40 CFR 81.304 – Arkansas
Current as of: 2024 | Check for updates
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Arkansas—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 016 | X | |||
| AQCR 017 | X | |||
| AQCR 018 | X | |||
| AQCR 019 | X | |||
| AQCR 020 | X | |||
| AQCR 021 | X | |||
| AQCR 022 | X |
Arkansas—2010 Sulfur Dioxide NAAQS
[Primary]
| Designated area 1 | Designation | |
|---|---|---|
| Date 2 | Type | |
| Arkansas County | Attainment/Unclassifiable. | |
| Ashley County | Attainment/Unclassifiable. | |
| Baxter County | Attainment/Unclassifiable. | |
| Benton County | Attainment/Unclassifiable. | |
| Boone County | Attainment/Unclassifiable. | |
| Bradley County | Attainment/Unclassifiable. | |
| Calhoun County | Attainment/Unclassifiable. | |
| Carroll County | Attainment/Unclassifiable. | |
| Chicot County | Attainment/Unclassifiable. | |
| Clark County | Attainment/Unclassifiable. | |
| Clay County | Attainment/Unclassifiable. | |
| Cleburne County | Attainment/Unclassifiable. | |
| Cleveland County | Attainment/Unclassifiable. | |
| Columbia County | Attainment/Unclassifiable. | |
| Conway County | Attainment/Unclassifiable. | |
| Craighead County | Attainment/Unclassifiable. | |
| Crawford County | Attainment/Unclassifiable. | |
| Crittenden County | Attainment/Unclassifiable. | |
| Cross County | Attainment/Unclassifiable. | |
| Dallas County | Attainment/Unclassifiable. | |
| Desha County | Attainment/Unclassifiable. | |
| Drew County | Attainment/Unclassifiable. | |
| Faulkner County | Attainment/Unclassifiable. | |
| Franklin County | Attainment/Unclassifiable. | |
| Fulton County | Attainment/Unclassifiable. | |
| Garland County | Attainment/Unclassifiable. | |
| Grant County | Attainment/Unclassifiable. | |
| Greene County | Attainment/Unclassifiable. | |
| Hempstead County | Attainment/Unclassifiable. | |
| Hot Spring County | Attainment/Unclassifiable. | |
| Howard County | Attainment/Unclassifiable. | |
| Independence County | 4/12/19 | Attainment/Unclassifiable. |
| Izard County | Attainment/Unclassifiable. | |
| Jackson County | Attainment/Unclassifiable. | |
| Jefferson County | 9/12/16 | Attainment/Unclassifiable. |
| Johnson County | Attainment/Unclassifiable. | |
| Lafayette County | Attainment/Unclassifiable. | |
| Lawrence County | Attainment/Unclassifiable. | |
| Lee County | Attainment/Unclassifiable. | |
| Lincoln County | Attainment/Unclassifiable. | |
| Little River County | Attainment/Unclassifiable. | |
| Logan County | Attainment/Unclassifiable. | |
| Lonoke County | Attainment/Unclassifiable. | |
| Madison County | Attainment/Unclassifiable. | |
| Marion County | Attainment/Unclassifiable. | |
| Miller County | Attainment/Unclassifiable. | |
| Mississippi County | Attainment/Unclassifiable. | |
| Monroe County | Attainment/Unclassifiable. | |
| Montgomery County | Attainment/Unclassifiable. | |
| Nevada County | Attainment/Unclassifiable. | |
| Newton County | Attainment/Unclassifiable. | |
| Ouachita County | Attainment/Unclassifiable. | |
| Perry County | Attainment/Unclassifiable. | |
| Phillips County | Attainment/Unclassifiable. | |
| Pike County | Attainment/Unclassifiable. | |
| Poinsett County | Attainment/Unclassifiable. | |
| Polk County | Attainment/Unclassifiable. | |
| Pope County | Attainment/Unclassifiable. | |
| Prairie County | Attainment/Unclassifiable. | |
| Pulaski County | Attainment/Unclassifiable. | |
| Randolph County | Attainment/Unclassifiable. | |
| St. Francis County | Attainment/Unclassifiable. | |
| Saline County | Attainment/Unclassifiable. | |
| Scott County | Attainment/Unclassifiable. | |
| Searcy County | Attainment/Unclassifiable. | |
| Sebastian County | Attainment/Unclassifiable. | |
| Sevier County | Attainment/Unclassifiable. | |
| Sharp County | Attainment/Unclassifiable. | |
| Stone County | Attainment/Unclassifiable. | |
| Union County | Attainment/Unclassifiable. | |
| Van Buren County | Attainment/Unclassifiable. | |
| Washington County | Attainment/Unclassifiable. | |
| White County | Attainment/Unclassifiable. | |
| Woodruff County | Attainment/Unclassifiable. | |
| Yell 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.
Arkansas—Carbon Monoxide
| Designated Area | Designation | Classification | ||
|---|---|---|---|---|
| Date 1 | Type | Date 1 | Type | |
| AQCR 016 Central Arkansas Intrastate | Unclassifiable/Attainment | |||
| Chicot County | ||||
| Clark County | ||||
| Cleveland County | ||||
| Conway County | ||||
| Dallas County | ||||
| Desha County | ||||
| Drew County | ||||
| Faulkner County | ||||
| Garland County | ||||
| Grant County | ||||
| Hot Spring County | ||||
| Jefferson County | ||||
| Lincoln County | ||||
| Lonoke County | ||||
| Perry County | ||||
| Pope County | ||||
| Pulaski County | ||||
| Saline County | ||||
| Yell County | ||||
| AQCR 017 Metropolitan Fort Smith Interstate | Unclassifiable/Attainment | |||
| Benton County | ||||
| Crawford County | ||||
| Sebastian County | ||||
| Washington County | ||||
| AQCR 018 Metropolitan Memphis Interstate | Unclassifiable/Attainment | |||
| Crittenden County | ||||
| AQCR 019 Monroe (Louisiana)-El Dorado Interstate | Unclassifiable/Attainment | |||
| Ashley County | ||||
| Bradley County | ||||
| Calhoun County | ||||
| Nevada County | ||||
| Ouachita County | ||||
| Union County | ||||
| AQCR 020 Northeast Arkansas Intrastate | Unclassifiable/Attainment | |||
| Arkansas County | ||||
| Clay County | ||||
| Craighead County | ||||
| Cross County | ||||
| Greene County | ||||
| Independence County | ||||
| Jackson County | ||||
| Lawrence County | ||||
| Lee County | ||||
| Mississippi County | ||||
| Monroe County | ||||
| Phillips County | ||||
| Poinsett County | ||||
| Prairie County | ||||
| Randolph County | ||||
| Sharp County | ||||
| St. Francis County | ||||
| White County | ||||
| Woodruff County | ||||
| AQCR 021 Northwest Arkansas Intrastate | Unclassifiable/Attainment | |||
| Baxter County | ||||
| Boone County | ||||
| Carroll County | ||||
| Cleburne County | ||||
| Franklin County | ||||
| Fulton County | ||||
| Izard County | ||||
| Johnson County | ||||
| Logan County | ||||
| Madison County | ||||
| Marion County | ||||
| Montgomery County | ||||
| Newton County | ||||
| Pike County | ||||
| Polk County | ||||
| Scott County | ||||
| Searcy County | ||||
| Stone County | ||||
| Van Buren County | ||||
| AQCR 022 Shreveport-Texarkana-Tyler Interstate | Unclassifiable/Attainment | |||
| Columbia County | ||||
| Hempstead County | ||||
| Howard County | ||||
| Lafayette County | ||||
| Little River County | ||||
| Miller County | ||||
| Sevier County | ||||
1 This date is November 15, 1990, unless otherwise noted.
Arkansas—Ozone (1-Hour Standard)2
| Designated area | Designation | Classification | ||
|---|---|---|---|---|
| Date1 | Type | Date1 | Type | |
| AQCR 016 Central Arkansas Intrastate (part) Pulaski County | Unclassifiable/Attainment | |||
| AQCR 016 Central Arkansas Intrastate (Remainder of) | Unclassifiable/Attainment | |||
| Chicot County | ||||
| Clark County | ||||
| Cleveland County | ||||
| Conway County | ||||
| Dallas County | ||||
| Desha County | ||||
| Drew County | ||||
| Faulkner County | ||||
| Garland County | ||||
| Grant County | ||||
| Hot Spring County | ||||
| Jefferson County | ||||
| Lincoln County | ||||
| Lonoke County | ||||
| Perry County | ||||
| Pope County | ||||
| Saline County | ||||
| Yell County | ||||
| AQCR 017 Metropolitan Fort Smith Interstate | Unclassifiable/Attainment | |||
| Benton County | ||||
| Crawford County | ||||
| Sebastian County | ||||
| Washington County | ||||
| AQCR 018 Metropolitan Memphis Interstate | Unclassifiable/Attainment | |||
| Crittenden County | ||||
| AQCR 019 Monroe-El Dorado Interstate | Unclassifiable/Attainment | |||
| Ashley County | ||||
| Bradley County | ||||
| Calhoun County | ||||
| Nevada County | ||||
| Ouachita County | ||||
| Union County | ||||
| AQCR 020 Northeast Arkansas Intrastate | Unclassifiable/Attainment | |||
| Arkansas County | ||||
| Clay County | ||||
| Craighead County | ||||
| Cross County | ||||
| Greene County | ||||
| Independence County | ||||
| Jackson County | ||||
| Lawrence County | ||||
| Lee County | ||||
| Mississippi County | ||||
| Monroe County | ||||
| Phillips County | ||||
| Poinsett County | ||||
| Prairie County | ||||
| Randolph County | ||||
| Sharp County | ||||
| St. Francis County | ||||
| White County | ||||
| Woodruff County | ||||
| AQCR 021 Northwest Arkansas Intrastate | Unclassifiable/Attainment | |||
| Baxter County | ||||
| Boone County | ||||
| Carroll County | ||||
| Cleburne County | ||||
| Franklin County | ||||
| Fulton County | ||||
| Izard County | ||||
| Johnson County | ||||
| Logan County | ||||
| Madison County | ||||
| Marion County | ||||
| Montgomery County | ||||
| Newton County | ||||
| Pike County | ||||
| Polk County | ||||
| Scott County | ||||
| Searcy County | ||||
| Stone County | ||||
| Van Buren County | ||||
| AQCR 022 Shreveport-Texarkana-Tyler Interstate | Unclassifiable/Attainment | |||
| Columbia County | ||||
| Hempstead County | ||||
| Howard County | ||||
| Lafayette County | ||||
| Little River County | ||||
| Miller County | ||||
| Sevier 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 Arkansas.
