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W <br />Sequoia <br />iW Analytical <br />819 Striker Ave Ste 8 <br />Sacramento, CA 95834 <br />(916) 921-9600 <br />FAX (916) 921-0100 <br />www.sequoialabs.com <br />Kleinfelder - Stockton <br />Project: <br />Northbrook <br />S308269 <br />2825 East Myrtle Street <br />ProjectNumber: <br />34202.E01 <br />Reported: <br />Stockton CA, 95205 <br />Project Manager: <br />Joe Zilles <br />08/20/03 17:53 <br />Volatile Organic Compounds by EPA Method 8260B <br />Sequoia Analytical - Sacramento <br />Reporting <br />Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Note: <br />Bl -6" (5308269-05) Soil Sampled: 08/13/03 10:40 <br />Received: 08/13/03 16:50 <br />n-Propylbenzene <br />ND <br />0.0050 <br />mg/kg 1 3080244 08/18/03 08/18/03 EPA 8260B <br />Styrene <br />ND <br />0.0050 <br />" <br />1,1,1,2 -Tetrachloroethane <br />ND <br />0.0050 <br />" <br />1,1,2,2 -Tetrachloroethane <br />ND <br />0.0050 <br />" <br />Tetrachloroethene <br />ND <br />0.0050 <br />" <br />Toluene <br />ND <br />0.0050 <br />" <br />1,2,3-Trichlorobenzene <br />ND <br />0.0050 <br />1,2,4-Trichlorobenzene <br />ND <br />0.0050 <br />1,1,1 -Trichloroethane <br />ND <br />0.0050 <br />" <br />1,1,2 -Trichloroethane <br />ND <br />0.0050 <br />Trichloroethene <br />ND <br />0.0050 <br />" <br />Trichlorofluoromethane <br />ND <br />0.025 <br />" <br />1,2,3-Trichloropropane <br />ND <br />0.0050 <br />" <br />1,2,4-Trimethylbenzene <br />ND <br />0.0050 <br />" <br />1,3,5-Trimethylbenzene <br />ND <br />0.0050 <br />" <br />Vinyl chloride <br />ND <br />0.025 <br />" <br />m,p-Xylene <br />ND <br />0.0050 <br />" <br />Ethanol <br />ND <br />0.20 <br />" <br />Tert-amyl methyl ether <br />ND <br />0.0050 <br />" <br />Ethyl tert-butyl ether <br />ND <br />0.0050 <br />" <br />Di -isopropyl ether <br />ND <br />0.0050 <br />" <br />Tert-butyl alcohol <br />ND <br />0.050 <br />" <br />Surrogate: Dibromofluoromethane <br />105 % <br />60-140 <br />Surrogate: 1,2 -DCA -d4 <br />110% <br />60-140 <br />Surrogate: Toluene -d8 <br />97% <br />60-140 <br />Surrogate: 4 -BFB <br />106% <br />60-140 <br />Sequoia Analytical - Sacramento <br />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 19 of 29 <br />