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•? .Ir rf1 <br /> M <br /> Gettler-Ryan/Geostrategies(1) Project Tosco(1) <br /> 6747 Sierra Court,Suite J Project Number Unocal Circle K SS#1205,Lathrop,CA Reported <br /> Dublin CA,94568 Project Manager Deanna Harding 05/l0/O1 15 16 <br /> Volatile Organic 8 Oxygenated Compounds by EPA Method 8260B <br /> Sequoia Analytical- San Carlos <br /> ReportiR& Notes <br /> Analyte <br /> Result Limit Units Dlution Batch L'repiiied Analyzed Method <br /> MW-7(L104181-08)Water Sampled 04/26/011405 Received 04/26/0117 35 <br /> Ethanol ND 12500 ugll 125 1040099 44/27/01 04/27/01 EPA 8260E <br /> " <br /> 1,2-Dihromoethane ND 250 <br /> 1,2-Dtchloroethane ND 250 „ <br /> 25 0 <br /> Di-isopropyl ether ND » <br /> Ethyl tert-butyl ether ND 250 <br /> Methyl tent-butyl ether ND 250 „ <br /> 25 0 „ » <br /> Tent-amyl methyl ether ND <br /> 1250 " <br /> Tett-butyl alcohol ND „ <br /> Surrogate 1,2-Dtchloroethane-d4 952 % 76-114 <br /> Surrogate Toluene-d8 104 % 88-110 <br /> MW-8(L104181-09)Water Sampled 04/26/01 19 30 Received 04/26/0117 35 <br /> 18ol ND 1000 UO <br /> 1040099 04/30/01 04/30/01 EPA 82608 <br /> ibromoethane ND 200 „ <br /> 1,2-Dichloroethane ND 200 <br /> Di-isopropyl ether ND 200 <br /> Ethyl tert-butyl ether ND 200 „ <br /> Methyl tent-butyl ether ND 200 „ <br /> Tert-amyl methyl ether ND 200 „ <br /> Tert-butyl alcohol ND 100 " <br /> Surrogate 12-Dtchloroethane-d4 912% 76-114 " <br /> Surrogate Toluene-d8 103% 88-110 " <br /> MW-9(L104181-10)Water Sampled 04/2610111 15 Received 04/26/0117 35 <br /> i 25 1040099 04/27/01 04/27/01 EPA 8260B <br /> Ethanol ND 1250 ugfl <br /> " <br /> 1,2-Dtbromoethane ND 250 <br /> 1,2-Dichloroethane ND 250 <br /> Di-isopropyl ether ND 250 <br /> Ethyl tett-butyl ether ND 250 <br /> 2 50 » <br /> Methyl tett-butyl ether ND <br /> Tert-amyl methyl ether ND 250 <br /> 125 „ <br /> Tert-butyl alcohol ND „ <br /> Surrogate 1,2-Dtchloroethane-d4 874% 76-114 » <br /> Surrogate Toluene-d8 108% 88-110 <br /> Sequoia 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 /> Page 8of16 <br />