Arkansas—PM-10
| Designated area | Designation | Classification | ||
|---|---|---|---|---|
| Date | Type | Date | Type | |
| AQCR 016 Central Arkansas Intrastate | Unclassifiable | Unclassifiable. | ||
| AQCR 017 Metropolitan Fort Smith Interstate | Unclassifiable | Unclassifiable. | ||
| AQCR 018 Metropolitan Memphis Intrastate | Unclassifiable | Unclassifiable. | ||
| AQCR 019 Monroe (Louisiana)-El Dorado Interstate | Unclassifiable | Unclassifiable. | ||
| AQCR 020 Northeast Arkansas Intrastate | Unclassifiable | Unclassifiable. | ||
| AQCR 021 Northwest Arkansas Intrastate | Unclassifiable | Unclassifiable. | ||
| AQCR 022 Shreveport-Texarkana-Tyler Interstate | Unclassifiable | Unclassifiable. | ||
Arkansas—1997 Annual PM
[Primary and Secondary]
| Designated area | Designation a | Classification | ||
|---|---|---|---|---|
| Date 1 | Type | Date | Type | |
| AQCR 016 Central Arkansas Intrastate: | ||||
| Chicot County | Unclassifiable/Attainment | |||
| Clark County | Unclassifiable/Attainment | |||
| Cleveland County | Unclassifiable/Attainment | |||
| Conway County | Unclassifiable/Attainment | |||
| Dallas County | Unclassifiable/Attainment | |||
| Desha County | Unclassifiable/Attainment | |||
| Drew County | Unclassifiable/Attainment | |||
| Faulkner County | Unclassifiable/Attainment | |||
| Garland County | Unclassifiable/Attainment | |||
| Grant County | Unclassifiable/Attainment | |||
| Hot Spring County | Unclassifiable/Attainment | |||
| Jefferson County | Unclassifiable/Attainment | |||
| Lincoln County | Unclassifiable/Attainment | |||
| Lonoke County | Unclassifiable/Attainment | |||
| Perry County | Unclassifiable/Attainment | |||
| Pope County | Unclassifiable/Attainment | |||
| Pulaski County | Unclassifiable/Attainment | |||
| Saline County | Unclassifiable/Attainment | |||
| Yell County | Unclassifiable/Attainment | |||
| AQCR 017 Metropolitan Fort Smith Interstate: | ||||
| Benton County | Unclassifiable/Attainment | |||
| Crawford County | Unclassifiable/Attainment | |||
| Sebastian County | Unclassifiable/Attainment | |||
| Washington County | Unclassifiable/Attainment | |||
| AQCR 019 Monroe-El Dorado Interstate: | ||||
| Ashley County | Unclassifiable/Attainment | |||
| Bradley County | Unclassifiable/Attainment | |||
| Calhoun County | Unclassifiable/Attainment | |||
| Nevada County | Unclassifiable/Attainment | |||
| Ouachita County | Unclassifiable/Attainment | |||
| Union County | Unclassifiable/Attainment | |||
| AQCR 020 Northeast Arkansas Intrastate: | ||||
| Arkansas County | Unclassifiable/Attainment | |||
| Clay County | Unclassifiable/Attainment | |||
| Craighead County | Unclassifiable/Attainment | |||
| Cross County | Unclassifiable/Attainment | |||
| Greene County | Unclassifiable/Attainment | |||
| Independence County | Unclassifiable/Attainment | |||
| Jackson County | Unclassifiable/Attainment | |||
| Lawrence County | Unclassifiable/Attainment | |||
| Lee County | Unclassifiable/Attainment | |||
| Mississippi County | Unclassifiable/Attainment | |||
| Monroe County | Unclassifiable/Attainment | |||
| Phillips County | Unclassifiable/Attainment | |||
| Poinsett County | Unclassifiable/Attainment | |||
| Prairie County | Unclassifiable/Attainment | |||
| Randolph County | Unclassifiable/Attainment | |||
| St. Francis County | Unclassifiable/Attainment | |||
| Sharp County | Unclassifiable/Attainment | |||
| White County | Unclassifiable/Attainment | |||
| Woodruff County | Unclassifiable/Attainment | |||
| AQCR 021 Northwest Arkansas Intrastate: | ||||
| Baxter County | Unclassifiable/Attainment | |||
| Boone County | Unclassifiable/Attainment | |||
| Carroll County | Unclassifiable/Attainment | |||
| Cleburne County | Unclassifiable/Attainment | |||
| Franklin County | Unclassifiable/Attainment | |||
| Fulton County | Unclassifiable/Attainment | |||
| Izard County | Unclassifiable/Attainment | |||
| Johnson County | Unclassifiable/Attainment | |||
| Logan County | Unclassifiable/Attainment | |||
| Madison County | Unclassifiable/Attainment | |||
| Marion County | Unclassifiable/Attainment | |||
| Montgomery County | Unclassifiable/Attainment | |||
| Newton County | Unclassifiable/Attainment | |||
| Pike County | Unclassifiable/Attainment | |||
| Polk County | Unclassifiable/Attainment | |||
| Scott County | Unclassifiable/Attainment | |||
| Searcy County | Unclassifiable/Attainment | |||
| Stone County | Unclassifiable/Attainment | |||
| Van Buren County | Unclassifiable/Attainment | |||
| AQCR 022 Shreveport-Texarkana-Tyler Interstate: | ||||
| Columbia County | Unclassifiable/Attainment | |||
| Hempstead County | Unclassifiable/Attainment | |||
| Howard County | Unclassifiable/Attainment | |||
| Lafayette County | Unclassifiable/Attainment | |||
| Little River County | Unclassifiable/Attainment | |||
| Miller County | Unclassifiable/Attainment | |||
| Sevier County | Unclassifiable/Attainment | |||
| Memphis, TN-AR: (AQCR 018 Metropolitan Memphis Interstate): | ||||
| Crittenden 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.
