credits for early adoption of Federal phase-in guidelines could be permittedinthe State Implementation Plan (SIPj to comply with the Clean AirAct. TheAmerican Gas Association (AGA) and the Natural Gas Vehicle Coalition (NGVCj are providing assistance in drafting the SIP guidelines. Natural gas vehicles have been in use for more than 20 years with no reports of safety problems. In fact, a 1990 EPA report rated natural gas safer than gasoline. Safety results from these three factors: natural gas is 1200