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. a.

Planning Board Meeting

Meeting Date:

02/06/2019

Information

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Case No. PB 17-13 Eastview Distribution Chamber Water Transmission Line Connection – Planning Board Steep Slope Permit & Wetland/Watercourse Permit Reapproval
A work session to discuss the reapproval of a project involving the proposed installation of 2,184 L.F. of 30” DIP water transmission main from the Eastview Water Distribution Chamber (owned by Westchester County), connecting to the existing 30” Catskill Aqueduct connection (owned by the Villages) located within Executive Boulevard to the south. This new pipe will bring water to the Eastview Chamber from the NYC Ultra Violet treatment plant. The proposed water transmission main will traverse two parcels in the Town of Greenburgh, south of Route 100C/Grasslands Road: 130 Grasslands Road (Parcel ID: 7.70-5-7) and 1 Center Street (Parcel ID: 7.120-18-8), both of which are owned by New York City. The Proposed action is sponsored by the Villages of Sleepy Hollow, Tarrytown, and Briarcliff Manor as part of their joint long-term plan to consolidate and update their water supply and transmission functions. The project will temporarily disturb a 25’ wide area along the path of the proposed water main. A permanent access path, 12-feet in width and constructed of porous materials (item 4 gravel) will be provided. The proposed water line has been routed to avoid as much disturbance of wetlands/watercourses, regulated buffers and steep slopes, as is practically possible. The project, as currently planned, will limit disturbance on the parcel to less than 2% of the total lot area. Steep slope disturbances have been limited to approximately 2,316 sq. ft. (1,878 sq. ft. on 15-25% STEEP SLOPES, 407 sq. ft. on 25-35% VERY STEEP SLOPES, and 31 sq. ft. on 35%+ EXCESSIVELY STEEP SLOPES). Wetland/watercourse and regulated buffer area disturbance has been limited to approximately 26,605 sq. ft. The wetland disturbances are mainly in buffer areas, with only a small portion crossing a minor tributary to the main watercourse, the Mine Brook. The project requires approximately 4,400 cubic yards of excavation. The project proposes the removal of 55 regulated trees, requiring a tree removal permit from the Town Forestry Officer. The applicant proposes 107 trees, and 34 shrubs, as replacement. Parcel ID: 7.70-5-7 consists of approximately 67.38 acres, and is located within the R-20 One-Family Residence District. Parcel ID: 7.120-18-8 consists of approximately 20.59 acres, and is located within the R-20 One-Family Residence District.

Fiscal Impact

Attachments
PB 17-13