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obtained. Monitoring wells three, four and five were installed <br /> west of solar evaporation ponds one through four. These wells <br /> were installed to depths of 40 feet below ground surface and were <br /> perforated throughout their entire length (minus the surface <br /> seal) ; this well design and construction was intended to monitor <br /> for lateral migration of fluids in the shallow subsurface down- <br /> gradient from the evaporation ponds . The wells have always been <br /> dry. They continue to show no evidence of fluids hence, there is <br /> no indication of lateral migration of fluid wastes from ponds one <br /> through four. <br /> Monitoring wells seven, eight and nine were installed to <br /> shallowest ground water in the perimeter areas surrounding the <br /> Group 1 disposal trenches. These wells were intended to replace <br /> monitoring wells one, two and three when they went dry. The <br /> construction of monitoring wells seven, eight and nine were <br /> intended to monitor shallowest ground water which occurs at <br /> depths of approximately 100 feet below ground surface at the <br /> site. None of the deep monitoring wells have ever shown evidence <br /> of groundwater contamination. <br /> During fall of 1981, the farmer who farms the acreage adjacent <br /> to the site accidentally plowed under monitoring well eight. <br /> This monitoring well has not been relocated and as soon as site <br /> access makes it possible, monitoring well eight will be replaced. <br /> -10- <br />