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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 Method 8260) <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 PQL MDL Method Date DatelTime Analyst mentiD Dilution BatchlD Bias Quals <br /> BenzeneND ug/L 0 .... ...... ---._._.. __ _ ............................---................... _1.1......1---- -.- -- - <br /> Bromochloromethane ND ug/L 0.50 0.35 EPA-8260 12/20/07 12/21/07 05:09 MGC MS-V5 1 BQL1168 ND <br /> - -- --- - - -.. ----- ........ -................_ -1111...... ........---- ...---- ....... ---....................... __1111 ....1111--- ., <br /> Bromodichloromethane ND ug/L 0.50 0.30 EPA-8260 12/20/07 12/21/07 05:09 MGC MS-V5 1 BQL1168 ND <br /> -------------_-_.. ...........-_........... ..... ......... _------------------, -- 1.111...__ -. ............._- .......__ ...............................__........._........ <br /> Bromoform ND ug/L 0.50 0.24 EPA-8260 12/20/07 12/21/07 05:09 MGC MS-V5 1 BQL1168 ND <br /> .. - ...- .. .....-- 1111.._.-_ .......... ----------.......................--..........................- ........ <br /> Bromomethane ND ug/L 1.0 0.22 EPA-8260 12/20/07 12/21/07 05:09 MGC MS-V5 1 BQL1168 ND <br /> --_.........- - -- -- .. ......----....................._...--.....................----......._--111.1....._.--...-.. ... <br /> Carbon tetrachloride ND ug/L 0.50 0.19 EPA-8260 12/20/07 12/21/07 05:09 MGC MS-V5 1 BQL1168 ND <br /> - - -- --- -- .....-------....,._.......... --- ._..--- ........_. _..._11------• 1111 .-----------_ -................---1 .,.. -- ---.------ ..---- ----- ..........-- -.. _._......................... <br /> Chlorobenzene ND ug/L 0.50 0.14 EPA-8260 12/20/07 12/21/07 05:09 MGC MS-V5 1 BQL1168 ND <br /> 11..... . ..... _.___.. - --- .._........_ ............-.._......,___1111. .............--- - - --- --...._..._.... ----............- <br /> Chloroethane ND ug/L 0.50 0.25 EPA-8260 12/20/07 12/21/07 05:09 MGC MS-V5 1 BQL1168 ND <br /> ...._..- ..... -...___ - __. - ___----.._ .. ........... <br /> --- -- <br /> Chloroform ND u911- 0.50 023 EPA-8260 12/20/07 12/21/07 05:09 MGC MS-V5 1 BQL1168 ND <br /> ..... --................---...... <br /> 11.1.-- ........ --.. <br /> Chloromethane ND ug/L 0.50 0.20 EPA-8260 12/20/07 12/21/07 05:09 MGC MS-V5 1 BQL1168 ND <br /> --. _.........-- ---._- 11 11 --- _- ..................----.............--•- - .. .. ........................-. ..._............. _ 11.1........1 ....._-111__1_._ _...--..... <br /> .. __- <br /> Dibromochloromethane ND ug/L 0.50 0.23 EPA-8260 12/20/07 12/21/07 05:09 MGC MS-V5 1 BQL1168 N <br /> ........ . - --.... _.-_1111_..__1111 .. -1111.._._...--.. .--.... .. _..._ __. <br /> 1,2-Dibromo-3-chloropropane ND ug/L 1.0 0.46 EPA-8260 12/20/07 12/21/07 05:09 MGC MS V5 1 BQL1168 ND <br /> 9 __... . <br /> ......... _ - - - - ...__.-.. _---- - <br /> 1,2-Dibromoethane ND u /L 0.50 0.29 EPA-8260 12/20/07 12/21/07 05:09 MGC MS-V5 1 BQL1168 ND <br /> ....._.. .... _...........__......... . .... .............. ..__....... ......_....- - -- -_.._ ..---... .._...... ... _._.. ...... <br /> Dibromomethane ND ug/L 0.50 0.37 EPA-8260 12/20/07 12/21/07 05:09 MGC MS-V5 1 BQL1168 ND <br /> -. ........ -- .. ... -- 1111..._ _ ..----- _ __ .._. . ._........ ............-- .----- -...... - 1__111.---..... __ .-- _............. <br /> 1,2-Dichlorobenzene ND u /L 0.50 0.15 EPA-8260 12/20/07 12/21/07 05:09 MGC MS-V5 1 BQL1168 ND <br /> - ---- ----.. - - ......- -.._ .. 9.._.__.. _.__ ....... .._._. _--...___.. _-_ ...._..-_ --.- 11.11.....__- _. _ <br /> 1,3-Dichlorobenzene ND u /L 0.50 0.17 EPA-8260 12/20/07 12/21/07 05:09 MGC MS-V5 1 BQL1168 ND <br /> - .--.._. -- -..............._._.-_..._----_----------------------.......--._._.........................- .. ..................._... ... .. .. <br /> 1,4-Dichlorobenzene ND ug/L 0.50 0.17 EPA-8260 12/20/07 12/21/07 05:09 MGC MS-V5 1 BQL1168 ND <br /> -- ......------- .. ......... ......_ ..._.--------......_ -- -------------- ---- .-1.1....11. .............. ................................._. --- ...... .----......................-.............11...-........_......... <br /> Dichlorodifluoromethane 0.83 ug/L 0.50 0.21 EPA-8260 12/20/07 12/21/07 05:09 MGC MS-V5 1 BQL1168 ND <br /> _-1111... .... ----.._. ... ........ .1..._.111.- _---------------.- ------------ ----._...............................__..............._1-- -- „_ ---- - ._.-1111_- ..........._-._.. ._.. - -1111.. <br /> 1,1-Dichioroethane ND ug/L 0.50 0.13 EPA-8260 12/20/07 12/21/07 05:09 MGC MS-V5 1 BQL1168 ND <br /> ---.- ....................... ._._ -._ 1111..- _-.. ..-- ._ <br /> -- ... - <br /> 1,2-Dichloroethane ND u9/L 0.50 0.24 EPA-8260 12/20/07 12/21/07 05:09 MGC MS-V5 1 BQL1168 <br /> - --.- .. ... ............. _. _. ._ ..... -_.._ _..-._._. -- ------- 1111..-- -- <br /> 1,1 Dichloroethene ND u /L 0.50 0.16 EPA-8260 12/20/07 12/21/07 05:09 MGC MS-V5 1 BQL1168 ND <br /> ... ---......... ..9_,- ...... . ._._.... - _._. <br /> . . ... _.. .... <br /> cis-1,2-Dichloroethene ND u /L 0.50 0.32 EPA-8260 12/20/07 12/21/07 0509 MGC MS-V5 1 BQL1168 ND <br /> _.. ....... .1 .1..1.1. ... ... _.._.1..1.1...1.-1111...._ ........ _11.11..._ _1_111 ._.--_111,1 - - - <br /> trans-1,2-Dichloroethene ND ug/L 0.50 0.14 EPA-8260 12/20/07 12/21/07 05:09 MGC MS-V5 1 BQL1168 ND <br /> BC Laboratories The results in this report apply to the sampler anab} ed in accordance with the chain of custody document.7hls•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. 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