GroundRules
40 CFR 81.328: Nebraska.
Where this section sits in the code
- Title 40—Protection of Environment
- CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY
- SUBCHAPTER C—AIR PROGRAMS
- PART 81—DESIGNATION OF AREAS FOR AIR QUALITY PLANNING PURPOSES
- Subpart C—Section 107 Attainment Status Designations
Nebraska—TSP
Designated area Does not meet primary standards Does not meet secondary standards Cannot be classified Better than national standards
AQCR 085 (Douglas and Sarpy Counties):
Douglas County:
Omaha X
Remainder of Douglas County X
Sarpy County:
Bellevue X
Remainder of Sarpy County X
AQCR 086 1 X
AQCR 145 X
AQCR 146:
Cass County X
Dawson County 1 X
Remainder of AQCR 146 X
1 EPA designation replaces state designation.
Nebraska—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
Entire State X
Nebraska—2010 Sulfur Dioxide NAAQS
[Primary]
Designated area 1 Designation
Date 2 Type
Statewide: Attainment/Unclassifiable.
Adams County
Antelope County
Arthur County
Banner County
Blaine County
Boone County
Box Butte County
Boyd County
Brown County
Buffalo County
Burt County
Butler County
Cass County
Cedar County
Chase County
Cherry County
Cheyenne County
Clay County
Colfax County
Cuming County
Custer County
Dakota County
Dawes County
Dawson County
Deuel County
Dixon County
Dodge County
Douglas County 4/30/2021 Attainment/Unclassifiable.
Dundy County
Fillmore County
Franklin County
Frontier County
Furnas County
Gage County
Garden County
Garfield County
Gosper County
Grant County
Greeley County
Hall County
Hamilton County
Harlan County
Hayes County
Hitchcock County
Holt County
Hooker County
Howard County
Jefferson County
Johnson County
Kearney County
Keith County
Keya Paha County
Kimball County
Knox County
Lancaster County 8/16/2021 Attainment/Unclassifiable.
Lincoln County 9/12/2016 Attainment/Unclassifiable.
Logan County
Loup County
Madison County
McPherson County
Merrick County
Morrill County
Nance County
Nemaha County
Nuckolls County
Otoe County 9/12/2016 Attainment/Unclassifiable.
Pawnee County
Perkins County
Phelps County
Pierce County
Platte County
Polk County
Red Willow County
Richardson County
Rock County
Saline County
Sarpy County
Saunders County
Scotts Bluff County
Seward County
Sheridan County
Sherman County
Sioux County
Stanton County
Thayer County
Thomas County
Thurston County
Valley County
Washington County
Wayne County
Webster County
Wheeler County
York County
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.
