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Home My WebLink About24003_North Davidson II_VIMS Post-Occ Report_421 E. 26th_20240329Semi-Annual VIMS Post-Occupancy Report 421 E. 26th Street Building Seoul Food Company North Davidson II Brownfields Property Brownfields Project No. 24003-20-060 Charlotte, North Carolina H&H Job No. PAM-003 March 29, 2024 #C-1269 Engineering #C-245 Geology i https://harthick.sharepoint.com/sites/MasterFiles-1/Shared Documents/AAA-Master Projects/PAMAKA - PAM/PAM-003 N. Davidson & E. 26th/VIMS/421 E 26 St/Post-Occupancy/2024-01 IAS/Text/24003_North Davidson II_VIMS Post-Occ Report_421 N. 26th_3.29.24 2.docx Semi-Annual VIMS Post-Occupancy Report North Davidson II Brownfields Property 421 E. 26th Street Seoul Food Company Charlotte, North Carolina Brownfields Project No. 24003-20-060 H&H Job No. PAM-003 Table of Contents 1.0 Introduction and Background ...............................................................................................1 2.0 VIMS Post-Occupancy Sampling Activities .........................................................................4 2.1 Building Survey Activities ....................................................................................................4 2.2 Indoor Air Sampling Methodology .......................................................................................4 2.3 Indoor Air Sampling Results ................................................................................................6 2.4 Vapor Intrusion Evaluation ...................................................................................................7 3.0 Summary, Conclusions, and Recommendations ..................................................................9 Figures Figure 1 Site Location Map Figure 2 Site Layout Map Figure 3 Sample Location Map – January 2024 Tables Table 1 Summary of VIMS Post-Installation Indoor Air Analytical Data Table 2 Summary of VIMS Post-Installation Sub-Slab Vapor Analytical Data ii https://harthick.sharepoint.com/sites/MasterFiles-1/Shared Documents/AAA-Master Projects/PAMAKA - PAM/PAM-003 N. Davidson & E. 26th/VIMS/421 E 26 St/Post-Occupancy/2024-01 IAS/Text/24003_North Davidson II_VIMS Post-Occ Report_421 N. 26th_3.29.24 2.docx Appendices Appendix A Excerpts from Previous Assessment Activities Appendix B VIMS As-Built Drawings – 421 E. 26th Street (Seoul Food Company) Appendix C Field Forms Appendix D Laboratory Analytical Report Appendix E DEQ Risk Calculator Summary Pages 1 https://harthick.sharepoint.com/sites/MasterFiles-1/Shared Documents/AAA-Master Projects/PAMAKA - PAM/PAM-003 N. Davidson & E. 26th/VIMS/421 E 26 St/Post-Occupancy/2024-01 IAS/Text/24003_North Davidson II_VIMS Post-Occ Report_421 N. 26th_3.29.24 2.docx Semi-Annual VIMS Post-Occupancy Report North Davidson II Brownfields Property 421 E. 26th Street Seoul Food Company Charlotte, North Carolina Brownfields Project No. 24003-20-060 H&H Job No. PAM-003 1.0 Introduction and Background On behalf of Mill District Partners, LLC (Prospective Developer, PD), Hart & Hickman, PC (H&H) has prepared this report summarizing vapor intrusion mitigation system (VIMS) semi- annual post-occupancy sampling activities completed at the 421 E. 26th Street building located at the North Davidson II North Carolina Department of Environmental Quality (DEQ) Brownfields property (Brownfields Project No. 24003-20-060). The Brownfields property is located at 2315 N. Davidson Street and 421 E. 26th Street in Charlotte, Mecklenburg County, North Carolina (Site or subject Site). A Brownfields Agreement between DEQ and the PD was recorded for the Site on June 9, 2021. The Site has been developed for non-residential use by Mill District Partners, LLC which also manages the property. A Site location map is included as Figure 1, and a Site layout map is included as Figure 2. The Site consists of two parcels of land (Parcel Identification Numbers 08305204 and 08305206) that total approximately 3.8 acres and are separated by a pedestrian walkway that replaced an inactive rail corridor. The southeastern parcel (2315 N. Davidson Street) is developed with an approximate 29,000-square foot (sq ft) commercial building that has been retrofitted to a commercial space known as the Urban District Market (UDM) food hall and office spaces. The northwestern parcel (421 E. 26th Street) is developed with an approximate 16,800-sq ft building that was retrofitted for Seoul Food Company, a commercial restaurant and entertainment space. A pavilion structure was also constructed in between the two buildings which consists of an enclosed kitchen with a concession-style serving window. This report pertains to the post-occupancy VIMS sampling activities for the Seoul Food Company building (Seoul) located at 421 E. 26th Street. VIMS activities for the pavilion structure and 2315 N. Davidson Street Brownfields activities are documented under separate cover. 2 https://harthick.sharepoint.com/sites/MasterFiles-1/Shared Documents/AAA-Master Projects/PAMAKA - PAM/PAM-003 N. Davidson & E. 26th/VIMS/421 E 26 St/Post-Occupancy/2024-01 IAS/Text/24003_North Davidson II_VIMS Post-Occ Report_421 N. 26th_3.29.24 2.docx The Seoul building is a one-story, commercial-use building utilized for restaurant and entertainment purposes. The total area of the Seoul Food Company building is approximately 15,500 sq ft, which includes the pre-existing building and the approximately 1,300-sq ft building extension on the eastern side of the building for use as a walk-in refrigerator. Sections of the pre- existing slab were removed during redevelopment to accommodate tenant utility installation, and a new concrete pad was poured for the building extension. As described in the previous reports of the Site, historical assessments at the 421 E. 26th Street parcel prior to redevelopment indicated acceptable risk levels. However, historical assessment activities at the 2315 N. Davidson Street building indicated the presence of trichloroethylene (TCE) and tetrachlorethylene (PCE) in sub-slab vapor samples at concentrations above their respective screening limits (see Appendix A). Therefore, as a precaution for potential future migration of Site contaminants, specifically TCE and PCE, and in accordance with LUR h. in the Brownfields Agreement for the Site, a passive VIMS was installed at the Seoul Food building in accordance with the Vapor Intrusion Mitigation Plan – Revision 2 (VIMP) dated May 6, 2021. The DEQ-approved VIMP included the installation of a VIMS during renovation of the building to minimize the potential for vapor intrusion into the building using a sub-slab venting system. The VIMS constructed at the Seoul Food building operates as a passive sub-slab vapor extraction system installed within the building with wind-driven turbine ventilators located above the building roofline to enhance extraction of sub-slab vapors and discharge the vapors above the building. The ventilators also allow normal passive VIMS exhaust during times when there is only limited wind. As indicated in the VIMP, portions of the approximately 4-inch-thick concrete slab were removed and replaced for the installation of utilities and areas specific to the commercial tenants. For the concrete replacement inside the existing building, gravel and the 15-mil vapor barrier were installed prior to the installation of the new concrete slab sections. Details regarding the VIMS installation and components for the Seoul Food building are described in the VIMS Installation Completion Report (Install Report) dated April 4, 2022. VIMS as-built drawings from the Installation Report for the 421 E. 26th Street building are included as Appendix B. 3 https://harthick.sharepoint.com/sites/MasterFiles-1/Shared Documents/AAA-Master Projects/PAMAKA - PAM/PAM-003 N. Davidson & E. 26th/VIMS/421 E 26 St/Post-Occupancy/2024-01 IAS/Text/24003_North Davidson II_VIMS Post-Occ Report_421 N. 26th_3.29.24 2.docx In accordance with the DEQ-approved VIMP, one pre-occupancy sampling event and two semi- annual (twice-a-year) post-occupancy confirmation indoor air sampling events are required to evaluate the effectiveness of the VIMS. The Seoul restaurant opened to customers in October 2022. H&H performed the first semi-annual post-occupancy sampling event at the Seoul Food building in May 2023. May 2023 post-occupancy sub-slab vapor and indoor air monitoring data are included in Appendix A. H&H performed the second semi-annual post-occupancy sampling event in January 2024. The VIMS sampling activities were conducted in general accordance with the DEQ-approved VIMP and the DEQ Division of Waste Management (DWM) Vapor Intrusion Guidance dated March 2018. A summary of the January 2024 post-occupancy semi-annual sampling methods and results is provided in Section 2.0, and a summary, conclusions, and recommendations based on the results of post-occupancy sampling are provided in Section 3.0. 4 https://harthick.sharepoint.com/sites/MasterFiles-1/Shared Documents/AAA-Master Projects/PAMAKA - PAM/PAM-003 N. Davidson & E. 26th/VIMS/421 E 26 St/Post-Occupancy/2024-01 IAS/Text/24003_North Davidson II_VIMS Post-Occ Report_421 N. 26th_3.29.24 2.docx 2.0 VIMS Post-Occupancy Sampling Activities H&H performed the second semi-annual post-occupancy indoor air sampling in January 2024 to evaluate the efficacy of the VIMS at the Seoul building. The indoor air assessment activities were conducted in accordance with the DEQ-approved VIMP and the DEQ DWM Vapor Intrusion Guidance dated March 2018. A description of the sampling activities and results is provided below. 2.1 Building Survey Activities Prior to the sampling, H&H completed a survey in the building to identify materials used or stored in the building that may contain compounds of concern (COCs). No storage or use of chemicals with COCs, such as TCE or other chlorinated solvents, was identified during the sampling event. However, oven cleaner, isopropanol, and bleach were present inside the building but were not seen to be used during the sampling event. Although not observed during the indoor air sampling event, H&H understands that commercial cleaning products/disinfectants are used as part of routine maintenance activities throughout the building. The building was operating under normal conditions during the sampling event. Indoor air samples were collected with ingress and egress activities minimized to the extent possible. Therefore, H&H began the indoor air sampling event prior to business operations to minimize the amount of ingress and egress by customers; however, over half of the indoor air sampling event occurred during normal business hours when customers entered and exited the building, which is normal operating conditions for this business. A copy of the indoor air building survey completed during the day of sampling is provided as Appendix C. 2.2 Indoor Air Sampling Methodology On January 18, 2024, H&H collected three indoor air samples (IAS-1 through IAS-3) for laboratory analysis within the 421 E. 26th Street building. An upwind exterior background air sample, IAS-BKG, was collected concurrently with the indoor air sampling event to evaluate 5 https://harthick.sharepoint.com/sites/MasterFiles-1/Shared Documents/AAA-Master Projects/PAMAKA - PAM/PAM-003 N. Davidson & E. 26th/VIMS/421 E 26 St/Post-Occupancy/2024-01 IAS/Text/24003_North Davidson II_VIMS Post-Occ Report_421 N. 26th_3.29.24 2.docx compound concentrations in ambient outdoor air. Additionally, one duplicate indoor air sample, IAS-DUP, was collected along with the parent indoor air sample utilizing a laboratory-supplied stainless-steel sampling “T”, which allows for the simultaneous collection of two indoor air samples from a single location. The duplicate sample was collected from concurrent sampling for the pavilion structure but is included in the lab report (Appendix D). The indoor air sample and background air sample locations are shown on Figure 3. The indoor air samples were collected using laboratory-supplied 6-liter stainless steel Summa sample canisters connected to in-line flow controllers with a vacuum gauge. The Summa canisters used for the indoor air samples were individually-certified by the laboratory, while the Summa canister for the background air sample was batch-certified by the laboratory. The flow controllers were calibrated by the laboratory to allow for sample collection over an approximate 8-hour period, which is consistent with a non-residential use scenario. Teflon tubing was connected to the flow controller with the Teflon tubing elevated by a laboratory stand so that the sample intake point was positioned approximately 5 ft above grade (typical breathing zone height) when the sample canister was set on its base. During sampling activities, indoor/outdoor air pressure differential was measured near the start, middle, and end of the sampling period using a manometer sensitive to 0.001 inches of water column (in-WC). In addition, barometric pressure, exterior wind speed, exterior wind direction, and indoor/outdoor temperature were recorded near the start, middle, and end of the sampling period. Results of differential pressure measurements indicated that the indoor pressure was consistently higher (by as much as 0.022 in-WC) than the outdoor pressure during the sampling event. A summary of the field measurement data collected at the time of the indoor air sampling event is included in Appendix C. For QA/QC purposes, H&H personnel periodically monitored the sample canisters to monitor vacuum pressures and prevent tampering or damage during the sampling event. Vacuum was measured in each of the Summa canisters prior to and after sampling activities. Per laboratory standard operating procedures, a vacuum of approximately 5 to 8 inches of mercury (inHg) was maintained within the canisters at the conclusion of the sampling event. After approximately 8 6 https://harthick.sharepoint.com/sites/MasterFiles-1/Shared Documents/AAA-Master Projects/PAMAKA - PAM/PAM-003 N. Davidson & E. 26th/VIMS/421 E 26 St/Post-Occupancy/2024-01 IAS/Text/24003_North Davidson II_VIMS Post-Occ Report_421 N. 26th_3.29.24 2.docx hours of sampling, the samples were closed to air intake, properly labeled with the sample identification, date, time, starting and ending vacuums, and 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 select volatile organic compounds (VOCs) by Environmental Protection Agency (EPA) Method TO-15. The select list of VOCs is included in Appendix D. 2.3 Indoor Air Sampling Results A tabular summary of the semi-annual indoor air sample analytical results is provided in Table 1. The indoor air sample laboratory analytical results were compared to the DEQ DWM Non- Residential Indoor Air Screening Levels (IASLs) dated February 2024. A copy of the laboratory analytical report and chain of custody record is included in Appendix D. For comparison, historical indoor air data for the Seoul building along with the January 2024 data is included in Table 1, and previous sub-slab vapor sampling results are included in Appendix A. Laboratory analytical results indicate the presence of several VOCs in the January 2024 indoor air samples at concentrations exceeding the laboratory method detection limits (MDLs). Chloroform was detected in all three indoor air samples (up to 18.8 µg/m3) at concentrations above the Non- Residential IASL of 0.53 µg/m3. Benzene was detected in sample IAS-2 at a concentration of 2.26 µg/m3, which exceeds the Non-Residential IASL of 1.6 µg/m3. None of the remaining VOCs were detected at concentrations above the Non-Residential IASLs. TCE, the primary COC on the Site, was not detected above the laboratory MDLs in any of the indoor air samples collected during the January 2024 semi-annual sampling event; however, TCE was detected at a concentration of 1.02 J µg/m3 in the ambient outdoor background sample during the sampling event. Risk Calculations The DEQ DWM IASLs used for comparison to the laboratory analytical results are conservative and based on a target carcinogenic risk (TCR) for potential carcinogenic risks of 1 x 10-6 and a 7 https://harthick.sharepoint.com/sites/MasterFiles-1/Shared Documents/AAA-Master Projects/PAMAKA - PAM/PAM-003 N. Davidson & E. 26th/VIMS/421 E 26 St/Post-Occupancy/2024-01 IAS/Text/24003_North Davidson II_VIMS Post-Occ Report_421 N. 26th_3.29.24 2.docx non-carcinogenic hazard quotient (HQ) of 0.2. The DEQ acceptable cumulative lifetime incremental cancer risk (LICR) is 1 x 10-4 or less, and the acceptable non-carcinogenic hazard index (HI) is 1.0 or less. The HI is the sum of HQs for each detected compound. To further evaluate potential health risks posed by indoor air conditions based on January 2024 indoor air sample data, H&H used DEQ’s Risk Calculator dated February 2024. To simulate a hypothetical “worst-case” non-residential use scenario, H&H input the highest concentration of each compound that was detected in the three indoor air samples into the DEQ Risk Calculator. Results of the risk calculations indicate a cumulative LICR of 3.7 x 10-5 and a calculated cumulative HI of 0.17, which are below the DEQ acceptable levels of 1 x 10-4 for the cumulative LICR and 1.0 for the cumulative HI. This indicates the VOC concentrations in indoor air do not pose unacceptable risk to the occupants of the Seoul Food Company building. The DEQ Risk Calculator input/output forms are provided as Appendix E. 2.4 Vapor Intrusion Evaluation The January 2024 indoor air sample results and risk calculations presented above indicate that VOC concentrations are not present in indoor air at levels that would pose unacceptable risks to the commercial occupants of the building. Additionally, a comparison and evaluation of notable contaminants and findings from the pre-occupancy and two post-occupancy sampling events are provided in the following paragraphs.  TCE, the primary COC on the Site, has not been detected in indoor air samples above the MDL at the Seoul Food Company building during any of the three sampling events after the VIMS was installed. TCE was previously detected in two sub-slab vapor samples during the May 2023 sampling event. Therefore, the data indicates potential risk associated with sub-slab vapor TCE concentrations is being mitigated by the VIMS, as designed.  The results of historical assessments and pre-occupancy sampling (Appendix A) did not identify chloroform as a COC within the Seoul (421 E. 26th Street) building footprint. Chloroform could be a constituent of common cleaning products or a by-product from cleaning with municipally-treated tap water. 8 https://harthick.sharepoint.com/sites/MasterFiles-1/Shared Documents/AAA-Master Projects/PAMAKA - PAM/PAM-003 N. Davidson & E. 26th/VIMS/421 E 26 St/Post-Occupancy/2024-01 IAS/Text/24003_North Davidson II_VIMS Post-Occ Report_421 N. 26th_3.29.24 2.docx  Although benzene was detected in sample IAS-2 above the Non-Residential IASL during the January 2024 sampling event, benzene is a common component of building materials and petroleum-based lubricants or other maintenance-related chemicals. In addition, historical sub-slab vapor data do not indicate benzene is a COC in sub-slab vapor at the Site. Therefore, the benzene in IAS-2 is likely in-part attributable to an indoor source. Even with the chloroform and benzene detections above the IASL during the January 2024 indoor air sampling event, the results of cumulative risk calculations indicate the indoor air conditions in the Seoul Food building are acceptable for non-residential use. Based on the results of indoor air sampling and risk calculations, the VIMS is effectively mitigating potential vapor intrusion risks from Site contaminants to the occupants of the 421 E. 26th Street Seoul Food Company building. 9 https://harthick.sharepoint.com/sites/MasterFiles-1/Shared Documents/AAA-Master Projects/PAMAKA - PAM/PAM-003 N. Davidson & E. 26th/VIMS/421 E 26 St/Post-Occupancy/2024-01 IAS/Text/24003_North Davidson II_VIMS Post-Occ Report_421 N. 26th_3.29.24 2.docx 3.0 Summary, Conclusions, and Recommendations H&H has completed the second post-occupancy semi-annual indoor air sampling event at the Seoul Food Company building located at 421 E. 26th Street on the North Davidson II Brownfields Property in Charlotte, North Carolina. The results of the post-occupancy activities indicate the following:  In January 2024, benzene and chloroform were detected in one or more indoor air samples above the Non-Residential IASLs. Chloroform could be a constituent of common cleaning products or a by-product from cleaning with municipally-treated tap water. Benzene is a common component of building materials and petroleum-based lubricants or other maintenance-related chemicals. In addition, historical sub-slab vapor data do not indicate benzene is a COC in sub-slab vapor at the Site. Therefore, the benzene in indoor air is likely in-part attributable to an indoor source.  The main Site contaminant of concern, TCE, was not detected in any of the indoor air samples above the laboratory MDLs.  Cumulative risk calculations for both post-occupancy sampling events indicate that carcinogenic and non-carcinogenic risk levels are below DEQ acceptable levels for a non- residential use scenario.  