Approval and Promulgation of Implementation Plans; State of Missouri

EPA is approving a State Implementation Plan (SIP) revision to exempt initial fueling of motor vehicles at automobile assembly plants in the St. Louis metropolitan area from the Missouri Performance Evaluation Test Procedures (MO/PETP) approval test requirements. MO/ PETP requirements were initially implemented to maintain the integrity of local air quality by regulating gasoline fueling emissions. The Missouri Department of Natural Resources (MDNR) provided an air quality analysis and it was determined that removal of these test requirements for initial fueling at automobile assembly plants will not adversely affect air quality in the St. Louis area. In addition, certain portions of the rule were renumbered and reformatted. This revision will ensure consistency between the state and the federally-approved rules.