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6-Laboratories, Inc. <br /> I <br /> Environmental Testing Laboratory Since 1949 <br /> Herst Associates Project: NCYC Reported: 12/02/2009 12:27 <br /> 4630 South Highway 94 North Outer Road Project Number: [none] <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 Recoveg RPD Recoveg RPD Lab Quals; <br /> Benzene BSK1614 BSK1614-BS1 LCS 25.372 25.000 0.50 ug/L 101 70-130 <br /> Bromodichloromethane BSK1614 BSK1614-BS1 LCS 24.252 25.000 0.50 ug/L 97.0 70-130 <br /> Chlorobenzene BSK1614 BSK1614-BS1 LCS 24.293 25.000 0.50 ug/L 97.2 70-130 <br /> Chloroethane BSK1614 BSK1614-BSI LCS 24.391 25.000 0.50 ug/L 97.6 70-130 <br /> 1,4-Dichlorobenzene BSK1614 BSK1614-BSI Les 24.101 25.000 0.50 ug/L 96.4 70-130 <br /> 1,1-Dichloroethane BSK1614 BSK1614-BSI LCS 25,270 25.000 0.50 ug/L 101 70-130 <br /> 1,1-Dichforoethene BSK1614 BSK1614-BS1 LCS 25.464 25.000 OM ug/L 102 70-130 <br /> Toluene BSK1614 BSK1614-BSI LCS 25.234 25.000 0.50 ugtL 101 70-130 <br /> Trichloroethene BSK1614 BSK1614-BSI LCS 25,686 25.000 0.50 ug/L 103 70-130 <br /> 1,2-Dichloroethane-d4(Surrogate) BSK1614 BSK1614-BSI LCS 9.8177 10.000 ug/L 98.2 76-114 <br /> TolueneA8(Surrogate) BSK1614 BSK1614-BSI LCS 9.9539 10.000 ug/L 99.5 88-110 <br /> ...................—--------- <br /> 4-Bromofluorobenzene(Surrogate) BSK1614 BSK1614-BS1 LCS 9.6286 10.000 ug/L 96.3 86-115 <br /> The results in this report apply to the samples analyzed in accordance with the chain of custody document.Ais analytical report must he reproduced in its entirety. <br /> All results listed in this report are for the exclusive use of the subtrittin.g party. 13C Laboratories,Luc.assumes no responsibility for report alteration,separation,detw3innent or third party interpref2tion. <br /> 4100 Atlas Court Bakersfield,CA 93308 (661)327-4911 FAX(661)327-1918 www.bclabs.com Page 32 of 36 <br /> Certifications: California-ELAP Certification Number 1186; Nevada Administrative Code-NAC-445A <br />