Laserfiche WebLink
probably due to a bad reading. The conductivity versus time plot <br />for well GA2 exhibited a declining trend from 1481 to 1485 then <br />exhibited a small increasing trend the last three years. The <br />March 1988 value is an outlier probably affected by field <br />measurement accuracy. The conductivity plots are similar to the <br />TDS trend plots for these wells with more variations in the <br />conductivity plots. <br />The GB well site employs wells GB2 and GBS to monitor the <br />Third White Sandstone and the HI aquifers. Conductivities <br />presented on Figure B-41 present a fairly steady plot of <br />conductivity with three outliers. Figure B-42 presents the <br />conductivity versus time plot for well GBS. Overall, the plot <br />presents decreased values the past few years than data from 1981 <br />• to 1984. Conductivities for the well GBS during the last four <br />years have remained fairly stable although approximately 200 <br />micromhos lower than earlier data. Changes in the Third White <br />Sandstone aquifer at this well are thought to 6e within the range <br />of natural fluctuation. These changes in conductivity in water <br />from well GB5 are probably natural but could have been influenced <br />some by the adjacent mining. Conductivity and TDS data have <br />varied similarly in these two wells. <br />Well GCI monitors the H aquifer at the GC site on the far <br />east side of the Trapper Mine permit area at least two and one- <br />half miles from the active mining. Figure B-43 presents the <br />conductivity data for well GC1. Some variation is present <br />throughout the plot. Concentrations have risen slightly in the <br />last few years. Well GC2 is completed in the Third White <br />3-10 <br />