PM Submission - Julia Walkden - MCU25/0118

                Dianella Court, located downhill from the site, has a long history of stormwater
                overflow from 64 Lake Macdonald Drive, as captured in multiple videos over recent
                years. Several downstream locations already flood during heavy or sustained rainfall.

                Deficiencies in the applicant’s stormwater proposal

                The Town Planning Report states that the development will rely on:

                     •    a future stormwater pit provided by other subdivision works, and
                     •    off-site water-quality treatment via an external bioretention basin
                     •    an indicative on-site detention tank, to be designed later

                This approach is unsuitable because:

                     •    The design is incomplete and deferred.
                     •    On-site treatment has already proven inadequate, with temporary basins
                          overtopping during recent storms.
                     •    No on-site water quality treatment is provided.
                     •    No slope-stability hydrology or contamination-specific stormwater assessment
                          is included.

                This is not an acceptable stormwater strategy for a steep, constrained,
                environmentally sensitive site.

                6. Council Cannot Approve Residential Use Until Suitability Is Proven

                Under EP Act ss 375–385, contaminated land must be demonstrated to
                be “suitable for use” before approving any sensitive land use, such as housing.

                To date:

                     •    Remediation is incomplete.
                     •    No independent validation report has been provided.
                     •    No “suitability for use” certification has been issued.

                Approving the MCU prior to confirmed site suitability would be inconsistent with:

                     •    the Environmental Protection Act, and
                     •    the Planning Regulation.

                This must be resolved before further assessment proceeds.

                I respectfully request that Noosa Council refuse Development Application
                MCU25/0118 for 64 Lake Macdonald Drive, Cooroy.


                Julia Walkden
                24 November 2025




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Document Set ID: 24330845
Version: 1, Version Date: 24/11/2025