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Excelchem Environmental Labs <br /> RWQC Central Valley Project: 931 Oro <br /> 11020 Sun Center Dr.#200 Project Number: 12-095-150 Date Reported: <br /> Rancho Cordova,CA 95670 Project Manager Jim Barton 09/10/13 11:31 <br /> Volatile Organic Compounds by GC/MS-Quality Control <br /> Anal to Reporting Spike Source %REC RPD <br /> y Resd[ Limit MDL Units Level Result %REC Limits RPD Limit Notes <br /> Batch AW10020-EPA 8260B <br /> LCS(AW 10020-BSI) Prepared&Analyzed:08/30/13 <br /> Surrogate:DibromoJludromethane /1.1 ugd 125 97.1 70.130 <br /> Surrogate:Toluene48 11.3 11.5 98.1 70-130 <br /> Surrogate:4-Boaraduorobenzon, 13.5 12.5 108 70.130 <br /> 1,1-Diehloroethene 23.4 0.5 0.05 20.0 117 80-120 <br /> Benzene 23.4 0.5 0.06 20.0 117 80.120 <br /> Trichloroethene 23.2 0.5 0.09 20.0 116 80420 <br /> Toluene 23.3 0.5 0.09 20.0 117 80-120 <br /> Chlorobenzeae 22.9 0.5 0.08 20.0 114 80-120 <br /> LCS Dup(AW10020-BSDI) Prepared&Analyzed:08/30/13 <br /> Surrogate.:DtbmmoJluoromethane 11.R u9/1 12.5 94.6 70.130 <br /> Surrogate:Toluene-08 11.5 12.5 99.7 70-130 <br /> Surrogate:4-Brorniihnrobenene 12.6 11.5 100 70.130 <br /> 41-Dichloroethene 20.4 0.5 0.05 20.0 102 80-120 13.6 15 <br /> Benzene 20.8 0.5 0.06 20.0 104 80420 11.8 15 <br /> Trichloroethene 20.7 0.5 0.09 20.0 IN 80-120 11.5 15 <br /> Toluene 20.8 0.5 0.09 20.0 104 80420 11.5 15 <br /> Chlorobenzene 20.8 0.5 0.08 20.0 104 80-120 9.68 15 <br /> Excelchem Environmental Lab. The resuhs in this report apply to the samples and/yzed in accordance with the chain of <br /> coahv y document.This analytical report must be reproduced in its emirety. <br /> a _ <br /> Laboratory Representative <br /> Page 10 of 14 <br />