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1 <br /> - 6 - <br /> <br /> It is difficult to evaluate the origin of the water which <br />c <br />d th <br />h <br />t <br />ti <br />f i <br />l <br />f <br />h <br />i <br /> ause <br />ura <br />on; muc <br />e sa <br />o <br />t was a resu <br />t o <br />e spr <br />ng <br />t <br /> thaw and the exceptionally high rain fall during that part of <br />' the year. It cannot be excluded that some water was seeping <br /> locally from the outcrop of the coal seam. Much of the water, <br />' as observed during the 1980 spring season, occurred at a higher <br /> elevation above the coal seam as could be observed on a slide <br />' which developed immediately west of the proposed mine entries. <br />' For all practical purposes, it has to be assumed that a <br /> complete saturation of the area can occasionally develop; it <br />' can be expected that the saturation would develop during a <br />i <br />d d <br />i <br />ith <br />f <br />bl <br />li <br />ti <br />- <br /> spr <br />ur <br />avora <br />ng season an <br />ng a year w <br />un <br />e c <br />c con <br />ma <br /> ditions. <br /> <br /> As there have been no data available on the fluctuation of <br />t the ground water surface later in summer and fall of a year, <br /> we recommended that a series of piezometers be installed along <br /> the center lines of the proposed mine entries. Two piezometers <br /> were installed at each entry, one of them close to the proposed <br /> portal and the other farther to the south. They were installed <br /> in September, 1980; to this date, only two readings were made <br /> on ground water in these piezometers and in piezometers in- <br />' stalled in borings E-1 to E-3 and A-8. Data obtained are <br /> presented in Table 1; ground water levels are also plotted in <br />' Profiles Along Entries 1-5, Plates 2 - 6. It is evident from <br /> these data that even as late as in October, ground water was <br /> identified in several piezometers in profiles along the entries; <br /> this occurrence appears to be limited to some locations only. <br />' - <br /> It is also evident that, without some remedial measures <br />' such as drainage, ground water occurrence can be expected at <br />h <br />ti <br />f <br />h <br />i <br />d <br /> me o <br />s at any <br />e year. <br />var <br />ous <br />t <br />ept <br />' It is desirable to continue to monitor ground water levels <br /> in all piezometers which have been installed to obtain more <br /> ~roxo cowun.o, Nc <br />