The URL can be used to link to this page

Home My WebLink About19038 - Annual VIMS Efficacy Report _Dunavant Streeti https://harthick.sharepoint.com/sites/masterfiles-1/shared documents/aaa-master projects/avalon bay (ava)/ava-001 the hub/report/report/19038 - annual vims efficacy sampling report & pour-back_dunavant street (the hub).docx Annual VIMS Efficacy Sampling Report Dunavant Street 2250 Hawkins Street Charlotte, North Carolina Brownfields Project No. 19038-15-060 H&H Job No. AVA-001 Table of Contents 1.0 Introduction ................................................................................................................ 1 2.0 Pour-Back Area Repair and Testing Activities ....................................................... 4 2.1 Vapor Barrier Repair and Smoke Testing Activities ................................................4 2.2 VIMS Influence Testing ...........................................................................................5 3.0 Sub-Slab Soil Gas Sampling ...................................................................................... 6 3.1 Sub-Slab Soil Gas Sampling Activities ....................................................................6 3.2 Sub-Slab Soil Gas Sampling Results ........................................................................8 4.0 Indoor Air Sampling ................................................................................................ 10 4.1 Indoor Air Sampling Activities ...............................................................................10 4.2 Indoor Air Sampling Results ..................................................................................11 5.0 Summary ................................................................................................................... 14 List of Tables Table 1 Sub-Slab Soil Gas Analytical Data Summary Table 2 Indoor Air Analytical Data Summary Table 3 Comparison of Indoor Air and Sub-Slab Soil Gas Analytical Data List of Figures Figure 1 Site Location Map Figure 2 Site Development Plan Figure 3 Sample Location Map ii https://harthick.sharepoint.com/sites/masterfiles-1/shared documents/aaa-master projects/avalon bay (ava)/ava-001 the hub/report/report/19038 - annual vims efficacy sampling report & pour-back_dunavant street (the hub).docx List of Appendices Appendix A VIMS Construction Drawings (VM-1 and VM-2) Appendix B Field Forms Appendix C Historical Sub-Slab Soil Gas Analytical Data Summary Appendix D Laboratory Analytical Reports Appendix E DEQ Risk Calculator Summary Pages 1 https://harthick.sharepoint.com/sites/masterfiles-1/shared documents/aaa-master projects/avalon bay (ava)/ava-001 the hub/report/report/19038 - annual vims efficacy sampling report & pour-back_dunavant street (the hub).docx Annual VIMS Efficacy Sampling Report Dunavant Street 2250 Hawkins Street Charlotte, North Carolina Brownfields Project No. 19038-15-060 H&H Job No. AVA-001 1.0 Introduction On behalf of Avalon Bay Communities, Hart & Hickman, PC (H&H) has prepared this report summarizing annual sub-slab soil gas and indoor air sampling results for the mixed use residential and commercial buildings on the Dunavant Street Brownfields property (Brownfields Project No. 19038-15-060) located at 2250 Hawkins Street in Charlotte, Mecklenburg County, North Carolina (Site). The Site redevelopment is identified as the Hub South End and consists of a multi-family residential building with attached amenity buildings, a leasing office, retail and commercial tenant spaces, an outdoor pool and courtyard, asphalt-paved parking areas, and landscaped areas. A Site location map is included as Figure 1, and a Site development plan depicting the mixed-use buildings is included as Figure 2. The buildings consist of six levels (ground floor and Floors 2 through 6) and is divided into four building sections labeled Buildings A, B, C, and D, as shown in Figure 2. Buildings A, C, and D contain multi-family residential apartments from the ground floor to Floor 6. Building B contains retail, office, and commercial tenant spaces on the ground floor and Floor 2 that are not connected through air exchange to other portions of the Site buildings. The upper floors (Floor 3 through Floor 6) of each building section are interconnected by a common hallway and contain residential apartment units. The ground floor tenant space in Building B consists of an approximately 4,900 square foot (sq ft) retail space (Area B-1) and an approximately 11,900 sq ft office space (Area B-2 and Area B-3). The retail space denoted as Area B-1 consists of ground floor space only with no second floor. Floor 2 in tenant Area B-2 and Area B-3 contains an approximately 7,900 sq ft open mezzanine area with a balcony. The Building B ground-level tenant areas were originally left without placement of concrete slabs (pour-back areas), which remained unfinished to allow for future 2 https://harthick.sharepoint.com/sites/masterfiles-1/shared documents/aaa-master projects/avalon bay (ava)/ava-001 the hub/report/report/19038 - annual vims efficacy sampling report & pour-back_dunavant street (the hub).docx tenant upfit including installation of sub-slab utilities. In 2021, tenant upfit activities were completed in an approximate 3,100 sq ft portion of Area B-2 to retrofit the space for commercial retail/restaurant space and in an approximate 400 sq ft area in the northwestern corner of Area B-1. At the issuance of this report, tenant upfit activities are underway in the approximately 3,900 sq ft area that remained unfinished in Area B-2, and in Area B-3 which totals approximately 4,700 square feet. The tenant upfit activities will be documented in a report submitted under separate cover at a later date. The completed upfit areas and the sections currently in development are shown on Figure 3. Area B-1, with the exception of the northwestern corner as discussed above, remains vacant with no concrete slab as of the issuance of this report. Annual sub-slab vapor sampling was completed in Buildings A, C, and D in December 2021 and in Building B in May 2022. The sub-slab vapor sampling was conducted in accordance with the North Carolina Department of Environmental Quality (DEQ) Division of Waste Management (DWM) Vapor Intrusion Guidance dated March 2018, the most recent versions of the U.S. Environmental Protection Agency (EPA) Region IV Laboratory Services and Applied Science Division (LSASD) Field Branches Quality System and Technical Procedures guidance, the DEQ Brownfields Program approved Vapor Intrusion Mitigation Plan (VIMP) dated May 23, 2018, and the Vapor Intrusion Mitigation Plan – Addendum for the Building B pour-back areas dated June 10, 2021. In addition to the annual sub-slab soil gas sampling, H&H completed concurrent indoor air sampling for the unfinished areas in Building B in May 2022. Prior to completing the sub-slab soil gas and indoor sampling, H&H conducted vapor barrier repair activities in the ground-level Building B pour-back tenant spaces to collect representative samples associated with a sealed system with no concrete slab. A summary of the vapor barrier repairs and testing activities, as well as the sub-slab soil gas and indoor air sampling activities completed in December 2021 and May 2022, is provided below. Engineer’s Certification The Vapor Intrusion Mitigation System (VIMS) detailed herein was designed to mitigate intrusion of subsurface vapors into the subject building from known Brownfields Property contaminants in 3 https://harthick.sharepoint.com/sites/masterfiles-1/shared documents/aaa-master projects/avalon bay (ava)/ava-001 the hub/report/report/19038 - annual vims efficacy sampling report & pour-back_dunavant street (the hub).docx a manner that is in accordance with the most recent and applicable guidelines including, but not limited to, DWM Vapor Intrusion Guidance, Interstate Technology & Regulatory Council (ITRC) guidance, and American National Standards Institute (ANSI)/American Association of Radon Scientists and Technologists (AARST) standards. The sealing professional engineer below certifies that the activities documented in this report were conducted in accordance with the vapor barrier manufacturer instructions and repairs and testing confirmed that the system remains in a condition that is fully protective of public health from known Brownfields Property contaminants. Alexis McKenzie NC PE #052740 Hart & Hickman, PC 4 https://harthick.sharepoint.com/sites/masterfiles-1/shared documents/aaa-master projects/avalon bay (ava)/ava-001 the hub/report/report/19038 - annual vims efficacy sampling report & pour-back_dunavant street (the hub).docx 2.0 Pour-Back Area Repair and Testing Activities The VIMS for Building B is comprised of a passive sub-slab depressurization system consisting of a network of sub-slab horizontal collection piping, Stego Industries, LLC, Stego-Wrap® 15-mil vapor barrier, and vertical exhaust risers. The passive VIMS is enhanced with Empire Model TV04G wind driven turbine fans located on the riser discharge above the roofline. A VIMS as- built plan is provided as VM-1 and installation details are shown in VM-2 (Appendix A). The ground floor spaces of Building B were initially left as pour-back areas. As described in the section above, upfit activities were completed in a portion of Area B-1, and a portion of Area B-2 in January and February 2021. However, the remaining tenant spaces within Building B remain unfinished with a sealed vapor barrier and no concrete slab. As such, prior to completing the sub- slab and indoor air sampling in the Building B pour-back areas, H&H performed inspections, vapor barrier repairs, smoke testing, and influence testing of the VIMS. The repair and testing activities are further discussed below and the layout of the finished and unfinished areas are depicted on the as-built drawing Sheet VM-1 (Appendix A). 2.1 Vapor Barrier Repair and Smoke Testing Activities In April 2022, H&H conducted a visual inspection of the pour-back areas within Building B and identified select areas of vapor barrier that required additional sealing. Minor damage to the vapor barrier and improperly sealed areas, particularly around the edges at the ribbon slab, were discovered during inspection activities. H&H utilized Stego Industries, LLC, Stego® Tape and Stego® Mastic to complete repairs to damaged and/or unsealed portions of the vapor barrier within the pour-back areas. A copy of the completed inspection checklist is included in Appendix B. After completion of initial repairs to the vapor barrier based on the visual inspection, H&H conducted a smoke test of each area to further identify areas where the barrier was not fully sealed. Smoke testing activities included the introduction of smoke to the gravel layer below the vapor barrier using the existing monitoring points. H&H then completed an inspection to visually identify additional potential breaches in the vapor barrier. Areas where smoke was observed were 5 https://harthick.sharepoint.com/sites/masterfiles-1/shared documents/aaa-master projects/avalon bay (ava)/ava-001 the hub/report/report/19038 - annual vims efficacy sampling report & pour-back_dunavant street (the hub).docx sealed as described above and smoke testing continued until holes, seams, and penetrations, etc. were considered adequately sealed and passed the smoke tests. 2.2 VIMS Influence Testing On April 7, 2022, following the smoke testing activities, H&H completed influence testing to further evaluate the vapor barrier seal. DEQ considers 4 Pascals (Pa), or 0.016-inches of water column (in-WC) differential pressure the minimum vacuum needed for an active depressurization system to effectively treat potential structural vapor intrusion. To accomplish the influence testing, H&H connected a shop vacuum with a static pressure of approximately 70 in-WC to the vertical riser piping at the roof to represent conditions with an active depressurization system. Differential pressure measurements were collected at each vacuum monitoring point located in the pour-back areas using a Dwyer series 475 Mark III Digital manometer capable of measuring 0.001 in-WC or 0.25 Pa to establish baseline conditions. During the initial influence test completed on April 7, 2022, the monitoring point MP-13 was observed to be blocked and a vacuum reading was not collected. On April 20, 2022, an additional influence test was completed at the F-15 riser location (Appendix A) after removing the debris in monitoring point MP-13. Results of the influence tests indicated sub-slab vacuum measured at the monitoring points ranged from 0.017 in-WC to 0.146 in-WC in Building B, which demonstrates sufficient vacuum can be achieved below the slab after future upfit activities are completed. The locations of monitoring points and risers are shown on the as-built drawings in Appendix A. A tabular summary of the pilot test field data is included in Appendix B. 6 https://harthick.sharepoint.com/sites/masterfiles-1/shared documents/aaa-master projects/avalon bay (ava)/ava-001 the hub/report/report/19038 - annual vims efficacy sampling report & pour-back_dunavant street (the hub).docx 3.0 Sub-Slab Soil Gas Sampling H&H collected ten (10) sub-slab soil gas samples for laboratory analysis to evaluate efficacy of the VIMS and the potential for constituents of concern to accumulate beneath the concrete slab at concentrations that pose risks of potential structural vapor intrusion into the existing Site buildings. Sub-slab soil gas samples were collected on December 29, 2021, from the following vacuum monitoring points (MP): • MP-15 and MP-18 located within Building A; • MP-4 and MP-7 located within Building C; and • MP-1 and MP-6 located within Building D. Following completion of repairs to the pour-back area in Building B, the remaining sub-slab soil gas samples were collected on May 11, 2022, from the following vacuum monitoring points: • MP-9, MP-10, MP-12, and MP-14 located within Building B. It should be noted that MP-10 was added as a sample location for comparison purposes to the indoor air sample required in the central portion of Building B. One duplicate soil gas sample was also collected during each sampling event for quality assurance/quality control (QA/QC) purposes at the MP-6 and MP-14 monitoring point locations and submitted for the same analysis as the parent sample. Note that each sample name is identified by an “SS” designation and the corresponding vacuum monitoring point (“MP”) where the sample was collected. 3.1 Sub-Slab Soil Gas Sampling Activities At each sample location, a temporary expandable plug with a quick connect sampling port was placed within the monitoring point to create an air-tight seal. Teflon sample tubing was then secured to the sampling port and connected to an airflow regulator and laboratory supplied 7 https://harthick.sharepoint.com/sites/masterfiles-1/shared documents/aaa-master projects/avalon bay (ava)/ava-001 the hub/report/report/19038 - annual vims efficacy sampling report & pour-back_dunavant street (the hub).docx batch-certified 1.4-liter stainless steel Summa canister. The air flow regulator was preset by the laboratory to collect a soil gas sample at a flow rate of approximately 100 milliliters per minute. Prior to sample collection, H&H conducted a leak test at each monitoring point by placing a shroud around the monitoring point and sampling train including the Summa canister. The air within the shroud was flooded with helium gas and concentrations were measured with a calibrated helium detector and maintained at approximately 10 to 15% concentration of helium. A Gilian GilAir-3 pump was connected to the sample tubing outside of the shroud and used to purge a minimum of approximately three volumes (monitoring point and sample train) of soil gas into a Tedlar® bag at each sampling point. The helium gas detector was used to measure helium concentrations within the Tedlar® bag sample to confirm helium concentrations in the sample were less than 10% of that measured within the shroud. Results of the helium leak checks indicated that helium was not detected in the purge air thus indicating that short-circuiting at the monitoring points or within the sampling train were not present. Sub-slab soil gas sample field forms completed by sampling personnel for each event are included in Appendix B. Following a successful leak check, the air flow regulators were opened to allow collection of the monitoring point soil gas samples. Vacuum in the Summa canisters was monitored during the sampling event to ensure adequate sample volume was collected at each monitoring point location. The vacuum pressure in each Summa canister upon completion of the sampling event was between 4 and 5 inches of mercury. Upon completion of sample collection, the air flow regulator was closed and disconnected from the Summa canister. The canisters were labeled with the sample identification, beginning and ending times and pressures measurements, and the requested analysis. The canisters were then placed in laboratory supplied shipping containers and delivered to Waypoint Analytical (Waypoint) under standard chain of custody protocols for analysis of volatile organic compounds (VOCs) by EPA Method TO-15. Upon receipt of the samples, the laboratory recorded the final received vacuum pressure for each Summa canister. In addition, H&H requested a Level II QA/QC data package from the laboratory and the laboratory reported values to the laboratory-specified method detection limits using J-flags. 8 https://harthick.sharepoint.com/sites/masterfiles-1/shared documents/aaa-master projects/avalon bay (ava)/ava-001 the hub/report/report/19038 - annual vims efficacy sampling report & pour-back_dunavant street (the hub).docx 3.2 Sub-Slab Soil Gas Sampling Results A tabular summary of the monitoring point sub-slab soil gas analytical results is provided in Table 1. The sample laboratory analytical results were compared to the DEQ DWM Residential Vapor Intrusion Sub-Slab and Exterior Soil Gas Screening Levels (SGSLs) dated July 2022. For comparison, a tabular summary which also includes the October and December 2019 pre- occupancy and December 2020 post-occupancy sub-slab soil gas sample data is included in Appendix C. The laboratory analytical reports with chain of custody record are provided as Appendix D. The December 2021 and May 2022 sub-slab soil gas sample analytical results indicated that compounds were detected at concentrations above laboratory method detection limits in each sample, but below the DEQ DWM Residential SGSLs, with the exception of naphthalene. Naphthalene was detected at concentrations between 4.05 and 4.89 micrograms per cubic meter (µg/m3), which is above the DEQ DWM Residential SGSL of 2.8 µg/m3, in the samples collected in December 2021 from Buildings A, C, and D. No compounds were detected above DEQ DWM Residential SGSLs in any of the May 2022 sub-slab soil gas samples collected from Building B. No other compounds were detected above the DEQ DWM Residential SGSLs in sub-slab soil gas samples collected from Buildings A, B, C, and/or D. The DEQ DWM Vapor Intrusion SGSLs are very conservative and based on a target carcinogenic risk (TCR) for potential carcinogenic risks of 1 x 10-6 and a non-carcinogenic hazard quotient (HQ) of 0.2 for potential non-carcinogenic risks. The DEQ and EPA acceptable risk level for potential carcinogenic risks is a cumulative lifetime incremental cancer risk (LICR) of 1 x 10-4 or less and the acceptable level for non-carcinogenic risks is a cumulative hazard index (HI) of 1.0 or less. Although the only compound detected at concentrations above the DEQ DWM Residential SGLS was naphthalene in the December 2021 sampling event from samples collected in Buildings A, C, and D, H&H utilized the DEQ Risk Calculator (July 2022) to confirm that cumulative risks did not indicate a potential for structural vapor intrusion at unacceptable levels. Because residences are present on either the ground floor or the upper floors of each building section, H&H entered concentrations of detected compounds from each sub-slab soil gas sample into the DEQ Risk 9 https://harthick.sharepoint.com/sites/masterfiles-1/shared documents/aaa-master projects/avalon bay (ava)/ava-001 the hub/report/report/19038 - annual vims efficacy sampling report & pour-back_dunavant street (the hub).docx Calculator based on a conservative residential use scenario to evaluate potential vapor intrusion risks in each area of the building. A summary of the risk calculator results is provided in Table 1, and copies of the completed risk calculators are provided in Appendix E. As shown in Table 1, results of risk calculations indicate that the cumulative LICR (range from 0.0 to 2.4 x 10-6) and HI values (range from 0.0032 to 0.061) for each area of the building are well below the DEQ and EPA acceptable cumulative risk levels of 1 x 10-4 and 1.0, respectively. Therefore, the risk calculator results confirm that VOC concentrations detected in sub-slab soil gas samples do not pose a potential vapor intrusion risk at unacceptable levels within any of the four building sections (Buildings A, B, C, and/or D). 10 https://harthick.sharepoint.com/sites/masterfiles-1/shared documents/aaa-master projects/avalon bay (ava)/ava-001 the hub/report/report/19038 - annual vims efficacy sampling report & pour-back_dunavant street (the hub).docx 4.0 Indoor Air Sampling In accordance with the Vapor Intrusion Mitigation Plan – Addendum for the Building B pour-back areas, H&H collected three indoor air samples for laboratory analysis to further evaluate the potential for a completed vapor intrusion pathway into Building B. The indoor air samples were collected on May 11, 2022, from representative ground floor areas of Building B, which will be used for retail, office, and/or commercial purposes. The sample locations are shown on Figure 3. 4.1 Indoor Air Sampling Activities The indoor air samples were collected using individually-certified, 6-liter stainless steel Summa sample canisters connected to in-line flow controllers with a vacuum gauge. The flow controllers were set by the laboratory to allow for collection of the samples over an 8-hour period, and the canisters were positioned so that the sample intake point was positioned approximately 3 to 5 feet above grade (typical breathing zone height). In addition, one background ambient air sample was collected upwind of the Site building, as determined on the day of the sampling event based on the prevailing wind direction. The locations of the indoor air samples and background ambient air sample are shown in Figure 3. During the sampling activities, indoor/outdoor air pressure differential were measured for the building near the start, middle, and end of the 8-hour sampling period using a manometer sensitive to 0.001 inches of water. In addition, Site-specific weather conditions, including exterior wind speed, exterior wind direction, indoor/outdoor temperature, barometric pressure, and precipitation, were recorded near the start, middle, and end of the sampling period. Prior to and after the indoor and background ambient air samples were collected, vacuum in the canisters was measured using a laboratory-supplied vacuum gauge and recorded by sampling personnel. Vacuum within the sample canisters was not allowed to reach 0 inches of mercury, and sampling was considered complete with sample canister vacuum readings measured between 5 and 10 inches of mercury. The starting and ending vacuum in each canister was recorded by sampling personnel on the sample chain of custody. The sample canisters were labeled, packaged 11 https://harthick.sharepoint.com/sites/masterfiles-1/shared documents/aaa-master projects/avalon bay (ava)/ava-001 the hub/report/report/19038 - annual vims efficacy sampling report & pour-back_dunavant street (the hub).docx in a laboratory-provided container, and shipped under standard chain of custody protocols to Waypoint for analysis of a select list of VOCs by TO-15. The target analyte list was limited to VOCs detected above method detection limits in the sub-slab soil gas samples collected during the May 2022 sampling event. Field forms associated with the indoor air sampling events are provided in Appendix B. 4.2 Indoor Air Sampling Results A tabular summary of the indoor air analytical results is provided in Table 2. As the lower-level (ground floor) portions of Building B are to be used for retail, office, and/or commercial uses and the upper-levels of Building B are to be used for residential use, the laboratory analytical results were compared to the DEQ DWM Residential and Non-Residential Vapor Intrusion Indoor Air Screening Levels (IASLs) dated July 2022. The laboratory analytical report with chain of custody record is provided as Appendix D. The indoor air sample analytical results indicated that several compounds were detected at concentrations above laboratory method detection limits in each sample. The following compounds were detected at concentrations exceeding the DEQ DWM Residential and/or Non- Residential IASLs: • Benzene was detected in the parent and duplicate sample IA-B-1/IA-B-Dup and IA-B-2 at estimated (J-flag) concentrations ranging from 0.412 to 0.418 µg/m3, which are slightly above the DEQ DWM Residential IASL of 0.36 µg/m3. • Chloroform was detected in IA-B-2 and IA-B-3 at estimated concentrations of 0.615 and 0.576 µg/m3, respectively, which are slightly above the DEQ DWM Residential and Non- Residential IASLs of 0.12 and 0.53 µg/m3, respectively. • Ethyl acetate was detected in IA-B-2 (52.4 µg/m3) and IA-B-3 (53.7 µg/m3) at concentrations exceeding the DEQ DWM Residential IASL of 15 µg/m3 but below the DEQ DWM Non-Residential IASL of 61 µg/m3. 12 https://harthick.sharepoint.com/sites/masterfiles-1/shared documents/aaa-master projects/avalon bay (ava)/ava-001 the hub/report/report/19038 - annual vims efficacy sampling report & pour-back_dunavant street (the hub).docx • Isopropanol was detected in IA-B-1/IA-B-Dup (61.1 to 62.3 µg/m3), which exceeds the DEQ DWM Residential IASL of 42 µg/m3. In addition, isopropanol was detected in IA- B-2 and IA-B-3 at concentrations of 770 and 1,060 µg/m3, respectively, which exceed the DEQ DWM Residential IASL and Non-Residential IASL of 180 µg/m3. • Chlorinated solvents tetrachloroethene (PCE) and trichloroethene (TCE) were detected at concentrations of 93.6 and 1.34 µg/m3, respectively, in the background ambient air sample, which exceed the DEQ DWM Residential IASLs and the DEQ DWM Non-Residential IASL (PCE only). However, PCE and TCE were either not detected or detected at estimated concentrations well below applicable DEQ DWM IASLs in indoor air samples collected within Building B. A tabular summary of the concurrent sub-slab soil gas concentrations compared to the indoor air sample analytical results for Building B is included as Table 3. As shown in the table, the highest detected concentration of isopropanol in the sub-slab soil gas of Building B (18.7 µg/m3) is significantly lower than the detected concentrations in indoor air samples collected from within Building B (indoor air concentrations ranging from 61.1 to 1,060 µg/m3). Therefore, the isopropanol concentrations associated with indoor air sample results are likely attributable to a fugitive emission (i.e., above-slab) indoor air source. Other compounds, such as acetone and ethyl acetate, were also detected at significantly higher concentrations within the indoor air samples when compared to the concurrent sub-slab gas samples, further indicating that a potential for fugitive emissions and/or indoor air sources are present. The DEQ DWM Vapor Intrusion IASLs are very conservative and based on a TCR for potential carcinogenic risks of 1 x 10-6 and a non-carcinogenic HQ of 0.2 for potential non-carcinogenic risks. The DEQ and EPA acceptable risk level for potential carcinogenic risks is a cumulative LICR of 1 x 10-4 or less and the acceptable level for non-carcinogenic risks is a cumulative HI of 1.0 or less. 13 https://harthick.sharepoint.com/sites/masterfiles-1/shared documents/aaa-master projects/avalon bay (ava)/ava-001 the hub/report/report/19038 - annual vims efficacy sampling report & pour-back_dunavant street (the hub).docx H&H utilized the DEQ Risk Calculator (July 2022) to calculate potential risks based on the indoor air samples. Because residences are present on the upper-levels of each building section, H&H entered concentrations of detected compounds for each indoor air sample into the DEQ Risk Calculator based on a residential use scenario to conservatively evaluate potential vapor intrusion risks in each area of the building, as well as a non-residential use scenario for the retail, office, and/or commercial spaces on the lower-level. A summary of the risk calculator results is provided in Table 2, and copies of the completed risk calculators are provided in Appendix D. The risk calculator results for indoor air samples IA-B-1, IA-B-2, and IA-B-3 associated with Building B are shown in the table below. The unmodified results include isopropanol concentrations and the modified results do not include isopropanol concentrations as the isopropanol concentrations are likely attributed to an indoor air source and account for a significant portion of the non-carcinogenic risk calculation, as summarized below. As indicated above, the unmodified risk calculations indicate an exceedance of non-carcinogenic risk (HI greater than 1.0) for portions of Building B when isopropanol which has been determined to be attributable to above slab sources) is included. However, modified risk calculations (i.e., above slab contributions of isopropanol concentrations are excluded) indicate acceptable non- carcinogenic risk levels (HI less than 1.0) for both residential and non-residential uses for Building B indicating that potential risks associated with vapor intrusion are acceptable. Sample ID Residential Non-Residential LICR HI LICR HI IA-B-1 Unmodified 1.7 x 10-6 0.52 3.8 x 10-7 0.12 Modified 1.7 x 10-6 0.22 3.8 x 10-7 0.052 IA-B-2 Unmodified 6.7 x 10-6 4.5 1.5 x 10-6 1.1 Modified 6.7 x 10-6 0.81 1.5 x 10-6 0.19 IA-B-3 Unmodified 5.1 x 10-6 5.9 1.2 x 10-6 1.4 Modified 5.1 x 10-6 0.80 1.2 x 10-6 0.19 14 https://harthick.sharepoint.com/sites/masterfiles-1/shared documents/aaa-master projects/avalon bay (ava)/ava-001 the hub/report/report/19038 - annual vims efficacy sampling report & pour-back_dunavant street (the hub).docx 5.0 Summary In accordance with the DEQ-approved VIMP and the Building B VIMP Addendum, H&H has completed annual sub-slab soil gas and indoor air sampling at the Dunavant Street Brownfields Site. A brief summary of the sampling and results are provided below. • Prior to the sub-slab and indoor air sampling events in Building B, H&H performed vapor barrier repairs in the unfinished tenant spaces. H&H completed smoke testing to identify any remaining areas which had not been sealed after the initial visual inspection, followed by influence testing to evaluate the seal of the system. Based on results of the inspections and testing completed on the repaired vapor barrier, the vapor barrier was repaired and a completed system was present during the sampling activities. • H&H collected 10 sub-slab soil gas samples in December 2021 and May 2022 for laboratory analysis from the four building sections (Building A, B, C, and D) to evaluate continued efficacy of the VIMS and evaluate the potential for accumulation of compounds beneath the slab at concentrations that pose a potential for structural vapor intrusion into the existing Site building at unacceptable levels. Results of the risk evaluation indicated that VOC concentrations detected within sub-slab soil gas do not pose a potential vapor intrusion risk at unacceptable levels within any of the four building sections (Buildings A, B, C, and/or D). • H&H collected three indoor air samples in May 2022 for laboratory analysis to further evaluate the potential for a completed vapor intrusion pathway into Building B. After additional review of VOC concentrations observed in sub-slab soil gas samples and indoor air samples within Building B, it was determined that a likely fugitive emission source was contributing to elevated isopropanol concentrations within indoor air. Therefore, using a modified risk evaluation, risk calculations indicated acceptable risk levels under residential and non-residential use scenarios within Building B. 15 https://harthick.sharepoint.com/sites/masterfiles-1/shared documents/aaa-master projects/avalon bay (ava)/ava-001 the hub/report/report/19038 - annual vims efficacy sampling report & pour-back_dunavant street (the hub).docx Based on the results of the December 2021 and May 2022 indoor air and sub-slab sampling events, no further sampling is recommended at this Site in accordance with the DEQ-approved VIMP. However, DEQ Brownfields has requested that one additional sub-slab soil sampling event be completed for the Building B portion of the Site following completion of upfit activities in all the remaining retail areas. In accordance with the DEQ-approved VIMP, after all of the ground floor spaces in Building B has been upfit, sub-slab samples will be collected from monitoring points MP-9, MP-10, MP-12, and MP-14. A report documenting completion of the final upfit area and the sub-slab sampling event with be submitted under separate cover. As of the issuance of this report, tenant upfit activities are underway in the unfinished portion of Area B-2 and in Area B-3. The tenant upfit activities will be documented in a report submitted under separate cover. Upfit activities within remaining pour-back tenant spaces in Area B-1 is planned for completion in the future, after which the final sub-slab sampling event discussed above will be completed. A North Carolina Professional Engineer will provide oversight and complete inspections during remaining upfit activities within Building B. Documentation of the tenant upfit activities will be submitted under separate cover as each space is completed. Table 1Sub-Slab Soil-Gas Analytical Data Summary Dunavant StreetCharlotte, North CarolinaBrownfields Project No. 19038-15-060H&H Project No. AVA-001Sample IDSS-MP-15 SS-MP-18 SS-MP-9 SS-MP-10SS-MP-4 SS-MP-7 SS-MP-1Sample Date12/29/2021 12/29/2021 5/11/2022 5/11/2022 5/11/202212/29/2021 12/29/2021 12/29/2021UnitsVOCs (EPA TO-15)Acetone24.211.07.73<0.80859923.224.612.611.39.5642.337.3NEBenzene0.364 J 0.313 J 0.709 J<0.2930.537 J 0.441 J 0.466 J 0.323 J 0.387 J 0.955 J 0.553 J 0.454 J122-Butanone (MEK)2.632.96 1.40 J 1894.562.853.228.507.661.973.313.1035,000Carbon Disulfide1.31 J 0.610 J 0.972 JB<0.243 <0.06081.81 JB 2.97 JB 0.710 J 1.22 J 1.17 J 1.01 J 0.732 J4,900Carbon Tetrachloride0.698 J 0.717 J<0.155 <0.621 <0.155 <0.155 <0.155 <0.155 <0.155 <0.155 <0.155 <0.15516Chloroform<0.08640.757 J<0.0864 <0.3450.757 J 0.454 J 0.620 J<0.08640.718 J 1.26 J 0.469 J 0.439 J4.1Chloroethane<0.164 <0.164 <0.164 <0.656 <0.164 <0.164 <0.164 <0.164 <0.1640.860 J<0.164 <0.16428,000Chloromethane<0.0673 <0.0673 <0.06730.809 J 0.454 J 0.368 J 0.351 J<0.0673 <0.0673 <0.0673 <0.0673 <0.0673630Cyclohexane6.199.54 1.98 J<0.6461.81 J 1.44 J 1.36 J 5.833.80<0.1614.56<0.16142,0001,3-Dichlorobenzene<0.174 <0.1740.619 J 2.43 J 30.033.033.7<0.174 <0.174 <0.174 <0.174 <0.174NE1,2-Dichloroethane<0.129 <0.129 <0.129 <0.516 <0.129 <0.129 <0.129 <0.129 <0.1291.57 J<0.129 <0.1293.6Dichlorodifluoromethane (Freon 12)3.293.472.90 3.14 J 4.602.832.903.533.563.513.693.45700Ethyl Acetate<0.136 <0.136 <0.136 <0.5441.86<0.136 <0.136 <0.136 <0.136 <0.1365.254.90490Ethylbenzene0.782 J 4.23<0.106 <0.4240.382 J 0.352 J 0.434 J 0.356 J 0.677 J 2.38 0.643 J 0.643 J374-Ethyltoluene1.25 J<0.128 <0.128 <0.512 <0.128 <0.128 <0.128 <0.128 <0.1281.01 J<0.128 <0.128NEHeptane<0.143 <0.143 <0.143 <0.5720.545 J<0.1430.381 J<0.143 <0.1431.00 J<0.143 <0.1432,800Hexane0.916 J 0.412 J<0.0472 <0.189 <0.0472 <0.0472 <0.04720.395 J 0.317 J 0.659 J<0.0472 <0.04724,9002-Hexanone (MBK)3.98<0.285 <0.285 <1.14 <0.285 <0.285 <0.285 <0.285 <0.285 <0.2854.094.03210Isopropanol15.9 2.64 J 2.31 J<0.55718.7 1.06 J 1.53 J 3.43 J 6.93 4.62 J 55.654.01,400Methylene Chloride1.52 J 0.854 J 0.955 J<1.956.39 1.55 J 1.47 J 0.702 J 1.84 1.01 J 1.18 J 1.04 J3,4004-Methyl-2-pentanone (MIBK)2.02 J<0.121 <0.121 <0.484 <0.121 <0.121 <0.121 <0.121 <0.121 <0.1212.262.1021,000Naphthalene4.604.89<0.183 <0.733 <0.1830.477 J 0.435 J4.134.054.104.414.482.8Styrene0.886 J<0.124 <0.124 <0.496 <0.124 <0.124 <0.124 <0.124 <0.124 <0.1240.520 J 0.562 J7,000Tetrachloroethene0.570 J<0.1810.814 J<0.726 <0.181 <0.1812.16 J<0.1811.78 J 0.583 J<0.181 <0.181280Tetrahydrofuran2.849.652.79 1,410 3.192.722.8152.212552.91.52 1.04 J14,000Toluene2.402.49 0.746 J 1.37 J 2.60 1.53 J 1.57 J 1.53 J 2.745.292.432.1535,000Trichloroethene<0.199 <0.199 <0.199 <0.796 <0.199 <0.1990.580 J 0.613 J<0.199 <0.199 <0.199 <0.19914Trichlorofluoromethane (Freon 11)1.76 J 2.04 J 1.96 J 2.29 J 5.05 2.03 J 2.02 J 2.97 2.04 J 2.05 J 2.19 J 2.14 JNE1,1,2-Trichloro-1,2,2-trifluoroethane (Freon 113)0.766 J 0.720 J<0.561 <2.24 <0.0877 <0.561 <0.5610.697 J 0.782 J<0.5610.828 J 0.759 J35,0001,2,4-Trimethylbenzene6.58 1.17 J 0.516 J<0.4400.767 J 0.993 J 1.08 J 0.816 J 1.27 J 3.59 1.65 J 1.42 J4201,3,5-Trimethylbenzene2.42 J<0.236 <0.236 <0.944 <0.236 <0.236 <0.236 <0.236 <0.2360.782 J 0.403 J<0.236 420m&p-Xylene3.23 J 17.5 0.899 J<0.8681.61 J 1.26 J 1.74 J 1.35 J 2.54 J 8.10 2.41 J 2.25 J700o-Xylene1.74 J 3.08 0.412 J<0.6280.647 J 0.617 J 0.790 J 0.564 J 1.05 J 2.72 1.06 J 0.925 J700DEQ Risk Calculator (2)Acceptable Risk LevelsLICR (Resident)1.8 x 10-62.1 x 10-66.2 x 10-80.0 x 1002.4 x 10-71.6 x 10-61.7 x 10-62.4 x 10-6< 1 x 10-4Non-Carcinogenic HI (Resident) 0.058 0.056 0.0032 0.023 0.00710.052 0.046 0.055< 1.0Notes:1) North Carolina Department of Environmental Quality (DEQ) Division of Waste Management (DWM) Vapor Intrusion Sub-Slab and Exterior Soil Gas Screening Levels (SGSLs) (July 2022) based upon TCR = 1 x 10 -6 and THQ = 0.2.2)DEQ Risk Calculator dated July 2022 were used to calculate the risks for the samples collected in December 2021 and May 2022.Compound concentrations are reported in micrograms per cubic meter (µg/m3)Compound concentrations are reported to the laboratoy method detection limit.Only those compounds detected in at least one sample are shown in the table above.Laboratory analytical method shown in parentheses.Bold indicates concentration exceeds the Residential SGSL.LICR = Lifetime Incremental Carcinogenic Risk; HI = Hazard Index; TCR = Total Carcinogenic Risk; THQ = Total Hazard QuotientCumulative LICR and HI compared to DEQ and EPA acceptable risk levels for carcinogenic and non-carcinogenic risks. VOCs = Volatile Organic Compounds; NA = Not Analyzed ; NE = Not Established; EPA = Environmental Protection AgencyJ = compound was detected above the laboratory method detection limit, but below the laboratory reporting limit resulting in a laboratory estimated value.B = compound was detected in the associated method blank.Building SectionBuilding BBuilding A5/11/202212/29/20214.2 x 10-71.8 x 10-60.0180.061Building CBuilding DSS-MP-6 / MP-DUP - 12/29/2021µg/m3SS-MP-12 SS-MP-14 / SS-MP-DUPResidential SGSL1https://harthick.sharepoint.com/sites/MasterFiles-1/Shared Documents/AAA-Master Projects/Avalon Bay (AVA)/AVA-001 The Hub/Report/Tables/Tables 1 to 3, App. C - VIMP Summary Tables10/19/2022Table 1 (Page 1 of 1)Hart & Hickman, PC Table 2Indoor Air Analytical Data SummaryBuilding BDunavant StreetCharlotte, North CarolinaBrownfields Project No.19038-15-060H&H Job No. Project AVA.001Sample LocationBackgroundSample IDIA-B-2 IA-B-3 IA-BKGDate5/11/2022 5/11/2022 5/11/2022UnitsVOCs (EPA TO-15)Acetone 561 567 5,000 4,970 7.72NENEBenzene0.418 J 0.412 J 0.418 J<0.07330.332 J0.361.62-Butanone (MEK) 3.37 3.24<0.2244.08 0.979 J1,0004,400Carbon Disulfide<0.0608 <0.0608 <0.0608 <0.06080.604 J150610Chloroform<0.0864 <0.08640.615 J0.576 J<0.08640.120.53Chloromethane0.624 J 0.578 J 0.613 J<0.06730.574 J1979Cyclohexane<0.161 <0.161 <0.1610.482 J<0.1611,3005,3001,3-Dichlorobenzene<0.174 <0.174 <0.174 <0.174 <0.174NENEDichlorodifluoromethane 2.49 2.64 2.50 2.49 2.40 J2188Ethyl Acetate 7.25 7.0052.4 53.7<0.1361561Ethylbenzene 0.360 J<0.1060.608 J 0.482 J<0.1061.14.9Heptane 0.656 J 0.738 J 1.23 J 0.959 J<0.14383350Isopropanol61.1 62.3 7701,0603.54 J42180Methylene Chloride 1.23 J 1.41 J<0.489 <0.4890.868 J100530Naphthalene<0.183 <0.183 <0.183 <0.183 <0.1830.0830.36Tetrachloroethene 1.30 JB 2.09 JB<0.181 <0.18193.68.335Tetrahydrofuran 0.655 J 0.640 J<0.107 <0.107 <0.1074201,800Toluene 1.51 J 1.45 J 5.62 7.56 0.923 J1,0004,400Trichloroethene<0.199 <0.199 <0.199 <0.1991.34 J0.421.8Trichlorofluoromethane 1.78 J 2.17 J<0.130 <0.1301.37 JNENE1,2,4-Trimethylbenzene<0.110 <0.110 <0.110 <0.110 <0.1101353m&p-Xylene 1.14 J 1.01 J 2.07 J 1.85 J 0.703 J2188o-Xylene 0.595 J 0.556 J 1.37 J 1.11 J<0.1572188DEQ Risk Calculator(2)Residential LICR6.7 x 10-65.1 x 10-6-Non-Residential LICR1.5 x 10-61.2 x 10-6-Residential HI4.5 (0.81*) 5.9 (0.80*) -Non-Residential HI1.1 (0.19*) 1.4 (0.19*) -Notes:1) NC Department of Environmental Quality (DEQ) Division of Waste Management (DWM) Indoor Air Screening Levels (IASLs) dated July 2022 and based upon TCR = 1 x 10-6 and THQ = 0.2.2) NC DEQ DWM Cumulative Risk Calculator dated July 2022.