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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 /> Seed provided by the CONTRACTOR. All seed shall conform to the current rules and <br /> regulations of the State of Colorado and the U.S. Department of Agriculture. Unless exception is <br /> granted by the PROJECT MANAGER, seed shall be thoroughly pre-mixed (except for legumes) <br /> in the required proportions and delivered to the work site in bags or containers clearly tagged <br /> showing the name and address of the supplier, the net weight of each species of seed in the <br /> mix, the percent of weed seed content, and the guaranteed percentage of purity and germination <br /> for each species furnished. The CONTRACTOR shall give the tags to the PROJECT <br /> MANAGER. The CONTRACTOR shall furnish a signed statement certifying that the seed <br /> furnished is from a lot that has been tested by a recognized laboratory for seed testing within <br /> nine months prior to the date of delivery to the job site. <br /> Legume seed shall be inoculated with the correct viable inoculant for the species. Outdated <br /> inoculant will not be accepted. Inoculating shall be done within 48 hours before seeding. <br /> Seed provided by the OWNER. The CONTRACTOR must give the PROJECT MANAGER at <br /> least five (5) working days notice of the acreage to be seeded, so the PROJECT MANAGER can <br /> 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 /> Manure. Fertilizer shall be dry cow, horse or sheep manure that has been stockpiled a minimum <br /> of one (1) year. Manure shall not be so caked or lumpy that it cannot be spread uniformly. The <br /> CONTRACTOR shall furnish weight tickets from a certified scale. Manure shall be applied at the <br /> rate of 30 tons per acre. <br /> Mulches <br /> Mulch shall consist of hay or straw mulch, pest-free or weed-free to the extent possible. <br /> Approximately 30 percent by weight of the mulch material shall be ten inches (10") in length or <br /> longer. Rotted, caked, decayed or moldy material will not be accepted. Hay or straw mulch shall <br /> 22 <br />