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~ • iii iiiiiiiiiiiiiiii <br />APPLIED ENVIFtONM6NTAL SERVICES <br />1436 Tipperary <br />Boulder, Colorado 80303 <br />24 June 1986 <br />Mr. Carl B. Mount <br />Reclamation Specialist <br />Department of Natural kesources <br />Mined Land Reclamation Division <br />1313 Sherman Street, Suite 423 <br />Denver. Colorado 8C~2U3 <br />Re: File No: M-86-076. Response to Adequacy Letter of June 2U, <br />1986. <br />Dear Mr. Mount: <br />A-1. (313) 258-6893 Northern Minerals, Inc. corporate <br />headquarters telephone number in Michigan. (303) 259-4525 <br />Northern Minerals Local answering service telephone number in <br />Durango, Co. <br />6-la. Mining will progress simultaneously with the opening of <br />the Incas No.3 and Upper Combination Adits and reworking the <br />waste rock dumps. It is e::pected that all dump roc4; will be <br />removed from the site during the first two mining seasons. <br />Evaluation of the ore body underground will be completed <br />during this same time period. It is possible that some mining <br />underground could begin as early as this first season. Any <br />ore removed from the underground workings will be stockpiled <br />on existing waste rock dumps or on sites where the waste rock <br />has been hauled away. The sequence of dump removal will begin <br />with the Incas No. 3. The dump will be entered from the e:<ist <br />adit access road and waste rock will be picked up with a front <br />loader. Approximately 8U percent of the dump can be retrieved <br />with the front loader. Materials downslope will be drawn up <br />with a bacF:hoe to the e;:cavated area. <br />The use of the front loader and/or back:hoe will cause some <br />disturbance beyond the toe of the dump. This disturbance will <br />be F:ept to a minimum and will consist of compaction of soil by <br />the vehicles, removal of the upper few inches of soil, and <br />crushing of the vegetation. Reclamation of this newly <br />disturbed area will include revegetation and ripping to <br />breakup compaction and control drainage erosion. <br />All distubed areas are included within the Permit Boundaries. <br />B-lb. If necessary, drainage on the road will 6e controlled <br />by the use of culverts, natural drainage patterns and cross <br />