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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 Analysis (EPA Method 8260) <br /> BCL Sample ID: 0809206-0�2CIient Sample Name.- Well#1,7/1512008 2:08:OOPM,David Vasbinder <br /> Prep Run Instru- QC MB Lab <br /> Constituent Result Units PQL MDL Method Date DateMmo_ Ana!)M! mentlD Dilution Batchll) Bias Quals <br /> t-Butyl alcohol ND uglt. 10 9.2 EPA-8260 07/18108 07119108 02:52 SVM MS-V9 1 BRG1228 ND <br /> ------------ <br /> Carbon disuffide, ND ug/L 1.0 0.40 EPA-8260 07/18108 07/19108 02:52 SVM MS-V9 1 BRG1228----ND <br /> ...........------ <br /> trans-1,4-Dichloto-2-butene ND ug/L 5.0 1.4 EPA-8260 07118/08 07/19/08 02:52 SVM MS V9 1 BRG1228 ND <br /> Diisopropyl ether ND ug/L 0.50 0.18 EPA-8250 07/18/08 07f19/08 02-.52 SVM MS-V9 1 BRG1228 ND <br /> Ethanol ND ug/L 250 57 EPA-8260 07/18/08 07/19/08 02:52 SVM MS-V9 1 BRG1228 ND <br /> Ethyl t-butyl ether ND ug/L 0.50 0-22 EPA-8260 07/18108 07/19/08 02:52 SVM MS-V9 1 BRG1228 ND <br /> 2-Hexanone ND ug/L 10 2.5 EPA-8260 07/18f08 07119/08 02:52 SVM MS-V9 1 BRG1228 ND <br /> Methyl ethyl ketone ND ug/L 10 2.4 EPA-8260 07118f08 07/19/08 02:52 SVM MS-V9 1 BRG1228 ND <br /> ........ <br /> Methyl iodide ND ug/L 2.0 0.42 EPA-8260 07/18f08 07/19108 02:52 SVM MS-V9 BRG1228 ND <br /> ............ ------- <br /> Methyl isobutyl ketone ND ug/L 10 3.4 EPA-8260 07/18/08 07/19/08 02:52 SVM MS-V9 1 BRG1228 ND <br /> Vinyl acetate ND ug/L 10 2.5 EPA-8260 07118/08 07/19/08 02:52 SVM MS-V9 1 BRG1228 ND <br /> 1,2-Dichloroethane-d4(Surrogate) 103 % 76-114 (LCL-UCL) EPA-8260 07118/08 07/19108 02:52 SVM MS-V9 1 BRG1228 <br /> ......... <br /> Toluene-d8(Surrogate) 102 % 88-110 (LCL-UCL) EPA-8260 07118/08 07/19108 02:52 SVM MS-V9 1 BRG1228 <br /> 4-Bromofluorobenzene(Surrogate) 91.8 % 86-115 (LCL-UCL) EPA-8260 07/18/08 07119108 02:52 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 listed in this report are for the exclusive use of the submitting Davy- BC Laboratories,inc.assumes no responsibility for report alteration,separation,detachment or third party interpretation. <br /> A4^n A&J-- rA cm,:tni; WI)I97-4411 FAX(661)327-1918 www.bclabs.com Page 9 of 36 <br />