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r <br /> 41 <br /> redeveloped so that it ca' be pumped using a 1 1/2" diameter hose <br /> with a perforated base, inserted fro .the surface. We will <br /> I� <br /> electronically monitor we,1l MW-1 and plot drawdown vs. time. If <br /> a break in slope is observed, a barrier between zones 3 and 5 <br /> exists. If no break in slope is obs rved, the existence of a <br /> paleochannel connecting zones 3 and is confirmed. <br /> The second aquifer test will be an injection/recovery test of the <br /> water table aquifer. At most times that aquifer does not <br /> contain enough water for standard p p tests. If a barrier <br /> r <br /> between zones 3 and 5 is confirmed by the first test, the aquifer <br /> test can be conducted using wells MW 10 and MW-19 . For that test <br /> we would need to insert a:' 5-10 cm. p ' ezometer midway between the <br /> two wells. If no barrier exist between local zones 3 and 5 at <br /> the SW corner of the site;, the test of the water table aquifer <br /> will be moved toward the iW corner oE the site near well MW-14 . <br /> :x <br /> The test would also be injection/rec very, but details of <br /> �s <br /> location etc. would depend on the geological conditions <br /> ji <br /> encountered in proposed monitoring well 23P. <br /> lo. Sequence of Operations. Some off these operations, such as A <br /> and B, can progress simultaneously. <br /> A. Routine monitoring. <br /> B. Obtain permits. <br />€ C. Revise and resubmit Site Characterization and Remediation <br /> Plan reports (Du Pont's responsibility) . <br /> { D. Plug and abandon RW-1�. <br /> .F <br /> E. Install pumping system in MW-19. <br /> 6 <br /> !J <br />