43 C.F.R. § 2743.2
(a) Public lands may be conveyed for the purpose of solid waste disposal or for any other purpose that the authorized officer determines may include the disposal, placement, or release of any hazardous substance subject to the following provisions:
(5) The authorized officer shall investigate the lands covered by an application to determine whether or not any hazardous substance is present. The authorized officer will require full reimbursement from the applicant for the costs of the investigation. The authorized officer may, in his or her discretion, make an exception to the requirement of full reimbursement if the applicant demonstrates that such costs would result in undue hardship. The investigation shall include but not be limited to: