1. Regulations
  2. title 40
  3. chapter I-i19
  4. part 81
  5. subpart C
  6. § 81.325

View all text of Subpart C [§ 81.300 - § 81.356]

§ 81.325 - Mississippi.

Mississippi—TSP

Designated area Does not meet primary standards Does not meet secondary standards Cannot be classified Better than national standards Adams CountyX Alcorn CountyX Amite CountyX Attala CountyX Benton CountyX Bolivar CountyX Calhoun CountyX Carroll CountyX Chickasaw CountyX Choctaw CountyX Clairborne CountyX Clarke CountyX Clay CountyX Coahoma CountyX Copiah CountyX Covington CountyX DeSoto CountyX Forrest CountyX Franklin CountyX George CountyX Greene CountyX Grenada CountyX Hancock CountyX Harrison CountyX Hinds CountyX Holmes CountyX Humphreys CountyX Issaquena CountyX Ittawamba CountyX Jackson CountyX Jasper CountyX Jefferson CountyX Jefferson Davis CountyX Jones CountyX Kemper CountyX Lafayette CountyX Lamar CountyX Lauderdale CountyX Lawerence CountyX Leake CountyX Lee CountyX Leflore CountyX Lincoln CountyX Lowndes CountyX Madison CountyX Marion CountyX Marshall CountyX Monroe CountyX Montgomery CountyX Neshoba CountyX Newton CountyX Noxubee CountyX Oktibbeha CountyX Panola CountyX Pearl River CountyX Perry CountyX Pike CountyX Pontotoc CountyX Prentiss CountyX Quitman CountyX Rankin CountyX Scott CountyX Sharkey CountyX Simpson CountyX Smith CountyX Stone CountyX Sunflower CountyX Tallahatchie CountyX Tate CountyX Tippah CountyX Tishomingo CountyX Tunica CountyX Union CountyX Walthall CountyX Warren CountyX Washington CountyX Wayne CountyX Webster CountyX Wilkinson CountyX Winston CountyX Yalobusha CountyX Yazoo CountyX

Mississippi—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 Adams CountyX Alcorn CountyX Amite CountyX Attala CountyX Benton CountyX Bolivar CountyX Calhoun CountyX Carroll CountyX Chickasaw CountyX Choctaw CountyX Clairborne CountyX Clarke CountyX Clay CountyX Coahoma CountyX Copiah CountyX Covington CountyX DeSoto CountyX Forest CountyX Franklin CountyX George CountyX Greene CountyX Grenada CountyX Hancock CountyX Harrison CountyX Hinds CountyX Holmes CountyX Humphreys CountyX Issaquena CountyX Ittawamba CountyX Jackson CountyX Jasper CountyX Jefferson CountyX Jefferson Davis CountyX Jones CountyX Kemper CountyX Lafayette CountyX Lamar CountyX Lauderdale CountyX Lawrence CountyX Leake CountyX Lee CountyX Leflore CountyX Lincoln CountyX Lowndes CountyX Madison CountyX Marion CountyX Marshall CountyX Monroe CountyX Montgomery CountyX Neshoba CountyX Newton CountyX Noxubee CountyX Oktibbeha CountyX Panola CountyX Pearl River CountyX Perry CountyX Pike CountyX Pontotoc CountyX Prentiss CountyX Quitman CountyX Rankin CountyX Scott CountyX Sharkey CountyX Simpson CountyX Smith CountyX Stone CountyX Sunflower CountyX Tallahatchie CountyX Tate CountyX Tippah CountyX Tishomingo CountyX Tunica CountyX Union CountyX Walthall CountyX Warren CountyX Washington CountyX Wayne CountyX Webster CountyX Wilkinson CountyX Winston CountyX Yalobusha CountyX Yazoo CountyX

Mississippi—2010 Sulfur Dioxide NAAQS

[Primary]

