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1 <br />Sequoia <br />TQ0F Analytical _ <br />819 Striker Avenue, Suite 8 <br />Sacramento, CA 95834 J <br />(916) 921-9600 <br />FAX (916) 921-0100 <br />www.sequoialabs.com t <br />Kleinfelder - Stocktor <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 />J <br />J <br />Batch 3080408 - EPA 5030B (P/T] <br />Laboratory Control Sample (3080408 -BSI) <br />Prepared & Analyzed: 08/29/03 <br />Benzene <br />0.0566 <br />0.0050 <br />mg/kg 0.0500 <br />113 <br />70-130 <br />Chlorobenzene <br />1,1-Dichloroethene <br />0.0583 <br />0.0536 <br />0.0050 <br />0.0050 <br />0.0500 <br />0.0500 <br />117 <br />107 <br />70-130 <br />70-130 <br />Toluene <br />0.0597 <br />0.0050 <br />0.0500 <br />119 <br />70-130 <br />97 <br />Trichloroethene <br />0.0537 <br />0.0050 <br />0.0500 <br />107 <br />70-130 <br />0.0050 <br />Surrogate: DibromoJluoromethane <br />0.0504 <br />70-130 <br />0.0500 <br />101 <br />60-140 <br />Toluene <br />Surrogate: 1,2 -DCA -d4 <br />0.0518 <br />0.0500 <br />0.0500 <br />104 <br />60-140 <br />Surrogate: Toluene -d8 <br />0.0570 <br />0.0470 <br />0.0500 <br />114 <br />60-140 <br />70-130 <br />Surrogate: 4 -BFB <br />0.0557 <br />0.0500 <br />I11 <br />60-140 <br />0.0500 <br />93 <br />J <br />J <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. l <br />eIP Page 16 of 17 <br />Laboratory Control Sample (3080408-BS2) <br />Prepared & Analyzed: 09/04/03 <br />Benzene <br />0.0494 <br />0.0050 <br />mg/kg 0.0500 <br />99 <br />70-130 <br />Chlorobenzene <br />0.0486 <br />0.0050 <br />0.0500 <br />97 <br />70-130 <br />IJ-Dichloroethene <br />0.0484 <br />0.0050 <br />0.0500 <br />97 <br />70-130 <br />Toluene <br />0.0487 <br />0.0050 <br />0.0500 <br />97 <br />70-130 <br />Trichloroethene <br />0.0470 <br />0.0050 <br />0.0500 <br />94 <br />70-130 <br />Surrogate: Dibromohuoromethane <br />0.0464 <br />0.0500 <br />93 <br />60-140 <br />Surrogate: 1,2 -DCA -d4 <br />0.0482 <br />0.0500 <br />96 <br />60-140 <br />Surrogate: Toluene -d8 <br />0.0455 <br />0.0500 <br />91 <br />60-140 <br />Surrogate: 4 -BFB <br />0.0482 <br />0.0500 <br />96 <br />60-140 <br />Laboratory Control `;ample Dup (3080408-BSD1) <br />Prepared & Analyzed: 09/04/03 <br />��!! <br />Benzene <br />0.0552 <br />0.0050 <br />mg/kg 0.0500 <br />110 <br />70-130 <br />3 <br />200 <br />Chlorobenzene <br />0.0536 <br />0.0050 <br />0.0500 <br />107 <br />70-130 <br />8 <br />200 <br />1, 1 -Dichloroethene <br />0.0541 <br />0.0050 <br />0.0500 <br />108 <br />70-130 <br />0.9 <br />200 <br />Toluene <br />0.0534 <br />0.0050 <br />0.0500 <br />107 <br />70-130 <br />11 <br />200 <br />Trichloroethene <br />0.0502 <br />0.0050 <br />0.0500 <br />100 <br />70-130 <br />7 <br />200 <br />Surrogate: Dib,omo luoromethane <br />0.0519 <br />0.0500 <br />104 <br />60-140 <br />Surrogate: 1,2 -DCA -d4 <br />0.0535 <br />0.0500 <br />107 <br />60-140 <br />Surrogate: Toluene -d8 <br />0.0505 <br />0.0500 <br />101 <br />60-140 <br />1 <br />J <br />Surrogate: 4 -BFB <br />0.0549 <br />0.0500 <br />110 <br />60-140 <br />J <br />J <br />J <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. l <br />eIP Page 16 of 17 <br />