EPA is approving revisions to the Tennessee State Implementation Plan (SIP) submitted on June 21, 1993, and June 22, 1993, by the State of Tennessee, through the Tennessee Department of Environment and Conservation (DEC). The submittal of June 21, 1993 revises Chapter 1200-3-14 Control of Sulfur Dioxide Emissions and the submittal of June 22, 1993 revises Chapter 1200-3-10 Required Sampling, Recording and Reporting. On December 17, 1993, the Memphis Shelby County Health Department, through the Tennessee DEC, submitted revisions to Section 16-85 of the Memphis Shelby County Portion of the Tennessee SIP which adopt by reference revisions to Chapter 1200-3-10 of the Tennessee SIP. The intended effect of this revision is to clarify certain provisions and ensure consistency with the Clean Air Act.