Acid Sulfate Management Plan · MCU16/0103

                                                                         MATRIX SPIKES                                                                    BE018333 R0



    Matrix Spike (MS) results are evaluated as the percentage recovery of an expected result, typically the concentration of analyte spiked into a field sub -sample during the
    sample preparation stage. The original sample 's result is subtracted from the sub -sample result before determining the 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 reason identifer when outside suggested criteria. Refer to the footnotes section at the
    end of this report for failure reasons.




Chloride by Discrete Analyser in Water                                                                                                                    Method: ME-(AU)-[ENV]AN274
 QC Sample          Sample Number                Parameter                                                     Units        LOR       Result     Original       Spike    Recovery%
 BE018317.001       LB028711.005                 Chloride, Cl                                                  mg/L           1         95          67           25          110
 BE018339.003       LB028711.034                 Chloride, Cl                                                  mg/L           1         26         0.17          25          104



Metals in Water (Dissolved) by ICPOES                                                                                                            Method: ME-(AU)-[ENV]AN320/AN321
 QC Sample          Sample Number                Parameter                                                     Units        LOR       Result     Original       Spike    Recovery%
 BE018333.001       LB028720.005                 Magnesium, Mg                                                 mg/L          0.1       140          88           52          107
                                                 Potassium, K                                                  mg/L          0.1        96          35           52          117
                                                 Sodium, Na                                                    mg/L          0.5       520         480           52          71

Sulphate in water                                                                                                                                         Method: ME-(AU)-[ENV]AN275
 QC Sample          Sample Number                Parameter                                                     Units        LOR       Result     Original       Spike    Recovery%
 BE018317.001       LB028710.005                 Sulphate, SO4                                                 mg/L           1        120          96           25          78
 BE018339.003       LB028710.034                 Sulphate, SO4                                                 mg/L           1         25        0.419          25          98




21/10/2016                                                                                                                                                                Page 7 of 9