Geotech Inestigation · MCU22/0192

FINDINGS

All the field information and test results collected during our site investigation and
detailed in this report, including any site plans, log and data sheets together form the
basis of our recommendations.

The soil profile encountered during our investigations, and as reported, was
reasonably and acceptably consistent across the proposed development, and within
our expectations from regional experience and correlation with The Qld Dept of
Mines/Energy Geology Sheet 9445/1999 (Gympie). The Qld Dept Mines/Energy
Geology Sheet 9445/1999 describes the geology as Early-Middle Triassic, Kin Kin
Beds, arenite, argillite or phyllite.

The susceptibility to flooding from groundwater is low and site drainage was recorded
as poor. No water table was encountered on the day of our site investigation.
However, during and for some time after periods of seasonal, heavy or extended
rainfall water seepage on the sand/clay interface may cause a loss of bearing capacity
at this level. Seepage may also cause collapse of excavations, which may increase
concrete volumes significantly above those normally anticipated.

Cobbles and/or boulders in soil profiles are sometimes common and unfortunately we
cannot predict their size or frequency. It has also been our experience that these
floaters can be extremely difficult to excavate with conventional equipment.
However, experience in this area has shown that beneath any floaters the soil grades
into stable weathered rock at relatively shallow depths.

Moderately weathered excavatable rock was encountered at, and is expected at,
relatively shallow depths across the proposed site.

Cabin 4 (existing dwelling)

The proposed site for Cabin 1 is on a partially exposed 0-3% eastern slope with
neighbouring vegetation consisting of grasses and trees. We recorded a few
shrubs/small trees within, or adjacent to, the proposed cabin site that are likely to be
removed. Slope configuration across the proposed site is determined to be linear
planar. The landform was recorded as natural and partially disturbed.

Cabins 1,2 &3

The proposed site for Cabins 2, 3 & 4 are on an exposed 15-30% northwestern slope
with neighbouring vegetation consisting of grasses. Slope configuration across the
proposed site is determined to be waxing planar. The landform was recorded as
natural and partially disturbed.

The resistance of the soil encountered was tested with an approved 9kg Dynamic
Cone Penetrometer and the results recorded at the appropriate levels on the attached
log sections.

 

Unearthed Geotechnical P/L. 3 Site Investigation Report 022-164