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Designation of Air Quality Control Regions
Law
CFR 40
Protection of Environment
Environmental Protection Agency
Air Programs
Designation of Areas for Air Quality Planning Purposes
Designation of Air Quality Control Regions
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Section
81.11
Scope.
Section
81.12
National Capital Interstate Air Quality Control Region (District of Columbia, Maryland, and Virginia).
Section
81.13
New Jersey-New York-Connecticut Interstate Air Quality Control Region.
Section
81.14
Metropolitan Chicago Interstate Air Quality Control Region.
Section
81.15
Metropolitan Philadelphia Interstate Air Quality Control Region (Pennsylvania-New Jersey-Delaware).
Section
81.16
Metropolitan Denver Intrastate Air Quality Control Region.
Section
81.17
Metropolitan Los Angeles Air Quality Control Region.
Section
81.18
Metropolitan St. Louis Interstate Air Quality Control Region.
Section
81.19
Metropolitan Boston Intrastate Air Quality Control Region.
Section
81.20
Metropolitan Cincinnati Interstate Air Quality Control Region.
Section
81.21
San Francisco Bay Area Intrastate Air Quality Control Region.
Section
81.22
Greater Metropolitan Cleveland Intrastate Air Quality Control Region.
Section
81.23
Southwest Pennsylvania Intrastate Air Quality Control Region.
Section
81.24
Niagara Frontier Intrastate Air Quality Control Region.
Section
81.25
Metropolitan Kansas City Interstate Air Quality Control Region.
Section
81.26
Hartford-New Haven-Springfield Interstate Air Quality Control Region.
Section
81.27
Minneapolis-St. Paul Intrastate Air Quality Control Region.
Section
81.28
Metropolitan Baltimore Intrastate Air Quality Control Region.
Section
81.29
Metropolitan Indianapolis Intrastate Air Quality Control Region.
Section
81.30
Southeastern Wisconsin Intrastate Air Quality Control Region.
Section
81.31
Metropolitan Providence Interstate Air Quality Control Region.
Section
81.32
Puget Sound Intrastate Air Quality Control Region.
Section
81.33
Steubenville-Weirton-Wheeling Interstate Air Quality Control Region.
Section
81.34
Metropolitan Dayton Intrastate Air Quality Control Region.
Section
81.35
Louisville Interstate Air Quality Control Region.
Section
81.36
Maricopa Intrastate Air Quality Control Region.
Section
81.37
Metropolitan Detroit-Port Huron Intrastate Air Quality Control Region.
Section
81.38
Metropolitan Houston-Galveston Intrastate Air Quality Control Region.
Section
81.39
Metropolitan Dallas-Fort Worth Intrastate Air Quality Control Region.
Section
81.40
Metropolitan San Antonio Intrastate Air Quality Control Region.
Section
81.41
Metropolitan Birmingham Intrastate Air Quality Control Region.
Section
81.42
Chattanooga Interstate Air Quality Control Region.
Section
81.43
Metropolitan Toledo Interstate Air Quality Control Region.
Section
81.44
Metropolitan Memphis Interstate Air Quality Control Region.
Section
81.45
Metropolitan Atlanta Intrastate Air Quality Control Region.
Section
81.46
U.S. Virgin Islands Air Quality Control Region.
Section
81.47
Central Oklahoma Intrastate Air Quality Control Region.
Section
81.48
Champlain Valley Interstate Air Quality Control Region.
Section
81.49
Southeast Florida Intrastate Air Quality Control Region.
Section
81.50
Metropolitan Omaha-Council Bluffs Interstate Air Quality Control Region.
Section
81.51
Portland Interstate Air Quality Control Region.
Section
81.52
Wasatch Front Intrastate Air Quality Control Region.
Section
81.53
Southern Louisiana-Southeast Texas Interstate Air Quality Control Region.
Section
81.54
Cook Inlet Intrastate Air Quality Control Region.
Section
81.55
Northeast Pennsylvania-Upper Delaware Valley Interstate Air Quality Control Region.
Section
81.57
Eastern Tennessee-Southwestern Virginia Interstate Air Quality Control Region.
