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Heggie conducted an air quality impact assessment for the construction and operation of the proposed Hidden Valley Project, Papua New Guinea (PNG).
Heggies was commissioned to conduct an air quality impact assessment for the construction and operation of the proposed Hidden Valley Gold Project, Papua New Guinea (PNG). The Project comprises four exploration licences of 966 square kilometres in the Wau District of Morobe Province. The propoesed open-pit mining operations are located 210 km north-northwest of Port Moresby and 90 km south-southwest of Lae, the two largest cities in PNG. Modelling of fugitive dust emissions and an assessment of combustion emissions was undertaken to determine the resulting air quality impacts of the proposed operation. Atmospheric dispersion modelling predictions of emissions from the site were undertaken using the Ausplume Gaussian Plume Dispersion Model software developed by EPA (Victoria).The Air Pollution Model (TAPM) software, developed by the [Australian] Commonwealth Scientific and Industrial Research Organisation (CSIRO) was used to simulate the meteorology of the area. TAPM is a prognostic model which may be used to predict three dimensional meteorological data - and is useful when local weather data are unavailable.The outputs for both modelling scenarios were tabulated and presented graphically using concentration contours, indicating the air quality impacts at the residential receivers in the vicinity of the mining site.
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