Designated area 1Designation Date 2Type Adams CountyAttainment/Unclassifiable. Alcorn CountyAttainment/Unclassifiable. Amite CountyAttainment/Unclassifiable. Attala CountyAttainment/Unclassifiable. Benton CountyAttainment/Unclassifiable. Bolivar CountyAttainment/Unclassifiable. Calhoun CountyAttainment/Unclassifiable. Carroll CountyAttainment/Unclassifiable. Chickasaw CountyAttainment/Unclassifiable. Choctaw CountyAttainment/Unclassifiable. Claiborne CountyAttainment/Unclassifiable. Clarke CountyAttainment/Unclassifiable. Clay CountyAttainment/Unclassifiable. Coahoma CountyAttainment/Unclassifiable. Copiah CountyAttainment/Unclassifiable. Covington CountyAttainment/Unclassifiable. DeSoto CountyAttainment/Unclassifiable. Forrest CountyAttainment/Unclassifiable. Franklin CountyAttainment/Unclassifiable. George CountyAttainment/Unclassifiable. Greene CountyAttainment/Unclassifiable. Grenada CountyAttainment/Unclassifiable. Hancock CountyAttainment/Unclassifiable. Harrison CountyAttainment/Unclassifiable. Hinds CountyAttainment/Unclassifiable. Holmes CountyAttainment/Unclassifiable. Humphreys CountyAttainment/Unclassifiable. Issaquena CountyAttainment/Unclassifiable. Itawamba CountyAttainment/Unclassifiable. Jackson CountyAttainment/Unclassifiable. Jasper CountyAttainment/Unclassifiable. Jefferson CountyAttainment/Unclassifiable. Jefferson Davis CountyAttainment/Unclassifiable. Jones CountyAttainment/Unclassifiable. Kemper CountyAttainment/Unclassifiable. Lafayette CountyAttainment/Unclassifiable. Lamar County, MS9/12/16Attainment/Unclassifiable. Lauderdale CountyAttainment/Unclassifiable. Lawrence CountyAttainment/Unclassifiable. Leake CountyAttainment/Unclassifiable. Lee CountyAttainment/Unclassifiable. Leflore CountyAttainment/Unclassifiable. Lincoln CountyAttainment/Unclassifiable. Lowndes CountyAttainment/Unclassifiable. Madison CountyAttainment/Unclassifiable. Marion CountyAttainment/Unclassifiable. Marshall CountyAttainment/Unclassifiable. Monroe CountyAttainment/Unclassifiable. Montgomery CountyAttainment/Unclassifiable. Neshoba CountyAttainment/Unclassifiable. Newton CountyAttainment/Unclassifiable. Noxubee CountyAttainment/Unclassifiable. Oktibbeha CountyAttainment/Unclassifiable. Panola CountyAttainment/Unclassifiable. Pearl River CountyAttainment/Unclassifiable. Perry CountyAttainment/Unclassifiable. Pike CountyAttainment/Unclassifiable. Pontotoc CountyAttainment/Unclassifiable. Prentiss CountyAttainment/Unclassifiable. Quitman CountyAttainment/Unclassifiable. Rankin CountyAttainment/Unclassifiable. Scott CountyAttainment/Unclassifiable. Sharkey CountyAttainment/Unclassifiable. Simpson CountyAttainment/Unclassifiable. Smith CountyAttainment/Unclassifiable. Stone CountyAttainment/Unclassifiable. Sunflower CountyAttainment/Unclassifiable. Tallahatchie CountyAttainment/Unclassifiable. Tate CountyAttainment/Unclassifiable. Tippah CountyAttainment/Unclassifiable. Tishomingo CountyAttainment/Unclassifiable. Tunica CountyAttainment/Unclassifiable. Union CountyAttainment/Unclassifiable. Walthall CountyAttainment/Unclassifiable. Warren CountyAttainment/Unclassifiable. Washington CountyAttainment/Unclassifiable. Wayne CountyAttainment/Unclassifiable. Webster CountyAttainment/Unclassifiable. Wilkinson CountyAttainment/Unclassifiable. Winston CountyAttainment/Unclassifiable. Yalobusha CountyAttainment/Unclassifiable. Yazoo CountyAttainment/Unclassifiable.

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.

Mississippi—Carbon Monoxide

Designated Area Designation Classification Date 1Type Date 1Type StatewideUnclassifiable/Attainment Adams County Alcorn County Amite County Attala County Benton County Bolivar County Calhoun County Carroll County Chickasaw County Choctaw County Claiborne County Clarke County Clay County Coahoma County Copiah County Covington County DeSoto County Forrest County Franklin County George County Greene County Grenada County Hancock County Harrison County Hinds County Holmes County Humphreys County Issaquena County Itawamba County Jackson County Jasper County Jefferson County Jefferson Davis County Jones County Kemper County Lafayette County Lamar County Lauderdale County Lawrence County Leake County Lee County Leflore County Lincoln County Lowndes County Madison County Marion County Marshall County Monroe County Montgomery County Neshoba County Newton County Noxubee County Oktibbeha County Panola County Pearl River County Perry County Pike County Pontotoc County Prentiss County Quitman County Rankin County Scott County Sharkey County Simpson County Smith County Stone County Sunflower County Tallahatchie County Tate County Tippah County Tishomingo County Tunica County Union County Walthall County Warren County Washington County Wayne County Webster County Wilkinson County Winston County Yalobusha County Yazoo County

1 This date is November 15, 1990, unless otherwise noted.

Mississippi—Ozone (1-Hour Standard) 2

Designated area Designation Classification Date 1Type Date 1Type Memphis: De Soto County11/15/90Unclassifiable/Attainment11/15/90 StatewideUnclassifiable/Attainment Adams County Alcorn County Amite County Attala County Benton County Bolivar County Calhoun County Carroll County Chickasaw County Choctaw County Claiborne County Clarke County Clay County Coahoma County Copiah County Covington County Forrest County Franklin County George County Greene County Grenada County Hancock County Harrison County Hinds County Holmes County Humphreys County Issaquena County Itawamba County Jackson County Jasper County Jefferson County Jefferson Davis County Jones County Kemper County Lafayette County Lamar County Lauderdale County Lawrence County Leake County Lee County Leflore County Lincoln County Lowndes County Madison County Marion County Marshall County Monroe County Montgomery County Neshoba County Newton County Noxubee County Oktibbeha County Panola County Pearl River County Perry County Pike County Pontotoc County Prentiss County Quitman County Rankin County Scott County Sharkey County Simpson County Smith County Stone County Sunflower County Tallahatchie County Tate County Tippah County Tishomingo County Tunica County Union County Walthall County Warren County Washington County Wayne County Webster County Wilkinson County Winston County Yalobusha County Yazoo 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 Mississippi.

