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ENERGY Trust our People.Trust our Data. f Billings,MT 800.735.4489•Casper.WY 888.235.0515 <br /> • � College Station,TX 888.690.2218•Gillette,WY 866.686.7115•Helena.MT 877.412.0111 <br /> QA/QC Summary Report <br /> Prepared by Casper, WY Branch <br /> Client: Cotter Corporation Report Date: 04/01/16 <br /> Project: Schwartz-GW 3/3/16 S28700,S28702 Work Order: C16030185 <br /> Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual <br /> Method: E900.0 Batch: GrAB-2213 <br /> Lab ID: Th230-GrAB-2213 Laboratory Control Sample Run:G5000W_160328B 03/31/16 23.49 <br /> Gross Alpha 116 pCi/L 116 80 120 <br /> Lab ID: MB-GrAB-2213 6 Method Blank Run:G5000W_160328B 03/31/16 23:49 <br /> Gross Alpha 0.3 pCi/L U <br /> Gross Alpha precision(±) 0.7 pCi/L <br /> Gross Alpha MDC 1 pCi/L <br /> Gross Beta -1 pCi/L U <br /> Gross Beta precision(±) 2 pCi/L <br /> Gross Beta MDC 3 pCi/L <br /> Lab ID: C16030457-002DMS Sample Matrix Spike Run:G5000W_160328B 03/31/16 23:49 <br /> Gross Alpha 176 pCi/L 76 70 130 <br /> Lab ID: C16030457-002DMSD Sample Matrix Spike Duplicate Run:G5000W_160328B 03/31/16 23:49 <br /> Gross Alpha 139 pCi/L 39 70 130 23 49.4 S <br /> -Spike response is outside of the acceptance range for this analysis Since the LCS and the RPD recoveries are acceptable,the response is considered to be matrix related <br /> The batch is approved <br /> Qualifiers: <br /> RL-Analyte reporting limit. ND-Not detected at the reporting limit. <br /> MDC-Minimum detectable concentration S-Spike recovery outside of advisory limits. <br /> U-Not detected at minimum detectable concentration <br /> Page 12 of 18 <br />