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Home My WebLink About26065_Service Dist_BAR WP 2023062306/23/2023 Via Email June 23, 2023 NCDEQ – Division of Waste Management Brownfields Redevelopment Section 1646 Mail Service Center Raleigh, North Carolina 27699-1646 Attn: Ms. Carolyn Minnich Re: Brownfields Assessment Work Plan Service Distributing Co. S. Tryon Street, Orchard Circle, and W. Peterson Drive Charlotte, North Carolina Brownfields Project No. 26065-22-060 H&H Project No. BOU-024 Dear Carolyn: On behalf of Boulevard at LoSo Tract 2, LLC, please find the enclosed Brownfields Assessment Work Plan prepared for the Service Distributing Co. Brownfields property. Should you have questions or need additional information, please do not hesitate to contact us. Sincerely, Hart & Hickman, PC Loryn Smith Ralph McGee, PG Project Environmental Scientist Senior Project Manager Enclosures cc: Mr. Michael Bender, Boulevard Real Estate Advisors (via email) Mr. Chris Branch, Boulevard Real Estate Advisors (via email) Mr. Chris Walker, Alexander Ricks (via email) Attachments: Work Plan and Report Checklist Version 3 March 2023 Minimum Requirements Checklist Site Assessment Work Plans and Reports NCDEQ Brownfields Redevelopment Section– March 2023 Instructional Page All references to Prospective Developers include follow-on owners who may be conducting work in accordance with the Brownfields Property Management Branch. To increase predictability and most efficiently assess Brownfields Properties and the redevelopment timing requirements of Prospective Developers or follow-on owners, the Brownfields Redevelopment Section has standardized the format for Site Assessments. This format has been generated in the form of a checklist to allow for ease in submission by the prospective developer’s consultant and for the Brownfields Redevelopment Section’s completeness review. This checklist outlines the minimum requirements and submittal format under the Brownfields Redevelopment Section for Assessment Requirements and Reporting. All Assessment Work Plans and Report submissions to the Brownfields Redevelopment Section must include this completed checklist in the outlined format. These requirements allow DEQ to reduce review time for the Assessment Work Plan and Report and increase process predictability for prospective developers. This checklist will also provide reliable data for risk-based decisions and further expedite the project timeline. Any divergence from these requirements will lengthen the process of assessing risks on the site, may necessitate reprioritization of a project manager’s queue towards projects that meet these requirements. Therefore, delaying production of the brownfields agreement and/or environmental management plan. Any alterations to the checklist on a site-specific basis must be reviewed and approved by the Section prior to implementation. However, in order to respect the schedule of all projects in house and keep the Section’s entire project pipeline moving, we strongly recommend against seeking changes to the checklist. Based on a review of environmental and risk data from our project inventory, please note there are some new points of emphasis that are included herein: 1.For ALL residential reuses; sub-slab vapor assessment (full list EPA TO-15) is required,regardless if existing structures will be removed. If no structures or slabs exist on theBrownfields Property, exterior soil gas assessment is required within all proposed structurefootprints. 2.ALL properties require groundwater data (VOCs, SVOCs and RCRA Metals) from a minimum of three sample locations, depth to groundwater and a resulting potentiometricmap.3.Soil shall be assessed based on areas of concern and redevelopment plans and across thedepth interval of the cut/grading. Work Plan and Report Checklist Version 3 March 2023 Environmental Site Assessment Work Plan Checklist Reviewed and checked by (Name): _____Carolyn Minnich________ Title Page The title page should include the following information. Letter style reports are acceptable, as long as this information is somewhere on the first page. ☒Title of Work Plan ☒Brownfields Project Name (not the development name) ☒Brownfields Project Number ☒Date (updated with each revision) ☐Revision Number ☒Firm PE/PG License Number ☒Individual PE/PG seal & signature Section 1 – Introduction ☒Provide the site location, address, and acreage. ☒Provide a BRIEF summary of the history of the property and its history in the Section. For example: reiterate RECs from a Phase I ESA, indicate if the scope of work was negotiated during a Data Gap Meeting, etc. ☒Briefly list and describe the data gaps the assessment is attempting to fill ☐Indicate if the assessment data is for the use of any other DEQ programs in addition to the Brownfields Redevelopment Section (i.e. the site is a regulated UST, IHSB, etc. property) Section 2 – Scope of Work ☒Provide a general description of proposed scope of work covered in this plan (i.e. 2 new monitoring wells, 6 groundwater samples, 5 exterior soil gas sampling points and 6 soil borings) ☒Discuss samples to be collected by media and source area/location. Generally, the reasoning for the sample locations selected. ☒Describe depths of samples to be collected (Reference Table 1) or how that decision will be made in the field, if needed. ☒State for what each sample will be analyzed (briefly). Reference Table 1. Note: For all residential reuses, sub slab vapor is required, if no slabs exist, exterior soil gas is required within all proposed footprints. Section 3 – Sampling Methodology ☒Reference the guidance documents you intend to use. IHSB, EPA SESD, VI Guidance, Well Construction Rules (NCAC 2C). Note deviations or methodology planned that is not covered by such guidance (e.g., multi-increment sampling, passive air samplers, mobile labs, Hapsite, simultaneous indoor/outdoor radon, high-volume sub-slab vapor testing, PFAS sampling). ☒Describe what will be installed (soil boring, temporary well, permanent well, sub-slab vapor, exterior soil gas, etc.). Include construction details. ☒Discuss installation methodology (Hand Auger, DPT, etc.)Discuss Equilibration Times Work Plan and Report Checklist Version 3 March 2023 Monitoring wells (equilibration time prior to development and equilibration post welldevelopment should be 24 hours, per EPA standard protocols). Vapor:a. Sub slab vapor with minimally invasive points (e.g. Vapor Pins): Manufacturer’sguidelines generally suggest 20 minutes may be sufficient with an airtight cap installed; orb. Sub slab vapor points (other than minimally invasive points) or exterior soil gas points:at least 24 hours (to be purged at installation and at time of sampling with an air-tight capin place in the interim). ☒Discuss sample collection procedures. Include the following, at a minimum: Equipment to be used Purging methods and volumes Stabilization parameters for groundwater sampling Field screening methods Leak check procedures for sub-slab vapor and exterior soil gas samples (Note this is required) Discuss how and when vacuum readings will be collected (for summa cans) Submission of the samples to the laboratory within 48 hours of collection and/or written documentation of temperature maintenance if the situation requires extension beyond 48 hours prior to lab submittal ☒Discuss sample point abandonment Section 4 – Laboratory Analyses ☒Discuss the proposed analyses (include method number, preparation method, if there are concerns with short hold times, etc). ☒Discuss any proposed limitations on the contaminants of concern, if any, and the reason for such limitation (sufficient previous data, indoor air interferences, etc). ☒Discuss laboratory certifications. Please note, NC does not certify labs for air samples. Please specify what certification the proposed air lab holds. ☒Indicate that the Reporting Limits/Method Detection Limits will meet applicable screening criteria(to the extent feasible). Include reporting of J-Flags to meet criteria. ☒Indicate what Level QA/QC will be reported by the laboratory. Level II QA/QC is typically acceptable. Section 5 – QA/QC ☒Specify the duplicate sample frequency. Minimum requirement: 1 duplicate per 20 samples, per media, per method. ☒Discuss Trip Blank. 1 Trip Blank per cooler/shipment of groundwater VOC analyses is required. ☒Discuss how the lab will have sufficient sample volume for MS/MSD analyses. ☒Discuss chain of custody and shipping. Section 6 – Investigation Derived Waste (IDW) Management ☒Discuss what IDW will be generated and how it is proposed to be managed. Management recommendations should be in accordance with 15A NCAC 02T.1503 and 15A NCAC 02H. 0106. Generally, if the Brownfields Property has not previously been assessed, then all IDW must be containerized and characterized prior to management. Previous assessment data that indicate no Hazardous Waste (listed or characteristic) is likely to be encountered in the area of proposed Work Plan and Report Checklist Version 3 March 2023 assessment will be required before thin spreading of IDW on-site is permitted. Section 7 – Reporting This section should discuss the components of the assessment report which will be prepared as a result of the above sample collection. At a minimum, the report shall include: ☒Title Page that is consistent with the requirements listed above. ☒Reporting/summary of site work conducted for all sections outlined above in this checklist; ☒Summary of findings and possible recommendations; ☒All applicable tables and figures (shall include at a minimum the items below) ☐Tables for tabulated analytical data per media sampled and analyzed, compared against applicable screening levels, sample depths and depth to groundwater; ☐Figure depicting actual sample locations collected, with each media depicted in the legend, graphic scale and north arrow; and ☐Groundwater potentiometric map, with graphic scale and north arrow. ☒Appendices shall include (as applicable): ☐Copies of field notes ☐Boring logs for all soil borings, newly constructed monitoring wells, and exterior soil gaslocations ☐Well construction and abandonment records Work Plan Approval Signature Page (see Attachment 1). The Consultant shall complete and submit the Approval Signature Page with the work plan submittal for DEQ signature. Work Plan and Report Checklist Version 3 March 2023 Attachments ☒Attachment 1 – Work Plan Approval Signature Page ☒Table 1 – Proposed Sample Locations and Analyses on a Summary Table that includes: ☐Sample ID ☐Sample Objective ☐Proposed Depth(s) ☐Analytical Method(s) ☐QA/QC Samples ☐Background Samples ☒Figure 1 – Site Location Map ☐Site location on a topographic map base ☐Graphic scale and north arrow ☒Figure 2 – Site Map