Title 40

PART 81

Part 81 - Designation Of Areas For Air Quality Planning Purposes

PART 81 - DESIGNATION OF AREAS FOR AIR QUALITY PLANNING PURPOSES Authority:42 U.S.C. 7401, et seq. Source:36 FR 22421, Nov. 25, 1971, unless otherwise noted.

40:20.0.1.1.1.1SUBPART A
Subpart A - Meaning of Terms
40:20.0.1.1.1.1.1.1SECTION 81.1
   81.1 Definitions.
40:20.0.1.1.1.2SUBPART B
Subpart B - Designation of Air Quality Control Regions
40:20.0.1.1.1.2.1.1SECTION 81.11
   81.11 Scope.
40:20.0.1.1.1.2.1.2SECTION 81.12
   81.12 National Capital Interstate Air Quality Control Region (District of Columbia, Maryland, and Virginia).
40:20.0.1.1.1.2.1.3SECTION 81.13
   81.13 New Jersey-New York-Connecticut Interstate Air Quality Control Region.
40:20.0.1.1.1.2.1.4SECTION 81.14
   81.14 Metropolitan Chicago Interstate Air Quality Control Region.
40:20.0.1.1.1.2.1.5SECTION 81.15
   81.15 Metropolitan Philadelphia Interstate Air Quality Control Region (Pennsylvania-New Jersey-Delaware).
40:20.0.1.1.1.2.1.6SECTION 81.16
   81.16 Metropolitan Denver Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.7SECTION 81.17
   81.17 Metropolitan Los Angeles Air Quality Control Region.
40:20.0.1.1.1.2.1.8SECTION 81.18
   81.18 Metropolitan St. Louis Interstate Air Quality Control Region.
40:20.0.1.1.1.2.1.9SECTION 81.19
   81.19 Metropolitan Boston Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.10SECTION 81.20
   81.20 Metropolitan Cincinnati Interstate Air Quality Control Region.
40:20.0.1.1.1.2.1.11SECTION 81.21
   81.21 San Francisco Bay Area Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.12SECTION 81.22
   81.22 Greater Metropolitan Cleveland Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.13SECTION 81.23
   81.23 Southwest Pennsylvania Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.14SECTION 81.24
   81.24 Niagara Frontier Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.15SECTION 81.25
   81.25 Metropolitan Kansas City Interstate Air Quality Control Region.
40:20.0.1.1.1.2.1.16SECTION 81.26
   81.26 Hartford-New Haven-Springfield Interstate Air Quality Control Region.
40:20.0.1.1.1.2.1.17SECTION 81.27
   81.27 Minneapolis-St. Paul Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.18SECTION 81.28
   81.28 Metropolitan Baltimore Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.19SECTION 81.29
   81.29 Metropolitan Indianapolis Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.20SECTION 81.30
   81.30 Southeastern Wisconsin Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.21SECTION 81.31
   81.31 Metropolitan Providence Interstate Air Quality Control Region.
40:20.0.1.1.1.2.1.22SECTION 81.32
   81.32 Puget Sound Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.23SECTION 81.33
   81.33 Steubenville-Weirton-Wheeling Interstate Air Quality Control Region.
40:20.0.1.1.1.2.1.24SECTION 81.34
   81.34 Metropolitan Dayton Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.25SECTION 81.35
   81.35 Louisville Interstate Air Quality Control Region.
40:20.0.1.1.1.2.1.26SECTION 81.36
   81.36 Maricopa Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.27SECTION 81.37
   81.37 Metropolitan Detroit-Port Huron Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.28SECTION 81.38
   81.38 Metropolitan Houston-Galveston Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.29SECTION 81.39
   81.39 Metropolitan Dallas-Fort Worth Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.30SECTION 81.40
   81.40 Metropolitan San Antonio Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.31SECTION 81.41
   81.41 Metropolitan Birmingham Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.32SECTION 81.42
   81.42 Chattanooga Interstate Air Quality Control Region.
40:20.0.1.1.1.2.1.33SECTION 81.43
   81.43 Metropolitan Toledo Interstate Air Quality Control Region.
40:20.0.1.1.1.2.1.34SECTION 81.44
