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1-Hour Ozone (1979) Maintenance Area (Redesignated from Nonattainment) Area/State/County Report - NAAQS Revoked

Data is current as of August 31, 2020


  Allegan Co, MI (Incomplete Data - Maintenance)
MICHIGAN (Region V)
Allegan County
 
  Atlanta, GA (Severe-15 - Maintenance)
GEORGIA (Region IV)
Cherokee County
Clayton County
Cobb County
Coweta County
DeKalb County
Douglas County
Fayette County
Forsyth County
Fulton County
Gwinnett County
Henry County
Paulding County
Rockdale County
 
  Beauregard Par, LA (Incomplete Data - Maintenance)
LOUISIANA (Region VI)
Beauregard Parish
 
  Birmingham, AL (Marginal - Maintenance)
ALABAMA (Region IV)
Jefferson County
Shelby County
 
  Canton, OH (Marginal - Maintenance)
OHIO (Region V)
Stark County
 
  Charleston, WV (Moderate - Maintenance)
WEST VIRGINIA (Region III)
Kanawha County
Putnam County
 
  Charlotte-Gastonia, NC (Moderate - Maintenance)
NORTH CAROLINA (Region IV)
Gaston County
Mecklenburg County
 
  Cherokee Co, SC (Marginal - Maintenance)
SOUTH CAROLINA (Region IV)
Cherokee County
 
  Cincinnati-Hamilton, OH-KY (Moderate - Maintenance)
KENTUCKY (Region IV)
Boone County
Campbell County
Kenton County
OHIO (Region V)
Butler County
Clermont County
Hamilton County
Warren County
 
  Cleveland-Akron-Lorain, OH (Moderate - Maintenance)
OHIO (Region V)
Ashtabula County
Cuyahoga County
Geauga County
Lake County
Lorain County
Medina County
Portage County
Summit County
 
  Clinton Co, OH (Section 185A - Maintenance)
OHIO (Region V)
Clinton County
 
  Columbiana Co, OH (Incomplete Data - Maintenance)
OHIO (Region V)
Columbiana County
 
  Columbus, OH (Marginal - Maintenance)
OHIO (Region V)
Delaware County
Franklin County
Licking County
 
  Dayton-Springfield, OH (Moderate - Maintenance)
OHIO (Region V)
Clark County
Greene County
Miami County
Montgomery County
 
  Denver-Boulder, CO (Section 185A - Maintenance)
COLORADO (Region VIII)
Adams County (P)
West of Kiowa Creek
Arapahoe County (P)
West of Kiowa Creek
Boulder County (P)
Excluding Rocky Mtn. National Park
Broomfield County
Denver County
Douglas County
Jefferson County
 
  Detroit-Ann Arbor, MI (Moderate - Maintenance)
MICHIGAN (Region V)
Livingston County
Macomb County
Monroe County
Oakland County
St. Clair County
Washtenaw County
Wayne County
 
  Door Co, WI (Rural Transport (Marginal) - Maintenance)
WISCONSIN (Region V)
Door County
 
  East Kern Co, CA (Serious - Maintenance)
CALIFORNIA (Region IX)
Kern County (P)
 
  Edmonson Co, KY (Rural Transport (Marginal) - Maintenance)
KENTUCKY (Region IV)
Edmonson County
 
  Evansville, IN (Marginal - Maintenance)
INDIANA (Region V)
Vanderburgh County
 
  Flint, MI (Section 185A - Maintenance)
MICHIGAN (Region V)
Genesee County
 
  Grand Rapids, MI (Moderate - Maintenance)
MICHIGAN (Region V)
Kent County
Ottawa County
 
  Grant Par, LA (Incomplete Data - Maintenance)
LOUISIANA (Region VI)
Grant Parish
 
  Greenbrier, WV (Marginal - Maintenance)
WEST VIRGINIA (Region III)
Greenbrier County
 
