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' 8Hi l CA 5037 <br /> Drive <br /> Sequoia Morgan Hill CA 95037 <br /> (408)776 9600 <br /> r Analytical FAX(408)782-6308 <br />' www sequoialabs conk <br /> rETIC Engineering Inc-Pleasant Hill(Exxon) Project Exxon 7-3942 MOJ0913 <br /> 2285 Morello Avenue Project Number Exxon 7-3942 Reported <br /> Pleasant Hill 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 Limit Notes <br /> Batch 5J20016-EPA 5030B PIT <br /> LCS(5J20016-BS2) Prepared 10/20/05 Analyzed 10/21/05 <br /> Surrogate 4-Bromofluorobenzene 514 ug/1 500 103 70-120 <br />' Matrix Spike(5J20016-MSI) Source MOJ0417-11 Prepared 10/20/05 Analyzed 10/21/05 <br /> Cert-Amyl methyl ether 104 050 ug/l 100 ND 104 80-115 <br /> Benzene 120 0 50 10 0 ND 120 65-115 QM01 <br />' Bromobenzene 110 0 50 100 ND 110 80-120 <br /> Bromochloromethane 11 5 0 50 100 ND 115 60-145 <br /> Bromodtchloromethane 12 8 0 50 100 ND 128 75-150 <br />' Bromofonn 105 050 100 ND 105 60-125 <br /> Bromomethane 119 10 " 100 ND 119 40-150 <br /> putyl alcohol 563 20 500 ND 113 75-120 <br /> utylberizene 114 050 100 035 110 80-130 <br /> tert-Butylbenzene 10 9 050 100 ND 109 80-125 <br />' n-Butylbenzene 10 8 050 100 ND 108 80-130 <br /> Carbon tetrachloride 11 7 050 100 ND 117 75-140 <br /> Chlorobenzene 12 8 0 50 100 074 121 80-120 QCO1 <br /> IChloroethane 11 1 10 100 ND 111 75-120 <br /> Chloroform 13 0 0 50 " 100 ND 130 80-125 QM01 <br /> Chloromethane 120 0 50 100 ND 120 50-135 <br /> 2-Chlorotoluene 11 2 050 100 ND 112 80-120 <br /> 4-Chlorotoluene 112 050 " 100 ND 112 75-125 <br /> Di-isopropyl ether 140 050 " 100 ND 140 75-125 QC01 <br /> 1,2-Dibrorno-3-chloropropane 116 10 100 ND 116 65-140 <br /> Dibromochloromethane 115 0 50 100 ND 115 70-125 <br /> 1,2-Dibromoethane(EDB) 112 050 100 ND 112 85-120 <br /> 1,2-Dibromoethane(EDB) 112 0 50 100 ND 112 85-120 <br /> Dibromomethane 12 9 0 50 „ 100 ND 129 70-145 <br /> 1,2-Dichlorobenzene 121 050 100 ND 121 80-125 <br /> 1,3-Dichlorobenzene 11 1 0 50 100 ND 111 75-120 <br /> 1,4-Dichlorobenzene 122 050 100 ND 122 75-120 QC01 <br /> �oia 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 must be reproduced in its entirety <br /> Page 71 of 80 <br />