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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 Method 6260) <br /> BCL Sample ID: 0714915-02 Client Sample Name: Well 4 Duplicate, 12/13/2007 8:47:OOAM <br /> Prep Run instru- QC MB Lab <br /> Constituent Result Units P L MDL Method Date Date/Time Analyst 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 05:09 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 05:09 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 05:09 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 05:09 MGC MS-V5 1 BQL1168 ND <br /> . ..._..__...... ........._ .-...._..-----_...............--.-..___..---._----- __ ------ ...... .......... .---- ........--- _...--i---. .._...---._.__-•___... - ---- <br /> Ethanol ND ug/L 250 57 EPA-8260 12/20/07 12/21/07 05:09 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 05:09 MGC MS-V5 1 BQL1168 ND <br /> --- _ <br /> ............... .._._ _...............----...._----- -- ............— .......... —... _—..............._..........................- .............__._. <br /> 2-Hexanone ND ug/L 10 2,2 EPA-8260 12/20/07 12/21/07 05:09 MGC MS-V5 1 BQL1168 ND <br /> --- - .. ... ..._..... ... .....--- —.._... .—._......... ............ .. ...--...... -.....................---..... ........ ___ ..._._ ... .... <br /> Methyl ethyl ketone ND ug/L 10 1.6 EPA-8260 12/20/07 12/21/07 05:09 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 05:09 MGC MS-V5 1 BQL1168 ND <br /> - .._ .. - --.... .. —. - -- — _._. -- -..._..........--. ..........._..--- ........._---. . ....._— .........._...........--.. ...--._............_ ..... .. <br /> Methyl isobutyl ketone ND ug/L 10 3.4 EPA-8260 12/20/07 12/21107 05:09 MGC MS V5 1 BQL1168 ND <br /> ..-...._. . ---....-- ...._....._.. — -...... _... _ . .. <br /> ...._ ..... —..... ... <br /> _—. . -- .... -— ..._—. <br /> Vinyl <br /> acetate ND ug/L 10 3.4 EPA-8260 12/20/07 12/21/07 05:09 MGC MS V5 1 B01-1 1:68 ND <br /> —... ._.... -- -..._ —— ... ......... .... . ....._—._....._----- ... .. —- -----_ --... ....—. ...........—_. . _..__-...................._..---.._. _... — ... ------------------ <br /> 1,2-Dichloroethane-d4(Surrogate) 112 % 76-114 (LCL-UCL) EPA-8260 12/20/07 12/21/07 05:09 MGC MS-V5 1 BQL1168 <br /> _ ........_... ........— -._.._._... .................. .__...........__..__.._. ...----. ...—_........... - — _. .. <br /> Toluene-d8(Surrogate) 100 % 88-110 (LCL-UCL) EPA-8260 12/20/07 12/21/07 05:09 MGC MS-V5 1 BQL1168 <br /> 4-Bromofluorobenzene(Surrogate) 101 % 86-115 (LCL-UCL) EPA-8260 12/20/07 12/21/07 05:09 MGC MS-V5 1 BQL1 i68 <br /> BC Laboratories The results in this report apply to the samples anal)-:ed 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 8 of 35 <br /> 4100 Atlas Court•Bakersfield,CA 93308•(661)327-4911 «FAX(661)327-1918 a www.bclabs.com <br />