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<br />' the pocket of this report. Bedrock monitoring consists of collecting hydrologic data from monitoring <br />holes and multiple completions at each location in order to monitor three zones: the Upper <br />' Sandstone Facies; the Coal and Siltstone Facies; and the Lower Sandstone Facies. The Upper <br />Sandstone Facies, coal and Siltstone Facies, and Lower Sandstone Facies are re}en'ed to as upper, <br />middle and lower respectively as a matter of simplicity. The Deserado Mine coal seams are located <br />1 near the bottom of the Coal and Siltstone Facies (middle zone). Water levels are measured <br />quarterly in the fifteen groundwater monitoring holes. The water level is measured monthly in <br />' QAL-5, and samples collected quarterly to analyze for the twenty two water quality parameters listed <br />in Table 2-1. <br />' The alluvial monitoring hole, RM-1, was drilled east (downstream) of the pond for Refuse Disposal <br />Area 2/3 on September 28, 1989. The location of this hole is shown on Plate 1. This monitoring <br />hole was drilled to fulfill a requirement of the mine permit. RM-1 was drilled to bedrock at a depth <br />' of 32 feet. No water was encountered during drilling. The hole was drilled with seven-inch hollow <br />flight augers and cased with perforated rivo-inch PVC pipe. The hole is monitored on a monthly <br />' basis. No water has been detected in RM-1 to date. If detected, the water level will be measured <br />and samples collected quarterly to be analyzed for the parameters listed in Table 2-1. <br />t During October 1984, the Taylor Draw Reservoir facilities were completed and the reservoir began <br />filling with water. The area around the alluvial groundwater holes has become a shallow water mud <br />' flat area with the deposition of mud, silt and sand at high reservoir levels. As a result, alluvial <br />groundwater monitoring holes Qal-1, Qal-2, Qal-3, Qal-4 and Oal-6 have been destroyed and are <br />no longer available for monitoring. Alluvial hole Qal-5 is still being monitored. <br />During May 1987, longwall panel 1 was mined past the location of 2-12U. The location was <br />' subsided and the monitoring hole could no longer provide usable data. Accordingly, Western Fuels <br />submitted an application for a Technical Revision on 6/7/88 to eliminate groundwater monitoring at <br />2-12U. The Technical Revision was subsequently approved. <br />As per the DMG permit requirement, water from the groundwater monitoring holes 29-4, 30-8, 31-7 <br />and 33-8 in Leases C-8424 and C-8425 were sampled and analyzed during the 1996-1997 water <br />year. Appendix I gives the analysis results. <br />' 2.2 Summary and Analysts of Deserado Mlne Hydrology Data <br />Data collected during this water year (October 1, 1996 to September 30, 1997) have been <br />' summarized and compared with the data from the baseline hydrology inventory. Surface water and <br />ground water discussions are presented separately in the following sections. <br />1 <br />' 5 <br />