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885 Jarvis Drive <br /> Sequoia Morgan F11 C 95037 <br /> (4008)777 6 9600 <br /> Analytical <br /> FAXsequo labsc m <br /> L� 1 1 www sequoialabs cum <br /> 0 <br /> ETIC Engineenng Inc-Pleasant Hill(Exxon) Project Exxon 7-3942 MOL0952 <br /> 2285 Morello Avenue Project Number Exxon 7-3942 Reported <br />' Pleasant Hill CA,94523 Project Manager Ted Motse 01/16/06 15 09 <br /> Purgeable Hydrocarbons and BTEX by EPA 8015B/8021B - Quality Control <br /> Sequoia Analytical- Morgan Hill <br /> Evaluation Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Lmits RPD Linut Notes <br />' Batch 6AO3005-EPA 5030B PIT <br /> Matrix Spike Dup(6A03005-MSD1) Source MOL1010-03 Prepared&Analyzed 01/03/06 <br /> Gasoline Range Organics(C4-C12) 147 50 ug/l 275 ND 53 55-130 1 35 QM02 <br /> IBenzene 1 98 0 50 410 ND 48 75-150 4 25 QM02 <br /> Toluene 165 050 207 ND 80 80-115 0 6 25 <br /> Ethylbenzene 3 77 050 485 ND 78 75-115 2 25 <br /> IXylenes(total) 221 0 50 23 8 ND 93 75-115 2 25 <br /> Surrogate a a a-Trifluorotoluene 822 Soo 103 80-120 <br />' Surrogate 4-Bromofluorobenzene 829 800 104 80-120 <br /> Batch 6AO4017-EPA 5030B IPITI <br /> Blank(6A04017-BLKI) Prepared&Analyzed 01/04/06 <br /> Wsoline Range Organics(C4-C12) ND 25 ug/1 <br /> enzene ND 0 25 <br /> Toluene ND 025 <br /> I Etbylbenzene ND 025 <br /> Xylenes(total) ND 025 <br /> Methyl tert-butyl ether ND 125 <br /> Surrogate a a a-Tr fluorotoluene 826 " 800 103 80-120 <br /> Surrogate 4-Bromofluorobenzene 791 800 99 80-120 <br /> I LCS(6A04017-BS1) Prepared&Analyzed 01/04/06 <br /> Gasoline Range Organics(C4-C12) 159 50 ug/l 275 58 55-130 <br /> Surrogate 4-Bromofluorobenzene 79 7 800 100 80-120 <br /> LCS(6A04017-BS2) Prepared&Analyzed 01/04/06 <br /> Benzene 779 050 ug/1 100 78 75-150 <br /> Toluene 940 050 100 94 80-115 <br /> Ethylbenzene 100 050 100 100 75-115 <br /> Xylenes(total) 303 050 300 101 75-115 <br /> Surrogate a a a-Tr!fluorotoluene 825 " 800 103 80-120 <br /> 1 <br /> Sequoia 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 22 of 31 <br /> 1 <br />