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819 Striker Ave Ste 8 <br /> Sequoia Sacramento C 9 <br /> (916)922 96001 9640 <br /> Analytical wwseqFAX(916)921-0100 <br /> om <br /> www sequotalabs coin <br /> • <br /> Geological Technics,Inc Project Cardoza 5312120 <br /> 1101 7th Street Project Number 662 2 Reported <br /> ' Modesto CA,95354 Project Manager Joseph Angulo 01/23/04 17 37 <br /> Gasoline\BTEXIOxygenates by EPA method 8260B <br /> Sequoia Analytical - Sacramento <br /> ' Repotting <br /> Analyte Result Limit Units Dilution Balch Prepared Analyzed Method Notes <br /> CPT1D30(5312120-06REf)Soil Sampled 12/01/03 14 35 Received 12/03/03 15 15 <br /> Methyl tent-butyl ether 030 0 025 mg/kg 5 3120170 12/16/03 12/18/03 EPA 826013 HT-RA <br /> Surrogate 1,2-DCA-d4 114% 60-140 <br /> Surrogate Toluene-d8 94% 60-140 <br /> Surrogate 4-BFB 700% 60-140 <br /> CPT/D35(5312120-07)Soil Sampled 12/01/03 14 40 Received 12/03/03 15 15 <br /> ' Tert-butyl alcohol 0 081 0 050 mg/kg 1 3120170 12/14/03 12/14/03 EPA 8260E <br /> Di-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 /> asoline Range Organics ND 1 0 " <br /> 111111111111Wstniogate 1 2-DCA-d4 101% 60-140 " <br /> Surrogate Toluene-d8 112% 60-140 <br /> ' Surrogate 4-BF3 109% 60-140 <br /> CPT1D35(S312120-07RE1)Soil Sampled 12/01/03 14 40 Received 12/03/03 15 15 <br /> Methyl tent-butyl ether 023 0 025 mg/kg 5 3120170 12/16/03 12/19/03 EPA 8260B HT-RA <br /> ' Surrogate 12-DCA-d4 111 % 60-140 " <br /> Suri agate Toluene-d8 97% 60-140 <br /> Surrogate 4-BF8 97% 60-740 <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 on a wet weight basis <br /> This analytical report must be reproduced rn its entirety <br /> Page 6 of 25 <br />