1. (a) Purpose. The purpose of this subchapter is to establish the criteria by which target concentrations are established for the cleanup of leaking storage tank site releases discovered and reported to the agency on or before August 31, 2003.
2. (b) Applicability. For releases which are discovered and reported to the agency on or before August 31, 2003, the provisions of this subchapter are applicable to owners and operators of all underground storage tanks (USTs) and petroleum product aboveground storage tanks (ASTs) unless otherwise specified in Subchapters A and F of this chapter (relating to General Provisions and Aboveground Storage Tanks, respectively). These rules supersede previous cleanup guidelines as published in the January 1990, Guidance Manual for LPST Cleanups in Texas. All leaking storage tank cases which are not eligible for closure pursuant to the cleanup guidelines as published in the January 1990, Guidance Manual for LPST Cleanups in Texas as of November 8, 1995 shall be reevaluated by the owner and operator under this rule to establish target concentrations unless the agency has provided written approval of a remediation plan to clean a site to a specific numeric target concentration and the remediation plan has been initiated prior to November 8, 1995. For releases reported to the agency on or after September 1, 2003, the provisions of Chapter 350 of this title (relating to Texas Risk Reduction Program) are applicable to owners and operators of all USTs and petroleum product aboveground storage tanks (ASTs) unless otherwise specified in Subchapters A and F of this chapter in place of the provisions of this subchapter.
3. (c) Deadlines. For sites where the release was reported to the agency on or before December 22, 1998, the deadlines detailed in §334.71(b) of this title (relating to Applicability and Deadlines) apply.

Source Note:The provisions of this §334.201 adopted to be effective November 8, 1995, 20 TexReg 8800; amended to be effective September 23, 1999, 24 TexReg 7422; amended to be effective November 23, 2000, 25 TexReg 11442; amended to be effective April 2, 2002, 27 TexReg 2522.