{"data":{"id":"us/40-cfr-81.342","jurisdiction":"us","citation":"40 CFR 81.342","heading":"South Dakota.","body":"South Dakota—1971 Sulfur Dioxide NAAQS\n[Primary and Secondary]\nDesignated Does not meet primary standards Does not meet secondary standards Cannot be classified Better than national standards\nEntire State X\nSouth Dakota—2010 Sulfur Dioxide NAAQS\n[Primary]\nDesignated area 1 Designation\nDate 2 Type\nStatewide: Attainment/Unclassifiable.\nAurora County\nBeadle County\nBennett County\nBon Homme County\nBrookings County\nBrown County\nBrule County\nBuffalo County\nButte County\nCampbell County\nCharles Mix County\nClark County\nClay County\nCodington County\nCorson County\nCuster County\nDavison County\nDay County\nDeuel County\nDewey County\nDouglas County\nEdmunds County\nFall River County\nFaulk County\nGrant County 9/12/2016 Attainment/Unclassifiable.\nGregory County\nHaakon County\nHamlin County\nHand County\nHanson County\nHarding County\nHughes County\nHutchinson County\nHyde County\nJackson County\nJerauld County\nJones County\nKingsbury County\nLake County\nLawrence County\nLincoln County\nLyman County\nMcCook County\nMcPherson County\nMarshall County\nMeade County\nMellette County\nMiner County\nMinnehaha County\nMoody County\nOglala Lakota County\nPennington County\nPerkins County\nPotter County\nRoberts County\nSanborn County\nSpink County\nStanley County\nSully County\nTodd County\nTripp County\nTurner County\nUnion County\nWalworth County\nYankton County\nZiebach 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.\nSouth Dakota—Carbon Monoxide\nDesignated Area Designation Classification\nDate 1 Type Date 1 Type\nStatewide Unclassifiable/Attainment\nAurora County\nBeadle County\nBennett County\nBon Homme County\nBrookings County\nBrown County\nBrule County\nBuffalo County\nButte County\nCampbell County\nCharles Mix County\nClark County\nClay County\nCodington County\nCorson County\nCuster County\nDavison County\nDay County\nDeuel County\nDewey County\nDouglas County\nEdmunds County\nFall River County\nFaulk County\nGrant County\nGregory County\nHaakon County\nHamlin County\nHand County\nHanson County\nHarding County\nHughes County\nHutchinson County\nHyde County\nJackson County\nJerauld County\nJones County\nKingsbury County\nLake County\nLawrence County\nLincoln County\nLyman County\nMarshall County\nMcCook County\nMcPherson County\nMeade County\nMellette County\nMiner County\nMinnehaha County\nMoody County\nPennington County\nPerkins County\nPotter County\nRoberts County\nSanborn County\nShannon County\nSpink County\nStanley County\nSully County\nTodd County\nTripp County\nTurner County\nUnion County\nWalworth County\nYankton County\nZiebach County\n1 This date is November 15, 1990, unless otherwise noted.\nSouth Dakota—Ozone (1-Hour Standard) 2\nDesignated area Designation Classification\nDate 1 Type Date 1 Type\nStatewide Unclassifiable/Attainment\nAurora County\nBeadle County\nBennett County\nBon Homme County\nBrookings County\nBrown County\nBrule County\nBuffalo County\nButte County\nCampbell County\nCharles Mix County\nClark County\nClay County\nCodington County\nCorson County\nCuster County\nDavison County\nDay County\nDeuel County\nDewey County\nDouglas County\nEdmunds County\nFall River County\nFaulk County\nGrant County\nGregory County\nHaakon County\nHamlin County\nHand County\nHanson County\nHarding County\nHughes County\nHutchinson County\nHyde County\nJackson County\nJerauld County\nJones County\nKingsbury County\nLake County\nLawrence County\nLincoln County\nLyman County\nMarshall County\nMcCook County\nMcPherson County\nMeade County\nMellette County\nMiner County\nMinnehaha County\nMoody County\nPennington County\nPerkins County\nPotter County\nRoberts County\nSanborn County\nShannon County\nSpink County\nStanley County\nSully County\nTodd County\nTripp County\nTurner County\nUnion County\nWalworth County\nYankton County\nZiebach 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 South Dakota.