Arizona Administrative Code › Title 18 - ENVIRONMENTAL QUALITY › Chapter 12 - DEPARTMENT OF ENVIRONMENTAL QUALITY - UNDERGROUND STORAGE TANKS › Article 2 - TECHNICAL REQUIREMENTS › Section R18-12-220 - Performance Standards for New UST Systems

Current through Register Vol. 30, No. 28, July 12, 2024
A. Owners and operators of a new UST system
				shall meet the requirements described in this Section in order to prevent
				releases due to structural failure, corrosion, or spills and overfills for as
				long as the UST system is used to store regulated substances. In addition,
				except for suction piping that meets the requirements of
				R18-12-241(C)(2)(a)
				through (e), tanks and piping installed or
				replaced after January 1, 2009 shall be secondarily contained and use
				interstitial monitoring in accordance with
				R18-12-243(G).
				Secondary contain, be able to contain regulated substances leaked from the
				primary containment until they are detected and removed and pre-vent the
				release of regulated substances to the environment at any time during the
				operational life of the UST system. For cases where the piping to be replaced
				exceeds the percentage in A.R.S. §
									49-1009(C),
				the entire piping run shall be secondarily contained.
B. A tank shall be properly designed and
				constructed, and any portion underground that routinely contains a regulated
				substance shall be protected from corrosion in accordance with a code of
				practice developed by a nationally recognized association or independent
				testing laboratory as specified below:
1. The
				tank is constructed of fiberglass-reinforced plastic. Compliance with this
				subsection may be determined in accordance with the performance standards set
				forth in
				R18-12-281(B);
2. The tank is constructed of steel and is
				cathodically protected, in accordance with one of the performance standards of
				R18-12-281(C),
				by all of the following:
a. The tank is
				coated with a suitable dielectric material;
b. The field-installed cathodic protection
				systems are designed by a corrosion expert;
c. The impressed current systems, if used,
				are designed to allow determination of current operating status as required in
				R18-12-231(C);
d. The cathodic protection systems are
				operated and maintained in accordance with
				R18-12-231.
3. The tank is constructed of steel and clad
				or jacketed with a non-corrodible material. Compliance with this subsection
				shall be determined in accordance with one of the performance standards set
				forth in
				R18-12-281(D).
4. The tank is constructed of metal without
				additional corrosion protection measures, and both of the following conditions
				are met:
a. The tank is 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;
b. Owners and operators maintain records that
				demonstrate compliance with the requirements of subsection (B)(4)(a) for the
				remaining operational life of the tank.
5. The tank construction and corrosion
				protection are determined by the Department to be designed to prevent the
				release or threatened release of any stored regulated substance in a manner
				that is no less protective of human health and the environment than the
				requirements of subsections (B)(1) through (4).