by the Secretary to carry out the conveyance, the Secretary shall refund the excess amount to the County. (2) Treatment of amounts received Amounts received as reimbursement under paragraph (1) shall be credited to the fund or account that was used to cover those costs incurred by the Secretary in carrying out the conveyance. Amounts so credited shall be merged with amounts in such fund or account, and shall be available for the same purposes, and subject to the same conditions and limitations, as amounts in such fund or account. (d) Environmental remediation To expedite the conveyance of the parcel of National Forest System land described in subsection (a), including improvements thereon, environmental remediation of the land by the Department of the Air Force shall be limited to the removal of the perimeter wooden fence, which was treated with an arsenic-based weatherproof coating, and treatment of soil affected by leaching of such chemical. (e) Description of property The exact acreage and legal description of the property to be conveyed under subsection (a) shall be determined by a survey satisfactory to the Secretary of Agriculture.