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1 ' The water levels in holes 3 and 4 were more consistent this year than in the past and was generally higher than in the past. The pH on hole 3 has been increasing for the past few years. This increase is most likely due ' to the wells not being evacuated prior to sampling. The conductivity was lower this year on both holes than during the last few years. The water level, pH and conductivity of the refuse piezometers was within the typical range of values monitored in the past. ' MINE INFLOMS Appendix V contains the 1987 Mine Inflows Maps for the #1 and q3 Mines. ' The only information available on the mines now is the water level. The dewatering holes for both mines were exposed this summer for monitoring the water levels. The 4" steel pipes with a foot valve at the bottom are not ' well suited for quality monitoring therefore only water levels are taken. To develop an augmentation plan for water not being pumped out of the No. 1 Mine, a projection was made in technical revision TR04 on the rate of ' filling. The projections were made assuming no seasonal variation. The actual filling rate was slower than projected from August 1986 through April 1987, faster than projected from May 1987 through July 1987 and close to ' the projection for August and September 1987. The water elevation on October 1, 1987 had reached the level of North Thompson Creek adjacent to the portals. The water level is projected to raise above the portal dams during the next ' year. The total estimated inflow during the year was 31.6 million gallons (90.0 A.F. ). The dewatering hole to the No. 3 Mine was uncovered during reclamation ' activities and has been monitored since that time. The filling rate for the mine appears to be seasonal. The inflow #8 shown on previous mine inflow maps is piped to the portal and discharged, see analysis in Appendix VI. ' The total discharged from the mine was measured to be 12.8 million gallons and the estimated inflow not discharged was 14.5 million gallons for a total estimated inflow of 27.3 million gallons (83.8 A.F.). The No. 3 Mine discharge did show seasonal flow. This seasonal flow indicates a surface connection opposed to an old mine connection as projected in the seal design minor revision MR05. ' There was no comsumptive use of water at the mine site this year. ' MINE HATER QUALITY The mine water quality is shown in Appendix VI. The only quality monitoring. ' done in the No. 1 Mine was a water sample taken July 18, 1987 just prior to installing concrete dams or seals in the lower portals. Large inflows of B-seam discharges were not observed but the high total iron content of ' the sample indicated possible inflows. The discharge from the No. 3 Mine showed a seasonal flow but all other ' parameters were fairly consistent during the year.