   81.44 Metropolitan Memphis Interstate Air Quality Control Region.
40:20.0.1.1.1.2.1.35SECTION 81.45
   81.45 Metropolitan Atlanta Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.36SECTION 81.46
   81.46 U.S. Virgin Islands Air Quality Control Region.
40:20.0.1.1.1.2.1.37SECTION 81.47
   81.47 Central Oklahoma Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.38SECTION 81.48
   81.48 Champlain Valley Interstate Air Quality Control Region.
40:20.0.1.1.1.2.1.39SECTION 81.49
   81.49 Southeast Florida Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.40SECTION 81.50
   81.50 Metropolitan Omaha-Council Bluffs Interstate Air Quality Control Region.
40:20.0.1.1.1.2.1.41SECTION 81.51
   81.51 Portland Interstate Air Quality Control Region.
40:20.0.1.1.1.2.1.42SECTION 81.52
   81.52 Wasatch Front Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.43SECTION 81.53
   81.53 Southern Louisiana-Southeast Texas Interstate Air Quality Control Region.
40:20.0.1.1.1.2.1.44SECTION 81.54
   81.54 Cook Inlet Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.45SECTION 81.55
   81.55 Northeast Pennsylvania-Upper Delaware Valley Interstate Air Quality Control Region.
40:20.0.1.1.1.2.1.46SECTION 81.57
   81.57 Eastern Tennessee-Southwestern Virginia Interstate Air Quality Control Region.
40:20.0.1.1.1.2.1.47SECTION 81.58
   81.58 Columbus (Georgia)-Phenix City (Alabama) Interstate Air Quality Control Region.
40:20.0.1.1.1.2.1.48SECTION 81.59
   81.59 Cumberland-Keyser Interstate Air Quality Control Region.
40:20.0.1.1.1.2.1.49SECTION 81.60
   81.60 Duluth (Minnesota)-Superior (Wisconsin) Interstate Air Quality Control Region.
40:20.0.1.1.1.2.1.50SECTION 81.61
   81.61 Evansville (Indiana)-Owensboro-Henderson (Kentucky) Interstate Air Quality Control Region.
40:20.0.1.1.1.2.1.51SECTION 81.62
   81.62 Northeast Mississippi Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.52SECTION 81.63
   81.63 Metropolitan Fort Smith Interstate Air Quality Control Region.
40:20.0.1.1.1.2.1.53SECTION 81.64
   81.64 Huntington (West Virginia)-Ashland (Kentucky)-Portsmouth-Ironton (Ohio) Interstate Air Quality Control Region.
40:20.0.1.1.1.2.1.54SECTION 81.65
   81.65 Joplin (Missouri)-Northeast Oklahoma Interstate Air Quality Control Region.
40:20.0.1.1.1.2.1.55SECTION 81.66
   81.66 Southeast Minnesota-La Crosse (Wisconsin) Interstate Air Quality Control Region.
40:20.0.1.1.1.2.1.56SECTION 81.67
   81.67 Lake Michigan Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.57SECTION 81.68
   81.68 Mobile (Alabama)-Pensacola-Panama City (Florida)-Southern Mississippi Interstate Air Quality Control Region.
40:20.0.1.1.1.2.1.58SECTION 81.69
   81.69 Paducah (Kentucky)-Cairo (Illinois) Interstate Air Quality Control Region.
40:20.0.1.1.1.2.1.59SECTION 81.70
   81.70 Parkersburg (West Virginia)-Marietta (Ohio) Interstate Air Quality Control Region.
40:20.0.1.1.1.2.1.60SECTION 81.71
   81.71 Rockford (Illinois)-Janesville-Beloit (Wisconsin) Interstate Air Quality Control Region.
40:20.0.1.1.1.2.1.61SECTION 81.72
   81.72 Tennessee River Valley (Alabama)-Cumberland Mountains (Tennessee) Interstate Air Quality Control Region.
40:20.0.1.1.1.2.1.62SECTION 81.73
   81.73 South Bend-Elkhart (Indiana)-Benton Harbor (Michigan) Interstate Air Quality Control Region.
40:20.0.1.1.1.2.1.63SECTION 81.74
   81.74 Northwest Pennsylvania-Youngstown Interstate Air Quality Control Region.
40:20.0.1.1.1.2.1.64SECTION 81.75
   81.75 Metropolitan Charlotte Interstate Air Quality Control Region.
40:20.0.1.1.1.2.1.65SECTION 81.76
   81.76 State of Hawaii Air Quality Control Region.
40:20.0.1.1.1.2.1.66SECTION 81.77
   81.77 Puerto Rico Air Quality Control Region.
40:20.0.1.1.1.2.1.67SECTION 81.78
   81.78 Metropolitan Portland Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.68SECTION 81.79
   81.79 Northeastern Oklahoma Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.69SECTION 81.80
