Code of Federal Regulations (alpha)

CFR /  Title 40  /  Part 81: Designation Of Areas For Air Quality Planning Purposes

Section No. Description
Section 81.1 Scope
Section 81.11 National Capital Interstate Air Quality Control Region (District of Columbia, Maryland, and Virginia)
Section 81.12 New Jersey-New York-Connecticut Interstate Air Quality Control Region
Section 81.13 Metropolitan Chicago Interstate Air Quality Control Region
Section 81.14 Metropolitan Philadelphia Interstate Air Quality Control Region (Pennsylvania-New Jersey-Delaware)
Section 81.15 Metropolitan Denver Intrastate Air Quality Control Region
Section 81.16 Metropolitan Los Angeles Air Quality Control Region
Section 81.17 Metropolitan St
Section 81.18 Metropolitan Boston Intrastate Air Quality Control Region
Section 81.19 Metropolitan Cincinnati Interstate Air Quality Control Region
Section 81.20 San Francisco Bay Area Intrastate Air Quality Control Region
Section 81.21 Greater Metropolitan Cleveland Intrastate Air Quality Control Region
Section 81.22 Southwest Pennsylvania Intrastate Air Quality Control Region
Section 81.23 Niagara Frontier Intrastate Air Quality Control Region
Section 81.24 Metropolitan Kansas City Interstate Air Quality Control Region
Section 81.25 Hartford-New Haven-Springfield Interstate Air Quality Control Region
Section 81.26 Minneapolis-St
Section 81.27 Metropolitan Baltimore Intrastate Air Quality Control Region
Section 81.28 Metropolitan Indianapolis Intrastate Air Quality Control Region
Section 81.29 Southeastern Wisconsin Intrastate Air Quality Control Region
Section 81.30 Metropolitan Providence Interstate Air Quality Control Region
Section 81.31 Puget Sound Intrastate Air Quality Control Region
Section 81.32 Steubenville-Weirton-Wheeling Interstate Air Quality Control Region
Section 81.33 Metropolitan Dayton Intrastate Air Quality Control Region
Section 81.34 Louisville Interstate Air Quality Control Region
Section 81.35 Maricopa Intrastate Air Quality Control Region
Section 81.36 Metropolitan Detroit-Port Huron Intrastate Air Quality Control Region
Section 81.37 Metropolitan Houston-Galveston Intrastate Air Quality Control Region
Section 81.38 Metropolitan Dallas-Fort Worth Intrastate Air Quality Control Region
Section 81.39 Metropolitan San Antonio Intrastate Air Quality Control Region
Section 81.40 Metropolitan Birmingham Intrastate Air Quality Control Region
Section 81.41 Chattanooga Interstate Air Quality Control Region
Section 81.42 Metropolitan Toledo Interstate Air Quality Control Region
Section 81.43 Metropolitan Memphis Interstate Air Quality Control Region
Section 81.44 Metropolitan Atlanta Intrastate Air Quality Control Region
Section 81.45 U
Section 81.46 Central Oklahoma Intrastate Air Quality Control Region
Section 81.47 Champlain Valley Interstate Air Quality Control Region
Section 81.48 Southeast Florida Intrastate Air Quality Control Region
Section 81.49 Metropolitan Omaha-Council Bluffs Interstate Air Quality Control Region
Section 81.50 Portland Interstate Air Quality Control Region
Section 81.51 Wasatch Front Intrastate Air Quality Control Region
Section 81.52 Southern Louisiana-Southeast Texas Interstate Air Quality Control Region
Section 81.53 Cook Inlet Intrastate Air Quality Control Region
Section 81.54 Northeast Pennsylvania-Upper Delaware Valley Interstate Air Quality Control Region
Section 81.55 Eastern Tennessee-Southwestern Virginia Interstate Air Quality Control Region
Section 81.57 Columbus (Georgia)-Phenix City (Alabama) Interstate Air Quality Control Region
Section 81.58 Cumberland-Keyser Interstate Air Quality Control Region
Section 81.59 Duluth (Minnesota)-Superior (Wisconsin) Interstate Air Quality Control Region
Section 81.60 Evansville (Indiana)-Owensboro-Henderson (Kentucky) Interstate Air Quality Control Region
Section 81.61 Northeast Mississippi Intrastate Air Quality Control Region
Section 81.62 Metropolitan Fort Smith Interstate Air Quality Control Region
Section 81.63 Huntington (West Virginia)-Ashland (Kentucky)-Portsmouth -Ironton (Ohio) Interstate Air Quality Control Region
