Construction Construction Dust Emissions Dust emissions would be expected to be the main air pollutant during the construction of Melbourne Metro. Construction works likely to generate dust include general earthworks and clearing activities, wheel-generated dust, wind generated dust from exposed surfaces, the on-site concrete batching plant and restoration of surface areas. The main pollutants of concern are airborne particulate matter (PM10 and PM2.5) and dust deposition (see box on page Dust emissions associated with construction would be likely to vary in intensity and duration, with the potential for air quality impacts at some sensitive receptors. The risk of elevated 24-hour PM10 and PM2.5 impacts and monthly dust deposition impacts at the precinct level are summarised in Table Table Summary of air quality risk factors at precinct level Precinct Main issues Commentary All Receptors in very close Dust emissions would likely to be precincts proximity to works that have the intermittent in nature, with potential for potential to generate dust short-term impacts at sensitive receptors. emissions Some locations would be more affected than others, due to a higher volume of spoil being extracted, handled and transported. All Construction works coinciding During days of high background particulate precincts with days of high background matter, the addition of incremental impacts PM2.5 and PM10 from construction dust emissions could exceed the PM10 (24-hour) criteria set by Intensive construction works for SEPP (AQM) of 50 µg/m³. extended periods in close proximity to sensitive receptors All Potential to encounter Dust and odour emissions resulting from precincts contaminated spoil requiring the excavation and handling of high level dust containment contaminated soil and the operation of construction vehicles/equipment over Intensive construction works for existing contaminated soils could give rise extended periods in close to contaminated dust particles (such as proximity to sensitive receptors heavy metals) or odours, impacting on the nearest sensitive receptors. In general, dust emissions are likely to be intermittent, with impacts occurring at receptors close to construction activities and sites depending on wind direction. Specific Environmental Performance Requirements would be included in the CEMP to minimise dust emissions at the precinct level and to manage location-specific impacts.
Construction Construction Dust Emissions Dust emissions would be expected to be the main air pollutant during the construction of Melbourne Metro. Construction works likely to generate dust include general earthworks and clearing activities, wheel-generated dust, wind generated dust from exposed surfaces, the on-site concrete batching plant and restoration of surface areas. The main pollutants of concern are airborne particulate matter (PM10 and PM2.5) and dust deposition (see box on page Dust emissions associated with construction would be likely to vary in intensity and duration, with the potential for air quality impacts at some sensitive receptors. The risk of elevated 24-hour PM10 and PM2.5 impacts and monthly dust deposition impacts at the precinct level are summarised in Table Table Summary of air quality risk factors at precinct level Precinct Main issues Commentary All precincts Receptors in very close proximity to works that have the potential to generate dust emissions Dust emissions would likely to be intermittent in nature, with potential for short-term impacts at sensitive receptors. Some locations would be more affected than others, due to a higher volume of spoil being extracted, handled and transported. All precincts Construction works coinciding with days of high background PM2.5 and PM10 Intensive construction works for extended periods in close proximity to sensitive receptors During days of high background particulate matter, the addition of incremental impacts from construction dust emissions could exceed the PM10 (24-hour) criteria set by SEPP (AQM) of 50 µg/m³. All precincts Potential to encounter contaminated spoil requiring high level dust containment Intensive construction works for extended periods in close proximity to sensitive receptors Dust and odour emissions resulting from the excavation and handling of contaminated soil and the operation of construction vehicles/equipment over existing contaminated soils could give rise to contaminated dust particles (such as heavy metals) or odours, impacting on the nearest sensitive receptors. In general, dust emissions are likely to be intermittent, with impacts occurring at receptors close to construction activities and sites depending on wind direction. Specific Environmental Performance Requirements would be included in the CEMP to minimise dust emissions at the precinct level and to manage location-specific impacts.
MMRP_Chapter-12_Air-Quality.docx