1. Regulations
  2. title 40
  3. chapter I-i19
  4. part 81
  5. subpart C
  6. § 81.337

View all text of Subpart C [§ 81.300 - § 81.356]

§ 81.337 - Oklahoma.

Oklahoma—TSP

Designated area Does not meet primary standards Does not meet secondary standards Cannot be classified Better than national standards AQCR 017X AQCR 022X AQCR 184X AQCR 185X AQCR 186: Tulsa CountyX Portions of Muskogee CountyX Portions of Mayes CountyX Remainder of AQCRX AQCR 187X AQCR 188X AQCR 189: Portion of Comanche CountyX Remainder of AQCRX

Oklahoma—1971 Sulfur Dioxide NAAQS

[Primary and Secondary]

Designated area Does not meet primary standards Does not meet secondary standards Cannot be classified Better than national standards AQCR 017X AQCR 184X AQCR 185X AQCR 186X AQCR 187X AQCR 188X AQCR 189X

Oklahoma—2010 Sulfur Dioxide NAAQS

[Primary]

Designated area 1Designation Date 2Type Adair CountyAttainment/Unclassifiable. Alfalfa CountyAttainment/Unclassifiable. Atoka CountyAttainment/Unclassifiable. Beaver CountyAttainment/Unclassifiable. Beckham CountyAttainment/Unclassifiable. Blaine CountyAttainment/Unclassifiable. Bryan CountyAttainment/Unclassifiable. Caddo CountyAttainment/Unclassifiable. Canadian CountyAttainment/Unclassifiable. Carter CountyAttainment/Unclassifiable. Cherokee CountyAttainment/Unclassifiable. Choctaw County9/12/16Attainment/Unclassifiable. Cimarron CountyAttainment/Unclassifiable. Cleveland CountyAttainment/Unclassifiable. Coal CountyAttainment/Unclassifiable. Comanche CountyAttainment/Unclassifiable. Cotton CountyAttainment/Unclassifiable. Craig CountyAttainment/Unclassifiable. Creek CountyAttainment/Unclassifiable. Custer CountyAttainment/Unclassifiable. Delaware CountyAttainment/Unclassifiable. Dewey CountyAttainment/Unclassifiable. Ellis CountyAttainment/Unclassifiable. Garfield County4/30/2021Attainment/Unclassifiable. Garvin CountyAttainment/Unclassifiable. Grady CountyAttainment/Unclassifiable. Grant CountyAttainment/Unclassifiable. Greer CountyAttainment/Unclassifiable. Harmon CountyAttainment/Unclassifiable. Harper CountyAttainment/Unclassifiable. Haskell CountyAttainment/Unclassifiable. Hughes CountyAttainment/Unclassifiable. Jackson CountyAttainment/Unclassifiable. Jefferson CountyAttainment/Unclassifiable. Johnston CountyAttainment/Unclassifiable. Kay CountyAttainment/Unclassifiable. Kingfisher CountyAttainment/Unclassifiable. Kiowa CountyAttainment/Unclassifiable. Latimer CountyAttainment/Unclassifiable. Le Flore CountyAttainment/Unclassifiable. Lincoln CountyAttainment/Unclassifiable. Logan CountyAttainment/Unclassifiable. Love CountyAttainment/Unclassifiable. McClain CountyAttainment/Unclassifiable. McCurtain CountyAttainment/Unclassifiable. McIntosh CountyAttainment/Unclassifiable. Major CountyAttainment/Unclassifiable. Marshall CountyAttainment/Unclassifiable. Mayes County4/30/2021Attainment/Unclassifiable. Murray CountyAttainment/Unclassifiable. Muskogee County4/30/2021Attainment/Unclassifiable. Noble County9/12/16Attainment/Unclassifiable. Nowata CountyAttainment/Unclassifiable. Okfuskee CountyAttainment/Unclassifiable. Oklahoma CountyAttainment/Unclassifiable. Okmulgee CountyAttainment/Unclassifiable. Osage CountyAttainment/Unclassifiable. Ottawa CountyAttainment/Unclassifiable. Pawnee CountyAttainment/Unclassifiable. Payne CountyAttainment/Unclassifiable. Pittsburg CountyAttainment/Unclassifiable. Pontotoc CountyAttainment/Unclassifiable. Pottawatomie CountyAttainment/Unclassifiable. Pushmataha CountyAttainment/Unclassifiable. Roger Mills CountyAttainment/Unclassifiable. Rogers CountyAttainment/Unclassifiable. Seminole CountyAttainment/Unclassifiable. Sequoyah CountyAttainment/Unclassifiable. Stephens CountyAttainment/Unclassifiable. Texas CountyAttainment/Unclassifiable. Tillman CountyAttainment/Unclassifiable. Tulsa CountyAttainment/Unclassifiable. Wagoner CountyAttainment/Unclassifiable. Washington CountyAttainment/Unclassifiable. Washita CountyAttainment/Unclassifiable. Woods CountyAttainment/Unclassifiable. Woodward CountyAttainment/Unclassifiable.

1 Includes any Indian country in each county or area, unless otherwise specified. EPA is not determining the boundaries of any area of Indian country in this table, including any area of Indian country located in the larger designation area. The inclusion of any Indian country in the designation area is not a determination that the state has regulatory authority under the Clean Air Act for such Indian country.

