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wwwxdWabxom <br />/adpCarEYCItIYw sm 1851 <br />e472-0111 - Billings,. MT 600.735-4489 - Casper, WY 8$8-235-0515 <br />l5; Rapid City; SD 888-672-1225 • College Station, TX $88-610-2218 <br />QA/QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation <br />Project: Schwartzwalder Water Sampling Program Discharge <br />Analyte Count Result Units <br />Method: E903.0 <br />Sample ID: C10110696-001CMS Sample Matrix Spike <br />Radium 226 18 pCi/L <br />Sample ID: C10110696-001CMSD Sample Matrix Spike Duplicate <br />Radium 226 16 pCi/L <br />Sample ID: MB-RA226-5057 3 Method Blank <br />Radium 226 -0.098 pCi/L <br />Radium 226 precision (±? 0.10 pCi/L <br />Radium 226 MDC 0.22 pCi/L <br />Sample ID: LCS-RA226-5057 Laboratory Control Sample <br />Radium 226 9.4 pCi/L <br />Report Date: 12/28/10 <br />Work Order: C10110696 <br />RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Batch: RA226-5057 <br />Run: BERTHOLD 770-1_101213B 12/22/10 10:12 <br />108 70 130 <br />Run: BERTHOLD 770-1_101213B 12/22/10 10:12 <br />96 70 130 11 24.4 <br />Run: BERTHOLD 770-1_101213B 12/22/10 12:21 <br />U <br />Run: BERTHOLD 770-1_101213B 12/22/10 12:21 <br />121 70 130 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />ND - Not detected at the reporting limit. <br />U - Not detected at minimum detectable concentration <br />Page 5 of 8 <br />