Tree Inventory and Preservation Plan Report 427 Butler Street Niagara-on-the-Lake, ON

Transcription

1 Tree Inventory and Preservation Plan Report 427 Butler Street Niagara-on-the-Lake, ON Prepared For: Visco Holdings Limited 30 Duke Street St. Catharines, ON L2R 5W5 Prepared By: 5290 Windermere Drive, Burlington ON L7L 3M March 2018 Project P123

2 Introduction Jackson Arboriculture Inc. was retained by Visco Holdings Limited to complete a Tree Inventory and Preservation Plan report in support of a development application for a property situated at 427 Butler Street in Niagara-on-the-Lake, Ontario. Methodology The following work plan was utilized during the completion of this study: Prepare field mapping (overlay topographic survey/site plan/aerial photography); Complete a site visit to collect tree inventory information for all trees 15 cm in diameter and larger situated on subject property, on neighbouring property within 6 m of the subject site and in the road allowance; Data entry, mapping and completion of a preservation planning analysis for trees included in the tree inventory; and, Document the findings in a Tree Inventory and Preservation Plan report. Tree Inventory The tree inventory was completed on the 23 rd of January All trees included in the inventory were visually assessed for condition utilizing the following parameters: Tree #: A number assigned to each tree correlating to the tree inventory and Figure 1. Species: Common and scientific species names. DBH: Diameter of the tree stem, measured at 1.4 m from the ground. Condition: The health of the tree considering trunk integrity, crown structure and crown vigour; each rated as poor, fair or good. Crown Dieback: The percentage of the crown that no longer supports foliage. Dripline: The distance, in meters, from the trunk to the tips of the live crown, and Comments: Any additional notes relevant to the tree or site conditions. The trees included in the inventory are identified with numbers Trees were located by topographic survey provided and estimations made on site. Existing Conditions The subject property is comprised of a single storey residential dwelling and a small detached garage. The property is bound by residential development to the northeast and southwest, commercial development to the northwest and Butler Street to the southeast. The tree inventory documented a total of 42 trees situated on subject property, within the road allowance and on neighbouring property within 6 m of the property boundaries. Of those 42 trees, 12 appear to be situated on subject property, 11 appear to be situated in the road Jackson Arboriculture Inc. 1

3 allowance and 19 appear to be situated on neighbouring property. The trees included in the inventory appear to be comprised of naturally occurring trees and some landscape plantings. Trees included in the inventory are comprised of Apple species (Malus sp.), Hybrid Butternut (Juglans x.), Curly Willow (Juglans matsudana), Cherry species (Prunus sp.), Manitoba Maple (Acer negundo), Green Ash ( ), Black Walnut (Juglans nigra), White Mulberry (Morus alba), Red Pine (Pinus resinosa), Siberian Elm (Ulmus pumila), White Pine (Pinus strobus), White Birch (Betula papyrifera) and Norway Maple (Acer platanoides). Refer to Table 1 for the complete tree inventory and Figure 1 for tree locations. Proposed Development The proposed development is comprised of a severing the property in half and construction a detached residential dwelling on each lot. Access to the lots will be provided from Butler Street. Discussion and Analysis A preservation planning analysis was completed on each tree individually considering the impacts from the proposed development and many other factors including, but not limited to, tree condition, species, DBH and the existing site conditions. The impacts from the proposed development will occur where tree roots conflict with construction machinery during earthworks, foundation excavation and servicing. During the preservation planning analysis the dripline distance was utilized to determine the potential impacts to each tree. Where appreciable encroachment is required within the dripline, tree removal will likely be required. Tree Removal The removal of Trees 1-11, 17, 29, 33, 37 and will be required to accommodate the proposed development including grading, servicing and construction. Trees 24 and 25 do not conflict with the proposed development, however, are identified for removal due to their condition. Tree 24 is a Manitoba Maple which is leaning towards the proposed development. Given the frequency with which leaning Manitoba Maple fail Tree 24 should be removed. Tree 25 is an Ash Tree infested with the Emerald Ash Borer and should also be removed prior to the commencement of construction. Tree Preservation The preservation of Trees 12-16, 18-23, 26-28, 30, 31, 32, 34, 35, 36 and 38 be possible with appropriate tree protection measures. Tree protection measures will have to be implemented prior to the commencement of earthworks/grading to ensure that no trees identified for preservation are adversely impacted by the proposed development. Jackson Arboriculture Inc. 2

