Compiled Reference Document - MCU25/0020 (As Published)

Quality Control Results


                                                                                                                                 Acceptance Pass Qualifying
                                Test                                       Units        Result 1                                   Limits   Limits Code
Method Blank
 Acidity (as CaCO3)                                                        mg/L            < 10                                     10          Pass
Method Blank
Heavy Metals
 Aluminium                                                                 mg/L          < 0.05                                     0.05        Pass
 Aluminium (filtered)                                                      mg/L          < 0.05                                     0.05        Pass
 Iron                                                                      mg/L          < 0.05                                     0.05        Pass
 Iron (filtered)                                                           mg/L          < 0.05                                     0.05        Pass
LCS - % Recovery
 Acidity (as CaCO3)                                                          %             109                                     70-130       Pass
 Chloride                                                                    %             109                                     70-130       Pass
 Sulphate (as SO4)                                                           %             115                                     70-130       Pass
LCS - % Recovery
Heavy Metals
 Aluminium                                                                   %             112                                     80-120    Pass
 Aluminium (filtered)                                                        %             112                                     80-120    Pass
 Iron                                                                        %             110                                     80-120    Pass
 Iron (filtered)                                                             %             109                                     80-120    Pass
                                                             QA                                                                  Acceptance Pass Qualifying
                   Test                Lab Sample ID                       Units        Result 1
                                                            Source                                                                 Limits   Limits Code
Spike - % Recovery
                                                                                        Result 1
 Chloride                              B25-Fe0031761          NCP            %            94                                       70-130       Pass
 Sulphate (as SO4)                     B25-Fe0034431          NCP            %            75                                       70-130       Pass
Spike - % Recovery
Heavy Metals                                                                            Result 1
 Aluminium                             B25-Fe0039672         NCP             %            119                                      75-125    Pass
 Aluminium (filtered)                  B25-Fe0046226         NCP             %            117                                      75-125    Pass
 Iron                                  B25-Fe0039672         NCP             %            119                                      75-125    Pass
 Iron (filtered)                       B25-Fe0042096         NCP             %            107                                      75-125    Pass
                                                             QA                                                                  Acceptance Pass Qualifying
                   Test                Lab Sample ID                       Units        Result 1
                                                            Source                                                                 Limits   Limits Code
Duplicate
                                                                                        Result 1       Result 2            RPD
 Acidity (as CaCO3)                    B25-Fe0047962           CP          mg/L           < 10           < 10               <1      30%         Pass
 Chloride                              B25-Fe0046256          NCP          mg/L          16000          19000               16      30%         Pass
 Conductivity (at 25 °C)               B25-Fe0050852          NCP         uS/cm          29000          29000               <1      30%         Pass
 pH (at 25 °C)                         B25-Fe0050852          NCP        pH Units         8.3            8.3                <1      30%         Pass
 Redox Potential mV (relative to
 Ag/AgCl)                              B25-Fe0049304          NCP          mV             360            360               <1       30%         Pass
 Sulphate (as SO4)                     B25-Fe0046256          NCP          mg/L           2600           2700              1.0      30%         Pass
Duplicate
Heavy Metals                                                                            Result 1       Result 2            RPD
 Aluminium                             B25-Fe0046924          NCP          mg/L          < 0.05         < 0.05              <1      30%         Pass
 Aluminium (filtered)                  B25-Fe0041676          NCP          mg/L          < 0.05         < 0.05              <1      30%         Pass
 Iron                                  B25-Fe0046924          NCP          mg/L           1.8            1.6                12      30%         Pass
 Iron (filtered)                       B25-Fe0041676          NCP          mg/L          < 0.05         < 0.05              <1      30%         Pass




                                        Eurofins Environment Testing 1/21 Smallwood Place, Murarrie, QLD, Australia 4172                               Page 8 of 9

  Date Reported: Feb 25, 2025                             ABN : 50 005 085 521 Tel: +61 7 3902 4600                                      Report Number: 1189604-W