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vww.energylab.com Helena, MT 877-472-0711 -Billings, tdT 800-735-4489 *Casper, WY 888-235-0515 <br />AnahncarFrceuearaSlnca t932 Gillette, WY 866-686-7175 • Rapid City, SO 868-672-1225 • College Station, T% 888-690-2218 <br />QA/QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation Report Date: 01/21/11 <br />Project: Schwartzwalder Water Sampling Program-Ground Water Work Order: C10120819 <br />Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Method: E903.0 <br />Sample ID: 010120900-001HMS <br />Radium 226 <br />Sample ID: C10120900-001HMSD <br />Radium 226 <br />Sample ID: MB-RA226-5097 <br />Radium 226 <br />Radium 226 precision (±) <br />Radium 226 MOC <br />Sample ID: LCS-RA226.5097 <br />Radium 226 <br />Sample Matrix Spike <br />12.1 pCi/L <br />Sample Matrix Spike Duplicate <br />13.2 pCi/L <br />3 Method Blank <br />0.2 pCi/L <br />0.1 pCi/L <br />0.2 pCi/L <br />Laboratory Control Sample <br />5.4 pCi/L <br />Batch: RA226-5097 <br />Run: TENNELEC-3_110104A 01/12/11 11:06 <br />94 70 130 <br />Run: TENNELEC-3 110104A 01/12/11 14:57 <br />103 70 130 8.7 25.8 <br />Run: TENNELEC-3 110104A 01/12/11 14:57 <br />rt U <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum delectable concentration <br />Run: TENNELEC-3 110104A 01/12/11 14:57 <br />84 70 130 <br />ND • Not detected at the reporting limit. <br />U - Not detected at minimum detectable concentration <br />Page 20 of 25