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SUBPART B—Designation of Air Quality Control Regions (§81.11 to §81.275)

• 81.11—Scope.
• 81.12—National Capital Interstate Air Quality Control Region (District of Columbia, Maryland, and Virginia).
• 81.13—New Jersey-New York-Connecticut Interstate Air Quality Control Region.
• 81.14—Metropolitan Chicago Interstate Air Quality Control Region.
• 81.15—Metropolitan Philadelphia Interstate Air Quality Control Region (Pennsylvania-New Jersey-Delaware).
• 81.16—Metropolitan Denver Intrastate Air Quality Control Region.
• 81.17—Metropolitan Los Angeles Air Quality Control Region.
• 81.18—Metropolitan St. Louis Interstate Air Quality Control Region.
• 81.19—Metropolitan Boston Intrastate Air Quality Control Region.
• 81.20—Metropolitan Cincinnati Interstate Air Quality Control Region.
• 81.21—San Francisco Bay Area Intrastate Air Quality Control Region.
• 81.22—Greater Metropolitan Cleveland Intrastate Air Quality Control Region.
• 81.23—Southwest Pennsylvania Intrastate Air Quality Control Region.
• 81.24—Niagara Frontier Intrastate Air Quality Control Region.
• 81.25—Metropolitan Kansas City Interstate Air Quality Control Region.
• 81.26—Hartford-New Haven-Springfield Interstate Air Quality Control Region.
• 81.27—Minneapolis-St. Paul Intrastate Air Quality Control Region.
• 81.28—Metropolitan Baltimore Intrastate Air Quality Control Region.
• 81.29—Metropolitan Indianapolis Intrastate Air Quality Control Region.
• 81.30—Southeastern Wisconsin Intrastate Air Quality Control Region.
• 81.31—Metropolitan Providence Interstate Air Quality Control Region.
• 81.32—Puget Sound Intrastate Air Quality Control Region.
• 81.33—Steubenville-Weirton-Wheeling Interstate Air Quality Control Region.
• 81.34—Metropolitan Dayton Intrastate Air Quality Control Region.
• 81.35—Louisville Interstate Air Quality Control Region.
• 81.36—Maricopa Intrastate Air Quality Control Region.
• 81.37—Metropolitan Detroit-Port Huron Intrastate Air Quality Control Region.
• 81.38—Metropolitan Houston-Galveston Intrastate Air Quality Control Region.
• 81.39—Metropolitan Dallas-Fort Worth Intrastate Air Quality Control Region.
• 81.40—Metropolitan San Antonio Intrastate Air Quality Control Region.
• 81.41—Metropolitan Birmingham Intrastate Air Quality Control Region.
• 81.42—Chattanooga Interstate Air Quality Control Region.
• 81.43—Metropolitan Toledo Interstate Air Quality Control Region.
• 81.44—Metropolitan Memphis Interstate Air Quality Control Region.
• 81.45—Metropolitan Atlanta Intrastate Air Quality Control Region.
• 81.46—U.S. Virgin Islands Air Quality Control Region.
• 81.47—Central Oklahoma Intrastate Air Quality Control Region.
• 81.48—Champlain Valley Interstate Air Quality Control Region.
• 81.49—Southeast Florida Intrastate Air Quality Control Region.
• 81.50—Metropolitan Omaha-Council Bluffs Interstate Air Quality Control Region.
• 81.51—Portland Interstate Air Quality Control Region.
• 81.52—Wasatch Front Intrastate Air Quality Control Region.
• 81.53—Southern Louisiana-Southeast Texas Interstate Air Quality Control Region.
• 81.54—Cook Inlet Intrastate Air Quality Control Region.
• 81.55—Northeast Pennsylvania-Upper Delaware Valley Interstate Air Quality Control Region.
• 81.57—Eastern Tennessee-Southwestern Virginia Interstate Air Quality Control Region.
• 81.58—Columbus (Georgia)-Phenix City (Alabama) Interstate Air Quality Control Region.