Nebraska—Carbon Monoxide
Designated Area Designation Classification
Date 1 Type Date 1 Type
Statewide Unclassifiable/Attainment
Adams County
Antelope County
Arthur County
Banner County
Blaine County
Boone County
Box Butte County
Boyd County
Brown County
Buffalo County
Burt County
Butler County
Cass County
Cedar County
Chase County
Cherry County
Cheyenne County
Clay County
Colfax County
Cuming County
Custer County
Dakota County
Dawes County
Dawson County
Deuel County
Dixon County
Dodge County
Douglas County
Dundy County
Fillmore County
Franklin County
Frontier County
Furnas County
Gage County
Garden County
Garfield County
Gosper County
Grant County
Greeley County
Hall County
Hamilton County
Harlan County
Hayes County
Hitchcock County
Holt County
Hooker County
Howard County
Jefferson County
Johnson County
Kearney County
Keith County
Keya Paha County
Kimball County
Knox County
Lancaster County
Lincoln County
Logan County
Loup County
Madison County
McPherson County
Merrick County
Morrill County
Nance County
Nemaha County
Nuckolls County
Otoe County
Pawnee County
Perkins County
Phelps County
Pierce County
Platte County
Polk County
Red Willow County
Richardson County
Rock County
Saline County
Sarpy County
Saunders County
Scotts Bluff County
Seward County
Sheridan County
Sherman County
Sioux County
Stanton County
Thayer County
Thomas County
Thurston County
Valley County
Washington County
Wayne County
Webster County
Wheeler County
York County
1 This date is November 15, 1990, unless otherwise noted.
Nebraska—1978 Lead NAAQS
Designated area Designation Classification
Date Type Date Type
Douglas County (part):
Portion of city of Omaha bounded by: Jones Street on the south, Eleventh Street on the west, Avenue H and the Nebraska-Iowa border on the north, and the Missouri River on the east 4/20/2001 Attainment
Nebraska—Ozone (1-Hour Standard)2
Designated area Designation Classification
Date 1 Type Date 1 Type
Statewide Unclassifiable/Attainment
Adams County
Antelope County
Arthur County
Banner County
Blaine County
Boone County
Box Butte County
Boyd County
Brown County
Buffalo County
Burt County
Butler County
Cass County
Cedar County
Chase County
Cherry County
Cheyenne County
Clay County
Colfax County
Cuming County
Custer County
Dakota County
Dawes County
Dawson County
Deuel County
Dixon County
Dodge County
Douglas County
Dundy County
Fillmore County
Franklin County
Frontier County
Furnas County
Gage County
Garden County
Garfield County
Gosper County
Grant County
Greeley County
Hall County
Hamilton County
Harlan County
Hayes County
Hitchcock County
Holt County
Hooker County
Howard County
Jefferson County
Johnson County
Kearney County
Keith County
Keya Paha County
Kimball County
Knox County
Lancaster County
Lincoln County
Logan County
Loup County
Madison County
McPherson County
Merrick County
Morrill County
Nance County
Nemaha County
Nuckolls County
Otoe County
Pawnee County
Perkins County
Phelps County
Pierce County
Platte County
Polk County
Red Willow County
Richardson County
Rock County
Saline County
Sarpy County
Saunders County
Scotts Bluff County
Seward County
Sheridan County
Sherman County
Sioux County
Stanton County
Thayer County
Thomas County
Thurston County
Valley County
Washington County
Wayne County
Webster County
Wheeler County
York 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 Nebraska.
Nebraska—1997 Annual PM2.5 NAAQS
[Primary and Secondary]
Designated area Designation a Classification
Date 1 Type Date Type
Statewide:
Adams County Unclassifiable/Attainment.
Antelope County Unclassifiable/Attainment.
Arthur County Unclassifiable/Attainment.
Banner County Unclassifiable/Attainment.
Blaine County Unclassifiable/Attainment.
Boone County Unclassifiable/Attainment.
Box Butte County Unclassifiable/Attainment.
Boyd County Unclassifiable/Attainment.
Brown County Unclassifiable/Attainment.
Buffalo County Unclassifiable/Attainment.
Burt County Unclassifiable/Attainment.
Butler County Unclassifiable/Attainment.
Cass County Unclassifiable/Attainment.
Cedar County Unclassifiable/Attainment.
Chase County Unclassifiable/Attainment.
Cherry County Unclassifiable/Attainment.
Cheyenne County Unclassifiable/Attainment.
Clay County Unclassifiable/Attainment.
Colfax County Unclassifiable/Attainment.
Cuming County Unclassifiable/Attainment.
Custer County Unclassifiable/Attainment.
Dakota County Unclassifiable/Attainment.
Dawes County Unclassifiable/Attainment.
Dawson County Unclassifiable/Attainment.
Deuel County Unclassifiable/Attainment.
Dixon County Unclassifiable/Attainment.
Dodge County Unclassifiable/Attainment.
Douglas County Unclassifiable/Attainment.
Dundy County Unclassifiable/Attainment.
Fillmore County Unclassifiable/Attainment.
Franklin County Unclassifiable/Attainment.
Frontier County Unclassifiable/Attainment.
Furnas County Unclassifiable/Attainment.
Gage County Unclassifiable/Attainment.
Garden County Unclassifiable/Attainment.
Garfield County Unclassifiable/Attainment.
Gosper County Unclassifiable/Attainment.
Grant County Unclassifiable/Attainment.
Greeley County Unclassifiable/Attainment.
Hall County Unclassifiable/Attainment.
Hamilton County Unclassifiable/Attainment.
Harlan County Unclassifiable/Attainment.
Hayes County Unclassifiable/Attainment.
Hitchcock County Unclassifiable/Attainment.
Holt County Unclassifiable/Attainment.
Hooker County Unclassifiable/Attainment.
Howard County Unclassifiable/Attainment.
