Air and noise assessments are often required for new developments or activities where there is a risk that air or noise emissions from the development may impact nearby sensitive receptors. Sensitive receptors are most commonly residential dwellings but can also include schools, medical centres and commercial places.
A noise assessment for a new development normally involves monitoring noise levels at a site before a development occurs to understand the existing or ambient noise levels. The ambient noise levels are used to determine noise assessment criteria to protect nearby sensitive receptors. Then noise emissions from the new development are estimated using modelling software and compared to the noise assessment criteria. If the emissions are not predicted to meet the assessment criteria then noise control measures such as acoustic fences are recommended to protect the sensitive receptors from noise emitted by the development.
An air quality assessment may involve monitoring of pre-development conditions but this is not commonly undertaken. Usually air emissions from a development are estimated using modelling software or other calculation methods and compared to air quality assessment criteria in legislation. If the emissions are not predicted to meet the assessment criteria then control measures are recommended to protect the sensitive receptors from air emissions from the development.
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