Sec. 26.3476.  SECONDARY CONTAINMENT REQUIRED FOR TANKS LOCATED OVER CERTAIN AQUIFERS.  (a)  In this section, "secondary containment" means a method by which a secondary wall or barrier is installed around an underground storage tank system in a manner designed to prevent a release of a regulated substance from migrating beyond the secondary wall or barrier before the release can be detected.  A secondary containment system may include an impervious liner or vault surrounding a primary tank or piping system or a double-wall tank or piping system.
(b)  An underground storage tank system, at a minimum, shall incorporate a method for secondary containment if the system is located in:
(1)  the outcrop of a major aquifer composed of limestone and associated carbonate rocks of Cretaceous age or older; and
(2)  a county that:
(A)  has a population of at least 1.2 million and relies on groundwater for at least 75 percent of the county's water supply; or
(B)  has a population of at least 75,000 and is adjacent to a county described by Paragraph (A).
(c)  Section 26.3475(e) applies to an underground storage tank system that is subject to this section as if a violation of this section were a violation of Section 26.3475.
(d)  Notwithstanding Section 26.359(b), a political subdivision under this section may adopt standards for the containment of underground storage tank systems.
Added by Acts 2001, 77th Leg., ch. 965, Sec. 13.01, eff. Sept. 1, 2001.
Amended by: 
Acts 2023, 88th Leg., R.S., Ch. 644 (H.B. 4559), Sec. 279, eff. September 1, 2023.