Jefferson County Unclassifiable/Attainment.
Johnson County Unclassifiable/Attainment.
Kearney County Unclassifiable/Attainment.
Keith County Unclassifiable/Attainment.
Keya Paha County Unclassifiable/Attainment.
Kimball County Unclassifiable/Attainment.
Knox County Unclassifiable/Attainment.
Lancaster County Unclassifiable/Attainment.
Lincoln County Unclassifiable/Attainment.
Logan County Unclassifiable/Attainment.
Loup County Unclassifiable/Attainment.
McPherson County Unclassifiable/Attainment.
Madison County Unclassifiable/Attainment.
Merrick County Unclassifiable/Attainment.
Morrill County Unclassifiable/Attainment.
Nance County Unclassifiable/Attainment.
Nemaha County Unclassifiable/Attainment.
Nuckolls County Unclassifiable/Attainment.
Otoe County Unclassifiable/Attainment.
Pawnee County Unclassifiable/Attainment.
Perkins County Unclassifiable/Attainment.
Phelps County Unclassifiable/Attainment.
Pierce County Unclassifiable/Attainment.
Platte County Unclassifiable/Attainment.
Polk County Unclassifiable/Attainment.
Red Willow County Unclassifiable/Attainment.
Richardson County Unclassifiable/Attainment.
Rock County Unclassifiable/Attainment.
Saline County Unclassifiable/Attainment.
Sarpy County Unclassifiable/Attainment.
Saunders County Unclassifiable/Attainment.
Scotts Bluff County Unclassifiable/Attainment.
Seward County Unclassifiable/Attainment.
Sheridan County Unclassifiable/Attainment.
Sherman County Unclassifiable/Attainment.
Sioux County Unclassifiable/Attainment.
Stanton County Unclassifiable/Attainment.
Thayer County Unclassifiable/Attainment.
Thomas County Unclassifiable/Attainment.
Thurston County Unclassifiable/Attainment.
Valley County Unclassifiable/Attainment.
Washington County Unclassifiable/Attainment.
Wayne County Unclassifiable/Attainment.
Webster County Unclassifiable/Attainment.
Wheeler County Unclassifiable/Attainment.
York County Unclassifiable/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.
Nebraska—2012 Annual PM2.5 NAAQS
[Primary]
Designated area 1 Designation Classification
Date 2 Type Date 2 Type
Statewide:
Adams County Unclassifiable/Attainment
Antelope County Unclassifiable/Attainment
Arthur County Unclassifiable/Attainment
Banner County Unclassifiable/Attainment
Blaine County Unclassifiable/Attainment
Boone County Unclassifiable/Attainment
Box Butte County Unclassifiable/Attainment
Boyd County Unclassifiable/Attainment
Brown County Unclassifiable/Attainment
Buffalo County Unclassifiable/Attainment
Burt County Unclassifiable/Attainment
Butler County Unclassifiable/Attainment
Cass County Unclassifiable/Attainment
Cedar County Unclassifiable/Attainment
Chase County Unclassifiable/Attainment
Cherry County Unclassifiable/Attainment
Cheyenne County Unclassifiable/Attainment
Clay County Unclassifiable/Attainment
Colfax County Unclassifiable/Attainment
Cuming County Unclassifiable/Attainment
Custer County Unclassifiable/Attainment
Dakota County Unclassifiable/Attainment
Dawes County Unclassifiable/Attainment
Dawson County Unclassifiable/Attainment
Deuel County Unclassifiable/Attainment
Dixon County Unclassifiable/Attainment
Dodge County Unclassifiable/Attainment
Douglas County Unclassifiable/Attainment
Dundy County Unclassifiable/Attainment
Fillmore County Unclassifiable/Attainment
Franklin County Unclassifiable/Attainment
Frontier County Unclassifiable/Attainment
Furnas County Unclassifiable/Attainment
Gage County Unclassifiable/Attainment
Garden County Unclassifiable/Attainment
Garfield County Unclassifiable/Attainment
Gosper County Unclassifiable/Attainment
Grant County Unclassifiable/Attainment
Greeley County Unclassifiable/Attainment
Hall County Unclassifiable/Attainment
Hamilton County Unclassifiable/Attainment
Harlan County Unclassifiable/Attainment
Hayes County Unclassifiable/Attainment
