_GENERAL DOCUMENTS - C1981048 (2)

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20.0 REVEGETATION 20.1 DESCRIPTION This specification covers preparing the areas for seeding, furnishing seed, (if required), furnishing fertilizers, mulch and/or mulch stabilizers on all areas disturbed by the CONTRACTOR during project work or areas designated in the Special Conditions to be revegetated. The CONTRACTOR is responsible for revegetating all areas disturbed during installation of closure elements, or during backfilling of a mine opening or other reclamation work. Revegetation must be factored into the bid for closure of each opening/area, unless a specific bid item for revegetation is included in the bid. 20.2 MATERIALS Seed Seed provided by the CONTRACTOR. All seed shall conform to the current rules and regulations of the State of Colorado and the U.S. Department of Agriculture. Unless exception is granted by the PROJECT MANAGER, seed shall be thoroughly pre-mixed (except for legumes) in the required proportions and delivered to the work site in bags or containers clearly tagged.showing the name and address of the supplier, the net weight of each species of seed in the mix, the percent of weed seed content, and the guaranteed percentage of purity and germination for each species furnished. The CONTRACTOR shall give the tags to the PROJECT MANAGER. The CONTRACTOR shall furnish a signed statement certifying that the seed furnished is from a lot that has been tested by a recognized laboratory for seed testing within nine months prior to the date of delivery to the job site. Legume seed shall be inoculated with the correct viable inoculant for the species. Outdated inoculant will not be accepted. Inoculating shall be done within 48 hours before seeding. . Seed provided by the OWNER. The CONTRACTOR must give the PROJECT MANAGER at least five (5)working days notice of the acreage to be seeded, so the PROJECT MANAGER can deliver the proper amount of seed. Fertilizers Commercial Fertilizer. Fertilizers shall be commercial grade diammonium phosphate (1846-0) and free flowing, suitable for application with hydraulic- or pneumatic-type equipment or fertilizer spreaders and conforming to applicable Colorado State Fertilizer laws. Caked or lumpy fertilizer will not be accepted. The CONTRACTOR shall furnish a supplier's certificate of analysis and weight. All fertilizer shall be in a form readily available to plants. Commercial fertilizer shall be applied at the rate of 300 pounds per acre. Manure. Fertilizer shall be dry cow, horse or sheep manure that has been stockpiled a minimum of one (1) year. Manure shall not be so caked or lumpy that it cannot be spread uniformly. The CONTRACTOR shall fumish weight tickets from a certified scale. Manure shall be applied at the rate of 30 tons per acre. Mulches Mulch shall consist of hay or straw mulch, pest-free or weed-free to the extent possible. Approximately 30 percent by weight of the mulch material shall be ten inches (10") in length or longer. Rotted, caked, decayed or moldy material will not be accepted. Hay or straw mulch shall be applied uniformly at the rate of two (2) tons per acre. Hydromulch shall be applied at the rate of one and a half(1 1/2) tons per acre. Colorado Division of Minerals & Geology GENERAL BID SPECIFICATIONS 1996 Page 1