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REMEDIAL INVESTIGATION WORK PLAN for 550 Tenth Avenue

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REMEDIAL INVESTIGATION WORK PLAN for 550 Tenth Avenue REMEDIAL INVESTIGATION WORK PLAN for 550 Tenth Avenue Redevelopment New York, New York NYSDEC BCP No. TBD Prepared for: GO Covenant LLC 432 Park Avenue South, 2nd Floor New York, New York 10016 Prepared by: Langan Engineering, Environmental, Surveying, Landscape Architecture and Geology, D.P.C. 300 Kimball Drive Parsippany, New Jersey 07054 27 May 2021 Langan Project No. 100674401 Remedial Investigation Work Plan 27 May 2021 550 Tenth Avenue Page i New York, New York Langan Project No. 100674401 NYSDEC BCP Site No. TBD TABLE OF CONTENTS CERTIFICATION ........................................................................................................................ iii 1.0 INTRODUCTION ............................................................................................................. 1 2.0 SITE BACKGROUND ...................................................................................................... 1 2.1 Site Description.................................................................................................. 1 2.2 Surrounding Property Land Use ....................................................................... 2 2.3 Site Physical Conditions .................................................................................... 4 2.3.1 Topography ............................................................................................ 4 2.3.2 Geology ................................................................................................... 4 2.3.3 Hydrogeology ......................................................................................... 5 2.3.4 Wetlands ................................................................................................. 5 2.4 Proposed Development Plan ............................................................................. 5 2.5 Site History ......................................................................................................... 6 2.6 Previous Environmental Reports ...................................................................... 6 3.0 SCOPE OF WORK......................................................................................................... 10 3.1 Geophysical Survey ......................................................................................... 14 3.2 Soil Investigation ............................................................................................. 14 3.2.1 Drilling and Logging ............................................................................. 14 3.2.2 Soil Sampling and Analysis ................................................................. 15 3.3 Groundwater Investigation ............................................................................. 16 3.3.1 Monitoring Well Installation ................................................................ 16 3.3.2 Groundwater Sampling and Analysis ................................................. 17 3.3.3 Monitoring Well Survey and Synoptic Gauging ................................ 17 3.4 Soil Vapor Intrusion Evaluation ...................................................................... 18 3.4.1 Soil Vapor Point Installation ................................................................ 18 3.4.2 Sub-Slab Soil Vapor Point Installation ............................................... 18 3.4.3 Indoor Air and Soil Vapor Sampling and Analysis ............................. 18 3.5 Data Management and Validation .................................................................. 19 3.6 Management of Investigation-Derived Waste ............................................... 20 3.7 Air Monitoring .................................................................................................. 20 3.7.1 Personnel Air Monitoring..................................................................... 20 3.7.2 Community Air Monitoring Plan (CAMP) ........................................... 21 3.8 Qualitative Human Health Exposure Assessment ......................................... 21 4.0 REMEDIAL INVESTIGATION REPORT ........................................................................ 22 4.1 Daily Field Reports ........................................................................................... 22 4.2 Remedial Investigation Report ....................................................................... 22 5.0 SCHEDULE ................................................................................................................... 