Noise impact assessment

Photo: COWI
Coloured noise contour maps give an overall indication as to where noise problems can be expected
Noise assessment, monitoring and modelling is a valuable planning tool to uncover potential conflicts and identify solutions.

Where potential noise problems are likely, local authority development plans should be accompanied by a noise impact assessment. The assessment describes the noise situation and ensures that the planned development does not lead to new noise conflicts.

Identifying noise sources

COWI prepares noise assessments that identify the location of noise sources that can result in critical noise exposure levels. We uncover the issues that could arise from an intended development of a local area. Noise issues could arise from the proximity of a nearby busy road or railway. Noise sources could also be industrial or recreational (e.g. a motor sport racing track).

Noise levels and limit values

When noise exposure levels need evaluating in relation to national guidelines and limit values, we identify where limits are exceeded and uncover the noise sources responsible that need to be mitigated. Mitigation measures are evaluated both in respect of cost and effect.

Mapping noise problemsCOWI has extensive experience with the preparation of noise assessments. When determining customer requirements, we conduct a close dialogue with all the involved parties. Where appropriate, the latest methods and calculation tools such as SoundPLAN, CadnaA and IMMI are used. Coloured noise contour maps presenting noise levels in 5 dB intervals give an overall indication as to where noise problems can be expected.

LAST UPDATED: 12.12.2016