In case of one or more events referred to in Article 11(3) and 12(6) of Directive 2006/21/EC occur in a Member State, the concerned Member State shall transmit to the Commission for each event the information detailed in Annex II on a yearly basis. This information shall cover the period between 1 May and 30 April of the following year and shall be transmitted no later than 1 July of that year to the Commission.