30 Tex. Admin. Code § 37.8021
In addition to the requirements of this subchapter, owners or operators required to demonstrate for closure, post closure, or corrective action must comply with Subchapters A, B, C, and D of this chapter (relating to General Financial Assurance Requirements; Financial Assurance Requirements for Closure, Post Closure, and Corrective Action; Financial Assurance Mechanisms for Closure, Post Closure, and Corrective Action; and Wording of the Mechanisms for Closure, Post Closure, and Corrective Action), except that § 37.131 of this title (relating to Annual Inflation Adjustments to Current Cost Estimates) shall be modified to mean annual inflation adjustments are required during the active life of the facility and during the post closure care period.
30 Tex. Admin. Code § 37.8021