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- 6 - It is difficult to evaluate the origin of the water which caused the saturation; much of it was a result of the spring thaw and the exceptionally high rain fall during that part of t]ze year. It cannot be excluded that some water was seeping locally from the outcrop of the coal seam. Much of the water, as observed during the 1980 spring season, occurred at a higher elevation above the coal seam as could be observed on a slide which developed immediately west of the proposed mine entries. For all practical purposes, it has to be assumed that a complete saturation of the area can occasionally develop; it caa be expected that the saturation would develop during a spring season and during a year with unfavorable climatic con- , ditions. As there have been no data available on the fluctuation of the ground water surface later in summer and ia11 of a year, we recommended that a series of piezometers be installed along the center lines of the proposed mine entries. Two piezometers were installed at each entry, one of them close to the proposed portal and the other farther to the south. They were installed in September, 1980; to this date, only two readings were made on ground water in these piezometers and in piezometers in- stalled in borings E-1 to E-3 and A-8. Data obtained are presented in Table 1; ground water levels are also plotted in Profiles Along Eatries 1-5, Plates 2 - 6. It is evident from these data that even as late as in October, ground water was identified in several piezometers in profiles along the entries; this occurrence appears to be limited to some locations only. It is also evident that, without some remedial measures such as drainage, ground water occurrence can be expected at various depths at any time of the year. It is desirable to continue to monitor ground water levels in all piezometers w}ich ?~ave bees installed to obtain more r ao.noao cwuuw ac