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• Current Phase of Project Remediation <br /> Frequency of Groundwater Sampling Quarterly <br /> Frequency of Groundwater Monitoring Quarterly <br /> Sampling Date September 18, 1996 T <br /> Is Free Product (FP) Present On Site No <br /> FP Recovered this Quarter NIA <br /> Cumuiative FP Recovered to Date NIA <br /> Current Remediation Techniques SVE/Air Sparging <br /> Approximate Depth to Groundwater 50 43 to 52 73 <br /> Grouncxwater Flow Direction East to Northeast <br /> Groundwater Gradient 0 002 <br /> SVE QUARTERLY OPERATION AND PERFORMANCE <br /> Equipment Inventory Airex Katox Thermal Oxidizer(100-scfm) <br /> Operating Mode Catalytic <br /> SJVUAPCD Permit No N-3218-1-0 <br /> Total petroleum hydrocarbons <br /> (TPH) Conc End of Period (lab) 3,300 mg/m3 <br /> Benzene Conc End of Period (lab) <2 5 mg/m3 <br /> Flow Rate End of Period 36 cubic feet per minute <br /> Applied Vacuum This Period 44 inches of water <br /> HC Destroyed this Period(lab) 1150 pounds <br /> Utility Usage <br /> (electrical/gas/propane) 22,613 kilowatt hours <br /> Operating Hours This Period 2328 <br /> Percent Time Operational 100% <br /> Number of Auto Shutdowns 0 <br /> CURRENT SOURCE(BEFORE DILUTION) INFLUENT SUMMARY (LAB) <br /> Total petroleum hydrocarbons as <br /> gasoline (TPHG) Conc This 3,300 mg/m3 <br /> Period <br /> TPHG Conc Last Period 2,100 Mg/M3 <br /> Initial TPHG Conc 9,900 rn9/m3 (November 9, 1994[following system upgrade]) <br /> Benzene Conc This Period <2 5 mg/m3 <br /> . Benzene Conc Last Period 3 3 mg/m3 _ <br /> Initial Benzene Concentration 290 mg/m3(November 9, 1994[following system upgrade]) <br /> SACN\P1M805 08051140 6CS-96\c1b 1 <br /> y <br />