Ariz. Admin. Code § R18-12-232 - Compatibility

A. Owners and operators shall use an UST system made of or lined with materials that are compatible with the substance stored in the UST system. Compliance with this Section may be determined in accordance with the code of practice in R18-12-281(K).

B. Owners and operators shall notify the Department at least 30 days prior to switching to a regulated substance containing greater than 10 percent ethanol, greater than 20 percent biodiesel, or any blend of isobutanol. In addition, owners and operators with UST systems storing these regulated substances shall meet one of the following:

1. Demonstrate compatibility of the UST system (including the tank, piping, containment sumps, pumping equipment, release detection equipment, spill equipment, and overfill equipment). Owners and operators may demonstrate compatibility of the UST system by using one of the following options:

a. Certification or listing of UST system equipment or components by a nationally recognized, independent testing laboratory for use with the regulated substance stored; or

b. Equipment or component manufacturer approval. The manufacturer's approval shall be in writing, indicate an affirmative statement of compatibility, specify the range of biofuel blends the equipment or component is compatible with, and be from the equipment or component manufacturer; or

2. Use another option determined by the Department to be no less protective of human health and the environment than the options listed in subsection (B)(1) of this Section.

C. Owners and operators shall maintain records in accordance with R18-12-234(B) documenting compliance with subsection (B) of this Section for as long as the UST system is used to store the regulated substance.

Notes

Ariz. Admin. Code § R18-12-232

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