Arkansas—2012 Annual PM
[Primary]
| Designated area 1 | Designation | Classification | ||
|---|---|---|---|---|
| Date 2 | Type | Date 2 | Type | |
| AQCR 016 Central Arkansas Intrastate: | ||||
| Chicot County | Unclassifiable/Attainment | |||
| Clark County | Unclassifiable/Attainment | |||
| Cleveland County | Unclassifiable/Attainment | |||
| Conway County | Unclassifiable/Attainment | |||
| Dallas County | Unclassifiable/Attainment | |||
| Desha County | Unclassifiable/Attainment | |||
| Drew County | Unclassifiable/Attainment | |||
| Faulkner County | Unclassifiable/Attainment | |||
| Garland County | Unclassifiable/Attainment | |||
| Grant County | Unclassifiable/Attainment | |||
| Hot Spring County | Unclassifiable/Attainment | |||
| Jefferson County | Unclassifiable/Attainment | |||
| Lincoln County | Unclassifiable/Attainment | |||
| Lonoke County | Unclassifiable/Attainment | |||
| Perry County | Unclassifiable/Attainment | |||
| Pope County | Unclassifiable/Attainment | |||
| Pulaski County | Unclassifiable/Attainment | |||
| Saline County | Unclassifiable/Attainment | |||
| Yell County | Unclassifiable/Attainment | |||
| AQCR 017 Metropolitan Fort Smith Interstate: | ||||
| Benton County | Unclassifiable/Attainment | |||
| Crawford County | Unclassifiable/Attainment | |||
| Sebastian County | Unclassifiable/Attainment | |||
| Washington County | Unclassifiable/Attainment | |||
| AQCR 018 Metropolitan Memphis Interstate: Crittenden County | Unclassifiable/Attainment | |||
| AQCR 019 Monroe-El Dorado Interstate: | ||||
| Ashley County | Unclassifiable/Attainment | |||
| Bradley County | Unclassifiable/Attainment | |||
| Calhoun County | Unclassifiable/Attainment | |||
| Nevada County | Unclassifiable/Attainment | |||
| Ouachita County | Unclassifiable/Attainment | |||
| Union County | Unclassifiable/Attainment | |||
| AQCR 020 Northeast Arkansas Intrastate: | ||||
| Arkansas County | Unclassifiable/Attainment | |||
| Clay County | Unclassifiable/Attainment | |||
| Craighead County | Unclassifiable/Attainment | |||
| Cross County | Unclassifiable/Attainment | |||
| Greene County | Unclassifiable/Attainment | |||
| Independence County | Unclassifiable/Attainment | |||
| Jackson County | Unclassifiable/Attainment | |||
| Lawrence County | Unclassifiable/Attainment | |||
| Lee County | Unclassifiable/Attainment | |||
| Mississippi County | Unclassifiable/Attainment | |||
| Monroe County | Unclassifiable/Attainment | |||
| Phillips County | Unclassifiable/Attainment | |||
| Poinsett County | Unclassifiable/Attainment | |||
| Prairie County | Unclassifiable/Attainment | |||
| Randolph County | Unclassifiable/Attainment | |||
| St. Francis County | Unclassifiable/Attainment | |||
| Sharp County | Unclassifiable/Attainment | |||
| White County | Unclassifiable/Attainment | |||
| Woodruff County | Unclassifiable/Attainment | |||
| AQCR 021 Northwest Arkansas Intrastate: | ||||
| Baxter County | Unclassifiable/Attainment | |||
| Boone County | Unclassifiable/Attainment | |||
| Carroll County | Unclassifiable/Attainment | |||
| Cleburne County | Unclassifiable/Attainment | |||
| Franklin County | Unclassifiable/Attainment | |||
| Fulton County | Unclassifiable/Attainment | |||
| Izard County | Unclassifiable/Attainment | |||
| Johnson County | Unclassifiable/Attainment | |||
| Logan County | Unclassifiable/Attainment | |||
| Madison County | Unclassifiable/Attainment | |||
| Marion County | Unclassifiable/Attainment | |||
| Montgomery County | Unclassifiable/Attainment | |||
| Newton County | Unclassifiable/Attainment | |||
| Pike County | Unclassifiable/Attainment | |||
| Polk County | Unclassifiable/Attainment | |||
| Scott County | Unclassifiable/Attainment | |||
| Searcy County | Unclassifiable/Attainment | |||
| Stone County | Unclassifiable/Attainment | |||
| Van Buren County | Unclassifiable/Attainment | |||
| AQCR 022 Shreveport-Texarkana-Tyler Interstate: | ||||
| Columbia County | Unclassifiable/Attainment | |||
| Hempstead County | Unclassifiable/Attainment | |||
| Howard County | Unclassifiable/Attainment | |||
| Lafayette County | Unclassifiable/Attainment | |||
| Little River County | Unclassifiable/Attainment | |||
| Miller County | Unclassifiable/Attainment | |||
| Sevier 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.
Arkansas—1997 24-Hour PM
[Primary and Secondary]
| Designated area | Designation a | Classification | ||
|---|---|---|---|---|
| Date 1 | Type | Date | Type | |
| AQCR 016 Central Arkansas Intrastate: | ||||
| Chicot County | Unclassifiable/Attainment | |||
| Clark County | Unclassifiable/Attainment | |||
| Cleveland County | Unclassifiable/Attainment | |||
| Conway County | Unclassifiable/Attainment | |||
| Dallas County | Unclassifiable/Attainment | |||
| Desha County | Unclassifiable/Attainment | |||
| Drew County | Unclassifiable/Attainment | |||
| Faulkner County | Unclassifiable/Attainment | |||
| Garland County | Unclassifiable/Attainment | |||
| Grant County | Unclassifiable/Attainment | |||
| Hot Spring County | Unclassifiable/Attainment | |||
| Jefferson County | Unclassifiable/Attainment | |||
| Lincoln County | Unclassifiable/Attainment | |||
| Lonoke County | Unclassifiable/Attainment | |||
| Perry County | Unclassifiable/Attainment | |||
| Pope County | Unclassifiable/Attainment | |||
| Pulaski County | Unclassifiable/Attainment | |||
| Saline County | Unclassifiable/Attainment | |||
| Yell County | Unclassifiable/Attainment | |||
| AQCR 017 Metropolitan Fort Smith Interstate: | ||||
| Benton County | Unclassifiable/Attainment | |||
| Crawford County | Unclassifiable/Attainment | |||
| Sebastian County | Unclassifiable/Attainment | |||
| Washington County | Unclassifiable/Attainment | |||
| AQCR 019 Monroe-El Dorado Interstate: | ||||
| Ashley County | Unclassifiable/Attainment | |||
| Bradley County | Unclassifiable/Attainment | |||
| Calhoun County | Unclassifiable/Attainment | |||
| Nevada County | Unclassifiable/Attainment | |||
| Ouachita County | Unclassifiable/Attainment | |||
| Union County | Unclassifiable/Attainment | |||
| AQCR 020 Northeast Arkansas Intrastate: | ||||
| Arkansas County | Unclassifiable/Attainment | |||
| Clay County | Unclassifiable/Attainment | |||
| Craighead County | Unclassifiable/Attainment | |||
| Cross County | Unclassifiable/Attainment | |||
| Greene County | Unclassifiable/Attainment | |||
| Independence County | Unclassifiable/Attainment | |||
| Jackson County | Unclassifiable/Attainment | |||