2 This date is April 9, 2018, unless otherwise noted.

Oklahoma—Carbon Monoxide

Designated Area Designation Classification Date 1Type Date 1Type AQCR 017 Metropolitan Fort Smith InterstateUnclassifiable/Attainment Adair County Cherokee County Le Flore County Sequoyah County AQCR 022 Shreveport-Texarkana-Tyler InterstateUnclassifiable/Attainment McCurtain County AQCR 184 Central Oklahoma IntrastateUnclassifiable/Attainment Canadian County Cleveland County Grady County Kingfisher County Lincoln County Logan County McClain County Oklahoma County Pottawatomie County AQCR 185 North Central Oklahoma IntrastateUnclassifiable/Attainment Garfield County Grant County Kay County Noble County Payne County AQCR 186 Northeastern Oklahoma IntrastateUnclassifiable/Attainment Craig County Creek County Delaware County Mayes County Muskogee County Nowata County Okmulgee County Osage County Ottawa County Pawnee County Rogers County Tulsa County Wagoner County Washington County AQCR 187 Northwestern Oklahoma IntrastateUnclassifiable/Attainment Alfalfa County Beaver County Blaine County Cimarron County Custer County Dewey County Ellis County Harper County Major County Roger Mills County Texas County Woods County Woodward County AQCR 188 Southeastern Oklahoma IntrastateUnclassifiable/Attainment Atoka County Bryan County Carter County Choctaw County Coal County Garvin County Haskell County Hughes County Johnston County Latimer County Love County Marshall County McIntosh County Murray County Okfuskee County Pittsburg County Pontotoc County Pushmataha County Seminole County AQCR 189 Southwestern Oklahoma IntrastateUnclassifiable/Attainment Beckham County Caddo County Comanche County Cotton County Greer County Harmon County Jackson County Jefferson County Kiowa County Stephens County Tillman County Washita County

1 This date is November 15, 1990, unless otherwise noted.

Oklahoma—Ozone (1-Hour Standard) 2

Designated area Designation Classification Date 1Type Date 1Type AQCR 017 Metropolitan Fort Smith InterstateUnclassifiable/Attainment Adair County Cherokee County Le Flore County Sequoyah County AQCR 022 Shreveport-Texarkana-Tyler IntrastateUnclassifiable/Attainment McCurtain County AQCR 184 Central Oklahoma Intrastate (part) Cleveland CountyUnclassifiable/Attainment Oklahoma CountyUnclassifiable/Attainment AQCR 184 Central Oklahoma Intrastate (Remainder of)Unclassifiable/Attainment Canadian County Grady County Kingfisher County Lincoln County Logan County McClain County Pottawatomie County AQCR 185 North Central Oklahoma IntrastateUnclassifiable/Attainment Garfield County Grant County Kay County Noble County Payne County AQCR 186 Northeastern Oklahoma IntrastateUnclassifiable/Attainment Craig County Creek County Delaware County Mayes County Muskogee County Nowata County Okmulgee County Osage County Ottawa County Pawnee County Rogers County Tulsa County Wagoner County Washington County AQCR 187 Northwestern Oklahoma IntrastateUnclassifiable/Attainment Alfalfa County Beaver County Blaine County Cimarron County Custer County Dewey County Ellis County Harper County Major County Roger Mills County Texas County Woods County Woodward County AQCR 188 Southeastern Oklahoma IntrastateUnclassifiable/Attainment Atoka County Bryan County Carter County Choctaw County Coal County Garvin County Haskell County Hughes County Johnston County Latimer County Love County Marshall County McIntosh County Murray County Okfuskee County Pittsburg County Pontotoc County Pushmataha County Seminole County AQCR 189 Southwestern Oklahoma IntrastateUnclassifiable/Attainment Beckham County Caddo County Comanche County Cotton County Greer County Harmon County Jackson County Jefferson County Kiowa County Stephens County Tillman County Washita County

1 This date is October 18, 2000, unless otherwise noted.

2 The 1-hour ozone standard is revoked effective June 15, 2005 for all areas in Oklahoma.

Oklahoma—1997 Annual PM2.5 NAAQS

[Primary and Secondary]