Section
81.58
Columbus (Georgia)-Phenix City (Alabama) Interstate Air Quality Control Region.
Section
81.59
Cumberland-Keyser Interstate Air Quality Control Region.
Section
81.60
Duluth (Minnesota)-Superior (Wisconsin) Interstate Air Quality Control Region.
Section
81.61
Evansville (Indiana)-Owensboro-Henderson (Kentucky) Interstate Air Quality Control Region.
Section
81.62
Northeast Mississippi Intrastate Air Quality Control Region.
Section
81.63
Metropolitan Fort Smith Interstate Air Quality Control Region.
Section
81.64
Huntington (West Virginia)-Ashland (Kentucky)-Portsmouth-Ironton (Ohio) Interstate Air Quality Control Region.
Section
81.65
Joplin (Missouri)-Northeast Oklahoma Interstate Air Quality Control Region.
Section
81.66
Southeast Minnesota-La Crosse (Wisconsin) Interstate Air Quality Control Region.
Section
81.67
Lake Michigan Intrastate Air Quality Control Region.
Section
81.68
Mobile (Alabama)-Pensacola-Panama City (Florida)-Southern Mississippi Interstate Air Quality Control Region.
Section
81.69
Paducah (Kentucky)-Cairo (Illinois) Interstate Air Quality Control Region.
Section
81.70
Parkersburg (West Virginia)-Marietta (Ohio) Interstate Air Quality Control Region.
Section
81.71
Rockford (Illinois)-Janesville-Beloit (Wisconsin) Interstate Air Quality Control Region.
Section
81.72
Tennessee River Valley (Alabama)-Cumberland Mountains (Tennessee) Interstate Air Quality Control Region.
Section
81.73
South Bend-Elkhart (Indiana)-Benton Harbor (Michigan) Interstate Air Quality Control Region.
Section
81.74
Northwest Pennsylvania-Youngstown Interstate Air Quality Control Region.
Section
81.75
Metropolitan Charlotte Interstate Air Quality Control Region.
Section
81.76
State of Hawaii Air Quality Control Region.
Section
81.77
Puerto Rico Air Quality Control Region.
Section
81.78
Metropolitan Portland Intrastate Air Quality Control Region.
Section
81.79
Northeastern Oklahoma Intrastate Air Quality Control Region.
Section
81.80
Las Vegas Intrastate Air Quality Control Region.
Section
81.81
Merrimack Valley-Southern New Hampshire Interstate Air Quality Control Region.
Section
81.82
El Paso-Las Cruces-Alamogordo Interstate Air Quality Control Region.
Section
81.83
Albuquerque-Mid Rio Grande Intrastate Air Quality Control Region.
Section
81.84
Metropolitan Fargo-Moorhead Interstate Air Quality Control Region.
Section
81.85
Metropolitan Sioux Falls Interstate Air Quality Control Region.
Section
81.86
Metropolitan Sioux City Interstate Air Quality Control Region.
Section
81.87
Metropolitan Boise Intrastate Air Quality Control Region.
Section
81.88
Billings Intrastate Air Quality Control Region.
Section
81.89
Metropolitan Cheyenne Intrastate Air Quality Control Region.
Section
81.90
Androscoggin Valley Interstate Air Quality Control Region.
Section
81.91
Jacksonville (Florida)-Brunswick (Georgia) Interstate Air Quality Control Region.
Section
81.92
Monroe (Louisiana) - El Dorado (Arkansas) Interstate Air Quality Control Region.
Section
81.93
Hampton Roads Intrastate Air Quality Control Region.
Section
81.94
Shreveport-Texarkana-Tyler Interstate Air Quality Control Region.
Section
81.95
Central Florida Intrastate Air Quality Control Region.
Section
81.96
West Central Florida Intrastate Air Quality Control Region.
Section
81.97
Southwest Florida Intrastate Air Quality Control Region.
Section
81.98
Burlington-Keokuk Interstate Air Quality Control Region.
Section
81.99
New Mexico Southern Border Intrastate Air Quality Control Region.
