Any person who seeks approval of the commission under Texas Water Code, § 16.236, for construction of any levee or other improvement shall file an application with the executive director, together with a set of preliminary plans for the levee or other improvement, in duplicate. The preliminary data so submitted must be in sufficient detail to permit the executive director to evaluate the project. Ordinarily, existing maps and information are adequate for the development of acceptable preliminary plans without the necessity of extensive site clearing or detailed surveys. The application and preliminary plans must comply with Subchapter D of this chapter (relating to Notice and Hearing).
30 Tex. Admin. Code § 301.31