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it <br /> RESULTS OF VENT-ROI ANALYSIS <br /> EFFECTIVE RADIUS CALCULATION FOR CONVENTIONAL SOIL VAPOR EXTRACTION SYSTEM <br /> San Joaquin Catholic Cemetery site in Stockton, California <br /> , Fresh Gasoline (contaminant mixture' volatile and biodegradable) <br /> " loglo(MW P*) <br /> '-�- = 2. 45 - 3 .97 8m <br /> Temperature Constant <br /> -� = 1904 deg K <br /> Liquid Density = . 7 g/cc I <br /> Zero Order Bioremediation Rate Constant = 8. 6 ppm/day <br /> Initial Total Soil Contaminant Concentration = 12000 ppm <br /> Residual (Non-degradable) Soil Concentration = I ppm <br /> Vertical wells in 8 inch boreholes, extending to groundwater, <br /> screened from 10 to 30 feet <br /> Thickness of Vented Soil Interval = 20 feet <br /> Slope of 10910 (P) vs Distance from Pilot Test = . 015 per ft <br /> Soil Gas Temperature = 64 deg F <br /> N` Applied Vacuum = 82 in. water column <br /> w - Air Flow Rate per Vapor Extraction Well = 13. 6 scfm <br /> Desired Time to Cleanup = 365 days <br /> Cleanup Goal = 99 % removal <br /> VOLATILIZATION: SINGLE WELL EFFECTIVE RADIUS = 3 . 94 FEET <br /> INSUFFICIENT SURFACE INFILTRATION FOR MULTIPLE WELL SYSTEM <br /> BIODEGRADATION: SINGLE WELL RADIUS OF INFLUENCE = 20. 12 FEET <br /> INSUFFICIENT SURFACE INFILTRATION FOR MULTIPLE WELL SYSTEM <br /> VOL. PLUS BIO. : SINGLE WELL EFFECTIVE RADIUS = 11 . 46 FEET <br /> INSUFFICIENT SURFACE INFILTRATION FOR MULTIPLE WELL SYSTEM <br />