Mississippi—1997 Annual PM2.5 NAAQS

[Primary and Secondary]

Designated area Designation aClassification Date 1Type Date Type Statewide: Adams CountyUnclassifiable/Attainment. Alcorn CountyUnclassifiable/Attainment. Amite CountyUnclassifiable/Attainment. Attala CountyUnclassifiable/Attainment. Benton CountyUnclassifiable/Attainment. Bolivar CountyUnclassifiable/Attainment. Calhoun CountyUnclassifiable/Attainment. Carroll CountyUnclassifiable/Attainment. Chickasaw CountyUnclassifiable/Attainment. Choctaw CountyUnclassifiable/Attainment. Claiborne CountyUnclassifiable/Attainment. Clarke CountyUnclassifiable/Attainment. Clay CountyUnclassifiable/Attainment. Coahoma CountyUnclassifiable/Attainment. Copiah CountyUnclassifiable/Attainment. Covington CountyUnclassifiable/Attainment. DeSoto CountyUnclassifiable/Attainment. Forrest CountyUnclassifiable/Attainment. Franklin CountyUnclassifiable/Attainment. George CountyUnclassifiable/Attainment. Greene CountyUnclassifiable/Attainment. Grenada CountyUnclassifiable/Attainment. Hancock CountyUnclassifiable/Attainment. Harrison CountyUnclassifiable/Attainment. Hinds CountyUnclassifiable/Attainment. Holmes CountyUnclassifiable/Attainment. Humphreys CountyUnclassifiable/Attainment. Issaquena CountyUnclassifiable/Attainment. Itawamba CountyUnclassifiable/Attainment. Jackson CountyUnclassifiable/Attainment. Jasper CountyUnclassifiable/Attainment. Jefferson CountyUnclassifiable/Attainment. Jefferson Davis CountyUnclassifiable/Attainment. Jones CountyUnclassifiable/Attainment. Kemper CountyUnclassifiable/Attainment. Lafayette CountyUnclassifiable/Attainment. Lamar CountyUnclassifiable/Attainment. Lauderdale CountyUnclassifiable/Attainment. Lawrence CountyUnclassifiable/Attainment. Leake CountyUnclassifiable/Attainment. Lee CountyUnclassifiable/Attainment. Leflore CountyUnclassifiable/Attainment. Lincoln CountyUnclassifiable/Attainment. Lowndes CountyUnclassifiable/Attainment. Madison CountyUnclassifiable/Attainment. Marion CountyUnclassifiable/Attainment. Marshall CountyUnclassifiable/Attainment. Monroe CountyUnclassifiable/Attainment. Montgomery CountyUnclassifiable/Attainment. Neshoba CountyUnclassifiable/Attainment. Newton CountyUnclassifiable/Attainment. Noxubee CountyUnclassifiable/Attainment. Oktibbeha CountyUnclassifiable/Attainment. Panola CountyUnclassifiable/Attainment. Pearl River CountyUnclassifiable/Attainment. Perry CountyUnclassifiable/Attainment. Pike CountyUnclassifiable/Attainment. Pontotoc CountyUnclassifiable/Attainment. Prentiss CountyUnclassifiable/Attainment. Quitman CountyUnclassifiable/Attainment. Rankin CountyUnclassifiable/Attainment. Scott CountyUnclassifiable/Attainment. Sharkey CountyUnclassifiable/Attainment. Simpson CountyUnclassifiable/Attainment. Smith CountyUnclassifiable/Attainment. Stone CountyUnclassifiable/Attainment. Sunflower CountyUnclassifiable/Attainment. Tallahatchie CountyUnclassifiable/Attainment. Tate CountyUnclassifiable/Attainment. Tippah CountyUnclassifiable/Attainment. Tishomingo CountyUnclassifiable/Attainment. Tunica CountyUnclassifiable/Attainment. Union CountyUnclassifiable/Attainment. Walthall CountyUnclassifiable/Attainment. Warren CountyUnclassifiable/Attainment. Washington CountyUnclassifiable/Attainment. Wayne CountyUnclassifiable/Attainment. Webster CountyUnclassifiable/Attainment. Wilkinson CountyUnclassifiable/Attainment. Winston CountyUnclassifiable/Attainment. Yalobusha CountyUnclassifiable/Attainment. Yazoo CountyUnclassifiable/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.

Mississippi—2012 Annual PM2.5 NAAQS

[Primary]

