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HomeMy WebLinkAbout20026_Kaiser Fluids_Final Grade Sampling WP_R1- signed 20230615 Via Email June 15, 2023 NCDEQ – Division of Waste Management Brownfields Redevelopment Section 1646 Mail Service Center Raleigh, North Carolina 27699-1646 Attn: Ms. Carolyn Minnich Re: Final Grade Soil Sampling Work Plan – Revision 1 Kaiser Fluids Tech II Former Henkel Chemical Corporation 4100 Raleigh Street Charlotte, North Carolina Brownfields Project No. 20026-16-060 H&H Job No. T&U-002 Dear Carolyn: On behalf of Trailhead 4100 Owner, LLC, please find the enclosed Final Grade Soil Sampling Work Plan – Revision 1 prepared for the former Henkel Chemical Corporation portion of the Kaiser Fluids Tech II Brownfields property for your review and approval. Should you have any questions or need additional information, please do not hesitate to contact us at (704) 586-0007. Sincerely, Hart & Hickman, PC Brett Lawrence, PG Senior Project Geologist Enclosure: 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 the Brownfields Property, exterior soil gas assessment is required within all proposed structure footprints.  2. ALL properties require groundwater data (VOCs, SVOCs and RCRA Metals) from a minimum of three sample locations, depth to groundwater and a resulting potentiometric map.  3. Soil shall be assessed based on areas of concern and redevelopment plans and across the depth interval of the cut/grading. Work Plan and Report Checklist  Version 3 March 2023  Environmental Site Assessment Work Plan Checklist Reviewed by (Name): _______________________________________ 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 Completed by (Name): _______________________________________ Work Plan and Report Checklist  Version 3 March 2023   Monitoring wells (equilibration time prior to development and equilibration post well development should be 24 hours, per EPA standard protocols).  Vapor: a. Sub slab vapor with minimally invasive points (e.g. Vapor Pins): Manufacturer’s guidelines generally suggest 20 minutes may be sufficient with an airtight cap installed; or b. 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 cap in 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 gas locations ☐ 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 ☐ 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 ☐ 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 s:\aaa-master projects\third & urban\t&u-002 4100 raleigh street (former henkel)\final grade soil sampling\work plan\revision-1 to deq\final grade soil sampling work plan_rev 1.doc Final Grade Soil Sampling Work Plan – Revision 1 Kaiser Fluids Tech II Former Henkel Chemical Corporation 4100 Raleigh Street Charlotte, North Carolina H&H Job No. T&U-002 Table of Contents 1.0 Introduction and Background ...............................................................................................1 2.0 Final Grade Assessment Activities ........................................................................................4 2.1 Final Grade Soil Sampling Activities ....................................................................................4 2.2 Quality Assurance/Quality Control .......................................................................................6 2.3 Investigation Derived Waste .................................................................................................7 2.4 Reporting ...............................................................................................................................7 List of Tables Table 1 Final Grade Soil Sample Summary List of Figures Figure 1 Site Location Map Figure 2 Site and Proposed Final Grade Soil Sample Location Map List of Appendices Appendix A Attachment 1 – Work Plan Approval Signature Page Appendix B Site Plan ii s:\aaa-master projects\third & urban\t&u-002 4100 raleigh street (former henkel)\final grade soil sampling\work plan\revision-1 to deq\final grade soil sampling work plan_rev 1.doc Project Contacts Mr. Hank Farmer Trailhead 4100 Owner, LLC 1831 Peachtree Road, Suite A Atlanta, GA 30309 (404) 312-4743 (direct) hankf@thirdandurban.com Mr. Brett Lawrence, PG Hart & Hickman, PC 2923 S. Tryon Street, Suite 100 Charlotte, NC 28203 (704) 887-4601 (office) (704) 400-5467 (mobile) blawrence@harthickman.com Ms. Carolyn Minnich NCDEQ – Brownfields Redevelopment Section 1646 Mail Service Center Raleigh, NC 27699 (704) 661-0880 (direct) carolyn.minnich@deq.nc.gov 1 s:\aaa-master projects\third & urban\t&u-002 4100 raleigh street (former henkel)\final grade soil sampling\work plan\revision-1 to deq\final grade soil sampling work plan_rev 1.doc Final Grade Soil Sampling Work Plan – Revision 1 Kaiser Fluids Tech II Former Henkel Chemical Corporation 4100 Raleigh Street Charlotte, North Carolina H&H Job No. T&U-002 1.0 Introduction and Background On behalf of Trailhead 4100 Owner, LLC (Prospective Developer or PD), Hart & Hickman, P.C. (H&H) has prepared this Final Grade Soil Sampling Work Plan (Work Plan) for the former Henkel Chemical Corporation portion of the Kaiser Fluids Tech II Brownfields property (Brownfields Project No. 20026-16-060) located at 4100 Raleigh Street in Charlotte, Mecklenburg County, North Carolina (Site). The Site consists of an approximately 3.8-acre parcel (Parcel ID No. 09107204) of land that is being redeveloped for various commercial purposes including retail, restaurants, art galleries, music venues, breweries, and/or co‐working spaces. A Site location map is provided as Figure 1. The Site was initially occupied by Standard Chemical between approximately 1953 and the early 1960s, and was used for the production of textile manufacturing chemicals. Henkel Chemical Corporation, a subsidiary of Standard Chemical, occupied the Site between the early 1960s and early 1990s. Henkel Chemical also formulated textile manufacturing chemicals, including various fiber and yarn lubricants, dyeing and finishing auxiliaries, and assistants. Henkel Chemical vacated the Site in the early 1990s, and the Site remained vacant until 1998. Between the late 1990s and 2021, the Site was occupied by several building supply companies, a recycling company, an art studio, and a real estate development company. The Site and north adjacent property (former Kaiser Fluids Technologies; 530 E. Sugar Creek Road) received eligibility for entry into the North Carolina Department of Environmental Quality (NC DEQ) Brownfields Program in June 2017. H&H and the Prospective Developer at the time (Sugar Creek Station, LLC) discussed data gaps with DEQ Brownfields personnel and subsequently completed two phases of assessment activities in accordance with the Brownfields 2 s:\aaa-master projects\third & urban\t&u-002 4100 raleigh street (former henkel)\final grade soil sampling\work plan\revision-1 to deq\final grade soil sampling work plan_rev 1.doc Program in October 2018 and February 2019. The assessment activities included collection of soil, groundwater, exterior and sub-slab soil gas, indoor air, and building material samples for laboratory analysis. A brief summary of the results of the previous assessment activities is provided below. Groundwater Assessment The results of previous assessment indicated the presence of 1,4-dioxane, pentachlorophenol or PCP, and chromium (total) in groundwater in the northern portion of the Site at concentrations above the North Carolina 2L Groundwater Quality Standards (2L Standards). Please note that mercury was reported during the October 2018 sampling event in one sample (MW-3) at a concentration above the 2L Standard and vapor intrusion screening level. However, mercury was not detected in MW-3 or its duplicate sample during the February 2019 sampling event. Vapor Intrusion Assessment The results of previous vapor intrusion assessment activities indicated the chlorinated volatile organic compound (VOC) tetrachloroethylene or PCE was detected in one exterior soil gas sample collected from the west-central portion of the Site at a concentration above the DEQ Residential Soil Gas Screening Level (SGSL) but below the Non-Residential SGSL. In addition, the petroleum-related compound xylenes (m,p- and o-) were detected in multiple exterior soil gas samples at concentrations above the Residential SGSLs but below the Non-Residential SGSLs. The results of cumulative risk calculations for the exterior and sub-slab soil gas samples indicate acceptable carcinogenic and non-carcinogenic risks under both residential and non-residential use scenarios. The results of indoor air samples collected from the Site building did not indicate mercury was detected in any of the samples at concentrations above laboratory method detection limits. 