  Greensboro-Winston-Salem-High Point, NC (Moderate - Maintenance)
NORTH CAROLINA (Region IV)
Davidson County
Davie County (P)
Forsyth County
Guilford County
 
  Hancock & Waldo Cos, ME (Marginal - Maintenance)
MAINE (Region I)
Hancock County
Waldo County
 
  Huntington-Ashland, WV-KY (Moderate - Maintenance)
KENTUCKY (Region IV)
Boyd County
Greenup County (P)
WEST VIRGINIA (Region III)
Cabell County
Wayne County
 
  Indianapolis, IN (Marginal - Maintenance)
INDIANA (Region V)
Marion County
 
  Jacksonville, FL (Section 185A - Maintenance)
FLORIDA (Region IV)
Duval County
 
  Jersey Co, IL (Marginal - Maintenance)
ILLINOIS (Region V)
Jersey County
 
  Kansas City, MO-KS (Other - Maintenance)
KANSAS (Region VII)
Johnson County
Wyandotte County
MISSOURI (Region VII)
Clay County
Jackson County
Platte County
 
  Kent and Queen Anne's Co.s, MD (Marginal - Maintenance)
MARYLAND (Region III)
Kent County
Queen Anne's County
 
  Kewaunee Co, WI (Moderate - Maintenance)
WISCONSIN (Region V)
Kewaunee County
 
  Knoxville, TN (Marginal - Maintenance)
TENNESSEE (Region IV)
Knox County
 
  Lafayette, LA (Section 185A - Maintenance)
LOUISIANA (Region VI)
Lafayette Parish
 
  Lafourche Par, LA (Incomplete Data - Maintenance)
LOUISIANA (Region VI)
Lafourche Parish
 
  Lake Charles, LA (Marginal - Maintenance)
LOUISIANA (Region VI)
Calcasieu Parish
 
  Lexington-Fayette, KY (Marginal - Maintenance)
KENTUCKY (Region IV)
Fayette County
Scott County
 
  Louisville, KY-IN (Moderate - Maintenance)
INDIANA (Region V)
Clark County
Floyd County
KENTUCKY (Region IV)
Bullitt County (P)
Jefferson County
Oldham County (P)
 
  Manitowoc Co, WI (Moderate - Maintenance)
WISCONSIN (Region V)
Manitowoc County
 
  Memphis, TN (Marginal - Maintenance)
TENNESSEE (Region IV)
Shelby County
 
  Miami-Fort Lauderdale-W. Palm Beach, FL (Moderate - Maintenance)
FLORIDA (Region IV)
Broward County
Miami-Dade County
Palm Beach County
 
  Monterey Bay, CA (Moderate - Maintenance)
CALIFORNIA (Region IX)
Monterey County
San Benito County
Santa Cruz County
 
  Muskegon, MI (Moderate - Maintenance)
MICHIGAN (Region V)
Muskegon County
 
  Nashville, TN (Moderate - Maintenance)
TENNESSEE (Region IV)
Davidson County
Rutherford County
Sumner County
Williamson County
Wilson County
 
  New Orleans, LA (Section 185A - Maintenance)
LOUISIANA (Region VI)
Jefferson Parish
Orleans Parish
St. Bernard Parish
St. Charles Parish
 
  Norfolk-Virginia Beach-Newport News (Hampton Roads), VA (Marginal - Maintenance)
VIRGINIA (Region III)
Chesapeake city
Hampton city
James City County
Newport News city
Norfolk city
Poquoson city
Portsmouth city
Suffolk city
Virginia Beach city
Williamsburg city
York County
 
  Owensboro, KY (Marginal - Maintenance)
KENTUCKY (Region IV)
Daviess County
Hancock County (P)
 
  Paducah, KY (Marginal - Maintenance)
KENTUCKY (Region IV)
Livingston County (P)
Marshall County
 
  Parkersburg-Marietta, WV (Moderate - Maintenance)
WEST VIRGINIA (Region III)
Wood County
 
  Phoenix, AZ (Serious - Maintenance)
ARIZONA (Region IX)
Maricopa County (P)
Maricopa Association of Governments Urban Planning Area
 
