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819 Striker Avenue Suite 8 <br /> Sacramento CA 95834 <br /> Sequoia (916)921-9600 <br /> IDFAX(9 t 6)921-0100 <br /> Analytical www sequoialabs com <br /> Gettler-Ryan-Rancho Cordova Project Unocal 0187,Stockton,CA S207242 <br /> Project Number NIA Reported <br /> 3140 Gold Camp Dr,Ste 170 07/30/02 16 41 <br /> Rancho Cordova CA,95670 Project Manager David Herzog <br /> Total Purgeable Hydrocarbon, BTEX and MTBE by DHS LUFT <br /> Sequoia Analytical- Sacramento <br /> Reporting <br /> Analyte Result Limit Umts Dilution Batch Prepared Analyzed Method Notes <br /> U-10(5207242-07)Water Sampled 07/19/02 06 52 Received 07/19/02 14 14 <br /> Purgeable Hydrocarbons ND 50 ug/l 1 2070254 07/24/02 07/24/02 DHS LUFT <br /> 0 50 <br /> Benzene ND <br /> Toluene ND 0 50 " <br /> Ethylbenzene ND 050 <br /> Xylenes(total) ND 0 50 „ <br /> Methyl tert-butyl ether ND 25 <br /> 94% 60-140 <br /> Surrogate a,a a-Triuorotoluene <br /> • <br /> nota Analytical-Sacramento <br /> The results in this report apply to the samples analyzed in accordance with the chain of <br /> custody document This analytical report rntzs[be reproduced in its entirety <br /> ,per Page 5 of 10 <br /> �6d' <br />