Hitchcock County Unclassifiable/Attainment
Holt County Unclassifiable/Attainment
Hooker County Unclassifiable/Attainment
Howard County Unclassifiable/Attainment
Jefferson County Unclassifiable/Attainment
Johnson County Unclassifiable/Attainment
Kearney County Unclassifiable/Attainment
Keith County Unclassifiable/Attainment
Keya Paha County Unclassifiable/Attainment
Kimball County Unclassifiable/Attainment
Knox County Unclassifiable/Attainment
Lancaster County Unclassifiable/Attainment
Lincoln County Unclassifiable/Attainment
Logan County Unclassifiable/Attainment
Loup County Unclassifiable/Attainment
McPherson County Unclassifiable/Attainment
Madison County Unclassifiable/Attainment
Merrick County Unclassifiable/Attainment
Morrill County Unclassifiable/Attainment
Nance County Unclassifiable/Attainment
Nemaha County Unclassifiable/Attainment
Nuckolls County Unclassifiable/Attainment
Otoe County Unclassifiable/Attainment
Pawnee County Unclassifiable/Attainment
Perkins County Unclassifiable/Attainment
Phelps County Unclassifiable/Attainment
Pierce County Unclassifiable/Attainment
Platte County Unclassifiable/Attainment
Polk County Unclassifiable/Attainment
Red Willow County Unclassifiable/Attainment
Richardson County Unclassifiable/Attainment
Rock County Unclassifiable/Attainment
Saline County Unclassifiable/Attainment
Sarpy County Unclassifiable/Attainment
Saunders County Unclassifiable/Attainment
Scotts Bluff County Unclassifiable/Attainment
Seward County Unclassifiable/Attainment
Sheridan County Unclassifiable/Attainment
Sherman County Unclassifiable/Attainment
Sioux County Unclassifiable/Attainment
Stanton County Unclassifiable/Attainment
Thayer County Unclassifiable/Attainment
Thomas County Unclassifiable/Attainment
Thurston County Unclassifiable/Attainment
Valley County Unclassifiable/Attainment
Washington County Unclassifiable/Attainment
Wayne County Unclassifiable/Attainment
Webster County Unclassifiable/Attainment
Wheeler County Unclassifiable/Attainment
York County Unclassifiable/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.
Nebraska—1997 24-Hour PM2.5 NAAQS
[Primary and Secondary]
Designated area Designation a Classification
Date 1 Type Date Type
Statewide:
Adams County Unclassifiable/Attainment.
Antelope County Unclassifiable/Attainment.
Arthur County Unclassifiable/Attainment.
Banner County Unclassifiable/Attainment.
Blaine County Unclassifiable/Attainment.
Boone County Unclassifiable/Attainment.
Box Butte County Unclassifiable/Attainment.
Boyd County Unclassifiable/Attainment.
Brown County Unclassifiable/Attainment.
Buffalo County Unclassifiable/Attainment.
Burt County Unclassifiable/Attainment.
Butler County Unclassifiable/Attainment.
Cass County Unclassifiable/Attainment.
Cedar County Unclassifiable/Attainment.
Chase County Unclassifiable/Attainment.
Cherry County Unclassifiable/Attainment.
Cheyenne County Unclassifiable/Attainment.
Clay County Unclassifiable/Attainment.
Colfax County Unclassifiable/Attainment.
Cuming County Unclassifiable/Attainment.
Custer County Unclassifiable/Attainment.
Dakota County Unclassifiable/Attainment.
Dawes County Unclassifiable/Attainment.
Dawson County Unclassifiable/Attainment.
Deuel County Unclassifiable/Attainment.
Dixon County Unclassifiable/Attainment.
Dodge County Unclassifiable/Attainment.
Douglas County Unclassifiable/Attainment.
Dundy County Unclassifiable/Attainment.
Fillmore County Unclassifiable/Attainment.
Franklin County Unclassifiable/Attainment.
Frontier County Unclassifiable/Attainment.
Furnas County Unclassifiable/Attainment.
Gage County Unclassifiable/Attainment.
Garden County Unclassifiable/Attainment.
Garfield County Unclassifiable/Attainment.
Gosper County Unclassifiable/Attainment.
Grant County Unclassifiable/Attainment.
Greeley County Unclassifiable/Attainment.
