Noise and Air Quality Impact Assessment W D Milligan 31 July 2014

                                                                 MWA Environmental




   The centre coordinates for the model grid were Latitude -26o27’30” and Longitude
   152o51’, representing the central location of the site.

   The following nested model grids were applied to the TAPM modelling:

          50 x 30km grid (total area 1500km x 1500km)
          50 x 10km grid (total area 500km x 500km)
          50 x 3km grid (total area 150km x 150km)
          50 x 1km grid (total area 50km x 50km)
          50 x 300m grid (total area 15km x 15km)


   The 300m grid is considered to provide sufficient resolution of the terrain, land
   use and soil types at the locality.

   Twenty-five vertical grid levels were modelled.

   The TAPM model was setup to generate a site-specific meteorological data file
   for the locality, based upon synoptic analysis data for the representative Year
   2008, as provided by CSIRO.

   The TAPM output was processed using the CALTAPM software to produce a 3-
   dimensional data file suitable for input to the diagnostic CALMET model as an
   ‘initial guess field’. The CALMET model further resolved the prognostic
   meteorology to a finer terrain, land use and soil type resolution of 100 metres
   over a 10 x 10 km area covering the subject site and surrounding region for the
   purpose of dispersion modelling.

   Analysis of the CALMET derived meteorology for the site including a wind rose,
   wind frequency graph, monthly average temperatures graph and tabulated
   stability class analysis is contained in Attachment 6.



   3.3.2 GEOPHYSICAL DATA

   Topographic input data to the CALMET/CALPUFF model was derived from 3 arc-
   second NASA Shuttle Radar Topography Mission (SRTM) digital elevation data.
   The digital elevation data was used to develop a 100 metre terrain grid for input
   to the model.

   A 100 metre grid spacing land use dataset was generated for input to the
   CALMET/CALPUFF model utilising the TAPM database with refinement based
   upon review of aerial photography of the site and surrounds to delineate forested
   land and cleared areas.




Ridgewood 12-002                         16                             31 July 2014