Delegated Report - Code - Planning OPW23 0179 · OPW23/0179

                      a.      a Council inspection reveals works do not comply with approval requirements
                      b.      submitted certification falsely states works comply with approval requirements.
               5.     REFERENCE DOCUMENTS

                      The following plans require amendment.

                           Plan No.           Rev.    Plan/Document Name                            Date

                           ADG1535.23         0       Dewatering Management Plan                    31.05.2023

                           Amendments         Prior to the Prestart Meeting, submit and have approved by Council
                                              an amended Dewatering and Acid Sulfate Management Plan. The
                                              document is to be prepared and certified by a suitably qualified
                                              Registered Professional Engineer Queensland (RPEQ) and
                                              demonstrate how Acid Sulfate affected water encountered during
                                              excavation will be treated and disposed of. The following specific
                                              amendments are to be included:
                                              1. The DMP states that the shoring design is provided in Appendix
                                                 C – however only the civil engineering plans are provided.
                                                 Include plans which show the location and type of temporary
                                                 shoring, groundwater spears, treatment and monitoring
                                                 equipment location and space requirements. Why do the
                                                 structural engineering plans (provided separately) only show
                                                 shoring on 3 sides of the excavation? The type of CFA piling
                                                 (contiguous or secant) should also be stated on plan.
                                              2. Remove references to ‘steel sheet piling’ on page 10 and refer to
                                                 CFA secant piling. Please note that the references should reflect
                                                 the proposed method or the alternate method chosen by the civil
                                                 engineer.
                                              3. Update section 6.5.2 and 6.5.3 (Water Quality Monitoring) to
                                                 include continuous monitoring of pH and dissolved oxygen at the
                                                 release point from the treatment system. Total iron and
                                                 aluminium are to be sampled where identified in the document
                                                 as ‘if required’.
                                              4. Update the figure in Appendix A to also show the stormwater
                                                 network and specifically the stormwater pit which the dewatering
                                                 system will discharge into and the outlet headwall.
                                              5. Update section 6.4.3 to identify that discharge is to the
                                                 stormwater network prior to entering the canal system.
                                              6. There seems to be plenty of room in the frontage of the site for
                                                 establishing a groundwater monitoring bore outside of the
                                                 excavation and shoring system in which to monitoring
                                                 groundwater drawdown and quality. Update the monitoring
                                                 section of the DMP to incorporate such a monitoring location.
                                              7. Section 7 (Noise) is to be updated to refer to the default noise
                                                 standard for pumps in Section 440T of the EPA Act. The EEP
                                                 (Noise) objectives currently referenced are long-term objectives
                                                 rather than a specific enforceable standard.
                                              8. Provide dilapidation reports for neighbouring properties and any
                                                 other structures or infrastructure identified as being within the
                                                 estimated cone of depression associated with the groundwater
                                                 drawdown.
                                              Note: Refer to the Acid Sulfate Soils Overlay Code and PSP8 –
                                              Natural Hazards for guidance on Acid Sulfate Soils requirements.


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Document Set ID: 22860610
Version: 5, Version Date: 05/04/2024