The New York State Department of Environmental Conservation is taking comment until July 17 on a draft air permit change that would allow RED-Rochester LLC to shut down coal-fired capacity at the Eastman Business Park in Rochester, N.Y.
The department has received an application from RED-Rochester for renewal and modification of its Title V Facility Permit for utility operations, which include coal-, oil- and natural gas-fired boilers producing steam and electrical power for commercial customers in the Eastman Business Park.
“With this application for renewal, RED-Rochester LLC seeks authorization for conversion of Building 321 coal fired boiler operations to natural gas with some #2 fuel oil backup,” said a permit notice. “The extent of the conversion will be dependent on the volume of natural gas to be available at Eastman Business Park. The preferred ‘Scenario 1’ conversion of all coal burning operations to natural gas, is dependent on an increased natural gas supply to the boiler locations with the installation of a new natural gas pipeline along existing rights of way. An alternate ‘Scenario 2’ conversion, of part of the coal burning operations to natural gas, is based on the natural gas supply currently available, and is a contingency if the new pipeline does not become available.
“In either case, RED-Rochester will decommission six boilers, the currently shut down 640 million BTU per hour (MBTU/hr) coal fired Boiler 41, the operating 670 MBTU/hr coal fired Boiler 42, and four operating 98 MBTU/hr #6 fuel oil fired package boilers. With the increased Scenario 1 natural gas supply the 640 MBTU/hr coal fired Boiler 43 would be permanently shut down. If limited to the Scenario 2 current natural gas supply, RED-Rochester proposes to continue to operate Boiler 43 on coal in a backup role, and limit its heat input to a maximum of 560,000 MBTU/year, which is 10 percent of its annual operating capacity. This limit on Boiler 43 operations will meet the definition of a Limited-use boiler in 40 CFR 63 Subpart DDDDD National Emission Standards for Hazardous Air Pollutants (NESHAP) for Major Sources: Industrial Boilers. A Limited-use boiler must have a tune-up every 5 years, and is exempt from the emission limits, energy assessment requirements, and annual tune-up requirements of Subpart DDDDD.
“If limited to the Scenario 2 current natural gas supply, new installations will include three 160 MBTU/hr natural gas fired turbine generators, each fitted with a 245 MBTU/hr natural gas fired Heat Recovery Steam Generating Unit, and a single new 275 MBTU/hr dual fuel package boiler able to burn either natural gas or #2 fuel oil. These will replace the decommissioned boilers and 90 percent of current coal fired Boiler 43 operations. The 670 MBTU/hr Boiler 44 would continue to operate under this scenario, and would be required to meet Subpart DDDDD requirements for an existing coal fired boiler.
“With the preferred Scenario 1 increased natural gas supply, the turbine generators, steam generating units, and dual fuel boiler indicated above will be part of a larger conversion project. In addition, a new 343 MBTU/hr high pressure dual fuel natural gas or #2 fuel oil boiler, and two new 343 MBTU/hr high pressure natural gas boilers will also be installed. Finally, Boiler 44 will be converted from coal fired to dual fuel natural gas or #2 fuel oil operation, with a slightly reduced 622 MBTU/hr heat capacity.
“In response to the application, the Department has generated a Draft Title V Facility Permit to authorize either the Scenario 1 project for a conversion of all coal burning boiler operations to natural gas, or the Scenario 2 project for partial conversion.”