Section
81.100
Eastern Washington-Northern Idaho Interstate Air Quality Control Region.
Section
81.101
Metropolitan Dubuque Interstate Air Quality Control Region.
Section
81.102
Metropolitan Quad Cities Interstate Air Quality Control Region.
Section
81.104
Central Pennsylvania Intrastate Air Quality Control Region.
Section
81.105
South Central Pennsylvania Intrastate Air Quality Control Region.
Section
81.106
Greenville-Spartanburg Intrastate Air Quality Control Region.
Section
81.107
Greenwood Intrastate Air Quality Control Region.
Section
81.108
Columbia Intrastate Air Quality Control Region.
Section
81.109
Florence Intrastate Air Quality Control Region.
Section
81.110
Camden-Sumter Intrastate Air Quality Control Region.
Section
81.111
Georgetown Intrastate Air Quality Control Region.
Section
81.112
Charleston Intrastate Air Quality Control Region.
Section
81.113
Savannah (Georgia)-Beaufort (South Carolina) Interstate Air Quality Control Region.
Section
81.114
Augusta (Georgia)-Aiken (South Carolina) Interstate Air Quality Control Region.
Section
81.115
Northwest Nevada Intrastate Air Quality Control Region.
Section
81.116
Northern Missouri Intrastate Air Quality Control Region.
Section
81.117
Southeast Missouri Intrastate Air Quality Control Region.
Section
81.118
Southwest Missouri Intrastate Air Quality Control Region.
Section
81.119
Western Tennessee Intrastate Air Quality Control Region.
Section
81.120
Middle Tennessee Intrastate Air Quality Control Region.
Section
81.121
Four Corners Interstate Air Quality Control Region.
Section
81.122
Mississippi Delta Intrastate Air Quality Control Region.
Section
81.123
Southeastern Oklahoma Intrastate Air Quality Control Region.
Section
81.124
North Central Oklahoma Intrastate Air Quality Control Region.
Section
81.125
Southwestern Oklahoma Intrastate Air Quality Control Region.
Section
81.126
Northwestern Oklahoma Intrastate Air Quality Control Region.
Section
81.127
Central New York Intrastate Air Quality Control Region.
Section
81.128
Genesee-Finger Lakes Intrastate Air Quality Control Region.
Section
81.129
Hudson Valley Intrastate Air Quality Control Region.
Section
81.130
Southern Tier East Intrastate Air Quality Control Region.
Section
81.131
Southern Tier West Intrastate Air Quality Control Region.
Section
81.132
Abilene-Wichita Falls Intrastate Air Quality Control Region.
Section
81.133
Amarillo-Lubbock Intrastate Air Quality Control Region.
Section
81.134
Austin-Waco Intrastate Air Quality Control Region.
Section
81.135
Brownsville-Laredo Intrastate Air Quality Control Region.
Section
81.136
Corpus Christi-Victoria Intrastate Air Quality Control Region.
Section
81.137
Midland-Odessa-San Angelo Intrastate Air Quality Control Region.
Section
81.138
Central Arkansas Intrastate Air Quality Control Region.
Section
81.139
Northeast Arkansas Intrastate Air Quality Control Region.
Section
81.140
Northwest Arkansas Intrastate Air Quality Control Region.
Section
81.141
Berkshire Intrastate Air Quality Control Region.
Section
81.142
Central Massachusetts Intrastate Air Quality Control Region.
Section
81.143
Central Virginia Intrastate Air Quality Control Region.
Section
81.144
Northeastern Virginia Intrastate Air Quality Control Region.
Section
81.145
State Capital Intrastate Air Quality Control Region.
Section
81.146
Valley of Virginia Intrastate Air Quality Control Region.
Section
81.147
Eastern Mountain Intrastate Air Quality Control Region.
Section
81.148
Eastern Piedmont Intrastate Air Quality Control Region.
Section
81.149
Northern Coastal Plain Intrastate Air Quality Control Region.
Section
81.150
Northern Piedmont Intrastate Air Quality Control Region.
Section
81.151
Sandhills Intrastate Air Quality Control Region.
