{"data":{"id":"us/40-cfr-81.328","jurisdiction":"us","citation":"40 CFR 81.328","heading":"Nebraska.","body":"Nebraska—TSP\nDesignated area Does not meet primary standards Does not meet secondary standards Cannot be classified Better than national standards\nAQCR 085 (Douglas and Sarpy Counties):\nDouglas County:\nOmaha X\nRemainder of Douglas County X\nSarpy County:\nBellevue X\nRemainder of Sarpy County X\nAQCR 086 1 X\nAQCR 145 X\nAQCR 146:\nCass County X\nDawson County 1 X\nRemainder of AQCR 146 X\n1 EPA designation replaces state designation.\nNebraska—1971 Sulfur Dioxide NAAQS\n[Primary and Secondary]\nDesignated area Does not meet primary standards Does not meet secondary standards Cannot be classified Better than national standards\nEntire State X\nNebraska—2010 Sulfur Dioxide NAAQS\n[Primary]\nDesignated area 1 Designation\nDate 2 Type\nStatewide: Attainment/Unclassifiable.\nAdams County\nAntelope County\nArthur County\nBanner County\nBlaine County\nBoone County\nBox Butte County\nBoyd County\nBrown County\nBuffalo County\nBurt County\nButler County\nCass County\nCedar County\nChase County\nCherry County\nCheyenne County\nClay County\nColfax County\nCuming County\nCuster County\nDakota County\nDawes County\nDawson County\nDeuel County\nDixon County\nDodge County\nDouglas County 4/30/2021 Attainment/Unclassifiable.\nDundy County\nFillmore County\nFranklin County\nFrontier County\nFurnas County\nGage County\nGarden County\nGarfield County\nGosper County\nGrant County\nGreeley County\nHall County\nHamilton County\nHarlan County\nHayes County\nHitchcock County\nHolt County\nHooker County\nHoward County\nJefferson County\nJohnson County\nKearney County\nKeith County\nKeya Paha County\nKimball County\nKnox County\nLancaster County 8/16/2021 Attainment/Unclassifiable.\nLincoln County 9/12/2016 Attainment/Unclassifiable.\nLogan County\nLoup County\nMadison County\nMcPherson County\nMerrick County\nMorrill County\nNance County\nNemaha County\nNuckolls County\nOtoe County 9/12/2016 Attainment/Unclassifiable.\nPawnee County\nPerkins County\nPhelps County\nPierce County\nPlatte County\nPolk County\nRed Willow County\nRichardson County\nRock County\nSaline County\nSarpy County\nSaunders County\nScotts Bluff County\nSeward County\nSheridan County\nSherman County\nSioux County\nStanton County\nThayer County\nThomas County\nThurston County\nValley County\nWashington County\nWayne County\nWebster County\nWheeler County\nYork County\n1 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.\n2 This date is April 9, 2018, unless otherwise noted.\nNebraska—Carbon Monoxide\nDesignated Area Designation Classification\nDate 1 Type Date 1 Type\nStatewide Unclassifiable/Attainment\nAdams County\nAntelope County\nArthur County\nBanner County\nBlaine County\nBoone County\nBox Butte County\nBoyd County\nBrown County\nBuffalo County\nBurt County\nButler County\nCass County\nCedar County\nChase County\nCherry County\nCheyenne County\nClay County\nColfax County\nCuming County\nCuster County\nDakota County\nDawes County\nDawson County\nDeuel County\nDixon County\nDodge County\nDouglas County\nDundy County\nFillmore County\nFranklin County\nFrontier County\nFurnas County\nGage County\nGarden County\nGarfield County\nGosper County\nGrant County\nGreeley County\nHall County\nHamilton County\nHarlan County\nHayes County\nHitchcock County\nHolt County\nHooker County\nHoward County\nJefferson County\nJohnson County\nKearney County\nKeith County\nKeya Paha County\nKimball County\nKnox County\nLancaster County\nLincoln County\nLogan County\nLoup County\nMadison County\nMcPherson County\nMerrick County\nMorrill County\nNance County\nNemaha County\nNuckolls County\nOtoe County\nPawnee County\nPerkins County\nPhelps County\nPierce County\nPlatte County\nPolk County\nRed Willow County\nRichardson County\nRock County\nSaline County\nSarpy County\nSaunders County\nScotts Bluff County\nSeward County\nSheridan County\nSherman County\nSioux County\nStanton County\nThayer County\nThomas County\nThurston County\nValley County\nWashington County\nWayne County\nWebster County\nWheeler County\nYork County\n1 This date is November 15, 1990, unless otherwise noted.