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885 Jarvis Drive <br /> Sequoia Morgan Hill,CA95037 <br /> 77 <br /> (aog)776-4600-9600 <br /> �& <br /> Analytical FAX(408)782 6308 <br />' www sequoialabs corn <br />' ETIC Engineering Inc-Pleasant Hill(Exxon) Project Exxon 7-3942 MOJ09I3 <br /> 2285 Morello Avenue Project Number Exxon 7-3942 Reported <br /> Pleasant Hili 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 />' £valuation Spike Source %REC RPD <br /> Analyte Result Luno Units Level Result %REC Lunzts RPD Limit Notes <br />' Batch 5J20016-EPA 5030B PIT <br /> LCS(5J20016-BS2) Prepared 10/20/05 Analyzed 10/21/05 <br /> Ethyl tert-butyl ether 926 050 100 93 75-130 <br />' Ethylbenzene 101 050 100 101 75-135 <br /> Hezachlorobutadiene 106 2 0 100 106 75-120 <br /> Isopropylbenzene 943 050 " 100 94 80-135 <br />' Methyl tert-butyl ether 941 050 100 94 65-125 <br /> Methylene chloride 9 98 050 100 100 75-135 <br /> Naphthalene 996 5 0 100 90 40-150 <br />' p-Isopropyttoluene 103 050 100 103 80-140 <br /> n-Propylbenzene 100 050 10 0 100 75-135 <br /> WTetrachloroethane <br /> 100 050 100 100 85-130 <br /> 10 3 050 100 103 85-120 <br /> I,1,2,2-Tetrachloroethane 876 050 100 88 70-140 <br /> Tetrachloroethene 108 050 100 108 85-125 <br /> Toluene 107 0 50 100 107 85-120 <br /> 1,2 3-Trichlorobenzene 979 050 " 100 98 70-135 <br />' 1,2,4-Triehlorobenzene 9 13 050 " 100 91 70-130 <br /> 1,1,1-Trichloroethane 107 050 " 100 107 85-135 <br />' 1,1,2-Tnchloroethane 110 050 " 100 110 85-120 <br /> Tnchloroethene 31 8 050 " 100 118 60-140 <br /> Tnchlorofluoromethane 104 0 50 " 100 104 85-130 <br /> 1 2,3-Tnehloropropane 109 050 i 100 109 65-125 <br /> 1,2 4-Tnmethylbenzene 101 0 50 100 101 85-120 <br /> 1,3 5-Tnmethylbenzene 103 050 100 103 75-130 <br />' Vinyl chloride 104 050 100 104 55-145 <br /> Xylenes(total) 31 2 050 300 104 85-125 <br /> Surrogate Dibromofluoromethane 562 500 112 65-130 <br /> Surrogate 12-Dichloroethane-d4 607 500 121 60-135 <br /> Surrogate 12-Dzchloroethane-d4 607 goo 121 60-135 <br /> Surrogate Toluene-d8 558 500 112 70-120 <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 70 of 80 <br />