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' Sequoia industrial Road <br /> San <br /> Carlos CA 94070 <br /> Analytical (650)232 9600 <br /> FAX(650)232 9612 <br />' www sequotalabs com <br /> ettler-Ryan/Geostrategies(I) Project Unocal(4) <br /> �7&crra Court,Suite j ProjectNumber Fortner Unocal#5098& Montgmery Ward Reported <br /> uCA,94568 Project Manager Deanna Harding 03/26/02 12 44 <br /> Volatlle Organic Oxygenated Compounds by EPA Method 8260B <br /> Sequoia Analytical - San Carlos <br /> Reporting <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> MW-12(L203015-114)Water Sampled 03/04/02 13 55 Received 03/05/02 18 25 <br /> Tert-butyl alcohol ND 20 ug/i 1 2030028 03/14/02 03/14/02 EPA 8260B <br /> Methyl tert-butyl ether ND 1 0 „ <br /> Di-isopropyl ether ND 1 0 <br /> Ethyl tert-butyl ether ND 1 0 <br /> Tert-amyl methyl ether ND 1 0 <br /> Surrogate 112-Dichloroethane-d4 960% 70-130 <br /> MW-13 L203015-15 Nater Sampled 03/041020941 Received 03/05/02 18 25 <br /> Tert-butyl alcohol ND 20 ug/1 1 2030031 03/14/02 03/14/02 EPA 8260E <br />,Methyl tert-butyl ether 1 4 1 0 „ <br /> Di-isopropyl ether ND 1 0 <br /> Ethyl tert-butyl ether ND 1 0 <br /> Tert-amyl methyl ether ND 1 0 <br /> Surrogate 1,2-Dichloroethane-d4 103 % 70-130 <br /> MW-14 L203015-16 Water Sam led 03/041020902 Received 03/05/02 18 25 <br /> Wutyl alcohol ND 20 ug/1 1 2030017 03/08/02 03/08/02 EPA 8260B <br /> 1 tert-butyl ether ND 1 0 <br /> Di-isopropyl ether ND 1 0 „ <br />(Ihyl'er-butyletheND 1 0rt-amyl mthyl ether ND 1 0urrogate 1,2-Drchloroethane-d4 117% 70-130 „ <br /> W-14A L203015-17 Water Sampled 03/04/02 09 10 Received 03/05/02 IS 25 <br /> ert-butyl alcohol ND 20 ug/l 1 2030017 03/08/02 03/08/02 EPA 8260B <br /> Methyl tert-butyl ether ND 1 0 „ <br /> crt-arnyl <br /> -isopropyl ether ND 1 0 <br /> hy]tert-butyl ether ND 1 0 <br /> methyl ether ND 1 0 <br />�urrogate 1 2-Drchloroethane-d4 100% 70-130 „ <br /> I <br /> is Analytical - San Carlos The results to this report apply to the samples analyzed in accordance with the chain of <br /> custody document This analytical report must be reproduced in its entirety <br /> I <br />' Page 72 of 91 <br />