ADG1304.21 Dewatering Management Plan_Rev1.1_17.12.24

                                                                                      ADG Consulting Pty Ltd


5.6   Groundwater treatment
      All extracted groundwater will be treated on‐site using available technologies prior to discharge to the
      stormwater network. The following treatment measures will be adopted, and will be installed and
      operational prior to the commencement of dewatering:

      1.    A groundwater pH buffering treatment system (primary treatment)
      2.    A sedimentation tank to provide additional residence time and sedimentation (secondary
            treatment).
      3.    Installation of fine media filtration to retain suspended sediments and/or heavy metals (tertiary
            treatment), if required.

      Details of the treatment systems and methodologies are provided in Section 0 of this report.

      Note: Consideration should be taken, regarding placement of treatment gear on site to enable easy
      cleaning and maintenance throughout the dewatering phase for the project. Consider the potential
      requirement for regular de‐sludging of sedimentation tank/s to suitable area onsite, if available (cost
      minimisation).




 ADG1304.21 Dewatering Management Plan_Rev1.1_17.12.24                                                 Page 11