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Laboratories Inc. <br /> Environmental Testing Laboratory Since 1949 <br /> Herst Associates Project: Austin Road/NCYCC Drilling Reported: 12/19/2008 13:17 <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 1D: 0816165-02 Client Sample Name: Trip Blank, 12/8/2008 12:00:OOAM <br /> Prep Run Instru- QC MB Lab <br /> Constituent Result Units PQL. MDL Method Date Daterrime Anal st ment ID Dilution Batch ID Bias Quals <br /> Acetone ND ug/L 10 7.4 EPA-8260 12110/08 12/10/08 10:38 MGC MS-V5 1 BRL0791 ND <br /> Acetonitrile ND ug/L 10 5.2 EPA-8260 12/10108 12/10/08 10:38 MGC MS-V5 1 BRL0791 ND <br /> Acrolein ND ug/L 20 3.8 EPA-8260 12/10/08 12/10/0810:38 MGC MS-V5 1 BRL0791 ND A40 <br /> Acrylonitrile ND ug/L 5.0 1.5 EPA-8260 12/10/08 12/10/08 10:38 MGC MS-V5 1 BRL0791 ND <br /> Allyl chloride ND ug/L 5.0 0.42 EPA-8260 12/10/08 12/10/08 10:38 MGG MS-V5 1 BRL0791 ND <br /> t Amyl Methyl ether ND ug/L 0.50 0.19 EPA-8260 12/10/08 12/10/08 10:38 MGC MS-V5 1 BRL0791 ND <br /> t-Butyl alcohol ND ug/L 10 9.2 EPA-8260 12/10108 12110/08 10:38 MGC MS-V5 1 BRL0791 ND <br /> Carbon disulfide ND ug/L 1A 0.40 EPA-8260 12/10/08 12/10/08 10:38 MGC MS-V5 1 BRL0791 ND <br /> Chloroprene ND ug/L 5.0 0.27 EPA-8260 12/10/08 12/10/08 10:38 MGC MS-V5 1 BRL0791 ND <br /> trans-l,4-Dichloro-2-butene ND uglL 5.0 1.4 EPA-8260 12/10/08 12/10/08 10:38 MGC MS-V5 1 BRL0791 ND <br /> Diisopropyl ether ND ug/L 0.50 0.18 EPA-8260 12/10/08 12/10/08 10:38 MGC MS-V5 1 BRL0791 ND <br /> Ethanol ND ug/L 250 57 EPA-8260 12/10/08 12/10/08 10:38 MGC MS-V5 1 BRL0791 ND <br /> Ethyl methacrylate ND uglL 4.0 1.0 EPA-8260 12110/08 12/10/08 10:38 MGC MS-V5 1 BRL0791 ND <br /> Ethyl t-butyl ether ND ug/L 0.50 0.22 EPA-8260 12110/08 12/10/08 10:38 MGC MS-V5 1 BRL0791 ND <br /> Hexachloroethane ND ug/L 0.50 0.061 EPA-8260 12110/08 12t10/08 10:38 MGC MS-V5 1 BRL0791 ND <br /> 2-Hexanone ND ug/L 10 2.5 EPA-8260 12110/08 12110(08 10:38 MGC MS-V5 1 BRL0791 ND <br /> Isobutanol ND ug/L 20 13 EPA-8260 12/10/08 12/10/08 10:38 MGC MS-V5 1 BRL0791 ND <br /> Methacryionitrile ND ug/L 10 2.6 EPA-8260 12/10/08 12/10/08 10:38 MGC MS-V5 1 BRL0791 ND <br /> Methyl ethyl ketone ND ug/L 10 2.4 EPA-8260 12/10/08 12/10/08 10:38 MGC MS-V5 1 BRL0791 ND <br /> Methyl iodide ND ug/L 2.0 0.42 EPA-8260 12/10/08 12/10/08 10:38 MGC MS-V5 1 BRL0791 ND <br /> Methyl isobutyl ketone ND ug/L 10 3.4 EPA-8260 12/10/08 12/10/08 10:38 MGC MS-V5 1 BRL0791 ND <br /> Methyl methacrylate ND ug/L 5.0 1.6 EPA-8260 12/10108 12/10/08 10:38 MGC MS-V5 1 BRL0791 ND <br /> Propionitrile ND ug/L 20 13 EPA-8260 12/10/08 12/10/08 10:38 MGC MS-V5 1 BRL0791 ND <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 party. BC Laboratories assumes no responsibility for report alteration,separation,detachment or third party interpretation. <br /> 4100 Atlas Court Bakersfield,CA 93308 ( 7-4911 FAX(661)327-1918 www.bclabs.com age 21 of 54 <br /> Certifications: California-ELAP Certification N . 1186; Nevada Administrative Code-NAC-445A <br />