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TABLE 4-3 <br /> DATA REQUIREMENTS FOR <br /> AT123D GROUNDWATER MODEL <br /> YELLOW FREIGHT, STOCKTON <br /> PARAMETER VALUE REFERENCE- <br /> Porosity 0.4 (unitless) Driscoll 1986 <br /> Hydraulic Conductivity '365 Driscoll 1986 <br /> (meter/year) <br /> Hydraulic Gradient ' 0.008 Site Measured Property <br /> Longitudinal Dispersivity 78 (meter) Fetter 1994 <br /> J <br /> Transverse Dispersivity 40 (meter) 'Fetter 1994 f <br /> Vertical Dispersivity '40 meter Fetter 1 4 <br /> (meter) 99 <br /> Bulk Density 1.5 g/cm3 Driscoll 1986 <br /> Fraction Organic Carbon 0.0001 Driscoll 1986 . ' <br /> Hydraulic gradient was determined_by the well depths measured on site. ; <br /> J <br /> S:\LDC\YELLo.RPT May 4,1995 <br /> i <br />