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1 <br /> i 0 CALIFORNIA LABORATORY SERVICES <br /> ' 09/30/04 15:18 <br /> ENSR-Sacramento Project: Former Unocal 0187,437 ELS o',1"''64t rc#toeQ790 <br /> 10411 Old Placerville Rd.,Suite 210 Project Number: 06940-325-100 COC#:None <br /> ' Sacramento,CA 95827-2508 Project Manager: Ben Heningburg <br /> GasBTEX by GC PIDTID - Quality Control <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch CN07504- EPA 5030 Water GC <br /> ' Blank(CN07504-BLKI) Prepared&Analyzed: 09/27/04 <br /> Gasoline ND 50 pg/1. <br /> Benzene ND 0.50 <br /> Toluene ND 0.50 " <br /> ' Ethylbenzene ND 0.50 <br /> Xylenes(total) ND 1.0 <br /> Surrogate:o-Chloroioluene(BTEX) 20.0 20.0 100 65-135 <br /> Surrogate:o-Chloroioluene(Gas) 18.8 20.0 94.0 65-135 <br /> LCS(CN07504-BS1) Prepared&Analyzed: 09/27/04 <br /> 'woline 492 50 pg/L 500 98.4 65-135 <br /> ogate:o-Chlorololuene(Gas) 20.1 20.0 100 65-135 <br /> LCS Dup(CN07504-BSDI) Prepared&Analyzed: 09/27/04 <br /> Gasoline 473 50 pg/L 500 94.6 65-135 3.94 30 <br /> Surrogate:o-Chlorololuene(Gas) 20.6 " 20.0 103 65-135 <br /> Matrix Spike(CN07504-MSI) Source: CNI0716-03 Prepared&Analyzed: 09/27/04 <br /> Gasoline 464 50 pg/L 500 ND 92.8 65-135 <br /> Surrogate:o-Chlorotoluene(Gas) 19.7 " 20.0 98.5 65-135 <br /> Matrix Spike Dup(CN07504-MSD1) Source: CNIO716-03 Prepared&Analyzed: 09/27/04 <br /> Gasoline 445 50 pg/L 500 ND 89.0 65-135 4.18 30 <br /> Surrogate:o-Chlorololuene(Gas) 19.6 20.0 98.0 65-135 <br /> Batch CN07506- EPA 5030 Water GC <br /> Blank(CN07506-BLKI) Prepared&Analyzed: 09/27/04 <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 /> 1 <br /> CA DOHS ELAP Accreditation/Registration Number 1233 y, <br /> ' 3249 Fitzgerald Road Rancho Cordova, CA 95742 www.californialab-com 916-638-7301 Fax: 916-638-4510 <br />