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CALIFORNIA LABORATORY SERVICES <br />Page 14 of 20 U4/27/17 U9:14 <br />AMEC Foster Wheeler Project: Boretech <br />10940 White Rock Road, suite 190 Project Number: SA16170090.01.6000 CLS Work Order #: 17DIO86 <br />Rancho Cordova CA, 95670 Project Manager: Josh Howard COC #: 182204 <br />CAM 17 Metals - Quality Control <br />Reporting Spike Source %REC RPD <br />Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br />Batch 1702999 - EPA 3050B <br />Matrix Spike Dup (1702999-MSD1) <br />Source: 17DIO86-01 <br />Prepared & Analyzed_ 04/25/17 <br />Antimony <br />100 <br />2.5 mg/kg <br />100 <br />22.3 <br />78 <br />75-125 <br />4 <br />30 <br />QM -5 <br />Arsenic <br />101 <br />1.0 <br />100 <br />11.5 <br />89 <br />75-125 <br />9 <br />30 <br />Selenium <br />86.2 <br />2.5 <br />100 <br />0.395 <br />86 <br />75-125 <br />4 <br />30 <br />Barium <br />119 <br />1.0 <br />100 <br />13.4 <br />106 <br />75-125 <br />12 <br />30 <br />Thallium <br />98.4 <br />1.0 <br />100 <br />0.425 <br />98 <br />75-125 <br />1 <br />30 <br />Beryllium <br />75.3 <br />1.0 <br />100 <br />ND <br />75 <br />75-125 <br />8 <br />30 <br />Cadmium <br />78.4 <br />1.0 <br />100 <br />10.4 <br />68 <br />75-125 <br />3 <br />30 <br />QM -5 <br />Cobalt <br />229 <br />1.0 <br />100 <br />262 <br />NR <br />75-125 <br />11 <br />30 <br />QM -5 <br />Chromium <br />3090 <br />1.0 <br />100 <br />2150 <br />935 <br />75-125 <br />51 <br />30 <br />QM -5 <br />Copper <br />1240 <br />1.0 <br />100 <br />1440 <br />NR <br />75-125 <br />30 <br />30 <br />QM -5 <br />Lead <br />76.8 <br />2.5 <br />100 <br />1.85 <br />75 <br />75-125 <br />ll <br />30 <br />Molybdenum <br />2650 <br />1.0 <br />100 <br />1900 <br />751 <br />75-125 <br />64 <br />30 <br />QM -5 <br />Nickel <br />223 <br />1.0 <br />100 <br />133 <br />90 <br />75-125 <br />14 <br />30 <br />Silver <br />81.1 <br />1.0 <br />100 <br />ND <br />81 <br />75-125 <br />5 <br />30 <br />Vanadium <br />1160 <br />1.0 <br />100 <br />748 <br />416 <br />75-125 <br />66 <br />30 <br />QM -5 <br />Zinc <br />258 <br />1.0 <br />100 <br />57.2 <br />201 <br />75-125 <br />166 <br />30 <br />QM -5 <br />CA DOHS ELAP Accreditation/Registration Number 1233 <br />3249 Fitzgerald Road Rancho Cordova, CA 95742 www.californialab.com 916-638-7301 <br />Fax: 916-638-4510 <br />