30 Tex. Admin. Code § 334.71
For releases discovered and reported to the executive director on or before August 31, 2003, the provisions of this subchapter are applicable to owners and operators of all underground storage tanks (USTs) and all petroleum product aboveground storage tanks (ASTs) unless otherwise specified in Subchapters A or F of this chapter (relating to General Provisions and Aboveground Storage Tanks, respectively). For releases reported to the agency on or after September 1, 2003, the provisions of this subchapter are applicable to owners and operators of all USTs and all petroleum product ASTs, except that Chapter 350 of this title (relating to Texas Risk Reduction Program) shall be used in lieu of §§334.78-334.81 of this title (relating to Site Assessment, Removal of Non-Aqueous Phase Liquids, Investigation for Soil and Groundwater Cleanup, and Corrective Action Plans, respectively).
Source Note:The provisions of this §334.71 adopted to be effective September 29, 1989, 14 TexReg 4714; amended to be effective September 23, 1999, 24 TexReg 7422; amended to be effective November 23, 2000, 25 TexReg 11442.