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fr.•+ `1w 819 Striker Avenue, Suite 8 <br />l Sequoia Sacramento, CA 95834 <br />(916)921-9600 <br />AnalyticalFAX (916) www.sequoialabs.com (.l www.sequoialaalabs.com <br />Kleinfelder - Stockton <br />Project: <br />1444 Mariposa <br />S309079 <br />2825 East Myrtle Street <br />Project Number: <br />34202 <br />Reported: <br />Stockton CA, 95205 <br />Project Manager: <br />Francis Bean <br />09/09/03 16:14. <br />Volatile Organic Compounds by EPA Method 8260B - Quality Control <br />Sequoia Analytical - Sacramento'. <br />Reporting Spike Source %REC RPD <br />Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br />Batch 3080408 - EPA 5030B JP/T) <br />Blank (3080408-BLK2) <br />Prepared & Analyzed: 09/04/03 <br />p-Isopropyltoluene <br />ND <br />0.0050 mg/kg <br />Methylene chloride <br />ND <br />0.025 " <br />Methyl tert-butyl ether <br />ND <br />0.0050 " <br />Naphthalene <br />ND <br />0.0050 " <br />n-Propylbenzene <br />ND <br />0.0050 " <br />Styrene <br />ND <br />0.0050 <br />1,1,1,2 -Tetrachloroethane <br />ND <br />0.0050 <br />1,1,2,2 -Tetrachloroethane <br />ND <br />0.0050 " <br />Tetrachioroethene <br />ND <br />0.0050 " <br />Toluene <br />ND <br />0.0050 " <br />1,2,3-Trichiorobenzene <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 />1,1,2 -Trichloroethane <br />. ND <br />0.0050 <br />Trichloroethene <br />ND <br />0.0050 <br />Trichlorofluoromethane <br />ND <br />0.025 " <br />1,2,3-Trichloropropane <br />ND <br />0.0050 <br />1,2;4-Trimethylbenzene <br />ND <br />01.0050 <br />1,3;5-Trimethylbenzerie <br />ND <br />0.0050 " <br />Vinyl chloride <br />ND <br />0.025 " <br />m,p-Xylene <br />ND <br />0.0050. " <br />Ethanol <br />ND <br />0.20 " <br />Tert-amyl methyl ether <br />ND <br />0.0050 <br />Ethyl tert-butyl ether <br />ND <br />0.0050 " <br />Di -isopropyl ether <br />ND <br />0.0050 " <br />Tert-butyl alcohol <br />ND <br />0.050 " <br />Surrogate: DibromoJluoromethane <br />0.0353 <br />0.0500 <br />71 60-140 <br />Surrogate: 1,2 -DCA -d4 <br />-0.0402 <br />0.0500 <br />86 60-140 <br />Surrogate: Toluene -d8 <br />0.0488 <br />0.0500 <br />98 60-140 <br />Surrogate: 4 -BFB <br />0.0485 <br />0.0500 <br />97 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 15 of 17 <br />