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Analytical Laboratory CERTIFICATE OFANALYSIS <br /> Friday, February 24, 2017 <br /> Attention : William Little <br /> Advanced GeoEnviron mental , Inc . Report Page 15 of 16 <br /> 837 Shaw Road <br /> Stockton , CA 95215 <br /> Volatile Organic Compounds by EPA Method 8260B - Quality Control <br /> Precision Enviro-Tech <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch AA72615 - Volatiles <br /> Matrix Spike Dup (AA72615-MSD1) Source: 7012617-02 Prepared & Analyzed: 264an- 17 <br /> Benzene 16.3 2.00 ug/kg 20.0 ND 82 60- 124 29 15 <br /> Chlorobenzene 13. 1 2.00 " 20.0 ND 66 60417 6 15 <br /> 1 , 1-Dicliloroethene 14.5 2.00 " 20.0 ND 73 70- 133 13 15 <br /> Toluene 15.9 2.00 20.0 ND 80 65- 122 6 15 <br /> Trichloroethene 15.2 2.00 20.0 ND 76 65417 7 15 <br /> Surrogate: 1,2-Dieh1oroethane-d4 38. 7 40.0 97 76-130 <br /> is . 0 <br /> 1 X <br /> L <br /> nrg/L = milligrams per Liter = ppm DLR = Detection Limil.for Propose ojReporling. FEL <br /> A rt O <br /> ug/L = nucrograms perLiter =pph lwrceptional sample matrices or interjeteuces may t i `� <br /> r esnit in higher detection limits. <br /> RESPECTFULLY SUBMITTED, ENVIPIONMrS I ',L HEALTH <br /> 5/OtADEPARTNIS�A 1 <br /> Jonathan Le, Laboratory Director <br /> 3935 N. Coronado Ave Stockton CA . 95204 phone : (209) 4774105 Fax: (209) 546- 7497 <br />