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' 885 Jarvis Drive <br /> Sequoia Morgan Hill 95037 <br /> (A08)776--9600 <br /> Analytical FAX <br /> �� <br />' www sequoialabs cam <br />' ETIC Engtneenng 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 Motse 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 5JZ0016-EPA 5030B PIT <br />' LCS(5J20016-BSI) Prepared&Analyzed 10/20/05 <br /> 1,1,2,2-Tetrachloroethane 109 050 100 109 70-140 <br />' Tettachloroethene 922 050 100 92 85-125 <br /> Toluene 898 050 ]Go 90 85-120 <br /> 1,2,3-Tnchlorobenzene 144 050 100 144 70-135 QC01 <br />' 1,2,4-Tnchlorobenzene 133 050 100 133 70-130 QC01 <br /> 1,1,1-Tnchloroethane 894 050 100 89 85-135 <br /> 1,1,2-Tnchloroethane 767 050 100 77 85-120 QCO2 <br />' Trichloroethene 866 050 100 87 60-140 <br /> Tnchlorofluoromethane 953 050 " 100 95 85-130 <br />' nehloropropane 11 1 050 100 ill 65-125 <br /> nmethylbenzene 125 050 100 125 85-120 QC01 <br /> 1,3,5-Tnmethylbenzene 126 050 100 126 75-130 <br /> Vinyl chloride 988 050 100 99 55-145 <br /> Xylenes(total) 35 8 050 300 119 85-125 <br /> ISurrogate Dibromofluoromelhane 478 500 96 65-130 <br /> Surrogate 1 2-Dichloroethane-d4 460 500 92 60-135 <br /> Surrogate 12-Dichloroethane-d4 460 500 92 60-135 <br /> Surrogate Toluene-d8 516 500 103 70-120 <br /> Surrogate 4-Bromofluorobenzene 491 500 98 70-120 <br /> LCS(5J20016-BS2) Prepared 10/20/05 Analyzed 10/21/05 <br /> tert-Amyl methyl ether 100 050 ug(l 100 100 80-115 <br /> IBenzene 109 050 100 108 65-115 <br /> Bromobenzene 10 4 0 50 100 104 80-120 <br /> Bromochloromethane 106 050 100 106 60-145 <br /> Bromodichloromethane 11 9 050 100 119 75-150 <br /> Bromoform 103 050 100 103 60-125 <br /> Bromomethane 979 10 ^ 100 98 40-150 <br /> tert-Butyl alcohol 642 20 500 128 75-150 <br /> sec-Butylbenzene 105 0 50 " 100 105 80-130 <br /> Ito t-Butylbenzene 101 050 100 101 80-125 <br /> �ia Analytical-Morgan Hill The results to 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 68 of 80 <br />