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Laboratories Inc. <br /> Environmental Testing Laboratory Since 1946 <br /> Herst Associates Reported: 06/23/2010 12:34 <br /> 4630 South Highway 94 North Outer Road Project: Austin Road/NCYCC Drilling <br /> Saint Charles,MO 63304 Project Number: [none] <br /> Project Manager. Erin Fanning <br /> Volatile Organic Analysis (EPA Method 6260) <br /> BCL Sample ID: 1008252-03 Client Sample Nave: AMW-29S,6/14/2010 10:23:OOAM <br /> MB Lab <br /> Constituent Result Units PPL MDL Method Bias Qualls Run# <br /> Methyi lsobutyl ketone ND ug/L 10 2.1 EPA-8260 ND 1 <br /> Methyl methacrylate ND ug/L 5.0 1.5 EPA-8260 ND 1 <br /> Propionitrile ND ug/L 20 4.5 EPA-8260 ND 1 <br /> Vinyl acetate ND ug/L 10 2.4 EPA-8260 ND 1 <br /> 1,2-Dichloroethane-d4(Surrogate) 102 % 76-114 (LCL-UCL) EPA-8260 1 <br /> Toluene-418(Surrogate) 101 % 88-110 (LGL-UCL) EPA>8260 - <br /> 4-Bromofluorobenzene(Surrogate) 97.1— % 86-115 (LCL-UCL) EPA-8260 1 — <br /> Run QC <br /> Run# Method Prop Date Date/Time Anal t Instrument Dilution Batch ID <br /> _ .......................................... . <br /> 1 EPA-8260 06/21/10 06/23/10 01:16 MGC MS-V5 1 BTF1398 <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 fhe exclusive use of the submitting party BC Laboratories,Inc.assumes no responsibility for repot alteratioq separation,detachment or third pasty interpretation <br /> 4100 Atlas Court Bakersfield,CA 93308 (661)327-4911 FAX(661)327-1918 www.bclabs.com Page 15 of 36 <br />