Scg 24378(Sl) · MCU16/0046

SCG Consulting Engineers have been commissioned to provide a Slope Stability Assessment for the above
allotment. The assessment considers the existing state of the allotment and any possible effects that the
proposed works will have on this site.

The proposed works are detailed by Chris Clout Design in plans Noosa Dunes Project SP1.0, SD1.0 thru to 8.0
and consists of a proposed two storey dwelling.

SITE DESCRIPTION

A desk top study of the site confirms the following:-

    -   The site is located in an area identified as ‘Sand Dune Problem Area’ on the Noosa Shire Council’s
        Landslip Maps.

    -   Reference to the Australian Geological Map 1:100000 Gympie Special confirms the site is located within
        the Quaternary Sandbed.

    -   Level contours provided on the proposed building plans indicate an average fall across the site of 22%.

Field work has been undertaken which included explorative boreholes by SCG Consulting Engineers, together
with a walkover of the site by SCG Consulting Engineers.

The borehole logs contained in SCG Consulting Engineers report, (No. 24378(S)) confirms the soil profile to
consist of the following –

                              :    LOOSE SILTY SANDS INCREASING IN DENSITY WITH DEPTH

Our walkover confirmed the following characteristics-

   Site Slope                 :    A visual assessment of the surface grades within the allotment using a hand
                                   held inclometer suggests grades in the order of 20-25% exist across the
                                   proposed construction site. The measured grades are consistent with the
                                   contours indicated on the proposed construction.

   Vegetations                :    Vegetation consists of grasses & scattered trees.

   Slope Shape/Location :          The surface profile across the allotments slope faces are generally LINEAR
                                   PLANAR.

   Drainage                   :    The surface drainage is good, sub-surface drainage is good. There was no
                                   indication of ground water seepage or rising water pressure.

                                   Stormwater flows from upslope of the allotment will be intersected and
                                   captured by the road reserve.

   Earthworks                 :    There is no existing earthworks apparent.

   Adjacent Structures        :    Adjacent structures on the neighbouring properties appear to be a mix of slab
                                   on ground and suspended timber framed floors.

   Evidence of previous
   Soil Movements             :    Surface cracks


LANDSLIP MECHANISMS

Landslip is generally defined as the movement of a mass of rock or soil down a slope.

It is generally considered to occur when the strength of the soil or rock mass to support itself is exceeded
causing movement to occur within the mass.




SCG Consulting Engineers                                 2                                  SCG Ref: 24378(SL)