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1551 Industnal Road <br /> /�j� Sequoia San Carlos CA 94010 <br /> ''-�`����'"'�� (650)232-9600 <br /> Analytical - wFAX(650)232-9612 <br /> ww wuoialabs com <br /> Gettler-Ryan/Geostrateptes(1) Project Unoca](4) <br /> 6747 Sierra Court. Suite J Prosect Number Unocal SS#15098 Stockton CA Reported <br /> Dublin CA 94568 - Prosect Manager Deanna Harding 01/01/0211 05 <br /> "Volatile Organic Oxygenated Compounds by EPA Method 8260B- - - - <br />__ µ -� -Sequoia Analytical - San Carlos - - - - <br /> Reporting <br /> Analvte Result Limit Units Dilution 13aich Prepared Analyzed Method Notes <br /> NIW-22S(L]12030-27)Water Sampled 12/03/01 08 13 Received 12104101 17 50 <br /> 12-Dtbromoethane(EDB) --- -- ----ND- --1 0-- ugA-- — 1---1120032---12107!01 --12107101---EPA 8260E------ <br /> 12-Dichloroethane ND 10 <br /> Benzene ND 10 <br /> Toluene ND 10 <br /> Ethylbenzene ND 10 " <br /> Xvienes(total) ND 10 " <br /> Methyl ten-butyl ether ND 1 0 <br /> Di-isopropyl ether ND 1 0 " <br /> Ten-butyl alcohol ND 20 <br /> Ethyl ten-butyl ether ND 10 <br /> Ten-arnyl methyl ether ND 10 <br /> Surrogate 1,2-Dichloroethane-d4 108% 70-130 " <br /> Surrogate Toluene-d8 980% 70-130 " <br /> Surrogate 4-BFB - - 101% 70-130 <br /> MW-22D(L112030-28)Water Sampled 12/03/010915 Received 12104101 17 50 <br /> 1,2-Dibromoethane(EDB) ND 1 0 ug/l 1 1120032 12/07/01 17107/01 EPA 8260B <br /> 12-Dichloroethane ND 10 <br /> Benzene 1.6 10 <br /> Toluene_ ND 10 <br />_- Ethylbenzene ---�-0- <br /> Xylenes(total) _ ND 10 <br /> Methyl tert-butyl ether ND 10 -- <br /> Di-isopropyl ether _ - -ND - _1 0 <br /> Tert-butyl alcohol ND 20 " <br /> Ethyl tert-butyl ether ND 1 0 " <br /> Tert-amyl methyl ether ND 10 " <br /> Surrogate 1,2-Dichloroethane-d4 952% 70-130 " <br /> Surrogate Toluene-d8 122% 70-130 " <br /> Surrogate 4-BFB 98 4% 70-130 " <br /> Sequoia Analytical- San Carlos The results in this report apply to the samples analyzed in accordance with the chain <br /> custody document This analytical report must be reproduced in its enureq, <br /> i <br /> Page 22 of 34 <br />