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® LABORATORIES, INC. <br /> Horst Associates Project: Misc.Samples Reported: 10/23/2007 12:20 <br /> 4630 South Highway 94 North Outer Road Project:Number: NCYC <br /> Saint Charles, MO 63304 Project Manager: David Vasbinder <br /> Volatile r anis Analysis (EPA Method 8260) <br /> BCL Sample ID: 0712044-03 Client Sample Name: FIELD BLANK @ WE:LL#4/CYA#4, 10/11/2007 9:35:00AM <br /> Prep Run Instru- QC MB Lab <br /> Constituent Result Units PQL MDL Method Date Date/Time Analyst rnent ID Dilution Batch ID Bias Quals <br /> t-Butyl alcohol <10 ug/L 10 EPA-8260 10/19/07 10120/07 12:50 MGC MS V5 1 BQJ1250 ND V11 <br /> _. ---.._.._. ---- ._.__.—- -- _._..—._. _. _.........--— ..............-.--_....... ---- <br /> Carbon disulfide <1.0 ug/L 1.0 EPA-8260 10/19/07 10/20/07 12.50 MGC MS-V5 1 BQJ1250 ND <br /> - -g._. ......_ — —..... .............---. _ _..... <br /> trans-1,4 Dichioro-2-butene <5.0 u /L 5.0 EPA-8260 10/19/07 10/20/07 12:50 MGC MS-V5 1 BQJ1250 ND <br /> -- _._. .. .. .. _. _... - -.._.. _ —_..._.. <br /> ..... <br /> Diisopropyl ether <0.50 ug/L 0.50 EPA-8260 10/19/07 10/20/07 12:50 MGC MS-V5 1 BQJ1250 ND V11. <br /> Ethanol <250 ug/L 250 EPA-8260 10/19/07 10/20/07 12:50 MGC MS-V5 1 BQJ1250 ND <br /> -................._ ........ . __ ._.__. ...._ ..... .. _.. . .. .. _........._.- .. - .... __.._..__ .. _.-._.. _.._. —. - <br /> Ethyl t-butyl ether <0.50 ug/L 0.50 EPA-8260 10/19/07 10/20/07 12.50 MGC MS-V5 1 BQJ1250 ND V 1 1.1-1 <br /> _._. -- .. .......... ---....... <br /> 2-Hexanone <10 ug/L 10 EPA-8260 10/19/07 10/20/07 12.50 MGC MS-V5 1 BQJ1250 ND V11 <br /> ..------ _..... _ ---.... __._ _._ --._.- ------- <br /> Methyl ethyl ketone <10 ug/L 10 EPA-8260 10/19/07 10/20/07 12.50 MGC MS-V5 1 BOJ1250 ND V11 <br /> .......-._........--.--- -- . ---- — .... ... —_... ---.. __.__._.._ <br /> Methyl iodide <2.0 ug/L 2.0 EPA-8260 10/19107 10/20/07 12:50 MGC MS-V5-1.1 1 1391J-1-250 ND V11 <br /> _....— -...._._......-_.. .... ....--- — —1-- <br /> Methyl <br /> .-. _........ ..---..._. - -. . <br /> Methyl isobutyl ketone <10 ug/L 10 EPA-8260 10/19/07 10/20/07 12:50 MGG MS-V5 1 BQJ1250 ND V11 <br /> -------- <br /> Vinyl.. acetate — ---<10 ug/L_ 10 .. - .. ---EPA-B.._. ...... -. _ .. . ._.. -- _............ --.... <br /> 260 10/19/07 10/20/07 12:50 MGC MS-V5 1 BQJ1250 ND <br /> --- -- - __ ......._.. — --- __.._. .... ......__.. <br /> 1,2-Dichloroethane-d4(Surrogate) 97.6 % 76 114 (LCL-UCL) EPA-8260 10/19/07 10/20/07 12:50 MGC MS-V5 1 BQJ1250 <br /> Toluene-d8(Surrogate) 99.7 % 88-110 (LCL-UCL) EPA-8260 10/19/07 10/20/07 12:50 MGC MS-V5 1 BOJ1250 <br /> 4-Bromofluorobenzene(Surrogate) 94.3 % 86-115 (LCL-UCL) EPA-8260 10/19/07 10/20/07 12:50 MGC MS-V5 1 BQJ1250 <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 entirety. <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 11 of 32 <br /> 4100 Atlas Court•Bakersfield,CA 93308.(661)327-4911 o FAX(661)327-1918•www.bclabs.com <br />