March 4, 2021 Mr. Richard Mustico Division of Environmental Remediation New York State Department of Environmental Conservation 625 Broadway Albany, New York 12233 Re: Revised Geothermal Heat Pump Pilot Study Work Plan 1 Java Street (aka 127-141 West Street and 14-28 India Street), Brooklyn, New York (Tax Block 2538, Tax Lot 1) Dear Mr. Mustico: Roux Environmental Engineering and Geology, D.P.C. (Roux), on behalf of 1 Java Owner LLC (Java LLC), has prepared this Revised Geothermal Heat Pump (GHP) Pilot Study Work Plan (Work Plan) for the property located at 1 Java Street (aka 127-141 West Street and 14-28 India Street) in Greenpoint, Brooklyn, New York (Site). The Site is enrolled in the New York State Department of Environmental Conservation (NYSDEC) Brownfield Cleanup Program (BCP) and is also known as the Greenpoint Ferry Site (BCP Site No. 224272). GHPs are used as an alternative way to reduce energy consumption associated with heating and cooling a building. Java LLC is proposing to complete the GHP Pilot Study discussed herein to evaluate the feasibility of installing a full-scale vertical closed-loop GHP system at the Site during Site redevelopment activities. If this pilot study is effective, a vertical closed-loop GHP field (i.e., geothermal well network) may be installed beneath the Site that would be composed of pipes that run vertically in the ground throughout portions of the Site. A circulating heat-carrying fluid would then be circulated in the closed- loop system piping to absorb or discharge heat from or to the ground depending on the season. The number of geothermal wells for the full-scale closed-loop system for the Site will be determined as part of a feasibility study. Java LLC has retained ZBF Geothermal LLC (ZBF) as their geothermal consultant. ZBF and their drilling contractor will perform all geothermal GHP Pilot Study activities described in this Work Plan. GHP Pilot Study Scope The scope of the GHP Pilot Study will include the advancement of one permanent geothermal well (geothermal well) to a maximum depth of 499 feet below land surface (ft bls). The geothermal well will be installed using the air rotary drilling method, and will be constructed in a six-inch borehole. The proposed geothermal well location is shown on Figure 1. A diagram showing the proposed geothermal well construction is provided as Figure 2. During drilling activities, a six-inch diameter steel outer casing will be driven from ground surface down through the overburden to the top of bedrock (based on past geotechnical investigations bedrock is estimated to be at a depth of approximately 110 ft bls) to prevent vertical migration of groundwater contaminants. Following installation of the outer casing, the drill will continue through the outer casing and into bedrock utilizing air rotary drilling equipment to a maximum depth of 499 ft bls. Due to the nature of the air rotary drilling method, continuous soil sampling will not be completed. However, the spoils (soil/rock) generated during geothermal well installation activities 3583.0001Y106/LR will be visually inspected for evidence of contamination and field screened for organic vapors using a photoionization detector (PID). 209 Shafter Street ■ Islandia, New York 11749 ■ +1.631.232.2600 ■ www.rouxinc.com California ■ Illinois ■ Massachusetts ■ New Jersey ■ New York ■ Texas Mr. Richard Mustico March 4, 2021 Page 2 Prior to drilling activities, a containment area consisting of a metal pan and a flexible rubber skirt that encloses the drill hole opening will be constructed around the boring location to prevent drilling spoils (soil, rock, groundwater) from migrating from the borehole. Additionally, a berm of hay bales and/or silt fence will be placed near the edge of the riverfront as an added safety measure. It is estimated that approximately five cubic yards (CY) of soil/rock cuttings will be generated as a result of the geothermal well installation. The overburden soil will be contained and staged in either 55-gallon steel drums, or a lined and covered roll off container. Rock cuttings will be contained in a weir tank. The soil and rock cuttings will each be sampled and characterized for off-Site disposal at a permitted facility. All water generated during this pilot study will be pumped into an 18,000-gallon weir frac tank and sampled prior to off-Site disposal or discharge to the combined sewer. Upon completion of drilling the borehole, a 1-1/4-inch polyethylene U-bend loop will be installed in the borehole, and the entire annulus will be filled with thermally enhanced cementitious grout to the top of the floor slab. The loop will be capped after installation. Should a full-scale geothermal system be installed at the site in the future, this pilot well will likely be utilized in the full-scale system. Should a full-scale system not be installed, this pilot well will be properly decommissioned. Material Disposal The soil/rock cuttings will be treated as contaminated and regulated material and will be transported and disposed in accordance with all local, State (including 6NYCRR Part 360) and Federal regulations. The proposed disposal facility will be submitted to NYSDEC for approval prior to off-Site disposal of the soil/rock cuttings at a permitted facility. All extracted groundwater will be disposed of in compliance with city, state, and federal laws and regulations. Extracted groundwater will either be containerized for off-Site disposal at a licensed and permitted disposal facility, or will be treated on-Site, if required, under a permit from New York City Department of Environmental Protection (NYCDEP) to meet pretreatment requirements prior to discharge to the combined sewer system. If discharged to the combined sewer, a sample of the water will be collected to confirm compliance with all applicable NYCDEP discharge criteria. Prior to discharge, water will remain in the frac tank for an adequate amount of time to allow solids to settle out, and if required, water will be filtered prior to discharge. Discharge will be completed at a controlled flow rate in accordance with NYCDEP limits. Health and Safety All work proposed in this Work Plan will be performed in accordance with the Site-specific Health and Safety (H&S) Plan (Attachment 1) and a Community Air Monitoring Plan (CAMP) (Attachment 2). CAMP will be performed during the advancement of the geothermal well. If exceedances of action levels listed in the CAMP occur, they will be reported to NYSDEC and New York State Department of Health Project Managers on a daily basis. Reporting All work completed as part of the GHP Pilot Study will be documented in the subsequent BCP Monthly Report, which will be prepared by Roux and submitted to NYSDEC. Schedule It is anticipated that it will take up to 5 days to install the well. One week after installation, the geothermal testing will begin, and will take 48-hour to complete. We anticipate beginning this work on Monday, March 8, 2021. ROUX │ Geothermal Heat Pump Pilot Study Work Plan 3583.0001Y106/LR Mr. Richard Mustico March 4, 2021 Page 3 Please contact Robert Kovacs by telephone at (631) 232-2600, or by email at [email protected] if you have any questions or require additional information regarding this Work Plan. Sincerely, ROUX ENVIRONMENTAL ENGINEERING AND GEOLOGY, D.P.C. Jeff Wills, P.G. Senior Hydrogeologist Robert Kovacs, P.G., LSRP Principal Scientist Attachments cc: John Grathwol, NYSDEC Brooke Nicholson, Lendlease Bruce Anderson, Lendlease Scott Stutman, P.E., Lendlease Zachary Fink, ZBF Geothermal Brian Morrissey, P.E., Roux Rachel Henke, Roux ROUX │ Geothermal Heat Pump Pilot Study Work Plan 3583.0001Y106/LR Geothermal Heat Pump Pilot Study Work Plan 1 Java Street (aka 127-141 West Street and 14-28 India Street) Brooklyn, New York FIGURES 1. Proposed Geothermal Boring Location 2. Proposed Geothermal Boring Detail 3583.0001Y106/CVRS ROUX INDIA STREET WEST STREET LOT 1 (! JAVA STREET Title: LEGEND PROPOSED GEOTHERMAL (! PROPOSED GEOTHERMAL BORING LOCATION BORING LOCATION SITE BOUNDARY 14-28 INDIA STREET, 1-45 JAVA STREET AND 127-141 WEST STREET, BROOKLYN, NY 11222 Prepared for: LENDLEASE DEVELOPMENT INC. Compiled by: R.H. Date: 02/24/21 FIGURE 150 0 150' Prepared by: M.S.R. Scale: AS SHOWN Project Mgr: R.H. Project: 3583.0001Y000 1 File: 3583.0001Y106.1.mxd V:\GIS\PROJECTS\3583\0001Y\106\3583.0001Y106.1.MXD Title: NOTE PROPOSED GEOTHERMAL 1. THE BOREHOLE DETAIL WAS PROVIDED BY ZBF GEOTHERMAL, LLC BORING DETAIL 14-28 INDIA STREET, 1-45 JAVA STREET AND 127-141 WEST STREET, BROOKLYN, NY 11222 Prepared for: LENDLEASE DEVELOPMENT INC. Compiled by: R.H. Date: 02/24/21 FIGURE Prepared by: M.S.R. Scale: NTS Project Mgr: R.H. Project: 3583.0001Y000 2 File: 3583.0001Y106.2.mxd V:\GIS\PROJECTS\3583\0001Y\106\3583.0001Y106.2.MXD Geothermal Heat Pump Pilot Study Work Plan 1 Java Street (aka 127-141 West Street and 14-28 India Street) Brooklyn, New York ATTACHMENTS 1. Site-Specific Health and Safety Plan (HASP) 2. Community Air Monitoring Plan (CAMP) 3583.0001Y106/CVRS ROUX Geothermal Heat Pump Pilot Study Work Plan 1 Java Street (aka 127-141 West Street and 14-28 India Street) Brooklyn, New York ATTACHMENT 1 Site-Specific Health and Safety Plan (HASP) 3583.0001Y106/CVRS ROUX Site-Specific Health and Safety Plan ________________________________ 1 Java Street (aka 127-141 West Street and 14-28 India Street) Brooklyn, New York February 24, 2021 Prepared for: Lendlease Development Inc. 200 Park Avenue, 9th Floor New York, New York 10166 Prepared by: Roux Environmental Engineering and Geology, D.P.C.. 209 Shafter Street 35 Islandia, New York 11749 8 3.0001Y104 /CV Environmental Consulting & Management +1.800.322.ROUX rouxinc.com Table of Contents Site-Specific Emergency Information ...........................................................................................................