® SOUTHERN AFRICAN DEVELOPMENT COMMUNITY paragraph (b). The request shall be accompanied by a documented explanation setting forth its grounds. (i) 2. (ii) If the State planning the measures finds that it is not under an obligation to provide a notification under paragraph (b), it shall so inform the other State, providing a documented explanation setting forth the reasons for such finding. If this finding does not satisfy the other State, the two States shall, at the request of that other State, promptly enter into consultations and negotiations in the manner provided in sub-paragraphs (i) and (ii) of paragraph (g). (iii) During the course of the consultations and negotiations, the State planning the measures shall, if so requested by the other State at the time it requests the initiation of consultations and negotiations, refrain from implementing or permitting the implementation of those measures for a period of six months unless otherwise agreed. Urgent implementation of planned measures (i) In the event that the implementation of planned measures is of the utmost urgency in order to protect public health, public safety or other equally important interests, the State planning the measures may, subject to paragraphs 7 and l 0 of Article 3 (7) and (l0), immediately proceed to implementation, notwithstanding the provisions of paragraph (d) and subparagraph (iii) of paragraph (g). (ii) In such case, a formal declaration of the urgency of the measures shall be communicated without delay to the other Watercourse States referred to in paragraph (b) together with the relevant data and information. (iii) The State planning the measures shall, at the request of any of the States referred to in paragraph (ii), promptly enter into consultations and negotiations with it in the manner indicated in sub-paragraphs (i) and (ii) of paragraph (g). Environmental Protection and Preservation (a) Protection and preservation of ecosystems State Parties shall, individually and, where appropriate, jointly, protect and preserve the ecosystems of a shared watercourse. (b) Prevention, reduction and control of pollution (i) State Parties shall, individually and, where appropriate, jointly, prevent, reduce and control the pollution and environmental degradation of a shared watercourse that may cause significant harm to other Watercourse States or to their environment, including harm to human health or safety, to the use of the waters for any beneficial purpose or to the living resources of the watercourse. -8· Revised Protocol on Shared Watercourses