* Modified HI shown in parentheses, which excludes isopropanol concentrations due to elevated indoor air concentrations when compared to sub-slab soil gas concentrations.Compound concentrations are reported in micrograms per cubic meter (μg/m3).Compound concentrations are reported to the laboratory method detection limits.Only those compounds detected in the sub-slab soil gas samples are shown in the table above.Laboratory analytical methods are shown in parentheses.Bold indicates compound concentration exceeds Residential IASLs.Underline indicates compound concentration exceeds Non-Residential IASLs.VOCs = Volatile Organic Compounds; NE = Not Established.TCR = Target Cancer Risk; THQ = Target Hazard Quotient.LICR = Lifetime Incremental Carcinogenic Risk; HI = Hazard IndexCumulative LICR and HI calculated using the worst-case scenario and compared to DEQ and EPA acceptable risk levels for carcinogenic and non-carcinogenic risks.J = Compound was detected above the laboratory method detection limit but below the laboratory reporting limit resulting in a laboratory estimated concentration.B = Compound was detected in the associated method blank.Acceptable Risk Levels1.7 x 10-60.52 (0.22*)3.8 x 10-70.12 (0.052*)<1 x 10-4 <1.0µg/m3Building BResidentialIASLs (1)Non-ResidentialIASLs (1)IA-B-1 / IA-B-Dup5/11/2022https://harthick.sharepoint.com/sites/MasterFiles-1/Shared Documents/AAA-Master Projects/Avalon Bay (AVA)/AVA-001 The Hub/Report/Tables/Tables 1 to 3, App. C - VIMP Summary Tables.xlsx9/29/2022Table 2 (Page 1 of 1) Hart & Hickman, PC Table 3Comparison of Indoor Air and Sub-Slab Soil Gas Analytical DataDunavant StreetCharlotte, North CarolinaBrownfields Project No. 19038-15-060H&H Project No. AVA-001Building B AreaSample IDSS-MP-9 IA-B-3 SS-MP-10 SS-MP-12 IA-B-2Sample Date5/11/2022 5/11/2022 5/11/2022 5/11/2022 5/11/2022UnitsVOCs (EPA TO-15)Acetone 7.73 4,970<0.808599 5,000 23.2 24.6 561 567Benzene 0.709 J<0.0733 <0.2930.537 J0.418 J0.441 J 0.466 J0.418 J 0.412 J2-Butanone (MEK) 1.40 J 4.08 189 4.56<0.2242.85 3.22 3.37 3.24Carbon Disulfide 0.972 JB<0.0608 <0.243 <0.0608 <0.06081.81 JB 2.97 JB<0.0608 <0.0608Chloroform<0.08640.576 J<0.3450.757 J0.615 J0.454 J 0.620 J<0.0864 <0.0864Chloromethane<0.0673 <0.06730.809 J 0.454 J 0.613 J 0.368 J 0.351 J 0.624 J 0.578 JCyclohexane 1.98 J 0.482 J<0.6461.81 J<0.1611.44 J 1.36 J<0.161 <0.1611,3-Dichlorobenzene 0.619 J<0.1742.43 J 30.0<0.17433.0 33.7<0.174 <0.174Dichlorodifluoromethane (Freon 12) 2.90 2.49 3.14 J 4.60 2.50 2.83 2.90 2.49 2.64Ethyl Acetate<0.13653.7<0.5441.86 52.4<0.136 <0.1367.25 7.00Ethylbenzene<0.1060.482 J<0.4240.382 J 0.608 J 0.352 J 0.434 J 0.360 J<0.106Heptane<0.1430.959 J<0.5720.545 J 1.23 J<0.1430.381 J 0.656 J 0.738 JIsopropanol 2.31 J1,060<0.55718.77701.06 J 1.53 J61.1 62.3Methylene Chloride 0.955 J<0.489 <1.956.39<0.4891.55 J 1.47 J 1.23 J 1.41 JNaphthalene<0.183 <0.183 <0.733 <0.183 <0.1830.477 J 0.435 J<0.183 <0.183Tetrachloroethene 0.814 J<0.181 <0.726 <0.181 <0.181 <0.1812.16 J 1.30 JB 2.09 JBTetrahydrofuran 2.79<0.1071,410 3.19<0.1072.72 2.81 0.655 J 0.640 JToluene 0.746 J 7.56 1.37 J 2.60 5.62 1.53 J 1.57 J 1.51 J 1.45 JTrichloroethene<0.199 <0.199 <0.796 <0.199 <0.199 <0.1990.580 J<0.199 <0.199Trichlorofluoromethane (Freon 11) 1.96 J<0.1302.29 J 5.05<0.1302.03 J 2.02 J 1.78 J 2.17 J1,2,4-Trimethylbenzene 0.516 J<0.110 <0.4400.767 J<0.1100.993 J 1.08 J<0.110 <0.110m&p-Xylene 0.899 J 1.85 J<0.8681.61 J 2.07 J 1.26 J 1.74 J 1.14 J 1.01 Jo-Xylene 0.412 J 1.11 J<0.6280.647 J 1.37 J 0.617 J 0.790 J 0.595 J 0.556 JNotes:Compound concentrations are reported in micrograms per cubic meter (µg/m3)Compound concentrations are reported to the laboratoy method detection limitBold indicates concentration exceeds the NC Department of Environmental Quality (DEQ) Division of Waste Management (DWM) Residential Sub-Slab and Exterior Soil Gas Screening Level (SGSL) or Indoor Air Screening Level (IASL) dated July 2022.Underline indicates concentration exceeds the Non-Residential SGSL or IASL. VOCs = Volatile Organic Compounds; EPA = Environmental Protection AgencyJ = compound was detected above the laboratory method detection limit, but below the laboratory reporting limit resulting in a laboratory estimated value.B = compound was detected in the associated method blank.µg/m3Area B-25/11/2022SS-MP-14 / SS-MP-DUPArea B-3IA-B-1/IA-B-DUPArea B-15/11/2022https://harthick.sharepoint.com/sites/MasterFiles-1/Shared Documents/AAA-Master Projects/Avalon Bay (AVA)/AVA-001 The Hub/Report/Tables/Tables 1 to 3, App. C - VIMP Summary Tables.xlsx9/29/2022Table 3 (Page 1 of 1)Hart & Hickman, PC 0 2000 4000 APPROXIMATE SCALE IN FEET N U.S.G.S. QUADRANGLE MAP QUADRANGLE 7.5 MINUTE SERIES (TOPOGRAPHIC) CHARLOTTE EAST, NC 1991 TITLE PROJECT SITE LOCATION MAP DUNAVANT STREET 2250 HAWKINS STREET CHARLOTTE, NORTH CAROLINA DATE: JOB NO: REVISION NO: FIGURE: 4-12-2019 0 1AVA-001 SITE REVISION NO. 0 JOB NO. AVA-001 DATE: 05-27-21 FIGURE NO. 2 DUNAVANT STREET 2250 HAWKINS STREET CHARLOTTE, NORTH CAROLINA SITE DEVELOPMENT PLAN LEGEND BUILDING SECTION SEPARATION 2923 South Tryon Street-Suite 100 Charlotte, North Carolina 28203 704-586-0007(p) 704-586-0373(f) License # C-1269 / #C-245 Geology BUILDING D NORTH BUILDING C NORTH BUILDING D SOUTH BUILDING C SOUTH BUILDING A BUILDING B S:\AAA-Master Projects\Ram Realty - RMR\RMR-002 Dunavant Street Brownfields\VMP\Occupancy requests\Figures\Site Development Plan.dwg, 11/27/2019 10:19:14 AM, DWG To PDF.pc3 DN UP UP DN D.S.MERCHANTILEOFFICELOBBY IA-B-3 IA-B-2 IA-B-1 / IA-B-DUP IA-BKG MP-15 MP-16 MP-17 MP-18 MP-13MP-10 MP-14MP-12MP-11 MP-9MP-4 MP-8MP-7 MP-3 MP-6 MP-2 MP-1 MP-5 TMP-5 TMP-7 TMP-9 LEGEND VACUUM MEASURING POINT - PERMANENT - 2" DIA SCH 40 PVC VACUUM MEASURING POINT - PERMANENT - 2" DIA SCH 40 PVC - SUB-SLAB SAMPLE LOCATION VACUUM MEASURING POINT - TEMPORARY - 2" DIA SCH 40 PVC COMPLETED TENANT UPFIT AREAS IN-PROGRESS TENANT UPFIT AREAS INDOOR AIR SAMPLE LOCATION BACKGROUND AIR SAMPLE LOCATION JOB NO. AVA-001 REVISION NO. 0DATE: 7-7-22 FIGURE NO. 3 DUNAVANT STREET 2250 HAWKINS STREET CHARLOTTE, NORTH CAROLINA SAMPLE LOCATION MAP 2923 South Tryon Street-Suite 100 Charlotte, North Carolina 28203 704-586-0007(p) 704-586-0373(f) License # C-1269 / #C-245 Geology DUNAVANT STREET HAWKINS STREETBUILDING D NORTH BUILDING D SOUTH BUILDING B BUILDING A BUILDING C NORTH BUILDING C SOUTH AREA B-3 AREA B-2 AREA B-1 S:\AAA-Master Projects\Avalon Bay (AVA)\AVA-001 The Hub\Figures\Sample Location Map.dwg, FIG 3, 10/14/2022 1:15:14 PM, amckenzie Appendix A VIMS Construction Drawings (VM-1 and VM-2) UP DN DN UP UP DN MERCHANTILEOFFICELOBBY DN UP UP DN D.S.MERCHANTILEOFFICELOBBY PUMP ROOM CHARLOTTE, NORTH CAROLINAdunavant street2250 HAWKINS STREETVM-1B - VAPOR MITIGATION SYSTEM PLAN 1" = 20' VAPOR MITIGATION PLAN PREPARED BY: 2923 South Tryon Street-Suite 100 Charlotte, North Carolina 28203 704-586-0007(p) 704-586-0373(f) License # C-1269 / #C-245 Geology H&H NO. RMR.002 VAPOR INTRUSION MITIGATION SYSTEM MAY 18, 2021 VM-1 F-1 LEGEND EXTENT OF VAPOR BARRIER - SEE SPECIFICATION #1 ON SHEET VM2 4" SCH 40 PVC SLOTTED PIPE UNLESS SPECIFIED IN SECTION DETAILS ON SHEET VM2 VERTICAL RISER (3" SCH. 40 PVC) AND FAN NUMBER (REFER TO DETAIL #14 ON SHEET VM2 VENTILATOR FAN SET-UP) VACUUM MEASURING POINT - PERMANENT - 2" DIA SCH 40 PVC VACUUM MEASURING POINT - TEMPORARY - 2" DIA SCH 40 PVC (ABANDONED AFTER PASSING PILOT TEST RESULTS) ABANDONED VACUUM MEASURING POINT - TEMPORARY - 2" DIA SCH 40 PVC (ABANDONED AFTER PASSING PILOT TEST RESULTS) IN-PROGRESS TENANT UPFIT AREAS NOTES: 1. FOUNDATION SLAB CONSTRUCTION IS COMPRISED OF SLAB-ON-GRADE WITH COLUMNS AND LIMITED THICKENED SLABS (THICKENED SLABS PRESENT WHERE INDICATED) 2. GROUND FLOOR LEVEL OF EACH BUILDING SHOWN. REFER TO STRUCTURAL AND ARCHITECTURAL DRAWINGS FOR FINAL BUILDING LAYOUT. F-1 REFER TO DETAIL VM-1A VM-1A - VAPOR MITIGATION SYSTEM PLAN 1" = 20' 7 VM2 7 VM2 11 VM2 SEAL VAPOR LINER TO TURNED DOWN SLAB (REFER TO SHEET VM2) 7/9 VM2 7/9 VM2 7 VM2 4/9 VM2 7/9 VM2 4/9 VM24/9 VM2 2 VM2 1 VM2 1 VM2 4" VENT PIPE PROTECTION SCREEN (TYPICAL AT ENDS OF PIPE) 4" SCH 40 PVC CROSS (TYPICAL) 4" SCH 40 PVC TEE (TYPICAL) 5 VM2 5 VM2 5 VM2 5 VM2 5 VM25 VM2 6 VM2 6 VM2 6 VM2 2 VM2 COLUMN LOCATION - REFER TO STRUCTURAL AND ARCHITECTURAL DRAWINGS OPEN AIR WALKWAY (LEVELS 1 & 2) TERMINATE HORIZONTAL EXTRACTION PIPE APPROXIMATELY 5 FEET FROM EXTERNAL WALL (TYPICAL) ELEV. 8 VM2 ELEV. ELEV.OPEN AIR WALKWAYLEVELS 1 & 2F-2 F-4 F-6 F-3 F-5 F-7 F-8 F-9 F-10 F-12 F-11 F-13 F-14 F-15 F-16 F-17 F-18 F-19 F-20 SEAL VAPOR LINER TO STEP DOWN SLAB EXTERNAL WALL OF SECOND FLOOR ram realty / blvd real estate advisorsPROFESSIONAL APPROVAL 1930 Camden Road Charlotte, North Carolina 28203 704-377-8773 (f) www.ramrealestate.com ELEC. ROOMVM-1C PROPOSED SITE BUILDINGS GROUND FLOOR LAYOUT 1" = 50' COMMERCIAL (RETAIL / OFFICE/ MERCHANTILE) LEASING OFFICE / CLUBHOUSE MECHANICAL & STAIRWELL VEHICLE ENTRY/EXIT MP-1 MP-2 MP-3 MP-4 MP-5 MP-6 MP-7 MP-8 TMP-1 TMP-3 TMP-4 TMP-2 MP-11 TMP-5 TMP-6 TMP-7 MP-9 MP-12 MP-10 MP-13 MP-14 MP-15 MP-16 MP-17 MP-18 TMP-8 TMP-9 BUILDING A BUILDING B (POUR-BACK AREA) BUILDING B BUILDING A BUILDING CBUILDING D BUILDING CBUILDING D (NORTH) (SOUTH) (NORTH) (SOUTH) (NORTH) (SOUTH) (NORTH) (SOUTH) RESIDENTIAL UNITS VIMS - SUB-SLAB LAYOUT THICKENED FOOTER PUMP ROOM AND ELECTRIC ROOM LOCATED ON GROUND FLOOR ONLY AND DO NOT CONNECT WITH LIVING SPACES GENERAL LOCATION OF TEMPORARY DOOR ON IN CENTRAL HALLWAY OF FLOORS 3 THROUGH 6 TO SEPARATE BUILDING B FROM BUILDING A GENERAL LOCATION OF TEMPORARY DOOR ON IN CENTRAL HALLWAY OF FLOORS 3 THROUGH 6 TO SEPARATE BUILDING B FROM BUILDINGS C AND D AREA B-1AREA B-2AREA B-3 3 VM2 05/18/21 VIMS VAPOR LINER AND BASE COURSE (TYP)1VIMS SLOTTED COLLECTION PIPE (TYP)2BASE COARSE - CLEAN #57 STONE (OR SIMILARHIGH PERMEABILITY STONE),MIN 4" THICK BENEATH VIMS VAPOR LINERVAPOR LINER (SEE SPECIFICATION #1)4" SCH 40 THREADED FLUSH JOINTSLOTTED PVC PIPE (0.020" SLOT WIDTH,1/8" SLOT SPACING) WITH FILTER SOCKSET WITHIN MIN 4" BASE COURSEVAPOR LINER (SEE SPECIFICATION #1)PROPOSED CONCRETE FLOOR SLABSUBBASESUBBASENTSNTSVM2VM2VIMS TURBINE VENTILATOR FAN & EXHAUST (TYPICAL)9VM2NTSTURBINE FAN(EMPIRE MODEL TV04G)ELECTRICAL JUNCTION BOX FOR POTENTIAL FUTUREVACUUM FAN TO BE INSTALLED IN CENTRALLOCATIONS ON ROOF4" X 3" RUBBER COUPLING3" PVC DUCT PIPE THROUGH ROOFFLASHINGROOFTOPSOLID TO SLOTTED 4" SCH 40PVC PIPE TRANSITION (SLIP COUPLINGOR THREADED JOINT)TENANT SEPARATIONSTUD WALLVAPOR LINERBENEATH THICKENED SLABBASE COARSE(SEE SPECIFICATION #1)VIMS PIPING AT THICKENED SLAB3VM2NTS6NTSVM2TYPICAL VIMS PIPING ABOVE COLUMN FOOTING DETAIL7NTSVM2TYPICAL VIMS LINER BELOW ELEVATOR PIT8NTSVM2SUB-BASEBASE COARSE(SEE SPECIFICATION #1)VAPOR LINER SEALED TO CONCRETEON OUTSIDE OF COLUMN PERMANUFACTURER INSTRUCTIONSCONTINUOUS VAPOR LINERSEALED PER MANUFACTURERINSTRUCTIONSSOLID 4" SCH 40 PVCFLOOR CLEANOUT, ADJUSTABLE,2" DIA ZURN INDUSTRIESMODEL #CO2450-PV2(OR EQUIVALENT)VAPOR LINER PENETRATION SEALED TOPIPE PER MANUFACTURER INSTRUCTIONS2" SCH 40 PVC 90 DEGREE ELBOW2" VENT PIPEPROTECTION SCREENBASE COARSE(SEE SPECIFICATION #1)STUD WALL(NOT PRESENT IN ALLLOCATIONS)2" SOLID SCH 40 PVCSECTION THROUGH EXTERIOR LEAVE OUT WITH BRICK4NTSVM2BRICK EXTERNAL WALLSTUD WALLGROUT VOID3" SCH 40 PVC RISER DUCT PIPE(SEE SPECIFICATION 2 & 5)BASE COARSE(SEE SPECIFICATION #1)4" SCH 40 PVC TRANSITIONTO SLOTTED PIPE4" SCH 40 PVC4"X3" SCH 40 PVC 90 DEGREEREDUCING ELBOW OR 4"X3"REDUCER ADJACENT TO ELBOW4" SLOTTED SCH 40 PVCPIPE (SEE DETAIL 2)TOP OF THICKENEDSLAB TURNDOWN (IFPRESENT) VENT PIPEPROTECTION SCREENBASE COARSE(SEE SPECIFICATION #1)STUD WALL OR EXTERNAL WALL(NOT PRESENT IN ALL LOCATIONS)FLOOR CLEANOUT, ADJUSTABLE,2" DIA ZURN INDUSTRIESMODEL #CO2450-PV2VAPOR LINER PENETRATION SEALED TOPIPE PER MANUFACTURERINSTRUCTIONS2" SOLID SCH 40PVC (APPROXIMATE 5 FT LENGTH)2" SCH 40PVC 90 DEGREE ELBOW5NTSVM2VAPOR LINER PENETRATION SEALEDTO PIPE PER MANUFACTURERINSTRUCTIONSPROVIDE PIPE SUPPORT TO PREVENT LOW POINTIN SOLID SECTION OF PIPE. MAINTAIN MINIMUM1% SLOPE TOWARD SLOTTED SECTIONS OF PIPE.(SEE SPECIFICATION #2)FLUSH WITHFINISHED FLOORFLUSH WITHFINISHED FLOOR4" SCH 40 PVC TRANSITIONTO SLOTTED PIPE3" SCH 40 PVC RISER DUCT PIPE. POSITIONRISER PIPE WITHIN STUD WALLS ON UPPERFLOORS. (SEE SPECIFICATION #3 & #5)3" SCH 40 PVC RISER DUCT PIPE ATTACHEDTO COLUMN WHEN NO STUD WALLPRESENT.VAPOR LINERPENETRATION SEALED TOPIPE PER MANUFACTURERINSTRUCTIONSTEMPORARY MEASURING POINTS WILL BE ABANDONED DURING SLAB POUR. TEMPORARYMEASURING POINTS PASSED PILOT TEST RESULTS. SEE VM1 AND VIMS REPORT.VIMS PRESSURE MEASURING POINT WITH EXTENDED INTAKE PIPE (THICKENED SLAB MAY NOT BE PRESENT - SEE VM-1)PROVIDE PIPE SUPPORT TO PREVENT LOW POINTIN SOLID SECTION OF PIPE. MAINTAIN MINIMUM1% SLOPE TOWARD SLOTTED SECTIONS OF PIPE.(SEE SPECIFICATION #2)PROVIDE PIPE SUPPORT TO PREVENT LOW POINTIN SOLID SECTION OF PIPE. MAINTAIN MINIMUM1% SLOPE TOWARD SLOTTED SECTIONS OF PIPE.(SEE SPECIFICATION #2)PRESSURE MONITORING POINT VMSVAPOR LINER SEALED TO CONCRETEON OUTSIDE OF ELEAVATOR SHAFTPER MANUFACTURER INSTRUCTIONS.IF WATERPROOFING IS PRESENT,INSTALL VAPOR LINER ON OUTSIDE OFWATERPROOFING SO VAPOR LINER ISBETWEEN WATERPROOFING ANDBACKFILLED SOILSWATERPROOFINGWATERPROOFING4"X3" SCH 40 PVC 90 DEGREEREDUCING ELBOW OR 4"X3"REDUCER ADJACENT TO ELBOWPROPOSED CONCRETE FLOOR SLABPROPOSED CONCRETE FLOOR SLABPROPOSED CONCRETE SLABPROPOSED CONCRETE FLOOR SLABPROPOSED CONCRETE FLOOR SLABPROPOSED CONCRETE FLOOR SLABH&H NO. RMR.002VAPOR MITIGATIONSYSTEM PLANMAY 1, 2021VM-2VAPOR INTRUSION MITIGATION SYSTEM (VIMS) SPECIFICATIONS1. VIMS VAPOR LINER IS STEGO WRAP 15-MIL VAPOR BARRIER MANUFACTURED BY STEGO INDUSTRIES LLC.THE VAPOR LINER IS INSTALLED AS SPECIFIED HEREIN AND PER MANUFACTURER INSTALLATION INSTRUCTIONS TO CREATE A CONTINUOUS LINER WITHIN THE GROUND FLOOR OF BUILDING B AND SHALL BEINSTALLED BELOW THE CONCRETE SLAB UPON FUTURE UPFIT ACTIVITIES. A MINIMUM 4-INCH THICK BASE COURSE CONSISTING OF CLEAN #57 IS INSTALLED BENEATH THE VIMS VAPOR LINER.2. VIMS PIPING IS NOT BE TRAPPED AND IS SLOPED A MINIMUM OF 18 UNIT VERTICAL IN 12 UNITS HORIZONTAL (1%SLOPE) TO GRAVITY DRAIN. SOLID SECTIONS OF HORIZONTAL COLLECTION PIPE ARE SUPPORTED TOPREVENT PIPE SAG OR LOW POINT AND MAINTAIN 1% SLOPE TOWARD SLOTTED SECTIONS TO DRAINCONDENSATION. HORIZONTAL COLLECTION PIPE SHALL CONSISTS OF 4" SCH 40 PVC (OR OTHERWISE NOTEDIN THE DRAWINGS). PVC PIPE JOINTS ARE CONNECTED USING PVC SOCKET COUPLINGS AND PVC GLUE.SUB-SLAB SLOTTED VAPOR COLLECTION PIPE IS 4" SCH 40 PVC PIPE WITH 0.020" SLOT WIDTH AND 18" SLOTSPACING.3. 3" PVC RISER DUCT PIPING IS INSTALLED TO CONNECT EACH SLAB PENETRATION LOCATION TO A ROOFTOPEXHAUST DISCHARGE POINT WITH TURBINE FAN (SEE SPECIFICATION #9). ABOVE-SLAB RISER DUCT PIPERUNS BETWEEN THE SLAB PENETRATION AND THE ROOFTOP EXHAUST DISCHARGE IS INSTALLED PERAPPLICABLE BUILDING CODE AND AS SPECIFIED IN THE CONSTRUCTION DOCUMENTS AND DRAWINGS.4. RISER DUCT PIPING EXTENDS IN A VERTICAL ORIENTATION THROUGH THE BUILDING ROOF AND TERMINATES AMINIMUM OF 2 FT ABOVE THE BUILDING ROOF LINE.A EMPIRE MODEL TV04G TURBINE VENTILATOR FAN ISINSTALLED ON THE EXHAUST DISCHARGE END OF EACH RISER DUCT PIPE. A 4" X 3" RUBBER ADAPTORCOUPLING IS INSTALLED AT THE DISCHARGE END OF THE 3" RISER DUCT PIPE AND THE FAN IS SECURED TOTHE PVC RISER IN A VERTICAL ORIENTATION.EXHAUST DISCHARGE LOCATIONS ARE A MINIMUM OF 10 FTFROM ANY OPERABLE OPENING OR AIR INTAKE INTO THE BUILDING.5. ABOVE-SLAB ACCESSIBLE RISER DUCT PIPING IS PERMANENTLY IDENTIFIED BY MEANS OF A TAG OR STENCILAT A MINIMUM OF ONCE EVERY 10-LINEAR FT WITH "VAPOR SYSTEM". LABELS ARE ALSO BE FIXED TO THETURBINE VENTILATOR FANS IN AN ACCESSIBLE LOCATION ON THE ROOFTOP THAT READ "VAPOR MITIGATION -CONTACT MAINTENANCE."6. THIS VAPOR MITIGATION PLAN IS INTENDED TO BE USED FOR DIRECTION OF VIMS COMPONENT INSTALLATIONONLY AND IS NOT INTENDED TO GUIDE CONSTRUCTION OF STRUCTURAL COMPONENTS NOT RELATED TO THEVIMS. CONSTRUCTION CONTRACTOR SHALL VERIFY CONSISTENCY OF VIMS DETAILS WITH APPLICABLESTRUCTURAL, ARCHITECTURAL, MECHANICAL, AND PLUMBING PLANS AND RESOLVE ANY INCONSISTENCIESPRIOR TO VIMS INSTALLATION.7. THE CONCRETE SLAB-ON-GRADE IN BUILDING B HAS NOT BEEN POURED AS OF THE DATE OF THIS DRAWING,BUT ALL OTHER COMPONENTS AS DEPICTED IN THE DRAWING HAVE BEEN COMPLETE. THE CONCRETE SLABWILL BE POURED UPON FUTURE UPFIT ACTIVITIES.PROFESSIONALAPPROVALCHARLOTTE, NORTH CAROLINAdunavant street2250 HAWKINS STREETram realty / blvd real estate advisorsVAPOR MITIGATION PLAN PREPARED BY:2923 South Tryon Street-Suite 100Charlotte, North Carolina 28203704-586-0007(p) 704-586-0373(f)License # C-1269 / #C-245 Geology1930 Camden RoadCharlotte, North Carolina 28203704-377-8773 (f)www.ramrealestate.com05/1/21 CONSTRUCTIONDRAWINGBUILDING BS:\AAA-Master Projects\Ram Realty - RMR\RMR-002 Dunavant Street Brownfields\VMP\VIMS Installation Reports\Building B\Figures\VMP_final_revision 1.dwg, 5/15/2020 4:31:02 PM, DWG To PDF.pc3 Appendix B Field Forms Category Example Criteria Proper base layer (i.e., gravel, aerated flooring) and thickness Proper placement, type, and pitch of VIMS vent piping Proper placement, type, and pitch of monitoring points Correct vapor barrier type Proper vapor barrier overlap and seals around penetrations per manufacturer instructions Proper vapor barrier installation along vertical walls (e.g. retaining walls, elevators, etc.) Good condition of vapor barrier Riser pipe material and fitting connections Proper pitch towards sub-slab (gravity drain) Appropriate VIMS labels Correct fan/ventilator Fan/ventilator operation Proper fittings and protection (varmint screens, electrical covers, etc.) Appropriate VIMS labels Proper distance from roof intakes and parapets Pilot test completed Monitoring points finished and accessible NA = Not Applicable Vapor Intrusion Mitigation System - Inspection Checklist Proper Installation (Initial below) Site Name and H&H Project #: AVA-001 DEQ Brownfields ID: 19038-15-060 Building/Area ID: Building B ground floor - pourback area vapor barrier repairs Start Date and End Date: April 2022 Sub-Slab Vapor Barrier Vent Riser Piping NA NA NA MJW NA MJW Pilot Test / Checkout MJW MJW NA NA NA NA NA Fan/Ventilator NA NA NA MJW https://harthick.sharepoint.com/sites/MasterFiles-1/Shared Documents/AAA-Master Projects/Avalon Bay (AVA)/AVA-001 The Hub/Report/Appendices/VIMS Inspection Checklist_Reporting\Template Appendix BVIMS Pilot Test Vacuum MonitoringDunavant Street - Building BCharlotte, North CarolinaBrownfields Project No.19038-15-060H&H Job No. AVA-001Date Building ID Riser Fan IDMonitoring Point IDVacuum Monitoring Point Measurements (in-WC)MP-9-0.037TMP-5-0.021F-11MP-11-0.017F-13MP-12-0.024F-14MP-10-0.046MP-14-0.018TMP-7-0.0174/20/2022BF-15MP-13-0.146NotesVacuum measurements are reported in inches of water column (in-WC).Shop-vac was used on riser pipes on the roof of Building B to generate vacuum influence. MP-13 was blocked during initial pilot testing activities and was retested after clearing the point.F-10F-164/7/2022 B https://harthick.sharepoint.com/sites/MasterFiles-1/Shared Documents/AAA-Master Projects/Avalon Bay (AVA)/AVA-001 The Hub/Dec 2021 - Sampling/Tables/Pilot Test Data7/6/2022Appendix B (Page 1 of 1)Hart & Hickman, PC &Žƌŵ^sͲϭ6XE6ODE6RLO*DV9DSRU,QVWDOODWLRQ)LHOG)RUP3URMHFW1RBBBBBBBBBBBBBBBBBB6DPSOHUBBBBBBBBBBBBBBBBBBBBBB:HDWKHUBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB6XUIDFH0DWHULDO6ODE7KLFNQHVVLIDSSO0DWHULDO%HORZ6ODELIDSSO'HSWKRI6FUHHQLIDSSO7\SH 'DWH 7LPH$PELHQW7HPS3XUJH0HWKRG9ROXPH3XUJHG6KURXG+HOLXP&RQF3XUJH+HOLXP&RQF/HDN7HVW3DVV"VHHQRWH666*3HUP7HPS&RQFUHWHVRLOJUDYHODVSKDOW,QFKHV*UDYHOVDQGFOD\HWFIWEJV)XOOVDPSOHWUDLQRUSRLQWRQO\PPGG\\KUR)6\ULQJHSXPS/LWHUVVHHQRWHVIRUFDOFRUSSPLQGLFDWHXQLWVEHORZ<HV1R^͗͗Z͗^͗͗Z͗^͗͗Z͗^͗͗Z͗^͗͗Z͗^͗͗Z͗6 VDPSOH,'& FDQLVWHU,'5 UHJXODWRU,'66 VXEVODE6* VRLOJDV3HUP SHUPDQHQW7HPS WHPSRUDU\9ROXPH3XUJHG [SXUJHYROXPHV / D/DVWXSGDWHG+J LQFKHVRIPHUFXU\SSP SDUWVSHUPLOOLRQ1RWHVBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB6DPSOH,'7\SH9DSRU0RQLWRULQJ3RLQW&RQVWUXFWLRQ +HOLXP/HDN7HVWEŽƚĞ͗>ĞĂŬdĞƐƚZĞƋƵŝƌĞŵĞŶƚƐWĞƌEYtDsĂƉŽƌ/ŶƚƌƵƐŝŽŶ'ƵŝĚĂŶĐĞ͕ůĞĂŬƚĞƐƚƉĂƐƐĞƐŝĨŚĞůŝƵŵĐŽŶĐĞŶƚƌĂƚŝŽŶŝŶƉƵƌŐĞĂŝƌŝƐůĞƐƐƚŚĂŶϭϬйŽĨŚĞůŝƵŵĐŽŶĐĞŶƚƌĂƚŝŽŶŝŶƐŚƌŽƵĚ͘/ OHQJWKRIWXELQJSLSHIWD IRUGLDPHWHU/IWD IRUGLDPHWHU/IW͗ͰhƐĞƌƐͰŵǀĂǁƚĞƌͰƌŽƉďŽǆͰǇKƚŚĞƌͰ&ŽƌŵĚŝƚƐͰ/YͲ^^sͰsĂƉŽƌ^ĂŵƉůŝŶŐ&ŽƌŵƐͺsϲ͘Ϭ^ƵďͲ^ůĂďͬ^Žŝů'ĂƐ^ĂŵƉůŝŶŐsĂƉŽƌ/ŶƐƚĂůůĂƚŝŽŶ&ŝĞůĚ&Žƌŵ,ĂƌƚΘ,ŝĐŬŵĂŶ͕WRMR-002KAMcouldy, 60s FMP-6/MP-DUP11374/11379SS Perm. concreteNA NA NA Full Train 1/29/21 66 pump 10 L 10.71500 ppmYes14295MP-75985SS Perm. concreteNA NA NA Full Train1/29/2167 pump 15 L 10.52400 ppmYes6552MP-15941SS Perm. concreteNA NA NA Full Train 1/29/21 69 pump 15 L 10.2 0.0 ppm Yes14299MP-155866SS Perm. concreteNA NA NA Full Train 1/29/21 70 pump 15 L 10.6 0.0 ppm Yes6551MP-185882SS Perm. concreteNA NA NA Full Train 1/29/21 70 pump 15 L 11.2 0.0 ppm Yes6556MP-45989SS Perm. concreteNA NA NA Full Train 1/29/21 67 pump 15 L 10.7 0.0 ppm Yes14306 &Žƌŵ^sͲϮ6XE6ODE6RLO*DV9DSRU6DPSOLQJ)LHOG)RUP3URMHFW1RBBBBBBBBBBBBBBBBBBB 6DPSOHUBBBBBBBBBBBBBBBBBBBBBB :HDWKHUBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB'DWH3URSRVHG6DPSOLQJ'XUDWLRQ7LPH&DQLVWHU3UHVVXUH2XWGRRU7HPSHUDWXUH2XWGRRU+XPLGLW\,QGRRU7HPSHUDWXUH,QGRRU+XPLGLW\PPGG\\ 0LQXWHVKU+JR)R)^͗%HJLQQLQJ͗0LGGOHZ͗(QG^͗%HJLQQLQJ͗0LGGOHZ͗(QG^͗%HJLQQLQJ͗0LGGOHZ͗(QG^͗%HJLQQLQJ͗0LGGOHZ͗(QG^͗%HJLQQLQJ͗0LGGOHZ͗(QG^͗%HJLQQLQJ͗0LGGOHZ͗(QG6 VDPSOH,'& FDQLVWHU,'5 UHJXODWRU,'66 VXEVODE6* VRLOJDV3HUP SHUPDQHQW7HPS WHPSRUDU\/DVWXSGDWHG+J LQFKHVRIPHUFXU\1RWHVBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB^ŝǌĞ͗&ůŽǁZĂƚĞ͗^ŝǌĞ͗&ůŽǁZĂƚĞ͗6DPSOH,'^ŝǌĞ͗&ůŽǁZĂƚĞ͗^ŝǌĞ͗&ůŽǁZĂƚĞ͗^ŝǌĞ͗&ůŽǁZĂƚĞ͗^ŝǌĞ͗&ůŽǁZĂƚĞ͗6DPSOLQJ,QIRUPDWLRQ ,QGRRU3DUDPHWHUV2XWGRRU3DUDPHWHUV6DPSOLQJ3HULRGEŽƚĞ͗WĞƌEYtDsĂƉŽƌ/ŶƚƌƵƐŝŽŶ'ƵŝĚĂŶĐĞ͕ƐŚƵƚͲŝŶƚĞƐƚĂŶĚŚĞůŝƵŵůĞĂŬĐŚĞĐŬŵƵƐƚďĞƉĂƐƐĞĚďĞĨŽƌĞƐĂŵƉůŝŶŐ͗͘ͰhƐĞƌƐͰŵǀĂǁƚĞƌͰƌŽƉďŽǆͰǇKƚŚĞƌͰ&ŽƌŵĚŝƚƐͰ/YͲ^^sͰsĂƉŽƌ^ĂŵƉůŝŶŐ&ŽƌŵƐͺsϲ͘Ϭ^ƵďͲ^ůĂďͬ^Žŝů'ĂƐ^ĂŵƉůŝŶŐsĂƉŽƌ^ĂŵƉůŝŶŐ&ŝĞůĚ&Žƌŵ,ĂƌƚΘ,ŝĐŬŵĂŶ͕WRMR-002KAMcloudy, 60s FMP-6/MP-DUP1 L11374/1137912/29/21 100.10 L/min09:12 -1566 83 651429509:17 -509:07 -2770MP-71 L09:47 -27598512/29/21 1009:52 -1467 83 70 650.10 L/min655209:57 -5MP-110:15 -271 L594112/29/21 1069 81 70 70142990.10 L/min10:20 -1710:26 -5MP-1510:58 -271 L586612/29/21 1011:03 -1570 96 70 7065510.10 L/min11:08 -4MP-1811:27 -271 L588212/29/21 1011:32 -1570 96 70 700.10 L/min655611:38 -5MP-41 L12:16 -2812/29/2159891012:21 -1767 94 NA NA143060.10 L/min12:26 -5 &Žƌŵ^sͲϭ6XE6ODE6RLO*DV9DSRU,QVWDOODWLRQ)LHOG)RUP3URMHFW1RBBBBBBBBBBBBBBBBBB6DPSOHUBBBBBBBBBBBBBBBBBBBBBB:HDWKHUBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB6XUIDFH0DWHULDO6ODE7KLFNQHVVLIDSSO0DWHULDO%HORZ6ODELIDSSO'HSWKRI6FUHHQLIDSSO7\SH 'DWH 7LPH$PELHQW7HPS3XUJH0HWKRG9ROXPH3XUJHG6KURXG+HOLXP&RQF3XUJH+HOLXP&RQF/HDN7HVW3DVV"VHHQRWH666*3HUP7HPS&RQFUHWHVRLOJUDYHODVSKDOW,QFKHV*UDYHOVDQGFOD\HWFIWEJV)XOOVDPSOHWUDLQRUSRLQWRQO\PPGG\\KUR)6\ULQJHSXPS/LWHUVVHHQRWHVIRUFDOFRUSSPLQGLFDWHXQLWVEHORZ<HV1R^͗͗Z͗^͗͗Z͗^͗͗Z͗^͗͗Z͗^͗͗Z͗^͗͗Z͗6 VDPSOH,'& FDQLVWHU,'5 UHJXODWRU,'66 VXEVODE6* VRLOJDV3HUP SHUPDQHQW7HPS WHPSRUDU\9ROXPH3XUJHG [SXUJHYROXPHV / D/DVWXSGDWHG+J LQFKHVRIPHUFXU\SSP SDUWVSHUPLOOLRQ1RWHVBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB6DPSOH,'7\SH9DSRU0RQLWRULQJ3RLQW&RQVWUXFWLRQ +HOLXP/HDN7HVWEŽƚĞ͗>ĞĂŬdĞƐƚZĞƋƵŝƌĞŵĞŶƚƐWĞƌEYtDsĂƉŽƌ/ŶƚƌƵƐŝŽŶ'ƵŝĚĂŶĐĞ͕ůĞĂŬƚĞƐƚƉĂƐƐĞƐŝĨŚĞůŝƵŵĐŽŶĐĞŶƚƌĂƚŝŽŶŝŶƉƵƌŐĞĂŝƌŝƐůĞƐƐƚŚĂŶϭϬйŽĨŚĞůŝƵŵĐŽŶĐĞŶƚƌĂƚŝŽŶŝŶƐŚƌŽƵĚ͘/ OHQJWKRIWXELQJSLSHIWD IRUGLDPHWHU/IWD IRUGLDPHWHU/IW͗ͰhƐĞƌƐͰŵǀĂǁƚĞƌͰƌŽƉďŽǆͰǇKƚŚĞƌͰ&ŽƌŵĚŝƚƐͰ/YͲ^^sͰsĂƉŽƌ^ĂŵƉůŝŶŐ&ŽƌŵƐͺsϲ͘Ϭ^ƵďͲ^ůĂďͬ^Žŝů'ĂƐ^ĂŵƉůŝŶŐsĂƉŽƌ/ŶƐƚĂůůĂƚŝŽŶ&ŝĞůĚ&Žƌŵ,ĂƌƚΘ,ŝĐŬŵĂŶ͕WAVA-001SMSSunny and 70SS-MP-911365SS Perm. Conc. N/A Gravel N/A Full5/11/22 14:5070 Pump 10L 15.0 0.0 Yes14303SS-MP-105976SS Perm. Conc. N/A Gravel N/A Full70 Pump 10L 15.0 0.0 Yes6553SS-MP-125522SS Perm. Conc. N/A Gravel N/A Full70 Pump 10L 15.0 0.0 Yes14299SS Perm. Conc. N/A Gravel N/A Full 5/11/22 13:3070 Pump 10L 15.5 0.0 YesSS-MP-14/DUP 11355/11370 162365/11/22 14:205/11/22 12:50 &Žƌŵ^sͲϮ6XE6ODE6RLO*DV9DSRU6DPSOLQJ)LHOG)RUP3URMHFW1RBBBBBBBBBBBBBBBBBBB 6DPSOHUBBBBBBBBBBBBBBBBBBBBBB :HDWKHUBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB'DWH3URSRVHG6DPSOLQJ'XUDWLRQ7LPH&DQLVWHU3UHVVXUH2XWGRRU7HPSHUDWXUH2XWGRRU+XPLGLW\,QGRRU7HPSHUDWXUH,QGRRU+XPLGLW\PPGG\\ 0LQXWHVKU+JR)R)^͗%HJLQQLQJ͗0LGGOHZ͗(QG^͗%HJLQQLQJ͗0LGGOHZ͗(QG^͗%HJLQQLQJ͗0LGGOHZ͗(QG^͗%HJLQQLQJ͗0LGGOHZ͗(QG^͗%HJLQQLQJ͗0LGGOHZ͗(QG^͗%HJLQQLQJ͗0LGGOHZ͗(QG6 VDPSOH,'& FDQLVWHU,'5 UHJXODWRU,'66 VXEVODE6* VRLOJDV3HUP SHUPDQHQW7HPS WHPSRUDU\/DVWXSGDWHG+J LQFKHVRIPHUFXU\1RWHVBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB^ŝǌĞ͗&ůŽǁZĂƚĞ͗^ŝǌĞ͗&ůŽǁZĂƚĞ͗6DPSOH,'^ŝǌĞ͗&ůŽǁZĂƚĞ͗^ŝǌĞ͗&ůŽǁZĂƚĞ͗^ŝǌĞ͗&ůŽǁZĂƚĞ͗^ŝǌĞ͗&ůŽǁZĂƚĞ͗6DPSOLQJ,QIRUPDWLRQ ,QGRRU3DUDPHWHUV2XWGRRU3DUDPHWHUV6DPSOLQJ3HULRGEŽƚĞ͗WĞƌEYtDsĂƉŽƌ/ŶƚƌƵƐŝŽŶ'ƵŝĚĂŶĐĞ͕ƐŚƵƚͲŝŶƚĞƐƚĂŶĚŚĞůŝƵŵůĞĂŬĐŚĞĐŬŵƵƐƚďĞƉĂƐƐĞĚďĞĨŽƌĞƐĂŵƉůŝŶŐ͗͘ͰhƐĞƌƐͰŵǀĂǁƚĞƌͰƌŽƉďŽǆͰǇKƚŚĞƌͰ&ŽƌŵĚŝƚƐͰ/YͲ^^sͰsĂƉŽƌ^ĂŵƉůŝŶŐ&ŽƌŵƐͺsϲ͘Ϭ^ƵďͲ^ůĂďͬ^Žŝů'ĂƐ^ĂŵƉůŝŶŐsĂƉŽƌ^ĂŵƉůŝŶŐ&ŝĞůĚ&Žƌŵ,ĂƌƚΘ,ŝĐŬŵĂŶ͕WAVA-001SMSSunny and 70sSS-MP-91.4L113655/11/22 10140mL/min15:02-1477 32N/A1430315:08-514:57-27N/ASS-MP-101.4L14:27-2759765/11/22 1014:32-1677 32 N/A N/A140mL/min655314:38-4SS-MP-1213:00-261.4L55225/11/22 1077 32 N/A N/A14299140mL/min13:05-2413:08-5SS-MP-14 / SS-MP-DUP13:40-26.51.4L11355 / 113705/11/22 1013:45-1877 32 N/A N/A16236140mL/min13:51-5 &Žƌŵ/^Ͳϭ,QGRRU$LU6DPSOLQJ)LHOG)RUP3URMHFW1RBBBBBBBBBBBBBBBBBBB 6DPSOHUBBBBBBBBBBBBBBBBBBBBBB :HDWKHUBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB'DWH3URSRVHG6DPSOLQJ'XUDWLRQ7LPH&DQLVWHU3UHVVXUH'LIIHUHQWLDO3UHVVXUH2XWGRRU7HPSHUDWXUH2XWGRRU+XPLGLW\,QGRRU7HPSHUDWXUH,QGRRU+XPLGLW\PPGG\\ +RXUVKU+J+2R)R)^͗%HJLQQLQJ͗0LGGOHZ͗(QG^͗%HJLQQLQJ͗0LGGOHZ͗(QG^͗%HJLQQLQJ͗0LGGOHZ͗(QG^͗%HJLQQLQJ͗0LGGOHZ͗(QG^͗%HJLQQLQJ͗0LGGOHZ͗(QG^͗%HJLQQLQJ͗0LGGOHZ͗(QG6 VDPSOH,'& FDQLVWHU,'5 UHJXODWRU,' 1RWHQHJDWLYHGLIIHUHQWLDOSUHVVXUHLQGLFDWHVWKDWLQGRRUSUHVVXUHZDVORZHUWKDQSUHVVXUHRXWGRRUV/DVWXSGDWHG+J LQFKHVRIPHUFXU\+2 LQFKHVRIZDWHUFROXPQ7LPH(671RWHVBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB3UHFLSLWDWLRQLQFKHVBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB%DURPHWULF3UHVVXUH+JBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB:LQG'LUHFWLRQBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB:LQG6SHHGPSKBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB^ŝǌĞ͗&ůŽǁZĂƚĞ͗^ŝǌĞ͗&ůŽǁZĂƚĞ͗^ŝǌĞ͗&ůŽǁZĂƚĞ͗^ŝǌĞ͗&ůŽǁZĂƚĞ͗,QGRRU3DUDPHWHUV6DPSOLQJ3HULRG6DPSOLQJ,QIRUPDWLRQ2XWGRRU3DUDPHWHUV6DPSOH,'^ŝǌĞ͗&ůŽǁZĂƚĞ͗^ŝǌĞ͗&ůŽǁZĂƚĞ͗͗ͰhƐĞƌƐͰŵǀĂǁƚĞƌͰƌŽƉďŽǆͰǇKƚŚĞƌͰ&ŽƌŵĚŝƚƐͰ/YͲ^^sͰsĂƉŽƌ^ĂŵƉůŝŶŐ&ŽƌŵƐͺsϲ͘Ϭ/ŶĚŽŽƌŝƌ^ĂŵƉůŝŶŐ&ŝĞůĚ&Žƌŵ,ĂƌƚΘ,ŝĐŬŵĂŶ͕WAVA-001SMSSunny and 70sIA-BKG1225-29 -- 72 31 -- --6L426495/11/22 81635-18 -- 81 32 -- --16209---- --IA-B-1 / IA-B-DUP1225-27 0.010 72 31 70 306L36109 / 361105/11/22 8-17 0.008 81 32 75 3314326IA-B-21230-29.5 0.005 72 31 70 306L426505/11/22 81630-18 0.006 81 32 81 3113142IA-B-31230-29.5 0.003 72 31 70 306L372735/11/22 81630-19 0.003 81 32 73 33162122716:35-60.00820:15-70.00820:19-70.00120:2230753473 30723473 307334-573 3012:3016:3020:300.00.00.029.3929.3030.09NENENE10129 INDOOR AIR BUILDING SURVEY and SAMPLING FORM Site Name: ____________________________________ DSCAID#: ______________________ Preparer’s name: ________________________________ Date: __________________________ Preparer’s affiliation: ____________________________ Phone #: _______________________ Part I - Occupants Building Address: ____________________________________________________________________ Property Contact: _______________________________ Owner / Renter / other: ______________ Contact’s Phone: home ( )__________ work ( )______________ cell ( )____________ # of Building occupants: Children under age 13 _____ Children age 13-18 ______ Adults _____ Part II – Building Characteristics Building type: residential / multi-family residential / office / strip mall / commercial / industrial Describe building: ________________________________________ Year constructed: _________ Sensitive population: day care / nursing home / hospital / school / other (specify): _______________ Number of floors below grade: ______ (full basement / crawl space / slab on grade) Number of floors at or above grade: ______ Depth of basement below grade surface: ______ ft. Basement size: _______ ft2 Basement floor construction: concrete / dirt / floating / stone / other (specify): ________________ Foundation walls: poured concrete / cinder blocks / stone / other (specify) ________________ Basement sump present? Yes / No Sump pump? Yes / No Water in sump? Yes / No Type of heating system (circle all that apply): hot air circulation hot air radiation wood steam radiation heat pump hot water radiation kerosene heater electric baseboard other (specify): ________________________ Type of ventilation system (circle all that apply): central air conditioning mechanical fans bathroom ventilation fans individual air conditioning units kitchen range hood fan outside air intake other (specify): _________________ Type of fuel utilized (circle all that apply): Natural gas / electric / fuel oil / wood / coal / solar / kerosene Are the basement walls or floor sealed with waterproof paint or epoxy coatings? Yes / No The Hub - Building B Shannon Switch 5/11/22 H&H 2250 Hawkins Street Charlotte, NC commercial on ground floor, residential above 2018 0 6 00 Is there a whole house fan? Yes / No Septic system? Yes / Yes (but not used) / No Irrigation/private well? Yes / Yes (but not used) / No Type of ground cover outside of building: grass / concrete / asphalt / other (specify) _____________ Existing subsurface depressurization (radon) system in place? Yes / No active / passive Sub-slab vapor/moisture barrier in place? Yes / No Type of barrier: ____________________________ Part III - Outside Contaminant Sources Other stationary sources nearby (gas stations, emission stacks, etc.): _____________________________ Heavy vehicular traffic nearby (or other mobile sources): ______________________________________ Part IV – Indoor Contaminant Sources Identify all potential indoor sources found in the building (including attached garages), the location of the source (floor and room), and whether the item was removed from the building 48 hours prior to indoor air sampling event. Any ventilation implemented after removal of the items should be completed at least 24 hours prior to the commencement of the indoor air sampling event. Potential Sources Location(s)Removed (Yes / No / NA) Gasoline storage cans Gas-powered equipment Kerosene storage cans Paints / thinners / strippers Cleaning solvents Oven cleaners Carpet / upholstery cleaners Other house cleaning products Moth balls Polishes / waxes Insecticides Furniture / floor polish Nail polish / polish remover Hairspray Cologne / perfume Air fresheners Fuel tank (inside building) NA Wood stove or fireplace NA New furniture / upholstery New carpeting / flooring NA Hobbies - glues, paints, etc. Stego Wrap (15 mil) Active construction sites adjacent S. Tryon Street N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A Part V – Miscellaneous Items Do any occupants of the building smoke? Yes / No How often? ______________ Last time someone smoked in the building? ____________ hours / days ago Does the building have an attached garage directly connected to living space? Yes / No If so, is a car usually parked in the garage? Yes / No Are gas-powered equipment or cans of gasoline/fuels stored in the garage? Yes / No Do the occupants of the building have their clothes dry cleaned? Yes / No If yes, how often? weekly / monthly / 3-4 times a year Do any of the occupants use solvents in work? Yes / No If yes, what types of solvents are used? _______________________________________ If yes, are their clothes washed at work? Yes / No Have any pesticides/herbicides been applied around the building or in the yard? Yes / No If so, when and which chemicals? _________________________________________________ Has there ever been a fire in the building? Yes / No If yes, when? _____________ Has painting or staining been done in the building in the last 6 months?Yes / No If yes, when __________________ and where? ____________________________ Part VI – Sampling Information Sample Technician: ____________________________ Phone number: ( ) _______ - __________ Sample Source: Indoor Air / Crawlspace Air / Sub-Slab / Near Slab Soil Gas / Exterior Soil Gas Sampler Type: Tedlar bag / Sorbent / Stainless Steel Canister / Other (specify): _________________ Analytical Method: TO-15 / TO-17 / other: _________ Cert. Laboratory: _________________ Sample locations (floor, room): Field ID # _____ - ________________________ Field ID # _____ - __________________________ Field ID # _____ - ________________________ Field ID # _____ - __________________________ Were “Instructions for Occupants” followed? Yes / No If not, describe modifications: __________________________________________________________ Shannon Switch Waypoint Analytical IA B-1/DUP IA B-3 IA B-2 IA BKG Provide Drawing of Sample Location(s) in Building Part VII - Meteorological Conditions Was there significant precipitation within 12 hours prior to (or during) the sampling event? Yes / No Describe the general weather conditions: ___________________________________________________ _____________________________________________________________________________________ Part VIII – General Observations Provide any information that may be pertinent to the sampling event and may assist in the data interpretation process (e.g., observed that drycleaner operated with door or windows propped open for ventilation). (Adapted from the NJDEP Vapor Intrusion Guidance, October 2005) high 70s and 80s, sunny Empty Pro Industrial Waterborne Acrylic Dryfall and PPG Pitt-Glaze WB1 Interior Acrylic Epoxy 5 gallon buckets were found in each room and removed at the time of sampling. Appendix C Historical Sub-Slab Soil Gas Analytical Data Summary Appendix CHistorical Sub-Slab Soil-Gas Analytical Data Summary Dunavant StreetCharlotte, North CarolinaBrownfields Project No. 19038-15-060H&H Project No. AVA-001Sample IDSS-MP-10Sample Date12/9/2020 12/29/2021 10/23/2019 12/9/2020 12/29/2021 12/26/2019 5/11/2022 5/11/2022 12/10/2020 5/11/2022 12/26/2019 12/10/2020UnitsVOCs (EPA TO-15)Acetone 38 37 28 24.2 20 12 11.0 1,700 18 16 7.73<0.808810 850 12 599 1,000 16 23.2 24.6 NEBenzene<0.260.27 J<0.160.364 J<0.26 <0.160.313 J<0.66 <0.16 <0.160.709 J<0.293 <0.66 <0.66 <0.160.537 J<0.663.0 0.441 J 0.466 J 121,3-Butadiene<0.32 <0.32 <0.19 <0.328 <0.32 <0.19 <0.328 <0.81 <0.19 <0.19 <0.328 <1.31 <0.81 <0.81 <0.19 <0.328 <0.81 <0.19 <0.328 <0.3283.12-Butanone (MEK) 110 110 3.3 2.63 7.0 J 5.7 2.96 9,400 140 130 1.40 J 189 8,200 8,500 5.3 4.56 9,200 8.7 2.85 3.22 35,000Carbon Disulfide<0.43 <0.43 <1.61.31 J<0.43 <1.60.610 J<1.1 <1.6 <1.60.972 JB<0.243 <1.1 <1.1 <1.6 <0.0608 <1.1 <1.61.81 JB 2.97 JB 4,900Carbon Tetrachloride<0.065 <0.065 <0.240.698 J<0.065 <0.240.717 J<0.065 <0.24 <0.24 <0.155 <0.621 <0.065 <0.065 <0.24 <0.155 <0.065 <0.24 <0.155 <0.15516Chloroform<0.36 <0.36 <0.26 <0.0864 <0.36 <0.260.757 J<0.911.5 J 1.6 J<0.0864 <0.345 <0.91 <0.91 <0.260.757 J<0.91 <0.260.454 J 0.620 J 4.1Chloroethane<0.52 <0.52 <0.38 <0.164 <0.52 <0.38 <0.164 <1.3 <0.38 <0.38 <0.164 <0.656 <1.3 <1.3 <0.38 <0.164 <1.3 <0.38 <0.164 <0.16428,000Chloromethane 0.82 J<0.28 <0.26 <0.0673 <0.28 <0.26 <0.0673 <0.70 <0.26 <0.26 <0.06730.809 J<0.70 <0.701.9 0.454 J<0.702.2 0.368 J 0.351 J 630Cyclohexane<0.49 <0.495.3 6.19 2.7 8.8 9.54<1.23.7 5.1 1.98 J<0.646 <1.2 <1.23.4 1.81 J<1.23.9 1.44 J 1.36 J 42,0001,3-Dichlorobenzene<0.62 <0.62 <0.21 <0.174 <0.62 <0.21 <0.174 <1.6 <0.21 <0.210.619 J 2.43 J<1.6 <1.6 <0.2130.0<1.6 <0.2133.0 33.7 NE1,1-Dichloroethane<0.25 <0.25 <0.47 <0.101 <0.25 <0.47 <0.101 <0.62 <0.47 <0.47 <0.101 <0.404 <0.62 <0.62 <0.47 <0.101 <0.62 <0.47 <0.101 <0.101581,2-Dichloroethane<0.31 <0.31 <0.22 <0.129 <0.31 <0.22 <0.129 <0.77 <0.22 <0.22 <0.129 <0.516 <0.77 <0.77 <0.22 <0.129 <0.77 <0.22 <0.129 <0.1293.6Dichlorodifluoromethane (Freon 12) 1.5 1.5 3.0 3.29<0.433.4 3.47<1.14.2 4.4 2.90 3.14 J<1.1 <1.13.5 4.60<1.13.2 2.83 2.90 7001,4-Dioxane<4.6 <4.6 <0.10 <0.435 <4.61.4 J<0.435 <12 <0.10 <0.10 <0.435 <1.74 <12 <12 <0.10 <0.435 <12 <0.10 <0.435 <0.43519Ethanol 44 51NA NA 19 NA NA <17 NA NA NA NA <17 <17 NA NA <17 NA NA NANEEthyl Acetate<0.549.5<0.25 <0.136 <0.541.2 J<0.136 <1.32.1 2.3<0.136 <0.544 <1.3 <1.3 <0.251.86<1.3 <0.25 <0.136 <0.136490Ethylbenzene<0.500.80 J 0.96 J 0.782 J<0.500.96 J 4.23<1.3 <0.19 <0.19 <0.106 <0.424 <1.3 <1.3 <0.190.382 J<1.30.96 J 0.352 J 0.434 J 374-Ethyltoluene<0.60 <0.601.9 J 1.25 J<0.60 <0.26 <0.128 <1.5 <0.26 <0.26 <0.128 <0.512 <1.5 <1.5 <0.26 <0.128 <1.5 <0.26 <0.128 <0.128NEHeptane<0.480.59 J<0.19 <0.143 <0.48 <0.19 <0.143 <1.2 <0.19 <0.19 <0.143 <0.572 <1.2 <1.2 <0.190.545 J<1.2 <0.19 <0.1430.381 J 2,800Hexane<1.2 <1.2 <0.250.916 J<1.2 <0.250.412 J 480 2.1 3.6<0.0472 <0.189 <3.1 <3.1 <0.25 <0.0472 <3.12.2<0.0472 <0.04724,9002-Hexanone (MBK)<0.48 <0.48 <0.263.98<0.481.7 J<0.285 <1.2 <0.26 <0.26 <0.285 <1.14 <1.2 <1.2 <0.26 <0.285 <1.20.98 J<0.285 <0.285210Isopropanol 5.6 J 9.7 J 18 15.9 2.2 J 4.7 J 2.64 J<2.34.5 J 4.0 J 2.31 J<0.557 <2.3 <2.35.9 18.7<2.36.7 1.06 J 1.53 J 1,400Methylene Chloride 3.2 J 7.8 6.5 1.52 J<0.843.9 0.854 J<2.16.9 5.7 0.955 J<1.95 <2.12.2 J 7.8 6.39<2.17.3 1.55 J 1.47 J 3,4004-Methyl-2-pentanone (MIBK)<0.431.3 0.98 J 2.02 J<0.43 <0.26 <0.121 <1.1 <0.26 <0.26 <0.121 <0.484 <1.1 <1.1 <0.26 <0.121 <1.1 <0.26 <0.121 <0.12121,000Naphthalene<0.80 <0.80 <1.04.60<0.801.5 J4.89<2.0 <1.0 <1.0 <0.183 <0.733 <2.0 <2.0 <1.0 <0.183 <2.0 <1.00.477 J 0.435 J 2.8Propene<0.64 <0.64 <0.14 <0.242 <0.64 <0.14 <0.242 <1.6 <0.14 <0.14 <0.242 <0.967 <1.6 <1.6 <0.14 <0.242 <1.6 <0.14 <0.242 <0.24221,000Styrene<0.53 <0.530.89 J 0.886 J<0.535.8<0.124 <1.3 <0.15 <0.15 <0.124 <0.496 <1.3 <1.3 <0.15 <0.124 <1.3 <0.15 <0.124 <0.1247,000Tetrachloroethene<0.11 <0.11 <0.440.570 J<0.11 <0.44 <0.181 <0.11 <0.44 <0.440.814 J<0.726 <0.11 <0.11 <0.44 <0.181 <0.11 <0.44 <0.1812.16 J 280Tetrahydrofuran 220 220 0.91 J 2.84 6.0 3.5 9.65 2,700 510 490 2.79 1,410 1,800 2,200 9.1 3.19 2,600 8.3 2.72 2.81 14,000Toluene 1.7 3.2 8.8 2.40 0.62 J 7.2 2.49<0.974.8 4.7 0.746 J 1.37 J 85 90 3.8 2.60 22 8.7 1.53 J 1.57 J 35,000Trichloroethene<0.081 <0.081 <0.27 <0.199 <0.081 <0.27 <0.199 <0.081 <0.27 <0.27 <0.199 <0.796 <0.081 <0.081 <0.27 <0.199 <0.081 <0.27 <0.1990.580 J 14Trichlorofluoromethane (Freon 11) 1.2 J 1.2 J 1.6 J 1.76 J 2.1 J 1.9 J 2.04 J<2.12.4 J 2.5 J 1.96 J 2.29 J<2.1 <2.11.9 J 5.05<2.11.9 J 2.03 J 2.02 J NE1,1,2-Trichloro-1,2,2-trifluoroethane (Freon 113)<1.2 <1.2 <0.530.766 J 3.1 J<0.530.720 J<2.9 <0.53 <0.53 <0.561 <2.24 <2.9 <2.9 <0.53 <0.0877 <2.9 <0.53 <0.561 <0.56135,0001,2,4-Trimethylbenzene 0.67 J 0.73 J 13 6.58<0.636.7 1.17 J<1.65.2 5.2 0.516 J<0.4403.7<1.65.3 0.767 J<1.65.6 0.993 J 1.08 J 4201,3,5-Trimethylbenzene<0.62 <0.623.3 2.42 J<0.62 <0.26 <0.236 <1.5 <0.26 <0.26 <0.236 <0.944 <1.5 <1.5 <0.26 <0.236 <1.5 <0.26 <0.236 <0.236420m&p-Xylene 1.3 J 1.7 8.6 3.23 J<1.006.9 17.5<2.55.1 J 5.2 J 0.899 J<0.868 <2.5 <2.55.5 J 1.61 J<2.57.3 1.26 J 1.74 J 700o-Xylene 0.90 1.1 3.7 1.74 J<0.542.4 3.08<1.42.1 J 2.1 J 0.412 J<0.628 <1.4 <1.42.2 0.647 J<1.42.8 0.617 J 0.790 J 700DEQ Risk Calculator2Acceptable Risk LevelsLICR (Resident)2.8 x 10-81.8 x 10-60.0 x 1006.5 x 10-72.1 x 10-60.06.2 x 10-80.0 x 1002.3 x 10-92.4 x 10-70.0 x 1002.8 x 10-7< 1 x 10-4Non-Carcinogenic HI (Resident) 0.015 0.058 0.002 0.026 0.0561.1 x 10-10.0032 0.0227.8 x 10-30.00719.1 x 10-21.3 x 10-2< 1.0Notes1) North Carolina Department of Environmental Quality (DEQ) Division of Waste Management (DWM) Vapor Intrusion Sub-Slab and Exterior Soil Gas Screening Levels (SGSLs) (July 2022) based upon TCR = 1 x 10-6 and THQ = 0.2.2) DEQ Risk Calculator dated July 2022 were used to calculate the risks for the samples collected in December 2021 and May 2022.Compound concentrations are reported in micrograms per cubic meter (µg/m3).Compound concentrations are reported to the laboratoy method detection limit.Only those compounds detected in at least one sample are shown in the table above.Laboratory analytical method shown in parentheses.Bold indicates concentration exceeds the Residential SGSL.LICR = Lifetime Incremental Carcinogenic Risk; HI = Hazard Index; TCR = Total Carcinogenic Risk; THQ = Total Hazard QuotientCumulative LICR and HI compared to DEQ and EPA acceptable risk levels for carcinogenic and non-carcinogenic risks. VOCs = Volatile Organic Compounds; NA = Not Analyzed ; NE = Not Established; EPA = Environmental Protection AgencyJ = compound was detected above the laboratory method detection limit, but below the laboratory reporting limit resulting in a laboratory estimated value.B = compound was detected in the associated method blank.SS-MP-9 / DUP SS-MP-12 / DUP-12/26/19 SS-MP-14 / SS-MP-DUPBuilding B5/11/2022Building SectionBuilding ASS-MP-15 / DUP-1 SS-MP-18Residential SGSL110/23/201912/10/2020 12/26/20194.6 x 10-84.0 x 10-76.5 x 10-100.0121.7 x 10-28.4 x 10-2µg/m34.2 x 10-70.018https://harthick.sharepoint.com/sites/MasterFiles-1/Shared Documents/AAA-Master Projects/Avalon Bay (AVA)/AVA-001 The Hub/Report/Tables/Tables 1 to 3, App. C - VIMP Summary Tables.xlsxAppendix C (Page 1 of 2)Hart & Hickman, PC Appendix CHistorical Sub-Slab Soil-Gas Analytical Data Summary Dunavant StreetCharlotte, North CarolinaBrownfields Project No. 19038-15-060H&H Project No. AVA-001Sample IDSample Date10/23/2019 12/9/2020 12/29/2021 10/23/2019 12/9/2020 12/29/2021 10/23/2019 12/10/2020 12/29/2021 10/23/2019 12/9/2020UnitsVOCs by TO-15Acetone 11 J 27 12.6 17 J 18 11.3 39 14 9.56 28 100 42.3 37.3 NEBenzene<0.260.67 J 0.323 J<0.260.77 J 0.387 J 5.6<0.160.955 J 0.68<0.160.553 J 0.454 J 121,3-Butadiene<0.32 <0.19 <0.328 <0.32 <0.19 <0.3281.2<0.19 <0.328 <0.32 <0.19 <0.328 <0.3283.12-Butanone (MEK) 11 J 11 8.50 32 19 7.66 19 J 3.2 1.97 14 J 14 3.31 3.10 35,000Carbon Disulfide<0.43 <1.60.710 J<0.431.6 J 1.22 J<0.432.1 J 1.17 J<0.434.8 J 1.01 J 0.732 J 4,900Carbon Tetrachloride<0.065 <0.24 <0.155 <0.065 <0.24 <0.155 <0.065 <0.24 <0.155 <0.065 <0.24 <0.155 <0.15516Chloroform<0.36 <0.26 <0.0864 <0.362.4 0.718 J<0.36 <0.261.26 J<0.362.3 J 0.469 J 0.439 J 4.1Chloroethane<0.52 <0.38 <0.164 <0.52 <0.38 <0.164 <0.52 <0.380.860 J<0.52 <0.38 <0.164 <0.16428,000Chloromethane<0.284.2<0.06730.78 J<0.26 <0.0673 <0.2813<0.0673 <0.28 <0.26 <0.0673 <0.0673630Cyclohexane 3.3 3.5 5.83<0.496.0 3.80 5.4 5.4<0.161 <0.498.1 4.56<0.16142,0001,3-Dichlorobenzene<0.62 <0.21 <0.174 <0.62 <0.21 <0.174 <0.62 <0.21 <0.174 <0.62 <0.21 <0.174 <0.174NE1,1-Dichloroethane<0.251.0 J<0.101 <0.25 <0.47 <0.101 <0.25 <0.47 <0.101 <0.25 <0.47 <0.101 <0.101581,2-Dichloroethane<0.31 <0.22 <0.129 <0.31 <0.22 <0.129 <0.31 <0.221.57 J<0.310.89 J<0.129 <0.1293.6Dichlorodifluoromethane (Freon 12)<0.433.2 3.53 1.5 3.0 3.56 1.6 3.3 3.51<0.433.0 3.69 3.45 7001,4-Dioxane<4.6 <0.10 <0.435 <4.6 <0.10 <0.435 <4.6 <0.10 <0.435 <4.6 <0.10 <0.435 <0.43519Ethanol11 JNANA11 JNANA59NANA18NANANANEEthyl Acetate<0.54 <0.25 <0.136 <0.542.9<0.1367.2 1.9<0.136 <0.544.5 5.25 4.90 490Ethylbenzene<0.50 <0.190.356 J<0.50 <0.190.677 J 1.5<0.192.38<0.50 <0.190.643 J 0.643 J 374-Ethyltoluene<0.60 <0.26 <0.128 <0.60 <0.26 <0.1280.61 J<0.261.01 J<0.60 <0.26 <0.128 <0.128NEHeptane<0.48 <0.19 <0.143 <0.48 <0.19 <0.1432.0<0.191.00 J<0.481.1 J<0.143 <0.1432,800Hexane<1.23.2 0.395 J<1.2 <0.250.317 J 2.8 J<0.250.659 J<1.21.3 J<0.0472 <0.04724,9002-Hexanone (MBK)<0.48 <0.26 <0.285 <0.48 <0.26 <0.285 <0.48 <0.26 <0.285 <0.481.0 J 4.09 4.03 210Isopropanol<0.905.4 3.43 J<0.906.0 6.93 8.8 J 7.7 4.62 J<0.9017 55.6 54.0 1,400Methylene Chloride<0.848.0 0.702 J<0.846.0 1.84 7.6 6.7 1.01 J<0.845.2 1.18 J 1.04 J 3,4004-Methyl-2-pentanone (MIBK)<0.43 <0.26 <0.1211.2<0.26 <0.1211.9<0.26 <0.121 <0.433.1 2.26 2.10 21,000Naphthalene<0.80 <1.04.13<0.80 <1.04.051.6<1.04.10<0.80 <1.04.41 4.482.8Propene<0.64 <0.14 <0.242 <0.64 <0.14 <0.2428.7 J<0.14 <0.242 <0.64 <0.14 <0.242 <0.24221,000Styrene<0.53 <0.15 <0.124 <0.53 <0.15 <0.1240.90<0.15 <0.124 <0.53 <0.150.520 J 0.562 J 7,000Tetrachloroethene<0.11 <0.44 <0.181 <0.20 <0.441.78 J<0.11 <0.440.583 J<0.11 <0.44 <0.181 <0.181280Tetrahydrofuran 28 27 52.2 21 170 125 16 0.83 J 52.9 5.0 3.0 1.52 1.04 J 14,000Toluene 0.45 J 3.8 1.53 J 0.99 39 2.74 7.7 8.2 5.29 1.8 13 2.43 2.15 35,000Trichloroethene<0.081 <0.270.613 J<0.081 <0.27 <0.199 <0.081 <0.27 <0.199 <0.081 <0.27 <0.199 <0.19914Trichlorofluoromethane (Freon 11) 1.2 J 3.1 2.97 1.2 J 1.7 J 2.04 J 1.1 J<0.432.05 J 1.2 J 1.7 J 2.19 J 2.14 J NE1,1,2-Trichloro-1,2,2-trifluoroethane (Freon 113)<1.2 <0.530.697 J<1.2 <0.530.782 J<1.2 <0.53 <0.561 <1.2 <0.530.828 J 0.759 J 35,0001,2,4-Trimethylbenzene<0.635.3 0.816 J 0.81 J 5.3 1.27 J 3.0 5.2 3.59<0.635.5 1.65 J 1.42 J 4201,3,5-Trimethylbenzene<0.62 <0.26 <0.236 <0.62 <0.26 <0.2360.85 J<0.260.782 J<0.62 <0.260.403 J<0.236 420m&p-Xylene<1.005.6 1.35 J 1.3 J 5.9 2.54 J 5.2 5.4 J 8.10 1.5 J 7.7 2.41 J 2.25 J 700o-Xylene<0.542.2 0.564 J<0.542.4 1.05 J 2.1 2.2 2.72<0.543.1 1.06 J 0.925 J 700DEQ Risk Calculator2Acceptable Risk LevelsLICR (Resident)0.0 x 1007.5 x 10-81.6 x 10-60.0 x 1006.6 x 10-71.7 x 10-61.5 x 10-62.0 x 10-92.4 x 10-65.7 x 10-88.1 x 10-7< 1 x 10-4Non-Carcinogenic HI (Resident) 0.00049 0.0095 0.052 0.002 0.012 0.046 0.048 0.012 0.055 0.0013 0.017 < 1.0Notes1) North Carolina Department of Environmental Quality (DEQ) Division of Waste Management (DWM) Vapor Intrusion Sub-Slab and Exterior Soil Gas Screening Levels (SGSLs) (July 2022) based upon TCR = 1 x 10-6 and THQ = 0.2.2) DEQ Risk Calculator dated July 2022 were used to calculate the risks for the samples collected in December 2021 and May 2022.Compound concentrations are reported in micrograms per cubic meter (µg/m3)Compound concentrations are reported to the laboratoy method detection limitOnly those compounds detected in at least one sample are shown in the table above.Laboratory analytical method shown in parenthesesBold indicates concentration exceeds the Residential SGSL.LICR = Lifetime Incremental Carcinogenic Risk; HI = Hazard Index; TCR = Total Carcinogenic Risk; THQ = Total Hazard QuotientCumulative LICR and HI compared to DEQ and EPA acceptable risk levels for carcinogenic and non-carcinogenic risks. VOCs = Volatile Organic Compounds; NA = Not Analyzed ; NE = Not Established; J = compound was detected above the laboratory method detection limit, but below the laboratory reporting limit resulting in a laboratory estimated value.B = compound was detected in the associated method blank.Residential SGSL1Building CBuilding DSS-MP-4 SS-MP-7 SS-MP-1 SS-MP-6 / MP-DUP - 12/29/2021Building Section12/29/20211.8 x 10-6µg/m30.061https://harthick.sharepoint.com/sites/MasterFiles-1/Shared Documents/AAA-Master Projects/Avalon Bay (AVA)/AVA-001 The Hub/Report/Tables/Tables 1 to 3, App. C - VIMP Summary Tables.xlsxAppendix C (Page 2 of 2)Hart & Hickman, PC Appendix D Laboratory Analytical Reports Laboratory's liability in any claim relating to analyses performed shall be limited to, at laboratory's option, repeating the analysis in question at laboratory's expense, or the refund of the charges paid for performance of said analysis. 