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Road <br /> 'Analytical <br /> 1551 nCaTIO ustrial 4070 <br /> San Carlos CA 94470 <br /> Analytical (650)232-9600 <br /> FAX(650) a12 <br /> %vvw sequoialabs bs com <br /> Gettler-Ryan/Geostrategies(1) Project Unocal(4) L208033 <br /> 6747 Sierra Court. Suite 1 Prosect Number Former Unocal#0187 Stockton Reported <br /> Dublin CA,94568 Project Manager Deanna Harding 08/29/02 07 10 <br /> Total Purgeable Hydrocarbons (C6-00) by EPA 8015B modified, BTEXM by EPA 8021B <br /> Sequoia Analytical - Morgan Hill <br /> Reporting <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> U-21 (L208033-22)Water Sampled 08/13/02 15 20 Received 08/14/02 19 55 <br /> Gasoline Range Organics(C6-CIO) 210 50 ug/l I 2H21001 08/21/02 08/21/02 80)5Bm/8021B HC-21 <br /> Benzene - 62 050 <br /> Toluene 055 050 " <br /> Ethylbenzene 073 050 " <br /> Xylenes(total) 063 050 " <br /> Methyl tert-butyl ether 13 25 " <br /> Surrogate a,a,o-Trtfluorotoluene 973% 70-130 " <br /> U-22 (L208033-23)Water Sampled 08/13/02 11 07 Received 08/I4/02 19 55 -- <br /> Gasoline Range Organics(C6-C10) ND 50 ug/l 1 2H21003 08/21/02 08/21/02 8015Bm/802]B <br /> Benzene ND 050 <br /> Toluene ND 050 ^ ^ <br /> Ethylbenzene ND 050 <br /> Xylenes(total) ND 050 ^ <br /> Methyl tert-butyl ether ND 25 " <br /> Surrogate a a,a-Triuorotoluene 119% +70-130 . <br /> U-23(1-208033-24)Water Sampled 08/13/02 11 53 Received 08/14/02 19_55 <br /> Gasoline Range Organics(C6-C10) ND 50 ug/l 1 21-121003 08/21/02 08/21/02 8015Bm/8021B <br /> Benzene ND 050 <br /> Toluene ND 050 <br /> Ethylbenzene ND 0 50 " - " <br /> Xylenes(total) ND 050 <br />—Methyl tert-butyl ether— --ND 2 5 ----„— ”—T —" -- ^-- ----^- ------ - <br /> �Surrogate-g,a,a-Truorotoluene —___ 107% _ 70-130T- <br /> Sequoia Analytical - San Carlos The results in this report apply to the samples analyzed in accordance with the charas o <br /> custody document Unless otherwise staled,results are reported on a wel weight basis <br /> This analytical report must be reproduced in its entirety <br /> Page 19 of 36 <br />