Slope Stability Report 26-5-2019 OPW19-0193

TRUBUILT
SLOPE RISK ASSESSMENT REPORT



      •   In general, the site drains through a catchment of a creek that drains to the east, the general pattern
          of drainage is dendritic;
      •   Near the proposed house, surface drainage is via overland flow to the creeks located to the south-
          east and south-west.

Key site drainage features are shown on the site plans in Appendix 1.


2.8        Vegetation

The vegetation present on the site comprises:

      •   The site comprises a combination of regrowth trees, some regrowth undergrowth, introduced trees
          and weeds, trees appear to reach a maximum height of 30m to 35m;
      •   Around the proposed house the site is mainly clumpy long grass with shorter grass underlay with
          various weeds;
      •   A clump of bracken ferns occurs between HA1 and HA2 on the slope, this appears to form a contour
          along the slope, there are some scattered ferns for about 10m below this patch;
      •   The gullies on either side of the proposed house comprise pioneer tree species with predominantly
          lantana under growth;
      •   There is a stand of a tall grass to a height of about 2.5m adjacent to the roadway.

Key details of the site vegetation are shown on the site plan in Appendix 1.


2.9        Buildings and Other Structures

The following is a description of the number, type and condition of buildings or other structures currently
present on the site:

      •   There are a couple of scattered farm buildings near the main creek ;
      •   An existing residence constructed from a transportable building with some sheds and water tanks are
          located on a cut/fill platform down slope from the proposed house;
      •   An existing driveway constructed using cut/fill methods is located from Ewarts Road to the existing
          dwelling.

The position of key buildings or other structures are shown on the site plans in Appendix 1.


2.10       Other Observations

The following site observations are relevant to the investigation:

      •   It is noted that cleared gullies on properties surrounding the site had tension cracks and hummocky
          ground associated with landslip features. Some of these features are identified on DWG-01 and in



LEONTAKIANAKOS-R-001                                 Page 6                                            26 May 2019