1675 APARTMENTS 1675-1679 WESTCHESTER AVENUE BRONX, NEW YORK Remedial Investigation Work Plan NYSDEC BCP Site #: C203107 AKRF Project Number: 170250 Prepared For: New York State Department of Environmental Conservation Division of Environmental Remediation, Remedial Bureau B 625 Broadway, 12th Floor Albany, New York 12233 Prepared On Behalf Of: 1675 JV Associates LLC 902 Broadway, 13th Floor New York, New York 10010 and 1675 Westchester Avenue Housing Development Fund Corporation 902 Broadway, 13th Floor New York, New York 10010 Prepared by: AKRF, Inc. 440 Park Avenue South, 7th Floor New York, New York 10016 212-696-0670 MAY 2018 AKRF, Inc. 1675-1679 Westchester Avenue, Bronx, New York 1675 Apartments; BCP Site No. C203107 Remedial Investigation Work Plan TABLE OF CONTENTS 1.0 INTRODUCTION ........................................................................................................................... 1 2.0 SITE DESCRIPTION AND HISTORY .......................................................................................... 3 2.1 Site Description and Surrounding Land Use ............................................................................... 3 2.2 Site Geology, Hydrogeology, and Subsurface Characteristics .................................................... 5 2.3 Proposed Redevelopment Plan .................................................................................................... 5 2.4 Site History .................................................................................................................................. 6 3.0 PREVIOUS INVESTIGATIONS .................................................................................................... 7 3.1 Areas of Concern (AOCs) ......................................................................................................... 10 4.0 FIELD PROGRAM ....................................................................................................................... 11 4.1 Field Program Summary ............................................................................................................ 11 4.2 Geophysical Survey ................................................................................................................... 11 4.3 Soil Boring Installation and Soil Sampling ............................................................................... 11 4.4 Groundwater Monitoring Well Installation and Development .................................................. 14 4.5 Groundwater Elevation Survey ................................................................................................. 15 4.6 Groundwater Sampling .............................................................................................................. 15 4.7 Sub-Slab/Soil Vapor and Ambient Air Sampling ...................................................................... 16 4.8 Quality Assurance/Quality Control (QA/QC) ........................................................................... 18 4.9 Decontamination Procedures ..................................................................................................... 19 4.10 Management of Investigation-Derived Waste (IDW) ............................................................... 19 5.0 REPORTING REQUIREMENTS ................................................................................................. 20 5.1 Remedial Investigation Report (RIR) ........................................................................................ 20 5.1.1 Description of Field Activities .............................................................................................. 20 5.1.2 Soil Boring Assessment ........................................................................................................ 20 5.1.3 Groundwater Assessment ...................................................................................................... 20 5.1.4 Sub-Slab/Soil Vapor and Ambient Air Assessment .............................................................. 20 5.1.5 Qualitative Human Health Exposure Assessment (QHHEA) ............................................... 21 6.0 PROPOSED PROJECT SCHEDULE ........................................................................................... 22 7.0 CERTIFICATION ......................................................................................................................... 23 8.0 REFERENCES .............................................................................................................................. 