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v www.energylab.com Helena, MT 877-472-0711 • Billings, MT 800-735-4489 • Casper, WY 888-235-0515 <br />J ry karyttcal fxce6aacosfnce 1932 Gillette, WY 866-686-7175 • Rapid City, SO 886-672-1125 • College Station, TX 888-690-2218 <br />QA/QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation Report Date: 01/20/11 <br />D-i.?t• Srhwart7walder Water Monitoring Proqram- Discharge Work order: C10120853 <br />ialyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Dual <br />Ratrh• RA998-3! <br />Method: RA-05 <br />Sample ID: LCS-228-RA226-5099 Laboratory Control Sample <br />Radium 228 6.3 pCi/L <br />Sample ID: MB-RA226-5099 3 Method Blank <br />Radium 228 0.5 pCi/L <br />Radium 228 precision (±? 0.5 pCi/L <br />Radium 228 MDC 0.9 pCi/L <br />Sample ID: 010120889-001 DMS Sample Matrix Spike <br />Radium 228 12 pCi/L <br />Sample ID: C10120889-001 DMSD Sample Matrix Spike Duplicate <br />Radium 228 12 pCi/L <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />Run: TENNELEC-3_110104B 01/11/11 11:34 <br />82 70 130 <br />Run: TENNELEC-3_110104B 01/11/11 11:34 <br />U <br />Run: TENNELEC-3_110104B 01/11/11 11:34 <br />80 70 130 <br />Run: TENNELEC-3_110104B 01/11/11 11:34 <br />83 70 130 1.9 35.1 <br />ND - Not detected at the reporting limit. <br />U - Not detected at minimum detectable concentration <br />Page 6 of 9