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Laboratories.-—Inc. <br /> Ulm <br /> Environmental Testing Laboratory Since 1949 <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 /> ..............I....................I---....--.,.,.-.,- <br /> Project Manager Erin Fanning <br /> Volatile Organic Analysis (EPA Method 8260) <br /> BCL Sample ID: 1008252-06 TClient Sample Name: AMW-30S,6/14/2010 12:08:OOPM <br /> MB Lab <br /> Constituent Result Units P MDL Method Bias Qualls Run# <br /> Methyl isobutyi ketone ND ug/L 10 2.1 EPA-8260 ND <br /> Methyl methacrylate ND ug/L 5.0 1.5 EPA-8260 ND <br /> Proplonitrile ND ug/L 20 4.5 EPA-8260 ND <br /> Vinyl acetate ND ug/L. 10 2.4 EPA-8260 ND <br /> 1,2-Dichloroethane-d4(Surrogate) 101 % 76-114 (LCL-UCL) EPA-8260 <br /> Toluene-d8(Surrogate) 102 % 88-110 (LCL.-UCL) EPA-8260 <br /> 4-Bromofluorobenzene(Surrogate) 98.3 % 86-115 (LGL-UCL) EPA-8260 <br /> Run QC <br /> R!jn# Method Prop Date Date/Time Anal)Mt Instrument Dilution Batch ID <br /> I EPA-8260 06/21110 06123/10 02:43 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 entirely. <br /> All results Ikel in this report are for the exclusive use ofthe submitting party BC Laboratories,lne,assumes no responsibility f.,report,Ite,.tiq separation,detachment or third party <br /> interpretation <br /> 4100 Atlas Court Bakersfield,CA 93308 (661)327-4911 FAX(661)327-1918 www.belabs.com Page 24 of 36 <br />