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Pace Analytical <br /> aceAnalytical <br /> 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 MBLK Units: mg/L <br /> BLK(03/25/24 17:49) RunNo:219447 <br /> Analyte Result RL Spike Ref Samp %REC %Rec Limits Qual !I <br /> Chloride ND 1.00 <br /> Nitrate+Nitrite as N ND 0.0500 <br /> Sulfate ND 1.00 <br /> Nitrogen,Nitrate(As N) ND 0.0500 <br /> Nitrogen,Nitrite(As N) ND 0.0500 <br /> Anions by ION Chromatography Sample Type LCS Units: mg/L <br /> LCS 1 (03/22/24 18:35) RunNo:219411 <br /> Analyte Result RL Spike Ref Samp %REC %Rec Limits Qual <br /> Chloride 4.60 1.00 4.76 96.7 90-110 <br /> Nitrate+Nitrite as N ND 0.0500 <br /> Sulfate 33.6 1.00 35.7 94.3 90-110 <br /> Nitrogen,Nitrate(As N) 4.48 0.0500 4.76 94.1 90-110 <br /> Nitrogen,Nitrite(As N) 4.62 0.0500 4.76 97.0 90-110 <br /> LCS 2(03/22/24 23:02) RunNo:219411 <br /> Analyte Result RL Spike Ref Samp %REC %Rec Limits Qual <br /> Chloride 4.62 1.00 4.76 97.0 90-110 <br /> Nitrate+Nitrite as N ND 0.0500 <br /> Sulfate 33.6 1.00 35.7 94.2 90-110 <br /> Nitrogen,Nitrate(As N) 4.53 0.0500 4.76 95.1 90-110 <br /> Nitrogen,Nitrite(As N) 4.61 0.0500 4.76 96.9 90-110 <br /> LCS 4(03/23/24 07:58) RunNo:219411 <br /> Analyte Result RL Spike Ref Samp %REC %Rec Limits Qual <br /> Chloride 4.66 1.00 4.76 97.9 90-110 <br /> Nitrate+Nitrite as N ND 0.0500 <br /> Sulfate 33.9 1.00 35.7 95.0 90-110 <br /> Nitrogen,Nitrate(As N) 4.57 0.0500 4.76 96.0 90-110 <br /> Nitrogen,Nitrite(As N) 4.64 0.0500 4.76 97.5 90-110 <br /> LCS 3(03/26/24 02:53) RunNo:219447 <br /> Analyte Result RL Spike Ref Samp %REC %Rec Limits Qual <br /> Chloride 4.52 1.00 4.76 94.9 90-110 <br /> Nitrate+Nitrite as N ND 0.0500 <br /> Sulfate 32.8 1.00 35.7 91.7 90-110 <br /> Nitrogen,Nitrite(As N) 4.33 0.0500 4.76 91.0 90-110 <br /> LCS 5(03/26/24 11:49) RunNo:219447 <br /> Analyte Result RL Spike Ref Samp %REC %Rec Limits Qual <br /> Chloride 4.43 1.00 4.76 93.0 90-110 <br /> Nitrate+Nitrite as N ND 0.0500 <br /> Sulfate 32.9 1.00 35.7 92.1 90-110 <br /> Nitrogen,Nitrite(As N) 4.30 0.0500 4.76 90.4 90-110 <br /> Anions by ION Chromatography Sample Type MS Units: mg/L <br /> 52403320-001ASPK(03/23/24 14:09) RunNo:219411 <br /> Analyte Result RL Spike Ref Samp %REC %Rec Limits Qual , <br /> Chloride 203 1.00 76.2 126 101 80-120 <br /> Page 7 of 10 <br />