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I~ GEOPHYSICAL SOIL MOISTURE ::EASURE"IENTS A geophysical soil moisture measurement study has been conducted in ' accordance with Rule 2.06.8 of this application. Data have been col- lected to document soil moisture conditions +ahich exist within the "unconsolidated stream-laid deposits holding streams" shown on Map 1, Twentymile Park Hydrology, and Map 4, Energy Mine No. 3 Ground Water ' Hydrology. Specifically, the data were collected to document, if pos- sible, the presence of capillary water extending from the water table upward into the root zone. The study was conducted in late summer (October, 1980), at a time of year when the water table and capillary ' fringe should be at their lowest levels. Thus, if capillary water vas found within the root zone at the time of measurement, the root zone could be determined to have a perennial water supply. The soil moisture data were collected by taking measurements in i seven neutron probe access tubes with a nuclear soil moisture gauge. The procedure consisted of drilling a two-inch auger hole through the topsoil and the alluvium to the eater table; setting a two-inch diameter alluvnum irrigation pipe in the hole, allowing the access tube to settle Eor at least 24 hours; and logging the access tube Erom the bottom up a t six-inch intervals with the nuclear soil moisture gauge. A litholog3c description of each auger hole vas obtained during drilling. The seven neutron probe access tubes are located at sites shown on Map 4, Energy Mine No. 3 Ground Water Hydrology, in the intermittent and perennial streams draining the permit area. These locations are: 1) i Foidel 63, on the vest bank of the lover reach of Foidel Creek; 2) Middle O1, on the east bank of Middle Creek adjacent to Pit 3B South; 3) Middle A2, on the vest bank of Middle Creek above the confluence with Foidel Creek; 4) Middle ~J, on the east bank of Kiddie Creek adjacent r r ~" ( APPR~211~D JUN 2 E 2000