1 **New York State Department of Environmental Conservation Best Available Retrofit Technology Determination** 
Facilit y Sy

racuse Energy

Corporation Location Geddes, NY

Onondaga Count y Permit I D 7

- 3132

- 00052 Source Category Fossil

- fuel fired steam electric plant of

more than 250 mmBtu/hr heat input
**I. Introduction** The above referenced facility contains at least one emission source that falls under the requirements of the federal Best Available Retrofit Technology ( BART ) rule under 40 CFR Part 51 and Appendix Y, and the New York State BART regulation as codified under 6 NYCRR Part 249. These requirements affect an emission source which fulfills the following criteria:
1. Falls within one of 26 specific source categories, 2. Was not in operation prior to August 7, 1962 and was in existence on August 7, 1977, or underwent reconstruction between August 7, 1962 and August 7, 1977, and 3. Has a potential to emit (collectively , with other emission sources at the facility which fulfill items 1 and 2) of 250 tons per y ear or more of any visibility

- impairing pollutant. Emission sources that are deemed eligible b y the above criteria may be exempted by the BART anal ys is through several means, as follows:
1. A permit condition may be accepted which restricts the eligib le source’s potential to emit to less than 250 tons per year for each visibility

- impairing pollutant, as per Part 249.1(c)(1). 2. A permit condition may be accepted that requires the source to permanently shut down the unit by

January 1, 2014 , as per Part 249 .1(c)(2). 3. The facility

may show through modeling or other means acceptable to the Department that it does not or will not emit any combination of visibility

- impairing pollutants that results in a visibility

impairment equal to or greater than 0.1 deciviews in any federal Class Iarea, as per Part 249.1(c)(3).
**II. Proposed BART**  **Compliance Method** The Sy racuse Energy

Corporation facility

contains one eligible unit (“Unit 1”). This is a pulverized coal

- fired boiler of greater than 250 mmBtu per hour heat input. Sy racuse Energy submitted a letter, dated September 22, 2010, to the Department regarding the BART eligibility of Unit 1. This letter declared their intention to either accept NESCAUM/Department visibility modeling results if they

showed an insignificant impact as per 249.1(c)(2), or otherwise shut down the boiler as allowed by Part 249.1(c)(3).2

In earl y 2010, the Department requested emissions data from BART

- eligible facilities in order to update earlier NESCAUM modeling results which did not completely adhere to EPA and Department modeling protocol. Sy racuse Energy submitted the requested data, but a lack of NESCAUM information on this unit prevented the Department from doing a direct scaling of visibility impacts. It was, however, possible to approxi mate this unit’s impact b y comparing emissions to other facilities in the central New York region for which visibility impacts were known. These results indicated that the visibility impairment resulting from this unit’s emissions would exceed the 0.1 dec iview contribution threshold set by the Department. Sy

racuse Energy declined the option to conduct more refined visibility modeling of its own.

**I I**  **I. BART Determination** Because the available data cannot conclusively place the visibility

impacts of Uni t 1 below the 0.1 deciview exemption threshold, the Department is accepting Sy racuse Energy ’s decision to shut down this unit by

January 1, 2014, in compliance with Part 249.1(c)(2). This determination was submitted to the Federal Land Managers (FLMs) f or their review in accordance with Regional Haze State I mplementation Plan (SI P) requirements. Comments received from the FLMs on this determination, if any , will be included with its submission to EPA

. The Department is now working to expeditiously modi fy this facility’s Title V permit to include the enforceable BART determination . These permit modifications will be submitted to the U.S. Environmental Protection Agency (EPA) as SI P revisions once complete.