Approval and Promulgation of Air Quality Implementation Plans; Delaware; Approval of Miscellaneous Revisions

EPA is taking direct final action on revisions to the Delaware State Implementation Plan (SIP). In this action, EPA is approving revisions to various Delaware rules and definitions which have historically been State-enforceable, and which Delaware had formally submitted as SIP revisions, but which EPA had not yet taken formal action. Provisions include control of particulate matter from petroleum refining operations, control of sulfur dioxide emissions from sulfuric acid manufacturing operations, and definitions and provisions associated with source monitoring, recordkeeping and reporting. The intended effect of this approval action is to ensure that the federally-approved versions of these Delaware provisions conform with the state-enforceable provisions. EPA is approving these revisions to the Delaware SIP in accordance with the requirements of the Clean Air Act