| Lawrence County | Unclassifiable/Attainment | |||
| Lee County | Unclassifiable/Attainment | |||
| Mississippi County | Unclassifiable/Attainment | |||
| Monroe County | Unclassifiable/Attainment | |||
| Phillips County | Unclassifiable/Attainment | |||
| Poinsett County | Unclassifiable/Attainment | |||
| Prairie County | Unclassifiable/Attainment | |||
| Randolph County | Unclassifiable/Attainment | |||
| St. Francis County | Unclassifiable/Attainment | |||
| Sharp County | Unclassifiable/Attainment | |||
| White County | Unclassifiable/Attainment | |||
| Woodruff County | Unclassifiable/Attainment | |||
| AQCR 021 Northwest Arkansas Intrastate: | ||||
| Baxter County | Unclassifiable/Attainment | |||
| Boone County | Unclassifiable/Attainment | |||
| Carroll County | Unclassifiable/Attainment | |||
| Cleburne County | Unclassifiable/Attainment | |||
| Franklin County | Unclassifiable/Attainment | |||
| Fulton County | Unclassifiable/Attainment | |||
| Izard County | Unclassifiable/Attainment | |||
| Johnson County | Unclassifiable/Attainment | |||
| Logan County | Unclassifiable/Attainment | |||
| Madison County | Unclassifiable/Attainment | |||
| Marion County | Unclassifiable/Attainment | |||
| Montgomery County | Unclassifiable/Attainment | |||
| Newton County | Unclassifiable/Attainment | |||
| Pike County | Unclassifiable/Attainment | |||
| Polk County | Unclassifiable/Attainment | |||
| Scott County | Unclassifiable/Attainment | |||
| Searcy County | Unclassifiable/Attainment | |||
| Stone County | Unclassifiable/Attainment | |||
| Van Buren County | Unclassifiable/Attainment | |||
| AQCR 022 Shreveport-Texarkana-Tyler Interstate: | ||||
| Columbia County | Unclassifiable/Attainment | |||
| Hempstead County | Unclassifiable/Attainment | |||
| Howard County | Unclassifiable/Attainment | |||
| Lafayette County | Unclassifiable/Attainment | |||
| Little River County | Unclassifiable/Attainment | |||
| Miller County | Unclassifiable/Attainment | |||
| Sevier County | Unclassifiable/Attainment | |||
| Memphis, TN-AR: (AQCR 018 Metropolitan Memphis Interstate): | ||||
| Crittenden 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.
Arkansas—2006 24-Hour PM
[Primary and Secondary]
| Designated area | Designation a | Classification | ||
|---|---|---|---|---|
| Date 1 | Type | Date | Type | |
| AQCR 016 Central Arkansas Intrastate: | ||||
| Chicot County | Unclassifiable/Attainment | |||
| Clark County | Unclassifiable/Attainment | |||
| Cleveland County | Unclassifiable/Attainment | |||
| Conway County | Unclassifiable/Attainment | |||
| Dallas County | Unclassifiable/Attainment | |||
| Desha County | Unclassifiable/Attainment | |||
| Drew County | Unclassifiable/Attainment | |||
| Faulkner County | Unclassifiable/Attainment | |||
| Garland County | Unclassifiable/Attainment | |||
| Grant County | Unclassifiable/Attainment | |||
| Hot Spring County | Unclassifiable/Attainment | |||
| Jefferson County | Unclassifiable/Attainment | |||
| Lincoln County | Unclassifiable/Attainment | |||
| Lonoke County | Unclassifiable/Attainment | |||
| Perry County | Unclassifiable/Attainment | |||
| Pope County | Unclassifiable/Attainment | |||
| Pulaski County | Unclassifiable/Attainment | |||
| Saline County | Unclassifiable/Attainment | |||
| Yell County | Unclassifiable/Attainment | |||
| AQCR 017 Metropolitan Fort Smith Interstate: | ||||
| Benton County | Unclassifiable/Attainment | |||
| Crawford County | Unclassifiable/Attainment | |||
| Sebastian County | Unclassifiable/Attainment | |||
| Washington County | Unclassifiable/Attainment | |||
| AQCR 019 Monroe-El Dorado Interstate: | ||||
| Ashley County | Unclassifiable/Attainment | |||
| Bradley County | Unclassifiable/Attainment | |||
| Calhoun County | Unclassifiable/Attainment | |||
| Nevada County | Unclassifiable/Attainment | |||
| Ouachita County | Unclassifiable/Attainment | |||
| Union County | Unclassifiable/Attainment | |||
| AQCR 020 Northeast Arkansas Intrastate: | ||||
| Arkansas County | Unclassifiable/Attainment | |||
| Clay County | Unclassifiable/Attainment | |||
| Craighead County | Unclassifiable/Attainment | |||
| Cross County | Unclassifiable/Attainment | |||
| Greene County | Unclassifiable/Attainment | |||
| Independence County | Unclassifiable/Attainment | |||
| Jackson County | Unclassifiable/Attainment | |||
| Lawrence County | Unclassifiable/Attainment | |||
| Lee County | Unclassifiable/Attainment | |||
| Mississippi County | Unclassifiable/Attainment | |||
| Monroe County | Unclassifiable/Attainment | |||
| Phillips County | Unclassifiable/Attainment | |||
| Poinsett County | Unclassifiable/Attainment | |||
| Prairie County | Unclassifiable/Attainment | |||
| Randolph County | Unclassifiable/Attainment | |||
| St. Francis County | Unclassifiable/Attainment | |||
| Sharp County | Unclassifiable/Attainment | |||
| White County | Unclassifiable/Attainment | |||
| Woodruff County | Unclassifiable/Attainment | |||
| AQCR 021 Northwest Arkansas Intrastate: | ||||
| Baxter County | Unclassifiable/Attainment | |||
| Boone County | Unclassifiable/Attainment | |||
| Carroll County | Unclassifiable/Attainment | |||
| Cleburne County | Unclassifiable/Attainment | |||
| Franklin County | Unclassifiable/Attainment | |||
| Fulton County | Unclassifiable/Attainment | |||
| Izard County | Unclassifiable/Attainment | |||
| Johnson County | Unclassifiable/Attainment | |||
| Logan County | Unclassifiable/Attainment | |||
| Madison County | Unclassifiable/Attainment | |||
| Marion County | Unclassifiable/Attainment | |||
| Montgomery County | Unclassifiable/Attainment | |||
| Newton County | Unclassifiable/Attainment | |||
| Pike County | Unclassifiable/Attainment | |||
| Polk County | Unclassifiable/Attainment | |||
| Scott County | Unclassifiable/Attainment | |||
| Searcy County | Unclassifiable/Attainment | |||
| Stone County | Unclassifiable/Attainment | |||
| Van Buren County | Unclassifiable/Attainment | |||
| AQCR 022 Shreveport-Texarkana-Tyler Interstate: | ||||
| Columbia County | Unclassifiable/Attainment | |||
| Hempstead County | Unclassifiable/Attainment | |||
| Howard County | Unclassifiable/Attainment | |||
| Lafayette County | Unclassifiable/Attainment | |||
| Little River County | Unclassifiable/Attainment | |||
| Miller County | Unclassifiable/Attainment | |||
| Sevier County | Unclassifiable/Attainment | |||
| Memphis, TN-AR: (AQCR 018 Metropolitan Memphis Interstate): | ||||
| Crittenden 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.