23 Remedial Investigation Work Plan 27 May 2021 550 Tenth Avenue Page ii New York, New York Langan Project No. 100674401 NYSDEC BCP Site No. TBD TABLES Table 1 Proposed Sample Summary Table 2A Summary of Historical Soil Analytical Results Table 2B Summary of Historical Soil Analytical Results – Emerging Contaminants Table 3A Summary of Historical Pre-Characterization Soil Analytical Results – NY Table 3B Summary of Historical Pre-Characterization Soil Analytical Results – USEPA Table 4 A Summary of Historical Groundwater Analytical Results Table 4 B Summary of Historical Groundwater Analytical Results – Emerging Contaminants Table 5 Summary of Historical Soil Vapor Analytical Results FIGURES Figure 1 Site Location Map Figure 2A Remedial Investigation Soil Analytical Results Figure 2B Waste Characterization Soil Analytical Results Figure 3 Groundwater Analytical Results Figure 4 Soil Vapor Analytical Results Figure 5 Proposed Remedial Investigation Location Plan APPENDICES Appendix A Health and Safety Plan Appendix B Quality Assurance Project Plan Appendix C Previous Reports \\langan.com\data\PAR\data4\100674401\Project Data\_Discipline\Environmental\Reports\_Phase 2 (100674402)\2021-05 - BCP RIWP\550 Tenth Avenue - RIWP (FINAL 2021-05-27).docx Remedial Investigation Work Plan 27 May 2021 550 Tenth Avenue Page iii New York, New York Langan Project No. 100674401 NYSDEC BCP Site No. TBD CERTIFICATION I, Christopher McMahon, certify that I am currently a Qualified Environmental Professional as defined in 6 New York Codes, Rules, and Regulations (NYCRR) Part 375 and that this Remedial Investigation Work Plan was prepared in accordance with all applicable statutes and regulations and in substantial conformance with the New York State Department of Environmental Conservation (NYSDEC) Division of Environmental Remediation (DER)-10 Technical Guidance for Site Investigation and Remediation. Christopher McMahon, CHMM Remedial Investigation Work Plan 27 May 2021 550 10th Avenue Site Page 1 of 23 New York, New York Langan Project No. 100674401 NYSDEC BCP Site No. TBD 1.0 INTRODUCTION This Remedial Investigation Work Plan (RIWP) was prepared on behalf of GO Covenant LLC (the Applicant) for the ±16,000-square foot property located at 550 Tenth Avenue (Block 1050, Lot 61) in the Clinton Neighborhood of Manhattan, New York (the Site). The site is currently occupied by asphalt paved parking and walkway areas, and landscaped areas. The following work scope has been developed to meet the investigation requirements of the NYSDEC Brownfield Cleanup Program in accordance with the requirements of Environmental Conservation Law (ECL) Article 27-1415(2). This RIWP was developed in accordance with the process and requirements identified in the NYSDEC Division of Environmental Remediation (DER)-10 Technical Guidance for Site Investigation and Remediation (May 2010) and the New York State Department of Health (NYSDOH) “Guidance for Evaluating Soil Vapor Intrusion in the State of New York, with updates” (October 2006). Several previous investigations have been completed at the Site for the purposes of due diligence, the New York City Office of Environmental Remediation’s (NYCOER) E-Designation program, and environmental soil pre-characterization investigations. As part of the NYCOER’s E-Designation program, NYCOER approved the proposed scope of work presented in the December 2019 Phase II Investigation Work Plan which was developed to further characterize the Site and is described in Section 2.6 below. Additionally, a May 2021 Remedial Investigation Report (RIR) was submitted to NYC OER documenting the investigation activities and is also discussed in Section 2.6 below. Based on the results of May 2021 RIR, a decision was made to transition this Site into the BCP since hazardous waste level soil was unexpectedly encountered. 2.0 SITE BACKGROUND 2.1 Site Description The Site is located in the Clinton neighborhood of Manhattan, New York and is identified as Lot 61. The Site historically consisted of portions of former Lot 1 and Lot 61 until the tax lots were reapportioned in June 2020 to match the current proposed redevelopment extents. A Site Location Plan is provided as Figure 1. The Site is an approximately 16,000-square foot parcel and is bordered by 10th Avenue to the west, West 41st Street to the north, West 40th Street to the south, and the active redevelopment of former Covenant House New York Wings B and C to the east. New York City Transit (NYCT) tunnels are located to the north of the site, below West 41st Street. In addition, Lincoln Tunnel entrance roads and access ramps for the nearby Port Authority Bus Terminal are located to the south of the site, beyond West 40th Street. The Site is currently Remedial Investigation Work Plan 27 May 2021 550 10th Avenue Site Page 2 of 23 New York, New York Langan Project No. 100674401 NYSDEC BCP Site No. TBD occupied by Wing A of the Covenant House New York shelter for homeless youth, a parking lot, and construction field offices associated with the redevelopment of the former
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