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. TA 6 <br /> FLOW RATES AND ANALYTICAL RESULTS <br /> OF AIR SAMPLE ANALYSES-UNIT 1 (SL NO 9321) <br /> ARCO Faclhty No 6100 <br /> 25775 South Patterson Pass Road <br /> Tracy,California <br /> Date FloNviate influent Vacuum* Sample Analyses(mg/m3) <br /> (ufm)tI (acfin) Temp (°F) ("QVC) 1D ORO Benzene Toluene E111y117en71t1C tylcnes MT13E <br /> GRO=Gasoline Range Oiganics(C4 C12) <br /> MTBE=Methyl ternary butyl ether <br /> C=itches of water column <br /> g/m3=milligrams per cubic meter <br /> Temp =Temperature m degree Fahrenheit <br /> Standard flow rate(scfm)measured using standard calibrated devices is converted to actual flow rate(actin)using the following formulas QAIQC 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)) J=Data accepted with qualification <br /> f Total=Total flow from field R=Data rejected <br /> f Cat=Total field flow+Dilution Air <br /> •=Average vacuum <br /> I Field data sheets record flaw rate(inches of water column,units)into the SVE system using a differential pressure guage and pitot tube <br /> These readings were converted to flowrnte(actin,units)in 2-mch diameter pipe <br /> 11 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 /> [31 Estimated value,less than reporting limits,but over the method detection limits <br /> [41 The reported results may be biased low since the analyses for these analytes were performed beyond the U S EPA recommended holding time <br /> ARCD 6iaa a&M Page 2 of 2 STRATUS <br />