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oad <br /> Sequoia I','%]Cariou CA 4070 <br /> ■�"' !Y,!] San Cario�CA 94070 <br /> - FAX(650)232 9512 <br /> Analytical `= --_--_ - - - - _ — - ---- _- - `-- -- - '- - � wwq cequoielabccom - <br /> ' -- <br /> Gerlier-Rvan/Geowatevies(I) Protect Tosco(I <br /> 6747 Sierra Court Suite J Protect Number Tosco#15886,Stockton Reported <br /> Dublin CA 94568 Project Manager Deanna Harding 05/20/02 12 25 <br /> -�- =- Volatile-Organic 8 Oxygenated-Gompounds bv-EPA=A7etho&8260B---�— - <br /> Sequoia Analvtical - San Carlos <br /> Reponmg <br /> Analyse Result s Limit -Units- Dilution Batch Prepared Analvzed- Method Notes <br /> 11IW'.1 (L205012-02)Water Sampled 05/03/02 12 35 Recened 05/03/02 16 50 <br /> Ethanol— --- ---- T-- - - -�ND-- --1200—-411 --—2 5---2050009---05!07/02 --05107/02- --EPA b2b0B- - - -- - - <br /> 12-Dibromoethane ND 5 0 <br /> 1 2-Dichloroethane ND 50 <br /> Di-isopropyl ether ND 50 <br /> Ethyl Cert-butyl ether ND 50 <br /> Methvi Cert-but.l ether 300 50 <br /> Ten-amyl methyl ether ND 50 <br /> Ten-butyl alcohol ND 250 <br /> Surrogate 1,2-Dtchlotoeihane-d4 94 2 % 70-130 <br /> Surrogate Toluene-d8 974 % 70-130 " <br /> MW-2(L205012-03)W'ater Samjiled 05/03/02 13 55 ReceiNed 05/03/02 16 50 <br /> Ethanol ND 500 ugli 1 2050009 05/07/02 05/07/02 EPA 8260B <br /> 1,2-Dibromoethane ND 2 0 <br /> 1,2-Dichloroethane ND 2 0 <br /> Di-isopropyl ether ND 2 0 <br /> Ethyl ten-butyl ether ND 2 0 ^ <br /> Methvl teo-butvi ether 28 2 0 <br /> Ter[-amyl methyl ether ND 2 0 <br /> Ten-butyl alcohol ND 100 " <br /> Surrogate 1,2-Dichloroethane-d4 96 6 % 70-130 " <br /> Surrogate Toluene-d8 99 0% 70-130 <br /> MW-3(L20501.2-04)Water Sampled 05/03/02 13 15 Received 05103102_16 50 _ <br /> Ethanol ND 25000 ug/l i0 2050009 05/07/02 05107/02. EPA 82608 <br /> 1,2-Dibromoethane ND 100 " <br /> 1,2-Dichloroethane ND 100 " <br /> Di-isopropyl ether ND 100 " <br /> Ethyl tert-butyl ether ND 100 " <br /> Methyl tert-butvi ether 6500 100 " <br /> Ten-amyl methyl ether ND 100 " <br /> Tert-butyl alcohol ND 5000 " <br /> Surrogate 1,2-Dichloroethane-d4 918% 70-130 " <br /> Surrogate Toluene-d8 98 6 % 70-130 ' <br /> Sequoia Analytical - San Carlos The results in this report apph to rhe samples anolvzed in accordance ti,ith the chain <br /> custody document This anoli7tical report must be reproduced in its entirerv, <br /> Page 9 of 23 <br />