Ariz. Admin. Code § 18-13-1608

Current through Register Vol. 30, No. 50, December 13, 2024

Section R18-13-1608 - General Design and Performance Standards

A. A facility which receives PCS for treatment, storage, or disposal shall be designed and operated to ensure compliance with the following performance standards relating to aquifer protection:

1. Pollutants discharged shall in no event cause or contribute to a violation of Aquifer Water Quality Standards, at the applicable point of compliance, or, if the facility is a municipal solid waste landfill, it shall comply with the requirements of A.R.S. § 49-761.01(C).

2. Any pollutant discharged shall not further degrade, at the applicable point of compliance, the quality of any aquifer that already violates an Aquifer Water Quality Standard for that pollutant.

B. A facility which receives PCS for treatment, storage, or disposal shall meet the general design criteria of either subsection (B)(1) or (2) as follows:

1. The PCS shall be held within a containment system designed and constructed to preclude the migration of contaminants into subsurface soil, groundwater, or surface water. The containment system shall meet the following criteria:

a. Maintain a maximum permeability coefficient of no more than 1 x 10^-7 cm/sec;

b. Be designed to provide structural integrity throughout the life of the facility;

c. Be designed in accordance with the applicable design criteria set forth in subsection (C) of this Section and R18-13-1609 through R18-13-1613; or

2. An alternative design shall contain, at a minimum, all of the following and shall demonstrate that the design will limit discharges listed in A.R.S. § 49-243(D) to the maximum extent practicable:

a. The hydrogeologic setting of the facility and the capacity of the liner and soils to preclude discharge to groundwater or surface water;

b. The operating methods, processes, or other alternatives to be used at the facility;

c. Additional factors which would influence the quality and mobility of the leachate produced and the potential for that leachate to migrate to groundwater or surface water.

C. A PCS treatment, storage, or disposal facility shall meet the following general design criteria:

1. The facility shall be designed to prevent run-on and run-off. The design shall provide run-on control for the peak discharge from a 24-hour, 25-year storm event. Run-off shall be collected and controlled for at least the water volume resulting from a 24-hour, 25-year storm event.

2. The facility shall not restrict the flow of the 100-year floodplain, reduce temporary water storage capacity of the floodplain, or be maintained in a manner which results in a washout or inundation of the PCS.

3. The owner or operator shall control public access and shall prevent unauthorized vehicular traffic and illegal dumping.

4. The owner or operator shall manage any standing water that has come into contact with the PCS in accordance with rules promulgated pursuant to A.R.S. § 49-761 et seq.

D. A facility which manages PCS in accordance with the requirements of this Article shall be exempt from the aquifer protection permit requirements in accordance with A.R.S. § 49-250(B)(21).

E. A facility which has been issued an aquifer protection permit from the Department shall be exempt from the requirements of subsections (A) and (B) of this Section but shall comply with the requirements of subsection (C).

Ariz. Admin. Code § R18-13-1608

Recodified from R18-8-1608at 8 A.A.R. 5172, effective November 27, 2002 (Supp. 02-4). Amended by final expedited rulemaking at 27 A.A.R. 57, effective 1/5/2021.