The operator shall:
(A) Grade, contour, or terrace the final slopes to a slope angle sufficient to achieve soil stability and control landslides, erosion, and sedimentation. Slopes with a slope angle of eighteen degrees or less shall be presumed sufficient. Highwalls retained as part of the intended future use shall not be regarded as final slopes; and
(B) Establish diversion ditches with controlled outlets on any final slopes sufficient to achieve soil stability and control landslides, erosion, and sedimentation.
Five Year Review (FYR) Dates: 9/14/2017 and 12/16/2022
Promulgated Under: 119.03
Statutory Authority: 1514.08
Rule Amplifies: 1514.02, 1514.08 , 1514.011
Prior Effective Dates: 3/24/75