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1455 McDowell Blvd.North,Ste.D <br /> Petaluma,CA 94954 <br /> Sequoia (707)792-1865 <br /> PAX(707)792-0342 <br /> Analytical www.scquoialabs.com <br /> Cambria Environmental-Emeryville Project: Equiva <br /> Reported: <br /> 6262 Hollis Street Project Number: 341 East Main St,Ripon <br /> Emeryville CA,94608 <br /> Project Manager: Owen Ratchye 01/03/01 i 5:01 <br /> Volatile Organic Compounds by EPA Method 8260B - Quality Control <br /> Sequoia Analytical- Petaluma <br /> Reporting Spike Source %REC RPD <br /> Xnalyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> latch 0120618-EPA 5030 waters <br /> .CS(0120618-BS1) _ Prepared&Analyzed: 12/29/00 <br /> ienzene <br /> 5.17 0.500 ugll 5.00 103 80-119 <br /> rlethyl tert-butyl ether <br /> 5.26 0.500 5.00 105 79-118 <br /> 'oluene <br /> 4.85 0.500 5.00 97.0 86-115 _ <br /> �urrogafe:pibramafluoromethane <br /> 4.89 5.00 97.8 88-118 <br /> 5.24 5.00 105 81-130 <br /> surrogate.• 1,2-Dichloroethane-d4 <br /> surrogate: Toluene-d8 <br /> 4.86 5.00 97.1 84-115 <br /> surrogate:4-Bromofluorobenzene <br /> 5.65 5.00 1!3 78-114 <br /> CS(0120618-BS3) Prepared&Analyzed:01/02/01 <br /> ene <br /> 5.11 0.500 ug/1 5.00 102 80-119 <br /> ethyl tert-butyl ether <br /> 5.69 0.500 5.00 114 79-118 <br /> faluene <br /> 4.65 0.500 5.00 93.0 86-115 <br /> surrogate:DibramoRuoromethane <br /> 5.11 5.00 102 88-118 <br /> surrogate: 1,2-Dichloroethane-d4 <br /> 5.71 5.00 114 8l-130 <br /> surrogate: Toluene-d8 <br /> 4.87 5.00 97.4 84-11.5 <br /> 4urragate:4-Bromofluorobenzene <br /> 5.28 5.00 106 78-124 <br /> Matrix Spike(0120618-MSI) Source: P012572-32 Prepared: 12/29/00 Analyzed: 12/30/00 _ <br /> Benzene 5.00 0.500 ugll 5.00 ND 100 80-119 <br /> Methyl tert-butyl ether 5.26 0.500 5.00 ND 105 79-118 <br /> Toluene 4.89 0.500 5.00 ND 97.8 86-115 <br /> Surrogate:DibromoJluorornethane <br /> 4.86 5.00 97.2 88-118 <br /> Surrogate:l,2-Dichloroethane-d4 5.44 5.00 109 81-130 <br /> 4.84 5.00 96.8 84-115 <br /> Surrogate:Toluene-d8 117 78-114 <br /> surrogate:4-Bromofluorobenzene 5.87 5.00 <br /> Matrix Spike Dup(0120618-MSD1) Source: P012572-32 Prepared: 12/29/00 Analyzed: 12/30/00 <br /> Benzene 4.89 0.500 ugll 5.00 ND 97.8 80-119 2.22 20 <br /> Methyl tert-butyl ether 5.49 0.500 5.00 ND 110 79-118 4.28 20 <br /> -Toluene 4.39 0.500 5.00 ND 87.8 86-115 10.8 20 <br /> " 5.00 107 88.118 <br /> Surrogate:Dibromofluoromethane 5.33 " 118 81-130 <br /> Surrogate:1,2-Dichloroethane d4 5.92 " 5.00 <br /> s nn 98.2 84-I1S <br /> Surrogate:Toluene-d8 4.Y1 " -.-- <br /> Surrogate:4-Bromofluorobenzene 5.84 <br /> 5.00 117 78-124 <br /> 0 <br /> Sequoia Analytical-Petaluma 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 />