Tree Inventory and Preservation Plan Report 2220 Marine Drive Oakville, Ontario

Transcription

1 Tree Inventory and Preservation Plan Report 2220 Marine Drive Oakville, Ontario prepared for Ontario Inc. & Ontario Inc. (2220 Marine Drive Intensification) c/o GWL Realty Advisors Inc. 330 University Avenue, Suite 330 Toronto, ON M5G 1R8 prepared by KUNTZ FORESTRY CONSULTING INC Project P1408

2 Ontario Inc. & Ontario Inc. (2220 Marine Drive Intensification) c/o GWL Realty Advisors Inc. Table of Contents 1.0 INTRODUCTION METHODOLOGY EXISTING SITE CONDITIONS INDIVIDUAL TREE RESOURCES PROPOSED WORKS DISCUSSION DEVELOPMENT IMPACTS/TREE REMOVALS TREE PRESERVATION TREE VALUATION SUMMARY AND RECOMMENDATIONS... 5 Kuntz Forestry Consulting Inc. P1408 1

3 Ontario Inc. & Ontario Inc. (2220 Marine Drive Intensification) c/o GWL Realty Advisors Inc. 1.0 Introduction Kuntz Forestry Consulting Inc. was retained by Ontario Inc. & Ontario Inc. (2220 Marine Drive Intensification) c/o GWL Realty Advisors Inc. to complete a Tree Inventory and Preservation Plan in support of a proposed development at 2220 Marine Drive in Oakville, Ontario. The subject area is located southwest of Lakeshore Road West and Third Line. The work plan for this tree preservation study included the following: Prepare inventory of tree resources over 15cm DBH occurring on subject property and within 6m of the subject property; Evaluate potential tree saving opportunities based on proposed development plans; and Document the findings in a Tree Inventory and Preservation Plan Report. All tree resources included in the inventory were visually assessed for condition utilizing the following parameters: Tree # - number assigned to tree that corresponds to Figure 1. Species - common and botanical names provided in the inventory table. DBH - diameter (centimetres) at breast height, measured at 1.4 m above the ground. Condition - condition of tree considering trunk integrity, crown structure, and crown vigour. Condition ratings include poor (P), fair (F) and good (G). Dripline distance from the stem to the edge of the live crown, and Comments - additional relevant detail. The results of the evaluation are provided below. 2.0 Methodology Trees measuring over 15cm DBH on the subject property and within six metres of the subject property were identified in the tree inventory. Trees were located using the topographic survey provided or aerial photo interpretation and estimations made in the field. Trees inventoried were numbered Tree polygons (groups of trees) were identified with the prefix "P". Tree locations are shown on Figure 1. Refer to Table 1 for the results of the tree inventory. 3.0 Existing Site Conditions The subject property is currently comprised of an existing 19-storey brick apartment building with above and underground parking and landscaped areas. Tree resources exist in the form of landscape trees, naturally occurring trees and cedar hedgerows. Refer to Figure 1 for the existing site conditions. 4.0 Individual Tree Resources The tree inventory was conducted on 6 December The inventory documented a total of 54 trees and one tree polygon. Refer to Table 1 for the full tree inventory and Figure 1 for the location of trees reported in the tree inventory. Kuntz Forestry Consulting Inc. P1408 2

