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� I <br />Laboratories Inc. <br />Environmental Testing Laboratory Since 1949 <br />Hers, 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: 1009909-09 Client Sample Name: Trip Blank, 7/15/2010 12:0O:OOAM <br />I MB Lab <br />Constituent Result Units PQL MDL Method Bias Quals Run # <br />Tetrachloroethene <br />ND <br />ug/L <br />0.50 <br />0.13 <br />EPA -8260 <br />ND <br />Toluene <br />ND <br />ug/L <br />0.50 <br />0.093 <br />EPA -8260 <br />ND <br />1,2,4-Trichlorobenzene <br />ND <br />ug/L <br />0.50 <br />0.19 <br />EPA -8260 <br />ND <br />1 <br />1,1,1 -Trichloroethane <br />ND <br />ug/L <br />0.50 <br />0.11 <br />EPA -8260 <br />ND <br />1 <br />1,1,2 -Trichloroethane <br />ND <br />ug/L <br />0.50 <br />0.16 <br />EPA -8260 <br />ND <br />1 <br />Trichloroethene <br />ND <br />ug/L <br />0.50 <br />0.085 <br />EPA -8260 <br />ND <br />Trichlorofluoromethane <br />ND <br />ug/L <br />0.50 <br />0.13 <br />EPA -8260 <br />ND <br />1,2,3-Trichloropropane <br />ND <br />ug/L <br />1.0 <br />0.24 <br />EPA -8260 <br />ND <br />Vinyl chloride <br />ND <br />ug/L <br />0.50 <br />0.12 <br />EPA -8260 <br />ND <br />1 <br />Total Xylenes <br />ND <br />ug/L <br />1.0 <br />0.36 <br />EPA -8260 <br />ND <br />Acetone <br />ND <br />ug/L <br />10 <br />4.6 <br />EPA -8260 <br />ND <br />Acrylonitrile <br />ND <br />ug/L <br />5.0 <br />1.2 <br />EPA -8260 <br />ND <br />1 <br />t -Amyl Methyl ether <br />ND <br />ug/L <br />0.50 <br />0.25 <br />EPA -8260 <br />ND <br />t -Butyl alcohol <br />ND <br />ug/L <br />10 <br />9.4 <br />EPA -8260 <br />ND <br />1 <br />Carbon disulfide <br />ND <br />ug/L <br />1.0 <br />0.38 <br />EPA -8260 <br />ND <br />trans-l,4-Dichloro-2_butene <br />ND <br />ug/L <br />5.0 <br />1.4 <br />EPA -8260 <br />ND <br />Diisopropyl ether <br />ND <br />ug/L <br />0.50 <br />0.23 <br />EPA -8260 <br />ND <br />1 <br />Ethanol <br />ND <br />ug/L <br />250 <br />50 <br />EPA -8260 <br />ND <br />1 <br />Ethyl t -butyl ether <br />ND <br />ug/L <br />0.50 <br />0.18 <br />EPA -8260 <br />ND <br />2-Hexanone <br />ND <br />ug/L <br />10 <br />3.4 <br />EPA -8260 <br />ND <br />' Methyl ethyl ketone <br />ND <br />ug/L <br />10 <br />2.5 <br />EPA -8260 <br />ND <br />1 <br />Methyl iodide <br />ND <br />ug/L <br />2.0 <br />0.47 <br />EPA -8260 <br />ND <br />Methyl isobutyl ketone <br />ND <br />ug/L <br />10 <br />2.1 <br />EPA -8260 <br />ND <br />1 <br />Vinyl acetate <br />ND <br />ug/L <br />10 <br />1.8 <br />EPA -8260 <br />ND <br />1,2-Dichloroethane-d4 (Surrogate) <br />92.1 <br />% <br />76-114 (LCL - <br />UCL) <br />EPA -8260 <br />1 <br />Toluene -d8 (Surrogate) <br />99.9 <br />% <br />88-110 (LCL - <br />UCL) <br />EPA -8260 <br />4-Bromofluorobenzene (Surrogate) <br />95.7 <br />% <br />86-115 (LCL - <br />UCL) <br />EPA -8260 <br />Run # Method <br />Prep Date <br />Run <br />DatelTime <br />Analyst <br />Instrument Dilution <br />QC <br />Batch ID <br />1 EPA -8260 <br />07/20/10 <br />07/20/10 19:33 JSK <br />HPCHEM 1 <br />BTG 1160 <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 <br />Page 24 of 29 <br />