Hall County Unclassifiable/Attainment.
Hamilton County Unclassifiable/Attainment.
Harlan County Unclassifiable/Attainment.
Hayes County Unclassifiable/Attainment.
Hitchcock County Unclassifiable/Attainment.
Holt County Unclassifiable/Attainment.
Hooker County Unclassifiable/Attainment.
Howard County Unclassifiable/Attainment.
Jefferson County Unclassifiable/Attainment.
Johnson County Unclassifiable/Attainment.
Kearney County Unclassifiable/Attainment.
Keith County Unclassifiable/Attainment.
Keya Paha County Unclassifiable/Attainment.
Kimball County Unclassifiable/Attainment.
Knox County Unclassifiable/Attainment.
Lancaster County Unclassifiable/Attainment.
Lincoln County Unclassifiable/Attainment.
Logan County Unclassifiable/Attainment.
Loup County Unclassifiable/Attainment.
McPherson County Unclassifiable/Attainment.
Madison County Unclassifiable/Attainment.
Merrick County Unclassifiable/Attainment.
Morrill County Unclassifiable/Attainment.
Nance County Unclassifiable/Attainment.
Nemaha County Unclassifiable/Attainment.
Nuckolls County Unclassifiable/Attainment.
Otoe County Unclassifiable/Attainment.
Pawnee County Unclassifiable/Attainment.
Perkins County Unclassifiable/Attainment.
Phelps County Unclassifiable/Attainment.
Pierce County Unclassifiable/Attainment.
Platte County Unclassifiable/Attainment.
Polk County Unclassifiable/Attainment.
Red Willow County Unclassifiable/Attainment.
Richardson County Unclassifiable/Attainment.
Rock County Unclassifiable/Attainment.
Saline County Unclassifiable/Attainment.
Sarpy County Unclassifiable/Attainment.
Saunders County Unclassifiable/Attainment.
Scotts Bluff County Unclassifiable/Attainment.
Seward County Unclassifiable/Attainment.
Sheridan County Unclassifiable/Attainment.
Sherman County Unclassifiable/Attainment.
Sioux County Unclassifiable/Attainment.
Stanton County Unclassifiable/Attainment.
Thayer County Unclassifiable/Attainment.
Thomas County Unclassifiable/Attainment.
Thurston County Unclassifiable/Attainment.
Valley County Unclassifiable/Attainment.
Washington County Unclassifiable/Attainment.
Wayne County Unclassifiable/Attainment.
Webster County Unclassifiable/Attainment.
Wheeler County Unclassifiable/Attainment.
York County Unclassifiable/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.
Nebraska—2006 24-Hour PM2.5 NAAQS
[Primary and Secondary]
Designated area Designation a Classification
Date 1 Type Date Type
Statewide:
Adams County Unclassifiable/Attainment.
Antelope County Unclassifiable/Attainment.
Arthur County Unclassifiable/Attainment.
Banner County Unclassifiable/Attainment.
Blaine County Unclassifiable/Attainment.
Boone County Unclassifiable/Attainment.
Box Butte County Unclassifiable/Attainment.
Boyd County Unclassifiable/Attainment.
Brown County Unclassifiable/Attainment.
Buffalo County Unclassifiable/Attainment.
Burt County Unclassifiable/Attainment.
Butler County Unclassifiable/Attainment.
Cass County Unclassifiable/Attainment.
Cedar County Unclassifiable/Attainment.
Chase County Unclassifiable/Attainment.
Cherry County Unclassifiable/Attainment.
Cheyenne County Unclassifiable/Attainment.
Clay County Unclassifiable/Attainment.
Colfax County Unclassifiable/Attainment.
Cuming County Unclassifiable/Attainment.
Custer County Unclassifiable/Attainment.
Dakota County Unclassifiable/Attainment.
Dawes County Unclassifiable/Attainment.
Dawson County Unclassifiable/Attainment.
Deuel County Unclassifiable/Attainment.
Dixon County Unclassifiable/Attainment.
Dodge County Unclassifiable/Attainment.
Douglas County Unclassifiable/Attainment.
Dundy County Unclassifiable/Attainment.
Fillmore County Unclassifiable/Attainment.
Franklin County Unclassifiable/Attainment.
Frontier County Unclassifiable/Attainment.
