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State Implementation Plans (SIP): Submissions that EPA has Found Adequate or Inadequate

For more information about adequacy review, return to the main adequacy page.

Note: This list is not a complete list of all SIPs that have been submitted to EPA. The table below only includes a list of those SIP submissions that EPA has found to be adequate or inadequate for transportation conformity purposes to date. This list does not include SIP submissions that are currently under adequacy review.

Select a Region or State to review a list of SIPs
Region 1: Connecticut, Maine, Massachusetts, New Hampshire, Rhode Island, and Vermont
Region 2: New Jersey, New York, and the territories of Puerto Rico and the U.S. Virgin Islands
Region 3: Delaware, the District of Columbia, Maryland, Pennsylvania, Virginia, and West Virginia
Region 4: Alabama, Florida, Georgia, Kentucky, Mississippi, North Carolina, South Carolina, and Tennessee
Region 5: Illinois, Indiana, Michigan, Minnesota, Ohio, and Wisconsin
Region 6: Arkansas, Louisiana, New Mexico, Oklahoma, Texas
Region 7: Iowa, Kansas, Missouri, and Nebraska
Region 8: Colorado, Montana, North Dakota, South Dakota, Utah, and Wyoming
Region 9: Arizona, California, Hawaii, Nevada, and the territories of Guam and American Samoa
Region 10: Alaska, Idaho, Oregon, and Washington

For further information or assistance regarding this section of the Web site, contact  Astrid Terry, phone: (734) 214-4812, e-mail: