Regulation of Fuels and Fuel Additives: Standards for Reformulated and Conventional Gasoline

Résumé

The Clean Air Act, as amended in 1990 (CAA or the Act), mandated that the Environmental Protection Agency (EPA or the Agency) promulgate regulations requiring that gasoline sold in certain areas be reformulated to reduce vehicle emissions of toxic and ozone-forming compounds and that gasoline sold outside these areas would not be more polluting than it was in 1990. On February 16, 1994, EPA published the final rule establishing performance standards and compliance provisions for conventional and reformulated gasoline (RFG). This direct final rule (DFRM) makes minor corrections, clarifications, and revisions to various provisions in the final reformulated gasoline rule. This action addresses the following issues: Work-In-Progress (WIP) baseline adjustments; JP-4 baseline adjustments; summer/winter season definition for baseline determination; complex model valid range extension for conventional gasoline baselines; valid range limits for aromatics, oxygen, benzene, and RVP; clarifications to the VOC and NO X extrapolations in the complex model; clarifications of seasonal condition inconsistencies; and enforcement corrections/ clarifications associated with the reformulated gasoline a