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www.enerdab.com j Helena, MT 877472 -0711 • Billings, MT 800- 735 -4489 • Casper, WY 888- 235 -0515 <br />,N J Gillette, WY 866- 686 -7175 • Rapid City, SD 888 -672 -1225 • College Station, TX 868- 690 -2218 <br />QA /QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation <br />Report Date: <br />02/17/15 <br />Project: Schwartz - GW 1/28/15 <br />S28066, S28069, S28071 <br />Work Order: <br />015010751 <br />Analyte <br />Count Result Units <br />RL %REC <br />Low Limit High Limit RPD <br />RPDLimit Qual <br />Method: E900.0 <br />Batch: GrAB -1944 <br />Lab ID: Th230 -GrAB -1944 <br />Laboratory Control Sample <br />Run: G5000W_150205A <br />02/06/15 20:14 <br />Gross Alpha <br />143 pCi /L <br />107 <br />80 120 <br />Lab ID: Sr90 -GrAB -1944 <br />Laboratory Control Sample <br />Run: G5000W_150205A <br />02/06/15 20:14 <br />Gross Beta <br />190 pCi /L <br />96 <br />80 120 <br />Lab ID: MB -GrAB -1944 <br />6 Method Blank <br />Run: G5000W 150205A <br />02/06/15 20:14 <br />Gross Alpha <br />-0.06 pCi /L <br />U <br />Gross Alpha precision ( ±) <br />0.8 pCi /L <br />Gross Alpha MDC <br />1 pCi /L <br />Gross Beta <br />-0.9 pCi /L <br />U <br />Gross Beta precision ( ±) <br />2 pCi /L <br />Gross Beta MDC <br />3 pCi /L <br />Lab ID: C15010753- 001ADUP <br />6 Sample Duplicate <br />Run: G5000W_150205A <br />02/06/15 20:14 <br />Gross Alpha <br />30.9 pCi /L <br />11 <br />53.6 <br />Gross Alpha precision ( ±) <br />6.80 pCi /L <br />Gross Alpha MDC <br />2.15 pCi /L <br />Gross Beta <br />13.7 pCi /L <br />11 <br />40.5 <br />Gross Beta precision ( ±) <br />2.19 pCi /L <br />Gross Beta MDC <br />2.92 pCi /L <br />Lab ID: C15010753- 004AMS <br />Sample Matrix Spike <br />Run: G5000W_150205A <br />02/06/15 20:14 <br />Gross Alpha <br />115 pCi /L <br />70 <br />70 130 <br />Lab ID: 015010753- 004AMS <br />Sample Matrix Spike <br />Run: G5000W_150205A <br />02/06/15 20:14 <br />Gross Beta <br />215 pCi /L <br />102 <br />70 130 <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 15 of 23 <br />