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CALIFORNIA LABORATORY SERVICES <br /> s <br />' 01/24/05 15 30 <br /> ENSR-Sacramento Project Former Unocal 5098,5606�Lc '*or'egrolerW"E6A0535 <br /> 10411 Old Placerville Rd,Suite 210 Project Number 06940-293-100 COC# 41188 <br /> Sacramento,CA 95827-2508 Project Manager Ben I Henmgburg <br /> TPH-Gasoline by GC FID - Quality Control <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch C000493-EPA 5030 Water GC <br /> Blank(CO00493-BLKI) Prepared 01/19/05 Analyzed 01/20/05 <br /> Gasoline ND 50 µg/L <br /> Surrogate o-Chlorotoluene(Gas) 188 200 940 65-135 <br /> LCS(C000493-BSI) Prepared 01/19/05 Analyzed 01/20/05 <br /> Gasoline 412 50 µg/L 500 824 65-135 <br /> Surrogate o-Chlorotoluene(Gas) 237 200 118 65-135 <br /> LCS Dup(C000493-BSD1) Prepared 01/19/05 Analyzed 01/20/05 <br /> Gasoline 491 50 µg/L 500 982 65-135 175 30 <br /> ogate o-Chlorotoluene as 203 200 102 65-135 <br /> rix Spike(C000493-MSI) Source COA0535-01 Prepared 01/19/05 Analyzed 01/20/05 <br /> Gasoline 627 50 µg/1. 500 240 774 68-132 <br />' Surrogate o-Chlorotoluene(Gas) 257 200 128 65-135 <br /> Matrix Spike Dup(C000493-MSDI) Source COA0535-01 Prepared 01/19/05 Analyzed 01/20/05 <br /> Gasoline 834 50 jig/L 500 240 119 68-132 283 32 <br /> Surrogate o-Chlorotoluene(Gas) 25 7 200 128 65-135 <br /> CA DOHS ELAP Accreditation/Registration Number 1233 <br /> 3249 Fitzgerald Road Rancho Cordova, CA 95742 www.californialab.com 916-638-7301 Fax. 916-638-4510 <br />