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naturally observed concentrations and will probably be higher for <br />• several years before returning to pre-mine concentrations. Maior <br /> constituent concentration in water in this well may be starting to <br /> gradually decline. The water quality in QR wells GD2 and GF6 has <br /> not been affected by the upgradient mining. The conductivity <br /> concentrations for HR well GA1 also indicate that mining has not <br /> influenced water quality in this aquifer in this area. The last <br /> two years of conductivity values for well GE1 indicate an <br /> increasing trend has started. These increases are within natural <br /> variations and probably not caused by mining. Continued monitoring <br /> will define whether a long term trend has started. The remainder <br /> of the 9R wells are located east o£ present mining activities and <br /> could not have been affected. <br /> The water quality in the four HI aquifer wells, GB5, GE2, GF4 <br /> i <br />P <br /> ning. <br />and G <br />3 which are close to but have not been influenced by m <br /> The remainder of the HI wells east of the areas mined have not been <br /> affected. <br /> The conductivity plot at Third White Sandstone well GBZ have <br /> probably been affected by mining, but the change is within natural <br /> variations £or this aquifer. Mining could have caused <br /> concentrations to vary in Third White Sandstone well GE3 but the <br /> variations observed are also within natural variation. Third White <br /> Sandstone wells GC2 and GP9 are east of the mining and, therefore. <br /> observed changes in water quality in these wells has to be natural. <br /> Changes in Third White Sandstone well P8 are also thought to be <br />6-3 <br />