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819 Sinker Ave Ste 8 <br /> Sacramento CA 95834 <br /> 4DSequoia (916)921-9600 <br /> FAX(916)921-0100 <br /> Analytical www sequoialabs com <br /> Gettler-Ryan-Dublin Project Former Unocal 2859,Stockton,CA 5308609 <br /> 6747 Sierra Court,Ste J 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 /> p�yu Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> 4W-9(5308609-10)Water Sampled 08/26/03 10.50 Received.08/28/03 14 30 <br />'urgeable Hydrocarbons ND 50 ug/1 1 3090002 09/02/03 09/02/03 EPA 80 15/8021 <br /> 3enzene ND 050 " " , <br /> toluene ND 050 <br /> Ethylbenzene ND 050 „ <br /> Xylenes(total) ND 050 " <br /> Methyl tert-butyl ether 3 3 2 0 <br /> Surrogate a,a,a-Trifluorotoluene 112% 60-140 " <br /> MW-10(S308609-11)Water Sampled 08/27/0311 45 Received 08/28/03 14 30 <br /> Purgeable Hydrocarbons 72000 50000 ug/l 1000 3090002 09/02/03 09/03/03 EPA 8015/8021 <br /> Benzene <br /> 2800 500 " <br /> Toluene <br /> 17000 500 ' <br /> " <br /> Ethylbenzene 2600 500 „ <br /> Xy (total) 19000 500 " <br /> M tert-butyl ether 3 7 2 0 i 09/02/03 <br /> Surrogate a,a,a-Trifluorotoluene 1029,15 60-140 09/03/03 <br /> MW-11 (5308609-12)Water Sampled 08/27/0312 35 Received 08/28/03 14 30 <br /> Purgeable Hydrocarbons 23000 2500 ug/1 50 3090002 09/02/03 09/02/03 EPA 8015/8021 <br /> Benzene 1100 25 11 <br /> Toluene 120 25 <br /> Ethylbenzene 1700 25 <br /> Xylenes(total) 7600 25 " <br /> Methyl tert-butyl ether 150 100 <br /> Surrogate a,a,a-Trifluorotoluene <br /> 111 % 60-140 <br /> S to Analytical- Sacramento The results in this report apply to the samples analyzed in accordance with the chain of <br /> custody document Unless otherwise staled results are reported on a wet weight basis <br /> This analytical report must be reproduced in its entirety <br /> Page 6 of 20 <br />