To guarantee the restoration, rehabilitation and reclamation of mined-out areas, every applicant granted a mining permit as herein provided shall furnish a performance bond running to the county as a guarantee that such applicant, in restoring, reclaiming and rehabilitation such land, shall within a reasonable time and to the satisfaction of the County Commissioners, meet the following minimum requirements.
(A) All excavation shall be made either to a water producing depth, such depth to be not less than five feet below water mark, or shall be graded or back-filled with non-noxious, non-inflammable and non-combustible solids, to secure that the excavated area shall not collect and permit to remain therein stagnant water; or that the surface of such area which is not permanently submerged is graded or back-filled as necessary so as to reduce the peaks and depressions thereof so as to produce a gently running surface that will minimize erosion due to rainfall and which will be in substantial conformity to the adjoining land area.
(B) Vegetation shall be restored by appropriate seeds of grasses or planting of shrubs or trees in all parts of said mining area where such area is not to be submerged under water as herein above provided.
(C) The banks of all excavations not back-filled shall be sloped to the waterline at a slope which shall not be less than three feet horizontal to one foot vertical and said bank shall be seeded.
(Ord. passed 3-10-1993)