Regulations last checked for updates: Feb 10, 2026

Title 40 - Protection of Environment last revised: Dec 22, 2026
All TitlesTitle 40Chapter IPart 81Subpart C - Subpart C—Section 107 Attainment Status Designations
View all text of Subpart C [§ 81.300 - § 81.356]
§ 81.319 - Louisiana.

Louisiana—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
AQCR 019X
AQCR 022X
AQCR 106X

Louisiana—2010 Sulfur Dioxide NAAQS

[Primary]

Designated area 1 Designation
Date 2 Type
Evangeline Parish (Partial)Nonattainment.
Portion of Evangeline Parish bounded by:
570250m E, 3400300m N
570250m E, 3403300m N
572400m E, 3403300m N
572400m E, 3400300m N
NAD83 15R
St. Bernard Parish, LA10/4/2013Nonattainment.
Calcasieu Parish, LA9/12/2016Unclassifiable.
St. Mary ParishUnclassifiable.
Acadia ParishAttainment/Unclassifiable.
Allen ParishAttainment/Unclassifiable.
Assumption ParishAttainment/Unclassifiable.
Avoyelles ParishAttainment/Unclassifiable.
Beauregard ParishAttainment/Unclassifiable.
Bienville ParishAttainment/Unclassifiable.
Bossier ParishAttainment/Unclassifiable.
Caddo ParishAttainment/Unclassifiable.
Caldwell ParishAttainment/Unclassifiable.
Cameron ParishAttainment/Unclassifiable.
Catahoula ParishAttainment/Unclassifiable.
Claiborne ParishAttainment/Unclassifiable.
Concordia ParishAttainment/Unclassifiable.
De Soto Parish9/12/2016Attainment/Unclassifiable.
East Baton Rouge Parish4/30/2021Attainment/Unclassifiable.
East Carroll ParishAttainment/Unclassifiable.
East Feliciana ParishAttainment/Unclassifiable.
Evangeline Parish (part) (remainder)Attainment/Unclassifiable.
Franklin ParishAttainment/Unclassifiable.
Grant ParishAttainment/Unclassifiable.
Iberia ParishAttainment/Unclassifiable.
Iberville ParishAttainment/Unclassifiable.
Jackson ParishAttainment/Unclassifiable.
Jefferson ParishAttainment/Unclassifiable.
Jefferson Davis ParishAttainment/Unclassifiable.
Lafayette ParishAttainment/Unclassifiable.
Lafourche ParishAttainment/Unclassifiable.
LaSalle ParishAttainment/Unclassifiable.
Lincoln ParishAttainment/Unclassifiable.
Livingston ParishAttainment/Unclassifiable.
Madison ParishAttainment/Unclassifiable.
Morehouse ParishAttainment/Unclassifiable.
Natchitoches ParishAttainment/Unclassifiable.
Orleans ParishAttainment/Unclassifiable.
Ouachita ParishAttainment/Unclassifiable.
Plaquemines ParishAttainment/Unclassifiable.
Point CoupeeAttainment/Unclassifiable.
Rapides ParishAttainment/Unclassifiable.
Red River ParishAttainment/Unclassifiable.
Richland ParishAttainment/Unclassifiable.
Sabine ParishAttainment/Unclassifiable.
St. Charles Parish4/30/2021Attainment/Unclassifiable.
St. Helena ParishAttainment/Unclassifiable.
St. James Parish4/30/2021Attainment/Unclassifiable.
St. John the Baptist ParishAttainment/Unclassifiable.
St. Landry ParishAttainment/Unclassifiable.
St. Martin ParishAttainment/Unclassifiable.
St. Mary ParishAttainment/Unclassifiable.
St. Tammany ParishAttainment/Unclassifiable.
Tangipahoa ParishAttainment/Unclassifiable.
Tensas ParishAttainment/Unclassifiable.
Terrebonne ParishAttainment/Unclassifiable.
Union ParishAttainment/Unclassifiable.
Vermilion ParishAttainment/Unclassifiable.
Vernon ParishAttainment/Unclassifiable.
Washington ParishAttainment/Unclassifiable.
Webster ParishAttainment/Unclassifiable.
West Baton Rouge Parish4/30/2021Attainment/Unclassifiable.
West Carroll ParishAttainment/Unclassifiable.
Winn ParishAttainment/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.

