30 Tex. Admin. Code § 37.141
Whenever the closure cost estimate increases to an amount greater than the amount being provided in the financial assurance mechanism(s) as a result of changes in closure activities, the owner or operator, within 30 days after the increase, must either cause the amount of the mechanism to be increased and submit evidence of such increase to the executive director, or obtain additional financial assurance in accordance with Subchapter C of this chapter (relating to Financial Assurance Mechanisms for Closure) to cover the increase and receive approval by the executive director.
Source Note:The provisions of this §37.141 adopted to be effective December 30, 1996, 21 TexReg 12297.