Section 81.64 Joplin (Missouri)-Northeast Oklahoma Interstate Air Quality Control Region
Section 81.65 Southeast Minnesota-La Crosse (Wisconsin) Interstate Air Quality Control Region
Section 81.66 Lake Michigan Intrastate Air Quality Control Region
Section 81.67 Mobile (Alabama)-Pensacola-Panama City (Florida)-Southern Mississippi Interstate Air Quality Control Region
Section 81.68 Paducah (Kentucky)-Cairo (Illinois) Interstate Air Quality Control Region
Section 81.69 Parkersburg (West Virginia)-Marietta (Ohio) Interstate Air Quality Control Region
Section 81.70 Rockford (Illinois)-Janesville-Beloit (Wisconsin) Interstate Air Quality Control Region
Section 81.71 Tennessee River Valley (Alabama)-Cumberland Mountains (Tennessee) Interstate Air Quality Control Region
Section 81.72 South Bend-Elkhart (Indiana)-Benton Harbor (Michigan) Interstate Air Quality Control Region
Section 81.73 Northwest Pennsylvania-Youngstown Interstate Air Quality Control Region
Section 81.74 Metropolitan Charlotte Interstate Air Quality Control Region
Section 81.75 State of Hawaii Air Quality Control Region
Section 81.76 Puerto Rico Air Quality Control Region
Section 81.77 Metropolitan Portland Intrastate Air Quality Control Region
Section 81.78 Northeastern Oklahoma Intrastate Air Quality Control Region
Section 81.79 Las Vegas Intrastate Air Quality Control Region
Section 81.80 Merrimack Valley-Southern New Hampshire Interstate Air Quality Control Region
Section 81.81 El Paso-Las Cruces-Alamogordo Interstate Air Quality Control Region
Section 81.82 Albuquerque-Mid Rio Grande Intrastate Air Quality Control Region
Section 81.83 Metropolitan Fargo-Moorhead Interstate Air Quality Control Region
Section 81.84 Metropolitan Sioux Falls Interstate Air Quality Control Region
Section 81.85 Metropolitan Sioux City Interstate Air Quality Control Region
Section 81.86 Metropolitan Boise Intrastate Air Quality Control Region
Section 81.87 Billings Intrastate Air Quality Control Region
Section 81.88 Metropolitan Cheyenne Intrastate Air Quality Control Region
Section 81.89 Androscoggin Valley Interstate Air Quality Control Region
Section 81.90 Jacksonville (Florida)-Brunswick (Georgia) Interstate Air Quality Control Region
Section 81.91 Monroe (Louisiana)--El Dorado (Arkansas) Interstate Air Quality Control Region
Section 81.92 Hampton Roads Intrastate Air Quality Control Region
Section 81.93 Shreveport-Texarkana-Tyler Interstate Air Quality Control Region
Section 81.94 Central Florida Intrastate Air Quality Control Region
Section 81.95 West Central Florida Intrastate Air Quality Control Region
Section 81.96 Southwest Florida Intrastate Air Quality Control Region
Section 81.97 Burlington-Keokuk Interstate Air Quality Control Region
Section 81.98 New Mexico Southern Border Intrastate Air Quality Control Region
Section 81.99 Eastern Washington-Northern Idaho Interstate Air Quality Control Region
Section 81.100 Metropolitan Dubuque Interstate Air Quality Control Region
Section 81.101 Metropolitan Quad Cities Interstate Air Quality Control Region
Section 81.102 Central Pennsylvania Intrastate Air Quality Control Region
Section 81.104 South Central Pennsylvania Intrastate Air Quality Control Region
Section 81.105 Greenville-Spartanburg Intrastate Air Quality Control Region
Section 81.106 Greenwood Intrastate Air Quality Control Region
Section 81.107 Columbia Intrastate Air Quality Control Region
Section 81.108 Florence Intrastate Air Quality Control Region
Section 81.109 Camden-Sumter Intrastate Air Quality Control Region
Section 81.110 Georgetown Intrastate Air Quality Control Region
Section 81.111 Charleston Intrastate Air Quality Control Region
Section 81.112 Savannah (Georgia)-Beaufort (South Carolina) Interstate Air Quality Control Region
Section 81.113 Augusta (Georgia)-Aiken (South Carolina) Interstate Air Quality Control Region
Section 81.114 Northwest Nevada Intrastate Air Quality Control Region
Section 81.115 Northern Missouri Intrastate Air Quality Control Region
Section 81.116 Southeast Missouri Intrastate Air Quality Control Region
