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TABLE 3-2 <br /> CHEMICAL SPECIFIC INPUT PARAMETERS <br /> CALTRANS SHOP 10 STOCKTON CALIFORNIA <br /> 1Parameter units Benzene Eth lbenzene 'Toluene % lenes MTBE <br /> Diffusion Coefficient m Air' cm/sec 0 088 0 075 0 078 000 73 7 92E-23 <br /> Diffusion Coefficient in Water' cm%ec 1 10E-05 8 50E-06 9 40E-06 8 50E-06 9 41E-53 <br /> Henry's Constant' atm-m3lmol 5 50E-03 7 90E-03 6 60E-03 5 30E-03 5 77E-04 <br /> 2maruc Carbon Partition Coefficient 2 ca/9 83 1100 300 240 NA <br /> 1 From EPA Region IX PRGs 1998 <br /> 2 From EPA Superfimd Public Heatlh Evaluation Manual 1986 <br /> 3 Reported in GSI ASTM RBCA software 1997 <br /> NA not available at flus time will be reported before the modeling begins,expected to be low near 1 <br /> • <br /> Page 1 <br />