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RECEIVED <br /> �NE W MO N T utU 18 Z018 Newmont Mining Corporation <br /> Cripple Creek&Victor Mine <br /> OiMON OF RECLAMATION P.O.Box St <br /> 191 <br /> MINING AND SAFETY victor, co sosso <br /> www.newmont.com <br /> LLA <br /> SENT CERTIFIED RETURN RECEIPT REQUESTED <br /> 7018 0680 0000 4627 6252 <br /> December 13, 2018 <br /> Mr. Timothy Cazier, P.E. <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 Mining Company; Cresson Project; <br /> Written Notification—Process Water Spill,December 11,2018 <br /> Dear Mr. Cazier: <br /> In accordance with Rule 8, Section 8.2.3 of the Mineral Rules And Regulations of the Colorado Mined <br /> Land Reclamation Board For Hard Rock, Metal, And Designated Mining Operations (Rules), Newmont <br /> Mining Corporation - Cripple Creek and Victor Gold Mining Company (CC&V) hereby provides the <br /> Division of Reclamation, Mining and Safety (Division) with a formal report regarding the process water <br /> spill that occurred at the High Grade Mill (HGM) on December 11,2018. <br /> The following points address the requirements of Rule 8, section 8.2.3: <br /> a. Actions taken to respond to and correct the emergency situation or condition <br /> • At approximately 6:00 pm on December 11, 2018, a process water conveyance pipeline <br /> separated. The separation occurred on the East side of the HGM near the Process Ore <br /> Thickener Tank(PO Tank). Approximately 400 gallons of process water overtopped primary <br /> containment, but remained on the HGM pad. The process water consists of fresh water and <br /> sediment originating from the milling and filtering processes that occur in the HGM. No <br /> cyanide is utilized anywhere in the mill circuit, therefore there is no risk that this process <br /> water contains cyanide. <br /> • Upon discovery, the leaking conveyance pipeline was isolated and the separated pipe was <br /> repaired. <br /> • A skid steer was used to over-excavate the spill-impacted soil. <br /> • The excavated soil was transferred to the ore feed pile to be re-processed in the HGM. <br /> Approximately 3 cubic yards of soil was excavated in the cleanup efforts. Clean gravel was <br /> placed in the over-excavated area. <br />