Section
81.152
Southern Coastal Plain Intrastate Air Quality Control Region.
Section
81.153
Western Mountain Intrastate Air Quality Control Region.
Section
81.154
Eastern Shore Intrastate Air Quality Control Region.
Section
81.155
Central Maryland Intrastate Air Quality Control Region.
Section
81.156
Southern Maryland Intrastate Air Quality Control Region.
Section
81.157
North Central Wisconsin Intrastate Air Quality Control Region.
Section
81.158
Southern Wisconsin Intrastate Air Quality Control Region.
Section
81.159
Great Basin Valley Intrastate Air Quality Control Region.
Section
81.160
North Central Coast Intrastate Air Quality Control Region.
Section
81.161
North Coast Intrastate Air Quality Control Region.
Section
81.162
Northeast Plateau Intrastate Air Quality Control Region.
Section
81.163
Sacramento Valley Intrastate Air Quality Control Region.
Section
81.164
San Diego Intrastate Air Quality Control Region.
Section
81.165
San Joaquin Valley Intrastate Air Quality Control Region.
Section
81.166
South Central Coast Intrastate Air Quality Control Region.
Section
81.167
Southeast Desert Intrastate Air Quality Control Region.
Section
81.168
Great Falls Intrastate Air Quality Control Region.
Section
81.169
Helena Intrastate Air Quality Control Region.
Section
81.170
Miles City Intrastate Air Quality Control Region.
Section
81.171
Missoula Intrastate Air Quality Control Region.
Section
81.172
Comanche Intrastate Air Quality Control Region.
Section
81.173
Grand Mesa Intrastate Air Quality Control Region.
Section
81.174
Pawnee Intrastate Air Quality Control Region.
Section
81.175
San Isabel Intrastate Air Quality Control Region.
Section
81.176
San Luis Intrastate Air Quality Control Region.
Section
81.177
Yampa Intrastate Air Quality Control Region.
Section
81.178
Southern Delaware Intrastate Air Quality Control Region.
Section
81.179
Aroostook Intrastate Air Quality Control Region.
Section
81.181
Down East Intrastate Air Quality Control Region.
Section
81.182
Northwest Maine Intrastate Air Quality Control Region.
Section
81.183
Eastern Connecticut Intrastate Air Quality Control Region.
Section
81.184
Northwestern Connecticut Intrastate Air Quality Control Region.
Section
81.185
Northern Washington Intrastate Air Quality Control Region.
Section
81.187
Olympic-Northwest Washington Intrastate Air Quality Control Region.
Section
81.189
South Central Washington Intrastate Air Quality Control Region.
Section
81.190
Eastern Idaho Intrastate Air Quality Control Region.
Section
81.191
Appalachian Intrastate Air Quality Control Region.
Section
81.192
Bluegrass Intrastate Air Quality Control Region.
Section
81.193
North Central Kentucky Intrastate Air Quality Control Region.
Section
81.194
South Central Kentucky Intrastate Air Quality Control Region.
Section
81.195
Central Michigan Intrastate Air Quality Control Region.
Section
81.196
South Central Michigan Intrastate Air Quality Control Region.
Section
81.197
Upper Michigan Intrastate Air Quality Control Region.
Section
81.199
East Alabama Intrastate Air Quality Control Region.
Section
81.200
Metropolitan Columbus Intrastate Air Quality Control Region.
Section
81.201
Mansfield-Marion Intrastate Air Quality Control Region.
Section
81.202
Northwest Ohio Intrastate Air Quality Control Region.
Section
81.203
Sandusky Intrastate Air Quality Control Region.
Section
81.204
Wilmington-Chillicothe-Logan Intrastate Air Quality Control Region.
Section
81.205
Zanesville-Cambridge Intrastate Air Quality Control Region.
Section
81.213
Casper Intrastate Air Quality Control Region.
Section
81.214
Black Hills-Rapid City Intrastate Air Quality Control Region.
Section
81.215
East Central Indiana Intrastate Air Quality Control Region.
Section
81.216
Northeast Indiana Intrastate Air Quality Control Region.
Section
81.217
Southern Indiana Intrastate Air Quality Control Region.
