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. WATER QUALITY SAMPLING PROTOCOL <br />Procedure <br />The ground water sampling procedure used at the Keenesburg Mine site <br />during 2010 was originally approved as part of the Coors Energy Company <br />(CEC) Application for Permit Renewal (1997), filed with the then Colorado <br />Division of Minerals and Geology (CDMG). CEC has consistently used <br />this procedure beginning with the fourth quarter, 1997 sample collections. <br />Consent to dispose of Mine Waste Rock at the Keenesburg site (MR #34, <br />8/98) resulted in minor changes to the approved ground water monitoring <br />plan, pursuant to requests from the Colorado Department of Public Health <br />and Environment (CDPHE). However, field collection procedures, the <br />order of sampling, field measurements and sampling frequency protocols, <br />remain essentially unchanged since 1997. <br />Test America Laboratories (name change from Severn-Trent), Arvada, <br />Colorado, has performed all of the 2010 laboratory analyses and prepared <br />the quarterly sample results. [Note: The laboratory results pages displayed <br />in this report represent only the "Executive Summary", and is not the entire <br />text of the laboratory work. Complete copies of each quarterly report are <br />available in the files at the Keenesburg Mine office.] The water monitoring <br />analysis and process management expertise continues to be provided by <br />Doty and Associates, Golden, Colorado, as consultants. <br />Ground Water Monitoring and Quality Analysis <br />The formal ground water sampling program for the Keenesburg Mine was <br />initiated in 1992. Ground water quality information has consistently been <br />obtained from monitor wells located: 1) upgradient, 2) within the <br />disturbance area, and 3) downgradient from the mine site. The monitoring <br />program provides a basis for comparison of information between a baseline <br />and the existing site conditions relative to ground water flow and water <br />quality at the site. <br />The water quality test results, obtained from the data collected in the field <br />and from the analytical ground water quality reports, support the contention <br />AHR-2010 -30-