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1780242-R-Rev0-Nat Env Existing Conditions-06Nov2018

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REPORT Natural Environment Existing Conditions Report Water and Wastewater Master Study Whitchurch-Stouffville Submitted to: Chris Campbell GM BluePlan 3300 Highway 7, Suite 402 Toronto, Ontario L4K 4M3 Submitted by: Golder 6925 Century Avenue, Suite #100 Mississauga, Ontario, L5N 7K2 Canada +1 905 567 4444 1780242 May 2018 May 2018 1780242 Distribution List PDF - GM BluePlan PDF - Golder May 2018 1780242 Table of Contents 1.0 INTRODUCTION ............................................................................................................................................. 1 1.1 Study Area Description ........................................................................................................................ 1 2.0 METHODS ....................................................................................................................................................... 2 2.1 Background Review ............................................................................................................................. 2 2.2 Species at Risk Screening ................................................................................................................... 3 3.0 EXISTING CONDITIONS ................................................................................................................................ 3 3.1 Regional Context and Ecosystem Setting ............................................................................................ 3 3.2 Significant Natural Features ................................................................................................................. 4 3.2.1 Habitat of Endangered or Threatened Species .............................................................................. 4 3.2.2 Wetlands ......................................................................................................................................... 4 3.2.3 Fish Habitat ..................................................................................................................................... 5 3.2.4 Significant Woodlands .................................................................................................................... 5 3.2.5 Significant Valleylands .................................................................................................................... 6 3.2.6 Significant Areas of Natural or Scientific Interest (ANSIs) .............................................................. 6 3.2.7 Significant Wildlife Habitat .............................................................................................................. 7 3.2.8 Environmentally Significant Areas .................................................................................................. 8 3.3 North Stouffville Focus Area ................................................................................................................ 8 4.0 NATURAL ENVIRONMENT PLANNING POLICIES ...................................................................................... 9 4.1 Greenbelt Plan ..................................................................................................................................... 9 4.2 Oak Ridges Moraine Conservation Plan (ORMCP) ........................................................................... 11 4.3 Town of Whitchurch-Stouffville Official Plan ...................................................................................... 12 4.4 Region of York Official Plan ............................................................................................................... 14 5.0 SUMMARY AND RECOMMENDATIONS .................................................................................................... 14 6.0 LIMITATIONS ................................................................................................................................................ 15 May 2018 1780242 TABLES Table 1: Minimum Area of Influence and Minimum Vegetation Protection Zone ................................................... 13 FIGURES Figure 1: Natural Heritage Features Figure 2: Natural Heritage Features North West Figure 3: Natural Heritage Features North East Figure 4: Natural Heritage South East Figure 5: Natural Heritage Features South West Figure 6: North Stouffville Focus Area Figure 7: Conservation Authority Jurisdictions APPENDICES Appendix A Species at Risk Screening May 2018 1780242 1.0 INTRODUCTION Golder Associates Ltd. (Golder) was retained by GM BluePlan (BluePlan) to undertake a Natural Environment Assessment to support the Water and Wastewater (W&WW) Master Plan (the Project) for the Town of Whitchurch-Stouffville (the Town), Regional Municipality of York, Ontario (the study area) (Figure 1). The goal of the Project is to determine the W&WW infrastructure requirements to support the population and employment growth forecasts for the Town. The Project will also identify preferred servicing strategies and system improvements for water distribution and wastewater conveyance. Through the identification and description of the features and functions, potential constraints and opportunities are highlighted. This report will be used to support the high level review and evaluation of servicing strategies, alignments, environmental crossings and infrastructure siting. The initial phase of this study culminated in the preparation of this Natural Environment Existing Conditions Report. The Report identifies and describes key features and functions of the natural environment. The purpose of this report is to identify the known significant natural features (i.e., existing conditions) in the study area that may pose a constraint to the Project. The natural features considered in this report are those listed in the Provincial Policy Statement (MMAH 2014), Greenbelt Plan (MMAH 2017a), the Oak Ridges Moraine Conservation Plan (ORMCP) (MMAH 2017b), the Region of York Official Plan (OP) (York 2010) and the Town’s OP (Whitchurch-Stouffville 2000). These natural features include: Significant wetlands and coastal wetlands; Significant woodlands; Significant valleylands; Significant wildlife habitat (SWH); Significant areas of natural and scientific interest (ANSI); Significant ecological areas; Fish habitat; and Habitat of endangered and threatened species. 1.1 Study Area Description The study area is an urban/rural community covering approximately 220 square kilometers (km2) in the central portion of the Region of York (Figure 1). Agriculture is the dominant land use in the study area, intermixed with recreational, residential and limited commercial/industrial developments. The community of Stouffville, in the southeast corner of the study area, is the largest settlement area. Smaller communities scattered through the study area include Ballantrae, Musselman Lake, Gormley, Preston Lake, Vandorf and Wesley Corners. 1 May 2018 1780242 2.0 METHODS 2.1 Background Review The investigation of existing conditions in the study area included a background information search and literature review to gather data about the local area and provide context for the evaluation of the natural features. A number of resources were used, including: Natural Heritage Information Centre (NHIC) database, maintained by the Ministry of Natural Resources and Forestry (MNRF) (NHIC 2018); Land Information Ontario (LIO) geospatial data (MNRF 2018a); Species at Risk Public Registry (ECCC 2018); Species at Risk in Ontario (SARO) List (MNRF 2018b); Breeding Bird Atlas of Ontario (OBBA) (Cadman et al. 2007); Atlas of the Mammals of Ontario (Dobbyn 1994); Ontario Reptile and Amphibian Atlas (Ontario Nature 2018); Bat Conservation International (BCI) range maps (BCI 2018); Ontario Butterfly Atlas (Jones et al. 2018); eBird species maps (eBird 2012); Fish ON-Line Ontario (MNRF 2015a); and Ballantrae-Musselman Lake/Highway 48 Corridor Study (MSH 2012); Rouge River Watershed Plan (TRCA 2007); Watershed Plan for Duffins Creek and Carruthers Creek (TRCA 2003); Black River Subwatershed Plan (LSRCA 2010a); East Holland River Subwatershed Plan (LSRCA 2010b); Town of Whitchurch-Stouffville Official Plan (2000); Region of York Official Plan (2010); The Living City Policies (TRCA 2014); and Aerial imagery. To develop an understanding of the drainage patterns, ecological communities and potential natural heritage features in the study area, MNRF LIO data were used to create base layer mapping for the study area. A geographic query of the NHIC database was conducted to identify element occurrences of any natural heritage features, including wetlands, ANSIs, life science sites, rare vegetation communities, rare (i.e., species ranked S1-S3 by NHIC), threatened or endangered species and other natural heritage features within the study area. 2 May 2018 1780242 2.2 Species at Risk Screening SAR considered for this report include those species listed in the provincial Endangered Species Act (ESA) (Ontario 2007) and the federal Species at Risk Act (SARA) (Canada 2002). An assessment was conducted to determine which SAR had potential habitat in the study area. A screening of all SAR which have the potential to be found in the vicinity of the study area was conducted first as a desktop exercise using the sources listed in Section 2.1. Species with ranges overlapping the study area, or recent occurrence records in the vicinity, were screened by comparing their habitat requirements to habitat conditions in the study area. The potential for the species to
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