40 CFR 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 County X

Alcorn County X

Amite County X

Attala County X

Benton County X

Bolivar County X

Calhoun County X

Carroll County X

Chickasaw County X

Choctaw County X

Clairborne County X

Clarke County X

Clay County X

Coahoma County X

Copiah County X

Covington County X

DeSoto County X

Forrest County X

Franklin County X

George County X

Greene County X

Grenada County X

Hancock County X

Harrison County X

Hinds County X

Holmes County X

Humphreys County X

Issaquena County X

Ittawamba County X

Jackson County X

Jasper County X

Jefferson County X

Jefferson Davis County X

Jones County X

Kemper County X

Lafayette County X

Lamar County X

Lauderdale County X

Lawerence County X

Leake County X

Lee County X

Leflore County X

Lincoln County X

Lowndes County X

Madison County X

Marion County X

Marshall County X

Monroe County X

Montgomery County X

Neshoba County X

Newton County X

Noxubee County X

Oktibbeha County X

Panola County X

Pearl River County X

Perry County X

Pike County X

Pontotoc County X

Prentiss County X

Quitman County X

Rankin County X

Scott County X

Sharkey County X

Simpson County X

Smith County X

Stone County X

Sunflower County X

Tallahatchie County X

Tate County X

Tippah County X

Tishomingo County X

Tunica County X

Union County X

Walthall County X

Warren County X

Washington County X

Wayne County X

Webster County X

Wilkinson County X

Winston County X

Yalobusha County X

Yazoo County X

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 County X

Alcorn County X

Amite County X

Attala County X

Benton County X

Bolivar County X

Calhoun County X

Carroll County X

Chickasaw County X

Choctaw County X

Clairborne County X

Clarke County X

Clay County X

Coahoma County X

Copiah County X

Covington County X

DeSoto County X

Forest County X

Franklin County X

George County X

Greene County X

Grenada County X

Hancock County X

Harrison County X

Hinds County X

Holmes County X

Humphreys County X

Issaquena County X

Ittawamba County X

Jackson County X

Jasper County X

Jefferson County X

Jefferson Davis County X

Jones County X

Kemper County X

Lafayette County X

Lamar County X

Lauderdale County X

Lawrence County X

Leake County X

Lee County X

Leflore County X

Lincoln County X

Lowndes County X

Madison County X

Marion County X

Marshall County X

Monroe County X

Montgomery County X

Neshoba County X

Newton County X

Noxubee County X

Oktibbeha County X

Panola County X

Pearl River County X

Perry County X

Pike County X

Pontotoc County X

Prentiss County X

Quitman County X

Rankin County X

Scott County X

Sharkey County X

Simpson County X

Smith County X

Stone County X

Sunflower County X

Tallahatchie County X

Tate County X

Tippah County X

Tishomingo County X

Tunica County X

Union County X

Walthall County X

Warren County X

Washington County X

Wayne County X

Webster County X

Wilkinson County X

Winston County X

Yalobusha County X

Yazoo County X

Mississippi—2010 Sulfur Dioxide NAAQS

[Primary]

Designated area 1 Designation

Date 2 Type

Adams County Attainment/Unclassifiable.

Alcorn County Attainment/Unclassifiable.

Amite County Attainment/Unclassifiable.

Attala County Attainment/Unclassifiable.

Benton County Attainment/Unclassifiable.

Bolivar County Attainment/Unclassifiable.

Calhoun County Attainment/Unclassifiable.

Carroll County Attainment/Unclassifiable.

Chickasaw County Attainment/Unclassifiable.

Choctaw County Attainment/Unclassifiable.

Claiborne County Attainment/Unclassifiable.

Clarke County Attainment/Unclassifiable.

Clay County Attainment/Unclassifiable.

Coahoma County Attainment/Unclassifiable.

Copiah County Attainment/Unclassifiable.

Covington County Attainment/Unclassifiable.

DeSoto County Attainment/Unclassifiable.

Forrest County Attainment/Unclassifiable.

Franklin County Attainment/Unclassifiable.

George County Attainment/Unclassifiable.

Greene County Attainment/Unclassifiable.

Grenada County Attainment/Unclassifiable.

Hancock County Attainment/Unclassifiable.

Harrison County Attainment/Unclassifiable.

Hinds County Attainment/Unclassifiable.

Holmes County Attainment/Unclassifiable.

Humphreys County Attainment/Unclassifiable.

Issaquena County Attainment/Unclassifiable.

Itawamba County Attainment/Unclassifiable.

