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Cripple Creek & Victor Gold Mining <br />A Joint Venture ANGLOGOLD ASHANTI (COLORADO) CORP., Manager <br />Operations Office <br />P.O. Box 191 100 North 3rd Street <br />Victor, Colorado 80860 <br />(719) 689 -2977 — Fax (719) 689 -3254 <br />SENT CERTIFIED, RETURN RECEIPT REQUESTED <br />7014 - 0150- 0000 - 6082 -6189 <br />November 12, 2014 REC <br />EIVED <br />Mr. Timothy Cazier, P.E. <br />Environmental Protection Specialist ')1011 14 <br />Colorado Department of Natural Resources 2014 <br />Division of Reclamation, Mining and Safety 4VISIONG F REC� a <br />Office of Mined Land Reclamation AND SAFEry►o <br />1313 Sherman Street, Room 215 <br />Denver, Colorado 80203 <br />Re: Permit No. M-1980-!140'4; Cripple Creek & Victor Gold Mining Company( "CC &V "); <br />Cresson Project; - Information on upgrading Storm Water BMP for Squaw Valley Toe <br />Berm Pl.- <br />Dear Mr. Cazier: <br />Due to the impact of flows off of the State Highway 67 right of way on to mine property, CC &V <br />proposes to use best management practices (BMP) to do maintenance and upgrade storm water <br />settling features on the Squaw Valley Leach Facility Toe Berm. This is necessary to protect the <br />integrity of the underdrain pump back ponds at the base of the berm. <br />The task will include riprapping segments of the existing ditches on the lower toe berm, which <br />are shown in blue on the enclosed figure and placing a settling basin illustrated in purple that will <br />be field fit below the cement pump back ponds and up gradient of the established ground water <br />monitoring wells. The basin shown on the accompanying figure is an approximation of the field <br />fit structure. A dike of less than 10 feet in height will form the lower face. The proposed <br />spillway will take the water into an established ditch that flows into the former construction <br />dewatering BMP located down gradient of the former tree storage area. This channelization will <br />eliminate sheet flow that has occurred during large rainfall events. <br />Maps of the finalized BMPs will be included in the revised version of the Storm Water Plan for <br />MLE -2 that will be completed early in the new year. <br />