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819 Striker Avenue,Suite 8 <br /> Sequoia Sacramento,CA 95834 <br /> (916)921-9600 <br /> 4D- Analytical wFAX(916)921-0100 <br /> Wo ww.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 %REC RPD <br /> Analyte Result MDL Limit Units Level Result °/.REC Limits RPD Limit Notes <br /> Batch 1050236-EPA 5030 waters <br /> LCS(1050236-BS1) Prepared&Analyzed:05/10/01 <br /> Benzene 5.73 0.0500 0.500 ug/I 5.00 115 80-119 <br /> Chlorobenzene 5.26 0.0700 0.500 5.00 105 86-117 <br /> 1,1-Dichloroethene 5.13 0.0600 0.500 5.00 103 74-114 <br /> Toluene 5.70 0.0700 0.500 5.00 114 86-115 <br /> Trichloroethene 5.80 0.0600 0.500 5.00 116 84-120 <br /> Surrogate:Dibromofluoromethane 4.93 ,I 5.00 98.6 88-118 <br /> Surrogate:1,2-Dichloroethane-d4 5.15 5.00 103 81-130 <br /> Surrogate:Toluene-d8 5.37 5.00 107 84-115 <br /> Surrogate:4-Bromofluorobenzene 5.12 5.00 102 78-124 <br /> LCS(1050236-BS2) Prepared&Analyzed:05/12/01 <br /> Benzene 5.50 0.0500 0.500 ug/I 5.00 110 80-119 <br /> Chlorobenzene 5.26 0.0700 0.500 5.00 105 86-117 <br /> 1,1-Dichioroethene 4.87 0.0600 0.500 5.00 97.4 74-114 <br /> Toluene 5.45 0.0700 0.500 5.00 109 86-115 <br /> Trichloroethene 5.84 0.0600 0.500 5.00 117 84-120 <br /> Surrogate:Dibromofluoromethane 5.08 5.00 102 88-118 <br /> Surrogate:1,2-Dichloroethane-d4 4.80 5.00 96.0 81-130 <br /> ' Surrogate:Toluene-& 5.24 5.00 105 84-115 <br /> Surrogate:4-Bromofluorobenzene 4.71 5.00 94.2 78-124 <br /> Matrix Spike(1050236-MSI) Source:P105052-05 Prepared&Analyzed:05/10/01 <br /> Benzene 5.49 0.0500 0.500 ug/l 5.00 ND 110 80-119 <br /> Chlorobenzene 5.23 0.0700 0.500 5.00 ND 105 86-117 <br /> 1,1-Dichloroethene 4.94 0.0600 0.500 5.00 0.147 95.9 74-114 <br /> Toluene 5.44 0.0700 0.500 5.00 ND 109 86-115 <br /> Trichloroethene 5.22 0.0600 0.500 5.00 ND 104 84-120 <br /> Surrogate:Dibromofluoromethane 5.05 5.00 101 88-118 <br /> Surrogate:1,2-Dichloroethane-4 5.10 5.00 102 81-130 <br /> ' Surrogate:Toluene-8 5.28 „ 5.00 106 84-115 <br /> Surrogate:4-Bromofluorobemene 4.79 5.00 95.8 78-124 <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 enttrety. <br /> ' Page 24 of 26 <br />