4 Encroachment within the driplines of Trees 30, 31, 32, 33 and 36 will be required to accommodate the proposed development. Excavation adjacent to the tree protection fence must be supervised by a Certified Arborist. Any roots that are exposed must be pruned by a Certified Arborist in accordance with acceptable arboricultural practice. Tree protection fence must be installed at the dripline for trees identified for preservation, unless stated otherwise. Refer to Figure 1 for the location of required tree protection fence, the tree protection fence detail and for further tree protection plan notes. Summary and Recommendations Jackson Arboriculture Inc. was retained by Visco Holdings Limited to complete a Tree Inventory and Preservation Plan report in support of a development application for a property situated at 427 Butler Street in Niagara-on-the-Lake, Ontario. A tree inventory was conducted and reviewed in the context of the proposed development plan. The findings of the study indicate a total of 42 trees situated on subject property, on neighbouring property within 6 m and within the road allowance. The removal of 19 trees will be required to accommodate the proposed development and 2 more trees require removal due to their condition. The following recommendations are made to ensure trees identified for preservation are not impacted by the proposed development: Refer to Figure 1 for the location of prescribed tree protection fencing, the tree protection fence detail and further tree protection plan notes. Tree protection fence must be installed prior to the demolition phase. Once tree protection fence has been installed it must not be moved, relocated or altered in any way (unless repairing fallen fence etc.) for the duration of the construction period. No intrusion into an area identified on Figure 1 as a tree preservation zone (TPZ) is allowed at anytime during construction. No storage of machinery, construction debris, materials, waste or any other items is allowed within a TPZ. Any tree branches (and roots) that conflict with proposed development must be pruned by a Certified Arborist in accordance with acceptable arboricultural practice. Tree protection fencing should be inspected prior to, during, and after construction is complete to ensure that tree protection fence remains intact and in good repair throughout the stages of development. Jackson Arboriculture Inc. 3

5 Respectfully submitted, Jackson Arboriculture Inc. Jeremy Jackson, H.B.Sc., ISA Certified Arborist #ON-1089A GIS Analyst Jackson Arboriculture Inc. 4

6 Limitations of Assessment It is our policy to attach the following limitations of assessment to ensure that the client, municipalities and agencies are fully aware of what is technically and professionally realistic when visually assessing and retaining trees. The assessment of the trees presented in this report has been made using accepted arboricultural techniques. These include a visual examination of the above ground parts of each tree for structural defects, scars, external indications of decay such as fungal fruiting bodies, evidence of attack by insects, discoloured foliage, the condition of any visible root structures, the degree and direction of any lean, the general condition of the trees and the surrounding site, and the proximity of property and people. Notwithstanding the recommendations and conclusions made in this report, it must be realized that trees are living organisms and their health and vigour constantly change. They are not immune to changes in site conditions, or seasonal variations in the weather conditions, including severe storms with high-speed winds. While reasonable efforts have been made to ensure that the trees recommended for retention are healthy no guarantees are offered, or implied, that these trees, or any parts of them, will remain standing. It is both professionally and practically impossible to predict with absolute certainty the behaviour of any single tree of group of trees or their component parts in al circumstances. Inevitably a standing tree will always pose some risk. Most trees have the potential for failure under adverse weather conditions, and the risk can only be eliminated if the tree is removed. Although every effort has been made to ensure that this assessment is reasonably accurate, trees should be re-assessed periodically. The assessment presented in this report is valid at the time of the inspection. Jackson Arboriculture Inc. 5