Designated area Designation aClassification Date 1Type Date Type AQCR 017 Metropolitan Fort Smith Interstate: Adair CountyUnclassifiable/Attainment Cherokee CountyUnclassifiable/Attainment Le Flore CountyUnclassifiable/Attainment Sequoyah CountyUnclassifiable/Attainment AQCR 022 Shreveport-Texarkana-Tyler Intrastate: McCurtain CountyUnclassifiable/Attainment AQCR 184 Central Oklahoma Intrastate (part): Cleveland CountyUnclassifiable/Attainment Oklahoma CountyUnclassifiable/Attainment AQCR 184 Central Oklahoma Intrastate (remainder of): Canadian CountyUnclassifiable/Attainment Grady CountyUnclassifiable/Attainment Kingfisher CountyUnclassifiable/Attainment Lincoln CountyUnclassifiable/Attainment Logan CountyUnclassifiable/Attainment McClain CountyUnclassifiable/Attainment Pottawatomie CountyUnclassifiable/Attainment AQCR 185 North Central Oklahoma Intrastate: Garfield CountyUnclassifiable/Attainment Grant CountyUnclassifiable/Attainment Kay CountyUnclassifiable/Attainment Noble CountyUnclassifiable/Attainment Payne CountyUnclassifiable/Attainment AQCR 186 Northeastern Oklahoma Intrastate: Craig CountyUnclassifiable/Attainment Creek CountyUnclassifiable/Attainment Delaware CountyUnclassifiable/Attainment Mayes CountyUnclassifiable/Attainment Muskogee CountyUnclassifiable/Attainment Nowata CountyUnclassifiable/Attainment Okmulgee CountyUnclassifiable/Attainment Osage CountyUnclassifiable/Attainment Ottawa CountyUnclassifiable/Attainment Pawnee CountyUnclassifiable/Attainment Rogers CountyUnclassifiable/Attainment Tulsa CountyUnclassifiable/Attainment Wagoner CountyUnclassifiable/Attainment Washington CountyUnclassifiable/Attainment AQCR 187 Northwestern Oklahoma Intrastate: Alfalfa CountyUnclassifiable/Attainment Beaver CountyUnclassifiable/Attainment Blaine CountyUnclassifiable/Attainment Cimarron CountyUnclassifiable/Attainment Custer CountyUnclassifiable/Attainment Dewey CountyUnclassifiable/Attainment Ellis CountyUnclassifiable/Attainment Harper CountyUnclassifiable/Attainment Major CountyUnclassifiable/Attainment Roger Mills CountyUnclassifiable/Attainment Texas CountyUnclassifiable/Attainment Woods CountyUnclassifiable/Attainment Woodward CountyUnclassifiable/Attainment AQCR 188 Southeastern Oklahoma Intrastate: Atoka CountyUnclassifiable/Attainment Bryan CountyUnclassifiable/Attainment Carter CountyUnclassifiable/Attainment Choctaw CountyUnclassifiable/Attainment Coal CountyUnclassifiable/Attainment Garvin CountyUnclassifiable/Attainment Haskell CountyUnclassifiable/Attainment Hughes CountyUnclassifiable/Attainment Johnston CountyUnclassifiable/Attainment Latimer CountyUnclassifiable/Attainment Love CountyUnclassifiable/Attainment McIntosh CountyUnclassifiable/Attainment Marshall CountyUnclassifiable/Attainment Murray CountyUnclassifiable/Attainment Okfuskee CountyUnclassifiable/Attainment Pittsburg CountyUnclassifiable/Attainment Pontotoc CountyUnclassifiable/Attainment Pushmataha CountyUnclassifiable/Attainment Seminole CountyUnclassifiable/Attainment AQCR 189 Southwestern Oklahoma Intrastate: Beckham CountyUnclassifiable/Attainment Caddo CountyUnclassifiable/Attainment Comanche CountyUnclassifiable/Attainment Cotton CountyUnclassifiable/Attainment Greer CountyUnclassifiable/Attainment Harmon CountyUnclassifiable/Attainment Jackson CountyUnclassifiable/Attainment Jefferson CountyUnclassifiable/Attainment Kiowa CountyUnclassifiable/Attainment Stephens CountyUnclassifiable/Attainment Tillman CountyUnclassifiable/Attainment Washita CountyUnclassifiable/Attainment

a Includes Indian Country located in each county or area, except as otherwise specified.

1 This date is 90 days after January 5, 2005, unless otherwise noted.

Oklahoma—2012 Annual PM2.5 NAAQS

[Primary]

Designated area 1Designation Classification Date 2Type Date 2Type AQCR 017 Metropolitan Fort Smith Interstate: Adair CountyUnclassifiable/Attainment Cherokee CountyUnclassifiable/Attainment Le Flore CountyUnclassifiable/Attainment Sequoyah CountyUnclassifiable/Attainment AQCR 022 Shreveport-Texarkana-Tyler Intrastate: McCurtain CountyUnclassifiable/Attainment AQCR 184 Central Oklahoma Intrastate: Canadian CountyUnclassifiable/Attainment Cleveland CountyUnclassifiable/Attainment Grady CountyUnclassifiable/Attainment Kingfisher CountyUnclassifiable/Attainment Lincoln CountyUnclassifiable/Attainment Logan CountyUnclassifiable/Attainment McClain CountyUnclassifiable/Attainment Oklahoma CountyUnclassifiable/Attainment Pottawatomie CountyUnclassifiable/Attainment AQCR 185 North Central Oklahoma Intrastate: Garfield CountyUnclassifiable/Attainment Grant CountyUnclassifiable/Attainment Kay CountyUnclassifiable/Attainment Noble CountyUnclassifiable/Attainment Payne CountyUnclassifiable/Attainment AQCR 186 Northeastern Oklahoma Intrastate: Craig CountyUnclassifiable/Attainment Creek CountyUnclassifiable/Attainment Delaware CountyUnclassifiable/Attainment Mayes CountyUnclassifiable/Attainment Muskogee CountyUnclassifiable/Attainment Nowata CountyUnclassifiable/Attainment Okmulgee CountyUnclassifiable/Attainment Osage CountyUnclassifiable/Attainment Ottawa CountyUnclassifiable/Attainment Pawnee CountyUnclassifiable/Attainment Rogers CountyUnclassifiable/Attainment Tulsa CountyUnclassifiable/Attainment Wagoner CountyUnclassifiable/Attainment Washington CountyUnclassifiable/Attainment AQCR 187 Northwestern Oklahoma Intrastate: Alfalfa CountyUnclassifiable/Attainment Beaver CountyUnclassifiable/Attainment Blaine CountyUnclassifiable/Attainment Cimarron CountyUnclassifiable/Attainment Custer CountyUnclassifiable/Attainment Dewey CountyUnclassifiable/Attainment Ellis CountyUnclassifiable/Attainment Harper CountyUnclassifiable/Attainment Major CountyUnclassifiable/Attainment Roger Mills CountyUnclassifiable/Attainment Texas CountyUnclassifiable/Attainment Woods CountyUnclassifiable/Attainment Woodward CountyUnclassifiable/Attainment AQCR 188 Southeastern Oklahoma Intrastate: Atoka CountyUnclassifiable/Attainment Bryan CountyUnclassifiable/Attainment Carter CountyUnclassifiable/Attainment Choctaw CountyUnclassifiable/Attainment Coal CountyUnclassifiable/Attainment Garvin CountyUnclassifiable/Attainment Haskell CountyUnclassifiable/Attainment Hughes CountyUnclassifiable/Attainment Johnston CountyUnclassifiable/Attainment Latimer CountyUnclassifiable/Attainment Love CountyUnclassifiable/Attainment McIntosh CountyUnclassifiable/Attainment Marshall CountyUnclassifiable/Attainment Murray CountyUnclassifiable/Attainment Okfuskee CountyUnclassifiable/Attainment Pittsburg CountyUnclassifiable/Attainment Pontotoc CountyUnclassifiable/Attainment Pushmataha CountyUnclassifiable/Attainment Seminole CountyUnclassifiable/Attainment AQCR 189 Southwestern Oklahoma Intrastate: Beckham CountyUnclassifiable/Attainment Caddo CountyUnclassifiable/Attainment Comanche CountyUnclassifiable/Attainment Cotton CountyUnclassifiable/Attainment Greer CountyUnclassifiable/Attainment Harmon CountyUnclassifiable/Attainment Jackson CountyUnclassifiable/Attainment Jefferson CountyUnclassifiable/Attainment Kiowa CountyUnclassifiable/Attainment Stephens CountyUnclassifiable/Attainment Tillman CountyUnclassifiable/Attainment Washita CountyUnclassifiable/Attainment

