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ENERGY <br />LAHORA FOR'LS <br />Analyte <br />Client: Cotter Corporation <br />Project: Schwartz SW 2/19/13 S26797 <br />Method: RA-05 <br />Sample ID: LCS- 228 -RA226 -6524 <br />Radium 228 <br />Sample ID: MB - RA226 - 6524 <br />Radium 228 <br />Radium 228 precision ( ±) <br />Radium 228 MDC <br />www.energylab.com I Helena, MT 677 472 - 0711 • Billings, MT 800 735 - 4489 • Casper, WY 888- 235 -0515 <br />MsyticalExcellence Since 1952 ) Gillette, WY 866 -686 -7175 • Rapid City, SD 888 -672 -1225 • College Station, TX 888 -690 -2218 <br />Count Result Units <br />Laboratory Control Sample <br />5.7 pCi /L <br />3 Method Blank <br />0.4 <br />0.8 <br />1 <br />pCi /L <br />pCi /L <br />pCi /L <br />Sample ID: C13020647- 001AMS Sample Matrix Spike <br />Radium 228 <br />Radium 228 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />QA/QC Summary Report <br />Prepared by Casper, WY Branch <br />10 pCi /L <br />Sample ID: C13020647- 001AMSD Sample Matrix Spike Duplicate <br />10 pCi /L <br />RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Run: TENNELEC- 3_130222C <br />119 80 120 <br />Run: TENNELEC- 3_130222C <br />Run: TENNELEC- 3_130222C <br />93 70 130 <br />Report Date: 03/21/13 <br />Work Order: C13020606 <br />ND - Not detected at the reporting limit. <br />U - Not detected at minimum detectable concentration <br />Batch: RA228 -4350 <br />03/07/13 21:26 <br />03/07/13 21:26 <br />U <br />03/07/13 21:26 <br />Run: TENNELEC- 3_130222C 03/07/13 21:26 <br />89 70 130 2.4 49.5 <br />Page 22 of 26 <br />