OPW052025 Report - Part 2

                                                  Approx. site




                                                                 (Kin Kin Beds)

                                                          Example basalt caps




                             Text Figure 8: Extract of Gympie Surface Geology Map

Across the majority of the driveway, soil exposures were minimal, however at the edges some pale red
brown, pale brown and pale yellow brown silty clays were noted. These are generally consistent with the
residual soils associated with the Kin Kin Beds. In the batter scrape above the sidelong section of
driveway, highly weathered, very low strength phyllite was exposed. A view of this material is presented
below in Text Figure 9.




        Text Figure 9: View of weathered phyllite in cutting adjacent to sidelong section of track

There was a change in soil conditions at a slight steepening on the final approach to the house site (Ref.
Text Figure 6 above). Over the steeper section and ground above, soils tended to be dark red brown silty
clays (which are more analogous with weathered basalt), with those below being pale brown grey to pale
yellow brown silty clays (generally consistent with the Kin Kin Beds). Test pit TP3 was present at the break


Geotechnical Investigation & Slope Stability Assessment
9 April 2025 | 25050-001-Rev0                                                                              8