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ENB Region 9 Completed Applications 09/23/2015

Allegany County

Applicant:

Allegany Generating Station LLC
110 E Seneca St
Sherrill, NY 13461

Facility:

Allegany Generating Station
11537 St Rte 19A
Hume, NY 14536

Application ID:

9-0258-00018/00023

Permit(s) Applied for:

Article 19 Air Title V Facility

Project is Located:

Hume, Allegany County

Project Description:

The Department has prepared a draft permit and has made a tentative determination to issue a renewal of the Title V Operating Air permit and the Title IV Acid Rain Phase 2 Permit for the Allegany Generating Station, formerly known as Rochester Gas & Electric Allegany Station #133, located on Route 19A in the Town of Hume. The facility is a combined cycle natural gas combustion turbine plant which produces electricity, therefore this facility is an "affected source" in the Federal Acid Rain Program. Because this facility is an "affected source", a Title V permit is required for this facility. The draft permit has been updated to remove conditions related to regulations no longer in effect and to be consistent with the latest power producer requirements for control, monitoring and trading of emissions of sulfur dioxide, oxides of nitrogen (NOx) and greenhouse gases.

The facility is subject to the following regulations: 6 NYCRR Part 201-6 (Title V), 40 CFR 72 (Title IV Acid Rain), 40 CFR 97 (Cross-State Air Pollution Rule), and 6 NYCRR Part 242 (Carbon Dioxide Budget Trading Program), 6 NYCRR 201-7 (capping), 40 CFR 60 Subpart GG (gas turbine) and 40 CFR 60 Subpart Dc (duct burner). The draft permit contains emission limits for carbon monoxide (CO) and NOx at all stages of operation including a three hour startup window and a one hour shutdown window. A Title IV Acid Rain Permit has been drafted in accordance with 40 CFR 72 and is available for review.

The hourly emission limits in this permit were carried over from the previous permit unchanged and cap NOx and CO facility emissions below applicability thresholds of Prevention of Significant Deterioration (PSD), 40 CFR Part 52.21. The 12-month rolling NOx cap will also keep the facility below the NOx Reasonably Available Control Technology (RACT) applicability threshold in 6 NYCRR 227-2.

In accordance with 6NYCRR Parts 621.7(b)(9) and 201-6.3(c), the Administrator of the United States Environmental Protection Agency (USEPA) has the authority to bar issuance of any Title V Facility Permit if it is determined not to be in compliance with applicable requirements of the Clean Air Act or 6NYCRR Part 201.

Persons wishing to inspect the subject Title V files, including the application with all relevant supporting materials, the draft permit, and all other materials available to the DEC (the "permitting authority") that are relevant to this permitting decision should contact the DEC representative listed below. The Draft Permit and Permit Review Report may be viewed and printed from the Department web site at: http://www.dec.ny.gov/chemical/32249.html.

DEC will evaluate the application and the comments received on it to determine whether to hold a public hearing. Comments and requests for a public hearing should be in writing and addressed to the Department representative listed below. A copy of the Department's permit hearing procedures is available upon request or on the Department web site at: http://www.dec.ny.gov/permits/6234.html.

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 not subject to SEQR because it is a Type II action.

SEQR Lead Agency: None Designated

State Historic Preservation Act (SHPA) Determination:

The proposed activity is not subject to review in accordance with SHPA. The application type is exempt and/or the project involves the continuation of an existing operational activity.

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 Oct 23, 2015.

Contact:

Lisa M Czechowicz
NYSDEC Region 9 Headquarters
270 Michigan Ave
Buffalo, NY 14203
(716)851-7165
DEP.R9@dec.ny.gov


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