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• The down-gradient wells were recompleted in August and water <br />quality sampler installed in August-September, 1990. Initial <br />water quality results indicate a mixture of water across all four <br />aquifers which does not compare to other monitoring sites. This <br />location, the maxi-pad, had an open hole and wells which may have <br />comingled aquifers for up to ten years. Also, recompletion effects <br />may be noted. After a period of time, the aquifer data is <br />expected to reflect characteristics of aquifers at other <br />monitoring locations. Field water quality analysis indicated <br /><1,000 conductivity for Perched and >20,000 conductivity for <br />Dissolution Surface aquifers during recompletion, and that was how <br />final sampling depth was selected. Table 2-7 summarizes water <br />quality data after completion. <br />Potentiometric Levels <br />Data illustrated on Figures 2-6 through 2-8 show potentiometric <br />levels for the set of wells immediately down-gradient of planned <br />well field at EX-2 well site. Wells up-gradient and down-gradient <br />(at maxi-pad) have not been in place long enough for extensive <br />data evaluation. It is interesting to compare lower aquifer <br />potentiometric levels from north to south across the lease. <br />Figure 2-9 illustrates data from mid-summer, 1990 which indicates <br />little if any trend in potentiometric levels from north to south. <br />Figure 2-10 illustrates potentiometric levels of wells included in <br />• NaTec's primary monitoring system. Figure 2-10 indicates little <br />potentiometric d~rence across the lease, but after pumpage, a <br />46 <br />