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Gettler-Ryan/Geostrategies(1) Project Tosco(1) <br /> .6747 Sierra Court,Suite 3 - - Project Number- Tosco(Unocal)SS#6981 -- —- -- Reported <br /> -- - <br /> Dublin CA,94568 Project Manager Deanna Harding T 03/22/01 13 29 <br /> Total Purgeable Hydrocarbons (C6-C12), BTEX and MTBby DHS LUFT <br /> E <br /> - - Sequoia Analytical- San Carlos <br /> Reporting <br /> ,rely a Result Lima Units Dilution Batch Prepared Analyzed Method Notes <br /> VW4(L103050-16)Water Sampled 03/0810114-25 Received 03/09/0117 25 <br /> Purgeable Hydrocarbons as Gasoline 12700 1000 ug/l 20 1030062 03/17/01 03/17/01 DHS LUFT P-02 <br /> Benzene <br /> 128 100 " <br /> Toluene ND 100 n " <br /> Etbylbenzene 794 100 <br /> Xylenes(total) 413 too w " <br /> Methyl tert-butyl etber 350 100 <br /> Surrogate a,a,a-Tnfluorotoluene 115% 70-130 " <br /> VW-7(L103050-17)Water Sampled 03/08/011500 Received-03/08/0117-25 <br /> Purgeable Hydrocarbons as Gasoline 34400 5000 ug/1 100 1030064 03/20/01 03/20/01 DHS LUFT P-01 <br /> Benzene 853 500 " It " <br /> Toluene 2750 Soo <br /> Ethylbenzene 394 Soo <br /> Xylenes(total) 8900 50 0 " • <br /> Methyl tert-butyl ether ND 500 " <br /> Surrogate a,a,a-Tnfluorotoluene 108% 70-130 " <br /> i <br /> PTW-1(L103050-18)Water Sampled-03/0710113 33 Received 03/08/0117:25 <br /> Purgeable Hydrocarbons as Gasoline ND 500 ug/l l 1030062 03/17/01 03/17/01 DHS LUF r <br /> Benzene ND 0 500 " <br /> Toluene ND 0 500 <br /> Ethylbenzene ND 0 500 <br /> Xylenes(total) ND 0 500 <br /> Methyl tert-butyl ether ND 500 " <br /> Surrogate a,a,a-Tnfluorotoluene 108% 70-130 " <br /> Sequoia Analytical-San Carlos Me results in this report apply to the samples analyzed to accordance with the chat <br /> Aw <br /> custody document This analytical report must be reproduced in its entirety <br /> Page 7 of 25 <br />