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Sequoia 8 Sinker Ave Ste <br /> Sacramento,CA 458344 <br /> Analytical (916)921-9600 <br /> FAX(916)921A100 <br /> www sequoialabs com <br /> ettler-Ryan-Rancho Cordova Project Former Unocal 2859,Stockton,CA S301507 <br /> 140 Gold Camp Dr,,Ste 170 Project Number N/A Reported <br /> Rancho Cordova CA,95670 Project Manager Geoffrey D Risse 02/05/03 17 48 <br /> Gasoline (2-Methylpentane to 1,2,4-Trimethylbenzene) and BTEX by EPA 8015M and 8021B <br /> Sequoia Analytical- Sacramento <br /> Reportmg <br /> Analyte Result Ltnut Units Dilution Batch Prepared Analyzed Method Notes <br /> NP-1 S301507-04 Water Sampled 01/23/03 09 34 Received 01/23/03 14 25 <br /> Purgeable Hydrocarbons 19000 5000 ug/l 100 3010455 01/30/03 01/30/03 EPA 8015/8021 <br /> Benzene 820 50 <br /> Toluene 3100 50 <br /> Ethylbenzene 820 50 „ <br /> Xylenes(total) 4700 50 " <br /> Methyl tert-butyl ether ND 200 " <br /> Surrogate a aa-Tnfluorotoluene 87% 60-140 „ <br /> oia Analytical- Sacramento The results in this report apply to the samples analyzed 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 4 of 7 <br />