Jackson County Attainment/Unclassifiable.

Jasper County Attainment/Unclassifiable.

Jefferson County Attainment/Unclassifiable.

Jefferson Davis County Attainment/Unclassifiable.

Jones County Attainment/Unclassifiable.

Kemper County Attainment/Unclassifiable.

Lafayette County Attainment/Unclassifiable.

Lamar County, MS 9/12/2016 Attainment/Unclassifiable.

Lauderdale County Attainment/Unclassifiable.

Lawrence County Attainment/Unclassifiable.

Leake County Attainment/Unclassifiable.

Lee County Attainment/Unclassifiable.

Leflore County Attainment/Unclassifiable.

Lincoln County Attainment/Unclassifiable.

Lowndes County Attainment/Unclassifiable.

Madison County Attainment/Unclassifiable.

Marion County Attainment/Unclassifiable.

Marshall County Attainment/Unclassifiable.

Monroe County Attainment/Unclassifiable.

Montgomery County Attainment/Unclassifiable.

Neshoba County Attainment/Unclassifiable.

Newton County Attainment/Unclassifiable.

Noxubee County Attainment/Unclassifiable.

Oktibbeha County Attainment/Unclassifiable.

Panola County Attainment/Unclassifiable.

Pearl River County Attainment/Unclassifiable.

Perry County Attainment/Unclassifiable.

Pike County Attainment/Unclassifiable.

Pontotoc County Attainment/Unclassifiable.

Prentiss County Attainment/Unclassifiable.

Quitman County Attainment/Unclassifiable.

Rankin County Attainment/Unclassifiable.

Scott County Attainment/Unclassifiable.

Sharkey County Attainment/Unclassifiable.

Simpson County Attainment/Unclassifiable.

Smith County Attainment/Unclassifiable.

Stone County Attainment/Unclassifiable.

Sunflower County Attainment/Unclassifiable.

Tallahatchie County Attainment/Unclassifiable.

Tate County Attainment/Unclassifiable.

Tippah County Attainment/Unclassifiable.

Tishomingo County Attainment/Unclassifiable.

Tunica County Attainment/Unclassifiable.

Union County Attainment/Unclassifiable.

Walthall County Attainment/Unclassifiable.

Warren County Attainment/Unclassifiable.

Washington County Attainment/Unclassifiable.

Wayne County Attainment/Unclassifiable.

Webster County Attainment/Unclassifiable.

Wilkinson County Attainment/Unclassifiable.

Winston County Attainment/Unclassifiable.

Yalobusha County Attainment/Unclassifiable.

Yazoo County Attainment/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 1 Type Date 1 Type

Statewide Unclassifiable/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 1 Type Date 1 Type

Memphis:

De Soto County 11/15/1990 Unclassifiable/Attainment 11/15/90

Statewide Unclassifiable/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 a Classification

Date 1 Type Date Type

Statewide:

Adams County Unclassifiable/Attainment.

Alcorn County Unclassifiable/Attainment.

Amite County Unclassifiable/Attainment.

Attala County Unclassifiable/Attainment.

Benton County Unclassifiable/Attainment.

Bolivar County Unclassifiable/Attainment.

Calhoun County Unclassifiable/Attainment.

Carroll County Unclassifiable/Attainment.

Chickasaw County Unclassifiable/Attainment.

Choctaw County Unclassifiable/Attainment.

Claiborne County Unclassifiable/Attainment.

Clarke County Unclassifiable/Attainment.

Clay County Unclassifiable/Attainment.

Coahoma County Unclassifiable/Attainment.

Copiah County Unclassifiable/Attainment.

Covington County Unclassifiable/Attainment.

DeSoto County Unclassifiable/Attainment.

Forrest County Unclassifiable/Attainment.

Franklin County Unclassifiable/Attainment.

George County Unclassifiable/Attainment.

Greene County Unclassifiable/Attainment.

Grenada County Unclassifiable/Attainment.

Hancock County Unclassifiable/Attainment.

Harrison County Unclassifiable/Attainment.

Hinds County Unclassifiable/Attainment.

Holmes County Unclassifiable/Attainment.

Humphreys County Unclassifiable/Attainment.

Issaquena County Unclassifiable/Attainment.

Itawamba County Unclassifiable/Attainment.

Jackson County Unclassifiable/Attainment.

Jasper County Unclassifiable/Attainment.

Jefferson County Unclassifiable/Attainment.

Jefferson Davis County Unclassifiable/Attainment.

Jones County Unclassifiable/Attainment.

Kemper County Unclassifiable/Attainment.

