2007-05-01_REVISION - M1996008 - Laserfiche WebLink

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Adequacy Response Page 2 of 2 Rule 6.4.5 Exhibit E -Reclamation Plan North R-34 Pit Permit No. M-1996-0OS 3. The reclamation plan calls for maintaining the cottonwoods that currently exist on site for use as wildlife habitat. The Division is wncerned that dewatering of the pit may drop the water table enough to impact the cottonwoods despite the presence of the augmentation pond. Therefore, the Division would like the operator to propose a method to monitor the ground water level in the vicinity of the cottonwoods and mitigation measures that would be implemented should the ground water level drop a meter or more. Rather than propose a monitoring plan, the operator would like to propose a modification to the mining plan that we believe will minimize impacts to the ground water table and in turn, impacts to the existing cottonwoods. Mining will occur for a period of eight to twelve weeks per year between the months of November and Mazch. During this time, water from the pit will be pumped into the Sunrise ditch, the augmentation pond, and the sediment pond, thereby providing recharge water for the cottonwoods. After mining is finished for the designated amount of time, pumping will cease and the pit will be allowed to fill with water thus maintaining the natural ground water level. This change is reflected in the enclosed pages 6 and 7 of mining plan. 4. In accordance with Rule 3.1.5(7), the operator commits to reclaiming all slopes between five feet above and ten feel below the expected water line to a grade no steeper than 3H:1 V. Should you have any other questions or concerns, please feel free to call me. I can be reached at (720) 842-5321. Sincerely, Richazd M. Wenzel III, P.E. Greg Lewicki and Associates Encl: Pages 6 and 7 of the Mining Plan cc: Judy DeVincentis, Western Gravel, Inc. Montrose County Clerk and Recorder File