81.336—Ohio.

Ohio—SO2
Designated area Does not meet primary standards Does not meet secondary standards Cannot be classified Better than national standards
Athens County X
Clermont County X
Columbiana County X
Coshocton County X
Cuyahoga County X
The remainder of Cuyahoga County X
Gallia County X
Greene County X
Hamilton County X
Jefferson County:
The Cities of Steubenville and Mingo Junction, Townships of Steubenville, Island Creek, Cross Creek, Knox and Wells X
The remainder of Jefferson County X
Lake County:
The Cities of Eastlake, Timberlake, Lakeline, Willoughby (north of U.S. 20) and Mentor (north of U.S. 20, west of S.R. 306) X
The remainder of Lake County X
Lorain County X
Lucas County: The area east of Route 23 and west of the eastern boundary of Oregon Township X
The remainder of Lucas County:
Mahoning County X
Montgomery County X
Morgan County:
Center Township X
The remainder of Morgan County X
Summit County X
Trumbull County X
Washington County:
Waterford Township X
The remainder of Washington County X
All other counties in the State of Ohio X
Ohio—Carbon Monoxide
Designated Area Designation Classification
Date 1 Type Date 1 Type
Cleveland Area
Cuyahoga County 3/7/94 Attainment
Cincinnati
Hamilton County Unclassifiable/Attainment
Columbus
Franklin County Unclassifiable/Attainment
Adams County Unclassifiable/Attainment
Allen County Unclassifiable/Attainment
Ashland County Unclassifiable/Attainment
Ashtabula County Unclassifiable/Attainment
Athens County Unclassifiable/Attainment
Auglaize County Unclassifiable/Attainment
Belmont County Unclassifiable/Attainment
Brown County Unclassifiable/Attainment
Butler County Unclassifiable/Attainment
Carroll County Unclassifiable/Attainment
Champaign County Unclassifiable/Attainment
Clark County Unclassifiable/Attainment
Clermont County Unclassifiable/Attainment
Clinton County Unclassifiable/Attainment
Columbiana County Unclassifiable/Attainment
Coshocton County Unclassifiable/Attainment
Crawford County Unclassifiable/Attainment
Darke County Unclassifiable/Attainment
Defiance County Unclassifiable/Attainment
Delaware County Unclassifiable/Attainment
Erie County Unclassifiable/Attainment
Fairfield County Unclassifiable/Attainment
Fayette County Unclassifiable/Attainment
Code of Federal Regulations 410
Fulton County Unclassifiable/Attainment
Gallia County Unclassifiable/Attainment
Geauga County Unclassifiable/Attainment
Greene County Unclassifiable/Attainment
Guernsey County Unclassifiable/Attainment
Hancock County Unclassifiable/Attainment
Hardin County Unclassifiable/Attainment
Harrison County Unclassifiable/Attainment
Henry County Unclassifiable/Attainment
Highland County Unclassifiable/Attainment
Hocking County Unclassifiable/Attainment
Holmes County Unclassifiable/Attainment
Huron County Unclassifiable/Attainment
Jackson County Unclassifiable/Attainment
Jefferson County 2 Unclassifiable/Attainment
Knox County Unclassifiable/Attainment
Lake County Unclassifiable/Attainment
Lawrence County Unclassifiable/Attainment
Licking County Unclassifiable/Attainment
Logan County Unclassifiable/Attainment
Lorain County Unclassifiable/Attainment
Lucas County Unclassifiable/Attainment
Madison County Unclassifiable/Attainment
Mahoning County Unclassifiable/Attainment
Marion County Unclassifiable/Attainment
Medina County Unclassifiable/Attainment
Meigs County Unclassifiable/Attainment
Mercer County Unclassifiable/Attainment
Miami County Unclassifiable/Attainment
Monroe County Unclassifiable/Attainment
Montgomery County Unclassifiable/Attainment
Morgan County Unclassifiable/Attainment
Morrow County Unclassifiable/Attainment
