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CALIFORNIA LABORATORY SERVICES <br /> 03/08/04 12 43 ' <br /> ENSR-Sacramento Project Former Unocal 2859, 1665 CLcfW rvli d18ck1#nCNC0011 <br /> 10411 Old Placerville Rd,Suite 210 Project Number 06940-357-100 COC# 1,2,3 e <br /> Sacramento,CA 95827-2508 Project Manager Ben I Heningburg <br /> GasBTEX by GC PID/FID - Quality Control <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes , <br /> Batch CN01715- EPA 5030 Water GC <br /> Matrix Spike Dup(CN01715-MSD1) Source CNCOOI 1-01 Prepared&Analyzed 03/01/04 , <br /> Benzene 230 050 gg/L 200 ND 115 60-140 354 30 <br /> Toluene 225 050 200 ND 112 60-140 270 30 <br /> Ethylbenzene 21 2 0 50 200 ND 106 60-140 3 85 30 ' <br /> Xylenes(total) 625 10 " 600 ND 104 60-140 292 30 <br /> Surrogate o-Chlorotoluene(BTEX) 216 200 108 65-135 <br /> Surrogate o-Chlorotoluene(Gas) 204 200 102 65-135 <br /> Batch CN01716- EPA 5030 Water GC <br /> Blank(CN01716-BLKI) Prepared&Analyzed 03/01/04 <br /> Gasoline ND 50 pg& <br /> Benzene ND 0 50 " <br /> Toluene ND 0 50 " <br /> Ethylbenzene ND 050 <br /> Xylenes(total) ND to " <br /> Surrogate o-Chlorotoluene(Gas) 22-0 10 0 110 65-135 <br />_TLCS(CN01716-BSI) - Prepared&-Analyzed 03/01/04 - <br /> Gasoline 472 50 pg/L 500 94 4 65-135 <br /> Surrogate o-Chlorotoluene(Gas) 20 6 T T 200 l 103 65-135 <br /> LCS Dup(CN01716-BSDI) Prepared&Analyzed 03/01/04 <br /> Gasoline 478 50 pg/L 500 95 6 65-135 126 30 <br /> Surrogate o-Chlorotoluene(Gas) 212 11200 106 65-135 <br /> Matrix Spike(CN01716-MSI) Source CNCOOI I-16 Prepared&Analyzed 03/01/04 <br /> Gasoline 427 50 pg/L 500 ND 854 65-135 <br /> Surrogate o-Chlorotoluene(Gas) 195 200 975 65-135 , <br /> 1 <br /> CA OOHS ELAP Accred ltation/Registration Number 1233 <br /> 3249 Fitzgerald Road Rancho Cordova,CA 95742 www.callfornialab com 916-638-7301 Fax: 916-638-4510 ' <br />