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PERMFILE130084
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PERMFILE130084
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Last modified
8/24/2016 10:31:04 PM
Creation date
11/25/2007 10:10:10 PM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1982056
IBM Index Class Name
Permit File
Doc Date
12/11/2001
Section_Exhibit Name
EXHIBIT 42b EXHIBIT 2 GEOPHYSICAL SOIL MOISTURE MEASUREMENTS
Media Type
D
Archive
No
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• EXHIBIT 2 <br />Geophysical Soil Moisture Measurements <br />• <br />A geophysical soil moisture measurement study has been conducted in <br />accordance with Rule 2.06.8 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 Map 1, <br />Twentymile Park Hydrology, and Map 4, Mine No. 3 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. The study was conducted in late summer (October, 1980.), <br />at a time of year when the water table and capillary fringe should be at <br />their lowest levels. Thus, if capillary water was found within the root <br />• zone at the time of measurement, the root zone could be determined to <br />• have a perennial water supply. <br />The soil moisture data were collected by taking measurements in <br />seven neutron probe access tubes with a nuclear soil moisture gauge. The <br />procedure consisted of drilling a two-inch auger hole through the topsoil <br />and the alluvium to the water table; setting a two-inch diameter aluminum <br />irrigation pipe in the hole, allowing the access tube to settle for at <br />least 24 hours; and logging the access tube from the bottom up at six- <br />inch intervals with the nuclear soil moisture gauge. A lithologic <br />description of each auger hole was obtained during drilling. <br />The seven neutron probe access tubes are located at sites shown on <br />• Map 4 Mine No. 3 Hydrology, in the intermittent and perennial streams <br />• <br />
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