Furnas County Unclassifiable/Attainment.
Gage County Unclassifiable/Attainment.
Garden County Unclassifiable/Attainment.
Garfield County Unclassifiable/Attainment.
Gosper County Unclassifiable/Attainment.
Grant County Unclassifiable/Attainment.
Greeley County Unclassifiable/Attainment.
Hall County Unclassifiable/Attainment.
Hamilton County Unclassifiable/Attainment.
Harlan County Unclassifiable/Attainment.
Hayes County Unclassifiable/Attainment.
Hitchcock County Unclassifiable/Attainment.
Holt County Unclassifiable/Attainment.
Hooker County Unclassifiable/Attainment.
Howard County Unclassifiable/Attainment.
Jefferson County Unclassifiable/Attainment.
Johnson County Unclassifiable/Attainment.
Kearney County Unclassifiable/Attainment.
Keith County Unclassifiable/Attainment.
Keya Paha County Unclassifiable/Attainment.
Kimball County Unclassifiable/Attainment.
Knox County Unclassifiable/Attainment.
Lancaster County Unclassifiable/Attainment.
Lincoln County Unclassifiable/Attainment.
Logan County Unclassifiable/Attainment.
Loup County Unclassifiable/Attainment.
McPherson County Unclassifiable/Attainment.
Madison County Unclassifiable/Attainment.
Merrick County Unclassifiable/Attainment.
Morrill County Unclassifiable/Attainment.
Nance County Unclassifiable/Attainment.
Nemaha County Unclassifiable/Attainment.
Nuckolls County Unclassifiable/Attainment.
Otoe County Unclassifiable/Attainment.
Pawnee County Unclassifiable/Attainment.
Perkins County Unclassifiable/Attainment.
Phelps County Unclassifiable/Attainment.
Pierce County Unclassifiable/Attainment.
Platte County Unclassifiable/Attainment.
Polk County Unclassifiable/Attainment.
Red Willow County Unclassifiable/Attainment.
Richardson County Unclassifiable/Attainment.
Rock County Unclassifiable/Attainment.
Saline County Unclassifiable/Attainment.
Sarpy County Unclassifiable/Attainment.
Saunders County Unclassifiable/Attainment.
Scotts Bluff County Unclassifiable/Attainment.
Seward County Unclassifiable/Attainment.
Sheridan County Unclassifiable/Attainment.
Sherman County Unclassifiable/Attainment.
Sioux County Unclassifiable/Attainment.
Stanton County Unclassifiable/Attainment.
Thayer County Unclassifiable/Attainment.
Thomas County Unclassifiable/Attainment.
Thurston County Unclassifiable/Attainment.
Valley County Unclassifiable/Attainment.
Washington County Unclassifiable/Attainment.
Wayne County Unclassifiable/Attainment.
Webster County Unclassifiable/Attainment.
Wheeler County Unclassifiable/Attainment.
York County Unclassifiable/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.
Nebraska—NO2 (1971 Annual Standard)
Designated area Does not meet primary standards Cannot be classified or better than national standards
Entire State X
Nebraska—NO2 (2010 1-Hour Standard)
Designated area Designation a
Date 1 Type
Adams County Unclassifiable/Attainment.
Antelope County Unclassifiable/Attainment.
Arthur County Unclassifiable/Attainment.
Banner County Unclassifiable/Attainment.
Blaine County Unclassifiable/Attainment.
Boone County Unclassifiable/Attainment.
Box Butte County Unclassifiable/Attainment.
Boyd County Unclassifiable/Attainment.
Brown County Unclassifiable/Attainment.
Buffalo County Unclassifiable/Attainment.
Burt County Unclassifiable/Attainment.
Butler County Unclassifiable/Attainment.
Cass County Unclassifiable/Attainment.
Cedar County Unclassifiable/Attainment.
Chase County Unclassifiable/Attainment.
Cherry County Unclassifiable/Attainment.
Cheyenne County Unclassifiable/Attainment.
Clay County Unclassifiable/Attainment.
Colfax County Unclassifiable/Attainment.
Cuming County Unclassifiable/Attainment.
Custer County Unclassifiable/Attainment.
Dakota County Unclassifiable/Attainment.
Dawes County Unclassifiable/Attainment.
Dawson County Unclassifiable/Attainment.
