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CALIFORNIA LABORATORY SERVICES <br /> Page 21 of 27 03/13/14 15:33 <br /> Kleinfelder(Stockton) Project: SR4 <br /> 2001 Arch-Airport Road,suite 100 Project Number: 113961.8 CLS Work Order#:CXCO398 <br /> Stockton,CA 95206 Project Manager: Doug Heard COC#:28764,62,63 <br /> CAM 17 Metals-Quality Control <br /> Reporting Spike Source °/uREC RPD <br /> Analyte Result Limit Units Level Result °/uRBC Limits RPD Limit Notes <br /> Batch CX01645-EPA 3050B <br /> Blank(CX01645-BLKI) Prepared&Analyzed:03/11/14 <br /> Arsenic ND 0.10 mg/kg <br /> Selenium ND 0.25 <br /> Thallium ND 0.10 " <br /> LCS(CX01645-BS1) Prepared&Analyzed:03/11/14 <br /> Arsenic 5.18 0.10 mg/kg 5.00 104 75-125 <br /> Selenium 5.20 0.25 5.00 104 75-125 <br /> Thallium 5.42 0.10 5.00 108 75-125 <br /> Matrix Spike(CX01645-MS1) Source:CXCO393-01 Prepared&Analyzed:03/11/14 <br /> Arsenic 28.4 1.0 mg/kg 5.00 17.9 210 75-125 QM-5 <br /> Selenium 5.33 2.5 5.00 ND 107 75-125 <br /> Thallium 6.47 1.0 5.00 0.210 125 75-125 <br /> Matrix Spike Dup(CX01645-MSDI) Source:CXCO393-01 Prepared&Analyzed:03/11/14 <br /> Arsenic 26.5 1.0 mg/kg 5.00 17.9 172 75-125 7 30 QM-5 <br /> Selenium 5.44 2.5 5.00 ND 109 75-125 2 30 <br /> Thallium 6.44 1.0 5.00 0.210 125 75-125 0.4 30 <br /> Batch CX01646-EPA 3010A <br /> Blank(CX01646-BLK1) Prepared&Analyzed:03/11/14 <br /> Antimony ND 2.5 mg/kg <br /> Barium ND LO " <br /> Beryllium ND 0.50 " <br /> Cadmium ND 0.50 " <br /> Cobalt ND 1.0 " <br /> Chromium ND 1.0 " <br /> Copper ND 1.0 " <br /> Lead ND 2.5 <br /> Molybdenum ND 1.0 " <br /> Nickel ND 1.0 " <br /> Silver 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 />