a. All cell units shall be reclaimed as they are worked to the extent that they shall be reasonably natural and reasonably lacking in hazard.
b. All slopes and banks shall be graded to angles which do not exceed those found in the natural topography of surrounding areas except that in no instance shall slopes exceed three feet horizontal to one foot vertical.
c. All topsoil shall be stockpiled on the premises and promptly redistributed on abandoned areas or where extraction operations have been substantially discontinued for any period in excess of one year. Such areas shall than be seeded to lessen erosion.
d. An operator shall remove all worthless debris and rubbish from the mining area within six months of the date of termination of operations.
(Ord. 216. Passed 12-17-91.)