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However, the waterline will not be bermed since the area is <br />undisturbed, and NCIG commits to maintaining the undisturbed <br />condition of this pipeline corridor with respect to this specific <br />waterline. A third topsoil stockpile exists east of Pond A, which <br />is presently sufficiently bermed to retain any runoff. However, if <br />deemed feasible and appropriate, NCIG will modify or add ditches to <br />convey runoff from this feature to Pond A, since it is located <br />slightly upgradient from the pond. <br />Operation of the water system will have no impact on the Colorado <br />Hydrologic system (or alluvial valley floor) since it represents an <br />extremely small diversion relative to the daily flow of the <br />Colorado River. For example, the mean daily flow rate of the <br />Colorado is approximately 3500 CFS near New Castle and the <br />effective average daily flow rate of the diversion (based on 55 gpm <br />for 10 hours) is .05 CFS. Also, since there will be no surface <br />facilities at the point of diversion, no impacts to the shoreline <br />area are likely. <br />4.6.3.1.2 Reclamation <br />Reclamation will commence after cessation of operations. All of <br />the surface processing facilities will be removed and permanent <br />vegetation established. Channel A and sediment Pond A will remain <br />in place until the vegetation is established. After which time, <br />Channel A and Pond A will be removed and reclaimed. <br />4.6.3.1.3 Flow Regimes <br />The Coal Ridge #1 Mine will disturb .073 square miles of land. All <br />of this disturbance is in the Colorado River drainage basin. <br />Runoff from this area would contribute very little flow to the <br />Colorado River. The Colorado River has a drainage area of 6013 <br />square miles at Glenwood Springs, and removing .073 square miles <br />would be insignificant. <br />NCIG - Coal Ridge #1 4-80 ABC/1145/910830 <br />i <br />~~ <br />