Approval and Promulgation of Air Quality Implementation Plans; Commonwealth of Pennsylvania; Enhanced Motor Vehicle Inspection and Maintenance Program

Riepilogo

This action proposes approval of the Commonwealth of Pennsylvania's August 21, 1998 submission to supplement its State Implementation Plan (SIP) revision for the enhanced motor vehicle emissions inspection and maintenance (I/M) program. The Commonwealth's August 1998 submission addresses seven minor, de minimus deficiencies. In addition, Pennsylvania submitted a demonstration of the effectiveness of its decentralized network, as required by the National Highway Systems Designation Act of 1995 (NHSDA). Approval of this submission will remove all remaining de minimus conditions imposed by EPA in its January 28, 1997 interim conditional approval of the Commonwealth of Pennsylvania's March 1996 enhanced I/M SIP revision. This action proposes approval of Pennsylvania's decentralized network effectiveness demonstration. Because EPA is proposing approval of that demonstration, as well as all remaining de minimus deficiencies related to Pennsylvania's enhanced I/M SIP, EPA hereby proposes to convert the interim approval of the Commonwealth's I/M SIP, granted under the NHSDA, to full approval. Because Pennsylvania must still provide specific information related to one condition of EPA's Jan