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wwwoewab.com Helena, MT 877 -472 -0711 a Billings, W 888- 7354488 a Casper, WY 888 -235 -8515 <br />,Md�4kaiE rime. tl9Y Gillette, WY 866 -686 -7175 a Rapid City, SO 888 -672 -1225 a College Station, TX 888- 680 -2218 <br />QA/QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation <br />Report Date: <br />10/24/13 <br />Project: Schwartz GW 9/25/13 <br />S27178 & S27179 <br />Work Order: <br />C13091022 <br />Analyte Count Result Units <br />RL 0/6REC <br />Low Limit High Limit RPD <br />1 <br />RPDLimit Qual <br />Method: E900.0 <br />Batch: GrAB -1635 <br />Sample ID: Th230 -GrAB -1635 <br />Laboratory Control Sample <br />Run: G542101 31007A <br />10/08/13 18:39 <br />Gross Alpha <br />117 pCi /L <br />110 <br />80 120 <br />Sample ID: Sr90 -GrAB -1635 <br />Laboratory Control Sample <br />Run: G542M_131007A <br />10/08/13 18:39 <br />Gross Beta <br />167 pCi /L <br />92 <br />80 120 <br />Sample ID: MB- GrAB -1635 <br />6 Method Blank <br />Run: G542M_131007A <br />10/08/13 18:39 <br />Gross Alpha <br />0.7 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 />1 pCi /L <br />U <br />Gross Beta precision ( ±) <br />1 pCi /L <br />Gross Beta MDC <br />2 pCi /L <br />Sample ID: C13091018- 024ADUP <br />6 Sample Duplicate <br />Run: G542M_131007A <br />10/08/13 1839 <br />Gross Alpha <br />5.20 pCi /L <br />5.1 <br />102.8 <br />Gross Alpha precision ( ±) <br />2.38 pCi /L <br />Gross Alpha MDC <br />3.61 pCi /L <br />Gross Beta <br />5.98 pCi /L <br />29 <br />101.8 <br />Gross Beta precision ( ±) <br />2.37 pCi /L <br />Gross Beta MDC <br />3.78 pCi /L <br />Sample ID: C13091022- 002GMS <br />Sample Matrix Spike <br />Run: G542M_131007A <br />10/09/13 08:34 <br />Gross Alpha <br />161 pCi /L <br />84 <br />70 130 <br />Sample ID: C13091022- 002GMSD <br />Sample Matrix Spike Duplicate <br />Run: G542M_131007A <br />10/09/13 08:34 <br />Gross Alpha <br />135 pCi /L <br />59 <br />70 130 18 <br />20 S <br />- Spike response is outside of the acceptance range for this analysis. Since the LCS and the RPD for the <br />MS MSD pair are acceptable, the response is considered to be <br />matrix related. The batch is approved <br />Sample ID: C13091022- 002GMS <br />Sample Matrix Spike <br />Run: G542M_131007A <br />10/09/13 08:34 <br />Gross Beta <br />187 pCi /L <br />96 <br />70 130 <br />Sample ID: C13091022- 002GMSD <br />Sample Matrix Spike Duplicate <br />Run: G542M_131007A <br />10/09/13 08:34 <br />Gross Beta <br />183 pCi /L <br />93 <br />70 130 2.5 <br />13.9 <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 26 <br />