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819 Striker Avenue,Suite 8 ' <br /> 'uoia Sacramento,CA 95834 <br /> (916)921-9600 <br /> -0100 <br /> Wo Analytical FAX(916)92 <br /> www.sequoialabs.combs.com <br /> EMCON/IT-Sacramento Project: Foothill Landfill,San Joaquin County L <br /> 1433 N.Market Blvd. Project Number. 791289 Reported: <br /> Sacramento CA,95834 Project Manager. Steve Giacomini 01/31/01 17:10 <br /> Volatile Organic Compounds by EPA Method 8260B-Quality Control <br /> Sequoia Analytical-Petaluma <br /> Reporting Spike Source %REC RPD <br /> Analyte Result MDL limit Units Level Result %REC limits RPD Limit Notes <br /> Batch 1010490-EPA 5030 waters <br /> Blank(1010490-BLKI) Prepared&Analyzed:01/22/01 <br /> 1,3,5-Trimethylbenzene ND 0.110 0.500 ug/l ' <br /> 1,2,4-Trimethylbenzene ND 0.110 0.500 <br /> Vinyl acetate ND 1.64 5.00 " <br /> Vinyl chloride ND 0.0600 0.500 " <br /> m,p-Xylene ND 0.210 0.500 , <br /> o-Xylene ND 0.0700 0.500 " <br /> Surrogate:Dibromofluoromethane 4.98 5.00 99.6 88-118 <br /> Surrogate:1,2-Dichloroethane-d4 5.26 5.00 105 81-130 ' <br /> Surrogate:Toluene-d8 4.76 5.00 95.2 84-115 <br /> Surrogate:4-Bromofluorobenzene 5.27 5.00 105 78-124 <br /> Blank(1010490-BLK Prepared&Analyzed:01/23/01 <br /> Acetone ND 1.79 10.0 ug/1 <br /> Acetonitrile ND 19.2 100 " <br /> Acrolein ND 1.85 20.0 ' <br /> Acrylonitrile ND 1.12 20.0 " <br /> Allyl chloride ND 0.980 10.0 " <br /> Benzene ND 0.0500 0.500 <br /> Bromobenzene ND 0.0700 0.500 " <br /> Bromochioromethane ND 0.0500 0.500 <br /> Bromodichloromethane ND 0.0500 0.500 " <br /> Bromoform ND 0.110 0.500 , <br /> Bromomethane ND 0.380 0.500 " <br /> 2-Butanone ND 0.700 5.00 " <br /> n-Butylbenzene ND 0.110 0.500 <br /> sec-Butylbenzene ND 0.0900 0.500 <br /> tert-Butylbenzene ND 0.100 0.500 " <br /> Carbon disulfide ND 1.36 5.00 " <br /> Carbon tetrachloride ND 0.0600 0.500 ' <br /> Chlorobenzene ND 0.0700 0.500 " <br /> Chloroethane ND 0.110 0.500 " <br /> 2-Chloroethylvinyl ether ND 1.36 5.00 <br /> Chloroform ND 0.0700 0.500 " <br /> Chloromethane ND 0.140 0.500 " <br /> Chloroprene ND 4.89 5.00 ' <br /> 2-Chlorotoluene ND 0.110 0.500 " <br /> 4-Chlorotoluene ND 0.120 0.500 " <br /> Sequoia Analytical-Sacramento The results in this report apply to the samples analyzed in accordance with the chain of <br /> custody document. This analytical report must be reproduced in its entirety. <br /> Page 18 of 22' <br />