Deuel County Unclassifiable/Attainment.
Dixon County Unclassifiable/Attainment.
Dodge County Unclassifiable/Attainment.
Douglas County Unclassifiable/Attainment.
Dundy County Unclassifiable/Attainment.
Fillmore County Unclassifiable/Attainment.
Franklin County Unclassifiable/Attainment.
Frontier County Unclassifiable/Attainment.
Furnas County Unclassifiable/Attainment.
Gage County Unclassifiable/Attainment.
Garden County Unclassifiable/Attainment.
Garfield County Unclassifiable/Attainment.
Gosper County Unclassifiable/Attainment.
Grant County Unclassifiable/Attainment.
Greeley County Unclassifiable/Attainment.
Hall County Unclassifiable/Attainment.
Hamilton County Unclassifiable/Attainment.
Harlan County Unclassifiable/Attainment.
Hayes County Unclassifiable/Attainment.
Hitchcock County Unclassifiable/Attainment.
Holt County Unclassifiable/Attainment.
Hooker County Unclassifiable/Attainment.
Howard County Unclassifiable/Attainment.
Jefferson County Unclassifiable/Attainment.
Johnson County Unclassifiable/Attainment.
Kearney County Unclassifiable/Attainment.
Keith County Unclassifiable/Attainment.
Keya Paha County Unclassifiable/Attainment.
Kimball County Unclassifiable/Attainment.
Knox County Unclassifiable/Attainment.
Lancaster County Unclassifiable/Attainment.
Lincoln County Unclassifiable/Attainment.
Logan County Unclassifiable/Attainment.
Loup County Unclassifiable/Attainment.
McPherson County Unclassifiable/Attainment.
Madison County Unclassifiable/Attainment.
Merrick County Unclassifiable/Attainment.
Morrill County Unclassifiable/Attainment.
Nance County Unclassifiable/Attainment.
Nemaha County Unclassifiable/Attainment.
Nuckolls County Unclassifiable/Attainment.
Otoe County Unclassifiable/Attainment.
Pawnee County Unclassifiable/Attainment.
Perkins County Unclassifiable/Attainment.
Phelps County Unclassifiable/Attainment.
Pierce County Unclassifiable/Attainment.
Platte County Unclassifiable/Attainment.
Polk County Unclassifiable/Attainment.
Red Willow County Unclassifiable/Attainment.
Richardson County Unclassifiable/Attainment.
Rock County Unclassifiable/Attainment.
Saline County Unclassifiable/Attainment.
Sarpy County Unclassifiable/Attainment.
Saunders County Unclassifiable/Attainment.
Scotts Bluff County Unclassifiable/Attainment.
Seward County Unclassifiable/Attainment.
Sheridan County Unclassifiable/Attainment.
Sherman County Unclassifiable/Attainment.
Sioux County Unclassifiable/Attainment.
Stanton County Unclassifiable/Attainment.
Thayer County Unclassifiable/Attainment.
Thomas County Unclassifiable/Attainment.
Thurston County Unclassifiable/Attainment.
Valley County Unclassifiable/Attainment.
Washington County Unclassifiable/Attainment.
Wayne County Unclassifiable/Attainment.
Webster County Unclassifiable/Attainment.
Wheeler County Unclassifiable/Attainment.
York County Unclassifiable/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.
Nebraska—1997 8-Hour Ozone NAAQS
[Primary and Secondary]
Designated area Designation a Category/classification
Date 1 Type Date 1 Type
Statewide: Unclassifiable/Attainment
Adams County
Antelope County
Arthur County
Banner County
Blaine County
Boone County
Box Butte County
Boyd County
Brown County
Buffalo County
Burt County
Butler County
Cass County
Cedar County
Chase County
Cherry County
Cheyenne County
Clay County
Colfax County
Cuming County
Custer County
Dakota County
Dawes County
Dawson County
Deuel County
Dixon County
Dodge County
Douglas County
Dundy County
Fillmore County
Franklin County
Frontier County
Furnas County
Gage County
Garden County
Garfield County
Gosper County
Grant County
Greeley County
Hall County
Hamilton County
Harlan County
Hayes County
Hitchcock County
Holt County
Hooker County
Howard County
Jefferson County
Johnson County
Kearney County
Keith County
Keya Paha County
Kimball County
Knox County
Lancaster County
Lincoln County
Logan County
Loup County
Madison County
McPherson County
Merrick County
Morrill County
Nance County
Nemaha County
Nuckolls County
Otoe County
Pawnee County
Perkins County
Phelps County
Pierce County
Platte County
Polk County
Red Willow County
Richardson County
Rock County
Saline County
Sarpy County
Saunders County
Scotts Bluff County
Seward County
Sheridan County
Sherman County
Sioux County
Stanton County
Thayer County
Thomas County
Thurston County
Valley County
Washington County
Wayne County
Webster County
Wheeler County
York 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.
