Loading...
HomeMy WebLinkAboutDERR-2025-001865TABLE OF CONTENTS 1.0 INTRODUCTION............................................ 1 1.1 Site and Surrounding Property Histories........................ 4 2.0 ADDITIONAL SITE INVESTIGATION SAMPLING ACTIVITIES............... 7 2.1 Soil Gas Sampling....................................... 8 2.2 Equipment Decontamination Procedures........................ 8 3.0 LABORATORY RESULTS....................................... 9 3.1 Soil Gas Results........................................ 9 3.2 Quality Control/Assurance Data Validation Report................ 10 4.0 CONCLUSIONS............................................. 11 5.0 LIMITATIONS.............................................. 12 FIGURES AND APPENDIXES Forsey Monitoring Well and Soil Gas Locations Figures 1A-1C Analytical Results Tables Appendix A Pace Laboratory Reports Appendix B Ogden City Redevelopment Agency December 30, 2024 Page 1 1.0 INTRODUCTION Applied Geotechnical Engineering Consultants Inc. (AGEC) recently completed a fourth Site Characterization Work Plan (SCW) for the vicinity of the former Forsey Cleaners & Laundry (also known as 4C Laundromat) property at 856 East 25th Street in Ogden, Utah. The SCW was produced for Ogden City Redevelopment Agency and the Utah Department of Environmental Quality (UDEQ) Division of Environmental Response and Remediation (DERR). Ogden City Redevelopment Agency has entered into an agreement (C115) with the Utah DERR Voluntary Cleanup Program (VCP). The VCP agreement is intended to help determine the presence of, and if present, remediate or mitigate impacts due to the historical dry-cleaning operations on the property. The fourth SCW, Sampling and Analysis Plan (SAP) and Quality Assurance Project Plan (QAPP) were submitted to the Utah DERR in a report dated December 2, 2024. AGEC has completed two Phase 1 Environmental Site Assessments and eight sampling investigations on the subject property and adjacent properties to the west. Findings of the sampling investigations were reported under AGEC Project No. 1200034, dated January 29, 2020, AGEC Project No. 1200988, dated January 8, 2021, AGEC Project No. 1210017, dated January 28, 2021, AGEC Project No. 1210086, dated February 22, 2021, AGEC Project No. 1210149, dated March 18, 2021 and AGEC Project No. 1210230, dated April 22, 2021. A Site Characterization Work Plan (SCW), Sampling and Analysis Plan (SAP) and Quality Assurance Project Plan (QAPP) were submitted to the Utah DERR in a report dated August 11, 2022 and was approved in a letter dated June 23, 2023. The SCW, SAP and QAPP were approved in a letter from the DERR on August 23, 2022. A Site Characterization Summary Report (SCSR) was submitted to the Utah DERR in a report dated February 21, 2023, with a final revision dated May 30, 2023. The SCSR included the installation and sampling of additional monitoring wells to help delineate the extent of a plume of primarily perchloroethylene or tetrachloroethylene (PCE or perc) groundwater contamination that extends westward from the former Forsey Cleaners & Laundry (Forsey) building. To help determine if the PCE in the groundwater extending underneath the adjacent apartment building at 846 East 25 Street is a vapor intrusion risk, a limited indoor air and subslab soilth gas sampling investigation was performed on July 6, 2023. The subslab sampling was conducted below the concrete floor slab in the basement of the building. Two subslab soil gas samples (VP-3 and VP-4) were obtained by using a hammer drill with a 0.625-inch Ogden City Redevelopment Agency December 30, 2024 Page 2 concrete drill bit to drill holes through the concrete slab. An indoor air sample was obtained with the use of a Summa canister. The sampling location (approximately 3 feet south and 24 feet west of the northeastern interior building corner) was in the lowest inhabitable space (basement level) in the northern end of the building. The subslab soil vapor analytical results were compared to the May 2023 US EPA risk-based Residential and Commercial Target Subslab and Near-source Soil Gas Concentration Regional Screening Levels with THQ of 1.0, when available. The only VOCs detected above the EPA Residential and Commercial Regional Screening Levels were PCE and TCE. The only VOC detected in the indoor air samples above the EPA Residential Air Regional Screening Levels was PCE. Three additional 15-foot-deep wells (MW-48 to 50) were installed west of the Fontanelle Apartments on a parcel owned by the Junior League of Ogden. No VOCs were detected in the soil or water samples from MW-48 to MW-50 when sampled in July 2023. Groundwater samples were obtained from the existing deep (30 or 50-foot) monitoring wells MW-33 to MW-40. No VOCs were detected in the water samples above the laboratory reported detection limits from MW-33 to MW-40 in the July 2023 sampling event. Results of the additional site characterization work were submitted in a report dated October 10, 2023 under AGEC Project No. 1230329. A Remedial Action Plan (RAP) was submitted to the Utah DERR in a report dated May 31, 2023. This RAP focused on the planned excavation and removal of the PCE-impacted soils below the Forsey building slab. On June 5, 2023, a notice was published in the Ogden Standard Examiner beginning a required 30-day public comment period for the RAP. In addition, adjacent landowners were also notified of the project. The DERR subsequently accepted the RAP in a letter dated July 27, 2023. To help remove the presumed source of the PCE groundwater contamination from the subject property, the PCE-impacted soil below the former Forsey Cleaners building slab was removed and properly disposed of at a regulated and permitted landfill. The excavation work was performed between July 11 and August 2, 2023. Based on measurements of the final excavation limits of approximately 55 feet wide east-west, 27 to 40 feet north-south and between 3 to 8 feet deep, approximately 450 cubic yards of soil were excavated and removed from the site. Disposal manifests from Moulding & Sons Landfill indicate that approximately 1,351,000 pounds (675.5 tons) of soil were hauled to the landfill for disposal. As the excavation work continued, a total of 31 confirmation soil samples were obtained along with seven site characterization samples. Based on the sampling results, the remaining PCE soil contamination is significantly below the EPA residential screening limits of 24 µg/kg. A Remedial Action Summary Report was submitted in a report dated October 27, 2023. Ogden City Redevelopment Agency December 30, 2024 Page 3 A third SCWP was submitted on July 29, 2024 and was intended to help further characterize the property as the site is proposed to be redeveloped primarily for residential uses. Groundwater samples were subsequently obtained from the existing monitoring wells MW-10, 12 to 20, 22 to 25, 29 to 32 and 37 to 50 on August 19 and 20, 2024. To help determine if the PCE in the groundwater extending underneath the adjacent apartment building at 846 East 25th Street and near the Fontanelle apartment building at 2465 Monroe Boulevard continues to be a vapor intrusion risk, a limited indoor air and subslab soil gas sampling investigation was performed on August 19 and 20, 2024. Indoor air samples were obtained from both buildings with the use of Summa canisters. The sample locations were similar to the previous tests in 2023 and were in the lowest inhabitable space in the basement level of the north-center end of the building at 846 East 25th Street and in the basement laundry room of the Fontanelle Apartments. The subslab sampling at 846 East 25th Street was conducted below the concrete floor slab in the basement of the building, in the vicinity of the previous sampling event from July 2023. The analytical test results (Table 2 in Appendix A) indicate that the groundwater samples from MW-10, 12, 14, 15, 17, 24, 25, 29 to 32, 43 to 45 and 47 contained concentrations of PCE above the May 2024 EPA Maximum Contaminant Level (MCL) of 0.005 mg/L. The PCE concentrations were higher than the previous sampling event in nine wells and were lower in seven wells. TCE was detected above the laboratory reporting limits in MW-10, 12, 15, 17, 24 to 29, 31, 32, 43 to 45 and 47 with the concentrations exceeding the MCL of 0.005 mg/L in MW-10, 12, 17, 24, 25, 29, 31, 43 and 44. The only other VOCs detected above the laboratory reporting limits were cis-1,2-DCE in MW-25 and 31. These concentrations were below the respective MCL of 0.07 mg/L. The only VOCs detected above the EPA Residential and Commercial Regional Screening Levels in the subslab soil gas were bromodichloromethane, chloroform, PCE and TCE. The PCE and TCE concentrations were higher in one sample and lower in the second sample, when compared to the sample results from July 2023. The only VOCs detected above the EPA Residential Air Regional Screening Levels in the indoor air in the Fontanelle Apartments sample were benzene and 1,4-dichlorobenzene. No compounds were above the residential screening levels in the indoor air sample from 846 East 25th Street. PCE was detected in both samples below the residential screening levels. Ogden City Redevelopment Agency December 30, 2024 Page 4 1.1 Site and Surrounding Property Histories A house was built by 1906 at 856 East 25th Street on the current Forsey Cleaners parcel and was converted into the East Side Nursing Home by the mid 1950s. The house/nursing home was removed by 1961 and replaced with the existing laundry facility at 856 East 25th Street. Polk City Directories indicate the building was occupied by Norge Cleaning Village/Meyer's Norge Village from the 1960s to the late 1980s. In the late 1980s, the business name changed to Forsey's Norge self serve laundry and then Forsey's Laundry and Cleaning Village, 4-C's Wash Basin and Four Seasons Laundromat. We understand that dry cleaning has not been performed on site since about 1987. The property is listed on the RCRA Generator list for Meyers Cleaning Village at 856 25 Street. The facility was a small quantity generator of hazardous waste. The dry-th cleaning facility was closed in early 1987 when the dry cleaning began to be performed at another facility. The business was sold in January 1988. The Forsey laundry did not perform dry cleaning on site. The laundry closed in late 2021 and the building was vacated with the laundry equipment removed. The building was demolished in May 2022. The Holly-Rue Apartments (now McGregor Apartments) were built on the southwest corner of the block at 2478 Monroe Boulevard and 810 East 25 Street in 1926,th replacing a house at 2480 Monroe Boulevard. The houses at 826 and 832 East 25 th Street were built in 1910. A house at 838 East 25 Street was built in the earlyth 1930s and was removed in the mid 1960s for the access road to the south end of the shopping center. The house at 846 East 25 Street was built before 1906 and wasth converted to apartments in the mid 1950s. The garage north of the apartment building was built in the early 1960s. A house at 2454 Monroe Boulevard was removed by the late 1960s and replaced with a 7-Eleven convenience store in 1969. 7-Eleven vacated the store by 1982. From the mid 1980s to the mid 1990s, the building was occupied by Ho Wah Restaurant. Johnston Animal Hospital occupied the building from the mid 1990s to about 2012 when the building was occupied by Skyline Chiropractic and then Wake Up Sense. The building has been vacant for the past several years. Houses at 2466 and 2472 Monroe Boulevard were built in 1902 and 1917, respectively. The houses were removed in 2020 and 2021. Ogden City Redevelopment Agency December 30, 2024 Page 5 Adjacent to the east were duplexes at 868/870 and 872/874 East 25 Street thatth were built by the 1920s, replacing older houses at 870 and 874 East 25 Street. 868th East 25 Street was occupied by Ruby's Holiday Gift Shop/Ruby's Yard and Giftth House in the mid 1960s. The duplexes were removed in 1974 when an office at 868 East 25 Street was built. The office was occupied by an anesthesiologist, Coldwellth Diversified Financial Services, Check Rite, Collection Management Agency, DMT Painting, Associated Financial Systems, Warner Law Firm and Utah Legal Recovery Services until the building was removed in 2016. A brick house on the southeast corner at 886 25 Street was built by 1906 and later had an address of 2471 andth 2475 Quincy Avenue. The south end of the building is indicated as a store in the 1950 and 1963 Sanborn maps. The city directories indicate the business was a grocery (Al's Corner Grocery and Watkins Food Market) in the 1930s and 1940s and then Weldon's Barber Shop from the late 1950s to the mid 1970s when the house and shop were removed. In 1907, a sawmill was built to the northeast between 24th and 25th on Quincy Avenue and the Wheelwright Lumber was eventually moved from their previous location on Washington Boulevard to Quincy Avenue. The 1925 directory lists Wheelwright Construction Company at 2449 Quincy Avenue and Wheelwright Lumber Company at 2551 Quincy Avenue. The 1906 Sanborn map shows a wood-framed “kindling wood cutting” and “wood sawing” building at 2471 Quincy Avenue and several dwellings on the west center of the block. The Wheelwright Planing Mill is listed in the Polk directories at 2455 Quincy Avenue by 1939. 