\nSouth Dakota—PM-10\nDesignated area Designation Classification\nDate Type Date Type\nRapid City Area 04/05/2006 Attainment\nRest of State1 11/15/1990 Unclassifiable\n1 Denotes a single area designation for PSD baseline area purposes.\nSouth Dakota—1997 Annual PM2.5 NAAQS\n[Primary and Secondary]\nDesignated area Designation a Classification\nDate 1 Type Date Type\nStatewide:\nAurora County Unclassifiable/Attainment.\nBeadle County Unclassifiable/Attainment.\nBennett County Unclassifiable/Attainment.\nBon Homme County Unclassifiable/Attainment.\nBrookings County Unclassifiable/Attainment.\nBrown County Unclassifiable/Attainment.\nBrule County Unclassifiable/Attainment.\nBuffalo County Unclassifiable/Attainment.\nButte County Unclassifiable/Attainment.\nCampbell County Unclassifiable/Attainment.\nCharles Mix County Unclassifiable/Attainment.\nClark County Unclassifiable/Attainment.\nClay County Unclassifiable/Attainment.\nCodington County Unclassifiable/Attainment.\nCorson County Unclassifiable/Attainment.\nCuster County Unclassifiable/Attainment.\nDavison County Unclassifiable/Attainment.\nDay County Unclassifiable/Attainment.\nDeuel County Unclassifiable/Attainment.\nDewey County Unclassifiable/Attainment.\nDouglas County Unclassifiable/Attainment.\nEdmunds County Unclassifiable/Attainment.\nFall River County Unclassifiable/Attainment.\nFaulk County Unclassifiable/Attainment.\nGrant County Unclassifiable/Attainment.\nGregory County Unclassifiable/Attainment.\nHaakon County Unclassifiable/Attainment.\nHamlin County Unclassifiable/Attainment.\nHand County Unclassifiable/Attainment.\nHanson County Unclassifiable/Attainment.\nHarding County Unclassifiable/Attainment.\nHughes County Unclassifiable/Attainment.\nHutchinson County Unclassifiable/Attainment.\nHyde County Unclassifiable/Attainment.\nJackson County Unclassifiable/Attainment.\nJerauld County Unclassifiable/Attainment.\nJones County Unclassifiable/Attainment.\nKingsbury County Unclassifiable/Attainment.\nLake County Unclassifiable/Attainment.\nLawrence County Unclassifiable/Attainment.\nLincoln County Unclassifiable/Attainment.\nLyman County Unclassifiable/Attainment.\nMcCook County Unclassifiable/Attainment.\nMcPherson County Unclassifiable/Attainment.\nMarshall County Unclassifiable/Attainment.\nMeade County Unclassifiable/Attainment.\nMellette County Unclassifiable/Attainment.\nMiner County Unclassifiable/Attainment.\nMinnehaha County Unclassifiable/Attainment.\nMoody County Unclassifiable/Attainment.\nPennington County Unclassifiable/Attainment.\nPerkins County Unclassifiable/Attainment.\nPotter County Unclassifiable/Attainment.\nRoberts County Unclassifiable/Attainment.\nSanborn County Unclassifiable/Attainment.\nShannon County Unclassifiable/Attainment.\nSpink County Unclassifiable/Attainment.\nStanley County Unclassifiable/Attainment.\nSully Count Unclassifiable/Attainment.\nTodd County Unclassifiable/Attainment.\nTripp County Unclassifiable/Attainment.\nTurner County Unclassifiable/Attainment.\nUnion County Unclassifiable/Attainment.\nWalworth County Unclassifiable/Attainment.\nYankton County Unclassifiable/Attainment.\nZiebach 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.\nSouth Dakota—2012 Annual PM2.5 NAAQS\n[Primary]\nDesignated area 1 Designation Classification\nDate 2 Type Date 2 Type\nStatewide:\nAurora County Unclassifiable/Attainment\nBeadle County Unclassifiable/Attainment\nBennett County Unclassifiable/Attainment\nBon Homme County Unclassifiable/Attainment\nBrookings County Unclassifiable/Attainment\nBrown County Unclassifiable/Attainment\nBrule County Unclassifiable/Attainment\nBuffalo County Unclassifiable/Attainment\nButte County Unclassifiable/Attainment\nCampbell County Unclassifiable/Attainment\nCharles Mix County Unclassifiable/Attainment\nClark County Unclassifiable/Attainment\nClay County Unclassifiable/Attainment\nCodington County Unclassifiable/Attainment\nCorson County Unclassifiable/Attainment\nCuster County