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III IIIIIIIIIIIIIIII <br />Findin¢s• <br />AA-1 - In reviewing laboratory results, (1996 data compared to 1995 data) AA-1 <br />saw a 43.8% reduction in conductivity, a 44.6% reduction in total <br />dissolved solids, 17.2% increase in manganese and a reduction of 86.0% in <br />total iron. <br />In evaluating the effects of the mining operation, based on conductivity, <br />total dissolved solids, and total iron and manganese, the Bear No. 3 Mine <br />had no significant deleterious effects on groundwater during 1996 <br />compared with data generated from 1987 through 1996. <br />AA-3 In reviewing laboratory results, (1996 data compared to 1995 data) the <br />conductivity and total dissolved solids in well AA-3 increased 104% and <br />145% respectively. The concentration of manganese and total iron both <br />decreased 100.0% to an undetectable level. This increase in conductivity <br />and total dissolved solids is probably the result of water infiltrating into well <br />AA-3 from a broken mine discharge line located upstream from AA-3 <br />several months earlier. As can be seen on map "Figure 11 ", monitoring well <br />AA-3 is located close to ditch "A", a perimeter ditch surrounding the mine. <br />It is believed that discharge water flowing in this ditch, and over monitoring <br />well AA-3, infiltrated into this well thus temporarily contaminating it. Since <br />Bear Coal Company is not currently discharging any mine water, firture <br />water results should show a steady decrease in conductivity and total <br />dissolved solids. <br />-3- 4/98 <br />