Geotech Report · OPW19/0205

Quality Control Results


                                                                                                                    Acceptance Pass Qualifying
                               Test                                    Units        Result 1                          Limits   Limits Code
Method Blank
 Acidity (as CaCO3)                                                    mg/L            < 10                            10           Pass
 Chloride                                                              mg/L            <1                              1            Pass
 Sulphate (as SO4)                                                     mg/L            <5                              5            Pass
 Total Dissolved Solids                                                mg/L            < 10                            10           Pass
Method Blank
Alkalinity (speciated)
 Bicarbonate Alkalinity (as CaCO3)                                     mg/L            < 20                            20           Pass
 Carbonate Alkalinity (as CaCO3)                                       mg/L            < 10                            10           Pass
 Hydroxide Alkalinity (as CaCO3)                                       mg/L            < 20                            20           Pass
 Total Alkalinity (as CaCO3)                                           mg/L            < 20                            20           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
 Manganese (filtered)                                                  mg/L          < 0.005                          0.005         Pass
Method Blank
Alkali Metals
 Calcium                                                               mg/L            < 0.5                           0.5          Pass
 Magnesium                                                             mg/L            < 0.5                           0.5          Pass
 Potassium                                                             mg/L            < 0.5                           0.5          Pass
 Sodium                                                                mg/L            < 0.5                           0.5          Pass
LCS - % Recovery
 Chloride                                                                %             112                            70-130        Pass
 Sulphate (as SO4)                                                       %             104                            70-130        Pass
 Total Dissolved Solids                                                  %             110                            70-130        Pass
LCS - % Recovery
Alkalinity (speciated)
 Carbonate Alkalinity (as CaCO3)                                         %             113                            70-130        Pass
 Total Alkalinity (as CaCO3)                                             %             121                            70-130        Pass
LCS - % Recovery
Heavy Metals
 Aluminium                                                               %             98                             80-120        Pass
 Aluminium (filtered)                                                    %             101                            80-120        Pass
 Iron                                                                    %             96                             80-120        Pass
 Iron (filtered)                                                         %             95                             80-120        Pass
 Manganese (filtered)                                                    %             95                             80-120        Pass
LCS - % Recovery
Alkali Metals
 Calcium                                                                 %             103                            70-130    Pass
 Magnesium                                                               %             105                            70-130    Pass
 Potassium                                                               %             99                             70-130    Pass
 Sodium                                                                  %             100                            70-130    Pass
                                                         QA                                                         Acceptance Pass Qualifying
                  Test                Lab Sample ID                    Units        Result 1
                                                        Source                                                        Limits   Limits Code
Spike - % Recovery
Heavy Metals                                                                        Result 1
 Aluminium                            M18-No26800         NCP            %            106                             75-125        Pass
 Aluminium (filtered)                 M18-No21029         NCP            %            102                             75-125        Pass
 Iron                                 M18-No26800         NCP            %            101                             75-125        Pass




                                              Eurofins | mgt 1/21 Smallwood Place, Murarrie, QLD, Australia, 4172                         Page 9 of 11
 Date Reported: Nov 26, 2018                         ABN : 50 005 085 521 Telephone: +61 7 3902 4600                          Report Number: 627963-W