1 Includes areas of Indian country located in each county or area, except as otherwise specified.

2 This date is April 15, 2015, unless otherwise noted.

Oklahoma—1997 24-Hour PM2.5 NAAQS

[Primary and Secondary]

Designated area Designation aClassification Date 1Type Date Type AQCR 017 Metropolitan Fort Smith Interstate: Adair CountyUnclassifiable/Attainment. Cherokee CountyUnclassifiable/Attainment. Le Flore CountyUnclassifiable/Attainment. Sequoyah CountyUnclassifiable/Attainment. AQCR 022 Shreveport-Texarkana-Tyler Intrastate: McCurtain CountyUnclassifiable/Attainment. AQCR 184 Central Oklahoma Intrastate: Canadian CountyUnclassifiable/Attainment. Cleveland CountyUnclassifiable/Attainment. Grady CountyUnclassifiable/Attainment. Kingfisher CountyUnclassifiable/Attainment. Lincoln CountyUnclassifiable/Attainment. Logan CountyUnclassifiable/Attainment. McClain CountyUnclassifiable/Attainment. Oklahoma CountyUnclassifiable/Attainment. Pottawatomie CountyUnclassifiable/Attainment. AQCR 185 North Central Oklahoma Intrastate: Garfield CountyUnclassifiable/Attainment. Grant CountyUnclassifiable/Attainment. Kay CountyUnclassifiable/Attainment. Noble CountyUnclassifiable/Attainment. Payne CountyUnclassifiable/Attainment. AQCR 186 Northeastern Oklahoma Intrastate: Craig CountyUnclassifiable/Attainment. Creek CountyUnclassifiable/Attainment. Delaware CountyUnclassifiable/Attainment. Mayes CountyUnclassifiable/Attainment. Muskogee CountyUnclassifiable/Attainment. Nowata CountyUnclassifiable/Attainment. Okmulgee CountyUnclassifiable/Attainment. Osage CountyUnclassifiable/Attainment. Ottawa CountyUnclassifiable/Attainment. Pawnee CountyUnclassifiable/Attainment. Rogers CountyUnclassifiable/Attainment. Tulsa CountyUnclassifiable/Attainment. Wagoner CountyUnclassifiable/Attainment. Washington CountyUnclassifiable/Attainment. AQCR 187 Northwestern Oklahoma Intrastate: Alfalfa CountyUnclassifiable/Attainment. Beaver CountyUnclassifiable/Attainment. Blaine CountyUnclassifiable/Attainment. Cimarron CountyUnclassifiable/Attainment. Custer CountyUnclassifiable/Attainment. Dewey CountyUnclassifiable/Attainment. Ellis CountyUnclassifiable/Attainment. Harper CountyUnclassifiable/Attainment. Major CountyUnclassifiable/Attainment. Roger Mills CountyUnclassifiable/Attainment. Texas CountyUnclassifiable/Attainment. Woods CountyUnclassifiable/Attainment. Woodward CountyUnclassifiable/Attainment. AQCR 188 Southeastern Oklahoma Intrastate: Atoka CountyUnclassifiable/Attainment. Bryan CountyUnclassifiable/Attainment. Carter CountyUnclassifiable/Attainment. Choctaw CountyUnclassifiable/Attainment. Coal CountyUnclassifiable/Attainment. Garvin CountyUnclassifiable/Attainment. Haskell CountyUnclassifiable/Attainment. Hughes CountyUnclassifiable/Attainment. Johnston CountyUnclassifiable/Attainment. Latimer CountyUnclassifiable/Attainment. Love CountyUnclassifiable/Attainment. McIntosh CountyUnclassifiable/Attainment. Marshall CountyUnclassifiable/Attainment. Murray CountyUnclassifiable/Attainment. Okfuskee CountyUnclassifiable/Attainment. Pittsburg CountyUnclassifiable/Attainment. Pontotoc CountyUnclassifiable/Attainment. Pushmataha CountyUnclassifiable/Attainment. Seminole CountyUnclassifiable/Attainment. AQCR 189 Southwestern Oklahoma Intrastate: Beckham CountyUnclassifiable/Attainment. Caddo CountyUnclassifiable/Attainment. Comanche CountyUnclassifiable/Attainment. Cotton CountyUnclassifiable/Attainment. Greer CountyUnclassifiable/Attainment. Harmon CountyUnclassifiable/Attainment. Jackson CountyUnclassifiable/Attainment. Jefferson CountyUnclassifiable/Attainment. Kiowa CountyUnclassifiable/Attainment. Stephens CountyUnclassifiable/Attainment. Tillman CountyUnclassifiable/Attainment. Washita CountyUnclassifiable/Attainment.

