Introduction  These maps show the potential area affected by noise from Grid or Primary Substations. Acoustic mitigation strategies that have already been applied to some substations are not reflected in the maps.Please take this into account when looking at individual sites. Please note this dataset is restricted, and if you would like to be considered for access, please contact: "opendata @ukpowernetworks.co.uk" Developers and local authority planners should be aware that the responsibility to mitigate noise issues rests with the developer as the ‘agent of change’. Methodological Approach There are three contours:Distance (m)Predicted Noise Level (dBA)ComplaintsAction4044Likely from any new residential developmentPlease consult environment@ukpowernetworks.co.uk7539Possible from any new residential developmentPlease consult environment@ukpowernetworks.co.uk13534Not very likely Quality Control Statement Quality Control Measures include: Verification steps to match features only with confirmed functional locations. Manual review and correct of data inconsistencies Use of additional verification steps to ensure accuracy in the methodology Assurance Statement The Open Data Team and Environment Team worked together to ensure data accuracy and consistency. Other Download dataset information: Metadata (JSON) Definitions of key terms related to this dataset can be found in the Open Data Portal Glossary: https://ukpowernetworks.opendatasoft.com/pages/glossary/