   81.80 Las Vegas Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.70SECTION 81.81
   81.81 Merrimack Valley-Southern New Hampshire Interstate Air Quality Control Region.
40:20.0.1.1.1.2.1.71SECTION 81.82
   81.82 El Paso-Las Cruces-Alamogordo Interstate Air Quality Control Region.
40:20.0.1.1.1.2.1.72SECTION 81.83
   81.83 Albuquerque-Mid Rio Grande Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.73SECTION 81.84
   81.84 Metropolitan Fargo-Moorhead Interstate Air Quality Control Region.
40:20.0.1.1.1.2.1.74SECTION 81.85
   81.85 Metropolitan Sioux Falls Interstate Air Quality Control Region.
40:20.0.1.1.1.2.1.75SECTION 81.86
   81.86 Metropolitan Sioux City Interstate Air Quality Control Region.
40:20.0.1.1.1.2.1.76SECTION 81.87
   81.87 Metropolitan Boise Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.77SECTION 81.88
   81.88 Billings Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.78SECTION 81.89
   81.89 Metropolitan Cheyenne Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.79SECTION 81.90
   81.90 Androscoggin Valley Interstate Air Quality Control Region.
40:20.0.1.1.1.2.1.80SECTION 81.91
   81.91 Jacksonville (Florida)-Brunswick (Georgia) Interstate Air Quality Control Region.
40:20.0.1.1.1.2.1.81SECTION 81.92
   81.92 Monroe (Louisiana) - El Dorado (Arkansas) Interstate Air Quality Control Region.
40:20.0.1.1.1.2.1.82SECTION 81.93
   81.93 Hampton Roads Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.83SECTION 81.94
   81.94 Shreveport-Texarkana-Tyler Interstate Air Quality Control Region.
40:20.0.1.1.1.2.1.84SECTION 81.95
   81.95 Central Florida Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.85SECTION 81.96
   81.96 West Central Florida Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.86SECTION 81.97
   81.97 Southwest Florida Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.87SECTION 81.98
   81.98 Burlington-Keokuk Interstate Air Quality Control Region.
40:20.0.1.1.1.2.1.88SECTION 81.99
   81.99 New Mexico Southern Border Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.89SECTION 81.100
   81.100 Eastern Washington-Northern Idaho Interstate Air Quality Control Region.
40:20.0.1.1.1.2.1.90SECTION 81.101
   81.101 Metropolitan Dubuque Interstate Air Quality Control Region.
40:20.0.1.1.1.2.1.91SECTION 81.102
   81.102 Metropolitan Quad Cities Interstate Air Quality Control Region.
40:20.0.1.1.1.2.1.92SECTION 81.104
   81.104 Central Pennsylvania Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.93SECTION 81.105
   81.105 South Central Pennsylvania Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.94SECTION 81.106
   81.106 Greenville-Spartanburg Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.95SECTION 81.107
   81.107 Greenwood Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.96SECTION 81.108
   81.108 Columbia Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.97SECTION 81.109
   81.109 Florence Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.98SECTION 81.110
   81.110 Camden-Sumter Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.99SECTION 81.111
   81.111 Georgetown Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.100SECTION 81.112
   81.112 Charleston Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.101SECTION 81.113
   81.113 Savannah (Georgia)-Beaufort (South Carolina) Interstate Air Quality Control Region.
40:20.0.1.1.1.2.1.102SECTION 81.114
   81.114 Augusta (Georgia)-Aiken (South Carolina) Interstate Air Quality Control Region.
40:20.0.1.1.1.2.1.103SECTION 81.115
   81.115 Northwest Nevada Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.104SECTION 81.116
   81.116 Northern Missouri Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.105SECTION 81.117
   81.117 Southeast Missouri Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.106SECTION 81.118
   81.118 Southwest Missouri Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.107SECTION 81.119
