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1455 McDowell Blvd.North,Ste.D <br /> Sequoia Petaluma,CA 94954 <br /> 4D (707)792-1865 <br /> FAX(707)792-0342 <br /> WOAnalytical www.sequoialabs.com <br /> -0 <br /> Cambria Environmental-Emeryville Project: Equiva <br /> 6262 Hollis Street Project Number: 341 East Main St.,Ripon,CA. Reported: <br /> Emeryville CA 94608 Project Manager: Owen Rastchye - 11/29/00 17:17 <br /> Volatile Organic Compounds by EPA Method 826013-Quality Control <br /> Sequoia Analytical - Petaluma <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch 0110682-EPA 5030 waters <br /> LCS(0110682-BSI) Prepared&Analyzed: 11128/00 _ <br /> Benzene LOl 0.500 ug/l 1.00 101 80-119 <br /> Methyl tert-butyl ether 0.960 0.500 1.00 96.0 79-118 <br /> Toluene 0.941 0.500 1.00 94.1 86-115 <br /> Surrogate:Dibromofleroromethane 4.44 5.00 88.8 88-118 <br /> Surrogate: 1,2-Dichloroethane-r14 4.33 5.00 86.6 81-130 <br /> Surrogate: 'Toluene-d8 4.68 5.00 93.6 84-115 <br /> Surrogate:4-Brornofluorobenzene 4.44 5.00 88.8 78-124 <br /> L_CS(0110682-BS2) Prepared&Analyzed: 11/29/00 <br /> Benzene 4.86 0.500 ug/l 5.00 97.2 80-119 <br /> Methyl tert-butyl ether 4.54 0.500 5.00 90.8 79-118 <br /> Toluene 4.71 0.500 5.00 94.2 86-115 <br /> Surrogate:Dibromofluoromethane -� - -- 4.60 - ----- 5.00 92.0 88-118 - ------- <br /> Surrogate: 1,2-Dichloroethane-d4 4.52 5.00 90.4 81-130 <br /> Surrogate: Toluene-d8 4.81 5.00 961 84-115 <br /> Surrogate:4-Bromofluorobenzene 4.58 5.00 91.6 78-124 <br /> Matrix Spike(0110682-MSI) Source: P011659-04 Prepared&Analyzed: 11/28/00 <br /> Benzene 4.92 0.500 ugA 5.00 ND 98.4 80-119 <br /> Methyl Cert-butyl ether 4.72 0.500 5.00 ND 94.4 79-118 <br /> Toluene 4.62 0.500 5.00 ND 92.4 86-115 <br /> Surrogate:Dibromofluoromelhane 4.85 5.00 97.0 88-118 <br /> Surrogate: 1,2-Dichloroethane-d4 4.75 5.00 95.0 81-130 <br /> Surrogate: Toluene-d8 4.83 5.00 96.6 84-115 <br /> Surrogate:4-Bromofluorobenzene 4.42 5.00 88.4 78-124 <br /> Matrix Spike Dup(01 10682-MSD 1) _ Source: P011659-04 Prepared&Analyzed: 11/28/00 <br /> Benzene T 4.91 0.500 ug/l 5.00 ND 98.2 80-111) 0.203 20 <br /> Methyl tert-butyl ether 4.89 0.500 5.00 ND 97.8 79-118 3.54 20 <br /> Toluene 4.65 0.500 5.00 ND 93.0 86-115 0.647 20 <br /> Surrogate:Dibromofluorornethane. 4.67 5.00 93.4 88-118 <br /> Surrogate: 1,2-Dichloroethane-d4 4.77 5.00 95.4 81-130 <br /> Surrogate: Toluene-d8 4.66 5.00 93.2 84-115 <br /> Surrogate:4-Bromofluorobenzene 4.39 5.00 87.8 78-124 <br /> Sequoia Analytical-Petaluma The results in this report apply to the samples analyzed in accordance with the chain o0 <br /> custody document. This analytical report must be reproduced in its entirety. <br /> Page 8 of 9 <br />