1/7/2022 Hart & Hickman (Charlotte) Alexis McKenzie 2923 South Tryon St. Ste 100 Charlotte, NC, 28203 Ref: Analytical Testing Lab Report Number: 21-363-0016 Client Project Description: RMR-002 Dear Alexis McKenzie: Waypoint Analytical, LLC (Charlotte) received sample(s) on 12/29/2021 for the analyses presented in the following report. The above referenced project has been analyzed per your instructions. The analyses were performed in accordance with the applicable analytical method. The analytical data has been validated using standard quality control measures performed as required by the analytical method. Quality Assurance, method validations, instrumentation maintenance and calibration for all parameters were performed in accordance with guidelines established by the USEPA (including 40 CFR 136 Method Update Rule May 2021) unless otherwise indicated. Certain parameters (chlorine, pH, dissolved oxygen, sulfite...) are required to be analyzed within 15 minutes of sampling. Usually, but not always, any field parameter analyzed at the laboratory is outside of this holding time. Refer to sample analysis time for confirmation of holding time compliance. The results are shown on the attached Report of Analysis(s). Results for solid matrices are reported on an as-received basis unless otherwise indicated. This report shall not be reproduced except in full and relates only to the samples included in this report. Please do not hesitate to contact me or client services if you have any questions or need additional information. Sincerely, Angela D Overcash Senior Project Manager Page 1 of 40 Certification Summary Laboratory ID: WP CNC: Waypoint Analytical Carolina, Inc. (C), Charlotte, NC State Program Lab ID Expiration Date 07/31/202237735State ProgramNorth Carolina 12/31/2022402State ProgramNorth Carolina 07/31/202299012State ProgramSouth Carolina 12/31/202199012State ProgramSouth Carolina Page 1 of 1 00016/21-363-0016 Page 2 of 40 Report Number: Sample Summary Table Client Project Description: 21-363-0016 RMR-002 Lab No Client Sample ID Matrix Date Collected Date Received 12/29/2021 09:07Air 91256 MP-6 12/29/2021 15:10 12/29/2021 09:07Air 91257 MP-DUP 12/29/2021 15:10 12/29/2021 10:58Air 91258 MP-15 12/29/2021 15:10 12/29/2021 09:47Air 91259 MP-7 12/29/2021 15:10 12/29/2021 12:16Air 91260 MP-4 12/29/2021 15:10 12/29/2021 11:27Air 91261 MP-18 12/29/2021 15:10 12/29/2021 10:15Air 91262 MP-1 12/29/2021 15:10 Page 3 of 40 Summary of Detected Analytes QualifiersAnalyzedUnitsResult Report Number: Client Sample ID Method Parameters Lab Sample ID 21-363-0016 Report Limit Project:RMR-002 V 91256MP-6 42.3 01/06/2022 08:40TO-15 Acetone µg/m3 0.202 J0.553 01/06/2022 08:40TO-15 Benzene µg/m3 0.0733 J1.01 01/06/2022 08:40TO-15 Carbon Disulfide µg/m3 0.0608 J0.469 01/06/2022 08:40TO-15 Chloroform µg/m3 0.0864 4.56 01/06/2022 08:40TO-15 Cyclohexane µg/m3 0.161 3.69 01/06/2022 08:40TO-15 Dichlorodifluoromethane µg/m3 0.134 5.25 01/06/2022 08:40TO-15 Ethyl Acetate µg/m3 0.136 J0.643 01/06/2022 08:40TO-15 Ethylbenzene µg/m3 0.106 J0.828 01/06/2022 08:40TO-15 1,1,2-Trichloro-1,2,2-trifluoroethane µg/m3 0.561 4.09 01/06/2022 08:40TO-15 2-Hexanone µg/m3 0.285 55.6 01/06/2022 08:40TO-15 Isopropyl Alchohol µg/m3 0.139 3.31 01/06/2022 08:40TO-15 Methyl Ethyl Ketone (MEK)µg/m3 0.224 2.26 01/06/2022 08:40TO-15 4-Methyl-2-Pentanone µg/m3 0.121 J1.18 01/06/2022 08:40TO-15 Methylene Chloride µg/m3 0.489 4.41 01/06/2022 08:40TO-15 Naphthalene µg/m3 0.183 J0.520 01/06/2022 08:40TO-15 Styrene µg/m3 0.124 1.52 01/06/2022 08:40TO-15 Tetrahydrofuran µg/m3 0.107 2.43 01/06/2022 08:40TO-15 Toluene µg/m3 0.0901 J2.19 01/06/2022 08:40TO-15 Trichlorofluoromethane µg/m3 0.130 J1.65 01/06/2022 08:40TO-15 1,2,4-Trimethylbenzene µg/m3 0.110 J0.403 01/06/2022 08:40TO-15 1,3,5-Trimethylbenzene µg/m3 0.236 J1.06 01/06/2022 08:40TO-15 o-Xylene µg/m3 0.157 J2.41 01/06/2022 08:40TO-15 m,p-Xylene µg/m3 0.217 J3.47 01/06/2022 08:40TO-15 Xylene (Total)µg/m3 0.157 V 91257MP-DUP 37.3 01/06/2022 09:34TO-15 Acetone µg/m3 0.202 J0.454 01/06/2022 09:34TO-15 Benzene µg/m3 0.0733 J0.732 01/06/2022 09:34TO-15 Carbon Disulfide µg/m3 0.0608 J0.439 01/06/2022 09:34TO-15 Chloroform µg/m3 0.0864 3.45 01/06/2022 09:34TO-15 Dichlorodifluoromethane µg/m3 0.134 4.90 01/06/2022 09:34TO-15 Ethyl Acetate µg/m3 0.136 J0.643 01/06/2022 09:34TO-15 Ethylbenzene µg/m3 0.106 J0.759 01/06/2022 09:34TO-15 1,1,2-Trichloro-1,2,2-trifluoroethane µg/m3 0.561 4.03 01/06/2022 09:34TO-15 2-Hexanone µg/m3 0.285 54.0 01/06/2022 09:34TO-15 Isopropyl Alchohol µg/m3 0.139 3.10 01/06/2022 09:34TO-15 Methyl Ethyl Ketone (MEK)µg/m3 0.224 Page 4 of 40 Summary of Detected Analytes QualifiersAnalyzedUnitsResult Report Number: Client Sample ID Method Parameters Lab Sample ID 21-363-0016 Report Limit Project:RMR-002 V 91257MP-DUP 2.10 01/06/2022 09:34TO-15 4-Methyl-2-Pentanone µg/m3 0.121 J1.04 01/06/2022 09:34TO-15 Methylene Chloride µg/m3 0.489 4.48 01/06/2022 09:34TO-15 Naphthalene µg/m3 0.183 J0.562 01/06/2022 09:34TO-15 Styrene µg/m3 0.124 J1.04 01/06/2022 09:34TO-15 Tetrahydrofuran µg/m3 0.107 2.15 01/06/2022 09:34TO-15 Toluene µg/m3 0.0901 J2.14 01/06/2022 09:34TO-15 Trichlorofluoromethane µg/m3 0.130 J1.42 01/06/2022 09:34TO-15 1,2,4-Trimethylbenzene µg/m3 0.110 J0.925 01/06/2022 09:34TO-15 o-Xylene µg/m3 0.157 J2.25 01/06/2022 09:34TO-15 m,p-Xylene µg/m3 0.217 J3.18 01/06/2022 09:34TO-15 Xylene (Total)µg/m3 0.157 V 91258MP-15 24.2 01/06/2022 10:25TO-15 Acetone µg/m3 0.202 J0.364 01/06/2022 10:25TO-15 Benzene µg/m3 0.0733 J1.31 01/06/2022 10:25TO-15 Carbon Disulfide µg/m3 0.0608 J0.698 01/06/2022 10:25TO-15 Carbon Tetrachloride µg/m3 0.155 6.19 01/06/2022 10:25TO-15 Cyclohexane µg/m3 0.161 3.29 01/06/2022 10:25TO-15 Dichlorodifluoromethane µg/m3 0.134 J0.782 01/06/2022 10:25TO-15 Ethylbenzene µg/m3 0.106 J1.25 01/06/2022 10:25TO-15 4-Ethyltoluene µg/m3 0.128 J0.766 01/06/2022 10:25TO-15 1,1,2-Trichloro-1,2,2-trifluoroethane µg/m3 0.561 J0.916 01/06/2022 10:25TO-15 n-Hexane µg/m3 0.0472 3.98 01/06/2022 10:25TO-15 2-Hexanone µg/m3 0.285 15.9 01/06/2022 10:25TO-15 Isopropyl Alchohol µg/m3 0.139 2.63 01/06/2022 10:25TO-15 Methyl Ethyl Ketone (MEK)µg/m3 0.224 J2.02 01/06/2022 10:25TO-15 4-Methyl-2-Pentanone µg/m3 0.121 J1.52 01/06/2022 10:25TO-15 Methylene Chloride µg/m3 0.489 4.60 01/06/2022 10:25TO-15 Naphthalene µg/m3 0.183 J0.886 01/06/2022 10:25TO-15 Styrene µg/m3 0.124 J0.570 01/06/2022 10:25TO-15 Tetrachloroethene µg/m3 0.181 2.84 01/06/2022 10:25TO-15 Tetrahydrofuran µg/m3 0.107 2.40 01/06/2022 10:25TO-15 Toluene µg/m3 0.0901 J1.76 01/06/2022 10:25TO-15 Trichlorofluoromethane µg/m3 0.130 6.58 01/06/2022 10:25TO-15 1,2,4-Trimethylbenzene µg/m3 0.110 J2.42 01/06/2022 10:25TO-15 1,3,5-Trimethylbenzene µg/m3 0.236 J1.74 01/06/2022 10:25TO-15 o-Xylene µg/m3 0.157 Page 5 of 40 Summary of Detected Analytes QualifiersAnalyzedUnitsResult Report Number: Client Sample ID Method Parameters Lab Sample ID 21-363-0016 Report Limit Project:RMR-002 V 91258MP-15 J3.23 01/06/2022 10:25TO-15 m,p-Xylene µg/m3 0.217 J4.97 01/06/2022 10:25TO-15 Xylene (Total)µg/m3 0.157 V 91259MP-7 11.3 01/06/2022 11:20TO-15 Acetone µg/m3 0.202 J0.387 01/06/2022 11:20TO-15 Benzene µg/m3 0.0733 J1.22 01/06/2022 11:20TO-15 Carbon Disulfide µg/m3 0.0608 J0.718 01/06/2022 11:20TO-15 Chloroform µg/m3 0.0864 3.80 01/06/2022 11:20TO-15 Cyclohexane µg/m3 0.161 3.56 01/06/2022 11:20TO-15 Dichlorodifluoromethane µg/m3 0.134 J0.677 01/06/2022 11:20TO-15 Ethylbenzene µg/m3 0.106 J0.782 01/06/2022 11:20TO-15 1,1,2-Trichloro-1,2,2-trifluoroethane µg/m3 0.561 J0.317 01/06/2022 11:20TO-15 n-Hexane µg/m3 0.0472 6.93 01/06/2022 11:20TO-15 Isopropyl Alchohol µg/m3 0.139 7.66 01/06/2022 11:20TO-15 Methyl Ethyl Ketone (MEK)µg/m3 0.224 1.84 01/06/2022 11:20TO-15 Methylene Chloride µg/m3 0.489 4.05 01/06/2022 11:20TO-15 Naphthalene µg/m3 0.183 J1.78 01/06/2022 11:20TO-15 Tetrachloroethene µg/m3 0.181 125 01/06/2022 11:20TO-15 Tetrahydrofuran µg/m3 0.107 2.74 01/06/2022 11:20TO-15 Toluene µg/m3 0.0901 J2.04 01/06/2022 11:20TO-15 Trichlorofluoromethane µg/m3 0.130 J1.27 01/06/2022 11:20TO-15 1,2,4-Trimethylbenzene µg/m3 0.110 J1.05 01/06/2022 11:20TO-15 o-Xylene µg/m3 0.157 J2.54 01/06/2022 11:20TO-15 m,p-Xylene µg/m3 0.217 J3.59 01/06/2022 11:20TO-15 Xylene (Total)µg/m3 0.157 V 91260MP-4 12.6 01/06/2022 12:13TO-15 Acetone µg/m3 0.202 J0.323 01/06/2022 12:13TO-15 Benzene µg/m3 0.0733 J0.710 01/06/2022 12:13TO-15 Carbon Disulfide µg/m3 0.0608 5.83 01/06/2022 12:13TO-15 Cyclohexane µg/m3 0.161 3.53 01/06/2022 12:13TO-15 Dichlorodifluoromethane µg/m3 0.134 J0.356 01/06/2022 12:13TO-15 Ethylbenzene µg/m3 0.106 J0.697 01/06/2022 12:13TO-15 1,1,2-Trichloro-1,2,2-trifluoroethane µg/m3 0.561 J0.395 01/06/2022 12:13TO-15 n-Hexane µg/m3 0.0472 J3.43 01/06/2022 12:13TO-15 Isopropyl Alchohol µg/m3 0.139 8.50 01/06/2022 12:13TO-15 Methyl Ethyl Ketone (MEK)µg/m3 0.224 J0.702 01/06/2022 12:13TO-15 Methylene Chloride µg/m3 0.489 Page 6 of 40 Summary of Detected Analytes QualifiersAnalyzedUnitsResult Report Number: Client Sample ID Method Parameters Lab Sample ID 21-363-0016 Report Limit Project:RMR-002 V 91260MP-4 4.13 01/06/2022 12:13TO-15 Naphthalene µg/m3 0.183 52.2 01/06/2022 12:13TO-15 Tetrahydrofuran µg/m3 0.107 J1.53 01/06/2022 12:13TO-15 Toluene µg/m3 0.0901 J0.613 01/06/2022 12:13TO-15 Trichloroethene µg/m3 0.199 2.97 01/06/2022 12:13TO-15 Trichlorofluoromethane µg/m3 0.130 J0.816 01/06/2022 12:13TO-15 1,2,4-Trimethylbenzene µg/m3 0.110 J0.564 01/06/2022 12:13TO-15 o-Xylene µg/m3 0.157 J1.35 01/06/2022 12:13TO-15 m,p-Xylene µg/m3 0.217 J1.91 01/06/2022 12:13TO-15 Xylene (Total)µg/m3 0.157 V 91261MP-18 11.0 01/06/2022 13:05TO-15 Acetone µg/m3 0.202 J0.313 01/06/2022 13:05TO-15 Benzene µg/m3 0.0733 J0.610 01/06/2022 13:05TO-15 Carbon Disulfide µg/m3 0.0608 J0.717 01/06/2022 13:05TO-15 Carbon Tetrachloride µg/m3 0.155 J0.757 01/06/2022 13:05TO-15 Chloroform µg/m3 0.0864 9.54 01/06/2022 13:05TO-15 Cyclohexane µg/m3 0.161 3.47 01/06/2022 13:05TO-15 Dichlorodifluoromethane µg/m3 0.134 4.23 01/06/2022 13:05TO-15 Ethylbenzene µg/m3 0.106 J0.720 01/06/2022 13:05TO-15 1,1,2-Trichloro-1,2,2-trifluoroethane µg/m3 0.561 J0.412 01/06/2022 13:05TO-15 n-Hexane µg/m3 0.0472 J2.64 01/06/2022 13:05TO-15 Isopropyl Alchohol µg/m3 0.139 2.96 01/06/2022 13:05TO-15 Methyl Ethyl Ketone (MEK)µg/m3 0.224 J0.854 01/06/2022 13:05TO-15 Methylene Chloride µg/m3 0.489 4.89 01/06/2022 13:05TO-15 Naphthalene µg/m3 0.183 9.65 01/06/2022 13:05TO-15 Tetrahydrofuran µg/m3 0.107 2.49 01/06/2022 13:05TO-15 Toluene µg/m3 0.0901 J2.04 01/06/2022 13:05TO-15 Trichlorofluoromethane µg/m3 0.130 J1.17 01/06/2022 13:05TO-15 1,2,4-Trimethylbenzene µg/m3 0.110 3.08 01/06/2022 13:05TO-15 o-Xylene µg/m3 0.157 17.5 01/06/2022 13:05TO-15 m,p-Xylene µg/m3 0.217 20.6 01/06/2022 13:05TO-15 Xylene (Total)µg/m3 0.157 V 91262MP-1 9.56 01/06/2022 13:59TO-15 Acetone µg/m3 0.202 J0.955 01/06/2022 13:59TO-15 Benzene µg/m3 0.0733 J1.17 01/06/2022 13:59TO-15 Carbon Disulfide µg/m3 0.0608 J0.860 01/06/2022 13:59TO-15 Chloroethane µg/m3 0.164 Page 7 of 40 Summary of Detected Analytes QualifiersAnalyzedUnitsResult Report Number: Client Sample ID Method Parameters Lab Sample ID 21-363-0016 Report Limit Project:RMR-002 V 91262MP-1 J1.26 01/06/2022 13:59TO-15 Chloroform µg/m3 0.0864 3.51 01/06/2022 13:59TO-15 Dichlorodifluoromethane µg/m3 0.134 J1.57 01/06/2022 13:59TO-15 1,2-Dichloroethane µg/m3 0.129 2.38 01/06/2022 13:59TO-15 Ethylbenzene µg/m3 0.106 J1.01 01/06/2022 13:59TO-15 4-Ethyltoluene µg/m3 0.128 J1.00 01/06/2022 13:59TO-15 Heptane µg/m3 0.143 J0.659 01/06/2022 13:59TO-15 n-Hexane µg/m3 0.0472 J4.62 01/06/2022 13:59TO-15 Isopropyl Alchohol µg/m3 0.139 1.97 01/06/2022 13:59TO-15 Methyl Ethyl Ketone (MEK)µg/m3 0.224 J1.01 01/06/2022 13:59TO-15 Methylene Chloride µg/m3 0.489 4.10 01/06/2022 13:59TO-15 Naphthalene µg/m3 0.183 J0.583 01/06/2022 13:59TO-15 Tetrachloroethene µg/m3 0.181 52.9 01/06/2022 13:59TO-15 Tetrahydrofuran µg/m3 0.107 5.29 01/06/2022 13:59TO-15 Toluene µg/m3 0.0901 J2.05 01/06/2022 13:59TO-15 Trichlorofluoromethane µg/m3 0.130 3.59 01/06/2022 13:59TO-15 1,2,4-Trimethylbenzene µg/m3 0.110 J0.782 01/06/2022 13:59TO-15 1,3,5-Trimethylbenzene µg/m3 0.236 2.72 01/06/2022 13:59TO-15 o-Xylene µg/m3 0.157 8.10 01/06/2022 13:59TO-15 m,p-Xylene µg/m3 0.217 10.8 01/06/2022 13:59TO-15 Xylene (Total)µg/m3 0.157 Page 8 of 40 , REPORT OF ANALYSISReport Number : Project Information : NC 28203 21-363-0016 01102 Hart & Hickman (Charlotte) 2923 South Tryon St. Ste 100 Alexis McKenzie Charlotte Received : 12/29/2021 RMR-002 Report Date : 01/07/2022 Sample ID : Lab No : Sampled:MP-6 91256 Matrix: 12/29/2021 9:07 Air Analytical Method: Prep Method: Test Results Units MDL MQL By Analytical Batch Date / Time Analyzed DF TO-15 Prep TO-15 Prep Batch(es):V13532 01/06/22 08:00 42.3 µg/m3 0.202 4.75Acetone 1 01/06/22 08:40 V13533ENM 0.553 J µg/m3 0.0733 1.60Benzene 1 01/06/22 08:40 V13533ENM <0.148 µg/m3 0.148 10.4Benzyl Chloride 1 01/06/22 08:40 V13533ENM <0.150 µg/m3 0.150 3.35Bromodichloromethane 1 01/06/22 08:40 V13533ENM <0.153 µg/m3 0.153 5.17Bromoform 1 01/06/22 08:40 V13533ENM <0.115 µg/m3 0.115 1.94Bromomethane 1 01/06/22 08:40 V13533ENM <0.328 µg/m3 0.328 1.111,3-Butadiene 1 01/06/22 08:40 V13533ENM 1.01 J µg/m3 0.0608 6.23Carbon Disulfide 1 01/06/22 08:40 V13533ENM <0.155 µg/m3 0.155 3.15 Carbon Tetrachloride 1 01/06/22 08:40 V13533ENM <0.107 µg/m3 0.107 2.30Chlorobenzene 1 01/06/22 08:40 V13533ENM <0.208 µg/m3 0.208 4.26Chlorodibromomethane 1 01/06/22 08:40 V13533ENM <0.164 µg/m3 0.164 1.32Chloroethane 1 01/06/22 08:40 V13533ENM 0.469 J µg/m3 0.0864 2.44Chloroform 1 01/06/22 08:40 V13533ENM <0.0673 µg/m3 0.0673 1.03Chloromethane 1 01/06/22 08:40 V13533ENM 4.56 µg/m3 0.161 3.44Cyclohexane 1 01/06/22 08:40 V13533ENM <0.151 µg/m3 0.151 3.84 1,2-Dibromoethane 1 01/06/22 08:40 V13533ENM <0.0963 µg/m3 0.0963 3.011,2-Dichlorobenzene 1 01/06/22 08:40 V13533ENM <0.174 µg/m3 0.174 12.01,3-Dichlorobenzene 1 01/06/22 08:40 V13533ENM <0.186 µg/m3 0.186 3.011,4-Dichlorobenzene 1 01/06/22 08:40 V13533ENM 3.69 µg/m3 0.134 2.47Dichlorodifluoromethane 1 01/06/22 08:40 V13533ENM <0.101 µg/m3 0.101 2.021,1-Dichloroethane 1 01/06/22 08:40 V13533ENM <0.129 µg/m3 0.129 2.021,2-Dichloroethane 1 01/06/22 08:40 V13533ENM Qualifiers/ Definitions Estimated valueJDilution FactorDF Method Quantitation LimitMQL Page 9 of 40 , REPORT OF ANALYSISReport Number : Project Information : NC 28203 21-363-0016 01102 Hart & Hickman (Charlotte) 2923 South Tryon St. Ste 100 Alexis McKenzie Charlotte Received : 12/29/2021 RMR-002 Report Date : 01/07/2022 Sample ID : Lab No : Sampled:MP-6 91256 Matrix: 12/29/2021 9:07 Air Analytical Method: Prep Method: Test Results Units MDL MQL By Analytical Batch Date / Time Analyzed DF TO-15 Prep TO-15 Prep Batch(es):V13532 01/06/22 08:00 <0.107 µg/m3 0.107 1.981,1-Dichloroethene 1 01/06/22 08:40 V13533ENM <0.0955 µg/m3 0.0955 1.98cis-1,2-Dichloroethene 1 01/06/22 08:40 V13533ENM <0.108 µg/m3 0.108 1.98trans-1,2-Dichloroethene 1 01/06/22 08:40 V13533ENM <0.205 µg/m3 0.205 2.311,2-Dichloropropane 1 01/06/22 08:40 V13533ENM <0.623 µg/m3 0.623 3.501,2-Dichlorotetrafluoroethane 1 01/06/22 08:40 V13533ENM <0.178 µg/m3 0.178 2.27cis-1,3-Dichloropropene 1 01/06/22 08:40 V13533ENM <0.178 µg/m3 0.178 2.27trans-1,3-Dichloropropene 1 01/06/22 08:40 V13533ENM <0.435 µg/m3 0.435 1.801,4-Dioxane 1 01/06/22 08:40 V13533ENM 5.25 µg/m3 0.136 1.80 Ethyl Acetate 1 01/06/22 08:40 V13533ENM 0.643 J µg/m3 0.106 2.17Ethylbenzene 1 01/06/22 08:40 V13533ENM <0.128 µg/m3 0.128 2.464-Ethyltoluene 1 01/06/22 08:40 V13533ENM 0.828 J µg/m3 0.561 3.831,1,2-Trichloro-1,2,2-trifluoroethane 1 01/06/22 08:40 V13533ENM <0.143 µg/m3 0.143 2.05Heptane 1 01/06/22 08:40 V13533ENM <0.330 µg/m3 0.330 5.33Hexachlorobutadiene 1 01/06/22 08:40 V13533ENM <0.0472 µg/m3 0.0472 1.76n-Hexane 1 01/06/22 08:40 V13533ENM 4.09 µg/m3 0.285 2.05 2-Hexanone 1 01/06/22 08:40 V13533ENM 55.6 µg/m3 0.139 4.92Isopropyl Alchohol 1 01/06/22 08:40 V13533ENM 3.31 µg/m3 0.224 1.47Methyl Ethyl Ketone (MEK)1 01/06/22 08:40 V13533ENM <0.0336 µg/m3 0.0336 1.80Methyl tert-butyl ether (MTBE)1 01/06/22 08:40 V13533ENM 2.26 µg/m3 0.121 2.054-Methyl-2-Pentanone 1 01/06/22 08:40 V13533ENM 1.18 J µg/m3 0.489 1.74Methylene Chloride 1 01/06/22 08:40 V13533ENM 4.41 µg/m3 0.183 2.62Naphthalene 1 01/06/22 08:40 V13533ENM Qualifiers/ Definitions Estimated valueJDilution FactorDF Method Quantitation LimitMQL Page 10 of 40 , REPORT OF ANALYSISReport Number : Project Information : NC 28203 21-363-0016 01102 Hart & Hickman (Charlotte) 2923 South Tryon St. Ste 100 Alexis McKenzie Charlotte Received : 12/29/2021 RMR-002 Report Date : 01/07/2022 Sample ID : Lab No : Sampled:MP-6 91256 Matrix: 12/29/2021 9:07 Air Analytical Method: Prep Method: Test Results Units MDL MQL By Analytical Batch Date / Time Analyzed DF TO-15 Prep TO-15 Prep Batch(es):V13532 01/06/22 08:00 <0.242 µg/m3 0.242 0.861Propene 1 01/06/22 08:40 V13533ENM 0.520 J µg/m3 0.124 2.13Styrene 1 01/06/22 08:40 V13533ENM <0.104 µg/m3 0.104 3.431,1,2,2-Tetrachloroethane 1 01/06/22 08:40 V13533ENM <0.181 µg/m3 0.181 3.39Tetrachloroethene 1 01/06/22 08:40 V13533ENM 1.52 µg/m3 0.107 1.47Tetrahydrofuran 1 01/06/22 08:40 V13533ENM 2.43 µg/m3 0.0901 1.88Toluene 1 01/06/22 08:40 V13533ENM <0.209 µg/m3 0.209 3.711,2,4-Trichlorobenzene 1 01/06/22 08:40 V13533ENM <0.144 µg/m3 0.144 2.731,1,1-Trichloroethane 1 01/06/22 08:40 V13533ENM <0.0877 µg/m3 0.0877 2.73 1,1,2-Trichloroethane 1 01/06/22 08:40 V13533ENM <0.199 µg/m3 0.199 2.15Trichloroethene 1 01/06/22 08:40 V13533ENM 2.19 J µg/m3 0.130 2.81Trichlorofluoromethane 1 01/06/22 08:40 V13533ENM 1.65 J µg/m3 0.110 2.461,2,4-Trimethylbenzene 1 01/06/22 08:40 V13533ENM 0.403 J µg/m3 0.236 2.461,3,5-Trimethylbenzene 1 01/06/22 08:40 V13533ENM <0.224 µg/m3 0.224 1.76Vinyl Acetate 1 01/06/22 08:40 V13533ENM <0.127 µg/m3 0.127 1.28Vinyl Chloride 1 01/06/22 08:40 V13533ENM 1.06 J µg/m3 0.157 2.17 o-Xylene 1 01/06/22 08:40 V13533ENM 2.41 J µg/m3 0.217 5.65m,p-Xylene 1 01/06/22 08:40 V13533ENM 3.47 J µg/m3 0.157 2.17Xylene (Total)1 01/06/22 08:40 V13533 Surrogate: 4-Bromofluorobenzene 92.5 Limits: 70-130%01/06/22 08:401 ENM V13533 Qualifiers/ Definitions Estimated valueJDilution FactorDF Method Quantitation LimitMQL Page 11 of 40 , REPORT OF ANALYSISReport Number : Project Information : NC 28203 21-363-0016 01102 Hart & Hickman (Charlotte) 2923 South Tryon St. Ste 100 Alexis McKenzie Charlotte Received : 12/29/2021 RMR-002 Report Date : 01/07/2022 Sample ID : Lab No : Sampled:MP-DUP 91257 Matrix: 12/29/2021 9:07 Air Analytical Method: Prep Method: Test Results Units MDL MQL By Analytical Batch Date / Time Analyzed DF TO-15 Prep TO-15 Prep Batch(es):V13532 01/06/22 08:00 37.3 µg/m3 0.202 4.75Acetone 1 01/06/22 09:34 V13533ENM 0.454 J µg/m3 0.0733 1.60Benzene 1 01/06/22 09:34 V13533ENM <0.148 µg/m3 0.148 10.4Benzyl Chloride 1 01/06/22 09:34 V13533ENM <0.150 µg/m3 0.150 3.35Bromodichloromethane 1 01/06/22 09:34 V13533ENM <0.153 µg/m3 0.153 5.17Bromoform 1 01/06/22 09:34 V13533ENM <0.115 µg/m3 0.115 1.94Bromomethane 1 01/06/22 09:34 V13533ENM <0.328 µg/m3 0.328 1.111,3-Butadiene 1 01/06/22 09:34 V13533ENM 0.732 J µg/m3 0.0608 6.23Carbon Disulfide 1 01/06/22 09:34 V13533ENM <0.155 µg/m3 0.155 3.15 Carbon Tetrachloride 1 01/06/22 09:34 V13533ENM <0.107 µg/m3 0.107 2.30Chlorobenzene 1 01/06/22 09:34 V13533ENM <0.208 µg/m3 0.208 4.26Chlorodibromomethane 1 01/06/22 09:34 V13533ENM <0.164 µg/m3 0.164 1.32Chloroethane 1 01/06/22 09:34 V13533ENM 0.439 J µg/m3 0.0864 2.44Chloroform 1 01/06/22 09:34 V13533ENM <0.0673 µg/m3 0.0673 1.03Chloromethane 1 01/06/22 09:34 V13533ENM <0.161 µg/m3 0.161 3.44Cyclohexane 1 01/06/22 09:34 V13533ENM <0.151 µg/m3 0.151 3.84 1,2-Dibromoethane 1 01/06/22 09:34 V13533ENM <0.0963 µg/m3 0.0963 3.011,2-Dichlorobenzene 1 01/06/22 09:34 V13533ENM <0.174 µg/m3 0.174 12.01,3-Dichlorobenzene 1 01/06/22 09:34 V13533ENM <0.186 µg/m3 0.186 3.011,4-Dichlorobenzene 1 01/06/22 09:34 V13533ENM 3.45 µg/m3 0.134 2.47Dichlorodifluoromethane 1 01/06/22 09:34 V13533ENM <0.101 µg/m3 0.101 2.021,1-Dichloroethane 1 01/06/22 09:34 V13533ENM <0.129 µg/m3 0.129 2.021,2-Dichloroethane 1 01/06/22 09:34 V13533ENM Qualifiers/ Definitions Estimated valueJDilution FactorDF Method Quantitation LimitMQL Page 12 of 40 , REPORT OF ANALYSISReport Number : Project Information : NC 28203 21-363-0016 01102 Hart & Hickman (Charlotte) 2923 South Tryon St. Ste 100 Alexis McKenzie Charlotte Received : 12/29/2021 RMR-002 Report Date : 01/07/2022 Sample ID : Lab No : Sampled:MP-DUP 91257 Matrix: 12/29/2021 9:07 Air Analytical Method: Prep Method: Test Results Units MDL MQL By Analytical Batch Date / Time Analyzed DF TO-15 Prep TO-15 Prep Batch(es):V13532 01/06/22 08:00 <0.107 µg/m3 0.107 1.981,1-Dichloroethene 1 01/06/22 09:34 V13533ENM <0.0955 µg/m3 0.0955 1.98cis-1,2-Dichloroethene 1 01/06/22 09:34 V13533ENM <0.108 µg/m3 0.108 1.98trans-1,2-Dichloroethene 1 01/06/22 09:34 V13533ENM <0.205 µg/m3 0.205 2.311,2-Dichloropropane 1 01/06/22 09:34 V13533ENM <0.623 µg/m3 0.623 3.501,2-Dichlorotetrafluoroethane 1 01/06/22 09:34 V13533ENM <0.178 µg/m3 0.178 2.27cis-1,3-Dichloropropene 1 01/06/22 09:34 V13533ENM <0.178 µg/m3 0.178 2.27trans-1,3-Dichloropropene 1 01/06/22 09:34 V13533ENM <0.435 µg/m3 0.435 1.801,4-Dioxane 1 01/06/22 09:34 V13533ENM 4.90 µg/m3 0.136 1.80 Ethyl Acetate 1 01/06/22 09:34 V13533ENM 0.643 J µg/m3 0.106 2.17Ethylbenzene 1 01/06/22 09:34 V13533ENM <0.128 µg/m3 0.128 2.464-Ethyltoluene 1 01/06/22 09:34 V13533ENM 0.759 J µg/m3 0.561 3.831,1,2-Trichloro-1,2,2-trifluoroethane 1 01/06/22 09:34 V13533ENM <0.143 µg/m3 0.143 2.05Heptane 1 01/06/22 09:34 V13533ENM <0.330 µg/m3 0.330 5.33Hexachlorobutadiene 1 01/06/22 09:34 V13533ENM <0.0472 µg/m3 0.0472 1.76n-Hexane 1 01/06/22 09:34 V13533ENM 4.03 µg/m3 0.285 2.05 2-Hexanone 1 01/06/22 09:34 V13533ENM 54.0 µg/m3 0.139 4.92Isopropyl Alchohol 1 01/06/22 09:34 V13533ENM 3.10 µg/m3 0.224 1.47Methyl Ethyl Ketone (MEK)1 01/06/22 09:34 V13533ENM <0.0336 µg/m3 0.0336 1.80Methyl tert-butyl ether (MTBE)1 01/06/22 09:34 V13533ENM 2.10 µg/m3 0.121 2.054-Methyl-2-Pentanone 1 01/06/22 09:34 V13533ENM 1.04 J µg/m3 0.489 1.74Methylene Chloride 1 01/06/22 09:34 V13533ENM 4.48 µg/m3 0.183 2.62Naphthalene 1 01/06/22 09:34 V13533ENM Qualifiers/ Definitions Estimated valueJDilution FactorDF Method Quantitation LimitMQL Page 13 of 40 , REPORT OF ANALYSISReport Number : Project Information : NC 28203 21-363-0016 01102 Hart & Hickman (Charlotte) 2923 South Tryon St. Ste 100 Alexis McKenzie Charlotte Received : 12/29/2021 RMR-002 Report Date : 01/07/2022 Sample ID : Lab No : Sampled:MP-DUP 91257 Matrix: 12/29/2021 9:07 Air Analytical Method: Prep Method: Test Results Units MDL MQL By Analytical Batch Date / Time Analyzed DF TO-15 Prep TO-15 Prep Batch(es):V13532 01/06/22 08:00 <0.242 µg/m3 0.242 0.861Propene 1 01/06/22 09:34 V13533ENM 0.562 J µg/m3 0.124 2.13Styrene 1 01/06/22 09:34 V13533ENM <0.104 µg/m3 0.104 3.431,1,2,2-Tetrachloroethane 1 01/06/22 09:34 V13533ENM <0.181 µg/m3 0.181 3.39Tetrachloroethene 1 01/06/22 09:34 V13533ENM 1.04 J µg/m3 0.107 1.47Tetrahydrofuran 1 01/06/22 09:34 V13533ENM 2.15 µg/m3 0.0901 1.88Toluene 1 01/06/22 09:34 V13533ENM <0.209 µg/m3 0.209 3.711,2,4-Trichlorobenzene 1 01/06/22 09:34 V13533ENM <0.144 µg/m3 0.144 2.731,1,1-Trichloroethane 1 01/06/22 09:34 V13533ENM <0.0877 µg/m3 0.0877 2.73 1,1,2-Trichloroethane 1 01/06/22 09:34 V13533ENM <0.199 µg/m3 0.199 2.15Trichloroethene 1 01/06/22 09:34 V13533ENM 2.14 J µg/m3 0.130 2.81Trichlorofluoromethane 1 01/06/22 09:34 V13533ENM 1.42 J µg/m3 0.110 2.461,2,4-Trimethylbenzene 1 01/06/22 09:34 V13533ENM <0.236 µg/m3 0.236 2.461,3,5-Trimethylbenzene 1 01/06/22 09:34 V13533ENM <0.224 µg/m3 0.224 1.76Vinyl Acetate 1 01/06/22 09:34 V13533ENM <0.127 µg/m3 0.127 1.28Vinyl Chloride 1 01/06/22 09:34 V13533ENM 0.925 J µg/m3 0.157 2.17 o-Xylene 1 01/06/22 09:34 V13533ENM 2.25 J µg/m3 0.217 5.65m,p-Xylene 1 01/06/22 09:34 V13533ENM 3.18 J µg/m3 0.157 2.17Xylene (Total)1 01/06/22 09:34 V13533 Surrogate: 4-Bromofluorobenzene 94.1 Limits: 70-130%01/06/22 09:341 ENM V13533 Qualifiers/ Definitions Estimated valueJDilution FactorDF Method Quantitation LimitMQL Page 14 of 40 , REPORT OF ANALYSISReport Number : Project Information : NC 28203 21-363-0016 01102 Hart & Hickman (Charlotte) 2923 South Tryon St. Ste 100 Alexis McKenzie Charlotte Received : 12/29/2021 RMR-002 Report Date : 01/07/2022 Sample ID : Lab No : Sampled:MP-15 91258 Matrix: 12/29/2021 10:58 Air Analytical Method: Prep Method: Test Results Units MDL MQL By Analytical Batch Date / Time Analyzed DF TO-15 Prep TO-15 Prep Batch(es):V13532 01/06/22 08:00 24.2 µg/m3 0.202 4.75Acetone 1 01/06/22 10:25 V13533ENM 0.364 J µg/m3 0.0733 1.60Benzene 1 01/06/22 10:25 V13533ENM <0.148 µg/m3 0.148 10.4Benzyl Chloride 1 01/06/22 10:25 V13533ENM <0.150 µg/m3 0.150 3.35Bromodichloromethane 1 01/06/22 10:25 V13533ENM <0.153 µg/m3 0.153 5.17Bromoform 1 01/06/22 10:25 V13533ENM <0.115 µg/m3 0.115 1.94Bromomethane 1 01/06/22 10:25 V13533ENM <0.328 µg/m3 0.328 1.111,3-Butadiene 1 01/06/22 10:25 V13533ENM 1.31 J µg/m3 0.0608 6.23Carbon Disulfide 1 01/06/22 10:25 V13533ENM 0.698 J µg/m3 0.155 3.15 Carbon Tetrachloride 1 01/06/22 10:25 V13533ENM <0.107 µg/m3 0.107 2.30Chlorobenzene 1 01/06/22 10:25 V13533ENM <0.208 µg/m3 0.208 4.26Chlorodibromomethane 1 01/06/22 10:25 V13533ENM <0.164 µg/m3 0.164 1.32Chloroethane 1 01/06/22 10:25 V13533ENM <0.0864 µg/m3 0.0864 2.44Chloroform 1 01/06/22 10:25 V13533ENM <0.0673 µg/m3 0.0673 1.03Chloromethane 1 01/06/22 10:25 V13533ENM 6.19 µg/m3 0.161 3.44Cyclohexane 1 01/06/22 10:25 V13533ENM <0.151 µg/m3 0.151 3.84 1,2-Dibromoethane 1 01/06/22 10:25 V13533ENM <0.0963 µg/m3 0.0963 3.011,2-Dichlorobenzene 1 01/06/22 10:25 V13533ENM <0.174 µg/m3 0.174 12.01,3-Dichlorobenzene 1 01/06/22 10:25 V13533ENM <0.186 µg/m3 0.186 3.011,4-Dichlorobenzene 1 01/06/22 10:25 V13533ENM 3.29 µg/m3 0.134 2.47Dichlorodifluoromethane 1 01/06/22 10:25 V13533ENM <0.101 µg/m3 0.101 2.021,1-Dichloroethane 1 01/06/22 10:25 V13533ENM <0.129 µg/m3 0.129 2.021,2-Dichloroethane 1 01/06/22 10:25 V13533ENM Qualifiers/ Definitions Estimated valueJDilution FactorDF Method Quantitation LimitMQL Page 15 of 40 , REPORT OF ANALYSISReport Number : Project Information : NC 28203 21-363-0016 01102 Hart & Hickman (Charlotte) 2923 South Tryon St. Ste 100 Alexis McKenzie Charlotte Received : 12/29/2021 RMR-002 Report Date : 01/07/2022 Sample ID : Lab No : Sampled:MP-15 91258 Matrix: 12/29/2021 10:58 Air Analytical Method: Prep Method: Test Results Units MDL MQL By Analytical Batch Date / Time Analyzed DF TO-15 Prep TO-15 Prep Batch(es):V13532 01/06/22 08:00 <0.107 µg/m3 0.107 1.981,1-Dichloroethene 1 01/06/22 10:25 V13533ENM <0.0955 µg/m3 0.0955 1.98cis-1,2-Dichloroethene 1 01/06/22 10:25 V13533ENM <0.108 µg/m3 0.108 1.98trans-1,2-Dichloroethene 1 01/06/22 10:25 V13533ENM <0.205 µg/m3 0.205 2.311,2-Dichloropropane 1 01/06/22 10:25 V13533ENM <0.623 µg/m3 0.623 3.501,2-Dichlorotetrafluoroethane 1 01/06/22 10:25 V13533ENM <0.178 µg/m3 0.178 2.27cis-1,3-Dichloropropene 1 01/06/22 10:25 V13533ENM <0.178 µg/m3 0.178 2.27trans-1,3-Dichloropropene 1 01/06/22 10:25 V13533ENM <0.435 µg/m3 0.435 1.801,4-Dioxane 1 01/06/22 10:25 V13533ENM <0.136 µg/m3 0.136 1.80 Ethyl Acetate 1 01/06/22 10:25 V13533ENM 0.782 J µg/m3 0.106 2.17Ethylbenzene 1 01/06/22 10:25 V13533ENM 1.25 J µg/m3 0.128 2.464-Ethyltoluene 1 01/06/22 10:25 V13533ENM 0.766 J µg/m3 0.561 3.831,1,2-Trichloro-1,2,2-trifluoroethane 1 01/06/22 10:25 V13533ENM <0.143 µg/m3 0.143 2.05Heptane 1 01/06/22 10:25 V13533ENM <0.330 µg/m3 0.330 5.33Hexachlorobutadiene 1 01/06/22 10:25 V13533ENM 0.916 J µg/m3 0.0472 1.76n-Hexane 1 01/06/22 10:25 V13533ENM 3.98 µg/m3 0.285 2.05 2-Hexanone 1 01/06/22 10:25 V13533ENM 15.9 µg/m3 0.139 4.92Isopropyl Alchohol 1 01/06/22 10:25 V13533ENM 2.63 µg/m3 0.224 1.47Methyl Ethyl Ketone (MEK)1 01/06/22 10:25 V13533ENM <0.0336 µg/m3 0.0336 1.80Methyl tert-butyl ether (MTBE)1 01/06/22 10:25 V13533ENM 2.02 J µg/m3 0.121 2.054-Methyl-2-Pentanone 1 01/06/22 10:25 V13533ENM 1.52 J µg/m3 0.489 1.74Methylene Chloride 1 01/06/22 10:25 V13533ENM 4.60 µg/m3 0.183 2.62Naphthalene 1 01/06/22 10:25 V13533ENM Qualifiers/ Definitions Estimated valueJDilution FactorDF Method Quantitation LimitMQL Page 16 of 40 , REPORT OF ANALYSISReport Number : Project Information : NC 28203 21-363-0016 01102 Hart & Hickman (Charlotte) 2923 South Tryon St. Ste 100 Alexis McKenzie Charlotte Received : 12/29/2021 RMR-002 Report Date : 01/07/2022 Sample ID : Lab No : Sampled:MP-15 91258 Matrix: 12/29/2021 10:58 Air Analytical Method: Prep Method: Test Results Units MDL MQL By Analytical Batch Date / Time Analyzed DF TO-15 Prep TO-15 Prep Batch(es):V13532 01/06/22 08:00 <0.242 µg/m3 0.242 0.861Propene 1 01/06/22 10:25 V13533ENM 0.886 J µg/m3 0.124 2.13Styrene 1 01/06/22 10:25 V13533ENM <0.104 µg/m3 0.104 3.431,1,2,2-Tetrachloroethane 1 01/06/22 10:25 V13533ENM 0.570 J µg/m3 0.181 3.39Tetrachloroethene 1 01/06/22 10:25 V13533ENM 2.84 µg/m3 0.107 1.47Tetrahydrofuran 1 01/06/22 10:25 V13533ENM 2.40 µg/m3 0.0901 1.88Toluene 1 01/06/22 10:25 V13533ENM <0.209 µg/m3 0.209 3.711,2,4-Trichlorobenzene 1 01/06/22 10:25 V13533ENM <0.144 µg/m3 0.144 2.731,1,1-Trichloroethane 1 01/06/22 10:25 V13533ENM <0.0877 µg/m3 0.0877 2.73 1,1,2-Trichloroethane 1 01/06/22 10:25 V13533ENM <0.199 µg/m3 0.199 2.15Trichloroethene 1 01/06/22 10:25 V13533ENM 1.76 J µg/m3 0.130 2.81Trichlorofluoromethane 1 01/06/22 10:25 V13533ENM 6.58 µg/m3 0.110 2.461,2,4-Trimethylbenzene 1 01/06/22 10:25 V13533ENM 2.42 J µg/m3 0.236 2.461,3,5-Trimethylbenzene 1 01/06/22 10:25 V13533ENM <0.224 µg/m3 0.224 1.76Vinyl Acetate 1 01/06/22 10:25 V13533ENM <0.127 µg/m3 0.127 1.28Vinyl Chloride 1 01/06/22 10:25 V13533ENM 1.74 J µg/m3 0.157 2.17 o-Xylene 1 01/06/22 10:25 V13533ENM 3.23 J µg/m3 0.217 5.65m,p-Xylene 1 01/06/22 10:25 V13533ENM 4.97 J µg/m3 0.157 2.17Xylene (Total)1 01/06/22 10:25 V13533 Surrogate: 4-Bromofluorobenzene 97.8 Limits: 70-130%01/06/22 10:251 ENM V13533 Qualifiers/ Definitions Estimated valueJDilution FactorDF Method Quantitation LimitMQL Page 17 of 40 , REPORT OF ANALYSISReport Number : Project Information : NC 28203 21-363-0016 01102 Hart & Hickman (Charlotte) 2923 South Tryon St. Ste 100 Alexis McKenzie Charlotte Received : 12/29/2021 RMR-002 Report Date : 01/07/2022 Sample ID : Lab No : Sampled:MP-7 91259 Matrix: 12/29/2021 9:47 Air Analytical Method: Prep Method: Test Results Units MDL MQL By Analytical Batch Date / Time Analyzed DF TO-15 Prep TO-15 Prep Batch(es):V13532 01/06/22 08:00 11.3 µg/m3 0.202 4.75Acetone 1 01/06/22 11:20 V13533ENM 0.387 J µg/m3 0.0733 1.60Benzene 1 01/06/22 11:20 V13533ENM <0.148 µg/m3 0.148 10.4Benzyl Chloride 1 01/06/22 11:20 V13533ENM <0.150 µg/m3 0.150 3.35Bromodichloromethane 1 01/06/22 11:20 V13533ENM <0.153 µg/m3 0.153 5.17Bromoform 1 01/06/22 11:20 V13533ENM <0.115 µg/m3 0.115 1.94Bromomethane 1 01/06/22 11:20 V13533ENM <0.328 µg/m3 0.328 1.111,3-Butadiene 1 01/06/22 11:20 V13533ENM 1.22 J µg/m3 0.0608 6.23Carbon Disulfide 1 01/06/22 11:20 V13533ENM <0.155 µg/m3 0.155 3.15 Carbon Tetrachloride 1 01/06/22 11:20 V13533ENM <0.107 µg/m3 0.107 2.30Chlorobenzene 1 01/06/22 11:20 V13533ENM <0.208 µg/m3 0.208 4.26Chlorodibromomethane 1 01/06/22 11:20 V13533ENM <0.164 µg/m3 0.164 1.32Chloroethane 1 01/06/22 11:20 V13533ENM 0.718 J µg/m3 0.0864 2.44Chloroform 1 01/06/22 11:20 V13533ENM <0.0673 µg/m3 0.0673 1.03Chloromethane 1 01/06/22 11:20 V13533ENM 3.80 µg/m3 0.161 3.44Cyclohexane 1 01/06/22 11:20 V13533ENM <0.151 µg/m3 0.151 3.84 1,2-Dibromoethane 1 01/06/22 11:20 V13533ENM <0.0963 µg/m3 0.0963 3.011,2-Dichlorobenzene 1 01/06/22 11:20 V13533ENM <0.174 µg/m3 0.174 12.01,3-Dichlorobenzene 1 01/06/22 11:20 V13533ENM <0.186 µg/m3 0.186 3.011,4-Dichlorobenzene 1 01/06/22 11:20 V13533ENM 3.56 µg/m3 0.134 2.47Dichlorodifluoromethane 1 01/06/22 11:20 V13533ENM <0.101 µg/m3 0.101 2.021,1-Dichloroethane 1 01/06/22 11:20 V13533ENM <0.129 µg/m3 0.129 2.021,2-Dichloroethane 1 01/06/22 11:20 V13533ENM Qualifiers/ Definitions Estimated valueJDilution FactorDF Method Quantitation LimitMQL Page 18 of 40 , REPORT OF ANALYSISReport Number : Project Information : NC 28203 21-363-0016 01102 Hart & Hickman (Charlotte) 2923 South Tryon St. Ste 100 Alexis McKenzie Charlotte Received : 12/29/2021 RMR-002 Report Date : 01/07/2022 Sample ID : Lab No : Sampled:MP-7 91259 Matrix: 12/29/2021 9:47 Air Analytical Method: Prep Method: Test Results Units MDL MQL By Analytical Batch Date / Time Analyzed DF TO-15 Prep TO-15 Prep Batch(es):V13532 01/06/22 08:00 <0.107 µg/m3 0.107 1.981,1-Dichloroethene 1 01/06/22 11:20 V13533ENM <0.0955 µg/m3 0.0955 1.98cis-1,2-Dichloroethene 1 01/06/22 11:20 V13533ENM <0.108 µg/m3 0.108 1.98trans-1,2-Dichloroethene 1 01/06/22 11:20 V13533ENM <0.205 µg/m3 0.205 2.311,2-Dichloropropane 1 01/06/22 11:20 V13533ENM <0.623 µg/m3 0.623 3.501,2-Dichlorotetrafluoroethane 1 01/06/22 11:20 V13533ENM <0.178 µg/m3 0.178 2.27cis-1,3-Dichloropropene 1 01/06/22 11:20 V13533ENM <0.178 µg/m3 0.178 2.27trans-1,3-Dichloropropene 1 01/06/22 11:20 V13533ENM <0.435 µg/m3 0.435 1.801,4-Dioxane 1 01/06/22 11:20 V13533ENM <0.136 µg/m3 0.136 1.80 Ethyl Acetate 1 01/06/22 11:20 V13533ENM 0.677 J µg/m3 0.106 2.17Ethylbenzene 1 01/06/22 11:20 V13533ENM <0.128 µg/m3 0.128 2.464-Ethyltoluene 1 01/06/22 11:20 V13533ENM 0.782 J µg/m3 0.561 3.831,1,2-Trichloro-1,2,2-trifluoroethane 1 01/06/22 11:20 V13533ENM <0.143 µg/m3 0.143 2.05Heptane 1 01/06/22 11:20 V13533ENM <0.330 µg/m3 0.330 5.33Hexachlorobutadiene 1 01/06/22 11:20 V13533ENM 0.317 J µg/m3 0.0472 1.76n-Hexane 1 01/06/22 11:20 V13533ENM <0.285 µg/m3 0.285 2.05 2-Hexanone 1 01/06/22 11:20 V13533ENM 6.93 µg/m3 0.139 4.92Isopropyl Alchohol 1 01/06/22 11:20 V13533ENM 7.66 µg/m3 0.224 1.47Methyl Ethyl Ketone (MEK)1 01/06/22 11:20 V13533ENM <0.0336 µg/m3 0.0336 1.80Methyl tert-butyl ether (MTBE)1 01/06/22 11:20 V13533ENM <0.121 µg/m3 0.121 2.054-Methyl-2-Pentanone 1 01/06/22 11:20 V13533ENM 1.84 µg/m3 0.489 1.74Methylene Chloride 1 01/06/22 11:20 V13533ENM 4.05 µg/m3 0.183 2.62Naphthalene 1 01/06/22 11:20 V13533ENM Qualifiers/ Definitions Estimated valueJDilution FactorDF Method Quantitation LimitMQL Page 19 of 40 , REPORT OF ANALYSISReport Number : Project Information : NC 28203 21-363-0016 01102 Hart & Hickman (Charlotte) 2923 South Tryon St. Ste 100 Alexis McKenzie Charlotte Received : 12/29/2021 RMR-002 Report Date : 01/07/2022 Sample ID : Lab No : Sampled:MP-7 91259 Matrix: 12/29/2021 9:47 Air Analytical Method: Prep Method: Test Results Units MDL MQL By Analytical Batch Date / Time Analyzed DF TO-15 Prep TO-15 Prep Batch(es):V13532 01/06/22 08:00 <0.242 µg/m3 0.242 0.861Propene 1 01/06/22 11:20 V13533ENM <0.124 µg/m3 0.124 2.13Styrene 1 01/06/22 11:20 V13533ENM <0.104 µg/m3 0.104 3.431,1,2,2-Tetrachloroethane 1 01/06/22 11:20 V13533ENM 1.78 J µg/m3 0.181 3.39Tetrachloroethene 1 01/06/22 11:20 V13533ENM 125 µg/m3 0.107 1.47Tetrahydrofuran 1 01/06/22 11:20 V13533ENM 2.74 µg/m3 0.0901 1.88Toluene 1 01/06/22 11:20 V13533ENM <0.209 µg/m3 0.209 3.711,2,4-Trichlorobenzene 1 01/06/22 11:20 V13533ENM <0.144 µg/m3 0.144 2.731,1,1-Trichloroethane 1 01/06/22 11:20 V13533ENM <0.0877 µg/m3 0.0877 2.73 1,1,2-Trichloroethane 1 01/06/22 11:20 V13533ENM <0.199 µg/m3 0.199 2.15Trichloroethene 1 01/06/22 11:20 V13533ENM 2.04 J µg/m3 0.130 2.81Trichlorofluoromethane 1 01/06/22 11:20 V13533ENM 1.27 J µg/m3 0.110 2.461,2,4-Trimethylbenzene 1 01/06/22 11:20 V13533ENM <0.236 µg/m3 0.236 2.461,3,5-Trimethylbenzene 1 01/06/22 11:20 V13533ENM <0.224 µg/m3 0.224 1.76Vinyl Acetate 1 01/06/22 11:20 V13533ENM <0.127 µg/m3 0.127 1.28Vinyl Chloride 1 01/06/22 11:20 V13533ENM 1.05 J µg/m3 0.157 2.17 o-Xylene 1 01/06/22 11:20 V13533ENM 2.54 J µg/m3 0.217 5.65m,p-Xylene 1 01/06/22 11:20 V13533ENM 3.59 J µg/m3 0.157 2.17Xylene (Total)1 01/06/22 11:20 V13533 Surrogate: 4-Bromofluorobenzene 93.3 Limits: 70-130%01/06/22 11:201 ENM V13533 Qualifiers/ Definitions Estimated valueJDilution FactorDF Method Quantitation LimitMQL Page 20 of 40 , REPORT OF ANALYSISReport Number : Project Information : NC 28203 21-363-0016 01102 Hart & Hickman (Charlotte) 2923 South Tryon St. Ste 100 Alexis McKenzie Charlotte Received : 12/29/2021 RMR-002 Report Date : 01/07/2022 Sample ID : Lab No : Sampled:MP-4 91260 Matrix: 12/29/2021 12:16 Air Analytical Method: Prep Method: Test Results Units MDL MQL By Analytical Batch Date / Time Analyzed DF TO-15 Prep TO-15 Prep Batch(es):V13532 01/06/22 08:00 12.6 µg/m3 0.202 4.75Acetone 1 01/06/22 12:13 V13533ENM 0.323 J µg/m3 0.0733 1.60Benzene 1 01/06/22 12:13 V13533ENM <0.148 µg/m3 0.148 10.4Benzyl Chloride 1 01/06/22 12:13 V13533ENM <0.150 µg/m3 0.150 3.35Bromodichloromethane 1 01/06/22 12:13 V13533ENM <0.153 µg/m3 0.153 5.17Bromoform 1 01/06/22 12:13 V13533ENM <0.115 µg/m3 0.115 1.94Bromomethane 1 01/06/22 12:13 V13533ENM <0.328 µg/m3 0.328 1.111,3-Butadiene 1 01/06/22 12:13 V13533ENM 0.710 J µg/m3 0.0608 6.23Carbon Disulfide 1 01/06/22 12:13 V13533ENM <0.155 µg/m3 0.155 3.15 Carbon Tetrachloride 1 01/06/22 12:13 V13533ENM <0.107 µg/m3 0.107 2.30Chlorobenzene 1 01/06/22 12:13 V13533ENM <0.208 µg/m3 0.208 4.26Chlorodibromomethane 1 01/06/22 12:13 V13533ENM <0.164 µg/m3 0.164 1.32Chloroethane 1 01/06/22 12:13 V13533ENM <0.0864 µg/m3 0.0864 2.44Chloroform 1 01/06/22 12:13 V13533ENM <0.0673 µg/m3 0.0673 1.03Chloromethane 1 01/06/22 12:13 V13533ENM 5.83 µg/m3 0.161 3.44Cyclohexane 1 01/06/22 12:13 V13533ENM <0.151 µg/m3 0.151 3.84 1,2-Dibromoethane 1 01/06/22 12:13 V13533ENM <0.0963 µg/m3 0.0963 3.011,2-Dichlorobenzene 1 01/06/22 12:13 V13533ENM <0.174 µg/m3 0.174 12.01,3-Dichlorobenzene 1 01/06/22 12:13 V13533ENM <0.186 µg/m3 0.186 3.011,4-Dichlorobenzene 1 01/06/22 12:13 V13533ENM 3.53 µg/m3 0.134 2.47Dichlorodifluoromethane 1 01/06/22 12:13 V13533ENM <0.101 µg/m3 0.101 2.021,1-Dichloroethane 1 01/06/22 12:13 V13533ENM <0.129 µg/m3 0.129 2.021,2-Dichloroethane 1 01/06/22 12:13 V13533ENM Qualifiers/ Definitions Estimated valueJDilution FactorDF Method Quantitation LimitMQL Page 21 of 40 , REPORT OF ANALYSISReport Number : Project Information : NC 28203 21-363-0016 01102 Hart & Hickman (Charlotte) 2923 South Tryon St. Ste 100 Alexis McKenzie Charlotte Received : 12/29/2021 RMR-002 Report Date : 01/07/2022 Sample ID : Lab No : Sampled:MP-4 91260 Matrix: 12/29/2021 12:16 Air Analytical Method: Prep Method: Test Results Units MDL MQL By Analytical Batch Date / Time Analyzed DF TO-15 Prep TO-15 Prep Batch(es):V13532 01/06/22 08:00 <0.107 µg/m3 0.107 1.981,1-Dichloroethene 1 01/06/22 12:13 V13533ENM <0.0955 µg/m3 0.0955 1.98cis-1,2-Dichloroethene 1 01/06/22 12:13 V13533ENM <0.108 µg/m3 0.108 1.98trans-1,2-Dichloroethene 1 01/06/22 12:13 V13533ENM <0.205 µg/m3 0.205 2.311,2-Dichloropropane 1 01/06/22 12:13 V13533ENM <0.623 µg/m3 0.623 3.501,2-Dichlorotetrafluoroethane 1 01/06/22 12:13 V13533ENM <0.178 µg/m3 0.178 2.27cis-1,3-Dichloropropene 1 01/06/22 12:13 V13533ENM <0.178 µg/m3 0.178 2.27trans-1,3-Dichloropropene 1 01/06/22 12:13 V13533ENM <0.435 µg/m3 0.435 1.801,4-Dioxane 1 01/06/22 12:13 V13533ENM <0.136 µg/m3 0.136 1.80 Ethyl Acetate 1 01/06/22 12:13 V13533ENM 0.356 J µg/m3 0.106 2.17Ethylbenzene 1 01/06/22 12:13 V13533ENM <0.128 µg/m3 0.128 2.464-Ethyltoluene 1 01/06/22 12:13 V13533ENM 0.697 J µg/m3 0.561 3.831,1,2-Trichloro-1,2,2-trifluoroethane 1 01/06/22 12:13 V13533ENM <0.143 µg/m3 0.143 2.05Heptane 1 01/06/22 12:13 V13533ENM <0.330 µg/m3 0.330 5.33Hexachlorobutadiene 1 01/06/22 12:13 V13533ENM 0.395 J µg/m3 0.0472 1.76n-Hexane 1 01/06/22 12:13 V13533ENM <0.285 µg/m3 0.285 2.05 2-Hexanone 1 01/06/22 12:13 V13533ENM 3.43 J µg/m3 0.139 4.92Isopropyl Alchohol 1 01/06/22 12:13 V13533ENM 8.50 µg/m3 0.224 1.47Methyl Ethyl Ketone (MEK)1 01/06/22 12:13 V13533ENM <0.0336 µg/m3 0.0336 1.80Methyl tert-butyl ether (MTBE)1 01/06/22 12:13 V13533ENM <0.121 µg/m3 0.121 2.054-Methyl-2-Pentanone 1 01/06/22 12:13 V13533ENM 0.702 J µg/m3 0.489 1.74Methylene Chloride 1 01/06/22 12:13 V13533ENM 4.13 µg/m3 0.183 2.62Naphthalene 1 01/06/22 12:13 V13533ENM Qualifiers/ Definitions Estimated valueJDilution FactorDF Method Quantitation LimitMQL Page 22 of 40 , REPORT OF ANALYSISReport Number : Project Information : NC 28203 21-363-0016 01102 Hart & Hickman (Charlotte) 2923 South Tryon St. Ste 100 Alexis McKenzie Charlotte Received : 12/29/2021 RMR-002 Report Date : 01/07/2022 Sample ID : Lab No : Sampled:MP-4 91260 Matrix: 12/29/2021 12:16 Air Analytical Method: Prep Method: Test Results Units MDL MQL By Analytical Batch Date / Time Analyzed DF TO-15 Prep TO-15 Prep Batch(es):V13532 01/06/22 08:00 <0.242 µg/m3 0.242 0.861Propene 1 01/06/22 12:13 V13533ENM <0.124 µg/m3 0.124 2.13Styrene 1 01/06/22 12:13 V13533ENM <0.104 µg/m3 0.104 3.431,1,2,2-Tetrachloroethane 1 01/06/22 12:13 V13533ENM <0.181 µg/m3 0.181 3.39Tetrachloroethene 1 01/06/22 12:13 V13533ENM 52.2 µg/m3 0.107 1.47Tetrahydrofuran 1 01/06/22 12:13 V13533ENM 1.53 J µg/m3 0.0901 1.88Toluene 1 01/06/22 12:13 V13533ENM <0.209 µg/m3 0.209 3.711,2,4-Trichlorobenzene 1 01/06/22 12:13 V13533ENM <0.144 µg/m3 0.144 2.731,1,1-Trichloroethane 1 01/06/22 12:13 V13533ENM <0.0877 µg/m3 0.0877 2.73 1,1,2-Trichloroethane 1 01/06/22 12:13 V13533ENM 0.613 J µg/m3 0.199 2.15Trichloroethene 1 01/06/22 12:13 V13533ENM 2.97 µg/m3 0.130 2.81Trichlorofluoromethane 1 01/06/22 12:13 V13533ENM 0.816 J µg/m3 0.110 2.461,2,4-Trimethylbenzene 1 01/06/22 12:13 V13533ENM <0.236 µg/m3 0.236 2.461,3,5-Trimethylbenzene 1 01/06/22 12:13 V13533ENM <0.224 µg/m3 0.224 1.76Vinyl Acetate 1 01/06/22 12:13 V13533ENM <0.127 µg/m3 0.127 1.28Vinyl Chloride 1 01/06/22 12:13 V13533ENM 0.564 J µg/m3 0.157 2.17 o-Xylene 1 01/06/22 12:13 V13533ENM 1.35 J µg/m3 0.217 5.65m,p-Xylene 1 01/06/22 12:13 V13533ENM 1.91 J µg/m3 0.157 2.17Xylene (Total)1 01/06/22 12:13 V13533 Surrogate: 4-Bromofluorobenzene 96.9 Limits: 70-130%01/06/22 12:131 ENM V13533 Qualifiers/ Definitions Estimated valueJDilution FactorDF Method Quantitation LimitMQL Page 23 of 40 , REPORT OF ANALYSISReport Number : Project Information : NC 28203 21-363-0016 01102 Hart & Hickman (Charlotte) 2923 South Tryon St. Ste 100 Alexis McKenzie Charlotte Received : 12/29/2021 RMR-002 Report Date : 01/07/2022 Sample ID : Lab No : Sampled:MP-18 91261 Matrix: 12/29/2021 11:27 Air Analytical Method: Prep Method: Test Results Units MDL MQL By Analytical Batch Date / Time Analyzed DF TO-15 Prep TO-15 Prep Batch(es):V13532 01/06/22 08:00 11.0 µg/m3 0.202 4.75Acetone 1 01/06/22 13:05 V13533ENM 0.313 J µg/m3 0.0733 1.60Benzene 1 01/06/22 13:05 V13533ENM <0.148 µg/m3 0.148 10.4Benzyl Chloride 1 01/06/22 13:05 V13533ENM <0.150 µg/m3 0.150 3.35Bromodichloromethane 1 01/06/22 13:05 V13533ENM <0.153 µg/m3 0.153 5.17Bromoform 1 01/06/22 13:05 V13533ENM <0.115 µg/m3 0.115 1.94Bromomethane 1 01/06/22 13:05 V13533ENM <0.328 µg/m3 0.328 1.111,3-Butadiene 1 01/06/22 13:05 V13533ENM 0.610 J µg/m3 0.0608 6.23Carbon Disulfide 1 01/06/22 13:05 V13533ENM 0.717 J µg/m3 0.155 3.15 Carbon Tetrachloride 1 01/06/22 13:05 V13533ENM <0.107 µg/m3 0.107 2.30Chlorobenzene 1 01/06/22 13:05 V13533ENM <0.208 µg/m3 0.208 4.26Chlorodibromomethane 1 01/06/22 13:05 V13533ENM <0.164 µg/m3 0.164 1.32Chloroethane 1 01/06/22 13:05 V13533ENM 0.757 J µg/m3 0.0864 2.44Chloroform 1 01/06/22 13:05 V13533ENM <0.0673 µg/m3 0.0673 1.03Chloromethane 1 01/06/22 13:05 V13533ENM 9.54 µg/m3 0.161 3.44Cyclohexane 1 01/06/22 13:05 V13533ENM <0.151 µg/m3 0.151 3.84 1,2-Dibromoethane 1 01/06/22 13:05 V13533ENM <0.0963 µg/m3 0.0963 3.011,2-Dichlorobenzene 1 01/06/22 13:05 V13533ENM <0.174 µg/m3 0.174 12.01,3-Dichlorobenzene 1 01/06/22 13:05 V13533ENM <0.186 µg/m3 0.186 3.011,4-Dichlorobenzene 1 01/06/22 13:05 V13533ENM 3.47 µg/m3 0.134 2.47Dichlorodifluoromethane 1 01/06/22 13:05 V13533ENM <0.101 µg/m3 0.101 2.021,1-Dichloroethane 1 01/06/22 13:05 V13533ENM <0.129 µg/m3 0.129 2.021,2-Dichloroethane 1 01/06/22 13:05 V13533ENM Qualifiers/ Definitions Estimated valueJDilution FactorDF Method Quantitation LimitMQL Page 24 of 40 , REPORT OF ANALYSISReport Number : Project Information : NC 28203 21-363-0016 01102 Hart & Hickman (Charlotte) 2923 South Tryon St. Ste 100 Alexis McKenzie Charlotte Received : 12/29/2021 RMR-002 Report Date : 01/07/2022 Sample ID : Lab No : Sampled:MP-18 91261 Matrix: 12/29/2021 11:27 Air Analytical Method: Prep Method: Test Results Units MDL MQL By Analytical Batch Date / Time Analyzed DF TO-15 Prep TO-15 Prep Batch(es):V13532 01/06/22 08:00 <0.107 µg/m3 0.107 1.981,1-Dichloroethene 1 01/06/22 13:05 V13533ENM <0.0955 µg/m3 0.0955 1.98cis-1,2-Dichloroethene 1 01/06/22 13:05 V13533ENM <0.108 µg/m3 0.108 1.98trans-1,2-Dichloroethene 1 01/06/22 13:05 V13533ENM <0.205 µg/m3 0.205 2.311,2-Dichloropropane 1 01/06/22 13:05 V13533ENM <0.623 µg/m3 0.623 3.501,2-Dichlorotetrafluoroethane 1 01/06/22 13:05 V13533ENM <0.178 µg/m3 0.178 2.27cis-1,3-Dichloropropene 1 01/06/22 13:05 V13533ENM <0.178 µg/m3 0.178 2.27trans-1,3-Dichloropropene 1 01/06/22 13:05 V13533ENM <0.435 µg/m3 0.435 1.801,4-Dioxane 1 01/06/22 13:05 V13533ENM <0.136 µg/m3 0.136 1.80 Ethyl Acetate 1 01/06/22 13:05 V13533ENM 4.23 µg/m3 0.106 2.17Ethylbenzene 1 01/06/22 13:05 V13533ENM <0.128 µg/m3 0.128 2.464-Ethyltoluene 1 01/06/22 13:05 V13533ENM 0.720 J µg/m3 0.561 3.831,1,2-Trichloro-1,2,2-trifluoroethane 1 01/06/22 13:05 V13533ENM <0.143 µg/m3 0.143 2.05Heptane 1 01/06/22 13:05 V13533ENM <0.330 µg/m3 0.330 5.33Hexachlorobutadiene 1 01/06/22 13:05 V13533ENM 0.412 J µg/m3 0.0472 1.76n-Hexane 1 01/06/22 13:05 V13533ENM <0.285 µg/m3 0.285 2.05 2-Hexanone 1 01/06/22 13:05 V13533ENM 2.64 J µg/m3 0.139 4.92Isopropyl Alchohol 1 01/06/22 13:05 V13533ENM 2.96 µg/m3 0.224 1.47Methyl Ethyl Ketone (MEK)1 01/06/22 13:05 V13533ENM <0.0336 µg/m3 0.0336 1.80Methyl tert-butyl ether (MTBE)1 01/06/22 13:05 V13533ENM <0.121 µg/m3 0.121 2.054-Methyl-2-Pentanone 1 01/06/22 13:05 V13533ENM 0.854 J µg/m3 0.489 1.74Methylene Chloride 1 01/06/22 13:05 V13533ENM 4.89 µg/m3 0.183 2.62Naphthalene 1 01/06/22 13:05 V13533ENM Qualifiers/ Definitions Estimated valueJDilution FactorDF Method Quantitation LimitMQL Page 25 of 40 , REPORT OF ANALYSISReport Number : Project Information : NC 28203 21-363-0016 01102 Hart & Hickman (Charlotte) 2923 South Tryon St. Ste 100 Alexis McKenzie Charlotte Received : 12/29/2021 RMR-002 Report Date : 01/07/2022 Sample ID : Lab No : Sampled:MP-18 91261 Matrix: 12/29/2021 11:27 Air Analytical Method: Prep Method: Test Results Units MDL MQL By Analytical Batch Date / Time Analyzed DF TO-15 Prep TO-15 Prep Batch(es):V13532 01/06/22 08:00 <0.242 µg/m3 0.242 0.861Propene 1 01/06/22 13:05 V13533ENM <0.124 µg/m3 0.124 2.13Styrene 1 01/06/22 13:05 V13533ENM <0.104 µg/m3 0.104 3.431,1,2,2-Tetrachloroethane 1 01/06/22 13:05 V13533ENM <0.181 µg/m3 0.181 3.39Tetrachloroethene 1 01/06/22 13:05 V13533ENM 9.65 µg/m3 0.107 1.47Tetrahydrofuran 1 01/06/22 13:05 V13533ENM 2.49 µg/m3 0.0901 1.88Toluene 1 01/06/22 13:05 V13533ENM <0.209 µg/m3 0.209 3.711,2,4-Trichlorobenzene 1 01/06/22 13:05 V13533ENM <0.144 µg/m3 0.144 2.731,1,1-Trichloroethane 1 01/06/22 13:05 V13533ENM <0.0877 µg/m3 0.0877 2.73 1,1,2-Trichloroethane 1 01/06/22 13:05 V13533ENM <0.199 µg/m3 0.199 2.15Trichloroethene 1 01/06/22 13:05 V13533ENM 2.04 J µg/m3 0.130 2.81Trichlorofluoromethane 1 01/06/22 13:05 V13533ENM 1.17 J µg/m3 0.110 2.461,2,4-Trimethylbenzene 1 01/06/22 13:05 V13533ENM <0.236 µg/m3 0.236 2.461,3,5-Trimethylbenzene 1 01/06/22 13:05 V13533ENM <0.224 µg/m3 0.224 1.76Vinyl Acetate 1 01/06/22 13:05 V13533ENM <0.127 µg/m3 0.127 1.28Vinyl Chloride 1 01/06/22 13:05 V13533ENM 3.08 µg/m3 0.157 2.17 o-Xylene 1 01/06/22 13:05 V13533ENM 17.5 µg/m3 0.217 5.65m,p-Xylene 1 01/06/22 13:05 V13533ENM 20.6 µg/m3 0.157 2.17Xylene (Total)1 01/06/22 13:05 V13533 Surrogate: 4-Bromofluorobenzene 100 Limits: 70-130%01/06/22 13:051 ENM V13533 Qualifiers/ Definitions Estimated valueJDilution FactorDF Method Quantitation LimitMQL Page 26 of 40 , REPORT OF ANALYSISReport Number : Project Information : NC 28203 21-363-0016 01102 Hart & Hickman (Charlotte) 2923 South Tryon St. Ste 100 Alexis McKenzie Charlotte Received : 12/29/2021 RMR-002 Report Date : 01/07/2022 Sample ID : Lab No : Sampled:MP-1 91262 Matrix: 12/29/2021 10:15 Air Analytical Method: Prep Method: Test Results Units MDL MQL By Analytical Batch Date / Time Analyzed DF TO-15 Prep TO-15 Prep Batch(es):V13532 01/06/22 08:00 9.56 µg/m3 0.202 4.75Acetone 1 01/06/22 13:59 V13533ENM 0.955 J µg/m3 0.0733 1.60Benzene 1 01/06/22 13:59 V13533ENM <0.148 µg/m3 0.148 10.4Benzyl Chloride 1 01/06/22 13:59 V13533ENM <0.150 µg/m3 0.150 3.35Bromodichloromethane 1 01/06/22 13:59 V13533ENM <0.153 µg/m3 0.153 5.17Bromoform 1 01/06/22 13:59 V13533ENM <0.115 µg/m3 0.115 1.94Bromomethane 1 01/06/22 13:59 V13533ENM <0.328 µg/m3 0.328 1.111,3-Butadiene 1 01/06/22 13:59 V13533ENM 1.17 J µg/m3 0.0608 6.23Carbon Disulfide 1 01/06/22 13:59 V13533ENM <0.155 µg/m3 0.155 3.15 Carbon Tetrachloride 1 01/06/22 13:59 V13533ENM <0.107 µg/m3 0.107 2.30Chlorobenzene 1 01/06/22 13:59 V13533ENM <0.208 µg/m3 0.208 4.26Chlorodibromomethane 1 01/06/22 13:59 V13533ENM 0.860 J µg/m3 0.164 1.32Chloroethane 1 01/06/22 13:59 V13533ENM 1.26 J µg/m3 0.0864 2.44Chloroform 1 01/06/22 13:59 V13533ENM <0.0673 µg/m3 0.0673 1.03Chloromethane 1 01/06/22 13:59 V13533ENM <0.161 µg/m3 0.161 3.44Cyclohexane 1 01/06/22 13:59 V13533ENM <0.151 µg/m3 0.151 3.84 1,2-Dibromoethane 1 01/06/22 13:59 V13533ENM <0.0963 µg/m3 0.0963 3.011,2-Dichlorobenzene 1 01/06/22 13:59 V13533ENM <0.174 µg/m3 0.174 12.01,3-Dichlorobenzene 1 01/06/22 13:59 V13533ENM <0.186 µg/m3 0.186 3.011,4-Dichlorobenzene 1 01/06/22 13:59 V13533ENM 3.51 µg/m3 0.134 2.47Dichlorodifluoromethane 1 01/06/22 13:59 V13533ENM <0.101 µg/m3 0.101 2.021,1-Dichloroethane 1 01/06/22 13:59 V13533ENM 1.57 J µg/m3 0.129 2.021,2-Dichloroethane 1 01/06/22 13:59 V13533ENM Qualifiers/ Definitions Estimated valueJDilution FactorDF Method Quantitation LimitMQL Page 27 of 40 , REPORT OF ANALYSISReport Number : Project Information : NC 28203 21-363-0016 01102 Hart & Hickman (Charlotte) 2923 South Tryon St. Ste 100 Alexis McKenzie Charlotte Received : 12/29/2021 RMR-002 Report Date : 01/07/2022 Sample ID : Lab No : Sampled:MP-1 91262 Matrix: 12/29/2021 10:15 Air Analytical Method: Prep Method: Test Results Units MDL MQL By Analytical Batch Date / Time Analyzed DF TO-15 Prep TO-15 Prep Batch(es):V13532 01/06/22 08:00 <0.107 µg/m3 0.107 1.981,1-Dichloroethene 1 01/06/22 13:59 V13533ENM <0.0955 µg/m3 0.0955 1.98cis-1,2-Dichloroethene 1 01/06/22 13:59 V13533ENM <0.108 µg/m3 0.108 1.98trans-1,2-Dichloroethene 1 01/06/22 13:59 V13533ENM <0.205 µg/m3 0.205 2.311,2-Dichloropropane 1 01/06/22 13:59 V13533ENM <0.623 µg/m3 0.623 3.501,2-Dichlorotetrafluoroethane 1 01/06/22 13:59 V13533ENM <0.178 µg/m3 0.178 2.27cis-1,3-Dichloropropene 1 01/06/22 13:59 V13533ENM <0.178 µg/m3 0.178 2.27trans-1,3-Dichloropropene 1 01/06/22 13:59 V13533ENM <0.435 µg/m3 0.435 1.801,4-Dioxane 1 01/06/22 13:59 V13533ENM <0.136 µg/m3 0.136 1.80 Ethyl Acetate 1 01/06/22 13:59 V13533ENM 2.38 µg/m3 0.106 2.17Ethylbenzene 1 01/06/22 13:59 V13533ENM 1.01 J µg/m3 0.128 2.464-Ethyltoluene 1 01/06/22 13:59 V13533ENM <0.561 µg/m3 0.561 3.831,1,2-Trichloro-1,2,2-trifluoroethane 1 01/06/22 13:59 V13533ENM 1.00 J µg/m3 0.143 2.05Heptane 1 01/06/22 13:59 V13533ENM <0.330 µg/m3 0.330 5.33Hexachlorobutadiene 1 01/06/22 13:59 V13533ENM 0.659 J µg/m3 0.0472 1.76n-Hexane 1 01/06/22 13:59 V13533ENM <0.285 µg/m3 0.285 2.05 2-Hexanone 1 01/06/22 13:59 V13533ENM 4.62 J µg/m3 0.139 4.92Isopropyl Alchohol 1 01/06/22 13:59 V13533ENM 1.97 µg/m3 0.224 1.47Methyl Ethyl Ketone (MEK)1 01/06/22 13:59 V13533ENM <0.0336 µg/m3 0.0336 1.80Methyl tert-butyl ether (MTBE)1 01/06/22 13:59 V13533ENM <0.121 µg/m3 0.121 2.054-Methyl-2-Pentanone 1 01/06/22 13:59 V13533ENM 1.01 J µg/m3 0.489 1.74Methylene Chloride 1 01/06/22 13:59 V13533ENM 4.10 µg/m3 0.183 2.62Naphthalene 1 01/06/22 13:59 V13533ENM Qualifiers/ Definitions Estimated valueJDilution FactorDF Method Quantitation LimitMQL Page 28 of 40 , REPORT OF ANALYSISReport Number : Project Information : NC 28203 21-363-0016 01102 Hart & Hickman (Charlotte) 2923 South Tryon St. Ste 100 Alexis McKenzie Charlotte Received : 12/29/2021 RMR-002 Report Date : 01/07/2022 Sample ID : Lab No : Sampled:MP-1 91262 Matrix: 12/29/2021 10:15 Air Analytical Method: Prep Method: Test Results Units MDL MQL By Analytical Batch Date / Time Analyzed DF TO-15 Prep TO-15 Prep Batch(es):V13532 01/06/22 08:00 <0.242 µg/m3 0.242 0.861Propene 1 01/06/22 13:59 V13533ENM <0.124 µg/m3 0.124 2.13Styrene 1 01/06/22 13:59 V13533ENM <0.104 µg/m3 0.104 3.431,1,2,2-Tetrachloroethane 1 01/06/22 13:59 V13533ENM 0.583 J µg/m3 0.181 3.39Tetrachloroethene 1 01/06/22 13:59 V13533ENM 52.9 µg/m3 0.107 1.47Tetrahydrofuran 1 01/06/22 13:59 V13533ENM 5.29 µg/m3 0.0901 1.88Toluene 1 01/06/22 13:59 V13533ENM <0.209 µg/m3 0.209 3.711,2,4-Trichlorobenzene 1 01/06/22 13:59 V13533ENM <0.144 µg/m3 0.144 2.731,1,1-Trichloroethane 1 01/06/22 13:59 V13533ENM <0.0877 µg/m3 0.0877 2.73 1,1,2-Trichloroethane 1 01/06/22 13:59 V13533ENM <0.199 µg/m3 0.199 2.15Trichloroethene 1 01/06/22 13:59 V13533ENM 2.05 J µg/m3 0.130 2.81Trichlorofluoromethane 1 01/06/22 13:59 V13533ENM 3.59 µg/m3 0.110 2.461,2,4-Trimethylbenzene 1 01/06/22 13:59 V13533ENM 0.782 J µg/m3 0.236 2.461,3,5-Trimethylbenzene 1 01/06/22 13:59 V13533ENM <0.224 µg/m3 0.224 1.76Vinyl Acetate 1 01/06/22 13:59 V13533ENM <0.127 µg/m3 0.127 1.28Vinyl Chloride 1 01/06/22 13:59 V13533ENM 2.72 µg/m3 0.157 2.17 o-Xylene 1 01/06/22 13:59 V13533ENM 8.10 µg/m3 0.217 5.65m,p-Xylene 1 01/06/22 13:59 V13533ENM 10.8 µg/m3 0.157 2.17Xylene (Total)1 01/06/22 13:59 V13533 Surrogate: 4-Bromofluorobenzene 97.5 Limits: 70-130%01/06/22 13:591 ENM V13533 Qualifiers/ Definitions Estimated valueJDilution FactorDF Method Quantitation LimitMQL Page 29 of 40 Quality Control Data 21-363-0016Report No: Project Description: Client ID:Hart & Hickman (Charlotte) RMR-002 QC Prep Batch Method: Volatile Organic Compounds in Air- GC/MS TO-15 V13533QC Analytical Batch(es): Analysis Method: Analysis Description: TO-15 Prep QC Prep:V13532 Associated Lab Samples: 91256, 91257, 91258, 91259, 91260, 91261, 91262 LRB-V13532 Matrix: AIRLab Reagent Blank Parameter AnalyzedMQLMDLBlank ResultUnits % Recovery % Rec Limits 01/06/22 03:064.750.202<0.202µg/m3Acetone 01/06/22 03:061.600.0733<0.0733µg/m3Benzene 01/06/22 03:0610.40.148<0.148µg/m3Benzyl Chloride 01/06/22 03:063.350.150<0.150µg/m3Bromodichloromethane 01/06/22 03:065.170.153<0.153µg/m3Bromoform 01/06/22 03:061.940.115<0.115µg/m3Bromomethane 01/06/22 03:061.110.328<0.328µg/m31,3-Butadiene 01/06/22 03:066.230.0608<0.0608µg/m3Carbon Disulfide 01/06/22 03:063.150.155<0.155µg/m3Carbon Tetrachloride 01/06/22 03:062.300.107<0.107µg/m3Chlorobenzene 01/06/22 03:064.260.208<0.208µg/m3Chlorodibromomethane 01/06/22 03:061.320.164<0.164µg/m3Chloroethane 01/06/22 03:062.440.0864<0.0864µg/m3Chloroform 01/06/22 03:061.030.0673<0.0673µg/m3Chloromethane 01/06/22 03:063.440.161<0.161µg/m3Cyclohexane 01/06/22 03:063.840.151<0.151µg/m31,2-Dibromoethane 01/06/22 03:063.010.0963<0.0963µg/m31,2-Dichlorobenzene 01/06/22 03:0612.00.174<0.174µg/m31,3-Dichlorobenzene 01/06/22 03:063.010.186<0.186µg/m31,4-Dichlorobenzene 01/06/22 03:062.470.134<0.134µg/m3Dichlorodifluoromethane 01/06/22 03:062.020.101<0.101µg/m31,1-Dichloroethane 01/06/22 03:062.020.129<0.129µg/m31,2-Dichloroethane 01/06/22 03:061.980.107<0.107µg/m31,1-Dichloroethene 01/06/22 03:061.980.0955<0.0955µg/m3cis-1,2-Dichloroethene 01/06/22 03:061.980.108<0.108µg/m3trans-1,2-Dichloroethene 01/06/22 03:062.310.205<0.205µg/m31,2-Dichloropropane 01/06/22 03:063.500.623<0.623µg/m31,2-Dichlorotetrafluoroethane Page 1 of 5Date:01/07/2022 08:59 AM Page 30 of 40 Quality Control Data 21-363-0016Report No: Project Description: Client ID:Hart & Hickman (Charlotte) RMR-002 QC Prep Batch Method: Volatile Organic Compounds in Air- GC/MS TO-15 V13533QC Analytical Batch(es): Analysis Method: Analysis Description: TO-15 Prep QC Prep:V13532 Associated Lab Samples: 91256, 91257, 91258, 91259, 91260, 91261, 91262 LRB-V13532 Matrix: AIRLab Reagent Blank Parameter AnalyzedMQLMDLBlank ResultUnits % Recovery % Rec Limits 01/06/22 03:062.270.178<0.178µg/m3cis-1,3-Dichloropropene 01/06/22 03:062.270.178<0.178µg/m3trans-1,3-Dichloropropene 01/06/22 03:061.800.435<0.435µg/m31,4-Dioxane 01/06/22 03:061.800.136<0.136µg/m3Ethyl Acetate 01/06/22 03:062.170.106<0.106µg/m3Ethylbenzene 01/06/22 03:062.460.128<0.128µg/m34-Ethyltoluene 01/06/22 03:063.830.561<0.561µg/m31,1,2-Trichloro-1,2,2-trifluoroethane 01/06/22 03:062.050.143<0.143µg/m3Heptane 01/06/22 03:065.330.330<0.330µg/m3Hexachlorobutadiene 01/06/22 03:061.760.0472<0.0472µg/m3n-Hexane 01/06/22 03:062.050.285<0.285µg/m32-Hexanone 01/06/22 03:064.920.139<0.139µg/m3Isopropyl Alchohol 01/06/22 03:061.470.224<0.224µg/m3Methyl Ethyl Ketone (MEK) 01/06/22 03:061.800.0336<0.0336µg/m3Methyl tert-butyl ether (MTBE) 01/06/22 03:062.050.121<0.121µg/m34-Methyl-2-Pentanone 01/06/22 03:061.740.489<0.489µg/m3Methylene Chloride 01/06/22 03:062.620.183<0.183µg/m3Naphthalene 01/06/22 03:060.8610.242<0.242µg/m3Propene 01/06/22 03:062.130.124<0.124µg/m3Styrene 01/06/22 03:063.430.104<0.104µg/m31,1,2,2-Tetrachloroethane 01/06/22 03:063.390.181<0.181µg/m3Tetrachloroethene 01/06/22 03:061.470.107<0.107µg/m3Tetrahydrofuran 01/06/22 03:061.880.0901<0.0901µg/m3Toluene 01/06/22 03:063.710.209<0.209µg/m31,2,4-Trichlorobenzene 01/06/22 03:062.730.144<0.144µg/m31,1,1-Trichloroethane 01/06/22 03:062.730.0877<0.0877µg/m31,1,2-Trichloroethane 01/06/22 03:062.150.199<0.199µg/m3Trichloroethene Page 2 of 5Date:01/07/2022 08:59 AM Page 31 of 40 Quality Control Data 21-363-0016Report No: Project Description: Client ID:Hart & Hickman (Charlotte) RMR-002 QC Prep Batch Method: Volatile Organic Compounds in Air- GC/MS TO-15 V13533QC Analytical Batch(es): Analysis Method: Analysis Description: TO-15 Prep QC Prep:V13532 Associated Lab Samples: 91256, 91257, 91258, 91259, 91260, 91261, 91262 LRB-V13532 Matrix: AIRLab Reagent Blank Parameter AnalyzedMQLMDLBlank ResultUnits % Recovery % Rec Limits 01/06/22 03:062.810.130<0.130µg/m3Trichlorofluoromethane 01/06/22 03:062.460.110<0.110µg/m31,2,4-Trimethylbenzene 01/06/22 03:062.460.236<0.236µg/m31,3,5-Trimethylbenzene 01/06/22 03:061.760.224<0.224µg/m3Vinyl Acetate 01/06/22 03:061.280.127<0.127µg/m3Vinyl Chloride 01/06/22 03:062.170.157<0.157µg/m3o-Xylene 01/06/22 03:065.650.217<0.217µg/m3m,p-Xylene 01/06/22 03:064-Bromofluorobenzene (S)97.4 70-130 LCS-V13532Laboratory Control Sample Parameter LCS %RecLCS Result Spike Conc.Units % Rec Limits 74.38.8511.9µg/m3Acetone 70-130 80.012.816.0µg/m3Benzene 70-130 86.122.325.9µg/m3Benzyl Chloride 70-130 78.226.233.5µg/m3Bromodichloromethane 70-130 88.045.551.7µg/m3Bromoform 70-130 78.815.319.4µg/m3Bromomethane 70-130 82.09.1111.1µg/m31,3-Butadiene 70-130 88.413.815.6µg/m3Carbon Disulfide 70-130 77.124.331.5µg/m3Carbon Tetrachloride 70-130 89.520.623.0µg/m3Chlorobenzene 70-130 87.337.242.6µg/m3Chlorodibromomethane 70-130 77.210.213.2µg/m3Chloroethane 70-130 81.519.924.4µg/m3Chloroform 70-130 83.68.6210.3µg/m3Chloromethane 70-130 79.013.617.2µg/m3Cyclohexane 70-130 Page 3 of 5Date:01/07/2022 08:59 AM Page 32 of 40 Quality Control Data 21-363-0016Report No: Project Description: Client ID:Hart & Hickman (Charlotte) RMR-002 QC Prep Batch Method: Volatile Organic Compounds in Air- GC/MS TO-15 V13533QC Analytical Batch(es): Analysis Method: Analysis Description: TO-15 Prep QC Prep:V13532 LCS-V13532Laboratory Control Sample Parameter LCS %RecLCS Result Spike Conc.Units % Rec Limits 90.134.638.4µg/m31,2-Dibromoethane 70-130 85.325.730.1µg/m31,2-Dichlorobenzene 70-130 82.024.730.1µg/m31,3-Dichlorobenzene 70-130 79.423.930.1µg/m31,4-Dichlorobenzene 70-130 80.920.024.7µg/m3Dichlorodifluoromethane 70-130 85.117.220.2µg/m31,1-Dichloroethane 70-130 86.117.420.2µg/m31,2-Dichloroethane 70-130 87.317.319.8µg/m31,1-Dichloroethene 70-130 87.817.419.8µg/m3cis-1,2-Dichloroethene 70-130 88.317.519.8µg/m3trans-1,2-Dichloroethene 70-130 82.219.023.1µg/m31,2-Dichloropropane 70-130 83.729.335.0µg/m31,2-Dichlorotetrafluoroethane 70-130 81.418.522.7µg/m3cis-1,3-Dichloropropene 70-130 81.418.522.7µg/m3trans-1,3-Dichloropropene 70-130 72.713.118.0µg/m31,4-Dioxane 70-130 83.815.118.0µg/m3Ethyl Acetate 70-130 87.519.021.7µg/m3Ethylbenzene 70-130 86.921.424.6µg/m34-Ethyltoluene 70-130 79.830.638.3µg/m31,1,2-Trichloro-1,2,2-trifluoroethane 70-130 82.416.920.5µg/m3Heptane 70-130 89.447.753.3µg/m3Hexachlorobutadiene 70-130 79.514.017.6µg/m3n-Hexane 70-130 88.718.220.5µg/m32-Hexanone 70-130 83.710.312.3µg/m3Isopropyl Alchohol 70-130 78.311.614.8µg/m3Methyl Ethyl Ketone (MEK)70-130 76.113.718.0µg/m3Methyl tert-butyl ether (MTBE)70-130 82.917.020.5µg/m34-Methyl-2-Pentanone 70-130 Page 4 of 5Date:01/07/2022 08:59 AM Page 33 of 40 Quality Control Data 21-363-0016Report No: Project Description: Client ID:Hart & Hickman (Charlotte) RMR-002 QC Prep Batch Method: Volatile Organic Compounds in Air- GC/MS TO-15 V13533QC Analytical Batch(es): Analysis Method: Analysis Description: TO-15 Prep QC Prep:V13532 LCS-V13532Laboratory Control Sample Parameter LCS %RecLCS Result Spike Conc.Units % Rec Limits 79.813.917.4µg/m3Methylene Chloride 70-130 86.622.726.2µg/m3Naphthalene 70-130 79.56.858.61µg/m3Propene 70-130 84.017.921.3µg/m3Styrene 70-130 86.829.834.3µg/m31,1,2,2-Tetrachloroethane 70-130 87.929.833.9µg/m3Tetrachloroethene 70-130 79.511.714.7µg/m3Tetrahydrofuran 70-130 81.915.418.8µg/m3Toluene 70-130 92.434.337.1µg/m31,2,4-Trichlorobenzene 70-130 77.221.127.3µg/m31,1,1-Trichloroethane 70-130 89.724.527.3µg/m31,1,2-Trichloroethane 70-130 76.920.726.9µg/m3Trichloroethene 70-130 87.124.528.1µg/m3Trichlorofluoromethane 70-130 87.321.524.6µg/m31,2,4-Trimethylbenzene 70-130 94.323.224.6µg/m31,3,5-Trimethylbenzene 70-130 79.514.017.6µg/m3Vinyl Acetate 70-130 77.99.9812.8µg/m3Vinyl Chloride 70-130 86.118.721.7µg/m3o-Xylene 70-130 86.437.543.4µg/m3m,p-Xylene 70-130 1024-Bromofluorobenzene (S)70-130 Page 5 of 5Date:01/07/2022 08:59 AM Page 34 of 40 Fed Ex UPS US Postal Client Lab Courier Other : Shipment Receipt Form Customer Number: Customer Name: Report Number:21-363-0016 Hart & Hickman (Charlotte) 01102 Shipping Method Shipping container/cooler uncompromised? Thermometer ID:IRT-15 N/A Chain of Custody (COC) present?Yes No Yes No Not Present Yes No Not Present Yes No COC agrees with sample label(s)? Yes No COC properly completed Samples in proper containers? Sample containers intact? Sufficient sample volume for indicated test(s)? All samples received within holding time? Cooler temperature in compliance? Yes No Yes No Yes No Yes No Yes No Yes NoCooler/Samples arrived at the laboratory on ice. Samples were considered acceptable as cooling process had begun. Yes No Yes No N/A Yes No N/A Yes No N/ASoil VOA method 5035 – compliance criteria met Water - Sample containers properly preserved Water - VOA vials free of headspace Yes No N/A Trip Blanks received with VOAs Low concentration EnCore samplers (48 hr) High concentration pre-weighed (methanol -14 d) Low conc pre-weighed vials (Sod Bis -14 d) High concentration container (48 hr) Custody seals intact on shipping container/cooler? Custody seals intact on sample bottles? Number of coolers/boxes received Yes No 1 Signature:Sarah J. Locklear Date & Time:12/29/2021 15:56:54 Special precautions or instructions included? Comments: Page 35 of 40 Page 36 of 40 Page 37 of 40 Page 38 of 40 Page 39 of 40 Page 40 of 40 Laboratory's liability in any claim relating to analyses performed shall be limited to, at laboratory's option, repeating the analysis in question at laboratory's expense, or the refund of the charges paid for performance of said analysis. 5/20/2022 Hart & Hickman (Charlotte) 2923 South Tryon St. Ste 100 Charlotte, NC, 28203 Ref: Analytical Testing Lab Report Number: 22-132-0016 Client Project Description: AVA-001 Waypoint Analytical, LLC (Charlotte) received sample(s) on 5/12/2022 for the analyses presented in the following report. The above referenced project has been analyzed per your instructions. The analyses were performed in accordance with the applicable analytical method. The analytical data has been validated using standard quality control measures performed as required by the analytical method. Quality Assurance, method validations, instrumentation maintenance and calibration for all parameters were performed in accordance with guidelines established by the USEPA (including 40 CFR 136 Method Update Rule May 2021) unless otherwise indicated. Certain parameters (chlorine, pH, dissolved oxygen, sulfite...) are required to be analyzed within 15 minutes of sampling. Usually, but not always, any field parameter analyzed at the laboratory is outside of this holding time. Refer to sample analysis time for confirmation of holding time compliance. The results are shown on the attached Report of Analysis(s). Results for solid matrices are reported on an as- received basis unless otherwise indicated. This report shall not be reproduced except in full and relates only to the samples included in this report. Please do not hesitate to contact me or client services if you have any questions or need additional information. Sincerely, Angela D Overcash Senior Project Manager Page 1 of 31 Certification Summary Laboratory ID: WP CNC: Waypoint Analytical Carolina, Inc. (C), Charlotte, NC State Program Lab ID Expiration Date 07/31/202237735State ProgramNorth Carolina 12/31/2022402State ProgramNorth Carolina 07/31/202299012State ProgramSouth Carolina 12/31/202299012State ProgramSouth Carolina Page 1 of 1 00016/22-132-0016 Page 2 of 31 Report Number: Sample Summary Table Client Project Description: 22-132-0016 AVA-001 Lab No Client Sample ID Matrix Date Collected Date Received 05/11/2022 13:40Air 89642 SS-MP-14 05/12/2022 12:15 05/11/2022Air 89643 SS-MP-DUP 05/12/2022 12:15 05/11/2022 13:00Air 89644 SS-MP-12 05/12/2022 12:15 05/11/2022 14:27Air 89645 SS-MP-10 05/12/2022 12:15 05/11/2022 14:57Air 89646 SS-MP-9 05/12/2022 12:15 Page 3 of 31 Summary of Detected Analytes QualifiersAnalyzedUnitsResult Report Number: Client Sample ID Method Parameters Lab Sample ID 22-132-0016 Report Limit Project:AVA-001 V 89642SS-MP-14 23.2 05/18/2022 15:57TO-15 Acetone µg/m3 0.202 J0.441 05/18/2022 15:57TO-15 Benzene µg/m3 0.0733 JB1.81 05/18/2022 15:57TO-15 Carbon Disulfide µg/m3 0.0608 J0.454 05/18/2022 15:57TO-15 Chloroform µg/m3 0.0864 J0.368 05/18/2022 15:57TO-15 Chloromethane µg/m3 0.0673 J1.44 05/18/2022 15:57TO-15 Cyclohexane µg/m3 0.161 33.0 05/18/2022 15:57TO-15 1,3-Dichlorobenzene µg/m3 0.174 2.83 05/18/2022 15:57TO-15 Dichlorodifluoromethane µg/m3 0.134 J0.352 05/18/2022 15:57TO-15 Ethylbenzene µg/m3 0.106 J1.06 05/18/2022 15:57TO-15 Isopropyl Alchohol µg/m3 0.139 2.85 05/18/2022 15:57TO-15 Methyl Ethyl Ketone (MEK)µg/m3 0.224 J1.55 05/18/2022 15:57TO-15 Methylene Chloride µg/m3 0.489 J0.477 05/18/2022 15:57TO-15 Naphthalene µg/m3 0.183 2.72 05/18/2022 15:57TO-15 Tetrahydrofuran µg/m3 0.107 J1.53 05/18/2022 15:57TO-15 Toluene µg/m3 0.0901 J2.03 05/18/2022 15:57TO-15 Trichlorofluoromethane µg/m3 0.130 J0.993 05/18/2022 15:57TO-15 1,2,4-Trimethylbenzene µg/m3 0.110 J0.617 05/18/2022 15:57TO-15 o-Xylene µg/m3 0.157 J1.26 05/18/2022 15:57TO-15 m,p-Xylene µg/m3 0.217 J1.88 05/18/2022 15:57TO-15 Xylene (Total)µg/m3 0.157 V 89643SS-MP-DUP 24.6 05/18/2022 16:54TO-15 Acetone µg/m3 0.202 J0.466 05/18/2022 16:54TO-15 Benzene µg/m3 0.0733 JB2.97 05/18/2022 16:54TO-15 Carbon Disulfide µg/m3 0.0608 J0.620 05/18/2022 16:54TO-15 Chloroform µg/m3 0.0864 J0.351 05/18/2022 16:54TO-15 Chloromethane µg/m3 0.0673 J1.36 05/18/2022 16:54TO-15 Cyclohexane µg/m3 0.161 33.7 05/18/2022 16:54TO-15 1,3-Dichlorobenzene µg/m3 0.174 2.90 05/18/2022 16:54TO-15 Dichlorodifluoromethane µg/m3 0.134 3.89 05/18/2022 16:54TO-15 cis-1,2-Dichloroethene µg/m3 0.0955 J0.434 05/18/2022 16:54TO-15 Ethylbenzene µg/m3 0.106 J0.381 05/18/2022 16:54TO-15 Heptane µg/m3 0.143 J1.53 05/18/2022 16:54TO-15 Isopropyl Alchohol µg/m3 0.139 3.22 05/18/2022 16:54TO-15 Methyl Ethyl Ketone (MEK)µg/m3 0.224 J1.47 05/18/2022 16:54TO-15 Methylene Chloride µg/m3 0.489 J0.435 05/18/2022 16:54TO-15 Naphthalene µg/m3 0.183 Page 4 of 31 Summary of Detected Analytes QualifiersAnalyzedUnitsResult Report Number: Client Sample ID Method Parameters Lab Sample ID 22-132-0016 Report Limit Project:AVA-001 V 89643SS-MP-DUP J2.16 05/18/2022 16:54TO-15 Tetrachloroethene µg/m3 0.181 2.81 05/18/2022 16:54TO-15 Tetrahydrofuran µg/m3 0.107 J1.57 05/18/2022 16:54TO-15 Toluene µg/m3 0.0901 J0.580 05/18/2022 16:54TO-15 Trichloroethene µg/m3 0.199 J2.02 05/18/2022 16:54TO-15 Trichlorofluoromethane µg/m3 0.130 J1.08 05/18/2022 16:54TO-15 1,2,4-Trimethylbenzene µg/m3 0.110 J0.790 05/18/2022 16:54TO-15 o-Xylene µg/m3 0.157 J1.74 05/18/2022 16:54TO-15 m,p-Xylene µg/m3 0.217 J2.53 05/18/2022 16:54TO-15 Xylene (Total)µg/m3 0.157 V 89644SS-MP-12 599 05/17/2022 16:55TO-15 Acetone µg/m3 4.04 J0.537 05/18/2022 17:45TO-15 Benzene µg/m3 0.0733 J0.757 05/18/2022 17:45TO-15 Chloroform µg/m3 0.0864 J0.454 05/18/2022 17:45TO-15 Chloromethane µg/m3 0.0673 J1.81 05/18/2022 17:45TO-15 Cyclohexane µg/m3 0.161 30.0 05/18/2022 17:45TO-15 1,3-Dichlorobenzene µg/m3 0.174 4.60 05/18/2022 17:45TO-15 Dichlorodifluoromethane µg/m3 0.134 J1.10 05/18/2022 17:45TO-15 1,2-Dichloropropane µg/m3 0.205 1.86 05/18/2022 17:45TO-15 Ethyl Acetate µg/m3 0.136 J0.382 05/18/2022 17:45TO-15 Ethylbenzene µg/m3 0.106 J0.545 05/18/2022 17:45TO-15 Heptane µg/m3 0.143 18.7 05/18/2022 17:45TO-15 Isopropyl Alchohol µg/m3 0.139 4.56 05/18/2022 17:45TO-15 Methyl Ethyl Ketone (MEK)µg/m3 0.224 6.39 05/18/2022 17:45TO-15 Methylene Chloride µg/m3 0.489 3.19 05/18/2022 17:45TO-15 Tetrahydrofuran µg/m3 0.107 2.60 05/18/2022 17:45TO-15 Toluene µg/m3 0.0901 5.05 05/18/2022 17:45TO-15 Trichlorofluoromethane µg/m3 0.130 J0.767 05/18/2022 17:45TO-15 1,2,4-Trimethylbenzene µg/m3 0.110 J0.647 05/18/2022 17:45TO-15 o-Xylene µg/m3 0.157 J1.61 05/18/2022 17:45TO-15 m,p-Xylene µg/m3 0.217 J2.26 05/18/2022 17:45TO-15 Xylene (Total)µg/m3 0.157 V 89645SS-MP-10 J0.809 05/18/2022 22:00TO-15 Chloromethane µg/m3 0.269 J2.43 05/18/2022 22:00TO-15 1,3-Dichlorobenzene µg/m3 0.697 J3.14 05/18/2022 22:00TO-15 Dichlorodifluoromethane µg/m3 0.536 189 05/18/2022 22:00TO-15 Methyl Ethyl Ketone (MEK)µg/m3 0.896 Page 5 of 31 Summary of Detected Analytes QualifiersAnalyzedUnitsResult Report Number: Client Sample ID Method Parameters Lab Sample ID 22-132-0016 Report Limit Project:AVA-001 V 89645SS-MP-10 1410 05/17/2022 17:34TO-15 Tetrahydrofuran µg/m3 2.14 J1.37 05/18/2022 22:00TO-15 Toluene µg/m3 0.361 J2.29 05/18/2022 22:00TO-15 Trichlorofluoromethane µg/m3 0.518 V 89646SS-MP-9 7.73 05/18/2022 18:39TO-15 Acetone µg/m3 0.202 J0.709 05/18/2022 18:39TO-15 Benzene µg/m3 0.0733 JB0.972 05/18/2022 18:39TO-15 Carbon Disulfide µg/m3 0.0608 J1.98 05/18/2022 18:39TO-15 Cyclohexane µg/m3 0.161 J0.619 05/18/2022 18:39TO-15 1,3-Dichlorobenzene µg/m3 0.174 2.90 05/18/2022 18:39TO-15 Dichlorodifluoromethane µg/m3 0.134 J2.31 05/18/2022 18:39TO-15 Isopropyl Alchohol µg/m3 0.139 J1.40 05/18/2022 18:39TO-15 Methyl Ethyl Ketone (MEK)µg/m3 0.224 J0.955 05/18/2022 18:39TO-15 Methylene Chloride µg/m3 0.489 J0.814 05/18/2022 18:39TO-15 Tetrachloroethene µg/m3 0.181 2.79 05/18/2022 18:39TO-15 Tetrahydrofuran µg/m3 0.107 J0.746 05/18/2022 18:39TO-15 Toluene µg/m3 0.0901 J1.96 05/18/2022 18:39TO-15 Trichlorofluoromethane µg/m3 0.130 J0.516 05/18/2022 18:39TO-15 1,2,4-Trimethylbenzene µg/m3 0.110 J0.412 05/18/2022 18:39TO-15 o-Xylene µg/m3 0.157 J0.899 05/18/2022 18:39TO-15 m,p-Xylene µg/m3 0.217 J1.31 05/18/2022 18:39TO-15 Xylene (Total)µg/m3 0.157 Page 6 of 31 Client: Hart & Hickman (Charlotte) CASE NARRATIVE Project: AVA-001 Lab Report Number: 22-132-0016 Date: 5/20/2022 Volatile Organic Compounds in Air- GC/MS Method TO-15 Sample 89645 (SS-MP-10) QC Batch No: V18905/V18900 The sample was diluted due to the nature of the sample matrix. Reporting limits have been adjusted accordingly. Page 7 of 31 , REPORT OF ANALYSISReport Number : Project Information : NC 28203 22-132-0016 01102 Hart & Hickman (Charlotte) 2923 South Tryon St. Ste 100 Charlotte Received : 05/12/2022 AVA-001 Report Date : 05/20/2022 Sample ID : Lab No : Sampled:SS-MP-14 89642 Matrix: 5/11/2022 13:40 Air Analytical Method: Prep Method: Test Results Units MDL MQL By Analytical Batch Date / Time Analyzed DF TO-15 Prep TO-15 Prep Batch(es):V18900 05/18/22 09:00 23.2 µg/m3 0.202 4.75Acetone 1 05/18/22 15:57 V18905ANG 0.441 J µg/m3 0.0733 1.60Benzene 1 05/18/22 15:57 V18905ANG <0.148 µg/m3 0.148 10.4Benzyl Chloride 1 05/18/22 15:57 V18905ANG <0.150 µg/m3 0.150 3.35Bromodichloromethane 1 05/18/22 15:57 V18905ANG <0.153 µg/m3 0.153 5.17Bromoform 1 05/18/22 15:57 V18905ANG <0.115 µg/m3 0.115 1.94Bromomethane 1 05/18/22 15:57 V18905ANG <0.328 µg/m3 0.328 1.111,3-Butadiene 1 05/18/22 15:57 V18905ANG 1.81 JB µg/m3 0.0608 6.23Carbon Disulfide 1 05/18/22 15:57 V18905ANG <0.155 µg/m3 0.155 3.15 Carbon Tetrachloride 1 05/18/22 15:57 V18905ANG <0.107 µg/m3 0.107 2.30Chlorobenzene 1 05/18/22 15:57 V18905ANG <0.208 µg/m3 0.208 4.26Chlorodibromomethane 1 05/18/22 15:57 V18905ANG <0.164 µg/m3 0.164 1.32Chloroethane 1 05/18/22 15:57 V18905ANG 0.454 J µg/m3 0.0864 2.44Chloroform 1 05/18/22 15:57 V18905ANG 0.368 J µg/m3 0.0673 1.03Chloromethane 1 05/18/22 15:57 V18905ANG 1.44 J µg/m3 0.161 3.44Cyclohexane 1 05/18/22 15:57 V18905ANG <0.151 µg/m3 0.151 3.84 1,2-Dibromoethane 1 05/18/22 15:57 V18905ANG <0.0963 µg/m3 0.0963 3.011,2-Dichlorobenzene 1 05/18/22 15:57 V18905ANG 33.0 µg/m3 0.174 12.01,3-Dichlorobenzene 1 05/18/22 15:57 V18905ANG <0.186 µg/m3 0.186 3.011,4-Dichlorobenzene 1 05/18/22 15:57 V18905ANG 2.83 µg/m3 0.134 2.47Dichlorodifluoromethane 1 05/18/22 15:57 V18905ANG <0.101 µg/m3 0.101 2.021,1-Dichloroethane 1 05/18/22 15:57 V18905ANG <0.129 µg/m3 0.129 2.021,2-Dichloroethane 1 05/18/22 15:57 V18905ANG Qualifiers/ Definitions Dilution FactorDFAnalyte detected in blankB Method Quantitation LimitMQLEstimated valueJ Page 8 of 31 , REPORT OF ANALYSISReport Number : Project Information : NC 28203 22-132-0016 01102 Hart & Hickman (Charlotte) 2923 South Tryon St. Ste 100 Charlotte Received : 05/12/2022 AVA-001 Report Date : 05/20/2022 Sample ID : Lab No : Sampled:SS-MP-14 89642 Matrix: 5/11/2022 13:40 Air Analytical Method: Prep Method: Test Results Units MDL MQL By Analytical Batch Date / Time Analyzed DF TO-15 Prep TO-15 Prep Batch(es):V18900 05/18/22 09:00 <0.107 µg/m3 0.107 1.981,1-Dichloroethene 1 05/18/22 15:57 V18905ANG <0.0955 µg/m3 0.0955 1.98cis-1,2-Dichloroethene 1 05/18/22 15:57 V18905ANG <0.108 µg/m3 0.108 1.98trans-1,2-Dichloroethene 1 05/18/22 15:57 V18905ANG <0.205 µg/m3 0.205 2.311,2-Dichloropropane 1 05/18/22 15:57 V18905ANG <0.623 µg/m3 0.623 3.501,2-Dichlorotetrafluoroethane 1 05/18/22 15:57 V18905ANG <0.178 µg/m3 0.178 2.27cis-1,3-Dichloropropene 1 05/18/22 15:57 V18905ANG <0.178 µg/m3 0.178 2.27trans-1,3-Dichloropropene 1 05/18/22 15:57 V18905ANG <0.435 µg/m3 0.435 1.801,4-Dioxane 1 05/18/22 15:57 V18905ANG <0.136 µg/m3 0.136 1.80 Ethyl Acetate 1 05/18/22 15:57 V18905ANG 0.352 J µg/m3 0.106 2.17Ethylbenzene 1 05/18/22 15:57 V18905ANG <0.128 µg/m3 0.128 2.464-Ethyltoluene 1 05/18/22 15:57 V18905ANG <0.561 µg/m3 0.561 3.831,1,2-Trichloro-1,2,2-trifluoroethane 1 05/18/22 15:57 V18905ANG <0.143 µg/m3 0.143 2.05Heptane 1 05/18/22 15:57 V18905ANG <0.330 µg/m3 0.330 5.33Hexachlorobutadiene 1 05/18/22 15:57 V18905ANG <0.0472 µg/m3 0.0472 1.76n-Hexane 1 05/18/22 15:57 V18905ANG <0.285 µg/m3 0.285 2.05 2-Hexanone 1 05/18/22 15:57 V18905ANG 1.06 J µg/m3 0.139 4.92Isopropyl Alchohol 1 05/18/22 15:57 V18905ANG 2.85 µg/m3 0.224 1.47Methyl Ethyl Ketone (MEK)1 05/18/22 15:57 V18905ANG <0.0336 µg/m3 0.0336 1.80Methyl tert-butyl ether (MTBE)1 05/18/22 15:57 V18905ANG <0.121 µg/m3 0.121 2.054-Methyl-2-Pentanone 1 05/18/22 15:57 V18905ANG 1.55 J µg/m3 0.489 1.74Methylene Chloride 1 05/18/22 15:57 V18905ANG 0.477 J µg/m3 0.183 2.62Naphthalene 1 05/18/22 15:57 V18905ANG Qualifiers/ Definitions Dilution FactorDFAnalyte detected in blankB Method Quantitation LimitMQLEstimated valueJ Page 9 of 31 , REPORT OF ANALYSISReport Number : Project Information : NC 28203 22-132-0016 01102 Hart & Hickman (Charlotte) 2923 South Tryon St. Ste 100 Charlotte Received : 05/12/2022 AVA-001 Report Date : 05/20/2022 Sample ID : Lab No : Sampled:SS-MP-14 89642 Matrix: 5/11/2022 13:40 Air Analytical Method: Prep Method: Test Results Units MDL MQL By Analytical Batch Date / Time Analyzed DF TO-15 Prep TO-15 Prep Batch(es):V18900 05/18/22 09:00 <0.242 µg/m3 0.242 0.861Propene 1 05/18/22 15:57 V18905ANG <0.124 µg/m3 0.124 2.13Styrene 1 05/18/22 15:57 V18905ANG <0.104 µg/m3 0.104 3.431,1,2,2-Tetrachloroethane 1 05/18/22 15:57 V18905ANG <0.181 µg/m3 0.181 3.39Tetrachloroethene 1 05/18/22 15:57 V18905ANG 2.72 µg/m3 0.107 1.47Tetrahydrofuran 1 05/18/22 15:57 V18905ANG 1.53 J µg/m3 0.0901 1.88Toluene 1 05/18/22 15:57 V18905ANG <0.209 µg/m3 0.209 3.711,2,4-Trichlorobenzene 1 05/18/22 15:57 V18905ANG <0.144 µg/m3 0.144 2.731,1,1-Trichloroethane 1 05/18/22 15:57 V18905ANG <0.0877 µg/m3 0.0877 2.73 1,1,2-Trichloroethane 1 05/18/22 15:57 V18905ANG <0.199 µg/m3 0.199 2.15Trichloroethene 1 05/18/22 15:57 V18905ANG 2.03 J µg/m3 0.130 2.81Trichlorofluoromethane 1 05/18/22 15:57 V18905ANG 0.993 J µg/m3 0.110 2.461,2,4-Trimethylbenzene 1 05/18/22 15:57 V18905ANG <0.236 µg/m3 0.236 2.461,3,5-Trimethylbenzene 1 05/18/22 15:57 V18905ANG <0.224 µg/m3 0.224 1.76Vinyl Acetate 1 05/18/22 15:57 V18905ANG <0.127 µg/m3 0.127 1.28Vinyl Chloride 1 05/18/22 15:57 V18905ANG 0.617 J µg/m3 0.157 2.17 o-Xylene 1 05/18/22 15:57 V18905ANG 1.26 J µg/m3 0.217 5.65m,p-Xylene 1 05/18/22 15:57 V18905ANG 1.88 J µg/m3 0.157 2.17Xylene (Total)1 05/18/22 15:57 V18905 Surrogate: 4-Bromofluorobenzene 83.0 Limits: 70-130%05/18/22 15:571 ANG V18905 Qualifiers/ Definitions Dilution FactorDFAnalyte detected in blankB Method Quantitation LimitMQLEstimated valueJ Page 10 of 31 , REPORT OF ANALYSISReport Number : Project Information : NC 28203 22-132-0016 01102 Hart & Hickman (Charlotte) 2923 South Tryon St. Ste 100 Charlotte Received : 05/12/2022 AVA-001 Report Date : 05/20/2022 Sample ID : Lab No : Sampled:SS-MP-DUP 89643 Matrix: 5/11/2022 0:00 Air Analytical Method: Prep Method: Test Results Units MDL MQL By Analytical Batch Date / Time Analyzed DF TO-15 Prep TO-15 Prep Batch(es):V18900 05/18/22 09:00 24.6 µg/m3 0.202 4.75Acetone 1 05/18/22 16:54 V18905ANG 0.466 J µg/m3 0.0733 1.60Benzene 1 05/18/22 16:54 V18905ANG <0.148 µg/m3 0.148 10.4Benzyl Chloride 1 05/18/22 16:54 V18905ANG <0.150 µg/m3 0.150 3.35Bromodichloromethane 1 05/18/22 16:54 V18905ANG <0.153 µg/m3 0.153 5.17Bromoform 1 05/18/22 16:54 V18905ANG <0.115 µg/m3 0.115 1.94Bromomethane 1 05/18/22 16:54 V18905ANG <0.328 µg/m3 0.328 1.111,3-Butadiene 1 05/18/22 16:54 V18905ANG 2.97 JB µg/m3 0.0608 6.23Carbon Disulfide 1 05/18/22 16:54 V18905ANG <0.155 µg/m3 0.155 3.15 Carbon Tetrachloride 1 05/18/22 16:54 V18905ANG <0.107 µg/m3 0.107 2.30Chlorobenzene 1 05/18/22 16:54 V18905ANG <0.208 µg/m3 0.208 4.26Chlorodibromomethane 1 05/18/22 16:54 V18905ANG <0.164 µg/m3 0.164 1.32Chloroethane 1 05/18/22 16:54 V18905ANG 0.620 J µg/m3 0.0864 2.44Chloroform 1 05/18/22 16:54 V18905ANG 0.351 J µg/m3 0.0673 1.03Chloromethane 1 05/18/22 16:54 V18905ANG 1.36 J µg/m3 0.161 3.44Cyclohexane 1 05/18/22 16:54 V18905ANG <0.151 µg/m3 0.151 3.84 1,2-Dibromoethane 1 05/18/22 16:54 V18905ANG <0.0963 µg/m3 0.0963 3.011,2-Dichlorobenzene 1 05/18/22 16:54 V18905ANG 33.7 µg/m3 0.174 12.01,3-Dichlorobenzene 1 05/18/22 16:54 V18905ANG <0.186 µg/m3 0.186 3.011,4-Dichlorobenzene 1 05/18/22 16:54 V18905ANG 2.90 µg/m3 0.134 2.47Dichlorodifluoromethane 1 05/18/22 16:54 V18905ANG <0.101 µg/m3 0.101 2.021,1-Dichloroethane 1 05/18/22 16:54 V18905ANG <0.129 µg/m3 0.129 2.021,2-Dichloroethane 1 05/18/22 16:54 V18905ANG Qualifiers/ Definitions Dilution FactorDFAnalyte detected in blankB Method Quantitation LimitMQLEstimated valueJ Page 11 of 31 , REPORT OF ANALYSISReport Number : Project Information : NC 28203 22-132-0016 01102 Hart & Hickman (Charlotte) 2923 South Tryon St. Ste 100 Charlotte Received : 05/12/2022 AVA-001 Report Date : 05/20/2022 Sample ID : Lab No : Sampled:SS-MP-DUP 89643 Matrix: 5/11/2022 0:00 Air Analytical Method: Prep Method: Test Results Units MDL MQL By Analytical