Member States are required, under article 15(3) of Directive 96/61/EC, to inventory and transmit to the Commission data on principal emissions and responsible sources. As established by article 1 of this Decision, Member States shall report to the Commission on emissions from all individual facilities with one or more activities as mentioned in Annex I to Directive 96/61/EC. Four Annexes are hereby attached. Annex A1 contains the list of pollutants to be reported if threshold value is exceeded.