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a— ) Sequoia 404 N wA 945% <br /> Walnut(perk,CA 94598 <br /> Analytical (90988-9600 <br /> v4WFAX(916)988-9673 � <br /> www w uoialabs em <br /> Gettler Ryan,Inc -Dublin Project Unocal <br /> 6747 Sierra Court Suite J Project Number Unocal 4 2859 Reported <br /> Dublin CA,94568 Project Manager Deanna L Harding 07-Dec-01 08 14 <br /> Volatile Organic Compounds by EPA Method 8260B <br /> Sequoia Analytical -Walnut Creek <br /> Reporting <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> _MW-17(W]11332-17)Water Sampled 16-Nov-01 13 16 Received:20-Nov-01 12 15 <br /> tert-Butyl alcohol ND 20 ug/1 _1 1K27026 27-Nov-01 27-Nov-01 EPA 82608 <br /> Methyl tent-butyl ether(MTBE) ND 20 <br /> Di-isopropyl ether ND 20 " <br /> Ethyl tent-butyl ether ND 20 <br /> tert-Amyl methyl ether ND 20 <br /> 1,2-Dichloroethane 120 20 <br /> Ethylene dibromide ND 20 <br /> Surrogate Dibromofluoromethane 98% 50-150 " <br /> Surrogate 1,2-Dichloroethane-d4 117% 50-150 " <br /> MW-18(W111332-18)Water Sampled 16-Nov-0114-00 Received 20-Nov-01 12 15 <br /> tert-Butyl alcohol ND 20 ug/1 1 1K27026 27-Nov-01 27-Nov-01 EPA 8260B <br /> Methyl tert-butyl ether(MTBE) ND 2 0 " <br /> Di-isopropyl ether ND 20 " <br /> Ethyl tert-butyl ether ND 20 " <br /> ten-Amyl methyl ether ND 20 <br /> 1,2-Dichloroethane 11 20 <br /> Ethylene dibromide ND 20 <br /> Surrogate Dibromoflunromethane 104% 50-150 <br /> Surrogate 1,2-Dtch1oroethane-d4 120% 50-150 " <br /> MW-19(WI 11332-12)Water Sampled 16-Nov-01 11 45 Received 20-Nov-61_112_15 _ <br />--tert-Butyl alcohol__• ND . 20—ug/1 1 1K27026=27__N_ov_-0127_Nov-01�EPA 8260B _ <br /> Methyl tert-butyl ether(MTBE) ND 20 " <br />=--Di-isopropyl ether—.---T ----- ND=-- ­20 <br /> O <br /> Ethyl tert-butyl ether ND 20 <br /> tert-Amyl methyl ether ND 20 " <br /> 1,2-Dichloroethnne 23 20 <br /> Ethylene dibromide ND 20 " <br /> Surrogate Dibromofluoromethane 102% 50-150 <br /> Surrogate 1,2-Dtchloroethane-d4 121 % 50-150 " <br /> Sequoia Analytical -Walnut Creek The results to this report apply to the samples analyzed in accordance with the ch <br /> custody document This analytical report must be reproduced in its Inti <br /> 11 of 19 <br />