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819 Striker Ave Ste 8 <br /> Sacramento,CA 95834 <br /> Sequa oia (916)921-9600 <br /> ,2NAnalytical FAXwww.sequoialabs.com www.sequoialabs.com <br /> s <br /> Gettler-Ryan-Dublin Project: Fortner Unocal 0187,Stockton,CA S309067 <br /> 6747 Sierra Court,Ste.J Project Number: NIA Reported: <br /> Dublin CA,94568 Project Manager: Deanna L.Harding 09/15/03 16:39 <br /> Volatile Organic Compounds by EPA Method 8260B <br /> Sequoia Analytical - Sacramento <br /> Reporting <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> U-5(S309067-06)Water Sampled:08/29/03 10:50 Received:09/02/03 16:20 <br /> Tert-butyl alcohol ND 5.0 ug/l 1 3090081 09/05/03 09/05/03 EPA 8260B <br /> Methyl tert-butyl ether ND 0.50 <br /> Di-isopropyl ether ND 0.50 <br /> Ethyl tert-butyl ether ND 0.50 " <br /> Tert-amyl methyl ether ND 0.50 " <br /> Surrogate: 1,2-DCA-d4 91 % 60-140 " <br /> U-6(S309067-07)Water Sampled:08/29/03 10:20 Received:09/02/03 16:20 <br /> Tert-butyl alcohol ND 5.0 ug/l 1 3090081 09/05/03 09/05/03 EPA 8260B <br /> Methyl tert-butyl ether ND 0.50 <br /> Di-isopropyl ether ND 0.50 " <br /> Ethyl tert-butyl ether ND 0.50 " <br /> Tert-amyl methyl ether <br /> ND 0.50 <br /> S te: 1,2-DCA-d4 84% 60-140 <br /> [J- S309067-08)Water Sampled:08/29/03 14:04 Received:09/02/03 16:20 <br /> Tert-butyl alcohol ND 5.0 ug/l 1 3090081 09/05/03 09/05/03 EPA 8260B <br /> Methyl tert-butyl ether ND 0.50 <br /> Di-isopropyl ether ND 0.50 <br /> Ethyl tert-butyl ether ND 0.50 " <br /> Tert-amyl rnethyl ether ND 0.50 ' <br /> Surrogate: 1,2-DCA-d4 90% 60-140 " <br /> U-8(5309067-09)Water Sampled:0812910313:36 Received:09/02/03 16:20 <br /> Tert-butyl alcohol ND 5.0 ugA l 3090081 09/05/03 09/05/03 EPA 8260E <br /> Methyl tert-butyl ether ND 0.50 rt <br /> Di-isopropyl ether ND 0.50 <br /> Ethyl tert-butyl ether ND 0.50 <br /> Tert-amyl methyl ether ND 0.50 <br /> Surrogate:1,2-DCA-d4 <br /> 87% 60-140 " <br /> oia Analytical- Sacramento The results in this report apply to the samples analyzed in accordance with the chain of <br /> STIPdocument. Unless otherwise stated,results <br /> custody docu are reported on a wet weight basis. <br /> This analytical report must be reproduced in its entirety. <br /> i <br /> Page 16 of 29 <br />