# Commission Implementing Decision (EU) 2017/847 of 16 May 2017 granting a derogation requested by Denmark pursuant to Council Directive 91/676/EEC concerning the protection of waters against pollution caused by nitrates from agricultural sources (notified under document C(2017) 2891) (Only the Danish text is authentic), Article 10: Monitoring

Extent: E+W+S+N.I.

1. The competent authorities shall ensure that maps are drawn up showing the following:
(a) the percentage of the cattle farms in each municipality which are covered by authorisations;
(b) the percentage of the livestock in each municipality which is covered by authorisations;
(c) the percentage of the agricultural land in each municipality which is covered by authorisations;
Those maps shall be updated every year.
Data on crop rotations and agricultural practices covered by authorisations shall be collected by the competent authorities. Those data shall be updated every year.
2. The competent authorities shall monitor root zone water, surface waters and groundwater and shall provide the Commission with data on nitrogen and phosphorus in the soil profile and nitrates concentrations in surface and groundwater, both under derogation and non-derogation conditions.
The monitoring shall be carried out at farm field scale in the agricultural catchment national monitoring programme. The monitoring sites shall be representative of the main soil types, the prevalent fertilisation practices and the main crops. Reinforced monitoring shall be conducted in agricultural catchments on sandy soils.
In addition, nitrates concentrations in surface and groundwater shall be monitored in at least 3 % of all farms benefiting from authorisations.
3. The competent authorities shall carry out surveys and continuous nutrient analyses in the agricultural catchment national monitoring programme and shall provide data on local land use, crop rotations and agricultural practices on cattle farms benefiting from an authorisation.
Information and data collected from nutrient analysis as referred to in Article 7 and from monitoring as referred to in Article 10(2) shall be used for model-based calculations of nitrogen and phosphorus losses from cattle farms benefitting from an authorisation based on scientific principles.
4. The competent authorities shall quantify the percentages of the land under derogation which is covered by:
(a) clover or alfalfa in grassland;
(b) barley and pea undersown with grass.

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Source: https://www.legislation.gov.uk/eudn/2017/847/article/10 (the official version)
Page: https://openlegislation.uk/eu-decision-2017-847/article-10
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.