Unclassifiable/Attainment\nDavison County Unclassifiable/Attainment\nDay County Unclassifiable/Attainment\nDeuel County Unclassifiable/Attainment\nDewey County Unclassifiable/Attainment\nDouglas County Unclassifiable/Attainment\nEdmunds County Unclassifiable/Attainment\nFall River County Unclassifiable/Attainment\nFaulk County Unclassifiable/Attainment\nGrant County Unclassifiable/Attainment\nGregory County Unclassifiable/Attainment\nHaakon County Unclassifiable/Attainment\nHamlin County Unclassifiable/Attainment\nHand County Unclassifiable/Attainment\nHanson County Unclassifiable/Attainment\nHarding County Unclassifiable/Attainment\nHughes County Unclassifiable/Attainment\nHutchinson County Unclassifiable/Attainment\nHyde County Unclassifiable/Attainment\nJackson County Unclassifiable/Attainment\nJerauld County Unclassifiable/Attainment\nJones County Unclassifiable/Attainment\nKingsbury County Unclassifiable/Attainment\nLake County Unclassifiable/Attainment\nLawrence County Unclassifiable/Attainment\nLincoln County Unclassifiable/Attainment\nLyman County Unclassifiable/Attainment\nMcCook County Unclassifiable/Attainment\nMcPherson County Unclassifiable/Attainment\nMarshall County Unclassifiable/Attainment\nMeade County Unclassifiable/Attainment\nMellette County Unclassifiable/Attainment\nMiner County Unclassifiable/Attainment\nMinnehaha County Unclassifiable/Attainment\nMoody County Unclassifiable/Attainment\nPennington County Unclassifiable/Attainment\nPerkins County Unclassifiable/Attainment\nPotter County Unclassifiable/Attainment\nRoberts County Unclassifiable/Attainment\nSanborn County Unclassifiable/Attainment\nShannon County Unclassifiable/Attainment\nSpink County Unclassifiable/Attainment\nStanley County Unclassifiable/Attainment\nSully Count Unclassifiable/Attainment\nTodd County Unclassifiable/Attainment\nTripp County Unclassifiable/Attainment\nTurner County Unclassifiable/Attainment\nUnion County Unclassifiable/Attainment\nWalworth County Unclassifiable/Attainment\nYankton County Unclassifiable/Attainment\nZiebach 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.\nSouth Dakota—1997 24-Hour PM2.5 NAAQS\n[Primary and Secondary]\nDesignated area Designation a Classification\nDate 1 Type Date Type\nStatewide:\nAurora County Unclassifiable/Attainment.\nBeadle County Unclassifiable/Attainment.\nBennett County Unclassifiable/Attainment.\nBon Homme County Unclassifiable/Attainment.\nBrookings County Unclassifiable/Attainment.\nBrown County Unclassifiable/Attainment.\nBrule County Unclassifiable/Attainment.\nBuffalo County Unclassifiable/Attainment.\nButte County Unclassifiable/Attainment.\nCampbell County Unclassifiable/Attainment.\nCharles Mix County Unclassifiable/Attainment.\nClark County Unclassifiable/Attainment.\nClay County Unclassifiable/Attainment.\nCodington County Unclassifiable/Attainment.\nCroson County Unclassifiable/Attainment.\nCuster County Unclassifiable/Attainment.\nDavison County Unclassifiable/Attainment.\nDay County Unclassifiable/Attainment.\nDeuel County Unclassifiable/Attainment.\nDewey County Unclassifiable/Attainment.\nDouglas County Unclassifiable/Attainment.\nEdmunds County Unclassifiable/Attainment.\nFall River County Unclassifiable/Attainment.\nFaulk County Unclassifiable/Attainment.\nGrant County Unclassifiable/Attainment.\nGregory County Unclassifiable/Attainment.\nHaakon County Unclassifiable/Attainment.\nHamlin County Unclassifiable/Attainment.\nHand County Unclassifiable/Attainment.\nHanson County Unclassifiable/Attainment.\nHarding County Unclassifiable/Attainment.\nHughes County Unclassifiable/Attainment.\nHutchinson County Unclassifiable/Attainment.\nHyde County Unclassifiable/Attainment.\nJackson County Unclassifiable/Attainment.\nJerauld County Unclassifiable/Attainment.\nJones County Unclassifiable/Attainment.\nKingsbury County Unclassifiable/Attainment.\nLake County Unclassifiable/Attainment.\nLawrence County Unclassifiable/Attainment.\nLincoln County Unclassifiable/Attainment.