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Laboratories Inc. � <br /> Environmental Testing Laboratory Since 1949 <br /> Herst Associates Project: NCYC Reported: 11/19/2008 15:33 <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 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 PQL Units RecoveryRPD Recove RPD Lab Quals <br /> K1062-BS1 LCS 25.438 25.000 0.54 ug/L 102 74-130 <br /> BRK1062 BR <br /> Benzene _--- <br /> Bromodichloromethane BRK1062 BRK1062-BS1 LCS 24.518 25.000 OM --uglL— 98.1 — — 70-130 _— <br /> _._—. <br /> Chlorobenzene BRK1062 BRK1062-BS1 LCS 25.351 25.000 0.50 uglL 101 70- <br /> 130 <br /> Chloroethane BRK1062 BRK1062-BSI LCS 24.929 25.000 0.50 ug/L 99.7 —_.._._—.---.--_—.—.----------- <br /> 25.839 25.000 0.50 uglL I03 70 <br /> 1,4-Dichlorobenzene BRK1062 BRK1062-BS1 -1 0 — <br /> -_.LCS----- 26.213 25.000 0.50 ug/L <br /> 105 70-130 <br /> 1,1-Dichloroethane BRK1062 BRK1062-BS1 LCS -------- ---- <br /> 1,1-Dichloroethene BRK1062 BRK1062-B51 LCS 26.552 25.400 0.50 ug/L- I06 -- - 70-130 -- <br /> Toluene BRKI062 BRK1062-BS1 LCS 24.645 25.000 0.50 ug/L 98.6 70-130 _-- <br /> -.._.. 102 70-130 <br /> Trichloroethene BRK1062 BRK1062-BS1 LCS 25.448 25A00 050 --ug/L — _�_ — ---..------— --- - <br /> 1,2-Dichloroethane-d4(Surrogate) BRK1062 BRK1062-BS1 LCS 9.7990 10.000 �—- - ug/L _ 98.0 __--76-11A _ —_------.--- <br /> Toluene-d8(Surrogate) BRK1062 BRK1062-BS1 LCS 10.080 10.000ug/L 101 88-110 -- <br /> 4-Bromofluorobenzene(Surrogate) BRK1062 BRK1062-BS1 LCS 9.9775 10.000 uglL 99.8 86-115 <br /> The results in this report apply to the samples analysed 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. RC Laboratories,Lxassumes no responsibility for report alteration,separation,detachment or third pity interpretation. Page 32 of 3fi <br /> 4100 Atlas Court Bakersfield,CA 93308 (661)327-4911 FAX(661)327-1918 www.bclabs.com <br /> ificaCaliforn®LAPCertificationNumber 118®evada Administrative de-NAG-445A <br />