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LABORATORIES, INC. <br /> Herst 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 Organic Anal Method 8260) <br /> BCL Sample ID: 0712044-04 Client Sample Name: WELL#4/CYA#4, 10/11/2007 9:50:OOAM <br /> Prep Run Instru- QC MB Lab <br /> Constituent Result Units PQL MDL Method Date Date/Time Analyst ment ID Dilution Batch ID Bias Quals <br /> t-Butyl alcohol <10 ug/L 10 EPA-8260 10/19/07 10/20/07 13:21 MGC MS-V5 1 BQJ1250 ND V11 <br /> Carbon disulfide <1,0 ug/L 1.0 EPA-8260 10/19/07 10/20/07 13:21 MGC MS-V5 1 BQJ1250 ND <br /> —.... <br /> -- . _...._.._._ ......... -- — — <br /> trans-1,4-Dichloro-2-butene <5.0 ug/L 5.0 EPA-8260 10/19/07 10/20107 13-21 MGC MS-V5 1 BQJ1250 ND <br /> ...----..... —.......... .... — - - — — .... — <br /> Diisopropyl ether <0.50 ug/L 0.50 EPA 8260 10/19/07 10/20/07 13.21 MGC MS V5 1 BQJ1250 ND V11 <br /> ..................... ._.. ..... —... ..........------ - . . . ----.., _ —_..... ... <br /> Ethanol <250 ug/L 250 EPA-8260 10/19107 10/20/07 13:21 MGC MS-V5 1 BQJ1250 ND <br /> Ethyl t-butyl ether <0.50 ug/L 0.50 EPA 8260 10/19/07 10/20/07 13:21 MGC MS-V5 1 BQJ1250 ND V11 <br /> ..... <br /> 2-Hexanone <10 ug/L 10 EPA-8260 10/19/07 10/20/07 13:21 MGC MS V5 1 BOJ1250 ND V11 <br /> ------ _.... —.._..... . — - — - — __ <br /> Methyl ethyl ketone <10 ug/L 10 EPA 8260 10/19/07 10/20/07 13:21 MGC MS-V5 1 BQJ1250 ND V11 <br /> Methyl iodide <2.0 ug/L 2.0 EPA-8260 10/19/07 10/20/07 13:21 MGC MS V5 1 BOJ1250 ND V11 <br /> - -.._. __...... .. -.._..- ---- <br /> Methyl isobutyl ketone <10 ug/L 10 EPA-8260 10/19/07 10/20/07 13:21 MGC MS-V5 1 BQJ1250 ND V11 <br /> Vinyl acetate <10 ug/L 10 EPA 8260 10/19/07 10/20/07 13:21 MGC MS-V5 1 BQJ1250 ND <br /> ..--..............-........... -..__ ........-_...--- .............---. ............... ..........._—...... <br /> .....- ---_ --- — <br /> 1,2-Dichlotoethane-d4(Surrogate) 102 % 76-114 (LCL-UCL) EPA-8260 10/19/07 10/20/07 13:21 MGC MS V5 1 BQJ1250 <br /> __. .... _. ---.. ...........--...... -..... ._ .-... —...._.. . .... —... ---. _. ..... <br /> Toluene-d8(Surrogate) 98.7 % 88-110 (LCL-UCL) EPA-8260 10/19/07 10/20/07 13.21 MGC MS-V5 1 BQJ1250 <br /> —........................... .........- ---.... .. ------- -.. .._..__.. _-....._.—. —.. .-..__,... ....... — ........ _... _ <br /> 4-Bromofluorobenzene(Surrogate) 101 % 86-115 (LCL-UCL) EPA-8260 10/19/07 10/20/07 13:21 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 nuist 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 14 of 32 <br /> 4100 Atlas Court•Bakersfield,CA 93308•(661)327-4911 •FAX(661)327-1918•www.bclabs.com <br />