Section
81.218
Wabash Valley Intrastate Air Quality Control Region.
Section
81.219
Central Oregon Intrastate Air Quality Control Region.
Section
81.220
Eastern Oregon Intrastate Air Quality Control Region.
Section
81.221
Southwest Oregon Intrastate Air Quality Control Region.
Section
81.226
Lincoln-Beatrice-Fairbury Intrastate Air Quality Control Region.
Section
81.230
Allegheny Intrastate Air Quality Control Region.
Section
81.231
Central West Virginia Intrastate Air Quality Control Region.
Section
81.232
Eastern Panhandle Intrastate Air Quality Control Region.
Section
81.233
Kanawha Valley Intrastate Air Quality Control Region.
Section
81.234
North Central West Virginia Intrastate Air Quality Control Region.
Section
81.235
Southern West Virginia Intrastate Air Quality Control Region.
Section
81.236
Central Georgia Intrastate Air Quality Control Region.
Section
81.237
Northeast Georgia Intrastate Air Quality Control Region.
Section
81.238
Southwest Georgia Intrastate Air Quality Control Region.
Section
81.239
Upper Rio Grande Valley Intrastate Air Quality Control Region.
Section
81.240
Northeastern Plains Intrastate Air Quality Control Region.
Section
81.241
Southwestern Mountains-Augustine Plains Intrastate Air Quality Control Region.
Section
81.242
Pecos-Permian Basin Intrastate Air Quality Control Region.
Section
81.243
Central Minnesota Intrastate Air Quality Control Region.
Section
81.244
Northwest Minnesota Intrastate Air Quality Control Region.
Section
81.245
Southwest Minnesota Intrastate Air Quality Control Region.
Section
81.246
Northern Alaska Intrastate Air Quality Control Region.
Section
81.247
South Central Alaska Intrastate Air Quality Control Region.
Section
81.248
Southeastern Alaska Intrastate Air Quality Control Region.
Section
81.249
Northwest Oregon Intrastate Air Quality Control Region.
Section
81.250
North Central Kansas Intrastate Air Quality Control Region.
Section
81.251
Northeast Kansas Intrastate Air Quality Control Region.
Section
81.252
Northwest Kansas Intrastate Air Quality Control Region.
Section
81.253
South Central Kansas Intrastate Air Quality Control Region.
Section
81.254
Southeast Kansas Intrastate Air Quality Control Region.
Section
81.255
Southwest Kansas Intrastate Air Quality Control Region.
Section
81.256
Northeast Iowa Intrastate Air Quality Control Region.
Section
81.257
North Central Iowa Intrastate Air Quality Control Region.
Section
81.258
Northwest Iowa Intrastate Air Quality Control Region.
Section
81.259
Southwest Iowa Intrastate Air Quality Control Region.
Section
81.260
South Central Iowa Intrastate Air Quality Control Region.
Section
81.261
Southeast Iowa Intrastate Air Quality Control Region.
Section
81.262
North Central Illinois Intrastate Air Quality Control Region.
Section
81.263
East Central Illinois Intrastate Air Quality Control Region.
Section
81.264
West Central Illinois Intrastate Air Quality Control Region.
Section
81.265
Southeast Illinois Intrastate Air Quality Control Region.
Section
81.266
Alabama and Tombigbee Rivers Intrastate Air Quality Control Region.
Section
81.267
Southeast Alabama Intrastate Air Quality Control Region.
Section
81.268
Mohave-Yuma Intrastate Air Quality Control Region.
Section
81.269
Pima Intrastate Air Quality Control Region.
Section
81.270
Northern Arizona Intrastate Air Quality Control Region.
Section
81.271
Central Arizona Intrastate Air Quality Control Region.
Section
81.272
Southeast Arizona Intrastate Air Quality Control Region.
Section
81.273
Lake County Intrastate Air Quality Control Region.
Section
81.274
Mountain Counties Intrastate Air Quality Control Region.
Section
81.275
Lake Tahoe Intrastate Air Quality Control Region.
Section
81.276
Nevada Intrastate Air Quality Control Region.