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CALIFORNIA LABORATORY SERVICES <br />Page 19 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 #: 17D1086 <br />Rancho Cordova CA, 95670 Project Manager: Josh Howard COC #: 182204 <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 1703046 - EPA 5030 Soil MS <br />Matrix Spike Dup (1703046-MSD1) <br />Source: 17DO9_77-0_1_ <br />Prepared: 04/25/17 Analyzed: 04/26/17 <br />Benzene <br />17.6 <br />5.0 pglkg <br />20.0 <br />ND <br />88 <br />58-139 <br />2 <br />30 <br />Chlorobenzene <br />17.6 <br />5.0 <br />20.0 <br />ND <br />88 <br />62-134 <br />3 <br />30 <br />I,1-Dichloroethene <br />18.4 <br />5.0 <br />20.0 <br />ND <br />92 <br />53-152 <br />4 <br />30 <br />Toluene <br />17.6 <br />5.0 <br />20.0 <br />ND <br />88 <br />58-139 <br />3 <br />30 <br />Trichloroethene <br />19.0 <br />5.0 <br />20.0 <br />ND <br />95 <br />55-138 <br />1 <br />30 <br />Surrogate: 1,2-Dichloroethane-d4 <br />31.1 <br />30.0 <br />104 <br />50-125 <br />Surrogate: Toluene -d8 <br />30.3 <br />30.0 <br />101 <br />62-125 <br />Surrogate:4-Bromofluorobenzene <br />32.1 <br />30.0 <br />107 <br />50-118 <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 />