7 Table 1. Tree Inventory Location: 427 Butler St. NOL Date: 23 Jan Surveyors: JJJ Tree # Common Name Scientific Name DBH TI CS CV DL CDB Comments Action 1 Apple species Malus sp. 39 F F F 4 20 One dead stem, dry rot at flare 2 Hybrid Butternut Juglans x 29, 23, 26 G G FG 7 10 Union at 1 m 3 Curly Willow Salix matsudana 37, 16, 19, 24 FG G G 5 Union at ground 4 Hybrid Butternut Juglans x 45 G G FG Apple species Malus sp. 20 G G G 4 Epicormic branching 6 Cherry species Prunus sp. 28 G G G 4 7 Manitoba Maple Acer negundo 30 FG G G 5 Lean towards neighbours house 8 Apple species Malus sp. 28 G FG FG 4 10 Understory 9 Green Ash EAB infestation, epicormic 19 F F F 3 branching 10 Black Walnut Juglans nigra 42 G G G 6 11 White Mulberry Morus alba 19, 17, 17 FG FG G 4 Union at ground, heavy sweep 12 Red Pine Pinus resinosa ~45 G G G 4 Preserve 13 Red Pine Pinus resinosa ~28 G G G 3 Preserve 14 Red Pine Pinus resinosa ~18 G G G 3 Preserve 15 Red Pine Pinus resinosa ~30 G G G 3 Preserve 16 Red Pine Pinus resinosa ~20 FG PF PF 3 50 Top of crown dead Preserve 17 Green Ash 69 G F F 10 EAB infestation 18 Cherry species Prunus sp. ~15 G G G 3 Preserve 19 Red Pine Pinus resinosa ~30 G G G 4 Preserve 20 Red Pine Pinus resinosa ~20 G G G 3 Preserve 21 Red Pine Pinus resinosa ~30 G G G 4 Preserve 22 Red Pine Pinus resinosa ~30 G FG G 3 Union at 3 m Preserve 23 Red Pine Pinus resinosa ~25 G G G 3 Lean towards subject property Preserve 24 Manitoba Maple Acer negundo 24 FG G G 4 Moderate lean over subject property 25 Green Ash 20 G FG FG 3 EAB infestation 26 Green Ash ~45 G FG FG 7 EAB infestation Preserve 27 Manitoba Maple Acer negundo 20 G FG G 4 Crook Preserve 28 Green Ash ~30 FG FG F 3 15 EAB infestation Preserve 29 Siberian Elm Ulmus pumila 34 FG G G 5 Stem wound - growing into eavestrough 30 Green Ash Likely EAB infestation, union ~55, 50 FG F F 7 20 at 0.2 m, pruning required Preserve 31 White Pine Pinus strobus 28 FG FG G 4 Crooks, understory Preserve 32 White Pine Pinus strobus 35 G G G 6 Preserve 33 Green Ash 61 G F F 9 30 EAB infestation 34 White Pine Pinus strobus ~30 G G G 4 Preserve 35 White Pine Pinus strobus ~35, 35 FG G G 6 Union at ground Preserve 36 White Birch Betula papyrifera ~20, 25 FG FG G 4 Union at ground Preserve 37 Hybrid Butternut Juglans x 59 G G G 8 Union at 1.5 m 38 White Spruce Picea glauca ~20 G G G 3 Preserve 39 Curly Willow Salix matsudana 20, 12 FG FG FG 3 10 Union at ground Jackson Arboriculture Inc. 6

8 Tree # Common Name Scientific Name DBH TI CS CV DL CDB Comments Action 40 Norway Maple Acer platanoides 15, 14 FG F G 4 Union at ground, top cut at 4 m for hydro 41 Cherry species Prunus sp. 10 G G G 3 Light lean towards road 42 Norway Maple Acer platanoides 10 F F G 3 Top cut at 3 m for hydro DBH Codes Diameter at Breast Height (cm) TI Trunk Integrity (G, F, P) CS Crown Structure (G, F, P) CV Crown Vigor (G, F, P) CDB Crown Die Back (%) DL Dripline (m) EAB Emerald Ash Borer ~ = estimate Jackson Arboriculture Inc. 7

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