What is a Noise Survey and when is it usually required?
Noise surveys are normally required where:
- The application is for a development that has the potential to cause noise disturbance to existing residential properties. For example, industry, or other development with fixed machinery/plant.
- The application is for proposed noise sensitive development, such as residential, next to existing sources such as major transport routes, industry or commercial uses
Do I need to submit a noise survey as part of the planning application?
Yes, preferably as this allows the Environmental Protection Team to assess if the
proposed development is suitable, and that any noise can be controlled adequately. If a noise survey is submitted at a later date it may delay the application process. It is often not possible to grant planning consent with a condition requiring a survey at a later date, as until a survey is completed the Environmental Protection Team cannot assess what the noise impact may be.
How do I organise a noise survey?
A noise survey needs to be carried out by a suitably qualified acoustic consultant. Air Pressure Testing is a UKAS accredited and is therefore deemed ‘suitably qualified to undertake noise surveys’ by local councils.
How much does a noise survey cost?
The price of a survey will vary depending on the work required. However a typical survey will be £650 Plus Vat.
What type of noise survey methodology is accepted?
However as a general rule the following methods will be accepted provided they are suitable for the development site:
- PPG24 for the assessment of noise affecting noise sensitive developments near to existing sources of noise, mainly relating to traffic sources. A full 24- hour survey is normally required although the shortened measurement procedure in the Calculation of Road Noise (CRTN) can be used if appropriate.
- BS4142:1997 for the assessment of industrial noise that may affect existing residential property. This is used mainly used for fixed industrial plant such as fans, I.e. if you need to install air conditioning plant to a roof or wall in the middle of a residential neighbourhood.
How can I reduce noise levels on my project and what are the proffered methods.
If possible, noise should always be controlled at source. For example, a noise barrier or an acoustic enclosure around the noise source is always preferable to upgrading the local building façades. When this cannot be undertaken noise reduction measures such as acoustic glazing to habitable rooms may be acceptable.
Where acoustic glazing is proposed, and it can be opened this should be taken into account in the noise survey/prediction report. Where it is necessary to keep windows closed to achieve the required internal noise levels, you would need additional ventilation to be installed to ensure that residents have the choice in opening their windows.
If you need any information in regards to noise surveys please contact us now at: firstname.lastname@example.org
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