GovWire

National and international standards sometimes need supporting Method implementation documents (MIDs) to make sure they are followed consistently. MIDs explain how to use the standards and guidance for regulatory monitoring when you are applying for a permit or complying with permit conditions.

This MID supplements BS 4142:2014+A1:2019 Method for rating and assessing industrial and commercial sound (BS 4142).

You must follow the requirements in this MID if you are:

• applying to the Environment Agency for a new environmental permit or applying to vary an existing permit

• sending sound monitoring and assessments to the Environment Agency