April 5, 2017 Draft Disclaimer This document is a draft and is provided for information only. The information contained herein is subject to change during the Transit Project Assessment Process. The final version of this document will be available following the Notice of Completion. APPENDIX B Preliminary ESA Gap Analysis Report – Rail Corridors DRAFT GO Rail Network Electrification Transit Project Assessment Process Preliminary Environmental Site Assessment Gap Analysis Report - Rail Corridors Submitted to: Submitted by: GF Project No. 060277/060070 DRAFT GO Rail Network Electrification TPAP Preliminary Environmental Site Assessment Gap Analysis Report - Rail Corridors METROLINX GO RAIL NETWORK ELECTRIFICATION Quality Assurance Document Release Form Name of Firm: MORRISON HERSHFIELD Document Name: Preliminary Environmental Site Assessment Gap Analysis Report - Rail Corridors Revision No. 1 Submittal Date: November 24, 2016 Discipline: Preliminary Environmental Site Assessment Prepared By: Jonathan Kerr and Forest Pearson Date: July, 2016 Reviewed By: Leah Deveaux Date: October 14, 2016 Approved By : Amber Saltarelli Date: November 30, 2016 Project Manager The above electronic signatures indicate that the named document is controlled by GF Canada ULC, and has been: 1. Prepared by qualified staff in accordance with generally accepted professional practice. 2. Checked for completeness and accuracy by the appointed discipline reviewers and that the discipline reviewers did not perform the original work. 3. Reviewed and resolved compatibility interfaces and potential conflicts among the involved disciplines. 4. Updated to address previously agreed-to reviewer comments, including any remaining comments from previous internal or external reviews. 5. Reviewed for conformance to scope and other statutory and regulatory requirements. 6. Determined suitable for submittal by the Project Manager. DRAFT REVISION HISTORY Morrison Hershfield 12/2/16 i | P a g e GO Rail Network Electrification TPAP Preliminary Environmental Site Assessment Gap Analysis Report - Rail Corridors Revision Date Comments 1.0 December 2, 2016 Submission to Metrolinx DRAFT Morrison Hershfield 12/2/16 ii | P a g e DISCLAIMER AND LIMITATION OF LIABILITY The report dated January 2017 (“ Report ”), which term which includes its text, tables, figures and appendices) has been prepared by Morrison Hershfield Limited (“ Morrison Hershfield ”) under contract to Gannett Fleming Transit and Rail Systems for the exclusive use of Metrolinx . Morrison Hershfield disclaims any liability or responsibility to any person or party other than Metrolinx for loss, damage, expense, fines, costs or penalties arising from or in connection with the Report or its use or reliance on any information, opinion, advice, conclusion or recommendation contained in it. To the extent permitted by law, Morrison Hershfield also excludes all implied or statutory warranties and conditions. In preparing the Report, Morrison Hershfield has relied in good faith on information provided by third party agencies, individuals and companies as noted in the Report. Morrison Hershfield has assumed that this information is factual and accurate and has not independently verified such information. Morrison Hershfield accepts no responsibility or liability for errors or omissions that are the result of any deficiency in such information. The opinions, advice, conclusions and recommendations in the Report are valid as of the date of the Report and are based on the data and information collected by Morrison Hershfield during its investigations as set out in the Report. No assurance, representation or warranty is given regarding the accuracy or completeness of this information and data. The opinions, advice, conclusions and recommendations in the Report are based on the conditions encountered by Morrison Hershfield at the site(s) at the time of its investigations, supplemented by historical information and data obtained as described in the Report. No assurance, representation or warranty is given with respect to any change in site conditions or the applicable regulatory regime subsequent to the time of the investigations. No responsibility is assumed to update the Report or the opinions, advice, conclusions or recommendations contained in it to account for events, changes or facts occurring subsequent to the date of the Report. The Report provides a professional technical opinion as to its subject matter. Morrison Hershfield has exercised its professional judgment in collecting and analyzing data and information and in formulating advice, conclusions, opinions and recommendations in relation thereto. The services performed were conducted in a manner consistent with the degree of care, diligence and skill