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-lo- <br />• of 100 feet, except at boring 77-14C. Boring 77-14C is near an <br />existing intermittent stream and the RQD was relatively constant <br />with depth. At the locations of the small intermittent streams <br />we anticipate encountering weathered materials to depths <br />greater than 100 feet. <br />Ground Water Conditions <br />The results of drilling indicate two natural water tables in the <br />area. There is a near-surface perched water table at an approximate <br />depth of 50 feet and an aquifer water table coincident with the coal <br />bed.. The perched water table was observed at a depth of 50 feet at <br />boring 77-15; 55 feet in 77-17; and 25 feet in 77-18. A second water <br />level was encountered at 460 feet in 77-15 and 450 feet in 77-18. <br />Stabilized free water levels were measured in the exploratory borings <br />• as shown on Table II and range in depth from 17 to 100+ feet. The <br />free water levels on Table II do not necessarily represent natural <br />tables in all conditions, because drilling fluid was used at some <br />locations. We recommend that the borings be monitored on a monthly <br />basis to determine if a stable water level exists. <br />We believe water will occur in the coal. As the pit is lowered, <br />pumping may be required at some locations. There is not a large <br />quantity of water within the coal and by controlling the surface <br />drainage, little ground water ~vill be generated from within the pit. <br />The perched water table at a depth of approximately 50 feet varies <br />considerably from year to year. During wet years, a considerable perched <br />C, <br />J <br />