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APPENDIX A-6 <br /> HUMAN HEALTH SCREENING EVALUATION <br /> SURLAND HOMES PROPERTY <br /> TRACY,CALIFORNIA <br /> PROJECT 6447.007 <br /> FINAL <br /> CALCULATION OF SOIL SATURATION CONCENTRATIONS(Csat) <br /> Organic Carbon <br /> Partition Aqueous Henry's Law Soil-Organic Saturation Maximum Free <br /> Chemical Partition Concentration Concentration <br /> Coefficient Solubility tan[(H') <br /> (S) ConsPhase? <br /> (Kee) Coefficient(Kd) (CsaQ Soil(Cs) <br /> (V m (unitless) (U (mg/kg) m / ) <br /> Ethvibenzene 2.20E+02 1.61E+02 3.46E-01 4.40E+00 735 1.5 No <br /> Toluene 2.57E+02 5.35E+02 2.44E-01 5.14E+00 2,827 0.04 No <br /> Xylenes.Total 2.40E+02 2.00E+02 2.17E-01 4.80E+00 988 1 3.9 1 No <br /> Acenaphthene 4.60E+03 3.88E+00 4.92E02 9.20E+0I 357 0.63 No <br /> Chmsene 3.98E+05 1.60E-03 3.88E-03 7.96E+03 13 0.33 No <br /> Fluoranthene 1.07E+05 2.06E-01 6.60E-04 2.14E+03 441 0.018 No <br /> Fluorene 7.90E+03 1.90E+00 2.63E-03 1.58E+02 300 1.4 No <br /> Phenanthrene 2.72E+04 9.98E-01 1.60E-03 5.44E+02 543 2.8 No <br /> Pyrene 1.05E+05 1.35E-01 4.51E-04 2.10E+03 284 0.079 No <br /> Cra - (S)Pn)(KdPb+P,,. +(H'xPa)) <br /> Kd = K_ x f_ <br /> Parameter S mbol Value Units <br /> Fraction Organic Carbon foc 0.02 _unitless <br /> Bulk Density b 1.5 cm3 <br /> Water Filled Soil Porosity PW 0.15 unitless <br /> Air Filled Soil Porosity Pa 0.284 unitless <br /> i:\projecr\6000s\644T 7,00Mra sound done doc\pee ns for surland.As Pape 6 of 18 <br />