2445 Quincy Avenue is listed in 1941 as Wheelwright Construction Company and by Malan-Wheelwright Investment Company in 1944 and 1946 and a resident in 1951 and then not listed again. From 1954 to the early 1970s, Wheelwright Planing Mills and Lumber Company or Wheelwright Lumber is listed at 2451-2459 Quincy Avenue. In 1975, Tiger Lumber Sales is listed at 2451 Quincy Avenue while Wheelwright Lumber Company is listed at 2459 Quincy Avenue. Wheelwright Lumber vacated the building in the mid 2000s. When AGEC visited the property in 2015, the remaining Wheelwright Lumber building was a large vacant warehouse/office building in the east center of the property. The 1950, 1956 and 1963 Sanborn maps indicate the lumber buildings include a planing mill with a concrete floor, a cold storage shed and numerous lumber sheds. Paints were stored in the northeast corner of the main warehouse. The masonry block building was built in 1977. Most of the western sheds were built by the 1950s. A 2005 Phase 1 Assessment on the Wheelwright Lumber property indicated that the buildings for Wheelwright Lumber included a masonry block office, sales and Ogden City Redevelopment Agency December 30, 2024 Page 6 warehouse building with a partial basement and a wood-framed yard office. Out buildings on the west center included a masonry block door shop building, a paint shop and storage sheds. A lime/cement storage area, a wood-staining shop with stains on the concrete floor and a paint shop with overspray on the walls were observed at that time. Most of the western buildings were removed around 2011. The remaining lumber yard buildings were removed in 2016. Houses and a restaurant to the north of the subject property at 837, 853, 859 and 869 East 24 Street were removed by 1954 when a Safeway store was built at 847th East 24 Street. The Safeway store was removed and replaced with a shopping centerth at 851 24 Street in 1964. The building was occupied by a Safeway grocery andth Skaggs/Osco and then a Payless drug store. The Safeway section of the building was occupied with a Farmer’s Jack grocery store by 1987 and then an IGA Super Store by 1990. The grocery store vacated the west end of the shopping center in 1994 and this portion of the building remained vacant until the building was removed in 2019. Rite Aid occupied the east end of the building in the late 1990s. To the northwest were houses at 2422, 2426/2428 and 2442 Monroe Boulevard. The houses were removed by the early 1960s for the shopping center parking lot. Gold Seal Laundry Center Cleaners/Gold Seal Fabric Care Center was at 2440 Monroe Boulevard from the mid 1960s to the early 1990s, west of the shopping center. This building was vacant and boarded up by the mid-2000s and was removed around 2014. The house at 2450 Monroe Boulevard was built in 1938 and was occupied by Rocky Mountain Family Institute by 1979. Later businesses have included Farmers Insurance and Stanway Business Service in the 1980s and mid 1990s and Sierra Lawn Care in 2017. The property west of Monroe Boulevard was previously occupied by a house at 2465 South Monroe Boulevard by 1890. The house was expanded into a duplex by 1898. The existing Fontanelle apartment building was built in 1924, replacing the duplex. Ogden City Redevelopment Agency December 30, 2024 Page 7 2.0 ADDITIONAL SITE INVESTIGATION SAMPLING ACTIVITIES The goals and approach of the fourth Site Characterization Project were developed considering the considerable amount of previous site characterization work performed on the subject property. To help determine the current contaminant levels of the soil gas in the vicinity of the PCE plume, AGEC proposed to perform a limited soil gas investigation with nine locations spread across the site from the vicinity of the former dry-cleaner to Monroe Boulevard (Figures 1A to 1C). This sampling event was not intended to delineate the extent of the contamination, if present, in the soil gas, but to provide further site characterization data for future remedial actions. The sampling rationale for this project included the following: •The only VOCs detected above the EPA Residential and Commercial Regional Screening Levels in the subslab soil gas samples obtained in August 2024 were bromodichloromethane, chloroform, PCE and TCE. The PCE and TCE concentrations were higher in one sample and lower in the second sample, when compared to the sample results from July 2023. The only VOCs detected above the EPA Residential Air Regional Screening Levels in the indoor air in the Fontanelle Apartments sample were benzene and 1,4-dichlorobenzene. No VOC compounds were above the residential screening levels in the indoor air sample from 846 East 25th Street. PCE was detected in both samples below the residential screening levels. •Of the 32 monitoring wells previously installed west of the Q-25 property, 15 wells contained PCE at concentrations above the EPA MCL when last sampled in August 2024. The most recent PCE concentrations are indicated on Figures 2A to 2C and Table 2. •Previous subsurface investigations have indicated that soil gas with elevated concentrations of PCE, TCE, 1,3-butadiene, chloroform and naphthalene were present below and near the Forsey building. The concentrations of PCE were significantly higher in the two subslab samples than the exterior PRT samples. 2.1 Soil Gas Sampling Prior to the Geoprobe sampling, the proposed boring locations were Blue Staked to help determine the location of subsurface utilities and were adjusted if there were conflicts with subsurface or above-ground utilities. Ogden City Redevelopment Agency December 30, 2024 Page 8 A Utah licensed drilling contractor (AGEC) performed the soil gas sampling using a track-mounted Geoprobe rig. Soil gas samples were obtained from nine exterior borings (SG-1 to SG-9) with a Post-Run Tubing (PRT) system on December 16, 2024. The direct-push method was used to drive a disposable point to a depth of approximately 5 feet below grade. The sampling depth of 5 feet was used as soil gas samples collected at less than 5 feet below the ground surface may be subject to barometric pressure effects and may be prone to breakthrough of ambient air through the soil column. Once the appropriate depth was reached, the probe rod was retracted approximately 4 to 6 inches to release the expendable point and expose the bottom of the rod to the subsurface soil gas. Teflon tubing was attached to the PRT probe with an adapter with an O-ring with a threaded connection that engages an adapter with the ¼-inch inside diameter Teflon tubing. A syringe was then used to purge the tubing of dead air. The Teflon tubing was then connected to the sampling train attached to a Summa canister. A T-valve on the sampling train was then turned to allow the soil gas sample to be collected with a certified clean 1-liter Summa canister. The soil gas was collected via the Summa’s flow regulator (pre-calibrated to flow at 200 milliliters per minute) for 5 minutes. The initial and final vacuum readings were recorded for each canister. The initial and final vacuum pressures and all quality assurance/quality control (QA/QC) information labeled on the canister (canister tags, specifying cleaning and validation dates) were recorded and are included on the Chain-of-Custody (COC) forms. The canisters were labeled with the date, time, and sample name/location. COC forms provided by the analytical laboratory (Pace Analytical National) were filled out. The Summa canisters were subsequently submitted to the laboratory where they analyzed the soil gas samples for VOCs with test method TO-15. After the samples were obtained, the borings were filled with granular bentonite clay and the pavement repaired, if necessary. 2.2 Equipment Decontamination Procedures Disposable sampling equipment (nitrile gloves and Teflon tubing) were used where possible to reduce the amount of equipment that needs to be decontaminated between sample locations. The drilling probes in contact with the soil were washed with non- phosphate detergent and rinsed with de-ionized water. Gloves and other investigation derived waste were disposed off-site at a municipal sanitary landfill. Ogden City Redevelopment Agency December 30, 2024 Page 9 3.0 LABORATORY RESULTS During the sampling events, the nine soil gas samples were submitted to Pace Analytical National laboratory (Pace), a Utah State Certified Laboratory, for laboratory analyses to determine if significant concentrations of VOCs were present in the soil gas at the sampled locations. The analytical results from the subsurface soil gas samples were compared with the current (November 2024) EPA risk-based Residential and Commercial Vapor Intrusion Screening Level (VISL) calculator. The VISL Calculator is a technical resource, developed by the EPA that: (1) identifies chemicals considered to be typically vapor-forming under environmental conditions and known to pose a potential cancer risk or noncancer hazard through the inhalation pathway; (2) provides generally recommended screening-level concentrations for groundwater, near-source soil gas (exterior to buildings), sub-slab soil gas, and indoor air; and (3) facilitates calculation of site-specific screening levels and/or candidate risk-based cleanup levels based on user-defined target risk levels, exposure scenarios, and semi-site-specific or site-specific attenuation factors. An exceedance of a VISL does not necessarily identify a definitive, site-specific, indoor air quality issue or concern but may indicate that additional monitoring of site-specific conditions may be warranted. 3.1 Soil Gas Results Compounds detected above the laboratory reporting limits in at least one of the nine soil gas samples included acetone, benzene, 1,3-butadiene, carbon disulfide, c h l o r o f o r m , c h l o r o m e t h a n e , c y c l o h e x a n e , e t h a n o l , e t h y l b e n z e n e , trichlorofluoromethane, dichlorofluoromethane, heptane, n-hexane, methylene chloride, 2-butanone (MEK), 2-propanol (isopropanol), propene (propylene), tetrachloroethene (PCE), tetrahydrofuran, toluene, trichloroethylene (TCE), 1,2,4-trimethylbenzene, 2,2,4-trimethylpentane, vinyl acetate, m & p xylene and o-xylene. The soil vapor analytical results were compared to the November 2024 US EPA risk-based Residential and Commercial Target Subslab and Near-source Soil Gas Concentration Regional Screening Levels with THQ of 1.0, when available, and are summarized on Table 3B in Appendix A. The only VOCs detected above the EPA Residential Regional Screening Levels in at least one sample were benzene, 1,3-butadiene, PCE and TCE. According to the EPA, motor vehicle exhaust is a constant source of 1,3-butadiene and it is usually found in Ogden City Redevelopment Agency December 30, 2024 Page 10 ambient air at low levels in urban and suburban areas. We also understand that 1,3-butadiene is sometimes detected and associated with direct push sampling through a tight formation. It is believed that the friction from drilling heats up o-rings or other components and results in emissions of 1,3-butadiene. The chemical reportedly does not persist in the soil and therefore is typically not found during follow-up testing. Benzene is found in petroleum products such as gasoline. Others sources may include tobacco smoke, moth balls, moth flakes, deodorizers, air fresheners, automotive exhaust products, paint thinner, oil-based paints, aerosol/liquid insect pest products, mineral spirits, furniture polishes, rigid foam products, contact cement, model cement, tar board and plasticizers. PCE and TCE are common dry-cleaning solvents and degreasers. TCE is also a partial degradation daughter product of PCE. Significantly elevated concentrations of PCE above residential screening levels (360 µg/m ) were only detected in SG-5 (4,400 µg/m ) and SG-6 (7,880 µg/m ) during this333 sampling event. TCE was detected above residential screening levels (15.9 µg/m ) in3 SG-3 (16.0 µg/m ) and SG-5 (61.1 µg/m ).3 3 3.2 Quality Control/Assurance Data Validation Report The data validation conducted on the laboratory analytical data for the nine soil gas samples is considered acceptable for use in meeting the project objectives. One qualifier was flagged in the report. An E qualifier indicated the analyte concentration exceeds the upper limit of the calibration range of the instrument established by the initial calibration (ICAL). A review of the laboratory reports and associated qualifiers finds no significant problems or concerns and the data meets the project objectives. The samples were submitted to the analytical laboratory on December 17, 2024. All samples were maintained under chain of custody documentation throughout the sample collection, storage, transportation, and laboratory analysis process. Chain of custody forms were filled out for the soil gas samples. Copies of the Pace test reports and QC summary reports are included in Appendix B of this report. Ogden City Redevelopment Agency December 30, 2024 Page 11 4.0 CONCLUSIONS PCE was detected above residential Target Subslab and Near-source Soil Gas Concentration Regional Screening Levels in two of the nine sampled locations. TCE was detected above residential Target Subslab and Near-source Soil Gas Concentration Regional Screening Levels in two of the nine sampled locations. Concentrations of benzene and 1,3 butadiene detected above residential Target Subslab and Near-source Soil Gas Concentration Regional Screening Levels do not appear to be related to the solvent contaminant plume from the Forsey Cleaners site. Based on the soil gas, soil and groundwater samples obtained in the vicinity of the Forsey Cleaners & Laundry facility, a historical release of dry-cleaning solvent occurred. Concentrations of PCE were detected in the groundwater above the MCL in 14 of the 32 wells sampled during the most recent sampling event in 2024. The maximum PCE concentration detected to date is 1.37 mg/L in MW-12 in the alley between the buildings at 832 and 846 East 25 Street.th Concentrations of TCE above the MCL were detected in nine of the 32 most recently sampled wells with a maximum concentration of 0.0289 mg/L in MW-12. The depth of the plume is generally less than 25 feet below the ground surface as no samples in the 25 to 30 and 45 to 50-foot screened wells contained PCE above the MCL. VOCs detected above the residential VISL in the soil gas below the basement slab in the building at 846 East 25 Street were limited to PCE, TCE, chloroform andth bromodichloromethane. VOCs detected above the residential VISL for indoor air were limited to benzene and 1,4-dichlorobenzene in the sample from the Fontanelle Apartments. Neither contaminant appears to be related to the solvent contaminant plume from the Forsey Cleaners site. There are no water rights on the block with the Forsey Cleaners or on the adjacent block west of Monroe Boulevard. Based on the sampling to date, the PCE and TCE plumes are approximately 80-feet wide and extend at least 600 feet from the former dry cleaner building to the west-northwest, below the northern parking lots for the houses/apartments at 824, 832 and 846 East 25 Street andth across Monroe Boulevard. The plume appears to extend below the northern end of the adjacent apartment building at 846 East 25 Street and likely below the Fontanelle Apartmentth building at 2465 Monroe Boulevard. Ogden City Redevelopment Agency December 30, 2024 Page 12 5.0 LIMITATIONS This study has been prepared in accordance with generally accepted environmental practices in this area for the use of the client. The conclusions of the report are based on information obtained from field observations and testing of the soil gas obtained at the approximate locations indicated in the report and the data obtained from the field and laboratory testing. Applied Geotechnical Engineering Consultants, Inc. does not represent that the soil, soil gas and groundwater on the property contains no hazardous materials or other latent conditions beyond what was found for the compounds and locations tested. APPLIED GEOTECHNICAL ENGINEERING CONSULTANTS, INC. Prepared by Thomas R. Atkinson Reviewed by Douglas R. Hawkes, P.E., P.G. FIGURES APPENDIX A ANALYTICAL RESULT TABLES Soil and Groundwater Analytical Results Forsey's Laundry Sample Depth Sampling PID Acetone Benzene n-Butylbenzene 1,2-Dichlorobenzene 1,3-Dichlorobenzene 1,4-Dichlorobenzene MEK*1,1,1,2-Tetrachloroethane PCE**Toluene TCE***1,2,4-Trimethylbenzene 1,2,3-Trichlorobenzene 1,2,4-Trichlorobenzene Xylenes ID (feet)Date (ppm)(mg/kg)(mg/kg)(mg/kg)(mg/kg)(mg/kg)(mg/kg)(mg/kg)(mg/kg)(mg/kg)(mg/kg)(mg/kg)(mg/kg)(mg/kg)(mg/kg)(mg/kg) GP-1 0 to 2 1/20/2020 