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1 <br />' Monitor holes 36-2L and 35-4L have declined over the reporting period. Monitor hole 4-20L <br />continued to show a decline until the last reading of this monitoring period when it showed a <br /> <br />water level rise of almost two feet. <br />The response of 'lower sandstone facies" monitoring holes 2-17L, 2-7L and TW2-7L to mining <br />and leaking exploration holes indicates the area of influence in the 'lower sandstone facies' is <br />larger than That in either the 'upper sandstone facies' or the °siltstone-coal facies'. However, <br />the response of these monitoring holes to low flows of about 1 gpm in the leaking exploration <br />' holes further indicates the low water flow characteristics of the °lower sandstone facies'. <br />' From the baseline data, all three zones should be classified as 'aquitards' in that they will yield <br />water but at very slow rates. Mining in fhe D Seam so far has encountered only small flows of <br />water and the mine is essentially dry. Water leaking out of caved areas is routed to the sump <br />' at the end of Sixth East. Anew borehole was drilled to this sump and the pump was removed <br />from the old borehole and installed in the new one. From there it is pumped to the surface <br />' through a borehole and discharged. This borehole is designed as sump dewatering hole 2 or <br />SDH-2. <br />' 2.2.2.4 Bedrock Water Quality Water sampling and analysis are no longer required from the <br />bedrock monitoring holes. However, prior to entering Federal leases C-8424 and C-8425, one <br />' water quality sample will be collected and analyzed from each of the monitoring holes in those <br />two leases. <br />' The Deserado Mine First Annual Hydrology Report (December 1985) contains baseline water <br />quality data for the bedrock zones. <br />' 2.2.2.5 Mlne Water Balance Table 2-3 shows the water balance for the Deserado Mine. A <br />' description of how these numbers are arrived at follows. <br />1 <br />1 <br /> <br />1 <br />1 <br />11 <br />1 <br />