Eglinton Crosstown West Extension Environmental Project Report Addendum
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EGLINTON CROSSTOWN WEST EXTENSION ENVIRONMENTAL PROJECT REPORT – 2020 ADDENDUM JUNE 2020 Metrolinx Eglinton Crosstown West Extension Contract: TC85-3A Eglinton Crosstown West Extension Environmental Project Report Addendum Issue and Revision Record Rev Date Originator Checker Approver Description Christa Beard Katherine A April 1, 2020 Marianne Alden Draft EPR Addendum Report Sara Khawaja Kung Christa Beard Katherine B June 3, 2020 Marianne Alden For Information Sara Khawaja Kung This document has been prepared for the titled project or named part thereof and should not be relied upon or used for any other project without an independent check being carried out as to its suitability and prior written authorization of 4Transit being obtained. 4Transit accepts no responsibility or liability for the consequence of this document being used for a purpose other than the purposes for which it was commissioned. Any person using or relying on the document for such other purpose agrees, and will by such use or reliance be taken to confirm their agreement to indemnify 4Transit for all loss or damage resulting therefrom. 4Transit accepts no responsibility or liability for this document to any party other than the person by whom it was commissioned. To the extent that this report is based on information supplied by other parties, 4Transit accepts no liability for any loss or damage suffered by the client, whether through contract or tort, stemming from any conclusions based on data supplied by parties other than 4Transit and used by 4Transit in preparing this report. H-175825-4T-EWE-00-RPT-EN-0001, Rev. B Table of Contents E.1 Executive Summary ..................................................................................................................... i E.1.1 Study Purpose .............................................................................................................................. i E.1.2 Summary of Proposed Design Changes .................................................................................. ii E.1.3 Existing Conditions and Effects .............................................................................................. iii E.1.4 Summary of Consultation/Engagement Activities ................................................................. iv E.1.5 Future Work and Project Implementation ................................................................................ v 1. Introduction ........................................................................................................................................... 1 1.1 Study Purpose .............................................................................................................................. 1 1.2 Study Background......................................................................................................................... 2 1.3 Summary of Proposed Design Changes ...................................................................................... 2 1.3.1 Project Significance............................................................................................................. 9 1.4 Study Area .................................................................................................................................... 9 1.5 EPR Addendum Process ............................................................................................................ 11 1.5.1 EPR Addendum Approval Process ................................................................................... 11 1.6 Relevant Planning Policies, Studies, and Documents ................................................................ 12 1.6.1 Province of Ontario Planning Policies ............................................................................... 12 1.6.1.1 Provincial Policy Statement (2020) ......................................................................... 12 1.6.1.2 A Place to Grow: Growth Plan for the Greater Golden Horseshoe (2019) ............. 13 1.6.1.3 Greenbelt Plan (2017) ............................................................................................. 13 1.6.1.4 Greater Golden Horseshoe Transportation Plan (2017) ......................................... 14 1.6.1.5 Metrolinx 2041 Regional Transportation Plan (2018) ............................................. 14 1.6.1.6 Ministry of Transportation Southern Highways Program - 2017 to 2021 ................ 15 1.6.2 Greater Toronto Airport Authority Planning Policies ......................................................... 15 1.6.2.1 Toronto Pearson International Airport Master Plan - 2017 to 2037 ........................ 15 1.6.3 Municipal Land Use and Transportation Policies .............................................................. 15 1.6.3.1 City of Toronto Planning Studies ............................................................................. 15 1.6.3.1.1 City of Toronto Official Plan (2019) ................................................................. 15 1.6.3.1.2 Eglinton Connects Study ................................................................................. 16 1.6.3.1.3 Eglinton Connects Study Streetscape and Cycle Track Preliminary Design ............................................................................................................. 16 1.6.3.2 Region of Peel Planning Studies ............................................................................. 16 1.6.3.2.1 Region of Peel Official Plan (2018) ................................................................. 16 1.6.3.2.2 Region of Peel Long Range Transportation Plan (2019) ................................ 17 1.6.3.3 City of Mississauga Planning Studies ..................................................................... 17 1.6.3.3.1 City of Mississauga Official Plan (2015) ......................................................... 17 1.6.3.3.2 City of Mississauga Transportation Master Plan (2019) ................................. 17 1.6.3.3.3 MiWay Five Service Plan (2016-2020) ........................................................... 18 1.6.3.3.4 MiWay Five Service Plan (2021-2025) ........................................................... 18 1.6.3.3.5 MiWay Infrastructure Growth Plan .................................................................. 19 1.7 Consultation Program Overview ................................................................................................. 19 2. Update of the Project Description..................................................................................................... 20 2.1 Design Elements ......................................................................................................................... 20 2.1.1 Typical Runningway and Portals ....................................................................................... 20 2.1.2 Stations ............................................................................................................................. 20 H-175825-4T-EWE-00-RPT-EN-0001, Rev. B 2.1.3 Structures .......................................................................................................................... 21 2.1.3.1 Twin Tunnels ........................................................................................................... 21 2.1.3.2 Emergency Exit Buildings ....................................................................................... 21 2.1.3.3 Cross Passages ...................................................................................................... 22 2.1.3.4 Traction Power Substations .................................................................................... 22 2.1.3.5 Bridge Over the Humber River ................................................................................ 22 2.1.4 Modifications to Eglinton Avenue West and Traffic Management .................................... 22 2.1.5 Maintenance and Storage Facility ..................................................................................... 23 2.2 Construction Methods ................................................................................................................. 23 2.2.1 Below-Grade Construction ................................................................................................ 23 2.2.2 Elevated Construction ....................................................................................................... 24 2.3 Summary of Design Changes ..................................................................................................... 24 3. Existing Conditions ............................................................................................................................ 28 3.1 Natural Environment ................................................................................................................... 28 3.1.1 Hydrogeology/Groundwater .............................................................................................. 28 3.1.2 Surface Water/Drainage ................................................................................................... 28 3.1.2.1 Scarlett Road to Weston Road ................................................................................ 28 3.1.2.2 Renforth Portal ........................................................................................................ 29 3.1.3 Fish and Fish Habitat ........................................................................................................ 29 3.1.3.1 Lower Main Branch