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1 <br />1 <br />1 <br />1 <br />1 <br />1 <br />1 <br />1 <br />Water Quality <br />SwrQnaries of the water quality data for the springs is presented on Table <br />31 to Table 36. No significant changes in the spring water cuality are <br />evident. <br />IMPACTS AND FUTURE MONITORING <br />No significant unpredicted adverse impacts were detected from the 1984 <br />hydrologic monitoring program. The only significant variation from the <br />predicted impacts was the less than predicted declines in the Midale <br />Sandstone. This may be due to change=_ in the location of the main area of <br />mining in the No. 5 Mine and an increase in recharge. At least one more <br />year of data will be required tc properly evaluate this condition. <br />The only mitigating measure instituted in 1984 was the upgrading of the <br />No. 9 Mine discharge treatment system to eliminate occasional pH <br />excursions. The upgrading included installing larger CO9 storage tanks at <br />the site and constructing a manifold system to administer the C02 more <br />efficiently. <br />We believe that the parameters indicated on Table 37 do not have to be <br />monitored any more. Over the period of monitoring the tables indicates <br />that no significant natural source of any of these parameters have been <br />detected and Empire Energy does not employ anything in its operations that <br />could produce measurable quantities of any of these parameters. <br />Presently, up to four years of data exist for some of the monitoring. N <br />review of the data indicates that some of the parameters analyzed at the <br />various stations no longer require monitoring, Those parameters are <br />identified in Tab]e 37. <br />-6- <br />