Laserfiche WebLink
I♦ m m1bm <br /> m <br /> 1310SCREEN Natural Attenuation Decision Support System ~ roc n! MTBE - Data Input Instructions: <br /> Air Force Center for Environmental Excellence Version 14 , 115 1 Enter value directly or <br /> Runame or 2 Calculate by frllinq in prey <br /> 1. HYDROGEOLOGY 6 GENERAL0 02 cells below (To restore <br /> Seepage Velocity' Vs 77 (ft/yr) Modeled Area Length* 1,500 (ft) t—L formulas, hit button below) <br /> or or Modeled Area Width* 70 (ft) W _ Variable* Data used directly in model <br /> Hydraulic Conductivity K 3 9E-04 (cm/sec) Simulation Time* 1 (yr) } m Value calculated by model <br /> Hydraulic Gradient 1 00054 (ft/ft) Don't enter any data) <br /> Porosity n 028 O 6 SOURCE DATA <br /> Source Thickness in Sat Zone* 20 (ft) Vertical Plane Source Look at Plume Cross-Section <br /> 2. DISPERSION Source Zones _ and Input Concentrations& Widths <br /> Longitudinal Dispersivdy* alpha x 122 (ft) Width* ft Conc m IL * for Zones 1, 2, and 3 <br /> Transverse Dispersivity* alpha y 12 (ft) 15 0 036 <br /> Vertical Dispersivity* alpha z 00 (ft) 10 036 <br /> or + or 20 365 ■ ■ <br /> Estimated Plume Length Lp 240 (ft) 10 036 <br /> 15 0.636 <br /> 3. ADSORPTION Source Hafflife see Help <br /> Retardation Factor* R 12 (-) (yr} View of Plume Looking Down <br /> or t or Inst React 1st Order <br /> Soil Bulk Density rho 17 (kg/!) Soluble Mass 1 0 500 (Kg) Observed Centerline Concentrations of Monitoring Wells <br /> Partition Coefficient Koc 1259 (L/kg) In Source NAPL,Soil If No Data Leave Blank or Enter"0" <br /> FractionOrganicCarbon foc 2 5E-3 (} 7. FIELD DATA FOR COMPARISON <br /> Concentration(mg/L) 3 65 005 <br /> 4. BIODEGRADATION Dist from Source (ft) 0 150 300 1 450 600 • 1 900 1 1050 1 1200 11350 1 1500 <br /> 1 st Order Decay Coeff* lembda 6 9E-2 (per yr) <br /> or or S CHOOSE TYPE OF OUTPUT TO SEE. <br /> Salute Half-Life t-half 10 00 (year) 5 Recalculate This <br /> or Instantaneous Reaction Model RUN RUN ARRAY Help 4 Sheet <br /> Delta oxygen* Do 165 (mgA) CENTERLINE <br /> Delta Nitrate* NO3 07 (mg/L) Paste Example Dataset <br /> Observed Ferrous Iron* Fe2f 166 (mg/L) VIeW OuE Vlew Out utDeEta Sulfate* 504 224 (mg/L) p Restore Formulas for Vs, <br /> Dispersivities, R, lambda, other <br /> Observed Methane* CH4 66 (mg/L) -> - <br />