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wwiN.tdagylab.com <br />Air?tlaf%Eardaecr.3lOCe dfl . <br />Client: Cotter Corporation <br />Project: Schwartz SW 01 -11 -11 S25440-S25447 <br />Analyte Count Result <br />Method: E903.0 <br />Sample ID: C11010482-001GMS Sample Matrix <br />Radium 226 15.7 <br />111 • Billings, MT 000-735-4499 • Casper, WY SM235-0516 <br />pid c3y, so 919-672-1225 • College Station, TX IM610.2215 <br />QA/QC Summary Report <br />Prepared by Casper, WY Branch <br />Report Date: 02/11 /11 <br />Work Order: C11010459 <br />Units RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Batch: RA226-5137 <br />Spike Run: BERTHOLD 770-1_110124B 02/07/11 15:15 <br />pCi/L 119 70 130 <br />Sample ID: C11010482-001GMSD Sample Matrix Spike Duplicate Run: BERTHOLD 770-1_110124B 02/07/11 15:15 <br />Radium 226 12.1 pCi/L 90 70 130 26 25 R <br />- The RPD for the MSD is high. The individual spike recoveries are within range, the MB is acceptable, and the LCS is within range, therefore the batch is approved. <br />Sample ID: MB-RA226-5137 3 Method Blank Run: BERTHOLD 770-1_110124B 02/07/11 16:46 <br />Radium 226 -0.08 pCi/L U <br />Radium 226 precision (±) 0.06 pCi/L <br />Radium 226 MDC 0.2 pCi/L <br />Sample ID: LCS-RA226-5137 Laboratory Control Sample Run: BERTHOLD 770-1_110124B 02/07/11 16:46 <br />Radium 226 7.0 pCi/L 112 70 130 <br />Method: E903.0 <br />Sample ID: C11010459-008EMS <br />Radium 226 <br />Sample ID: C11010459-008EMSD <br />Radium 226 <br />Sample ID: MB-RA226-5128 <br />Radium 226 <br />Radium 226 precision (±) <br />Radium 226 MDC <br />Sample ID: LCS-RA226-5128 <br />Radium 226 <br />Sample Matrix Spike <br />13 pCi/L <br />Sample Matrix Spike Duplicate <br />13 pCi/L <br />3 Method Blank <br />-0.04 pCi/L <br />0.09 pCi/L <br />0.2 pCi/L <br />Laboratory Control Sample <br />6.5 pCi/L <br />Run: G542M_110118A <br />99 70 130 <br />Run: G542M_110118A <br />98 70 130 <br />Run: G542M_110118A <br />Run: G542M_110118A <br />103 70 130 <br />Batch: RA226-5128 <br />01/25/11 10:45 <br />01/25/11 10:45 <br />0.7 24.7 <br />01/25/11 02:05 <br />U <br />01/25/11 02:05 <br />Qualifiers: <br />RL - Analyte reporting limit. ND - Not detected at the reporting limit. <br />MDC - Minimum detectable concentration R - RPD exceeds advisory limit. <br />U - Not detected at minimum detectable concentration <br />Page 26 of 38 <br />