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' 819 Sinker Ave Ste 8 <br /> Sequoia Sacramento CA95834 <br /> 92 <br /> (916)921 4600 <br /> FAX 2 1 00Analytical www scquoial-ibs cam <br /> ' Geological Technics,Inc Project Cardoza 5312195 <br /> 1101 7th Street Project Number 662 2 Reported <br /> ' Modesto CA,95354 Project Manager Joseph Angulo 12/24/03 17 08 <br /> GasolinelBTEXIOxygenates by EPA method 8260B <br /> Sequoia Analytical _ Sacramento <br /> ' Reporting <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> ' CP112D31 W(S312195-05)Water Sampled 12/03/03 09 30 Received 12/05/03 16 55 <br /> Tert-butyl alcohol ND 50 ug/I 1 3120094 12/08/03 12/09/03 EPA 82608 <br /> Methyl tent-butyl ether ND 050 " <br /> Di-isopropyl ether ND 050 " <br /> ' Ethyl tert-butyl ether ND 050 " <br /> Tert-amyl methyl ether ND 050 <br /> 1,2-Dibromoethane(EDB) ND 050 " <br /> ' Benzene ND 050 <br /> Ethylbenzene ND 050 <br /> Toluene ND 050 " <br /> Xylenes(total) ND 050 " <br /> Gasoline Range Organics- - - ND — - -- 50 -- <br /> Surrogate Toluene-d8 105% 60-140 <br /> Surrogate 4-BFB 104% 60-140 " <br /> Surrogate 1 2-DCA-d4 108% 60-140 " <br /> CPT2D45W(5312195-06)Water Sampled 12/03/03 09 55 Received 12/05/03 16 55 <br /> Tert-butyl alcohol ND 50 ug/1 l 3120094 12/08/03 12/09/03 EPA 8260B <br /> Methyl terl-butyl ether ND 050 " <br /> ' Di-isopropyl ether ND 050 <br /> Ethyl tert-butyl ether ND 050 <br /> Tert-amyl methyl ether ND 050 " <br /> ' 1,2-Dibromoethane(EDB) ND 050 <br /> Benzene ND 050 " <br /> Ethylbenzene ND 050 " <br /> Toluene ND 050 " <br /> Xylenes(total) ND 050 <br /> Gasoline Range Organics ND 50 " <br /> Surrogate Toluene-d8 102% 60-140 " <br /> ' Surrogate 4-BFB 99% 60-140 <br /> Surrogate 1,2-DCA-d4 107% 60-140 <br /> ' Sequoia Analytical-Sacramento The results in this ieporl apply to the samples analyzed in accordance with the chain of <br /> custody document Unless otherwise staled,results are ieported on a wet weight basis <br /> This analytical report must be reproduced in its entii ety <br /> ' Page 13 of 31 <br />