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www.energylab.CDM Helena, MT 811- 472 -0711 - Billings, MT 800 - 735 -4409 - Casper, WY 888- 235 -0515 <br />IM Gillette, W 866 -086 -7175 • Rapid City, SO 888- 672 -1225 - College Station, T% 888- 690 -2218 <br />QA/QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation <br />Report Date: <br />09/30/13 <br />Project: Schwartz SW 09/05/13 <br />S27131 <br />Work Order: <br />C13090222 <br />FAnalyte <br />Count Result Units <br />RL ° /oREC <br />Low Limit High Limit RPD <br />RPDLimit Qual <br />Method: RA -05 <br />Batch: RA228 -4506 <br />Sample ID: LCS- 228 -RA226 -6838 <br />Laboratory Control Sample <br />Run: TENNELEC- 3_130913B <br />09/18/13 09:48 <br />Radium 228 <br />8.9 pCi /L <br />118 <br />80 120 <br />Sample ID: MB -RA226 -6838 <br />3 Method Blank <br />Run: TENNELEC- 3_130913B <br />09/18/13 09:48 <br />Radium 228 <br />-0.04 pCi /L <br />U <br />Radium 228 precision ( ±) <br />0.7 pCi /L <br />Radium 228 MDC <br />1 pCi /L <br />Sample ID: 013090222- 001FMS <br />Sample Matrix Spike <br />Run: TENNELEC- 3_130913B <br />09/18/13 09:48 <br />Radium 228 <br />17 pCi /L <br />107 <br />70 130 <br />Sample ID: C13090222- 001FMSD <br />Sample Matrix Spike Duplicate <br />Run: TENNELEC- 3_130913B <br />09/18/13 09:48 <br />Radium 228 <br />15 pCi /L <br />93 <br />70 130 14 <br />36 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />ND - Not detected at the reporting limit. <br />U - Not detected at minimum detectable concentration <br />Page 24 of 27 <br />