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 city, in an amount of not less than $1,000 and not more than $10,000, as a guarantee that such applicant, in restoring, reclaiming and rehabilitating such land, shall within a reasonable time and to the satisfaction of the Board meet the following minimum requirements:
(A) Surface rehabilitation. 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 backfilled with non-noxious, noninflammable and noncombustible 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 backfilled as necessary so as to reduce the peaks and depressions thereof and 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. 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 hereinabove provided.
(C) Banks of excavations not backfilled. The banks of all excavations not backfilled shall be sloped to the water line at a slope which shall not be less than three feet horizontal to one foot vertical and said bank shall be seeded.
(D) Additional requirements. In addition to the foregoing the Board may impose such other conditions, requirements or limitations concerning the nature, extent of the use and operation of such mines, quarries or gravel pits as the Board may deem necessary for the protection of adjacent properties and the public interest. The said conditions and the amount of the performance bond shall be determined by the Board prior to issuance of the permit.
(Ord., passed - -79) Penalty, see § 152.999