Geotech Report Reference Document OPW19-0239 · OPW19/0239

Gympie Terrace Noosaville Pty Ltd




Photograph 1: Site conditions at the time of fieldwork, looking south west from borehole BH1.


4.0      METHOD OF INVESTIGATION
  4.1 Review of available information
To assess likely ground conditions a review of published geological maps, acid sulfate soils maps and
available geotechnical information was undertaken (refer Section 5.1).

  4.2 Fieldwork
Fieldwork was conducted on 14 November 2018 in the presence of an engineering geologist from Core.
Four boreholes (designated BH1 to BH4) were drilled across the proposed development footprint at the
locations shown in Figure 1. The boreholes were drilled to depths of between 9 m and 10 m BGL using a
trailer-mounted auger drill rig.
Dynamic cone penetrometer (DCP) testing was undertaken adjacent to and within the boreholes to assess
the consistency/density of the soils. Soil samples were recovered from the boreholes for subsequent
laboratory testing (refer Section 4.3).
A standpipe was installed in borehole BH1 to 2.3 m depth for groundwater monitoring. Details of the
standpipe construction are shown on the borehole report in Appendix A.
Borehole positions were recorded in the field using a handheld GPS unit. Surface elevations were inferred
from the provided survey information (refer Murray & Associates Job No. 61915 DTM).
Reports of Boreholes are attached in Appendix A, together with explanatory notes. Subsurface conditions
are discussed in Section 5.2.
4.3 Geotechnical Laboratory Testing
Geotechnical laboratory classification testing was performed at the NATA accredited laboratory of Geotech
(S.C.) Pty Ltd and comprised Atterberg limits tests. Soil aggressivity testing was undertaken by Eurofins
MGT.
Laboratory results are summarised in Table 1, and laboratory test certificates are attached in Appendix B.




J000799-002-R-Rev0                                                                                Page 2