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CALIFORNIA LABORATORY SERVICES <br /> Page 7 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 <br /> Reporting <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> GW-2(CWB0402-02)Water Sampled:02/12/13 10:15 Received:02/12/13 16:25 <br /> Toluene 0.60 0.50 µg/L 1 CW00978 02/13/13 EPA 8260B <br /> 1,2,3-Trichlorobenzene ND 0.50 " <br /> 1,2,4-Trichlorobenzene ND 0.50 " <br /> 1,1,1-Trichloroethane ND 0.50 " <br /> 1,1,2-Trichloroethane ND 0.50 " <br /> Trichloroethene ND 0.50 " <br /> Trichlorofluoromethane ND 0.50 " <br /> 1,2,3-Trichloropropane ND 0.50 " <br /> 1,2,4-Trimethylbenzene 1.1 0.50 " <br /> 1,3,5-Trimethylbenzene ND 0.50 " <br /> Vinyl chloride ND 1.0 " <br /> Xylenes(total) 3.1 1.0 " <br /> Surrogate:1,2-Dichloroethane-d4 121 % 66-135 " <br /> Surrogate: Toluene-d8 80% 72-125 " <br /> Surrogate:4-Bromofluorobenzene 105% 73-125 " <br /> GW-3(CWB0402-03)Water Sampled:02/12/13 13:40 Received:02/12/13 16:25 <br /> Acetone ND 10 µg/L 1 CW00978 02/13/13 02/13/13 EPA 8260B <br /> Benzene ND 0.50 " <br /> Bromobenzene ND 0.50 " <br /> Bromochloromethane ND 0.50 " <br /> Bromodichloromethane ND 0.50 " <br /> Bromoform ND 0.50 " <br /> Bromomethane ND 1.0 " <br /> 2-Butanone ND 10 " <br /> n-Butylbenzene ND 0.50 " <br /> sec-Butylbenzene ND 0.50 " <br /> tert-Butylbenzene ND 0.50 " <br /> Carbon tetrachloride ND 0.50 " <br /> Chlorobenzene ND 0.50 " <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 />