It took time but finally arrived. The RD 509/2007 approves the Regulation IPPC and also updates the atmospheric levels of protection by sector. These levels of protection are based on the use of BAT (Best Available Techniques - Best Available Technologies) reflected in the sector's respective documents that lists the best references on technology installed in facilities and their environmental performance. It also establishes technical measures for the handling of cases, allows the recognition of environmental management systems ISO 14001 and EMAS. It is notorious Annex I, which lists a number of activities subject to Law 16/2002 or IPPC Act are designated in a stated mode but not limited, it becomes a kind of clarification on activities that are included and whose inclusion or not, at some point there may have been discrepancies.