PULP MILLS (JUDGMENT) 55 informed of them. The same applies to the plan to construct a port terminal at Fray Bentos for the exclusive use of the Orion (Botnia) mill, which included dredging work and use of the river bed. 97. However, the Court observes that the Parties disagree on whether there is an obligation to inform CARU in respect of the extraction and use of water from the river for industrial purposes by the Orion (Botnia) mill. Argentina takes the view that the authorization granted by the Uruguayan Ministry of Transport and Public Works on 12 September 2006 concerns an activity of sufficient importance (“entidad suficiente”) to affect the régime of the river or the quality of its waters and that, in this matter, Uruguay should have followed the procedure laid down in Articles 7 to 12 of the 1975 Statute. For its part, Uruguay maintains that this activity forms an integral part of the Orion (Botnia) mill project as a whole, and that the 1975 Statute does not require CARU to be informed of each step in furtherance of the planned works. 98. The Court points out that while the Parties are agreed in recognizing that CARU should have been informed of the two planned mills and the plan to construct the port terminal at Fray Bentos, they nonetheless differ as regards the content of the information which should be provided to CARU and as to when this should take place. 99. Argentina has argued that the content of the obligation to inform must be determined in the light of its objective, which is to prevent threats to navigation, the régime of the river or the quality of the waters. According to Argentina, the plan which CARU must be informed of may be at a very early stage, since it is simply a matter of allowing the Commission to “determine on a preliminary basis”, within a very short period of 30 days, whether the plan “might cause significant damage to the other party”. It is only in the following phase of the procedure that the substance of the obligation to inform is said to become more extensive. In Argentina’s view, however, CARU must be informed prior to the authorization or implementation of a project on the River Uruguay. 100. Citing the terms of Article 7, first paragraph, of the 1975 Statute, Uruguay gives a different interpretation of it, taking the view that the requirement to inform CARU specified by this provision cannot occur in the very early stages of planning, because there could not be sufficient information available to the Commission for it to determine whether or not the plan might cause significant damage to the other State. For that, according to Uruguay, the project would have to have reached a stage where all the technical data on it are available. As the Court will consider further below, Uruguay seeks to link the content of the information to the time when it should be provided, which may even be after the State concerned has granted an initial environmental authorization. 101. The Court points out that the principle of prevention, as a customary rule, has its origins in the due diligence that is required of a State in its territory. It is “every State’s obligation not to allow knowingly its territory to be used for acts contrary to the rights of other States” (Corfu 45