- PPG 24
PPG24 (Planning Policy Guidance) noise assessments are normally requested as part of local council planning procedure.
Noise tests should be conducted with a Class I noise meter for accurate results. Average noise levels (LAeq) are measured over a full 24 hour cycle - 16 hour (0700 - 2300) daytime, and 8 hour (2300 - 0700) night time.
LAeq dB results provide a mean arithmetic average (dB(A)) which fall into a Noise Exposure Category (A, B, C or D):
A - Noise need not be taken as a determining factor in granting planning permission, although the noise level at the high end of the category should not be regarded as a desirable level.
B - Noise should be taken into account when determining planning applications and, where appropriate, conditions imposed to ensure an adequate level of protection against noise.
C - Planning permission should not normally be granted. Where it is considered that permission should be given, for example because there are no alternative sites available, conditions should be imposed to ensure a commensurate level of protection against noise.
D - Planning Permission should normally be refused.
Categories B and C are usually passed with suitable noise mitigation measures put into place.
ee also
*
Planning Policy Guidance Notes
*Town and country planning in the United Kingdom References
* British Standards 7445-1:2003
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