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www.energylab.com Helena,IWIT$77-472-0711 •Billings,MI •Casper,WY 888-235-0515 <br /> AWAW&tahmSlaw I Gillette,WY 866-686-7175•Rapid City,SD 886-672-1225•College Station,TX 888-600-2218 <br /> QA/QC Summary Report <br /> Prepared by Casper, WY Branch <br /> Client: Cotter Corporation Report Date: 08/13/14 <br /> Project: Schwartz-GW 7/23/14 S27590,S27594 Work Order: C14070848 <br /> Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual <br /> Method: RA-05 Batch: RA228-4725 <br /> Lab ID: LCS-228-RA226-7291 Laboratory Control Sample Run:TENNELEC-3_140729A 08/06/14 13:37 <br /> Radium 228 7.4 pCi/L 111 80 120 <br /> Lab ID: MB-RA226-7291 3 Method Blank Run:TENNELEC-3 140729A 08/06/14 13:37 <br /> Radium 228 -0.3 pCi/L U <br /> Radium 228 precision(±) 0.8 pCi/L <br /> Radium 228 MDC 1 pCi/L <br /> Lab ID: C14070816-002FMS Sample Matrix Spike Run:TENNELEC-3_140729A 08/06/14 13:37 <br /> Radium 228 15.6 pCi/L 117 70 130 <br /> Lab ID: C14070816-002FMSD Sample Matrix Spike Duplicate Run:TENNELEC-3_140729A 08/06/14 13:37 <br /> Radium 228 13.8 pCi/L 104 70 130 12 39.4 <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 25 <br />