An owner or operator may satisfy the requirements as provided in § 37.31 of this title (relating to Submission of Documents), except the owner or operator required by this chapter to provide financial assurance for corrective action must submit an originally signed financial assurance mechanism no later than 120 days after the corrective action remedy has been selected. The signed financial assurance mechanism must be in effect when submitted.
30 Tex. Admin. Code § 37.8051