Nebraska—2008 8-Hour Ozone NAAQS
[Primary and Secondary]
Designated area Designation Classification
Date 1 Type Date 1 Type
Statewide: 2 Unclassifiable/Attainment
Adams County
Antelope County
Arthur County
Banner County
Blaine County
Boone County
Box Butte County
Boyd County
Brown County
Buffalo County
Burt County
Butler County
Cass County
Cedar County
Chase County
Cherry County
Cheyenne County
Clay County
Colfax County
Cuming County
Custer County
Dakota County
Dawes County
Dawson County
Deuel County
Dixon County
Dodge County
Douglas County
Dundy County
Fillmore County
Franklin County
Frontier County
Furnas County
Gage County
Garden County
Garfield County
Gosper County
Grant County
Greeley County
Hall County
Hamilton County
Harlan County
Hayes County
Hitchcock County
Holt County
Hooker County
Howard County
Jefferson County
Johnson County
Kearney County
Keith County
Keya Paha County
Kimball County
Knox County
Lancaster County
Lincoln County
Logan County
Loup County
McPherson County
Madison County
Merrick County
Morrill County
Nance County
Nemaha County
Nuckolls County
Otoe County
Pawnee County
Perkins County
Phelps County
Pierce County
Platte County
Polk County
Red Willow County
Richardson County
Rock County
Saline County
Sarpy County
Saunders County
Scotts Bluff County
Seward County
Sheridan County
Sherman County
Sioux County
Stanton County
Thayer County
Thomas County
Thurston County
Valley County
Washington County
Wayne County
Webster County
Wheeler County
York County
1 This date is July 20, 2012, unless otherwise noted.
2 Includes any Indian country in each county or area, unless otherwise specified.
Nebraska—2015 8-Hour Ozone NAAQS
[Primary and Secondary]
Designated area 1 Designation Classification
Date 2 Type Date Type
Statewide Attainment/Unclassifiable
Adams County
Antelope County
Arthur County
Banner County
Blaine County
Boone County
Box Butte County
Boyd County
Brown County
Buffalo County
Burt County
Butler County
Cass County
Cedar County
Chase County
Cherry County
Cheyenne County
Clay County
Colfax County
Cuming County
Custer County
Dakota County
Dawes County
Dawson County
Deuel County
Dixon County
Dodge County
Douglas County
Dundy County
Fillmore County
Franklin County
Frontier County
Furnas County
Gage County
Garden County
Garfield County
Gosper County
Grant County
Greeley County
Hall County
Hamilton County
Harlan County
Hayes County
Hitchcock County
Holt County
Hooker County
Howard County
Jefferson County
Johnson County
Kearney County
Keith County
Keya Paha County
Kimball County
Knox County
Lancaster County
Lincoln County
Logan County
Loup County
McPherson County
Madison County
Merrick County
Morrill County
Nance County
Nemaha County
Nuckolls County
Otoe County
Pawnee County
Perkins County
Phelps County
Pierce County
Platte County
Polk County
Red Willow County
Richardson County
Rock County
Saline County
Sarpy County
Saunders County
Scotts Bluff County
Seward County
Sheridan County
Sherman County
Sioux County
Stanton County
Thayer County
Thomas County
Thurston County
Valley County
Washington County
Wayne County
Webster County
Wheeler County
York County
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 January 16, 2018, unless otherwise noted.
Nebraska—2008 Lead NAAQS
Designated area Designation for the 2008 NAAQS a
Date 1 Type
Whole State Unclassifiable/Attainment.
a Includes Indian Country located in each county or area, except as otherwise specified.
1 December 31, 2011 unless otherwise noted.
Collected 2026-08-27T02:26:04Z. Source file · JSON