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LABORATORIES, INC. <br /> Hers'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 Method8260) <br /> BCL Sample ID: 0714915-05 Client Sample Name: Well 2/CYA 2, 12/13/2007 9:20:OOAM <br /> Prep Run Instru- QC MB Lab <br /> Constituent Result Units PQL MDL Method Date DatelTime Analyst ment.ID Dilution Batch lD Bias Quaffs <br /> t-Butyl alcohol ND ug/L 10 9.3 EPA-8260 12/20/07 12/21/07 06:42 MGC MS-V5 1 BQL1168 ND <br /> ......-- --- _.._____,. ,._--._-............ ... . ......_. .........._............-- -.._.......... <br /> Carbon disulfide ND ug/L 1.0 0.40 EPA-8260 12/20/07 12/21/07 06.42 MGC MS-V5 1 601-1168 ND <br /> ._ <br /> . .-- -.. ...__..._ - - - .._ _...-_. _......_ . <br /> .._.................-_ ... <br /> ; .._.... .__._ . --- _.. .._-..._ .. --.----- ... - ...._ ..-_..... <br /> trans-l,4-Dichloro-2-butene ND ug/L 5.0 2.0 EPA-8260 12/20/07 12/21/07 06*42 MGC MS-V5 1 BQL1168 ND <br /> - - ---- -- . _ ......... _-..._..................-... -....._ -............._...........__.. _._.-......--. -__... - -- .. ..._ -.................... -- <br /> Diisopropyl ether ND ug/L 0.50 0.21 EPA-8260 12/20/07 12/21/07 06:42 MGC MS-V5 1 BQL1168 ND <br /> .. _. ...... .... -- _.__. ..._......_ .....-__.......-_.......-._-........,..... ........ ... _...........-.... _-.............._...__.-.._.-.. _ ..- - _................- -- -............. <br /> Ethanol ND ug/L 250 57 EPA-8260 12/20/07 12/21/07 06:42 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 06:42 MGC MS-V5 1 BOO 168 ND <br /> - ....._....... - - . ......._. ..._--__...._.-._.......-.............._ .... - ......-- -_-....-......__.. - ----.._.. -....__ <br /> 2-Hexanone ND ug/L 10 2.2 EPA-8260 12/20/07 12/21/07 06:42 MGC MS-V5 1 BQL1168 ND <br /> --...._. _...._. ..... _ .__._ _... - .... ..._._................--.. .........- ......-............._.............._....._....... __.. ----------- ............ -._............. - <br /> Methyl ethyl ketone ND uglL 10 1.6 EPA-8260 12/20/07 12/21/07 06:42 MGC MS-V5 1 BQL1168 ND <br /> - -....._.__... --....._-_...... - .... .-_......... _............__...........---_..........................._._... - - - --------- <br /> Methyl iodide ND ug/L 2.0 0.42 EPA-8260 12/20/07 12/21/07 06:42 MGC MS-V5 1 BQL1168 ND <br /> .........._ ...... _..- . --_............_.............. ---....... .---- -_.. ......... --...........-..._._..- .....- ...._-.. -- <br /> Methyl isobutyl ketone ND ug/L 10 3.4 EPA-8260 12/20/07 12/21/07 06:42 MGC MS-V5 1 BQL1168 ND <br /> -....-...-.._..... -_ --..... _.-_._......- __.__... -- - -..._. <br /> Vinyl acetate ND ug/L 10 3.4 EPA-8260 12/20/07 12/21/07 06.42 MGC MS-V5 1 BQL1168 ND <br /> ............ ......._- .........----- -- -... ............--......_.................._........ ----- <br /> 1,2 Dichioroethane-d4(Surrogate) 111 % 76-114 (LCL-UCL) EPA-8260 12/20/07 12/21/07 06:42 MGC MS-V5 1 BOO 168 <br /> ..._.__............._._................... ............ - -..-..._. _..._..........-------_................. .-......... .... _ _ _ <br /> Toluene-d8(Surrogate) 100 % 88-110 (LCL-UCL) EPA-8260 12/20/07 12/21/07 06.42 MGC MS-V5 1 BQLl 168 <br /> -----..... ..__ . ... __ _ _.... ... --._. _..__._.. ._..,_ .. ..--. ....__.............__._. .. .._..... ............... .... ...._ -..__ ........_............ ..........- ........--- <br /> 4-Bromofluorobenzene(Surrogate) 105 % 86-115 (LCL-UCL) EPA-8260 12/20/07 12/21/07 06:42 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 ofthc submitting party.BC Laboratories,Inc.assumes no responsibility for report alteration,separation, detachment or third party interpretation. Page 17 of 35 <br /> VNN00 AWourWlWersf A 9 •(661111-49 JJW( 27-12JWww bs.co <br />