Part C - Attachments E to G

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NOOSA COUNCIL IDAS Development Application Decision Notice 26

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Vila

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The applicant is to install water quality control devices generally in accordance with the approved
Stormwater Management Plan. Detailed staging plans and specifications, based on and generally in
accordance with the Plan are to be prepared and submitted (after consultation with officers of the
Council) with the relevant applications for operational works.

All easements required on downstream properties draining the site either by way of underground
drainage or overland flowpaths shall be obtained.

A suitably qualified Registered Professional Engineer, specialising in hydraulics shall prepare
engineering drawings and specifications for stormwater designs and shall be submitted in conjunction
with an application for a development permit for operational works (stormwater drainage).

Stormwater is to be disposed of on site so as to cause no scour or damage to adjoining properties.

The stormwater discharge from the site shall be designed such that there is no net increase in the rate
of discharge as a result of the development for storm events up to 100 year ARI.

Stormwater drainage shall include measures to protect proposed allotments from run-off from or to
surrounding land. The design shall also address controls for gross pollutants, nutrient runoff, oil and
grease, and silt and sediment.

Underground stormwater systems shall be designed in accordance with Noosa Council's Engineering
Design Standards, and shall be connected, where possible to Council's existing drainage systems.

An easement of minimum width 4.0 metres shall be granted in favour of the appropriate party over any
Council maintained stormwater pipes that traverse private property.

Designs that concentrate stormwater onto adjoining land shall require separate formal approval from
the owner of the land or relevant Govemment Authority. Such approval shall be submitted with the
design in conjunction with an application for a development permit for operational works (stormwater
drainage).

The design plans detailing surface levels, which shall be controlled across the site of the development
to create as major storm event.overland flow path system to cater for the 1:100 year design storm,
shall be submitted in conjunction with a development permit for operational works (stormwater
drainage). Any overland flow from external catchments shall be accepted and incorporated in the
major event surface flow drainage system through the site. Overland flows shall be discharged in a
safe manner and the product of velocity time depth shall not exceed 0.4 m2/sec.

All site drainage shall be by means of gravity systems.

Drainage works are to be progressively undertaken in conjunction with development of the site
generally in accordance with the approved Stormwater Management Plan. Detailed drainage plans
and specifications, based on and generally in accordance with the approved Drainage Plan, the EMP
and these Conditions, are to be prepared and submitted (after consultation with officers of the Council)
with the relevant applications for operational works.

All drainage works as required by the Stormwater Management Plan are to be provided by the
applicant at its cost.

Deleted.

A minimum floor level freeboard of 0.3m shall be provided for business, commercial and storage areas
above the top water level of the stormwater overland flows.

Earthworks

Any excavation or filling works proposed behind the showroom development on the Eenie Creek Road
frontage is not to occur within the 10 metre OS3 area (with the exception of the 5 metre length of
service roadway at the western end of building D) to ensure the protection of the existing vegetation
within this area, with the exception of the works required to provide the pedestrian and cycleways
beneath Eenie Creek Road and Walter Hay Drive and where filling is required at the eastern end of
the showroom development to allow for the construction of Walter Hay Drive. The rehabilitation of the

OS3 area is to be addressed in the Site Rehabilitation Plan to the reasonable satisfaction of the :

Manager - Land Use.

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