Geotech Report Reference Document OPW19-0239 · OPW19/0239

                                                  QA                                                                Acceptance Pass Qualifying
                  Test         Lab Sample ID                    Units        Result 1
                                                 Source                                                               Limits   Limits Code
 Iron (filtered)               M18-No21029        NCP             %              94                                   70-130    Pass
 Manganese (filtered)          M18-No21029        NCP             %              94                                   70-130    Pass
Spike - % Recovery
Alkali Metals                                                                Result 1
 Calcium                       M18-No22350        NCP             %            98                                     70-130    Pass
 Magnesium                     M18-No22350        NCP             %            89                                     70-130    Pass
 Potassium                     M18-No22350        NCP             %            92                                     70-130    Pass
 Sodium                        M18-No22350        NCP             %            94                                     70-130    Pass
                                                  QA                                                                Acceptance Pass Qualifying
                  Test         Lab Sample ID                    Units        Result 1
                                                 Source                                                               Limits   Limits Code
Duplicate
                                                                             Result 1        Result 2        RPD
 Chloride                      M18-No24306         NCP          mg/L           16              16             <1       30%         Pass
 Sulphate (as SO4)             M18-No26798         NCP          mg/L           <5              <5             <1       30%         Pass
 Total Dissolved Solids        B18-No20270          CP          mg/L           370             380            2.0      30%         Pass
Duplicate
Heavy Metals                                                                 Result 1        Result 2        RPD
 Aluminium                     M18-No26800         NCP          mg/L          < 0.05          < 0.05          <1       30%         Pass
 Aluminium (filtered)          M18-No21029         NCP          mg/L          < 0.05          < 0.05          <1       30%         Pass
 Iron                          M18-No26800         NCP          mg/L          < 0.05          < 0.05          <1       30%         Pass
 Iron (filtered)               M18-No21029         NCP          mg/L          < 0.05          < 0.05          <1       30%         Pass
 Manganese (filtered)          M18-No21029         NCP          mg/L         < 0.005         < 0.005          <1       30%         Pass
Duplicate
Alkali Metals                                                                Result 1        Result 2        RPD
 Calcium                       B18-No19745         NCP          mg/L           <5              <5             <1       30%         Pass
 Magnesium                     B18-No19745         NCP          mg/L           23              22             5.0      30%         Pass
 Potassium                     B18-No19745         NCP          mg/L          2000            1900            5.0      30%         Pass
 Sodium                        B18-No19745         NCP          mg/L          2600            2500            4.0      30%         Pass




                                       Eurofins | mgt 1/21 Smallwood Place, Murarrie, QLD, Australia, 4172                              Page 10 of 11
 Date Reported: Nov 26, 2018                  ABN : 50 005 085 521 Telephone: +61 7 3902 4600                                Report Number: 627963-W