   81.119 Western Tennessee Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.108SECTION 81.120
   81.120 Middle Tennessee Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.109SECTION 81.121
   81.121 Four Corners Interstate Air Quality Control Region.
40:20.0.1.1.1.2.1.110SECTION 81.122
   81.122 Mississippi Delta Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.111SECTION 81.123
   81.123 Southeastern Oklahoma Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.112SECTION 81.124
   81.124 North Central Oklahoma Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.113SECTION 81.125
   81.125 Southwestern Oklahoma Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.114SECTION 81.126
   81.126 Northwestern Oklahoma Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.115SECTION 81.127
   81.127 Central New York Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.116SECTION 81.128
   81.128 Genesee-Finger Lakes Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.117SECTION 81.129
   81.129 Hudson Valley Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.118SECTION 81.130
   81.130 Southern Tier East Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.119SECTION 81.131
   81.131 Southern Tier West Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.120SECTION 81.132
   81.132 Abilene-Wichita Falls Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.121SECTION 81.133
   81.133 Amarillo-Lubbock Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.122SECTION 81.134
   81.134 Austin-Waco Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.123SECTION 81.135
   81.135 Brownsville-Laredo Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.124SECTION 81.136
   81.136 Corpus Christi-Victoria Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.125SECTION 81.137
   81.137 Midland-Odessa-San Angelo Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.126SECTION 81.138
   81.138 Central Arkansas Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.127SECTION 81.139
   81.139 Northeast Arkansas Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.128SECTION 81.140
   81.140 Northwest Arkansas Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.129SECTION 81.141
   81.141 Berkshire Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.130SECTION 81.142
   81.142 Central Massachusetts Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.131SECTION 81.143
   81.143 Central Virginia Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.132SECTION 81.144
   81.144 Northeastern Virginia Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.133SECTION 81.145
   81.145 State Capital Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.134SECTION 81.146
   81.146 Valley of Virginia Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.135SECTION 81.147
   81.147 Eastern Mountain Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.136SECTION 81.148
   81.148 Eastern Piedmont Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.137SECTION 81.149
   81.149 Northern Coastal Plain Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.138SECTION 81.150
   81.150 Northern Piedmont Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.139SECTION 81.151
   81.151 Sandhills Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.140SECTION 81.152
   81.152 Southern Coastal Plain Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.141SECTION 81.153
   81.153 Western Mountain Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.142SECTION 81.154
   81.154 Eastern Shore Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.143SECTION 81.155
   81.155 Central Maryland Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.144SECTION 81.156
   81.156 Southern Maryland Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.145SECTION 81.157
   81.157 North Central Wisconsin Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.146SECTION 81.158
