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CALIFORNIA LABORATORY SERVICES ' <br /> 06/29/05 17 03 ' <br /> ENSR-Sacramento Project Stockton Scavenger Co CLS Work Order!# C6F0756 <br /> 10411 Old Placerville Rd,Suite 210 Project Number 05027-031-100 COC# <br /> Sacramento CA 95827-2508 Project Manager Eric Chase <br /> Gas/BTEX by GC PID/FID - Quality Control <br /> t _ r Reporting Spike- ,Source Y t '- %REC - RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes ' <br /> Batch C004824-EPA 5030 Water GC <br /> Blank(CO04824-BLKI) Prepared&Analyzed 06/22/05 ' <br /> Gasoline ND 50 pg/L <br /> Benzene ND 050 " <br /> Toluene ND 050 " <br /> Ethylbenzene ND 050 <br />-- Xylenes(total) ND a - 10 <br /> Surrogate o-Chlorotoluene(BTEX) 196 200 980 65-135 <br /> Surrogate o-Chlorotoluene(Gas) 196 l 200 980 65-135 ' <br /> LCS(CO04824-BSI) Prepared&Analyzed 06/22/05 <br /> Benzene 22 8 050 pg/L 200 114 70140" <br /> Toluene 21 9 050 200 110 70-140 <br /> Ethylbenzene w 220 050 200 110 70-'140 <br /> Xylenes(total) 695 10 600 114 70-140 <br /> Surrogate o-Chlorotoluene(BTEX) 186 200 930 65-135 <br /> LCS Dup(CO04824=BSDI)T- - - ` Prepared&Analyzed 06/22/05`" - - - <br /> Benzene 233 050 pg/L _ 200 116 70-140 2 17 30 <br /> Toluene W- 224_ 1 -� 050 - 200 112 70-140 226 30 ' <br /> Ethylbenzene 224 0 50 200 112 70-140 180 30 <br /> Xylenes(total) 696 10 600 116 70 140 1 59 30 <br /> Surrogate o-Chlorotoluene(BTEX) 185 200 92.5 65-135 ' <br /> Matrix Spike(CO04824-MS1) Source COF0707-04 Prepared&Analyzed 06/22/05 _ <br /> Benzene 260 050 pg/L 200 48 106 60-140 <br /> Toluene 279 050 200 6 7 106 60-140 ' <br /> Ethylbenzene 578 0 50 200 39 94 0 60-140 <br /> Xylenes(total) 127 10 600 82 750 60-140 <br /> Surrogate o-Chlorotoluene(BTEX) 176 200 880 65-135 ' <br /> CA DOHS ELAP Accreditation/Registration Number 1233 <br /> 3249 Fitzgerald Road Rancho Cordova, CA 95742 www.caltforntalab com 916-638-7301 Fax. 916-638-4510 <br />