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404 N Wlget Lane <br /> 15) <br /> Sequoia Walnut Creek,CA 94598 <br /> -m%p Analytical 1925)988-96 <br /> FAX(925)988-967373 <br /> 00 <br /> Ask <br /> tiler Ryan,Inc -Dublin Project Unocal <br /> 6747 Sierra Court Suite J Project Number Unocal#4409 Reported <br /> Dublin CA,94569 Project Manager Deanna L Harding 17-Jan4O 09 02 <br /> Volatile Organic Compounds by EPA Method 8260A <br /> Sequoia Analytical -Walnut Creek <br /> Reporting <br /> Analyte Result Lumt Units Dilution Batch Prepared Analyzed Method Notes <br /> MW-1 (WO01085-02)Water Sampled 05,Jan-0014 40 Received 06-Jan-00 08 55 <br /> tent-Butyl alcohol ND 100 ug/1 I OAI I OI I 10-Jan-00 10-Jan-00 EPA 8260A <br /> Methyl tert-butyl ether ND 20 ^ ^ <br /> DI-isopropyl ether ND 20 " ^ <br /> Ethyl tert-butyl ether ND 20 <br /> 1,2-Dichloroethane ND 20 <br /> tertAmyl methyl ether ND 20 " <br /> Ethylene dibromide ND 20 " <br /> Surrogate Dibromofluoromethane 106% 50-150 " <br /> Surrogate 1,2-Dichloroethane-d4 102% 50-150 " <br /> MW-2(W001085-03)Water Sampled 05-Jan-0015 35 Received 06-Jan-00 08 55 <br /> tert-Butyl alcohol ND 100 ugll 1 0A11011 10-Jan-00 10-Jan-00 EPA 8260A <br /> Methyl tert-butyl ether ND 20 " » <br /> Di-isopropvl ether ND 20 " <br /> Y'4 <br /> tert-butyl ether ND 20 " <br /> ND 20 <br /> " <br /> ODichloToethane <br /> Amyl methyl ether ND 20 " - <br /> Ethylene dibromide ND 20 " <br /> Surrogate Dibromofluoromethane 104 % 50-150 " <br /> Surrogate I,Z Dichloroethane-d4 980% 50-150 " ^ <br /> MW-3(WO01085-04)Water Sampled 05-Jan-0015 20 Received 06-Jan-00 08 55 <br /> tert-Butyl alcohol ND 100 ug/1 1 0AII011 10-Jan-00 10-Ian-00 EPA 8260A <br /> Methyl tert-butyl ether 30 20 ^ <br /> Di-isopropyl ether ND 20 » <br /> Ethyl tert-butyl ether ND 20 <br /> 1,2-Dichloroethane ND 20 " <br /> tert-Amyl methyl ether ND 20 <br /> Ethylene dibromide ND 20 <br /> Surrogate Dibromofluoromethane 106% 50-150 " <br /> Surrogate 1,1-Dichloroethane-d4 102 % 50-150 " <br /> Uwa Analytical-Walnut Creek The results in the report appty m the samples analyzed i n accordance with the chain of <br /> custody document Tins analytical report must be reproduced titstr entirely <br /> 7amn emp,Laboratory virector <br /> Page 4 of 8 <br />