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10/28/2004 10:27 9166384510 CLS LABS PAGE 06 <br /> CALiFoRmA LABORATORY SERVICES <br /> 10/28/04 09:26 <br /> CH2M Hill Project: PG&E-Lathrop CLS Work Order#:CNB0208 <br /> 155 Grand Ave-;Suite 1000 Project Numbcr. 283984.01.CM <br /> Oakland CA.94612 Project Manager: Bob Noycs COC##:43742 <br /> Gas/BTEX by GC PID/FID - Quality Control <br /> Reporting Spike Source %RF,C RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch CN01008-EPA 5030 Soil GC <br /> [clank(CN01008-BLK1) Prepared&Analyzed:02/06/04 <br /> Gasoline ND 1000 9 k <br /> Bcnzcnc ND 5-0 " <br /> Toluene ND 5.0 " <br /> Ethylbcnzcnc ND 5.0 " <br /> Xylenes(total) ND 10 " <br /> Surrogate:o-Chloro toluene(Gns) 110 IDD Ifo 7D-i3n <br /> LCS(CN01008-BSI) Prepared&Analyzed:02/06/04 <br /> Rcnzcnc 115 5.0 -Mg/kg 100 115 69-120 <br /> Toluene 112 5.0 100 112 74-120 <br /> Ethylbenzenc Ill 5.0 100 Ill 76-12I <br /> Xylenes(total) 324 10 300 108 81-121 <br /> Surrogate:o•Chlorololuene(RTF. 106 IDO 106 70-130 <br /> ,Surrogate:o-Chlorofoluene(Gas) 105 100 105 70-130 <br /> LCS Dup(CN01008-BS131) Prepared&Analyzed:02/06/04 <br /> Bcnzonc 118 5.0 µglkg--- 100 118 69-120 2.58 30 <br /> Toluene 116 5-0 100 116 74-120 3.51 30 <br /> Ethylbenzenc 113 5.0 100 113 76-121 1.79 30 <br /> Xylenes(total) 329 10 300 110 91-121 1.53 30 <br /> Surrogate:o-Chlarofoluene(BTEA? 107 100 107 70-130 <br /> .Surrngafe:o-Chlorotohrene(Gas) 108 loo 108 70.130 <br /> Matrix Spike(CNO1008-MSI) Source:CNBO208-01 Prepared&Analyzed;02/06/04 <br /> Br l t7 5.0 pg/kg 100 ND 117 51-123 <br /> Toluene 117 5.0 100 ND 117 6t-123 <br /> Ethylbcnzcnc 112 5.0 " 100 ND 112 0-124 <br /> Xylenes(total) 329 10 300 ND 110 66-125 <br /> Surragate:o-Cfrloratolue.ne(RTF,X) 106 " 100 106 70-130 <br /> Surrogate-'n-Chlorofolrrenc(Gas) 107 100 !07 70-130 <br /> CA DOHS ELAP Accreditation/Registration Number 1233 <br /> 3249 Fitzgerald Road Rancho Cordova,CA 95742 www.californialstb.com. 916-638-7301 Fax: 916-6384510 <br />