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• FLZ <br />- wwwenergyiab.cora ( Helena, Mf 877472-0711 • Billings, Mi 800-7354489 • Casper, YVYGBB-235-ISIS <br />IIIM?llh= E=Om S m rN2 J Gillette, W7 866-686-7175 • Rapid City, SD 888-672-1225 • College Station, A 888-691-2218 <br />QA/QC Summary Report <br />Client: Cotter Corporation Report Date: 11 /30/10 <br />Project: Schwartzwalder Water Monitoring Program (S25416) Work Order: C10100814 <br />Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Method: RA-05 Batch: RA228-3475 <br />Sample ID: LCS-228-RA226-4974 Laboratory Control Sample Run: TENNELEC-3_101108G 11/15/10 11:03 <br />Radium 228 7.7 pCi/L 103 70 130 <br />Sample ID: MB-RA226-4974 3 Method Blank Run: TENNELEC-3_101108G 11/15/10 11:03 <br />Radium 228 0.2 pCi/L U <br />Radium 228 precision (±) 0.6 pCi/L <br />Radium 228 MDC 0.9 pCi/L <br />Sample ID: C10100875-001AMS Sample Matrix Spike Run: TENNELEC-3_101108G 11/15/10 11:03 <br />Radium 228 13 pCi/L 89 70 130 <br />Sample ID: C10100875-001AMSD Sample Matrix Spike Duplicate Run: TENNELEC-3_101108G 11/15/10 11:03 <br />Radium 228 13 pCi/L 90 70 130 1.5 40 <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