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i <br /> Current Phase of Project Monitoring/Remediation <br /> Frequency of Groundwater Sampling All Monitoring Wells=Quarter) <br /> Frequency of Groundwater Monitoring _Quarterly <br /> Sampling Date June 18,2002 <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 38 18 to 40 27 ft bgs <br /> Groundwater Flow Direction East-Northeast <br /> Groundwater Gradient 0 0010 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 /> . <br /> Cone End of Period (lab) SVE system down since 11/24/97 <br /> Benzene Cone End of Period (lab) NA <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/propene) 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) Cone This Period SVE system dawn since 11/24/97 <br /> TPHG Cone Last Period NA <br /> Initial TPHG Cone 9,900 m /m3 November 9, 1994[following system u rade <br /> Benzene Cone This Period NA <br /> Benzene Cone Last Period NA <br /> Initial Benzene Concentration 290 mg/m3(November 9, 1994 [following system upgrade]) <br /> P 1Bp-Arco for URS121301Quarterly120021Arco_2130_2Q02 doc <br />