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Final Scope for the Modification of the Catalum SPDES Permit Environmental Impact Statement

CEQR No. 14DEC001

The New York State Department of Environmental Conservation (NYSDEC), as lead agency, has determined that the proposed modification to the NYSDEC State Pollutant Discharge Elimination System (SPDES) Permit for the Catskill Influent Chamber (Catalum SPDES Permit No. 026 4652), to incorporate measures to control turbidity in water diverted from Ashokan Reservoir and to postpone dredging of alum floc at Kensico Reservoir until completion of certain infrastructure projects, may have a significant adverse impact on the environment, and an Environmental Impact Statement (EIS) will be prepared.

A Draft Scoping Document for the Modification of the Catalum SPDES Permit EIS was issued on April 9, 2014, and distributed for public review and comment. Public meetings were held on May 12, 2014 at the Ulster County Community College, Stone Ridge, New York, and May 14, 2014 at the Mount Pleasant Town Hall, Valhalla, New York. Both meetings included an afternoon and evening session. The original comment period was set to end on July 8, 2014 but was extended, in response to requests made through the public comment process and closed on August 29, 2014.

The Final Scope issued on March 22, 2017 takes into consideration feedback from the public review process and includes responses to the comments received.

It is available at NYS DEC’s website, the New York City Department of Environmental Protection (NYCDEP) website, and at the following locations:

  • NYSDEC Central Office Division of Environmental Permits
    ATTN: Stephen Tomasik, Project Manager
    625 Broadway, 4th Floor
    Albany, New York 12233-1750
  • NYSDEC Region 3
    New Paltz Headquarters
    ATTN: Daniel Whitehead, Regional Permit Administrator
    21 South Putt Corners
    New Paltz, NY 12561
    (845) 256-3000
  • NYSDEC Region 3
    White Plains Sub-Office
    ATTN: Shohreh Karimipour, Regional Water Engineer
    100 Hillside Avenue, Suite 1W
    White Plains, NY 10603-2860
    (914) 428-2505
  • NYCDEP Kingston Office
    ATTN: Ira Stern, Chief Natural Resources Division
    71 Smith Ave
    Kingston, NY 12410
  • NYCDEP Valhalla Office
    ATTN: David Warne, Assistant Commissioner
    465 Columbus Avenue
    Valhalla, NY 10595
  • NYCDEP Lefrak Office
    ATTN: Susan Darling, Senior Project Manager
    59-17 Junction Blvd. 11th Floor
    Flushing, NY 11373

The Environmental Impact Statement (EIS) will evaluate the potential for significant adverse environmental impacts to occur from implementation of the turbidity control measures proposed to be incorporated into the Catalum SPDES Permit (Turbidity Control Measures), as well as from the postponement of dredging in the Kensico Reservoir. Implementation of the turbidity control measures analyzed in this EIS would allow NYCDEP to continue to provide reliable, clean, and safe drinking water while reducing reliance on chemical treatment of the water supply, specifically the use of alum, during episodic turbidity events.


Stephen Tomasik,
NYSDEC - Division of Environmental Permits,
625 Broadway, 4th Floor,
Albany, NY 12233-1750


Phone: (518) 402-9167


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