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Trust our People. Trust our Data. Billings, MT 800.735.4489 • Casper, WY 888.235.0515 <br />College Station, TX 888.690.2218 • Gillette. WY 866.686.7175 • Helena, MT 877.472.0711 <br />QA/QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation <br />Report Date: <br />05/07/15 <br />Project: Schwartz - GW 4/14/15 S27854, S27857 <br />Work Order: <br />C15040486 <br />Analyte <br />Count Result Units <br />RL %aREC Low Limit High Limit RPD <br />RPDLimit Qual <br />Method: E900.0 <br />Batch: GrAB-1999 <br />Lab ID: Th230-GrAB-1999 <br />Laboratory Control Sample <br />Run: G5000W_150417A <br />04/20/15 19:11 <br />Gross Alpha <br />114 pCi/L <br />99 80 120 <br />Lab ID: MB-GrAB-1999 <br />6 Method Blank <br />Run: G5000W 150417A <br />04/20/15 19:11 <br />Gross Alpha <br />0.09 pCi/L <br />U <br />Gross Alpha precision (t) <br />0.7 pCi/L <br />Gross Alpha MDC <br />1 pCi/L <br />Gross Beta <br />-0.5 pCi/L <br />U <br />Gross Beta precision (t) <br />2 pCi/L <br />Gross Beta MDC <br />3 pCi/L <br />Lab ID: C15040505-001FDUP <br />6 Sample Duplicate <br />Run: G5000W_150417A <br />04/20/15 19:11 <br />Gross Alpha <br />5.42 pCi/L <br />39 <br />84.9 <br />Gross Alpha precision (t) <br />1.78 pCi/L <br />Gross Alpha MDC <br />1.35 pCi/L <br />Gross Beta <br />2.71 pCi/L <br />8.4 <br />120 <br />Gross Beta precision (t) <br />1.35 pCi/L <br />Gross Beta MDC <br />2.66 pCi/L <br />Lab ID: C15040505-004IMS <br />Sample Matrix Spike <br />Run: G5000W_150417A <br />04/20/15 19:11 <br />Gross Alpha <br />174 pCi/L <br />141 70 130 <br />S <br />- Spike response is outside of the acceptance range for this analysis. Since the LCS and the RPD for the Duplicate are acceptable the batch is approved. <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 23 of 30 <br />