Arkansas—NO
| Designated area | Does not meet primary standards | Cannot be classified or better than national standards |
|---|---|---|
| AQCR 016 | X | |
| AQCR 017 | X | |
| AQCR 018 | X | |
| AQCR 019 | X | |
| AQCR 020 | X | |
| AQCR 021 | X | |
| AQCR 022 | X |
Arkansas—NO
| Designated area | Designation a | |
|---|---|---|
| Date 1 | Type | |
| Ashley County | Unclassifiable/Attainment. | |
| Arkansas County | Unclassifiable/Attainment. | |
| Baxter County | Unclassifiable/Attainment. | |
| Benton County | Unclassifiable/Attainment. | |
| Boone County | Unclassifiable/Attainment. | |
| Bradley County | Unclassifiable/Attainment. | |
| Calhoun County | Unclassifiable/Attainment. | |
| Carroll County | Unclassifiable/Attainment. | |
| Chicot County | Unclassifiable/Attainment. | |
| Clark County | Unclassifiable/Attainment. | |
| Clay County | Unclassifiable/Attainment. | |
| Cleburne County | Unclassifiable/Attainment. | |
| Cleveland County | Unclassifiable/Attainment. | |
| Columbia County | Unclassifiable/Attainment. | |
| Conway County | Unclassifiable/Attainment. | |
| Craighead County | Unclassifiable/Attainment. | |
| Crawford County | Unclassifiable/Attainment. | |
| Crittenden County | Unclassifiable/Attainment. | |
| Cross County | Unclassifiable/Attainment. | |
| Dallas County | Unclassifiable/Attainment. | |
| Desha County | Unclassifiable/Attainment. | |
| Drew County | Unclassifiable/Attainment. | |
| Faulkner County | Unclassifiable/Attainment. | |
| Franklin County | Unclassifiable/Attainment. | |
| Fulton County | Unclassifiable/Attainment. | |
| Garland County. | Unclassifiable/Attainment. | |
| Grant County | Unclassifiable/Attainment. | |
| Greene County | Unclassifiable/Attainment. | |
| Hempstead County | Unclassifiable/Attainment. | |
| Hot Spring County | Unclassifiable/Attainment. | |
| Howard County. | Unclassifiable/Attainment. | |
| Independence County | Unclassifiable/Attainment. | |
| Izard Count | Unclassifiable/Attainment. | |
| Jackson County | Unclassifiable/Attainment. | |
| Jefferson County. | Unclassifiable/Attainment. | |
| Johnson County | Unclassifiable/Attainment. | |
| Lafayette County | Unclassifiable/Attainment. | |
| Lawrence County | Unclassifiable/Attainment. | |
| Lee County | Unclassifiable/Attainment. | |
| Lincoln County | Unclassifiable/Attainment. | |
| Little River County | Unclassifiable/Attainment. | |
| Logan County | Unclassifiable/Attainment. | |
| Lonoke County | Unclassifiable/Attainment. | |
| Madison County | Unclassifiable/Attainment. | |
| Marion County | Unclassifiable/Attainment. | |
| Miller County | Unclassifiable/Attainment. | |
| Mississippi County | Unclassifiable/Attainment. | |
| Monroe County | Unclassifiable/Attainment. | |
| Montgomery County | Unclassifiable/Attainment. | |
| Nevada County | Unclassifiable/Attainment. | |
| Newton County | Unclassifiable/Attainment. | |
| Ouachita County | Unclassifiable/Attainment. | |
| Perry County | Unclassifiable/Attainment. | |
| Phillips County | Unclassifiable/Attainment. | |
| Pike County | Unclassifiable/Attainment. | |
| Poinsett County | Unclassifiable/Attainment. | |
| Polk County | Unclassifiable/Attainment. | |
| Pope County | Unclassifiable/Attainment. | |
| Prairie County | Unclassifiable/Attainment. | |
| Pulaski County | Unclassifiable/Attainment. | |
| Randolph County | Unclassifiable/Attainment. | |
| St. Francis County | Unclassifiable/Attainment. | |
| Saline County | Unclassifiable/Attainment. | |
| Scott County | Unclassifiable/Attainment. | |
| Searcy County | Unclassifiable/Attainment. | |
| Sebastian County | Unclassifiable/Attainment | |
| Sevier County | Unclassifiable/Attainment. | |
| Sharp County | Unclassifiable/Attainment. | |
| Stone County | Unclassifiable/Attainment. | |
| Union County | Unclassifiable/Attainment. | |
| Van Buren County | Unclassifiable/Attainment. | |
| Washington County | Unclassifiable/Attainment. | |
| White County | Unclassifiable/Attainment. | |
| Woodruff County | Unclassifiable/Attainment. | |
| Yell 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.
