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• observe in this AHR, when compared to previous years, will appear in the `counts' <br />column of each SUMMARY OF WATER QUALITY DATA. This change is <br />particularly noticeable for SAR counts. Consequently, with this change, the SAR counts <br />compare much better with the counts of associated constituents, than they have in <br />previous reports. You will also note that, over time, analysis results have been expressed <br />in different units (MG/L VS. MG/L, etc.). These units will be edited and standardized in <br />future Hydrology Reports. <br />If you have any questions or require additional information please contact me at (970) <br />870-2730. <br />COLORAD YAMP11A COAL COMPANY <br />CPirrlti~2~.J <br />Joe Shoemaker <br />Environmental Specialist <br />Cc: Permit No, C-81-071; 1997 AHR file <br />• <br />r1 <br />U <br />