\nNebraska—1978 Lead NAAQS\nDesignated area Designation Classification\nDate Type Date Type\nDouglas County (part):\nPortion 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\nNebraska—Ozone (1-Hour Standard)2\nDesignated area Designation Classification\nDate 1 Type Date 1 Type\nStatewide Unclassifiable/Attainment\nAdams County\nAntelope County\nArthur County\nBanner County\nBlaine County\nBoone County\nBox Butte County\nBoyd County\nBrown County\nBuffalo County\nBurt County\nButler County\nCass County\nCedar County\nChase County\nCherry County\nCheyenne County\nClay County\nColfax County\nCuming County\nCuster County\nDakota County\nDawes County\nDawson County\nDeuel County\nDixon County\nDodge County\nDouglas County\nDundy County\nFillmore County\nFranklin County\nFrontier County\nFurnas County\nGage County\nGarden County\nGarfield County\nGosper County\nGrant County\nGreeley County\nHall County\nHamilton County\nHarlan County\nHayes County\nHitchcock County\nHolt County\nHooker County\nHoward County\nJefferson County\nJohnson County\nKearney County\nKeith County\nKeya Paha County\nKimball County\nKnox County\nLancaster County\nLincoln County\nLogan County\nLoup County\nMadison County\nMcPherson County\nMerrick County\nMorrill County\nNance County\nNemaha County\nNuckolls County\nOtoe County\nPawnee County\nPerkins County\nPhelps County\nPierce County\nPlatte County\nPolk County\nRed Willow County\nRichardson County\nRock County\nSaline County\nSarpy County\nSaunders County\nScotts Bluff County\nSeward County\nSheridan County\nSherman County\nSioux County\nStanton County\nThayer County\nThomas County\nThurston County\nValley County\nWashington County\nWayne County\nWebster County\nWheeler County\nYork County\n1 This date is October 18, 2000, unless otherwise noted.\n2 The 1-hour ozone standard is revoked effective June 15, 2005 for all areas in Nebraska.\nNebraska—1997 Annual PM2.5 NAAQS\n[Primary and Secondary]\nDesignated area Designation a Classification\nDate 1 Type Date Type\nStatewide:\nAdams County Unclassifiable/Attainment.\nAntelope County Unclassifiable/Attainment.\nArthur County Unclassifiable/Attainment.\nBanner County Unclassifiable/Attainment.\nBlaine County Unclassifiable/Attainment.\nBoone County Unclassifiable/Attainment.\nBox Butte County Unclassifiable/Attainment.\nBoyd County Unclassifiable/Attainment.\nBrown County Unclassifiable/Attainment.\nBuffalo County Unclassifiable/Attainment.\nBurt County Unclassifiable/Attainment.\nButler County Unclassifiable/Attainment.\nCass County Unclassifiable/Attainment.\nCedar County Unclassifiable/Attainment.\nChase County Unclassifiable/Attainment.\nCherry County Unclassifiable/Attainment.\nCheyenne County Unclassifiable/Attainment.\nClay County Unclassifiable/Attainment.\nColfax County Unclassifiable/Attainment.\nCuming County Unclassifiable/Attainment.\nCuster County Unclassifiable/Attainment.\nDakota County Unclassifiable/Attainment.\nDawes County Unclassifiable/Attainment.\nDawson County Unclassifiable/Attainment.\nDeuel County Unclassifiable/Attainment.\nDixon County Unclassifiable/Attainment.\nDodge County Unclassifiable/Attainment.\nDouglas County Unclassifiable/Attainment.\nDundy County Unclassifiable/Attainment.\nFillmore County Unclassifiable/Attainment.\nFranklin County Unclassifiable/Attainment.\nFrontier County Unclassifiable/Attainment.\nFurnas County Unclassifiable/Attainment.\nGage County Unclassifiable/Attainment.\nGarden County Unclassifiable/Attainment.\nGarfield County Unclassifiable/Attainment.\nGosper County Unclassifiable/Attainment.\nGrant County Unclassifiable/Attainment.\nGreeley County Unclassifiable/Attainment.\nHall County Unclassifiable/Attainment.\nHamilton County Unclassifiable/Attainment.\nHarlan County Unclassifiable/Attainment.\nHayes County Unclassifiable/Attainment.\nHitchcock County Unclassifiable/Attainment.\nHolt County Unclassifiable/Attainment.\nHooker County Unclassifiable/Attainment.\nHoward County Unclassifiable/Attainment.\nJefferson County Unclassifiable/Attainment.\nJohnson County Unclassifiable/Attainment.