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® LABORATORIES, INC. <br /> Herst Associates Project: NCYC Reported: 01/03/2008 10:44 <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 Method260) <br /> BCL Sample ID: 0714915-09 Client Sample Name: Trip Blank, 12/13/2007 12:00:OOAM <br /> Prep Run Instru- QC MB Lab <br /> Constituent Result Units PQL MDL Method Date Date/Time Anal st ment ID Dilution Batch ID Bias Quals <br /> t-Butyl alcohol ND ug/L 10 9.3 EPA 8260 12/20/07 12/21/07 08:46 MGC MS-V5 1 BQL1168 ND <br /> _ -_.. _—. _. <br /> -_ __ _..... _._._.. - ..............— . ... _ - ---- -...._ ..—- <br /> Carbon disulfide ND ug/L 1.0 0.40 EPA-8260 12/20/07 12/21/07 08.46 MGC MS-V5 1 BQL1168 ND <br /> -- - -- -- ... _ _ ---.... __ .. .._...__ ............. - . . -...._. _ ........ ........... -....... . -- ..._._ -_.. <br /> trans-1,4-Dichloro-2-butene ND ug/L 5.0 2.0 EPA-8260 12/20/07 12/21/07 0846 MGC MS V5 1 BOLI 168 ND <br /> Diisopropyl ether ND ug/L 0.50 0.21 EPA 8260 12/20/07 12/21/07 08:46 MGC MS V5 1 BQL1168 ND <br /> _._ ... -.._ . _ -.. ..._- ...- ...... .._....... ....- _...._ -- -..- _... _............ .... ... _.. <br /> Ethanol ND ug/L 250 57 EPA-8260 12/20/07 12/21/07 06:46 MGC MS-V5 1 BQL1168 ND <br /> -.... - .... _._..._ ...-- .- -. .. .._. ...._......._.__._ _-.._ - -... — .----...... _... .... .........__.., - - <br /> Ethyl t-butyl ether ND ug/L 0.50 0.22 EPA 8260 12/20/07 12/21/07 08:46 MGC MS-V5 1 BQL1168 ND <br /> . ._.. -_.._ . ... ._- _- .............__......._.--............._--..........-.--..__ ..-.........-.......... ....... . --..... ..._--- ... <br /> 2-Hexanone ND ug/L 10 2.2 EPA-8260 12/20/07 12/21/07 08:46 MGC MS V5 1 B L1 1 <br /> -- --.................._-.............. --.... <br /> Methyl ethyl ketone ND ug/L 10 1.6 EPA 8260 12/20/07 12/21/07 08:46 MGC MS-V5 1 1301-1168 ND <br /> ..... _. ..... --.... _.._.. ..._. _. ........ ...._............- ....... --- -....---.... .. <br /> Methyl iodide ND ug/L 2.0 0.42 EPA 8260 12/20/07 12/21/07 08:46 MGC MS-V5 1 BQL1168 ND <br /> - — <br /> - -- _-...... -..... .-.. ....... - ..._ _. ......I_- . _....__ -..... .................... <br /> Methyl isobutyl ketone ND ug/L 10 3.4 EPA 8260 12/20/07 12/21/07 08:46 MGC MS-V5 1 BQL1168 ND <br /> --....... _._ .. _. .._ .......--... .._.-.. .. .........-- -.........._ - -.-........_-._ _..._. ........... ...........- _, -_ ._ — --- __.... <br /> Vinyl acetate ND ug/L 10 3.4 EPA 8260 12/20/07 12/21/07 08:46 MGC MS-V5 1 BQL1168 ND <br /> - - _... _......... ................ ....._..._.-._...............--------......... ...... __._ .. _............... ...........--..........__ - - ..... <br /> 1,2-Dichloroethane-d4(Surrogate) 114 % 76-114 (LCL-UCL) EPA-8260 12/20/07 12/21/07 08:46 MGC MS-V5 1 BQL1168 <br /> _-........ --._... ..........--...__- . _- -- <br /> Toluene-d8(Surrogate) 98.8 % 88-110 (LCL-UCL) EPA-8260 12/20/07 12/21/07 08:46 MGC MS-V5 1 BQL1168 <br /> -- ........... .... ._ - . .__.... ...... _ _ - ---- . .-----...-..........-- -.. - __ <br /> 4-Bromofluorobenzene(Surrogate) 104 % 86-115 (LCL-UCL) EPA-8260 12/20/07 12/21/07 08:46 MGC MS-V5 1 BQL1168 <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 suhrnitting party.BC Laboratories,Inc.assumes no responsibility for report alteration,separation, detachment or third party interpretation. page 29 of 35 <br /> X00 ourJi&jcersJjWCA91•(66 -491i r(6 27-1918-www s.cotn i r <br />