0.4 ND ND ND ND ND ND 0.0306 ND 0.0104 ND ND ND ND ND ND GP-1 7 1/20/2020 5.4 ND ND ND ND ND ND 0.031 ND 0.0108 ND ND ND ND ND ND GP-2 0 to 2 1/20/2020 0 ND ND ND ND ND ND 0.0275 ND 0.0135 ND ND ND ND ND ND GP-2 7 1/20/2020 1.1 ND ND ND ND ND ND 0.0324 ND ND ND ND ND ND ND ND MW-1 6 to 8 12/22/2020 0 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND MW-2 6½ to 8½12/22/2020 0.1 ND ND ND ND ND ND ND ND 0.00279 ND ND ND ND ND ND MW-3 6½ to 8½12/22/2020 0.1 ND ND ND ND ND ND ND ND 0.018 ND ND ND ND ND ND MW-4 6½ to 8½12/22/2020 0.2 ND ND ND ND ND ND ND ND 0.00385 ND ND ND ND ND ND MW-5 6½ to 8½12/22/2020 0.1 ND ND ND ND ND ND ND ND 0.00336 ND ND ND ND ND ND MW-6 6 to 7 1/20/2021 0.4 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND MW-6 10 to 11 1/20/2021 0.5 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND MW-7 6½ to 8½1/20/2021 0.6 ND ND ND ND ND ND ND ND 0.0221 ND ND ND ND ND ND MW-8 6½ to 8½1/20/2021 0.3 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND MW-9 6½ to 8½1/20/2021 0.3 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND MW-10 6½ to 8½1/20/2021 0.2 ND ND ND ND ND ND ND ND 0.0138 ND ND ND ND ND ND MW-11 7 to 8 2/8/2021 0.2 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND MW-12 9 to 10 2/8/2021 0.2 ND ND ND ND ND ND ND ND 0.239 ND 0.0028 ND ND ND ND MW-13 8 to 9 2/8/2021 0.1 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND MW-14 7 to 8 2/8/2021 0.2 ND ND ND ND ND ND ND ND 0.0318 ND ND ND ND ND ND MW-15 6 to 7 2/8/2021 0.2 ND ND ND ND ND ND ND ND 0.103 ND ND ND ND ND ND MW-16 6 to 7 3/4/2021 0.5 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND MW-17 6½ to 7½3/4/2021 0.3 ND ND ND ND ND ND ND ND 0.0202 ND ND ND ND ND ND MW-18 5 to 6 3/4/2021 0.2 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND MW-19 6 to 7 3/4/2021 0.4 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND MW-20 8 to 9 3/4/2021 0.2 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND MW-20 10 to 11 3/4/2021 0.3 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND MW-21 6 to 7 4/13/2021 0 ND ND ND ND ND ND ND ND 0.00654 ND ND ND ND ND ND MW-21 48 to 49 4/13/2021 0.3 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND MW-22 6 to 7 4/13/2021 0 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND MW-23 7 to 8 4/13/2021 0 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND MW-24 8 to 9 4/13/2021 0.1 ND ND ND ND ND ND ND ND 0.0615 ND ND ND ND ND ND MW-25 6 to 7 4/13/2021 0 ND ND ND ND ND ND ND ND 0.0376 ND ND ND ND ND ND MW-26 1 11/4/2022 0 ND ND ND ND ND ND ND ND 0.232 ND ND ND ND ND ND MW-26 3 11/4/2022 0 ND ND ND ND ND ND ND ND 0.242 ND ND ND ND ND ND MW-26 5 11/4/2022 0 ND ND ND ND ND ND ND ND 0.193 ND ND ND ND ND ND MW-26 7 11/4/2022 0 ND ND ND ND ND ND 0.157 ND 0.497 ND ND ND ND ND ND MW-27 1 11/4/2022 0 ND ND ND 0.00968 ND ND ND ND 3.44 ND ND ND ND ND ND MW-27 3 11/4/2022 0 ND ND ND ND ND ND ND ND 0.315 ND ND ND ND ND ND MW-27 5 11/4/2022 0 ND ND ND ND ND ND 0.155 ND 0.248 ND ND ND ND ND ND MW-27 7 11/4/2022 0 ND ND ND ND ND ND ND ND 0.544 ND ND ND ND ND ND MW-27 11 11/4/2022 0 ND ND ND ND ND ND ND ND 0.215 ND ND ND ND ND ND MW-28 1 11/4/2022 0 ND 0.0022 ND ND ND ND 0.18 ND 0.111 ND ND ND ND ND ND MW-28 3 11/4/2022 0 ND ND ND ND ND ND 0.16 ND 0.315 ND ND ND ND ND ND MW-28 5 11/4/2022 0 ND ND ND ND ND ND 0.153 ND 0.249 ND ND ND ND ND ND MW-28 7 11/4/2022 0 ND ND ND ND ND ND 0.182 ND 0.425 ND ND ND ND ND ND MW-28 9 11/4/2022 0 ND ND ND ND ND ND 0.212 ND 0.545 ND ND ND ND ND ND MW-29 7.5 to 8.5 11/2/2022 0 ND ND ND ND ND ND ND ND 0.236 ND 0.00205 ND ND ND ND MW-30 6 to 7 10/31/2022 0 ND ND ND ND ND ND ND ND 0.0152 ND ND ND ND ND ND MW-31 5.5 to 6.5 10/31/2022 0 ND ND ND ND ND ND ND ND 0.062 ND ND ND ND ND ND MW-32 6 to 7 10/31/2022 0 ND ND ND ND ND ND ND ND 0.00814 ND ND ND ND ND ND MW-33 1 11/4/2022 0 ND 0.0029 ND 0.0133 ND ND ND ND 11.2 0.0164 ND 0.00655 ND ND 0.0162 MW-33 3 11/4/2022 0 ND ND ND ND ND ND ND ND 0.661 ND ND ND ND ND ND MW-33 5 11/4/2022 0 ND ND ND ND ND ND ND ND 0.172 ND ND ND ND ND ND MW-33 7 11/4/2022 0 ND ND ND ND ND ND ND ND 0.277 ND ND ND ND ND ND MW-34 0 to 2 11/7/2022 0 ND ND ND ND ND ND ND ND 0.272 ND ND 0.00713 ND ND ND MW-34 2 to 4 11/7/2022 0 ND ND ND ND ND ND ND ND 0.274 ND ND ND ND ND ND MW-34 4 to 6 11/7/2022 0 ND ND ND ND ND ND ND ND 0.205 ND ND ND ND ND ND MW-34 6 to 8 11/7/2022 0 ND ND ND ND ND ND ND ND 0.284 ND ND ND ND ND ND MW-34 8 to 10 11/7/2022 0 ND ND ND ND ND ND ND ND 0.118 ND ND ND ND ND ND MW-35 8.5 to 9.5 11/2/2022 0 ND ND ND ND ND ND ND ND 0.131 ND ND ND ND ND ND MW-36 7.5 to 8.5 11/3/2022 0 ND ND ND ND ND ND ND ND 0.358 ND ND ND ND ND ND MW-37 7 to 8 11/2/2022 0 ND ND ND ND ND ND ND ND 0.215 ND 0.00268 ND ND ND ND MW-38 6 to 7 11/2/2022 0 ND ND ND ND ND ND ND ND 0.266 ND ND ND ND ND ND MW-39 6 to 7 10/31/2022 0 ND ND ND ND ND ND ND ND 0.0682 ND ND ND ND ND ND Table 1 - Soil Analytical Results Soil and Groundwater Analytical Results Forsey's Laundry Sample Depth Sampling PID Acetone Benzene n-Butylbenzene 1,2-Dichlorobenzene 1,3-Dichlorobenzene 1,4-Dichlorobenzene MEK*1,1,1,2-Tetrachloroethane PCE**Toluene TCE***1,2,4-Trimethylbenzene 1,2,3-Trichlorobenzene 1,2,4-Trichlorobenzene Xylenes ID (feet)Date (ppm)(mg/kg)(mg/kg)(mg/kg)(mg/kg)(mg/kg)(mg/kg)(mg/kg)(mg/kg)(mg/kg)(mg/kg)(mg/kg)(mg/kg)(mg/kg)(mg/kg)(mg/kg) MW-40 6.5 to 7.5 10/31/2022 0 ND ND ND ND ND ND ND ND 0.0473 ND ND ND ND ND ND MW-41 6.5 to 7.5 11/1/2022 0 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND MW-42 8 12/29/2022 0 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND MW-43 8 12/29/2022 0 ND ND ND ND ND ND ND ND 0.0641 ND 0.00168 ND ND ND ND MW-44 8 12/29/2022 0 ND ND ND ND ND ND ND ND 0.00526 ND ND ND ND ND ND MW-45 8 12/29/2022 0 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND MW-46 8 12/29/2022 0 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND MW-47 8 12/30/2022 0 ND ND ND ND ND ND ND ND 0.0107 ND ND ND ND ND ND MW-48 4 6/28/2023 12280 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND MW-48 7 6/28/2023 267 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND MW-49 7.5 6/28/2023 2 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND MW-50 8.5 6/28/2023 1 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND SC-1 1.5 7/13/2023 1299 ND ND ND ND ND ND ND ND 0.167 ND ND ND ND ND ND SC-2 1.5 7/13/2023 355 ND ND ND ND ND ND ND ND 1.02 ND ND ND ND ND ND SC-3 1.5 7/13/2023 36 ND ND 0.0800 0.288 ND ND ND ND 87.4 ND 0.343 ND ND ND ND SC-4 2 7/13/2023 35 ND ND ND ND ND ND ND ND 0.0997 ND ND ND ND ND ND SC-5 1.5 7/25/2023 5050 ND ND ND ND ND ND ND ND 1.49 ND ND ND ND ND ND SC-6 1 7/25/2023 1100 ND ND ND ND ND ND ND ND 0.268 ND ND ND ND ND ND SC-7 0.5 7/25/2023 340 ND ND ND 0.489 0.0217 0.134 ND 0.0119 58.4 ND 0.00953 ND ND ND ND CS-1 1 7/13/2023 211 ND ND ND ND ND ND ND ND 0.262 ND ND ND ND ND ND CS-2 1 7/13/2023 3600 ND ND ND ND ND ND ND ND 0.417 ND ND ND ND ND ND CS-3 1.7 7/13/2023 4.5 ND ND ND 0.0214 ND ND ND ND 5.09 ND 0.00162 ND ND ND ND CS-4 1 7/13/2023 16.8 ND ND ND 0.0151 ND ND ND ND 5.97 ND ND ND ND ND ND CS-5 2.5 7/14/2023 7 ND ND ND ND ND ND ND ND 0.742 ND ND ND ND ND ND CS-6 1 7/17/2023 922 ND ND ND ND ND ND ND ND 0.932 ND ND ND ND ND ND CS-7 3 7/17/2023 2 ND ND ND ND ND ND ND ND 0.112 ND ND ND ND ND ND CS-8 1 7/14/2023 24.5 ND ND ND ND ND ND ND ND 0.584 ND 0.00818 ND ND ND ND CS-9 7.5 7/13/2023 210 ND ND ND ND ND ND ND ND 0.113 ND ND ND ND ND ND CS-10 8 7/13/2023 2.8 ND ND ND ND ND ND ND ND 0.334 ND ND ND ND ND ND CS-11 8 7/13/2023 2.5 ND ND ND ND ND ND ND ND 0.541 ND ND ND ND ND ND CS-12 7.5 7/13/2023 35 ND ND ND ND ND ND ND ND 0.286 ND ND ND ND ND ND CS-13 7.5 7/17/2023 4700 ND ND ND ND ND ND ND ND 0.101 ND ND ND ND ND ND CS-14 7.5 7/17/2023 228 ND ND ND ND ND ND ND ND 0.131 ND ND ND ND ND ND SS-1/CS-14 7.5 7/17/2023 NA 0.11 ND ND ND ND ND ND ND 0.05 ND ND ND ND ND ND CS-15 7.5 7/17/2023 57 ND ND ND ND ND ND ND ND 0.0847 ND ND ND ND ND ND CS-16 8 7/14/2023 997 ND ND ND ND ND ND ND ND 0.0604 ND ND ND ND ND ND CS-17 7.5 7/17/2023 12.1 ND ND ND ND ND ND ND ND 0.342 ND ND ND ND ND ND SS-2/CS-17 7.5 7/17/2023 NA 0.09 ND ND ND ND ND ND ND 0.10 ND ND ND 0.003 0.004 ND CS-18 7.5 7/14/2023 2.2 ND ND ND ND ND ND ND ND 0.207 ND ND ND ND ND ND CS-19 1.75 7/14/2023 3470 ND ND ND ND ND ND ND ND 0.553 ND ND ND ND ND ND CS-20 7.5 7/17/2023 2360 ND ND ND ND ND ND ND ND 0.0437 ND ND ND ND ND ND CS-21 7.5 7/26/2023 950 ND ND ND ND ND ND ND ND 0.0808 ND ND ND ND ND ND CS-22 3.5 7/26/2023 28 ND ND ND ND ND ND ND ND 0.588 ND ND ND ND ND ND CS-23 8 7/27/2023 2700 ND ND ND ND ND ND ND ND 0.156 ND ND ND ND ND ND CS-24 8 7/27/2023 2 ND ND ND ND ND ND ND ND 0.579 ND ND ND ND ND ND CS-25 6 7/27/2023 25 ND ND ND ND ND ND ND ND 0.0832 ND ND ND ND ND ND CS-26 6 7/27/2023 1.4 ND ND ND ND ND ND ND ND 0.282 ND ND ND ND ND ND CS-27 1.5 7/27/2023 11 ND ND ND ND ND ND ND ND 2.27 ND ND ND ND ND ND CS-28 3 8/2/2023 249 ND ND ND ND ND ND ND ND 0.175 ND ND ND ND ND ND CS-29 3 8/2/2023 76 ND ND ND ND ND ND ND ND 0.104 ND ND ND ND ND ND CS-30 2.5 8/2/2023 52 ND ND ND ND ND ND ND ND 0.185 ND ND ND ND ND ND CS-31 6 8/2/2023 34 ND ND ND ND ND ND ND ND 0.463 ND ND ND ND ND ND 3.7 0.00023 3.2 0.3 NS 0.00046 1.2 0.00022 0.0051 0.76 0.00018 0.081 0.021 0.0034 0.19 70,000 1.2 3,900 1,800 NS 2.6 2,700 2 24 4,900 0.94 300 63 24 580 1,100,000 5.1 58,000 9,300 NS 11 19,000 8.8 100 47,000 6 1,800 930 110 2,500 Italics = Above EPA Groundwater Protection SSL Bold = Above Residential SL with THQ of 1.0 Shaded = Soil removed during subsequent excavation work ND = Non Detect NA = not analyzed NS = No EPA standard * MEK identified as 2-Butadone in lab results ** PCE identified as tetrachloroethene in lab results *** TCE identified as trichloroethene in lab results May 2023 EPA Residential SL May 2023 EPA Industrial SL May 2023 Protection of Groundwater SSLs Sample Depth Sampling PCE TCE cis-1,2-DCE 1,2-Dichlorobenzene ID (feet)Date (mg/L)(mg/L)(mg/L)(mg/L) GP-1 14 1/20/2020 0.0422 ND ND ND GP-2 14 1/20/2020 0.00661 ND ND ND MW-1 13-14 12/28/2020 ND ND ND ND MW-1-Dup 13-14 12/28/2020 ND ND ND ND MW-1 13-14 10/12/2022 ND ND ND ND MW-2 13-14 12/28/2020 0.0584 ND ND ND MW-2 13-14 10/12/2022 0.0486 ND ND ND MW-2-Dup 13-14 10/12/2022 0.0476 ND ND ND MW-3 13-14 12/28/2020 0.739 0.00624 ND ND MW-3 13-14 10/12/2022 0.787 0.00413 ND ND MW-4 13-14 12/28/2020 0.00585 ND ND ND MW-4 13-14 10/12/2022 0.0298 ND ND ND MW-5 13-14 12/28/2020 ND ND ND ND MW-5 13-14 10/12/2022 0.0287 ND ND ND MW-6 12-13 1/20/2021 0.0224 ND ND ND MW-6-Dup 12-13 1/20/2021 0.0213 ND ND ND MW-6 12-13 10/12/2022 ND ND ND ND MW-7 12-13 1/20/2021 0.204 ND ND ND MW-7 12-13 10/12/2022 0.229 0.00237 ND ND MW-8 11-12 1/20/2021 0.0372 ND ND ND MW-8 11-12 10/12/2022 0.00596 ND ND ND MW-9 12-13 1/20/2021 ND ND ND ND MW-9 12-13 10/12/2022 ND ND ND ND MW-10 12-13 1/20/2021 0.226 0.0127 ND ND MW-10 12-13 10/12/2022 0.259 0.00834 ND ND MW-10 13 8/19/2024 0.395 0.0155 ND ND MW-11 12-13 2/10/2021 0.00729 ND ND ND MW-11 12-13 10/12/2022 0.00593 ND ND ND MW-12 12-13 2/10/2021 0.833 0.026 ND ND MW-12-Dup 12-13 2/10/2021 0.771 0.0258 ND ND MW-12 12-13 10/13/2022 0.789 0.0223 ND ND MW-12-Dup 12-13 10/13/2022 0.967 0.0272 ND ND MW-12 13 8/19/2024 1.37 0.0289 ND ND MW-13 12-13 2/10/2021 0.002 ND ND ND MW-13 12-13 10/12/2022 0.0018 ND ND ND MW-13 13 8/19/2024 0.00283 ND ND ND MW-14 12-13 2/10/2021 0.0326 ND ND ND MW-14 12-13 10/12/2022 0.0175 0.00102 ND ND MW-14 13 8/19/2024 0.0204 ND ND ND MW-14A-Dup 13 8/19/2024 0.0313 ND ND ND Table 2 - Groundwater Analytical Results Sample Depth Sampling PCE TCE cis-1,2-DCE 1,2-Dichlorobenzene ID (feet)Date (mg/L)(mg/L)(mg/L)(mg/L) MW-15 12-13 2/10/2021 0.135 0.00619 ND ND MW-15 12-13 10/13/2022 0.183 0.00414 ND ND MW-15 13 8/19/2024 0.269 0.0105 ND ND MW-16 12-13 3/10/2021 ND ND ND ND MW-16 12-13 10/13/2022 ND ND ND ND MW-16 13 8/19/2024 ND ND ND ND MW-17 12-13 3/10/2021 0.388 0.0102 ND ND MW-17-Dup 12-13 3/10/2021 0.417 0.0114 ND ND MW-17 12-13 10/13/2022 0.645 0.0229 0.00127 ND MW-17 13 8/19/2024 0.390 0.00913 ND ND MW-18 12-13 3/10/2021 ND ND ND ND MW-18 12-13 10/13/2022 ND ND ND ND MW-18 13 8/19/2024 ND ND ND ND MW-19 12-13 3/10/2021 ND ND ND ND MW-19 12-13 10/13/2022 ND ND ND ND MW-19 13 8/19/2024 ND ND ND ND MW-20 12-13 3/10/2021 ND ND ND ND MW-20 12-13 10/13/2022 ND ND ND ND MW-20 13 8/19/2024 ND ND ND ND MW-21 15 4/16/2021 0.00869 ND ND ND MW-21-Dup 15 4/16/2021 0.00697 ND ND ND MW-21 30 4/16/2021 0.0152 ND ND ND MW-21 48 4/16/2021 0.0232 ND ND ND MW-21 15 10/12/2022 0.325 0.00177 ND ND MW-22 12-13 4/16/2021 ND ND ND ND MW-22 12-13 10/12/2022 ND ND ND ND MW-22 13 8/19/2024 ND ND ND ND MW-23 12-13 4/16/2021 ND ND ND ND MW-23 12-13 10/13/2022 ND ND ND ND MW-23 13 8/19/2024 ND ND ND ND MW-24 13 4/16/2021 0.463 0.0136 ND ND MW-24 13 10/13/2022 0.749 0.0164 0.00177 ND MW-24 13 8/20/2024 0.526 0.0172 ND ND MW-25 12-13 4/16/2021 0.209 0.00829 ND ND MW-25 12-13 10/13/2022 0.279 0.00704 0.00135 ND MW-25 13 8/20/2024 0.228 0.00902 0.00107 ND MW-26 14 11/11/2022 0.990 0.00144 ND 0.00100 MW-27 14 11/11/2022 0.487 0.00142 ND ND MW-28 14 11/11/2022 0.699 0.00121 ND ND MW-28-dup 14 11/11/2022 0.728 0.00113 ND ND MW-29 14 11/11/2022 0.263 0.00495 ND ND MW-29 14 8/19/2024 0.428 0.0127 ND ND MW-30 13 11/10/2022 0.0122 ND ND ND MW-30 15 8/20/2024 0.0307 ND ND ND Sample Depth Sampling PCE TCE cis-1,2-DCE 1,2-Dichlorobenzene ID (feet)Date (mg/L)(mg/L)(mg/L)(mg/L) MW-31 15 11/9/2022 0.412 0.0113 ND ND MW-31 15 8/20/2024 0.327 0.0125 0.00123 ND MW-31A-dup 15 8/20/2024 0.304 0.00951 ND ND MW-32 14 11/10/2022 0.0767 0.00102 ND ND MW-32 14 8/20/2024 0.141 0.00231 ND ND MW-33 29 11/11/2022 0.00144 ND ND ND MW-33 29 7/6/2023 ND ND ND ND MW-34 48 11/15/2022 ND ND ND ND MW-34 49 7/6/2023 ND ND ND ND MW-34-dup 49 7/6/2023 ND ND ND ND MW-35 29 11/11/2022 ND ND ND ND MW-35 30 7/6/2023 ND ND ND ND MW-36 46 11/11/2022 0.00489 ND ND ND MW-36 47 7/6/2023 ND ND ND ND MW-37 29 11/14/2022 ND ND ND ND MW-37 30 7/5/2023 ND ND ND ND MW-37 30 8/19/2024 ND ND ND ND MW-38 48 11/15/2022 ND ND ND ND MW-38 48 7/6/2023 ND ND ND ND MW-38 48 8/20/2024 ND ND ND ND MW-39A 30 11/10/2022 ND ND 0.0011 ND MW-39A 30 7/5/2023 ND ND ND ND MW-39A 31 8/20/2024 ND ND ND ND MW-40A 48 11/10/2022 ND ND ND ND MW-40A 48 7/5/2023 ND ND ND ND MW-40A 48 8/20/2024 ND ND ND ND MW-41 13 11/9/2022 ND ND ND ND MW-41 14 8/20/2024 ND ND ND ND MW-42 14 1/13/2023 0.0321 ND ND ND MW-42 14 8/20/2024 0.00138 ND ND ND MW-43 14 1/13/2023 0.464 0.12 ND ND MW-43-dup 14 1/13/2023 0.464 0.0122 ND ND MW-43 14 8/20/2024 0.237 0.00593 ND ND MW-44 14 1/9/2023 0.00832 0.00113 ND ND MW-44 14 8/20/2024 0.0298 0.00662 ND ND MW-45 14 1/9/2023 0.00286 ND ND ND MW-45 14 8/20/2024 0.0105 0.00395 ND ND MW-46 14 1/13/2023 ND ND ND ND MW-46 14 8/20/2024 ND ND ND ND MW-47 14 1/9/2023 0.129 0.00218 ND ND MW-47 14 8/20/2024 0.125 0.00150 ND ND MW-48 14 7/5/2023 ND ND ND ND MW-48-dup 14 7/5/2023 ND ND ND ND MW-48 14 8/20/2024 ND ND ND ND Sample Depth Sampling PCE TCE cis-1,2-DCE 1,2-Dichlorobenzene ID (feet)Date (mg/L)(mg/L)(mg/L)(mg/L) MW-49 14 7/5/2023 ND ND ND ND MW-49 14 8/20/2024 ND ND ND ND MW-50 14 7/5/2023 ND ND ND ND MW-50 14 8/20/2024 ND ND ND ND Decon #2 NA 11/4/2022 ND ND ND ND Decon #3 