The EPA is taking a final action finding that several states have failed to submit State Implementation Plans (SIPs) to satisfy certain requirements of the Clean Air Act (CAA) for the 1997 8-hour ozone National Ambient Air Quality Standards (NAAQS). Under the CAA and EPA's implementing regulations, states with nonattainment areas classified as moderate, serious, severe or extreme were required to submit by June 15, 2007, SIPs: Demonstrating how each nonattainment area would attain the 1997 8-hour ozone standard as expeditiously as practicable but no later than the applicable dates established in the implementing regulations; and demonstrating reasonable further progress (RFP). Additionally, states were required by September 15, 2006, to submit for these same areas SIPs demonstrating that sources specified under the CAA were subject to reasonably available control technology requirements (RACT). States that are part of the Ozone Transport Region (OTR) were required to submit SIPs to meet the 1997 8-hour ozone RACT requirement for the entire state by September 15, 2006. The RACT requirement applies to all areas within the Ozone Transport Region, regardless of the area's designation for the 1997 8-hour ozone standard. Some states have not yet submitted SIPs to satisfy these requirements. The EPA is by this action making a finding of failure to submit for those nonattainment areas and OTR areas that have not made the required SIP submission(s). If EPA has not affirmatively found that the state has submitted the required plan or plans within 18 months, the offset sanction applies in the area. If within 6 additional months EPA has still not affirmatively determined that the state has submitted the required plan, the highway funding sanction applies in an area if it is designated nonattainment. No later than 2 years after EPA makes the finding, EPA must promulgate a Federal Implementation Plan if the state has not submitted and EPA has not approved the required SIP.