4 Ontario Inc. & Ontario Inc. (2220 Marine Drive Intensification) c/o GWL Realty Advisors Inc. Tree resources were comprised of Blue Spruce (Picea pungens), Austrian Pine (Pinus nigra), Silver Maple (Acer saccharinum), Honey Locust cultivar (Gleditsia triacanthos x), Sugar Maple (Acer saccharum), Largetooth Aspen (Populus grandidentata), Red Maple (Acer rubrum), Norway Maple (Acer platanoides), Eastern White Cedar (Thuja occidentalis), Fir species (Abies sp.), White Birch (Betula papyrifera), Japanese Maple (Acer palmatum), White Ash (Fraxinus americana), European Beech (Fagus sylvatica), Russian Olive (Elaeagnus angustifolia), Manitoba Maple (Acer negundo), and Siberian Elm (Ulmus pumila). 5.0 Proposed Works The proposed development includes the construction of townhouse units, relocation of the existing driveway and addition of parking spaces. Refer to Figure 1 for the existing conditions and proposed site plan. 6.0 Discussion The following sections provide a discussion and analysis of impacts, tree removal requirements, and tree preservation relative to the proposed development and existing conditions. 6.1 Development Impacts/Tree Removals The removal of 9 trees, including Trees 1 to 8 and 55, will be required to accommodate the proposed development. The removal of Trees 1 to 8 will be required to accommodate the proposed townhouses and terraces. The removal of Tree 55 will be required to accommodate additional parking spaces. Tree 45 is a dead/dying Ash tree that is recommended for removal. Trees 1 to 8, 45 and 55 are greater than 20 cm DBH are protected by the Town of Oakville's Tree Protection By-law A permit is required for the removal of five or more trees between cm DBH, and all trees greater than 76 cm DBH, per calendar year. No permit fee is required for Tree 45. Refer to Figure 1 for the locations of the proposed tree removals. 6.2 Tree Preservation Preservation of all remaining trees will be possible provided tree protection fencing is erected as shown on Figure 1. Trees 22 and 23 are located adjacent to existing impermeable surfaces (asphalt). The existing asphalt within the minimum Tree Protection Zones (mtpzs) of these trees should be removed by hand. The area should be re-paved as soon as possible following removal of the existing asphalt to minimize compaction within the mtpzs of these trees. Trees 13 to 21 are located behind a concrete retaining wall. Tree protection fencing has not been proposed for these trees. It is not anticipated that these trees will be impacted by the proposed works assuming the concrete retaining wall is to remain and all works, material and fill remain on the subject property side of the retaining wall. Kuntz Forestry Consulting Inc. P1408 3

5 Ontario Inc. & Ontario Inc. (2220 Marine Drive Intensification) c/o GWL Realty Advisors Inc. Trees 12, 24 to 44, 46 to 53 and tree polygon P54 are located away from the proposed works. Tree protection fencing is not required for these trees due to their distance away from the proposed development. Tree protection fencing should consist of plywood hoarding on a wood frame of 2 x 4 s for Trees 1, 22 and 23. Refer to Figure 1 for the location of required tree preservation fencing, the fence detail and signage, and preservation plan notes. 6.3 Tree Valuation A tree valuation was calculated for all Town-owned trees (Tree 9). Refer to Appendix A for the individual tree valuation calculations. The total appraised value of Tree 9 is $1,969. Refer to the following section for the methodology used to calculate the appraised value of trees. Methodology The tree valuation spreadsheet is provided in Appendix A. The value was calculated using the Trunk Formula Method. This method is described in the Guide to Plant Appraisal, 9 th Edition (2000). The Ontario Supplement (2003) provides regionally relevant data pertaining to species ratings, and basic costs for trees. Trunk Formula Method This method is used for trees that are larger than what is commonly available for transplant from a nursery. The Tree Cost of the replacement tree is derived from a survey of nurseries. For this project, three nurseries were consulted for current costs of 90mm trees including installation. An average cost was calculated and this value was used in the valuation. The Basic Tree Cost is calculated using the following equation: Basic Tree Cost = Installed Tree Cost + (Unit Tree Cost X Appraised Tree Trunk Increase) To determine the Basic Tree Cost, the method calculates the increase in cost due to size by multiplying the Unit Tree Cost by the difference in cross sectional area (at 1.4m) between the appraised tree and the replacement tree (Appraised Tree Trunk Increase). For multi-stemmed trees, a single DBH was derived based on the cross-sectional areas of the stems. In Ontario, the Unit Tree Cost has been set at $6.51/cm 2 (Ontario Supplement, 2003). The Installed Tree Cost is added to the calculated cost for the difference in size to give the Basic Tree Cost. The Appraised Value is calculated using the following equation: Appraised Value = Basic Tree Cost x Species Rating x Condition Rating X Location Rating The Basic Tree Cost is multiplied by the species, condition and location ratings to give the Appraised Value. Species ratings are provided in the Ontario Supplement (2003) to the Guide to Plant Appraisal, 9 th Edition (2000). Location ratings are calculated according to the methods Kuntz Forestry Consulting Inc. P1408 4

