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TAO 7 <br /> FLOW RATES AND ANALYTICAL RESULTS <br /> OF AIR SAMPLE ANALYSES-UNIT 2(SL NO 9230) <br /> ARCO Facility No 6100 <br /> 25775 South Patterson Pass Road <br /> Tracy,California <br /> Date Flowrate Influent Vacuum* Sample Analyse (m m} <br /> scfm t acfm Tem °F "WC ID GRO Benzene Toluene Eth lbenzene Xylenes MTBE <br /> 03/09/04 19800 16489 16000 9 00 6100 2 INF 3904 2,500 A 25111 1 33 A 2 6 A 16 A 35[1] J <br /> 6100 2 EFF 3904 <10 A <0 10 A <0 10 A <0 10 A <0 10 A <0 40 A <br /> 04/05/04 23300 21159 11000 800 6100T2INF-452004 3,200 A 56 A 39 A 21 A 31 A <0 50 A <br /> 6100C2INF-452004 2,300 A 40 A 26 A 15 A 22 A <0 50 A <br /> 61002EFF-452004 <50 A <0 50 A <0 50 A <0 50 A <10 A <0 50 A <br /> 05/03/04 28461 25272 12000 1000 6100INF2-5304 1,000 A 16 A 11 A 12 A 11 A <10 A <br /> 6100EFF2-5304 <500 A <5 0 A <5 0 A <5 0 A <10 A <5 0 A <br /> 06/07/04 11651 10339 11600 1300 6100T2INF672004 5,700[2] A 130[2] A 120[2] A 8 0[2] A 81[2] A <2 5[2] A <br /> 6100C2INF672004 2,800[2] A 66[2] A 63[2] A 4 4[2] A 34[2] A <2 5[2] A <br /> 61002EFF672004 <50 A <0 50 A <050 A <0 50 A <10 A <0 50 A <br /> RO=Gasoline Range Organics(C4-C12) <br /> MT1BF=Methyl tertiary butyl ether <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 /> Pressure corrected influent flow rate — Total influent air flow rate scfm*{(406 8 'WC-'WC)l406 8"WC) A Data accepted without qualification <br /> emperature Corrected influent flow rate = Pressure corrected flow rate *((460 R+68deg Fy(deg F+460 R)) 3=Data accepted with qualification <br /> *—Average vacuum R=Data rejected <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(acfrn units)in 2 inch diameter pipe <br /> [I I Primary and confirmation results vaned by greater than 40%Relative Percent Difference(RPD) <br /> [2]Reporting limits were raised due to high level of analyte present to the sample <br /> ARCO-6100-O&M Page I of I S1'KATU5 <br />