Approval and Promulgation of Implementation Plans, Tennessee: Approval of Revisions to the Knox County Portion of the Tennessee SIP Regarding Use of LAER for Major Modifications and Revisions to the Tennessee SIP Regarding the Coating of Miscellaneous Metal Parts

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The EPA proposes to take action on revisions to Sections 46.2 and 46.3.A. of the Knox County portion of the Tennessee State Implementation Plan (SIP) which were submitted by the Tennessee Department of Air Pollution Control (TDAPC), on May 23, 1995, and November 13, 1998, for purposes of revising the definition for Volatile Organic Compounds (VOC) and requiring the use of Lowest Achievable Emission Rate (LAER) for major modifications to existing sources of VOC. The EPA also proposes to approve revisions to the Tennessee SIP which were submitted by TDAPC on February 12, 1999, and May 17, 1999, for purposes of revising Rule 1200-3-18-.20 (Coating of Miscellaneous Metal Parts) to include a standard for the touch-up of heavy-duty trucks and revise the definition of ``high performance architectural coating.'' In the Final Rules Section of this Federal Register, the EPA is approving the State's SIP revision as a direct final rule without prior proposal because the Agency views this as a noncontroversial submittal and anticipates no adverse comments. A detailed rationale for the approval is set forth in the direct final rule. If no adverse comments are received in response to this action,