3 s:\aaa-master projects\third & urban\t&u-002 4100 raleigh street (former henkel)\final grade soil sampling\work plan\revision-1 to deq\final grade soil sampling work plan_rev 1.doc Soil Assessment and Cleanup The results of previous assessment activities indicated the presence of polychlorinated biphenyls (PCBs) in soil in two distinct areas of the Site (former catch basin and former laboratory), and on a portion of a concrete building slab in the former boiler room of the existing warehouse. PCBs were detected at concentrations above the EPA’s Toxic Substances Control Act (TSCA) unrestricted cleanup level of 1 milligram per kilogram (mg/kg). The “Areas of Known PCB Contamination” are depicted on the Brownfields plat. To comply with the PCB cleanup requirements specified in the EPA’s TSCA regulations established in 40 CFR Part 761, H&H completed bulk PCB remediation waste cleanup activities at the Site between May 2022 and July 2022. The primary goal for the cleanup was to address bulk PCB remediation waste at the Site to prevent unacceptable health risks to future users of the Site in accordance with 40 CFR 761.61(b) for a performance-based cleanup and disposal of bulk PCB remediation waste under TSCA. The cleanup activities included the removal and off-Site disposal of 539.82 tons of soil, concrete, and debris to a TSCA-approved chemical waste landfill (TSCA landfill) located in Emelle, Alabama. Analytical results of 161 final verification samples collected in accordance with 40 CFR 761 Subpart O indicate that the cleanup objective was achieved at each cleanup area and no further action is required at the Site to meet TSCA requirements. Since the remaining PCB impacts are below the TSCA unrestricted cleanup level of 1 mg/kg following the performance- based cleanup, the remediated areas are authorized for use under 40 CFR 761.30(u) and will be managed in accordance with the DEQ-approved Environmental Management Plan (EMP) dated May 3, 2019. A Notice of Brownfields Property, which includes the Brownfields Agreement, land use restrictions, and Brownfields plat was recorded for the Site at the Mecklenburg County Register of Deeds on July 15, 2021. Redevelopment activities at the Site are nearing completion, and final grade elevations have been established across the Site. In accordance with the DEQ-approved EMP, final grade soil 4 s:\aaa-master projects\third & urban\t&u-002 4100 raleigh street (former henkel)\final grade soil sampling\work plan\revision-1 to deq\final grade soil sampling work plan_rev 1.doc sampling will be conducted at the Site following redevelopment in areas that are not covered with buildings, pavement, or permanent hardscape. The purpose for the final grade soil sampling is to evaluate potential direct exposure risks to future Site occupants and workers from shallow soil at the Site. A DEQ Brownfields Redevelopment Section – Assessment Work Plan Approval Signature Page is included as Appendix A. The proposed final grade soil sampling activities are outlined in the following sections. 2.0 Final Grade Assessment Activities Exposed soil at the Site is limited to landscaped and grassy areas surrounding the Site buildings, grassy areas along the Site perimeter, and in landscaped parking lot islands. H&H will collect shallow soil samples for laboratory analysis in representative unpaved areas to evaluate the potential for impacts. The Site redevelopment plan and associated unpaved areas are shown in Figure 2 and a copy of the Site plan is provided in Appendix B. The soil sampling activities will be conducted in general accordance with the DEQ Inactive Hazardous Sites Branch (IHSB) Guidelines for Assessment and Cleanup of Contaminated Sites (Guidelines) dated September 2022, the most recent versions of U.S. Environmental Protection Agency (EPA) Region IV Laboratory Services and Applied Science Division (LSASD) Field Branches Quality System and Technical Procedures guidance, and the enclosed DEQ Brownfields Redevelopment Section’s Minimum Requirements Checklist dated March 2023. 