The State of Tennessee and Nashville-Davidson County, Tennessee have requested that EPA delegate authority for implementation and enforcement of existing New Source Performance Standards (NSPS) which have been previously adopted by the State, but have remained undelegated by EPA, and to approve the mechanism for delegation (automatic) of future NSPS. The purpose of the agency requests for approval of their delegation mechanism is to streamline the existing administrative procedures by eliminating unnecessary steps involved in taking delegation of federal NSPS regulations. With the new NSPS delegation mechanism in place, once a new or revised NSPS is promulgated by EPA, delegation of authority from EPA to the Tennessee Department of Environment and Conservation and the Metropolitan Health Department of Nashville and Davidson County will become effective on the date the NSPS is promulgated. No further State or local requests for delegation will be necessary. Likewise, no further Federal Register notices will be published. The EPA's review of each of the agencies' 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 delegations that were made to the above mentioned agencies for which a Federal Register notice was not previously written and to inform the public of the agencies' new mechanism for delegation of future NSPS.