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All List A species must be eradicated by law. These weeds include African rue, Bohemian <br /> knotweed, Camelthorn, Common crupina, Cypress spurge, Dyer's woad, Elongated mustard, <br /> Giant knotweed, Giant salvinia, Hydrilla, Japanese knotweed, meadow knapweed, Mediterranean <br /> sage, Medusahead, Myrtle spurge, Orange hawkweed, Purple loosestrife, Rush skeletonweed, <br /> Squarrose knapweed, Tansy ragwort, and Yellow starthistle. The current complete list of <br /> noxious weed species and local management plans is available from the Weld County Weed <br /> Division. <br /> Wildlife <br /> Current wildlife conditions and potential impacts are described in Exhibit H, Wildlife <br /> Information. <br /> Water—General Requirement <br /> No groundwater is expected to be encountered in the mining and therefore groundwater in the <br /> area should not be affected. <br /> Although the pit floor will have a gentle, possibly rolling, topography as described above, <br /> discharge from the pit to the Lone Tree Creek drainage will still occur. Since the retention of <br /> water in the pit is not allowed under Colorado water law without prior approval, pit floor <br /> configurations will keep water draining without reaching high velocities that can cause rapid <br /> erosion. <br /> The discharge from the pit will be intentionally directed into existing drainageways associated <br /> with Lone Tree Creek. Thus, the edge of the pit will likely have not only a horizontal blending <br /> to produce smooth slope transitions, but it will be vertically variable to match rises and falls in <br /> the topography just beyond the pit edge. <br /> Initially, silt fence or other sedimentation best management techniques shall be installed in all <br /> significant drainages within about 50 feet of the edge of the affected land. Until the vegetation <br /> develops on the pit floor there will be a fair amount of sediment discharge from the regraded and <br /> seeded pit floor. These best management practices will aid in reducing the amount of sediment <br /> that leaves the affected land. <br /> No irrigation will be used in establishing the vegetation, so no water rights are required for those <br /> purposes. No water storage will occur in the pit. <br /> To minimize the effect on the prevailing hydrologic balance, the operator shall: <br /> a. Comply with all applicable Colorado water laws. <br /> b. Comply with all applicable Federal and State water quality laws and regulations. <br /> c. Comply with all Federal and State requirements for dredge and fill. <br /> d. Perform all work to minimize erosion and sediment transport. <br /> Current water resource conditions and potential surface water and groundwater impacts are <br /> described in Exhibit G,Water Information. <br /> Carr Pit East <br /> DRMS 112 Permit Application Page 15 <br />