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r - <br /> 1551 <br /> (D— Sequoia anLrosC,n 940 0 <br /> San Carlps Cq 9go10' <br /> (650)232 9600 <br /> Analytical <br /> PAX(650)232 9G12 <br /> www sequoialabs com <br /> Gettler-Ryan/Geostrategies(1) Project Unocal(4) <br /> 6747 Sierra Court,Suite J Project Number Former Unocal#5098 &Montgmery Ward :ReporiedDublin CA,94568 Project Manager Deanna Harding 0302 12 44 <br /> Volatile 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-15(L203015-18)Water Sampled 03/04/020950 Received 03/05/02 18 25 <br /> Tert-butyl alcohol ND 20 ug/l l 2030017 03/08/02 03/08/02 EPA 8260B <br /> Methyl tert-butyl ether NO r 1 0 <br /> Di-isopropyl ether NO 1 0 „ <br /> Ethyl tert-butyl ether ND 10 <br /> Tert-amyl methyl ether NO 1 0 <br /> Surrogate 1,2-Dichloroethane-d4 973 % 70-130 „ <br /> MW-16(L203015-19)Water Sampled 03/04/02 15 30 Received 03/05/02 18 25 _ <br /> Tert-butyl alcohol NO 20 ug/1 - 1 2030017 03/08/02 03/08/02 EPA 8260B <br /> Methyl tert-butyl ether NO 1 0 <br /> Di-isopropyl ether NO 1 0 " <br /> Ethyl tert-butyl ether NO 10 " <br /> Tert-amyl methyl ether ND 1 0 <br /> Surrogate 12-Dichloroethane-d4 114% 70-130 <br /> MW-17 L203015-20 Water Sampled 03/0310212 10 Received 03/05/02 18 25 <br /> Tert-butyl alcohol ND 20 ug/! 1 2030031 03/14/02 03/14/02 EPA 8260E <br /> Methyl tert-butyl ether NO 1 0 <br /> Di-isopropyl ether NO 1 0 <br /> Ethyl tert-butyl ether NO 1 0 <br /> Tert-amyl methyl ether NO 1 0 „ <br /> Surrogate 1 2-Dichloroethane-d4 103-% 70-130 ,, .- -- <br /> t <br /> MW-18 L203015-21 Water Sampled 03/04/021015 Received 03/05/021825 ' <br /> Tert-butyl1 alcohol -- <br /> h' T �� NDT �20 ug/l 1 2030017 03/08/02 03/08/02 EPA 82608 <br /> Methyl tert-butyl ether NO 1 0 " <br /> Di-isopropyl ether -- — - -----��ND-�- -- -�0 --------- ---�--- ;;- -- -T- ---- ------ -- - -- — --- <br /> Ethyl tert-butyl ether NO 1 0 1, ^ „ <br /> Tert-amyl methyl ether NO 1 0 <br /> ~Surrogate 1,2-Dichloroethane-d4 -_-- - -T 104/ 70-130 s <br /> Sequoia Analytical- San Carlos The results in this report apply io the samples analyzed in accordance with the chain of <br /> cuslody document Tits analytical i eport must be reproduced in its entirety <br /> 1 <br /> Page 73 of 91 ' <br />