Government Guidance on Risk Assessment for Your Environmental Permit has been recently updated
The Government Guidance on Risk Assessment for Your Environmental Permit has been recently updated:
The most important updates relate to the measuring background sound level (second paragraph below):
“The noise impact assessment for human residential receptors must be done in line with the BS 4142:2014 standard and by a suitably qualified person.
When applying for a variation, do not include the noise from the existing site (before changes) as part of the background, known as the ‘residual level’ in BS 4142:2014. Your noise impact assessment must consider all the noise resulting from the proposed variation - the existing site and the variation together. Show both components clearly and then add them together to give a new total for the site noise at the receptors. The impact assessment will be based on this new value, known as the ‘specific level’ in BS 4142:2014.”