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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 <br /> a specific bid item for revegetation is included in the bid. <br /> 20.2 MATERIALS <br /> Seed <br /> All seed shall conform to the current rules and regulations of the State of Colorado and the <br /> U.S. Department of Agriculture. Unless exception is granted by the PROJECT <br /> MANAGER, seed shall be thoroughly pre-mixed (except for legumes) in the required <br /> proportions and delivered to the work site in bags or containers clearly tagged showing the <br /> name and address of the supplier, the net weight of each species of seed in the mix, the <br /> percent of weed seed content, and the guaranteed percentage of purity and germination for <br /> 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 <br /> within 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 Outdated 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 /> inoculants will not be accepted. Inoculating shall be done within 48 hours before seeding. <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 Fertilizer <br /> laws. Caked or lumpy fertilizer will not be accepted. The CONTRACTOR shall furnish a <br /> supplier's certificate of analysis and weight. All fertilizer shall be in a form readily available <br /> to plants. Commercial fertilizer shall be 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 <br /> minimum of one (1) year. Manure shall not be so caked or lumpy that it cannot be spread <br /> uniformly. The CONTRACTOR shall furnish weight tickets from a certified scale. Manure <br /> shall be applied at the 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 <br /> 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 <br /> shall be applied at the rate of one and a half (1 1/2) tons per acre. <br /> 16 <br />