   81.158 Southern Wisconsin Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.147SECTION 81.159
   81.159 Great Basin Valley Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.148SECTION 81.160
   81.160 North Central Coast Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.149SECTION 81.161
   81.161 North Coast Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.150SECTION 81.162
   81.162 Northeast Plateau Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.151SECTION 81.163
   81.163 Sacramento Valley Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.152SECTION 81.164
   81.164 San Diego Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.153SECTION 81.165
   81.165 San Joaquin Valley Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.154SECTION 81.166
   81.166 South Central Coast Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.155SECTION 81.167
   81.167 Southeast Desert Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.156SECTION 81.168
   81.168 Great Falls Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.157SECTION 81.169
   81.169 Helena Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.158SECTION 81.170
   81.170 Miles City Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.159SECTION 81.171
   81.171 Missoula Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.160SECTION 81.172
   81.172 Comanche Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.161SECTION 81.173
   81.173 Grand Mesa Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.162SECTION 81.174
   81.174 Pawnee Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.163SECTION 81.175
   81.175 San Isabel Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.164SECTION 81.176
   81.176 San Luis Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.165SECTION 81.177
   81.177 Yampa Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.166SECTION 81.178
   81.178 Southern Delaware Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.167SECTION 81.179
   81.179 Aroostook Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.168SECTION 81.181
   81.181 Down East Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.169SECTION 81.182
   81.182 Northwest Maine Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.170SECTION 81.183
   81.183 Eastern Connecticut Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.171SECTION 81.184
   81.184 Northwestern Connecticut Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.172SECTION 81.185
   81.185 Northern Washington Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.173SECTION 81.187
   81.187 Olympic-Northwest Washington Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.174SECTION 81.189
   81.189 South Central Washington Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.175SECTION 81.190
   81.190 Eastern Idaho Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.176SECTION 81.191
   81.191 Appalachian Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.177SECTION 81.192
   81.192 Bluegrass Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.178SECTION 81.193
   81.193 North Central Kentucky Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.179SECTION 81.194
   81.194 South Central Kentucky Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.180SECTION 81.195
   81.195 Central Michigan Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.181SECTION 81.196
   81.196 South Central Michigan Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.182SECTION 81.197
   81.197 Upper Michigan Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.183SECTION 81.199
   81.199 East Alabama Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.184SECTION 81.200
   81.200 Metropolitan Columbus Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.185SECTION 81.201
   81.201 Mansfield-Marion Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.186SECTION 81.202
