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Newmont Mining Corporation <br /> NE W M O N T Cripple Creek&Victor Gold Mine <br /> 100 North 3f0 Street P O Box 191 <br /> T 719-689-4029 <br /> F 719-689-3254 <br /> www.newmont.com <br /> I?t <br /> September 20,2018 0 <br /> SENT CERTIFIED,RETURN RECEIPT REQUESTED � <br /> 7017 2400 0000 4077 9583 /S/py <br /> Mr. Timothy Cazier,P.E. M/�/�GAN <br /> Environmental Protection Specialist <br /> Colorado Department of Natural Resources <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 Mininiz Company("CC&V"); Cresson Project; <br /> Written notification—Concentrate Thickener Underflow Pipe Line Spill,September 15,2018 <br /> Dear Mr. Cazier: <br /> In accordance with Rule 8, Section 8.2.3 of the Mineral Rules And Regulations of the Colorado Mined Land <br /> Reclamation Board For Hard Rock, Metal, And Designated Mining Operations (Rules), Newmont Mining <br /> Corporation - Cripple Creek and Victor Gold Mining Company (CC&V) hereby provides the Division of <br /> Reclamation, Mining and Safety (Division) with a formal report regarding the September 15, 2018, Concentrate <br /> Thickener Underflow Pipe Line Spill that occurred at the High Grade Mill(HGM). <br /> The following points address the requirements of Rule 8, section 8.2.3: <br /> a. Actions taken to respond to and correct the taken to respond to and correct the emer2encysituation or condition <br /> condition <br /> • At approximately 4:00 pm on September 15, 2018, the concentrate thickener underflow pipe line <br /> separated at a victaulic fitting, spilling approximately 1,500 gallons of slurry. <br /> • Upon discovery,the pump was shut down and the flow was redirected. <br /> • A skid steer was used to over excavate the area impacted by the spill. <br /> • The excavated soil was transferred to the tailings loadout pile. Less than 30 cubic yards of soil was <br /> excavated in the cleanup efforts. Clean gravel was placed in the over excavated area. <br /> b. Any known or adverse impacts to humanknown or adverse impacts to human health, or the environment <br /> the environment <br /> No impacts to human health or the environment were observed or are expected to occur due to the low <br /> quantity spilled,the benign chemical composition of the concentrate, and the swift clean up. <br /> c. CC&V Contact <br /> 1 <br />