NA 12/29/2022 ND ND ND ND Trip Blank NA 12/28/2020 ND ND ND ND Trip Blank NA 1/20/2021 ND ND ND ND Trip Blank NA 2/10/2021 ND ND ND ND Trip Blank NA 3/10/2021 ND ND ND ND Trip Blank NA 4/16/2021 ND ND ND ND Trip Blank NA 10/13/2022 ND ND ND ND Trip Blank NA 10/31/2022 ND ND ND ND Trip Blank NA 11/7/2022 ND ND ND ND Trip Blank NA 12/29/2022 ND ND ND ND Trip Blank NA 1/13/2023 ND ND ND ND Trip Blank NA 7/6/2023 ND ND ND ND Trip Blank NA 7/17/2023 ND ND ND ND Trip Blank NA 8/2/2023 ND ND ND ND Trip Blank NA 8/19/2024 ND ND ND ND May 2024 EPA MCL 0.005 0.005 0.07 0.600 ND = Non Detect NA = Not Applicable Above MCL Depth = Tubing intake depth Table 3A - Soil Gas Analytical Results Forsey Cleaners Chemical CAS Number Toxicity Basis PRT-1 (µg/m3) PRT-2 (µg/m3) VP-1 (µg/m3) VP-2 (µg/m3) VP-3 (µg/m3) VP-3 8-19 (µg/m3) VP-4 (µg/m3) VP-4 8-19 (µg/m3) Residential Target Sub-Slab and Near-source Soil Gas Concentration (TCR=1E-06 or THQ=1.0) Csg,Target (µg/m3) Commercial Target Sub-Slab and Near-source Soil Gas Concentration (TCR=1E-06 or THQ=1.0) Csg,Target (µg/m3) Acetone 67-64-1 NC 122 31.1 81.7 96.7 27.1 129 29.7 89.3 NA NA Benzene 71-43-2 CA 3.05 7.19 1.09 1.59 ND 4.15 0.846 5.46 12 52.4 Bromodichloromethane 75-27-4 CA ND ND ND ND ND 3.88 ND ND 2.53 11 Butadiene, 1,3-106-99-0 CA ND 26.8 ND ND ND ND ND ND 3.12 13.6 Carbon Disulfide 75-15-0 NC ND 7.66 ND ND ND 1.71 ND 1.62 24,300 102,000 Carbon Tetrachloride 56-23-5 CA 2.03 ND ND ND ND ND ND ND 15.6 68.1 Chloroform 67-66-3 CA ND ND ND 17 ND 87.1 ND 25.1 4.07 17.8 Chloromethane 74-87-3 NC 1.31 0.498 0.764 ND 1.17 0.733 0.777 0.574 3,130 13,100 Cyclohexane 110-82-7 NC ND ND ND 0.813 ND 0.871 ND 2.34 209,000 876,000 Dichloroethene, 1,1-75-35-4 NC ND ND 2.37 ND ND ND ND ND 6,950 29,200 Dichloroethene, cis 1,2-156-59-2 NC ND ND 19.6 9.67 ND ND ND ND 1,390 5,840 Dioxane, 1,4-123-91-1 CA ND ND ND 6.56 ND ND ND ND 18.7 81.8 Ethanol 64-17-5 50.5 7.52 30.4 27.5 264 73.2 98.6 53.0 NA NA Ethylbenzene 100-41-4 CA 1.08 1.21 1.68 ND ND 1.00 0.954 1.11 37.4 164 Ethyltoluene, 4-622-96-8 ND ND 2.91 ND 2.71 ND 2.65 ND NA NA Trichlorofluoromethane 75-69-4 1.25 ND 2.24 1.31 2.82 3.04 2.57 2.71 NA NA Dichlorodifluoromethane 75-71-8 NC ND 1.94 2.94 2.32 3.11 2.37 3.08 2.46 3,480 14,600 Heptane 142-82-5 NC 1.43 1.43 0.83 2.42 ND 3.33 2.25 7.36 13,900 58,400 Hexane, N-110-54-3 NC 2.92 4.05 1.23 6.49 ND 4.05 ND 9.48 24,300 102,000 Isopropylbenzene (cumene)98-82-8 NC ND ND 2.18 ND ND ND ND ND 13,900 58,400 Methylene Chloride 75-09-2 CA 2.57 0.847 ND 1.24 3.01 1.29 5.94 0.906 3,380 40,900 2-Butanone (MEK)78-93-3 NC 7.93 11.2 12.3 5.07 3.72 18.8 3.77 10.5 174,000 730,000 4-Methyl-2-pentanone (MIBK)108-10-1 NC ND ND ND ND 14.7 ND ND ND 104,000 438,000 Naphthalene 91-20-3 CA ND ND 5.97 ND ND ND ND ND 2.75 12 2-Propanol (Isopropanol)67-63-0 NC 5.92 ND 7.67 15 25.8 13.2 22.6 10.9 6,950 29,200 Propene (Propylene)115-07-1 NC ND 164 3.99 ND ND 5.03 ND 7.75 104,000 438,000 Styrene 100-42-5 NC ND 1.66 ND ND 0.987 ND 3.53 ND 34,800 146,000 Tetrachloroethylene 127-18-4 CA 25.4 468 37,100 74,000 35,000 52,300 34,200 6,390 360 1,570 Tetrahydrofuran 109-99-9 NC ND ND ND ND ND 1.08 ND ND 69,500 292,000 Toluene 108-88-3 NC 7.84 6.93 3.06 2.5 4.78 5.20 15.9 7.12 174,000 730,000 Trichloroethylene 79-01-6 NC ND ND 399 427 139 194 108 42.3 15.9 99.7 Trimethylbenzene, 1,2,4-95-63-6 NC 2.05 1.03 4.49 ND 3.09 3.30 3.14 3.00 2,090 8,760 Trimethylpentane, 2,2,4-540-84-1 5.05 ND ND ND ND ND ND ND NA NA Xylene, M & P-1330-20-7 NC 4.94 2.63 4.22 ND 2.79 3.31 3.27 3.96 3,480 14,600 Xylene, o-95-47-6 NC 1.78 1.09 1.22 ND 1.16 1.35 1.33 1.54 3,480 14,600 ND - Non Detect Bold Italics = Above Commercial Target Subslab RSL NA = No EPA Target Available Bold = Above Residential Target Subslab RSL Table 3B - Soil Gas Analytical Results Forsey Cleaners Chemical CAS Number Toxicity Basis SG-1 (µg/m3) SG-2 (µg/m3) SG-3 (µg/m3) SG-4 (µg/m3) SG-5 (µg/m3) SG-6 (µg/m3) SG-7 (µg/m3) SG-8 (µg/m3) SG-9 (µg/m3) Residential Target Sub-Slab and Near-source Soil Gas Concentration (TCR=1E-06 or THQ=1.0) Csg,Target (µg/m3) Commercial Target Sub-Slab and Near-source Soil Gas Concentration (TCR=1E-06 or THQ=1.0) Csg,Target (µg/m3) Acetone 67-64-1 NC 98.9 130 28.3 307 53.7 16.4 8.60 261 179 NA NA Benzene 71-43-2 CA 2.15 1.04 8.34 5.46 3.61 15.5 ND 3.06 1.73 12 52.4 Butadiene, 1,3-106-99-0 CA 5.80 ND 14.0 10.9 10.1 4.54 ND ND ND 3.12 13.6 Carbon Disulfide 75-15-0 NC 1.95 2.49 ND 1.96 6.35 1.36 ND ND ND 24,300 102,000 Chloroform 67-66-3 CA ND ND ND ND 1.24 ND ND ND ND 4.07 17.8 Chloromethane 74-87-3 NC 1.41 1.37 0.459 1.52 0.688 ND 1.30 1.58 2.48 3,130 13,100 Cyclohexane 110-82-7 NC ND ND ND ND 0.916 1.73 ND ND ND 209,000 876,000 Ethanol 64-17-5 ND 6.64 ND 11.1 9.03 ND 22.2 10.5 55.6 NA NA Ethylbenzene 100-41-4 CA ND ND 0.958 ND ND 0.962 ND 1.83 ND 37.4 164 Trichlorofluoromethane 75-69-4 1.34 1.61 ND 1.37 1.20 ND 1.37 1.39 1.37 NA NA Dichlorodifluoromethane 75-71-8 NC 2.63 1.99 ND 2.60 2.89 ND 2.69 2.87 2.63 3,480 14,600 Heptane 142-82-5 NC 1.68 1.29 1.49 3.26 2.99 1.22 ND 2.41 1.67 13,900 58,400 Hexane, N-110-54-3 NC 6.13 4.23 2.48 3.77 7.19 2.71 ND 2.37 8.21 24,300 102,000 Methylene Chloride 75-09-2 CA 1.42 1.49 1.23 2.59 3.42 1.56 2.37 3.12 15.6 3,380 40,900 2-Butanone (MEK)78-93-3 NC 17.5 22.2 6.40 56.6 12.6 4.31 ND 39.2 22.1 174,000 730,000 2-Propanol (Isopropanol)67-63-0 NC 6.54 ND 23.0 ND ND 8.11 3.64 11.8 6,950 29,200 Propene (Propylene)115-07-1 NC 31.2 ND 83.5 54.4 53.9 22.7 ND 11.6 7.92 104,000 438,000 Tetrachloroethylene 127-18-4 CA 14.7 187 170 53.7 4,400 7,880 42.6 80.8 3.49 360 1,570 Tetrahydrofuran 109-99-9 NC 1.11 0.908 ND 1.68 ND ND ND 1.44 1.11 69,500 292,000 Toluene 108-88-3 NC 1.89 ND 5.84 4.67 4.48 26.7 ND 9.19 3.99 174,000 730,000 Trichloroethylene 79-01-6 NC ND ND 16.0 ND 61.1 4.81 ND ND ND 15.9 99.7 Trimethylbenzene, 1,2,4-95-63-6 NC ND 1.02 ND ND 1.19 ND ND 3.01 ND 2,090 8,760 Trimethylpentane, 2,2,4-540-84-1 ND ND ND ND ND 1.02 ND 1.47 3.25 NA NA Vinyl acetate 108-05-4 NC 3.08 3.77 ND 5.49 ND ND ND 9.93 4.75 6,950 29,200 Xylene, M & P-179601-23-1 NC ND ND 1.77 2.12 2.58 5.94 ND 6.33 ND 3,480 14,600 Xylene, o-95-47-6 NC ND ND ND 1.51 1.14 1.67 ND 3.37 ND 3,480 14,600 ND - Non Detect Bold Italics = Above Commercial Target Subslab RSL NA = No EPA Target Available Bold = Above Residential Target Subslab RSL Table 4 - Indoor Air Analytical Results Forsey Cleaners VCP Investigation Chemical CAS Number Toxicity Basis 2475 S Monroe IA-1 (µg/m3) Fontanelle 2465 S Monroe (µg/m3) Fontanelle 2465 S Monroe IA- 2 8-19 (µg/m3) 846 25th Street IA-3 (µg/m3) 846 25th Street IA-3 8-19 (µg/m3) Residential Indoor Air RSL (TCR=1E-06 or THQ=1.0) Csg,Target (µg/m3) Commercial Indoor Air RSL (TCR=1E-06 or THQ=1.0) Csg,Target (µg/m3) Acetone 67-64-1 NC 342 5.94 61.3 20.8 28.3 NA NA Benzene 71-43-2 CA 4.63 1.47 0.648 ND ND 0.36 1.57 Chloromethane 74-87-3 NC 1.29 1.15 1.16 1.84 1.36 93.9 394 Cyclohexane 110-82-7 NC 2.14 ND ND ND ND 6,260 26,300 1,4-Dichlorobenzene 106-46-7 CA ND ND 1.23 ND ND 0.26 1.11 1,4-Dioxane 123-91-1 CA 1.42 ND ND ND ND 0.56 2.45 Ethanol 64-17-5 18.3 12.9 61.7 19.4 14.8 NA NA Ethylbenzene 100-41-4 CA 5.85 ND ND ND ND 1.12 4.91 Ethyltoluene, 4-622-96-8 6.87 ND ND ND ND NA NA Trichlorofluoromethane 75-69-4 1.33 1.25 1.31 1.69 1.38 NA NA Dichlorodifluoromethane 75-71-8 NC 1.88 2.29 2.18 2.67 2.42 104 438 Heptane 142-82-5 NC 6.38 ND 0.941 ND 1.79 417 1,750 Hexane, N-110-54-3 NC 10.7 ND ND ND ND 730 3,070 Methylene Chloride 75-09-2 CA ND ND 1.49 2.03 ND 101 1,230 2-Butanone (MEK)78-93-3 NC 15.7 ND ND 4.57 ND 5,210 21,900 2-Propanol (Isopropanol)67-63-0 NC 6.15 ND 75.5 3.69 4.35 209 876 Tetrachloroethylene 127-18-4 CA ND ND 2.37 13.4 5.85 10.8 47.2 Tetrahydrofuran 109-99-9 NC 28.9 ND ND ND 0.722 2,090 8,760 Toluene 108-88-3 NC 36.5 3.52 ND 4.07 3.13 5,210 21,900 Trichloroethylene 79-01-6 NC ND ND ND ND ND 0.478 2.99 Trimethylbenzene, 1,2,4-95-63-6 NC 8.05 ND ND ND ND 62.6 263 Trimethylbenzene, 1,3,5-108-67-8 NC 2.24 ND ND ND ND 62.6 263 Trimethylpentane, 2,2,4-540-84-1 24.6 0.948 1.05 ND ND NA NA Xylene, M & P-1330-20-7 NC 23.5 2.21 ND ND ND 104 438 Xylene, o-95-47-6 NC 8.02 ND ND ND ND 104 438 ND - Non Detect Bold Italics = Above Commercial Indoor Air RSL NA = No EPA Target Available Bold - Above Residential Indoor Air RSL Table 5 - PFAS in Groundwater Forsey Cleaners VCP Investigation Sample Depth Sampling PFBS PFHxS PFHxA PFOS PFOA PFPeA ID (feet)Date ng/L ng/L ng/L ng/L ng/L ng/L MW-26 14 11/11/2022 4.89 4.99 5.03 12.5 6.14 5.9 MW-27 14 11/11/2022 6.44 4.58 4.49 4.99 ND 4.41 MW-28 14 11/11/2022 7.05 5.07 4.77 5.7 ND 4.78 MW-28dup 14 11/11/2022 6.74 4.57 4.56 5.23 ND 4.39 MW-33 29 11/11/2022 ND ND ND ND ND ND MW-34 48 11/15/2022 ND ND ND ND ND ND Decon #2 NA 11/4/2022 ND ND ND ND ND ND 6,000 390 9,900 2 0.0027 NS NS 10 NS 4 4 NS NS = No EPA RSL ND = Non Detect May 2024 EPA Tapwater RSL May 2024 EPA MCL Monitor Well ID Drilling Method Total Depth Date Installed Diameter/Well Material Top of Casing Elevation Screened Interval Sand Pack Depth to Water BTOC GW Elevation RSB Depth to Water BTOC GW Elevation RSB Depth to Water BTOC GW Elevation RSB (BTOC)(RSB)(ft)(ft)(ft)(ft)(ft)(ft)(ft)(ft) MW-1 Direct Push 15.33 12/22/2020 1 ½- inch/PVC 99.61 5 to 15 3 to 15 7.40 92.21 7.82 91.79 NM NA MW-2 Direct Push 15.33 12/22/2020 1 ½- inch/PVC 99.74 5 to 15 3 to 15 8.09 91.65 7.91 91.83 NM NA MW-3 Direct Push 15.33 12/22/2020 1 ½- inch/PVC 99.42 5 to 15 3 to 15 8.20 91.22 8.41 91.01 NM NA MW-4 Direct Push 14.75 12/22/2020 1 ½- inch/PVC 99.25 5 to 15 3 to 15 7.83 91.42 8.22 91.03 NM NA MW-5 Direct Push 15.33 12/22/2020 1 ½- inch/PVC 99.14 5 to 15 3 to 15 7.78 91.36 7.77 91.37 NM NA MW-6 Direct Push 13.33 1/20/2021 1 ½- inch/PVC 99.44 3 to 13 3 to 13 8.31 91.13 8.53 90.91 NM NA MW-7 Direct Push 13.17 1/20/2021 1 ½- inch/PVC 98.96 3 to 13 3 to 13 8.17 90.79 8.30 90.66 NM NA MW-8 Direct Push 13.01 1/20/2021 1 ½- inch/PVC 99.18 3 to 13 3 to 13 8.21 90.97 8.30 90.88 NM NA MW-9 Direct Push 13.33 1/20/2021 1 ½- inch/PVC 99.78 3 to 13 3 to 15 8.65 91.13 8.90 90.88 NM NA MW-10 Direct Push 13.62 1/20/2021 1 ½- inch/PVC 96.52 3 to 13 3 to 13 6.31 90.21 6.55 89.97 6.76 89.76 MW-11 Direct Push 13.33 2/8/2021 1 ½- inch/PVC 98.97 3 to 13 3 to 13 7.95 91.02 8.14 90.83 NM NA MW-12 Direct Push 13.23 2/8/2021 1 ½- inch/PVC 95.11 4 to 13 3 to 13 6.40 88.71 6.56 88.55 6.59 88.52 MW-13 Direct Push 13.42 2/8/2021 1 ½- inch/PVC 96.77 3 to 13 3 to 13 7.60 89.17 7.90 88.87 7.73 89.04 MW-14 Direct Push 13.88 2/8/2021 1 ½- inch/PVC 96.74 4 to 14 3 to 14 7.61 89.13 7.85 88.89 7.80 88.94 MW-15 Direct Push 13.58 2/8/2021 1 ½- inch/PVC 95.66 4 to 14 3 to 14 7.11 88.55 7.30 88.36 7.29 88.37 MW-16 Direct Push 13.43 3/4/2021 1 ½- inch/PVC 95.34 3 to 13 3 to 13 6.03 89.31 6.23 89.11 6.25 89.09 MW-17 Direct Push 13.33 3/4/2021 1 ½- inch/PVC 95.44 3 to 13 3 to 13 7.11 88.33 7.23 88.21 7.30 88.14 MW-18 Direct Push 13.43 3/4/2021 1 ½- inch/PVC 94.48 3 to 13 3 to 13 5.91 88.57 6.06 88.42 6.12 88.36 MW-19 Direct Push 13.54 3/4/2021 1 ½- inch/PVC 94.22 4 to 14 3 to 14 5.85 88.37 6.02 88.20 6.10 88.12 MW-20 Direct Push 13.54 3/4/2021 1 ½- inch/PVC 96.58 4 to 14 3 to 14 9.09 87.49 9.24 87.34 9.38 87.20 MW-21 Direct Push 49.05 4/13/2021 1 ½- inch/PVC 99.75 9 to 49 3 to 49 7.14 92.61 8.54 91.21 NM NA MW-22 Direct Push 13.83 4/13/2021 1 ½- inch/PVC 96.97 4 to 14 3 to 14 7.10 89.87 7.29 89.68 7.21 89.76 MW-23 Direct Push 13.79 4/13/2021 1 ½- inch/PVC 96.31 4 to 14 3 to 14 7.71 88.60 7.84 88.47 7.95 88.36 MW-24 Direct Push 13.60 4/13/2021 1 ½- inch/PVC 97.13 4 to 14 3 to 14 8.50 88.63 8.60 88.53 8.71 88.42 MW-25 Direct Push 13.67 4/13/2021 1 ½- inch/PVC 95.35 4 to 14 3 to 14 7.93 87.42 8.05 87.30 8.19 87.16 MW-26 Direct Push 15.33 11/4/2022 1 ½- inch/PVC 99.59 5 to 15 3 to 15 7.85 91.74 8.05 91.54 NM NA MW-27 Direct Push 15.33 11/4/2022 1 ½- inch/PVC 99.27 5 to 15 3 to 15 7.58 91.69 7.81 91.46 NM NA MW-28 Direct Push 15.33 11/4/2022 1 ½- inch/PVC 99.58 5 to 15 3 to 15 7.93 91.65 8.14 91.44 NM NA MW-29 Direct Push 14.95 11/2/2022 1 ½- inch/PVC 95.92 5 to 15 3 to 15 6.45 89.47 6.66 89.26 6.63 89.29 MW-30 Direct Push 15.33 11/3/2022 1 ½- inch/PVC 95.07 5 to 15 3 to 15 7.62 87.45 7.72 87.35 7.84 87.23 MW-31 Direct Push 15.33 11/3/2022 1 ½- inch/PVC 94.57 5 to 15 3 to 15 7.42 87.15 7.50 87.07 7.63 86.94 MW-32 Direct Push 14.98 11/3/2022 1 ½- inch/PVC 93.99 5 to 15 3 to 15 7.61 86.38 7.59 86.40 7.78 86.21 MW-33 Direct Push 29.85 11/4/2022 1 ½- inch/PVC 99.76 25 to 30 3 to 30 7.80 91.96 7.32 92.44 NM NA MW-34 Direct Push 49.15 11/7/2022 1 ½- inch/PVC 99.70 44 to 49 3 to 49 7.72 91.98 7.13 92.57 NM NA MW-35 Direct Push 30.14 11/2/2022 1 ½- inch/PVC 98.96 25 to 30 3 to 30 8.13 90.83 8.17 90.79 NM NA MW-36 Direct Push 47.01 11/3/2022 1 ½- inch/PVC 99.06 42 to 47 3 to 47 7.88 91.18 7.43 91.63 NM NA MW-37 Direct Push 30.33 11/2/2022 1 ½- inch/PVC 99.40 25 to 30 3 to 30 6.69 92.71 5.17 94.23 5.05 94.35 MW-38 Direct Push 48.90 11/2/2022 1 ½- inch/PVC 99.81 9 to 49 3 to 49 10.18 89.63 4.90 94.91 4.88 94.93 MW-39 Direct Push 15.33 11/2/2022 1 ½- inch/PVC 95.01 5 to 15 3 to 15 7.59 87.42 7.68 87.33 7.79 87.22 MW-39A Direct Push 31.57 11/3/2022 1 ½- inch/PVC 94.95 26 to 31 3 to 31 7.60 87.35 7.64 87.31 7.73 87.22 MW-40 Direct Push 15.33 11/2/2022 1 ½- inch/PVC 95.09 5 to 15 3 to 15 7.73 87.36 7.85 87.24 7.98 87.11 MW-40A Direct Push 49.35 11/1/2022 1 ½- inch/PVC 94.85 44 to 49 3 to 49 6.93 87.92 6.20 88.65 6.52 88.33 MW-41 Direct Push 14.27 11/1/2022 1 ½- inch/PVC 93.55 4 to 14 3 to 14 8.11 85.44 8.19 85.36 8.26 85.29 MW-42 Direct Push 15.33 12/29/2022 1 ½- inch/PVC 93.09 5 to 15 3 to 15 6.37 86.72 6.71 86.38 6.80 86.29 MW-43 Direct Push 15.33 12/29/2022 1 ½- inch/PVC 92.36 5 to 15 3 to 15 5.64 86.72 6.00 86.36 6.26 86.10 MW-44 Direct Push 15.33 12/29/2022 1 ½- inch/PVC 92.69 5 to 15 3 to 15 6.03 86.66 6.49 86.20 6.75 85.94 MW-45 Direct Push 15.33 12/29/2022 1 ½- inch/PVC 93.99 5 to 15 3 to 15 6.20 87.79 7.04 86.95 7.21 86.78 MW-46 Direct Push 15.33 12/29/2022 1 ½- inch/PVC 93.81 5 to 15 3 to 15 6.13 87.68 6.91 86.90 7.01 86.80 MW-47 Direct Push 15.33 12/30/2022 1 ½- inch/PVC 92.22 5 to 15 3 to 15 6.33 85.89 6.69 85.53 6.84 85.38 MW-48 Direct Push 15.33 6/28/2023 1 ½- inch/PVC 90.07 5 to 15 3 to 15 7.02 83.05 8.09 81.98 MW-49 Direct Push 15.33 6/28/2023 1 ½- inch/PVC 90.75 5 to 15 3 to 15 7.11 83.64 7.97 82.78 MW-50 Direct Push 14.66 6/28/2023 1 ½- inch/PVC 92.21 5 to 15 3 to 15 8.22 83.99 8.81 83.40 *Depth to water measured in wells on November 21, 2022 for MW-1 to 41 and January 9, 2023 for MW-42 to 47 BTOC = Below Top of Casing RSB = Relative to Site Benchmark on southwest corner of Forsey building slab = 100' NM = Not Measured 7/5/2023 & 7/6/202311/21/2022 & 1/9/2023* Table 6 - Monitoring Well Construction Data Forsey Cleaners 8/19/2024 & 8/20/2024 APPENDIX B PACE LABORATORY REPORTS ANALYTICAL REPORT December 26, 2024 Applied GeoTech Sample Delivery Group:L1810866 Samples Received:12/18/2024 Project Number:1240902 Description:Forseys Report To:Thomas Atkinson 600 West Sandy Parkway Sandy, UT 84070 Entire Report Reviewed By: December 26, 2024 [Preliminary Report] Daphne Richards 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 