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Sequoia 404 N ,CA Lane Walnut Creek,CA 94598 4 (925)988-9600 ID Analytical FAX (925)988-9673 Ir- Gettler Ryan,Inc -Dublin Project Unocal 6747 Sierra Court Suite J Project Number Unocal 0 0187 Reported Dublin CA,94568 Project Manager Deanna L Harding 09-Mar-00 10 44 Volatile Organic Compounds by EPA Method 8260A Sequoia Analytical -Walnut Creek Reporting Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes NP-1-22(W002567-1 1)Water Sampled 23-Feb-00 14 01 Received 24-Feb-0013 05 R-05 Ethanol ND 2500 ug/1 5 0008023 07-Mar-00 07-Mar-00 EPA 8260A tent-Butyl alcohol 2000 500 Methyl tert-butyl ether ND 10 " Di-isopropyl ether ND 10 " Ethyl tert-butyl ether ND 10 tert-Amyl methyl ether 70 10 " Surrogate Dibromofluoromethane 108% 50-150 " Surrogate 1 2-Dwhloroethane-d4 108% 50-150 " NP-1-65 (WO02567-12)Water Sampled 23-Feb-0014 51 Received 24-Feb-00 13 05 R-05 Ethanol ND 2500 ug/1 5 0008023 07-Mar-00 07-Mar-00 EPA 8260A tert-Butyl alcohol ND 500 Methyl tert-butyl ether ND 10 Di-isopropyl ether ND 10 " butyl ether ND 10 „ t yl methyl ether ND 10 Surrogate Dibromofluoromethane 106% 50-150 " Surrogate 1,2-Dichloroethane-d4 104% 50-150 NP-1-111 (W002567-13)Water Sampled 23-Feb-00 13 31 Received 24-Feb-0013 05 Ethanol ND 500 ug/1 1 0008023 07-Mar-00 08-Mar-00 EPA 8260A tert-Butyl alcohol ND 100 " Methyl tert-butyl ether ND 20 Di-isopropyl ether ND 20 Ethyl tert-butyl ether ND 20 tert-Amyl methyl ether ND 20 " Surrogate Dibromofluoromethane 102% 50-150 Surrogate 1,2-Dichloroethane-d4 102% 50-150 " 5�ta Analytical -Walnut Creek The results in this report apply to the samples analyzed in accordance u Ith the chain of custody document 77us analytical report must be reproduced in its entirety Page 11 of 22