Section 81.117 Southwest Missouri Intrastate Air Quality Control Region
Section 81.118 Western Tennessee Intrastate Air Quality Control Region
Section 81.119 Middle Tennessee Intrastate Air Quality Control Region
Section 81.120 Four Corners Interstate Air Quality Control Region
Section 81.121 Mississippi Delta Intrastate Air Quality Control Region
Section 81.122 Southeastern Oklahoma Intrastate Air Quality Control Region
Section 81.123 North Central Oklahoma Intrastate Air Quality Control Region
Section 81.124 Southwestern Oklahoma Intrastate Air Quality Control Region
Section 81.125 Northwestern Oklahoma Intrastate Air Quality Control Region
Section 81.126 Central New York Intrastate Air Quality Control Region
Section 81.127 Genesee-Finger Lakes Intrastate Air Quality Control Region
Section 81.128 Hudson Valley Intrastate Air Quality Control Region
Section 81.129 Southern Tier East Intrastate Air Quality Control Region
Section 81.130 Southern Tier West Intrastate Air Quality Control Region
Section 81.131 Abilene-Wichita Falls Intrastate Air Quality Control Region
Section 81.132 Amarillo-Lubbock Intrastate Air Quality Control Region
Section 81.133 Austin-Waco Intrastate Air Quality Control Region
Section 81.134 Brownsville-Laredo Intrastate Air Quality Control Region
Section 81.135 Corpus Christi-Victoria Intrastate Air Quality Control Region
Section 81.136 Midland-Odessa-San Angelo Intrastate Air Quality Control Region
Section 81.137 Central Arkansas Intrastate Air Quality Control Region
Section 81.138 Northeast Arkansas Intrastate Air Quality Control Region
Section 81.139 Northwest Arkansas Intrastate Air Quality Control Region
Section 81.140 Berkshire Intrastate Air Quality Control Region
Section 81.141 Central Massachusetts Intrastate Air Quality Control Region
Section 81.142 Central Virginia Intrastate Air Quality Control Region
Section 81.143 Northeastern Virginia Intrastate Air Quality Control Region
Section 81.144 State Capital Intrastate Air Quality Control Region
Section 81.145 Valley of Virginia Intrastate Air Quality Control Region
Section 81.146 Eastern Mountain Intrastate Air Quality Control Region
Section 81.147 Eastern Piedmont Intrastate Air Quality Control Region
Section 81.148 Northern Coastal Plain Intrastate Air Quality Control Region
Section 81.149 Northern Piedmont Intrastate Air Quality Control Region
Section 81.150 Sandhills Intrastate Air Quality Control Region
Section 81.151 Southern Coastal Plain Intrastate Air Quality Control Region
Section 81.152 Western Mountain Intrastate Air Quality Control Region
Section 81.153 Eastern Shore Intrastate Air Quality Control Region
Section 81.154 Central Maryland Intrastate Air Quality Control Region
Section 81.155 Southern Maryland Intrastate Air Quality Control Region
Section 81.156 North Central Wisconsin Intrastate Air Quality Control Region
Section 81.157 Southern Wisconsin Intrastate Air Quality Control Region
Section 81.158 Great Basin Valley Intrastate Air Quality Control Region
Section 81.159 North Central Coast Intrastate Air Quality Control Region
Section 81.160 North Coast Intrastate Air Quality Control Region
Section 81.161 Northeast Plateau Intrastate Air Quality Control Region
Section 81.162 Sacramento Valley Intrastate Air Quality Control Region
Section 81.163 San Diego Intrastate Air Quality Control Region
Section 81.164 San Joaquin Valley Intrastate Air Quality Control Region
Section 81.165 South Central Coast Intrastate Air Quality Control Region
Section 81.166 Southeast Desert Intrastate Air Quality Control Region
Section 81.167 Great Falls Intrastate Air Quality Control Region
Section 81.168 Helena Intrastate Air Quality Control Region
Section 81.169 Miles City Intrastate Air Quality Control Region
Section 81.170 Missoula Intrastate Air Quality Control Region
Section 81.171 Comanche Intrastate Air Quality Control Region
Section 81.172 Grand Mesa Intrastate Air Quality Control Region
Section 81.173 Pawnee Intrastate Air Quality Control Region
Section 81.174 San Isabel Intrastate Air Quality Control Region
Section 81.175 San Luis Intrastate Air Quality Control Region
