{"data":{"id":"us/40-cfr-81.457","jurisdiction":"us","citation":"40 CFR 81.457","heading":"Ozone Transport Region.","body":"Except as provided in paragraph (a), the Ozone Transport Region is comprised of the areas identified by Congress under 42 U.S.C. 7511c(a).\n(a) Ozone Transport Region boundary. As of March 14, 2022, the boundary for the Ozone Transport Region consists of the entire States of Connecticut, Delaware, Maryland, Massachusetts, New Hampshire, New Jersey, New York, Pennsylvania, Rhode Island, and Vermont; portions of Maine identified in this section under Table 1; and the Consolidated Metropolitan Statistical Area that includes the District of Columbia and the following counties and cities in Virginia: Arlington County, Fairfax County, Loudoun County, Prince William County, Strafford County, Alexandria City, Fairfax City, Falls Church City, Manassas City, and Manassas Park City.\nTable 1 to Paragraph (a)—Maine Towns and Cities in the Ozone Transport Region\nMaine towns and cities in the ozone transport region\nAndroscoggin County (only the following town): Durham.\nCumberland County (only the following towns and cities): Brunswick, Cape Elizabeth, Casco, Cumberland, Falmouth, Freeport, Frye Island, Gorham, Gray, Harpswell, Long Island, New Gloucester, North Yarmouth, Portland, Pownal, Raymond, Scarborough, South Portland, Standish, Westbrook, Windham, and Yarmouth.\nHancock County (only the following towns and cities): Bar Harbor, Blue Hill, Brooklin, Brooksville, Cranberry Isles, Deer Isle, Frenchboro, Gouldsboro, Hancock, Lamoine, Mount Desert, Sedwick, Sorrento, Southwest Harbor, Stonington, Sullivan, Surry, Swans Island, Tremont, Trenton, and Winter Harbor.\nKnox County (only the following towns and cities): Camden, Criehaven, Cushing, Friendship, Isle au Haut, Matinicus Isle, Muscle Ridge Shoals, North Haven, Owls Head, Rockland, Rockport, St. George, South Thomaston, Thomaston, Vinalhaven, and Warren.\nLincoln County (only the following towns and cities): Alna, Boothbay, Boothbay Harbor, Breman, Bristol, Damariscotta, Dresden, Edgecomb, Monhegan, Newcastle, Nobleboro, South Bristol, Southport, Waldoboro, Westport, and Wiscasset.\nSagadahoc County (all towns and cities).\nWaldo County (only the following town): Islesboro.\nYork County (only the following towns and cities): Alfred, Arundel, Berwick, Biddeford, Buxton, Dayton, Eliot, Hollis, Kennebunk, Kennebunkport, Kittery, Limington, Lyman, North Berwick, Ogunquit, Old Orchard Beach, Saco, Sanford, South Berwick, Wells, and York.\n(b) Applicability. As of March 14, 2022, the provisions of 42 U.S.C. 7511c will no longer be applicable in the following areas of Maine: The State of Maine, with the exception of the towns and cities listed in this section under table 1 to paragraph (a).","path":["Title 40—Protection of Environment","CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY","SUBCHAPTER C—AIR PROGRAMS","PART 81—DESIGNATION OF AREAS FOR AIR QUALITY PLANNING PURPOSES","Subpart E—Identification of Interstate Transport Regions"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-40.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:26:04Z","sha256":"99ca4bcbd5ec78a94b0fcf1937240c0703875a856906cc75a3d024c951ef3c68","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-81.455","next":"us/40-cfr-appendix-a-to-part-81"},"notice":"GroundRules: Original legal text. Not legal advice."}