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• WATER QUALITY SAMPLING PROTOCOL <br />Procedure: <br />The ground water sampling procedure used at the Keenesburg Mine site in <br />2009 was originally approved as part of the Coors Energy Company (CEC) <br />Application for Permit Renewal (1997), filed with the then Colorado <br />Division of Minerals and Geology (CDMG). CEC has consistently <br />employed this procedure beginning with the fourth quarter, 1997 sample <br />collections. Consent to dispose of Mine Waste Rock at the Keenesburg site <br />(MR #34, 8/98) resulted in minor changes to the approved ground water <br />monitoring plan, pursuant to requests from the Colorado Department of <br />Public Health and Environment (CDPHE). However, field collection <br />procedures, the order of sampling, field measurements and sampling <br />frequency protocols remain essentially unchanged since 1997. <br />Test America Laboratories (name changed from Severn-Trent), Arvada, <br />Colorado, has performed all of the 2009 laboratory analyses and prepared <br />the quarterly sample results. [Note: The laboratory results pages displayed <br />• in this report represent only the "summary ", and not the entire text of the <br />laboratory work. Complete copies of each quarterly report are available in <br />the files at the Keenesburg Mine office. ] The water monitoring analysis and <br />process management expertise continues to be provided by Doty and <br />Associates, Golden, Colorado, as consultants. <br />Ground Water Monitoring and Quality Analysis : <br />A formal ground water sampling program for the Keenesburg Mine was <br />initiated in 1992. Ground water quality information has consistently been <br />obtained from six 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 groundwater flow and water <br />quality at the site. <br />CEC believes that the water quality test results, obtained from the data <br />collected in the field and from the analytical ground water quality reports, <br />support a contention that the overall groundwater quality in the area has not <br />been adversely affected by; 1) the earlier Keenesburg Coal Strip Mine <br />=, operations, or 2) the subsequent reclamation activities (which include both <br />AHR-2009 -34-