43 Tex. Admin. Code § 2.308
This MOU shall be reviewed and updated no later than January 1, 2017. TxDOT and TCEQ by rule shall adopt the MOU and all revisions to the MOU. If a change in state or federal law or a change in the SIP necessitates a change in this MOU, then representatives from both TxDOT and TCEQ will meet to work out a mutually agreeable amendment to the MOU.
Source Note:The provisions of this §2.308 adopted to be effective May 16, 2013, 38 TexReg 2859.