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WATER QUALITY SAMPLING PROTOCOL <br />Procedure <br />The current ground water sampling procedure used at the Keenesburg Mine <br />site was approved as part of the Coors Energy Company (CEC) Application <br />for Permit Renewal (1997). CEC has employed this procedure beginning <br />with the fourth quarter, 1997 sample collections. Consent to dispose of <br />Mine Waste Rock at the Keenesburg site (MR #34, 8/98) resulted in minor <br />changes to the previous ground water monitoring plan, pursuant to requests <br />from the Colorado Department of Public Health and Environment <br />(CDPHE). However, field collection procedures, the order of sampling, <br />field measurements and sampling frequencies protocols remain essentially <br />unchanged. CEC continues to perform ground water sampling on a <br />quarterly basis. <br />Severn-Trent Laboratories (Arvada, Colorado) has performed all of the <br />20041aboratory analyses and prepared the quarterly sample results. [Note: <br />. The laboratory results pages displayed in this report are intended to <br />represent only the summary, and not the entire text of the laboratory work. <br />A complete copy of each quarterly report is available from the files at the <br />Keenesburg Mine office.] <br />Ground Water Monitorine and Quality Analysis <br />The formal ground water sampling program for the Keenesburg Mine was <br />initiated in 1992. Ground water quality information has been obtained from <br />six monitor wells located: 1) upgradient, 2) within the disturbance area, and <br />3) downgradient from the mine site. This monitoring program provides a <br />basis for comparison of information between a baseline and the existing site <br />conditions relative to ground water flow and water quality at the site. <br />CEC continues to believe that the water quality test results, obtained from <br />the data collected in the field and from the analytical ground water quality <br />reports, support the contention that the overall groundwater quality in the <br />area has not been adversely impacted by, 1) the earlier Keenesburg Coal <br />. Strip Mine operations, or 2) the subsequent reclamation activities (to <br />include both the ash and the mine waste rock disposal operations). While <br />AHR-2004 -49- <br />