mydata.pacelabs.com 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Applied GeoTech 1240902 L1810866 12/26/24 15:54 1 of 31 December 26, 2024 Shane Gambill Project Manager ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Applied GeoTech 1240902 L1810866 12/26/24 16:28 1 of 31 TABLE OF CONTENTS Cp: Cover Page 1 Tc: Table of Contents 2 Ss: Sample Summary 3 Cn: Case Narrative 5 Sr: Sample Results 6 SG-1 L1810866-01 6 SG-2 L1810866-02 8 SG-3 L1810866-03 10 SG-4 L1810866-04 12 SG-5 L1810866-05 14 SG-6 L1810866-06 16 SG-7 L1810866-07 18 SG-8 L1810866-08 20 SG-9 L1810866-09 22 Qc: Quality Control Summary 24 Volatile Organic Compounds (MS) by Method TO-15 24 Gl: Glossary of Terms 29 Al: Accreditations & Locations 30 Sc: Sample Chain of Custody 31 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Applied GeoTech 1240902 L1810866 12/26/24 15:54 2 of 31 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Applied GeoTech 1240902 L1810866 12/26/24 16:28 2 of 31 SAMPLE SUMMARY Collected by Collected date/time Received date/time SG-1 L1810866-01 Air Joe DeGooyer 12/16/24 11:05 12/18/24 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (MS) by Method TO-15 WG2422647 1 12/20/24 14:53 12/20/24 14:53 WDB Mt. Juliet, TN Collected by Collected date/time Received date/time SG-2 L1810866-02 Air Joe DeGooyer 12/16/24 11:47 12/18/24 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (MS) by Method TO-15 WG2422647 1 12/20/24 15:22 12/20/24 15:22 WDB Mt. Juliet, TN Collected by Collected date/time Received date/time SG-3 L1810866-03 Air Joe DeGooyer 12/16/24 12:20 12/18/24 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (MS) by Method TO-15 WG2422647 1 12/20/24 15:50 12/20/24 15:50 WDB Mt. Juliet, TN Collected by Collected date/time Received date/time SG-4 L1810866-04 Air Joe DeGooyer 12/16/24 12:57 12/18/24 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (MS) by Method TO-15 WG2422647 1 12/20/24 16:19 12/20/24 16:19 JAP Mt. Juliet, TN Collected by Collected date/time Received date/time SG-5 L1810866-05 Air Joe DeGooyer 12/16/24 14:30 12/18/24 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (MS) by Method TO-15 WG2422647 1 12/20/24 16:53 12/20/24 16:53 WDB Mt. Juliet, TN Volatile Organic Compounds (MS) by Method TO-15 WG2424973 10 12/26/24 12:26 12/26/24 12:26 CRT Mt. Juliet, TN Collected by Collected date/time Received date/time SG-6 L1810866-06 Air Joe DeGooyer 12/16/24 13:37 12/18/24 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (MS) by Method TO-15 WG2422647 1 12/20/24 17:21 12/20/24 17:21 WDB Mt. Juliet, TN Volatile Organic Compounds (MS) by Method TO-15 WG2424973 42.2 12/26/24 12:00 12/26/24 12:00 CRT Mt. Juliet, TN Collected by Collected date/time Received date/time SG-7 L1810866-07 Air Joe DeGooyer 12/16/24 14:00 12/18/24 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (MS) by Method TO-15 WG2422647 1 12/20/24 17:49 12/20/24 17:49 WDB Mt. Juliet, TN Collected by Collected date/time Received date/time SG-8 L1810866-08 Air Joe DeGooyer 12/16/24 14:55 12/18/24 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (MS) by Method TO-15 WG2422647 1 12/20/24 18:18 12/20/24 18:18 JAP Mt. Juliet, TN 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Applied GeoTech 1240902 L1810866 12/26/24 15:54 3 of 31 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Applied GeoTech 1240902 L1810866 12/26/24 16:28 3 of 31 SAMPLE SUMMARY Collected by Collected date/time Received date/time SG-9 L1810866-09 Air Joe DeGooyer 12/16/24 15:20 12/18/24 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (MS) by Method TO-15 WG2422647 1 12/20/24 18:47 12/20/24 18:47 WDB Mt. Juliet, TN 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Applied GeoTech 1240902 L1810866 12/26/24 15:54 4 of 31 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Applied GeoTech 1240902 L1810866 12/26/24 16:28 4 of 31 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] Daphne Richards Project Manager 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Applied GeoTech 1240902 L1810866 12/26/24 15:54 5 of 31 Shane Gambill Project Manager ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Applied GeoTech 1240902 L1810866 12/26/24 16:28 5 of 31 SAMPLE RESULTS - 01 L1810866 SG-1 Collected date/time: 12/16/24 11:05 Volatile Organic Compounds (MS) by Method TO-15 CAS # Mol. Wt. RDL1 RDL2 Result Result Qualifier Dilution Batch Analyte ppbv ug/m3 ppbv ug/m3 Acetone 67-64-1 58.10 1.25 2.97 41.6 98.9 1 WG2422647 Allyl chloride 107-05-1 76.53 0.200 0.626 ND ND 1 WG2422647 Benzene 71-43-2 78.10 0.200 0.639 0.674 2.15 1 WG2422647 Benzyl Chloride 100-44-7 127 0.200 1.04 ND ND 1 WG2422647 Bromodichloromethane 75-27-4 164 0.200 1.34 ND ND 1 WG2422647 Bromoform 75-25-2 253 0.630 6.52 ND ND 1 WG2422647 Bromomethane 74-83-9 94.90 0.200 0.776 ND ND 1 WG2422647 1,3-Butadiene 106-99-0 54.10 2.00 4.43 2.62 5.80 1 WG2422647 Carbon disulfide 75-15-0 76.10 0.400 1.24 0.627 1.95 1 WG2422647 Carbon tetrachloride 56-23-5 154 0.200 1.26 ND ND 1 WG2422647 Chlorobenzene 108-90-7 113 0.200 0.924 ND ND 1 WG2422647 Chloroethane 75-00-3 64.50 0.200 0.528 ND ND 1 WG2422647 Chloroform 67-66-3 119 0.200 0.973 ND ND 1 WG2422647 Chloromethane 74-87-3 50.50 0.200 0.413 0.682 1.41 1 WG2422647 2-Chlorotoluene 95-49-8 126 0.200 1.03 ND ND 1 WG2422647 Cyclohexane 110-82-7 84.20 0.200 0.689 ND ND 1 WG2422647 Dibromochloromethane 124-48-1 208 0.200 1.70 ND ND 1 WG2422647 1,2-Dibromoethane 106-93-4 188 0.200 1.54 ND ND 1 WG2422647 1,2-Dichlorobenzene 95-50-1 147 0.200 1.20 ND ND 1 WG2422647 1,3-Dichlorobenzene 541-73-1 147 0.200 1.20 ND ND 1 WG2422647 1,4-Dichlorobenzene 106-46-7 147 0.200 1.20 ND ND 1 WG2422647 1,2-Dichloroethane 107-06-2 99 0.200 0.810 ND ND 1 WG2422647 1,1-Dichloroethane 75-34-3 98 0.200 0.802 ND ND 1 WG2422647 1,1-Dichloroethene 75-35-4 96.90 0.200 0.793 ND ND 1 WG2422647 cis-1,2-Dichloroethene 156-59-2 96.90 0.200 0.793 ND ND 1 WG2422647 trans-1,2-Dichloroethene 156-60-5 96.90 0.200 0.793 ND ND 1 WG2422647 1,2-Dichloropropane 78-87-5 113 0.200 0.924 ND ND 1 WG2422647 cis-1,3-Dichloropropene 10061-01-5 111 0.200 0.908 ND ND 1 WG2422647 trans-1,3-Dichloropropene 10061-02-6 111 0.200 0.908 ND ND 1 WG2422647 1,4-Dioxane 123-91-1 88.10 0.630 2.27 ND ND 1 WG2422647 Ethanol 64-17-5 46.10 2.50 4.71 ND ND 1 WG2422647 Ethylbenzene 100-41-4 106 0.200 0.867 ND ND 1 WG2422647 4-Ethyltoluene 622-96-8 120 0.200 0.982 ND ND 1 WG2422647 Trichlorofluoromethane 75-69-4 137.40 0.200 1.12 0.238 1.34 1 WG2422647 Dichlorodifluoromethane 75-71-8 120.92 0.200 0.989 0.532 2.63 1 WG2422647 1,1,2-Trichlorotrifluoroethane 76-13-1 187.40 0.200 1.53 ND ND 1 WG2422647 1,2-Dichlorotetrafluoroethane 76-14-2 171 0.200 1.40 ND ND 1 WG2422647 Heptane 142-82-5 100 0.200 0.818 0.410 1.68 1 WG2422647 Hexachloro-1,3-butadiene 87-68-3 261 0.630 6.73 ND ND 1 WG2422647 n-Hexane 110-54-3 86.20 0.630 2.22 1.74 6.13 1 WG2422647 Isopropylbenzene 98-82-8 120.20 0.200 0.983 ND ND 1 WG2422647 Methylene Chloride 75-09-2 84.90 0.200 0.694 0.410 1.42 1 WG2422647 Methyl Butyl Ketone 591-78-6 100 1.25 5.11 ND ND 1 WG2422647 2-Butanone (MEK)78-93-3 72.10 1.25 3.69 5.92 17.5 1 WG2422647 4-Methyl-2-pentanone (MIBK) 108-10-1 100.10 1.25 5.12 ND ND 1 WG2422647 Methyl methacrylate 80-62-6 100.12 0.200 0.819 ND ND 1 WG2422647 MTBE 1634-04-4 88.10 0.200 0.721 ND ND 1 WG2422647 Naphthalene 91-20-3 128 0.630 3.30 ND ND 1 WG2422647 2-Propanol 67-63-0 60.10 1.25 3.07 ND ND 1 WG2422647 Propene 115-07-1 42.10 1.25 2.15 18.1 31.2 1 WG2422647 Styrene 100-42-5 104 0.400 1.70 ND ND 1 WG2422647 1,1,2,2-Tetrachloroethane 79-34-5 168 0.200 1.37 ND ND 1 WG2422647 Tetrachloroethylene 127-18-4 166 0.200 1.36 2.16 14.7 1 WG2422647 Tetrahydrofuran 109-99-9 72.10 0.200 0.590 0.377 1.11 1 WG2422647 Toluene 108-88-3 92.10 0.500 1.88 0.502 1.89 1 WG2422647 1,2,4-Trichlorobenzene 120-82-1 181 0.630 4.66 ND ND 1 WG2422647 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Applied GeoTech 1240902 L1810866 12/26/24 15:54 6 of 31 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Applied GeoTech 1240902 L1810866 12/26/24 16:28 6 of 31 SAMPLE RESULTS - 01 L1810866 SG-1 Collected date/time: 12/16/24 11:05 Volatile Organic Compounds (MS) by Method TO-15 CAS # Mol. Wt. RDL1 RDL2 Result Result Qualifier Dilution Batch Analyte ppbv ug/m3 ppbv ug/m3 1,1,1-Trichloroethane 71-55-6 133 0.200 1.09 ND ND 1 WG2422647 1,1,2-Trichloroethane 79-00-5 133 0.200 1.09 ND ND 1 WG2422647 Trichloroethylene 79-01-6 131 0.200 1.07 ND ND 1 WG2422647 1,2,4-Trimethylbenzene 95-63-6 120 0.200 0.982 ND ND 1 WG2422647 1,3,5-Trimethylbenzene 108-67-8 120 0.200 0.982 ND ND 1 WG2422647 2,2,4-Trimethylpentane 540-84-1 114.22 0.200 0.934 ND ND 1 WG2422647 Vinyl chloride 75-01-4 62.50 0.200 0.511 ND ND 1 WG2422647 Vinyl Bromide 593-60-2 106.95 0.200 0.875 ND ND 1 WG2422647 Vinyl acetate 108-05-4 86.10 0.630 2.22 0.876 3.08 1 WG2422647 Xylenes, Total 1330-20-7 106.16 0.600 2.61 ND ND 1 WG2422647 m&p-Xylene 179601-23-1 106 0.400 1.73 ND ND 1 WG2422647 o-Xylene 95-47-6 106 0.200 0.867 ND ND 1 WG2422647 (S) 1,4-Bromofluorobenzene 460-00-4 175 60.0-140 97.4 WG2422647 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Applied GeoTech 1240902 L1810866 12/26/24 15:54 7 of 31 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Applied GeoTech 1240902 L1810866 12/26/24 16:28 7 of 31 SAMPLE RESULTS - 02 L1810866 SG-2 Collected date/time: 12/16/24 11:47 Volatile Organic Compounds (MS) by Method TO-15 CAS # Mol. Wt. RDL1 RDL2 Result Result Qualifier Dilution Batch Analyte ppbv ug/m3 ppbv ug/m3 Acetone 67-64-1 58.10 1.25 2.97 54.5 130 1 WG2422647 Allyl chloride 107-05-1 76.53 0.200 0.626 ND ND 1 WG2422647 Benzene 71-43-2 78.10 0.200 0.639 0.325 1.04 1 WG2422647 Benzyl Chloride 100-44-7 127 0.200 1.04 ND ND 1 WG2422647 Bromodichloromethane 75-27-4 164 0.200 1.34 ND ND 1 WG2422647 Bromoform 75-25-2 253 0.630 6.52 ND ND 1 WG2422647 Bromomethane 74-83-9 94.90 0.200 0.776 ND ND 1 WG2422647 1,3-Butadiene 106-99-0 54.10 2.00 4.43 ND ND 1 WG2422647 Carbon disulfide 75-15-0 76.10 0.400 1.24 0.801 2.49 1 WG2422647 Carbon tetrachloride 56-23-5 154 0.200 1.26 ND ND 1 WG2422647 Chlorobenzene 108-90-7 113 0.200 0.924 ND ND 1 WG2422647 Chloroethane 75-00-3 64.50 0.200 0.528 ND ND 1 WG2422647 Chloroform 67-66-3 119 0.200 0.973 ND ND 1 WG2422647 Chloromethane 74-87-3 50.50 0.200 0.413 0.665 1.37 1 WG2422647 2-Chlorotoluene 95-49-8 126 0.200 1.03 ND ND 1 WG2422647 Cyclohexane 110-82-7 84.20 0.200 0.689 ND ND 1 WG2422647 Dibromochloromethane 124-48-1 208 0.200 1.70 ND ND 1 WG2422647 1,2-Dibromoethane 106-93-4 188 0.200 1.54 ND ND 1 WG2422647 1,2-Dichlorobenzene 95-50-1 147 0.200 1.20 ND ND 1 WG2422647 1,3-Dichlorobenzene 541-73-1 147 0.200 1.20 ND ND 1 WG2422647 1,4-Dichlorobenzene 106-46-7 147 0.200 1.20 ND ND 1 WG2422647 1,2-Dichloroethane 107-06-2 99 0.200 0.810 ND ND 1 WG2422647 1,1-Dichloroethane 75-34-3 98 0.200 0.802 ND ND 1 WG2422647 1,1-Dichloroethene 75-35-4 96.90 0.200 0.793 ND ND 1 WG2422647 cis-1,2-Dichloroethene 156-59-2 96.90 0.200 0.793 ND ND 1 WG2422647 trans-1,2-Dichloroethene 156-60-5 96.90 0.200 0.793 ND ND 1 WG2422647 1,2-Dichloropropane 78-87-5 113 0.200 0.924 ND ND 1 WG2422647 cis-1,3-Dichloropropene 10061-01-5 111 0.200 0.908 ND ND 1 WG2422647 trans-1,3-Dichloropropene 10061-02-6 111 0.200 0.908 ND ND 1 WG2422647 1,4-Dioxane 123-91-1 88.10 0.630 2.27 ND ND 1 WG2422647 Ethanol 64-17-5 46.10 2.50 4.71 3.52 6.64 1 WG2422647 Ethylbenzene 100-41-4 106 0.200 0.867 ND ND 1 WG2422647 4-Ethyltoluene 622-96-8 120 0.200 0.982 ND ND 1 WG2422647 Trichlorofluoromethane 75-69-4 137.40 0.200 1.12 0.286 1.61 1 WG2422647 Dichlorodifluoromethane 75-71-8 120.92 0.200 0.989 0.403 1.99 1 WG2422647 1,1,2-Trichlorotrifluoroethane 76-13-1 187.40 0.200 1.53 ND ND 1 WG2422647 1,2-Dichlorotetrafluoroethane 76-14-2 171 0.200 1.40 ND ND 1 WG2422647 Heptane 142-82-5 100 0.200 0.818 0.315 1.29 1 WG2422647 Hexachloro-1,3-butadiene 87-68-3 261 0.630 6.73 ND ND 1 WG2422647 n-Hexane 110-54-3 86.20 0.630 2.22 1.20 4.23 1 WG2422647 Isopropylbenzene 98-82-8 120.20 0.200 0.983 ND ND 1 WG2422647 Methylene Chloride 75-09-2 84.90 0.200 0.694 0.428 1.49 1 WG2422647 Methyl Butyl Ketone 591-78-6 100 1.25 5.11 ND ND 1 WG2422647 2-Butanone (MEK)78-93-3 72.10 1.25 3.69 7.54 22.2 1 WG2422647 4-Methyl-2-pentanone (MIBK) 108-10-1 100.10 1.25 5.12 ND ND 1 WG2422647 Methyl methacrylate 80-62-6 100.12 0.200 0.819 ND ND 1 WG2422647 MTBE 1634-04-4 88.10 0.200 0.721 ND ND 1 WG2422647 Naphthalene 91-20-3 128 0.630 3.30 ND ND 1 WG2422647 2-Propanol 67-63-0 60.10 1.25 3.07 2.66 6.54 1 WG2422647 Propene 115-07-1 42.10 1.25 2.15 ND ND 1 WG2422647 Styrene 100-42-5 104 0.400 1.70 ND ND 1 WG2422647 1,1,2,2-Tetrachloroethane 79-34-5 168 0.200 1.37 ND ND 1 WG2422647 Tetrachloroethylene 127-18-4 166 0.200 1.36 27.5 187 1 WG2422647 Tetrahydrofuran 109-99-9 72.10 0.200 0.590 0.308 0.908 1 WG2422647 Toluene 108-88-3 92.10 0.500 1.88 ND ND 1 WG2422647 1,2,4-Trichlorobenzene 120-82-1 181 0.630 4.66 ND ND 1 WG2422647 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Applied GeoTech 1240902 L1810866 12/26/24 15:54 8 of 31 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Applied GeoTech 1240902 L1810866 12/26/24 16:28 8 of 31 SAMPLE RESULTS - 02 L1810866 SG-2 Collected date/time: 12/16/24 11:47 Volatile Organic Compounds (MS) by Method TO-15 CAS # Mol. Wt. RDL1 RDL2 Result Result Qualifier Dilution Batch Analyte ppbv ug/m3 ppbv ug/m3 1,1,1-Trichloroethane 71-55-6 133 0.200 1.09 ND ND 1 WG2422647 1,1,2-Trichloroethane 79-00-5 133 0.200 1.09 ND ND 1 WG2422647 Trichloroethylene 79-01-6 131 0.200 1.07 ND ND 1 WG2422647 1,2,4-Trimethylbenzene 95-63-6 120 0.200 0.982 0.207 1.02 1 WG2422647 1,3,5-Trimethylbenzene 108-67-8 120 0.200 0.982 ND ND 1 WG2422647 2,2,4-Trimethylpentane 540-84-1 114.22 0.200 0.934 ND ND 1 WG2422647 Vinyl chloride 75-01-4 62.50 0.200 0.511 ND ND 1 WG2422647 Vinyl Bromide 593-60-2 106.95 0.200 0.875 ND ND 1 WG2422647 Vinyl acetate 108-05-4 86.10 0.630 2.22 1.07 3.77 1 WG2422647 Xylenes, Total 1330-20-7 106.16 0.600 2.61 ND ND 1 WG2422647 m&p-Xylene 179601-23-1 106 0.400 1.73 ND ND 1 WG2422647 o-Xylene 95-47-6 106 0.200 0.867 ND ND 1 WG2422647 (S) 1,4-Bromofluorobenzene 460-00-4 175 60.0-140 97.4 WG2422647 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Applied GeoTech 1240902 L1810866 12/26/24 15:54 9 of 31 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Applied GeoTech 1240902 L1810866 12/26/24 16:28 9 of 31 SAMPLE RESULTS - 03 L1810866 SG-3 Collected date/time: 12/16/24 12:20 Volatile Organic Compounds (MS) by Method TO-15 CAS # Mol. Wt. RDL1 RDL2 Result Result Qualifier Dilution Batch Analyte ppbv ug/m3 ppbv ug/m3 Acetone 67-64-1 58.10 1.25 2.97 11.9 28.3 1 WG2422647 Allyl chloride 107-05-1 76.53 0.200 0.626 ND ND 1 WG2422647 Benzene 71-43-2 78.10 0.200 0.639 2.61 8.34 1 WG2422647 Benzyl Chloride 100-44-7 127 0.200 1.04 ND ND 1 WG2422647 Bromodichloromethane 75-27-4 164 0.200 1.34 ND ND 1 WG2422647 Bromoform 75-25-2 253 0.630 6.52 ND ND 1 WG2422647 Bromomethane 74-83-9 94.90 0.200 0.776 ND ND 1 WG2422647 1,3-Butadiene 106-99-0 54.10 2.00 4.43 6.33 14.0 1 WG2422647 Carbon disulfide 75-15-0 76.10 0.400 1.24 ND ND 