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113/28/213134 113:21 y1 bb38451 b CLS LABS PAGE 24 <br /> CALIFORNIA LABORATORY SERVICES <br /> 10/28/04 10:19 <br /> CH2M Hili Project PG&E-Lathrop CLS Work Order#:CNB0505 <br /> 155 Grand Avc-;Suite 1000 Project Number: 283984.01.CM <br /> Oakland CA,94612 Project Manager. Bob Noyes COC 4:47344 <br /> Gas1BTEX.by GC PID/FID-Quality Control <br /> Reporting Spike Sour= %PEC RPD <br /> Analyte Result Limit Units Level Result %RPC Limits PPD Limit Notes <br /> Batch CN01253 -EPA 5030 Soil GC <br /> Blank(CN01253-B1LK1) Prepared&Analyzed:02/13/04 <br /> Gasoline ---- – ND 1000 µRfkB <br /> Bonzcnc ND 5.0 " <br /> Toluene Nb 5.0 " <br /> Ethylbenzene ND 3.0 " <br /> Xylcncs(total) ND 10 " <br /> •Surrnpafe:o-Chlor•ofnlife,.nr.(Gas) 107 100 107 10-130 <br /> LCS(CN01253-BSI) Prepared&Annlyzed:02/13/04 _ - <br /> - ---.—... - ----— -- -- — —- <br /> Gasoline 2190 1000 µg/kg 2500 87.6 GS-135 <br /> Sarrngafe:0-Chlorololuene(00101 100 101 70-130 <br /> LCS Dup(CN01 253-BSD 1) Prepared&Analysed:02/13/04 <br /> C+�Qalinc 2180 1000 µg/kg 2500 87.2 GS-135 0,458 30 <br /> Surrogole!n-e7 lorafolu¢11f(Gff) 98.5 100 98,5 70-130 <br /> Matrix Spike(CN01253-NtS1) Source:CNBOSOS-08 Prepared&Analyzed:02/13/04 <br /> Gasoline 2230 — loon µg/kg 2.500 ND 89.2 63-124 <br /> .Surro90ftr o-Chlnrntnluene(Gas) 107 100 101 70-130 <br /> Matrix Spike bop(CN01253-MSDI) Source:CNBO505-09 Prepared&Analyzed:02/13/04 <br /> ["ragalinc - - 2250 1000 µgJkg 2500 ND 90.0 63-124 0.893 35 <br /> Surrogalc:o-Chlornloluene(Gas) 95-7 100 95.7 10-130 <br /> CA DOHS ELAP Accreditation/Registration Number 1233 <br /> 3249 Fitzgerald Road Rancho Cordova, CA.95742 www.califolrni,alab.com 91.6-638-7301 Fax. 916-6384510 <br />