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O - www.energylab.com r Helena,MT$77-472-0711 •Billings,MT 800-735-4480•Casper,WY OW235-0515 <br /> Amtj*>I,Ja§MW ft a 1Z2 J Gillette,WY 066-666-7175•Rapid City,SD 808-672-1225•College Station,TX 888-690-2218 <br /> QA/QC Summary Report <br /> Prepared by Casper, WY Branch <br /> Client: Cotter Corporation Report Date: 04/28/14 <br /> Project: Schwartz GW 04/09/14 S27455, S27457 Work Order: C14040376 <br /> Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual <br /> Method: E903.0 Batch: RA226-7145 <br /> Lab ID: C1 4040415-001 EMS Sample Matrix Spike Run:G5000W_140415B 04/21/14 10:30 <br /> Radium 226 19 pCi/L 81 70 130 <br /> Lab ID: C14040415-001EMSD Sample Matrix Spike Duplicate Run:G5000W_140415B 04/21/14 10:30 <br /> Radium 226 18 pCi/L 77 70 130 4.1 21.7 <br /> Lab ID: MB-RA226-7145 3 Method Blank Run:G5000W 140415E 04/21/14 10:30 <br /> Radium 226 0.2 pCi/L <br /> Radium 226 precision(±) 0.1 pCi/L <br /> Radium 226 MDC 0.2 pCi/L <br /> Lab ID: LCS-RA226-7145 Laboratory Control Sample Run:G5000W_140415B 04/21/14 10:30 <br /> Radium 226 9.9 pCi/L 86 80 120 <br /> Method: E903.0 Batch:RA226-7142 <br /> Lab ID: C14040375-001GMS Sample Matrix Spike Run:G542M_140411A 04/21/14 10:31 <br /> Radium 226 22 pCi/L 94 70 130 <br /> Lab ID: C14040375-001GMSD Sample Matrix Spike Duplicate Run:G542M_140411A 04/21/14 10:31 <br /> Radium 226 22 pCi/L 97 70 130 2.3 21.5 <br /> Lab ID: MB-RA226-7142 3 Method Blank Run:G542M_140411A 04/21/14 12:06 <br /> Radium 226 0.06 pCi/L U <br /> Radium 226 precision(±) 0.10 pCi/L <br /> Radium 226 MDC 0.2 pCi/L <br /> Lab ID: LCS-RA226-7142 Laboratory Control Sample Run:G542M_140411A 04/21/14 12:06 <br /> Radium 226 11 pCi/L 93 80 120 <br /> Qualifiers: <br /> RL-Analyte reporting limit. ND-Not detected at the reporting limit. <br /> MDC-Minimum detectable concentration U-Not detected at minimum detectable concentration <br /> Page 21 of 26 <br />