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• Trust our People. Trust our Data. Billings, MT 800.735.4489 • Casper, WY 888.235.0515 <br />a 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 />Project: Schwartz - SW 5/1/15 S27880, S27882 <br />Analyte <br />Count Result <br />Units <br />Method: E900.0 <br />Lab ID: Th230-GrAB-2020 <br />Laboratory Control <br />Sample <br />Gross Alpha <br />106 <br />pCi/L <br />Lab ID: Sr90-GrAB-2020 <br />Laboratory Control Sample <br />Gross Beta <br />184 <br />pCi/L <br />Lab ID: MB-GrAB-2020 <br />6 Method Blank <br />Gross Alpha <br />0.9 <br />pCi/L <br />Gross Alpha precision (t) <br />0.7 <br />pCi/L <br />Gross Alpha MDC <br />1 <br />pCi/L <br />Gross Beta <br />0.3 <br />pCi/L <br />Gross Beta precision (±) <br />2 <br />pCi/L <br />Gross Beta MDC <br />3 <br />pCi/L <br />Lab ID: C15050309-003CDUP <br />6 Sample Duplicate <br />Gross Alpha <br />19.6 <br />pCi/L <br />Gross Alpha precision (±) <br />5.23 <br />pCi/L <br />Gross Alpha MDC <br />3.31 <br />pCi/L <br />Gross Beta <br />5.08 <br />pCi/L <br />Gross Beta precision (±) <br />1.80 <br />pCi/L <br />Gross Beta MDC <br />3.62 <br />pCi/L <br />Lab ID: C15050078-002DMS <br />Sample Matrix Spike <br />Gross Alpha <br />123 <br />pCi/L <br />Lab ID: C15050078-002DMS <br />Sample Matrix <br />Spike <br />Gross Beta <br />218 <br />pCi/L <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />Report Date: 06/02/15 <br />Work Order: C15050078 <br />RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Batch: GrAB-2020 <br />Run: G5000W_150512B 05/15/15 05:50 <br />105 80 120 <br />Run: G5000W 150512B 05/15/15 05:50 <br />93 80 120 <br />Run: G5000W_150512B 05/15/15 05:50 <br />U <br />U <br />Run: G5000W_150512B 05/15/15 05:51 <br />4.4 61 <br />51 65.9 <br />Run: G5000W 150512B 05/15/15 05:51 <br />104 70 130 <br />Run: G5000W 150512B 05/15/15 05:51 <br />108 70 130 <br />ND - Not detected at the reporting limit. <br />U - Not detected at minimum detectable concentration <br />Page 23 of 31 <br />