EPA's goal is to minimize federal and state burden in developing SIPs, but ensure the plans' effectiveness in complying with the Clean Air Act. Through collaboration with the The National Association of Clean Air Agencies (NACAA/ECOs) SIP Reform Work Group, EPA has issued the following guidance memos to aid states in the SIP development process.
You may need a PDF reader to view some of the files on this page. See EPA’s About PDF page to learn more.- Regional Consistency for the Administrative Requirements of State Implementation Plan Submittals and Use of "Letter Notices", dated April 6, 2011 (PDF)(13 pp, 3 MB, April 6, 2011)
- Transportation Conformity-related Clarifications to Appendix C of the April 6, 2011 Memorandum, dated July 27, 2011 (PDF)(2 pp, 141 K)
- Options and Efficiency Tools for EPA Action on State Implementation Plan (SIP) Submittals, dated October 31, 2011 (PDF)(15 pp, 128 K)
- Guidelines for Preparing Letters Submitting State Implementation Plans (SIPs) to EPA and for Preparing Public Notices for SIPs, dated November 22, 2011 (PDF)(12 pp, 966 K)