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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 /> LCS(42C2201-BSI) Prepared&Analyzed:03/20/12 <br /> Chloroethane 14.0 0.20 ug/l 12.5 112 60-137 <br /> Chloroform 12.8 0.20 12.5 102 82-125 <br /> Chloromethane 9.17 0.50 12.5 73.4 58-139 <br /> cis-1,2-Dichloroethene 12.6 0.20 12.5 101 85-116 <br /> cis-1,3-Dichloropropene 13.3 0.50 12.5 106 66-142 <br /> Dibromochloromethane 13.0 0.50 12.5 104 61-140 <br /> Dibromomethane 13.5 0.50 12.5 108 66-143 <br /> Dichlorodifluoromethane 10.2 0.20 12.5 81.6 47-129 <br /> Ethylbenzene 11.8 0.20 12.5 94.7 83-115 <br /> Hexachlorobutadiene 12.5 1.0 12.5 99.9 71-145 <br /> Isopropylbenzene 12.6 0.50 12.5 100 85-116 <br /> meta-and para-Xylenes 23.4 0.50 25.0 93.7 83-115 <br /> Methylene Chloride 13.0 0.20 12.5 104 81-126 <br /> Naphthalene 11.6 1.0 12.5 93.2 56-136 <br /> n-Butylbenzene 12.3 1.0 12.5 98.3 60-149 <br /> n-Propylbenzene 13.0 0.50 12.5 104 77-129 <br /> ortho-Xylene 11.9 0.20 12.5 94.9 85-115 <br /> p-Isopropyltoluene 12.3 0.50 12.5 98.6 63-144 <br /> sec-Butylbenzene 12.6 0.50 12.5 101 78-128 <br /> Styrene 12.9 0.50 12.5 103 65-142 <br /> tert-Butylbenzene 12.1 0.50 12.5 97.0 79-128 <br /> Tetrachloroethene 12.6 0.10 12.5 100 66-144 <br /> Toluene 12.7 0.50 12.5 102 70-115 <br /> trans-1,2-Dichloroethene 13.3 0.20 12.5 106 72-133 <br /> trans-l,3-Dichloropropene 13.8 0.50 12.5 110 68-140 <br /> Trichloroethene 12.6 0.10 12.5 101 68-132 <br /> Trichlorofluoromethane 13.0 0.20 12.5 104 62-144 <br /> Vinyl Chloride 9.76 0.10 12.5 78.1 66-137 <br /> Surrogate:Dibromoffuoromethane 11.9 12.5 95.5 75-125 <br /> Surrogate:Toluene-d8 11.8 12.5 94.0 75-125 <br /> Surrogate:4-Bromofluorobenzene 12.1 12.5 96.5 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 60 of 69 <br />