• 81.59—Cumberland-Keyser Interstate Air Quality Control Region.
• 81.60—Duluth (Minnesota)-Superior (Wisconsin) Interstate Air Quality Control Region.
• 81.61—Evansville (Indiana)-Owensboro-Henderson (Kentucky) Interstate Air Quality Control Region.
• 81.62—Northeast Mississippi Intrastate Air Quality Control Region.
• 81.63—Metropolitan Fort Smith Interstate Air Quality Control Region.
• 81.64—Huntington (West Virginia)-Ashland (Kentucky)-Portsmouth-Ironton (Ohio) Interstate Air Quality Control Region.
• 81.65—Joplin (Missouri)-Northeast Oklahoma Interstate Air Quality Control Region.
• 81.66—Southeast Minnesota-La Crosse (Wisconsin) Interstate Air Quality Control Region.
• 81.67—Lake Michigan Intrastate Air Quality Control Region.
• 81.68—Mobile (Alabama)-Pensacola-Panama City (Florida)-Southern Mississippi Interstate Air Quality Control Region.
• 81.69—Paducah (Kentucky)-Cairo (Illinois) Interstate Air Quality Control Region.
• 81.70—Parkersburg (West Virginia)-Marietta (Ohio) Interstate Air Quality Control Region.
• 81.71—Rockford (Illinois)-Janesville-Beloit (Wisconsin) Interstate Air Quality Control Region.
• 81.72—Tennessee River Valley (Alabama)-Cumberland Mountains (Tennessee) Interstate Air Quality Control Region.
• 81.73—South Bend-Elkhart (Indiana)-Benton Harbor (Michigan) Interstate Air Quality Control Region.
• 81.74—Northwest Pennsylvania-Youngstown Interstate Air Quality Control Region.
• 81.75—Metropolitan Charlotte Interstate Air Quality Control Region.
• 81.76—State of Hawaii Air Quality Control Region.
• 81.77—Puerto Rico Air Quality Control Region.
• 81.78—Metropolitan Portland Intrastate Air Quality Control Region.
• 81.79—Northeastern Oklahoma Intrastate Air Quality Control Region.
• 81.80—Las Vegas Intrastate Air Quality Control Region.
• 81.81—Merrimack Valley-Southern New Hampshire Interstate Air Quality Control Region.
• 81.82—El Paso-Las Cruces-Alamogordo Interstate Air Quality Control Region.
• 81.83—Albuquerque-Mid Rio Grande Intrastate Air Quality Control Region.
• 81.84—Metropolitan Fargo-Moorhead Interstate Air Quality Control Region.
• 81.85—Metropolitan Sioux Falls Interstate Air Quality Control Region.
• 81.86—Metropolitan Sioux City Interstate Air Quality Control Region.
• 81.87—Metropolitan Boise Intrastate Air Quality Control Region.
• 81.88—Billings Intrastate Air Quality Control Region.
• 81.89—Metropolitan Cheyenne Intrastate Air Quality Control Region.
• 81.90—Androscoggin Valley Interstate Air Quality Control Region.
• 81.91—Jacksonville (Florida)-Brunswick (Georgia) Interstate Air Quality Control Region.
• 81.92—Monroe (Louisiana)—El Dorado (Arkansas) Interstate Air Quality Control Region.
• 81.93—Hampton Roads Intrastate Air Quality Control Region.
• 81.94—Shreveport-Texarkana-Tyler Interstate Air Quality Control Region.
• 81.95—Central Florida Intrastate Air Quality Control Region.
• 81.96—West Central Florida Intrastate Air Quality Control Region.
• 81.97—Southwest Florida Intrastate Air Quality Control Region.
• 81.98—Burlington-Keokuk Interstate Air Quality Control Region.
• 81.99—New Mexico Southern Border Intrastate Air Quality Control Region.
• 81.100—Eastern Washington-Northern Idaho Interstate Air Quality Control Region.
