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20.0 REVEGETATION <br /> 20.1 DESCRIPTION <br /> This specification covers preparing the areas for seeding, furnishing seed, (if required), furnishing <br /> fertilizers, mulch and/or mulch stabilizers on all areas disturbed by the CONTRACTOR during project <br /> work or areas designated in the Special Conditions to be revegetated. The CONTRACTOR is <br /> responsible for revegetating all areas disturbed during installation of closure elements, or during <br /> backfilling of a mine 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 in the bid. <br /> 20.2 MATERIALS <br /> Seed <br /> Seed provided by the OWNER. The CONTRACTOR must give the PROJECT MANAGER at least five (5) <br /> working days notice of the acreage to be seeded, so the PROJECT MANAGER can deliver the proper <br /> amount of seed. <br /> Fertilizers <br /> Commercial Fertilizer. Fertilizers shall be commercial grade diammonium phosphate (18-46-0) and free <br /> flowing, suitable for application with hydraulic-or pneumatic-type equipment or fertilizer spreaders and <br /> conforming to applicable Colorado State Fertilizer laws. Caked or lumpy fertilizer will not be accepted. <br /> The CONTRACTOR 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 300 pounds per <br /> acre. <br /> Mulches <br /> Mulch shall consist of hay or straw mulch, pest-free or weed-free to the extent possible. Approximately <br /> 30 percent by weight of the mulch material shall be ten inches (10") in length or longer. Rotted, caked, <br /> decayed or moldy material will not be'accepted. Hay or straw mulch shall be applied uniformly at the <br /> rate of two (2) tons 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 the time and place <br /> of starting his revegetation operations and shall continue to advise as to the schedule of operations. <br /> Revegetation may take place at the completion of work at an individual opening if the CONTRACTOR so <br /> desires. <br /> Fertilizers <br /> Immediately prior to seedbed preparation, fertilizer shall be uniformly applied over the areas <br /> designated for seeding and immediately incorporated into the soil by tilling methods as discussed <br /> below. Commercial fertilizer shall be applied at the rate of 300 pounds per acre. Manure shall be <br /> applied at the rate of 30 tons per acre, <br /> 27 <br />