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' MINING AND RECLAMA• N PLAN <br />^ t<1T. GUNNISON NO. l MINE <br />T ' <br />October, 1979 <br />Revised March, 1981 <br />Revised August 2S, 1981 <br />Revised January 25, 1982 <br />Revised February 5, 1982 <br />An attempt was made to pumptest SOM-13-H on September 30, 1981. SOht-13-H is <br />cased with 4 inch pipe to a depth of 188 feet. On September 30, depth of water <br />was measured at 162.9 feet, leaving 25 feet or 16.4 gallons of water for testing. <br />Again this was felt to be too low a water level to test using either pump, air lift, or <br />bailer techniques. Previous measurements in August 1981, showed a depth to water <br />of 127.7 feet. It is, therefore, felt the change in water depth (35 feet) from August <br />to September was associated with mine construction activities (dewatering of <br />landslide materials), which even if testing had been possible would have made <br />analysis of the data difficult if not impossible. <br />On November 20, 1981, an attempt was made to test 3S-H-1. Depth to water in <br />this well is 449.79 feet and total depth is 948.4 feet. However, since the hole is <br />cased with 2 inch diameter casing only 21.38 gallons of water was contained in the <br />casing. In order to test the well, a one inch diameter PVC hose was lowered down <br />to the bottom of the hole and attached to a compressor. The PVC hose had been <br />leak tested at the surface prior to insertion in the well. The compressor was <br />turned on until maximum air flow was reached, but no water, only moist air <br />returned to the surface at a steady rate. The PVC hose was withdrawn from the <br />well and leak tested once again. Since no leaks were found, it was decided there <br />was not enough water in the well to lift the 449.79 feet. <br />Well 38-H-2 was tested on November 20, 1981, using the same method as Well 38- <br />H-1. Depth to water in this well was 764.29 feet and total depth was 948.4 feet. <br />The PVC hose was placed at its maximum depth of 900 feet. Since the well was <br />completed with two inch casing, there were 22 gallons above the bottom of the <br />hose. Tlie results of this test were the same as 38-H-1, air return, but no water. It <br />was, therefore, concluded that there was insufficient water to lift the 764.29 feet <br />to the surface. " <br />2-303a4 <br /> <br />