\nLyman County Unclassifiable/Attainment.\nMcCook County Unclassifiable/Attainment.\nMcPherson County Unclassifiable/Attainment.\nMarshall County Unclassifiable/Attainment.\nMeade County Unclassifiable/Attainment.\nMellette County Unclassifiable/Attainment.\nMiner County Unclassifiable/Attainment.\nMinnehaha County Unclassifiable/Attainment.\nMoody County Unclassifiable/Attainment.\nPennington County Unclassifiable/Attainment.\nPerkins County Unclassifiable/Attainment.\nPotter County Unclassifiable/Attainment.\nRoberts County Unclassifiable/Attainment.\nSanborn County Unclassifiable/Attainment.\nShannon County Unclassifiable/Attainment.\nSpink County Unclassifiable/Attainment.\nStanley County Unclassifiable/Attainment.\nSully County Unclassifiable/Attainment.\nTodd County Unclassifiable/Attainment.\nTripp County Unclassifiable/Attainment.\nTurner County Unclassifiable/Attainment.\nUnion County Unclassifiable/Attainment.\nWalworth County Unclassifiable/Attainment.\nYankton County Unclassifiable/Attainment.\nZiebach 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.\nSouth Dakota—2006 24-Hour PM2.5 NAAQS\n[Primary and Secondary]\nDesignated area Designation a Classification\nDate 1 Type Date Type\nStatewide:\nAurora County Unclassifiable/Attainment.\nBeadle County Unclassifiable/Attainment.\nBennett County Unclassifiable/Attainment.\nBon Homme County Unclassifiable/Attainment.\nBrookings County Unclassifiable/Attainment.\nBrown County Unclassifiable/Attainment.\nBrule County Unclassifiable/Attainment.\nBuffalo County Unclassifiable/Attainment.\nButte County Unclassifiable/Attainment.\nCampbell County Unclassifiable/Attainment.\nCharles Mix County Unclassifiable/Attainment.\nClark County Unclassifiable/Attainment.\nClay County Unclassifiable/Attainment.\nCodington County Unclassifiable/Attainment.\nCroson County Unclassifiable/Attainment.\nCuster County Unclassifiable/Attainment.\nDavison County Unclassifiable/Attainment.\nDay County Unclassifiable/Attainment.\nDeuel County Unclassifiable/Attainment.\nDewey County Unclassifiable/Attainment.\nDouglas County Unclassifiable/Attainment.\nEdmunds County Unclassifiable/Attainment.\nFall River County Unclassifiable/Attainment.\nFaulk County Unclassifiable/Attainment.\nGrant County Unclassifiable/Attainment.\nGregory County Unclassifiable/Attainment.\nHaakon County Unclassifiable/Attainment.\nHamlin County Unclassifiable/Attainment.\nHand County Unclassifiable/Attainment.\nHanson County Unclassifiable/Attainment.\nHarding County Unclassifiable/Attainment.\nHughes County Unclassifiable/Attainment.\nHutchinson County Unclassifiable/Attainment.\nHyde County Unclassifiable/Attainment.\nJackson County Unclassifiable/Attainment.\nJerauld County Unclassifiable/Attainment.\nJones County Unclassifiable/Attainment.\nKingsbury County Unclassifiable/Attainment.\nLake County Unclassifiable/Attainment.\nLawrence County Unclassifiable/Attainment.\nLincoln County Unclassifiable/Attainment.\nLyman County Unclassifiable/Attainment.\nMcCook County Unclassifiable/Attainment.\nMcPherson County Unclassifiable/Attainment.\nMarshall County Unclassifiable/Attainment.\nMeade County Unclassifiable/Attainment.\nMellette County Unclassifiable/Attainment.\nMiner County Unclassifiable/Attainment.\nMinnehaha County Unclassifiable/Attainment.\nMoody County Unclassifiable/Attainment.\nPennington County Unclassifiable/Attainment.\nPerkins County Unclassifiable/Attainment.\nPotter County Unclassifiable/Attainment.\nRoberts County Unclassifiable/Attainment.\nSanborn County Unclassifiable/Attainment.\nShannon County Unclassifiable/Attainment.\nSpink County Unclassifiable/Attainment.\nStanley County Unclassifiable/Attainment.\nSully County Unclassifiable/Attainment.\nTodd County Unclassifiable/Attainment.\nTripp County Unclassifiable/Attainment.\nTurner County Unclassifiable/Attainment.\nUnion County Unclassifiable/Attainment.\nWalworth County Unclassifiable/Attainment.\nYankton County Unclassifiable/Attainment.