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819 Sinker Avenue,Suite 8 <br /> Sequoia Sacramento,CA 95834 <br /> 4D (916)921-9600 <br /> Analytical FAX(916)921-0100 <br /> www sequoialabs com <br /> ier-Ryan-Rancho Cordova Project Unocal 0187,Stockton,CA <br /> lRantcho <br /> 0 Gold Camp Dr,Ste 170 Project Number N/A Reported <br /> Cordova CA,95670 Project Manager David Herzog 03/04/02 16 04 <br /> Total Purgeable Hydrocarbon, BTEX and MTBE by DHS LUFT <br /> Sequoia Analytical - Sacramento <br /> Reporting <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> U-26-31 5 S202310-06 Soil Sam led 02/19/02 10 18 Received 02/21/02 13 05 <br /> Purgeable Hydrocarbons ND 050 mg/kg 1 2020335 02/26/02 02/26/02 DHS LUFT <br /> Benzene ND 00050 <br /> Toluene ND 00050 <br /> Ethylbenzene ND 00050 " <br /> Xylenes(total) ND 00050 " <br /> Methyl tert-butyl ether ND 00050 " <br /> Surrozate a a a-TriRuorotoluene 740% 60-140 " <br /> U-26-51 5(5202310-08)Soil Sampled 02/19/02 10 48 Received 02/21/02 13 05 <br /> Purgeable Hydrocarbons ND 0 50 mg/kg 1 2020335 02/26/02 02/26/02 DHS LUFT <br /> Benzene ND 00050 <br /> Toluene ND 00050 " <br /> Ethylbenzene ND 00050 " <br /> Xylenes(total) ND 00050 " <br /> AMkhyl tert-butyl ether ND 00050 " <br /> roizate a a,a-Trifluorotoluene 750% 60-140 " <br /> U-26-61 (S202310-10)Soil Sampled 02/19/02 11 01 Received 02/21/02 13 05 <br /> Purgeable Hydrocarbons ND 050 mg/kg 1 2020335 02/26/02 02/26/02 DHS LUFT <br /> Benzene ND 00050 " <br /> Toluene ND 00050 " <br /> Ethylbenzene ND 00050 1. to " <br /> Xylenes(total) ND 00050 <br /> Methyl tert-butyl ether ND 00050 " <br /> Surrogate a a a-Trifluorotoluene 810% 60-140 to " <br /> uoia Analytical-Sacramento The results in this report apply to the samples analyzed in accordance with the chain <br /> of custody document This analytical report must be reproduced to its entirety <br /> Page Page 2 of 9 <br />