Or. Admin. Code § 340-043-0090

Current through Register Vol. 63, No. 12, December 1, 2024

Section 340-043-0090 - Control of Surface Water Run-On and Run-Off

(1) Surface water run-on and run-off shall be controlled such that it will not endanger the facility or become contaminated by contact with process materials or loaded with sediment. The control systems shall be designed to accommodate a 100-year, 24-hour storm event, or any other defined climatic event that is more appropriate to the site, and be placed so as to allow for restoration of the natural drainage network, to the maximum extent practicable, upon facility closure.

(2) All mined materials shall be properly placed and protected from surface water and precipitation so as not to be eroded and contribute sediment to site stormwater run-off or to otherwise contaminate surface water.

DEQ 23-1992, f. & cert. ef. 9-8-92

Stat. Auth.:ORS 468.020

Stats. Implemented:ORS 468.020