Designated area 1Designation Classification Date 2Type Date 2Type Statewide: Adams CountyUnclassifiable/Attainment Alcorn CountyUnclassifiable/Attainment Amite CountyUnclassifiable/Attainment Attala CountyUnclassifiable/Attainment Benton CountyUnclassifiable/Attainment Bolivar CountyUnclassifiable/Attainment Calhoun CountyUnclassifiable/Attainment Carroll CountyUnclassifiable/Attainment Chickasaw CountyUnclassifiable/Attainment Choctaw CountyUnclassifiable/Attainment Claiborne CountyUnclassifiable/Attainment Clarke CountyUnclassifiable/Attainment Clay CountyUnclassifiable/Attainment Coahoma CountyUnclassifiable/Attainment Copiah CountyUnclassifiable/Attainment Covington CountyUnclassifiable/Attainment DeSoto CountyUnclassifiable/Attainment Forrest CountyUnclassifiable/Attainment Franklin CountyUnclassifiable/Attainment George CountyUnclassifiable/Attainment Greene CountyUnclassifiable/Attainment Grenada CountyUnclassifiable/Attainment Hancock CountyUnclassifiable/Attainment Harrison CountyUnclassifiable/Attainment Hinds CountyUnclassifiable/Attainment Holmes CountyUnclassifiable/Attainment Humphreys CountyUnclassifiable/Attainment Issaquena CountyUnclassifiable/Attainment Itawamba CountyUnclassifiable/Attainment Jackson CountyUnclassifiable/Attainment Jasper CountyUnclassifiable/Attainment Jefferson CountyUnclassifiable/Attainment Jefferson Davis CountyUnclassifiable/Attainment Jones CountyUnclassifiable/Attainment Kemper CountyUnclassifiable/Attainment Lafayette CountyUnclassifiable/Attainment Lamar CountyUnclassifiable/Attainment Lauderdale CountyUnclassifiable/Attainment Lawrence CountyUnclassifiable/Attainment Leake CountyUnclassifiable/Attainment Lee CountyUnclassifiable/Attainment Leflore CountyUnclassifiable/Attainment Lincoln CountyUnclassifiable/Attainment Lowndes CountyUnclassifiable/Attainment Madison CountyUnclassifiable/Attainment Marion CountyUnclassifiable/Attainment Marshall CountyUnclassifiable/Attainment Monroe CountyUnclassifiable/Attainment Montgomery CountyUnclassifiable/Attainment Neshoba CountyUnclassifiable/Attainment Newton CountyUnclassifiable/Attainment Noxubee CountyUnclassifiable/Attainment Oktibbeha CountyUnclassifiable/Attainment Panola CountyUnclassifiable/Attainment Pearl River CountyUnclassifiable/Attainment Perry CountyUnclassifiable/Attainment Pike CountyUnclassifiable/Attainment Pontotoc CountyUnclassifiable/Attainment Prentiss CountyUnclassifiable/Attainment Quitman CountyUnclassifiable/Attainment Rankin CountyUnclassifiable/Attainment Scott CountyUnclassifiable/Attainment Sharkey CountyUnclassifiable/Attainment Simpson CountyUnclassifiable/Attainment Smith CountyUnclassifiable/Attainment Stone CountyUnclassifiable/Attainment Sunflower CountyUnclassifiable/Attainment Tallahatchie CountyUnclassifiable/Attainment Tate CountyUnclassifiable/Attainment Tippah CountyUnclassifiable/Attainment Tishomingo CountyUnclassifiable/Attainment Tunica CountyUnclassifiable/Attainment Union CountyUnclassifiable/Attainment Walthall CountyUnclassifiable/Attainment Warren CountyUnclassifiable/Attainment Washington CountyUnclassifiable/Attainment Wayne CountyUnclassifiable/Attainment Webster CountyUnclassifiable/Attainment Wilkinson CountyUnclassifiable/Attainment Winston CountyUnclassifiable/Attainment Yalobusha CountyUnclassifiable/Attainment Yazoo CountyUnclassifiable/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.

Mississippi—1997 24-Hour PM2.5 NAAQS

[Primary and Secondary]

Designated area Designation aClassification Date 1Type Date Type Statewide: Adams CountyUnclassifiable/Attainment. Alcorn CountyUnclassifiable/Attainment. Amite CountyUnclassifiable/Attainment. Attala CountyUnclassifiable/Attainment. Benton CountyUnclassifiable/Attainment. Bolivar CountyUnclassifiable/Attainment. Calhoun CountyUnclassifiable/Attainment. Carroll CountyUnclassifiable/Attainment. Chickasaw CountyUnclassifiable/Attainment. Choctaw CountyUnclassifiable/Attainment. Claiborne CountyUnclassifiable/Attainment. Clarke CountyUnclassifiable/Attainment. Clay CountyUnclassifiable/Attainment. Coahoma CountyUnclassifiable/Attainment. Copiah CountyUnclassifiable/Attainment. Covington CountyUnclassifiable/Attainment. DeSoto CountyUnclassifiable/Attainment. Forrest CountyUnclassifiable/Attainment. Franklin CountyUnclassifiable/Attainment. George CountyUnclassifiable/Attainment. Greene CountyUnclassifiable/Attainment. Grenada CountyUnclassifiable/Attainment. Hancock CountyUnclassifiable/Attainment. Harrison CountyUnclassifiable/Attainment. Hinds CountyUnclassifiable/Attainment. Holmes CountyUnclassifiable/Attainment. Humphreys CountyUnclassifiable/Attainment. Issaquena CountyUnclassifiable/Attainment. Itawamba CountyUnclassifiable/Attainment. Jackson CountyUnclassifiable/Attainment. Jasper CountyUnclassifiable/Attainment. Jefferson CountyUnclassifiable/Attainment. Jefferson Davis CountyUnclassifiable/Attainment. Jones CountyUnclassifiable/Attainment. Kemper CountyUnclassifiable/Attainment. Lafayette CountyUnclassifiable/Attainment. Lamar CountyUnclassifiable/Attainment. Lauderdale CountyUnclassifiable/Attainment. Lawrence CountyUnclassifiable/Attainment. Leake CountyUnclassifiable/Attainment. Lee CountyUnclassifiable/Attainment. Leflore CountyUnclassifiable/Attainment. Lincoln CountyUnclassifiable/Attainment. Lowndes CountyUnclassifiable/Attainment. Madison CountyUnclassifiable/Attainment. Marion CountyUnclassifiable/Attainment. Marshall CountyUnclassifiable/Attainment. Monroe CountyUnclassifiable/Attainment. Montgomery CountyUnclassifiable/Attainment. Neshoba CountyUnclassifiable/Attainment. Newton CountyUnclassifiable/Attainment. Noxubee CountyUnclassifiable/Attainment. Oktibbeha CountyUnclassifiable/Attainment. Panola CountyUnclassifiable/Attainment. Pearl River CountyUnclassifiable/Attainment. Perry CountyUnclassifiable/Attainment. Pike CountyUnclassifiable/Attainment. Pontotoc CountyUnclassifiable/Attainment. Prentiss CountyUnclassifiable/Attainment. Quitman CountyUnclassifiable/Attainment. Rankin CountyUnclassifiable/Attainment. Scott CountyUnclassifiable/Attainment. Sharkey CountyUnclassifiable/Attainment. Simpson CountyUnclassifiable/Attainment. Smith CountyUnclassifiable/Attainment. Stone CountyUnclassifiable/Attainment. Sunflower CountyUnclassifiable/Attainment. Tallahatchie CountyUnclassifiable/Attainment. Tate CountyUnclassifiable/Attainment. Tippah CountyUnclassifiable/Attainment. Tishomingo CountyUnclassifiable/Attainment. Tunica CountyUnclassifiable/Attainment. Union CountyUnclassifiable/Attainment. Walthall CountyUnclassifiable/Attainment. Warren CountyUnclassifiable/Attainment. Washington CountyUnclassifiable/Attainment. Wayne CountyUnclassifiable/Attainment. Webster CountyUnclassifiable/Attainment. Wilkinson CountyUnclassifiable/Attainment. Winston CountyUnclassifiable/Attainment. Yalobusha CountyUnclassifiable/Attainment. Yazoo CountyUnclassifiable/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.

