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� ,HucK s Decat�,:r DOMENICO MODEL(STEADY STATE-IEPA 7AC0) <br /> 8-3(S ftj <br /> Calcuiation Results using TACO Equations S'17 and R26 for Contaminant Concentrations in Groundwater that have leached from soil <br /> General Parameters for R26 defauits <br /> Vert.source thickness,Sd: ?0 ft. 6.56 ft <br /> Horiz.Source Width,Sw(normal to flow): ��� ft. general gravel sand silt clay <br /> Saturated Porosity �.32 0.43 025 0.32 0.40 0.36 <br /> Hydr.Gradi G.05 gS <br /> Sat. Hydr. .,��E-_4 cm/s <br /> Spec. Disc 2.�6E-05 cm/s <br /> 5oil Bulk C � g/cm3 1.5 2.0 1.8 'I.6 1.7 <br /> GW Darcy 2'18E+02 cm/yr <3 ft bgs: >3 ft bgs: <br /> Fraction organic carbon,foc: Q.;u22 0.006 0.002 <br /> Leaching Factor(Soil to Groundwater) defaults: <br /> TACC Equation S'!7 <3 ft bgs >3 ft bgs gravel sand silt clay <br /> VVetted porosity 0.30 0.15 0.30 0.20 0.18 0.16 0 17 <br /> Air porosity 0.13 0.28 0.�3 0.05 0.'i4 0.�6 0.?% <br /> GW Mixing Zone Thickness,ft o.55 6.56 6.56 <br /> infil'ration Rate, cm/yr 30.00 30 30.000 <br /> Source Length parallel to flow, 2=G feet <br /> At source pt. benzene toluene ethylbenz xylenes �� MTBE �I � <br /> Soil conce�tration(mg/kg) �.� �,.g �,_ ,.,, <br /> Dilution!ac i 22 20 (TACO default) <br /> Dil Facto�? 20 <br /> Equilib to2al conc factor 3.85E-01 7.33E-01 1.24E+00 9.SOE-01 2.34E-0'1 <br /> Leaching Factor 7.69 14.66 24.89 18.99 4.69 <br /> Leached GW Conc.(mg/L) 0.117 0-123 0.100 0 068 0.000 <br /> Dist.X,boringlweil to Compliance Pt.: ;� ft. <br /> Class UClass II Groundwater. Class I <br /> Calculations based on equatfon R15/R26 in 35 IAC 742 A endix C,Tabie C. <br /> Chemical: Benzene Toluene Eth Ibenz X lenes MTBE <br /> Koc(mUg) 58.9 182 363 260 12 <br /> Decay Const. (/day)' 9.00E-04 1.10E-02 3.00E-03 1.90E-03 O.00E+00 <br /> Dim'less Henry's Law Const. 228E-0� 272E-01 323E-01 2.SOE-0� 2.4�E-02 <br /> Class! GW CUO(mg/L) 0.005 1.000 0700 10.000 0.070 <br /> C!ass il Gv1,'CUO(mg/L) 0.025 2.5 'i '10 0.07 <br /> Appropriate CUO(mg/�) 0.005 1.000 0.700 10.000 0.070 <br /> Estimated Concentration at x feet from borin /weli: II <br /> ILeached GW Conc(from above) 0.�'17 0.'123 0.100 0.068 0.000 <br /> Iexponentialfactor 0.120 0.000 0.004 0.020 1.000 <br /> SwJ(4 sqrt(alfa y'X)1 0.704 <br /> erf(Swl(4 sqrt(alfa y'X))) 0.68'i <br /> Shc;2 sqrt(alfa z`X)) 0.404 <br /> erf Sz 0.432 <br /> �Fract of Init Conc. {C/CO)@ X 3.5'185E-02 � '1.1698E-03 � 2.9426E-01 <br /> Estimated Conc.at Pt X O.00<; I 0 000 I 0 000 I 0 000 I 0 000 <br /> ,RATIO:Conc�Pt x/CorrActObj. 0.823 0.000 0.000 0.000 0.000 <br /> Effects of Similar-Acting Chemicals <br /> Hazard Index(HI) <br /> Total BTEX 0.823 <br /> Target Organ <br /> Kidney 0.000 <br /> Liver 0.000 <br /> Nervous System 0_000 <br /> Circulatory Syst. 0.823 <br /> G-I Tract 0.000 <br /> NOTE:The Hazard Indices(Hls)for Total BTEX and each of these organs must not exceed'I <br />