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• Mine inflows during 1982 were extremely small. The estimate of <br />total mine inflows during Water Year 1982 of 0.33 acre-ft. is <br />probably high and may include measurement of water pumped into <br />the mine for dust control. The quality of mine water is <br />considered good and offers no problem for treatment and <br />discharge. No mine water discharge occurred during Water Year <br />1982. <br />Mine water inflow for Water Year 1983 is expected to be similar <br />to that experienced during Water Year 1982. Possible discharge <br />of mine water would be of such a small quantity and short <br />duration that any discharge from the sedimentation pond would be <br />dominated by treated storm water runoff. <br />• The construction of the waste rock pile has had no impact on <br />groundwater as the site is underlain by approximately 50 ft. of <br />unsaturated colluvial soils consisting primarily of clay. Mining <br />activities have had no effect on springs during the 1982 Water <br />Year. The springs within 100 ft. above or below the F-Seam in <br />the permit area show no change in flow characteristics since <br />mining and construction commenced. <br />Mining and construction activities have not adversely impacted <br />the North Fork. Water withdrawals during Water Year 1982 were <br />less than .02% of river flows. Even under lower flow conditions <br />or higher withdrawal rates in subsequent years, withdrawals will <br />not result in a measureable change in streamflow rates on the <br />• North Fork. <br />-5- <br />