Schedule B Municipal Class Environmental Assessment – Project File German Mills Settlers Park Sanitary Infrastructure Protection Project
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SCHEDULE B MUNICIPAL CLASS ENVIRONMENTAL ASSESSMENT – PROJECT FILE GERMAN MILLS SETTLERS PARK SANITARY INFRASTRUCTURE PROTECTION PROJECT Contact: Phil Wolfraim, C.E.T. Project Manager, Engineering Projects Restoration & Infrastructure Division Toronto and Region Conservation Authority 9755 Canada Company Avenue, Vaughan, ON, L4H 0A3 [email protected] EXECUTIVE SUMMARY Toronto and Region Conservation Authority (TRCA) continues to work towards promoting healthy rivers and shorelines, protection of greenspaces and biodiversity, and sustainable communities to improve people’s lives within our growing region. The Region of York Environmental Services and TRCA Engineering Projects collectively operate the Integrated Infrastructure Protection Works Program to monitor, design and implement remedial erosion control works to protect at risk Region of York infrastructure. The Leslie Collector sewer has been identified to be at risk of exposure from natural creek erosion and migration at several locations along German Mills Creek. The study area is located within German Mills Settlers Park, in the City of Markham and commences approximately 660 metres south of John Street. The study area includes Leslie Collector maintenance holes MH6 to MH10 that corresponds with infrastructure erosion hazard Sites I-152, P-060, P-062, P-065, P-068 and I-151. The German Mills Settlers Park Sanitary Infrastructure Protection Project is being completed in accordance with a Schedule B Municipal Water and Wastewater Class Environmental Assessment (MCEA). The focus of this study is to assess the level of risk to infrastructure and the environment, provide preliminary design alternatives, and proceed through the MCEA. As required under the Schedule B MCEA planning process, a public information session has been held over the course of the study with input being sought from any interested agencies, community members and First Nations groups. All comments received have been considered during the planning and design process. The completed Project File will be submitted to the Ontario Ministry of the Environment, Conservation and Parks (MECP) for review and approval, as required under the MCEA process. Public comments may also be provided at this time. Following the thirty (30) day public review period and the successful resolution of any concerns received during the review period, TRCA intends to commence detailed design development of the preferred solution and obtain all necessary approvals to proceed to the implementation phase. ii Contents 1 INTRODUCTION ................................................................................................................................................. 1 1.1 BACKGROUND ............................................................................................................................................................................................. 1 1.2 ENVIRONMENTAL ASSESSMENT PROCESS ......................................................................................................................................... 3 1.3 PLANNING & POLICY DOCUMENTS ...................................................................................................................................................... 4 Provincial Policy Statement 2014, Under the Planning Act..................................................................................................... 4 City of Markham Official Plan (April 2018 Consolidation) ........................................................................................................ 4 Ontario Regulation 166/06 – Development, Interference with Wetlands, and Alterations to Shorelines and Watercourses .......................................................................................................................................................................................................... 5 TRCA’s Living City’s Policies (2014) & Associated Planning and Developmental Procedural Manual (2008) .......... 5 Endangered Species Act (2007) ....................................................................................................................................................... 6 Migratory Bird Convention Act (1994) ........................................................................................................................................... 6 2 PROBLEM STATEMENT .................................................................................................................................... 6 2.1 PROBLEM DEFINITION ............................................................................................................................................................................... 6 2.2 PURPOSE OF PROJECT .............................................................................................................................................................................. 6 2.3 PROJECT OBJECTIVES ................................................................................................................................................................................ 6 3 GENERAL DESCRIPTION OF THE STUDY AREA ............................................................................................ 7 4 EXISTING CONDITIONS .................................................................................................................................... 8 4.1 EXISTING EROSION HAZARDS ................................................................................................................................................................ 8 High Priority Site I-152 ........................................................................................................................................................................ 8 High Priority Site P-060 .................................................................................................................................................................... 11 High Priority Site P-068 .................................................................................................................................................................... 11 Low Priority Sites P-062, P-065, I-151 .......................................................................................................................................... 14 Other Erosion Hazards ..................................................................................................................................................................... 16 4.2 PHYSICAL ENVIRONMENT ...................................................................................................................................................................... 16 Sabiston Landfill ................................................................................................................................................................................ 16 Air Quality, Dust and Noise ............................................................................................................................................................. 17 Source Water Protection ................................................................................................................................................................. 18 Surface Water ...................................................................................................................................................................................... 19 Groundwater ....................................................................................................................................................................................... 19 4.3 NATURAL ENVIRONMENT ...................................................................................................................................................................... 20 Vegetation & Flora ............................................................................................................................................................................. 20 Herptofauna ........................................................................................................................................................................................ 21 Birds ....................................................................................................................................................................................................... 21 Mammals .............................................................................................................................................................................................. 22 Aquatic Habitat & Fish Community ............................................................................................................................................. 22 Climate Change Implications ......................................................................................................................................................... 24 4.4 CULTURAL ENVIRONMENT .................................................................................................................................................................... 25 4.5 SOCIO-CULTURAL ENVIRONMENT ...................................................................................................................................................... 25 4.6 TECHNICAL ENVIRONMENT ..................................................................................................................................................................