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++ V <br /> Sequoia <br /> 'a qu o i a 444 NLane <br /> J Walnut Creek,,CA CA 94598 <br /> 9600 <br /> Analytical FAX(925) 98& <br /> Gettler Ryan,Inc -Dublin Project Tosco <br /> 6747 Sierra Court Suite 7 Project Number Tosco(Unocal)# 6981 Reported <br /> Dublin CA,94568 Project Manager Deanna L Harding 23-Nov-99 16 42 <br /> Volatile Organic Compounds by EPA Method 8260A <br /> Sequoia Analytical -Walnut Creek <br /> Reporting <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> MW-14(W910568-11)Water Sampled 25-Oct-9914 05 Received 27-Oct-99 13 50 <br /> tert-Butyl alcohol ND 100 ug/1 1 9KO8019 08-Nov-99 08-Nov-99 EPA 8260A <br /> Methyl tert-butyl ether 150 20 " " <br /> Di-isopropyl ether ND 20 " <br /> Ethyl tert-butyl ether ND 20 " <br /> 1,2-DlLhloroethane 11 20 " <br /> tert-Amyl methyl ether ND 20 " <br /> Ethylene dibromide ND 20 <br /> Surrogate Dibromofluoromethane 108% 50-150 " <br /> Surrogate 1,2-Dichloroethane-d4 100% 50-150 " <br /> MW-15(W910568-12)Water Sampled 25-Opt-99 13 40 ReLeived 27-Oct-99 13 50 <br /> tert-Butyl dllohol ND 100 ug/1 I 9KO8019 08-Nov-99 08-Nov-99 EPA 9260A <br /> Methyl tert-butyl ether 72 20 " <br /> Di-isopropyl ether ND 20 " <br /> Ethyl tert-butyl ether ND 20 • <br /> 1 2-D1Lliloroethane ND 20 " <br /> tert-Amyl methyl ether ND 20 " <br /> Ethylene dibromide ND 20 " <br /> i <br /> .Surrogate Dibromofluoroniethane 110% 50-150 " <br /> Surrogate 1,2-Dichloroethmie-d4 106% 50-150 " <br /> MW-16(W910568-13)Water Sampled 25-Oct-99 16 50 Received 27-Oct-99 13 50 <br /> tart-Butyl alcohol ND 200 ug/l 2 9h08014 08-Nov 99 08-Nov-99 EPA 8260A <br /> Methyl tert-liutvl ether 100 40 " " <br /> Di-isopropyl ether ND 40 " <br /> Ethyl cert-butyl ether ND 40 " <br /> 1,2-Diuhloroethane 76 40 " <br /> test-Ainyi methyl ether ND 40 " <br /> 1.tl1y1Lne,dibroiriide ND 40 " <br /> Surrogate Dibrontoflumomethane 108% 50-150 " <br /> Smmiogate 1 2-Dichlotoethune-d4 940% 50-150 " <br /> Sequoia Analytical -Walnut Creek The results in this report apply to the smiplev analyzed to mcordance with the churn <br /> cuvtody document Thts analytical report must be reproduced in i is entire <br /> t�..t_ <br /> +Ue <br /> g ey, rojeAlm <br /> er Page 1 t of 19 <br />