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WZEN <br />Mr. Donald W. MacDonald <br />Coors Energy Corporation <br />Post Office Box 467 <br />Golden, Co 80402 -0467 <br />Dear Mr. MacDonald: <br />Hazen Research, Inc. <br />4601 Indiana Street <br />Golden, CO 80403 USA <br />Tel. (303) 279 -4501 <br />Fax (303) 278 -1528 <br />January 7, 2013 <br />Enclosed you will find our report of analysis for the two solid samples that were received <br />at Hazen on 12/14/2012. You will also find the report for the TCLP analysis which was <br />subcontracted to Accutest Laboratories. The sample identifications shown on the <br />Accutest report correspond to your sample identifications as follows: <br />Sample ID Hazen ID Accutest ID <br />BL #5 Bottom Ash - 12/13/2012 <br />BL #5 Fly Ash - 12/13/2012 <br />If you have any questions about this, or if I can be of any other help, please contact me. <br />encl. <br />L252/12 -1 D41896 -1 <br />L252/12 -2 D41896 -2 <br />AHR -2012 —79— <br />An Employee -Owned Company <br />Sincerely, <br />Robert Rostad <br />Manager <br />General Analytical <br />