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New Access Road Construction Work Plan <br />Exhibit D — Attachment 1 <br />The suggestions provided by DRMS, including the suggestion to perform a road and cut slope <br />geotechnical stability assessment, have been included in the following construction work plan. <br />The stability assessments and the road engineering and construction plan prepared by CLC <br />Associates and R Squared have been incorporated in this mine permit application. The New <br />Access Road is designed by CLC Associates, Greenwood Village, Colorado 80111 under the <br />direction of Mr. Daniel Madruga P.E., LEED, AP. In addition, a geotechnical reconnaissance <br />report as outlined in a May 29, 2010 memo (See Attachment 6.5.3) is incorporated in the road <br />construction work plan (See Attachment D -1). <br />Purpose <br />The New Access Road is to provide access to the permitted May Day Idaho Mine Complex <br />located northwest of Durango, Colorado and to comply with applicable DRMS rules, regulations, <br />Board orders and County criteria. The design components are summarized by survey stations as <br />outlined below: <br />Existing Conditions Sta. 16 +00 to 21 +00 (Attachment D -1 at Sheet C- 4.11). <br />Roadway slopes average less than 15 percent. The roadway widths are over 20 feet wide <br />between Sta. 16 +00 and 18 +00, between 15 and 20 feet wide between Sta. 18 +00 and 19 +00, <br />and less than 15 feet wide thereafter. Cut slopes vary from slightly flatter than 1:1 between <br />16 +00 and approximately 18 +80 to near vertical, i.e., between 0.4:1 and 0.14:1 or between 65 <br />and 82 degrees from the horizontal). Where colluvium is exposed between Sta. 16 +00 and <br />18 +00 the will be no steeper than 1.5 (H) to 1 (V). As noted in the Attachment 6.5 -3 the near <br />vertical cut slopes where competent rock is exposed are performing well and appear stable. The <br />exposed bedrock is strong, fracturing is slight, and the bedding is favorable in relation to the <br />existing access road cut slopes. Because of relatively steep slopes above the existing cut slopes, <br />laying these slopes back to 1:25 (H):1(V) will effectively increase the slope height, needlessly <br />impacting undisturbed areas, generate an excess amount of additional rock requiring disposal <br />while increasing the area requiring reclamation. <br />Between Stations 16 +00 and 19 +20, terrace deposits consisting of rounded cobbles 1 to 12 <br />inches in diameter in a silty sand matrix. From Sta. 19 +20 to 21 +00 the competent Morrison <br />Formation bedrock is overlain by colluviums and is exposed in the cutslopes. The colluvium <br />consists of angular to sub rounded cobbles from 2 to 6 inches in diameter in a silty sand matrix; <br />occasional boulders up to 18 inches are also present in both the terrace deposits and colluvium. <br />The Morrison formation consists of relatively thick beds red -brown mudstone intertongued with <br />greenish -grey thin beds of green gray mudstone. The red -brown mudstone is hard, strong, <br />slightly fractured with bedding varying from less than 6 inches to over 2 feet; the greenish gray <br />mudstone is friable, thin bedded with the vary from less than 2 inches to over 6 inches. The <br />strike of the bedding is varies from North 80 to 88 degrees west and dips between 28 and 35 <br />degrees. <br />Wildcat Mining Corporation <br />May Day Idaho Mine Complex — 112d Permit Application <br />Revised August, 2011 <br />Exhibit D — Attachment 1 <br />Page 4 of 15 <br />