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1551 Industrial Ri)ad <br /> Sequoia San Carlos,CA 94070 <br /> (650)232-9600 <br /> �1� Analytical FAX(65 )232 61 <br /> 0 <br /> ler-Ryan/GeostrateRies(1) Project Unocal(4) L208033 <br /> Sierra Court,Suite J Project Number Former Unocal 40187 Stockton Reported <br /> Dublin CA 94568 Project Manager Deanna Harding 08/29/02 07 10 <br /> Total Purgeable Hyd1 ocarbons (C6-C10) by EPA 8015B modtfed, BTEXM by EPA 8021B <br /> Sequoia Analytical - Morgan Hill <br /> Reporting <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> U-6(L208033-07)Water_Sampled 08/12/02 14 10 Received 08/14/02 19 55 _ <br /> Gasoline Range Organics(C6-C10) ND 50 ugA 1 2H21001 08/21/02 08/22/02 801SBm/8021B <br /> Benzene ND 050 <br /> Toluene 1.8 050 " <br /> Ethylbenzene ND 050 " ^ <br /> Xylenes(total) 2 0 050 " <br /> Methyl tert-butyl ether ND 25 " <br /> Surrogate a,a,a-Trifluorotoluene 107% 70-130 " <br /> U-7(L208033-08)Water Sampled 08/12_/02 16 25 Received 08/14/02 1955 <br /> Gasoline Range Organics(C6-CIO) ND 50 ug/l I 2H21001 48/21!02 08/22/02 8415Bin/8021B <br /> Benzene ND 0 50 " <br /> Toluene I 1 0 50 " <br /> Ethylbenzene ND 050 <br /> Xylenes(total) 15 050 ^ <br /> Methyl tert-butyl ether ND 2 5 ^ <br /> Tate a a a-Triuorotoluene 102% 70-130 " <br /> 208033.09)Water Sampled 08/14/02 11 50 Received 08/14/02 19 55 <br /> Gasoline Range Organics(C6-C10) ND 50 ugfl I, _...—'21121001 08/21/02 08/22/02 8015Bm/8021B <br /> Benzene ND 0 50 ^ <br /> Toluene ND 050 ^ " <br /> Ethylbenzene ND 050 <br /> Xylenes(total) ND 0 50 " <br /> Methyl tert-butyl ether ND 2 5 <br /> Surrogate a,a,a-Triuorotoluene 100% 70-130 " <br /> �ia Analytical - San Carlos The results in this report apply to the samples analyzed in accordance with the chain of <br /> custody document Unless other verse stated results are reported on a wet weight basis <br /> This analytical report must be reproduced in its entirety <br /> Page 14 of 36 <br />