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3.0 SOILS AND GEOLOGY
Topography

The topography of the site is Undulating, varying between 2 and 28m above sea level. There is
a fall of between 9 and 13 metres from the western (Maximillian Road) boundary to the
heathland/sedgeland areas located to the north of the centre of the site. A ridge line runs from
the southem central area of the site in a north east direction to the site boundary.

Geotechnical Drilling

Eight (8) shallow geotechnical test holes (BHi to BH8) were. drilled on the southern portion of
the site as shown in Figure 1. The geological logs of these test holes are provided in Appendix
A. Dynamic cone penetrometer testing was undertaken during the drilling of all holes. A
number of undisturbed (Uso) samples and disturbed samples from the bores were retained and
submitted to the Coffey (Nathan) laboratory for shrink / sweil testing, atterberg limits testing and
moisture content analysis. This information will be necessary for determination. of structural
requirements for buildings on the land.

Geotechnical Testing ‘.

Table 2.1 lists geotechnical testing undertaken on soil samples from the drilling of eight (8) test
borehoies to characterise subsurface conditions on the southern portion of the site. Coffey
laboratory reports for this testing are provided in Appendix B.

Tabie-2.1 : Laboratory Geotechnical Testing of Soil Samples

BHi 1.0 - Uso Tube Yes
BH2 1.0 Uso Tube

BH2 1.5 . Disturbed Yes Yes
BH3 0.6 : Disturbed Yes Yes

BH3 4.0 Us. Tube Yes Yes
BH4 1.0 4.3 Uso Tube
BH6 0.8 1.0 Disturbed Yes Yes
BH6 1.2 1.5 Disturbed Yes Yes
BH7 1.0 1.45 Uso Tube
BH8 0.7 1.0 Disturbed Yes Yes

 

The geotechnical testing confirmed the soil conditions expected in the area. The typical bore log
soil profile is as follows. eee :

7. Sand — depth range 0-0.8m.
2. Sandy Clay — depth range 0.4m to 1.5m.
3. Sandstone - from 1.0m plus.

The geology of the area will not have an adverse impact on the proposed type of development
and the associated construction methodologies.

 

PETRAC LAND HOLDINGS P/L Noosa North Shore Eco-Tourism Portal September 2003
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