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TMEM Laboratories, Inc. I <br /> Environmental Testing Laboratory Since 1949 <br /> Herst Associates Project: NCYC Reported: 06/29/2009 15:28 <br /> 4630 South Highway 94 North Outer Road Project Number: Monthly <br /> Saint Charles, MO 63304 Project Manager. Erin Fanning <br /> Volatile Organic Analysis (EPA Method 8260) <br /> Quality Control Report - Laboratory Control Sample <br /> Control Limits <br /> Spike Percent Percent <br /> Constituent Batch ID QC Sample ID QCT Result Level POL Units Recovery RPD Recoveg RPD Lab Quals <br /> Benzene BSF1839 BSF1839-BSI LCS 26.550 25.000 0.50 ug/L 106 70-130 <br /> Bromodichloromethane BSF1839 BSF1839-BSI LCS 24,430 25.000 0.50 ug/L 97.7 70-130 <br /> Chlorobenzene BSF1839 BSF1839-BS1 LCS 24.250 25.000 0.50 ug/L 97.0 70-130 <br /> Chloroethane, ESF1839 BSF1839-BS1 LCS 31.350 25,000 0.50 ug/L 125 70-130 <br /> 1,4-Dichlorobenzene SSF1839 BSF1839-BSI LCS 25.010 25.000 0,50 ug/L 100 70-130 <br /> 11-Dichloroethane BSF1839 BSF1839-BS1 Les 22.00 25.000 0.50 ug/L 88.0 70-130 <br /> 1,1;-Dichloroetherve BSF1839 BSF1839-BSI Les 25.880 25.000 0.50 ug/L 104 70-130 <br /> Toluene BSF1839 BSF1839-BSI I-Cs 24.730 25.000 _0.50 <br /> Trichloroethene BSF1839 BSF1839-BS1 LCS 25.220.---25.000 0.50 ug/L 101 70-130 <br /> 1,2-Dichloroethane-d4(Surrogate) BSF1839 BSF1839-BSI LCS 10,480 10,000 ug/L 105 76-114 <br /> Toluene-d8(Surrogate) BSF1839 BSF1839-BS1 LCS 9.9800 10.000 ug/L 99.8 88-110 <br /> 4-Bromofluorobenzene(Surrogate) BSF1839 BSF1839-BS1 LCS 9.4700 10.000 ug/L 94.7 86-115 <br /> —---—------- <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 dw exclusive use of the submitting nam. BC Laboratories,Inc.assumes no moonsibilitv for report alteration,separation,detachment or third party interpretation. Page 32 of 36 <br /> 4100 Atlas Court Bakersfield,CA 93308 (661)327-4911 FAX(661)327-1918 www.bclabs.com <br /> Certifications; California-ELAP Certification Number 1186; Nevada Administrative Code-NAG-445A <br />