Stouffville Rail Corridor Grade Separations Project – Cultural Heritage Report: Existing Conditions and Preliminary Impact Assessment Final Draft Report Reference: RQQ-2014-C1-092 Prepared for: Metrolinx 20 Bay Street, 6th Floor Toronto ON M5J 2W3 Prepared by: Stantec Consulting Ltd. 300W-675 Cochrane Drive Markham ON L3R 0B8 File: 165011004 August 26, 2020 This page intentionally left blank Sign-off Sheet This document entitled Stouffville Rail Corridor Grade Separations Project – Cultural Heritage Report: Existing Conditions and Preliminary Impact Assessment t was prepared by Stantec Consulting Ltd. (“Stantec”) for the account of Metrolinx (the “Client”). Any reliance on this document by any third party is strictly prohibited. The material in it reflects Stantec’s professional judgment in light of the scope, schedule and other limitations stated in the document and in the contract between Stantec and the Client. The opinions in the document are based on conditions and information existing at the time the document was prepared and do not take into account any subsequent changes. In preparing the document, Stantec did not verify information supplied to it by others. Any use which a third party makes of this document is the responsibility of such third party. Such third party agrees that Stantec shall not be responsible for costs or damages of any kind, if any, suffered by it or any other third party as a result of decisions made or actions taken based on this document. Prepared by Prepared by (signature) (signature) Frank Smith, MA Meaghan Rivard, MA, CAHP Cultural Heritage Specialist Cultural Heritage Specialist Reviewed by Approved by (signature) (signature) Colin Varley, MA, RPA Alex Blasko, B.Sc. Senior Associate Project Manager This page intentionally left blank Stouffville Rail Corridor Grade Separations Project – Cultural Heritage Report: Existing Conditions and Preliminary Impact Assessment Executive Summary Under the Stoufville Grade Separation project, Metrolinx proposes to accommodate the expansion of the Stoufville Rail Corridor through grade separations or road closure at seven traffic crossings, for the purpose of reducing traffic conflicts, enhancing on-time performance and improving operational flexibility/reliability. This project is following the Transit Project Assessment Process (TPAP) as defined in Ontario Regulation 231/08 under the Environmental Assessment Act. Cultural heritage is identified as a matter of provincial importance under the TPAP. Under the TPAP, the proponent is required to consider whether its proposed transit project could have potential negative impact on a matter of provincial importance as defined under Ontario Regulation 231/08 or on a constitutionally protected Aboriginal or treaty right. Metrolinx, as a prescribed public body under Ontario Regulation 157/10, is required to follow the Standards and Guidelines for the Conservation of Provincial Heritage Properties, prepared under Section 25.2 of the Ontario Heritage Act, when making any decisions affecting cultural heritage resources on lands under their ownership or control. In 2018, Stantec was retained by Metrolinx to conduct an assessment of built heritage resources and cultural heritage landscapes for the Stouffville Rail Corridor Grade Separations Project (the Project) located in the City of Toronto and City of Markham, Regional Municipality of York, Ontario. A Cultural Heritage Report: Existing Conditions and Preliminary Impact Assessment (Cultural Heritage Report) was undertaken to understand and describe the existing conditions within and adjacent to the Project Footprint, identify known and potential built heritage resources and cultural heritage landscapes, make a preliminary assessment of potential impacts, and provide mitigation options to address these impacts. No potential built heritage resources or cultural heritage landscapes were identified within the Cultural Heritage Study Area. Given that no potential built heritage resources or cultural heritage landscapes were identified, no impact assessment or recommendations are required. Therefore, no further cultural heritage studies are required for the Cultural Heritage Study Areas in accordance with Project requirements. The Executive Summary highlights key points from the report only; for complete information and findings, the reader should examine the complete report. i This page intentionally left blank Stouffville Rail Corridor Grade Separations Project – Cultural Heritage Report: Existing Conditions and Preliminary Impact Assessment Table of Contents Executive Summary ....................................................................................................... i Project Personnel .......................................................................................................... v Abbreviations ............................................................................................................... vi 1.0 Introduction ...................................................................................................... 1.1 1.1 Project Overview ............................................................................................... 1.1 1.1.1 Study Purpose and Objectives .......................................................... 1.5 1.2 Study Areas ....................................................................................................... 1.6 2.0 Methodology .................................................................................................... 2.1 2.1 Regulatory Requirements .................................................................................. 2.1 2.2 Screening Methodology ..................................................................................... 2.3 3.0 Existing Conditions ......................................................................................... 3.1 3.1 Background and Historical Research ................................................................ 3.1 3.1.1 Denison Street and Kennedy Road—Township of Markham ............ 3.2 3.1.2 Passmore Avenue, McNicoll Avenue, Huntingwood Drive, Havendale Road and Progress Avenue—Township of Scarborough ...................................................................................... 3.7 3.2 Government and Agency Data Requests ........................................................ 3.21 3.3 Identification of Known and Potential Built Heritage Resources and Cultural Heritage Landscapes ......................................................................... 3.22 4.0 Preliminary Impact Assessment .................................................................... 4.1 4.1 Description of Proposed Undertaking ................................................................ 4.1 4.2 Identification of Preliminary Potential Project Specific Impacts.......................... 4.1 5.0 Recommendations .......................................................................................... 5.1 6.0 References ....................................................................................................... 6.1 iii Stouffville Rail Corridor Grade Separations Project – Cultural Heritage Report: Existing Conditions and Preliminary Impact Assessment List of Figures Figure 1.1: GO Transit Networks .............................................................................. 1.1 Figure 1.2: Project Location ...................................................................................... 1.3 Figure 1.3: Cultural Heritage Study Areas - Denison Street ...................................... 1.9 Figure 1.4: Cultural Heritage Study Areas - Kennedy Road .................................... 1.11 Figure 1.5: Cultural Heritage Study Areas - Passmore Avenue .............................. 1.13 Figure 1.6: Cultural Heritage Study Areas - McNicoll Avenue ................................. 1.15 Figure 1.7: Cultural Heritage Study Areas - Huntingwood Drive ............................. 1.17 Figure 1.8: Cultural Heritage Study Areas - Havendale Road ................................. 1.19 Figure 1.9: Cultural Heritage Study Areas - Progress Avenue ................................ 1.21 Figure 3.1: 1860 County of York ............................................................................. 3.13 Figure 3.2: 1878 County of York, Townships of Scarborough and Markham .......... 3.15 Figure 3.3: Cultural Heritage Study Areas 1961 ..................................................... 3.17 Figure 3.4: Cultural Heritage Study Areas 1974 ..................................................... 3.19 Figure 3.5: Gap Analysis - Denison Street .............................................................. 3.27 Figure 3.6: Gap Analysis - Kennedy Street ............................................................. 3.29 Figure 3.7: Gap Analysis - McNicoll Avenue ........................................................... 3.31 Figure 4.1: Denison Street Grade Separation ........................................................... 4.3 Figure 4.2: Kennedy Road Grade Separation ........................................................... 4.5 Figure 4.3: Passmore Avenue Grade Separation ..................................................... 4.7 Figure 4.4: McNicoll Avenue Grade Separation ........................................................ 4.9 Figure 4.5: Huntingwood Drive Grade Separation .................................................. 4.11 Figure 4.6: Havendale Road Multi-Use Crossing – Bridge Option .......................... 4.13 Figure 4.7: Havendale