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1455 McDowell Blvd,North Ste D <br /> Sequoia <br /> Petaluma,CA 94954 <br /> 865 <br /> (707)792-1865 <br /> Analytical FA,.scq i laba.42 <br /> www.sequoialabs.com <br /> MACTEC E&C-Petaluma Project General Commercial P412379 <br /> Reported: <br /> NbSrFrac UST/AST-3205040383.02 <br /> Petaluma <br /> Old Redwood Highway,Suite 300 Project umer: earSy <br /> Petaluma CA,94954 Project Manager:Gary Lieberman 01/05/05 10:53 <br /> Volatile Organic Compounds by EPA Method 8260B <br /> Sequoia Analytical -Petaluma <br /> Reporting <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Note <br /> 0452SS005(P412379-05)Soil Sampled: 12/21/04 16:00 Received: 12/22/04 09:20 <br /> Hexachlorobutadiene ND 5.0 ug/kg 1 5010020 01/03/05 01/04/05 EPA 8260B <br /> 2-Hexanone NO 10 „ <br /> lsopropylbenzene ND 5.0 " <br /> p-Isopropyltoluene NO 5.0 <br /> Methylene chloride NO 5.0 <br /> 4-Methyl-2-pentanone ND 10 „ <br /> Methyl tert-butyl ether ND 5.0 <br /> Naphthalene NO 5.0 <br /> n-Propylbenzene ND 5.0 <br /> Styrene NO 5.0 " <br /> 1,1,2,2-Tetrachloroethane NO 5.0 <br /> 1,1,1,2-Tetrachloroethane NO 5.0 " <br /> Tetrachloroethene NO 5.0 " <br /> Toluene NO 5.0 <br /> 1,2,3-Trichlorobenzene NO 5.0 " <br /> 1,2,4-Trichlorobenzene NO 5.0 " <br /> 1,1,2-Trichloroethane ND 5.0 ., <br /> 1,1,1-Trichloroethane NO 5.0 <br /> Trichloroethene ND 5.0 <br /> Trichlorofluoromethane NO 5.0 " <br /> 1,2,3-Trichloropropane ND 5.0 ., <br /> 1,3,5-Trimethylbenzene ND 5.0 <br /> 1,2,4-Trimethylbenzene ND 5.0 <br /> Vinyl acetate NO 10 <br /> Vinyl chloride NO 5.0 <br /> m,p-Xylene NO 5.0 „ <br /> o-Xylene ND 5.0 — —„ <br /> Surrogate:Dibromofluoromethane 95% 81-126 II „ <br /> Surrogate: 1,2-Dichloroethane-d4 98% 73-131 „ <br /> Surrogate: Toluene-d8 96% 82-129 <br /> Surrogate:4-BromoJluorobenzene 97% 74-131 <br /> Sequoia Analytical-Petaluma The results in this report apply to the samples analyzed in accordance with the chain of <br /> custody document Unless otherwise stated,results are reported on a wet weight basis. <br /> This analytical report most be reproduced in its entirety. <br /> Page 17 of 46 <br />