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. Project Number SF8-175-0204 72 <br /> Consultant Project Number 16000.250-044 <br /> Contract Number N46CWCO244-9-X <br /> Facility Number 9-6155 <br /> Work Order Number C0098387 <br /> Report Issue Date September 20, 1990 <br /> Table 3 <br /> INDEPENDENT OC CHECK SAMPLE RESULTS <br /> Purgeable Aromatics and Total Petroleum Hydrocarbons <br /> as Gasoline In Sall <br /> EPA Method 8020/8015 <br /> Date of Analysis 09/14/90 <br /> Expected Result, Observed Result, Acceptability <br /> Analyte ug/L ug/L Recovery, % Llmrts, % <br /> Benzene 50 53 106 65-115 <br /> Toluene 50 47 94 85-115 <br /> Ethylbenzene 50 47 94 85-115 <br /> Xylene (total) 150 153 102 85-115 <br /> Table 3a <br /> INDEPENDENT QC CHECK SAMPLE SOURCE <br /> Purgeable Aromatics and Total Petroleum Hydrocarbons <br /> as Gasoline In Sod <br /> EPA Method 8020/8015 <br /> Analyte Lot Number Source <br /> Benzene LA18042 Supelco <br /> Toluene LA18042 Supelco <br /> Ethylbenzene LA18042 Supelco <br /> Xylene (total) LA18042 Supelco <br /> I <br /> I <br /> GTEL Concord CA Page 5 of 7 <br /> 0009387 DOC GTEL <br /> E"N V 1 R O N M E <br /> ® LABORATORIES INC <br />