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CALIFORNIA LABORATORY SERVICES <br /> Page 30 of 31 02/08/13 12:06 <br /> Tetra Tech Geo Project: VOP-TRACY <br /> 2969 Prospect Park Drive,Suite 100 Project Number: 117-7059009 CLS Work Order#:CWB0016 <br /> Rancho Cordova,CA 95670 Project Manager: Tim Costello COC#:2 COCs <br /> Organochlorine Pesticides by EPA Method 8081A- Quality Control <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch CW00710-LUFT-DHS GCNV <br /> Matrix Spike Dup(CW00710-MSDI) Source:CWB0020-13 Prepared&Analyzed:02/04/13 <br /> Surrogate:Decachlorobiphenyl 20.6 µg/kg 20.8 99 52-141 <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 />