A noise impact assessment helps to measure the impact of industrial or commercial noise, such as new outdoor air conditioning units or a kitchen extract fan on nearby residential areas. Required by local and/or national planning authorities, this assessment helps determine whether noise from activities such as manufacturing, HVAC systems, or site operations could cause disruption or complaints.
Also known as a BS 4142 assessment, it compares the noise levels from these sources to the existing background noise, providing an objective measure of impact. It is essential for ensuring compliance with planning conditions and environmental regulations, and for implementing effective noise mitigation strategies. Contact us to learn more about how our BS 4142 assessments can support your planning application and minimise noise-related issues.
The Control of Pollution Act (1974) recognises noise as a form of pollution, with the World Health Organisation highlighting its negative impact on health. Excessive noise levels from a commercial or industrial site or otherwise plant noise can affect the occupants of the nearest noise sensitive dwellings; leading to potential legal disputes and nuisance complaints.
Effective noise monitoring and reporting is essential to ensure compliance and minimise disruption to peoples lives. Our noise impact assessments may help to achieve planning consent and reduce the risk of legal claims.
What to Expect
A BS 4142 style noise impact assessment typically starts with a baseline noise survey, which establishes background sound levels which are representative of the nearest residential accommodation. This is typically done over a typical 24-hour weekday period.
Using provided acoustic data, the cumulative impact is modelled using proprietary in-house acoustic propagation modelling software rated against the background sound level.
If required, mitigation may involve specifying enclosures, acoustic barriers, as well as adjusting the install location of any plant or its operating times.
The results of the survey, and any required mitigation details are compiled in an acoustic report for submission. This comprehensive report ensures your development meets all necessary acoustic standards, such as BS 4142. See our noise impact assessment process below.
We actively encourage you to engage with us early. Addressing acoustics from the start, such as when selecting items of plant can lead to significant cost savings and a smoother planning process. Contact us today to start optimising your development for acoustic excellence.
Our Process
1. Initial Consultation & Baseline Noise Survey
Baseline noise surveys help to establish the existing background sound levels representative of the nearest residential properties. Typically required for new developments and planning applications, as well as for plant-related noise assessments.
2. Data Analysis & BS 4142 Report
Our Noise Impact Assessment reports present our data and where necessary, provide recommendations on mitigation. This may include details of acoustic barriers, acoustic enclosures, sound attenuators and other methods.
3. Compliance Sound Testing
If required, post-completion compliance sound testing is occasionally conducted which ensures that the rating sound level of the proposed scheme will not be in excess of the background sound level at the nearest residential dwellings.
Standards & Guidance
When it comes to commercial or industrial noise impact assessments for residential developments, several key standards and guidelines must be considered to ensure compliance. These include BS 4142, IEMA Guidelines for Environmental Noise Impact Assessment, and the Association of Noise Consultants Technical Note.
Each of these play crucial roles in guiding developers, architects, and acoustic consultants in creating sound environments that meet regulatory requirements and enhance residential quality of life. See below for further details.
British Standard BS 4142:2014+A1:2019
British standard BS 4142:2014+A1:2019 (BS 4142) ‘Methods for Rating and Assessing Industrial and Commercial Sound’ provides guidance for evaluating the impact of industrial and commercial noise on nearby residential and sensitive areas. It offers methods for comparing noise levels from industrial sources to background sound levels, helping to assess whether the noise is likely to cause disturbance or complaints. This standard is crucial for developers, acoustic consultants, and planners as it outlines criteria for assessing noise impact and determining the need for mitigation measures, ensuring that industrial activities do not adversely affect local communities and comply with planning and environmental regulations.
BS 4142:2014+A1:2019 Technical Note
The ANC Technical Note on BS 4142 is a collaborative guidance document created by the Association of Noise Consultants (ANC) to assist practitioners in the effective application of the standard. It offers a comprehensive framework for assessing the impact of industrial and commercial noise on residential developments. The note emphasises the significance of thorough noise assessments, the importance of site-specific mitigation strategies, and effective stakeholder communication throughout the planning process. By integrating these considerations, the ANC Technical Note ensures that developments are designed with a focus on acoustic impact from the outset, promoting a harmonious balance between industrial activities and community wellbeing.
IEMA Guidance
The 2014 IEMA Guidelines on Environmental Noise Impact Assessment provide critical strategies for assessing and managing the impacts of commercial and industrial noise on residential developments. These guidelines outline methodologies for conducting comprehensive noise impact assessments that consider the specific characteristics of industrial activities and their effects on nearby communities. They emphasise the importance of a holistic approach, integrating noise management with other environmental factors to ensure sustainable development. By adhering to the IEMA guidelines, developers can effectively balance noise control with overall environmental quality, ensuring that residential spaces remain comfortable and conducive to well-being in areas affected by commercial and industrial noise.
Book a Noise Impact Assessment
Ready for an initial consultation or to book in a noise survey with Polaris Acoustics? Have any further questions about our environmental noise surveys? Our team is here to assist you. Click below to get in touch. We can’t wait to hear from you!
