76 FR 3023
EPA is approving a State Implementation Plan (SIP) revision submitted by the Commonwealth of Virginia. This SIP revision consists of amendments to the Commonwealth's existing regulations in order to clarify and recodify provisions covering case-by-case reasonably available control technology (RACT), as well as to add the 1997 8-hour ozone national ambient air quality standard (NAAQS) RACT requirements to the Commonwealth's regulations. This action is being taken under the Clean Air Act (CAA).