   81.202 Northwest Ohio Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.187SECTION 81.203
   81.203 Sandusky Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.188SECTION 81.204
   81.204 Wilmington-Chillicothe-Logan Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.189SECTION 81.205
   81.205 Zanesville-Cambridge Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.190SECTION 81.213
   81.213 Casper Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.191SECTION 81.214
   81.214 Black Hills-Rapid City Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.192SECTION 81.215
   81.215 East Central Indiana Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.193SECTION 81.216
   81.216 Northeast Indiana Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.194SECTION 81.217
   81.217 Southern Indiana Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.195SECTION 81.218
   81.218 Wabash Valley Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.196SECTION 81.219
   81.219 Central Oregon Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.197SECTION 81.220
   81.220 Eastern Oregon Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.198SECTION 81.221
   81.221 Southwest Oregon Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.199SECTION 81.226
   81.226 Lincoln-Beatrice-Fairbury Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.200SECTION 81.230
   81.230 Allegheny Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.201SECTION 81.231
   81.231 Central West Virginia Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.202SECTION 81.232
   81.232 Eastern Panhandle Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.203SECTION 81.233
   81.233 Kanawha Valley Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.204SECTION 81.234
   81.234 North Central West Virginia Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.205SECTION 81.235
   81.235 Southern West Virginia Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.206SECTION 81.236
   81.236 Central Georgia Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.207SECTION 81.237
   81.237 Northeast Georgia Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.208SECTION 81.238
   81.238 Southwest Georgia Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.209SECTION 81.239
   81.239 Upper Rio Grande Valley Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.210SECTION 81.240
   81.240 Northeastern Plains Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.211SECTION 81.241
   81.241 Southwestern Mountains-Augustine Plains Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.212SECTION 81.242
   81.242 Pecos-Permian Basin Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.213SECTION 81.243
   81.243 Central Minnesota Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.214SECTION 81.244
   81.244 Northwest Minnesota Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.215SECTION 81.245
   81.245 Southwest Minnesota Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.216SECTION 81.246
   81.246 Northern Alaska Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.217SECTION 81.247
   81.247 South Central Alaska Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.218SECTION 81.248
   81.248 Southeastern Alaska Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.219SECTION 81.249
   81.249 Northwest Oregon Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.220SECTION 81.250
   81.250 North Central Kansas Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.221SECTION 81.251
   81.251 Northeast Kansas Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.222SECTION 81.252
   81.252 Northwest Kansas Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.223SECTION 81.253
   81.253 South Central Kansas Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.224SECTION 81.254
   81.254 Southeast Kansas Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.225SECTION 81.255