1 WG2422647 Carbon tetrachloride 56-23-5 154 0.200 1.26 ND ND 1 WG2422647 Chlorobenzene 108-90-7 113 0.200 0.924 ND ND 1 WG2422647 Chloroethane 75-00-3 64.50 0.200 0.528 ND ND 1 WG2422647 Chloroform 67-66-3 119 0.200 0.973 ND ND 1 WG2422647 Chloromethane 74-87-3 50.50 0.200 0.413 0.222 0.459 1 WG2422647 2-Chlorotoluene 95-49-8 126 0.200 1.03 ND ND 1 WG2422647 Cyclohexane 110-82-7 84.20 0.200 0.689 ND ND 1 WG2422647 Dibromochloromethane 124-48-1 208 0.200 1.70 ND ND 1 WG2422647 1,2-Dibromoethane 106-93-4 188 0.200 1.54 ND ND 1 WG2422647 1,2-Dichlorobenzene 95-50-1 147 0.200 1.20 ND ND 1 WG2422647 1,3-Dichlorobenzene 541-73-1 147 0.200 1.20 ND ND 1 WG2422647 1,4-Dichlorobenzene 106-46-7 147 0.200 1.20 ND ND 1 WG2422647 1,2-Dichloroethane 107-06-2 99 0.200 0.810 ND ND 1 WG2422647 1,1-Dichloroethane 75-34-3 98 0.200 0.802 ND ND 1 WG2422647 1,1-Dichloroethene 75-35-4 96.90 0.200 0.793 ND ND 1 WG2422647 cis-1,2-Dichloroethene 156-59-2 96.90 0.200 0.793 ND ND 1 WG2422647 trans-1,2-Dichloroethene 156-60-5 96.90 0.200 0.793 ND ND 1 WG2422647 1,2-Dichloropropane 78-87-5 113 0.200 0.924 ND ND 1 WG2422647 cis-1,3-Dichloropropene 10061-01-5 111 0.200 0.908 ND ND 1 WG2422647 trans-1,3-Dichloropropene 10061-02-6 111 0.200 0.908 ND ND 1 WG2422647 1,4-Dioxane 123-91-1 88.10 0.630 2.27 ND ND 1 WG2422647 Ethanol 64-17-5 46.10 2.50 4.71 ND ND 1 WG2422647 Ethylbenzene 100-41-4 106 0.200 0.867 0.221 0.958 1 WG2422647 4-Ethyltoluene 622-96-8 120 0.200 0.982 ND ND 1 WG2422647 Trichlorofluoromethane 75-69-4 137.40 0.200 1.12 ND ND 1 WG2422647 Dichlorodifluoromethane 75-71-8 120.92 0.200 0.989 ND ND 1 WG2422647 1,1,2-Trichlorotrifluoroethane 76-13-1 187.40 0.200 1.53 ND ND 1 WG2422647 1,2-Dichlorotetrafluoroethane 76-14-2 171 0.200 1.40 ND ND 1 WG2422647 Heptane 142-82-5 100 0.200 0.818 0.364 1.49 1 WG2422647 Hexachloro-1,3-butadiene 87-68-3 261 0.630 6.73 ND ND 1 WG2422647 n-Hexane 110-54-3 86.20 0.630 2.22 0.703 2.48 1 WG2422647 Isopropylbenzene 98-82-8 120.20 0.200 0.983 ND ND 1 WG2422647 Methylene Chloride 75-09-2 84.90 0.200 0.694 0.355 1.23 1 WG2422647 Methyl Butyl Ketone 591-78-6 100 1.25 5.11 ND ND 1 WG2422647 2-Butanone (MEK)78-93-3 72.10 1.25 3.69 2.17 6.40 1 WG2422647 4-Methyl-2-pentanone (MIBK) 108-10-1 100.10 1.25 5.12 ND ND 1 WG2422647 Methyl methacrylate 80-62-6 100.12 0.200 0.819 ND ND 1 WG2422647 MTBE 1634-04-4 88.10 0.200 0.721 ND ND 1 WG2422647 Naphthalene 91-20-3 128 0.630 3.30 ND ND 1 WG2422647 2-Propanol 67-63-0 60.10 1.25 3.07 ND ND 1 WG2422647 Propene 115-07-1 42.10 1.25 2.15 48.5 83.5 1 WG2422647 Styrene 100-42-5 104 0.400 1.70 ND ND 1 WG2422647 1,1,2,2-Tetrachloroethane 79-34-5 168 0.200 1.37 ND ND 1 WG2422647 Tetrachloroethylene 127-18-4 166 0.200 1.36 25.1 170 1 WG2422647 Tetrahydrofuran 109-99-9 72.10 0.200 0.590 ND ND 1 WG2422647 Toluene 108-88-3 92.10 0.500 1.88 1.55 5.84 1 WG2422647 1,2,4-Trichlorobenzene 120-82-1 181 0.630 4.66 ND ND 1 WG2422647 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Applied GeoTech 1240902 L1810866 12/26/24 15:54 10 of 31 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Applied GeoTech 1240902 L1810866 12/26/24 16:28 10 of 31 SAMPLE RESULTS - 03 L1810866 SG-3 Collected date/time: 12/16/24 12:20 Volatile Organic Compounds (MS) by Method TO-15 CAS # Mol. Wt. RDL1 RDL2 Result Result Qualifier Dilution Batch Analyte ppbv ug/m3 ppbv ug/m3 1,1,1-Trichloroethane 71-55-6 133 0.200 1.09 ND ND 1 WG2422647 1,1,2-Trichloroethane 79-00-5 133 0.200 1.09 ND ND 1 WG2422647 Trichloroethylene 79-01-6 131 0.200 1.07 2.99 16.0 1 WG2422647 1,2,4-Trimethylbenzene 95-63-6 120 0.200 0.982 ND ND 1 WG2422647 1,3,5-Trimethylbenzene 108-67-8 120 0.200 0.982 ND ND 1 WG2422647 2,2,4-Trimethylpentane 540-84-1 114.22 0.200 0.934 ND ND 1 WG2422647 Vinyl chloride 75-01-4 62.50 0.200 0.511 ND ND 1 WG2422647 Vinyl Bromide 593-60-2 106.95 0.200 0.875 ND ND 1 WG2422647 Vinyl acetate 108-05-4 86.10 0.630 2.22 ND ND 1 WG2422647 Xylenes, Total 1330-20-7 106.16 0.600 2.61 0.606 2.63 1 WG2422647 m&p-Xylene 179601-23-1 106 0.400 1.73 0.408 1.77 1 WG2422647 o-Xylene 95-47-6 106 0.200 0.867 ND ND 1 WG2422647 (S) 1,4-Bromofluorobenzene 460-00-4 175 60.0-140 91.7 WG2422647 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Applied GeoTech 1240902 L1810866 12/26/24 15:54 11 of 31 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Applied GeoTech 1240902 L1810866 12/26/24 16:28 11 of 31 SAMPLE RESULTS - 04 L1810866 SG-4 Collected date/time: 12/16/24 12:57 Volatile Organic Compounds (MS) by Method TO-15 CAS # Mol. Wt. RDL1 RDL2 Result Result Qualifier Dilution Batch Analyte ppbv ug/m3 ppbv ug/m3 Acetone 67-64-1 58.10 1.25 2.97 129 307 E 1 WG2422647 Allyl chloride 107-05-1 76.53 0.200 0.626 ND ND 1 WG2422647 Benzene 71-43-2 78.10 0.200 0.639 1.71 5.46 1 WG2422647 Benzyl Chloride 100-44-7 127 0.200 1.04 ND ND 1 WG2422647 Bromodichloromethane 75-27-4 164 0.200 1.34 ND ND 1 WG2422647 Bromoform 75-25-2 253 0.630 6.52 ND ND 1 WG2422647 Bromomethane 74-83-9 94.90 0.200 0.776 ND ND 1 WG2422647 1,3-Butadiene 106-99-0 54.10 2.00 4.43 4.91 10.9 1 WG2422647 Carbon disulfide 75-15-0 76.10 0.400 1.24 0.630 1.96 1 WG2422647 Carbon tetrachloride 56-23-5 154 0.200 1.26 ND ND 1 WG2422647 Chlorobenzene 108-90-7 113 0.200 0.924 ND ND 1 WG2422647 Chloroethane 75-00-3 64.50 0.200 0.528 ND ND 1 WG2422647 Chloroform 67-66-3 119 0.200 0.973 ND ND 1 WG2422647 Chloromethane 74-87-3 50.50 0.200 0.413 0.737 1.52 1 WG2422647 2-Chlorotoluene 95-49-8 126 0.200 1.03 ND ND 1 WG2422647 Cyclohexane 110-82-7 84.20 0.200 0.689 ND ND 1 WG2422647 Dibromochloromethane 124-48-1 208 0.200 1.70 ND ND 1 WG2422647 1,2-Dibromoethane 106-93-4 188 0.200 1.54 ND ND 1 WG2422647 1,2-Dichlorobenzene 95-50-1 147 0.200 1.20 ND ND 1 WG2422647 1,3-Dichlorobenzene 541-73-1 147 0.200 1.20 ND ND 1 WG2422647 1,4-Dichlorobenzene 106-46-7 147 0.200 1.20 ND ND 1 WG2422647 1,2-Dichloroethane 107-06-2 99 0.200 0.810 ND ND 1 WG2422647 1,1-Dichloroethane 75-34-3 98 0.200 0.802 ND ND 1 WG2422647 1,1-Dichloroethene 75-35-4 96.90 0.200 0.793 ND ND 1 WG2422647 cis-1,2-Dichloroethene 156-59-2 96.90 0.200 0.793 ND ND 1 WG2422647 trans-1,2-Dichloroethene 156-60-5 96.90 0.200 0.793 ND ND 1 WG2422647 1,2-Dichloropropane 78-87-5 113 0.200 0.924 ND ND 1 WG2422647 cis-1,3-Dichloropropene 10061-01-5 111 0.200 0.908 ND ND 1 WG2422647 trans-1,3-Dichloropropene 10061-02-6 111 0.200 0.908 ND ND 1 WG2422647 1,4-Dioxane 123-91-1 88.10 0.630 2.27 ND ND 1 WG2422647 Ethanol 64-17-5 46.10 2.50 4.71 5.89 11.1 1 WG2422647 Ethylbenzene 100-41-4 106 0.200 0.867 ND ND 1 WG2422647 4-Ethyltoluene 622-96-8 120 0.200 0.982 ND ND 1 WG2422647 Trichlorofluoromethane 75-69-4 137.40 0.200 1.12 0.243 1.37 1 WG2422647 Dichlorodifluoromethane 75-71-8 120.92 0.200 0.989 0.526 2.60 1 WG2422647 1,1,2-Trichlorotrifluoroethane 76-13-1 187.40 0.200 1.53 ND ND 1 WG2422647 1,2-Dichlorotetrafluoroethane 76-14-2 171 0.200 1.40 ND ND 1 WG2422647 Heptane 142-82-5 100 0.200 0.818 0.797 3.26 1 WG2422647 Hexachloro-1,3-butadiene 87-68-3 261 0.630 6.73 ND ND 1 WG2422647 n-Hexane 110-54-3 86.20 0.630 2.22 1.07 3.77 1 WG2422647 Isopropylbenzene 98-82-8 120.20 0.200 0.983 ND ND 1 WG2422647 Methylene Chloride 75-09-2 84.90 0.200 0.694 0.746 2.59 1 WG2422647 Methyl Butyl Ketone 591-78-6 100 1.25 5.11 ND ND 1 WG2422647 2-Butanone (MEK)78-93-3 72.10 1.25 3.69 19.2 56.6 1 WG2422647 4-Methyl-2-pentanone (MIBK) 108-10-1 100.10 1.25 5.12 ND ND 1 WG2422647 Methyl methacrylate 80-62-6 100.12 0.200 0.819 ND ND 1 WG2422647 MTBE 1634-04-4 88.10 0.200 0.721 ND ND 1 WG2422647 Naphthalene 91-20-3 128 0.630 3.30 ND ND 1 WG2422647 2-Propanol 67-63-0 60.10 1.25 3.07 9.34 23.0 1 WG2422647 Propene 115-07-1 42.10 1.25 2.15 31.6 54.4 1 WG2422647 Styrene 100-42-5 104 0.400 1.70 ND ND 1 WG2422647 1,1,2,2-Tetrachloroethane 79-34-5 168 0.200 1.37 ND ND 1 WG2422647 Tetrachloroethylene 127-18-4 166 0.200 1.36 7.91 53.7 1 WG2422647 Tetrahydrofuran 109-99-9 72.10 0.200 0.590 0.570 1.68 1 WG2422647 Toluene 108-88-3 92.10 0.500 1.88 1.24 4.67 1 WG2422647 1,2,4-Trichlorobenzene 120-82-1 181 0.630 4.66 ND ND 1 WG2422647 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Applied GeoTech 1240902 L1810866 12/26/24 15:54 12 of 31 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Applied GeoTech 1240902 L1810866 12/26/24 16:28 12 of 31 SAMPLE RESULTS - 04 L1810866 SG-4 Collected date/time: 12/16/24 12:57 Volatile Organic Compounds (MS) by Method TO-15 CAS # Mol. Wt. RDL1 RDL2 Result Result Qualifier Dilution Batch Analyte ppbv ug/m3 ppbv ug/m3 1,1,1-Trichloroethane 71-55-6 133 0.200 1.09 ND ND 1 WG2422647 1,1,2-Trichloroethane 79-00-5 133 0.200 1.09 ND ND 1 WG2422647 Trichloroethylene 79-01-6 131 0.200 1.07 ND ND 1 WG2422647 1,2,4-Trimethylbenzene 95-63-6 120 0.200 0.982 ND ND 1 WG2422647 1,3,5-Trimethylbenzene 108-67-8 120 0.200 0.982 ND ND 1 WG2422647 2,2,4-Trimethylpentane 540-84-1 114.22 0.200 0.934 ND ND 1 WG2422647 Vinyl chloride 75-01-4 62.50 0.200 0.511 ND ND 1 WG2422647 Vinyl Bromide 593-60-2 106.95 0.200 0.875 ND ND 1 WG2422647 Vinyl acetate 108-05-4 86.10 0.630 2.22 1.56 5.49 1 WG2422647 Xylenes, Total 1330-20-7 106.16 0.600 2.61 0.836 3.63 1 WG2422647 m&p-Xylene 179601-23-1 106 0.400 1.73 0.488 2.12 1 WG2422647 o-Xylene 95-47-6 106 0.200 0.867 0.348 1.51 1 WG2422647 (S) 1,4-Bromofluorobenzene 460-00-4 175 60.0-140 98.3 WG2422647 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Applied GeoTech 1240902 L1810866 12/26/24 15:54 13 of 31 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Applied GeoTech 1240902 L1810866 12/26/24 16:28 13 of 31 SAMPLE RESULTS - 05 L1810866 SG-5 Collected date/time: 12/16/24 14:30 Volatile Organic Compounds (MS) by Method TO-15 CAS # Mol. Wt. RDL1 RDL2 Result Result Qualifier Dilution Batch Analyte ppbv ug/m3 ppbv ug/m3 Acetone 67-64-1 58.10 1.25 2.97 22.6 53.7 1 WG2422647 Allyl chloride 107-05-1 76.53 0.200 0.626 ND ND 1 WG2422647 Benzene 71-43-2 78.10 0.200 0.639 1.13 3.61 1 WG2422647 Benzyl Chloride 100-44-7 127 0.200 1.04 ND ND 1 WG2422647 Bromodichloromethane 75-27-4 164 0.200 1.34 ND ND 1 WG2422647 Bromoform 75-25-2 253 0.630 6.52 ND ND 1 WG2422647 Bromomethane 74-83-9 94.90 0.200 0.776 ND ND 1 WG2422647 1,3-Butadiene 106-99-0 54.10 2.00 4.43 4.58 10.1 1 WG2422647 Carbon disulfide 75-15-0 76.10 0.400 1.24 2.04 6.35 1 WG2422647 Carbon tetrachloride 56-23-5 154 0.200 1.26 ND ND 1 WG2422647 Chlorobenzene 108-90-7 113 0.200 0.924 ND ND 1 WG2422647 Chloroethane 75-00-3 64.50 0.200 0.528 ND ND 1 WG2422647 Chloroform 67-66-3 119 0.200 0.973 0.255 1.24 1 WG2422647 Chloromethane 74-87-3 50.50 0.200 0.413 0.333 0.688 1 WG2422647 2-Chlorotoluene 95-49-8 126 0.200 1.03 ND ND 1 WG2422647 Cyclohexane 110-82-7 84.20 0.200 0.689 0.266 0.916 1 WG2422647 Dibromochloromethane 124-48-1 208 0.200 1.70 ND ND 1 WG2422647 1,2-Dibromoethane 106-93-4 188 0.200 1.54 ND ND 1 WG2422647 1,2-Dichlorobenzene 95-50-1 147 0.200 1.20 ND ND 1 WG2422647 1,3-Dichlorobenzene 541-73-1 147 0.200 1.20 ND ND 1 WG2422647 1,4-Dichlorobenzene 106-46-7 147 0.200 1.20 ND ND 1 WG2422647 1,2-Dichloroethane 107-06-2 99 0.200 0.810 ND ND 1 WG2422647 1,1-Dichloroethane 75-34-3 98 0.200 0.802 ND ND 1 WG2422647 1,1-Dichloroethene 75-35-4 96.90 0.200 0.793 ND ND 1 WG2422647 cis-1,2-Dichloroethene 156-59-2 96.90 0.200 0.793 ND ND 1 WG2422647 trans-1,2-Dichloroethene 156-60-5 96.90 0.200 0.793 ND ND 1 WG2422647 1,2-Dichloropropane 78-87-5 113 0.200 0.924 ND ND 1 WG2422647 cis-1,3-Dichloropropene 10061-01-5 111 0.200 0.908 ND ND 1 WG2422647 trans-1,3-Dichloropropene 10061-02-6 111 0.200 0.908 ND ND 1 WG2422647 1,4-Dioxane 123-91-1 88.10 0.630 2.27 ND ND 1 WG2422647 Ethanol 64-17-5 46.10 2.50 4.71 4.79 9.03 1 WG2422647 Ethylbenzene 100-41-4 106 0.200 0.867 ND ND 1 WG2422647 4-Ethyltoluene 622-96-8 120 0.200 0.982 ND ND 1 WG2422647 Trichlorofluoromethane 75-69-4 137.40 0.200 1.12 0.213 1.20 1 WG2422647 Dichlorodifluoromethane 75-71-8 120.92 0.200 0.989 0.585 2.89 1 WG2422647 1,1,2-Trichlorotrifluoroethane 76-13-1 187.40 0.200 1.53 ND ND 1 WG2422647 1,2-Dichlorotetrafluoroethane 76-14-2 171 0.200 1.40 ND ND 1 WG2422647 Heptane 142-82-5 100 0.200 0.818 0.732 2.99 1 WG2422647 Hexachloro-1,3-butadiene 87-68-3 261 0.630 6.73 ND ND 1 WG2422647 n-Hexane 110-54-3 86.20 0.630 2.22 2.04 7.19 1 WG2422647 Isopropylbenzene 98-82-8 120.20 0.200 0.983 ND ND 1 WG2422647 Methylene Chloride 75-09-2 84.90 0.200 0.694 0.984 3.42 1 WG2422647 Methyl Butyl Ketone 591-78-6 100 1.25 5.11 ND ND 1 WG2422647 2-Butanone (MEK)78-93-3 72.10 1.25 3.69 4.26 12.6 1 WG2422647 4-Methyl-2-pentanone (MIBK) 108-10-1 100.10 1.25 5.12 ND ND 1 WG2422647 Methyl methacrylate 80-62-6 100.12 0.200 0.819 ND ND 1 WG2422647 MTBE 1634-04-4 88.10 0.200 0.721 ND ND 1 WG2422647 Naphthalene 91-20-3 128 0.630 3.30 ND ND 1 WG2422647 2-Propanol 67-63-0 60.10 1.25 3.07 ND ND 1 WG2422647 Propene 115-07-1 42.10 1.25 2.15 31.3 53.9 1 WG2422647 Styrene 100-42-5 104 0.400 1.70 ND ND 1 WG2422647 1,1,2,2-Tetrachloroethane 79-34-5 168 0.200 1.37 ND ND 1 WG2422647 Tetrachloroethylene 127-18-4 166 2.00 13.6 648 4400 10 WG2424973 Tetrahydrofuran 109-99-9 72.10 0.200 0.590 ND ND 1 WG2422647 Toluene 108-88-3 92.10 0.500 1.88 1.19 4.48 1 WG2422647 1,2,4-Trichlorobenzene 120-82-1 181 0.630 4.66 ND ND 1 WG2422647 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Applied GeoTech 1240902 L1810866 12/26/24 15:54 14 of 31 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Applied GeoTech 1240902 L1810866 12/26/24 16:28 14 of 31 SAMPLE RESULTS - 05 L1810866 SG-5 Collected date/time: 12/16/24 14:30 Volatile Organic Compounds (MS) by Method TO-15 CAS # Mol. Wt. RDL1 RDL2 Result Result Qualifier Dilution Batch Analyte ppbv ug/m3 ppbv ug/m3 1,1,1-Trichloroethane 71-55-6 133 0.200 1.09 ND ND 1 WG2422647 1,1,2-Trichloroethane 79-00-5 133 0.200 1.09 ND ND 1 WG2422647 Trichloroethylene 79-01-6 131 0.200 1.07 11.4 61.1 1 WG2422647 1,2,4-Trimethylbenzene 95-63-6 120 0.200 0.982 0.242 1.19 1 WG2422647 1,3,5-Trimethylbenzene 108-67-8 120 0.200 0.982 ND ND 1 WG2422647 2,2,4-Trimethylpentane 540-84-1 114.22 0.200 0.934 ND ND 1 WG2422647 Vinyl chloride 75-01-4 62.50 0.200 0.511 ND ND 1 WG2422647 Vinyl Bromide 593-60-2 106.95 0.200 0.875 ND ND 1 WG2422647 Vinyl acetate 108-05-4 86.10 0.630 2.22 ND ND 1 WG2422647 Xylenes, Total 1330-20-7 106.16 0.600 2.61 0.859 3.73 1 WG2422647 m&p-Xylene 179601-23-1 106 0.400 1.73 0.596 2.58 1 WG2422647 o-Xylene 95-47-6 106 0.200 0.867 0.263 1.14 1 WG2422647 (S) 1,4-Bromofluorobenzene 460-00-4 175 60.0-140 92.5 WG2422647 (S) 1,4-Bromofluorobenzene 460-00-4 175 60.0-140 84.7 WG2424973 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Applied GeoTech 1240902 L1810866 12/26/24 15:54 15 of 31 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Applied GeoTech 1240902 L1810866 12/26/24 16:28 15 of 31 SAMPLE RESULTS - 06 L1810866 SG-6 Collected date/time: 12/16/24 13:37 Volatile Organic Compounds (MS) by Method TO-15 CAS # Mol. Wt. RDL1 RDL2 Result Result Qualifier Dilution Batch Analyte ppbv ug/m3 ppbv ug/m3 Acetone 67-64-1 58.10 1.25 2.97 6.89 16.4 1 WG2422647 Allyl chloride 107-05-1 76.53 0.200 0.626 ND ND 1 WG2422647 Benzene 71-43-2 78.10 0.200 0.639 4.85 15.5 1 WG2422647 Benzyl Chloride 100-44-7 127 0.200 1.04 ND ND 1 WG2422647 