Lafayette County Unclassifiable/Attainment.

Lamar County Unclassifiable/Attainment.

Lauderdale County Unclassifiable/Attainment.

Lawrence County Unclassifiable/Attainment.

Leake County Unclassifiable/Attainment.

Lee County Unclassifiable/Attainment.

Leflore County Unclassifiable/Attainment.

Lincoln County Unclassifiable/Attainment.

Lowndes County Unclassifiable/Attainment.

Madison County Unclassifiable/Attainment.

Marion County Unclassifiable/Attainment.

Marshall County Unclassifiable/Attainment.

Monroe County Unclassifiable/Attainment.

Montgomery County Unclassifiable/Attainment.

Neshoba County Unclassifiable/Attainment.

Newton County Unclassifiable/Attainment.

Noxubee County Unclassifiable/Attainment.

Oktibbeha County Unclassifiable/Attainment.

Panola County Unclassifiable/Attainment.

Pearl River County Unclassifiable/Attainment.

Perry County Unclassifiable/Attainment.

Pike County Unclassifiable/Attainment.

Pontotoc County Unclassifiable/Attainment.

Prentiss County Unclassifiable/Attainment.

Quitman County Unclassifiable/Attainment.

Rankin County Unclassifiable/Attainment.

Scott County Unclassifiable/Attainment.

Sharkey County Unclassifiable/Attainment.

Simpson County Unclassifiable/Attainment.

Smith County Unclassifiable/Attainment.

Stone County Unclassifiable/Attainment.

Sunflower County Unclassifiable/Attainment.

Tallahatchie County Unclassifiable/Attainment.

Tate County Unclassifiable/Attainment.

Tippah County Unclassifiable/Attainment.

Tishomingo County Unclassifiable/Attainment.

Tunica County Unclassifiable/Attainment.

Union County Unclassifiable/Attainment.

Walthall County Unclassifiable/Attainment.

Warren County Unclassifiable/Attainment.

Washington County Unclassifiable/Attainment.

Wayne County Unclassifiable/Attainment.

Webster County Unclassifiable/Attainment.

Wilkinson County Unclassifiable/Attainment.

Winston County Unclassifiable/Attainment.

Yalobusha County Unclassifiable/Attainment.

Yazoo County Unclassifiable/Attainment.

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

1 This date is 90 days after January 5, 2005, unless otherwise noted.

Mississippi—2012 Annual PM2.5 NAAQS

[Primary]

Designated area 1 Designation Classification

Date 2 Type Date 2 Type

Statewide:

Adams County Unclassifiable/Attainment

Alcorn County Unclassifiable/Attainment

Amite County Unclassifiable/Attainment

Attala County Unclassifiable/Attainment

Benton County Unclassifiable/Attainment

Bolivar County Unclassifiable/Attainment

Calhoun County Unclassifiable/Attainment

Carroll County Unclassifiable/Attainment

Chickasaw County Unclassifiable/Attainment

Choctaw County Unclassifiable/Attainment

Claiborne County Unclassifiable/Attainment

Clarke County Unclassifiable/Attainment

Clay County Unclassifiable/Attainment

Coahoma County Unclassifiable/Attainment

Copiah County Unclassifiable/Attainment

Covington County Unclassifiable/Attainment

DeSoto County Unclassifiable/Attainment

Forrest County Unclassifiable/Attainment

Franklin County Unclassifiable/Attainment

George County Unclassifiable/Attainment

Greene County Unclassifiable/Attainment

Grenada County Unclassifiable/Attainment

Hancock County Unclassifiable/Attainment

Harrison County Unclassifiable/Attainment

Hinds County Unclassifiable/Attainment

Holmes County Unclassifiable/Attainment

Humphreys County Unclassifiable/Attainment

Issaquena County Unclassifiable/Attainment

Itawamba County Unclassifiable/Attainment

Jackson County Unclassifiable/Attainment

Jasper County Unclassifiable/Attainment

Jefferson County Unclassifiable/Attainment

Jefferson Davis County Unclassifiable/Attainment

Jones County Unclassifiable/Attainment

Kemper County Unclassifiable/Attainment

Lafayette County Unclassifiable/Attainment

Lamar County Unclassifiable/Attainment

Lauderdale County Unclassifiable/Attainment

Lawrence County Unclassifiable/Attainment

Leake County Unclassifiable/Attainment

Lee County Unclassifiable/Attainment

Leflore County Unclassifiable/Attainment

Lincoln County Unclassifiable/Attainment

Lowndes County Unclassifiable/Attainment

Madison County Unclassifiable/Attainment

Marion County Unclassifiable/Attainment

Marshall County Unclassifiable/Attainment

Monroe County Unclassifiable/Attainment

Montgomery County Unclassifiable/Attainment

Neshoba County Unclassifiable/Attainment

Newton County Unclassifiable/Attainment

Noxubee County Unclassifiable/Attainment

Oktibbeha County Unclassifiable/Attainment

Panola County Unclassifiable/Attainment

Pearl River County Unclassifiable/Attainment

Perry County Unclassifiable/Attainment

Pike County Unclassifiable/Attainment

Pontotoc County Unclassifiable/Attainment

Prentiss County Unclassifiable/Attainment

Quitman County Unclassifiable/Attainment

Rankin County Unclassifiable/Attainment

Scott County Unclassifiable/Attainment

Sharkey County Unclassifiable/Attainment

Simpson County Unclassifiable/Attainment

Smith County Unclassifiable/Attainment

Stone County Unclassifiable/Attainment

Sunflower County Unclassifiable/Attainment

Tallahatchie County Unclassifiable/Attainment

Tate County Unclassifiable/Attainment

Tippah County Unclassifiable/Attainment

Tishomingo County Unclassifiable/Attainment

Tunica County Unclassifiable/Attainment

Union County Unclassifiable/Attainment

Walthall County Unclassifiable/Attainment

Warren County Unclassifiable/Attainment

Washington County Unclassifiable/Attainment

Wayne County Unclassifiable/Attainment

Webster County Unclassifiable/Attainment

Wilkinson County Unclassifiable/Attainment

Winston County Unclassifiable/Attainment

Yalobusha County Unclassifiable/Attainment

Yazoo County Unclassifiable/Attainment

1 Includes areas of Indian country located in each county or area, except as otherwise specified.

2 This date is April 15, 2015, unless otherwise noted.

Mississippi—1997 24-Hour PM2.5 NAAQS

[Primary and Secondary]

Designated area Designation a Classification

Date1 Type Date Type

Statewide:

Adams County Unclassifiable/Attainment.

Alcorn County Unclassifiable/Attainment.

Amite County Unclassifiable/Attainment.

Attala County Unclassifiable/Attainment.

Benton County Unclassifiable/Attainment.

Bolivar County Unclassifiable/Attainment.

Calhoun County Unclassifiable/Attainment.

Carroll County Unclassifiable/Attainment.

Chickasaw County Unclassifiable/Attainment.

Choctaw County Unclassifiable/Attainment.

Claiborne County Unclassifiable/Attainment.

Clarke County Unclassifiable/Attainment.

Clay County Unclassifiable/Attainment.

Coahoma County Unclassifiable/Attainment.

Copiah County Unclassifiable/Attainment.

Covington County Unclassifiable/Attainment.

DeSoto County Unclassifiable/Attainment.

Forrest County Unclassifiable/Attainment.

Franklin County Unclassifiable/Attainment.

George County Unclassifiable/Attainment.

Greene County Unclassifiable/Attainment.

Grenada County Unclassifiable/Attainment.

Hancock County Unclassifiable/Attainment.

Harrison County Unclassifiable/Attainment.

Hinds County Unclassifiable/Attainment.

Holmes County Unclassifiable/Attainment.

Humphreys County Unclassifiable/Attainment.

Issaquena County Unclassifiable/Attainment.

Itawamba County Unclassifiable/Attainment.

Jackson County Unclassifiable/Attainment.

Jasper County Unclassifiable/Attainment.

Jefferson County Unclassifiable/Attainment.

Jefferson Davis County Unclassifiable/Attainment.

Jones County Unclassifiable/Attainment.

Kemper County Unclassifiable/Attainment.

Lafayette County Unclassifiable/Attainment.

Lamar County Unclassifiable/Attainment.

Lauderdale County Unclassifiable/Attainment.

Lawrence County Unclassifiable/Attainment.

Leake County Unclassifiable/Attainment.

Lee County Unclassifiable/Attainment.

Leflore County Unclassifiable/Attainment.

Lincoln County Unclassifiable/Attainment.

Lowndes County Unclassifiable/Attainment.

Madison County Unclassifiable/Attainment.

Marion County Unclassifiable/Attainment.

Marshall County Unclassifiable/Attainment.

Monroe County Unclassifiable/Attainment.

Montgomery County Unclassifiable/Attainment.

Neshoba County Unclassifiable/Attainment.

Newton County Unclassifiable/Attainment.