2.1 Final Grade Soil Sampling Activities Based on review of the Site plan and observations at the Site, unpaved portions of the Site have been divided into eight (8) final grade evaluation areas (FG-1 through FG-8). Four to five shallow soil borings will be advanced within each final grade evaluation area. Soil sample aliquots collected from each evaluation area will be homogenized to form one composite soil sample to represent shallow soil conditions in that evaluation area. The final grade evaluation areas and approximate locations of the aliquot soil borings are presented on Figure 2 and sample details are provided in Table 1. 5 s:\aaa-master projects\third & urban\t&u-002 4100 raleigh street (former henkel)\final grade soil sampling\work plan\revision-1 to deq\final grade soil sampling work plan_rev 1.doc Aliquot soil borings will be advanced from the surface to approximately two feet below the ground surface (ft bgs) using a decontaminated stainless-steel hand auger. During boring advancement, continuous soil samples will be collected from the center of the hand auger bucket. Soil samples will be described for lithologic purposes, observed for obvious evidence of staining and unusual odors. A portion of the soil sample will be allowed to volatilize and will be field screened for the presence of volatile organic vapors using a calibrated photoionization detector. The remaining portions of the aliquot soil samples will be homogenized to form a composite soil sample representative of each evaluation area for a total of eight (8) composite final grade soil samples. Soil samples selected for laboratory analysis will be collected directly into laboratory supplied glassware, 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 within 48 hours of sample collection for the analyses outlined below. Composite soil samples will be submitted for laboratory analysis of semi-volatile organic compounds (SVOCs) by EPA Method 8270, polychlorinated biphenyls (PCBs) by EPA method 8082, and Resource Conservation and Recovery Act (RCRA) metals plus hexavalent chromium by EPA Methods 6020/7471/7199. In addition, one grab sample will be collected from an undisturbed portion of an aliquot soil sample collected in each evaluation area for a total of eight (8) grab soil samples that will be submitted for analysis of VOCs by EPA Method 8260. The grab samples collected for VOC analysis will be selected based on results of field screening and collected from the aliquot exhibiting the highest likelihood for impact in each final grade evaluation area. If field screening results do not identify obvious presence of impacts in an aliquot soil sample, the final grade evaluation area grab samples will be collected from the 1 to 2 ft bgs sample interval from a randomly selected aliquot soil boring in each evaluation area. Following sample collection, the soil borings will be properly abandoned, and the ground will be restored to match the surrounding surface. 6 s:\aaa-master projects\third & urban\t&u-002 4100 raleigh street (former henkel)\final grade soil sampling\work plan\revision-1 to deq\final grade soil sampling work plan_rev 1.doc 2.2 Quality Assurance/Quality Control Non-dedicated equipment and tools will be decontaminated prior to use at each boring location. To evaluate the reproducibility of the sample results, H&H will collect one duplicate soil sample per day of sampling that will be submitted for the same analyses as the parent soil sample. 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 calibration, 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. H&H will request that laboratory method detection limits for each analyte be at or below the DEQ IHSB Residential Preliminary Soil Remediation Goals (PSRGs), 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). Adequate sample volume will be collected for the laboratory to perform MS/MSD analyses. The laboratory analytical data report and QA package for the final grade soil 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 requested 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. 