48 C.F.R. § 223.7104
(a) The prohibition of 10 U.S.C. 2692 does not apply to any of the following:
(10) The treatment and disposal of any toxic or hazardous materials not owned by DoD, if the Secretary of the military department concerned determines that the material is required or generated in connection with the authorized and compatible use of a facility of that military department and the Secretary enters into a contract or agreement with the prospective user that—