Development Application Part 2 - Environmental & Stormwater Management Plans · OPW11/0335

Matrix Projects (QLD)- Essence of Peregian, David Low Way Peregian Beach QLD 4573       Page 2



3       Observations

3.1     The Site
        The site is known as Lots 8-10 on P9315 and Lot 76 on MCH2969 and is
        located at 215-219 David Low Way, Peregian Beach QLD (as described by the
        Koala Habitat Management Plan by James Warren & Associates, for the site).
        The area specifically addressed in this report is the area of the site impacted by
        development, specifically those shown on the bulk earthworks plans by TOD
        Consulting Engineers (see Appendix A- Bulk Earthworks Plan). The area on
        the western side of the gabion wall (Appendix A) is assumed to have no
        development impacts, for example soil movement or disturbance.

        Site soils weren't assessed during inspection, although casual inspection found
        them to be sandy. Considering the habitat of the surrounding area, available
        soil depth for root growth is limited by the water logged, and/or relatively high
        water table that are preferred by the endemic Melaleuca quinquenervia.

        The area is currently used as a caravan and camping site.

3.2     Approved Development
        The site has been approved for commercial and visitor accommodation
        consisting of 2 buildings with a total of 64 units, and thirty other units, either
        duplex or freestanding.

3.2.1   Building and Earthworks Plan/Tree Impact
        DA condition No 16 addresses retention of trees outside of the approved
        building layout footprint. Given that this affects the majority of trees on the
        site, attention was then focused on the bulk earthworks plan that affects the
        remaining trees outside of building footprints.

        Comparison of the existing contours with the new levels on the bulk
        earthworks plan (TOD Consulting Engineers, Job No 10525, Dwg No C4 and
        C5) found that from the Gabion wall there is an increase of between 300mm
        and 1000mm at the turfed fire trail. The western line of buildings will require
        an 800 to 1300mm increase in soil level over the existing soil levels.

        Increases over the existing soil RL's continue until approximately the 5-metre
        contour, then becomes a cut for the main unit complex in the northeast corner
        of the site. The same occurs for the building in the southeast comer, where the
        bulk earthworks level is 6.20 metres, which will require up to 2800mm of cut.
        This is evidenced by the requirement for sheet piling around the south, east
        and northern side of the building footprint.

        Areas of undisturbed natural ground level are limited to the section inside the
        entrance turnaround, and the area along the southern boundary at the eastern
        end, or eastern side of the entrance to the development, bar impacts from sheet
        piling installation (a required minimum 1200mm from the building footprint).




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Prepared by Samuel Cowie                                                     I I'h of June 2009