Louisiana—Carbon Monoxide

Designated area Designation Classification
Date 1 Type Date 1 Type
AQCR 019 Monroe-El Dorado InterstateUnclassifiable/Attainment
Caldwell Parish
Catahoula Parish
Concordia Parish
East Carroll Parish
Franklin Parish
Grant Parish
La Salle Parish
Madison Parish
Morehouse Parish
Ouachita Parish
Richland Parish
Tensas Parish
Union Parish
West Carroll Parish
AQCR 022 Shreveport-Texarkana-Tyler InterstateUnclassifiable/Attainment
Avoyelles Parish
Bienville Parish
Bossier Parish
Caddo Parish
Claiborne Parish
De Soto Parish
Jackson Parish
Lincoln Parish
Natchitoches Parish
Rapides Parish
Red River Parish
Sabine Parish
Vernon Parish
Webster Parish
Winn Parish
AQCR 106 Southern Louisiana-Southeast Texas InterstateUnclassifiable/Attainment
Acadia Parish
Allen Parish
Ascension Parish
Assumption Parish
Beauregard Parish
Calcasieu Parish
Cameron Parish
East Baton Rouge Parish
East Feliciana Parish
Evangeline Parish
Iberia Parish
Iberville Parish
Jefferson Davis Parish
Jefferson Parish
Lafayette Parish
Lafourche Parish
Livingston Parish
Orleans Parish
Plaquemines Parish
Pointe Coupee Parish
St. Bernard Parish
St. Charles Parish
St. Helena Parish
St. James Parish
St. John the Baptist Parish
St. Landry Parish
St. Martin Parish
St. Mary Parish
St. Tammany Parish
Tangipahoa Parish
Terrebonne Parish
Vermilion Parish
Washington Parish
West Baton Route Parish
West Feliciana Parish

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

Louisiana—1978 Lead NAAQS.

Designated area Designation Classification
Date Type Date Type
East Baton Rouge Parish1/6/1992Unclassifiable
Rest of State Not Designated

Louisiana—Ozone (1-Hour Standard) 2

Designated area Designation Classification
Date 1 Type Date 1 Type
Baton Rouge Area:
Ascension Parish11/15/1990Nonattainment6/23/2003Severe.
East Baton Rouge Parish11/15/1990Nonattainment6/23/2003Severe.
Iberville Parish11/15/1990Nonattainment6/23/2003Severe.
Livingston Parish11/15/1990Nonattainment6/23/2003Severe.
West Baton Rouge Parish11/15/1990Nonattainment6/23/2003Severe.
Beauregard Parish Area:
Beauregard ParishAttainment
Grant Parish Area:
Grant ParishAttainment
Lafayette Area:
Lafayette ParishAttainment
Lafourche Parish Area:
Lafourche Parish2/25/2002Attainment
Lake Charles Area:
Calcasieu ParishAttainment
New Orleans Area:
Jefferson ParishAttainment
Orleans ParishAttainment
St. Bernard ParishAttainment
St. Charles ParishAttainment
Pointe Coupee Area:
Pointe Coupee ParishAttainment
St. James Parish Area:
St. James ParishAttainment
St. Mary Parish Area:
St. Mary ParishAttainment
AQCR 019 Monroe-El Dorado InterstateUnclassifiable/Attainment
Caldwell Parish
Catahoula Parish
Concordia Parish
East Carroll Parish
Franklin Parish
La Salle Parish
Madison Parish
Morehouse Parish
Ouachita Parish
Richland Parish
Tensas Parish
Union Parish
West Carroll Parish
AQCR 022 Shreveport-Texarkana-Tyler InterstateUnclassifiable/Attainment
Avoyelles Parish
Bienville Parish
Bossier Parish
Caddo Parish
Claiborne Parish
De Soto Parish
Jackson Parish
Lincoln Parish
Natchitoches Parish
Rapides Parish
Red River Parish
Sabine Parish
Vernon Parish
Webster Parish
Winn Parish
AQCR 106 Southern Louisiana-Southeast Texas InterstateUnclassifiable/Attainment
Acadia Parish
Allen Parish
Assumption Parish
Cameron Parish
East Feliciana Parish
Evangeline Parish
Iberia Parish
Jefferson Davis Parish
Plaquemines Parish
St. Helena Parish
St. John the Baptist Parish
St. Landry Parish
St. Martin Parish
St. Tammany Parish
Tangipahoa Parish
Terrebonne Parish
Vermilion Parish
Washington Parish
West Feliciana Parish

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 Louisiana. The Lafayette, Lake Charles, New Orleans, Pointe Coupee Parish, Beauregard Par, Grant Par, LaFourche Par, St James Par, and St Mary Par areas are maintenance areas for the 1-hour NAAQS for purposes of 40 CFR part 51 subpart X.

