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1551 Industnal Road <br /> Sequoia San Carlos CA 94070 <br /> (650)232 9600 <br /> Analytical FAX(654)232 4612 <br /> �+nvw sequoialabs com <br /> -Ryan/G eostraiegies(1) Project Unocal(4) <br /> 6747 Sierra Court, Suite J Project Number Former Unocal SS#12859 Stockton CA Reported <br /> Dublin CA 94568 Project Manager Deanna Harding 09/06/01 12 14 <br /> Total Pul geable Hydrocal bons (C6-02), BTEX and MTBE by DHS LUFT <br /> Sequoia Analytical - Morgan Hill <br /> Reporting <br /> Analvte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> MW-12 (L108120-13)Niliater Sampled 08/17/01 13 30 Received 08/1710] 1S 55 <br /> Purgeable Hydrocarbons 1300 120 ug/l 25 1H29002 08129/0) 08/29/01 DHS LUFT P-01 <br /> Benzene 18 1 2 " <br /> Toluene 19 1 2 " <br /> Ethylbenzene ND 1 2 " <br /> Xylenes (total) 160 1 2 " <br /> Methyl tert-butyl ether 110 62 " <br /> Surrogate a a,a-Triuoroioluene 118% 70-130 <br /> I%IW-13 (L108120-14)\Iliater S-impled 08/17/01 11 50 Received 08/17/01 18 55 <br /> Purgeable Hydrocarbons ND 50 ug/l I 1H29002 08/29/01 08/29/01 DHS LUFT <br /> Benzene ND 0 50 " <br /> Toluene ND 050 " <br /> Ethylbenzene ND 050 <br /> Xylenes(total) 12 050 " <br /> Met v!ten-butyl ether ND 2 5 " <br /> S to a a a-Trifluorotoluene 938% 70-130 " <br /> Aq'UV-14 (L108120-15)Water Sampled 08/16/01 19 15 Received 08/17/01 18 55 _ <br /> Purgeable Hydrocarbons ND 50 ug/l 1 IH28003 08/28/01 08/28/01 DHS LUFT <br /> Benzene ND 0 50 " <br /> Toluene ND 0 50 " <br /> Ethylbenzene ND 050 " <br /> Xylenes(total) ND 050 <br /> Methyl tent-butyl ether ND 2 5 " <br /> Surrogate a a,a-Trti luorotoluene 102 % 70-130 <br /> SelWa Analytical -San Carlos The results in this report apply to Phe samples anal}red in accordance with the chain of <br /> custody document This analytical report must he reproduced in its emiretj, <br /> Page 9 of 22 <br />