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CALIFORNIA LABORATORY SERVICES <br /> 02/28/05 15:48 <br /> GEOLOGICAL TECHNICS INC. Project: City of Escalon Former AM�I <br /> 1101 7th St. Project Number: T0607700842 C Work Order#: COB0692 <br /> MODESTO,CA 95354 Project Manager: Eric Price COC#:None <br /> GasBTEX by GC PID/FID-Quality Control <br /> Reporting Spike Source %REC RPD <br /> LAnalyte Result Limit Units Leel Result %REC Limits RPD Limit Notes <br /> Batch C001496-EPA 5030 Water GC <br /> Blank(CO01496-BLKI) Prepared&Analyzed:02/24/05 <br /> Gasoline ND 50 gg/L <br /> Benzene ND 0.50 <br /> Toluene ND 0.50 <br /> Ethylbenzene ND 0.50 " <br /> Xylenes(total) ND 1.0 <br /> Surrogate:o-Chlorotoluene(BTEX) 20.5 20.0 102 65-135 <br /> Surrogate:o-Chlorotoluene(Gas) 19.6 20.0 98.0 65-135 <br /> LLCS(CO01496-BSI) Prepared&Analyzed:02/24/05 <br /> Gasoline 472 50 µg/L 500 94.4 65-135 <br /> Surrogate:o-Chlorotoluene(Gas) 21.6 20.0 108 65-135 <br /> LCS Dup(C001496-BSD1) Prepared&Analyzed:02/24/05 <br /> Gasoline 513 50 Vg/l, 500 103 65-135 8.32 30 <br /> Surrogate:o-Chlorotoluene(Gas) 21.3 20.0 106 65-135 <br /> Matrix Spike(CO01496-MSI) Source: <br /> COB0765-01 Prepared&Analyzed:02/24/05 <br /> Gasoline 615 50 gg/L- 500 160 91.0 65-135 <br /> LSurrogate:o-Chlorotoluene(Gas) 21.0 20.0 105, 65-135 <br /> Matrix Spike Du <br /> P P(CO01496-MSDl <br /> ) Source:COB0765-01 Prepared&Analyzed:02/24/05 <br /> Gasoline 644 50 µg/L 500 . 160 96.8 65-135 4.61 30 <br /> Surrogate:o-Chlorotoluene(Gas) 21.1 20.0 106 65-135 <br /> L.� <br /> 1 r <br /> 3 iL <br /> L�������CA DOHS ELAP Accreditation/Registration Number 1233 <br /> 1 3249 Fitzgerald Road Rancho Cordova,CA 95742 www.californialab.com 916-638-7301 Fag:916-6384510 <br />