The contractor shall provide all personnel, equipment, tools, materials, vehicles, supervision and services necessary to clean exhaust hoods, adjoining ducts and all equipment related to the exhaust systems in a satisfactory manner. All exhaust hoods, ducts, and related equipment are located within Civil Engineering Squadron (CES) maintained facilities at Malmstrom Air Force Base (MAFB), Montana and the Missile Alert Facilities (MAFs) in the surrounding Missile Complex. The contractor shall perform to the standards in the contract as well as all Federal, State, local, and commercial standards. The contractor shall follow the cleaning schedule in Appendix A of the performance work statement issued with the solicitation. This acquisition will consist of a base and four option years.