National Emission Standards for Hazardous Air Pollutants for Stationary Reciprocating Internal Combustion Engines

Riepilogo

This action proposes national emission standards for hazardous air pollutants (NESHAP) for stationary reciprocating internal combustion engines (RICE) with manufacturer's nameplate rating above 500 brake horsepower located at major sources of hazardous air pollutants (HAP). We have identified stationary RICE as a major source category of HAP emissions such as formaldehyde, acrolein, methanol, and acetaldehyde. The proposed rule would implement section 112(d) of the Clean Air Act (CAA) by requiring all major sources to meet HAP emission standards reflecting the application of the maximum achievable control technology (MACT) for RICE. We estimate that 40 percent of stationary RICE will be located at major sources and thus subject to the proposed rule. As a result, the environmental, energy, and economic impacts presented in this preamble reflect these estimates. We estimate that the proposed rule would reduce nationwide HAP emissions from major stationary RICE by approximately 5,000 tons/year in the 5th year after the standards are implemented. The emissions reductions achieved by these standards will provide protection to the public and achieve a primary goal of the CAA.