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Soil Investigation and Background Groundwater Monitorinftell Installation Workplan <br /> January 17,2007 <br /> CAMBRIA <br /> level will be allowed to equilibrate and the slug will then be quickly removed, thus effecting the <br /> removal of a volume of water equal to the volume of the slug.To record the rate of rise of the water <br /> level, a water level transducer and data recorder will be used. The data logger will record the <br /> recovery of the well by recording the head of water, as measured by the transducer, at preset <br /> increments of time until the water level in the well has recovered to or near its static water level. <br /> Short time increments are used at the beginning of the test when recovery is quick,and longer time <br /> increments of time are used toward the end of the test when recovery is slower.Once the slug test has <br /> been performed and the data collected, there are several different methods which can be used to <br /> estimate the value of hydraulic conductivity.The appropriate method depends on the characteristics <br /> of the aquifer in which the slug test was performed. Some of the characteristics which should be <br /> ® examined are whether the aquifer is confined, semi-confined, or unconfined, and whether the well <br /> tested is fully or partially penetrating the aquifer.We will determine the appropriate method once the <br /> aquifer's characteristics are identified. <br /> Soil and Water Disposal: Soil cuttings generated during drilling activities will be spread on the <br /> ground around the boring locations or stockpiled on the ground in the location of the proposed <br /> infiltration/evaporation pond. Displaced groundwater and rinsate generated during drilling will be <br /> disposed of on the ground surface away from the wells. <br /> Reporting: After the drilling activities are completed,a report will be prepared and will include the <br /> following: <br /> • A summary of the site background and history; <br /> • Descriptions of the drilling,well installation,well development,and groundwater sampling <br /> activities; <br /> • Lithologic logs with well construction details; <br /> • A site map showing the boring locations; <br /> • Tabulated analytical results; <br /> • Groundwater elevation maps; <br /> • Analytical reports and chain-of-custody documentation; <br /> • Land surveying data; <br /> • Waste management/disposal methods; <br /> • An evaluation of slug test results; and <br /> • Conclusions and recommendations. <br /> 7 <br />