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• in each of the intermittent drainages in the proposed permit area <br />were found to be nearly impermeable, because when digging eapoaed a <br />gravel layer, the water level is the pit suddenly rose several feet. <br />This would indicate that, while the gravel depoeita are satuarated <br />and transmit confined water when ezcavated, the clay surrounding the <br />gravel severely hinders these depoeita from transmitting water to or <br />from the overlying stream and root zone. This fact is documented by <br />the decline iri the alluvial well water levels in the fall, as shown <br />on Figure 6, Ground dater Level Hydrographa; the low water table <br />reflected on Map 17, Nine No. 3 Stream Channel Cross-Sections; and <br />the lack of base flow to the intermittent streams in the summer <br />months from ground water contribution. The water table under the <br />• intermittent streams is lowered substantially by underflw drainage <br />in summer, and by October the water table is below the root zone, as <br />reflected on Nap 17, Mine No. 3 Stream Channel Cross-Sections. <br />Aa discussed under Rule 2.04.7, the perennial stream of Fish <br />Creek drains the ground water discharge area of Twentymile Park. <br />While the lithology of the Fish Creek alluvial material is similar <br />to that of Foidel and Middle Creeks, in late summer the root zone <br />does not reach the water table in the alluvium, as show on Map 17, <br />Mine No. 3 Stream Channel Cross-Sections. <br />Soil Moisture Measurements <br />Relative soil moisture content is measured by using a nuclear <br />soil moisture measurement gauge in a neutron probe access tube, a <br />process which can detect soil moisture in the capillary fringe above <br />2.06-21 <br />