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14 P/Q 12 ?u? rcf ur - f'fou a ?Q,?we?.! <br />RECEIVED <br />CN-01 <br />1M&Y 1tI Zek&. o <br />s <br />M-lets!-1.9 <br />mme- G,?&r lo-x <br />APR 25 20ii <br />Div4 ion of ileciamatio aw" <br />R#ining and Safety <br />Colorado ?CE?/VED <br />MEMORANDUM APR 0 8 2011 <br />DDiv'urango ,. <br />To: Katherine Harrison-Rogers, Project Planner Min ng anRa Sa©at o? <br />From: Victoria Schmitt, PE Safety <br />Date: March 24, 2011 <br />Subject: Wildcat May Day Idaho Mine Submittal Review - Engineering Comments <br />The following comments reflect review of application materials submitted by the applicant on February 15, <br />2011 and received by Planning Engineering on February 22, 2011. <br />1. Project Understanding <br />The Applicant plans to extract ore from May Day Mine Levels 1 and 2 and process the ore at May Day <br />Level 1. The milling process uses chemicals and water to leach the metal from the ore. The applicant <br />proposed that a majority of process water would be recycled. Tailings waste is proposed to be solidified and <br />buried back in the mined areas from which they were extracted, assuming these areas can be demonstrated <br />to be dry. <br />Access is proposed via a private road on an adjacent landowner's parcel (i.e.: the unpermitted access road), <br />to the La Plata River bridge crossing, and then up a historic mine access road. It is understood the <br />unpermitted road has grades of 12-15% and the historic mine access road has grades of greater than 15%. <br />The project is proposed to be supported by 20-25 employees who will access the site via the aforementioned <br />roads. <br />Traffic to the mine has not been addressed but can be anticipated to potentially include 20-25 employees, <br />periodic service vehicles (e.g. portable toilet pumping, chemical delivery, etc), and periodic construction <br />vehicles (e.g. concrete). <br />The "Operational Area" site plan figure shows secondary access as being proposed. This access crosses <br />United States Forest Service (USFS) land. <br />Fort Lewis Mesa Fire District (FLMFD) provides emergency service in the project area. Significant road <br />improvements would be needed for FLMFD to access the site. <br />Sanitary service is proposed as porta-potties. Potable water for employees has not been proposed. <br />PLANNING DEPARTMENT • 970.382.6263. • 1060 E. 2ND AvE. • DURANGO, COLORADO • 81301