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A,C RECEIVED <br /> /=G - " MO- " T Newmont Mining Corporation <br /> Cripple Creek& Gold <br /> DEC 19 2017 100 North 3"Str ettoP O Box+181 <br /> vvww.n ewrn ont.com <br /> DIVISION OF RECLAMATION <br /> MINING AND SAFETY <br /> SENT CERTIFIED,RETURN RECEIPT REQUESTED <br /> 7015 3010 0000 7164 2351 <br /> December 14,2017 <br /> Mr.Timothy Cazier,P.E. Pdy <br /> Environmental Protection Specialist <br /> Colorado Department of Natural Resources �Q <br /> Division of Reclamation,Mining and Safety ,/ Z'tJ <br /> Office of Mined Land Reclamation <br /> f <br /> 1313 Sherman Street,Room 215 <br /> Denver, Colorado 80203 <br /> Re: Permit No.M-1980-244: Cripple Creek& Victor Gold Mining Company("CC&V"); Cresson Project <br /> —Written Release Notification—Refinery Sump Release—December 7.2017 <br /> Dear Mr.Cazier: <br /> i <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), the Cripple Creek and <br /> Victor Gold Mining Company (CC&V) hereby provides the Division of Reclamation, Mining and Safety <br /> (Division)with a formal report regarding the release of water from the Arequa Gulch Absorption,Desorption,and <br /> Recovery(AGADR)refinery,which occurred on the morning of December 7,2017. <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 7:20 am, a release of water was observed at the refinery located at AGADR. An <br /> estimated 350 gallons of water exited the refinery and flowed approximately 100 feet to the south, off of <br /> containment. The fresh water feed to the wet scrubber was turned on; however the sump pumps were not <br /> running. Consequently, water draining from the scrubber overtopped the sumps and drained out of the <br /> refinery door. <br /> • At approximately 7:25 personnel noticed the release and immediately turned the sump pumps on, <br /> stopping the release. <br /> • The majority of the water released from the refinery collected in two parking ditches located in front of <br /> AGADR(see photo 1). <br /> • A submersible pump was used to pump the pooled water from the parking ditches back into AGADR(see <br /> photo 2). After ponded water was pumped back into AGADR, a backhoe was used to collect the impacted <br /> soil (see photo 3 and 4). The soil was removed using an `over-excavation' approach. Depth of recovery <br /> was approximately six to twelve inches. <br /> 1 <br />