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CALIFORNIA LABORATORY SERVICES <br /> g k 11/30/0413:17 <br /> ENSR-Sacramento Project: Former Unocal 0187,437 East Mork�rdeic#:t5fkA709 <br /> 10411 Old Placerville Rd.,Suite 210 Project Number: 06940-325-100 COC#: 1,2, 3 <br /> Sacramento,CA 95827-2508 Project Manager: Ben Heningburg <br /> GasBTEX by GC PID/FID - Quality Control <br /> 1 <br /> Reporting Spike Source %REC RPD <br /> ' Analyte Result Limit Chits Level Result %REC Limits RPD Limit Notes <br /> Batch CN09099- EPA 5030 Water GC <br /> ' LCS(CN09099-BSI) Prepared&Analyzed: 11/22/04 <br /> Gasoline 471 50 gg/L 500 94.2 65-135 <br /> Surrogate:o-Chlorotoluene (Gas) 19.8 20.0 99.0 65-135 <br /> ' LCS Dup(CN09099-BSD1) Prepared&Analyzed: 11/22/04 <br /> Gasoline 466 50 gg/L 500 93.2 65-135 1.07 30 <br /> Surrogate:o-Chlorotoluene(Gas) 20.0 20.0 100 65-135 <br /> Matrix Spike(CN09099-MS1) Source:CNK0709-31 Prepared&Analyzed: 11/22/04 <br /> Gasoline 623 50 gg/L 500 160 92.6 65-135 <br /> Sogate:o-Chlorotoluene(Gas) 19.3 20.0 96.5 65-135 <br /> Vrix Spike Dup(CN09099-MSD1) Source: CNK0709-31 Prepared&Analyzed: 11/22/04 <br /> Gasoline 625 50 gg/L 500 160 93.0 65-135 0,321 30 <br /> Surrogate:o-Chlorotoluene(Gas) 20.2 20.0 101 65-135 <br /> Batch CN09121 - EPA 5030 Water GC <br /> ' Blank(CN09121-BLK1) Prepared&Analyzed: 11/23/04 <br /> Gasoline ND 50 gg/L <br /> Benzene ND 0.50 <br /> Toluene ND 0.50 " <br /> ' Ethylbenzene ND 0.50 <br /> Xylenes(total) ND 1.0 <br /> Surrogate:o-Chlorotoluene(BTEX) 21.0 20.0 105 65-135 <br /> Surrogate:o-Chlorotoluene(Gas) 17.6 20.0 88.0 65-135 <br /> LCS(CN09121-BS1) Prepared&Analyzed: 11/23/04 <br /> Gasoline 462 50 gg1L 500 92,4 65-135 <br /> ' Surrogate:o-Chlorotoluene(Gas) 19.5 20.0 97.5 65-135 <br /> s <br /> E <br /> CA DOHS ELAP Accreditation/Registration Number 1233 <br /> 1 <br /> 3249 Fitzgerald Road Rancho Cordova, CA 95742 www.californialab.com 916-638-7301 Fax: 916-638-4510 <br />