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CALIFORNIA LABORATORY SERVICES <br /> Page 13 of 14 02/15/13 15:58 <br /> Tetra Tech Geo Project: VOP-TRACY <br /> 2969 Prospect Park Drive,Suite 100 Project Number: 117-7059009 CLS Work Order#:CWB0402 <br /> Rancho Cordova,CA 95670 Project Manager: Tim Costello COC#: <br /> Volatile Organic Compounds by EPA Method 8260B - Quality Control <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch CW00978-EPA 5030 Water MS <br /> Blank(CW00978-BLK1) Prepared&Analyzed:02/13/13 <br /> 1,3,5-Trimethylbenzene ND 0.50 µg/L <br /> Vinyl chloride ND 1.0 " <br /> Xylenes(total) ND 1.0 " <br /> Surrogate:1,2-Dichloroethane-d4 11.5 10.0 115 66-135 <br /> Surrogate:Toluene-d8 7.95 10.0 80 72-125 <br /> Surrogate:4-Bromofluorobenzene 10.6 10.0 106 73-125 <br /> LCS(CW00978-BS1) Prepared&Analyzed:02/13/13 <br /> Benzene 18.1 0.50 µg/L 20.0 90 60-135 <br /> Chlorobenzene 17.0 0.50 20.0 85 60-133 <br /> 1,1-Dichloroethene 18.1 0.50 20.0 91 42-150 <br /> Toluene 17.8 0.50 20.0 89 60-137 <br /> Trichloroethene 17.3 0.50 20.0 87 62-140 <br /> Surrogate:1,2-Dichloroethane-d4 8.88 10.0 89 66-135 <br /> Surrogate:Toluene-d8 10.0 10.0 100 72-125 <br /> Surrogate:4-Bromofluorobenzene 10.7 10.0 107 73-125 <br /> LCS Dup(CW00978-BSD1) Prepared&Analyzed:02/13/13 <br /> Benzene 21.0 0.50 µg/L 20.0 105 60-135 15 25 <br /> Chlorobenzene 19.2 0.50 20.0 96 60-133 12 25 <br /> 1,1-Dichloroethene 16.9 0.50 20.0 85 42-150 7 25 <br /> Toluene 20.8 0.50 20.0 104 60-137 16 25 <br /> Trichloroethene 20.4 0.50 20.0 102 62-140 16 25 <br /> Surrogate:1,2-Dichloroethane-d4 8.99 10.0 90 66-135 <br /> Surrogate:Toluene-d8 10.2 10.0 102 72-125 <br /> Surrogate:4-Bromofluorobenzene 10.6 10.0 106 73-125 <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 />