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F - ATTACHMENT A <br /> REMEDIAL ACTION PERFORMANCE SUMMARY: FOURTH QUARTER 2003 <br /> Ozone Sparge System <br /> Site Name: ConocoPhiliips Station#11195 Start-Up Date:Dec 2002 <br /> Site Address: 16500 Harlan Rd.Lathrop Estimated Shutdown Date: NA <br /> REMEDIAL OBJECTIVES <br /> OPERATIONAL DATA(f=ourth Quarter 2003) <br /> Ozone Sparge Treatment System Data October November December <br /> Operational Status Operational Nan-Operational Non-Operational Cumulative <br /> Mass Ozone Injected(lbs) 0.00 <br /> TPHg, Benzene and MtBE Summary October November December <br /> MW 1 Concentration TPHg(Ng/L) <5000 - -- <br /> Concentration Benzene(pg/L) <50 -- <br /> Concentration MtBE(NgIL) 6700 -- -- <br /> MW3 Concentration TPHg(pg/L) <50 -- — <br /> Concentration Benzene(pg/L) <0.5 -- -- <br /> Concentration MtBE(pg/L) ji 0.6 -- — <br /> REMEDIAL ACTION PERFORMANCE EVALUATION <br /> ACTIONS/RECOMMENDATIONS <br /> o Continue operation of the ozone sparge system <br /> OTES: <br /> ppmv =Parts per million by volume <br /> cfm =Cubic feet per minute <br /> lbs =Pounds <br /> SVE =Soil Vapor extraction <br /> ND =Not detected above the detection limit <br /> TPHg =Total petroleum hydrocarbons as gasoline <br /> MtBE =Methyl tert-butyl ether <br /> - =Not available <br /> Note: When appropriate.tabulated data is followed by graphical presentation. <br />