Section 81.176 Yampa Intrastate Air Quality Control Region
Section 81.177 Southern Delaware Intrastate Air Quality Control Region
Section 81.178 Aroostook Intrastate Air Quality Control Region
Section 81.179 Down East Intrastate Air Quality Control Region
Section 81.181 Northwest Maine Intrastate Air Quality Control Region
Section 81.182 Eastern Connecticut Intrastate Air Quality Control Region
Section 81.183 Northwestern Connecticut Intrastate Air Quality Control Region
Section 81.184 Northern Washington Intrastate Air Quality Control Region
Section 81.185 Olympic-Northwest Washington Intrastate Air Quality Control Region
Section 81.187 South Central Washington Intrastate Air Quality Control Region
Section 81.189 Eastern Idaho Intrastate Air Quality Control Region
Section 81.190 Appalachian Intrastate Air Quality Control Region
Section 81.191 Bluegrass Intrastate Air Quality Control Region
Section 81.192 North Central Kentucky Intrastate Air Quality Control Region
Section 81.193 South Central Kentucky Intrastate Air Quality Control Region
Section 81.194 Central Michigan Intrastate Air Quality Control Region
Section 81.195 South Central Michigan Intrastate Air Quality Control Region
Section 81.196 Upper Michigan Intrastate Air Quality Control Region
Section 81.197 East Alabama Intrastate Air Quality Control Region
Section 81.199 Metropolitan Columbus Intrastate Air Quality Control Region
Section 81.200 Mansfield-Marion Intrastate Air Quality Control Region
Section 81.201 Northwest Ohio Intrastate Air Quality Control Region
Section 81.202 Sandusky Intrastate Air Quality Control Region
Section 81.203 Wilmington-Chillicothe-Logan Intrastate Air Quality Control Region
Section 81.204 Zanesville-Cambridge Intrastate Air Quality Control Region
Section 81.205 Casper Intrastate Air Quality Control Region
Section 81.213 Black Hills-Rapid City Intrastate Air Quality Control Region
Section 81.214 East Central Indiana Intrastate Air Quality Control Region
Section 81.215 Northeast Indiana Intrastate Air Quality Control Region
Section 81.216 Southern Indiana Intrastate Air Quality Control Region
Section 81.217 Wabash Valley Intrastate Air Quality Control Region
Section 81.218 Central Oregon Intrastate Air Quality Control Region
Section 81.219 Eastern Oregon Intrastate Air Quality Control Region
Section 81.220 Southwest Oregon Intrastate Air Quality Control Region
Section 81.221 Lincoln-Beatrice-Fairbury Intrastate Air Quality Control Region
Section 81.226 Allegheny Intrastate Air Quality Control Region
Section 81.230 Central West Virginia Intrastate Air Quality Control Region
Section 81.231 Eastern Panhandle Intrastate Air Quality Control Region
Section 81.232 Kanawha Valley Intrastate Air Quality Control Region
Section 81.233 North Central West Virginia Intrastate Air Quality Control Region
Section 81.234 Southern West Virginia Intrastate Air Quality Control Region
Section 81.235 Central Georgia Intrastate Air Quality Control Region
Section 81.236 Northeast Georgia Intrastate Air Quality Control Region
Section 81.237 Southwest Georgia Intrastate Air Quality Control Region
Section 81.238 Upper Rio Grande Valley Intrastate Air Quality Control Region
Section 81.239 Northeastern Plains Intrastate Air Quality Control Region
Section 81.240 Southwestern Mountains-Augustine Plains Intrastate Air Quality Control Region
Section 81.241 Pecos-Permian Basin Intrastate Air Quality Control Region
Section 81.242 Central Minnesota Intrastate Air Quality Control Region
Section 81.243 Northwest Minnesota Intrastate Air Quality Control Region
Section 81.244 Southwest Minnesota Intrastate Air Quality Control Region
Section 81.245 Northern Alaska Intrastate Air Quality Control Region
Section 81.246 South Central Alaska Intrastate Air Quality Control Region
Section 81.247 Southeastern Alaska Intrastate Air Quality Control Region
Section 81.248 Northwest Oregon Intrastate Air Quality Control Region
Section 81.249 North Central Kansas Intrastate Air Quality Control Region
Section 81.250 Northeast Kansas Intrastate Air Quality Control Region
