Ariz. Admin. Code § 18-9-C302

Current through Register Vol. 31, No. 2, January 10, 2025

Section R18-9-C302 - 2.02 General Permit: Intermediate Stockpiles at Mining Sites

A. A 2.02 General Permit allows for intermediate stockpiles not qualifying as inert material under A.R.S. § 49-201(19) at a mining site.

B. Notice of Intent to Discharge. In addition to the Notice of Intent to Discharge under R18-9-A301(B), an applicant shall submit the construction and operation specifications used to satisfy the requirements in subsection (C)(1).

C. Design and operational requirements.

1. An applicant shall design, construct, and operate the stockpile so that it does not impound water. An applicant may rely on stormwater run-on controls or facility design features, such as drains, or both.

2. An applicant shall direct storm runoff contacting the stockpile to a mine pit or a facility covered by an individual or general permit.

3. A permittee shall maintain any engineered feature of the facility in good working condition.

4. A permittee shall visually inspect the facility at least quarterly and repair any defect as soon as practical.

5. A permittee shall not add hazardous substances to the stockpiled material.

D. Closure requirements. In addition to the closure requirements in R18-9-A306, the following apply:

1. If an intermediate stockpile covered under a 2.02 General Permit is permanently closed, a permittee shall remove any remaining material, to the greatest extent practical, and regrade the area to prevent impoundment of water.

2. The permittee shall submit a narrative description of closure measures to the Department within 30 days after closure.

Ariz. Admin. Code § R18-9-C302

New Section adopted by final rulemaking at 7 A.A.R. 235, effective January 1, 2001 (Supp. 00-4). Amended by final rulemaking at 11 A.A.R. 4544, effective November 12, 2005 (05-3).