Ariz. Admin. Code § R18-12-233 - Repairs Allowed

A. Owners and operators of an UST system shall ensure that repairs will prevent releases due to structural failure or corrosion as long as the UST system is used to store regulated substances. The repairs shall meet the following requirements:

1. Repairs to an UST system shall be properly conducted in accordance with an applicable code of practice developed by a nationally recognized association or independent testing laboratory as specified in R18-12-281(L);

2. Repairs to a fiberglass-reinforced plastic tank may be made by the manufacturer's authorized representative or in accordance with the code of practice set forth in R18-12-281(M);

3. Any metal pipe sections and fittings that have released a regulated substance as a result of corrosion or other damage shall be replaced. Non-corrodible pipe and fittings may be repaired in accordance with the manufacturer's specifications.

B. Repairs to secondary containment areas of tanks and piping used for interstitial monitoring and to containment sumps used for interstitial monitoring of piping shall have the secondary containment tested for tightness according to the manufacturer's instructions, a code of practice developed by a nationally recognized association or independent testing laboratory, or according to requirements established by the Department within 30 days following the date of completion of the repair. All other repairs to tanks and piping shall be tightness tested in accordance with the specifications described in R18-12-243(C) and R18-12-244(B) within 30 days following the date of the completion of the repair unless one of the following procedures is employed:

1. The repaired tank is internally inspected in accordance with a code of practice developed by a nationally recognized association or an independent testing laboratory listed in R18-12-281(N);

2. The repaired portion of the UST system is monitored monthly for releases in accordance with a method specified in R18-12-243(D) through (I); or

3. Another test method is used that is determined by the Department to be no less protective of human health and the environment than those listed in subsections (B)(1) and (2).

C. Within six months following the repair of any cathodically protected UST system, the cathodic protection system shall be tested in accordance with R18-12-231(B) and (C) to ensure that it is operating properly.

D. Within 30 days following any repair to spill or overfill prevention equipment, the repaired spill or overfill prevention equipment shall be tested or inspected, as appropriate, in accordance with R18-12-235 to ensure it is operating properly.

D E. Owners and operators of an UST system shall maintain records of each repair until the UST system is permanently closed or undergoes a change-in-service pursuant to R18-12-271.

Notes

Ariz. Admin. Code § R18-12-233

Adopted effective July 30, 1996 (Supp. 96-3). Amended by final rulemaking at 25 A.A.R. 3123, effective 1/1/2020.