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Trust our People.Ttust our Data. <br />B Ilei;;. MT 800335.4489 :)na;,ei "Y 888.235.0515 <br />College Station. TX 888.690.2218 • G ll to WY 866.686.7115 , Helena MT 817.472.0711 <br />QA/QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation <br />Project: Schwartz - SW 9/02/15 S28357, S28359 th S28361 <br />Report Date: 09/28/15 <br />Work Order: C15090164 <br />Analyte <br />Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Method: RA -05 <br />Lab ID: LCS-228-RA226-7826 Laboratory Control Sample <br />Radium 228 <br />Lab ID: MB-RA226-7826 <br />Radium 228 <br />Radium 228 precision (±) <br />Radium 228 MDC <br />6.9 pCi/L <br />3 Method Blank <br />0 5 pCi/L <br />0.7 pCi/L <br />1 pCi/L <br />Run. TENNELEC-3_150914A <br />85 80 120 <br />Batch: RA228-5038 <br />09/17/15 12:14 <br />Run: TENNELEC-3_150914A 09/17/15 12:14 <br />U <br />Lab ID: C15090209-001EMS Sample Matrix Spike Run: TENNELEC-3_150914A 09/17/15 12:14 <br />Radium 228 14 8 pCi/L 97 70 130 <br />Lab ID: C15090209-001 EMSD Sample Matrix Spike Duplicate Run: TENNELEC-3_150914A 09/17/15 12:14 <br />Radium 228 14.2 pCi/L 93 70 130 4 2 51.9 <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 24 of 31 <br />