TREE CONSERVATION REPORT

Transcription

1 TREE CONSERVATION REORT LACE D ORLEANS DRIVE, ORLEANS ONTARIO repared JANUARY, 2018 repared by MICHELLE EETERS ISA CERTIFIED ARBORIST ON-2129A 368 OXFORD STREET EAST, LONDON ONTARIO, CANA DA N6A 1V7 E: RON@RKLA.CA W: RKLA.CA T: F:

2 TABLE OF CONTENTS Introduction... 2 Assignment... 3 Tree reservation/removal Analysis... 3 Recommendations... 3 Tree Removal/Retention Recommendations... 5 Executive Summary... 9 Disclaimer... 9 Appendix A Tree rotection Zone Fence Details Appendix B Tree reservation lan T a g e 1

3 INTRODUCTION roject Information Site address: lace D Orleans Drive, Orleans ON K1C 7K3 roperty owner: Choice roperties REIT head office: 22 St Claire Ave E, Suite 500, Toronto ON, M4T 2S5 phone number TCR author: Ron Koudys Landscape Architects Inc, 368 Oxford St E, London ON, N6A 1V7 phone number Michelle eeters - certified arborist ON-2129A with field work carried out by Edward Malindzak B.Sc., CAN-CISEC of arsons. The project site is within an existing, commercial plaza anchored with a large No Frills grocery store. The two proposed buildings will be located on the NE and SE ends of the property near lace D Orleans Drive. On January 11 th, 2018, an inventory and assessment of the existing trees and vegetation on the above noted project site was undertaken with respect to tree health and preservation. This task was completed with consideration for the construction of two proposed buildings near lace D Orleans Drive within the existing parking lot. Existing vegetation on the site and within 3 meters of the extent of SA include trees and shrubs associated with the existing parking lot, as well as vegetation along the Queensway off ramp to the north of the site. RO. BLDG B RO. BLDG C roject site context NTS Tree species observed on site include Norway Maple, Honeylocust, Amur Maple, Norway Spruce and Austrian ine. No rare, endangered or unusual species were observed on site. a g e 2

4 ASSIGNMENT Our firm was retained by Choice roperties REIT to undertake an assessment of the existing trees and vegetation located within and along the perimeter of the new building site to help establish a preservation strategy and a removals plan for the existing vegetation. This report outlines specific vegetation to preserve; to remove; and recommendations for pre-, during, and post-construction. TREE RESERVATION/REMOVAL ANALYSIS Trees were assessed using the standard ISA evaluation criteria based upon tree vigour data, a detailed site-examination, and a review of the requirements for the construction of two proposed buildings. The site plan was prepared and supplied by Turner Fleischer Architects Inc.. Engineering drawings were prepared and supplied by arsons. The survey was prepared and supplied by Annis, O Sullivan, Vollebekk Ltd. Trees data was collected in the field by staff at arsons. See Drawing T-1 (appendix B) for tree locations and reference numbers. The proposed development and its required grading will impact the existing trees with respect to root and canopy zones. The following tree preservation measures should be implemented. No construction, stockpiling, or heavy equipment will be permitted beyond the construction limit (see Tree reservation Barrier Line on T-1). In this area, trees in poor condition that are to be removed should be felled carefully to minimize the impact to trees to be preserved (refer to pre-construction recommendations). The trees that are to be removed have been indicated by the appropriate symbol (refer to T-1). otential impacts on trees to be preserved may include: 1. hysical damage to canopy, foliage, trunks, and roots of trees to be retained. 2. Local moisture loss which may result from a decline in the water table during and after construction. 3. Contamination of the soil from chemicals. 4. Increased sun/wind exposure which could result in scald or windthrow. 5. Compaction of root zones resulting in stress and damage to the root structure. The successful survival of the trees to be preserved is largely dependent on adhering to the recommendations that follow. RECOMMENDATIONS These recommendations are designed to enhance the survival of trees to be preserved. While it is always desirable to retain as many trees as possible on a site, some trees, because they are in poor condition or are undesirable species, cannot be saved for safety, aesthetic, or sylvicultural reasons. a g e 3