\nKearney County Unclassifiable/Attainment.\nKeith County Unclassifiable/Attainment.\nKeya Paha County Unclassifiable/Attainment.\nKimball County Unclassifiable/Attainment.\nKnox County Unclassifiable/Attainment.\nLancaster County Unclassifiable/Attainment.\nLincoln County Unclassifiable/Attainment.\nLogan County Unclassifiable/Attainment.\nLoup County Unclassifiable/Attainment.\nMcPherson County Unclassifiable/Attainment.\nMadison County Unclassifiable/Attainment.\nMerrick County Unclassifiable/Attainment.\nMorrill County Unclassifiable/Attainment.\nNance County Unclassifiable/Attainment.\nNemaha County Unclassifiable/Attainment.\nNuckolls County Unclassifiable/Attainment.\nOtoe County Unclassifiable/Attainment.\nPawnee County Unclassifiable/Attainment.\nPerkins County Unclassifiable/Attainment.\nPhelps County Unclassifiable/Attainment.\nPierce County Unclassifiable/Attainment.\nPlatte County Unclassifiable/Attainment.\nPolk County Unclassifiable/Attainment.\nRed Willow County Unclassifiable/Attainment.\nRichardson County Unclassifiable/Attainment.\nRock County Unclassifiable/Attainment.\nSaline County Unclassifiable/Attainment.\nSarpy County Unclassifiable/Attainment.\nSaunders County Unclassifiable/Attainment.\nScotts Bluff County Unclassifiable/Attainment.\nSeward County Unclassifiable/Attainment.\nSheridan County Unclassifiable/Attainment.\nSherman County Unclassifiable/Attainment.\nSioux County Unclassifiable/Attainment.\nStanton County Unclassifiable/Attainment.\nThayer County Unclassifiable/Attainment.\nThomas County Unclassifiable/Attainment.\nThurston County Unclassifiable/Attainment.\nValley County Unclassifiable/Attainment.\nWashington County Unclassifiable/Attainment.\nWayne County Unclassifiable/Attainment.\nWebster County Unclassifiable/Attainment.\nWheeler County Unclassifiable/Attainment.\nYork County Unclassifiable/Attainment.\na Includes Indian Country located in each county or area, except as otherwise specified.\n1 This date is 90 days after January 5, 2005, unless otherwise noted.\nNebraska—2012 Annual PM2.5 NAAQS\n[Primary]\nDesignated area 1 Designation Classification\nDate 2 Type Date 2 Type\nStatewide:\nAdams County Unclassifiable/Attainment\nAntelope County Unclassifiable/Attainment\nArthur County Unclassifiable/Attainment\nBanner County Unclassifiable/Attainment\nBlaine County Unclassifiable/Attainment\nBoone County Unclassifiable/Attainment\nBox Butte County Unclassifiable/Attainment\nBoyd County Unclassifiable/Attainment\nBrown County Unclassifiable/Attainment\nBuffalo County Unclassifiable/Attainment\nBurt County Unclassifiable/Attainment\nButler County Unclassifiable/Attainment\nCass County Unclassifiable/Attainment\nCedar County Unclassifiable/Attainment\nChase County Unclassifiable/Attainment\nCherry County Unclassifiable/Attainment\nCheyenne County Unclassifiable/Attainment\nClay County Unclassifiable/Attainment\nColfax County Unclassifiable/Attainment\nCuming County Unclassifiable/Attainment\nCuster County Unclassifiable/Attainment\nDakota County Unclassifiable/Attainment\nDawes County Unclassifiable/Attainment\nDawson County Unclassifiable/Attainment\nDeuel County Unclassifiable/Attainment\nDixon County Unclassifiable/Attainment\nDodge County Unclassifiable/Attainment\nDouglas County Unclassifiable/Attainment\nDundy County Unclassifiable/Attainment\nFillmore County Unclassifiable/Attainment\nFranklin County Unclassifiable/Attainment\nFrontier County Unclassifiable/Attainment\nFurnas County Unclassifiable/Attainment\nGage County Unclassifiable/Attainment\nGarden County Unclassifiable/Attainment\nGarfield County Unclassifiable/Attainment\nGosper County Unclassifiable/Attainment\nGrant County Unclassifiable/Attainment\nGreeley County Unclassifiable/Attainment\nHall County Unclassifiable/Attainment\nHamilton County Unclassifiable/Attainment\nHarlan County Unclassifiable/Attainment\nHayes County Unclassifiable/Attainment\nHitchcock County Unclassifiable/Attainment\nHolt County Unclassifiable/Attainment\nHooker County Unclassifiable/Attainment\nHoward County Unclassifiable/Attainment\nJefferson County Unclassifiable/Attainment\nJohnson