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Home My WebLink About23080_Almont Shipping II_FGSWP_20230321Geosyntec consultants Geosyntec Consultants of NC, PC Ms. Sharon Eckard Eastern District Supervisor, Brownfields Program NCDEQ - Division of Waste Management 217 W Jones Street Raleigh, NC 27603 Subject: Work Plan for Final Grade Sampling Geosyntec Consultants of NC, P.C. 314 Walnut Street, Suite 200 Wilmington, NC 28401 PH 910.372.6402 www.geosyntec.com 21 March 2023 Almont Shipping II 19 & 41 Harnett Street, Wilmington, North Carolina (New Hanover County Parcel No. R04716-001-026-000, R04716-001-030-000, & R04712-002-001- 000) NCBP Project No. 23080-19-065 Geosyntec Project No. GN7035 Dear Ms. Eckard: On behalf of Wilmington Waterfront Property Owner, LLC (Prospective Developer), Geosyntec Consultants of NC, P.C. (Geosyntec) is pleased to submit the enclosed Work Plan for Final Grade Sampling (Work Plan) for the above -referenced property for your review and approval. Please do not hesitate to contact Abigail Wesley (910-372-6407 or abby.wesley@geosyntec.com) if you have any questions. Sincerely, Abigail Wesley, P.G. (Nq Kaitlyn Rhonehouse, P.E. (FL, NC, VA) Geologist Principal Engineer Copies to: William Edwards, Sean Curtin — Kettler Enterprises, Inc. Mary Katherine Stukes, Laura Boorman Truesdale — Moore & VanAllen Prepared for Wilmington Waterfront Property Owner, LLC 8255 Greensboro Drive, Suite 200 McLean, Virginia 22102 WORK PLAN FOR FINAL GRADE SAMPLING New Hanover County Parcel No. R04716-001-026-000, R04716-001-030-000 & R04712-002-001-000 19 & 41 Harnett Street, Wilmington, North Carolina Brownfields Project: Almont Shipping II NCBP No. 23080-19-065 Prepared by GeosyntecO' consultants Geosyntec Consultants of NC, P.C. Geosyntec Consultants of NC, P.C. 314 Walnut Street, Suite 200 Wilmington, North Carolina 28401 Project Number GN7035 March 2023 CERTIFICATION PAGE WORK PLAN FOR FINAL GRADE SAMPLING WORK PLN ALMONT SHIPPING II 19 AND 41 HARNETT STREET WILMINGTON, NORTH CAROLINA BROWNFIELDS PROJECT NO.23080-19-065 Prepared by: Abigail Wesley P.G. (NQ Geologist Reviewed by: Kaitlyn Rhonehouse P.E. (FL, NC, VA) Principal Engineer PROFESSIONAL GEOLOGIST SIGNATURE I, Abigail Wesley, a Licensed Geologist for Geosyntec Consultants of NC, P.C., do certify that the information in this report is correct and accurate to the best of my knowledge. Geosyntec Consultants of NC. P.C. is licensed to practice engineering in North Carolina. The certification number (Firm's License Number) is C-3500. Geosyntec Consultants of NC. P.C. is licensed to practice geology in North Carolina. The certification number (Firm's License Number) is C-295. N" N C A r �2 x r Abigail Wesley, P.G. Professional Geologist North Carolina P.G. License No. 2823 Expiration Date: 30 June 2023 Geosyntec Consultants of NC, PC 314 Walnut Street, Suite 200 Wilmington, NC 28401 Telephone: 910.3 72.6407 Geosyntec consultants Geosyntec Consultants of NC, P.C. TABLE OF CONTENTS 1. INTRODUCTION................................................................................................................... 1 1.1. Site Environmental History.............................................................................................. 1 1.2. Work Plan Objectives....................................................................................................... 2 2. SCOPE OF WORK................................................................................................................. 2 3. SAMPLING METHODOLOGY............................................................................................. 2 3.1. Health and Safety Planning and Utility Clearing............................................................. 2 3.2. Soil Boring Advancement and Sampling......................................................................... 3 3.3. Decontamination.............................................................................................................. 3 3.4. Soil Boring Locating........................................................................................................ 3 3.5. Soil Boring Abandonment................................................................................................ 4 4. LABORATORY ANALYSIS................................................................................................. 4 4.1. Laboratory Analysis......................................................................................................... 4 4.2. Laboratory Reporting....................................................................................................... 4 5. QUALITY ASSURANCE/QUALITY CONTROL................................................................ 4 5.1. Field and Laboratory Procedure QA/QC......................................................................... 4 5.2. Chain of Custody QA/QC................................................................................................ 4 6. INVESTIGATION DERIVED WASTE (IDW) MANAGEMENT ....................................... 