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ENERGY <br />Client: Cotter Corporation <br />Analyte <br />www.enegylab.com Helena, MT 877-472-0711 • Billings, MT 800 - 735 -4489 • Casper, WY 888 -235 -0515 <br />c 1852 Gillette, WY 886 -886 -7175 • Rapid City, SO 888 -672 -1225 • College Station, TX 888 - 690 -2218 <br />QA/QC Summary Report <br />Prepared by Casper, WY Branch <br />Report Date: 06/13/12 <br />Project: Schwartz - SW 5/10/11 S26366- S26368 Work Order: C12050482 <br />Count Result Units RL %REC Low Limit High Limit RPD RPDLimIt Qual <br />Method: E903.0 Batch: RA226 -5995 <br />Sample ID: LCS -RA226 -5995 Laboratory Control Sample Run: BERTHOLD 770- 1_120515D 05/22/12 17:54 <br />Radium 226 6.4 pCi /L 100 80 120 <br />Sample ID: C12050482 -001 BMS Sample Matrix Spike Run: BERTHOLD 770- 1_120515D 05/22/12 21:23 <br />Radium 226 23 pCi /L 177 70 130 S <br />- Spike response is outside of the acceptance range for this analysis. Since the LCS and the MSD are acceptable the batch is approved. <br />Sample ID: C12050482 -001 BMSD Sample Matrix Spike Duplicate Run: BERTHOLD 770- 1_120515D 05/22/12 21:23 <br />Radium 226 12 pCi /L 89 70 130 64 22.8 R <br />Sample ID: MB -RA226 -5995 3 Method Blank Run: BERTHOLD 770- 1_120515D 05/22/12 22:56 <br />Radium 226 0.2 pCi /L <br />Radium 226 precision ( ±) 0.1 pCi /L <br />Radium 226 MDC 0.2 pCi /L <br />Method: E903.0 <br />Sample ID: LCS -RA226 -5997 <br />Radium 226 <br />Laboratory Control Sample <br />6.9 pCi /L <br />Sample ID: C12050461 -001AMS Sample Matrix Spike <br />Radium 226 14 pCi /L <br />Run: BERTHOLD 770- 2_120516A <br />111 80 120 <br />Batch: RA226 -5997 <br />06/11/12 14:54 <br />Run: BERTHOLD 770- 2_120516A 06/11/12 14:54 <br />110 70 130 <br />Sample ID: C12050461- 001AMSD Sample Matrix Spike Duplicate Run: BERTHOLD 770- 2_120516A 06/11/12 14:54 <br />Radium 226 14 pCi /L 106 70 130 2.8 25.4 <br />Sample ID: MB- RA226 -5997 <br />Radium 226 <br />Radium 226 precision ( ±) <br />Radium 226 MDC <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />S - Spike recovery outside of advisory limits. <br />3 Method Blank <br />-0.09 pCi /L <br />0.07 pCi /L <br />0.2 pCi /L <br />Run: BERTHOLD 770- 2_120516A <br />ND - Not detected at the reporting limit. <br />R - RPD exceeds advisory limit. <br />U - Not detected at minimum detectable concentration <br />Page 24 of 30 <br />06/11/12 18:17 <br />U <br />