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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, 8198) 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 />20031aboratory 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 at the Keenesburg <br />Mine office.] <br />Ground Water Monitoring and Oualitv 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 />monitor wells located: 1) upgradient, 2) within the disturbance area, and 3) <br />downgradient to the mine site. This monitoring program provides a basis <br />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 />The water quality test results, obtained from the data collected in the field <br />and from the analytical ground water quality reports, continue to suggest <br />that the overall groundwater quality in the area has not been adversely <br />impacted by, 1) the earlier Keenesburg Coal Strip Mine operations, or 2) the <br />subsequent reclamation activities (to include both the ash and the mine <br />waste rock disposal operations). While altered within the Keenesburg Mine <br />AHR-2003 -51- <br />