06/0823 - Applicant's Response to Information Request including Attachments [As Published] · 132006.823

57. An estimate of volumes of earth to be removed for each building or roadway should also be
provided in tabular format. This table could have a comparison to the CAS earthworks
requirements. It is recommended an indication of staging of earthworks also be given in this
tabular format.

57. Due to the conceptual nature of a Material Change of Use of Premises application, the
request for volumes of earth to be removed for each building and roadway is considered
excessive. This information will be submitted as part of the Operational Works application to
Council.

However, it can be confirmed that the volume of earthwork proposed for the current proposal,
is significantly less than that proposed for the CAS. Due to the lightweight construction of the
Villa units and reduction in basement excavation, it is anticipated that no fill will be required to
the brought onto, or removed from the subject site. Instead preliminary earthwork
investigations reveal that the proposed levels of cut and fill across the site will enable earth to
be ‘pushed around’.

With regard to Council’s request for a indication of Earthworks staging, it is confirmed that the
development will be undertaken in four stages:

1. Excavation for underground services;

2. Cut and fill for building platforms;

3. Cut and fill for roadways; and

4. Excavation for building foundations.
The regime to control this work will be as was recently successful on the site stabilisation
work. The applicant's on-site representative will hold a weekly review meeting with Council
Officers and will then instruct the Contractor on any issues that the Council has raised.

58. Please detail any risks associated with slip across the subject site.

58. Previous investigations of the subject site by Golder Associates found that there is a Low
Risk of instability across existing natural slopes.

 

During earthworks for the CAS Central Facilities basement, instability was encountered within
steep cuttings (ie. man-made slopes) greater than 3 m deep that intersected clays of low
strength. These cuttings were located in areas of deeper soil across the flatter parts of the
subject site. Although there is a High Risk of instability associated with uncontrolled
earthworks in this area, the level of risk will be reduced to an acceptable level to enable the
proposed development, subject to the implementation of engineering measures as outlined in
Section 6.0 of Golder Associates report titled Geotechnical Investigation, Viridian Noosa,
Stage 3, Noosa Heads Queenstand.

A copy of this report can be provided upon request.

Stormwater Management

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