Noxubee County Unclassifiable/Attainment.

Oktibbeha County Unclassifiable/Attainment.

Panola County Unclassifiable/Attainment.

Pearl River County Unclassifiable/Attainment.

Perry County Unclassifiable/Attainment.

Pike County Unclassifiable/Attainment.

Pontotoc County Unclassifiable/Attainment.

Prentiss County Unclassifiable/Attainment.

Quitman County Unclassifiable/Attainment.

Rankin County Unclassifiable/Attainment.

Scott County Unclassifiable/Attainment.

Sharkey County Unclassifiable/Attainment.

Simpson County Unclassifiable/Attainment.

Smith County Unclassifiable/Attainment.

Stone County Unclassifiable/Attainment.

Sunflower County Unclassifiable/Attainment.

Tallahatchie County Unclassifiable/Attainment.

Tate County Unclassifiable/Attainment.

Tippah County Unclassifiable/Attainment.

Tishomingo County Unclassifiable/Attainment.

Tunica County Unclassifiable/Attainment.

Union County Unclassifiable/Attainment.

Walthall County Unclassifiable/Attainment.

Warren County Unclassifiable/Attainment.

Washington County Unclassifiable/Attainment.

Wayne County Unclassifiable/Attainment.

Webster County Unclassifiable/Attainment.

Wilkinson County Unclassifiable/Attainment.

Winston County Unclassifiable/Attainment.

Yalobusha County Unclassifiable/Attainment.

Yazoo County Unclassifiable/Attainment.

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

1 This date is 90 days after January 5, 2005, unless otherwise noted.

Mississippi—2006 24-Hour PM2.5 NAAQS

[Primary and Secondary]

Designated area Designation a Classification

Date 1 Type Date Type

Statewide:

Adams County Unclassifiable/Attainment.

Alcorn County Unclassifiable/Attainment.

Amite County Unclassifiable/Attainment.

Attala County Unclassifiable/Attainment.

Benton County Unclassifiable/Attainment.

Bolivar County Unclassifiable/Attainment.

Calhoun County Unclassifiable/Attainment.

Carroll County Unclassifiable/Attainment.

Chickasaw County Unclassifiable/Attainment.

Choctaw County Unclassifiable/Attainment.

Claiborne County Unclassifiable/Attainment.

Clarke County Unclassifiable/Attainment.

Clay County Unclassifiable/Attainment.

Coahoma County Unclassifiable/Attainment.

Copiah County Unclassifiable/Attainment.

Covington County Unclassifiable/Attainment.

DeSoto County Unclassifiable/Attainment.

Forrest County Unclassifiable/Attainment.

Franklin County Unclassifiable/Attainment.

George County Unclassifiable/Attainment.

Greene County Unclassifiable/Attainment.

Grenada County Unclassifiable/Attainment.

Hancock County Unclassifiable/Attainment.

Harrison County Unclassifiable/Attainment.

Hinds County Unclassifiable/Attainment.

Holmes County Unclassifiable/Attainment.

Humphreys County Unclassifiable/Attainment.

Issaquena County Unclassifiable/Attainment.

Itawamba County Unclassifiable/Attainment.

Jackson County Unclassifiable/Attainment.

Jasper County Unclassifiable/Attainment.

Jefferson County Unclassifiable/Attainment.

Jefferson Davis County Unclassifiable/Attainment.

Jones County Unclassifiable/Attainment.

Kemper County Unclassifiable/Attainment.

Lafayette County Unclassifiable/Attainment.

Lamar County Unclassifiable/Attainment.

Lauderdale County Unclassifiable/Attainment.

Lawrence County Unclassifiable/Attainment.

Leake County Unclassifiable/Attainment.

Lee County Unclassifiable/Attainment.

Leflore County Unclassifiable/Attainment.

Lincoln County Unclassifiable/Attainment.

Lowndes County Unclassifiable/Attainment.

Madison County Unclassifiable/Attainment.

Marion County Unclassifiable/Attainment.

Marshall County Unclassifiable/Attainment.

Monroe County Unclassifiable/Attainment.

Montgomery County Unclassifiable/Attainment.

Neshoba County Unclassifiable/Attainment.

Newton County Unclassifiable/Attainment.

Noxubee County Unclassifiable/Attainment.

Oktibbeha County Unclassifiable/Attainment.

Panola County Unclassifiable/Attainment.

Pearl River County Unclassifiable/Attainment.

Perry County Unclassifiable/Attainment.

Pike County Unclassifiable/Attainment.

