Final Environmental Impact Statement Hampshire Country Club Planned Residential Development Village of Mamaroneck, Westchester County, New York LEAD AGENCY Village of Mamaroneck Planning Board 169 Mt Pleasant Avenue, Third Floor Mamaroneck, NY 10543 Contact: Village of Mamaroneck Planning Department 914.825.8758 PREPARED BY VHB Engineering, Surveying, and Landscape Architecture, P.C. 50 Main Street Suite 360 White Plains, NY 10606 914.617.6600 The Chazen Companies 1 North Broadway, Suite 803 White Plains, New York 10601 845-454-3980 Abrams Fensterman, LLP 81 Main Street, Suite 306 White Plains, New York 10601 914-607-7010 Village of Mamaroneck Planning Board 169 Mount Pleasant Avenue Mamaroneck, New York 10543 914-825-8757 Date of Adoption April 6, 2020 Lead Agency: Village of Mamaroneck Planning Board 169 Mount Pleasant Avenue Mamaroneck, NY 10543 Contact: Betty-Ann Sherer, Land Use Coordinator (914) 825-8758 [email protected] Applicant: Hampshire Recreation, LLC c/o New World Realty Advisors, LLC 60 Cutter Mill Road, Ste. 513 Great Neck, NY 11021 Contact: Dan Pfeffer (646) 723-4750 [email protected] Consultants that contributed to this document include: Project Attorney: Zarin & Steinmetz 81 Main Street, Suite 415 White Plains, NY 10601 Contact: David J. Cooper, Esq. (914) 682-7800 [email protected] Planning/EIS Preparation/Traffic Engineering/Natural Resources/Cultural Resources, Site Engineering, Architecture Landscape Design: VHB Engineering, Surveying, and Landscape Architecture, P.C. 50 Main Street, Suite 360 White Plains, NY 10606 Contact: Valerie Monastra, AICP (914) 467-6600 [email protected] Site Engineering, Traffic Engineering: Kimley-Horn 1 North Lexington Avenue, Suite 1575 White Plains, NY 10601 Contact: Michael Junghans, PE (914) 368-9200 [email protected] Geotechnical Engineering, Environmental Services: GZA 104 West 29th Street, 10th Floor New York, NY 10001 Contact: Stephen M. Kline, P.E. o: 212-594-8140 ext-8905 [email protected] Project Architect: Sullivan Architecture, P.C. 31 Mamaroneck Avenue White Plains, NY 10601 Contact: John Fry, AIA (914) 761-6006 [email protected] Table of Contents I. INTRODUCTION AND DESCRIPTION OF PROPOSED PROJECT ............................... I-1 1. Purpose of This Document.................................................................................................. I-1 2. Overview of SEQRA and Next Steps ................................................................................ I-2 3. Description of This Document ........................................................................................... I-2 4. Project History ......................................................................................................................... I-3 5. Project Description ................................................................................................................. I-5 II. INDEX OF COMMENTS AND RESPONSES ................................................................. II-1 1. Public Comment Letters ...................................................................................................... II-1 2. Form Letter Signatures ..................................................................................................... II-33 3. Public Hearing Comments .............................................................................................. II-41 4. Planning Board Memo Comments ............................................................................... II-47 III. COMMENTS AND RESPONSES ................................................................................. III-1 1. Executive Summary ..............................................................................................................III -1 2. Project Description ...............................................................................................................III -9 3. Impact Analyses A. Land Use, Zoning and Public Policy ......................................................... III-42 B. Community Character and Visual Impacts ............................................ III-65 C. Geology – Soils, Topography, and Steep Slopes ................................ III-68 D. Groundwater Resources ............................................................................... III-87 E. Surface Water Courses and Wetlands ..................................................... III-92 F. Stormwater Management .......................................................................... III-108 G. Floodplains ...................................................................................................... III-117 H. Water Supply .................................................................................................. III-150 I. Sanitary Sewage ............................................................................................ III-154 J. Vegetation and Wildlife .............................................................................. III-163 K. Critical Environmental Area ....................................................................... III-193 L. Traffic, Transit, and Pedestrians ............................................................... III-198 M. Community Demographics, Facilities and Services .......................... III-232 N. Fiscal and Economic Conditions .............................................................. III-251 O. Environmental Contamination ................................................................. III-263 P. Noise .................................................................................................................. III-277 Q. Air Quality ........................................................................................................ III-282 i R. Miscellaneous Comments .......................................................................... III-289 4. Alternatives ........................................................................................................................ III-296 TABLES Table I.5-1 Facility Ownership and Maintenance Summary ....................................................I-16 Table I.5-2 Average Daily and Peak Hour Truck and Non-Truck Visits to the Hampshire Country Club Site During Construction (With Projected Peak Hour Trips) .................................................................................................................................................I-28 Table III.2-1 Trees Proposed to be Removed by Caliper ....................................................... III-25 Revised Table 3C-1 Proposed Project Site Soils ....................................................................... III-71 Updated DEIS Table 3K-1 Existing Cover Types ..................................................................... III-106 Updated DEIS Table 3K-2 Existing and Proposed Cover Types ........................................ III-106 Revised DEIS Table 2-7 Project Approvals and Reviews ...................................................... III-152 Table III.3.J-1 Trees Removed Sorted .......................................................................................... III-170 Table III.3.J-2 Existing Cover Types .............................................................................................. III-173 Table III.3.J-3 Exisitng and Proposed Cover Types ................................................................. III-173 Revised DEIS Table 3K-2 Existing Cover Types ....................................................................... III-174 Table III.M.1-2 Proposed Action Generated Open Space Needs ..................................... III-233 Table III.M.1-2 Proposed Action Generated Sports Facility Needs .................................. III-234 Table III.M.1-3 Summary of Responses From Recreation Service Providers ................ III-235 Table III.M.7-1 Projected Public School Children Generated ............................................. III-245 Tabe III.M.8-1 Mamaroneck Schools Enrollment History .................................................... III-250 Table III.N.1-1 Projected Public School Children Generated ............................................. III-253 Table III.3.N.5-1 Real Estate Comps ............................................................................................. III-258 Table III.4-1 Comparison of Project Alternatives .................................................................... III-339 APPENDICES A. Public Hearing Transcripts Public Hearing #1- Transcript (2/14/18) 169 Mt. Pleasant Avenue, Village of Mamaroneck, NY Public Hearing #2 Transcript (4/11/18) Mamaroneck High School, Mamaroneck, NY ii B. Letters and Written Comments Received on the DEIS C. Updated Figures Figure 1: Existing Conditions Plan Figure 2: Layout Plan Figure 3: Construction Phasing Plan Figure 4: Preliminary Subdivision Plat Figure 5: Open Space Plan Figure 6a: Landscaping Plan Figure 6b: Landscaping Plan Details Figure 7: Utility Easement Plan Figure 8: Cut and Fill Figure 9: Development Platform Cross Section Figure 10a: Groundwater Elevation Map Figure 10b: Bedrock Elevation Map Figure 11: Flood Extent Model - 100 Year Storm Figure 12: Grading and Utility Plan Figure 13: Tree Removal Plan Figure 14a: Tree Removal Sorted Plan Figure 14b: Tree Removal Sorted Table Figure 14c: Trees to be Preserved Sorted Plan Figure 14d: Trees to be Preserved Sorted Table Figure 15a: Proposed Action Lower Density Site Plan - 25 Units Figure 15b: Proposed Action Lower