In response to lawsuits, the Environmental Protection Agency (EPA) has posted to the Federal Register a proposed settlement agreement on two rulemakings that revised the National Emission Standards for Hazardous Air Pollutants for Reciprocating Internal Combustion Engines (RICE NESHAP). Under the agreement, by April 20, the EPA will sign a notice of proposed rulemaking that includes a proposal to revise the RICE NESHAP and the stationary internal combustion engine new source performance standards to allow owners and operators of emergency stationary internal combustion engines to operate them in emergency conditions as part of an emergency demand response program for 60 hours per year or the minimum hours required by independent system operator tariff, whichever is less.
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