Air Plan Approval; Alabama: Volatile Organic Compounds

The Environmental Protection Agency (EPA) is approving a portion of a revision to the Alabama State Implementation Plan (SIP) submitted by the Alabama Department of Environmental Management (ADEM) on May 8, 2013. The revision modifies the definition of ``volatile organic compounds'' (VOC). Specifically, the revision adds one compound to the list of those excluded from the VOC definition on the basis that this compound makes a negligible contribution to tropospheric ozone formation. This action is being taken pursuant to the Clean Air Act (CAA or Act).