2015-11-10 Planning & Organisation Committee Agenda

PLANNING & ORGANISATION COMMITTEE MEETING AGENDA                             10 NOVEMBER 2015


Odour Impacts on 185 Top Forestry Road
The applicant provides detailed modelling of odour impacts to 185 Top Forestry Road. The odour
modelling did not previously include this house as a sensitive receptor. There is an existing
house on this property and owners have lodged a letter of objection against the application (refer
Figure 2).

The detailed modelling shows the QLD odour guideline requirements will be met for this house,
and is outside the 2.5 Odour Unit contour (2.47 Odour Units).

Requirement for an onsite weather station
A recent submission includes a peer review by Katestone Environmental of the odour modelling.
The review finds that odour modelling has been undertaken in accordance with current regulatory
practice. However, onsite meteorological data could be assimilated into the meteorological
component of the model to ensure its accuracy.

On the 22 October 2015, the applicant’s environmental consultant (MWA Environmental)
responded to the submission providing results of an onsite weather station. The station was
located on the ridgeline originally for baseline wind data for dust monitoring. The station was then
left on the site for nearly 12 months.

While there are some limitations with the use of this wind speed data (as a result of the station
being located at 1.8m above the ground compared to 10m in accordance with AS2923), MWA
Environmental consider the station can be used as a basis for validating the meteorological
component of the odour model predictions for wind.

Taking account of the variations in weather station heights, MWA Environmental conclude that
the model and observed wind directions correlate well and capture the key seasonal
characteristics and directions, with the observed data considered to validate acceptable
performance of the odour model. Council’s environmental consultant (Pacific Environment)
agrees with these conclusions.
3.2. Assessment against Council’s previous resolution
A detailed assessment against Council’s previous resolution requesting further information is
included below.

A. Identify measures to mitigate dust nuisance for residents living along Top Forestry
   Road and minimise road maintenance requirements such as sealing Top Forestry
   Road;

The applicant seeks to enter into an Infrastructure Agreement with Council for the sealing and
widening of Top Forestry Road, at their expense. The sealing of the road will mitigate dust
nuisance from trucks and minimises maintenance requirements for Council.

The Infrastructure Agreement requires a minimum overall pavement depth of 200mm, which is
likely to result in a design life of more than 20 years. Council’s Civil Operations Manager
indicates that if the road was to remain unsealed, there would be an increased maintenance cost
to Council for grading & resheeting due to gravel loss under the traffic loads.

B. Confirm whether an alternative haul route can be used that does not include the
   residential streets of Cooroy (Maple Street and Crystal Street) and is suitable for heavy
   vehicles;

The preferred haul route for poultry vehicles is to/from the Bruce Highway via Top Forestry Road,
Old Ceylon Road, Cooroy-Belli Creek Road, Maple Street, Crystal Street and Myall Street. The
applicant’s traffic engineer reviewed two alternative haul routes included within Figure 3 as the
‘Old Ceylon route’ and the ‘Skyring Creek route’.

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