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CALIFORNIA LABORATORY SERVICES <br /> 1 11/04/04 12:48 <br /> ENSR-Sacramento Project: Former Unocal 0187,437 EVLVinrkv6-Aerck0&A882 <br /> 10411 Old Placerville Rd., Suite 210 Project Number: 06940-325-100 COC#:None 1]UU <br /> Sacramento,CA 95827-2508 Project Manager: Ben Heningburg <br /> GasBTEX by GC PID/FID - Quality Control <br /> Reporting Spike Source °/aREC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch CN08402-EPA 5030 Water GC <br /> 1 Blank(CN08402-BLK1) Prepared&Analyzed: 10/27/04 <br /> Gasoline ND 50 pg/L <br /> Benzene ND 0.50 <br /> Toluene ND 0.50 " <br /> 1 Ethylbenzene ND 0.50 <br /> Xylenes(total) ND 1.0 <br /> Surrogate:o-Chlorotoluene(BTEX) 20.0 20.0 100 65-135 <br /> Surrogate:o-Chlorotoluene(Gas) 20.5 20.0 102 65-135 <br /> LCS(CN08402-BSI) Prepared&Analyzed: 10/27/04 <br /> uAlbboline 466 50 µg/L 500 93.2 65-135 <br /> agate:o-Chlorotoluene(Gas) 20.9 20.0 104 65-135 <br /> LCS Dup(CN08402-BSDI) Prepared&Analyzed: 10/27/04 <br /> Gasoline 437 50 pg/L 500 87.4 65-135 6.42 30 <br /> Surrogate:o-Chlorololuene(Gas) 20.1 20.0 100 65-135 <br /> Matrix Spike(CN08402-MSI) Source: CNJ0882-08 Prepared&Analyzed: 10/27/04 <br /> ' Gasoline 479 50 pg/L 500 Nis 95.8 65-135 <br /> Surrogate:o-Chlorotoluene(Gas) 20.6 20.0 103 65-135 <br /> Matrix Spike Dup(CN08402-MSD1) Source: CNJ0882-08 Prepared&Analyzed: 10/27/04 <br /> Gasoiine 475 50 µg/L 500 ND 95.0 65-135 0.839 30 <br /> Surrogate:o-Chlorotoluene(Gas) 20.5 20.0 102 65-135 <br /> 1 <br /> • <br /> CA DOHS ELAP Accreditation/Registration Number 1233 <br /> ' 3249 Fitzgerald Road Rancho Cordova, CA 95742 www.californialab-com 916-638-7301 Fax: 916-638-4510 <br />