Approval and Promulgation of Air Quality Implementation Plans; Arkansas; Crittenden County Base Year Emission Inventory

The Environmental Protection Agency (EPA) is proposing to approve a revision to the Arkansas State Implementation Plan (SIP) submitted to meet the Clean Air Act (CAA) emissions inventory (EI) requirement for the Crittenden County ozone nonattainment area. EPA is approving the SIP revision because it satisfies the CAA EI requirement for Crittenden County under the 2008 8-hour ozone National Ambient Air Quality Standards (NAAQS). The inventory includes emission data for Nitrogen Oxides (NOx) and Volatile Organic Compounds (VOCs). EPA is approving the revisions pursuant to section 110 and part D of the CAA and EPA's regulations.