 In the submission, OPG applied the criteria of technical and economic feasibility to the entire province of Ontario, and provided the Panel with two geographic regions that met the criteria - Crystalline Rock, a massive region extending throughout central and northern Ontario, and Sedimentary Rock, encompassing nearly all of southwestern Ontario.Included in this response were a series of GPS coordinates mapping the perimeter of the Crystalline and Sedimentary alternate locations, which encompass more than 70% of the province of Ontario 

On December 12, 2016, the Governor in Council, under subsection 54(4) of the Canadian Environmental Assessment Act, 2012, extended the time limit for the issuance of the Decision Statement for the proposed DGR project by 243 days.This extends the date of a decision on the project proposal into August, 2017.