5 7. REPORTING...........................................................................................................................5 8. REFERENCES........................................................................................................................ 7 LIST OF TABLES Table 1 Proposed Soil Sample Locations and Analysis LIST OF FIGURES Figure 1 Site Location Map Figure 2 Proposed Final Grade Soil Sample Locations GN7035/CAR230035 i March 2023 Geosyntec consultants Geosyntec Consultants of NC, P.C. 1. INTRODUCTION Geosyntec Consultants of NC, P.C. (Geosyntec) is pleased to submit this Work Plan for Final Grade Sampling (Work Plan) on behalf of the Prospective Developer (PD), Wilmington Waterfront Property Owner, LLC, for the Almont Shipping II Brownfields Property (herein referred to as the "Subject Property" or "Site"). The Site is located at 19 and 41 Harnett Street (New Hanover County Parcel IDs: R04716-001-026-000, R04716-001-030-000, and R04712-002- 001, respectively) (Figure 1). The North Carolina Department of Environmental Quality (NCDEQ) approved Wilmington Waterfront Property Owner, LLC's 7 January 2020 Brownfields Property Application (BPA) in an 18 February 2020 Letter of Eligibility (LOE). A Brownfields Agreement (BFA) for the Almont Shipping II property was finalized on 13 January 2023. This work plan serves to outline the final grade soil sampling approach as stipulated in Land Use Restriction (LUR) h of the 2023 BFA. 1.1. Site Environmental History Multiple environmental assessments have been conducted at the Site (associated work plans and reports were submitted to Brownfields Redevelopment Section (BRS; previously North Carolina Brownfields Program [NCBP]) under separate cover). During these assessments, Site soils were sampled, screened against NCDEQ Residential Preliminary Soil Remediation Goals (PSRGs) and evaluated through a risk assessment using the NCDEQ Risk Calculator. The on -site soil (in addition to imported fill used during Site redevelopment) was determined to be suitable for residential use by BRS. Redevelopment activities, under the approved Environmental Management Plan (EMP), began in September 2021 and continue to date. A Redevelopment Summary Report, summarizing on -site redevelopment activities through December 2022, was submitted to BRS in January 2023. Redevelopment is anticipated to conclude in November 2023. The Site is currently being redeveloped for multi -family apartments, retail space, and an associated parking garage. The Site redevelopment strategy incorporates two buildings, defined as Building 1 and Building 2. Each building is further subdivided into five areas, as follows and shown on Figure 2. • Building 1 is the western -most building, and includes subareas Building A, Building B, and Building C. • Building 2 is the eastern -most building, and includes subareas defined as Building D and Building E. Buildings A, B, C, and D include either first floor multi -family use residential or retail spaces. Building E consists of an open/ventilated parking garage with a small, enclosed storage and mechanical space. GN7035/CAR230035 1 March 2023 Geosyntec consultants Geosyntec Consultants of NC, P.C. Soil has been imported to and exported from the Site (per the EMP) to achieve the final grade. The topsoil will reportedly be spread over the surface of native Site soils in areas designated for "Final Grade Vegetation" on Figure 2. 1.2. Work Plan Objectives The scope of work described herein was prepared to meet the following objective: • Collect soil samples to evaluate if soil within the approximate top two feet of non - impervious landscaped areas at the Site poses an unacceptable risk to Site occupants. This Work Plan was prepared in general accordance with the Site's BRS approved EMP and following the BRS Minimum Requirements Checklist for Site Assessment Work Plans and Reports (February 2022). 2. SCOPE OF WORK The scope of work includes the limited assessment of the approximate top two feet of soil in non - impervious areas through the collection of five composite soil samples, as depicted on Figure 2. Composite soil samples, comprised of five aliquots each, will be collected via hand auger borings from five zones (labeled Zone 1 through 5). Soil borings will extend to approximately two feet below ground surface (ft bgs) in each location and soil samples will be collected and analyzed from the soil borings, as described in Section 3.2 and summarized in Table 1. The sampling approach described herein may be conducted in phases to allow for phased occupancy approval for portions of the Site. Notification will be provided to BRS prior to initiating field activities. 