should include the following ☐Buildings ☐Historical sample locations ☐RECs or other areas of concern ☐Proposed sample locations ☐Sample identification labels ☐Background samples ☐QA/QC samples ☐Graphic scale and north arrow ☐High quality aerial suggested as the base map NA Figure 3 – Site Potentiometric Map that includes the following ☐Buildings ☐Groundwater sample identification labels ☐Arrow noting direction of groundwater flow ☐Graphic scale and north arrow NA Figure 4 – Site Plume Maps (groundwater, soil vapor, etc.) ☒Figure 5 – Proposed Development (if available) ☐Overlay of historical and proposed sample locations ☐Graphic scale and north arrow ☒Appendix – Summary of Historical Analytical Data (if needed) – to include tables and figures only. i https://harthick.sharepoint.com/sites/masterfiles-1/shared documents/aaa-master projects/boulevard realty estate advisors (bou)/bou-024 4220 s. tryon st/bf assessment wp final/r1/26065 - brownfields assessment wp r1_ service distributing co.doc Brownfields Assessment Work Plan Service Distributing Co. Charlotte, North Carolina Brownfields Project No. 26065-22-060 H&H Job No. BOU-024 Table of Contents 1.0 Introduction .............................................................................................................................2 1.1 Background Information .......................................................................................................2 1.2 Previous Assessment Activities .............................................................................................3 2.0 Brownfields Assessment Activities ........................................................................................9 2.1 Receptor Survey ....................................................................................................................9 2.2 Soil Sampling Activities ......................................................................................................10 2.3 Groundwater Sampling Activities .......................................................................................12 2.4 Soil Gas Sampling Activities ...............................................................................................14 2.5 Quality Assurance – Quality Control ..................................................................................16 2.6 Investigation Derived Waste ...............................................................................................17 3.0 Reporting ...............................................................................................................................19 List of Tables Table 1 Sample Summary Table List of Figures Figure 1 Site Location Map Figure 2 Site Map Figure 3 Proposed Sample Location Map List of Appendices Appendix A Historical Analytical Data Appendix B Brownfields Property Receptor Survey Template Form ii https://harthick.sharepoint.com/sites/masterfiles-1/shared documents/aaa-master projects/boulevard realty estate advisors (bou)/bou-024 4220 s. tryon st/bf assessment wp final/r1/26065 - brownfields assessment wp r1_ service distributing co.doc Brownfields Assessment Work Plan Service Distributing Co. Charlotte, North Carolina Brownfields Project No. 26065-22-060 H&H Job No. BOU-024 1.0 Introduction On behalf of Boulevard at LoSo Tract 2, LLC (Prospective Developer or PD), Hart & Hickman, PC (H&H) has prepared this Brownfields Assessment Work Plan (Work Plan) for the Service Distributing Co. Brownfields property (Brownfields Project No. 26065-22-060) located at 4200, 4208, 4214, and 4220 S. Tryon Street, 124 Orchard Circle, and 419 W. Peterson Street in Charlotte, Mecklenburg County, North Carolina (Site). The Site consists of six contiguous parcels (Mecklenburg County Parcel ID Nos. 14525506, 14525510, 14525511, 14525512, 14525513, and 14525514) that collectively total approximately 3.7-acres of land. The Site is located in a rapidly densifying area of the lower South End (LoSo) neighborhood in close proximity to the LYNX Blue Line light rail and uptown Charlotte. A Site location map is provided as Figure 1, and the Site and surrounding area are shown in Figure 2. The Site is currently developed with one approximate 2,000-sq ft storage structure and an asphalt driveway located at 124 Orchard Circle and an approximately 730 sq ft single-family residence and a small storage shed located at 419 W. Peterson Drive. In addition, a north-south oriented overhead powerline right-of-way transects the 124 Orchard Circle Site parcel. The Site parcels along S. Tryon Street were razed in March 2023 but were most recently developed with the following buildings: • one approximately 2,000 square foot (sq ft) warehouse building and one approximately 865 sq ft office building located at 4200 S. Tryon Street; • one approximately 865-sq ft office building located at 4208 S. Tryon Street; and • one approximately 900-sq ft auto repair shop with a detached garage/storage building and two covered car storage structures located at 4214 S. Tryon Street. 2 https://harthick.sharepoint.com/sites/masterfiles-1/shared documents/aaa-master projects/boulevard realty estate advisors (bou)/bou-024 4220 s. tryon st/bf assessment wp final/r1/26065 - brownfields assessment wp r1_ service distributing co.doc The southern portion of the Site (4220 S. Tryon Street) is currently undeveloped land but was previously developed with a gasoline station and a self-service car wash facility. Proposed redevelopment of the Brownfields property includes razing the remaining Site buildings for construction of a multi-story high density residential apartment building with a parking deck, surface parking areas, and limited retail and amenities spaces. Current redevelopment plans include approximately 62,660 square feet (sq ft) of occupiable ground-level residential space, amenity space, and ground-level parking in a planned garage. 1.1 Background Information The Site was agricultural and undeveloped land with an overhead powerline right-of-way on the western portion of the Site prior to the late 1930s. By the late 1940s to the early 1960s, several single-family residences were constructed on the northeastern portion (4200, 4208, and 4214 S. Tryon Street) and the western portion (124 Orchard Circle) of the Site. The residences on the northeastern portion of the Site were converted for commercial uses in the 1960s (4200 S. Tryon Street), the 1980s (4214 S. Tryon Street), and the 1990s (4208 S. Tryon Street). The current warehouse building located on the northern portion of the Site was constructed in the 1980s. Commercial tenant operations in this building have included a heating equipment repair business, an electric company, a tree service, and transportation services. By the 2010s, the commercial building located at 4214 S. Tryon Street was converted into an auto repair shop until operations ceased in late 2022. The single-family residence located on the western portion of the Site (124 Orchard Circle) was razed in the 1980s and a warehouse building was constructed for a landscaping and nursery business. The landscaping and nursery business occupied the western Site parcel in the 1990s until the 2000s. Since the 2000s, there have been no known occupants on this Site parcel. A gasoline station was constructed and operated on the southern portion of the Site (4220 S. Tryon Street) as early as the mid-1960s. In the mid-1980s, a self-service car wash facility was constructed adjacent to the north of the gasoline station. The gasoline station and car wash 3 https://harthick.sharepoint.com/sites/masterfiles-1/shared documents/aaa-master projects/boulevard realty estate advisors (bou)/bou-024 4220 s. tryon st/bf assessment wp final/r1/26065 - brownfields assessment wp r1_ service distributing co.doc facility ceased operations in 2009 and were demolished in 2018. The southern portion of the Site has remained undeveloped vacant land with remnants of the car wash foundations since that time. The single-family residence at 419 W. Peterson Drive was constructed in the late 1940s and the storage shed was constructed in the late 1980s. The residence has been occupied for residential use by multiple tenants since construction. 1.2 Previous Assessment Activities Former Gasoline Station A gasoline service station operated on the 4220 S. Tryon Street Site parcel from at least 1964 until 2009. In 2002, four gasoline underground storage tanks (USTs), a diesel UST, and a kerosene UST were removed from the facility. A petroleum release (Incident No. 24139) was discovered at the Site during the 2002 UST closure activities. Soil samples were collected for laboratory analysis and results indicated the presence of petroleum-related compounds at concentrations above the North Carolina Department of Environmental Quality (DEQ) UST Section Maximum Soil Contaminant Concentrations (MSCCs) in the vicinity of the former USTs, product piping, and product dispensers. Based on information provided in available reports, impacted soil was not removed during UST closure activities. Additional Site assessment activities included advancing eleven (11) soil borings and the installation and sampling of sixteen (16) permanent monitoring wells to further evaluate soil and groundwater impacts as part of Phase I and Phase II Limited Site Assessments (LSAs) and a Comprehensive Site Assessment (CSA). Assessment results indicated petroleum related compound concentrations were detected in soil at concentrations above the DEQ UST Section Soil-to-Groundwater and Residential MSCCs, and compounds were detected in groundwater at concentrations above the DEQ 2L Groundwater Quality Standards (2L Standards). Additionally, benzene and methyl tert butyl ether (MTBE) were detected at concentrations above the DEQ 4 https://harthick.sharepoint.com/sites/masterfiles-1/shared documents/aaa-master projects/boulevard realty estate advisors (bou)/bou-024 4220 s. tryon st/bf assessment wp final/r1/26065 - brownfields assessment wp r1_ service distributing co.doc UST Section Gross Contamination Levels (GCLs) in two groundwater monitoring wells. In July 2017, an aggressive fluid vapor recovery (AFVR) event was conducted at the Site to reduce benzene and MTBE concentrations in groundwater. Benzene and MTBE were not detected above GCLs in confirmation groundwater sampling events completed following completion of the AFVR activities in July and October 2017. Because no compounds exceeded GCLs in groundwater samples collected in July and October 2017, DEQ issued a Conditional Notice of No Further Action (NFA) for the release incident on December 4, 2017. The Conditional NFA letter required the recordation of a Notice of Residual Petroleum (NORP) on the property deed restricting groundwater