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e ®la 819 Striker Avenue,Suite 8 <br /> Sacramento,CA 95834 <br /> 41� (916)921-9600 <br /> Analytical vwvFAX(916)921-0100 <br /> w.sequoialabs.com <br /> EMCON/IT-Sacramento Project: Foothill Landfill,San Joaquin County <br /> 1433 N.Market Blvd. Project Number: 791289 Reported: <br /> Sacramento CA,95834 Project Manager: Steve Giacomini 05/17/01 12:12 <br /> Volatile Organic Compounds by EPA Method 8260B -Quality Control <br /> Sequoia Analytical-Petaluma <br /> ' Reporting Spike Source "/uREC RPD <br /> Analyte Result MDL Limit Units Level Result "/oREC Limits RPD Limit Notes <br /> ' Batch 1050142-EPA 5030 waters <br /> Matrix Spike Dup(1050142-MSD1) Source:P105044-01 Prepared&Analyzed:05/07/01 <br /> Benzene 436 1.25 12.5 ug/l 125 376 48.0 80-119 5.14 20 Q-LIN1 <br /> ' Chlorobenzene 129 1.75 12.5 125 ND 103 86-117 0.772 20 <br /> 1,1-Dichloroethene 130 1.50 12.5 125 ND 104 74-114 7.41 20 <br /> Toluene 129 1.75 12.5 " 125 ND 103 86-115 5.28 20 <br /> Trichloroethene 122 1.50 12.5 125 ND 97.6 84-120 3.23 20 <br /> Surrogate:Dibromofluoromethane 5.66 5.00 113 88-118 <br /> Surrogate:1,2-Dichloroethane-d4 6.02 5.00 120 81-130 <br /> Surrogate:Toluene-d8 5.70 5.00 114 84-115 <br /> Surrogate:4-Bromofluorobenzene 5.14 5.00 103 78-124 <br /> Batch 1050236-EPA 5030 waters <br /> Blank(1050236-BL1) Prepared&Analyzed:OS/10/O1. <br /> Acetone ND 1.79 10.0 ug/l <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 /> Bromochloromethane 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 /> 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 19 of 26 <br />