Member States are obliged to make returns to the European Commission covering releases of key substances listed in the Pollutant Release and Transfer Register (PRTR) from installations described in Annex 1 of the Integrated Pollution Prevention and Control (IPPC) Directive.
Permitted installations are required to complete a Pollution Inventory form annually:
Pollution Inventory NI Form (.PDF 691Kb)
Certain other Installations prescribed under the European Pollutant Release and Transfer Register (E-PRTR) Regulations must complete and submit a shorter version of the Pollution Inventory Form. This form is available from the link below:
EPRTRNI Short Form (.PDF 502Kb)
Guidance to assist with filling out the application form are available at:
Pollution Inventory NI Guidance Notes (.PDF 820Kb)
Defra, on behalf of the United Kingdom, have recently launched the UK PRTR site 
where additional information on the 2008 Nace codes and annual UK releases are available:
To view the European PRTR website follow this link.