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= M = M = = = M M M M = M M M = M M = <br /> :W LABORATORIES, INC. <br /> Herst Associates Project: NCYC Reported- 03/0312008 14:50 <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 /> JConstituent Batch ID QC Sample ID MB Result Units POL MDL Lab Quals <br /> trans-1,4-Dichloro-2-butene BRB1714 BRB1714-BLK1 ND ug/L 5.0 2.0 <br /> ............................... ......................................................... <br /> Diisopropyl ether BRB1714 BRB1714-BLKI ND ug/L 0.50 0.18 <br /> ........................ ------------------....................................... <br /> Ethanol BRB1714 BRB1714-BLK1 ND ug/L 250 57 <br /> ............ -----------------. <br /> Ethyl t-butyl ether BRB1714 BRB1714-BLK1 ND— ug/L 0.50 0.22 <br /> ----------------------------------- ----------- - <br /> ---—----------- ........................... <br /> 2-Hexanone BRB1714 BRB1714-BLK1 ND ug/L 10 2.5 <br /> ............ ........................................ .............. <br /> Methyl ethyl ketone BRB1714 BRB1714-BLKI. ND ug/L 10 1.6 <br /> -------------------------------------- ........... ...... ------------ <br /> Methyl Iodide BRB1714 BRB1714-BLK1 ND ug/L 2.0 0.42 <br /> ................................................ ................................................ <br /> ........ ......................... <br /> Methyl isobutyl ketone BRB1714 BRB1714-BLKI ND ug/L 10 3.4 <br /> ................ ........ . .......................... <br /> Vinyl acetate BR81714 BR81714-BLKI ND ug/L 10 3.1 <br /> ...............—-------- ..............— -- <br /> 1,2-Dlchloroethane-d4(Surrogate) BRB1714 BRB1714-BLKI 104 % 76-114 (LCL-UCL) <br /> ................ <br /> Toluene-d8(Surrogate) BRB1714 BRB1714-BLK1 99.4 % 88-110 (LCL-UCL) <br /> .................................. ......-------....----------------- ............................. <br /> 4-Bromofluorobenzene(Surrogate) BRB1714 BRB1714-BLK1 99.0 % 86-115 (LCL-UCL) <br /> —-------------------.............--.........------ ................................. <br /> BC Laboratories 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 entirely. <br /> All results listed in this report are for the exclusive use of the submitting party.BC Laboratories,Inc.assumes no responsibility for report alteration,separation, detachment or third party interpretation. Page 34 of 35 <br /> 41.00 Atlas Court*Bakersfield,CA 93308-(661)3274911 -FAX(661)327-1918-www.bclabs.com <br />