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Laboratories Inc. <br /> Environmental Testing Laboratory Since 1949 <br /> Herst Associates Project: NCYC Reported: 01/26/2009 14:30 <br /> 4630 South Highway 94 North Outer Road Project Number: NCYCC VOC Samples <br /> Saint Charles, MO 63304 Project Manager: Brian Power <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 Type Result Levet PQL Units Recovery RPD Recove RPD Lab Quals <br /> 4-Bromofluorobenzene(Surrogate) BSA1304 BSA1304-BS1 LCS 9.5600 10.000 ug/L 95.6 86-115 <br /> 7'he results in this report a ply to the samples anatyzed in accordance with the chain of custody document. 17tis analytical report must be reproduced in its entirety. <br /> AMUM d OW9 21 xclusi die su nv. raion me nsbiT�c rt alt maeqq���hment arty in on. <br /> Afla Ba d.CA—9M8 (6491 (661i1"FF-i918 clab** r PaMof 40M <br />