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• E www.ewgylab.com � Helena, MT 877-472 -0711 • Billings, MT 800 - 735-4189 • Casper, WY 888- 235 -0513 <br />r�' <br />"AW 1V2 Gillette, WY 866 -686 -7175 • Rapid City, SD 886- 672 -1225 • College Station, TX 888- 690 -2218 <br />QA /QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation <br />Report Date: <br />09/24/14 <br />Project: Schwartz -SW 9/3/14 S27624 <br />Work Order: <br />C14090144 <br />Analyte Count Result Units <br />RL %REC Low Limit High Limit RPD <br />RPDLimit Qual <br />Method: RA -05 <br />Batch: RA228 -4758 <br />Lab ID: LCS- 228 -RA226 -7352 <br />Laboratory Control Sample <br />Run: TENNELEC- 3_140908A <br />09/17/14 13:39 <br />Radium 228 <br />8.7 pCi /L <br />126 80 120 <br />S <br />- LCS response is outside of the acceptance <br />range for this analysis. Since the MB, MS, and MSD are acceptable the batch is approved. <br />Lab ID: MB -RA226 -7352 <br />3 Method Blank <br />Run: TENNELEC -3 140908A <br />09/17/14 13:39 <br />Radium 228 <br />0.3 pCi /L <br />U <br />Radium 228 precision ( ±) <br />1 pCi /L <br />Radium 228 MDC <br />2 pCi /L <br />Lab ID: C14090030- 002DMS <br />Sample Matrix Spike <br />Run: TENNELEC- 3_140908A <br />09/17/14 13:39 <br />Radium 228 <br />16.2 pCi /L <br />115 70 130 <br />Lab ID: 014090030- 002DMSD <br />Sample Matrix Spike Duplicate <br />Run: TENNELEC- 3_140908A <br />09/17/14 13:39 <br />Radium 228 <br />17.2 pCi /L <br />123 70 130 5.9 <br />39.6 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />U - Not detected at minimum detectable concentration <br />ND - Not detected at the reporting limit. <br />S - Spike recovery outside of advisory limits. <br />Page 21 of 24 <br />