exercised by other members of the engineering and science professions currently practicing in similar conditions. No other assurance, warranty or representation whether expressed or implied is given to Metrolinx with respect to any aspect of the services performed,DRAFT the Report or its contents. GO Rail Network Electrification TPAP Preliminary Environmental Site Assessment Gap Analysis Report - Rail Corridors TABLE OF CONTENTS DISCLAIMER AND LIMITATION OF LIABILITY III 1 BACKGROUND 14 1.1 ENVIRONMENTAL ASSESSMENT PROCESS 15 1.2 SCOPE OF THE PROJECT 15 1.3 STUDY AREA 15 GO RAIL CORRIDORS 16 TRACTION POWER FACILITY LOCATIONS 18 MODIFICATIONS TO WILLOWBROOK MAINTENANCE FACILITY AND EAST RAIL MAINTENANCE FACILITY 19 MODIFICATIONS TO EXISTING LAYOVER FACILITIES 19 MODIFIED MAINTENANCE FACILITIES 19 2 PURPOSE 20 3 SCOPE OF THE STUDY 20 3.1 OCS IMPACT ZONE 20 4 METHODOLOGY 21 5 REVIEW OF PREVIOUS ENVIRONMENTAL SITE ASSESSMENT (ESA) REPORTS 29 5.1 UNION STATION RAIL CORRIDOR 29 GAP ANALYSIS 29 AREAS OF PREVIOUSLY IDENTIFIED POTENTIAL CONTAMINATION 31 5.2 LAKESHORE WEST CORRIDOR 31 GAP ANALYSIS 33 AREAS OF PREVIOUSLY IDENTIFIED POTENTIAL CONTAMINATION 33 5.3 KITCHENER CORRIDOR 34 GAP ANALYSIS 36 AREAS OF PREVIOUSLY IDENTIFIED POTENTIAL CONTAMINATION 36 5.4 BARRIE CORRIDOR 36 GAP ANALYSIS 37 AREAS OF PREVIOUSLY IDENTIFIED POTENTIAL CONTAMINATION 37 5.5 STOUFFVILLE CORRIDOR 39 GAP ANALYSIS 39 AREAS OF PREVIOUSLY IDENTIFIED POTENTIAL CONTAMINATION 41 5.6 LAKESHORE EAST CORRIDOR 41 GAP ANALYSISDRAFT 42 AREAS OF PREVIOUSLY IDENTIFIED POTENTIAL CONTAMINATION 42 Prepared By: Morrison Hershfield 12/2/16 Rev. 1.0 iv | P a g e GO Rail Network Electrification TPAP Preliminary Environmental Site Assessment Gap Analysis Report - Rail Corridors 6 SUMMARY OF FINDINGS AND FUTURE WORK 44 6.1 RECOMMENDATIONS FOR FUTURE WORK 44 List of Tables Table 4-1. Phase I/II or Other Contaminated Site Related Documents Reviewed ..................................... 23 List of Figure Figure 1-1. GO Transit Network .................................................................................................................. 14 Figure 1-2. GO Network Electrification TPAP Study Area ......................................................................... 16 Figure 1-3. Example of OCS Support Structures (Portals) ........................................................................... 17 Figure 5-1. Union Station Rail Corridor Gap Analysis Map ......................................................................... 30 Figure 5-2. Lakeshore West Corridor Gap Analysis Map ............................................................................ 32 Figure 5-3. Kitchener Corridor Gap Analysis Map ....................................................................................... 35 Figure 5-4. Barrie Corridor Gap Analysis Map ............................................................................................ 38 Figure 5-5. Stouffville Corridor Gap Analysis Map ...................................................................................... 40 Figure 5-6. Lakeshore East Corridor Gap Analysis Map .............................................................................. 43 DRAFT Prepared By: Morrison Hershfield 12/2/16 Rev. 1.0 v | P a g e GO Rail Network Electrification TPAP Preliminary Environmental Site Assessment Gap Analysis Report - Rail Corridors Glossary of Terms Word Definition 230 kV Aerial Overhead electrical high voltage connection line from the existing Hydro One tap to Connection the new TPS. AC The acronym for Alternating Current. It i s an electric current in which the flow of electric charge periodically reverses direction, whereas in direct current (DC, also dc), the flow of electric charge is only in one direction. AFP The acronym for Alternative Financing and Procurement. An AFP model brings together private and public sector expertise in a unique structure that transfers the risk of project cost increases and scheduling delays typically associated with traditional project delivery. Area of Potential An area within the Study Area where one or more contaminants are potentially Environmental Concern present, as determined through the Contamination Overview Study including (APEC) identification of past or present land uses of concern and/or identification of a Potentially Contaminating Activity (PCA). AREMA The acronym for American Railway Engineering and Maintenance-of-Way Association. AREMA is the organization that represents the engineering function of the North American railroads. Autotransformer Apparatus which helps boost the overhead contact system (OCS) voltage and reduce the running rail return current in the 2 X 25 kV autotransformer feed configuration. It is a single winding transformer having three