Article 5 Establishment of observation plots for intensive monitoring

The network of permanent observation plots established by the Member States, hereinafter ‘Level II plots’, shall be used for intensive and continuous monitoring of air pollution effects on forest ecosystems. The number of Level II plots to be selected for that network shall be limited to 15 for each Member State.

However, Member States may select a larger number of Level II plots on the condition that the number does not exceed 20 % of the number of national Level I points.

Once a new or additional Level II plot is established Member States shall together with the first data transmission concerning that plot forward a review of the selection criteria and a complete list of all plots to the Commission, including basic information such as location, that is to say longitude, latitude and altitude, and species, as well as general plot information for each Level II plot installed in a standardised form.

The Level II plots shall be selected using the common methods set out in Chapter 1 of Annex I.