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er-11yan/Geostrategtes(1) Project Tosco(i) <br /> Project Number Tosco(Unocal)SS#6981 R`� <br /> 6747 Sierra Court,Suite J 07/12/4106 51 <br /> Dublin CA,94568 Project M=9w Deanna Harding <br /> Volatile Organic 8 Oxygenated Compounds by EPA Method 8260B <br /> Sequoia AnaReportualytical- San Carlos <br /> gHsieh P�mad Analyzed Method No <br /> Remit L.mut Uwts Ddutm <br /> VW-1(L106220-14)Water Sampled.06/2610113 30 Received 0028/0107.50 <br /> L 1470023 07/05/01 07/05/01 EPA 82608 <br /> Ethanol ND 1000 ug/1 <br /> 1,2-Dibromoethane ND 20 <br /> 1,2-Dwhloroethane ND 2 0 <br /> 20 <br /> Di-isopropyl ether 2 0 <br /> Ethyl Cert-butyl ether ND <br /> Methyl tert-butyl ether ND 20 <br /> Tert-amyl methyl ether ND 20 n " <br /> Tert-butyl alcohol ND 100 <br /> Surrogate 1,2-Dtchloroethane-d4 890% 76-114 <br /> Surrogate Toluene-d8 102% 88-110 <br /> VW-3(L106220-15)Water Sampled 06126/0116-55 Received 0612810107:50 <br /> ND 1000 ug/l 1 1070023 07/05!01 07105/0 i EPA 82508 <br /> q1tomethane ND 20 " <br /> 1,2-Dtchloroethane ND 20 <br /> Di-isopropyl ether ND 20 <br /> Ethyl tert butyl ether ND 20 <br /> Methyl tert-butyl ether 41 20 " <br /> Tert-amyl methyl ether ND 20 <br /> ND loo <br /> Tert-butyl alcohol <br /> Surrogate 1,2-Dichloroethane-d4 952% 76-114 <br /> Surrogate Toluene-d8 103% 88-110 " <br /> `7W-4(L106220-16)Water Sampled 0612710113 40 Received.06128/0107 50 <br /> ND 17000 ugll 1667 1070023 07/05/01 07/05/Ol EPA 8260B <br /> Ethanol <br /> ND 33 <br /> 1,2-Dtbromoethane " <br /> 1,2-Dichioroethane ND 33 <br /> Di-isopropyl ether ND 33 „ <br /> Ethyl tert-butyl ether ND 33 <br /> 30 33 <br /> Methyl tert-butyi ether 330 <br /> Tert-amND 33 <br /> yl methyl ether ND 1733 <br /> Tert-butyl alcohol <br /> 00 <br /> Surrogate 1,2 Dichloroethane-i4 978% 76-114 <br /> Surrogate Toluene-d8 104% 88-110 " <br /> 0 <br /> The results to this report gPP <br /> 1 to the samples analyzed in accordance with the chain of <br /> Y <br /> Sequoia Analytical-San Carlos custody document This analytical report must be reproduced in its entirety <br /> Page 12 of 22 <br />