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J'n/Ce�l�ca' Pace Analytical <br /> �e 1673 Terra Avenue Sheridan,WY 82801 ph:(307)672-8945 <br /> ANALYTICAL QC SUMMARY REPORT <br /> CLIENT: Energy Fuels Resources(USA)Inc. Date: 4/5/2024 <br /> Work Order: S2403321 Report ID: S2403321001 <br /> Project: Whirlwind Waste Rock-SPLP <br /> Anions by ION Chromatography Sample Type MS Units: mg/L <br /> S2403320-001ASPK(03/23/24 14:09) RunNo:219411 <br /> Analyte Result RL Spike Ref Samp %REC %Rec Limits Qual <br /> Sulfate 996 3.86 571 412 102 80-120 D <br /> Anions by ION Chromatography Sample Type MSD Units: mg/L <br /> S2403320-001ASPKD(03/23/24 14:18) RunNo:219411 <br /> Analyte Result RL Conc %RPD %REC %RPD Limits Qual <br /> Chloride 203 1.00 203 0.0308 101 20 <br /> Sulfate 997 3.86 996 0.134 102 20 D <br /> Anions by ION Chromatography Sample Type DUP Units: mg/L <br /> S2403320-001AD(03/23/24 14:00) RunNo:219411 <br /> Analyte Result RL Ref Samp %RPD %REC %RPD Limits Qual <br /> Chloride 126 1.00 126 0.00183 20 <br /> Sulfate 412 3.86 412 0.0693 20 D <br /> Cations by ICP(Method 200.7) Sample Type MBLK Units: mg/L <br /> MBLK DISS/CAT(03/25/24 13:12) RunNo:219422 <br /> Analyte Result RL Spike Ref Samp %REC %Rec Limits Qual <br /> Calcium ND 1.00 <br /> Magnesium ND 1.00 <br /> Potassium ND 1.00 <br /> Sodium ND 2.00 <br /> Cations by ICP(Method 200.7) Sample Type LCS Units: mg/L <br /> DISS LCS(03/25/24 13:15) RunNo:219422 <br /> Analyte Result RL Spike Ref Samp %REC %Rec Limits Qual <br /> Calcium 42.5 1.00 41 104 85-115 <br /> Magnesium 41.7 1.00 41 102 85-115 <br /> Potassium 41.4 1.00 41 101 85-115 <br /> Sodium 39.0 2.00 41 95.2 85-115 <br /> Cations by ICP(Method 200.7) Sample Type MS Units: mg/L <br /> S2403320-002A5(03/25/24 16:11) RunNo:219422 <br /> Analyte Result RL Spike Ref Samp %REC %Rec Limits Qual <br /> Calcium 181 1.00 27.5 164 60.7 70-130 S <br /> Magnesium 220 1.00 27.5 202 66.7 70-130 S <br /> Potassium 47.3 1.00 27.5 16.2 113 70-130 <br /> Sodium 137 2.00 27.5 115 80.8 70-130 <br /> Cations by ICP(Method 200.7) Sample Type MSD Units: mg/L <br /> S2403320-002ASD(03/25/24 16:14) RunNo:219422 <br /> Analyte Result RL Conc %RPD %REC %RPD Limits Qual <br /> Calcium 181 1.00 181 0.333 58.5 20 S <br /> Magnesium 221 1.00 220 0.448 70.3 20 <br /> Potassium 47.9 1.00 47.3 1.26 115 20 <br /> Sodium 138 2.00 137 0.680 84.2 20 <br /> Page 8 of 10 <br />