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Laboratories Inc. <br /> Environmental Testing Laboratory Sing 1949 <br /> Herst Associates Project: NCYC Reported: 09/16/2009 16:29 <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 QC lye Result Level PQL Units Recovery RPD Recove I RPD Lab Qualls <br /> Benzene BS10696 BS10696-BSI LCS 26.332 25,000 0.50 ug/L 105 70-130 <br /> Bromodichloromethane BS10696 BS10696-BS1 LCS 25.503 25.000 0.50 ug/L 102 70-130 <br /> Chlorobenzene BS10696 BS10696-BS1 LCS 25.901 M000 0.50 ug/L 104 - 70-130 - -- <br /> Chloroethane BS10696 BS10696-BS1 LCS 27.358 25.000 0.50 ug/L 109 70-130 <br /> 1,4-10ikctlorobenzene -BS10696 BS10696-BS1 LCS - 24.760 25.000 0.50 ug/L 99.0 �- 70-130 <br /> 1,1-Dichloroethane - BS10696 BS10696-BSI LCS 26.808 25.000 0.50 - ug/L -107 - 70-130 <br /> 1,1-Dichlomethene BS10696 BS10696-BS1 LCS 26.144 25.000 0.50 ug/L 105 70-130 <br /> Toluene <br /> - <br /> Toluene SS10696 BS10696-BS1 LCS 26.363 25.000 0.50 ug/L 105 70-130 <br /> Tri&loroethene BS10696 BS10696-BS1 LCS 28.089 25.000 0.50 ug/L 112 70-130 <br /> 1,2-Dichloroothane-d4(Surrogate) BS10696 BS10696-BS1 LCS 9.9430 10.000 ug/L 99.4 76-114 <br /> Toluene-d8(Surrogate) BS10696 BS10696-BSI LCS 10.280 10.000 ug/L 103 88-110 <br /> 4-Bromofluorobenzene(Surrogate) BSI0696 BS10696-BS1 LCS 9.9146 10.000 ugtL 99.1 86-115 <br /> Benzene BSi0801 BS10801-BSI LCS 25.562 25.000 0.50 ugtL 102 70-130 <br /> Bromodichloromethane BS10801 BSI080I-BSI LCS 22.821 25,000 0.50 -- ug/L-- 91.3 _ 70-130 - - ---- <br /> Chlorobenzene BS10801 BS10801-BS1 LCS 24.385 25.000 0.50 ugtL 97.5 70-130 <br /> Chloroethane - --~ BS10801 BS10801-BSI- LCS 25.715 25.000 0_50- ug/L 103 70-130 -- - <br /> IIA-Dkhlombenzene BS10801 BS10801-BS1 LCS 23.281 25.000 0.50 ug/L 93.1 70-130 <br /> 1,1-Dichloroethane BS10801 BS10801-BSI LCS 25.002 25.000 0.50 ug/L 100 70-130 <br /> 1,1-Dichloroethene BS10801 BS10801-BSI LCS 25.517 25.000 0.50 ug/L 102 70-130 <br /> Toluene BS10801 BS1080143SI LCS 24.305 25.000 0.50 ug/L 97.2 70-130 -- - <br /> Trichloroethene BS10801 SSf080I-BSI LCS 24.306 25.000 0.50 ug/L 97.2 70-130 <br /> 4,2-Dichloroethane-d4(Surrogate) BS10801 BS10801-BSI LCS 9.6608 10.000 ug/L 96.6 76-114 <br /> Toluene-d8(Surrogate) BS10801 BS10801-8SI LCS 9.9144 10.000 ug/L 99.1 88-110 <br /> The results in this report apply to the samples anaty--ed 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 submittinx Marty. BC Laboratories,Inc.assns no responsibility for report alteration,separation,detachment or third Darty interpretation. Page 33 of 40 <br /> 4100 Atlas Court Bakersfield,CA 93308 (661)327-4911 FAX(661)327-1918 www.bclabs.com g <br /> Certifications: California-ELAP Certification Number 1186: Nevada Administrative Code-MAC-445A <br />