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Response to Preliminary and Secondary Issues April 28, 2011 <br />La Plata County that is included in the Idaho Mine permit application A description of <br />how these slopes will be land back must be included in the Work Plan <br />Response #2- June 4 and June 7, 2010 Allen Sorenson's Memos <br />Please refer to response #24 for response <br />Question #3 June 4 and June 7,2010- June 4 and June 7,2010-Allen Sorenson's <br />Memos <br />All other recommendations for fall sloping retaining walls and monitorinz contained in <br />the Geotechnical Reconnaissance Report are acce table to the DRMS, and must be <br />incorporated into the detailed Work Plan The Work Plan must include design details and <br />Weci ications or all elements ofroad construction and repair and must speciAa <br />monitoring frequency for road performance monitoring systems to be installed and <br />Wecifv maximum allowable movement tolerances <br />Response #3 - June 4 and June 7, 2010 Allen Sorenson's Memos <br />The recommendations outlined in the Geotechnical Reconnaissance Report are <br />included in the construction work plan <br />Question #4 June 4 and June 7, 2010 Allen Sorenson's Memos <br />Exhibit C to the permit application contains lists ofstorm water controls that might be <br />installed at the road; the Work Plan must include details and illustrations of each storm <br />water control to be installed and where. The Work Plan must also include a contour ma <br />outlining the drainage basin contributing runo ff to the road so that DRMS can ful1V <br />evaluate the ditch and culvert performance calculations included in the Permit <br />application. <br />Response #4 June 4 and June 7, 2010 Allen Sorenson Is Memos <br />The road design prepared by CLC locates erosion and sedimentation BMPs as <br />requested. The drainage basin delineation and hydraulic analysis is presented in the <br />Question 425- March 7, 2011 Peter Hays, Tim Cazier <br />Please provide the Division with a copy of Mr Martin's report dated May 26 2010 referenced <br />in the paragraph labeled "Background" and just before the "Conclusions" section <br />Response #25 March 7, 2011 Peter Hays, Tim Cazier <br />The referenced May 26, 2010 report is included as Attachment B <br />Response-Second and Third Geotechnical Issues 9 5/27/2011