use at the property and restricting the property use to commercial/industrial purposes because compound concentrations above the DEQ UST Section Residential MSCCs remained in Site soil. The NORP for the property was finalized and recorded in January 2019. Information provided in the NORP indicated that remedial activities could be completed to remove impacted soil and the commercial and industrial land use restriction. Additional soil assessment and remedial excavation activities were completed at the Site in January 2020 and January 2021. Results of pre-excavation soil samples indicated that one soil sample, collected in the vicinity of a former dispenser island at a depth of 8 to 10 feet below the ground surface, contained C5-C8 aliphatics and total C9-C22 aromatics hydrocarbon fractions at concentrations above DEQ UST Section Residential MSCCs. No other samples contained target compounds at concentrations above Residential MSCCs. Approximately 259 tons of impacted soil containing concentrations of compounds above residential MSCCs were removed from the area of the former dispenser island and transported off-Site for disposal. Results of four post-excavation confirmation soil samples indicated that impacted soil was adequately removed, and target compounds were not present at concentrations above the laboratory detection limits. Based on the remedial excavation activities and post- excavation confirmation soil sample results, DEQ issued a revised NORP on April 1, 2021, which no longer included a commercial and industrial land use restriction. However, the groundwater use restriction remains on the revised NORP because compound concentrations 5 https://harthick.sharepoint.com/sites/masterfiles-1/shared documents/aaa-master projects/boulevard realty estate advisors (bou)/bou-024 4220 s. tryon st/bf assessment wp final/r1/26065 - brownfields assessment wp r1_ service distributing co.doc were identified at levels above the DEQ 2L Standards in the July and October 2017 groundwater sampling events. The UST release incident has been addressed to the satisfaction of DEQ based on the results of risk evaluations and the implementation of a groundwater use restriction. 2022 Phase I ESA In July 2022, Terracon Consultants, Inc. (Terracon) completed a Phase I Environmental Site Assessment (ESA) for property transaction due diligence purposes and identified the following Recognized Environmental Conditions (RECs) in connection with the Site: • The potential for impact from an undocumented release associated with automotive repair operations conducted at the 4214 S. Tryon Street parcel. • The potential for impact from an undocumented release associated with self-service car washing activities conducted on the 4220 S. Tryon Street parcel from approximately 1980 to 2018. Specifically, the potential for impact near the car wash bay drain systems and the associated subgrade oil/water separator. In addition, Terracon identified the following Controlled REC (CREC) associated with the Site: • Residual impacts associated with the former Servco underground storage tank (UST) release that received a risk based No Further Action designation with implementation of a groundwater use restriction. Phase II ESA H&H completed Phase II ESA sampling at the Site in November 2022. The Phase II ESA included the collection of soil, groundwater, and soil gas samples to evaluate the potential for impact and to assist in the management of Site media during planned redevelopment activities. 6 https://harthick.sharepoint.com/sites/masterfiles-1/shared documents/aaa-master projects/boulevard realty estate advisors (bou)/bou-024 4220 s. tryon st/bf assessment wp final/r1/26065 - brownfields assessment wp r1_ service distributing co.doc Soil assessment activities included collection of multiple soil samples for laboratory analysis from areas of potential concern (areas of staining associated with auto repair operations, adjacent to a subgrade oil/water separator at the former car wash, and adjacent to drains located within the former car wash bays), and in areas of where shallow soil disturbance is likely during future grading activities associated with Site redevelopment. Results of soil sampling activities identified benzo(a)pyrene at a concentration slightly above the DEQ Residential Preliminary Soil Remediation Goal (PSRG) but below the DEQ Industrial/Commercial PSRG in one shallow soil sample collected in the northeastern portion of the 124 Orchard Circle Site parcel. No other compounds were detected at concentrations above the DEQ PSRGs (or background levels in the case of metals) in soil samples collected at the Site including those soil samples collected in areas of potential concern identified in the previously completed Phase I ESA. Groundwater samples were collected in the north-central portion of the Site, downgradient of the on-Site auto repair operations, and near the area of the former carwash drains and oil/water separator system. The results of groundwater sampling activities did not identify the presence of compounds at concentrations above the 2L Standards or the DEQ Vapor Intrusion Groundwater Screening Levels (GWSLs). Soil gas assessment activities were completed at the Site to evaluate the potential for structural vapor intrusion into a future multi-family apartment building. Soil gas sample laboratory analytical results identified multiple petroleum-related compounds at concentrations above the DEQ Vapor Intrusion Sub-slab and Exterior Soil Gas Screening Levels (SGSLs) in the soil gas samples collected from areas nearest the former gasoline station in the southern portion of the Site. The soil gas sampling results are generally consistent with impacts previously identified in connection with the leaking UST system and the results of the Phase II ESA soil and groundwater sampling results which did not identify impacts in other portions of the Site. Using the highest concentration of any compound detected in exterior soil gas, residential use risk calculator results for the soil gas to indoor air vapor intrusion pathway indicated that the cumulative lifetime incremental carcinogenic risk (LICR) and cumulative noncarcinogenic hazard index (HI) values exceed the DEQ and EPA acceptable levels of 1 x 10-4 and 1, 7 https://harthick.sharepoint.com/sites/masterfiles-1/shared documents/aaa-master projects/boulevard realty estate advisors (bou)/bou-024 4220 s. tryon st/bf assessment wp final/r1/26065 - brownfields assessment wp r1_ service distributing co.doc respectively. It is important to note that trichloroethene (TCE) was not detected at concentrations above the laboratory method detection limits in soil, groundwater, or soil gas samples collected at the Site. It is also important to note that the primary driver for potential vapor intrusion risks is attributable to contributions of petroleum-related compounds detected in soil gas samples collected nearest the former Service Distributing Co. UST release incident. Sub-Slab Soil Gas Assessment On January 31, 2023, on behalf of the PD, H&H requested a demolition approval letter from DEQ Brownfields prior to the removal of the Site buildings along S. Tryon Street. On March 1, 2023, DEQ requested the collection of sub-slab soil gas samples for laboratory analysis within the existing Site buildings prior to the demolition activities. At the request of DEQ Brownfields, H&H collected sub-slab soil gas samples within the Site buildings in March 2023. Laboratory analytical results indicated that several compounds were detected at concentrations above the laboratory method detection limits in each sub-slab soil gas sample. Chloroform was detected in the sub-slab soil gas sample and its duplicate sub-slab soil gas sample (SSV-4/SSV- DUP) collected within the Site building located at 4214 S. Tyron Street at concentrations above the DEQ Residential and Non-Residential Vapor Intrusion SGSLs. In addition, bromodichloromethane was also detected at a concentration exceeding the DEQ Residential Vapor Intrusion but below the DEQ Non-Residential Vapor Intrusion SGSL in the SSV-4 sub- slab soil gas sample and its duplicate sample collected from the 4214 S. Tyron Street Site building. No other compounds were detected at concentrations above the DEQ Vapor Intrusion SGSLs in the sub-slab soil gas samples collected from the Site. It is also important to note that TCE was not detected at concentrations above the laboratory method detection limits in sub-slab soil gas samples collected at the Site. H&H utilized the DEQ Risk Calculator (January 2023) assuming a residential land use scenario to further evaluate potential cumulative risks for the soil gas to indoor air vapor intrusion pathway. To model the potential vapor intrusion risks under a hypothetical “worst-case” 8 https://harthick.sharepoint.com/sites/masterfiles-1/shared documents/aaa-master projects/boulevard realty estate advisors (bou)/bou-024 4220 s. tryon st/bf assessment wp final/r1/26065 - brownfields assessment wp r1_ service distributing co.doc scenario, H&H conservatively calculated the cumulative risks using the highest compound concentrations detected in any sub-slab soil gas sample. Hypothetical worst case risk calculator results indicate a cumulative LICR of 1.6 x 10-4 for potential carcinogenic risks and a cumulative HI of 0.22 for potential noncarcinogenic risks. Based on risk calculator results, the cumulative LICR is above acceptable levels for a residential use scenario but the noncarcinogenic HI is within the acceptable level. Review of the risk calculations indicates that the primary driver of potential carcinogenic risks is the chloroform concentration detected in the SSV-4/SSV-DUP sub-slab soil gas samples. To address environmental concerns, Boulevard at LoSo Tract 2, LLC (Boulevard) elected to enter the Site (4200, 4208, 4214, and 4220 S. Tryon Street and 124 Orchard Circle) into the DEQ Brownfields Redevelopment Section on September 9, 2022, and received a letter of eligibility on January 12, 2023. A kick-off/data gap meeting with the DEQ Brownfields Redevelopment Section, Boulevard, and H&H was held on April 12, 2023, to discuss prior Site history, proposed redevelopment plans, data gaps, and the addition of the 419 W. Peterson Drive parcel to the Brownfields Property. The PD submitted an amended Brownfields Property Application to include the 419 W. Peterson Drive parcel in the Brownfields property on April 27, 2023, and an Amended Letter of Eligibility was issued by DEQ on May 24, 2023. H&H has prepared this Work Plan to conduct Brownfields assessment activities at the Site to address DEQ Brownfields requests for additional assessment near the former Service Distributing Co. UST release incident and to complete assessment on the 419 W. Peterson Drive Site parcel where no samples have previously been collected. In addition to Brownfields requests for additional assessment, additional sample locations have been included to assist with the management of Site media during proposed redevelopment at the request of the partnering developer. The Brownfields assessment activities discussed in the following sections focus on collection of soil, groundwater, and soil gas samples. In addition to sampling activities, the previously completed receptor survey will be updated to include the 419 W. Peterson Drive parcel. A summary of the proposed Brownfields assessment activities is provided in the following sections. 