Arkansas—1997 8-Hour Ozone NAAQS
[Primary and Secondary]
| Designated area | Designation a | Category/classification | ||
|---|---|---|---|---|
| Date 1 | Type | Date 1 | Type | |
| Memphis TN-AR: (AQCR Metropolitan Memphis Interstate) Crittenden County | Attainment | (2) | ||
| AQCR 016 Central Arkansas Intrastate (part) | Unclassifiable/Attainment | |||
| Pulaski County | ||||
| AQCR 016 Central Arkansas Intrastate (remainder of) | Unclassifiable/Attainment | |||
| Chicot County | ||||
| Clark County | ||||
| Cleveland County | ||||
| Conway County | ||||
| Dallas County | ||||
| Desha County | ||||
| Drew County | ||||
| Faulkner County | ||||
| Garland County | ||||
| Grant County | ||||
| Hot Spring County | ||||
| Jefferson County | ||||
| Lincoln County | ||||
| Lonoke County | ||||
| Perry County | ||||
| Pope County | ||||
| Saline County | ||||
| Yell County | ||||
| AQCR 017 Metropolitan Fort Smith Interstate | Unclassifiable/Attainment | |||
| Benton County | ||||
| Crawford County | ||||
| Sebastian County | ||||
| Washington County | ||||
| AQCR 019 Monroe-El Dorado Interstate | Unclassifiable/Attainment | |||
| Ashley County | ||||
| Bradley County | ||||
| Calhoun County | ||||
| Nevada County | ||||
| Ouachita County | ||||
| Union County | ||||
| AQCR 020 Northeast Arkansas Intrastate | Unclassifiable/Attainment | |||
| Arkansas County | ||||
| Clay County | ||||
| Craighead County | ||||
| Cross County | ||||
| Greene County | ||||
| Independence County | ||||
| Jackson County | ||||
| Lawrence County | ||||
| Lee County | ||||
| Mississippi County | ||||
| Monroe County | ||||
| Phillips County | ||||
| Poinsett County | ||||
| Prairie County | ||||
| Randolph County | ||||
| St. Francis County | ||||
| Sharp County | ||||
| White County | ||||
| Woodruff County | ||||
| AQCR 021 Northwest Arkansas Intrastate | Unclassifiable/Attainment | |||
| Baxter County | ||||
| Boone County | ||||
| Carroll County | ||||
| Cleburne County | ||||
| Franklin County | ||||
| Fulton County | ||||
| Izard County | ||||
| Johnson County | ||||
| Logan County | ||||
| Madison County | ||||
| Marion County | ||||
| Montgomery County | ||||
| Newton County | ||||
| Pike County | ||||
| Polk County | ||||
| Scott County | ||||
| Searcy County | ||||
| Stone County | ||||
| Van Buren County | ||||
| AQCR 022 Shreveport-Texarkana-Tyler Interstate. | Unclassifiable/Attainment | |||
| Columbia County | ||||
| Hempstead County | ||||
| Howard County | ||||
| Lafayette County | ||||
| Little River County | ||||
| Miller County | ||||
| Sevier 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.
2 Effective April 23, 2010.
Arkansas—2008 8-Hour Ozone NAAQS
[Primary and Secondary]
| Designated area | Designation | Classification | ||
|---|---|---|---|---|
| Date 1 | Type | Date 1 | Type | |
| Memphis, TN-MS-AR 2 Crittenden County | 4/25/2016 | Attainment | ||
| Rest of State: 3 | ||||
| Ashley County | Unclassifiable/Attainment | |||
| Arkansas County | Unclassifiable/Attainment | |||
| Baxter County | Unclassifiable/Attainment | |||
| Benton County | Unclassifiable/Attainment | |||
| Boone County | Unclassifiable/Attainment | |||
| Bradley County | Unclassifiable/Attainment | |||
| Calhoun County | Unclassifiable/Attainment | |||
| Carroll County | Unclassifiable/Attainment | |||
| Chicot County | Unclassifiable/Attainment | |||
| Clark County | Unclassifiable/Attainment | |||
| Clay County | Unclassifiable/Attainment | |||
| Cleburne County | Unclassifiable/Attainment | |||
| Cleveland County | Unclassifiable/Attainment | |||
| Columbia County | Unclassifiable/Attainment | |||
| Conway County | Unclassifiable/Attainment | |||
| Craighead County | Unclassifiable/Attainment | |||
| Crawford County | Unclassifiable/Attainment | |||
| Cross County | Unclassifiable/Attainment | |||
| Dallas County | Unclassifiable/Attainment | |||
| Desha County | Unclassifiable/Attainment | |||
| Drew County | Unclassifiable/Attainment | |||
| Faulkner County | Unclassifiable/Attainment | |||
| Franklin County | Unclassifiable/Attainment | |||
| Fulton County | Unclassifiable/Attainment | |||
| Garland County | Unclassifiable/Attainment | |||
| Grant County | Unclassifiable/Attainment | |||
| Greene County | Unclassifiable/Attainment | |||
| Hempstead County | Unclassifiable/Attainment | |||
| Hot Spring County | Unclassifiable/Attainment | |||
| Howard County | Unclassifiable/Attainment | |||
| Independence County | Unclassifiable/Attainment | |||
| Izard County | Unclassifiable/Attainment | |||
| Jackson County | Unclassifiable/Attainment | |||
| Jefferson County | Unclassifiable/Attainment | |||
| Johnson County | Unclassifiable/Attainment | |||
| Lafayette County | Unclassifiable/Attainment | |||
| Lawrence County | Unclassifiable/Attainment | |||
| Lee County | Unclassifiable/Attainment | |||
| Lincoln County | Unclassifiable/Attainment | |||
| Little River County | Unclassifiable/Attainment | |||
| Logan County | Unclassifiable/Attainment | |||
| Lonoke County | Unclassifiable/Attainment | |||
| Madison County | Unclassifiable/Attainment | |||
| Marion County | Unclassifiable/Attainment | |||
| Miller County | Unclassifiable/Attainment | |||
| Mississippi County | Unclassifiable/Attainment | |||
| Monroe County | Unclassifiable/Attainment | |||
| Montgomery County | Unclassifiable/Attainment | |||
| Nevada County | Unclassifiable/Attainment | |||
| Newton County | Unclassifiable/Attainment | |||
| Ouachita County | Unclassifiable/Attainment | |||
| Perry County | Unclassifiable/Attainment | |||
| Phillips County | Unclassifiable/Attainment | |||
| Pike County | Unclassifiable/Attainment | |||
| Poinsett County | Unclassifiable/Attainment | |||
| Polk County | Unclassifiable/Attainment | |||
| Pope County | Unclassifiable/Attainment | |||
| Prairie County | Unclassifiable/Attainment | |||
| Pulaski County | Unclassifiable/Attainment | |||
| Randolph County | Unclassifiable/Attainment | |||
| St. Francis County | Unclassifiable/Attainment | |||
| Saline County | Unclassifiable/Attainment | |||
| Scott County | Unclassifiable/Attainment | |||
| Searcy County | Unclassifiable/Attainment | |||
| Sebastian County | Unclassifiable/Attainment | |||
| Sevier County | Unclassifiable/Attainment | |||
| Sharp County | Unclassifiable/Attainment | |||
| Stone County | Unclassifiable/Attainment | |||
| Union County | Unclassifiable/Attainment | |||
| Van Buren County | Unclassifiable/Attainment | |||
| Washington County | Unclassifiable/Attainment | |||
| White County | Unclassifiable/Attainment | |||
| Woodruff County | Unclassifiable/Attainment | |||
| Yell 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.
