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Laboratories Inc. i <br /> Environmental Testing Laboratory Since 1949 <br /> Herst Associates Project: NCYC Reported: 06/29/2009 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 (EPA Method 8260) <br /> Quality Control Report - Method Blank Analysis <br /> constituent Batch ID OC Sample ID MB Result Units PQL MDL Lab Quaffs <br /> trans-1-,4-Dichloro-2-butene BSF1839 BSF1839-BLK1 <5.0 ug/L 5.0 <br /> DFisopropyl ether BSF1839 BSF1839-BLI(I <0.50 -I-,.---ugIL 0.50 <br /> Ethanol BSF1839 BSF1839-BLKI <250 ug/L 250 <br /> Ethyl t-butyl ether BSF1839 BSF1839-BLK1 <0.50 ug/L 0.50 <br /> 2-Hexanone BSF1839 BSF1839-BLK1 <10 ug/L 10 <br /> Methyl ethyl ketone BSF1839 BSF1839-BLK1 <10 ug/L 10 <br /> Methyl Iodide BSF1839 BSF1839-BLK1 <2.0 ug/L 2.0 <br /> Methyl isobutyl ketone BSF1839 BSF1839-BLK1 <10 ug/L 10 <br /> Vinyl acetate BSF1839 BSF1839-BLKI <10 ug/L 10 <br /> 1,2-Dichloroethane-d4(Surrogate) BSFI839 BSFI 839-BLKI 102 % 76-114 (LCL-UCL) <br /> Toluene d8(Surrogate) <br /> BSF1839 BSF1839-BLKI 106 % 88-110 (LCL-IJCQ <br /> -—------- —---------- <br /> 4-13romolluorobenzene(Surrogate) BSF1839 BSFI839-BLKI 98.3 % 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 /> responsibility for report alterFAirm,separation,detachment or third party interpretation, <br /> All results listed in this report are for the ewtusive use of the submitting patty. BC Laboratories,inc.assumes no resvonsi Page 35 of 36 <br /> 4100 Atlas Court Bakersfield,CA. 93308 (661)327-4911 FAX(661)327-1918 www.bclabs.com <br /> Certifications: California-ELAN Certification Number 1186; Nevada Administrative Code-NAC-445A <br />