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■r r�r rr ■� rr rr � � ■�r. r� rr. ra r rr rr ri■r <br /> TABLES <br /> BIOPLUME 11 MODELING PARAMETERS AND RATIONALE <br /> Golden Grain Company <br /> Manteca, California <br /> „input Parameter Value Rationale <br /> um er o o serval on we s JA <br /> servation o nts at -1, -4, -7, -9, -13 <br /> Pum in eriod ears !04 <br /> imulated extent of dissolved benzene plume over 10 year period <br /> Effective oroslt , ne dimenslonless vera a ne based on lab measurements from site soil sam fes <br /> Longitudinal dlspersivity,dL (ft} ange of di 1 ft {for homogeneous aquifers}to 150 ft (for <br /> Ietero eneous a uifers EPFIi, 1991Stara a coefficientS dimensionless tead state simulation, S not required <br /> Ratio of transverse dispers.vlty,dT,to 0 atio range 0 05-0 20 (Freyberg, 1986) <br /> Ion itudinal dis erslvi ,dt dimensionless <br /> Ratio of transverse transmissivity to i 0 Monitoring data suggests relatively Isotropic soil conditions. <br /> Ion Itudinal transmissivit dimensionless <br /> Koc-benzene cm3 72 44 Fetter, 1993 <br /> Fraction organic carbon,foe {dimenslonless} 0 0004 e. g site based on samples lab measurements of total organic carbon <br /> from <br /> Bulk dens[ of solids, Bd k ms loV5 1608 <br /> Distribution coefficient, Kd M3/kg 00000, <br /> 9 Kd = (too) Koc ,value based on site data <br /> Retardation factor, Rt (dimensionless 1 12 Calculated from Bd, ne,and Kd supported b lab treatablli study <br /> Stoichiometric ratio of hydrocarbon to oxygen 3 <br /> 9- <br /> IS II default value, y ty <br /> for Instaneous reaction, F dimenslonless p 0 Conresuservatively Hand ass assumed ot, 1986) J <br /> reaeration to aquifer through recharge <br /> Reaeration coefficient, Kr da -1 <br /> ransmisstvi ,T ft2/Sec) 1 2E-02 T based on site pumping test <br /> uifer thickness, b ft 25 Avera a thickness of upper aquifer. <br /> H draulic conductivl , K ft sec 4 817-04 Based on site T value and a uifer thickness <br /> H draulic radiant, i ftft 0 OOi Based in Ma 1996 water levels. <br /> Water table elevation ft above MSL NA In ut values based on recent water levels <br /> Constant source concentration, Cs u I 780 Benzene source simulated at MW-7 <br /> Initial concentration of benzene (ug/l) NA Input values at each node, based on May 1996 concentrations with <br /> maximum Initial concentration of 780 u l <br /> Initial concentration of oxygen (ug/1) NA Input at each node, based on recent field measurements with <br /> maximum concentration of 4000 U%11 <br />