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PRTUMOH WRONG CERTIFICATE OFANALYSIS <br /> Analytical Laboratory <br /> 3935 N.Coronado Ave,Stockton CA.95204 Phone:(209)477-8105 <br /> Associated Tractor Service,Inc Project Number: Clean Up <br /> 1323 W.Chater Way Project Name: Clean Up Work Order No.: <br /> Stockton,CA 95206 <br /> Project Manager. Larry Borell <br /> Volatile Organic Compounds by EPA Method 8260B-Quality Control <br /> Reporting Spike Source <br /> Analyte Result Limit Units Level Result %REC RPD Notes <br /> Matrix Spike(AC01001-MSI) <br /> 1,2-Dichloroethane 19.0 5.00 ug/kg ND <br /> Ethylbenzene 24.0 5.00 34.0 ND 71 <br /> Benzene 18.1 5.00 20.8 ND 87 <br /> Toluene 140 5.00 160 ND 88 <br /> m,p-Xylene 130 5.00 136 ND 96 <br /> o-Xylene 52.0 5.00 52.8 ND 98 <br /> TPH-Gasoline 2240 200 2220 ND 101 <br /> Matrix Spike Dup(AC01001-MSD1) <br /> Surrogate:Dibromofluoromethane 26.0 ug/kg 25.0 104 70-125 <br /> Ethylbenzene 30.0 5.00 34.0 ND 88 22 <br /> Benzene 18.4 5.00 20.8 ND 88 2 <br /> Toluene 152 5.00 160 ND 95 8 <br /> m,p-Xylene 132 5.00 136 ND 97 2 <br /> o-Xylene 52.0 5.00 52.8 ND 98 0 <br /> TPH-Gasoline 2240 200 2220 ND 101 0 <br /> (�4/4w� <br /> Approved By <br /> Precision Enviro-Tech. — California D.O.H.S.Cert.#2387 <br /> Page 10 of 12 <br />