Mississippi—2006 24-Hour PM2.5 NAAQS

[Primary and Secondary]

Designated area Designation aClassification Date 1Type Date Type Statewide: Adams CountyUnclassifiable/Attainment. Alcorn CountyUnclassifiable/Attainment. Amite CountyUnclassifiable/Attainment. Attala CountyUnclassifiable/Attainment. Benton CountyUnclassifiable/Attainment. Bolivar CountyUnclassifiable/Attainment. Calhoun CountyUnclassifiable/Attainment. Carroll CountyUnclassifiable/Attainment. Chickasaw CountyUnclassifiable/Attainment. Choctaw CountyUnclassifiable/Attainment. Claiborne CountyUnclassifiable/Attainment. Clarke CountyUnclassifiable/Attainment. Clay CountyUnclassifiable/Attainment. Coahoma CountyUnclassifiable/Attainment. Copiah CountyUnclassifiable/Attainment. Covington CountyUnclassifiable/Attainment. DeSoto CountyUnclassifiable/Attainment. Forrest CountyUnclassifiable/Attainment. Franklin CountyUnclassifiable/Attainment. George CountyUnclassifiable/Attainment. Greene CountyUnclassifiable/Attainment. Grenada CountyUnclassifiable/Attainment. Hancock CountyUnclassifiable/Attainment. Harrison CountyUnclassifiable/Attainment. Hinds CountyUnclassifiable/Attainment. Holmes CountyUnclassifiable/Attainment. Humphreys CountyUnclassifiable/Attainment. Issaquena CountyUnclassifiable/Attainment. Itawamba CountyUnclassifiable/Attainment. Jackson CountyUnclassifiable/Attainment. Jasper CountyUnclassifiable/Attainment. Jefferson CountyUnclassifiable/Attainment. Jefferson Davis CountyUnclassifiable/Attainment. Jones CountyUnclassifiable/Attainment. Kemper CountyUnclassifiable/Attainment. Lafayette CountyUnclassifiable/Attainment. Lamar CountyUnclassifiable/Attainment. Lauderdale CountyUnclassifiable/Attainment. Lawrence CountyUnclassifiable/Attainment. Leake CountyUnclassifiable/Attainment. Lee CountyUnclassifiable/Attainment. Leflore CountyUnclassifiable/Attainment. Lincoln CountyUnclassifiable/Attainment. Lowndes CountyUnclassifiable/Attainment. Madison CountyUnclassifiable/Attainment. Marion CountyUnclassifiable/Attainment. Marshall CountyUnclassifiable/Attainment. Monroe CountyUnclassifiable/Attainment. Montgomery CountyUnclassifiable/Attainment. Neshoba CountyUnclassifiable/Attainment. Newton CountyUnclassifiable/Attainment. Noxubee CountyUnclassifiable/Attainment. Oktibbeha CountyUnclassifiable/Attainment. Panola CountyUnclassifiable/Attainment. Pearl River CountyUnclassifiable/Attainment. Perry CountyUnclassifiable/Attainment. Pike CountyUnclassifiable/Attainment. Pontotoc CountyUnclassifiable/Attainment. Prentiss CountyUnclassifiable/Attainment. Quitman CountyUnclassifiable/Attainment. Rankin CountyUnclassifiable/Attainment. Scott CountyUnclassifiable/Attainment. Sharkey CountyUnclassifiable/Attainment. Simpson CountyUnclassifiable/Attainment. Smith CountyUnclassifiable/Attainment. Stone CountyUnclassifiable/Attainment. Sunflower CountyUnclassifiable/Attainment. Tallahatchie CountyUnclassifiable/Attainment. Tate CountyUnclassifiable/Attainment. Tippah CountyUnclassifiable/Attainment. Tishomingo CountyUnclassifiable/Attainment. Tunica CountyUnclassifiable/Attainment. Union CountyUnclassifiable/Attainment. Walthall CountyUnclassifiable/Attainment. Warren CountyUnclassifiable/Attainment. Washington CountyUnclassifiable/Attainment. Wayne CountyUnclassifiable/Attainment. Webster CountyUnclassifiable/Attainment. Wilkinson CountyUnclassifiable/Attainment. Winston CountyUnclassifiable/Attainment. Yalobusha CountyUnclassifiable/Attainment. Yazoo CountyUnclassifiable/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.

