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Sequoia an [ndustnal Road, <br /> San Carlos CA 94010 <br /> Analytical (650)232-9600 FAX(650)232-96]212 <br /> IW <br /> WWW sequotalabs com, <br /> Gettler-Ryan/Geostrategies(I} Project Unocal(4) f <br /> 6747 Sierra Court, Suite J Project Number Former Unocal#5098&Montgmery Ward Reported <br /> Dublin CA,94568 Project Manager Deanna Harding 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-25D JL203015-34)Water Sampled 03/04/02 12 15 Received 03/05_/_02 1S 25 _ R-05 <br /> Tert-butyl alcohol ND 330 ug/l. 16 67 2030028 03/14/02 03/14/02 EPA 8260B <br /> Methyl tert-butyl ether z ND - 17 <br /> Di-isopropyl ether ND 17 <br /> Ethyl tert-butyl ether ND 17 <br /> Tert-amyl methyl ether ND 17 <br /> Surrogate 1,2-Dichloroethane-d4 101 % 70-130 <br /> MW-AS26(L203015-35) Water Sampled 03/04/02 13 00 Received 03/05/02 18 25 R-05 <br /> Tert-butyl alcohol ND 1000 ug/l 50 ,.. 2030028 03/14/02 03/14/02 EPA 8260B <br /> Methyl tert-butyl ether ND 50 <br /> Di-isopropyl ether ND 50 <br /> Ethyl tert-butyl ether ND 50 " <br /> Tert-amyl methyl ether ND 50 <br /> Surrogate 1,2-Dichloroethane-d4 103% 70-130 " <br /> MW-27 L203015-36 Water Sampled 03/05/02 08 58 Received 03/05/02 18 25 <br /> Tert-butyl alcohol ND 20 ug/I 1 2030031 03/14/02 03/14/02 EPA 826013 <br /> Methyl tert-butyl ether ND 1 0 „ <br /> Di-isopropyl ether ND 1 0 <br /> Ethyl tert-butyl ether ND 1 0 <br /> Teri-amyl methyl ether ND 10 <br /> i <br /> Surrogate i1,2_Dtchloroethane-d4 104/ 70-130 --- <br /> t <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 t <br /> Page 77 of 91 <br />