Response to Info Request - Attachment 5 - Geotechnical Report MCU18-0015 & RAL18-0001 · MCU18/0015

J000635-002-R-Rev1                                                                                November 2018


      Item                     Information Required                                    Response
                                                                      associated recommendations regarding
                                                                      stabilisation of the site.

2.0      PROPOSED DEVELOPMENT
The current development layout comprises townhouses and an access driveway on Lot 1, and developments
on Lots 2 and 3, as shown on the attached Figure 1. The remainder of the site is dedicated open space.

3.0      SITE DESCRIPTION
The site (Lot 276 on RP 89506) covers about 1.8 hectares; and has frontage to Attunga Heights to the south
and is surrounded by residential development to the north, south and west.
The majority of the site comprises a sloping sand dune with an easterly to north-easterly aspect. A
meandering creek (tributary to Weyba Creek) runs south-to-north along the eastern boundary.
Ground slopes vary between about 20º to 27º, with steeper slopes of up to 40º to 45º adjacent to the creek
banks. Bedrock and boulders are exposed in the creek in some areas, along with colluvium
(cobbles/boulders in clay matrix)
At the time of our investigation, a two-storey residential dwelling with ancillary structures occupied the
southern part of the site. A concrete walkway is located along the western boundary of the site. The
remainder of the site was densely vegetated with medium to large shrubs and trees.
General ground surface contours and slope angles are shown on the attached Figure 1.
Photographs 1 and 2 show the general site conditions at the time of our investigation.




Photograph 1: Site conditions at the time of our investigation, looking approximately north from the existing
residence in the southern part of the site.




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