Muskingum County Unclassifiable/Attainment
Noble County Unclassifiable/Attainment
Ottawa County Unclassifiable/Attainment
Paulding County Unclassifiable/Attainment
Perry County Unclassifiable/Attainment
Pickaway County Unclassifiable/Attainment
Pike County Unclassifiable/Attainment
Portage County Unclassifiable/Attainment
Preble County Unclassifiable/Attainment
Putnam County Unclassifiable/Attainment
Richland County Unclassifiable/Attainment
Ross County Unclassifiable/Attainment
Sandusky County Unclassifiable/Attainment
Scioto County Unclassifiable/Attainment
Seneca County Unclassifiable/Attainment
Shelby County Unclassifiable/Attainment
Stark County Unclassifiable/Attainment
Summit County Unclassifiable/Attainment
Trumbull County Unclassifiable/Attainment
Tuscarawas County Unclassifiable/Attainment
Union County Unclassifiable/Attainment
Van Wert County Unclassifiable/Attainment
Vinton County Unclassifiable/Attainment
Warren County Unclassifiable/Attainment
Washington County Unclassifiable/Attainment
Wayne County Unclassifiable/Attainment
Williams County Unclassifiable/Attainment
Wood County Unclassifiable/Attainment
Wyandot County
1 This date is November 15, 1990, unless otherwise noted.
2 The listed designation does not reflect EPA action under section 107(d)(4)(A). At the date of enactment of the Clean Air Act Amendments, Jefferson County, Ohio; Brooke County, West Virginia; and Hancock County, West Virginia, were designated Unclassifiable/attainment, by operation of law, under section 107(d)(1)(C) of the Clean Air Act. However, these States and EPA are reviewing whether to confirm or reverse that designation under the process set out under section 107(d)(4)(A) and will publish a separate notice to that effect.
Ohio—Lead
Designation area Designation for the 1978 NAAQS a Designation for the 2008 NAAQS
Date 1 Type Date 2 Type
Bellefontaine, OH:
Logan County (part) The portions of Logan County that are bounded by: sections 27, 28, 33, and 34 of Lake Township Not Designated Nonattainment.
Cleveland, OH:
Cuyahoga County (part) The portions of Cuyahoga County that are bounded on the west by Washington Park Blvd./Crete Ave./East 49th St., on the east by East 71st St., on the north by Fleet Ave., and on the south by Grant Ave Not Designated Nonattainment.
Delta, OH:
Fulton County (part) The portions ofFulton County that are bounded by: sections 12 and 13 of York Township andsections 7 and 18 of Swan Creek Township Not Designated Nonattainment.
a Includes Indian country located in each county or area, except as otherwise specified.
1 This date is 90 days after November 6, 1991, unless otherwise noted.
2 This date is December 31, 2010, unless otherwise noted.
Ohio—Ozone (1-Hour Standard)3
Designated area Designation Classification
Date 1 Type Date 1 Type
Canton Area:
Stark County Attainment
Cincinnati-Hamilton Area: 6/14/05 Attainment
Butler County
Clermont County
Hamilton County
Warren County
Cleveland-Akron-Lorain Area: Attainment
Ashtabula County
Cuyahoga County
Geauga County
Lake County
Lorain County
Medina County
Portage County
Summit County
Clinton County Area:
Clinton County Attainment
Columbiana County Area:
Columbiana County Attainment
Columbus Area:
Delaware County Attainment
Franklin County Attainment
Licking County Attainment
Dayton-Springfield Area:
Clark County Attainment
Greene County Attainment
Miami County Attainment
Montgomery County Attainment
Preble County Area:
Preble County Attainment
Steubenville Area:
Jefferson County Attainment
Toledo Area:
Lucas County Attainment
Wood County Attainment
Youngstown-Warren-Sharon Area:
