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Tree Inventory Lincolnville Layover and GO Station Improvements IT-2017-EC-010: Environmental Project Report Addendum Appendix A7: Tree Inventory Lincolnville Layover and GO Station Improvements IT-2017-EC-010: Tree Inventory Plan October 9, 2018 File: 160950996 Prepared for: Metrolinx 20 Bay Street, 6th Floor Toronto, ON M5J 2W3 Prepared by: Stantec Consulting Ltd. 100-300 Hagey Boulevard Waterloo, ON N2L 0A4 Sign-off Sheet This document entitled Lincolnville Layover and Go Station Improvements LT-2017-EC- 010: Tree Inventory Plan was prepared by Stantec Consulting Ltd. (“Stantec”) for the account of Metrolinx (the “Client”), in support of an Environmental Assessment at 12902 and 12958 Tenth Line Whitchurch-Stouffville (the “Project”). In connection thereto, this document may be reviewed and used by the provincial and municipal government agencies participating in the permitting process in the normal course of their duties. Except as set forth in the previous sentence, any reliance on this document by any third party for any other purpose 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 published and do not take into account any subsequent changes. In preparing the document, Stantec did not verify information supplied to it by others. Any unauthorized 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 unauthorized use of this document. Prepared by (signature) Landon Black, OALA Landscape Architect, ISA Certified Arborist ON-1876A Reviewed by (signature) Jennifer Koskinen, HBESfcon, ISA ISA Certified Arborist ON-1234A Lincolnville Layover and GO Station Improvements IT-2017-EC-010: Tree Inventory Plan Table of Contents 1.0 INTRODUCTION ............................................................................................... 1.1 1.1 EXISTING SITE ................................................................................................. 1.1 1.2 PURPOSE OF REPORT ................................................................................... 1.1 2.0 METHODOLOGY .............................................................................................. 2.1 2.1 SITE REVIEW ................................................................................................... 2.1 2.2 JURISDICTIONAL SCAN .................................................................................. 2.1 2.2.1 Toronto and Region Conservation Authority ...................................... 2.1 2.2.2 Town of Whitchurch-Stouffville .......................................................... 2.1 2.2.3 Regional Municipality of York ............................................................ 2.2 2.2.4 Canadian Food Inspection Agency .................................................... 2.2 2.3 REPORT ........................................................................................................... 2.2 3.0 OBSERVATIONS AND RECOMMENDATIONS ............................................... 3.1 3.1 OBSERVATIONS .............................................................................................. 3.1 3.1.1 Tree Observations ............................................................................. 3.1 3.2 RECOMMENDATIONS ..................................................................................... 3.3 3.2.1 Onsite Tree Impacts .......................................................................... 3.3 3.2.2 Offsite Tree Impacts .......................................................................... 3.3 3.2.3 Regulatory Requirements .................................................................. 3.3 3.2.4 Tree Compensation Requirements .................................................... 3.3 4.0 DISCLAIMER .................................................................................................... 4.1 LIST OF APPENDICES APPENDIX A: TREE INVENTORY PLAN - DRAWINGS L-900 – L-905 Lincolnville Layover and Go Station Improvements LT-2017-EC-010: Tree Inventory Plan Introduction October 9, 2018 1.0 INTRODUCTION This 2018 Tree Inventory Plan addresses lands located on 12958 and 12902 Tenth Line, Whitchurch-Stouffville Ontario. The lands are proposed for the development of a new GO Station by Metrolinx. The proposed new facility will replace the existing Lincolnville GO Station located directly north of the proposed location. At the present, the property proposed for development contains two residential properties. Two residences are located on the subject property, both of which became vacant as of May 31, 2018. The Town of Whitchurch-Stouffville Official Plan designates this property as a ‘rural area’, and a ‘greenland area’. This property is zoned as ‘agriculture’ as per schedule 48 of the Town of Whitchurch-Stouffville 2017 zoning schedule. 1.1 EXISTING SITE The project site, which is located in the Town of Whitchurch-Stouffville, Regional Municipality of York, is an irregularly-shaped parcel. The site includes two properties; 12958 and 12902 10th Line. The north property 12958 was previously a residential property that is currently vacant, and the north property 12902 was a former garden centre and residence. The project site is bordered by Bethesda Sideroad to the north, 10th Line to the east, the Stouffville rail corridor to the west, and private land to the south. The subject property consists of meadow and includes a wetland and pond area. Existing structures remain on the property, and includes two houses, and approximately 20 abandoned buildings of green houses and sheds. The subject property contains extensive refuse areas, primarily old machines/equipment, barrels, wood, crates, skids and concrete blocks scattered through the meadow areas. During preliminary planning activities, it was determined that a small, unevaluated wetland was existing onsite. As a larger wetland, the Stouffville Wetland Complex, lies to the southwest of the project site, Metrolinx has engaged both the Toronto and Region Conservation Authority (TRCA) and the Ontario Ministry of Natural Resources and Forestry (MNRF) to evaluate the extent and significance of the wetland. 1.2 PURPOSE OF REPORT The Tree Inventory Plan has been developed to provide an inventory of existing trees, identify potential impacts to trees based on preliminary site design concepts, and provide recommendations to mitigate the impact to healthy trees during the detailed design process. This scope of work included a jurisdictional scan for relevant permit and regulatory requirements regarding any trees that could potentially be impacted by the proposed development. 1.1 Lincolnville Layover and Go Station Improvements LT-2017-EC-010: Tree Inventory Plan Methodology October 9, 2018 2.0 METHODOLOGY 2.1 SITE REVIEW The initial tree inventory and assessment was conducted by Jennifer Koskinen (HBESfcon, ISA Certified Arborist) and Landon Black (OALA, ISA Certified Arborist), on July 17th 2018. A second tree inventory and assessment was conducted by Landon Black (OALA, ISA Certified Arborist) and Stephanie Lapointe (BLA), on August 2nd 2018. The site assessment included a review of trees within the proposed limits of construction and trees located on adjacent property that could potentially be impacted by the design. There were minimal shrubs onsite, and shrubs predominately were isolated adjacent to the rail right-of-way. The project site was also reviewed for any rare or endangered tree species that would require additional protection and review. During the detailed inventory, trees were tagged with a numbered steel tree tag. Tree species, diameter at breast height (DBH) in centimetres, health condition, and dripline radius in metres were recorded for each tree. Vegetation Units were utilized for areas with woody vegetation where existing species and sizes were relatively homogenous throughout the unit. A general inventory was conducted for these units which included species present, approximate size, quantities, drip line and overall condition. The data was compiled into tables available in Appendix ‘A’, drawings L-904 and L-905. Where indicated on the plan, the location of each tree was identified by an Ontario Land Surveyor (OLS). Where trees were not surveyed by an OLS, locations of trees were approximated using high-resolution aerial imagery and field diagrams. The locations of the inventoried trees are indicated on the Tree Inventory Plan drawings, attached in Appendix ‘A’. 2.2 JURISDICTIONAL SCAN 2.2.1 Toronto and Region Conservation Authority The subject property is entirely outside of the TRCA regulated area. As such, no TRCA regulatory requirements or permitting processes are applicable to the project. 2.2.2 Town of Whitchurch-Stouffville The Town of Whitchurch-Stouffville has no by-laws which restrict the removal or injury of trees on private property. 2.1 Lincolnville Layover and Go Station Improvements LT-2017-EC-010: Tree Inventory Plan Methodology October 9, 2018 2.2.3 Regional Municipality of York The York Region Street Tree and Forest Preservation Guidelines (2016) extends protection to trees growing on Region owned lands, including rights-of-way. These
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