Louisiana—1997 Annual PM2.5 NAAQS

[Primary and Secondary]

Designated area Designation a Classification
Date 1 Type Date Type
AQCR 019 Monroe-El Dorado Interstate:
Caldwell ParishUnclassifiable/Attainment.
Catahoula ParishUnclassifiable/Attainment.
Concordia ParishUnclassifiable/Attainment.
East Carroll ParishUnclassifiable/Attainment.
Franklin ParishUnclassifiable/Attainment.
La Salle ParishUnclassifiable/Attainment.
Madison ParishUnclassifiable/Attainment.
Morehouse ParishUnclassifiable/Attainment.
Ouachita ParishUnclassifiable/Attainment.
Richland ParishUnclassifiable/Attainment.
Tensas ParishUnclassifiable/Attainment.
Union ParishUnclassifiable/Attainment.
West Carroll ParishUnclassifiable/Attainment.
AQCR 022 Shreveport-Texarkana-Tyler Interstate:Unclassifiable/Attainment.
Bienville ParishUnclassifiable/Attainment.
Bossier ParishUnclassifiable/Attainment.
Caddo ParishUnclassifiable/Attainment.
Claiborne ParishUnclassifiable/Attainment.
De Soto ParishUnclassifiable/Attainment.
Jackson ParishUnclassifiable/Attainment.
Lincoln ParishUnclassifiable/Attainment.
Natchitoches ParishUnclassifiable/Attainment.
Red River ParishUnclassifiable/Attainment.
Sabine ParishUnclassifiable/Attainment.
Webster ParishUnclassifiable/Attainment.
Winn ParishUnclassifiable/Attainment.
AQCR 106 S. Louisiana-S.E. Texas Interstate:Unclassifiable/Attainment.
Acadia ParishUnclassifiable/Attainment.
Allen ParishUnclassifiable/Attainment.
Ascension ParishUnclassifiable/Attainment.
Assumption ParishUnclassifiable/Attainment.
Avoyelles ParishUnclassifiable/Attainment.
Beauregard ParishUnclassifiable/Attainment.
Calcasieu ParishUnclassifiable/Attainment.
Cameron ParishUnclassifiable/Attainment.
East Baton Rouge ParishUnclassifiable/Attainment.
East Feliciana ParishUnclassifiable/Attainment.
Evangeline ParishUnclassifiable/Attainment.
Grant ParishUnclassifiable/Attainment.
Iberia ParishUnclassifiable/Attainment.
Iberville ParishUnclassifiable/Attainment.
Jefferson Davis ParishUnclassifiable/Attainment.
Jefferson ParishUnclassifiable/Attainment.
Lafayette ParishUnclassifiable/Attainment.
Lafourche ParishUnclassifiable/Attainment.
Livingston ParishUnclassifiable/Attainment.
Orleans ParishUnclassifiable/Attainment.
Plaquemines ParishUnclassifiable/Attainment.
Pointe Coupee ParishUnclassifiable/Attainment.
Rapides ParishUnclassifiable/Attainment.
St. Bernard ParishUnclassifiable/Attainment.
St. Charles ParishUnclassifiable/Attainment.
St. Helena ParishUnclassifiable/Attainment.
St. James ParishUnclassifiable/Attainment.
St. John the Baptist ParishUnclassifiable/Attainment.
St. Landry ParishUnclassifiable/Attainment.
St. Martin ParishUnclassifiable/Attainment.
St. Tammany ParishUnclassifiable/Attainment.
Tangipahoa ParishUnclassifiable/Attainment.
Terrebonne ParishUnclassifiable/Attainment.
Vermilion ParishUnclassifiable/Attainment.
Vernon ParishUnclassifiable/Attainment.
Washington ParishUnclassifiable/Attainment.
West Baton Rouge ParishUnclassifiable/Attainment.
West Feliciana ParishUnclassifiable/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.

Louisiana—2012 Annual PM2.5 NAAQS

[Primary]

