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1455 McDowell Blvd.North,Ste.D <br /> Petaluma,CA 94954 <br /> Sequoia (707)792-0865 <br /> 4 <br /> FAX(707)792-0342 <br /> Analytical www.sequoialabs.com <br /> (D <br /> 4W <br /> Cambria Environmental-Emeryville Project: Equiva <br /> Reported: <br /> 6262 Hollis Street Project Number: 341 E.Main St.,Ripon,CA <br /> Emeryville CA,9460$ <br /> Project Manager: Owen Rastchye 11/29/00 16:19 <br /> Volatile Organic Compounds by EPA Method 8260B - Quality Control <br /> Sequoia Analytical- Petaluma <br /> Reporting Spike Source %R£C RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch 0110682-EPA 5030 waters <br /> LCS(0110682-BS1) Prepared&Analyzed: 11128100 <br /> Benzene <br /> 1.01 0.500 ug/1 1.00 101 80-019 <br /> Methyl cert-butyl ether <br /> 0.960 0.500 1.00 96.0 79-118 <br /> Toluene 0.941 0.500 1.00 94.1 86-115 <br /> 5 0D 88.8 88-118 <br /> Surrogate:Dibromofluoromethane <br /> 4 44 <br /> Surrogate.1,2-Dichloroethane-d4 <br /> 4.33 5.00 86.b 81-130 <br /> Surrogate:Toluene-d8 <br /> 4.68 5.00 93.6 84-115 <br /> Surrogate:4-Bromofl uorobenzene <br /> 4.44 5.00 88.8 78-114 <br /> LCS(0 1 10682-BS2) - Prepared&Analyzed: 11/29/00 <br /> Benzene <br /> 4.86 0.500 ugll 5.00 97.2 80-119 <br /> hy!tort-butyl ether <br /> 4.54 0.500 5.00 90.8 79-118 <br /> enc <br /> 4.71 0.500 5.00 94.2 86-115 <br /> 92.0 88-118 <br /> Surrogate:Dibromofluoromethane <br /> 4.60 5.00 <br /> Surrogate:1,2-Dichloroethane-d4 <br /> 4.52 5.00 90.4 81-130 <br /> Surrogate:Toluene-d8 4.81 5.00 96.2 84-115 <br /> Surrogate:4-Bromofluorobenzene <br /> 4.58 5.00 91.6 78-124 <br /> Matrix Spike 0110682-MSI) Source: P011659-04 Prepared&Analyzed: 11/28/00 <br /> P - ----- -��-� 5.00 ND 98.4 80-119 <br /> Benzene 4.92 0.500 ug11 <br /> Methyl tert-butyl ether 4.72 0.500 „ 5.00 ND 94.4 79-1 l8 <br /> Toluene 4.62 0.500 5.00 ND 92.4 86-115 <br /> 4.85 5.00 97.0 88-118 <br /> Surrogate:Dibromofluoromethane <br /> 4.75 5.00 95.0 81-130 <br /> Surrogate:1,2-Dichloroethane-d4 46,6 84-115 <br /> Surrogate:Toluene-d8 4.83 5.00 <br /> Surrogate:4-Bromofluorobenzene <br /> 4.42 5.00 88.4 78-124 <br /> Matrix Spike DuP 0110682-MSD1) Source: P011659-04 Prepared&Analyzed: 11/28/00 <br /> - - -- -� 5.00 ND 98.2 80-119 0.203 20 <br /> Benzene 4.91 0.500 ug/l <br /> Methyl tent-bury!ether 4.89 0.500 " 5.00 ND 97.8 79-118 3.54 20 <br /> 4.65 0.500 5.00 ND 93.0 86-115 0.647 20 <br /> Toluene <br /> Surrogate:Di- <br /> Surrogate., 4.67 „ 5.00 93.4 88-118 <br /> 4.77 5.00 95.4 81-130 <br /> Surrogate: 1,2-Dichloroethane-d4 93.2 84-115 <br /> Surrogate: Toluene-d8 4.66 N 5.00 <br /> Surrogate:4-Bromofluorobenzene <br /> 4.39 5.00 87.8 78-124 <br /> equoia Analytical-Petaltttna The results in this report apply 10 the samples analyzed in accordance with the chain of <br /> custody document. This analytical report must be reproduced in its entirety. <br /> Page 7 of 8 <br /> e _ <br />