The U.S. Environmental Protection Agency (EPA) is proposing to amend the new source performance standards (NS PS) for stationary gas turbines and stationary combustion turbines. Issued in 2006, the performance standards for stationary turbines set new emissions limits for nitrogen oxide and sulfur dioxide. 71 Fed. Reg. 38,482 (7/6/06). The Utility Air Regulatory Group petitioned EPA in 2006 to reconsider portions of the standards.
EPA’s proposal, which primarily responds to the petition, would also exempt stationary combustion turbines that comply with performance standards for petroleum refineries or municipal solid waste facilities and allow turbine operators to petition EPA for a site-specific nitrogen oxide emissions limit. EPA specifically seeks comments on, among other matters, how to conduct a required reconstruction analysis on stationary combustion turbines that have been overhauled off site and operators cannot determine which components have been replaced. EPA will accept comments on the proposal for 60 days after it is published in the Federal Register.