02/08/2024 21:04 WG2220590 (S) p-Terphenyl-d14 77.4 10.0-120 02/08/2024 21:04 WG2220590 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/16/24 11:51 45 of 89 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/19/24 20:18 45 of 89 SAMPLE RESULTS - 14 L1701794 SB-3 1-2 Collected date/time: 01/31/24 11:00 Total Solids by Method 2540 G-2011 Result Qualifier Dilution Analysis Batch Analyte %date / time Total Solids 77.9 1 02/06/2024 15:26 WG2220127 Volatile Organic Compounds (GC/MS) by Method 8260D Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time Acetone U 0.0582 0.0797 1 02/06/2024 01:20 WG2220500 Acrylonitrile U 0.00576 0.0199 1 02/06/2024 01:20 WG2220500 Benzene U 0.000745 0.00159 1 02/06/2024 01:20 WG2220500 Bromobenzene U 0.00143 0.0199 1 02/06/2024 01:20 WG2220500 Bromodichloromethane U 0.00116 0.00399 1 02/06/2024 01:20 WG2220500 Bromoform U 0.00187 0.0399 1 02/06/2024 01:20 WG2220500 Bromomethane U 0.00314 0.0199 1 02/06/2024 01:20 WG2220500 n-Butylbenzene U 0.00837 0.0199 1 02/06/2024 01:20 WG2220500 sec-Butylbenzene U 0.00459 0.0199 1 02/06/2024 01:20 WG2220500 tert-Butylbenzene U 0.00311 0.00797 1 02/06/2024 01:20 WG2220500 Carbon tetrachloride U 0.00143 0.00797 1 02/06/2024 01:20 WG2220500 Chlorobenzene U 0.000335 0.00399 1 02/06/2024 01:20 WG2220500 Chlorodibromomethane U 0.000976 0.00399 1 02/06/2024 01:20 WG2220500 Chloroethane U 0.00271 0.00797 1 02/06/2024 01:20 WG2220500 Chloroform 0.00327 B J 0.00164 0.00399 1 02/06/2024 01:20 WG2220500 Chloromethane U 0.00694 0.0199 1 02/06/2024 01:20 WG2220500 2-Chlorotoluene U 0.00138 0.00399 1 02/06/2024 01:20 WG2220500 4-Chlorotoluene U 0.000717 0.00797 1 02/06/2024 01:20 WG2220500 1,2-Dibromo-3-Chloropropane U 0.00622 0.0399 1 02/06/2024 01:20 WG2220500 1,2-Dibromoethane U 0.00103 0.00399 1 02/06/2024 01:20 WG2220500 Dibromomethane U 0.00120 0.00797 1 02/06/2024 01:20 WG2220500 1,2-Dichlorobenzene U 0.000678 0.00797 1 02/06/2024 01:20 WG2220500 1,3-Dichlorobenzene U 0.000957 0.00797 1 02/06/2024 01:20 WG2220500 1,4-Dichlorobenzene U 0.00112 0.00797 1 02/06/2024 01:20 WG2220500 Dichlorodifluoromethane U 0.00257 0.00797 1 02/06/2024 01:20 WG2220500 1,1-Dichloroethane U 0.000783 0.00399 1 02/06/2024 01:20 WG2220500 1,2-Dichloroethane U 0.00103 0.00399 1 02/06/2024 01:20 WG2220500 1,1-Dichloroethene U 0.000966 0.00399 1 02/06/2024 01:20 WG2220500 cis-1,2-Dichloroethene 0.00407 0.00117 0.00399 1 02/06/2024 01:20 WG2220500 trans-1,2-Dichloroethene U 0.00166 0.00797 1 02/06/2024 01:20 WG2220500 1,2-Dichloropropane U 0.00226 0.00797 1 02/06/2024 01:20 WG2220500 1,1-Dichloropropene U 0.00129 0.00399 1 02/06/2024 01:20 WG2220500 1,3-Dichloropropane U 0.000799 0.00797 1 02/06/2024 01:20 WG2220500 cis-1,3-Dichloropropene U 0.00121 0.00399 1 02/06/2024 01:20 WG2220500 trans-1,3-Dichloropropene U 0.00182 0.00797 1 02/06/2024 01:20 WG2220500 2,2-Dichloropropane U 0.00220 0.00399 1 02/06/2024 01:20 WG2220500 Di-isopropyl ether U 0.000654 0.00159 1 02/06/2024 01:20 WG2220500 Ethylbenzene U 0.00118 0.00399 1 02/06/2024 01:20 WG2220500 Hexachloro-1,3-butadiene U 0.00957 0.0399 1 02/06/2024 01:20 WG2220500 Isopropylbenzene U 0.000678 0.00399 1 02/06/2024 01:20 WG2220500 p-Isopropyltoluene U 0.00407 0.00797 1 02/06/2024 01:20 WG2220500 2-Butanone (MEK)U 0.101 0.159 1 02/06/2024 01:20 WG2220500 Methylene Chloride 0.0172 B J 0.0106 0.0399 1 02/06/2024 01:20 WG2220500 4-Methyl-2-pentanone (MIBK)U 0.00364 0.0399 1 02/06/2024 01:20 WG2220500 Methyl tert-butyl ether U 0.000558 0.00159 1 02/06/2024 01:20 WG2220500 Naphthalene U C3 0.00778 0.0199 1 02/06/2024 01:20 WG2220500 n-Propylbenzene U 0.00151 0.00797 1 02/06/2024 01:20 WG2220500 Styrene U 0.000365 0.0199 1 02/06/2024 01:20 WG2220500 1,1,1,2-Tetrachloroethane U 0.00151 0.00399 1 02/06/2024 01:20 WG2220500 1,1,2,2-Tetrachloroethane U 0.00111 0.00399 1 02/06/2024 01:20 WG2220500 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/16/24 11:51 46 of 89 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/19/24 20:18 46 of 89 SAMPLE RESULTS - 14 L1701794 SB-3 1-2 Collected date/time: 01/31/24 11:00 Volatile Organic Compounds (GC/MS) by Method 8260D Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time 1,1,2-Trichlorotrifluoroethane U 0.00120 0.00399 1 02/06/2024 01:20 WG2220500 Tetrachloroethene 0.394 0.00143 0.00399 1 02/06/2024 01:20 WG2220500 Toluene U 0.00207 0.00797 1 02/06/2024 01:20 WG2220500 1,2,3-Trichlorobenzene U 0.0117 0.0199 1 02/06/2024 01:20 WG2220500 1,2,4-Trichlorobenzene U 0.00702 0.0199 1 02/06/2024 01:20 WG2220500 1,1,1-Trichloroethane U 0.00147 0.00399 1 02/06/2024 01:20 WG2220500 1,1,2-Trichloroethane U 0.000952 0.00399 1 02/06/2024 01:20 WG2220500 Trichloroethene 0.00432 C5 J4 0.000931 0.00159 1 02/06/2024 01:20 WG2220500 Trichlorofluoromethane U 0.00132 0.00399 1 02/06/2024 01:20 WG2220500 1,2,3-Trichloropropane U 0.00258 0.0199 1 02/06/2024 01:20 WG2220500 1,2,4-Trimethylbenzene U 0.00252 0.00797 1 02/06/2024 01:20 WG2220500 1,2,3-Trimethylbenzene U 0.00252 0.00797 1 02/06/2024 01:20 WG2220500 1,3,5-Trimethylbenzene U 0.00319 0.00797 1 02/06/2024 01:20 WG2220500 Vinyl chloride U 0.00185 0.00399 1 02/06/2024 01:20 WG2220500 Xylenes, Total U 0.00140 0.0104 1 02/06/2024 01:20 WG2220500 (S) Toluene-d8 105 75.0-131 02/06/2024 01:20 WG2220500 (S) 4-Bromofluorobenzene 97.9 67.0-138 02/06/2024 01:20 WG2220500 (S) 1,2-Dichloroethane-d4 115 70.0-130 02/06/2024 01:20 WG2220500 Semi Volatile Organic Compounds (GC/MS) by Method 8270E Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time Acenaphthene U 0.00692 0.0428 1 02/08/2024 20:44 WG2220590 Acenaphthylene U 0.00602 0.0428 1 02/08/2024 20:44 WG2220590 Anthracene U 0.00761 0.0428 1 02/08/2024 20:44 WG2220590 Benzidine U 0.0804 2.14 1 02/08/2024 20:44 WG2220590 Benzo(a)anthracene U 0.00754 0.0428 1 02/08/2024 20:44 WG2220590 Benzo(b)fluoranthene U 0.00797 0.0428 1 02/08/2024 20:44 WG2220590 Benzo(k)fluoranthene U 0.00760 0.0428 1 02/08/2024 20:44 WG2220590 Benzo(g,h,i)perylene U 0.00782 0.0428 1 02/08/2024 20:44 WG2220590 Benzo(a)pyrene U 0.00795 0.0428 1 02/08/2024 20:44 WG2220590 Bis(2-chlorethoxy)methane U 0.0128 0.428 1 02/08/2024 20:44 WG2220590 Bis(2-chloroethyl)ether U 0.0141 0.428 1 02/08/2024 20:44 WG2220590 2,2-Oxybis(1-Chloropropane)U 0.0185 0.428 1 02/08/2024 20:44 WG2220590 4-Bromophenyl-phenylether U 0.0150 0.428 1 02/08/2024 20:44 WG2220590 2-Chloronaphthalene U 0.00751 0.0428 1 02/08/2024 20:44 WG2220590 4-Chlorophenyl-phenylether U 0.0149 0.428 1 02/08/2024 20:44 WG2220590 Chrysene U 0.00850 0.0428 1 02/08/2024 20:44 WG2220590 Dibenz(a,h)anthracene U 0.0118 0.0428 1 02/08/2024 20:44 WG2220590 1,2-Dichlorobenzene U 0.0127 0.428 1 02/08/2024 20:44 WG2220590 1,3-Dichlorobenzene U 0.0130 0.428 1 02/08/2024 20:44 WG2220590 1,4-Dichlorobenzene U 0.0127 0.428 1 02/08/2024 20:44 WG2220590 3,3-Dichlorobenzidine U 0.0158 0.428 1 02/08/2024 20:44 WG2220590 2,4-Dinitrotoluene U 0.0123 0.428 1 02/08/2024 20:44 WG2220590 2,6-Dinitrotoluene U 0.0140 0.428 1 02/08/2024 20:44 WG2220590 Fluoranthene U 0.00772 0.0428 1 02/08/2024 20:44 WG2220590 Fluorene U 0.00696 0.0428 1 02/08/2024 20:44 WG2220590 Hexachlorobenzene U 0.0151 0.428 1 02/08/2024 20:44 WG2220590 Hexachloro-1,3-butadiene U 0.0144 0.428 1 02/08/2024 20:44 WG2220590 Hexachlorocyclopentadiene U 0.0225 0.428 1 02/08/2024 20:44 WG2220590 Hexachloroethane U 0.0168 0.428 1 02/08/2024 20:44 WG2220590 Indeno(1,2,3-cd)pyrene U 0.0121 0.0428 1 02/08/2024 20:44 WG2220590 Isophorone U 0.0131 0.428 1 02/08/2024 20:44 WG2220590 Naphthalene U 0.0107 0.0428 1 02/08/2024 20:44 WG2220590 Nitrobenzene U 0.0149 0.428 1 02/08/2024 20:44 WG2220590 n-Nitrosodimethylamine U 0.0634 0.428 1 02/08/2024 20:44 WG2220590 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/16/24 11:51 47 of 89 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/19/24 20:18 47 of 89 SAMPLE RESULTS - 14 L1701794 SB-3 1-2 Collected date/time: 01/31/24 11:00 Semi Volatile Organic Compounds (GC/MS) by Method 8270E Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time n-Nitrosodiphenylamine U 0.0324 0.428 1 02/08/2024 20:44 WG2220590 n-Nitrosodi-n-propylamine U 0.0143 0.428 1 02/08/2024 20:44 WG2220590 Phenanthrene U 0.00849 0.0428 1 02/08/2024 20:44 WG2220590 Benzylbutyl phthalate U 0.0134 0.428 1 02/08/2024 20:44 WG2220590 Bis(2-ethylhexyl)phthalate U 0.0542 0.428 1 02/08/2024 20:44 WG2220590 Di-n-butyl phthalate U 0.0146 0.428 1 02/08/2024 20:44 WG2220590 Diethyl phthalate U 0.0141 0.428 1 02/08/2024 20:44 WG2220590 Dimethyl phthalate U 0.0906 0.428 1 02/08/2024 20:44 WG2220590 Di-n-octyl phthalate U 0.0289 0.428 1 02/08/2024 20:44 WG2220590 Pyrene U 0.00832 0.0428 1 02/08/2024 20:44 WG2220590 1,2,4-Trichlorobenzene U 0.0134 0.428 1 02/08/2024 20:44 WG2220590 4-Chloro-3-methylphenol U 0.0139 0.428 1 02/08/2024 20:44 WG2220590 2-Chlorophenol U 0.0141 0.428 1 02/08/2024 20:44 WG2220590 2,4-Dichlorophenol U 0.0125 0.428 1 02/08/2024 20:44 WG2220590 2,4-Dimethylphenol U 0.0112 0.428 1 02/08/2024 20:44 WG2220590 4,6-Dinitro-2-methylphenol U 0.0969 0.428 1 02/08/2024 20:44 WG2220590 2,4-Dinitrophenol U 0.100 0.428 1 02/08/2024 20:44 WG2220590 2-Nitrophenol U 0.0153 0.428 1 02/08/2024 20:44 WG2220590 4-Nitrophenol U 0.0134 0.428 1 02/08/2024 20:44 WG2220590 Pentachlorophenol U 0.0115 0.428 1 02/08/2024 20:44 WG2220590 Phenol U 0.0172 0.428 1 02/08/2024 20:44 WG2220590 2,4,6-Trichlorophenol U 0.0137 0.428 1 02/08/2024 20:44 WG2220590 (S) 2-Fluorophenol 74.2 12.0-120 02/08/2024 20:44 WG2220590 (S) Phenol-d5 72.9 10.0-120 02/08/2024 20:44 WG2220590 (S) Nitrobenzene-d5 67.2 10.0-122 02/08/2024 20:44 WG2220590 (S) 2-Fluorobiphenyl 69.0 15.0-120 02/08/2024 20:44 WG2220590 (S) 2,4,6-Tribromophenol 68.8 10.0-127 02/08/2024 20:44 WG2220590 (S) p-Terphenyl-d14 74.2 10.0-120 02/08/2024 20:44 WG2220590 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/16/24 11:51 48 of 89 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/19/24 20:18 48 of 89 SAMPLE RESULTS - 15 L1701794 SB-5 0-1 Collected date/time: 01/29/24 16:30 Total Solids by Method 2540 G-2011 Result Qualifier Dilution Analysis Batch Analyte %date / time Total Solids 93.0 1 02/06/2024 15:26 WG2220127 Volatile Organic Compounds (GC/MS) by Method 8260D Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time Acetone U 0.0424 0.0581 1 02/06/2024 01:39 WG2220500 Acrylonitrile U 0.00419 0.0145 1 02/06/2024 01:39 WG2220500 Benzene U 0.000542 0.00116 1 02/06/2024 01:39 WG2220500 Bromobenzene U 0.00104 0.0145 1 02/06/2024 01:39 WG2220500 Bromodichloromethane U 0.000842 0.00290 1 02/06/2024 01:39 WG2220500 Bromoform U 0.00136 0.0290 1 02/06/2024 01:39 WG2220500 Bromomethane U 0.00229 0.0145 1 02/06/2024 01:39 WG2220500 n-Butylbenzene U 0.00610 0.0145 1 02/06/2024 01:39 WG2220500 sec-Butylbenzene U 0.00334 0.0145 1 02/06/2024 01:39 WG2220500 tert-Butylbenzene U 0.00226 0.00581 1 02/06/2024 01:39 WG2220500 Carbon tetrachloride U 0.00104 0.00581 1 02/06/2024 01:39 WG2220500 Chlorobenzene U 0.000244 0.00290 1 02/06/2024 01:39 WG2220500 Chlorodibromomethane U 0.000711 0.00290 1 02/06/2024 01:39 WG2220500 Chloroethane U 0.00197 0.00581 1 02/06/2024 01:39 WG2220500 Chloroform 0.00247 B J 0.00120 0.00290 1 02/06/2024 01:39 WG2220500 Chloromethane U 0.00505 0.0145 1 02/06/2024 01:39 WG2220500 2-Chlorotoluene U 0.00100 0.00290 1 02/06/2024 01:39 WG2220500 4-Chlorotoluene U 0.000522 0.00581 1 02/06/2024 01:39 WG2220500 1,2-Dibromo-3-Chloropropane U 0.00453 0.0290 1 02/06/2024 01:39 WG2220500 1,2-Dibromoethane U 0.000752 0.00290 1 02/06/2024 01:39 WG2220500 Dibromomethane U 0.000871 0.00581 1 02/06/2024 01:39 WG2220500 1,2-Dichlorobenzene U 0.000493 0.00581 1 02/06/2024 01:39 WG2220500 1,3-Dichlorobenzene U 0.000697 0.00581 1 02/06/2024 01:39 WG2220500 1,4-Dichlorobenzene U 0.000813 0.00581 1 02/06/2024 01:39 WG2220500 Dichlorodifluoromethane U 0.00187 0.00581 1 02/06/2024 01:39 WG2220500 1,1-Dichloroethane U 0.000570 0.00290 1 02/06/2024 01:39 WG2220500 1,2-Dichloroethane U 0.000754 0.00290 1 02/06/2024 01:39 WG2220500 1,1-Dichloroethene U 0.000704 0.00290 1 02/06/2024 01:39 WG2220500 cis-1,2-Dichloroethene U 0.000852 0.00290 1 02/06/2024 01:39 WG2220500 trans-1,2-Dichloroethene U 0.00121 0.00581 1 02/06/2024 01:39 WG2220500 1,2-Dichloropropane U 0.00165 0.00581 1 02/06/2024 01:39 WG2220500 1,1-Dichloropropene U 0.000939 0.00290 1 02/06/2024 01:39 WG2220500 1,3-Dichloropropane U 0.000582 0.00581 1 02/06/2024 01:39 WG2220500 cis-1,3-Dichloropropene U 0.000879 0.00290 1 02/06/2024 01:39 WG2220500 trans-1,3-Dichloropropene U 0.00132 0.00581 1 02/06/2024 01:39 WG2220500 2,2-Dichloropropane U 0.00160 0.00290 1 02/06/2024 01:39 WG2220500 Di-isopropyl ether U 0.000476 0.00116 1 02/06/2024 01:39 WG2220500 Ethylbenzene U 0.000856 0.00290 1 02/06/2024 01:39 WG2220500 Hexachloro-1,3-butadiene U 0.00697 0.0290 1 02/06/2024 01:39 WG2220500 Isopropylbenzene U 0.000493 0.00290 1 02/06/2024 01:39 WG2220500 p-Isopropyltoluene U 0.00296 0.00581 1 02/06/2024 01:39 WG2220500 2-Butanone (MEK)U 0.0737 0.116 1 02/06/2024 01:39 WG2220500 Methylene Chloride 0.0107 B J 0.00771 0.0290 1 02/06/2024 01:39 WG2220500 4-Methyl-2-pentanone (MIBK)U 0.00265 0.0290 1 02/06/2024 01:39 WG2220500 Methyl tert-butyl ether U 0.000406 0.00116 1 02/06/2024 01:39 WG2220500 Naphthalene 0.00687 C3 J 0.00567 0.0145 1 02/06/2024 01:39 WG2220500 n-Propylbenzene U 0.00110 0.00581 1 02/06/2024 01:39 WG2220500 Styrene U 0.000266 0.0145 1 02/06/2024 01:39 WG2220500 1,1,1,2-Tetrachloroethane U 0.00110 0.00290 1 02/06/2024 01:39 WG2220500 1,1,2,2-Tetrachloroethane U 0.000807 0.00290 1 02/06/2024 01:39 WG2220500 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/16/24 11:51 49 of 89 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/19/24 20:18 49 of 89 SAMPLE RESULTS - 15 L1701794 SB-5 0-1 Collected date/time: 01/29/24 16:30 Volatile Organic Compounds (GC/MS) by Method 8260D Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time 1,1,2-Trichlorotrifluoroethane U 0.000875 0.00290 1 02/06/2024 01:39 WG2220500 Tetrachloroethene 0.380 0.00104 0.00290 1 02/06/2024 01:39 WG2220500 Toluene 0.00561 J 0.00151 0.00581 1 02/06/2024 01:39 WG2220500 1,2,3-Trichlorobenzene U 0.00851 0.0145 1 02/06/2024 01:39 WG2220500 1,2,4-Trichlorobenzene U 0.00511 0.0145 1 02/06/2024 01:39 WG2220500 1,1,1-Trichloroethane U 0.00107 0.00290 1 02/06/2024 01:39 WG2220500 1,1,2-Trichloroethane U 0.000693 0.00290 1 02/06/2024 01:39 WG2220500 Trichloroethene U J4 0.000678 0.00116 1 02/06/2024 01:39 WG2220500 Trichlorofluoromethane U 0.000960 0.00290 1 02/06/2024 01:39 WG2220500 1,2,3-Trichloropropane U 0.00188 0.0145 1 02/06/2024 01:39 WG2220500 1,2,4-Trimethylbenzene 0.00434 J 0.00183 0.00581 1 02/06/2024 01:39 WG2220500 1,2,3-Trimethylbenzene 0.00290 J 0.00183 0.00581 1 02/06/2024 01:39 WG2220500 1,3,5-Trimethylbenzene U 0.00232 0.00581 1 02/06/2024 01:39 WG2220500 Vinyl chloride U 0.00135 0.00290 1 02/06/2024 01:39 WG2220500 Xylenes, Total 0.0110 0.00102 0.00755 1 02/06/2024 01:39 WG2220500 (S) Toluene-d8 104 75.0-131 02/06/2024 01:39 WG2220500 (S) 4-Bromofluorobenzene 97.9 67.0-138 02/06/2024 01:39 WG2220500 (S) 1,2-Dichloroethane-d4 114 70.0-130 02/06/2024 01:39 WG2220500 Semi Volatile Organic Compounds (GC/MS) by Method 8270E Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time Acenaphthene U 0.00579 0.0358 1 02/09/2024 19:56 WG2220590 Acenaphthylene U 0.00504 0.0358 1 02/09/2024 19:56 WG2220590 Anthracene 0.00731 J 0.00637 0.0358 1 02/09/2024 19:56 WG2220590 Benzidine U 0.0673 1.79 1 02/09/2024 19:56 WG2220590 Benzo(a)anthracene 0.0284 J 0.00631 0.0358 1 02/09/2024 19:56 WG2220590 Benzo(b)fluoranthene 0.0358 J 0.00667 0.0358 1 02/09/2024 19:56 WG2220590 Benzo(k)fluoranthene 0.0110 J 0.00636 0.0358 1 02/09/2024 19:56 WG2220590 Benzo(g,h,i)perylene 0.0278 J 0.00655 0.0358 1 02/09/2024 19:56 WG2220590 Benzo(a)pyrene 0.0306 J 0.00665 0.0358 1 02/09/2024 19:56 WG2220590 Bis(2-chlorethoxy)methane U 0.0107 0.358 1 02/09/2024 19:56 WG2220590 Bis(2-chloroethyl)ether U 0.0118 0.358 1 02/09/2024 19:56 WG2220590 2,2-Oxybis(1-Chloropropane)U 0.0155 0.358 1 02/09/2024 19:56 WG2220590 4-Bromophenyl-phenylether U 0.0126 0.358 1 02/09/2024 19:56 WG2220590 2-Chloronaphthalene U 0.00629 0.0358 1 02/09/2024 19:56 WG2220590 4-Chlorophenyl-phenylether U 0.0125 0.358 1 02/09/2024 19:56 WG2220590 Chrysene 0.0271 J 0.00711 0.0358 1 02/09/2024 19:56 WG2220590 Dibenz(a,h)anthracene U 0.00992 0.0358 1 02/09/2024 19:56 WG2220590 1,2-Dichlorobenzene U 0.0106 0.358 1 02/09/2024 19:56 WG2220590 1,3-Dichlorobenzene U 0.0109 0.358 1 02/09/2024 19:56 WG2220590 1,4-Dichlorobenzene U 0.0107 0.358 1 02/09/2024 19:56 WG2220590 3,3-Dichlorobenzidine U 0.0132 0.358 1 02/09/2024 19:56 WG2220590 2,4-Dinitrotoluene U 0.0103 0.358 1 02/09/2024 19:56 WG2220590 2,6-Dinitrotoluene U 0.0117 0.358 1 02/09/2024 19:56 WG2220590 Fluoranthene 0.0451 0.00646 0.0358 1 02/09/2024 19:56 WG2220590 Fluorene U 0.00583 0.0358 1 02/09/2024 19:56 WG2220590 Hexachlorobenzene U 0.0127 0.358 1 02/09/2024 19:56 WG2220590 Hexachloro-1,3-butadiene U 0.0120 0.358 1 02/09/2024 19:56 WG2220590 Hexachlorocyclopentadiene U 0.0188 0.358 1 02/09/2024 19:56 WG2220590 Hexachloroethane U 0.0141 0.358 1 02/09/2024 19:56 WG2220590 Indeno(1,2,3-cd)pyrene 0.0195 J 0.0101 0.0358 1 02/09/2024 19:56 WG2220590 Isophorone U 0.0110 0.358 1 02/09/2024 19:56 WG2220590 Naphthalene 0.0139 J 0.00898 0.0358 1 02/09/2024 19:56 WG2220590 Nitrobenzene U 0.0125 0.358 1 02/09/2024 19:56 WG2220590 n-Nitrosodimethylamine U 0.0531 0.358 1 02/09/2024 19:56 WG2220590 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/16/24 11:51 50 of 89 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/19/24 20:18 50 of 89 SAMPLE RESULTS - 15 L1701794 SB-5 0-1 Collected date/time: 01/29/24 16:30 Semi Volatile Organic Compounds (GC/MS) by Method 8270E Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time n-Nitrosodiphenylamine U 0.0271 0.358 1 02/09/2024 19:56 WG2220590 n-Nitrosodi-n-propylamine U 0.0119 0.358 1 02/09/2024 19:56 WG2220590 Phenanthrene 0.0388 0.00710 0.0358 1 02/09/2024 19:56 WG2220590 Benzylbutyl phthalate 0.0442 J 0.0112 0.358 1 02/09/2024 19:56 WG2220590 Bis(2-ethylhexyl)phthalate U 0.0454 0.358 1 02/09/2024 19:56 WG2220590 Di-n-butyl phthalate 0.0150 J 0.0123 0.358 1 02/09/2024 19:56 WG2220590 Diethyl phthalate U 0.0118 0.358 1 02/09/2024 19:56 WG2220590 Dimethyl phthalate U 0.0759 0.358 1 02/09/2024 19:56 WG2220590 Di-n-octyl phthalate U 0.0242 0.358 1 02/09/2024 19:56 WG2220590 Pyrene 0.0533 0.00696 0.0358 1 02/09/2024 19:56 WG2220590 1,2,4-Trichlorobenzene U 0.0112 0.358 1 02/09/2024 19:56 WG2220590 4-Chloro-3-methylphenol U 0.0116 0.358 1 02/09/2024 19:56 WG2220590 2-Chlorophenol U 0.0118 0.358 1 02/09/2024 19:56 WG2220590 2,4-Dichlorophenol U 0.0104 0.358 1 02/09/2024 19:56 WG2220590 2,4-Dimethylphenol U 0.00935 0.358 1 02/09/2024 19:56 WG2220590 4,6-Dinitro-2-methylphenol U 0.0811 0.358 1 02/09/2024 19:56 WG2220590 2,4-Dinitrophenol U 0.0837 0.358 1 02/09/2024 19:56 WG2220590 2-Nitrophenol U 0.0128 0.358 1 02/09/2024 19:56 WG2220590 4-Nitrophenol U 0.0112 0.358 1 02/09/2024 19:56 WG2220590 Pentachlorophenol U 0.00963 0.358 1 02/09/2024 19:56 WG2220590 Phenol U 0.0144 0.358 1 02/09/2024 19:56 WG2220590 2,4,6-Trichlorophenol U 0.0115 0.358 1 02/09/2024 19:56 WG2220590 (S) 2-Fluorophenol 70.6 12.0-120 02/09/2024 19:56 WG2220590 (S) Phenol-d5 70.6 10.0-120 02/09/2024 19:56 WG2220590 (S) Nitrobenzene-d5 68.4 10.0-122 02/09/2024 19:56 WG2220590 (S) 2-Fluorobiphenyl 67.2 15.0-120 02/09/2024 19:56 WG2220590 (S) 2,4,6-Tribromophenol 66.9 10.0-127 02/09/2024 19:56 WG2220590 (S) p-Terphenyl-d14 76.4 10.0-120 02/09/2024 19:56 WG2220590 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/16/24 11:51 51 of 89 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/19/24 20:18 51 of 89 SAMPLE RESULTS - 16 L1701794 SB-5 4-5 Collected date/time: 01/29/24 16:35 Total Solids by Method 2540 G-2011 Result Qualifier Dilution Analysis Batch Analyte %date / time Total Solids 76.8 1 02/06/2024 15:26 WG2220127 Volatile Organic Compounds (GC/MS) by Method 8260D Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time Acetone U 0.0594 0.0813 1 02/06/2024 01:58 WG2220500 Acrylonitrile U 0.00587 0.0203 1 02/06/2024 01:58 WG2220500 Benzene U 0.000760 0.00163 1 02/06/2024 01:58 WG2220500 Bromobenzene U 0.00146 0.0203 1 02/06/2024 01:58 WG2220500 Bromodichloromethane U 0.00118 0.00407 1 02/06/2024 01:58 WG2220500 Bromoform U 0.00190 0.0407 1 02/06/2024 01:58 WG2220500 Bromomethane U 0.00320 0.0203 1 02/06/2024 01:58 WG2220500 n-Butylbenzene U 0.00854 0.0203 1 02/06/2024 01:58 WG2220500 sec-Butylbenzene U 0.00469 0.0203 1 02/06/2024 01:58 WG2220500 tert-Butylbenzene U 0.00317 0.00813 1 02/06/2024 01:58 WG2220500 Carbon tetrachloride U 0.00146 0.00813 1 02/06/2024 01:58 WG2220500 Chlorobenzene U 0.000342 0.00407 1 02/06/2024 01:58 WG2220500 Chlorodibromomethane U 0.000996 0.00407 1 02/06/2024 01:58 WG2220500 Chloroethane U 0.00277 0.00813 1 02/06/2024 01:58 WG2220500 Chloroform 0.00351 B J 0.00168 0.00407 1 02/06/2024 01:58 WG2220500 Chloromethane U 0.00708 0.0203 1 02/06/2024 01:58 WG2220500 2-Chlorotoluene U 0.00141 0.00407 1 02/06/2024 01:58 WG2220500 4-Chlorotoluene U 0.000732 0.00813 1 02/06/2024 01:58 WG2220500 1,2-Dibromo-3-Chloropropane U 0.00634 0.0407 1 02/06/2024 01:58 WG2220500 1,2-Dibromoethane U 0.00105 0.00407 1 02/06/2024 01:58 WG2220500 Dibromomethane U 0.00122 0.00813 1 02/06/2024 01:58 WG2220500 1,2-Dichlorobenzene U 0.000691 0.00813 1 02/06/2024 01:58 WG2220500 1,3-Dichlorobenzene U 0.000976 0.00813 1 02/06/2024 01:58 WG2220500 1,4-Dichlorobenzene U 0.00114 0.00813 1 02/06/2024 01:58 WG2220500 Dichlorodifluoromethane U 0.00262 0.00813 1 02/06/2024 01:58 WG2220500 1,1-Dichloroethane U 0.000799 0.00407 1 02/06/2024 01:58 WG2220500 1,2-Dichloroethane U 0.00106 0.00407 1 02/06/2024 01:58 WG2220500 1,1-Dichloroethene U 0.000986 0.00407 1 02/06/2024 01:58 WG2220500 cis-1,2-Dichloroethene U 0.00119 0.00407 1 02/06/2024 01:58 WG2220500 trans-1,2-Dichloroethene U 0.00169 0.00813 1 02/06/2024 01:58 WG2220500 1,2-Dichloropropane U 0.00231 0.00813 1 02/06/2024 01:58 WG2220500 1,1-Dichloropropene U 0.00132 0.00407 1 02/06/2024 01:58 WG2220500 1,3-Dichloropropane U 0.000815 0.00813 1 02/06/2024 01:58 WG2220500 cis-1,3-Dichloropropene U 0.00123 0.00407 1 02/06/2024 01:58 WG2220500 trans-1,3-Dichloropropene U 0.00185 0.00813 1 02/06/2024 01:58 WG2220500 2,2-Dichloropropane U 0.00224 0.00407 1 02/06/2024 01:58 WG2220500 Di-isopropyl ether U 0.000667 0.00163 1 02/06/2024 01:58 WG2220500 Ethylbenzene U 0.00120 0.00407 1 02/06/2024 01:58 WG2220500 Hexachloro-1,3-butadiene U 0.00976 0.0407 1 02/06/2024 01:58 WG2220500 Isopropylbenzene U 0.000691 0.00407 1 02/06/2024 01:58 WG2220500 p-Isopropyltoluene U 0.00415 0.00813 1 02/06/2024 01:58 WG2220500 2-Butanone (MEK)U 0.103 0.163 1 02/06/2024 01:58 WG2220500 Methylene Chloride 0.0185 B J 0.0108 0.0407 1 02/06/2024 01:58 WG2220500 4-Methyl-2-pentanone (MIBK)U 0.00371 0.0407 1 02/06/2024 01:58 WG2220500 Methyl tert-butyl ether U 0.000569 0.00163 1 02/06/2024 01:58 WG2220500 Naphthalene U C3 0.00794 0.0203 1 02/06/2024 01:58 WG2220500 n-Propylbenzene U 0.00155 0.00813 1 02/06/2024 01:58 WG2220500 Styrene U 0.000373 0.0203 1 02/06/2024 01:58 WG2220500 1,1,1,2-Tetrachloroethane U 0.00154 0.00407 1 02/06/2024 01:58 WG2220500 1,1,2,2-Tetrachloroethane U 0.00113 0.00407 1 02/06/2024 01:58 WG2220500 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/16/24 11:51 52 of 89 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/19/24 20:18 52 of 89 SAMPLE RESULTS - 16 L1701794 SB-5 4-5 Collected date/time: 01/29/24 16:35 Volatile Organic Compounds (GC/MS) by Method 8260D Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time 1,1,2-Trichlorotrifluoroethane U 0.00123 0.00407 1 02/06/2024 01:58 WG2220500 Tetrachloroethene 0.0207 0.00146 0.00407 1 02/06/2024 01:58 WG2220500 Tetrachloroethene 0.0141 Q 0.00146 0.00407 1 02/13/2024 12:00 WG2224617 Toluene U 0.00211 0.00813 1 02/06/2024 01:58 WG2220500 1,2,3-Trichlorobenzene U 0.0119 0.0203 1 02/06/2024 01:58 WG2220500 1,2,4-Trichlorobenzene U 0.00716 0.0203 1 02/06/2024 01:58 WG2220500 1,1,1-Trichloroethane U 0.00150 0.00407 1 02/06/2024 01:58 WG2220500 1,1,2-Trichloroethane U 0.000971 0.00407 1 02/06/2024 01:58 WG2220500 Trichloroethene U J4 0.000950 0.00163 1 02/06/2024 01:58 WG2220500 Trichlorofluoromethane U 0.00135 0.00407 1 02/06/2024 01:58 WG2220500 1,2,3-Trichloropropane U 0.00264 0.0203 1 02/06/2024 01:58 WG2220500 1,2,4-Trimethylbenzene U 0.00257 0.00813 1 02/06/2024 01:58 WG2220500 1,2,3-Trimethylbenzene U 0.00257 0.00813 1 02/06/2024 01:58 WG2220500 1,3,5-Trimethylbenzene U 0.00325 0.00813 1 02/06/2024 01:58 WG2220500 Vinyl chloride U 0.00189 0.00407 1 02/06/2024 01:58 WG2220500 Xylenes, Total U 0.00143 0.0106 1 02/06/2024 01:58 WG2220500 (S) Toluene-d8 105 75.0-131 02/06/2024 01:58 WG2220500 (S) Toluene-d8 101 75.0-131 02/13/2024 12:00 WG2224617 (S) 4-Bromofluorobenzene 97.1 67.0-138 02/06/2024 01:58 WG2220500 (S) 4-Bromofluorobenzene 91.2 67.0-138 02/13/2024 12:00 WG2224617 (S) 1,2-Dichloroethane-d4 115 70.0-130 02/06/2024 01:58 WG2220500 (S) 1,2-Dichloroethane-d4 77.6 70.0-130 02/13/2024 12:00 WG2224617 Sample Narrative: L1701794-16 WG2220500: PCE result possible biased high due to carryover from -15. Semi Volatile Organic Compounds (GC/MS) by Method 8270E Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time Acenaphthene U 0.00702 0.0434 1 02/08/2024 21:45 WG2220590 Acenaphthylene U 0.00611 0.0434 1 02/08/2024 21:45 WG2220590 Anthracene U 0.00772 0.0434 1 02/08/2024 21:45 WG2220590 Benzidine U 0.0815 2.17 1 02/08/2024 21:45 WG2220590 Benzo(a)anthracene U 0.00764 0.0434 1 02/08/2024 21:45 WG2220590 Benzo(b)fluoranthene U 0.00808 0.0434 1 02/08/2024 21:45 WG2220590 Benzo(k)fluoranthene U 0.00771 0.0434 1 02/08/2024 21:45 WG2220590 Benzo(g,h,i)perylene U 0.00793 0.0434 1 02/08/2024 21:45 WG2220590 Benzo(a)pyrene U 0.00806 0.0434 1 02/08/2024 21:45 WG2220590 Bis(2-chlorethoxy)methane U 0.0130 0.434 1 02/08/2024 21:45 WG2220590 Bis(2-chloroethyl)ether U 0.0143 0.434 1 02/08/2024 21:45 WG2220590 2,2-Oxybis(1-Chloropropane)U 0.0187 0.434 1 02/08/2024 21:45 WG2220590 4-Bromophenyl-phenylether U 0.0152 0.434 1 02/08/2024 21:45 WG2220590 2-Chloronaphthalene U 0.00762 0.0434 1 02/08/2024 21:45 WG2220590 4-Chlorophenyl-phenylether U 0.0151 0.434 1 02/08/2024 21:45 WG2220590 Chrysene U 0.00862 0.0434 1 02/08/2024 21:45 WG2220590 Dibenz(a,h)anthracene U 0.0120 0.0434 1 02/08/2024 21:45 WG2220590 1,2-Dichlorobenzene U 0.0128 0.434 1 02/08/2024 21:45 WG2220590 1,3-Dichlorobenzene U 0.0131 0.434 1 02/08/2024 21:45 WG2220590 1,4-Dichlorobenzene U 0.0129 0.434 1 02/08/2024 21:45 WG2220590 3,3-Dichlorobenzidine U 0.0160 0.434 1 02/08/2024 21:45 WG2220590 2,4-Dinitrotoluene U 0.0124 0.434 1 02/08/2024 21:45 WG2220590 2,6-Dinitrotoluene U 0.0142 0.434 1 02/08/2024 21:45 WG2220590 Fluoranthene U 0.00782 0.0434 1 02/08/2024 21:45 WG2220590 Fluorene U 0.00706 0.0434 1 02/08/2024 21:45 WG2220590 Hexachlorobenzene U 0.0154 0.434 1 02/08/2024 21:45 WG2220590 Hexachloro-1,3-butadiene U 0.0146 0.434 1 02/08/2024 21:45 WG2220590 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/16/24 11:51 53 of 89 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/19/24 20:18 53 of 89 SAMPLE RESULTS - 16 L1701794 SB-5 4-5 Collected date/time: 01/29/24 16:35 Semi Volatile Organic Compounds (GC/MS) by Method 8270E Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time Hexachlorocyclopentadiene U 0.0228 0.434 1 02/08/2024 21:45 WG2220590 Hexachloroethane U 0.0171 0.434 1 02/08/2024 21:45 WG2220590 Indeno(1,2,3-cd)pyrene U 0.0123 0.0434 1 02/08/2024 21:45 WG2220590 Isophorone U 0.0133 0.434 1 02/08/2024 21:45 WG2220590 Naphthalene U 0.0109 0.0434 1 02/08/2024 21:45 WG2220590 Nitrobenzene U 0.0151 0.434 1 02/08/2024 21:45 WG2220590 n-Nitrosodimethylamine U 0.0643 0.434 1 02/08/2024 21:45 WG2220590 n-Nitrosodiphenylamine U 0.0328 0.434 1 02/08/2024 21:45 WG2220590 n-Nitrosodi-n-propylamine U 0.0145 0.434 1 02/08/2024 21:45 WG2220590 Phenanthrene U 0.00861 0.0434 1 02/08/2024 21:45 WG2220590 Benzylbutyl phthalate U 0.0135 0.434 1 02/08/2024 21:45 WG2220590 Bis(2-ethylhexyl)phthalate U 0.0549 0.434 1 02/08/2024 21:45 WG2220590 Di-n-butyl phthalate U 0.0148 0.434 1 02/08/2024 21:45 WG2220590 Diethyl phthalate U 0.0143 0.434 1 02/08/2024 21:45 WG2220590 Dimethyl phthalate U 0.0919 0.434 1 02/08/2024 21:45 WG2220590 Di-n-octyl phthalate U 0.0293 0.434 1 02/08/2024 21:45 WG2220590 Pyrene U 0.00844 0.0434 1 02/08/2024 21:45 WG2220590 1,2,4-Trichlorobenzene U 0.0135 0.434 1 02/08/2024 21:45 WG2220590 4-Chloro-3-methylphenol U 0.0141 0.434 1 02/08/2024 21:45 WG2220590 2-Chlorophenol U 0.0143 0.434 1 02/08/2024 21:45 WG2220590 2,4-Dichlorophenol U 0.0126 0.434 1 02/08/2024 21:45 WG2220590 2,4-Dimethylphenol U 0.0113 0.434 1 02/08/2024 21:45 WG2220590 4,6-Dinitro-2-methylphenol U 0.0983 0.434 1 02/08/2024 21:45 WG2220590 2,4-Dinitrophenol U 0.101 0.434 1 02/08/2024 21:45 WG2220590 2-Nitrophenol U 0.0155 0.434 1 02/08/2024 21:45 WG2220590 4-Nitrophenol U 0.0135 0.434 1 02/08/2024 21:45 WG2220590 Pentachlorophenol U 0.0117 0.434 1 02/08/2024 21:45 WG2220590 Phenol U 0.0174 0.434 1 02/08/2024 21:45 WG2220590 2,4,6-Trichlorophenol U 0.0139 0.434 1 02/08/2024 21:45 WG2220590 (S) 2-Fluorophenol 70.5 12.0-120 02/08/2024 21:45 WG2220590 (S) Phenol-d5 70.9 10.0-120 02/08/2024 21:45 WG2220590 (S) Nitrobenzene-d5 66.1 10.0-122 02/08/2024 21:45 WG2220590 (S) 2-Fluorobiphenyl 65.7 15.0-120 02/08/2024 21:45 WG2220590 (S) 2,4,6-Tribromophenol 67.4 10.0-127 02/08/2024 21:45 WG2220590 (S) p-Terphenyl-d14 74.3 10.0-120 02/08/2024 21:45 WG2220590 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/16/24 11:51 54 of 89 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/19/24 20:18 54 of 89 SAMPLE RESULTS - 17 L1701794 SB-10 0-1 Collected date/time: 01/29/24 16:45 Total Solids by Method 2540 G-2011 Result Qualifier Dilution Analysis Batch Analyte %date / time Total Solids 84.3 1 02/06/2024 15:26 WG2220127 Volatile Organic Compounds (GC/MS) by Method 8260D Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time Acetone U 0.0508 0.0695 1 02/06/2024 02:17 WG2220500 Acrylonitrile U 0.00502 0.0174 1 02/06/2024 02:17 WG2220500 Benzene U 0.000649 0.00139 1 02/06/2024 02:17 WG2220500 Bromobenzene U 0.00125 0.0174 1 02/06/2024 02:17 WG2220500 Bromodichloromethane U 0.00101 0.00348 1 02/06/2024 02:17 WG2220500 Bromoform U 0.00163 0.0348 1 02/06/2024 02:17 WG2220500 Bromomethane U 0.00274 0.0174 1 02/06/2024 02:17 WG2220500 n-Butylbenzene U 0.00730 0.0174 1 02/06/2024 02:17 WG2220500 sec-Butylbenzene U 0.00401 0.0174 1 02/06/2024 02:17 WG2220500 tert-Butylbenzene U 0.00271 0.00695 1 02/06/2024 02:17 WG2220500 Carbon tetrachloride U 0.00125 0.00695 1 02/06/2024 02:17 WG2220500 Chlorobenzene U 0.000292 0.00348 1 02/06/2024 02:17 WG2220500 Chlorodibromomethane U 0.000851 0.00348 1 02/06/2024 02:17 WG2220500 Chloroethane U 0.00236 0.00695 1 02/06/2024 02:17 WG2220500 Chloroform 0.00317 B J 0.00143 0.00348 1 02/06/2024 02:17 WG2220500 Chloromethane U 0.00605 0.0174 1 02/06/2024 02:17 WG2220500 2-Chlorotoluene U 0.00120 0.00348 1 02/06/2024 02:17 WG2220500 4-Chlorotoluene U 0.000626 0.00695 1 02/06/2024 02:17 WG2220500 1,2-Dibromo-3-Chloropropane U 0.00542 0.0348 1 02/06/2024 02:17 WG2220500 1,2-Dibromoethane U 0.000901 0.00348 1 02/06/2024 02:17 WG2220500 Dibromomethane U 0.00104 0.00695 1 02/06/2024 02:17 WG2220500 1,2-Dichlorobenzene U 0.000591 0.00695 1 02/06/2024 02:17 WG2220500 1,3-Dichlorobenzene U 0.000834 0.00695 1 02/06/2024 02:17 WG2220500 1,4-Dichlorobenzene U 0.000974 0.00695 1 02/06/2024 02:17 WG2220500 Dichlorodifluoromethane U 0.00224 0.00695 1 02/06/2024 02:17 WG2220500 1,1-Dichloroethane U 0.000683 0.00348 1 02/06/2024 02:17 WG2220500 1,2-Dichloroethane U 0.000903 0.00348 1 02/06/2024 02:17 WG2220500 1,1-Dichloroethene U 0.000843 0.00348 1 02/06/2024 02:17 WG2220500 cis-1,2-Dichloroethene U 0.00102 0.00348 1 02/06/2024 02:17 WG2220500 trans-1,2-Dichloroethene U 0.00145 0.00695 1 02/06/2024 02:17 WG2220500 1,2-Dichloropropane U 0.00197 0.00695 1 02/06/2024 02:17 WG2220500 1,1-Dichloropropene U 0.00113 0.00348 1 02/06/2024 02:17 WG2220500 1,3-Dichloropropane U 0.000697 0.00695 1 02/06/2024 02:17 WG2220500 cis-1,3-Dichloropropene U 0.00105 0.00348 1 02/06/2024 02:17 WG2220500 trans-1,3-Dichloropropene U 0.00159 0.00695 1 02/06/2024 02:17 WG2220500 2,2-Dichloropropane U 0.00192 0.00348 1 02/06/2024 02:17 WG2220500 Di-isopropyl ether U 0.000570 0.00139 1 02/06/2024 02:17 WG2220500 Ethylbenzene U 0.00102 0.00348 1 02/06/2024 02:17 WG2220500 Hexachloro-1,3-butadiene U 0.00834 0.0348 1 02/06/2024 02:17 WG2220500 Isopropylbenzene U 0.000591 0.00348 1 02/06/2024 02:17 WG2220500 p-Isopropyltoluene U 0.00355 0.00695 1 02/06/2024 02:17 WG2220500 2-Butanone (MEK)U 0.0883 0.139 1 02/06/2024 02:17 WG2220500 Methylene Chloride 0.0163 B J 0.00923 0.0348 1 02/06/2024 02:17 WG2220500 4-Methyl-2-pentanone (MIBK)U 0.00317 0.0348 1 02/06/2024 02:17 WG2220500 Methyl tert-butyl ether U 0.000487 0.00139 1 02/06/2024 02:17 WG2220500 Naphthalene U C3 0.00679 0.0174 1 02/06/2024 02:17 WG2220500 n-Propylbenzene U 0.00132 0.00695 1 02/06/2024 02:17 WG2220500 Styrene U 0.000318 0.0174 1 02/06/2024 02:17 WG2220500 1,1,1,2-Tetrachloroethane U 0.00132 0.00348 1 02/06/2024 02:17 WG2220500 1,1,2,2-Tetrachloroethane U 0.000967 0.00348 1 02/06/2024 02:17 WG2220500 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/16/24 11:51 55 of 89 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/19/24 20:18 55 of 89 SAMPLE RESULTS - 17 L1701794 SB-10 0-1 Collected date/time: 01/29/24 16:45 Volatile Organic Compounds (GC/MS) by Method 8260D Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time 1,1,2-Trichlorotrifluoroethane U 0.00105 0.00348 1 02/06/2024 02:17 WG2220500 Tetrachloroethene 0.115 0.00125 0.00348 1 02/06/2024 02:17 WG2220500 Toluene U 0.00181 0.00695 1 02/06/2024 02:17 WG2220500 1,2,3-Trichlorobenzene U 0.0102 0.0174 1 02/06/2024 02:17 WG2220500 1,2,4-Trichlorobenzene U 0.00612 0.0174 1 02/06/2024 02:17 WG2220500 1,1,1-Trichloroethane U 0.00128 0.00348 1 02/06/2024 02:17 WG2220500 1,1,2-Trichloroethane U 0.000830 0.00348 1 02/06/2024 02:17 WG2220500 Trichloroethene U J4 0.000812 0.00139 1 02/06/2024 02:17 WG2220500 Trichlorofluoromethane U 0.00115 0.00348 1 02/06/2024 02:17 WG2220500 1,2,3-Trichloropropane U 0.00225 0.0174 1 02/06/2024 02:17 WG2220500 1,2,4-Trimethylbenzene U 0.00220 0.00695 1 02/06/2024 02:17 WG2220500 1,2,3-Trimethylbenzene U 0.00220 0.00695 1 02/06/2024 02:17 WG2220500 1,3,5-Trimethylbenzene U 0.00278 0.00695 1 02/06/2024 02:17 WG2220500 Vinyl chloride U 0.00161 0.00348 1 02/06/2024 02:17 WG2220500 Xylenes, Total U 0.00122 0.00904 1 02/06/2024 02:17 WG2220500 (S) Toluene-d8 104 75.0-131 02/06/2024 02:17 WG2220500 (S) 4-Bromofluorobenzene 94.7 67.0-138 02/06/2024 02:17 WG2220500 (S) 1,2-Dichloroethane-d4 116 70.0-130 02/06/2024 02:17 WG2220500 Semi Volatile Organic Compounds (GC/MS) by Method 8270E Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time Acenaphthene U 0.00639 0.0395 1 02/08/2024 22:06 WG2220590 Acenaphthylene U 0.00556 0.0395 1 02/08/2024 22:06 WG2220590 Anthracene U 0.00703 0.0395 1 02/08/2024 22:06 WG2220590 Benzidine U 0.0742 1.98 1 02/08/2024 22:06 WG2220590 Benzo(a)anthracene U 0.00696 0.0395 1 02/08/2024 22:06 WG2220590 Benzo(b)fluoranthene U 0.00736 0.0395 1 02/08/2024 22:06 WG2220590 Benzo(k)fluoranthene U 0.00702 0.0395 1 02/08/2024 22:06 WG2220590 Benzo(g,h,i)perylene U 0.00722 0.0395 1 02/08/2024 22:06 WG2220590 Benzo(a)pyrene U 0.00734 0.0395 1 02/08/2024 22:06 WG2220590 Bis(2-chlorethoxy)methane U 0.0119 0.395 1 02/08/2024 22:06 WG2220590 Bis(2-chloroethyl)ether U 0.0130 0.395 1 02/08/2024 22:06 WG2220590 2,2-Oxybis(1-Chloropropane)U 0.0171 0.395 1 02/08/2024 22:06 WG2220590 4-Bromophenyl-phenylether U 0.0139 0.395 1 02/08/2024 22:06 WG2220590 2-Chloronaphthalene U 0.00694 0.0395 1 02/08/2024 22:06 WG2220590 4-Chlorophenyl-phenylether U 0.0138 0.395 1 02/08/2024 22:06 WG2220590 Chrysene U 0.00785 0.0395 1 02/08/2024 22:06 WG2220590 Dibenz(a,h)anthracene U 0.0109 0.0395 1 02/08/2024 22:06 WG2220590 1,2-Dichlorobenzene U 0.0117 0.395 1 02/08/2024 22:06 WG2220590 1,3-Dichlorobenzene U 0.0120 0.395 1 02/08/2024 22:06 WG2220590 1,4-Dichlorobenzene U 0.0118 0.395 1 02/08/2024 22:06 WG2220590 3,3-Dichlorobenzidine U 0.0146 0.395 1 02/08/2024 22:06 WG2220590 2,4-Dinitrotoluene U 0.0113 0.395 1 02/08/2024 22:06 WG2220590 2,6-Dinitrotoluene U 0.0129 0.395 1 02/08/2024 22:06 WG2220590 Fluoranthene U 0.00713 0.0395 1 02/08/2024 22:06 WG2220590 Fluorene U 0.00643 0.0395 1 02/08/2024 22:06 WG2220590 Hexachlorobenzene U 0.0140 0.395 1 02/08/2024 22:06 WG2220590 Hexachloro-1,3-butadiene U 0.0133 0.395 1 02/08/2024 22:06 WG2220590 Hexachlorocyclopentadiene U 0.0208 0.395 1 02/08/2024 22:06 WG2220590 Hexachloroethane U 0.0155 0.395 1 02/08/2024 22:06 WG2220590 Indeno(1,2,3-cd)pyrene U 0.0112 0.0395 1 02/08/2024 22:06 WG2220590 Isophorone U 0.0121 0.395 1 02/08/2024 22:06 WG2220590 Naphthalene U 0.00991 0.0395 1 02/08/2024 22:06 WG2220590 Nitrobenzene U 0.0138 0.395 1 02/08/2024 22:06 WG2220590 n-Nitrosodimethylamine U 0.0586 0.395 1 02/08/2024 22:06 WG2220590 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/16/24 11:51 56 of 89 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/19/24 20:18 56 of 89 SAMPLE RESULTS - 17 L1701794 SB-10 0-1 Collected date/time: 01/29/24 16:45 Semi Volatile Organic Compounds (GC/MS) by Method 8270E Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time n-Nitrosodiphenylamine U 0.0299 0.395 1 02/08/2024 22:06 WG2220590 n-Nitrosodi-n-propylamine U 0.0132 0.395 1 02/08/2024 22:06 WG2220590 Phenanthrene U 0.00784 0.0395 1 02/08/2024 22:06 WG2220590 Benzylbutyl phthalate U 0.0123 0.395 1 02/08/2024 22:06 WG2220590 Bis(2-ethylhexyl)phthalate U 0.0500 0.395 1 02/08/2024 22:06 WG2220590 Di-n-butyl phthalate U 0.0135 0.395 1 02/08/2024 22:06 WG2220590 Diethyl phthalate U 0.0130 0.395 1 02/08/2024 22:06 WG2220590 Dimethyl phthalate U 0.0837 0.395 1 02/08/2024 22:06 WG2220590 Di-n-octyl phthalate U 0.0267 0.395 1 02/08/2024 22:06 WG2220590 Pyrene U 0.00769 0.0395 1 02/08/2024 22:06 WG2220590 1,2,4-Trichlorobenzene U 0.0123 0.395 1 02/08/2024 22:06 WG2220590 4-Chloro-3-methylphenol U 0.0128 0.395 1 02/08/2024 22:06 WG2220590 2-Chlorophenol U 0.0130 0.395 1 02/08/2024 22:06 WG2220590 2,4-Dichlorophenol U 0.0115 0.395 1 02/08/2024 22:06 WG2220590 2,4-Dimethylphenol U 0.0103 0.395 1 02/08/2024 22:06 WG2220590 4,6-Dinitro-2-methylphenol U 0.0895 0.395 1 02/08/2024 22:06 WG2220590 2,4-Dinitrophenol U 0.0924 0.395 1 02/08/2024 22:06 WG2220590 2-Nitrophenol U 0.0141 0.395 1 02/08/2024 22:06 WG2220590 4-Nitrophenol U 0.0123 0.395 1 02/08/2024 22:06 WG2220590 Pentachlorophenol U 0.0106 0.395 1 02/08/2024 22:06 WG2220590 Phenol U 0.0159 0.395 1 02/08/2024 22:06 WG2220590 2,4,6-Trichlorophenol U 0.0127 0.395 1 02/08/2024 22:06 WG2220590 (S) 2-Fluorophenol 66.9 12.0-120 02/08/2024 22:06 WG2220590 (S) Phenol-d5 68.0 10.0-120 02/08/2024 22:06 WG2220590 (S) Nitrobenzene-d5 60.8 10.0-122 02/08/2024 22:06 WG2220590 (S) 2-Fluorobiphenyl 62.7 15.0-120 02/08/2024 22:06 WG2220590 (S) 2,4,6-Tribromophenol 66.7 10.0-127 02/08/2024 22:06 WG2220590 (S) p-Terphenyl-d14 75.8 10.0-120 02/08/2024 22:06 WG2220590 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/16/24 11:51 57 of 89 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/19/24 20:18 57 of 89 SAMPLE RESULTS - 18 L1701794 SB-10 3-4 Collected date/time: 01/29/24 16:50 Total Solids by Method 2540 G-2011 Result Qualifier Dilution Analysis Batch Analyte %date / time Total Solids 79.9 1 02/06/2024 15:26 WG2220127 Volatile Organic Compounds (GC/MS) by Method 8260D Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time Acetone U 0.0559 0.0765 1 02/06/2024 02:40 WG2220500 Acrylonitrile U 0.00552 0.0191 1 02/06/2024 02:40 WG2220500 Benzene U 0.000715 0.00153 1 02/06/2024 02:40 WG2220500 Bromobenzene U 0.00138 0.0191 1 02/06/2024 02:40 WG2220500 Bromodichloromethane U 0.00111 0.00383 1 02/06/2024 02:40 WG2220500 Bromoform U 0.00179 0.0383 1 02/06/2024 02:40 WG2220500 Bromomethane U 0.00301 0.0191 1 02/06/2024 02:40 WG2220500 n-Butylbenzene U 0.00803 0.0191 1 02/06/2024 02:40 WG2220500 sec-Butylbenzene U 0.00441 0.0191 1 02/06/2024 02:40 WG2220500 tert-Butylbenzene U 0.00298 0.00765 1 02/06/2024 02:40 WG2220500 Carbon tetrachloride U 0.00137 0.00765 1 02/06/2024 02:40 WG2220500 Chlorobenzene U 0.000321 0.00383 1 02/06/2024 02:40 WG2220500 Chlorodibromomethane U 0.000937 0.00383 1 02/06/2024 02:40 WG2220500 Chloroethane U 0.00260 0.00765 1 02/06/2024 02:40 WG2220500 Chloroform 0.00320 B J 0.00158 0.00383 1 02/06/2024 02:40 WG2220500 Chloromethane U 0.00666 0.0191 1 02/06/2024 02:40 WG2220500 2-Chlorotoluene U 0.00132 0.00383 1 02/06/2024 02:40 WG2220500 4-Chlorotoluene U 0.000689 0.00765 1 02/06/2024 02:40 WG2220500 1,2-Dibromo-3-Chloropropane U 0.00597 0.0383 1 02/06/2024 02:40 WG2220500 1,2-Dibromoethane U 0.000992 0.00383 1 02/06/2024 02:40 WG2220500 Dibromomethane U 0.00115 0.00765 1 02/06/2024 02:40 WG2220500 1,2-Dichlorobenzene U 0.000650 0.00765 1 02/06/2024 02:40 WG2220500 1,3-Dichlorobenzene U 0.000918 0.00765 1 02/06/2024 02:40 WG2220500 1,4-Dichlorobenzene U 0.00107 0.00765 1 02/06/2024 02:40 WG2220500 Dichlorodifluoromethane U 0.00246 0.00765 1 02/06/2024 02:40 WG2220500 1,1-Dichloroethane U 0.000751 0.00383 1 02/06/2024 02:40 WG2220500 1,2-Dichloroethane U 0.000993 0.00383 1 02/06/2024 02:40 WG2220500 1,1-Dichloroethene U 0.000927 0.00383 1 02/06/2024 02:40 WG2220500 cis-1,2-Dichloroethene U 0.00112 0.00383 1 02/06/2024 02:40 WG2220500 trans-1,2-Dichloroethene U 0.00159 0.00765 1 02/06/2024 02:40 WG2220500 1,2-Dichloropropane U 0.00217 0.00765 1 02/06/2024 02:40 WG2220500 1,1-Dichloropropene U 0.00124 0.00383 1 02/06/2024 02:40 WG2220500 1,3-Dichloropropane U 0.000767 0.00765 1 02/06/2024 02:40 WG2220500 cis-1,3-Dichloropropene U 0.00116 0.00383 1 02/06/2024 02:40 WG2220500 trans-1,3-Dichloropropene U 0.00174 0.00765 1 02/06/2024 02:40 WG2220500 2,2-Dichloropropane U 0.00211 0.00383 1 02/06/2024 02:40 WG2220500 Di-isopropyl ether U 0.000627 0.00153 1 02/06/2024 02:40 WG2220500 Ethylbenzene U 0.00113 0.00383 1 02/06/2024 02:40 WG2220500 Hexachloro-1,3-butadiene U 0.00918 0.0383 1 02/06/2024 02:40 WG2220500 Isopropylbenzene U 0.000650 0.00383 1 02/06/2024 02:40 WG2220500 p-Isopropyltoluene U 0.00390 0.00765 1 02/06/2024 02:40 WG2220500 2-Butanone (MEK)U 0.0972 0.153 1 02/06/2024 02:40 WG2220500 Methylene Chloride 0.0152 B J 0.0102 0.0383 1 02/06/2024 02:40 WG2220500 4-Methyl-2-pentanone (MIBK)U 0.00349 0.0383 1 02/06/2024 02:40 WG2220500 Methyl tert-butyl ether U 0.000536 0.00153 1 02/06/2024 02:40 WG2220500 Naphthalene U C3 0.00747 0.0191 1 02/06/2024 02:40 WG2220500 n-Propylbenzene U 0.00145 0.00765 1 02/06/2024 02:40 WG2220500 Styrene U 0.000350 0.0191 1 02/06/2024 02:40 WG2220500 1,1,1,2-Tetrachloroethane U 0.00145 0.00383 1 02/06/2024 02:40 WG2220500 1,1,2,2-Tetrachloroethane U 0.00106 0.00383 1 02/06/2024 02:40 WG2220500 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/16/24 11:51 58 of 89 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/19/24 20:18 58 of 89 SAMPLE RESULTS - 18 L1701794 SB-10 3-4 Collected date/time: 01/29/24 16:50 Volatile Organic Compounds (GC/MS) by Method 8260D Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time 1,1,2-Trichlorotrifluoroethane U 0.00115 0.00383 1 02/06/2024 02:40 WG2220500 Tetrachloroethene U 0.00137 0.00383 1 02/06/2024 02:40 WG2220500 Toluene U 0.00199 0.00765 1 02/06/2024 02:40 WG2220500 1,2,3-Trichlorobenzene U 0.0112 0.0191 1 02/06/2024 02:40 WG2220500 1,2,4-Trichlorobenzene U 0.00673 0.0191 1 02/06/2024 02:40 WG2220500 1,1,1-Trichloroethane U 0.00141 0.00383 1 02/06/2024 02:40 WG2220500 1,1,2-Trichloroethane U 0.000914 0.00383 1 02/06/2024 02:40 WG2220500 Trichloroethene U J4 0.000894 0.00153 1 02/06/2024 02:40 WG2220500 Trichlorofluoromethane U 0.00127 0.00383 1 02/06/2024 02:40 WG2220500 1,2,3-Trichloropropane U 0.00248 0.0191 1 02/06/2024 02:40 WG2220500 1,2,4-Trimethylbenzene U 0.00242 0.00765 1 02/06/2024 02:40 WG2220500 1,2,3-Trimethylbenzene U 0.00242 0.00765 1 02/06/2024 02:40 WG2220500 1,3,5-Trimethylbenzene U 0.00306 0.00765 1 02/06/2024 02:40 WG2220500 Vinyl chloride U 0.00178 0.00383 1 02/06/2024 02:40 WG2220500 Xylenes, Total U 0.00135 0.00995 1 02/06/2024 02:40 WG2220500 (S) Toluene-d8 107 75.0-131 02/06/2024 02:40 WG2220500 (S) 4-Bromofluorobenzene 97.9 67.0-138 02/06/2024 02:40 WG2220500 (S) 1,2-Dichloroethane-d4 116 70.0-130 02/06/2024 02:40 WG2220500 Semi Volatile Organic Compounds (GC/MS) by Method 8270E Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time Acenaphthene U 0.00675 0.0417 1 02/08/2024 21:25 WG2220590 Acenaphthylene U 0.00587 0.0417 1 02/08/2024 21:25 WG2220590 Anthracene U 0.00743 0.0417 1 02/08/2024 21:25 WG2220590 Benzidine U 0.0784 2.09 1 02/08/2024 21:25 WG2220590 Benzo(a)anthracene U 0.00735 0.0417 1 02/08/2024 21:25 WG2220590 Benzo(b)fluoranthene U 0.00778 0.0417 1 02/08/2024 21:25 WG2220590 Benzo(k)fluoranthene U 0.00741 0.0417 1 02/08/2024 21:25 WG2220590 Benzo(g,h,i)perylene U 0.00763 0.0417 1 02/08/2024 21:25 WG2220590 Benzo(a)pyrene U 0.00775 0.0417 1 02/08/2024 21:25 WG2220590 Bis(2-chlorethoxy)methane U 0.0125 0.417 1 02/08/2024 21:25 WG2220590 Bis(2-chloroethyl)ether U 0.0138 0.417 1 02/08/2024 21:25 WG2220590 2,2-Oxybis(1-Chloropropane)U 0.0180 0.417 1 02/08/2024 21:25 WG2220590 4-Bromophenyl-phenylether U 0.0147 0.417 1 02/08/2024 21:25 WG2220590 2-Chloronaphthalene U 0.00733 0.0417 1 02/08/2024 21:25 WG2220590 4-Chlorophenyl-phenylether U 0.0145 0.417 1 02/08/2024 21:25 WG2220590 Chrysene U 0.00829 0.0417 1 02/08/2024 21:25 WG2220590 Dibenz(a,h)anthracene U 0.0116 0.0417 1 02/08/2024 21:25 WG2220590 1,2-Dichlorobenzene U 0.0124 0.417 1 02/08/2024 21:25 WG2220590 1,3-Dichlorobenzene U 0.0126 0.417 1 02/08/2024 21:25 WG2220590 1,4-Dichlorobenzene U 0.0124 0.417 1 02/08/2024 21:25 WG2220590 3,3-Dichlorobenzidine U 0.0154 0.417 1 02/08/2024 21:25 WG2220590 2,4-Dinitrotoluene U 0.0120 0.417 1 02/08/2024 21:25 WG2220590 2,6-Dinitrotoluene U 0.0136 0.417 1 02/08/2024 21:25 WG2220590 Fluoranthene U 0.00753 0.0417 1 02/08/2024 21:25 WG2220590 Fluorene U 0.00679 0.0417 1 02/08/2024 21:25 WG2220590 Hexachlorobenzene U 0.0148 0.417 1 02/08/2024 21:25 WG2220590 Hexachloro-1,3-butadiene U 0.0140 0.417 1 02/08/2024 21:25 WG2220590 Hexachlorocyclopentadiene U 0.0219 0.417 1 02/08/2024 21:25 WG2220590 Hexachloroethane U 0.0164 0.417 1 02/08/2024 21:25 WG2220590 Indeno(1,2,3-cd)pyrene U 0.0118 0.0417 1 02/08/2024 21:25 WG2220590 Isophorone U 0.0128 0.417 1 02/08/2024 21:25 WG2220590 Naphthalene U 0.0105 0.0417 1 02/08/2024 21:25 WG2220590 Nitrobenzene U 0.0145 0.417 1 02/08/2024 21:25 WG2220590 n-Nitrosodimethylamine U 0.0619 0.417 1 02/08/2024 21:25 WG2220590 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/16/24 11:51 59 of 89 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/19/24 20:18 59 of 89 SAMPLE RESULTS - 18 L1701794 SB-10 3-4 Collected date/time: 01/29/24 16:50 Semi Volatile Organic Compounds (GC/MS) by Method 8270E Result (dry)Qualifier MDL (dry)RDL (dry)Dilution Analysis Batch Analyte mg/kg mg/kg mg/kg date / time n-Nitrosodiphenylamine U 0.0316 0.417 1 02/08/2024 21:25 WG2220590 n-Nitrosodi-n-propylamine U 0.0139 0.417 1 02/08/2024 21:25 WG2220590 Phenanthrene U 0.00828 0.0417 1 02/08/2024 21:25 WG2220590 Benzylbutyl phthalate U 0.0130 0.417 1 02/08/2024 21:25 WG2220590 Bis(2-ethylhexyl)phthalate U 0.0528 0.417 1 02/08/2024 21:25 WG2220590 Di-n-butyl phthalate U 0.0143 0.417 1 02/08/2024 21:25 WG2220590 Diethyl phthalate U 0.0138 0.417 1 02/08/2024 21:25 WG2220590 Dimethyl phthalate U 0.0884 0.417 1 02/08/2024 21:25 WG2220590 Di-n-octyl phthalate U 0.0282 0.417 1 02/08/2024 21:25 WG2220590 Pyrene U 0.00811 0.0417 1 02/08/2024 21:25 WG2220590 1,2,4-Trichlorobenzene U 0.0130 0.417 1 02/08/2024 21:25 WG2220590 4-Chloro-3-methylphenol U 0.0135 0.417 1 02/08/2024 21:25 WG2220590 2-Chlorophenol U 0.0138 0.417 1 02/08/2024 21:25 WG2220590 2,4-Dichlorophenol U 0.0121 0.417 1 02/08/2024 21:25 WG2220590 2,4-Dimethylphenol U 0.0109 0.417 1 02/08/2024 21:25 WG2220590 4,6-Dinitro-2-methylphenol U 0.0945 0.417 1 02/08/2024 21:25 WG2220590 2,4-Dinitrophenol U 0.0975 0.417 1 02/08/2024 21:25 WG2220590 2-Nitrophenol U 0.0149 0.417 1 02/08/2024 21:25 WG2220590 4-Nitrophenol U 0.0130 0.417 1 02/08/2024 21:25 WG2220590 Pentachlorophenol U 0.0112 0.417 1 02/08/2024 21:25 WG2220590 Phenol U 0.0168 0.417 1 02/08/2024 21:25 WG2220590 2,4,6-Trichlorophenol U 0.0134 0.417 1 02/08/2024 21:25 WG2220590 (S) 2-Fluorophenol 63.4 12.0-120 02/08/2024 21:25 WG2220590 (S) Phenol-d5 63.4 10.0-120 02/08/2024 21:25 WG2220590 (S) Nitrobenzene-d5 63.7 10.0-122 02/08/2024 21:25 WG2220590 (S) 2-Fluorobiphenyl 61.2 15.0-120 02/08/2024 21:25 WG2220590 (S) 2,4,6-Tribromophenol 63.5 10.0-127 02/08/2024 21:25 WG2220590 (S) p-Terphenyl-d14 69.6 10.0-120 02/08/2024 21:25 WG2220590 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/16/24 11:51 60 of 89 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/19/24 20:18 60 of 89 QUALITY CONTROL SUMMARYWG2219975 Total Solids by Method 2540 G-2011 L1701794-01 Method Blank (MB) (MB) R4030682-1 02/06/24 15:57 MB Result MB Qualifier MB MDL MB RDL Analyte %%% Total Solids 0.000 L1701791-08 Original Sample (OS) • Duplicate (DUP) (OS) L1701791-08 02/06/24 15:57 • (DUP) R4030682-3 02/06/24 15:57 Original Result DUP Result Dilution DUP RPD DUP Qualifier DUP RPD Limits Analyte %%%% Total Solids 83.0 83.4 1 0.428 10 Laboratory Control Sample (LCS) (LCS) R4030682-2 02/06/24 15:57 Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier Analyte %%%% Total Solids 50.0 50.0 100 90.0-110 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/16/24 11:51 61 of 89 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/19/24 20:18 61 of 89 QUALITY CONTROL SUMMARYWG2219977 Total Solids by Method 2540 G-2011 L1701794-02,03,04,05,06,07,08,09,10,11 Method Blank (MB) (MB) R4030705-1 02/06/24 11:02 MB Result MB Qualifier MB MDL MB RDL Analyte %%% Total Solids 0.00200 L1701794-04 Original Sample (OS) • Duplicate (DUP) (OS) L1701794-04 02/06/24 11:02 • (DUP) R4030705-3 02/06/24 11:02 Original Result DUP Result Dilution DUP RPD DUP Qualifier DUP RPD Limits Analyte %%%% Total Solids 71.0 71.8 1 1.10 10 Laboratory Control Sample (LCS) (LCS) R4030705-2 02/06/24 11:02 Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier Analyte %%%% Total Solids 50.0 50.0 100 90.0-110 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/16/24 11:51 62 of 89 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/19/24 20:18 62 of 89 QUALITY CONTROL SUMMARYWG2220127 Total Solids by Method 2540 G-2011 L1701794-12,13,14,15,16,17,18 Method Blank (MB) (MB) R4030675-1 02/06/24 15:26 MB Result MB Qualifier MB MDL MB RDL Analyte %%% Total Solids 0.00300 L1701794-18 Original Sample (OS) • Duplicate (DUP) (OS) L1701794-18 02/06/24 15:26 • (DUP) R4030675-3 02/06/24 15:26 Original Result DUP Result Dilution DUP RPD DUP Qualifier DUP RPD Limits Analyte %%%% Total Solids 79.9 78.0 1 2.36 10 Laboratory Control Sample (LCS) (LCS) R4030675-2 02/06/24 15:26 Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier Analyte %%%% Total Solids 50.0 50.0 100 90.0-110 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/16/24 11:51 63 of 89 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/19/24 20:18 63 of 89 QUALITY CONTROL SUMMARYWG2220500 Volatile Organic Compounds (GC/MS) by Method 8260D L1701794-01,02,03,04,05,06,07,08,09,10,11,12,13,14,15,16,17,18 Method Blank (MB) (MB) R4032507-2 02/05/24 19:15 MB Result MB Qualifier MB MDL MB RDL Analyte mg/kg mg/kg mg/kg Acetone U 0.0365 0.0500 Acrylonitrile U 0.00361 0.0125 Benzene U 0.000467 0.00100 Bromobenzene U 0.000900 0.0125 Bromodichloromethane U 0.000725 0.00250 Bromoform U 0.00117 0.0250 Bromomethane U 0.00197 0.0125 n-Butylbenzene U 0.00525 0.0125 sec-Butylbenzene U 0.00288 0.0125 tert-Butylbenzene U 0.00195 0.00500 Carbon tetrachloride U 0.000898 0.00500 Chlorobenzene U 0.000210 0.00250 Chlorodibromomethane U 0.000612 0.00250 Chloroethane U 0.00170 0.00500 Chloroform 0.00115 J 0.00103 0.00250 Chloromethane U 0.00435 0.0125 2-Chlorotoluene U 0.000865 0.00250 4-Chlorotoluene U 0.000450 0.00500 1,2-Dibromo-3-Chloropropane U 0.00390 0.0250 1,2-Dibromoethane U 0.000648 0.00250 Dibromomethane U 0.000750 0.00500 1,2-Dichlorobenzene U 0.000425 0.00500 1,3-Dichlorobenzene U 0.000600 0.00500 1,4-Dichlorobenzene U 0.000700 0.00500 Dichlorodifluoromethane U 0.00161 0.00500 1,1-Dichloroethane U 0.000491 0.00250 1,2-Dichloroethane U 0.000649 0.00250 1,1-Dichloroethene U 0.000606 0.00250 cis-1,2-Dichloroethene U 0.000734 0.00250 trans-1,2-Dichloroethene U 0.00104 0.00500 1,2-Dichloropropane U 0.00142 0.00500 1,1-Dichloropropene U 0.000809 0.00250 1,3-Dichloropropane U 0.000501 0.00500 cis-1,3-Dichloropropene U 0.000757 0.00250 trans-1,3-Dichloropropene U 0.00114 0.00500 2,2-Dichloropropane U 0.00138 0.00250 Di-isopropyl ether U 0.000410 0.00100 Ethylbenzene U 0.000737 0.00250 Hexachloro-1,3-butadiene U 0.00600 0.0250 Isopropylbenzene U 0.000425 0.00250 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/16/24 11:51 64 of 89 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/19/24 20:18 64 of 89 QUALITY CONTROL SUMMARYWG2220500 Volatile Organic Compounds (GC/MS) by Method 8260D L1701794-01,02,03,04,05,06,07,08,09,10,11,12,13,14,15,16,17,18 Method Blank (MB) (MB) R4032507-2 02/05/24 19:15 MB Result MB Qualifier MB MDL MB RDL Analyte mg/kg mg/kg mg/kg p-Isopropyltoluene U 0.00255 0.00500 2-Butanone (MEK)U 0.0635 0.100 Methylene Chloride 0.0125 J 0.00664 0.0250 4-Methyl-2-pentanone (MIBK)U 0.00228 0.0250 Methyl tert-butyl ether U 0.000350 0.00100 Naphthalene U 0.00488 0.0125 n-Propylbenzene U 0.000950 0.00500 Styrene U 0.000229 0.0125 1,1,1,2-Tetrachloroethane U 0.000948 0.00250 1,1,2,2-Tetrachloroethane U 0.000695 0.00250 1,1,2-Trichlorotrifluoroethane U 0.000754 0.00250 Tetrachloroethene U 0.000896 0.00250 Toluene U 0.00130 0.00500 1,2,3-Trichlorobenzene U 0.00733 0.0125 1,2,4-Trichlorobenzene U 0.00440 0.0125 1,1,1-Trichloroethane U 0.000923 0.00250 1,1,2-Trichloroethane U 0.000597 0.00250 Trichloroethene U 0.000584 0.00100 Trichlorofluoromethane U 0.000827 0.00250 1,2,3-Trichloropropane U 0.00162 0.0125 1,2,4-Trimethylbenzene U 0.00158 0.00500 1,2,3-Trimethylbenzene U 0.00158 0.00500 1,3,5-Trimethylbenzene U 0.00200 0.00500 Vinyl chloride U 0.00116 0.00250 Xylenes, Total U 0.000880 0.00650 (S) Toluene-d8 103 75.0-131 (S) 4-Bromofluorobenzene 98.6 67.0-138 (S) 1,2-Dichloroethane-d4 116 70.0-130 Laboratory Control Sample (LCS) (LCS) R4032507-1 02/05/24 17:56 Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier Analyte mg/kg mg/kg %% Acetone 0.625 0.699 112 10.0-160 Acrylonitrile 0.625 0.607 97.1 45.0-153 Benzene 0.125 0.137 110 70.0-123 Bromobenzene 0.125 0.138 110 73.0-121 Bromodichloromethane 0.125 0.135 108 73.0-121 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/16/24 11:51 65 of 89 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/19/24 20:18 65 of 89 QUALITY CONTROL SUMMARYWG2220500 Volatile Organic Compounds (GC/MS) by Method 8260D L1701794-01,02,03,04,05,06,07,08,09,10,11,12,13,14,15,16,17,18 Laboratory Control Sample (LCS) (LCS) R4032507-1 02/05/24 17:56 Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier Analyte mg/kg mg/kg %% Bromoform 0.125 0.128 102 64.0-132 Bromomethane 0.125 0.141 113 56.0-147 n-Butylbenzene 0.125 0.112 89.6 68.0-135 sec-Butylbenzene 0.125 0.114 91.2 74.0-130 tert-Butylbenzene 0.125 0.121 96.8 75.0-127 Carbon tetrachloride 0.125 0.156 125 66.0-128 Chlorobenzene 0.125 0.137 110 76.0-128 Chlorodibromomethane 0.125 0.142 114 74.0-127 Chloroethane 0.125 0.140 112 61.0-134 Chloroform 0.125 0.138 110 72.0-123 Chloromethane 0.125 0.132 106 51.0-138 2-Chlorotoluene 0.125 0.121 96.8 75.0-124 4-Chlorotoluene 0.125 0.129 103 75.0-124 1,2-Dibromo-3-Chloropropane 0.125 0.117 93.6 59.0-130 1,2-Dibromoethane 0.125 0.140 112 74.0-128 Dibromomethane 0.125 0.143 114 75.0-122 1,2-Dichlorobenzene 0.125 0.131 105 76.0-124 1,3-Dichlorobenzene 0.125 0.130 104 76.0-125 1,4-Dichlorobenzene 0.125 0.105 84.0 77.0-121 Dichlorodifluoromethane 0.125 0.178 142 43.0-156 1,1-Dichloroethane 0.125 0.133 106 70.0-127 1,2-Dichloroethane 0.125 0.158 126 65.0-131 1,1-Dichloroethene 0.125 0.136 109 65.0-131 cis-1,2-Dichloroethene 0.125 0.136 109 73.0-125 trans-1,2-Dichloroethene 0.125 0.136 109 71.0-125 1,2-Dichloropropane 0.125 0.128 102 74.0-125 1,1-Dichloropropene 0.125 0.155 124 73.0-125 1,3-Dichloropropane 0.125 0.142 114 80.0-125 cis-1,3-Dichloropropene 0.125 0.130 104 76.0-127 trans-1,3-Dichloropropene 0.125 0.143 114 73.0-127 2,2-Dichloropropane 0.125 0.153 122 59.0-135 Di-isopropyl ether 0.125 0.113 90.4 60.0-136 Ethylbenzene 0.125 0.133 106 74.0-126 Hexachloro-1,3-butadiene 0.125 0.125 100 57.0-150 Isopropylbenzene 0.125 0.124 99.2 72.0-127 p-Isopropyltoluene 0.125 0.114 91.2 72.0-133 2-Butanone (MEK)0.625 0.702 112 30.0-160 Methylene Chloride 0.125 0.127 102 68.0-123 4-Methyl-2-pentanone (MIBK)0.625 0.665 106 56.0-143 Methyl tert-butyl ether 0.125 0.133 106 66.0-132 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/16/24 11:51 66 of 89 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/19/24 20:18 66 of 89 QUALITY CONTROL SUMMARYWG2220500 Volatile Organic Compounds (GC/MS) by Method 8260D L1701794-01,02,03,04,05,06,07,08,09,10,11,12,13,14,15,16,17,18 Laboratory Control Sample (LCS) (LCS) R4032507-1 02/05/24 17:56 Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier Analyte mg/kg mg/kg %% Naphthalene 0.125 0.0960 76.8 59.0-130 n-Propylbenzene 0.125 0.125 100 74.0-126 Styrene 0.125 0.121 96.8 72.0-127 1,1,1,2-Tetrachloroethane 0.125 0.142 114 74.0-129 1,1,2,2-Tetrachloroethane 0.125 0.110 88.0 68.0-128 1,1,2-Trichlorotrifluoroethane 0.125 0.152 122 61.0-139 Tetrachloroethene 0.125 0.145 116 70.0-136 Toluene 0.125 0.133 106 75.0-121 1,2,3-Trichlorobenzene 0.125 0.107 85.6 59.0-139 1,2,4-Trichlorobenzene 0.125 0.108 86.4 62.0-137 1,1,1-Trichloroethane 0.125 0.150 120 69.0-126 1,1,2-Trichloroethane 0.125 0.112 89.6 78.0-123 Trichloroethene 0.125 0.162 130 76.0-126 J4 Trichlorofluoromethane 0.125 0.149 119 61.0-142 1,2,3-Trichloropropane 0.125 0.145 116 67.0-129 1,2,4-Trimethylbenzene 0.125 0.109 87.2 70.0-126 1,2,3-Trimethylbenzene 0.125 0.118 94.4 74.0-124 1,3,5-Trimethylbenzene 0.125 0.115 92.0 73.0-127 Vinyl chloride 0.125 0.136 109 63.0-134 Xylenes, Total 0.375 0.389 104 72.0-127 (S) Toluene-d8 103 75.0-131 (S) 4-Bromofluorobenzene 102 67.0-138 (S) 1,2-Dichloroethane-d4 117 70.0-130 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/16/24 11:51 67 of 89 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/19/24 20:18 67 of 89 QUALITY CONTROL SUMMARYWG2224617 Volatile Organic Compounds (GC/MS) by Method 8260D L1701794-13,16 Method Blank (MB) (MB) R4033240-3 02/13/24 11:06 MB Result MB Qualifier MB MDL MB RDL Analyte mg/kg mg/kg mg/kg Tetrachloroethene U 0.000896 0.00250 (S) Toluene-d8 97.9 75.0-131 (S) 4-Bromofluorobenzene 94.0 67.0-138 (S) 1,2-Dichloroethane-d4 77.3 70.0-130 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R4033240-1 02/13/24 09:17 • (LCSD) R4033240-2 02/13/24 09:39 Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits Analyte mg/kg mg/kg mg/kg %%%%% Tetrachloroethene 0.125 0.121 0.112 96.8 89.6 70.0-136 7.73 20 (S) Toluene-d8 100 95.6 75.0-131 (S) 4-Bromofluorobenzene 96.5 97.2 67.0-138 (S) 1,2-Dichloroethane-d4 83.4 86.3 70.0-130 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/16/24 11:51 68 of 89 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/19/24 20:18 68 of 89 QUALITY CONTROL SUMMARYWG2220589 Semi Volatile Organic Compounds (GC/MS) by Method 8270E L1701794-01 Method Blank (MB) (MB) R4031345-2 02/07/24 00:50 MB Result MB Qualifier MB MDL MB RDL Analyte mg/kg mg/kg mg/kg Acenaphthene U 0.00539 0.0333 Acenaphthylene U 0.00469 0.0333 Anthracene U 0.00593 0.0333 Benzidine U 0.0626 1.67 Benzo(a)anthracene U 0.00587 0.0333 Benzo(b)fluoranthene U 0.00621 0.0333 Benzo(k)fluoranthene U 0.00592 0.0333 Benzo(g,h,i)perylene U 0.00609 0.0333 Benzo(a)pyrene U 0.00619 0.0333 Bis(2-chlorethoxy)methane U 0.0100 0.333 Bis(2-chloroethyl)ether U 0.0110 0.333 2,2-Oxybis(1-Chloropropane)U 0.0144 0.333 4-Bromophenyl-phenylether U 0.0117 0.333 2-Chloronaphthalene U 0.00585 0.0333 4-Chlorophenyl-phenylether U 0.0116 0.333 Chrysene U 0.00662 0.0333 Dibenz(a,h)anthracene U 0.00923 0.0333 1,2-Dichlorobenzene U 0.00987 0.333 1,3-Dichlorobenzene U 0.0101 0.333 1,4-Dichlorobenzene U 0.00991 0.333 3,3-Dichlorobenzidine U 0.0123 0.333 2,4-Dinitrotoluene U 0.00955 0.333 2,6-Dinitrotoluene U 0.0109 0.333 Fluoranthene U 0.00601 0.0333 Fluorene U 0.00542 0.0333 Hexachlorobenzene U 0.0118 0.333 Hexachloro-1,3-butadiene U 0.0112 0.333 Hexachlorocyclopentadiene U 0.0175 0.333 Hexachloroethane U 0.0131 0.333 Indeno(1,2,3-cd)pyrene U 0.00941 0.0333 Isophorone U 0.0102 0.333 Naphthalene U 0.00836 0.0333 Nitrobenzene U 0.0116 0.333 n-Nitrosodimethylamine U 0.0494 0.333 n-Nitrosodiphenylamine U 0.0252 0.333 n-Nitrosodi-n-propylamine U 0.0111 0.333 Phenanthrene U 0.00661 0.0333 Benzylbutyl phthalate U 0.0104 0.333 Bis(2-ethylhexyl)phthalate U 0.0422 0.333 Di-n-butyl phthalate U 0.0114 0.333 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/16/24 11:51 69 of 89 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/19/24 20:18 69 of 89 QUALITY CONTROL SUMMARYWG2220589 Semi Volatile Organic Compounds (GC/MS) by Method 8270E L1701794-01 Method Blank (MB) (MB) R4031345-2 02/07/24 00:50 MB Result MB Qualifier MB MDL MB RDL Analyte mg/kg mg/kg mg/kg Diethyl phthalate U 0.0110 0.333 Dimethyl phthalate U 0.0706 0.333 Di-n-octyl phthalate U 0.0225 0.333 Pyrene U 0.00648 0.0333 1,2,4-Trichlorobenzene U 0.0104 0.333 4-Chloro-3-methylphenol U 0.0108 0.333 2-Chlorophenol U 0.0110 0.333 2,4-Dichlorophenol U 0.00970 0.333 2,4-Dimethylphenol U 0.00870 0.333 4,6-Dinitro-2-methylphenol U 0.0755 0.333 2,4-Dinitrophenol U 0.0779 0.333 2-Nitrophenol U 0.0119 0.333 4-Nitrophenol U 0.0104 0.333 Pentachlorophenol U 0.00896 0.333 Phenol U 0.0134 0.333 2,4,6-Trichlorophenol U 0.0107 0.333 (S) 2-Fluorophenol 70.9 12.0-120 (S) Phenol-d5 64.6 10.0-120 (S) Nitrobenzene-d5 66.1 10.0-122 (S) 2-Fluorobiphenyl 63.7 15.0-120 (S) 2,4,6-Tribromophenol 64.4 10.0-127 (S) p-Terphenyl-d14 72.7 10.0-120 Laboratory Control Sample (LCS) (LCS) R4031345-1 02/07/24 00:26 Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier Analyte mg/kg mg/kg %% Acenaphthene 0.666 0.430 64.6 38.0-120 Acenaphthylene 0.666 0.478 71.8 40.0-120 Anthracene 0.666 0.461 69.2 42.0-120 Benzidine 1.33 0.677 50.9 10.0-120 Benzo(a)anthracene 0.666 0.492 73.9 44.0-120 Benzo(b)fluoranthene 0.666 0.463 69.5 43.0-120 Benzo(k)fluoranthene 0.666 0.461 69.2 44.0-120 Benzo(g,h,i)perylene 0.666 0.475 71.3 43.0-120 Benzo(a)pyrene 0.666 0.485 72.8 45.0-120 Bis(2-chlorethoxy)methane 0.666 0.341 51.2 20.0-120 Bis(2-chloroethyl)ether 0.666 0.418 62.8 16.0-120 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/16/24 11:51 70 of 89 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/19/24 20:18 70 of 89 QUALITY CONTROL SUMMARYWG2220589 Semi Volatile Organic Compounds (GC/MS) by Method 8270E L1701794-01 Laboratory Control Sample (LCS) (LCS) R4031345-1 02/07/24 00:26 Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier Analyte mg/kg mg/kg %% 2,2-Oxybis(1-Chloropropane)0.666 0.413 62.0 23.0-120 4-Bromophenyl-phenylether 0.666 0.454 68.2 40.0-120 2-Chloronaphthalene 0.666 0.427 64.1 35.0-120 4-Chlorophenyl-phenylether 0.666 0.466 70.0 40.0-120 Chrysene 0.666 0.458 68.8 43.0-120 Dibenz(a,h)anthracene 0.666 0.499 74.9 44.0-120 1,2-Dichlorobenzene 0.666 0.396 59.5 32.0-120 1,3-Dichlorobenzene 0.666 0.389 58.4 30.0-120 1,4-Dichlorobenzene 0.666 0.412 61.9 31.0-120 3,3-Dichlorobenzidine 1.33 0.938 70.5 28.0-120 2,4-Dinitrotoluene 0.666 0.482 72.4 45.0-120 2,6-Dinitrotoluene 0.666 0.483 72.5 42.0-120 Fluoranthene 0.666 0.462 69.4 44.0-120 Fluorene 0.666 0.457 68.6 41.0-120 Hexachlorobenzene 0.666 0.445 66.8 39.0-120 Hexachloro-1,3-butadiene 0.666 0.331 49.7 15.0-120 Hexachlorocyclopentadiene 0.666 0.312 46.8 15.0-120 Hexachloroethane 0.666 0.396 59.5 17.0-120 Indeno(1,2,3-cd)pyrene 0.666 0.518 77.8 45.0-120 Isophorone 0.666 0.381 57.2 23.0-120 Naphthalene 0.666 0.343 51.5 18.0-120 Nitrobenzene 0.666 0.352 52.9 17.0-120 n-Nitrosodimethylamine 0.666 0.396 59.5 10.0-125 n-Nitrosodiphenylamine 0.666 0.438 65.8 40.0-120 n-Nitrosodi-n-propylamine 0.666 0.494 74.2 26.0-120 Phenanthrene 0.666 0.435 65.3 42.0-120 Benzylbutyl phthalate 0.666 0.557 83.6 40.0-120 Bis(2-ethylhexyl)phthalate 0.666 0.535 80.3 41.0-120 Di-n-butyl phthalate 0.666 0.451 67.7 43.0-120 Diethyl phthalate 0.666 0.501 75.2 43.0-120 Dimethyl phthalate 0.666 0.501 75.2 43.0-120 Di-n-octyl phthalate 0.666 0.540 81.1 40.0-120 Pyrene 0.666 0.468 70.3 41.0-120 1,2,4-Trichlorobenzene 0.666 0.344 51.7 17.0-120 4-Chloro-3-methylphenol 0.666 0.371 55.7 28.0-120 2-Chlorophenol 0.666 0.416 62.5 28.0-120 2,4-Dichlorophenol 0.666 0.340 51.1 25.0-120 2,4-Dimethylphenol 0.666 0.327 49.1 15.0-120 4,6-Dinitro-2-methylphenol 0.666 0.419 62.9 16.0-120 2,4-Dinitrophenol 0.666 0.286 42.9 10.0-120 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/16/24 11:51 71 of 89 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/19/24 20:18 71 of 89 QUALITY CONTROL SUMMARYWG2220589 Semi Volatile Organic Compounds (GC/MS) by Method 8270E L1701794-01 Laboratory Control Sample (LCS) (LCS) R4031345-1 02/07/24 00:26 Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier Analyte mg/kg mg/kg %% 2-Nitrophenol 0.666 0.360 54.1 20.0-120 4-Nitrophenol 0.666 0.496 74.5 27.0-120 Pentachlorophenol 0.666 0.350 52.6 29.0-120 Phenol 0.666 0.416 62.5 28.0-120 2,4,6-Trichlorophenol 0.666 0.420 63.1 37.0-120 (S) 2-Fluorophenol 72.2 12.0-120 (S) Phenol-d5 66.1 10.0-120 (S) Nitrobenzene-d5 57.7 10.0-122 (S) 2-Fluorobiphenyl 67.3 15.0-120 (S) 2,4,6-Tribromophenol 74.9 10.0-127 (S) p-Terphenyl-d14 73.9 10.0-120 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/16/24 11:51 72 of 89 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/19/24 20:18 72 of 89 QUALITY CONTROL SUMMARYWG2220590 Semi Volatile Organic Compounds (GC/MS) by Method 8270E L1701794-03,04,05,06,07,08,09,10,11,12,13,14,15,16,17,18 Method Blank (MB) (MB) R4031977-2 02/08/24 14:35 MB Result MB Qualifier MB MDL MB RDL Analyte mg/kg mg/kg mg/kg Acenaphthene U 0.00539 0.0333 Acenaphthylene U 0.00469 0.0333 Anthracene U 0.00593 0.0333 Benzidine U 0.0626 1.67 Benzo(a)anthracene U 0.00587 0.0333 Benzo(b)fluoranthene U 0.00621 0.0333 Benzo(k)fluoranthene U 0.00592 0.0333 Benzo(g,h,i)perylene U 0.00609 0.0333 Benzo(a)pyrene U 0.00619 0.0333 Bis(2-chlorethoxy)methane U 0.0100 0.333 Bis(2-chloroethyl)ether U 0.0110 0.333 2,2-Oxybis(1-Chloropropane)U 0.0144 0.333 4-Bromophenyl-phenylether U 0.0117 0.333 2-Chloronaphthalene U 0.00585 0.0333 4-Chlorophenyl-phenylether U 0.0116 0.333 Chrysene U 0.00662 0.0333 Dibenz(a,h)anthracene U 0.00923 0.0333 1,2-Dichlorobenzene U 0.00987 0.333 1,3-Dichlorobenzene U 0.0101 0.333 1,4-Dichlorobenzene U 0.00991 0.333 3,3-Dichlorobenzidine U 0.0123 0.333 2,4-Dinitrotoluene U 0.00955 0.333 2,6-Dinitrotoluene U 0.0109 0.333 Fluoranthene U 0.00601 0.0333 Fluorene U 0.00542 0.0333 Hexachlorobenzene U 0.0118 0.333 Hexachloro-1,3-butadiene U 0.0112 0.333 Hexachlorocyclopentadiene U 0.0175 0.333 Hexachloroethane U 0.0131 0.333 Indeno(1,2,3-cd)pyrene U 0.00941 0.0333 Isophorone U 0.0102 0.333 Naphthalene U 0.00836 0.0333 Nitrobenzene U 0.0116 0.333 n-Nitrosodimethylamine U 0.0494 0.333 n-Nitrosodiphenylamine U 0.0252 0.333 n-Nitrosodi-n-propylamine U 0.0111 0.333 Phenanthrene U 0.00661 0.0333 Benzylbutyl phthalate U 0.0104 0.333 Bis(2-ethylhexyl)phthalate U 0.0422 0.333 Di-n-butyl phthalate U 0.0114 0.333 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/16/24 11:51 73 of 89 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/19/24 20:18 73 of 89 QUALITY CONTROL SUMMARYWG2220590 Semi Volatile Organic Compounds (GC/MS) by Method 8270E L1701794-03,04,05,06,07,08,09,10,11,12,13,14,15,16,17,18 Method Blank (MB) (MB) R4031977-2 02/08/24 14:35 MB Result MB Qualifier MB MDL MB RDL Analyte mg/kg mg/kg mg/kg Diethyl phthalate U 0.0110 0.333 Dimethyl phthalate U 0.0706 0.333 Di-n-octyl phthalate U 0.0225 0.333 Pyrene U 0.00648 0.0333 1,2,4-Trichlorobenzene U 0.0104 0.333 4-Chloro-3-methylphenol U 0.0108 0.333 2-Chlorophenol U 0.0110 0.333 2,4-Dichlorophenol U 0.00970 0.333 2,4-Dimethylphenol U 0.00870 0.333 4,6-Dinitro-2-methylphenol U 0.0755 0.333 2,4-Dinitrophenol U 0.0779 0.333 2-Nitrophenol U 0.0119 0.333 4-Nitrophenol U 0.0104 0.333 Pentachlorophenol U 0.00896 0.333 Phenol U 0.0134 0.333 2,4,6-Trichlorophenol U 0.0107 0.333 (S) 2-Fluorophenol 70.4 12.0-120 (S) Phenol-d5 66.4 10.0-120 (S) Nitrobenzene-d5 67.9 10.0-122 (S) 2-Fluorobiphenyl 67.9 15.0-120 (S) 2,4,6-Tribromophenol 64.4 10.0-127 (S) p-Terphenyl-d14 79.0 10.0-120 Laboratory Control Sample (LCS) (LCS) R4031977-1 02/08/24 14:14 Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier Analyte mg/kg mg/kg %% Acenaphthene 0.666 0.544 81.7 38.0-120 Acenaphthylene 0.666 0.551 82.7 40.0-120 Anthracene 0.666 0.548 82.3 42.0-120 Benzidine 1.33 0.796 59.8 10.0-120 Benzo(a)anthracene 0.666 0.600 90.1 44.0-120 Benzo(b)fluoranthene 0.666 0.596 89.5 43.0-120 Benzo(k)fluoranthene 0.666 0.562 84.4 44.0-120 Benzo(g,h,i)perylene 0.666 0.644 96.7 43.0-120 Benzo(a)pyrene 0.666 0.613 92.0 45.0-120 Bis(2-chlorethoxy)methane 0.666 0.454 68.2 20.0-120 Bis(2-chloroethyl)ether 0.666 0.624 93.7 16.0-120 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/16/24 11:51 74 of 89 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/19/24 20:18 74 of 89 QUALITY CONTROL SUMMARYWG2220590 Semi Volatile Organic Compounds (GC/MS) by Method 8270E L1701794-03,04,05,06,07,08,09,10,11,12,13,14,15,16,17,18 Laboratory Control Sample (LCS) (LCS) R4031977-1 02/08/24 14:14 Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier Analyte mg/kg mg/kg %% 2,2-Oxybis(1-Chloropropane)0.666 0.469 70.4 23.0-120 4-Bromophenyl-phenylether 0.666 0.512 76.9 40.0-120 2-Chloronaphthalene 0.666 0.507 76.1 35.0-120 4-Chlorophenyl-phenylether 0.666 0.636 95.5 40.0-120 Chrysene 0.666 0.566 85.0 43.0-120 Dibenz(a,h)anthracene 0.666 0.631 94.7 44.0-120 1,2-Dichlorobenzene 0.666 0.505 75.8 32.0-120 1,3-Dichlorobenzene 0.666 0.485 72.8 30.0-120 1,4-Dichlorobenzene 0.666 0.495 74.3 31.0-120 3,3-Dichlorobenzidine 1.33 1.17 88.0 28.0-120 2,4-Dinitrotoluene 0.666 0.641 96.2 45.0-120 2,6-Dinitrotoluene 0.666 0.629 94.4 42.0-120 Fluoranthene 0.666 0.567 85.1 44.0-120 Fluorene 0.666 0.548 82.3 41.0-120 Hexachlorobenzene 0.666 0.524 78.7 39.0-120 Hexachloro-1,3-butadiene 0.666 0.519 77.9 15.0-120 Hexachlorocyclopentadiene 0.666 0.276 41.4 15.0-120 Hexachloroethane 0.666 0.539 80.9 17.0-120 Indeno(1,2,3-cd)pyrene 0.666 0.637 95.6 45.0-120 Isophorone 0.666 0.437 65.6 23.0-120 Naphthalene 0.666 0.404 60.7 18.0-120 Nitrobenzene 0.666 0.442 66.4 17.0-120 n-Nitrosodimethylamine 0.666 0.558 83.8 10.0-125 n-Nitrosodiphenylamine 0.666 0.478 71.8 40.0-120 n-Nitrosodi-n-propylamine 0.666 0.514 77.2 26.0-120 Phenanthrene 0.666 0.527 79.1 42.0-120 Benzylbutyl phthalate 0.666 0.692 104 40.0-120 Bis(2-ethylhexyl)phthalate 0.666 0.671 101 41.0-120 Di-n-butyl phthalate 0.666 0.558 83.8 43.0-120 Diethyl phthalate 0.666 0.630 94.6 43.0-120 Dimethyl phthalate 0.666 0.600 90.1 43.0-120 Di-n-octyl phthalate 0.666 0.707 106 40.0-120 Pyrene 0.666 0.601 90.2 41.0-120 1,2,4-Trichlorobenzene 0.666 0.462 69.4 17.0-120 4-Chloro-3-methylphenol 0.666 0.478 71.8 28.0-120 2-Chlorophenol 0.666 0.531 79.7 28.0-120 2,4-Dichlorophenol 0.666 0.491 73.7 25.0-120 2,4-Dimethylphenol 0.666 0.628 94.3 15.0-120 4,6-Dinitro-2-methylphenol 0.666 0.512 76.9 16.0-120 2,4-Dinitrophenol 0.666 0.456 68.5 10.0-120 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/16/24 11:51 75 of 89 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/19/24 20:18 75 of 89 QUALITY CONTROL SUMMARYWG2220590 Semi Volatile Organic Compounds (GC/MS) by Method 8270E L1701794-03,04,05,06,07,08,09,10,11,12,13,14,15,16,17,18 Laboratory Control Sample (LCS) (LCS) R4031977-1 02/08/24 14:14 Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier Analyte mg/kg mg/kg %% 2-Nitrophenol 0.666 0.497 74.6 20.0-120 4-Nitrophenol 0.666 0.512 76.9 27.0-120 Pentachlorophenol 0.666 0.475 71.3 29.0-120 Phenol 0.666 0.522 78.4 28.0-120 2,4,6-Trichlorophenol 0.666 0.593 89.0 37.0-120 (S) 2-Fluorophenol 81.1 12.0-120 (S) Phenol-d5 81.1 10.0-120 (S) Nitrobenzene-d5 59.5 10.0-122 (S) 2-Fluorobiphenyl 78.1 15.0-120 (S) 2,4,6-Tribromophenol 80.3 10.0-127 (S) p-Terphenyl-d14 88.3 10.0-120 L1701809-01 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1701809-01 02/10/24 06:43 • (MS) R4032740-1 02/10/24 07:04 • (MSD) R4032740-2 02/10/24 07:24 Spike Amount (dry) Original Result (dry)MS Result (dry)MSD Result (dry)MS Rec.MSD Rec.Dilution Rec. Limits MS Qualifier MSD Qualifier RPD RPD Limits Analyte mg/kg mg/kg mg/kg mg/kg %%%%% Acenaphthene 0.782 U 0.625 0.567 79.8 72.9 2 18.0-120 9.70 32 Acenaphthylene 0.782 U 0.614 0.558 78.5 71.8 2 25.0-120 9.45 32 Anthracene 0.782 U 0.622 0.567 79.5 72.9 2 22.0-120 9.31 29 Benzidine 1.56 U 0.486 0.179 31.1 11.6 2 10.0-120 J3 92.2 40 Benzo(a)anthracene 0.782 0.0932 0.710 0.613 78.9 66.8 2 25.0-120 14.7 29 Benzo(b)fluoranthene 0.782 0.182 0.751 0.623 72.8 56.8 2 19.0-122 18.6 31 Benzo(k)fluoranthene 0.782 0.0611 0.633 0.548 73.1 62.6 2 23.0-120 14.5 30 Benzo(g,h,i)perylene 0.782 0.122 0.690 0.575 72.6 58.4 2 10.0-120 18.1 33 Benzo(a)pyrene 0.782 0.126 0.704 0.627 73.8 64.4 2 24.0-120 11.6 30 Bis(2-chlorethoxy)methane 0.782 U 0.546 0.503 69.8 64.7 2 10.0-120 8.26 34 Bis(2-chloroethyl)ether 0.782 U 0.673 0.782 86.0 101 2 10.0-120 15.1 40 2,2-Oxybis(1-Chloropropane)0.782 U 0.511 0.437 65.4 56.2 2 10.0-120 15.7 40 4-Bromophenyl-phenylether 0.782 U 0.609 0.539 77.8 69.3 2 27.0-120 12.2 30 2-Chloronaphthalene 0.782 U 0.574 0.509 73.4 65.5 2 20.0-120 12.0 32 4-Chlorophenyl-phenylether 0.782 U 0.711 0.628 90.9 80.8 2 24.0-120 12.4 29 Chrysene 0.782 0.114 0.694 0.597 74.2 62.1 2 21.0-120 15.1 29 Dibenz(a,h)anthracene 0.782 0.0277 0.657 0.572 80.5 70.0 2 10.0-120 13.9 32 1,2-Dichlorobenzene 0.782 U 0.520 0.497 66.5 63.9 2 10.0-120 4.50 38 1,3-Dichlorobenzene 0.782 U 0.507 0.472 64.8 60.7 2 10.0-120 7.13 40 1,4-Dichlorobenzene 0.782 U 0.501 0.469 64.0 60.4 2 10.0-120 6.45 39 3,3-Dichlorobenzidine 1.56 U 1.40 1.08 89.2 69.4 2 10.0-120 25.8 34 2,4-Dinitrotoluene 0.782 U 0.710 0.619 90.8 79.6 2 30.0-120 13.8 31 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/16/24 11:51 76 of 89 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/19/24 20:18 76 of 89 QUALITY CONTROL SUMMARYWG2220590 Semi Volatile Organic Compounds (GC/MS) by Method 8270E L1701794-03,04,05,06,07,08,09,10,11,12,13,14,15,16,17,18 L1701809-01 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1701809-01 02/10/24 06:43 • (MS) R4032740-1 02/10/24 07:04 • (MSD) R4032740-2 02/10/24 07:24 Spike Amount (dry) Original Result (dry)MS Result (dry)MSD Result (dry)MS Rec.MSD Rec.Dilution Rec. Limits MS Qualifier MSD Qualifier RPD RPD Limits Analyte mg/kg mg/kg mg/kg mg/kg %%%%% 2,6-Dinitrotoluene 0.782 U 0.703 0.615 89.8 79.1 2 25.0-120 13.3 31 Fluoranthene 0.782 0.267 0.764 0.627 63.5 46.3 2 18.0-126 19.7 32 Fluorene 0.782 U 0.617 0.549 78.9 70.6 2 25.0-120 11.8 30 Hexachlorobenzene 0.782 U 0.619 0.563 79.1 72.4 2 27.0-120 9.37 28 Hexachloro-1,3-butadiene 0.782 U 0.668 0.597 85.4 76.8 2 10.0-120 11.2 38 Hexachlorocyclopentadiene 0.782 U U U 0.000 0.000 2 10.0-120 J6 J6 0.000 40 Hexachloroethane 0.782 U 0.480 0.427 61.4 55.0 2 10.0-120 11.7 40 Indeno(1,2,3-cd)pyrene 0.782 0.108 0.698 0.601 75.4 63.3 2 10.0-120 15.0 32 Isophorone 0.782 U 0.510 0.498 65.2 64.1 2 13.0-120 2.39 34 Naphthalene 0.782 U 0.480 0.461 61.4 59.3 2 10.0-120 4.09 35 Nitrobenzene 0.782 U 0.538 0.513 68.8 65.9 2 10.0-120 4.81 36 n-Nitrosodimethylamine 0.782 U 0.663 0.560 84.8 72.0 2 10.0-127 16.9 40 n-Nitrosodiphenylamine 0.782 U 0.544 0.496 69.5 63.8 2 17.0-120 9.26 29 n-Nitrosodi-n-propylamine 0.782 U 0.570 0.508 72.9 65.3 2 10.0-120 11.6 37 Phenanthrene 0.782 0.114 0.641 0.572 67.4 58.8 2 17.0-120 11.5 31 Benzylbutyl phthalate 0.782 U 0.785 0.699 100 89.9 2 23.0-120 11.5 30 Bis(2-ethylhexyl)phthalate 0.782 U 0.844 0.720 108 92.6 2 17.0-126 15.9 30 Di-n-butyl phthalate 0.782 U 0.635 0.564 81.2 72.6 2 30.0-120 11.8 29 Diethyl phthalate 0.782 U 0.723 0.639 92.5 82.2 2 26.0-120 12.4 28 Dimethyl phthalate 0.782 U 0.661 0.611 84.5 78.6 2 25.0-120 7.76 29 Di-n-octyl phthalate 0.782 U 0.828 0.745 106 95.8 2 21.0-123 10.6 29 Pyrene 0.782 0.225 0.752 0.649 67.4 54.5 2 16.0-121 14.8 32 1,2,4-Trichlorobenzene 0.782 U 0.567 0.538 72.5 69.2 2 12.0-120 5.23 37 4-Chloro-3-methylphenol 0.782 U 0.602 0.579 76.9 74.5 2 15.0-120 3.87 30 2-Chlorophenol 0.782 U 0.567 0.520 72.5 66.9 2 15.0-120 8.64 37 2,4-Dichlorophenol 0.782 U 0.540 0.528 69.1 68.0 2 20.0-120 2.25 31 2,4-Dimethylphenol 0.782 U 0.781 0.717 99.8 92.3 2 10.0-120 8.51 33 4,6-Dinitro-2-methylphenol 0.782 U 0.265 0.205 33.8 26.3 2 10.0-120 25.6 39 2,4-Dinitrophenol 0.782 U 0.343 0.292 43.8 37.6 2 10.0-121 15.9 40 2-Nitrophenol 0.782 U 0.548 0.498 70.0 64.1 2 12.0-120 9.44 39 4-Nitrophenol 0.782 U 0.619 0.514 79.1 66.1 2 10.0-137 18.5 32 Pentachlorophenol 0.782 U 0.505 0.380 64.6 48.9 2 10.0-160 28.3 31 Phenol 0.782 U 0.575 0.510 73.5 65.6 2 12.0-120 12.0 38 2,4,6-Trichlorophenol 0.782 U 0.658 0.601 84.2 77.2 2 19.0-120 9.18 32 (S) 2-Fluorophenol 79.2 71.4 12.0-120 (S) Phenol-d5 76.3 71.1 10.0-120 (S) Nitrobenzene-d5 65.2 64.4 10.0-122 (S) 2-Fluorobiphenyl 76.0 69.7 15.0-120 (S) 2,4,6-Tribromophenol 83.4 77.6 10.0-127 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/16/24 11:51 77 of 89 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/19/24 20:18 77 of 89 QUALITY CONTROL SUMMARYWG2220590 Semi Volatile Organic Compounds (GC/MS) by Method 8270E L1701794-03,04,05,06,07,08,09,10,11,12,13,14,15,16,17,18 L1701809-01 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1701809-01 02/10/24 06:43 • (MS) R4032740-1 02/10/24 07:04 • (MSD) R4032740-2 02/10/24 07:24 Spike Amount (dry) Original Result (dry)MS Result (dry)MSD Result (dry)MS Rec.MSD Rec.Dilution Rec. Limits MS Qualifier MSD Qualifier RPD RPD Limits Analyte mg/kg mg/kg mg/kg mg/kg %%%%% (S) p-Terphenyl-d14 85.2 74.6 10.0-120 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/16/24 11:51 78 of 89 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/19/24 20:18 78 of 89 QUALITY CONTROL SUMMARYWG2221334 Semi Volatile Organic Compounds (GC/MS) by Method 8270E L1701794-02 Method Blank (MB) (MB) R4031845-2 02/08/24 23:22 MB Result MB Qualifier MB MDL MB RDL Analyte mg/kg mg/kg mg/kg Acenaphthene U 0.00539 0.0333 Acenaphthylene U 0.00469 0.0333 Anthracene U 0.00593 0.0333 Benzidine U 0.0626 1.67 Benzo(a)anthracene U 0.00587 0.0333 Benzo(b)fluoranthene U 0.00621 0.0333 Benzo(k)fluoranthene U 0.00592 0.0333 Benzo(g,h,i)perylene U 0.00609 0.0333 Benzo(a)pyrene U 0.00619 0.0333 Bis(2-chlorethoxy)methane U 0.0100 0.333 Bis(2-chloroethyl)ether U 0.0110 0.333 2,2-Oxybis(1-Chloropropane)U 0.0144 0.333 4-Bromophenyl-phenylether U 0.0117 0.333 2-Chloronaphthalene U 0.00585 0.0333 4-Chlorophenyl-phenylether U 0.0116 0.333 Chrysene U 0.00662 0.0333 Dibenz(a,h)anthracene U 0.00923 0.0333 1,2-Dichlorobenzene U 0.00987 0.333 1,3-Dichlorobenzene U 0.0101 0.333 1,4-Dichlorobenzene U 0.00991 0.333 3,3-Dichlorobenzidine U 0.0123 0.333 2,4-Dinitrotoluene U 0.00955 0.333 2,6-Dinitrotoluene U 0.0109 0.333 Fluoranthene U 0.00601 0.0333 Fluorene U 0.00542 0.0333 Hexachlorobenzene U 0.0118 0.333 Hexachloro-1,3-butadiene U 0.0112 0.333 Hexachlorocyclopentadiene U 0.0175 0.333 Hexachloroethane U 0.0131 0.333 Indeno(1,2,3-cd)pyrene U 0.00941 0.0333 Isophorone U 0.0102 0.333 Naphthalene U 0.00836 0.0333 Nitrobenzene U 0.0116 0.333 n-Nitrosodimethylamine U 0.0494 0.333 n-Nitrosodiphenylamine U 0.0252 0.333 n-Nitrosodi-n-propylamine U 0.0111 0.333 Phenanthrene U 0.00661 0.0333 Benzylbutyl phthalate U 0.0104 0.333 Bis(2-ethylhexyl)phthalate U 0.0422 0.333 Di-n-butyl phthalate U 0.0114 0.333 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/16/24 11:51 79 of 89 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/19/24 20:18 79 of 89 QUALITY CONTROL SUMMARYWG2221334 Semi Volatile Organic Compounds (GC/MS) by Method 8270E L1701794-02 Method Blank (MB) (MB) R4031845-2 02/08/24 23:22 MB Result MB Qualifier MB MDL MB RDL Analyte mg/kg mg/kg mg/kg Diethyl phthalate U 0.0110 0.333 Dimethyl phthalate U 0.0706 0.333 Di-n-octyl phthalate U 0.0225 0.333 Pyrene U 0.00648 0.0333 1,2,4-Trichlorobenzene U 0.0104 0.333 4-Chloro-3-methylphenol U 0.0108 0.333 2-Chlorophenol U 0.0110 0.333 2,4-Dichlorophenol U 0.00970 0.333 2,4-Dimethylphenol U 0.00870 0.333 4,6-Dinitro-2-methylphenol U 0.0755 0.333 2,4-Dinitrophenol U 0.0779 0.333 2-Nitrophenol U 0.0119 0.333 4-Nitrophenol U 0.0104 0.333 Pentachlorophenol U 0.00896 0.333 Phenol U 0.0134 0.333 2,4,6-Trichlorophenol U 0.0107 0.333 (S) 2-Fluorophenol 70.0 12.0-120 (S) Phenol-d5 64.6 10.0-120 (S) Nitrobenzene-d5 69.7 10.0-122 (S) 2-Fluorobiphenyl 67.3 15.0-120 (S) 2,4,6-Tribromophenol 66.1 10.0-127 (S) p-Terphenyl-d14 80.2 10.0-120 Laboratory Control Sample (LCS) (LCS) R4031845-1 02/08/24 22:57 Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier Analyte mg/kg mg/kg %% Acenaphthene 0.666 0.426 64.0 38.0-120 Acenaphthylene 0.666 0.473 71.0 40.0-120 Anthracene 0.666 0.457 68.6 42.0-120 Benzidine 1.33 0.725 54.5 10.0-120 Benzo(a)anthracene 0.666 0.502 75.4 44.0-120 Benzo(b)fluoranthene 0.666 0.479 71.9 43.0-120 Benzo(k)fluoranthene 0.666 0.469 70.4 44.0-120 Benzo(g,h,i)perylene 0.666 0.492 73.9 43.0-120 Benzo(a)pyrene 0.666 0.497 74.6 45.0-120 Bis(2-chlorethoxy)methane 0.666 0.351 52.7 20.0-120 Bis(2-chloroethyl)ether 0.666 0.391 58.7 16.0-120 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/16/24 11:51 80 of 89 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/19/24 20:18 80 of 89 QUALITY CONTROL SUMMARYWG2221334 Semi Volatile Organic Compounds (GC/MS) by Method 8270E L1701794-02 Laboratory Control Sample (LCS) (LCS) R4031845-1 02/08/24 22:57 Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier Analyte mg/kg mg/kg %% 2,2-Oxybis(1-Chloropropane)0.666 0.420 63.1 23.0-120 4-Bromophenyl-phenylether 0.666 0.474 71.2 40.0-120 2-Chloronaphthalene 0.666 0.417 62.6 35.0-120 4-Chlorophenyl-phenylether 0.666 0.484 72.7 40.0-120 Chrysene 0.666 0.459 68.9 43.0-120 Dibenz(a,h)anthracene 0.666 0.513 77.0 44.0-120 1,2-Dichlorobenzene 0.666 0.393 59.0 32.0-120 1,3-Dichlorobenzene 0.666 0.384 57.7 30.0-120 1,4-Dichlorobenzene 0.666 0.403 60.5 31.0-120 3,3-Dichlorobenzidine 1.33 1.01 75.9 28.0-120 2,4-Dinitrotoluene 0.666 0.516 77.5 45.0-120 2,6-Dinitrotoluene 0.666 0.503 75.5 42.0-120 Fluoranthene 0.666 0.482 72.4 44.0-120 Fluorene 0.666 0.455 68.3 41.0-120 Hexachlorobenzene 0.666 0.481 72.2 39.0-120 Hexachloro-1,3-butadiene 0.666 0.338 50.8 15.0-120 Hexachlorocyclopentadiene 0.666 0.165 24.8 15.0-120 Hexachloroethane 0.666 0.382 57.4 17.0-120 Indeno(1,2,3-cd)pyrene 0.666 0.540 81.1 45.0-120 Isophorone 0.666 0.390 58.6 23.0-120 Naphthalene 0.666 0.344 51.7 18.0-120 Nitrobenzene 0.666 0.357 53.6 17.0-120 n-Nitrosodimethylamine 0.666 0.363 54.5 10.0-125 n-Nitrosodiphenylamine 0.666 0.449 67.4 40.0-120 n-Nitrosodi-n-propylamine 0.666 0.511 76.7 26.0-120 Phenanthrene 0.666 0.440 66.1 42.0-120 Benzylbutyl phthalate 0.666 0.558 83.8 40.0-120 Bis(2-ethylhexyl)phthalate 0.666 0.540 81.1 41.0-120 Di-n-butyl phthalate 0.666 0.463 69.5 43.0-120 Diethyl phthalate 0.666 0.505 75.8 43.0-120 Dimethyl phthalate 0.666 0.506 76.0 43.0-120 Di-n-octyl phthalate 0.666 0.558 83.8 40.0-120 Pyrene 0.666 0.464 69.7 41.0-120 1,2,4-Trichlorobenzene 0.666 0.338 50.8 17.0-120 4-Chloro-3-methylphenol 0.666 0.383 57.5 28.0-120 2-Chlorophenol 0.666 0.427 64.1 28.0-120 2,4-Dichlorophenol 0.666 0.318 47.7 25.0-120 2,4-Dimethylphenol 0.666 0.309 46.4 15.0-120 4,6-Dinitro-2-methylphenol 0.666 0.446 67.0 16.0-120 2,4-Dinitrophenol 0.666 0.312 46.8 10.0-120 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/16/24 11:51 81 of 89 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/19/24 20:18 81 of 89 QUALITY CONTROL SUMMARYWG2221334 Semi Volatile Organic Compounds (GC/MS) by Method 8270E L1701794-02 Laboratory Control Sample (LCS) (LCS) R4031845-1 02/08/24 22:57 Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier Analyte mg/kg mg/kg %% 2-Nitrophenol 0.666 0.370 55.6 20.0-120 4-Nitrophenol 0.666 0.491 73.7 27.0-120 Pentachlorophenol 0.666 0.372 55.9 29.0-120 Phenol 0.666 0.417 62.6 28.0-120 2,4,6-Trichlorophenol 0.666 0.401 60.2 37.0-120 (S) 2-Fluorophenol 73.0 12.0-120 (S) Phenol-d5 65.8 10.0-120 (S) Nitrobenzene-d5 58.3 10.0-122 (S) 2-Fluorobiphenyl 65.2 15.0-120 (S) 2,4,6-Tribromophenol 81.4 10.0-127 (S) p-Terphenyl-d14 74.8 10.0-120 L1701865-06 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1701865-06 02/09/24 04:52 • (MS) R4031845-3 02/09/24 05:17 • (MSD) R4031845-4 02/09/24 05:42 Spike Amount (dry) Original Result (dry)MS Result (dry)MSD Result (dry)MS Rec.MSD Rec.Dilution Rec. Limits MS Qualifier MSD Qualifier RPD RPD Limits Analyte mg/kg %%%%% Acenaphthene 0.798 U 0.343 0.445 42.9 55.8 1 18.0-120 26.1 32 Acenaphthylene 0.798 U 0.382 0.497 47.9 62.3 1 25.0-120 26.2 32 Anthracene 0.798 U 0.373 0.488 46.8 61.2 1 22.0-120 26.7 29 Benzidine 1.59 U 0.654 0.885 41.1 55.6 1 10.0-120 30.1 40 Benzo(a)anthracene 0.798 U 0.401 0.531 50.3 66.6 1 25.0-120 27.8 29 Benzo(b)fluoranthene 0.798 U 0.381 0.499 47.7 62.6 1 19.0-122 27.0 31 Benzo(k)fluoranthene 0.798 U 0.373 0.476 46.8 59.7 1 23.0-120 24.2 30 Benzo(g,h,i)perylene 0.798 U 0.400 0.515 50.2 64.6 1 10.0-120 25.1 33 Benzo(a)pyrene 0.798 U 0.398 0.515 49.8 64.6 1 24.0-120 25.7 30 Bis(2-chlorethoxy)methane 0.798 U 0.301 0.378 37.7 47.4 1 10.0-120 22.7 34 Bis(2-chloroethyl)ether 0.798 U 0.327 0.420 41.0 52.6 1 10.0-120 24.9 40 2,2-Oxybis(1-Chloropropane)0.798 U 0.332 0.421 41.6 52.8 1 10.0-120 23.7 40 4-Bromophenyl-phenylether 0.798 U 0.379 0.508 47.5 63.7 1 27.0-120 29.0 30 2-Chloronaphthalene 0.798 U 0.337 0.444 42.2 55.7 1 20.0-120 27.6 32 4-Chlorophenyl-phenylether 0.798 U 0.395 0.499 49.5 62.6 1 24.0-120 23.3 29 Chrysene 0.798 U 0.377 0.487 47.2 61.0 1 21.0-120 25.5 29 Dibenz(a,h)anthracene 0.798 U 0.421 0.535 52.8 67.0 1 10.0-120 23.8 32 1,2-Dichlorobenzene 0.798 U 0.317 0.401 39.7 50.3 1 10.0-120 23.5 38 1,3-Dichlorobenzene 0.798 U 0.301 0.389 37.7 48.8 1 10.0-120 25.5 40 1,4-Dichlorobenzene 0.798 U 0.322 0.410 40.3 51.4 1 10.0-120 24.1 39 3,3-Dichlorobenzidine 1.59 U 0.871 1.12 54.8 70.2 1 10.0-120 24.6 34 2,4-Dinitrotoluene 0.798 U 0.417 0.545 52.3 68.3 1 30.0-120 26.5 31 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/16/24 11:51 82 of 89 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/19/24 20:18 82 of 89 QUALITY CONTROL SUMMARYWG2221334 Semi Volatile Organic Compounds (GC/MS) by Method 8270E L1701794-02 L1701865-06 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1701865-06 02/09/24 04:52 • (MS) R4031845-3 02/09/24 05:17 • (MSD) R4031845-4 02/09/24 05:42 Spike Amount (dry) Original Result (dry)MS Result (dry)MSD Result (dry)MS Rec.MSD Rec.Dilution Rec. Limits MS Qualifier MSD Qualifier RPD RPD Limits Analyte mg/kg %%%%% 2,6-Dinitrotoluene 0.798 U 0.408 0.535 51.1 67.0 1 25.0-120 27.0 31 Fluoranthene 0.798 U 0.388 0.504 48.6 63.2 1 18.0-126 26.1 32 Fluorene 0.798 U 0.366 0.479 45.9 60.0 1 25.0-120 26.7 30 Hexachlorobenzene 0.798 U 0.368 0.496 46.2 62.1 1 27.0-120 J3 29.5 28 Hexachloro-1,3-butadiene 0.798 U 0.277 0.343 34.7 42.9 1 10.0-120 21.3 38 Hexachlorocyclopentadiene 0.798 U U U 0.000 0.000 1 10.0-120 J6 J6 0.000 40 Hexachloroethane 0.798 U 0.304 0.392 38.0 49.1 1 10.0-120 25.4 40 Indeno(1,2,3-cd)pyrene 0.798 U 0.439 0.568 55.1 71.2 1 10.0-120 25.5 32 Isophorone 0.798 U 0.340 0.415 42.6 52.0 1 13.0-120 19.8 34 Naphthalene 0.798 U 0.291 0.360 36.5 45.1 1 10.0-120 21.1 35 Nitrobenzene 0.798 U 0.304 0.371 38.0 46.5 1 10.0-120 20.0 36 n-Nitrosodimethylamine 0.798 U 0.306 0.375 38.3 46.9 1 10.0-127 20.1 40 n-Nitrosodiphenylamine 0.798 U 0.370 0.480 46.3 60.1 1 17.0-120 25.9 29 n-Nitrosodi-n-propylamine 0.798 U 0.426 0.536 53.4 67.2 1 10.0-120 22.9 37 Phenanthrene 0.798 U 0.359 0.461 44.9 57.8 1 17.0-120 25.1 31 Benzylbutyl phthalate 0.798 U 0.450 0.583 56.4 73.0 1 23.0-120 25.6 30 Bis(2-ethylhexyl)phthalate 0.798 U 0.432 0.562 54.1 70.4 1 17.0-126 26.1 30 Di-n-butyl phthalate 0.798 U 0.368 0.479 46.2 60.0 1 30.0-120 26.0 29 Diethyl phthalate 0.798 U 0.419 0.535 52.5 67.0 1 26.0-120 24.4 28 Dimethyl phthalate 0.798 U 0.416 0.541 52.1 67.8 1 25.0-120 26.1 29 Di-n-octyl phthalate 0.798 U 0.445 0.590 55.8 73.9 1 21.0-123 27.9 29 Pyrene 0.798 U 0.378 0.492 47.4 61.7 1 16.0-121 26.2 32 1,2,4-Trichlorobenzene 0.798 U 0.286 0.361 35.9 45.2 1 12.0-120 23.1 37 4-Chloro-3-methylphenol 0.798 U 0.333 0.410 41.7 51.4 1 15.0-120 20.8 30 2-Chlorophenol 0.798 U 0.357 0.438 44.8 54.9 1 15.0-120 20.3 37 2,4-Dichlorophenol 0.798 U 0.281 0.343 35.3 42.9 1 20.0-120 19.6 31 2,4-Dimethylphenol 0.798 U 0.272 0.334 34.0 41.9 1 10.0-120 20.6 33 4,6-Dinitro-2-methylphenol 0.798 U 0.434 0.523 54.4 65.5 1 10.0-120 18.4 39 2,4-Dinitrophenol 0.798 U 0.388 0.428 48.6 53.7 1 10.0-121 9.90 40 2-Nitrophenol 0.798 U 0.326 0.399 40.8 50.0 1 12.0-120 20.3 39 4-Nitrophenol 0.798 U 0.417 0.499 52.3 62.6 1 10.0-137 17.9 32 Pentachlorophenol 0.798 U 0.335 0.398 42.0 49.8 1 10.0-160 17.0 31 Phenol 0.798 U 0.356 0.437 44.6 54.8 1 12.0-120 20.4 38 2,4,6-Trichlorophenol 0.798 U 0.334 0.421 41.9 52.8 1 19.0-120 23.0 32 (S) 2-Fluorophenol 57.2 64.3 12.0-120 (S) Phenol-d5 52.5 58.4 10.0-120 (S) Nitrobenzene-d5 46.6 52.5 10.0-122 (S) 2-Fluorobiphenyl 50.0 58.9 15.0-120 (S) 2,4,6-Tribromophenol 63.7 74.4 10.0-127 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/16/24 11:51 83 of 89 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/19/24 20:18 83 of 89 QUALITY CONTROL SUMMARYWG2221334 Semi Volatile Organic Compounds (GC/MS) by Method 8270E L1701794-02 L1701865-06 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1701865-06 02/09/24 04:52 • (MS) R4031845-3 02/09/24 05:17 • (MSD) R4031845-4 02/09/24 05:42 Spike Amount (dry) Original Result (dry)MS Result (dry)MSD Result (dry)MS Rec.MSD Rec.Dilution Rec. Limits MS Qualifier MSD Qualifier RPD RPD Limits Analyte mg/kg %%%%% (S) p-Terphenyl-d14 58.9 67.8 10.0-120 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/16/24 11:51 84 of 89 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/19/24 20:18 84 of 89 GLOSSARY OF TERMS Guide to Reading and Understanding Your Laboratory Report The information below is designed to better explain the various terms used in your report of analytical results from the Laboratory. This is not intended as a comprehensive explanation, and if you have additional questions please contact your project representative. Results Disclaimer - Information that may be provided by the customer, and contained within this report, include Permit Limits, Project Name, Sample ID, Sample Matrix, Sample Preservation, Field Blanks, Field Spikes, Field Duplicates, On-Site Data, Sampling Collection Dates/Times, and Sampling Location. Results relate to the accuracy of this information provided, and as the samples are received. Abbreviations and Definitions (dry)Results are reported based on the dry weight of the sample. [this will only be present on a dry report basis for soils]. MDL Method Detection Limit. MDL (dry)Method Detection Limit. RDL Reported Detection Limit. RDL (dry)Reported Detection Limit. Rec.Recovery. RPD Relative Percent Difference. SDG Sample Delivery Group. (S) Surrogate (Surrogate Standard) - Analytes added to every blank, sample, Laboratory Control Sample/Duplicate and Matrix Spike/Duplicate; used to evaluate analytical efficiency by measuring recovery. Surrogates are not expected to be detected in all environmental media. U Not detected at the Reporting Limit (or MDL where applicable). Analyte The name of the particular compound or analysis performed. Some Analyses and Methods will have multiple analytes reported. Dilution If the sample matrix contains an interfering material, the sample preparation volume or weight values differ from the standard, or if concentrations of analytes in the sample are higher than the highest limit of concentration that the laboratory can accurately report, the sample may be diluted for analysis. If a value different than 1 is used in this field, the result reported has already been corrected for this factor. Limits These are the target % recovery ranges or % difference value that the laboratory has historically determined as normal for the method and analyte being reported. Successful QC Sample analysis will target all analytes recovered or duplicated within these ranges. Original Sample The non-spiked sample in the prep batch used to determine the Relative Percent Difference (RPD) from a quality control sample. The Original Sample may not be included within the reported SDG. Qualifier This column provides a letter and/or number designation that corresponds to additional information concerning the result reported. If a Qualifier is present, a definition per Qualifier is provided within the Glossary and Definitions page and potentially a discussion of possible implications of the Qualifier in the Case Narrative if applicable. Result The actual analytical final result (corrected for any sample specific characteristics) reported for your sample. If there was no measurable result returned for a specific analyte, the result in this column may state “ND” (Not Detected) or “BDL” (Below Detectable Levels). The information in the results column should always be accompanied by either an MDL (Method Detection Limit) or RDL (Reporting Detection Limit) that defines the lowest value that the laboratory could detect or report for this analyte. Uncertainty (Radiochemistry)Confidence level of 2 sigma. Case Narrative (Cn) A brief discussion about the included sample results, including a discussion of any non-conformances to protocol observed either at sample receipt by the laboratory from the field or during the analytical process. If present, there will be a section in the Case Narrative to discuss the meaning of any data qualifiers used in the report. Quality Control Summary (Qc) This section of the report includes the results of the laboratory quality control analyses required by procedure or analytical methods to assist in evaluating the validity of the results reported for your samples. These analyses are not being performed on your samples typically, but on laboratory generated material. Sample Chain of Custody (Sc) This is the document created in the field when your samples were initially collected. This is used to verify the time and date of collection, the person collecting the samples, and the analyses that the laboratory is requested to perform. This chain of custody also documents all persons (excluding commercial shippers) that have had control or possession of the samples from the time of collection until delivery to the laboratory for analysis. Sample Results (Sr) This section of your report will provide the results of all testing performed on your samples. These results are provided by sample ID and are separated by the analyses performed on each sample. The header line of each analysis section for each sample will provide the name and method number for the analysis reported. Sample Summary (Ss)This section of the Analytical Report defines the specific analyses performed for each sample ID, including the dates and times of preparation and/or analysis. Qualifier Description B The same analyte is found in the associated blank. C3 The reported concentration is an estimate. The continuing calibration standard associated with this data responded low. Method sensitivity check is acceptable. C5 The reported concentration is an estimate. The continuing calibration standard associated with this data responded high. Data is likely to show a high bias concerning the result. J The identification of the analyte is acceptable; the reported value is an estimate. J3 The associated batch QC was outside the established quality control range for precision. J4 The associated batch QC was outside the established quality control range for accuracy. J6 The sample matrix interfered with the ability to make any accurate determination; spike value is low. 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/16/24 11:51 85 of 89 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/19/24 20:18 85 of 89 GLOSSARY OF TERMS Qualifier Description Q Sample was prepared and/or analyzed past holding time as defined in the method. Concentrations should be considered minimum values. 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/16/24 11:51 86 of 89 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/19/24 20:18 86 of 89 Pace Analytical National 12065 Lebanon Rd Mount Juliet, TN 37122 Alabama 40660 Nebraska NE-OS-15-05 Alaska 17-026 Nevada TN000032021-1 Arizona AZ0612 New Hampshire 2975 Arkansas 88-0469 New Jersey–NELAP TN002 California 2932 New Mexico ¹TN00003 Colorado TN00003 New York 11742 Connecticut PH-0197 North Carolina Env375 Florida E87487 North Carolina ¹DW21704 Georgia NELAP North Carolina ³41 Georgia ¹923 North Dakota R-140 Idaho TN00003 Ohio–VAP CL0069 Illinois 200008 Oklahoma 9915 Indiana C-TN-01 Oregon TN200002 Iowa 364 Pennsylvania 68-02979 Kansas E-10277 Rhode Island LAO00356 Kentucky ¹ ⁶KY90010 South Carolina 84004002 Kentucky ²16 South Dakota n/a Louisiana AI30792 Tennessee ¹ ⁴2006 Louisiana LA018 Texas T104704245-20-18 Maine TN00003 Texas ⁵LAB0152 Maryland 324 Utah TN000032021-11 Massachusetts M-TN003 Vermont VT2006 Michigan 9958 Virginia 110033 Minnesota 047-999-395 Washington C847 Mississippi TN00003 West Virginia 233 Missouri 340 Wisconsin 998093910 Montana CERT0086 Wyoming A2LA A2LA – ISO 17025 1461.01 AIHA-LAP,LLC EMLAP 100789 A2LA – ISO 17025 ⁵1461.02 DOD 1461.01 Canada 1461.01 USDA P330-15-00234 EPA–Crypto TN00003 ACCREDITATIONS & LOCATIONS ¹ Drinking Water ² Underground Storage Tanks ³ Aquatic Toxicity ⁴ Chemical/Microbiological ⁵ Mold ⁶ Wastewater n/a Accreditation not applicable * Not all certifications held by the laboratory are applicable to the results reported in the attached report. * Accreditation is only applicable to the test methods specified on each scope of accreditation held by Pace Analytical. 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/16/24 11:51 87 of 89 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1701794 02/19/24 20:18 87 of 89 ANALYTICAL REPORT February 21, 2024 AECOM - Raleigh, NC Sample Delivery Group:L1704882 Samples Received:02/13/2024 Project Number:60722767 Description:Frye and Webster DC410064 Site:DC410064 Report To:Stephanie Hempel 5438 Wade Park Blvd. Suite 200 Raleigh, NC 27607 Entire Report Reviewed By: February 21, 2024 [Preliminary Report] Chris McCord Project Manager Results relate only to the items tested or calibrated and are reported as rounded values. This test report shall not be reproduced, except in full, without written approval of the laboratory. Where applicable, sampling conducted by Pace Analytical National is performed per guidance provided in laboratory standard operating procedures ENV-SOP-MTJL-0067 and ENV-SOP-MTJL-0068. Where sampling conducted by the customer, results relate to the accuracy of the information provided, and as the samples are received. Pace Analytical National 12065 Lebanon Rd Mount Juliet, TN 37122 615-758-5858 800-767-5859 www.pacenational.com 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1704882 02/21/24 11:14 1 of 28 February 26, 2024 Chris McCord Project Manager ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1704882 02/26/24 10:07 1 of 28 TABLE OF CONTENTS Cp: Cover Page 1 Tc: Table of Contents 2 Ss: Sample Summary 3 Cn: Case Narrative 4 Sr: Sample Results 5 MW-1 L1704882-01 5 MW-3 L1704882-02 8 MW-2 L1704882-03 11 MW-4 L1704882-04 14 Qc: Quality Control Summary 17 Volatile Organic Compounds (GC/MS) by Method 8260D 17 Semi Volatile Organic Compounds (GC/MS) by Method 8270E 22 Gl: Glossary of Terms 26 Al: Accreditations & Locations 27 Sc: Sample Chain of Custody 28 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1704882 02/21/24 11:14 2 of 28 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1704882 02/26/24 10:07 2 of 28 SAMPLE SUMMARY Collected by Collected date/time Received date/time MW-1 L1704882-01 GW EM 02/09/24 10:20 02/13/24 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (GC/MS) by Method 8260D WG2226299 1 02/14/24 16:17 02/14/24 16:17 DYW Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260D WG2229263 25 02/20/24 01:16 02/20/24 01:16 DYW Mt. Juliet, TN Semi Volatile Organic Compounds (GC/MS) by Method 8270E WG2225388 1.06 02/13/24 16:51 02/15/24 19:09 ALM Mt. Juliet, TN Collected by Collected date/time Received date/time MW-3 L1704882-02 GW EM 02/09/24 11:10 02/13/24 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (GC/MS) by Method 8260D WG2226299 1 02/14/24 16:36 02/14/24 16:36 DYW Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260D WG2229263 1 02/20/24 01:38 02/20/24 01:38 DYW Mt. Juliet, TN Semi Volatile Organic Compounds (GC/MS) by Method 8270E WG2225388 1 02/13/24 16:51 02/15/24 19:31 ALM Mt. Juliet, TN Collected by Collected date/time Received date/time MW-2 L1704882-03 GW EM 02/09/24 11:55 02/13/24 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (GC/MS) by Method 8260D WG2226299 5 02/14/24 21:37 02/14/24 21:37 DYW Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260D WG2229263 250 02/20/24 01:59 02/20/24 01:59 DYW Mt. Juliet, TN Semi Volatile Organic Compounds (GC/MS) by Method 8270E WG2225388 1 02/13/24 16:51 02/15/24 19:53 ALM Mt. Juliet, TN Collected by Collected date/time Received date/time MW-4 L1704882-04 GW EM 02/09/24 12:45 02/13/24 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (GC/MS) by Method 8260D WG2226299 1 02/14/24 16:55 02/14/24 16:55 DYW Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260D WG2229263 20 02/20/24 02:20 02/20/24 02:20 DYW Mt. Juliet, TN Semi Volatile Organic Compounds (GC/MS) by Method 8270E WG2225388 1.05 02/13/24 16:51 02/15/24 20:37 ALM Mt. Juliet, TN 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1704882 02/21/24 11:14 3 of 28 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1704882 02/26/24 10:07 3 of 28 CASE NARRATIVE All sample aliquots were received at the correct temperature, in the proper containers, with the appropriate preservatives, and within method specified holding times, unless qualified or notated within the report. Where applicable, all MDL (LOD) and RDL (LOQ) values reported for environmental samples have been corrected for the dilution factor used in the analysis. All Method and Batch Quality Control are within established criteria except where addressed in this case narrative, a non-conformance form or properly qualified within the sample results. By my digital signature below, I affirm to the best of my knowledge, all problems/anomalies observed by the laboratory as having the potential to affect the quality of the data have been identified by the laboratory, and no information or data have been knowingly withheld that would affect the quality of the data. [Preliminary Report] Chris McCord Project Manager 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1704882 02/21/24 11:14 4 of 28 Chris McCord Project Manager ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1704882 02/26/24 10:07 4 of 28 SAMPLE RESULTS - 01 L1704882 MW-1 Collected date/time: 02/09/24 10:20 Volatile Organic Compounds (GC/MS) by Method 8260D Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Acetone U 11.3 50.0 1 02/14/2024 16:17 WG2226299 Acrolein U J4 2.54 50.0 1 02/14/2024 16:17 WG2226299 Acrylonitrile U C3 0.671 10.0 1 02/14/2024 16:17 WG2226299 Benzene 561 2.35 25.0 25 02/20/2024 01:16 WG2229263 Bromobenzene U 0.118 1.00 1 02/14/2024 16:17 WG2226299 Bromodichloromethane U 0.136 1.00 1 02/14/2024 16:17 WG2226299 Bromoform U 0.129 1.00 1 02/14/2024 16:17 WG2226299 Bromomethane U 0.605 5.00 1 02/14/2024 16:17 WG2226299 n-Butylbenzene U 0.157 1.00 1 02/14/2024 16:17 WG2226299 sec-Butylbenzene 0.867 J 0.125 1.00 1 02/14/2024 16:17 WG2226299 tert-Butylbenzene 0.464 J 0.127 1.00 1 02/14/2024 16:17 WG2226299 Carbon tetrachloride U 0.128 1.00 1 02/14/2024 16:17 WG2226299 Chlorobenzene U 0.116 1.00 1 02/14/2024 16:17 WG2226299 Chlorodibromomethane U 0.140 1.00 1 02/14/2024 16:17 WG2226299 Chloroethane U 0.192 5.00 1 02/14/2024 16:17 WG2226299 Chloroform U 0.111 5.00 1 02/14/2024 16:17 WG2226299 Chloromethane U C3 0.960 2.50 1 02/14/2024 16:17 WG2226299 2-Chlorotoluene U 0.106 1.00 1 02/14/2024 16:17 WG2226299 4-Chlorotoluene U 0.114 1.00 1 02/14/2024 16:17 WG2226299 1,2-Dibromo-3-Chloropropane U 0.276 5.00 1 02/14/2024 16:17 WG2226299 1,2-Dibromoethane U 0.126 1.00 1 02/14/2024 16:17 WG2226299 Dibromomethane U 0.122 1.00 1 02/14/2024 16:17 WG2226299 1,2-Dichlorobenzene U 0.107 1.00 1 02/14/2024 16:17 WG2226299 1,3-Dichlorobenzene U 0.110 1.00 1 02/14/2024 16:17 WG2226299 1,4-Dichlorobenzene U 0.120 1.00 1 02/14/2024 16:17 WG2226299 Dichlorodifluoromethane U 0.374 5.00 1 02/14/2024 16:17 WG2226299 1,1-Dichloroethane U 0.100 1.00 1 02/14/2024 16:17 WG2226299 1,2-Dichloroethane 3.22 0.0819 1.00 1 02/14/2024 16:17 WG2226299 1,1-Dichloroethene U 0.188 1.00 1 02/14/2024 16:17 WG2226299 cis-1,2-Dichloroethene U 0.126 1.00 1 02/14/2024 16:17 WG2226299 trans-1,2-Dichloroethene U 0.149 1.00 1 02/14/2024 16:17 WG2226299 1,2-Dichloropropane U C3 J4 0.149 1.00 1 02/14/2024 16:17 WG2226299 1,1-Dichloropropene U 0.142 1.00 1 02/14/2024 16:17 WG2226299 1,3-Dichloropropane U 0.110 1.00 1 02/14/2024 16:17 WG2226299 cis-1,3-Dichloropropene U 0.111 1.00 1 02/14/2024 16:17 WG2226299 trans-1,3-Dichloropropene U 0.118 1.00 1 02/14/2024 16:17 WG2226299 2,2-Dichloropropane U 0.161 1.00 1 02/14/2024 16:17 WG2226299 Di-isopropyl ether 10.4 C3 0.105 1.00 1 02/14/2024 16:17 WG2226299 Ethylbenzene U 0.137 1.00 1 02/14/2024 16:17 WG2226299 Hexachloro-1,3-butadiene U 0.337 1.00 1 02/14/2024 16:17 WG2226299 Isopropylbenzene 9.21 0.105 1.00 1 02/14/2024 16:17 WG2226299 p-Isopropyltoluene 0.248 J 0.120 1.00 1 02/14/2024 16:17 WG2226299 2-Butanone (MEK)U 1.19 10.0 1 02/14/2024 16:17 WG2226299 Methylene Chloride U 0.430 5.00 1 02/14/2024 16:17 WG2226299 4-Methyl-2-pentanone (MIBK)U 0.478 10.0 1 02/14/2024 16:17 WG2226299 Methyl tert-butyl ether 11.4 0.101 1.00 1 02/14/2024 16:17 WG2226299 Naphthalene 14.7 1.00 5.00 1 02/14/2024 16:17 WG2226299 n-Propylbenzene 0.720 J 0.0993 1.00 1 02/14/2024 16:17 WG2226299 Styrene U 0.118 1.00 1 02/14/2024 16:17 WG2226299 1,1,1,2-Tetrachloroethane U 0.147 1.00 1 02/14/2024 16:17 WG2226299 1,1,2,2-Tetrachloroethane U 0.133 1.00 1 02/14/2024 16:17 WG2226299 1,1,2-Trichlorotrifluoroethane U 0.180 1.00 1 02/14/2024 16:17 WG2226299 Tetrachloroethene 1.60 0.300 1.00 1 02/14/2024 16:17 WG2226299 Toluene 0.382 J 0.278 1.00 1 02/14/2024 16:17 WG2226299 1,2,3-Trichlorobenzene U 0.230 1.00 1 02/14/2024 16:17 WG2226299 1,2,4-Trichlorobenzene U 0.481 1.00 1 02/14/2024 16:17 WG2226299 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1704882 02/21/24 11:14 5 of 28 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1704882 02/26/24 10:07 5 of 28 SAMPLE RESULTS - 01 L1704882 MW-1 Collected date/time: 02/09/24 10:20 Volatile Organic Compounds (GC/MS) by Method 8260D Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time 1,1,1-Trichloroethane U 0.149 1.00 1 02/14/2024 16:17 WG2226299 1,1,2-Trichloroethane U 0.158 1.00 1 02/14/2024 16:17 WG2226299 Trichloroethene 0.214 J 0.190 1.00 1 02/14/2024 16:17 WG2226299 Trichlorofluoromethane U 0.160 5.00 1 02/14/2024 16:17 WG2226299 1,2,3-Trichloropropane U 0.237 2.50 1 02/14/2024 16:17 WG2226299 1,2,4-Trimethylbenzene U 0.322 1.00 1 02/14/2024 16:17 WG2226299 1,2,3-Trimethylbenzene U 0.104 1.00 1 02/14/2024 16:17 WG2226299 1,3,5-Trimethylbenzene U 0.104 1.00 1 02/14/2024 16:17 WG2226299 Vinyl chloride U 0.234 1.00 1 02/14/2024 16:17 WG2226299 Xylenes, Total U 0.174 3.00 1 02/14/2024 16:17 WG2226299 (S) Toluene-d8 102 80.0-120 02/14/2024 16:17 WG2226299 (S) Toluene-d8 93.0 80.0-120 02/20/2024 01:16 WG2229263 (S) 4-Bromofluorobenzene 95.9 77.0-126 02/14/2024 16:17 WG2226299 (S) 4-Bromofluorobenzene 107 77.0-126 02/20/2024 01:16 WG2229263 (S) 1,2-Dichloroethane-d4 100 70.0-130 02/14/2024 16:17 WG2226299 (S) 1,2-Dichloroethane-d4 92.6 70.0-130 02/20/2024 01:16 WG2229263 Semi Volatile Organic Compounds (GC/MS) by Method 8270E Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Acenaphthene U 0.0939 1.06 1.06 02/15/2024 19:09 WG2225388 Acenaphthylene U 0.0976 1.06 1.06 02/15/2024 19:09 WG2225388 Anthracene U 0.0852 1.06 1.06 02/15/2024 19:09 WG2225388 Benzidine 3.96 J J3 J4 3.96 10.6 1.06 02/15/2024 19:09 WG2225388 Benzo(a)anthracene U 0.211 1.06 1.06 02/15/2024 19:09 WG2225388 Benzo(b)fluoranthene U 0.138 1.06 1.06 02/15/2024 19:09 WG2225388 Benzo(k)fluoranthene U 0.127 1.06 1.06 02/15/2024 19:09 WG2225388 Benzo(g,h,i)perylene U 0.128 1.06 1.06 02/15/2024 19:09 WG2225388 Benzo(a)pyrene U 0.0404 1.06 1.06 02/15/2024 19:09 WG2225388 Bis(2-chlorethoxy)methane U 0.123 10.6 1.06 02/15/2024 19:09 WG2225388 Bis(2-chloroethyl)ether U 0.145 10.6 1.06 02/15/2024 19:09 WG2225388 2,2-Oxybis(1-Chloropropane)U 0.223 10.6 1.06 02/15/2024 19:09 WG2225388 4-Bromophenyl-phenylether U 0.0930 10.6 1.06 02/15/2024 19:09 WG2225388 2-Chloronaphthalene U 0.0687 1.06 1.06 02/15/2024 19:09 WG2225388 4-Chlorophenyl-phenylether U 0.0982 10.6 1.06 02/15/2024 19:09 WG2225388 Chrysene U 0.138 1.06 1.06 02/15/2024 19:09 WG2225388 Dibenz(a,h)anthracene U 0.0683 1.06 1.06 02/15/2024 19:09 WG2225388 1,2-Dichlorobenzene U 0.0756 10.6 1.06 02/15/2024 19:09 WG2225388 1,3-Dichlorobenzene U 0.140 10.6 1.06 02/15/2024 19:09 WG2225388 1,4-Dichlorobenzene U 0.0999 10.6 1.06 02/15/2024 19:09 WG2225388 3,3-Dichlorobenzidine U 0.225 10.6 1.06 02/15/2024 19:09 WG2225388 2,4-Dinitrotoluene U 0.104 10.6 1.06 02/15/2024 19:09 WG2225388 2,6-Dinitrotoluene U 0.265 10.6 1.06 02/15/2024 19:09 WG2225388 Fluoranthene U 0.108 1.06 1.06 02/15/2024 19:09 WG2225388 Fluorene 0.136 J 0.0895 1.06 1.06 02/15/2024 19:09 WG2225388 Hexachlorobenzene U 0.0800 1.06 1.06 02/15/2024 19:09 WG2225388 Hexachloro-1,3-butadiene U 0.103 10.6 1.06 02/15/2024 19:09 WG2225388 Hexachlorocyclopentadiene U 0.0634 10.6 1.06 02/15/2024 19:09 WG2225388 Hexachloroethane U 0.135 10.6 1.06 02/15/2024 19:09 WG2225388 Indeno(1,2,3-cd)pyrene U 0.296 1.06 1.06 02/15/2024 19:09 WG2225388 Isophorone U 0.152 10.6 1.06 02/15/2024 19:09 WG2225388 Naphthalene U 0.169 1.06 1.06 02/15/2024 19:09 WG2225388 Nitrobenzene U 0.315 10.6 1.06 02/15/2024 19:09 WG2225388 n-Nitrosodimethylamine U 1.06 10.6 1.06 02/15/2024 19:09 WG2225388 n-Nitrosodiphenylamine U 2.51 10.6 1.06 02/15/2024 19:09 WG2225388 n-Nitrosodi-n-propylamine U 0.277 10.6 1.06 02/15/2024 19:09 WG2225388 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1704882 02/21/24 11:14 6 of 28 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1704882 02/26/24 10:07 6 of 28 SAMPLE RESULTS - 01 L1704882 MW-1 Collected date/time: 02/09/24 10:20 Semi Volatile Organic Compounds (GC/MS) by Method 8270E Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Phenanthrene 0.268 J 0.119 1.06 1.06 02/15/2024 19:09 WG2225388 Benzylbutyl phthalate U 0.811 3.18 1.06 02/15/2024 19:09 WG2225388 Bis(2-ethylhexyl)phthalate U 0.949 3.18 1.06 02/15/2024 19:09 WG2225388 Di-n-butyl phthalate U 0.480 3.18 1.06 02/15/2024 19:09 WG2225388 Diethyl phthalate 0.435 J 0.304 3.18 1.06 02/15/2024 19:09 WG2225388 Dimethyl phthalate U 0.276 3.18 1.06 02/15/2024 19:09 WG2225388 Di-n-octyl phthalate U 0.988 3.18 1.06 02/15/2024 19:09 WG2225388 Pyrene U 0.113 1.06 1.06 02/15/2024 19:09 WG2225388 1,2,4-Trichlorobenzene U 0.0740 10.6 1.06 02/15/2024 19:09 WG2225388 4-Chloro-3-methylphenol U J4 0.139 10.6 1.06 02/15/2024 19:09 WG2225388 2-Chlorophenol U 0.141 10.6 1.06 02/15/2024 19:09 WG2225388 2,4-Dichlorophenol U 0.108 10.6 1.06 02/15/2024 19:09 WG2225388 2,4-Dimethylphenol U 0.0674 10.6 1.06 02/15/2024 19:09 WG2225388 4,6-Dinitro-2-methylphenol U 1.19 10.6 1.06 02/15/2024 19:09 WG2225388 2,4-Dinitrophenol U 6.29 10.6 1.06 02/15/2024 19:09 WG2225388 2-Nitrophenol U 0.124 10.6 1.06 02/15/2024 19:09 WG2225388 4-Nitrophenol U 0.152 10.6 1.06 02/15/2024 19:09 WG2225388 Pentachlorophenol U 0.332 10.6 1.06 02/15/2024 19:09 WG2225388 Phenol U 4.59 10.6 1.06 02/15/2024 19:09 WG2225388 2,4,6-Trichlorophenol U 0.106 10.6 1.06 02/15/2024 19:09 WG2225388 (S) 2-Fluorophenol 34.9 10.0-120 02/15/2024 19:09 WG2225388 (S) Phenol-d5 24.3 10.0-120 02/15/2024 19:09 WG2225388 (S) Nitrobenzene-d5 50.6 10.0-127 02/15/2024 19:09 WG2225388 (S) 2-Fluorobiphenyl 50.6 10.0-130 02/15/2024 19:09 WG2225388 (S) 2,4,6-Tribromophenol 56.8 10.0-155 02/15/2024 19:09 WG2225388 (S) p-Terphenyl-d14 59.1 10.0-128 02/15/2024 19:09 WG2225388 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1704882 02/21/24 11:14 7 of 28 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1704882 02/26/24 10:07 7 of 28 SAMPLE RESULTS - 02 L1704882 MW-3 Collected date/time: 02/09/24 11:10 Volatile Organic Compounds (GC/MS) by Method 8260D Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Acetone 33.3 J 11.3 50.0 1 02/14/2024 16:36 WG2226299 Acrolein U J4 2.54 50.0 1 02/14/2024 16:36 WG2226299 Acrylonitrile U C3 0.671 10.0 1 02/14/2024 16:36 WG2226299 Benzene 2.30 0.0941 1.00 1 02/20/2024 01:38 WG2229263 Bromobenzene U 0.118 1.00 1 02/14/2024 16:36 WG2226299 Bromodichloromethane U 0.136 1.00 1 02/14/2024 16:36 WG2226299 Bromoform U 0.129 1.00 1 02/14/2024 16:36 WG2226299 Bromomethane U 0.605 5.00 1 02/14/2024 16:36 WG2226299 n-Butylbenzene U 0.157 1.00 1 02/14/2024 16:36 WG2226299 sec-Butylbenzene U 0.125 1.00 1 02/14/2024 16:36 WG2226299 tert-Butylbenzene U 0.127 1.00 1 02/14/2024 16:36 WG2226299 Carbon tetrachloride U 0.128 1.00 1 02/14/2024 16:36 WG2226299 Chlorobenzene U 0.116 1.00 1 02/14/2024 16:36 WG2226299 Chlorodibromomethane U 0.140 1.00 1 02/14/2024 16:36 WG2226299 Chloroethane U 0.192 5.00 1 02/14/2024 16:36 WG2226299 Chloroform U 0.111 5.00 1 02/14/2024 16:36 WG2226299 Chloromethane U C3 0.960 2.50 1 02/14/2024 16:36 WG2226299 2-Chlorotoluene U 0.106 1.00 1 02/14/2024 16:36 WG2226299 4-Chlorotoluene U 0.114 1.00 1 02/14/2024 16:36 WG2226299 1,2-Dibromo-3-Chloropropane U 0.276 5.00 1 02/14/2024 16:36 WG2226299 1,2-Dibromoethane U 0.126 1.00 1 02/14/2024 16:36 WG2226299 Dibromomethane U 0.122 1.00 1 02/14/2024 16:36 WG2226299 1,2-Dichlorobenzene U 0.107 1.00 1 02/14/2024 16:36 WG2226299 1,3-Dichlorobenzene U 0.110 1.00 1 02/14/2024 16:36 WG2226299 1,4-Dichlorobenzene U 0.120 1.00 1 02/14/2024 16:36 WG2226299 Dichlorodifluoromethane U 0.374 5.00 1 02/14/2024 16:36 WG2226299 1,1-Dichloroethane U 0.100 1.00 1 02/14/2024 16:36 WG2226299 1,2-Dichloroethane U 0.0819 1.00 1 02/14/2024 16:36 WG2226299 