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/ j, Pace Analytical <br /> �CE <br /> 1673 Terra Avenue Sheridan,WY 82801 ph:(307)672-8945 <br /> ANALYTICAL QC SUMMARY REPORT <br /> CLIENT: Energy Fuels Resources(USA)Inc. Date: 3/22/2023 <br /> Work Order: S2302101 Report ID: S2302101001 <br /> Project: Whirlwind <br /> Anions by ION Chromatography Sample Type: MBLK Units. mg/L <br /> 8LK(02/09123 19:16) RunNo:207897 <br /> Analyte Result RL Spike Ref Samp %REC %Rec Limits Qual <br /> Chloride ND 1 <br /> Sulfate ND 1 <br /> Anions by ION Chromatography Sample Type: LCS Units: mg/L <br /> LCS 1 (02/09/23 16:58) RunNo:207897 <br /> Analyte Result RL Spike Ref Samp %REC %Rec Limits Qual <br /> Chloride 5 1 4.76 96.4 90-110 <br /> Sulfate 33 1 35.7 92.8 90-110 <br /> LCS 2(02/09/23 21:44) RunNo:207897 <br /> Analyte Result RL Spike Ref Samp %REC %Rec Limits Qual <br /> Chloride 5 1 4.76 94.7 90-110 <br /> Sulfate 33 1 35.7 91.8 90-110 <br /> Anions by ION Chromatography Sample Type: MS Units- mg/L <br /> S23021 1 0-001ASPK(02/10/23 18:30) RunNo:207923 <br /> Analyte Result RL Spike Ref Samp %REC %Rec Limits Qual <br /> Sulfate 648 1 393 250 101 80-120 <br /> Anions by ION Chromatography Sample Type: MSD Units: mg/L <br /> S2302110-001ASPKD(02/10/23 18:39) RunNo:207923 <br /> Analyte Result RL Conc %RPD %REC %RPD Limits Qual <br /> Sulfate 640 1 648 1.24 99.4 20 <br /> Anions by ION Chromatography Sample Type: DUP Units: mg/L <br /> S2302110-001AD(02/10/23 18:20) RunNo:207923 <br /> Analyte Result RL Ref Samp %RPD %REC %RPD Limits Qual <br /> Sulfate 250 1 250 0.123 20 <br /> Page 8of16 <br />