La Paz County Land Conveyance Act This bill directs the Department of the Interior, after receiving a request from La Paz County, Arizona, to convey to the county, without consideration, 8,000 acres of specified federal land. The federal land conveyed under this bill: (1) may be used by the county for any public purposes consistent with the Recreation and Public Purposes Act, and (2) shall not be disposed of by the county. The county shall pay or reimburse Interior, as appropriate, for the reasonable transaction and administrative personnel costs associated with such conveyance. The bill declares that the United States is released from any liability arising from any hazardous substance existing on the federal land before such conveyance.