Based on the installed VIMS and the results of indoor air sampling and risk calculations, the VIMS is effectively mitigating potential vapor intrusion risks to the occupants of the 421 E. 26th Street Seoul Food Company building. Recommendations In accordance with the VIMP and based on the results of two post-occupancy sampling events, H&H requests termination of post-occupancy VIMS efficacy sampling at the 421 E. 26th Street Seoul Food Company building. Tables Table 1 Summary of VIMS Post-Installation Indoor Air Analytical DataNorth Davidson II Brownfields Site 421 East 26th StreetBrownfields Project No. 24003-20-060 Charlotte, North Carolina H&H Job No. PAM-003 Evaluation Area Sample ID BAS-1 BKG BKG-051723 IAS-BKG Sample Date 1/18/2024 2/19/2022 5/17/2023 1/18/2024 2/19/2022 3/12/2022 5/17/2023 1/18/2024 2/19/2022 3/12/2022 5/17/2023 1/18/2024 Sample Type VOCs (TO-15) µg/m3 Acetone 21.3 22.3 14.4 14.9 10.9 20.8 17.9 16.4 17.1 22.0 16.7 10.6 B 7.23 7.39 20.1 8.25 B NE Benzene 0.594 J 0.626 J 0.383 J 0.370 J 0.916 J 0.617 J 0.408 J 2.26 0.623 J 0.486 J 0.389 J 1.09 J 0.492 J 0.454 J 0.421 J 0.888 J 1.6 Carbon Disulfide <0.0608 3.04 J 1.31 J,B <0.060 0.538 J <0.0608 <0.60 0.666 J <0.0608 0.411 J <0.060 0.579 J <0.0608 <0.0608 <0.060 0.890 J 610 Carbon Tetrachloride <0.155 0.579 J <0.155 <0.155 <0.155 0.535 J <0.155 <0.155 0.591 J 0.541 J <0.155 <0.155 0.560 J 0.591 J <0.155 <0.155 2.0 Chloroform <0.0864 <0.0864 3.17 2.62 1.27 J <0.0864 7.56 18.8 <0.0864 <0.0864 1.34 J 1.62 J <0.0864 <0.0864 <0.086 <0.086 0.53 Chloromethane 0.807 J 0.847 J 0.753 J 0.768 J 0.885 J 0.814 J 0.755 J 0.900 J 0.797 J <0.0673 0.689 J 0.852 J 0.807 J 0.789 J 0.747 J 0.836 J 79 Cyclohexane 35.2 36.3 <0.161 <0.161 <0.161 14.4 <0.161 <0.161 13.1 119 <0.161 <0.161 <0.161 <0.161 <0.161 <0.161 5,300 Dichlorodifluoromethane 2.95 2.94 2.53 2.49 2.76 2.94 2.35 J 2.84 2.90 <0.134 2.31 J 2.84 2.85 3.02 2.37 J 2.80 88 cis-1,2-Dichloroethene <0.0955 <0.0955 <0.095 <0.095 <0.095 <0.0955 <0.095 <0.095 1.16 J <0.0955 <0.095 <0.095 <0.0955 <0.0955 <0.095 <0.095 35 Ethyl Acetate (3)NA NA 2.37 2.32 NA NA 2.57 NA NA NA 0.724 J NA NA NA <0.136 NA 61 Ethanol NA NA NA NA 169 NA NA 1,230 NA 6.28 NA 236 NA 10.8 NA NA NE Ethylbenzene 2.20 2.32 <0.106 <0.106 0.777 J 3.89 <0.106 0.638 J 5.44 1.54 J <0.106 0.451 J <0.106 <0.106 <0.106 0.343 J 4.9 4-Ethyltoluene 35.0 36.9 <0.128 <0.128 0.545 J 82.7 <0.128 0.486 J 228 4.94 0.408 J 0.511 J <0.128 <0.128 <0.128 <0.128 NE Heptane 8.34 8.07 0.631 J 0.688 J 0.495 J 3.50 0.639 J 1.06 J 3.50 56.6 0.418 J 0.557 J <0.143 0.652 J 0.549 J 0.454 J 350 n-Hexane 8.28 8.22 0.641 J 0.613 J 0.666 J 13.6 0.613 J 0.909 J 12.1 8.46 0.563 J 0.870 J 0.426 J 0.462 J 0.807 J 0.609 J 610 Isopropyl Alcohol 4.08 J 4.40 J 1.60 J 1.37 J 26.8 4.45 J 0.978 J 44.0 5.31 9.25 0.235 J 54.4 0.868 J,B 1.53 J <0.139 3.13 J,B 180 Methyl Ethyl Ketone (MEK)6.10 5.73 1.80 1.86 1.19 J 8.71 2.06 2.00 8.80 2.46 1.42 J 1.15 J 0.991 J 0.843 J 1.05 J 2.90 4,400 Methylene Chloride 1.22 J 1.39 J <0.488 <0.488 1.40 J 1.55 J <0.488 2.07 1.91 4.33 <0.488 1.82 0.910 J 4.87 <0.488 1.23 J 530 Naphthalene 2.77 2.82 <0.183 <0.183 <0.183 3.07 <0.183 <0.183 4.09 <0.183 <0.183 <0.183 <0.183 <0.183 3.89 <0.183 0.36 Propene 8.84 8.65 <0.242 <0.242 <0.242 5.78 <0.242 <0.242 <0.242 <0.242 <0.242 <0.242 <0.242 <0.242 <0.242 <0.242 2,600 Styrene 1.84 J 1.96 J 2.39 2.34 0.438 J 2.94 1.35 J 0.724 J 2.42 0.890 J 1.38 J 0.383 J <0.124 <0.124 <0.124 <0.124 880 Tetrachloroethene <0.181 0.577 J <0.181 0.678 J 1.57 J <0.181 <0.181 0.698 J <0.181 <0.181 <0.181 1.18 J <0.181 <0.181 <0.181 <0.181 35 Tetrahydrofuran 3.91 4.14 0.386 J 0.468 J 0.327 J 8.72 0.353 J 0.480 J 3.85 1.39 J <0.107 0.271 J 0.646 J 0.628 J <0.107 2.83 1,800 Toluene 4.13 4.21 1.39 J 1.33 J 1.91 5.00 2.40 2.90 3.93 26.2 1.23 J 2.69 0.795 J 0.701 J 1.67 J 2.08 4,400 Trichloroethene <0.199 <0.199 <0.199 <0.199 <0.199 <0.199 <0.199 <0.199 <0.199 <0.199 <0.199 <0.199 <0.199 <0.199 <0.199 1.02 J 1.8 Trichlorofluoromethane 1.44 J 1.60 J 1.70 J 1.78 J 1.69 J 1.53 J 1.46 J 1.86 J 1.62 J 1.49 J 1.39 J 1.71 J 1.59 J 1.51 J 1.53 J 1.64 J NE 1,2,4-Trimethylbenzene 153 161 1.94 J 1.92 J 3.47 1,460 0.560 J 3.98 4,310 29.8 2.35 J 3.68 0.634 J 1.51 J <0.209 <0.209 53 1,3,5-Trimethylbenzene 46.2 48.1 0.722 J 0.653 J 1.08 J 121 <0.236 1.32 J 1,300 11.2 0.806 J 1.17 J <0.236 0.452 J <0.236 <0.236 53 o-Xylene 5.35 5.68 <0.157 <0.157 1.04 J 11.0 <0.157 0.833 J 24.4 2.21 <0.157 0.521 J <0.157 <0.157 <0.157 0.351 J 88 m,p-Xylene 7.34 7.50 <0.217 <0.217 3.26 J 12.9 <0.217 2.33 J 15.1 5.39 J,B <0.217 1.23 J 0.426 J 0.408 J,B <0.217 0.903 J 88 Xylene (Total)12.7 13.2 <0.157 <0.157 4.30 J 23.9 <0.157 3.16 J 39.5 5.39 J,B <0.157 1.75 J 0.426 J 0.408 J,B <0.157 1.25 J 88 DEQ Cumulative Risk Calculator (2) Sample Date (Month, Year) Carcinogenic Risk (LICR) Non-Carcinogenic Hazard Index (HI) Notes: 1) North Carolina Department of Environmental Quality (DEQ) Division of Waste Management (DWM) Vapor Intrusion Indoor Air Screening Levels (IASLs) dated February 2024 and based upon TCR = 1 x 10-6 and THQ = 0.2.2) NCDEQ DWM Cumulative Risk Calculator. Cumulative LICR and HI calculated using the worst-case scenario and compared to DEQ and EPA acceptable risk levels for carcinogenic and non-carcinogenic risks. Risks calculated using the Cumulative Risk Calculator dated January 2022 for the 2022 sampling event, dated January 2023 for the May 2023 sampling events, and dated February 2024 for the January 2024 sampling event. 3) Analytes are not included in the site-specific VOC list. Green highlighted results are from the most recent sampling event. Concentrations are reported in micrograms per cubic meter (µg/m3). Compound concentrations are reported to the laboratory method detection limits. Laboratory analytical method is shown in parentheses. Only compounds detected in at least one sample are shown in the above table. Bold values indicate an exceedance of DWM Non-Residential IASL. TCR = Target Cancer Risk; THQ = Non-Carcinogenic Target Hazard Quotient; LICR = Lifetime Incremental Cancer Risk; HI = Hazard Index 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 concentration. B = Compound was detected in the laboratory method blank. 1.3 x 10-5 1.4 x 10-5 3.7 x 10-5 <1 x 10-4 22 0.056 0.17 <1.0 Non-Residential - Indoor Air Acceptable Risk LevelsFebruary 2022 May 2023 January 2024 Seoul Food Company - 421 East 26th Street 5/17/2023 Indoor Air Non-Residential IASLs (1) (µg/m3) Background Air 2/19/2022 IAS-3IAS-1 / IAS-DUP IAS-2 https://harthick.sharepoint.com/sites/MasterFiles-1/Shared Documents/AAA-Master Projects/PAMAKA - PAM/PAM-003 N. Davidson & E. 26th/VIMS/421 E 26 St/Post-Occupancy/2024-01 IAS/Tables/Table_Seoul Results_2022-20242/21/2024 Table 1 (Page 1 of 1) Hart & Hickman, PC Figures 0 2000 4000 APPROXIMATE SCALE IN FEETN U.S.G.S. QUADRANGLE MAP QUADRANGLE 7.5 MINUTE SERIES (TOPOGRAPHIC) CHARLOTTE EAST, NORTH CAROLINA 1991 TITLE PROJECT SITE LOCATION MAP NORTH DAVIDSON II BROWNFIELDS PROPERTY2315 N. DAVIDSON STREET & 421 E. 26TH STREETCHARLOTTE, NORTH CAROLINA DATE: JOB NO: REVISION NO: FIGURE: 5-18-20 0 1PAM-003 SITE REVISION NO. 0 JOB NO. PAM-003 DATE: 8-7-23 FIGURE NO. 2 NORTH DAVIDSON II BROWNFIELDS PROPERTY2315 N. DAVIDSON ST. & 421 E. 26TH ST. CHARLOTTE, NORTH CAROLINA SITE LAYOUT MAP LEGEND SITE PROPERTY BOUNDARY FORMER RAIL SPUR LITTLE SUGAR CREEK DRAINAGE FEATURE 2923 South Tryon Street-Suite 100Charlotte, North Carolina 28203704-586-0007(p) 704-586-0373(f)License # C-1269 / #C-245 Geology LYN X L I G H T R A I L N. DA V I D S O N S T R E E T E 26 T H S T R E E T JORDA N P L A C E N. BR E V A R D S T R E E T NODA SELF STORAGE(FORMER U.S. TEXTILE CORP.)(2401 N. DAVIDSON STREET) YANDLE METAL SHOP(2414 N. DAVIDSON STREET) YANDLE METAL SHOP(FORMER GENERAL LATEX &CHEMICAL CORP.)(2414 N. DAVIDSON STREET) COLLECTIVE APARTMENT COMPLEX(FORMER R.H. BOULIGNY, INC.)(2300 N. DAVIDSON STREET) NODA BREWING COMPANY (FORMER GIBBS ELECTROPLATING) (2229 N. DAVIDSON STREET) PERFORMANCE LOGISTICS (511 E. 25TH STREET) WOODTECH INTERIORS, INC(2228 N. BREVARD STREET) SUPERIOR STONE OF THESOUTHEAST(2310 N. BREVARD STREET) FORMER APPLIED RESEARCH GROUP (2221 N. DAVIDSON STREET) RHINO MARKET & DELI ANDFREE RANGE BREWING(2320 N. DAVIDSON STREET) NOTES: 1. AERIAL IMAGERY AND BASE DATA OBTAINED FROMMECKLENBURG COUNTY GIS, 2023. APPROXIMATE LOCATION OF BUILDING SLAB EXTENSION OFFI C E S P A C E (EXI S I T I N G B U I L D I N G ) OPEN-AIR PATIO SPACE 421 E. 26TH STREETPARCEL 2315 N. DAVIDSON STREETPARCEL UDM F O O D H A L L (EXI S T I N G B U I L D I N G ) PAVILION(NEW CONSTRUCTION) SEO U L F O O D C O M P A N Y (E X I S T I N G B U I L D I N G ) S:\ A A A - M a s t e r P r o j e c t s \ P A M A K A - P A M \ P A M - 0 0 3 N . D a v i d s o n & E . 2 6 t h \ V I M S \ F i g u r e s \ 2 0 2 3 F i g u r e 2 \ S i t e M a p _ R 1 _ 2 0 2 3 . d w g POSP F-2 F-3 F-4 F-1 F-6 MP-2 MP-1 MP-4 MP-6 MP-5 MP-1 MP-7 MP-9 MP-8 IAS-1 IAS-2 IAS-3 BKG-051723 F-6 MP-3 F-5 F-7 REVISION NO. 0 JOB NO. PAM-003 DATE: 8-14-22 FIGURE NO. 3 NORTH DAVIDSON II BROWNFIELDS PROPERTY (BROWNFIELDS NO. 24003-02-060) SEOUL FOOD COMPANY 421 EAST 26TH STREET CHARLOTTE, NORTH CAROLINA SAMPLE LOCATION MAP - JANUARY 2024 2923 South Tryon Street-Suite 100Charlotte, North Carolina 28203704-586-0007(p) 704-586-0373(f)License # C-1269 / #C-245 Geology LEGEND EXISTING EXTERIOR WALL AND EXTENTS OF EXISTING CONCRETE SLAB 3" SCH 40 PVC SOLID PIPE SET WITHIN TRENCH WITH SOIL BACKFILL AREA OF NEW CONCRETE WITH MOISTURE BARRIER(STEGO-WRAP) 3" SCH 40 SLOTTED PIPE SET WITHIN GRAVEL BASE BELOW AREA OF NEW CONCRETE 3" SCH 40 PVC RISER WITH CONNECTED TO TRENCH INDIVIDUAL SUCTION POINT WITH 3" SCH 40 PVC RISER INDIVIDUAL SUCTION POINT WITH 3" SCH 40 PVC RISER CONNECTED TO VIMS TRENCH VACUUM MONITORING POINT(1" SCH 40 PVC SLOTTED PIPE SET WITHIN GRAVEL WITHCLEAN-OUT FLOOR COVER) SUCTION TRENCH CLEAN-OUT VIMS ELECTRIC FAN DISCHARGE ON ROOF OFF-SET FROM RISER HORIZONTAL 3" SCH 40 PVC PIPING BELOW CEILING FOR FAN OFF-SET FROM RISER OUTDOOR (OPEN AIR) PATIO & BAR APPROXIMATE LOCATION OF SUB-SLAB VOID (FILLED WITH GRAVEL) INDOOR AIR OR EXTERIOR BACKGROUND SAMPLE LOCATION MONITORING POINT SAMPLED DURING MAY 2023 SEMI-ANNUAL SAMPLING EVENT S:\ A A A - M a s t e r P r o j e c t s \ P A M A K A - P A M \ P A M - 0 0 3 N . D a v i d s o n & E . 2 6 t h \ V I M S \ 4 2 1 E 2 6 S t \ P o s t - O c c u p a n c y \ 4 2 1 E . 2 6 t h S t r e e t _ s a m p l e l o c a t i o n m a p . d w g , F I G 2 , 8 / 1 4 / 2 0 2 3 1 0 : 4 7 : 5 3 A M , mv a w t e r Appendix A Excerpts from Previous Assessment Activities MW-10 IAS-1/SS-1 MW-1 MW-3 SB-1 SS-6 IAS-3/SS-3 IAS-4/SS-4 SS-5 MW-2 SB-2 SB-3 SB-4 BKG-1 MW-4 SB-5 IAS-2/SS-2 SS-7 SB-9 SS-8 SS-9 SS-10 SS-13 SS-12 SB-7 SB-6 SB-8 SW-2 SW-1 SS-11 SED-1 REVISION NO. 0 JOB NO. PAM-003 DATE: 9-28-20 FIGURE NO. A-1 NORTH DAVIDSON II BROWNFIELDS PROPERTY2315 N. DAVIDSON STREET & 421 E. 26TH STREET CHARLOTTE, NORTH CAROLINA SAMPLE LOCATION MAP LEGEND SITE PROPERTY BOUNDARY FORMER RAIL SPUR LITTLE SUGAR CREEK DRAINAGE FEATURE EXISTING GROUNDWATERMONITORING WELL SOIL BORING SUB-SLAB VAPOR SAMPLE POINT CO-LOCATED SUB-SLAB VAPOR AND INDOOR AIR SAMPLE POINT SURFACE WATER SAMPLELOCATION SEDIMENT SAMPLE LOCATION ABANDONED MONITORING WELL 2923 South Tryon Street-Suite 100Charlotte, North Carolina 28203704-586-0007(p) 704-586-0373(f)License # C-1269 / #C-245 Geology LYN X L I G H T R A I L N. DA V I D S O N S T R E E T E 26 T H S T R E E T JORDA N P L A C E APPROXIMATE LOCATIONOF FORMER LUMBERWAREHOUSE APPROXIMATE LOCATION OF FORMER AUTO REPAIR SHOP N. BR E V A R D S T R E E T MW-5 SB-1 MW-1 NOTES: 1) MONITORING WELLS MW-1 THROUGH MW-5 WEREINSTALLED IN APRIL 2016 BY SUMMIT ENGINEERING. 2) SOIL SAMPLES WERE COLLECTED BY H&H ON 3/5/-6/2020 AND 8/11-12/2020. 3) SUB-SLAB VAPOR SAMPLES COLLECTED BY H&H ON8/8/2019 AND 8/11/2020. 4) INDOOR AIR SAMPLES COLLECTED BY H&H ON11/12/2019. 5) SEDIMENT AND SURFACE WATER SAMPLESCOLLECTED BY H&H ON 8/11/2020. IAS-1/SS-1 MW-10 SS-7 SW-1 SED-1 S:\ A A A - M a s t e r P r o j e c t s \ P A M A K A - P A M \ P A M - 0 0 3 N . D a v i d s o n & E . 2 6 t h \ E M P \ F i g u r e s \ S i t e M a p _ R 1 . d w g , 1 2 / 2 2 / 2 0 2 0 1 : 4 2 : 3 2 P M , D W G T o P D F . p c 3 Table A-1 Summary of Groundwater Analytical Results North Davidson II Brownfields Property 2351 N. Davidson Street and 421 E. 26th Street Charlotte, North Carolina H&H Job No. PAM-003 Sample ID MW-1 MW-2 MW-DUP-1 MW-3 MW-4 MW-5 Date 3/5/2020 3/5/2020 3/5/2020 3/6/2020 Area of Potential Concern Former Lumber Shed Former Junkyard Area Former Auto Repair Shop Upgradient Portion of Site VOCs (8260D) Chloroform <2.3 <2.3 <2.3 <11.7 <11.7 3.0J 70 0.81 3.6cis-1,2-Dichloroethene <0.29 <0.29 <0.29 2.2J <1.5 <0.29 70 NS NSDiisopropyl ether <0.22 <0.22 <0.22 12.8 <1.1 <0.22 70 1,400 5,900 Methyl tert-butyl ether <0.28 <0.28 <0.28 636 <1.4 <0.28 20 450 2,000 Trichloroethene <0.22 <0.22 <0.22 110 669 <0.22 3.0 1.0 4.4 SVOCs (8270E)-- -- -- RCRA Metals (6020B, 7470A) Arsenic 0.395J 0.631J <0.250 0.403J 0.901J <0.250 10 -- -- Arsenic (Dissolved)NA <0.250 <0.250 <0.250 NA NA 10 -- -- Barium 92.0 77.0 22.4 28.9 35.3 78.6 700 -- -- Barium (Dissolved)NA 22.5 22.5 29.6 NA NA 700 -- -- Cadmium <0.160 <0.160 <0.160 0.424J <0.160 <0.160 2.0 -- -- Cadmium (Dissolved)NA <0.160 <0.160 <0.160 NA NA 2.0 -- -- Chromium 1.15J 17.8 1.01J 13.5 394 2.35 10 -- -- Chromium (Dissolved)NA 0.689J 0.738J 1.01J NA NA 10 -- -- Lead 0.970J 2.02 0.482J 1.01J 0.745J 1.21J 15 -- -- Lead (Dissolved)NA <0.240 0.284J <0.240 NA NA 15 -- -- Selenium <0.380 <0.380 <0.380 0.415J 1.33J <0.380 20 -- -- Selenium (Dissolved)NA <0.380 <0.380 <0.380 NA NA 20 -- -- Silver <0.310 <0.310 <0.310 <0.310 <0.310 <0.310 20 -- -- Silver (Dissolved)NA <0.310 <0.310 <0.310 NA NA 20 -- -- Mercury <0.0490 <0.0490 <0.0490 <0.0490 <0.0490 <0.0490 1.0 0.18 0.75 Mercury (Dissolved)NA <0.0490 <0.0490 <0.0490 NA NA 1.0 0.18 0.75 Notes: 1) North Carolina Department of Environmental Quality (DEQ) 15A NCAC 02L.0202 Groundwater Standards (2L Standards) (April 2013) 2) NC DEQ Division of Waste Management (DWM) Residential Vapor Intrusion Groundwater Screening Levels (GWSLs) (July 2020) 3) NC DEQ DWM Non-Residential Vapor Intrusion GWSLs (July 2020) With the exception of metals, only constituents detected in at least one sample are shown. Concentrations are reported in micrograms per liter (µg/L). Compound concentrations are reported to the laboratory method detection limits Laboratory analytical methods are shown in parentheses. Bold concentrations exceed the DEQ 2L Standard and/or the Residential GWSL. Underlined concentrations exceed the DEQ 2L Standard and the Non-Residential GWSL. VOCs = volatile organic compounds; SVOCs = semi-volatile organic compounds, RCRA = Resource Conservation and Recovery Act NA = not analyzed; NS = not specified; -- = not applicable J = estimated value between the laboratory method detection limit and the laboratory reporting limit All Below Laboratory Method Detection Limits NC 2L Groundwater Standards (1) Residential GWSL(2) Non-Residential GWSL(3) 3/6/2020 Former Junkyard Area S:\AAA-Master Projects\PAMAKA - PAM\PAM-003 N. Davidson & E. 26th\EMP\Data Tables\GW Data Table_10-12-20 10/19/2020 Table A-1 Hart & Hickman, PC Table A-2Summary of Sub-slab Vapor Analytical Results North Davidson II Brownfields Property2351 N. Davidson Street and 421 E. 26th Street Charlotte, North CarolinaH&H Job No. PAM-003 Sa m p l e I D Sa m p l e L o c a t i o n Sa m p l e D a t e An a l y t i c a l M e t h o d Ac e t o n e Be n z e n e 2-B u t a n o n e ( M E K ) Ca r b o n D i s u l f i d e Ca r b o n T e t r a c h l o r i d e Ch l o r o f o r m Ch l o r o m e t h a n e Cy c l o h e x a n e 1,2 - D i c h l o r o b e n z e n e 1,4 - D i c h l o r o b e n z e n e Dic h l o r o d i f l u o r o m e t h a n e (F r e o n 1 2 ) cis - 1 , 2 - D i c h l o r o e t h y l e n e Et h a n o l Et h y l b e n z e n e 4- E t h y l t o l u e n e He p t a n e He x a n e 2- H e x a n o n e ( M B K ) Is o p r o p a n o l Me t h y l e n e C h l o r i d e 4- M e t h y l - 2 - p e n t a n o n e ( M I B K Na p h t h a l e n e Pr o p e n e St y r e n e Te t r a c h l o r o e t h e n e Te t r a h y d r o f u r a n To l u e n e Tr i c h l o r o e t h e n e Tr i c h l o r o f l u o r o m e t h a n e (F r e o n 1 1 ) 1,2 , 4 - T r i m e t h y l b e n z e n e 1,3 , 5 - T r i m e t h y l b e n z e n e m& p - X y l e n e o- X y l e n e SS-1 8/8/2019 100J <2.6 <9.2 <4.3 <4.1 260 <2.8 <4.9 <5.8 <7.3 <4.3 <3.2 120J <5.0 <6.0 <4.8 <12 <4.8 <6.0 <8.4 <3.9 <8.0 <3.4 <5.3 860 <3.9 <3.9 91,000 <6.5 <6.3 <6.2 <10 <5.4 SS-2 8/8/2019 120 0.5J 7.2J <0.43 0.63J 1.9 <0.28 <0.49 <0.58 <0.73 2.5 <0.32 130 <0.50 <0.60 <0.48 <1.2 <0.48 5.4J <0.84 <0.39 0.86J <0.34 <0.53 19 <0.39 0.89 27 2.0J <0.63 <0.62 <1.0 <0.54 SS-3 220 0.33J 5.7J 4.3J <0.41 1.3 <0.28 <0.49 <0.58 <0.73 <0.43 <0.32 130 <0.50 <0.60 <0.48 <1.2 <0.48 16J <0.84 <0.39 <0.80 <0.34 <0.53 3.2 <0.39 0.65J <0.43 1.9J <0.63 <0.62 <1.0 <0.54 DUP-2/SS-3 230 0.42J 7.5J 5.3J <0.41 <0.36 <0.28 <0.49 <0.58 <0.73 2.3 <0.32 110 <0.50 <0.60 <0.48 <1.2 <0.48 11J <0.84 <0.39 0.86J <0.34 <0.53 3.1 <0.39 0.83 <0.43 1.9J <0.63 <0.62 <1.0 <0.54 SS-4 8/8/2019 260 1.3 9.5J 25 <0.41 <0.36 <0.28 <0.49 <0.58 <0.73 2.9 <0.32 110 2.2 2.4 <0.48 <1.2 <0.48 12J 0.85J <0.39 0.94J 17 <0.53 <0.75 <0.39 3.2 <0.43 1.0J 14 8.9 8.9 3.6 SS-5 8/8/2019 72 1.1 10J 8.6 <0.41 <0.36 <0.28 <0.49 <0.58 <0.73 2.8 <0.32 51 0.94 <0.60 2.6 6.1J <0.48 9.4J <0.84 <0.39 1.7 <0.34 <0.53 7.4 <0.39 4.2 1.2 3.2J 2.6 1.4 3.4 1.5 SS-6 8/8/2019 56 0.87 6.9J 20 <0.41 <0.36 <0.28 <0.49 <0.58 <0.73 2.7 <0.32 51 0.64J <0.60 <0.48 <1.2 <0.48 6.7J <0.84 <0.39 1.7 <0.34 <0.53 8.4 <0.39 3.4 6.1 2.7J <0.63 <0.62 2.1 0.82J SS-7 <860 18J <150 <120 <25 92 <24 <25 <33 <20 <23 <20 2,600 22J 32J <27 <96 <35 <340 <120 <32 44J <87 <18 540 <110 23J 43,000 <64 120 49J 77J 43J SS-DUP/SS-7 <860 <14 <150 <120 <25 82 32J <25 <33 <20 <23 <20 600J <14 <23 <27 <96 <35 <340 <120 <32 <44 <87 <18 540 <110 <16 43,000 <64 31J <19 27J <17 SS-8 8/11/2020 600 1.8 22J <1.6 <0.33 29 0.45J 2.5 0.53J 1.1J 2.8 <0.27 1,000 34 82 1.2 <1.3 6.5 28 1.7J 3.4J 4.7J 2.6J 0.44J 170 <1.5 4.0 5,000 6.0 190 40 180 110 SS-9 8/11/2020 140J 0.27J 8.7J 34 <0.33 <0.24 <0.32 2.5 <0.44 0.36J <0.31 <0.27 52 1.6 51 1.3 <1.3 <0.46 7.6J <1.6 0.79J 3.9 <1.2 0.39J 1.4 <1.5 5.0 <0.40 1.5J 130 88 8.5 7.4 SS-10 8/11/2020 <860 <14 <150 <120 <25 150 33J <25 <33 <20 <23 <20 1,300 <14 32J <27 <96 <35 <340 <120 <32 <44 <87 <18 560 <110 <16 26,000 <64 66J 27J 42J 25J SS-11 8/11/2020 170 1.3 44 8.3 <0.33 <0.24 <0.32 1.5 <0.44 <0.27 2.9 <0.27 150 0.97 <0.30 2.2 2.9J 11 38 <1.6 30 1.5J 6.8J 1.3 8.5 <1.5 4.4 <0.40 2.1J 1.1 0.31J 230 0.76J SS-12 8/11/2020 59 0.58J 16J 4.9J <0.33 <0.24 <0.32 6.7 <0.44 <0.27 3.0 <0.27 150 0.28J 0.31J <0.35 <1.3 3.1 13J <1.6 <0.43 0.88J <1.2 0.31J 27 7.1 1.1 1.2 2.7J 0.47J <0.26 1.1J 0.43J SS-13 8/11/2020 38 <0.19 3.6J <1.6 0.45J 0.57J <0.32 2.1 <0.44 <0.27 2.9 1.7 300 0.23J 0.31J <0.35 <1.3 <0.46 12J <1.6 0.67J 0.84J 1.5J 0.77J 4.1 <1.5 0.83 3.1 1.8J 0.37J <0.26 0.8J 0.33J 220,000 120 35,000 4,900 160 41 630 42,000 1,400 85 700 NS NS 370 NS 2,800 4,900 210 1,400 4,200 21,000 21 21,000 7,000 280 14,000 35,000 14 NS 420 420 700 700 2,700,000 1,600 440,000 61,000 2,000 530 7,900 530,000 18,000 1,100 8,800 NS NS 4,900 NS 35,000 61,000 2,600 18,000 53,000 260,000 260 260,000 88,000 3,500 180,000 440,000 180 NS 5,300 5,300 8,800 8,800 Notes: 1) North Carolina Department of Environment Quality (DEQ) Division of Waste Management (DWM) Residential Sub-slab and Exterior Soil Gas Screening Levels (SGSLs) (February 2018)2) North Carlolina DEQ DWM Non-Residential SGSLs (February 2018).Bold values exceeds the NCDEQ DWM Residential SGSL.Bold and Underlined value exceeds the NCDEQ DWM Residential and Non-Residential SGSL. Compound concentrations are reported to the laboratory detection limits. Compound concentrations are reported in micrograms per cubic meter (µg/m3).J = estimated concentration between the laboratory method detection limit and the laboratory reporting limit NS = Not Specified DWM Residential SGSL (1) DWM Non-Residential SGSL (2) 2315 N. Davidson Street TO-15 8/8/2019 421 E. 26th Street 2315 N. Davidson Street 8/11/2020 421 E. 26th Street S:\AAA‐Master Projects\PAMAKA ‐ PAM\PAM‐003 N. Davidson & E. 26th\VIMS\Combined Data Tables (9‐18‐20) RJC.xlsx 1/7/2021 Table A-2 Hart & Hickman, PC Table A-3 Summary of Indoor Air Analytical Data North Davidson II Brownfields Property 2315 N. Davidson Street and 421 E. 26th Street Charlotte, North Carolina H&H Job No. PAM-003 Sa m p l e I D Sa m p l e L o c a t i o n Sa m p l e D a t e An a l y t i c a l M e t h o d Ch l o r o f o r m Te t r a c h l o r o e t h y l e n e Tr i c h l o r o e t h y l e n e IAS-1 0.10 J <0.13 0.14 J IAS-1 Duplicate (DUP-1)0.20 0.34 <0.076 IAS-2 Southern Portion of 2315 N. Davidson Street Building 11/6/2019 0.086 J <0.13 <0.076 IAS-3 Northern Portion of 2315 N. Davidson Street Building 11/6/2019 0.13 J 0.16 J <0.076 IAS-4 Eastern Portion of 2315 N. Davidson Street Building 11/6/2019 0.12 J <0.23 <0.13 BKG-1 Upwind, West of 2315 N. Davidson Street Building 11/6/2019 <0.11 <0.23 <0.13 0.12 8.3 0.42 0.53 35 1.8 Notes: 1) North Carolina Department of Environment Quality (DEQ) Division of Waste Management (DWM) Residential and Non-Residential Indoor Air Screening Levels (IASLs) dated July 2020. Based