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Current Phase of Project Monitoring/Remediation <br /> Frequency of Groundwater Sampling All Monitoring Wells= Quarterly <br /> Frequency of Groundwater Monitoring Quarterly <br /> Sampling Date September 12 2001 <br /> Is Free Product(FP) Present on Site No <br /> FP Recovered This Quarter NIA <br /> Cumulative FP Recovered to Date NIA <br /> Current Remediation Techniques Air Bubbling <br /> Approximate Depth to Groundwater 42 00 to 44 19 ft bgs <br /> Grosndr.ater Flow Direction East-Northeast <br /> Groundwater Gradient 0 0014 ft/ft <br /> SVE QUARTERLY OPERATION AND PERFORMANCE <br /> Equipment Inventory Airex Katox Catalytic Oxidizer(100-scfm) <br /> Gast Air Compressor <br /> Operating Mode NA <br /> SJVUAPCD Permit No NA <br /> Total Petroleum Hydrocarbons (TPH) <br /> Conc End of Period (lab) SVE system down since 11/24/97 <br /> Benzene Conc End of Period (lab) NA <br /> i <br /> Flow Rate End of Period NA <br /> 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 /> Total Petroleum Hydrocarbons as <br /> Gasoline (TPHG) Conc This Period _SVE system dawn since 11/24/97 <br /> TPHG Conc Last Period NA <br /> Initial TPHG Conc 9,900 Mg/M3(November 9 1994 (following system upgrade]) <br /> Benzene Conc This Period NA <br /> Benzene Conc Last Period NA <br /> Initial Benzene Concentration 290 m2lm3 LNovember 9, 1994 [following system upgrade)) <br /> P 1ARCO\21301QTRLY120071Arco_2l 30}QO1 doc Delta <br /> 11/12/01 <br />