Commission Decision of 20 December 2007 granting a derogation requested by Belgium referred to the region of Wallonia pursuant to Council Directive 91/676/EEC concerning the protection of waters against pollution caused by nitrates from agricultural sources (notified under document number C(2007) 6643) (Only the French text is authentic) (2008/96/EC)

Article 8 Monitoring

1. Maps showing the percentage of farms, percentage of livestock and percentage of agricultural land covered by individual derogation in each agricultural zone shall be drawn by the competent authority and shall be updated every year. Those maps shall be submitted to the Commission annually and for the first time by the end of 2007.

2. A monitoring network for sampling of surface and shallow groundwater shall be established and maintained to assess the impact of the derogation on water quality.

3. Survey and nutrient analysis shall provide data on local land use, crop rotations and agricultural practices on farms benefiting from individual derogations. Those data can be used for model-based calculations of the magnitude of nitrate leaching and phosphorus losses from fields where up to 230 kg nitrogen per hectare per year from livestock manure is applied.

4. Monitoring sites shall be established in order to provide data on nitrogen concentration in soil water and corresponding nitrogen losses through the root zone into groundwater, as well as on nitrogen losses by surface and subsurface runoff, both under derogation and non derogation conditions.