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819 Striker Ave Ste 8 <br /> Sequoia Sacramento CA 95834 <br /> (916)921 9600 <br /> 10 C- DAnalytical FAX(916)9216100 <br /> � www sequwalabs corn <br /> Geological Technics,Inc Project Cardoza 5312120 <br /> 1 101 7th Street Project Number 662 2 Reported <br /> Modesto CA,95354 Project Manager Joseph Angulo 01/23/04 17 37 <br /> GasolmOBTEX1Oxygenates by EPA method 8260B <br /> ' Sequoia Analytical - Sacramento <br /> Reporting <br /> Analyte Result lamlt Units Dilution Batch Prepared Analyzed Method Notes <br /> CPTID73W(5312120-19)Water Sampled 12/02/03 11 10- Received 12/03/03 15 15 <br /> Tert-butyl alcohol ND 5 0 ug/1 1 3120094 12108!63 12/08/03 EPA 8260B <br /> Methyl tert-butyl ether 092 050 " <br /> Di-isopropyl ether ND 050 <br /> ' Ethyl tent-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 106% 60-140 <br /> Surrogate 4-BFB 100% 60-740 <br /> Surrogate 1 1-DCA-4`4 111 % 60-740 <br /> PT5D20(S312120-20)Soil Sampled 12/02/03 13 55 Received 12/03/03 15 15 HT-04 <br /> Tert-butyl alcohol ND 0 050 mglkg 1 3120170 12/16/03 12/18/03 EPA 8260B <br /> ' Methyl tert-butyl ether ND 00050 Dl-isopropyl ether ND 00050 <br /> Ethyl tert-butyl ether ND 00050 <br /> Tert-amyl methyl ether ND 00050 " <br /> Benzene ND 00050 <br /> Ethylbenzene ND 00050 <br /> Toluene ND 00050 <br /> Xylenes(total) ND 0 010 <br /> ' Gasoline Range Organics ND 1 0 ry <br /> Surrogate 1,1-DCA-d4 I11 % 60-140 " <br /> Surrogate Toluene-d8 92% 60-140 <br /> ' Surrogate 4-BFB 98% 60-140 " <br /> Sequoia Analytical -Sacramento The results in this report apply to the samples analyzed in accordance with the chain of <br /> custody document Unless otherwise stated results are reported an a wel weight basis <br /> This analytical report must be reproduced in its entirety <br /> Page 13 of 25 <br />