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® Trust our People.Trust our Data. Billings,MT 800.135.4489•Casper,WY 888.235.0515 <br /> www.energylab.com mo V`' Gillette,WY 866.686.7175•Helena,MT 877.472.0711 <br /> QA/QC Summary Report <br /> Prepared by Casper, WY Branch <br /> Client: Energy Fuels Resources(USA) Inc Work Order: C22080249 Report Date: 08/13/22 <br /> LAnalyte Count Result Units RL %REC Low Limit High Limit RPD RPDLImit Qual <br /> Method: A4500-H B Analytical Run:PHSC_101-C_220805A <br /> Lab ID: 8.0 2 Initial Calibration Verification Standard 08/05/22 08:36 <br /> pH 8.0 S.U. 0.1 100 98 102 <br /> pH Measurement Temp 21.6 °C 0 0 <br /> Lab ID: CCV-pH 7 2 Continuing Calibration Verification Standard 08/05/22 11.03 <br /> pH 7.0 s.u. 0.1 101 98 102 <br /> pH Measurement Temp 20.4 °C 0 0 <br /> Method: A4500-H B Batch:R285577 <br /> Lab ID: C22080241-002BDUP 2 Sample Duplicate Run: PHSC_101-C_220805A 08/05/22 11:15 <br /> pH 7.6 s.u. 0.1 0.3 1.5 <br /> pH Measurement Temp 18.2 °C <br /> Qualifiers: <br /> RL-Analyte Reporting Limit ND-Not detected at the Reporting Limit(RL) <br /> Page 17 of 32 <br />