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INFLOW TO MINE WORKINGS <br /> <br />As part of the water management plan, Kaiser has monitored water levels in Wells H-10 and B-6 to <br />assess the rate of mine flooding. From October 1986 to May 1987 water level in H-10 rose approximately <br />eight Ceet, while B-6 remained dry. Water was encountered in Well B-6 for the first time in October 1987. <br />However, as indicated on Figure 1 and accompanying cross sections, water elevations in the two wells are <br />not the same. The primary reason appears to be the unmined blocks of coal which separate the various <br />mined areas. These unmined blocks act as barriers which allow isolated areas of the mine to till at different <br />rates. <br />Figure 1 presents the water elevations as projected during April and October 1986, October 1987 and <br />October 1988. As displayed on the cross section maps, the mine workings follow the coal structure dipping <br />to the north and west. The stabilization of water level measurements at Well H-10 during 1987 and 1988 <br />may be due to the lower portion of the mine (in the area of Well H-10) being filled to a point where excess <br />water would Oow around a coal barrier and enter that portion of the mine where Well B-6 is located. This <br />may also explain the immediate presence of water observed in Well B-6 from the third to the fourth quarter <br />oC 1987 and the rapid rise in water level during each sampling in 1988. However, the change in water quality <br />and the surge of water would suggest inflow from a sealed area of the mine or aquifer source. With the <br />information collected during 1988, the inflow projections have been revised on Figure 1 to indicate a slower <br />rate of inflow than originally projected. <br />