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819 Stnl er Ave Ste 8 <br /> Sacramento CA 95834 <br /> e kioia (916)921-9600 <br /> FAX(915)921-0100 <br /> Ant. h t6 c 41 www sequo slabs com <br /> (,r-Ryan- Pt tahuna Project Tosco 11192,Stockton,CA 5212235 <br /> � Project Number NIA Reported <br /> l <br /> 0N McDowell Blvd Ste B_ 02/05/03 11 52 <br /> Petaluma CA 94954 Project Mar►ager led Douglas <br /> Volatile Organic Compounds by EPA Method 8260B <br /> Sequoia Analytical- SacraMento <br /> Reporting <br /> Analyte Result Limit Units Dilution B,ttcb Ptkpared Analyzed Method Notes <br /> CPT2-75 S212235-01 Water Sam led 12/04/02 12 50 Received 12/06/02 09 00 <br /> Tert-butyl alcohol ND 100 ug/1 t 21202 7 12 17/02 12/17/02 EPA 8260B <br /> Methyl tert-butyl ether <br /> 20 20 ' , <br /> Di-isopropyl ether ND 2 0 }} <br /> Ethyl tert-butyl ether ND 2 0 <br /> Tert-amyl methyl ether ND <br /> 20 <br /> Ethanol ND 500 <br /> 20 <br /> 1,2-Dichloroethane ND , <br /> 1 2-Dtbramoethane(EDB) <br /> ND 20 <br /> Surrogate 12-DCA-d4 <br /> 108% 60-140 „ <br /> CPT2-101 5212235-02 Water Sampled 12/04/02 13 20 Received 12/06/02 09 00 <br /> Tert-butyl alcohol ND 100 ug/l 1 212027 1'17102 12!17102 EPA 8260B <br /> 20 <br /> Methyl tett-butyl ether ND ,. <br /> ND 20 <br /> Di-isopropyl ether <br /> 20 <br /> Ethyl tett-butyl ether ND , <br /> ' <br /> T -amND 20 <br /> yl methyl ether <br /> of <br /> ND SOD <br /> 1 ichloroethane ND 20 <br /> " <br /> 1,2-131bromoethane(END 20 <br /> DB) n <br /> Surrogate 1 2-DCA-d4 100% 60-140 <br /> CPT2-120 5212235-03 Water Sampled 12/04/02 14 05 Received 12/06/02 09 00 <br /> ND 100 ugll 1 21202-57 12'17!02 12!17102 EPA 8260B <br /> Tett-butyl alcohol <br /> Methyl tert-butyl ether ND 2 0 <br /> Di-isopropyl ether ND 2 0 <br /> ND 20 <br /> Ethyl tert-butyl ether „ <br /> ND 20 <br /> Tert-amyl methyl ether <br /> Ethanol ND 500 " <br /> 1,2-Dtchloroethane ND 2 0 <br /> ND 20 <br /> 1 2-Dtbromoethane(EDB) <br /> Surrogate 12-DCA-d4 98% 60-140 <br /> ora Analytical- Sacrarrte nto The results to his report applt to th, vaniples analyzed in accordance with the chain of <br /> custody document Utiles,otherwise,fated results are reported on a wet weight bases <br /> This analytical report nwu t h, reproarteed in its entirety <br /> Page 5 of 14 <br />