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ENB Region 2 Completed Applications 01/13/2010

New York County

Applicant:

Consolidated Edison Company of New York Inc
4 Irving Pl Rm 828
New York, NY 10003 -3502

Facility:

Con ED-EAST River Generating Station
701-827 East 14TH St
New York, NY 10009

Application ID:

2-6206-00012/00004

Permit(s) Applied for:

Article 17 Titles 7 & 8 Industrial SPDES - Surface Discharge

Project is Located:

Manhattan, New York County


Project Description:

The Department is proposing a Department Initiated Modification (DIM) to the SPDES permit for the Consolidated Edison East River Generating Station that includes a Best Technology Available (BTA) determination, pursuant to 6NYCRR Section 704.5, Intake Structures, and Section 316(b) of the federal Clean Water Act (CWA). The modified Permit incorporates a requirement to install traveling intake screens modified with fish protective features (aka Ristroph screens), use of fine mesh intake screen panels and a low stress fish return system.

The East River Generating Station, located along the East River, first began operations in 1927. The station currently has two oil and gas fired units, built in 1951 and 1955 with rated capacities of 137 and 180 megawatts. The facility has a combined condenser cooling and service water flow of 369 million gallons per day. The shoreline intake structure consists of a common intake screenwell for the two operating units, leading to four dual flow traveling screens to keep the station's condensers clean. Screens are washed continuously to remove impinged material (material organisms and debris), which enters a common sluiceway for discharge into the East River.

In accordance with 6NYCRR Section 704.5, Intake Structures, and Section 316(b) of the federal Clean Water Act (CWA), the location, design, construction, and capacity of cooling water intake structures must reflect the best technology available (BTA) for minimizing adverse environmental impact. The Department's BTA requirements for existing facilities with cooling water intake structures call for minimum impact reductions of 80 percent in impingement mortality and 60 percent in entrainment, measured from baseline conditions. The Department believes that implementing the technologies described in the opening paragraph above, coupled with the decrease in flow due to the use of cogeneration during winter, will achieve an estimated 90 percent reduction in impingement mortality and a 75 percent reduction in entrainment from baseline conditions. This is a substantially higher reduction than other non closed-cycle cooling alternatives.

Availability of Application Documents:

Filed application documents, and Department draft permits where applicable, are available for inspection during normal business hours at the address of the contact person. To ensure timely service at the time of inspection, it is recommended that an appointment be made with the contact person.

State Environmental Quality Review (SEQR) Determination:

Project is an Unlisted Action and will not have a significant impact on the environment. A Negative Declaration is on file. A coordinated review was not performed.

SEQR Lead Agency: None Designated

State Historic Preservation Act (SHPA) Determination:

The proposed activity is not subject to review in accordance with SHPA. The permit type is exempt or the activity is being reviewed in accordance with federal historic preservation regulations.

Coastal Management:

This project is not located in a Coastal Management area and is not subject to the Waterfront Revitalization and Coastal Resources Act.

Opportunity for Public Comment:

Comments on this project must be submitted in writing to the Contact Person no later than Feb 12, 2010.

Contact:

Rudyard G Edick
NYSDEC Headquarters
625 Broadway
Albany, NY 12233
(518)402-9167
deppermitting@dec.ny.gov


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    NYS DEC
    Division of Environmental Permits
    625 Broadway, 4th Floor
    Albany, NY 12233-1750
    518-402-9167
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