The Resource Conservation and Recovery Act, as amended (RCRA), allows EPA to authorize State hazardous waste management programs if EPA finds that such programs are equivalent and consistent with the Federal program and provide adequate enforcement of compliance. Title 40 of the Code of Federal Regulations (CFR) part 272 is used by EPA to codify its decision to authorize individual State programs and incorporates by reference those provisions of the State statutes and regulations that are subject to EPA's inspection and enforcement authorities as authorized provisions of the State's program. This final rule revises the codification of the Montana authorized program. In addition, today's document corrects errors made in the September 30, 2005 Federal Register authorization document for Montana.