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ENB - Region 1 Notices 4/6/2016

Negative Declaration

Suffolk County - The New York State Governor's Office of Storm Recovery, as lead agency, has determined that the proposed Village of Patchogue Out-of-District Sewer Extension will not have a significant adverse environmental impact. The Village of Patchogue Out-of-District Sewer Extension project is one of five projects included in the Suffolk County Coastal Resiliency Initiative, which seeks to mitigate impacts on human life and property, surface waters, and coastal wetlands associated with on-site wastewater treatment and disposal systems (OSWS) failures caused by natural hazards. These natural hazards include rain events, storm surge, and coastal flooding, particularly as they contribute to rising groundwater elevations and septic or cesspool failures for the 74 percent of homes in Suffolk County that rely on OSWS.

The action would construct upgrades to the existing sewer collection system and extend sanitary sewer service to 648 parcels outside the boundary of the existing sewer District. It includes four main components:

(1) Collection System Extension: Existing sewer mains would be re-routed and new bypass mains would be installed to convey sanitary flow from the newly connected parcels. Approximately 19,225 linear feet of 2 to 4 inch diameter, high-density polyethylene piping would be constructed within existing paved public rights-of-way.

(2) Individual Sewer Connections: 648 individual on-site low-pressure sewer grinder pump stations and 291 new home service laterals ranging in length from 25 feet to 100 feet, totaling approximately 38,500 linear feet of 1 to 2 inch-diameter HDPE piping, would be installed to connect the unsewered parcels to the system.

(3) Pump Station Upgrades: The West Avenue Pump Station would be upgraded by replacing the existing submersible sewage pumps, and replacing the existing 60-kilowatt (kW) diesel emergency generator in-kind to accommodate the additional 300,000 gallons per day (GPD) flow.

(4) Wastewater Treatment: Wastewater from the 648 parcels would be treated by the existing Patchogue Advance Wastewater Treatment Facility (AWTF). No improvements to the AWTF would be necessary because the existing AWTF was designed to accommodate 800,000 GPD. The total nitrogen concentration in the effluent would be 10 mg/L or less, in accordance with the existing State Pollution Discharge Elimination System (SPDES) permit for the AWTF.

Construction would begin in 2017 and would last approximately 31 months, with the new facilities scheduled to be operational in 2020.

The project is located in the Village of Patchogue, New York.

Contact: Thomas J. King, New York State Governor's Office of Storm Recovery, 99 Washington Avenue Suite 1224, Albany, NY 12260, Phone: (518) 473-0015, E-mail: Thomas.King@StormRecovery.ny.gov.


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