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ENERGY <br />LABORATORIES <br />0 <br />Client: Cotter Corporation <br />Project: Schwartz GW 7/20/12 S26541 Work Order: C12070761 <br />Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Method: E903.0 <br />Sample ID: 012070777- 002BMS <br />Radium 226 <br />www.energylab.com + Helena, MT 877 472 - 0711 • Billings, MT 800 - 735 - 4489 • Casper, WY 888 235 - 0515 <br />AeelrtleelfrCDNeeceSim 1152 Gillette, WY 866 - 686 - 1175 • Rapid City, SD 888 - 672 - 1225 • College Station, TX 888 690 - 2218 <br />Sample Matrix Spike <br />15 pCi /L <br />Sample ID: C12070777- 002BMSD Sample Matrix Spike Duplicate Run: TENNELEC- 3_120730D 08/06/12 15:11 <br />Radium 226 16 pCi /L 125 70 130 9.5 24.1 <br />Sample ID: MB -RA226 -6136 <br />Radium 226 <br />Radium 226 precision ( ±) <br />Radium 226 MDC <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />3 Method Blank <br />0.2 pCi /L <br />0.1 pCi /L <br />0.1 pCi /L <br />Sample ID: LCS -RA226 -6136 Laboratory Control Sample <br />QA/QC Summary Report <br />Prepared by Casper, WY Branch <br />Run: TENNELEC-3_120730D <br />115 70 130 <br />Radium 226 6.8 pCi /L 105 80 120 <br />Run: TENNELEC -3 1207300 08/06/12 16:45 <br />Run: TENNELEC -3 1207300 08/06/12 16:45 <br />ND - Not detected at the reporting limit. <br />Report Date: 08/17/12 <br />Batch: RA226 -6136 <br />08/06/12 15:11 <br />Page 14 of 18 <br />