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Sequoia 8i9 Straker Avenue Suite 8 <br /> Sacramento CA 95834 <br /> 4 41 (916)921-9600 <br /> FAX(916)921-0100 <br /> � Analytical www sequoialabs tom <br /> GettIer-Ryan-Rancho Cordova Project Former Unocal 2859, Stockton,CA S209471 <br /> 3140 Gold Camp Dr,Ste 170 Project Number NIA Reported <br /> Rancho Cordova CA,95670 Pr4lect Manager Geoffrey D Risse 10/08/02 12 21 <br /> Total Purgeable Hydrocarbon, BTEX and MTBE by DHS LUFT <br /> Sequoia Analytical- Sacramento <br /> Reportns <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> MW-2(5209471-01)Water Sampled 09/20/02 09 37 Received 09/20/02 15 25 <br /> Purgeable Hydrocarbons 5000 2000 ug/l 40 2100065 10/03/02 10/04/02 DHS LUFT <br /> Benzene 270 20 " " " <br /> Toluene 300 20 " <br /> Ethylbenzene 570 20 " <br /> Xylenes(total) 1200 20 " <br /> Methyl tert-butyl ether ND 100 " <br /> Surrogate a,a a-Triuorotoluene 110% 60-140 <br /> MWA0(5209471-02)Water Sampled 09/20/02 09 28 Received 09/20/02 15 25 <br /> Purgeable Hydrocarbons 110000 20000 ugll 400 2100065 10/03/02 10/04/02 DHS LLJFT <br /> Benzene 8800 200 " <br /> Toluene 27000 200 " <br /> Ethylbenzene 3500 200 " <br /> es(total) 23000 200 <br /> yl tert-butyl ether 64 25 10 10/04/02 <br /> Surrogate a,a,a-Trifluorotoluene 116% 60-140 <br /> MW-11 (S209471-03)Water Sampled.09/20/02 09 45 Received 09/20/02 15 25 <br /> Purgeable Hydrocarbons 31000 10000 ug/I 200 2100065 10/03/02 10/04/02 DHS LUFT <br /> Benzene 680 10 20 10/04/02 " <br /> 'T'oluene 190 10 1. " <br /> Ethylbenzene 2000 100 200 10/04/02 " <br /> Xylenes(total) 10000 100 1. 1. " <br /> Methyl tert-butyl ether 530 50 20 10/04/02 " <br /> Surrogate a a a-Tr fluorotoluene 103 % 60-140 " <br /> IlWoia Analytical- Sacramento The results in this report apply to the samples analyzed in accordance with the chain of <br /> custody document This analytical report must be reproduced in its entirety <br /> Page 3 of 6 <br />