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Mining Corporation <br /> TR113 t k&Victor M,RECE� <br /> 3, VED <br /> TC1/mac 80860 APR 1 <br /> ont.com 2019 <br /> SENT CERTIFIED RETURN RECEIPT REQUESTED A�l~ t*N 13F CL gMgnON <br /> 7018 0680 0000 4627 5743 SqFE7-Y <br /> April 8,2019 <br /> 30 3 <br /> Mr.Timothy Cazier,P.E. s <br /> Environmental Protection Specialist a 00 <br /> Colorado Department of Natural Resources ° '- o <br /> Division of Reclamation,Mining and Safety <br /> Office of Mined Land Reclamation <br /> 1313 Sherman Street,Room 215 <br /> Denver, Colorado 80203 <br /> Re: Permit No. M-1980-244; Cripple Creek & Victor Gold Mining Company; Cresson Project; <br /> TR#113—Leach Cell Study <br /> Dear Mr. Cazier: < —� <br /> Newmont Mining Corporation's Cripple Creek and Victor Gold Mining Company (CC&V) hereby N N W <br /> provides the Division of Reclamation, Mining and Safety (DRMS) Technical Revision (TR) No. 113 <br /> proposing the construction and use of a leach cell located on the Arequa Gulch Valley Leach Facility <br /> (AGVLF). <br /> Background: <br /> Pending DRMS approval, a portion of Phase 3 AGVLF will be utilized for a leach cell(cell)to pilot gold <br /> recovery studies for increased recovery. Figure 1 details the proposed location,with liner elevations <br /> ranging from 10,130 feet to 10,163 feet at a 10%grade. Figure 2 details the cell topography and size(210 <br /> feet by 348 feet). <br /> Liner: The cell liner has not been welded as the proposed facility location is entirely on an <br /> existing valley leach facility(VLF). The cell liner has been installed in an overlapping fashion at <br /> the proposed location, with a 10%grade to direct solution drainage to the north.Figure 3 details <br /> the cell's northerly grade direction topographically.Figure 4 is a photograph of the cell location, <br /> which also details the grade direction. Approximately 18,000 tons of previously processed <br /> (leached),crushed ore(similar to drain cover fill(DCF))was placed and distributed over the cell <br /> liner,at an approximate depth of 3 feet.The size of the crushed material is measured at P80 3/ of <br /> an inch. <br /> Stacking: Approximately 18,000 tons of ore will be placed on top of the crushed ore described <br /> above. As of February 2019, approximately 45 million tons of the total permitted capacity <br /> remains available on the AGVLF; which is above the combined 36,000 tons of test pad materials. <br /> The cell will be stacked at maximum height of approximately 35 feet from the cell liner,which <br />