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aora�ories Inc. <br /> Environmental Testing Laboratory Since 1949 <br /> Karst 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 8 ) <br /> BCI_Sample ID: 1008252-02 Client Sample Name: AMW-29,6/14/2010 9:25:00AM <br /> MB Lab <br /> Constituent Result Units PQL MDL Method Bias als Run# <br /> Methyl isobutyl ketone ND ug/L 10 2.1 EPA-8260 ND 1 <br /> Methyl methacrylate ND ug/t. - _--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 _.._.- <br /> 1,2-Dichloroethane-d4(Surrogate) 104 — % 76-114 (LCL-UCL) EPA-8260 1 <br /> Toluene-d8(Surrogate) 101 % 88-110 (LCL-UCL) EPA-8260 1 <br /> 4-Bromofluorobenzene(Surrogate) 96.1 % 86-115 (LCL-UCL) EPA-8260 1 <br /> Run QC <br /> Run Method Pree Date Date/Time Analyst Instrument Dilution Batch ID <br /> 1 EPA-8260 06/21/10— 06/23/10 00:48 MGC _MS-V5 �- 1- BTF1398 <br /> T/te 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 or the submitting party BC Laboratories,Inc.assumes no responsibility For report alteratioq separation,detachment or third party interpretation <br /> 4100 Atlas Court Bakersfield,CA 93308 (661)327-4911 FAX(661)327-1918 www.bclabs.com Page 12 of 36 <br />