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404 N Wiget Lane <br /> Walnut Geek.CA 94598 <br /> Sequoia FAX(925)988-9600 <br /> Analytical www sequoWabs corn <br /> Gettler Ryan,Inc -Dublin Project Unocal •� <br /> 6747 Sierra Court Suite J Project Number Former Unocal#4409 Reported <br /> Dublin CA,94568 Project Manager Deanna L Haiduig 26-Oct-00 18 31 <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-1 (WO10244-02)Water Sampled 10-Oct-0011 04 Received 10-Oct-00 15 40 <br /> tert Butyl alcohol ND 50 ug/l 1 0J19027 19-Oct-00 20-Oct-00 EPA 8260B <br /> Methyl tert-butyl ether ND 20 " <br /> Di-isopropyl ether ND 20 " <br /> Ethyl tert butyl ether ND 20 <br /> tert Amyl methyl ether ND 20 " <br /> 1,2 Dichloroethane ND 20 " <br /> Ethylene dibromide ND 20 " <br /> Surrogate DtbrMofluoromed mte 102% 50-150 " <br /> Surrogate 1,2Dchloroethmted4 980% 50-150 " <br /> MW-2(W010244-03)Water Sampled lo-0ct-0010 25 Received 10-Oct-0015 40 <br /> tert-Butyl alcohol ND 50 u0 1 0119027 1943ct-00 2043ct-00 EPA MOB <br /> Methyl tert butyl ether ND 20 " <br /> Di-isopropyl ether ND 20 <br /> Ethyl tmt-butyl ether ND 20 <br /> text-Amyl methyl ether ND 20 " <br /> 1,2-Dichlorvethane ND 20 " <br /> Ethylene dibromide ND 20 <br /> Surrogate Lhbromofluoromethane 102% 50-150 " <br /> Surrogate 1,2-Dechloroed meed4 100% 50-150 " <br /> MW-3(W010244-04)Water Sampled 10-Oct-001140 Received- 10-Oct-001540 <br /> text-Butyl alcohol ND 50 ug/l 1 OJ19027 20-Oct-00 204:)d-00 EPA 8260B <br /> Methyl tert-butyl ether 59 20 <br /> Di-isopropyl ether ND 20 " <br /> Ethyl text-butyl ether ND 20 <br /> tert-Amyl methyl ether ND 20 " <br /> 1,2-Dichloroethane ND 20 " <br /> Ethylene dibromide ND 20 " <br /> Surrogate Dtbromofluoromedme 960% 50-150 " <br /> Surrogate 1,2 Dichloroethaned4 960% 50-150 <br /> Sequoia Ai]*ucal-Wahmt Creep T Iw results in thus report apply to the saWles analysed in awordmwe with the chop <br /> custody dociontm T7as analyncal report must be reproduced to its enurefflW <br /> Page 4 of 9 <br />