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NEWMONThevrmont I aiinj Cor;,o[aLon <br /> Cr pple F_.F V-cior f41ne <br /> 1CG N 5 <br /> ?O E_x 191 <br /> Victor. CO 8N60 <br /> .::ne:;mont(CT, ph" <br /> FEB 2 7 2019 <br /> SENT CERTIFIED RETURN RECEIPT REQUESTED * �RECAT/QW <br /> AND STY <br /> February 22, 2019 <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,February 18,2019 <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 February 18, 2019. <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 10:30 am on February 18, 2019, a process water conveyance pipeline <br /> broke. The separation occurred on the East side of the HGM near the Neutral Water Tank. <br /> Approximately 400 gallons of process water spilled on the HGM pad that is over liner. The <br /> process water consists of fresh water and sediment originating from the grinding, flotation, <br /> and filtering processes that occur in the HGM. No cyanide is utilized anywhere in the mill <br /> circuit,therefore there is no risk that this process water contains cyanide. <br /> • Upon discovery, the leaking conveyance pipeline was isolated and the broken 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 4 cubic yards of soil was excavated in the cleanup efforts. <br />