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wwwtwgylab.com Helena, MT 877- 472 -0711 - Billings, MT 800- 735 -4489 - Casper, WY 888 -235 -0515 <br />Gillette, wy 866 -686 -7175 - Rapid City, SD 866 -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 />08/05/13 <br />Project: Schwartz GW 6/28/13 S27040 <br />Work Order: <br />C13070012 <br />Analyte <br />Count Result Units <br />RL ° /.REC <br />Low Limit High Limit RPD <br />RPDLimit Oual <br />Method: E900.0 <br />Batch GrAB -1576 <br />Sample ID: Th230 -GrAB -1576 <br />Laboratory Control Sample <br />Run: G542M_130709A <br />07/12/13 02:26 <br />Gross Alpha <br />121 pCi /L <br />115 <br />80 120 <br />Sample ID: Sr90 -GrAB -1576 <br />Laboratory Control Sample <br />Run: G542M_130709A <br />07/12/13 02:26 <br />Gross Beta <br />170 pCi /L <br />94 <br />80 120 <br />Sample ID: MB -GrAB -1576 <br />6 Method Blank <br />Run: G542M_130709A <br />07/12/13 02:26 <br />Gross Alpha <br />-0.2 pCi /L <br />U <br />Gross Alpha precision ( ±) <br />0.7 pCi /L <br />Gross Alpha MDC <br />1 pCi /L <br />Gross Beta <br />0.2 pCi /L <br />U <br />Gross Beta precision ( ±) <br />1 pCi /L <br />Gross Beta MDC <br />2 pCi /L <br />Sample ID: C13061074- 003EDUP <br />6 Sample Duplicate <br />Run: G542M_130709A <br />07/12/13 02:27 <br />Gross Alpha <br />18.2 pCi /L <br />54 <br />60.2 <br />Gross Alpha precision ( ±) <br />391 pCi /L <br />Gross Alpha MDC <br />5.30 pCi /L <br />Gross Beta <br />0.975 pCi /L <br />95 <br />340.1 U <br />Gross Beta precision ( ±) <br />3.30 pCi /L <br />Gross Beta MDC <br />5.47 pCi/L <br />Sample ID: C13070029 -001 DMS <br />Sample Matrix Spike <br />Run: G542M_130709A <br />07/12/13 02:27 <br />Gross Alpha <br />136 pCi /L <br />119 <br />70 130 <br />Sample ID: C13070029- 001DMSD <br />Sample Matrix Spike Duplicate <br />Run: G542M_130709A <br />07/12/13 02:27 <br />Gross Alpha <br />133 pCi /L <br />116 <br />70 130 2.4 <br />16.4 <br />Sample ID: C13070029- 001DMS <br />Sample Matrix Spike <br />Run G542M_130709A <br />07/12/13 02:27 <br />Gross Beta <br />203 pCi /L <br />108 <br />70 130 <br />Sample ID: C13070029 -001 DMSD <br />Sample Matrix Spike Duplicate <br />Run: G542M_130709A <br />07/12/13 02:27 <br />Gross Beta <br />208 pCi /L <br />111 <br />70 130 2.7 <br />13.7 <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 17 of 21 <br />