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y� 1455 McDowell Blvd.North,Ste.D <br /> Sequoia Petaluma, 79 94954 <br /> -1865 <br /> (707)792-1865 <br /> 1116W Analytical FAX(707)792-0342 <br /> FAX <br /> Cambria Environmental-Emeryville Project: Equiva <br /> 6262 Hollis Street Project Number: 341 East Main St,Ripon Reported: <br /> Emeryville CA,94608 Project Manager: Owen Ratchye 02/12/01 17:31 <br /> Volatile Organic Compounds by EPA Method 8260B - 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.102016.4_:_EPA 5030 waters_ ___ <br /> Matrix Spike Dup(1020164-MSD1) Source:P102130-03 Prepared: 02/07/01 Analyzed:02/08/01 <br /> Benzene 1.00 0.500 ug/l 1.00 ND 100 80-119 0 20 <br /> Methyl tert-butyl ether 1.02 0.500 1.00 ND 102 79-118 0.976 20 <br /> Toluene 0.970 0.500 1.00 ND 97.0 86-115 0.103 20 <br /> Surrogate:Dibromofluoromerhane 5.16 5.00 103 88-118 <br /> Surrogate:1,1-Dichloroethane-d4 5.23 5.00 105 81-130 <br /> C Surrogate:Toluene-d8 4.79 5.00 95.8 84-115 <br /> Surrogate:4-Bromofluorobenzene 5.40 5.00 108 78-124 <br /> Batch 1020188-EPA 5030 waters <br /> Blank(1020188-BLK1) Prepared&Analyzed:02/08/01 <br /> Tert-amyl methyl ether ND 1.00 ug/l <br /> Benzene ND 0.500 " <br /> Tert-butyl alcohol ND 20.0 " <br /> f Di-isopropyl ether ND 1.00 " <br /> 1,2-Dibromoethane(EDB) ND 0.500 " <br /> 1,2-Dichloroethane ND 0.500 " <br /> Ethanol ND 100 <br /> Bthylbenzene ND 0.500 " <br /> Ethyl tert-butyl ether ND 1.00 " <br /> Methyl tert-butyl ether ND 0.500 " <br /> Toluene ND 0.500 " <br /> Xylenes(total) ND 0.500 " <br /> Surrogate:Dibromofluoromethane 5.09 5.00 101 88-118 <br /> Surrogate:1,2-Dichloroethane-d4 5.35 5.00 107 81-130 <br /> Surrogate:Toluene-d8 4.80 5.00 96.0 84-115 <br /> Surrogate:4-Bromofluorobenzene 5.36 5.00 107 78-124 <br /> Sequoia Analytical-Petaluma The results in this report apply to the samples analyzed in accordance with the chain IV <br /> custody document. This analytical report must be reproduced in its entirety. <br /> Page 7 of 9 <br />