County Unclassifiable/Attainment\nKearney County Unclassifiable/Attainment\nKeith County Unclassifiable/Attainment\nKeya Paha County Unclassifiable/Attainment\nKimball County Unclassifiable/Attainment\nKnox County Unclassifiable/Attainment\nLancaster County Unclassifiable/Attainment\nLincoln County Unclassifiable/Attainment\nLogan County Unclassifiable/Attainment\nLoup County Unclassifiable/Attainment\nMcPherson County Unclassifiable/Attainment\nMadison County Unclassifiable/Attainment\nMerrick County Unclassifiable/Attainment\nMorrill County Unclassifiable/Attainment\nNance County Unclassifiable/Attainment\nNemaha County Unclassifiable/Attainment\nNuckolls County Unclassifiable/Attainment\nOtoe County Unclassifiable/Attainment\nPawnee County Unclassifiable/Attainment\nPerkins County Unclassifiable/Attainment\nPhelps County Unclassifiable/Attainment\nPierce County Unclassifiable/Attainment\nPlatte County Unclassifiable/Attainment\nPolk County Unclassifiable/Attainment\nRed Willow County Unclassifiable/Attainment\nRichardson County Unclassifiable/Attainment\nRock County Unclassifiable/Attainment\nSaline County Unclassifiable/Attainment\nSarpy County Unclassifiable/Attainment\nSaunders County Unclassifiable/Attainment\nScotts Bluff County Unclassifiable/Attainment\nSeward County Unclassifiable/Attainment\nSheridan County Unclassifiable/Attainment\nSherman County Unclassifiable/Attainment\nSioux County Unclassifiable/Attainment\nStanton County Unclassifiable/Attainment\nThayer County Unclassifiable/Attainment\nThomas County Unclassifiable/Attainment\nThurston County Unclassifiable/Attainment\nValley County Unclassifiable/Attainment\nWashington County Unclassifiable/Attainment\nWayne County Unclassifiable/Attainment\nWebster County Unclassifiable/Attainment\nWheeler County Unclassifiable/Attainment\nYork County Unclassifiable/Attainment\n1 Includes areas of Indian country located in each county or area, except as otherwise specified.\n2 This date is April 15, 2015, unless otherwise noted.\nNebraska—1997 24-Hour PM2.5 NAAQS\n[Primary and Secondary]\nDesignated area Designation a Classification\nDate 1 Type Date Type\nStatewide:\nAdams County Unclassifiable/Attainment.\nAntelope County Unclassifiable/Attainment.\nArthur County Unclassifiable/Attainment.\nBanner County Unclassifiable/Attainment.\nBlaine County Unclassifiable/Attainment.\nBoone County Unclassifiable/Attainment.\nBox Butte County Unclassifiable/Attainment.\nBoyd County Unclassifiable/Attainment.\nBrown County Unclassifiable/Attainment.\nBuffalo County Unclassifiable/Attainment.\nBurt County Unclassifiable/Attainment.\nButler County Unclassifiable/Attainment.\nCass County Unclassifiable/Attainment.\nCedar County Unclassifiable/Attainment.\nChase County Unclassifiable/Attainment.\nCherry County Unclassifiable/Attainment.\nCheyenne County Unclassifiable/Attainment.\nClay County Unclassifiable/Attainment.\nColfax County Unclassifiable/Attainment.\nCuming County Unclassifiable/Attainment.\nCuster County Unclassifiable/Attainment.\nDakota County Unclassifiable/Attainment.\nDawes County Unclassifiable/Attainment.\nDawson County Unclassifiable/Attainment.\nDeuel County Unclassifiable/Attainment.\nDixon County Unclassifiable/Attainment.\nDodge County Unclassifiable/Attainment.\nDouglas County Unclassifiable/Attainment.\nDundy County Unclassifiable/Attainment.\nFillmore County Unclassifiable/Attainment.\nFranklin County Unclassifiable/Attainment.\nFrontier County Unclassifiable/Attainment.\nFurnas County Unclassifiable/Attainment.\nGage County Unclassifiable/Attainment.\nGarden County Unclassifiable/Attainment.\nGarfield County Unclassifiable/Attainment.\nGosper County Unclassifiable/Attainment.\nGrant County Unclassifiable/Attainment.\nGreeley County Unclassifiable/Attainment.\nHall County Unclassifiable/Attainment.\nHamilton County Unclassifiable/Attainment.\nHarlan County Unclassifiable/Attainment.\nHayes County Unclassifiable/Attainment.\nHitchcock County Unclassifiable/Attainment.\nHolt County Unclassifiable/Attainment.\nHooker County Unclassifiable/Attainment.\nHoward County Unclassifiable/Attainment.