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' q 885Drive <br /> Sequoia Morgan Hilll a CAA 9559337 <br /> (408)776-9600 <br /> Analytical FAX <br /> D 8 <br />' www sequoialabs com <br /> 7EC Engineering Inc-Pleasant Hill(Exxon) Project Exxon 7-3942 MOJ0913 <br /> 5 Morello Avenue Project Number Exxon 7-3942 Reported <br /> sant Htll CA,94523 Project Manager Ted Moise 11/09/05 15 08 <br />' Volatile Organic Compounds by EPA Method 8260B - Quality Control <br /> Sequoia Analytical - Morgan Hill <br />' Evaluation Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Lumt Notes <br /> Batch 5J20016-EPA 5030B PIT <br /> LCS(5J20016-BSI) Prepared&Analyzed 10/20/05 <br /> 1,2-Dtbromoethane(EDB) 744 050 100 74 85-120 QCO2 <br /> 1,2-Dtbromoethane(EDB) 744 050 100 74 85-120 QCO2 <br /> Dibromomethane 741 050 " 100 74 70-145 <br /> 1,2-Dichlorobenzene 129 050 100 129 80-125 QC01 <br /> 1,3-Dichlorobenzene 120 050 100 120 75-120 <br /> 1,4-Dichlorobenzene 131 050 100 131 75-120 QC01 <br /> Dtchlorodttlumomethane 100 050 100 100 60-130 <br />' 1,1 Dichloroethane 923 050 " 100 82 55-140 <br /> 1,2-Dichloroethane 8 14 050 " 100 81 85-130 QCO2 <br />' chloroethane 8 14 050 " 100 81 85-130 QCO2 <br /> 0chloroetheric 855 050 100 86 75-135 <br /> cis-1,2-Dichloroethene 836 050 100 84 85-130 QCO2 <br />' trans-l,2-Dtchloroethene 844 050 " 100 84 70 130 <br /> 1,2-Dichloropropane 885 050 100 88 85-115 <br /> 1,3-Dtchloropropane 776 050 100 78 85-115 QCO2 <br />' 2,2-Dtchloropropane 763 20 100 76 50-150 <br /> I,1-Dtchloropropene 904 050 100 90 85-125 <br /> IEthanol 380 100 ^ 200 190 70-135 QC01 <br /> Ethyl ten-butyl ether 751 050 100 75 75-130 <br /> Ethylbenzene 11 8 0 50 100 118 75-135 <br />' Hexachlorobutadtene 149 20 100 149 75-120 QC01 <br /> Isopropylbenzene 121 050 10 0 121 80-135 <br /> Methyl tert butyl ether 645 0 50 100 64 65-125 QCO2 <br /> Methylene chloride 781 050 100 78 75-135 <br /> Naphthalene l4 3 5 0 100 143 40-150 <br />' p-Isopropyltoluene 13 1 050 100 131 80-140 <br /> n-Propylbenzene 125 050 100 125 75-135 <br /> Styrene 113 0 50 " 100 113 85-130 <br /> 11,1,1,2-Tetrachloroethane 108 050 " 100 108 85-120 <br /> �o1a Analytical-Morgan Hill The results in this report apply to the samples analyzed in accordance with the chain of <br /> custody document Unless otherwise stated results are reported on a wet weight basis This <br /> analytical report trust be reproduced in its entirety <br /> Page 67 of 80 <br />