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-- �E,fro�tnmentalt�Te�stingies Inc. <br /> Laboratory Since 1949 <br /> Project: NCYC Reported: 07/31/2009 10:49 <br /> HerSt Associates <br /> 4630 South Highway 94 North Outer}load Project Number: [none] <br /> Saint Charles,MO 63304 Project Manager: Erin)zoning <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 Sam Ie ID QC Typo Result Levet PQL Units Recovery RPD Recovery RPD Lab Quals <br /> Benzene BSG1716 BSG1716 BS1 LCS 23.070 25.000 0.50 ug/L 92.3 70-130 <br /> --_ - -- <br /> - ---- <br /> ------------.---.._ 27.090 25.000 0.50 ug/L 108 70-130 <br /> Bromodichlorornethane BSG1716 BSG1716-BSI LCS <br /> 70-130 <br /> 27.050 25.000 0.50 ug/L 108 <br /> Chlorobenzene BSG1716 BSG1716-BS1 LCS <br /> - <br /> ------- 25.460_ -- - <br /> Chloroethane BSG1716 BSG1716-BS1 LCS 25.460 25,000 0.50 ug/L <br /> 1,4-Dichlorobenzene BSG1716 BSG1716-BSI LCS 27.390 25.000 0.50 ug/L 110 70-130 <br /> —__ <br /> 1,1-13ichloroethane BSG1716 BSG1716-BS1 LCS 20.960 25.000 0.50 ug/L 83.8 70_130 <br /> 70-13 <br /> 1,1-Dichlorthene BSG1716 BSG1716-BSI LCS 25.990 25.000 0.50 ug/L 104 70-130 <br /> _ ..--------- <br /> Toluene BSG1716 BSG1716-BSI LCS 24.470 25.000 0.50 ug/L 97.9 70- <br /> -_-------_— ---.__.—...__.— <br /> Trichloroethene BSG1716 BSG1716 BS1 LCS 25.400 25.000 0.50 ug/L 70-130 <br /> _..._— <br /> ----- _ 76-114 <br /> 1,2-Dichloroethane-d4(Surrogate) BSG1716 BSG1716-BS1 LCS 10.280 10.000 ug/L 103 <br /> 110 <br /> Toluene-d8(Surrogate) BSG1716 BSG1716-BSI LCS 9.8000 10.000 ugn 0 - <br /> — -_------ 86-115 <br /> 4-Bromofluorobenzene(Surrogate) BSG1716 BSG1716-BS1 LCS 10.200 10.000 ug/L 102 <br /> The results in this report apply to the sampler 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 the exclusive use of the submittini;oarty BC Laboratories,Tnc.assaunes no responsibility for report alteration,separation.detachmeat 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-NAC-445A <br />