The South Carolina Department of Health and Environmental Control (SCDHEC or State agency) has requested that EPA approve the "adopt-by-reference" mechanism for delegation of New Source Performance Standards (NSPS). The purpose of the State agency request for approval of its delegation mechanism is to streamline existing administrative procedures by eliminating any unnecessary steps involved in the federal delegation process. With this NSPS delegation mechanism in place, an NSPS promulgated by EPA will become effective in South Carolina on the date the NSPS is adopted if the State agency adopts the NSPS without change. No further State requests for delegation will be necessary. Likewise, no further Federal Register documents will be published. However, if an NSPS regulation is adopted by the State agency with changes, EPA reserves the right to review and comment on the revised NSPS. The State is required to notify EPA of the revisions. If EPA determines that the revisions are equivalent to the federal NSPS then delegation will occur and notice will be published in the Federal Register. EPA reserves the right to implement the federal NSPS directly and continues to retain concurrent enforcement authority. On October 19, 1976, the EPA initially delegated the authority for implementation and enforcement of the NSPS program to the State of South Carolina. The EPA's review of the State agency's pertinent laws, rules, and regulations indicate that adequate and effective procedures are in place for the implementation and enforcement of these Federal standards. This document was written to inform the public of the State agency's new mechanism for delegation (adopt-by-reference) of NSPS.