MCU180015 - Submission - Narelle Kearney · MCU18/0015

Table 9.11

9.9 Built form

Sloping sites and ridgelines

   017 Development on sloping sites—
     a) is responsive to the natural topography of the site and minimises cut and fill;
     C) is integrated with the natural site characteristics including vegetation;

Comments: the section plans for the proposed development clearly show an excessive amount of cut into sand
dunes is proposed to terrace the multiple dwelling units. This approach does not integrate with the natural site
characteristics which includes coastal rainforest vegetation. The area allocated in the Attached housing zone is
less constrained topographical and more suitable for multiplied dwelling development through minimising
earthworks.

Division 9 Natural Hazards Overlay Code

   13.30.2 The overall outcomes sought from the Natural Hazards Overlays Code are
     a) development in areas at risk from natural hazards is compatible with the nature of the natural hazard so
     as not to place people. property, economic activity, social wellbeing and the natural environment at risk;
     d) development directly, indirectly and cumulatively avoids a material increase in extent and severity of
     natural hazards and does not significantly increase the potential damage on the site or to other properties:
     f) natural processes and the protective function of landforms and vegetation are maintained in natural
     hazard areas;

Comments: the proposed development is within an area of high landslide risk given some of the slopes from
the western ridgeline amount to 46% in parts. As a result, this part of the site is included in the Open Space
Conservation zone to ensure no sensitive uses occur that pose a threat to people and property. The multiple
dwelling component is proposed within this landslide area thereby creating a risk to people and property that is
completely inconsistent with the extent of the hazard. The proposed development also creates significant risks
to properties across the ridgeline along the western boundary as slope stability will be compromised through
excessive earthworks and vegetation removal. These impacts will adversely alter natural processes such as
existing drainage patterns and habitat loss.

Table 13.8 Landslide hazard areas

13.32 Effects of use

         01 Development is located to ensure it does not compromise the safety of people, property or hazardous
         materials manufactured or stored in bulk by increasing risk of landslide;

           S1.1 The proposed development is not located in a landslide hazard area as indicated on Overlay Maps
           0M1.3-0M9.335; OR
           S1.2 The development site is not subject to landslide, either internal6, or from sloping land above the
           site eq. slopes are less than 1 in 10 (10%)

         02 Development, including access ways is designed and constructed to—
           e) minimise impacts on the natural landform;
           b) minimise risk to people and property from landslide;
           C) avoid any potential instability and associated problems, including long term stability of the site and
           long term stability of the development

Comments: the multiple dwelling component is wholly located within the landslide hazard area on overlay map
0M6.3 and, is by definition from this mapping, exposed to landslide risk. The proposed engineering solution to

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