1,1-Dichloroethene U 0.188 1.00 1 02/14/2024 16:36 WG2226299 cis-1,2-Dichloroethene U 0.126 1.00 1 02/14/2024 16:36 WG2226299 trans-1,2-Dichloroethene U 0.149 1.00 1 02/14/2024 16:36 WG2226299 1,2-Dichloropropane U C3 J4 0.149 1.00 1 02/14/2024 16:36 WG2226299 1,1-Dichloropropene U 0.142 1.00 1 02/14/2024 16:36 WG2226299 1,3-Dichloropropane U 0.110 1.00 1 02/14/2024 16:36 WG2226299 cis-1,3-Dichloropropene U 0.111 1.00 1 02/14/2024 16:36 WG2226299 trans-1,3-Dichloropropene U 0.118 1.00 1 02/14/2024 16:36 WG2226299 2,2-Dichloropropane U 0.161 1.00 1 02/14/2024 16:36 WG2226299 Di-isopropyl ether U C3 0.105 1.00 1 02/14/2024 16:36 WG2226299 Ethylbenzene U 0.137 1.00 1 02/14/2024 16:36 WG2226299 Hexachloro-1,3-butadiene U 0.337 1.00 1 02/14/2024 16:36 WG2226299 Isopropylbenzene U 0.105 1.00 1 02/14/2024 16:36 WG2226299 p-Isopropyltoluene U 0.120 1.00 1 02/14/2024 16:36 WG2226299 2-Butanone (MEK)U 1.19 10.0 1 02/14/2024 16:36 WG2226299 Methylene Chloride U 0.430 5.00 1 02/14/2024 16:36 WG2226299 4-Methyl-2-pentanone (MIBK)U 0.478 10.0 1 02/14/2024 16:36 WG2226299 Methyl tert-butyl ether U 0.101 1.00 1 02/14/2024 16:36 WG2226299 Naphthalene U 1.00 5.00 1 02/14/2024 16:36 WG2226299 n-Propylbenzene U 0.0993 1.00 1 02/14/2024 16:36 WG2226299 Styrene U 0.118 1.00 1 02/14/2024 16:36 WG2226299 1,1,1,2-Tetrachloroethane U 0.147 1.00 1 02/14/2024 16:36 WG2226299 1,1,2,2-Tetrachloroethane U 0.133 1.00 1 02/14/2024 16:36 WG2226299 1,1,2-Trichlorotrifluoroethane U 0.180 1.00 1 02/14/2024 16:36 WG2226299 Tetrachloroethene U 0.300 1.00 1 02/14/2024 16:36 WG2226299 Toluene U 0.278 1.00 1 02/14/2024 16:36 WG2226299 1,2,3-Trichlorobenzene U 0.230 1.00 1 02/14/2024 16:36 WG2226299 1,2,4-Trichlorobenzene U 0.481 1.00 1 02/14/2024 16:36 WG2226299 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1704882 02/21/24 11:14 8 of 28 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1704882 02/26/24 10:07 8 of 28 SAMPLE RESULTS - 02 L1704882 MW-3 Collected date/time: 02/09/24 11:10 Volatile Organic Compounds (GC/MS) by Method 8260D Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time 1,1,1-Trichloroethane U 0.149 1.00 1 02/14/2024 16:36 WG2226299 1,1,2-Trichloroethane U 0.158 1.00 1 02/14/2024 16:36 WG2226299 Trichloroethene U 0.190 1.00 1 02/14/2024 16:36 WG2226299 Trichlorofluoromethane U 0.160 5.00 1 02/14/2024 16:36 WG2226299 1,2,3-Trichloropropane U 0.237 2.50 1 02/14/2024 16:36 WG2226299 1,2,4-Trimethylbenzene U 0.322 1.00 1 02/14/2024 16:36 WG2226299 1,2,3-Trimethylbenzene U 0.104 1.00 1 02/14/2024 16:36 WG2226299 1,3,5-Trimethylbenzene U 0.104 1.00 1 02/14/2024 16:36 WG2226299 Vinyl chloride U 0.234 1.00 1 02/14/2024 16:36 WG2226299 Xylenes, Total U 0.174 3.00 1 02/14/2024 16:36 WG2226299 (S) Toluene-d8 104 80.0-120 02/14/2024 16:36 WG2226299 (S) Toluene-d8 95.5 80.0-120 02/20/2024 01:38 WG2229263 (S) 4-Bromofluorobenzene 95.9 77.0-126 02/14/2024 16:36 WG2226299 (S) 4-Bromofluorobenzene 105 77.0-126 02/20/2024 01:38 WG2229263 (S) 1,2-Dichloroethane-d4 97.1 70.0-130 02/14/2024 16:36 WG2226299 (S) 1,2-Dichloroethane-d4 95.2 70.0-130 02/20/2024 01:38 WG2229263 Semi Volatile Organic Compounds (GC/MS) by Method 8270E Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Acenaphthene U 0.0886 1.00 1 02/15/2024 19:31 WG2225388 Acenaphthylene U 0.0921 1.00 1 02/15/2024 19:31 WG2225388 Anthracene U 0.0804 1.00 1 02/15/2024 19:31 WG2225388 Benzidine U J3 J4 3.74 10.0 1 02/15/2024 19:31 WG2225388 Benzo(a)anthracene U 0.199 1.00 1 02/15/2024 19:31 WG2225388 Benzo(b)fluoranthene U 0.130 1.00 1 02/15/2024 19:31 WG2225388 Benzo(k)fluoranthene U 0.120 1.00 1 02/15/2024 19:31 WG2225388 Benzo(g,h,i)perylene U 0.121 1.00 1 02/15/2024 19:31 WG2225388 Benzo(a)pyrene U 0.0381 1.00 1 02/15/2024 19:31 WG2225388 Bis(2-chlorethoxy)methane U 0.116 10.0 1 02/15/2024 19:31 WG2225388 Bis(2-chloroethyl)ether U 0.137 10.0 1 02/15/2024 19:31 WG2225388 2,2-Oxybis(1-Chloropropane)U 0.210 10.0 1 02/15/2024 19:31 WG2225388 4-Bromophenyl-phenylether U 0.0877 10.0 1 02/15/2024 19:31 WG2225388 2-Chloronaphthalene U 0.0648 1.00 1 02/15/2024 19:31 WG2225388 4-Chlorophenyl-phenylether U 0.0926 10.0 1 02/15/2024 19:31 WG2225388 Chrysene U 0.130 1.00 1 02/15/2024 19:31 WG2225388 Dibenz(a,h)anthracene U 0.0644 1.00 1 02/15/2024 19:31 WG2225388 1,2-Dichlorobenzene U 0.0713 10.0 1 02/15/2024 19:31 WG2225388 1,3-Dichlorobenzene U 0.132 10.0 1 02/15/2024 19:31 WG2225388 1,4-Dichlorobenzene U 0.0942 10.0 1 02/15/2024 19:31 WG2225388 3,3-Dichlorobenzidine U 0.212 10.0 1 02/15/2024 19:31 WG2225388 2,4-Dinitrotoluene U 0.0983 10.0 1 02/15/2024 19:31 WG2225388 2,6-Dinitrotoluene U 0.250 10.0 1 02/15/2024 19:31 WG2225388 Fluoranthene U 0.102 1.00 1 02/15/2024 19:31 WG2225388 Fluorene U 0.0844 1.00 1 02/15/2024 19:31 WG2225388 Hexachlorobenzene U 0.0755 1.00 1 02/15/2024 19:31 WG2225388 Hexachloro-1,3-butadiene U 0.0968 10.0 1 02/15/2024 19:31 WG2225388 Hexachlorocyclopentadiene U 0.0598 10.0 1 02/15/2024 19:31 WG2225388 Hexachloroethane U 0.127 10.0 1 02/15/2024 19:31 WG2225388 Indeno(1,2,3-cd)pyrene U 0.279 1.00 1 02/15/2024 19:31 WG2225388 Isophorone U 0.143 10.0 1 02/15/2024 19:31 WG2225388 Naphthalene U 0.159 1.00 1 02/15/2024 19:31 WG2225388 Nitrobenzene U 0.297 10.0 1 02/15/2024 19:31 WG2225388 n-Nitrosodimethylamine U 0.998 10.0 1 02/15/2024 19:31 WG2225388 n-Nitrosodiphenylamine U 2.37 10.0 1 02/15/2024 19:31 WG2225388 n-Nitrosodi-n-propylamine U 0.261 10.0 1 02/15/2024 19:31 WG2225388 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1704882 02/21/24 11:14 9 of 28 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1704882 02/26/24 10:07 9 of 28 SAMPLE RESULTS - 02 L1704882 MW-3 Collected date/time: 02/09/24 11:10 Semi Volatile Organic Compounds (GC/MS) by Method 8270E Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Phenanthrene U 0.112 1.00 1 02/15/2024 19:31 WG2225388 Benzylbutyl phthalate U 0.765 3.00 1 02/15/2024 19:31 WG2225388 Bis(2-ethylhexyl)phthalate U 0.895 3.00 1 02/15/2024 19:31 WG2225388 Di-n-butyl phthalate U 0.453 3.00 1 02/15/2024 19:31 WG2225388 Diethyl phthalate U 0.287 3.00 1 02/15/2024 19:31 WG2225388 Dimethyl phthalate U 0.260 3.00 1 02/15/2024 19:31 WG2225388 Di-n-octyl phthalate U 0.932 3.00 1 02/15/2024 19:31 WG2225388 Pyrene U 0.107 1.00 1 02/15/2024 19:31 WG2225388 1,2,4-Trichlorobenzene U 0.0698 10.0 1 02/15/2024 19:31 WG2225388 4-Chloro-3-methylphenol U J4 0.131 10.0 1 02/15/2024 19:31 WG2225388 2-Chlorophenol U 0.133 10.0 1 02/15/2024 19:31 WG2225388 2,4-Dichlorophenol U 0.102 10.0 1 02/15/2024 19:31 WG2225388 2,4-Dimethylphenol U 0.0636 10.0 1 02/15/2024 19:31 WG2225388 4,6-Dinitro-2-methylphenol U 1.12 10.0 1 02/15/2024 19:31 WG2225388 2,4-Dinitrophenol U 5.93 10.0 1 02/15/2024 19:31 WG2225388 2-Nitrophenol U 0.117 10.0 1 02/15/2024 19:31 WG2225388 4-Nitrophenol U 0.143 10.0 1 02/15/2024 19:31 WG2225388 Pentachlorophenol U 0.313 10.0 1 02/15/2024 19:31 WG2225388 Phenol U 4.33 10.0 1 02/15/2024 19:31 WG2225388 2,4,6-Trichlorophenol U 0.100 10.0 1 02/15/2024 19:31 WG2225388 (S) 2-Fluorophenol 23.7 10.0-120 02/15/2024 19:31 WG2225388 (S) Phenol-d5 16.2 10.0-120 02/15/2024 19:31 WG2225388 (S) Nitrobenzene-d5 50.1 10.0-127 02/15/2024 19:31 WG2225388 (S) 2-Fluorobiphenyl 50.5 10.0-130 02/15/2024 19:31 WG2225388 (S) 2,4,6-Tribromophenol 37.1 10.0-155 02/15/2024 19:31 WG2225388 (S) p-Terphenyl-d14 42.7 10.0-128 02/15/2024 19:31 WG2225388 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1704882 02/21/24 11:14 10 of 28 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1704882 02/26/24 10:07 10 of 28 SAMPLE RESULTS - 03 L1704882 MW-2 Collected date/time: 02/09/24 11:55 Volatile Organic Compounds (GC/MS) by Method 8260D Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Acetone 67.9 J 56.5 250 5 02/14/2024 21:37 WG2226299 Acrolein U J4 12.7 250 5 02/14/2024 21:37 WG2226299 Acrylonitrile U C3 3.36 50.0 5 02/14/2024 21:37 WG2226299 Benzene 5700 23.5 250 250 02/20/2024 01:59 WG2229263 Bromobenzene U 0.590 5.00 5 02/14/2024 21:37 WG2226299 Bromodichloromethane U 0.680 5.00 5 02/14/2024 21:37 WG2226299 Bromoform U 0.645 5.00 5 02/14/2024 21:37 WG2226299 Bromomethane U 3.03 25.0 5 02/14/2024 21:37 WG2226299 n-Butylbenzene 3.40 J 0.785 5.00 5 02/14/2024 21:37 WG2226299 sec-Butylbenzene 2.76 J 0.625 5.00 5 02/14/2024 21:37 WG2226299 tert-Butylbenzene 0.665 J 0.635 5.00 5 02/14/2024 21:37 WG2226299 Carbon tetrachloride U 0.640 5.00 5 02/14/2024 21:37 WG2226299 Chlorobenzene 10.6 0.580 5.00 5 02/14/2024 21:37 WG2226299 Chlorodibromomethane U 0.700 5.00 5 02/14/2024 21:37 WG2226299 Chloroethane U 0.960 25.0 5 02/14/2024 21:37 WG2226299 Chloroform 19.5 J 0.555 25.0 5 02/14/2024 21:37 WG2226299 Chloromethane U C3 4.80 12.5 5 02/14/2024 21:37 WG2226299 2-Chlorotoluene U 0.530 5.00 5 02/14/2024 21:37 WG2226299 4-Chlorotoluene U 0.570 5.00 5 02/14/2024 21:37 WG2226299 1,2-Dibromo-3-Chloropropane U 1.38 25.0 5 02/14/2024 21:37 WG2226299 1,2-Dibromoethane U 0.630 5.00 5 02/14/2024 21:37 WG2226299 Dibromomethane U 0.610 5.00 5 02/14/2024 21:37 WG2226299 1,2-Dichlorobenzene U 0.535 5.00 5 02/14/2024 21:37 WG2226299 1,3-Dichlorobenzene U 0.550 5.00 5 02/14/2024 21:37 WG2226299 1,4-Dichlorobenzene 1.49 J 0.600 5.00 5 02/14/2024 21:37 WG2226299 Dichlorodifluoromethane U 1.87 25.0 5 02/14/2024 21:37 WG2226299 1,1-Dichloroethane U 0.500 5.00 5 02/14/2024 21:37 WG2226299 1,2-Dichloroethane 73.5 0.409 5.00 5 02/14/2024 21:37 WG2226299 1,1-Dichloroethene U 0.940 5.00 5 02/14/2024 21:37 WG2226299 cis-1,2-Dichloroethene 3.61 J 0.630 5.00 5 02/14/2024 21:37 WG2226299 trans-1,2-Dichloroethene U 0.745 5.00 5 02/14/2024 21:37 WG2226299 1,2-Dichloropropane 4.92 C3 J J4 0.745 5.00 5 02/14/2024 21:37 WG2226299 1,1-Dichloropropene U 0.710 5.00 5 02/14/2024 21:37 WG2226299 1,3-Dichloropropane U 0.550 5.00 5 02/14/2024 21:37 WG2226299 cis-1,3-Dichloropropene U 0.555 5.00 5 02/14/2024 21:37 WG2226299 trans-1,3-Dichloropropene U 0.590 5.00 5 02/14/2024 21:37 WG2226299 2,2-Dichloropropane U 0.805 5.00 5 02/14/2024 21:37 WG2226299 Di-isopropyl ether 301 C3 0.525 5.00 5 02/14/2024 21:37 WG2226299 Ethylbenzene 170 0.685 5.00 5 02/14/2024 21:37 WG2226299 Hexachloro-1,3-butadiene U 1.69 5.00 5 02/14/2024 21:37 WG2226299 Isopropylbenzene 26.8 0.525 5.00 5 02/14/2024 21:37 WG2226299 p-Isopropyltoluene 3.41 J 0.600 5.00 5 02/14/2024 21:37 WG2226299 2-Butanone (MEK)8.70 J 5.95 50.0 5 02/14/2024 21:37 WG2226299 Methylene Chloride 2.32 J 2.15 25.0 5 02/14/2024 21:37 WG2226299 4-Methyl-2-pentanone (MIBK)U 2.39 50.0 5 02/14/2024 21:37 WG2226299 Methyl tert-butyl ether 4620 25.3 250 250 02/20/2024 01:59 WG2229263 Naphthalene 26.6 5.00 25.0 5 02/14/2024 21:37 WG2226299 n-Propylbenzene 36.8 0.497 5.00 5 02/14/2024 21:37 WG2226299 Styrene 3.87 J 0.590 5.00 5 02/14/2024 21:37 WG2226299 1,1,1,2-Tetrachloroethane U 0.735 5.00 5 02/14/2024 21:37 WG2226299 1,1,2,2-Tetrachloroethane U 0.665 5.00 5 02/14/2024 21:37 WG2226299 1,1,2-Trichlorotrifluoroethane U 0.900 5.00 5 02/14/2024 21:37 WG2226299 Tetrachloroethene U 1.50 5.00 5 02/14/2024 21:37 WG2226299 Toluene 55.1 1.39 5.00 5 02/14/2024 21:37 WG2226299 1,2,3-Trichlorobenzene U 1.15 5.00 5 02/14/2024 21:37 WG2226299 1,2,4-Trichlorobenzene U 2.41 5.00 5 02/14/2024 21:37 WG2226299 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1704882 02/21/24 11:14 11 of 28 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1704882 02/26/24 10:07 11 of 28 SAMPLE RESULTS - 03 L1704882 MW-2 Collected date/time: 02/09/24 11:55 Volatile Organic Compounds (GC/MS) by Method 8260D Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time 1,1,1-Trichloroethane U 0.745 5.00 5 02/14/2024 21:37 WG2226299 1,1,2-Trichloroethane 1.44 J 0.790 5.00 5 02/14/2024 21:37 WG2226299 Trichloroethene 4.35 J 0.950 5.00 5 02/14/2024 21:37 WG2226299 Trichlorofluoromethane U 0.800 25.0 5 02/14/2024 21:37 WG2226299 1,2,3-Trichloropropane U 1.19 12.5 5 02/14/2024 21:37 WG2226299 1,2,4-Trimethylbenzene 98.3 1.61 5.00 5 02/14/2024 21:37 WG2226299 1,2,3-Trimethylbenzene 5.96 0.520 5.00 5 02/14/2024 21:37 WG2226299 1,3,5-Trimethylbenzene 21.2 0.520 5.00 5 02/14/2024 21:37 WG2226299 Vinyl chloride U 1.17 5.00 5 02/14/2024 21:37 WG2226299 Xylenes, Total 129 0.870 15.0 5 02/14/2024 21:37 WG2226299 (S) Toluene-d8 100 80.0-120 02/14/2024 21:37 WG2226299 (S) Toluene-d8 93.3 80.0-120 02/20/2024 01:59 WG2229263 (S) 4-Bromofluorobenzene 97.4 77.0-126 02/14/2024 21:37 WG2226299 (S) 4-Bromofluorobenzene 103 77.0-126 02/20/2024 01:59 WG2229263 (S) 1,2-Dichloroethane-d4 106 70.0-130 02/14/2024 21:37 WG2226299 (S) 1,2-Dichloroethane-d4 94.3 70.0-130 02/20/2024 01:59 WG2229263 Semi Volatile Organic Compounds (GC/MS) by Method 8270E Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Acenaphthene 0.0937 J 0.0886 1.00 1 02/15/2024 19:53 WG2225388 Acenaphthylene U 0.0921 1.00 1 02/15/2024 19:53 WG2225388 Anthracene U 0.0804 1.00 1 02/15/2024 19:53 WG2225388 Benzidine U J3 J4 3.74 10.0 1 02/15/2024 19:53 WG2225388 Benzo(a)anthracene 0.214 J 0.199 1.00 1 02/15/2024 19:53 WG2225388 Benzo(b)fluoranthene 0.191 J 0.130 1.00 1 02/15/2024 19:53 WG2225388 Benzo(k)fluoranthene 0.265 J 0.120 1.00 1 02/15/2024 19:53 WG2225388 Benzo(g,h,i)perylene 0.254 J 0.121 1.00 1 02/15/2024 19:53 WG2225388 Benzo(a)pyrene 0.120 J 0.0381 1.00 1 02/15/2024 19:53 WG2225388 Bis(2-chlorethoxy)methane U 0.116 10.0 1 02/15/2024 19:53 WG2225388 Bis(2-chloroethyl)ether U 0.137 10.0 1 02/15/2024 19:53 WG2225388 2,2-Oxybis(1-Chloropropane)U 0.210 10.0 1 02/15/2024 19:53 WG2225388 4-Bromophenyl-phenylether U 0.0877 10.0 1 02/15/2024 19:53 WG2225388 2-Chloronaphthalene U 0.0648 1.00 1 02/15/2024 19:53 WG2225388 4-Chlorophenyl-phenylether U 0.0926 10.0 1 02/15/2024 19:53 WG2225388 Chrysene 0.217 J 0.130 1.00 1 02/15/2024 19:53 WG2225388 Dibenz(a,h)anthracene 0.303 B J 0.0644 1.00 1 02/15/2024 19:53 WG2225388 1,2-Dichlorobenzene U 0.0713 10.0 1 02/15/2024 19:53 WG2225388 1,3-Dichlorobenzene U 0.132 10.0 1 02/15/2024 19:53 WG2225388 1,4-Dichlorobenzene 1.06 J 0.0942 10.0 1 02/15/2024 19:53 WG2225388 3,3-Dichlorobenzidine U 0.212 10.0 1 02/15/2024 19:53 WG2225388 2,4-Dinitrotoluene U 0.0983 10.0 1 02/15/2024 19:53 WG2225388 2,6-Dinitrotoluene U 0.250 10.0 1 02/15/2024 19:53 WG2225388 Fluoranthene 0.105 J 0.102 1.00 1 02/15/2024 19:53 WG2225388 Fluorene 0.177 J 0.0844 1.00 1 02/15/2024 19:53 WG2225388 Hexachlorobenzene U 0.0755 1.00 1 02/15/2024 19:53 WG2225388 Hexachloro-1,3-butadiene U 0.0968 10.0 1 02/15/2024 19:53 WG2225388 Hexachlorocyclopentadiene U 0.0598 10.0 1 02/15/2024 19:53 WG2225388 Hexachloroethane U 0.127 10.0 1 02/15/2024 19:53 WG2225388 Indeno(1,2,3-cd)pyrene U 0.279 1.00 1 02/15/2024 19:53 WG2225388 Isophorone U 0.143 10.0 1 02/15/2024 19:53 WG2225388 Naphthalene 5.15 0.159 1.00 1 02/15/2024 19:53 WG2225388 Nitrobenzene U 0.297 10.0 1 02/15/2024 19:53 WG2225388 n-Nitrosodimethylamine U 0.998 10.0 1 02/15/2024 19:53 WG2225388 n-Nitrosodiphenylamine U 2.37 10.0 1 02/15/2024 19:53 WG2225388 n-Nitrosodi-n-propylamine U 0.261 10.0 1 02/15/2024 19:53 WG2225388 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1704882 02/21/24 11:14 12 of 28 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1704882 02/26/24 10:07 12 of 28 SAMPLE RESULTS - 03 L1704882 MW-2 Collected date/time: 02/09/24 11:55 Semi Volatile Organic Compounds (GC/MS) by Method 8270E Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Phenanthrene 0.155 J 0.112 1.00 1 02/15/2024 19:53 WG2225388 Benzylbutyl phthalate U 0.765 3.00 1 02/15/2024 19:53 WG2225388 Bis(2-ethylhexyl)phthalate U 0.895 3.00 1 02/15/2024 19:53 WG2225388 Di-n-butyl phthalate U 0.453 3.00 1 02/15/2024 19:53 WG2225388 Diethyl phthalate 0.313 J 0.287 3.00 1 02/15/2024 19:53 WG2225388 Dimethyl phthalate U 0.260 3.00 1 02/15/2024 19:53 WG2225388 Di-n-octyl phthalate U 0.932 3.00 1 02/15/2024 19:53 WG2225388 Pyrene U 0.107 1.00 1 02/15/2024 19:53 WG2225388 1,2,4-Trichlorobenzene U 0.0698 10.0 1 02/15/2024 19:53 WG2225388 4-Chloro-3-methylphenol U J4 0.131 10.0 1 02/15/2024 19:53 WG2225388 2-Chlorophenol U 0.133 10.0 1 02/15/2024 19:53 WG2225388 2,4-Dichlorophenol U 0.102 10.0 1 02/15/2024 19:53 WG2225388 2,4-Dimethylphenol 1.09 J 0.0636 10.0 1 02/15/2024 19:53 WG2225388 4,6-Dinitro-2-methylphenol U 1.12 10.0 1 02/15/2024 19:53 WG2225388 2,4-Dinitrophenol U 5.93 10.0 1 02/15/2024 19:53 WG2225388 2-Nitrophenol U 0.117 10.0 1 02/15/2024 19:53 WG2225388 4-Nitrophenol U 0.143 10.0 1 02/15/2024 19:53 WG2225388 Pentachlorophenol U 0.313 10.0 1 02/15/2024 19:53 WG2225388 Phenol 11.7 4.33 10.0 1 02/15/2024 19:53 WG2225388 2,4,6-Trichlorophenol U 0.100 10.0 1 02/15/2024 19:53 WG2225388 (S) 2-Fluorophenol 0.000 J2 10.0-120 02/15/2024 19:53 WG2225388 (S) Phenol-d5 0.000 J2 10.0-120 02/15/2024 19:53 WG2225388 (S) Nitrobenzene-d5 74.4 10.0-127 02/15/2024 19:53 WG2225388 (S) 2-Fluorobiphenyl 55.6 10.0-130 02/15/2024 19:53 WG2225388 (S) 2,4,6-Tribromophenol 42.4 10.0-155 02/15/2024 19:53 WG2225388 (S) p-Terphenyl-d14 45.9 10.0-128 02/15/2024 19:53 WG2225388 Sample Narrative: L1704882-03 WG2225388: Surrogate failure due to matrix interference 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1704882 02/21/24 11:14 13 of 28 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1704882 02/26/24 10:07 13 of 28 SAMPLE RESULTS - 04 L1704882 MW-4 Collected date/time: 02/09/24 12:45 Volatile Organic Compounds (GC/MS) by Method 8260D Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Acetone 17.0 J 11.3 50.0 1 02/14/2024 16:55 WG2226299 Acrolein U J4 2.54 50.0 1 02/14/2024 16:55 WG2226299 Acrylonitrile U C3 0.671 10.0 1 02/14/2024 16:55 WG2226299 Benzene 17.1 0.0941 1.00 1 02/14/2024 16:55 WG2226299 Bromobenzene U 0.118 1.00 1 02/14/2024 16:55 WG2226299 Bromodichloromethane U 0.136 1.00 1 02/14/2024 16:55 WG2226299 Bromoform U 0.129 1.00 1 02/14/2024 16:55 WG2226299 Bromomethane U 0.605 5.00 1 02/14/2024 16:55 WG2226299 n-Butylbenzene U 0.157 1.00 1 02/14/2024 16:55 WG2226299 sec-Butylbenzene 0.410 J 0.125 1.00 1 02/14/2024 16:55 WG2226299 tert-Butylbenzene 0.219 J 0.127 1.00 1 02/14/2024 16:55 WG2226299 Carbon tetrachloride U 0.128 1.00 1 02/14/2024 16:55 WG2226299 Chlorobenzene U 0.116 1.00 1 02/14/2024 16:55 WG2226299 Chlorodibromomethane U 0.140 1.00 1 02/14/2024 16:55 WG2226299 Chloroethane U 0.192 5.00 1 02/14/2024 16:55 WG2226299 Chloroform U 0.111 5.00 1 02/14/2024 16:55 WG2226299 Chloromethane U C3 0.960 2.50 1 02/14/2024 16:55 WG2226299 2-Chlorotoluene U 0.106 1.00 1 02/14/2024 16:55 WG2226299 4-Chlorotoluene U 0.114 1.00 1 02/14/2024 16:55 WG2226299 1,2-Dibromo-3-Chloropropane U 0.276 5.00 1 02/14/2024 16:55 WG2226299 1,2-Dibromoethane U 0.126 1.00 1 02/14/2024 16:55 WG2226299 Dibromomethane U 0.122 1.00 1 02/14/2024 16:55 WG2226299 1,2-Dichlorobenzene U 0.107 1.00 1 02/14/2024 16:55 WG2226299 1,3-Dichlorobenzene U 0.110 1.00 1 02/14/2024 16:55 WG2226299 1,4-Dichlorobenzene U 0.120 1.00 1 02/14/2024 16:55 WG2226299 Dichlorodifluoromethane U 0.374 5.00 1 02/14/2024 16:55 WG2226299 1,1-Dichloroethane U 0.100 1.00 1 02/14/2024 16:55 WG2226299 1,2-Dichloroethane U 0.0819 1.00 1 02/14/2024 16:55 WG2226299 1,1-Dichloroethene 0.270 J 0.188 1.00 1 02/14/2024 16:55 WG2226299 cis-1,2-Dichloroethene 351 2.52 20.0 20 02/20/2024 02:20 WG2229263 trans-1,2-Dichloroethene 15.6 0.149 1.00 1 02/14/2024 16:55 WG2226299 1,2-Dichloropropane U C3 J4 0.149 1.00 1 02/14/2024 16:55 WG2226299 1,1-Dichloropropene U 0.142 1.00 1 02/14/2024 16:55 WG2226299 1,3-Dichloropropane U 0.110 1.00 1 02/14/2024 16:55 WG2226299 cis-1,3-Dichloropropene U 0.111 1.00 1 02/14/2024 16:55 WG2226299 trans-1,3-Dichloropropene U 0.118 1.00 1 02/14/2024 16:55 WG2226299 2,2-Dichloropropane U 0.161 1.00 1 02/14/2024 16:55 WG2226299 Di-isopropyl ether 0.244 C3 J 0.105 1.00 1 02/14/2024 16:55 WG2226299 Ethylbenzene 0.929 J 0.137 1.00 1 02/14/2024 16:55 WG2226299 Hexachloro-1,3-butadiene U 0.337 1.00 1 02/14/2024 16:55 WG2226299 Isopropylbenzene 0.431 J 0.105 1.00 1 02/14/2024 16:55 WG2226299 p-Isopropyltoluene 0.316 J 0.120 1.00 1 02/14/2024 16:55 WG2226299 2-Butanone (MEK)2.68 J 1.19 10.0 1 02/14/2024 16:55 WG2226299 Methylene Chloride U 0.430 5.00 1 02/14/2024 16:55 WG2226299 4-Methyl-2-pentanone (MIBK)U 0.478 10.0 1 02/14/2024 16:55 WG2226299 Methyl tert-butyl ether 1.37 0.101 1.00 1 02/14/2024 16:55 WG2226299 Naphthalene U 1.00 5.00 1 02/14/2024 16:55 WG2226299 n-Propylbenzene 0.362 J 0.0993 1.00 1 02/14/2024 16:55 WG2226299 Styrene U 0.118 1.00 1 02/14/2024 16:55 WG2226299 1,1,1,2-Tetrachloroethane U 0.147 1.00 1 02/14/2024 16:55 WG2226299 1,1,2,2-Tetrachloroethane U 0.133 1.00 1 02/14/2024 16:55 WG2226299 1,1,2-Trichlorotrifluoroethane U 0.180 1.00 1 02/14/2024 16:55 WG2226299 Tetrachloroethene 63.3 0.300 1.00 1 02/14/2024 16:55 WG2226299 Toluene 0.413 J 0.278 1.00 1 02/14/2024 16:55 WG2226299 1,2,3-Trichlorobenzene U 0.230 1.00 1 02/14/2024 16:55 WG2226299 1,2,4-Trichlorobenzene U 0.481 1.00 1 02/14/2024 16:55 WG2226299 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1704882 02/21/24 11:14 14 of 28 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1704882 02/26/24 10:07 14 of 28 SAMPLE RESULTS - 04 L1704882 MW-4 Collected date/time: 02/09/24 12:45 Volatile Organic Compounds (GC/MS) by Method 8260D Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time 1,1,1-Trichloroethane U 0.149 1.00 1 02/14/2024 16:55 WG2226299 1,1,2-Trichloroethane U 0.158 1.00 1 02/14/2024 16:55 WG2226299 Trichloroethene 52.6 0.190 1.00 1 02/14/2024 16:55 WG2226299 Trichlorofluoromethane U 0.160 5.00 1 02/14/2024 16:55 WG2226299 1,2,3-Trichloropropane U 0.237 2.50 1 02/14/2024 16:55 WG2226299 1,2,4-Trimethylbenzene 2.92 0.322 1.00 1 02/14/2024 16:55 WG2226299 1,2,3-Trimethylbenzene 1.21 0.104 1.00 1 02/14/2024 16:55 WG2226299 1,3,5-Trimethylbenzene 0.812 J 0.104 1.00 1 02/14/2024 16:55 WG2226299 Vinyl chloride 1.15 0.234 1.00 1 02/14/2024 16:55 WG2226299 Xylenes, Total 0.963 J 0.174 3.00 1 02/14/2024 16:55 WG2226299 (S) Toluene-d8 103 80.0-120 02/14/2024 16:55 WG2226299 (S) Toluene-d8 92.8 80.0-120 02/20/2024 02:20 WG2229263 (S) 4-Bromofluorobenzene 97.8 77.0-126 02/14/2024 16:55 WG2226299 (S) 4-Bromofluorobenzene 105 77.0-126 02/20/2024 02:20 WG2229263 (S) 1,2-Dichloroethane-d4 96.7 70.0-130 02/14/2024 16:55 WG2226299 (S) 1,2-Dichloroethane-d4 97.0 70.0-130 02/20/2024 02:20 WG2229263 Semi Volatile Organic Compounds (GC/MS) by Method 8270E Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Acenaphthene 0.0940 J 0.0930 1.05 1.05 02/15/2024 20:37 WG2225388 Acenaphthylene U 0.0967 1.05 1.05 02/15/2024 20:37 WG2225388 Anthracene U 0.0844 1.05 1.05 02/15/2024 20:37 WG2225388 Benzidine U J3 J4 3.93 10.5 1.05 02/15/2024 20:37 WG2225388 Benzo(a)anthracene U 0.209 1.05 1.05 02/15/2024 20:37 WG2225388 Benzo(b)fluoranthene U 0.136 1.05 1.05 02/15/2024 20:37 WG2225388 Benzo(k)fluoranthene U 0.126 1.05 1.05 02/15/2024 20:37 WG2225388 Benzo(g,h,i)perylene U 0.127 1.05 1.05 02/15/2024 20:37 WG2225388 Benzo(a)pyrene 0.0471 J 0.0400 1.05 1.05 02/15/2024 20:37 WG2225388 Bis(2-chlorethoxy)methane U 0.122 10.5 1.05 02/15/2024 20:37 WG2225388 Bis(2-chloroethyl)ether U 0.144 10.5 1.05 02/15/2024 20:37 WG2225388 2,2-Oxybis(1-Chloropropane)U 0.221 10.5 1.05 02/15/2024 20:37 WG2225388 4-Bromophenyl-phenylether U 0.0921 10.5 1.05 02/15/2024 20:37 WG2225388 2-Chloronaphthalene U 0.0680 1.05 1.05 02/15/2024 20:37 WG2225388 4-Chlorophenyl-phenylether U 0.0972 10.5 1.05 02/15/2024 20:37 WG2225388 Chrysene U 0.136 1.05 1.05 02/15/2024 20:37 WG2225388 Dibenz(a,h)anthracene 0.0819 B J 0.0676 1.05 1.05 02/15/2024 20:37 WG2225388 1,2-Dichlorobenzene U 0.0749 10.5 1.05 02/15/2024 20:37 WG2225388 1,3-Dichlorobenzene U 0.139 10.5 1.05 02/15/2024 20:37 WG2225388 1,4-Dichlorobenzene U 0.0989 10.5 1.05 02/15/2024 20:37 WG2225388 3,3-Dichlorobenzidine U 0.223 10.5 1.05 02/15/2024 20:37 WG2225388 2,4-Dinitrotoluene U 0.103 10.5 1.05 02/15/2024 20:37 WG2225388 2,6-Dinitrotoluene U 0.263 10.5 1.05 02/15/2024 20:37 WG2225388 Fluoranthene U 0.107 1.05 1.05 02/15/2024 20:37 WG2225388 Fluorene 0.146 J 0.0886 1.05 1.05 02/15/2024 20:37 WG2225388 Hexachlorobenzene U 0.0793 1.05 1.05 02/15/2024 20:37 WG2225388 Hexachloro-1,3-butadiene U 0.102 10.5 1.05 02/15/2024 20:37 WG2225388 Hexachlorocyclopentadiene U 0.0628 10.5 1.05 02/15/2024 20:37 WG2225388 Hexachloroethane U 0.133 10.5 1.05 02/15/2024 20:37 WG2225388 Indeno(1,2,3-cd)pyrene U 0.293 1.05 1.05 02/15/2024 20:37 WG2225388 Isophorone U 0.150 10.5 1.05 02/15/2024 20:37 WG2225388 Naphthalene 0.306 J 0.167 1.05 1.05 02/15/2024 20:37 WG2225388 Nitrobenzene U 0.312 10.5 1.05 02/15/2024 20:37 WG2225388 n-Nitrosodimethylamine U 1.05 10.5 1.05 02/15/2024 20:37 WG2225388 n-Nitrosodiphenylamine U 2.49 10.5 1.05 02/15/2024 20:37 WG2225388 n-Nitrosodi-n-propylamine U 0.274 10.5 1.05 02/15/2024 20:37 WG2225388 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1704882 02/21/24 11:14 15 of 28 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1704882 02/26/24 10:07 15 of 28 SAMPLE RESULTS - 04 L1704882 MW-4 Collected date/time: 02/09/24 12:45 Semi Volatile Organic Compounds (GC/MS) by Method 8270E Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Phenanthrene U 0.118 1.05 1.05 02/15/2024 20:37 WG2225388 Benzylbutyl phthalate U 0.803 3.15 1.05 02/15/2024 20:37 WG2225388 Bis(2-ethylhexyl)phthalate U 0.940 3.15 1.05 02/15/2024 20:37 WG2225388 Di-n-butyl phthalate U 0.476 3.15 1.05 02/15/2024 20:37 WG2225388 Diethyl phthalate U 0.301 3.15 1.05 02/15/2024 20:37 WG2225388 Dimethyl phthalate U 0.273 3.15 1.05 02/15/2024 20:37 WG2225388 Di-n-octyl phthalate U 0.979 3.15 1.05 02/15/2024 20:37 WG2225388 Pyrene U 0.112 1.05 1.05 02/15/2024 20:37 WG2225388 1,2,4-Trichlorobenzene U 0.0733 10.5 1.05 02/15/2024 20:37 WG2225388 4-Chloro-3-methylphenol U J4 0.138 10.5 1.05 02/15/2024 20:37 WG2225388 2-Chlorophenol U 0.140 10.5 1.05 02/15/2024 20:37 WG2225388 2,4-Dichlorophenol U 0.107 10.5 1.05 02/15/2024 20:37 WG2225388 2,4-Dimethylphenol U 0.0668 10.5 1.05 02/15/2024 20:37 WG2225388 4,6-Dinitro-2-methylphenol U 1.18 10.5 1.05 02/15/2024 20:37 WG2225388 2,4-Dinitrophenol U 6.23 10.5 1.05 02/15/2024 20:37 WG2225388 2-Nitrophenol U 0.123 10.5 1.05 02/15/2024 20:37 WG2225388 4-Nitrophenol U 0.150 10.5 1.05 02/15/2024 20:37 WG2225388 Pentachlorophenol U 0.329 10.5 1.05 02/15/2024 20:37 WG2225388 Phenol U 4.55 10.5 1.05 02/15/2024 20:37 WG2225388 2,4,6-Trichlorophenol U 0.105 10.5 1.05 02/15/2024 20:37 WG2225388 (S) 2-Fluorophenol 30.7 10.0-120 02/15/2024 20:37 WG2225388 (S) Phenol-d5 20.8 10.0-120 02/15/2024 20:37 WG2225388 (S) Nitrobenzene-d5 48.4 10.0-127 02/15/2024 20:37 WG2225388 (S) 2-Fluorobiphenyl 49.0 10.0-130 02/15/2024 20:37 WG2225388 (S) 2,4,6-Tribromophenol 57.1 10.0-155 02/15/2024 20:37 WG2225388 (S) p-Terphenyl-d14 56.3 10.0-128 02/15/2024 20:37 WG2225388 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1704882 02/21/24 11:14 16 of 28 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1704882 02/26/24 10:07 16 of 28 QUALITY CONTROL SUMMARYWG2226299 Volatile Organic Compounds (GC/MS) by Method 8260D L1704882-01,02,03,04 Method Blank (MB) (MB) R4035273-3 02/14/24 10:41 MB Result MB Qualifier MB MDL MB RDL Analyte ug/l ug/l ug/l Acetone U 11.3 50.0 Acrolein U 2.54 50.0 Acrylonitrile U 0.671 10.0 Benzene U 0.0941 1.00 Bromobenzene U 0.118 1.00 Bromodichloromethane U 0.136 1.00 Bromoform U 0.129 1.00 Bromomethane U 0.605 5.00 n-Butylbenzene U 0.157 1.00 sec-Butylbenzene U 0.125 1.00 tert-Butylbenzene U 0.127 1.00 Carbon tetrachloride U 0.128 1.00 Chlorobenzene U 0.116 1.00 Chlorodibromomethane U 0.140 1.00 Chloroethane U 0.192 5.00 Chloroform U 0.111 5.00 Chloromethane U 0.960 2.50 2-Chlorotoluene U 0.106 1.00 4-Chlorotoluene U 0.114 1.00 1,2-Dibromo-3-Chloropropane U 0.276 5.00 1,2-Dibromoethane U 0.126 1.00 Dibromomethane U 0.122 1.00 1,2-Dichlorobenzene U 0.107 1.00 1,3-Dichlorobenzene U 0.110 1.00 1,4-Dichlorobenzene U 0.120 1.00 Dichlorodifluoromethane U 0.374 5.00 1,1-Dichloroethane U 0.100 1.00 1,2-Dichloroethane U 0.0819 1.00 1,1-Dichloroethene U 0.188 1.00 cis-1,2-Dichloroethene U 0.126 1.00 trans-1,2-Dichloroethene U 0.149 1.00 1,2-Dichloropropane U 0.149 1.00 1,1-Dichloropropene U 0.142 1.00 1,3-Dichloropropane U 0.110 1.00 cis-1,3-Dichloropropene U 0.111 1.00 trans-1,3-Dichloropropene U 0.118 1.00 2,2-Dichloropropane U 0.161 1.00 Di-isopropyl ether U 0.105 1.00 Ethylbenzene U 0.137 1.00 Hexachloro-1,3-butadiene U 0.337 1.00 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1704882 02/21/24 11:14 17 of 28 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1704882 02/26/24 10:07 17 of 28 QUALITY CONTROL SUMMARYWG2226299 Volatile Organic Compounds (GC/MS) by Method 8260D L1704882-01,02,03,04 Method Blank (MB) (MB) R4035273-3 02/14/24 10:41 MB Result MB Qualifier MB MDL MB RDL Analyte ug/l ug/l ug/l Isopropylbenzene U 0.105 1.00 p-Isopropyltoluene U 0.120 1.00 2-Butanone (MEK)U 1.19 10.0 Methylene Chloride U 0.430 5.00 4-Methyl-2-pentanone (MIBK)U 0.478 10.0 Methyl tert-butyl ether U 0.101 1.00 Naphthalene U 1.00 5.00 n-Propylbenzene U 0.0993 1.00 Styrene U 0.118 1.00 1,1,1,2-Tetrachloroethane U 0.147 1.00 1,1,2,2-Tetrachloroethane U 0.133 1.00 1,1,2-Trichlorotrifluoroethane U 0.180 1.00 Tetrachloroethene U 0.300 1.00 Toluene U 0.278 1.00 1,2,3-Trichlorobenzene U 0.230 1.00 1,2,4-Trichlorobenzene U 0.481 1.00 1,1,1-Trichloroethane U 0.149 1.00 1,1,2-Trichloroethane U 0.158 1.00 Trichloroethene U 0.190 1.00 Trichlorofluoromethane U 0.160 5.00 1,2,3-Trichloropropane U 0.237 2.50 1,2,4-Trimethylbenzene U 0.322 1.00 1,2,3-Trimethylbenzene U 0.104 1.00 1,3,5-Trimethylbenzene U 0.104 1.00 Vinyl chloride U 0.234 1.00 Xylenes, Total U 0.174 3.00 (S) Toluene-d8 108 80.0-120 (S) 4-Bromofluorobenzene 94.9 77.0-126 (S) 1,2-Dichloroethane-d4 96.7 70.0-130 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R4035273-1 02/14/24 09:45 • (LCSD) R4035273-2 02/14/24 10:04 Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits Analyte ug/l ug/l ug/l %%%%% Acetone 25.0 27.9 23.4 112 93.6 19.0-160 17.5 27 Acrolein 25.0 402 420 1610 1680 10.0-160 J4 J4 4.38 26 Acrylonitrile 25.0 19.8 20.6 79.2 82.4 55.0-149 3.96 20 Benzene 5.00 4.76 4.62 95.2 92.4 70.0-123 2.99 20 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1704882 02/21/24 11:14 18 of 28 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1704882 02/26/24 10:07 18 of 28 QUALITY CONTROL SUMMARYWG2226299 Volatile Organic Compounds (GC/MS) by Method 8260D L1704882-01,02,03,04 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R4035273-1 02/14/24 09:45 • (LCSD) R4035273-2 02/14/24 10:04 Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits Analyte ug/l ug/l ug/l %%%%% Bromobenzene 5.00 4.50 4.47 90.0 89.4 73.0-121 0.669 20 Bromodichloromethane 5.00 4.85 4.73 97.0 94.6 75.0-120 2.51 20 Bromoform 5.00 4.91 4.62 98.2 92.4 68.0-132 6.09 20 Bromomethane 5.00 5.75 5.52 115 110 10.0-160 4.08 25 n-Butylbenzene 5.00 4.86 4.44 97.2 88.8 73.0-125 9.03 20 sec-Butylbenzene 5.00 4.65 4.57 93.0 91.4 75.0-125 1.74 20 tert-Butylbenzene 5.00 4.82 4.74 96.4 94.8 76.0-124 1.67 20 Carbon tetrachloride 5.00 5.12 4.85 102 97.0 68.0-126 5.42 20 Chlorobenzene 5.00 5.02 4.93 100 98.6 80.0-121 1.81 20 Chlorodibromomethane 5.00 5.02 5.06 100 101 77.0-125 0.794 20 Chloroethane 5.00 4.36 4.38 87.2 87.6 47.0-150 0.458 20 Chloroform 5.00 4.93 4.67 98.6 93.4 73.0-120 5.42 20 Chloromethane 5.00 3.66 3.29 73.2 65.8 41.0-142 10.6 20 2-Chlorotoluene 5.00 4.52 4.77 90.4 95.4 76.0-123 5.38 20 4-Chlorotoluene 5.00 4.67 4.65 93.4 93.0 75.0-122 0.429 20 1,2-Dibromo-3-Chloropropane 5.00 4.92 4.26 98.4 85.2 58.0-134 14.4 20 1,2-Dibromoethane 5.00 4.81 4.79 96.2 95.8 80.0-122 0.417 20 Dibromomethane 5.00 4.62 4.51 92.4 90.2 80.0-120 2.41 20 1,2-Dichlorobenzene 5.00 5.08 5.03 102 101 79.0-121 0.989 20 1,3-Dichlorobenzene 5.00 4.85 4.86 97.0 97.2 79.0-120 0.206 20 1,4-Dichlorobenzene 5.00 4.76 4.72 95.2 94.4 79.0-120 0.844 20 Dichlorodifluoromethane 5.00 4.60 4.42 92.0 88.4 51.0-149 3.99 20 1,1-Dichloroethane 5.00 4.44 4.20 88.8 84.0 70.0-126 5.56 20 1,2-Dichloroethane 5.00 4.49 4.48 89.8 89.6 70.0-128 0.223 20 1,1-Dichloroethene 5.00 4.91 4.70 98.2 94.0 71.0-124 4.37 20 cis-1,2-Dichloroethene 5.00 4.89 4.53 97.8 90.6 73.0-120 7.64 20 trans-1,2-Dichloroethene 5.00 4.95 4.55 99.0 91.0 73.0-120 8.42 20 1,2-Dichloropropane 5.00 3.96 3.66 79.2 73.2 77.0-125 J4 7.87 20 1,1-Dichloropropene 5.00 4.57 4.41 91.4 88.2 74.0-126 3.56 20 1,3-Dichloropropane 5.00 4.86 4.65 97.2 93.0 80.0-120 4.42 20 cis-1,3-Dichloropropene 5.00 4.72 4.50 94.4 90.0 80.0-123 4.77 20 trans-1,3-Dichloropropene 5.00 4.73 4.73 94.6 94.6 78.0-124 0.000 20 2,2-Dichloropropane 5.00 5.42 5.64 108 113 58.0-130 3.98 20 Di-isopropyl ether 5.00 3.82 3.78 76.4 75.6 58.0-138 1.05 20 Ethylbenzene 5.00 4.99 4.90 99.8 98.0 79.0-123 1.82 20 Hexachloro-1,3-butadiene 5.00 4.59 4.06 91.8 81.2 54.0-138 12.3 20 Isopropylbenzene 5.00 5.08 4.80 102 96.0 76.0-127 5.67 20 p-Isopropyltoluene 5.00 4.92 4.76 98.4 95.2 76.0-125 3.31 20 2-Butanone (MEK)25.0 21.2 20.2 84.8 80.8 44.0-160 4.83 20 Methylene Chloride 5.00 4.77 4.67 95.4 93.4 67.0-120 2.12 20 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1704882 02/21/24 11:14 19 of 28 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1704882 02/26/24 10:07 19 of 28 QUALITY CONTROL SUMMARYWG2226299 Volatile Organic Compounds (GC/MS) by Method 8260D L1704882-01,02,03,04 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R4035273-1 02/14/24 09:45 • (LCSD) R4035273-2 02/14/24 10:04 Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits Analyte ug/l ug/l ug/l %%%%% 4-Methyl-2-pentanone (MIBK)25.0 22.6 22.0 90.4 88.0 68.0-142 2.69 20 Methyl tert-butyl ether 5.00 4.75 4.57 95.0 91.4 68.0-125 3.86 20 Naphthalene 5.00 4.15 4.25 83.0 85.0 54.0-135 2.38 20 n-Propylbenzene 5.00 4.77 4.62 95.4 92.4 77.0-124 3.19 20 Styrene 5.00 4.41 4.34 88.2 86.8 73.0-130 1.60 20 1,1,1,2-Tetrachloroethane 5.00 5.10 4.97 102 99.4 75.0-125 2.58 20 1,1,2,2-Tetrachloroethane 5.00 4.93 5.19 98.6 104 65.0-130 5.14 20 1,1,2-Trichlorotrifluoroethane 5.00 4.99 4.94 99.8 98.8 69.0-132 1.01 20 Tetrachloroethene 5.00 5.07 4.80 101 96.0 72.0-132 5.47 20 Toluene 5.00 4.93 4.91 98.6 98.2 79.0-120 0.406 20 1,2,3-Trichlorobenzene 5.00 4.23 4.45 84.6 89.0 50.0-138 5.07 20 1,2,4-Trichlorobenzene 5.00 4.73 4.60 94.6 92.0 57.0-137 2.79 20 1,1,1-Trichloroethane 5.00 5.37 4.68 107 93.6 73.0-124 13.7 20 1,1,2-Trichloroethane 5.00 4.93 4.83 98.6 96.6 80.0-120 2.05 20 Trichloroethene 5.00 4.83 4.82 96.6 96.4 78.0-124 0.207 20 Trichlorofluoromethane 5.00 5.23 5.09 105 102 59.0-147 2.71 20 1,2,3-Trichloropropane 5.00 4.49 4.54 89.8 90.8 73.0-130 1.11 20 1,2,4-Trimethylbenzene 5.00 4.73 4.67 94.6 93.4 76.0-121 1.28 20 1,2,3-Trimethylbenzene 5.00 4.62 4.53 92.4 90.6 77.0-120 1.97 20 1,3,5-Trimethylbenzene 5.00 4.72 4.72 94.4 94.4 76.0-122 0.000 20 Vinyl chloride 5.00 4.19 4.19 83.8 83.8 67.0-131 0.000 20 Xylenes, Total 15.0 15.4 14.8 103 98.7 79.0-123 3.97 20 (S) Toluene-d8 105 107 80.0-120 (S) 4-Bromofluorobenzene 99.1 99.7 77.0-126 (S) 1,2-Dichloroethane-d4 95.2 95.3 70.0-130 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1704882 02/21/24 11:14 20 of 28 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1704882 02/26/24 10:07 20 of 28 QUALITY CONTROL SUMMARYWG2229263 Volatile Organic Compounds (GC/MS) by Method 8260D L1704882-01,02,03,04 Method Blank (MB) (MB) R4036326-3 02/19/24 18:50 MB Result MB Qualifier MB MDL MB RDL Analyte ug/l ug/l ug/l Benzene U 0.0941 1.00 cis-1,2-Dichloroethene U 0.126 1.00 Methyl tert-butyl ether U 0.101 1.00 (S) Toluene-d8 94.1 80.0-120 (S) 4-Bromofluorobenzene 104 77.0-126 (S) 1,2-Dichloroethane-d4 95.9 70.0-130 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R4036326-1 02/19/24 17:45 • (LCSD) R4036326-2 02/19/24 18:06 Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits Analyte ug/l ug/l ug/l %%%%% Benzene 5.00 4.56 4.59 91.2 91.8 70.0-123 0.656 20 cis-1,2-Dichloroethene 5.00 4.34 4.52 86.8 90.4 73.0-120 4.06 20 Methyl tert-butyl ether 5.00 4.34 4.28 86.8 85.6 68.0-125 1.39 20 (S) Toluene-d8 91.8 90.9 80.0-120 (S) 4-Bromofluorobenzene 101 102 77.0-126 (S) 1,2-Dichloroethane-d4 97.3 99.1 70.0-130 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1704882 02/21/24 11:14 21 of 28 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1704882 02/26/24 10:07 21 of 28 QUALITY CONTROL SUMMARYWG2225388 Semi Volatile Organic Compounds (GC/MS) by Method 8270E L1704882-01,02,03,04 Method Blank (MB) (MB) R4035204-3 02/15/24 13:19 MB Result MB Qualifier MB MDL MB RDL Analyte ug/l ug/l ug/l Acenaphthene U 0.0886 1.00 Acenaphthylene U 0.0921 1.00 Anthracene U 0.0804 1.00 Benzidine U 3.74 10.0 Benzo(a)anthracene U 0.199 1.00 Benzo(b)fluoranthene U 0.130 1.00 Benzo(k)fluoranthene U 0.120 1.00 Benzo(g,h,i)perylene U 0.121 1.00 Benzo(a)pyrene U 0.0381 1.00 Bis(2-chlorethoxy)methane U 0.116 10.0 Bis(2-chloroethyl)ether U 0.137 10.0 2,2-Oxybis(1-Chloropropane)U 0.210 10.0 4-Bromophenyl-phenylether U 0.0877 10.0 2-Chloronaphthalene U 0.0648 1.00 4-Chlorophenyl-phenylether U 0.0926 10.0 Chrysene U 0.130 1.00 Dibenz(a,h)anthracene 0.0651 J 0.0644 1.00 1,2-Dichlorobenzene U 0.0713 10.0 1,3-Dichlorobenzene U 0.132 10.0 1,4-Dichlorobenzene U 0.0942 10.0 3,3-Dichlorobenzidine U 0.212 10.0 2,4-Dinitrotoluene U 0.0983 10.0 2,6-Dinitrotoluene U 0.250 10.0 Fluoranthene U 0.102 1.00 Fluorene U 0.0844 1.00 Hexachlorobenzene U 0.0755 1.00 Hexachloro-1,3-butadiene U 0.0968 10.0 Hexachlorocyclopentadiene U 0.0598 10.0 Hexachloroethane U 0.127 10.0 Indeno(1,2,3-cd)pyrene U 0.279 1.00 Isophorone U 0.143 10.0 Naphthalene U 0.159 1.00 Nitrobenzene U 0.297 10.0 n-Nitrosodimethylamine U 0.998 10.0 n-Nitrosodiphenylamine U 2.37 10.0 n-Nitrosodi-n-propylamine U 0.261 10.0 Phenanthrene U 0.112 1.00 Benzylbutyl phthalate U 0.765 3.00 Bis(2-ethylhexyl)phthalate U 0.895 3.00 Di-n-butyl phthalate U 0.453 3.00 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1704882 02/21/24 11:14 22 of 28 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1704882 02/26/24 10:07 22 of 28 QUALITY CONTROL SUMMARYWG2225388 Semi Volatile Organic Compounds (GC/MS) by Method 8270E L1704882-01,02,03,04 Method Blank (MB) (MB) R4035204-3 02/15/24 13:19 MB Result MB Qualifier MB MDL MB RDL Analyte ug/l ug/l ug/l Diethyl phthalate U 0.287 3.00 Dimethyl phthalate U 0.260 3.00 Di-n-octyl phthalate U 0.932 3.00 Pyrene U 0.107 1.00 1,2,4-Trichlorobenzene U 0.0698 10.0 4-Chloro-3-methylphenol U 0.131 10.0 2-Chlorophenol U 0.133 10.0 2,4-Dichlorophenol U 0.102 10.0 2,4-Dimethylphenol U 0.0636 10.0 4,6-Dinitro-2-methylphenol U 1.12 10.0 2,4-Dinitrophenol U 5.93 10.0 2-Nitrophenol U 0.117 10.0 4-Nitrophenol U 0.143 10.0 Pentachlorophenol U 0.313 10.0 Phenol U 4.33 10.0 2,4,6-Trichlorophenol U 0.100 10.0 (S) 2-Fluorophenol 30.1 10.0-120 (S) Phenol-d5 19.1 10.0-120 (S) Nitrobenzene-d5 51.8 10.0-127 (S) 2-Fluorobiphenyl 53.7 10.0-130 (S) 2,4,6-Tribromophenol 47.3 10.0-155 (S) p-Terphenyl-d14 52.9 10.0-128 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R4035204-1 02/15/24 12:36 • (LCSD) R4035204-2 02/15/24 12:57 Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits Analyte ug/l ug/l ug/l %%%%% Acenaphthene 50.0 28.4 25.4 56.8 50.8 41.0-120 11.2 22 Acenaphthylene 50.0 30.6 27.1 61.2 54.2 43.0-120 12.1 22 Anthracene 50.0 30.0 27.4 60.0 54.8 45.0-120 9.06 20 Benzidine 100 3.82 17.0 3.82 17.0 10.0-120 J4 J3 127 36 Benzo(a)anthracene 50.0 29.1 27.8 58.2 55.6 47.0-120 4.57 20 Benzo(b)fluoranthene 50.0 29.1 28.2 58.2 56.4 46.0-120 3.14 20 Benzo(k)fluoranthene 50.0 28.7 27.5 57.4 55.0 46.0-120 4.27 21 Benzo(g,h,i)perylene 50.0 27.4 25.7 54.8 51.4 48.0-121 6.40 20 Benzo(a)pyrene 50.0 28.1 27.5 56.2 55.0 47.0-120 2.16 20 Bis(2-chlorethoxy)methane 50.0 26.7 24.2 53.4 48.4 33.0-120 9.82 24 Bis(2-chloroethyl)ether 50.0 30.6 28.2 61.2 56.4 23.0-120 8.16 33 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1704882 02/21/24 11:14 23 of 28 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1704882 02/26/24 10:07 23 of 28 QUALITY CONTROL SUMMARYWG2225388 Semi Volatile Organic Compounds (GC/MS) by Method 8270E L1704882-01,02,03,04 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R4035204-1 02/15/24 12:36 • (LCSD) R4035204-2 02/15/24 12:57 Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits Analyte ug/l ug/l ug/l %%%%% 2,2-Oxybis(1-Chloropropane)50.0 27.9 25.4 55.8 50.8 28.0-120 9.38 31 4-Bromophenyl-phenylether 50.0 29.5 26.3 59.0 52.6 45.0-120 11.5 20 2-Chloronaphthalene 50.0 27.9 24.6 55.8 49.2 37.0-120 12.6 25 4-Chlorophenyl-phenylether 50.0 29.1 26.1 58.2 52.2 44.0-120 10.9 20 Chrysene 50.0 27.8 26.7 55.6 53.4 48.0-120 4.04 20 Dibenz(a,h)anthracene 50.0 28.1 26.8 56.2 53.6 47.0-120 4.74 20 1,2-Dichlorobenzene 50.0 27.1 24.9 54.2 49.8 20.0-120 8.46 34 1,3-Dichlorobenzene 50.0 27.7 24.9 55.4 49.8 17.0-120 10.6 35 1,4-Dichlorobenzene 50.0 28.9 26.5 57.8 53.0 18.0-120 8.66 34 3,3-Dichlorobenzidine 100 63.5 62.2 63.5 62.2 44.0-120 2.07 20 2,4-Dinitrotoluene 50.0 35.9 32.8 71.8 65.6 49.0-124 9.02 20 2,6-Dinitrotoluene 50.0 32.7 29.3 65.4 58.6 46.0-120 11.0 21 Fluoranthene 50.0 32.4 29.8 64.8 59.6 51.0-120 8.36 20 Fluorene 50.0 29.9 26.5 59.8 53.0 47.0-120 12.1 20 Hexachlorobenzene 50.0 28.3 25.8 56.6 51.6 44.0-120 9.24 20 Hexachloro-1,3-butadiene 50.0 21.2 19.5 42.4 39.0 19.0-120 8.35 32 Hexachlorocyclopentadiene 50.0 10.6 9.72 21.2 19.4 15.0-120 8.66 31 Hexachloroethane 50.0 26.4 24.5 52.8 49.0 15.0-120 7.47 37 Indeno(1,2,3-cd)pyrene 50.0 29.1 27.6 58.2 55.2 49.0-122 5.29 20 Isophorone 50.0 26.3 24.1 52.6 48.2 36.0-120 8.73 23 Naphthalene 50.0 27.2 24.3 54.4 48.6 27.0-120 11.3 27 Nitrobenzene 50.0 26.0 23.2 52.0 46.4 27.0-120 11.4 29 n-Nitrosodimethylamine 50.0 18.0 16.7 36.0 33.4 10.0-120 7.49 40 n-Nitrosodiphenylamine 50.0 30.7 26.7 61.4 53.4 47.0-120 13.9 20 n-Nitrosodi-n-propylamine 50.0 28.6 26.0 57.2 52.0 31.0-120 9.52 28 Phenanthrene 50.0 29.4 26.2 58.8 52.4 46.0-120 11.5 20 Benzylbutyl phthalate 50.0 31.7 30.8 63.4 61.6 43.0-121 2.88 20 Bis(2-ethylhexyl)phthalate 50.0 31.8 31.8 63.6 63.6 43.0-122 0.000 20 Di-n-butyl phthalate 50.0 33.2 31.4 66.4 62.8 49.0-121 5.57 20 Diethyl phthalate 50.0 31.4 29.3 62.8 58.6 48.0-122 6.92 20 Dimethyl phthalate 50.0 31.4 29.1 62.8 58.2 48.0-120 7.60 20 Di-n-octyl phthalate 50.0 30.5 30.8 61.0 61.6 42.0-125 0.979 20 Pyrene 50.0 27.5 25.7 55.0 51.4 47.0-120 6.77 20 1,2,4-Trichlorobenzene 50.0 25.1 22.4 50.2 44.8 24.0-120 11.4 29 4-Chloro-3-methylphenol 50.0 19.3 20.2 38.6 40.4 40.0-120 J4 4.56 21 2-Chlorophenol 50.0 19.2 19.6 38.4 39.2 25.0-120 2.06 35 2,4-Dichlorophenol 50.0 20.9 21.9 41.8 43.8 36.0-120 4.67 26 2,4-Dimethylphenol 50.0 17.0 17.2 34.0 34.4 33.0-120 1.17 26 4,6-Dinitro-2-methylphenol 50.0 35.0 35.2 70.0 70.4 38.0-138 0.570 25 2,4-Dinitrophenol 50.0 29.5 30.2 59.0 60.4 10.0-120 2.35 39 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1704882 02/21/24 11:14 24 of 28 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1704882 02/26/24 10:07 24 of 28 QUALITY CONTROL SUMMARYWG2225388 Semi Volatile Organic Compounds (GC/MS) by Method 8270E L1704882-01,02,03,04 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R4035204-1 02/15/24 12:36 • (LCSD) R4035204-2 02/15/24 12:57 Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits Analyte ug/l ug/l ug/l %%%%% 2-Nitrophenol 50.0 24.0 24.9 48.0 49.8 31.0-120 3.68 29 4-Nitrophenol 50.0 12.8 11.9 25.6 23.8 10.0-120 7.29 33 Pentachlorophenol 50.0 24.5 23.2 49.0 46.4 23.0-120 5.45 25 Phenol 50.0 10.7 10.1 21.4 20.2 10.0-120 5.77 36 2,4,6-Trichlorophenol 50.0 24.3 24.5 48.6 49.0 42.0-120 0.820 23 (S) 2-Fluorophenol 30.4 29.3 10.0-120 (S) Phenol-d5 21.3 19.7 10.0-120 (S) Nitrobenzene-d5 46.2 39.8 10.0-127 (S) 2-Fluorobiphenyl 58.0 49.5 10.0-130 (S) 2,4,6-Tribromophenol 53.0 52.0 10.0-155 (S) p-Terphenyl-d14 56.0 53.2 10.0-128 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1704882 02/21/24 11:14 25 of 28 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1704882 02/26/24 10:07 25 of 28 GLOSSARY OF TERMS Guide to Reading and Understanding Your Laboratory Report The information below is designed to better explain the various terms used in your report of analytical results from the Laboratory. This is not intended as a comprehensive explanation, and if you have additional questions please contact your project representative. Results Disclaimer - Information that may be provided by the customer, and contained within this report, include Permit Limits, Project Name, Sample ID, Sample Matrix, Sample Preservation, Field Blanks, Field Spikes, Field Duplicates, On-Site Data, Sampling Collection Dates/Times, and Sampling Location. Results relate to the accuracy of this information provided, and as the samples are received. Abbreviations and Definitions MDL Method Detection Limit. RDL Reported Detection Limit. Rec.Recovery. RPD Relative Percent Difference. SDG Sample Delivery Group. (S)Surrogate (Surrogate Standard) - Analytes added to every blank, sample, Laboratory Control Sample/Duplicate and Matrix Spike/Duplicate; used to evaluate analytical efficiency by measuring recovery. Surrogates are not expected to be detected in all environmental media. U Not detected at the Reporting Limit (or MDL where applicable). Analyte The name of the particular compound or analysis performed. Some Analyses and Methods will have multiple analytes reported. Dilution If the sample matrix contains an interfering material, the sample preparation volume or weight values differ from the standard, or if concentrations of analytes in the sample are higher than the highest limit of concentration that the laboratory can accurately report, the sample may be diluted for analysis. If a value different than 1 is used in this field, the result reported has already been corrected for this factor. Limits These are the target % recovery ranges or % difference value that the laboratory has historically determined as normal for the method and analyte being reported. Successful QC Sample analysis will target all analytes recovered or duplicated within these ranges. Qualifier This column provides a letter and/or number designation that corresponds to additional information concerning the result reported. If a Qualifier is present, a definition per Qualifier is provided within the Glossary and Definitions page and potentially a discussion of possible implications of the Qualifier in the Case Narrative if applicable. Result The actual analytical final result (corrected for any sample specific characteristics) reported for your sample. If there was no measurable result returned for a specific analyte, the result in this column may state “ND” (Not Detected) or “BDL” (Below Detectable Levels). The information in the results column should always be accompanied by either an MDL (Method Detection Limit) or RDL (Reporting Detection Limit) that defines the lowest value that the laboratory could detect or report for this analyte. Uncertainty (Radiochemistry)Confidence level of 2 sigma. Case Narrative (Cn) A brief discussion about the included sample results, including a discussion of any non-conformances to protocol observed either at sample receipt by the laboratory from the field or during the analytical process. If present, there will be a section in the Case Narrative to discuss the meaning of any data qualifiers used in the report. Quality Control Summary (Qc) This section of the report includes the results of the laboratory quality control analyses required by procedure or analytical methods to assist in evaluating the validity of the results reported for your samples. These analyses are not being performed on your samples typically, but on laboratory generated material. Sample Chain of Custody (Sc) This is the document created in the field when your samples were initially collected. This is used to verify the time and date of collection, the person collecting the samples, and the analyses that the laboratory is requested to perform. This chain of custody also documents all persons (excluding commercial shippers) that have had control or possession of the samples from the time of collection until delivery to the laboratory for analysis. Sample Results (Sr) This section of your report will provide the results of all testing performed on your samples. These results are provided by sample ID and are separated by the analyses performed on each sample. The header line of each analysis section for each sample will provide the name and method number for the analysis reported. Sample Summary (Ss)This section of the Analytical Report defines the specific analyses performed for each sample ID, including the dates and times of preparation and/or analysis. Qualifier Description B The same analyte is found in the associated blank. C3 The reported concentration is an estimate. The continuing calibration standard associated with this data responded low. Method sensitivity check is acceptable. J The identification of the analyte is acceptable; the reported value is an estimate. J2 Surrogate recovery limits have been exceeded; values are outside lower control limits. J3 The associated batch QC was outside the established quality control range for precision. J4 The associated batch QC was outside the established quality control range for accuracy. 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1704882 02/21/24 11:14 26 of 28 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1704882 02/26/24 10:07 26 of 28 Pace Analytical National 12065 Lebanon Rd Mount Juliet, TN 37122 Alabama 40660 Nebraska NE-OS-15-05 Alaska 17-026 Nevada TN000032021-1 Arizona AZ0612 New Hampshire 2975 Arkansas 88-0469 New Jersey–NELAP TN002 California 2932 New Mexico ¹TN00003 Colorado TN00003 New York 11742 Connecticut PH-0197 North Carolina Env375 Florida E87487 North Carolina ¹DW21704 Georgia NELAP North Carolina ³41 Georgia ¹923 North Dakota R-140 Idaho TN00003 Ohio–VAP CL0069 Illinois 200008 Oklahoma 9915 Indiana C-TN-01 Oregon TN200002 Iowa 364 Pennsylvania 68-02979 Kansas E-10277 Rhode Island LAO00356 Kentucky ¹ ⁶KY90010 South Carolina 84004002 Kentucky ²16 South Dakota n/a Louisiana AI30792 Tennessee ¹ ⁴2006 Louisiana LA018 Texas T104704245-20-18 Maine TN00003 Texas ⁵LAB0152 Maryland 324 Utah TN000032021-11 Massachusetts M-TN003 Vermont VT2006 Michigan 9958 Virginia 110033 Minnesota 047-999-395 Washington C847 Mississippi TN00003 West Virginia 233 Missouri 340 Wisconsin 998093910 Montana CERT0086 Wyoming A2LA A2LA – ISO 17025 1461.01 AIHA-LAP,LLC EMLAP 100789 A2LA – ISO 17025 ⁵1461.02 DOD 1461.01 Canada 1461.01 USDA P330-15-00234 EPA–Crypto TN00003 ACCREDITATIONS & LOCATIONS ¹ Drinking Water ² Underground Storage Tanks ³ Aquatic Toxicity ⁴ Chemical/Microbiological ⁵ Mold ⁶ Wastewater n/a Accreditation not applicable * Not all certifications held by the laboratory are applicable to the results reported in the attached report. * Accreditation is only applicable to the test methods specified on each scope of accreditation held by Pace Analytical. 