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-� Laboratories Inc. <br /> Environmental Testing Laboratory Since 1949 <br /> Herst Associates Project: NCYC Reported: 02//12/2009 13:44 <br /> 4630 South Highway 94 North Outer Road Project Number: [none) <br /> Saint Charles, MO 63304 Project Manager: David Vasbinder <br /> Volatile Organic Analysis (EPA Method0 0) <br /> Quality Control Report - Laboratory Control Sample <br /> Control Limits <br /> Spike Percent Percent <br /> Constituent Batch ID QC Sample ID QG Type Result Level PQL Units Recovery RPD Recovery RPD Lab Quals <br /> Benzene BSB0772 BSB0772-13SI LOS 24.170 25.000 0.50 uglL 96.7— 70-130 — <br /> Bromodichloromethane BSB0772 BSB0772-BS1 LOS 25.490 25.000 0.50 ug/L 102 70-130 <br /> Chlorobenzene BSB0772 BSB0772-BS1 LOS 25-390 25.000 0.50 uglL – 102 70-130 <br /> Chloroethane BS80772 BSB0772-BSI LOS 26.590 25.000 0.50 ug/L 106 70-130 <br /> 1,4-Dichlombenzene BSB0772 BSB0772-BS1 LOS 25.820 25.000 0.50 ug/L 103 70-130 <br /> 1,1-Dichloroethane BS30772 BSB0772-BS1 LOS 24.370 25,000 0.50 ug/L 97.5 70-130 <br /> 1,1-Dichioroethene BSBO772 BSB0772-BSI LOS 26.040 25.000 0.50 ug/L 104 70-130 <br /> Toluene BSB0772 BSB0772-BSI LOS 25.080 25.000 0.50 uglL 100 70-130 <br /> Trichloroethene BSB0772 BSB0772-BSI LOS 25.880 25.000 0.50 ug/L 104 70-130 <br /> 1,2-Dichlaroethane•d4(Surrogate) BSB0772 BSB0772-BSI LOS 9.9500 10.000 ug/L 99.5 76-114 <br /> Toluene-d8(Surrogate) BS60772 BSB0772-BS1 LOS 9.9700 10.000 ug/L 99.7 88-110 <br /> _....--------------_-- — <br /> 4-Bromofluorobenzene(Surrogate) BSB0772 BSB0772-BS1 LOS 10.120 10.000 ug/L 101 86-115 <br /> The results in this report apply to the swnples analyzed in accardance 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,hy—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.bciabs.com Page 32 of 36 <br /> Certifications: California-ELAP Certification Number 1186; Nevada Administrative Code-NAC-445A <br />