on a Total Cumulative Risk of 1x10- and a Target Hazard Quotient of 0.2. Compound concentrations are reported in micrograms per cubic meter (µg/m ). Compound concentrations are reported to the laboratory detection limits. J = Compound was detected above the laboratory method detection limit, but below the laboratory reporting limit resulting in a laboratory estimated concentration. IAS = indoor air sample; BKG = background DWM Non-Residential IASL (1) TO-15 DWM Residential IASL (1) Western Portion of 2315 N. Davidson Street Building 11/6/2019 S:\AAA‐Master Projects\PAMAKA ‐ PAM\PAM‐003 N. Davidson & E. 26th\EMP\Data Tables\Indoor Air Data Table (11‐29‐19) 10/12/2020 Table A-3 Hart & Hickman, PC Table 1 Summary of Semi-Annual Analytical Sampling Data North Davidson II Brownfields Site 421 East 26th StreetBrownfields Project No. 24003-20-060Charlotte, North Carolina H&H Job No. PAM-003 Evaluation Area Screening Criteria Screening Criteria Sample ID IAS-2 IAS-3 BKG-051723 MP-3 MP-9 Sample Date 5/17/2023 5/17/2023 5/17/2023 5/19/2023 5/19/2023 Sample Type Background Units VOCs (TO-15) Acetone 14.4 14.9 17.9 16.7 20.1 NE 8.30 9.99 NE Benzene 0.383 J 0.370 J 0.408 J 0.389 J 0.421 J 1.6 0.472 J 0.396 J 160 Carbon Disulfide 1.31 JB <0.060 <0.60 <0.060 <0.060 610 0.491 J 1.08 J 61,000 Chloroform 3.17 2.62 7.56 1.34 J <0.086 0.53 5.22 0.527 J 53 Chloromethane 0.753 J 0.768 J 0.755 J 0.689 J 0.747 J 79 0.685 J <0.067 7,900 Dichlorodifluoromethane 2.53 2.49 2.35 J 2.31 J 2.37 J 88 2.27 J 2.42 J 8,800 Ethyl Acetate 2.37 2.32 2.57 0.724 J <0.136 61 <0.136 <0.136 6,100 Ethylbenzene <0.106 <0.106 <0.106 <0.106 <0.106 4.9 0.586 J 0.542 J 490 4-Ethyltoluene <0.128 <0.128 <0.128 0.408 J <0.128 NE 0.673 J 19.9 NE Heptane 0.631 J 0.688 J 0.639 J 0.418 J 0.549 J 350 0.315 J <0.143 35,000 n-Hexane 0.641 J 0.613 J 0.613 J 0.563 J 0.807 J 610 0.613 J 0.401 J 61,000 Isopropyl Alcohol 1.60 J 1.37 J 0.978 J 0.235 J <0.139 180 2.49 J 0.228 J 18,000 Methyl Ethyl Ketone (MEK)1.80 1.86 2.06 1.42 J 1.05 J 4,400 1.11 J 1.35 J 440,000 4-Methyl-2-Pentanone (MIBK)<0.121 <0.121 <0.121 <0.121 <0.121 2,600 <0.121 2.01 J 260,000 Methylene Chloride <0.488 <0.488 <0.488 <0.488 <0.488 530 2.10 2.66 53,000 Naphthalene <0.183 <0.183 <0.183 <0.183 3.89 0.36 <0.183 0.477 J 36 Styrene 2.39 2.34 1.35 J 1.38 J <0.124 880 5.18 0.613 J 88,000 Tetrachloroethene <0.181 0.678 J <0.181 <0.181 <0.181 35 <0.181 11.7 3,500 Tetrahydrofuran 0.386 J 0.468 J 0.353 J <0.107 <0.107 1,800 1.86 1.57 180,000 Toluene 1.39 J 1.33 J 2.40 1.23 J 1.67 J 4,400 2.13 1.42 J 440,000 1,1,1-Trichloroethane <0.144 <0.144 <0.144 <0.144 <0.144 4,400 <0.144 1.34 J 440,000 Trichloroethene <0.199 <0.199 <0.199 <0.199 <0.199 1.8 0.548 J 131 180 Trichlorofluoromethane 1.70 J 1.78 J 1.46 J 1.39 J 1.53 J NE 1.42 J 1.78 J NE 1,2,4-Trimethylbenzene 1.94 J 1.92 J 0.560 J 2.35 J <0.209 53 13.3 168 5,300 1,3,5-Trimethylbenzene 0.722 J 0.653 J <0.236 0.806 J <0.236 53 4.51 88.1 5,300 Vinyl Acetate <0.224 <0.224 <0.224 <0.224 <0.224 180 0.792 J <0.224 18,000 o-Xylene <0.157 <0.157 <0.157 <0.157 <0.157 88 0.907 J 2.87 8,800 m,p-Xylene <0.217 <0.217 <0.217 <0.217 <0.217 88 <0.217 0.460 J 8,800 Xylene (Total)<0.157 <0.157 <0.157 <0.157 <0.157 88 0.907J 3.33 J 8,800 DEQ Cumulative Risk Calculator (3)Acceptable Risk Levels Acceptable Risk Levels LICR 1.4 x 10-5 2.8 x 10-6 --<1.0 x 10-4 1.0 x 10-7 4.7 x 10-7 <1.0 x 10-4 Non-Carcinogenic HI 0.041 0.029 -- <1.0 0.0016 0.16 <1.0 DEQ Cumulative Risk Calculator (3)Acceptable Risk Levels Acceptable Risk Levels LICR --<1.0 x 10-4 <1.0 x 10-4 Non-Carcinogenic HI -- <1.0 <1.0 Notes: 1) North Carolina Department of Environmental Quality (DEQ) Division of Waste Management (DWM) Vapor Intrusion Indoor Air Screening Levels (IASLs) dated January 2023. 2) North Carolina Department of Environmental Quality (DEQ) Division of Waste Management (DWM) Sub-Slab and Exterior Soil Gas Screening Levels (SGSLs) dated January 2023. 3) NC DEQ DWM Cumulative Risk Calculator dated January 2023 and is based up on a TCR = 1 x 10-6 and THQ = 0.2. Concentrations are reported in micrograms per cubic meter (µg/m3). Compound concentrations are reported to the laboratory method detection limits. Laboratory analytical method is shown in parentheses. Only compounds detected in at least one sample are shown in the above table. Bold values indicate an exceedance of DWM Non-Residential IASL or SGSL. TCR = Target Cancer Risk; THQ = Non-Carcinogenic Target Hazard Quotient; LICR = Lifetime Incremental Cancer Risk; HI = Hazard Index 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 concentration. B = Compound was detected in the laboratory method blank. Non-Residential Worst-Case Non-Residential W-C 1.4 x 10-5 0.056 5.6 x 10-7 0.16 Non-Residential SGSLs (2)5/17/2023 Indoor Air Sub-Slab Vapor µg/m3 µg/m3 6.2 x 10-6 0.043 Seoul Food Company - 421 E 26th St Seoul Food Company IAS-1 / IAS-DUP Non-Residential IASLs (1) Non-Residential Non-Residential https://harthick.sharepoint.com/sites/MasterFiles‐1/Shared Documents/AAA‐Master Projects/PAMAKA ‐ PAM/PAM‐003 N. Davidson & E. 26th/VIMS/421 E 26 St/Post‐Occupancy/2023‐06 IAS/Sampling Results_2022‐2023 8/8/2023 Table 1 (Page 1 of 1) Hart & Hickman, PC Appendix B VIMS As-Built Drawings – 421 E. 26th Street (Seoul Food Company) POSP F-2 F-3 F-4 F-1 F-6 VIMS PLAN VIEW LAYOUT (421 E. 26TH STREET) 1" = 10' 1 VM-4 F-5 F-7 H&H NO. PAM-003 VAPOR INTRUSION MITIGATION SYSTEM (421 E. 26TH ST) PLAN VIEW LAYOUT VM-4 NO R T H D A V I D S O N I I B R O W N F I E L D S P R O P E R T Y (B R O W N F I E L D S N O . 2 4 0 0 3 - 0 2 - 0 6 0 ) SE O U L F O O D C O M P A N Y 42 1 E A S T 2 6 T H S T R E E T CH A R L O T T E , N O R T H C A R O L I N A PROFESSIONAL APPROVAL / SEAL APRIL 4, 2022 TITLE: SHEET: VAPOR INTRUSION 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 Geology 04/04/22 LEGEND EXISTING EXTERIOR WALL AND EXTENTS OF EXISTING CONCRETE SLAB 3" SCH 40 PVC SOLID PIPE SET WITHIN TRENCH WITH SOIL BACKFILL AREA OF NEW CONCRETE WITH MOISTURE BARRIER (STEGO-WRAP) 3" SCH 40 SLOTTED PIPE SET WITHIN GRAVEL BASE BELOW AREA OF NEW CONCRETE 3" SCH 40 PVC RISER WITH CONNECTED TO TRENCH INDIVIDUAL SUCTION POINT WITH 3" SCH 40 PVC RISER INDIVIDUAL SUCTION POINT WITH 3" SCH 40 PVC RISER CONNECTED TO VIMS TRENCH VACUUM MONITORING POINT(1" SCH 40 PVC SLOTTED PIPE SET WITHIN GRAVEL WITH CLEAN-OUT FLOOR COVER) SUCTION TRENCH CLEAN-OUT VIMS ELECTRIC FAN DISCHARGE ON ROOF OFF-SET FROM RISER HORIZONTAL 3" SCH 40 PVC PIPING BELOW CEILING FOR FAN OFF-SET FROM RISER OUTDOOR (OPEN AIR) PATIO & BAR APPROXIMATE LOCATION OF SUB-SLAB VOID (FILLED WITH GRAVEL) INDOOR AIR SAMPLE LOCATION NOTES: 1. REFER TO SHEET VM-5 FOR SECTION DETAILS AND SHEET VM-6 FOR SPECIFICATIONS. 2. EACH RISER FAN CONTAINS A WIND DRIVEN TURBINE VENTILATOR. 3. VIMS = VAPOR INTRUSION MITIGATION SYSTEM; SCH = SCHEDULE; TYP = TYPICAL4. SELECT AREAS FOR UTILITY TRENCHES (NOT DEPICTED) NOTRELATED TO THE VIMS INSTALLATION ALSO RECEIVED STEGO-WRAPVAPOR BARRIER BELOW NEW CONCRETE. 1VM-5 2VM-5 2VM-5 1VM-5 5 / 9 VM-5 3 / 9VM-5 3 / 9VM-5 5 / 9VM-5 4 / 9VM-5 8VM-5 10VM-5 3A/9VM-5 GENERAL AREA TO RECEIVE NEWCONCRETE AND 15-MIL VAPORBARRIER AREA TO RECEIVE NEW CONCRETEAND 15-MIL VAPOR BARRIER VIMS TRENCH APPROXIMATE EXTENTS OF SUB-SLAB VOID (FILLED WITH 57 STONE/GRAVEL) OUTDOOR / OPEN AIR PATIOSPACE 6 / 7VM-5 6 / 7VM-5 6 / 7VM-5 6 / 7VM-5 OFF-SET DISCHARGE POINT TO BE MIN 10 FT FROM AIR INTAKES 6 / 7VM-5 COORDINATE POSITION OF RISER F-3 WITH PLUMBING FLOOR SINK TO KEEP LOCATION ABOVE PREVIOUS SUB-SLAB VOID 6 / 7VM-5 AS-BUILT DRAWING MP-2 MP-1 MP-3 MP-4 MP-6 MP-5 MP-1 MP-7 MP-9 MP-8 IAS-1 IAS-2 IAS-3 BAS-1 BKG S:\ A A A - M a s t e r P r o j e c t s \ P A M A K A - P A M \ P A M - 0 0 3 N . D a v i d s o n & E . 2 6 t h \ V I M S \ 4 2 1 E 2 6 S t \ I n s t a l l a t i o n R e p o r t \ 4 2 1 E . 2 6 t h S t r e e t _ A S - B U I L T _ 0 3 1 7 2 0 2 2 _ R E V . d w g , 4 / 4 / 2 0 2 2 1 1 : 1 6 : 1 2 A M , D W G T o P D F . p c 3 BASE COURSE BELOW NEW CONCRETE1 NTSVM-5 VENTED COLLECTION PIPING BELOW NEW CONCRETE2 NTSVM-5 BASE COURSE - CLEAN 57 STONE(WASHED WITH NO FINES), MIN 4"THICK BENEATH NEW CONCRETE 3" SCH 40 PVC VENT PIPE SET WITHIN MIN 4" BASECOURSE. VENT PIPE SHALL BE 0.020" SLOTTEDPIPE OR 5/8" PERFORATED WITH 5-HOLE SPACED60 DEGREES APART AND 6" OFF CENTER SOIL SUB-BASE SOIL SUB-BASE MIN 4" NEW CONCRETE SLAB WITH REBARAND WIRE MESH IN ACCORDANCE WITHSTRUCTURAL DRAWINGS. MIN 6" NEW CONCRETE SLAB WITHREBAR AND WIRE MESH IN ACCORDANCEWITH STRUCTURAL DRAWINGS. MIN 15-MIL VAPOR BARRIER MIN 15-MIL VAPOR BARRIERBELOW NEW CONCRETE VIMS SUCTION POINT NTS 3 VM-5 SOLID 3" SCH 40 PVC.LENGTH VARIES, REFER TOSHEET VM-1 3" SCH 40 PVC RISER DUCT PIPE TO ROOFTOP(SEE DETAIL 11) PROPOSED WALL 3" SCH 40 PVC TEE 0.75 TO 1 CU FT CAVITY FILLEDWITH CLEAN 57 STONE OR PEAGRAVEL (MIN 18" DEEP AND 10" DIA) 3" VENT CAP PLACED MIN 6"ABOVE BOTTOM OF CAVITYEXISTING SOILS SEAL PENETRATION WITH URETHANESEALANT, OR SIMILAR EXISTING CONCRETE VIMS TRENCH DETAIL WITH SUCTION POINT NTS 4 VM-5 SOLID 3" SCH 40 PVC.LENGTH VARIES, REFER TOSHEET VM-1 3" SCH 40 PVC RISERDUCT PIPE TO ROOFTOP (SEE DETAIL 11) PROPOSED STUDWALL 3" SCH 40 PVC TEE MIN 1% SLOPE TOWARDEXTRACTION POINT CLEAN 57 STONE AROUNDSOLID SECTION OF PIPE 0.75 TO 1 CU FT CAVITY FILLEDWITH CLEAN 57 STONE OR PEAGRAVEL (MIN 18" DEEP AND 10" DIA) 3" VENT CAP PLACED MIN 6"ABOVE BOTTOM OF CAVITY EXISTING SOILS SEAL PENETRATION WITH URETHANESEALANT, OR SIMILAR MIN 4" NEW CONCRETE SLAB WITHREBAR AND WIRE MESH INACCORDANCE WITH STRUCTURALDRAWINGS. MIN 10-MIL MOISTURE BARRIERPLACED AT INTERFACE OF 57STONE AND NEW CONCRETE VIMS PIPING AND RISER IN AREA WITH NEW CONCRETE NTS 5 VM-5 3" SCH 40 PVC RISERDUCT PIPE INSIDEFURR OUT SOLID TO PERFORATED/SLOTTED 3" SCH 40PVC PIPE TRANSITION CLEAN 57 STONE, OR SIMILAR, PLACEDIN AREA OF NEW SLAB EXISTING SOILS NEW CONCRETE SLAB ACCORDANCEWITH STRUCTURAL DRAWINGS SEAL PENETRATION WITH URETHANESEALANT, OR SIMILAR 15-MIL VAPOR BARRIER PLACEDUNDER AREAS WITH NEW SLAB SEAL COLD JOINT BETWEEN EXISTINGCONCRETE AND NEW CONCRETE WITHURETHANE SEALANT, OR SIMILAR EXTERIOR WALL EXISTING CONCRETE 6 NTS VACUUM MONITORING POINT VM-5 EXISTING CONCRETE SLAB FLOOR CLEAN-OUT SET FLUSHWITH FINISHED FLOOR(SEE DETAIL 9) 1" SCH 40 0.020" SLOTTED PVCPIPE WITH OPEN END ON BOTTOM#2 WELLPACK FILTRATIONSAND (OR SIMILAR COARSESAND) EXISTING SUB-SLAB SOIL SEAL JOINT WITH URETHANESEALANT, OR SIMILAR (SEE SPEC #) 1" EXPANDABLE WELLPLUG POLY-URETHANESEALANT VAPOR BARRIER SEE DETAIL 7 / VM-5 VACUUM MONITORING POINT FINISHING DETAIL NTSVM-5 7 FLOOR CLEANOUT, ADJUSTABLE, 4" DIAZURN INDUSTRIES MODEL #CO2450-PV4FLUSH WITH FINISHED FLOOR 1" EXPANDABLE WELLPLUG #2 WELLPACK FILTRATION SAND(OR SIMILAR COARSE SAND) SEAL JOINT WITH URETHANESEALANT POLY-URETHANESEALANT VAPOR BARRIER ELECTRIC EXHAUST FAN AND RISER ON ROOFTOP NTS 9 VM-5 EMPIRE MODEL TV04SS (STAINLESSSTEEL) WIND TURBINE VENTILATOR DISCHARGE A MINIMUM OF 10 FT FROMAIR INTAKES OR OPERABLE BUILDINGOPENINGS AND MINIMUM 2-FT ABOVE ROOFLINE OR PARAPETS LABEL FAN WITH IDENTIFICATION NUMBERAND "VAPOR MITIGATION SYSTEM -CONTACT MAINTENANCE IF NOTOPERATING", OR SIMILAR WEATHERPROOF 120VAC OUTLET FORFUTURE HOOK-UP OF ELECTRIC FAN, IFWARRANTED 3" X 4" FLEXIBLE REDUCER /COUPLING 3" SCH 40 PVC RISERSECURE TO ROOF TRUSSES,COLUMNS, OR STUD WALLSDROP CEILING OR EXISTINGCEILING TRUSSES WATERTIGHT ROOF FLASHING LABELED RISER PIPE EVERY 10-FT WITH"VAPOR MITIGATION SYSTEM - CONTACTMAINTENANCE" ROOFTOP REFER TO ROOF/CEILING PLAN ON SHEETVM-4 FOR LOCATION OF HORIZONTAL PIPERUNS WHERE FAN EXHAUST IS OFF-SETFROM RISER UTILITY PENETRATION AT EXTERIOR WALL NTS 11 VM-5 EXTERIOR GRADE VARIES.REFER TO CIVIL AND ARCHITECTURAL PLANS AIR TIGHT SEAL AROUND UTILITY THROUGHEXTERIOR WALL OR FOOTER, AND / OR BACKFILLMINIMUM 3' LENGTH OF TRENCH OF COMPACTEDSOILS COMPACTED SOILS AROUNDUTILITY AT EXTERIORPENTRATION EXISTING EXTERIOR WALLAND FOOTER CRUSHED STONE BACKFILLWITHIN UTILITY TRENCH EXISTING SOILS INTERIOR SPACEEXTERIOR SPACE(OPEN AIR) UTILITIES INSTALLEDBY OTHERS VIMS EXTRACTION TRENCH CLEAN-OUT NTS 8 VM-5 FLOOR CLEANOUT, ADJUSTABLE, 4" DIAZURN INDUSTRIES MODEL #CO2450-PV4FLUSH WITH FINISHED FLOOR 2" EXPANDABLE WELL CAP 3" SCH 40 PVC ALL-HUB2-WAY CLEANOUT 3" SCH 40 PVC SOLID PIPE 2" SCH 40 PVC PIPE WITH 4" X 2"PVC FLUSH REDUCER BUSHING CLEAN 57 STONE OR COMPACTEDSOIL. REFER TO SHEET VM-1. MIN 10-MIL MOISTURE BARRIERPLACED AT INTERFACE OF 57 STONEAND NEW CONCRETE(IF PRESENT) 3" X 2" PVC REDUCER MIN 4" NEW CONCRETE SLAB WITHREBAR AND WIRE MESH IN ACCORDANCEWITH STRUCTURAL DRAWINGS VIMS HORIZONTAL PIPING FOR EXHAUST FAN OFF-SET FROM RISER NTS 10 VM-5 SEE DETAIL 9(WIND DRIVEN TURBINE FAN) SEE DETAILS 3 TO 6(VIMS RISER) MIN 1% SLOPE TOWARDEXTRACTION POINT EXISTING CEILLINGSTEEL TRUSSES ROOFTOP PIPE SUPPORTS PER NCBUILDING CODE SOLID 3" SCH 40 PVC.LENGTH VARIES, REFER TOSHEETS VM-1 & VM-1A 3" SCH 40 PVC90-DEGREE ELBOW 3" SCH 40 PVC90-DEGREE ELBOW VIMS SUCTION POINT AT FORMER SUB-SLAB VOID LOCATION (FAN F-3 LOCATION) NTS 3A VM-5 3" SCH 40 PVC RISERDUCT PIPE TO ROOFTOP(SEE DETAIL 11) PROPOSED STUDWALL 3" VENT CAP FORMER SUB-SLABVOID FILLED 57 STONE SEAL PENETRATION WITH URETHANESEALANT, OR SIMILAR EXISTING CONCRETE H&H NO. PAM-003 VAPOR INTRUSION MITIGATION SYSTEM (421 E. 26TH ST.) SECTION DETAILS VM-5 TITLE: SHEET: VAPOR INTRUSION 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 Geology NOTES: 1. NTS = NOT TO SCALE;2. SCH = SCHEDULE; 3. VIMS = VAPOR INTRUSION MITIGATION SYSTEM 4. MIN = MINIMUM NO R T H D A V I D S O N I I B R O W N F I E L D S P R O P E R T Y (B R O W N F I E L D S N O . 2 4 0 0 3 - 0 2 - 0 6 0 ) SE O U L F O O D C O M P A N Y 42 1 E A S T 2 6 T H S T R E E T CH A R L O T T E , N O R T H C A R O L I N A PROFESSIONAL APPROVAL / SEAL APRIL 4, 2022 04/04/22 AS-BUILT DRAWING S:\ A A A - M a s t e r P r o j e c t s \ P A M A K A - P A M \ P A M - 0 0 3 N . D a v i d s o n & E . 2 6 t h \ V I M S \ 4 2 1 E 2 6 S t \ I n s t a l l a t i o n R e p o r t \ 4 2 1 E . 2 6 t h S t r e e t _ A S - B U I L T _ 0 3 1 7 2 0 2 2 _ R E V . d w g , 4 / 4 / 2 0 2 2 1 1 : 1 6 : 3 0 A M , D W G T o P D F . p c 3 Appendix C Field Forms &Žƌŵ^sͲϭ Sub-Slab / Soil Gas Vapor Installation Field Form Project No.:_________________ Sampler:_____________________Weather:____________________________________________________________ Surface Material Slab Thickness (if appl.) Material Below Slab (if appl.) Depth of Screen (if appl.) Type Date & Time Ambient Temp.Purge Method Volume Purged Shroud Helium Conc. Purge Helium Conc. Leak Test Pass? (see note) SS, SG Perm., Temp.Concrete, soil, gravel, asphalt Inches Gravel, sand, clay, etc.ft bgs Full sample train or point-only mm/dd/yy 24-hr oF Syringe, pump Liters (see notes for calc.)%% or ppm(indicate units below) Yes / No ^͗ ͗ Z͗ ^͗ ͗ Z͗ ^͗ ͗ Z͗ ^͗ ͗ Z͗ ^͗ ͗ Z͗ ^͗ ͗ Z͗ S = sample ID; C = canister ID; R = regulator ID; SS = sub-slab; SG = soil gas; Perm = permanent; Temp = temporary; Volume Purged = x3 purge volumes = 3*L*a Last updated: 4/21/2022 " Hg = inches of mercury; ppm = parts per million Notes:___________________________________________________ ___________________________________________________ ___________________________________________________ ___________________________________________________ Sample ID Type Vapor Monitoring Point Construction Helium Leak Test EŽƚĞ͗>ĞĂŬdĞƐƚZĞƋƵŝƌĞŵĞŶƚƐ WĞƌEYtDsĂƉŽƌ/ŶƚƌƵƐŝŽŶ'ƵŝĚĂŶĐĞ͕ůĞĂŬƚĞƐƚƉĂƐƐĞƐŝĨŚĞůŝƵŵ ĐŽŶĐĞŶƚƌĂƚŝŽŶŝŶƉƵƌŐĞĂŝƌŝƐůĞƐƐƚŚĂŶϭϬйŽĨŚĞůŝƵŵĐŽŶĐĞŶƚƌĂƚŝŽŶŝŶ ƐŚƌŽƵĚ͘ L = length of tubing/pipe (ft)a = 0.163 for 2" diameter (L/ft)a = 0.010 for 0.25" diameter (L/ft) ͗ͰhƐĞƌƐͰŵǀĂǁƚĞƌͰƌŽƉďŽǆͰǇKƚŚĞƌͰ&ŽƌŵĚŝƚƐͰ/YͲ^^sͰsĂƉŽƌ^ĂŵƉůŝŶŐ&ŽƌŵƐͺsϲ͘Ϭ ^ƵďͲ^ůĂďͬ^Žŝů'ĂƐ^ĂŵƉůŝŶŐsĂƉŽƌ/ŶƐƚĂůůĂƚŝŽŶ&ŝĞůĚ&Žƌŵ ,ĂƌƚΘ,ŝĐŬŵĂŶ͕W PAM-003 AML 70s, partly cloudy P-1 11377 SS Temp Concrete 6 Gravel --Full 5/18/23 1240 71 Pump 1 L 10.6 0 ppm Yes 16213 MP-9 11374 SS Perm Concrete 6 Gravel --Full 5/19/23 1115 62 Pump 1 L 10.6 1025 ppm Yes13142 MP-3 11356 SS Perm Concrete 6 Gravel --Full 5/19/23 1225 64 Pump 1 L 10.6 2075 ppm Yes 16204 &Žƌŵ^sͲϮ Sub-Slab / Soil Gas Vapor Sampling Field Form Project No.:___________________ Sampler:______________________ Weather:____________________________________________________________ Date Proposed Sampling Duration Time Canister Pressure Outdoor Temperature Outdoor Humidity Indoor Temperature Indoor Humidity mm/dd/yy Minutes 24-hr " Hg oF %oF % ^͗Beginning ͗Middle Z͗End ^͗Beginning ͗Middle Z͗End ^͗Beginning ͗Middle Z͗End ^͗Beginning ͗Middle Z͗End ^͗Beginning ͗Middle Z͗End ^͗Beginning ͗Middle Z͗End S = sample ID; C = canister ID; R = regulator ID; SS = sub-slab; SG = soil gas; Perm = permanent; Temp = temporary Last updated: 6/18/2020 " Hg = inches of mercury Notes:________________________________________________ _______________________________________________ _______________________________________________ _______________________________________________ _______________________________________________ ^ŝǌĞ͗ &ůŽǁZĂƚĞ͗ ^ŝǌĞ͗ &ůŽǁZĂƚĞ͗ Sample ID ^ŝǌĞ͗ &ůŽǁZĂƚĞ͗ ^ŝǌĞ͗ &ůŽǁZĂƚĞ͗ ^ŝǌĞ͗ &ůŽǁZĂƚĞ͗ ^ŝǌĞ͗ &ůŽǁZĂƚĞ͗ Sampling Information Indoor ParametersOutdoor Parameters Sampling Period EŽƚĞ͗ WĞƌEYtDsĂƉŽƌ/ŶƚƌƵƐŝŽŶ'ƵŝĚĂŶĐĞ͕ ƐŚƵƚͲŝŶƚĞƐƚĂŶĚŚĞůŝƵŵůĞĂŬĐŚĞĐŬŵƵƐƚďĞ ƉĂƐƐĞĚďĞĨŽƌĞƐĂŵƉůŝŶŐ͘ ͗ͰhƐĞƌƐͰŵǀĂǁƚĞƌͰƌŽƉďŽǆͰǇKƚŚĞƌͰ&ŽƌŵĚŝƚƐͰ/YͲ^^sͰsĂƉŽƌ^ĂŵƉůŝŶŐ&ŽƌŵƐͺsϲ͘Ϭ ^ƵďͲ^ůĂďͬ^Žŝů'ĂƐ^ĂŵƉůŝŶŐsĂƉŽƌ^ĂŵƉůŝŶŐ&ŝĞůĚ&Žƌŵ ,ĂƌƚΘ,ŝĐŬŵĂŶ͕W PAM-003 AML 70s, partly cloudy P-1 1 L11377 5/18/23 10 100 mL/min 1254 -17 71 45 45 16213 1301 -5 1249 -27 71 MP-9 1 L 1115 -28.5 11374 5/19/23 10 1120 -19 62 65 71 41 100 mL/min13142 1128 -5 MP-3 1230 -28.51 L11356 5/19/23 10 64 64 71 46 16204 100 mL/min 1235 -18.5 1243 -4 &Žƌŵ/^Ͳϭ Indoor Air Sampling Field Form Project No.:___________________ Sampler:______________________ Weather:____________________________________________________________ Date Proposed Sampling Duration Time Canister Pressure Differential Pressure Outdoor Temperature Outdoor Humidity Indoor Temperature Indoor Humidity mm/dd/yy Hours 24-hr " Hg " H2O oF %oF % ^͗Beginning ͗Middle Z͗End ^͗Beginning ͗Middle Z͗End ^͗Beginning ͗Middle Z͗End ^͗Beginning ͗Middle Z͗End ^͗Beginning ͗Middle Z͗End ^͗Beginning ͗Middle Z͗End S = sample ID; C = canister ID; R = regulator ID Note: negative differential pressure indicates that indoor pressure was lower than pressure outdoors.Last updated: 6/18/2020" Hg = inches of mercury; " H2O = inches of water column Time (EST)Notes:____________________________________________ Precipitation (inches) ____________________________________________ Barometric Pressure (" Hg) ____________________________________________ Wind Direction ____________________________________________ Wind Speed (mph) ____________________________________________ ^ŝǌĞ͗ &ůŽǁZĂƚĞ͗ ^ŝǌĞ͗ &ůŽǁZĂƚĞ͗ ^ŝǌĞ͗ &ůŽǁZĂƚĞ͗ ^ŝǌĞ͗ &ůŽǁZĂƚĞ͗ Indoor Parameters Sampling Period Sampling Information Outdoor Parameters Sample ID ^ŝǌĞ͗ &ůŽǁZĂƚĞ͗ ^ŝǌĞ͗ &ůŽǁZĂƚĞ͗ ͗ͰhƐĞƌƐͰŵǀĂǁƚĞƌͰƌŽƉďŽǆͰǇKƚŚĞƌͰ&ŽƌŵĚŝƚƐͰ/YͲ^^sͰsĂƉŽƌ^ĂŵƉůŝŶŐ&ŽƌŵƐͺsϲ͘Ϭ /ŶĚŽŽƌŝƌ^ĂŵƉůŝŶŐ&ŝĞůĚ&Žƌŵ ,ĂƌƚΘ,ŝĐŬŵĂŶ͕W PAM-003 AML 70s, partly cloudy IAS-1 0924 -28 0.000 72 31 73 676 L28744 5/17/23 8 1350 -16.5 0.000 79 40 70 63 14326 12.5 1724 -7 0.000 82 53 73 47 IAS-DUP 0924 -28 0.000 72 31 73 676 L42652 5/17/23 8 1350 -16.5 0.000 79 40 70 63 14326 12.5 1724 -7 0.000 82 53 73 47 IAS-2 0923 -30 0.000 72 31 73 676 L36110 5/17/23 8 1350 -17.5 0.000 79 40 70 63 14307 12.5 1724 -6 0.000 82 53 73 47 IAS-3 0922 -29 0.000 72 31 73 676 L37255 5/17/23 8 1351 -16.5 0.000 79 40 70 63 14298 12.5 1726 -6 0.000 82 53 73 47 P-1 0925 -30 0.000 72 31 72 726 L42644 5/17/23 8 1353 -17 0.000 79 40 70 6312.514296 1730 -8 0.000 82 53 79 64 BKG-051723 0921 -29 0.000 72 31 -- --6 L46853 5/17/23 8 1354 -18 0.000 79 40 -- -- 17726 12.5 1726 -7.5 0.000 82 53 -- -- 0930 1400 1730 0 0 0 29.76 29.84 29.80 NNE NNE NNE 6 8 11 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: Describe building: ________________________________________ Year constructed: _________ Sensitive population:2WKHU(specify): _______________ Number of floors below grade: ______ Number of floors at or above grade: ______ Depth of basement below grade surface: ______ ft. Basement size: _______ ft2 Basement floor construction: Foundation walls: Basement sump present?<HV1RSumppump?<HV1R Rther (specify): ________________ other(specify)_______________B Water in sump?<HV1R Type of heating system (cKHFN 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 (cKHFN all that apply): bathroom ventilation fans outside air intake central air conditioning mechanical fans individual air conditioning units kitchen range hood fan other (specify): _________________ Type of fuel utilized (cKHFN 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? <HV1R # of occupants varies throughout day (restaurant) Pamaka (Seoul Food Company building)(BF)24003-20-060 Ann Marie Lindley 5/17/23 H&H (704) 586-0007 421 E 26th St. Charlotte, NC Paul Kardous Owner Restaurant 2022 0 1 Commercial one Concrete Cinder Blocks other (specify) _____________ Is there a whole house fan?<HV1R Septic system? <HV<HV%XWQRWXVHG1R Irrigation/private well? <HV<HV%XWQRWXVHG1R Type of ground cover outside of building:BBBBBBBBBBBBBBBBBBBBB Existing subsurface depressurization (radon) system in place?