Designated area 1 Designation Classification
Date 2 Type Date 2 Type
AQCR 019 Monroe-El Dorado Interstate:
Caldwell ParishUnclassifiable/Attainment
Catahoula ParishUnclassifiable/Attainment
Concordia ParishUnclassifiable/Attainment
East Carroll ParishUnclassifiable/Attainment
Franklin ParishUnclassifiable/Attainment
La Salle ParishUnclassifiable/Attainment
Madison ParishUnclassifiable/Attainment
Morehouse ParishUnclassifiable/Attainment
Ouachita ParishUnclassifiable/Attainment
Richland ParishUnclassifiable/Attainment
Tensas ParishUnclassifiable/Attainment
Union ParishUnclassifiable/Attainment
West Carroll ParishUnclassifiable/Attainment
AQCR 022 Shreveport-Texarkana-Tyler Interstate:
Bienville ParishUnclassifiable/Attainment
Bossier ParishUnclassifiable/Attainment
Caddo ParishUnclassifiable/Attainment
Claiborne ParishUnclassifiable/Attainment
De Soto ParishUnclassifiable/Attainment
Jackson ParishUnclassifiable/Attainment
Lincoln ParishUnclassifiable/Attainment
Natchitoches ParishUnclassifiable/Attainment
Red River ParishUnclassifiable/Attainment
Sabine ParishUnclassifiable/Attainment
Webster ParishUnclassifiable/Attainment
Winn ParishUnclassifiable/Attainment
AQCR 106 S. Louisiana-S.E. Texas Interstate:
Acadia ParishUnclassifiable/Attainment
Allen ParishUnclassifiable/Attainment
Ascension ParishUnclassifiable/Attainment
Assumption ParishUnclassifiable/Attainment
Avoyelles ParishUnclassifiable/Attainment
Beauregard ParishUnclassifiable/Attainment
Calcasieu ParishUnclassifiable/Attainment
Cameron ParishUnclassifiable/Attainment
East Baton Rouge ParishUnclassifiable/Attainment
East Feliciana ParishUnclassifiable/Attainment
Evangeline ParishUnclassifiable/Attainment
Grant ParishUnclassifiable/Attainment
Iberia ParishUnclassifiable/Attainment
Iberville ParishUnclassifiable/Attainment
Jefferson Davis ParishUnclassifiable/Attainment
Jefferson ParishUnclassifiable/Attainment
Lafayette ParishUnclassifiable/Attainment
Lafourche ParishUnclassifiable/Attainment
Livingston ParishUnclassifiable/Attainment
Orleans ParishUnclassifiable/Attainment
Plaquemines ParishUnclassifiable/Attainment
Pointe Coupee ParishUnclassifiable/Attainment
Rapides ParishUnclassifiable/Attainment
St. Bernard ParishUnclassifiable/Attainment
St. Charles ParishUnclassifiable/Attainment
St. Helena ParishUnclassifiable/Attainment
St. James ParishUnclassifiable/Attainment
St. John the Baptist ParishUnclassifiable/Attainment
St. Landry ParishUnclassifiable/Attainment
St. Martin ParishUnclassifiable/Attainment
St. Tammany ParishUnclassifiable/Attainment
Tangipahoa ParishUnclassifiable/Attainment
Terrebonne ParishUnclassifiable/Attainment
Vermilion ParishUnclassifiable/Attainment
Vernon ParishUnclassifiable/Attainment
Washington ParishUnclassifiable/Attainment
West Baton Rouge ParishUnclassifiable/Attainment
West Feliciana ParishUnclassifiable/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.

Louisiana—1997 24-Hour PM2.5 NAAQS

[Primary and Secondary]

Designated area Designation a Classification
Date 1 Type Date Type
AQCR 019 Monroe-El Dorado Interstate:
Caldwell ParishUnclassifiable/Attainment.
Catahoula ParishUnclassifiable/Attainment.
Concordia ParishUnclassifiable/Attainment.
East Carroll ParishUnclassifiable/Attainment.
Franklin ParishUnclassifiable/Attainment.
La Salle ParishUnclassifiable/Attainment.
Madison ParishUnclassifiable/Attainment.
Morehouse ParishUnclassifiable/Attainment.
Ouachita ParishUnclassifiable/Attainment.
Richland ParishUnclassifiable/Attainment.
Tensas ParishUnclassifiable/Attainment.
Union ParishUnclassifiable/Attainment.
West Carroll ParishUnclassifiable/Attainment.
AQCR 022 Shreveport-Texarkana-Tyler Interstate:
Bienville ParishUnclassifiable/Attainment.
Bossier ParishUnclassifiable/Attainment.
Caddo ParishUnclassifiable/Attainment.
Claiborne ParishUnclassifiable/Attainment.
De Soto ParishUnclassifiable/Attainment.
Jackson ParishUnclassifiable/Attainment.
Lincoln ParishUnclassifiable/Attainment.
Natchitoches ParishUnclassifiable/Attainment.
Red River ParishUnclassifiable/Attainment.
Sabine ParishUnclassifiable/Attainment.
Webster ParishUnclassifiable/Attainment.
Winn ParishUnclassifiable/Attainment.
AQCR 106 S. Louisiana-S.E. Texas Interstate:
Acadia ParishUnclassifiable/Attainment.
Allen ParishUnclassifiable/Attainment.
Ascension ParishUnclassifiable/Attainment.
Assumption ParishUnclassifiable/Attainment.
Avoyelles ParishUnclassifiable/Attainment.
Beauregard ParishUnclassifiable/Attainment.
Calcasieu ParishUnclassifiable/Attainment.
Cameron ParishUnclassifiable/Attainment.
East Baton Rouge ParishUnclassifiable/Attainment.
East Feliciana ParishUnclassifiable/Attainment.
Evangeline ParishUnclassifiable/Attainment.
Grant ParishUnclassifiable/Attainment.
Iberia ParishUnclassifiable/Attainment.
Iberville ParishUnclassifiable/Attainment.
Jefferson Davis ParishUnclassifiable/Attainment.
Jefferson ParishUnclassifiable/Attainment.
Lafayette ParishUnclassifiable/Attainment.
Lafourche ParishUnclassifiable/Attainment.
Livingston ParishUnclassifiable/Attainment.
Orleans ParishUnclassifiable/Attainment.
Plaquemines ParishUnclassifiable/Attainment.
Pointe Coupee ParishUnclassifiable/Attainment.
Rapides ParishUnclassifiable/Attainment.
St. Bernard ParishUnclassifiable/Attainment.
St. Charles ParishUnclassifiable/Attainment.
St. Helena ParishUnclassifiable/Attainment.
St. James ParishUnclassifiable/Attainment.
St. John the Baptist ParishUnclassifiable/Attainment.
St. Landry ParishUnclassifiable/Attainment.
St. Martin ParishUnclassifiable/Attainment.
St. Tammany ParishUnclassifiable/Attainment.
Tangipahoa ParishUnclassifiable/Attainment.
Terrebonne ParishUnclassifiable/Attainment.
Vermilion ParishUnclassifiable/Attainment.
Vernon ParishUnclassifiable/Attainment.
Washington ParishUnclassifiable/Attainment.
West Baton Rouge ParishUnclassifiable/Attainment.
West Feliciana ParishUnclassifiable/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.

