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RixLd <br /> Sequoia an lodnsin�4070 <br /> 45�1San Carlos CA 94070 <br /> (650)232-9600 <br /> Analytical <br /> FAX(650)232-9612 <br /> www sequoialabs com <br /> Gettler-Ryan/Geostrategies(1) Project Unocal(4) <br /> 6747 Sierra Court,Suite J Project Number Former Unocal#2859,Stockton Reported <br /> Dublin CA,94568 Project Manager Deanna Harding 05/30/02 14 17 <br /> Total Purgeable Hydrocarbon (C6-C12) by EPA 8015M and BTEX/MTBE by EPA 8021B <br /> Sequoia Analytical - San Carlos <br /> Reporting <br /> Analyte Result Lirnit Units Dilution Batch Prepared Analyzed Method Notes <br /> MW-16(1.205055-16)Water Sampled 05/14/02 12 45 Received 05/14/02 17 50 <br /> Purgeable Hydrocarbons as Gasoline ND - 50 ugll 1 2050059 05/24/02 _ 05/24/02 EPA 8021B <br /> ND u 0 50 „ n -„-^ <br /> Benzene " <br /> Toluene ND 050 " <br /> Ethylbenzene ND 050 ^ <br /> Xylenes(total) ND 050 <br /> Methyl tert-butyl ether ND 5 0 <br /> Surrogate a,a,a-Trtfluorotoluene 9.58% 70-130 " <br /> MW-17 L205055-17 Water Sam led 05/13/02 11 15 Received 05/14/02 17 50 <br /> Purgeable Hydrocarbons as Gasoline 65 50 ugA 1 2050057 05/23/02 05/23/02 EPA 8021B P-02 <br /> Benzene ND 050 " <br /> Toluene 15 050 n ^ <br /> Ethylbenzene ND - 050 <br /> Xylenes(total) 2 0 050 " <br /> Methyl tert-butyl ether ND 5 0 n n n n ^ <br /> Surrogate a a,a-Triuorotoluene 975% 70-130 <br /> MW-18 L205055-1$ Water Sampled 05/131021200 Received 05/14/02 17 50 <br /> Purgeable Hydrocarbons as Gasoline ND 50 ug/l 1 2050057 05/23/02 05/23/02 EPA 8021E <br /> Benzene ND _ -050 <br /> Toluene ND 050 <br />�Ethylbenzene ND 0 50 — <br /> Xylenes(total) ND 050 " ^ <br />--Methyl tert-butyl ether— ND` 5 <br />..--Surrogate a,a,a_Trifluorotoluene ---- — ----- --- 955% _ _ 70-130__ <br /> Sequoia Analytical- San Carlos The results m this report apply to the samples analyzed in accordance with the chain o <br /> custody document This analytical report must be reproduced in its entirety <br /> Page 7 of 20 <br />