6 Ontario Inc. & Ontario Inc. (2220 Marine Drive Intensification) c/o GWL Realty Advisors Inc. outlined in the guide. Condition ratings were calculated based on the assessed condition of the trees on the site. 7.0 Summary and Recommendations Kuntz Forestry Consulting Inc. was retained by Ontario Inc. & Ontario Inc. (2220 Marine Drive Intensification) c/o GWL Realty Advisors Inc. to complete a Tree Inventory and Preservation Plan in support of a proposed development at 2220 Marine Drive in Oakville, Ontario. A tree inventory was conducted and reviewed in the context of the proposed site plan. The findings of the study indicate a total of 54 trees and one tree polygon on and within 6m of the subject property. The removal of 9 trees will be required to accommodate the proposed development. All remaining trees can be saved provided appropriate tree protection measures are installed prior to the proposed works. The following recommendations are suggested to minimize impacts to trees identified for preservation. Refer to Figure 1 for additional tree preservation notes and the Town of Oakville s Tree Protection Barriers Schedule 1. Tree protection barriers and fencing should be erected at locations prescribed on Figure 1. Tree protection measures will have to be implemented prior to demolition to ensure the trees identified for preservation are not impacted by the proposed works. No construction activity including surface treatments, excavations of any kind, storage of materials or vehicles, unless specifically outlined above, is permitted within the area identified on Figure 1 as a tree protection zone (TPZ) at anytime during or after construction. Branches and roots that extend past prescribed tree protection zones that require pruning must be pruned by a qualified Arborist or other tree professional. All pruning of tree roots and branches must be in accordance with good arboricultural standards. Site visits, pre, during, and post construction are recommended by either a certified consulting arborist (I.S.A.) or registered professional forester (R.P.F.) to ensure proper utilization of tree protection barriers. Trees should also be inspected for damage incurred during construction to ensure appropriate pruning or other mitigation measures are implemented. Respectfully Submitted, Kuntz Forestry Consulting Inc. Amy Choi Amy Choi, B.Sc.(Env.), M.Sc.F ISA Certified Arborist #ON-1609A Kuntz Forestry Consulting Inc. P1408 5

7 Ontario Inc. & Ontario Inc. (2220 Marine Drive Intensification) c/o GWL Realty Advisors Inc. References Guide for Plant Appraisal, 9 th Edition, Council of Landscape and Tree Appraisers. International Society of Arboriculture, Champaign, Illinois. 143 pp. Ontario Supplement to the Guide for Plant Appraisal- 8 th Edition, ISA Ontario. International Society of Arboriculture, Champaign, Illinois. 26 pp. Updated Kuntz Forestry Consulting Inc. P1408 6

8 Ontario Inc. & Ontario Inc. (2220 Marine Drive Intensification) c/o GWL Realty Advisors Inc. Table 1. Tree Inventory Location: 2220 Marine Drive, Oakville Date: 6 December 2016_ Surveyors: AC Tree # Common Name Scientific Name DBH TI CS CV CDB DL S. mtpz Comments /Remove Ownership 1 Blue Spruce Picea pungens 29 G G G Pruning wounds(l) from raised crown 2 Blue Spruce Picea pungens 45 FG G G 4 3 Raised root mound, lean(l) towards northwest Remove 3 Blue Spruce Picea pungens 40.5 FG G G 3 3 Lean(L), pruning wounds(l) from raised crown Remove 4 Austrian Pine Pinus nigra 39.5 FG F PF 4 3 Pruning wounds(m), poor form(l), diplodia blight(m), codominant Remove at 4m 5 Silver Maple Acer saccharinum 68.5 F FG FG Girdling root(h), vertical scaffod limbs with included bark(l), Remove asymmetrical crown(l) 6 Blue Spruce Picea pungens 27.5 F PF F Missing leader, pruning wounds(l) from raised crown, Remove curved stem 7 Sugar Maple Acer saccharum 50.5 F F FG 5 3 Girdling root(l), stem wound(l) with rot, vertical scaffold limbs Remove with included bark(h) 8 Honey Locust cultivar Gleditsia triacanthos x 36.5 FG FG FG 5 3 Witches broom(l), pruning wounds(l) with rot(l) Remove 9 Largetooth Aspen Populus grandidentata 49 F F F 8 3 Lean(M), stem wound(l) at base, co-dominant at 1.2m, pruning Town wounds(l) 10 Largetooth Aspen Populus grandidentata 42,16 F F F 6 3 Union at base, 1 stem removed with rot(m), sweep(m), pruning wounds(m), vertical scaffold Shared limbs with included bark(m) 11 Largetooth Aspen Populus grandidentata 30.5,53 F F PF Union at 0.25m, lean(l-m), pruning wounds(m), dead Shared branches(l) 12 Red Maple Acer rubrum ~35 FG F F 4 3 Epicormic branches(l), union at 2m with included bark(l), pruning wounds(l) due to hydrolines, Neighbouring asymmetrical crown(m) 13 Largetooth Aspen Populus grandidentata 40 F F F 7 3 Bowed(M), co-dominant at 4m Neighbouring 14 Norway Maple Acer platanoides 26 F F F Swelling at 1.4m, poor form(m), co-dominant at 3m Neighbouring 15 Largetooth Aspen Populus grandidentata 41 FG F F 5 3 Dead branches(m), vertical scaffold limbs with included bark(h) Neighbouring Kuntz Forestry Consulting Inc. P1408 7

