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Sequoia 819 Striker Avenue,Suite 9 <br /> Sacramento CA 95934 <br /> 4 (916)921-9600 <br /> FAX(916)921-0100 <br /> Analytical www sequoialabs com <br /> Gettler-Ryan-Rancho Cordova Project Former Unocal 0187,Stockton,CA S210535 <br /> 3140 Gold Camp Dr,Ste 170 Project Number N/A Reported <br /> Rancho Cordova CA,95670 Project Manager Geoffrey D Risse 11/12/02 16 29 <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 /> NP-1-111 (5210535-04)Water Sampled 10/21/02 08 43 Received 10/21/02 15 10 HT-04 <br /> Purgeable Hydrocarbons ND 50 ug/1 1 2110108 11/06/02 11/06/02 DHS LUFT <br /> Benzene ND 050 <br /> Toluene ND 0 50 " <br /> Ethylbenzene ND 050 " <br /> Xylenes(total) ND 050 " <br /> Methyl tert-butyl ether ND 2 5 <br /> Surrogate a a,a-Trifluorotoluene 97% 60-140 " <br /> NP-2-22(S210535-05)Water Sampled 10/21/02 07 24 Received 10/21/0215 10 HT-04 <br /> Purgeable Hydrocarbons ND 50 ug/1 1 2110108 11/06/02 11/06/02 DHS LUFT <br /> Benzene ND 050 " " " " " <br /> Toluene ND 0 50 to I. " <br /> Ethylbenzene ND 050 It " " <br /> nes(total) ND 0 50 " <br /> IlWyl tert-butyl ether ND 2 5 _ <br /> Surrogate a a,a-Thfluorotoluene 102% 60-140 " <br /> NP-2-60(S210535-06)Water Sampled 10/21/02 07 34 Received 10/21/02 15 10 <br /> Purgeable Hydrocarbons 5300 2500 ug/1 50 2100387 10/30/02 10/30/02 DHS LUFT <br /> Benzene 1900 25 " <br /> Toluene 67 25 " <br /> Ethylbenzene ND 25 " <br /> Xylenes(total) 73 25 " <br /> Methyl tert-butyl ether ND 120 <br /> Surrogate a,a,a-Trifluorotoluene 97% 60-140 <br /> nota 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 4 of 11 <br />