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Sequoia San-CaCA Inrlos OsCAlRoad <br /> 44070 <br /> Analytical (650)232-9610 <br /> FAX(650)232.9812 <br /> www sequoialabs com ' <br /> Gettier-Ryan/Geostrategies(1) Project Unoca](4) <br /> I F <br /> 6747 Sierra Court, Suite J _ Project Number Former Unocal#2859,Stockton Reported <br /> Dublin CA,94568 Project Manager Deanna Harding 05/3010214 17 <br /> Total Purgeable Hydrocarbon (C6-C12) by EPA 8015M and BTEXlMTBE by EPA 8021B <br /> Sequoia Analytical - San Carlos <br /> Reporting <br /> Analyte Result Lunt Units Dilution Batch Prepared Analyzed Method Notes <br /> NP-1 (L205055-22)Water Sampled 05/14/02 15 25 Received 05/14/02 17 50 _ <br /> Purgeable Hydrocarbons as Gasoline 53 r 50 ,-ug/l 1, - 2050059 05/24/02 05/24/02 EPA 8021E P-02 _ <br /> Benzene 053 050 " ^ <br /> Toluene S3 <br /> 0 050 IF " ^ " ^ <br /> Ethylbenzene ND 050 " ^ <br /> Xylenes(total) 086 050 F. <br /> Methyl tert-butyl ether ND 50 ^ F. ^ <br /> Surrogate a,a,a-Trifluorotoluene 963% 70-130 IF IF <br /> IF <br /> TB-LB(L205055-23)Water Sailed 05/13/020000 Received 05/14/02 17 50 _ <br /> Purgeable Hydrocarbons as Gasoline ND 50 ug/I 1 2050056 05/23/02 05/24/02 EPA 8021E <br /> Benzene ND 050 n I. ^ <br /> Toluene ND 050 <br /> Ethylbenzene ND 050 " ^ <br /> Xylenes(total) ND 050 IF <br /> Methyl tert-butyl ether ND 50 n " <br /> Surrogate a,a,a-Trifluorotoluene 963% 70-130 " <br /> Sequoia Analytical -San Carlos The results in this report apply to the samples analyzed in accordance with the chain <br /> custody document This analytical report must be reproduced in its entirety <br /> Page 9 of 20 <br />