2021-11-15 General Committee Meeting Agenda

GENERAL COMMITTEE MEETING AGENDA                                                   15 NOVEMBER 2021



    Community comments                                  Proposed response
    range of 2.1 and 2.7, not the 10m that has been     changes, and further localised studies of sand
    applied to the modelling.                           dynamics and sand volumes.
    The short term erosion component is wrong,          The methodology for mapping the erosion prone
    using the 1 in 100-year estimates for both surge    area is set by the State Government and will still
    tide and wave height, despite the recognition       need to be adhered to in any updates to the State
    that the combination was "rare" - resulting in a    erosion prone area mapping.
    significant overstatement of the area actually at
                                                        The CHAP and the coastal hazard mapping will
    risk of erosion.
                                                        continue to be updated over time as new local
    Clear disclaimers needed for coastal hazard         information, technology and modelling methods
    mapping on Council’s interactive mapping            are made available. This includes the State’s
    system, noting the range of inputs and              erosion prone area mapping and the inundation
    uncertainty inherent in the modelling.              mapping layers.
    Given that enhancing dune vegetation is             Additional disclaimers were added to the CHAP
    accepted as the best option for managing            as a result of community feedback to clarify the
    erosion risk, the existence of significant          purpose of the maps. These disclaimers will be
    vegetation all along the Eastern Beaches should     expanded upon for the online mapping to more
    properly be taken into account when determining     clearly explain the various data inputs into the
    the area actually at risk.                          modelling. These disclaimers will be included on
                                                        the interactive mapping as clear ‘pop up’ notices
    Council has made no allowance for the sand
                                                        for readers.
    trapping role of the Sunshine Beach headland.
    Council should commit to further localised
    studies that accurately measure and monitor the
    nature and extent of erosion prone areas.
    Need further modelling to better understand the
    potential outcomes from best case to worst case
    scenarios (low, medium, high) so we can
    understand the risk envelope we are looking at
    for 2040, 2070 and 2100.
    Object to use of RCP8.5 global emissions
    scenario for climate change as it presents a
    ‘worse-case scenario’. Should use more
    updated IPCC or preferably CSIRO data and
    where possible Queensland data e.g.
    Mooloolaba, Noosa, Rosslyn Bay and Cape
    Ferguson. There is such a wide range of
    forecast sea level rises around the world that it
    almost becomes meaningless in some respects
    if we do not start using local data sets.
    Any attempt to derive justification for planning
    changes from erroneous modelling would be
    unreasonable, irrational and unwise.

    Support the enhanced emphasis in the revised        Agree that local monitoring is a critical adaptation
    CHAP on a flexible adaptation pathway               response to better understand localised changes
    approach that includes local monitoring of the      including sand transport processes, sand
    dunes and beaches and the gathering of factual,     volumes, beach profiles, vegetation changes and
    empirical data over time to inform future           tide levels. Local monitoring is a key priority for
    modelling and assessments and subsequent            the CHAP implementation.
    updating of the CHAP.
                                                        Council will work with Federal and State agencies,
    This modelling data also needs to be made           research institutions and other coastal experts to
    available to the community.                         ensure the data is publicly accessible where
                                                        possible so that the community can also make
                                                        use of the information if they wish.



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