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M Laboratories Inc. <br /> .laboratories <br /> �La!o!ratortySince 1949 <br /> � <br /> Environmental Testing <br /> Herst Associates Project: NCYC Reported: 12/15/2008 14:52 <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 Method 8260) <br /> Quality Control Report - Method Blank Analysis <br /> Constituent Batch ID QC Sample ID MB Result Units POL MDL Lab Quals <br /> trans-1,4-DicNoro-2-butene BRL0867 BRL0867-BLKI <5.0 ug/L 5.0 <br /> Dlisopropyl ether BRL0867 BRL0867-BLKI <0.50 ug/L 0.50 <br /> Ethanol BRL0867 BRL0867-BLKI <250 ug/L 250 <br /> Ethyl t-butyl other BRL0867 BRL0867-BLK1 <0.50 ug/L 0.50 <br /> 2-Hexanone BRL0867 BRL0867-BLKI <10 ug/L 10 <br /> Methyl ethyl ketone BRL0867 BRL0867-BLK1 <10 ug/L 10 <br /> ............ <br /> Methyl iodide BRL0867 BRL0867-BLK1 <2.0 ug/L 2.0 <br /> Methyl isobutyl ketone BRL0867 BRL0867-BLK1 <10 ug/L 10 <br /> Vinyl acetate BRL0867 BRL0867-BLKI <10 ug/L -10 <br /> 1,2-Dichloroethane-d4(Surrogate) BRL0867 BRL0867-BLK1 104 % 76-114 (LCL-UCL.) <br /> –—-------- <br /> Toluene-d8(Surrogate) BRL0867 BRL0867-BLKI 98.3 % 88-110 (LCL-UCL) <br /> 4-Bromofluorobenzone(Surrogate) BRL0867 BRL0867-BLKI 103 % 86-115 (LCL-UCL) <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 pats. BC Laboratories,Inc.assumes oo resrmnsibilitv for report alteration,separation,detachment or third party intcrprotmion- <br /> 4100 Atlas Court Bakersfield,CA 93308 (661)327-4911 FAX(661)327-1918 www.bclabs.com Page 35 of 36 <br /> Certifications: California-ELAP Certification Number 1186; Nevada Administrative Code-NAC-445A <br />