(a) The approval of the commission is required for preliminary plans for construction of levees and other improvements other than those which are exempt under Texas Water Code, §16.236. The procedure for submission and approval of preliminary plans for levees and other improvements other than those which are exempt is set forth in Subchapter C of this chapter (relating to Approval of Levees and Other Improvements.)     
      (b) The review and/or approval of the executive director is required for final plans for levees and other improvements. The procedure for submission, review, and approval, if required, is set forth in §301.38 of this title (relating to Procedures Subsequent to Approval of Preliminary Plans).     
     Source Note:        The provisions of this §301.4 adopted to be effective May 26, 1986, 11 TexReg 2245; amended to be effective May 5, 2005, 30 TexReg 2553