<HV1R 7\SHBBBBBBBBBBBB Sub-slab vapor/moisture barrier in place? <HV1R Type of barrier: ____________________________BBBBBBBBBBBBBBB 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) Wood stove or fireplace New furniture / upholstery New carpeting / flooring Hobbies - glues, paints, etc. As halt &rass NA N. Davidson St. and train tracks 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 N/A N/A N/A Concrete Enhanced assiv Ste o 15-mil Part V – Miscellaneous Items Do any occupants of the building smoke?<HV1RHow often? ______________ Last time someone smoked in the building? ____________ hours days ago Does the building have an attached garage directly connected to living space?<HV1R If so, is a car usually parked in the garage?<HV1R Are gas-powered equipment or cans of gasoline/fuels stored in the garage?<HV1R Do the occupants of the building have their clothes dry cleaned? <HV 1R If yes, how often?:HHNO\0RQWKO\7LPHVSHU\HDU Do any of the occupants use solvents in work?<HV1R If yes, what types of solvents are used? _______________________________________ If yes, are their clothes washed at work?<HV1R +DYHDQ\SHVWLFLGHVKHUELFLGHVEHHQDSSOLHGDURXQGWKHEXLOGLQJRULQWKH\DUG"<HV1R If so, when and which chemicals? _________________________________________________ Has there ever been a fire in the building?<HV1R 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 SourceFKHFNDOOWKDWDSSO\ ,QGRRU$LU&UDZOVSDFH$LU6XE6ODE1HDU6ODE6RLO*DV([WHULRU6RLO*DV Sampler TypeFKHFNDOOWKDWDSSO\ 7HGODU%DJ6RUEHQW6WDLQOHVV6WHHO&DQLVWHUOther (specify): _________________ Analytical Method:BBBBBBBBBBBBBBBBB2ther: _____________ Cert. Laboratory:BBBBBBBBBBBBB Sample locations (floor, room):BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB Field ID # _____ - ________________________Field ID # _____B-__________________________ Field ID #BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB)LHOG,'BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB Were “Instructions for Occupants” followed? ,IQRWGHVFULEHPRGLILFDWLRQVBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB unknown Ann Marie Lindley 6588606 Waypoint IAS 1, 2 BKG 1 restaurant, pavilion (P-1) and outside (BKG) 1, 2, 3, 4 MP P1 TO-15 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) 70s, partly cloudy, light wind Doors frequently opened for restaurant customers Appendix D Laboratory Analytical Report Table F-1Site-Specific Indoor Air Sampling VOC List North Davdison II 2315 N. Davidson Street and 421 E. 26th Street Charlotte, North Carolina H&H Job No. PAM.003 1 Acetone 2 Benzene 3 2-Butanone (MEK) 4 Carbon Disulfide 5 Carbon Tetrachloride 6 Chloroform 7 Chloromethane 8 Cyclohexane 9 1,2-Dichlorobenzene 10 1,4-Dichlorobenzene 11 Dichlorodifluoromethane (Freon 12) 12 cis-1,2-Dichloroethylene 13 Ethanol 14 Ethylbenzene 15 4-Ethyltoluene 16 Heptane 17 Hexane 18 2-Hexanone (MBK) 19 Isopropanol 20 Methylene Chloride 21 4-Methyl-2-pentanone (MIBK) 22 Naphthalene 23 Propene 24 Styrene 25 Tetrachloroethene 26 Tetrahydrofuran 27 Toluene 28 Trichloroethene 29 Trichlorofluoromethane (Freon 11) 30 1,2,4-Trimethylbenzene 31 1,3,5-Trimethylbenzene 32 m&p-Xylene 33 o-Xylene VOC = volatile organic compound Select VOCs by EPA Method TO-15 S:\AAA-Master Projects\PAMAKA - PAM\PAM-003 N. Davidson & E. 26th\VIMS\VIMP\Attachment G - Select VOC TO-15 List12/22/2020 Table F-1 (Page 1 of 1) Hart & Hickman, PC 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. 1/31/2024 Hart & Hickman (Charlotte) Matt Vawter 2923 South Tryon St. Ste 100 Charlotte, NC, 28203 Ref: Analytical Testing Lab Report Number: 24-019-0015 Client Project Description: PAM.003 Dear Matt Vawter: Waypoint Analytical, LLC (Charlotte) received sample(s) on 1/19/2024 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 66 Certification Summary Laboratory ID: WP CNC: Waypoint Analytical Carolina, Inc. (C), Charlotte, NC State Program Lab ID Expiration Date 07/31/202437735State ProgramNorth Carolina 12/31/2024402State ProgramNorth Carolina 07/31/202499012State ProgramSouth Carolina 12/31/202399012State ProgramSouth Carolina Page 1 of 1 00016/24-019-0015 Page 2 of 66 Report Number: Sample Summary Table Client Project Description: 24-019-0015 PAM.003 Lab No Client Sample ID Matrix Date Collected Date Received 01/18/2024 08:00Air 94745 IAS-P1 01/19/2024 13:01 01/18/2024Air 94746 IAS-DUP 01/19/2024 13:01 01/18/2024 10:15Air 94747 IAS-OFF-1 01/19/2024 13:01 01/18/2024 09:47Air 94748 IAS-1 (UDM)01/19/2024 13:01 01/18/2024 08:31Air 94749 IAS-3 01/19/2024 13:01 01/18/2024 08:39Air 94750 IAS-2 01/19/2024 13:01 01/18/2024 08:50Air 94751 IAS-OFF-2 01/19/2024 13:01 01/18/2024 08:24Air 94752 IAS-1 01/19/2024 13:01 01/18/2024 10:06Air 94753 IAS-3 (UDM)01/19/2024 13:01 01/18/2024 09:58Air 94754 IAS-2 (UDM)01/19/2024 13:01 01/18/2024 09:21Air 94755 IAS-BKG 01/19/2024 13:01 01/18/2024 10:02Air 94756 MP-P1 01/19/2024 13:01 Page 3 of 66 Summary of Detected Analytes QualifiersAnalyzedUnitsResult Report Number: Client Sample ID Method Parameters Lab Sample ID 24-019-0015 Report Limit Project:PAM.003 V 94745IAS-P1 14.7 01/24/2024 20:53TO-15 Acetone µg/m3 0.202 J1.01 01/24/2024 20:53TO-15 Benzene µg/m3 0.073 J1.29 01/24/2024 20:53TO-15 Carbon Disulfide µg/m3 0.060 J0.823 01/24/2024 20:53TO-15 Chloromethane µg/m3 0.067 2.79 01/24/2024 20:53TO-15 Dichlorodifluoromethane µg/m3 0.134 J0.486 01/24/2024 20:53TO-15 Ethylbenzene µg/m3 0.106 J0.574 01/24/2024 20:53TO-15 1,1,2-Trichloro-1,2,2-trifluoroethane µg/m3 0.561 J0.459 01/24/2024 20:53TO-15 Heptane µg/m3 0.143 J0.687 01/24/2024 20:53TO-15 n-Hexane µg/m3 0.047 JB3.97 01/24/2024 20:53TO-15 Isopropyl Alcohol µg/m3 0.139 J1.38 01/24/2024 20:53TO-15 Methyl Ethyl Ketone (MEK)µg/m3 0.224 J1.54 01/24/2024 20:53TO-15 Methylene Chloride µg/m3 0.488 J0.392 01/24/2024 20:53TO-15 Tetrahydrofuran µg/m3 0.107 2.00 01/24/2024 20:53TO-15 Toluene µg/m3 0.090 J1.63 01/24/2024 20:53TO-15 Trichlorofluoromethane µg/m3 0.130 J0.625 01/24/2024 20:53TO-15 o-Xylene µg/m3 0.157 J1.83 01/24/2024 20:53TO-15 m,p-Xylene µg/m3 0.217 J2.46 01/24/2024 20:53TO-15 Xylene (Total)µg/m3 0.157 V 94746IAS-DUP 14.3 01/24/2024 21:42TO-15 Acetone µg/m3 0.202 J1.02 01/24/2024 21:42TO-15 Benzene µg/m3 0.073 J0.750 01/24/2024 21:42TO-15 Carbon Disulfide µg/m3 0.060 J0.797 01/24/2024 21:42TO-15 Chloromethane µg/m3 0.067 2.78 01/24/2024 21:42TO-15 Dichlorodifluoromethane µg/m3 0.134 J0.590 01/24/2024 21:42TO-15 Ethylbenzene µg/m3 0.106 J0.581 01/24/2024 21:42TO-15 Heptane µg/m3 0.143 J0.662 01/24/2024 21:42TO-15 n-Hexane µg/m3 0.047 JB3.92 01/24/2024 21:42TO-15 Isopropyl Alcohol µg/m3 0.139 J1.38 01/24/2024 21:42TO-15 Methyl Ethyl Ketone (MEK)µg/m3 0.224 J1.32 01/24/2024 21:42TO-15 Methylene Chloride µg/m3 0.488 J0.406 01/24/2024 21:42TO-15 Tetrahydrofuran µg/m3 0.107 2.16 01/24/2024 21:42TO-15 Toluene µg/m3 0.090 J1.58 01/24/2024 21:42TO-15 Trichlorofluoromethane µg/m3 0.130 J0.772 01/24/2024 21:42TO-15 o-Xylene µg/m3 0.157 J2.21 01/24/2024 21:42TO-15 m,p-Xylene µg/m3 0.217 J2.98 01/24/2024 21:42TO-15 Xylene (Total)µg/m3 0.157 Page 4 of 66 Summary of Detected Analytes QualifiersAnalyzedUnitsResult Report Number: Client Sample ID Method Parameters Lab Sample ID 24-019-0015 Report Limit Project:PAM.003 V 94747IAS-OFF-1 34.8 01/24/2024 22:34TO-15 Acetone µg/m3 0.202 J1.07 01/24/2024 22:34TO-15 Benzene µg/m3 0.073 J1.69 01/24/2024 22:34TO-15 Carbon Disulfide µg/m3 0.060 J0.811 01/24/2024 22:34TO-15 Chloromethane µg/m3 0.067 13.8 01/24/2024 22:34TO-15 Cyclohexane µg/m3 0.161 2.84 01/24/2024 22:34TO-15 Dichlorodifluoromethane µg/m3 0.134 305 01/30/2024 18:33TO-15 Ethanol µg/m3 3.38 J1.16 01/24/2024 22:34TO-15 Ethylbenzene µg/m3 0.106 J1.51 01/24/2024 22:34TO-15 4-Ethyltoluene µg/m3 0.128 13.6 01/24/2024 22:34TO-15 Heptane µg/m3 0.143 J0.867 01/24/2024 22:34TO-15 n-Hexane µg/m3 0.047 44.2 01/24/2024 22:34TO-15 Isopropyl Alcohol µg/m3 0.139 3.74 01/24/2024 22:34TO-15 Methyl Ethyl Ketone (MEK)µg/m3 0.224 3.76 01/24/2024 22:34TO-15 Methylene Chloride µg/m3 0.488 J0.877 01/24/2024 22:34TO-15 Styrene µg/m3 0.124 1.74 01/24/2024 22:34TO-15 Tetrahydrofuran µg/m3 0.107 5.10 01/24/2024 22:34TO-15 Toluene µg/m3 0.090 J1.73 01/24/2024 22:34TO-15 Trichlorofluoromethane µg/m3 0.130 4.44 01/24/2024 22:34TO-15 1,2,4-Trimethylbenzene µg/m3 0.110 J1.75 01/24/2024 22:34TO-15 1,3,5-Trimethylbenzene µg/m3 0.236 J1.53 01/24/2024 22:34TO-15 o-Xylene µg/m3 0.157 J4.52 01/24/2024 22:34TO-15 m,p-Xylene µg/m3 0.217 V 94748IAS-1 (UDM) 11.6 01/24/2024 23:23TO-15 Acetone µg/m3 0.202 J0.856 01/24/2024 23:23TO-15 Benzene µg/m3 0.073 J1.08 01/24/2024 23:23TO-15 Carbon Disulfide µg/m3 0.060 J0.585 01/24/2024 23:23TO-15 Chloroform µg/m3 0.086 J0.858 01/24/2024 23:23TO-15 Chloromethane µg/m3 0.067 2.81 01/24/2024 23:23TO-15 Dichlorodifluoromethane µg/m3 0.134 270 01/30/2024 19:10TO-15 Ethanol µg/m3 3.38 J0.781 01/24/2024 23:23TO-15 Ethylbenzene µg/m3 0.106 J0.774 01/24/2024 23:23TO-15 Heptane µg/m3 0.143 J0.637 01/24/2024 23:23TO-15 n-Hexane µg/m3 0.047 B6.86 01/24/2024 23:23TO-15 Isopropyl Alcohol µg/m3 0.139 1.48 01/24/2024 23:23TO-15 Methyl Ethyl Ketone (MEK)µg/m3 0.224 J1.67 01/24/2024 23:23TO-15 Methylene Chloride µg/m3 0.488 Page 5 of 66 Summary of Detected Analytes QualifiersAnalyzedUnitsResult Report Number: Client Sample ID Method Parameters Lab Sample ID 24-019-0015 Report Limit Project:PAM.003 V 94748IAS-1 (UDM) J1.19 01/24/2024 23:23TO-15 Tetrachloroethene µg/m3 0.181 J0.763 01/24/2024 23:23TO-15 Tetrahydrofuran µg/m3 0.107 2.14 01/24/2024 23:23TO-15 Toluene µg/m3 0.090 J1.63 01/24/2024 23:23TO-15 Trichlorofluoromethane µg/m3 0.130 J0.683 01/24/2024 23:23TO-15 1,2,4-Trimethylbenzene µg/m3 0.110 J1.05 01/24/2024 23:23TO-15 o-Xylene µg/m3 0.157 J3.30 01/24/2024 23:23TO-15 m,p-Xylene µg/m3 0.217 V 94749IAS-3 B10.6 01/25/2024 20:42TO-15 Acetone µg/m3 0.202 J1.09 01/25/2024 20:42TO-15 Benzene µg/m3 0.073 J0.579 01/25/2024 20:42TO-15 Carbon Disulfide µg/m3 0.060 J1.62 01/25/2024 20:42TO-15 Chloroform µg/m3 0.086 J0.852 01/25/2024 20:42TO-15 Chloromethane µg/m3 0.067 2.84 01/25/2024 20:42TO-15 Dichlorodifluoromethane µg/m3 0.134 236 01/30/2024 19:46TO-15 Ethanol µg/m3 3.38 J0.451 01/25/2024 20:42TO-15 Ethylbenzene µg/m3 0.106 J0.511 01/25/2024 20:42TO-15 4-Ethyltoluene µg/m3 0.128 J0.557 01/25/2024 20:42TO-15 Heptane µg/m3 0.143 J0.870 01/25/2024 20:42TO-15 n-Hexane µg/m3 0.047 54.4 01/25/2024 20:42TO-15 Isopropyl Alcohol µg/m3 0.139 J1.15 01/25/2024 20:42TO-15 Methyl Ethyl Ketone (MEK)µg/m3 0.224 1.82 01/25/2024 20:42TO-15 Methylene Chloride µg/m3 0.488 J0.383 01/25/2024 20:42TO-15 Styrene µg/m3 0.124 J1.18 01/25/2024 20:42TO-15 Tetrachloroethene µg/m3 0.181 J0.271 01/25/2024 20:42TO-15 Tetrahydrofuran µg/m3 0.107 2.69 01/25/2024 20:42TO-15 Toluene µg/m3 0.090 J1.71 01/25/2024 20:42TO-15 Trichlorofluoromethane µg/m3 0.130 3.68 01/25/2024 20:42TO-15 1,2,4-Trimethylbenzene µg/m3 0.110 J1.17 01/25/2024 20:42TO-15 1,3,5-Trimethylbenzene µg/m3 0.236 J0.521 01/25/2024 20:42TO-15 o-Xylene µg/m3 0.157 J1.23 01/25/2024 20:42TO-15 m,p-Xylene µg/m3 0.217 V 94750IAS-2 16.4 01/25/2024 21:34TO-15 Acetone µg/m3 0.202 2.26 01/25/2024 21:34TO-15 Benzene µg/m3 0.073 J0.666 01/25/2024 21:34TO-15 Carbon Disulfide µg/m3 0.060 18.8 01/25/2024 21:34TO-15 Chloroform µg/m3 0.086 Page 6 of 66 Summary of Detected Analytes QualifiersAnalyzedUnitsResult Report Number: Client Sample ID Method Parameters Lab Sample ID 24-019-0015 Report Limit Project:PAM.003 V 94750IAS-2 J0.900 01/25/2024 21:34TO-15 Chloromethane µg/m3 0.067 2.84 01/25/2024 21:34TO-15 Dichlorodifluoromethane µg/m3 0.134 1230 01/30/2024 20:23TO-15 Ethanol µg/m3 3.38 J0.638 01/25/2024 21:34TO-15 Ethylbenzene µg/m3 0.106 J0.486 01/25/2024 21:34TO-15 4-Ethyltoluene µg/m3 0.128 J1.06 01/25/2024 21:34TO-15 Heptane µg/m3 0.143 J0.909 01/25/2024 21:34TO-15 n-Hexane µg/m3 0.047 44.0 01/25/2024 21:34TO-15 Isopropyl Alcohol µg/m3 0.139 2.00 01/25/2024 21:34TO-15 Methyl Ethyl Ketone (MEK)µg/m3 0.224 2.07 01/25/2024 21:34TO-15 Methylene Chloride µg/m3 0.488 J0.724 01/25/2024 21:34TO-15 Styrene µg/m3 0.124 J0.698 01/25/2024 21:34TO-15 Tetrachloroethene µg/m3 0.181 J0.480 01/25/2024 21:34TO-15 Tetrahydrofuran µg/m3 0.107 2.90 01/25/2024 21:34TO-15 Toluene µg/m3 0.090 J1.86 01/25/2024 21:34TO-15 Trichlorofluoromethane µg/m3 0.130 3.98 01/25/2024 21:34TO-15 1,2,4-Trimethylbenzene µg/m3 0.110 J1.32 01/25/2024 21:34TO-15 1,3,5-Trimethylbenzene µg/m3 0.236 J0.833 01/25/2024 21:34TO-15 o-Xylene µg/m3 0.157 J2.33 01/25/2024 21:34TO-15 m,p-Xylene µg/m3 0.217 V 94751IAS-OFF-2 53.1 01/25/2024 22:22TO-15 Acetone µg/m3 0.202 J1.33 01/25/2024 22:22TO-15 Benzene µg/m3 0.073 J1.09 01/25/2024 22:22TO-15 Carbon Disulfide µg/m3 0.060 J0.825 01/25/2024 22:22TO-15 Chloromethane µg/m3 0.067 6.04 01/25/2024 22:22TO-15 Cyclohexane µg/m3 0.161 2.86 01/25/2024 22:22TO-15 Dichlorodifluoromethane µg/m3 0.134 206 01/30/2024 21:00TO-15 Ethanol µg/m3 3.38 J1.21 01/25/2024 22:22TO-15 Ethylbenzene µg/m3 0.106 2.83 01/25/2024 22:22TO-15 4-Ethyltoluene µg/m3 0.128 4.54 01/25/2024 22:22TO-15 Heptane µg/m3 0.143 J0.905 01/25/2024 22:22TO-15 n-Hexane µg/m3 0.047 31.2 01/25/2024 22:22TO-15 Isopropyl Alcohol µg/m3 0.139 4.14 01/25/2024 22:22TO-15 Methyl Ethyl Ketone (MEK)µg/m3 0.224 2.83 01/25/2024 22:22TO-15 4-Methyl-2-Pentanone µg/m3 0.121 1.98 01/25/2024 22:22TO-15 Methylene Chloride µg/m3 0.488 4.70 01/25/2024 22:22TO-15 Naphthalene µg/m3 0.183 Page 7 of 66 Summary of Detected Analytes QualifiersAnalyzedUnitsResult Report Number: Client Sample ID Method Parameters Lab Sample ID 24-019-0015 Report Limit Project:PAM.003 V 94751IAS-OFF-2 J0.894 01/25/2024 22:22TO-15 Styrene µg/m3 0.124 J0.813 01/25/2024 22:22TO-15 Tetrachloroethene µg/m3 0.181 2.15 01/25/2024 22:22TO-15 Tetrahydrofuran µg/m3 0.107 6.76 01/25/2024 22:22TO-15 Toluene µg/m3 0.090 J1.66 01/25/2024 22:22TO-15 Trichlorofluoromethane µg/m3 0.130 8.62 01/25/2024 22:22TO-15 1,2,4-Trimethylbenzene µg/m3 0.110 J2.30 01/25/2024 22:22TO-15 1,3,5-Trimethylbenzene µg/m3 0.236 J1.80 01/25/2024 22:22TO-15 o-Xylene µg/m3 0.157 J5.41 01/25/2024 22:22TO-15 m,p-Xylene µg/m3 0.217 V 94752IAS-1 10.9 01/25/2024 23:10TO-15 Acetone µg/m3 0.202 J0.916 01/25/2024 23:10TO-15 Benzene µg/m3 0.073 J0.538 01/25/2024 23:10TO-15 Carbon Disulfide µg/m3 0.060 J1.27 01/25/2024 23:10TO-15 Chloroform µg/m3 0.086 J0.885 01/25/2024 23:10TO-15 Chloromethane µg/m3 0.067 2.76 01/25/2024 23:10TO-15 Dichlorodifluoromethane µg/m3 0.134 169 01/30/2024 21:36TO-15 Ethanol µg/m3 3.38 J0.777 01/25/2024 23:10TO-15 Ethylbenzene µg/m3 0.106 J0.545 01/25/2024 23:10TO-15 4-Ethyltoluene µg/m3 0.128 J0.495 01/25/2024 23:10TO-15 Heptane µg/m3 0.143 J0.666 01/25/2024 23:10TO-15 n-Hexane µg/m3 0.047 26.8 01/25/2024 23:10TO-15 Isopropyl Alcohol µg/m3 0.139 J1.19 01/25/2024 23:10TO-15 Methyl Ethyl Ketone (MEK)µg/m3 0.224 J1.40 01/25/2024 23:10TO-15 Methylene Chloride µg/m3 0.488 J0.438 01/25/2024 23:10TO-15 Styrene µg/m3 0.124 J1.57 01/25/2024 23:10TO-15 Tetrachloroethene µg/m3 0.181 J0.327 01/25/2024 23:10TO-15 Tetrahydrofuran µg/m3 0.107 1.91 01/25/2024 23:10TO-15 Toluene µg/m3 0.090 J1.69 01/25/2024 23:10TO-15 Trichlorofluoromethane µg/m3 0.130 3.47 01/25/2024 23:10TO-15 1,2,4-Trimethylbenzene µg/m3 0.110 J1.08 01/25/2024 23:10TO-15 1,3,5-Trimethylbenzene µg/m3 0.236 J1.04 01/25/2024 23:10TO-15 o-Xylene µg/m3 0.157 J3.26 01/25/2024 23:10TO-15 m,p-Xylene µg/m3 0.217 V 94753IAS-3 (UDM) 12.9 01/26/2024 00:01TO-15 Acetone µg/m3 0.202 J0.865 01/26/2024 00:01TO-15 Benzene µg/m3 0.073 Page 8 of 66 Summary of Detected Analytes QualifiersAnalyzedUnitsResult Report Number: Client Sample ID Method Parameters Lab Sample ID 24-019-0015 Report Limit Project:PAM.003 V 94753IAS-3 (UDM) J0.974 01/26/2024 00:01TO-15 Carbon Disulfide µg/m3 0.060 J1.36 01/26/2024 00:01TO-15 Chloroform µg/m3 0.086 J0.813 01/26/2024 00:01TO-15 Chloromethane µg/m3 0.067 2.76 01/26/2024 00:01TO-15 Dichlorodifluoromethane µg/m3 0.134 353 01/30/2024 22:13TO-15 Ethanol µg/m3 3.38 J0.373 01/26/2024 00:01TO-15 Ethylbenzene µg/m3 0.106 J0.922 01/26/2024 00:01TO-15 Heptane µg/m3 0.143 J0.637 01/26/2024 00:01TO-15 n-Hexane µg/m3 0.047 B10.1 01/26/2024 00:01TO-15 Isopropyl Alcohol µg/m3 0.139 1.55 01/26/2024 00:01TO-15 Methyl Ethyl Ketone (MEK)µg/m3 0.224 J1.59 01/26/2024 00:01TO-15 Methylene Chloride µg/m3 0.488 J2.12 01/26/2024 00:01TO-15 Tetrachloroethene µg/m3 0.181 J0.917 01/26/2024 00:01TO-15 Tetrahydrofuran µg/m3 0.107 2.65 01/26/2024 00:01TO-15 Toluene µg/m3 0.090 J1.62 01/26/2024 00:01TO-15 Trichlorofluoromethane µg/m3 0.130 J1.25 01/26/2024 00:01TO-15 1,2,4-Trimethylbenzene µg/m3 0.110 J0.447 01/26/2024 00:01TO-15 1,3,5-Trimethylbenzene µg/m3 0.236 J0.455 01/26/2024 00:01TO-15 o-Xylene µg/m3 0.157 J1.20 01/26/2024 00:01TO-15 m,p-Xylene µg/m3 0.217 V 94754IAS-2 (UDM) B5.92 01/26/2024 00:48TO-15 Acetone µg/m3 0.202 J0.721 01/26/2024 00:48TO-15 Benzene µg/m3 0.073 J1.05 01/26/2024 00:48TO-15 Carbon Disulfide µg/m3 0.060 J0.624 01/26/2024 00:48TO-15 Chloroform µg/m3 0.086 J0.877 01/26/2024 00:48TO-15 Chloromethane µg/m3 0.067 2.77 01/26/2024 00:48TO-15 Dichlorodifluoromethane µg/m3 0.134 12.9 01/26/2024 00:48TO-15 Ethanol µg/m3 0.169 J0.360 01/26/2024 00:48TO-15 Heptane µg/m3 0.143 J0.475 01/26/2024 00:48TO-15 n-Hexane µg/m3 0.047 JB3.44 01/26/2024 00:48TO-15 Isopropyl Alcohol µg/m3 0.139 J0.961 01/26/2024 00:48TO-15 Methyl Ethyl Ketone (MEK)µg/m3 0.224 J1.42 01/26/2024 00:48TO-15 Methylene Chloride µg/m3 0.488 J0.645 01/26/2024 00:48TO-15 Tetrahydrofuran µg/m3 0.107 J1.46 01/26/2024 00:48TO-15 Toluene µg/m3 0.090 J1.55 01/26/2024 00:48TO-15 Trichlorofluoromethane µg/m3 0.130 J0.308 01/26/2024 00:48TO-15 o-Xylene µg/m3 0.157 Page 9 of 66 Summary of Detected Analytes QualifiersAnalyzedUnitsResult Report Number: Client Sample ID Method Parameters Lab Sample ID 24-019-0015 Report Limit Project:PAM.003 V 94754IAS-2 (UDM) J0.746 01/26/2024 00:48TO-15 m,p-Xylene µg/m3 0.217 V 94755IAS-BKG B8.25 01/26/2024 01:36TO-15 Acetone µg/m3 0.202 J0.888 01/26/2024 01:36TO-15 Benzene µg/m3 0.073 J0.890 01/26/2024 01:36TO-15 Carbon Disulfide µg/m3 0.060 J0.836 01/26/2024 01:36TO-15 Chloromethane µg/m3 0.067 2.80 01/26/2024 01:36TO-15 Dichlorodifluoromethane µg/m3 0.134 J0.343 01/26/2024 01:36TO-15 Ethylbenzene µg/m3 0.106 J0.605 01/26/2024 01:36TO-15 1,1,2-Trichloro-1,2,2-trifluoroethane µg/m3 0.561 J0.454 01/26/2024 01:36TO-15 Heptane µg/m3 0.143 J0.609 01/26/2024 01:36TO-15 n-Hexane µg/m3 0.047 JB3.13 01/26/2024 01:36TO-15 Isopropyl Alcohol µg/m3 0.139 2.90 01/26/2024 01:36TO-15 Methyl Ethyl Ketone (MEK)µg/m3 0.224 J1.23 01/26/2024 01:36TO-15 Methylene Chloride µg/m3 0.488 2.83 01/26/2024 01:36TO-15 Tetrahydrofuran µg/m3 0.107 2.08 01/26/2024 01:36TO-15 Toluene µg/m3 0.090 J1.02 01/26/2024 01:36TO-15 Trichloroethene µg/m3 0.199 J1.64 01/26/2024 01:36TO-15 Trichlorofluoromethane µg/m3 0.130 J0.351 01/26/2024 01:36TO-15 o-Xylene µg/m3 0.157 J0.903 01/26/2024 01:36TO-15 m,p-Xylene µg/m3 0.217 J1.25 01/26/2024 01:36TO-15 Xylene (Total)µg/m3 0.157 V 94756MP-P1 B6.79 01/26/2024 14:09TO-15 Acetone µg/m3 0.202 J0.737 01/26/2024 14:09TO-15 Chloroform µg/m3 0.086 13.4 01/26/2024 14:09TO-15 Dichlorodifluoromethane µg/m3 0.134 J0.968 01/26/2024 14:09TO-15 Ethylbenzene µg/m3 0.106 J0.334 01/26/2024 14:09TO-15 n-Hexane µg/m3 0.047 JB2.92 01/26/2024 14:09TO-15 Isopropyl Alcohol µg/m3 0.139 J0.931 01/26/2024 14:09TO-15 Methyl Ethyl Ketone (MEK)µg/m3 0.224 J1.46 01/26/2024 14:09TO-15 Methylene Chloride µg/m3 0.488 76.1 01/26/2024 14:09TO-15 Tetrachloroethene µg/m3 0.181 1.57 01/26/2024 14:09TO-15 Tetrahydrofuran µg/m3 0.107 JB0.395 01/26/2024 14:09TO-15 Toluene µg/m3 0.090 J0.932 01/26/2024 14:09TO-15 1,1,1-Trichloroethane µg/m3 0.144 J1.74 01/26/2024 14:09TO-15 Trichlorofluoromethane µg/m3 0.130 J1.53 01/26/2024 14:09TO-15 o-Xylene µg/m3 0.157 Page 10 of 66 Summary of Detected Analytes QualifiersAnalyzedUnitsResult Report Number: Client Sample ID Method Parameters Lab Sample ID 24-019-0015 Report Limit Project:PAM.003 V 94756MP-P1 J4.52 01/26/2024 14:09TO-15 m,p-Xylene µg/m3 0.217 J6.05 01/26/2024 14:09TO-15 Xylene (Total)µg/m3 0.157 Page 11 of 66 Client: Hart & Hickman (Charlotte) CASE NARRATIVE Project: PAM.003 Lab Report Number: 24-019-0015 Date: 1/31/2024 Report Comments Revised Report: Revision 1 Sample reporting lists have been updated. Page 12 of 66 , REPORT OF ANALYSISReport Number : Project Information : NC 28203 24-019-0015 01102 Hart & Hickman (Charlotte) 2923 South Tryon St. Ste 100 Matt Vawter Charlotte Received : 01/19/2024 PAM.003 Report Date : 01/31/2024 Sample ID : Lab No : Sampled:IAS-P1 94745 Matrix: 1/18/2024 8:00 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):01/24/24 09:00 14.7 µg/m3 0.202 4.75Acetone 1 01/24/24 20:53 V42735ENM 1.01 J µg/m3 0.073 1.60Benzene 1 01/24/24 20:53 V42735ENM <0.147 µg/m3 0.147 10.4Benzyl Chloride 1 01/24/24 20:53 V42735ENM <0.150 µg/m3 0.150 3.35Bromodichloromethane 1 01/24/24 20:53 V42735ENM <0.153 µg/m3 0.153 5.17Bromoform 1 01/24/24 20:53 V42735ENM <0.115 µg/m3 0.115 1.94Bromomethane 1 01/24/24 20:53 V42735ENM <0.328 µg/m3 0.328 1.111,3-Butadiene 1 01/24/24 20:53 V42735ENM 1.29 J µg/m3 0.060 6.23Carbon Disulfide 1 01/24/24 20:53 V42735ENM <0.155 µg/m3 0.155 3.15Carbon Tetrachloride 1 01/24/24 20:53 V42735ENM <0.107 µg/m3 0.107 2.30Chlorobenzene 1 01/24/24 20:53 V42735ENM <0.208 µg/m3 0.208 4.26Chlorodibromomethane 1 01/24/24 20:53 V42735ENM <0.164 µg/m3 0.164 1.32Chloroethane 1 01/24/24 20:53 V42735ENM <0.086 µg/m3 0.086 2.44Chloroform 1 01/24/24 20:53 V42735ENM 0.823 J µg/m3 0.067 1.03Chloromethane 1 01/24/24 20:53 V42735ENM <0.161 µg/m3 0.161 3.44Cyclohexane 1 01/24/24 20:53 V42735ENM <0.151 µg/m3 0.151 3.841,2-Dibromoethane 1 01/24/24 20:53 V42735ENM <0.096 µg/m3 0.096 