a Includes Indian Country located in each county or area, except as otherwise specified.

1 This date is 90 days after January 5, 2005, unless otherwise noted.

Oklahoma—2006 24-Hour PM2.5 NAAQS

[Primary and Secondary]

Designated area Designation aClassification Date 1Type Date Type AQCR 017 Metropolitan Fort Smith Interstate: Adair CountyUnclassifiable/Attainment. Cherokee CountyUnclassifiable/Attainment. Le Flore CountyUnclassifiable/Attainment. Sequoyah CountyUnclassifiable/Attainment. AQCR 022 Shreveport-Texarkana-Tyler Intrastate: McCurtain CountyUnclassifiable/Attainment. AQCR 184 Central Oklahoma Intrastate: Canadian CountyUnclassifiable/Attainment. Cleveland CountyUnclassifiable/Attainment. Grady CountyUnclassifiable/Attainment. Kingfisher CountyUnclassifiable/Attainment. Lincoln CountyUnclassifiable/Attainment. Logan CountyUnclassifiable/Attainment. McClain CountyUnclassifiable/Attainment. Oklahoma CountyUnclassifiable/Attainment. Pottawatomie CountyUnclassifiable/Attainment. AQCR 185 North Central Oklahoma Intrastate: Garfield CountyUnclassifiable/Attainment. Grant CountyUnclassifiable/Attainment. Kay CountyUnclassifiable/Attainment. Noble CountyUnclassifiable/Attainment. Payne CountyUnclassifiable/Attainment. AQCR 186 Northeastern Oklahoma Intrastate: Craig CountyUnclassifiable/Attainment. Creek CountyUnclassifiable/Attainment. Delaware CountyUnclassifiable/Attainment. Mayes CountyUnclassifiable/Attainment. Muskogee CountyUnclassifiable/Attainment. Nowata CountyUnclassifiable/Attainment. Okmulgee CountyUnclassifiable/Attainment. Osage CountyUnclassifiable/Attainment. Ottawa CountyUnclassifiable/Attainment. Pawnee CountyUnclassifiable/Attainment. Rogers CountyUnclassifiable/Attainment. Tulsa CountyUnclassifiable/Attainment. Wagoner CountyUnclassifiable/Attainment. Washington CountyUnclassifiable/Attainment. AQCR 187 Northwestern Oklahoma Intrastate: Alfalfa CountyUnclassifiable/Attainment. Beaver CountyUnclassifiable/Attainment. Blaine CountyUnclassifiable/Attainment. Cimarron CountyUnclassifiable/Attainment. Custer CountyUnclassifiable/Attainment. Dewey CountyUnclassifiable/Attainment. Ellis CountyUnclassifiable/Attainment. Harper CountyUnclassifiable/Attainment. Major CountyUnclassifiable/Attainment. Roger Mills CountyUnclassifiable/Attainment. Texas CountyUnclassifiable/Attainment. Woods CountyUnclassifiable/Attainment. Woodward CountyUnclassifiable/Attainment. AQCR 188 Southeastern Oklahoma Intrastate: Atoka CountyUnclassifiable/Attainment. Bryan CountyUnclassifiable/Attainment. Carter CountyUnclassifiable/Attainment. Choctaw CountyUnclassifiable/Attainment. Coal CountyUnclassifiable/Attainment. Garvin CountyUnclassifiable/Attainment. Haskell CountyUnclassifiable/Attainment. Hughes CountyUnclassifiable/Attainment. Johnston CountyUnclassifiable/Attainment. Latimer CountyUnclassifiable/Attainment. Love CountyUnclassifiable/Attainment. McIntosh CountyUnclassifiable/Attainment. Marshall CountyUnclassifiable/Attainment. Murray CountyUnclassifiable/Attainment. Okfuskee CountyUnclassifiable/Attainment. Pittsburg CountyUnclassifiable/Attainment. Pontotoc CountyUnclassifiable/Attainment. Pushmataha CountyUnclassifiable/Attainment. Seminole CountyUnclassifiable/Attainment. AQCR 189 Southwestern Oklahoma Intrastate: Beckham CountyUnclassifiable/Attainment. Caddo CountyUnclassifiable/Attainment. Comanche CountyUnclassifiable/Attainment. Cotton CountyUnclassifiable/Attainment. Greer CountyUnclassifiable/Attainment. Harmon CountyUnclassifiable/Attainment. Jackson CountyUnclassifiable/Attainment. Jefferson CountyUnclassifiable/Attainment. Kiowa CountyUnclassifiable/Attainment. Stephens CountyUnclassifiable/Attainment. Tillman CountyUnclassifiable/Attainment. Washita CountyUnclassifiable/Attainment.

a Includes Indian Country located in each county or area, except as otherwise specified.

