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• www.mwdab.com Helena, MT 877 - 472 -0711 • Billings, MT 800- 735 -4489 • Casper, WY 888 - 235 -8515 <br />AWAW xe rnc. $I= t99Y f Gillette, WY 866 -686 -7175 • Rapid City, SD 886 -672 -1225 • College Station, TX 888- 690 -2218 <br />QA /QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation <br />Project: Schwartz -GW 9/16/14 S27663 <br />Report Date: 09/30/14 <br />Work Order: C14090659 <br />Analyte <br />Count Result <br />Units <br />RL %REC Low Limit High Limit RPD <br />RPDLimit Qual <br />Method: RA -05 <br />Batch: RA228 -4770 <br />Lab ID: LCS- 228 -RA226 -7376 <br />Laboratory Control <br />Sample <br />Run: TENNELEC- 3_140918C <br />09/23/14 12:39 <br />Radium 228 <br />7.2 <br />pCi /L <br />116 80 120 <br />Lab ID: MB -RA226 -7376 <br />3 Method Blank <br />Run: TENNELEC -3 140918C <br />09/23/14 12:39 <br />Radium 228 <br />-0.6 <br />pCi /L <br />U <br />Radium 228 precision ( ±) <br />1 <br />pCi /L <br />Radium 228 MDC <br />2 <br />pCi /L <br />Lab ID: C14070373- 006GDUP 3 Sample Duplicate <br />Radium 228 1.6 pCi /L <br />Radium 228 precision ( ±) 1.7 pCi /L <br />Radium 228 MDC 2.7 pCi /L <br />Lab ID: C14090659- 001EMS Sample Matrix Spike <br />Radium 228 17 pCi /L <br />Lab ID: C14090659- 001EMSD Sample Matrix Spike Duplicate <br />Radium 228 18 pCi /L <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />Run: TENNELEC- 3_140918C 09/23/14 12:39 <br />19 278.7 U <br />Run: TENNELEC- 3_140918C 09/23/14 12:39 <br />108 70 130 <br />Run: TENNELEC- 3_140918C 09/23/14 12:39 <br />114 70 130 4.4 35.8 <br />ND - Not detected at the reporting limit. <br />U - Not detected at minimum detectable concentration <br />Page 10 of 13 <br />