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Laboratories Inc. <br /> - Environmental Testing Laboratory Since 1949 <br /> Hersf 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 Protect Number [none] <br /> _.._... _-_- ----_-_.____._._ ...... <br /> _..._. <br /> _ Project Manager Erin Fanning <br /> Volatile Organic Analysis (EPA Method8260) <br /> BCL.Sample ID: 1008252-06 Client Sample Mame: AMW-30S,6/14/2010 12:08:00PM <br /> B Lab <br /> Constituent Result Units P L MDL Method Bias gualls 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 NO ug/L 0.50 0.13 EPA-8260 NO 1 <br /> - ---- - -- - ------ <br /> -- ---- _ -_ --- <br /> Toluene 0.11 ug/L 0.50 0.093 EPA-8260 PID J <br /> -------- ---- 1 <br /> 1,2,4-Trichlorobenzene NO ug/L 0.50 0.17 EPA-8260 NO 1 <br /> 1,1,1-Trichloroethane NO ug/L 0.50 0.081 EPA-8260 NO 1 <br /> 1,1,2-Trichloroethane NO ug/L 0.50 0.21 EPA-8260 NO 1 <br /> Trichloroethene - -_ NO _ug/L _ 0.50 0.13 EPA-8260 NO 1 <br /> Trichlorofluoromethane NO ug/L 0.50 0.11 EPA-8260 NO 1 <br /> 1,2,3-Trichloropropane 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 NO ug/L 1.0 0.26 EPA-8260 NO 1 <br /> Acetone_-_--- -----.-._--_--NO ug/L - 10---- 4.6-- EPA-8260 ND________ <br /> Acetonitrile 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 uglL 5.0 1.2 EPA-8260 NO 1 <br /> Allyl chloride NO ug/L 5.0 0.80 EPA-8260 NO 1 <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 /> Carbon disulfide NO ug/L 1.0 0.35 EPA-8260 NO 1 <br /> Chloroprene NO ug/L 5.0 0.37 EPA-8260 NO 1 <br /> trans-1,4-Dichioro-2-butene ND ug/L 5.0 1.4 EPA-8260 NO 1 <br /> Diisopropyl ether NO ug/L 0.50 0.19 EPA-8260 NO 1 <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 -- --ND ug/L- 0.50 0.13 EPA-8260 NO 1 <br /> 2-Hexanone NO ug/L 10 3.4 EPA-8260 NO 1 <br /> Isobutanot NO ug/L 20 5.4 EPA-8260 NO 1 <br /> Methacrylonitdle NO ug/L 10 3.1 EPA-8260 NO 1 <br /> Methyl ethyl ketone NO uglL 10 2.5 EPA-8260 N 1 <br /> Methyl iodide NO ug/L 2.0 0.44 EPA-8260 NO 1 <br /> 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 submitting party BC Laboratories,Inc.assumes no responsibility for report alteratiorl separation,detachment or third party interpretation <br /> 4100 Atlas Court Bakersfield,CA 93308 (661)327-4911 FAX(661)327-1918 www.bciabs.com Page 23 of 36 <br />