Mississippi—NO2 (1971 Annual Standard)

Designated area Does not meet primary standards Cannot be classified or better than national standards StatewideX

Mississippi—NO2 (2010 1-Hour Standard)

Designated area Designation aDate 1Type Adams CountyUnclassifiable/Attainment. Alcorn CountyUnclassifiable/Attainment. Amite CountyUnclassifiable/Attainment. Attala CountyUnclassifiable/Attainment. Benton CountyUnclassifiable/Attainment. Bolivar CountyUnclassifiable/Attainment. Calhoun CountyUnclassifiable/Attainment. Carroll CountyUnclassifiable/Attainment. Chickasaw CountyUnclassifiable/Attainment. Choctaw CountyUnclassifiable/Attainment. Claiborne CountyUnclassifiable/Attainment. Clarke CountyUnclassifiable/Attainment. Clay CountyUnclassifiable/Attainment. Coahoma CountyUnclassifiable/Attainment. Copiah CountyUnclassifiable/Attainment. Covington CountyUnclassifiable/Attainment. DeSoto CountyUnclassifiable/Attainment. Forrest CountyUnclassifiable/Attainment. Franklin CountyUnclassifiable/Attainment. George CountyUnclassifiable/Attainment. Greene CountyUnclassifiable/Attainment. Grenada CountyUnclassifiable/Attainment. Hancock CountyUnclassifiable/Attainment. Harrison CountyUnclassifiable/Attainment. Hinds CountyUnclassifiable/Attainment. Holmes CountyUnclassifiable/Attainment. Humphreys CountyUnclassifiable/Attainment. Issaquena CountyUnclassifiable/Attainment. Itawamba CountyUnclassifiable/Attainment. Jackson CountyUnclassifiable/Attainment. Jasper CountyUnclassifiable/Attainment. Jefferson CountyUnclassifiable/Attainment. Jefferson Davis CountyUnclassifiable/Attainment. Jones CountyUnclassifiable/Attainment. Kemper CountyUnclassifiable/Attainment. Lafayette CountyUnclassifiable/Attainment. Lamar CountyUnclassifiable/Attainment. Lauderdale CountyUnclassifiable/Attainment. Lawrence CountyUnclassifiable/Attainment. Leake CountyUnclassifiable/Attainment. Lee CountyUnclassifiable/Attainment. Leflore CountyUnclassifiable/Attainment. Lincoln CountyUnclassifiable/Attainment. Lowndes CountyUnclassifiable/Attainment. Madison CountyUnclassifiable/Attainment. Marion CountyUnclassifiable/Attainment. Marshall CountyUnclassifiable/Attainment. Monroe CountyUnclassifiable/Attainment. Montgomery CountyUnclassifiable/Attainment. Neshoba CountyUnclassifiable/Attainment. Newton CountyUnclassifiable/Attainment. Noxubee CountyUnclassifiable/Attainment. Oktibbeha CountyUnclassifiable/Attainment. Panola CountyUnclassifiable/Attainment. Pearl River CountyUnclassifiable/Attainment. Perry CountyUnclassifiable/Attainment. Pike CountyUnclassifiable/Attainment. Pontotoc CountyUnclassifiable/Attainment. Prentiss CountyUnclassifiable/Attainment. Quitman CountyUnclassifiable/Attainment. Rankin CountyUnclassifiable/Attainment. Scott CountyUnclassifiable/Attainment. Sharkey CountyUnclassifiable/Attainment. Simpson CountyUnclassifiable/Attainment. Smith CountyUnclassifiable/Attainment. Stone CountyUnclassifiable/Attainment. Sunflower CountyUnclassifiable/Attainment. Tallahatchie CountyUnclassifiable/Attainment. Tate CountyUnclassifiable/Attainment. Tippah CountyUnclassifiable/Attainment. Tishomingo CountyUnclassifiable/Attainment. Tunica CountyUnclassifiable/Attainment. Union CountyUnclassifiable/Attainment. Walthall CountyUnclassifiable/Attainment. Warren CountyUnclassifiable/Attainment. Washington CountyUnclassifiable/Attainment. Wayne CountyUnclassifiable/Attainment. Webster CountyUnclassifiable/Attainment. Wilkinson CountyUnclassifiable/Attainment. Winston CountyUnclassifiable/Attainment. Yalobusha CountyUnclassifiable/Attainment. Yazoo CountyUnclassifiable/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.

Mississippi—1997 8-Hour Ozone NAAQS

[Primary and Secondary]

Designated area Designation aCategory/classification Date 1Type Date 1Type StatewideUnclassifiable/Attainment. Adams County Alcorn County Amite County Attala County Benton County Bolivar County Calhoun County Carroll County Chickasaw County Choctaw County Claiborne County Clarke County Clay County Coahoma County Copiah County Covington County DeSoto County Forrest County Franklin County George County Greene County Grenada County Hancock County Harrison County Hinds County Holmes County Humphreys County Issaquena County Itawamba County Jackson County Jasper County Jefferson County Jefferson Davis County Jones County Kemper County Lafayette County Lamar County Lauderdale County Lawrence County Leake County Lee County Leflore County Lincoln County Lowndes County Madison County Marion County Marshall County Monroe County Montgomery County Neshoba County Newton County Noxubee County Oktibbeha County Panola County Pearl River County Perry County Pike County Pontotoc County Prentiss County Quitman County Rankin County Scott County Sharkey County Simpson County Smith County Stone County Sunflower County Tallahatchie County Tate County Tippah County Tishomingo County Tunica County Union County Walthall County Warren County Washington County Wayne County Webster County Wilkinson County Winston County Yalobusha County Yazoo 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.

Mississippi—2008 8-Hour Ozone NAAQS

[Primary and Secondary]

Designated area Designation Classification Date 1Type Date 1Type Memphis, TN-MS-AR: 2DeSoto County (part) Portion along MPO Lines4/8/16Attainment Rest of State: 3Adams CountyUnclassifiable/Attainment Alcorn CountyUnclassifiable/Attainment Amite CountyUnclassifiable/Attainment Attala CountyUnclassifiable/Attainment Benton CountyUnclassifiable/Attainment Bolivar CountyUnclassifiable/Attainment Calhoun CountyUnclassifiable/Attainment Carroll CountyUnclassifiable/Attainment Chickasaw CountyUnclassifiable/Attainment Choctaw CountyUnclassifiable/Attainment Claiborne CountyUnclassifiable/Attainment Clarke CountyUnclassifiable/Attainment Clay CountyUnclassifiable/Attainment. Coahoma CountyUnclassifiable/Attainment Copiah CountyUnclassifiable/Attainment Covington CountyUnclassifiable/Attainment DeSoto County (remainder)Unclassifiable/Attainment Forrest CountyUnclassifiable/Attainment Franklin CountyUnclassifiable/Attainment George CountyUnclassifiable/Attainment Greene CountyUnclassifiable/Attainment Grenada CountyUnclassifiable/Attainment Hancock CountyUnclassifiable/Attainment Harrison CountyUnclassifiable/Attainment Hinds CountyUnclassifiable/Attainment Holmes CountyUnclassifiable/Attainment Humphreys CountyUnclassifiable/Attainment Issaquena CountyUnclassifiable/Attainment Itawamba CountyUnclassifiable/Attainment Jackson CountyUnclassifiable/Attainment Jasper CountyUnclassifiable/Attainment Jefferson CountyUnclassifiable/Attainment Jefferson Davis CountyUnclassifiable/Attainment Jones CountyUnclassifiable/Attainment Kemper CountyUnclassifiable/Attainment Lafayette CountyUnclassifiable/Attainment Lamar CountyUnclassifiable/Attainment Lauderdale CountyUnclassifiable/Attainment Lawrence CountyUnclassifiable/Attainment Leake CountyUnclassifiable/Attainment Lee CountyUnclassifiable/Attainment Leflore CountyUnclassifiable/Attainment Lincoln CountyUnclassifiable/Attainment Lowndes CountyUnclassifiable/Attainment Madison CountyUnclassifiable/Attainment Marion CountyUnclassifiable/Attainment Marshall CountyUnclassifiable/Attainment Monroe CountyUnclassifiable/Attainment Montgomery CountyUnclassifiable/Attainment Neshoba CountyUnclassifiable/Attainment Newton CountyUnclassifiable/Attainment Noxubee CountyUnclassifiable/Attainment Oktibbeha CountyUnclassifiable/Attainment Panola CountyUnclassifiable/Attainment Pearl River CountyUnclassifiable/Attainment Perry CountyUnclassifiable/Attainment Pike CountyUnclassifiable/Attainment Pontotoc CountyUnclassifiable/Attainment Prentiss CountyUnclassifiable/Attainment Quitman CountyUnclassifiable/Attainment Rankin CountyUnclassifiable/Attainment Scott CountyUnclassifiable/Attainment Sharkey CountyUnclassifiable/Attainment Simpson CountyUnclassifiable/Attainment Smith CountyUnclassifiable/Attainment Stone CountyUnclassifiable/Attainment Sunflower CountyUnclassifiable/Attainment Tallahatchie CountyUnclassifiable/Attainment Tate County.Unclassifiable/Attainment Tippah CountyUnclassifiable/Attainment Tishomingo CountyUnclassifiable/Attainment Tunica CountyUnclassifiable/Attainment Union CountyUnclassifiable/Attainment Walthall CountyUnclassifiable/Attainment Warren CountyUnclassifiable/Attainment Washington CountyUnclassifiable/Attainment Wayne CountyUnclassifiable/Attainment Webster CountyUnclassifiable/Attainment Wilkinson CountyUnclassifiable/Attainment Winston CountyUnclassifiable/Attainment Yalobusha CountyUnclassifiable/Attainment Yazoo CountyUnclassifiable/Attainment

