Texas Natural Resources Code - NAT RES § 201.012. Issuance of Permit

(1) a detailed statement giving the reasons and objectives for the excavation, removal, or alteration and the benefits expected to be obtained from the contemplated work;

(2) data and results of any completed excavation;

(3) the prior written permission from the state agency which manages the site of the proposed excavation;

(4) a sworn statement that he will carry the permit while exercising the privileges granted;  and

(5) any other reasonable information which the General Land Office may prescribe.