\nJefferson County Unclassifiable/Attainment.\nJohnson County Unclassifiable/Attainment.\nKearney County Unclassifiable/Attainment.\nKeith County Unclassifiable/Attainment.\nKeya Paha County Unclassifiable/Attainment.\nKimball County Unclassifiable/Attainment.\nKnox County Unclassifiable/Attainment.\nLancaster County Unclassifiable/Attainment.\nLincoln County Unclassifiable/Attainment.\nLogan County Unclassifiable/Attainment.\nLoup County Unclassifiable/Attainment.\nMcPherson County Unclassifiable/Attainment.\nMadison County Unclassifiable/Attainment.\nMerrick County Unclassifiable/Attainment.\nMorrill County Unclassifiable/Attainment.\nNance County Unclassifiable/Attainment.\nNemaha County Unclassifiable/Attainment.\nNuckolls County Unclassifiable/Attainment.\nOtoe County Unclassifiable/Attainment.\nPawnee County Unclassifiable/Attainment.\nPerkins County Unclassifiable/Attainment.\nPhelps County Unclassifiable/Attainment.\nPierce County Unclassifiable/Attainment.\nPlatte County Unclassifiable/Attainment.\nPolk County Unclassifiable/Attainment.\nRed Willow County Unclassifiable/Attainment.\nRichardson County Unclassifiable/Attainment.\nRock County Unclassifiable/Attainment.\nSaline County Unclassifiable/Attainment.\nSarpy County Unclassifiable/Attainment.\nSaunders County Unclassifiable/Attainment.\nScotts Bluff County Unclassifiable/Attainment.\nSeward County Unclassifiable/Attainment.\nSheridan County Unclassifiable/Attainment.\nSherman County Unclassifiable/Attainment.\nSioux County Unclassifiable/Attainment.\nStanton County Unclassifiable/Attainment.\nThayer County Unclassifiable/Attainment.\nThomas County Unclassifiable/Attainment.\nThurston County Unclassifiable/Attainment.\nValley County Unclassifiable/Attainment.\nWashington County Unclassifiable/Attainment.\nWayne County Unclassifiable/Attainment.\nWebster County Unclassifiable/Attainment.\nWheeler County Unclassifiable/Attainment.\nYork County Unclassifiable/Attainment.\na Includes Indian Country located in each county or area, except as otherwise specified.\n1 This date is 90 days after January 5, 2005, unless otherwise noted.\nNebraska—2006 24-Hour PM2.5 NAAQS\n[Primary and Secondary]\nDesignated area Designation a Classification\nDate 1 Type Date Type\nStatewide:\nAdams County Unclassifiable/Attainment.\nAntelope County Unclassifiable/Attainment.\nArthur County Unclassifiable/Attainment.\nBanner County Unclassifiable/Attainment.\nBlaine County Unclassifiable/Attainment.\nBoone County Unclassifiable/Attainment.\nBox Butte County Unclassifiable/Attainment.\nBoyd County Unclassifiable/Attainment.\nBrown County Unclassifiable/Attainment.\nBuffalo County Unclassifiable/Attainment.\nBurt County Unclassifiable/Attainment.\nButler County Unclassifiable/Attainment.\nCass County Unclassifiable/Attainment.\nCedar County Unclassifiable/Attainment.\nChase County Unclassifiable/Attainment.\nCherry County Unclassifiable/Attainment.\nCheyenne County Unclassifiable/Attainment.\nClay County Unclassifiable/Attainment.\nColfax County Unclassifiable/Attainment.\nCuming County Unclassifiable/Attainment.\nCuster County Unclassifiable/Attainment.\nDakota County Unclassifiable/Attainment.\nDawes County Unclassifiable/Attainment.\nDawson County Unclassifiable/Attainment.\nDeuel County Unclassifiable/Attainment.\nDixon County Unclassifiable/Attainment.\nDodge County Unclassifiable/Attainment.\nDouglas County Unclassifiable/Attainment.\nDundy County Unclassifiable/Attainment.\nFillmore County Unclassifiable/Attainment.\nFranklin County Unclassifiable/Attainment.\nFrontier County Unclassifiable/Attainment.\nFurnas County Unclassifiable/Attainment.\nGage County Unclassifiable/Attainment.\nGarden County Unclassifiable/Attainment.\nGarfield County Unclassifiable/Attainment.\nGosper County Unclassifiable/Attainment.\nGrant County Unclassifiable/Attainment.\nGreeley County Unclassifiable/Attainment.\nHall County Unclassifiable/Attainment.\nHamilton County Unclassifiable/Attainment.\nHarlan County Unclassifiable/Attainment.\nHayes County Unclassifiable/Attainment.\nHitchcock County Unclassifiable/Attainment.\nHolt County Unclassifiable/Attainment.