GMC Delco Remy (“GMC”) seeks review of a permit modification of the federal portion of a permit issued by U.S. EPA Region V, under the 1984 Hazardous and Solid Waste Amendments (“HSWA”) to the Resource Conservation and Recovery Act of 1976 (“RCRA”), 42 U.S.C. §§ 6901-6992k. GMC’s original permit was issued in 1990 and was comprised of both federal and State portions. As a result of the closure of the active regulated hazardous waste management unit at the facility, the State portion of the RCRA permit was not renewed and thus terminated at the end of its term.