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' thickness of sand deposits (characterized by boring logs for monitoring wells <br /> MWM-12, -13, -14, -15, -17, -18, and -19). The reduction in sand deposits <br /> ' suggests a possible decrease in water transmitting properties in central <br /> Mossdale relative to the northwest and southeast Mossdale areas. <br /> At the MBR WWTP, the site appears to be underlain by a blue-gray silty clay <br /> 1 located from 24 to 30 feet below land surface. At one location (MBRMW-1), the <br /> clay appears to be more than 10 feet thick. Above the clay, the borehole logs <br /> ' report generally fine-grained deposits characterized as predominantly brown silty <br /> sands, sandy silts, and fine-grained sands. The depth to first encountered water <br /> ranged from 16 to 19 feet below land surface. <br /> 2.0 INSTALLED MONITORING WELL NETWORK <br /> ' During the period May 16, 2005 through July 1, 2005, 24 Phase 1 monitoring <br /> wells were installed in the Mossdale subarea. Figure 2 is a scaled site map <br /> ' showing all previously existing wells, newly installed wells, and other major <br /> physical and man-made features. Table 1 lists the Mossdale subarea wells <br /> plotted in Figure 2 and reports their current status. <br /> 1 <br /> 1 <br /> t <br /> t <br /> 1 <br />