Acid Sulfate Management Plan · MCU16/0103

                                                                                      DUPLICATES                                                                       BE018333 R0



     Duplicates are calculated as Relative Percentage Difference (RPD) using the formula: RPD = | OriginalResult - ReplicateResult | x 100 / Mean

     The RPD is evaluated against the Maximum Allowable Difference (MAD) criteria and can be graphically represented by a curve calculated from the Statistical Detection Limit
     (SDL) and Limiting Repeatability (LR) using the formula: MAD = 100 x SDL / Mean + LR

     Where the Maximum Allowable Difference evaluates to a number larger than 200 it is displayed as 200.

     RPD is shown in Green when within suggested criteria or Red with an appended reason identifer when outside suggested criteria. Refer to the footnotes section at the end of
     this report for failure reasons.




Alkalinity                                                                                                                                                                 Method: ME-(AU)-[ENV]AN135
 Original            Duplicate                            Parameter                                                            Units         LOR      Original    Duplicate      Criteria %   RPD %
 BE018339.003         LB028678.070                        Total Alkalinity as CaCO3                                            mg/L            5    0.0260010323 0.7869475143       200          0
 BE018349.003         LB028678.071                        Total Alkalinity as CaCO3                                            mg/L            5    22.824091996220.8555990966      38           9
 BE018352.005         LB028678.072                        Total Alkalinity as CaCO3                                            mg/L            5    90.401036428390.7428319305      21           0

Chloride by Discrete Analyser in Water                                                                                                                                     Method: ME-(AU)-[ENV]AN274
 Original            Duplicate                            Parameter                                                            Units         LOR      Original    Duplicate      Criteria %   RPD %
 BE018327.003         LB028711.015                        Chloride, Cl                                                         mg/L            1       1142.73      1130.9          15           1
 BE018338.006         LB028711.030                        Chloride, Cl                                                         mg/L            1        28.52       28.58           19           0
 BE018349.002         LB028711.042                        Chloride, Cl                                                         mg/L            1       926.54       928.33          15           0
 BE018352.005         LB028711.057                        Chloride, Cl                                                         mg/L            1       107.24       106.9           16           0
 BE018352.007         LB028711.058                        Chloride, Cl                                                         mg/L            1       8887.2       8818.1          15           1

Metals in Water (Dissolved) by ICPOES                                                                                                                            Method: ME-(AU)-[ENV]AN320/AN321
 Original            Duplicate                            Parameter                                                            Units         LOR      Original    Duplicate      Criteria %   RPD %
 BE018333.001         LB028720.004                        Magnesium, Mg                                                        mg/L           0.1        88           82            15           7
                                                          Potassium, K                                                         mg/L           0.1        35           35            15           1
                                                          Sodium, Na                                                           mg/L           0.5        480         490            15           2

Sulphate in water                                                                                                                                                          Method: ME-(AU)-[ENV]AN275
 Original            Duplicate                            Parameter                                                            Units         LOR      Original    Duplicate      Criteria %   RPD %
 BE018332.002         LB028710.015                        Sulphate, SO4                                                        mg/L            1        0.494       0.482           200          0
 BE018339.002         LB028710.030                        Sulphate, SO4                                                        mg/L            1        8.788       8.796           26           0
 BE018355.001         LB028710.042                        Sulphate, SO4                                                        mg/L            1        17.9         9.58           22          57 ②
 BE018355.003         LB028710.044                        Sulphate, SO4                                                        mg/L            1       53.579       53.745          17           0

Trace Metals (Dissolved) in Water by ICPMS                                                                                                                                 Method: ME-(AU)-[ENV]AN318
 Original            Duplicate                            Parameter                                                            Units         LOR      Original    Duplicate      Criteria %   RPD %
 BE018333.001         LB028721.004                        Iron, Fe                                                             µg/L            5         48           46            26           4




21/10/2016                                                                                                                                                                                    Page 5 of 9