ARBORIST REPORT FOR DEVELOPMENT APPLICATIONS

Transcription

1 ARBORIST REPORT FOR DEVELOPMENT APPLICATIONS City Planning / Parks, Forestry & Recreation The purpose of this form is to acquire preliminary information respecting trees on private and City property, in order for staff to assess the applicability of City of Toronto tree protection by-laws. City of Toronto by-laws respecting trees provide for the protection of trees situated on both private and City property. Retention and appropriate protection of existing trees is expected to be considered when developing plans and whenever possible, buildings, driveways and utilities are to be diverted around trees. Therefore, you are required to complete Section 1 of this form if there are trees in any of the five categories noted below. If you have additional trees, please list them on a separate sheet. The General Manager of Parks, For estry and Recreation may request a Tree Guarantee Deposit to guarantee the planting or protection of trees. It is the applicant's responsibility to advise the General Manager of Parks, Forestry and Recreation that the trees have been planted in accordance with approved plans and/or tree protection zones have been created in accordance with approved plans. It is also the applicant's responsibility to submit a written request to the General Manager for the refund of a Tree Guarantee Deposit, 2 years after the completion of all construction activity and/or 2 years after tree planting. Section 2 of the form is to be signed only if there are no trees in any of the 5 categories. Categories 1. Trees with diameters of 30 cm or more, situated on private property on the subject site. 2. Trees with diameters of 30 cm or more, situated on private property, within 6 m of the subject site. 3. Trees of all diameters situated on City owned parkland within 6 m of the subject site. 4. On lands designated under City of Toronto Municipal Code, Chapter 658, Ravine and Natural Feature Protection, trees of all diameters situated within 10 metres of any construction activity. 5. Trees of all diameters situated within the City road allowance adjacent to the subject site. Municipal Address of Property: 307 Sherbourne Street Development Application No: SECTION 1 - ARBORIST REPORT Tree Service Company: ArborFront Consulting Phone No: (or name of Certified / Registered Arborist or Forester) Date of Inspection: April 6, 2015 IMPORTANT: Please read the following before completing the remaining portions of the form. Note: A stand-alone inventory of trees on the site is not considered adequate information. In addition to identifying the species, size, condition and category of trees involved with this application, the Arborist is required to provide a tree preservation plan whichprovides recommendations for tree protection and preservation measures for all trees that are to be retained. The Arborist must have access to relevant site, construction and grading plans in order to determine the potential impact of construction activities on trees and to recommend required tree protection measures. The '' will be considered incomplete unless the required tree preservation plan is submitted with this arborist report form. Please refer to "Building Toronto Together: A Development Guide" for additional information regarding completion of an arborist report. Tree Categories Tree Species DBH** Condition*** (see description above) No. * (cm) (good, fair, poor) Check ( ) appropriate category THORNLESS HONEY LOCUST 35 FAIR 2 TREE-OF-HEAVEN 57 FAIR 3 TREE-OF-HEAVEN 65 FAIR * The location of all trees must be accurately indicated by number on the site plan for the proposed construction/ development ** All diameter measurements must be taken at 1.4 m above ground level. Measurements must be accurate. *** Please notify City of Toronto, Urban Forestry Services at 311 of any dead or hazardous tree on City owned property. Inaccurate information and/or omitted information may delay the processing of your application. If it is determined that you require a permit to injure or destroy a tree, you will be advised and additional information will be required at that time. Goran Olbina #ON-1249A Name of Certified/ Registered Arborist or Forester Signature Date (Please print) SECTION 2 DECLARATION If there are no trees in any of the above mentioned categories 1 to 5, please complete the information requested below and sign the following declaration. I / We do hereby declare that there are no trees in respect of this development application which meet the criteria outlined in the above listed categories 1 to 5. Name of authorized Agent or Owner Signature Date (Please print) June 2010

2 7212 Danton Promenade Mississauga, ON L5N 5C4 Tel: Mr. Peter Heyblom thincdesign 1 Atlantic Avenue, Unit 201 Toronto, ON M6K 3E7 Dear Mr. Heyblom: ARBORIST REPORT Date: Tree assessments conducted on April 6, Introduction: ArborFront Consulting was retained by thincdesign on behalf of Oben Flats Inc. to prepare an arborist report on the property municipally known as 307 Sherbourne Street, in the City of Toronto, Ontario. For site location refer to Key Map on page 5. Nature of Work: Proposed new high-rise residential development. Objective: To inventory and assess the condition of By-law regulated trees involved with the proposed project, and determine if they will be suitable for preservation. The report outlines the tree preservation requirements and mitigation measures for trees deemed suitable for preservation that are not in conflict with the proposed development. Trees recommended for removal will also be identified. Recommendations will be given based on tree condition, analysis of the existing site conditions, and the proposed construction works. Site Conditions: The site is vacant and there was no construction activity on site. There are no By-law regulated private trees on the subject property. There are three (3) trees involved with this project that are regulated under the Private Tree By-law (Article III, Chapter 813) and all are within 6 meters of the property line. There are no City of Toronto trees in the boulevard along Sherbourne Street or Gerrard Street East adjacent to the subject site. The three By-law regulated trees consist of one (1) 35 cm DBH Thornless Honey Locust (Gleditsia triacanthos var. inermis) in the front yard of 201 Gerrard Street East, and two (2) Tree-of-heaven (Ailanthus altissima) at size 57 cm and 65 cm DBH respectively in the backyard of 299 Sherbourne Street. There are also several other smaller caliper trees (not By-law regulated) along the east and southern property lines of the subject site that are not part of our study in this report. The notable non-by-law regulated tree species encountered include Manitoba Maple (Acer negundo), Siberian Elm (Ulmus pumila), and Tree-of-heaven (Ailanthus altissima). Some of these border non-by-law regulated trees and the two (2) By-law regulated Tree-of-heaven may have shared ownership or may be 100% owned by the neighbouring private properties. The species encountered bordering the subject site with the exception of the Thornless Honey Locust are volunteer non-native and undesirable trees indicative of a highly disturbed urban site. Most of these trees have grown in or near the edge of existing asphalt paving. Tree locations are shown on attached Tree Survey Plan (refer to page 8). Refer to the attached photographs of each tree and site conditions on pages 6-7 for reference. go@arborfront.com Website:

3 Page 2 Federally or Provincially Protected Trees: There were no tree species encountered on site or within our scope of work that were listed under the Canadian Species At Risk Act, 2002 or the Ontario Endangered Species Act, S.O Tree Inventory: Tree No. Species DBH (cm), 1.4m from ground Condition Category 1 Thornless Honey Locust Gleditsia triacanthos var. inermis 2 Tree-ofheaven Ailanthus altissima 3 Tree-ofheaven Ailanthus altissima ~35 Canopy diameter is 10m. This tree is in fair health and structural condition. The tree is located in a planting bed with existing hard surface paving (lockstone walkway) between it and the subject site. There are some minor broken branches in the canopy. Overhead utility lines are passing through the canopy. Based on its current condition this tree is suitable for preservation. ~57 Canopy diameter is 13m. This 2-stem tree is in fair health and structural condition. There is some decay in a vertical crack approximately 4.0m long from the trunk base up the main stem. This is due to the reaction wood and growth of the tree encompassing a portion of a metal pipe at grade. There is 15-20% deadwood in the canopy with some interfering branches. Overhead utility lines are passing through the canopy. Based on its current condition this tree is suitable for preservation. ~65 Canopy diameter is 12m. This tree is in fair health and structural condition. There is 15-20% deadwood in the canopy with a detached branch approximately 10cm in diameter hanging in the canopy. Overhead utility lines are passing through the canopy. Based on its current condition this tree is suitable for preservation ~ denotes estimated size (DBH) due to inaccessibility on adjacent private property.

4 Page 3 Recommendations: The following recommendations are based on tree condition, analysis of the existing site conditions, and the proposed construction works. Specifically, we reviewed the proposed Draft Site Plan, Floor Plans and Section/Elevations, latest revision date February 12, 2015 prepared by Superkul Inc. Architect. Tree #1 (Thornless Honey Locust) is recommended for preservation. Since there is an existing ornamental metal fence along the property line that will remain intact, and the tree is beyond the minimum tree protection zone (TPZ) distance of 2.4m no additional tree protection is required on the subject site. It is recommended proper construction and siltation fencing is installed on the subject property prior to commencement of construction activities. We recommend the parts of the canopy which is overhanging the subject site be pruned using acceptable arboriculture practices by a qualified tree care professional to provide adequate clearance for construction. Trees #2 and #3 (Tree-of-heaven) will both be in conflict with the proposed development with a minimum of 50% or more of their root systems and supporting buttress roots being removed as a result of proposed excavation along the property line. It is recommended both these trees be removed to facilitate the proposed development. Conclusions: Provided the recommendations outlined above are implemented, it is my opinion that tree #1 should not be adversely affected by the proposed construction. Trees #2 and #3 are both recommended for removal due to conflict with the proposed development and they cannot be protected. A permit will be required to remove these two (2) trees. Permission from the property owner of 299 Sherbourne Street will also have to be obtained for these two border trees. It will also be necessary to remove all the smaller caliper trees and vegetation that are not Bylaw regulated along the east and southern property lines. Prior to construction, it will be necessary to notify the neighbouring property owners of the proposed development and obtain permission to remove any trees and vegetation that may be affected by the proposed development as they may be shared or solely owned by the neighbouring property owner. Limitations of Assessment: The tree assessments presented in this report have been made using accepted arboricultural techniques by visual examination of all above ground parts of the tree(s). Unless noted otherwise, trees were not cored, probed or climbed and there was no detailed inspection of the root crown involving excavation. While reasonable efforts have been made to assess trees in this report, there is no guarantee offered, or implied that these trees or any of their parts may have problems or deficiencies that may arise in the future. Trees are living organisms and their health and vigour change over time and are subject to changes in site and weather conditions. As such trees should be re-assessed periodically. The assessments made in this report are valid at the time of inspection. The determination of ownership of any subject tree(s) is the responsibility of the landowner(s). Any civil or common-law issues, which may exist between property owners with respect to trees, must be resolved by the owner(s). Any recommendation to remove or retain trees does not grant permission to encroach in any manner onto adjacent private properties.

5 Page 4 Should you have any questions, please do not hesitate to contact me. Yours truly, ARBORFRONT CONSULTING Goran Olbina, OALA, ISA, BHA ISA Certified Arborist #ON-1249A Butternut Health Assessor

6 Page 5 Key Map Site location shown with red push pin. North is straight up, and map is N.T.S. Source: Toronto Maps

7 Page 6 Tree #1 Tree #2 showing vertical crack up trunk Trees #2 (left) and Tree #3 (right) Looking at Siberian Elm at south west corner of site

8 Page 7 Looking south from Gerrard Street East at east side of subject site Looking east from Sherbourne Street along southern property line of subject site

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