Pontotoc County Unclassifiable/Attainment.

Prentiss County Unclassifiable/Attainment.

Quitman County Unclassifiable/Attainment.

Rankin County Unclassifiable/Attainment.

Scott County Unclassifiable/Attainment.

Sharkey County Unclassifiable/Attainment.

Simpson County Unclassifiable/Attainment.

Smith County Unclassifiable/Attainment.

Stone County Unclassifiable/Attainment.

Sunflower County Unclassifiable/Attainment.

Tallahatchie County Unclassifiable/Attainment.

Tate County Unclassifiable/Attainment.

Tippah County Unclassifiable/Attainment.

Tishomingo County Unclassifiable/Attainment.

Tunica County Unclassifiable/Attainment.

Union County Unclassifiable/Attainment.

Walthall County Unclassifiable/Attainment.

Warren County Unclassifiable/Attainment.

Washington County Unclassifiable/Attainment.

Wayne County Unclassifiable/Attainment.

Webster County Unclassifiable/Attainment.

Wilkinson County Unclassifiable/Attainment.

Winston County Unclassifiable/Attainment.

Yalobusha County Unclassifiable/Attainment.

Yazoo County Unclassifiable/Attainment.

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

1 This date is 30 days after November 13, 2009, unless otherwise noted.

Mississippi—NO2 (1971 Annual Standard)

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

Statewide X

Mississippi—NO2 (2010 1-Hour Standard)

Designated area Designation a

Date 1 Type

Adams County Unclassifiable/Attainment.

Alcorn County Unclassifiable/Attainment.

Amite County Unclassifiable/Attainment.

Attala County Unclassifiable/Attainment.

Benton County Unclassifiable/Attainment.

Bolivar County Unclassifiable/Attainment.

Calhoun County Unclassifiable/Attainment.

Carroll County Unclassifiable/Attainment.

Chickasaw County Unclassifiable/Attainment.

Choctaw County Unclassifiable/Attainment.

Claiborne County Unclassifiable/Attainment.

Clarke County Unclassifiable/Attainment.

Clay County Unclassifiable/Attainment.

Coahoma County Unclassifiable/Attainment.

Copiah County Unclassifiable/Attainment.

Covington County Unclassifiable/Attainment.

DeSoto County Unclassifiable/Attainment.

Forrest County Unclassifiable/Attainment.

Franklin County Unclassifiable/Attainment.

George County Unclassifiable/Attainment.

Greene County Unclassifiable/Attainment.

Grenada County Unclassifiable/Attainment.

Hancock County Unclassifiable/Attainment.

Harrison County Unclassifiable/Attainment.

Hinds County Unclassifiable/Attainment.

Holmes County Unclassifiable/Attainment.

Humphreys County Unclassifiable/Attainment.

Issaquena County Unclassifiable/Attainment.

Itawamba County Unclassifiable/Attainment.

Jackson County Unclassifiable/Attainment.

Jasper County Unclassifiable/Attainment.

Jefferson County Unclassifiable/Attainment.

Jefferson Davis County Unclassifiable/Attainment.

Jones County Unclassifiable/Attainment.

Kemper County Unclassifiable/Attainment.

Lafayette County Unclassifiable/Attainment.

Lamar County Unclassifiable/Attainment.

Lauderdale County Unclassifiable/Attainment.

Lawrence County Unclassifiable/Attainment.

Leake County Unclassifiable/Attainment.

Lee County Unclassifiable/Attainment.

Leflore County Unclassifiable/Attainment.

Lincoln County Unclassifiable/Attainment.

Lowndes County Unclassifiable/Attainment.

Madison County Unclassifiable/Attainment.

Marion County Unclassifiable/Attainment.

Marshall County Unclassifiable/Attainment.

Monroe County Unclassifiable/Attainment.

Montgomery County Unclassifiable/Attainment.

Neshoba County Unclassifiable/Attainment.

Newton County Unclassifiable/Attainment.

Noxubee County Unclassifiable/Attainment.

Oktibbeha County Unclassifiable/Attainment.

Panola County Unclassifiable/Attainment.

Pearl River County Unclassifiable/Attainment.

Perry County Unclassifiable/Attainment.

Pike County Unclassifiable/Attainment.

Pontotoc County Unclassifiable/Attainment.

Prentiss County Unclassifiable/Attainment.

Quitman County Unclassifiable/Attainment.

Rankin County Unclassifiable/Attainment.

Scott County Unclassifiable/Attainment.

Sharkey County Unclassifiable/Attainment.

Simpson County Unclassifiable/Attainment.

