Slope Stability Report 26-5-2019 OPW19-0193

TRUBUILT
SLOPE RISK ASSESSMENT REPORT




1.         INTRODUCTION

This report presents the results of a field mapping and slope risk assessment undertaken on 91 Ewarts Road,
Cooran on behalf of Trubuilt. The work was undertaken to the scope of works and the terms and conditions
contained within the GA Geotechnical’s Engineering Services Agreement with Trubuilt.

This investigation is and risk assessment is undertaken to the requirements of AS1726-2017, AGS2007 and the
geotechnical site investigation requirements of Noosa Shire Council. Noosa Shire Council online mapping
application shows that the site falls within the Landslide Risk overlay map on the Noosa Shire Natural Hazard
Overlay Map.

Trubuilt has supplied the following documents for this investigation:

      •   Site plan and sections for the proposed development.

Note that due to the site of the site, the investigation and findings of this report are limited to the area
enclosed within the red rectangle shown on DWG-01.


1.1        Details of the Proposed Development

The proposed development shall comprise a timber pole home with minor cut and fill earthworks.


1.2        Site Location and Description

The site is located at Lot 61 M371155, 91 Ewarts Road, Cooran. The site comprises an approximately
rectangular rural lot that is about 645,983m2.

The site encompasses several east-west trending, steep sided valleys. The proposed development is limited to
a small area in the north-east corner of the site.


1.3        Method and Scope of Investigation

In order to address the requirements of the Noosa Shire Council planning scheme with respect to
developments on steep or landslide prone land the following investigation methodology was utilised:

      •   Three hand auger boreholes to a maximum depth of 1.9m bgl to provide further information on the
          subsurface conditions of the site, DCP testing was undertaken adjacent to each borehole;
      •   Site walkover and mapping of key site features, geological outcrops, geomorphology and evidence of
          land instability and/or erosion;




LEONTAKIANAKOS-R-001                                 Page 1                                              26 May 2019