Louisiana Revised Statutes Tit. 48, § 443.1. Minable minerals

Before exercising the rights of expropriation provided for in this Part, the state or any of its departments, except the Department of Transportation and Development, offices, boards, commissions, agencies, or instrumentalities, except political subdivisions but specifically including levee districts and their boards, shall, upon request of the owner whose property is to be taken, provide the owner with the results of tests by the Louisiana Geological Survey that show whether or not sand or gravel is present in the property. The test shall be done at no cost to the property owner.