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RULE 2 PERMITS <br /> temperatures and delayed soil thawing. By eliminating the use of mulch, the soil temperature is <br /> increased earlier in the spring, thus enabling the seeds to germinate earlier when soil moisture <br /> conditions are optimum, immediately following snowmelt. Earlier growth also results in further <br /> root development by the plants, aiding survival through the dry and hot summer months. <br /> Without the use of a mulch, erosion control has been maintained with surface manipulation <br /> methods such as contour furrows, drainage benches and permanent drainage channels. The initial <br /> reclamation at Colowyo that began in 1978 is indisputable evidence that the methods used at <br /> Colowyo have proven highly successful in controlling erosion on slopes as steep as 3h:ly until <br /> vegetative cover has established. Where deemed necessary by Colowyo (e.g., sagebrush steppe <br /> targeted areas, south-facing slopes, high wind areas, etc.),mulching techniques (or other practices <br /> such as chisel plowing, or discing on the contour)will be reinstated as necessary. <br /> Irri ag tion <br /> No irrigation is planned for areas to be seeded. <br /> Pest and Disease Control <br /> Noxious plants, as defined in Section 1.04, will be managed in accordance with the following <br /> section—"Weed Management Plan".If insects become a problem to the point where they endanger <br /> the successful establishment of the seeded vegetation on the reclaimed area, they will also be <br /> controlled using methods suggested by the Colorado State University Extension Service. All <br /> herbicides and pesticides utilized will be those that are approved by the appropriate state and <br /> federal governmental agencies responsible for the approval and distribution of such agents. <br /> Weed Management Plan <br /> A listing of Colorado's noxious weeds (A, B, and C lists) as well as an indication of Rio Blanco <br /> and Moffat Counties' listed taxa are indicated on Table 2.05-10 along with an indication of those <br /> taxa that have been observed on or near the Colowyo mine. As indicated on this table, there are <br /> no "A" list taxa known from the area. "A"list taxa must be eradicated. To the contrary, there are <br /> seven (7) `B" list(must be managed) taxa known from the environs of the Colowyo Mine as well <br /> as three (3) "C" list (management may be required by local governments) species. Of these 10 <br /> species, common mullein and poison hemlock from the "C" list, and Russian olive from the `B" <br /> list are not overly problematic and will normally not require attention. In fact the Russian olive <br /> was purposefully planted in the reclamation. If "infestations" of common mullein or poison <br /> hemlock evolve, they will be treated in the same manner as the more problematic species. <br /> The remaining seven species: hoary cress,musk thistle,Canada thistle,bull thistle,houndstongue, <br /> black henbane, and downy brome (cheatgrass) will be the primary focus of the program and will <br /> likely receive attention as appropriate at the Colowyo mine. In addition, continued monitoring <br /> of reclamation will focus on identification of any new noxious weeds. <br /> For the most part, noxious weeds observed on or near Colowyo reclamation do not achieve <br /> "infestation"levels. By infestation,Colowyo means: 1)relative cover contribution of one noxious <br /> Rule 2 Permits 2.05-22 Revision Date: 10/27/20 <br /> Revision No.: TR-143 <br />