A Noise Impact Assessment (NIA) is usually requested by the local authority as a condition of planning permission, whether in connection with a new noise-making development or a new noise-sensitive development, or sometimes both!
A NIA typically requires a review of the site followed by a baseline survey to establish the existing background noise climate. Assessment of your proposal alongside relevant guidance and comparison with the baseline noise survey. Where necessary, make recommendations for noise mitigation measures and provide a formal technical report suitable for submission to the local authority.