3. SAMPLING METHODOLOGY 3.1. Health and Safety Planning and Utility Clearing Prior to the start of work, Geosyntec will prepare a site -specific Health and Safety Task Hazard Analysis in general accordance with the Occupation Safety and Health Administration (OSHA) rules (29 CFR 1910.120). To address potential underground utilities, Geosyntec will contact the North Carolina 811 one -call system a minimum of 72 business hours before beginning the assessment to notify member utilities of the subsurface work. Procedures will generally follow the Operating Procedures as determined by the U.S. Environmental Protection Agency (USEPA) Region IV Science and Ecosystem Support Division (SESD). The most current versions of these operating procedures can be downloaded at: https://www.epa.gov/qualit�/quality-system-and- technical-procedures-sesd-field-branches. Additional media specific procedures are discussed further below. GN7035/CAR230035 2 March 2023 Geosyntec consultants Geosyntec Consultants of NC, P.C. 3.2. Soil Boring Advancement and Sampling Soil borings have been separated into five sample zones (Figure 2 and Table 1). Geosyntec personnel will utilize a decontaminated, stainless -steel hand auger to advance 25 soil borings into the prepared final grade soils to a depth of approximately two ft bgs within landscape areas. Derived soil will be screened for evidence of total volatile organic compounds (VOCs) using a Photoionization Detector (PID). For each of the five composite zones, one discrete grab soil sample will be collected from the boring with the highest field screening results for VOC analysis. Each sample will be collected using laboratory supplied grab sample equipment (i.e., Terra Core® or equivalent). The six discrete grab samples (one from each composite zone plus a laboratory duplicate) will be placed in appropriately labeled laboratory -supplied bottle ware designated for VOC analysis by United States Environmental Protection Agency (EPA) Method 8260. For each of the five composite zones, approximately equal volumes of soil will be collected from each soil boring within the zone. Soil from each group will be homogenized in a decontaminated stainless -steel bowl and placed into laboratory -supplied bottle wares. A total of six composite samples, including a laboratory duplicate, will be submitted for laboratory analysis of semi -volatile organic compounds (SVOC) by EPA Method 8270, the eight Resource Conservation and Recovery Act metals by EPA Method 6010 or 6020 and 7174, and hexavalent chromium by EPA Method 7199. Bottle ware will be labeled with the sample location, date and time, and, placed on wet -ice and submitted to a North Carolina -certified laboratory for analysis following chain -of -custody procedures (Section 5.2). 3.3. Decontamination Disposable equipment will be used as practical. However, as needed, equipment will be decontaminated using an initial water rinse followed by cleaning with Alconox® (or equivalent) and final rinse of distilled water. 3.4. Soil Boring Locating A handheld global positioning software (GPS) unit and field measurements will be used to collect the approximate coordinates of the soil borings. GN7035/CAR230035 3 March 2023 Geosyntec consultants Geosyntec Consultants of NC, P.C. 3.5. Soil Boring Abandonment Following sample collection and locating, soil borings will be abandoned by placing the soil cuttings back into the borings. No soil will be containerized for off -site disposal unless field screening and observations indicate the presence of potential impacts. 4. LABORATORY ANALYSIS 4.1. Laboratory Analysis Following collection, soil samples will be sealed and submitted, under chain of custody procedures (Section 5.2), for laboratory analysis for the analyses presented on Table 1. 4.2. Laboratory Reporting Laboratory reporting limits (RLs) and method detection limits (MDLs) used for methods indicated in Table 1 will meet respective NCDEQ PSRGs (January 2023), to the extent feasible. Concentrations detected between the RL and MDL will be reported as estimated values and flagged in the laboratory analytical report with a "J". Level II Quality Assurance (QA)/Quality Control (QC) will be reported in the analytical report deliverable. The lab will be provided sufficient sample volume for Matrix Spike/ Matrix Spike Duplicate (MS/MSD) analysis. 5. QUALITY ASSURANCE/QUALITY CONTROL 5.1. Field and Laboratory Procedure QA/QC QA/QC will also include the inclusion of a temperature blank in each soil sample cooler shipped to the laboratory. As indicated in Table 1, a blind duplicate soil sample will be collected for laboratory analysis. 5.2. Chain of Custody QA/QC Geosyntec will initiate chain of custodies for soil samples in the field documenting sample collection information including but not limited to: • The Sample Collector's Name • Project Information and Location • Geosyntec Project Manager Contact Information • Sample Identification Number • Date and Time of Sample Collection GN7035/CAR230035 4 March 2023 Geosyntec consultants Geosyntec Consultants of NC, P.C. • Type of Analysis Samples will remain in the custody of Geosyntec until they are ready for shipment. Geosyntec will relinquish the samples and chain of custodies (noting date and time of relinquishment) to the laboratory courier who will sign the chain of custody as receiver (noting date and time again) or to a national shipping company (e.g., FedEx, UPS). If the samples are shipped, the shipping company will not sign the chain of custody. Geosyntec will retain a copy of the chain of custodies signed by the courier. Sample coolers and the chain of custodies will be sealed in an appropriate shipping containeribox and sent to the analytical laboratory used. A representative from the laboratory's sample receiving will sign respective chains of custody verifying receipt of the samples by each respective laboratory location. A copy of fully executed chains of custody will be provided in the final laboratory analytical report deliverable. 