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I ,iCALIFORNIA LABORATORY SERVICES <br /> 1 08/30/04 09:43 <br /> ENSR- Sacramento Project: Former Unocal 0187,437 East Wor&6r9erc#KA711 <br /> ' 10411 Old Placerville Rd., Suite 210 Project Number: 06940-325-100 COC#: I,2,3 <br /> Sacramento,CA 95827-2508 Project Manager: Sen I.Heningburg <br /> iGasBTEX by GC PID/FID - Quality Control <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Nates <br /> Batch CN06526-EPA 5030 Water GC <br /> 'Blank(CN06526-BLK1) Prepared& Analyzed: 08/23/04 <br /> Gasoline ND 50 pg/L <br /> Benzene ND 0.50 " <br /> 'Toluene ND 0.50 " <br /> Ethylbenzene ND 0.50 'I <br /> Xylenes(total) ND 1.0 <br /> Surrogate:o-Chlorololuene(BTEX) 19.7 20.0 98.5 65-135 <br /> ISurrogate:o-Chlorotoluene(Gas) 21.9 20.0 110 65-135 <br /> LCS(CN06526-BSI) Prepared& Analyzed: 08/23/04 <br /> C�ne 556 50 gg/L 500 111 65-135 <br /> ale:a-Chlorololuene(Gas) 22.7 20.0 114 65-135 <br /> LCS Dup(CN06526-BSD1) Prepared& Analyzed: 08/23/04 <br /> Gasoline 559 50 pg/L 500 112 65-135 0.538 30 <br /> Surrogate.,o-Chlorololuene(Gas) 22.3 1120.0 112 65-135 <br /> 'Matrix Spike(CN06526-MSI) Source: CNH0705-01 Prepared& Analyzed: 08/23/04 <br /> Gasoline 476 50 pg/L 500 ND 95.2 65-135 <br /> Surrogate:o-Chlorotoluene(Gas) 22.5 " 20.0 112 65-135 <br /> Matrix Spike Dup(CN06526-MSD1) Source: CNH0705-01 Prepared&Analyzed: 08/23/04 <br /> Gasoline 467 50 pg/L 500 ND 93.4 65-135 1.91 30 <br /> Surrogate:o-Chlorotoluene(Gas) 22.2 20.0 111 65-135 <br /> Batch CN06528-EPA 5030 Water GC <br /> Blank(CN06528-BLK1) Prepared&Analyzed: 08/23/04 <br /> 'Gasoline ND 50 pg/L <br /> Benzene ND 0.50 " <br /> Toluene ND 0.50 " <br /> Ethylbenzene ND 0.50 " <br /> ,Xylenes(total) ND 1.0 " <br /> CA DOHS FLAP Accreditation/Registration Number 1233 <br /> L249 Fitzgerald Road Rancho Cordova, CA 95742 www.californialab.com 916-638-7301 Fax: 916-638-4510 <br />