Batch Date / Time Analyzed DF TO-15 Prep TO-15 Prep Batch(es):V18900 05/18/22 09:00 <0.107 µg/m3 0.107 1.981,1-Dichloroethene 1 05/18/22 16:54 V18905ANG 3.89 µg/m3 0.0955 1.98cis-1,2-Dichloroethene 1 05/18/22 16:54 V18905ANG <0.108 µg/m3 0.108 1.98trans-1,2-Dichloroethene 1 05/18/22 16:54 V18905ANG <0.205 µg/m3 0.205 2.311,2-Dichloropropane 1 05/18/22 16:54 V18905ANG <0.623 µg/m3 0.623 3.501,2-Dichlorotetrafluoroethane 1 05/18/22 16:54 V18905ANG <0.178 µg/m3 0.178 2.27cis-1,3-Dichloropropene 1 05/18/22 16:54 V18905ANG <0.178 µg/m3 0.178 2.27trans-1,3-Dichloropropene 1 05/18/22 16:54 V18905ANG <0.435 µg/m3 0.435 1.801,4-Dioxane 1 05/18/22 16:54 V18905ANG <0.136 µg/m3 0.136 1.80 Ethyl Acetate 1 05/18/22 16:54 V18905ANG 0.434 J µg/m3 0.106 2.17Ethylbenzene 1 05/18/22 16:54 V18905ANG <0.128 µg/m3 0.128 2.464-Ethyltoluene 1 05/18/22 16:54 V18905ANG <0.561 µg/m3 0.561 3.831,1,2-Trichloro-1,2,2-trifluoroethane 1 05/18/22 16:54 V18905ANG 0.381 J µg/m3 0.143 2.05Heptane 1 05/18/22 16:54 V18905ANG <0.330 µg/m3 0.330 5.33Hexachlorobutadiene 1 05/18/22 16:54 V18905ANG <0.0472 µg/m3 0.0472 1.76n-Hexane 1 05/18/22 16:54 V18905ANG <0.285 µg/m3 0.285 2.05 2-Hexanone 1 05/18/22 16:54 V18905ANG 1.53 J µg/m3 0.139 4.92Isopropyl Alchohol 1 05/18/22 16:54 V18905ANG 3.22 µg/m3 0.224 1.47Methyl Ethyl Ketone (MEK)1 05/18/22 16:54 V18905ANG <0.0336 µg/m3 0.0336 1.80Methyl tert-butyl ether (MTBE)1 05/18/22 16:54 V18905ANG <0.121 µg/m3 0.121 2.054-Methyl-2-Pentanone 1 05/18/22 16:54 V18905ANG 1.47 J µg/m3 0.489 1.74Methylene Chloride 1 05/18/22 16:54 V18905ANG 0.435 J µg/m3 0.183 2.62Naphthalene 1 05/18/22 16:54 V18905ANG Qualifiers/ Definitions Dilution FactorDFAnalyte detected in blankB Method Quantitation LimitMQLEstimated valueJ Page 12 of 31 , REPORT OF ANALYSISReport Number : Project Information : NC 28203 22-132-0016 01102 Hart & Hickman (Charlotte) 2923 South Tryon St. Ste 100 Charlotte Received : 05/12/2022 AVA-001 Report Date : 05/20/2022 Sample ID : Lab No : Sampled:SS-MP-DUP 89643 Matrix: 5/11/2022 0:00 Air Analytical Method: Prep Method: Test Results Units MDL MQL By Analytical Batch Date / Time Analyzed DF TO-15 Prep TO-15 Prep Batch(es):V18900 05/18/22 09:00 <0.242 µg/m3 0.242 0.861Propene 1 05/18/22 16:54 V18905ANG <0.124 µg/m3 0.124 2.13Styrene 1 05/18/22 16:54 V18905ANG <0.104 µg/m3 0.104 3.431,1,2,2-Tetrachloroethane 1 05/18/22 16:54 V18905ANG 2.16 J µg/m3 0.181 3.39Tetrachloroethene 1 05/18/22 16:54 V18905ANG 2.81 µg/m3 0.107 1.47Tetrahydrofuran 1 05/18/22 16:54 V18905ANG 1.57 J µg/m3 0.0901 1.88Toluene 1 05/18/22 16:54 V18905ANG <0.209 µg/m3 0.209 3.711,2,4-Trichlorobenzene 1 05/18/22 16:54 V18905ANG <0.144 µg/m3 0.144 2.731,1,1-Trichloroethane 1 05/18/22 16:54 V18905ANG <0.0877 µg/m3 0.0877 2.73 1,1,2-Trichloroethane 1 05/18/22 16:54 V18905ANG 0.580 J µg/m3 0.199 2.15Trichloroethene 1 05/18/22 16:54 V18905ANG 2.02 J µg/m3 0.130 2.81Trichlorofluoromethane 1 05/18/22 16:54 V18905ANG 1.08 J µg/m3 0.110 2.461,2,4-Trimethylbenzene 1 05/18/22 16:54 V18905ANG <0.236 µg/m3 0.236 2.461,3,5-Trimethylbenzene 1 05/18/22 16:54 V18905ANG <0.224 µg/m3 0.224 1.76Vinyl Acetate 1 05/18/22 16:54 V18905ANG <0.127 µg/m3 0.127 1.28Vinyl Chloride 1 05/18/22 16:54 V18905ANG 0.790 J µg/m3 0.157 2.17 o-Xylene 1 05/18/22 16:54 V18905ANG 1.74 J µg/m3 0.217 5.65m,p-Xylene 1 05/18/22 16:54 V18905ANG 2.53 J µg/m3 0.157 2.17Xylene (Total)1 05/18/22 16:54 V18905 Surrogate: 4-Bromofluorobenzene 85.5 Limits: 70-130%05/18/22 16:541 ANG V18905 Qualifiers/ Definitions Dilution FactorDFAnalyte detected in blankB Method Quantitation LimitMQLEstimated valueJ Page 13 of 31 , REPORT OF ANALYSISReport Number : Project Information : NC 28203 22-132-0016 01102 Hart & Hickman (Charlotte) 2923 South Tryon St. Ste 100 Charlotte Received : 05/12/2022 AVA-001 Report Date : 05/20/2022 Sample ID : Lab No : Sampled:SS-MP-12 89644 Matrix: 5/11/2022 13:00 Air Analytical Method: Prep Method: Test Results Units MDL MQL By Analytical Batch Date / Time Analyzed DF TO-15 Prep TO-15 Prep Batch(es):V18900 05/18/22 09:00 V18936 05/17/22 09:00 599 µg/m3 4.04 95.0Acetone 20 05/17/22 16:55 V18937ANG 0.537 J µg/m3 0.0733 1.60Benzene 1 05/18/22 17:45 V18905ANG <0.148 µg/m3 0.148 10.4Benzyl Chloride 1 05/18/22 17:45 V18905ANG <0.150 µg/m3 0.150 3.35Bromodichloromethane 1 05/18/22 17:45 V18905ANG <0.153 µg/m3 0.153 5.17Bromoform 1 05/18/22 17:45 V18905ANG <0.115 µg/m3 0.115 1.94Bromomethane 1 05/18/22 17:45 V18905ANG <0.328 µg/m3 0.328 1.111,3-Butadiene 1 05/18/22 17:45 V18905ANG <0.0608 µg/m3 0.0608 6.23Carbon Disulfide 1 05/18/22 17:45 V18905ANG <0.155 µg/m3 0.155 3.15 Carbon Tetrachloride 1 05/18/22 17:45 V18905ANG <0.107 µg/m3 0.107 2.30Chlorobenzene 1 05/18/22 17:45 V18905ANG <0.208 µg/m3 0.208 4.26Chlorodibromomethane 1 05/18/22 17:45 V18905ANG <0.164 µg/m3 0.164 1.32Chloroethane 1 05/18/22 17:45 V18905ANG 0.757 J µg/m3 0.0864 2.44Chloroform 1 05/18/22 17:45 V18905ANG 0.454 J µg/m3 0.0673 1.03Chloromethane 1 05/18/22 17:45 V18905ANG 1.81 J µg/m3 0.161 3.44Cyclohexane 1 05/18/22 17:45 V18905ANG <0.151 µg/m3 0.151 3.84 1,2-Dibromoethane 1 05/18/22 17:45 V18905ANG <0.0963 µg/m3 0.0963 3.011,2-Dichlorobenzene 1 05/18/22 17:45 V18905ANG 30.0 µg/m3 0.174 12.01,3-Dichlorobenzene 1 05/18/22 17:45 V18905ANG <0.186 µg/m3 0.186 3.011,4-Dichlorobenzene 1 05/18/22 17:45 V18905ANG 4.60 µg/m3 0.134 2.47Dichlorodifluoromethane 1 05/18/22 17:45 V18905ANG <0.101 µg/m3 0.101 2.021,1-Dichloroethane 1 05/18/22 17:45 V18905ANG <0.129 µg/m3 0.129 2.021,2-Dichloroethane 1 05/18/22 17:45 V18905ANG Qualifiers/ Definitions Dilution FactorDFAnalyte detected in blankB Method Quantitation LimitMQLEstimated valueJ Page 14 of 31 , REPORT OF ANALYSISReport Number : Project Information : NC 28203 22-132-0016 01102 Hart & Hickman (Charlotte) 2923 South Tryon St. Ste 100 Charlotte Received : 05/12/2022 AVA-001 Report Date : 05/20/2022 Sample ID : Lab No : Sampled:SS-MP-12 89644 Matrix: 5/11/2022 13:00 Air Analytical Method: Prep Method: Test Results Units MDL MQL By Analytical Batch Date / Time Analyzed DF TO-15 Prep TO-15 Prep Batch(es):V18900 05/18/22 09:00 V18936 05/17/22 09:00 <0.107 µg/m3 0.107 1.981,1-Dichloroethene 1 05/18/22 17:45 V18905ANG <0.0955 µg/m3 0.0955 1.98cis-1,2-Dichloroethene 1 05/18/22 17:45 V18905ANG <0.108 µg/m3 0.108 1.98trans-1,2-Dichloroethene 1 05/18/22 17:45 V18905ANG 1.10 J µg/m3 0.205 2.311,2-Dichloropropane 1 05/18/22 17:45 V18905ANG <0.623 µg/m3 0.623 3.501,2-Dichlorotetrafluoroethane 1 05/18/22 17:45 V18905ANG <0.178 µg/m3 0.178 2.27cis-1,3-Dichloropropene 1 05/18/22 17:45 V18905ANG <0.178 µg/m3 0.178 2.27trans-1,3-Dichloropropene 1 05/18/22 17:45 V18905ANG <0.435 µg/m3 0.435 1.801,4-Dioxane 1 05/18/22 17:45 V18905ANG 1.86 µg/m3 0.136 1.80 Ethyl Acetate 1 05/18/22 17:45 V18905ANG 0.382 J µg/m3 0.106 2.17Ethylbenzene 1 05/18/22 17:45 V18905ANG <0.128 µg/m3 0.128 2.464-Ethyltoluene 1 05/18/22 17:45 V18905ANG <0.561 µg/m3 0.561 3.831,1,2-Trichloro-1,2,2-trifluoroethane 1 05/18/22 17:45 V18905ANG 0.545 J µg/m3 0.143 2.05Heptane 1 05/18/22 17:45 V18905ANG <0.330 µg/m3 0.330 5.33Hexachlorobutadiene 1 05/18/22 17:45 V18905ANG <0.0472 µg/m3 0.0472 1.76n-Hexane 1 05/18/22 17:45 V18905ANG <0.285 µg/m3 0.285 2.05 2-Hexanone 1 05/18/22 17:45 V18905ANG 18.7 µg/m3 0.139 4.92Isopropyl Alchohol 1 05/18/22 17:45 V18905ANG 4.56 µg/m3 0.224 1.47Methyl Ethyl Ketone (MEK)1 05/18/22 17:45 V18905ANG <0.0336 µg/m3 0.0336 1.80Methyl tert-butyl ether (MTBE)1 05/18/22 17:45 V18905ANG <0.121 µg/m3 0.121 2.054-Methyl-2-Pentanone 1 05/18/22 17:45 V18905ANG 6.39 µg/m3 0.489 1.74Methylene Chloride 1 05/18/22 17:45 V18905ANG <0.183 µg/m3 0.183 2.62Naphthalene 1 05/18/22 17:45 V18905ANG Qualifiers/ Definitions Dilution FactorDFAnalyte detected in blankB Method Quantitation LimitMQLEstimated valueJ Page 15 of 31 , REPORT OF ANALYSISReport Number : Project Information : NC 28203 22-132-0016 01102 Hart & Hickman (Charlotte) 2923 South Tryon St. Ste 100 Charlotte Received : 05/12/2022 AVA-001 Report Date : 05/20/2022 Sample ID : Lab No : Sampled:SS-MP-12 89644 Matrix: 5/11/2022 13:00 Air Analytical Method: Prep Method: Test Results Units MDL MQL By Analytical Batch Date / Time Analyzed DF TO-15 Prep TO-15 Prep Batch(es):V18900 05/18/22 09:00 V18936 05/17/22 09:00 <0.242 µg/m3 0.242 0.861Propene 1 05/18/22 17:45 V18905ANG <0.124 µg/m3 0.124 2.13Styrene 1 05/18/22 17:45 V18905ANG <0.104 µg/m3 0.104 3.431,1,2,2-Tetrachloroethane 1 05/18/22 17:45 V18905ANG <0.181 µg/m3 0.181 3.39Tetrachloroethene 1 05/18/22 17:45 V18905ANG 3.19 µg/m3 0.107 1.47Tetrahydrofuran 1 05/18/22 17:45 V18905ANG 2.60 µg/m3 0.0901 1.88Toluene 1 05/18/22 17:45 V18905ANG <0.209 µg/m3 0.209 3.711,2,4-Trichlorobenzene 1 05/18/22 17:45 V18905ANG <0.144 µg/m3 0.144 2.731,1,1-Trichloroethane 1 05/18/22 17:45 V18905ANG <0.0877 µg/m3 0.0877 2.73 1,1,2-Trichloroethane 1 05/18/22 17:45 V18905ANG <0.199 µg/m3 0.199 2.15Trichloroethene 1 05/18/22 17:45 V18905ANG 5.05 µg/m3 0.130 2.81Trichlorofluoromethane 1 05/18/22 17:45 V18905ANG 0.767 J µg/m3 0.110 2.461,2,4-Trimethylbenzene 1 05/18/22 17:45 V18905ANG <0.236 µg/m3 0.236 2.461,3,5-Trimethylbenzene 1 05/18/22 17:45 V18905ANG <0.224 µg/m3 0.224 1.76Vinyl Acetate 1 05/18/22 17:45 V18905ANG <0.127 µg/m3 0.127 1.28Vinyl Chloride 1 05/18/22 17:45 V18905ANG 0.647 J µg/m3 0.157 2.17 o-Xylene 1 05/18/22 17:45 V18905ANG 1.61 J µg/m3 0.217 5.65m,p-Xylene 1 05/18/22 17:45 V18905ANG 2.26 J µg/m3 0.157 2.17Xylene (Total)1 05/18/22 17:45 V18905 Surrogate: 4-Bromofluorobenzene 86.3 Limits: 70-130%05/18/22 17:451 ANG V18905 Surrogate: 4-Bromofluorobenzene 88.5 Limits: 70-130%05/17/22 16:5520 ANG V18937 Qualifiers/ Definitions Dilution FactorDFAnalyte detected in blankB Method Quantitation LimitMQLEstimated valueJ Page 16 of 31 , REPORT OF ANALYSISReport Number : Project Information : NC 28203 22-132-0016 01102 Hart & Hickman (Charlotte) 2923 South Tryon St. Ste 100 Charlotte Received : 05/12/2022 AVA-001 Report Date : 05/20/2022 Sample ID : Lab No : Sampled:SS-MP-10 89645 Matrix: 5/11/2022 14:27 Air Analytical Method: Prep Method: Test Results Units MDL MQL By Analytical Batch Date / Time Analyzed DF TO-15 Prep TO-15 Prep Batch(es):V18900 05/18/22 09:00 V18936 05/17/22 09:00 <0.808 µg/m3 0.808 19.0Acetone 4 05/18/22 22:00 V18905ANG <0.293 µg/m3 0.293 6.39Benzene 4 05/18/22 22:00 V18905ANG <0.587 µg/m3 0.587 41.4Benzyl Chloride 4 05/18/22 22:00 V18905ANG <0.600 µg/m3 0.600 13.4Bromodichloromethane 4 05/18/22 22:00 V18905ANG <0.613 µg/m3 0.613 20.7Bromoform 4 05/18/22 22:00 V18905ANG <0.460 µg/m3 0.460 7.77Bromomethane 4 05/18/22 22:00 V18905ANG <1.31 µg/m3 1.31 4.421,3-Butadiene 4 05/18/22 22:00 V18905ANG <0.243 µg/m3 0.243 24.9Carbon Disulfide 4 05/18/22 22:00 V18905ANG <0.621 µg/m3 0.621 12.6 Carbon Tetrachloride 4 05/18/22 22:00 V18905ANG <0.428 µg/m3 0.428 9.21Chlorobenzene 4 05/18/22 22:00 V18905ANG <0.830 µg/m3 0.830 17.0Chlorodibromomethane 4 05/18/22 22:00 V18905ANG <0.656 µg/m3 0.656 5.28Chloroethane 4 05/18/22 22:00 V18905ANG <0.345 µg/m3 0.345 9.76Chloroform 4 05/18/22 22:00 V18905ANG 0.809 J µg/m3 0.269 4.13Chloromethane 4 05/18/22 22:00 V18905ANG <0.646 µg/m3 0.646 13.8Cyclohexane 4 05/18/22 22:00 V18905ANG <0.605 µg/m3 0.605 15.4 1,2-Dibromoethane 4 05/18/22 22:00 V18905ANG <0.384 µg/m3 0.384 12.01,2-Dichlorobenzene 4 05/18/22 22:00 V18905ANG 2.43 J µg/m3 0.697 48.21,3-Dichlorobenzene 4 05/18/22 22:00 V18905ANG <0.743 µg/m3 0.743 12.01,4-Dichlorobenzene 4 05/18/22 22:00 V18905ANG 3.14 J µg/m3 0.536 9.89Dichlorodifluoromethane 4 05/18/22 22:00 V18905ANG <0.404 µg/m3 0.404 8.091,1-Dichloroethane 4 05/18/22 22:00 V18905ANG <0.516 µg/m3 0.516 8.091,2-Dichloroethane 4 05/18/22 22:00 V18905ANG Qualifiers/ Definitions Dilution FactorDFAnalyte detected in blankB Method Quantitation LimitMQLEstimated valueJ Page 17 of 31 , REPORT OF ANALYSISReport Number : Project Information : NC 28203 22-132-0016 01102 Hart & Hickman (Charlotte) 2923 South Tryon St. Ste 100 Charlotte Received : 05/12/2022 AVA-001 Report Date : 05/20/2022 Sample ID : Lab No : Sampled:SS-MP-10 89645 Matrix: 5/11/2022 14:27 Air Analytical Method: Prep Method: Test Results Units MDL MQL By Analytical Batch Date / Time Analyzed DF TO-15 Prep TO-15 Prep Batch(es):V18900 05/18/22 09:00 V18936 05/17/22 09:00 <0.428 µg/m3 0.428 7.931,1-Dichloroethene 4 05/18/22 22:00 V18905ANG <0.382 µg/m3 0.382 7.93cis-1,2-Dichloroethene 4 05/18/22 22:00 V18905ANG <0.432 µg/m3 0.432 7.93trans-1,2-Dichloroethene 4 05/18/22 22:00 V18905ANG <0.820 µg/m3 0.820 9.241,2-Dichloropropane 4 05/18/22 22:00 V18905ANG <2.49 µg/m3 2.49 14.01,2-Dichlorotetrafluoroethane 4 05/18/22 22:00 V18905ANG <0.712 µg/m3 0.712 9.08cis-1,3-Dichloropropene 4 05/18/22 22:00 V18905ANG <0.712 µg/m3 0.712 9.08trans-1,3-Dichloropropene 4 05/18/22 22:00 V18905ANG <1.74 µg/m3 1.74 7.211,4-Dioxane 4 05/18/22 22:00 V18905ANG <0.544 µg/m3 0.544 7.21 Ethyl Acetate 4 05/18/22 22:00 V18905ANG <0.424 µg/m3 0.424 8.68Ethylbenzene 4 05/18/22 22:00 V18905ANG <0.512 µg/m3 0.512 9.834-Ethyltoluene 4 05/18/22 22:00 V18905ANG <2.24 µg/m3 2.24 15.31,1,2-Trichloro-1,2,2-trifluoroethane 4 05/18/22 22:00 V18905ANG <0.572 µg/m3 0.572 8.20Heptane 4 05/18/22 22:00 V18905ANG <1.32 µg/m3 1.32 21.3Hexachlorobutadiene 4 05/18/22 22:00 V18905ANG <0.189 µg/m3 0.189 7.05n-Hexane 4 05/18/22 22:00 V18905ANG <1.14 µg/m3 1.14 8.19 2-Hexanone 4 05/18/22 22:00 V18905ANG <0.557 µg/m3 0.557 19.7Isopropyl Alchohol 4 05/18/22 22:00 V18905ANG 189 µg/m3 0.896 5.90Methyl Ethyl Ketone (MEK)4 05/18/22 22:00 V18905ANG <0.134 µg/m3 0.134 7.21Methyl tert-butyl ether (MTBE)4 05/18/22 22:00 V18905ANG <0.484 µg/m3 0.484 8.194-Methyl-2-Pentanone 4 05/18/22 22:00 V18905ANG <1.95 µg/m3 1.95 6.95Methylene Chloride 4 05/18/22 22:00 V18905ANG <0.733 µg/m3 0.733 10.5Naphthalene 4 05/18/22 22:00 V18905ANG Qualifiers/ Definitions Dilution FactorDFAnalyte detected in blankB Method Quantitation LimitMQLEstimated valueJ Page 18 of 31 , REPORT OF ANALYSISReport Number : Project Information : NC 28203 22-132-0016 01102 Hart & Hickman (Charlotte) 2923 South Tryon St. Ste 100 Charlotte Received : 05/12/2022 AVA-001 Report Date : 05/20/2022 Sample ID : Lab No : Sampled:SS-MP-10 89645 Matrix: 5/11/2022 14:27 Air Analytical Method: Prep Method: Test Results Units MDL MQL By Analytical Batch Date / Time Analyzed DF TO-15 Prep TO-15 Prep Batch(es):V18900 05/18/22 09:00 V18936 05/17/22 09:00 <0.967 µg/m3 0.967 3.44Propene 4 05/18/22 22:00 V18905ANG <0.496 µg/m3 0.496 8.52Styrene 4 05/18/22 22:00 V18905ANG <0.415 µg/m3 0.415 13.71,1,2,2-Tetrachloroethane 4 05/18/22 22:00 V18905ANG <0.726 µg/m3 0.726 13.6Tetrachloroethene 4 05/18/22 22:00 V18905ANG 1410 µg/m3 2.14 29.5Tetrahydrofuran 20 05/17/22 17:34 V18937ANG 1.37 J µg/m3 0.361 7.54Toluene 4 05/18/22 22:00 V18905ANG <0.834 µg/m3 0.834 14.81,2,4-Trichlorobenzene 4 05/18/22 22:00 V18905ANG <0.575 µg/m3 0.575 10.91,1,1-Trichloroethane 4 05/18/22 22:00 V18905ANG <0.350 µg/m3 0.350 10.9 1,1,2-Trichloroethane 4 05/18/22 22:00 V18905ANG <0.796 µg/m3 0.796 8.60Trichloroethene 4 05/18/22 22:00 V18905ANG 2.29 J µg/m3 0.518 11.2Trichlorofluoromethane 4 05/18/22 22:00 V18905ANG <0.440 µg/m3 0.440 9.831,2,4-Trimethylbenzene 4 05/18/22 22:00 V18905ANG <0.944 µg/m3 0.944 9.831,3,5-Trimethylbenzene 4 05/18/22 22:00 V18905ANG <0.896 µg/m3 0.896 7.04Vinyl Acetate 4 05/18/22 22:00 V18905ANG <0.508 µg/m3 0.508 5.11Vinyl Chloride 4 05/18/22 22:00 V18905ANG <0.628 µg/m3 0.628 8.68 o-Xylene 4 05/18/22 22:00 V18905ANG <0.868 µg/m3 0.868 22.6m,p-Xylene 4 05/18/22 22:00 V18905ANG <0.628 µg/m3 0.628 8.68Xylene (Total)4 05/18/22 22:00 V18905 Surrogate: 4-Bromofluorobenzene 91.3 Limits: 70-130%05/17/22 17:3420 ANG V18937 Surrogate: 4-Bromofluorobenzene 88.3 Limits: 70-130%05/18/22 22:004 ANG V18905 Qualifiers/ Definitions Dilution FactorDFAnalyte detected in blankB Method Quantitation LimitMQLEstimated valueJ Page 19 of 31 , REPORT OF ANALYSISReport Number : Project Information : NC 28203 22-132-0016 01102 Hart & Hickman (Charlotte) 2923 South Tryon St. Ste 100 Charlotte Received : 05/12/2022 AVA-001 Report Date : 05/20/2022 Sample ID : Lab No : Sampled:SS-MP-9 89646 Matrix: 5/11/2022 14:57 Air Analytical Method: Prep Method: Test Results Units MDL MQL By Analytical Batch Date / Time Analyzed DF TO-15 Prep TO-15 Prep Batch(es):V18900 05/18/22 09:00 7.73 µg/m3 0.202 4.75Acetone 1 05/18/22 18:39 V18905ANG 0.709 J µg/m3 0.0733 1.60Benzene 1 05/18/22 18:39 V18905ANG <0.148 µg/m3 0.148 10.4Benzyl Chloride 1 05/18/22 18:39 V18905ANG <0.150 µg/m3 0.150 3.35Bromodichloromethane 1 05/18/22 18:39 V18905ANG <0.153 µg/m3 0.153 5.17Bromoform 1 05/18/22 18:39 V18905ANG <0.115 µg/m3 0.115 1.94Bromomethane 1 05/18/22 18:39 V18905ANG <0.328 µg/m3 0.328 1.111,3-Butadiene 1 05/18/22 18:39 V18905ANG 0.972 JB µg/m3 0.0608 6.23Carbon Disulfide 1 05/18/22 18:39 V18905ANG <0.155 µg/m3 0.155 3.15 Carbon Tetrachloride 1 05/18/22 18:39 V18905ANG <0.107 µg/m3 0.107 2.30Chlorobenzene 1 05/18/22 18:39 V18905ANG <0.208 µg/m3 0.208 4.26Chlorodibromomethane 1 05/18/22 18:39 V18905ANG <0.164 µg/m3 0.164 1.32Chloroethane 1 05/18/22 18:39 V18905ANG <0.0864 µg/m3 0.0864 2.44Chloroform 1 05/18/22 18:39 V18905ANG <0.0673 µg/m3 0.0673 1.03Chloromethane 1 05/18/22 18:39 V18905ANG 1.98 J µg/m3 0.161 3.44Cyclohexane 1 05/18/22 18:39 V18905ANG <0.151 µg/m3 0.151 3.84 1,2-Dibromoethane 1 05/18/22 18:39 V18905ANG <0.0963 µg/m3 0.0963 3.011,2-Dichlorobenzene 1 05/18/22 18:39 V18905ANG 0.619 J µg/m3 0.174 12.01,3-Dichlorobenzene 1 05/18/22 18:39 V18905ANG <0.186 µg/m3 0.186 3.011,4-Dichlorobenzene 1 05/18/22 18:39 V18905ANG 2.90 µg/m3 0.134 2.47Dichlorodifluoromethane 1 05/18/22 18:39 V18905ANG <0.101 µg/m3 0.101 2.021,1-Dichloroethane 1 05/18/22 18:39 V18905ANG <0.129 µg/m3 0.129 2.021,2-Dichloroethane 1 05/18/22 18:39 V18905ANG Qualifiers/ Definitions Dilution FactorDFAnalyte detected in blankB Method Quantitation LimitMQLEstimated valueJ Page 20 of 31 , REPORT OF ANALYSISReport Number : Project Information : NC 28203 22-132-0016 01102 Hart & Hickman (Charlotte) 2923 South Tryon St. Ste 100 Charlotte Received : 05/12/2022 AVA-001 Report Date : 05/20/2022 Sample ID : Lab No : Sampled:SS-MP-9 89646 Matrix: 5/11/2022 14:57 Air Analytical Method: Prep Method: Test Results Units MDL MQL By Analytical Batch Date / Time Analyzed DF TO-15 Prep TO-15 Prep Batch(es):V18900 05/18/22 09:00 <0.107 µg/m3 0.107 1.981,1-Dichloroethene 1 05/18/22 18:39 V18905ANG <0.0955 µg/m3 0.0955 1.98cis-1,2-Dichloroethene 1 05/18/22 18:39 V18905ANG <0.108 µg/m3 0.108 1.98trans-1,2-Dichloroethene 1 05/18/22 18:39 V18905ANG <0.205 µg/m3 0.205 2.311,2-Dichloropropane 1 05/18/22 18:39 V18905ANG <0.623 µg/m3 0.623 3.501,2-Dichlorotetrafluoroethane 1 05/18/22 18:39 V18905ANG <0.178 µg/m3 0.178 2.27cis-1,3-Dichloropropene 1 05/18/22 18:39 V18905ANG <0.178 µg/m3 0.178 2.27trans-1,3-Dichloropropene 1 05/18/22 18:39 V18905ANG <0.435 µg/m3 0.435 1.801,4-Dioxane 1 05/18/22 18:39 V18905ANG <0.136 µg/m3 0.136 1.80 Ethyl Acetate 1 05/18/22 18:39 V18905ANG <0.106 µg/m3 0.106 2.17Ethylbenzene 1 05/18/22 18:39 V18905ANG <0.128 µg/m3 0.128 2.464-Ethyltoluene 1 05/18/22 18:39 V18905ANG <0.561 µg/m3 0.561 3.831,1,2-Trichloro-1,2,2-trifluoroethane 1 05/18/22 18:39 V18905ANG <0.143 µg/m3 0.143 2.05Heptane 1 05/18/22 18:39 V18905ANG <0.330 µg/m3 0.330 5.33Hexachlorobutadiene 1 05/18/22 18:39 V18905ANG <0.0472 µg/m3 0.0472 1.76n-Hexane 1 05/18/22 18:39 V18905ANG <0.285 µg/m3 0.285 2.05 2-Hexanone 1 05/18/22 18:39 V18905ANG 2.31 J µg/m3 0.139 4.92Isopropyl Alchohol 1 05/18/22 18:39 V18905ANG 1.40 J µg/m3 0.224 1.47Methyl Ethyl Ketone (MEK)1 05/18/22 18:39 V18905ANG <0.0336 µg/m3 0.0336 1.80Methyl tert-butyl ether (MTBE)1 05/18/22 18:39 V18905ANG <0.121 µg/m3 0.121 2.054-Methyl-2-Pentanone 1 05/18/22 18:39 V18905ANG 0.955 J µg/m3 0.489 1.74Methylene Chloride 1 05/18/22 18:39 V18905ANG <0.183 µg/m3 0.183 2.62Naphthalene 1 05/18/22 18:39 V18905ANG Qualifiers/ Definitions Dilution FactorDFAnalyte detected in blankB Method Quantitation LimitMQLEstimated valueJ Page 21 of 31 , REPORT OF ANALYSISReport Number : Project Information : NC 28203 22-132-0016 01102 Hart & Hickman (Charlotte) 2923 South Tryon St. Ste 100 Charlotte Received : 05/12/2022 AVA-001 Report Date : 05/20/2022 Sample ID : Lab No : Sampled:SS-MP-9 89646 Matrix: 5/11/2022 14:57 Air Analytical Method: Prep Method: Test Results Units MDL MQL By Analytical Batch Date / Time Analyzed DF TO-15 Prep TO-15 Prep Batch(es):V18900 05/18/22 09:00 <0.242 µg/m3 0.242 0.861Propene 1 05/18/22 18:39 V18905ANG <0.124 µg/m3 0.124 2.13Styrene 1 05/18/22 18:39 V18905ANG <0.104 µg/m3 0.104 3.431,1,2,2-Tetrachloroethane 1 05/18/22 18:39 V18905ANG 0.814 J µg/m3 0.181 3.39Tetrachloroethene 1 05/18/22 18:39 V18905ANG 2.79 µg/m3 0.107 1.47Tetrahydrofuran 1 05/18/22 18:39 V18905ANG 0.746 J µg/m3 0.0901 1.88Toluene 1 05/18/22 18:39 V18905ANG <0.209 µg/m3 0.209 3.711,2,4-Trichlorobenzene 1 05/18/22 18:39 V18905ANG <0.144 µg/m3 0.144 2.731,1,1-Trichloroethane 1 05/18/22 18:39 V18905ANG <0.0877 µg/m3 0.0877 2.73 1,1,2-Trichloroethane 1 05/18/22 18:39 V18905ANG <0.199 µg/m3 0.199 2.15Trichloroethene 1 05/18/22 18:39 V18905ANG 1.96 J µg/m3 0.130 2.81Trichlorofluoromethane 1 05/18/22 18:39 V18905ANG 0.516 J µg/m3 0.110 2.461,2,4-Trimethylbenzene 1 05/18/22 18:39 V18905ANG <0.236 µg/m3 0.236 2.461,3,5-Trimethylbenzene 1 05/18/22 18:39 V18905ANG <0.224 µg/m3 0.224 1.76Vinyl Acetate 1 05/18/22 18:39 V18905ANG <0.127 µg/m3 0.127 1.28Vinyl Chloride 1 05/18/22 18:39 V18905ANG 0.412 J µg/m3 0.157 2.17 o-Xylene 1 05/18/22 18:39 V18905ANG 0.899 J µg/m3 0.217 5.65m,p-Xylene 1 05/18/22 18:39 V18905ANG 1.31 J µg/m3 0.157 2.17Xylene (Total)1 05/18/22 18:39 V18905 Surrogate: 4-Bromofluorobenzene 85.5 Limits: 70-130%05/18/22 18:391 ANG V18905 Qualifiers/ Definitions Dilution FactorDFAnalyte detected in blankB Method Quantitation LimitMQLEstimated valueJ Page 22 of 31 Quality Control Data 22-132-0016Report No: Project Description: Client ID:Hart & Hickman (Charlotte) AVA-001 QC Prep Batch Method: Volatile Organic Compounds in Air- GC/MS TO-15 V18905QC Analytical Batch(es): Analysis Method: Analysis Description: TO-15 Prep QC Prep:V18900 Associated Lab Samples: 89642, 89643, 89644, 89645, 89646 LRB-V18900 Matrix: AIRLab Reagent Blank Parameter AnalyzedMQLMDLBlank ResultUnits % Recovery % Rec Limits 05/18/22 14:364.750.202<0.202µg/m3Acetone 05/18/22 14:361.600.0733<0.0733µg/m3Benzene 05/18/22 14:3610.40.148<0.148µg/m3Benzyl Chloride 05/18/22 14:363.350.150<0.150µg/m3Bromodichloromethane 05/18/22 14:365.170.153<0.153µg/m3Bromoform 05/18/22 14:361.940.115<0.115µg/m3Bromomethane 05/18/22 14:361.110.328<0.328µg/m31,3-Butadiene 05/18/22 14:366.230.06080.448µg/m3Carbon Disulfide 05/18/22 14:363.150.155<0.155µg/m3Carbon Tetrachloride 05/18/22 14:362.300.107<0.107µg/m3Chlorobenzene 05/18/22 14:364.260.208<0.208µg/m3Chlorodibromomethane 05/18/22 14:361.320.164<0.164µg/m3Chloroethane 05/18/22 14:362.440.0864<0.0864µg/m3Chloroform 05/18/22 14:361.030.0673<0.0673µg/m3Chloromethane 05/18/22 14:363.440.161<0.161µg/m3Cyclohexane 05/18/22 14:363.840.151<0.151µg/m31,2-Dibromoethane 05/18/22 14:363.010.0963<0.0963µg/m31,2-Dichlorobenzene 05/18/22 14:3612.00.174<0.174µg/m31,3-Dichlorobenzene 05/18/22 14:363.010.186<0.186µg/m31,4-Dichlorobenzene 05/18/22 14:362.470.134<0.134µg/m3Dichlorodifluoromethane 05/18/22 14:362.020.101<0.101µg/m31,1-Dichloroethane 05/18/22 14:362.020.129<0.129µg/m31,2-Dichloroethane 05/18/22 14:361.980.107<0.107µg/m31,1-Dichloroethene 05/18/22 14:361.980.0955<0.0955µg/m3cis-1,2-Dichloroethene 05/18/22 14:361.980.108<0.108µg/m3trans-1,2-Dichloroethene 05/18/22 14:362.310.205<0.205µg/m31,2-Dichloropropane 05/18/22 14:363.500.623<0.623µg/m31,2-Dichlorotetrafluoroethane Page 1 of 6Date:05/20/2022 10:57 AM Page 23 of 31 Quality Control Data 22-132-0016Report No: Project Description: Client ID:Hart & Hickman (Charlotte) AVA-001 QC Prep Batch Method: Volatile Organic Compounds in Air- GC/MS TO-15 V18905QC Analytical Batch(es): Analysis Method: Analysis Description: TO-15 Prep QC Prep:V18900 Associated Lab Samples: 89642, 89643, 89644, 89645, 89646 LRB-V18900 Matrix: AIRLab Reagent Blank Parameter AnalyzedMQLMDLBlank ResultUnits % Recovery % Rec Limits 05/18/22 14:362.270.178<0.178µg/m3cis-1,3-Dichloropropene 05/18/22 14:362.270.178<0.178µg/m3trans-1,3-Dichloropropene 05/18/22 14:361.800.435<0.435µg/m31,4-Dioxane 05/18/22 14:361.800.136<0.136µg/m3Ethyl Acetate 05/18/22 14:362.170.106<0.106µg/m3Ethylbenzene 05/18/22 14:362.460.128<0.128µg/m34-Ethyltoluene 05/18/22 14:363.830.561<0.561µg/m31,1,2-Trichloro-1,2,2-trifluoroethane 05/18/22 14:362.050.143<0.143µg/m3Heptane 05/18/22 14:365.330.330<0.330µg/m3Hexachlorobutadiene 05/18/22 14:361.760.0472<0.0472µg/m3n-Hexane 05/18/22 14:362.050.285<0.285µg/m32-Hexanone 05/18/22 14:364.920.139<0.139µg/m3Isopropyl Alchohol 05/18/22 14:361.470.224<0.224µg/m3Methyl Ethyl Ketone (MEK) 05/18/22 14:361.800.0336<0.0336µg/m3Methyl tert-butyl ether (MTBE) 05/18/22 14:362.050.121<0.121µg/m34-Methyl-2-Pentanone 05/18/22 14:361.740.489<0.489µg/m3Methylene Chloride 05/18/22 14:362.620.183<0.183µg/m3Naphthalene 05/18/22 14:360.8610.242<0.242µg/m3Propene 05/18/22 14:362.130.124<0.124µg/m3Styrene 05/18/22 14:363.430.104<0.104µg/m31,1,2,2-Tetrachloroethane 05/18/22 14:363.390.181<0.181µg/m3Tetrachloroethene 05/18/22 14:361.470.107<0.107µg/m3Tetrahydrofuran 05/18/22 14:361.880.0901<0.0901µg/m3Toluene 05/18/22 14:363.710.209<0.209µg/m31,2,4-Trichlorobenzene 05/18/22 14:362.730.144<0.144µg/m31,1,1-Trichloroethane 05/18/22 14:362.730.0877<0.0877µg/m31,1,2-Trichloroethane 05/18/22 14:362.150.199<0.199µg/m3Trichloroethene Page 2 of 6Date:05/20/2022 10:57 AM Page 24 of 31 Quality Control Data 22-132-0016Report No: Project Description: Client ID:Hart & Hickman (Charlotte) AVA-001 QC Prep Batch Method: Volatile Organic Compounds in Air- GC/MS TO-15 V18905QC Analytical Batch(es): Analysis Method: Analysis Description: TO-15 Prep QC Prep:V18900 Associated Lab Samples: 89642, 89643, 89644, 89645, 89646 LRB-V18900 Matrix: AIRLab Reagent Blank Parameter AnalyzedMQLMDLBlank ResultUnits % Recovery % Rec Limits 05/18/22 14:362.810.130<0.130µg/m3Trichlorofluoromethane 05/18/22 14:362.460.110<0.110µg/m31,2,4-Trimethylbenzene 05/18/22 14:362.460.236<0.236µg/m31,3,5-Trimethylbenzene 05/18/22 14:361.760.224<0.224µg/m3Vinyl Acetate 05/18/22 14:361.280.127<0.127µg/m3Vinyl Chloride 05/18/22 14:362.170.157<0.157µg/m3o-Xylene 05/18/22 14:365.650.217<0.217µg/m3m,p-Xylene 05/18/22 14:364-Bromofluorobenzene (S)84.6 70-130 LCS-V18900Laboratory Control Sample Parameter LCS %RecLCS Result Spike Conc.Units % Rec Limits 10812.811.9µg/m3Acetone 70-130 10116.216.0µg/m3Benzene 70-130 88.823.025.9µg/m3Benzyl Chloride 70-130 10836.133.5µg/m3Bromodichloromethane 70-130 78.740.751.7µg/m3Bromoform 70-130 11021.419.4µg/m3Bromomethane 70-130 97.210.811.1µg/m31,3-Butadiene 70-130 11317.715.6µg/m3Carbon Disulfide 70-130 95.530.131.5µg/m3Carbon Tetrachloride 70-130 94.721.823.0µg/m3Chlorobenzene 70-130 88.037.542.6µg/m3Chlorodibromomethane 70-130 10413.713.2µg/m3Chloroethane 70-130 10425.424.4µg/m3Chloroform 70-130 10610.910.3µg/m3Chloromethane 70-130 74.412.817.2µg/m3Cyclohexane 70-130 Page 3 of 6Date:05/20/2022 10:57 AM Page 25 of 31 Quality Control Data 22-132-0016Report No: Project Description: Client ID:Hart & Hickman (Charlotte) AVA-001 QC Prep Batch Method: Volatile Organic Compounds in Air- GC/MS TO-15 V18905QC Analytical Batch(es): Analysis Method: Analysis Description: TO-15 Prep QC Prep:V18900 LCS-V18900Laboratory Control Sample Parameter LCS %RecLCS Result Spike Conc.Units % Rec Limits 95.536.738.4µg/m31,2-Dibromoethane 70-130 92.027.730.1µg/m31,2-Dichlorobenzene 70-130 90.627.330.1µg/m31,3-Dichlorobenzene 70-130 88.026.530.1µg/m31,4-Dichlorobenzene 70-130 11528.424.7µg/m3Dichlorodifluoromethane 70-130 11222.620.2µg/m31,1-Dichloroethane 70-130 11423.020.2µg/m31,2-Dichloroethane 70-130 11823.319.8µg/m31,1-Dichloroethene 70-130 11422.619.8µg/m3cis-1,2-Dichloroethene 70-130 11422.619.8µg/m3trans-1,2-Dichloroethene 70-130 10624.623.1µg/m31,2-Dichloropropane 70-130 11138.835.0µg/m31,2-Dichlorotetrafluoroethane 70-130 10523.922.7µg/m3cis-1,3-Dichloropropene 70-130 10523.922.7µg/m3trans-1,3-Dichloropropene 70-130 92.216.618.0µg/m31,4-Dioxane 70-130 10919.618.0µg/m3Ethyl Acetate 70-130 93.020.221.7µg/m3Ethylbenzene 70-130 96.323.724.6µg/m34-Ethyltoluene 70-130 11142.438.3µg/m31,1,2-Trichloro-1,2,2-trifluoroethane 70-130 10221.020.5µg/m3Heptane 70-130 92.449.353.3µg/m3Hexachlorobutadiene 70-130 10518.517.6µg/m3n-Hexane 70-130 90.218.520.5µg/m32-Hexanone 70-130 90.211.112.3µg/m3Isopropyl Alchohol 70-130 10515.614.8µg/m3Methyl Ethyl Ketone (MEK)70-130 10518.918.0µg/m3Methyl tert-butyl ether (MTBE)70-130 10120.820.5µg/m34-Methyl-2-Pentanone 70-130 Page 4 of 6Date:05/20/2022 10:57 AM Page 26 of 31 Quality Control Data 22-132-0016Report No: Project Description: Client ID:Hart & Hickman (Charlotte) AVA-001 QC Prep Batch Method: Volatile Organic Compounds in Air- GC/MS TO-15 V18905QC Analytical Batch(es): Analysis Method: Analysis Description: TO-15 Prep QC Prep:V18900 LCS-V18900Laboratory Control Sample Parameter LCS %RecLCS Result Spike Conc.Units % Rec Limits 10217.717.4µg/m3Methylene Chloride 70-130 99.626.126.2µg/m3Naphthalene 70-130 1018.718.61µg/m3Propene 70-130 92.419.721.3µg/m3Styrene 70-130 94.732.534.3µg/m31,1,2,2-Tetrachloroethane 70-130 93.231.633.9µg/m3Tetrachloroethene 70-130 98.614.514.7µg/m3Tetrahydrofuran 70-130 10119.018.8µg/m3Toluene 70-130 91.934.137.1µg/m31,2,4-Trichlorobenzene 70-130 10328.027.3µg/m31,1,1-Trichloroethane 70-130 91.925.127.3µg/m31,1,2-Trichloroethane 70-130 10227.526.9µg/m3Trichloroethene 70-130 12234.228.1µg/m3Trichlorofluoromethane 70-130 92.222.724.6µg/m31,2,4-Trimethylbenzene 70-130 91.422.524.6µg/m31,3,5-Trimethylbenzene 70-130 92.616.317.6µg/m3Vinyl Acetate 70-130 10413.312.8µg/m3Vinyl Chloride 70-130 95.820.821.7µg/m3o-Xylene 70-130 93.740.743.4µg/m3m,p-Xylene 70-130 88.84-Bromofluorobenzene (S)70-130 Page 5 of 6Date:05/20/2022 10:57 AM Page 27 of 31 Quality Control Data 22-132-0016Report No: Project Description: Client ID:Hart & Hickman (Charlotte) AVA-001 QC Prep Batch Method: Volatile Organic Compounds in Air- GC/MS TO-15 V18937QC Analytical Batch(es): Analysis Method: Analysis Description: TO-15 Prep QC Prep:V18936 Associated Lab Samples: 89644, 89645 LRB-V18936 Matrix: AIRLab Reagent Blank Parameter AnalyzedMQLMDLBlank ResultUnits % Recovery % Rec Limits 05/17/22 12:284.750.202<0.202µg/m3Acetone 05/17/22 12:281.470.107<0.107µg/m3Tetrahydrofuran 05/17/22 12:284-Bromofluorobenzene (S)96.0 70-130 LCS-V18936Laboratory Control Sample Parameter LCS %RecLCS Result Spike Conc.Units % Rec Limits 94.111.211.9µg/m3Acetone 70-130 10114.914.7µg/m3Tetrahydrofuran 70-130 98.64-Bromofluorobenzene (S)70-130 Page 6 of 6Date:05/20/2022 10:57 AM Page 28 of 31 Fed Ex UPS US Postal Client Lab Courier Other : Shipment Receipt Form Customer Number: Customer Name: Report Number:22-132-0016 Hart & Hickman (Charlotte) 01102 Shipping Method Shipping container/cooler uncompromised? Thermometer ID:NA Chain of Custody (COC) present?Yes No Yes No Not Present Yes No Not Present Yes No COC agrees with sample label(s)? Yes No COC properly completed Samples in proper containers? Sample containers intact? Sufficient sample volume for indicated test(s)? All samples received within holding time? Cooler temperature in compliance? Yes No Yes No Yes No Yes No Yes No Yes NoCooler/Samples arrived at the laboratory on ice. Samples were considered acceptable as cooling process had begun. Yes No Yes No N/A Yes No N/A Yes No N/ASoil VOA method 5035 – compliance criteria met Water - Sample containers properly preserved Water - VOA vials free of headspace Yes No N/A Trip Blanks received with VOAs Low concentration EnCore samplers (48 hr) High concentration pre-weighed (methanol -14 d) Low conc pre-weighed vials (Sod Bis -14 d) High concentration container (48 hr) Custody seals intact on shipping container/cooler? Custody seals intact on sample bottles? Number of coolers/boxes received Yes No 1 Signature:Angela D Overcash Date & Time:05/12/2022 16:20:28 Special precautions or instructions included? Comments: Page 29 of 31 Page 30 of 31 Page 31 of 31 Laboratory's liability in any claim relating to analyses performed shall be limited to, at laboratory's option, repeating the analysis in question at laboratory's expense, or the refund of the charges paid for performance of said analysis. 7/1/2022 Hart & Hickman (Charlotte) Alexis McKenzie 2923 South Tryon St. Ste 100 Charlotte, NC, 28203 Ref: Analytical Testing Revised Lab Report Number: 22-132-9020 (Original Report 22-132-0020) Client Project Description: AVA-001 Dear Alexis McKenzie: Waypoint Analytical, LLC (Charlotte) received sample(s) on 5/12/2022 for the analyses presented in the following report. The above referenced project has been analyzed per your instructions. The analyses were performed in accordance with the applicable analytical method. The analytical data has been validated using standard quality control measures performed as required by the analytical method. Quality Assurance, method validations, instrumentation maintenance and calibration for all parameters were performed in accordance with guidelines established by the USEPA (including 40 CFR 136 Method Update Rule May 2021) unless otherwise indicated. Certain parameters (chlorine, pH, dissolved oxygen, sulfite...) are required to be analyzed within 15 minutes of sampling. Usually, but not always, any field parameter analyzed at the laboratory is outside of this holding time. Refer to sample analysis time for confirmation of holding time compliance. The results are shown on the attached Report of Analysis(s). Results for solid matrices are reported on an as-received basis unless otherwise indicated. This report shall not be reproduced except in full and relates only to the samples included in this report. Please do not hesitate to contact me or client services if you have any questions or need additional information. Sincerely, Angela D Overcash Senior Project Manager Page 1 of 24 Certification Summary Laboratory ID: WP CNC: Waypoint Analytical Carolina, Inc. (C), Charlotte, NC State Program Lab ID Expiration Date 07/31/202237735State ProgramNorth Carolina 12/31/2022402State ProgramNorth Carolina 07/31/202299012State ProgramSouth Carolina 12/31/202299012State ProgramSouth Carolina Page 1 of 1 00016/22-132-9020 Page 2 of 24 Report Number: Sample Summary Table Client Project Description: 22-132-9020 AVA-001 Lab No Client Sample ID Matrix Date Collected Date Received 05/11/2022 12:25Air 89658 IA-B-1 05/12/2022 12:15 05/11/2022Air 89659 IA-B-Dup 05/12/2022 12:15 05/11/2022 12:30Air 89660 IA-B-3 05/12/2022 12:15 05/11/2022 12:30Air 89661 IA-B-2 05/12/2022 12:15 05/11/2022 12:25Air 89662 IA-BKG 05/12/2022 12:15 Page 3 of 24 Summary of Detected Analytes QualifiersAnalyzedUnitsResult Report Number: Client Sample ID Method Parameters Lab Sample ID 22-132-9020 Report Limit Project:AVA-001 V 89658IA-B-1 561 05/26/2022 20:44TO-15 Acetone µg/m3 2.02 J0.418 05/26/2022 00:40TO-15 Benzene µg/m3 0.0733 J0.624 05/26/2022 00:40TO-15 Chloromethane µg/m3 0.0673 2.49 05/26/2022 00:40TO-15 Dichlorodifluoromethane µg/m3 0.134 7.25 05/26/2022 00:40TO-15 Ethyl Acetate µg/m3 0.136 J0.360 05/26/2022 00:40TO-15 Ethylbenzene µg/m3 0.106 J0.656 05/26/2022 00:40TO-15 Heptane µg/m3 0.143 61.1 05/26/2022 00:40TO-15 Isopropyl Alchohol µg/m3 0.139 3.37 05/26/2022 00:40TO-15 Methyl Ethyl Ketone (MEK)µg/m3 0.224 J1.23 05/26/2022 00:40TO-15 Methylene Chloride µg/m3 0.489 JB1.30 05/26/2022 00:40TO-15 Tetrachloroethene µg/m3 0.181 J0.655 05/26/2022 00:40TO-15 Tetrahydrofuran µg/m3 0.107 J1.51 05/26/2022 00:40TO-15 Toluene µg/m3 0.0901 J1.78 05/26/2022 00:40TO-15 Trichlorofluoromethane µg/m3 0.130 J0.595 05/26/2022 00:40TO-15 o-Xylene µg/m3 0.157 J1.14 05/26/2022 00:40TO-15 m,p-Xylene µg/m3 0.217 V 89659IA-B-Dup 567 05/26/2022 21:24TO-15 Acetone µg/m3 2.02 J0.412 05/26/2022 01:29TO-15 Benzene µg/m3 0.0733 J0.578 05/26/2022 01:29TO-15 Chloromethane µg/m3 0.0673 2.64 05/26/2022 01:29TO-15 Dichlorodifluoromethane µg/m3 0.134 7.00 05/26/2022 01:29TO-15 Ethyl Acetate µg/m3 0.136 J0.738 05/26/2022 01:29TO-15 Heptane µg/m3 0.143 62.3 05/26/2022 01:29TO-15 Isopropyl Alchohol µg/m3 0.139 3.24 05/26/2022 01:29TO-15 Methyl Ethyl Ketone (MEK)µg/m3 0.224 J1.41 05/26/2022 01:29TO-15 Methylene Chloride µg/m3 0.489 JB2.09 05/26/2022 01:29TO-15 Tetrachloroethene µg/m3 0.181 J0.640 05/26/2022 01:29TO-15 Tetrahydrofuran µg/m3 0.107 J1.45 05/26/2022 01:29TO-15 Toluene µg/m3 0.0901 J2.17 05/26/2022 01:29TO-15 Trichlorofluoromethane µg/m3 0.130 J0.556 05/26/2022 01:29TO-15 o-Xylene µg/m3 0.157 J1.01 05/26/2022 01:29TO-15 m,p-Xylene µg/m3 0.217 V 89660IA-B-3 4970 05/26/2022 22:04TO-15 Acetone µg/m3 10.1 J0.576 05/26/2022 02:20TO-15 Chloroform µg/m3 0.0864 J0.482 05/26/2022 02:20TO-15 Cyclohexane µg/m3 0.161 Page 4 of 24 Summary of Detected Analytes QualifiersAnalyzedUnitsResult Report Number: Client Sample ID Method Parameters Lab Sample ID 22-132-9020 Report Limit Project:AVA-001 V 89660IA-B-3 2.49 05/26/2022 02:20TO-15 Dichlorodifluoromethane µg/m3 0.134 53.7 05/26/2022 02:20TO-15 Ethyl Acetate µg/m3 0.136 J0.482 05/26/2022 02:20TO-15 Ethylbenzene µg/m3 0.106 J0.959 05/26/2022 02:20TO-15 Heptane µg/m3 0.143 1060 05/26/2022 22:04TO-15 Isopropyl Alchohol µg/m3 6.96 4.08 05/26/2022 02:20TO-15 Methyl Ethyl Ketone (MEK)µg/m3 0.224 7.56 05/26/2022 02:20TO-15 Toluene µg/m3 0.0901 J1.11 05/26/2022 02:20TO-15 o-Xylene µg/m3 0.157 J1.85 05/26/2022 02:20TO-15 m,p-Xylene µg/m3 0.217 V 89661IA-B-2 5000 05/26/2022 22:43TO-15 Acetone µg/m3 10.1 J0.418 05/26/2022 03:11TO-15 Benzene µg/m3 0.0733 J0.615 05/26/2022 03:11TO-15 Chloroform µg/m3 0.0864 J0.613 05/26/2022 03:11TO-15 Chloromethane µg/m3 0.0673 2.50 05/26/2022 03:11TO-15 Dichlorodifluoromethane µg/m3 0.134 52.4 05/26/2022 03:11TO-15 Ethyl Acetate µg/m3 0.136 J0.608 05/26/2022 03:11TO-15 Ethylbenzene µg/m3 0.106 J1.23 05/26/2022 03:11TO-15 Heptane µg/m3 0.143 770 05/26/2022 22:43TO-15 Isopropyl Alchohol µg/m3 6.96 5.62 05/26/2022 03:11TO-15 Toluene µg/m3 0.0901 J1.37 05/26/2022 03:11TO-15 o-Xylene µg/m3 0.157 J2.07 05/26/2022 03:11TO-15 m,p-Xylene µg/m3 0.217 V 89662IA-BKG 7.72 05/26/2022 04:01TO-15 Acetone µg/m3 0.202 J0.332 05/26/2022 04:01TO-15 Benzene µg/m3 0.0733 J0.604 05/26/2022 04:01TO-15 Carbon Disulfide µg/m3 0.0608 J0.574 05/26/2022 04:01TO-15 Chloromethane µg/m3 0.0673 J2.40 05/26/2022 04:01TO-15 Dichlorodifluoromethane µg/m3 0.134 J3.54 05/26/2022 04:01TO-15 Isopropyl Alchohol µg/m3 0.139 J0.979 05/26/2022 04:01TO-15 Methyl Ethyl Ketone (MEK)µg/m3 0.224 J0.868 05/26/2022 04:01TO-15 Methylene Chloride µg/m3 0.489 93.6 05/26/2022 04:01TO-15 Tetrachloroethene µg/m3 0.181 J0.923 05/26/2022 04:01TO-15 Toluene µg/m3 0.0901 J1.34 05/26/2022 04:01TO-15 Trichloroethene µg/m3 0.199 J1.37 05/26/2022 04:01TO-15 Trichlorofluoromethane µg/m3 0.130 Page 5 of 24 Summary of Detected Analytes QualifiersAnalyzedUnitsResult Report Number: Client Sample ID Method Parameters Lab Sample ID 22-132-9020 Report Limit Project:AVA-001 V 89662IA-BKG J0.703 05/26/2022 04:01TO-15 m,p-Xylene µg/m3 0.217 Page 6 of 24 Client: Hart & Hickman (Charlotte) CASE NARRATIVE Project: AVA-001 Lab Report Number: 22-132-9020 Date: 7/1/2022 This is a revised report and supersedes the revised report dated 6/22/22. Chloroethane was removed from sample IA-B-1 and cis-1,2-Dichloroethane and 1,2-dichloropropane was removed from samples IA-B-Dup, IA-B-3, IA-B-2, and IA-BKG. Page 7 of 24 , REPORT OF ANALYSISReport Number : Project Information : NC 28203 22-132-9020 01102 Hart & Hickman (Charlotte) 2923 South Tryon St. Ste 100 Alexis McKenzie Charlotte Received : 05/12/2022 AVA-001 Revised Report Date : 07/01/2022 Original Report Date : 06/22/2022 Sample ID : Lab No : Sampled:IA-B-1 89658 Matrix: 5/11/2022 12:25 Air Analytical Method: Prep Method: Test Results Units MDL MQL By Analytical Batch Date / Time Analyzed DF TO-15 Prep TO-15 Prep Batch(es):V20141 05/25/22 09:00 V20272 05/26/22 09:00 561 µg/m3 2.02 47.5Acetone 10 05/26/22 20:44 V20306ENM 0.418 J µg/m3 0.0733 1.60Benzene 1 05/26/22 00:40 V20209ENM <0.0608 µg/m3 0.0608 6.23Carbon Disulfide 1 05/26/22 00:40 V20209ENM <0.0864 µg/m3 0.0864 2.44Chloroform 1 05/26/22 00:40 V20209ENM 0.624 J µg/m3 0.0673 1.03Chloromethane 1 05/26/22 00:40 V20209ENM <0.161 µg/m3 0.161 3.44Cyclohexane 1 05/26/22 00:40 V20209ENM <0.174 µg/m3 0.174 12.01,3-Dichlorobenzene 1 05/26/22 00:40 V20209ENM 2.49 µg/m3 0.134 2.47Dichlorodifluoromethane 1 05/26/22 00:40 V20209ENM 7.25 µg/m3 0.136 1.80 Ethyl Acetate 1 05/26/22 00:40 V20209ENM 0.360 J µg/m3 0.106 2.17Ethylbenzene 1 05/26/22 00:40 V20209ENM 0.656 J µg/m3 0.143 2.05Heptane 1 05/26/22 00:40 V20209ENM 61.1 µg/m3 0.139 4.92Isopropyl Alchohol 1 05/26/22 00:40 V20209ENM 3.37 µg/m3 0.224 1.47Methyl Ethyl Ketone (MEK)1 05/26/22 00:40 V20209ENM 1.23 J µg/m3 0.489 1.74Methylene Chloride 1 05/26/22 00:40 V20209ENM <0.183 µg/m3 0.183 2.62Naphthalene 1 05/26/22 00:40 V20209ENM 1.30 JB µg/m3 0.181 3.39 Tetrachloroethene 1 05/26/22 00:40 V20209ENM 0.655 J µg/m3 0.107 1.47Tetrahydrofuran 1 05/26/22 00:40 V20209ENM 1.51 J µg/m3 0.0901 1.88Toluene 1 05/26/22 00:40 V20209ENM <0.199 µg/m3 0.199 2.15Trichloroethene 1 05/26/22 00:40 V20209ENM 1.78 J µg/m3 0.130 2.81Trichlorofluoromethane 1 05/26/22 00:40 V20209ENM <0.110 µg/m3 0.110 2.461,2,4-Trimethylbenzene 1 05/26/22 00:40 V20209ENM 0.595 J µg/m3 0.157 2.17o-Xylene 1 05/26/22 00:40 V20209ENM Qualifiers/ Definitions Dilution FactorDFAnalyte detected in blankB Method Quantitation LimitMQLEstimated valueJ Page 8 of 24 , REPORT OF ANALYSISReport Number : Project Information : NC 28203 22-132-9020 01102 Hart & Hickman (Charlotte) 2923 South Tryon St. Ste 100 Alexis McKenzie Charlotte Received : 05/12/2022 AVA-001 Revised Report Date : 07/01/2022 Original Report Date : 06/22/2022 Sample ID : Lab No : Sampled:IA-B-1 89658 Matrix: 5/11/2022 12:25 Air Analytical Method: Prep Method: Test Results Units MDL MQL By Analytical Batch Date / Time Analyzed DF TO-15 Prep TO-15 Prep Batch(es):V20141 05/25/22 09:00 V20272 05/26/22 09:00 1.14 J µg/m3 0.217 5.65m,p-Xylene 1 05/26/22 00:40 V20209ENM Surrogate: 4-Bromofluorobenzene 99.2 Limits: 70-130%05/26/22 00:401 ENM V20209 Surrogate: 4-Bromofluorobenzene 95.5 Limits: 70-130%05/26/22 20:4410 ENM V20306 Qualifiers/ Definitions Dilution FactorDFAnalyte detected in blankB Method Quantitation LimitMQLEstimated valueJ Page 9 of 24 , REPORT OF ANALYSISReport Number : Project Information : NC 28203 22-132-9020 01102 Hart & Hickman (Charlotte) 2923 South Tryon St. Ste 100 Alexis McKenzie Charlotte Received : 05/12/2022 AVA-001 Revised Report Date : 07/01/2022 Original Report Date : 06/22/2022 Sample ID : Lab No : Sampled:IA-B-Dup 89659 Matrix: 5/11/2022 0:00 Air Analytical Method: Prep Method: Test Results Units MDL MQL By Analytical Batch Date / Time Analyzed DF TO-15 Prep TO-15 Prep Batch(es):V20141 05/25/22 09:00 V20272 05/26/22 09:00 567 µg/m3 2.02 47.5Acetone 10 05/26/22 21:24 V20306ENM 0.412 J µg/m3 0.0733 1.60Benzene 1 05/26/22 01:29 V20209ENM <0.0608 µg/m3 0.0608 6.23Carbon Disulfide 1 05/26/22 01:29 V20209ENM <0.0864 µg/m3 0.0864 2.44Chloroform 1 05/26/22 01:29 V20209ENM 0.578 J µg/m3 0.0673 1.03Chloromethane 1 05/26/22 01:29 V20209ENM <0.161 µg/m3 0.161 3.44Cyclohexane 1 05/26/22 01:29 V20209ENM <0.174 µg/m3 0.174 12.01,3-Dichlorobenzene 1 05/26/22 01:29 V20209ENM 2.64 µg/m3 0.134 2.47Dichlorodifluoromethane 1 05/26/22 01:29 V20209ENM 7.00 µg/m3 0.136 1.80 Ethyl Acetate 1 05/26/22 01:29 V20209ENM <0.106 µg/m3 0.106 2.17Ethylbenzene 1 05/26/22 01:29 V20209ENM 0.738 J µg/m3 0.143 2.05Heptane 1 05/26/22 01:29 V20209ENM 62.3 µg/m3 0.139 4.92Isopropyl Alchohol 1 05/26/22 01:29 V20209ENM 3.24 µg/m3 0.224 1.47Methyl Ethyl Ketone (MEK)1 05/26/22 01:29 V20209ENM 1.41 J µg/m3 0.489 1.74Methylene Chloride 1 05/26/22 01:29 V20209ENM <0.183 µg/m3 0.183 2.62Naphthalene 1 05/26/22 01:29 V20209ENM 2.09 JB µg/m3 0.181 3.39 Tetrachloroethene 1 05/26/22 01:29 V20209ENM 0.640 J µg/m3 0.107 1.47Tetrahydrofuran 1 05/26/22 01:29 V20209ENM 1.45 J µg/m3 0.0901 1.88Toluene 1 05/26/22 01:29 V20209ENM <0.199 µg/m3 0.199 2.15Trichloroethene 1 05/26/22 01:29 V20209ENM 2.17 J µg/m3 0.130 2.81Trichlorofluoromethane 1 05/26/22 01:29 V20209ENM <0.110 µg/m3 0.110 2.461,2,4-Trimethylbenzene 1 05/26/22 01:29 V20209ENM 0.556 J µg/m3 0.157 2.17o-Xylene 1 05/26/22 01:29 V20209ENM Qualifiers/ Definitions Dilution FactorDFAnalyte detected in blankB Method Quantitation LimitMQLEstimated valueJ Page 10 of 24 , REPORT OF ANALYSISReport Number : Project Information : NC 28203 22-132-9020 01102 Hart & Hickman (Charlotte) 2923 South Tryon St. Ste 100 Alexis McKenzie Charlotte Received : 05/12/2022 AVA-001 Revised Report Date : 07/01/2022 Original Report Date : 06/22/2022 Sample ID : Lab No : Sampled:IA-B-Dup 89659 Matrix: 5/11/2022 0:00 Air Analytical Method: Prep Method: Test Results Units MDL MQL By Analytical Batch Date / Time Analyzed DF TO-15 Prep TO-15 Prep Batch(es):V20141 05/25/22 09:00 V20272 05/26/22 09:00 1.01 J µg/m3 0.217 5.65m,p-Xylene 1 05/26/22 01:29 V20209ENM Surrogate: 4-Bromofluorobenzene 99.7 Limits: 70-130%05/26/22 01:291 ENM V20209 Surrogate: 4-Bromofluorobenzene 92.7 Limits: 70-130%05/26/22 21:2410 ENM V20306 Qualifiers/ Definitions Dilution FactorDFAnalyte detected in blankB Method Quantitation LimitMQLEstimated valueJ Page 11 of 24 , REPORT OF ANALYSISReport Number : Project Information : NC 28203 22-132-9020 01102 Hart & Hickman (Charlotte) 2923 South Tryon St. Ste 100 Alexis McKenzie Charlotte Received : 05/12/2022 AVA-001 Revised Report Date : 07/01/2022 Original Report Date : 06/22/2022 Sample ID : Lab No : Sampled:IA-B-3 89660 Matrix: 5/11/2022 12:30 Air Analytical Method: Prep Method: Test Results Units MDL MQL By Analytical Batch Date / Time Analyzed DF TO-15 Prep TO-15 Prep Batch(es):V20141 05/25/22 09:00 V20272 05/26/22 09:00 4970 µg/m3 10.1 238Acetone 50 05/26/22 22:04 V20306ENM <0.0733 µg/m3 0.0733 1.60Benzene 1 05/26/22 02:20 V20209ENM <0.0608 µg/m3 0.0608 6.23Carbon Disulfide 1 05/26/22 02:20 V20209ENM 0.576 J µg/m3 0.0864 2.44Chloroform 1 05/26/22 02:20 V20209ENM <0.0673 µg/m3 0.0673 1.03Chloromethane 1 05/26/22 02:20 V20209ENM 0.482 J µg/m3 0.161 3.44Cyclohexane 1 05/26/22 02:20 V20209ENM <0.174 µg/m3 0.174 12.01,3-Dichlorobenzene 1 05/26/22 02:20 V20209ENM 2.49 µg/m3 0.134 2.47Dichlorodifluoromethane 1 05/26/22 02:20 V20209ENM 53.7 µg/m3 0.136 1.80 Ethyl Acetate 1 05/26/22 02:20 V20209ENM 0.482 J µg/m3 0.106 2.17Ethylbenzene 1 05/26/22 02:20 V20209ENM 0.959 J µg/m3 0.143 2.05Heptane 1 05/26/22 02:20 V20209ENM 1060 µg/m3 6.96 246Isopropyl Alchohol 50 05/26/22 22:04 V20306ENM 4.08 µg/m3 0.224 1.47Methyl Ethyl Ketone (MEK)1 05/26/22 02:20 V20209ENM <0.489 µg/m3 0.489 1.74Methylene Chloride 1 05/26/22 02:20 V20209ENM <0.183 µg/m3 0.183 2.62Naphthalene 1 05/26/22 02:20 V20209ENM <0.181 µg/m3 0.181 3.39 Tetrachloroethene 1 05/26/22 02:20 V20209ENM <0.107 µg/m3 0.107 1.47Tetrahydrofuran 1 05/26/22 02:20 V20209ENM 7.56 µg/m3 0.0901 1.88Toluene 1 05/26/22 02:20 V20209ENM <0.199 µg/m3 0.199 2.15Trichloroethene 1 05/26/22 02:20 V20209ENM <0.130 µg/m3 0.130 2.81Trichlorofluoromethane 1 05/26/22 02:20 V20209ENM <0.110 µg/m3 0.110 2.461,2,4-Trimethylbenzene 1 05/26/22 02:20 V20209ENM 1.11 J µg/m3 0.157 2.17o-Xylene 1 05/26/22 02:20 V20209ENM Qualifiers/ Definitions Dilution FactorDFAnalyte detected in blankB Method Quantitation LimitMQLEstimated valueJ Page 12 of 24 , REPORT OF ANALYSISReport Number : Project Information : NC 28203 22-132-9020 01102 Hart & Hickman (Charlotte) 2923 South Tryon St. Ste 100 Alexis McKenzie Charlotte Received : 05/12/2022 AVA-001 Revised Report Date : 07/01/2022 Original Report Date : 06/22/2022 Sample ID : Lab No : Sampled:IA-B-3 89660 Matrix: 5/11/2022 12:30 Air Analytical Method: Prep Method: Test Results Units MDL MQL By Analytical Batch Date / Time Analyzed DF TO-15 Prep TO-15 Prep Batch(es):V20141 05/25/22 09:00 V20272 05/26/22 09:00 1.85 J µg/m3 0.217 5.65m,p-Xylene 1 05/26/22 02:20 V20209ENM Surrogate: 4-Bromofluorobenzene 96.4 Limits: 70-130%05/26/22 02:201 ENM V20209 Surrogate: 4-Bromofluorobenzene 92.2 Limits: 70-130%05/26/22 22:0450 ENM V20306 Qualifiers/ Definitions Dilution FactorDFAnalyte detected in blankB Method Quantitation LimitMQLEstimated valueJ Page 13 of 24 , REPORT OF ANALYSISReport Number : Project Information : NC 28203 22-132-9020 01102 Hart & Hickman (Charlotte) 2923 South Tryon St. Ste 100 Alexis McKenzie Charlotte Received : 05/12/2022 AVA-001 Revised Report Date : 07/01/2022 Original Report Date : 06/22/2022 Sample ID : Lab No : Sampled:IA-B-2 89661 Matrix: 5/11/2022 12:30 Air Analytical Method: Prep Method: Test Results Units MDL MQL By Analytical Batch Date / Time Analyzed DF TO-15 Prep TO-15 Prep Batch(es):V20141 05/25/22 09:00 V20272 05/26/22 09:00 5000 µg/m3 10.1 238Acetone 50 05/26/22 22:43 V20306ENM 0.418 J µg/m3 0.0733 1.60Benzene 1 05/26/22 03:11 V20209ENM <0.0608 µg/m3 0.0608 6.23Carbon Disulfide 1 05/26/22 03:11 V20209ENM 0.615 J µg/m3 0.0864 2.44Chloroform 1 05/26/22 03:11 V20209ENM 0.613 J µg/m3 0.0673 1.03Chloromethane 1 05/26/22 03:11 V20209ENM <0.161 µg/m3 0.161 3.44Cyclohexane 1 05/26/22 03:11 V20209ENM <0.174 µg/m3 0.174 12.01,3-Dichlorobenzene 1 05/26/22 03:11 V20209ENM 2.50 µg/m3 0.134 2.47Dichlorodifluoromethane 1 05/26/22 03:11 V20209ENM 52.4 µg/m3 0.136 1.80 Ethyl Acetate 1 05/26/22 03:11 V20209ENM 0.608 J µg/m3 0.106 2.17Ethylbenzene 1 05/26/22 03:11 V20209ENM 1.23 J µg/m3 0.143 2.05Heptane 1 05/26/22 03:11 V20209ENM 770 µg/m3 6.96 246Isopropyl Alchohol 50 05/26/22 22:43 V20306ENM <0.224 µg/m3 0.224 1.47Methyl Ethyl Ketone (MEK)1 05/26/22 03:11 V20209ENM <0.489 µg/m3 0.489 1.74Methylene Chloride 1 05/26/22 03:11 V20209ENM <0.183 µg/m3 0.183 2.62Naphthalene 1 05/26/22 03:11 V20209ENM <0.181 µg/m3 0.181 3.39 Tetrachloroethene 1 05/26/22 03:11 V20209ENM <0.107 µg/m3 0.107 1.47Tetrahydrofuran 1 05/26/22 03:11 V20209ENM 5.62 µg/m3 0.0901 1.88Toluene 1 05/26/22 03:11 V20209ENM <0.199 µg/m3 0.199 2.15Trichloroethene 1 05/26/22 03:11 V20209ENM <0.130 µg/m3 0.130 2.81Trichlorofluoromethane 1 05/26/22 03:11 V20209ENM <0.110 µg/m3 0.110 2.461,2,4-Trimethylbenzene 1 05/26/22 03:11 V20209ENM 1.37 J µg/m3 0.157 2.17o-Xylene 1 05/26/22 03:11 V20209ENM Qualifiers/ Definitions Dilution FactorDFAnalyte detected in blankB Method Quantitation LimitMQLEstimated valueJ Page 14 of 24 , REPORT OF ANALYSISReport Number : Project Information : NC 28203 22-132-9020 01102 Hart & Hickman (Charlotte) 2923 South Tryon St. Ste 100 Alexis McKenzie Charlotte Received : 05/12/2022 AVA-001 Revised Report Date : 07/01/2022 Original Report Date : 06/22/2022 Sample ID : Lab No : Sampled:IA-B-2 89661 Matrix: 5/11/2022 12:30 Air Analytical Method: Prep Method: Test Results Units MDL MQL By Analytical Batch Date / Time Analyzed DF TO-15 Prep TO-15 Prep Batch(es):V20141 05/25/22 09:00 V20272 05/26/22 09:00 2.07 J µg/m3 0.217 5.65m,p-Xylene 1 05/26/22 03:11 V20209ENM Surrogate: 4-Bromofluorobenzene 99.2 Limits: 70-130%05/26/22 03:111 ENM V20209 Surrogate: 4-Bromofluorobenzene 94.4 Limits: 70-130%05/26/22 22:4350 ENM V20306 Qualifiers/ Definitions Dilution FactorDFAnalyte detected in blankB Method Quantitation LimitMQLEstimated valueJ Page 15 of 24 , REPORT OF ANALYSISReport Number : Project Information : NC 28203 22-132-9020 01102 Hart & Hickman (Charlotte) 2923 South Tryon St. Ste 100 Alexis McKenzie Charlotte Received : 05/12/2022 AVA-001 Revised Report Date : 07/01/2022 Original Report Date : 06/22/2022 Sample ID : Lab No : Sampled:IA-BKG 89662 Matrix: 5/11/2022 12:25 Air Analytical Method: Prep Method: Test Results Units MDL MQL By Analytical Batch Date / Time Analyzed DF TO-15 Prep TO-15 Prep Batch(es):V20141 05/25/22 09:00 7.72 µg/m3 0.202 4.75Acetone 1 05/26/22 04:01 V20209ENM 0.332 J µg/m3 0.0733 1.60Benzene 1 05/26/22 04:01 V20209ENM 0.604 J µg/m3 0.0608 6.23Carbon Disulfide 1 05/26/22 04:01 V20209ENM <0.0864 µg/m3 0.0864 2.44Chloroform 1 05/26/22 04:01 V20209ENM 0.574 J µg/m3 0.0673 1.03Chloromethane 1 05/26/22 04:01 V20209ENM <0.161 µg/m3 0.161 3.44Cyclohexane 1 05/26/22 04:01 V20209ENM <0.174 µg/m3 0.174 12.01,3-Dichlorobenzene 1 05/26/22 04:01 V20209ENM 2.40 J µg/m3 0.134 2.47Dichlorodifluoromethane 1 05/26/22 04:01 V20209ENM <0.136 µg/m3 0.136 1.80 Ethyl Acetate 1 05/26/22 04:01 V20209ENM <0.106 µg/m3 0.106 2.17Ethylbenzene 1 05/26/22 04:01 V20209ENM <0.143 µg/m3 0.143 2.05Heptane 1 05/26/22 04:01 V20209ENM 3.54 J µg/m3 0.139 4.92Isopropyl Alchohol 1 05/26/22 04:01 V20209ENM 0.979 J µg/m3 0.224 1.47Methyl Ethyl Ketone (MEK)1 05/26/22 04:01 V20209ENM 0.868 J µg/m3 0.489 1.74Methylene Chloride 1 05/26/22 04:01 V20209ENM <0.183 µg/m3 0.183 2.62Naphthalene 1 05/26/22 04:01 V20209ENM 93.6 µg/m3 0.181 3.39 Tetrachloroethene 1 05/26/22 04:01 V20209ENM <0.107 µg/m3 0.107 1.47Tetrahydrofuran 1 05/26/22 04:01 V20209ENM 0.923 J µg/m3 0.0901 1.88Toluene 1 05/26/22 04:01 V20209ENM 1.34 J µg/m3 0.199 2.15Trichloroethene 1 05/26/22 04:01 V20209ENM 1.37 J µg/m3 0.130 2.81Trichlorofluoromethane 1 05/26/22 04:01 V20209ENM <0.110 µg/m3 0.110 2.461,2,4-Trimethylbenzene 1 05/26/22 04:01 V20209ENM <0.157 µg/m3 0.157 2.17o-Xylene 1 05/26/22 04:01 V20209ENM Qualifiers/ Definitions Dilution FactorDFAnalyte detected in blankB Method Quantitation LimitMQLEstimated valueJ Page 16 of 24 , REPORT OF ANALYSISReport Number : Project Information : NC 28203 22-132-9020 01102 Hart & Hickman (Charlotte) 2923 South Tryon St. Ste 100 Alexis McKenzie Charlotte Received : 05/12/2022 AVA-001 Revised Report Date : 07/01/2022 Original Report Date : 06/22/2022 Sample ID : Lab No : Sampled:IA-BKG 89662 Matrix: 5/11/2022 12:25 Air Analytical Method: Prep Method: Test Results Units MDL MQL By Analytical Batch Date / Time Analyzed DF TO-15 Prep TO-15 Prep Batch(es):V20141 05/25/22 09:00 0.703 J µg/m3 0.217 5.65m,p-Xylene 1 05/26/22 04:01 V20209ENM Surrogate: 4-Bromofluorobenzene 96.9 Limits: 70-130%05/26/22 04:011 ENM V20209 Qualifiers/ Definitions Dilution FactorDFAnalyte detected in blankB Method Quantitation LimitMQLEstimated valueJ Page 17 of 24 Quality Control Data 22-132-9020Report No: Project Description: Client ID:Hart & Hickman (Charlotte) AVA-001 QC Prep Batch Method: Volatile Organic Compounds in Air- GC/MS TO-15 V20209QC Analytical Batch(es): Analysis Method: Analysis Description: TO-15 Prep QC Prep:V20141 Associated Lab Samples: 89658, 89659, 89660, 89661, 89662 LRB-V20141 Matrix: AIRLab Reagent Blank Parameter AnalyzedMQLMDLBlank ResultUnits % Recovery % Rec Limits 05/25/22 12:144.750.2020.314µg/m3Acetone 05/25/22 12:141.600.0733<0.0733µg/m3Benzene 05/25/22 12:146.230.0608<0.0608µg/m3Carbon Disulfide 05/25/22 12:141.320.164<0.164µg/m3Chloroethane 05/25/22 12:142.440.0864<0.0864µg/m3Chloroform 05/25/22 12:141.030.0673<0.0673µg/m3Chloromethane 05/25/22 12:143.440.161<0.161µg/m3Cyclohexane 05/25/22 12:1412.00.174<0.174µg/m31,3-Dichlorobenzene 05/25/22 12:142.470.134<0.134µg/m3Dichlorodifluoromethane 05/25/22 12:141.980.0955<0.0955µg/m3cis-1,2-Dichloroethene 05/25/22 12:142.310.205<0.205µg/m31,2-Dichloropropane 05/25/22 12:141.800.136<0.136µg/m3Ethyl Acetate 05/25/22 12:142.170.106<0.106µg/m3Ethylbenzene 05/25/22 12:142.050.143<0.143µg/m3Heptane 05/25/22 12:141.760.0472<0.0472µg/m3n-Hexane 05/25/22 12:142.050.285<0.285µg/m32-Hexanone 05/25/22 12:144.920.139<0.139µg/m3Isopropyl Alchohol 05/25/22 12:141.470.224<0.224µg/m3Methyl Ethyl Ketone (MEK) 05/25/22 12:141.740.489<0.489µg/m3Methylene Chloride 05/25/22 12:142.620.183<0.183µg/m3Naphthalene 05/25/22 12:143.390.1810.685µg/m3Tetrachloroethene 05/25/22 12:141.470.107<0.107µg/m3Tetrahydrofuran 05/25/22 12:141.880.0901<0.0901µg/m3Toluene 05/25/22 12:142.150.199<0.199µg/m3Trichloroethene 05/25/22 12:142.810.130<0.130µg/m3Trichlorofluoromethane 05/25/22 12:142.460.110<0.110µg/m31,2,4-Trimethylbenzene 05/25/22 12:142.170.157<0.157µg/m3o-Xylene Page 1 of 4Date:07/01/2022 11:11 AM Page 18 of 24 Quality Control Data 22-132-9020Report No: Project Description: Client ID:Hart & Hickman (Charlotte) AVA-001 QC Prep Batch Method: Volatile Organic Compounds in Air- GC/MS TO-15 V20209QC Analytical Batch(es): Analysis Method: Analysis Description: TO-15 Prep QC Prep:V20141 Associated Lab Samples: 89658, 89659, 89660, 89661, 89662 LRB-V20141 Matrix: AIRLab Reagent Blank Parameter AnalyzedMQLMDLBlank ResultUnits % Recovery % Rec Limits 05/25/22 12:145.650.217<0.217µg/m3m,p-Xylene 05/25/22 12:144-Bromofluorobenzene (S)96.9 70-130 LCS-V20141Laboratory Control Sample Parameter LCS %RecLCS Result Spike Conc.Units % Rec Limits 89.910.711.9µg/m3Acetone 70-130 10516.816.0µg/m3Benzene 70-130 10816.815.6µg/m3Carbon Disulfide 70-130 97.712.913.2µg/m3Chloroethane 70-130 10224.924.4µg/m3Chloroform 70-130 10110.410.3µg/m3Chloromethane 70-130 77.913.417.2µg/m3Cyclohexane 70-130 10431.330.1µg/m31,3-Dichlorobenzene 70-130 97.924.224.7µg/m3Dichlorodifluoromethane 70-130 10520.819.8µg/m3cis-1,2-Dichloroethene 70-130 10223.623.1µg/m31,2-Dichloropropane 70-130 10218.318.0µg/m3Ethyl Acetate 70-130 11023.921.7µg/m3Ethylbenzene 70-130 10721.920.5µg/m3Heptane 70-130 10017.617.6µg/m3n-Hexane 70-130 97.520.020.5µg/m32-Hexanone 70-130 99.112.212.3µg/m3Isopropyl Alchohol 70-130 95.914.214.8µg/m3Methyl Ethyl Ketone (MEK)70-130 90.815.817.4µg/m3Methylene Chloride 70-130 11530.126.2µg/m3Naphthalene 70-130 10736.233.9µg/m3Tetrachloroethene 70-130 Page 2 of 4Date:07/01/2022 11:11 AM Page 19 of 24 Quality Control Data 22-132-9020Report No: Project Description: Client ID:Hart & Hickman (Charlotte) AVA-001 QC Prep Batch Method: Volatile Organic Compounds in Air- GC/MS TO-15 V20209QC Analytical Batch(es): Analysis Method: Analysis Description: TO-15 Prep QC Prep:V20141 LCS-V20141Laboratory Control Sample Parameter LCS %RecLCS Result Spike Conc.Units % Rec Limits 97.914.414.7µg/m3Tetrahydrofuran 70-130 10820.318.8µg/m3Toluene 70-130 10227.426.9µg/m3Trichloroethene 70-130 99.227.928.1µg/m3Trichlorofluoromethane 70-130 10726.424.6µg/m31,2,4-Trimethylbenzene 70-130 12927.921.7µg/m3o-Xylene 70-130 11148.143.4µg/m3m,p-Xylene 70-130 1034-Bromofluorobenzene (S)70-130 Page 3 of 4Date:07/01/2022 11:11 AM Page 20 of 24 Quality Control Data 22-132-9020Report No: Project Description: Client ID:Hart & Hickman (Charlotte) AVA-001 QC Prep Batch Method: Volatile Organic Compounds in Air- GC/MS TO-15 V20306QC Analytical Batch(es): Analysis Method: Analysis Description: TO-15 Prep QC Prep:V20272 Associated Lab Samples: 89658, 89659, 89660, 89661 LRB-V20272 Matrix: AIRLab Reagent Blank Parameter AnalyzedMQLMDLBlank ResultUnits % Recovery % Rec Limits 05/26/22 11:014.750.2020.233µg/m3Acetone 05/26/22 11:014.920.139<0.139µg/m3Isopropyl Alchohol 05/26/22 11:014-Bromofluorobenzene (S)94.9 70-130 LCS-V20272Laboratory Control Sample Parameter LCS %RecLCS Result Spike Conc.Units % Rec Limits 97.411.611.9µg/m3Acetone 70-130 10412.812.3µg/m3Isopropyl Alchohol 70-130 99.14-Bromofluorobenzene (S)70-130 Page 4 of 4Date:07/01/2022 11:11 AM Page 21 of 24 Fed Ex UPS US Postal Client Lab Courier Other : Shipment Receipt Form Customer Number: Customer Name: Report Number:22-132-0020 Hart & Hickman (Charlotte) 01102 Shipping Method Shipping container/cooler uncompromised? Thermometer ID:NA Chain of Custody (COC) present?Yes No Yes No Not Present Yes No Not Present Yes No COC agrees with sample label(s)? Yes No COC properly completed Samples in proper containers? Sample containers intact? Sufficient sample volume for indicated test(s)? All samples received within holding time? Cooler temperature in compliance? Yes No Yes No Yes No Yes No Yes No Yes NoCooler/Samples arrived at the laboratory on ice. Samples were considered acceptable as cooling process had begun. Yes No Yes No N/A Yes No N/A Yes No N/ASoil VOA method 5035 – compliance criteria met Water - Sample containers properly preserved Water - VOA vials free of headspace Yes No N/A Trip Blanks received with VOAs Low concentration EnCore samplers (48 hr) High concentration pre-weighed (methanol -14 d) Low conc pre-weighed vials (Sod Bis -14 d) High concentration container (48 hr) Custody seals intact on shipping container/cooler? Custody seals intact on sample bottles? Number of coolers/boxes received Yes No 1 Signature:Angela D Overcash Date & Time:05/12/2022 16:37:09 Special precautions or instructions included? Comments: Page 22 of 24 Page 23 of 24 Page 24 of 24 Appendix E DEQ Risk Calculator Summary Pages Version Date: Basis: Site Name: Site Address: DEQ Section: Site ID: Exposure Unit ID: Submittal Date: Reviewed By: Prepared By:Hart & Hickman, PC SS-MP-1 North Carolina Department of Environmental Quality Risk Calculator Dunavant Street Charlotte, NC DWM Brownfields Program 19038-15-060 July 2022 May 2022 EPA RSL Table North Carolina DEQ Risk Calculator Complete Exposure Pathways Version Date: July 2022 Basis: May 2022 EPA RSL Table Site ID: 19038-15-060 Exposure Unit ID: SS-MP-1 Note: Risk output will only be calculated for complete exposure pathways. Receptor Pathway Check box if pathway complete Soil Groundwater Use Soil Groundwater Use Construction Worker Soil Soil Surface Water Groundwater to Indoor Air Soil Gas to Indoor Air Indoor Air Groundwater to Indoor Air Soil Gas to Indoor Air Indoor Air Source Soil Source Groundwater Source Soil Source Groundwater Input Form 1A VAPOR INTRUSION PATHWAYS DIRECT CONTACT SOIL AND WATER PATHWAYS Resident Non-Residential Worker Recreator/Trespasser Resident Non-Residential Worker CONTAMINANT MIGRATION PATHWAYS Groundwater Surface Water North Carolina DEQ Risk Calculator Exposure Point Concentrations Version Date: July 2022 Basis: May 2022 EPA RSL Table Site ID: 19038-15-060 Exposure Unit ID: SS-MP-1 Description of Exposure Point Concentration Selection: Exposure Point Concentration (ug/m3) Notes:CAS Number Chemical Minimum Concentration (Qualifier) Maximum Concentration (Qualifier) Units Location of Maximum Concentration Detection Frequency Range of Detection Limits Concentration Used for Screening Background Value Screening Toxicity Value (Screening Level) (n/c) Potential ARAR/TBC Value Potential ARAR/TBC Source COPC Flag (Y/N) Rationale for Selection or Deletion 9.56 67-64-1 Acetone ug/m3 0.955 71-43-2 Benzene ug/m3 1.17 75-15-0 Carbon Disulfide ug/m3 1.26 67-66-3 Chloroform ug/m3 3.51 75-71-8 Dichlorodifluoromethane ug/m3 1.57 107-06-2 Dichloroethane, 1,2-ug/m3 0.86 75-00-3 Ethyl Chloride (Chloroethane)ug/m3 2.38 100-41-4 Ethylbenzene ug/m3 52.9 109-99-9 ~Tetrahydrofuran ug/m3 1 142-82-5 Heptane, N-ug/m3 0.659 110-54-3 Hexane, N-ug/m3 4.62 67-63-0 Isopropanol ug/m3 1.97 78-93-3 Methyl Ethyl Ketone (2-Butanone)ug/m3 1.01 75-09-2 Methylene Chloride ug/m3 4.1 91-20-3 ~Naphthalene ug/m3 0.583 127-18-4 Tetrachloroethylene ug/m3 5.29 108-88-3 Toluene ug/m3 2.05 75-69-4 Trichlorofluoromethane ug/m3 3.59 95-63-6 Trimethylbenzene, 1,2,4-ug/m3 0.782 108-67-8 Trimethylbenzene, 1,3,5-ug/m3 8.1 108-38-3 Xylene, m-ug/m3 2.72 95-47-6 Xylene, o-ug/m3 Input Form 2D Soil Gas Exposure Point Concentration Table Note: Chemicals highlighted in orange are non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals. If the chemical list is changed from a prior calculator run, remember to select "See All Chemicals" on the data output sheet or newly added chemicals will not be included in risk calculations North Carolina DEQ Risk Calculator Risk for Individual Pathways Output Form 1A Version Date: July 2022 Basis: May 2022 EPA RSL Table Site ID: 19038-15-060 Exposure Unit ID: SS-MP-1 Receptor Pathway Carcinogenic Risk Hazard Index Risk exceeded? Soil NC NC NC Groundwater Use*NC NC NC Soil NC NC NC Groundwater Use*NC NC NC Construction Worker Soil NC NC NC Soil NC NC NC Surface Water*NC NC NC Receptor Pathway Carcinogenic Risk Hazard Index Risk exceeded? Groundwater to Indoor Air NC NC NC Soil Gas to Indoor Air 2.4E-06 5.5E-02 NO Indoor Air NC NC NC Groundwater to Indoor Air NC NC NC Soil Gas to Indoor Air NC NC NC Indoor Air NC NC NC Pathway Source Source Soil NC Source Groundwater NC Source Soil NC Source Groundwater NC 3. NM = Not Modeled 4. NC = Pathway not calculated DIRECT CONTACT SOIL AND WATER CALCULATORS Resident Non-Residential Worker Recreator/Trespasser 2. * = If concentrations in groundwater exceed the NC 2L Standards or IMAC, or concentrations in surface water exceed the NC 2B Standards, appropriate remediation and/or institutional control measures will be necessary to be eligible for a risk-based closure. Surface Water Exceedence of 2B at Receptor? Exceedence of 2B at Receptor? VAPOR INTRUSION CALCULATORS Resident Non-Residential Worker CONTAMINANT MIGRATION CALCULATORS Target Receptor Concentrations Exceeded? Groundwater Exceedence of 2L at Receptor? Exceedence of 2L at Receptor? 1. If lead concentrations were entered in the exposure point concentration tables, see the individual calculator sheets for lead concentrations in comparison to screening levels. Note that lead is not included in cumulative risk calculations. Notes: North Carolina DEQ Risk Calculator DEQ Risk Calculator - Vapor Intrusion - Resident Soil Gas to Indoor Air Version Date: July 2022 Basis: May 2022 EPA RSL Table Site ID: 19038-15-060 Exposure Unit ID: SS-MP-1 CAS #Chemical Name: Soil Gas Concentration (ug/m3) Calculated Indoor Air Concentration (ug/m3) Target Indoor Air Conc. for Carcinogens @ TCR = 1E-06 Target Indoor Air Conc. for Non- Carcinogens @ THQ = 0.2 Calculated Carcinogenic Risk Calculated Non- Carcinogenic Hazard Quotient 67-64-1 Acetone 9.56 0.2868 -- 71-43-2 Benzene 0.955 0.02865 3.6E-01 6.3E+00 8.0E-08 9.2E-04 75-15-0 Carbon Disulfide 1.17 0.0351 -1.5E+02 4.8E-05 67-66-3 Chloroform 1.26 0.0378 1.2E-01 2.0E+01 3.1E-07 3.7E-04 75-71-8 Dichlorodifluoromethane 3.51 0.1053 -2.1E+01 1.0E-03 107-06-2 Dichloroethane, 1,2-1.57 0.0471 1.1E-01 1.5E+00 4.4E-07 6.5E-03 75-00-3 Ethyl Chloride (Chloroethane)0.86 0.0258 -8.3E+02 6.2E-06 100-41-4 Ethylbenzene 2.38 0.0714 1.1E+00 2.1E+02 6.4E-08 6.8E-05 109-99-9 ~Tetrahydrofuran 52.9 1.587 -4.2E+02 7.6E-04 142-82-5 Heptane, N-1 0.03 -8.3E+01 7.2E-05 110-54-3 Hexane, N-0.659 0.01977 -1.5E+02 2.7E-05 67-63-0 Isopropanol 4.62 0.1386 -4.2E+01 6.6E-04 78-93-3 Methyl Ethyl Ketone (2-Butanone)1.97 0.0591 -1.0E+03 1.1E-05 75-09-2 Methylene Chloride 1.01 0.0303 1.0E+02 1.3E+02 3.0E-10 4.8E-05 91-20-3 ~Naphthalene 4.1 0.123 8.3E-02 6.3E-01 1.5E-06 3.9E-02 127-18-4 Tetrachloroethylene 0.583 0.01749 1.1E+01 8.3E+00 1.6E-09 4.2E-04 108-88-3 Toluene 5.29 0.1587 -1.0E+03 3.0E-05 75-69-4 Trichlorofluoromethane 2.05 0.0615 -- 95-63-6 Trimethylbenzene, 1,2,4-3.59 0.1077 -1.3E+01 1.7E-03 108-67-8 Trimethylbenzene, 1,3,5-0.782 0.02346 -1.3E+01 3.7E-04 108-38-3 Xylene, m-8.1 0.243 -2.1E+01 2.3E-03 95-47-6 Xylene, o-2.72 0.0816 -2.1E+01 7.8E-04 Cumulative:2.4E-06 5.5E-02 All concentrations are in ug/m3 Output Form 3B Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals. North Carolina DEQ Risk Calculator Version Date: Basis: Site Name: Site Address: DEQ Section: Site ID: Exposure Unit ID: Submittal Date: Reviewed By: Prepared By:Hart & Hickman, PC SS-MP-4 North Carolina Department of Environmental Quality Risk Calculator Dunavant Street Charlotte, NC DWM Brownfields Program 19038-15-060 July 2022 May 2022 EPA RSL Table North Carolina DEQ Risk Calculator Complete Exposure Pathways Version Date: July 2022 Basis: May 2022 EPA RSL Table Site ID: 19038-15-060 Exposure Unit ID: SS-MP-4 Note: Risk output will only be calculated for complete exposure pathways. Receptor Pathway Check box if pathway complete Soil Groundwater Use Soil Groundwater Use Construction Worker Soil Soil Surface Water Groundwater to Indoor Air Soil Gas to Indoor Air Indoor Air Groundwater to Indoor Air Soil Gas to Indoor Air Indoor Air Source Soil Source Groundwater Source Soil Source Groundwater Input Form 1A VAPOR INTRUSION PATHWAYS DIRECT CONTACT SOIL AND WATER PATHWAYS Resident Non-Residential Worker Recreator/Trespasser Resident Non-Residential Worker CONTAMINANT MIGRATION PATHWAYS Groundwater Surface Water North Carolina DEQ Risk Calculator Exposure Point Concentrations Version Date: July 2022 Basis: May 2022 EPA RSL Table Site ID: 19038-15-060 Exposure Unit ID: SS-MP-4 Description of Exposure Point Concentration Selection: Exposure Point Concentration (ug/m3) Notes:CAS Number Chemical Minimum Concentration (Qualifier) Maximum Concentration (Qualifier) Units Location of Maximum Concentration Detection Frequency Range of Detection Limits Concentration Used for Screening Background Value Screening Toxicity Value (Screening Level) (n/c) Potential ARAR/TBC Value Potential ARAR/TBC Source COPC Flag (Y/N) Rationale for Selection or Deletion 12.6 67-64-1 Acetone ug/m3 0.323 71-43-2 Benzene ug/m3 0.71 75-15-0 Carbon Disulfide ug/m3 5.83 110-82-7 Cyclohexane ug/m3 3.53 75-71-8 Dichlorodifluoromethane ug/m3 0.356 100-41-4 Ethylbenzene ug/m3 52.2 109-99-9 ~Tetrahydrofuran ug/m3 0.395 110-54-3 Hexane, N-ug/m3 3.43 67-63-0 Isopropanol ug/m3 8.5 78-93-3 Methyl Ethyl Ketone (2-Butanone)ug/m3 0.702 75-09-2 Methylene Chloride ug/m3 4.13 91-20-3 ~Naphthalene ug/m3 1.53 108-88-3 Toluene ug/m3 0.697 76-13-1 Trichloro-1,2,2-trifluoroethane, 1,1,2-ug/m3 0.613 79-01-6 Trichloroethylene ug/m3 2.97 75-69-4 Trichlorofluoromethane ug/m3 0.816 95-63-6 Trimethylbenzene, 1,2,4-ug/m3 1.35 108-38-3 Xylene, m-ug/m3 0.564 95-47-6 Xylene, o-ug/m3 Input Form 2D Soil Gas Exposure Point Concentration Table Note: Chemicals highlighted in orange are non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals. If the chemical list is changed from a prior calculator run, remember to select "See All Chemicals" on the data output sheet or newly added chemicals will not be included in risk calculations North Carolina DEQ Risk Calculator Risk for Individual Pathways Output Form 1A Version Date: July 2022 Basis: May 2022 EPA RSL Table Site ID: 19038-15-060 Exposure Unit ID: SS-MP-4 Receptor Pathway Carcinogenic Risk Hazard Index Risk exceeded? Soil NC NC NC Groundwater Use*NC NC NC Soil NC NC NC Groundwater Use*NC NC NC Construction Worker Soil NC NC NC Soil NC NC NC Surface Water*NC NC NC Receptor Pathway Carcinogenic Risk Hazard Index Risk exceeded? Groundwater to Indoor Air NC NC NC Soil Gas to Indoor Air 1.6E-06 5.2E-02 NO Indoor Air NC NC NC Groundwater to Indoor Air NC NC NC Soil Gas to Indoor Air NC NC NC Indoor Air NC NC NC Pathway Source Source Soil NC Source Groundwater NC Source Soil NC Source Groundwater NC 3. NM = Not Modeled 4. NC = Pathway not calculated DIRECT CONTACT SOIL AND WATER CALCULATORS Resident Non-Residential Worker Recreator/Trespasser 2. * = If concentrations in groundwater exceed the NC 2L Standards or IMAC, or concentrations in surface water exceed the NC 2B Standards, appropriate remediation and/or institutional control measures will be necessary to be eligible for a risk-based closure. Surface Water Exceedence of 2B at Receptor? Exceedence of 2B at Receptor? VAPOR INTRUSION CALCULATORS Resident Non-Residential Worker CONTAMINANT MIGRATION CALCULATORS Target Receptor Concentrations Exceeded? Groundwater Exceedence of 2L at Receptor? Exceedence of 2L at Receptor? 1. If lead concentrations were entered in the exposure point concentration tables, see the individual calculator sheets for lead concentrations in comparison to screening levels. Note that lead is not included in cumulative risk calculations. Notes: North Carolina DEQ Risk Calculator DEQ Risk Calculator - Vapor Intrusion - Resident Soil Gas to Indoor Air Version Date: July 2022 Basis: May 2022 EPA RSL Table Site ID: 19038-15-060 Exposure Unit ID: SS-MP-4 CAS #Chemical Name: Soil Gas Concentration (ug/m3) Calculated Indoor Air Concentration (ug/m3) Target Indoor Air Conc. for Carcinogens @ TCR = 1E-06 Target Indoor Air Conc. for Non- Carcinogens @ THQ = 0.2 Calculated Carcinogenic Risk Calculated Non- Carcinogenic Hazard Quotient 67-64-1 Acetone 12.6 0.378 -- 71-43-2 Benzene 0.323 0.00969 3.6E-01 6.3E+00 2.7E-08 3.1E-04 75-15-0 Carbon Disulfide 0.71 0.0213 -1.5E+02 2.9E-05 110-82-7 Cyclohexane 5.83 0.1749 -1.3E+03 2.8E-05 75-71-8 Dichlorodifluoromethane 3.53 0.1059 -2.1E+01 1.0E-03 100-41-4 Ethylbenzene 0.356 0.01068 1.1E+00 2.1E+02 9.5E-09 1.0E-05 109-99-9 ~Tetrahydrofuran 52.2 1.566 -4.2E+02 7.5E-04 110-54-3 Hexane, N-0.395 0.01185 -1.5E+02 1.6E-05 67-63-0 Isopropanol 3.43 0.1029 -4.2E+01 4.9E-04 78-93-3 Methyl Ethyl Ketone (2-Butanone)8.5 0.255 -1.0E+03 4.9E-05 75-09-2 Methylene Chloride 0.702 0.02106 1.0E+02 1.3E+02 2.1E-10 3.4E-05 91-20-3 ~Naphthalene 4.13 0.1239 8.3E-02 6.3E-01 1.5E-06 4.0E-02 108-88-3 Toluene 1.53 0.0459 -1.0E+03 8.8E-06 76-13-1 Trichloro-1,2,2-trifluoroethane, 1,1,2-0.697 0.02091 -1.0E+03 4.0E-06 79-01-6 Trichloroethylene 0.613 0.01839 4.8E-01 4.2E-01 3.8E-08 8.8E-03 75-69-4 Trichlorofluoromethane 2.97 0.0891 -- 95-63-6 Trimethylbenzene, 1,2,4-0.816 0.02448 -1.3E+01 3.9E-04 108-38-3 Xylene, m-1.35 0.0405 -2.1E+01 3.9E-04 95-47-6 Xylene, o-0.564 0.01692 -2.1E+01 1.6E-04 Cumulative:1.6E-06 5.2E-02 All concentrations are in ug/m3 Output Form 3B Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals. North Carolina DEQ Risk Calculator Version Date: Basis: Site Name: Site Address: DEQ Section: Site ID: Exposure Unit ID: Submittal Date: Reviewed By: Prepared By:Hart & Hickman, PC SS-MP-6/DUP Worst Case North Carolina Department of Environmental Quality Risk Calculator Dunavant Street Charlotte, NC DWM Brownfields Program 19038-15-060 July 2022 May 2022 EPA RSL Table North Carolina DEQ Risk Calculator Complete Exposure Pathways Version Date: July 2022 Basis: May 2022 EPA RSL Table Site ID: 19038-15-060 Exposure Unit ID: SS-MP-6/DUP Worst Case Note: Risk output will only be calculated for complete exposure pathways. Receptor Pathway Check box if pathway complete Soil Groundwater Use Soil Groundwater Use Construction Worker Soil Soil Surface Water Groundwater to Indoor Air Soil Gas to Indoor Air Indoor Air Groundwater to Indoor Air Soil Gas to Indoor Air Indoor Air Source Soil Source Groundwater Source Soil Source Groundwater Input Form 1A VAPOR INTRUSION PATHWAYS DIRECT CONTACT SOIL AND WATER PATHWAYS Resident Non-Residential Worker Recreator/Trespasser Resident Non-Residential Worker CONTAMINANT MIGRATION PATHWAYS Groundwater Surface Water North Carolina DEQ Risk Calculator Exposure Point Concentrations Version Date: July 2022 Basis: May 2022 EPA RSL Table Site ID: 19038-15-060 Exposure Unit ID: SS-MP-6/DUP Worst Case Description of Exposure Point Concentration Selection: Exposure Point Concentration (ug/m3) Notes:CAS Number Chemical Minimum Concentration (Qualifier) Maximum Concentration (Qualifier) Units Location of Maximum Concentration Detection Frequency Range of Detection Limits Concentration Used for Screening Background Value Screening Toxicity Value (Screening Level) (n/c) Potential ARAR/TBC Value Potential ARAR/TBC Source COPC Flag (Y/N) Rationale for Selection or Deletion 42.3 67-64-1 Acetone ug/m3 0.553 71-43-2 Benzene ug/m3 1.01 75-15-0 Carbon Disulfide ug/m3 0.469 67-66-3 Chloroform ug/m3 4.56 110-82-7 Cyclohexane ug/m3 3.69 75-71-8 Dichlorodifluoromethane ug/m3 5.25 141-78-6 Ethyl Acetate ug/m3 0.643 100-41-4 Ethylbenzene ug/m3 1.52 109-99-9 ~Tetrahydrofuran ug/m3 4.09 591-78-6 Hexanone, 2-ug/m3 55.6 67-63-0 Isopropanol ug/m3 3.31 78-93-3 Methyl Ethyl Ketone (2-Butanone)ug/m3 2.26 108-10-1 Methyl Isobutyl Ketone (4-methyl-2-pentanone)ug/m3 1.18 75-09-2 Methylene Chloride ug/m3 4.48 91-20-3 ~Naphthalene ug/m3 0.562 100-42-5 Styrene ug/m3 2.43 108-88-3 Toluene ug/m3 0.828 76-13-1 Trichloro-1,2,2-trifluoroethane, 1,1,2-ug/m3 2.19 75-69-4 Trichlorofluoromethane ug/m3 1.65 95-63-6 Trimethylbenzene, 1,2,4-ug/m3 0.403 108-67-8 Trimethylbenzene, 1,3,5-ug/m3 2.41 108-38-3 Xylene, m-ug/m3 1.06 95-47-6 Xylene, o-ug/m3 Input Form 2D Soil Gas Exposure Point Concentration Table Note: Chemicals highlighted in orange are non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals. If the chemical list is changed from a prior calculator run, remember to select "See All Chemicals" on the data output sheet or newly added chemicals will not be included in risk calculations North Carolina DEQ Risk Calculator Risk for Individual Pathways Output Form 1A Version Date: July 2022 Basis: May 2022 EPA RSL Table Site ID: 19038-15-060 Exposure Unit ID: SS-MP-6/DUP Worst Case Receptor Pathway Carcinogenic Risk Hazard Index Risk exceeded? Soil NC NC NC Groundwater Use*NC NC NC Soil NC NC NC Groundwater Use*NC NC NC Construction Worker Soil NC NC NC Soil NC NC NC Surface Water*NC NC NC Receptor Pathway Carcinogenic Risk Hazard Index Risk exceeded? Groundwater to Indoor Air NC NC NC Soil Gas to Indoor Air 1.8E-06 6.1E-02 NO Indoor Air NC NC NC Groundwater to Indoor Air NC NC NC Soil Gas to Indoor Air NC NC NC Indoor Air NC NC NC Pathway Source Source Soil NC Source Groundwater NC Source Soil NC Source Groundwater NC 3. NM = Not Modeled 4. NC = Pathway not calculated DIRECT CONTACT SOIL AND WATER CALCULATORS Resident Non-Residential Worker Recreator/Trespasser 2. * = If concentrations in groundwater exceed the NC 2L Standards or IMAC, or concentrations in surface water exceed the NC 2B Standards, appropriate remediation and/or institutional control measures will be necessary to be eligible for a risk-based closure. Surface Water Exceedence of 2B at Receptor? Exceedence of 2B at Receptor? VAPOR INTRUSION CALCULATORS Resident Non-Residential Worker CONTAMINANT MIGRATION CALCULATORS Target Receptor Concentrations Exceeded? Groundwater Exceedence of 2L at Receptor? Exceedence of 2L at Receptor? 1. If lead concentrations were entered in the exposure point concentration tables, see the individual calculator sheets for lead concentrations in comparison to screening levels. Note that lead is not included in cumulative risk calculations. Notes: North Carolina DEQ Risk Calculator DEQ Risk Calculator - Vapor Intrusion - Resident Soil Gas to Indoor Air Version Date: July 2022 Basis: May 2022 EPA RSL Table Site ID: 19038-15-060 Exposure Unit ID: SS-MP-6/DUP Worst Case CAS #Chemical Name: Soil Gas Concentration (ug/m3) Calculated Indoor Air Concentration (ug/m3) Target Indoor Air Conc. for Carcinogens @ TCR = 1E-06 Target Indoor Air Conc. for Non- Carcinogens @ THQ = 0.2 Calculated Carcinogenic Risk Calculated Non- Carcinogenic Hazard Quotient 67-64-1 Acetone 42.3 1.269 -- 71-43-2 Benzene 0.553 0.01659 3.6E-01 6.3E+00 4.6E-08 5.3E-04 75-15-0 Carbon Disulfide 1.01 0.0303 -1.5E+02 4.2E-05 67-66-3 Chloroform 0.469 0.01407 1.2E-01 2.0E+01 1.2E-07 1.4E-04 110-82-7 Cyclohexane 4.56 0.1368 -1.3E+03 2.2E-05 75-71-8 Dichlorodifluoromethane 3.69 0.1107 -2.1E+01 1.1E-03 141-78-6 Ethyl Acetate 5.25 0.1575 -1.5E+01 2.2E-03 100-41-4 Ethylbenzene 0.643 0.01929 1.1E+00 2.1E+02 1.7E-08 1.8E-05 109-99-9 ~Tetrahydrofuran 1.52 0.0456 -4.2E+02 2.2E-05 591-78-6 Hexanone, 2-4.09 0.1227 -6.3E+00 3.9E-03 67-63-0 Isopropanol 55.6 1.668 -4.2E+01 8.0E-03 78-93-3 Methyl Ethyl Ketone (2-Butanone)3.31 0.0993 -1.0E+03 1.9E-05 108-10-1 Methyl Isobutyl Ketone (4-methyl-2-pentanone)2.26 0.0678 -6.3E+02 2.2E-05 75-09-2 Methylene Chloride 1.18 0.0354 1.0E+02 1.3E+02 3.5E-10 5.7E-05 91-20-3 ~Naphthalene 4.48 0.1344 8.3E-02 6.3E-01 1.6E-06 4.3E-02 100-42-5 Styrene 0.562 0.01686 -2.1E+02 1.6E-05 108-88-3 Toluene 2.43 0.0729 -1.0E+03 1.4E-05 76-13-1 Trichloro-1,2,2-trifluoroethane, 1,1,2-0.828 0.02484 -1.0E+03 4.8E-06 75-69-4 Trichlorofluoromethane 2.19 0.0657 -- 95-63-6 Trimethylbenzene, 1,2,4-1.65 0.0495 -1.3E+01 7.9E-04 108-67-8 Trimethylbenzene, 1,3,5-0.403 0.01209 -1.3E+01 1.9E-04 108-38-3 Xylene, m-2.41 0.0723 -2.1E+01 6.9E-04 95-47-6 Xylene, o-1.06 0.0318 -2.1E+01 3.0E-04 Cumulative:1.8E-06 6.1E-02 All concentrations are in ug/m3 Output Form 3B Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals. North Carolina DEQ Risk Calculator Version Date: Basis: Site Name: Site Address: DEQ Section: Site ID: Exposure Unit ID: Submittal Date: Reviewed By: Prepared By:Hart & Hickman, PC SS-MP-7 North Carolina Department of Environmental Quality Risk Calculator Dunavant Street Charlotte, NC DWM Brownfields Program 19038-15-060 July 2022 May 2022 EPA RSL Table North Carolina DEQ Risk Calculator Complete Exposure Pathways Version Date: July 2022 Basis: May 2022 EPA RSL Table Site ID: 19038-15-060 Exposure Unit ID: SS-MP-7 Note: Risk output will only be calculated for complete exposure pathways. Receptor Pathway Check box if pathway complete Soil Groundwater Use Soil Groundwater Use Construction Worker Soil Soil Surface Water Groundwater to Indoor Air Soil Gas to Indoor Air Indoor Air Groundwater to Indoor Air Soil Gas to Indoor Air Indoor Air Source Soil Source Groundwater Source Soil Source Groundwater Input Form 1A VAPOR INTRUSION PATHWAYS DIRECT CONTACT SOIL AND WATER PATHWAYS Resident Non-Residential Worker Recreator/Trespasser Resident Non-Residential Worker CONTAMINANT MIGRATION PATHWAYS Groundwater Surface Water North Carolina DEQ Risk Calculator Exposure Point Concentrations Version Date: July 2022 Basis: May 2022 EPA RSL Table Site ID: 19038-15-060 Exposure Unit ID: SS-MP-7 Description of Exposure Point Concentration Selection: Exposure Point Concentration (ug/m3) Notes:CAS Number Chemical Minimum Concentration (Qualifier) Maximum Concentration (Qualifier) Units Location of Maximum Concentration Detection Frequency Range of Detection Limits Concentration Used for Screening Background Value Screening Toxicity Value (Screening Level) (n/c) Potential ARAR/TBC Value Potential ARAR/TBC Source COPC Flag (Y/N) Rationale for Selection or Deletion 11.3 67-64-1 Acetone ug/m3 0.387 71-43-2 Benzene ug/m3 1.22 75-15-0 Carbon Disulfide ug/m3 0.718 67-66-3 Chloroform ug/m3 3.8 110-82-7 Cyclohexane ug/m3 3.56 75-71-8 Dichlorodifluoromethane ug/m3 0.677 100-41-4 Ethylbenzene ug/m3 125 109-99-9 ~Tetrahydrofuran ug/m3 0.317 110-54-3 Hexane, N-ug/m3 6.93 67-63-0 Isopropanol ug/m3 7.66 78-93-3 Methyl Ethyl Ketone (2-Butanone)ug/m3 1.84 75-09-2 Methylene Chloride ug/m3 4.05 91-20-3 ~Naphthalene ug/m3 1.78 127-18-4 Tetrachloroethylene ug/m3 2.74 108-88-3 Toluene ug/m3 0.782 76-13-1 Trichloro-1,2,2-trifluoroethane, 1,1,2-ug/m3 2.04 75-69-4 Trichlorofluoromethane ug/m3 1.27 95-63-6 Trimethylbenzene, 1,2,4-ug/m3 2.54 108-38-3 Xylene, m-ug/m3 1.05 95-47-6 Xylene, o-ug/m3 Input Form 2D Soil Gas Exposure Point Concentration Table Note: Chemicals highlighted in orange are non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals. If the chemical list is changed from a prior calculator run, remember to select "See All Chemicals" on the data output sheet or newly added chemicals will not be included in risk calculations North Carolina DEQ Risk Calculator Risk for Individual Pathways Output Form 1A Version Date: July 2022 Basis: May 2022 EPA RSL Table Site ID: 19038-15-060 Exposure Unit ID: SS-MP-7 Receptor Pathway Carcinogenic Risk Hazard Index Risk exceeded? Soil NC NC NC Groundwater Use*NC NC NC Soil NC NC NC Groundwater Use*NC NC NC Construction Worker Soil NC NC NC Soil NC NC NC Surface Water*NC NC NC Receptor Pathway Carcinogenic Risk Hazard Index Risk exceeded? Groundwater to Indoor Air NC NC NC Soil Gas to Indoor Air 1.7E-06 4.6E-02 NO Indoor Air NC NC NC Groundwater to Indoor Air NC NC NC Soil Gas to Indoor Air NC NC NC Indoor Air NC NC NC Pathway Source Source Soil NC Source Groundwater NC Source Soil NC Source Groundwater NC 3. NM = Not Modeled 4. NC = Pathway not calculated DIRECT CONTACT SOIL AND WATER CALCULATORS Resident Non-Residential Worker Recreator/Trespasser 2. * = If concentrations in groundwater exceed the NC 2L Standards or IMAC, or concentrations in surface water exceed the NC 2B Standards, appropriate remediation and/or institutional control measures will be necessary to be eligible for a risk-based closure. Surface Water Exceedence of 2B at Receptor? Exceedence of 2B at Receptor? VAPOR INTRUSION CALCULATORS Resident Non-Residential Worker CONTAMINANT MIGRATION CALCULATORS Target Receptor Concentrations Exceeded? Groundwater Exceedence of 2L at Receptor? Exceedence of 2L at Receptor? 