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In the American Tunnel three longholes (700, 702 and 704) were collared at the 1500 <br />Runaround on the southeast rib and drilled to the southeast at different angles. The <br />longholes were originally drilled for mineral exploration objectives, not for estimating <br />hydraulic parameters. Hole 700 was drilled at an upward angle of '/2 degree; hole 702 <br />was drilled at an upward angle of 10 degrees; and hole 704 was drilled at a <br />downward angle of 10 degrees. "Downhole" surveys were not conducted in any of <br />these longholes. All three holes were grouted at the collar and fitted with shut-off <br />valves and pressure gauges in preparation for the flow tests. Two longholes (781 and <br />778) were located at the 0700 Runaround. Hole 781 was drilled into the southeast <br />rib at an upward angle of 17 degrees, but was not surveyed. Hole 778 was drilled <br />into the northwest rib at a bearing to the north-northeast. Continuous downhole <br />surveys show the hole started at an upward angle of 9 degrees and finished at an <br />upward angle of 24 degrees. <br />5.2 F/ow Test Methodo%gy <br />The first flow test was conducted from hole 700 at a constant discharge of 135 <br />gallons per minute (gpm). A Water Specialties Corporation model ML-04 flowmeter <br />was used to measure discharge and Ashcroft 300 psi gauges were used to measure <br />water pressures in the discharge line from hole 700 and at the collars of holes 702 <br />and 704. Holes 781 and 778 at the 0700 Runaround were checked during the test; <br />however, neither hole responded to the first test. The flow test was conducted for <br />sunnylwpltraci122511Mar1993.Rpt 28 <br />H:D SII11011 HYDRO-SERRCH <br />