Annex 11 - Code 11 - Marine Plants

  Performance outcomes                                  Acceptable outcomes   Response
  3. provides an offset if, after demonstrating all                               •    Noosa River Declared Fish Habitat (Management
     reasonable avoidance, minimisation and                                            type A) Area
     mitigation measures are undertaken, the
                                                                              High Ecological Value (HEV) Waters (wetland) / High
     development results in an acceptable significant                         Ecological Significance (HES) Wetlands
     residual impact on a matter of state
     environmental significance.                                              The oyster ecosystem restoration works are designed to
                                                                              enhance the values of the wetland by restoring a complex
                                                                              ecosystem to what is currently a degraded aquatic
  Statutory note: For Brisbane core port land, an                             environment.
  offset may only be applied to development on                                Mangroves and seagrasses are not recorded within the
  land identified as E1 Conservation/Buffer, E2                               footprint of this project and will not be impacted.
  Open Space or Buffer/Investigation in the
  Brisbane Port LUP precinct plan. For the                                    A small stand of mangroves is shoreward of the proposed
  Brisbane Port LUP, see www.portbris.com.au.                                 restoration footprint at Tewantin. Mangrove areal roots
                                                                              extend into the intertidal zone adjacent to the proposed
                                                                              restoration footprint. Mangrove roots are excluded from the
  Note: For the purpose of this code, the matter of                           restoration footprint at a minimum distance of 2m. Seagrass
  state environmental significance assessed is                                is found upstream and outside of the restoration footprint
  marine plants under the Fisheries Act 1994.                                 and is excluded from the footprint at a minimum distance of
                                                                              10m from the footprint.

  Guidance for determining if the development will                            According to project consultants, ESP, macroalgae growing
  have a significant residual impact on the matter                            on rocks, dominated by Padina sp. is sparse (covering less
  of state environmental significance is provided in                          than 15% of the surface area), with a footprint of less than
  the Significant Residual Impact Guideline,                                  479m2 within the proposed restoration area at Tewantin.
                                                                              The macroalgal assemblages are assessed as being in
  Department of State Development, Infrastructure                             relatively poor condition due to high sediment loads
  and Planning, 2014. Where the significant                                   observed on and around the existing rocky reef and rubble
  residual impact is considered an acceptable                                 areas, with some sections of reef having a high coverage of
  impact on the matter of state environmental                                 fine sediment.
  significance under the Environmental Offsets                                ESP also confirmed that given the speed at which Padina
  framework and an offset is considered                                       can colonise hard surfaces (dead oyster shell) elsewhere in
  appropriate, the offset should be delivered in                              the estuary (ESP 2021), it is anticipated that supplementary
  accordance with the Environmental Offsets Act                               habitat provided as part of the proposed restoration project
  2014.                                                                       would be colonised rapidly within 1 year of deployment, and
                                                                              that coverage would be similar to the current condition
                                                                              within 2 to 3 years post deployment, particularly in sections
                                                                              that particularly in sections that remain subtidal and not
                                                                              covered by fine silt.




State Development Assessment Provisions – version 2.6
State code 11: Removal, destruction or damage of marine plants                                                  Page 20 of 24