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Analytical Laboratory CERTIFICATE OFANALYSIS <br /> Friday, February 24, 2017 <br /> Attention : William Little <br /> Advanced GeoEnvironmental , Inc . Report Page 14 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 /> Blank (AA72615-BLKI ) Prepared & Analyzed : 26-Jan- 17 <br /> o-Xylene ND 2.00 ug/kg <br /> tert-Amyl Methyl Ether (TAME) ND 2.00 it <br /> tert-Butyl Alcohol (TBA) ND 50.0 " <br /> Diisopropyl Ether (DIPE) ND 2.00 " <br /> Surrogate: 1,2-Dichloroelhane44 43.4 It 40. 0 109 76430 <br /> LCS (AA72615-BSI) Prepared & Analyzed: 26-Jan- 17 <br /> Benzene 19.2 2.00 ug/kg 20.0 96 88424 <br /> Chlorobenzene 19.2 2.00 " 20.0 96 75- 117 <br /> 1 , 1-Dichloroethene 15. 1 2.00 20.0 75 60- 133 <br /> Toluene 20.6 2.00 20.0 103 88- 122 <br /> Trichloroethene 19. 1 2.00 it 20.0 95 85-117 <br /> Surrogate: 1, 2-Dichloroethane-d4 43.9 if40.0 110 76-130 <br /> LCS Dup (AA72615-BSD1) Prepared & Analyzed : 26-Jan- 17 <br /> Benzene 19. 1 2.00 ug/kg 20.0 96 88424 0.4 20 <br /> Chlorobenzene 19.4 2.00 20.0 97 75417 0.7 20 <br /> 1 , 1-Dichloroethene 12.8 2.00 20.0 64 60- 133 16 20 <br /> Toluene 20.4 2.00 20.0 102 88- 122 1 20 <br /> Trichloroethene 18.6 2.00 20.0 93 85- 117 2 20 <br /> Surrogate: l,2-Dichloroethane-d4 38. 8 40. 0 97 76-130 <br /> Matrix Spike (AA72615-MSl) Source : 7012617-02 Prepared & Analyzed: 26-Jan- 17 <br /> Benzene 12.2 2.00 ug/kg 20.0 ND 61 60- 124 <br /> Chlorobenzene 12.3 2.00 20.0 ND 62 60- 117 <br /> l. l-Dichloroethene 12.8 2.00 20.0 ND 64 60- 133 <br /> Toluene 15.0 2.00 20.0 ND 75 65422 <br /> Trichloroethene 14.2 2.00 20.0 ND 71 65417 <br /> Surrogate: l,2-Dichloroethane-d4 38.4 40.0 96 76-130 <br /> 47 1 <br /> mg/L = milligrams per Liter = ppm DLR = Detection Limit fort urpose of Reporting. <br /> ug/L = micrograms per Liter = pph Exceptional sample matrices or interferences nrny <br /> result in higher detection Itntita. <br /> RESPECTFULLY SUBMITTED, EaNVIRONMIL) O L Fi !-H <br /> Jonathan Le, Laboratory Director <br /> 3935 N. Coronado Ave Stockton CA . 95204 vhone : (209) 477-8105 Fax: (209) 546- 7497 <br />