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1704882 02/21/24 11:14 27 of 28 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: AECOM - Raleigh, NC 60722767 L1704882 02/26/24 10:07 27 of 28 AECOM - Morrisville 1600 Perimeter Park Dr. Morrisville, NC 27560 Frye & Webster – DC410064 Client Project# 60722767 Analytical Report (0124-075) EPA Method TO-15 TO-15 Target Compund List Enthalpy Analytical, LLC Phone: (919) 850 - 4392 / Fax: (919) 850 - 9012 / www.enthalpy.com 800-1 Capitola Drive Durham, NC 27713-4385 I certify that to the best of my knowledge all analytical data presented in this report: Have been checked for completeness Are accurate, error-free, and legible Have been conducted in accordance with approved protocol, and that all deviations and analytical problems are summarized in the appropriate narrative(s) This analytical report was prepared in Portable Document Format (.PDF). This report shall not be reproduced except in full without approval of the laboratory. This will provide assurance that parts of a report are not taken out of context. Report Issued: 2/15/24 EA # 0124-075 Page 2 of 85 Results EA # 0124-075 Page 3 of 85 Sample Name Sample Info. Sampling Date Received Date Sample Type Batch Data File Dilution Pressurization Factor Acquisition Date Instrument Method Matrix Analyst Instrument Enthalpy ID Target Compound Concentration (ppbv) RL (ppbv) MDL (ppbv) Concentration (ug/m³) RL (ug/m³) MDL (ug/m³) Flags Propylene 4.20 0.0894 0.0810 7.22 0.154 0.139 m Freon 12 (CCl2F2)0.493 0.0906 0.0810 2.44 0.448 0.400 Freon 114 (C2Cl2F4)ND 0.0928 0.0810 ND 0.648 0.566 Chloromethane 0.373 0.0916 0.0810 0.770 0.189 0.167 Chloroethene (Vinyl chloride)ND 0.0925 0.0810 ND 0.236 0.207 1,3-Butadiene 0.325 0.0901 0.0810 0.718 0.199 0.179 Bromomethane ND 0.0908 0.0810 ND 0.352 0.314 Chloroethane ND 0.0941 0.0810 ND 0.248 0.214 Bromoethene (Vinyl bromide)ND 0.0905 0.0810 ND 0.396 0.354 Freon 11 (CCl3F)0.236 0.0977 0.0810 1.32 0.548 0.455 Ethanol 3.50 0.0917 0.0917 6.59 0.173 0.173 Acrolein 0.350 0.0912 0.0810 0.803 0.209 0.186 m Freon 113 (C2Cl3F3)ND 0.0940 0.0810 ND 0.720 0.620 1,1-Dichloroethene ND 0.0931 0.0810 ND 0.369 0.321 Acetone 35.8 0.0928 0.0810 84.9 0.220 0.192 Carbon disulfide 0.500 0.0923 0.0810 1.55 0.287 0.252 Isopropyl alcohol 1.94 0.0923 0.0810 4.77 0.227 0.199 Allyl chloride (3-chloropropene)ND 0.1000 0.0810 ND 0.313 0.253 Acetonitrile ND 0.0923 0.0810 ND 0.155 0.136 Methylene chloride 0.192 0.0948 0.0810 0.665 0.329 0.281 trans-1,2-Dichloroethene 0.506 0.0944 0.0810 2.01 0.374 0.321 Methyl tert-butyl ether ND 0.0952 0.0810 ND 0.343 0.292 Acrylonitrile ND 0.0942 0.0810 ND 0.204 0.176 Hexane 0.710 0.0941 0.0810 2.50 0.331 0.285 1,1-Dichloroethane ND 0.0919 0.0810 ND 0.372 0.328 Vinyl acetate ND 0.0947 0.0810 ND 0.333 0.285 cis-1,2-Dichloroethene 3.64 0.0935 0.0810 14.4 0.371 0.321 Methyl ethyl ketone (2-Butanone)6.34 0.0957 0.0810 18.7 0.282 0.239 m Ethyl acetate 1.15 0.0924 0.0810 4.13 0.333 0.292 Chloroform 1.08 0.0929 0.0810 5.25 0.453 0.395 Tetrahydrofuran 2.43 0.0937 0.0810 7.17 0.276 0.239 Air KMB Xavier 0124-075.SG-5.Can X2400589.D 1.000 2.315 2024-02-01 16:22 TO15_SCNV6.M 0124-075; 500mL Load; Can #12165 2024-01-29 17:02 2024-02-01 00:00 Sample Xavier_X020124A_0124-075.v1 Enthalpy Analytical Job No.: 0124-075-1 EPA Method TO-15 Analysis -- Run AECOM - Morrisville 60722767 Frye & Webster DC410064 SG-5 EA # 0124-075 Page 4 of 85 Sample Name Sample Info. Sampling Date Received Date Sample Type Batch Data File Dilution Pressurization Factor Acquisition Date Instrument Method Matrix Analyst Instrument Enthalpy ID Target Compound Concentration (ppbv) RL (ppbv) MDL (ppbv) Concentration (ug/m³) RL (ug/m³) MDL (ug/m³) Flags Air KMB Xavier 0124-075.SG-5.Can X2400589.D 1.000 2.315 2024-02-01 16:22 TO15_SCNV6.M 0124-075; 500mL Load; Can #12165 2024-01-29 17:02 2024-02-01 00:00 Sample Xavier_X020124A_0124-075.v1 Enthalpy Analytical Job No.: 0124-075-1 EPA Method TO-15 Analysis -- Run AECOM - Morrisville 60722767 Frye & Webster DC410064 SG-5 1,1,1-Trichloroethane ND 0.0935 0.0810 ND 0.510 0.442 Cyclohexane 0.424 0.0949 0.0810 1.46 0.326 0.279 Carbon tetrachloride 0.0812 0.0932 0.0810 0.510 0.586 0.509 J Benzene 0.379 0.0931 0.0810 1.21 0.297 0.259 2,2,4-trimethylpentane 0.703 0.0957 0.0810 3.28 0.447 0.378 1,2-Dichloroethane ND 0.0953 0.0810 ND 0.385 0.328 Heptane 0.435 0.0938 0.0810 1.78 0.384 0.332 Trichloroethene 24.4 0.0936 0.0810 131 0.503 0.435 1,2-Dichloropropane ND 0.0932 0.0810 ND 0.431 0.374 Methyl methacrylate 0.0946 0.0969 0.0810 0.387 0.397 0.332 J, m 1,4-Dioxane 0.370 0.0929 0.0810 1.33 0.334 0.292 Bromodichloromethane ND 0.0935 0.0810 ND 0.626 0.542 cis-1,3-Dichloropropene ND 0.0919 0.0810 ND 0.417 0.367 Methyl isobutyl ketone 7.51 0.0962 0.0810 30.7 0.394 0.332 Toluene 4.18 0.0942 0.0810 15.7 0.355 0.305 trans-1,3-Dichloropropene ND 0.0955 0.0810 ND 0.433 0.367 1,1,2-Trichloroethane 0.101 0.0942 0.0810 0.553 0.513 0.442 2-Hexanone (Methyl butyl ketone)24.1 0.0947 0.0810 98.7 0.388 0.332 m Dibromochloromethane ND 0.0933 0.0810 ND 0.794 0.690 1,2-Dibromoethane ND 0.0947 0.0810 ND 0.727 0.622 Chlorobenzene ND 0.0954 0.0810 ND 0.439 0.373 Ethylbenzene 1.04 0.0919 0.0810 4.50 0.399 0.352 1,1,1,2-Tetrachloroethane ND 0.0933 0.0810 ND 0.640 0.556 m-/p-Xylenes 4.18 0.0939 0.0810 18.1 0.407 0.352 o-Xylene 1.55 0.0928 0.0810 6.73 0.403 0.352 Styrene 0.104 0.0907 0.0810 0.444 0.386 0.345 Bromoform ND 0.0929 0.0810 ND 0.959 0.837 1,1,2,2-Tetrachloroethane 0.113 0.0936 0.0810 0.775 0.642 0.556 4-Ethyltoluene 0.747 0.0942 0.0810 3.67 0.463 0.398 m 2-Chlorotoluene 0.108 0.0934 0.0810 0.560 0.483 0.419 m 1,3,5-Trimethylbenzene 0.796 0.0939 0.0810 3.91 0.461 0.398 EA # 0124-075 Page 5 of 85 Sample Name Sample Info. Sampling Date Received Date Sample Type Batch Data File Dilution Pressurization Factor Acquisition Date Instrument Method Matrix Analyst Instrument Enthalpy ID Target Compound Concentration (ppbv) RL (ppbv) MDL (ppbv) Concentration (ug/m³) RL (ug/m³) MDL (ug/m³) Flags Air KMB Xavier 0124-075.SG-5.Can X2400589.D 1.000 2.315 2024-02-01 16:22 TO15_SCNV6.M 0124-075; 500mL Load; Can #12165 2024-01-29 17:02 2024-02-01 00:00 Sample Xavier_X020124A_0124-075.v1 Enthalpy Analytical Job No.: 0124-075-1 EPA Method TO-15 Analysis -- Run AECOM - Morrisville 60722767 Frye & Webster DC410064 SG-5 1,2,4-Trimethylbenzene 3.07 0.0927 0.0810 15.1 0.455 0.398 m 1,3-Dichlorobenzene ND 0.0941 0.0810 ND 0.565 0.487 1,4-Dichlorobenzene ND 0.0930 0.0810 ND 0.559 0.487 Benzyl chloride ND 0.0931 0.0810 ND 0.482 0.419 1,2-Dichlorobenzene ND 0.0938 0.0810 ND 0.564 0.487 1,2,4-Trichlorobenzene ND 0.0922 0.0810 ND 0.684 0.601 Hexachlorobutadiene ND 0.0915 0.0810 ND 0.975 0.863 Naphthalene 0.162 0.0932 0.0810 0.850 0.488 0.424 m 1-Bromopropane ND 0.0918 0.0810 ND 0.462 0.407 1-Octene 0.380 0.0914 0.0810 1.74 0.419 0.372 n-Octane 0.703 0.0954 0.0810 3.28 0.445 0.378 Isopropylbenzene 0.250 0.0941 0.0810 1.23 0.462 0.398 n-Propylbenzene 0.528 0.0950 0.0810 2.59 0.467 0.398 Compound Response Retention Time (min) Concentration (ppbv) Flag Bromochloromethane (IS)894,652 11.02 5.21 pass 1,4-Difluorobenzene (IS)3,401,139 12.44 5.16 pass Chlorobenzene-d5 (IS)2,986,829 16.57 4.92 pass (ND) = Not Detected (J) = Below Calibration Range, (E) = Above Calibration Range, (m) = Manual Integration IS Acceptance Criteria: RT +/- 20 sec, Response +/- 40% EA # 0124-075 Page 6 of 85 Sample Name Sample Info. Sampling Date Received Date Sample Type Batch Data File Dilution Pressurization Factor Acquisition Date Instrument Method Matrix Analyst Instrument Enthalpy ID Target Compound Concentration (ppbv) RL (ppbv) MDL (ppbv) Concentration (ug/m³) RL (ug/m³) MDL (ug/m³) Flags Tetrachloroethene 460 4.74 4.05 3,117 32.1 27.5 Compound Response Retention Time (min) Concentration (ppbv) Flag Bromochloromethane (IS)789,096 11.02 5.21 pass (ND) = Not Detected (J) = Below Calibration Range, (E) = Above Calibration Range, (m) = Manual Integration IS Acceptance Criteria: RT +/- 20 sec, Response +/- 40% Air TDD Xavier 0124-075.SG-5.Can X2400666.D 50.000 2.315 2024-02-06 08:31 TO15_SCNV6.M 0124-075; *50=10mL Load; Can #12165 2024-01-29 17:02 2024-02-01 00:00 Sample Xavier_X020524A_0124-075.v1 Enthalpy Analytical Job No.: 0124-075-1 EPA Method TO-15 Analysis -- Run AECOM - Morrisville 60722767 Frye & Webster DC410064 SG-5 EA # 0124-075 Page 7 of 85 Sample Name Sample Info. Sampling Date Received Date Sample Type Batch Data File Dilution Pressurization Factor Acquisition Date Instrument Method Matrix Analyst Instrument Enthalpy ID Target Compound Concentration (ppbv) RL (ppbv) MDL (ppbv) Concentration (ug/m³) RL (ug/m³) MDL (ug/m³) Flags Propylene 2.92 0.0956 0.0866 5.02 0.164 0.149 Freon 12 (CCl2F2)0.479 0.0969 0.0866 2.37 0.479 0.428 m Freon 114 (C2Cl2F4)ND 0.0992 0.0866 ND 0.693 0.605 Chloromethane ND 0.0979 0.0866 ND 0.202 0.179 Chloroethene (Vinyl chloride)ND 0.0989 0.0866 ND 0.253 0.221 1,3-Butadiene ND 0.0963 0.0866 ND 0.213 0.191 Bromomethane ND 0.0971 0.0866 ND 0.377 0.336 Chloroethane ND 0.101 0.0866 ND 0.265 0.228 Bromoethene (Vinyl bromide)ND 0.0968 0.0866 ND 0.423 0.379 Freon 11 (CCl3F)0.195 0.104 0.0866 1.10 0.586 0.486 Ethanol 0.797 0.0981 0.0981 1.50 0.185 0.185 m Acrolein ND 0.0975 0.0866 ND 0.223 0.198 Freon 113 (C2Cl3F3)ND 0.100 0.0866 ND 0.769 0.663 1,1-Dichloroethene 0.194 0.0996 0.0866 0.769 0.394 0.343 Acetone 10.0 0.0992 0.0866 23.8 0.235 0.206 Carbon disulfide 0.963 0.0987 0.0866 3.00 0.307 0.269 Isopropyl alcohol 0.227 0.0987 0.0866 0.558 0.242 0.213 m Allyl chloride (3-chloropropene)ND 0.107 0.0866 ND 0.334 0.271 Acetonitrile 0.106 0.0987 0.0866 0.178 0.166 0.145 Methylene chloride 0.241 0.101 0.0866 0.838 0.352 0.301 trans-1,2-Dichloroethene 0.316 0.101 0.0866 1.25 0.400 0.343 Methyl tert-butyl ether ND 0.102 0.0866 ND 0.367 0.312 Acrylonitrile ND 0.101 0.0866 ND 0.219 0.188 Hexane 0.469 0.101 0.0866 1.65 0.354 0.305 m 1,1-Dichloroethane ND 0.0983 0.0866 ND 0.398 0.350 Vinyl acetate ND 0.101 0.0866 ND 0.356 0.305 cis-1,2-Dichloroethene 4.03 0.1000 0.0866 16.0 0.396 0.343 Methyl ethyl ketone (2-Butanone)2.05 0.102 0.0866 6.03 0.302 0.255 Ethyl acetate ND 0.0988 0.0866 ND 0.356 0.312 Chloroform 0.205 0.0993 0.0866 0.999 0.484 0.423 Tetrahydrofuran 0.497 0.100 0.0866 1.46 0.295 0.255 Air KMB Xavier 0124-075.SG-3.Can X2400590.D 1.000 2.474 2024-02-01 17:17 TO15_SCNV6.M 0124-075; 500mL Load; Can #6041/C10125 2024-01-31 12:31 2024-02-01 00:00 Sample Xavier_X020124A_0124-075.v1 Enthalpy Analytical Job No.: 0124-075-1 EPA Method TO-15 Analysis -- Run AECOM - Morrisville 60722767 Frye & Webster DC410064 SG-3 EA # 0124-075 Page 8 of 85 Sample Name Sample Info. Sampling Date Received Date Sample Type Batch Data File Dilution Pressurization Factor Acquisition Date Instrument Method Matrix Analyst Instrument Enthalpy ID Target Compound Concentration (ppbv) RL (ppbv) MDL (ppbv) Concentration (ug/m³) RL (ug/m³) MDL (ug/m³) Flags Air KMB Xavier 0124-075.SG-3.Can X2400590.D 1.000 2.474 2024-02-01 17:17 TO15_SCNV6.M 0124-075; 500mL Load; Can #6041/C10125 2024-01-31 12:31 2024-02-01 00:00 Sample Xavier_X020124A_0124-075.v1 Enthalpy Analytical Job No.: 0124-075-1 EPA Method TO-15 Analysis -- Run AECOM - Morrisville 60722767 Frye & Webster DC410064 SG-3 1,1,1-Trichloroethane 2.87 0.1000 0.0866 15.6 0.545 0.472 Cyclohexane 0.498 0.101 0.0866 1.71 0.349 0.298 Carbon tetrachloride ND 0.0997 0.0866 ND 0.627 0.544 Benzene 0.235 0.0996 0.0866 0.751 0.318 0.276 2,2,4-trimethylpentane ND 0.102 0.0866 ND 0.478 0.404 1,2-Dichloroethane ND 0.102 0.0866 ND 0.412 0.350 Heptane 0.348 0.100 0.0866 1.43 0.411 0.355 Trichloroethene 20.3 0.100 0.0866 109 0.537 0.465 1,2-Dichloropropane ND 0.0997 0.0866 ND 0.460 0.400 Methyl methacrylate ND 0.104 0.0866 ND 0.424 0.354 1,4-Dioxane ND 0.0993 0.0866 ND 0.357 0.312 Bromodichloromethane ND 0.1000 0.0866 ND 0.669 0.580 cis-1,3-Dichloropropene ND 0.0983 0.0866 ND 0.446 0.393 Methyl isobutyl ketone 1.39 0.103 0.0866 5.67 0.421 0.355 Toluene 1.94 0.101 0.0866 7.29 0.379 0.326 trans-1,3-Dichloropropene ND 0.102 0.0866 ND 0.463 0.393 1,1,2-Trichloroethane ND 0.101 0.0866 ND 0.549 0.472 2-Hexanone (Methyl butyl ketone)3.92 0.101 0.0866 16.0 0.414 0.355 m Dibromochloromethane ND 0.0998 0.0866 ND 0.849 0.737 1,2-Dibromoethane ND 0.101 0.0866 ND 0.777 0.665 Chlorobenzene ND 0.102 0.0866 ND 0.469 0.398 Ethylbenzene 0.267 0.0983 0.0866 1.16 0.426 0.376 1,1,1,2-Tetrachloroethane ND 0.0998 0.0866 ND 0.684 0.594 m-/p-Xylenes 1.01 0.100 0.0866 4.40 0.435 0.376 o-Xylene 0.387 0.0992 0.0866 1.68 0.430 0.376 Styrene ND 0.0970 0.0866 ND 0.413 0.369 Bromoform ND 0.0993 0.0866 ND 1.03 0.895 1,1,2,2-Tetrachloroethane ND 0.100 0.0866 ND 0.686 0.594 4-Ethyltoluene 0.175 0.101 0.0866 0.859 0.494 0.425 m 2-Chlorotoluene ND 0.0999 0.0866 ND 0.517 0.448 1,3,5-Trimethylbenzene 0.216 0.100 0.0866 1.06 0.493 0.425 EA # 0124-075 Page 9 of 85 Sample Name Sample Info. Sampling Date Received Date Sample Type Batch Data File Dilution Pressurization Factor Acquisition Date Instrument Method Matrix Analyst Instrument Enthalpy ID Target Compound Concentration (ppbv) RL (ppbv) MDL (ppbv) Concentration (ug/m³) RL (ug/m³) MDL (ug/m³) Flags Air KMB Xavier 0124-075.SG-3.Can X2400590.D 1.000 2.474 2024-02-01 17:17 TO15_SCNV6.M 0124-075; 500mL Load; Can #6041/C10125 2024-01-31 12:31 2024-02-01 00:00 Sample Xavier_X020124A_0124-075.v1 Enthalpy Analytical Job No.: 0124-075-1 EPA Method TO-15 Analysis -- Run AECOM - Morrisville 60722767 Frye & Webster DC410064 SG-3 1,2,4-Trimethylbenzene 0.839 0.0991 0.0866 4.12 0.487 0.425 1,3-Dichlorobenzene ND 0.101 0.0866 ND 0.604 0.520 1,4-Dichlorobenzene ND 0.0995 0.0866 ND 0.598 0.520 Benzyl chloride ND 0.0996 0.0866 ND 0.515 0.448 1,2-Dichlorobenzene ND 0.100 0.0866 ND 0.602 0.520 1,2,4-Trichlorobenzene ND 0.0986 0.0866 ND 0.731 0.642 Hexachlorobutadiene ND 0.0978 0.0866 ND 1.04 0.923 Naphthalene ND 0.0997 0.0866 ND 0.522 0.454 1-Bromopropane ND 0.0982 0.0866 ND 0.494 0.435 1-Octene 0.286 0.0977 0.0866 1.31 0.448 0.397 m n-Octane 0.314 0.102 0.0866 1.46 0.476 0.404 Isopropylbenzene 0.0884 0.101 0.0866 0.434 0.494 0.425 J n-Propylbenzene 0.186 0.102 0.0866 0.912 0.499 0.425 Compound Response Retention Time (min) Concentration (ppbv) Flag Bromochloromethane (IS)931,462 11.02 5.21 pass 1,4-Difluorobenzene (IS)3,553,555 12.44 5.16 pass Chlorobenzene-d5 (IS)3,089,601 16.57 4.92 pass (ND) = Not Detected (J) = Below Calibration Range, (E) = Above Calibration Range, (m) = Manual Integration IS Acceptance Criteria: RT +/- 20 sec, Response +/- 40% EA # 0124-075 Page 10 of 85 Sample Name Sample Info. Sampling Date Received Date Sample Type Batch Data File Dilution Pressurization Factor Acquisition Date Instrument Method Matrix Analyst Instrument Enthalpy ID Target Compound Concentration (ppbv) RL (ppbv) MDL (ppbv) Concentration (ug/m³) RL (ug/m³) MDL (ug/m³) Flags Tetrachloroethene 1,811 5.06 4.33 12,277 34.3 29.3 Compound Response Retention Time (min) Concentration (ppbv) Flag Bromochloromethane (IS)816,524 11.02 5.21 pass (ND) = Not Detected (J) = Below Calibration Range, (E) = Above Calibration Range, (m) = Manual Integration IS Acceptance Criteria: RT +/- 20 sec, Response +/- 40% Air TDD Xavier 0124-075.SG-3.Can X2400682.D 50.000 2.474 2024-02-06 21:41 TO15_SCNV6.M 0124-075; *50=10mL Load; Can #6041/C10125 2024-01-31 12:31 2024-02-01 00:00 Sample Xavier_X020624A_0124-075.v1 Enthalpy Analytical Job No.: 0124-075-1 EPA Method TO-15 Analysis -- Run AECOM - Morrisville 60722767 Frye & Webster DC410064 SG-3 EA # 0124-075 Page 11 of 85 Sample Name Sample Info. Sampling Date Received Date Sample Type Batch Data File Dilution Pressurization Factor Acquisition Date Instrument Method Matrix Analyst Instrument Enthalpy ID Target Compound Concentration (ppbv) RL (ppbv) MDL (ppbv) Concentration (ug/m³) RL (ug/m³) MDL (ug/m³) Flags Propylene 12.6 0.104 0.0944 21.6 0.179 0.162 Freon 12 (CCl2F2)0.472 0.106 0.0944 2.33 0.522 0.466 m Freon 114 (C2Cl2F4)ND 0.108 0.0944 ND 0.755 0.659 Chloromethane 0.418 0.107 0.0944 0.862 0.220 0.195 Chloroethene (Vinyl chloride)ND 0.108 0.0944 ND 0.275 0.241 1,3-Butadiene 0.630 0.105 0.0944 1.39 0.232 0.209 Bromomethane ND 0.106 0.0944 ND 0.411 0.366 Chloroethane ND 0.110 0.0944 ND 0.289 0.249 Bromoethene (Vinyl bromide)ND 0.105 0.0944 ND 0.461 0.413 Freon 11 (CCl3F)0.221 0.114 0.0944 1.24 0.639 0.530 Ethanol 5.21 0.107 0.107 9.81 0.201 0.201 Acrolein 0.186 0.106 0.0944 0.426 0.243 0.216 m Freon 113 (C2Cl3F3)ND 0.109 0.0944 ND 0.838 0.723 1,1-Dichloroethene ND 0.108 0.0944 ND 0.430 0.374 Acetone 9.63 0.108 0.0944 22.9 0.257 0.224 Carbon disulfide 0.381 0.108 0.0944 1.18 0.335 0.294 Isopropyl alcohol 1.08 0.108 0.0944 2.66 0.264 0.232 Allyl chloride (3-chloropropene)ND 0.116 0.0944 ND 0.364 0.295 Acetonitrile ND 0.108 0.0944 ND 0.180 0.158 Methylene chloride 0.536 0.110 0.0944 1.86 0.383 0.328 trans-1,2-Dichloroethene ND 0.110 0.0944 ND 0.436 0.374 Methyl tert-butyl ether ND 0.111 0.0944 ND 0.399 0.340 Acrylonitrile ND 0.110 0.0944 ND 0.238 0.205 Hexane 0.509 0.110 0.0944 1.79 0.386 0.332 1,1-Dichloroethane ND 0.107 0.0944 ND 0.433 0.382 Vinyl acetate ND 0.110 0.0944 ND 0.388 0.332 cis-1,2-Dichloroethene ND 0.109 0.0944 ND 0.432 0.374 Methyl ethyl ketone (2-Butanone)0.378 0.112 0.0944 1.11 0.329 0.278 Ethyl acetate 0.401 0.108 0.0944 1.45 0.388 0.340 Chloroform 0.378 0.108 0.0944 1.84 0.528 0.460 Tetrahydrofuran 0.148 0.109 0.0944 0.436 0.322 0.278 m Air KMB Xavier 0124-075.SG-2.Can X2400591.D 1.000 2.696 2024-02-01 18:11 TO15_SCNV6.M 0124-075; 500mL Load; Can #13542 2024-01-31 13:11 2024-02-01 00:00 Sample Xavier_X020124A_0124-075.v1 Enthalpy Analytical Job No.: 0124-075-1 EPA Method TO-15 Analysis -- Run AECOM - Morrisville 60722767 Frye & Webster DC410064 SG-2 EA # 0124-075 Page 12 of 85 Sample Name Sample Info. Sampling Date Received Date Sample Type Batch Data File Dilution Pressurization Factor Acquisition Date Instrument Method Matrix Analyst Instrument Enthalpy ID Target Compound Concentration (ppbv) RL (ppbv) MDL (ppbv) Concentration (ug/m³) RL (ug/m³) MDL (ug/m³) Flags Air KMB Xavier 0124-075.SG-2.Can X2400591.D 1.000 2.696 2024-02-01 18:11 TO15_SCNV6.M 0124-075; 500mL Load; Can #13542 2024-01-31 13:11 2024-02-01 00:00 Sample Xavier_X020124A_0124-075.v1 Enthalpy Analytical Job No.: 0124-075-1 EPA Method TO-15 Analysis -- Run AECOM - Morrisville 60722767 Frye & Webster DC410064 SG-2 1,1,1-Trichloroethane ND 0.109 0.0944 ND 0.594 0.515 Cyclohexane 0.272 0.111 0.0944 0.937 0.380 0.325 Carbon tetrachloride ND 0.109 0.0944 ND 0.683 0.593 Benzene 0.470 0.108 0.0944 1.50 0.346 0.301 2,2,4-trimethylpentane 0.120 0.112 0.0944 0.560 0.521 0.441 1,2-Dichloroethane ND 0.111 0.0944 ND 0.449 0.382 Heptane 0.272 0.109 0.0944 1.12 0.447 0.386 Trichloroethene 0.958 0.109 0.0944 5.14 0.586 0.507 1,2-Dichloropropane ND 0.109 0.0944 ND 0.502 0.436 Methyl methacrylate 0.329 0.113 0.0944 1.35 0.462 0.386 1,4-Dioxane ND 0.108 0.0944 ND 0.390 0.340 Bromodichloromethane ND 0.109 0.0944 ND 0.729 0.632 cis-1,3-Dichloropropene ND 0.107 0.0944 ND 0.486 0.428 Methyl isobutyl ketone 1.12 0.112 0.0944 4.60 0.459 0.386 m Toluene 4.13 0.110 0.0944 15.5 0.413 0.355 trans-1,3-Dichloropropene ND 0.111 0.0944 ND 0.505 0.428 1,1,2-Trichloroethane ND 0.110 0.0944 ND 0.598 0.515 2-Hexanone (Methyl butyl ketone)0.600 0.110 0.0944 2.46 0.452 0.386 m Dibromochloromethane ND 0.109 0.0944 ND 0.925 0.803 1,2-Dibromoethane ND 0.110 0.0944 ND 0.847 0.725 Chlorobenzene ND 0.111 0.0944 ND 0.511 0.434 Ethylbenzene 1.35 0.107 0.0944 5.84 0.465 0.410 1,1,1,2-Tetrachloroethane ND 0.109 0.0944 ND 0.746 0.647 m-/p-Xylenes 5.52 0.109 0.0944 24.0 0.475 0.410 o-Xylene 1.76 0.108 0.0944 7.63 0.469 0.410 Styrene 0.118 0.106 0.0944 0.503 0.450 0.402 m Bromoform ND 0.108 0.0944 ND 1.12 0.975 1,1,2,2-Tetrachloroethane ND 0.109 0.0944 ND 0.748 0.647 4-Ethyltoluene 0.462 0.110 0.0944 2.27 0.539 0.464 m 2-Chlorotoluene ND 0.109 0.0944 ND 0.563 0.488 1,3,5-Trimethylbenzene 0.710 0.109 0.0944 3.49 0.537 0.464 EA # 0124-075 Page 13 of 85 Sample Name Sample Info. Sampling Date Received Date Sample Type Batch Data File Dilution Pressurization Factor Acquisition Date Instrument Method Matrix Analyst Instrument Enthalpy ID Target Compound Concentration (ppbv) RL (ppbv) MDL (ppbv) Concentration (ug/m³) RL (ug/m³) MDL (ug/m³) Flags Air KMB Xavier 0124-075.SG-2.Can X2400591.D 1.000 2.696 2024-02-01 18:11 TO15_SCNV6.M 0124-075; 500mL Load; Can #13542 2024-01-31 13:11 2024-02-01 00:00 Sample Xavier_X020124A_0124-075.v1 Enthalpy Analytical Job No.: 0124-075-1 EPA Method TO-15 Analysis -- Run AECOM - Morrisville 60722767 Frye & Webster DC410064 SG-2 1,2,4-Trimethylbenzene 3.13 0.108 0.0944 15.4 0.530 0.464 1,3-Dichlorobenzene ND 0.110 0.0944 ND 0.658 0.567 1,4-Dichlorobenzene ND 0.108 0.0944 ND 0.651 0.567 Benzyl chloride ND 0.108 0.0944 ND 0.561 0.488 1,2-Dichlorobenzene ND 0.109 0.0944 ND 0.656 0.567 1,2,4-Trichlorobenzene ND 0.107 0.0944 ND 0.797 0.700 Hexachlorobutadiene ND 0.107 0.0944 ND 1.14 1.01 Naphthalene 0.335 0.109 0.0944 1.76 0.569 0.494 1-Bromopropane ND 0.107 0.0944 ND 0.538 0.474 1-Octene 0.870 0.106 0.0944 3.99 0.488 0.433 n-Octane 1.53 0.111 0.0944 7.13 0.519 0.441 Isopropylbenzene ND 0.110 0.0944 ND 0.538 0.464 n-Propylbenzene 0.226 0.111 0.0944 1.11 0.544 0.464 Compound Response Retention Time (min) Concentration (ppbv) Flag Bromochloromethane (IS)928,326 11.02 5.21 pass 1,4-Difluorobenzene (IS)3,555,364 12.44 5.16 pass Chlorobenzene-d5 (IS)3,101,825 16.57 4.92 pass (ND) = Not Detected (J) = Below Calibration Range, (E) = Above Calibration Range, (m) = Manual Integration IS Acceptance Criteria: RT +/- 20 sec, Response +/- 40% EA # 0124-075 Page 14 of 85 Sample Name Sample Info. Sampling Date Received Date Sample Type Batch Data File Dilution Pressurization Factor Acquisition Date Instrument Method Matrix Analyst Instrument Enthalpy ID Target Compound Concentration (ppbv) RL (ppbv) MDL (ppbv) Concentration (ug/m³) RL (ug/m³) MDL (ug/m³) Flags Tetrachloroethene 129 0.441 0.377 871 2.99 2.56 Compound Response Retention Time (min) Concentration (ppbv) Flag Bromochloromethane (IS)761,368 11.02 5.21 pass (ND) = Not Detected (J) = Below Calibration Range, (E) = Above Calibration Range, (m) = Manual Integration IS Acceptance Criteria: RT +/- 20 sec, Response +/- 40% Air TDD Xavier 0124-075.SG-2.Can X2400665.D 4.000 2.696 2024-02-06 07:44 TO15_SCNV6.M 0124-075; *4=125mL Load; Can #13542 2024-01-31 13:11 2024-02-01 00:00 Sample Xavier_X020524A_0124-075.v1 Enthalpy Analytical Job No.: 0124-075-1 EPA Method TO-15 Analysis -- Run AECOM - Morrisville 60722767 Frye & Webster DC410064 SG-2 EA # 0124-075 Page 15 of 85 Sample Name Sample Info. Sampling Date Received Date Sample Type Batch Data File Dilution Pressurization Factor Acquisition Date Instrument Method Matrix Analyst Instrument Enthalpy ID Target Compound Concentration (ppbv) RL (ppbv) MDL (ppbv) Concentration (ug/m³) RL (ug/m³) MDL (ug/m³) Flags Propylene 153 146 132 262 250 227 Freon 12 (CCl2F2)ND 148 132 ND 729 652 Freon 114 (C2Cl2F4)ND 151 132 ND 1,055 921 Chloromethane ND 149 132 ND 308 272 Chloroethene (Vinyl chloride)ND 151 132 ND 385 337 1,3-Butadiene ND 147 132 ND 324 291 Bromomethane ND 148 132 ND 574 512 Chloroethane ND 153 132 ND 404 348 Bromoethene (Vinyl bromide)ND 147 132 ND 644 576 Freon 11 (CCl3F)ND 159 132 ND 893 740 Ethanol ND 149 149 ND 281 281 Acrolein ND 148 132 ND 340 302 Freon 113 (C2Cl3F3)ND 153 132 ND 1,171 1,010 1,1-Dichloroethene ND 152 132 ND 601 522 Acetone ND 151 132 ND 358 313 Carbon disulfide ND 150 132 ND 468 410 Isopropyl alcohol ND 150 132 ND 369 324 Allyl chloride (3-chloropropene)ND 163 132 ND 509 412 Acetonitrile ND 150 132 ND 252 221 Methylene chloride ND 154 132 ND 536 458 trans-1,2-Dichloroethene ND 154 132 ND 609 522 Methyl tert-butyl ether ND 155 132 ND 558 475 Acrylonitrile ND 153 132 ND 333 286 Hexane ND 153 132 ND 539 464 1,1-Dichloroethane ND 150 132 ND 605 533 Vinyl acetate ND 154 132 ND 542 464 cis-1,2-Dichloroethene 5,874 152 132 23,276 603 522 Methyl ethyl ketone (2-Butanone)ND 156 132 ND 459 389 Ethyl acetate ND 150 132 ND 542 475 Chloroform 239 151 132 1,165 737 643 Tetrahydrofuran ND 152 132 ND 449 389 Air TDD Xavier 0124-075.SG-1.CanP2 X2400715.D 1000.000 3.767 2024-02-08 06:35 TO15_SCNV6.M 0124-075; *1000=0.5mL load (2nd TP); Can #12423; MP2 2024-01-31 13:50 2024-02-01 00:00 Sample Xavier_X020724A_0124-075.v1 Enthalpy Analytical Job No.: 0124-075-1 EPA Method TO-15 Analysis -- Run AECOM - Morrisville 60722767 Frye & Webster DC410064 SG-1 EA # 0124-075 Page 16 of 85 Sample Name Sample Info. Sampling Date Received Date Sample Type Batch Data File Dilution Pressurization Factor Acquisition Date Instrument Method Matrix Analyst Instrument Enthalpy ID Target Compound Concentration (ppbv) RL (ppbv) MDL (ppbv) Concentration (ug/m³) RL (ug/m³) MDL (ug/m³) Flags Air TDD Xavier 0124-075.SG-1.CanP2 X2400715.D 1000.000 3.767 2024-02-08 06:35 TO15_SCNV6.M 0124-075; *1000=0.5mL load (2nd TP); Can #12423; MP2 2024-01-31 13:50 2024-02-01 00:00 Sample Xavier_X020724A_0124-075.v1 Enthalpy Analytical Job No.: 0124-075-1 EPA Method TO-15 Analysis -- Run AECOM - Morrisville 60722767 Frye & Webster DC410064 SG-1 1,1,1-Trichloroethane ND 152 132 ND 830 719 Cyclohexane 199 154 132 686 531 454 m Carbon tetrachloride ND 152 132 ND 954 829 Benzene ND 152 132 ND 484 421 2,2,4-trimethylpentane ND 156 132 ND 727 616 1,2-Dichloroethane ND 155 132 ND 627 533 Heptane ND 153 132 ND 625 540 Trichloroethene 11,969 152 132 64,278 818 708 1,2-Dichloropropane ND 152 132 ND 701 609 Methyl methacrylate ND 158 132 ND 646 540 1,4-Dioxane ND 151 132 ND 544 475 Bromodichloromethane ND 152 132 ND 1,019 883 cis-1,3-Dichloropropene ND 150 132 ND 679 598 Methyl isobutyl ketone ND 157 132 ND 641 540 Toluene ND 153 132 ND 578 497 trans-1,3-Dichloropropene ND 156 132 ND 705 598 1,1,2-Trichloroethane ND 153 132 ND 836 719 2-Hexanone (Methyl butyl ketone)ND 154 132 ND 631 540 Dibromochloromethane ND 152 132 ND 1,293 1,122 1,2-Dibromoethane ND 154 132 ND 1,184 1,012 Chlorobenzene ND 155 132 ND 714 607 Ethylbenzene ND 150 132 ND 649 572 1,1,1,2-Tetrachloroethane ND 152 132 ND 1,042 905 m-/p-Xylenes ND 153 132 ND 663 572 o-Xylene ND 151 132 ND 655 572 Styrene ND 148 132 ND 629 561 Bromoform ND 151 132 ND 1,561 1,362 1,1,2,2-Tetrachloroethane 195 152 132 1,336 1,045 905 m 4-Ethyltoluene ND 153 132 ND 753 648 2-Chlorotoluene ND 152 132 ND 787 682 1,3,5-Trimethylbenzene ND 153 132 ND 751 648 EA # 0124-075 Page 17 of 85 Sample Name Sample Info. Sampling Date Received Date Sample Type Batch Data File Dilution Pressurization Factor Acquisition Date Instrument Method Matrix Analyst Instrument Enthalpy ID Target Compound Concentration (ppbv) RL (ppbv) MDL (ppbv) Concentration (ug/m³) RL (ug/m³) MDL (ug/m³) Flags Air TDD Xavier 0124-075.SG-1.CanP2 X2400715.D 1000.000 3.767 2024-02-08 06:35 TO15_SCNV6.M 0124-075; *1000=0.5mL load (2nd TP); Can #12423; MP2 2024-01-31 13:50 2024-02-01 00:00 Sample Xavier_X020724A_0124-075.v1 Enthalpy Analytical Job No.: 0124-075-1 EPA Method TO-15 Analysis -- Run AECOM - Morrisville 60722767 Frye & Webster DC410064 SG-1 1,2,4-Trimethylbenzene ND 151 132 ND 741 648 1,3-Dichlorobenzene ND 153 132 ND 920 792 1,4-Dichlorobenzene ND 151 132 ND 910 792 Benzyl chloride ND 152 132 ND 784 682 1,2-Dichlorobenzene ND 153 132 ND 917 792 1,2,4-Trichlorobenzene ND 150 132 ND 1,113 978 Hexachlorobutadiene ND 149 132 ND 1,587 1,405 Naphthalene ND 152 132 ND 795 691 1-Bromopropane ND 149 132 ND 751 663 1-Octene ND 149 132 ND 682 605 n-Octane ND 155 132 ND 725 616 Isopropylbenzene ND 153 132 ND 752 648 n-Propylbenzene ND 155 132 ND 759 648 Compound Response Retention Time (min) Concentration (ppbv) Flag Bromochloromethane (IS)757,494 11.02 5.21 pass 1,4-Difluorobenzene (IS)2,942,726 12.44 5.16 pass Chlorobenzene-d5 (IS)2,579,309 16.57 4.92 pass (ND) = Not Detected (J) = Below Calibration Range, (E) = Above Calibration Range, (m) = Manual Integration IS Acceptance Criteria: RT +/- 20 sec, Response +/- 40% EA # 0124-075 Page 18 of 85 Sample Name Sample Info. Sampling Date Received Date Sample Type Batch Data File Dilution Pressurization Factor Acquisition Date Instrument Method Matrix Analyst Instrument Enthalpy ID Target Compound Concentration (ppbv) RL (ppbv) MDL (ppbv) Concentration (ug/m³) RL (ug/m³) MDL (ug/m³) Flags Tetrachloroethene 301,437 1,541 1,318 2,043,185 10,448 8,937 Compound Response Retention Time (min) Concentration (ppbv) Flag Bromochloromethane (IS)774,435 11.02 5.21 pass (ND) = Not Detected (J) = Below Calibration Range, (E) = Above Calibration Range, (m) = Manual Integration IS Acceptance Criteria: RT +/- 20 sec, Response +/- 40% Air TDD Xavier 0124-075.SG-1.CanP2 X2400693.D 10000.000 3.767 2024-02-07 11:23 TO15_SCNV6.M 0124-075; *10,000=0.5mL Loop@10xSyrDil (2nd TP); Can #12423; MP2 2024-01-31 13:50 2024-02-01 00:00 Sample Xavier_X020624A_0124-075.v1 Enthalpy Analytical Job No.: 0124-075-1 EPA Method TO-15 Analysis -- Run AECOM - Morrisville 60722767 Frye & Webster DC410064 SG-1 EA # 0124-075 Page 19 of 85 Sample Name Sample Info. Sampling Date Received Date Sample Type Batch Data File Dilution Pressurization Factor Acquisition Date Instrument Method Matrix Analyst Instrument Enthalpy ID Target Compound Concentration (ppbv) RL (ppbv) MDL (ppbv) Concentration (ug/m³) RL (ug/m³) MDL (ug/m³) Flags Propylene 37.5 0.203 0.184 64.5 0.349 0.316 Freon 12 (CCl2F2)0.467 0.205 0.184 2.31 1.01 0.907 Freon 114 (C2Cl2F4)ND 0.210 0.184 ND 1.47 1.28 Chloromethane 0.352 0.207 0.184 0.727 0.428 0.379 Chloroethene (Vinyl chloride)ND 0.210 0.184 ND 0.535 0.469 1,3-Butadiene 2.39 0.204 0.184 5.28 0.451 0.406 Bromomethane ND 0.206 0.184 ND 0.799 0.712 Chloroethane ND 0.213 0.184 ND 0.562 0.484 Bromoethene (Vinyl bromide)ND 0.205 0.184 ND 0.897 0.802 Freon 11 (CCl3F)0.230 0.221 0.184 1.29 1.24 1.03 Ethanol 2.41 0.208 0.208 4.54 0.391 0.391 Acrolein 0.298 0.207 0.184 0.682 0.473 0.421 m Freon 113 (C2Cl3F3)ND 0.213 0.184 ND 1.63 1.41 1,1-Dichloroethene ND 0.211 0.184 ND 0.836 0.727 Acetone 13.1 0.210 0.184 31.0 0.499 0.436 Carbon disulfide 14.9 0.209 0.184 46.3 0.651 0.571 Isopropyl alcohol 0.872 0.209 0.184 2.14 0.514 0.451 Allyl chloride (3-chloropropene)ND 0.227 0.184 ND 0.709 0.574 Acetonitrile ND 0.209 0.184 ND 0.351 0.308 Methylene chloride 0.245 0.215 0.184 0.849 0.746 0.637 trans-1,2-Dichloroethene ND 0.214 0.184 ND 0.848 0.727 Methyl tert-butyl ether 0.224 0.216 0.184 0.806 0.777 0.661 Acrylonitrile ND 0.214 0.184 ND 0.463 0.398 Hexane 1.23 0.213 0.184 4.32 0.751 0.647 1,1-Dichloroethane ND 0.208 0.184 ND 0.843 0.742 Vinyl acetate ND 0.215 0.184 ND 0.755 0.646 cis-1,2-Dichloroethene 0.303 0.212 0.184 1.20 0.839 0.727 Methyl ethyl ketone (2-Butanone)0.691 0.217 0.184 2.04 0.639 0.541 Ethyl acetate 0.356 0.209 0.184 1.28 0.754 0.661 Chloroform 0.407 0.210 0.184 1.99 1.03 0.896 Tetrahydrofuran ND 0.212 0.184 ND 0.626 0.541 Air TDD Xavier 0124-075.SG-10.Can X2400663.D 2.000 2.622 2024-02-06 03:51 TO15_SCNV6.M 0124-075; *2=250mL Load; Can #11251 2024-01-31 14:32 2024-02-01 00:00 Sample Xavier_X020524A_0124-075.v1 Enthalpy Analytical Job No.: 0124-075-1 EPA Method TO-15 Analysis -- Run AECOM - Morrisville 60722767 Frye & Webster DC410064 SG-10 EA # 0124-075 Page 20 of 85 Sample Name Sample Info. Sampling Date Received Date Sample Type Batch Data File Dilution Pressurization Factor Acquisition Date Instrument Method Matrix Analyst Instrument Enthalpy ID Target Compound Concentration (ppbv) RL (ppbv) MDL (ppbv) Concentration (ug/m³) RL (ug/m³) MDL (ug/m³) Flags Air TDD Xavier 0124-075.SG-10.Can X2400663.D 2.000 2.622 2024-02-06 03:51 TO15_SCNV6.M 0124-075; *2=250mL Load; Can #11251 2024-01-31 14:32 2024-02-01 00:00 Sample Xavier_X020524A_0124-075.v1 Enthalpy Analytical Job No.: 0124-075-1 EPA Method TO-15 Analysis -- Run AECOM - Morrisville 60722767 Frye & Webster DC410064 SG-10 1,1,1-Trichloroethane ND 0.212 0.184 ND 1.16 1.00 Cyclohexane 0.639 0.215 0.184 2.20 0.740 0.631 Carbon tetrachloride ND 0.211 0.184 ND 1.33 1.15 Benzene 1.28 0.211 0.184 4.08 0.674 0.586 2,2,4-trimethylpentane 0.218 0.217 0.184 1.02 1.01 0.857 1,2-Dichloroethane ND 0.216 0.184 ND 0.873 0.742 Heptane 0.575 0.212 0.184 2.36 0.870 0.752 Trichloroethene 0.489 0.212 0.184 2.63 1.14 0.986 1,2-Dichloropropane ND 0.211 0.184 ND 0.976 0.848 Methyl methacrylate ND 0.220 0.184 ND 0.899 0.751 1,4-Dioxane ND 0.210 0.184 ND 0.758 0.661 Bromodichloromethane ND 0.212 0.184 ND 1.42 1.23 cis-1,3-Dichloropropene ND 0.208 0.184 ND 0.945 0.833 Methyl isobutyl ketone 3.55 0.218 0.184 14.5 0.892 0.751 Toluene 3.88 0.214 0.184 14.6 0.804 0.691 trans-1,3-Dichloropropene ND 0.216 0.184 ND 0.982 0.833 1,1,2-Trichloroethane ND 0.213 0.184 ND 1.16 1.00 Tetrachloroethene 34.8 0.215 0.184 236 1.45 1.24 2-Hexanone (Methyl butyl ketone)2.03 0.215 0.184 8.29 0.879 0.751 m Dibromochloromethane ND 0.211 0.184 ND 1.80 1.56 1,2-Dibromoethane ND 0.215 0.184 ND 1.65 1.41 Chlorobenzene ND 0.216 0.184 ND 0.994 0.844 Ethylbenzene 3.13 0.208 0.184 13.6 0.904 0.796 1,1,1,2-Tetrachloroethane ND 0.211 0.184 ND 1.45 1.26 m-/p-Xylenes 12.4 0.213 0.184 53.6 0.923 0.796 o-Xylene 8.51 0.210 0.184 36.9 0.912 0.796 Styrene 0.367 0.206 0.184 1.56 0.875 0.781 m Bromoform ND 0.210 0.184 ND 2.17 1.90 1,1,2,2-Tetrachloroethane 0.248 0.212 0.184 1.70 1.45 1.26 4-Ethyltoluene 0.722 0.213 0.184 3.55 1.05 0.902 m 2-Chlorotoluene ND 0.212 0.184 ND 1.10 0.950 EA # 0124-075 Page 21 of 85 Sample Name Sample Info. Sampling Date Received Date Sample Type Batch Data File Dilution Pressurization Factor Acquisition Date Instrument Method Matrix Analyst Instrument Enthalpy ID Target Compound Concentration (ppbv) RL (ppbv) MDL (ppbv) Concentration (ug/m³) RL (ug/m³) MDL (ug/m³) Flags Air TDD Xavier 0124-075.SG-10.Can X2400663.D 2.000 2.622 2024-02-06 03:51 TO15_SCNV6.M 0124-075; *2=250mL Load; Can #11251 2024-01-31 14:32 2024-02-01 00:00 Sample Xavier_X020524A_0124-075.v1 Enthalpy Analytical Job No.: 0124-075-1 EPA Method TO-15 Analysis -- Run AECOM - Morrisville 60722767 Frye & Webster DC410064 SG-10 1,3,5-Trimethylbenzene 1.10 0.213 0.184 5.39 1.04 0.902 1,2,4-Trimethylbenzene 4.43 0.210 0.184 21.7 1.03 0.902 1,3-Dichlorobenzene ND 0.213 0.184 ND 1.28 1.10 1,4-Dichlorobenzene ND 0.211 0.184 ND 1.27 1.10 Benzyl chloride ND 0.211 0.184 ND 1.09 0.950 1,2-Dichlorobenzene ND 0.212 0.184 ND 1.28 1.10 1,2,4-Trichlorobenzene ND 0.209 0.184 ND 1.55 1.36 Hexachlorobutadiene ND 0.207 0.184 ND 2.21 1.96 Naphthalene 0.216 0.211 0.184 1.13 1.11 0.962 m 1-Bromopropane ND 0.208 0.184 ND 1.05 0.923 1-Octene 6.13 0.207 0.184 28.1 0.950 0.842 n-Octane 20.3 0.216 0.184 94.6 1.01 0.857 Isopropylbenzene 0.282 0.213 0.184 1.39 1.05 0.902 n-Propylbenzene 0.439 0.215 0.184 2.16 1.06 0.902 Compound Response Retention Time (min) Concentration (ppbv) Flag Bromochloromethane (IS)781,565 11.02 5.21 pass 1,4-Difluorobenzene (IS)3,028,498 12.44 5.16 pass Chlorobenzene-d5 (IS)2,608,714 16.57 4.92 pass (ND) = Not Detected (J) = Below Calibration Range, (E) = Above Calibration Range, (m) = Manual Integration IS Acceptance Criteria: RT +/- 20 sec, Response +/- 40% EA # 0124-075 Page 22 of 85 Sample Name Sample Info. Sampling Date Received Date Sample Type Batch Data File Dilution Pressurization Factor Acquisition Date Instrument Method Matrix Analyst Instrument Enthalpy ID Target Compound Concentration (ppbv) RL (ppbv) MDL (ppbv) Concentration (ug/m³) RL (ug/m³) MDL (ug/m³) Flags Propylene 130 15.9 14.4 223 27.3 24.7 Freon 12 (CCl2F2)ND 16.1 14.4 ND 79.5 71.1 Freon 114 (C2Cl2F4)ND 16.5 14.4 ND 115 100 Chloromethane ND 16.3 14.4 ND 33.6 29.7 Chloroethene (Vinyl chloride)420 16.4 14.4 1,072 42.0 36.7 m 1,3-Butadiene ND 16.0 14.4 ND 35.4 31.8 Bromomethane ND 16.1 14.4 ND 62.6 55.8 Chloroethane ND 16.7 14.4 ND 44.0 37.9 Bromoethene (Vinyl bromide)ND 16.1 14.4 ND 70.3 62.9 Freon 11 (CCl3F)ND 17.3 14.4 ND 97.4 80.8 Ethanol 19.9 16.3 16.3 37.5 30.7 30.7 Acrolein ND 16.2 14.4 ND 37.1 33.0 Freon 113 (C2Cl3F3)ND 16.7 14.4 ND 128 110 1,1-Dichloroethene 489 16.5 14.4 1,939 65.5 57.0 Acetone 2,055 16.5 14.4 4,878 39.1 34.1 Carbon disulfide 22.5 16.4 14.4 70.1 51.0 44.8 m Isopropyl alcohol ND 16.4 14.4 ND 40.3 35.3 Allyl chloride (3-chloropropene)ND 17.8 14.4 ND 55.5 45.0 Acetonitrile ND 16.4 14.4 ND 27.5 24.1 Methylene chloride 34.2 16.8 14.4 119 58.4 49.9 m trans-1,2-Dichloroethene 111 16.8 14.4 439 66.4 57.0 Methyl tert-butyl ether ND 16.9 14.4 ND 60.9 51.8 Acrylonitrile 472 16.7 14.4 1,023 36.3 31.2 Hexane 4,497 16.7 14.4 15,840 58.8 50.7 1,1-Dichloroethane ND 16.3 14.4 ND 66.0 58.2 Vinyl acetate ND 16.8 14.4 ND 59.2 50.6 Methyl ethyl ketone (2-Butanone)ND 17.0 14.4 ND 50.1 42.4 Ethyl acetate ND 16.4 14.4 ND 59.1 51.8 Chloroform 133 16.5 14.4 650 80.5 70.2 Tetrahydrofuran ND 16.6 14.4 ND 49.0 42.4 1,1,1-Trichloroethane ND 16.6 14.4 ND 90.5 78.4 Air TDD Xavier 0124-075.SG-11.CanP2 X2400741.D 100.000 4.110 2024-02-09 07:25 TO15_SCNV6.M 0124-075; *100=5mL load (2nd TP); Can #13541; MP2 2024-01-31 14:52 2024-02-01 00:00 Sample Xavier_X020924A_0124-075.v2 Enthalpy Analytical Job No.: 0124-075-1 EPA Method TO-15 Analysis -- Run AECOM - Morrisville 60722767 Frye & Webster DC410064 SG-11 EA # 0124-075 Page 23 of 85 Sample Name Sample Info. Sampling Date Received Date Sample Type Batch Data File Dilution Pressurization Factor Acquisition Date Instrument Method Matrix Analyst Instrument Enthalpy ID Target Compound Concentration (ppbv) RL (ppbv) MDL (ppbv) Concentration (ug/m³) RL (ug/m³) MDL (ug/m³) Flags Air TDD Xavier 0124-075.SG-11.CanP2 X2400741.D 100.000 4.110 2024-02-09 07:25 TO15_SCNV6.M 0124-075; *100=5mL load (2nd TP); Can #13541; MP2 2024-01-31 14:52 2024-02-01 00:00 Sample Xavier_X020924A_0124-075.v2 Enthalpy Analytical Job No.: 0124-075-1 EPA Method TO-15 Analysis -- Run AECOM - Morrisville 60722767 Frye & Webster DC410064 SG-11 Cyclohexane 5,347 16.8 14.4 18,395 58.0 49.5 Carbon tetrachloride ND 16.6 14.4 ND 104 90.4 Benzene 43.1 16.5 14.4 138 52.8 45.9 2,2,4-trimethylpentane 213 17.0 14.4 994 79.4 67.2 m 1,2-Dichloroethane ND 16.9 14.4 ND 68.4 58.2 Heptane 2,124 16.7 14.4 8,701 68.2 58.9 1,2-Dichloropropane 320 16.6 14.4 1,476 76.4 66.4 m Methyl methacrylate 8,721 17.2 14.4 35,691 70.4 58.9 1,4-Dioxane ND 16.5 14.4 ND 59.4 51.8 Bromodichloromethane ND 16.6 14.4 ND 111 96.3 cis-1,3-Dichloropropene ND 16.3 14.4 ND 74.0 65.2 Methyl isobutyl ketone 301 17.1 14.4 1,231 69.9 58.9 Toluene ND 16.7 14.4 ND 63.0 54.2 trans-1,3-Dichloropropene ND 17.0 14.4 ND 76.9 65.2 1,1,2-Trichloroethane ND 16.7 14.4 ND 91.2 78.4 2-Hexanone (Methyl butyl ketone)4,738 16.8 14.4 19,398 68.8 58.9 m Dibromochloromethane ND 16.6 14.4 ND 141 122 1,2-Dibromoethane ND 16.8 14.4 ND 129 110 Chlorobenzene 21.5 16.9 14.4 99.0 77.9 66.2 Ethylbenzene 502 16.3 14.4 2,178 70.8 62.4 1,1,1,2-Tetrachloroethane ND 16.6 14.4 ND 114 98.7 m-/p-Xylenes 73.1 16.7 14.4 317 72.3 62.4 o-Xylene ND 16.5 14.4 ND 71.5 62.4 Styrene ND 16.1 14.4 ND 68.6 61.2 Bromoform ND 16.5 14.4 ND 170 149 1,1,2,2-Tetrachloroethane 897 16.6 14.4 6,154 114 98.7 m 4-Ethyltoluene 642 16.7 14.4 3,154 82.1 70.7 m 2-Chlorotoluene ND 16.6 14.4 ND 85.8 74.4 1,3,5-Trimethylbenzene 407 16.7 14.4 2,001 81.9 70.7 1,2,4-Trimethylbenzene 1,853 16.5 14.4 9,101 80.8 70.7 1,3-Dichlorobenzene ND 16.7 14.4 ND 100 86.4 EA # 0124-075 Page 24 of 85 Sample Name Sample Info. Sampling Date Received Date Sample Type Batch Data File Dilution Pressurization Factor Acquisition Date Instrument Method Matrix Analyst Instrument Enthalpy ID Target Compound Concentration (ppbv) RL (ppbv) MDL (ppbv) Concentration (ug/m³) RL (ug/m³) MDL (ug/m³) Flags Air TDD Xavier 0124-075.SG-11.CanP2 X2400741.D 100.000 4.110 2024-02-09 07:25 TO15_SCNV6.M 0124-075; *100=5mL load (2nd TP); Can #13541; MP2 2024-01-31 14:52 2024-02-01 00:00 Sample Xavier_X020924A_0124-075.v2 Enthalpy Analytical Job No.: 0124-075-1 EPA Method TO-15 Analysis -- Run AECOM - Morrisville 60722767 Frye & Webster DC410064 SG-11 1,4-Dichlorobenzene ND 16.5 14.4 ND 99.3 86.4 Benzyl chloride 284 16.5 14.4 1,467 85.6 74.4 m 1,2-Dichlorobenzene ND 16.7 14.4 ND 100 86.4 1,2,4-Trichlorobenzene ND 16.4 14.4 ND 121 107 Hexachlorobutadiene ND 16.2 14.4 ND 173 153 Naphthalene ND 16.6 14.4 ND 86.7 75.4 1-Bromopropane ND 16.3 14.4 ND 82.0 72.3 1-Octene 2,281 16.2 14.4 10,460 74.4 66.0 n-Octane 1,675 16.9 14.4 7,821 79.1 67.2 Isopropylbenzene 544 16.7 14.4 2,672 82.0 70.7 m n-Propylbenzene 1,164 16.9 14.4 5,719 82.9 70.7 Compound Response Retention Time (min) Concentration (ppbv) Flag Bromochloromethane (IS)890,488 11.02 5.21 pass 1,4-Difluorobenzene (IS)3,396,180 12.44 5.16 pass Chlorobenzene-d5 (IS)2,992,102 16.57 4.92 pass (ND) = Not Detected (J) = Below Calibration Range, (E) = Above Calibration Range, (m) = Manual Integration IS Acceptance Criteria: RT +/- 20 sec, Response +/- 40% EA # 0124-075 Page 25 of 85 Sample Name Sample Info. Sampling Date Received Date Sample Type Batch Data File Dilution Pressurization Factor Acquisition Date Instrument Method Matrix Analyst Instrument Enthalpy ID Target Compound Concentration (ppbv) RL (ppbv) MDL (ppbv) Concentration (ug/m³) RL (ug/m³) MDL (ug/m³) Flags cis-1,2-Dichloroethene 39,653 1,660 1,438 157,117 6,578 5,699 Trichloroethene 43,387 1,662 1,438 233,007 8,925 7,724 Tetrachloroethene 255,124 1,682 1,438 1,729,266 11,398 9,749 m Compound Response Retention Time (min) Concentration (ppbv) Flag Bromochloromethane (IS)774,578 11.02 5.21 pass 1,4-Difluorobenzene (IS)3,019,070 12.44 5.16 pass Chlorobenzene-d5 (IS)2,635,794 16.57 4.92 pass (ND) = Not Detected (J) = Below Calibration Range, (E) = Above Calibration Range, (m) = Manual Integration IS Acceptance Criteria: RT +/- 20 sec, Response +/- 40% Air TDD Xavier 0124-075.SG-11.CanP2 X2400692.D 10000.000 4.110 2024-02-07 10:23 TO15_SCNV6.M 0124-075; *10,000=0.5mL Loop@10xSyrDil (2nd TP); Can #13541; MP2 2024-01-31 14:52 2024-02-01 00:00 Sample Xavier_X020624A_0124-075.v1 Enthalpy Analytical Job No.: 0124-075-1 EPA Method TO-15 Analysis -- Run AECOM - Morrisville 60722767 Frye & Webster DC410064 SG-11 EA # 0124-075 Page 26 of 85 Sample Name Sample Info. Sampling Date Received Date Sample Type Batch Data File Dilution Pressurization Factor Acquisition Date Instrument Method Matrix Analyst Instrument Enthalpy ID Target Compound Concentration (ppbv) RL (ppbv) MDL (ppbv) Concentration (ug/m³) RL (ug/m³) MDL (ug/m³) Flags Propylene 0.915 0.0967 0.0876 1.57 0.166 0.151 Freon 12 (CCl2F2)0.469 0.0980 0.0876 2.32 0.484 0.433 Freon 114 (C2Cl2F4)ND 0.100 0.0876 ND 0.700 0.612 Chloromethane 0.196 0.0990 0.0876 0.405 0.204 0.181 Chloroethene (Vinyl chloride)ND 0.1000 0.0876 ND 0.255 0.224 1,3-Butadiene ND 0.0974 0.0876 ND 0.215 0.194 Bromomethane ND 0.0982 0.0876 ND 0.381 0.340 Chloroethane ND 0.102 0.0876 ND 0.268 0.231 Bromoethene (Vinyl bromide)ND 0.0979 0.0876 ND 0.428 0.383 Freon 11 (CCl3F)0.245 0.106 0.0876 1.38 0.593 0.492 Ethanol 0.866 0.0992 0.0992 1.63 0.187 0.187 Acrolein ND 0.0986 0.0876 ND 0.226 0.201 Freon 113 (C2Cl3F3)ND 0.102 0.0876 ND 0.778 0.671 1,1-Dichloroethene ND 0.101 0.0876 ND 0.399 0.347 Acetone 7.37 0.100 0.0876 17.5 0.238 0.208 Carbon disulfide 0.378 0.0998 0.0876 1.18 0.310 0.272 Isopropyl alcohol 0.423 0.0998 0.0876 1.04 0.245 0.215 m Allyl chloride (3-chloropropene)ND 0.108 0.0876 ND 0.338 0.274 Acetonitrile ND 0.0998 0.0876 ND 0.167 0.147 Methylene chloride 0.104 0.102 0.0876 0.363 0.356 0.304 trans-1,2-Dichloroethene ND 0.102 0.0876 ND 0.404 0.347 Methyl tert-butyl ether ND 0.103 0.0876 ND 0.371 0.315 Acrylonitrile ND 0.102 0.0876 ND 0.221 0.190 Hexane 0.237 0.102 0.0876 0.833 0.358 0.308 1,1-Dichloroethane ND 0.0994 0.0876 ND 0.402 0.354 Vinyl acetate ND 0.102 0.0876 ND 0.360 0.308 cis-1,2-Dichloroethene ND 0.101 0.0876 ND 0.400 0.347 Methyl ethyl ketone (2-Butanone)0.233 0.103 0.0876 0.687 0.305 0.258 m Ethyl acetate ND 0.0999 0.0876 ND 0.360 0.315 Chloroform 0.168 0.100 0.0876 0.822 0.490 0.427 Tetrahydrofuran 0.209 0.101 0.0876 0.617 0.298 0.258 Air TDD Xavier 0124-075.SG-6.Can X2400662.D 1.000 2.502 2024-02-06 03:00 TO15_SCNV6.M 0124-075; 500mL Load; Can #5731 2024-02-01 09:20 2024-02-01 00:00 Sample Xavier_X020524A_0124-075.v1 Enthalpy Analytical Job No.: 0124-075-1 EPA Method TO-15 Analysis -- Run AECOM - Morrisville 60722767 Frye & Webster DC410064 SG-6 EA # 0124-075 Page 27 of 85 Sample Name Sample Info. Sampling Date Received Date Sample Type Batch Data File Dilution Pressurization Factor Acquisition Date Instrument Method Matrix Analyst Instrument Enthalpy ID Target Compound Concentration (ppbv) RL (ppbv) MDL (ppbv) Concentration (ug/m³) RL (ug/m³) MDL (ug/m³) Flags Air TDD Xavier 0124-075.SG-6.Can X2400662.D 1.000 2.502 2024-02-06 03:00 TO15_SCNV6.M 0124-075; 500mL Load; Can #5731 2024-02-01 09:20 2024-02-01 00:00 Sample Xavier_X020524A_0124-075.v1 Enthalpy Analytical Job No.: 0124-075-1 EPA Method TO-15 Analysis -- Run AECOM - Morrisville 60722767 Frye & Webster DC410064 SG-6 1,1,1-Trichloroethane ND 0.101 0.0876 ND 0.551 0.477 Cyclohexane 0.0949 0.103 0.0876 0.326 0.353 0.301 J Carbon tetrachloride ND 0.101 0.0876 ND 0.634 0.550 Benzene ND 0.101 0.0876 ND 0.321 0.280 2,2,4-trimethylpentane ND 0.103 0.0876 ND 0.483 0.409 1,2-Dichloroethane ND 0.103 0.0876 ND 0.416 0.354 Heptane ND 0.101 0.0876 ND 0.415 0.359 Trichloroethene ND 0.101 0.0876 ND 0.543 0.470 1,2-Dichloropropane ND 0.101 0.0876 ND 0.465 0.404 Methyl methacrylate ND 0.105 0.0876 ND 0.429 0.358 1,4-Dioxane ND 0.100 0.0876 ND 0.361 0.315 Bromodichloromethane ND 0.101 0.0876 ND 0.677 0.586 cis-1,3-Dichloropropene ND 0.0994 0.0876 ND 0.451 0.397 Methyl isobutyl ketone 0.0973 0.104 0.0876 0.398 0.426 0.358 J Toluene 0.521 0.102 0.0876 1.96 0.384 0.330 trans-1,3-Dichloropropene ND 0.103 0.0876 ND 0.468 0.397 1,1,2-Trichloroethane ND 0.102 0.0876 ND 0.555 0.477 Tetrachloroethene 19.6 0.102 0.0876 133 0.694 0.593 2-Hexanone (Methyl butyl ketone)0.0967 0.102 0.0876 0.396 0.419 0.358 J Dibromochloromethane ND 0.101 0.0876 ND 0.859 0.745 1,2-Dibromoethane ND 0.102 0.0876 ND 0.786 0.672 Chlorobenzene ND 0.103 0.0876 ND 0.474 0.403 Ethylbenzene ND 0.0994 0.0876 ND 0.431 0.380 1,1,1,2-Tetrachloroethane ND 0.101 0.0876 ND 0.692 0.601 m-/p-Xylenes ND 0.101 0.0876 ND 0.440 0.380 o-Xylene ND 0.100 0.0876 ND 0.435 0.380 Styrene ND 0.0981 0.0876 ND 0.417 0.373 Bromoform ND 0.100 0.0876 ND 1.04 0.904 1,1,2,2-Tetrachloroethane ND 0.101 0.0876 ND 0.694 0.601 4-Ethyltoluene ND 0.102 0.0876 ND 0.500 0.430 2-Chlorotoluene ND 0.101 0.0876 ND 0.522 0.453 EA # 0124-075 Page 28 of 85 Sample Name Sample Info. Sampling Date Received Date Sample Type Batch Data File Dilution Pressurization Factor Acquisition Date Instrument Method Matrix Analyst Instrument Enthalpy ID Target Compound Concentration (ppbv) RL (ppbv) MDL (ppbv) Concentration (ug/m³) RL (ug/m³) MDL (ug/m³) Flags Air TDD Xavier 0124-075.SG-6.Can X2400662.D 1.000 2.502 2024-02-06 03:00 TO15_SCNV6.M 0124-075; 500mL Load; Can #5731 2024-02-01 09:20 2024-02-01 00:00 Sample Xavier_X020524A_0124-075.v1 Enthalpy Analytical Job No.: 0124-075-1 EPA Method TO-15 Analysis -- Run AECOM - Morrisville 60722767 Frye & Webster DC410064 SG-6 1,3,5-Trimethylbenzene ND 0.101 0.0876 ND 0.498 0.430 1,2,4-Trimethylbenzene ND 0.100 0.0876 ND 0.492 0.430 1,3-Dichlorobenzene ND 0.102 0.0876 ND 0.611 0.526 1,4-Dichlorobenzene ND 0.101 0.0876 ND 0.604 0.526 Benzyl chloride ND 0.101 0.0876 ND 0.521 0.453 1,2-Dichlorobenzene ND 0.101 0.0876 ND 0.609 0.526 1,2,4-Trichlorobenzene ND 0.0997 0.0876 ND 0.739 0.649 Hexachlorobutadiene ND 0.0989 0.0876 ND 1.05 0.933 Naphthalene ND 0.101 0.0876 ND 0.528 0.459 1-Bromopropane ND 0.0993 0.0876 ND 0.499 0.440 1-Octene ND 0.0988 0.0876 ND 0.453 0.402 n-Octane ND 0.103 0.0876 ND 0.481 0.409 Isopropylbenzene ND 0.102 0.0876 ND 0.499 0.430 n-Propylbenzene ND 0.103 0.0876 ND 0.504 0.430 Compound Response Retention Time (min) Concentration (ppbv) Flag Bromochloromethane (IS)786,425 11.02 5.21 pass 1,4-Difluorobenzene (IS)3,020,836 12.44 5.16 pass Chlorobenzene-d5 (IS)2,606,419 16.57 4.92 pass (ND) = Not Detected (J) = Below Calibration Range, (E) = Above Calibration Range, (m) = Manual Integration IS Acceptance Criteria: RT +/- 20 sec, Response +/- 40% EA # 0124-075 Page 29 of 85 Sample Name Sample Info. Sampling Date Received Date Sample Type Batch Data File Dilution Pressurization Factor Acquisition Date Instrument Method Matrix Analyst Instrument Enthalpy ID Target Compound Concentration (ppbv) RL (ppbv) MDL (ppbv) Concentration (ug/m³) RL (ug/m³) MDL (ug/m³) Flags Propylene 18.2 0.101 0.0918 31.3 0.174 0.158 Freon 12 (CCl2F2)0.456 0.103 0.0918 2.25 0.508 0.454 m Freon 114 (C2Cl2F4)ND 0.105 0.0918 ND 0.734 0.641 Chloromethane 0.0976 0.104 0.0918 0.201 0.214 0.189 J Chloroethene (Vinyl chloride)ND 0.105 0.0918 ND 0.268 0.235 1,3-Butadiene 0.276 0.102 0.0918 0.610 0.226 0.203 Bromomethane ND 0.103 0.0918 ND 0.399 0.356 Chloroethane 0.0942 0.107 0.0918 0.248 0.281 0.242 J, m Bromoethene (Vinyl bromide)ND 0.103 0.0918 ND 0.449 0.401 Freon 11 (CCl3F)0.197 0.111 0.0918 1.11 0.621 0.515 Ethanol 0.709 0.104 0.104 1.33 0.196 0.196 m Acrolein 1.96 0.103 0.0918 4.50 0.237 0.210 m Freon 113 (C2Cl3F3)ND 0.106 0.0918 ND 0.816 0.703 1,1-Dichloroethene ND 0.106 0.0918 ND 0.418 0.364 Acetone 3.74 0.105 0.0918 8.88 0.250 0.218 Carbon disulfide 3.10 0.105 0.0918 9.66 0.326 0.286 Isopropyl alcohol 0.208 0.105 0.0918 0.510 0.257 0.225 Allyl chloride (3-chloropropene)ND 0.113 0.0918 ND 0.354 0.287 Acetonitrile ND 0.105 0.0918 ND 0.175 0.154 Methylene chloride 0.141 0.107 0.0918 0.490 0.373 0.319 m trans-1,2-Dichloroethene ND 0.107 0.0918 ND 0.424 0.364 Methyl tert-butyl ether ND 0.108 0.0918 ND 0.389 0.331 Acrylonitrile ND 0.107 0.0918 ND 0.232 0.199 Hexane 0.916 0.107 0.0918 3.23 0.375 0.323 1,1-Dichloroethane ND 0.104 0.0918 ND 0.421 0.371 Vinyl acetate ND 0.107 0.0918 ND 0.378 0.323 cis-1,2-Dichloroethene 1.52 0.106 0.0918 6.04 0.420 0.364 Methyl ethyl ketone (2-Butanone)0.380 0.108 0.0918 1.12 0.320 0.271 Ethyl acetate ND 0.105 0.0918 ND 0.377 0.331 Chloroform 0.117 0.105 0.0918 0.570 0.513 0.448 Tetrahydrofuran 0.161 0.106 0.0918 0.475 0.313 0.271 Air KMB Xavier 0124-075.SG-4.Can X2400596.D 1.000 2.623 2024-02-01 22:42 TO15_SCNV6.M 0124-075; 500mL Load; Can #5703/C10119 2024-02-01 10:19 2024-02-01 00:00 Sample Xavier_X020124A_0124-075.v1 Enthalpy Analytical Job No.: 0124-075-1 EPA Method TO-15 Analysis -- Run AECOM - Morrisville 60722767 Frye & Webster DC410064 SG-4 EA # 0124-075 Page 30 of 85 Sample Name Sample Info. Sampling Date Received Date Sample Type Batch Data File Dilution Pressurization Factor Acquisition Date Instrument Method Matrix Analyst Instrument Enthalpy ID Target Compound Concentration (ppbv) RL (ppbv) MDL (ppbv) Concentration (ug/m³) RL (ug/m³) MDL (ug/m³) Flags Air KMB Xavier 0124-075.SG-4.Can X2400596.D 1.000 2.623 2024-02-01 22:42 TO15_SCNV6.M 0124-075; 500mL Load; Can #5703/C10119 2024-02-01 10:19 2024-02-01 00:00 Sample Xavier_X020124A_0124-075.v1 Enthalpy Analytical Job No.: 0124-075-1 EPA Method TO-15 Analysis -- Run AECOM - Morrisville 60722767 Frye & Webster DC410064 SG-4 1,1,1-Trichloroethane ND 0.106 0.0918 ND 0.578 0.501 Cyclohexane 1.65 0.108 0.0918 5.67 0.370 0.316 Carbon tetrachloride ND 0.106 0.0918 ND 0.664 0.577 Benzene 0.122 0.106 0.0918 0.389 0.337 0.293 2,2,4-trimethylpentane 0.311 0.108 0.0918 1.45 0.506 0.429 1,2-Dichloroethane 0.110 0.108 0.0918 0.445 0.437 0.371 Heptane 0.340 0.106 0.0918 1.39 0.435 0.376 Trichloroethene 1.68 0.106 0.0918 9.03 0.570 0.493 1,2-Dichloropropane ND 0.106 0.0918 ND 0.488 0.424 Methyl methacrylate 1.01 0.110 0.0918 4.15 0.449 0.376 1,4-Dioxane ND 0.105 0.0918 ND 0.379 0.331 Bromodichloromethane ND 0.106 0.0918 ND 0.710 0.615 cis-1,3-Dichloropropene ND 0.104 0.0918 ND 0.473 0.416 Methyl isobutyl ketone 8.73 0.109 0.0918 35.7 0.446 0.376 Toluene 0.903 0.107 0.0918 3.40 0.402 0.346 trans-1,3-Dichloropropene ND 0.108 0.0918 ND 0.491 0.416 1,1,2-Trichloroethane 0.916 0.107 0.0918 4.99 0.582 0.501 2-Hexanone (Methyl butyl ketone)3.53 0.107 0.0918 14.5 0.439 0.376 Dibromochloromethane ND 0.106 0.0918 ND 0.900 0.781 1,2-Dibromoethane ND 0.107 0.0918 ND 0.824 0.705 Chlorobenzene ND 0.108 0.0918 ND 0.497 0.422 Ethylbenzene 0.167 0.104 0.0918 0.726 0.452 0.398 1,1,1,2-Tetrachloroethane ND 0.106 0.0918 ND 0.726 0.630 m-/p-Xylenes 0.796 0.106 0.0918 3.45 0.462 0.398 o-Xylene 0.344 0.105 0.0918 1.49 0.456 0.398 Styrene ND 0.103 0.0918 ND 0.438 0.391 Bromoform ND 0.105 0.0918 ND 1.09 0.948 1,1,2,2-Tetrachloroethane 0.250 0.106 0.0918 1.72 0.728 0.630 m 4-Ethyltoluene 0.0972 0.107 0.0918 0.478 0.524 0.451 J, m 2-Chlorotoluene ND 0.106 0.0918 ND 0.548 0.475 1,3,5-Trimethylbenzene 0.197 0.106 0.0918 0.966 0.523 0.451 m EA # 0124-075 Page 31 of 85 Sample Name Sample Info. Sampling Date Received Date Sample Type Batch Data File Dilution Pressurization Factor Acquisition Date Instrument Method Matrix Analyst Instrument Enthalpy ID Target Compound Concentration (ppbv) RL (ppbv) MDL (ppbv) Concentration (ug/m³) RL (ug/m³) MDL (ug/m³) Flags Air KMB Xavier 0124-075.SG-4.Can X2400596.D 1.000 2.623 2024-02-01 22:42 TO15_SCNV6.M 0124-075; 500mL Load; Can #5703/C10119 2024-02-01 10:19 2024-02-01 00:00 Sample Xavier_X020124A_0124-075.v1 Enthalpy Analytical Job No.: 0124-075-1 EPA Method TO-15 Analysis -- Run AECOM - Morrisville 60722767 Frye & Webster DC410064 SG-4 1,2,4-Trimethylbenzene 0.552 0.105 0.0918 2.71 0.516 0.451 1,3-Dichlorobenzene ND 0.107 0.0918 ND 0.640 0.552 1,4-Dichlorobenzene ND 0.105 0.0918 ND 0.633 0.552 Benzyl chloride ND 0.106 0.0918 ND 0.546 0.475 1,2-Dichlorobenzene ND 0.106 0.0918 ND 0.639 0.552 1,2,4-Trichlorobenzene ND 0.104 0.0918 ND 0.775 0.681 Hexachlorobutadiene ND 0.104 0.0918 ND 1.10 0.978 Naphthalene ND 0.106 0.0918 ND 0.553 0.481 1-Bromopropane ND 0.104 0.0918 ND 0.523 0.461 1-Octene 2.03 0.104 0.0918 9.32 0.475 0.421 n-Octane 0.628 0.108 0.0918 2.93 0.505 0.429 Isopropylbenzene 0.184 0.107 0.0918 0.904 0.524 0.451 n-Propylbenzene ND 0.108 0.0918 ND 0.529 0.451 Compound Response Retention Time (min) Concentration (ppbv) Flag Bromochloromethane (IS)714,424 11.02 5.21 pass 1,4-Difluorobenzene (IS)2,710,198 12.44 5.16 pass Chlorobenzene-d5 (IS)2,332,221 16.57 4.92 pass (ND) = Not Detected (J) = Below Calibration Range, (E) = Above Calibration Range, (m) = Manual Integration IS Acceptance Criteria: RT +/- 20 sec, Response +/- 40% EA # 0124-075 Page 32 of 85 Sample Name Sample Info. Sampling Date Received Date Sample Type Batch Data File Dilution Pressurization Factor Acquisition Date Instrument Method Matrix Analyst Instrument Enthalpy ID Target Compound Concentration (ppbv) RL (ppbv) MDL (ppbv) Concentration (ug/m³) RL (ug/m³) MDL (ug/m³) Flags Tetrachloroethene 182 0.537 0.459 1,236 3.64 3.11 Compound Response Retention Time (min) Concentration (ppbv) Flag Bromochloromethane (IS)812,295 11.02 5.21 pass (ND) = Not Detected (J) = Below Calibration Range, (E) = Above Calibration Range, (m) = Manual Integration IS Acceptance Criteria: RT +/- 20 sec, Response +/- 40% Air TDD Xavier 0124-075.SG-4.Can X2400664.D 5.000 2.623 2024-02-06 06:55 TO15_SCNV6.M 0124-075; *5=100mL Load; Can #5703/C10119 2024-02-01 10:19 2024-02-01 00:00 Sample Xavier_X020524A_0124-075.v1 Enthalpy Analytical Job No.: 0124-075-1 EPA Method TO-15 Analysis -- Run AECOM - Morrisville 60722767 Frye & Webster DC410064 SG-4 EA # 0124-075 Page 33 of 85 Job No. Company Site Can Number 12165 6041 13542 11251 5731 5703 Job 0124-075 0124-075 0124-075 0124-075 0124-075 0124-075 Sample ID SG-5 SG-3 SG-2 SG-10 SG-6 SG-4 CleanDate 01/25/2024 01/10/2024 01/18/2024 01/09/2024 01/18/2024 01/09/2024 LeakCheckDate 01/26/2024 01/16/2024 01/23/2024 01/11/2024 01/23/2024 01/11/2024 LeakCheckAnalyst pamooney pamooney pamooney pamooney pamooney pamooney BlankCheckRef Y2400259 Y2400151 Y2400231 Y2400143 Y2400229 Y2400145 Weather Station ID 88 88 88 88 88 88 Weather Station Exp.02/02/2024 02/02/2024 02/02/2024 02/02/2024 02/02/2024 02/02/2024 Transducer ID 3 3 3 3 3 3 Transducer Exp.11/17/2024 11/17/2024 11/17/2024 11/17/2024 11/17/2024 11/17/2024 Can Size (L)1.4 1.4 1.4 1.4 1.4 1.4 Evac Temp (F)65.9 65.9 65.9 65.9 65.9 65.9 Evac Pbar (mmHg)761.0 761.0 761.0 761.0 761.0 761.0 Evac Gauge (mmHg)-761.0 -761.0 -761.0 -761.0 -761.0 -761.0 Evac Analyst pamooney pamooney pamooney pamooney pamooney pamooney Evac Time 01/26/24 08:40 01/25/24 10:35 01/25/24 10:47 01/25/24 10:26 01/25/24 10:21 01/25/24 10:15 Evac Vol (L)0.000 0.000 0.000 0.000 0.000 0.000 Recd. Temp (F)66.7 66.7 66.7 66.7 66.7 66.7 Recd. Pbar (mmHg)757.7 757.7 757.7 757.7 757.7 757.7 Recd. Gauge (mmHg)-143.0 -175.0 -220.0 -209.0 -183.0 -208.0 Recd Vol (L)1.135 1.076 0.993 1.013 1.061 1.015 P1 Temp (F)66.7 66.7 66.7 66.7 66.7 66.7 P1 Pbar (mmHg)757.7 757.7 757.7 757.7 757.7 757.7 P1 Gauge (mmHg)665.0 684.0 692.0 681.0 680.0 684.0 P1 Analyst pamooney pamooney pamooney pamooney pamooney pamooney P1 Time 02/01/24 13:09 02/01/24 13:15 02/01/24 13:19 02/01/24 13:30 02/01/24 13:47 02/01/24 13:51 P1 Fill Gas Nitrogen Nitrogen Nitrogen Nitrogen Nitrogen Nitrogen P1 Vol (L)2.627 2.662 2.677 2.657 2.655 2.662 P1 DF Override false false false false false false P1 Dilution Factor 2.315 2.474 2.696 2.622 2.502 2.623 Enthalpy Analytical -- Canister Pressurization 0124-075 AECOM - Morrisville Frye & Webster DC410064 Canister Pressurization Report 20230531 Report Printed 2/12/2024 12:41:56 PM EA # 0124-075 Page 34 of 85 Job No. Company Site Can Number 12423 13541 Job 0124-075 0124-075 Sample ID SG-1 SG-11 CleanDate 01/17/2024 01/17/2024 LeakCheckDate 01/19/2024 01/19/2024 LeakCheckAnalyst pamooney pamooney BlankCheckRef X2400323 Y2400322 Weather Station ID 88 88 Weather Station Exp.02/02/2024 02/02/2024 Transducer ID 3 3 Transducer Exp.11/17/2024 11/17/2024 Can Size (L)1.4 1.4 Evac Temp (F)65.9 65.9 Evac Pbar (mmHg)761.0 761.0 Evac Gauge (mmHg)-761.0 -761.0 Evac Analyst pamooney pamooney Evac Time 01/25/24 11:03 01/25/24 10:54 Evac Vol (L)0.000 0.000 Recd. Temp (F)66.7 66.7 Recd. Pbar (mmHg)757.7 757.7 Recd. Gauge (mmHg)-195.0 -258.0 Recd Vol (L)1.039 0.923 P1 Temp (F)66.7 66.7 P1 Pbar (mmHg)757.7 757.7 P1 Gauge (mmHg)745.0 686.0 P1 Analyst pamooney pamooney P1 Time 02/01/24 13:27 02/01/24 13:34 P1 Fill Gas Nitrogen Nitrogen P1 Vol (L)2.775 2.666 P1 DF Override false false P1 Dilution Factor 2.671 2.889 Mid 1-2 Temp (F)67.0 67.0 Mid 1-2 Pbar (mmHg)763.3 756.3 Mid 1-2 Gauge (mmHg)397.2 354.0 Mid 1-2 Vol (L)2.142 2.049 P2 Temp (F)67.0 67.0 P2 Pbar (mmHg)763.3 756.3 P2 Gauge (mmHg)873.7 823.0 P2 Analyst pamooney pamooney P2 Time 02/07/24 08:54 02/07/24 08:46 P2 FillGas Nitrogen Nitrogen P2 Vol (L)3.021 2.915 P2 Dilution Factor 3.767 4.110 Enthalpy Analytical -- Canister Pressurization 0124-075 AECOM - Morrisville Frye & Webster DC410064 Canister Pressurization Report 20230531 Report Printed 2/12/2024 12:41:56 PM EA # 0124-075 Page 35 of 85 Lab QC EA # 0124-075 Page 36 of 85 Sample Name Sample Info. Sampling Date Received Date Sample Type Batch Data File Dilution Pressurization Factor Acquisition Date Instrument Method Matrix Parent Enthalpy ID Target Compound Parent Conc (ppbv) Concentration (ppbv) RL (ppbv) MDL (ppbv) Concentration (ug/m³) RL (ug/m³) Dup Diff (%) Flags Propylene 130 124 15.9 14.4 214 27.3 4.5 pass Freon 12 (CCl2F2)ND ND 16.1 14.4 ND 79.5 Freon 114 (C2Cl2F4)ND ND 16.5 14.4 ND 115 Chloromethane ND ND 16.3 14.4 ND 33.6 Chloroethene (Vinyl chloride)420 401 16.4 14.4 1,024 42.0 4.6 pass, m 1,3-Butadiene ND ND 16.0 14.4 ND 35.4 Bromomethane ND ND 16.1 14.4 ND 62.6 Chloroethane ND ND 16.7 14.4 ND 44.0 Bromoethene (Vinyl bromide)ND ND 16.1 14.4 ND 70.3 Freon 11 (CCl3F)ND ND 17.3 14.4 ND 97.4 Ethanol 19.9 ND 16.3 16.3 ND 30.7 Acrolein ND ND 16.2 14.4 ND 37.1 Freon 113 (C2Cl3F3)ND ND 16.7 14.4 ND 128 1,1-Dichloroethene 489 480 16.5 14.4 1,902 65.5 1.9 pass Acetone 2,055 1,857 16.5 14.4 4,409 39.1 10.1 pass Carbon disulfide 22.5 22.1 16.4 14.4 68.9 51.0 1.8 pass, m Isopropyl alcohol ND ND 16.4 14.4 ND 40.3 Allyl chloride (3-chloropropene)ND ND 17.8 14.4 ND 55.5 Acetonitrile ND ND 16.4 14.4 ND 27.5 Methylene chloride 34.2 28.7 16.8 14.4 99.6 58.4 17.6 pass, m trans-1,2-Dichloroethene 111 100 16.8 14.4 397 66.4 9.8 pass Methyl tert-butyl ether ND ND 16.9 14.4 ND 60.9 Acrylonitrile 472 477 16.7 14.4 1,035 36.3 1.2 pass Hexane 4,497 4,236 16.7 14.4 14,922 58.8 6.0 pass 1,1-Dichloroethane ND ND 16.3 14.4 ND 66.0 Vinyl acetate ND ND 16.8 14.4 ND 59.2 Methyl ethyl ketone (2-Butanone)ND ND 17.0 14.4 ND 50.1 Ethyl acetate ND ND 16.4 14.4 ND 59.1 Chloroform 133 127 16.5 14.4 618 80.5 5.0 pass Tetrahydrofuran ND ND 16.6 14.4 ND 49.0 1,1,1-Trichloroethane ND ND 16.6 14.4 ND 90.5 Cyclohexane 5,347 5,023 16.8 14.4 17,280 58.0 6.2 pass Carbon tetrachloride ND ND 16.6 14.4 ND 104 Benzene 43.1 42.2 16.5 14.4 135 52.8 2.3 pass 2,2,4-trimethylpentane 213 208 17.0 14.4 970 79.4 2.4 pass, m 1,2-Dichloroethane ND ND 16.9 14.4 ND 68.4 Heptane 2,124 2,010 16.7 14.4 8,233 68.2 5.5 pass 1,2-Dichloropropane 320 324 16.6 14.4 1,499 76.4 1.5 pass, m Methyl methacrylate 8,721 8,730 17.2 14.4 35,725 70.4 0.1 pass 1,4-Dioxane ND ND 16.5 14.4 ND 59.4 Bromodichloromethane ND ND 16.6 14.4 ND 111 cis-1,3-Dichloropropene ND ND 16.3 14.4 ND 74.0 96.3 65.2 58.2 58.9 66.4 58.9 51.8 78.4 49.5 90.4 45.9 67.2 50.6 42.4 51.8 70.2 42.4 57.0 51.8 31.2 50.7 58.2 44.8 35.3 45.0 24.1 49.9 30.7 33.0 110 57.0 34.1 31.8 55.8 37.9 62.9 80.8 24.7 71.1 100 29.7 36.7 Air 0124-075.SG-11.CanP2 0124-075.SG-11.LDP2 MDL (ug/m³) X2400742.D 100.000 4.110 2024-02-09 08:15 TO15_SCNV6.M 0124-075; *100=5mL load (2nd TP); Can #13541; MP2 2024-01-31 14:52 2024-02-01 00:00 LabDup Xavier_X020924A_0124-075.v2 Enthalpy Analytical Job No.: 0124-075-1 EPA Method TO-15 Analysis -- Run AECOM - Morrisville 60722767 Frye & Webster DC410064 0124-075.SG-11.LDP2 EA # 0124-075 Page 37 of 85 Sample Name Sample Info. Sampling Date Received Date Sample Type Batch Data File Dilution Pressurization Factor Acquisition Date Instrument Method Matrix Parent Enthalpy ID Target Compound Parent Conc (ppbv) Concentration (ppbv) RL (ppbv) MDL (ppbv) Concentration (ug/m³) RL (ug/m³) Dup Diff (%) Flags Air 0124-075.SG-11.CanP2 0124-075.SG-11.LDP2 MDL (ug/m³) X2400742.D 100.000 4.110 2024-02-09 08:15 TO15_SCNV6.M 0124-075; *100=5mL load (2nd TP); Can #13541; MP2 2024-01-31 14:52 2024-02-01 00:00 LabDup Xavier_X020924A_0124-075.v2 Enthalpy Analytical Job No.: 0124-075-1 EPA Method TO-15 Analysis -- Run AECOM - Morrisville 60722767 Frye & Webster DC410064 0124-075.SG-11.LDP2 Methyl isobutyl ketone 301 215 17.1 14.4 879 69.9 33.4 fail, m Toluene ND ND 16.7 14.4 ND 63.0 trans-1,3-Dichloropropene ND ND 17.0 14.4 ND 76.9 1,1,2-Trichloroethane ND ND 16.7 14.4 ND 91.2 2-Hexanone (Methyl butyl ketone)4,738 4,730 16.8 14.4 19,366 68.8 0.2 pass, m Dibromochloromethane ND ND 16.6 14.4 ND 141 1,2-Dibromoethane ND ND 16.8 14.4 ND 129 Chlorobenzene 21.5 19.1 16.9 14.4 87.9 77.9 11.8 pass Ethylbenzene 502 498 16.3 14.4 2,159 70.8 0.9 pass 1,1,1,2-Tetrachloroethane ND ND 16.6 14.4 ND 114 m-/p-Xylenes 73.1 71.7 16.7 14.4 311 72.3 1.9 pass, m o-Xylene ND ND 16.5 14.4 ND 71.5 Styrene ND ND 16.1 14.4 ND 68.6 Bromoform ND ND 16.5 14.4 ND 170 1,1,2,2-Tetrachloroethane 897 840 16.6 14.4 5,763 114 6.6 pass, m 4-Ethyltoluene 642 625 16.7 14.4 3,072 82.1 2.6 pass, m 2-Chlorotoluene ND ND 16.6 14.4 ND 85.8 1,3,5-Trimethylbenzene 407 390 16.7 14.4 1,916 81.9 4.3 pass 1,2,4-Trimethylbenzene 1,853 1,748 16.5 14.4 8,587 80.8 5.8 pass 1,3-Dichlorobenzene ND ND 16.7 14.4 ND 100 1,4-Dichlorobenzene ND ND 16.5 14.4 ND 99.3 Benzyl chloride 284 278 16.5 14.4 1,439 85.6 1.9 pass, m 1,2-Dichlorobenzene ND ND 16.7 14.4 ND 100 1,2,4-Trichlorobenzene ND ND 16.4 14.4 ND 121 Hexachlorobutadiene ND ND 16.2 14.4 ND 173 Naphthalene ND ND 16.6 14.4 ND 86.7 1-Bromopropane ND ND 16.3 14.4 ND 82.0 1-Octene 2,281 2,491 16.2 14.4 11,425 74.4 8.8 pass n-Octane 1,675 1,725 16.9 14.4 8,054 79.1 2.9 pass Isopropylbenzene 544 548 16.7 14.4 2,691 82.0 0.7 pass n-Propylbenzene 1,164 1,145 16.9 14.4 5,624 82.9 1.7 pass Compound Response Retention Time (min) Concentration (ppbv) Flag Bromochloromethane (IS)874,856 11.02 5.21 pass 1,4-Difluorobenzene (IS)3,273,784 12.44 5.16 pass Chlorobenzene-d5 (IS)3,030,112 16.58 4.92 pass (ND) = Not Detected (J) = Below Calibration Range, (E) = Above Calibration Range, (m) = Manual Integration IS Acceptance Criteria: RT +/- 20 sec, Response +/- 40% 67.2 70.7 70.7 107 153 75.4 72.3 66.0 70.7 86.4 86.4 74.4 86.4 149 98.7 70.7 74.4 70.7 62.4 98.7 62.4 62.4 61.2 78.4 58.9 122 110 66.2 58.9 54.2 