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

Land Development

Earthworks

54.

55.

The earthworks for the new proposal shail be less than the CAS as it was evident that the
level of earthworks previously approved was not sustainable due to the impacts caused by
the loss of sediments from the site and the problems encountered with uncovering boulders.
Please provide details of how earthworks will be reduced in the new proposal.

. The amount of disturbance caused by earthworks is made up of works as follows:

a. Excavation for underground services;

b. Cut and fill for building platforms;

c. Cut and fill for roadways; and

d. Excavation for building foundations.
Item a would be expected to be similar to the CAS.

Item b is estimated to be less that the CAS as all the Villas are designed to sit upon the land
as lightweight structures. It is therefore envisaged only minor earthworks to allow access for
excavation of pad footings and incoming services will be carried out to the areas of the
associated with these accommodation types.

The larger apartment buildings have been designed with only one level of carparking below
the units. It is expected that these units will be generally in cut with any excess fill being used
to fill the current excavation under Building | (N).

It is noted that prior to construction commencement the contaminated fill area (estimated at
5000m") will be removed from site. The accommodation buildings in this area are expected
to require only minor cut and fill in the area of the current contaminated soil cell.

Item c is expected to be similar to the CAS.

With regard to Item d, as hillside Villas are expected to site on pad footings and the larger
apartment buildings are expected to be found in piles or pier footings the amount of
excavation is likely to be similar to the CAS.

Therefore considering the work that has recently been completed in stabilising the site and
the new design of all buildings it is expected that disturbance of the site be earthworks will be
less, if not substantially less, than the CAS, which has included substantial excavation for up
to 3 levels of basement carparking.

Preliminary earthwork plans showing the amount of cut and fill across the site are provided as
Attachment 19. It is noted that these plans still reflect the original building design, with
updated plans to be submitted as part of the Operational Works application to Council.

Please provide details of the earthworks for the site. An A3 plan for each cross-section
should be provided showing the amount of cut and fill and clearly showing the existing natural
surface level (N.S.L). It appears in some of the cross-sections provided that the N.S.L being
Shown is not the current stabilised N.S.L on site.

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