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� rl <br /> Current Remediation Techniques Air Bubblino <br /> Approximate Depth to Groundwater 34 5 to 36 53 ft bgs <br /> Groundwater Flow Direction East-Southeast <br /> Groundwater Gradient 0 0017 ft/ft <br /> SVE QUARTERLY OPERATION AND PERFORMANCE <br /> i <br /> Equipment Inventory Airex Katox Catalytic Oxidizer(100-scfm) <br /> Gast Air Compressor <br /> Operating Mode NA <br /> l SJVUAPCD Permit No NA <br /> Total Petroleum Hydrocarbons (TPH) <br /> II� Conc End of Period (lab) SVE system down since 11/24/97 <br /> Benzene Conc End of Period (lab) NA <br /> Flow Rate End of Period NA <br /> p Applied Vacuum This Period NA <br /> HC Destroyed This Period (lab) NA <br /> Utility Usage (electrical/gas/propane) NA <br /> Operating Hours This Period NA <br /> Percent Time Operational NA <br /> Number of Auto Shutdowns NA <br /> CURRENT SOURCE (BEFORE DILUTION) INFLUENT SUMMARY (LAB) <br /> Tota! Petroleum Hydrocarbons as <br /> Gasoline (TPHG)Conc This Period SVE system down since 11/24/97 <br /> TPHG Conc Last Period NA <br /> Initial TPHG Conc 9,900 m9/m3(November 9,_1994 jfo![owmg system upgrade]) <br /> Benzene Conc This Period NA <br /> Benzene Conc Last Period NA <br /> Initial Benzene Concentration 290 mg/m3 (November 9, 1994[following system upgrade]) <br /> i <br /> C 1ARC0121301QTRLY1200112130 Q101 doc Delta <br /> 5/10/01 <br />