9 https://harthick.sharepoint.com/sites/masterfiles-1/shared documents/aaa-master projects/boulevard realty estate advisors (bou)/bou-024 4220 s. tryon st/bf assessment wp final/r1/26065 - brownfields assessment wp r1_ service distributing co.doc 2.0 Brownfields Assessment Activities The sampling activities will be conducted in general accordance with the DEQ Inactive Hazardous Sites Branch (IHSB) Guidelines for Assessment and Cleanup dated September 2022, the DEQ Division of Waste Management (DWM) Vapor Intrusion Guidance (VI Guidance) dated March 2018, the most recent versions of the U.S. Environmental Protection Agency (EPA) Region IV Laboratory Services and Applies Science Division (LSASD) Field Branches Quality System and Technical Procedures guidance, and the DEQ Brownfields Environmental Site Assessment Work Plan Minimum Requirements Checklist dated March 2023. Prior to conducting the proposed assessment field activities, H&H will contact North Carolina 811, the public utility locator, to mark subsurface utilities located on the Site. H&H will also contract with a private utility locator to scan proposed sample locations for subgrade utilities and potential out of use heating oil USTs on the 419 W. Peterson Drive Site parcel. Additionally, soil boring locations will be hand cleared to approximately 5 feet below ground surface (ft bgs) prior to use of mechanical drilling equipment to further screen the boring locations for the presence of subsurface utilities. In accordance with Mecklenburg County rules, temporary monitoring well installation and sampling will be completed under the existing Subsurface Investigation Permit (SIP No. 70003059). After completion of the activities, H&H will update the SIP on the Mecklenburg County Well Information database with temporary monitoring well abandonment records provided by a North Carolina licensed driller. 2.1 Receptor Survey H&H will update the previously completed August 2022 receptor survey to include the 419 W. Peterson Drive Site parcel in accordance with DEQ Brownfields protocols. The receptor survey will include information about land use in the Site area including zoning. H&H will also conduct a field search for water supply wells, basements, utility manways and chases, storm sewers, other underground utilities, drains, and surface water within a 1,500 ft radius of the 10 https://harthick.sharepoint.com/sites/masterfiles-1/shared documents/aaa-master projects/boulevard realty estate advisors (bou)/bou-024 4220 s. tryon st/bf assessment wp final/r1/26065 - brownfields assessment wp r1_ service distributing co.doc Brownfields property boundary. In addition, H&H will review the online Mecklenburg County Well Information System for potential water supply wells in the area and, if warranted, contact utility companies for information concerning underground utilities in the immediate area of the Site. The receptor survey will be completed using the most current version of the Brownfields Property Receptor Survey template form. A copy of the Brownfields Property Receptor Survey template form is provided in Appendix B. 2.2 Soil Sampling Activities H&H will collect eight (8) soil samples for laboratory analysis from eight (8) soil borings (BF- SB-1 through BF-SB-8) to further evaluate potential impacts on the Brownfields property. Locations of the proposed soil borings are shown in Figure 3, and a tabular summary of proposed sample depths, objectives, and laboratory analyses is provided in Table 1. The boring locations are described further below. • One soil boring (BF-SB-1) will be advanced for the collection of a soil sample on the 419 W. Peterson Drive Site parcel where no sampling has previously been completed; • One soil boring (BF-SB-2) will be advanced for the collection of a soil sample to further evaluate current subsurface conditions near the former car wash operations; • Three additional soil borings (BF-SB-3 through BF-SB-5) will be advanced for the collection of soil samples to further evaluate subsurface conditions near the historical Service Distributing Co. release incident; and • Three soil borings (BF-SB-6 through BF-SB-8) will be advanced for the collection of soil samples to further evaluate subsurface conditions on the 124 Orchard Circle Site parcel. H&H will team with a qualified drilling contractor to advance each soil boring utilizing a decontaminated stainless steel hand auger and a track-mounted drill rig capable of direct push technology (DPT) drilling methods where accessible. Continuous soil samples will be collected 11 https://harthick.sharepoint.com/sites/masterfiles-1/shared documents/aaa-master projects/boulevard realty estate advisors (bou)/bou-024 4220 s. tryon st/bf assessment wp final/r1/26065 - brownfields assessment wp r1_ service distributing co.doc from the center of the hand auger bucket or acetate lined macrocore sleeves at each boring. The soil samples will be logged for lithological description and observed for obvious evidence of staining and unusual odors, and field screened for the presence of volatile organic vapors using a calibrated photoionization detector (PID). The soil borings will be advanced to approximately 15 ft bgs at each proposed location. Note that if results of geophysical survey activities completed by the utility locator identify obvious evidence of an anomaly consistent with a heating oil UST on the 419 W. Petterson Drive Site parcel, the soil boring location will be moved from the proposed location to a location adjacent to the downgradient side of the potential UST. One soil sample will be collected for laboratory analysis at each boring location from the depth interval exhibiting the highest likelihood for impact based on field screening results. If field screening results indicate that there is no obvious evidence of impacts in a discrete depth interval, the soil sample will be collected from shallow soils (e.g., 0-2 ft bgs) to evaluate soil that may be disturbed during future redevelopment activities. In addition, to evaluate the documented soils backfilled within the former UST tank pit/excavation areas located on the southern corner of the Site, BF-SB-3 through SB-SB-5 soil samples will be collected from depth intervals in the vadose zone, above the groundwater table interface and within the former UST excavation areas (e.g., 15 ft bgs). The soil samples selected for laboratory analysis will be placed in dedicated laboratory supplied sample containers, labeled with the sample identification, date, and requested analysis, and placed in a laboratory supplied cooler with ice. The samples will be delivered to a North Carolina certified laboratory under standard chain of custody protocols for laboratory analysis of volatile organic compounds (VOCs) by EPA Method 8260, semi-VOCs (SVOCs) by EPA Method 8270, and RCRA metals plus hexavalent chromium by EPA Methods 6020/7471/7199. Following sampling activities, the soil borings will be converted into temporary monitoring wells as described below. Additionally, the soil sample locations will be estimated using a hand-held global positioning system (GPS) unit. 12 https://harthick.sharepoint.com/sites/masterfiles-1/shared documents/aaa-master projects/boulevard realty estate advisors (bou)/bou-024 4220 s. tryon st/bf assessment wp final/r1/26065 - brownfields assessment wp r1_ service distributing co.doc 2.3 Groundwater Sampling Activities H&H will contract a qualified drilling contractor to advance borings for installation and sampling of eight (BF-TMW-1 through BF-TMW-8) temporary groundwater monitoring wells at the Site. The locations of the proposed temporary monitoring wells are shown in Figure 3, and a tabular summary of proposed sample objectives and laboratory analyses is provided in Table 1. The locations of the proposed temporary groundwater monitoring wells are described further below. • Temporary groundwater monitoring well BF-TMW-1 will be installed and sampled to evaluate groundwater conditions on the 419 W. Peterson Drive Site parcel where no sampling has previously been completed on the Brownfields property; • Temporary groundwater monitoring well BF-TMW-2 will be installed and sampled to further evaluate for potential impacts associated with historical on-Site car wash operations; • Temporary groundwater monitoring wells BF-TMW-3 through BF-TMW-5 will be installed and sampled to further evaluation current groundwater conditions in the area of the former Service Distributing Co. UST release incident; and • Temporary groundwater monitoring wells BF-TMW-6 through BF-TMW-8 will be installed and sampled to further evaluate the potential for impacts on the 124 Orchard Circle Site parcel. The temporary groundwater monitoring well borings will be advanced with a track-mounted drill rig capable of using hollow stem auger drilling techniques. During drilling, soil cuttings will be collected and logged for lithologic description and field screened for the presence of obvious staining, unusual odors, and elevated volatile organic vapors using a calibrated PID. Should obvious evidence of impacts be observed based on field screening results, a soil sample will be collected for laboratory analysis using the methodologies described in Section 2.2 above. 