7 s:\aaa-master projects\third & urban\t&u-002 4100 raleigh street (former henkel)\final grade soil sampling\work plan\revision-1 to deq\final grade soil sampling work plan_rev 1.doc 2.3 Investigation Derived Waste Based on previous assessment data and the results of cleanup activities performed at the Site, hazardous waste (listed or characteristic) is not expected to be encountered during the final grade soil sampling event. Therefore, investigation derived waste (IDW) generated during the final grade assessment activities will be thin spread on-Site. However, if significant impacts are suspected based on field screening results, the soil cuttings will be containerized in a 55-gallon drum and staged on-Site pending analytical results of a composite IDW sample. Based on laboratory analytical results of IDW sample, the drum will be transported off-Site to a suitable facility for disposal. IDW generated during the proposed assessment activities will be managed in general accordance with DEQ IHSB Guidelines. 2.4 Reporting Following completion of the final grade soil assessment for the Site, a report which describes the methods and results of the final grade soil sampling activities will be prepared and submitted to DEQ. The report will include a title page, description of field activities, field screening results, a tabular summary of the analytical results in comparison to the PSRGs, risk calculations, boring logs in tabular form (will include boring IDs, field screening/PID results, and soil descriptions), figures depicting the sample locations, laboratory analytical reports and chain of custody records, field notes, a discussion of QA/QC data, and conclusions based upon our assessment activities. The report will be sealed by a North Carolina Professional Engineer (PE) or Professional Geologist (PG) and the firm PE/PG numbers will be provided. Table Table 1 Proposed Sample Summary - Revision 1Kaiser Fluids Tech II -Henkel Chemical CorporationCharlotte, North CarolinaBrownfields Project No. 20026-16-060H&H Job No. T&U.002FG-1 5 0-2XXXXXFG-2 4 0-2XXXXXFG-3 4 0-2XXXXXFG-4 5 0-2XXXXXFG-5Building 4 (Northern Portion of Site)50-2XXXXXFG-6Building 1 (Northeast Portion of Site)50-2XXXXXFG-7Building 3 (Southeast Portion of Site)50-2XXXXXFG-8Building 2 (Southern Portion of Site)50-2XXXXXQA/QC FG-DUP Duplicate 5 0-2XXXXXNotes:Laboratory analytical method is shown in parentheses.*VOC grab samples will be collected from the 1-2 ft bgs interval.One duplicate sample will be collected per day of sampling activities.VOCs = volatile organic compounds; SVOCs = semi-volatile organic compoundsRCRA = Resource Conservation and Recovery Act; ft bgs = feet below the surfaceSample ObjectiveShallow Soil Exposure Risk EvaluationHexavalent Chromium(7199)RCRA Metals (6020/7471) SVOCs (8270)PCBs (8082)Parking Lot (Western Portion of Site)Sample IDComposite Sample Location AreaNumber of Aliquot Borings Sample Depth (ft bgs)*VOCs (8260)https://harthick.sharepoint.com/sites/MasterFiles-1/Shared Documents/AAA-Master Projects/Third & Urban/T&U-002 4100 Raleigh Street (Former Henkel)/Final Grade Soil Sampling/Work Plan/Revision-1 to DEQ/Proposed FGSS Sample Summary_Rev 16/15/2023Table 1Hart & Hickman, PC Figures 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 KAISER FLUIDS TECH II (FORMER HENKEL CHEMICAL)4100 RALEIGH STREETCHARLOTTE, NORTH CAROLINA DATE: 5-15-23 JOB NO: T&U-002 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\Third & Urban\T&U-002 4100 Raleigh Street (Former Henkel)\Final Grade Soil Sampling\Figures\Figure-1.mxdN U.S.G.S. QUADRANGLE MAP DERITA, NORTH CAROLINA AND CHARLOTTE EAST, NORTH CAROLINA 2022 QUADRANGLE7.5 MINUTE SERIES (TOPOGRAPHIC) FG-4 FG-1 FG-8 FG-7 FG-6 FG-5 FG-2 FG-3 REVISION NO. 1 JOB NO. T&U-002 DATE: 6-15-23 FIGURE NO. 2 KAISER FLUIDS TECH II (FORMER HENKEL CHEMICAL) 4100 RALEIGH STREET CHARLOTTE, NORTH CAROLINA PROPOSED FINAL GRADE SOIL SAMPLE LOCATION MAP LEGEND SITE PROPERTY BOUNDARY PARCEL BOUNDARY PROPOSED BUILDING FOOTPRINT PROPOSED LANDSCAPE AREA PROPOSED FINAL GRADE SOIL SAMPLE ALIQUOT LOCATION 2923 South Tryon Street-Suite 100 Charlotte, North Carolina 28203 704-586-0007(p) 704-586-0373(f) License # C-1269 / #C-245 Geology NOTES: 1. PARCEL DATA OBTAINED FROM NCONE MAP, 2023. 2. AERIAL IMAGERY OBTAINED FROM MECKLENBURG COUNTY GIS, 2023.E. SUGAR CREEK ROAD RALEIGH STRE E T BEARWO O D A V E N U E BUILDING 1 BUILDING 2 BUILDING 3 BUILDING 4 S:\AAA-Master Projects\Third & Urban\T&U-002 4100 Raleigh Street (Former Henkel)\Final Grade Soil Sampling\Figures\T&U_FGSS_230523.dwg, FIG 3, 6/15/2023 11:09:05 AM, bwest Appendix A Attachment 1 – Work Plan Approval Signature Page 06/15/2023 Appendix B Site Plan