Approval and Promulgation of Air Quality Implementation Plans; Virginia: Approval of Group III SIP and Coke Oven Rules for Particulate Matter

EPA is approving two State Implementation Plan (SIP) revisions submitted by the Commonwealth of Virginia. Approval of Virginia's Group III SIP establishes an ambient air quality standard for particulate matter smaller than 10 micrometers in diameter (PM-10); provides regulatory definitions for ``particulate matter,'' ``particulate matter emissions,'' ``PM10,'' ``PM10 emissions,'' and ``total suspended particulate matter'' (TSP); and modifies rules regarding air pollution episodes to include PM-10 as well as TSP action levels. Approval of the coke oven provisions provides for limits on mass emissions, opacity, and fugitive dust from nonrecovery coke works. This action is a result of existing particulate matter planning requirements and is not related to current EPA rulemaking regarding proposed revisions to National Ambient Air Quality Standards (NAAQS) for particulate matter. There are no PM-10 nonattainment areas in the Commonwealth of Virginia. This action is being taken under section 110 of the Clean Air Act.