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f f <br /> 819 Striker Avenue,Suite 8 <br /> e ®� Sacramento,CA 95834 <br /> (916)921-9600 <br /> FAX(916)921-0100 <br /> Analytical wwwsequoialabs.com <br /> o <br /> EMCON/IT-Sacramento Project: Foothill Landfill,San Joaquin County Sampled: 9/12/00 <br /> 1433 N.Market Blvd.,#I Project Number: 791289/16037-200.000 Received: 9/12/00 <br /> Sacramento,CA 9583.3 Project Manager: Steve Giacomini Reported: 10/10/00 <br /> Volatile Organic Compounds by EPA Method 8260B/Quality Control <br /> Sequoia Analytical-Petaluma <br /> Date Spike Sample QC Reporting Limit Recov. RPD RPD <br /> Analyte Analyzed Level Result Result Units Recov.Limits % Limit % Notes* <br /> Blank(continued) 0090431-BLK2 <br /> o-Xylene 9/21/00 ND ug/1 0.500 U <br /> Surrogate: Dibromofluoromethane 5.00 4.76 88-118 95.2 <br /> Surrogate: 1,2-Dichloroethane-d4 5.00 4.52 81-130 90.4 <br /> Surrogate: Toluene-d8 5.00 4.80 84-115 96.0 <br /> Surrogate: 4-Bromofluorobenzene 5.00 4.68 78-124 93.6 <br /> LCS 0090431-BSI <br /> Benzene 9/20/00 5.00 4.78 ug/l 79.7-114 95.6 <br /> Chlorobenzene 5.00 5.33 80.5-114 107 <br /> 13-Dichloroethene 5.00 5.02 76.9-117 100 <br /> Toluene 5.00 5.17 79.8-113 103 <br /> Trichloroethene 5.00 5.60 78.4-114 112 <br /> Surrogate: Dibromofluoromethane 5.00 5.24 88-118 105 <br /> Surrogate: 1,2-Dichloroethane-d4 5.00 4.96 81-130 99.2 <br /> Surrogate: Toluene-d8 5.00 4.70 84-115 94.0 <br /> Surrogate: 4-Bromofluorobenzene 5.00 4.97 78-124 99.4 <br /> LCS 0090431-BS2 <br /> Benzene 9/21/00 5.00 4.31 ug/1 79.7-114 86.2 <br /> Chlorobenzene " 5.00 4.90 " 80.5-114 98.0 <br /> 1,1-Dichloroethene 5.00 4.59 76.9-117 91.8 <br /> Toluene 5.00 4.62 79.8-113 92.4 <br /> Trichloroethene 5.00 5.18 78.4-114 104 <br /> Surrogate: Dibromofluoromethane 5.00 4.95 88-118 99.0 <br /> Surrogate: 1,2-Dichloroethane-d4 5.00 4.48 81-130 89.6 <br /> Surrogate: Toluene-d8 5.00 4.61 84-115 92.2 <br /> Surrogate: 4-Bromofluorobenzene 5.00 4.52 78-124 90.4 <br /> Matrix Spike 0090431-MS1 P009272-04 <br /> Benzene 9/20/00 5.00 ND 4.83 ug/1 79.7-114 96.6 <br /> Chlorobenzene 5.00 ND 5.31 80.5-114 106 <br /> 1,1-Dichloroethene 5.00 1.04 6.16 76.9-117 102 <br /> Toluene 5.00 ND 5.12 79.8-113 102 <br /> Trichloroethene 5.00 2.25 7.85 78.4-114 112 <br /> Surrogate: Dibromofluoromethane 5.00 5.21 88-118 104 <br /> Surrogate: 1,2-Dichloroethane-d4 5.00 4.91 81-130 98.2 <br /> Surrogate: Toluene-d8 5.00 4.69 84-115 93.8 <br /> Surrogate: 4-Bromofluorobenzene 5.00 4.60 78-124 92.0 <br /> Matrix Spike Dup 0090431-MSDI P009272-04 <br /> Benzene 9/20/00 5.00 ND 4.76 ug/1 79.7-114 95.2 20 1.46 <br /> Sequoia Analytical-Sacramento *Refer to end of report for text of notes and definitions. <br /> Page 28 of 37 <br />