1. If lead concentrations were entered in the exposure point concentration tables, see the individual calculator sheets for lead concentrations in comparison to screening levels. Note that lead is not included in cumulative risk calculations. Notes: North Carolina DEQ Risk Calculator DEQ Risk Calculator - Vapor Intrusion - Resident Soil Gas to Indoor Air Version Date: July 2022 Basis: May 2022 EPA RSL Table Site ID: 19038-15-060 Exposure Unit ID: SS-MP-7 CAS #Chemical Name: Soil Gas Concentration (ug/m3) Calculated Indoor Air Concentration (ug/m3) Target Indoor Air Conc. for Carcinogens @ TCR = 1E-06 Target Indoor Air Conc. for Non- Carcinogens @ THQ = 0.2 Calculated Carcinogenic Risk Calculated Non- Carcinogenic Hazard Quotient 67-64-1 Acetone 11.3 0.339 -- 71-43-2 Benzene 0.387 0.01161 3.6E-01 6.3E+00 3.2E-08 3.7E-04 75-15-0 Carbon Disulfide 1.22 0.0366 -1.5E+02 5.0E-05 67-66-3 Chloroform 0.718 0.02154 1.2E-01 2.0E+01 1.8E-07 2.1E-04 110-82-7 Cyclohexane 3.8 0.114 -1.3E+03 1.8E-05 75-71-8 Dichlorodifluoromethane 3.56 0.1068 -2.1E+01 1.0E-03 100-41-4 Ethylbenzene 0.677 0.02031 1.1E+00 2.1E+02 1.8E-08 1.9E-05 109-99-9 ~Tetrahydrofuran 125 3.75 -4.2E+02 1.8E-03 110-54-3 Hexane, N-0.317 0.00951 -1.5E+02 1.3E-05 67-63-0 Isopropanol 6.93 0.2079 -4.2E+01 1.0E-03 78-93-3 Methyl Ethyl Ketone (2-Butanone)7.66 0.2298 -1.0E+03 4.4E-05 75-09-2 Methylene Chloride 1.84 0.0552 1.0E+02 1.3E+02 5.4E-10 8.8E-05 91-20-3 ~Naphthalene 4.05 0.1215 8.3E-02 6.3E-01 1.5E-06 3.9E-02 127-18-4 Tetrachloroethylene 1.78 0.0534 1.1E+01 8.3E+00 4.9E-09 1.3E-03 108-88-3 Toluene 2.74 0.0822 -1.0E+03 1.6E-05 76-13-1 Trichloro-1,2,2-trifluoroethane, 1,1,2-0.782 0.02346 -1.0E+03 4.5E-06 75-69-4 Trichlorofluoromethane 2.04 0.0612 -- 95-63-6 Trimethylbenzene, 1,2,4-1.27 0.0381 -1.3E+01 6.1E-04 108-38-3 Xylene, m-2.54 0.0762 -2.1E+01 7.3E-04 95-47-6 Xylene, o-1.05 0.0315 -2.1E+01 3.0E-04 Cumulative:1.7E-06 4.6E-02 All concentrations are in ug/m3 Output Form 3B Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals. North Carolina DEQ Risk Calculator Version Date: Basis: Site Name: Site Address: DEQ Section: Site ID: Exposure Unit ID: Submittal Date: Reviewed By: Prepared By:Hart & Hickman, PC SS-MP-9 North Carolina Department of Environmental Quality Risk Calculator Dunavant Street Charlotte, NC DWM Brownfields Program 19038-15-060 July 2022 May 2022 EPA RSL Table North Carolina DEQ Risk Calculator Complete Exposure Pathways Version Date: July 2022 Basis: May 2022 EPA RSL Table Site ID: 19038-15-060 Exposure Unit ID: SS-MP-9 Note: Risk output will only be calculated for complete exposure pathways. Receptor Pathway Check box if pathway complete Soil Groundwater Use Soil Groundwater Use Construction Worker Soil Soil Surface Water Groundwater to Indoor Air Soil Gas to Indoor Air Indoor Air Groundwater to Indoor Air Soil Gas to Indoor Air Indoor Air Source Soil Source Groundwater Source Soil Source Groundwater Input Form 1A VAPOR INTRUSION PATHWAYS DIRECT CONTACT SOIL AND WATER PATHWAYS Resident Non-Residential Worker Recreator/Trespasser Resident Non-Residential Worker CONTAMINANT MIGRATION PATHWAYS Groundwater Surface Water North Carolina DEQ Risk Calculator Exposure Point Concentrations Version Date: July 2022 Basis: May 2022 EPA RSL Table Site ID: 19038-15-060 Exposure Unit ID: SS-MP-9 Description of Exposure Point Concentration Selection: Exposure Point Concentration (ug/m3) Notes:CAS Number Chemical Minimum Concentration (Qualifier) Maximum Concentration (Qualifier) Units Location of Maximum Concentration Detection Frequency Range of Detection Limits Concentration Used for Screening Background Value Screening Toxicity Value (Screening Level) (n/c) Potential ARAR/TBC Value Potential ARAR/TBC Source COPC Flag (Y/N) Rationale for Selection or Deletion 7.73 67-64-1 Acetone ug/m3 0.709 71-43-2 Benzene ug/m3 0.972 75-15-0 Carbon Disulfide ug/m3 1.98 110-82-7 Cyclohexane ug/m3 2.9 75-71-8 Dichlorodifluoromethane ug/m3 2.79 109-99-9 ~Tetrahydrofuran ug/m3 2.31 67-63-0 Isopropanol ug/m3 1.4 78-93-3 Methyl Ethyl Ketone (2-Butanone)ug/m3 0.955 75-09-2 Methylene Chloride ug/m3 0.814 127-18-4 Tetrachloroethylene ug/m3 0.746 108-88-3 Toluene ug/m3 1.96 75-69-4 Trichlorofluoromethane ug/m3 0.516 95-63-6 Trimethylbenzene, 1,2,4-ug/m3 0.899 108-38-3 Xylene, m-ug/m3 0.412 95-47-6 Xylene, o-ug/m3 Input Form 2D Soil Gas Exposure Point Concentration Table Note: Chemicals highlighted in orange are non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals. If the chemical list is changed from a prior calculator run, remember to select "See All Chemicals" on the data output sheet or newly added chemicals will not be included in risk calculations North Carolina DEQ Risk Calculator Risk for Individual Pathways Output Form 1A Version Date: July 2022 Basis: May 2022 EPA RSL Table Site ID: 19038-15-060 Exposure Unit ID: SS-MP-9 Receptor Pathway Carcinogenic Risk Hazard Index Risk exceeded? Soil NC NC NC Groundwater Use*NC NC NC Soil NC NC NC Groundwater Use*NC NC NC Construction Worker Soil NC NC NC Soil NC NC NC Surface Water*NC NC NC Receptor Pathway Carcinogenic Risk Hazard Index Risk exceeded? Groundwater to Indoor Air NC NC NC Soil Gas to Indoor Air 6.2E-08 3.2E-03 NO Indoor Air NC NC NC Groundwater to Indoor Air NC NC NC Soil Gas to Indoor Air NC NC NC Indoor Air NC NC NC Pathway Source Source Soil NC Source Groundwater NC Source Soil NC Source Groundwater NC 3. NM = Not Modeled 4. NC = Pathway not calculated DIRECT CONTACT SOIL AND WATER CALCULATORS Resident Non-Residential Worker Recreator/Trespasser 2. * = If concentrations in groundwater exceed the NC 2L Standards or IMAC, or concentrations in surface water exceed the NC 2B Standards, appropriate remediation and/or institutional control measures will be necessary to be eligible for a risk-based closure. Surface Water Exceedence of 2B at Receptor? Exceedence of 2B at Receptor? VAPOR INTRUSION CALCULATORS Resident Non-Residential Worker CONTAMINANT MIGRATION CALCULATORS Target Receptor Concentrations Exceeded? Groundwater Exceedence of 2L at Receptor? Exceedence of 2L at Receptor? 1. If lead concentrations were entered in the exposure point concentration tables, see the individual calculator sheets for lead concentrations in comparison to screening levels. Note that lead is not included in cumulative risk calculations. Notes: North Carolina DEQ Risk Calculator DEQ Risk Calculator - Vapor Intrusion - Resident Soil Gas to Indoor Air Version Date: July 2022 Basis: May 2022 EPA RSL Table Site ID: 19038-15-060 Exposure Unit ID: SS-MP-9 CAS #Chemical Name: Soil Gas Concentration (ug/m3) Calculated Indoor Air Concentration (ug/m3) Target Indoor Air Conc. for Carcinogens @ TCR = 1E-06 Target Indoor Air Conc. for Non- Carcinogens @ THQ = 0.2 Calculated Carcinogenic Risk Calculated Non- Carcinogenic Hazard Quotient 67-64-1 Acetone 7.73 0.2319 -- 71-43-2 Benzene 0.709 0.02127 3.6E-01 6.3E+00 5.9E-08 6.8E-04 75-15-0 Carbon Disulfide 0.972 0.02916 -1.5E+02 4.0E-05 110-82-7 Cyclohexane 1.98 0.0594 -1.3E+03 9.5E-06 75-71-8 Dichlorodifluoromethane 2.9 0.087 -2.1E+01 8.3E-04 109-99-9 ~Tetrahydrofuran 2.79 0.0837 -4.2E+02 4.0E-05 67-63-0 Isopropanol 2.31 0.0693 -4.2E+01 3.3E-04 78-93-3 Methyl Ethyl Ketone (2-Butanone)1.4 0.042 -1.0E+03 8.1E-06 75-09-2 Methylene Chloride 0.955 0.02865 1.0E+02 1.3E+02 2.8E-10 4.6E-05 127-18-4 Tetrachloroethylene 0.814 0.02442 1.1E+01 8.3E+00 2.3E-09 5.9E-04 108-88-3 Toluene 0.746 0.02238 -1.0E+03 4.3E-06 75-69-4 Trichlorofluoromethane 1.96 0.0588 -- 95-63-6 Trimethylbenzene, 1,2,4-0.516 0.01548 -1.3E+01 2.5E-04 108-38-3 Xylene, m-0.899 0.02697 -2.1E+01 2.6E-04 95-47-6 Xylene, o-0.412 0.01236 -2.1E+01 1.2E-04 Cumulative:6.2E-08 3.2E-03 All concentrations are in ug/m3 Output Form 3B Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals. North Carolina DEQ Risk Calculator Version Date: Basis: Site Name: Site Address: DEQ Section: Site ID: Exposure Unit ID: Submittal Date: Reviewed By: SS-MP-10 North Carolina Department of Environmental Quality Risk Calculator Dunavant Street Charlotte, NC DWM Brownfields Program 19038-15-060 July 2022 May 2022 EPA RSL Table Prepared By:Hart & Hickman, PC North Carolina DEQ Risk Calculator Complete Exposure Pathways Version Date: July 2022 Basis: May 2022 EPA RSL Table Site ID: 19038-15-060 Exposure Unit ID: SS-MP-10 Note: Risk output will only be calculated for complete exposure pathways. Receptor Pathway Check box if pathway complete Soil Groundwater Use Soil Groundwater Use Construction Worker Soil Soil Surface Water Groundwater to Indoor Air Soil Gas to Indoor Air Indoor Air Groundwater to Indoor Air Soil Gas to Indoor Air Indoor Air Source Soil Source Groundwater Source Soil Source Groundwater Resident Non-Residential Worker CONTAMINANT MIGRATION PATHWAYS Groundwater Surface Water Input Form 1A VAPOR INTRUSION PATHWAYS DIRECT CONTACT SOIL AND WATER PATHWAYS Resident Non-Residential Worker Recreator/Trespasser North Carolina DEQ Risk Calculator Exposure Point Concentrations Version Date: July 2022 Basis: May 2022 EPA RSL Table Site ID: 19038-15-060 Exposure Unit ID: SS-MP-10 Description of Exposure Point Concentration Selection: Exposure Point Concentration (ug/m3) Notes:CAS Number Chemical Minimum Concentration (Qualifier) Maximum Concentration (Qualifier) Units Location of Maximum Concentration Detection Frequency Range of Detection Limits Concentration Used for Screening Background Value Screening Toxicity Value (Screening Level) (n/c) Potential ARAR/TBC Value Potential ARAR/TBC Source COPC Flag (Y/N) Rationale for Selection or Deletion 0.809 74-87-3 Chloromethane ug/m3 3.14 75-71-8 Dichlorodifluoromethane ug/m3 1410 109-99-9 ~Tetrahydrofuran ug/m3 189 78-93-3 Methyl Ethyl Ketone (2-Butanone)ug/m3 1.37 108-88-3 Toluene ug/m3 2.29 75-69-4 Trichlorofluoromethane ug/m3 Input Form 2D Soil Gas Exposure Point Concentration Table Note: Chemicals highlighted in orange are non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals. If the chemical list is changed from a prior calculator run, remember to select "See All Chemicals" on the data output sheet or newly added chemicals will not be included in risk calculations North Carolina DEQ Risk Calculator Risk for Individual Pathways Output Form 1A Version Date: July 2022 Basis: May 2022 EPA RSL Table Site ID: 19038-15-060 Exposure Unit ID: SS-MP-10 Receptor Pathway Carcinogenic Risk Hazard Index Risk exceeded? Soil NC NC NC Groundwater Use*NC NC NC Soil NC NC NC Groundwater Use*NC NC NC Construction Worker Soil NC NC NC Soil NC NC NC Surface Water*NC NC NC Receptor Pathway Carcinogenic Risk Hazard Index Risk exceeded? Groundwater to Indoor Air NC NC NC Soil Gas to Indoor Air 0.0E+00 2.3E-02 NO Indoor Air NC NC NC Groundwater to Indoor Air NC NC NC Soil Gas to Indoor Air NC NC NC Indoor Air NC NC NC Pathway Source Source Soil NC Source Groundwater NC Source Soil NC Source Groundwater NC 3. NM = Not Modeled 4. NC = Pathway not calculated 2. * = If concentrations in groundwater exceed the NC 2L Standards or IMAC, or concentrations in surface water exceed the NC 2B Standards, appropriate remediation and/or institutional control measures will be necessary to be eligible for a risk-based closure. Surface Water Exceedence of 2B at Receptor? Exceedence of 2B at Receptor? VAPOR INTRUSION CALCULATORS Resident Non-Residential Worker CONTAMINANT MIGRATION CALCULATORS Target Receptor Concentrations Exceeded? Groundwater Exceedence of 2L at Receptor? Exceedence of 2L at Receptor? 1. If lead concentrations were entered in the exposure point concentration tables, see the individual calculator sheets for lead concentrations in comparison to screening levels. Note that lead is not included in cumulative risk calculations. Notes: DIRECT CONTACT SOIL AND WATER CALCULATORS Resident Non-Residential Worker Recreator/Trespasser North Carolina DEQ Risk Calculator DEQ Risk Calculator - Vapor Intrusion - Resident Soil Gas to Indoor Air Version Date: July 2022 Basis: May 2022 EPA RSL Table Site ID: 19038-15-060 Exposure Unit ID: SS-MP-10 CAS #Chemical Name: Soil Gas Concentration (ug/m3) Calculated Indoor Air Concentration (ug/m3) Target Indoor Air Conc. for Carcinogens @ TCR = 1E-06 Target Indoor Air Conc. for Non- Carcinogens @ THQ = 0.2 Calculated Carcinogenic Risk Calculated Non- Carcinogenic Hazard Quotient 74-87-3 Chloromethane 0.809 0.02427 -1.9E+01 2.6E-04 75-71-8 Dichlorodifluoromethane 3.14 0.0942 -2.1E+01 9.0E-04 109-99-9 ~Tetrahydrofuran 1410 42.3 -4.2E+02 2.0E-02 78-93-3 Methyl Ethyl Ketone (2-Butanone)189 5.67 -1.0E+03 1.1E-03 108-88-3 Toluene 1.37 0.0411 -1.0E+03 7.9E-06 75-69-4 Trichlorofluoromethane 2.29 0.0687 -- Cumulative:0.0E+00 2.3E-02 All concentrations are in ug/m3 Output Form 3B Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals. North Carolina DEQ Risk Calculator Version Date: Basis: Site Name: Site Address: DEQ Section: Site ID: Exposure Unit ID: Submittal Date: Reviewed By: Prepared By:Hart & Hickman, PC SS-MP-12 North Carolina Department of Environmental Quality Risk Calculator Dunavant Street Charlotte, NC DWM Brownfields Program 19038-15-060 July 2022 May 2022 EPA RSL Table North Carolina DEQ Risk Calculator Complete Exposure Pathways Version Date: July 2022 Basis: May 2022 EPA RSL Table Site ID: 19038-15-060 Exposure Unit ID: SS-MP-12 Note: Risk output will only be calculated for complete exposure pathways. Receptor Pathway Check box if pathway complete Soil Groundwater Use Soil Groundwater Use Construction Worker Soil Soil Surface Water Groundwater to Indoor Air Soil Gas to Indoor Air Indoor Air Groundwater to Indoor Air Soil Gas to Indoor Air Indoor Air Source Soil Source Groundwater Source Soil Source Groundwater Input Form 1A VAPOR INTRUSION PATHWAYS DIRECT CONTACT SOIL AND WATER PATHWAYS Resident Non-Residential Worker Recreator/Trespasser Resident Non-Residential Worker CONTAMINANT MIGRATION PATHWAYS Groundwater Surface Water North Carolina DEQ Risk Calculator Exposure Point Concentrations Version Date: July 2022 Basis: May 2022 EPA RSL Table Site ID: 19038-15-060 Exposure Unit ID: SS-MP-12 Description of Exposure Point Concentration Selection: Exposure Point Concentration (ug/m3) Notes:CAS Number Chemical Minimum Concentration (Qualifier) Maximum Concentration (Qualifier) Units Location of Maximum Concentration Detection Frequency Range of Detection Limits Concentration Used for Screening Background Value Screening Toxicity Value (Screening Level) (n/c) Potential ARAR/TBC Value Potential ARAR/TBC Source COPC Flag (Y/N) Rationale for Selection or Deletion 599 67-64-1 Acetone ug/m3 0.537 71-43-2 Benzene ug/m3 0.757 67-66-3 Chloroform ug/m3 0.454 74-87-3 Chloromethane ug/m3 1.81 110-82-7 Cyclohexane ug/m3 4.6 75-71-8 Dichlorodifluoromethane ug/m3 1.86 141-78-6 Ethyl Acetate ug/m3 0.382 100-41-4 Ethylbenzene ug/m3 3.19 109-99-9 ~Tetrahydrofuran ug/m3 0.545 142-82-5 Heptane, N-ug/m3 18.7 67-63-0 Isopropanol ug/m3 4.56 78-93-3 Methyl Ethyl Ketone (2-Butanone)ug/m3 6.39 75-09-2 Methylene Chloride ug/m3 2.6 108-88-3 Toluene ug/m3 5.05 75-69-4 Trichlorofluoromethane ug/m3 0.767 95-63-6 Trimethylbenzene, 1,2,4-ug/m3 1.61 108-38-3 Xylene, m-ug/m3 0.647 95-47-6 Xylene, o-ug/m3 Input Form 2D Soil Gas Exposure Point Concentration Table Note: Chemicals highlighted in orange are non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals. If the chemical list is changed from a prior calculator run, remember to select "See All Chemicals" on the data output sheet or newly added chemicals will not be included in risk calculations North Carolina DEQ Risk Calculator Risk for Individual Pathways Output Form 1A Version Date: July 2022 Basis: May 2022 EPA RSL Table Site ID: 19038-15-060 Exposure Unit ID: SS-MP-12 Receptor Pathway Carcinogenic Risk Hazard Index Risk exceeded? Soil NC NC NC Groundwater Use*NC NC NC Soil NC NC NC Groundwater Use*NC NC NC Construction Worker Soil NC NC NC Soil NC NC NC Surface Water*NC NC NC Receptor Pathway Carcinogenic Risk Hazard Index Risk exceeded? Groundwater to Indoor Air NC NC NC Soil Gas to Indoor Air 2.4E-07 7.1E-03 NO Indoor Air NC NC NC Groundwater to Indoor Air NC NC NC Soil Gas to Indoor Air NC NC NC Indoor Air NC NC NC Pathway Source Source Soil NC Source Groundwater NC Source Soil NC Source Groundwater NC 3. NM = Not Modeled 4. NC = Pathway not calculated DIRECT CONTACT SOIL AND WATER CALCULATORS Resident Non-Residential Worker Recreator/Trespasser 2. * = If concentrations in groundwater exceed the NC 2L Standards or IMAC, or concentrations in surface water exceed the NC 2B Standards, appropriate remediation and/or institutional control measures will be necessary to be eligible for a risk-based closure. Surface Water Exceedence of 2B at Receptor? Exceedence of 2B at Receptor? VAPOR INTRUSION CALCULATORS Resident Non-Residential Worker CONTAMINANT MIGRATION CALCULATORS Target Receptor Concentrations Exceeded? Groundwater Exceedence of 2L at Receptor? Exceedence of 2L at Receptor? 1. If lead concentrations were entered in the exposure point concentration tables, see the individual calculator sheets for lead concentrations in comparison to screening levels. Note that lead is not included in cumulative risk calculations. Notes: North Carolina DEQ Risk Calculator DEQ Risk Calculator - Vapor Intrusion - Resident Soil Gas to Indoor Air Version Date: July 2022 Basis: May 2022 EPA RSL Table Site ID: 19038-15-060 Exposure Unit ID: SS-MP-12 CAS #Chemical Name: Soil Gas Concentration (ug/m3) Calculated Indoor Air Concentration (ug/m3) Target Indoor Air Conc. for Carcinogens @ TCR = 1E-06 Target Indoor Air Conc. for Non- Carcinogens @ THQ = 0.2 Calculated Carcinogenic Risk Calculated Non- Carcinogenic Hazard Quotient 67-64-1 Acetone 599 17.97 -- 71-43-2 Benzene 0.537 0.01611 3.6E-01 6.3E+00 4.5E-08 5.1E-04 67-66-3 Chloroform 0.757 0.02271 1.2E-01 2.0E+01 1.9E-07 2.2E-04 74-87-3 Chloromethane 0.454 0.01362 -1.9E+01 1.5E-04 110-82-7 Cyclohexane 1.81 0.0543 -1.3E+03 8.7E-06 75-71-8 Dichlorodifluoromethane 4.6 0.138 -2.1E+01 1.3E-03 141-78-6 Ethyl Acetate 1.86 0.0558 -1.5E+01 7.6E-04 100-41-4 Ethylbenzene 0.382 0.01146 1.1E+00 2.1E+02 1.0E-08 1.1E-05 109-99-9 ~Tetrahydrofuran 3.19 0.0957 -4.2E+02 4.6E-05 142-82-5 Heptane, N-0.545 0.01635 -8.3E+01 3.9E-05 67-63-0 Isopropanol 18.7 0.561 -4.2E+01 2.7E-03 78-93-3 Methyl Ethyl Ketone (2-Butanone)4.56 0.1368 -1.0E+03 2.6E-05 75-09-2 Methylene Chloride 6.39 0.1917 1.0E+02 1.3E+02 1.9E-09 3.1E-04 108-88-3 Toluene 2.6 0.078 -1.0E+03 1.5E-05 75-69-4 Trichlorofluoromethane 5.05 0.1515 -- 95-63-6 Trimethylbenzene, 1,2,4-0.767 0.02301 -1.3E+01 3.7E-04 108-38-3 Xylene, m-1.61 0.0483 -2.1E+01 4.6E-04 95-47-6 Xylene, o-0.647 0.01941 -2.1E+01 1.9E-04 Cumulative:2.4E-07 7.1E-03 All concentrations are in ug/m3 Output Form 3B Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals. North Carolina DEQ Risk Calculator Version Date: Basis: Site Name: Site Address: DEQ Section: Site ID: Exposure Unit ID: Submittal Date: Reviewed By: SS-MP-14/DUP Worst Case North Carolina Department of Environmental Quality Risk Calculator Dunavant Street Charlotte, NC DWM Brownfields Program 19038-15-060 July 2022 May 2022 EPA RSL Table Prepared By:Hart & Hickman, PC North Carolina DEQ Risk Calculator Complete Exposure Pathways Version Date: July 2022 Basis: May 2022 EPA RSL Table Site ID: 19038-15-060 Exposure Unit ID: SS-MP-14/DUP Worst Case Note: Risk output will only be calculated for complete exposure pathways. Receptor Pathway Check box if pathway complete Soil Groundwater Use Soil Groundwater Use Construction Worker Soil Soil Surface Water Groundwater to Indoor Air Soil Gas to Indoor Air Indoor Air Groundwater to Indoor Air Soil Gas to Indoor Air Indoor Air Source Soil Source Groundwater Source Soil Source Groundwater Resident Non-Residential Worker CONTAMINANT MIGRATION PATHWAYS Groundwater Surface Water Input Form 1A VAPOR INTRUSION PATHWAYS DIRECT CONTACT SOIL AND WATER PATHWAYS Resident Non-Residential Worker Recreator/Trespasser North Carolina DEQ Risk Calculator Exposure Point Concentrations Version Date: July 2022 Basis: May 2022 EPA RSL Table Site ID: 19038-15-060 Exposure Unit ID: SS-MP-14/DUP Worst Case Description of Exposure Point Concentration Selection: Exposure Point Concentration (ug/m3) Notes:CAS Number Chemical Minimum Concentration (Qualifier) Maximum Concentration (Qualifier) Units Location of Maximum Concentration Detection Frequency Range of Detection Limits Concentration Used for Screening Background Value Screening Toxicity Value (Screening Level) (n/c) Potential ARAR/TBC Value Potential ARAR/TBC Source COPC Flag (Y/N) Rationale for Selection or Deletion 24.6 67-64-1 Acetone ug/m3 0.466 71-43-2 Benzene ug/m3 2.97 75-15-0 Carbon Disulfide ug/m3 0.62 67-66-3 Chloroform ug/m3 0.368 74-87-3 Chloromethane ug/m3 1.44 110-82-7 Cyclohexane ug/m3 2.9 75-71-8 Dichlorodifluoromethane ug/m3 0.434 100-41-4 Ethylbenzene ug/m3 2.81 109-99-9 ~Tetrahydrofuran ug/m3 0.381 142-82-5 Heptane, N-ug/m3 1.53 67-63-0 Isopropanol ug/m3 3.22 78-93-3 Methyl Ethyl Ketone (2-Butanone)ug/m3 1.55 75-09-2 Methylene Chloride ug/m3 0.477 91-20-3 ~Naphthalene ug/m3 2.16 127-18-4 Tetrachloroethylene ug/m3 1.57 108-88-3 Toluene ug/m3 0.58 79-01-6 Trichloroethylene ug/m3 2.03 75-69-4 Trichlorofluoromethane ug/m3 1.08 95-63-6 Trimethylbenzene, 1,2,4-ug/m3 1.74 108-38-3 Xylene, m-ug/m3 0.79 95-47-6 Xylene, o-ug/m3 Input Form 2D Soil Gas Exposure Point Concentration Table Note: Chemicals highlighted in orange are non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals. If the chemical list is changed from a prior calculator run, remember to select "See All Chemicals" on the data output sheet or newly added chemicals will not be included in risk calculations North Carolina DEQ Risk Calculator Risk for Individual Pathways Output Form 1A Version Date: July 2022 Basis: May 2022 EPA RSL Table Site ID: 19038-15-060 Exposure Unit ID: SS-MP-14/DUP Worst Case Receptor Pathway Carcinogenic Risk Hazard Index Risk exceeded? Soil NC NC NC Groundwater Use*NC NC NC Soil NC NC NC Groundwater Use*NC NC NC Construction Worker Soil NC NC NC Soil NC NC NC Surface Water*NC NC NC Receptor Pathway Carcinogenic Risk Hazard Index Risk exceeded? Groundwater to Indoor Air NC NC NC Soil Gas to Indoor Air 4.2E-07 1.8E-02 NO Indoor Air NC NC NC Groundwater to Indoor Air NC NC NC Soil Gas to Indoor Air NC NC NC Indoor Air NC NC NC Pathway Source Source Soil NC Source Groundwater NC Source Soil NC Source Groundwater NC 3. NM = Not Modeled 4. NC = Pathway not calculated 2. * = If concentrations in groundwater exceed the NC 2L Standards or IMAC, or concentrations in surface water exceed the NC 2B Standards, appropriate remediation and/or institutional control measures will be necessary to be eligible for a risk-based closure. Surface Water Exceedence of 2B at Receptor? Exceedence of 2B at Receptor? VAPOR INTRUSION CALCULATORS Resident Non-Residential Worker CONTAMINANT MIGRATION CALCULATORS Target Receptor Concentrations Exceeded? Groundwater Exceedence of 2L at Receptor? Exceedence of 2L at Receptor? 1. If lead concentrations were entered in the exposure point concentration tables, see the individual calculator sheets for lead concentrations in comparison to screening levels. Note that lead is not included in cumulative risk calculations. Notes: DIRECT CONTACT SOIL AND WATER CALCULATORS Resident Non-Residential Worker Recreator/Trespasser North Carolina DEQ Risk Calculator DEQ Risk Calculator - Vapor Intrusion - Resident Soil Gas to Indoor Air Version Date: July 2022 Basis: May 2022 EPA RSL Table Site ID: 19038-15-060 Exposure Unit ID: SS-MP-14/DUP Worst Case CAS #Chemical Name: Soil Gas Concentration (ug/m3) Calculated Indoor Air Concentration (ug/m3) Target Indoor Air Conc. for Carcinogens @ TCR = 1E-06 Target Indoor Air Conc. for Non- Carcinogens @ THQ = 0.2 Calculated Carcinogenic Risk Calculated Non- Carcinogenic Hazard Quotient 67-64-1 Acetone 24.6 0.738 -- 71-43-2 Benzene 0.466 0.01398 3.6E-01 6.3E+00 3.9E-08 4.5E-04 75-15-0 Carbon Disulfide 2.97 0.0891 -1.5E+02 1.2E-04 67-66-3 Chloroform 0.62 0.0186 1.2E-01 2.0E+01 1.5E-07 1.8E-04 74-87-3 Chloromethane 0.368 0.01104 -1.9E+01 1.2E-04 110-82-7 Cyclohexane 1.44 0.0432 -1.3E+03 6.9E-06 75-71-8 Dichlorodifluoromethane 2.9 0.087 -2.1E+01 8.3E-04 100-41-4 Ethylbenzene 0.434 0.01302 1.1E+00 2.1E+02 1.2E-08 1.2E-05 109-99-9 ~Tetrahydrofuran 2.81 0.0843 -4.2E+02 4.0E-05 142-82-5 Heptane, N-0.381 0.01143 -8.3E+01 2.7E-05 67-63-0 Isopropanol 1.53 0.0459 -4.2E+01 2.2E-04 78-93-3 Methyl Ethyl Ketone (2-Butanone)3.22 0.0966 -1.0E+03 1.9E-05 75-09-2 Methylene Chloride 1.55 0.0465 1.0E+02 1.3E+02 4.6E-10 7.4E-05 91-20-3 ~Naphthalene 0.477 0.01431 8.3E-02 6.3E-01 1.7E-07 4.6E-03 127-18-4 Tetrachloroethylene 2.16 0.0648 1.1E+01 8.3E+00 6.0E-09 1.6E-03 108-88-3 Toluene 1.57 0.0471 -1.0E+03 9.0E-06 79-01-6 Trichloroethylene 0.58 0.0174 4.8E-01 4.2E-01 3.6E-08 8.3E-03 75-69-4 Trichlorofluoromethane 2.03 0.0609 -- 95-63-6 Trimethylbenzene, 1,2,4-1.08 0.0324 -1.3E+01 5.2E-04 108-38-3 Xylene, m-1.74 0.0522 -2.1E+01 5.0E-04 95-47-6 Xylene, o-0.79 0.0237 -2.1E+01 2.3E-04 Cumulative:4.2E-07 1.8E-02 All concentrations are in ug/m3 Output Form 3B Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals. North Carolina DEQ Risk Calculator Version Date: Basis: Site Name: Site Address: DEQ Section: Site ID: Exposure Unit ID: Submittal Date: Reviewed By: Prepared By:Hart & Hickman, PC SS-MP-15 North Carolina Department of Environmental Quality Risk Calculator Dunavant Street Charlotte, NC DWM Brownfields Program 19038-15-060 July 2022 May 2022 EPA RSL Table North Carolina DEQ Risk Calculator Complete Exposure Pathways Version Date: July 2022 Basis: May 2022 EPA RSL Table Site ID: 19038-15-060 Exposure Unit ID: SS-MP-15 Note: Risk output will only be calculated for complete exposure pathways. Receptor Pathway Check box if pathway complete Soil Groundwater Use Soil Groundwater Use Construction Worker Soil Soil Surface Water Groundwater to Indoor Air Soil Gas to Indoor Air Indoor Air Groundwater to Indoor Air Soil Gas to Indoor Air Indoor Air Source Soil Source Groundwater Source Soil Source Groundwater Input Form 1A VAPOR INTRUSION PATHWAYS DIRECT CONTACT SOIL AND WATER PATHWAYS Resident Non-Residential Worker Recreator/Trespasser Resident Non-Residential Worker CONTAMINANT MIGRATION PATHWAYS Groundwater Surface Water North Carolina DEQ Risk Calculator Exposure Point Concentrations Version Date: July 2022 Basis: May 2022 EPA RSL Table Site ID: 19038-15-060 Exposure Unit ID: SS-MP-15 Description of Exposure Point Concentration Selection: Exposure Point Concentration (ug/m3) Notes:CAS Number Chemical Minimum Concentration (Qualifier) Maximum Concentration (Qualifier) Units Location of Maximum Concentration Detection Frequency Range of Detection Limits Concentration Used for Screening Background Value Screening Toxicity Value (Screening Level) (n/c) Potential ARAR/TBC Value Potential ARAR/TBC Source COPC Flag (Y/N) Rationale for Selection or Deletion 24.2 67-64-1 Acetone ug/m3 0.364 71-43-2 Benzene ug/m3 1.31 75-15-0 Carbon Disulfide ug/m3 0.698 56-23-5 Carbon Tetrachloride ug/m3 6.19 110-82-7 Cyclohexane ug/m3 3.29 75-71-8 Dichlorodifluoromethane ug/m3 0.782 100-41-4 Ethylbenzene ug/m3 2.84 109-99-9 ~Tetrahydrofuran ug/m3 0.916 110-54-3 Hexane, N-ug/m3 3.98 591-78-6 Hexanone, 2-ug/m3 15.9 67-63-0 Isopropanol ug/m3 2.63 78-93-3 Methyl Ethyl Ketone (2-Butanone)ug/m3 2.02 108-10-1 Methyl Isobutyl Ketone (4-methyl-2-pentanone)ug/m3 1.52 75-09-2 Methylene Chloride ug/m3 4.6 91-20-3 ~Naphthalene ug/m3 0.886 100-42-5 Styrene ug/m3 0.57 127-18-4 Tetrachloroethylene ug/m3 2.4 108-88-3 Toluene ug/m3 0.766 76-13-1 Trichloro-1,2,2-trifluoroethane, 1,1,2-ug/m3 1.76 75-69-4 Trichlorofluoromethane ug/m3 6.58 95-63-6 Trimethylbenzene, 1,2,4-ug/m3 2.42 108-67-8 Trimethylbenzene, 1,3,5-ug/m3 3.23 108-38-3 Xylene, m-ug/m3 1.74 95-47-6 Xylene, o-ug/m3 Input Form 2D Soil Gas Exposure Point Concentration Table Note: Chemicals highlighted in orange are non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals. If the chemical list is changed from a prior calculator run, remember to select "See All Chemicals" on the data output sheet or newly added chemicals will not be included in risk calculations North Carolina DEQ Risk Calculator Risk for Individual Pathways Output Form 1A Version Date: July 2022 Basis: May 2022 EPA RSL Table Site ID: 19038-15-060 Exposure Unit ID: SS-MP-15 Receptor Pathway Carcinogenic Risk Hazard Index Risk exceeded? Soil NC NC NC Groundwater Use*NC NC NC Soil NC NC NC Groundwater Use*NC NC NC Construction Worker Soil NC NC NC Soil NC NC NC Surface Water*NC NC NC Receptor Pathway Carcinogenic Risk Hazard Index Risk exceeded? Groundwater to Indoor Air NC NC NC Soil Gas to Indoor Air 1.8E-06 5.8E-02 NO Indoor Air NC NC NC Groundwater to Indoor Air NC NC NC Soil Gas to Indoor Air NC NC NC Indoor Air NC NC NC Pathway Source Source Soil NC Source Groundwater NC Source Soil NC Source Groundwater NC 3. NM = Not Modeled 4. NC = Pathway not calculated DIRECT CONTACT SOIL AND WATER CALCULATORS Resident Non-Residential Worker Recreator/Trespasser 2. * = If concentrations in groundwater exceed the NC 2L Standards or IMAC, or concentrations in surface water exceed the NC 2B Standards, appropriate remediation and/or institutional control measures will be necessary to be eligible for a risk-based closure. Surface Water Exceedence of 2B at Receptor? Exceedence of 2B at Receptor? VAPOR INTRUSION CALCULATORS Resident Non-Residential Worker CONTAMINANT MIGRATION CALCULATORS Target Receptor Concentrations Exceeded? Groundwater Exceedence of 2L at Receptor? Exceedence of 2L at Receptor? 1. If lead concentrations were entered in the exposure point concentration tables, see the individual calculator sheets for lead concentrations in comparison to screening levels. Note that lead is not included in cumulative risk calculations. Notes: North Carolina DEQ Risk Calculator DEQ Risk Calculator - Vapor Intrusion - Resident Soil Gas to Indoor Air Version Date: July 2022 Basis: May 2022 EPA RSL Table Site ID: 19038-15-060 Exposure Unit ID: SS-MP-15 CAS #Chemical Name: Soil Gas Concentration (ug/m3) Calculated Indoor Air Concentration (ug/m3) Target Indoor Air Conc. for Carcinogens @ TCR = 1E-06 Target Indoor Air Conc. for Non- Carcinogens @ THQ = 0.2 Calculated Carcinogenic Risk Calculated Non- Carcinogenic Hazard Quotient 67-64-1 Acetone 24.2 0.726 -- 71-43-2 Benzene 0.364 0.01092 3.6E-01 6.3E+00 3.0E-08 3.5E-04 75-15-0 Carbon Disulfide 1.31 0.0393 -1.5E+02 5.4E-05 56-23-5 Carbon Tetrachloride 0.698 0.02094 4.7E-01 2.1E+01 4.5E-08 2.0E-04 110-82-7 Cyclohexane 6.19 0.1857 -1.3E+03 3.0E-05 75-71-8 Dichlorodifluoromethane 3.29 0.0987 -2.1E+01 9.5E-04 100-41-4 Ethylbenzene 0.782 0.02346 1.1E+00 2.1E+02 2.1E-08 2.2E-05 109-99-9 ~Tetrahydrofuran 2.84 0.0852 -4.2E+02 4.1E-05 110-54-3 Hexane, N-0.916 0.02748 -1.5E+02 3.8E-05 591-78-6 Hexanone, 2-3.98 0.1194 -6.3E+00 3.8E-03 67-63-0 Isopropanol 15.9 0.477 -4.2E+01 2.3E-03 78-93-3 Methyl Ethyl Ketone (2-Butanone)2.63 0.0789 -1.0E+03 1.5E-05 108-10-1 Methyl Isobutyl Ketone (4-methyl-2-pentanone)2.02 0.0606 -6.3E+02 1.9E-05 75-09-2 Methylene Chloride 1.52 0.0456 1.0E+02 1.3E+02 4.5E-10 7.3E-05 91-20-3 ~Naphthalene 4.6 0.138 8.3E-02 6.3E-01 1.7E-06 4.4E-02 100-42-5 Styrene 0.886 0.02658 -2.1E+02 2.5E-05 127-18-4 Tetrachloroethylene 0.57 0.0171 1.1E+01 8.3E+00 1.6E-09 4.1E-04 108-88-3 Toluene 2.4 0.072 -1.0E+03 1.4E-05 76-13-1 Trichloro-1,2,2-trifluoroethane, 1,1,2-0.766 0.02298 -1.0E+03 4.4E-06 75-69-4 Trichlorofluoromethane 1.76 0.0528 -- 95-63-6 Trimethylbenzene, 1,2,4-6.58 0.1974 -1.3E+01 3.2E-03 108-67-8 Trimethylbenzene, 1,3,5-2.42 0.0726 -1.3E+01 1.2E-03 108-38-3 Xylene, m-3.23 0.0969 -2.1E+01 9.3E-04 95-47-6 Xylene, o-1.74 0.0522 -2.1E+01 5.0E-04 Cumulative:1.8E-06 5.8E-02 All concentrations are in ug/m3 Output Form 3B Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals. North Carolina DEQ Risk Calculator Version Date: Basis: Site Name: Site Address: DEQ Section: Site ID: Exposure Unit ID: Submittal Date: Reviewed By: Prepared By:Hart & Hickman, PC SS-MP-18 North Carolina Department of Environmental Quality Risk Calculator Dunavant Street Charlotte, NC DWM Brownfields Program 19038-15-060 July 2022 May 2022 EPA RSL Table North Carolina DEQ Risk Calculator Complete Exposure Pathways Version Date: July 2022 Basis: May 2022 EPA RSL Table Site ID: 19038-15-060 Exposure Unit ID: SS-MP-18 Note: Risk output will only be calculated for complete exposure pathways. Receptor Pathway Check box if pathway complete Soil Groundwater Use Soil Groundwater Use Construction Worker Soil Soil Surface Water Groundwater to Indoor Air Soil Gas to Indoor Air Indoor Air Groundwater to Indoor Air Soil Gas to Indoor Air Indoor Air Source Soil Source Groundwater Source Soil Source Groundwater Input Form 1A VAPOR INTRUSION PATHWAYS DIRECT CONTACT SOIL AND WATER PATHWAYS Resident Non-Residential Worker Recreator/Trespasser Resident Non-Residential Worker CONTAMINANT MIGRATION PATHWAYS Groundwater Surface Water North Carolina DEQ Risk Calculator Exposure Point Concentrations Version Date: July 2022 Basis: May 2022 EPA RSL Table Site ID: 19038-15-060 Exposure Unit ID: SS-MP-18 Description of Exposure Point Concentration Selection: Exposure Point Concentration (ug/m3) Notes:CAS Number Chemical Minimum Concentration (Qualifier) Maximum Concentration (Qualifier) Units Location of Maximum Concentration Detection Frequency Range of Detection Limits Concentration Used for Screening Background Value Screening Toxicity Value (Screening Level) (n/c) Potential ARAR/TBC Value Potential ARAR/TBC Source COPC Flag (Y/N) Rationale for Selection or Deletion 11 67-64-1 Acetone ug/m3 0.313 71-43-2 Benzene ug/m3 0.61 75-15-0 Carbon Disulfide ug/m3 0.717 56-23-5 Carbon Tetrachloride ug/m3 0.757 67-66-3 Chloroform ug/m3 9.54 110-82-7 Cyclohexane ug/m3 3.47 75-71-8 Dichlorodifluoromethane ug/m3 4.23 100-41-4 Ethylbenzene ug/m3 9.65 109-99-9 ~Tetrahydrofuran ug/m3 0.412 110-54-3 Hexane, N-ug/m3 2.64 67-63-0 Isopropanol ug/m3 2.96 78-93-3 Methyl Ethyl Ketone (2-Butanone)ug/m3 0.854 75-09-2 Methylene Chloride ug/m3 4.89 91-20-3 ~Naphthalene ug/m3 2.49 108-88-3 Toluene ug/m3 0.72 76-13-1 Trichloro-1,2,2-trifluoroethane, 1,1,2-ug/m3 2.04 75-69-4 Trichlorofluoromethane ug/m3 1.17 95-63-6 Trimethylbenzene, 1,2,4-ug/m3 17.5 108-38-3 Xylene, m-ug/m3 3.08 95-47-6 Xylene, o-ug/m3 Input Form 2D Soil Gas Exposure Point Concentration Table Note: Chemicals highlighted in orange are non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals. If the chemical list is changed from a prior calculator run, remember to select "See All Chemicals" on the data output sheet or newly added chemicals will not be included in risk calculations North Carolina DEQ Risk Calculator Risk for Individual Pathways Output Form 1A Version Date: July 2022 Basis: May 2022 EPA RSL Table Site ID: 19038-15-060 Exposure Unit ID: SS-MP-18 Receptor Pathway Carcinogenic Risk Hazard Index Risk exceeded? Soil NC NC NC Groundwater Use*NC NC NC Soil NC NC NC Groundwater Use*NC NC NC Construction Worker Soil NC NC NC Soil NC NC NC Surface Water*NC NC NC Receptor Pathway Carcinogenic Risk Hazard Index Risk exceeded? Groundwater to Indoor Air NC NC NC Soil Gas to Indoor Air 2.1E-06 5.6E-02 NO Indoor Air NC NC NC Groundwater to Indoor Air NC NC NC Soil Gas to Indoor Air NC NC NC Indoor Air NC NC NC Pathway Source Source Soil NC Source Groundwater NC Source Soil NC Source Groundwater NC 3. NM = Not Modeled 4. NC = Pathway not calculated DIRECT CONTACT SOIL AND WATER CALCULATORS Resident Non-Residential Worker Recreator/Trespasser 2. * = If concentrations in groundwater exceed the NC 2L Standards or IMAC, or concentrations in surface water exceed the NC 2B Standards, appropriate remediation and/or institutional control measures will be necessary to be eligible for a risk-based closure. Surface Water Exceedence of 2B at Receptor? Exceedence of 2B at Receptor? VAPOR INTRUSION CALCULATORS Resident Non-Residential Worker CONTAMINANT MIGRATION CALCULATORS Target Receptor Concentrations Exceeded? Groundwater Exceedence of 2L at Receptor? Exceedence of 2L at Receptor? 1. If lead concentrations were entered in the exposure point concentration tables, see the individual calculator sheets for lead concentrations in comparison to screening levels. Note that lead is not included in cumulative risk calculations. Notes: North Carolina DEQ Risk Calculator DEQ Risk Calculator - Vapor Intrusion - Resident Soil Gas to Indoor Air Version Date: July 2022 Basis: May 2022 EPA RSL Table Site ID: 19038-15-060 Exposure Unit ID: SS-MP-18 CAS #Chemical Name: Soil Gas Concentration (ug/m3) Calculated Indoor Air Concentration (ug/m3) Target Indoor Air Conc. for Carcinogens @ TCR = 1E-06 Target Indoor Air Conc. for Non- Carcinogens @ THQ = 0.2 Calculated Carcinogenic Risk Calculated Non- Carcinogenic Hazard Quotient 67-64-1 Acetone 11 0.33 -- 71-43-2 Benzene 0.313 0.00939 3.6E-01 6.3E+00 2.6E-08 3.0E-04 75-15-0 Carbon Disulfide 0.61 0.0183 -1.5E+02 2.5E-05 56-23-5 Carbon Tetrachloride 0.717 0.02151 4.7E-01 2.1E+01 4.6E-08 2.1E-04 67-66-3 Chloroform 0.757 0.02271 1.2E-01 2.0E+01 1.9E-07 2.2E-04 110-82-7 Cyclohexane 9.54 0.2862 -1.3E+03 4.6E-05 75-71-8 Dichlorodifluoromethane 3.47 0.1041 -2.1E+01 1.0E-03 100-41-4 Ethylbenzene 4.23 0.1269 1.1E+00 2.1E+02 1.1E-07 1.2E-04 109-99-9 ~Tetrahydrofuran 9.65 0.2895 -4.2E+02 1.4E-04 110-54-3 Hexane, N-0.412 0.01236 -1.5E+02 1.7E-05 67-63-0 Isopropanol 2.64 0.0792 -4.2E+01 3.8E-04 78-93-3 Methyl Ethyl Ketone (2-Butanone)2.96 0.0888 -1.0E+03 1.7E-05 75-09-2 Methylene Chloride 0.854 0.02562 1.0E+02 1.3E+02 2.5E-10 4.1E-05 91-20-3 ~Naphthalene 4.89 0.1467 8.3E-02 6.3E-01 1.8E-06 4.7E-02 108-88-3 Toluene 2.49 0.0747 -1.0E+03 1.4E-05 76-13-1 Trichloro-1,2,2-trifluoroethane, 1,1,2-0.72 0.0216 -1.0E+03 4.1E-06 75-69-4 Trichlorofluoromethane 2.04 0.0612 -- 95-63-6 Trimethylbenzene, 1,2,4-1.17 0.0351 -1.3E+01 5.6E-04 108-38-3 Xylene, m-17.5 0.525 -2.1E+01 5.0E-03 95-47-6 Xylene, o-3.08 0.0924 -2.1E+01 8.9E-04 Cumulative:2.1E-06 5.6E-02 All concentrations are in ug/m3 Output Form 3B Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals. North Carolina DEQ Risk Calculator Version Date: Basis: Site Name: Site Address: DEQ Section: Site ID: Exposure Unit ID: Submittal Date: Reviewed By: Prepared By:Hart & Hickman, PC IA-B-1/IA-B-DUP Modified North Carolina Department of Environmental Quality Risk Calculator Dunavant Street Charlotte, NC DWM Brownfields Program 19038-15-060 July 2022 May 2022 EPA RSL Table North Carolina DEQ Risk Calculator Complete Exposure Pathways Version Date: July 2022 Basis: May 2022 EPA RSL Table Site ID: 19038-15-060 Exposure Unit ID: IA-B-1/IA-B-DUP Modified Note: Risk output will only be calculated for complete exposure pathways. Receptor Pathway Check box if pathway complete Soil Groundwater Use Soil Groundwater Use Construction Worker Soil Soil Surface Water Groundwater to Indoor Air Soil Gas to Indoor Air Indoor Air Groundwater to Indoor Air Soil Gas to Indoor Air Indoor Air Source Soil Source Groundwater Source Soil Source Groundwater Input Form 1A VAPOR INTRUSION PATHWAYS DIRECT CONTACT SOIL AND WATER PATHWAYS Resident Non-Residential Worker Recreator/Trespasser Resident Non-Residential Worker CONTAMINANT MIGRATION PATHWAYS Groundwater Surface Water North Carolina DEQ Risk Calculator Exposure Point Concentrations Version Date: July 2022 Basis: May 2022 EPA RSL Table Site ID: 19038-15-060 Exposure Unit ID: IA-B-1/IA-B-DUP Modified Description of Exposure Point Concentration Selection: Exposure Point Concentration (ug/m3) Notes:CAS Number Chemical Minimum Concentration (Qualifier) Maximum Concentration (Qualifier) Units Location of Maximum Concentration Detection Frequency Range of Detection Limits Concentration Used for Screening Background Value Screening Toxicity Value (Screening Level) (n/c) Potential ARAR/TBC Value Potential ARAR/TBC Source COPC Flag (Y/N) Rationale for Selection or Deletion 567 67-64-1 Acetone ug/m3 0.418 71-43-2 Benzene ug/m3 0.624 74-87-3 Chloromethane ug/m3 2.64 75-71-8 Dichlorodifluoromethane ug/m3 7.25 141-78-6 Ethyl Acetate ug/m3 0.36 100-41-4 Ethylbenzene ug/m3 0.655 109-99-9 ~Tetrahydrofuran ug/m3 0.738 142-82-5 Heptane, N-ug/m3 3.37 78-93-3 Methyl Ethyl Ketone (2-Butanone)ug/m3 1.41 75-09-2 Methylene Chloride ug/m3 2.09 127-18-4 Tetrachloroethylene ug/m3 1.51 108-88-3 Toluene ug/m3 2.17 75-69-4 Trichlorofluoromethane ug/m3 1.14 108-38-3 Xylene, m-ug/m3 0.595 95-47-6 Xylene, o-ug/m3 Input Form 2E Indoor Air Exposure Point Concentration Table Note: Chemicals highlighted in orange are non-volatile chemicals. Risks are calculated for these chemicals if indoor air concentrations are entered and indoor air screening levels have been established, but it should be noted that detections of these chemicals are likely not associated with vapor intrusion.If the chemical list is changed from a prior calculator run, remember to select "See All Chemicals" on the data output sheet or newly added chemicals will not be included in risk calculations North Carolina DEQ Risk Calculator Risk for Individual Pathways Output Form 1A Version Date: July 2022 Basis: May 2022 EPA RSL Table Site ID: 19038-15-060 Exposure Unit ID: IA-B-1/IA-B-DUP Modified Receptor Pathway Carcinogenic Risk Hazard Index Risk exceeded? Soil NC NC NC Groundwater Use*NC NC NC Soil NC NC NC Groundwater Use*NC NC NC Construction Worker Soil NC NC NC Soil NC NC NC Surface Water*NC NC NC Receptor Pathway Carcinogenic Risk Hazard Index Risk exceeded? Groundwater to Indoor Air NC NC NC Soil Gas to Indoor Air NC NC NC Indoor Air 1.7E-06 2.2E-01 NO Groundwater to Indoor Air NC NC NC Soil Gas to Indoor Air NC NC NC Indoor Air 3.8E-07 5.2E-02 NO Pathway Source Source Soil NC Source Groundwater NC Source Soil NC Source Groundwater NC 3. NM = Not Modeled 4. NC = Pathway not calculated DIRECT CONTACT SOIL AND WATER CALCULATORS Resident Non-Residential Worker Recreator/Trespasser 2. * = If concentrations in groundwater exceed the NC 2L Standards or IMAC, or concentrations in surface water exceed the NC 2B Standards, appropriate remediation and/or institutional control measures will be necessary to be eligible for a risk-based closure. Surface Water Exceedence of 2B at Receptor? Exceedence of 2B at Receptor? VAPOR INTRUSION CALCULATORS Resident Non-Residential Worker CONTAMINANT MIGRATION CALCULATORS Target Receptor Concentrations Exceeded? Groundwater Exceedence of 2L at Receptor? Exceedence of 2L at Receptor? 