\nZiebach 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.\nSouth Dakota—NO2 (1971 Annual Standard)\nDesignated area Does not meet primary standards Cannot be classified or better than national standards\nEntire State X\nSouth Dakota—NO2 (2010 1-Hour Standard)\nDesignated area Designation a\nDate 1 Type\nAurora County Unclassifiable/Attainment.\nBeadle County Unclassifiable/Attainment.\nBennett County Unclassifiable/Attainment.\nBon Homme County Unclassifiable/Attainment.\nBrookings County Unclassifiable/Attainment.\nBrown County Unclassifiable/Attainment.\nBrule County Unclassifiable/Attainment.\nBuffalo County Unclassifiable/Attainment.\nButte County Unclassifiable/Attainment.\nCampbell County Unclassifiable/Attainment.\nCharles Mix County Unclassifiable/Attainment.\nClark County Unclassifiable/Attainment.\nClay County Unclassifiable/Attainment.\nCodington County Unclassifiable/Attainment.\nCorson County Unclassifiable/Attainment.\nCuster County Unclassifiable/Attainment.\nDavison County Unclassifiable/Attainment.\nDay County Unclassifiable/Attainment.\nDeuel County Unclassifiable/Attainment.\nDewey County Unclassifiable/Attainment.\nDouglas County Unclassifiable/Attainment.\nEdmunds County Unclassifiable/Attainment.\nFall River County Unclassifiable/Attainment.\nFaulk County Unclassifiable/Attainment.\nGrant County Unclassifiable/Attainment.\nGregory County Unclassifiable/Attainment.\nHaakon County Unclassifiable/Attainment.\nHamlin County Unclassifiable/Attainment.\nHand County Unclassifiable/Attainment.\nHanson County Unclassifiable/Attainment.\nHarding County Unclassifiable/Attainment.\nHughes County Unclassifiable/Attainment.\nHutchinson County Unclassifiable/Attainment.\nHyde County Unclassifiable/Attainment.\nJackson County Unclassifiable/Attainment.\nJerauld County Unclassifiable/Attainment.\nJones County Unclassifiable/Attainment.\nKingsbury County Unclassifiable/Attainment.\nLake County Unclassifiable/Attainment.\nLawrence County Unclassifiable/Attainment.\nLincoln County Unclassifiable/Attainment.\nLyman County Unclassifiable/Attainment.\nMcCook County Unclassifiable/Attainment.\nMcPherson County Unclassifiable/Attainment.\nMarshall County Unclassifiable/Attainment.\nMeade County Unclassifiable/Attainment.\nMellette County Unclassifiable/Attainment.\nMiner County Unclassifiable/Attainment.\nMinnehaha County Unclassifiable/Attainment.\nMoody County Unclassifiable/Attainment.\nPennington County Unclassifiable/Attainment.\nPerkins County Unclassifiable/Attainment.\nPotter County Unclassifiable/Attainment.\nRoberts County Unclassifiable/Attainment.\nSanborn County Unclassifiable/Attainment.\nShannon County Unclassifiable/Attainment.\nSpink County Unclassifiable/Attainment.\nStanley County Unclassifiable/Attainment.\nSully County Unclassifiable/Attainment.\nTodd County Unclassifiable/Attainment.\nTripp County Unclassifiable/Attainment.\nTurner County Unclassifiable/Attainment.\nUnion County Unclassifiable/Attainment.\nWalworth County Unclassifiable/Attainment.\nYankton County Unclassifiable/Attainment.\nZiebach 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.\nSouth Dakota—1997 8-Hour Ozone NAAQS\n[Primary and Secondary]\nDesignated area Designation a Category/classification\nDate 1 Type Date 1 Type\nStatewide Unclassifiable/Attainment\nAurora County Unclassifiable/Attainment\nBeadle County Unclassifiable/Attainment\nBennett County Unclassifiable/Attainment\nBon Homme County Unclassifiable/Attainment\nBrookings County Unclassifiable/Attainment\nBrown County Unclassifiable/Attainment\nBrule County Unclassifiable/Attainment\nBuffalo County Unclassifiable/Attainment\nButte County Unclassifiable/Attainment\nCampbell County Unclassifiable/Attainment\nCharles Mix County Unclassifiable/Attainment\nClark County Unclassifiable/Attainment\nClay County Unclassifiable/Attainment\nCodington County Unclassifiable/Attainment\nCorson County Unclassifiable/Attainment\nCuster County Unclassifiable/Attainment\nDavison County Unclassifiable/Attainment\nDay County