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20.0 REVEGETATION <br /> 20.1 DESCRIPTION <br /> This specification covers preparing the areas for seeding, furnishing seed, (if required), <br /> furnishing fertilizers, mulch and/or mulch stabilizers on all areas disturbed by the <br /> CONTRACTOR during project work or areas designated in the Special Conditions to be <br /> revegetated. The CONTRACTOR is responsible for revegetating all areas disturbed during <br /> installation of closure elements, or during backfilling of a mine opening or other reclamation <br /> work. Revegetation must be factored into the bid for closure of each opening/area, unless a <br /> specific bid item for revegetation is included in the bid. <br /> 20.2 MATERIALS <br /> Seed <br /> The CONTRACTOR must give the PROJECT MANAGER at least five (5) working days notice of <br /> the acreage to be seeded, so the PROJECT MANAGER can deliver the proper amount of seed. <br /> Fertilizers <br /> Commercial Fertilizer. Fertilizers shall be commercial grade diammonium phosphate (18-46-0) <br /> and free flowing, suitable for application with hydraulic- or pneumatic-type equipment or fertilizer <br /> spreaders and conforming to applicable Colorado State Fertilizer laws. Caked or lumpy fertilizer <br /> will not be accepted. The CONTRACTOR shall furnish a supplier's certificate of analysis and <br /> weight. All fertilizer shall be in a form readily available to plants. Commercial fertilizer shall be <br /> applied at the rate of 300 pounds per acre. <br /> Mulches <br /> Mulch shall consist of hay or straw mulch, certified as weed free by an appropriate state or <br /> county Agent. Approximately 30 percent by weight of the mulch material shall be ten inches <br /> (10°) in length or longer. Rotted, caked, decayed or moldy material will not be accepted. Hay or <br /> straw mulch shall be applied uniformly at the rate of two (2) tons per acre. Hydromulch shall be <br /> applied at the rate of one and a half (1 1/2) tons per acre. <br /> 23 <br />