Bromodichloromethane 75-27-4 164 0.200 1.34 ND ND 1 WG2422647 Bromoform 75-25-2 253 0.630 6.52 ND ND 1 WG2422647 Bromomethane 74-83-9 94.90 0.200 0.776 ND ND 1 WG2422647 1,3-Butadiene 106-99-0 54.10 2.00 4.43 2.05 4.54 1 WG2422647 Carbon disulfide 75-15-0 76.10 0.400 1.24 0.436 1.36 1 WG2422647 Carbon tetrachloride 56-23-5 154 0.200 1.26 ND ND 1 WG2422647 Chlorobenzene 108-90-7 113 0.200 0.924 ND ND 1 WG2422647 Chloroethane 75-00-3 64.50 0.200 0.528 ND ND 1 WG2422647 Chloroform 67-66-3 119 0.200 0.973 ND ND 1 WG2422647 Chloromethane 74-87-3 50.50 0.200 0.413 ND ND 1 WG2422647 2-Chlorotoluene 95-49-8 126 0.200 1.03 ND ND 1 WG2422647 Cyclohexane 110-82-7 84.20 0.200 0.689 0.503 1.73 1 WG2422647 Dibromochloromethane 124-48-1 208 0.200 1.70 ND ND 1 WG2422647 1,2-Dibromoethane 106-93-4 188 0.200 1.54 ND ND 1 WG2422647 1,2-Dichlorobenzene 95-50-1 147 0.200 1.20 ND ND 1 WG2422647 1,3-Dichlorobenzene 541-73-1 147 0.200 1.20 ND ND 1 WG2422647 1,4-Dichlorobenzene 106-46-7 147 0.200 1.20 ND ND 1 WG2422647 1,2-Dichloroethane 107-06-2 99 0.200 0.810 ND ND 1 WG2422647 1,1-Dichloroethane 75-34-3 98 0.200 0.802 ND ND 1 WG2422647 1,1-Dichloroethene 75-35-4 96.90 0.200 0.793 ND ND 1 WG2422647 cis-1,2-Dichloroethene 156-59-2 96.90 0.200 0.793 ND ND 1 WG2422647 trans-1,2-Dichloroethene 156-60-5 96.90 0.200 0.793 ND ND 1 WG2422647 1,2-Dichloropropane 78-87-5 113 0.200 0.924 ND ND 1 WG2422647 cis-1,3-Dichloropropene 10061-01-5 111 0.200 0.908 ND ND 1 WG2422647 trans-1,3-Dichloropropene 10061-02-6 111 0.200 0.908 ND ND 1 WG2422647 1,4-Dioxane 123-91-1 88.10 0.630 2.27 ND ND 1 WG2422647 Ethanol 64-17-5 46.10 2.50 4.71 ND ND 1 WG2422647 Ethylbenzene 100-41-4 106 0.200 0.867 0.222 0.962 1 WG2422647 4-Ethyltoluene 622-96-8 120 0.200 0.982 ND ND 1 WG2422647 Trichlorofluoromethane 75-69-4 137.40 0.200 1.12 ND ND 1 WG2422647 Dichlorodifluoromethane 75-71-8 120.92 0.200 0.989 ND ND 1 WG2422647 1,1,2-Trichlorotrifluoroethane 76-13-1 187.40 0.200 1.53 ND ND 1 WG2422647 1,2-Dichlorotetrafluoroethane 76-14-2 171 0.200 1.40 ND ND 1 WG2422647 Heptane 142-82-5 100 0.200 0.818 0.298 1.22 1 WG2422647 Hexachloro-1,3-butadiene 87-68-3 261 0.630 6.73 ND ND 1 WG2422647 n-Hexane 110-54-3 86.20 0.630 2.22 0.769 2.71 1 WG2422647 Isopropylbenzene 98-82-8 120.20 0.200 0.983 ND ND 1 WG2422647 Methylene Chloride 75-09-2 84.90 0.200 0.694 0.450 1.56 1 WG2422647 Methyl Butyl Ketone 591-78-6 100 1.25 5.11 ND ND 1 WG2422647 2-Butanone (MEK)78-93-3 72.10 1.25 3.69 1.46 4.31 1 WG2422647 4-Methyl-2-pentanone (MIBK) 108-10-1 100.10 1.25 5.12 ND ND 1 WG2422647 Methyl methacrylate 80-62-6 100.12 0.200 0.819 ND ND 1 WG2422647 MTBE 1634-04-4 88.10 0.200 0.721 ND ND 1 WG2422647 Naphthalene 91-20-3 128 0.630 3.30 ND ND 1 WG2422647 2-Propanol 67-63-0 60.10 1.25 3.07 ND ND 1 WG2422647 Propene 115-07-1 42.10 1.25 2.15 13.2 22.7 1 WG2422647 Styrene 100-42-5 104 0.400 1.70 ND ND 1 WG2422647 1,1,2,2-Tetrachloroethane 79-34-5 168 0.200 1.37 ND ND 1 WG2422647 Tetrachloroethylene 127-18-4 166 8.44 57.3 1160 7880 42.2 WG2424973 Tetrahydrofuran 109-99-9 72.10 0.200 0.590 ND ND 1 WG2422647 Toluene 108-88-3 92.10 0.500 1.88 7.08 26.7 1 WG2422647 1,2,4-Trichlorobenzene 120-82-1 181 0.630 4.66 ND ND 1 WG2422647 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Applied GeoTech 1240902 L1810866 12/26/24 15:54 16 of 31 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Applied GeoTech 1240902 L1810866 12/26/24 16:28 16 of 31 SAMPLE RESULTS - 06 L1810866 SG-6 Collected date/time: 12/16/24 13:37 Volatile Organic Compounds (MS) by Method TO-15 CAS # Mol. Wt. RDL1 RDL2 Result Result Qualifier Dilution Batch Analyte ppbv ug/m3 ppbv ug/m3 1,1,1-Trichloroethane 71-55-6 133 0.200 1.09 ND ND 1 WG2422647 1,1,2-Trichloroethane 79-00-5 133 0.200 1.09 ND ND 1 WG2422647 Trichloroethylene 79-01-6 131 0.200 1.07 0.898 4.81 1 WG2422647 1,2,4-Trimethylbenzene 95-63-6 120 0.200 0.982 ND ND 1 WG2422647 1,3,5-Trimethylbenzene 108-67-8 120 0.200 0.982 ND ND 1 WG2422647 2,2,4-Trimethylpentane 540-84-1 114.22 0.200 0.934 0.218 1.02 1 WG2422647 Vinyl chloride 75-01-4 62.50 0.200 0.511 ND ND 1 WG2422647 Vinyl Bromide 593-60-2 106.95 0.200 0.875 ND ND 1 WG2422647 Vinyl acetate 108-05-4 86.10 0.630 2.22 ND ND 1 WG2422647 Xylenes, Total 1330-20-7 106.16 0.600 2.61 1.76 7.64 1 WG2422647 m&p-Xylene 179601-23-1 106 0.400 1.73 1.37 5.94 1 WG2422647 o-Xylene 95-47-6 106 0.200 0.867 0.385 1.67 1 WG2422647 (S) 1,4-Bromofluorobenzene 460-00-4 175 60.0-140 90.8 WG2422647 (S) 1,4-Bromofluorobenzene 460-00-4 175 60.0-140 86.0 WG2424973 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Applied GeoTech 1240902 L1810866 12/26/24 15:54 17 of 31 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Applied GeoTech 1240902 L1810866 12/26/24 16:28 17 of 31 SAMPLE RESULTS - 07 L1810866 SG-7 Collected date/time: 12/16/24 14:00 Volatile Organic Compounds (MS) by Method TO-15 CAS # Mol. Wt. RDL1 RDL2 Result Result Qualifier Dilution Batch Analyte ppbv ug/m3 ppbv ug/m3 Acetone 67-64-1 58.10 1.25 2.97 3.62 8.60 1 WG2422647 Allyl chloride 107-05-1 76.53 0.200 0.626 ND ND 1 WG2422647 Benzene 71-43-2 78.10 0.200 0.639 ND ND 1 WG2422647 Benzyl Chloride 100-44-7 127 0.200 1.04 ND ND 1 WG2422647 Bromodichloromethane 75-27-4 164 0.200 1.34 ND ND 1 WG2422647 Bromoform 75-25-2 253 0.630 6.52 ND ND 1 WG2422647 Bromomethane 74-83-9 94.90 0.200 0.776 ND ND 1 WG2422647 1,3-Butadiene 106-99-0 54.10 2.00 4.43 ND ND 1 WG2422647 Carbon disulfide 75-15-0 76.10 0.400 1.24 ND ND 1 WG2422647 Carbon tetrachloride 56-23-5 154 0.200 1.26 ND ND 1 WG2422647 Chlorobenzene 108-90-7 113 0.200 0.924 ND ND 1 WG2422647 Chloroethane 75-00-3 64.50 0.200 0.528 ND ND 1 WG2422647 Chloroform 67-66-3 119 0.200 0.973 ND ND 1 WG2422647 Chloromethane 74-87-3 50.50 0.200 0.413 0.628 1.30 1 WG2422647 2-Chlorotoluene 95-49-8 126 0.200 1.03 ND ND 1 WG2422647 Cyclohexane 110-82-7 84.20 0.200 0.689 ND ND 1 WG2422647 Dibromochloromethane 124-48-1 208 0.200 1.70 ND ND 1 WG2422647 1,2-Dibromoethane 106-93-4 188 0.200 1.54 ND ND 1 WG2422647 1,2-Dichlorobenzene 95-50-1 147 0.200 1.20 ND ND 1 WG2422647 1,3-Dichlorobenzene 541-73-1 147 0.200 1.20 ND ND 1 WG2422647 1,4-Dichlorobenzene 106-46-7 147 0.200 1.20 ND ND 1 WG2422647 1,2-Dichloroethane 107-06-2 99 0.200 0.810 ND ND 1 WG2422647 1,1-Dichloroethane 75-34-3 98 0.200 0.802 ND ND 1 WG2422647 1,1-Dichloroethene 75-35-4 96.90 0.200 0.793 ND ND 1 WG2422647 cis-1,2-Dichloroethene 156-59-2 96.90 0.200 0.793 ND ND 1 WG2422647 trans-1,2-Dichloroethene 156-60-5 96.90 0.200 0.793 ND ND 1 WG2422647 1,2-Dichloropropane 78-87-5 113 0.200 0.924 ND ND 1 WG2422647 cis-1,3-Dichloropropene 10061-01-5 111 0.200 0.908 ND ND 1 WG2422647 trans-1,3-Dichloropropene 10061-02-6 111 0.200 0.908 ND ND 1 WG2422647 1,4-Dioxane 123-91-1 88.10 0.630 2.27 ND ND 1 WG2422647 Ethanol 64-17-5 46.10 2.50 4.71 11.8 22.2 1 WG2422647 Ethylbenzene 100-41-4 106 0.200 0.867 ND ND 1 WG2422647 4-Ethyltoluene 622-96-8 120 0.200 0.982 ND ND 1 WG2422647 Trichlorofluoromethane 75-69-4 137.40 0.200 1.12 0.243 1.37 1 WG2422647 Dichlorodifluoromethane 75-71-8 120.92 0.200 0.989 0.543 2.69 1 WG2422647 1,1,2-Trichlorotrifluoroethane 76-13-1 187.40 0.200 1.53 ND ND 1 WG2422647 1,2-Dichlorotetrafluoroethane 76-14-2 171 0.200 1.40 ND ND 1 WG2422647 Heptane 142-82-5 100 0.200 0.818 ND ND 1 WG2422647 Hexachloro-1,3-butadiene 87-68-3 261 0.630 6.73 ND ND 1 WG2422647 n-Hexane 110-54-3 86.20 0.630 2.22 ND ND 1 WG2422647 Isopropylbenzene 98-82-8 120.20 0.200 0.983 ND ND 1 WG2422647 Methylene Chloride 75-09-2 84.90 0.200 0.694 0.682 2.37 1 WG2422647 Methyl Butyl Ketone 591-78-6 100 1.25 5.11 ND ND 1 WG2422647 2-Butanone (MEK)78-93-3 72.10 1.25 3.69 ND ND 1 WG2422647 4-Methyl-2-pentanone (MIBK) 108-10-1 100.10 1.25 5.12 ND ND 1 WG2422647 Methyl methacrylate 80-62-6 100.12 0.200 0.819 ND ND 1 WG2422647 MTBE 1634-04-4 88.10 0.200 0.721 ND ND 1 WG2422647 Naphthalene 91-20-3 128 0.630 3.30 ND ND 1 WG2422647 2-Propanol 67-63-0 60.10 1.25 3.07 3.30 8.11 1 WG2422647 Propene 115-07-1 42.10 1.25 2.15 ND ND 1 WG2422647 Styrene 100-42-5 104 0.400 1.70 ND ND 1 WG2422647 1,1,2,2-Tetrachloroethane 79-34-5 168 0.200 1.37 ND ND 1 WG2422647 Tetrachloroethylene 127-18-4 166 0.200 1.36 6.27 42.6 1 WG2422647 Tetrahydrofuran 109-99-9 72.10 0.200 0.590 ND ND 1 WG2422647 Toluene 108-88-3 92.10 0.500 1.88 ND ND 1 WG2422647 1,2,4-Trichlorobenzene 120-82-1 181 0.630 4.66 ND ND 1 WG2422647 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Applied GeoTech 1240902 L1810866 12/26/24 15:54 18 of 31 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Applied GeoTech 1240902 L1810866 12/26/24 16:28 18 of 31 SAMPLE RESULTS - 07 L1810866 SG-7 Collected date/time: 12/16/24 14:00 Volatile Organic Compounds (MS) by Method TO-15 CAS # Mol. Wt. RDL1 RDL2 Result Result Qualifier Dilution Batch Analyte ppbv ug/m3 ppbv ug/m3 1,1,1-Trichloroethane 71-55-6 133 0.200 1.09 ND ND 1 WG2422647 1,1,2-Trichloroethane 79-00-5 133 0.200 1.09 ND ND 1 WG2422647 Trichloroethylene 79-01-6 131 0.200 1.07 ND ND 1 WG2422647 1,2,4-Trimethylbenzene 95-63-6 120 0.200 0.982 ND ND 1 WG2422647 1,3,5-Trimethylbenzene 108-67-8 120 0.200 0.982 ND ND 1 WG2422647 2,2,4-Trimethylpentane 540-84-1 114.22 0.200 0.934 ND ND 1 WG2422647 Vinyl chloride 75-01-4 62.50 0.200 0.511 ND ND 1 WG2422647 Vinyl Bromide 593-60-2 106.95 0.200 0.875 ND ND 1 WG2422647 Vinyl acetate 108-05-4 86.10 0.630 2.22 ND ND 1 WG2422647 Xylenes, Total 1330-20-7 106.16 0.600 2.61 ND ND 1 WG2422647 m&p-Xylene 179601-23-1 106 0.400 1.73 ND ND 1 WG2422647 o-Xylene 95-47-6 106 0.200 0.867 ND ND 1 WG2422647 (S) 1,4-Bromofluorobenzene 460-00-4 175 60.0-140 85.3 WG2422647 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Applied GeoTech 1240902 L1810866 12/26/24 15:54 19 of 31 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Applied GeoTech 1240902 L1810866 12/26/24 16:28 19 of 31 SAMPLE RESULTS - 08 L1810866 SG-8 Collected date/time: 12/16/24 14:55 Volatile Organic Compounds (MS) by Method TO-15 CAS # Mol. Wt. RDL1 RDL2 Result Result Qualifier Dilution Batch Analyte ppbv ug/m3 ppbv ug/m3 Acetone 67-64-1 58.10 1.25 2.97 110 261 E 1 WG2422647 Allyl chloride 107-05-1 76.53 0.200 0.626 ND ND 1 WG2422647 Benzene 71-43-2 78.10 0.200 0.639 0.958 3.06 1 WG2422647 Benzyl Chloride 100-44-7 127 0.200 1.04 ND ND 1 WG2422647 Bromodichloromethane 75-27-4 164 0.200 1.34 ND ND 1 WG2422647 Bromoform 75-25-2 253 0.630 6.52 ND ND 1 WG2422647 Bromomethane 74-83-9 94.90 0.200 0.776 ND ND 1 WG2422647 1,3-Butadiene 106-99-0 54.10 2.00 4.43 ND ND 1 WG2422647 Carbon disulfide 75-15-0 76.10 0.400 1.24 ND ND 1 WG2422647 Carbon tetrachloride 56-23-5 154 0.200 1.26 ND ND 1 WG2422647 Chlorobenzene 108-90-7 113 0.200 0.924 ND ND 1 WG2422647 Chloroethane 75-00-3 64.50 0.200 0.528 ND ND 1 WG2422647 Chloroform 67-66-3 119 0.200 0.973 ND ND 1 WG2422647 Chloromethane 74-87-3 50.50 0.200 0.413 0.767 1.58 1 WG2422647 2-Chlorotoluene 95-49-8 126 0.200 1.03 ND ND 1 WG2422647 Cyclohexane 110-82-7 84.20 0.200 0.689 ND ND 1 WG2422647 Dibromochloromethane 124-48-1 208 0.200 1.70 ND ND 1 WG2422647 1,2-Dibromoethane 106-93-4 188 0.200 1.54 ND ND 1 WG2422647 1,2-Dichlorobenzene 95-50-1 147 0.200 1.20 ND ND 1 WG2422647 1,3-Dichlorobenzene 541-73-1 147 0.200 1.20 ND ND 1 WG2422647 1,4-Dichlorobenzene 106-46-7 147 0.200 1.20 ND ND 1 WG2422647 1,2-Dichloroethane 107-06-2 99 0.200 0.810 ND ND 1 WG2422647 1,1-Dichloroethane 75-34-3 98 0.200 0.802 ND ND 1 WG2422647 1,1-Dichloroethene 75-35-4 96.90 0.200 0.793 ND ND 1 WG2422647 cis-1,2-Dichloroethene 156-59-2 96.90 0.200 0.793 ND ND 1 WG2422647 trans-1,2-Dichloroethene 156-60-5 96.90 0.200 0.793 ND ND 1 WG2422647 1,2-Dichloropropane 78-87-5 113 0.200 0.924 ND ND 1 WG2422647 cis-1,3-Dichloropropene 10061-01-5 111 0.200 0.908 ND ND 1 WG2422647 trans-1,3-Dichloropropene 10061-02-6 111 0.200 0.908 ND ND 1 WG2422647 1,4-Dioxane 123-91-1 88.10 0.630 2.27 ND ND 1 WG2422647 Ethanol 64-17-5 46.10 2.50 4.71 5.56 10.5 1 WG2422647 Ethylbenzene 100-41-4 106 0.200 0.867 0.423 1.83 1 WG2422647 4-Ethyltoluene 622-96-8 120 0.200 0.982 ND ND 1 WG2422647 Trichlorofluoromethane 75-69-4 137.40 0.200 1.12 0.248 1.39 1 WG2422647 Dichlorodifluoromethane 75-71-8 120.92 0.200 0.989 0.581 2.87 1 WG2422647 1,1,2-Trichlorotrifluoroethane 76-13-1 187.40 0.200 1.53 ND ND 1 WG2422647 1,2-Dichlorotetrafluoroethane 76-14-2 171 0.200 1.40 ND ND 1 WG2422647 Heptane 142-82-5 100 0.200 0.818 0.589 2.41 1 WG2422647 Hexachloro-1,3-butadiene 87-68-3 261 0.630 6.73 ND ND 1 WG2422647 n-Hexane 110-54-3 86.20 0.630 2.22 0.672 2.37 1 WG2422647 Isopropylbenzene 98-82-8 120.20 0.200 0.983 ND ND 1 WG2422647 Methylene Chloride 75-09-2 84.90 0.200 0.694 0.899 3.12 1 WG2422647 Methyl Butyl Ketone 591-78-6 100 1.25 5.11 ND ND 1 WG2422647 2-Butanone (MEK)78-93-3 72.10 1.25 3.69 13.3 39.2 1 WG2422647 4-Methyl-2-pentanone (MIBK) 108-10-1 100.10 1.25 5.12 ND ND 1 WG2422647 Methyl methacrylate 80-62-6 100.12 0.200 0.819 ND ND 1 WG2422647 MTBE 1634-04-4 88.10 0.200 0.721 ND ND 1 WG2422647 Naphthalene 91-20-3 128 0.630 3.30 ND ND 1 WG2422647 2-Propanol 67-63-0 60.10 1.25 3.07 1.48 3.64 1 WG2422647 Propene 115-07-1 42.10 1.25 2.15 6.71 11.6 1 WG2422647 Styrene 100-42-5 104 0.400 1.70 ND ND 1 WG2422647 1,1,2,2-Tetrachloroethane 79-34-5 168 0.200 1.37 ND ND 1 WG2422647 Tetrachloroethylene 127-18-4 166 0.200 1.36 11.9 80.8 1 WG2422647 Tetrahydrofuran 109-99-9 72.10 0.200 0.590 0.488 1.44 1 WG2422647 Toluene 108-88-3 92.10 0.500 1.88 2.44 9.19 1 WG2422647 1,2,4-Trichlorobenzene 120-82-1 181 0.630 4.66 ND ND 1 WG2422647 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Applied GeoTech 1240902 L1810866 12/26/24 15:54 20 of 31 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Applied GeoTech 1240902 L1810866 12/26/24 16:28 20 of 31 SAMPLE RESULTS - 08 L1810866 SG-8 Collected date/time: 12/16/24 14:55 Volatile Organic Compounds (MS) by Method TO-15 CAS # Mol. Wt. RDL1 RDL2 Result Result Qualifier Dilution Batch Analyte ppbv ug/m3 ppbv ug/m3 1,1,1-Trichloroethane 71-55-6 133 0.200 1.09 ND ND 1 WG2422647 1,1,2-Trichloroethane 79-00-5 133 0.200 1.09 ND ND 1 WG2422647 Trichloroethylene 79-01-6 131 0.200 1.07 ND ND 1 WG2422647 1,2,4-Trimethylbenzene 95-63-6 120 0.200 0.982 0.613 3.01 1 WG2422647 1,3,5-Trimethylbenzene 108-67-8 120 0.200 0.982 ND ND 1 WG2422647 2,2,4-Trimethylpentane 540-84-1 114.22 0.200 0.934 0.314 1.47 1 WG2422647 Vinyl chloride 75-01-4 62.50 0.200 0.511 ND ND 1 WG2422647 Vinyl Bromide 593-60-2 106.95 0.200 0.875 ND ND 1 WG2422647 Vinyl acetate 108-05-4 86.10 0.630 2.22 2.82 9.93 1 WG2422647 Xylenes, Total 1330-20-7 106.16 0.600 2.61 2.24 9.73 1 WG2422647 m&p-Xylene 179601-23-1 106 0.400 1.73 1.46 6.33 1 WG2422647 o-Xylene 95-47-6 106 0.200 0.867 0.777 3.37 1 WG2422647 (S) 1,4-Bromofluorobenzene 460-00-4 175 60.0-140 98.3 WG2422647 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Applied GeoTech 1240902 L1810866 12/26/24 15:54 21 of 31 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Applied GeoTech 1240902 L1810866 12/26/24 16:28 21 of 31 SAMPLE RESULTS - 09 L1810866 SG-9 Collected date/time: 12/16/24 15:20 Volatile Organic Compounds (MS) by Method TO-15 CAS # Mol. Wt. RDL1 RDL2 Result Result Qualifier Dilution Batch Analyte ppbv ug/m3 ppbv ug/m3 Acetone 