13 https://harthick.sharepoint.com/sites/masterfiles-1/shared documents/aaa-master projects/boulevard realty estate advisors (bou)/bou-024 4220 s. tryon st/bf assessment wp final/r1/26065 - brownfields assessment wp r1_ service distributing co.doc The temporary groundwater monitoring wells will be constructed of 2-inch diameter PVC with a 10 to 15 ft section of pre-pack well screen set to bracket the water table and 2-inch diameter PVC well casing to the ground surface. A sand filter pack will be placed from the bottom of the borings to approximately 2 ft above the top of the well screens. The temporary wells will be completed by placing a minimum of an approximately 2 ft thick hydrated bentonite seal above the sand filter pack. Once the temporary monitoring wells are installed, the wells will be allowed to stabilize and equilibrate to static conditions for approximately 24 hours following installation, and a decontaminated electronic water level indicator will be used to measure the depth to the water table relative to the ground surface and tops of well casings in each well. The ground surface and top of casing elevations at each well location will be surveyed by H&H relative to an on-Site datum. The depth to groundwater measurements and survey data will be used to calculate groundwater elevations and estimate the groundwater flow direction at the Site. The wells will then be developed by removing a minimum of 3 to 5 volumes and until field parameters have stabilized (pH± 0.1 Standard Units [SU] and conductivity varies no more than 5%). After development, groundwater samples will be collected utilizing low flow/low stress purging techniques using a peristaltic pump or bladder pump and dedicated polyethylene tubing. The intake point of the pump tubing will be placed in the approximate mid-portion to top-portion of the screened interval of the well, and groundwater will be removed at a rate no greater than 200 milliliters per minute. H&H will utilize calibrated water quality meters to collect measurements of pH, temperature, dissolved oxygen, oxidation reduction potential, turbidity, and specific conductivity at three to five-minute intervals during the purging process. Purging will be considered complete when the field parameters stabilize (pH ± 0.1 SU, conductivity varies no more than 5%, and turbidity is less than 10 Nephelometric Turbidity Units [NTUs]). Once groundwater parameters stabilize, groundwater samples for VOC analysis will be collected directly into laboratory supplied sample containers using the “soda straw” method to minimize the potential for volatile compound loss through the peristaltic pump head. Samples collected for the remaining analyses will be collected directly into laboratory supplied sample containers 14 https://harthick.sharepoint.com/sites/masterfiles-1/shared documents/aaa-master projects/boulevard realty estate advisors (bou)/bou-024 4220 s. tryon st/bf assessment wp final/r1/26065 - brownfields assessment wp r1_ service distributing co.doc from the dedicated sample tubing discharge. The sample containers will be labeled with the sample identification, date, time, and requested analysis, and placed in a laboratory supplied cooler with ice. Groundwater samples will be delivered to a North Carolina certified laboratory under standard chain of custody protocols for analyses of VOCs by EPA Method 8260, SVOCs by EPA Method 8270, and RCRA metals by EPA Method 6020/7470. The groundwater sample locations will be estimated using a hand-held GPS unit. Following sampling activities, the temporary monitoring wells will be permanently abandoned by a licensed well driller and the surfaces will be repaired similar to pre-drilling conditions. 2.4 Soil Gas Sampling Activities To further evaluate the potential for structural vapor intrusion into the proposed apartment building and to establish baseline soil gas concentrations in areas where previous assessment activities have not been completed, H&H will install and sample six (6) temporary exterior soil gas sampling points within the footprint of the proposed apartment building. If the storage shed on the 419 W. Peterson Drive Site parcel is slab-on-grade, soil gas sample BF-SG-2 (see Figure 2) will be collected as a sub-slab soil gas sample within the storage shed. The proposed soil gas sampling point locations are shown in Figure 3, and a tabular summary of proposed sample depths, objectives, and laboratory analyses are provided in Table 1. Exterior Soil Gas Sample Point Installation The soil gas monitoring points will be installed at a depth greater than 5 ft bgs. Based on the anticipated depth to water at the Site (approximately 15 ft bgs to 20 ft bgs) it is anticipated that the soil gas points will be installed to a depth of approximately 7 ft bgs to 9 ft bgs. The soil gas point borings and an approximate 6-inch stainless steel vapor implant screen attached to a length of Teflon® tubing will be advanced utilizing a track-mounted DPT drill rig. Following advancement, the DPT tooling will be retracted and the annular space around the vapor screen will be filled with filter sand to approximately 6-inches above the vapor screen. Following installation of the filter sand, hydrated bentonite will be placed in the boring from the top of the sand to near the ground surface. Once the soil gas points are installed, it will be allowed to 15 https://harthick.sharepoint.com/sites/masterfiles-1/shared documents/aaa-master projects/boulevard realty estate advisors (bou)/bou-024 4220 s. tryon st/bf assessment wp final/r1/26065 - brownfields assessment wp r1_ service distributing co.doc equilibrate for approximately 24 hours prior to collection of the soil gas samples. Sub-Slab Soil Gas Sample Point Installation If the storage shed located on the 416 W. Peterson Drive parcel is determined to be slab-on- grade, soil gas sample location BF-SG-2 will be collected as a sub-slab soil gas point. The sub- slab soil gas sampling point will be installed using a rotary hammer drill and 1½-inch diameter drill bit to advance a pilot hole into the concrete slab to a depth of approximately 1¾ inches below the surface. A drill guide will be placed in the pilot hole and a 5/8-inch diameter drill bit will be utilized to advance the boring through the concrete slab and approximately 6-inches into the underlying soil. Following concrete borehole advancement, loose concrete cuttings will be removed from the boring using a bottlebrush. A Cox-Colvin Vapor Pin™ (vapor pin) assembly (brass sampling point and silicone sleeve) will be seated in the borehole using an installation/extraction tool and hammer. Upon installation of the vapor pin assembly, dedicated Teflon® sample tubing will be connected to the barbed end of the sample point. Soil Gas Sampling The soil gas samples will be collected utilizing laboratory supplied batch certified Summa® canisters (1 or 3-liter canisters depending on laboratory availability) connected to an air-flow regulator calibrated by the laboratory to collect the soil gas sample at a rate of approximately 100 mL/min. Prior to collection of the soil gas samples, a “shut-in” test will be conducted on the sampling train and a helium leak check will be conducted at the soil gas sampling points. The purpose of the shut-in test and helium leak check is to ensure short circuiting with ambient air does not occur during sampling. A description of the shut-in test and helium leak testing procedures is provided below. The shut-in test will be conducted by connecting the flow regulator and vacuum gauge to the Summa® canister and sealing the flow regulator with the laboratory provided brass cap. Once the sampling train is “closed”, the sample valve on the Summa® canister will be opened and the reading on the vacuum gauge will be recorded. The Summa® canister sample valve will then be closed and the vacuum gauge will be observed to ensure no vacuum loss occurs. If the vacuum reading remains the same, the shut-in test will be considered successful. If vacuum loss occurs, 16 https://harthick.sharepoint.com/sites/masterfiles-1/shared documents/aaa-master projects/boulevard realty estate advisors (bou)/bou-024 4220 s. tryon st/bf assessment wp final/r1/26065 - brownfields assessment wp r1_ service distributing co.doc the flow regulator and/or brass cap will be reseated, and the shut-in test will be repeated until the vacuum reading remains stable. Following a successful shut-in test, the Summa® canister will be connected to the Teflon® sample tubing using a brass nut and ferrule assembly to create an airtight seal and a leak check will be performed on the sampling point. The leak check will be performed by constructing a shroud over the sampling point and the entire sample train and flooding the shroud with helium gas. A calibrated helium gas detector will be utilized to measure helium concentrations within the shroud. Once helium concentrations stabilize within the shroud, the sample tubing will be purged of a minimum of three sample train volumes outside of the shroud using a syringe and a three-way valve and a soil gas sample will then be collected into a Tedlar® bag. The purged soil gas will then be analyzed using the helium gas detector to ensure that helium concentrations in the soil gas point are less than 10% of the helium concentrations measured within the shroud. Following a successful leak check, the valve on the Summa® canister will be opened and the soil gas sample will be collected. Vacuum readings on the Summa® canister will be recorded prior to and following the sampling period to ensure adequate sample volume was collected. A vacuum of approximately 5 inches of mercury or more will be maintained within the canister at the conclusion of the sampling activities in accordance with VI Guidance. Following sample collection, the Summa® canister will be shipped to a laboratory under standard chain-of-custody protocols for analysis of VOCs by EPA Method TO-15. The laboratory will be requested to use reporting limits that are below DEQ Residential Vapor Intrusion SGSLs. After sampling is complete, the sample locations will be estimated using a hand-held GPS unit and the sample points will be permanently abandoned with the surface repaired similar to pre- drilling conditions. 2.5 Quality Assurance – Quality Control Non-dedicated equipment and tools will be decontaminated prior to use at each boring or sampling location or following exposure to soil or groundwater. The following samples will be 17 https://harthick.sharepoint.com/sites/masterfiles-1/shared documents/aaa-master projects/boulevard realty estate advisors (bou)/bou-024 4220 s. tryon st/bf assessment wp final/r1/26065 - brownfields assessment wp r1_ service distributing co.doc collected for quality assurance/quality control (QA/QC) purposes: • One duplicate soil and groundwater sample will be collected and analyzed for the same parameters as the parent samples. • One trip blank will accompany the groundwater samples during the field activities as well as during sample shipment and will be analyzed for VOCs by EPA Method 8260. • One duplicate soil gas sample will be collected using a laboratory supplied “t-fitting” which allows for two soil gas samples to be collected from one sampling point simultaneously. The duplicate soil gas sample will be submitted for analysis of VOCs by EPA Method TO-15. Laboratory QA/QC procedures will be employed to ensure appropriate sample handling and analysis and to aid in the review and validation of the analytical data. QA/QC procedures will be conducted in accordance with the method protocols and will include regular equipment maintenance, equipment calibrations, and adherence to specific sample custody and data management procedures. Samples will be analyzed in conjunction with appropriate blanks, laboratory duplicates, continuing calibration standards, surrogate standards, and matrix spiking standards in accordance with approved methodologies to monitor both instrument and analyst performance. Laboratory reporting limits for each analyte will be at or below appropriate screening criteria, where possible. Additionally, H&H will request that the laboratory include estimated concentrations for compounds that are detected at levels above the laboratory method detection limit, but below the laboratory reporting limit (J flags). The laboratory analytical data report and QA package for each group of samples submitted to and analyzed by the subcontracted laboratory will be provided in an appendix to the final report. Laboratory QA data consistent with Level II documentation will be provided for this project. A copy of the completed chain of custody record and shipping receipt will be appended to the corresponding laboratory analytical report included with the final report. 