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Section 816.23 (b) Continued. • (b) Stockpiled materials shall be selectively placed on a stable area within the permit area, not disturbed, and protected from wind and water erosion, unnecessary compaction, and contaminants which lessen the capa- bility of the materials to support vegetation when redistributed. (1) Protection measures shall be accomplished either by -- (i) An effective cover of nonnoxious, quick-growing annual and per- ennial plants, seeded or planted during the first normal period after removal for favorable planting conditions; or (ii) Other methods demonstrated to and approved by the regulatory authority to provide equal protection or (2) Unless approved by the regulatory authority, stockpiled topsoil and other materials shall not be moved until required for redistribution on • a regraded area. Examination of the two previously cited topsoil maps reveals that all current and all proposed stockpiles are located within stable portions of the proposed permit area where the stockpiles are or will be protected from the external effects of both wind and coater erosion. Siting has also been made to avoid disturbances other than those incidental to their deposition and removal. Large brightly colored signs are placed on each stockpile to prevent inadvertent disturbance, unnecessary compaction or contamination. In addition to the physical protection afforded through proper location, additional measures are implemented once the stockpiles are in place. These measures include the planting of rapidly growing mulch species discussed in Section 816.114. The perennial pasture mixture described in Section 780.18 will also be planted if the stockpiles are to remain in place for a period in excess of one year. The planting of the stockpiles will be accomplished by drill seeding those portions flat enough to drill. The remainder will be 816-16