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,Mer.ila and Associates <br />STS Project 93492 <br />_ December 19, 1984 <br />-6- <br />USGS. Due to the relatively impervious nature of the cohesive soils <br />encountered on this site, it is likely that the water encountered here <br />is the result of a perched ground water condition. In impervious soils <br />such as these, a rapidtaccurate determination of the ground water <br />elevation is not possible due to the long period of time required for <br />` the water level to reach a stabilized position. Perched ground water <br />conditions may exist at various elevations and locations within the <br />development area. Fluctuations in the level of the perched ground <br />water conditions can be expected, depending upon local amounts of <br />precipitation, evaporation, surface runoff and infiltration. <br />W. <br />