1. If lead concentrations were entered in the exposure point concentration tables, see the individual calculator sheets for lead concentrations in comparison to screening levels. Note that lead is not included in cumulative risk calculations. Notes: North Carolina DEQ Risk Calculator DEQ Risk Calculator - Vapor Intrusion - Resident Indoor Air Version Date: July 2022 Basis: May 2022 EPA RSL Table Site ID: 19038-15-060 Exposure Unit ID: IA-B-1/IA-B-DUP Modified CAS #Chemical Name: Indoor Air Concentration (ug/m3) Target Indoor Air Conc. for Carcinogens @ TCR = 1E-06 Target Indoor Air Conc. for Non- Carcinogens @ THQ = 0.2 Calculated Carcinogenic Risk Calculated Non-Carcinogenic Hazard Quotient 67-64-1 Acetone 567 -- 71-43-2 Benzene 0.418 3.6E-01 6.3E+00 1.2E-06 1.3E-02 74-87-3 Chloromethane 0.624 -1.9E+01 6.6E-0375-71-8 Dichlorodifluoromethane 2.64 -2.1E+01 2.5E-02 141-78-6 Ethyl Acetate 7.25 -1.5E+01 9.9E-02 100-41-4 Ethylbenzene 0.36 1.1E+00 2.1E+02 3.2E-07 3.5E-04 109-99-9 ~Tetrahydrofuran 0.655 -4.2E+02 3.1E-04 142-82-5 Heptane, N-0.738 -8.3E+01 1.8E-03 78-93-3 Methyl Ethyl Ketone (2-Butanone)3.37 -1.0E+03 6.5E-04 75-09-2 Methylene Chloride 1.41 1.0E+02 1.3E+02 1.4E-08 2.3E-03 127-18-4 Tetrachloroethylene 2.09 1.1E+01 8.3E+00 1.9E-07 5.0E-02 108-88-3 Toluene 1.51 -1.0E+03 2.9E-04 75-69-4 Trichlorofluoromethane 2.17 --108-38-3 Xylene, m-1.14 -2.1E+01 1.1E-02 95-47-6 Xylene, o-0.595 -2.1E+01 5.7E-03 Cumulative:1.7E-06 2.2E-01 All concentrations are in ug/m3 Output Form 3C ** - Note that the EPA has no consensus on reference dose or cancer slope factor values for lead, therefore it is not possible to calculate carcinogenic risk or hazard quotient. Lead concentrations are compared to the National Ambient Air Quality Standard of 0.15 μg/m3. Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Risks are calculated for these values if indoor air concentrations are entered and indoor air screening levels have been established, but it should be noted that detections of these chemicals are likely not associated with vapor intrusion. North Carolina DEQ Risk Calculator DEQ Risk Calculator - Vapor Intrusion - Non-Residential Worker Indoor Air Version Date: July 2022 Basis: May 2022 EPA RSL Table Site ID: 19038-15-060 Exposure Unit ID: IA-B-1/IA-B-DUP Modified CAS #Chemical Name: Indoor Air Concentration (ug/m3) Target Indoor Air Conc. for Carcinogens @ TCR = 1E-06 Target Indoor Air Conc. for Non- Carcinogens @ THQ = 0.2 Calculated Carcinogenic Risk Calculated Non- Carcinogenic Hazard Quotient 67-64-1 Acetone 567 -- 71-43-2 Benzene 0.418 1.6E+00 2.6E+01 2.7E-07 3.2E-0374-87-3 Chloromethane 0.624 -7.9E+01 1.6E-03 75-71-8 Dichlorodifluoromethane 2.64 -8.8E+01 6.0E-03 141-78-6 Ethyl Acetate 7.25 -6.1E+01 2.4E-02100-41-4 Ethylbenzene 0.36 4.9E+00 8.8E+02 7.3E-08 8.2E-05 109-99-9 ~Tetrahydrofuran 0.655 -1.8E+03 7.5E-05 142-82-5 Heptane, N-0.738 -3.5E+02 4.2E-04 78-93-3 Methyl Ethyl Ketone (2-Butanone)3.37 -4.4E+03 1.5E-0475-09-2 Methylene Chloride 1.41 1.2E+03 5.3E+02 1.1E-09 5.4E-04 127-18-4 Tetrachloroethylene 2.09 4.7E+01 3.5E+01 4.4E-08 1.2E-02 108-88-3 Toluene 1.51 -4.4E+03 6.9E-05 75-69-4 Trichlorofluoromethane 2.17 -- 108-38-3 Xylene, m-1.14 -8.8E+01 2.6E-0395-47-6 Xylene, o-0.595 -8.8E+01 1.4E-03 Cumulative:3.8E-07 5.2E-02 All concentrations are in ug/m3 Output Form 3F ** - Note that the EPA has no consensus on reference dose or cancer slope factor values for lead, therefore it is not possible to calculate carcinogenic risk or hazard quotient. Lead concentrations are compared to the National Ambient Air Quality Standard of 0.15 μg/m3. Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Risks are calculated for these values if indoor air concentrations are entered and indoor air screening levels have been established, but it should be noted that detections of these chemicals are likely not associated with vapor intrusion. North Carolina DEQ Risk Calculator Version Date: Basis: Site Name: Site Address: DEQ Section: Site ID: Exposure Unit ID: Submittal Date: Reviewed By: 6/9/2022 Prepared By:Hart & Hickman, PC IA-B-1/IA-B-DUP North Carolina Department of Environmental Quality Risk Calculator Dunavant Street Charlotte, NC DWM Brownfields Program 19038-15-060 July 2022 May 2022 EPA RSL Table North Carolina DEQ Risk Calculator Complete Exposure Pathways Version Date: July 2022 Basis: May 2022 EPA RSL Table Site ID: 19038-15-060 Exposure Unit ID: IA-B-1/IA-B-DUP Note: Risk output will only be calculated for complete exposure pathways. Receptor Pathway Check box if pathway complete Soil Groundwater Use Soil Groundwater Use Construction Worker Soil Soil Surface Water Groundwater to Indoor Air Soil Gas to Indoor Air Indoor Air Groundwater to Indoor Air Soil Gas to Indoor Air Indoor Air Source Soil Source Groundwater Source Soil Source Groundwater Input Form 1A VAPOR INTRUSION PATHWAYS DIRECT CONTACT SOIL AND WATER PATHWAYS Resident Non-Residential Worker Recreator/Trespasser Resident Non-Residential Worker CONTAMINANT MIGRATION PATHWAYS Groundwater Surface Water North Carolina DEQ Risk Calculator Exposure Point Concentrations Version Date: July 2022 Basis: May 2022 EPA RSL Table Site ID: 19038-15-060 Exposure Unit ID: IA-B-1/IA-B-DUP Description of Exposure Point Concentration Selection: Exposure Point Concentration (ug/m3) Notes:CAS Number Chemical Minimum Concentration (Qualifier) Maximum Concentration (Qualifier) Units Location of Maximum Concentration Detection Frequency Range of Detection Limits Concentration Used for Screening Background Value Screening Toxicity Value (Screening Level) (n/c) Potential ARAR/TBC Value Potential ARAR/TBC Source COPC Flag (Y/N) Rationale for Selection or Deletion 567 67-64-1 Acetone ug/m3 0.418 71-43-2 Benzene ug/m3 0.624 74-87-3 Chloromethane ug/m3 2.64 75-71-8 Dichlorodifluoromethane ug/m3 7.25 141-78-6 Ethyl Acetate ug/m3 0.36 100-41-4 Ethylbenzene ug/m3 0.655 109-99-9 ~Tetrahydrofuran ug/m3 0.738 142-82-5 Heptane, N-ug/m3 62.3 67-63-0 Isopropanol ug/m3 3.37 78-93-3 Methyl Ethyl Ketone (2-Butanone)ug/m3 1.41 75-09-2 Methylene Chloride ug/m3 2.09 127-18-4 Tetrachloroethylene ug/m3 1.51 108-88-3 Toluene ug/m3 2.17 75-69-4 Trichlorofluoromethane ug/m3 1.14 108-38-3 Xylene, m-ug/m3 0.595 95-47-6 Xylene, o-ug/m3 Input Form 2E Indoor Air Exposure Point Concentration Table Note: Chemicals highlighted in orange are non-volatile chemicals. Risks are calculated for these chemicals if indoor air concentrations are entered and indoor air screening levels have been established, but it should be noted that detections of these chemicals are likely not associated with vapor intrusion.If the chemical list is changed from a prior calculator run, remember to select "See All Chemicals" on the data output sheet or newly added chemicals will not be included in risk calculations North Carolina DEQ Risk Calculator Risk for Individual Pathways Output Form 1A Version Date: July 2022 Basis: May 2022 EPA RSL Table Site ID: 19038-15-060 Exposure Unit ID: IA-B-1/IA-B-DUP Receptor Pathway Carcinogenic Risk Hazard Index Risk exceeded? Soil NC NC NC Groundwater Use*NC NC NC Soil NC NC NC Groundwater Use*NC NC NC Construction Worker Soil NC NC NC Soil NC NC NC Surface Water*NC NC NC Receptor Pathway Carcinogenic Risk Hazard Index Risk exceeded? Groundwater to Indoor Air NC NC NC Soil Gas to Indoor Air NC NC NC Indoor Air 1.7E-06 5.2E-01 NO Groundwater to Indoor Air NC NC NC Soil Gas to Indoor Air NC NC NC Indoor Air 3.8E-07 1.2E-01 NO Pathway Source Source Soil NC Source Groundwater NC Source Soil NC Source Groundwater NC 3. NM = Not Modeled 4. NC = Pathway not calculated DIRECT CONTACT SOIL AND WATER CALCULATORS Resident Non-Residential Worker Recreator/Trespasser 2. * = If concentrations in groundwater exceed the NC 2L Standards or IMAC, or concentrations in surface water exceed the NC 2B Standards, appropriate remediation and/or institutional control measures will be necessary to be eligible for a risk-based closure. Surface Water Exceedence of 2B at Receptor? Exceedence of 2B at Receptor? VAPOR INTRUSION CALCULATORS Resident Non-Residential Worker CONTAMINANT MIGRATION CALCULATORS Target Receptor Concentrations Exceeded? Groundwater Exceedence of 2L at Receptor? Exceedence of 2L at Receptor? 1. If lead concentrations were entered in the exposure point concentration tables, see the individual calculator sheets for lead concentrations in comparison to screening levels. Note that lead is not included in cumulative risk calculations. Notes: North Carolina DEQ Risk Calculator DEQ Risk Calculator - Vapor Intrusion - Resident Indoor Air Version Date: July 2022 Basis: May 2022 EPA RSL Table Site ID: 19038-15-060 Exposure Unit ID: IA-B-1/IA-B-DUP CAS #Chemical Name: Indoor Air Concentration (ug/m3) Target Indoor Air Conc. for Carcinogens @ TCR = 1E-06 Target Indoor Air Conc. for Non- Carcinogens @ THQ = 0.2 Calculated Carcinogenic Risk Calculated Non-Carcinogenic Hazard Quotient 67-64-1 Acetone 567 -- 71-43-2 Benzene 0.418 3.6E-01 6.3E+00 1.2E-06 1.3E-02 74-87-3 Chloromethane 0.624 -1.9E+01 6.6E-0375-71-8 Dichlorodifluoromethane 2.64 -2.1E+01 2.5E-02 141-78-6 Ethyl Acetate 7.25 -1.5E+01 9.9E-02 100-41-4 Ethylbenzene 0.36 1.1E+00 2.1E+02 3.2E-07 3.5E-04 109-99-9 ~Tetrahydrofuran 0.655 -4.2E+02 3.1E-04 142-82-5 Heptane, N-0.738 -8.3E+01 1.8E-03 67-63-0 Isopropanol 62.3 -4.2E+01 3.0E-0178-93-3 Methyl Ethyl Ketone (2-Butanone)3.37 -1.0E+03 6.5E-04 75-09-2 Methylene Chloride 1.41 1.0E+02 1.3E+02 1.4E-08 2.3E-03 127-18-4 Tetrachloroethylene 2.09 1.1E+01 8.3E+00 1.9E-07 5.0E-02 108-88-3 Toluene 1.51 -1.0E+03 2.9E-0475-69-4 Trichlorofluoromethane 2.17 -- 108-38-3 Xylene, m-1.14 -2.1E+01 1.1E-02 95-47-6 Xylene, o-0.595 -2.1E+01 5.7E-03 Cumulative:1.7E-06 5.2E-01 All concentrations are in ug/m3 Output Form 3C ** - Note that the EPA has no consensus on reference dose or cancer slope factor values for lead, therefore it is not possible to calculate carcinogenic risk or hazard quotient. Lead concentrations are compared to the National Ambient Air Quality Standard of 0.15 μg/m3. Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Risks are calculated for these values if indoor air concentrations are entered and indoor air screening levels have been established, but it should be noted that detections of these chemicals are likely not associated with vapor intrusion. North Carolina DEQ Risk Calculator DEQ Risk Calculator - Vapor Intrusion - Non-Residential Worker Indoor Air Version Date: July 2022 Basis: May 2022 EPA RSL Table Site ID: 19038-15-060 Exposure Unit ID: IA-B-1/IA-B-DUP CAS #Chemical Name: Indoor Air Concentration (ug/m3) Target Indoor Air Conc. for Carcinogens @ TCR = 1E-06 Target Indoor Air Conc. for Non- Carcinogens @ THQ = 0.2 Calculated Carcinogenic Risk Calculated Non- Carcinogenic Hazard Quotient 67-64-1 Acetone 567 -- 71-43-2 Benzene 0.418 1.6E+00 2.6E+01 2.7E-07 3.2E-0374-87-3 Chloromethane 0.624 -7.9E+01 1.6E-03 75-71-8 Dichlorodifluoromethane 2.64 -8.8E+01 6.0E-03 141-78-6 Ethyl Acetate 7.25 -6.1E+01 2.4E-02100-41-4 Ethylbenzene 0.36 4.9E+00 8.8E+02 7.3E-08 8.2E-05 109-99-9 ~Tetrahydrofuran 0.655 -1.8E+03 7.5E-05 142-82-5 Heptane, N-0.738 -3.5E+02 4.2E-04 67-63-0 Isopropanol 62.3 -1.8E+02 7.1E-0278-93-3 Methyl Ethyl Ketone (2-Butanone)3.37 -4.4E+03 1.5E-04 75-09-2 Methylene Chloride 1.41 1.2E+03 5.3E+02 1.1E-09 5.4E-04 127-18-4 Tetrachloroethylene 2.09 4.7E+01 3.5E+01 4.4E-08 1.2E-02 108-88-3 Toluene 1.51 -4.4E+03 6.9E-05 75-69-4 Trichlorofluoromethane 2.17 --108-38-3 Xylene, m-1.14 -8.8E+01 2.6E-03 95-47-6 Xylene, o-0.595 -8.8E+01 1.4E-03 Cumulative:3.8E-07 1.2E-01 All concentrations are in ug/m3 Output Form 3F ** - Note that the EPA has no consensus on reference dose or cancer slope factor values for lead, therefore it is not possible to calculate carcinogenic risk or hazard quotient. Lead concentrations are compared to the National Ambient Air Quality Standard of 0.15 μg/m3. Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Risks are calculated for these values if indoor air concentrations are entered and indoor air screening levels have been established, but it should be noted that detections of these chemicals are likely not associated with vapor intrusion. North Carolina DEQ Risk Calculator Version Date: Basis: Site Name: Site Address: DEQ Section: Site ID: Exposure Unit ID: Submittal Date: Reviewed By: Prepared By:Hart & Hickman, PC IA-B-2 North Carolina Department of Environmental Quality Risk Calculator Dunavant Street Charlotte, NC DWM Brownfields Program 19038-15-060 July 2022 May 2022 EPA RSL Table North Carolina DEQ Risk Calculator Complete Exposure Pathways Version Date: July 2022 Basis: May 2022 EPA RSL Table Site ID: 19038-15-060 Exposure Unit ID: IA-B-2 Note: Risk output will only be calculated for complete exposure pathways. Receptor Pathway Check box if pathway complete Soil Groundwater Use Soil Groundwater Use Construction Worker Soil Soil Surface Water Groundwater to Indoor Air Soil Gas to Indoor Air Indoor Air Groundwater to Indoor Air Soil Gas to Indoor Air Indoor Air Source Soil Source Groundwater Source Soil Source Groundwater Input Form 1A VAPOR INTRUSION PATHWAYS DIRECT CONTACT SOIL AND WATER PATHWAYS Resident Non-Residential Worker Recreator/Trespasser Resident Non-Residential Worker CONTAMINANT MIGRATION PATHWAYS Groundwater Surface Water North Carolina DEQ Risk Calculator Exposure Point Concentrations Version Date: July 2022 Basis: May 2022 EPA RSL Table Site ID: 19038-15-060 Exposure Unit ID: IA-B-2 Description of Exposure Point Concentration Selection: Exposure Point Concentration (ug/m3) Notes:CAS Number Chemical Minimum Concentration (Qualifier) Maximum Concentration (Qualifier) Units Location of Maximum Concentration Detection Frequency Range of Detection Limits Concentration Used for Screening Background Value Screening Toxicity Value (Screening Level) (n/c) Potential ARAR/TBC Value Potential ARAR/TBC Source COPC Flag (Y/N) Rationale for Selection or Deletion 5000 67-64-1 Acetone ug/m3 0.418 71-43-2 Benzene ug/m3 0.615 67-66-3 Chloroform ug/m3 0.613 74-87-3 Chloromethane ug/m3 2.5 75-71-8 Dichlorodifluoromethane ug/m3 52.4 141-78-6 Ethyl Acetate ug/m3 0.608 100-41-4 Ethylbenzene ug/m3 1.23 142-82-5 Heptane, N-ug/m3 770 67-63-0 Isopropanol ug/m3 5.62 108-88-3 Toluene ug/m3 2.07 108-38-3 Xylene, m-ug/m3 1.37 95-47-6 Xylene, o-ug/m3 Input Form 2E Indoor Air Exposure Point Concentration Table Note: Chemicals highlighted in orange are non-volatile chemicals. Risks are calculated for these chemicals if indoor air concentrations are entered and indoor air screening levels have been established, but it should be noted that detections of these chemicals are likely not associated with vapor intrusion.If the chemical list is changed from a prior calculator run, remember to select "See All Chemicals" on the data output sheet or newly added chemicals will not be included in risk calculations North Carolina DEQ Risk Calculator Risk for Individual Pathways Output Form 1A Version Date: July 2022 Basis: May 2022 EPA RSL Table Site ID: 19038-15-060 Exposure Unit ID: IA-B-2 Receptor Pathway Carcinogenic Risk Hazard Index Risk exceeded? Soil NC NC NC Groundwater Use*NC NC NC Soil NC NC NC Groundwater Use*NC NC NC Construction Worker Soil NC NC NC Soil NC NC NC Surface Water*NC NC NC Receptor Pathway Carcinogenic Risk Hazard Index Risk exceeded? Groundwater to Indoor Air NC NC NC Soil Gas to Indoor Air NC NC NC Indoor Air 6.7E-06 4.5E+00 YES Groundwater to Indoor Air NC NC NC Soil Gas to Indoor Air NC NC NC Indoor Air 1.5E-06 1.1E+00 YES Pathway Source Source Soil NC Source Groundwater NC Source Soil NC Source Groundwater NC 3. NM = Not Modeled 4. NC = Pathway not calculated DIRECT CONTACT SOIL AND WATER CALCULATORS Resident Non-Residential Worker Recreator/Trespasser 2. * = If concentrations in groundwater exceed the NC 2L Standards or IMAC, or concentrations in surface water exceed the NC 2B Standards, appropriate remediation and/or institutional control measures will be necessary to be eligible for a risk-based closure. Surface Water Exceedence of 2B at Receptor? Exceedence of 2B at Receptor? VAPOR INTRUSION CALCULATORS Resident Non-Residential Worker CONTAMINANT MIGRATION CALCULATORS Target Receptor Concentrations Exceeded? Groundwater Exceedence of 2L at Receptor? Exceedence of 2L at Receptor? 1. If lead concentrations were entered in the exposure point concentration tables, see the individual calculator sheets for lead concentrations in comparison to screening levels. Note that lead is not included in cumulative risk calculations. Notes: North Carolina DEQ Risk Calculator DEQ Risk Calculator - Vapor Intrusion - Resident Indoor Air Version Date: July 2022 Basis: May 2022 EPA RSL Table Site ID: 19038-15-060 Exposure Unit ID: IA-B-2 CAS #Chemical Name: Indoor Air Concentration (ug/m3) Target Indoor Air Conc. for Carcinogens @ TCR = 1E-06 Target Indoor Air Conc. for Non- Carcinogens @ THQ = 0.2 Calculated Carcinogenic Risk Calculated Non-Carcinogenic Hazard Quotient 67-64-1 Acetone 5000 -- 71-43-2 Benzene 0.418 3.6E-01 6.3E+00 1.2E-06 1.3E-02 67-66-3 Chloroform 0.615 1.2E-01 2.0E+01 5.0E-06 6.0E-0374-87-3 Chloromethane 0.613 -1.9E+01 6.5E-03 75-71-8 Dichlorodifluoromethane 2.5 -2.1E+01 2.4E-02 141-78-6 Ethyl Acetate 52.4 -1.5E+01 7.2E-01100-41-4 Ethylbenzene 0.608 1.1E+00 2.1E+02 5.4E-07 5.8E-04 142-82-5 Heptane, N-1.23 -8.3E+01 2.9E-03 67-63-0 Isopropanol 770 -4.2E+01 3.7E+00108-88-3 Toluene 5.62 -1.0E+03 1.1E-03 108-38-3 Xylene, m-2.07 -2.1E+01 2.0E-02 95-47-6 Xylene, o-1.37 -2.1E+01 1.3E-02 Cumulative:6.7E-06 4.5E+00 All concentrations are in ug/m3 Output Form 3C ** - Note that the EPA has no consensus on reference dose or cancer slope factor values for lead, therefore it is not possible to calculate carcinogenic risk or hazard quotient. Lead concentrations are compared to the National Ambient Air Quality Standard of 0.15 μg/m3. Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Risks are calculated for these values if indoor air concentrations are entered and indoor air screening levels have been established, but it should be noted that detections of these chemicals are likely not associated with vapor intrusion. North Carolina DEQ Risk Calculator DEQ Risk Calculator - Vapor Intrusion - Non-Residential Worker Indoor Air Version Date: July 2022 Basis: May 2022 EPA RSL Table Site ID: 19038-15-060 Exposure Unit ID: IA-B-2 CAS #Chemical Name: Indoor Air Concentration (ug/m3) Target Indoor Air Conc. for Carcinogens @ TCR = 1E-06 Target Indoor Air Conc. for Non- Carcinogens @ THQ = 0.2 Calculated Carcinogenic Risk Calculated Non- Carcinogenic Hazard Quotient 67-64-1 Acetone 5000 -- 71-43-2 Benzene 0.418 1.6E+00 2.6E+01 2.7E-07 3.2E-0367-66-3 Chloroform 0.615 5.3E-01 8.6E+01 1.2E-06 1.4E-03 74-87-3 Chloromethane 0.613 -7.9E+01 1.6E-03 75-71-8 Dichlorodifluoromethane 2.5 -8.8E+01 5.7E-03141-78-6 Ethyl Acetate 52.4 -6.1E+01 1.7E-01 100-41-4 Ethylbenzene 0.608 4.9E+00 8.8E+02 1.2E-07 1.4E-04 142-82-5 Heptane, N-1.23 -3.5E+02 7.0E-04 67-63-0 Isopropanol 770 -1.8E+02 8.8E-01108-88-3 Toluene 5.62 -4.4E+03 2.6E-04 108-38-3 Xylene, m-2.07 -8.8E+01 4.7E-03 95-47-6 Xylene, o-1.37 -8.8E+01 3.1E-03 Cumulative:1.5E-06 1.1E+00 All concentrations are in ug/m3 Output Form 3F ** - Note that the EPA has no consensus on reference dose or cancer slope factor values for lead, therefore it is not possible to calculate carcinogenic risk or hazard quotient. Lead concentrations are compared to the National Ambient Air Quality Standard of 0.15 μg/m3. Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Risks are calculated for these values if indoor air concentrations are entered and indoor air screening levels have been established, but it should be noted that detections of these chemicals are likely not associated with vapor intrusion. North Carolina DEQ Risk Calculator Version Date: Basis: Site Name: Site Address: DEQ Section: Site ID: Exposure Unit ID: Submittal Date: Reviewed By: Prepared By:Hart & Hickman, PC IA-B-2 Modified North Carolina Department of Environmental Quality Risk Calculator Dunavant Street Charlotte, NC DWM Brownfields Program 19038-15-060 July 2022 May 2022 EPA RSL Table North Carolina DEQ Risk Calculator Complete Exposure Pathways Version Date: July 2022 Basis: May 2022 EPA RSL Table Site ID: 19038-15-060 Exposure Unit ID: IA-B-2 Modified Note: Risk output will only be calculated for complete exposure pathways. Receptor Pathway Check box if pathway complete Soil Groundwater Use Soil Groundwater Use Construction Worker Soil Soil Surface Water Groundwater to Indoor Air Soil Gas to Indoor Air Indoor Air Groundwater to Indoor Air Soil Gas to Indoor Air Indoor Air Source Soil Source Groundwater Source Soil Source Groundwater Input Form 1A VAPOR INTRUSION PATHWAYS DIRECT CONTACT SOIL AND WATER PATHWAYS Resident Non-Residential Worker Recreator/Trespasser Resident Non-Residential Worker CONTAMINANT MIGRATION PATHWAYS Groundwater Surface Water North Carolina DEQ Risk Calculator Exposure Point Concentrations Version Date: July 2022 Basis: May 2022 EPA RSL Table Site ID: 19038-15-060 Exposure Unit ID: IA-B-2 Modified Description of Exposure Point Concentration Selection: Exposure Point Concentration (ug/m3) Notes:CAS Number Chemical Minimum Concentration (Qualifier) Maximum Concentration (Qualifier) Units Location of Maximum Concentration Detection Frequency Range of Detection Limits Concentration Used for Screening Background Value Screening Toxicity Value (Screening Level) (n/c) Potential ARAR/TBC Value Potential ARAR/TBC Source COPC Flag (Y/N) Rationale for Selection or Deletion 5000 67-64-1 Acetone ug/m3 0.418 71-43-2 Benzene ug/m3 0.615 67-66-3 Chloroform ug/m3 0.613 74-87-3 Chloromethane ug/m3 2.5 75-71-8 Dichlorodifluoromethane ug/m3 52.4 141-78-6 Ethyl Acetate ug/m3 0.608 100-41-4 Ethylbenzene ug/m3 1.23 142-82-5 Heptane, N-ug/m3 5.62 108-88-3 Toluene ug/m3 2.07 108-38-3 Xylene, m-ug/m3 1.37 95-47-6 Xylene, o-ug/m3 Input Form 2E Indoor Air Exposure Point Concentration Table Note: Chemicals highlighted in orange are non-volatile chemicals. Risks are calculated for these chemicals if indoor air concentrations are entered and indoor air screening levels have been established, but it should be noted that detections of these chemicals are likely not associated with vapor intrusion.If the chemical list is changed from a prior calculator run, remember to select "See All Chemicals" on the data output sheet or newly added chemicals will not be included in risk calculations North Carolina DEQ Risk Calculator Risk for Individual Pathways Output Form 1A Version Date: July 2022 Basis: May 2022 EPA RSL Table Site ID: 19038-15-060 Exposure Unit ID: IA-B-2 Modified Receptor Pathway Carcinogenic Risk Hazard Index Risk exceeded? Soil NC NC NC Groundwater Use*NC NC NC Soil NC NC NC Groundwater Use*NC NC NC Construction Worker Soil NC NC NC Soil NC NC NC Surface Water*NC NC NC Receptor Pathway Carcinogenic Risk Hazard Index Risk exceeded? Groundwater to Indoor Air NC NC NC Soil Gas to Indoor Air NC NC NC Indoor Air 6.7E-06 8.1E-01 NO Groundwater to Indoor Air NC NC NC Soil Gas to Indoor Air NC NC NC Indoor Air 1.5E-06 1.9E-01 NO Pathway Source Source Soil NC Source Groundwater NC Source Soil NC Source Groundwater NC 3. NM = Not Modeled 4. NC = Pathway not calculated DIRECT CONTACT SOIL AND WATER CALCULATORS Resident Non-Residential Worker Recreator/Trespasser 2. * = If concentrations in groundwater exceed the NC 2L Standards or IMAC, or concentrations in surface water exceed the NC 2B Standards, appropriate remediation and/or institutional control measures will be necessary to be eligible for a risk-based closure. Surface Water Exceedence of 2B at Receptor? Exceedence of 2B at Receptor? VAPOR INTRUSION CALCULATORS Resident Non-Residential Worker CONTAMINANT MIGRATION CALCULATORS Target Receptor Concentrations Exceeded? Groundwater Exceedence of 2L at Receptor? Exceedence of 2L at Receptor? 1. If lead concentrations were entered in the exposure point concentration tables, see the individual calculator sheets for lead concentrations in comparison to screening levels. Note that lead is not included in cumulative risk calculations. Notes: North Carolina DEQ Risk Calculator DEQ Risk Calculator - Vapor Intrusion - Resident Indoor Air Version Date: July 2022 Basis: May 2022 EPA RSL Table Site ID: 19038-15-060 Exposure Unit ID: IA-B-2 Modified CAS #Chemical Name: Indoor Air Concentration (ug/m3) Target Indoor Air Conc. for Carcinogens @ TCR = 1E-06 Target Indoor Air Conc. for Non- Carcinogens @ THQ = 0.2 Calculated Carcinogenic Risk Calculated Non-Carcinogenic Hazard Quotient 67-64-1 Acetone 5000 -- 71-43-2 Benzene 0.418 3.6E-01 6.3E+00 1.2E-06 1.3E-02 67-66-3 Chloroform 0.615 1.2E-01 2.0E+01 5.0E-06 6.0E-0374-87-3 Chloromethane 0.613 -1.9E+01 6.5E-03 75-71-8 Dichlorodifluoromethane 2.5 -2.1E+01 2.4E-02 141-78-6 Ethyl Acetate 52.4 -1.5E+01 7.2E-01100-41-4 Ethylbenzene 0.608 1.1E+00 2.1E+02 5.4E-07 5.8E-04 142-82-5 Heptane, N-1.23 -8.3E+01 2.9E-03 108-88-3 Toluene 5.62 -1.0E+03 1.1E-03 108-38-3 Xylene, m-2.07 -2.1E+01 2.0E-02 95-47-6 Xylene, o-1.37 -2.1E+01 1.3E-02 Cumulative:6.7E-06 8.1E-01 All concentrations are in ug/m3 Output Form 3C ** - Note that the EPA has no consensus on reference dose or cancer slope factor values for lead, therefore it is not possible to calculate carcinogenic risk or hazard quotient. Lead concentrations are compared to the National Ambient Air Quality Standard of 0.15 μg/m3. Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Risks are calculated for these values if indoor air concentrations are entered and indoor air screening levels have been established, but it should be noted that detections of these chemicals are likely not associated with vapor intrusion. North Carolina DEQ Risk Calculator DEQ Risk Calculator - Vapor Intrusion - Non-Residential Worker Indoor Air Version Date: July 2022 Basis: May 2022 EPA RSL Table Site ID: 19038-15-060 Exposure Unit ID: IA-B-2 Modified CAS #Chemical Name: Indoor Air Concentration (ug/m3) Target Indoor Air Conc. for Carcinogens @ TCR = 1E-06 Target Indoor Air Conc. for Non- Carcinogens @ THQ = 0.2 Calculated Carcinogenic Risk Calculated Non- Carcinogenic Hazard Quotient 67-64-1 Acetone 5000 -- 71-43-2 Benzene 0.418 1.6E+00 2.6E+01 2.7E-07 3.2E-0367-66-3 Chloroform 0.615 5.3E-01 8.6E+01 1.2E-06 1.4E-03 74-87-3 Chloromethane 0.613 -7.9E+01 1.6E-03 75-71-8 Dichlorodifluoromethane 2.5 -8.8E+01 5.7E-03141-78-6 Ethyl Acetate 52.4 -6.1E+01 1.7E-01 100-41-4 Ethylbenzene 0.608 4.9E+00 8.8E+02 1.2E-07 1.4E-04 142-82-5 Heptane, N-1.23 -3.5E+02 7.0E-04 108-88-3 Toluene 5.62 -4.4E+03 2.6E-04108-38-3 Xylene, m-2.07 -8.8E+01 4.7E-03 95-47-6 Xylene, o-1.37 -8.8E+01 3.1E-03 Cumulative:1.5E-06 1.9E-01 All concentrations are in ug/m3 Output Form 3F ** - Note that the EPA has no consensus on reference dose or cancer slope factor values for lead, therefore it is not possible to calculate carcinogenic risk or hazard quotient. Lead concentrations are compared to the National Ambient Air Quality Standard of 0.15 μg/m3. Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Risks are calculated for these values if indoor air concentrations are entered and indoor air screening levels have been established, but it should be noted that detections of these chemicals are likely not associated with vapor intrusion. North Carolina DEQ Risk Calculator Version Date: Basis: Site Name: Site Address: DEQ Section: Site ID: Exposure Unit ID: Submittal Date: Reviewed By: Prepared By:Hart & Hickman, PC IA-B-3 (Modified) North Carolina Department of Environmental Quality Risk Calculator Dunavant Street Charlotte, NC DWM Brownfields Program 19038-15-060 July 2022 May 2022 EPA RSL Table North Carolina DEQ Risk Calculator Complete Exposure Pathways Version Date: July 2022 Basis: May 2022 EPA RSL Table Site ID: 19038-15-060 Exposure Unit ID: IA-B-3 (Modified) Note: Risk output will only be calculated for complete exposure pathways. Receptor Pathway Check box if pathway complete Soil Groundwater Use Soil Groundwater Use Construction Worker Soil Soil Surface Water Groundwater to Indoor Air Soil Gas to Indoor Air Indoor Air Groundwater to Indoor Air Soil Gas to Indoor Air Indoor Air Source Soil Source Groundwater Source Soil Source Groundwater Input Form 1A VAPOR INTRUSION PATHWAYS DIRECT CONTACT SOIL AND WATER PATHWAYS Resident Non-Residential Worker Recreator/Trespasser Resident Non-Residential Worker CONTAMINANT MIGRATION PATHWAYS Groundwater Surface Water North Carolina DEQ Risk Calculator Exposure Point Concentrations Version Date: July 2022 Basis: May 2022 EPA RSL Table Site ID: 19038-15-060 Exposure Unit ID: IA-B-3 (Modified) Description of Exposure Point Concentration Selection: Exposure Point Concentration (ug/m3) Notes:CAS Number Chemical Minimum Concentration (Qualifier) Maximum Concentration (Qualifier) Units Location of Maximum Concentration Detection Frequency Range of Detection Limits Concentration Used for Screening Background Value Screening Toxicity Value (Screening Level) (n/c) Potential ARAR/TBC Value Potential ARAR/TBC Source COPC Flag (Y/N) Rationale for Selection or Deletion 4970 67-64-1 Acetone ug/m3 0.576 67-66-3 Chloroform ug/m3 0.482 110-82-7 Cyclohexane ug/m3 2.49 75-71-8 Dichlorodifluoromethane ug/m3 53.7 141-78-6 Ethyl Acetate ug/m3 0.482 100-41-4 Ethylbenzene ug/m3 0.959 142-82-5 Heptane, N-ug/m3 4.08 78-93-3 Methyl Ethyl Ketone (2-Butanone)ug/m3 7.56 108-88-3 Toluene ug/m3 1.85 108-38-3 Xylene, m-ug/m3 1.11 95-47-6 Xylene, o-ug/m3 Input Form 2E Indoor Air Exposure Point Concentration Table Note: Chemicals highlighted in orange are non-volatile chemicals. Risks are calculated for these chemicals if indoor air concentrations are entered and indoor air screening levels have been established, but it should be noted that detections of these chemicals are likely not associated with vapor intrusion.If the chemical list is changed from a prior calculator run, remember to select "See All Chemicals" on the data output sheet or newly added chemicals will not be included in risk calculations North Carolina DEQ Risk Calculator Risk for Individual Pathways Output Form 1A Version Date: July 2022 Basis: May 2022 EPA RSL Table Site ID: 19038-15-060 Exposure Unit ID: IA-B-3 (Modified) Receptor Pathway Carcinogenic Risk Hazard Index Risk exceeded? Soil NC NC NC Groundwater Use*NC NC NC Soil NC NC NC Groundwater Use*NC NC NC Construction Worker Soil NC NC NC Soil NC NC NC Surface Water*NC NC NC Receptor Pathway Carcinogenic Risk Hazard Index Risk exceeded? Groundwater to Indoor Air NC NC NC Soil Gas to Indoor Air NC NC NC Indoor Air 5.1E-06 8.0E-01 NO Groundwater to Indoor Air NC NC NC Soil Gas to Indoor Air NC NC NC Indoor Air 1.2E-06 1.9E-01 NO Pathway Source Source Soil NC Source Groundwater NC Source Soil NC Source Groundwater NC 3. NM = Not Modeled 4. NC = Pathway not calculated DIRECT CONTACT SOIL AND WATER CALCULATORS Resident Non-Residential Worker Recreator/Trespasser 2. * = If concentrations in groundwater exceed the NC 2L Standards or IMAC, or concentrations in surface water exceed the NC 2B Standards, appropriate remediation and/or institutional control measures will be necessary to be eligible for a risk-based closure. Surface Water Exceedence of 2B at Receptor? Exceedence of 2B at Receptor? VAPOR INTRUSION CALCULATORS Resident Non-Residential Worker CONTAMINANT MIGRATION CALCULATORS Target Receptor Concentrations Exceeded? Groundwater Exceedence of 2L at Receptor? Exceedence of 2L at Receptor? 1. If lead concentrations were entered in the exposure point concentration tables, see the individual calculator sheets for lead concentrations in comparison to screening levels. Note that lead is not included in cumulative risk calculations. Notes: North Carolina DEQ Risk Calculator DEQ Risk Calculator - Vapor Intrusion - Resident Indoor Air Version Date: July 2022 Basis: May 2022 EPA RSL Table Site ID: 19038-15-060 Exposure Unit ID: IA-B-3 (Modified) CAS #Chemical Name: Indoor Air Concentration (ug/m3) Target Indoor Air Conc. for Carcinogens @ TCR = 1E-06 Target Indoor Air Conc. for Non- Carcinogens @ THQ = 0.2 Calculated Carcinogenic Risk Calculated Non-Carcinogenic Hazard Quotient 67-64-1 Acetone 4970 -- 67-66-3 Chloroform 0.576 1.2E-01 2.0E+01 4.7E-06 5.6E-03 110-82-7 Cyclohexane 0.482 -1.3E+03 7.7E-0575-71-8 Dichlorodifluoromethane 2.49 -2.1E+01 2.4E-02 141-78-6 Ethyl Acetate 53.7 -1.5E+01 7.4E-01 100-41-4 Ethylbenzene 0.482 1.1E+00 2.1E+02 4.3E-07 4.6E-04 142-82-5 Heptane, N-0.959 -8.3E+01 2.3E-03 78-93-3 Methyl Ethyl Ketone (2-Butanone)4.08 -1.0E+03 7.8E-04 108-88-3 Toluene 7.56 -1.0E+03 1.4E-03 108-38-3 Xylene, m-1.85 -2.1E+01 1.8E-02 95-47-6 Xylene, o-1.11 -2.1E+01 1.1E-02 Cumulative:5.1E-06 8.0E-01 All concentrations are in ug/m3 Output Form 3C ** - Note that the EPA has no consensus on reference dose or cancer slope factor values for lead, therefore it is not possible to calculate carcinogenic risk or hazard quotient. Lead concentrations are compared to the National Ambient Air Quality Standard of 0.15 μg/m3. Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Risks are calculated for these values if indoor air concentrations are entered and indoor air screening levels have been established, but it should be noted that detections of these chemicals are likely not associated with vapor intrusion. North Carolina DEQ Risk Calculator DEQ Risk Calculator - Vapor Intrusion - Non-Residential Worker Indoor Air Version Date: July 2022 Basis: May 2022 EPA RSL Table Site ID: 19038-15-060 Exposure Unit ID: IA-B-3 (Modified) CAS #Chemical Name: Indoor Air Concentration (ug/m3) Target Indoor Air Conc. for Carcinogens @ TCR = 1E-06 Target Indoor Air Conc. for Non- Carcinogens @ THQ = 0.2 Calculated Carcinogenic Risk Calculated Non- Carcinogenic Hazard Quotient 67-64-1 Acetone 4970 -- 67-66-3 Chloroform 0.576 5.3E-01 8.6E+01 1.1E-06 1.3E-03110-82-7 Cyclohexane 0.482 -5.3E+03 1.8E-05 75-71-8 Dichlorodifluoromethane 2.49 -8.8E+01 5.7E-03 141-78-6 Ethyl Acetate 53.7 -6.1E+01 1.8E-01100-41-4 Ethylbenzene 0.482 4.9E+00 8.8E+02 9.8E-08 1.1E-04 142-82-5 Heptane, N-0.959 -3.5E+02 5.5E-04 78-93-3 Methyl Ethyl Ketone (2-Butanone)4.08 -4.4E+03 1.9E-04 108-88-3 Toluene 7.56 -4.4E+03 3.5E-04108-38-3 Xylene, m-1.85 -8.8E+01 4.2E-03 95-47-6 Xylene, o-1.11 -8.8E+01 2.5E-03 Cumulative:1.2E-06 1.9E-01 All concentrations are in ug/m3 Output Form 3F ** - Note that the EPA has no consensus on reference dose or cancer slope factor values for lead, therefore it is not possible to calculate carcinogenic risk or hazard quotient. Lead concentrations are compared to the National Ambient Air Quality Standard of 0.15 μg/m3. Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Risks are calculated for these values if indoor air concentrations are entered and indoor air screening levels have been established, but it should be noted that detections of these chemicals are likely not associated with vapor intrusion. North Carolina DEQ Risk Calculator Version Date: Basis: Site Name: Site Address: DEQ Section: Site ID: Exposure Unit ID: Submittal Date: Reviewed By: IA-B-3 North Carolina Department of Environmental Quality Risk Calculator Dunavant Street Charlotte, NC DWM Brownfields Program 19038-15-060 July 2022 May 2022 EPA RSL Table Prepared By:Hart & Hickman, PC North Carolina DEQ Risk Calculator Complete Exposure Pathways Version Date: July 2022 Basis: May 2022 EPA RSL Table Site ID: 19038-15-060 Exposure Unit ID: IA-B-3 Note: Risk output will only be calculated for complete exposure pathways. Receptor Pathway Check box if pathway complete Soil Groundwater Use Soil Groundwater Use Construction Worker Soil Soil Surface Water Groundwater to Indoor Air Soil Gas to Indoor Air Indoor Air Groundwater to Indoor Air Soil Gas to Indoor Air Indoor Air Source Soil Source Groundwater Source Soil Source Groundwater Resident Non-Residential Worker CONTAMINANT MIGRATION PATHWAYS Groundwater Surface Water Input Form 1A VAPOR INTRUSION PATHWAYS DIRECT CONTACT SOIL AND WATER PATHWAYS Resident Non-Residential Worker Recreator/Trespasser North Carolina DEQ Risk Calculator Exposure Point Concentrations Version Date: July 2022 Basis: May 2022 EPA RSL Table Site ID: 19038-15-060 Exposure Unit ID: IA-B-3 Description of Exposure Point Concentration Selection: Exposure Point Concentration (ug/m3) Notes:CAS Number Chemical Minimum Concentration (Qualifier) Maximum Concentration (Qualifier) Units Location of Maximum Concentration Detection Frequency Range of Detection Limits Concentration Used for Screening Background Value Screening Toxicity Value (Screening Level) (n/c) Potential ARAR/TBC Value Potential ARAR/TBC Source COPC Flag (Y/N) Rationale for Selection or Deletion 4970 67-64-1 Acetone ug/m3 0.576 67-66-3 Chloroform ug/m3 0.482 110-82-7 Cyclohexane ug/m3 2.49 75-71-8 Dichlorodifluoromethane ug/m3 53.7 141-78-6 Ethyl Acetate ug/m3 0.482 100-41-4 Ethylbenzene ug/m3 0.959 142-82-5 Heptane, N-ug/m3 1060 67-63-0 Isopropanol ug/m3 4.08 78-93-3 Methyl Ethyl Ketone (2-Butanone)ug/m3 7.56 108-88-3 Toluene ug/m3 1.85 108-38-3 Xylene, m-ug/m3 1.11 95-47-6 Xylene, o-ug/m3 Input Form 2E Indoor Air Exposure Point Concentration Table Note: Chemicals highlighted in orange are non-volatile chemicals. Risks are calculated for these chemicals if indoor air concentrations are entered and indoor air screening levels have been established, but it should be noted that detections of these chemicals are likely not associated with vapor intrusion.If the chemical list is changed from a prior calculator run, remember to select "See All Chemicals" on the data output sheet or newly added chemicals will not be included in risk calculations North Carolina DEQ Risk Calculator Risk for Individual Pathways Output Form 1A Version Date: July 2022 Basis: May 2022 EPA RSL Table Site ID: 19038-15-060 Exposure Unit ID: IA-B-3 Receptor Pathway Carcinogenic Risk Hazard Index Risk exceeded? Soil NC NC NC Groundwater Use*NC NC NC Soil NC NC NC Groundwater Use*NC NC NC Construction Worker Soil NC NC NC Soil NC NC NC Surface Water*NC NC NC Receptor Pathway Carcinogenic Risk Hazard Index Risk exceeded? Groundwater to Indoor Air NC NC NC Soil Gas to Indoor Air NC NC NC Indoor Air 5.1E-06 5.9E+00 YES Groundwater to Indoor Air NC NC NC Soil Gas to Indoor Air NC NC NC Indoor Air 1.2E-06 1.4E+00 YES Pathway Source Source Soil NC Source Groundwater NC Source Soil NC Source Groundwater NC 3. NM = Not Modeled 4. NC = Pathway not calculated 2. * = If concentrations in groundwater exceed the NC 2L Standards or IMAC, or concentrations in surface water exceed the NC 2B Standards, appropriate remediation and/or institutional control measures will be necessary to be eligible for a risk-based closure. Surface Water Exceedence of 2B at Receptor? Exceedence of 2B at Receptor? VAPOR INTRUSION CALCULATORS Resident Non-Residential Worker CONTAMINANT MIGRATION CALCULATORS Target Receptor Concentrations Exceeded? Groundwater Exceedence of 2L at Receptor? Exceedence of 2L at Receptor? 1. If lead concentrations were entered in the exposure point concentration tables, see the individual calculator sheets for lead concentrations in comparison to screening levels. Note that lead is not included in cumulative risk calculations. Notes: DIRECT CONTACT SOIL AND WATER CALCULATORS Resident Non-Residential Worker Recreator/Trespasser North Carolina DEQ Risk Calculator DEQ Risk Calculator - Vapor Intrusion - Resident Indoor Air Version Date: July 2022 Basis: May 2022 EPA RSL Table Site ID: 19038-15-060 Exposure Unit ID: IA-B-3 CAS #Chemical Name: Indoor Air Concentration (ug/m3) Target Indoor Air Conc. for Carcinogens @ TCR = 1E-06 Target Indoor Air Conc. for Non- Carcinogens @ THQ = 0.2 Calculated Carcinogenic Risk Calculated Non-Carcinogenic Hazard Quotient 67-64-1 Acetone 4970 -- 67-66-3 Chloroform 0.576 1.2E-01 2.0E+01 4.7E-06 5.6E-03 110-82-7 Cyclohexane 0.482 -1.3E+03 7.7E-0575-71-8 Dichlorodifluoromethane 2.49 -2.1E+01 2.4E-02 141-78-6 Ethyl Acetate 53.7 -1.5E+01 7.4E-01 100-41-4 Ethylbenzene 0.482 1.1E+00 2.1E+02 4.3E-07 4.6E-04 142-82-5 Heptane, N-0.959 -8.3E+01 2.3E-03 67-63-0 Isopropanol 1060 -4.2E+01 5.1E+00 78-93-3 Methyl Ethyl Ketone (2-Butanone)4.08 -1.0E+03 7.8E-04 108-88-3 Toluene 7.56 -1.0E+03 1.4E-03 108-38-3 Xylene, m-1.85 -2.1E+01 1.8E-02 95-47-6 Xylene, o-1.11 -2.1E+01 1.1E-02 Cumulative:5.1E-06 5.9E+00 All concentrations are in ug/m3 Output Form 3C ** - Note that the EPA has no consensus on reference dose or cancer slope factor values for lead, therefore it is not possible to calculate carcinogenic risk or hazard quotient. Lead concentrations are compared to the National Ambient Air Quality Standard of 0.15 μg/m3. Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Risks are calculated for these values if indoor air concentrations are entered and indoor air screening levels have been established, but it should be noted that detections of these chemicals are likely not associated with vapor intrusion. North Carolina DEQ Risk Calculator DEQ Risk Calculator - Vapor Intrusion - Non-Residential Worker Indoor Air Version Date: July 2022 Basis: May 2022 EPA RSL Table Site ID: 19038-15-060 Exposure Unit ID: IA-B-3 CAS #Chemical Name: Indoor Air Concentration (ug/m3) Target Indoor Air Conc. for Carcinogens @ TCR = 1E-06 Target Indoor Air Conc. for Non- Carcinogens @ THQ = 0.2 Calculated Carcinogenic Risk Calculated Non- Carcinogenic Hazard Quotient 67-64-1 Acetone 4970 -- 67-66-3 Chloroform 0.576 5.3E-01 8.6E+01 1.1E-06 1.3E-03110-82-7 Cyclohexane 0.482 -5.3E+03 1.8E-05 75-71-8 Dichlorodifluoromethane 2.49 -8.8E+01 5.7E-03 141-78-6 Ethyl Acetate 53.7 -6.1E+01 1.8E-01100-41-4 Ethylbenzene 0.482 4.9E+00 8.8E+02 9.8E-08 1.1E-04 142-82-5 Heptane, N-0.959 -3.5E+02 5.5E-04 67-63-0 Isopropanol 1060 -1.8E+02 1.2E+00 78-93-3 Methyl Ethyl Ketone (2-Butanone)4.08 -4.4E+03 1.9E-04108-88-3 Toluene 7.56 -4.4E+03 3.5E-04 108-38-3 Xylene, m-1.85 -8.8E+01 4.2E-03 95-47-6 Xylene, o-1.11 -8.8E+01 2.5E-03 Cumulative:1.2E-06 1.4E+00 All concentrations are in ug/m3 Output Form 3F ** - Note that the EPA has no consensus on reference dose or cancer slope factor values for lead, therefore it is not possible to calculate carcinogenic risk or hazard quotient. Lead concentrations are compared to the National Ambient Air Quality Standard of 0.15 μg/m3. Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Risks are calculated for these values if indoor air concentrations are entered and indoor air screening levels have been established, but it should be noted that detections of these chemicals are likely not associated with vapor intrusion. North Carolina DEQ Risk Calculator