• 81.101—Metropolitan Dubuque Interstate Air Quality Control Region.
• 81.102—Metropolitan Quad Cities Interstate Air Quality Control Region.
• 81.104—Central Pennsylvania Intrastate Air Quality Control Region.
• 81.105—South Central Pennsylvania Intrastate Air Quality Control Region.
• 81.106—Greenville-Spartanburg Intrastate Air Quality Control Region.
• 81.107—Greenwood Intrastate Air Quality Control Region.
• 81.108—Columbia Intrastate Air Quality Control Region.
• 81.109—Florence Intrastate Air Quality Control Region.
• 81.110—Camden-Sumter Intrastate Air Quality Control Region.
• 81.111—Georgetown Intrastate Air Quality Control Region.
• 81.112—Charleston Intrastate Air Quality Control Region.
• 81.113—Savannah (Georgia)-Beaufort (South Carolina) Interstate Air Quality Control Region.
• 81.114—Augusta (Georgia)-Aiken (South Carolina) Interstate Air Quality Control Region.
• 81.115—Northwest Nevada Intrastate Air Quality Control Region.
• 81.116—Northern Missouri Intrastate Air Quality Control Region.
• 81.117—Southeast Missouri Intrastate Air Quality Control Region.
• 81.118—Southwest Missouri Intrastate Air Quality Control Region.
• 81.119—Western Tennessee Intrastate Air Quality Control Region.
• 81.120—Middle Tennessee Intrastate Air Quality Control Region.
• 81.121—Four Corners Interstate Air Quality Control Region.
• 81.122—Mississippi Delta Intrastate Air Quality Control Region.
• 81.123—Southeastern Oklahoma Intrastate Air Quality Control Region.
• 81.124—North Central Oklahoma Intrastate Air Quality Control Region.
• 81.125—Southwestern Oklahoma Intrastate Air Quality Control Region.
• 81.126—Northwestern Oklahoma Intrastate Air Quality Control Region.
• 81.127—Central New York Intrastate Air Quality Control Region.
• 81.128—Genesee-Finger Lakes Intrastate Air Quality Control Region.
• 81.129—Hudson Valley Intrastate Air Quality Control Region.
• 81.130—Southern Tier East Intrastate Air Quality Control Region.
• 81.131—Southern Tier West Intrastate Air Quality Control Region.
• 81.132—Abilene-Wichita Falls Intrastate Air Quality Control Region.
• 81.133—Amarillo-Lubbock Intrastate Air Quality Control Region.
• 81.134—Austin-Waco Intrastate Air Quality Control Region.
• 81.135—Brownsville-Laredo Intrastate Air Quality Control Region.
• 81.136—Corpus Christi-Victoria Intrastate Air Quality Control Region.
• 81.137—Midland-Odessa-San Angelo Intrastate Air Quality Control Region.
• 81.138—Central Arkansas Intrastate Air Quality Control Region.
• 81.139—Northeast Arkansas Intrastate Air Quality Control Region.
• 81.140—Northwest Arkansas Intrastate Air Quality Control Region.
• 81.141—Berkshire Intrastate Air Quality Control Region.
• 81.142—Central Massachusetts Intrastate Air Quality Control Region.
• 81.143—Central Virginia Intrastate Air Quality Control Region.
• 81.144—Northeastern Virginia Intrastate Air Quality Control Region.
• 81.145—State Capital Intrastate Air Quality Control Region.
• 81.146—Valley of Virginia Intrastate Air Quality Control Region.
• 81.147—Eastern Mountain Intrastate Air Quality Control Region.
• 81.148—Eastern Piedmont Intrastate Air Quality Control Region.
• 81.149—Northern Coastal Plain Intrastate Air Quality Control Region.
• 81.150—Northern Piedmont Intrastate Air Quality Control Region.
• 81.151—Sandhills Intrastate Air Quality Control Region.