65.2 EA # 0124-075 Page 38 of 85 Sample Name Sample Info. Sample Type Batch Data File Dilution Pressurization Factor Acquisition Date Instrument Method Matrix Analyst Instrument Enthalpy ID Target Compound Concentration (ppbv) RL (ppbv) MDL (ppbv) Concentration (ug/m³) RL (ug/m³) MDL (ug/m³) Flags Propylene ND 0.0386 0.0350 ND 0.0665 0.0602 pass Freon 12 (CCl2F2)ND 0.0392 0.0350 ND 0.194 0.173 pass Freon 114 (C2Cl2F4)ND 0.0401 0.0350 ND 0.280 0.245 pass Chloromethane ND 0.0396 0.0350 ND 0.0816 0.0722 pass Chloroethene (Vinyl chloride)ND 0.0400 0.0350 ND 0.102 0.0894 pass 1,3-Butadiene ND 0.0389 0.0350 ND 0.0860 0.0774 pass Bromomethane ND 0.0392 0.0350 ND 0.152 0.136 pass Chloroethane ND 0.0406 0.0350 ND 0.107 0.0923 pass Bromoethene (Vinyl bromide)ND 0.0391 0.0350 ND 0.171 0.153 pass Freon 11 (CCl3F)ND 0.0422 0.0350 ND 0.237 0.197 pass Ethanol 0.0585 0.0396 0.0396 0.110 0.0746 0.0746 pass Acrolein ND 0.0394 0.0350 ND 0.0903 0.0802 pass Freon 113 (C2Cl3F3)ND 0.0406 0.0350 ND 0.311 0.268 pass 1,1-Dichloroethene ND 0.0402 0.0350 ND 0.159 0.139 pass Acetone ND 0.0401 0.0350 ND 0.0951 0.0831 pass Carbon disulfide ND 0.0399 0.0350 ND 0.124 0.109 pass Isopropyl alcohol ND 0.0399 0.0350 ND 0.0980 0.0860 pass Allyl chloride (3-chloropropene)ND 0.0432 0.0350 ND 0.135 0.109 pass Acetonitrile ND 0.0399 0.0350 ND 0.0669 0.0587 pass Methylene chloride ND 0.0410 0.0350 ND 0.142 0.122 pass trans-1,2-Dichloroethene ND 0.0408 0.0350 ND 0.162 0.139 pass Methyl tert-butyl ether ND 0.0411 0.0350 ND 0.148 0.126 pass Acrylonitrile ND 0.0407 0.0350 ND 0.0883 0.0759 pass Hexane ND 0.0406 0.0350 ND 0.143 0.123 pass 1,1-Dichloroethane ND 0.0397 0.0350 ND 0.161 0.142 pass Vinyl acetate ND 0.0409 0.0350 ND 0.144 0.123 pass cis-1,2-Dichloroethene ND 0.0404 0.0350 ND 0.160 0.139 pass Methyl ethyl ketone (2-Butanone)ND 0.0414 0.0350 ND 0.122 0.103 pass Ethyl acetate ND 0.0399 0.0350 ND 0.144 0.126 pass Chloroform ND 0.0401 0.0350 ND 0.196 0.171 pass Tetrahydrofuran ND 0.0405 0.0350 ND 0.119 0.103 pass 1,1,1-Trichloroethane ND 0.0404 0.0350 ND 0.220 0.191 pass Cyclohexane ND 0.0410 0.0350 ND 0.141 0.120 pass Xavier X020124A_Humid Blank #0702 1.000 2024-02-01 15:28 TO15_SCNV6.M Air KMB 500mL load Blank Xavier_X020124A_0124-075.v1 X2400588.D 1.000 Enthalpy Analytical Job No.: 0124-075-1 EPA Method TO-15 Analysis -- Run AECOM - Morrisville 60722767 Frye & Webster DC410064 X020124A_Humid Blank #0702 EA # 0124-075 Page 39 of 85 Sample Name Sample Info. Sample Type Batch Data File Dilution Pressurization Factor Acquisition Date Instrument Method Matrix Analyst Instrument Enthalpy ID Target Compound Concentration (ppbv) RL (ppbv) MDL (ppbv) Concentration (ug/m³) RL (ug/m³) MDL (ug/m³) Flags Xavier X020124A_Humid Blank #0702 1.000 2024-02-01 15:28 TO15_SCNV6.M Air KMB 500mL load Blank Xavier_X020124A_0124-075.v1 X2400588.D 1.000 Enthalpy Analytical Job No.: 0124-075-1 EPA Method TO-15 Analysis -- Run AECOM - Morrisville 60722767 Frye & Webster DC410064 X020124A_Humid Blank #0702 Carbon tetrachloride ND 0.0403 0.0350 ND 0.253 0.220 pass Benzene ND 0.0402 0.0350 ND 0.128 0.112 pass 2,2,4-trimethylpentane ND 0.0414 0.0350 ND 0.193 0.163 pass 1,2-Dichloroethane ND 0.0412 0.0350 ND 0.166 0.142 pass Heptane ND 0.0405 0.0350 ND 0.166 0.143 pass Trichloroethene ND 0.0404 0.0350 ND 0.217 0.188 pass 1,2-Dichloropropane ND 0.0403 0.0350 ND 0.186 0.162 pass Methyl methacrylate ND 0.0419 0.0350 ND 0.171 0.143 pass 1,4-Dioxane ND 0.0401 0.0350 ND 0.144 0.126 pass Bromodichloromethane ND 0.0404 0.0350 ND 0.271 0.234 pass cis-1,3-Dichloropropene ND 0.0397 0.0350 ND 0.180 0.159 pass Methyl isobutyl ketone ND 0.0416 0.0350 ND 0.170 0.143 pass Toluene ND 0.0407 0.0350 ND 0.153 0.132 pass trans-1,3-Dichloropropene ND 0.0413 0.0350 ND 0.187 0.159 pass 1,1,2-Trichloroethane ND 0.0407 0.0350 ND 0.222 0.191 pass Tetrachloroethene ND 0.0409 0.0350 ND 0.277 0.237 pass 2-Hexanone (Methyl butyl ketone)ND 0.0409 0.0350 ND 0.168 0.143 pass Dibromochloromethane ND 0.0403 0.0350 ND 0.343 0.298 pass 1,2-Dibromoethane ND 0.0409 0.0350 ND 0.314 0.269 pass Chlorobenzene ND 0.0412 0.0350 ND 0.190 0.161 pass Ethylbenzene ND 0.0397 0.0350 ND 0.172 0.152 pass 1,1,1,2-Tetrachloroethane ND 0.0403 0.0350 ND 0.277 0.240 pass m-/p-Xylenes ND 0.0406 0.0350 ND 0.176 0.152 pass o-Xylene ND 0.0401 0.0350 ND 0.174 0.152 pass Styrene ND 0.0392 0.0350 ND 0.167 0.149 pass Bromoform ND 0.0401 0.0350 ND 0.414 0.362 pass 1,1,2,2-Tetrachloroethane ND 0.0404 0.0350 ND 0.277 0.240 pass 4-Ethyltoluene ND 0.0407 0.0350 ND 0.200 0.172 pass 2-Chlorotoluene ND 0.0404 0.0350 ND 0.209 0.181 pass 1,3,5-Trimethylbenzene ND 0.0406 0.0350 ND 0.199 0.172 pass 1,2,4-Trimethylbenzene ND 0.0400 0.0350 ND 0.197 0.172 pass 1,3-Dichlorobenzene ND 0.0406 0.0350 ND 0.244 0.210 pass 1,4-Dichlorobenzene ND 0.0402 0.0350 ND 0.242 0.210 pass EA # 0124-075 Page 40 of 85 Sample Name Sample Info. Sample Type Batch Data File Dilution Pressurization Factor Acquisition Date Instrument Method Matrix Analyst Instrument Enthalpy ID Target Compound Concentration (ppbv) RL (ppbv) MDL (ppbv) Concentration (ug/m³) RL (ug/m³) MDL (ug/m³) Flags Xavier X020124A_Humid Blank #0702 1.000 2024-02-01 15:28 TO15_SCNV6.M Air KMB 500mL load Blank Xavier_X020124A_0124-075.v1 X2400588.D 1.000 Enthalpy Analytical Job No.: 0124-075-1 EPA Method TO-15 Analysis -- Run AECOM - Morrisville 60722767 Frye & Webster DC410064 X020124A_Humid Blank #0702 Benzyl chloride ND 0.0402 0.0350 ND 0.208 0.181 pass 1,2-Dichlorobenzene ND 0.0405 0.0350 ND 0.243 0.210 pass 1,2,4-Trichlorobenzene ND 0.0398 0.0350 ND 0.295 0.260 pass Hexachlorobutadiene ND 0.0395 0.0350 ND 0.421 0.373 pass Naphthalene ND 0.0403 0.0350 ND 0.211 0.183 pass 1-Bromopropane ND 0.0397 0.0350 ND 0.199 0.176 pass 1-Octene ND 0.0395 0.0350 ND 0.181 0.161 pass n-Octane ND 0.0412 0.0350 ND 0.192 0.163 pass Isopropylbenzene ND 0.0406 0.0350 ND 0.200 0.172 pass n-Propylbenzene ND 0.0410 0.0350 ND 0.202 0.172 pass Compound Response Retention Time (min) Concentration (ppbv) Flag Bromochloromethane (IS)865,573 11.02 5.21 pass 1,4-Difluorobenzene (IS)3,356,893 12.44 5.16 pass Chlorobenzene-d5 (IS)2,937,742 16.57 4.92 pass (ND) = Not Detected (J) = Below Calibration Range, (E) = Above Calibration Range, (m) = Manual Integration IS Acceptance Criteria: RT +/- 20 sec, Response +/- 40% EA # 0124-075 Page 41 of 85 Sample Name Sample Info. Sample Type Batch Data File Dilution Pressurization Factor Acquisition Date Instrument Method Matrix Analyst Instrument Enthalpy ID Target Compound Concentration (ppbv) RL (ppbv) MDL (ppbv) Concentration (ug/m³) RL (ug/m³) MDL (ug/m³) Flags Propylene ND 0.0386 0.0350 ND 0.0665 0.0602 pass Freon 12 (CCl2F2)ND 0.0392 0.0350 ND 0.194 0.173 pass Freon 114 (C2Cl2F4)ND 0.0401 0.0350 ND 0.280 0.245 pass Chloromethane ND 0.0396 0.0350 ND 0.0816 0.0722 pass Chloroethene (Vinyl chloride)ND 0.0400 0.0350 ND 0.102 0.0894 pass 1,3-Butadiene ND 0.0389 0.0350 ND 0.0860 0.0774 pass Bromomethane ND 0.0392 0.0350 ND 0.152 0.136 pass Chloroethane ND 0.0406 0.0350 ND 0.107 0.0923 pass Bromoethene (Vinyl bromide)ND 0.0391 0.0350 ND 0.171 0.153 pass Freon 11 (CCl3F)ND 0.0422 0.0350 ND 0.237 0.197 pass Ethanol 0.0526 0.0396 0.0396 0.0991 0.0746 0.0746 pass Acrolein ND 0.0394 0.0350 ND 0.0903 0.0802 pass Freon 113 (C2Cl3F3)ND 0.0406 0.0350 ND 0.311 0.268 pass 1,1-Dichloroethene ND 0.0402 0.0350 ND 0.159 0.139 pass Acetone ND 0.0401 0.0350 ND 0.0951 0.0831 pass Carbon disulfide ND 0.0399 0.0350 ND 0.124 0.109 pass Isopropyl alcohol ND 0.0399 0.0350 ND 0.0980 0.0860 pass Allyl chloride (3-chloropropene)ND 0.0432 0.0350 ND 0.135 0.109 pass Acetonitrile ND 0.0399 0.0350 ND 0.0669 0.0587 pass Methylene chloride ND 0.0410 0.0350 ND 0.142 0.122 pass trans-1,2-Dichloroethene ND 0.0408 0.0350 ND 0.162 0.139 pass Methyl tert-butyl ether ND 0.0411 0.0350 ND 0.148 0.126 pass Acrylonitrile ND 0.0407 0.0350 ND 0.0883 0.0759 pass Hexane ND 0.0406 0.0350 ND 0.143 0.123 pass 1,1-Dichloroethane ND 0.0397 0.0350 ND 0.161 0.142 pass Vinyl acetate ND 0.0409 0.0350 ND 0.144 0.123 pass cis-1,2-Dichloroethene ND 0.0404 0.0350 ND 0.160 0.139 pass Methyl ethyl ketone (2-Butanone)ND 0.0414 0.0350 ND 0.122 0.103 pass Ethyl acetate ND 0.0399 0.0350 ND 0.144 0.126 pass Chloroform ND 0.0401 0.0350 ND 0.196 0.171 pass Tetrahydrofuran ND 0.0405 0.0350 ND 0.119 0.103 pass 1,1,1-Trichloroethane ND 0.0404 0.0350 ND 0.220 0.191 pass Cyclohexane ND 0.0410 0.0350 ND 0.141 0.120 pass Xavier X020524A_Humid Blank #0702 1.000 2024-02-05 19:04 TO15_SCNV6.M Air TDD 500mL load Blank Xavier_X020524A_0124-075.v1 X2400653.D 1.000 Enthalpy Analytical Job No.: 0124-075-1 EPA Method TO-15 Analysis -- Run AECOM - Morrisville 60722767 Frye & Webster DC410064 X020524A_Humid Blank #0702 EA # 0124-075 Page 42 of 85 Sample Name Sample Info. Sample Type Batch Data File Dilution Pressurization Factor Acquisition Date Instrument Method Matrix Analyst Instrument Enthalpy ID Target Compound Concentration (ppbv) RL (ppbv) MDL (ppbv) Concentration (ug/m³) RL (ug/m³) MDL (ug/m³) Flags Xavier X020524A_Humid Blank #0702 1.000 2024-02-05 19:04 TO15_SCNV6.M Air TDD 500mL load Blank Xavier_X020524A_0124-075.v1 X2400653.D 1.000 Enthalpy Analytical Job No.: 0124-075-1 EPA Method TO-15 Analysis -- Run AECOM - Morrisville 60722767 Frye & Webster DC410064 X020524A_Humid Blank #0702 Carbon tetrachloride ND 0.0403 0.0350 ND 0.253 0.220 pass Benzene ND 0.0402 0.0350 ND 0.128 0.112 pass 2,2,4-trimethylpentane ND 0.0414 0.0350 ND 0.193 0.163 pass 1,2-Dichloroethane ND 0.0412 0.0350 ND 0.166 0.142 pass Heptane ND 0.0405 0.0350 ND 0.166 0.143 pass Trichloroethene ND 0.0404 0.0350 ND 0.217 0.188 pass 1,2-Dichloropropane ND 0.0403 0.0350 ND 0.186 0.162 pass Methyl methacrylate ND 0.0419 0.0350 ND 0.171 0.143 pass 1,4-Dioxane ND 0.0401 0.0350 ND 0.144 0.126 pass Bromodichloromethane ND 0.0404 0.0350 ND 0.271 0.234 pass cis-1,3-Dichloropropene ND 0.0397 0.0350 ND 0.180 0.159 pass Methyl isobutyl ketone ND 0.0416 0.0350 ND 0.170 0.143 pass Toluene ND 0.0407 0.0350 ND 0.153 0.132 pass trans-1,3-Dichloropropene ND 0.0413 0.0350 ND 0.187 0.159 pass 1,1,2-Trichloroethane ND 0.0407 0.0350 ND 0.222 0.191 pass Tetrachloroethene ND 0.0409 0.0350 ND 0.277 0.237 pass 2-Hexanone (Methyl butyl ketone)ND 0.0409 0.0350 ND 0.168 0.143 pass Dibromochloromethane ND 0.0403 0.0350 ND 0.343 0.298 pass 1,2-Dibromoethane ND 0.0409 0.0350 ND 0.314 0.269 pass Chlorobenzene ND 0.0412 0.0350 ND 0.190 0.161 pass Ethylbenzene ND 0.0397 0.0350 ND 0.172 0.152 pass 1,1,1,2-Tetrachloroethane ND 0.0403 0.0350 ND 0.277 0.240 pass m-/p-Xylenes ND 0.0406 0.0350 ND 0.176 0.152 pass o-Xylene ND 0.0401 0.0350 ND 0.174 0.152 pass Styrene ND 0.0392 0.0350 ND 0.167 0.149 pass Bromoform ND 0.0401 0.0350 ND 0.414 0.362 pass 1,1,2,2-Tetrachloroethane ND 0.0404 0.0350 ND 0.277 0.240 pass 4-Ethyltoluene ND 0.0407 0.0350 ND 0.200 0.172 pass 2-Chlorotoluene ND 0.0404 0.0350 ND 0.209 0.181 pass 1,3,5-Trimethylbenzene ND 0.0406 0.0350 ND 0.199 0.172 pass 1,2,4-Trimethylbenzene ND 0.0400 0.0350 ND 0.197 0.172 pass 1,3-Dichlorobenzene ND 0.0406 0.0350 ND 0.244 0.210 pass 1,4-Dichlorobenzene ND 0.0402 0.0350 ND 0.242 0.210 pass EA # 0124-075 Page 43 of 85 Sample Name Sample Info. Sample Type Batch Data File Dilution Pressurization Factor Acquisition Date Instrument Method Matrix Analyst Instrument Enthalpy ID Target Compound Concentration (ppbv) RL (ppbv) MDL (ppbv) Concentration (ug/m³) RL (ug/m³) MDL (ug/m³) Flags Xavier X020524A_Humid Blank #0702 1.000 2024-02-05 19:04 TO15_SCNV6.M Air TDD 500mL load Blank Xavier_X020524A_0124-075.v1 X2400653.D 1.000 Enthalpy Analytical Job No.: 0124-075-1 EPA Method TO-15 Analysis -- Run AECOM - Morrisville 60722767 Frye & Webster DC410064 X020524A_Humid Blank #0702 Benzyl chloride ND 0.0402 0.0350 ND 0.208 0.181 pass 1,2-Dichlorobenzene ND 0.0405 0.0350 ND 0.243 0.210 pass 1,2,4-Trichlorobenzene ND 0.0398 0.0350 ND 0.295 0.260 pass Hexachlorobutadiene ND 0.0395 0.0350 ND 0.421 0.373 pass Naphthalene ND 0.0403 0.0350 ND 0.211 0.183 pass 1-Bromopropane ND 0.0397 0.0350 ND 0.199 0.176 pass 1-Octene ND 0.0395 0.0350 ND 0.181 0.161 pass n-Octane ND 0.0412 0.0350 ND 0.192 0.163 pass Isopropylbenzene ND 0.0406 0.0350 ND 0.200 0.172 pass n-Propylbenzene ND 0.0410 0.0350 ND 0.202 0.172 pass Compound Response Retention Time (min) Concentration (ppbv) Flag Bromochloromethane (IS)855,401 11.02 5.21 pass 1,4-Difluorobenzene (IS)3,291,931 12.44 5.16 pass Chlorobenzene-d5 (IS)2,893,110 16.57 4.92 pass (ND) = Not Detected (J) = Below Calibration Range, (E) = Above Calibration Range, (m) = Manual Integration IS Acceptance Criteria: RT +/- 20 sec, Response +/- 40% EA # 0124-075 Page 44 of 85 Sample Name Sample Info. Sample Type Batch Data File Dilution Pressurization Factor Acquisition Date Instrument Method Matrix Analyst Instrument Enthalpy ID Target Compound Concentration (ppbv) RL (ppbv) MDL (ppbv) Concentration (ug/m³) RL (ug/m³) MDL (ug/m³) Flags cis-1,2-Dichloroethene ND 0.0404 0.0350 ND 0.160 0.139 pass Trichloroethene ND 0.0404 0.0350 ND 0.217 0.188 pass Tetrachloroethene ND 0.0409 0.0350 ND 0.277 0.237 pass Compound Response Retention Time (min) Concentration (ppbv) Flag Bromochloromethane (IS)851,211 11.02 5.21 pass 1,4-Difluorobenzene (IS)3,308,570 12.44 5.16 pass Chlorobenzene-d5 (IS)2,889,606 16.57 4.92 pass Xavier X020624A_Humid Blank #0702 (ND) = Not Detected (J) = Below Calibration Range, (E) = Above Calibration Range, (m) = Manual Integration IS Acceptance Criteria: RT +/- 20 sec, Response +/- 40% 1.000 2024-02-06 16:11 TO15_SCNV6.M Air TDD 500mL load Blank Xavier_X020624A_0124-075.v1 X2400675.D 1.000 Enthalpy Analytical Job No.: 0124-075-1 EPA Method TO-15 Analysis -- Run AECOM - Morrisville 60722767 Frye & Webster DC410064 X020624A_Humid Blank #0702 EA # 0124-075 Page 45 of 85 Sample Name Sample Info. Sample Type Batch Data File Dilution Pressurization Factor Acquisition Date Instrument Method Matrix Analyst Instrument Enthalpy ID Target Compound Concentration (ppbv) RL (ppbv) MDL (ppbv) Concentration (ug/m³) RL (ug/m³) MDL (ug/m³) Flags Propylene ND 0.0386 0.0350 ND 0.0665 0.0602 pass Freon 12 (CCl2F2)ND 0.0392 0.0350 ND 0.194 0.173 pass Freon 114 (C2Cl2F4)ND 0.0401 0.0350 ND 0.280 0.245 pass Chloromethane ND 0.0396 0.0350 ND 0.0816 0.0722 pass Chloroethene (Vinyl chloride)ND 0.0400 0.0350 ND 0.102 0.0894 pass 1,3-Butadiene ND 0.0389 0.0350 ND 0.0860 0.0774 pass Bromomethane ND 0.0392 0.0350 ND 0.152 0.136 pass Chloroethane ND 0.0406 0.0350 ND 0.107 0.0923 pass Bromoethene (Vinyl bromide)ND 0.0391 0.0350 ND 0.171 0.153 pass Freon 11 (CCl3F)ND 0.0422 0.0350 ND 0.237 0.197 pass Ethanol 0.0469 0.0396 0.0396 0.0883 0.0746 0.0746 pass Acrolein ND 0.0394 0.0350 ND 0.0903 0.0802 pass Freon 113 (C2Cl3F3)ND 0.0406 0.0350 ND 0.311 0.268 pass 1,1-Dichloroethene ND 0.0402 0.0350 ND 0.159 0.139 pass Acetone 0.0364 0.0401 0.0350 0.0864 0.0951 0.0831 pass, J Carbon disulfide ND 0.0399 0.0350 ND 0.124 0.109 pass Isopropyl alcohol ND 0.0399 0.0350 ND 0.0980 0.0860 pass Allyl chloride (3-chloropropene)ND 0.0432 0.0350 ND 0.135 0.109 pass Acetonitrile ND 0.0399 0.0350 ND 0.0669 0.0587 pass Methylene chloride ND 0.0410 0.0350 ND 0.142 0.122 pass trans-1,2-Dichloroethene ND 0.0408 0.0350 ND 0.162 0.139 pass Methyl tert-butyl ether ND 0.0411 0.0350 ND 0.148 0.126 pass Acrylonitrile ND 0.0407 0.0350 ND 0.0883 0.0759 pass Hexane ND 0.0406 0.0350 ND 0.143 0.123 pass 1,1-Dichloroethane ND 0.0397 0.0350 ND 0.161 0.142 pass Vinyl acetate ND 0.0409 0.0350 ND 0.144 0.123 pass cis-1,2-Dichloroethene ND 0.0404 0.0350 ND 0.160 0.139 pass Methyl ethyl ketone (2-Butanone)ND 0.0414 0.0350 ND 0.122 0.103 pass Ethyl acetate ND 0.0399 0.0350 ND 0.144 0.126 pass Chloroform ND 0.0401 0.0350 ND 0.196 0.171 pass Tetrahydrofuran ND 0.0405 0.0350 ND 0.119 0.103 pass 1,1,1-Trichloroethane ND 0.0404 0.0350 ND 0.220 0.191 pass Cyclohexane ND 0.0410 0.0350 ND 0.141 0.120 pass Xavier X020724A_Humid Blank #0702 1.000 2024-02-07 16:27 TO15_SCNV6.M Air TDD 500mL load Blank Xavier_X020724A_0124-075.v1 X2400699.D 1.000 Enthalpy Analytical Job No.: 0124-075-1 EPA Method TO-15 Analysis -- Run AECOM - Morrisville 60722767 Frye & Webster DC410064 X020724A_Humid Blank #0702 EA # 0124-075 Page 46 of 85 Sample Name Sample Info. Sample Type Batch Data File Dilution Pressurization Factor Acquisition Date Instrument Method Matrix Analyst Instrument Enthalpy ID Target Compound Concentration (ppbv) RL (ppbv) MDL (ppbv) Concentration (ug/m³) RL (ug/m³) MDL (ug/m³) Flags Xavier X020724A_Humid Blank #0702 1.000 2024-02-07 16:27 TO15_SCNV6.M Air TDD 500mL load Blank Xavier_X020724A_0124-075.v1 X2400699.D 1.000 Enthalpy Analytical Job No.: 0124-075-1 EPA Method TO-15 Analysis -- Run AECOM - Morrisville 60722767 Frye & Webster DC410064 X020724A_Humid Blank #0702 Carbon tetrachloride ND 0.0403 0.0350 ND 0.253 0.220 pass Benzene ND 0.0402 0.0350 ND 0.128 0.112 pass 2,2,4-trimethylpentane ND 0.0414 0.0350 ND 0.193 0.163 pass 1,2-Dichloroethane ND 0.0412 0.0350 ND 0.166 0.142 pass Heptane ND 0.0405 0.0350 ND 0.166 0.143 pass Trichloroethene ND 0.0404 0.0350 ND 0.217 0.188 pass 1,2-Dichloropropane ND 0.0403 0.0350 ND 0.186 0.162 pass Methyl methacrylate ND 0.0419 0.0350 ND 0.171 0.143 pass 1,4-Dioxane ND 0.0401 0.0350 ND 0.144 0.126 pass Bromodichloromethane ND 0.0404 0.0350 ND 0.271 0.234 pass cis-1,3-Dichloropropene ND 0.0397 0.0350 ND 0.180 0.159 pass Methyl isobutyl ketone ND 0.0416 0.0350 ND 0.170 0.143 pass Toluene ND 0.0407 0.0350 ND 0.153 0.132 pass trans-1,3-Dichloropropene ND 0.0413 0.0350 ND 0.187 0.159 pass 1,1,2-Trichloroethane ND 0.0407 0.0350 ND 0.222 0.191 pass Tetrachloroethene ND 0.0409 0.0350 ND 0.277 0.237 pass 2-Hexanone (Methyl butyl ketone)ND 0.0409 0.0350 ND 0.168 0.143 pass Dibromochloromethane ND 0.0403 0.0350 ND 0.343 0.298 pass 1,2-Dibromoethane ND 0.0409 0.0350 ND 0.314 0.269 pass Chlorobenzene ND 0.0412 0.0350 ND 0.190 0.161 pass Ethylbenzene ND 0.0397 0.0350 ND 0.172 0.152 pass 1,1,1,2-Tetrachloroethane ND 0.0403 0.0350 ND 0.277 0.240 pass m-/p-Xylenes ND 0.0406 0.0350 ND 0.176 0.152 pass o-Xylene ND 0.0401 0.0350 ND 0.174 0.152 pass Styrene ND 0.0392 0.0350 ND 0.167 0.149 pass Bromoform ND 0.0401 0.0350 ND 0.414 0.362 pass 1,1,2,2-Tetrachloroethane ND 0.0404 0.0350 ND 0.277 0.240 pass 4-Ethyltoluene ND 0.0407 0.0350 ND 0.200 0.172 pass 2-Chlorotoluene ND 0.0404 0.0350 ND 0.209 0.181 pass 1,3,5-Trimethylbenzene ND 0.0406 0.0350 ND 0.199 0.172 pass 1,2,4-Trimethylbenzene ND 0.0400 0.0350 ND 0.197 0.172 pass 1,3-Dichlorobenzene ND 0.0406 0.0350 ND 0.244 0.210 pass 1,4-Dichlorobenzene ND 0.0402 0.0350 ND 0.242 0.210 pass EA # 0124-075 Page 47 of 85 Sample Name Sample Info. Sample Type Batch Data File Dilution Pressurization Factor Acquisition Date Instrument Method Matrix Analyst Instrument Enthalpy ID Target Compound Concentration (ppbv) RL (ppbv) MDL (ppbv) Concentration (ug/m³) RL (ug/m³) MDL (ug/m³) Flags Xavier X020724A_Humid Blank #0702 1.000 2024-02-07 16:27 TO15_SCNV6.M Air TDD 500mL load Blank Xavier_X020724A_0124-075.v1 X2400699.D 1.000 Enthalpy Analytical Job No.: 0124-075-1 EPA Method TO-15 Analysis -- Run AECOM - Morrisville 60722767 Frye & Webster DC410064 X020724A_Humid Blank #0702 Benzyl chloride ND 0.0402 0.0350 ND 0.208 0.181 pass 1,2-Dichlorobenzene ND 0.0405 0.0350 ND 0.243 0.210 pass 1,2,4-Trichlorobenzene ND 0.0398 0.0350 ND 0.295 0.260 pass Hexachlorobutadiene ND 0.0395 0.0350 ND 0.421 0.373 pass Naphthalene ND 0.0403 0.0350 ND 0.211 0.183 pass 1-Bromopropane ND 0.0397 0.0350 ND 0.199 0.176 pass 1-Octene ND 0.0395 0.0350 ND 0.181 0.161 pass n-Octane ND 0.0412 0.0350 ND 0.192 0.163 pass Isopropylbenzene ND 0.0406 0.0350 ND 0.200 0.172 pass n-Propylbenzene ND 0.0410 0.0350 ND 0.202 0.172 pass Compound Response Retention Time (min) Concentration (ppbv) Flag Bromochloromethane (IS)808,821 11.02 5.21 pass 1,4-Difluorobenzene (IS)3,082,312 12.44 5.16 pass Chlorobenzene-d5 (IS)2,712,547 16.57 4.92 pass (ND) = Not Detected (J) = Below Calibration Range, (E) = Above Calibration Range, (m) = Manual Integration IS Acceptance Criteria: RT +/- 20 sec, Response +/- 40% EA # 0124-075 Page 48 of 85 Sample Name Sample Info. Sample Type Batch Data File Dilution Pressurization Factor Acquisition Date Instrument Method Matrix Analyst Instrument Enthalpy ID Target Compound Concentration (ppbv) RL (ppbv) MDL (ppbv) Concentration (ug/m³) RL (ug/m³) MDL (ug/m³) Flags Propylene ND 0.0386 0.0350 ND 0.0665 0.0602 pass Freon 12 (CCl2F2)ND 0.0392 0.0350 ND 0.194 0.173 pass Freon 114 (C2Cl2F4)ND 0.0401 0.0350 ND 0.280 0.245 pass Chloromethane ND 0.0396 0.0350 ND 0.0816 0.0722 pass Chloroethene (Vinyl chloride)ND 0.0400 0.0350 ND 0.102 0.0894 pass 1,3-Butadiene ND 0.0389 0.0350 ND 0.0860 0.0774 pass Bromomethane ND 0.0392 0.0350 ND 0.152 0.136 pass Chloroethane ND 0.0406 0.0350 ND 0.107 0.0923 pass Bromoethene (Vinyl bromide)ND 0.0391 0.0350 ND 0.171 0.153 pass Freon 11 (CCl3F)ND 0.0422 0.0350 ND 0.237 0.197 pass Ethanol 0.0650 0.0396 0.0396 0.122 0.0746 0.0746 pass Acrolein ND 0.0394 0.0350 ND 0.0903 0.0802 pass Freon 113 (C2Cl3F3)ND 0.0406 0.0350 ND 0.311 0.268 pass 1,1-Dichloroethene ND 0.0402 0.0350 ND 0.159 0.139 pass Acetone 0.0407 0.0401 0.0350 0.0965 0.0951 0.0831 pass Carbon disulfide ND 0.0399 0.0350 ND 0.124 0.109 pass Isopropyl alcohol ND 0.0399 0.0350 ND 0.0980 0.0860 pass Allyl chloride (3-chloropropene)ND 0.0432 0.0350 ND 0.135 0.109 pass Acetonitrile ND 0.0399 0.0350 ND 0.0669 0.0587 pass Methylene chloride ND 0.0410 0.0350 ND 0.142 0.122 pass trans-1,2-Dichloroethene ND 0.0408 0.0350 ND 0.162 0.139 pass Methyl tert-butyl ether ND 0.0411 0.0350 ND 0.148 0.126 pass Acrylonitrile ND 0.0407 0.0350 ND 0.0883 0.0759 pass Hexane ND 0.0406 0.0350 ND 0.143 0.123 pass 1,1-Dichloroethane ND 0.0397 0.0350 ND 0.161 0.142 pass Vinyl acetate ND 0.0409 0.0350 ND 0.144 0.123 pass Methyl ethyl ketone (2-Butanone)ND 0.0414 0.0350 ND 0.122 0.103 pass Ethyl acetate ND 0.0399 0.0350 ND 0.144 0.126 pass Chloroform ND 0.0401 0.0350 ND 0.196 0.171 pass Tetrahydrofuran ND 0.0405 0.0350 ND 0.119 0.103 pass 1,1,1-Trichloroethane ND 0.0404 0.0350 ND 0.220 0.191 pass Cyclohexane ND 0.0410 0.0350 ND 0.141 0.120 pass Carbon tetrachloride ND 0.0403 0.0350 ND 0.253 0.220 pass Xavier X020924A_Humid Blank #0702 1.000 2024-02-09 06:06 TO15_SCNV6.M Air TDD 500mL load Blank Xavier_X020924A_0124-075.v2 X2400740.D 1.000 Enthalpy Analytical Job No.: 0124-075-1 EPA Method TO-15 Analysis -- Run AECOM - Morrisville 60722767 Frye & Webster DC410064 X020924A_Humid Blank #0702 EA # 0124-075 Page 49 of 85 Sample Name Sample Info. Sample Type Batch Data File Dilution Pressurization Factor Acquisition Date Instrument Method Matrix Analyst Instrument Enthalpy ID Target Compound Concentration (ppbv) RL (ppbv) MDL (ppbv) Concentration (ug/m³) RL (ug/m³) MDL (ug/m³) Flags Xavier X020924A_Humid Blank #0702 1.000 2024-02-09 06:06 TO15_SCNV6.M Air TDD 500mL load Blank Xavier_X020924A_0124-075.v2 X2400740.D 1.000 Enthalpy Analytical Job No.: 0124-075-1 EPA Method TO-15 Analysis -- Run AECOM - Morrisville 60722767 Frye & Webster DC410064 X020924A_Humid Blank #0702 Benzene ND 0.0402 0.0350 ND 0.128 0.112 pass 2,2,4-trimethylpentane ND 0.0414 0.0350 ND 0.193 0.163 pass 1,2-Dichloroethane ND 0.0412 0.0350 ND 0.166 0.142 pass Heptane ND 0.0405 0.0350 ND 0.166 0.143 pass 1,2-Dichloropropane ND 0.0403 0.0350 ND 0.186 0.162 pass Methyl methacrylate ND 0.0419 0.0350 ND 0.171 0.143 pass 1,4-Dioxane ND 0.0401 0.0350 ND 0.144 0.126 pass Bromodichloromethane ND 0.0404 0.0350 ND 0.271 0.234 pass cis-1,3-Dichloropropene ND 0.0397 0.0350 ND 0.180 0.159 pass Methyl isobutyl ketone ND 0.0416 0.0350 ND 0.170 0.143 pass Toluene ND 0.0407 0.0350 ND 0.153 0.132 pass trans-1,3-Dichloropropene ND 0.0413 0.0350 ND 0.187 0.159 pass 1,1,2-Trichloroethane ND 0.0407 0.0350 ND 0.222 0.191 pass 2-Hexanone (Methyl butyl ketone)ND 0.0409 0.0350 ND 0.168 0.143 pass Dibromochloromethane ND 0.0403 0.0350 ND 0.343 0.298 pass 1,2-Dibromoethane ND 0.0409 0.0350 ND 0.314 0.269 pass Chlorobenzene ND 0.0412 0.0350 ND 0.190 0.161 pass Ethylbenzene ND 0.0397 0.0350 ND 0.172 0.152 pass 1,1,1,2-Tetrachloroethane ND 0.0403 0.0350 ND 0.277 0.240 pass m-/p-Xylenes ND 0.0406 0.0350 ND 0.176 0.152 pass o-Xylene ND 0.0401 0.0350 ND 0.174 0.152 pass Styrene ND 0.0392 0.0350 ND 0.167 0.149 pass Bromoform ND 0.0401 0.0350 ND 0.414 0.362 pass 1,1,2,2-Tetrachloroethane ND 0.0404 0.0350 ND 0.277 0.240 pass 4-Ethyltoluene ND 0.0407 0.0350 ND 0.200 0.172 pass 2-Chlorotoluene ND 0.0404 0.0350 ND 0.209 0.181 pass 1,3,5-Trimethylbenzene ND 0.0406 0.0350 ND 0.199 0.172 pass 1,2,4-Trimethylbenzene ND 0.0400 0.0350 ND 0.197 0.172 pass 1,3-Dichlorobenzene ND 0.0406 0.0350 ND 0.244 0.210 pass 1,4-Dichlorobenzene ND 0.0402 0.0350 ND 0.242 0.210 pass Benzyl chloride ND 0.0402 0.0350 ND 0.208 0.181 pass 1,2-Dichlorobenzene ND 0.0405 0.0350 ND 0.243 0.210 pass 1,2,4-Trichlorobenzene ND 0.0398 0.0350 ND 0.295 0.260 pass EA # 0124-075 Page 50 of 85 Sample Name Sample Info. Sample Type Batch Data File Dilution Pressurization Factor Acquisition Date Instrument Method Matrix Analyst Instrument Enthalpy ID Target Compound Concentration (ppbv) RL (ppbv) MDL (ppbv) Concentration (ug/m³) RL (ug/m³) MDL (ug/m³) Flags Xavier X020924A_Humid Blank #0702 1.000 2024-02-09 06:06 TO15_SCNV6.M Air TDD 500mL load Blank Xavier_X020924A_0124-075.v2 X2400740.D 1.000 Enthalpy Analytical Job No.: 0124-075-1 EPA Method TO-15 Analysis -- Run AECOM - Morrisville 60722767 Frye & Webster DC410064 X020924A_Humid Blank #0702 Hexachlorobutadiene ND 0.0395 0.0350 ND 0.421 0.373 pass Naphthalene ND 0.0403 0.0350 ND 0.211 0.183 pass 1-Bromopropane ND 0.0397 0.0350 ND 0.199 0.176 pass 1-Octene ND 0.0395 0.0350 ND 0.181 0.161 pass n-Octane ND 0.0412 0.0350 ND 0.192 0.163 pass Isopropylbenzene ND 0.0406 0.0350 ND 0.200 0.172 pass n-Propylbenzene ND 0.0410 0.0350 ND 0.202 0.172 pass Compound Response Retention Time (min) Concentration (ppbv) Flag Bromochloromethane (IS)870,801 11.02 5.21 pass 1,4-Difluorobenzene (IS)3,343,686 12.44 5.16 pass Chlorobenzene-d5 (IS)3,019,018 16.57 4.92 pass (ND) = Not Detected (J) = Below Calibration Range, (E) = Above Calibration Range, (m) = Manual Integration IS Acceptance Criteria: RT +/- 20 sec, Response +/- 40% EA # 0124-075 Page 51 of 85 Sample Name Sample Info. Sample Type Batch Data File Dilution Pressurization Factor Acquisition Date Instrument Method Matrix Enthalpy ID Target Compound Response Concentration (ppbv) Expected Conc (ppbv) Recovery (%) Flags Propylene 694,977 4.58 4.83 94.9 pass Freon 12 (CCl2F2)2,087,221 4.76 4.90 97.3 pass Freon 114 (C2Cl2F4)2,136,646 4.72 5.01 94.2 pass Chloromethane 707,215 4.48 4.94 90.7 pass Chloroethene (Vinyl chloride)384,129 4.13 5.00 82.6 pass, m 1,3-Butadiene 697,388 4.45 4.86 91.4 pass Bromomethane 420,171 4.17 4.90 85.1 pass, m Chloroethane 353,987 4.74 5.08 93.2 pass Bromoethene (Vinyl bromide)767,047 4.27 4.89 87.2 pass Freon 11 (CCl3F)2,332,880 5.35 5.28 101 pass Ethanol 328,968 3.74 4.96 75.5 pass Acrolein 267,625 4.32 4.92 87.7 pass Freon 113 (C2Cl3F3)1,505,762 4.78 5.08 94.2 pass 1,1-Dichloroethene 1,319,131 4.69 5.03 93.2 pass Acetone 1,490,025 4.60 5.01 91.9 pass Carbon disulfide 2,127,577 4.81 4.98 96.5 pass Isopropyl alcohol 1,557,062 4.69 4.98 94.2 pass Allyl chloride (3-chloropropene)324,917 5.13 5.04 102 pass Acetonitrile 704,274 4.73 4.98 94.8 pass, m Methylene chloride 1,091,627 4.54 5.12 88.7 pass trans-1,2-Dichloroethene 1,168,140 5.09 5.10 99.8 pass Methyl tert-butyl ether 2,076,538 5.36 5.14 104 pass Acrylonitrile 562,472 4.61 5.09 90.6 pass, m Hexane 1,206,305 5.19 5.08 102 pass 1,1-Dichloroethane 1,434,100 5.14 4.96 104 pass Vinyl acetate 2,257,807 4.97 5.12 97.2 pass cis-1,2-Dichloroethene 1,364,299 5.39 5.05 107 pass Methyl ethyl ketone (2-Butanone)364,686 5.24 5.17 101 pass Ethyl acetate 330,109 4.89 4.99 98.1 pass Chloroform 1,776,048 5.38 5.02 107 pass Tetrahydrofuran 338,388 5.22 5.06 103 pass 1,1,1-Trichloroethane 1,826,137 5.35 5.05 106 pass Cyclohexane 1,278,084 5.41 5.12 106 pass Carbon tetrachloride 2,039,744 5.33 5.04 106 pass 1.000 2024-02-01 12:52 TO15_SCNV6.M Air X020124A_5ppbv TO15 LCS 125mL load; Can #2037; GCMSPrepPg1321 QC Xavier_X020124A_0124-075.v1 X2400585.D 1.000 Enthalpy Analytical Job No.: 0124-075-1 EPA Method TO-15 Analysis -- Run AECOM - Morrisville 60722767 Frye & Webster DC410064 X020124A_5ppbv TO15 LCS EA # 0124-075 Page 52 of 85 Sample Name Sample Info. Sample Type Batch Data File Dilution Pressurization Factor Acquisition Date Instrument Method Matrix Enthalpy ID Target Compound Response Concentration (ppbv) Expected Conc (ppbv) Recovery (%) Flags Propylene 694,977 4.58 4.83 94.9 pass 1.000 2024-02-01 12:52 TO15_SCNV6.M Air X020124A_5ppbv TO15 LCS 125mL load; Can #2037; GCMSPrepPg1321 QC Xavier_X020124A_0124-075.v1 X2400585.D 1.000 Enthalpy Analytical Job No.: 0124-075-1 EPA Method TO-15 Analysis -- Run AECOM - Morrisville 60722767 Frye & Webster DC410064 X020124A_5ppbv TO15 LCS Benzene 2,220,802 4.91 5.03 97.7 pass 2,2,4-trimethylpentane 4,097,316 5.16 5.17 99.7 pass 1,2-Dichloroethane 1,196,800 4.94 5.14 96.0 pass Heptane 783,352 4.94 5.06 97.5 pass Trichloroethene 1,202,025 4.50 5.06 89.1 pass 1,2-Dichloropropane 942,353 5.01 5.04 99.5 pass Methyl methacrylate 844,713 5.34 5.24 102 pass 1,4-Dioxane 525,643 5.04 5.02 101 pass Bromodichloromethane 1,898,491 5.19 5.05 103 pass cis-1,3-Dichloropropene 1,294,676 4.73 4.96 95.3 pass Methyl isobutyl ketone 2,613,386 5.20 5.20 100 pass, m Toluene 2,953,926 4.67 5.09 91.8 pass trans-1,3-Dichloropropene 1,328,309 4.62 5.16 89.6 pass 1,1,2-Trichloroethane 1,038,320 4.67 5.08 91.9 pass Tetrachloroethene 1,798,909 4.90 5.12 95.8 pass 2-Hexanone (Methyl butyl ketone)2,496,079 5.12 5.12 100 pass, m Dibromochloromethane 2,308,788 4.95 5.04 98.2 pass 1,2-Dibromoethane 1,898,392 4.85 5.12 94.8 pass Chlorobenzene 2,560,922 4.62 5.15 89.7 pass Ethylbenzene 3,823,273 4.64 4.96 93.4 pass 1,1,1,2-Tetrachloroethane 1,516,292 4.64 5.04 92.0 pass m-/p-Xylenes 3,099,477 4.97 5.07 98.1 pass o-Xylene 3,091,400 4.76 5.01 95.0 pass Styrene 2,361,297 4.63 4.90 94.4 pass Bromoform 2,638,057 5.41 5.02 108 pass 1,1,2,2-Tetrachloroethane 2,439,286 4.92 5.06 97.4 pass 4-Ethyltoluene 4,408,271 4.72 5.08 92.9 pass 2-Chlorotoluene 3,763,797 4.88 5.04 96.7 pass 1,3,5-Trimethylbenzene 3,809,952 4.91 5.07 96.9 pass 1,2,4-Trimethylbenzene 3,751,086 4.74 5.00 94.8 pass 1,3-Dichlorobenzene 2,949,202 4.60 5.08 90.5 pass 1,4-Dichlorobenzene 2,948,685 4.51 5.02 89.8 pass Benzyl chloride 3,472,233 5.05 5.03 100 pass EA # 0124-075 Page 53 of 85 Sample Name Sample Info. Sample Type Batch Data File Dilution Pressurization Factor Acquisition Date Instrument Method Matrix Enthalpy ID Target Compound Response Concentration (ppbv) Expected Conc (ppbv) Recovery (%) Flags Propylene 694,977 4.58 4.83 94.9 pass 1.000 2024-02-01 12:52 TO15_SCNV6.M Air X020124A_5ppbv TO15 LCS 125mL load; Can #2037; GCMSPrepPg1321 QC Xavier_X020124A_0124-075.v1 X2400585.D 1.000 Enthalpy Analytical Job No.: 0124-075-1 EPA Method TO-15 Analysis -- Run AECOM - Morrisville 60722767 Frye & Webster DC410064 X020124A_5ppbv TO15 LCS 1,2-Dichlorobenzene 2,915,013 4.72 5.06 93.1 pass 1,2,4-Trichlorobenzene 2,274,674 4.26 4.98 85.5 pass Hexachlorobutadiene 2,382,995 5.12 4.94 104 pass Naphthalene 4,802,740 3.93 5.04 78.0 pass 1-Bromopropane 1,762,373 5.17 4.96 104 pass 1-Octene 651,655 5.04 4.94 102 pass n-Octane 861,397 5.02 5.02 100 pass Isopropylbenzene 4,475,078 4.74 5.08 93.4 pass n-Propylbenzene 5,305,793 5.01 5.13 97.6 pass Compound Response Retention Time (min) Concentration (ppbv) Flag Bromochloromethane (IS)951,424 11.02 5.21 pass 1,4-Difluorobenzene (IS)3,611,252 12.44 5.16 pass Chlorobenzene-d5 (IS)3,168,512 16.57 4.92 pass (ND) = Not Detected (J) = Below Calibration Range, (E) = Above Calibration Range, (m) = Manual Integration IS Acceptance Criteria: RT +/- 20 sec, Response +/- 40% EA # 0124-075 Page 54 of 85 Sample Name Sample Info. Sample Type Batch Data File Dilution Pressurization Factor Acquisition Date Instrument Method Matrix Enthalpy ID Target Compound Response Concentration (ppbv) Expected Conc (ppbv) Recovery (%) Flags Propylene 684,084 4.98 4.83 103 pass Freon 12 (CCl2F2)1,898,609 4.78 4.90 97.7 pass Freon 114 (C2Cl2F4)2,000,067 4.87 5.01 97.2 pass Chloromethane 683,985 4.78 4.94 96.7 pass Chloroethene (Vinyl chloride)355,824 4.22 5.00 84.4 pass 1,3-Butadiene 627,461 4.41 4.86 90.7 pass Bromomethane 409,771 4.49 4.90 91.5 pass, m Chloroethane 339,118 5.00 5.08 98.5 pass Bromoethene (Vinyl bromide)745,201 4.57 4.89 93.5 pass Freon 11 (CCl3F)2,089,155 5.28 5.28 100 pass Ethanol 317,094 3.98 4.96 80.2 pass Acrolein 260,041 4.63 4.92 94.0 pass Freon 113 (C2Cl3F3)1,447,016 5.06 5.08 99.8 pass 1,1-Dichloroethene 1,205,932 4.73 5.03 94.0 pass Acetone 1,366,336 4.65 5.01 92.9 pass Carbon disulfide 1,988,250 4.96 4.98 99.4 pass Isopropyl alcohol 1,460,788 4.86 4.98 97.4 pass Allyl chloride (3-chloropropene)292,997 5.10 5.04 101 pass Acetonitrile 681,491 5.04 4.98 101 pass, m Methylene chloride 1,005,655 4.61 5.12 90.1 pass trans-1,2-Dichloroethene 1,069,696 5.14 5.10 101 pass Methyl tert-butyl ether 1,900,051 5.41 5.14 105 pass Acrylonitrile 547,162 4.94 5.09 97.1 pass, m Hexane 1,136,586 5.39 5.08 106 pass 1,1-Dichloroethane 1,311,912 5.19 4.96 104 pass Vinyl acetate 2,123,439 5.16 5.12 101 pass cis-1,2-Dichloroethene 1,245,611 5.42 5.05 107 pass Methyl ethyl ketone (2-Butanone)335,596 5.32 5.17 103 pass Ethyl acetate 311,042 5.09 4.99 102 pass Chloroform 1,610,352 5.38 5.02 107 pass Tetrahydrofuran 318,875 5.43 5.06 107 pass 1,1,1-Trichloroethane 1,628,391 5.26 5.05 104 pass Cyclohexane 1,206,711 5.63 5.12 110 pass Carbon tetrachloride 1,785,384 5.14 5.04 102 pass 1.000 2024-02-05 16:25 TO15_SCNV6.M Air X020524A_5ppbv TO15 LCS 125mL load; Can #2037; GCMSPrepPg1321 QC Xavier_X020524A_0124-075.v1 X2400650.D 1.000 Enthalpy Analytical Job No.: 0124-075-1 EPA Method TO-15 Analysis -- Run AECOM - Morrisville 60722767 Frye & Webster DC410064 X020524A_5ppbv TO15 LCS EA # 0124-075 Page 55 of 85 Sample Name Sample Info. Sample Type Batch Data File Dilution Pressurization Factor Acquisition Date Instrument Method Matrix Enthalpy ID Target Compound Response Concentration (ppbv) Expected Conc (ppbv) Recovery (%) Flags Propylene 684,084 4.98 4.83 103 pass 1.000 2024-02-05 16:25 TO15_SCNV6.M Air X020524A_5ppbv TO15 LCS 125mL load; Can #2037; GCMSPrepPg1321 QC Xavier_X020524A_0124-075.v1 X2400650.D 1.000 Enthalpy Analytical Job No.: 0124-075-1 EPA Method TO-15 Analysis -- Run AECOM - Morrisville 60722767 Frye & Webster DC410064 X020524A_5ppbv TO15 LCS Benzene 2,092,799 5.00 5.03 99.4 pass 2,2,4-trimethylpentane 3,832,027 5.21 5.17 101 pass 1,2-Dichloroethane 1,057,150 4.71 5.14 91.6 pass Heptane 728,201 4.96 5.06 97.9 pass Trichloroethene 1,141,346 4.62 5.06 91.3 pass 1,2-Dichloropropane 883,455 5.07 5.04 101 pass Methyl methacrylate 783,286 5.35 5.24 102 pass 1,4-Dioxane 497,355 5.15 5.02 103 pass Bromodichloromethane 1,701,186 5.03 5.05 99.5 pass cis-1,3-Dichloropropene 1,197,382 4.73 4.96 95.2 pass Methyl isobutyl ketone 2,391,791 5.14 5.20 99.0 pass Toluene 2,758,049 4.59 5.09 90.1 pass trans-1,3-Dichloropropene 1,193,576 4.37 5.16 84.7 pass 1,1,2-Trichloroethane 978,770 4.63 5.08 91.1 pass Tetrachloroethene 1,718,215 4.93 5.12 96.3 pass 2-Hexanone (Methyl butyl ketone)2,295,117 4.95 5.12 96.7 pass Dibromochloromethane 2,086,809 4.71 5.04 93.4 pass 1,2-Dibromoethane 1,765,447 4.75 5.12 92.8 pass Chlorobenzene 2,400,891 4.56 5.15 88.5 pass Ethylbenzene 3,549,991 4.53 4.96 91.2 pass 1,1,1,2-Tetrachloroethane 1,402,793 4.51 5.04 89.6 pass m-/p-Xylenes 2,878,746 4.86 5.07 95.8 pass o-Xylene 2,868,311 4.64 5.01 92.7 pass Styrene 2,257,442 4.65 4.90 94.9 pass Bromoform 2,409,851 5.20 5.02 104 pass 1,1,2,2-Tetrachloroethane 2,265,977 4.81 5.06 95.2 pass 4-Ethyltoluene 4,118,922 4.64 5.08 91.3 pass 2-Chlorotoluene 3,474,286 4.74 5.04 93.9 pass 1,3,5-Trimethylbenzene 3,516,318 4.77 5.07 94.1 pass 1,2,4-Trimethylbenzene 3,460,063 4.60 5.00 92.0 pass 1,3-Dichlorobenzene 2,783,023 4.56 5.08 89.8 pass 1,4-Dichlorobenzene 2,783,308 4.48 5.02 89.1 pass Benzyl chloride 3,166,503 4.84 5.03 96.3 pass EA # 0124-075 Page 56 of 85 Sample Name Sample Info. Sample Type Batch Data File Dilution Pressurization Factor Acquisition Date Instrument Method Matrix Enthalpy ID Target Compound Response Concentration (ppbv) Expected Conc (ppbv) Recovery (%) Flags Propylene 684,084 4.98 4.83 103 pass 1.000 2024-02-05 16:25 TO15_SCNV6.M Air X020524A_5ppbv TO15 LCS 125mL load; Can #2037; GCMSPrepPg1321 QC Xavier_X020524A_0124-075.v1 X2400650.D 1.000 Enthalpy Analytical Job No.: 0124-075-1 EPA Method TO-15 Analysis -- Run AECOM - Morrisville 60722767 Frye & Webster DC410064 X020524A_5ppbv TO15 LCS 1,2-Dichlorobenzene 2,710,294 4.61 5.06 91.1 pass 1,2,4-Trichlorobenzene 2,219,382 4.37 4.98 87.8 pass Hexachlorobutadiene 2,273,667 5.14 4.94 104 pass Naphthalene 4,558,572 3.92 5.04 77.9 pass 1-Bromopropane 1,631,192 5.27 4.96 106 pass 1-Octene 600,694 4.88 4.94 98.9 pass n-Octane 805,427 4.93 5.02 98.4 pass Isopropylbenzene 4,167,528 4.65 5.08 91.5 pass n-Propylbenzene 4,924,926 4.89 5.13 95.3 pass Compound Response Retention Time (min) Concentration (ppbv) Flag Bromochloromethane (IS)862,700 11.02 5.21 pass 1,4-Difluorobenzene (IS)3,343,476 12.44 5.16 pass Chlorobenzene-d5 (IS)3,011,767 16.57 4.92 pass (ND) = Not Detected (J) = Below Calibration Range, (E) = Above Calibration Range, (m) = Manual Integration IS Acceptance Criteria: RT +/- 20 sec, Response +/- 40% EA # 0124-075 Page 57 of 85 Sample Name Sample Info. Sample Type Batch Data File Dilution Pressurization Factor Acquisition Date Instrument Method Matrix Enthalpy ID Target Compound Response Concentration (ppbv) Expected Conc (ppbv) Recovery (%) Flags cis-1,2-Dichloroethene 1,193,124 5.23 5.05 104 pass Trichloroethene 1,117,720 4.62 5.06 91.4 pass Tetrachloroethene 1,700,382 5.16 5.12 101 pass Compound Response Retention Time (min) Concentration (ppbv) Flag Bromochloromethane (IS)857,544 11.02 5.21 pass 1,4-Difluorobenzene (IS)3,272,282 12.44 5.16 pass Chlorobenzene-d5 (IS)2,847,370 16.57 4.92 pass (ND) = Not Detected (J) = Below Calibration Range, (E) = Above Calibration Range, (m) = Manual Integration IS Acceptance Criteria: RT +/- 20 sec, Response +/- 40% 1.000 2024-02-06 13:32 TO15_SCNV6.M Air X020624A_5ppbv TO15 LCS 125mL load; Can #2037; GCMSPrepPg1321 QC Xavier_X020624A_0124-075.v1 X2400672.D 1.000 Enthalpy Analytical Job No.: 0124-075-1 EPA Method TO-15 Analysis -- Run AECOM - Morrisville 60722767 Frye & Webster DC410064 X020624A_5ppbv TO15 LCS EA # 0124-075 Page 58 of 85 Sample Name Sample Info. Sample Type Batch Data File Dilution Pressurization Factor Acquisition Date Instrument Method Matrix Enthalpy ID Target Compound Response Concentration (ppbv) Expected Conc (ppbv) Recovery (%) Flags Propylene 668,997 5.27 4.83 109 pass Freon 12 (CCl2F2)1,690,315 4.61 4.90 94.2 pass Freon 114 (C2Cl2F4)1,830,471 4.83 5.01 96.4 pass Chloromethane 618,022 4.68 4.94 94.7 pass Chloroethene (Vinyl chloride)319,973 4.11 5.00 82.2 pass, m 1,3-Butadiene 565,312 4.31 4.86 88.5 pass Bromomethane 369,171 4.38 4.90 89.4 pass, m Chloroethane 302,659 4.84 5.08 95.3 pass Bromoethene (Vinyl bromide)673,489 4.48 4.89 91.5 pass Freon 11 (CCl3F)1,825,203 5.00 5.28 94.8 pass Ethanol 284,325 3.86 4.96 78.0 pass, m Acrolein 228,252 4.40 4.92 89.4 pass Freon 113 (C2Cl3F3)1,315,781 4.99 5.08 98.3 pass 1,1-Dichloroethene 1,035,626 4.40 5.03 87.4 pass Acetone 1,186,332 4.38 5.01 87.4 pass Carbon disulfide 1,762,789 4.76 4.98 95.5 pass Isopropyl alcohol 1,306,825 4.71 4.98 94.4 pass Allyl chloride (3-chloropropene)268,963 5.07 5.04 101 pass Acetonitrile 634,673 5.09 4.98 102 pass Methylene chloride 893,608 4.44 5.12 86.7 pass trans-1,2-Dichloroethene 924,171 4.81 5.10 94.3 pass Methyl tert-butyl ether 1,653,120 5.10 5.14 99.2 pass Acrylonitrile 470,735 4.61 5.09 90.6 pass, m Hexane 1,000,176 5.14 5.08 101 pass 1,1-Dichloroethane 1,143,513 4.90 4.96 98.6 pass Vinyl acetate 1,900,936 5.00 5.12 97.8 pass, m cis-1,2-Dichloroethene 1,074,571 5.07 5.05 100 pass Methyl ethyl ketone (2-Butanone)285,462 4.90 5.17 94.8 pass Ethyl acetate 275,042 4.87 4.99 97.7 pass Chloroform 1,397,088 5.05 5.02 101 pass Tetrahydrofuran 282,375 5.21 5.06 103 pass 1,1,1-Trichloroethane 1,431,449 5.01 5.05 99.2 pass Cyclohexane 1,050,756 5.31 5.12 104 pass Carbon tetrachloride 1,567,093 4.89 5.04 97.1 pass 1.000 2024-02-07 13:49 TO15_SCNV6.M Air X020724A_5ppbv TO15 LCS 125mL load; Can #2037; GCMSPrepPg1321 QC Xavier_X020724A_0124-075.v1 X2400696.D 1.000 Enthalpy Analytical Job No.: 0124-075-1 EPA Method TO-15 Analysis -- Run AECOM - Morrisville 60722767 Frye & Webster DC410064 X020724A_5ppbv TO15 LCS EA # 0124-075 Page 59 of 85 Sample Name Sample Info. Sample Type Batch Data File Dilution Pressurization Factor Acquisition Date Instrument Method Matrix Enthalpy ID Target Compound Response Concentration (ppbv) Expected Conc (ppbv) Recovery (%) Flags Propylene 668,997 5.27 4.83 109 pass 1.000 2024-02-07 13:49 TO15_SCNV6.M Air X020724A_5ppbv TO15 LCS 125mL load; Can #2037; GCMSPrepPg1321 QC Xavier_X020724A_0124-075.v1 X2400696.D 1.000 Enthalpy Analytical Job No.: 0124-075-1 EPA Method TO-15 Analysis -- Run AECOM - Morrisville 60722767 Frye & Webster DC410064 X020724A_5ppbv TO15 LCS Benzene 1,846,366 4.84 5.03 96.2 pass 2,2,4-trimethylpentane 3,384,905 5.05 5.17 97.6 pass 1,2-Dichloroethane 911,251 4.46 5.14 86.6 pass Heptane 638,583 4.77 5.06 94.2 pass Trichloroethene 1,025,007 4.55 5.06 90.0 pass 1,2-Dichloropropane 765,531 4.82 5.04 95.7 pass Methyl methacrylate 679,896 5.10 5.24 97.3 pass 1,4-Dioxane 432,846 4.92 5.02 98.1 pass Bromodichloromethane 1,477,167 4.79 5.05 94.8 pass cis-1,3-Dichloropropene 1,056,902 4.58 4.96 92.2 pass Methyl isobutyl ketone 2,141,137 5.05 5.20 97.2 pass Toluene 2,409,822 4.51 5.09 88.5 pass trans-1,3-Dichloropropene 1,032,562 4.25 5.16 82.3 pass 1,1,2-Trichloroethane 870,888 4.63 5.08 91.1 pass Tetrachloroethene 1,564,590 5.04 5.12 98.6 pass 2-Hexanone (Methyl butyl ketone)2,020,197 4.89 5.12 95.7 pass Dibromochloromethane 1,874,529 4.75 5.04 94.2 pass 1,2-Dibromoethane 1,585,409 4.79 5.12 93.6 pass Chlorobenzene 2,158,094 4.60 5.15 89.4 pass Ethylbenzene 3,108,605 4.46 4.96 89.8 pass 1,1,1,2-Tetrachloroethane 1,268,970 4.59 5.04 91.0 pass m-/p-Xylenes 2,542,599 4.82 5.07 95.1 pass o-Xylene 2,534,541 4.61 5.01 92.1 pass Styrene 2,002,582 4.64 4.90 94.6 pass Bromoform 2,198,203 5.33 5.02 106 pass 1,1,2,2-Tetrachloroethane 2,016,057 4.81 5.06 95.2 pass 4-Ethyltoluene 3,662,683 4.64 5.08 91.2 pass 2-Chlorotoluene 3,054,369 4.68 5.04 92.8 pass 1,3,5-Trimethylbenzene 3,143,320 4.79 5.07 94.5 pass 1,2,4-Trimethylbenzene 3,086,793 4.61 5.00 92.2 pass 1,3-Dichlorobenzene 2,541,984 4.68 5.08 92.2 pass 1,4-Dichlorobenzene 2,558,622 4.63 5.02 92.1 pass Benzyl chloride 2,784,131 4.79 5.03 95.1 pass EA # 0124-075 Page 60 of 85 Sample Name Sample Info. Sample Type Batch Data File Dilution Pressurization Factor Acquisition Date Instrument Method Matrix Enthalpy ID Target Compound Response Concentration (ppbv) Expected Conc (ppbv) Recovery (%) Flags Propylene 668,997 5.27 4.83 109 pass 1.000 2024-02-07 13:49 TO15_SCNV6.M Air X020724A_5ppbv TO15 LCS 125mL load; Can #2037; GCMSPrepPg1321 QC Xavier_X020724A_0124-075.v1 X2400696.D 1.000 Enthalpy Analytical Job No.: 0124-075-1 EPA Method TO-15 Analysis -- Run AECOM - Morrisville 60722767 Frye & Webster DC410064 X020724A_5ppbv TO15 LCS 1,2-Dichlorobenzene 2,495,454 4.77 5.06 94.2 pass 1,2,4-Trichlorobenzene 2,114,085 4.68 4.98 93.9 pass Hexachlorobutadiene 2,171,415 5.52 4.94 112 pass Naphthalene 4,347,307 4.20 5.04 83.5 pass 1-Bromopropane 1,483,344 5.20 4.96 105 pass 1-Octene 526,998 4.81 4.94 97.6 pass n-Octane 703,032 4.84 5.02 96.5 pass Isopropylbenzene 3,718,879 4.66 5.08 91.7 pass n-Propylbenzene 4,355,540 4.86 5.13 94.7 pass Compound Response Retention Time (min) Concentration (ppbv) Flag Bromochloromethane (IS)796,254 11.02 5.21 pass 1,4-Difluorobenzene (IS)3,048,665 12.44 5.16 pass Chlorobenzene-d5 (IS)2,680,041 16.57 4.92 pass (ND) = Not Detected (J) = Below Calibration Range, (E) = Above Calibration Range, (m) = Manual Integration IS Acceptance Criteria: RT +/- 20 sec, Response +/- 40% EA # 0124-075 Page 61 of 85 Sample Name Sample Info. Sample Type Batch Data File Dilution Pressurization Factor Acquisition Date Instrument Method Matrix Enthalpy ID Target Compound Response Concentration (ppbv) Expected Conc (ppbv) Recovery (%) Flags Propylene 742,804 5.42 4.83 112 pass Freon 12 (CCl2F2)1,860,217 4.70 4.90 96.0 pass Freon 114 (C2Cl2F4)2,001,619 4.89 5.01 97.6 pass Chloromethane 691,112 4.85 4.94 98.1 pass Chloroethene (Vinyl chloride)387,432 4.61 5.00 92.3 pass 1,3-Butadiene 705,323 4.98 4.86 102 pass Bromomethane 404,914 4.45 4.90 90.8 pass Chloroethane 338,694 5.02 5.08 98.8 pass Bromoethene (Vinyl bromide)741,202 4.56 4.89 93.3 pass Freon 11 (CCl3F)2,033,138 5.16 5.28 97.8 pass Ethanol 327,235 4.12 4.96 83.1 pass Acrolein 257,598 4.60 4.92 93.5 pass Freon 113 (C2Cl3F3)1,437,745 5.05 5.08 99.5 pass 1,1-Dichloroethene 1,165,562 4.58 5.03 91.2 pass Acetone 1,348,999 4.61 5.01 92.1 pass Carbon disulfide 2,006,130 5.02 4.98 101 pass Isopropyl alcohol 1,469,129 4.90 4.98 98.4 pass Allyl chloride (3-chloropropene)302,664 5.29 5.04 105 pass Acetonitrile 723,942 5.38 4.98 108 pass Methylene chloride 1,008,573 4.64 5.12 90.7 pass trans-1,2-Dichloroethene 1,042,764 5.03 5.10 98.6 pass Methyl tert-butyl ether 1,851,716 5.29 5.14 103 pass Acrylonitrile 549,629 4.99 5.09 97.9 pass, m Hexane 1,128,878 5.37 5.08 106 pass 1,1-Dichloroethane 1,294,734 5.14 4.96 103 pass Vinyl acetate 2,059,777 5.02 5.12 98.2 pass, m Methyl ethyl ketone (2-Butanone)332,981 5.29 5.17 102 pass Ethyl acetate 316,650 5.20 4.99 104 pass Chloroform 1,576,953 5.29 5.02 105 pass Tetrahydrofuran 310,602 5.31 5.06 105 pass, m 1,1,1-Trichloroethane 1,576,022 5.11 5.05 101 pass Cyclohexane 1,200,519 5.62 5.12 110 pass Carbon tetrachloride 1,762,191 5.09 5.04 101 pass Benzene 2,071,550 4.98 5.03 98.9 pass 1.000 2024-02-09 03:27 TO15_SCNV6.M Air X020924A_5ppbv TO15 LCS 125mL load; Can #2037; GCMSPrepPg1321 QC Xavier_X020924A_0124-075.v2 X2400737.D 1.000 Enthalpy Analytical Job No.: 0124-075-1 EPA Method TO-15 Analysis -- Run AECOM - Morrisville 60722767 Frye & Webster DC410064 X020924A_5ppbv TO15 LCS EA # 0124-075 Page 62 of 85 Sample Name Sample Info. Sample Type Batch Data File Dilution Pressurization Factor Acquisition Date Instrument Method Matrix Enthalpy ID Target Compound Response Concentration (ppbv) Expected Conc (ppbv) Recovery (%) Flags Propylene 742,804 5.42 4.83 112 pass 1.000 2024-02-09 03:27 TO15_SCNV6.M Air X020924A_5ppbv TO15 LCS 125mL load; Can #2037; GCMSPrepPg1321 QC Xavier_X020924A_0124-075.v2 X2400737.D 1.000 Enthalpy Analytical Job No.: 0124-075-1 EPA Method TO-15 Analysis -- Run AECOM - Morrisville 60722767 Frye & Webster DC410064 X020924A_5ppbv TO15 LCS 2,2,4-trimethylpentane 3,832,254 5.24 5.17 101 pass 1,2-Dichloroethane 1,006,795 4.51 5.14 87.7 pass Heptane 734,679 5.03 5.06 99.3 pass 1,2-Dichloropropane 874,258 5.05 5.04 100 pass Methyl methacrylate 767,002 5.27 5.24 101 pass 1,4-Dioxane 497,393 5.18 5.02 103 pass Bromodichloromethane 1,656,701 4.92 5.05 97.5 pass cis-1,3-Dichloropropene 1,161,513 4.61 4.96 92.8 pass Methyl isobutyl ketone 2,432,153 5.26 5.20 101 pass Toluene 2,731,880 4.73 5.09 93.0 pass trans-1,3-Dichloropropene 1,148,693 4.38 5.16 84.9 pass 1,1,2-Trichloroethane 987,571 4.87 5.08 95.7 pass 2-Hexanone (Methyl butyl ketone)2,312,903 5.19 5.12 101 pass Dibromochloromethane 2,071,023 4.86 5.04 96.5 pass 1,2-Dibromoethane 1,757,762 4.92 5.12 96.2 pass Chlorobenzene 2,394,629 4.73 5.15 91.9 pass Ethylbenzene 3,462,632 4.60 4.96 92.6 pass 1,1,1,2-Tetrachloroethane 1,387,445 4.65 5.04 92.2 pass m-/p-Xylenes 2,834,133 4.98 5.07 98.2 pass o-Xylene 2,827,942 4.77 5.01 95.2 pass Styrene 2,228,815 4.78 4.90 97.6 pass Bromoform 2,414,440 5.42 5.02 108 pass 1,1,2,2-Tetrachloroethane 2,266,423 5.01 5.06 99.1 pass 4-Ethyltoluene 4,030,938 4.73 5.08 93.0 pass 2-Chlorotoluene 3,401,650 4.83 5.04 95.7 pass 1,3,5-Trimethylbenzene 3,474,075 4.91 5.07 96.8 pass 1,2,4-Trimethylbenzene 3,416,585 4.73 5.00 94.5 pass 1,3-Dichlorobenzene 2,791,800 4.77 5.08 93.8 pass 1,4-Dichlorobenzene 2,811,223 4.71 5.02 93.7 pass Benzyl chloride 3,138,848 5.00 5.03 99.4 pass 1,2-Dichlorobenzene 2,727,762 4.83 5.06 95.4 pass 1,2,4-Trichlorobenzene 2,303,970 4.72 4.98 94.8 pass Hexachlorobutadiene 2,357,408 5.55 4.94 112 pass EA # 0124-075 Page 63 of 85 Sample Name Sample Info. Sample Type Batch Data File Dilution Pressurization Factor Acquisition Date Instrument Method Matrix Enthalpy ID Target Compound Response Concentration (ppbv) Expected Conc (ppbv) Recovery (%) Flags Propylene 742,804 5.42 4.83 112 pass 1.000 2024-02-09 03:27 TO15_SCNV6.M Air X020924A_5ppbv TO15 LCS 125mL load; Can #2037; GCMSPrepPg1321 QC Xavier_X020924A_0124-075.v2 X2400737.D 1.000 Enthalpy Analytical Job No.: 0124-075-1 EPA Method TO-15 Analysis -- Run AECOM - Morrisville 60722767 Frye & Webster DC410064 X020924A_5ppbv TO15 LCS Naphthalene 4,815,130 4.31 5.04 85.6 pass 1-Bromopropane 1,678,551 5.45 4.96 110 pass 1-Octene 597,792 5.06 4.94 103 pass n-Octane 790,644 5.04 5.02 101 pass Isopropylbenzene 4,130,196 4.79 5.08 94.4 pass n-Propylbenzene 4,890,611 5.05 5.13 98.5 pass Compound Response Retention Time (min) Concentration (ppbv) Flag Bromochloromethane (IS)859,553 11.02 5.21 pass 1,4-Difluorobenzene (IS)3,325,670 12.44 5.16 pass Chlorobenzene-d5 (IS)2,892,857 16.57 4.92 pass (ND) = Not Detected (J) = Below Calibration Range, (E) = Above Calibration Range, (m) = Manual Integration IS Acceptance Criteria: RT +/- 20 sec, Response +/- 40% EA # 0124-075 Page 64 of 85 Sample Name Sample Info. Sample Type Batch Data File Dilution Pressurization Factor Acquisition Date Instrument Method Matrix Parent Enthalpy ID Target Compound Response Concentration (ppbv) Expected Conc (ppbv) Parent Conc (ppbv) Recovery (%) Diff (%) Flags Propylene 698,735 4.71 4.83 4.58 97.6 2.8 pass Freon 12 (CCl2F2)2,098,876 4.90 4.90 4.76 100 2.8 pass Freon 114 (C2Cl2F4)2,150,558 4.86 5.01 4.72 97.0 2.9 pass Chloromethane 709,642 4.60 4.94 4.48 93.1 2.6 pass Chloroethene (Vinyl chloride)386,655 4.25 5.00 4.13 85.1 2.9 pass, m 1,3-Butadiene 717,788 4.68 4.86 4.45 96.2 5.2 pass Bromomethane 426,898 4.34 4.90 4.17 88.5 3.9 pass Chloroethane 349,631 4.79 5.08 4.74 94.2 1.0 pass Bromoethene (Vinyl bromide)789,471 4.49 4.89 4.27 91.9 5.2 pass Freon 11 (CCl3F)2,355,720 5.52 5.28 5.35 105 3.2 pass Ethanol 332,941 3.87 4.96 3.74 78.1 3.5 pass Acrolein 272,885 4.51 4.92 4.32 91.5 4.2 pass Freon 113 (C2Cl3F3)1,523,118 4.95 5.08 4.78 97.4 3.4 pass 1,1-Dichloroethene 1,336,585 4.86 5.03 4.69 96.6 3.6 pass Acetone 1,512,554 4.78 5.01 4.60 95.4 3.8 pass Carbon disulfide 2,110,193 4.88 4.98 4.81 97.9 1.5 pass Isopropyl alcohol 1,588,963 4.90 4.98 4.69 98.3 4.3 pass Allyl chloride (3-chloropropene)319,805 5.17 5.04 5.13 102 0.7 pass Acetonitrile 741,604 5.09 4.98 4.73 102 7.4 pass, m Methylene chloride 1,093,526 4.65 5.12 4.54 90.9 2.4 pass trans-1,2-Dichloroethene 1,169,169 5.21 5.10 5.09 102 2.4 pass Methyl tert-butyl ether 2,101,958 5.55 5.14 5.36 108 3.5 pass Acrylonitrile 581,170 4.87 5.09 4.61 95.7 5.5 pass, m Hexane 1,211,314 5.33 5.08 5.19 105 2.7 pass 1,1-Dichloroethane 1,431,330 5.25 4.96 5.14 106 2.1 pass Vinyl acetate 2,260,407 5.09 5.12 4.97 99.6 2.4 pass cis-1,2-Dichloroethene 1,386,806 5.60 5.05 5.39 111 3.9 pass Methyl ethyl ketone (2-Butanone)361,348 5.31 5.17 5.24 103 1.4 pass Ethyl acetate 336,125 5.10 4.99 4.89 102 4.1 pass Chloroform 1,767,449 5.47 5.02 5.38 109 1.8 pass Tetrahydrofuran 345,954 5.46 5.06 5.22 108 4.5 pass, m 1,1,1-Trichloroethane 1,809,018 5.42 5.05 5.35 107 1.3 pass Cyclohexane 1,284,385 5.56 5.12 5.41 109 2.8 pass X020124A_5ppbv TO15 LCS LD 1.000 2024-02-01 13:40 TO15_SCNV6.M Air X020124A_5ppbv TO15 LCS 125mL load; Can #2037; GCMSPrepPg1321 QcDup Xavier_X020124A_0124-075.v1 X2400586.D 1.000 Enthalpy Analytical Job No.: 0124-075-1 EPA Method TO-15 Analysis -- Run AECOM - Morrisville 60722767 Frye & Webster DC410064 X020124A_5ppbv TO15 LCS LD EA # 0124-075 Page 65 of 85 Sample Name Sample Info. Sample Type Batch Data File Dilution Pressurization Factor Acquisition Date Instrument Method Matrix Parent Enthalpy ID Target Compound Response Concentration (ppbv) Expected Conc (ppbv) Parent Conc (ppbv) Recovery (%) Diff (%) Flags X020124A_5ppbv TO15 LCS LD 1.000 2024-02-01 13:40 TO15_SCNV6.M Air X020124A_5ppbv TO15 LCS 125mL load; Can #2037; GCMSPrepPg1321 QcDup Xavier_X020124A_0124-075.v1 X2400586.D 1.000 Enthalpy Analytical Job No.: 0124-075-1 EPA Method TO-15 Analysis -- Run AECOM - Morrisville 60722767 Frye & Webster DC410064 X020124A_5ppbv TO15 LCS LD Carbon tetrachloride 2,051,128 5.48 5.04 5.33 109 2.8 pass Benzene 2,215,393 5.01 5.03 4.91 99.7 2.0 pass 2,2,4-trimethylpentane 4,103,276 5.28 5.17 5.16 102 2.4 pass 1,2-Dichloroethane 1,194,704 5.04 5.14 4.94 98.0 2.1 pass Heptane 773,496 4.99 5.06 4.94 98.5 1.0 pass Trichloroethene 1,216,769 4.66 5.06 4.50 92.2 3.5 pass 1,2-Dichloropropane 941,904 5.12 5.04 5.01 102 2.2 pass Methyl methacrylate 849,858 5.50 5.24 5.34 105 2.9 pass 1,4-Dioxane 533,113 5.23 5.02 5.04 104 3.7 pass Bromodichloromethane 1,914,215 5.36 5.05 5.19 106 3.1 pass cis-1,3-Dichloropropene 1,293,742 4.84 4.96 4.73 97.4 2.2 pass Methyl isobutyl ketone 2,621,170 5.34 5.20 5.20 103 2.6 pass Toluene 2,953,552 4.80 5.09 4.67 94.3 2.7 pass trans-1,3-Dichloropropene 1,323,999 4.74 5.16 4.62 91.8 2.4 pass 1,1,2-Trichloroethane 1,053,363 4.87 5.08 4.67 95.8 4.2 pass Tetrachloroethene 1,812,874 5.08 5.12 4.90 99.3 3.5 pass 2-Hexanone (Methyl butyl ketone)2,503,977 5.28 5.12 5.12 103 3.1 pass Dibromochloromethane 2,330,020 5.13 5.04 4.95 102 3.7 pass 1,2-Dibromoethane 1,904,416 5.00 5.12 4.85 97.8 3.1 pass Chlorobenzene 2,585,662 4.80 5.15 4.62 93.1 3.7 pass Ethylbenzene 3,843,824 4.79 4.96 4.64 96.5 3.3 pass 1,1,1,2-Tetrachloroethane 1,548,862 4.87 5.04 4.64 96.6 4.9 pass m-/p-Xylenes 3,103,815 5.12 5.07 4.97 101 2.9 pass o-Xylene 3,113,681 4.93 5.01 4.76 98.3 3.5 pass Styrene 2,387,802 4.81 4.90 4.63 98.1 3.9 pass Bromoform 2,671,774 5.63 5.02 5.41 112 4.0 pass 1,1,2,2-Tetrachloroethane 2,454,563 5.09 5.06 4.92 101 3.4 pass 4-Ethyltoluene 4,468,194 4.92 5.08 4.72 96.8 4.1 pass 2-Chlorotoluene 3,795,877 5.06 5.04 4.88 100 3.6 pass 1,3,5-Trimethylbenzene 3,793,727 5.03 5.07 4.91 99.2 2.3 pass 1,2,4-Trimethylbenzene 3,781,402 4.92 5.00 4.74 98.2 3.6 pass 1,3-Dichlorobenzene 2,994,577 4.80 5.08 4.60 94.4 4.3 pass 1,4-Dichlorobenzene 3,026,149 4.76 5.02 4.51 94.7 5.4 pass EA # 0124-075 Page 66 of 85 Sample Name Sample Info. Sample Type Batch Data File Dilution Pressurization Factor Acquisition Date Instrument Method Matrix Parent Enthalpy ID Target Compound Response Concentration (ppbv) Expected Conc (ppbv) Parent Conc (ppbv) Recovery (%) Diff (%) Flags X020124A_5ppbv TO15 LCS LD 1.000 2024-02-01 13:40 TO15_SCNV6.M Air X020124A_5ppbv TO15 LCS 125mL load; Can #2037; GCMSPrepPg1321 QcDup Xavier_X020124A_0124-075.v1 X2400586.D 1.000 Enthalpy Analytical Job No.: 0124-075-1 EPA Method TO-15 Analysis -- Run AECOM - Morrisville 60722767 Frye & Webster DC410064 X020124A_5ppbv TO15 LCS LD Benzyl chloride 3,522,736 5.26 5.03 5.05 105 4.2 pass 1,2-Dichlorobenzene 2,930,299 4.87 5.06 4.72 96.2 3.3 pass 1,2,4-Trichlorobenzene 2,423,239 4.66 4.98 4.26 93.6 9.1 pass Hexachlorobutadiene 2,497,078 5.52 4.94 5.12 112 7.4 pass Naphthalene 5,036,384 4.23 5.04 3.93 84.1 7.5 pass 1-Bromopropane 1,769,583 5.31 4.96 5.17 107 2.7 pass 1-Octene 652,406 5.18 4.94 5.04 105 2.9 pass n-Octane 858,469 5.14 5.02 5.02 102 2.4 pass Isopropylbenzene 4,456,440 4.85 5.08 4.74 95.6 2.3 pass n-Propylbenzene 5,344,053 5.18 5.13 5.01 101 3.5 pass Compound Response Retention Time (min) Concentration (ppbv) Flag Bromochloromethane (IS)930,038 11.02 5.21 pass 1,4-Difluorobenzene (IS)3,530,378 12.44 5.16 pass Chlorobenzene-d5 (IS)3,082,249 16.57 4.92 pass (ND) = Not Detected (J) = Below Calibration Range, (E) = Above Calibration Range, (m) = Manual Integration IS Acceptance Criteria: RT +/- 20 sec, Response +/- 40% EA # 0124-075 Page 67 of 85 Sample Name Sample Info. Sample Type Batch Data File Dilution Pressurization Factor Acquisition Date Instrument Method Matrix Parent Enthalpy ID Target Compound Response Concentration (ppbv) Expected Conc (ppbv) Parent Conc (ppbv) Recovery (%) Diff (%) Flags Propylene 673,910 4.88 4.83 4.98 101 1.9 pass Freon 12 (CCl2F2)1,866,102 4.68 4.90 4.78 95.6 2.2 pass Freon 114 (C2Cl2F4)1,976,669 4.79 5.01 4.87 95.6 1.6 pass Chloromethane 669,445 4.66 4.94 4.78 94.3 2.6 pass Chloroethene (Vinyl chloride)337,372 3.98 5.00 4.22 79.7 5.8 pass, m 1,3-Butadiene 597,995 4.19 4.86 4.41 86.1 5.3 pass Bromomethane 401,964 4.39 4.90 4.49 89.4 2.4 pass, m Chloroethane 333,151 4.89 5.08 5.00 96.4 2.2 pass Bromoethene (Vinyl bromide)723,904 4.42 4.89 4.57 90.4 3.3 pass Freon 11 (CCl3F)2,036,531 5.13 5.28 5.28 97.2 3.0 pass Ethanol 314,398 3.92 4.96 3.98 79.2 1.3 pass Acrolein 260,406 4.62 4.92 4.63 93.7 0.3 pass Freon 113 (C2Cl3F3)1,430,709 4.99 5.08 5.06 98.2 1.6 pass 1,1-Dichloroethene 1,170,522 4.57 5.03 4.73 90.8 3.4 pass Acetone 1,328,313 4.51 5.01 4.65 89.9 3.3 pass Carbon disulfide 1,954,467 4.85 4.98 4.96 97.3 2.2 pass Isopropyl alcohol 1,431,256 4.74 4.98 4.86 95.0 2.5 pass Allyl chloride (3-chloropropene)298,400 5.17 5.04 5.10 103 1.4 pass Acetonitrile 676,976 4.99 4.98 5.04 100 1.1 pass Methylene chloride 995,688 