Approval and Promulgation of Air Quality Implementation Plans: South Carolina; Negative Declarations for Groups I, II, III and IV Control Techniques Guidelines; and Reasonably Available Control Technology

EPA is proposing to approve several State Implementation Plan (SIP) revisions submitted by the South Carolina Department of Health and Environmental Control (SC DHEC). These revisions establish reasonably available control technology (RACT) requirements for the three major sources located in the portion of York County, South Carolina that is within the bi-state Charlotte-Gastonia-Rock Hill, North Carolina-South Carolina 1997 8-hour ozone nonattainment area that either emit volatile organic compounds, nitrogen oxides or both. The bi-state Charlotte-Gastonia-Rock Hill 1997 8-hour ozone nonattainment area is hereinafter referred to as the "bi-state Charlotte Area." In addition, South Carolina's SIP revisions include negative declarations for certain source categories for which EPA has control technique guidelines, meaning that SC DHEC has concluded that no such sources are located in that portion of the nonattainment area. EPA has evaluated the proposed revisions to South Carolina's SIP, and has preliminarily concluded that they are consistent with statutory and regulatory requirements and EPA guidance.