Smith County Unclassifiable/Attainment.

Stone County Unclassifiable/Attainment.

Sunflower County Unclassifiable/Attainment.

Tallahatchie County Unclassifiable/Attainment.

Tate County Unclassifiable/Attainment.

Tippah County Unclassifiable/Attainment.

Tishomingo County Unclassifiable/Attainment.

Tunica County Unclassifiable/Attainment.

Union County Unclassifiable/Attainment.

Walthall County Unclassifiable/Attainment.

Warren County Unclassifiable/Attainment.

Washington County Unclassifiable/Attainment.

Wayne County Unclassifiable/Attainment.

Webster County Unclassifiable/Attainment.

Wilkinson County Unclassifiable/Attainment.

Winston County Unclassifiable/Attainment.

Yalobusha County Unclassifiable/Attainment.

Yazoo County Unclassifiable/Attainment.

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

1 This date is 90 days after October 31, 2011, unless otherwise noted.

Mississippi—1997 8-Hour Ozone NAAQS

[Primary and Secondary]

Designated area Designation a Category/classification

Date 1 Type Date 1 Type

Statewide Unclassifiable/Attainment.

Adams County

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

Date1 Type Date1 Type

Memphis, TN-MS-AR: 2

DeSoto County (part) Portion along MPO Lines 4/8/2016 Attainment

Rest of State: 3

Adams County Unclassifiable/Attainment

Alcorn County Unclassifiable/Attainment

Amite County Unclassifiable/Attainment

Attala County Unclassifiable/Attainment

Benton County Unclassifiable/Attainment

Bolivar County Unclassifiable/Attainment

Calhoun County Unclassifiable/Attainment

Carroll County Unclassifiable/Attainment

Chickasaw County Unclassifiable/Attainment

Choctaw County Unclassifiable/Attainment

Claiborne County Unclassifiable/Attainment

Clarke County Unclassifiable/Attainment

Clay County Unclassifiable/Attainment.

Coahoma County Unclassifiable/Attainment

Copiah County Unclassifiable/Attainment

Covington County Unclassifiable/Attainment

DeSoto County (remainder) Unclassifiable/Attainment

Forrest County Unclassifiable/Attainment

Franklin County Unclassifiable/Attainment

George County Unclassifiable/Attainment

Greene County Unclassifiable/Attainment

Grenada County Unclassifiable/Attainment

Hancock County Unclassifiable/Attainment

Harrison County Unclassifiable/Attainment

Hinds County Unclassifiable/Attainment

Holmes County Unclassifiable/Attainment

Humphreys County Unclassifiable/Attainment

Issaquena County Unclassifiable/Attainment

Itawamba County Unclassifiable/Attainment

Jackson County Unclassifiable/Attainment

Jasper County Unclassifiable/Attainment

Jefferson County Unclassifiable/Attainment

Jefferson Davis County Unclassifiable/Attainment

Jones County Unclassifiable/Attainment

Kemper County Unclassifiable/Attainment

Lafayette County Unclassifiable/Attainment

Lamar County Unclassifiable/Attainment

Lauderdale County Unclassifiable/Attainment

Lawrence County Unclassifiable/Attainment

Leake County Unclassifiable/Attainment

Lee County Unclassifiable/Attainment

Leflore County Unclassifiable/Attainment

Lincoln County Unclassifiable/Attainment

Lowndes County Unclassifiable/Attainment

Madison County Unclassifiable/Attainment

Marion County Unclassifiable/Attainment

Marshall County Unclassifiable/Attainment

Monroe County Unclassifiable/Attainment

Montgomery County Unclassifiable/Attainment

Neshoba County Unclassifiable/Attainment

Newton County Unclassifiable/Attainment

Noxubee County Unclassifiable/Attainment

Oktibbeha County Unclassifiable/Attainment

Panola County Unclassifiable/Attainment

Pearl River County Unclassifiable/Attainment

Perry County Unclassifiable/Attainment

Pike County Unclassifiable/Attainment

Pontotoc County Unclassifiable/Attainment

Prentiss County Unclassifiable/Attainment

Quitman County Unclassifiable/Attainment

Rankin County Unclassifiable/Attainment

Scott County Unclassifiable/Attainment

Sharkey County Unclassifiable/Attainment

Simpson County Unclassifiable/Attainment

Smith County Unclassifiable/Attainment

Stone County Unclassifiable/Attainment

Sunflower County Unclassifiable/Attainment

Tallahatchie County Unclassifiable/Attainment

Tate County. Unclassifiable/Attainment

Tippah County Unclassifiable/Attainment

Tishomingo County Unclassifiable/Attainment

Tunica County Unclassifiable/Attainment

Union County Unclassifiable/Attainment

Walthall County Unclassifiable/Attainment

Warren County Unclassifiable/Attainment

Washington County Unclassifiable/Attainment

Wayne County Unclassifiable/Attainment

Webster County Unclassifiable/Attainment

Wilkinson County Unclassifiable/Attainment

Winston County Unclassifiable/Attainment

Yalobusha County Unclassifiable/Attainment

Yazoo County Unclassifiable/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 1 Designation Classification