\nHooker County Unclassifiable/Attainment.\nHoward County Unclassifiable/Attainment.\nJefferson County Unclassifiable/Attainment.\nJohnson County Unclassifiable/Attainment.\nKearney County Unclassifiable/Attainment.\nKeith County Unclassifiable/Attainment.\nKeya Paha County Unclassifiable/Attainment.\nKimball County Unclassifiable/Attainment.\nKnox County Unclassifiable/Attainment.\nLancaster County Unclassifiable/Attainment.\nLincoln County Unclassifiable/Attainment.\nLogan County Unclassifiable/Attainment.\nLoup County Unclassifiable/Attainment.\nMcPherson County Unclassifiable/Attainment.\nMadison County Unclassifiable/Attainment.\nMerrick County Unclassifiable/Attainment.\nMorrill County Unclassifiable/Attainment.\nNance County Unclassifiable/Attainment.\nNemaha County Unclassifiable/Attainment.\nNuckolls County Unclassifiable/Attainment.\nOtoe County Unclassifiable/Attainment.\nPawnee County Unclassifiable/Attainment.\nPerkins County Unclassifiable/Attainment.\nPhelps County Unclassifiable/Attainment.\nPierce County Unclassifiable/Attainment.\nPlatte County Unclassifiable/Attainment.\nPolk County Unclassifiable/Attainment.\nRed Willow County Unclassifiable/Attainment.\nRichardson County Unclassifiable/Attainment.\nRock County Unclassifiable/Attainment.\nSaline County Unclassifiable/Attainment.\nSarpy County Unclassifiable/Attainment.\nSaunders County Unclassifiable/Attainment.\nScotts Bluff County Unclassifiable/Attainment.\nSeward County Unclassifiable/Attainment.\nSheridan County Unclassifiable/Attainment.\nSherman County Unclassifiable/Attainment.\nSioux County Unclassifiable/Attainment.\nStanton County Unclassifiable/Attainment.\nThayer County Unclassifiable/Attainment.\nThomas County Unclassifiable/Attainment.\nThurston County Unclassifiable/Attainment.\nValley County Unclassifiable/Attainment.\nWashington County Unclassifiable/Attainment.\nWayne County Unclassifiable/Attainment.\nWebster County Unclassifiable/Attainment.\nWheeler County Unclassifiable/Attainment.\nYork County Unclassifiable/Attainment.\na Includes Indian Country located in each county or area, except as otherwise specified.\n1 This date is 30 days after November 13, 2009, unless otherwise noted.\nNebraska—NO2 (1971 Annual Standard)\nDesignated area Does not meet primary standards Cannot be classified or better than national standards\nEntire State X\nNebraska—NO2 (2010 1-Hour Standard)\nDesignated area Designation a\nDate 1 Type\nAdams County Unclassifiable/Attainment.\nAntelope County Unclassifiable/Attainment.\nArthur County Unclassifiable/Attainment.\nBanner County Unclassifiable/Attainment.\nBlaine County Unclassifiable/Attainment.\nBoone County Unclassifiable/Attainment.\nBox Butte County Unclassifiable/Attainment.\nBoyd County Unclassifiable/Attainment.\nBrown County Unclassifiable/Attainment.\nBuffalo County Unclassifiable/Attainment.\nBurt County Unclassifiable/Attainment.\nButler County Unclassifiable/Attainment.\nCass County Unclassifiable/Attainment.\nCedar County Unclassifiable/Attainment.\nChase County Unclassifiable/Attainment.\nCherry County Unclassifiable/Attainment.\nCheyenne County Unclassifiable/Attainment.\nClay County Unclassifiable/Attainment.\nColfax County Unclassifiable/Attainment.\nCuming County Unclassifiable/Attainment.\nCuster County Unclassifiable/Attainment.\nDakota County Unclassifiable/Attainment.\nDawes County Unclassifiable/Attainment.\nDawson County Unclassifiable/Attainment.\nDeuel County Unclassifiable/Attainment.\nDixon County Unclassifiable/Attainment.\nDodge County Unclassifiable/Attainment.\nDouglas County Unclassifiable/Attainment.\nDundy County Unclassifiable/Attainment.\nFillmore County Unclassifiable/Attainment.\nFranklin County Unclassifiable/Attainment.\nFrontier County Unclassifiable/Attainment.\nFurnas County Unclassifiable/Attainment.\nGage County Unclassifiable/Attainment.\nGarden County Unclassifiable/Attainment.\nGarfield County Unclassifiable/Attainment.\nGosper County Unclassifiable/Attainment.\nGrant County Unclassifiable/Attainment.\nGreeley County Unclassifiable/Attainment.\nHall County Unclassifiable/Attainment.