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CALIFORNIA ILABORA TORY SERVICES <br /> 04/09/03 14 16 <br /> SHAW,E&I Inc (Sacramento) Project Parkinson's Arco,Stockton CLS Work Order# CMD0112 <br /> 1326 North Market Blvd Project Number 8800401A/01060000 <br /> Sacramento CA,95834 Project Manager David Herzog COC# 206765 <br /> Gas/BTEX 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 CD30419-EPA 5030 Water GC <br /> Blank(CD30419-BLK1) Prepared 04/04/03 Analyzed 04/07/03 <br /> Gasoline ND 50 gg/L <br /> Benzene ND 050 " <br /> Toluene ND 050 <br /> Ethylbenzene ND 050 <br /> Xylenes(total) ND 1 0 " <br /> Surrogate o-Chlorotoluene(BTEX} 212 200 106 65-135 <br /> Surrogate o-Chlorotoluene(Gas) 199 200 995 65-135 <br /> LCS(CD30419-SSI) Prepared 04/04/03 Analyzed 04/07/03 <br /> Wonzene 21 7 050 pglL 200 108 70-140 <br /> luene 223 050 200 112 70-140 <br /> Ethylbenzene 225 050 200 112 70-140 <br /> Xylenes(total) 668 1 0 600 111 70-140 <br /> Surrogate o-Chlorotoluene(BTEX) 201 200 100 65-135 J <br /> LCS Dup(CD30419-BSD1) Prepared 04/04/03 Analyzed 04/07/03 <br /> Benzene 216 050 pg/l 200 108 70-140 0 462 30 <br /> Toluene 22 1 050 200 110 70-140 0 901 30 <br /> Ethylbenzene 223 050 200 112 70-140 0 893 30 <br /> Xylenes(total) 662 10 600 110 70-140 0 902 30 - <br /> Surrogate o-Chlorotoluene(BTEX) 201 200 100 65-135 <br /> Matrix Spike(CD30419-MS1) Source CMD0112-02 Prepared 04/04/03 Analyzed 04/07/03 <br /> Benzene 25 8 050 pg/L 200 34 112 60-140 — - <br /> Toluene 22 4 050 200 ND 112 60-140 <br /> Ethylbenzene 224 050 200 ND 112 60-140 <br /> Xylenes(total) 663 10 600 ND 110 60-140 <br /> Surrogate o-Chlorotoluene(BTEX) 204 200 102 65-135 <br /> CA DOHS ELAP Accreditation/Registration Number 1233 <br /> 3249 Fitzgerald Road Rancho Cordova, CA 95742 www callfornlalab com 916-638-7301 Fax 916-638-4510 <br />