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149dervfb <br /> Z/CC-MC-X 232014 <br /> AYATIOp <br /> October zz,20i4 DIVISION OF RECLINNINGANDWW <br /> Mr.Michael Cunningham Via FEDEX <br /> Environmental Protection Specialist TRK 77i5 61941995 <br /> Division of Reclamation,Mining and Safety <br /> 1313 Sherman Street,Room 215 <br /> Denver,Colorado 80203 <br /> Re: CEMEX Lyons Mine Permit M-1977-208 <br /> Technical Revision No.12, Revised Groundwater Monitoring Plan <br /> Third Quarter 2014 Monitoring Data <br /> Dear Mr.Cunningham: <br /> This letter transmits surface water and groundwater data associated with the sampling of cement kiln dust disposal <br /> area(C-Pit). The report covers the C-Pit ponded water and related monitoring well water for the third quarter of 20i4, <br /> covering the reporting period July 1,2014 to September 30,2014.Table i presents data for the last four quarters. <br /> For the third quarter compliance monitoring,water samples were collected on August 25,2014 from CEM-ool and CEM <br /> 004 groundwater wells,and from the C-Pit ponded water. Inspections of CEM 005 on the same day indicated that the <br /> well did not produce any water. <br /> The samples collected from C-Pit ponded water and groundwater wells were analyzed for pH,chloride,sulfate,total <br /> dissolved solids,selenium,and thallium.The reported pH data is based on the pH analysis performed at the time of <br /> collection(Table 1). <br /> The pertinent laboratory report indicated that the analytes from CEM-ooi,CEM-o04,and C-Pit were within the target <br /> levels prescribed by TR-iz. <br /> Please contact me at 303-823-2i15 or by email at michaell-whitehead.@cemex.com for questions and concerns about <br /> this submittal. <br /> in�ely, <br /> i hael L.Wh ehead <br /> Environmental Manager <br /> Encls.\Yi443 C-Pit Monitoring Report and Summary of Analytical Results(Table 1) <br />