\nHamilton County Unclassifiable/Attainment.\nHarlan County Unclassifiable/Attainment.\nHayes County Unclassifiable/Attainment.\nHitchcock County Unclassifiable/Attainment.\nHolt County Unclassifiable/Attainment.\nHooker County Unclassifiable/Attainment.\nHoward County Unclassifiable/Attainment.\nJefferson County Unclassifiable/Attainment.\nJohnson County Unclassifiable/Attainment.\nKearney County Unclassifiable/Attainment.\nKeith County Unclassifiable/Attainment.\nKeya Paha County Unclassifiable/Attainment.\nKimball County Unclassifiable/Attainment.\nKnox County Unclassifiable/Attainment.\nLancaster County Unclassifiable/Attainment.\nLincoln County Unclassifiable/Attainment.\nLogan County Unclassifiable/Attainment.\nLoup County Unclassifiable/Attainment.\nMcPherson County Unclassifiable/Attainment.\nMadison County Unclassifiable/Attainment.\nMerrick County Unclassifiable/Attainment.\nMorrill County Unclassifiable/Attainment.\nNance County Unclassifiable/Attainment.\nNemaha County Unclassifiable/Attainment.\nNuckolls County Unclassifiable/Attainment.\nOtoe County Unclassifiable/Attainment.\nPawnee County Unclassifiable/Attainment.\nPerkins County Unclassifiable/Attainment.\nPhelps County Unclassifiable/Attainment.\nPierce County Unclassifiable/Attainment.\nPlatte County Unclassifiable/Attainment.\nPolk County Unclassifiable/Attainment.\nRed Willow County Unclassifiable/Attainment.\nRichardson County Unclassifiable/Attainment.\nRock County Unclassifiable/Attainment.\nSaline County Unclassifiable/Attainment.\nSarpy County Unclassifiable/Attainment.\nSaunders County Unclassifiable/Attainment.\nScotts Bluff County Unclassifiable/Attainment.\nSeward County Unclassifiable/Attainment.\nSheridan County Unclassifiable/Attainment.\nSherman County Unclassifiable/Attainment.\nSioux County Unclassifiable/Attainment.\nStanton County Unclassifiable/Attainment.\nThayer County Unclassifiable/Attainment.\nThomas County Unclassifiable/Attainment.\nThurston County Unclassifiable/Attainment.\nValley County Unclassifiable/Attainment.\nWashington County Unclassifiable/Attainment.\nWayne County Unclassifiable/Attainment.\nWebster County Unclassifiable/Attainment.\nWheeler County Unclassifiable/Attainment.\nYork County Unclassifiable/Attainment.\na Includes Indian Country located in each county or area, except as otherwise specified.\n1 This date is 90 days after October 31, 2011, unless otherwise noted.\nNebraska—1997 8-Hour Ozone NAAQS\n[Primary and Secondary]\nDesignated area Designation a Category/classification\nDate 1 Type Date 1 Type\nStatewide: Unclassifiable/Attainment\nAdams County\nAntelope County\nArthur County\nBanner County\nBlaine County\nBoone County\nBox Butte County\nBoyd County\nBrown County\nBuffalo County\nBurt County\nButler County\nCass County\nCedar County\nChase County\nCherry County\nCheyenne County\nClay County\nColfax County\nCuming County\nCuster County\nDakota County\nDawes County\nDawson County\nDeuel County\nDixon County\nDodge County\nDouglas County\nDundy County\nFillmore County\nFranklin County\nFrontier County\nFurnas County\nGage County\nGarden County\nGarfield County\nGosper County\nGrant County\nGreeley County\nHall County\nHamilton County\nHarlan County\nHayes County\nHitchcock County\nHolt County\nHooker County\nHoward County\nJefferson County\nJohnson County\nKearney County\nKeith County\nKeya Paha County\nKimball County\nKnox County\nLancaster County\nLincoln County\nLogan County\nLoup County\nMadison County\nMcPherson County\nMerrick County\nMorrill County\nNance County\nNemaha County\nNuckolls County\nOtoe County\nPawnee County\nPerkins County\nPhelps County\nPierce County\nPlatte County\nPolk County\nRed Willow County\nRichardson County\nRock County\nSaline County\nSarpy County\nSaunders County\nScotts Bluff County\nSeward County\nSheridan County\nSherman County\nSioux County\nStanton County\nThayer County\nThomas County\nThurston County\nValley County\nWashington County\nWayne County\nWebster County\nWheeler County\nYork County\na Includes Indian Country located in each county or area, except as otherwise specified.