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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 Method20) <br /> Quality Control Repo - Method dank Analysts <br /> Constituent Batch ID QC Sample ID MB Result units PQL. MDL lab Quals <br /> trans-1,4-Dichloro-2-butene BSB0772 BS60772-BLK1 <5.0 ug/L 5.0 <br /> Diisopropyl ether BSBO772 BSB0772-BLK1 <0.50 ug/L 0.50 <br /> Ethanol BSB0772 BSB0772-BLK1 <250 ug/L 250 <br /> ..._._..----.....----.- _........ <br /> — — <br /> Ethyl t-butyl ether BSB0772 BSB0772-BLK1 <0.50 uglL 0.50 <br /> 2-Hexanone BSB0772 BS80772-BLK1 <10 ug/L 10 <br /> Methyl ethyl ketone BSB0772 BSB0772-BLK1 <10 uglL 10 ^ <br /> --.......... <br /> Methyl Iodide BSB0772 BSB0772-BLK1 <2.0 ug/L 2.0 <br /> _—_—..-...... <br /> . - <br /> Methyl isobutyl ketone BSB0772 BS80772-BLK1 <10 ug/L 10 <br /> Vinyl acetate BSB0772 BSB0772-BLK1 <10 uglL 10 <br /> 1,2-Dichioroethane-d4(Surrogate) BSB0772 BS80772-BLK1 103 % 76-114 (LCL-UCL) <br /> Toluene-d8(Surrogate) BSB0772 BSB0772-BLK1 105 % 88-110 (LCL-UCL) <br /> 4-Bromofluorobenzene(Surrogate) BSB0772 BSB0772-BLK1 104 % 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 he reproduced in its entirety. <br /> All results listed in this report arc for the exchisive use of the submitting party. BC Laboratories,Inc.assumes 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.bcfabs.com Page 35 of 36 <br /> Certifications: California-ELAP Certification Number 1186; Nevada Administrative Code-NAC-445A <br />