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• www.ertergylab.com Helena,Ulf$77-472-0711 •Billings,MT 800-735-4489•Casper,WY 888-235-0515 <br /> F' ' '►mot Gillette,WY 866-686-7175•Rapid City,so 888-672-1225•College Station,A 888-680-2218 <br /> QA/QC Summary Report <br /> Prepared by Casper, WY Branch <br /> Client: Cotter Corporation Report Date: 07/11/14 <br /> Project: Schwartz-GW 6/16/14 S27576 Work Order: C14060740 <br /> Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual <br /> Method: RA-05 Batch: RA228-4695 <br /> Lab ID: LCS-228-RA226-7238 Laboratory Control Sample Run:TENNELEC-3_140623D 07/03/14 08:59 <br /> Radium 228 8.2 pCi/L 109 80 120 <br /> Lab ID: MB-RA226-7238 3 Method Blank Run:TENNELEC-3 140623D 07/03/14 08:59 <br /> Radium 228 0.7 pCi/L U <br /> Radium 228 precision(±) 0.6 pCi/L <br /> Radium 228 MDC 1.0 pCi/L <br /> Lab ID: C14060718-001GMS Sample Matrix Spike Run:TENNELEC-3_140623D 07/03/14 08:59 <br /> Radium 228 18.2 pCi/L 116 70 130 <br /> Lab ID: C14060718-001GMSD Sample Matrix Spike Duplicate Run:TENNELEC-3_140623D 07/03/14 08:59 <br /> Radium 228 18.7 pCi/L 120 70 130 2.6 32.5 <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 10 of 13 <br />