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<br /> <br /> <br />~~ <br />~ , <br />I~ <br />~J <br />I, <br />I <br />four hours and five minutes (245 minutes). Recovery was monitored in holes 700 and <br />704 for 90 minutes after hole 700 was shut in. <br />The second flaw test was conducted from hole 781 at a constant discharge of <br />approximately 48.5 gpm. The test lasted four hours 1240 minutes) and recovery was <br />monitored for 90 minutes. The longholes at the 1500 Runaround were not monitored <br />during the second test. <br />5.3 Measurement of Hydiau/ic Head <br />No water was encountered in the drill hole in the Terry Tunnel (F-level). However, <br />circulation was lost into an open fracture at one point indicating that there is some <br />fracture permeability. The lack of water in the presence of fracture permeability <br />proves that the fractured rocks surrounding the Terry Tunnel (nominal elevation <br />11,562 feet msl) are not presently saturated. Unsaturated rocks were expected at F- <br />level based on the apparent equilibrium water levels observed in 1959 - 1961 (Section <br />3.0). <br />Water flows from all drill holes in the vicinity of the 0700 and 1500 runarounds in the <br />American Tunnel (nominal elevation 10,668). This indicates that the American Tunnel <br />is below the water table. The permeability of the volcanic rocks is generally so low <br />that water only enters the tunnel in a few permeable fractures. <br />a~nnylwpltreci1225 i 1Mar1993.Rpt <br />29 <br />fl~l S{{110{1 HYDRO-SEARCH <br />