Ariz. Admin. Code § R18-12-210 - Applicability

A. The requirements of this Article apply to all owners and operators of an UST system, except as otherwise provided in subsections (B) and (C).

1. Previously deferred UST systems. Airport hydrant fuel distribution systems, UST systems with field-constructed tanks, and UST systems that store fuel solely for use by emergency power generators shall meet the requirements of this Chapter as follows:

a. Airport hydrant fuel distribution systems and UST systems with field-constructed tanks shall meet the requirements in Article 9.

b. UST systems that store fuel solely for use by emergency power generators installed on or before January 1, 2020 shall meet the release detection requirements of R18-12-240 through R18-12-245 on or before March 1, 2020.

c. UST systems that store fuel solely for use by emergency power generators installed after January 1, 2020 shall meet all applicable requirements of this Chapter at installation.

2. Any UST system listed in subsection (C) of this Section shall meet the requirements of R18-12-211.

B. Excluded UST systems. The following UST systems are excluded from the requirements of this Article:

1. Any UST system holding hazardous wastes which are listed or identified under Subtitle C of the Solid Waste Disposal Act, or a mixture of such hazardous waste and other regulated substances;

2. Any wastewater treatment tank system that is part of a wastewater treatment facility regulated under Section 402 or 307(b) of the Clean Water Act;

3. Equipment or machinery that contains regulated substances solely for operational purposes such as hydraulic lift tanks and electrical equipment tanks;

4. Any UST system with a capacity of 110 gallons or less;

5. Any UST system that contains a de minimis concentration of regulated substances;

6. Any emergency spill or overflow containment UST system that is expeditiously emptied after use.

C. Partially excluded UST systems. Except as noted in subsection (C)(2) below, only R18-12-101, R18-12-210, R18-12-211, R18-12-222, R18-12-261 through R18-12-264.01, and the provisions of A.R.S. §§ 49-1001.01 and 49-1005 and the rules promulgated thereunder apply to:

1. Wastewater treatment tank systems other than those specified in subsection (B)(2);

2. Aboveground storage tanks associated with:

a. Airport hydrant fuel distribution systems regulated under Article 9.

b. UST systems with field-constructed tanks regulated under Article 9.

2 3. Any UST systems containing radioactive material that are regulated under the Atomic Energy Act of 1954, 42 U.S.C. §§ 2011 et seq.;

3 4. Any UST system that is part of an emergency generator system at nuclear power generation facilities licensed by the Nuclear Regulatory Commission and subject to Nuclear Regulatory Commission requirements regarding design and quality criteria, including but not limited to 10 CFR 50 ;

4. Airport hydrant fuel distribution systems;

5. UST systems with field-constructed tanks.

D. R18-12-240 through R18-12-245 do not apply to any UST system that stores fuel solely for use by emergency power generators.

Notes

Ariz. Admin. Code § R18-12-210

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