6. INVESTIGATION DERIVED WASTE (IDW) MANAGEMENT IDW will be screened at each hand -augured soil boring with a PID. Soil staining and/or odors will be recorded in the field. If visible soil staining and/or odors are detected, IDW will be containerized in labeled 55-gallon steel drums and stored in a designated area of the Site pending disposal based on laboratory results. If no staining and/or odors are observed, soil cuttings will be placed back into the boreholes. 7. REPORTING Upon receipt of laboratory results, Geosyntec will prepare a written report summarizing: (i) the scope of work executed, and sampling methodologies performed; (ii) soil sample laboratory analytical results; (iii) IDW management procedures; and (iv) findings, conclusions and recommendations. Tabulated soil sample results compared to the Residential PSRGs and figures depicting the location of actual sample locations will be included to the report. Analytical results will also be evaluated using the January 2023 (or most recent) version of the NCDEQ Risk Calculator (RC). The report will include Geosyntec's Corporate Professional Engineer (PE)/Professional Geology (PG) License Numbers and will be sealed and signed by the licensed PE or PG who oversaw the work. To meet the development and occupancy schedule, Zone 1 may be sampled, and data provided to BRS prior to Zones 2-5. Geosyntec understands laboratory analytical reports, tabulated/screened data, and RC results can be provided to BRS via email for review ahead of the completion of the full proposed scope of final grade sampling and data analysis proposed herein. A final written report will be provided summarizing the sampling and results of GN7035/CAR230035 5 March 2023 Geosyntec consultants Geosyntec Consultants of NC, P.C. Zones 1 through 5 after receipt of all soil sample results to obtain occupancy for additional areas of the Site. GN7035/CAR230035 6 March 2023 Geosyntec consultants Geosyntec Consultants of NC, P.C. 8. REFERENCES NCDEQ, Brownfields Program. February 2022. Minimum Requirements Checklist for Site Assessment Work Plans and Reports. NCDEQ, IHSB. January 2023. Preliminary Soil Remediation Goals Table. GN7035/CAR230035 7 March 2023 FIGURES J Lr_ -!1 :�� "/tt■■:L.S+t��I "��J) ��= �IIhl rf /', Site Location FAR tz itnow �Q' VATIA Ali, AWL - �= �'��L!]■-�uVIVO :,��' +�4LOr Lam Mid Legend Notes: Site Location Map 1. The topographic basemap was obtained from the ESRI online N Site Boundarydatabase. 2. Parcel Boundary obtained from New Hanover County, NC 19 and 41 Harnett Street online GIS database. Wilmington, NC Geosyritec r Figure consultants 0 2,000 Feet GN7035 February 2023 a N TABLE Table 1 Proposed Sample Locations and Analysis Almont Shipping Il 19 and 41 Harnett Street Wilmington, North Carolina BRS Project Number 23080-13-065 Geosyntec consultants Geosyntec Consultants of NC, P.C. Property Area Soil Borings/Groups Boring Depth (feet BLS) Composite Sample ID Analytical Methods Grab Sample VOCs by EPA Method 8260B Building 2 Zone 1 SS-Zl-YYYYMMDD - Composite Sample SVOCs by EPA Method 8270C, RCRA Metals EPA Methods 6010B, 7471 and Hexavalent Chromium by EPA Method 7199. Building 1 (eastern landscaped - Grab Sample VOCs by EPA Method 8260B area) Zone 2 SS-Z2-YYYYMMDD - Composite Sample SVOCs by EPA Method 8270C, RCRA Metals EPA Methods 6010B, 7471 and Hexavalent Chromium by EPA Method 7199. Building 1 (northern landscaped - Grab Sample VOCs by EPA Method 8260B area) Zone 3 2 SS-Z3-YYYYMMDD - Composite Sample SVOCs by EPA Method 8270C, RCRA Metals EPA Methods 6010B, 7471 and Hexavalent Chromium by EPA Method 7199. - Grab Sample VOCs by EPA Method 8260B Building 1 Courtyard Zone 4 SS-Z4-YYYYMMDD - Composite Sample SVOCs by EPA Method 8270C, RCRA Metals EPA Methods 6010B, 7471 and Hexavalent Chromium by EPA Method 7199. - Grab Sample VOCs by EPA Method 8260B Building 1 Courtyard Zone 5 SS-Z5-YYYYMMDD - Composite Sample SVOCs by EPA Method 8270C, RCRA Metals EPA Methods 6010B, 7471 and Hexavalent Chromium by EPA Method 7199. Number of Borings 25 Number of Samples Submitted for Laboratory Analysis 5 Notes: 1. Each composite zone contains five aliquots/boring locations 2. EPA indicates United States Environmental Protection Agency 3. VOCs indicates volatile organic compounds 4. SVOCs indicates semi -volatile organic compounds 5. RCRA indicates Resource Conservation Recovery Act 6. BLS indicates below land surface 7. YYYY indicates four digit year 8. MM indicates two digit month 9. DD indicates two digit day Page 1 of 1