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Pinnacle Environmental Inc. Project: 248 Industrial Stockton,CA <br /> 739 Black Point Place Project Number: EST2896 Reported: <br /> Clayton,CA 94517 Project Manager: Peter Cloven 06-Apr-12 18:51 <br /> Volatile Organic Compounds-Quality Control <br /> Environmental Support Technologies <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch 42C2201-Volatiles <br /> Blank(42C2201-BLKI) Prepared&Analyzed:03/20/12 <br /> Chloroethane ND 0.20 ug/l <br /> Chloroform ND 0.20 <br /> Chloromethane ND 0.50 <br /> cis-1,2-Dichloroethene ND 0.20 <br /> cis-1,3-Dichloropropene ND 0.50 <br /> Dibromochloromethane ND 0.50 <br /> Dibromomethane ND 0.50 <br /> Dichlorodifluoromethane ND 0.20 <br /> Ethylbenzene ND 0.20 <br /> Hexachlorobutadiene ND 1.0 <br /> Isopropylbenzene ND 0.50 <br /> meta-and para-Xylenes ND 0.50 <br /> Methylene Chloride ND 0.20 <br /> Naphthalene ND 1.0 <br /> n-Butylbenzene ND 1.0 <br /> n-Propylbenzene ND 0.50 <br /> ortho-Xylene ND 0.20 <br /> p-Isopropyltoluene ND 0.50 <br /> sec-Butylbenzene ND 0.50 <br /> Styrene ND 0.50 <br /> tert-Butylbenzene ND 0.50 <br /> Tetrachloroethene ND 0.10 <br /> Toluene ND 0.50 <br /> trans-1,2-Dichloroethene ND 0.20 <br /> trans-l,3-Dichloropropene ND 0.50 <br /> Trichloroethene ND 0.10 <br /> Trichlorofluoromethane ND 0.20 <br /> Vinyl Chloride ND 0.10 <br /> 2-Propanol ND 10 <br /> Surrogate:Dibromofluoromethane 12.6 12.5 101 75-125 <br /> Surrogate:Toluene-d8 11.8 12.5 94.8 75-125 <br /> Surrogate:4-Bromofluorobenzene 12.0 12.5 96.2 75-125 <br /> The results in this report apply to the samples analyzed in accordance with the chain of custody document.This analytical report must be reproduced in its entirety. <br /> 16510 Aston Street,Irvine,California 92606 <br /> Telephone:(949)679-9500 Fax:(949)679-9501 <br /> Page 58 of 69 <br />