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z INCORPORATED GEORGE M.L. ROBINSON,P.G. <br />J. ERICH RALIBERP.E. <br />RENVIRONMENTAL .AND ENGINEERING SERVICES <br />STRATEGICALLY POSITIONED- TECHNICALLY PREPARED ANDREW HARLEY,PH.D <br />GINNY KING <br />• <br />MAY DAY IDAHO MINE COMPLEX <br />WILDCAT MINING CORPORATION <br />ORIGINAL 112(D) PERMIT <br />EXHIBIT D <br />Mining Plan <br />Rule 6.4.4 <br />6.4.4(a) Description of the method(s) of mining to be employed in each stage of the <br />operation as related to any surface disturbance on affected lands <br />Mining activities are planned to be conducted in the following phases: <br />1. Phase 1 Preliminary Construction and Reclamation Activities <br />A. Access Road Construction: <br />• <br />The Access Road from County Road 124 to the bridge will be constructed and stabilized <br />in accordance with the workplan presented in Exhibit 6.5 - Geotechnical Stability. <br />B. Grading of Existing Access Roads, Expansion of May Day No. 2 Bench and <br />Installation of Stormwater Best Management Practice Structures <br />All existing access roads will be regraded prior to other construction activities. <br />Additionally, the May Day No. 2 bench will be expanded to the west of the access road <br />for overburden and store mined rock. <br />A Stormwater Management Plan has been submitted to the CDPHE and is included in the <br />Environmental Protection Plan (Exhibit T, Section 6.4.20.10). In accordance with this <br />Plan, Best Management Practices (BMP) structures will be installed along the existing <br />and future planned roads and the benches. <br />C. Repair of May Day No. I Portal <br />The collapsed portal will be repaired as per the workplan presented in the Geotechnical <br />Stability Exhibit (6.5), subject to approval by MSHA. Overburden material will be stored <br />at May Day No. 2 bench. <br />May Day Idaho Mine Complex 112(d) Permit Application <br />September 21, 2010 <br />"Strategically Positioned — Technically Prepared" <br />5555 DTC Parkway Suite A -4000, Greenwood Village, Colorado 80111 <br />Phone: (303)832 -7664, Fax: (303)832 -7469 <br />