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Laboratories Inc. <br /> Environmental Testing Laboratory Since 1949 <br /> Herst Associates Project: NCYC Reported: 02/12/2009 13:44 <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 Methodo) <br /> BCL Sample ID: 0901769-05 Client Sample Name: Well#4 Duplicate,2/5/2009 1:40:OOPM, David Vasbinder <br /> Prep Run Instru- QC MB Lab <br /> Constituent Result units f QL MDL Method Date Date/time Analyst ment ID Dilution Batch ID Bias Quals <br /> t-Butyl alcohol <10 ug/L 10 EPA-8260 02/11/09 02/11109 21:19 MGC MS-V5 1 BSB0772 NO <br /> — <br /> --------—..... <br /> Carbon disulfide <1.0 ug/L 1.0 EPA-8260 02/11/09 02/11/09 21:19 MGC MS-V5 1 BSB0772 NO <br /> trans-1,4-Dichloro-2-butene <5.0 ug/L 5.0 EPA-8260 02/11/09 02/11/09 21:19 MGC MS-V5 1 BS60772 NO <br /> Diisopropyl ether <0.50 ug/L 0.50 EPA-8260 02111/09 02111/09 21:19 MGC MS-V5 1 BSBO772 NO <br /> Ethanol <br /> <250 ug/L 250 EPA-8260 02/11/09 02/11/09 21:19 MGC MS-V5 1 BSBO772 NO <br /> Ethyl t-butyl ether <0.50 ug/L 0.50 EPA-8260 02/11/09 02/11/09 21:19 MGC MS-V5 1 BSBO772 NO <br /> 2-Hexanone <10 ug/L 10 EPA-6260 02/11/09 02/11/09 21:19 MGC Ms-V5 1 BSBO772 NO <br /> Methyl ethyl ketone <10 ug/L 10 EPA-8260 02/11/09 02111/09 21:19 MGC MS-V5 1 BSBO772 NO <br /> Methyl iodide <2.0 ug/L 2.0 EPA-8260 02/11109 02/11/09 21:19 MGC MS-V5 1 BS80772 NO <br /> Methyl isobutyl ketone <10 ug/L 10 EPA-8260 02/11/09 02/11/09 21:19 MGC MS-V5 1 BSBO772 NO <br /> Vinyl acetate <10 ug/L 10 EPA-8260 02/11/09 02/11/09 21:19 MGC MS-V5 1 BSB0772 NO <br /> ---------— -- — <br /> 1,2-Dichloroethane-d4(Surrogate) 104 % 76-114 (LGL-UCL) EPA-8260 02/11/09 02/11/09 21:19 MGC MS-V5 1 BSB0772 <br /> Toluene-d8(Surrogate) 101 % 88-110 (LCL-UCL) EPA-8260 02/11/09 02/11/09 21:19 MGC MS-V5 1 BSB0772 <br /> 4-13romofluorobenzene(Surrogate) 99.2 % 86-115 (LCL-UCL) EPA-8260 02/11/09 02/11/09 21:19 MGC MS-V5 1 BSB0772 <br /> The results in this report apply to the samples analyzed in accordance with the chain of custody document.This analytical report mast he reproduced in its entirety. <br /> All results listed in this report arc for the exclusive use of the submitting party. HC laboratories,Inc.asstmres 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.bclabs.com Page 18 of 36 <br /> ® ® ® <br /> Certifications: <br /> ®tions: California-ELAP Certification Number 1186; Nevada Administrative Code-NAC-445A <br />