If the property is not transferred to a Federal agency or disposed of during the 15-month period mentioned in Sec. 102-75.970, then the disposal agency must pay or reimburse the landholding agency for protection and maintenance expenses incurred from the expiration date of said time period to final disposal, unless--
(a) There is no written agreement between the landholding agency and the disposal agency specifying the maximum amount of protection and maintenance expenses for which the disposal agency is responsible;
(b) The disposal agency's appropriation, as authorized by Congress, does not contain a provision to allow for payment and/or reimbursement of protection and maintenance expenses; or
(c) The delay is caused by an Executive agency's request for an exception from the 100 percent reimbursement requirement specified in Sec. 102-75.205. In this latter case, the requesting agency becomes responsible for protection and maintenance expenses incurred because of the delay.