The 407 East EA Study was undertaken in accordance with the requirements for an Individual EA under the Ontario Environmental Assessment Act (OEAA).

On June 3, 2010, the Minister of the Environment (MOE), with the approval of Cabinet, made a decision to allow the 407 East transportation corridor to proceed subject to strict conditions. The approval by MOE is for the 407 Corridor as detailed in the Environmental Assessment (EA) Report, including the extension of 407 from Brock Road in Pickering to Highway 35/115 in Clarington and the two north-south links connecting the 407 extension to Highway 401, one in Whitby (West Durham Link) and the other in Clarington (East Durham Link).

The main phases of the project under the OEAA were as follows:

  • Project Initiation
  • Transportation Problems and Opportunities (Purpose of and Rationale for the Undertaking)
  • Transportation Alternatives (Alternatives to the Undertaking)
  • Route Alternatives (Alternative Methods for Carrying out the Undertaking)
  • Preliminary Design
  • EA Report / Documentation

To read more about the Study process under the requirements of the OEAA, click here (PDF/2.5mb) for Chapter 2 of the EA Report.

407 East EA Process Overview and Overview of the Study Schedule

The EA Report was submitted to MOE for formal review and approval on August 28, 2009. A Notice of Completion of MOE’s Review of the EA Report was published on December 18, 2009.  The EA Report was approved by the Minister of the Environment (MOE) on June 3rd, 2010. 

To view the EA Report, please click here. To view the MOE Review of the 407 East EA Report click here. To view the MOE Notice of Approval and the associated conditions of approval click here.

In addition to requiring approval from the Minister of the Environment under the OEAA, there are a number of other provincial, federal and municipal approvals and agreements required to implement the Recommended Design for the 407 East Technically Preferred Route.  For more information regarding approval and agreement requirements for implementation of the Recommended Design for the 407 East Technically Preferred Route, please click here to read Chapter 11 of the EA Report.

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