EPA is taking direct final action to convert a conditional approval of specified provisions of the Ohio state implementation plan (SIP) to a full approval. Ohio submitted a request to approve revised particulate matter (PM) rules on February 23, 2012. The PM rule revisions being approved establish work practices for coating operations, add a section clarifying that sources can be subject to both stationary source and fugitive source PM restrictions, and add a PM emission limitation exemption for jet engine testing. Pursuant to a state commitment underlying a previous conditional approval of this rule, the revised rule provides that any exemption from the work practice requirements that the state grants to large coating sources must be submitted to EPA for approval.