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. Project Number SFB-175-0204 72 <br /> Consultant Project Number 16000-250-044 <br /> Contract Number N46CWCO244 9-X <br /> Facility Number Not Gwen <br /> Work Order Number C008790 <br /> Report Issue Date September 5, 1990 <br /> Table 3 <br /> INDEPENDENT OC CHECK SAMPLE RESULTS <br /> Purgeable Aromatics and Total Petroleum Hydrocarbons <br /> as Gasoline in Sol! <br /> EPA Method 8020/8015 <br /> I <br /> Date of Analysts 08/27/90 <br /> Expected Result, Observed Result, Acceptability <br /> Analyte ug/L. ug/L. Recovery, % Limits, % <br /> Benzene 50 55 11G 85-115 <br /> Toluene 50 52 104 85-115 <br /> Ethylbenzene 50 54 108 85-115 <br /> Xylene (total) 150 165 110 85-115 <br /> Table 3a <br /> INDEPENDENT OC CHECK SAMPLE SOURCE <br /> Purgeable Aromatics and Total Petroleum Hydrocarbons <br /> as Gasoline in Soil <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 /> GTEL Concord CA Page 5 of 7 <br /> C008790 DCC GTE <br /> L <br /> EPI V I RONM E^I SAI <br /> ® LABORATORIES INC <br />