Louisiana—2006 24-Hour PM2.5 NAAQS

[Primary and Secondary]

Designated area Designation a Classification
Date 1 Type Date Type
AQCR 019 Monroe-El Dorado Interstate:
Caldwell ParishUnclassifiable/Attainment.
Catahoula ParishUnclassifiable/Attainment.
Concordia ParishUnclassifiable/Attainment.
East Carroll ParishUnclassifiable/Attainment.
Franklin ParishUnclassifiable/Attainment.
La Salle ParishUnclassifiable/Attainment.
Madison ParishUnclassifiable/Attainment.
Morehouse ParishUnclassifiable/Attainment.
Ouachita ParishUnclassifiable/Attainment.
Richland ParishUnclassifiable/Attainment.
Tensas ParishUnclassifiable/Attainment.
Union ParishUnclassifiable/Attainment.
West Carroll ParishUnclassifiable/Attainment.
AQCR 022 Shreveport-Texarkana-Tyler Interstate:
Bienville ParishUnclassifiable/Attainment.
Bossier ParishUnclassifiable/Attainment.
Caddo ParishUnclassifiable/Attainment.
Claiborne ParishUnclassifiable/Attainment.
De Soto ParishUnclassifiable/Attainment.
Jackson ParishUnclassifiable/Attainment.
Lincoln ParishUnclassifiable/Attainment.
Natchitoches ParishUnclassifiable/Attainment.
Red River ParishUnclassifiable/Attainment.
Sabine ParishUnclassifiable/Attainment.
Webster ParishUnclassifiable/Attainment.
Winn ParishUnclassifiable/Attainment.
AQCR 106 S. Louisiana-S.E. Texas Interstate:
Acadia ParishUnclassifiable/Attainment.
Allen ParishUnclassifiable/Attainment.
Ascension ParishUnclassifiable/Attainment.
Assumption ParishUnclassifiable/Attainment.
Avoyelles ParishUnclassifiable/Attainment.
Beauregard ParishUnclassifiable/Attainment.
Calcasieu ParishUnclassifiable/Attainment.
Cameron ParishUnclassifiable/Attainment.
East Baton Rouge ParishUnclassifiable/Attainment.
East Feliciana ParishUnclassifiable/Attainment.
Evangeline ParishUnclassifiable/Attainment.
Grant ParishUnclassifiable/Attainment.
Iberia ParishUnclassifiable/Attainment.
Iberville ParishUnclassifiable/Attainment.
Jefferson Davis ParishUnclassifiable/Attainment.
Jefferson ParishUnclassifiable/Attainment.
Lafayette ParishUnclassifiable/Attainment.
Lafourche ParishUnclassifiable/Attainment.
Livingston ParishUnclassifiable/Attainment.
Orleans ParishUnclassifiable/Attainment.
Plaquemines ParishUnclassifiable/Attainment.
Pointe Coupee ParishUnclassifiable/Attainment.
Rapides ParishUnclassifiable/Attainment.
St. Bernard ParishUnclassifiable/Attainment.
St. Charles ParishUnclassifiable/Attainment.
St. Helena ParishUnclassifiable/Attainment.
St. James ParishUnclassifiable/Attainment.
St. John the Baptist ParishUnclassifiable/Attainment.
St. Landry ParishUnclassifiable/Attainment.
St. Martin ParishUnclassifiable/Attainment.
St. Tammany ParishUnclassifiable/Attainment.
Tangipahoa ParishUnclassifiable/Attainment.
Terrebonne ParishUnclassifiable/Attainment.
Vermilion ParishUnclassifiable/Attainment.
Vernon ParishUnclassifiable/Attainment.
Washington ParishUnclassifiable/Attainment.
West Baton Rouge ParishUnclassifiable/Attainment.
West Feliciana ParishUnclassifiable/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.