\n1 This date is June 15, 2004, unless otherwise noted.\nNebraska—2008 8-Hour Ozone NAAQS\n[Primary and Secondary]\nDesignated area Designation Classification\nDate 1 Type Date 1 Type\nStatewide: 2 Unclassifiable/Attainment\nAdams County\nAntelope County\nArthur County\nBanner County\nBlaine County\nBoone County\nBox Butte County\nBoyd County\nBrown County\nBuffalo County\nBurt County\nButler County\nCass County\nCedar County\nChase County\nCherry County\nCheyenne County\nClay County\nColfax County\nCuming County\nCuster County\nDakota County\nDawes County\nDawson County\nDeuel County\nDixon County\nDodge County\nDouglas County\nDundy County\nFillmore County\nFranklin County\nFrontier County\nFurnas County\nGage County\nGarden County\nGarfield County\nGosper County\nGrant County\nGreeley County\nHall County\nHamilton County\nHarlan County\nHayes County\nHitchcock County\nHolt County\nHooker County\nHoward County\nJefferson County\nJohnson County\nKearney County\nKeith County\nKeya Paha County\nKimball County\nKnox County\nLancaster County\nLincoln County\nLogan County\nLoup County\nMcPherson County\nMadison County\nMerrick County\nMorrill County\nNance County\nNemaha County\nNuckolls County\nOtoe County\nPawnee County\nPerkins County\nPhelps County\nPierce County\nPlatte County\nPolk County\nRed Willow County\nRichardson County\nRock County\nSaline County\nSarpy County\nSaunders County\nScotts Bluff County\nSeward County\nSheridan County\nSherman County\nSioux County\nStanton County\nThayer County\nThomas County\nThurston County\nValley County\nWashington County\nWayne County\nWebster County\nWheeler County\nYork County\n1 This date is July 20, 2012, unless otherwise noted.\n2 Includes any Indian country in each county or area, unless otherwise specified.\nNebraska—2015 8-Hour Ozone NAAQS\n[Primary and Secondary]\nDesignated area 1 Designation Classification\nDate 2 Type Date Type\nStatewide Attainment/Unclassifiable\nAdams County\nAntelope County\nArthur County\nBanner County\nBlaine County\nBoone County\nBox Butte County\nBoyd County\nBrown County\nBuffalo County\nBurt County\nButler County\nCass County\nCedar County\nChase County\nCherry County\nCheyenne County\nClay County\nColfax County\nCuming County\nCuster County\nDakota County\nDawes County\nDawson County\nDeuel County\nDixon County\nDodge County\nDouglas County\nDundy County\nFillmore County\nFranklin County\nFrontier County\nFurnas County\nGage County\nGarden County\nGarfield County\nGosper County\nGrant County\nGreeley County\nHall County\nHamilton County\nHarlan County\nHayes County\nHitchcock County\nHolt County\nHooker County\nHoward County\nJefferson County\nJohnson County\nKearney County\nKeith County\nKeya Paha County\nKimball County\nKnox County\nLancaster County\nLincoln County\nLogan County\nLoup County\nMcPherson County\nMadison County\nMerrick County\nMorrill County\nNance County\nNemaha County\nNuckolls County\nOtoe County\nPawnee County\nPerkins County\nPhelps County\nPierce County\nPlatte County\nPolk County\nRed Willow County\nRichardson County\nRock County\nSaline County\nSarpy County\nSaunders County\nScotts Bluff County\nSeward County\nSheridan County\nSherman County\nSioux County\nStanton County\nThayer County\nThomas County\nThurston County\nValley County\nWashington County\nWayne County\nWebster County\nWheeler County\nYork County\n1 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.\n2 This date is January 16, 2018, unless otherwise noted.\nNebraska—2008 Lead NAAQS\nDesignated area Designation for the 2008 NAAQS a\nDate 1 Type\nWhole State Unclassifiable/Attainment.\na Includes Indian Country located in each county or area, except as otherwise specified.\n1 December 31, 2011 unless otherwise noted.","path":["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"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-40.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:26:04Z","sha256":"c1e0a24ee8fff5fa466f824157e95553c378eaaf0437bafe581d48b6c7d74fa9","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-81.327","next":"us/40-cfr-81.329"},"notice":"GroundRules: Original legal text. Not legal advice."}