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fee <br /> J. H. KLEINFELDER & ASSOCIATES <br /> Ir". <br /> y 3.4 SITING OF EARLY WARNING/DETECTION WELLS) <br /> OBJECTIVE <br /> Site an early warning/detection well <br /> (s) which is both physically practical <br /> and hydraulically downgradient to the existing hydrocarbon plume. <br /> APPROACH <br /> An evaluation of existing information collected through Phase i and Phase <br /> 2 will be used to site the location for an early warning/detection well. <br /> Additionally, if it becomes necessary to utilize this well for ground <br /> water extraction (see Figure 3,4.1), modeling techniques will beincorporated so as to meet the objectives sited in Section 3.1. <br /> E ) Furthermore, a scaled survey map (as—built) with the location of utilities <br /> and other subsurface structures clearly marked will prove invaluable in <br /> assisting with this task. <br /> i l <br /> The Purpose of siting this early warning/detection monitoring well along <br /> the eastern wall of� the main buildingis to provide a means to assess the <br /> lateral extent of the hydrocarbon plume downgradient from the source. <br /> Data collected to date indicate the plume is traveling to the southeast: <br /> and extends beneath the main building. Since there is no monitoring well <br /> currently in place in this area, we have no means to detect the location <br /> of the leading edge of the hydrocarbon lame. Additionally,y P y, if the <br /> hydrocarbon plume has extended beyond the eastern wail of- the main <br /> building, locating a well in this area will facilitate quantification of <br /> contaminant concentrations in the ground water. <br /> r , <br /> 3.5 INSTALLATION OF EARLY WARNING/DETECTION WELL(S) <br /> im. <br /> OBJECTIVE <br /> The installation of a ground water monitoring well will provide for: <br /> o Further delineation of the hydrocarbon plume configuration and <br /> extent downgradient of the source <br /> 33-87-887 <br />