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1y� <br /> EW <br /> C' <br /> A geologic cross section is graphically <br /> (Figure 9 ) . This cross section was basedrhis site <br /> onewell logs nted for tavailable <br /> 5 for the five monitoringwe <br /> lls installed is <br /> located on interbedded sands, silts, and bclays. Theyy GTI. Thesite are heter - <br /> geneous formations which are both laterally and vertically o <br /> discontinuous fluvial deposits. Permeability <br /> moderate in most areas. The principal aquifersnatethe asiteuarebe <br /> sand lenses with some silt and clay, and clay lenses with sand <br /> and silt. Each has a variable thickness. Maxim <br /> um <br /> the sand lens is 20 feet; the minimum thickness is lesskness than of <br /> foot. An average sand lens thickness is approximately 10 feet. <br /> The clay lens ranges in thickness from 25 feet to as 1 <br /> foot or less. Its little a <br /> average thickness is in the range of 15 tos20 <br /> feet. Hydraulic conductivities will range from 0.0002 m/day to <br /> as high as 12 m/day (Todd 1980 ). On average, the hydraulic <br /> ' conductivity will be closer to the lower y <br /> ?' end of the range of <br /> values, because the clay lenses are the dominant litholagy below <br /> n the water table. <br /> a <br /> s <br /> +tef r.,S j <br /> f� ,t <br /> f� <br />