• 81.152—Southern Coastal Plain Intrastate Air Quality Control Region.
• 81.153—Western Mountain Intrastate Air Quality Control Region.
• 81.154—Eastern Shore Intrastate Air Quality Control Region.
• 81.155—Central Maryland Intrastate Air Quality Control Region.
• 81.156—Southern Maryland Intrastate Air Quality Control Region.
• 81.157—North Central Wisconsin Intrastate Air Quality Control Region.
• 81.158—Southern Wisconsin Intrastate Air Quality Control Region.
• 81.159—Great Basin Valley Intrastate Air Quality Control Region.
• 81.160—North Central Coast Intrastate Air Quality Control Region.
• 81.161—North Coast Intrastate Air Quality Control Region.
• 81.162—Northeast Plateau Intrastate Air Quality Control Region.
• 81.163—Sacramento Valley Intrastate Air Quality Control Region.
• 81.164—San Diego Intrastate Air Quality Control Region.
• 81.165—San Joaquin Valley Intrastate Air Quality Control Region.
• 81.166—South Central Coast Intrastate Air Quality Control Region.
• 81.167—Southeast Desert Intrastate Air Quality Control Region.
• 81.168—Great Falls Intrastate Air Quality Control Region.
• 81.169—Helena Intrastate Air Quality Control Region.
• 81.170—Miles City Intrastate Air Quality Control Region.
• 81.171—Missoula Intrastate Air Quality Control Region.
• 81.172—Comanche Intrastate Air Quality Control Region.
• 81.173—Grand Mesa Intrastate Air Quality Control Region.
• 81.174—Pawnee Intrastate Air Quality Control Region.
• 81.175—San Isabel Intrastate Air Quality Control Region.
• 81.176—San Luis Intrastate Air Quality Control Region.
• 81.177—Yampa Intrastate Air Quality Control Region.
• 81.178—Southern Delaware Intrastate Air Quality Control Region.
• 81.179—Aroostook Intrastate Air Quality Control Region.
• 81.181—Down East Intrastate Air Quality Control Region.
• 81.182—Northwest Maine Intrastate Air Quality Control Region.
• 81.183—Eastern Connecticut Intrastate Air Quality Control Region.
• 81.184—Northwestern Connecticut Intrastate Air Quality Control Region.
• 81.185—Northern Washington Intrastate Air Quality Control Region.
• 81.187—Olympic-Northwest Washington Intrastate Air Quality Control Region.
• 81.189—South Central Washington Intrastate Air Quality Control Region.
• 81.190—Eastern Idaho Intrastate Air Quality Control Region.
• 81.191—Appalachian Intrastate Air Quality Control Region.
• 81.192—Bluegrass Intrastate Air Quality Control Region.
• 81.193—North Central Kentucky Intrastate Air Quality Control Region.
• 81.194—South Central Kentucky Intrastate Air Quality Control Region.
• 81.195—Central Michigan Intrastate Air Quality Control Region.
• 81.196—South Central Michigan Intrastate Air Quality Control Region.
• 81.197—Upper Michigan Intrastate Air Quality Control Region.
• 81.199—East Alabama Intrastate Air Quality Control Region.
• 81.200—Metropolitan Columbus Intrastate Air Quality Control Region.
• 81.201—Mansfield-Marion Intrastate Air Quality Control Region.
• 81.202—Northwest Ohio Intrastate Air Quality Control Region.
• 81.203—Sandusky Intrastate Air Quality Control Region.
• 81.204—Wilmington-Chillicothe-Logan Intrastate Air Quality Control Region.
• 81.205—Zanesville-Cambridge Intrastate Air Quality Control Region.
• 81.213—Casper Intrastate Air Quality Control Region.
• 81.214—Black Hills-Rapid City Intrastate Air Quality Control Region.
• 81.215—East Central Indiana Intrastate Air Quality Control Region.
• 81.216—Northeast Indiana Intrastate Air Quality Control Region.