4.55 5.12 4.61 88.8 1.4 pass trans-1,2-Dichloroethene 1,046,391 5.00 5.10 5.14 98.1 2.6 pass Methyl tert-butyl ether 1,868,489 5.29 5.14 5.41 103 2.1 pass Acrylonitrile 546,956 4.92 5.09 4.94 96.7 0.5 pass, m Hexane 1,114,820 5.26 5.08 5.39 104 2.4 pass 1,1-Dichloroethane 1,280,699 5.04 4.96 5.19 102 2.8 pass Vinyl acetate 2,077,676 5.02 5.12 5.16 98.2 2.6 pass, m cis-1,2-Dichloroethene 1,222,409 5.30 5.05 5.42 105 2.3 pass Methyl ethyl ketone (2-Butanone)330,760 5.22 5.17 5.32 101 1.9 pass Ethyl acetate 304,595 4.96 4.99 5.09 99.4 2.5 pass Chloroform 1,578,277 5.25 5.02 5.38 105 2.5 pass Tetrahydrofuran 313,088 5.31 5.06 5.43 105 2.3 pass 1,1,1-Trichloroethane 1,595,299 5.13 5.05 5.26 102 2.5 pass Cyclohexane 1,169,329 5.43 5.12 5.63 106 3.6 pass X020524A_5ppbv TO15 LCS LD 1.000 2024-02-05 17:14 TO15_SCNV6.M Air X020524A_5ppbv TO15 LCS 125mL load; Can #2037; GCMSPrepPg1321 QcDup Xavier_X020524A_0124-075.v1 X2400651.D 1.000 Enthalpy Analytical Job No.: 0124-075-1 EPA Method TO-15 Analysis -- Run AECOM - Morrisville 60722767 Frye & Webster DC410064 X020524A_5ppbv TO15 LCS LD EA # 0124-075 Page 68 of 85 Sample Name Sample Info. Sample Type Batch Data File Dilution Pressurization Factor Acquisition Date Instrument Method Matrix Parent Enthalpy ID Target Compound Response Concentration (ppbv) Expected Conc (ppbv) Parent Conc (ppbv) Recovery (%) Diff (%) Flags X020524A_5ppbv TO15 LCS LD 1.000 2024-02-05 17:14 TO15_SCNV6.M Air X020524A_5ppbv TO15 LCS 125mL load; Can #2037; GCMSPrepPg1321 QcDup Xavier_X020524A_0124-075.v1 X2400651.D 1.000 Enthalpy Analytical Job No.: 0124-075-1 EPA Method TO-15 Analysis -- Run AECOM - Morrisville 60722767 Frye & Webster DC410064 X020524A_5ppbv TO15 LCS LD Carbon tetrachloride 1,772,129 5.08 5.04 5.14 101 1.2 pass Benzene 2,064,389 5.06 5.03 5.00 101 1.2 pass 2,2,4-trimethylpentane 3,751,181 5.23 5.17 5.21 101 0.5 pass 1,2-Dichloroethane 1,037,309 4.75 5.14 4.71 92.2 0.7 pass Heptane 721,937 5.05 5.06 4.96 99.6 1.7 pass Trichloroethene 1,105,609 4.59 5.06 4.62 90.8 0.6 pass 1,2-Dichloropropane 860,074 5.07 5.04 5.07 101 0.1 pass Methyl methacrylate 772,394 5.42 5.24 5.35 103 1.2 pass 1,4-Dioxane 489,510 5.20 5.02 5.15 104 1.0 pass Bromodichloromethane 1,661,349 5.04 5.05 5.03 99.8 0.2 pass cis-1,3-Dichloropropene 1,170,571 4.74 4.96 4.73 95.5 0.3 pass Methyl isobutyl ketone 2,358,149 5.20 5.20 5.14 100 1.2 pass Toluene 2,702,313 4.54 5.09 4.59 89.2 1.0 pass trans-1,3-Dichloropropene 1,170,756 4.33 5.16 4.37 84.0 0.9 pass 1,1,2-Trichloroethane 967,253 4.63 5.08 4.63 91.0 0.1 pass Tetrachloroethene 1,683,510 4.88 5.12 4.93 95.4 1.0 pass 2-Hexanone (Methyl butyl ketone)2,242,910 4.89 5.12 4.95 95.5 1.3 pass Dibromochloromethane 2,046,957 4.66 5.04 4.71 92.5 0.9 pass 1,2-Dibromoethane 1,735,924 4.71 5.12 4.75 92.2 0.6 pass Chlorobenzene 2,376,680 4.56 5.15 4.56 88.5 0.0 pass Ethylbenzene 3,482,428 4.49 4.96 4.53 90.4 0.9 pass 1,1,1,2-Tetrachloroethane 1,378,560 4.48 5.04 4.51 88.9 0.7 pass m-/p-Xylenes 2,809,621 4.79 5.07 4.86 94.5 1.4 pass o-Xylene 2,811,752 4.60 5.01 4.64 91.8 1.0 pass Styrene 2,204,319 4.59 4.90 4.65 93.7 1.3 pass Bromoform 2,366,449 5.16 5.02 5.20 103 0.8 pass 1,1,2,2-Tetrachloroethane 2,215,599 4.75 5.06 4.81 94.0 1.2 pass 4-Ethyltoluene 4,037,905 4.60 5.08 4.64 90.4 0.9 pass 2-Chlorotoluene 3,408,023 4.70 5.04 4.74 93.1 0.9 pass 1,3,5-Trimethylbenzene 3,491,409 4.79 5.07 4.77 94.4 0.3 pass 1,2,4-Trimethylbenzene 3,426,069 4.60 5.00 4.60 92.0 0.0 pass 1,3-Dichlorobenzene 2,758,067 4.57 5.08 4.56 89.9 0.1 pass 1,4-Dichlorobenzene 2,777,382 4.52 5.02 4.48 89.9 0.8 pass EA # 0124-075 Page 69 of 85 Sample Name Sample Info. Sample Type Batch Data File Dilution Pressurization Factor Acquisition Date Instrument Method Matrix Parent Enthalpy ID Target Compound Response Concentration (ppbv) Expected Conc (ppbv) Parent Conc (ppbv) Recovery (%) Diff (%) Flags X020524A_5ppbv TO15 LCS LD 1.000 2024-02-05 17:14 TO15_SCNV6.M Air X020524A_5ppbv TO15 LCS 125mL load; Can #2037; GCMSPrepPg1321 QcDup Xavier_X020524A_0124-075.v1 X2400651.D 1.000 Enthalpy Analytical Job No.: 0124-075-1 EPA Method TO-15 Analysis -- Run AECOM - Morrisville 60722767 Frye & Webster DC410064 X020524A_5ppbv TO15 LCS LD Benzyl chloride 3,121,358 4.82 5.03 4.84 95.9 0.4 pass 1,2-Dichlorobenzene 2,686,714 4.62 5.06 4.61 91.2 0.2 pass 1,2,4-Trichlorobenzene 2,280,657 4.54 4.98 4.37 91.1 3.8 pass Hexachlorobutadiene 2,356,942 5.39 4.94 5.14 109 4.6 pass Naphthalene 4,674,334 4.06 5.04 3.92 80.7 3.5 pass 1-Bromopropane 1,599,013 5.15 4.96 5.27 104 2.4 pass 1-Octene 601,035 4.94 4.94 4.88 100 1.1 pass n-Octane 791,905 4.90 5.02 4.93 97.8 0.7 pass Isopropylbenzene 4,123,424 4.65 5.08 4.65 91.4 0.0 pass n-Propylbenzene 4,860,497 4.87 5.13 4.89 95.0 0.3 pass Compound Response Retention Time (min) Concentration (ppbv) Flag Bromochloromethane (IS)866,523 11.02 5.21 pass 1,4-Difluorobenzene (IS)3,258,055 12.44 5.16 pass Chlorobenzene-d5 (IS)2,980,697 16.57 4.92 pass (ND) = Not Detected (J) = Below Calibration Range, (E) = Above Calibration Range, (m) = Manual Integration IS Acceptance Criteria: RT +/- 20 sec, Response +/- 40% EA # 0124-075 Page 70 of 85 Sample Name Sample Info. Sample Type Batch Data File Dilution Pressurization Factor Acquisition Date Instrument Method Matrix Parent Enthalpy ID Target Compound Response Concentration (ppbv) Expected Conc (ppbv) Parent Conc (ppbv) Recovery (%) Diff (%) Flags cis-1,2-Dichloroethene 1,191,790 5.27 5.05 5.23 104 0.8 pass Trichloroethene 1,122,333 4.60 5.06 4.62 91.0 0.4 pass Tetrachloroethene 1,708,005 5.22 5.12 5.16 102 1.2 pass Compound Response Retention Time (min) Concentration (ppbv) Flag Bromochloromethane (IS)849,589 11.02 5.21 pass 1,4-Difluorobenzene (IS)3,299,608 12.44 5.16 pass Chlorobenzene-d5 (IS)2,827,373 16.57 4.92 pass X020624A_5ppbv TO15 LCS LD (ND) = Not Detected (J) = Below Calibration Range, (E) = Above Calibration Range, (m) = Manual Integration IS Acceptance Criteria: RT +/- 20 sec, Response +/- 40% 1.000 2024-02-06 14:21 TO15_SCNV6.M Air X020624A_5ppbv TO15 LCS 125mL load; Can #2037; GCMSPrepPg1321 QcDup Xavier_X020624A_0124-075.v1 X2400673.D 1.000 Enthalpy Analytical Job No.: 0124-075-1 EPA Method TO-15 Analysis -- Run AECOM - Morrisville 60722767 Frye & Webster DC410064 X020624A_5ppbv TO15 LCS LD EA # 0124-075 Page 71 of 85 Sample Name Sample Info. Sample Type Batch Data File Dilution Pressurization Factor Acquisition Date Instrument Method Matrix Parent Enthalpy ID Target Compound Response Concentration (ppbv) Expected Conc (ppbv) Parent Conc (ppbv) Recovery (%) Diff (%) Flags Propylene 664,826 5.29 4.83 5.27 110 0.3 pass Freon 12 (CCl2F2)1,692,655 4.66 4.90 4.61 95.2 1.1 pass Freon 114 (C2Cl2F4)1,821,662 4.85 5.01 4.83 96.8 0.5 pass Chloromethane 620,548 4.75 4.94 4.68 96.0 1.4 pass Chloroethene (Vinyl chloride)317,454 4.11 5.00 4.11 82.4 0.2 pass 1,3-Butadiene 577,436 4.44 4.86 4.31 91.3 3.1 pass Bromomethane 372,571 4.47 4.90 4.38 91.0 1.9 pass, m Chloroethane 301,704 4.87 5.08 4.84 95.9 0.6 pass Bromoethene (Vinyl bromide)676,054 4.54 4.89 4.48 92.8 1.3 pass Freon 11 (CCl3F)1,834,734 5.07 5.28 5.00 96.2 1.5 pass Ethanol 292,211 4.01 4.96 3.86 80.9 3.7 pass Acrolein 231,684 4.51 4.92 4.40 91.6 2.4 pass Freon 113 (C2Cl3F3)1,322,652 5.06 5.08 4.99 99.8 1.5 pass 1,1-Dichloroethene 1,040,157 4.46 5.03 4.40 88.6 1.4 pass Acetone 1,186,736 4.42 5.01 4.38 88.3 1.0 pass Carbon disulfide 1,764,187 4.81 4.98 4.76 96.5 1.0 pass Isopropyl alcohol 1,307,132 4.75 4.98 4.71 95.4 1.0 pass Allyl chloride (3-chloropropene)258,999 4.93 5.04 5.07 97.9 2.8 pass Acetonitrile 639,036 5.17 4.98 5.09 104 1.6 pass Methylene chloride 888,102 4.45 5.12 4.44 87.0 0.3 pass trans-1,2-Dichloroethene 929,546 4.88 5.10 4.81 95.8 1.5 pass Methyl tert-butyl ether 1,638,517 5.10 5.14 5.10 99.2 0.1 pass Acrylonitrile 489,788 4.84 5.09 4.61 95.1 4.9 pass, m Hexane 993,191 5.15 5.08 5.14 101 0.2 pass 1,1-Dichloroethane 1,146,383 4.96 4.96 4.90 99.8 1.2 pass Vinyl acetate 1,895,851 5.04 5.12 5.00 98.5 0.7 pass cis-1,2-Dichloroethene 1,083,484 5.16 5.05 5.07 102 1.8 pass Methyl ethyl ketone (2-Butanone)290,491 5.03 5.17 4.90 97.3 2.7 pass Ethyl acetate 274,662 4.91 4.99 4.87 98.4 0.8 pass Chloroform 1,413,892 5.16 5.02 5.05 103 2.1 pass Tetrahydrofuran 281,602 5.24 5.06 5.21 104 0.7 pass 1,1,1-Trichloroethane 1,417,656 5.01 5.05 5.01 99.2 0.0 pass Cyclohexane 1,050,427 5.36 5.12 5.31 105 0.9 pass X020724A_5ppbv TO15 LCS LD 1.000 2024-02-07 14:37 TO15_SCNV6.M Air X020724A_5ppbv TO15 LCS 125mL load; Can #2037; GCMSPrepPg1321 QcDup Xavier_X020724A_0124-075.v1 X2400697.D 1.000 Enthalpy Analytical Job No.: 0124-075-1 EPA Method TO-15 Analysis -- Run AECOM - Morrisville 60722767 Frye & Webster DC410064 X020724A_5ppbv TO15 LCS LD EA # 0124-075 Page 72 of 85 Sample Name Sample Info. Sample Type Batch Data File Dilution Pressurization Factor Acquisition Date Instrument Method Matrix Parent Enthalpy ID Target Compound Response Concentration (ppbv) Expected Conc (ppbv) Parent Conc (ppbv) Recovery (%) Diff (%) Flags X020724A_5ppbv TO15 LCS LD 1.000 2024-02-07 14:37 TO15_SCNV6.M Air X020724A_5ppbv TO15 LCS 125mL load; Can #2037; GCMSPrepPg1321 QcDup Xavier_X020724A_0124-075.v1 X2400697.D 1.000 Enthalpy Analytical Job No.: 0124-075-1 EPA Method TO-15 Analysis -- Run AECOM - Morrisville 60722767 Frye & Webster DC410064 X020724A_5ppbv TO15 LCS LD Carbon tetrachloride 1,571,497 4.95 5.04 4.89 98.3 1.2 pass Benzene 1,836,268 4.83 5.03 4.84 96.1 0.2 pass 2,2,4-trimethylpentane 3,345,694 5.01 5.17 5.05 96.8 0.8 pass 1,2-Dichloroethane 912,341 4.48 5.14 4.46 87.0 0.5 pass Heptane 642,972 4.82 5.06 4.77 95.2 1.1 pass Trichloroethene 1,021,411 4.55 5.06 4.55 90.0 0.0 pass 1,2-Dichloropropane 760,685 4.81 5.04 4.82 95.5 0.2 pass Methyl methacrylate 688,140 5.18 5.24 5.10 98.9 1.6 pass, m 1,4-Dioxane 446,107 5.09 5.02 4.92 101 3.4 pass Bromodichloromethane 1,490,453 4.85 5.05 4.79 96.0 1.3 pass cis-1,3-Dichloropropene 1,049,629 4.56 4.96 4.58 91.9 0.3 pass Methyl isobutyl ketone 2,149,892 5.09 5.20 5.05 97.9 0.8 pass Toluene 2,434,953 4.56 5.09 4.51 89.5 1.2 pass trans-1,3-Dichloropropene 1,055,304 4.35 5.16 4.25 84.3 2.3 pass 1,1,2-Trichloroethane 871,793 4.64 5.08 4.63 91.3 0.2 pass Tetrachloroethene 1,550,828 5.00 5.12 5.04 97.8 0.8 pass 2-Hexanone (Methyl butyl ketone)2,030,402 4.93 5.12 4.89 96.3 0.6 pass Dibromochloromethane 1,868,123 4.74 5.04 4.75 94.0 0.2 pass 1,2-Dibromoethane 1,588,847 4.81 5.12 4.79 93.9 0.3 pass Chlorobenzene 2,182,400 4.66 5.15 4.60 90.5 1.2 pass Ethylbenzene 3,111,498 4.47 4.96 4.46 90.0 0.2 pass 1,1,1,2-Tetrachloroethane 1,273,720 4.61 5.04 4.59 91.5 0.5 pass m-/p-Xylenes 2,535,808 4.82 5.07 4.82 95.0 0.1 pass o-Xylene 2,541,059 4.63 5.01 4.61 92.4 0.4 pass Styrene 2,018,159 4.68 4.90 4.64 95.5 0.9 pass Bromoform 2,214,432 5.38 5.02 5.33 107 0.9 pass 1,1,2,2-Tetrachloroethane 2,015,544 4.82 5.06 4.81 95.3 0.1 pass 4-Ethyltoluene 3,670,449 4.65 5.08 4.64 91.5 0.3 pass 2-Chlorotoluene 3,069,161 4.71 5.04 4.68 93.3 0.6 pass 1,3,5-Trimethylbenzene 3,156,418 4.82 5.07 4.79 95.0 0.5 pass 1,2,4-Trimethylbenzene 3,107,671 4.65 5.00 4.61 92.9 0.8 pass 1,3-Dichlorobenzene 2,573,579 4.75 5.08 4.68 93.5 1.4 pass 1,4-Dichlorobenzene 2,594,084 4.70 5.02 4.63 93.5 1.5 pass EA # 0124-075 Page 73 of 85 Sample Name Sample Info. Sample Type Batch Data File Dilution Pressurization Factor Acquisition Date Instrument Method Matrix Parent Enthalpy ID Target Compound Response Concentration (ppbv) Expected Conc (ppbv) Parent Conc (ppbv) Recovery (%) Diff (%) Flags X020724A_5ppbv TO15 LCS LD 1.000 2024-02-07 14:37 TO15_SCNV6.M Air X020724A_5ppbv TO15 LCS 125mL load; Can #2037; GCMSPrepPg1321 QcDup Xavier_X020724A_0124-075.v1 X2400697.D 1.000 Enthalpy Analytical Job No.: 0124-075-1 EPA Method TO-15 Analysis -- Run AECOM - Morrisville 60722767 Frye & Webster DC410064 X020724A_5ppbv TO15 LCS LD Benzyl chloride 2,826,901 4.87 5.03 4.79 96.7 1.7 pass 1,2-Dichlorobenzene 2,528,573 4.84 5.06 4.77 95.6 1.4 pass 1,2,4-Trichlorobenzene 2,234,190 4.95 4.98 4.68 99.4 5.7 pass Hexachlorobutadiene 2,265,170 5.77 4.94 5.52 117 4.4 pass Naphthalene 4,569,083 4.42 5.04 4.20 87.8 5.1 pass 1-Bromopropane 1,472,874 5.21 4.96 5.20 105 0.2 pass 1-Octene 524,716 4.80 4.94 4.81 97.3 0.3 pass n-Octane 710,067 4.90 5.02 4.84 97.6 1.1 pass Isopropylbenzene 3,717,958 4.66 5.08 4.66 91.8 0.1 pass n-Propylbenzene 4,391,284 4.90 5.13 4.86 95.6 0.9 pass Compound Response Retention Time (min) Concentration (ppbv) Flag Bromochloromethane (IS)788,768 11.02 5.21 pass 1,4-Difluorobenzene (IS)3,036,867 12.44 5.16 pass Chlorobenzene-d5 (IS)2,676,651 16.57 4.92 pass (ND) = Not Detected (J) = Below Calibration Range, (E) = Above Calibration Range, (m) = Manual Integration IS Acceptance Criteria: RT +/- 20 sec, Response +/- 40% EA # 0124-075 Page 74 of 85 Sample Name Sample Info. Sample Type Batch Data File Dilution Pressurization Factor Acquisition Date Instrument Method Matrix Parent Enthalpy ID Target Compound Response Concentration (ppbv) Expected Conc (ppbv) Parent Conc (ppbv) Recovery (%) Diff (%) Flags Propylene 746,594 5.44 4.83 5.42 113 0.3 pass Freon 12 (CCl2F2)1,865,810 4.71 4.90 4.70 96.2 0.1 pass Freon 114 (C2Cl2F4)2,009,777 4.90 5.01 4.89 97.9 0.2 pass Chloromethane 693,256 4.86 4.94 4.85 98.2 0.1 pass Chloroethene (Vinyl chloride)398,676 4.73 5.00 4.61 94.8 2.7 pass, m 1,3-Butadiene 705,751 4.97 4.86 4.98 102 0.1 pass Bromomethane 404,572 4.44 4.90 4.45 90.6 0.3 pass Chloroethane 335,639 4.96 5.08 5.02 97.7 1.1 pass Bromoethene (Vinyl bromide)750,219 4.61 4.89 4.56 94.3 1.0 pass Freon 11 (CCl3F)2,049,551 5.19 5.28 5.16 98.4 0.6 pass Ethanol 333,249 4.19 4.96 4.12 84.5 1.6 pass Acrolein 260,078 4.64 4.92 4.60 94.2 0.8 pass Freon 113 (C2Cl3F3)1,447,253 5.08 5.08 5.05 100 0.5 pass 1,1-Dichloroethene 1,178,498 4.63 5.03 4.58 92.0 0.9 pass Acetone 1,355,389 4.63 5.01 4.61 92.3 0.3 pass Carbon disulfide 2,001,446 5.00 4.98 5.02 100 0.4 pass Isopropyl alcohol 1,495,127 4.98 4.98 4.90 99.9 1.6 pass Allyl chloride (3-chloropropene)299,518 5.23 5.04 5.29 104 1.2 pass Acetonitrile 715,944 5.31 4.98 5.38 107 1.3 pass, m Methylene chloride 1,003,220 4.61 5.12 4.64 90.0 0.7 pass trans-1,2-Dichloroethene 1,046,813 5.04 5.10 5.03 98.8 0.2 pass Methyl tert-butyl ether 1,846,015 5.26 5.14 5.29 102 0.5 pass Acrylonitrile 552,099 5.00 5.09 4.99 98.2 0.3 pass, m Hexane 1,136,906 5.40 5.08 5.37 106 0.5 pass 1,1-Dichloroethane 1,287,253 5.10 4.96 5.14 103 0.8 pass Vinyl acetate 2,095,273 5.10 5.12 5.02 99.7 1.5 pass, m Methyl ethyl ketone (2-Butanone)335,069 5.32 5.17 5.29 103 0.5 pass Ethyl acetate 316,097 5.18 4.99 5.20 104 0.3 pass Chloroform 1,580,690 5.29 5.02 5.29 105 0.1 pass Tetrahydrofuran 312,318 5.33 5.06 5.31 105 0.4 pass 1,1,1-Trichloroethane 1,593,323 5.16 5.05 5.11 102 0.9 pass Cyclohexane 1,209,128 5.65 5.12 5.62 110 0.5 pass Carbon tetrachloride 1,766,312 5.10 5.04 5.09 101 0.1 pass X020924A_5ppbv TO15 LCS LD 1.000 2024-02-09 04:15 TO15_SCNV6.M Air X020924A_5ppbv TO15 LCS 125mL load; Can #2037; GCMSPrepPg1321 QcDup Xavier_X020924A_0124-075.v2 X2400738.D 1.000 Enthalpy Analytical Job No.: 0124-075-1 EPA Method TO-15 Analysis -- Run AECOM - Morrisville 60722767 Frye & Webster DC410064 X020924A_5ppbv TO15 LCS LD EA # 0124-075 Page 75 of 85 Sample Name Sample Info. Sample Type Batch Data File Dilution Pressurization Factor Acquisition Date Instrument Method Matrix Parent Enthalpy ID Target Compound Response Concentration (ppbv) Expected Conc (ppbv) Parent Conc (ppbv) Recovery (%) Diff (%) Flags X020924A_5ppbv TO15 LCS LD 1.000 2024-02-09 04:15 TO15_SCNV6.M Air X020924A_5ppbv TO15 LCS 125mL load; Can #2037; GCMSPrepPg1321 QcDup Xavier_X020924A_0124-075.v2 X2400738.D 1.000 Enthalpy Analytical Job No.: 0124-075-1 EPA Method TO-15 Analysis -- Run AECOM - Morrisville 60722767 Frye & Webster DC410064 X020924A_5ppbv TO15 LCS LD Benzene 2,096,036 5.01 5.03 4.98 99.6 0.7 pass 2,2,4-trimethylpentane 3,875,336 5.27 5.17 5.24 102 0.6 pass 1,2-Dichloroethane 1,007,746 4.49 5.14 4.51 87.4 0.4 pass Heptane 741,395 5.05 5.06 5.03 99.7 0.4 pass 1,2-Dichloropropane 872,753 5.01 5.04 5.05 99.6 0.7 pass Methyl methacrylate 771,376 5.27 5.24 5.27 101 0.1 pass 1,4-Dioxane 491,640 5.10 5.02 5.18 102 1.7 pass Bromodichloromethane 1,682,954 4.98 5.05 4.92 98.5 1.1 pass cis-1,3-Dichloropropene 1,173,486 4.63 4.96 4.61 93.3 0.5 pass Methyl isobutyl ketone 2,447,292 5.26 5.20 5.26 101 0.1 pass Toluene 2,713,113 4.59 5.09 4.73 90.2 3.0 pass trans-1,3-Dichloropropene 1,163,973 4.33 5.16 4.38 84.0 1.0 pass 1,1,2-Trichloroethane 983,141 4.73 5.08 4.87 93.1 2.8 pass 2-Hexanone (Methyl butyl ketone)2,318,576 5.08 5.12 5.19 99.4 2.1 pass Dibromochloromethane 2,053,078 4.71 5.04 4.86 93.4 3.2 pass 1,2-Dibromoethane 1,737,268 4.75 5.12 4.92 92.8 3.5 pass Chlorobenzene 2,480,640 4.79 5.15 4.73 93.0 1.2 pass Ethylbenzene 3,511,886 4.56 4.96 4.60 91.8 0.9 pass 1,1,1,2-Tetrachloroethane 1,413,874 4.63 5.04 4.65 91.8 0.5 pass m-/p-Xylenes 2,908,122 4.99 5.07 4.98 98.4 0.2 pass o-Xylene 2,858,708 4.71 5.01 4.77 94.0 1.3 pass Styrene 2,235,848 4.69 4.90 4.78 95.6 2.0 pass Bromoform 2,462,207 5.40 5.02 5.42 108 0.4 pass 1,1,2,2-Tetrachloroethane 2,340,129 5.05 5.06 5.01 100.0 0.9 pass 4-Ethyltoluene 3,954,735 4.53 5.08 4.73 89.1 4.3 pass 2-Chlorotoluene 3,314,306 4.60 5.04 4.83 91.1 4.9 pass 1,3,5-Trimethylbenzene 3,439,579 4.75 5.07 4.91 93.6 3.3 pass 1,2,4-Trimethylbenzene 3,456,002 4.68 5.00 4.73 93.4 1.2 pass 1,3-Dichlorobenzene 2,843,381 4.74 5.08 4.77 93.3 0.5 pass 1,4-Dichlorobenzene 2,868,410 4.69 5.02 4.71 93.4 0.3 pass Benzyl chloride 3,158,527 4.91 5.03 5.00 97.7 1.7 pass 1,2-Dichlorobenzene 2,792,212 4.83 5.06 4.83 95.4 0.0 pass 1,2,4-Trichlorobenzene 2,417,839 4.84 4.98 4.72 97.2 2.5 pass EA # 0124-075 Page 76 of 85 Sample Name Sample Info. Sample Type Batch Data File Dilution Pressurization Factor Acquisition Date Instrument Method Matrix Parent Enthalpy ID Target Compound Response Concentration (ppbv) Expected Conc (ppbv) Parent Conc (ppbv) Recovery (%) Diff (%) Flags X020924A_5ppbv TO15 LCS LD 1.000 2024-02-09 04:15 TO15_SCNV6.M Air X020924A_5ppbv TO15 LCS 125mL load; Can #2037; GCMSPrepPg1321 QcDup Xavier_X020924A_0124-075.v2 X2400738.D 1.000 Enthalpy Analytical Job No.: 0124-075-1 EPA Method TO-15 Analysis -- Run AECOM - Morrisville 60722767 Frye & Webster DC410064 X020924A_5ppbv TO15 LCS LD Hexachlorobutadiene 2,497,937 5.75 4.94 5.55 116 3.4 pass Naphthalene 5,039,400 4.41 5.04 4.31 87.5 2.2 pass 1-Bromopropane 1,696,076 5.49 4.96 5.45 111 0.9 pass 1-Octene 606,256 5.01 4.94 5.06 102 0.9 pass n-Octane 784,896 4.89 5.02 5.04 97.5 3.1 pass Isopropylbenzene 4,141,608 4.70 5.08 4.79 92.4 2.1 pass n-Propylbenzene 4,961,183 5.01 5.13 5.05 97.6 0.9 pass Compound Response Retention Time (min) Concentration (ppbv) Flag Bromochloromethane (IS)861,025 11.02 5.21 pass 1,4-Difluorobenzene (IS)3,341,981 12.44 5.16 pass Chlorobenzene-d5 (IS)2,961,563 16.57 4.92 pass (ND) = Not Detected (J) = Below Calibration Range, (E) = Above Calibration Range, (m) = Manual Integration IS Acceptance Criteria: RT +/- 20 sec, Response +/- 40% EA # 0124-075 Page 77 of 85 Narrative Summary EA # 0124-075 Page 78 of 85 Enthalpy Analytical Narrative Summary Company AECOM - Morrisville Client # Frye & Webster – DC410064 Client Project# 60722767 Analyst TDD/KMB Job # 0124-075 Parameters EPA Method TO-15 # Samples 8 (1.4L) Canisters Custody David Myers received the samples on 2/1/2024 after being relinquished by AECOM - Morrisville. The samples were then logged in by Alyssa Miller the same day. The samples were received at ambient temperature and in good condition. Prior to, during, and after analysis, the samples were kept under lock with access only to authorized personnel by Enthalpy Analytical, LLC. Analysis The samples were analyzed for the TO-15 target compound list using the analytical procedures in EPA Method TO-15, Determination of Volatile Organic Compounds (VOCs) In Air Collected In Specially-Prepared Canister And Analyzed by Gas Chromatography/Mass Spectrometry (GC/MS). Upon receipt, the canister pressures were measured and recorded. The canisters were then pressurized with UHP nitrogen and a dilution ratio was calculated for each canister. See the Canister Pressurization Data sheet located in the Results section of this report. The samples were analyzed at various dilutions to bring Tetrachloroethene into the instrument’s calibration range and to achieve the client’s MDL as best as possible. Due to sample matrix interfering with the quantitative analysis of the samples, the lowest dilutions reported for SG-1 and SG-11 are 1,000-fold and 100-fold, respectively. Dilution factors are included in the sample header information. The Agilent Technologies Model 6890N, Gas Chromatograph "Xavier" (S/N US10721018) equipped with a 5975C VL Mass Selective Detector (S/N US71215962) was used for this analysis. The samples and standards were introduced directly to the analyzer using an Entech 7200 Preconcentrator. Calibration The BFB tune analyses associated with the initial and continuing calibrations met all method acceptance criteria. The initial calibration (X100722A-TO15) met the 30% RSD criteria. The initial calibration verification (ICV) met the 70-130% recovery criteria. The continuing calibration (CCV) met the 30% difference criteria. Full calibration data is available upon request. EA # 0124-075 Page 79 of 85 Enthalpy Analytical Narrative Summary (continued) Chromatographic Conditions The acquisition method (TO15_SCNV6.M) may be made available upon request. QC Notes All internal standard area (IS) responses and retention time criteria were met for this analysis. The laboratory duplicate (LD) analyzed with this sample set met the 25% difference criteria for all detected compounds with the exception of Methyl isobutyl ketone at approximately 33%. The LCSs were also analyzed in duplicate and meet the 25% difference criteria for all reported compounds. The laboratory humid blanks associated with this analysis did not contain any of the target analytes at a concentration greater than 3x their MDL. The Laboratory Control Samples (LCS) met the 70-130% recovery criteria for all reported compounds. The samples were analyzed within the 30-day holding time required by the method. Reporting Notes The analysis met the requirements of the TNI Standard. Any deviations from the requirements of the reference method or TNI Standard have been stated above. The results presented in this report are representative of the samples as provided to the laboratory. EA # 0124-075 Page 80 of 85 General Reporting Notes The following are general reporting notes that are applicable to all Enthalpy Analytical, LLC data reports, unless specifically noted otherwise. Any analysis which refers to the method as “Type” represents a planned deviation from the reference method. For instance a Hydrogen Sulfide assay from a Tedlar bag would be labeled as “EPA Method 16-Type” because Tedlar bags are not mentioned as one of the collection options in EPA Method 16. The acronym MDL represents the Minimum Detection Limit. Below this value the laboratory cannot determine the presence of the analyte of interest reliably. The acronym LOQ represents the Limit of Quantification. Below this value the laboratory cannot quantitate the analyte of interest within the criteria of the method. The acronym ND following a value indicates a non-detect or analytical result below the MDL. The letter J in the Qualifier or Flag column in the results indicates that the value is between the MDL and the LOQ. The laboratory can positively identify the analyte of interest as present, but the value should be considered an estimate. The letter E in the Qualifier or Flag column indicates an analytical result exceeding 100% of the highest calibration point. The associated value should be considered as an estimate. Sample results are presented ‘as measured’ for single injection methodologies, or an average value if multiple injections are made. If all injections are below the MDL, the sample is considered non-detect and the ND value is presented. If one, but not all, are below the MDL, the MDL value is used for any injections that are below the MDL. For example, if the MDL is 0.500 and LOQ is 1.00, and the instrument measures 0.355, 0.620, and 0.442 - the result reported is the average of 0.500, 0.620, and 0.500 - - - i.e. 0.540 with a J flag. When a spike recovery (Bag Spike, Collocated Spike Train, or liquid matrix spike) is being calculated, the native (unspiked) sample result is used in the calculations, as long as the value is above the MDL. If a sample is ND, then 0 is used as the native amount (not the MDL value). The acronym DF represents Dilution Factor. This number represents dilution of the sample during the preparation and/or analysis process. The analytical result taken from a laboratory instrument is multiplied by the DF to determine the final undiluted sample results. The addition of MS to the Sample ID represents a Matrix Spike. An aliquot of an actual sample is spiked with a known amount of analyte so that a percent recovery value can be determined. The MS analysis indicates what effect the sample matrix may have on the target analyte, i.e. whether or not anything in the sample matrix interferes with the analysis of the analyte(s). EA # 0124-075 Page 81 of 85 General Reporting Notes (continued) The addition of MSD to the Sample ID represents a Matrix Spike Duplicate. Prepared in the same manner as a MS, the use of duplicate matrix spikes allows further confirmation of laboratory quality by showing the consistency of results gained by performing the same steps multiple times. The addition of LD to the Sample ID represents a Laboratory Duplicate. The analyst prepares an additional aliquot of sample for testing and the results of the duplicate analysis are compared to the initial result. The result should have a difference value of within 10% of the initial result (if the results of the original analysis are greater than the LOQ). The addition of AD to the Sample ID represents an Alternate Dilution. The analyst prepares an additional aliquot at a different dilution factor (usually double the initial factor). This analysis helps confirm that no additional compound is present and coeluting or sharing absorbance with the analyte of interest, as they would have a different response/absorbance than the analyte of interest. The Sample ID LCS represents a Laboratory Control Sample. Clean matrix, similar to the client sample matrix, prepared and analyzed by the laboratory using the same reagents, spiking standards and procedures used for the client samples. The LCS is used to assess the control of the laboratory’s analytical system. Whenever spikes are prepared for our client projects, two spikes are retained as LCSs. The LCSs are labeled with the associated project number and kept in-house at the appropriate temperature conditions. When the project samples are received for analysis, the LCSs are analyzed to confirm that the analyte could be recovered from the media, separate from the samples which were used on the project and which may have been affected by source matrix, sample collection, and/or sample transport. Significant Figures: Where the reported value is much greater than unity (1.00) in the units expressed, the number is rounded to a whole number of units, rather than to 3 significant figures. For example, a value of 10,456.45 ug catch is rounded to 10,456 ug. There are five significant digits displayed, but no confidence should be placed on more than two significant digits. In the case of small numbers, generally 3 significant figures are presented, but still only 2 should be used with confidence. Many neat materials are only certified to 3 digits, and as the mathematically correct final result is always 1 digit less than all its pre-cursors - 2 significant figures are what are most defensible. Manual Integration: The data systems used for processing will flag manually integrated peaks with an “M”. There are several reasons a peak may be manually integrated. These reasons will be identified by the following two letter designations on sample chromatograms, if provided in the report. The peak was not integrated by the software “NI”, the peak was integrated incorrectly by the software “II” or the wrong peak was integrated by the software “WP”. These codes will accompany the analyst’s manual integration stamp placed next to the compound name on the chromatogram. EA # 0124-075 Page 82 of 85 Sample Custody EA # 0124-075 Page 83 of 85 EA # 0124-075 Page 84 of 85 This Is The Last Page Of This Report. EA # 0124-075 Page 85 of 85 AECOM - Morrisville 1600 Perimeter Park Dr. Morrisville, NC 27560 Frye & Webster – DC410064 Client Project# 60722767 Analytical Report (0224-196) EPA Method TO-15 TO-15 Target Compund List Enthalpy Analytical, LLC Phone: (919) 850 - 4392 / Fax: (919) 850 - 9012 / www.enthalpy.com 800-1 Capitola Drive Durham, NC 27713-4385 I certify that to the best of my knowledge all analytical data presented in this report: Have been checked for completeness Are accurate, error-free, and legible Have been conducted in accordance with approved protocol, and that all deviations and analytical problems are summarized in the appropriate narrative(s) This analytical report was prepared in Portable Document Format (.PDF). This report shall not be reproduced except in full without approval of the laboratory. This will provide assurance that parts of a report are not taken out of context. Report Issued: 3/7/24 EA # 0224-196 Page 2 of 25 Results EA # 0224-196 Page 3 of 25 Sample Name Sample Info. Sampling Date Received Date Sample Type Batch Data File Dilution Pressurization Factor Acquisition Date Instrument Method Matrix Analyst Instrument Enthalpy ID Target Compound Concentration (ppbv) RL (ppbv) MDL (ppbv) Concentration (ug/m³) RL (ug/m³) MDL (ug/m³) Flags Propylene 58.1 0.0865 0.0783 99.9 0.149 0.135 Freon 12 (CCl2F2)0.453 0.0877 0.0783 2.24 0.433 0.387 Freon 114 (C2Cl2F4)ND 0.0897 0.0783 ND 0.627 0.547 Chloromethane 0.131 0.0886 0.0783 0.270 0.183 0.162 Chloroethene (Vinyl chloride)ND 0.0895 0.0783 ND 0.229 0.200 1,3-Butadiene 5.27 0.0871 0.0783 11.7 0.193 0.173 Bromomethane ND 0.0878 0.0783 ND 0.341 0.304 Chloroethane ND 0.0910 0.0783 ND 0.240 0.207 Bromoethene (Vinyl bromide)ND 0.0876 0.0783 ND 0.383 0.342 Freon 11 (CCl3F)0.209 0.0945 0.0783 1.17 0.530 0.440 Ethanol 2.27 0.0887 0.0887 4.28 0.167 0.167 Acrolein ND 0.0882 0.0783 ND 0.202 0.180 Freon 113 (C2Cl3F3)ND 0.0909 0.0783 ND 0.696 0.600 1,1-Dichloroethene ND 0.0901 0.0783 ND 0.357 0.310 Acetone 8.63 0.0897 0.0783 20.5 0.213 0.186 Carbon disulfide 17.9 0.0893 0.0783 55.6 0.278 0.244 Isopropyl alcohol 0.955 0.0893 0.0783 2.35 0.219 0.192 Allyl chloride (3-chloropropene)ND 0.0967 0.0783 ND 0.302 0.245 Acetonitrile 0.180 0.0893 0.0783 0.302 0.150 0.131 Methylene chloride 0.576 0.0917 0.0783 2.00 0.318 0.272 trans-1,2-Dichloroethene ND 0.0913 0.0783 ND 0.362 0.310 Methyl tert-butyl ether ND 0.0920 0.0783 ND 0.332 0.282 Acrylonitrile 0.346 0.0912 0.0783 0.751 0.198 0.170 m Hexane 4.08 0.0910 0.0783 14.4 0.320 0.276 1,1-Dichloroethane ND 0.0889 0.0783 ND 0.360 0.317 Vinyl acetate ND 0.0916 0.0783 ND 0.322 0.276 cis-1,2-Dichloroethene 0.111 0.0904 0.0783 0.440 0.358 0.310 Methyl ethyl ketone (2-Butanone)1.29 0.0926 0.0783 3.79 0.273 0.231 Ethyl acetate 0.284 0.0894 0.0783 1.02 0.322 0.282 Chloroform 0.190 0.0898 0.0783 0.929 0.438 0.382 m Tetrahydrofuran 0.0826 0.0906 0.0783 0.243 0.267 0.231 J, m Air TDD Xavier 0224-196.SG-9.Can X2401100.D 1.000 2.239 2024-03-01 09:35 TO15_SCNV6.M 0224-196; 500mL Load; Can#6052/C10126 2024-01-31 11:45 2024-02-29 00:00 Sample Xavier_X022924A_0224-196.v1 Enthalpy Analytical Job No.: 0224-196-1 EPA Method TO-15 Analysis -- Run AECOM - Morrisville 60722767 Frye & Webster DC410064 SG-9 EA # 0224-196 Page 4 of 25 Sample Name Sample Info. Sampling Date Received Date Sample Type Batch Data File Dilution Pressurization Factor Acquisition Date Instrument Method Matrix Analyst Instrument Enthalpy ID Target Compound Concentration (ppbv) RL (ppbv) MDL (ppbv) Concentration (ug/m³) RL (ug/m³) MDL (ug/m³) Flags Air TDD Xavier 0224-196.SG-9.Can X2401100.D 1.000 2.239 2024-03-01 09:35 TO15_SCNV6.M 0224-196; 500mL Load; Can#6052/C10126 2024-01-31 11:45 2024-02-29 00:00 Sample Xavier_X022924A_0224-196.v1 Enthalpy Analytical Job No.: 0224-196-1 EPA Method TO-15 Analysis -- Run AECOM - Morrisville 60722767 Frye & Webster DC410064 SG-9 1,1,1-Trichloroethane ND 0.0904 0.0783 ND 0.493 0.427 Cyclohexane 1.84 0.0918 0.0783 6.32 0.316 0.270 Carbon tetrachloride ND 0.0902 0.0783 ND 0.567 0.493 Benzene 2.20 0.0901 0.0783 7.02 0.288 0.250 2,2,4-trimethylpentane 0.808 0.0926 0.0783 3.77 0.432 0.366 1,2-Dichloroethane ND 0.0921 0.0783 ND 0.373 0.317 Heptane 2.03 0.0907 0.0783 8.31 0.371 0.321 Trichloroethene 0.0978 0.0905 0.0783 0.525 0.486 0.421 1,2-Dichloropropane ND 0.0902 0.0783 ND 0.416 0.362 Methyl methacrylate ND 0.0937 0.0783 ND 0.384 0.321 1,4-Dioxane ND 0.0898 0.0783 ND 0.323 0.282 Bromodichloromethane ND 0.0904 0.0783 ND 0.606 0.525 cis-1,3-Dichloropropene ND 0.0889 0.0783 ND 0.403 0.355 Methyl isobutyl ketone 0.224 0.0930 0.0783 0.917 0.381 0.321 Toluene 3.90 0.0912 0.0783 14.7 0.343 0.295 trans-1,3-Dichloropropene ND 0.0924 0.0783 ND 0.419 0.355 1,1,2-Trichloroethane ND 0.0911 0.0783 ND 0.497 0.427 Tetrachloroethene 7.03 0.0916 0.0783 47.6 0.621 0.531 2-Hexanone (Methyl butyl ketone)0.141 0.0916 0.0783 0.577 0.375 0.321 Dibromochloromethane ND 0.0903 0.0783 ND 0.768 0.667 1,2-Dibromoethane ND 0.0916 0.0783 ND 0.703 0.602 Chlorobenzene ND 0.0922 0.0783 ND 0.424 0.360 Ethylbenzene 0.435 0.0889 0.0783 1.89 0.386 0.340 m 1,1,1,2-Tetrachloroethane ND 0.0903 0.0783 ND 0.619 0.538 m-/p-Xylenes 1.17 0.0908 0.0783 5.10 0.394 0.340 o-Xylene 0.437 0.0897 0.0783 1.90 0.389 0.340 Styrene 0.136 0.0878 0.0783 0.577 0.374 0.334 Bromoform ND 0.0898 0.0783 ND 0.928 0.809 1,1,2,2-Tetrachloroethane ND 0.0905 0.0783 ND 0.621 0.538 4-Ethyltoluene 0.0848 0.0911 0.0783 0.417 0.447 0.385 J, m 2-Chlorotoluene ND 0.0903 0.0783 ND 0.467 0.405 EA # 0224-196 Page 5 of 25 Sample Name Sample Info. Sampling Date Received Date Sample Type Batch Data File Dilution Pressurization Factor Acquisition Date Instrument Method Matrix Analyst Instrument Enthalpy ID Target Compound Concentration (ppbv) RL (ppbv) MDL (ppbv) Concentration (ug/m³) RL (ug/m³) MDL (ug/m³) Flags Air TDD Xavier 0224-196.SG-9.Can X2401100.D 1.000 2.239 2024-03-01 09:35 TO15_SCNV6.M 0224-196; 500mL Load; Can#6052/C10126 2024-01-31 11:45 2024-02-29 00:00 Sample Xavier_X022924A_0224-196.v1 Enthalpy Analytical Job No.: 0224-196-1 EPA Method TO-15 Analysis -- Run AECOM - Morrisville 60722767 Frye & Webster DC410064 SG-9 1,3,5-Trimethylbenzene 0.134 0.0908 0.0783 0.657 0.446 0.385 1,2,4-Trimethylbenzene 0.370 0.0896 0.0783 1.82 0.440 0.385 1,3-Dichlorobenzene ND 0.0910 0.0783 ND 0.547 0.471 1,4-Dichlorobenzene ND 0.0900 0.0783 ND 0.541 0.471 Benzyl chloride ND 0.0901 0.0783 ND 0.466 0.405 1,2-Dichlorobenzene ND 0.0907 0.0783 ND 0.545 0.471 1,2,4-Trichlorobenzene ND 0.0892 0.0783 ND 0.661 0.581 Hexachlorobutadiene ND 0.0885 0.0783 ND 0.943 0.835 Naphthalene ND 0.0902 0.0783 ND 0.472 0.410 1-Bromopropane 0.0845 0.0888 0.0783 0.425 0.447 0.394 J 1-Octene 1.20 0.0884 0.0783 5.49 0.405 0.359 m n-Octane 1.06 0.0922 0.0783 4.96 0.431 0.366 Isopropylbenzene 0.119 0.0910 0.0783 0.587 0.447 0.385 n-Propylbenzene 0.0983 0.0919 0.0783 0.483 0.451 0.385 Compound Response Retention Time (min) Concentration (ppbv) Flag Bromochloromethane (IS)845,157 11.02 5.21 pass 1,4-Difluorobenzene (IS)3,409,280 12.44 5.16 pass Chlorobenzene-d5 (IS)2,883,541 16.57 4.92 pass (ND) = Not Detected (J) = Below Calibration Range, (E) = Above Calibration Range, (m) = Manual Integration IS Acceptance Criteria: RT +/- 20 sec, Response +/- 40% EA # 0224-196 Page 6 of 25 Job No. Company Site Can Number 6052 Job 0124-075 Sample ID SG-9 CleanDate 01/18/2024 LeakCheckDate 01/23/2024 LeakCheckAnalyst pamooney BlankCheckRef Y2400230 Weather Station ID 88 Weather Station Exp.02/02/2024 Transducer ID 3 Transducer Exp.11/17/2024 Can Size (L)1.4 Evac Temp (F)65.9 Evac Pbar (mmHg)761.0 Evac Gauge (mmHg)-761.0 Evac Analyst pamooney Evac Time 01/25/24 10:23 Evac Vol (L)0.000 Recd. Temp (F)66.7 Recd. Pbar (mmHg)757.7 Recd. Gauge (mmHg)-115.0 Recd Vol (L)1.187 P1 Temp (F)66.7 P1 Pbar (mmHg)757.7 P1 Gauge (mmHg)681.0 P1 Analyst pamooney P1 Time 02/01/24 13:12 P1 Fill Gas Nitrogen P1 Vol (L)2.657 P1 DF Override false P1 Dilution Factor 2.239 Enthalpy Analytical -- Canister Pressurization 0224-196 AECOM - Morrisville Frye & Webster DC410064 Canister Pressurization Report 20230531 Report Printed 2/12/2024 12:41:56 PM EA # 0224-196 Page 7 of 25 Lab QC EA # 0224-196 Page 8 of 25 Sample Name Sample Info. Sample Type Batch Data File Dilution Pressurization Factor Acquisition Date Instrument Method Matrix Analyst Instrument Enthalpy ID Target Compound Concentration (ppbv) RL (ppbv) MDL (ppbv) Concentration (ug/m³) RL (ug/m³) MDL (ug/m³) Flags Propylene ND 0.0386 0.0350 ND 0.0665 0.0602 pass Freon 12 (CCl2F2)ND 0.0392 0.0350 ND 0.194 0.173 pass Freon 114 (C2Cl2F4)ND 0.0401 0.0350 ND 0.280 0.245 pass Chloromethane ND 0.0396 0.0350 ND 0.0816 0.0722 pass Chloroethene (Vinyl chloride)ND 0.0400 0.0350 ND 0.102 0.0894 pass 1,3-Butadiene ND 0.0389 0.0350 ND 0.0860 0.0774 pass Bromomethane ND 0.0392 0.0350 ND 0.152 0.136 pass Chloroethane ND 0.0406 0.0350 ND 0.107 0.0923 pass Bromoethene (Vinyl bromide)ND 0.0391 0.0350 ND 0.171 0.153 pass Freon 11 (CCl3F)ND 0.0422 0.0350 ND 0.237 0.197 pass Ethanol 0.0843 0.0396 0.0396 0.159 0.0746 0.0746 pass Acrolein ND 0.0394 0.0350 ND 0.0903 0.0802 pass Freon 113 (C2Cl3F3)ND 0.0406 0.0350 ND 0.311 0.268 pass 1,1-Dichloroethene ND 0.0402 0.0350 ND 0.159 0.139 pass Acetone 0.0821 0.0401 0.0350 0.195 0.0951 0.0831 pass, m Carbon disulfide ND 0.0399 0.0350 ND 0.124 0.109 pass Isopropyl alcohol ND 0.0399 0.0350 ND 0.0980 0.0860 pass Allyl chloride (3-chloropropene)ND 0.0432 0.0350 ND 0.135 0.109 pass Acetonitrile ND 0.0399 0.0350 ND 0.0669 0.0587 pass Methylene chloride ND 0.0410 0.0350 ND 0.142 0.122 pass trans-1,2-Dichloroethene ND 0.0408 0.0350 ND 0.162 0.139 pass Methyl tert-butyl ether ND 0.0411 0.0350 ND 0.148 0.126 pass Acrylonitrile ND 0.0407 0.0350 ND 0.0883 0.0759 pass Hexane ND 0.0406 0.0350 ND 0.143 0.123 pass 1,1-Dichloroethane ND 0.0397 0.0350 ND 0.161 0.142 pass Vinyl acetate ND 0.0409 0.0350 ND 0.144 0.123 pass cis-1,2-Dichloroethene ND 0.0404 0.0350 ND 0.160 0.139 pass Methyl ethyl ketone (2-Butanone)ND 0.0414 0.0350 ND 0.122 0.103 pass Ethyl acetate ND 0.0399 0.0350 ND 0.144 0.126 pass Chloroform ND 0.0401 0.0350 ND 0.196 0.171 pass Tetrahydrofuran ND 0.0405 0.0350 ND 0.119 0.103 pass 1,1,1-Trichloroethane ND 0.0404 0.0350 ND 0.220 0.191 pass Cyclohexane ND 0.0410 0.0350 ND 0.141 0.120 pass Xavier X022924A_Humid Blank #1882 1.000 2024-02-29 21:08 TO15_SCNV6.M Air TDD 500mL load Blank Xavier_X022924A_0224-196.v1 X2401086.D 1.000 Enthalpy Analytical Job No.: 0224-196-1 EPA Method TO-15 Analysis -- Run AECOM - Morrisville 60722767 Frye & Webster DC410064 X022924A_Humid Blank #1882 EA # 0224-196 Page 9 of 25 Sample Name Sample Info. Sample Type Batch Data File Dilution Pressurization Factor Acquisition Date Instrument Method Matrix Analyst Instrument Enthalpy ID Target Compound Concentration (ppbv) RL (ppbv) MDL (ppbv) Concentration (ug/m³) RL (ug/m³) MDL (ug/m³) Flags Xavier X022924A_Humid Blank #1882 1.000 2024-02-29 21:08 TO15_SCNV6.M Air TDD 500mL load Blank Xavier_X022924A_0224-196.v1 X2401086.D 1.000 Enthalpy Analytical Job No.: 0224-196-1 EPA Method TO-15 Analysis -- Run AECOM - Morrisville 60722767 Frye & Webster DC410064 X022924A_Humid Blank #1882 Carbon tetrachloride ND 0.0403 0.0350 ND 0.253 0.220 pass Benzene ND 0.0402 0.0350 ND 0.128 0.112 pass 2,2,4-trimethylpentane ND 0.0414 0.0350 ND 0.193 0.163 pass 1,2-Dichloroethane ND 0.0412 0.0350 ND 0.166 0.142 pass Heptane ND 0.0405 0.0350 ND 0.166 0.143 pass Trichloroethene ND 0.0404 0.0350 ND 0.217 0.188 pass 1,2-Dichloropropane ND 0.0403 0.0350 ND 0.186 0.162 pass Methyl methacrylate ND 0.0419 0.0350 ND 0.171 0.143 pass 1,4-Dioxane ND 0.0401 0.0350 ND 0.144 0.126 pass Bromodichloromethane ND 0.0404 0.0350 ND 0.271 0.234 pass cis-1,3-Dichloropropene ND 0.0397 0.0350 ND 0.180 0.159 pass Methyl isobutyl ketone ND 0.0416 0.0350 ND 0.170 0.143 pass Toluene ND 0.0407 0.0350 ND 0.153 0.132 pass trans-1,3-Dichloropropene ND 0.0413 0.0350 ND 0.187 0.159 pass 1,1,2-Trichloroethane ND 0.0407 0.0350 ND 0.222 0.191 pass Tetrachloroethene ND 0.0409 0.0350 ND 0.277 0.237 pass 2-Hexanone (Methyl butyl ketone)ND 0.0409 0.0350 ND 0.168 0.143 pass Dibromochloromethane ND 0.0403 0.0350 ND 0.343 0.298 pass 1,2-Dibromoethane ND 0.0409 0.0350 ND 0.314 0.269 pass Chlorobenzene ND 0.0412 0.0350 ND 0.190 0.161 pass Ethylbenzene ND 0.0397 0.0350 ND 0.172 0.152 pass 1,1,1,2-Tetrachloroethane ND 0.0403 0.0350 ND 0.277 0.240 pass m-/p-Xylenes ND 0.0406 0.0350 ND 0.176 0.152 pass o-Xylene ND 0.0401 0.0350 ND 0.174 0.152 pass Styrene ND 0.0392 0.0350 ND 0.167 0.149 pass Bromoform ND 0.0401 0.0350 ND 0.414 0.362 pass 1,1,2,2-Tetrachloroethane ND 0.0404 0.0350 ND 0.277 0.240 pass 4-Ethyltoluene ND 0.0407 0.0350 ND 0.200 0.172 pass 2-Chlorotoluene ND 0.0404 0.0350 ND 0.209 0.181 pass 1,3,5-Trimethylbenzene ND 0.0406 0.0350 ND 0.199 0.172 pass 1,2,4-Trimethylbenzene ND 0.0400 0.0350 ND 0.197 0.172 pass 1,3-Dichlorobenzene ND 0.0406 0.0350 ND 0.244 0.210 pass 1,4-Dichlorobenzene ND 0.0402 0.0350 ND 0.242 0.210 pass EA # 0224-196 Page 10 of 25 Sample Name Sample Info. Sample Type Batch Data File Dilution Pressurization Factor Acquisition Date Instrument Method Matrix Analyst Instrument Enthalpy ID Target Compound Concentration (ppbv) RL (ppbv) MDL (ppbv) Concentration (ug/m³) RL (ug/m³) MDL (ug/m³) Flags Xavier X022924A_Humid Blank #1882 1.000 2024-02-29 21:08 TO15_SCNV6.M Air TDD 500mL load Blank Xavier_X022924A_0224-196.v1 X2401086.D 1.000 Enthalpy Analytical Job No.: 0224-196-1 EPA Method TO-15 Analysis -- Run AECOM - Morrisville 60722767 Frye & Webster DC410064 X022924A_Humid Blank #1882 Benzyl chloride ND 0.0402 0.0350 ND 0.208 0.181 pass 1,2-Dichlorobenzene ND 0.0405 0.0350 ND 0.243 0.210 pass 1,2,4-Trichlorobenzene ND 0.0398 0.0350 ND 0.295 0.260 pass Hexachlorobutadiene ND 0.0395 0.0350 ND 0.421 0.373 pass Naphthalene ND 0.0403 0.0350 ND 0.211 0.183 pass 1-Bromopropane ND 0.0397 0.0350 ND 0.199 0.176 pass 1-Octene ND 0.0395 0.0350 ND 0.181 0.161 pass n-Octane ND 0.0412 0.0350 ND 0.192 0.163 pass Isopropylbenzene ND 0.0406 0.0350 ND 0.200 0.172 pass n-Propylbenzene ND 0.0410 0.0350 ND 0.202 0.172 pass Compound Response Retention Time (min) Concentration (ppbv) Flag Bromochloromethane (IS)887,328 11.02 5.21 pass 1,4-Difluorobenzene (IS)3,534,551 12.44 5.16 pass Chlorobenzene-d5 (IS)3,025,656 16.57 4.92 pass (ND) = Not Detected (J) = Below Calibration Range, (E) = Above Calibration Range, (m) = Manual Integration IS Acceptance Criteria: RT +/- 20 sec, Response +/- 40% EA # 0224-196 Page 11 of 25 Flags pass pass pass pass pass pass pass pass pass pass pass pass pass pass pass, m pass pass pass, m pass pass pass pass pass, m pass pass pass pass pass pass pass pass, m pass passCyclohexane1,362,352 6.11 5.12 119 1,1,1-Trichloroethane 1,631,204 5.07 5.05 100 Tetrahydrofuran 338,339 5.54 5.06 109 Chloroform 1,585,900 5.09 5.02 101 Ethyl acetate 309,320 4.86 4.99 97.4 Methyl ethyl ketone (2-Butanone)354,838 5.40 5.17 104 cis-1,2-Dichloroethene 1,392,678 5.83 5.05 115 Vinyl acetate 2,125,113 4.96 5.12 97.0 1,1-Dichloroethane 1,414,679 5.38 4.96 108 Hexane 1,254,934 5.72 5.08 113 Acrylonitrile 607,569 5.28 5.09 104 Methyl tert-butyl ether 1,959,529 5.36 5.14 104 trans-1,2-Dichloroethene 1,163,993 5.37 5.10 105 Methylene chloride 1,089,910 4.80 5.12 93.8 Acetonitrile 678,687 4.83 4.98 96.9 Allyl chloride (3-chloropropene)316,633 5.30 5.04 105 Isopropyl alcohol 1,399,109 4.47 4.98 89.7 Carbon disulfide 2,142,765 5.13 4.98 103 Acetone 1,206,978 3.95 5.01 78.9 1,1-Dichloroethene 1,292,944 4.87 5.03 96.8 Freon 113 (C2Cl3F3)1,471,380 4.95 5.08 97.5 Acrolein 265,744 4.55 4.92 92.3 Ethanol 317,253 3.82 4.96 77.2 Freon 11 (CCl3F)2,067,979 5.02 5.28 95.3 Bromoethene (Vinyl bromide)765,327 4.51 4.89 92.3 Chloroethane 373,168 5.29 5.08 104 Bromomethane 421,436 4.44 4.90 90.5 1,3-Butadiene 594,141 4.02 4.86 82.5 Chloroethene (Vinyl chloride)424,348 4.83 5.00 96.8 Chloromethane 793,328 5.33 4.94 108 Freon 114 (C2Cl2F4)2,070,646 4.85 5.01 96.7 Freon 12 (CCl2F2)1,910,287 4.62 4.90 94.4 Propylene 686,040 4.80 4.83 99.3 Target Compound Response Concentration (ppbv) Expected Conc (ppbv) Recovery (%) Matrix Air Enthalpy ID X022924A_5ppbv TO15 LCS Pressurization Factor 1.000 Acquisition Date 2024-02-29 12:13 Instrument Method TO15_SCNV6.M Batch Xavier_X022924A_0224-196.v1 Data File X2401077.D Dilution 1.000 Sample Name X022924A_5ppbv TO15 LCS Sample Info.125mL load; Can #2037; GCMSPrepPg1321 Sample Type QC Enthalpy Analytical Job No.: 0224-196-1 EPA Method TO-15 Analysis -- Run AECOM - Morrisville 60722767 Frye & Webster DC410064 EA # 0224-196 Page 12 of 25 FlagsTarget Compound Response Concentration (ppbv) Expected Conc (ppbv) Recovery (%) Matrix Air Enthalpy ID X022924A_5ppbv TO15 LCS Pressurization Factor 1.000 Acquisition Date 2024-02-29 12:13 Instrument Method TO15_SCNV6.M Batch Xavier_X022924A_0224-196.v1 Data File X2401077.D Dilution 1.000 Sample Name X022924A_5ppbv TO15 LCS Sample Info.125mL load; Can #2037; GCMSPrepPg1321 Sample Type QC Enthalpy Analytical Job No.: 0224-196-1 EPA Method TO-15 Analysis -- Run AECOM - Morrisville 60722767 Frye & Webster DC410064 pass pass pass pass pass pass pass pass pass pass pass pass pass pass pass pass pass pass pass pass pass pass pass pass pass pass pass pass pass pass pass pass pass1,4-Dichlorobenzene 2,890,197 4.55 5.02 90.6 1,3-Dichlorobenzene 2,923,626 4.69 5.08 92.4 1,2,4-Trimethylbenzene 3,697,576 4.82 5.00 96.2 1,3,5-Trimethylbenzene 3,706,757 4.92 5.07 97.1 2-Chlorotoluene 3,742,885 5.00 5.04 99.0 4-Ethyltoluene 4,461,375 4.92 5.08 96.8 1,1,2,2-Tetrachloroethane 2,389,414 4.97 5.06 98.3 Bromoform 2,454,247 5.18 5.02 103 Styrene 2,383,111 4.81 4.90 98.1 o-Xylene 3,100,540 4.92 5.01 98.1 m-/p-Xylenes 3,078,505 5.09 5.07 100 1,1,1,2-Tetrachloroethane 1,429,799 4.50 5.04 89.4 Ethylbenzene 3,834,323 4.79 4.96 96.5 Chlorobenzene 2,606,639 4.84 5.15 94.1 1,2-Dibromoethane 1,796,049 4.73 5.12 92.4 Dibromochloromethane 2,152,758 4.75 5.04 94.3 2-Hexanone (Methyl butyl ketone)2,188,878 4.62 5.12 90.3 Tetrachloroethene 1,688,291 4.74 5.12 92.7 1,1,2-Trichloroethane 1,027,353 4.76 5.08 93.6 trans-1,3-Dichloropropene 1,310,009 4.70 5.16 91.0 Toluene 2,997,900 4.88 5.09 95.9 Methyl isobutyl ketone 2,303,661 4.65 5.20 89.5 cis-1,3-Dichloropropene 1,318,436 4.89 4.96 98.4 Bromodichloromethane 1,733,887 4.81 5.05 95.3 1,4-Dioxane 512,946 4.99 5.02 99.5 Methyl methacrylate 841,336 5.40 5.24 103 1,2-Dichloropropane 988,086 5.33 5.04 106 Trichloroethene 1,188,301 4.51 5.06 89.3 Heptane 829,437 5.31 5.06 105 1,2-Dichloroethane 1,084,643 4.54 5.14 88.2 2,2,4-trimethylpentane 4,319,610 5.51 5.17 107 Benzene 2,239,631 5.03 5.03 99.9 Carbon tetrachloride 1,864,894 5.16 5.04 103 EA # 0224-196 Page 13 of 25 FlagsTarget Compound Response Concentration (ppbv) Expected Conc (ppbv) Recovery (%) Matrix Air Enthalpy ID X022924A_5ppbv TO15 LCS Pressurization Factor 1.000 Acquisition Date 2024-02-29 12:13 Instrument Method TO15_SCNV6.M Batch Xavier_X022924A_0224-196.v1 Data File X2401077.D Dilution 1.000 Sample Name X022924A_5ppbv TO15 LCS Sample Info.125mL load; Can #2037; GCMSPrepPg1321 Sample Type QC Enthalpy Analytical Job No.: 0224-196-1 EPA Method TO-15 Analysis -- Run AECOM - Morrisville 60722767 Frye & Webster DC410064 pass pass pass pass pass pass pass pass pass pass (ND) = Not Detected (J) = Below Calibration Range, (E) = Above Calibration Range, (m) = Manual Integration IS Acceptance Criteria: RT +/- 20 sec, Response +/- 40% Chlorobenzene-d5 (IS)3,076,119 16.57 4.92 pass 1,4-Difluorobenzene (IS)3,560,492 12.44 5.16 pass Bromochloromethane (IS)897,573 11.02 5.21 pass Compound Response Retention Time (min) Concentration (ppbv) Flag n-Propylbenzene 5,400,304 5.25 5.13 102 Isopropylbenzene 4,413,221 4.82 5.08 94.8 n-Octane 827,685 4.96 5.02 99.0 1-Octene 658,722 5.24 4.94 106 1-Bromopropane 1,592,185 4.95 4.96 99.8 Naphthalene 5,297,744 4.46 5.04 88.6 Hexachlorobutadiene 2,329,481 5.16 4.94 104 1,2,4-Trichlorobenzene 2,545,202 4.91 4.98 98.5 1,2-Dichlorobenzene 2,865,510 4.78 5.06 94.3 Benzyl chloride 3,481,870 5.21 5.03 104 EA # 0224-196 Page 14 of 25 Sample Name Sample Info. Sample Type Batch Data File Dilution Pressurization Factor Acquisition Date Instrument Method Matrix Parent Enthalpy ID Target Compound Response Concentration (ppbv) Expected Conc (ppbv) Parent Conc (ppbv) Recovery (%) Diff (%) Flags Propylene 706,256 4.83 4.83 4.80 100.0 0.7 pass Freon 12 (CCl2F2)1,942,184 4.60 4.90 4.62 93.9 0.6 pass Freon 114 (C2Cl2F4)2,111,283 4.83 5.01 4.85 96.5 0.3 pass Chloromethane 819,337 5.39 4.94 5.33 109 1.0 pass Chloroethene (Vinyl chloride)434,803 4.84 5.00 4.83 97.0 0.2 pass 1,3-Butadiene 616,116 4.07 4.86 4.02 83.7 1.4 pass Bromomethane 437,055 4.50 4.90 4.44 91.8 1.4 pass Chloroethane 381,094 5.29 5.08 5.29 104 0.1 pass Bromoethene (Vinyl bromide)781,096 4.50 4.89 4.51 92.1 0.2 pass Freon 11 (CCl3F)2,110,876 5.02 5.28 5.02 95.1 0.2 pass Ethanol 331,869 3.91 4.96 3.82 78.9 2.3 pass Acrolein 279,027 4.67 4.92 4.55 94.8 2.7 pass Freon 113 (C2Cl3F3)1,506,711 4.96 5.08 4.95 97.7 0.1 pass 1,1-Dichloroethene 1,335,265 4.92 5.03 4.87 97.8 1.0 pass Acetone 1,265,212 4.05 5.01 3.95 80.9 2.5 pass, m Carbon disulfide 2,199,484 5.15 4.98 5.13 103 0.4 pass Isopropyl alcohol 1,461,677 4.57 4.98 4.47 91.6 2.2 pass Allyl chloride (3-chloropropene)340,984 5.58 5.04 5.30 111 5.2 pass Acetonitrile 666,696 4.64 4.98 4.83 93.1 4.0 pass Methylene chloride 1,120,748 4.83 5.12 4.80 94.4 0.6 pass trans-1,2-Dichloroethene 1,198,203 5.41 5.10 5.37 106 0.7 pass Methyl tert-butyl ether 2,045,978 5.47 5.14 5.36 106 2.1 pass Acrylonitrile 630,604 5.36 5.09 5.28 105 1.5 pass, m Hexane 1,298,794 5.79 5.08 5.72 114 1.2 pass 1,1-Dichloroethane 1,448,950 5.38 4.96 5.38 108 0.2 pass Vinyl acetate 2,143,977 4.89 5.12 4.96 95.7 1.3 pass cis-1,2-Dichloroethene 1,411,710 5.78 5.05 5.83 114 0.9 pass Methyl ethyl ketone (2-Butanone)363,360 5.41 5.17 5.40 105 0.1 pass Ethyl acetate 309,857 4.76 4.99 4.86 95.5 2.1 pass Chloroform 1,631,392 5.12 5.02 5.09 102 0.6 pass Tetrahydrofuran 338,945 5.42 5.06 5.54 107 2.0 pass 1,1,1-Trichloroethane 1,649,408 5.01 5.05 5.07 99.2 1.1 pass Cyclohexane 1,404,328 6.16 5.12 6.11 120 0.8 pass X022924A_5ppbv TO15 LCS LD 1.000 2024-02-29 13:01 TO15_SCNV6.M Air X022924A_5ppbv TO15 LCS 125mL load; Can #2037; GCMSPrepPg1321 QcDup Xavier_X022924A_0224-196.v1 X2401078.D 1.000 Enthalpy Analytical Job No.: 0224-196-1 EPA Method TO-15 Analysis -- Run AECOM - Morrisville 60722767 Frye & Webster DC410064 X022924A_5ppbv TO15 LCS LD EA # 0224-196 Page 15 of 25 Sample Name Sample Info. Sample Type Batch Data File Dilution Pressurization Factor Acquisition Date Instrument Method Matrix Parent Enthalpy ID Target Compound Response Concentration (ppbv) Expected Conc (ppbv) Parent Conc (ppbv) Recovery (%) Diff (%) Flags X022924A_5ppbv TO15 LCS LD 1.000 2024-02-29 13:01 TO15_SCNV6.M Air X022924A_5ppbv TO15 LCS 125mL load; Can #2037; GCMSPrepPg1321 QcDup Xavier_X022924A_0224-196.v1 X2401078.D 1.000 Enthalpy Analytical Job No.: 0224-196-1 EPA Method TO-15 Analysis -- Run AECOM - Morrisville 60722767 Frye & Webster DC410064 X022924A_5ppbv TO15 LCS LD Carbon tetrachloride 1,875,923 5.08 5.04 5.16 101 1.6 pass Benzene 2,306,979 5.11 5.03 5.03 102 1.7 pass 2,2,4-trimethylpentane 4,394,641 5.54 5.17 5.51 107 0.4 pass 1,2-Dichloroethane 1,084,878 4.48 5.14 4.54 87.2 1.3 pass Heptane 839,922 5.30 5.06 5.31 105 0.0 pass Trichloroethene 1,198,104 4.49 5.06 4.51 88.9 0.5 pass 1,2-Dichloropropane 999,776 5.32 5.04 5.33 106 0.1 pass Methyl methacrylate 855,210 5.42 5.24 5.40 104 0.4 pass 1,4-Dioxane 516,422 4.96 5.02 4.99 98.9 0.6 pass Bromodichloromethane 1,737,796 4.76 5.05 4.81 94.3 1.0 pass cis-1,3-Dichloropropene 1,327,066 4.86 4.96 4.89 97.8 0.6 pass Methyl isobutyl ketone 2,318,677 4.62 5.20 4.65 88.9 0.6 pass Toluene 3,045,861 4.87 5.09 4.88 95.6 0.3 pass trans-1,3-Dichloropropene 1,317,699 4.63 5.16 4.70 89.8 1.3 pass 1,1,2-Trichloroethane 1,038,043 4.72 5.08 4.76 92.8 0.9 pass Tetrachloroethene 1,709,246 4.71 5.12 4.74 92.0 0.7 pass 2-Hexanone (Methyl butyl ketone)2,196,835 4.55 5.12 4.62 88.9 1.6 pass Dibromochloromethane 2,182,743 4.73 5.04 4.75 93.8 0.5 pass 1,2-Dibromoethane 1,799,242 4.64 5.12 4.73 90.8 1.7 pass Chlorobenzene 2,633,689 4.80 5.15 4.84 93.2 0.9 pass Ethylbenzene 3,907,164 4.79 4.96 4.79 96.4 0.0 pass 1,1,1,2-Tetrachloroethane 1,446,236 4.47 5.04 4.50 88.7 0.8 pass m-/p-Xylenes 3,117,875 5.05 5.07 5.09 99.7 0.7 pass o-Xylene 3,143,412 4.89 5.01 4.92 97.6 0.6 pass Styrene 2,414,739 4.78 4.90 4.81 97.5 0.6 pass Bromoform 2,462,323 5.10 5.02 5.18 102 1.6 pass 1,1,2,2-Tetrachloroethane 2,390,112 4.87 5.06 4.97 96.4 1.9 pass 4-Ethyltoluene 4,500,482 4.87 5.08 4.92 95.8 1.1 pass 2-Chlorotoluene 3,769,669 4.94 5.04 5.00 97.8 1.2 pass 1,3,5-Trimethylbenzene 3,721,107 4.85 5.07 4.92 95.6 1.5 pass 1,2,4-Trimethylbenzene 3,725,607 4.76 5.00 4.82 95.1 1.2 pass 1,3-Dichlorobenzene 2,966,527 4.67 5.08 4.69 92.0 0.5 pass 1,4-Dichlorobenzene 2,968,493 4.59 5.02 4.55 91.3 0.7 pass EA # 0224-196 Page 16 of 25 Sample Name Sample Info. Sample Type Batch Data File Dilution Pressurization Factor Acquisition Date Instrument Method Matrix Parent Enthalpy ID Target Compound Response Concentration (ppbv) Expected Conc (ppbv) Parent Conc (ppbv) Recovery (%) Diff (%) Flags X022924A_5ppbv TO15 LCS LD 1.000 2024-02-29 13:01 TO15_SCNV6.M Air X022924A_5ppbv TO15 LCS 125mL load; Can #2037; GCMSPrepPg1321 QcDup Xavier_X022924A_0224-196.v1 X2401078.D 1.000 Enthalpy Analytical Job No.: 0224-196-1 EPA Method TO-15 Analysis -- Run AECOM - Morrisville 60722767 Frye & Webster DC410064 X022924A_5ppbv TO15 LCS LD Benzyl chloride 3,516,230 5.17 5.03 5.21 103 0.9 pass 1,2-Dichlorobenzene 2,879,125 4.71 5.06 4.78 92.9 1.5 pass 1,2,4-Trichlorobenzene 2,591,437 4.90 4.98 4.91 98.4 0.1 pass Hexachlorobutadiene 2,373,292 5.16 4.94 5.16 104 0.1 pass Naphthalene 5,381,360 4.45 5.04 4.46 88.3 0.4 pass 1-Bromopropane 1,628,789 4.95 4.96 4.95 99.8 0.0 pass 1-Octene 665,857 5.20 4.94 5.24 105 0.8 pass n-Octane 854,491 5.03 5.02 4.96 100 1.3 pass Isopropylbenzene 4,487,551 4.80 5.08 4.82 94.6 0.3 pass n-Propylbenzene 5,400,913 5.15 5.13 5.25 100 1.9 pass Compound Response Retention Time (min) Concentration (ppbv) Flag Bromochloromethane (IS)917,757 11.02 5.21 pass 1,4-Difluorobenzene (IS)3,606,174 12.44 5.16 pass Chlorobenzene-d5 (IS)3,135,942 16.57 4.92 pass (ND) = Not Detected (J) = Below Calibration Range, (E) = Above Calibration Range, (m) = Manual Integration IS Acceptance Criteria: RT +/- 20 sec, Response +/- 40% EA # 0224-196 Page 17 of 25 Narrative Summary EA # 0224-196 Page 18 of 25 Enthalpy Analytical Narrative Summary Company AECOM - Morrisville Client #Frye & Webster – DC410064 Client Project# 60722767 Analyst TDD Job #0224-196 Parameters EPA Method TO-15 # Samples 1 (1.4L) Canister Custody David Myers received the sample on 2/1/2024 after being relinquished by AECOM - Morrisville. The sample was then logged in by Alyssa Miller the same day. The sample was received at ambient temperature and in good condition. After pressurization, the sample was archived until analysis was requested by AECOM – Morrisville on 2/29/24. Prior to, during, and after analysis, the sample was kept under lock with access only to authorized personnel by Enthalpy Analytical, LLC. Analysis The sample was analyzed for the TO-15 target compound list using the analytical procedures in EPA Method TO-15, Determination of Volatile Organic Compounds (VOCs) In Air Collected In Specially-Prepared Canister And Analyzed by Gas Chromatography/Mass Spectrometry (GC/MS). Upon receipt, the canister pressure were measured and recorded. The canister was then pressurized with UHP nitrogen and a dilution ratio was calculated. See the Canister Pressurization Data sheet located in the Results section of this report. The sample was analyzed undiluted. The Agilent Technologies Model 6890N, Gas Chromatograph "Xavier" (S/N US10721018) equipped with a 5975C VL Mass Selective Detector (S/N US71215962) was used for this analysis. The sample and standards were introduced directly to the analyzer using an Entech 7200 Preconcentrator. Calibration The BFB tune analyses associated with the initial and continuing calibrations met all method acceptance criteria. The initial calibration (X100722A-TO15) met the 30% RSD criteria. The initial calibration verification (ICV) met the 70-130% recovery criteria. The continuing calibration (CCV) met the 30% difference criteria. Full calibration data is available upon request. Chromatographic Conditions The acquisition method (TO15_SCNV6.M) may be made available upon request. EA # 0224-196 Page 19 of 25 Enthalpy Analytical Narrative Summary (continued) QC Notes All internal standard area (IS) responses and retention time criteria were met for this analysis. The LCSs was analyzed as the Laboratory Duplicate (LD) and meet the 25% difference criteria for all reported compounds. The laboratory