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{ <br /> 1� <br /> are graphically depicted on the Product Thickness Graphs (Append-- <br /> ix V). <br /> A review of the hydrographs and accumulated groundwater <br /> monitoring data provides the following trends and observations s <br /> - - The monitoring wells 1, 3 and 4 have exhibited free product <br /> accumulations over the past four months. The greatest apparent <br /> product thickness was measured at 4.55 feet in well 4 on August <br /> 25, 1986. The large free product accumulation in this well is <br /> likely due to the water table depression created by pumping in <br /> this well. <br /> Groundwater table elevations have dropped about 3 feet <br /> �x* during the past 3 months. The drop has been at a consistent rate <br /> of approximately 1.4 feet per month in all the wells. The <br /> consistent rate of decline between the wells suggests that the <br /> entire upper water bearing interval is being dewatered. <br /> Free product thickness has increased with the lowering of <br /> f.x the water table over the past 3 months, however, it is difficult <br /> to determine whether the depression (ie product accumulation) is <br /> :•i solely attributed to pumping within monitoring well 4. <br /> l„ <br /> The geologic cross-section A-A' shows that the water table <br /> elevation decline has shifted the water table surface from a <br /> E <br /> predominantly sandy soil type in May, 1986, down into a clayey <br /> soil type in August, 1986. <br /> f a <br /> I <br /> - The groundwater gradient snap indicates the groundwater flow <br /> direction to be southeast to easterly at the study site. <br /> GROTAYDWATER Sh"LING AM ANALYSIS <br /> In order to define the distribution of dissolved hydrocarbon <br /> 18 • <br />