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404 N Wiget Lant <br /> 7• Walnut Creek,CA 9459& <br /> Sequoia (925)988-9600 <br /> FM(925)%$-%7- <br /> Analytical www sequolala*corr <br /> er Ryan,Inc -Dubhn Project Unocal <br /> 6747 Sierra Court Sulte J Project Number Unocal# 1205 Reported <br /> Dubhn CA,94568 Project Manager Deanna L Harding 08-Feb-01 07 55 <br /> Volatile Organic Compounds by EPA Method 8260B <br /> Sequoia Analytical -Walnut Creek <br /> Reporting <br /> Analyte Result Luna Units Dilution Batch Prepared Analyzed Method Notes <br /> MW-1(W 101183-02)Water Sampled 08-Jen-01 11 10 Received 09-.Tan-01 18 15 <br /> Ethanol ND 500 ug4 1 1A16024 18-Jan-01 19-Jan-fll EPA 826013 <br /> tert-Butyl alcohol ND 50 <br /> Methyl tert-butyl ether 29 20 <br /> Di-isopropyl ether ND 20 <br /> Ethyl text-butyl ether ND 20 <br /> tent-Amyl methyl ether ND 20 <br /> 1,2 Dichloroethane ND 20 " <br /> Ethylene dibromide ND 20 <br /> Surrogate Dibromofluorometharie 117% 50-150 " <br /> Surrogate 1,1-Dtchloroed=ed4 114% 50-150 <br /> MW-2(W101183-03)Water Sampled 08-.Ian-01 10 35 Received 09-Jan-01 18 15 <br /> Ethanol ND 500 ug4 1 1A16024 18-Jan-01 18-Jan-01 EPA 9260B <br /> text-Butyl alcohol ND s0 " <br /> hyl tent-butyl ether 28 20 <br /> opropyl ether ND 20 " <br /> yl tett-butyl ether ND 20 <br /> tert Amyl inethyI ether ND 20 <br /> 1,2-Dichloroethane ND 20 <br /> Ethylene dibromide ND 20 <br /> Surrogate Dibromofluoromethane 109% 50-130 <br /> Surrogate 1,1 Dichloroethane-d4 976% 50-150 " <br /> MW-3(W 101183-04)Water Sampled 08-Jan-01 10 05 Received 09-Jan-01 18 15 <br /> Ethanol ND 500 Ug/1 1 l A16024 18-Jan-01 18-Jan-01 EPA 8260B <br /> tert-Butyl alcohol ND 50 " <br /> Methyl text butyl ether ND 20 <br /> Di-isopropyl ether ND 20 " •• " <br /> Ethyl tert-butyl ether ND 20 „ <br /> text Amyl methyl ether ND 20 <br /> 1,2-Dichloroethane ND 20 " <br /> Ethylene dibromide ND 20 " <br /> Surrogate Dibromofluoromethane 112% 50-130 <br /> Surrogate 1,1 Dtchloroethane-d4 986% 50-150 <br /> Spvoia Analytical-Walnut Creep The results in this report apply to the samples analyzed im accordance with the charm of <br /> • custody document This analytical report must be reproduced in its entirety <br /> Page 6 of 14 <br /> r(�i <br />