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wwweie #a6.eom ?r r` H Jena MT 577-472-0711 • Billings, W BOO-7354489 • Casper, ld/Y 808-235-0515 <br />Au EncsAMceam fillt li >f?;6 i66=7175 •'Rapid C ?, so 008-672-1225 • college station, 7x 888410-2218 <br />QA/QC Summary Report <br />Prepared by Casper, WY Branch <br /> Report Date: 03/15/11 <br />Client: Cotter Corporation <br />Project: Schwartz SW 02-10-11 S25580-S25582 Work Order: 011020376 <br />Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual <br /> Batch: RA226-5180 <br />Method: E903.0 <br />Sample ID: C11020376-003CMS Sample Matrix Spike Run: BERTHOLD 770-1 _110214A 03/01/11 10:02 <br />Radium 226 14 pCi/L 111 80 120 <br />Sample ID: C11020376-003CMSD Sample Matrix Spike Duplicate Run: BERTHOLD 770-1 _110214A 03/01/11 10:02 <br />Radium 226 14 pCi/L 106 80 120 4.4 23.3 <br />Sample ID: MB-RA226-5180 3 Method Blank Run: BERTHOLD 770-1 _110214A 03/01/11 10:02 <br />Radium 226 -0.05 pCi/L U <br />Radium 226 precision (±) 0.05 pCi/L <br />Radium 226 MDC 0.1 pCi/L <br />Sample ID: LCS-RA226-5180 Laboratory Con trol Sample Run: BERTHOLD 770-1 _110214A 03/01/11 10:02 <br />Radium 226 6.7 pCi/L 107 90 110 <br />Method: E903.0 <br />Sample ID: C11020375-001CMS <br />Radium 226 <br />Sample ID: C1 1020375-001 CMSD <br />Radium 226 <br />Sample ID: MB-RA226-5194 <br />Radium 226 <br />Radium 226 precision (±) <br />Radium 226 MDC <br />Sample ID: LCS-RA226-5194 <br />Radium 226 <br />Sample Matrix Spike <br />12 pCi/L <br />Sample Matrix Spike Duplicate <br />12 pCi/L <br />3 Method Blank <br />-0.10 pCi/L <br />0.08 pCi/L <br />0.2 pCi/L <br />Laboratory Control Sample <br />5.4 pCi/L <br />kiatcn: HALLb-57 `J4 <br />Run: BERTHOLD 770-2_110225C 03/14/11 10:29 <br />88 70 130 <br />Run: BERTHOLD 770-2_110225C 03/14/11 10:29 <br />88 70 130 0.6 26.8 <br />Run: BERTHOLD 770-2_110225C 03/14/11 12:03 <br />U <br />Run: BERTHOLD 770-2_110225C 03/14/11 12:03 <br />87 85 115 <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 22 of 29