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Sequoia SatntCr un$inAve Ste 8 <br /> entoto,CA 95834 <br /> (916)921-9600 <br /> FAX 6 -0 100 <br /> Analytical wwwseguoialabs com <br /> Gettler-Ryan-Dublin Project Fortner Unocal 2859,Stockton,CA S308609 <br /> 6747 Sierra Court,Ste ] Project Number NIA Reported <br /> Dublin CA,94568 Project Manager Deanna L Harding 09/11/03 14 34 <br /> Gasoline (2-Methylpentane to 1,2,4-Trimethylbenzene) and BTEX by EPA 8015M and 8021B <br /> Sequoia Analytical - Sacramento <br /> Reporting <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> MW-12(5308609-13)Water Sampled 08/27/0311 25 Received 08/28/03 14:30 - .- <br /> Purgeable Hydrocarbons ND 50 ug/1 1 3090002 09/03/03 09/03/03 EPA 8015/8021 <br /> Benzene ND 050 " <br /> Toluene ND 0 50 <br /> Ethylbenzene ND 0 50 " <br /> Xylenes(total) ND 0 50 " <br /> Methyl tert-butyl ether ND 2 0 <br /> Surrogate a,a,a-Triuorotoluene 111 % 60-140 " <br /> MW-13(5308609-14)Water Sampled 08/27/03 08 15 Received 08/28/0314 30 - ~ <br /> Purgeable Hydrocarbons ND 50 ug/1 1 3090002 09/03/03 09/03/03 EPA 8015/8021 <br /> Benzene ND 050 0 _ <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-Triuorotoluene 1018% 60-140 " <br /> MW-14(5308609-15)Water Sampled 08/27/03 08 45 Received 08/28/03 14 30 <br /> Purgeable Hydrocarbons ND 50 ug/l 1 3090002 09/02/03 09/02/03 EPA 8015/8021 <br /> Benzene= - β€” ----ND <br /> Toluene ND 0 50 " <br />----- t y enzene----=-- - ---- -------- -ND=--=-0 50 -- - ------ - -- --- - <br /> Xylenes(total) ND 050 " <br /> --MethyI tert-butyl ether -NDβ€” -- β€” 2 0 - <br /> Surrogate a,a,a-Trtfluorotoluene 99% 60-140 " <br /> Sequoia Analytical - Sacramento The results in this report apply to the samples analyzed to 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 7 of 20 <br />