Arkansas—2015 8-Hour Ozone NAAQS
[Primary and Secondary]
| Designated area 1 | Designation | Classification | ||
|---|---|---|---|---|
| Date 2 | Type | Date | Type | |
| Arkansas County | Attainment/Unclassifiable | |||
| Ashley County | Attainment/Unclassifiable | |||
| Baxter County | Attainment/Unclassifiable | |||
| Benton County | Attainment/Unclassifiable | |||
| Boone County | Attainment/Unclassifiable | |||
| Bradley County | Attainment/Unclassifiable | |||
| Calhoun County | Attainment/Unclassifiable | |||
| Carroll County | Attainment/Unclassifiable | |||
| Chicot County | Attainment/Unclassifiable | |||
| Clark County | Attainment/Unclassifiable | |||
| Clay County | Attainment/Unclassifiable | |||
| Cleburne County | Attainment/Unclassifiable | |||
| Cleveland County | Attainment/Unclassifiable | |||
| Columbia County | Attainment/Unclassifiable | |||
| Conway County | Attainment/Unclassifiable | |||
| Craighead County | Attainment/Unclassifiable | |||
| Crawford County | Attainment/Unclassifiable | |||
| Crittenden County | Attainment/Unclassifiable | |||
| Cross County | Attainment/Unclassifiable | |||
| Dallas County | Attainment/Unclassifiable | |||
| Desha County | Attainment/Unclassifiable | |||
| Drew County | Attainment/Unclassifiable | |||
| Faulkner County | Attainment/Unclassifiable | |||
| Franklin County | Attainment/Unclassifiable | |||
| Fulton County | Attainment/Unclassifiable | |||
| Garland County | Attainment/Unclassifiable | |||
| Grant County | Attainment/Unclassifiable | |||
| Greene County | Attainment/Unclassifiable | |||
| Hempstead County | Attainment/Unclassifiable | |||
| Hot Spring County | Attainment/Unclassifiable | |||
| Howard County | Attainment/Unclassifiable | |||
| Independence County | Attainment/Unclassifiable | |||
| Izard County | Attainment/Unclassifiable | |||
| Jackson County | Attainment/Unclassifiable | |||
| Jefferson County | Attainment/Unclassifiable | |||
| Johnson County | Attainment/Unclassifiable | |||
| Lafayette County | Attainment/Unclassifiable | |||
| Lawrence County | Attainment/Unclassifiable | |||
| Lee County | Attainment/Unclassifiable | |||
| Lincoln County | Attainment/Unclassifiable | |||
| Little River County | Attainment/Unclassifiable | |||
| Logan County | Attainment/Unclassifiable | |||
| Lonoke County | Attainment/Unclassifiable | |||
| Madison County | Attainment/Unclassifiable | |||
| Marion County | Attainment/Unclassifiable | |||
| Miller County | Attainment/Unclassifiable | |||
| Mississippi County | Attainment/Unclassifiable | |||
| Monroe County | Attainment/Unclassifiable | |||
| Montgomery County | Attainment/Unclassifiable | |||
| Nevada County | Attainment/Unclassifiable | |||
| Newton County | Attainment/Unclassifiable | |||
| Ouachita County | Attainment/Unclassifiable | |||
| Perry County | Attainment/Unclassifiable | |||
| Phillips County | Attainment/Unclassifiable | |||
| Pike County | Attainment/Unclassifiable | |||
| Poinsett County | Attainment/Unclassifiable | |||
| Polk County | Attainment/Unclassifiable | |||
| Pope County | Attainment/Unclassifiable | |||
| Prairie County | Attainment/Unclassifiable | |||
| Pulaski County | Attainment/Unclassifiable | |||
| Randolph County | Attainment/Unclassifiable | |||
| St. Francis County | Attainment/Unclassifiable | |||
| Saline County | Attainment/Unclassifiable | |||
| Scott County | Attainment/Unclassifiable | |||
| Searcy County | Attainment/Unclassifiable | |||
| Sebastian County | Attainment/Unclassifiable | |||
| Sevier County | Attainment/Unclassifiable | |||
| Sharp County | Attainment/Unclassifiable | |||
| Stone County | Attainment/Unclassifiable | |||
| Union County | Attainment/Unclassifiable | |||
| Van Buren County | Attainment/Unclassifiable | |||
| Washington County | Attainment/Unclassifiable | |||
| White County | Attainment/Unclassifiable | |||
| Woodruff County | Attainment/Unclassifiable | |||
| Yell 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.
Arkansas—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.