The Environmental Protection Agency (EPA), under direction of the Clean Air Act, conducted a study (completed in 1992) of toxic air pollution from mobile sources, including both vehicles and fuels. The study, which was to focus on air toxic emissions that posed the most significant risk to human health, was specifically required to include benzene, formaldehyde, and 1,3-butadiene. As a result of the study, EPA was required to develop regulations that contained reasonable requirements to control toxic air emissions from motor vehicles and fuels. EPA promulgated Mobile Source Air Toxics (MSAT) rules in 2001 and 2007 applicable to gasoline.
 
NPRA was actively involved with EPA on the MSAT Phases 1 and 2 rulemakings to ensure that the regulations do not require unwarranted restrictions that add unnecessary costs, impact overall supply, or place additional strain on the U.S. fuel production and distribution system.

Related Documents

• NPRA’s summary of EPA’s MSAT Phase 2 standards
• NPRA’s summary of EPA’s MSAT Phase 1 standards

Related Web Links

• EPA information on MSAT