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Indu <br /> Road <br /> Sequoia 1551 Carlos <br /> Cal 4070 <br /> San Carlos CA 94070 <br /> (650)232-9600 <br /> FAX Analytical ww.seq oialab9612 <br /> wwtivsequoialabs.com <br /> Gettler-Ryan/Geostralegies(I) Project: Tosco(1) <br /> 6747 Sierra Court,Suite 3 Project Number. i INOCAL SS#11195.LATHROP.CA Reported: <br /> Dublin CA,94568 Project Manager: Deanna Harding 08/28/0107:22 <br /> Total Purgeable Hydrocarbon (C6-C12) by EPA 8015M and BTEXIMTBE by EPA 8021B <br /> Sequoia Analytical - San Carlos <br /> Reporting <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> TB-LB(L108074-01) Water Sampled: 08/10/0) 00.00 Received: 08/10/01 18:55 <br /> Purgeable Hydrocarbons as Gasoline ND 50 ugA 1 1080100 08/23/01 08/23/01 DHS LUFT <br /> Benzene ND 0.50 " <br /> Toluene ND 0.50 " <br /> Ethylbenzene ND 0.50 " <br /> Xylenes(total) ND 0.50 " <br /> Methyl tert-butyl ether ND 5.0 " <br /> Surrogate:a,a,a-Trihuorotoluene 88.8% 70-130 " <br /> MWA (L)08074-02)Water Sampled: 08/10/01 14:55 Received: 08/10/01 18:55 <br /> Purgeable Hydrocarbons as Gasoline ND 50 ug/I 1 1080100 08/23/01 08/23/01 DHS LUFT <br /> Benzene ND 0.50 " <br /> Toluene 1.6 0.50 " <br /> Ethylbenzene ND 0.50 " <br /> Xylenes(total) 1.5 0.50 " <br /> Methyl Cert-butyl ether 1200 200 40 08/24/01 M-04 <br /> Surrogate:a,a,a-Tris luorotoluene 117% 70-130 08123101 <br /> MW-2 (1.108074-03)Water Sampled: 08/10/01 15:35 Received: 08/10/01 18:55 <br /> Purgeable Hydrocarbons as Gasoline ND 50 ug/l 1 1080100 08/23/01 08/24/01 DHS LUFT <br /> Benzene ND 0.50 " <br /> Toluene 1.2 0.50 <br /> Ethylbenzene ND 0.50 " <br /> Xylenes(total) 0.79 0.50 " <br /> Methyl tett-butyl ether 830 50 10 M-04 <br /> Surrogate:a,a,a-Trifluorotoluene 117% 70-130 " <br /> i <br /> E <br /> i <br /> Sequoia Analytical - San Carlos The results in this report apply to the samples analyzed in accordance with the chain of <br /> custody document. This analytical report must be reproduced in its entirety. <br /> Page 2 of 22 <br />