RFI - Att 1 - Slope Stablility Assessement

2.3      Groundwater
No signs of groundwater seepage at the surface (‘springs’) were observed during our walk-over around
the site. Groundwater seepage may develop following periods of prolonged or heavy rainfall and would
tend to proliferate in the upper topsoil materials.

2.4      Surface Drainage
The proposed dams have a relatively large catchment, extending up to about 200 m (above Dams 05 to
08) into the south-western corner of the property. Overflow from the dams has been designed to follow
the natural drainage line, with overflow from Dam 01 at the end of the chain to be directed into a rock-
lined spillway which will direct runoff into a creek in the north-eastern corner of the site. Other than
relatively minor surface rilling of bare soils from recent rainfall prior to our site visit (Ref. Text Figure 8
above), no evidence of significantly eroded soil was noted during our walk-over survey.

2.5      Vegetation
The dam sites were mostly surrounded by grassed paddocks with some large mature trees, particularly a
row of pine trees to the eastern side of proposed Dams 05 to 08. The trees displayed no signs of
distortion that could be attributed to slope instability (e.g. tilting, leaning etc.).

2.6      Buildings and Other Structures
The existing earthworks and rock filling around Dams 01 to 04, although relatively recently completed,
displayed no signs of slope instability. Embankment crests between individual dams were relatively wide,
with no evidence of settlement or tension cracking. None of the existing buildings on the ridge area to
the east displayed signs of distress or distortion that could be attributed to slope instability.




18 March 2026
25029-002-Rev0                                                                                          8 of 12