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!• W <br /> 404 N W Set Lane <br /> Sequoia Walnut Creek CA 94598 <br /> -9600 <br /> (925)988-9600 <br /> 4(D FAX(925)988-9673 <br /> ( Analytical <br /> vvww uolaWx tAm <br /> ler Ryan,Inc -Dublin Project Tosco <br /> 6747 Sierra Court Suite 7 ProjectNumber Tosco#5886 Reported <br /> Dublin CA,94568 Project Manager Deanna L Harding 28-Feb-01 07 25 <br /> Volatile Organic Compounds by EPA Method 8260B <br /> Sequoia Analytical -Walnut Creel;: <br /> Reporting <br /> Analyte Result Lunit Units Dilution Batch Prepared Analyzed Method Notes <br /> MW-10I(W102175 20)Water Sampled 05-Feb-01 14 00 Received 07-Feb-01 16 40 <br /> Ethanol ND 500 ug/l 1 1B13024 14-Feb-01 14-Feb-01 EPA 8266E <br /> tent-Butyl alcohol ND 50 <br /> Methyl tent-butyl ether ND 20 „ <br /> Di-isopropyl ether ND 20 <br /> Ethyl tert-butyl ether ND 20 „ <br /> tert-Amyl methyl ether ND 20 <br /> 1,2-Dichloroethane ND 20 <br /> Ethylene dibronude ND 20 <br /> Surrogate Dibromofluoromethane 123% 50-150 " <br /> Surrogate 12-Dichloroethane-d4 114% 50-150 <br /> I'NIW-10D(W 102175-21)Water Sampled 05-Feb-01 13 30 Received 07-Feb-01 16 40 <br /> Ethanol ND 500 ug/1 1 1B13624 14-Feb-01 14-Feb-01 EPA 8260$ <br /> tert-Butyl alcohol ND 50 " <br /> Methyl tent-butyl ether ND 20 <br /> Aftopropyl ether ND 20 " <br /> IW tert-butyl ether ND 20 <br /> tert-Amyl methyl ether ND 20 <br /> 1,2-Dichloroethane ND 20 <br /> Ethylene dibromide ND 20 <br /> Surrogate Dibromofluoromethane 114% 50-150 i! „ <br /> Surrogate 1,2-Dichloroethaned4 994% 50-150 <br /> Sequoia Analytical-Walnut Creek The results in 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 8 of 29 <br />