Louisiana—NO2 (1971 Annual Standard)

Designated area Does not meet primary standards Cannot be classified or better than national standards
AQCR 019X
AQCR 022X
AQCR 106X

Louisiana—NO2 (2010 1-Hour Standard)

Designated area Designation a
Date 1 Type
Acadia ParishUnclassifiable/Attainment.
Allen ParishUnclassifiable/Attainment.
Ascension ParishUnclassifiable/Attainment.
Assumption ParishUnclassifiable/Attainment.
Avoyelles ParishUnclassifiable/Attainment.
Beauregard ParishUnclassifiable/Attainment.
Bienville ParishUnclassifiable/Attainment.
Bossier ParishUnclassifiable/Attainment.
Caddo ParishUnclassifiable/Attainment.
Calcasieu ParishUnclassifiable/Attainment.
Caldwell ParishUnclassifiable/Attainment.
Cameron ParishUnclassifiable/Attainment.
Catahoula ParishUnclassifiable/Attainment.
Claiborne ParishUnclassifiable/Attainment.
Concordia ParishUnclassifiable/Attainment.
De Soto ParishUnclassifiable/Attainment.
East Baton Rouge ParishUnclassifiable/Attainment.
East Carroll ParishUnclassifiable/Attainment.
East Feliciana ParishUnclassifiable/Attainment.
Evangeline ParishUnclassifiable/Attainment.
Franklin ParishUnclassifiable/Attainment.
Grant ParishUnclassifiable/Attainment.
Iberia ParishUnclassifiable/Attainment.
Iberville ParishUnclassifiable/Attainment.
Jackson ParishUnclassifiable/Attainment.
Jefferson Davis ParishUnclassifiable/Attainment.
Jefferson ParishUnclassifiable/Attainment.
La Salle ParishUnclassifiable/Attainment.
Lafayette ParishUnclassifiable/Attainment.
Lafourche ParishUnclassifiable/Attainment.
Lincoln ParishUnclassifiable/Attainment.
Livingston ParishUnclassifiable/Attainment.
Madison ParishUnclassifiable/Attainment.
Morehouse ParishUnclassifiable/Attainment.
Natchitoches ParishUnclassifiable/Attainment.
Orleans ParishUnclassifiable/Attainment.
Ouachita ParishUnclassifiable/Attainment.
Plaquemines ParishUnclassifiable/Attainment.
Pointe Coupee ParishUnclassifiable/Attainment.
Rapides ParishUnclassifiable/Attainment.
Red River ParishUnclassifiable/Attainment.
Richland ParishUnclassifiable/Attainment.
Sabine ParishUnclassifiable/Attainment.
St. Bernard ParishUnclassifiable/Attainment.
St. Charles ParishUnclassifiable/Attainment.
St. Helena ParishUnclassifiable/Attainment.
St. James ParishUnclassifiable/Attainment.
St. John the Baptist ParishUnclassifiable/Attainment.
St. Landry ParishUnclassifiable/Attainment.
St. Martin ParishUnclassifiable/Attainment.
St. Tammany ParishUnclassifiable/Attainment.
Tangipahoa ParishUnclassifiable/Attainment.
Terrebonne ParishUnclassifiable/Attainment.
Tensas ParishUnclassifiable/Attainment.
Vermilion ParishUnclassifiable/Attainment.
Vernon ParishUnclassifiable/Attainment.
Union ParishUnclassifiable/Attainment.
Washington ParishUnclassifiable/Attainment.
Webster ParishUnclassifiable/Attainment.
West Baton Rouge ParishUnclassifiable/Attainment.
West Carroll ParishUnclassifiable/Attainment.
West Feliciana ParishUnclassifiable/Attainment.
Winn ParishUnclassifiable/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.

Louisiana—PM-10

Designated area Designation Classification
Date Type Date Type
AQCR 01911/15/1990Unclassifiable
AQCR 02211/15/1990Unclassifiable
AQCR 10611/15/1990Unclassifiable

Louisiana—1997 8-Hour Ozone NAAQS

[Primary and Secondary]

