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r885 Tarns Drive <br /> Sequoia Morgan Hill,CA95037 <br /> 776-9600 <br /> 7 <br /> (406)776-9600-9600 <br /> Analytical FAX equo labs c 08 <br /> FAX <br /> squolabs com <br /> rETIC Engineering 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 Moise 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 Lirmt Units Level Result %REC Lnmts RPD Lmut Notes <br /> rBatcb 6AO3005-EPA 50308 PIT <br /> Blank(6A03005-BLKI) Prepared&Analyzed 01/03/06 <br /> r <br /> Gasoline Range Organics(C4-C 12) ND 25 ugfl <br /> Benzene ND 025 M <br /> Toluene ND 025 <br /> r Ethylbenzene ND 025 <br /> Xylenes(total) ND 025 <br /> Methyl tent-butyl ether ND 125 " <br /> Surrogate a a a-Trifluorotoluene 838 800 105 80-120 <br /> Surrogate 4-8romo$uoroben2ene 814 800 102 80-120 <br /> LCS(6A03005-BSI) Prepared&Analyzed 01/03/06 <br /> asoline Range Organics(C4-C12) 180 50 ug/l 275 65 55-130 <br /> arrogate 4-Bromofluorobenzene 832 " 800 104 80-120 <br /> LCS(6A03005-BS2) Prepared&Analyzed 01/03/06 <br /> r Benzene 7 80 050 ug/l 100 78 75-150 <br /> Toluene 926 050 ]0 0 93 80-115 <br /> Ethylbenzene 9 83 0 50 100 98 75-115 <br /> rXylenes(total) 299 050 300 100 75-115 <br /> Surrogate a a a-Trifluorotoluene 83 2 800 104 80-120 <br /> r Matrix Spike(6A03005-MSI) Source MOL1010-03 Prepared&Analyzed 01/03/06 <br /> Gasoline Range Organics(C4-C12) 145 50 ugA 275 ND 53 55-130 QM02 <br /> Benzene 191 0 50 410 ND 47 75-150 QM02 <br /> Toluene 164 050 ^ 207 ND 79 80-115 QM02 <br /> rEthylbenzene 370 0 50 485 ND 76 75-115 <br /> Xylenes(total) 217 0 50 23 8 ND 91 75-115 <br /> r Surrogate a a a-Trifluorotoluene 818 800 102 80-120 <br /> Surrogate 4-Bromofluorobenzene 818 800 102 80-120 <br /> I <br /> rSequoia 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 /> r <br /> Page 21 of 31 <br /> r <br />