1 This date is July 20, 2012, unless otherwise noted.

2 Excludes Indian country located in each area, unless otherwise noted.

3 Includes any Indian country in each county or area, unless otherwise specified.

Mississippi—2015 8-Hour Ozone NAAQS

[Primary and Secondary]

Designated area 1Designation Classification Date 2Type Date Type Adams CountyAttainment/Unclassifiable Alcorn CountyAttainment/Unclassifiable Amite CountyAttainment/Unclassifiable Attala CountyAttainment/Unclassifiable Benton CountyAttainment/Unclassifiable Bolivar CountyAttainment/Unclassifiable Calhoun CountyAttainment/Unclassifiable Carroll CountyAttainment/Unclassifiable Chickasaw CountyAttainment/Unclassifiable Choctaw CountyAttainment/Unclassifiable Claiborne CountyAttainment/Unclassifiable Clarke CountyAttainment/Unclassifiable Clay CountyAttainment/Unclassifiable Coahoma CountyAttainment/Unclassifiable Copiah CountyAttainment/Unclassifiable Covington CountyAttainment/Unclassifiable DeSoto CountyAttainment/Unclassifiable Forrest CountyAttainment/Unclassifiable Franklin CountyAttainment/Unclassifiable George CountyAttainment/Unclassifiable Greene CountyAttainment/Unclassifiable Grenada CountyAttainment/Unclassifiable Hancock CountyAttainment/Unclassifiable Harrison CountyAttainment/Unclassifiable Hinds CountyAttainment/Unclassifiable Holmes CountyAttainment/Unclassifiable Humphreys CountyAttainment/Unclassifiable Issaquena CountyAttainment/Unclassifiable Itawamba CountyAttainment/Unclassifiable Jackson CountyAttainment/Unclassifiable Jasper CountyAttainment/Unclassifiable Jefferson CountyAttainment/Unclassifiable Jefferson Davis CountyAttainment/Unclassifiable Jones CountyAttainment/Unclassifiable Kemper CountyAttainment/Unclassifiable Lafayette CountyAttainment/Unclassifiable Lamar CountyAttainment/Unclassifiable Lauderdale CountyAttainment/Unclassifiable Lawrence CountyAttainment/Unclassifiable Leake CountyAttainment/Unclassifiable Lee CountyAttainment/Unclassifiable Leflore CountyAttainment/Unclassifiable Lincoln CountyAttainment/Unclassifiable Lowndes CountyAttainment/Unclassifiable Madison CountyAttainment/Unclassifiable Marion CountyAttainment/Unclassifiable Marshall CountyAttainment/Unclassifiable Monroe CountyAttainment/Unclassifiable Montgomery CountyAttainment/Unclassifiable Neshoba CountyAttainment/Unclassifiable Newton CountyAttainment/Unclassifiable Noxubee CountyAttainment/Unclassifiable Oktibbeha CountyAttainment/Unclassifiable Panola CountyAttainment/Unclassifiable Pearl River CountyAttainment/Unclassifiable Perry CountyAttainment/Unclassifiable Pike CountyAttainment/Unclassifiable Pontotoc CountyAttainment/Unclassifiable Prentiss CountyAttainment/Unclassifiable Quitman CountyAttainment/Unclassifiable Rankin CountyAttainment/Unclassifiable Scott CountyAttainment/Unclassifiable Sharkey CountyAttainment/Unclassifiable Simpson CountyAttainment/Unclassifiable Smith CountyAttainment/Unclassifiable Stone CountyAttainment/Unclassifiable Sunflower CountyAttainment/Unclassifiable Tallahatchie CountyAttainment/Unclassifiable Tate CountyAttainment/Unclassifiable Tippah CountyAttainment/Unclassifiable Tishomingo CountyAttainment/Unclassifiable Tunica CountyAttainment/Unclassifiable Union CountyAttainment/Unclassifiable Walthall CountyAttainment/Unclassifiable Warren CountyAttainment/Unclassifiable Washington CountyAttainment/Unclassifiable Wayne CountyAttainment/Unclassifiable Webster CountyAttainment/Unclassifiable Wilkinson CountyAttainment/Unclassifiable Winston CountyAttainment/Unclassifiable Yalobusha CountyAttainment/Unclassifiable Yazoo CountyAttainment/Unclassifiable

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.

Mississippi—2008 Lead NAAQS

Designated area Designation for the 2008 NAAQS aDate 1Type Whole StateUnclassifiable/Attainment.

a Includes Indian Country located in each county or area, except as otherwise specified.

1 December 31, 2011 unless otherwise noted.

[43 FR 8964, Mar. 3, 1978] Editorial Note:For Federal Register citations affecting § 81.325, see the List of CFR Sections Affected, which appears in the Finding Aids section of the printed volume and at www.govinfo.gov.

AUTHORITY: 42 U.S.C. 7401,

SOURCE: 36 FR 22421, Nov. 25, 1971, unless otherwise noted.

CITE AS: 40 CFR 81.325