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® Laboratories Inc. <br /> Environmental Testing Laboratory Since 1949 <br /> Herst Associates Reported: 06/23/2010 12:34 <br /> 4630 South Highway 94 North Outer Road Project Austin Road/NCYCC Drilling <br /> Saint Charles,MO 63304 Project Number <br /> - ---- - Project Manager. Erin Fanning <br /> Volatile Organic Analysis (EPA Method8260) <br /> SCt_Saampla ID: 1005252-02 !Client Sample Name: AMW-29,6/14/2010 9:25:00AM <br /> MB Lata <br /> Constituent Result Units PQL MDL Method Bias Qualls Run# <br /> Styrene NO ug/L 0.50 0.093 EPA-8260 NO 1 <br /> 1,1,1,2-Tetrachloroethane NO ug/L 0.50 0.11 EPA-8260 NO 1 <br /> 1,1,2,2-Tetrachloroethane NO ug/L 0.50 0.14 EPA-8260 NO 1 <br /> Tetrachloroethene 0.39 ug/L 0.50 0.13 EPA-8260 - NA -J <br /> Toluene 0.19 ug/L 0.50 0.093 EPA-8260 NO J 1 <br /> 1,2,4-Trichlorobenzene NO ug/L 0.50 0.17 EPA-8260 NO 1 <br /> --- --- --._ .--- ..._._... <br /> 1,1,1-Trichloroethane NO ug/L 0.50 0.081 EPA-8260 NO <br /> 1,1,2-Trichloroethane NO ug/L 0.50 0.21 EPA-8260 NO 1 <br /> Trichloroethene 0.22 uglL 0.50 0.13 EPA-8260 -_--„ND-H- °I -- 1 <br /> Trichiorofluoromethane ---- -.._._._. NO <br /> ugiL 0.50 0.11 EPA-8260 NO <br /> 1,2,3 Trichlorapeopane NO ug/L 1.0 0.30 EPA-8260 NO 1 <br /> Vinyl chloride NO ug/L 0.50 0.14 EPA-8260 NO 1 <br /> Total Xylenes 0.33 ug/L 1.0 0.26 EPA-8260--- Na J 1 -_ <br /> Acetone NO ug/L 10 4.6 EPA-8260 _NO <br /> AcetonitIlle _ NO ug/L-- 10 -- 6.3---EPA-8260 NO --- 1 <br /> Acrolein NO ug/L 20 8.9 EPA-8260 NO 1 <br /> Acrylonitrile NO ug/L - 5.0 ----`1.2 EPA-8260 ND _..__�_....... <br /> Allyl chloride - -__---- NO ug/L 5.0 - 0.80 EPA-8260 NO----------- <br /> t-Amyl <br /> --- --•--t-Amyl Methyl ether NO ug/L 0.50 0.25 EPA-8260 NO 1 <br /> t-Butyl alcohol NO ug/L 10 9.4--EPA-8260 NO -_-_-- ---1----- <br /> - _.. -----..........._,._ <br /> Carbon diisulftde NO ug/L 1.0 0.35 EPA-8260 NO 1 <br /> Chloroprene NO ug/L 5`0 --0.37 EPA-8260 �- NO --- <br /> trans-1,4-Dichloro-2-butene NO ug/L 5.0 1.4 EPA-8260 NO 1 <br /> Diisopropyl ether NO ug/L 0.50 - 0.19 EPA-8260 NO <br /> Ethanol - --- - NO - ug/L- 250 45-_EPA-8260_ NO-- 1 - <br /> Ethyl methacrylate NO ug/L 4.0 0.97 EPA-8260 NO 1 <br /> Ethyl t-butyl ether NO ug/L 0.50 0.18 EPA-8260 NO 1 <br /> Hexachloroethane NO ug/L 0.50 0.13 EPA-8260 NO 1 <br /> 2-Hexanone NO ug/L 10 3.4 EPA-8260 NO 1 <br /> Isobutanol NO ug/L 20 5.4 EPA-8260 NO 1 <br /> Methacrylonitrile NO ug/L 10 3.1 EPA-8260 ND 1 <br /> Methyl ethyl ketone NO ug/L 10 2.5 EPA-8260 NO 1 <br /> Methyl iodide NO ug/L 2.0 0.44 EPA-8260 NO 1 <br /> The results to 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 interprewioa <br /> 4100 Atlas Court Bakersfield,CA 93308 (661)327-4911 FAX(661)327-19`18 wwwr.bclabs.com Page 11 of 36 <br />