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C <br />Table SA <br />SUMMARY OF MULTIMED INPUT PARAMETERS AND RESULTS <br />DISPOSAL ALTERNATIVE 1 <br />Forward Landfill, San Joaquin County, California <br />PARAMETER <br />UNITS <br />AREA 1 <br />AREA 2 <br />AREA 3 <br />AREA 4 <br />BASIS <br />Fe <br />no units <br />1.09 _ <br />_1.09 <br />1.09 <br />1.09 <br />Based on Sharp -Hansen et al. (1990) Table 6_5 value for silty clay, <br />no units <br />2.68 <br />2.68 <br />2.68 <br />2.68 _ <br />Based on Sharp -Hansen et al. (1990) Table 6-5 value for sand <br />_ <br />- <br />_ <br />percent <br />0 <br />0 <br />0 <br />0 <br />Conservative assumption(does not allow model attenuation) <br />0 <br />0 <br />0 <br />percent <br />0 <br />Conservative assumption (does not allow model attenuation) <br />Layer 1 <br />g/cm3 <br />1.8 <br />1.8 <br />1.8 <br />1.8 <br />Site data (dry soil) <br />Layer 2 <br />g/cm3 <br />1.7 <br />1.7 <br />1.7 <br />1.7 <br />Medhan site data (dry soil) <br />Biological Decay Coefficient <br />- <br />-- - <br />Layer 1 _ <br />1/yr <br />_ 0 <br />0 _ <br />0 <br />0 _ <br />Conservative assumption (not significant for copper) <br />Lavery <br />1 r <br />0 <br />0 <br />0 <br />0 <br />Conservative assumption not significant for copper) <br />[Aquifer <br />Groundwater Transport Parameters <br />Thickness <br />in <br />12.2 <br />12.2 _ <br />12.2 <br />12.2 <br />Site data (Andrew Eng/Herst Revised EFS and Annual Corrective Action Reports) _ <br />0.35 <br />0.35 <br />Site data or estimate for uppermost saturated zone -_ <br />ctive Porosity <br />no units 0.35 0.35 <br />Density <br />g/cm31.7 <br />1.7 <br />1.7 <br />1.7 <br />Median site data (dry soil)ing <br />Zone Thickness <br />m <br />Derived <br />Derived <br />Derived <br />Derived <br />Derived by Modeln <br />[Bulk <br />Particle Diameter <br />cm <br />0.02 <br />0.02 <br />0.020 <br />02 <br />Average of site grain size dataraulic <br />Conductivity <br />m/yr <br />1.89E+03 <br />1 89E+03 <br />1.89E+03 <br />1.89E+03 <br />Based on Victor Formation slug tests (2E-02 to2E-03 cm/sec)dient <br />m/m <br />0.002 <br />0.002 <br />0.002 <br />0.002 <br />Median site data (see Figure 1)page <br />Velocity <br />m/yr <br />Derived <br />Derived <br />Derived <br />Derived <br />Calculated by Modelardation <br />Coefficient <br />no units <br />Derived <br />Derived <br />Derived <br />Derived <br />Derived by Model <br />in <br />Derived <br />Derived <br />Vertical Dispersivity <br />Derived <br />Derived <br />Derived by Model <br />Transverse Dispersivity <br />m <br />Derived <br />Derived <br />.Derived <br />Derived _ <br />Derived Model <br />Aquifer Temperature <br />°C <br />19 <br />19 <br />19 <br />19 <br />Average site monitoring data _ _ __ _ <br />pH <br />units <br />7.3 <br />7.3 <br />7.3 <br />7.3 <br />Median site monitoring data _ <br />Fraction Organic Carbon <br />no units <br />in <br />0 <br />213 <br />0 _ <br />165 <br />0 <br />332 <br />0 <br />205 <br />Conservative assumption (does not allow model attenuation) _ <br />Measure from center of assumed disposal area to closest downgradient monitoring well <br />Radial Distance to Well <br />ogle Off Gradient Axis <br />degrees <br />0 <br />0 <br />0 <br />0 <br />Assumed to be directly downgradient from the source <br />ell Screen De th Fraction <br />no units <br />0.23 <br />0.23 <br />0.50 <br />0.50 <br />Site -s -specific ratio of screen len h to depth of uppermost saturated zone <br />Results <br />Predicted Maximum Well Concentration <br />mg/L <br />1.77E-07 <br />5.60E-07 <br />4.08E-08 <br />8.21E-09 <br />Transient Dilution Attenuation Factor <br />no units <br />1.81E+08 <br />5.72E+07 <br />11,600 <br />7.73E+OS <br />20,600 <br />6.21E+09 <br />41,200 <br />Ra[io Initial Concentration:Detected Concentration <br />Time Required to Reach Maximum <br />yrs 22,000 <br />Typical Copper Detection Limit <br />_ <br />-. 0.0011 <br />..0.0011 <br />0.0011 <br />0.0011 <br />- _ <br />Detectable <br />__mg/L <br />no units <br />NO <br />NO <br />NO _ <br />NO <br />-. <br />Multiple Required for Detection <br />no units <br />6,211 <br />1,965 <br />26,981 <br />133,983 <br />