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In summary, soil salvage and reconstruction is critical for successful reclamation of <br />drastically disturbed lands. Topsoil with its structure, organic matter, microbiology, <br />living seeds and roots, and nutrient contents is a valuable resource that is difficult to <br />duplicate using subsoil and amendments. Properly salvaged, handled and <br />reconstructed topsoil and subsoil growth mediums play a crucial role in accelerating the <br />establishment and growth of plants and vegetation communities on reclaimed lands. <br />WEED MANAGEMENT <br />The Colorado Division of Minerals and Geology, Mined Land Reclamation Board <br />( "DMG ") prepared a Guideline (dated July 17, 1998) for the management of noxious <br />and pest weeds on hard rock and construction materials mining operations. The DMG <br />may require the operator to develop a Weed Control Plan if an infestation of noxious or <br />pest weeds are present or if the local weed control agency recommends a plan during <br />the public comment period. An integrated pest management plan ( "IPM ") approach for <br />control of noxious and pest weeds has been very successful on mined lands in <br />Colorado. An IPM considers the following: <br />• Cultural Control- Prevention of unnecessary disturbance. Planting <br />acceptable native plant species for site colonization; <br />• Mechanical Control- Mowing, pulling, disking and plowing; <br />• Biological Control- Introduction of insects or other biologic agents which <br />are known to inhibit or prevent reproduction of noxious weed species. <br />Biological controls will be coordinated with the Colorado Department of <br />Agriculture's Insectory in Grand Juction or other knowledgeable agencies; <br />and <br />• Chemical Control- Application of appropriate herbicides by a licensed <br />applicator. All herbicides will be applied in accordance with <br />Appendix G 6 07/01/02 <br />