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�Envirotnm�ent�al �L�!b!ra�t�orySlince <br /> �1949 <br /> t <br /> Herst Associates Reported: 07/21/2010 16:44 <br /> 4630 South Highway 94 North Outer Road Project: NCYC <br /> Saint Charles,MO 63304 Project Number: [none] <br /> Project Manager: Erin Fanning <br /> Volatile Organic Analysis (EPA Method 8260) <br /> BCL Sample ID: 1009909-01 Client Sample Name: Well#4/CYA#4,7/15/2010 8:10:OOAM,Erin Fanning <br /> MB Lab <br /> Constituent Result Units PQL MDL Method Bias Qualls Run# <br /> Tetrachloroethene 1.6 ug/L 0.60 0.13 EPA-8260 ND 1 <br /> Toluene ND ug/L 0.50 0.093 EPA-8260 ND - 1 <br /> 1,2,4-Trichlorobenzene ND ug/L 0.50 0.19 EPA-8260 ND <br /> 1,1,1-Trichloroethane ND ug/L 0.50 0.11 EPA-8260 ND <br /> 1 1,1,2-Trichloroethane ND ug/L 0.50 0.16 EPA-8260 ND _ 1 <br /> Trichloroethene 0.38 ug/L 0.50 0.085 EPA-8260 ND J <br /> Trichlorofluoromethane ND ug/L 0.50 0.13 EPA-8260 ND <br /> 1,2,3-Trichloropropane ND ug/L 1.0 0.24 EPA-8260 ND <br /> Vinyl chloride ND ug/L 0.50 0.12 EPA-8260 ND <br /> Total Xylenes ND ug/L_ 1.0 0.36 EPA-8260 ND <br /> Acetone ND ug/L 10 4.6 EPA-8260 ND <br /> Acrylonitrile ND ug/L 5.0 1.2 EPA-8260 ND 1 <br /> t-Amyl Methyl ether ND ug/L 0.50 0.25 EPA-8260 ND 1 <br /> t-Butyl alcohol ND ug/L 10 9.4 EPA-8260 ND 1 <br /> Carbon disulfide ND ug/L 1.0 0.38 EPA-8260 ND <br /> trans-l,4-Dichloro-2-butene ND ug/L 5.0 1.4 EPA-8260 ND <br /> Diisopropyl ether ND ug/L 0.50 0.23 EPA-8260 ND 1 <br /> Ethanol ND ug/L 250 50 EPA-8260 ND 1 <br /> Ethyl t-butyl ether ND ug/L 0.50 0.18 EPA-8260 ND 1 <br /> 2-Hexanone ND ug/L 10 3.4 EPA-8260 ND 1 <br /> ' Methyl ethyl ketone ND ug/L 10 2.5 EPA-8260 ND <br /> Methyl iodide ND ug/L 2.0 0.47 EPA-8260 ND <br /> Methyl isobutyl ketone ND ug/L 10 2.1 EPA-8260 ND - <br /> Vinyl acetate ND ug/L 10 1.8 EPA-8260 ND <br /> 1,2-Dichloroethane-d4(Surrogate) 100 % 76-114 (LCL-UCL) EPA-8260 <br /> Toluene-d8(Surrogate) 100 % 88-110 (LCL-UCL) EPA-8260 <br /> 4-Bromofluorobenzene(Surrogate) 98.1 % 86-115 (LCL-UCL) EPA-8260 <br /> Run QC <br /> Run# Method Prep Date Date/Time Analyst Instrument Dilution Batch ID <br /> 1 EPA-8260 07/20/10 07/20/10 16:49 JSK HPCHEM 1 BTG1160 <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 alteration,separation,detachment or third party interpretation <br /> 4100 Atlas Court Bakersfield,CA 93308 (661)327-4911 FAX(661)327-1918 www.bclabs.com Page 8 of 29 <br />