Tex. Nat. Res. Code § 61.213

Before a person excavates, takes, removes, or carries away sand, marl, gravel, or shell from land located on an exposed island or peninsula bordering on the Gulf of Mexico or from land located within 1,500 feet of a mainland public beach that is located outside the boundaries of an incorporated city, town, or village, he must submit a written application to the commissioners court of the county in which the excavation, taking, removal, or carrying away is to take place.