The present Ordinance implements the Council Directive 91/676/EEC concerning the protection of waters against pollution caused by nitrates from agricultural sources. The present Ordinance applies to plants storing fertilizers containing nitrates. Article 2 establishes that the said plants have to be built in such a way that substances dangerous for water cannot flow out; article 3 contains a code of good agricultural practice; article 4 lays down provisions relating to requirements for storage f