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• EXHIBIT 38 <br />GEOPHYSICAL SOIL MOISTURE MEASUREMENT STUDY <br />A geophysical soil moisture measurement study has been conducted in <br />accordance with Section 785.19 of this application. Data have been <br />collected to document soil moisture conditions which exist within the <br />"unconsolidated stream-laid deposits holding streams" shown on !4ap 5, <br />North Park Hydrology, and Map 15, Kerr Mine Area Ground Slater Hydrology. <br />Specifically, the data were collected to document, if possible, the <br />presence of capillary water extending from the water table upward into <br />the root zone. <br />This study was conducted in late summer, during the week of <br />September 15, 1980, at a time of year when the water table and capillary <br />_ fringe should be at their lowest levels. Thus, if capillary water was <br />found within the root zone at the time of measurement, the root zone <br />could be determined to have a perennial water supply. These findings <br />would indicate the presence of a subirrigated alluvial valley floor. <br />The soil moisture data were collected using neutron probe access <br />tubes and a nuclear soil moisture gauge. The procedure consisted of <br />drilling a two-inch auger hole through the A and B soil horizons and the <br />alluvium to the water table; setting a two-inch diameter alluminum <br />irrigation pipe in the hole, allowing the access tube to settle for at <br />lease 24 hours; and logging the access tube from the bottom up at six- <br />inch intervals with a nuclear soil moisture gauge. A lithologic des- <br />cription of each auger hole was obtained during drilling. <br />The neutron probe access tubes are located at the five environ- <br />mental monitoring station sites <br />plus three additional sites in <br />shown on Map 5, North Park Hydrology, <br />the intermittent draws draining the <br />• proposed permit area. The environmental monitoring stations are: 1) <br />