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� 1455 McDowell Blvd North,Ste D <br /> Petaluma,CA 94954 <br /> Sequoia (707)792-1865 <br /> FAX(707)792-0342 <br /> Analytical wwwsequotalabs coin <br /> Gettler-Ryan-Dublin Project Tosco <br /> 6747 Sierra Ct,Suite] <br /> Project Number 2701 W March Lane,Stockton Ca Reported Dublin CA,94568 Project Manager Deanna Harding 02/15/01 10 28 <br /> Volatile Organic Compounds by EPA Method 8260B <br /> Sequoia Analytical- Petaluma <br /> Reporting <br /> Ana]yta Result Lima Units Dilution Batch Prepared Analyzed Method Notes <br /> MW-3-BP(P101661-02)Water Sampled 01/24/0108 40 Received 01/25/0115 10 <br /> `Pert-amyl methyl ether ND 500 ug/l 500 1010684 01130101 <br /> 0113010] EPA 82608 <br /> Tert-butyl alcohol ND 10040 <br /> Di-isopropyl ether ND 500 <br /> 1,2-Dtbromoethane(EDB) ND 250 <br /> 1,2-Dichlorocthane ND 250 <br /> Ethanol ND 50000 <br /> Ethyl tert-butyl ether ND 500 " <br /> Methyl tent-butyl ether 15000 250 " <br /> " <br /> Surrogate Dt6romoJluoromethane 99 0% 88-118 „ <br /> Surrogate 11-Dtchloroethane-d4 101 % 81-130 <br /> Surrogate Toluene-d8 994% 84-115 <br /> MW-3-AP(P101661-03)Water Sampled 01124/0110 43 Received 01/25/01 15 10 <br /> T -aND 100 ug/l 100 1010516 01/30/01 01/30/01 EPA 8260B <br /> myl methyl ether <br /> utyl alcohol ND 2000 <br /> D- sopropyl ether ND 100 <br /> 1,2-Dtbromoethane(EDB) ND 50 0 <br /> 50 0 „ <br /> 1,2-Dtchloroethane ND <br /> Ethyl tert-butyl ether ND 100 „ <br /> Methyl tent-butyl ether 4730 500 x „ <br /> Surrogate Dibromofluoromethane 109% 88-118 „ <br /> Surrogate 12-Dtchloroethane-d4 115% 81-130 „ <br /> Surrogate Toluene-d8 101 % 84-115 <br /> CC-BP(P101661-04)Water Sampled 01/24/0108 50 Received 01/25/01 15 10 <br /> Tert-amyl methyl ether ND 4000 ug/l 4000 1010516 01/31/01 01/31/01 EPA 8260B <br /> Teri-butyl alcohol ND 80000 <br /> Di-isopropyl ether ND 4000 <br /> !,2-Dtbromoethane(EDB) ND 2000 <br /> ND 2000 " <br /> 1,2-Dtchloroethane " <br /> Ethyl tert-butyl ether ND 4000 <br /> Methyl tert-butyl ether 166000 2000 <br /> Surrogate DtbromoJluoromethane 103 % 88-118 <br /> " <br /> Surrogate 1,2-Dtchloroethane-d4 108% 81-130 <br /> Surrogate Toluene-d8 1009/0 84-115 <br /> oto Analytical-Petaluma The results to this report apply to the samples analyzed to accordance with the chain of <br /> custody document This analytical report must be reproduced in its entirety <br /> Page 5 of 19 <br />