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seCilUla 1551 Industrial Ro <br /> San Carlos Cq 9ad <br /> ,�D) 4270 ' <br /> Analytical (656)232 9610 <br /> FAX(656)232 9612 <br /> WWW sequoialabs cam <br /> Gettler-Ryan/Geostrategies(I) Project Unoca](4) y <br /> 6747 Sierra Court, Suite J Project Number Former Unocal#5098&Mantgmery Ward Reported <br /> Dublin CA,94568 Project Manager Deanna/-larding 03/26/02 12:44: (� <br /> Volatile Organic Oxygenated Compounds by EPA Method 8260B <br /> Sequoia Analytical - San Carlos <br /> Reporting <br /> Analyte - - Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> MW-1 (1.,203015-02)Water Sampled 03/05/02 12 15 Received 03/05/02 18 25 _ R-05 <br /> Tert-butyl alcohol .ND 140 ug/1 7 14 2030028 03/34/02 03/I4/02 EPA 8260B <br /> Methyl tert-butyl ether - ND- - 7 1 <br /> Di-isopropyl ether ND 7 1 <br /> Ethyl tert-butyl ether ND 7 1 „ <br /> Tert-amyl methyl ether ND 7 1 <br /> Surrogate 1 2-Dichloroethane-d4 958% 70-130 <br /> MW-2 1,203015-03 Water Sampled 03/05/02 13 15 Received 03/05/02 18 25 R-05 <br /> Teri-butyl alcohol ND 200 ug/1 10 2030028 03/14/02 03/14/02 EPA 8260B <br /> Methyl tert-butyl ether ND to <br /> Di-isopropyl ether ND - 10 <br /> Ethyl tert-butyl ether ND 10 " <br /> Tert-amyl methyl ether ND 10 <br /> Surrogate 1 2-Dichloroethane-d4 105% 70-130 <br /> 119W-3 L203015-04 Water Sampled 03/05/02 12 10 Received 03/05/02 18 25 <br /> 'Pert-butyl alcohol 22 20 ug/1 1 2030028 03/14/02 03/14/02 EPA 8260B <br /> Methyl tert-butyl ether ND 10 <br /> Di-isopropyl ether ND 1 0 " <br /> Ethyl tert-butyl ether ND 1 0 „ <br /> Tert-amyl methyl ether ND 1 0 " <br /> .Su?rogate_1 2-Dichloroethane-d4 97 4 <br /> _ MW-4 L203015-05 Water Sam led 03/05/02 13 18 Received 03/05/02 18 25 _ _ _ R_05 <br /> Tert-butyl alcohol ND 40 ug/l 2 2030028 03/14/02 03/14/02 EPA 826013 <br /> Methyl tert-butyl ether -- --- -_ _ _ _ �-ND- __2 0 =- <br /> Di-isopropyl ether ND 2 0 <br /> Ethyl tert-butyl ether ND 2 D <br /> Tert-amyl methyl ether ND 2 0 , <br /> Surrogate 1,2-Dichloroethane-d4 103% 70-130 <br /> Sequoia Analytical - San Carlos 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 69 of 91 <br />