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iW E 6 <br /> FLOW RATES AND ANALYTICAL RESULTS <br /> OF AIR SAMPLE ANALYSES-UNIT I (SL NO )321) <br /> ARCO Facility No 6100 <br /> 25775 South Patterson Pass Road <br /> Tracy,California <br /> Date Plowrate Influent I Vacuum* Sample Analyses m ln3 <br /> scfm ' I factm)—lTemp °I "WC 1D GRO Benzene Toluene Eth ibenzene Xylenes M f13E <br /> GRO=Gasoline Range Organics(C4 C12) <br /> MTBE—Methyl terisary butyl ether <br /> WC=taches of water column <br /> mg/ml=milligrams per cubic meter <br /> Temp =Temperature in degree Fahrenheit <br /> Standard flow rate(scrim)measured using standard calibrated devices is converted to actual flow rate(acfm)using the following formulas QA/QC Review <br /> Pressure cormcled influent flow rate — Total influent air flow rate scfm*{(406 8"WC "WC)1406 8"WC) A Data necepted without qualification <br /> emperature Corrected influent flow rate = Pressure corrected now rate *((460 R+66deg F)1(deg F+460 R)) 1-Dat1 iccepted with qualification <br /> Inf Total=Total flow from field R—Data re3ei.ted <br /> Inf Cat—Total field flow+Dilution Air <br /> *=Average vacuum <br /> i Field data streets record flow rate(inches of water column units)into the SVE system using a differential pressure gnage and pitot lube <br /> These readings were converted to flowrate(acfm units)in 2 inch diameter pipe <br /> [1)Primary and confirmation results varied by greater than 40%Relative Percent Difference(RPD) <br /> [2]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 anal}tes were performed beyond the U S EPA recommended holding time <br /> ARCO 6100 0&M Page 2 of 2 OrRAWC7 <br />