3.011,2-Dichlorobenzene 1 01/24/24 20:53 V42735ENM <0.174 µg/m3 0.174 12.01,3-Dichlorobenzene 1 01/24/24 20:53 V42735ENM <0.186 µg/m3 0.186 3.011,4-Dichlorobenzene 1 01/24/24 20:53 V42735ENM 2.79 µg/m3 0.134 2.47Dichlorodifluoromethane 1 01/24/24 20:53 V42735ENM <0.101 µg/m3 0.101 2.021,1-Dichloroethane 1 01/24/24 20:53 V42735ENM <0.129 µg/m3 0.129 2.021,2-Dichloroethane 1 01/24/24 20:53 V42735ENM Qualifiers/ Definitions Dilution FactorDFAnalyte detected in blankB Method Quantitation LimitMQLEstimated valueJ Page 13 of 66 , REPORT OF ANALYSISReport Number : Project Information : NC 28203 24-019-0015 01102 Hart & Hickman (Charlotte) 2923 South Tryon St. Ste 100 Matt Vawter Charlotte Received : 01/19/2024 PAM.003 Report Date : 01/31/2024 Sample ID : Lab No : Sampled:IAS-P1 94745 Matrix: 1/18/2024 8:00 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):01/24/24 09:00 <0.107 µg/m3 0.107 1.981,1-Dichloroethene 1 01/24/24 20:53 V42735ENM <0.095 µg/m3 0.095 1.98cis-1,2-Dichloroethene 1 01/24/24 20:53 V42735ENM <0.108 µg/m3 0.108 1.98trans-1,2-Dichloroethene 1 01/24/24 20:53 V42735ENM <0.205 µg/m3 0.205 2.311,2-Dichloropropane 1 01/24/24 20:53 V42735ENM <0.622 µg/m3 0.622 3.501,2-Dichlorotetrafluoroethane 1 01/24/24 20:53 V42735ENM <0.178 µg/m3 0.178 2.27cis-1,3-Dichloropropene 1 01/24/24 20:53 V42735ENM <0.178 µg/m3 0.178 2.27trans-1,3-Dichloropropene 1 01/24/24 20:53 V42735ENM <0.435 µg/m3 0.435 1.801,4-Dioxane 1 01/24/24 20:53 V42735ENM <0.136 µg/m3 0.136 1.80Ethyl Acetate 1 01/24/24 20:53 V42735ENM 0.486 J µg/m3 0.106 2.17Ethylbenzene 1 01/24/24 20:53 V42735ENM <0.128 µg/m3 0.128 2.464-Ethyltoluene 1 01/24/24 20:53 V42735ENM 0.574 J µg/m3 0.561 3.831,1,2-Trichloro-1,2,2-trifluoroethane 1 01/24/24 20:53 V42735ENM 0.459 J µg/m3 0.143 2.05Heptane 1 01/24/24 20:53 V42735ENM <0.330 µg/m3 0.330 5.33Hexachlorobutadiene 1 01/24/24 20:53 V42735ENM 0.687 J µg/m3 0.047 1.76n-Hexane 1 01/24/24 20:53 V42735ENM <0.285 µg/m3 0.285 2.052-Hexanone 1 01/24/24 20:53 V42735ENM 3.97 JB µg/m3 0.139 4.92Isopropyl Alcohol 1 01/24/24 20:53 V42735ENM 1.38 J µg/m3 0.224 1.47Methyl Ethyl Ketone (MEK)1 01/24/24 20:53 V42735ENM <0.033 µg/m3 0.033 1.80Methyl tert-butyl ether (MTBE)1 01/24/24 20:53 V42735ENM <0.121 µg/m3 0.121 2.054-Methyl-2-Pentanone 1 01/24/24 20:53 V42735ENM 1.54 J µg/m3 0.488 1.74Methylene Chloride 1 01/24/24 20:53 V42735ENM <0.183 µg/m3 0.183 2.62Naphthalene 1 01/24/24 20:53 V42735ENM Qualifiers/ Definitions Dilution FactorDFAnalyte detected in blankB Method Quantitation LimitMQLEstimated valueJ Page 14 of 66 , REPORT OF ANALYSISReport Number : Project Information : NC 28203 24-019-0015 01102 Hart & Hickman (Charlotte) 2923 South Tryon St. Ste 100 Matt Vawter Charlotte Received : 01/19/2024 PAM.003 Report Date : 01/31/2024 Sample ID : Lab No : Sampled:IAS-P1 94745 Matrix: 1/18/2024 8:00 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):01/24/24 09:00 <0.242 µg/m3 0.242 0.860Propene 1 01/24/24 20:53 V42735ENM <0.124 µg/m3 0.124 2.13Styrene 1 01/24/24 20:53 V42735ENM <0.104 µg/m3 0.104 3.431,1,2,2-Tetrachloroethane 1 01/24/24 20:53 V42735ENM <0.181 µg/m3 0.181 3.39 1 01/24/24 20:53 V42735ENM 0.392 J µg/m3 0.107 1.47 1 01/24/24 20:53 V42735ENM 2.00 µg/m3 0.090 1.88 1 01/24/24 20:53 V42735ENM <0.209 µg/m3 0.209 3.711,2,4-Trichlorobenzene 1 01/24/24 20:53 V42735ENM <0.144 µg/m3 0.144 2.731,1,1-Trichloroethane 1 01/24/24 20:53 V42735ENM <0.087 µg/m3 0.087 2.731,1,2-Trichloroethane 1 01/24/24 20:53 V42735ENM <0.199 µg/m3 0.199 2.15 1 01/24/24 20:53 V42735ENM 1.63 J µg/m3 0.130 2.81 1 01/24/24 20:53 V42735ENM <0.110 µg/m3 0.110 2.461,2,4-Trimethylbenzene 1 01/24/24 20:53 V42735ENM <0.236 µg/m3 0.236 2.461,3,5-Trimethylbenzene 1 01/24/24 20:53 V42735ENM <0.224 µg/m3 0.224 1.76Vinyl Acetate 1 01/24/24 20:53 V42735ENM <0.127 µg/m3 0.127 1.28Vinyl Chloride 1 01/24/24 20:53 V42735ENM 0.625 J µg/m3 0.157 2.17o-Xylene 1 01/24/24 20:53 V42735ENM 1.83 J µg/m3 0.217 5.65m,p-Xylene 1 01/24/24 20:53 V42735ENM 2.46 J µg/m3 0.157 2.17Xylene (Total)1 01/24/24 20:53 V42735 Surrogate: 4-Bromofluorobenzene Qualifiers/ Definitions Dilution FactorDFAnalyte detected in blankB Method Quantitation LimitMQLEstimated valueJ Page 15 of 66 , REPORT OF ANALYSISReport Number : Project Information : NC 28203 24-019-0015 01102 Hart & Hickman (Charlotte) 2923 South Tryon St. Ste 100 Matt Vawter Charlotte Received : 01/19/2024 PAM.003 Report Date : 01/31/2024 Sample ID : Lab No : Sampled:IAS-DUP 94746 Matrix: 1/18/2024 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):01/24/24 09:00 14.3 µg/m3 0.202 4.75Acetone 1 01/24/24 21:42 V42735ENM 1.02 J µg/m3 0.073 1.60Benzene 1 01/24/24 21:42 V42735ENM <0.147 µg/m3 0.147 10.4Benzyl Chloride 1 01/24/24 21:42 V42735ENM <0.150 µg/m3 0.150 3.35Bromodichloromethane 1 01/24/24 21:42 V42735ENM <0.153 µg/m3 0.153 5.17Bromoform 1 01/24/24 21:42 V42735ENM <0.115 µg/m3 0.115 1.94Bromomethane 1 01/24/24 21:42 V42735ENM <0.328 µg/m3 0.328 1.111,3-Butadiene 1 01/24/24 21:42 V42735ENM 0.750 J µg/m3 0.060 6.23Carbon Disulfide 1 01/24/24 21:42 V42735ENM <0.155 µg/m3 0.155 3.15Carbon Tetrachloride 1 01/24/24 21:42 V42735ENM <0.107 µg/m3 0.107 2.30Chlorobenzene 1 01/24/24 21:42 V42735ENM <0.208 µg/m3 0.208 4.26Chlorodibromomethane 1 01/24/24 21:42 V42735ENM <0.164 µg/m3 0.164 1.32Chloroethane 1 01/24/24 21:42 V42735ENM <0.086 µg/m3 0.086 2.44Chloroform 1 01/24/24 21:42 V42735ENM 0.797 J µg/m3 0.067 1.03Chloromethane 1 01/24/24 21:42 V42735ENM <0.161 µg/m3 0.161 3.44Cyclohexane 1 01/24/24 21:42 V42735ENM <0.151 µg/m3 0.151 3.841,2-Dibromoethane 1 01/24/24 21:42 V42735ENM <0.096 µg/m3 0.096 3.011,2-Dichlorobenzene 1 01/24/24 21:42 V42735ENM <0.174 µg/m3 0.174 12.01,3-Dichlorobenzene 1 01/24/24 21:42 V42735ENM <0.186 µg/m3 0.186 3.011,4-Dichlorobenzene 1 01/24/24 21:42 V42735ENM 2.78 µg/m3 0.134 2.47Dichlorodifluoromethane 1 01/24/24 21:42 V42735ENM <0.101 µg/m3 0.101 2.021,1-Dichloroethane 1 01/24/24 21:42 V42735ENM <0.129 µg/m3 0.129 2.021,2-Dichloroethane 1 01/24/24 21:42 V42735ENM Qualifiers/ Definitions Dilution FactorDFAnalyte detected in blankB Method Quantitation LimitMQLEstimated valueJ Page 16 of 66 , REPORT OF ANALYSISReport Number : Project Information : NC 28203 24-019-0015 01102 Hart & Hickman (Charlotte) 2923 South Tryon St. Ste 100 Matt Vawter Charlotte Received : 01/19/2024 PAM.003 Report Date : 01/31/2024 Sample ID : Lab No : Sampled:IAS-DUP 94746 Matrix: 1/18/2024 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):01/24/24 09:00 <0.107 µg/m3 0.107 1.981,1-Dichloroethene 1 01/24/24 21:42 V42735ENM <0.095 µg/m3 0.095 1.98cis-1,2-Dichloroethene 1 01/24/24 21:42 V42735ENM <0.108 µg/m3 0.108 1.98trans-1,2-Dichloroethene 1 01/24/24 21:42 V42735ENM <0.205 µg/m3 0.205 2.311,2-Dichloropropane 1 01/24/24 21:42 V42735ENM <0.622 µg/m3 0.622 3.501,2-Dichlorotetrafluoroethane 1 01/24/24 21:42 V42735ENM <0.178 µg/m3 0.178 2.27cis-1,3-Dichloropropene 1 01/24/24 21:42 V42735ENM <0.178 µg/m3 0.178 2.27trans-1,3-Dichloropropene 1 01/24/24 21:42 V42735ENM <0.435 µg/m3 0.435 1.801,4-Dioxane 1 01/24/24 21:42 V42735ENM <0.136 µg/m3 0.136 1.80Ethyl Acetate 1 01/24/24 21:42 V42735ENM 0.590 J µg/m3 0.106 2.17Ethylbenzene 1 01/24/24 21:42 V42735ENM <0.128 µg/m3 0.128 2.464-Ethyltoluene 1 01/24/24 21:42 V42735ENM <0.561 µg/m3 0.561 3.831,1,2-Trichloro-1,2,2-trifluoroethane 1 01/24/24 21:42 V42735ENM 0.581 J µg/m3 0.143 2.05Heptane 1 01/24/24 21:42 V42735ENM <0.330 µg/m3 0.330 5.33Hexachlorobutadiene 1 01/24/24 21:42 V42735ENM 0.662 J µg/m3 0.047 1.76n-Hexane 1 01/24/24 21:42 V42735ENM <0.285 µg/m3 0.285 2.052-Hexanone 1 01/24/24 21:42 V42735ENM 3.92 JB µg/m3 0.139 4.92Isopropyl Alcohol 1 01/24/24 21:42 V42735ENM 1.38 J µg/m3 0.224 1.47Methyl Ethyl Ketone (MEK)1 01/24/24 21:42 V42735ENM <0.033 µg/m3 0.033 1.80Methyl tert-butyl ether (MTBE)1 01/24/24 21:42 V42735ENM <0.121 µg/m3 0.121 2.054-Methyl-2-Pentanone 1 01/24/24 21:42 V42735ENM 1.32 J µg/m3 0.488 1.74Methylene Chloride 1 01/24/24 21:42 V42735ENM <0.183 µg/m3 0.183 2.62Naphthalene 1 01/24/24 21:42 V42735ENM Qualifiers/ Definitions Dilution FactorDFAnalyte detected in blankB Method Quantitation LimitMQLEstimated valueJ Page 17 of 66 , REPORT OF ANALYSISReport Number : Project Information : NC 28203 24-019-0015 01102 Hart & Hickman (Charlotte) 2923 South Tryon St. Ste 100 Matt Vawter Charlotte Received : 01/19/2024 PAM.003 Report Date : 01/31/2024 Sample ID : Lab No : Sampled:IAS-DUP 94746 Matrix: 1/18/2024 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):01/24/24 09:00 <0.242 µg/m3 0.242 0.860Propene 1 01/24/24 21:42 V42735ENM <0.124 µg/m3 0.124 2.13Styrene 1 01/24/24 21:42 V42735ENM <0.104 µg/m3 0.104 3.431,1,2,2-Tetrachloroethane 1 01/24/24 21:42 V42735ENM <0.181 µg/m3 0.181 3.39 1 01/24/24 21:42 V42735ENM 0.406 J µg/m3 0.107 1.47 1 01/24/24 21:42 V42735ENM 2.16 µg/m3 0.090 1.88 1 01/24/24 21:42 V42735ENM <0.209 µg/m3 0.209 3.711,2,4-Trichlorobenzene 1 01/24/24 21:42 V42735ENM <0.144 µg/m3 0.144 2.731,1,1-Trichloroethane 1 01/24/24 21:42 V42735ENM <0.087 µg/m3 0.087 2.731,1,2-Trichloroethane 1 01/24/24 21:42 V42735ENM <0.199 µg/m3 0.199 2.15 1 01/24/24 21:42 V42735ENM 1.58 J µg/m3 0.130 2.81 1 01/24/24 21:42 V42735ENM <0.110 µg/m3 0.110 2.461,2,4-Trimethylbenzene 1 01/24/24 21:42 V42735ENM <0.236 µg/m3 0.236 2.461,3,5-Trimethylbenzene 1 01/24/24 21:42 V42735ENM <0.224 µg/m3 0.224 1.76Vinyl Acetate 1 01/24/24 21:42 V42735ENM <0.127 µg/m3 0.127 1.28Vinyl Chloride 1 01/24/24 21:42 V42735ENM 0.772 J µg/m3 0.157 2.17o-Xylene 1 01/24/24 21:42 V42735ENM 2.21 J µg/m3 0.217 5.65m,p-Xylene 1 01/24/24 21:42 V42735ENM 2.98 J µg/m3 0.157 2.17Xylene (Total)1 01/24/24 21:42 V42735 Surrogate: 4-Bromofluorobenzene Qualifiers/ Definitions Dilution FactorDFAnalyte detected in blankB Method Quantitation LimitMQLEstimated valueJ Page 18 of 66 , REPORT OF ANALYSISReport Number : Project Information : NC 28203 24-019-0015 01102 Hart & Hickman (Charlotte) 2923 South Tryon St. Ste 100 Matt Vawter Charlotte Received : 01/19/2024 PAM.003 Report Date : 01/31/2024 Sample ID : Lab No : Sampled:IAS-OFF-1 94747 Matrix: 1/18/2024 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):01/24/24 09:00 V42983 01/30/24 07:00 34.8 µg/m3 0.202 4.75Acetone 1 01/24/24 22:34 V42935ENM 1.07 J µg/m3 0.073 1.60Benzene 1 01/24/24 22:34 V42935ENM 1.69 J µg/m3 0.060 6.23Carbon Disulfide 1 01/24/24 22:34 V42935ENM <0.155 µg/m3 0.155 3.15Carbon Tetrachloride 1 01/24/24 22:34 V42935ENM <0.086 µg/m3 0.086 2.44Chloroform 1 01/24/24 22:34 V42935ENM 0.811 J µg/m3 0.067 1.03Chloromethane 1 01/24/24 22:34 V42935ENM 13.8 µg/m3 0.161 3.44Cyclohexane 1 01/24/24 22:34 V42935ENM <0.096 µg/m3 0.096 3.011,2-Dichlorobenzene 1 01/24/24 22:34 V42935ENM <0.186 µg/m3 0.186 3.011,4-Dichlorobenzene 1 01/24/24 22:34 V42935ENM 2.84 µg/m3 0.134 2.47Dichlorodifluoromethane 1 01/24/24 22:34 V42935ENM <0.095 µg/m3 0.095 1.98cis-1,2-Dichloroethene 1 01/24/24 22:34 V42935ENM 305 µg/m3 3.38 100Ethanol 20 01/30/24 18:33 V42985ENM 1.16 J µg/m3 0.106 2.17Ethylbenzene 1 01/24/24 22:34 V42935ENM 1.51 J µg/m3 0.128 2.464-Ethyltoluene 1 01/24/24 22:34 V42935ENM 13.6 µg/m3 0.143 2.05Heptane 1 01/24/24 22:34 V42935ENM 0.867 J µg/m3 0.047 1.76n-Hexane 1 01/24/24 22:34 V42935ENM <0.285 µg/m3 0.285 2.052-Hexanone 1 01/24/24 22:34 V42935ENM 44.2 µg/m3 0.139 4.92Isopropyl Alcohol 1 01/24/24 22:34 V42935ENM 3.74 µg/m3 0.224 1.47Methyl Ethyl Ketone (MEK)1 01/24/24 22:34 V42935ENM <0.121 µg/m3 0.121 2.054-Methyl-2-Pentanone 1 01/24/24 22:34 V42935ENM 3.76 µg/m3 0.488 1.74Methylene Chloride 1 01/24/24 22:34 V42935ENM <0.183 µg/m3 0.183 2.62Naphthalene 1 01/24/24 22:34 V42935ENM Qualifiers/ Definitions Dilution FactorDFAnalyte detected in blankB Method Quantitation LimitMQLEstimated valueJ Page 19 of 66 , REPORT OF ANALYSISReport Number : Project Information : NC 28203 24-019-0015 01102 Hart & Hickman (Charlotte) 2923 South Tryon St. Ste 100 Matt Vawter Charlotte Received : 01/19/2024 PAM.003 Report Date : 01/31/2024 Sample ID : Lab No : Sampled:IAS-OFF-1 94747 Matrix: 1/18/2024 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):01/24/24 09:00 V42983 01/30/24 07:00 <0.242 µg/m3 0.242 0.860Propene 1 01/24/24 22:34 V42935ENM 0.877 J µg/m3 0.124 2.13Styrene 1 01/24/24 22:34 V42935ENM <0.181 µg/m3 0.181 3.39 1 01/24/24 22:34 V42935ENM 1.74 µg/m3 0.107 1.47 1 01/24/24 22:34 V42935ENM 5.10 µg/m3 0.090 1.88 1 01/24/24 22:34 V42935ENM <0.199 µg/m3 0.199 2.15 1 01/24/24 22:34 V42935ENM 1.73 J µg/m3 0.130 2.81 1 01/24/24 22:34 V42935ENM 4.44 µg/m3 0.110 2.461,2,4-Trimethylbenzene 1 01/24/24 22:34 V42935ENM 1.75 J µg/m3 0.236 2.461,3,5-Trimethylbenzene 1 01/24/24 22:34 V42935ENM 1.53 J µg/m3 0.157 2.17o-Xylene 1 01/24/24 22:34 V42935ENM 4.52 J µg/m3 0.217 5.65m,p-Xylene 1 01/24/24 22:34 V42935ENM Surrogate: 4-Bromofluorobenzene Surrogate: 4-Bromofluorobenzene Surrogate: 4-Bromofluorobenzene Qualifiers/ Definitions Dilution FactorDFAnalyte detected in blankB Method Quantitation LimitMQLEstimated valueJ Page 20 of 66 , REPORT OF ANALYSISReport Number : Project Information : NC 28203 24-019-0015 01102 Hart & Hickman (Charlotte) 2923 South Tryon St. Ste 100 Matt Vawter Charlotte Received : 01/19/2024 PAM.003 Report Date : 01/31/2024 Sample ID : Lab No : Sampled:IAS-1 (UDM) 94748 Matrix: 1/18/2024 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):01/24/24 09:00 V42983 01/30/24 07:00 11.6 µg/m3 0.202 4.75Acetone 1 01/24/24 23:23 V42935ENM 0.856 J µg/m3 0.073 1.60Benzene 1 01/24/24 23:23 V42935ENM 1.08 J µg/m3 0.060 6.23Carbon Disulfide 1 01/24/24 23:23 V42935ENM <0.155 µg/m3 0.155 3.15Carbon Tetrachloride 1 01/24/24 23:23 V42935ENM 0.585 J µg/m3 0.086 2.44Chloroform 1 01/24/24 23:23 V42935ENM 0.858 J µg/m3 0.067 1.03Chloromethane 1 01/24/24 23:23 V42935ENM <0.161 µg/m3 0.161 3.44Cyclohexane 1 01/24/24 23:23 V42935ENM <0.096 µg/m3 0.096 3.011,2-Dichlorobenzene 1 01/24/24 23:23 V42935ENM <0.186 µg/m3 0.186 3.011,4-Dichlorobenzene 1 01/24/24 23:23 V42935ENM 2.81 µg/m3 0.134 2.47Dichlorodifluoromethane 1 01/24/24 23:23 V42935ENM <0.095 µg/m3 0.095 1.98cis-1,2-Dichloroethene 1 01/24/24 23:23 V42935ENM 270 µg/m3 3.38 100Ethanol 20 01/30/24 19:10 V42985ENM 0.781 J µg/m3 0.106 2.17Ethylbenzene 1 01/24/24 23:23 V42935ENM <0.128 µg/m3 0.128 2.464-Ethyltoluene 1 01/24/24 23:23 V42935ENM 0.774 J µg/m3 0.143 2.05Heptane 1 01/24/24 23:23 V42935ENM 0.637 J µg/m3 0.047 1.76n-Hexane 1 01/24/24 23:23 V42935ENM <0.285 µg/m3 0.285 2.052-Hexanone 1 01/24/24 23:23 V42935ENM 6.86 B µg/m3 0.139 4.92Isopropyl Alcohol 1 01/24/24 23:23 V42935ENM 1.48 µg/m3 0.224 1.47Methyl Ethyl Ketone (MEK)1 01/24/24 23:23 V42935ENM <0.121 µg/m3 0.121 2.054-Methyl-2-Pentanone 1 01/24/24 23:23 V42935ENM 1.67 J µg/m3 0.488 1.74Methylene Chloride 1 01/24/24 23:23 V42935ENM <0.183 µg/m3 0.183 2.62Naphthalene 1 01/24/24 23:23 V42935ENM Qualifiers/ Definitions Dilution FactorDFAnalyte detected in blankB Method Quantitation LimitMQLEstimated valueJ Page 21 of 66 , REPORT OF ANALYSISReport Number : Project Information : NC 28203 24-019-0015 01102 Hart & Hickman (Charlotte) 2923 South Tryon St. Ste 100 Matt Vawter Charlotte Received : 01/19/2024 PAM.003 Report Date : 01/31/2024 Sample ID : Lab No : Sampled:IAS-1 (UDM) 94748 Matrix: 1/18/2024 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):01/24/24 09:00 V42983 01/30/24 07:00 <0.242 µg/m3 0.242 0.860Propene 1 01/24/24 23:23 V42935ENM <0.124 µg/m3 0.124 2.13Styrene 1 01/24/24 23:23 V42935ENM 1.19 J µg/m3 0.181 3.39 1 01/24/24 23:23 V42935ENM 0.763 J µg/m3 0.107 1.47 1 01/24/24 23:23 V42935ENM 2.14 µg/m3 0.090 1.88 1 01/24/24 23:23 V42935ENM <0.199 µg/m3 0.199 2.15 1 01/24/24 23:23 V42935ENM 1.63 J µg/m3 0.130 2.81 1 01/24/24 23:23 V42935ENM 0.683 J µg/m3 0.110 2.461,2,4-Trimethylbenzene 1 01/24/24 23:23 V42935ENM <0.236 µg/m3 0.236 2.461,3,5-Trimethylbenzene 1 01/24/24 23:23 V42935ENM 1.05 J µg/m3 0.157 2.17o-Xylene 1 01/24/24 23:23 V42935ENM 3.30 J µg/m3 0.217 5.65m,p-Xylene 1 01/24/24 23:23 V42935ENM Surrogate: 4-Bromofluorobenzene Surrogate: 4-Bromofluorobenzene Surrogate: 4-Bromofluorobenzene Qualifiers/ Definitions Dilution FactorDFAnalyte detected in blankB Method Quantitation LimitMQLEstimated valueJ Page 22 of 66 , REPORT OF ANALYSISReport Number : Project Information : NC 28203 24-019-0015 01102 Hart & Hickman (Charlotte) 2923 South Tryon St. Ste 100 Matt Vawter Charlotte Received : 01/19/2024 PAM.003 Report Date : 01/31/2024 Sample ID : Lab No : Sampled:IAS-3 94749 Matrix: 1/18/2024 8:31 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):01/25/24 09:00 V42983 01/30/24 07:00 10.6 B µg/m3 0.202 4.75Acetone 1 01/25/24 20:42 V42931ENM 1.09 J µg/m3 0.073 1.60Benzene 1 01/25/24 20:42 V42931ENM 0.579 J µg/m3 0.060 6.23Carbon Disulfide 1 01/25/24 20:42 V42931ENM <0.155 µg/m3 0.155 3.15Carbon Tetrachloride 1 01/25/24 20:42 V42931ENM 1.62 J µg/m3 0.086 2.44Chloroform 1 01/25/24 20:42 V42931ENM 0.852 J µg/m3 0.067 1.03Chloromethane 1 01/25/24 20:42 V42931ENM <0.161 µg/m3 0.161 3.44Cyclohexane 1 01/25/24 20:42 V42931ENM <0.096 µg/m3 0.096 3.011,2-Dichlorobenzene 1 01/25/24 20:42 V42931ENM <0.186 µg/m3 0.186 3.011,4-Dichlorobenzene 1 01/25/24 20:42 V42931ENM 2.84 µg/m3 0.134 2.47Dichlorodifluoromethane 1 01/25/24 20:42 V42931ENM <0.095 µg/m3 0.095 1.98cis-1,2-Dichloroethene 1 01/25/24 20:42 V42931ENM 236 µg/m3 3.38 100Ethanol 20 01/30/24 19:46 V42985ENM 0.451 J µg/m3 0.106 2.17Ethylbenzene 1 01/25/24 20:42 V42931ENM 0.511 J µg/m3 0.128 2.464-Ethyltoluene 1 01/25/24 20:42 V42931ENM 0.557 J µg/m3 0.143 2.05Heptane 1 01/25/24 20:42 V42931ENM 0.870 J µg/m3 0.047 1.76n-Hexane 1 01/25/24 20:42 V42931ENM <0.285 µg/m3 0.285 2.052-Hexanone 1 01/25/24 20:42 V42931ENM 54.4 µg/m3 0.139 4.92Isopropyl Alcohol 1 01/25/24 20:42 V42931ENM 1.15 J µg/m3 0.224 1.47Methyl Ethyl Ketone (MEK)1 01/25/24 20:42 V42931ENM <0.121 µg/m3 0.121 2.054-Methyl-2-Pentanone 1 01/25/24 20:42 V42931ENM 1.82 µg/m3 0.488 1.74Methylene Chloride 1 01/25/24 20:42 V42931ENM <0.183 µg/m3 0.183 2.62Naphthalene 1 01/25/24 20:42 V42931ENM Qualifiers/ Definitions Dilution FactorDFAnalyte detected in blankB Method Quantitation LimitMQLEstimated valueJ Page 23 of 66 , REPORT OF ANALYSISReport Number : Project Information : NC 28203 24-019-0015 01102 Hart & Hickman (Charlotte) 2923 South Tryon St. Ste 100 Matt Vawter Charlotte Received : 01/19/2024 PAM.003 Report Date : 01/31/2024 Sample ID : Lab No : Sampled:IAS-3 94749 Matrix: 1/18/2024 8:31 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):01/25/24 09:00 V42983 01/30/24 07:00 <0.242 µg/m3 0.242 0.860Propene 1 01/25/24 20:42 V42931ENM 0.383 J µg/m3 0.124 2.13Styrene 1 01/25/24 20:42 V42931ENM 1.18 J µg/m3 0.181 3.39 1 01/25/24 20:42 V42931ENM 0.271 J µg/m3 0.107 1.47 1 01/25/24 20:42 V42931ENM 2.69 µg/m3 0.090 1.88 1 01/25/24 20:42 V42931ENM <0.199 µg/m3 0.199 2.15 1 01/25/24 20:42 V42931ENM 1.71 J µg/m3 0.130 2.81 1 01/25/24 20:42 V42931ENM 3.68 µg/m3 0.110 2.461,2,4-Trimethylbenzene 1 01/25/24 20:42 V42931ENM 1.17 J µg/m3 0.236 2.461,3,5-Trimethylbenzene 1 01/25/24 20:42 V42931ENM 0.521 J µg/m3 0.157 2.17o-Xylene 1 01/25/24 20:42 V42931ENM 1.23 J µg/m3 0.217 5.65m,p-Xylene 1 01/25/24 20:42 V42931ENM Surrogate: 4-Bromofluorobenzene Surrogate: 4-Bromofluorobenzene Surrogate: 4-Bromofluorobenzene Qualifiers/ Definitions Dilution FactorDFAnalyte detected in blankB Method Quantitation LimitMQLEstimated valueJ Page 24 of 66 , REPORT OF ANALYSISReport Number : Project Information : NC 28203 24-019-0015 01102 Hart & Hickman (Charlotte) 2923 South Tryon St. Ste 100 Matt Vawter Charlotte Received : 01/19/2024 PAM.003 Report Date : 01/31/2024 Sample ID : Lab No : Sampled:IAS-2 94750 Matrix: 1/18/2024 8:39 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):01/25/24 09:00 V42983 01/30/24 07:00 16.4 µg/m3 0.202 4.75Acetone 1 01/25/24 21:34 V42931ENM 2.26 µg/m3 0.073 1.60Benzene 1 01/25/24 21:34 V42931ENM 0.666 J µg/m3 0.060 6.23Carbon Disulfide 1 01/25/24 21:34 V42931ENM <0.155 µg/m3 0.155 3.15Carbon Tetrachloride 1 01/25/24 21:34 V42931ENM 18.8 µg/m3 0.086 2.44Chloroform 1 01/25/24 21:34 V42931ENM 0.900 J µg/m3 0.067 1.03Chloromethane 1 01/25/24 21:34 V42931ENM <0.161 µg/m3 0.161 3.44Cyclohexane 1 01/25/24 21:34 V42931ENM <0.096 µg/m3 0.096 3.011,2-Dichlorobenzene 1 01/25/24 21:34 V42931ENM <0.186 µg/m3 0.186 3.011,4-Dichlorobenzene 1 01/25/24 21:34 V42931ENM 2.84 µg/m3 0.134 2.47Dichlorodifluoromethane 1 01/25/24 21:34 V42931ENM <0.095 µg/m3 0.095 1.98cis-1,2-Dichloroethene 1 01/25/24 21:34 V42931ENM 1230 µg/m3 3.38 100Ethanol 20 01/30/24 20:23 V42985ENM 0.638 J µg/m3 0.106 2.17Ethylbenzene 1 01/25/24 21:34 V42931ENM 0.486 J µg/m3 0.128 2.464-Ethyltoluene 1 01/25/24 21:34 V42931ENM 1.06 J µg/m3 0.143 2.05Heptane 1 01/25/24 21:34 V42931ENM 0.909 J µg/m3 0.047 1.76n-Hexane 1 01/25/24 21:34 V42931ENM <0.285 µg/m3 0.285 2.052-Hexanone 1 01/25/24 21:34 V42931ENM 44.0 µg/m3 0.139 4.92Isopropyl Alcohol 1 01/25/24 21:34 V42931ENM 2.00 µg/m3 0.224 1.47Methyl Ethyl Ketone (MEK)1 01/25/24 21:34 V42931ENM <0.121 µg/m3 0.121 2.054-Methyl-2-Pentanone 1 01/25/24 21:34 V42931ENM 2.07 µg/m3 0.488 1.74Methylene Chloride 1 01/25/24 21:34 V42931ENM <0.183 µg/m3 0.183 2.62Naphthalene 1 01/25/24 21:34 V42931ENM Qualifiers/ Definitions Dilution FactorDFAnalyte detected in blankB Method Quantitation LimitMQLEstimated valueJ Page 25 of 66 , REPORT OF ANALYSISReport Number : Project Information : NC 28203 24-019-0015 01102 Hart & Hickman (Charlotte) 2923 South Tryon St. Ste 100 Matt Vawter Charlotte Received : 01/19/2024 PAM.003 Report Date : 01/31/2024 