To provide that the rules of the Environmental Protection Agency entitled "National Emission Standards for Hazardous Air Pollutants for Reciprocating Internal Combustion Engines" have no force or effect with respect to existing stationary compression and spark ignition reciprocating internal combustion engines operated by certain persons and entities for the purpose of generating electricity or operating a water pump.

Provides that: (1) the final rule published by the Environmental Protection Agency (EPA) on March 3, 2010, entitled "National Emission Standards for Hazardous Air Pollutants for Reciprocating Internal Combustion Engines" and any subsequent regulation that is substantially the same shall have no force or effect with respect to existing stationary compression ignition reciprocating internal combustion engines operated for generating electricity or operating a water pump by a state or local government, a public or cooperative utility, or persons or entities engaged in the production of agricultural commodities, including livestock; and (2) the final rule of the same title published by EPA on August 20, 2010, the direct final action published by the EPA on March 9, 2011, entitled "National Emission Standards for Hazardous Air Pollutants for Reciprocating Internal Combustion Engines," and any subsequent regulation that is substantially the same shall have no force or effect with respect to existing stationary spark ignition reciprocating internal combustion engines operated for such purposes by such entities.