ECM_22343520_v1_Geotechnical Investigation · 132000.200173.1

                                            PROPOSED RENOVATIONS
                                            2 ARAKOON CRESCENT, SUNSHINE BEACH




            Text Figure 9: Scour in the southern part of the site (LHS) and bulging coir log (RHS)

            5.0        SLOPE STABILITY ASSESSMENT
            5.1        Existing Conditions
            The Noosa Planning Scheme 2020 includes a landslide hazard overlay map (Ref. extract in Text Figure 10
            below) which indicates that the eastern part of the site is within a Moderate Hazard Area. Beyond the
            eastern boundary the high dune face is mapped as having a Moderate to High hazard.




                                                                                 Subject Site




            Text Figure 10: Extract from Noosa Council landslide hazard overlay mapping

            It should be noted that the Noosa Council landslide hazard map is a broad-scale indication of the potential
            landslide susceptibility and is superseded by this site-specific assessment. The allotment did not exhibit
            any visible surface features which would indicate large scale global slope instability during our walkover:
            no landslide back scarps, noteworthy groundwater seepage or areas of naturally ‘hummocky’ ground were
            observed. Medium dense sands were inferred at relatively shallow depths below surface, with the high
            dune standing at between 28° to 35°; and with a slightly steepened section at the toe having a gradient in
            the order of 40°.




             24 February 2023
             Report No. 22484-001-Rev0                                  9
Document Set ID: 22343520
Version: 1, Version Date: 16/03/2023