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Laboratories Inc. <br /> Environmental Testing Laboratory Since 1949 <br /> Herst Associates Project: NCYC Reported: 09/12/2008 11:00 <br /> 4630 South Highway 94 North Outer Road Project Number: NCYCC VOC Samples <br /> Saint Charles, MO 63304 Project Manager: David Vasbinder <br /> Volatile Organic Analysis (EPA Method 260) <br /> BCL Sample ID: 0811973-02 Client Sample Name: Well#4 Duplicate,9/9/2008 2:15:OOPM <br /> Prep Run Instru- QC MB Lab <br /> Constituent Result Units PQL MDL Method Date Daterrime Analyst ment ID Dilution Batch ID Bias Quals <br /> t-Butyl alcohol <10 ug/L 10 EPA-8260 09/11108 09/11/08 23:32 MGC MS-V5 1 BR10710 ND <br /> Carbon disulfide <1.0 ug/L 1.0 EPA-8260 09/11/08 09/11/08 23:32 MGC MS-V5 1 BR10710 ND <br /> trans-1 A-Dich lo ro-2-b utene <5.0 ug/L 5.0 EPA-8260 09/11/08 09/11108 23:32 MGC MS-V5 1 BR10710 ND <br /> Diisopropyl ether <0.50 ug/L 0.50 EPA-8 09/11/08 09/11/08 23:32 MGC MS-V5 1 BR10710 ND <br /> Ethanol <250 ug/L 250 EPA-8260 09/11108 09/11/08 23:32 MGC MS-V5 1 BRIO710 ND <br /> Ethyl t-butyl ether <0.50 ug/L 0.50 EPA-8260 09/11/08 09/11/08 23:32 MGC MS-V5 1 BR10710 ND <br /> 2-Hexanone <10 ug/L 10 EPA-8260 09111/08 09/11/08 23:32 MGC MS-V5 1 BR10710 ND <br /> Methyl ethyl ketone <10 ug/L 10 EPA-8260 09/11/08 09/11/08 23:32 MGC MS-V5 1 BR10710 ND <br /> Methyl iodide <2.0 ug/L 2.0 EPA-8260 09111108 09/11/08 23:32 MGC MS-V5 1 BR10710 ND <br /> Methyl isobutyl ketone <10 ug/L 10 EPA-8260 09/11/08 09/11/08 23:32 MGC MS-V5 1 BRI0710 ND <br /> Vinyl acetate <10 ug/L 10 EPA-8260 09/11/08 09/11/08 23:32 MGC MS-V5 1 BRIO710 ND <br /> 1,2-Dichloroethane-d4(Surrogate) 112 % 76-114 (LCL-UCL) EPA-8260 09/11/08 09/11/08 23:32 MGC MS-V5 1 BRI0710 <br /> Toluene-d8(Surrogate) 102 % 88-110 (LCL-UCL) EPA-8260 09/11/08 09111/08 23:32 MGC MS-V5 1 BRIO710 <br /> 4-Bromofluorobenzene(Surrogate) 102 % 86-115 (LCL-UCL) EPA-8260 09/11/08 09/11/08 23:32 MGC MS-V5 1 BRI0710 <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 the exclusive use of the submitting party. BC Laboratories,Inc.assumes no responsibility for reportalteration,separation,detachment or third party interpretation. <br /> 4100 Atlas Court Bakersfield,CA 93308 (681)327-4911 FAX(661)327-1918 www.bclabs.com Page 9 of 36 <br /> Certifications: California-ELAP Certification Number 1186; Nevada Administrative Code-NAC-445A <br />