Designated area Designation a Category/classification
Date 1 Type Date 1 Type
Baton Rouge Area:
Ascension Parish( 2)Attainment
East Baton Rouge Parish( 2)Attainment
Iberville Parish( 2)Attainment
Livingston Parish( 2)Attainment
West Baton Rouge Parish( 2)Attainment
Beauregard Parish Area, LA:
Beauregard ParishUnclassifiable/Attainment
Grant Parish Area:
Grant ParishUnclassifiable/Attainment
Lafayette Area:
Lafayette ParishUnclassifiable/Attainment
Lafourche Parish Area:
Lafourche ParishUnclassifiable/Attainment
Lake Charles Area:
Calcasieu ParishUnclassifiable/Attainment
New Orleans Area:
Jefferson ParishUnclassifiable/Attainment
Orleans ParishUnclassifiable/Attainment
St. Bernard ParishUnclassifiable/Attainment
St. Charles ParishUnclassifiable/Attainment
Pointe Coupee Area:
Pointe Coupee ParishUnclassifiable/Attainment
St. James Parish Area:
St. James ParishUnclassifiable/Attainment
St. Mary Parish Area:
St. Mary ParishUnclassifiable/Attainment
AQCR 019 Monroe-El Dorado InterstateUnclassifiable/Attainment
Caldwell Parish
Catahoula Parish
Concordia Parish
East Carroll Parish
Franklin Parish
La Salle Parish
Madison Parish
Morehouse Parish
Ouachita Parish
Richland Parish
Tensas Parish
Union Parish
West Carroll Parish
AQCR 022 Shreveport-Texarkana-Tyler InterstateUnclassifiable/Attainment
Bienville Parish
Bossier Parish
Caddo Parish
Claiborne Parish
De Soto Parish
Jackson Parish
Lincoln Parish
Natchitoches Parish
Red River Parish
Sabine Parish
Webster Parish
Winn Parish
AQCR 106 S. Louisiana-S.E. Texas Interstate:
St. John the Baptist ParishUnclassifiable/Attainment
AQCR 106 S. Louisiana-S.E. Texas InterstateUnclassifiable/Attainment
Acadia Parish
Allen Parish
Assumption Parish
Avoyelles Parish
Cameron Parish
East Feliciana Parish
Evangeline Parish
Iberia Parish
Jefferson Davis Parish
Plaquemines Parish
Rapides Parish
St. Helena Parish
St. Landry Parish
St. Martin Parish
St. Tammany Parish
Tangipahoa Parish
Terrebonne Parish
Vermilion Parish
Vernon Parish
Washington Parish
West Feliciana Parish

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

1 This date is June 15, 2004, unless otherwise noted.

2 Effective December 30, 2011.

Louisiana—2008 8-Hour Ozone NAAQS

[Primary and Secondary]

Designated area Designation Classification
Date 1 Type Date 1 Type
Baton Rouge, LA 212/27/16, 81 FR 95052Attainment12/27/16
Ascension Parish
East Baton Rouge Parish
Iberville Parish
Livingston Parish
West Baton Rouge Parish
AQCR 019 Monroe-El Dorado Interstate: 3
Caldwell ParishUnclassifiable/Attainment
Catahoula ParishUnclassifiable/Attainment
Concordia ParishUnclassifiable/Attainment
East Carroll ParishUnclassifiable/Attainment
Franklin ParishUnclassifiable/Attainment
La Salle ParishUnclassifiable/Attainment
Madison ParishUnclassifiable/Attainment
Morehouse ParishUnclassifiable/Attainment
Ouachita ParishUnclassifiable/Attainment
Richland ParishUnclassifiable/Attainment
Tensas ParishUnclassifiable/Attainment
Union ParishUnclassifiable/Attainment
West Carroll ParishUnclassifiable/Attainment
AQCR 022 Shreveport-Texarkana-Tyler Interstate: 3
Bienville ParishUnclassifiable/Attainment
Bossier ParishUnclassifiable/Attainment
Caddo ParishUnclassifiable/Attainment
Claiborne ParishUnclassifiable/Attainment
De Soto ParishUnclassifiable/Attainment
Jackson ParishUnclassifiable/Attainment
Lincoln ParishUnclassifiable/Attainment
Natchitoches Parish Unclassifiable/Attainment
Red River ParishUnclassifiable/Attainment
Sabine ParishUnclassifiable/Attainment
Webster ParishUnclassifiable/Attainment
Winn ParishUnclassifiable/Attainment
AQCR 106 S. Louisiana-SE. Texas Interstate: (remainder) 3
Acadia ParishUnclassifiable/Attainment
Allen ParishUnclassifiable/Attainment
Assumption ParishUnclassifiable/Attainment
Avoyelles ParishUnclassifiable/Attainment
Beauregard ParishUnclassifiable/Attainment
Calcasieu ParishUnclassifiable/Attainment
Cameron ParishUnclassifiable/Attainment
East Feliciana ParishUnclassifiable/Attainment
Evangeline ParishUnclassifiable/Attainment
Grant ParishUnclassifiable/Attainment
Iberia ParishUnclassifiable/Attainment
Jefferson Davis ParishUnclassifiable/Attainment
Jefferson ParishUnclassifiable/Attainment
Lafayette ParishUnclassifiable/Attainment
Lafourche ParishUnclassifiable/Attainment
Orleans ParishUnclassifiable/Attainment
Plaquemines ParishUnclassifiable/Attainment
Pointe Coupee ParishUnclassifiable/Attainment
Rapides ParishUnclassifiable/Attainment
St. Bernard ParishUnclassifiable/Attainment
St. Charles ParishUnclassifiable/Attainment
St. Helena ParishUnclassifiable/Attainment
St. James ParishUnclassifiable/Attainment
St. John the Baptist ParishUnclassifiable/Attainment
St. Landry ParishUnclassifiable/Attainment
St. Martin ParishUnclassifiable/Attainment
St. Mary ParishUnclassifiable/Attainment
St. Tammany ParishUnclassifiable/Attainment
Tangipahoa ParishUnclassifiable/Attainment
Terrebonne ParishUnclassifiable/Attainment
Vermilion ParishUnclassifiable/Attainment
Vernon ParishUnclassifiable/Attainment
Washington ParishUnclassifiable/Attainment
West Feliciana ParishUnclassifiable/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.

