Attachment 7C - Flora and Fauna Survey Assessment_Noosa Landfill - Revision 3

                                                                                      Native Foresters



Interim impervious cover will be installed over all cells initially, followed by permanent
capping. Interim impervious cover over the new cells will consist of 300mm of clay with
100mm of top soil and grass cover. Final capping will occur over a 10 year period.

Levels for both cells have been set to enable Cell 2.4 to tie into existing Cell 2.1 leachate
and groundwater collection system. Grading of Cell 2.3 does not allow for a gravity
connection to the existing leachate management system. Leachate from Cell 2.3 will be
pumped to the existing leachate management system. However, the groundwater seepage
drains from Cell 2.3 will connect via gravity into groundwater drainage system.

Both proposed cells require the provision of an access road and stormwater management,
including rock chute drains resulting in substantial earthworks. The access track is proposed
to be 8 metres wide (14 metre carriageway). The access will be located between the eastern
extent of the cells and the pegged extent of vegetation clearing line. During site filling
operations, Cell 2.4 will drain to a sediment basin to the north of the cell. Cell 2.3 will drain
to a sediment basin to the south of the cell. The construction of clean water diversion drain
is also proposed to the south of Cell 2.3. In total, earthworks associated with the access
road and stormwater management are expected to require approximately 12,000m3 of
additional fill, which can be sourced from excavation of the proposed cells.

Current, surface water runoff flows to the east/north-east. Some of this surface flow is
directed north from the southern end of the landfill into a constructed channel before flowing
north-east into the remnant bushland areas. Future proposed surface water flows will be
directed north and south along the landfill boundary before discharging into the remnant
bushland areas. Clearing for the new southern stormwater discharge area will result in the
clearing of up to 6,500 m2 of vegetation.

Construction of Cell 2.4 is estimated to take less than six months to construct. It is expected
that construction of Cell 2.3 will take around nine months depending on the volume of
earthworks undertaken as a result of day cover excavations. However, it is foreseeable,
since Cell 2.3 is a large cell, it may be constructed in (up to) three phases. Around four to
six months is allowed for each construction phase.

A map showing the location of proposed works onsite in relation to existing vegetation types
occurring is shown in Appendix E.




Noosa Landfill & Resource Recovery Centre – Fauna and Flora Assessment – Revision 3                8