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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 Vacuum* Sample Analyses m m3 <br /> scfm 1 I (acfin) lTem °F "WC ID GRO Benzene Toluene Eth ]benzene X lenes MTBE <br /> RO=Gasoline Range Organics(C4 C12) <br /> MTBF—Methyl tertiary butyl ether <br /> C=inches of water column <br /> gfm3=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(acfin)using the following formulas QA/QC Review <br /> Pressure corrected influent flow rate = Total influent air flow rate scfm*{(406 8 WC- WC)1406 8"WC) A=Data accepted without qualification <br /> Temperature Corrected influent flow rate = Pressure corrected flow rate " {(460 R+68deg Fy(deg F+460 R)) 3=Data accepted with qualification <br /> of Total=Total flow from Geld R=Data refected <br /> of Cat=Total field flow+Dilution Air <br /> '=Average vacuum <br /> 'Field data sheets record flow rate(inches of water column units)into the SVE system using a differential pressure guage and pitot tube <br /> These readings were converted to flowrate(acfm units)in 2-inch diameter pipe <br /> [I]Primary and confirmation results varied by greater than 40%Relative Percent Difference(RPD) <br /> [2]Reporting limits were raised due to high level ofanalyte 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 /> I <br /> ARCO-61 00 0 R M Page 2 of 2 57 kATf15 <br />