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LJ <br />shallower. A greater natural variation in the conductivities from <br />well GE3 is expected. Changes in the field conductivities for <br />aquifers monitored at the GE site are not thought to be caused by <br />any mining activities from Trapper Mine. Mining on the west side <br />of the Trapper Mine permit area was re-started in 1988. <br />Twenty Mile Sandstone well GF1 and U aquifer well GF2 have <br />shown very little change in field conductivity during the period <br />presented (1982 through 1990) in Figures B-14 and B-15. <br />Concentration plots with less scatter are expected from these <br />deeper aquifers. Wells GF3 and GF4 are completed in the KLM and <br />I aquifers. Figures B-16 and B-17 present the field conductivity <br />versus time plots for wells GF3 and GE4. Each plot shows no major <br />• trends in data to 1986 with a slight rise in values since 1986. <br />This slight rise is still within natural fluctuations. <br />The backfill aquifer in the Ashmore Pit area is monitored by <br />well GFS. Figure B-18 shows that conductivities for well GF5 have <br />been fairly stable since 1984. Well GF6 is completed in the Q <br />aquifer. Figure B-19 presents the conductivity versus time plot <br />for well GF6. A slight increase in conductivity seems to be <br />occurring but it is within the expected natural variations expected <br />for this aquifer. <br />Wells GF7 and GF11 are completed in the backfill material <br />where the HI and QR coalwere mined. Figures B-20 and B-21 <br />.. present field conductivity data versus time for each well. <br />• Recovery of water levels in the backfill material near well GF7 <br />has caused the rise in conductivity since the well was installed <br />3-4 <br />