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CALIFORNIA LABORATORY SERVICES <br />A A^ 111 1 AA. t o <br />Page 18 of 20 <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 />knalyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br />Batch 1703046 - EPA 5030 Soil MS <br />Blank (1703046-BLKI) <br />Prepared & Analyzed: 04/25/17 <br />Surrogate: 4-Bromofluorobenzene <br />33.6 <br />30.0 112 50-128 <br />LCS (1703046 -BSI) <br />- <br />Prepared & Analyzed: 04/25/17 <br />Benzene <br />19.9 <br />5.0 µg/kg <br />20.0 100 64-135 <br />Chlorobenzene <br />19.7 <br />5.0 <br />20.0 99 67-133 <br />I,l-Dichloroethene <br />19.1 <br />5.0 <br />20.0 95 53-137 <br />Toluene <br />19.7 <br />5.0 <br />20.0 99 61-138 <br />Trichloroethene <br />19.7 <br />5.0 <br />20.0 98 64-130 <br />Surrogate: 1,2-Dichloroethane-d4 <br />31.6 <br />30.0 105 50-125 <br />Surrogate: Toluene -d8 <br />29.9 <br />30.0 100 62-125 <br />Surrogate:4-Bromofluorobenzene <br />34.1 <br />30.0 114 50-128 <br />LCS Du 1703046-BSDI <br />_._ ) <br />- <br />____ _ <br />Prepared & Analyzed: 04/25/17 <br />- <br />- - <br />Benzene <br />18.2 <br />5.0 µg/kg <br />20.0 91 64-135 <br />9 30 <br />Chlorobenzene <br />19.7 <br />5.0 <br />20.0 99 67-133 <br />0.1 30 <br />1, 1 -Dichloroethene <br />16.8 <br />5.0 <br />20.0 84 53-137 <br />13 30 <br />Toluene <br />18.5 <br />5.0 <br />20.0 92 61-138 <br />7 30 <br />Trichloroethene <br />18.3 <br />5.0 <br />20.0 91 64-130 <br />7 30 <br />Surrogate: 1,2-Dichloroethane-d4 <br />26.9 <br />30.0 90 50-125 <br />Surrogate: Toluene -d8 <br />29.9 <br />30.0 100 62-125 <br />Surrogate:4-Bromofluorobenzene <br />32.1 <br />30.0 107 50-128 <br />Matrix Spike (1703046 -MSI) - <br />Source: 17DO97_7_-01 <br />- - <br />Prepared: 04/25/17 Analyzed: 04/26/17 <br />Benzene - - <br />17.9 <br />5.0 µg/kg <br />20.0 ND 90 58-139 <br />Chlorobenzene <br />18.1 <br />5.0 <br />20.0 ND 90 62-134 <br />I,I-Dichloroethene <br />19.2 <br />5.0 <br />20.0 ND 96 53-152 <br />Toluene <br />18.2 <br />5.0 <br />20.0 ND 91 58-139 <br />Trichloroethene <br />19.2 <br />5.0 <br />20.0 ND 96 55-138 <br />Surrogate: 1,2-Dichloroethane-d4 <br />33.1 <br />30.0 110 50-125 <br />Surrogate: Toluene -d8 <br />31.0 <br />30.0 103 62-125 <br />Surrogate:4-Bromofluorobenzene <br />32.1 <br />30.0 107 50-128 <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 />