Attachment 5 - Geotechnical Assessment · MCU18/0015

RTI 11/055 Folio B386

 

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November 2003 -2- 03632248-001

 

The meanders of the creek have created two clay soil ‘islands’ that are defined along their
eastern edges by the fenced site boundary of the Viridian site. These areas have a westerly to
north-westerly aspect, with ground slopes ranging from about 5° up to 35° adjacent to the
creek. Boulders of diorite up to about 1500 mm across occur across the surface of these parts
of the site.

Vegetation across the sand dune comprises a scattered to dense cover of saplings and mature
trees with a light undergrowth, as shown on Photograph 1. The clay slopes mostly have a
dense cover of small trees and weedy undergrowth.

At the time of investigation, there was an existing house together with ancillary structures in
the southern part of the site, accessed by a driveway from Attunga Heights. A concrete public
walkway is located just outside of the western site boundary.

3.0 PROPOSED DEVELOPMENT

Drawings prepared by JMA Architects show the proposed. development» layout, including
sections and elevations of the proposed buildings (refi Drawing Nos)978 DA0000 to 3003,
Revision B).

Our understanding is that the project involves construction of the following:

e Lodge — three Jevel building (basement, ground and first floors) comprising masonry and
light-weight walls, ground level slabs and suspended timber floors with a metal deck roof.
Cuts up to about 2 m depth are proposed together with minor filling. Two lifts will be
constructed close to the Entry Court,

* Group Housing = 15 individual three level cabins (ground, first and loft floors)
comprising mostly light-weight construction with ground level slabs and suspended
timber floors. Cuts up\to about 6 m depth are proposed in the vicinity of Cabins 3B,
4A/B, 5A/B and 6B for a car parking level. Elsewhere, cuts will be less than 2 m depth
and fill will be supported by retaining structures.

In general, the proposed buildings will be suspended above the natural ground slopes and
proposed cut platforms.

We also understand there will be a driveway from Attunga Heights providing vehicle access
to garages on the ground floor of the Lodge. Two driveways will provide access to the cabins
from proposed ‘stub’ roads located within the Viridian site to the east, with timber bridges at

parking area.

Golder Associates