humid blank associated with this analysis did not contain any of the target analytes at a concentration greater than 3x their MDL. The Laboratory Control Sample (LCS) met the 70-130% recovery criteria for all reported compounds. The sample was analyzed within the 30-day holding time required by the method. Reporting Notes The analysis met the requirements of the TNI Standard. Any deviations from the requirements of the reference method or TNI Standard have been stated above. The results presented in this report are representative of the samples as provided to the laboratory. EA # 0224-196 Page 20 of 25 General Reporting Notes The following are general reporting notes that are applicable to all Enthalpy Analytical, LLC data reports, unless specifically noted otherwise. Any analysis which refers to the method as “Type” represents a planned deviation from the reference method. For instance a Hydrogen Sulfide assay from a Tedlar bag would be labeled as “EPA Method 16-Type” because Tedlar bags are not mentioned as one of the collection options in EPA Method 16. The acronym MDL represents the Minimum Detection Limit. Below this value the laboratory cannot determine the presence of the analyte of interest reliably. The acronym LOQ represents the Limit of Quantification. Below this value the laboratory cannot quantitate the analyte of interest within the criteria of the method. The acronym ND following a value indicates a non-detect or analytical result below the MDL. The letter J in the Qualifier or Flag column in the results indicates that the value is between the MDL and the LOQ. The laboratory can positively identify the analyte of interest as present, but the value should be considered an estimate. The letter E in the Qualifier or Flag column indicates an analytical result exceeding 100% of the highest calibration point. The associated value should be considered as an estimate. Sample results are presented ‘as measured’ for single injection methodologies, or an average value if multiple injections are made. If all injections are below the MDL, the sample is considered non-detect and the ND value is presented. If one, but not all, are below the MDL, the MDL value is used for any injections that are below the MDL. For example, if the MDL is 0.500 and LOQ is 1.00, and the instrument measures 0.355, 0.620, and 0.442 - the result reported is the average of 0.500, 0.620, and 0.500 - - - i.e. 0.540 with a J flag. When a spike recovery (Bag Spike, Collocated Spike Train, or liquid matrix spike) is being calculated, the native (unspiked) sample result is used in the calculations, as long as the value is above the MDL. If a sample is ND, then 0 is used as the native amount (not the MDL value). The acronym DF represents Dilution Factor. This number represents dilution of the sample during the preparation and/or analysis process. The analytical result taken from a laboratory instrument is multiplied by the DF to determine the final undiluted sample results. The addition of MS to the Sample ID represents a Matrix Spike. An aliquot of an actual sample is spiked with a known amount of analyte so that a percent recovery value can be determined. The MS analysis indicates what effect the sample matrix may have on the target analyte, i.e. whether or not anything in the sample matrix interferes with the analysis of the analyte(s). EA # 0224-196 Page 21 of 25 General Reporting Notes (continued) The addition of MSD to the Sample ID represents a Matrix Spike Duplicate. Prepared in the same manner as a MS, the use of duplicate matrix spikes allows further confirmation of laboratory quality by showing the consistency of results gained by performing the same steps multiple times. The addition of LD to the Sample ID represents a Laboratory Duplicate. The analyst prepares an additional aliquot of sample for testing and the results of the duplicate analysis are compared to the initial result. The result should have a difference value of within 10% of the initial result (if the results of the original analysis are greater than the LOQ). The addition of AD to the Sample ID represents an Alternate Dilution. The analyst prepares an additional aliquot at a different dilution factor (usually double the initial factor). This analysis helps confirm that no additional compound is present and coeluting or sharing absorbance with the analyte of interest, as they would have a different response/absorbance than the analyte of interest. The Sample ID LCS represents a Laboratory Control Sample. Clean matrix, similar to the client sample matrix, prepared and analyzed by the laboratory using the same reagents, spiking standards and procedures used for the client samples. The LCS is used to assess the control of the laboratory’s analytical system. Whenever spikes are prepared for our client projects, two spikes are retained as LCSs. The LCSs are labeled with the associated project number and kept in-house at the appropriate temperature conditions. When the project samples are received for analysis, the LCSs are analyzed to confirm that the analyte could be recovered from the media, separate from the samples which were used on the project and which may have been affected by source matrix, sample collection, and/or sample transport. Significant Figures: Where the reported value is much greater than unity (1.00) in the units expressed, the number is rounded to a whole number of units, rather than to 3 significant figures. For example, a value of 10,456.45 ug catch is rounded to 10,456 ug. There are five significant digits displayed, but no confidence should be placed on more than two significant digits. In the case of small numbers, generally 3 significant figures are presented, but still only 2 should be used with confidence. Many neat materials are only certified to 3 digits, and as the mathematically correct final result is always 1 digit less than all its pre-cursors - 2 significant figures are what are most defensible. Manual Integration: The data systems used for processing will flag manually integrated peaks with an “M”. There are several reasons a peak may be manually integrated. These reasons will be identified by the following two letter designations on sample chromatograms, if provided in the report. The peak was not integrated by the software “NI”, the peak was integrated incorrectly by the software “II” or the wrong peak was integrated by the software “WP”. These codes will accompany the analyst’s manual integration stamp placed next to the compound name on the chromatogram. EA # 0224-196 Page 22 of 25 Sample Custody EA # 0224-196 Page 23 of 25 EA # 0224-196 Page 24 of 25 This Is The Last Page Of This Report. EA # 0224-196 Page 25 of 25 AECOM - Morrisville 1600 Perimeter Park Drive, Suite 400 Morrisville, NC 27560 Frye & Webster Client Project# 60722767 Analytical Report (0324-073) EPA Method TO-15 TO15 Client Specified Compound List Enthalpy Analytical, LLC Phone: (919) 850 - 4392 / Fax: (919) 850 - 9012 / www.enthalpy.com 800-1 Capitola Drive Durham, NC 27713-4385 I certify that to the best of my knowledge all analytical data presented in this report: Have been checked for completeness Are accurate, error-free, and legible Have been conducted in accordance with approved protocol, and that all deviations and analytical problems are summarized in the appropriate narrative(s) This analytical report was prepared in Portable Document Format (.PDF). This report shall not be reproduced except in full without approval of the laboratory. This will provide assurance that parts of a report are not taken out of context. Report Issued: 4/3/24 EA # 0324-073 Page 2 of 17 Results EA # 0324-073 Page 3 of 17 Sample Name Sample Info. Sampling Date Received Date Sample Type Batch Data File Dilution Pressurization Factor Acquisition Date Instrument Method Matrix Analyst Instrument Enthalpy ID Target Compound Concentration (ppbv) RL (ppbv) MDL (ppbv) Concentration (ug/m³) RL (ug/m³) MDL (ug/m³) Flags Chloroethene (Vinyl chloride) ND 0.0474 0.0415 ND 0.121 0.106 1,1-Dichloroethene ND 0.0477 0.0415 ND 0.189 0.164 trans-1,2-Dichloroethene ND 0.0484 0.0415 ND 0.192 0.164 Methyl tert-butyl ether ND 0.0487 0.0415 ND 0.176 0.149 cis-1,2-Dichloroethene ND 0.0479 0.0415 ND 0.190 0.164 Chloroform 0.0789 0.0476 0.0415 0.385 0.232 0.202 Benzene 0.372 0.0477 0.0415 1.19 0.152 0.132 1,2-Dichloroethane ND 0.0488 0.0415 ND 0.197 0.168 Trichloroethene ND 0.0479 0.0415 ND 0.257 0.223 1,2-Dichloropropane ND 0.0477 0.0415 ND 0.220 0.192 1,1,2-Trichloroethane ND 0.0482 0.0415 ND 0.263 0.226 Tetrachloroethene 0.272 0.0485 0.0415 1.84 0.329 0.281 Ethylbenzene 0.0908 0.0471 0.0415 0.394 0.204 0.180 m-/p-Xylenes 0.275 0.0481 0.0415 1.19 0.209 0.180 o-Xylene 0.145 0.0475 0.0415 0.631 0.206 0.180 1,1,2,2-Tetrachloroethane ND 0.0479 0.0415 ND 0.329 0.285 1,3,5-Trimethylbenzene ND 0.0481 0.0415 ND 0.236 0.204 1,2,4-Trimethylbenzene 0.102 0.0475 0.0415 0.500 0.233 0.204 Naphthalene ND 0.0477 0.0415 ND 0.250 0.217 Compound Response Retention Time (min) Concentration (ppbv) Flag Bromochloromethane (IS) 876,745 11.02 5.21 pass 1,4-Difluorobenzene (IS) 3,463,104 12.44 5.16 pass Chlorobenzene-d5 (IS) 2,917,747 16.57 4.92 pass (ND) = Not Detected (J) = Below Calibration Range, (E) = Above Calibration Range, (m) = Manual Integration IS Acceptance Criteria: RT +/- 20 sec, Response +/- 40% Air KMB Xavier 0324-073.IA-1.Can X2401347.D 0.667 1.777 2024-03-20 02:23 TO15_SCNV6.M 0324-073; *0.667=750mL load; Can #C78149 2024-03-15 08:40 2024-03-19 00:00 Sample Xavier_X031924A_AECOM.v1 Enthalpy Analytical Job No.: 0324-073-1 EPA Method TO-15 Analysis -- Runs AECOM - Morrisville 60722767 Frye & Webster IA-1 EA # 0324-073 Page 4 of 17 Job No. Company Site Can Number C78149 Job 0324-073 Sample ID IA-1 CleanDate 12/07/2023 LeakCheckDate 12/07/2023 LeakCheckAnalyst pamooney BlankCheckRef T2302284 Weather Station ID 97 Weather Station Exp.08/24/2025 Transducer ID 3 Transducer Exp.11/17/2024 Can Size (L)6 Evac Temp (F)69.3 Evac Pbar (mmHg)757.9 Evac Gauge (mmHg)-757.9 Evac Analyst pamooney Evac Time 03/14/24 09:37 Evac Vol (L)0.000 Recd. Temp (F)69.8 Recd. Pbar (mmHg)753.6 Recd. Gauge (mmHg)-204.0 Recd Vol (L)4.324 P1 Temp (F)69.8 P1 Pbar (mmHg)753.6 P1 Gauge (mmHg)223.0 P1 Analyst erwright P1 Time 03/19/24 15:57 P1 Fill Gas Nitrogen P1 Vol (L)7.684 P1 DF Override false P1 Dilution Factor 1.777 Enthalpy Analytical -- Canister Pressurization 0324-073 AECOM - Morrisville Frye & Webster Canister Pressurization Report ver. 20240301 Report Printed 3/20/2024 8:52:02 AM EA # 0324-073 Page 5 of 17 Lab QC EA # 0324-073 Page 6 of 17 Sample Name Sample Info. Sample Type Batch Data File Dilution Pressurization Factor Acquisition Date Instrument Method Matrix Analyst Instrument Enthalpy ID Target Compound Concentration (ppbv) RL (ppbv) MDL (ppbv) Concentration (ug/m³) RL (ug/m³) MDL (ug/m³) Flags Chloroethene (Vinyl chloride) ND 0.0400 0.0350 ND 0.102 0.0894 pass 1,1-Dichloroethene ND 0.0402 0.0350 ND 0.159 0.139 pass trans-1,2-Dichloroethene ND 0.0408 0.0350 ND 0.162 0.139 pass Methyl tert-butyl ether ND 0.0411 0.0350 ND 0.148 0.126 pass cis-1,2-Dichloroethene ND 0.0404 0.0350 ND 0.160 0.139 pass Chloroform ND 0.0401 0.0350 ND 0.196 0.171 pass Benzene ND 0.0402 0.0350 ND 0.128 0.112 pass 1,2-Dichloroethane ND 0.0412 0.0350 ND 0.166 0.142 pass Trichloroethene ND 0.0404 0.0350 ND 0.217 0.188 pass 1,2-Dichloropropane ND 0.0403 0.0350 ND 0.186 0.162 pass 1,1,2-Trichloroethane ND 0.0407 0.0350 ND 0.222 0.191 pass Tetrachloroethene ND 0.0409 0.0350 ND 0.277 0.237 pass Ethylbenzene ND 0.0397 0.0350 ND 0.172 0.152 pass m-/p-Xylenes ND 0.0406 0.0350 ND 0.176 0.152 pass o-Xylene ND 0.0401 0.0350 ND 0.174 0.152 pass 1,1,2,2-Tetrachloroethane ND 0.0404 0.0350 ND 0.277 0.240 pass 1,3,5-Trimethylbenzene ND 0.0406 0.0350 ND 0.199 0.172 pass 1,2,4-Trimethylbenzene ND 0.0400 0.0350 ND 0.197 0.172 pass Naphthalene ND 0.0403 0.0350 ND 0.211 0.183 pass Compound Response Retention Time (min) Concentration (ppbv) Flag Bromochloromethane (IS) 826,484 11.02 5.21 pass 1,4-Difluorobenzene (IS) 3,238,912 12.44 5.16 pass Chlorobenzene-d5 (IS) 2,804,920 16.57 4.92 pass Xavier X031924A_Humid Blank #1861 (ND) = Not Detected (J) = Below Calibration Range, (E) = Above Calibration Range, (m) = Manual Integration IS Acceptance Criteria: RT +/- 20 sec, Response +/- 40% 1.000 2024-03-19 12:34 TO15_SCNV6.M Air KMB 500mL load Blank Xavier_X031924A_AECOM.v1 X2401332.D 1.000 Enthalpy Analytical Job No.: 0324-073-1 EPA Method TO-15 Analysis -- Runs AECOM - Morrisville 60722767 Frye & Webster X031924A_Humid Blank #1861 EA # 0324-073 Page 7 of 17 Flags pass pass pass pass pass pass pass pass pass pass pass pass pass pass pass pass pass pass pass (ND) = Not Detected (J) = Below Calibration Range, (E) = Above Calibration Range, (m) = Manual Integration IS Acceptance Criteria: RT +/- 20 sec, Response +/- 40% Chlorobenzene-d5 (IS) 2,774,911 16.57 4.92 pass 1,4-Difluorobenzene (IS) 3,260,766 12.44 5.16 pass Bromochloromethane (IS) 842,104 11.02 5.21 pass Compound Response Retention Time (min) Concentration (ppbv) Flag Naphthalene 4,826,511 4.51 5.04 89.5 1,2,4-Trimethylbenzene 3,551,389 5.13 5.00 102 1,3,5-Trimethylbenzene 3,559,730 5.24 5.07 103 1,1,2,2-Tetrachloroethane 2,125,256 4.90 5.06 96.9 o-Xylene 2,909,526 5.11 5.01 102 m-/p-Xylenes 2,946,780 5.40 5.07 106 Ethylbenzene 3,532,592 4.89 4.96 98.5 Tetrachloroethene 1,586,414 4.94 5.12 96.5 1,1,2-Trichloroethane 957,467 4.92 5.08 96.7 1,2-Dichloropropane 837,552 4.93 5.04 97.9 Trichloroethene 1,122,159 4.65 5.06 92.1 1,2-Dichloroethane 1,236,038 5.65 5.14 110 Benzene 2,090,743 5.12 5.03 102 Chloroform 1,669,568 5.71 5.02 114 cis-1,2-Dichloroethene 1,289,464 5.75 5.05 114 Methyl tert-butyl ether 2,013,100 5.87 5.14 114 trans-1,2-Dichloroethene 1,111,332 5.47 5.10 107 1,1-Dichloroethene 1,294,179 5.20 5.03 103 Chloroethene (Vinyl chloride) 365,888 4.44 5.00 88.9 Target Compound Response Concentration (ppbv) Expected Conc (ppbv) Recovery (%) Matrix Air Enthalpy ID X031924A_5ppbv TO15 LCS Pressurization Factor 1.000 Acquisition Date 2024-03-19 09:57 Instrument Method TO15_SCNV6.M Batch Xavier_X031924A_AECOM.v1 Data File X2401329.D Dilution 1.000 Sample Name X031924A_5ppbv TO15 LCS Sample Info. 125mL load; Can #2037; GCMSPrepPg1321 Sample Type QC Enthalpy Analytical Job No.: 0324-073-1 EPA Method TO-15 Analysis -- Runs AECOM - Morrisville 60722767 Frye & Webster EA # 0324-073 Page 8 of 17 Sample Name Sample Info. Sample Type Batch Data File Dilution Pressurization Factor Acquisition Date Instrument Method Matrix Parent Enthalpy ID Target Compound Response Concentration (ppbv) Expected Conc (ppbv) Parent Conc (ppbv) Recovery (%) Diff (%) Flags Chloroethene (Vinyl chloride) 369,275 4.51 5.00 4.44 90.2 1.5 pass 1,1-Dichloroethene 1,291,529 5.21 5.03 5.20 104 0.3 pass trans-1,2-Dichloroethene 1,109,983 5.49 5.10 5.47 108 0.4 pass Methyl tert-butyl ether 2,012,277 5.90 5.14 5.87 115 0.5 pass cis-1,2-Dichloroethene 1,288,876 5.78 5.05 5.75 115 0.5 pass Chloroform 1,660,800 5.71 5.02 5.71 114 0.0 pass Benzene 2,094,182 5.07 5.03 5.12 101 1.0 pass 1,2-Dichloroethane 1,249,852 5.65 5.14 5.65 110 0.1 pass Trichloroethene 1,119,365 4.59 5.06 4.65 90.8 1.4 pass 1,2-Dichloropropane 843,273 4.91 5.04 4.93 97.4 0.5 pass 1,1,2-Trichloroethane 941,582 4.77 5.08 4.92 93.8 3.1 pass Tetrachloroethene 1,598,579 4.90 5.12 4.94 95.9 0.7 pass Ethylbenzene 3,513,258 4.80 4.96 4.89 96.6 2.0 pass m-/p-Xylenes 2,941,521 5.31 5.07 5.40 105 1.6 pass o-Xylene 2,915,319 5.05 5.01 5.11 101 1.2 pass 1,1,2,2-Tetrachloroethane 2,149,007 4.88 5.06 4.90 96.6 0.3 pass 1,3,5-Trimethylbenzene 3,551,548 5.16 5.07 5.24 102 1.7 pass 1,2,4-Trimethylbenzene 3,563,201 5.07 5.00 5.13 101 1.1 pass Naphthalene 4,959,138 4.56 5.04 4.51 90.6 1.3 pass Compound Response Retention Time (min) Concentration (ppbv) Flag Bromochloromethane (IS) 837,455 11.02 5.21 pass 1,4-Difluorobenzene (IS) 3,299,519 12.44 5.16 pass Chlorobenzene-d5 (IS) 2,815,055 16.57 4.92 pass X031924A_5ppbv TO15 LCS LD (ND) = Not Detected (J) = Below Calibration Range, (E) = Above Calibration Range, (m) = Manual Integration IS Acceptance Criteria: RT +/- 20 sec, Response +/- 40% 1.000 2024-03-19 10:45 TO15_SCNV6.M Air X031924A_5ppbv TO15 LCS 125mL load; Can #2037; GCMSPrepPg1321 QcDup Xavier_X031924A_AECOM.v1 X2401330.D 1.000 Enthalpy Analytical Job No.: 0324-073-1 EPA Method TO-15 Analysis -- Runs AECOM - Morrisville 60722767 Frye & Webster X031924A_5ppbv TO15 LCS LD EA # 0324-073 Page 9 of 17 Narrative Summary EA # 0324-073 Page 10 of 17 Enthalpy Analytical Narrative Summary Company AECOM - Morrisville Client #Frye & Webster – Client Project# 60722767 Analyst KMB Job #0324-073 Parameters EPA Method TO-15 # Sample 1 (6L) Canister Custody Barry Johnson received the sample on 3/19/24 after being relinquished by AECOM - Morrisville. The sample was then transported to Enthalpy’s Durham location where it was logged in by Alyssa Miller. The sample was received at ambient temperature and in good condition. Prior to, during, and after analysis, the sample was kept under lock with access only to authorized personnel by Enthalpy Analytical, LLC. Analysis The sample was analyzed for a client specified target compound list using the analytical procedures in EPA Method TO-15, Determination of Volatile Organic Compounds (VOCs) In Air Collected In Specially- Prepared Canister And Analyzed by Gas Chromatography/Mass Spectrometry (GC/MS). Upon receipt, the canister pressure was measured and recorded. The canister was then pressurized with UHP nitrogen and a dilution ratio was calculated for each canister. See the Canister Pressurization Data sheet located in the Results section of this report. The sample was analyzed undiluted. The Agilent Technologies Model 6890N, Gas Chromatograph "Xavier" (S/N US10721018) equipped with a 5975C VL Mass Selective Detector (S/N US71215962) was used for this analysis. The sample and standards were introduced directly to the analyzer using an Entech 7200 Preconcentrator. Calibration The BFB tune analyses associated with the initial and continuing calibrations met all method acceptance criteria. The initial calibration (X100722A-TO15) met the 30% RSD criteria. The initial calibration verification (ICV) met the 70-130% recovery criteria. The continuing calibration (CCV) met the 30% difference criteria. Full calibration data is available upon request. Chromatographic Conditions The acquisition method (TO15_SCNV6.M) may be made available upon request. EA # 0324-073 Page 11 of 17 Enthalpy Analytical Narrative Summary (continued) QC Notes All internal standard area (IS) responses and retention time criteria were met for this analysis. The LCS was analyzed as the laboratory duplicate (LD) and met the 25% difference criteria for all reported compounds. The laboratory humid blank associated with this analysis did not contain any of the target analytes at a concentration greater than 3x their MDL. The Laboratory Control Sample (LCS) met the 70-130% recovery criteria for all reported compounds. The sample was analyzed within the 30-day holding time required by the method. Reporting Notes The analysis met the requirements of the TNI Standard. Any deviations from the requirements of the reference method or TNI Standard have been stated above. The results presented in this report are representative of the sample as provided to the laboratory. EA # 0324-073 Page 12 of 17 General Reporting Notes The following are general reporting notes that are applicable to all Enthalpy Analytical, LLC data reports, unless specifically noted otherwise. Any analysis which refers to the method as “Type” represents a planned deviation from the reference method. For instance a Hydrogen Sulfide assay from a Tedlar bag would be labeled as “EPA Method 16-Type” because Tedlar bags are not mentioned as one of the collection options in EPA Method 16. The acronym MDL represents the Minimum Detection Limit. Below this value the laboratory cannot determine the presence of the analyte of interest reliably. The acronym LOQ represents the Limit of Quantification. Below this value the laboratory cannot quantitate the analyte of interest within the criteria of the method. The acronym ND following a value indicates a non-detect or analytical result below the MDL. The letter J in the Qualifier or Flag column in the results indicates that the value is between the MDL and the LOQ. The laboratory can positively identify the analyte of interest as present, but the value should be considered an estimate. The letter E in the Qualifier or Flag column indicates an analytical result exceeding 100% of the highest calibration point. The associated value should be considered as an estimate. Sample results are presented ‘as measured’ for single injection methodologies, or an average value if multiple injections are made. If all injections are below the MDL, the sample is considered non-detect and the ND value is presented. If one, but not all, are below the MDL, the MDL value is used for any injections that are below the MDL. For example, if the MDL is 0.500 and LOQ is 1.00, and the instrument measures 0.355, 0.620, and 0.442 - the result reported is the average of 0.500, 0.620, and 0.500 - - - i.e. 0.540 with a J flag. When a spike recovery (Bag Spike, Collocated Spike Train, or liquid matrix spike) is being calculated, the native (unspiked) sample result is used in the calculations, as long as the value is above the MDL. If a sample is ND, then 0 is used as the native amount (not the MDL value). The acronym DF represents Dilution Factor. This number represents dilution of the sample during the preparation and/or analysis process. The analytical result taken from a laboratory instrument is multiplied by the DF to determine the final undiluted sample results. The addition of MS to the Sample ID represents a Matrix Spike. An aliquot of an actual sample is spiked with a known amount of analyte so that a percent recovery value can be determined. The MS analysis indicates what effect the sample matrix may have on the target analyte, i.e. whether or not anything in the sample matrix interferes with the analysis of the analyte(s). EA # 0324-073 Page 13 of 17 General Reporting Notes (continued) The addition of MSD to the Sample ID represents a Matrix Spike Duplicate. Prepared in the same manner as a MS, the use of duplicate matrix spikes allows further confirmation of laboratory quality by showing the consistency of results gained by performing the same steps multiple times. The addition of LD to the Sample ID represents a Laboratory Duplicate. The analyst prepares an additional aliquot of sample for testing and the results of the duplicate analysis are compared to the initial result. The result should have a difference value of within 10% of the initial result (if the results of the original analysis are greater than the LOQ). The addition of AD to the Sample ID represents an Alternate Dilution. The analyst prepares an additional aliquot at a different dilution factor (usually double the initial factor). This analysis helps confirm that no additional compound is present and coeluting or sharing absorbance with the analyte of interest, as they would have a different response/absorbance than the analyte of interest. The Sample ID LCS represents a Laboratory Control Sample. Clean matrix, similar to the client sample matrix, prepared and analyzed by the laboratory using the same reagents, spiking standards and procedures used for the client samples. The LCS is used to assess the control of the laboratory’s analytical system. Whenever spikes are prepared for our client projects, two spikes are retained as LCSs. The LCSs are labeled with the associated project number and kept in-house at the appropriate temperature conditions. When the project samples are received for analysis, the LCSs are analyzed to confirm that the analyte could be recovered from the media, separate from the samples which were used on the project and which may have been affected by source matrix, sample collection, and/or sample transport. Significant Figures: Where the reported value is much greater than unity (1.00) in the units expressed, the number is rounded to a whole number of units, rather than to 3 significant figures. For example, a value of 10,456.45 ug catch is rounded to 10,456 ug. There are five significant digits displayed, but no confidence should be placed on more than two significant digits. In the case of small numbers, generally 3 significant figures are presented, but still only 2 should be used with confidence. Many neat materials are only certified to 3 digits, and as the mathematically correct final result is always 1 digit less than all its pre-cursors - 2 significant figures are what are most defensible. Manual Integration: The data systems used for processing will flag manually integrated peaks with an “M”. There are several reasons a peak may be manually integrated. These reasons will be identified by the following two letter designations on sample chromatograms, if provided in the report. The peak was not integrated by the software “NI”, the peak was integrated incorrectly by the software “II” or the wrong peak was integrated by the software “WP”. These codes will accompany the analyst’s manual integration stamp placed next to the compound name on the chromatogram. EA # 0324-073 Page 14 of 17 Sample Custody EA # 0324-073 Page 15 of 17 EA # 0324-073 Page 16 of 17 This Is The Last Page Of This Report. EA # 0324-073 Page 17 of 17 Appendix D Monitoring Well Construction Logs asphalt/fill material Red-orange stiff silty CLAY, some saprolite near 10 feet Red-orange stiff silty CLAY, no saprolite, no odor 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 2" PVC Riser Concrete Pad Cap Grout Bentonite Seal 816 814 812 810 808 806 804 802 800 798 796 794 792 CL 0.010" Slotted Screen Filter Pack 608 Elwell Avenue David Hall Geologic Exploration, Inc. GeoProbe HSA 60722767 MW-1 850908.5 1780373 20 1/30/2024 1/31/20248E. Mayle 816.48 10.99 Frye & Webster Cleaners DC410064 PROJECT NAME: LOCATION: DRILLING CONTRACTOR: DRILLING METHOD: DRILLING EQUIPMENT: PROJECT NO.: NORTHING: EASTING: DRILLER: TOTAL DEPTH: WELL/BORING ID: TOC ELEVATION: LOGGED BY:BORE HOLE DIAMETER:DATE STARTED:DATE COMPLETED: De p t h ( f e e t ) Description Well Construction DEPTH TO WATER: El e v a t i o n ( f t M S L ) Greensboro, NC CITY, STATE: ProfileUSCS EMM SDH 60722767MW-1 Frye & Webster Cleaners DC410064 608 Elwell Avenue Greensboro, NC PROJECT NO.: DRAWN BY: CHECKED BY: SHEET ID: ATT. A Well Installation LogNOTES: Gravel Red-yellow very stiff silty CLAY, low-no plasticity, no odor, with saprolite below 5 feet Red-yellow very stiff silty CLAY with slight chlorine odor, moist Red-yellow very stiff silty CLAY with slight chlorine odor, wet 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 2" PVC Riser Concrete Pad Cap Grout Bentonite Seal 818 816 814 812 810 808 806 804 802 800 798 796 794 CL 0.010" Slotted Screen Filter Pack 608 Elwell Avenue David Hall Geologic Exploration, Inc. GeoProbe HSA 60722767 MW-2 850795 1780394.3 20 1/30/2024 1/31/20248E. Mayle 817.606 11.2 Frye & Webster Cleaners DC410064 PROJECT NAME: LOCATION: DRILLING CONTRACTOR: DRILLING METHOD: DRILLING EQUIPMENT: PROJECT NO.: NORTHING: EASTING: DRILLER: TOTAL DEPTH: WELL/BORING ID: TOC ELEVATION: LOGGED BY:BORE HOLE DIAMETER:DATE STARTED:DATE COMPLETED: De p t h ( f e e t ) Description Well Construction DEPTH TO WATER: El e v a t i o n ( f t M S L ) Greensboro, NC CITY, STATE: ProfileUSCS EMM SDH 60722767MW-2 Frye & Webster Cleaners DC410064 608 Elwell Avenue Greensboro, NC PROJECT NO.: DRAWN BY: CHECKED BY: SHEET ID: ATT. A Well Installation LogNOTES: Gravel Red-yellow stiff silty CLAY, low plasticity, no odor 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 2" PVC Riser Concrete Pad Cap Grout Bentonite Seal 820 818 816 814 812 810 808 806 804 802 800 798 796 CL 0.010" Slotted Screen Filter Pack 608 Elwell Avenue David Hall Geologic Exploration, Inc. GeoProbe HSA 60722767 MW-3 850801.2 1780510.9 20 1/30/2024 1/31/20248E. Mayle 820.119 13.42 Frye & Webster Cleaners DC410064 PROJECT NAME: LOCATION: DRILLING CONTRACTOR: DRILLING METHOD: DRILLING EQUIPMENT: PROJECT NO.: NORTHING: EASTING: DRILLER: TOTAL DEPTH: WELL/BORING ID: TOC ELEVATION: LOGGED BY:BORE HOLE DIAMETER:DATE STARTED:DATE COMPLETED: De p t h ( f e e t ) Description Well Construction DEPTH TO WATER: El e v a t i o n ( f t M S L ) Greensboro, NC CITY, STATE: ProfileUSCS EMM SDH 60722767MW-3 Frye & Webster Cleaners DC410064 608 Elwell Avenue Greensboro, NC PROJECT NO.: DRAWN BY: CHECKED BY: SHEET ID: ATT. A Well Installation LogNOTES: Black organic silt, no odor Red-brown silty CLAY, no odor Red-brown silty CLAY with black rocky material, slight odor 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 2" PVC Riser Concrete Pad Cap Grout Bentonite Seal 820 818 816 814 812 810 808 806 804 802 800 798 796 CL 0.010" Slotted Screen Filter Pack 608 Elwell Avenue David Hall Geologic Exploration, Inc. GeoProbe HSA 60722767 MW-4 850924.6 1780511 20 1/30/2024 1/31/20248E. Mayle 820.036 14.35 Frye & Webster Cleaners DC410064 PROJECT NAME: LOCATION: DRILLING CONTRACTOR: DRILLING METHOD: DRILLING EQUIPMENT: PROJECT NO.: NORTHING: EASTING: DRILLER: TOTAL DEPTH: WELL/BORING ID: TOC ELEVATION: LOGGED BY:BORE HOLE DIAMETER:DATE STARTED:DATE COMPLETED: De p t h ( f e e t ) Description Well Construction DEPTH TO WATER: El e v a t i o n ( f t M S L ) Greensboro, NC CITY, STATE: ProfileUSCS EMM SDH 60722767MW-4 Frye & Webster Cleaners DC410064 608 Elwell Avenue Greensboro, NC PROJECT NO.: DRAWN BY: CHECKED BY: SHEET ID: ATT. A Well Installation LogNOTES: WELL CONSTRUCTION RECORD (GW-1) For Internal Use Only: Form GW-1 North Carolina Department of Environmental Quality - Division of Water Resources Revised 6-6-2018 1.Well Contractor Information: Well Contractor Name NC Well Contractor Certification Number Company Name 2.Well Construction Permit #: List all applicable well construction permits (i.e. UIC, County, State, Variance, etc.) 3.Well Use (check well use): Water Supply Well: □Agricultural □Municipal/Public □Geothermal (Heating/Cooling Supply) □Residential Water Supply (single) □Industrial/Commercial □Residential Water Supply (shared) □Irrigation □Wells > 100,000 GPDNon-Water Supply Well: □Monitoring □Recovery Injection Well: □Aquifer Recharge □Groundwater Remediation □Aquifer Storage and Recovery □Salinity Barrier □Aquifer Test □Stormwater Drainage □Experimental Technology □Subsidence Control □Geothermal (Closed Loop)□Tracer □Geothermal (Heating/Cooling Return) □Other (explain under #21 Remarks) 4. Date Well(s) Completed: Well ID# 5a. Well Location: Facility/Owner Name Facility ID# (if applicable) Physical Address, City, and Zip County Parcel Identification No. (PIN) 5b. Latitude and longitude in degrees/minutes/seconds or decimal degrees: (if well field, one lat/long is sufficient) N W 6.Is(are) the well(s): □Permanent or □Temporary 7.Is this a repair to an existing well: □Yes or □No If this is a repair, fill out known well construction information and explain the nature of the repair under #21 remarks section or on the back of this form. 8. For Geoprobe/DPT or Closed-Loop Geothermal Wells having the same construction, only 1 GW-1 is needed. Indicate TOTAL NUMBER of wellsdrilled: 9. Total well depth below land surface: (ft.) For multiple wells list all depths if different (example- 3@200’ and 2@100′) 10.Static water level below top of casing: (ft.) If water level is above casing, use “+” 11. Borehole diameter: (in.) 12. Well construction method:(i.e. auger, rotary, cable, direct push, etc.) FOR WATER SUPPLY WELLS ONLY: 13a. Yield (gpm) Method of test: 13b. Disinfection type: Amount: 22.Certification: Signature of Certified Well Contractor Date By signing this form, I hereby certify that the well(s) was (were) constructed in accordance with 15A NCAC 02C .0100 or 15A NCAC 02C .0200 Well Construction Standards and that a copy of this record has been provided to the well owner. 23.Site diagram or additional well details:You may use the back of this page to provide additional well construction info (add 'See Over' in Remarks Box). You may also attach additional pages if necessary. 24.SUBMITTAL INSTRUCTIONS Submit this GW-1 within 30 days of well completion per the following: 24a. For All Wells: Original form to Division of Water Resources (DWR), Information Processing Unit, 1617 MSC, Raleigh, NC 27699-1617 24b. For Injection Wells: Copy to DWR, Underground Injection Control (IUC) Program, 1636 MSC, Raleigh, NC 27699-1636 24c. For Water Supply and Open-Loop Geothermal Return Wells: Copy to the county environmental health department of the county where installed 24d. For Water Wells producing over 100,000 GPD: Copy to DWR, CCPCUA Permit Program, 1611 MSC, Raleigh, NC 27699-1611 DAVID HALL A - 4459 GEOLOGIC EXPLORATION 0.0 5.0 SCH 40 5.0 20.0 .010 l 0.0 PORTLAND BENTONITE 4.0 20-40 0.0 ASPHALT/GRAVEL/SILTY CLAY 01/29/24 MW-1 FRYE & WEBSTER CLEANERS 608 ELWELL AVENUE GREENSBORO 27405 GUILFORD BENTONITE SEAL ~ 3.0 - 4.0 FEET 36° 05' 08.26" 79° 44' 34.86"02/06/24 l 20.0 10.0 8.0 AUGER PVC SCH 40 PVC 2.0 2.0 3.0 20.0 20.0 FINE SILICA SAND SLURRY WELL CONSTRUCTION RECORD (GW-1) For Internal Use Only: Form GW-1 North Carolina Department of Environmental Quality - Division of Water Resources Revised 6-6-2018 1.Well Contractor Information: Well Contractor Name NC Well Contractor Certification Number Company Name 2.Well Construction Permit #: List all applicable well construction permits (i.e. UIC, County, State, Variance, etc.) 3.Well Use (check well use): Water Supply Well: □Agricultural □Municipal/Public □Geothermal (Heating/Cooling Supply) □Residential Water Supply (single) □Industrial/Commercial □Residential Water Supply (shared) □Irrigation □Wells > 100,000 GPDNon-Water Supply Well: □Monitoring □Recovery Injection Well: □Aquifer Recharge □Groundwater Remediation □Aquifer Storage and Recovery □Salinity Barrier □Aquifer Test □Stormwater Drainage □Experimental Technology □Subsidence Control □Geothermal (Closed Loop)□Tracer □Geothermal (Heating/Cooling Return) □Other (explain under #21 Remarks) 4. Date Well(s) Completed: Well ID# 5a. Well Location: Facility/Owner Name Facility ID# (if applicable) Physical Address, City, and Zip County Parcel Identification No. (PIN) 5b. Latitude and longitude in degrees/minutes/seconds or decimal degrees: (if well field, one lat/long is sufficient) N W 6.Is(are) the well(s): □Permanent or □Temporary 7.Is this a repair to an existing well: □Yes or □No If this is a repair, fill out known well construction information and explain the nature of the repair under #21 remarks section or on the back of this form. 8. For Geoprobe/DPT or Closed-Loop Geothermal Wells having the same construction, only 1 GW-1 is needed. Indicate TOTAL NUMBER of wellsdrilled: 9. Total well depth below land surface: (ft.) For multiple wells list all depths if different (example- 3@200’ and 2@100′) 10.Static water level below top of casing: (ft.) If water level is above casing, use “+” 11. Borehole diameter: (in.) 12. Well construction method:(i.e. auger, rotary, cable, direct push, etc.) FOR WATER SUPPLY WELLS ONLY: 13a. Yield (gpm) Method of test: 13b. Disinfection type: Amount: 22.Certification: Signature of Certified Well Contractor Date By signing this form, I hereby certify that the well(s) was (were) constructed in accordance with 15A NCAC 02C .0100 or 15A NCAC 02C .0200 Well Construction Standards and that a copy of this record has been provided to the well owner. 23.Site diagram or additional well details:You may use the back of this page to provide additional well construction info (add 'See Over' in Remarks Box). You may also attach additional pages if necessary. 24.SUBMITTAL INSTRUCTIONS Submit this GW-1 within 30 days of well completion per the following: 24a. For All Wells: Original form to Division of Water Resources (DWR), Information Processing Unit, 1617 MSC, Raleigh, NC 27699-1617 24b. For Injection Wells: Copy to DWR, Underground Injection Control (IUC) Program, 1636 MSC, Raleigh, NC 27699-1636 24c. For Water Supply and Open-Loop Geothermal Return Wells: Copy to the county environmental health department of the county where installed 24d. For Water Wells producing over 100,000 GPD: Copy to DWR, CCPCUA Permit Program, 1611 MSC, Raleigh, NC 27699-1611 DAVID HALL A - 4459 GEOLOGIC EXPLORATION 0.0 5.0 SCH 40 5.0 20.0 .010 l 0.0 PORTLAND BENTONITE 4.0 20-40 0.0 GRAVEL/SILTY CLAY 01/29/24 MW-2 FRYE & WEBSTER CLEANERS 608 ELWELL AVENUE GREENSBORO 27405 GUILFORD BENTONITE SEAL ~ 3.0 - 4.0 FEET 36° 05' 08.26" 79° 44' 34.86"02/06/24 l 20.0 10.0 8.0 AUGER PVC SCH 40 PVC 2.0 2.0 3.0 20.0 20.0 FINE SILICA SAND SLURRY WELL CONSTRUCTION RECORD (GW-1) For Internal Use Only: Form GW-1 North Carolina Department of Environmental Quality - Division of Water Resources Revised 6-6-2018 1.Well Contractor Information: Well Contractor Name NC Well Contractor Certification Number Company Name 2.Well Construction Permit #: List all applicable well construction permits (i.e. UIC, County, State, Variance, etc.) 3.Well Use (check well use): Water Supply Well: □Agricultural □Municipal/Public □Geothermal (Heating/Cooling Supply) □Residential Water Supply (single) □Industrial/Commercial □Residential Water Supply (shared) □Irrigation □Wells > 100,000 GPDNon-Water Supply Well: □Monitoring □Recovery Injection Well: □Aquifer Recharge □Groundwater Remediation □Aquifer Storage and Recovery □Salinity Barrier □Aquifer Test □Stormwater Drainage □Experimental Technology □Subsidence Control □Geothermal (Closed Loop)□Tracer □Geothermal (Heating/Cooling Return) □Other (explain under #21 Remarks) 4. Date Well(s) Completed: Well ID# 5a. Well Location: Facility/Owner Name Facility ID# (if applicable) Physical Address, City, and Zip County Parcel Identification No. (PIN) 5b. Latitude and longitude in degrees/minutes/seconds or decimal degrees: (if well field, one lat/long is sufficient) N W 6.Is(are) the well(s): □Permanent or □Temporary 7.Is this a repair to an existing well: □Yes or □No If this is a repair, fill out known well construction information and explain the nature of the repair under #21 remarks section or on the back of this form. 8. For Geoprobe/DPT or Closed-Loop Geothermal Wells having the same construction, only 1 GW-1 is needed. Indicate TOTAL NUMBER of wellsdrilled: 9. Total well depth below land surface: (ft.) For multiple wells list all depths if different (example- 3@200’ and 2@100′) 10.Static water level below top of casing: (ft.) If water level is above casing, use “+” 11. Borehole diameter: (in.) 12. Well construction method:(i.e. auger, rotary, cable, direct push, etc.) FOR WATER SUPPLY WELLS ONLY: 13a. Yield (gpm) Method of test: 13b. Disinfection type: Amount: 22.Certification: Signature of Certified Well Contractor Date By signing this form, I hereby certify that the well(s) was (were) constructed in accordance with 15A NCAC 02C .0100 or 15A NCAC 02C .0200 Well Construction Standards and that a copy of this record has been provided to the well owner. 23.Site diagram or additional well details:You may use the back of this page to provide additional well construction info (add 'See Over' in Remarks Box). You may also attach additional pages if necessary. 24.SUBMITTAL INSTRUCTIONS Submit this GW-1 within 30 days of well completion per the following: 24a. For All Wells: Original form to Division of Water Resources (DWR), Information Processing Unit, 1617 MSC, Raleigh, NC 27699-1617 24b. For Injection Wells: Copy to DWR, Underground Injection Control (IUC) Program, 1636 MSC, Raleigh, NC 27699-1636 24c. For Water Supply and Open-Loop Geothermal Return Wells: Copy to the county environmental health department of the county where installed 24d. For Water Wells producing over 100,000 GPD: Copy to DWR, CCPCUA Permit Program, 1611 MSC, Raleigh, NC 27699-1611 DAVID HALL A - 4459 GEOLOGIC EXPLORATION 0.0 5.0 SCH 40 5.0 20.0 .010 l 0.0 PORTLAND BENTONITE 4.0 20-40 0.0 GRAVEL/SILTY CLAY 01/29/24 MW-3 FRYE & WEBSTER CLEANERS 608 ELWELL AVENUE GREENSBORO 27405 GUILFORD BENTONITE SEAL ~ 3.0 - 4.0 FEET 36° 05' 08.26" 79° 44' 34.86"02/06/24 l 20.0 10.0 8.0 AUGER PVC SCH 40 PVC 2.0 2.0 3.0 20.0 20.0 FINE SILICA SAND SLURRY WELL CONSTRUCTION RECORD (GW-1) For Internal Use Only: Form GW-1 North Carolina Department of Environmental Quality - Division of Water Resources Revised 6-6-2018 1.Well Contractor Information: Well Contractor Name NC Well Contractor Certification Number Company Name 2.Well Construction Permit #: List all applicable well construction permits (i.e. UIC, County, State, Variance, etc.) 3.Well Use (check well use): Water Supply Well: □Agricultural □Municipal/Public □Geothermal (Heating/Cooling Supply) □Residential Water Supply (single) □Industrial/Commercial □Residential Water Supply (shared) □Irrigation □Wells > 100,000 GPDNon-Water Supply Well: □Monitoring □Recovery Injection Well: □Aquifer Recharge □Groundwater Remediation □Aquifer Storage and Recovery □Salinity Barrier □Aquifer Test □Stormwater Drainage □Experimental Technology □Subsidence Control □Geothermal (Closed Loop)□Tracer □Geothermal (Heating/Cooling Return) □Other (explain under #21 Remarks) 4. Date Well(s) Completed: Well ID# 5a. Well Location: Facility/Owner Name Facility ID# (if applicable) Physical Address, City, and Zip County Parcel Identification No. (PIN) 5b. Latitude and longitude in degrees/minutes/seconds or decimal degrees: (if well field, one lat/long is sufficient) N W 6.Is(are) the well(s): □Permanent or □Temporary 7.Is this a repair to an existing well: □Yes or □No If this is a repair, fill out known well construction information and explain the nature of the repair under #21 remarks section or on the back of this form. 8. For Geoprobe/DPT or Closed-Loop Geothermal Wells having the same construction, only 1 GW-1 is needed. Indicate TOTAL NUMBER of wellsdrilled: 9. Total well depth below land surface: (ft.) For multiple wells list all depths if different (example- 3@200’ and 2@100′) 10.Static water level below top of casing: (ft.) If water level is above casing, use “+” 11. Borehole diameter: (in.) 12. Well construction method:(i.e. auger, rotary, cable, direct push, etc.) FOR WATER SUPPLY WELLS ONLY: 13a. Yield (gpm) Method of test: 13b. Disinfection type: Amount: 22.Certification: Signature of Certified Well Contractor Date By signing this form, I hereby certify that the well(s) was (were) constructed in accordance with 15A NCAC 02C .0100 or 15A NCAC 02C .0200 Well Construction Standards and that a copy of this record has been provided to the well owner. 23.Site diagram or additional well details:You may use the back of this page to provide additional well construction info (add 'See Over' in Remarks Box). You may also attach additional pages if necessary. 24.SUBMITTAL INSTRUCTIONS Submit this GW-1 within 30 days of well completion per the following: 24a. For All Wells: Original form to Division of Water Resources (DWR), Information Processing Unit, 1617 MSC, Raleigh, NC 27699-1617 24b. For Injection Wells: Copy to DWR, Underground Injection Control (IUC) Program, 1636 MSC, Raleigh, NC 27699-1636 24c. For Water Supply and Open-Loop Geothermal Return Wells: Copy to the county environmental health department of the county where installed 24d. For Water Wells producing over 100,000 GPD: Copy to DWR, CCPCUA Permit Program, 1611 MSC, Raleigh, NC 27699-1611 DAVID HALL A - 4459 GEOLOGIC EXPLORATION 0.0 5.0 SCH 40 5.0 20.0 .010 l 0.0 PORTLAND BENTONITE 4.0 20-40 0.0 GRAVEL/SILTY CLAY 01/29/24 MW-4 FRYE & WEBSTER CLEANERS 608 ELWELL AVENUE GREENSBORO 27405 GUILFORD BENTONITE SEAL ~ 3.0 - 4.0 FEET 36° 05' 08.26" 79° 44' 34.86"02/06/24 l 20.0 10.0 8.0 AUGER PVC SCH 40 PVC 2.0 2.0 3.0 20.0 20.0 FINE SILICA SAND SLURRY Appendix E Groundwater Sampling Forms Appendix F DSCA Indoor Air Risk Calculators DSCA ID No: Name/Address of DSCA Site: Name/Address of Sampling Location: Sampling Date:3/15/2024 Sample ID:IA-1 All concentrations are in ug/m3 CAS # Chemical Name: Indoor Air Concentration (ug/m3) Indoor Air Screening Level for Carcinogens @ TCR = 1E-06 Indoor Air Screening Level for Non- Carcinogens @ THQ = 0.2 Calculated Carcinogenic Risk Calculated Non- Carcinogenic Hazard Quotient 71-43-2 Benzene 1.19 3.6E-01 6.3E+00 3.3E-06 3.8E-02 67-66-3 Chloroform 0.385 1.2E-01 2.0E+01 3.2E-06 3.8E-03 100-41-4 Ethylbenzene 0.394 1.1E+00 2.1E+02 3.5E-07 3.8E-04 127-18-4 Tetrachloroethylene 1.84 1.1E+01 8.3E+00 1.7E-07 4.4E-02 95-63-6 Trimethylbenzene, 1,2,4-0.5 -1.3E+01 8.0E-03 108-38-3 Xylene, m-0.595 -2.1E+01 5.7E-03 95-47-6 Xylene, o-0.631 -2.1E+01 6.1E-03 106-42-3 Xylene, p-0.595 -2.1E+01 5.7E-03 Cumulative: 7.0E-06 1.1E-01 Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Risks are calculated for these values if indoor air concentrations are entered and indoor air screening levels have been established, but it should be noted that detections of these chemicals are likely not associated with vapor intrusion. Frye & Webster Cleaners / 608 Elwell Avenue, Greensboro, Guilford Co., NC Frye & Webster Cleaners / 608 Elwell Avenue, Greensboro, Guilford Co., NC DSCA Indoor Air Risk Calculator - Cumulative Risk for Resident Version 11, July 2023 DC410064 DSCA ID No: Name/Address of DSCA Site: Name/Address of Sampling Location: Sampling Date:3/15/2024 Sample ID:IA-1 All concentrations are in ug/m3 CAS # Chemical Name: Indoor Air Concentration (ug/m3) Indoor Air Screening Level for Carcinogens @ TCR = 1E-06 Indoor Air Screening Level for Non- Carcinogens @ THQ = 0.2 Calculated Carcinogenic Risk Calculated Non- Carcinogenic Hazard Quotient 71-43-2 Benzene 1.19 1.6E+00 2.6E+01 7.6E-07 9.1E-03 67-66-3 Chloroform 0.385 5.3E-01 8.6E+01 7.2E-07 9.0E-04 100-41-4 Ethylbenzene 0.394 4.9E+00 8.8E+02 8.0E-08 9.0E-05 127-18-4 Tetrachloroethylene 1.84 4.7E+01 3.5E+01 3.9E-08 1.1E-02 95-63-6 Trimethylbenzene, 1,2,4-0.5 -5.3E+01 1.9E-03 108-38-3 Xylene, m-0.595 -8.8E+01 1.4E-03 95-47-6 Xylene, o-0.631 -8.8E+01 1.4E-03 106-42-3 Xylene, p-0.595 -8.8E+01 1.4E-03 Cumulative: 1.6E-06 2.7E-02 Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Risks are calculated for these values if indoor air concentrations are entered and indoor air screening levels have been established, but it should be noted that detections of these chemicals are likely not associated with vapor intrusion. DSCA Indoor Air Risk Calculator - Cumulative Risk for Non-Residential Worker Version 11, July 2023 DC410064 Frye & Webster Cleaners / 608 Elwell Avenue, Greensboro, Guilford Co., NC Frye & Webster Cleaners / 608 Elwell Avenue, Greensboro, Guilford Co., NC DSCA ID No: Name/Address of DSCA Site:Frye & Webster Cleaners/608 Elwell Avenue, Greensboro, NC Name/Address of Sampling Location:Frye & Webster Cleaners/608 Elwell Avenue, Greensboro, NC Sampling Date:1/31/2024 Sample ID:SG-1 All concentrations are in ug/m3 CAS # Chemical Name: Soil Gas Concentration (ug/m3) Calculated Indoor Air Concentration (ug/m3) Indoor Air Screening Level for Carcinogens @ TCR = 1E-06 Indoor Air Screening Level for Non- Carcinogens @ THQ = 0.2 Calculated Carcinogenic Risk Calculated Non- Carcinogenic Hazard Quotient 67-66-3 Chloroform 1165 34.95 1.2E-01 2.0E+01 2.9E-04 3.4E-01 110-82-7 Cyclohexane 686 20.58 -1.3E+03 3.3E-03 156-59-2 Dichloroethylene, cis-1,2-23276 698.28 -8.3E+00 1.7E+01 115-07-1 Propylene 262 7.86 -6.3E+02 2.5E-03 79-34-5 Tetrachloroethane, 1,1,2,2-1336 40.08 4.8E-02 -8.3E-04 127-18-4 Tetrachloroethylene 2043185 61295.55 1.1E+01 8.3E+00 5.7E-03 1.5E+03 79-01-6 Trichloroethylene 64278 1928.34 4.8E-01 4.2E-01 4.0E-03 9.2E+02 Cumulative: 1.1E-02 2.4E+03 DSCA Soil Gas Risk Calculator - Cumulative Risk for Resident Version 11, July 2023 DC410064 Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals. DSCA ID No: Name/Address of DSCA Site:Frye & Webster Cleaners/608 Elwell Avenue, Greensboro, NC Name/Address of Sampling Location:Frye & Webster Cleaners/608 Elwell Avenue, Greensboro, NC Sampling Date:1/31/2024 Sample ID:SG-1 All concentrations are in ug/m3 CAS # Chemical Name: Soil Gas Concentration (ug/m3) Calculated Indoor Air Concentration (ug/m3) Indoor Air Screening Level for Carcinogens @ TCR = 1E-06 Indoor Air Screening Level for Non- Carcinogens @ THQ = 0.2 Calculated Carcinogenic Risk Calculated Non- Carcinogenic Hazard Quotient 67-66-3 Chloroform 1165 11.65 5.3E-01 8.6E+01 2.2E-05 2.7E-02 110-82-7 Cyclohexane 686 6.86 -5.3E+03 2.6E-04 156-59-2 Dichloroethylene, cis-1,2-23276 232.76 -3.5E+01 1.3E+00 115-07-1 Propylene 262 2.62 -2.6E+03 2.0E-04 79-34-5 Tetrachloroethane, 1,1,2,2-1336 13.36 2.1E-01 -6.3E-05 127-18-4 Tetrachloroethylene 2043185 20431.85 4.7E+01 3.5E+01 4.3E-04 1.2E+02 79-01-6 Trichloroethylene 64278 642.78 3.0E+00 1.8E+00 2.1E-04 7.3E+01 Cumulative: 7.3E-04 1.9E+02 DSCA Soil Gas Risk Calculator - Cumulative Risk for Non-Residential Worker Version 11, July 2023 DC410064 Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals. DSCA ID No: Name/Address of DSCA Site:Frye & Webster Cleaners/608 Elwell Avenue, Greensboro, NC Name/Address of Sampling Location:Frye & Webster Cleaners/608 Elwell Avenue, Greensboro, NC Sampling Date:1/31/2024 Sample ID:SG-2 All concentrations are in ug/m3 CAS # Chemical Name: Soil Gas Concentration (ug/m3) Calculated Indoor Air Concentration (ug/m3) Indoor Air Screening Level for Carcinogens @ TCR = 1E-06 Indoor Air Screening Level for Non- Carcinogens @ THQ = 0.2 Calculated Carcinogenic Risk Calculated Non- Carcinogenic Hazard Quotient 67-64-1 Acetone 22.9 0.687 -- 107-02-8 Acrolein 0.426 0.01278 -4.2E-03 6.1E-01 71-43-2 Benzene 1.5 0.045 3.6E-01 6.3E+00 1.3E-07 1.4E-03 106-99-0 Butadiene, 1,3-1.39 0.0417 9.4E-02 4.2E-01 4.5E-07 2.0E-02 75-15-0 Carbon Disulfide 1.18 0.0354 -1.5E+02 4.8E-05 67-66-3 Chloroform 1.84 0.0552 1.2E-01 2.0E+01 4.5E-07 5.4E-04 74-87-3 Chloromethane 0.862 0.02586 -1.9E+01 2.8E-04 110-82-7 Cyclohexane 0.937 0.02811 -1.3E+03 4.5E-06 75-71-8 Dichlorodifluoromethane 2.33 0.0699 -2.1E+01 6.7E-04 111-77-3 Ethanol, 2-(2-methoxyethoxy)-9.81 0.2943 -- 141-78-6 Ethyl Acetate 1.45 0.0435 -1.5E+01 6.0E-04 100-41-4 Ethylbenzene 5.84 0.1752 1.1E+00 2.1E+02 1.6E-07 1.7E-04 142-82-5 Heptane, N-1.12 0.0336 -8.3E+01 8.1E-05 E5241997 Hexane, Commercial 1.79 0.0537 1.4E+01 1.3E+02 3.8E-09 8.6E-05 591-78-6 Hexanone, 2-2.46 0.0738 -6.3E+00 2.4E-03 67-63-0 Isopropanol 2.66 0.0798 -4.2E+01 3.8E-04 78-93-3 Methyl Ethyl Ketone (2-Butanone)1.11 0.0333 -1.0E+03 6.4E-06 108-10-1 Methyl Isobutyl Ketone (4-methyl-2-pentanone)4.6 0.138 - 6.3E+02 4.4E-05 80-62-6 Methyl Methacrylate 1.35 0.0405 -1.5E+02 5.5E-05 75-09-2 Methylene Chloride 1.86 0.0558 1.0E+02 1.3E+02 5.5E-10 8.9E-05 91-20-3 ~Naphthalene 1.76 0.0528 8.3E-02 6.3E-01 6.4E-07 1.7E-02 103-65-1 Propyl benzene 1.11 0.0333 -2.1E+02 3.2E-05 115-07-1 Propylene 21.6 0.648 -6.3E+02 2.1E-04 100-42-5 Styrene 0.503 0.01509 -2.1E+02 1.4E-05 127-18-4 Tetrachloroethylene 871 26.13 1.1E+01 8.3E+00 2.4E-06 6.3E-01 108-88-3 Toluene 15.5 0.465 -1.0E+03 8.9E-05 79-01-6 Trichloroethylene 5.14 0.1542 4.8E-01 4.2E-01 3.2E-07 7.4E-02 75-69-4 Trichlorofluoromethane 1.24 0.0372 -- 95-63-6 Trimethylbenzene, 1,2,4-15.4 0.462 -1.3E+01 7.4E-03 108-67-8 Trimethylbenzene, 1,3,5-3.49 0.1047 -1.3E+01 1.7E-03 25167-70-8 Trimethylpentene, 2,4,4-0.56 0.0168 -- 1330-20-7 Xylenes 31.63 0.9489 -2.1E+01 9.1E-03 Cumulative: 4.6E-06 1.4E+00 DSCA Soil Gas Risk Calculator - Cumulative Risk for Resident Version 11, July 2023 DC410064 Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals. DSCA ID No: Name/Address of DSCA Site:Frye & Webster Cleaners/608 Elwell Avenue, Greensboro, NC Name/Address of Sampling Location:Frye & Webster Cleaners/608 Elwell Avenue, Greensboro, NC Sampling Date:1/31/2024 Sample ID:SG-2 All concentrations are in ug/m3 CAS # Chemical Name: Soil Gas Concentration (ug/m3) Calculated Indoor Air Concentration (ug/m3) Indoor Air Screening Level for Carcinogens @ TCR = 1E-06 Indoor Air Screening Level for Non- Carcinogens @ THQ = 0.2 Calculated Carcinogenic Risk Calculated Non- Carcinogenic Hazard Quotient 67-64-1 Acetone 22.9 0.229 -- 107-02-8 Acrolein 0.426 0.00426 -1.8E-02 4.9E-02 71-43-2 Benzene 1.5 0.015 1.6E+00 2.6E+01 9.5E-09 1.1E-04 106-99-0 Butadiene, 1,3-1.39 0.0139 4.1E-01 1.8E+00 3.4E-08 1.6E-03 75-15-0 Carbon Disulfide 1.18 0.0118 -6.1E+02 3.8E-06 67-66-3 Chloroform 1.84 0.0184 5.3E-01 8.6E+01 3.5E-08 4.3E-05 74-87-3 Chloromethane 0.862 0.00862 -7.9E+01 2.2E-05 110-82-7 Cyclohexane 0.937 0.00937 -5.3E+03 3.6E-07 75-71-8 Dichlorodifluoromethane 2.33 0.0233 -8.8E+01 5.3E-05 111-77-3 Ethanol, 2-(2-methoxyethoxy)-9.81 0.0981 -- 141-78-6 Ethyl Acetate 1.45 0.0145 -6.1E+01 4.7E-05 100-41-4 Ethylbenzene 5.84 0.0584 4.9E+00 8.8E+02 1.2E-08 1.3E-05 142-82-5 Heptane, N-1.12 0.0112 -3.5E+02 6.4E-06 E5241997 Hexane, Commercial 1.79 0.0179 6.1E+01 5.3E+02 2.9E-10 6.8E-06 591-78-6 Hexanone, 2-2.46 0.0246 -2.6E+01 1.9E-04 67-63-0 Isopropanol 2.66 0.0266 -1.8E+02 3.0E-05 78-93-3 Methyl Ethyl Ketone (2-Butanone)1.11 0.0111 -4.4E+03 5.1E-07 108-10-1 Methyl Isobutyl Ketone (4-methyl-2-pentanone)1.12 0.0112 - 2.6E+03 8.5E-07 80-62-6 Methyl Methacrylate 1.35 0.0135 -6.1E+02 4.4E-06 75-09-2 Methylene Chloride 1.86 0.0186 1.2E+03 5.3E+02 1.5E-11 7.1E-06 91-20-3 ~Naphthalene 1.76 0.0176 3.6E-01 2.6E+00 4.9E-08 1.3E-03 103-65-1 Propyl benzene 1.11 0.0111 -8.8E+02 2.5E-06 115-07-1 Propylene 21.6 0.216 -2.6E+03 1.6E-05 100-42-5 Styrene 0.503 0.00503 -8.8E+02 1.1E-06 127-18-4 Tetrachloroethylene 871 8.71 4.7E+01 3.5E+01 1.8E-07 5.0E-02 108-88-3 Toluene 4.13 0.0413 -4.4E+03 1.9E-06 79-01-6 Trichloroethylene 5.14 0.0514 3.0E+00 1.8E+00 1.7E-08 5.9E-03 75-69-4 Trichlorofluoromethane 1.24 0.0124 -- 95-63-6 Trimethylbenzene, 1,2,4-15.4 0.154 -5.3E+01 5.9E-04 108-67-8 Trimethylbenzene, 1,3,5-3.49 0.0349 -5.3E+01 1.3E-04 25167-70-8 Trimethylpentene, 2,4,4-0.56 0.0056 -- 1330-20-7 Xylenes 31.63 0.3163 -8.8E+01 7.2E-04 Cumulative: 3.4E-07 1.1E-01 DSCA Soil Gas Risk Calculator - Cumulative Risk for Non-Residential Worker Version 11, July 2023 DC410064 Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals. DSCA ID No: Name/Address of DSCA Site:Frye & Webster Cleaners/608 Elwell Avenue, Greensboro, NC Name/Address of Sampling Location:Frye & Webster Cleaners/608 Elwell Avenue, Greensboro, NC Sampling Date:1/31/2024 Sample ID:SG-3 All concentrations are in ug/m3 CAS # Chemical Name: Soil Gas Concentration (ug/m3) Calculated Indoor Air Concentration (ug/m3) Indoor Air Screening Level for Carcinogens @ TCR = 1E-06 Indoor Air Screening Level for Non- Carcinogens @ THQ = 0.2 Calculated Carcinogenic Risk Calculated Non- Carcinogenic Hazard Quotient 67-64-1 Acetone 23.8 0.714 -- 75-05-8 Acetonitrile 0.178 0.00534 -1.3E+01 8.5E-05 71-43-2 Benzene 0.751 0.02253 3.6E-01 6.3E+00 6.3E-08 7.2E-04 75-15-0 Carbon Disulfide 3 0.09 -1.5E+02 1.2E-04 67-66-3 Chloroform 0.999 0.02997 1.2E-01 2.0E+01 2.5E-07 2.9E-04 98-82-8 Cumene 0.434 0.01302 -8.3E+01 3.1E-05 110-82-7 Cyclohexane 1.71 0.0513 -1.3E+03 8.2E-06 75-35-4 Dichloroethylene, 1,1-0.769 0.02307 -4.2E+01 1.1E-04 156-59-2 Dichloroethylene, cis-1,2-16 0.48 -8.3E+00 1.2E-02 156-60-5 Dichloroethylene, trans-1,2-1.25 0.0375 -8.3E+00 9.0E-04 111-77-3 Ethanol, 2-(2-methoxyethoxy)-1.5 0.045 -- 100-41-4 Ethylbenzene 1.16 0.0348 1.1E+00 2.1E+02 3.1E-08 3.3E-05 142-82-5 Heptane, N-1.43 0.0429 -8.3E+01 1.0E-04 E5241997 Hexane, Commercial 1.65 0.0495 1.4E+01 1.3E+02 3.5E-09 7.9E-05 591-78-6 Hexanone, 2-16 0.48 -6.3E+00 1.5E-02 67-63-0 Isopropanol 0.558 0.01674 -4.2E+01 8.0E-05 78-93-3 Methyl Ethyl Ketone (2-Butanone)6.03 0.1809 -1.0E+03 3.5E-05 108-10-1 Methyl Isobutyl Ketone (4-methyl-2-pentanone)5.67 0.1701 - 6.3E+02 5.4E-05 75-09-2 Methylene Chloride 0.838 0.02514 1.0E+02 1.3E+02 2.5E-10 4.0E-05 103-65-1 Propyl benzene 0.912 0.02736 -2.1E+02 2.6E-05 115-07-1 Propylene 5.02 0.1506 -6.3E+02 4.8E-05 127-18-4 Tetrachloroethylene 12277 368.31 1.1E+01 8.3E+00 3.4E-05 8.8E+00 108-88-3 Toluene 7.29 0.2187 -1.0E+03 4.2E-05 71-55-6 Trichloroethane, 1,1,1-15.6 0.468 -1.0E+03 9.0E-05 79-01-6 Trichloroethylene 109 3.27 4.8E-01 4.2E-01 6.8E-06 1.6E+00 75-69-4 Trichlorofluoromethane 1.1 0.033 -- 95-63-6 Trimethylbenzene, 1,2,4-4.12 0.1236 -1.3E+01 2.0E-03 108-67-8 Trimethylbenzene, 1,3,5-1.06 0.0318 -1.3E+01 5.1E-04 1330-20-7 Xylenes 6.08 0.1824 -2.1E+01 1.7E-03 Cumulative: 4.1E-05 1.0E+01 DSCA Soil Gas Risk Calculator - Cumulative Risk for Resident Version 11, July 2023 DC410064 Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals. DSCA ID No: Name/Address of DSCA Site:Frye & Webster Cleaners/608 Elwell Avenue, Greensboro, NC Name/Address of Sampling Location:Frye & Webster Cleaners/608 Elwell Avenue, Greensboro, NC Sampling Date:1/31/2024 Sample ID:SG-3 All concentrations are in ug/m3 CAS # Chemical Name: Soil Gas Concentration (ug/m3) Calculated Indoor Air Concentration (ug/m3) Indoor Air Screening Level for Carcinogens @ TCR = 1E-06 Indoor Air Screening Level for Non- Carcinogens @ THQ = 0.2 Calculated Carcinogenic Risk Calculated Non- Carcinogenic Hazard Quotient 67-64-1 Acetone 23.8 0.238 -- 75-05-8 Acetonitrile 0.178 0.00178 -5.3E+01 6.8E-06 71-43-2 Benzene 0.751 0.00751 1.6E+00 2.6E+01 4.8E-09 5.7E-05 75-15-0 Carbon Disulfide 3 0.03 -6.1E+02 9.8E-06 67-66-3 Chloroform 0.999 0.00999 5.3E-01 8.6E+01 1.9E-08 2.3E-05 98-82-8 Cumene 0.434 0.00434 -3.5E+02 2.5E-06 110-82-7 Cyclohexane 