ARM 17.56.104. TANK STANDARDS FOR EXEMPTED UST SYSTEMS

(1) No person may install an UST system listed in ARM 17.56.102(4) or (5) for the purpose of storing regulated substances unless the UST system (whether of single- or double-wall construction): (a) will prevent releases due to corrosion or structural failure for the operational life of the UST system; (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 (c) is constructed or lined with material that is compatible with the stored substance.