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S @~ ~ ~ <br />~~cmcx ~ <br />Ms. Erica Crosby <br />Environmental Protection Specialist <br />Division of Minerals and Geology <br />Colorado Department of Natural Resources <br />1313 Sherman Street, Room 215 <br />Denver, Colorado 80203 <br />~~ ~ $ zaa~ <br />Divisb^ ni tarefsmRtion, <br />tUS'y,~'t?1~ Bn~• cr7L9a~t~/ <br />!/RE: CEM-1 Monitoring Results (3rd Quarter 2006) <br />Dear Ms. Crosby, <br />i~, ~ <br />m M-i~~7-zoa~ <br />January 17, 2007 <br />Via Certified Mail <br />Return Receipt Requested <br />7004 2890 0003 2043 0055 <br />Enclosed with this letter, are the results of the monitoring well sample taken for the 3rd Quarter <br />of 2006. These samples were collected on 12112/2006. These results were received from <br />Paragon Analytics on December 29, 2006 and are summarized below <br />Analyte Date of Collection: 12/12/2006 <br /> CEM-001 <br />Dissolved Selenium <1.0 µ 1 <br />Dissolved Thallium <0.2 µ 1 <br />H 7.6 <br />TSS 43 m 1 <br />Sulfate 10 m 1 <br />Chloride 2300 mg/1 <br />Please feel free to contact me with any questions or concerns you may have regarding this <br />submittal. <br />Sincerely, <br />4'(Y't <br />ennifer Zabe] <br />Environmental Specialist <br />Office: (303) 823-2141 <br />Jenniferz.Zabe] @cemexusa.com <br />Lyons Plant <br />P0. Box 529, Lyons, CO 80540. USA, (303) 823-2100, Fax (303) 832-2199 <br />