1 This date is 30 days after November 13, 2009, unless otherwise noted.

Oklahoma—NO2 (1971 Annual Standard)

Designated area Does not meet primary standards Cannot be classified or better than national standards AQCR 017X AQCR 184X AQCR 185X AQCR 186X AQCR 187X AQCR 188X AQCR 189X

Oklahoma—NO2 (2010 1-Hour Standard)

Designated area Designation aDate 1Type Adair CountyUnclassifiable/Attainment. Alfalfa CountyUnclassifiable/Attainment. Atoka CountyUnclassifiable/Attainment. Beaver CountyUnclassifiable/Attainment. Beckham CountyUnclassifiable/Attainment. Blaine CountyUnclassifiable/Attainment. Bryan CountyUnclassifiable/Attainment. Caddo CountyUnclassifiable/Attainment. Canadian CountyUnclassifiable/Attainment. Carter CountyUnclassifiable/Attainment. Cherokee CountyUnclassifiable/Attainment. Choctaw CountyUnclassifiable/Attainment. Cimarron CountyUnclassifiable/Attainment. Cleveland CountyUnclassifiable/Attainment. Coal CountyUnclassifiable/Attainment. Comanche CountyUnclassifiable/Attainment. Cotton CountyUnclassifiable/Attainment. Craig CountyUnclassifiable/Attainment. Creek CountyUnclassifiable/Attainment. Custer CountyUnclassifiable/Attainment. Delaware CountyUnclassifiable/Attainment. Dewey CountyUnclassifiable/Attainment. Ellis CountyUnclassifiable/Attainment. Garfield CountyUnclassifiable/Attainment. Garvin CountyUnclassifiable/Attainment. Grady CountyUnclassifiable/Attainment. Grant CountyUnclassifiable/Attainment. Greer CountyUnclassifiable/Attainment. Harmon CountyUnclassifiable/Attainment. Harper CountyUnclassifiable/Attainment. Haskell CountyUnclassifiable/Attainment. Hughes CountyUnclassifiable/Attainment. Jackson CountyUnclassifiable/Attainment. Jefferson CountyUnclassifiable/Attainment. Johnston CountyUnclassifiable/Attainment. Kay CountyUnclassifiable/Attainment. Kingfisher CountyUnclassifiable/Attainment. Kiowa CountyUnclassifiable/Attainment. Latimer CountyUnclassifiable/Attainment. Le Flore CountyUnclassifiable/Attainment. Lincoln CountyUnclassifiable/Attainment. Logan CountyUnclassifiable/Attainment. Love CountyUnclassifiable/Attainment. Major CountyUnclassifiable/Attainment. Marshall CountyUnclassifiable/Attainment. Mayes CountyUnclassifiable/Attainment. McClain CountyUnclassifiable/Attainment. McCurtain CountyUnclassifiable/Attainment. McIntosh CountyUnclassifiable/Attainment. Murray CountyUnclassifiable/Attainment. Muskogee CountyUnclassifiable/Attainment. Noble CountyUnclassifiable/Attainment. Nowata CountyUnclassifiable/Attainment. Okfuskee CountyUnclassifiable/Attainment. Oklahoma CountyUnclassifiable/Attainment. Okmulgee CountyUnclassifiable/Attainment. Osage CountyUnclassifiable/Attainment. Ottawa CountyUnclassifiable/Attainment. Pawnee CountyUnclassifiable/Attainment. Payne CountyUnclassifiable/Attainment. Pittsburg CountyUnclassifiable/Attainment. Pontotoc CountyUnclassifiable/Attainment. Pottawatomie CountyUnclassifiable/Attainment. Pushmataha CountyUnclassifiable/Attainment. Roger Mills CountyUnclassifiable/Attainment. Rogers CountyUnclassifiable/Attainment. Seminole CountyUnclassifiable/Attainment. Sequoyah CountyUnclassifiable/Attainment. Stephens CountyUnclassifiable/Attainment. Texas CountyUnclassifiable/Attainment. Tillman CountyUnclassifiable/Attainment. Tulsa CountyUnclassifiable/Attainment. Wagoner CountyUnclassifiable/Attainment. Washington CountyUnclassifiable/Attainment. Washita CountyUnclassifiable/Attainment. Woods CountyUnclassifiable/Attainment. Woodward CountyUnclassifiable/Attainment.

a Includes Indian Country located in each county or area, except as otherwise specified.