Louisiana—2015 8-Hour Ozone NAAQS

[Primary and Secondary]

Designated area 1 Designation Classification
Date 2 Type Date 2 Type
Acadia Parish1/16/2018Attainment/Unclassifiable
Allen Parish1/16/2018Attainment/Unclassifiable
Ascension ParishAttainment/Unclassifiable
Assumption ParishAttainment/Unclassifiable
Avoyelles Parish1/16/2018Attainment/Unclassifiable
Beauregard Parish1/16/2018Attainment/Unclassifiable
Bienville Parish1/16/2018Attainment/Unclassifiable
Bossier Parish1/16/2018Attainment/Unclassifiable
Caddo Parish1/16/2018Attainment/Unclassifiable
Calcasieu Parish1/16/2018Attainment/Unclassifiable
Caldwell Parish1/16/2018Attainment/Unclassifiable
Cameron Parish1/16/2018Attainment/Unclassifiable
Catahoula Parish1/16/2018Attainment/Unclassifiable
Claiborne Parish1/16/2018Attainment/Unclassifiable
Concordia Parish1/16/2018Attainment/Unclassifiable
De Soto Parish1/16/2018Attainment/Unclassifiable
East Baton Rouge ParishAttainment/Unclassifiable
East Carroll Parish1/16/2018Attainment/Unclassifiable
East Feliciana ParishAttainment/Unclassifiable
Evangeline Parish1/16/2018Attainment/Unclassifiable
Franklin Parish1/16/2018Attainment/Unclassifiable
Grant Parish1/16/2018Attainment/Unclassifiable
Iberia Parish1/16/2018Attainment/Unclassifiable
Iberville ParishAttainment/Unclassifiable
Jackson Parish1/16/2018Attainment/Unclassifiable
Jefferson Parish1/16/2018Attainment/Unclassifiable
Jefferson Davis Parish1/16/2018Attainment/Unclassifiable
Lafayette Parish1/16/2018Attainment/Unclassifiable
Lafourche Parish1/16/2018Attainment/Unclassifiable
LaSalle Parish1/16/2018Attainment/Unclassifiable
Lincoln Parish1/16/2018Attainment/Unclassifiable
Livingston ParishAttainment/Unclassifiable
Madison Parish1/16/2018Attainment/Unclassifiable
Morehouse Parish1/16/2018Attainment/Unclassifiable
Natchitoches Parish1/16/2018Attainment/Unclassifiable
Orleans Parish1/16/2018Attainment/Unclassifiable
Ouachita Parish1/16/2018Attainment/Unclassifiable
Plaquemines Parish1/16/2018Attainment/Unclassifiable
Pointe Coupee ParishAttainment/Unclassifiable
Rapides Parish1/16/2018Attainment/Unclassifiable
Red River Parish1/16/2018Attainment/Unclassifiable
Richland Parish1/16/2018Attainment/Unclassifiable
Sabine Parish1/16/2018Attainment/Unclassifiable
St. Bernard Parish1/16/2018Attainment/Unclassifiable
St. Charles Parish1/16/2018Attainment/Unclassifiable
St. Helena ParishAttainment/Unclassifiable
St. James ParishAttainment/Unclassifiable
St. John the Baptist Parish1/16/2018Attainment/Unclassifiable
St. Landry Parish1/16/2018Attainment/Unclassifiable
St. Martin Parish1/16/2018Attainment/Unclassifiable
St. Mary Parish1/16/2018Attainment/Unclassifiable
St. Tammany Parish1/16/2018Attainment/Unclassifiable
Tangipahoa Parish1/16/2018Attainment/Unclassifiable
Tensas Parish1/16/2018Attainment/Unclassifiable
Terrebonne Parish1/16/2018Attainment/Unclassifiable
Union Parish1/16/2018Attainment/Unclassifiable
Vermilion Parish1/16/2018Attainment/Unclassifiable
Vernon Parish1/16/2018Attainment/Unclassifiable
Washington Parish1/16/2018Attainment/Unclassifiable
Webster Parish1/16/2018Attainment/Unclassifiable
West Baton Rouge ParishAttainment/Unclassifiable
West Carroll Parish1/16/2018Attainment/Unclassifiable
West Feliciana ParishAttainment/Unclassifiable
Winn Parish1/16/2018Attainment/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 August 3, 2018, unless otherwise noted.

Louisiana—2008 Lead NAAQS

Designated area Designation for the 2008 NAAQS a
Date 1 Type
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 § 81.319, 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 81.319
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