  Pittsburgh-Beaver Valley, PA (Moderate - Maintenance)
PENNSYLVANIA (Region III)
Allegheny County
Armstrong County
Beaver County
Butler County
Fayette County
Washington County
Westmoreland County
 
  Pointe Coupee Parish, LA (Marginal - Maintenance)
LOUISIANA (Region VI)
Pointe Coupee Parish
 
  Portland-Vancouver AQMA, OR-WA (Marginal - Maintenance)
OREGON (Region X)
Clackamas County (P)
Air Quality Maintenance Area
Multnomah County (P)
Air Quality Maintenance Area
Washington County (P)
Air Quality Maintenance Area
WASHINGTON (Region X)
Clark County (P)
Air Quality Maintenance Area
 
  Preble Co, OH (Section 185A - Maintenance)
OHIO (Region V)
Preble County
 
  Raleigh-Durham, NC (Moderate - Maintenance)
NORTH CAROLINA (Region IV)
Durham County
Granville County (P)
Dutchville Township
Wake County
 
  Reading, PA (Moderate - Maintenance)
PENNSYLVANIA (Region III)
Berks County
 
  Richmond, VA (Moderate - Maintenance)
VIRGINIA (Region III)
Charles City County (P)
Chesterfield County
Colonial Heights city
Hanover County
Henrico County
Hopewell city
Richmond city
 
  Saginaw-Bay City-Midland, MI (Incomplete Data - Maintenance)
MICHIGAN (Region V)
Bay County
Midland County
Saginaw County
 
  Salt Lake City, UT (Moderate - Maintenance)
UTAH (Region VIII)
Davis County
Salt Lake County
 
  San Diego, CA (Serious - Maintenance)
CALIFORNIA (Region IX)
San Diego County
 
  Santa Barbara-Santa Maria-Lompoc, CA (Serious - Maintenance)
CALIFORNIA (Region IX)
Santa Barbara County
 
  Seattle-Tacoma, WA (Marginal - Maintenance)
WASHINGTON (Region X)
King County (P)
Pierce County
Snohomish County (P)
 
  Sheboygan, WI (Moderate - Maintenance)
WISCONSIN (Region V)
Sheboygan County
 
  South Bend-Elkhart, IN (Marginal - Maintenance)
INDIANA (Region V)
Elkhart County
St. Joseph County
 
  St James Par, LA (Incomplete Data - Maintenance)
LOUISIANA (Region VI)
St. James Parish
 
  St Mary Par, LA (Incomplete Data - Maintenance)
LOUISIANA (Region VI)
St. Mary Parish
 
  St. Louis, MO-IL (Serious - Maintenance)
ILLINOIS (Region V)
Madison County
Monroe County
St. Clair County
MISSOURI (Region VII)
Franklin County
Jefferson County
St. Charles County
St. Louis County
St. Louis city
 
  Steubenville, OH (Section 185A - Maintenance)
OHIO (Region V)
Jefferson County
 
  Tampa-St. Petersburg-Clearwater, FL (Marginal - Maintenance)
FLORIDA (Region IV)
Hillsborough County
Pinellas County
 
  Toledo, OH (Moderate - Maintenance)
OHIO (Region V)
Lucas County
Wood County
 
  Victoria, TX (Incomplete Data - Maintenance)
TEXAS (Region VI)
Victoria County
 
  Walworth Co, WI (Marginal - Maintenance)
WISCONSIN (Region V)
Walworth County
 
  Youngstown-Warren-Sharon, OH-PA (OH portion) (Marginal - Maintenance)
OHIO (Region V)
Mahoning County
Trumbull County

The former 1-hour ozone designations and classifications as of June 15, 2004, are being retained in subpart C of Part 81 for purposes of the anti backsliding provisions of 40 CFR 51.905. 40 CFR 51.905(c) references subpart C of part 81 for the areas affected by the anti-backsliding regulation.


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