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20.0 REVEGETATION <br /> 20.1 DESCRIPTION <br /> This specification covers preparing the areas for seeding, furnishing seed, (if <br /> required), furnishing fertilizers, mulch and/or mulch stabilizers on all areas disturbed <br /> by the CONTRACTOR during project work or areas designated in the Special <br /> Conditions to be revegetated. The CONTRACTOR is responsible for revegetating all <br /> areas disturbed during installation of closure elements, or during backfilling of a mine <br /> opening or other reclamation work. Revegetation must be factored into the bid for <br /> closure of each opening/area, unless a specific bid item for revegetation is included <br /> in the bid. <br /> 20.2 MATERIALS <br /> Seed <br /> Seed provided by the OWNER. The CONTRACTOR must give the PROJECT <br /> MANAGER at least five (5) working days notice of the acreage to be seeded, so the <br /> PROJECT MANAGER can deliver the proper amount of seed. <br /> Fertilizers <br /> Commercial Fertilizer. Fertilizers shall be commercial grade diammonium phosphate <br /> (18-46-0) and free flowing, suitable for application with hydraulic- or pneumatic-type <br /> equipment or fertilizer spreaders and conforming to applicable Colorado State <br /> Fertilizer laws. Caked or lumpy fertilizer will not be accepted. The CONTRACTOR <br /> shall furnish a supplier's certificate of analysis and weight. All fertilizer shall be in a <br /> form readily available to plants. Commercial fertilizer shall be applied at the rate of <br /> 300 pounds per acre. <br /> Mulches <br /> Mulch shall consist of hay or straw mulch, pest-free or weed-free to the extent <br /> possible. Approximately 30 percent by weight of the mulch material shall be ten <br /> inches (10") in length or longer. Rotted, caked, decayed or moldy material will not be <br /> accepted. Hay or straw mulch shall be applied uniformly at the rate of two (2) tons <br /> per acre. Hydromulch shall be applied at the rate of one and a half (1 1/2) tons per <br /> acre. <br /> 20.3 EXECUTION <br /> The CONTRACTOR shall give the PROJECT MANAGER at least two (2) days notice of <br /> the time and place of starting his revegetation operations and shall continue to advise <br /> 19 <br />