Section 81.251 Northwest Kansas Intrastate Air Quality Control Region
Section 81.252 South Central Kansas Intrastate Air Quality Control Region
Section 81.253 Southeast Kansas Intrastate Air Quality Control Region
Section 81.254 Southwest Kansas Intrastate Air Quality Control Region
Section 81.255 Northeast Iowa Intrastate Air Quality Control Region
Section 81.256 North Central Iowa Intrastate Air Quality Control Region
Section 81.257 Northwest Iowa Intrastate Air Quality Control Region
Section 81.258 Southwest Iowa Intrastate Air Quality Control Region
Section 81.259 South Central Iowa Intrastate Air Quality Control Region
Section 81.260 Southeast Iowa Intrastate Air Quality Control Region
Section 81.261 North Central Illinois Intrastate Air Quality Control Region
Section 81.262 East Central Illinois Intrastate Air Quality Control Region
Section 81.263 West Central Illinois Intrastate Air Quality Control Region
Section 81.264 Southeast Illinois Intrastate Air Quality Control Region
Section 81.265 Alabama and Tombigbee Rivers Intrastate Air Quality Control Region
Section 81.266 Southeast Alabama Intrastate Air Quality Control Region
Section 81.267 Mohave-Yuma Intrastate Air Quality Control Region
Section 81.268 Pima Intrastate Air Quality Control Region
Section 81.269 Northern Arizona Intrastate Air Quality Control Region
Section 81.270 Central Arizona Intrastate Air Quality Control Region
Section 81.271 Southeast Arizona Intrastate Air Quality Control Region
Section 81.272 Lake County Intrastate Air Quality Control Region
Section 81.273 Mountain Counties Intrastate Air Quality Control Region
Section 81.274 Lake Tahoe Intrastate Air Quality Control Region
Section 81.275 Scope
Section 81.300 Alabama
Section 81.301 Alaska
Section 81.302 Arizona
Section 81.303 Arkansas
Section 81.304 California
Section 81.305 Colorado
Section 81.306 Connecticut
Section 81.307 Delaware
Section 81.308 District of Columbia
Section 81.309 Florida
Section 81.310 Georgia
Section 81.311 Hawaii
Section 81.312 Idaho
Section 81.313 Illinois
Section 81.314 Indiana
Section 81.315 Iowa
Section 81.316 Kansas
Section 81.317 Kentucky
Section 81.318 Louisiana
Section 81.319 Maine
Section 81.320 Maryland
Section 81.321 Massachusetts
Section 81.322 Michigan
Section 81.323 Minnesota
Section 81.324 Mississippi
Section 81.325 Missouri
Section 81.326 Montana
Section 81.327 Nebraska
Section 81.328 Nevada
Section 81.329 New Hampshire
Section 81.330 New Jersey
Section 81.331 New Mexico
Section 81.332 New York
Section 81.333 North Carolina
Section 81.334 North Dakota
Section 81.335 Ohio
Section 81.336 Oklahoma
Section 81.337 Oregon
Section 81.338 Pennsylvania
Section 81.339 Rhode Island
Section 81.340 South Carolina
Section 81.341 South Dakota
Section 81.342 Tennessee
Section 81.343 Texas
Section 81.344 Utah
Section 81.345 Vermont
Section 81.346 Virginia
Section 81.347 Washington
Section 81.348 West Virginia
Section 81.349 Wisconsin
Section 81.350 Wyoming
Section 81.351 American Samoa
Section 81.352 Guam
Section 81.353 Northern Mariana Islands
Section 81.354 Puerto Rico
Section 81.355 Virgin Islands
Section 81.356 Scope
Section 81.400 Alabama
Section 81.401 Alaska
Section 81.402 Arizona
Section 81.403 Arkansas
Section 81.404 California
Section 81.405 Colorado
Section 81.406 Florida
Section 81.407 Georgia
Section 81.408 Hawaii
Section 81.409 Idaho
Section 81.410 Kentucky
Section 81.411 Louisiana
Section 81.412 Maine
Section 81.413 Michigan
Section 81.414 Minnesota
Section 81.415 Missouri
Section 81.416 Montana
Section 81.417 Nevada
Section 81.418 New Hampshire
Section 81.419 New Jersey
Section 81.420 New Mexico
Section 81.421 North Carolina
Section 81.422 North Dakota
Section 81.423 Oklahoma
Section 81.424 Oregon
Section 81.425 South Carolina
Section 81.426 South Dakota
Section 81.427 Tennessee
Section 81.428 Texas
Section 81.429 Utah
Section 81.430 Vermont
Section 81.431 Virgin Islands
Section 81.432 Virginia
Section 81.433 Washington
Section 81.434 West Virginia
Section 81.435 Wyoming
Section 81.436 New Brunswick, Canada
Section 81.437 Purpose and scope