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- \ Sequoia • • 819 Striker Ave Ste8 <br /> Sacram®to,CA 95834 <br /> TAW Analytical (916)921-9600 <br /> FAX(916)921-0100 <br /> www.sequoialabs.eom <br /> RNC Environmental LLC Project:Schmidt UST INVESTIGATION 5504150 <br /> 9746 Parktree Way Project Number.- <br /> Elk Grove CA,95624 Reported: <br /> Project Manager:Robert A.Nicholson 04/20/05 18:50 <br /> GasolineXBTEX\Oxygenates by EPA method 8260B <br /> Sequoia Analytical- Sacramento <br /> Reporting <br /> Analyte Result Limit Units Dilution Batch Postured Analyzed Method Note <br /> Schmidt B-I-A(S504150-01)Soil Sampled:04/06/0500:00 Received:04/06/0511:50 <br /> Tert-butyl alcohol ND 0.050 m^ ^ ^ ^ <br /> g/kg 1 5040204 04/15/05 04/15/05 EPA 8260B <br /> Methyl tett-butyl ether ND 0.0050 <br /> Di-isopropyl ether ND 0.0050 <br /> Ethyl tcrt-butyl ether ND 0.0050 <br /> Tert-amyl methyl ether ND 0.0050 '1 ^ <br /> Benzene ND 0.0050 <br /> Ethylbenzene ND 0.0050 ^ ^ <br /> Toluene ND 0.0050 " <br /> Xylenes(total) ND 0.010 <br /> Gasoline Range Organics(C4-Cl2) ND 0.50 <br /> Surrogate:1,2-DCA-d4 105% 60-140 '• ^ •• ,• <br /> Surrogate:Toluene-& 105% 60-140 <br /> Surrogate:4-BFB 110% 60-140 <br /> Schmidt B-2-A(5504150-02)Soil Sampled:04106/0500:00 Received:04/06/05 11:50 <br /> ' Tert-butyl alcohol ND 0.050 mg/kg 1 5040204 04/15/05 04/15/05 EPA 8260B <br /> Methyl tert-butyl ether ND 0.0050 ^ <br /> Di-isopropyl ether ND 0.0050 <br /> Ethyl tert-butyl ether ND 0.0050 <br /> Tert-amyl methyl ether ND 0.0050 <br /> Benzene ND 0.0050 <br /> Ethylbenzene ND 0.0050 <br /> Toluene ND 0.0050 " <br /> Xylenes(total) ND 0.010 <br /> Gasoline Range Organics(C4-C12) ND 0.50 <br /> Surrogate:1,2-DC4-4 82% 60-140 •• ^ •• „ <br /> Surrogate:Toluene-8 106% 60-140 II ,• <br /> Surrogate:4-BFB 100% 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 on a wet weight basis. <br /> This analytical report must be reproduced in its entirety. <br /> ' Page 4 of 8 <br />