• 81.217—Southern Indiana Intrastate Air Quality Control Region.
• 81.218—Wabash Valley Intrastate Air Quality Control Region.
• 81.219—Central Oregon Intrastate Air Quality Control Region.
• 81.220—Eastern Oregon Intrastate Air Quality Control Region.
• 81.221—Southwest Oregon Intrastate Air Quality Control Region.
• 81.226—Lincoln-Beatrice-Fairbury Intrastate Air Quality Control Region.
• 81.230—Allegheny Intrastate Air Quality Control Region.
• 81.231—Central West Virginia Intrastate Air Quality Control Region.
• 81.232—Eastern Panhandle Intrastate Air Quality Control Region.
• 81.233—Kanawha Valley Intrastate Air Quality Control Region.
• 81.234—North Central West Virginia Intrastate Air Quality Control Region.
• 81.235—Southern West Virginia Intrastate Air Quality Control Region.
• 81.236—Central Georgia Intrastate Air Quality Control Region.
• 81.237—Northeast Georgia Intrastate Air Quality Control Region.
• 81.238—Southwest Georgia Intrastate Air Quality Control Region.
• 81.239—Upper Rio Grande Valley Intrastate Air Quality Control Region.
• 81.240—Northeastern Plains Intrastate Air Quality Control Region.
• 81.241—Southwestern Mountains-Augustine Plains Intrastate Air Quality Control Region.
• 81.242—Pecos-Permian Basin Intrastate Air Quality Control Region.
• 81.243—Central Minnesota Intrastate Air Quality Control Region.
• 81.244—Northwest Minnesota Intrastate Air Quality Control Region.
• 81.245—Southwest Minnesota Intrastate Air Quality Control Region.
• 81.246—Northern Alaska Intrastate Air Quality Control Region.
• 81.247—South Central Alaska Intrastate Air Quality Control Region.
• 81.248—Southeastern Alaska Intrastate Air Quality Control Region.
• 81.249—Northwest Oregon Intrastate Air Quality Control Region.
• 81.250—North Central Kansas Intrastate Air Quality Control Region.
• 81.251—Northeast Kansas Intrastate Air Quality Control Region.
• 81.252—Northwest Kansas Intrastate Air Quality Control Region.
• 81.253—South Central Kansas Intrastate Air Quality Control Region.
• 81.254—Southeast Kansas Intrastate Air Quality Control Region.
• 81.255—Southwest Kansas Intrastate Air Quality Control Region.
• 81.256—Northeast Iowa Intrastate Air Quality Control Region.
• 81.257—North Central Iowa Intrastate Air Quality Control Region.
• 81.258—Northwest Iowa Intrastate Air Quality Control Region.
• 81.259—Southwest Iowa Intrastate Air Quality Control Region.
• 81.260—South Central Iowa Intrastate Air Quality Control Region.
• 81.261—Southeast Iowa Intrastate Air Quality Control Region.
• 81.262—North Central Illinois Intrastate Air Quality Control Region.
• 81.263—East Central Illinois Intrastate Air Quality Control Region.
• 81.264—West Central Illinois Intrastate Air Quality Control Region.
• 81.265—Southeast Illinois Intrastate Air Quality Control Region.
• 81.266—Alabama and Tombigbee Rivers Intrastate Air Quality Control Region.
• 81.267—Southeast Alabama Intrastate Air Quality Control Region.
• 81.268—Mohave-Yuma Intrastate Air Quality Control Region.
• 81.269—Pima Intrastate Air Quality Control Region.
• 81.270—Northern Arizona Intrastate Air Quality Control Region.
• 81.271—Central Arizona Intrastate Air Quality Control Region.
• 81.272—Southeast Arizona Intrastate Air Quality Control Region.
• 81.273—Lake County Intrastate Air Quality Control Region.
• 81.274—Mountain Counties Intrastate Air Quality Control Region.
• 81.275—Lake Tahoe Intrastate Air Quality Control Region.