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Planning Board Meeting
Meeting Date: 09/14/2021  



Case No. PB 21-04 Regeneron, 777 Old Saw Mill River Road (P.O. Tarrytown, N.Y.) – Planning Board Steep Slope Permit & Wetland/Watercourse Permit
A work session to discuss the decision of a Planning Board steep slope permit & wetland/watercourse permit application involving the proposed construction of a 2-story, 207,940 sq. ft. Research & Development (R&D) building and structured parking facility within an existing R&D Campus, with related improvements. The proposal includes the demolition of existing parking areas and other site features. The location of the project was the subject of prior amended site plan (TB 14-05) and related approvals (PB 14-16) for a differently configured building and parking layout, which was never constructed. The Applicant no longer seeks to construct per the prior approvals, based on its updated needs for the site. The applicant proposes a total disturbance area of 500,940 sq. ft. (11.55 acres) as part of the project. The applicant proposes approximately 29,064 sq. ft. of disturbance to 15-25% slopes (STEEP SLOPES), approximately 9,764 sq. f.t of disturbance to 25-35% slopes (VERY STEEP SLOPES), and approximately 3,137 sq. ft. of disturbance to 35%+ slopes (EXCESSIVELY STEEP SLOPES). The applicant proposes disturbing approximately 87,987 sq. ft. of wetland/watercourse buffer area, of the 957,355 sq. ft. of total wetland/watercourse and buffer area on the property. The project also requires amended site plan and tree removal permits from the Town Board (TB 21-06). The applicant proposes the removal of 152 regulated trees and has prepared a preliminary landscaping plan identifying replacement trees, shrubs, and groundcovers. The project also requires area variances from the Zoning Board of Appeals. The property consists of approximately 2,859,367 sq. ft. (65.64 acres) and is situated along the south side of Old Saw Mill River Road, approximately 500 feet west of the intersection of Saw Mill River Road and Old Saw Mill River Road. The property is located in the OB Office Building Zoning District and is designated on the tax map of the Town of Greenburgh as Parcel ID: 7.71-6-1..1. This matter is being reviewed in conjunction with Case No. TB 21-10/PB 21-09, described below, which would provide a temporary staging and parking area on adjacent property during the construction of this project.

Fiscal Impact
PB 21-04 Draft Approval

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