5 There is no guarantee, however, that the trees to be preserved will not be impacted by the construction process. The following recommendations are supplied to ensure minimal impact on and to enhance the survival potential of the trees to be preserved: A) RE-CONSTRUCTION RECOMMENDATIONS 1. rior to tree removal operations, the limit of the removals will be clearly marked (i.e. all trees designated for removal are to be marked with spray paint). 2. Undertake a tree education program for all contractors and put in place enforceable penalties for any damage resulting from neglect. 3. rior to felling practices a 600mm deep trench shall be dug to facilitate the root pruning of retained trees. This will effectively separate the entwined roots so damage to the retained trees is limited. 4. Care should be taken during the felling operation to avoid damaging the branches, stems, trunks, and roots of the trees to be preserved. Where possible, all trees are to be felled towards the construction zone to minimize impacts on adjacent vegetation. 5. Stem damage to trees from skidding operations during the removal process should be avoided. Trunks of trees to be preserved near the construction zone should be wrapped with three layers of snow fencing to provide protection. 6. Heavy equipment should not be allowed within the drip line (limit of branches) of the trees to be preserved. 7. Broken branches on trees to be preserved should be cleanly cut by a qualified arborist/horticulturalist as soon as possible after the damage has occurred. Do not apply wound dressings to the cut areas. 8. Final site grading should ensure that surface water is discharged from the site and that the existing soil moisture conditions are maintained. 9. Some trees may be candidates for pre-construction root pruning to help reduce stress and prepare the tree for nearby construction activity. B) RECOMMENDATIONS RELATED TO THE CONSTRUCTION ROCESS 1. Temporary Tree rotection Barrier (see appendix A) is to be maintained at the critical root zone (CRZ) until all heavy construction work is complete. No movement of equipment or dumping of solvents, gasoline, etc. is permitted beyond this fence line. 2. Where high-quality specimens exist adjacent to areas subject to intensive construction activity, wooden cribbing (e.g. planks, plywood constructions) should be erected to protect their trunks from damage. 3. During the excavation process, roots that are severed and exposed should be hand pruned to leave a clean-cut surface. This will reduce the opportunity for pests or disease to enter through the wounds. Wound dressing may be used in this process. 4. If grade changes are required in areas adjacent to trees to be preserved, work should be done to minimize the impact on the trees. Tree wells, retaining walls, or other site features should be used. 5. Avoid machinery exhaust within tree preservation zone to deter canopy damage. 6. Avoid running above-ground wires and underground services near trees to be preserved. Avoid open trenching within the tree root zone. Utilize horizontal boring techniques to install utilities below root areas. 7. Regular monitoring of the site by the Landscape Architect will help to ensure proper procedures are followed and protection barriers are maintained. a g e 4

6 8. Signs, notices, and posters are not to be affixed to any tree on site at any time. C) OST-CONSTRUCTION REOMMENDATIONS 1. After construction, a qualified arborist/horticulturalist should deep root feed and prune all trees that were preserved near the construction zone. 2. Avoid discharging rain water leaders adjacent to retained trees. This may result in an overly moist environment which will cause the tree roots to rot. 3. After all work is completed, snow fences and other barriers should be removed. 4. A final review must be undertaken by the Landscape Architect to ensure that all mitigation measures as described above have been met. TREE REMOVAL/RETENTION RECOMMENDATIONS GENERAL INFORMATION SIZE HEALTH AND CONDITION RECOMMENDATION TREE# TREE SECIES DBH (cm) CANOY RADIUS (m) TRUNK INTEGRITY CANOY STRUCTURE CANOY VIGOUR FIELD NOTE COMMENTS 135 Acer platanoides 33 3 good good good healing wound at branch union, near Retail A 136 Acer platanoides 25 2 good good good near retail A, beyond extent of SA 137 Acer platanoides good good good near retail A, beyond extent of SA 138 Acer platanoides 7 2 good good fair 2 broken branches, near retail A, beyond extent of SA 139 Acer platanoides 25 2 good good fair broken branches, near retail A, beyond extent of SA 140 Acer platanoides poor good fair trunk damage, broken branches, near retail A, 141 Acer platanoides good poor good multi stem 4, poorly 142 Acer ginnala good fair good multi stem 5, poorly 143 Acer ginnala good fair good multi stem 3, poorly ROOSED ACTION (R=remove) (=preserve) RATIONALE a g e 5

7 144 Acer ginnala good good fair multi stem 9, poorly pruned, dead wood, adjacent to Queensway offramp, beyond extent of SA 145 icea abies 32 2 good good poor codominant leaders, deadwood, adjacent to 146 icea abies 26 2 good good fair significant dieback on both sides, adjacent to 147 icea abies good good fair significant dieback on both sides, adjacent to 148 Acer ginnala good fair good multi stem 4, poorly 149 Acer ginnala good good good multi stem 5, poorly 150 Acer ginnala good fair good multi stem 5, poorly 151 Acer ginnala good good good multi stem 7, poorly 152 icea abies good good poor dieback and browning, deadwood, adjacent to just 153 icea abies good good good poorly pruned, adjacent to just 154 icea abies good good good adjacent to Queensway offramp 155 icea abies good good good adjacent to Queensway offramp 156 icea abies good good good adjacent to Queensway offramp 157 Acer ginnala good fair good healed trunk wounds, minor broken branches R Construction of 158 icea abies 30 2 good good good R Construction of 159 Acer ginnala <10 2 good good good multi stem 10 R Construction of a g e 6

