(1) All owners and operators of steel UST systems with corrosion protection shall comply with the following requirements to ensure that releases due to corrosion are prevented for as long as the UST system is used to store regulated substances:

(a) All corrosion protection systems must be operated and maintained to continuously provide corrosion protection to the metal components of that portion of the tank and piping that are in contact with the ground.

(b) All UST systems equipped with cathodic protection systems must be inspected for proper operation by a qualified cathodic protection tester in accordance with the following requirements:

(i) all cathodic protection systems must be tested within six months of installation and at least every three years thereafter; and

(ii) the criteria that are used to determine that cathodic protection is adequate as required by this rule must be in accordance with National Association of Corrosion Engineers Standard RP0285, "Corrosion Control of Underground Storage Tank Systems by Cathodic Protection."

(c) UST systems with impressed current cathodic protection systems must also be inspected every 60 days to ensure the equipment is running properly.

(d) For UST systems using cathodic protection, records of the operation of the cathodic protection must be maintained in accordance with ARM 17.56.305 to demonstrate compliance with the performance standards in this rule. These records must provide the following:

(i) the results of the last three inspections required in (1)(c); and

(ii) the results of testing from the last two inspections required in (1)(b).

(2) The department adopts and incorporates by reference the version in effect on July 1, 2006, of National Association of Corrosion Engineers Standard RP0285, "Corrosion Control of Underground Storage Tank Systems by Cathodic Protection," which sets forth cathodic protection system standards for prevention of corrosion on buried or submerged metallic UST systems, a copy of which may be obtained from NACE, International, P.O. Box 201009, Houston, TX 77216-1009, (281) 228-6200.