Energy & environment · 14/01/2010Updated: 10/17/2026 · 1 min read

EPA Approves Arkansas' Plan to Meet 8-Hour Ozone Standard, Redesignates Crittenden County Area

The US Environmental Protection Agency (EPA) has approved the State of Arkansas' plan to meet the 8-hour ozone National Ambient Air Quality Standard (NAAQS), redesignating the Crittenden County, Arkansas portion of the Memphis, Tennessee-Arkansas 1997 8-hour ozone nonattainment area to attainment. This decision is based on Arkansas' demonstration that Crittenden County has met the criteria for attainment.