Approval and Promulgation of Implementation Plans; Indiana

On March 23, 1994, the State of Indiana requested a revision to the Indiana State Implementation Plan (SIP) for lead, in accordance with part D, title I requirements of the Clean Air Act (the Act) for the Marion County lead nonattainment area. Supplemental information was received on September 21, 1994. The submittal provides for the control of both stack and fugitive emissions by requiring, among other things, revised emission limitations, improved monitoring, building enclosures, an amended fugitive lead dust plan, and contingency measures in the event that subsequent violations of the lead National Ambient Air Quality Standard (NAAQS) occur. USEPA made a finding of completeness in a letter dated September 23, 1994. Therefore, because the submittal contains all the necessary elements under part D, USEPA is approving it. In the proposed rules section of this Federal Register, USEPA is proposing approval of and soliciting public comment on this requested SIP revision. If adverse comments are received on this action, USEPA will withdraw this final rule and address the comments received in response to this action in a final rule on the related proposed rule which is being published in the proposed rules section of this Federal Register. A second public comment period will not be held. Parties interested in commenting on this action should do so at this time.