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819 Str*er Ave Ste 8 <br /> Sequoia Sairatne916)92 -9600 <br /> (916)921-9600 <br /> " W Analytical FAX(916)92 <br /> w,��,>it=♦ s�coin <br /> *Ryan-Dublin Project Former Unocal 2859,Stockton,CA S305466 <br /> Sierra Court,Ste ] Project Number NIA Reported <br /> Dublin CA,94568 Project Manager Deanna L Harding 06/03/03 18 41 <br /> Gasoline(2-Methylpentane to 1,2,4-Trimethylbenzene) and BTEX by EPA 8015M and 8021B <br /> Sequoia Analytical - Sacramiento <br /> - Reportmg <br /> Analyte Result limit Units Dilution Batch Prepared Analyzed Method Notes <br /> MW-18 S305466-19 Water Sampled 05/19/0311 40 Received 0511910317.10 <br /> Purgeable Hydrocarbons ND 50 ug/l 1 3050448 05/27/03 05/28/03 EPA 8015/8021 <br /> Benzene ND 050 <br /> Toluene ND 050 " <br /> Ethylbenzene ND 050 " <br /> Xylenes(total) ND 050 " <br /> Methyl tent-butyl ether ND 20 <br /> Surrogate a,a,a-Trifluorotoluene 93°/a 60-140 <br /> MW-19(S305466-20)Water Sampled 0511910313-55 Received-05/19/03 17 10 <br /> Pwgeable Hydrocarbons ND 50 ug/1 1 3050448 05/27/03 05/28/03 EPA 8015/8021 <br /> Benzene ND 050 1. <br /> " 1. <br /> Toluene ND 050 n 1. " <br /> Ethylbenzene ND 050 <br /> Xylenes(total) ND 050 <br /> Methyl tert-butyl ether ND 20 " <br /> Sate a,a,a-Trifluorotoluene 103% 60-140 " <br /> MV-20(5305466-21)Water Sampled 05/19/03 12.50 Received 05/19/03 17 10 <br /> Purgeable Hydrocarbons ND 50 ug/1 1 3050464 05/28/03 05/28/03 EPA 8015/8021 <br /> Benzene ND 050 <br /> Toluene ND 050 " <br /> Ethylbenzene ND 050 " <br /> Xylenes(total) ND 0 50 ^ " <br /> Methyl tert-butyl ether ND 2 0 <br /> Surrogate a,a,a-Trifluorotoluene 97% 60-140 " <br /> is Analytical -Sacramento The results in this report apply to the samples analysed in accordance with the chain of <br /> custody document Unless otherwise stated results are reported on a wet weight basis <br /> This analytical report must be reproduced in its entirety <br /> Page 9 of 20 <br />