1.71 0.0171 -5.3E+03 6.5E-07 75-35-4 Dichloroethylene, 1,1-0.769 0.00769 -1.8E+02 8.8E-06 156-59-2 Dichloroethylene, cis-1,2-16 0.16 -3.5E+01 9.1E-04 156-60-5 Dichloroethylene, trans-1,2-1.25 0.0125 -3.5E+01 7.1E-05 111-77-3 Ethanol, 2-(2-methoxyethoxy)-1.5 0.015 -- 100-41-4 Ethylbenzene 1.16 0.0116 4.9E+00 8.8E+02 2.4E-09 2.6E-06 142-82-5 Heptane, N-1.43 0.0143 -3.5E+02 8.2E-06 E5241997 Hexane, Commercial 1.65 0.0165 6.1E+01 5.3E+02 2.7E-10 6.3E-06 591-78-6 Hexanone, 2-16 0.16 -2.6E+01 1.2E-03 67-63-0 Isopropanol 0.558 0.00558 -1.8E+02 6.4E-06 78-93-3 Methyl Ethyl Ketone (2-Butanone)6.03 0.0603 -4.4E+03 2.8E-06 108-10-1 Methyl Isobutyl Ketone (4-methyl-2-pentanone)5.67 0.0567 - 2.6E+03 4.3E-06 75-09-2 Methylene Chloride 0.838 0.00838 1.2E+03 5.3E+02 6.8E-12 3.2E-06 103-65-1 Propyl benzene 0.912 0.00912 -8.8E+02 2.1E-06 115-07-1 Propylene 5.02 0.0502 -2.6E+03 3.8E-06 127-18-4 Tetrachloroethylene 12277 122.77 4.7E+01 3.5E+01 2.6E-06 7.0E-01 108-88-3 Toluene 1.94 0.0194 -4.4E+03 8.9E-07 71-55-6 Trichloroethane, 1,1,1-15.6 0.156 -4.4E+03 7.1E-06 79-01-6 Trichloroethylene 109 1.09 3.0E+00 1.8E+00 3.6E-07 1.2E-01 75-69-4 Trichlorofluoromethane 1.1 0.011 -- 95-63-6 Trimethylbenzene, 1,2,4-4.12 0.0412 -5.3E+01 1.6E-04 108-67-8 Trimethylbenzene, 1,3,5-1.06 0.0106 -5.3E+01 4.0E-05 1330-20-7 Xylenes 6.08 0.0608 -8.8E+01 1.4E-04 Cumulative: 3.0E-06 8.3E-01 DSCA Soil Gas Risk Calculator - Cumulative Risk for Non-Residential Worker Version 11, July 2023 DC410064 Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals. DSCA ID No: Name/Address of DSCA Site:Frye & Webster Cleaners/608 Elwell Avenue, Greensboro, NC Name/Address of Sampling Location:Frye & Webster Cleaners/608 Elwell Avenue, Greensboro, NC Sampling Date:2/1/2024 Sample ID:SG-4 All concentrations are in ug/m3 CAS # Chemical Name: Soil Gas Concentration (ug/m3) Calculated Indoor Air Concentration (ug/m3) Indoor Air Screening Level for Carcinogens @ TCR = 1E-06 Indoor Air Screening Level for Non- Carcinogens @ THQ = 0.2 Calculated Carcinogenic Risk Calculated Non- Carcinogenic Hazard Quotient 67-64-1 Acetone 8.88 0.2664 -- 107-02-8 Acrolein 4.5 0.135 -4.2E-03 6.5E+00 71-43-2 Benzene 0.389 0.01167 3.6E-01 6.3E+00 3.2E-08 3.7E-04 106-99-0 Butadiene, 1,3-0.61 0.0183 9.4E-02 4.2E-01 2.0E-07 8.8E-03 75-15-0 Carbon Disulfide 9.66 0.2898 -1.5E+02 4.0E-04 67-66-3 Chloroform 0.57 0.0171 1.2E-01 2.0E+01 1.4E-07 1.7E-04 74-87-3 Chloromethane 0.201 0.00603 -1.9E+01 6.4E-05 98-82-8 Cumene 0.904 0.02712 -8.3E+01 6.5E-05 110-82-7 Cyclohexane 5.67 0.1701 -1.3E+03 2.7E-05 75-71-8 Dichlorodifluoromethane 2.25 0.0675 -2.1E+01 6.5E-04 107-06-2 Dichloroethane, 1,2-0.445 0.01335 1.1E-01 1.5E+00 1.2E-07 1.8E-03 156-59-2 Dichloroethylene, cis-1,2-6.04 0.1812 -8.3E+00 4.3E-03 111-77-3 Ethanol, 2-(2-methoxyethoxy)-1.33 0.0399 -- 75-00-3 Ethyl Chloride (Chloroethane)0.248 0.00744 -8.3E+02 1.8E-06 100-41-4 Ethylbenzene 0.726 0.02178 1.1E+00 2.1E+02 1.9E-08 2.1E-05 142-82-5 Heptane, N-1.39 0.0417 -8.3E+01 1.0E-04 E5241997 Hexane, Commercial 3.23 0.0969 1.4E+01 1.3E+02 6.9E-09 1.5E-04 591-78-6 Hexanone, 2-14.5 0.435 -6.3E+00 1.4E-02 67-63-0 Isopropanol 0.51 0.0153 -4.2E+01 7.3E-05 78-93-3 Methyl Ethyl Ketone (2-Butanone)1.12 0.0336 -1.0E+03 6.4E-06 108-10-1 Methyl Isobutyl Ketone (4-methyl-2-pentanone)35.7 1.071 - 6.3E+02 3.4E-04 80-62-6 Methyl Methacrylate 4.15 0.1245 -1.5E+02 1.7E-04 75-09-2 Methylene Chloride 0.49 0.0147 1.0E+02 1.3E+02 1.4E-10 2.3E-05 115-07-1 Propylene 31.3 0.939 -6.3E+02 3.0E-04 79-34-5 Tetrachloroethane, 1,1,2,2-1.72 0.0516 4.8E-02 -1.1E-06 127-18-4 Tetrachloroethylene 1236 37.08 1.1E+01 8.3E+00 3.4E-06 8.9E-01 108-88-3 Toluene 3.4 0.102 -1.0E+03 2.0E-05 79-00-5 Trichloroethane, 1,1,2-4.99 0.1497 1.8E-01 4.2E-02 8.5E-07 7.2E-01 79-01-6 Trichloroethylene 9.03 0.2709 4.8E-01 4.2E-01 5.7E-07 1.3E-01 75-69-4 Trichlorofluoromethane 1.11 0.0333 -- 95-63-6 Trimethylbenzene, 1,2,4-2.71 0.0813 -1.3E+01 1.3E-03 108-67-8 Trimethylbenzene, 1,3,5-0.966 0.02898 -1.3E+01 4.6E-04 25167-70-8 Trimethylpentene, 2,4,4-1.45 0.0435 -- 1330-20-7 Xylenes 4.94 0.1482 -2.1E+01 1.4E-03 Cumulative: 6.4E-06 8.2E+00 DSCA Soil Gas Risk Calculator - Cumulative Risk for Resident Version 11, July 2023 DC410064 Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals. DSCA ID No: Name/Address of DSCA Site:Frye & Webster Cleaners/608 Elwell Avenue, Greensboro, NC Name/Address of Sampling Location:Frye & Webster Cleaners/608 Elwell Avenue, Greensboro, NC Sampling Date:2/1/2024 Sample ID:SG-4 All concentrations are in ug/m3 CAS # Chemical Name: Soil Gas Concentration (ug/m3) Calculated Indoor Air Concentration (ug/m3) Indoor Air Screening Level for Carcinogens @ TCR = 1E-06 Indoor Air Screening Level for Non- Carcinogens @ THQ = 0.2 Calculated Carcinogenic Risk Calculated Non- Carcinogenic Hazard Quotient 67-64-1 Acetone 8.88 0.0888 -- 107-02-8 Acrolein 4.5 0.045 -1.8E-02 5.1E-01 71-43-2 Benzene 0.389 0.00389 1.6E+00 2.6E+01 2.5E-09 3.0E-05 106-99-0 Butadiene, 1,3-0.61 0.0061 4.1E-01 1.8E+00 1.5E-08 7.0E-04 75-15-0 Carbon Disulfide 9.66 0.0966 -6.1E+02 3.2E-05 67-66-3 Chloroform 0.57 0.0057 5.3E-01 8.6E+01 1.1E-08 1.3E-05 74-87-3 Chloromethane 0.201 0.00201 -7.9E+01 5.1E-06 98-82-8 Cumene 0.904 0.00904 -3.5E+02 5.2E-06 110-82-7 Cyclohexane 5.67 0.0567 -5.3E+03 2.2E-06 75-71-8 Dichlorodifluoromethane 2.25 0.0225 -8.8E+01 5.1E-05 107-06-2 Dichloroethane, 1,2-0.445 0.00445 4.7E-01 6.1E+00 9.4E-09 1.5E-04 156-59-2 Dichloroethylene, cis-1,2-6.04 0.0604 -3.5E+01 3.4E-04 111-77-3 Ethanol, 2-(2-methoxyethoxy)-1.33 0.0133 -- 75-00-3 Ethyl Chloride (Chloroethane)0.248 0.00248 -3.5E+03 1.4E-07 100-41-4 Ethylbenzene 0.726 0.00726 4.9E+00 8.8E+02 1.5E-09 1.7E-06 142-82-5 Heptane, N-1.39 0.0139 -3.5E+02 7.9E-06 E5241997 Hexane, Commercial 3.23 0.0323 6.1E+01 5.3E+02 5.3E-10 1.2E-05 591-78-6 Hexanone, 2-14.5 0.145 -2.6E+01 1.1E-03 67-63-0 Isopropanol 0.51 0.0051 -1.8E+02 5.8E-06 78-93-3 Methyl Ethyl Ketone (2-Butanone)1.12 0.0112 -4.4E+03 5.1E-07 108-10-1 Methyl Isobutyl Ketone (4-methyl-2-pentanone)35.7 0.357 - 2.6E+03 2.7E-05 80-62-6 Methyl Methacrylate 4.15 0.0415 -6.1E+02 1.4E-05 75-09-2 Methylene Chloride 0.49 0.0049 1.2E+03 5.3E+02 4.0E-12 1.9E-06 115-07-1 Propylene 31.3 0.313 -2.6E+03 2.4E-05 79-34-5 Tetrachloroethane, 1,1,2,2-1.72 0.0172 2.1E-01 -8.1E-08 127-18-4 Tetrachloroethylene 1236 12.36 4.7E+01 3.5E+01 2.6E-07 7.1E-02 108-88-3 Toluene 3.4 0.034 -4.4E+03 1.6E-06 79-00-5 Trichloroethane, 1,1,2-4.99 0.0499 7.7E-01 1.8E-01 6.5E-08 5.7E-02 79-01-6 Trichloroethylene 9.03 0.0903 3.0E+00 1.8E+00 3.0E-08 1.0E-02 75-69-4 Trichlorofluoromethane 1.11 0.0111 -- 95-63-6 Trimethylbenzene, 1,2,4-2.71 0.0271 -5.3E+01 1.0E-04 108-67-8 Trimethylbenzene, 1,3,5-0.966 0.00966 -5.3E+01 3.7E-05 25167-70-8 Trimethylpentene, 2,4,4-1.4 0.014 -- 1330-20-7 Xylenes 4.94 0.0494 -8.8E+01 1.1E-04 Cumulative: 4.8E-07 6.5E-01 DSCA Soil Gas Risk Calculator - Cumulative Risk for Non-Residential Worker Version 11, July 2023 DC410064 Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals. DSCA ID No: Name/Address of DSCA Site:Frye & Webster Cleaners/608 Elwell Avenue, Greensboro, NC Name/Address of Sampling Location:Frye & Webster Cleaners/608 Elwell Avenue, Greensboro, NC Sampling Date:1/29/2024 Sample ID:SG-5 All concentrations are in ug/m3 CAS # Chemical Name: Soil Gas Concentration (ug/m3) Calculated Indoor Air Concentration (ug/m3) Indoor Air Screening Level for Carcinogens @ TCR = 1E-06 Indoor Air Screening Level for Non- Carcinogens @ THQ = 0.2 Calculated Carcinogenic Risk Calculated Non- Carcinogenic Hazard Quotient 67-64-1 Acetone 84.9 2.547 -- 107-02-8 Acrolein 0.803 0.02409 -4.2E-03 1.2E+00 71-43-2 Benzene 1.21 0.0363 3.6E-01 6.3E+00 1.0E-07 1.2E-03 106-99-0 Butadiene, 1,3-0.718 0.02154 9.4E-02 4.2E-01 2.3E-07 1.0E-02 75-15-0 Carbon Disulfide 1.55 0.0465 -1.5E+02 6.4E-05 56-23-5 Carbon Tetrachloride 0.51 0.0153 4.7E-01 2.1E+01 3.3E-08 1.5E-04 67-66-3 Chloroform 5.25 0.1575 1.2E-01 2.0E+01 1.3E-06 1.5E-03 74-87-3 Chloromethane 0.77 0.0231 -1.9E+01 2.5E-04 95-49-8 Chlorotoluene, o-0.56 0.0168 -- 98-82-8 Cumene 1.23 0.0369 -8.3E+01 8.8E-05 110-82-7 Cyclohexane 1.46 0.0438 -1.3E+03 7.0E-06 75-71-8 Dichlorodifluoromethane 2.44 0.0732 -2.1E+01 7.0E-04 156-59-2 Dichloroethylene, cis-1,2-14.4 0.432 -8.3E+00 1.0E-02 156-60-5 Dichloroethylene, trans-1,2-2.01 0.0603 -8.3E+00 1.4E-03 123-91-1 Dioxane, 1,4-1.33 0.0399 5.6E-01 6.3E+00 7.1E-08 1.3E-03 111-77-3 Ethanol, 2-(2-methoxyethoxy)-6.59 0.1977 -- 141-78-6 Ethyl Acetate 4.13 0.1239 -1.5E+01 1.7E-03 100-41-4 Ethylbenzene 4.5 0.135 1.1E+00 2.1E+02 1.2E-07 1.3E-04 142-82-5 Heptane, N-1.78 0.0534 -8.3E+01 1.3E-04 E5241997 Hexane, Commercial 2.5 0.075 1.4E+01 1.3E+02 5.3E-09 1.2E-04 591-78-6 Hexanone, 2-98.7 2.961 -6.3E+00 9.5E-02 67-63-0 Isopropanol 4.77 0.1431 -4.2E+01 6.9E-04 78-93-3 Methyl Ethyl Ketone (2-Butanone)18.7 0.561 -1.0E+03 1.1E-04 108-10-1 Methyl Isobutyl Ketone (4-methyl-2-pentanone)30.7 0.921 - 6.3E+02 2.9E-04 80-62-6 Methyl Methacrylate 0.387 0.01161 -1.5E+02 1.6E-05 75-09-2 Methylene Chloride 0.665 0.01995 1.0E+02 1.3E+02 2.0E-10 3.2E-05 91-20-3 ~Naphthalene 0.85 0.0255 8.3E-02 6.3E-01 3.1E-07 8.2E-03 103-65-1 Propyl benzene 2.59 0.0777 -2.1E+02 7.5E-05 115-07-1 Propylene 7.22 0.2166 -6.3E+02 6.9E-05 100-42-5 Styrene 0.444 0.01332 -2.1E+02 1.3E-05 79-34-5 Tetrachloroethane, 1,1,2,2-0.775 0.02325 4.8E-02 -4.8E-07 127-18-4 Tetrachloroethylene 3117 93.51 1.1E+01 8.3E+00 8.7E-06 2.2E+00 108-88-3 Toluene 15.7 0.471 -1.0E+03 9.0E-05 79-00-5 Trichloroethane, 1,1,2-0.553 0.01659 1.8E-01 4.2E-02 9.5E-08 8.0E-02 79-01-6 Trichloroethylene 131 3.93 4.8E-01 4.2E-01 8.2E-06 1.9E+00 75-69-4 Trichlorofluoromethane 1.32 0.0396 -- 95-63-6 Trimethylbenzene, 1,2,4-15.1 0.453 -1.3E+01 7.2E-03 108-67-8 Trimethylbenzene, 1,3,5-3.91 0.1173 -1.3E+01 1.9E-03 25167-70-8 Trimethylpentene, 2,4,4-3.28 0.0984 -- 1330-20-7 Xylenes 24.83 0.7449 -2.1E+01 7.1E-03 Cumulative: 2.0E-05 5.5E+00 DSCA Soil Gas Risk Calculator - Cumulative Risk for Resident Version 11, July 2023 DC410064 Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals. DSCA ID No: Name/Address of DSCA Site:Frye & Webster Cleaners/608 Elwell Avenue, Greensboro, NC Name/Address of Sampling Location:Frye & Webster Cleaners/608 Elwell Avenue, Greensboro, NC Sampling Date:1/29/2024 Sample ID:SG-5 All concentrations are in ug/m3 CAS # Chemical Name: Soil Gas Concentration (ug/m3) Calculated Indoor Air Concentration (ug/m3) Indoor Air Screening Level for Carcinogens @ TCR = 1E-06 Indoor Air Screening Level for Non- Carcinogens @ THQ = 0.2 Calculated Carcinogenic Risk Calculated Non- Carcinogenic Hazard Quotient 67-64-1 Acetone 84.9 0.849 -- 107-02-8 Acrolein 0.803 0.00803 -1.8E-02 9.2E-02 71-43-2 Benzene 1.21 0.0121 1.6E+00 2.6E+01 7.7E-09 9.2E-05 106-99-0 Butadiene, 1,3-0.718 0.00718 4.1E-01 1.8E+00 1.8E-08 8.2E-04 75-15-0 Carbon Disulfide 1.55 0.0155 -6.1E+02 5.1E-06 56-23-5 Carbon Tetrachloride 0.51 0.0051 2.0E+00 8.8E+01 2.5E-09 1.2E-05 67-66-3 Chloroform 5.25 0.0525 5.3E-01 8.6E+01 9.8E-08 1.2E-04 74-87-3 Chloromethane 0.77 0.0077 -7.9E+01 2.0E-05 95-49-8 Chlorotoluene, o-0.56 0.0056 -- 98-82-8 Cumene 1.23 0.0123 -3.5E+02 7.0E-06 110-82-7 Cyclohexane 1.46 0.0146 -5.3E+03 5.6E-07 75-71-8 Dichlorodifluoromethane 2.44 0.0244 -8.8E+01 5.6E-05 156-59-2 Dichloroethylene, cis-1,2-14.4 0.144 -3.5E+01 8.2E-04 156-60-5 Dichloroethylene, trans-1,2-2.01 0.0201 -3.5E+01 1.1E-04 123-91-1 Dioxane, 1,4-1.33 0.0133 2.5E+00 2.6E+01 5.4E-09 1.0E-04 111-77-3 Ethanol, 2-(2-methoxyethoxy)-6.59 0.0659 -- 141-78-6 Ethyl Acetate 4.13 0.0413 -6.1E+01 1.3E-04 100-41-4 Ethylbenzene 4.5 0.045 4.9E+00 8.8E+02 9.2E-09 1.0E-05 142-82-5 Heptane, N-1.78 0.0178 -3.5E+02 1.0E-05 E5241997 Hexane, Commercial 2.5 0.025 6.1E+01 5.3E+02 4.1E-10 9.5E-06 591-78-6 Hexanone, 2-98.7 0.987 -2.6E+01 7.5E-03 67-63-0 Isopropanol 4.77 0.0477 -1.8E+02 5.4E-05 78-93-3 Methyl Ethyl Ketone (2-Butanone)18.7 0.187 -4.4E+03 8.5E-06 108-10-1 Methyl Isobutyl Ketone (4-methyl-2-pentanone)30.7 0.307 - 2.6E+03 2.3E-05 80-62-6 Methyl Methacrylate 0.387 0.00387 -6.1E+02 1.3E-06 75-09-2 Methylene Chloride 0.665 0.00665 1.2E+03 5.3E+02 5.4E-12 2.5E-06 91-20-3 ~Naphthalene 0.85 0.0085 3.6E-01 2.6E+00 2.4E-08 6.5E-04 103-65-1 Propyl benzene 2.59 0.0259 -8.8E+02 5.9E-06 115-07-1 Propylene 7.22 0.0722 -2.6E+03 5.5E-06 100-42-5 Styrene 0.444 0.00444 -8.8E+02 1.0E-06 79-34-5 Tetrachloroethane, 1,1,2,2-0.775 0.00775 2.1E-01 -3.7E-08 127-18-4 Tetrachloroethylene 3117 31.17 4.7E+01 3.5E+01 6.6E-07 1.8E-01 108-88-3 Toluene 15.7 0.157 -4.4E+03 7.2E-06 79-00-5 Trichloroethane, 1,1,2-0.553 0.00553 7.7E-01 1.8E-01 7.2E-09 6.3E-03 79-01-6 Trichloroethylene 131 1.31 3.0E+00 1.8E+00 4.4E-07 1.5E-01 75-69-4 Trichlorofluoromethane 1.32 0.0132 -- 95-63-6 Trimethylbenzene, 1,2,4-15.1 0.151 -5.3E+01 5.7E-04 108-67-8 Trimethylbenzene, 1,3,5-3.91 0.0391 -5.3E+01 1.5E-04 25167-70-8 Trimethylpentene, 2,4,4-3.28 0.0328 -- 1330-20-7 Xylenes 24.83 0.2483 -8.8E+01 5.7E-04 Cumulative: 1.3E-06 4.4E-01 DSCA Soil Gas Risk Calculator - Cumulative Risk for Non-Residential Worker Version 11, July 2023 DC410064 Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals. DSCA ID No: Name/Address of DSCA Site:Frye & Webster Cleaners/608 Elwell Avenue, Greensboro, NC Name/Address of Sampling Location:Frye & Webster Cleaners/608 Elwell Avenue, Greensboro, NC Sampling Date:2/1/2024 Sample ID:SG-6 All concentrations are in ug/m3 CAS # Chemical Name: Soil Gas Concentration (ug/m3) Calculated Indoor Air Concentration (ug/m3) Indoor Air Screening Level for Carcinogens @ TCR = 1E-06 Indoor Air Screening Level for Non- Carcinogens @ THQ = 0.2 Calculated Carcinogenic Risk Calculated Non- Carcinogenic Hazard Quotient 67-64-1 Acetone 17.5 0.525 -- 75-15-0 Carbon Disulfide 1.18 0.0354 -1.5E+02 4.8E-05 67-66-3 Chloroform 0.822 0.02466 1.2E-01 2.0E+01 2.0E-07 2.4E-04 74-87-3 Chloromethane 0.405 0.01215 -1.9E+01 1.3E-04 110-82-7 Cyclohexane 0.326 0.00978 -1.3E+03 1.6E-06 75-71-8 Dichlorodifluoromethane 2.32 0.0696 -2.1E+01 6.7E-04 111-77-3 Ethanol, 2-(2-methoxyethoxy)-1.63 0.0489 -- E5241997 Hexane, Commercial 0.833 0.02499 1.4E+01 1.3E+02 1.8E-09 4.0E-05 591-78-6 Hexanone, 2-0.396 0.01188 -6.3E+00 3.8E-04 67-63-0 Isopropanol 1.04 0.0312 -4.2E+01 1.5E-04 78-93-3 Methyl Ethyl Ketone (2-Butanone)0.687 0.02061 -1.0E+03 4.0E-06 108-10-1 Methyl Isobutyl Ketone (4-methyl-2-pentanone)0.398 0.01194 - 6.3E+02 3.8E-06 75-09-2 Methylene Chloride 0.363 0.01089 1.0E+02 1.3E+02 1.1E-10 1.7E-05 115-07-1 Propylene 1.57 0.0471 -6.3E+02 1.5E-05 127-18-4 Tetrachloroethylene 133 3.99 1.1E+01 8.3E+00 3.7E-07 9.6E-02 108-88-3 Toluene 1.96 0.0588 -1.0E+03 1.1E-05 75-69-4 Trichlorofluoromethane 1.38 0.0414 -- Cumulative: 5.7E-07 9.7E-02 DSCA Soil Gas Risk Calculator - Cumulative Risk for Resident Version 11, July 2023 DC410064 Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals. DSCA ID No: Name/Address of DSCA Site:Frye & Webster Cleaners/608 Elwell Avenue, Greensboro, NC Name/Address of Sampling Location:Frye & Webster Cleaners/608 Elwell Avenue, Greensboro, NC Sampling Date:2/1/2024 Sample ID:SG-6 All concentrations are in ug/m3 CAS # Chemical Name: Soil Gas Concentration (ug/m3) Calculated Indoor Air Concentration (ug/m3) Indoor Air Screening Level for Carcinogens @ TCR = 1E-06 Indoor Air Screening Level for Non- Carcinogens @ THQ = 0.2 Calculated Carcinogenic Risk Calculated Non- Carcinogenic Hazard Quotient 67-64-1 Acetone 17.5 0.175 -- 75-15-0 Carbon Disulfide 1.18 0.0118 -6.1E+02 3.8E-06 67-66-3 Chloroform 0.822 0.00822 5.3E-01 8.6E+01 1.5E-08 1.9E-05 74-87-3 Chloromethane 0.405 0.00405 -7.9E+01 1.0E-05 110-82-7 Cyclohexane 0.326 0.00326 -5.3E+03 1.2E-07 75-71-8 Dichlorodifluoromethane 2.32 0.0232 -8.8E+01 5.3E-05 111-77-3 Ethanol, 2-(2-methoxyethoxy)-1.63 0.0163 -- E5241997 Hexane, Commercial 0.833 0.00833 6.1E+01 5.3E+02 1.4E-10 3.2E-06 591-78-6 Hexanone, 2-0.396 0.00396 -2.6E+01 3.0E-05 67-63-0 Isopropanol 1.04 0.0104 -1.8E+02 1.2E-05 78-93-3 Methyl Ethyl Ketone (2-Butanone)0.687 0.00687 -4.4E+03 3.1E-07 108-10-1 Methyl Isobutyl Ketone (4-methyl-2-pentanone)0.398 0.00398 - 2.6E+03 3.0E-07 75-09-2 Methylene Chloride 0.363 0.00363 1.2E+03 5.3E+02 3.0E-12 1.4E-06 115-07-1 Propylene 1.57 0.0157 -2.6E+03 1.2E-06 127-18-4 Tetrachloroethylene 133 1.33 4.7E+01 3.5E+01 2.8E-08 7.6E-03 108-88-3 Toluene 1.96 0.0196 -4.4E+03 8.9E-07 75-69-4 Trichlorofluoromethane 1.38 0.0138 -- Cumulative: 4.4E-08 7.7E-03 DSCA Soil Gas Risk Calculator - Cumulative Risk for Non-Residential Worker Version 11, July 2023 DC410064 Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals. DSCA ID No: Name/Address of DSCA Site:Frye & Webster Cleaners/608 Elwell Avenue, Greensboro, NC Name/Address of Sampling Location:Frye & Webster Cleaners/608 Elwell Avenue, Greensboro, NC Sampling Date:1/31/2024 Sample ID:SG-9 All concentrations are in ug/m3 CAS # Chemical Name: Soil Gas Concentration (ug/m3) Calculated Indoor Air Concentration (ug/m3) Indoor Air Screening Level for Carcinogens @ TCR = 1E-06 Indoor Air Screening Level for Non- Carcinogens @ THQ = 0.2 Calculated Carcinogenic Risk Calculated Non- Carcinogenic Hazard Quotient 67-64-1 Acetone 20.5 0.615 -- 75-05-8 Acetonitrile 0.302 0.00906 -1.3E+01 1.4E-04 107-13-1 Acrylonitrile 0.751 0.02253 4.1E-02 4.2E-01 5.5E-07 1.1E-02 71-43-2 Benzene 7.02 0.2106 3.6E-01 6.3E+00 5.9E-07 6.7E-03 106-94-5 Bromopropane, 1-0.425 0.01275 -2.1E+01 1.2E-04 106-99-0 Butadiene, 1,3-11.7 0.351 9.4E-02 4.2E-01 3.8E-06 1.7E-01 75-15-0 Carbon Disulfide 55.6 1.668 -1.5E+02 2.3E-03 67-66-3 Chloroform 0.929 0.02787 1.2E-01 2.0E+01 2.3E-07 2.7E-04 74-87-3 Chloromethane 0.27 0.0081 -1.9E+01 8.6E-05 98-82-8 Cumene 0.587 0.01761 -8.3E+01 4.2E-05 110-82-7 Cyclohexane 6.32 0.1896 -1.3E+03 3.0E-05 75-71-8 Dichlorodifluoromethane 2.24 0.0672 -2.1E+01 6.4E-04 156-59-2 Dichloroethylene, cis-1,2-0.44 0.0132 -8.3E+00 3.2E-04 111-77-3 Ethanol, 2-(2-methoxyethoxy)-4.28 0.1284 -- 141-78-6 Ethyl Acetate 1.02 0.0306 -1.5E+01 4.2E-04 100-41-4 Ethylbenzene 1.89 0.0567 1.1E+00 2.1E+02 5.0E-08 5.4E-05 142-82-5 Heptane, N-8.31 0.2493 -8.3E+01 6.0E-04 E5241997 Hexane, Commercial 14.4 0.432 1.4E+01 1.3E+02 3.1E-08 6.9E-04 591-78-6 Hexanone, 2-0.577 0.01731 -6.3E+00 5.5E-04 67-63-0 Isopropanol 2.35 0.0705 -4.2E+01 3.4E-04 78-93-3 Methyl Ethyl Ketone (2-Butanone)3.79 0.1137 -1.0E+03 2.2E-05 108-10-1 Methyl Isobutyl Ketone (4-methyl-2-pentanone)0.917 0.02751 - 6.3E+02 8.8E-06 75-09-2 Methylene Chloride 2 0.06 1.0E+02 1.3E+02 5.9E-10 9.6E-05 103-65-1 Propyl benzene 0.483 0.01449 -2.1E+02 1.4E-05 115-07-1 Propylene 99.9 2.997 -6.3E+02 9.6E-04 100-42-5 Styrene 0.577 0.01731 -2.1E+02 1.7E-05 127-18-4 Tetrachloroethylene 47.6 1.428 1.1E+01 8.3E+00 1.3E-07 3.4E-02 108-88-3 Toluene 14.7 0.441 -1.0E+03 8.5E-05 79-01-6 Trichloroethylene 0.525 0.01575 4.8E-01 4.2E-01 3.3E-08 7.6E-03 75-69-4 Trichlorofluoromethane 1.17 0.0351 -- 95-63-6 Trimethylbenzene, 1,2,4-1.82 0.0546 -1.3E+01 8.7E-04 108-67-8 Trimethylbenzene, 1,3,5-0.657 0.01971 -1.3E+01 3.2E-04 25167-70-8 Trimethylpentene, 2,4,4-3.77 0.1131 -- 1330-20-7 Xylenes 7 0.21 -2.1E+01 2.0E-03 Cumulative: 5.4E-06 2.4E-01 DSCA Soil Gas Risk Calculator - Cumulative Risk for Resident Version 11, July 2023 DC410064 Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals. DSCA ID No: Name/Address of DSCA Site:Frye & Webster Cleaners/608 Elwell Avenue, Greensboro, NC Name/Address of Sampling Location:Frye & Webster Cleaners/608 Elwell Avenue, Greensboro, NC Sampling Date:2/1/2024 Sample ID:SG-9 All concentrations are in ug/m3 CAS # Chemical Name: Soil Gas Concentration (ug/m3) Calculated Indoor Air Concentration (ug/m3) Indoor Air Screening Level for Carcinogens @ TCR = 1E-06 Indoor Air Screening Level for Non- Carcinogens @ THQ = 0.2 Calculated Carcinogenic Risk Calculated Non- Carcinogenic Hazard Quotient 67-64-1 Acetone 20.5 0.205 -- 75-05-8 Acetonitrile 0.302 0.00302 -5.3E+01 1.1E-05 107-13-1 Acrylonitrile 0.751 0.00751 1.8E-01 1.8E+00 4.2E-08 8.6E-04 71-43-2 Benzene 7.02 0.0702 1.6E+00 2.6E+01 4.5E-08 5.3E-04 106-94-5 Bromopropane, 1-0.425 0.00425 -8.8E+01 9.7E-06 106-99-0 Butadiene, 1,3-11.7 0.117 4.1E-01 1.8E+00 2.9E-07 1.3E-02 75-15-0 Carbon Disulfide 55.6 0.556 -6.1E+02 1.8E-04 67-66-3 Chloroform 0.929 0.00929 5.3E-01 8.6E+01 1.7E-08 2.2E-05 74-87-3 Chloromethane 0.27 0.0027 -7.9E+01 6.8E-06 98-82-8 Cumene 0.587 0.00587 -3.5E+02 3.4E-06 110-82-7 Cyclohexane 6.32 0.0632 -5.3E+03 2.4E-06 75-71-8 Dichlorodifluoromethane 2.24 0.0224 -8.8E+01 5.1E-05 156-59-2 Dichloroethylene, cis-1,2-0.44 0.0044 -3.5E+01 2.5E-05 111-77-3 Ethanol, 2-(2-methoxyethoxy)-4.28 0.0428 -- 141-78-6 Ethyl Acetate 1.02 0.0102 -6.1E+01 3.3E-05 100-41-4 Ethylbenzene 1.89 0.0189 4.9E+00 8.8E+02 3.9E-09 4.3E-06 142-82-5 Heptane, N-8.31 0.0831 -3.5E+02 4.7E-05 E5241997 Hexane, Commercial 14.4 0.144 6.1E+01 5.3E+02 2.3E-09 5.5E-05 591-78-6 Hexanone, 2-0.577 0.00577 -2.6E+01 4.4E-05 67-63-0 Isopropanol 2.35 0.0235 -1.8E+02 2.7E-05 78-93-3 Methyl Ethyl Ketone (2-Butanone)3.79 0.0379 -4.4E+03 1.7E-06 108-10-1 Methyl Isobutyl Ketone (4-methyl-2-pentanone)0.917 0.00917 - 2.6E+03 7.0E-07 75-09-2 Methylene Chloride 2 0.02 1.2E+03 5.3E+02 1.6E-11 7.6E-06 103-65-1 Propyl benzene 0.483 0.00483 -8.8E+02 1.1E-06 115-07-1 Propylene 99.9 0.999 -2.6E+03 7.6E-05 100-42-5 Styrene 0.577 0.00577 -8.8E+02 1.3E-06 127-18-4 Tetrachloroethylene 47.6 0.476 4.7E+01 3.5E+01 1.0E-08 2.7E-03 108-88-3 Toluene 14.7 0.147 -4.4E+03 6.7E-06 79-01-6 Trichloroethylene 0.525 0.00525 3.0E+00 1.8E+00 1.8E-09 6.0E-04 75-69-4 Trichlorofluoromethane 1.17 0.0117 -- 95-63-6 Trimethylbenzene, 1,2,4-1.82 0.0182 -5.3E+01 6.9E-05 108-67-8 Trimethylbenzene, 1,3,5-0.657 0.00657 -5.3E+01 2.5E-05 25167-70-8 Trimethylpentene, 2,4,4-3.77 0.0377 -- 1330-20-7 Xylenes 7 0.07 -8.8E+01 1.6E-04 Cumulative: 4.1E-07 1.9E-02 DSCA Soil Gas Risk Calculator - Cumulative Risk for Non-Residential Worker Version 11, July 2023 DC410064 Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals. DSCA ID No: Name/Address of DSCA Site:Frye & Webster Cleaners/608 Elwell Avenue, Greensboro, NC Name/Address of Sampling Location:Frye & Webster Cleaners/608 Elwell Avenue, Greensboro, NC Sampling Date:1/31/2024 Sample ID:SG-10 All concentrations are in ug/m3 CAS # Chemical Name: Soil Gas Concentration (ug/m3) Calculated Indoor Air Concentration (ug/m3) Indoor Air Screening Level for Carcinogens @ TCR = 1E-06 Indoor Air Screening Level for Non- Carcinogens @ THQ = 0.2 Calculated Carcinogenic Risk Calculated Non- Carcinogenic Hazard Quotient 67-64-1 Acetone 31 0.93 -- 107-02-8 Acrolein 0.682 0.02046 -4.2E-03 9.8E-01 71-43-2 Benzene 4.08 0.1224 3.6E-01 6.3E+00 3.4E-07 3.9E-03 106-99-0 Butadiene, 1,3-5.28 0.1584 9.4E-02 4.2E-01 1.7E-06 7.6E-02 75-15-0 Carbon Disulfide 46.3 1.389 -1.5E+02 1.9E-03 67-66-3 Chloroform 1.99 0.0597 1.2E-01 2.0E+01 4.9E-07 5.8E-04 74-87-3 Chloromethane 0.727 0.02181 -1.9E+01 2.3E-04 98-82-8 Cumene 1.39 0.0417 -8.3E+01 1.0E-04 110-82-7 Cyclohexane 2.2 0.066 -1.3E+03 1.1E-05 75-71-8 Dichlorodifluoromethane 2.31 0.0693 -2.1E+01 6.6E-04 156-59-2 Dichloroethylene, cis-1,2-1.2 0.036 -8.3E+00 8.6E-04 111-77-3 Ethanol, 2-(2-methoxyethoxy)-4.54 0.1362 -- 141-78-6 Ethyl Acetate 1.28 0.0384 -1.5E+01 5.3E-04 100-41-4 Ethylbenzene 13.6 0.408 1.1E+00 2.1E+02 3.6E-07 3.9E-04 142-82-5 Heptane, N-2.36 0.0708 -8.3E+01 1.7E-04 E5241997 Hexane, Commercial 4.32 0.1296 1.4E+01 1.3E+02 9.2E-09 2.1E-04 591-78-6 Hexanone, 2-8.29 0.2487 -6.3E+00 7.9E-03 67-63-0 Isopropanol 2.14 0.0642 -4.2E+01 3.1E-04 78-93-3 Methyl Ethyl Ketone (2-Butanone)2.04 0.0612 -1.0E+03 1.2E-05 108-10-1 Methyl Isobutyl Ketone (4-methyl-2-pentanone)14.5 0.435 - 6.3E+02 1.4E-04 1634-04-4 Methyl tert-Butyl Ether (MTBE)0.806 0.02418 1.1E+01 6.3E+02 2.2E-09 7.7E-06 75-09-2 Methylene Chloride 0.849 0.02547 1.0E+02 1.3E+02 2.5E-10 4.1E-05 91-20-3 ~Naphthalene 1.13 0.0339 8.3E-02 6.3E-01 4.1E-07 1.1E-02 103-65-1 Propyl benzene 2.16 0.0648 -2.1E+02 6.2E-05 115-07-1 Propylene 64.5 1.935 -6.3E+02 6.2E-04 100-42-5 Styrene 1.56 0.0468 -2.1E+02 4.5E-05 79-34-5 Tetrachloroethane, 1,1,2,2-1.7 0.051 4.8E-02 -1.1E-06 127-18-4 Tetrachloroethylene 236 7.08 1.1E+01 8.3E+00 6.6E-07 1.7E-01 108-88-3 Toluene 14.6 0.438 -1.0E+03 8.4E-05 79-01-6 Trichloroethylene 2.63 0.0789 4.8E-01 4.2E-01 1.6E-07 3.8E-02 75-69-4 Trichlorofluoromethane 1.29 0.0387 -- 95-63-6 Trimethylbenzene, 1,2,4-21.7 0.651 -1.3E+01 1.0E-02 108-67-8 Trimethylbenzene, 1,3,5-5.39 0.1617 -1.3E+01 2.6E-03 25167-70-8 Trimethylpentene, 2,4,4-1.02 0.0306 -- 1330-20-7 Xylenes 90.5 2.715 -2.1E+01 2.6E-02 Cumulative: 5.2E-06 1.3E+00 DSCA Soil Gas Risk Calculator - Cumulative Risk for Resident Version 11, July 2023 DC410064 Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals. DSCA ID No: Name/Address of DSCA Site:Frye & Webster Cleaners/608 Elwell Avenue, Greensboro, NC Name/Address of Sampling Location:Frye & Webster Cleaners/608 Elwell Avenue, Greensboro, NC Sampling Date:1/31/2024 Sample ID:SG-10 All concentrations are in ug/m3 CAS # Chemical Name: Soil Gas Concentration (ug/m3) Calculated Indoor Air Concentration (ug/m3) Indoor Air Screening Level for Carcinogens @ TCR = 1E-06 Indoor Air Screening Level for Non- Carcinogens @ THQ = 0.2 Calculated Carcinogenic Risk Calculated Non- Carcinogenic Hazard Quotient 67-64-1 Acetone 31 0.31 -- 107-02-8 Acrolein 0.682 0.00682 -1.8E-02 7.8E-02 71-43-2 Benzene 4.08 0.0408 1.6E+00 2.6E+01 2.6E-08 3.1E-04 106-99-0 Butadiene, 1,3-5.28 0.0528 4.1E-01 1.8E+00 1.3E-07 6.0E-03 75-15-0 Carbon Disulfide 46.3 0.463 -6.1E+02 1.5E-04 67-66-3 Chloroform 1.99 0.0199 5.3E-01 8.6E+01 3.7E-08 4.6E-05 74-87-3 Chloromethane 0.727 0.00727 -7.9E+01 1.8E-05 98-82-8 Cumene 1.39 0.0139 -3.5E+02 7.9E-06 110-82-7 Cyclohexane 2.2 0.022 -5.3E+03 8.4E-07 75-71-8 Dichlorodifluoromethane 2.31 0.0231 -8.8E+01 5.3E-05 156-59-2 Dichloroethylene, cis-1,2-1.2 0.012 -3.5E+01 6.8E-05 111-77-3 Ethanol, 2-(2-methoxyethoxy)-4.54 0.0454 -- 141-78-6 Ethyl Acetate 1.28 0.0128 -6.1E+01 4.2E-05 100-41-4 Ethylbenzene 13.6 0.136 4.9E+00 8.8E+02 2.8E-08 3.1E-05 142-82-5 Heptane, N-2.36 0.0236 -3.5E+02 1.3E-05 E5241997 Hexane, Commercial 4.32 0.0432 6.1E+01 5.3E+02 7.0E-10 1.6E-05 591-78-6 Hexanone, 2-8.29 0.0829 -2.6E+01 6.3E-04 67-63-0 Isopropanol 2.14 0.0214 -1.8E+02 2.4E-05 78-93-3 Methyl Ethyl Ketone (2-Butanone)2.04 0.0204 -4.4E+03 9.3E-07 108-10-1 Methyl Isobutyl Ketone (4-methyl-2-pentanone)14.5 0.145 - 2.6E+03 1.1E-05 1634-04-4 Methyl tert-Butyl Ether (MTBE)0.806 0.00806 4.7E+01 2.6E+03 1.7E-10 6.1E-07 75-09-2 Methylene Chloride 0.849 0.00849 1.2E+03 5.3E+02 6.9E-12 3.2E-06 91-20-3 ~Naphthalene 1.13 0.0113 3.6E-01 2.6E+00 3.1E-08 8.6E-04 103-65-1 Propyl benzene 2.16 0.0216 -8.8E+02 4.9E-06 115-07-1 Propylene 64.5 0.645 -2.6E+03 4.9E-05 100-42-5 Styrene 1.56 0.0156 -8.8E+02 3.6E-06 79-34-5 Tetrachloroethane, 1,1,2,2-1.7 0.017 2.1E-01 -8.0E-08 127-18-4 Tetrachloroethylene 236 2.36 4.7E+01 3.5E+01 5.0E-08 1.3E-02 108-88-3 Toluene 14.6 0.146 -4.4E+03 6.7E-06 79-01-6 Trichloroethylene 2.63 0.0263 3.0E+00 1.8E+00 8.8E-09 3.0E-03 75-69-4 Trichlorofluoromethane 1.29 0.0129 -- 95-63-6 Trimethylbenzene, 1,2,4-21.7 0.217 -5.3E+01 8.3E-04 108-67-8 Trimethylbenzene, 1,3,5-5.39 0.0539 -5.3E+01 2.1E-04 25167-70-8 Trimethylpentene, 2,4,4-1.02 0.0102 -- 1330-20-7 Xylenes 90.5 0.905 -8.8E+01 2.1E-03 Cumulative: 3.9E-07 1.1E-01 DSCA Soil Gas Risk Calculator - Cumulative Risk for Non-Residential Worker Version 11, July 2023 DC410064 Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals. DSCA ID No: Name/Address of DSCA Site:Frye & Webster Cleaners/608 Elwell Avenue, Greensboro, NC Name/Address of Sampling Location:Frye & Webster Cleaners/608 Elwell Avenue, Greensboro, NC Sampling Date:1/31/2024 Sample ID:SG-11 All concentrations are in ug/m3 CAS # Chemical Name: Soil Gas Concentration (ug/m3) Calculated Indoor Air Concentration (ug/m3) Indoor Air Screening Level for Carcinogens @ TCR = 1E-06 Indoor Air Screening Level for Non- Carcinogens @ THQ = 0.2 Calculated Carcinogenic Risk Calculated Non- Carcinogenic Hazard Quotient 67-64-1 Acetone 4878 146.34 -- 107-13-1 Acrylonitrile 1023 30.69 4.1E-02 4.2E-01 7.4E-04 1.5E+01 71-43-2 Benzene 138 4.14 3.6E-01 6.3E+00 1.2E-05 1.3E-01 100-44-7 Benzyl Chloride 1467 44.01 5.7E-02 2.1E-01 7.7E-04 4.2E+01 75-15-0 Carbon Disulfide 70.1 2.103 -1.5E+02 2.9E-03 108-90-7 Chlorobenzene 99 2.97 -1.0E+01 5.7E-02 67-66-3 Chloroform 650 19.5 1.2E-01 2.0E+01 1.6E-04 1.9E-01 98-82-8 Cumene 2672 80.16 -8.3E+01 1.9E-01 110-82-7 Cyclohexane 18395 551.85 -1.3E+03 8.8E-02 75-35-4 Dichloroethylene, 1,1-1939 58.17 -4.2E+01 2.8E-01 156-59-2 Dichloroethylene, cis-1,2-157117 4713.51 -8.3E+00 1.1E+02 156-60-5 Dichloroethylene, trans-1,2-439 13.17 -8.3E+00 3.2E-01 78-87-5 Dichloropropane, 1,2-1476 44.28 7.6E-01 8.3E-01 5.8E-05 1.1E+01 111-77-3 Ethanol, 2-(2-methoxyethoxy)-37.5 1.125 -- 100-41-4 Ethylbenzene 2178 65.34 1.1E+00 2.1E+02 5.8E-05 6.3E-02 142-82-5 Heptane, N-8701 261.03 -8.3E+01 6.3E-01 E5241997 Hexane, Commercial 15840 475.2 1.4E+01 1.3E+02 3.4E-05 7.6E-01 591-78-6 Hexanone, 2-19398 581.94 -6.3E+00 1.9E+01 108-10-1 Methyl Isobutyl Ketone (4-methyl-2-pentanone)1231 36.93 - 6.3E+02 1.2E-02 80-62-6 Methyl Methacrylate 35691 1070.73 -1.5E+02 1.5E+00 75-09-2 Methylene Chloride 119 3.57 1.0E+02 1.3E+02 3.5E-08 5.7E-03 103-65-1 Propyl benzene 5719 171.57 -2.1E+02 1.6E-01 115-07-1 Propylene 223 6.69 -6.3E+02 2.1E-03 79-34-5 Tetrachloroethane, 1,1,2,2-6154 184.62 4.8E-02 -3.8E-03 127-18-4 Tetrachloroethylene 1729266 51877.98 1.1E+01 8.3E+00 4.8E-03 1.2E+03 79-01-6 Trichloroethylene 233007 6990.21 4.8E-01 4.2E-01 1.5E-02 3.4E+03 95-63-6 Trimethylbenzene, 1,2,4-9101 273.03 -1.3E+01 4.4E+00 108-67-8 Trimethylbenzene, 1,3,5-2001 60.03 -1.3E+01 9.6E-01 25167-70-8 Trimethylpentene, 2,4,4-994 29.82 -- 75-01-4 Vinyl Chloride 1072 32.16 1.7E-01 1.7E+01 1.9E-04 3.9E-01 1330-20-7 Xylenes 317 9.51 -2.1E+01 9.1E-02 Cumulative: 2.5E-02 4.8E+03 DSCA Soil Gas Risk Calculator - Cumulative Risk for Resident Version 11, July 2023 DC410064 Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals. DSCA ID No: Name/Address of DSCA Site:Frye & Webster Cleaners/608 Elwell Avenue, Greensboro, NC Name/Address of Sampling Location:Frye & Webster Cleaners/608 Elwell Avenue, Greensboro, NC Sampling Date:1/31/2024 Sample ID:SG-11 All concentrations are in ug/m3 CAS # Chemical Name: Soil Gas Concentration (ug/m3) Calculated Indoor Air Concentration (ug/m3) Indoor Air Screening Level for Carcinogens @ TCR = 1E-06 Indoor Air Screening Level for Non- Carcinogens @ THQ = 0.2 Calculated Carcinogenic Risk Calculated Non- Carcinogenic Hazard Quotient 67-64-1 Acetone 4878 48.78 -- 107-13-1 Acrylonitrile 1023 10.23 1.8E-01 1.8E+00 5.7E-05 1.2E+00 71-43-2 Benzene 138 1.38 1.6E+00 2.6E+01 8.8E-07 1.1E-02 100-44-7 Benzyl Chloride 1467 14.67 2.5E-01 8.8E-01 5.9E-05 3.3E+00 75-15-0 Carbon Disulfide 70.1 0.701 -6.1E+02 2.3E-04 108-90-7 Chlorobenzene 99 0.99 -4.4E+01 4.5E-03 67-66-3 Chloroform 650 6.5 5.3E-01 8.6E+01 1.2E-05 1.5E-02 98-82-8 Cumene 2672 26.72 -3.5E+02 1.5E-02 110-82-7 Cyclohexane 18395 183.95 -5.3E+03 7.0E-03 75-35-4 Dichloroethylene, 1,1-1939 19.39 -1.8E+02 2.2E-02 156-59-2 Dichloroethylene, cis-1,2-157117 1571.17 -3.5E+01 9.0E+00 156-60-5 Dichloroethylene, trans-1,2-439 4.39 -3.5E+01 2.5E-02 78-87-5 Dichloropropane, 1,2-1476 14.76 3.3E+00 3.5E+00 4.5E-06 8.4E-01 111-77-3 Ethanol, 2-(2-methoxyethoxy)-37.5 0.375 -- 100-41-4 Ethylbenzene 2178 21.78 4.9E+00 8.8E+02 4.4E-06 5.0E-03 142-82-5 Heptane, N-8701 87.01 -3.5E+02 5.0E-02 E5241997 Hexane, Commercial 15840 158.4 6.1E+01 5.3E+02 2.6E-06 6.0E-02 591-78-6 Hexanone, 2-19398 193.98 -2.6E+01 1.5E+00 108-10-1 Methyl Isobutyl Ketone (4-methyl-2-pentanone)1231 12.31 - 2.6E+03 9.4E-04 80-62-6 Methyl Methacrylate 35691 356.91 -6.1E+02 1.2E-01 75-09-2 Methylene Chloride 119 1.19 1.2E+03 5.3E+02 9.7E-10 4.5E-04 103-65-1 Propyl benzene 5719 57.19 -8.8E+02 1.3E-02 115-07-1 Propylene 223 2.23 -2.6E+03 1.7E-04 79-34-5 Tetrachloroethane, 1,1,2,2-6154 61.54 2.1E-01 -2.9E-04 127-18-4 Tetrachloroethylene 1729266 17292.66 4.7E+01 3.5E+01 3.7E-04 9.9E+01 79-01-6 Trichloroethylene 233007 2330.07 3.0E+00 1.8E+00 7.8E-04 2.7E+02 95-63-6 Trimethylbenzene, 1,2,4-9101 91.01 -5.3E+01 3.5E-01 108-67-8 Trimethylbenzene, 1,3,5-2001 20.01 -5.3E+01 7.6E-02 25167-70-8 Trimethylpentene, 2,4,4-994 9.94 -- 75-01-4 Vinyl Chloride 1072 10.72 2.8E+00 7.0E+01 3.8E-06 3.1E-02 1330-20-7 Xylenes 317 3.17 -8.8E+01 7.2E-03 Cumulative: 1.6E-03 3.8E+02 DSCA Soil Gas Risk Calculator - Cumulative Risk for Non-Residential Worker Version 11, July 2023 DC410064 Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals. DSCA ID No: Name/Address of DSCA Site: Name/Address of Sampling Location: Sampling Date:2/9/2024 Sample ID:MW-1 Average Groundwater Temperature (°C):25 (Use default of 25⁰C unless site-specific data is available confirming the groundwater temperature during worst-case summer conditions.) CAS # Chemical Name: Groundwater Concentration (ug/L) Henry's Constant at 25°C (dimensionless) Temperature Adjusted Henry's Constant (dimensionless) Henry's Constant used for calculations (dimensionless) Calculated Indoor Air Concentration (ug/m3) Indoor Air Screening Level for Carcinogens @ TCR = 1E-06 Indoor Air Screening Level for Non- Carcinogens @ THQ = 0.2 Calculated Carcinogenic Risk Calculated Non- Carcinogenic Hazard Quotient 71-43-2 Benzene 561 0.226901063 0.226901063 0.226901063 1.3E+02 3.6E-01 6.3E+00 3.5E-04 4.1E+00 92-87-5 Benzidine 3.96 2.11365E-09 2.11365E-09 2.11365E-09 8.4E-09 1.5E-05 - 135-98-8 Butylbenzene, sec-0.867 0.71954211 0.71954211 0.71954211 6.2E-01 -- 98-06-6 Butylbenzene, tert-0.464 0.539656582 0.539656582 0.539656582 2.5E-01 -- 98-82-8 Cumene 9.21 0.470155356 0.470155356 0.470155356 4.3E+00 -8.3E+01 1.0E-02 107-06-2 Dichloroethane, 1,2-3.22 0.048242028 0.048242028 0.048242028 1.6E-01 1.1E-01 1.5E+00 1.4E-06 2.1E-02 108-20-3 Diisopropyl Ether 10.4 0.10466067 0.10466067 0.10466067 1.1E+00 -1.5E+02 1.5E-03 7782-41-4 Fluorine (Soluble Fluoride)0.136 -2.7E+001634-04-4 Methyl tert-Butyl Ether (MTBE)11.4 0.023998365 0.023998365 0.023998365 2.7E-01 1.1E+01 6.3E+02 2.5E-08 8.7E-05 91-20-3 ~Naphthalene 14.7 0.017988553 0.017988553 0.017988553 2.6E-01 8.3E-02 6.3E-01 3.2E-06 8.5E-02 103-65-1 Propyl benzene 0.72 0.429272281 0.429272281 0.429272281 3.1E-01 -2.1E+02 3.0E-04 127-18-4 Tetrachloroethylene 1.6 0.723630417 0.723630417 0.723630417 1.2E+00 1.1E+01 8.3E+00 1.1E-07 2.8E-02108-88-3 Toluene 0.382 0.271463614 0.271463614 0.271463614 1.0E-01 -1.0E+03 2.0E-05 79-01-6 Trichloroethylene 0.214 0.402698283 0.402698283 0.402698283 8.6E-02 4.8E-01 4.2E-01 1.8E-07 4.1E-02 Cumulative: 3.6E-04 4.3E+00 Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals. DSCA Indoor Air Risk Calculator - Cumulative Risk for Resident Version 11, July 2023 DC410064 Frye & Webster Cleaners/608 Elwell Avenue, Greensboro, North Carolina Frye & Webster Cleaners/608 Elwell Avenue, Greensboro, North Carolina DSCA ID No: Name/Address of DSCA Site: Name/Address of Sampling Location: Sampling Date:2/9/2024 Sample ID:MW-1 Average Groundwater Temperature (°C):25 (Use default of 25⁰C unless site-specific data is available confirming the groundwater temperature during worst-case summer conditions.) CAS # Chemical Name: Groundwater Concentration (ug/L) Henry's Constant at 25° (dimensionless) Temperature Adjusted Henry's Constant (dimensionless) Henry's Constant used for calculations (dimensionless) Calculated Indoor Air Concentration (ug/m3) Indoor Air Screening Level for Carcinogens @ TCR = 1E-06 Indoor Air Screening Level for Non- Carcinogens @ THQ = 0.2 Calculated Carcinogenic Risk Calculated Non- Carcinogenic Hazard Quotient 71-43-2 Benzene 561 0.226901063 0.226901063 0.226901063 1.3E+02 1.6E+00 2.6E+01 8.1E-05 9.7E-01 92-87-5 Benzidine 3.96 2.11365E-09 2.11365E-09 2.11365E-09 8.4E-09 1.8E-04 - 135-98-8 Butylbenzene, sec-0.867 0.71954211 0.71954211 0.71954211 6.2E-01 -- 98-06-6 Butylbenzene, tert-0.464 0.539656582 0.539656582 0.539656582 2.5E-01 -- 98-82-8 Cumene 9.21 0.470155356 0.470155356 0.470155356 4.3E+00 -3.5E+02 2.5E-03107-06-2 Dichloroethane, 1,2-3.22 0.048242028 0.048242028 0.048242028 1.6E-01 4.7E-01 6.1E+00 3.3E-07 5.1E-03 108-20-3 Diisopropyl Ether 10.4 0.10466067 0.10466067 0.10466067 1.1E+00 -6.1E+02 3.6E-04 7782-41-4 Fluorine (Soluble Fluoride)0.136 -1.1E+01 1634-04-4 Methyl tert-Butyl Ether (MTBE)11.4 0.023998365 0.023998365 0.023998365 2.7E-01 4.7E+01 2.6E+03 5.8E-09 2.1E-05 91-20-3 ~Naphthalene 14.7 0.017988553 0.017988553 0.017988553 2.6E-01 3.6E-01 2.6E+00 7.3E-07 2.0E-02 103-65-1 Propyl benzene 0.72 0.429272281 0.429272281 0.429272281 3.1E-01 -8.8E+02 7.1E-05 127-18-4 Tetrachloroethylene 1.6 0.723630417 0.723630417 0.723630417 1.2E+00 4.7E+01 3.5E+01 2.5E-08 6.6E-03 108-88-3 Toluene 0.382 0.271463614 0.271463614 0.271463614 1.0E-01 -4.4E+03 4.7E-06 79-01-6 Trichloroethylene 0.214 0.402698283 0.402698283 0.402698283 8.6E-02 3.0E+00 1.8E+00 2.9E-08 9.8E-03 Cumulative: 8.2E-05 1.0E+00 Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals. DSCA Indoor Air Risk Calculator - Cumulative Risk for Non-Residential Worker Version 11, July 2023 DC410064 Frye & Webster Cleaners/608 Elwell Avenue, Greensboro, North Carolina Frye & Webster Cleaners/608 Elwell Avenue, Greensboro, North Carolina DSCA ID No: Name/Address of DSCA Site: Name/Address of Sampling Location: Sampling Date:2/9/2024 Sample ID:MW-2 Average Groundwater Temperature (°C):25 (Use default of 25⁰C unless site-specific data is available confirming the groundwater temperature during worst-case summer conditions.) CAS # Chemical Name: Groundwater Concentration (ug/L) Henry's Constant at 25°C (dimensionless) Temperature Adjusted Henry's Constant (dimensionless) Henry's Constant used for calculations (dimensionless) Calculated Indoor Air Concentration (ug/m3) Indoor Air Screening Level for Carcinogens @ TCR = 1E-06 Indoor Air Screening Level for Non- Carcinogens @ THQ = 0.2 Calculated Carcinogenic Risk Calculated Non- Carcinogenic Hazard Quotient 67-64-1 Acetone 67.9 0.001430908 0.001430908 0.001430908 9.7E-02 -- 71-43-2 Benzene 5700 0.226901063 0.226901063 0.226901063 1.3E+03 3.6E-01 6.3E+00 3.6E-03 4.1E+01 104-51-8 Butylbenzene, n-3.4 0.650040883 0.650040883 0.650040883 2.2E+00 -- 135-98-8 Butylbenzene, sec-2.76 0.71954211 0.71954211 0.71954211 2.0E+00 -- 98-06-6 Butylbenzene, tert-0.665 0.539656582 0.539656582 0.539656582 3.6E-01 -- 108-90-7 Chlorobenzene 10.6 0.127146361 0.127146361 0.127146361 1.3E+00 -1.0E+01 2.6E-02 67-66-3 Chloroform 19.5 0.150040883 0.150040883 0.150040883 2.9E+00 1.2E-01 2.0E+01 2.4E-05 2.9E-02 98-82-8 Cumene 26.8 0.470155356 0.470155356 0.470155356 1.3E+01 -8.3E+01 3.0E-02106-46-7 Dichlorobenzene, 1,4-1.49 0.098528209 0.098528209 0.098528209 1.5E-01 2.6E-01 1.7E+02 5.8E-07 1.8E-04 107-06-2 Dichloroethane, 1,2-73.5 0.048242028 0.048242028 0.048242028 3.5E+00 1.1E-01 1.5E+00 3.3E-05 4.9E-01 156-59-2 Dichloroethylene, cis-1,2-3.61 0.166802944 0.166802944 0.166802944 6.0E-01 -8.3E+00 1.4E-02 78-87-5 Dichloropropane, 1,2-4.92 0.11529027 0.11529027 0.11529027 5.7E-01 7.6E-01 8.3E-01 7.5E-07 1.4E-01108-20-3 Diisopropyl Ether 301 0.10466067 0.10466067 0.10466067 3.2E+01 -1.5E+02 4.3E-02 100-41-4 Ethylbenzene 170 0.322158626 0.322158626 0.322158626 5.5E+01 1.1E+00 2.1E+02 4.9E-05 5.3E-02 78-93-3 Methyl Ethyl Ketone (2-Butanone)8.7 0.002326247 0.002326247 0.002326247 2.0E-02 -1.0E+03 3.9E-06 1634-04-4 Methyl tert-Butyl Ether (MTBE)4620 0.023998365 0.023998365 0.023998365 1.1E+02 1.1E+01 6.3E+02 1.0E-05 3.5E-0275-09-2 Methylene Chloride 2.32 0.132869992 0.132869992 0.132869992 3.1E-01 1.0E+02 1.3E+02 3.0E-09 4.9E-04 108-95-2 Phenol 11.7 1.36141E-05 1.36141E-05 1.36141E-05 1.6E-04 -4.2E+01 83-32-9 ~Acenaphthene 0.0937 0.007522486 0.007522486 0.007522486 7.0E-04 -- 56-55-3 ~Benz[a]anthracene 0.214 0.000490597 0.000490597 0.000490597 1.0E-04 1.7E-02 -6.2E-09 50-32-8 ~Benzo[a]pyrene 0.12 1.86836E-05 1.86836E-05 1.86836E-05 2.2E-06 1.7E-03 4.2E-04205-99-2 ~Benzo[b]fluoranthene 0.191 2.68602E-05 2.68602E-05 2.68602E-05 5.1E-06 1.7E-02 - 207-08-9 ~Benzo[k]fluoranthene 0.265 2.38757E-05 2.38757E-05 2.38757E-05 6.3E-06 1.7E-01 - 218-01-9 ~Chrysene 0.217 0.000213818 0.000213818 0.000213818 4.6E-05 1.7E+00 - 53-70-3 ~Dibenz[a,h]anthracene 0.303 5.76451E-06 5.76451E-06 5.76451E-06 1.7E-06 1.7E-03 -206-44-0 ~Fluoranthene 0.105 0.000362224 0.000362224 0.000362224 3.8E-05 -- 86-73-7 ~Fluorene 0.177 0.003932952 0.003932952 0.003932952 7.0E-04 -- 91-20-3 ~Naphthalene 26.6 0.017988553 0.017988553 0.017988553 4.8E-01 8.3E-02 6.3E-01 5.8E-06 1.5E-01 103-65-1 Propyl benzene 36.8 0.429272281 0.429272281 0.429272281 1.6E+01 -2.1E+02 1.5E-02100-42-5 Styrene 3.87 0.112428455 0.112428455 0.112428455 4.4E-01 -2.1E+02 4.2E-04 108-88-3 Toluene 55.1 0.271463614 0.271463614 0.271463614 1.5E+01 -1.0E+03 2.9E-03 79-00-5 Trichloroethane, 1,1,2-1.44 0.033687653 0.033687653 0.033687653 4.9E-02 1.8E-01 4.2E-02 2.8E-07 2.3E-01 79-01-6 Trichloroethylene 4.35 0.402698283 0.402698283 0.402698283 1.8E+00 4.8E-01 4.2E-01 3.7E-06 8.4E-01526-73-8 Trimethylbenzene, 1,2,3-5.96 0.178250204 0.178250204 0.178250204 1.1E+00 -1.3E+01 1.7E-02 95-63-6 Trimethylbenzene, 1,2,4-98.3 0.251839738 0.251839738 0.251839738 2.5E+01 -1.3E+01 4.0E-01 108-67-8 Trimethylbenzene, 1,3,5-21.2 0.358544563 0.358544563 0.358544563 7.6E+00 -1.3E+01 1.2E-01 1330-20-7 Xylenes 129 0.271054783 0.271054783 0.271054783 3.5E+01 -2.1E+01 3.4E-01 Cumulative: 3.7E-03 4.4E+01 Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals. DSCA Indoor Air Risk Calculator - Cumulative Risk for Resident Version 11, July 2023 DC410064 Frye & Webster Cleaners/608 Elwell Avenue, Greensboro, North Carolina Frye & Webster Cleaners/608 Elwell Avenue, Greensboro, North Carolina DSCA ID No: Name/Address of DSCA Site: Name/Address of Sampling Location: Sampling Date:2/9/2024 Sample ID:MW-2 Average Groundwater Temperature (°C):25 (Use default of 25⁰C unless site-specific data is available confirming the groundwater temperature during worst-case summer conditions.) CAS # Chemical Name: Groundwater Concentration (ug/L) Henry's Constant at 25° (dimensionless) Temperature Adjusted Henry's Constant (dimensionless) Henry's Constant used for calculations (dimensionless) Calculated Indoor Air Concentration (ug/m3) Indoor Air Screening Level for Carcinogens @ TCR = 1E-06 Indoor Air Screening Level for Non- Carcinogens @ THQ = 0.2 Calculated Carcinogenic Risk Calculated Non- Carcinogenic Hazard Quotient 67-64-1 Acetone 67.9 0.001430908 0.001430908 0.001430908 9.7E-02 -- 71-43-2 Benzene 5700 0.226901063 0.226901063 0.226901063 1.3E+03 1.6E+00 2.6E+01 8.2E-04 9.8E+00 104-51-8 Butylbenzene, n-3.4 0.650040883 0.650040883 0.650040883 2.2E+00 -- 135-98-8 Butylbenzene, sec-2.76 0.71954211 0.71954211 0.71954211 2.0E+00 -- 98-06-6 Butylbenzene, tert-0.665 0.539656582 0.539656582 0.539656582 3.6E-01 --108-90-7 Chlorobenzene 10.6 0.127146361 0.127146361 0.127146361 1.3E+00 -4.4E+01 6.2E-03 67-66-3 Chloroform 19.5 0.150040883 0.150040883 0.150040883 2.9E+00 5.3E-01 8.6E+01 5.5E-06 6.8E-03 98-82-8 Cumene 26.8 0.470155356 0.470155356 0.470155356 1.3E+01 -3.5E+02 7.2E-03 106-46-7 Dichlorobenzene, 1,4-1.49 0.098528209 0.098528209 0.098528209 1.5E-01 1.1E+00 7.0E+02 1.3E-07 4.2E-05 107-06-2 Dichloroethane, 1,2-73.5 0.048242028 0.048242028 0.048242028 3.5E+00 4.7E-01 6.1E+00 7.5E-06 1.2E-01 156-59-2 Dichloroethylene, cis-1,2-3.61 0.166802944 0.166802944 0.166802944 6.0E-01 -3.5E+01 3.4E-03 78-87-5 Dichloropropane, 1,2-4.92 0.11529027 0.11529027 0.11529027 5.7E-01 3.3E+00 3.5E+00 1.7E-07 3.2E-02 108-20-3 Diisopropyl Ether 301 0.10466067 0.10466067 0.10466067 3.2E+01 -6.1E+02 1.0E-02 100-41-4 Ethylbenzene 170 0.322158626 0.322158626 0.322158626 5.5E+01 4.9E+00 8.8E+02 1.1E-05 1.3E-02 78-93-3 Methyl Ethyl Ketone (2-Butanone)8.7 0.002326247 0.002326247 0.002326247 2.0E-02 -4.4E+03 9.2E-07 1634-04-4 Methyl tert-Butyl Ether (MTBE)4620 0.023998365 0.023998365 0.023998365 1.1E+02 4.7E+01 2.6E+03 2.4E-06 8.4E-03 75-09-2 Methylene Chloride 2.32 0.132869992 0.132869992 0.132869992 3.1E-01 1.2E+03 5.3E+02 2.5E-10 1.2E-04 108-95-2 Phenol 11.7 1.36141E-05 1.36141E-05 1.36141E-05 1.6E-04 -1.8E+0283-32-9 ~Acenaphthene 0.0937 0.007522486 0.007522486 0.007522486 7.0E-04 -- 56-55-3 ~Benz[a]anthracene 0.214 0.000490597 0.000490597 0.000490597 1.0E-04 2.0E-01 -5.1E-10 50-32-8 ~Benzo[a]pyrene 0.12 1.86836E-05 1.86836E-05 1.86836E-05 2.2E-06 2.0E-02 1.8E-03 205-99-2 ~Benzo[b]fluoranthene 0.191 2.68602E-05 2.68602E-05 2.68602E-05 5.1E-06 2.0E-01 - 207-08-9 ~Benzo[k]fluoranthene 0.265 2.38757E-05 2.38757E-05 2.38757E-05 6.3E-06 2.0E+00 - 218-01-9 ~Chrysene 0.217 0.000213818 0.000213818 0.000213818 4.6E-05 2.0E+01 - 53-70-3 ~Dibenz[a,h]anthracene 0.303 5.76451E-06 5.76451E-06 5.76451E-06 1.7E-06 2.0E-02 - 206-44-0 ~Fluoranthene 0.105 0.000362224 0.000362224 0.000362224 3.8E-05 -- 86-73-7 ~Fluorene 0.177 0.003932952 0.003932952 0.003932952 7.0E-04 -- 91-20-3 ~Naphthalene 26.6 0.017988553 0.017988553 0.017988553 4.8E-01 3.6E-01 2.6E+00 1.3E-06 3.6E-02 103-65-1 Propyl benzene 36.8 0.429272281 0.429272281 0.429272281 1.6E+01 -8.8E+02 3.6E-03 100-42-5 Styrene 3.87 0.112428455 0.112428455 0.112428455 4.4E-01 -8.8E+02 9.9E-05 108-88-3 Toluene 55.1 0.271463614 0.271463614 0.271463614 1.5E+01 -4.4E+03 6.8E-0479-00-5 Trichloroethane, 1,1,2-1.44 0.033687653 0.033687653 0.033687653 4.9E-02 7.7E-01 1.8E-01 6.3E-08 5.5E-02 79-01-6 Trichloroethylene 4.35 0.402698283 0.402698283 0.402698283 1.8E+00 3.0E+00 1.8E+00 5.9E-07 2.0E-01 526-73-8 Trimethylbenzene, 1,2,3-5.96 0.178250204 0.178250204 0.178250204 1.1E+00 -5.3E+01 4.0E-03 95-63-6 Trimethylbenzene, 1,2,4-98.3 0.251839738 0.251839738 0.251839738 2.5E+01 -5.3E+01 9.4E-02108-67-8 Trimethylbenzene, 1,3,5-21.2 0.358544563 0.358544563 0.358544563 7.6E+00 -5.3E+01 2.9E-02 1330-20-7 Xylenes 129 0.271054783 0.271054783 0.271054783 3.5E+01 -8.8E+01 8.0E-02 Cumulative: 8.5E-04 1.1E+01 Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals. DSCA Indoor Air Risk Calculator - Cumulative Risk for Non-Residential Worker Version 11, July 2023 DC410064 Frye & Webster Cleaners/608 Elwell Avenue, Greensboro, North Carolina Frye & Webster Cleaners/608 Elwell Avenue, Greensboro, North Carolina DSCA ID No: Name/Address of DSCA Site: Name/Address of Sampling Location: Sampling Date:2/9/2024 Sample ID:MW-3 Average Groundwater Temperature (°C):25 (Use default of 25⁰C unless site-specific data is available confirming the groundwater temperature during worst-case summer conditions.) CAS # Chemical Name: Groundwater Concentration (ug/L) Henry's Constant at 25°C (dimensionless) Temperature Adjusted Henry's Constant (dimensionless) Henry's Constant used for calculations (dimensionless) Calculated Indoor Air Concentration (ug/m3) Indoor Air Screening Level for Carcinogens @ TCR = 1E-06 Indoor Air Screening Level for Non- Carcinogens @ THQ = 0.2 Calculated Carcinogenic Risk Calculated Non- Carcinogenic Hazard Quotient 67-64-1 Acetone 33.3 0.001430908 0.001430908 0.001430908 4.8E-02 -- 71-43-2 Benzene 2.3 0.226901063 0.226901063 0.226901063 5.2E-01 3.6E-01 6.3E+00 1.4E-06 1.7E-02 Cumulative: 1.4E-06 1.7E-02 Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals. DSCA Indoor Air Risk Calculator - Cumulative Risk for Resident Version 11, July 2023 DC410064 Frye & Webster Cleaners/608 Elwell Avenue, Greensboro, North Carolina Frye & Webster Cleaners/608 Elwell Avenue, Greensboro, North Carolina DSCA ID No: Name/Address of DSCA Site: Name/Address of Sampling Location: Sampling Date:2/9/2024 Sample ID:MW-3 Average Groundwater Temperature (°C):25 (Use default of 25⁰C unless site-specific data is available confirming the groundwater temperature during worst-case summer conditions.) CAS # Chemical Name: Groundwater Concentration (ug/L) Henry's Constant at 25° (dimensionless) Temperature Adjusted Henry's Constant (dimensionless) Henry's Constant used for calculations (dimensionless) Calculated Indoor Air Concentration (ug/m3) Indoor Air Screening Level for Carcinogens @ TCR = 1E-06 Indoor Air Screening Level for Non- Carcinogens @ THQ = 0.2 Calculated Carcinogenic Risk Calculated Non- Carcinogenic Hazard Quotient 67-64-1 Acetone 33.3 0.001430908 0.001430908 0.001430908 4.8E-02 -- 71-43-2 Benzene 2.3 0.226901063 0.226901063 0.226901063 5.2E-01 1.6E+00 2.6E+01 3.3E-07 4.0E-03 Cumulative: 3.3E-07 4.0E-03 Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals. DSCA Indoor Air Risk Calculator - Cumulative Risk for Non-Residential Worker Version 11, July 2023 DC410064 Frye & Webster Cleaners/608 Elwell Avenue, Greensboro, North Carolina Frye & Webster Cleaners/608 Elwell Avenue, Greensboro, North Carolina DSCA ID No: Name/Address of DSCA Site: Name/Address of Sampling Location: Sampling Date:2/9/2024 Sample ID:MW-4 Average Groundwater Temperature (°C):25 (Use default of 25⁰C unless site-specific data is available confirming the groundwater temperature during worst-case summer conditions.) CAS # Chemical Name: Groundwater Concentration (ug/L) Henry's Constant at 25°C (dimensionless) Temperature Adjusted Henry's Constant (dimensionless) Henry's Constant used for calculations (dimensionless) Calculated Indoor Air Concentration (ug/m3) Indoor Air Screening Level for Carcinogens @ TCR = 1E-06 Indoor Air Screening Level for Non- Carcinogens @ THQ = 0.2 Calculated Carcinogenic Risk Calculated Non- Carcinogenic Hazard Quotient 67-64-1 Acetone 17 0.001430908 0.001430908 0.001430908 2.4E-02 -- 71-43-2 Benzene 17.1 0.226901063 0.226901063 0.226901063 3.9E+00 3.6E-01 6.3E+00 1.1E-05 1.2E-01 135-98-8 Butylbenzene, sec-0.41 0.71954211 0.71954211 0.71954211 3.0E-01 -- 98-06-6 Butylbenzene, tert-0.219 0.539656582 0.539656582 0.539656582 1.2E-01 -- 98-82-8 Cumene 0.431 0.470155356 0.470155356 0.470155356 2.0E-01 -8.3E+01 4.9E-04 75-35-4 Dichloroethylene, 1,1-0.27 1.067048242 1.067048242 1.067048242 2.9E-01 -4.2E+01 1.4E-03 156-59-2 Dichloroethylene, cis-1,2-351 0.166802944 0.166802944 0.166802944 5.9E+01 -8.3E+00 1.4E+00 156-60-5 Dichloroethylene, trans-1,2-15.6 0.383483238 0.383483238 0.383483238 6.0E+00 -8.3E+00 1.4E-01108-20-3 Diisopropyl Ether 0.244 0.10466067 0.10466067 0.10466067 2.6E-02 -1.5E+02 3.5E-05 100-41-4 Ethylbenzene 0.929 0.322158626 0.322158626 0.322158626 3.0E-01 1.1E+00 2.1E+02 2.7E-07 2.9E-04 78-93-3 Methyl Ethyl Ketone (2-Butanone)2.68 0.002326247 0.002326247 0.002326247 6.2E-03 -1.0E+03 1.2E-06 1634-04-4 Methyl tert-Butyl Ether (MTBE)1.37 0.023998365 0.023998365 0.023998365 3.3E-02 1.1E+01 6.3E+02 3.0E-09 1.1E-05103-65-1 Propyl benzene 0.362 0.429272281 0.429272281 0.429272281 1.6E-01 -2.1E+02 1.5E-04 127-18-4 Tetrachloroethylene 63.3 0.723630417 0.723630417 0.723630417 4.6E+01 1.1E+01 8.3E+00 4.2E-06 1.1E+00 108-88-3 Toluene 0.413 0.271463614 0.271463614 0.271463614 1.1E-01 -1.0E+03 2.2E-05 79-01-6 Trichloroethylene 52.6 0.402698283 0.402698283 0.402698283 2.1E+01 4.8E-01 4.2E-01 4.4E-05 1.0E+01526-73-8 Trimethylbenzene, 1,2,3-1.21 0.178250204 0.178250204 0.178250204 2.2E-01 -1.3E+01 3.4E-03 95-63-6 Trimethylbenzene, 1,2,4-2.92 0.251839738 0.251839738 0.251839738 7.4E-01 -1.3E+01 1.2E-02 108-67-8 Trimethylbenzene, 1,3,5-0.812 0.358544563 0.358544563 0.358544563 2.9E-01 -1.3E+01 4.7E-03 75-01-4 Vinyl Chloride 1.15 1.136549469 1.136549469 1.136549469 1.3E+00 1.7E-01 1.7E+01 7.8E-06 1.6E-021330-20-7 Xylenes 0.963 0.271054783 0.271054783 0.271054783 2.6E-01 -2.1E+01 2.5E-03 Cumulative: 6.7E-05 1.3E+01 Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals. DSCA Indoor Air Risk Calculator - Cumulative Risk for Resident Version 11, July 2023 DC410064 Frye & Webster Cleaners/608 Elwell Avenue, Greensboro, North Carolina Frye & Webster Cleaners/608 Elwell Avenue, Greensboro, North Carolina DSCA ID No: Name/Address of DSCA Site: Name/Address of Sampling Location: Sampling Date:2/9/2024 Sample ID:MW-4 Average Groundwater Temperature (°C):25 (Use default of 25⁰C unless site-specific data is available confirming the groundwater temperature during worst-case summer conditions.) CAS # Chemical Name: Groundwater Concentration (ug/L) Henry's Constant at 25° (dimensionless) Temperature Adjusted Henry's Constant (dimensionless) Henry's Constant used for calculations (dimensionless) Calculated Indoor Air Concentration (ug/m3) Indoor Air Screening Level for Carcinogens @ TCR = 1E-06 Indoor Air Screening Level for Non- Carcinogens @ THQ = 0.2 Calculated Carcinogenic Risk Calculated Non- Carcinogenic Hazard Quotient 67-64-1 Acetone 17 0.001430908 0.001430908 0.001430908 2.4E-02 -- 71-43-2 Benzene 17.1 0.226901063 0.226901063 0.226901063 3.9E+00 1.6E+00 2.6E+01 2.5E-06 3.0E-02 135-98-8 Butylbenzene, sec-0.41 0.71954211 0.71954211 0.71954211 3.0E-01 -- 98-06-6 Butylbenzene, tert-0.219 0.539656582 0.539656582 0.539656582 1.2E-01 -- 98-82-8 Cumene 0.431 0.470155356 0.470155356 0.470155356 2.0E-01 -3.5E+02 1.2E-0475-35-4 Dichloroethylene, 1,1-0.27 1.067048242 1.067048242 1.067048242 2.9E-01 -1.8E+02 3.3E-04 156-59-2 Dichloroethylene, cis-1,2-351 0.166802944 0.166802944 0.166802944 5.9E+01 -3.5E+01 3.3E-01 156-60-5 Dichloroethylene, trans-1,2-15.6 0.383483238 0.383483238 0.383483238 6.0E+00 -3.5E+01 3.4E-02 108-20-3 Diisopropyl Ether 0.244 0.10466067 0.10466067 0.10466067 2.6E-02 -6.1E+02 8.3E-06 100-41-4 Ethylbenzene 0.929 0.322158626 0.322158626 0.322158626 3.0E-01 4.9E+00 8.8E+02 6.1E-08 6.8E-05 78-93-3 Methyl Ethyl Ketone (2-Butanone)2.68 0.002326247 0.002326247 0.002326247 6.2E-03 -4.4E+03 2.8E-07 1634-04-4 Methyl tert-Butyl Ether (MTBE)1.37 0.023998365 0.023998365 0.023998365 3.3E-02 4.7E+01 2.6E+03 7.0E-10 2.5E-06 103-65-1 Propyl benzene 0.362 0.429272281 0.429272281 0.429272281 1.6E-01 -8.8E+02 3.5E-05 127-18-4 Tetrachloroethylene 63.3 0.723630417 0.723630417 0.723630417 4.6E+01 4.7E+01 3.5E+01 9.7E-07 2.6E-01 108-88-3 Toluene 0.413 0.271463614 0.271463614 0.271463614 1.1E-01 -4.4E+03 5.1E-06 79-01-6 Trichloroethylene 52.6 0.402698283 0.402698283 0.402698283 2.1E+01 3.0E+00 1.8E+00 7.1E-06 2.4E+00 526-73-8 Trimethylbenzene, 1,2,3-1.21 0.178250204 0.178250204 0.178250204 2.2E-01 -5.3E+01 8.2E-04 95-63-6 Trimethylbenzene, 1,2,4-2.92 0.251839738 0.251839738 0.251839738 7.4E-01 -5.3E+01 2.8E-03108-67-8 Trimethylbenzene, 1,3,5-0.812 0.358544563 0.358544563 0.358544563 2.9E-01 -5.3E+01 1.1E-03 75-01-4 Vinyl Chloride 1.15 1.136549469 1.136549469 1.136549469 1.3E+00 2.8E+00 7.0E+01 4.7E-07 3.7E-03 1330-20-7 Xylenes 0.963 0.271054783 0.271054783 0.271054783 2.6E-01 -8.8E+01 6.0E-04 Cumulative: 1.1E-05 3.1E+00 Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals. DSCA Indoor Air Risk Calculator - Cumulative Risk for Non-Residential Worker Version 11, July 2023 DC410064 Frye & Webster Cleaners/608 Elwell Avenue, Greensboro, North Carolina Frye & Webster Cleaners/608 Elwell Avenue, Greensboro, North Carolina Appendix G Photographic Log DSCA Site DC410064 Frye & Webster Cleaners Date of Photograph: 1/29/2024 Direction: Southeast Description: Subject Property, 608 and 606 Elwell Avenue Photolog, Photo No.1 DSCA Site DC410064 Frye & Webster Cleaners Date of Photograph: 1/30/2024 Direction: South Description: Back of 608 Elwell Avenue dry- cleaner facility Photolog, Photo No.2 DSCA Site DC410064 Frye & Webster Cleaners Date of Photograph: 1/31/2024 Direction: East Description: Area between 608 Elwell Ave and adjacent 610 Elwell Ave Photolog, Photo No.3 DSCA Site DC410064 Frye & Webster Cleaners Date of Photograph: 1/31/2024 Direction: West Description: Inside of vacant 606 Elwell Avenue building area; SG-10 sample location in foreground. Photolog, Photo No.4 DSCA Site DC410064 Frye & Webster Cleaners Date of Photograph: 3/15/2024 Direction: North Description: SG-11 location. Fire door between 608 and 606 Elwell Avenue form 606 side; unlabeled drum removed by dry-cleaner operator in May 2024. Photolog, Photo No.5 DSCA Site DC410064 Frye & Webster Cleaners Date of Photograph: 3/15/2024 Direction: East Description: Interior of dry-cleaning facility; SB-4/SG-2 sample location in foreground Photolog, Photo No.6 DSCA Site DC410064 Frye & Webster Cleaners Date of Photograph: 3/15/2024 Direction: South Description: Fire door between 608 and 606 Elwell Avenue from 608 side (behind tool wall); SG-1/SB-3 sample location in foreground Photolog, Photo No.7 DSCA Site DC410064 Frye & Webster Cleaners Date of Photograph: 1/30/2024 Direction: South Description: MW-1 installation at northwest corner of property Photolog, Photo No.8 DSCA Site DC410064 Frye & Webster Cleaners Date of Photograph: 1/30/2024 Direction: South Description: MW-2 installation on southwest corner of property Photolog, Photo No.9 DSCA Site DC410064 Frye & Webster Cleaners Date of Photograph: 1/30/2024 Direction: South Description: MW-3 installation on southeast corner of property Photolog, Photo No.10 DSCA Site DC410064 Frye & Webster Cleaners Date of Photograph: 2/1/2024 Direction: North Description: MW-4 and SG-4/SB-7 sample location on northeast corner of property Photolog, Photo No.11 DSCA Site DC410064 Frye & Webster Cleaners Date of Photograph: 1/30/2024 Direction: Northeast Description: Back wall of dry-cleaning facility Photolog, Photo No.12 DSCA Site DC410064 Frye & Webster Cleaners Date of Photograph: 3/15/2024 Direction: West Description: Chemical storage area of dry- cleaning facility Photolog, Photo No.13 DSCA Site DC410064 Frye & Webster Cleaners Date of Photograph: 3/15/2024 Direction: Northwest Description: Additional chemical storage within dry-cleaning facility Photolog, Photo No.14 DSCA Site DC410064 Frye & Webster Cleaners Date of Photograph: 3/15/2024 Direction: South Description: Additional chemical storage within dry-cleaning facility Photolog, Photo No.15 Appendix H Waste Manifest