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nal RoadSequoia Son Carlos <br /> CA 94070 <br /> Analytical (650)232-9 <br /> 600, <br /> FAX(650)232-9612 <br /> www sequoialabs eom om -1 <br /> Gettier-RyanlGeostrategies(1) Project Unoca](4) <br /> n <br /> 6747 Sierra Court Suite J Prosect Number Former Unocal 552859.5iockton,CA Reported <br /> Dublin CA 94568 Project Manager Deanna Harding 09/06/01 12 14 <br /> Total Put geable Hyd1 ocal bons (C6-C]2), BTEX and MTBE by DHS LUFT <br /> Sequoia Analytical - Morgan H1ll <br /> Reporting <br /> Analvte Result Linut Units Dilution Batch Prepared Anaiyzed Method Notes <br /> ) AAI-3 (L108120-04)Water Sampled_08/17/01 08 58 Received 08/17/01 18 55 - <br /> Purgeable Hydrocarbons ND - 50 ug/1 - 1 I H29003 08/29/01 08/29/01 DHS LUFT <br /> Benzene ND 0 50 <br /> Toluene ND 050 " <br /> Ethylbenzene ND 0 50 " <br /> Xylenes(total) ND 0 50 " <br /> Methyl tert-buts]ether ND 2 5 " <br /> Surrogate a,a a-Trtfluorotoluene 980% 70-130 " <br /> NIAV-4 (1.108120-05)NA7.9ter Sampled 08116101 14 35 Received 08/17/01 18 55 <br /> Purgeable Hydrocarbons ND 50 ugA 1 1H28004 08128101 08/28/01 DHS LUFT <br /> Benzene ND 050 " <br /> Toluene ND 050 <br /> Ethylbenzene ND 050 " <br /> Xylenes(total) ND 050 <br /> Methyl tert-butyl ether ND 25 - - <br /> Surrogate a,a,a-Trifluorololuene 881 % 70-130 " <br /> NIW-5(L]08120-06)Water Sampled 08/16/01 13 55 Received 08/17/01 18 55 -_ <br /> Purgeable Hydrocarbons ND 50 ugA 1 1H29003 0812910) 08/29/01 DHS LUFT <br /> Benzene ND 050 " <br /> Toluene ND 0 50 " <br /> Ethylbenzene ND 050 " <br /> —Xylenes(total) _ ND- X050-- -- <br /> Methyl ten-butyl ether ND 2 5 <br /> Surrogate a,a,a-Trifluorotoluene -� -T�_ �T T 98 7%� 70730 <br /> 4 Sequoia Analytical - San Carlos The results in this report apply to the samples analyzed in accordance with the chain o <br /> custody document This analytical report must be reproduced in its entirety <br /> Page 6 of 22 <br />