Or. Admin. Code § 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.
Notes
Stat. Auth.:ORS 468.020
Stats. Implemented:ORS 468.020
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