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BIOSCREEN Natural Attenuation Decision Support System Joe's Truck Plaza Data Input Instructions: <br /> Air Force Center for Environmental Excellence Version 1.4 B-zone calibration 15 1. Enter value directly....or <br /> Run Name T or 2. Calculate by filling in grey <br /> 1. HYDROGEOLOGY 5. GENERALL 0.02Cells below. (TO restore <br /> Seepage Velocity* Vs 21.6 (ft/yr) Modeled Area Length* 420 (ft) t —� formulas, hit button below, <br /> or or Modeled Area Width* 250 (ft) W NNW -.-Variable* <br /> Data used directly in model <br /> Hydraulic Conductivity K 1.3E-02 (cm/sec) Simulation Time* 9 (yr) l m value Calculated by model. <br /> Hydraulic Gradient i 0.0005 (ftlft) (Don't enter any data). <br /> Porosity n 0.3 (-) 6. SOURCE DATA <br /> Source Thickness inSat.Zone* 15 (ft) vertical Plane Source: LookatPlume Cross- <br /> 2. DISPERSION Source Zones Sectlon and InputCOncentrat%Ons& Wldths <br /> Longitudinal Dispersivity* alpha x 13.8 (ft) Width* ft Conc. m /L * for Zones 1, 2, and 3 <br /> Transverse Dispersivity* alpha y 1.4 (ft) 50 0 <br /> Vertical Dispersivity* alpha z 0.1 (ft) 25 0.0005 <br /> or or 100 2.8 <br /> Estimated Plume Length Lp 300 (ft) I fit <br /> 3. ADSORPTION Source Halflife(see Help): <br /> Retardation Factor* R 2.0 (-) (yr) View of Plume Looking Down <br /> or or Inst.React. 1St Order <br /> Soil Bulk Density rho 1.7 (kg/1) Soluble Mass 0.40 (Kg) Observed Centerline Concentrations at monitoring Wells <br /> Partition Coefficient Koc 11.2 (Ukg) In Source NAPL,Soil if No Data Leave Blank or Enter"0" <br /> FractionOrganicCarbon foc 1.6E-2 (-) 7. FIELD DATA FOR COMPARISON <br /> Concentration(mg/L) 064 .12 <br /> 4. BIODEGRADATION Dist.from Source (ft) r 42 1 84 J 1261 .: 1 210 1 252 1 294 1 336 1 378 1 420 <br /> 1 st Order Decay Coeff' lambda 32E-1 (per yr) <br /> or or 8. CHOOSE TYPE OF OUTPUT TO SEE: <br /> Solute Haff-Life t-half 2.20 (year) L/e' Recalculate ThiJR or Instantaneous Reaction Model RUN RUN ARRAY Help p Sheet <br /> Delta Oxygen* DO (M910 CENTERLINE <br /> Delta Nitrate* NO3 (mg/L) Paste Example Dataset <br /> Observed Ferrous Iron* Fe2+ (mg/L) View Output View Output <br /> Delta Suffate* SO4 (mg/L) PRestore Formulas for Vs, Dispersivities, <br /> lambda, other <br /> Observed Methane* CH4 (mg/L) <br />