1. My distinguished colleagues on the Arbitral Tribunal hearing the present case are issuing by majority vote a "Decision on Track I B" dated 12 March 2015 (the "Decision") in respect of which this Note ofDissent is made.

2. I am fully aware of the particular and limited nature of the Decision, which, as the Decision itself states (paras. 6, 183, 184, 185), is not an award, is merely of interim nature, may be re-visited in full or in part later in this arbitration, and is only concerned with the discrete analysis of the complaint filed on 7 May 2003 with the Corte Superior de Justicia de Nueva Loja by the Lago Agrio plaintiffs as the initiation of the Lago Agrio lawsuit against Texaco Inc.(the "Complaint"). I am equally aware that the Decision in principle distances itself from any specific or technical analysis under Ecuadorian law of the questions subject to the Decision and indicates that it considers such questions strictly from the perspective of an international tribunal under the Ecuador-U.S.A. Treaty for the Encouragement and Reciprocal Protection of Investment.