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warty <br />ene lilylabam <br />Helena, NT 577-47Z-0771 • Billings, MI HUB-103-4450 • Gasper, WT e00-147-Y010 <br />Ae>ylfcafEsiaB=RM IM Gillette, WY 866-686-7175 • Rapid City, SD 886-672-1225 • College Station, TX 888-690-2218 <br /> QA/QC Summary Report <br /> Prepared by Casper, WY Branch <br />Client: Cotter Corporation Report Date: 03/04/11 <br />Project: Schwartz SW02-03-11 S25602-S25608 Work Order: C11020189 <br />Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Method: E903.0 Batch: RA226-5178 <br />Sample ID: C11020127-001AMS Sample Matrix Spike Run: BERTHOLD 770-1_110211A 02/28/11 09:55 <br />Radium 226 15 pCi/L 104 80 120 <br />Sample ID: C1 1020127-001 AMSD Sample Matrix Spike Duplicate Run: BERTHOLD 770-1_110211A 02/28/11 09:55 <br />Radium 226 16 pCi/L 116 80 120 9.5 27.8 <br />Sample ID: MB-RA226-5178 3 Method Blank Run: BERTHOLD 770-1_110211A 02/28/11 12:11 <br />Radium 226 -0.084 pCi/L U <br />Radium 226 precision (±) 0.070 pCi/L <br />Radium 226 MDC 0.18 pCi/L <br />Sample ID: LCS-RA226-5178 Laboratory Control Sample Run: BERTHOLD 770-1_110211A 02/28/11 12:11 <br />Radium 226 7.0 pCi/L 112 90 110 S <br />- LCS response is outside of the acceptance range for this analysis. Since the MB, MS, and MSD are acceptable the batch is approved. <br />Method: E903.0 Batch: RA226-5168 <br />Sample ID: C11020006-001 EMS Sample Matrix Spike Run: BERTHOLD 770-2_110208A 02/14/11 21:47 <br />Radium 226 13.6 pCi/L 105 70 130 <br />Sample ID: C1 1020006-001 EMSD Sample Matrix Spike Duplicate Run: BERTHOLD 770-2_110208A 02/14/11 21:47 <br />Radium 226 13.7 pCi/L 105 70 130 0.1 29.5 <br />Sample ID: MB-RA226-5168 3 Method Blank Run: BERTHOLD 770-2_110208A 02/15/11 01:06 <br />Radium 226 -0.12 pCi/L U <br />Radium 226 precision (±) 0.091 pCi/L <br />Radium 226 MDC 0.23 pCi/L <br />Sample ID: LCS-RA226-5168 Laboratory Control Sample Run: BERTHOLD 770-2_110208A 02/15/11 01:06 <br />Radium 226 6.0 pCi/L 97 70 130 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />U - Not detected at minimum detectable concentration <br />ND - Not detected at the reporting limit. <br />S - Spike recovery outside of advisory limits. <br />Page 26 of 37