These Guidance notes, issued by the Secretary of State and the Welsh Assembly Government (WAG) ("the Government"), give guidance on the conditions appropriate for the control of emissions into the air from processes and installations in most of the categories covered by the regulations.

Process Guidance notes (PG notes) cover the smaller Part B installations and Sector Guidance notes (SG notes) cover the larger and more complex A (2) activities.

The notes are all aimed at providing a strong framework for consistent and transparent regulation of installations. They are for use under the Local Air Pollution Prevention and Control (LAPPC) and Local Authority Integrated Pollution Prevention and Control (LA-IPPC) regimes established by the Pollution Prevention and Control Act 1999 and Environmental Permitting (England & Wales) Regulation 2007.

This guidance is for:

• regulators : who must have regard to the guidance when determining applications and reviewing extant authorisations and permits
• operators : who are best advised also to have regard to it when making applications, and in the subsequent operation of their process
• members of the public : who may be interested to know what the Government considers (in accordance with the legislation) amounts to appropriate conditions for controlling air emissions for the generality of processes in this particular industry sector

All of the current process guidance notes are available here to view. Select one from the list below and press 'View' for more information, clicking the link for a particular document will take you straight to the appropriate page on the DEFRA website:

View all process guidance notes.