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CALIFORNIA LABORATORY SERVICES <br /> Page 10 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 /> Extractable Petroleum Hydrocarbons by EPA Method 8015M- Quality Control <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch CW00987-EPA 3510B GCNV <br /> Blank(CW00987-BLK1) Prepared&Analyzed:02/14/13 <br /> Diesel ND 0.050 mg/L <br /> Motor Oil ND 0.050 " <br /> Surrogate:o-Terphenyl 0.0214 0.0250 86 65-135 <br /> LCS(CW00987-BS1) Prepared&Analyzed:02/14/13 <br /> Diesel 1.73 0.050 mg/L 2.50 69 65-135 <br /> Surrogate:o-Terphenyl 0.0262 0.0250 105 65-135 <br /> LCS Dup(CW00987-BSD1) Prepared&Analyzed:02/14/13 <br /> Diesel 1.66 0.050 mg/L 2.50 67 65-135 4 30 <br /> Surrogate:o-Terphenyl 0.0267 110.0250 107 65-135 <br /> Matrix Spike(CW00987-MS1) Source:CWB0397-01 Prepared&Analyzed:02/14/13 <br /> Diesel 1.94 0.050 mg/L 2.50 ND 77 46-137 <br /> Surrogate:o-Terphenyl 0.0287 110.0250 115 65-135 <br /> Matrix Spike Dup(CW00987-MSD1) Source:CWB0397-01 Prepared&Analyzed:02/14/13 <br /> Diesel 1.83 0.050 mg/L 2.50 ND 73 46-137 5 30 <br /> Surrogate:o-Terphenyl 0.0263 110.0250 105 65-135 <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 />