When a refuse pile is to be abandoned, the District Manager shall be notified in writing, and if he determines it can present a hazard, the refuse pile shall be abandoned in accordance with a plan submitted by the operator and approved by the District Manager. The plan shall include a schedule for its implementation and describe provisions to prevent burning and future impoundment of water, and provide for major slope stability.
30 C.F.R. §77.215-4
Secs. 101 , 508 , Pub. L. 91-173 , 83 Stat. 745, 803 (30 U.S.C. 811 , 957 ), Pub. L. No. 96-511 , 94 Stat. 2812 (44 U.S.C. 3501 et seq.)