30 Tex. Admin. Code § 299.31
As soon as possible after completion of construction, the owner or his engineer shall submit to the executive director a complete set of record drawings of the project for filing with the permanent records of the department. One or more permanent reference mark(s) shall be established for future use near but separate from the project. Accurate location(s) and elevation(s) above mean sea level shall be shown on the record drawings.
Source Note:The provisions of this §299.31 adopted to be effective May 13, 1986, 11 TexReg 1978.