Sample ID : Lab No : Sampled:IAS-2 94750 Matrix: 1/18/2024 8:39 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):01/25/24 09:00 V42983 01/30/24 07:00 <0.242 µg/m3 0.242 0.860Propene 1 01/25/24 21:34 V42931ENM 0.724 J µg/m3 0.124 2.13Styrene 1 01/25/24 21:34 V42931ENM 0.698 J µg/m3 0.181 3.39 1 01/25/24 21:34 V42931ENM 0.480 J µg/m3 0.107 1.47 1 01/25/24 21:34 V42931ENM 2.90 µg/m3 0.090 1.88 1 01/25/24 21:34 V42931ENM <0.199 µg/m3 0.199 2.15 1 01/25/24 21:34 V42931ENM 1.86 J µg/m3 0.130 2.81 1 01/25/24 21:34 V42931ENM 3.98 µg/m3 0.110 2.461,2,4-Trimethylbenzene 1 01/25/24 21:34 V42931ENM 1.32 J µg/m3 0.236 2.461,3,5-Trimethylbenzene 1 01/25/24 21:34 V42931ENM 0.833 J µg/m3 0.157 2.17o-Xylene 1 01/25/24 21:34 V42931ENM 2.33 J µg/m3 0.217 5.65m,p-Xylene 1 01/25/24 21:34 V42931ENM Surrogate: 4-Bromofluorobenzene Surrogate: 4-Bromofluorobenzene Surrogate: 4-Bromofluorobenzene Qualifiers/ Definitions Dilution FactorDFAnalyte detected in blankB Method Quantitation LimitMQLEstimated valueJ Page 26 of 66 , REPORT OF ANALYSISReport Number : Project Information : NC 28203 24-019-0015 01102 Hart & Hickman (Charlotte) 2923 South Tryon St. Ste 100 Matt Vawter Charlotte Received : 01/19/2024 PAM.003 Report Date : 01/31/2024 Sample ID : Lab No : Sampled:IAS-OFF-2 94751 Matrix: 1/18/2024 8:50 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):01/25/24 09:00 V42983 01/30/24 07:00 53.1 µg/m3 0.202 4.75Acetone 1 01/25/24 22:22 V42931ENM 1.33 J µg/m3 0.073 1.60Benzene 1 01/25/24 22:22 V42931ENM 1.09 J µg/m3 0.060 6.23Carbon Disulfide 1 01/25/24 22:22 V42931ENM <0.155 µg/m3 0.155 3.15Carbon Tetrachloride 1 01/25/24 22:22 V42931ENM <0.086 µg/m3 0.086 2.44Chloroform 1 01/25/24 22:22 V42931ENM 0.825 J µg/m3 0.067 1.03Chloromethane 1 01/25/24 22:22 V42931ENM 6.04 µg/m3 0.161 3.44Cyclohexane 1 01/25/24 22:22 V42931ENM <0.096 µg/m3 0.096 3.011,2-Dichlorobenzene 1 01/25/24 22:22 V42931ENM <0.186 µg/m3 0.186 3.011,4-Dichlorobenzene 1 01/25/24 22:22 V42931ENM 2.86 µg/m3 0.134 2.47Dichlorodifluoromethane 1 01/25/24 22:22 V42931ENM <0.095 µg/m3 0.095 1.98cis-1,2-Dichloroethene 1 01/25/24 22:22 V42931ENM 206 µg/m3 3.38 100Ethanol 20 01/30/24 21:00 V42985ENM 1.21 J µg/m3 0.106 2.17Ethylbenzene 1 01/25/24 22:22 V42931ENM 2.83 µg/m3 0.128 2.464-Ethyltoluene 1 01/25/24 22:22 V42931ENM 4.54 µg/m3 0.143 2.05Heptane 1 01/25/24 22:22 V42931ENM 0.905 J µg/m3 0.047 1.76n-Hexane 1 01/25/24 22:22 V42931ENM <0.285 µg/m3 0.285 2.052-Hexanone 1 01/25/24 22:22 V42931ENM 31.2 µg/m3 0.139 4.92Isopropyl Alcohol 1 01/25/24 22:22 V42931ENM 4.14 µg/m3 0.224 1.47Methyl Ethyl Ketone (MEK)1 01/25/24 22:22 V42931ENM 2.83 µg/m3 0.121 2.054-Methyl-2-Pentanone 1 01/25/24 22:22 V42931ENM 1.98 µg/m3 0.488 1.74Methylene Chloride 1 01/25/24 22:22 V42931ENM 4.70 µg/m3 0.183 2.62Naphthalene 1 01/25/24 22:22 V42931ENM Qualifiers/ Definitions Dilution FactorDFAnalyte detected in blankB Method Quantitation LimitMQLEstimated valueJ Page 27 of 66 , REPORT OF ANALYSISReport Number : Project Information : NC 28203 24-019-0015 01102 Hart & Hickman (Charlotte) 2923 South Tryon St. Ste 100 Matt Vawter Charlotte Received : 01/19/2024 PAM.003 Report Date : 01/31/2024 Sample ID : Lab No : Sampled:IAS-OFF-2 94751 Matrix: 1/18/2024 8:50 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):01/25/24 09:00 V42983 01/30/24 07:00 <0.242 µg/m3 0.242 0.860Propene 1 01/25/24 22:22 V42931ENM 0.894 J µg/m3 0.124 2.13Styrene 1 01/25/24 22:22 V42931ENM 0.813 J µg/m3 0.181 3.39 1 01/25/24 22:22 V42931ENM 2.15 µg/m3 0.107 1.47 1 01/25/24 22:22 V42931ENM 6.76 µg/m3 0.090 1.88 1 01/25/24 22:22 V42931ENM <0.199 µg/m3 0.199 2.15 1 01/25/24 22:22 V42931ENM 1.66 J µg/m3 0.130 2.81 1 01/25/24 22:22 V42931ENM 8.62 µg/m3 0.110 2.461,2,4-Trimethylbenzene 1 01/25/24 22:22 V42931ENM 2.30 J µg/m3 0.236 2.461,3,5-Trimethylbenzene 1 01/25/24 22:22 V42931ENM 1.80 J µg/m3 0.157 2.17o-Xylene 1 01/25/24 22:22 V42931ENM 5.41 J µg/m3 0.217 5.65m,p-Xylene 1 01/25/24 22:22 V42931ENM Surrogate: 4-Bromofluorobenzene Surrogate: 4-Bromofluorobenzene Surrogate: 4-Bromofluorobenzene Qualifiers/ Definitions Dilution FactorDFAnalyte detected in blankB Method Quantitation LimitMQLEstimated valueJ Page 28 of 66 , REPORT OF ANALYSISReport Number : Project Information : NC 28203 24-019-0015 01102 Hart & Hickman (Charlotte) 2923 South Tryon St. Ste 100 Matt Vawter Charlotte Received : 01/19/2024 PAM.003 Report Date : 01/31/2024 Sample ID : Lab No : Sampled:IAS-1 94752 Matrix: 1/18/2024 8:24 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):01/25/24 09:00 V42983 01/30/24 07:00 10.9 µg/m3 0.202 4.75Acetone 1 01/25/24 23:10 V42931ENM 0.916 J µg/m3 0.073 1.60Benzene 1 01/25/24 23:10 V42931ENM 0.538 J µg/m3 0.060 6.23Carbon Disulfide 1 01/25/24 23:10 V42931ENM <0.155 µg/m3 0.155 3.15Carbon Tetrachloride 1 01/25/24 23:10 V42931ENM 1.27 J µg/m3 0.086 2.44Chloroform 1 01/25/24 23:10 V42931ENM 0.885 J µg/m3 0.067 1.03Chloromethane 1 01/25/24 23:10 V42931ENM <0.161 µg/m3 0.161 3.44Cyclohexane 1 01/25/24 23:10 V42931ENM <0.096 µg/m3 0.096 3.011,2-Dichlorobenzene 1 01/25/24 23:10 V42931ENM <0.186 µg/m3 0.186 3.011,4-Dichlorobenzene 1 01/25/24 23:10 V42931ENM 2.76 µg/m3 0.134 2.47Dichlorodifluoromethane 1 01/25/24 23:10 V42931ENM <0.095 µg/m3 0.095 1.98cis-1,2-Dichloroethene 1 01/25/24 23:10 V42931ENM 169 µg/m3 3.38 100Ethanol 20 01/30/24 21:36 V42985ENM 0.777 J µg/m3 0.106 2.17Ethylbenzene 1 01/25/24 23:10 V42931ENM 0.545 J µg/m3 0.128 2.464-Ethyltoluene 1 01/25/24 23:10 V42931ENM 0.495 J µg/m3 0.143 2.05Heptane 1 01/25/24 23:10 V42931ENM 0.666 J µg/m3 0.047 1.76n-Hexane 1 01/25/24 23:10 V42931ENM <0.285 µg/m3 0.285 2.052-Hexanone 1 01/25/24 23:10 V42931ENM 26.8 µg/m3 0.139 4.92Isopropyl Alcohol 1 01/25/24 23:10 V42931ENM 1.19 J µg/m3 0.224 1.47Methyl Ethyl Ketone (MEK)1 01/25/24 23:10 V42931ENM <0.121 µg/m3 0.121 2.054-Methyl-2-Pentanone 1 01/25/24 23:10 V42931ENM 1.40 J µg/m3 0.488 1.74Methylene Chloride 1 01/25/24 23:10 V42931ENM <0.183 µg/m3 0.183 2.62Naphthalene 1 01/25/24 23:10 V42931ENM Qualifiers/ Definitions Dilution FactorDFAnalyte detected in blankB Method Quantitation LimitMQLEstimated valueJ Page 29 of 66 , REPORT OF ANALYSISReport Number : Project Information : NC 28203 24-019-0015 01102 Hart & Hickman (Charlotte) 2923 South Tryon St. Ste 100 Matt Vawter Charlotte Received : 01/19/2024 PAM.003 Report Date : 01/31/2024 Sample ID : Lab No : Sampled:IAS-1 94752 Matrix: 1/18/2024 8:24 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):01/25/24 09:00 V42983 01/30/24 07:00 <0.242 µg/m3 0.242 0.860Propene 1 01/25/24 23:10 V42931ENM 0.438 J µg/m3 0.124 2.13Styrene 1 01/25/24 23:10 V42931ENM 1.57 J µg/m3 0.181 3.39 1 01/25/24 23:10 V42931ENM 0.327 J µg/m3 0.107 1.47 1 01/25/24 23:10 V42931ENM 1.91 µg/m3 0.090 1.88 1 01/25/24 23:10 V42931ENM <0.199 µg/m3 0.199 2.15 1 01/25/24 23:10 V42931ENM 1.69 J µg/m3 0.130 2.81 1 01/25/24 23:10 V42931ENM 3.47 µg/m3 0.110 2.461,2,4-Trimethylbenzene 1 01/25/24 23:10 V42931ENM 1.08 J µg/m3 0.236 2.461,3,5-Trimethylbenzene 1 01/25/24 23:10 V42931ENM 1.04 J µg/m3 0.157 2.17o-Xylene 1 01/25/24 23:10 V42931ENM 3.26 J µg/m3 0.217 5.65m,p-Xylene 1 01/25/24 23:10 V42931ENM Surrogate: 4-Bromofluorobenzene Surrogate: 4-Bromofluorobenzene Surrogate: 4-Bromofluorobenzene Qualifiers/ Definitions Dilution FactorDFAnalyte detected in blankB Method Quantitation LimitMQLEstimated valueJ Page 30 of 66 , REPORT OF ANALYSISReport Number : Project Information : NC 28203 24-019-0015 01102 Hart & Hickman (Charlotte) 2923 South Tryon St. Ste 100 Matt Vawter Charlotte Received : 01/19/2024 PAM.003 Report Date : 01/31/2024 Sample ID : Lab No : Sampled:IAS-3 (UDM) 94753 Matrix: 1/18/2024 10:06 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):01/25/24 09:00 V42983 01/30/24 07:00 12.9 µg/m3 0.202 4.75Acetone 1 01/26/24 00:01 V42931ENM 0.865 J µg/m3 0.073 1.60Benzene 1 01/26/24 00:01 V42931ENM 0.974 J µg/m3 0.060 6.23Carbon Disulfide 1 01/26/24 00:01 V42931ENM <0.155 µg/m3 0.155 3.15Carbon Tetrachloride 1 01/26/24 00:01 V42931ENM 1.36 J µg/m3 0.086 2.44Chloroform 1 01/26/24 00:01 V42931ENM 0.813 J µg/m3 0.067 1.03Chloromethane 1 01/26/24 00:01 V42931ENM <0.161 µg/m3 0.161 3.44Cyclohexane 1 01/26/24 00:01 V42931ENM <0.096 µg/m3 0.096 3.011,2-Dichlorobenzene 1 01/26/24 00:01 V42931ENM <0.186 µg/m3 0.186 3.011,4-Dichlorobenzene 1 01/26/24 00:01 V42931ENM 2.76 µg/m3 0.134 2.47Dichlorodifluoromethane 1 01/26/24 00:01 V42931ENM <0.095 µg/m3 0.095 1.98cis-1,2-Dichloroethene 1 01/26/24 00:01 V42931ENM 353 µg/m3 3.38 100Ethanol 20 01/30/24 22:13 V42985ENM 0.373 J µg/m3 0.106 2.17Ethylbenzene 1 01/26/24 00:01 V42931ENM <0.128 µg/m3 0.128 2.464-Ethyltoluene 1 01/26/24 00:01 V42931ENM 0.922 J µg/m3 0.143 2.05Heptane 1 01/26/24 00:01 V42931ENM 0.637 J µg/m3 0.047 1.76n-Hexane 1 01/26/24 00:01 V42931ENM <0.285 µg/m3 0.285 2.052-Hexanone 1 01/26/24 00:01 V42931ENM 10.1 B µg/m3 0.139 4.92Isopropyl Alcohol 1 01/26/24 00:01 V42931ENM 1.55 µg/m3 0.224 1.47Methyl Ethyl Ketone (MEK)1 01/26/24 00:01 V42931ENM <0.121 µg/m3 0.121 2.054-Methyl-2-Pentanone 1 01/26/24 00:01 V42931ENM 1.59 J µg/m3 0.488 1.74Methylene Chloride 1 01/26/24 00:01 V42931ENM <0.183 µg/m3 0.183 2.62Naphthalene 1 01/26/24 00:01 V42931ENM Qualifiers/ Definitions Dilution FactorDFAnalyte detected in blankB Method Quantitation LimitMQLEstimated valueJ Page 31 of 66 , REPORT OF ANALYSISReport Number : Project Information : NC 28203 24-019-0015 01102 Hart & Hickman (Charlotte) 2923 South Tryon St. Ste 100 Matt Vawter Charlotte Received : 01/19/2024 PAM.003 Report Date : 01/31/2024 Sample ID : Lab No : Sampled:IAS-3 (UDM) 94753 Matrix: 1/18/2024 10:06 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):01/25/24 09:00 V42983 01/30/24 07:00 <0.242 µg/m3 0.242 0.860Propene 1 01/26/24 00:01 V42931ENM <0.124 µg/m3 0.124 2.13Styrene 1 01/26/24 00:01 V42931ENM 2.12 J µg/m3 0.181 3.39 1 01/26/24 00:01 V42931ENM 0.917 J µg/m3 0.107 1.47 1 01/26/24 00:01 V42931ENM 2.65 µg/m3 0.090 1.88 1 01/26/24 00:01 V42931ENM <0.199 µg/m3 0.199 2.15 1 01/26/24 00:01 V42931ENM 1.62 J µg/m3 0.130 2.81 1 01/26/24 00:01 V42931ENM 1.25 J µg/m3 0.110 2.461,2,4-Trimethylbenzene 1 01/26/24 00:01 V42931ENM 0.447 J µg/m3 0.236 2.461,3,5-Trimethylbenzene 1 01/26/24 00:01 V42931ENM 0.455 J µg/m3 0.157 2.17o-Xylene 1 01/26/24 00:01 V42931ENM 1.20 J µg/m3 0.217 5.65m,p-Xylene 1 01/26/24 00:01 V42931ENM Surrogate: 4-Bromofluorobenzene Surrogate: 4-Bromofluorobenzene Surrogate: 4-Bromofluorobenzene Qualifiers/ Definitions Dilution FactorDFAnalyte detected in blankB Method Quantitation LimitMQLEstimated valueJ Page 32 of 66 , REPORT OF ANALYSISReport Number : Project Information : NC 28203 24-019-0015 01102 Hart & Hickman (Charlotte) 2923 South Tryon St. Ste 100 Matt Vawter Charlotte Received : 01/19/2024 PAM.003 Report Date : 01/31/2024 Sample ID : Lab No : Sampled:IAS-2 (UDM) 94754 Matrix: 1/18/2024 9:58 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):01/25/24 09:00 5.92 B µg/m3 0.202 4.75Acetone 1 01/26/24 00:48 V42931ENM 0.721 J µg/m3 0.073 1.60Benzene 1 01/26/24 00:48 V42931ENM 1.05 J µg/m3 0.060 6.23Carbon Disulfide 1 01/26/24 00:48 V42931ENM <0.155 µg/m3 0.155 3.15Carbon Tetrachloride 1 01/26/24 00:48 V42931ENM 0.624 J µg/m3 0.086 2.44Chloroform 1 01/26/24 00:48 V42931ENM 0.877 J µg/m3 0.067 1.03Chloromethane 1 01/26/24 00:48 V42931ENM <0.161 µg/m3 0.161 3.44Cyclohexane 1 01/26/24 00:48 V42931ENM <0.096 µg/m3 0.096 3.011,2-Dichlorobenzene 1 01/26/24 00:48 V42931ENM <0.186 µg/m3 0.186 3.011,4-Dichlorobenzene 1 01/26/24 00:48 V42931ENM 2.77 µg/m3 0.134 2.47Dichlorodifluoromethane 1 01/26/24 00:48 V42931ENM <0.095 µg/m3 0.095 1.98cis-1,2-Dichloroethene 1 01/26/24 00:48 V42931ENM 12.9 µg/m3 0.169 5.00Ethanol 1 01/26/24 00:48 V42931ENM <0.106 µg/m3 0.106 2.17Ethylbenzene 1 01/26/24 00:48 V42931ENM <0.128 µg/m3 0.128 2.464-Ethyltoluene 1 01/26/24 00:48 V42931ENM 0.360 J µg/m3 0.143 2.05Heptane 1 01/26/24 00:48 V42931ENM 0.475 J µg/m3 0.047 1.76n-Hexane 1 01/26/24 00:48 V42931ENM <0.285 µg/m3 0.285 2.052-Hexanone 1 01/26/24 00:48 V42931ENM 3.44 JB µg/m3 0.139 4.92Isopropyl Alcohol 1 01/26/24 00:48 V42931ENM 0.961 J µg/m3 0.224 1.47Methyl Ethyl Ketone (MEK)1 01/26/24 00:48 V42931ENM <0.121 µg/m3 0.121 2.054-Methyl-2-Pentanone 1 01/26/24 00:48 V42931ENM 1.42 J µg/m3 0.488 1.74Methylene Chloride 1 01/26/24 00:48 V42931ENM <0.183 µg/m3 0.183 2.62Naphthalene 1 01/26/24 00:48 V42931ENM Qualifiers/ Definitions Dilution FactorDFAnalyte detected in blankB Method Quantitation LimitMQLEstimated valueJ Page 33 of 66 , REPORT OF ANALYSISReport Number : Project Information : NC 28203 24-019-0015 01102 Hart & Hickman (Charlotte) 2923 South Tryon St. Ste 100 Matt Vawter Charlotte Received : 01/19/2024 PAM.003 Report Date : 01/31/2024 Sample ID : Lab No : Sampled:IAS-2 (UDM) 94754 Matrix: 1/18/2024 9:58 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):01/25/24 09:00 <0.242 µg/m3 0.242 0.860Propene 1 01/26/24 00:48 V42931ENM <0.124 µg/m3 0.124 2.13Styrene 1 01/26/24 00:48 V42931ENM <0.181 µg/m3 0.181 3.39 1 01/26/24 00:48 V42931ENM 0.645 J µg/m3 0.107 1.47 1 01/26/24 00:48 V42931ENM 1.46 J µg/m3 0.090 1.88 1 01/26/24 00:48 V42931ENM <0.199 µg/m3 0.199 2.15 1 01/26/24 00:48 V42931ENM 1.55 J µg/m3 0.130 2.81 1 01/26/24 00:48 V42931ENM <0.110 µg/m3 0.110 2.461,2,4-Trimethylbenzene 1 01/26/24 00:48 V42931ENM <0.236 µg/m3 0.236 2.461,3,5-Trimethylbenzene 1 01/26/24 00:48 V42931ENM 0.308 J µg/m3 0.157 2.17o-Xylene 1 01/26/24 00:48 V42931ENM 0.746 J µg/m3 0.217 5.65m,p-Xylene 1 01/26/24 00:48 V42931ENM Surrogate: 4-Bromofluorobenzene Surrogate: 4-Bromofluorobenzene Qualifiers/ Definitions Dilution FactorDFAnalyte detected in blankB Method Quantitation LimitMQLEstimated valueJ Page 34 of 66 , REPORT OF ANALYSISReport Number : Project Information : NC 28203 24-019-0015 01102 Hart & Hickman (Charlotte) 2923 South Tryon St. Ste 100 Matt Vawter Charlotte Received : 01/19/2024 PAM.003 Report Date : 01/31/2024 Sample ID : Lab No : Sampled:IAS-BKG 94755 Matrix: 1/18/2024 9:21 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):01/25/24 09:00 8.25 B µg/m3 0.202 4.75Acetone 1 01/26/24 01:36 V42813ENM 0.888 J µg/m3 0.073 1.60Benzene 1 01/26/24 01:36 V42813ENM <0.147 µg/m3 0.147 10.4Benzyl Chloride 1 01/26/24 01:36 V42813ENM <0.150 µg/m3 0.150 3.35Bromodichloromethane 1 01/26/24 01:36 V42813ENM <0.153 µg/m3 0.153 5.17Bromoform 1 01/26/24 01:36 V42813ENM <0.115 µg/m3 0.115 1.94Bromomethane 1 01/26/24 01:36 V42813ENM <0.328 µg/m3 0.328 1.111,3-Butadiene 1 01/26/24 01:36 V42813ENM 0.890 J µg/m3 0.060 6.23Carbon Disulfide 1 01/26/24 01:36 V42813ENM <0.155 µg/m3 0.155 3.15Carbon Tetrachloride 1 01/26/24 01:36 V42813ENM <0.107 µg/m3 0.107 2.30Chlorobenzene 1 01/26/24 01:36 V42813ENM <0.208 µg/m3 0.208 4.26Chlorodibromomethane 1 01/26/24 01:36 V42813ENM <0.164 µg/m3 0.164 1.32Chloroethane 1 01/26/24 01:36 V42813ENM <0.086 µg/m3 0.086 2.44Chloroform 1 01/26/24 01:36 V42813ENM 0.836 J µg/m3 0.067 1.03Chloromethane 1 01/26/24 01:36 V42813ENM <0.161 µg/m3 0.161 3.44Cyclohexane 1 01/26/24 01:36 V42813ENM <0.151 µg/m3 0.151 3.841,2-Dibromoethane 1 01/26/24 01:36 V42813ENM <0.096 µg/m3 0.096 3.011,2-Dichlorobenzene 1 01/26/24 01:36 V42813ENM <0.174 µg/m3 0.174 12.01,3-Dichlorobenzene 1 01/26/24 01:36 V42813ENM <0.186 µg/m3 0.186 3.011,4-Dichlorobenzene 1 01/26/24 01:36 V42813ENM 2.80 µg/m3 0.134 2.47Dichlorodifluoromethane 1 01/26/24 01:36 V42813ENM <0.101 µg/m3 0.101 2.021,1-Dichloroethane 1 01/26/24 01:36 V42813ENM <0.129 µg/m3 0.129 2.021,2-Dichloroethane 1 01/26/24 01:36 V42813ENM Qualifiers/ Definitions Dilution FactorDFAnalyte detected in blankB Method Quantitation LimitMQLEstimated valueJ Page 35 of 66 , REPORT OF ANALYSISReport Number : Project Information : NC 28203 24-019-0015 01102 Hart & Hickman (Charlotte) 2923 South Tryon St. Ste 100 Matt Vawter Charlotte Received : 01/19/2024 PAM.003 Report Date : 01/31/2024 Sample ID : Lab No : Sampled:IAS-BKG 94755 Matrix: 1/18/2024 9:21 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):01/25/24 09:00 <0.107 µg/m3 0.107 1.981,1-Dichloroethene 1 01/26/24 01:36 V42813ENM <0.095 µg/m3 0.095 1.98cis-1,2-Dichloroethene 1 01/26/24 01:36 V42813ENM <0.108 µg/m3 0.108 1.98trans-1,2-Dichloroethene 1 01/26/24 01:36 V42813ENM <0.205 µg/m3 0.205 2.311,2-Dichloropropane 1 01/26/24 01:36 V42813ENM <0.622 µg/m3 0.622 3.501,2-Dichlorotetrafluoroethane 1 01/26/24 01:36 V42813ENM <0.178 µg/m3 0.178 2.27cis-1,3-Dichloropropene 1 01/26/24 01:36 V42813ENM <0.178 µg/m3 0.178 2.27trans-1,3-Dichloropropene 1 01/26/24 01:36 V42813ENM <0.435 µg/m3 0.435 1.801,4-Dioxane 1 01/26/24 01:36 V42813ENM <0.136 µg/m3 0.136 1.80Ethyl Acetate 1 01/26/24 01:36 V42813ENM 0.343 J µg/m3 0.106 2.17Ethylbenzene 1 01/26/24 01:36 V42813ENM <0.128 µg/m3 0.128 2.464-Ethyltoluene 1 01/26/24 01:36 V42813ENM 0.605 J µg/m3 0.561 3.831,1,2-Trichloro-1,2,2-trifluoroethane 1 01/26/24 01:36 V42813ENM 0.454 J µg/m3 0.143 2.05Heptane 1 01/26/24 01:36 V42813ENM <0.330 µg/m3 0.330 5.33Hexachlorobutadiene 1 01/26/24 01:36 V42813ENM 0.609 J µg/m3 0.047 1.76n-Hexane 1 01/26/24 01:36 V42813ENM <0.285 µg/m3 0.285 2.052-Hexanone 1 01/26/24 01:36 V42813ENM 3.13 JB µg/m3 0.139 4.92Isopropyl Alcohol 1 01/26/24 01:36 V42813ENM 2.90 µg/m3 0.224 1.47Methyl Ethyl Ketone (MEK)1 01/26/24 01:36 V42813ENM <0.033 µg/m3 0.033 1.80Methyl tert-butyl ether (MTBE)1 01/26/24 01:36 V42813ENM <0.121 µg/m3 0.121 2.054-Methyl-2-Pentanone 1 01/26/24 01:36 V42813ENM 1.23 J µg/m3 0.488 1.74Methylene Chloride 1 01/26/24 01:36 V42813ENM <0.183 µg/m3 0.183 2.62Naphthalene 1 01/26/24 01:36 V42813ENM Qualifiers/ Definitions Dilution FactorDFAnalyte detected in blankB Method Quantitation LimitMQLEstimated valueJ Page 36 of 66 , REPORT OF ANALYSISReport Number : Project Information : NC 28203 24-019-0015 01102 Hart & Hickman (Charlotte) 2923 South Tryon St. Ste 100 Matt Vawter Charlotte Received : 01/19/2024 PAM.003 Report Date : 01/31/2024 Sample ID : Lab No : Sampled:IAS-BKG 94755 Matrix: 1/18/2024 9:21 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):01/25/24 09:00 <0.242 µg/m3 0.242 0.860Propene 1 01/26/24 01:36 V42813ENM <0.124 µg/m3 0.124 2.13Styrene 1 01/26/24 01:36 V42813ENM <0.104 µg/m3 0.104 3.431,1,2,2-Tetrachloroethane 1 01/26/24 01:36 V42813ENM <0.181 µg/m3 0.181 3.39 1 01/26/24 01:36 V42813ENM 2.83 µg/m3 0.107 1.47 1 01/26/24 01:36 V42813ENM 2.08 µg/m3 0.090 1.88 1 01/26/24 01:36 V42813ENM <0.209 µg/m3 0.209 3.711,2,4-Trichlorobenzene 1 01/26/24 01:36 V42813ENM <0.144 µg/m3 0.144 2.731,1,1-Trichloroethane 1 01/26/24 01:36 V42813ENM <0.087 µg/m3 0.087 2.731,1,2-Trichloroethane 1 01/26/24 01:36 V42813ENM 1.02 J µg/m3 0.199 2.15 1 01/26/24 01:36 V42813ENM 1.64 J µg/m3 0.130 2.81 1 01/26/24 01:36 V42813ENM <0.110 µg/m3 0.110 2.461,2,4-Trimethylbenzene 1 01/26/24 01:36 V42813ENM <0.236 µg/m3 0.236 2.461,3,5-Trimethylbenzene 1 01/26/24 01:36 V42813ENM <0.224 µg/m3 0.224 1.76Vinyl Acetate 1 01/26/24 01:36 V42813ENM <0.127 µg/m3 0.127 1.28Vinyl Chloride 1 01/26/24 01:36 V42813ENM 0.351 J µg/m3 0.157 2.17o-Xylene 1 01/26/24 01:36 V42813ENM 0.903 J µg/m3 0.217 5.65m,p-Xylene 1 01/26/24 01:36 V42813ENM 1.25 J µg/m3 0.157 2.17Xylene (Total)1 01/26/24 01:36 V42813 Surrogate: 4-Bromofluorobenzene Qualifiers/ Definitions Dilution FactorDFAnalyte detected in blankB Method Quantitation LimitMQLEstimated valueJ Page 37 of 66 , REPORT OF ANALYSISReport Number : Project Information : NC 28203 24-019-0015 01102 Hart & Hickman (Charlotte) 2923 South Tryon St. Ste 100 Matt Vawter Charlotte Received : 01/19/2024 PAM.003 Report Date : 01/31/2024 Sample ID : Lab No : Sampled:MP-P1 94756 Matrix: 1/18/2024 10:02 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):01/26/24 09:00 6.79 B µg/m3 0.202 4.75Acetone 1 01/26/24 14:09 V42833ENM <0.073 µg/m3 0.073 1.60Benzene 1 01/26/24 14:09 V42833ENM <0.147 µg/m3 0.147 10.4Benzyl Chloride 1 01/26/24 14:09 V42833ENM <0.150 µg/m3 0.150 3.35Bromodichloromethane 1 01/26/24 14:09 V42833ENM <0.153 µg/m3 0.153 5.17Bromoform 1 01/26/24 14:09 V42833ENM <0.115 µg/m3 0.115 1.94Bromomethane 1 01/26/24 14:09 V42833ENM <0.328 µg/m3 0.328 1.111,3-Butadiene 1 01/26/24 14:09 V42833ENM <0.060 µg/m3 0.060 6.23Carbon Disulfide 1 01/26/24 14:09 V42833ENM <0.155 µg/m3 0.155 3.15Carbon Tetrachloride 1 01/26/24 14:09 V42833ENM <0.107 µg/m3 0.107 2.30Chlorobenzene 1 01/26/24 14:09 V42833ENM <0.208 µg/m3 0.208 4.26Chlorodibromomethane 1 01/26/24 14:09 V42833ENM <0.164 µg/m3 0.164 1.32Chloroethane 1 01/26/24 14:09 V42833ENM 0.737 J µg/m3 0.086 2.44Chloroform 1 01/26/24 14:09 V42833ENM <0.067 µg/m3 0.067 1.03Chloromethane 1 01/26/24 14:09 V42833ENM <0.161 µg/m3 0.161 3.44Cyclohexane 1 01/26/24 14:09 V42833ENM <0.151 µg/m3 0.151 3.841,2-Dibromoethane 1 01/26/24 14:09 V42833ENM <0.096 µg/m3 0.096 3.011,2-Dichlorobenzene 1 01/26/24 14:09 V42833ENM <0.174 µg/m3 0.174 12.01,3-Dichlorobenzene 1 01/26/24 14:09 V42833ENM <0.186 µg/m3 0.186 3.011,4-Dichlorobenzene 1 01/26/24 14:09 V42833ENM 13.4 µg/m3 0.134 2.47Dichlorodifluoromethane 1 01/26/24 14:09 V42833ENM <0.101 µg/m3 0.101 2.021,1-Dichloroethane 1 01/26/24 14:09 V42833ENM <0.129 µg/m3 0.129 2.021,2-Dichloroethane 1 01/26/24 14:09 V42833ENM Qualifiers/ Definitions Dilution FactorDFAnalyte detected in blankB Method Quantitation LimitMQLEstimated valueJ Page 38 of 66 , REPORT OF ANALYSISReport Number : Project Information : NC 28203 24-019-0015 01102 Hart & Hickman (Charlotte) 2923 South Tryon St. Ste 100 Matt Vawter Charlotte Received : 01/19/2024 PAM.003 Report Date : 01/31/2024 Sample ID : Lab No : Sampled:MP-P1 94756 Matrix: 1/18/2024 10:02 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):01/26/24 09:00 <0.107 µg/m3 0.107 1.981,1-Dichloroethene 1 01/26/24 14:09 V42833ENM <0.095 µg/m3 0.095 1.98cis-1,2-Dichloroethene 1 01/26/24 14:09 V42833ENM <0.108 µg/m3 0.108 1.98trans-1,2-Dichloroethene 1 01/26/24 14:09 V42833ENM <0.205 µg/m3 0.205 2.311,2-Dichloropropane 1 01/26/24 14:09 V42833ENM <0.622 µg/m3 0.622 3.501,2-Dichlorotetrafluoroethane 1 01/26/24 14:09 V42833ENM <0.178 µg/m3 0.178 2.27cis-1,3-Dichloropropene 1 01/26/24 14:09 V42833ENM <0.178 µg/m3 0.178 2.27trans-1,3-Dichloropropene 1 01/26/24 14:09 V42833ENM <0.435 µg/m3 0.435 1.801,4-Dioxane 1 01/26/24 14:09 V42833ENM <0.136 µg/m3 0.136 1.80Ethyl Acetate 1 01/26/24 14:09 V42833ENM 0.968 J µg/m3 0.106 2.17Ethylbenzene 1 01/26/24 14:09 V42833ENM <0.128 µg/m3 0.128 2.464-Ethyltoluene 1 01/26/24 14:09 V42833ENM <0.561 µg/m3 0.561 3.831,1,2-Trichloro-1,2,2-trifluoroethane 1 01/26/24 14:09 V42833ENM <0.143 µg/m3 0.143 2.05Heptane 1 01/26/24 14:09 V42833ENM <0.330 µg/m3 0.330 5.33Hexachlorobutadiene 1 01/26/24 14:09 V42833ENM 0.334 J µg/m3 0.047 1.76n-Hexane 1 01/26/24 14:09 V42833ENM <0.285 µg/m3 0.285 2.052-Hexanone 1 01/26/24 14:09 V42833ENM 2.92 JB µg/m3 0.139 4.92Isopropyl Alcohol 1 01/26/24 14:09 V42833ENM 0.931 J µg/m3 0.224 1.47Methyl Ethyl Ketone (MEK)1 01/26/24 14:09 V42833ENM <0.033 µg/m3 0.033 1.80Methyl tert-butyl ether (MTBE)1 01/26/24 14:09 V42833ENM <0.121 µg/m3 0.121 2.054-Methyl-2-Pentanone 1 01/26/24 14:09 V42833ENM 1.46 J µg/m3 0.488 1.74Methylene Chloride 1 01/26/24 14:09 V42833ENM <0.183 µg/m3 0.183 2.62Naphthalene 1 01/26/24 14:09 V42833ENM Qualifiers/ Definitions Dilution FactorDFAnalyte detected in blankB Method Quantitation LimitMQLEstimated valueJ Page 39 of 66 , REPORT OF ANALYSISReport Number : Project Information : NC 28203 24-019-0015 01102 Hart & Hickman (Charlotte) 2923 South Tryon St. Ste 100 Matt Vawter Charlotte Received : 01/19/2024 PAM.003 Report Date : 01/31/2024 Sample ID : Lab No : Sampled:MP-P1 94756 Matrix: 1/18/2024 10:02 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):01/26/24 09:00 <0.242 µg/m3 0.242 0.860Propene 1 01/26/24 14:09 V42833ENM <0.124 µg/m3 0.124 2.13Styrene 1 01/26/24 14:09 V42833ENM <0.104 µg/m3 0.104 3.431,1,2,2-Tetrachloroethane 1 01/26/24 14:09 V42833ENM 76.1 µg/m3 0.181 3.39 1 01/26/24 14:09 V42833ENM 1.57 µg/m3 0.107 1.47 1 01/26/24 14:09 V42833ENM 0.395 JB µg/m3 0.090 1.88 1 01/26/24 14:09 V42833ENM <0.209 µg/m3 0.209 3.711,2,4-Trichlorobenzene 1 01/26/24 14:09 V42833ENM 0.932 J µg/m3 0.144 2.731,1,1-Trichloroethane 1 01/26/24 14:09 V42833ENM <0.087 µg/m3 0.087 2.731,1,2-Trichloroethane 1 01/26/24 14:09 V42833ENM <0.199 µg/m3 0.199 2.15 1 01/26/24 14:09 V42833ENM 1.74 J µg/m3 0.130 2.81 1 01/26/24 14:09 V42833ENM <0.110 µg/m3 0.110 2.461,2,4-Trimethylbenzene 1 01/26/24 14:09 V42833ENM <0.236 µg/m3 0.236 2.461,3,5-Trimethylbenzene 1 01/26/24 14:09 V42833ENM <0.224 µg/m3 0.224 1.76Vinyl Acetate 1 01/26/24 14:09 V42833ENM <0.127 µg/m3 0.127 1.28Vinyl Chloride 1 01/26/24 14:09 V42833ENM 1.53 J µg/m3 0.157 2.17o-Xylene 1 01/26/24 14:09 V42833ENM 4.52 J µg/m3 0.217 5.65m,p-Xylene 1 01/26/24 14:09 V42833ENM 6.05 J µg/m3 0.157 2.17Xylene (Total)1 01/26/24 14:09 V42833 Surrogate: 4-Bromofluorobenzene Qualifiers/ Definitions Dilution FactorDFAnalyte detected in blankB Method Quantitation LimitMQLEstimated valueJ Page 40 of 66 Quality Control Data 24-019-0015Report No: Project Description: Client ID:Hart & Hickman (Charlotte) PAM.003 QC Prep Batch Method: Volatile Organic Compounds in Air- GC/MS V42735QC Analytical Batch(es): Analysis Method: Analysis Description: TO-15 Prep QC Prep:V42730 Associated Lab Samples: 94745, 94746 LRB-V42730 Matrix: AIRLab Reagent Blank Parameter AnalyzedMQLMDLBlank ResultUnits % Recovery % Rec Limits 01/24/24 12:224.750.2020.959µg/m3Acetone 01/24/24 12:221.600.073<0.073µg/m3Benzene 01/24/24 12:2210.40.147<0.147µg/m3Benzyl Chloride 01/24/24 12:223.350.150<0.150µg/m3Bromodichloromethane 01/24/24 12:225.170.153<0.153µg/m3Bromoform 01/24/24 12:221.940.115<0.115µg/m3Bromomethane 01/24/24 12:221.110.328<0.328µg/m31,3-Butadiene 01/24/24 12:226.230.060<0.060µg/m3Carbon Disulfide 01/24/24 12:223.150.155<0.155µg/m3Carbon Tetrachloride 01/24/24 12:222.300.107<0.107µg/m3Chlorobenzene 01/24/24 12:224.260.208<0.208µg/m3Chlorodibromomethane 01/24/24 12:221.320.164<0.164µg/m3Chloroethane 01/24/24 12:222.440.086<0.086µg/m3Chloroform 01/24/24 12:221.030.067<0.067µg/m3Chloromethane 01/24/24 12:223.440.161<0.161µg/m3Cyclohexane 01/24/24 12:223.840.151<0.151µg/m31,2-Dibromoethane 01/24/24 12:223.010.096<0.096µg/m31,2-Dichlorobenzene 01/24/24 12:2212.00.174<0.174µg/m31,3-Dichlorobenzene 01/24/24 12:223.010.186<0.186µg/m31,4-Dichlorobenzene 01/24/24 12:222.470.134<0.134µg/m3Dichlorodifluoromethane 01/24/24 12:222.020.101<0.101µg/m31,1-Dichloroethane 01/24/24 12:222.020.129<0.129µg/m31,2-Dichloroethane 01/24/24 12:221.980.107<0.107µg/m31,1-Dichloroethene 01/24/24 12:221.980.095<0.095µg/m3cis-1,2-Dichloroethene 01/24/24 12:221.980.108<0.108µg/m3trans-1,2-Dichloroethene 01/24/24 12:222.310.205<0.205µg/m31,2-Dichloropropane 01/24/24 12:223.500.622<0.622µg/m31,2-Dichlorotetrafluoroethane Page 1 of 22Date:01/31/2024 03:04 PM Page 41 of 66 Quality Control Data 24-019-0015Report No: Project Description: Client ID:Hart & Hickman (Charlotte) PAM.003 QC Prep Batch Method: Volatile Organic Compounds in Air- GC/MS V42735QC Analytical Batch(es): Analysis Method: Analysis Description: TO-15 Prep QC Prep:V42730 Associated Lab Samples: 94745, 94746 LRB-V42730 Matrix: AIRLab Reagent Blank Parameter AnalyzedMQLMDLBlank ResultUnits % Recovery % Rec Limits 01/24/24 12:222.270.178<0.178µg/m3cis-1,3-Dichloropropene 01/24/24 12:222.270.178<0.178µg/m3trans-1,3-Dichloropropene 01/24/24 12:221.800.435<0.435µg/m31,4-Dioxane 01/24/24 12:221.800.136<0.136µg/m3Ethyl Acetate 01/24/24 12:222.170.106<0.106µg/m3Ethylbenzene 01/24/24 12:222.460.128<0.128µg/m34-Ethyltoluene 01/24/24 12:223.830.561<0.561µg/m31,1,2-Trichloro-1,2,2-trifluoroethane 01/24/24 12:222.050.143<0.143µg/m3Heptane 01/24/24 12:225.330.330<0.330µg/m3Hexachlorobutadiene 01/24/24 12:221.760.047<0.047µg/m3n-Hexane 01/24/24 12:222.050.285<0.285µg/m32-Hexanone 01/24/24 12:224.920.1391.98µg/m3Isopropyl Alcohol 01/24/24 12:221.470.224<0.224µg/m3Methyl Ethyl Ketone (MEK) 01/24/24 12:221.800.033<0.033µg/m3Methyl tert-butyl ether (MTBE) 01/24/24 12:222.050.121<0.121µg/m34-Methyl-2-Pentanone 01/24/24 12:221.740.488<0.488µg/m3Methylene Chloride 01/24/24 12:222.620.183<0.183µg/m3Naphthalene 01/24/24 12:220.8600.242<0.242µg/m3Propene 01/24/24 12:222.130.124<0.124µg/m3Styrene 01/24/24 12:223.430.104<0.104µg/m31,1,2,2-Tetrachloroethane 01/24/24 12:223.390.181<0.181µg/m3 01/24/24 12:221.470.107<0.107µg/m3 01/24/24 12:221.880.090<0.090µg/m3 01/24/24 12:223.710.209<0.209µg/m31,2,4-Trichlorobenzene 01/24/24 12:222.730.144<0.144µg/m31,1,1-Trichloroethane 01/24/24 12:222.730.087<0.087µg/m31,1,2-Trichloroethane 01/24/24 12:222.150.199<0.199µg/m3 Page 2 of 22Date:01/31/2024 03:04 PM Page 42 of 66 Quality Control Data 24-019-0015Report No: Project Description: Client ID:Hart & Hickman (Charlotte) PAM.003 QC Prep Batch Method: Volatile Organic Compounds in Air- GC/MS V42735QC Analytical Batch(es): Analysis Method: Analysis Description: TO-15 Prep QC Prep:V42730 Associated Lab Samples: 94745, 94746 LRB-V42730 Matrix: AIRLab Reagent Blank Parameter AnalyzedMQLMDLBlank ResultUnits % Recovery % Rec Limits 01/24/24 12:222.810.130<0.130µg/m3 01/24/24 12:222.460.110<0.110µg/m31,2,4-Trimethylbenzene 01/24/24 12:222.460.236<0.236µg/m31,3,5-Trimethylbenzene 01/24/24 12:221.760.224<0.224µg/m3Vinyl Acetate 01/24/24 12:221.280.127<0.127µg/m3Vinyl Chloride 01/24/24 12:222.170.157<0.157µg/m3o-Xylene 01/24/24 12:225.650.217<0.217µg/m3m,p-Xylene 01/24/24 12:224-Bromofluorobenzene (S)99.1 70-130 LCS-V42730Laboratory Control Sample Parameter LCS %RecLCS Result Spike Conc.Units % Rec Limits 98.311.711.9µg/m3Acetone 70-130 98.715.816.0µg/m3Benzene 70-130 10527.325.9µg/m3Benzyl Chloride 70-130 98.533.033.5µg/m3Bromodichloromethane 70-130 97.250.351.7µg/m3Bromoform 70-130 10219.719.4µg/m3Bromomethane 70-130 10011.111.1µg/m31,3-Butadiene 70-130 10115.815.6µg/m3Carbon Disulfide 70-130 97.430.731.5µg/m3Carbon Tetrachloride 70-130 10023.023.0µg/m3Chlorobenzene 70-130 98.141.842.6µg/m3Chlorodibromomethane 70-130 98.413.013.2µg/m3Chloroethane 70-130 99.524.324.4µg/m3Chloroform 70-130 10010.310.3µg/m3Chloromethane 70-130 98.216.917.2µg/m3Cyclohexane 70-130 Page 3 of 22Date:01/31/2024 03:04 PM Page 43 of 66 Quality Control Data 24-019-0015Report No: Project Description: Client ID:Hart & Hickman (Charlotte) PAM.003 QC Prep Batch Method: Volatile Organic Compounds in Air- GC/MS V42735QC Analytical Batch(es): Analysis Method: Analysis Description: TO-15 Prep QC Prep:V42730 LCS-V42730Laboratory Control Sample Parameter LCS %RecLCS Result Spike Conc.Units % Rec Limits 10138.638.4µg/m31,2-Dibromoethane 70-130 10832.430.1µg/m31,2-Dichlorobenzene 70-130 10732.230.1µg/m31,3-Dichlorobenzene 70-130 10732.330.1µg/m31,4-Dichlorobenzene 70-130 10024.824.7µg/m3Dichlorodifluoromethane 70-130 10020.320.2µg/m31,1-Dichloroethane 70-130 99.020.020.2µg/m31,2-Dichloroethane 70-130 10220.119.8µg/m31,1-Dichloroethene 70-130 10320.319.8µg/m3cis-1,2-Dichloroethene 70-130 10320.319.8µg/m3trans-1,2-Dichloroethene 70-130 98.222.723.1µg/m31,2-Dichloropropane 70-130 10235.635.0µg/m31,2-Dichlorotetrafluoroethane 70-130 10022.722.7µg/m3cis-1,3-Dichloropropene 70-130 99.522.622.7µg/m3trans-1,3-Dichloropropene 70-130 97.717.618.0µg/m31,4-Dioxane 70-130 97.217.518.0µg/m3Ethyl Acetate 70-130 10121.921.7µg/m3Ethylbenzene 70-130 10425.524.6µg/m34-Ethyltoluene 70-130 10239.138.3µg/m31,1,2-Trichloro-1,2,2-trifluoroethane 70-130 98.020.120.5µg/m3Heptane 70-130 10053.353.3µg/m3Hexachlorobutadiene 70-130 10117.717.6µg/m3n-Hexane 70-130 97.019.920.5µg/m32-Hexanone 70-130 10212.512.3µg/m3Isopropyl Alcohol 70-130 99.314.714.8µg/m3Methyl Ethyl Ketone (MEK)70-130 10118.118.0µg/m3Methyl tert-butyl ether (MTBE)70-130 97.019.920.5µg/m34-Methyl-2-Pentanone 70-130 Page 4 of 22Date:01/31/2024 03:04 PM Page 44 of 66 Quality Control Data 24-019-0015Report No: Project Description: Client ID:Hart & Hickman (Charlotte) PAM.003 QC Prep Batch Method: Volatile Organic Compounds in Air- GC/MS V42735QC Analytical Batch(es): Analysis Method: Analysis Description: TO-15 Prep QC Prep:V42730 LCS-V42730Laboratory Control Sample Parameter LCS %RecLCS Result Spike Conc.Units % Rec Limits 91.916.017.4µg/m3Methylene Chloride 70-130 99.626.126.2µg/m3Naphthalene 70-130 1008.638.61µg/m3Propene 70-130 10221.821.3µg/m3Styrene 70-130 98.833.934.3µg/m31,1,2,2-Tetrachloroethane 70-130 98.833.533.9µg/m3 70-130 96.514.214.7µg/m3 70-130 10018.818.8µg/m3 70-130 10940.637.1µg/m31,2,4-Trichlorobenzene 70-130 98.927.027.3µg/m31,1,1-Trichloroethane 70-130 98.126.827.3µg/m31,1,2-Trichloroethane 70-130 10026.926.9µg/m3 70-130 10228.728.1µg/m3 70-130 10926.924.6µg/m31,2,4-Trimethylbenzene 70-130 10726.424.6µg/m31,3,5-Trimethylbenzene 70-130 98.817.417.6µg/m3Vinyl Acetate 70-130 10213.012.8µg/m3Vinyl Chloride 70-130 10122.021.7µg/m3o-Xylene 70-130 10244.443.4µg/m3m,p-Xylene 70-130 1044-Bromofluorobenzene (S)70-130 Page 5 of 22Date:01/31/2024 03:04 PM Page 45 of 66 Quality Control Data 24-019-0015Report No: Project Description: Client ID:Hart & Hickman (Charlotte) PAM.003 QC Prep Batch Method: Volatile Organic Compounds in Air- GC/MS V42813QC Analytical Batch(es): Analysis Method: Analysis Description: TO-15 Prep QC Prep:V42810 Associated Lab Samples: 94755 LRB-V42810 Matrix: AIRLab Reagent Blank Parameter AnalyzedMQLMDLBlank ResultUnits % Recovery % Rec Limits 01/25/24 10:524.750.2021.07µg/m3Acetone 01/25/24 10:521.600.073<0.073µg/m3Benzene 01/25/24 10:5210.40.147<0.147µg/m3Benzyl Chloride 01/25/24 10:523.350.150<0.150µg/m3Bromodichloromethane 01/25/24 10:525.170.153<0.153µg/m3Bromoform 01/25/24 10:521.940.115<0.115µg/m3Bromomethane 01/25/24 10:521.110.328<0.328µg/m31,3-Butadiene 01/25/24 10:526.230.060<0.060µg/m3Carbon Disulfide 01/25/24 10:523.150.155<0.155µg/m3Carbon Tetrachloride 01/25/24 10:522.300.107<0.107µg/m3Chlorobenzene 01/25/24 10:524.260.208<0.208µg/m3Chlorodibromomethane 01/25/24 10:521.320.164<0.164µg/m3Chloroethane 01/25/24 10:522.440.086<0.086µg/m3Chloroform 01/25/24 10:521.030.067<0.067µg/m3Chloromethane 01/25/24 10:523.440.161<0.161µg/m3Cyclohexane 01/25/24 10:523.840.151<0.151µg/m31,2-Dibromoethane 01/25/24 10:523.010.096<0.096µg/m31,2-Dichlorobenzene 01/25/24 10:5212.00.174<0.174µg/m31,3-Dichlorobenzene 01/25/24 10:523.010.186<0.186µg/m31,4-Dichlorobenzene 01/25/24 10:522.470.134<0.134µg/m3Dichlorodifluoromethane 01/25/24 10:522.020.101<0.101µg/m31,1-Dichloroethane 01/25/24 10:522.020.129<0.129µg/m31,2-Dichloroethane 01/25/24 10:521.980.107<0.107µg/m31,1-Dichloroethene 01/25/24 10:521.980.095<0.095µg/m3cis-1,2-Dichloroethene 01/25/24 10:521.980.108<0.108µg/m3trans-1,2-Dichloroethene 01/25/24 10:522.310.205<0.205µg/m31,2-Dichloropropane 01/25/24 10:523.500.622<0.622µg/m31,2-Dichlorotetrafluoroethane Page 6 of 22Date:01/31/2024 03:04 PM Page 46 of 66 Quality Control Data 24-019-0015Report No: Project Description: Client ID:Hart & Hickman (Charlotte) PAM.003 QC Prep Batch Method: Volatile Organic Compounds in Air- GC/MS V42813QC Analytical Batch(es): Analysis Method: Analysis Description: TO-15 Prep QC Prep:V42810 Associated Lab Samples: 94755 LRB-V42810 Matrix: AIRLab Reagent Blank Parameter AnalyzedMQLMDLBlank ResultUnits % Recovery % Rec Limits 01/25/24 10:522.270.178<0.178µg/m3cis-1,3-Dichloropropene 01/25/24 10:522.270.178<0.178µg/m3trans-1,3-Dichloropropene 01/25/24 10:521.800.435<0.435µg/m31,4-Dioxane 01/25/24 10:521.800.136<0.136µg/m3Ethyl Acetate 01/25/24 10:522.170.106<0.106µg/m3Ethylbenzene 01/25/24 10:522.460.128<0.128µg/m34-Ethyltoluene 01/25/24 10:523.830.561<0.561µg/m31,1,2-Trichloro-1,2,2-trifluoroethane 01/25/24 10:522.050.143<0.143µg/m3Heptane 01/25/24 10:525.330.330<0.330µg/m3Hexachlorobutadiene 01/25/24 10:521.760.047<0.047µg/m3n-Hexane 01/25/24 10:522.050.285<0.285µg/m32-Hexanone 01/25/24 10:524.920.1392.35µg/m3Isopropyl Alcohol 01/25/24 10:521.470.224<0.224µg/m3Methyl Ethyl Ketone (MEK) 01/25/24 10:521.800.033<0.033µg/m3Methyl tert-butyl ether (MTBE) 01/25/24 10:522.050.121<0.121µg/m34-Methyl-2-Pentanone 01/25/24 10:521.740.488<0.488µg/m3Methylene Chloride 01/25/24 10:522.620.183<0.183µg/m3Naphthalene 01/25/24 10:520.8600.242<0.242µg/m3Propene 01/25/24 10:522.130.124<0.124µg/m3Styrene 01/25/24 10:523.430.104<0.104µg/m31,1,2,2-Tetrachloroethane 01/25/24 10:523.390.181<0.181µg/m3 01/25/24 10:521.470.107<0.107µg/m3 01/25/24 10:521.880.090<0.090µg/m3 01/25/24 10:523.710.209<0.209µg/m31,2,4-Trichlorobenzene 01/25/24 10:522.730.144<0.144µg/m31,1,1-Trichloroethane 01/25/24 10:522.730.087<0.087µg/m31,1,2-Trichloroethane 01/25/24 10:522.150.199<0.199µg/m3 Page 7 of 22Date:01/31/2024 03:04 PM Page 47 of 66 Quality Control Data 24-019-0015Report No: Project Description: Client ID:Hart & Hickman (Charlotte) PAM.003 QC Prep Batch Method: Volatile Organic Compounds in Air- GC/MS V42813QC Analytical Batch(es): Analysis Method: Analysis Description: TO-15 Prep QC Prep:V42810 Associated Lab Samples: 94755 LRB-V42810 Matrix: AIRLab Reagent Blank Parameter AnalyzedMQLMDLBlank ResultUnits % Recovery % Rec Limits 01/25/24 10:522.810.130<0.130µg/m3 01/25/24 10:522.460.110<0.110µg/m31,2,4-Trimethylbenzene 01/25/24 10:522.460.236<0.236µg/m31,3,5-Trimethylbenzene 01/25/24 10:521.760.224<0.224µg/m3Vinyl Acetate 01/25/24 10:521.280.127<0.127µg/m3Vinyl Chloride 01/25/24 10:522.170.157<0.157µg/m3o-Xylene 01/25/24 10:525.650.217<0.217µg/m3m,p-Xylene 01/25/24 10:524-Bromofluorobenzene (S)96.9 70-130 LCS-V42810Laboratory Control Sample Parameter LCS %RecLCS Result Spike Conc.Units % Rec Limits 10011.911.9µg/m3Acetone 70-130 10016.016.0µg/m3Benzene 70-130 10727.825.9µg/m3Benzyl Chloride 70-130 99.133.233.5µg/m3Bromodichloromethane 70-130 97.450.451.7µg/m3Bromoform 70-130 10119.619.4µg/m3Bromomethane 70-130 10211.311.1µg/m31,3-Butadiene 70-130 10316.015.6µg/m3Carbon Disulfide 70-130 98.731.131.5µg/m3Carbon Tetrachloride 70-130 10323.723.0µg/m3Chlorobenzene 70-130 98.542.042.6µg/m3Chlorodibromomethane 70-130 99.213.113.2µg/m3Chloroethane 70-130 10124.724.4µg/m3Chloroform 70-130 10210.510.3µg/m3Chloromethane 70-130 10117.317.2µg/m3Cyclohexane 70-130 Page 8 of 22Date:01/31/2024 03:04 PM Page 48 of 66 Quality Control Data 24-019-0015Report No: Project Description: Client ID:Hart & Hickman (Charlotte) PAM.003 QC Prep Batch Method: Volatile Organic Compounds in Air- GC/MS V42813QC Analytical Batch(es): Analysis Method: Analysis Description: TO-15 Prep QC Prep:V42810 LCS-V42810Laboratory Control Sample Parameter LCS %RecLCS Result Spike Conc.Units % Rec Limits 10439.838.4µg/m31,2-Dibromoethane 70-130 11233.630.1µg/m31,2-Dichlorobenzene 70-130 11133.330.1µg/m31,3-Dichlorobenzene 70-130 11334.030.1µg/m31,4-Dichlorobenzene 70-130 10225.324.7µg/m3Dichlorodifluoromethane 70-130 10220.620.2µg/m31,1-Dichloroethane 70-130 10120.420.2µg/m31,2-Dichloroethane 70-130 10420.619.8µg/m31,1-Dichloroethene 70-130 10420.519.8µg/m3cis-1,2-Dichloroethene 70-130 10420.519.8µg/m3trans-1,2-Dichloroethene 70-130 10123.323.1µg/m31,2-Dichloropropane 70-130 10336.035.0µg/m31,2-Dichlorotetrafluoroethane 70-130 10122.922.7µg/m3cis-1,3-Dichloropropene 70-130 10122.922.7µg/m3trans-1,3-Dichloropropene 70-130 98.817.818.0µg/m31,4-Dioxane 70-130 10018.018.0µg/m3Ethyl Acetate 70-130 10322.321.7µg/m3Ethylbenzene 70-130 10626.124.6µg/m34-Ethyltoluene 70-130 10439.738.3µg/m31,1,2-Trichloro-1,2,2-trifluoroethane 70-130 10020.620.5µg/m3Heptane 70-130 10153.953.3µg/m3Hexachlorobutadiene 70-130 10218.017.6µg/m3n-Hexane 70-130 10120.720.5µg/m32-Hexanone 70-130 10212.612.3µg/m3Isopropyl Alcohol 70-130 10114.914.8µg/m3Methyl Ethyl Ketone (MEK)70-130 10118.218.0µg/m3Methyl tert-butyl ether (MTBE)70-130 10020.520.5µg/m34-Methyl-2-Pentanone 70-130 Page 9 of 22Date:01/31/2024 03:04 PM Page 49 of 66 Quality Control Data 24-019-0015Report No: Project Description: Client ID:Hart & Hickman (Charlotte) PAM.003 QC Prep Batch Method: Volatile Organic Compounds in Air- GC/MS V42813QC Analytical Batch(es): Analysis Method: Analysis Description: TO-15 Prep QC Prep:V42810 LCS-V42810Laboratory Control Sample Parameter LCS %RecLCS Result Spike Conc.Units % Rec Limits 93.616.317.4µg/m3Methylene Chloride 70-130 10527.626.2µg/m3Naphthalene 70-130 1048.948.61µg/m3Propene 70-130 10221.821.3µg/m3Styrene 70-130 10034.434.3µg/m31,1,2,2-Tetrachloroethane 70-130 10134.433.9µg/m3 70-130 99.314.614.7µg/m3 70-130 10319.318.8µg/m3 70-130 11542.837.1µg/m31,2,4-Trichlorobenzene 70-130 10027.427.3µg/m31,1,1-Trichloroethane 70-130 99.227.127.3µg/m31,1,2-Trichloroethane 70-130 10227.426.9µg/m3 70-130 10429.328.1µg/m3 70-130 11227.624.6µg/m31,2,4-Trimethylbenzene 70-130 11027.024.6µg/m31,3,5-Trimethylbenzene 70-130 97.117.117.6µg/m3Vinyl Acetate 70-130 10213.112.8µg/m3Vinyl Chloride 70-130 10422.621.7µg/m3o-Xylene 70-130 10445.143.4µg/m3m,p-Xylene 70-130 1044-Bromofluorobenzene (S)70-130 Page 10 of 22Date:01/31/2024 03:04 PM Page 50 of 66 Quality Control Data 24-019-0015Report No: Project Description: Client ID:Hart & Hickman (Charlotte) PAM.003 QC Prep Batch Method: Volatile Organic Compounds in Air- GC/MS V42833QC Analytical Batch(es): Analysis Method: Analysis Description: TO-15 Prep QC Prep:V42830 Associated Lab Samples: 94756 LRB-V42830 Matrix: AIRLab Reagent Blank Parameter AnalyzedMQLMDLBlank ResultUnits % Recovery % Rec Limits 01/26/24 10:254.750.2021.02µg/m3Acetone 01/26/24 10:251.600.073<0.073µg/m3Benzene 01/26/24 10:2510.40.147<0.147µg/m3Benzyl Chloride 01/26/24 10:253.350.150<0.150µg/m3Bromodichloromethane 01/26/24 10:255.170.153<0.153µg/m3Bromoform 01/26/24 10:251.940.115<0.115µg/m3Bromomethane 01/26/24 10:251.110.328<0.328µg/m31,3-Butadiene 01/26/24 10:256.230.0600.258µg/m3Carbon Disulfide 01/26/24 10:253.150.155<0.155µg/m3Carbon Tetrachloride 01/26/24 10:252.300.107<0.107µg/m3Chlorobenzene 01/26/24 10:254.260.208<0.208µg/m3Chlorodibromomethane 01/26/24 10:251.320.164<0.164µg/m3Chloroethane 01/26/24 10:252.440.086<0.086µg/m3Chloroform 01/26/24 10:251.030.067<0.067µg/m3Chloromethane 01/26/24 10:253.440.161<0.161µg/m3Cyclohexane 01/26/24 10:253.840.151<0.151µg/m31,2-Dibromoethane 01/26/24 10:253.010.096<0.096µg/m31,2-Dichlorobenzene 01/26/24 10:2512.00.174<0.174µg/m31,3-Dichlorobenzene 01/26/24 10:253.010.186<0.186µg/m31,4-Dichlorobenzene 01/26/24 10:252.470.134<0.134µg/m3Dichlorodifluoromethane 01/26/24 10:252.020.101<0.101µg/m31,1-Dichloroethane 01/26/24 10:252.020.129<0.129µg/m31,2-Dichloroethane 01/26/24 10:251.980.107<0.107µg/m31,1-Dichloroethene 01/26/24 10:251.980.095<0.095µg/m3cis-1,2-Dichloroethene 01/26/24 10:251.980.108<0.108µg/m3trans-1,2-Dichloroethene 01/26/24 10:252.310.205<0.205µg/m31,2-Dichloropropane 01/26/24 10:253.500.622<0.622µg/m31,2-Dichlorotetrafluoroethane Page 11 of 22Date:01/31/2024 03:04 PM Page 51 of 66 Quality Control Data 24-019-0015Report No: Project Description: Client ID:Hart & Hickman (Charlotte) PAM.003 QC Prep Batch Method: Volatile Organic Compounds in Air- GC/MS V42833QC Analytical Batch(es): Analysis Method: Analysis Description: TO-15 Prep QC Prep:V42830 Associated Lab Samples: 94756 LRB-V42830 Matrix: AIRLab Reagent Blank Parameter AnalyzedMQLMDLBlank ResultUnits % Recovery % Rec Limits 01/26/24 10:252.270.178<0.178µg/m3cis-1,3-Dichloropropene 01/26/24 10:252.270.178<0.178µg/m3trans-1,3-Dichloropropene 01/26/24 10:251.800.435<0.435µg/m31,4-Dioxane 01/26/24 10:251.800.136<0.136µg/m3Ethyl Acetate 01/26/24 10:252.170.106<0.106µg/m3Ethylbenzene 01/26/24 10:252.460.128<0.128µg/m34-Ethyltoluene 01/26/24 10:253.830.561<0.561µg/m31,1,2-Trichloro-1,2,2-trifluoroethane 01/26/24 10:252.050.143<0.143µg/m3Heptane 01/26/24 10:255.330.330<0.330µg/m3Hexachlorobutadiene 01/26/24 10:251.760.047<0.047µg/m3n-Hexane 01/26/24 10:252.050.285<0.285µg/m32-Hexanone 01/26/24 10:254.920.1392.10µg/m3Isopropyl Alcohol 01/26/24 10:251.470.224<0.224µg/m3Methyl Ethyl Ketone (MEK) 01/26/24 10:251.800.033<0.033µg/m3Methyl tert-butyl ether (MTBE) 01/26/24 10:252.050.121<0.121µg/m34-Methyl-2-Pentanone 01/26/24 10:251.740.488<0.488µg/m3Methylene Chloride 01/26/24 10:252.620.183<0.183µg/m3Naphthalene 01/26/24 10:250.8600.242<0.242µg/m3Propene 01/26/24 10:252.130.124<0.124µg/m3Styrene 01/26/24 10:253.430.104<0.104µg/m31,1,2,2-Tetrachloroethane 01/26/24 10:253.390.181<0.181µg/m3 01/26/24 10:251.470.107<0.107µg/m3 01/26/24 10:251.880.0900.271µg/m3 01/26/24 10:253.710.209<0.209µg/m31,2,4-Trichlorobenzene 01/26/24 10:252.730.144<0.144µg/m31,1,1-Trichloroethane 01/26/24 10:252.730.087<0.087µg/m31,1,2-Trichloroethane 01/26/24 10:252.150.199<0.199µg/m3 Page 12 of 22Date:01/31/2024 03:04 PM Page 52 of 66 Quality Control Data 24-019-0015Report No: Project Description: Client ID:Hart & Hickman (Charlotte) PAM.003 QC Prep Batch Method: Volatile Organic Compounds in Air- GC/MS V42833QC Analytical Batch(es): Analysis Method: Analysis Description: TO-15 Prep QC Prep:V42830 Associated Lab Samples: 94756 LRB-V42830 Matrix: AIRLab Reagent Blank Parameter AnalyzedMQLMDLBlank ResultUnits % Recovery % Rec Limits 01/26/24 10:252.810.130<0.130µg/m3 01/26/24 10:252.460.110<0.110µg/m31,2,4-Trimethylbenzene 01/26/24 10:252.460.236<0.236µg/m31,3,5-Trimethylbenzene 01/26/24 10:251.760.224<0.224µg/m3Vinyl Acetate 01/26/24 10:251.280.127<0.127µg/m3Vinyl Chloride 01/26/24 10:252.170.157<0.157µg/m3o-Xylene 01/26/24 10:255.650.217<0.217µg/m3m,p-Xylene 01/26/24 10:254-Bromofluorobenzene (S)96.9 70-130 LCS-V42830Laboratory Control Sample Parameter LCS %RecLCS Result Spike Conc.Units % Rec Limits 10712.711.9µg/m3Acetone 70-130 10817.216.0µg/m3Benzene 70-130 11329.225.9µg/m3Benzyl Chloride 70-130 10635.533.5µg/m3Bromodichloromethane 70-130 10252.551.7µg/m3Bromoform 70-130 10921.219.4µg/m3Bromomethane 70-130 10912.111.1µg/m31,3-Butadiene 70-130 11017.215.6µg/m3Carbon Disulfide 70-130 10533.231.5µg/m3Carbon Tetrachloride 70-130 10925.023.0µg/m3Chlorobenzene 70-130 10444.142.6µg/m3Chlorodibromomethane 70-130 10614.013.2µg/m3Chloroethane 70-130 10826.424.4µg/m3Chloroform 70-130 10811.110.3µg/m3Chloromethane 70-130 10618.317.2µg/m3Cyclohexane 70-130 Page 13 of 22Date:01/31/2024 03:04 PM Page 53 of 66 Quality Control Data 24-019-0015Report No: Project Description: Client ID:Hart & Hickman (Charlotte) PAM.003 QC Prep Batch Method: Volatile Organic Compounds in Air- GC/MS V42833QC Analytical Batch(es): Analysis Method: Analysis Description: TO-15 Prep QC Prep:V42830 LCS-V42830Laboratory Control Sample Parameter LCS %RecLCS Result Spike Conc.Units % Rec Limits 10841.538.4µg/m31,2-Dibromoethane 70-130 11634.930.1µg/m31,2-Dichlorobenzene 70-130 11635.030.1µg/m31,3-Dichlorobenzene 70-130 11835.430.1µg/m31,4-Dichlorobenzene 70-130 11027.224.7µg/m3Dichlorodifluoromethane 70-130 10922.020.2µg/m31,1-Dichloroethane 70-130 10721.720.2µg/m31,2-Dichloroethane 70-130 11021.819.8µg/m31,1-Dichloroethene 70-130 11122.019.8µg/m3cis-1,2-Dichloroethene 70-130 11121.919.8µg/m3trans-1,2-Dichloroethene 70-130 10724.723.1µg/m31,2-Dichloropropane 70-130 10938.335.0µg/m31,2-Dichlorotetrafluoroethane 70-130 10924.722.7µg/m3cis-1,3-Dichloropropene 70-130 11024.922.7µg/m3trans-1,3-Dichloropropene 70-130 10619.118.0µg/m31,4-Dioxane 70-130 10819.418.0µg/m3Ethyl Acetate 70-130 10823.521.7µg/m3Ethylbenzene 70-130 11227.524.6µg/m34-Ethyltoluene 70-130 11142.438.3µg/m31,1,2-Trichloro-1,2,2-trifluoroethane 70-130 10722.020.5µg/m3Heptane 70-130 10656.453.3µg/m3Hexachlorobutadiene 70-130 10919.117.6µg/m3n-Hexane 70-130 10421.320.5µg/m32-Hexanone 70-130 10813.312.3µg/m3Isopropyl Alcohol 70-130 10715.814.8µg/m3Methyl Ethyl Ketone (MEK)70-130 10919.618.0µg/m3Methyl tert-butyl ether (MTBE)70-130 10722.020.5µg/m34-Methyl-2-Pentanone 70-130 Page 14 of 22Date:01/31/2024 03:04 PM Page 54 of 66 Quality Control Data 24-019-0015Report No: Project Description: Client ID:Hart & Hickman (Charlotte) PAM.003 QC Prep Batch Method: Volatile Organic Compounds in Air- GC/MS V42833QC Analytical Batch(es): Analysis Method: Analysis Description: TO-15 Prep QC Prep:V42830 LCS-V42830Laboratory Control Sample Parameter LCS %RecLCS Result Spike Conc.Units % Rec Limits 99.417.317.4µg/m3Methylene Chloride 70-130 11129.126.2µg/m3Naphthalene 70-130 1099.378.61µg/m3Propene 70-130 11023.521.3µg/m3Styrene 70-130 10536.034.3µg/m31,1,2,2-Tetrachloroethane 70-130 10836.633.9µg/m3 70-130 10515.514.7µg/m3 70-130 11020.718.8µg/m3 70-130 12044.737.1µg/m31,2,4-Trichlorobenzene 70-130 10729.227.3µg/m31,1,1-Trichloroethane 70-130 10528.727.3µg/m31,1,2-Trichloroethane 70-130 10929.326.9µg/m3 70-130 11131.228.1µg/m3 70-130 11728.924.6µg/m31,2,4-Trimethylbenzene 70-130 11528.224.6µg/m31,3,5-Trimethylbenzene 70-130 10718.917.6µg/m3Vinyl Acetate 70-130 10813.812.8µg/m3Vinyl Chloride 70-130 11023.821.7µg/m3o-Xylene 70-130 10947.543.4µg/m3m,p-Xylene 70-130 1044-Bromofluorobenzene (S)70-130 Page 15 of 22Date:01/31/2024 03:04 PM Page 55 of 66 Quality Control Data 24-019-0015Report No: Project Description: Client ID:Hart & Hickman (Charlotte) PAM.003 QC Prep Batch Method: Volatile Organic Compounds in Air- GC/MS V42935QC Analytical Batch(es): Analysis Method: Analysis Description: TO-15 Prep QC Prep:V42920 Associated Lab Samples: 94747, 94748 LRB-V42920 Matrix: AIRLab Reagent Blank Parameter AnalyzedMQLMDLBlank ResultUnits % Recovery % Rec Limits 01/24/24 12:224.750.2020.959µg/m3Acetone 01/24/24 12:221.600.073<0.073µg/m3Benzene 01/24/24 12:226.230.060<0.060µg/m3Carbon Disulfide 01/24/24 12:223.150.155<0.155µg/m3Carbon Tetrachloride 01/24/24 12:222.440.086<0.086µg/m3Chloroform 01/24/24 12:221.030.067<0.067µg/m3Chloromethane 01/24/24 12:223.440.161<0.161µg/m3Cyclohexane 01/24/24 12:223.010.096<0.096µg/m31,2-Dichlorobenzene 01/24/24 12:223.010.186<0.186µg/m31,4-Dichlorobenzene 01/24/24 12:222.470.134<0.134µg/m3Dichlorodifluoromethane 01/24/24 12:221.980.095<0.095µg/m3cis-1,2-Dichloroethene 01/24/24 12:222.170.106<0.106µg/m3Ethylbenzene 01/24/24 12:222.460.128<0.128µg/m34-Ethyltoluene 01/24/24 12:222.050.143<0.143µg/m3Heptane 01/24/24 12:221.760.047<0.047µg/m3n-Hexane 01/24/24 12:222.050.285<0.285µg/m32-Hexanone 01/24/24 12:224.920.1391.98µg/m3Isopropyl Alcohol 01/24/24 12:221.470.224<0.224µg/m3Methyl Ethyl Ketone (MEK) 01/24/24 12:222.050.121<0.121µg/m34-Methyl-2-Pentanone 01/24/24 12:221.740.488<0.488µg/m3Methylene Chloride 01/24/24 12:222.620.183<0.183µg/m3Naphthalene 01/24/24 12:220.8600.242<0.242µg/m3Propene 01/24/24 12:222.130.124<0.124µg/m3Styrene 01/24/24 12:223.390.181<0.181µg/m3 01/24/24 12:221.470.107<0.107µg/m3 01/24/24 12:221.880.090<0.090µg/m3 01/24/24 12:222.150.199<0.199µg/m3 Page 16 of 22Date:01/31/2024 03:04 PM Page 56 of 66 Quality Control Data 24-019-0015Report No: Project Description: Client ID:Hart & Hickman (Charlotte) PAM.003 QC Prep Batch Method: Volatile Organic Compounds in Air- GC/MS V42935QC Analytical Batch(es): Analysis Method: Analysis Description: TO-15 Prep QC Prep:V42920 Associated Lab Samples: 94747, 94748 LRB-V42920 Matrix: AIRLab Reagent Blank Parameter AnalyzedMQLMDLBlank ResultUnits % Recovery % Rec Limits 01/24/24 12:222.810.130<0.130µg/m3 01/24/24 12:222.460.110<0.110µg/m31,2,4-Trimethylbenzene 01/24/24 12:222.460.236<0.236µg/m31,3,5-Trimethylbenzene 01/24/24 12:222.170.157<0.157µg/m3o-Xylene 01/24/24 12:225.650.217<0.217µg/m3m,p-Xylene 01/24/24 12:224-Bromofluorobenzene (S)99.1 70-130 LCS-V42920Laboratory Control Sample Parameter LCS %RecLCS Result Spike Conc.Units % Rec Limits 98.311.711.9µg/m3Acetone 70-130 98.715.816.0µg/m3Benzene 70-130 10115.815.6µg/m3Carbon Disulfide 70-130 97.430.731.5µg/m3Carbon Tetrachloride 70-130 99.524.324.4µg/m3Chloroform 70-130 10010.310.3µg/m3Chloromethane 70-130 98.216.917.2µg/m3Cyclohexane 70-130 10832.430.1µg/m31,2-Dichlorobenzene 70-130 10732.330.1µg/m31,4-Dichlorobenzene 70-130 10024.824.7µg/m3Dichlorodifluoromethane 70-130 10320.319.8µg/m3cis-1,2-Dichloroethene 70-130 10121.921.7µg/m3Ethylbenzene 70-130 10425.524.6µg/m34-Ethyltoluene 70-130 98.020.120.5µg/m3Heptane 70-130 10117.717.6µg/m3n-Hexane 70-130 97.019.920.5µg/m32-Hexanone 70-130 10212.512.3µg/m3Isopropyl Alcohol 70-130 Page 17 of 22Date:01/31/2024 03:04 PM Page 57 of 66 Quality Control Data 24-019-0015Report No: Project Description: Client ID:Hart & Hickman (Charlotte) PAM.003 QC Prep Batch Method: Volatile Organic Compounds in Air- GC/MS V42935QC Analytical Batch(es): Analysis Method: Analysis Description: TO-15 Prep QC Prep:V42920 LCS-V42920Laboratory Control Sample Parameter LCS %RecLCS Result Spike Conc.Units % Rec Limits 99.314.714.8µg/m3Methyl Ethyl Ketone (MEK)70-130 97.019.920.5µg/m34-Methyl-2-Pentanone 70-130 91.916.017.4µg/m3Methylene Chloride 70-130 99.626.126.2µg/m3Naphthalene 70-130 1008.638.61µg/m3Propene 70-130 10221.821.3µg/m3Styrene 70-130 98.833.533.9µg/m3 70-130 96.514.214.7µg/m3 70-130 10018.818.8µg/m3 70-130 10026.926.9µg/m3 70-130 10228.728.1µg/m3 70-130 10926.924.6µg/m31,2,4-Trimethylbenzene 70-130 10726.424.6µg/m31,3,5-Trimethylbenzene 70-130 10122.021.7µg/m3o-Xylene 70-130 10244.443.4µg/m3m,p-Xylene 70-130 1044-Bromofluorobenzene (S)70-130 Page 18 of 22Date:01/31/2024 03:04 PM Page 58 of 66 Quality Control Data 24-019-0015Report No: Project Description: Client ID:Hart & Hickman (Charlotte) PAM.003 QC Prep Batch Method: Volatile Organic Compounds in Air- GC/MS V42931QC Analytical Batch(es): Analysis Method: Analysis Description: TO-15 Prep QC Prep:V42921 Associated Lab Samples: 94749, 94750, 94751, 94752, 94753, 94754 LRB-V42921 Matrix: AIRLab Reagent Blank Parameter AnalyzedMQLMDLBlank ResultUnits % Recovery % Rec Limits 01/25/24 10:524.750.2021.07µg/m3Acetone 01/25/24 10:521.600.073<0.073µg/m3Benzene 01/25/24 10:526.230.060<0.060µg/m3Carbon Disulfide 01/25/24 10:523.150.155<0.155µg/m3Carbon Tetrachloride 01/25/24 10:522.440.086<0.086µg/m3Chloroform 01/25/24 10:521.030.067<0.067µg/m3Chloromethane 01/25/24 10:523.440.161<0.161µg/m3Cyclohexane 01/25/24 10:523.010.096<0.096µg/m31,2-Dichlorobenzene 01/25/24 10:523.010.186<0.186µg/m31,4-Dichlorobenzene 01/25/24 10:522.470.134<0.134µg/m3Dichlorodifluoromethane 01/25/24 10:521.980.095<0.095µg/m3cis-1,2-Dichloroethene 01/25/24 10:525.000.1690.414µg/m3Ethanol 01/25/24 10:522.170.106<0.106µg/m3Ethylbenzene 01/25/24 10:522.460.128<0.128µg/m34-Ethyltoluene 01/25/24 10:522.050.143<0.143µg/m3Heptane 01/25/24 10:521.760.047<0.047µg/m3n-Hexane 01/25/24 10:522.050.285<0.285µg/m32-Hexanone 01/25/24 10:524.920.1392.35µg/m3Isopropyl Alcohol 01/25/24 10:521.470.224<0.224µg/m3Methyl Ethyl Ketone (MEK) 01/25/24 10:522.050.121<0.121µg/m34-Methyl-2-Pentanone 01/25/24 10:521.740.488<0.488µg/m3Methylene Chloride 01/25/24 10:522.620.183<0.183µg/m3Naphthalene 01/25/24 10:520.8600.242<0.242µg/m3Propene 01/25/24 10:522.130.124<0.124µg/m3Styrene 01/25/24 10:523.390.181<0.181µg/m3 01/25/24 10:521.470.107<0.107µg/m3 01/25/24 10:521.880.090<0.090µg/m3 Page 19 of 22Date:01/31/2024 03:04 PM Page 59 of 66 Quality Control Data 24-019-0015Report No: Project Description: Client ID:Hart & Hickman (Charlotte) PAM.003 QC Prep Batch Method: Volatile Organic Compounds in Air- GC/MS V42931QC Analytical Batch(es): Analysis Method: Analysis Description: TO-15 Prep QC Prep:V42921 Associated Lab Samples: 94749, 94750, 94751, 94752, 94753, 94754 LRB-V42921 Matrix: AIRLab Reagent Blank Parameter AnalyzedMQLMDLBlank ResultUnits % Recovery % Rec Limits 01/25/24 10:522.150.199<0.199µg/m3 01/25/24 10:522.810.130<0.130µg/m3 01/25/24 10:522.460.110<0.110µg/m31,2,4-Trimethylbenzene 01/25/24 10:522.460.236<0.236µg/m31,3,5-Trimethylbenzene 01/25/24 10:522.170.157<0.157µg/m3o-Xylene 01/25/24 10:525.650.217<0.217µg/m3m,p-Xylene 01/25/24 10:524-Bromofluorobenzene (S)96.9 70-130 LCS-V42921Laboratory Control Sample Parameter LCS %RecLCS Result Spike Conc.Units % Rec Limits 10011.911.9µg/m3Acetone 70-130 10016.016.0µg/m3Benzene 70-130 10316.015.6µg/m3Carbon Disulfide 70-130 98.731.131.5µg/m3Carbon Tetrachloride 70-130 10124.724.4µg/m3Chloroform 70-130 10210.510.3µg/m3Chloromethane 70-130 10117.317.2µg/m3Cyclohexane 70-130 11233.630.1µg/m31,2-Dichlorobenzene 70-130 11334.030.1µg/m31,4-Dichlorobenzene 70-130 10225.324.7µg/m3Dichlorodifluoromethane 70-130 10420.519.8µg/m3cis-1,2-Dichloroethene 70-130 95.48.999.42µg/m3Ethanol 70-130 10322.321.7µg/m3Ethylbenzene 70-130 10626.124.6µg/m34-Ethyltoluene 70-130 10020.620.5µg/m3Heptane 70-130 10218.017.6µg/m3n-Hexane 70-130 Page 20 of 22Date:01/31/2024 03:04 PM Page 60 of 66 Quality Control Data 24-019-0015Report No: Project Description: Client ID:Hart & Hickman (Charlotte) PAM.003 QC Prep Batch Method: Volatile Organic Compounds in Air- GC/MS V42931QC Analytical Batch(es): Analysis Method: Analysis Description: TO-15 Prep QC Prep:V42921 LCS-V42921Laboratory Control Sample Parameter LCS %RecLCS Result Spike Conc.Units % Rec Limits 10120.720.5µg/m32-Hexanone 70-130 10212.612.3µg/m3Isopropyl Alcohol 70-130 10114.914.8µg/m3Methyl Ethyl Ketone (MEK)70-130 10020.520.5µg/m34-Methyl-2-Pentanone 70-130 93.616.317.4µg/m3Methylene Chloride 70-130 10527.626.2µg/m3Naphthalene 70-130 1048.948.61µg/m3Propene 70-130 10221.821.3µg/m3Styrene 70-130 10134.433.9µg/m3 70-130 99.314.614.7µg/m3 70-130 10319.318.8µg/m3 70-130 10227.426.9µg/m3 70-130 10429.328.1µg/m3 70-130 11227.624.6µg/m31,2,4-Trimethylbenzene 70-130 11027.024.6µg/m31,3,5-Trimethylbenzene 70-130 10422.621.7µg/m3o-Xylene 70-130 10445.143.4µg/m3m,p-Xylene 70-130 1044-Bromofluorobenzene (S)70-130 Page 21 of 22Date:01/31/2024 03:04 PM Page 61 of 66 Quality Control Data 24-019-0015Report No: Project Description: Client ID:Hart & Hickman (Charlotte) PAM.003 QC Prep Batch Method: Volatile Organic Compounds in Air- GC/MS V42985QC Analytical Batch(es): Analysis Method: Analysis Description: TO-15 Prep QC Prep:V42983 Associated Lab Samples: 94747, 94748, 94749, 94750, 94751, 94752, 94753 LRB-V42983 Matrix: AIRLab Reagent Blank Parameter AnalyzedMQLMDLBlank ResultUnits % Recovery % Rec Limits 01/30/24 08:515.000.169<0.169µg/m3Ethanol 01/30/24 08:514-Bromofluorobenzene (S)98.6 70-130 LCS-V42983Laboratory Control Sample Parameter LCS %RecLCS Result Spike Conc.Units % Rec Limits 10710.19.42µg/m3Ethanol 70-130 1044-Bromofluorobenzene (S)70-130 Page 22 of 22Date:01/31/2024 03:04 PM Page 62 of 66 Fed Ex UPS US Postal Client Lab Courier Other : Shipment Receipt Form Customer Number: Customer Name: Report Number:24-019-0015 Hart & Hickman (Charlotte) 01102 Shipping Method Shipping container/cooler uncompromised? Thermometer ID: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:Angelo Norvell Date & Time:01/19/2024 13:24:59 Special precautions or instructions included? Comments: Page 63 of 66 Pa g e 6 4 o f 6 6 Pa g e 6 5 o f 6 6 Pa g e 6 6 o f 6 6 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: Seoul Food Company Indoor Air Worst-Case North Carolina Department of Environmental Quality Risk Calculator North Davidson II Brownfields Site 421 East 26 St., Charlotte, NC DWM Brownfields 24003-20-060 February 2024 November 2023 EPA RSL Table 2/19/2024 Prepared By:Hart & Hickman, PC Hart & Hickman, PC North Carolina DEQ Risk Calculator Table of Contents Version Date: February 2024 Basis: November 2023 EPA RSL Table Site ID: 24003-20-060 Exposure Unit ID: Seoul Food Company Indoor Air Worst-Case Form No. Input Form 1A Complete Exposure Pathways Input Form 1B Exposure Factors and Target Risks Input Form 1C Contaminant Migration Parameters Input Form 1D Sample Statistics Input Form 2A Soil Exposure Point Concentration Table Input Form 2B Groundwater Exposure Point Concentration Table Input Form 2C Surface Water Exposure Point Concentration Table Input Form 2D Soil Gas Exposure Point Concentration Table Input Form 2E Indoor Air Exposure Point Concentration Table Output Form 1A Risk for Individual Pathways Output Form 1B Sitewide Risk Output Form 2A Resident Soil Output Form 2B Resident Groundwater Use Output Form 2C Non-Residential Worker Soil Output Form 2D Non-Residential Worker Groundwater Use Output Form 2E Construction Worker Soil Output Form 2F Recreator/Trespasser Soil Output Form 2G Recreator/Trespasser Surface Water Output Form 3A Resident Groundwater to Indoor Air Output Form 3B Resident Soil Gas to Indoor Air Output Form 3C Resident Indoor Air Output Form 3D Non-Residential Worker Groundwater to Indoor Air Output Form 3E Non-Residential Worker Soil Gas to Indoor Air Output Form 3F Non-Residential Worker Indoor Air Output Form 4A Soil to Groundwater - Forward Mode Output Form 4B Groundwater to Groundwater - Forward Mode Output Form 4C Soil to Surface Water - Forward Mode Output Form 4D Groundwater to Surface Water - Forward Mode Output Form 4E Soil to Groundwater - Backward Mode Output Form 4F Groundwater to Groundwater - Backward Mode Output Form 4G Soil to Surface Water - Backward Mode Output Form 4H Groundwater to Surface Water - Backward Mode Output Section 4 - Contaminant Migration Worksheets Output Section 3 - Vapor Intrusion Calculators TOC Description DATA INPUT SHEETS Check box if included Input Section 1 - Exposure Pathways & Parameters Input Section 2 - Exposure Point Concentrations DATA OUTPUT SHEETS Output Section 1 - Summary Output for All Calculators Output Section 2 - Direct Contact Soil and Groundwater Calculators North Carolina DEQ Risk Calculator Complete Exposure Pathways Version Date: February 2024 Basis: November 2023 EPA RSL Table Site ID: 24003-20-060 Exposure Unit ID: Seoul Food Company Indoor Air 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: February 2024 Basis: November 2023 EPA RSL Table Site ID: 24003-20-060 Exposure Unit ID: Seoul Food Company Indoor Air 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 16.4 IAS-2 67-64-1 Acetone ug/m3 2.26 IAS-2 71-43-2 Benzene ug/m3 0.666 IAS-2 75-15-0 Carbon Disulfide ug/m3 18.8 IAS-2 67-66-3 Chloroform ug/m3 0.9 IAS-2 74-87-3 Chloromethane ug/m3 2.84 IAS-2 75-71-8 Dichlorodifluoromethane ug/m3 0.777 IAS-1 100-41-4 Ethylbenzene ug/m3 0.48 IAS-2 109-99-9 ~Tetrahydrofuran ug/m3 1.06 IAS-2 142-82-5 Heptane, N-ug/m3 0.909 IAS-2 110-54-3 Hexane, N-ug/m3 54.4 IAS-3 67-63-0 Isopropanol ug/m3 2 IAS-2 78-93-3 Methyl Ethyl Ketone (2-Butanone)ug/m3 2.07 IAS-2 75-09-2 Methylene Chloride ug/m3 0.724 IAS-2 100-42-5 Styrene ug/m3 1.57 IAS-1 127-18-4 Tetrachloroethylene ug/m3 2.9 IAS-2 108-88-3 Toluene ug/m3 1.86 IAS-2 75-69-4 Trichlorofluoromethane ug/m3 3.98 IAS-2 95-63-6 Trimethylbenzene, 1,2,4-ug/m3 1.32 IAS-2 108-67-8 Trimethylbenzene, 1,3,5-ug/m3 3.26 IAS-1 108-38-3 Xylene, m-ug/m3 1.04 IAS-1 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: February 2024 Basis: November 2023 EPA RSL Table Site ID: 24003-20-060 Exposure Unit ID: Seoul Food Company Indoor Air Worst-Case Receptor Pathway Carcinogenic Ris 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 Ris Hazard Index Risk exceeded? Groundwater to Indoor Air NC NC NC Soil Gas to Indoor Air NC NC NC Indoor Air NC NC NC Groundwater to Indoor Air NC NC NC Soil Gas to Indoor Air NC NC NC Indoor Air 3.7E-05 1.7E-01 NO Pathway Source Source Soil NC Source Groundwater NC Source Soil NC Source Groundwater NC 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: 3. NM = Not modeled, user did not check this pathway as complete. 4. NC = Pathway not calculated, required contaminant migration parameters were not entered. 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? North Carolina DEQ Risk Calculator DEQ Risk Calculator - Vapor Intrusion - Non-Residential Worker Indoor Air Version Date: February 2024 Basis: November 2023 EPA RSL Table Site ID: 24003-20-060 Exposure Unit ID: Seoul Food Company Indoor Air Worst-Case 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 16.4 - - 71-43-2 Benzene 2.26 1.6E+00 2.6E+01 1.4E-06 1.7E-02 75-15-0 Carbon Disulfide 0.666 - 6.1E+02 2.2E-04 67-66-3 Chlorofor 18.8 5.3E-01 8.6E+01 3.5E-05 4.4E-02 74-87-3 Chloromethane 0.9 - 7.9E+01 2.3E-03 75-71-8 Dichlorodifluoromethane 2.84 - 8.8E+01 6.5E-03 100-41-4 Ethylbenzene 0.777 4.9E+00 8.8E+02 1.6E-07 1.8E-04 109-99-9 ~Tetrahydrofuran 0.48 - 1.8E+03 5.5E-05 142-82-5 Heptane, N-1.06 - 3.5E+02 6.1E-04 110-54-3 Hexane, N-0.909 - 6.1E+02 3.0E-04 67-63-0 Isopropanol 54.4 - 1.8E+02 6.2E-02 78-93-3 Methyl Ethyl Ketone (2-Butanone)2 - 4.4E+03 9.1E-05 75-09-2 Methylene Chloride 2.07 1.2E+03 5.3E+02 1.7E-09 7.9E-04 100-42-5 Styrene 0.724 - 8.8E+02 1.7E-04 127-18-4 Tetrachloroethylene 1.57 4.7E+01 3.5E+01 3.3E-08 9.0E-03 108-88-3 Toluene 2.9 - 4.4E+03 1.3E-04 75-69-4 Trichlorofluoromethane 1.86 - - 95-63-6 Trimethylbenzene, 1,2,4- 3.98 - 5.3E+01 1.5E-02 108-67-8 Trimethylbenzene, 1,3,5- 1.32 - 5.3E+01 5.0E-03 108-38-3 Xylene, m- 3.26 - 8.8E+01 7.4E-03 95-47-6 Xylene, o- 1.04 - 8.8E+01 2.4E-03 Cumulative: 3.7E-05 1.7E-01 All concentrations are in u /3 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