1 This date is 90 days after October 31, 2011, unless otherwise noted.

Oklahoma—1997 8-Hour Ozone NAAQS

[Primary and Secondary]

Designated area Designation aCategory/classification Date 1Type Date 1Type AQCR 017 Metropolitan Fort Smith InterstateUnclassifiable/Attainment Adair County Cherokee County Le Flore County Sequoyah County AQCR 022 Shreveport-Texarkana-Tyler Intrastate: McCurtain CountyUnclassifiable/Attainment AQCR 184 Central Oklahoma Intrastate (part): Cleveland CountyUnclassifiable/Attainment Oklahoma CountyUnclassifiable/Attainment AQCR 184 Central Oklahoma Intrastate (remainder of)Unclassifiable/Attainment Canadian County Grady County Kingfisher County Lincoln County Logan County McClain County Pottawatomie County AQCR 185 North Central Oklahoma IntrastateUnclassifiable/Attainment Garfield County Grant County Kay County Noble County Payne County AQCR 186 Northeastern Oklahoma IntrastateUnclassifiable/Attainment Craig County Creek County Delaware County Mayes County Muskogee County Nowata County Okmulgee County Osage County Ottawa County Pawnee County Rogers County Tulsa County Wagoner County Washington County AQCR 187 Northwestern Oklahoma IntrastateUnclassifiable/Attainment Alfalfa County Beaver County Blaine County Cimarron County Custer County Dewey County Ellis County Harper County Major County Roger Mills County Texas County Woods County Woodward County AQCR 188 Southeastern Oklahoma IntrastateUnclassifiable/Attainment Atoka County Bryan County Carter County Choctaw County Coal County Garvin County Haskell County Hughes County Johnston County Latimer County Love County Marshall County McIntosh County Murray County Okfuskee County Pittsburg County Pontotoc County Pushmataha County Seminole County AQCR 189 Southwestern Oklahoma IntrastateUnclassifiable/Attainment Beckham County Caddo County Comanche County Cotton County Greer County Harmon County Jackson County Jefferson County Kiowa County Stephens County Tillman County Washita County

a Includes Indian Country located in each county or area, except as otherwise specified.

1 This date is June 15, 2004, unless otherwise noted.

Oklahoma—2008 8-Hour Ozone NAAQS

[Primary and Secondary]

Designated area 1Designation Classification Date 2Type Date 2Type Adair CountyUnclassifiable/Attainment Alfalfa CountyUnclassifiable/Attainment Atoka CountyUnclassifiable/Attainment Beaver CountyUnclassifiable/Attainment Beckham CountyUnclassifiable/Attainment Blaine CountyUnclassifiable/Attainment Bryan CountyUnclassifiable/Attainment Caddo CountyUnclassifiable/Attainment Canadian CountyUnclassifiable/Attainment Carter CountyUnclassifiable/Attainment Cherokee CountyUnclassifiable/Attainment Choctaw CountyUnclassifiable/Attainment Cimarron CountyUnclassifiable/Attainment Cleveland CountyUnclassifiable/Attainment Coal CountyUnclassifiable/Attainment Comanche CountyUnclassifiable/Attainment Cotton CountyUnclassifiable/Attainment Craig CountyUnclassifiable/Attainment Creek CountyUnclassifiable/Attainment Custer CountyUnclassifiable/Attainment Delaware CountyUnclassifiable/Attainment Dewey CountyUnclassifiable/Attainment Ellis CountyUnclassifiable/Attainment Garfield CountyUnclassifiable/Attainment Garvin CountyUnclassifiable/Attainment Grady CountyUnclassifiable/Attainment Grant CountyUnclassifiable/Attainment Greer CountyUnclassifiable/Attainment Harmon CountyUnclassifiable/Attainment Harper CountyUnclassifiable/Attainment Haskell CountyUnclassifiable/Attainment Hughes CountyUnclassifiable/Attainment Jackson CountyUnclassifiable/Attainment Jefferson CountyUnclassifiable/Attainment Johnston CountyUnclassifiable/Attainment Kay CountyUnclassifiable/Attainment Kingfisher CountyUnclassifiable/Attainment Kiowa CountyUnclassifiable/Attainment Latimer CountyUnclassifiable/Attainment Le Flore CountyUnclassifiable/Attainment Lincoln CountyUnclassifiable/Attainment Logan CountyUnclassifiable/Attainment Love CountyUnclassifiable/Attainment Major CountyUnclassifiable/Attainment Marshall CountyUnclassifiable/Attainment Mayes CountyUnclassifiable/Attainment McClain CountyUnclassifiable/Attainment McCurtain CountyUnclassifiable/Attainment McIntosh CountyUnclassifiable/Attainment Murray CountyUnclassifiable/Attainment Muskogee CountyUnclassifiable/Attainment Noble CountyUnclassifiable/Attainment Nowata CountyUnclassifiable/Attainment Okfuskee CountyUnclassifiable/Attainment Oklahoma CountyUnclassifiable/Attainment Okmulgee CountyUnclassifiable/Attainment Osage CountyUnclassifiable/Attainment Ottawa CountyUnclassifiable/Attainment Pawnee CountyUnclassifiable/Attainment Payne CountyUnclassifiable/Attainment Pittsburg CountyUnclassifiable/Attainment Pontotoc CountyUnclassifiable/Attainment Pottawatomie CountyUnclassifiable/Attainment Pushmataha CountyUnclassifiable/Attainment Roger Mills CountyUnclassifiable/Attainment Rogers CountyUnclassifiable/Attainment Seminole CountyUnclassifiable/Attainment Sequoyah CountyUnclassifiable/Attainment Stephens CountyUnclassifiable/Attainment Texas CountyUnclassifiable/Attainment Tillman CountyUnclassifiable/Attainment Tulsa CountyUnclassifiable/Attainment Wagoner CountyUnclassifiable/Attainment Washington CountyUnclassifiable/Attainment Washita CountyUnclassifiable/Attainment Woods CountyUnclassifiable/Attainment Woodward CountyUnclassifiable/Attainment

1 Includes any Indian country in each county or area, unless otherwise specified.

2 This date is July 20, 2012, unless otherwise noted.

Oklahoma—2015 8-Hour Ozone NAAQS

[Primary and Secondary]

