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TAG 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,Cahfornla <br /> Date Flowrate Influent Sample Analyse m3 <br /> scfm t acfm Te °F ID ORO Benzene Toluene Eth (benzene xylenes I MTBE <br /> 10/06/04 235 55 21443 120 6100TINF2 4,700 A 110 A 120 A 11 A 71 A <0 50 A <br /> 6100CINF2 1,600 A 41 A 39 A 3 6 A 21 A <0 50 A <br /> 6100EFF210604 57 A <0 50 A <0 50 A <0 50 A <0 50 A <0 50 A <br /> 10/14/04 28266 24669 145 6100INF2101404 2,000[2,5] A 44[2,5] A 48[2,5] A 5 8[2,5] A 30[2,5] A <2 5[2,5] A <br /> 6100EFF2101404 <50[4] A <0 50[4] A <0 50[4] A <0 50[4] A <1 0[4] A <0 50[4] A <br /> 11/04/04 21715 20293 105 6100AINF-110404 3,200 A 110 A 94 A 63 A 34 A <0 50 A <br /> 6100ASYSINF-110404 1,000 A 34 A 30 A 23 A 12 A <0 50 A <br /> 6100AEFF-110404 160 A 43 A <0 50 A <0 12 A <0 12 A <0 14 A <br /> 11/11/04 12366 11219 122 6100CINF2111104 2,200 A 38 A 33 A <5 0 A 95 A <5 0 A <br /> 6100EFF2111104 <50 A <0 50 A <0 50 A <0 50 A <0 50 A <0 50 A <br /> RO=Gasoline Range Organics(C4-C12) <br /> TBE=Methyl tertiary butyl ether <br /> C=inches of water column <br /> mglm'=milligrams per cubic meter <br /> emp =Temperature in degree Fahrenheit <br /> Standard flow rate(sefm)measured using standard calibrated devices is converted to actual flow tate(acf n)using the following formulas QA/QC Review <br /> ressure corrected influent flow rate Total influent air flow rate sift* ((406 8"WC-"WCY406 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)] J=Data accepted with qualification <br /> *=Average vacuum R=Data rejected <br /> 1 Field data sheets record flow rate(inches of water column,units)into the SV)?system using a differential pressure gaage and phot tube <br /> These readings were converted to flowrate(acf n,units)in 2-mch diameter pipe <br /> [1]Primary and confirmatnm results vaned by greater than 40%Relative Percent Difference(RPD) <br /> [2]Reporting hmds were raised due to high level of analyte present in the sample <br /> 31 The reported result for GRO is due to chromatographic pear present in the gasoline quantitation range,however,the peaks present do not resemble the pattern for gasoline <br /> 4]Extracted out of holding tame <br /> 5]The elevated reporting limits were the result of dilutions performed by the laboratory m order to quantitate a target analyte <br /> ARCo_6100_O&M Page 2 of 2 S TR4 TUS <br />