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_ <br /> Laboratories- Inc- <br /> Environmental Testing Laboratory Since 1949 <br /> Herst Associates Project: NCYC Reported: 07/21/2008 16:37 <br /> 4630 South Highway 94 North Outer Road Project Number: [none] <br /> Saint Charles,MO 63304 Project Manager: David Vasbinder <br /> Volatile Organic lysis (EPA Method 8260) <br /> BCL Sample ID: 0809206-09 Client Sample Name: Trip blank,7/15/2008 12:00:OOAM <br /> Prep Run Instm- QC MB Lab <br /> Constituent Result Units PQL MDL Method Date DateMme Analyst ment 1D Dilution Batch iD Bias Quals <br /> t-Butyl alcohol ND ug/L 10 9.2 EPA-8260 07/18/08 07/19/08 02:00 SVM MS-V9 1 BRG1228 ND <br /> Carbon disuifide ND ug/L 1.0 0.40 EPA-8260 07/18/08 07/19/08 02:00 SVM MS-V9 1 BRG1228 ND <br /> trans-1,4-Dichloro-2-butene ND ug/L 5.0 1.4 EPA-8260 07/18/08 07/19/08 02:00 SVM MS-V9 1 BRG1228 ND <br /> Diisopropyl ether ND ug/L 0.50 0.18 EPA-8260 07/18108 07/19/08 02:00 SVM MS V9 1 BRG1228 ND <br /> Ethanol ND ug/L 250 57 EPA-8260 07/18/08 07/19/08 02:00 SVM MS V9 1 BRG1228 ND <br /> Ethyl t-butyl ether ND ug/L 0.50 0.22 EPA-8260 07/18/08 07/19/08 02:00 SVM MS-V9 1 BRG1228 <br /> ND <br /> 2-Hexanone ND ug/L 10 2.5 EPA-8260 07/18/08 07/19/08 02:00 SVM MS-V9 1 BRG1228 ND <br /> Methyl ethyl ketone ND ug/L 10 2.4 EPA-8260 07/18/08 07/19/08 02:00 SVM MS-V9 1 BRG1228 <br /> Methyl iodide ND uglL 2.0 0.42 EPA-8260 07/18/08 07/19/08 02:00 SVM MS-V9 1 BRG1228 ND <br /> Methyl isobutyl ketone ND ug/L 10 3.4 EPA-8260 07/18108 07/19/08 02:00 SVM MS-V9 1 BRG1228 ND <br /> Vinyl acetate ND ug/L 10 2.5 EPA-8260 07/18/OB 07/19/08 02:00 SVM MS-V9 1 BRG1228 ND <br /> 1,2-Dichloroethane-d4(Surrogate) 87.9 % 76-114 (LCL-UCL) EPA-8260 07/18/08 07/19/08 02:00 SVM MS-V9 1 BRG1228 <br /> Toluene-d8(Surrogate) 101 % 88-110 (LCL-UCL) EPA-8260 07/18108 07/19/08 02:00 SVM MS-V9 1 BRG1228 <br /> 4-Bromofluorobenzene(Surrogate) 91.0 % 86-115 (LCL-UCL) EPA-8260 07/18108 07/19/08 02:00 SVM MS-V9 1 BRG1228 <br /> The results in this report apply to the samples analyzed in accordance with the chain of custody document_ This analytical report must be reproduced in its entirety. <br /> All results fisted in this report are for the exclusive use of the submitting party. BC Laboratories.Inc.assumes no responsbiliiv for report alteration,separation,detachment or third party interpretation. <br /> A nn w•e__n-..e o,,,,,..,-a..,,a r�A n3nnn IrR11 497-AtN1 Pax MAI)197-1QIA wwwhclabs.corn Page 30 of 36 <br />