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

                                                               MWA Environmental




4.0 DUST IMPACT ASSESSMENT
4.1 DUST ASSESSMENT METHODOLOGY

Detailed dust dispersion modelling has been conducted using the CALMET /
CALPUFF modelling system to assess the exposure of surrounding sensitive
receptors to dust emissions from the proposed development.

Ambient dust data from the Queensland DERM has been considered in the
assessment.

Further information on the assessment methodology is provided in Section 3.1
above.



4.2 RELEVANT DUST GUIDELINES

The relevant dust guidelines are those specified in the Queensland Environmental
Protection (Air) Policy 2008, as follows:

Table 9:   Applicable Dust Guidelines

                     AVERAGING
   POLLUTANT                            GUIDELINE           SOURCE
                       PERIOD

       TSP          Annual Average       90 µg/m3         EPP(Air) 2008

                    24 Hour Average
       PM10                              50 µg/m3         EPP(Air) 2008
                      (6th highest)

      PM2.5         Annual Average       8 µg/m3          EPP(Air) 2008

      PM2.5         24 Hour Average      25 µg/m3         EPP(Air) 2008

 Dust Deposition    Annual Average    120 mg/m2/day   Common ERA Condition




4.3 DESCRIPTION OF DUST MODEL
   4.3.1 METEOROLOGICAL DATA

   The dust modelling meteorological data is consistent with that described in
   Section 3.3.1 above.




Ridgewood 12-002                        22                            31 July 2014