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www.efwdab.com Helena,MT 677472-0711 •Billings,MT 800-735-4489•Casper,WY 888-235-0515 <br /> Ocaftw Rm IJU 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 Report Date: 06/24/14 <br /> Project: Schwartz-SW 6/2/14 S27527 TH S27533 Work Order: C14060071 <br /> Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual <br /> Method: RA-05 Batch: RA228-4679 <br /> Lab ID: LCS-228-RA226-7211 Laboratory Control Sample Run:TENNELEC-3_140604D 06/10/14 12:01 <br /> Radium 228 9.8 pCi/L 112 80 120 <br /> Lab ID: MB-RA226-7211 3 Method Blank Run:TENNELEC-3 140604D 06/10/14 12:01 <br /> Radium 228 2 pCi/L <br /> Radium 228 precision(±) 0.9 pCi/L <br /> Radium 228 MDC 1 pCi/L <br /> Lab ID: C14060034-002HMS Sample Matrix Spike Run:TENNELEC-3_140604D 06/10/14 12:01 <br /> Radium 228 16.5 pCi/L 111 70 130 <br /> Lab ID: C14060034-002HMSD Sample Matrix Spike Duplicate Run:TENNELEC-3_140604D 06/10/14 12:01 <br /> Radium 228 14.8 pCi/L 100 70 130 11 39.1 <br /> Qualifiers: <br /> RL-Analyte reporting limit. ND-Not detected at the reporting limit. <br /> MDC-Minimum detectable concentration <br /> Page 29 of 38 <br />