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• <br /> Current Phase of Project: Monitoring/Remediation <br /> Frequency of Groundwater Sampling: Wells MW-1 through MW-6= Quarterly-- <br /> Frequency <br /> uarterlyFrequency of Groundwater Monitoring: _ Quarterly <br /> Sampling Date: March 14,2001 <br /> Is Free Product(FP) Present on Site: Yes <br /> FP Recovered this Quarter: 4 gallons <br /> Cumulative FP Recovered to Date: 4 gallons <br /> Approximate Depth to Groundwater: 24.17 to 26.42 feet bgs <br /> Direction of Groundwater Flow: East <br /> Groundwater Gradient: 0.0021 ft/ft <br /> SVE QUARTERLY OPERATION AND PERFORMANCE: <br /> Equipment Inventory: King, Buck&Associates MMC-5A <br /> Catalytic Oxidizer(100-scfm) <br /> Ingersol Rand OL5 5HP Compressor <br /> Operating Mode: Catalytic <br /> SJVUAPCD Permit No.: N-4124 <br /> Total Petroleum Hydrocarbons (TPH) <br /> Cone. End of Period (lab): 1,770 m Im3 <br /> Benzene Cone. End of Period (lab): <2.5 mg/m3 <br /> Flow Rate End of Period: 30 cfm <br /> Applied Vacuum This Period: 26-22 inches water column <br /> HC Destroyed This Period (lab): 216 lbs as TPHG <br /> Utility Usage(electricallgaslpropane): 6,154 kilowatt hours <br /> Operating Hours This Period: 1,871 hours <br /> Percent Time Operational: 98% <br /> Number of Auto Shutdowns: 1 -due to power outage <br /> CURRENT SOURCE (BEFORE DILUTION) INFLUENT SUMMARY (LAB): <br /> Total Petroleum Hydrocarbons as <br /> Gasoline (TPHG) Cone.This Period: 1,238 mg/m3(average) <br /> TPHG Conc. Last Period: 6,463 mg/m3 averse <br /> Initial TPHG Conc.: 9,870 mglm3iNovember 28, 2000) <br /> Benzene Conc.This Period: 1.31 mg/m3(average) <br /> Benzene Conc. Last Period: 14.27 mg/m3(average) <br /> Initial Benzene Concentration: 60.1Mg/m3(September 28, 2000) <br /> C:1ARC0105481QTRLY1200110548 Q301,doc Delta <br /> 05/23/01 <br />