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• <br />0 <br />elevation in well P-1 is slightly less than the measuring point elevation of this <br />well. <br />Map M54C presents the alluvial aquifer piezometric contours for September, <br />1986. Contours are not continuous because the presence of the alluvial areas exists <br />only in valley bottoms. The hydraulic gradient in Flume alluvium is approximately <br />0.09 ft/ft, which is very similar to the channel gradient and also the hydraulic <br />gradient of the underlying Third White Sandstone aquifer. The hydraulic gradient in <br />the Pyeatt alluvial aquifer is less and varies from 0.05 ft/ft in the mine area to <br />less than 0.02 ft/ft in the P-1 area. <br />2-523x REVISED FEB 13'87 <br />This is due to perennial <br />floe in Pyeatt Gulch <br />since the Spring of 1984. Water -level <br />• <br />0 <br />elevation in well P-1 is slightly less than the measuring point elevation of this <br />well. <br />Map M54C presents the alluvial aquifer piezometric contours for September, <br />1986. Contours are not continuous because the presence of the alluvial areas exists <br />only in valley bottoms. The hydraulic gradient in Flume alluvium is approximately <br />0.09 ft/ft, which is very similar to the channel gradient and also the hydraulic <br />gradient of the underlying Third White Sandstone aquifer. The hydraulic gradient in <br />the Pyeatt alluvial aquifer is less and varies from 0.05 ft/ft in the mine area to <br />less than 0.02 ft/ft in the P-1 area. <br />2-523x REVISED FEB 13'87 <br />