Acid Sulfate Management Plan · MCU16/0103

                                                               LABORATORY CONTROL SAMPLES                                                                       BE018333 R0



     Laboratory Control Standard (LCS) results are evaluated against an expected result, typically the concentration of analyte spiked into the control during the sample
     preparation stage, producing a percentage recovery. The criteria applied to the percentage recovery is established in the SGS QA /QC plan (Ref: MP-(AU)-[ENV]QU-022). For
     more information refer to the footnotes in the concluding page of this report.

     Recovery is shown in Green when within suggested criteria or Red with an appended dagger symbol (†) when outside suggested criteria.




Alkalinity                                                                                                                                                      Method: ME-(AU)-[ENV]AN135
 Sample Number                           Parameter                                                                     Units        LOR     Result   Expected     Criteria %   Recovery %
 LB028678.005                            Total Alkalinity as CaCO3                                                    mg/L           5        61       59.5         85 - 115      102
 LB028678.006                            Total Alkalinity as CaCO3                                                    mg/L           5       240       229          85 - 115      104
 LB028678.040                            Total Alkalinity as CaCO3                                                    mg/L           5        64       59.5         85 - 115      107
 LB028678.041                            Total Alkalinity as CaCO3                                                    mg/L           5       240       229          85 - 115      103

Chloride by Discrete Analyser in Water                                                                                                                          Method: ME-(AU)-[ENV]AN274
 Sample Number                           Parameter                                                                     Units        LOR     Result   Expected     Criteria %   Recovery %
 LB028711.002                            Chloride, Cl                                                                 mg/L           1        10        10          85 - 115      102
 LB028711.003                            Chloride, Cl                                                                 mg/L           1       100       100          85 - 115      102
 LB028711.028                            Chloride, Cl                                                                 mg/L           1        10        10          85 - 115      104
 LB028711.029                            Chloride, Cl                                                                 mg/L           1       100       100          85 - 115      101
 LB028711.054                            Chloride, Cl                                                                 mg/L           1        10        10          85 - 115      103
 LB028711.055                            Chloride, Cl                                                                 mg/L           1       100       100          85 - 115      102

Metals in Water (Dissolved) by ICPOES                                                                                                                  Method: ME-(AU)-[ENV]AN320/AN321
 Sample Number                           Parameter                                                                     Units        LOR     Result   Expected     Criteria %   Recovery %
 LB028720.002                            Magnesium, Mg                                                                mg/L          0.1      1.9        2           80 - 120       97
                                         Potassium, K                                                                 mg/L          0.1       19        20          80 - 120       97
                                         Sodium, Na                                                                   mg/L          0.5      1.9        2           80 - 120       97

Sulphate in water                                                                                                                                               Method: ME-(AU)-[ENV]AN275
 Sample Number                           Parameter                                                                     Units        LOR     Result   Expected     Criteria %   Recovery %
 LB028710.002                            Sulphate, SO4                                                                mg/L           1        10        10          85 - 115      104
 LB028710.003                            Sulphate, SO4                                                                mg/L           1       100       100          85 - 115      102
 LB028710.028                            Sulphate, SO4                                                                mg/L           1        10        10          85 - 115      103
 LB028710.029                            Sulphate, SO4                                                                mg/L           1       100       100          85 - 115      103

Trace Metals (Dissolved) in Water by ICPMS                                                                                                                      Method: ME-(AU)-[ENV]AN318
 Sample Number                           Parameter                                                                     Units        LOR     Result   Expected     Criteria %   Recovery %
 LB028721.002                            Iron, Fe                                                                     µg/L           5        23        20          80 - 120      116




21/10/2016                                                                                                                                                                       Page 6 of 9