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JjLaboratories Inc. <br /> Environmental Testing Laboratory Since 1949 <br /> Herst Associates Project: Austin Road/NCYCC Drilling Reported: 12119/2008 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 /> Quality Control Report- Method Blank Analysis <br /> lConstituent Batch ID QC Sample ID MB Result Units POL MDL Lab Quals <br /> Acrolein BRL0791 BRL0791-BLKI ND ugtL 20 3.8 <br /> .......... <br /> Acrylonitrile BRL0791 BRL0791-BLKI ND ug/L 5.0 1.5 <br /> —---------- <br /> Allyl chloride BRL0791 BRL0791-BLK1 ND ug/L 5.0 0.42 <br /> t-Amyl Methyl ether BRL0791 BRL0791-BLK1 ND ug/L 0.50 0.19 <br /> t-Butyl alcohol BRL0791 BRL0791-BLK1 ND ug/L 10 9.2 <br /> Carbon disulfide BRL0791 BRL0791-BLK1 ND ug/L 1.0 0.40 <br /> ChloropreneBRL0791 BRL0791-BLK1 ND ug/L 5.0 0.27 <br /> ............ <br /> trans-1,4-Dichloro-2-butene BRL0791 BRL0791-BLKI ND ug/L 5.0 1.4 <br /> Dilsopropyl ether BRL0791 BRL0791-BLKI ND ug/L 0.50 0,18 <br /> Ethanol BRL0791 BRL0791-BLKI ND ug/L 250 57 <br /> Ethyl methacrylate BRL0791 BRL0791-BLKI ND ug/L 4.0 1.0 <br /> Ethyl t-butyl ether BRL0791 BRL0791-BLKI ND ug/L 0.50 022.-----'-- <br /> Hexachloroethane BRL0791 BRL0791-BLK1 ND ug/L 0.50 0.061 <br /> -------------- <br /> 2-Hexanone BRL0791 BRI-0791-BLK1 ND ug/L 10 2.5 <br /> Isobutanol BRL0791 BRL0791-BLK1 ND ug/L 20---.",---13 <br /> Methacrylonitrile BRL0791 BRL0791-BLKI ND ug/L 10 2.6 <br /> Methyl ethyl ketone BRL0791 BRL0791-BLK1 ND ug/L 10 2.4 <br /> Methyl Iodide BRL0791 BRL0791-BLK1 ND ug/L 2.0 0.42 <br /> .............. <br /> Methyl isobutyl ketone BRL0791 BRL0791-BLKI ND ug/L 10 3.4 <br /> Methyl methacrylate BRL0791 BRL0791-BLKI ND ug/L 5.0 1.6 <br /> Propionitrile BRL0791 BRL0791-BLKI ND ug/L 20 13 <br /> Vinyl acetate BRL0791 BRL0791-BLK1 ND ug/L 10 2.5 <br /> 1 2-Dichlorcethane-d4(Surrogate) BRL0791 BRL0791-BLKI 94.7 % 76-114 (LCL-UCL) <br /> Toluene-d8(Surrogate) BRL0791 BRL0791-BLK1 103 % 88-110 (LCL-UCL) <br /> The results in this report apply to the samples analyzed in accordance faith the chain of custody document. This analytical report must be reproduced in its entirely. <br /> All results listed in this report am for the exclusive use of the submitting party. BC Laboratories,Inc.assumes no responsibility for report alteration,separation,detachment or third party interpretation. <br /> 4100 Atlas Court Bakersfield,CA 93308 (661)327-4911 FAX(661)327-1918 www.belabs.com Page 44 of 54 <br /> Certifications: California-ELAP Certification Number 1186; Nevada Administrative Code-NAC-445A <br />