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819 Striker Ave Ste 8 <br /> 1a) SA e q u 01 a Sacramento,CA 95834 <br /> Analytical (916)921 00 <br /> A <br /> FAX(9(916)921-010100 <br /> www sequoialabs com <br /> Geological Technics,Inc Project Montas Bros S504379 <br /> 1141 7th Street Project Number 724 2 Reported <br />' Modesto CA,95354 Project Manager Mandeep Singh 05/05/05 10 29 <br /> Purgeable Hydrocarbons and BTEX by EPA 8015B/8021B <br /> Sequoia Analytical- Sacramento <br /> Reporting <br /> Analyte Result Lann Units Dilution Batch Prepared Analyzed Method Note <br /> MW-109(5504379-07)Water Sampled 04/18/0515 00 Received 04/18/05 18 00 <br /> Gasoline Range Organics(C4-C 12) ND 50 ug/l 1 5040250 04/20/05 04/20/05 EPA <br /> 8015B/8021 B <br /> Benzene ND 050 <br /> Toluene ND 050 <br /> Ethylbenzene ND 050 " <br /> Xylenes(total) ND 050 <br />' Methyl tet-butyl ether ND 2 0 <br /> Surrogate 4-BFB(FID) 107% 60-140 " <br /> Surrogate a a a-TFT(PID) 85% 60-140 " <br /> MW-110(S504379-08)Water Sampled 04/18/0516 00 Received 04/18/05 18 00 <br /> Gasoline Range Organics(C4-C12) ND 50 ug/1 1 5040250 04/20/05 04/20/05 EPA <br /> 8015B/8021B <br /> Benzene ND 050 " " <br /> ffi Toluene <br /> hylbe <br /> ND 050 <br /> t050 <br /> hylbenzene ND 0 50 <br /> Xylenes(total) ND 050 <br /> Methyl tert-butyl ether ND 2 0 " <br />' Surrogate 4-BFB(FID) 108% 60-140 n " <br /> Surrogate a a a-TFT(PID) 85% 60-140 <br /> MW-111(5504379-09)Water Sampled 04/18/05 10 53 Received 04/18/05 18 00 <br /> Gasoline Range Organics(C4-C 12) ND 50 ug/1 1 5040250 04/20/05 04/20/05 EPA <br /> 8015E/8021B <br /> Benzene ND 0 50 <br /> Toluene ND 050 " <br /> Ethylhenzene ND 0 50 <br /> Xylenes(total) ND 050 " <br /> Methyl tent-butyl ether ND 2 0 " <br />' Surrogate 4-BFB(FID) 110% 60-140 n <br /> Surrogate a a a-TFT(PID) 86% 60-140 " <br />' Sequoia Analytical-Sacramento 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 <br /> This analytical report must be reproduced in its entirety <br /> Page 5 of 10 <br />