   81.255 Southwest Kansas Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.226SECTION 81.256
   81.256 Northeast Iowa Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.227SECTION 81.257
   81.257 North Central Iowa Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.228SECTION 81.258
   81.258 Northwest Iowa Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.229SECTION 81.259
   81.259 Southwest Iowa Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.230SECTION 81.260
   81.260 South Central Iowa Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.231SECTION 81.261
   81.261 Southeast Iowa Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.232SECTION 81.262
   81.262 North Central Illinois Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.233SECTION 81.263
   81.263 East Central Illinois Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.234SECTION 81.264
   81.264 West Central Illinois Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.235SECTION 81.265
   81.265 Southeast Illinois Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.236SECTION 81.266
   81.266 Alabama and Tombigbee Rivers Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.237SECTION 81.267
   81.267 Southeast Alabama Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.238SECTION 81.268
   81.268 Mohave-Yuma Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.239SECTION 81.269
   81.269 Pima Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.240SECTION 81.270
   81.270 Northern Arizona Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.241SECTION 81.271
   81.271 Central Arizona Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.242SECTION 81.272
   81.272 Southeast Arizona Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.243SECTION 81.273
   81.273 Lake County Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.244SECTION 81.274
   81.274 Mountain Counties Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.245SECTION 81.275
   81.275 Lake Tahoe Intrastate Air Quality Control Region.
40:20.0.1.1.1.2.1.246SECTION 81.276
   81.276 Nevada Intrastate Air Quality Control Region.
40:20.0.1.1.1.3SUBPART C
Subpart C - Section 107 Attainment Status Designations
40:20.0.1.1.1.3.1.1SECTION 81.300
   81.300 Scope.
40:20.0.1.1.1.3.1.2SECTION 81.301
   81.301 Alabama.
40:20.0.1.1.1.3.1.3SECTION 81.302
   81.302 Alaska.
40:20.0.1.1.1.3.1.4SECTION 81.303
   81.303 Arizona.
40:20.0.1.1.1.3.1.5SECTION 81.304
   81.304 Arkansas.
40:20.0.1.1.1.3.1.6SECTION 81.305
   81.305 California.
40:20.0.1.1.1.3.1.7SECTION 81.306
   81.306 Colorado.
40:20.0.1.1.1.3.1.8SECTION 81.307
   81.307 Connecticut.
40:20.0.1.1.1.3.1.9SECTION 81.308
   81.308 Delaware.
40:20.0.1.1.1.3.1.10SECTION 81.309
   81.309 District of Columbia.
40:20.0.1.1.1.3.1.11SECTION 81.310
   81.310 Florida.
40:20.0.1.1.1.3.1.12SECTION 81.311
   81.311 Georgia.
40:20.0.1.1.1.3.1.13SECTION 81.312
   81.312 Hawaii.
40:20.0.1.1.1.3.1.14SECTION 81.313
   81.313 Idaho.
40:20.0.1.1.1.3.1.15SECTION 81.314
   81.314 Illinois.
40:20.0.1.1.1.3.1.16SECTION 81.315
   81.315 Indiana.
40:20.0.1.1.1.3.1.17SECTION 81.316
   81.316 Iowa.
40:20.0.1.1.1.3.1.18SECTION 81.317
   81.317 Kansas.
40:20.0.1.1.1.3.1.19SECTION 81.318
   81.318 Kentucky.
40:20.0.1.1.1.3.1.20SECTION 81.319
   81.319 Louisiana.
40:20.0.1.1.1.3.1.21SECTION 81.320
   81.320 Maine.
40:20.0.1.1.1.3.1.22SECTION 81.321
   81.321 Maryland.
40:20.0.1.1.1.3.1.23SECTION 81.322
   81.322 Massachusetts.
40:20.0.1.1.1.3.1.24SECTION 81.323
   81.323 Michigan.
40:20.0.1.1.1.3.1.25SECTION 81.324
   81.324 Minnesota.
40:20.0.1.1.1.3.1.26SECTION 81.325
   81.325 Mississippi.
40:20.0.1.1.1.3.1.27SECTION 81.326
   81.326 Missouri.
40:20.0.1.1.1.3.1.28SECTION 81.327
   81.327 Montana.
40:20.0.1.1.1.3.1.29SECTION 81.328
   81.328 Nebraska.
40:20.0.1.1.1.3.1.30SECTION 81.329
   81.329 Nevada.
