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<br />2.0 GROUND-WATER LEVELS <br />Water levels or water pressure have been measured :in 39 wells <br />at Trapper Mine. Wells GF1; GF3; GD2, GP3, GP4, and well 81-03a <br />are flowing wells and pressure readings on these wells have been <br />converted to static water head in feet above land surface. Well <br />GD1 is not measured for water level because a pump is installed in <br />this well. Monitoring wells GD3, GF11 and GLUX-1 were installed in <br />1988 and well GMP-1 was installed in 1990. <br />The locations of the monitoring wells are shown on Map No. <br />2-1. Wells GD1 and GF1 are completed in the Twenty Mile Sandstone, <br />while well GF2 is completed below the R coal in the U aquifer <br />system. Seven wells, GA1, GE1, GD2, GF6, GP1, GP5 and GP6 are used <br />• to monitor the QR aquifer. Wells GA2, GB1, GF3, GP2, GP4 and GP8 <br />are used to monitor the KLM aquifer. Seven wells, GB5, GC1, GE2, <br />GF4, GP3, GP7 and GMP-1 are used to observe changes in the HI <br />aquifer. Wells GB2, GC2, P8, 81-03a and GP9 are used to monitor <br />the Third White Sandstone aquifer. Wells GE3 and P5 are completed <br />in the Second White Sandstone between the G and F coals, while <br />Glux-1 is used to monitor the First White Sandstone. Well P3 is <br />perforated in the Lewis Shale. Four alluvial wells, GC3, P1. J1 <br />and COY are used to monitor the Flume, Pyeatt, Johnson and Flume <br />alluvium. Wells GF5 and GF7 are completed in the backfill aquifer <br />-. in an area where the HI seams were mined. Wells GD3 and GF11 were <br />completed in:backfill aquifers in areas where the.QR aquifer .was <br />mined. <br />2-1 <br />