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I <br /> AE 6 <br /> FLOW RATES AND ANALYTICAL RESULTS <br /> OF AIR SAMPLE ANALYSES-UNIT 1 (SL NO 9321) <br /> ARCO Facility No 6100 <br /> 25775 South Patterson Pass Road <br /> Tracy,California <br /> Date Flowrate Influent I Vacuum* Sample Analyses(mg/m3} <br /> scfm i acfm Tem o "WC ID GRO Benzene Toluene Ethlbenzene Xylenes MTBE <br /> RO=Gasoline Range Organics(C4-C12) <br /> E=Methyl tertiary butyl ether j <br /> C=inches of water column <br /> mg/m3=milligrams per cubic meter <br /> Temp =Temperature in degree Fahrenheit <br /> Standard flow rate(scfm)measured using standard calibrated devices is converted to actual flow rate(acfm)using the following formulas QA/QC Review <br /> remure corrected influent flow rate — Total influent air flow rate scfm*{(406 8"WC "WCu406 8"WC) A=Data accepted without qualification <br /> Temperature Corrected influent flow rate = Pressure corrected flow rate *{(460 R+68deg F)1(deg F+460 R)) J=Data accepted with qualification <br /> liar Total=Total flow from field R=Data rejected <br /> of Cat=Total field flow+Dilution Air <br /> `=Average vacuum <br /> i Field data sheets record flow rate(inches of water column units)into the SVE system using a differential pressure gunge and pitot tube <br /> These readings were converted to flowrate(acfm units)in 2 inch diameter pipe <br /> [1]Primary and confirmation results vaned by greater than 40%Relative Percent Difference(RPD) <br /> [21 Reporting limits were raised due to high level of analyte present in the sample <br /> [3]Estimated value less than reporting limits,but over the method detection limits <br /> [4]The reported results may be biased low since the analyses for these analytes were performed beyond the U S EPA recommended holding time <br /> ARCO-6100-O&M Page 2 of 2 STRATUS <br />