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therefore, observed changes in water quality in these wells has to • <br />be natural. Changes in 3rd White Sandstone cell P8 are also <br />thought to be natural because upgradient mining has occurred only <br />during the last couple o£ years and observed variations are within <br />pre-mining limits. <br />Significant changes in conductivity concentrations have been <br />observed in the alluvial wells GC3, P1, J1, and Coy. The changes <br />in the Flume alluvial wells has to be natural, while some of the <br />changes in J1 water could be due to mining. The conductivity for <br />J1 increased during 1993. The changes in Pyeatt alluvial well P1 <br />are thought to be natural because they are similar to those <br />observed prior to mining in this drainage. <br />The pH values for all of the Trapper wells are within the • <br />range of natural values for these aquifers. The pH values for the <br />four backfill wells are within the range observed in the other <br />aquifers. <br />6.2 SQRFACB WATHR <br />The average flows for the surface water sites at Trapper Mine <br />were up in 1993 compared to average flows observed in 1992. <br />Overall precipitation also increased in 1993. No failures or <br />monitoring site problems were encountered during 1993. <br />Total suspended solids (TSS) were generally following a direct <br />relationship with flow rate during 1993. Total dissolved solids <br />(TDS) were generally in an indirect relationship with flow rate. <br />Other chemical constituents analyzed from samples collected from • <br />6-4 <br />