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<br />Richard Dougherty <br /> <br />- 3- <br />July 13, 1981 <br />8. Please clarify whether any water impoundments are to be built for storage <br />of water from Walker ditch and/or clarify what the IJalker ditch water will be <br />used for. <br />For general information, will any haul roads be constructed with embankment fill <br />on a natural slope in excess of 20 e? It is unclear from Exhibit I exactly what <br />the position of the road along the !Jest side of the pit with respect to the natural <br />topography will be. It would be beneficial to provide a general statement about <br />characteristics of the road throughout the life of the mine (including the ~ • <br />back fill operation). <br />Our staff has reviewed the bonding calculations submitted and we are recommending <br />some revisions. These revisions will be explained in a separate letter. One <br />major omission is that no information has been submitted for the loadout. This <br />area must be bonded under this permit. <br />With respect to geology, there is a minor issue. The text mentions the existence <br />of a fault zone along Rayden Gulch road. What is the location of this fault zone <br />with respect to the mine? <br />Zt is possible that we will require more explanation with respect to the effect on <br />the hydrologic balance depending on the results of the geochemical analyses. Also, <br />other information may be necessary depending on the nature of the responses not <br />yet received by the Division. Should any deficiencies be identified, N-G will <br />be notified in as timely a manner as possible. The hydrology portion of your <br />application is being submitted to the State Engineer with the Division of Water <br />Resources for review and recommendations. <br />,We have attempted in this review to identify all of the deficiencies which must <br />be rectified before the Division can make a decision to issue a permit. Your <br />desire to provide a complete and adequate application is recognized and greatly <br />appreciated. <br />If you have any further questions, please contact Fred Banta or myself. <br />Sincerely, <br />~~ ~. <br /> <br />Brian E. Munson <br />Reclamation Specialist <br />BEM/mmt <br />cc: Cass Legal <br />