In this document, EPA is acting on revisions to the Tennessee State Implementation Plan (SIP) which were submitted on May 18, 1993, by Tennessee, through the Tennessee Department of Air Pollution Control (TDAPC), and contained revisions to chapter 1200-3-18 ``Volatile Organic Compounds (VOC).'' Due to the significance of the revisions, this revised chapter was submitted to replace the current chapter 1200- 3-18. These revisions were made to satisfy the VOC Reasonably Available Control Technology (RACT) ``Catch-Up'' requirements contained in the amended Clean Air Act (CAA). EPA is granting conditional approval, full approval or disapproval of the revisions as explained in detail in the Supplementary Information section of this document.