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Labor'ator'ies Inc. <br /> Environmental Testing Laboratory Since 1949 <br /> Herst Associates Project: NCYC Reported., 06/292009 15:28 <br /> 4630 South Highway 94 North Outer Road Project Number: Monthly <br /> Saint Charles, MO 63304 Project Manager: Erin Fanning <br /> Volatile Organic Analysis Method 8263) <br /> BCL Sample ID: 0908251-09 Client Sample Name: Trip Blank,6/23/2009 12:00:OOAM <br /> Prep Run lnstru- QC NIB Lab <br /> Constituent Result Units PQL MDL Method Date Datetfime Analyst ment tD Dilution Batch ID Bias Quals <br /> t-Butyl alcohol <10 ug/L 10 EPA-8260 06/28/09 06129/09 02:28 MGC MS-V5 1 BSF1839 NO <br /> —. ........ <br /> Carbon disulfide <1.0 ug/L 1.0 EPA-8260 06/28/09 06/29/09 02:28 MGC MS-V5 1 BSF1839 NO <br /> trans-1,4-Dichloro-2-butene <5.0 ug/L 5.0 EPA-8260 06128/09 06/29/09 02:28 MGC MS-V5 1 BSF1839 NO <br /> Diisopropyl ether <0.50 ug/L 0.50 EPA-8260 06/28/09 06129/09 02:28 MGC MS-V5 1 BSF1839 <br /> NO <br /> Ethanol <250 ug/L 250 EPA-8260 06/28/09 06/29/09 02:28 MGC- MS-V5 1 BSF1839 N.D - <br /> Ethyl t-butyl ether <0.50 ug/L 0.50 EPA-8260 06/28/09 06/29/09 02:28 MGC MS-V5 1 BSF1839 N <br /> 2-Hexanone <10 ug/L 10 EPA-8260 06/28/09 06/29/09 02:28 MGC MS-V5 1 B F1 <br /> Methyl ethyl ketone <10 ug/L 10 EPA-8260 06/28/09 06/29/09 02:28 MGC MS-V5 1 BSF1839 <br /> Methyl iodide <2.0 ug/L 2.0 EPA-8260 06/28/09 06/29/09 02:28 MGC MS-V5 1 BSF1839 <br /> Methyl isobutyl ketone <10 ug/L 10 EPA-8260 06/28/09 06/29/09 02:28 MGC MS-V5 1 BSF1839 ND <br /> Vinyl acetate <10 ug/L 10 EPA-8260 06/28/09 06/29/09 02:28 MGC MS-V5 1 BSF1839 NO <br /> _._..-------- —...- -- <br /> 1,2-Dichloroethane-d4(Surrogate) 106 %, 76-114 (LGL-UCL) EPA-8260 06128/09 06/29/09 02:28 MGC MS-V5 1 BSF1839 <br /> Toluene-d8(Surrogate) 101 % 88-110 (LGL-UCL) EPA-8260 06128/09 06/29/09 02:28 MGC MS-V5 1 SSF183 <br /> 4-Bromofluorobenzene(Surrogate) 101 % 86-115 (LCL-UCL) EPA-8260 06/28109 06/29/09 02:28 MGC MS-V5 1 BSF1839 <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 ate 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 <br /> 30 of 36 <br /> 4100 Atlas Court Bakersfield,CA 93308 (661)327-4911 FAX(661)327-1918 www.bclabs.com <br /> Certifications: California-ELAP Certification Number 1186; Nevada Administrative Code-NAC-445A <br />