40:20.0.1.1.1.3.1.31SECTION 81.330
   81.330 New Hampshire.
40:20.0.1.1.1.3.1.32SECTION 81.331
   81.331 New Jersey.
40:20.0.1.1.1.3.1.33SECTION 81.332
   81.332 New Mexico.
40:20.0.1.1.1.3.1.34SECTION 81.333
   81.333 New York.
40:20.0.1.1.1.3.1.35SECTION 81.334
   81.334 North Carolina.
40:20.0.1.1.1.3.1.36SECTION 81.335
   81.335 North Dakota.
40:20.0.1.1.1.3.1.37SECTION 81.336
   81.336 Ohio.
40:20.0.1.1.1.3.1.38SECTION 81.337
   81.337 Oklahoma.
40:20.0.1.1.1.3.1.39SECTION 81.338
   81.338 Oregon.
40:20.0.1.1.1.3.1.40SECTION 81.339
   81.339 Pennsylvania.
40:20.0.1.1.1.3.1.41SECTION 81.340
   81.340 Rhode Island.
40:20.0.1.1.1.3.1.42SECTION 81.341
   81.341 South Carolina.
40:20.0.1.1.1.3.1.44SECTION 81.342
   81.342 South Dakota.
40:20.0.1.1.1.3.1.45SECTION 81.343
   81.343 Tennessee.
40:20.0.1.1.1.3.1.46SECTION 81.344
   81.344 Texas.
40:20.0.1.1.1.3.1.47SECTION 81.345
   81.345 Utah.
40:20.0.1.1.1.3.1.48SECTION 81.346
   81.346 Vermont.
40:20.0.1.1.1.3.1.49SECTION 81.347
   81.347 Virginia.
40:20.0.1.1.1.3.1.50SECTION 81.348
   81.348 Washington.
40:20.0.1.1.1.3.1.51SECTION 81.349
   81.349 West Virginia.
40:20.0.1.1.1.3.1.52SECTION 81.350
   81.350 Wisconsin.
40:20.0.1.1.1.3.1.53SECTION 81.351
   81.351 Wyoming.
40:20.0.1.1.1.3.1.54SECTION 81.352
   81.352 American Samoa.
40:20.0.1.1.1.3.1.55SECTION 81.353
   81.353 Guam.
40:20.0.1.1.1.3.1.56SECTION 81.354
   81.354 Northern Mariana Islands.
40:20.0.1.1.1.3.1.57SECTION 81.355
   81.355 Puerto Rico.
40:20.0.1.1.1.3.1.58SECTION 81.356
   81.356 Virgin Islands.
40:20.0.1.1.1.4SUBPART D
Subpart D - Identification of Mandatory Class I Federal Areas Where Visibility Is an Important Value
40:20.0.1.1.1.4.1.1SECTION 81.400
   81.400 Scope.
40:20.0.1.1.1.4.1.2SECTION 81.401
   81.401 Alabama.
40:20.0.1.1.1.4.1.3SECTION 81.402
   81.402 Alaska.
40:20.0.1.1.1.4.1.4SECTION 81.403
   81.403 Arizona.
40:20.0.1.1.1.4.1.5SECTION 81.404
   81.404 Arkansas.
40:20.0.1.1.1.4.1.6SECTION 81.405
   81.405 California.
40:20.0.1.1.1.4.1.7SECTION 81.406
   81.406 Colorado.
40:20.0.1.1.1.4.1.8SECTION 81.407
   81.407 Florida.
40:20.0.1.1.1.4.1.9SECTION 81.408
   81.408 Georgia.
40:20.0.1.1.1.4.1.10SECTION 81.409
   81.409 Hawaii.
40:20.0.1.1.1.4.1.11SECTION 81.410
   81.410 Idaho.
40:20.0.1.1.1.4.1.12SECTION 81.411
   81.411 Kentucky.
40:20.0.1.1.1.4.1.13SECTION 81.412
   81.412 Louisiana.
40:20.0.1.1.1.4.1.14SECTION 81.413
   81.413 Maine.
40:20.0.1.1.1.4.1.15SECTION 81.414
   81.414 Michigan.
40:20.0.1.1.1.4.1.16SECTION 81.415
   81.415 Minnesota.
40:20.0.1.1.1.4.1.17SECTION 81.416
   81.416 Missouri.
40:20.0.1.1.1.4.1.18SECTION 81.417
   81.417 Montana.
40:20.0.1.1.1.4.1.19SECTION 81.418
   81.418 Nevada.
40:20.0.1.1.1.4.1.20SECTION 81.419
   81.419 New Hampshire.
40:20.0.1.1.1.4.1.21SECTION 81.420
   81.420 New Jersey.
40:20.0.1.1.1.4.1.22SECTION 81.421
   81.421 New Mexico.
40:20.0.1.1.1.4.1.23SECTION 81.422
   81.422 North Carolina.
40:20.0.1.1.1.4.1.24SECTION 81.423
   81.423 North Dakota.
40:20.0.1.1.1.4.1.25SECTION 81.424
   81.424 Oklahoma.
40:20.0.1.1.1.4.1.26SECTION 81.425
   81.425 Oregon.
40:20.0.1.1.1.4.1.27SECTION 81.426
   81.426 South Carolina.
40:20.0.1.1.1.4.1.28SECTION 81.427
   81.427 South Dakota.
40:20.0.1.1.1.4.1.29SECTION 81.428
   81.428 Tennessee.
40:20.0.1.1.1.4.1.30SECTION 81.429
   81.429 Texas.
40:20.0.1.1.1.4.1.31SECTION 81.430
   81.430 Utah.
40:20.0.1.1.1.4.1.32SECTION 81.431
   81.431 Vermont.
40:20.0.1.1.1.4.1.33SECTION 81.432
   81.432 Virgin Islands.
40:20.0.1.1.1.4.1.34SECTION 81.433
   81.433 Virginia.
40:20.0.1.1.1.4.1.35SECTION 81.434
   81.434 Washington.
40:20.0.1.1.1.4.1.36SECTION 81.435
   81.435 West Virginia.
40:20.0.1.1.1.4.1.37SECTION 81.436
   81.436 Wyoming.
40:20.0.1.1.1.4.1.38SECTION 81.437
   81.437 New Brunswick, Canada.
40:20.0.1.1.1.4.1.39.1APPENDIX Appendix A
   Appendix A to Part 81 - Air Quality Control Regions (AQCR's)