Arkansas—SO2 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—Carbon Monoxide Designated Area Designation Date 1 Type Classification 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) Designated area Designation Date1 Type Classification 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. Arkansas—PM-10 Designated area Designation Date Type Classification Date Type AQCR 016Central Arkansas Intrastate Unclassifiable Unclassifiable. AQCR 017Metropolitan Fort Smith Interstate Unclassifiable Unclassifiable. AQCR 018Metropolitan Memphis Intrastate Unclassifiable Unclassifiable. AQCR 019Monroe (Louisiana)-El Dorado Interstate Unclassifiable Unclassifiable. AQCR 020Northeast Arkansas Intrastate Unclassifiable Unclassifiable. AQCR 021Northwest Arkansas Intrastate Unclassifiable Unclassifiable. AQCR 022Shreveport-Texarkana-Tyler Interstate Unclassifiable Unclassifiable. Arkansas—NO2 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 [43 FR 8964, Mar. 3, 1978, as amended at 43 FR 40421, Sept. 11, 1978; 49 FR 37754, Sept. 26, 1984; 56 FR 56721, Nov. 6, 1991; 63 FR 31025, June 5, 1998; 65 FR 45205, July 20, 2000; 65 FR 61109, Oct. 16, 2000]