; and (4) subject to any other terms and conditions as the Secretary considers appropriate to protect the interests of the United States. (c) Consideration (1) Consideration required As consideration for the conveyance under subsection (a), the County shall pay to the Secretary in cash an amount that is not less than the fair market value of the right, title, and interest conveyed under subsection (a), as determined by the Secretary based on an appraisal of the property. (2) Treatment of consideration received Consideration received by the Secretary under paragraph (1) shall be deposited in the account in the Treasury established under section 572(b) of title 40, United States Code, and shall be available in accordance with paragraph (5)(B)(ii) of such subsection. (d) Payment of costs of conveyance (1) Payment required The Secretary may require the County to cover all costs (except costs for environmental remediation of the property) to be incurred by the Secretary, or to reimburse the Secretary for costs incurred by the Secretary, to carry out the conveyance under subsection (a), including costs related to real estate due diligence and any other administrative costs related to the conveyance. If amounts paid by the County to the Secretary in advance exceed the costs actually incurred by the Secretary to carry out the conveyance under subsection (a), the Secretary shall refund the excess amount to the County. (2) Treatment of amounts received Amounts received under paragraph (1) as reimbursement for costs incurred by the Secretary to carry out the conveyance under subsection (a) shall be credited to the fund or account that was used to cover the costs incurred by the Secretary in carrying out the conveyance or to an appropriate fund or account currently available to the Secretary for the purposes for which the costs were paid. Amounts so credited shall be merged with amounts in such fund or account and shall be available for the same purposes, and to the same conditions and limitations, as amounts in such fund or