2.6 Investigation Derived Waste 18 https://harthick.sharepoint.com/sites/masterfiles-1/shared documents/aaa-master projects/boulevard realty estate advisors (bou)/bou-024 4220 s. tryon st/bf assessment wp final/r1/26065 - brownfields assessment wp r1_ service distributing co.doc Results of previous assessment activities did not identify the presence of compounds at concentrations above the hazardous waste characteristic or the Rule of 20 for potential exceedance of hazardous waste characteristics. Based on results of previous assessment activities, investigation derived waste (IDW) generated during the assessment activities will be thin spread on-Site. However, if significant impacts are suspected (i.e., free product, elevated PID readings, etc.), the IDW from that location will be containerized and staged on-Site pending analytical results of a composite IDW sample. Based on laboratory analytical results of IDW samples, the containers will be transported off-Site to a suitable facility for disposal. IDW generated during the proposed assessment activities will be managed in accordance with 15A NCAC 02T.1503 and 15A NCAC 02H.0106. 19 https://harthick.sharepoint.com/sites/masterfiles-1/shared documents/aaa-master projects/boulevard realty estate advisors (bou)/bou-024 4220 s. tryon st/bf assessment wp final/r1/26065 - brownfields assessment wp r1_ service distributing co.doc 3.0 Reporting Following completion of the assessment activities and receipt of the analytical data, H&H will document our findings in a Brownfields Assessment Report. The report will include a description of the sampling activities; a figure depicting sample locations; boring logs for the soil borings and temporary well borings, temporary well construction logs; field forms and sampling logs; laboratory analytical data; a discussion of the data in comparison to regulatory screening levels; and conclusions and recommendations concerning our activities. H&H will also use the most recent version of the DEQ risk calculator to further evaluate potential risks based on the data, if warranted. The Brownfields Assessment Report will include the firm PE/PG license numbers and individual PE/PG seal and signature. Table 1 Sample Summary Table Service Distributing Co. Charlotte, North Carolina Brownfields Project No. 26065-22-060 H&H Project No. BOU-024 Sample IDs Sample Type Sample Objective Approximate Boring Depth (ft) Approximate Sample Depth (ft)Number of Samples Laboratory Analysis BF-SB-1 Evaluate soil conditions on the 419 W. Petterson Dr. Site parcel 15 TBD 1 BF-SB-2 Further evaluate soil near former car wash 15 TBD 1 BF-SB-3 through BF-SB-5 Evaluate soil near former USTs and dispensers TBD TBD 1 BF-SB-6 15 TBD 1 BF-SB-7 15 TBD 1 BF-SB-8 15 TBD 1 BF-TMW-1 Evaluate groundwater conditions on the 419 W. Petterson Dr. Site parcel 20-35 varies 1 BF-TMW-2 Further evaluate groundwater near former car wash 20-35 varies 1 BF-TMW-3 20-35 varies 1 BF-TMW-4 20-35 varies 1 BF-TMW-5 20-35 varies 1 BF-TMW-6 20-35 varies 1 BF-TMW-7 20-35 varies 1 BF-TMW-8 20-35 varies 1 BF-SG-1 7-9 7-9 1 BF-SG-2 7-9 7-9 1 BF-SG-3 7-9 7-9 1 BF-SG-4 7-9 7-9 1 BF-SG-5 7-9 7-9 1 BF-SG-6 7-9 7-9 1 BF-SB-DUP Soil 15 TBD 1 VOCs (8260), SVOCs (8270), and RCRA metals plus hexavalent chromium (6020/7471/7199) BF-GW-DUP Groundwater 25-35 varies 1 VOCs (8260), SVOCs (8270), and RCRA metals (6020/7470) BF-SG-DUP Soil Gas 7-9 7-9 1 VOCs (TO-15) Trip Blank Trip Blank NA NA 1 VOCs (8260) Notes: EPA method number follows the laboratory parameter in parenthesis. VOCs = volatile organic compounds; SVOCs = semi-volatile organic compounds; RCRA = Resource Conservation Recovery Act ft = feet; QA/QC = quality assurance/ quality control; VI = vapor intrusion; NA = not applicable TBD = to be determined based on field screening results VOCs (TO-15) QA/QC Soil Groundwater VOCs (8260), SVOCs (8270), and RCRA metals plus hexavalent chromium (6020/7471/7199) Evaluate groundwater conditions near former USTs and dispensers VOCs (8260), SVOCs (8270), and RCRA metals (6020/7470) Further evaluate soil conditions on the 124 Orchard Circle Site parcel Evaluate groundwater conditions on the 124 Orchard Circle Site parcel Soil Gas Evaluate potential VI risks https://harthick.sharepoint.com/sites/MasterFiles‐1/Shared Documents/AAA‐Master Projects/Boulevard Realty Estate Advisors (BOU)/BOU‐024 4220 S. Tryon St/Brownfields Assessment/Work Plan/Sample Summary Table Table 1 (Page 1 of 1) Hart & Hickman, PC USGS The National Map: National Boundaries Dataset, 3DEP ElevationProgram, Geographic Names Information System, National HydrographyDataset, National Land Cover Database, National Structures Dataset, andNational Transportation Dataset; USGS Global Ecosystems; U.S. CensusBureau TIGER/Line data; USFS Road Data; Natural Earth Data; U.S.Department of State Humanitarian Information Unit; and NOAA NationalCenters for Environmental Information, U.S. Coastal Relief Model. Datarefreshed June, 2022. SITE LOCATION MAP SERVICE DISTRIBUTING CO.S. TRYON STREET AND ORCHARD CIRCLE CHARLOTTE, NORTH CAROLINA DATE: 5-3-23 JOB NO: BOU-024 REVISION NO: 0 FIGURE NO: 1 2923 South Tryon Street - Suite 100Charlotte, North Carolina 28203704-586-0007 (p) 704-586-0373 (f)License # C-1269 / # C-245 Geology TITLE PROJECT 0 2,000 4,000 SCALE IN FEET SITE Path: S:\AAA-Master Projects\Boulevard Realty Estate Advisors (BOU)\BOU-024 4220 S. Tryon St\Phase II ESA\Figures\Figure-1_1.mxdN U.S.G.S. QUADRANGLE MAP CHARLOTTE WEST, NORTH CAROLINA 2019CHARLOTTE EAST, NORTH CAROLINA 2019 QUADRANGLE7.5 MINUTE SERIES (TOPOGRAPHIC) REVISION NO. 0 JOB NO. BOU-024 DATE: 5-3-23 FIGURE NO. 2 SERVICE DISTRIBUTING CO.S.TRYON STREET AND ORCHARD CIRCLE CHARLOTTE, NORTH CAROLINA SITE MAP LEGEND BROWNFIELDS PROPERTY BOUNDARY PARCEL BOUNDARY FORMER UST FORMER CAR WASH DRAIN OIL-WATER SEPARATOR 2923 South Tryon Street-Suite 100Charlotte, North Carolina 28203704-586-0007(p) 704-586-0373(f)License # C-1269 / #C-245 Geology NOTES: 1. PARCEL DATA AND AERIAL IMAGERY OBTAINED FROMMECKLENBURG COUNTY GIS (2022). 2. UST = UNDERGROUND STORAGE TANK RESIDENTIAL RESIDENTIAL RESIDENTIAL THE EARLY LEARNING CENTER(4300 S. TRYON STREET) THE OLDE MECKLENBURG BREWERY(4201-4225 S. TRYON STREET) FORMER RICHES & ROSES TRANSPORTATION OR C H A R D C I R C L E W. P E T E R S O N D R I V E S. TRYON STREETRESIDENTIAL RESIDENTIAL VACANT LAND FORMER AUTO REPAIR SHOP AND OFFICE FORMER SERVCOGAS STATION ANDCAR WASH RESIDENTIAL S:\AAA-Master Projects\Boulevard Realty Estate Advisors (BOU)\BOU-024 4220 S. Tryon St\Brownfields Application\Figures\BOU-024 Site Map 110822.dwg, FIG 2, 5/3/2023 1:41:00 PM, tmarbuery REVISION NO. 0 JOB NO. BOU-024 DATE: 6-6-23 FIGURE NO. 3 SERVICE DISTRIBUTING CO.S. TRYON STREET AND ORCHARD CIRCLE CHARLOTTE, NORTH CAROLINA PROPOSED SAMPLE LOCATION MAP LEGEND BROWNFIELDS PROPERTY BOUNDARY PARCEL BOUNDARY FORMER UST FORMER CAR WASH DRAIN OIL-WATER SEPARATOR PROPOSED RESIDENTIAL SPACE PROPOSED RETAIL/AMENITY SPACE PROPOSED COURTYARD SPACE PROPOSED PARKING ADD AREA APPROXIMATE LIMITS OF SOILEXCAVATION (JANUARY 2021) PRIOR SOIL BORING LOCATION(NOVEMBER 2022) PRIOR CO-LOCATED SOIL BORING AND GROUNDWATER MONITORING WELL(NOVEMBER 2022) PRIOR SOIL GAS MONITORINGPOINT LOCATION (NOVEMBER 2022) SUB-SLAB SOIL GAS SAMPLE LOCATION(MARCH 2023) PROPOSED CO-LOCATED SOIL BORINGAND GROUNDWATER MONITORING WELL PROPOSED SOIL GAS MONITORING POINT 2923 South Tryon Street-Suite 100Charlotte, North Carolina 28203704-586-0007(p) 704-586-0373(f)License # C-1269 / #C-245 Geology NOTES: 1. PARCEL DATA AND AERIAL IMAGERY OBTAINED FROMMECKLENBURG COUNTY GIS (2022). 2. UST = UNDERGROUND STORAGE TANK 3. APPROXIMATE LIMITS OF 2021 SOIL EXCAVATION TAKENFROM THE INITIAL ABATMENT ACTION REPORT ANDREQUEST TO MODIFY NORP PREPARED BY H&H DATEFEBRUARY 15, 2021. 4. PRIOR SAMPLE LOCATIONS OBTAINED FROM PHASE IIESA REPORT PREPARED BY H&H DATED NOVEMBER 2022. OR C H A R D C I R C L E W. P E T E R S O N D R I V E S. TRYON STREETSG-1 SG-2 SG-3 SG-4 SG-5 SG-6 SG-7 SG-8 SB-10 SB-9 SB-8 SB-7 SB-6 SB-5 SB-4 TMW-1/SB-1 TMW-2/SB-2 TMW-3/SB-3 BF-SG-1 BF-TMW-3/SB-3 BF-TMW-1/SB-1 SSV-1 SSV-3 SSV-2 SSV-4 BF-SG-2 BF-TMW-2/SB-2BF-SG-3 BF-SG-4 BF-TMW-4/SB-4 BF-SG-5 BF-TMW-6/SB-6 BF-TMW-7/SB-7 BF-TMW-8/SB-8 BF-TMW-5/SB-5 BF-SG-6 S:\AAA-Master Projects\Boulevard Realty Estate Advisors (BOU)\BOU-024 4220 S. Tryon St\Brownfields Assessment\Figures\BOU-024 Site Map1 - Copy.dwg, FIG 4, 6/23/2023 11:29:13 AM, tmarbuery Appendix A Historical Analytical Data Table 1 Summary of Pre- and Post-Excavation Soil Analytical Results Former Servco No. 01611 4220 South Tryon Street Charlotte, North Carolina H&H Job. No. HDG-019 MADEP MADEP MADEP MADEP MADEP MADEP MADEP MADEP Sample ID Date Collected Sample Depth (ft) SS-17RA 01/21/20 3 - 4 <17 <17 <32 BRL <32 <17 <32 BRL SS-17RB 01/21/20 8 - 10 <17 <17 <30 BRL <30 <17 <30 BRL SS-21RA 01/21/20 3 - 4 220 130 <32 130 <32 98 <32 98 SS-21RB 01/21/20 8 - 10 <22 <22 <33 BRL 130 <22 110 110 SS-23RA 01/21/20 3 - 4 570 180 NA 180 NA 310 NA 310SS-23RB 01/21/20 8 - 10 1,200 940 NA 940 NA 960 NA 960 SS-24RA 01/21/20 3 - 4 <30 <30 NA BRL NA <30 NA BRL SS-24RB 01/21/20 8 - 10 <17 <17 NA BRL:NA <17 NA BRL SS-26RA 01/21/20 3 - 4 430 210 NA 210 NA 130 NA 130 SS-26RB 01/21/20 8 - 10 <17 <17 NA BRL NA <17 NA BRL Sidewall-W 01/14/21 9 - 10 <24 <24 NA BRL NA <24 NA BRL Sidewall-E 01/14/21 9 - 10 <21 <21 NA BRL NA <21 NA BRL Sidewall-N 01/14/21 9 - 10 <24 <24 NA BRL NA <24 NA BRL Sidewall-S 01/14/21 9 - 10 <18 <18 NA BRL NA <18 NA BRL 68 NS NS 540 NS NS NS 31 939 NS NS 1,500 31,000 NS NS 469 24,528 NS NS 40,000 