Designated area 1Designation Classification Date 2Type Date 2Type Adair County1/16/18Attainment/Unclassifiable Alfalfa County1/16/18Attainment/Unclassifiable Atoka County1/16/18Attainment/Unclassifiable Beaver County1/16/18Attainment/Unclassifiable Beckham County1/16/18Attainment/Unclassifiable Blaine County1/16/18Attainment/Unclassifiable Bryan CountyAttainment/Unclassifiable Caddo County1/16/18Attainment/Unclassifiable Canadian County1/16/18Attainment/Unclassifiable Carter County1/16/18Attainment/Unclassifiable Cherokee County1/16/18Attainment/Unclassifiable Choctaw County1/16/18Attainment/Unclassifiable Cimarron County1/16/18Attainment/Unclassifiable Cleveland County1/16/18Attainment/Unclassifiable Coal County1/16/18Attainment/Unclassifiable Comanche County1/16/18Attainment/Unclassifiable Cotton County1/16/18Attainment/Unclassifiable Craig County1/16/18Attainment/Unclassifiable Creek County1/16/18Attainment/Unclassifiable Custer County1/16/18Attainment/Unclassifiable Delaware County1/16/18Attainment/Unclassifiable Dewey County1/16/18Attainment/Unclassifiable Ellis County1/16/18Attainment/Unclassifiable Garfield County1/16/18Attainment/Unclassifiable Garvin County1/16/18Attainment/Unclassifiable Grady County1/16/18Attainment/Unclassifiable Grant County1/16/18Attainment/Unclassifiable Greer County1/16/18Attainment/Unclassifiable Harmon County1/16/18Attainment/Unclassifiable Harper County1/16/18Attainment/Unclassifiable Haskell County1/16/18Attainment/Unclassifiable Hughes County1/16/18Attainment/Unclassifiable Jackson County1/16/18Attainment/Unclassifiable Jefferson County1/16/18Attainment/Unclassifiable Johnston County1/16/18Attainment/Unclassifiable Kay County1/16/18Attainment/Unclassifiable Kingfisher County1/16/18Attainment/Unclassifiable Kiowa County1/16/18Attainment/Unclassifiable Latimer County1/16/18Attainment/Unclassifiable Le Flore County1/16/18Attainment/Unclassifiable Lincoln County1/16/18Attainment/Unclassifiable Logan County1/16/18Attainment/Unclassifiable Love County1/16/18Attainment/Unclassifiable McClain County1/16/18Attainment/Unclassifiable McCurtain County1/16/18Attainment/Unclassifiable McIntosh County1/16/18Attainment/Unclassifiable Major County1/16/18Attainment/Unclassifiable Marshall County1/16/18Attainment/Unclassifiable Mayes County1/16/18Attainment/Unclassifiable Murray County1/16/18Attainment/Unclassifiable Muskogee County1/16/18Attainment/Unclassifiable Noble County1/16/18Attainment/Unclassifiable Nowata County1/16/18Attainment/Unclassifiable Okfuskee County1/16/18Attainment/Unclassifiable Oklahoma County1/16/18Attainment/Unclassifiable Okmulgee County1/16/18Attainment/Unclassifiable Osage County1/16/18Attainment/Unclassifiable Ottawa County1/16/18Attainment/Unclassifiable Pawnee County1/16/18Attainment/Unclassifiable Payne County1/16/18Attainment/Unclassifiable Pittsburg County1/16/18Attainment/Unclassifiable Pontotoc County1/16/18Attainment/Unclassifiable Pottawatomie County1/16/18Attainment/Unclassifiable Pushmataha County1/16/18Attainment/Unclassifiable Roger Mills County1/16/18Attainment/Unclassifiable Rogers County1/16/18Attainment/Unclassifiable Seminole County1/16/18Attainment/Unclassifiable Sequoyah County1/16/18Attainment/Unclassifiable Stephens County1/16/18Attainment/Unclassifiable Texas County1/16/18Attainment/Unclassifiable Tillman County1/16/18Attainment/Unclassifiable Tulsa County1/16/18Attainment/Unclassifiable Wagoner County1/16/18Attainment/Unclassifiable Washington County1/16/18Attainment/Unclassifiable Washita County1/16/18Attainment/Unclassifiable Woods County1/16/18Attainment/Unclassifiable Woodward County1/16/18Attainment/Unclassifiable

1 Includes any Indian country in each county or area, unless otherwise specified. EPA is not determining the boundaries of any area of Indian country in this table, including any area of Indian country located in the larger designation area. The inclusion of any Indian country in the designation area is not a determination that the state has regulatory authority under the Clean Air Act for such Indian country.

2 This date is August 3, 2018, unless otherwise noted.

Oklahoma—2008 Lead NAAQS

Designated area Designation for the 2008 NAAQS aDate 1Type Whole StateUnclassifiable/Attainment.

a Includes Indian Country located in each county or area, except as otherwise specified.

1 December 31, 2011 unless otherwise noted.

[43 FR 8964, Mar. 3, 1978] Editorial Note:For Federal Register citations affecting § 81.337, see the List of CFR Sections Affected, which appears in the Finding Aids section of the printed volume and at www.govinfo.gov.

AUTHORITY: 42 U.S.C. 7401,

SOURCE: 36 FR 22421, Nov. 25, 1971, unless otherwise noted.

CITE AS: 40 CFR 81.337