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ENERGY <br />L ARO RATORI ES <br />Client: Cotter Corporation <br />Project: Schwartz Monitoring Program 7/5/2012 S26552 Work Order: C12070208 <br />Analyte Count Result Units <br />Method: RA -05 <br />Sample ID: LCS- 228 -RA226 -6104 <br />Radium 228 <br />Sample ID: MB -RA226 -6104 <br />Radium 228 <br />Radium 228 precision ( ±) <br />Radium 228 MDC <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />- www energylab.com Helena, MT 871 472 - 0711 • Billings, MT 800 735 - 4489 • Casper, wY 888 - 235 - 0515 <br />Analytical Excellence Since 1952 ) Gillette, WY 866 - 686 - 7175 • Rapid City, SD 888 672 - 1225 • College Station, TX 888 - 690 - 2218 <br />Laboratory Control Sample <br />5.8 pCi /L <br />3 Method Blank <br />0.03 pCi /L <br />0.8 pCi /L <br />1 pCi /L <br />Sample ID: 012070295- 002DMS Sample Matrix Spike <br />QA/QC Summary Report <br />Prepared by Casper, WY Branch <br />RL %REC Low Limit High Limit RPD RPDLimit Qua! <br />Run: TENNELEC -3 120713A <br />118 80 120 <br />Run: TENNELEC -3 120713A <br />Radium 228 11 pCi /L 97 70 130 <br />Report Date: 08/13/12 <br />Batch: RA228 -4163 <br />07/19/12 20:56 <br />07/19/12 20:56 <br />U <br />Run: TENNELEC-3_120713A 07/19/12 20:56 <br />Sample ID: C12070295- 002DMSD Sample Matrix Spike Duplicate Run TENNELEC- 3_120713A 07/19/12 20:56 <br />Radium 228 10 pCi /L 86 70 130 10 46.6 <br />ND - Not detected at the reporting limit. <br />U - Not detected at minimum detectable concentration <br />Page 18 of 21 <br />