24 AKRF, Inc. 1675-1679 Westchester Avenue, Bronx, New York 1675 Apartments; BCP Site No. C203107 Remedial Investigation Work Plan FIGURES Figure 1 – Site Location Figure 2 – Site Plan Figure 3 – Surrounding Land Use and Sensitive Receptors Figure 4 – Soil Sample Concentrations Above NYSDEC RRSCOs and/or UUSCOs Figure 5 – Groundwater Sample Concentrations Above NYSDEC AWQSs Figure 6 – Soil Vapor Sample Concentrations Figure 7 – Proposed Sample Location Plan APPENDICES Appendix A – Quality Assurance Project Plan (QAPP) Appendix B – Health and Safety Plan (HASP) and Community Air Monitoring Plan (CAMP) IN-TEXT TABLES In-Text Table 1 – Remedial Investigation Personnel Contact Information In-Text Table 2 – Proposed Soil Sample Rationale In-Text Table 3 – Proposed Groundwater Sample Rationale In-Text Table 4 – Proposed Sub-Slab/Soil Vapor Sample Rationale In-Text Table 5 – Proposed Project Schedule AKRF, Inc. 1675-1679 Westchester Avenue, Bronx, New York 1675 Apartments; BCP Site No. C203107 Remedial Investigation Work Plan 1.0 INTRODUCTION This Remedial Investigation Work Plan (RIWP) has been prepared by AKRF, Inc. (AKRF) on behalf of 1675 JV Associates LLC and 1675 Westchester Avenue Housing Development Fund Corporation (Applicants) for the property located at 1675-1679 Westchester Avenue in the Bronx, New York, hereafter referred to as the “Site”. The Site is identified on the New York City Tax Map as Bronx Borough Tax Block 3780, Lot 1. The Site formerly comprised Bronx Borough Tax Block 3780, Lots 1 and 51; however, an application was filed with the New York City Department of Finance (NYCDOF) on March 1, 2018, which combined Lots 1 and 51 into Lot 1. The Site is an approximately 36,865-square foot “L-shaped” lot developed with an approximately 15,800- square foot vacant commercial building with cellars fronting Westchester Avenue, with a north-adjacent asphalt-paved parking area and a small landscaped area on the southwestern portion. The western portion of the building was most recently occupied by a medical facility until it was vacated sometime in 2012. The eastern portion of the building was most recently occupied by a wine and liquor store and a dry cleaner until it was vacated in January 2018. The Site is bounded by: residential buildings to the north; Westchester Avenue and the elevated 6 Metropolitan Transit Authority (MTA) subway tracks to the south, followed by a commercial shopping center; Fteley Avenue, followed by commercial and residential buildings to the east; and Metcalf Avenue, followed by the Bronx River Parkway to the west. A Site Location map is provided as Figure 1. This RIWP is being submitted concurrently with a New York State Department of Environmental Conservation (NYSDEC) Brownfield Cleanup Program (BCP) Application (BCP Site No. C203107). The Applicants plan to enter the New York State Department of Environmental Conservation (NYSDEC) Brownfield Cleanup Program (BCP) as a Volunteer. A November 2017 Subsurface (Phase II) Investigation Report prepared by AKRF for the Site concluded that there are elevated concentrations of metals and polycyclic aromatic hydrocarbons (PAHs) in soil, PAHs and arsenic in groundwater, and petroleum- and chlorinated solvent-related compounds in soil vapor at the Site. This RIWP describes the procedures to be used to define the nature and extent of contamination at the Site. The data compiled from the Remedial Investigation (RI) described in this RIWP will be used to prepare an RI Report (RIR). All work will be completed in accordance with this RIWP, which includes a Quality Assurance Project Plan (QAPP) (Appendix A) and a Health and Safety Plan (HASP) (Appendix B). The Community Air Monitoring Plan (CAMP) detailed in the HASP will be implemented during all subsurface disturbance activities at the Site, including, but not limited to, soil boring advancement, soil sampling, and backfilling of boreholes. Contact information for the parties responsible for the work described in this RIWP are included in In- Text Table 1: In-Text Table 1 Remedial Investigation Personnel Contact Information Company Individual Name Title Contact Number NYSDEC Alicia Barraza Project Manager (518) 402-9690 Quality Michelle Lapin, P.E. Assurance/Quality (646) 388-9520 AKRF Control Officer Deborah Shapiro, QEP Project Manager (646) 388-9544 Amy Jordan Deputy Project (646) 388-9864 1 AKRF, Inc. 1675-1679 Westchester Avenue, Bronx, New York 1675 Apartments; BCP Site No. C203107 Remedial Investigation Work Plan In-Text Table 1 Remedial Investigation Personnel Contact Information Company Individual Name Title Contact Number Manager Field Team Amy Jackson Leader/Site Safety (970) 773-6829 Officer 1675 JV Associates LLC and 1675 Westchester Avenue Client Michael Wadman (646) 388-8216 Housing Development Fund Representative Corporation (the Volunteers) 2 AKRF, Inc. 1675-1679 Westchester Avenue, Bronx, New York 1675 Apartments; BCP Site No. C203107 Remedial Investigation Work Plan 2.0