![]() ![]() As the noise exposure increases, it will cross the ‘no observed effect’ level. Revision date: 22 07 2019 How can it be established whether noise is likely to be a concern?Īt the lowest extreme, when noise is not perceived to be present, there is by definition no effect. See the noise policy statement for England for further information. In some circumstances adverse effects are defined in terms of a combination of more than one factor such as noise exposure, the number of occurrences of the noise in a given time period, the duration of the noise and the time of day the noise occurs. No observed effect level: this is the level of noise exposure below which no effect at all on health or quality of life can be detected.Īlthough the word ‘level’ is used here, this does not mean that the effects can only be defined in terms of a single value of noise exposure.Lowest observed adverse effect level: this is the level of noise exposure above which adverse effects on health and quality of life can be detected.Significant observed adverse effect level: This is the level of noise exposure above which significant adverse effects on health and quality of life occur.Revision date: 22 07 2019 What are the observed effect levels? As noise is a complex technical issue, it may be appropriate to seek experienced specialist assistance when applying this policy. In line with the Explanatory note of the noise policy statement for England, this would include identifying whether the overall effect of the noise exposure (including the impact during the construction phase wherever applicable) is, or would be, above or below the significant observed adverse effect level and the lowest observed adverse effect level for the given situation. whether or not a good standard of amenity can be achieved.whether or not an adverse effect is occurring or likely to occur and.whether or not a significant adverse effect is occurring or likely to occur.Plan-making and decision making need to take account of the acoustic environment and in doing so consider: Revision date: 22 07 2019 How can noise impacts be determined? It can, where justified, although it is important to look at noise in the context of the wider characteristics of a development proposal, its likely users and its surroundings, as these can have an important effect on whether noise is likely to pose a concern. Revision date: 22 07 2019 Can noise override other planning concerns? Related policy: paragraph 170e, paragraph 180a, paragraph 180b, paragraph 182 Good acoustic design needs to be considered early in the planning process to ensure that the most appropriate and cost-effective solutions are identified from the outset. When preparing plans, or taking decisions about new development, there may also be opportunities to make improvements to the acoustic environment. Noise needs to be considered when development may create additional noise, or would be sensitive to the prevailing acoustic environment (including any anticipated changes to that environment from activities that are permitted but not yet commenced). Noise When is noise relevant to planning? If you’d like an email alert when changes are made to planning guidance please subscribe. Where plans are being prepared under the transitional arrangements set out in Annex 1 to the revised National Planning Policy Framework, the policies in the previous version of the framework published in 2012 will continue to apply, as will any previous guidance which has been superseded since the new framework was published in July 2018.
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