Mahoning County Attainment
Trumbull County Attainment
Adams County Unclassifiable/Attainment
Allen County Unclassifiable/Attainment
Ashland County Unclassifiable/Attainment
Athens County Unclassifiable/Attainment
Auglaize County Unclassifiable/Attainment
Belmont County Unclassifiable/Attainment
Brown County Unclassifiable/Attainment
Code of Federal Regulations 412
Carroll County Unclassifiable/Attainment
Champaign County Unclassifiable/Attainment
Coshocton County Unclassifiable/Attainment
Crawford County Unclassifiable/Attainment
Darke County Unclassifiable/Attainment
Defiance County Unclassifiable/Attainment
Erie County Unclassifiable/Attainment
Fairfield County Unclassifiable/Attainment
Fayette County Unclassifiable/Attainment
Fulton County Unclassifiable/Attainment
Gallia County Unclassifiable/Attainment
Guernsey County Unclassifiable/Attainment
Hancock County Unclassifiable/Attainment
Hardin County Unclassifiable/Attainment
Harrison County Unclassifiable/Attainment
Henry County Unclassifiable/Attainment
Highland County Unclassifiable/Attainment
Hocking County Unclassifiable/Attainment
Holmes County Unclassifiable/Attainment
Huron County Unclassifiable/Attainment
Jackson County Unclassifiable/Attainment
Knox County Unclassifiable/Attainment
Lawrence County Unclassifiable/Attainment
Logan County Unclassifiable/Attainment
Madison County Unclassifiable/Attainment
Marion County Unclassifiable/Attainment
Meigs County Unclassifiable/Attainment
Mercer County Unclassifiable/Attainment
Monroe County Unclassifiable/Attainment
Morgan County Unclassifiable/Attainment
Morrow County Unclassifiable/Attainment
Muskingum County Unclassifiable/Attainment
Noble County Unclassifiable/Attainment
Ottawa County Unclassifiable/Attainment
Paulding County Unclassifiable/Attainment
Perry County Unclassifiable/Attainment
Pickaway County Unclassifiable/Attainment
Pike County Unclassifiable/Attainment
Putnam County Unclassifiable/Attainment
Richland County Unclassifiable/Attainment
Ross County Unclassifiable/Attainment
Sandusky County Unclassifiable/Attainment
Scioto County Unclassifiable/Attainment
Seneca County Unclassifiable/Attainment
Shelby County Unclassifiable/Attainment
Tuscarawas County Unclassifiable/Attainment
Union County Unclassifiable/Attainment
Van Wert County Unclassifiable/Attainment
Vinton County Unclassifiable/Attainment
Washington County Unclassifiable/Attainment
Wayne County Unclassifiable/Attainment
Williams County Unclassifiable/Attainment
Wyandot County Unclassifiable/Attainment
1 This date is November 15, 1990, unless otherwise noted.
3 The 1-hour standard is revoked effective June 15, 2005 for all areas in Ohio. The Canton, Cleveland-Akron-Lorain, Clinton Co, Columbus, Dayton-Springfield, Preble Co, Steubenville, Toledo, Youngstown-Warren-Sharon, and Columbiana Co. areas are maintenance areas for the 1-hour NAAQS for purposes of 40 CFR part 51 subpart X.
Ohio—PM-10
Designated Area Designation Classification
Date Type Date Type
Cuyahoga County 1/10/01 Attainment
Jefferson County
The area bounded by Market Street (State Route 43) from the West Virginia/Ohio border west to Sunset Blvd. (U.S. Route 22), Sunset Blvd. west to the Steubenville Township/Cross Creek Township boundary, the Township boundary south to the Steubenville Corporation limit, the corporation boundary east to State Route 7, State Route 7 South to the Steubenville Township/Wells Township boundary, the Township boundary Unclassifiable east to the West Virginia/Ohio border, and North on the border to Market Street 1/10/01 Attainment
Code of Federal Regulations 413
Rest of State 11/15/90 Unclassifiable
Ohio—NO2
Designated area Does not meet primary standards Cannot be classified or better than national standards
State of Ohio X




Ohio—Ozone (8-Hour Standard)
Designated area Designation a Category/classification
Date 1 Type Date 1 Type
Canton-Massillon, OH: Stark County 6/15/07 Attainment.
Cincinnati-Hamilton, OH-KY-IN:
Butler County May 11, 2010 Attainment
Clermont County
Clinton County
Hamilton County
Warren County
Cleveland-Akron-Lorain, OH:
Ashtabula County
Cuyahoga County 9/15/2009 Attainment.
Geauga County
Lake County
Lorain County
Medina County
Portage County
Summit County
Columbus, OH:
Delaware County 9/15/09 Attainment
Fairfield County
Franklin County
Knox County
Licking County
Madison County
Dayton-Springfield, OH:
Clark County August 13, 2007 Attainment.
Greene County.
Miami County.
Montgomery County.
Lima, OH: Allen County 6/15/07 Attainment.
Parkersburg-Marietta, WV-OH: Washington County 6/15/07 Attainment.
Steubenville-Weirton, OH-WV: Jefferson County 6/15/07 Attainment.
Toledo Area:
Lucas County 08/09/07 Attainment.
Wood County 08/09/07 Attainment.
Wheeling, WV-OH: Belmont County 6/15/2007 Attainment.
Youngstown-Warren-Sharon, PA-OH: June 12, 2007
Columbiana County Attainment
Mahoning County Attainment
Trumbull County Attainment
Rest of State:
Code of Federal Regulations 414
Adams County Unclassifiable/Attainment
Ashland County Unclassifiable/Attainment
Athens County
Auglaize County Unclassifiable/Attainment
Brown County Unclassifiable/Attainment
Carroll County Unclassifiable/Attainment
Champaign County Unclassifiable/Attainment
Coshocton County Unclassifiable/Attainment
Crawford County Unclassifiable/Attainment
Darke County Unclassifiable/Attainment
Defiance County Unclassifiable/Attainment
Erie County Unclassifiable/Attainment
Fayette County Unclassifiable/Attainment
Fulton County Unclassifiable/Attainment
Gallia County Unclassifiable/Attainment
Guernsey County Unclassifiable/Attainment
Hancock County Unclassifiable/Attainment
Hardin County Unclassifiable/Attainment
Harrison County Unclassifiable/Attainment
Henry County Unclassifiable/Attainment
Highland County Unclassifiable/Attainment
Hocking County Unclassifiable/Attainment
Holmes County Unclassifiable/Attainment
Huron County Unclassifiable/Attainment
Jackson County Unclassifiable/Attainment
Lawrence County Unclassifiable/Attainment