810,000 NS NS 12,264 Notes: Concentrations are reported in milligrams per kilogram (mg/kg). SS-23RB Bold concentrations exceed Soil-to-Water MSCCs.Bold and shaded concentrations exceed Soil-to-Water and Residential MSCCs. NA = Not Analyzed; BRL = Below Reporting Limits; NS = No Standard; MSCC = Maximum Soil Contaminant ConcentrationTotal C9-C18 AliphaticsEPH C9-C18 Aliphatics EPH C19-C36 Aliphatics = Soil represented by this soil sample excavated in January 2021.EPH C11-C22 Aromatics Industrial/Commercial MSCC (mg/kg)VPH C9-C12 Aliphatics Total C9-C22 AromaticsAnalytical Method Contaminant of Concern Residential MSCC (mg/kg)VPH C9-C10 Aromatics VPH C5-C8 Aliphatics Soil-to-Water MSCC (mg/kg) S:\AAA-Master Projects\Harris Development Group - HDG\HDG-019 4220 S Tryon\Soil Assessment\Soil Data.xls 2/15/2021 Table 1 (Page 1 of 1) Hart & Hickman, PC MW-9 MW-13 MW-3 MW-1/1R MW-14 MW-2/2RMW-7 MW-10 MW-8MW-12 MW-11 MW-4 MW-6 VW-1 VW-2 MW-5 SS-26 SS-23 SS-21 SS-17 SS-27 SS-24R SS-23R SS-26RSS-17R SS-21R B-2 SS-25 SS-24 REVISION NO. 0 JOB NO. HDG-019 DATE: 1-26-21 FIGURE NO. 2 FORMER SERVCO #01611 4220 SOUTH TRYON STREET CHARLOTTE, NORTH CAROLINA SITE MAP LEGEND SITE PROPERTY BOUNDARY PARCEL BOUNDARY FORMER STRUCTURE FOOTPRINT APPROXIMATE SHALLOWMONITORING WELL LOCATION(ABANDONED) APPROXIMATE DEEP MONITORINGWELL LOCATION (ABANDONED) APPROXIMATE LOCATION OF USTCLOSURE/CSA SOIL BORING EXCEEDING RESIDENTIAL MSCCS APPROXIMATE LOCATION OF 2020SOIL BORING 2923 South Tryon Street-Suite 100Charlotte, North Carolina 28203704-586-0007(p) 704-586-0373(f)License # C-1269 / #C-245 Geology FORMERCARWASH FORMER SERVCONO. 01611 FORMER CANOPYLOCATION OR C H A R D C I R C L E S. TRYON STREETASPHALT ASPHALT VACANTLAND FORMERDISPENSERLOCATION FORMER USTS LOCATION FORMER PRODUCT PIPINGLOCATION FORMER USTSLOCATION NOTES 1. MAP ADAPTED FROM HISTORICAL ASSESSMENTREPORTS PREPARED OTHERS, AERIALPHOTOGRAPHS, AND SITE OBSERVATIONS IN 2020. MW-9 MW-13 MW-3 MW-1/1R MW-2/2R MW-7 MW-10 VW-1 REVISION NO. 0 JOB NO. HDG-019 DATE: 1-26-21 FIGURE NO. 3 FORMER SERVCO #01611 4220 SOUTH TRYON STREET CHARLOTTE, NORTH CAROLINA SOIL EXCAVATION AND CONFIRMATIONSOIL SAMPLE LOCATIONS MAP LEGEND SITE PROPERTY BOUNDARY PARCEL BOUNDARY FORMER STRUCTURE FOOTPRINT APPROXIMATE SHALLOW MONITORINGWELL LOCATION (ABANDONED) APPROXIMATE DEEP MONITORING WELLLOCATION (ABANDONED) APPROXIMATE LIMITS OF SOIL EXCAVATION APPROXIMATE CONFIRMATION SOILSAMPLE LOCATION 2923 South Tryon Street-Suite 100Charlotte, North Carolina 28203704-586-0007(p) 704-586-0373(f)License # C-1269 / #C-245 Geology FORMER CARWASH FORMER SERVCONO. 01611 FORMER CANOPY LOCATION ASPHALT SIDEWALL-E SIDEWALL-S SIDEWALL-W SIDEWALL-N FORMER DISPENSER LOCATION FORMER USTS LOCATION FORMER PRODUCT PIPING LOCATION NOTES 1. MAP ADAPTED FROM HISTORICAL ASSESSMENTREPORTS PREPARED OTHERS, AERIALPHOTOGRAPHS, AND SITE OBSERVATIONS IN 2020. Table 1 Summary of Soil Analytical DataFormer Service Distributing Co.Charlotte, North CarolinaH&H Job No. BOU-024Sample IDSB-1 SB-3 SB-4 SB-5 SB-6 SB-7 SB-8 SB-9 SB-10DateDepth (ft bgs)0-2Range Range UnitsVOCs (8260D)1,2,4-Trimethylbenzene<0.0006 <0.0006 <0.0006 <0.0007 <0.0006 <0.0006 <0.0006 <0.00060.009<0.0006 <0.000763 370----1,3,5-Trimethylbenzene<0.0007 <0.0006 <0.0007 <0.0007 <0.0006 <0.0006 <0.0007 <0.00060.002 J<0.0007 <0.000756 320 ----2-Butanone (MEK)<0.0008 <0.0007 <0.0008 <0.0009 <0.00080.004 J<0.0008 <0.0008 <0.0007 <0.0008 <0.00095,500 40,000 -- --Acetone0.014 J 0.010 J 0.011 J 0.026 J 0.013 J 0.094 0.045 0.008 J 0.004 J<0.0020.006 J 14,000 210,000 -- --Benzene<0.0008 <0.0007 <0.0007 <0.0008 <0.0007 <0.0007 <0.0008 <0.00070.003 J<0.0007 <0.00081.2 5 -- --Carbon Disulfide<0.0008 <0.0007 <0.00080.001 J<0.0008 <0.0008 <0.00080.001 J<0.0007 <0.0008 <0.0009160 740Ethylbenzene<0.0008 <0.0007 <0.0007 <0.0008 <0.0007 <0.0007 <0.0008 <0.00070.001 J<0.0007 <0.0008627 -- --Methyl-tert-butyl ether<0.0008 <0.0007 <0.0008 <0.0008 <0.0007 <0.0007 <0.0008 <0.00070.002 J<0.0008 <0.000849 220 -- --Methylene Chloride<0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.0010.002 J<0.001 <0.00258 650 -- --Toluene<0.0009 <0.0008 <0.0008 <0.0009 <0.0008 <0.0008 <0.0009 <0.00080.032<0.0008 <0.0009990 9,700 -- --n-Butylbenzene0.0008 J<0.0006 <0.0006 <0.0007 <0.0006 <0.0006 <0.0006 <0.0006 <0.0006 <0.0006 <0.0007780 12,000 -- --n-Propylbenzene0.001 J<0.0006 <0.0007 <0.0007 <0.0006 <0.0006 <0.0007 <0.0006 <0.0006 <0.0007 <0.0007780 5,100 -- --o-Xylene<0.0006 <0.0006 <0.0006 <0.0007 <0.0006 <0.0006 <0.0006 <0.00060.013<0.0006 <0.0007140 590 -- --m&p-Xylene<0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.0010.023<0.001 <0.001120 500 -- --Xylene (Total)<0.0006 <0.0006 <0.0006 <0.0007 <0.0006 <0.0006 <0.0006 <0.00060.037<0.0006 <0.0007120 530 -- --SVOCs (8270E)Benzo(a)anthracene<0.180 <0.159 <0.172 <0.1850.179 J<0.164 <0.180 <0.161 <0.157 <0.169 <0.1891.1 21 -- --Benzo(a)pyrene<0.190 <0.168 <0.182 <0.1960.203 J<0.173 <0.190 <0.170 <0.167 <0.179 <0.2000.11 2.1 -- --Benzo(b)fluoranthene<0.189 <0.167 <0.181 <0.1940.260 J<0.172 <0.189 <0.169 <0.165 <0.178 <0.1991.1 21 -- --bis(2-Ethylhexyl)phthalate<0.155 <0.137 <0.149 <0.1600.419 J<0.142 <0.155 <0.139 <0.136 <0.146 <0.16339 160 -- --Chrysene<0.184 <0.163 <0.176 <0.1890.193 J<0.168 <0.183 <0.164 <0.161 <0.173 <0.193110 2,100 -- --Fluoranthene<0.159 <0.146 <0.159 <0.1700.286 J<0.145 <0.159 <0.142 <0.139 <0.156 <0.167480 6,000 -- --Pyrene<0.173 <0.153 <0.166 <0.1780.282 J<0.158 <0.173 <0.155 <0.152 <0.163 <0.182360 4,500 -- --Metals (6020B/7470A)Arsenic0.503 1.45 0.665 0.929 0.518 4.07 2.28 0.481 1.44 1.38 1.11 0.68 3.0 1.0 - 18 1.1 - 3.03Barium66.1 121 169 87.0 77.1 101 273 182 87.8 22.1 58.0 3,100 47,000 50 - 1,000 38 - 110Cadmium <0.0335 <0.02970.0476 J<0.03450.0362 J<0.0306 <0.0335 <0.0300 <0.0294 <0.0316 <0.03531.4 20 1.0 - 10 ND - 0.434Chromium (Total)61.7 29.6 16.4 45.5 53.5 40.1 48.2 17.4 42.2 31.0 76.5 NE NE 7.0 - 300 14 - 77.0Chromium (VI)0.84<0.07 <0.06 <0.05 <0.051.21 1.18 0.27 J 0.38 J 0.40 J 1.69 0.31 6.5 NS ND - 2.89Chromium (III)60.7 29.6 16.4 45.5 53.5 38.9 47.0 17.1 41.8 30.6 74.8 23,000 350,000 NS 13.7 - 74.11Lead9.16 8.13 5.83 8.89 5.58 21.2 38.1 2.97 10.1 7.48 8.46 400 800 ND - 50 1.9 - 36Mercury 0.0307 J 0.0443<0.01490.108 0.0305 J 0.0375 0.0316 J<0.0139 <0.01360.0365 J 0.0250 J 4.7 70 0.03 - 0.52 0.015 - 0.097Selenium0.361 0.547 0.276 J 0.503 0.160 J 1.18 0.772 0.348 0.412 0.611 0.725 78 1,200 <0.1 - 0.8 ND - 1.04Silver 0.0150 J 0.0153 J 0.0160 J 0.0355 J 0.0108 J 0.0236 J 0.0677 J 0.0094 J 0.0121 J 0.0152 J 0.0159 J 78 1,200 ND - 5.0 ND - 0.60Notes:1) North Carolina Department of Environmental Quality (DEQ) Preliminary Soil Remediation Goals (PSRGs) dated July 2022.2) Range and mean values of background metals for North Carolina soils taken from Elements in North American Soils by Dragun and Chekiri, 2005; Cd and Ag concentrations were taken from Southeastern and Conterminous U.S. Soils.3) Background metals data collected from Rhyne Road II Brownfields property (Brownfields Project No. 26025-22-060), Merchants Bonded Cotton Warehouse Brownfields property (Brownfields Project No. 24013-20-060), and Charlotte Van & Storage Co. Brownfields property (Brownfields Project No. 23057-19-060).Concentrations are reported in milligrams per kilogram (mg/kg).Compound concentrations are reported to the laboratory method detection limits.Only those compounds detected in at least one sample are shown in the table above.Laboratory analytical methods are shown in parentheses.With the exception of metals, only constituents detected in at least one sample are shown in the table above.Bold value exceeds Residential PSRG.VOCs = volatile organic compounds; ft bgs= feet below ground surfaceNS = not specified; NE = not established; -- = not applicable; ND = not detectedJ = Compound was detected above the laboratory method detection limit, but below the laboratory reporting limit resulting in a laboratory estimated concentration. Regional Background Metals (2)Nearby Area Background Metals in Brownfields Properties (3)mg/kgSB-2/SB- DUP8/29/20228/30/20225-7 0-2Screening CriteriaResidential PSRGs (1)3-50-2Industrial/ Commercial PSRGs (1)https://harthick.sharepoint.com/sites/MasterFiles‐1/Shared Documents/AAA‐Master Projects/Boulevard Realty Estate Advisors (BOU)/BOU‐024 4220 S. Tryon St/Phase II ESA/Tables/Data Tables_Broadstone YanceyTable 1 (Page 1 of 1)Hart & Hickman, PC Table 2Summary of Well Construction and Groundwater Elevation DataFormer Service Distributing Co.Charlotte, North CarolinaH&H Job No. BOU-024Well IDGround Surface Elevation (ft)TOC Elevation (ft)Total Well Depth (ft below TOC)Screen Length (ft) Screen Interval (ft bgs)Static Depth to Groundwater (ft below TOC)Groundwater Elevation (ft below TOC)TMW-1 99.88 100.00 25 15 10-25 16.68 83.32TMW-2 104.25 104.53 25 15 10-25 18.59 85.94TMW-3 97.76 98.00 20 10 10-20 15.21 82.79 Notes:Depth to groundwater measurements collected by H&H on August 30, 2022.Elevations are approximate and are referenced to an arbitrary datum of 100 ft at TMW-1. TMW = temporary monitoring well; ft bgs = feet below ground surface; TOC = top of casinghttps://harthick.sharepoint.com/sites/MasterFiles-1/Shared Documents/AAA-Master Projects/Boulevard Realty Estate Advisors (BOU)/BOU-024 4220 S. Tryon St/Phase II ESA/Tables/Data Tables_Broadstone Yancey.xlsx11/7/2022Table 2 (Page 1 of 1)Hart & Hickman, PC Table 3Summary of Groundwater Analytical DataFormer Service Distributing Co.Charlotte, North CarolinaH&H Job No. BOU-024Evaluation AreaSample IDDateUnitsVOCs (8260D)Acetone5.17NA3.11 JNA3.39 J--6,000 NE NECarbon Disulfide0.226 JNA<0.150NA<0.150--700250.01,000SVOCs (8270E)ALL BDLNAALL BDLNAALL BDL--------Metals (6020/7470)UnfilteredFilteredUnfilteredFilteredUnfilteredFilteredArsenic<0.297 <0.2970.401 JB 0.397 JB 0.394 JB 0.335 JB 10 NE NEBarium263 153 293 227 308 227 700 NE NECadmium<0.350 <0.350 <0.350 <0.350 <0.350 <0.3502NENEChromium 13.21.1715.1<0.34628.5<0.34610 NE NELead0.647 J<0.2640.289 J<0.2640.268 J<0.26415 NE NESelenium<0.703 <0.703 <0.703 <0.703 <0.703 <0.70320 NE NESilver<0.0570 <0.0570 <0.0570 <0.0570 <0.0570 <0.057020 NE NEMercury<0.00013 <0.00013 <0.00013 <0.00013 <0.00013 <0.000131 0.18 0.75Trubidity (NTU)44.7NM150NM150NM ---- --Notes:1) North Carolina Department of Environmental Quality (DEQ) 15A NCAC 02L.0202 Groundwater Standards (2L Standards) dated April 2022.2) DEQ Division of Waste Management (DWM) Vapor Intrusion Groundwater Screening Levels (GWSLs) dated July 2022.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.Aside from metals, only those compounds detected in at least one sample are shown in the table above.Bold values exceed the 2L Standard.NTU = nephelometric turbidity units; -- = not applicable; BDL = below the laboratory method detection limits; NA = not analyzed; NM = not measuredB = Compound was detected in the laboratory method blank. J = Compound was detected above the laboratory method detection limit, but below the laboratory reporting limit resulting in a laboratory estimated concentration. 2L Standards (1) Residential GWSLs (2)Non-Residential GWSLs (2)Screening Criteria µg/LDowngradient of Auto Repair ShopTMW-1 TMW-2/TMW-DUP8/30/2022Oil/Water Separatorhttps://harthick.sharepoint.com/sites/MasterFiles‐1/Shared Documents/AAA‐Master Projects/Boulevard Realty Estate Advisors (BOU)/BOU‐024 4220 S. Tryon St/Phase II ESA/Tables/Data Tables_Broadstone Yancey11/14/2022Table 3 (Page 1 of 1)Hart & Hickman, PC Table 4 Summary of Soil Gas Analytical DataFormer Service Distributing Co.Charlotte, North CarolinaH&H Job No. BOU-024Evaluation AreaSample IDSG-1 SG-3 SG-4 SG-5 SG-6 SG-7 SG-8Sample Date8/30/2022Sample Type UnitsVOCs (TO-15)1,2,4-Trimethylbenzene7.394284177.4928.2 J1,1708662,1802,5204205,3001,2-Dichloropropane<0.205<0.205<0.205<0.205<4.10<4.101.26 J1.22 J1.83 J253301,3,5-Trimethylbenzene2.12 J1261262.20 J10.9 J1132895925784205,3001,3-Butadiene7.3219.119.28.12<6.53<6.531516163.1412-Butanone (MEK)7.636.656.844.89<4.4864.61.73.11635,000440,0002-Hexanone<0.28514.414.4<0.285<5.71<5.71<0.285<0.285182102,6002-Propanol2.52 JB1.23 JB1.20 JB2.29 JB16.9 J<2.781.42 JB3.44 JB2.02 JB1,40018,0004-Ethyltoluene3.152262253.7715.6 J740362948919NENE4-Methyl-2-pentanone (MIBK)1.45 J26.927.00.643 J137<2.42<0.1216.65221,000260,000Acetone35.125.025.036.2365<4.049.2721.847.6NENEBenzene4.9262.161.83.2429.5 J5,90010612112312160Carbon disulfide42.434834922.0<1.224967.51 B5.64 JB2344,90061,000Chlorobenzene<0.107<0.107<0.1071.52 J<2.14<2.14<0.107<0.107<0.1073504,400Chloroform11.9214209<0.0864<1.73<1.739.702.9<0.08644.153Chloromethane<0.06734.775.23<0.0673<1.34<1.34<0.0673<0.0673<0.06736307,900Cyclohexane7.0715.915.427.4<3.223,650169.21642,000530,000Ethylbenzene5.583513498.6185.413,2007231,17094037490Methyl-tert-butyl ether<0.0336<0.0336<0.0336<0.0336<0.6733,050<0.0336<0.0336293604,700Methylene Chloride1.71 J2.002.051.11 J<9.75<9.75<0.4890.913 J<0.4893,40053,000Naphthalene1.82 J2.61 J2.65<0.183<3.6676.55.1<0.183 <0.1832.8 36Heptane7.2134.334.24.24<2.862,97010153.241.12,80035,000n-Hexane8.7620.020.17.62<0.9434,72043.018.838.14,90061,000Xylene (total)29.11,5401,56037.33445,7102,8205,3504,2307008,800Propylene67.03083051762671,31012610234321,000260,000Styrene0.737 J5.905.950.486 J<2.48<2.481.77 J5.228.27,00088,000Tetrachloroethene2.94 J<0.181<0.181<0.181<3.62<3.62<0.1813.981.54 J2803,500Tetrahydrofuran<0.107<0.107<0.107<0.107<2.14<2.14<0.1072.8<0.10714,000180,000Toluene3371,0601,05030.43942,3901,700<0.0901<0.090135,000440,000Trichlorofluoromethane2.50 J<0.130<0.1302.70 J9.21 J<2.60<0.130<0.130<0.130NENENotes:1) North Carolina Department of Environmental Quality (DEQ) Vapor Intrusion Sub-Slab & Exterior Soil Gas Screening Levels (SGSLs) dated July 2022 and based on a TCR of 1x10-6 and a THQ of 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 table above.Bold values indicate an exceedance of Residential SGSLs. Underlined values indicate an exceedance of Non-Residential SGSLs. VOCs = volatile organic compounds; NE = not established; TCR = Target Cancer Risk; THQ = Target Hazrd QuotientJ = 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.µg/m3Residential SGSLs (1)Non-Residential SGSLs (1)Screening CriteriaSG-2/SG-DUPProposed Building Footprint8/31/20228/30/2022Exterior Soil Gas https://harthick.sharepoint.com/sites/MasterFiles‐1/Shared Documents/AAA‐Master Projects/Boulevard Realty Estate Advisors (BOU)/BOU‐024 4220 S. Tryon St/Phase II ESA/Tables/Data Tables_Broadstone Yancey.xlsx11/7/2022Table 4 (Page 1 of 1)Hart & Hickman, PC REVISION NO. 0 JOB NO. BOU-024 DATE: 11-8-22 FIGURE NO. 4 FORMER SERVICE DISTRIBUTING CO.S. TRYON STREET AND ORCHARD CIRCLE CHARLOTTE, NORTH CAROLINA SAMPLE LOCATION MAP LEGEND SITE PROPERTY BOUNDARY PARCEL BOUNDARY FORMER UST FORMER CAR WASH DRAIN OIL-WATER SEPARATOR PROPOSED BUILDING FOOTPRINT SOIL BORING LOCATION CO-LOCATED SOIL BORING ANDGROUNDWATER MONITORING WELL SOIL GAS MONITORING POINT LOCATION 2923 South Tryon Street-Suite 100Charlotte, North Carolina 28203704-586-0007(p) 704-586-0373(f)License # C-1269 / #C-245 Geology NOTES: 1. PARCEL DATA AND AERIAL IMAGERY OBTAINED FROMMECKLENBURG COUNTY GIS (2022). 2. UST = UNDERGROUND STORAGE TANK OR C H A R D C I R C L E PET E R S O N D R I V E S. TRYON STREETSG-1 SG-2 SG-3 SG-4 SG-5 SG-6 SG-7 SG-8 SB-10 SB-9 SB-8 SB-7 SB-6 SB-5 SB-4 TMW-1/SB-1 TMW-2/SB-2 TMW-3/SB-3 S:\AAA-Master Projects\Boulevard Realty Estate Advisors (BOU)\BOU-024 4220 S. Tryon St\Brownfields Application\Figures\BOU-024 Site Map 110822.dwg, FIG 4, 11/8/2022 2:03:32 PM, sperry Appendix B Brownfields Property Receptor Survey Template Form North Carolina Department of Environmental Quality Division of Waste Management Brownfields Program Site: Address: City: County: Brownfields Project Number: Date Property and Building Characteristics a. Provide occupancy and use information. c. Describe the foundation construction. Include details on type, floor construction, and depth below grade. e. Are any subslab ventilation systems or moisture barriers in place? If so, please provide details. NASize of Property (acres) % of property that is wooded/brush d. Describe the HVAC system in the building. Include available details on type, equipment location, source of air return, and design considerations (e.g. positive pressure?). BROWNFIELDS PROPERTY RECEPTOR SURVEY This form was created to clarify and simplify preparing a receptor survey for a brownfield site. Please provide the information requested below. Distances are measured from the site property boundary unless otherwise indicated by the DEQ Brownfield’s Project Manager (PM). Current Usage Proposed UsageSurface Conditions % of property that is grassed areas % of property that is agricultural crops % of property that is paved If an existing building is on-site, please respond to the following. Information can be provided on additional sheets as needed. If numerous buildings are on-site, consult with your PM as only information on specific buildings may be needed. b. Describe the construction of the builidng including materials (e.g. wood frame, block), type and size of openings (e.g. windows, bay doors), and height (number of stories). % of property that is covered by buildings Rev. 09/2015 Page 1 of 3 North Carolina Department of Environmental Quality Division of Waste Management Brownfields Program Surrounding Property Land Use North South East West Utilities Is there a septic system on-site? (Y or N) _________ Please provide the utility providers for the subject property a. Natural Gas ___________________________ b. Sewer ___________________________ c. Electricity ___________________________ d. Other __________________________ For surrounding properties, please complete the following table with available information. Zoning/Land Use Proposed Usage Current Use/Occupant DirectionDistance (ft)Address Please provide information on the following land uses in the vicinity of the subject site, including a map of the surrounding areas. If specific receptors are present, please provide addresses of the facilities. For the subject property, please provide a map of known buried utilites. If available, include depth to top, construction material, and diameter of the utilities. In addition, please provide the following information on utilty providers. If additional assessment is required, the public utility locators should be contacted. This information can then be added to a site map. Y/N * Is a school or daycare center within 1,000 ft of the Property? Specific Land Uses of Interest Y/N * * If numerous facilities of interest are present, their locations can be placed on a map in lieu of providing specific addresses. Distance (ft) * If yes, please provide a map or detailed information (distance, direction, depth) of the utility in correlation with the subject property. Is a water line main within 100 ft of Property boundary? Is a natural gas line main within 100 ft of the Property boundary? Is a buried telephone/ cable main within 100 ft of the Property boundary? Is a septic system leach field within 500 ft of the Property boundary? Direction Is there a basement within 1,000 ft of the Property Is there a residence within 1,000 ft of the Property? Utility/Potential Receptor Is a buried electrical cable main within 100 ft of Property boundary? Is a storm water pipe within 100 ft of the Property boundary? Is a sanitary sewer within 100 ft of the Property boundary? Rev. 09/2015 Page 2 of 3 North Carolina Department of Environmental Quality Division of Waste Management Brownfields Program Water Supply What is the potable water supply for the property? Public ______ Private ______ Surface Water & Wetlands Are there surface water features on the property? (If yes, please complete a. to d.) Provide Information regarding Surface Water and Wetlands Distance (ft)Direction Address a. Is the water body naturally developed or man-made? Y/NWater Supply Wells Please provide the following information regarding water supply wells in the vicinity of the Property. At a minimum, a windshield survey within 1,500 ft of the property boundaries should be completed to determine if water supply or irrigation wells may be present. Information from applicable databases can and should be utilized; however, should not be utilized in lieu of the windshield survey. If multiple wells are present within the requested radius, please provide a map of the well locations. If needed, please attach a separate table to list all wells. Please note, the PM may opt for a more extensive water supply well survey if needed. If Private, please provide details of the water supply source (i.e. well location, well construction, etc). If public, please include the water providers name. The purpose of this section is to provide information on the water supply for the site and surrounding areas. Is a public water supply well within 1 mile of the Property boundary? Is a private water supply well within 1,500 ft of the Property bd?Is an irrigation well within 1,500 ft of the Property boundary? Response/Comments The purpose of this section is to provide information on the presence of surface waters and/or wetlands on, or in the vicinity of the Property. b. List the uses of the water body. c. What is the source of the water for the water body? d. What is the nature of the bottom of the water body (e.g., rocky or concrete bottom, drainage ways or impoundments) If no on-site surface water features, what is the nearest surface water body? Are there any wetlands present on the property? If no wetlands on-site, are wetlands suspected on adjoining properties? Rev. 09/2015 Page 3 of 3