2015-11-10 Planning & Organisation Committee Agenda

PLANNING & ORGANISATION COMMITTEE MEETING AGENDA                           10 NOVEMBER 2015



Issues                                        Comments
Odour Concerns
The detailed odour modelling fails to       The applicant seeks to enter into an Infrastructure
include five sensitive receptors within the Agreement with Council for a restrictive odour
2.5 Odour Unit contour. One of these (the   covenant for the adjoining properties that the
dwelling at 185 Top Forestry Road) is not   applicant owns within the 2.5 odour unit contour.
owned by the applicant and is very close    Detailed modelling confirms Council consultant’s
to the contour.                             previous advice that the sensitive receptor at 185
                                            Top Forestry Rd is outside the 2.5 odour unit
                                            contour.
Odour Modelling Deficiencies                Council’s environmental consultant has reviewed
 Insufficient odour modelling of all all of the assumptions, criteria and meteorological
    emission sources.                       data built into the odour modelling and consider
 Does not show the 20, 10 and 5ou them to be appropriate for the proposed location of
    contours.                               the potential odour sources.
 The results are derived from a model
    based on vertical stack emission
    dispersion rather than poultry shed
    horizontal dispersion.
 The modelling assumes a ‘best-
    practice’ K factor of 2.2, although the
    development’s location and shed siting
    and orientation do not demonstrate
    industry ‘best practice’.
The modelling did not use site-specific The applicant’s environmental consultant (MWA
weather and topographic data. There is no Environmental) provided results of an onsite
known observed meteorological data to weather station. There are some limitations with
enable validation of the modelled the use of this wind speed data, however consider
meteorology. Given the complexity of the the station can be used as a basis for validating
terrain, it is recommended that a odour model predictions for wind.
meteorological station be installed on-site
to allow an evaluation of the modelled MWA Environmental conclude that the model and
meteorology.                                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.
The development site is located in a Council’s environmental consultant indicates that
valley, where inversions occur throughout inversions are included in the odour modelling,
the year. Since inversions are known to and are referred to as the ‘mixing height’. The
concentrate emissions, change dispersion meteorological model CALMET calculates them for
patterns, and suppress and delay the subject site for every hour of the year.
dispersion.

Traffic Concerns
Noise along haul route will affect amenity.   Noise associated with trucks using the haul route
                                              during regular sleeping hours is likely to adversely
                                              impact the amenity of nearby residents. A
                                              condition is recommended for heavy vehicle
                                              movements along the haul route are limited to
                                              between the hours of 6am until 7pm, 7 days per
                                              week.


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