Date 2 Type Date Type

Adams County Attainment/Unclassifiable

Alcorn County Attainment/Unclassifiable

Amite County Attainment/Unclassifiable

Attala County Attainment/Unclassifiable

Benton County Attainment/Unclassifiable

Bolivar County Attainment/Unclassifiable

Calhoun County Attainment/Unclassifiable

Carroll County Attainment/Unclassifiable

Chickasaw County Attainment/Unclassifiable

Choctaw County Attainment/Unclassifiable

Claiborne County Attainment/Unclassifiable

Clarke County Attainment/Unclassifiable

Clay County Attainment/Unclassifiable

Coahoma County Attainment/Unclassifiable

Copiah County Attainment/Unclassifiable

Covington County Attainment/Unclassifiable

DeSoto County Attainment/Unclassifiable

Forrest County Attainment/Unclassifiable

Franklin County Attainment/Unclassifiable

George County Attainment/Unclassifiable

Greene County Attainment/Unclassifiable

Grenada County Attainment/Unclassifiable

Hancock County Attainment/Unclassifiable

Harrison County Attainment/Unclassifiable

Hinds County Attainment/Unclassifiable

Holmes County Attainment/Unclassifiable

Humphreys County Attainment/Unclassifiable

Issaquena County Attainment/Unclassifiable

Itawamba County Attainment/Unclassifiable

Jackson County Attainment/Unclassifiable

Jasper County Attainment/Unclassifiable

Jefferson County Attainment/Unclassifiable

Jefferson Davis County Attainment/Unclassifiable

Jones County Attainment/Unclassifiable

Kemper County Attainment/Unclassifiable

Lafayette County Attainment/Unclassifiable

Lamar County Attainment/Unclassifiable

Lauderdale County Attainment/Unclassifiable

Lawrence County Attainment/Unclassifiable

Leake County Attainment/Unclassifiable

Lee County Attainment/Unclassifiable

Leflore County Attainment/Unclassifiable

Lincoln County Attainment/Unclassifiable

Lowndes County Attainment/Unclassifiable

Madison County Attainment/Unclassifiable

Marion County Attainment/Unclassifiable

Marshall County Attainment/Unclassifiable

Monroe County Attainment/Unclassifiable

Montgomery County Attainment/Unclassifiable

Neshoba County Attainment/Unclassifiable

Newton County Attainment/Unclassifiable

Noxubee County Attainment/Unclassifiable

Oktibbeha County Attainment/Unclassifiable

Panola County Attainment/Unclassifiable

Pearl River County Attainment/Unclassifiable

Perry County Attainment/Unclassifiable

Pike County Attainment/Unclassifiable

Pontotoc County Attainment/Unclassifiable

Prentiss County Attainment/Unclassifiable

Quitman County Attainment/Unclassifiable

Rankin County Attainment/Unclassifiable

Scott County Attainment/Unclassifiable

Sharkey County Attainment/Unclassifiable

Simpson County Attainment/Unclassifiable

Smith County Attainment/Unclassifiable

Stone County Attainment/Unclassifiable

Sunflower County Attainment/Unclassifiable

Tallahatchie County Attainment/Unclassifiable

Tate County Attainment/Unclassifiable

Tippah County Attainment/Unclassifiable

Tishomingo County Attainment/Unclassifiable

Tunica County Attainment/Unclassifiable

Union County Attainment/Unclassifiable

Walthall County Attainment/Unclassifiable

Warren County Attainment/Unclassifiable

Washington County Attainment/Unclassifiable

Wayne County Attainment/Unclassifiable

Webster County Attainment/Unclassifiable

Wilkinson County Attainment/Unclassifiable

Winston County Attainment/Unclassifiable

Yalobusha County Attainment/Unclassifiable

Yazoo County Attainment/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 a

Date 1 Type

Whole State Unclassifiable/Attainment.

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

1 December 31, 2011 unless otherwise noted.