PURPOSE: This rule establishes minimum performance standards for the installation of deferred underground storage tanks.

PUBLISHER’S NOTE: The secretary of state has determined that the publication of the entire text of the material which is incorporated by reference as a portion of this rule would be unduly cumbersome or expensive. This material as incorporated by reference in this rule shall be maintained by the agency at its headquarters and shall be made available to the public for inspection and copying at no more than the actual cost of reproduction. This note applies only to the reference material. The entire text of the rule is printed here.

1. (1) No person may install an underground storage tank (UST) system listed in 10 CSR 26-2.010(3) for the purpose of storing regulated substances unless the UST system 10 CSR 26-2

(whether of singleor double-wall construction)—

1. (A) Will prevent releases due to corrosion or structural failure for the operational life of the UST system;
2. (B) Is cathodically protected against corrosion, constructed of noncorrodible material, steel-clad with a noncorrodible material, or designed in a manner to prevent the release or threatened release of any stored substance; and
3. (C) Is constructed or lined with material that is compatible with the stored substance.

1. (2) Notwithstanding section (1) of this rule, a UST system without corrosion protection may be installed at a site that is determined by a corrosion expert not to be corrosive enough to cause it to have a release due to corrosion during its operating life. Owners and operators must maintain records that demonstrate compliance with the requirements of this section for the remaining life of the tank.
2. (3) The determination in section (2) of this rule should comply with the following recommended practice: NACE International RP 0285-2002, Corrosion Control of Underground Storage Tank Systems by Cathodic Protection, revised 2002. This document is incorporated by reference without any later amendments or modifications. To obtain a copy contact NACE International, Box 218340, Houston, TX 77218-8340, (713) 492- 0535, www.nace.org.

AUTHORITY: section 319.105, RSMo 2000 and section 319.137, RSMo Supp. 2010.* This rule originally filed as 10 CSR 20-10.011. Original rule filed April 2, 1990, effective Sept. 28, 1990. Moved and amended: Filed April 15, 2011, effective Dec. 30, 2011. *Original authority: 319.105, RSMo 1989 and 319.137, RSMo 1989, amended 1993, 1995, 2004.