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404 N Wiget Lane <br /> Sequoia Walnut Crtek.GA 94598 <br /> (M)988-9600 <br /> FAX(925)988-%73 <br /> Analytical """'" u°`a'abs` ' <br /> ttler Ryan,Inc -Dublin Project Tosco <br /> 6747 Sierra Court Suite I Project Number 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 Creek <br /> Reporting <br /> Analyte Result Limit Uruts Dilution Batch Prepared Analyzed Method Notes <br /> MW-5S(W102175-08)Water Sampled 06-Feb-01 10 34 Received 07-Feb-01 16 40 <br /> Ethanol ND 500 ug/l 1 IB13024 14-Feb-01 14-Feb-01 EPA 8260B <br /> tent-Butyl alcohol ND 50 <br /> Methyl tert-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 dibromide ND 20 " <br /> Surrogate Dibromofluoromethane 118% 50-150 " <br /> Surrogate 1,2-Dichloroethane-d4 110% 50-150 " <br /> MW-6D(W102175-09)Water Sampled 06-Feb-01 13 15 Received 07-Feb-01 16 40 <br /> Ethanol ND 500 ugfl 1 IB13024 14-Feb-01 14-Feb-01 EPA 8260B <br /> tert-Butyl alcohol ND 50 <br /> Methyl tert-butyl ether 44 20 " <br /> sopropyl ether ND 20 " <br /> IWyl 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 Dib romofluoromethane 115% 50-150 <br /> Surrogate 1 2-Dichloroethane-l4 103 % 50-150 <br /> MW-6S(W 102175-10)Water Sampled 06-Feb-01 12 40 Received 07-Feb-01 16 40 <br /> Ethanol ND 500 ugll 1 1313024 14-Feb-01 14-Feb-01 EPA S260B <br /> tert-Butyl alcohol ND 50 <br /> Methyl tent-butyl ether 91 20 „ <br /> Di-isopropyl ether ND 20 <br /> Ethyl tert-butyl ether ND 20 <br /> tent-Amyl methyl ether ND 20 <br /> 1,2-Dichloroethane ND 20 <br /> Ethylene dibromide ND 20 " <br /> Surrogate Drbromofluoromethane 119% 50-150 " <br /> Surrogate 1,2-Dichloroethane-d4 115% 50-I50 <br /> Sequoia Analytical -Walnut Creek The results in this report apply to the samples analyzed in accordance with the chain of <br /> custody document Trus analytical report must be reproduced in its entirety <br /> • <br /> Page 4 of 29 <br />