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WKWt ii0ob.com <br />A:Es:Maa Sfac? 1tllt <br />2=0711 . Billings, MT 800-135-4468 • Casper, WY 8118-235-0515 <br />Rapid U Y, SD A18-672-1225 - CollenStation. iX.898-616-2218 <br />QA/QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation Report Date: 12/17/10 <br />Project: Schwartzwalder Water Monitoring Program-Discharge Work Order: C10110468 <br />Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Method: E903.0 Batch: RA226-5003 <br />Sample ID: C10110468-001FMS Sample Matrix Spike Run: TENNELEC-3_101115C 11/24/10 01:48 <br />Radium 226 19 pCi/L 103 70 130 <br />Sample ID: C10110468-001FMSD Sample Matrix Spike Duplicate Run: TENNELEC-3_101115C 11/24/10 01:48 <br />Radium 226 18 pCi/L 101 70 130 0.3 21 <br />Sample ID: MB-RA226-5003 3 Method Blank Run: TENNELEC-3_101115C 11/24/10 03:38 <br />Radium 226 0.1 pCi/L U <br />Radium 226 precision (±) 0.08 pCi/L <br />Radium 226 MDC 0.10 pCi/L <br />Sample ID: LCS-RA226-5003 Laboratory Control Sample Run: TENNELEC-3_101115C 11/24/10 03:38 <br />Radium 226 8.4 pCi/L 105 70 130 <br />Method: E903.0 <br />Sample ID: C10110468-001EMS <br />Radium 226 <br />Sample ID: C10110468-001 EMSD <br />Radium 226 <br />Sample ID: MB-RA226-5022 <br />Radium 226 <br />Radium 226 precision (±) <br />Radium 226 MDC <br />Sample ID: LCS-RA226-5022 <br />Radium 226 <br />Sample Matrix Spike <br />18 pCi/L <br />Sample Matrix Spike Duplicate <br />18 pCi/L <br />3 Method Blank <br />0.1 pCi/L <br />0.10 pCi/L <br />0.1 pCi/L <br />Laboratory Control Sample <br />7.8 pCi/L <br />Batch: RA226-5022 <br />Run: TENNELEC-3_101119H 12/06/10 12:01 <br />99 70 130 <br />Run: TENNELEC-3_101119H 12/06/10 12:01 <br />97 70 130 1.3 21.8 <br />Run: TENNELEC-3_101119H 12/06/10 12:01 <br />U <br />Run: TENNELEC-3_101119H 12/06/10 12:01 <br />98 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 17 of 23 <br />