Unclassifiable/Attainment\nDeuel County Unclassifiable/Attainment\nDewey County Unclassifiable/Attainment\nDouglas County Unclassifiable/Attainment\nEdmunds County Unclassifiable/Attainment\nFall River County Unclassifiable/Attainment\nFaulk County Unclassifiable/Attainment\nGrant County Unclassifiable/Attainment\nGregory County Unclassifiable/Attainment\nHaakon County Unclassifiable/Attainment\nHamlin County Unclassifiable/Attainment\nHand County Unclassifiable/Attainment\nHanson County Unclassifiable/Attainment\nHarding County Unclassifiable/Attainment\nHughes County Unclassifiable/Attainment\nHutchinson County Unclassifiable/Attainment\nHyde County Unclassifiable/Attainment\nJackson County Unclassifiable/Attainment\nJerauld County Unclassifiable/Attainment\nJones County Unclassifiable/Attainment\nKingsbury County Unclassifiable/Attainment\nLake County Unclassifiable/Attainment\nLawrence County Unclassifiable/Attainment\nLincoln County Unclassifiable/Attainment\nLyman County Unclassifiable/Attainment\nMarshall County Unclassifiable/Attainment\nMcCook County Unclassifiable/Attainment\nMcPherson County Unclassifiable/Attainment\nMeade County Unclassifiable/Attainment\nMellette County Unclassifiable/Attainment\nMiner County Unclassifiable/Attainment\nMinnehaha County Unclassifiable/Attainment\nMoody County Unclassifiable/Attainment\nPennington County Unclassifiable/Attainment\nPerkins County Unclassifiable/Attainment\nPotter County Unclassifiable/Attainment\nRoberts County Unclassifiable/Attainment\nSanborn County Unclassifiable/Attainment\nShannon County Unclassifiable/Attainment\nSpink County Unclassifiable/Attainment\nStanley County Unclassifiable/Attainment\nSully County Unclassifiable/Attainment\nTodd County Unclassifiable/Attainment\nTripp County Unclassifiable/Attainment\nTurner County Unclassifiable/Attainment\nUnion County Unclassifiable/Attainment\nWalworth County Unclassifiable/Attainment\nYankton County Unclassifiable/Attainment\nZiebach County Unclassifiable/Attainment\na Includes Indian Country located in each county or area, except as otherwise specified.\n1 This date is June 15, 2004, unless otherwise noted.\nSouth Dakota—2008 8-Hour Ozone NAAQS\n[Primary and Secondary]\nDesignated area Designation Classification\nDate 1 Type Date 1 Type\nStatewide and Any Areas of Indian Country: Unclassifiable/Attainment\n1 This date is July 20, 2012, unless otherwise noted.\nSouth Dakota—2015 8-Hour Ozone NAAQS\n[Primary and Secondary]\nDesignated area 1 Designation Classification\nDate 2 Type Date Type\nStatewide Attainment/Unclassifiable\nAurora County\nBeadle County\nBennett County\nBon Homme County\nBrookings County\nBrown County\nBrule County\nBuffalo County\nCampbell County\nCharles Mix County\nClark County\nClay County\nCodington County\nCorson County\nCuster County\nDavison County\nDay County\nDeuel County\nDewey County\nDouglas County\nEdmunds County\nFall River County\nFaulk County\nGrant County\nGregory County\nHaakon County\nHamlin County\nHand County\nHanson County\nHarding County\nHughes County\nHutchinson County\nHyde County\nJackson County\nJerauld County\nJones County\nKingsbury County\nLake County\nLawrence County\nLincoln County\nLyman County\nMcCook County\nMcPherson County\nMarshall County\nMeade County\nMellette County\nMiner County\nMinnehaha County\nMoody County\nOglala Lakota County\nPennington County\nPerkins County\nPotter County\nRoberts County\nSanborn County\nSpink County\nStanley County\nSully County\nTodd County\nTripp County\nTurner County\nUnion County\nWalworth County\nYankton County\nZiebach 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.\nSouth Dakota—2008 Lead NAAQS\nDesignated area Designation for the 2008 NAAQSa\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":"ff02393c7421b43e4d195c3d6a04bda8398f81a70b4fc534cb28bb2cdaf35a1c","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-81.341","next":"us/40-cfr-81.343"},"notice":"GroundRules: Original legal text. Not legal advice."}