8 160 Acer ginnala < good good good multi stem 10 R Construction of 161 Acer ginnala <10 2 good good good multi stem 10 R Construction of 162 Acer ginnala <10 2 good good good multi stem 10 R Construction of 162B icea abies good good good R Construction of 163 Gleditsia 164 Gleditsia 164B Gleditsia 165 Gleditsia 166 Gleditsia 16 2 good good good excessive growth - needs pruning R Construction of good fair good top has been damaged R Construction of good good good top has been damaged R Construction of good good good 34 3 good good good 167 Acer platanoides 33 3 fair good fair trunk damage, dead leader, on slope 168 Gleditsia recommend removal of dead wood 18 2 good good good needs pruning, on slope recommend removal of dead wood 169 inus nigra 37 3 good good good on slope 170 inus nigra 30 3 good good good on slope 171 inus nigra 38 3 good good good on slope 172 Acer platanoides 27 3 good good good on slope 173 Acer platanoides 32 3 good good good on slope intentionally excluded - shrub, not tree 175 icea abies good good good R Construction of drive through lane for building C intentionally excluded - shrub, not tree 177 icea abies good good good 178 Gleditsia good good good R Construction of drive through lane and sidewalk reconfiguration 179 Gleditsia good good good R Construction of drive through lane and sidewalk reconfiguration a g e 7

9 180 Gleditsia good good good R Construction of drive through lane and sidewalk reconfiguration 181 Gleditsia 182 Gleditsia 183 Gleditsia 184 Gleditsia 185 Gleditsia 186 Gleditsia 187 Gleditsia 188 Gleditsia 189 Gleditsia 190 Gleditsia 29 3 good good good 34 3 good good good good good good R arking lot reconfiguration good good good R arking lot reconfiguration good good good good good good good good good good good good good good good good good good Health and Condition Assessment Details Good - tree displays less than 15% deficiency/defect within the given tree assessment criteria Fair - tree displays 15%-40% deficiendy/defect within the given tree assessment criteria oor - tree displays greater than 40% deficiendy/defect within the given tree assessment criteria a g e 8

10 EXECUTIVE SUMMARY It is our recommendation that a Tree reservation Barrier be erected and maintained as indicated on the tree preservation drawings T-1. Best efforts to locate the tree preservation fencing beyond the critical root zone (CRZ) (as determined by DBH x 10cm) have been made. Note that ten (10) of the trees (trees 154, 181, 182, and ) identified to be preserved have tree protection barriers located within their CRZ s. Notwithstanding, RKLA recommends preservation efforts as they are in good overall condition, are species known to be tolerant to stress/construction impacts, and contribute buffering and aesthetic qualities to the site. Removal of trees from the site is not permitted until written approval of this Tree Conservation Report is granted. A copy of this report must be available on site during tree removal, grading, construction, and any other site alteration activities. Inventory, Removals and lanting Summary # of trees identified and assessed in this report 56 # of trees to be removed due to proposed construction 16 # of trees to be preserved 40 # of proposed deciduous trees: 24 # of proposed large deciduous shrubs: 10 # of proposed coniferous trees: 6 DISCLAIMER Trees have been assessed using standard arboricultural techniques. This includes a visual examination of the above-grade parts of each tree to observe structural defects, scars, external indications of decay, evidence of insects, deterioration of foliage, general condition of the trees and their immediate habitat, and the proximity of targets, including people and property. None of the trees examined were dissected, cored, probed, or climbed, and detailed root crown examinations involving excavation were not undertaken. Trees are living organisms and their health and vigour changes over time, and are dependent on multiple factors. They are susceptible to changes in site conditions, such as recent development, and to seasonal variations in weather. Reasonable efforts have been made to ensure that the trees recommended for preservation are able to withstand changing site conditions; however, we cannot guarantee that the assessed trees or their parts will remain intact. It is both professionally and practically impossible to predict with certainty the health and structural capacity of any single tree or group of trees in all circumstances. A tree that remains standing will always pose a varying degree of risk in the presence of a target. All trees may fail provided that they are exposed to the necessary combinations of stresses. The risk for failure is only eliminated if the tree is removed. It is the recommendation of this report that trees be re-assessed periodically to determine ongoing levels of risk. The assessment presented in this report is valid only at the time of inspection. a g e 9

11 AENDIX A TREE ROTECTION ZONE FENCE DETAILS a g e 10

12 AENDIX B TREE RESERVATION LAN T-1 a g e 11

13 KEY MA NOTES: ART 1 ART 2 SUBJECT TO EASEMENT ART 3 GARDEN CENTRE SUBJECT TO EASEMENT EXISTING RETAIL A2 EXTENT OF SA ROOSED BUILDING B.1 EXISTING RETAIL A1 ROOSED BUILDING B ST IERRE STREET SUBJECT TO EASEMENT SUBJECT TO EASEMENT EXISTING RETAIL D EXTENT OF SA LEGEND 5 EXTENT OF SA 8 RESIDENTIAL ROOSED BUILDING C 6 9 TREE RESERVATION LAN ROCQUE STREET