Ariz. Admin. Code § 18-13-1609

Current through Register Vol. 30, No. 45, November 8, 2024

Section R18-13-1609 - Treatment Facility

A. The owner or operator of a PCS treatment facility shall obtain approval from the Department prior to commencement of construction or operation and shall comply with all of the following:

1. Not dilute PCS as a method of treatment, except as allowed in the approved plan for the facility;

2. Treat the PCS or, if the chosen treatment process fails to remediate the soil to below the regulatory thresholds, dispose of the PCS pursuant to R18-13-1613.

3. Sample the treated soil and provide the results of the sampling to the Department within 45 days of completion of the treatment.

B. A PCS treatment facility designed in accordance with R18-13-1608(B)(1) shall comply with the following specific design criteria:

1. At a minimum, a containment system shall include a clay, synthetic, concrete, or asphalt liner component which is placed upon a foundation or prepared subgrade which supports the liner, and resists pressure gradients above and below the liner, to prevent failure due to settlement, compression, or uplift.

2. During construction or installation of a containment system, liners and cover systems shall be inspected for uniformity, damage, and imperfections. Immediately after construction or installation is completed, and prior to placement of PCS within the containment system, the systems shall be checked for both of the following:

a. Synthetic liners and covers shall be inspected to ensure tight seams and joints and the absence of tears, punctures, or blisters.

b. Concrete, asphalt, and soil-based liners and covers shall be inspected for imperfections including lenses, cracks, channels, root holes, or other structural non-uniformities that may cause an increase in the permeability of the liner or cover.

3. The liner component shall consist of one of the following:

a. A synthetic liner which is compatible with the waste and which has a minimum 6" buffer layer of sand or soil between the liner and the PCS.

b. A compacted soil or admixed liner provided with a minimum 6" buffer layer of sand or soil between the liner and the PCS.

c. An asphalt or reinforced concrete liner which is not in the drainage area of a dry well and is free of unsealed cracks and seams.

4. Aeration equipment shall be limited to the area above the buffer layers indicated in subsections (B)(2)(a) and (b).

5. The owner or operator of the facility shall utilize protective measures to ensure containment system integrity during placement, treatment, or removal of the PCS.

6. PCS stored at a treatment facility prior to treatment shall be stored in accordance with the requirements of R18-13-1611.

Ariz. Admin. Code § R18-13-1609

Recodified from R18-8-1609 at 8 A.A.R. 5172, effective November 27, 2002 (Supp. 02-4).