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kl � <br /> 1551 industrial Road <br /> Sequoia San Carlos CA94070 <br /> Analytical (650)232-9600 <br /> FAX(650)232-9612 �'-- <br /> www sequoialabs com <br /> Gettler-Ryan/Geostrategies(I) Project Tosco(l) <br /> 6747 Sierra Court, Suite J Project Number Tosco#01205(Circle K),Lathrop,CA Reported <br /> Dublin CA, 94568 Project Manager Deanna Harding 02/14/02 12 09 <br /> Total Purgeable Hydrocarbon (C6-C12) by EPA 8015M and BTEX/MTBE by EPA 8021B <br /> Sequoia Analytical - San Carlos <br /> Reporting <br /> Anaiyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> MW-3 (L201127-04)Water Sampled 01/29/02 11 35 Received 01/30/02 08 55 <br /> Purgeable Hydrocarbons as Gasoline 2900 500 ug/1 10 2020020 02/06/02 02/06/02 EPA 8021B P-02 <br /> Benzene 19 5 0 " <br /> Toluene ND 5 D " <br /> Ethylbenzene 140 5 0 " <br /> Xylenes(total) 37 5 Q " <br /> Methyl tert-butyl ether ND 50 " <br /> Surrogate a a a-Trtfluorotoluene 110% 70-130 " <br /> MW-4 (L201127-05)Water Sampled 01/29/02 12 08 Received 01/30/02 08 55 <br /> Purgeable Hydrocarbons as Gasoline 1000 250 ugli 5 2020020 02/06/02 02/06/02 EPA 8021B P-02 <br /> Benzene 11 2 5 " <br /> Toluene ND 2 5 <br /> Ethylbenzene 38 2 5 <br /> Xylenes(total) 14 2 5 <br /> Methyl tert-butyl ether ND 25 <br /> Surrogate a a a-Trifluorotoluene 121 % 70-130 " <br /> MW-5 (L2.01127-06)Water__Sampled 01/29/0215 10 Received 01/30/02 08 55 _ <br /> Purgeable Hydrocarbons as Gasoline 15000 2000 ugll 40 2020020 02/06/02 02!06102 EPA 8021B P-02 <br /> Benzene 150 20 <br /> Toluene 620 20 <br /> )Ethylbenzene 1000 20 <br /> Xylenes(total) 4000 20 ^ <br /> Methyl tent-butyl ether ND 200 <br /> Surrogate a a a-Trifluorotoluene 966% 70-130 <br /> Sequoia Analytical - San Carlos The i esults in this report apply to the samples analyzed in accordance with the chain <br /> custodv document This analytical r epoi t must be reproduced in its entirety <br /> Page 3 of 11 <br />