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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 Analysis (EPA Method8260) <br /> BCL Sample ID: 0712044-01 Client Sample Name: WELL#2/CYA#2, 10/11/2007 9:19: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 11:48 MGC MS-V5 1 BQJ1250 NO V11 <br /> — _1111 __1.111... —. __.._ _. .......... _.._ . .. <br /> Carbon disulfide <1.0 ug/L 1.0 EPA-8260 10/19/07 10/20/07 11:48 MGC MS-V5 1 BQJ1250 NO <br /> --... - . g . .._ <br /> trans-1,4-Dichloro-2-butene <5.0 u /L 5.0 EPA-8260 10/19/07 10/20/07 11:48 MGC MS-V5 1 BQJ1250 NO <br /> Diisopropyl ether <0.50 ug/L 0.50 EPA-8260 10/19/07 '10/20/07 11:48 MGC MS-V5 1 BQJ1250 NO V11 <br /> _.111.1..........111 -- .-... <br /> Ethanol <250 ug/L 250 EPA-8260 10/19/07 10/20/07 11:48 MGC MS-V5 1 BQJ1250 NO <br /> _ _. _ _.. _._........ <br /> Ethyl t-butyl ether <0.50 ug/L 0.50 EPA-8260 10/19/07 10/20/07 11:48 MGC MS-V5 1 BQJ1250 NO V11 <br /> ......................... — _.. .. ....., <br /> 2-Hexanone <10 ug/L 10 EPA-8260 10/19/07 10/20/07 11:48 MGC MS-V5 1 BQJ1250 ND V11 <br /> ----.-......... <br /> Methyl ethyl ketone <10 ug/L 10 EPA-8260 10/19/07 10/20/07 11:48 MGC MS-V5 1 BOJ1250 NO V11 <br /> ................_,..._ .. — <br /> Methyl iodide <2.0 ug/L 2.0 EPA-8260 10/19107 10/20/07 11:48 MGC MS-V5 1 BQJ1250 ND V11 <br /> — — .. ......... <br /> Methyl isobutyl ketone <10 ug/L 10 EPA-8260 10/19/07 10/20/07 11:48 MGC MS-V5 1 BQJ1250 ND V 11 1-1 <br /> - ... __._........ . ..------.. 1111. - — __1111..-- _ 11.11___.. —_ - . <br /> Vinyl acetate <10 ug/L 10 EPA-8260 10/19/07 10/20/07 11:48 NiGC MS-V5 1 BOJ1250 NO <br /> 11 1 ... ...... .... . ... . _.._. .... ..1111.- .. .. - ... 1111.._. .. -- —_. __. .. .. ...-------. . ......_... ........_. <br /> 1,2-Dichloroethane-d4(Surrogate) 104 % 76-114 (LCL-UCL) EPA-8260 10/19/07 10/20/07 11:48 MGC MS-V5 1 BQJ1250 <br /> _._...... __._. --.. ....... <br /> Toluene-i8(Surrogate) 102 % 88-110 (LCL-UCL) EPA-8260 10/19/07 10/20/07 11:48 MGC MS-V5 1 BQJ1250 <br /> ..--..... — <br /> 4-Bromofluorobenzene(Surrogate) 98.5 % 86-115 (LCL-UCL) EPA-8260 10/19/07 10/20/07 11:48 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 5 of 32 <br /> 4100 Atlas Court•Bakersfield,CA 93308•(661)3274911 •FAX(661)327-1918•www.bclabs.com <br />