67-64-1 58.10 1.25 2.97 75.4 179 1 WG2422647 Allyl chloride 107-05-1 76.53 0.200 0.626 ND ND 1 WG2422647 Benzene 71-43-2 78.10 0.200 0.639 0.542 1.73 1 WG2422647 Benzyl Chloride 100-44-7 127 0.200 1.04 ND ND 1 WG2422647 Bromodichloromethane 75-27-4 164 0.200 1.34 ND ND 1 WG2422647 Bromoform 75-25-2 253 0.630 6.52 ND ND 1 WG2422647 Bromomethane 74-83-9 94.90 0.200 0.776 ND ND 1 WG2422647 1,3-Butadiene 106-99-0 54.10 2.00 4.43 ND ND 1 WG2422647 Carbon disulfide 75-15-0 76.10 0.400 1.24 ND ND 1 WG2422647 Carbon tetrachloride 56-23-5 154 0.200 1.26 ND ND 1 WG2422647 Chlorobenzene 108-90-7 113 0.200 0.924 ND ND 1 WG2422647 Chloroethane 75-00-3 64.50 0.200 0.528 ND ND 1 WG2422647 Chloroform 67-66-3 119 0.200 0.973 ND ND 1 WG2422647 Chloromethane 74-87-3 50.50 0.200 0.413 1.20 2.48 1 WG2422647 2-Chlorotoluene 95-49-8 126 0.200 1.03 ND ND 1 WG2422647 Cyclohexane 110-82-7 84.20 0.200 0.689 ND ND 1 WG2422647 Dibromochloromethane 124-48-1 208 0.200 1.70 ND ND 1 WG2422647 1,2-Dibromoethane 106-93-4 188 0.200 1.54 ND ND 1 WG2422647 1,2-Dichlorobenzene 95-50-1 147 0.200 1.20 ND ND 1 WG2422647 1,3-Dichlorobenzene 541-73-1 147 0.200 1.20 ND ND 1 WG2422647 1,4-Dichlorobenzene 106-46-7 147 0.200 1.20 ND ND 1 WG2422647 1,2-Dichloroethane 107-06-2 99 0.200 0.810 ND ND 1 WG2422647 1,1-Dichloroethane 75-34-3 98 0.200 0.802 ND ND 1 WG2422647 1,1-Dichloroethene 75-35-4 96.90 0.200 0.793 ND ND 1 WG2422647 cis-1,2-Dichloroethene 156-59-2 96.90 0.200 0.793 ND ND 1 WG2422647 trans-1,2-Dichloroethene 156-60-5 96.90 0.200 0.793 ND ND 1 WG2422647 1,2-Dichloropropane 78-87-5 113 0.200 0.924 ND ND 1 WG2422647 cis-1,3-Dichloropropene 10061-01-5 111 0.200 0.908 ND ND 1 WG2422647 trans-1,3-Dichloropropene 10061-02-6 111 0.200 0.908 ND ND 1 WG2422647 1,4-Dioxane 123-91-1 88.10 0.630 2.27 ND ND 1 WG2422647 Ethanol 64-17-5 46.10 2.50 4.71 29.5 55.6 1 WG2422647 Ethylbenzene 100-41-4 106 0.200 0.867 ND ND 1 WG2422647 4-Ethyltoluene 622-96-8 120 0.200 0.982 ND ND 1 WG2422647 Trichlorofluoromethane 75-69-4 137.40 0.200 1.12 0.243 1.37 1 WG2422647 Dichlorodifluoromethane 75-71-8 120.92 0.200 0.989 0.531 2.63 1 WG2422647 1,1,2-Trichlorotrifluoroethane 76-13-1 187.40 0.200 1.53 ND ND 1 WG2422647 1,2-Dichlorotetrafluoroethane 76-14-2 171 0.200 1.40 ND ND 1 WG2422647 Heptane 142-82-5 100 0.200 0.818 0.408 1.67 1 WG2422647 Hexachloro-1,3-butadiene 87-68-3 261 0.630 6.73 ND ND 1 WG2422647 n-Hexane 110-54-3 86.20 0.630 2.22 2.33 8.21 1 WG2422647 Isopropylbenzene 98-82-8 120.20 0.200 0.983 ND ND 1 WG2422647 Methylene Chloride 75-09-2 84.90 0.200 0.694 4.50 15.6 1 WG2422647 Methyl Butyl Ketone 591-78-6 100 1.25 5.11 ND ND 1 WG2422647 2-Butanone (MEK)78-93-3 72.10 1.25 3.69 7.50 22.1 1 WG2422647 4-Methyl-2-pentanone (MIBK) 108-10-1 100.10 1.25 5.12 ND ND 1 WG2422647 Methyl methacrylate 80-62-6 100.12 0.200 0.819 ND ND 1 WG2422647 MTBE 1634-04-4 88.10 0.200 0.721 ND ND 1 WG2422647 Naphthalene 91-20-3 128 0.630 3.30 ND ND 1 WG2422647 2-Propanol 67-63-0 60.10 1.25 3.07 4.81 11.8 1 WG2422647 Propene 115-07-1 42.10 1.25 2.15 4.60 7.92 1 WG2422647 Styrene 100-42-5 104 0.400 1.70 ND ND 1 WG2422647 1,1,2,2-Tetrachloroethane 79-34-5 168 0.200 1.37 ND ND 1 WG2422647 Tetrachloroethylene 127-18-4 166 0.200 1.36 0.514 3.49 1 WG2422647 Tetrahydrofuran 109-99-9 72.10 0.200 0.590 0.375 1.11 1 WG2422647 Toluene 108-88-3 92.10 0.500 1.88 1.06 3.99 1 WG2422647 1,2,4-Trichlorobenzene 120-82-1 181 0.630 4.66 ND ND 1 WG2422647 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Applied GeoTech 1240902 L1810866 12/26/24 15:54 22 of 31 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Applied GeoTech 1240902 L1810866 12/26/24 16:28 22 of 31 SAMPLE RESULTS - 09 L1810866 SG-9 Collected date/time: 12/16/24 15:20 Volatile Organic Compounds (MS) by Method TO-15 CAS # Mol. Wt. RDL1 RDL2 Result Result Qualifier Dilution Batch Analyte ppbv ug/m3 ppbv ug/m3 1,1,1-Trichloroethane 71-55-6 133 0.200 1.09 ND ND 1 WG2422647 1,1,2-Trichloroethane 79-00-5 133 0.200 1.09 ND ND 1 WG2422647 Trichloroethylene 79-01-6 131 0.200 1.07 ND ND 1 WG2422647 1,2,4-Trimethylbenzene 95-63-6 120 0.200 0.982 ND ND 1 WG2422647 1,3,5-Trimethylbenzene 108-67-8 120 0.200 0.982 ND ND 1 WG2422647 2,2,4-Trimethylpentane 540-84-1 114.22 0.200 0.934 0.696 3.25 1 WG2422647 Vinyl chloride 75-01-4 62.50 0.200 0.511 ND ND 1 WG2422647 Vinyl Bromide 593-60-2 106.95 0.200 0.875 ND ND 1 WG2422647 Vinyl acetate 108-05-4 86.10 0.630 2.22 1.35 4.75 1 WG2422647 Xylenes, Total 1330-20-7 106.16 0.600 2.61 ND ND 1 WG2422647 m&p-Xylene 179601-23-1 106 0.400 1.73 ND ND 1 WG2422647 o-Xylene 95-47-6 106 0.200 0.867 ND ND 1 WG2422647 (S) 1,4-Bromofluorobenzene 460-00-4 175 60.0-140 93.1 WG2422647 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Applied GeoTech 1240902 L1810866 12/26/24 15:54 23 of 31 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Applied GeoTech 1240902 L1810866 12/26/24 16:28 23 of 31 QUALITY CONTROL SUMMARYWG2422647 Volatile Organic Compounds (MS) by Method TO-15 L1810866-01,02,03,04,05,06,07,08,09 Method Blank (MB) (MB) R4161675-3 12/20/24 10:08 MB Result MB Qualifier MB MDL MB RDL Analyte ppbv ppbv ppbv Acetone U 0.520 1.25 Allyl chloride U 0.186 0.200 Benzene U 0.110 0.200 Benzyl Chloride U 0.0888 0.200 Bromodichloromethane U 0.0695 0.200 Bromoform U 0.0755 0.630 Bromomethane U 0.0938 0.200 1,3-Butadiene U 0.158 2.00 Carbon disulfide U 0.160 0.400 Carbon tetrachloride U 0.0746 0.200 Chlorobenzene U 0.118 0.200 Chloroethane U 0.110 0.200 Chloroform U 0.104 0.200 Chloromethane U 0.110 0.200 2-Chlorotoluene U 0.0787 0.200 Cyclohexane U 0.170 0.200 Dibromochloromethane U 0.0696 0.200 1,2-Dibromoethane U 0.0690 0.200 1,2-Dichlorobenzene U 0.0734 0.200 1,3-Dichlorobenzene U 0.0753 0.200 1,4-Dichlorobenzene U 0.0768 0.200 1,2-Dichloroethane U 0.0730 0.200 1,1-Dichloroethane U 0.0710 0.200 1,1-Dichloroethene U 0.0747 0.200 cis-1,2-Dichloroethene U 0.0796 0.200 trans-1,2-Dichloroethene U 0.0735 0.200 1,2-Dichloropropane U 0.0752 0.200 cis-1,3-Dichloropropene U 0.0743 0.200 trans-1,3-Dichloropropene U 0.0795 0.200 1,4-Dioxane U 0.164 0.630 Ethanol U 2.37 2.50 Ethylbenzene U 0.0778 0.200 4-Ethyltoluene U 0.0887 0.200 Trichlorofluoromethane U 0.0771 0.200 Dichlorodifluoromethane U 0.0806 0.200 1,1,2-Trichlorotrifluoroethane U 0.0751 0.200 1,2-Dichlorotetrafluoroethane U 0.0756 0.200 Heptane U 0.114 0.200 Hexachloro-1,3-butadiene U 0.0800 0.630 n-Hexane U 0.143 0.630 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Applied GeoTech 1240902 L1810866 12/26/24 15:54 24 of 31 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Applied GeoTech 1240902 L1810866 12/26/24 16:28 24 of 31 QUALITY CONTROL SUMMARYWG2422647 Volatile Organic Compounds (MS) by Method TO-15 L1810866-01,02,03,04,05,06,07,08,09 Method Blank (MB) (MB) R4161675-3 12/20/24 10:08 MB Result MB Qualifier MB MDL MB RDL Analyte ppbv ppbv ppbv Isopropylbenzene U 0.0722 0.200 Methylene Chloride U 0.169 0.200 Methyl Butyl Ketone U 0.133 1.25 2-Butanone (MEK)U 0.116 1.25 4-Methyl-2-pentanone (MIBK) U 0.106 1.25 Methyl methacrylate U 0.169 0.200 MTBE U 0.0813 0.200 Naphthalene U 0.617 0.630 2-Propanol U 0.680 1.25 Propene U 0.214 1.25 Styrene U 0.0802 0.400 1,1,2,2-Tetrachloroethane U 0.0695 0.200 Tetrachloroethylene U 0.111 0.200 Tetrahydrofuran U 0.164 0.200 Toluene U 0.130 0.500 1,2,4-Trichlorobenzene U 0.462 0.630 1,1,1-Trichloroethane U 0.0718 0.200 1,1,2-Trichloroethane U 0.0683 0.200 Trichloroethylene U 0.0680 0.200 1,2,4-Trimethylbenzene U 0.0927 0.200 1,3,5-Trimethylbenzene U 0.0853 0.200 2,2,4-Trimethylpentane U 0.0898 0.200 Vinyl chloride U 0.0826 0.200 Vinyl Bromide U 0.0749 0.200 Vinyl acetate U 0.0968 0.630 Xylenes, Total U 0.0887 0.600 m&p-Xylene U 0.174 0.400 o-Xylene U 0.0887 0.200 (S) 1,4-Bromofluorobenzene 83.9 60.0-140 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R4161675-1 12/20/24 09:11 • (LCSD) R4161675-2 12/20/24 09:40 Spike Amount LCS Result LCSD Result LCS Rec. LCSD Rec. Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits Analyte ppbv ppbv ppbv %%%%% Acetone 3.75 4.09 4.17 109 111 70.0-130 1.94 25 Allyl chloride 3.75 3.37 3.50 89.9 93.3 70.0-130 3.78 25 Benzene 3.75 3.67 3.68 97.9 98.1 70.0-130 0.272 25 Benzyl Chloride 3.75 3.35 3.38 89.3 90.1 70.0-152 0.892 25 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Applied GeoTech 1240902 L1810866 12/26/24 15:54 25 of 31 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Applied GeoTech 1240902 L1810866 12/26/24 16:28 25 of 31 QUALITY CONTROL SUMMARYWG2422647 Volatile Organic Compounds (MS) by Method TO-15 L1810866-01,02,03,04,05,06,07,08,09 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R4161675-1 12/20/24 09:11 • (LCSD) R4161675-2 12/20/24 09:40 Spike Amount LCS Result LCSD Result LCS Rec. LCSD Rec. Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits Analyte ppbv ppbv ppbv %%%%% Bromodichloromethane 3.75 3.91 3.92 104 105 70.0-130 0.255 25 Bromoform 3.75 3.94 3.88 105 103 70.0-130 1.53 25 Bromomethane 3.75 4.07 4.04 109 108 70.0-130 0.740 25 1,3-Butadiene 3.75 3.78 3.86 101 103 70.0-130 2.09 25 Carbon disulfide 7.50 7.55 7.56 101 101 70.0-130 0.132 25 Carbon tetrachloride 3.75 3.85 3.84 103 102 70.0-130 0.260 25 Chlorobenzene 3.75 3.87 3.87 103 103 70.0-130 0.000 25 Chloroethane 3.75 3.75 3.78 100 101 70.0-130 0.797 25 Chloroform 3.75 4.01 4.03 107 107 70.0-130 0.498 25 Chloromethane 3.75 3.75 3.76 100 100 70.0-130 0.266 25 2-Chlorotoluene 3.75 3.42 3.41 91.2 90.9 70.0-130 0.293 25 Cyclohexane 3.75 2.97 2.99 79.2 79.7 70.0-130 0.671 25 Dibromochloromethane 3.75 3.84 3.84 102 102 70.0-130 0.000 25 1,2-Dibromoethane 3.75 3.76 3.71 100 98.9 70.0-130 1.34 25 1,2-Dichlorobenzene 3.75 4.46 4.45 119 119 70.0-130 0.224 25 1,3-Dichlorobenzene 3.75 4.51 4.45 120 119 70.0-130 1.34 25 1,4-Dichlorobenzene 3.75 4.54 4.45 121 119 70.0-130 2.00 25 1,2-Dichloroethane 3.75 4.20 4.28 112 114 70.0-130 1.89 25 1,1-Dichloroethane 3.75 3.82 3.88 102 103 70.0-130 1.56 25 1,1-Dichloroethene 3.75 3.92 3.96 105 106 70.0-130 1.02 25 cis-1,2-Dichloroethene 3.75 3.50 3.52 93.3 93.9 70.0-130 0.570 25 trans-1,2-Dichloroethene 3.75 2.83 3.31 75.5 88.3 70.0-130 15.6 25 1,2-Dichloropropane 3.75 3.83 3.83 102 102 70.0-130 0.000 25 cis-1,3-Dichloropropene 3.75 3.08 3.11 82.1 82.9 70.0-130 0.969 25 trans-1,3-Dichloropropene 3.75 3.05 3.14 81.3 83.7 70.0-130 2.91 25 1,4-Dioxane 3.75 3.21 3.28 85.6 87.5 70.0-140 2.16 25 Ethanol 3.75 4.21 4.26 112 114 55.0-148 1.18 25 Ethylbenzene 3.75 3.27 3.27 87.2 87.2 70.0-130 0.000 25 4-Ethyltoluene 3.75 3.98 4.00 106 107 70.0-130 0.501 25 Trichlorofluoromethane 3.75 4.34 4.33 116 115 70.0-130 0.231 25 Dichlorodifluoromethane 3.75 4.24 4.25 113 113 64.0-139 0.236 25 1,1,2-Trichlorotrifluoroethane 3.75 4.20 4.21 112 112 70.0-130 0.238 25 1,2-Dichlorotetrafluoroethane 3.75 4.10 4.13 109 110 70.0-130 0.729 25 Heptane 3.75 3.74 3.81 99.7 102 70.0-130 1.85 25 Hexachloro-1,3-butadiene 3.75 4.21 4.12 112 110 70.0-151 2.16 25 n-Hexane 3.75 3.41 3.46 90.9 92.3 70.0-130 1.46 25 Isopropylbenzene 3.75 3.82 3.83 102 102 70.0-130 0.261 25 Methylene Chloride 3.75 4.06 4.16 108 111 70.0-130 2.43 25 Methyl Butyl Ketone 3.75 3.53 3.62 94.1 96.5 70.0-149 2.52 25 2-Butanone (MEK)3.75 3.52 3.49 93.9 93.1 70.0-130 0.856 25 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Applied GeoTech 1240902 L1810866 12/26/24 15:54 26 of 31 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Applied GeoTech 1240902 L1810866 12/26/24 16:28 26 of 31 QUALITY CONTROL SUMMARYWG2422647 Volatile Organic Compounds (MS) by Method TO-15 L1810866-01,02,03,04,05,06,07,08,09 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R4161675-1 12/20/24 09:11 • (LCSD) R4161675-2 12/20/24 09:40 Spike Amount LCS Result LCSD Result LCS Rec. LCSD Rec. Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits Analyte ppbv ppbv ppbv %%%%% 4-Methyl-2-pentanone (MIBK) 3.75 4.24 4.60 113 123 70.0-139 8.14 25 Methyl methacrylate 3.75 3.39 3.42 90.4 91.2 70.0-130 0.881 25 MTBE 3.75 3.34 3.36 89.1 89.6 70.0-130 0.597 25 Naphthalene 3.75 3.38 3.28 90.1 87.5 70.0-159 3.00 25 2-Propanol 3.75 3.78 3.84 101 102 70.0-139 1.57 25 Propene 3.75 3.50 3.71 93.3 98.9 64.0-144 5.83 25 Styrene 7.50 8.83 8.74 118 117 70.0-130 1.02 25 1,1,2,2-Tetrachloroethane 3.75 4.38 4.34 117 116 70.0-130 0.917 25 Tetrachloroethylene 3.75 4.09 4.11 109 110 70.0-130 0.488 25 Tetrahydrofuran 3.75 3.13 3.31 83.5 88.3 70.0-137 5.59 25 Toluene 3.75 3.33 3.41 88.8 90.9 70.0-130 2.37 25 1,2,4-Trichlorobenzene 3.75 3.34 3.27 89.1 87.2 70.0-160 2.12 25 1,1,1-Trichloroethane 3.75 3.71 3.74 98.9 99.7 70.0-130 0.805 25 1,1,2-Trichloroethane 3.75 3.85 3.86 103 103 70.0-130 0.259 25 Trichloroethylene 3.75 3.80 3.84 101 102 70.0-130 1.05 25 1,2,4-Trimethylbenzene 3.75 4.37 4.33 117 115 70.0-130 0.920 25 1,3,5-Trimethylbenzene 3.75 4.24 4.22 113 113 70.0-130 0.473 25 2,2,4-Trimethylpentane 3.75 3.66 3.71 97.6 98.9 70.0-130 1.36 25 Vinyl chloride 3.75 3.78 3.84 101 102 70.0-130 1.57 25 Vinyl Bromide 3.75 3.95 3.97 105 106 70.0-130 0.505 25 Vinyl acetate 3.75 2.93 2.93 78.1 78.1 70.0-130 0.000 25 Xylenes, Total 11.3 12.2 12.3 108 109 70.0-130 0.816 25 m&p-Xylene 7.50 8.04 8.07 107 108 70.0-130 0.372 25 o-Xylene 3.75 4.20 4.26 112 114 70.0-130 1.42 25 (S) 1,4-Bromofluorobenzene 108 108 60.0-140 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Applied GeoTech 1240902 L1810866 12/26/24 15:54 27 of 31 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Applied GeoTech 1240902 L1810866 12/26/24 16:28 27 of 31 QUALITY CONTROL SUMMARYWG2424973 Volatile Organic Compounds (MS) by Method TO-15 L1810866-05,06 Method Blank (MB) (MB) R4161926-3 12/26/24 09:49 MB Result MB Qualifier MB MDL MB RDL Analyte ppbv ppbv ppbv Tetrachloroethylene U 0.111 0.200 (S) 1,4-Bromofluorobenzene 88.8 60.0-140 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R4161926-1 12/26/24 08:52 • (LCSD) R4161926-2 12/26/24 09:21 Spike Amount LCS Result LCSD Result LCS Rec. LCSD Rec. Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits Analyte ppbv ppbv ppbv %%%%% Tetrachloroethylene 3.75 4.09 4.04 109 108 70.0-130 1.23 25 (S) 1,4-Bromofluorobenzene 104 104 60.0-140 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Applied GeoTech 1240902 L1810866 12/26/24 15:54 28 of 31 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Applied GeoTech 1240902 L1810866 12/26/24 16:28 28 of 31 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. ND Not detected at the Reporting Limit (or MDL where applicable). 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 E The analyte concentration exceeds the upper limit of the calibration range of the instrument established by the initial calibration (ICAL). 1 Cp 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Applied GeoTech 1240902 L1810866 12/26/24 15:54 29 of 31 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Applied GeoTech 1240902 L1810866 12/26/24 16:28 29 of 31 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 2 Tc 3 Ss 4 Cn 5 Sr 6 Qc 7 Gl 8 Al 9 Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Applied GeoTech 1240902 L1810866 12/26/24 15:54 30 of 31 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Applied GeoTech 1240902 L1810866 12/26/24 16:28 30 of 31