9 Ontario Inc. & Ontario Inc. (2220 Marine Drive Intensification) c/o GWL Realty Advisors Inc. 16 Norway Maple Acer platanoides ~45 F FG FG 8 3 Exposed roots(l), co-dominant at 2m with included bark(h), fused Neighbouring branch, branch wound(h) 17 Norway Maple Acer platanoides ~28 F FG FG Union at 3m with multiple branch attachments and included Neighbouring bark(m) 18 Blue Spruce Picea pungens ~5 G G G Neighbouring 19 Eastern White Cedar Thuja occidentalis ~5 FG FG FG Stem wound(l) 20 Sugar Maple Acer saccharum ~24 FG FG FG Small stem falre, seam(l), stem wound(l), co-dominant at 2.5m with included bark(l), asymmetrical crown(l) 21 Fir species Abies sp. ~5 G G G Crabapple Malus sp F G G Cankers(M) 23 Crabapple Malus sp F G G Cankers(M) 24 Norway Maple Acer platanoides ~35,36 FG F FG 6 3 Two trees, broken branches(m), curved stems Shared 25 Fir species Abies sp. ~13 FG G G Bowed(M) 26 Fir species Abies sp, ~13 FG G G Bowed(M) 27 Fir species Abies sp. ~13 G G G Blue Spruce Picea pungens 25.5 FG G G Lean(L), asymmetrical crown(l) 29 Blue Spruce Picea pungens 27.5 FG G G Curved stem, lean(l) 30 Austrian Pine Pinus nigra 41 FG F PF Diplodia blight(l0, growth deficit(m) on northwest side, top of crown dead 31 Austrian Pine Pinus nigra 41 FG FG FG 4 3 Lean(L), sapsucker damage(l) 32 Blue Spruce Picea pungens 28 FG G G Curved stem 33 Blue Spruce Picea pungens 27 G G G White Birch Betula papyrifera 15,15,10,14 F FG F Union at base with included bark(m), epicormic branches(h) 35 Norway Maple Acer platanoides 30 FG FG F Pruning wounds(m) with wetwood, curved stem 36 Norway Maple Acer platanoides 26.5 FG F F Curved stem, asymmetrical crown(m) Shared 37 Norway Maple Acer platanoides 17.5 F FG F Small stem flare, lean(l), crooks(l) Shared 38 Norway Maple Acer platanoides 34.5 FG FG FG 6 3 Lean(L), asymmetrical crown(l) Shared 39 Norway Maple Acer platanoides 24 FG FG FG Crooks(L), broken branches(l) 40 Norway Maple Acer platanoides 44,56 F FG F Girdling roots(h), co-dominant at 1m with included bark(h) and wetwood, lean(l), epicormic branches(m) 41 Largetooth Aspen Populus grandidentata 19 FG G G Curved stem 42 Largetooth Aspen Populus grandidentata 22,12.5 F FG FG Co-dominant at 1.2m with included bark(l), curved stem Kuntz Forestry Consulting Inc. P1408 8

10 Ontario Inc. & Ontario Inc. (2220 Marine Drive Intensification) c/o GWL Realty Advisors Inc. 43 Japanese Maple Acer palmatum 24.5,27 F F PF Norway Maple Acer platanoides 47 FG FG FG White Ash Fraxinus americana ~40,28 P P P Norway Maple Acer platanoides 67.5 F FG F European Beech Fagus sylvatica 79.5 FG G FG Norway Maple Acer platanoides 45.5 F FG FG Norway Maple Acer platanoides 44 F F F Norway Maple Acer platanoides 40 F F FG Norway Maple Acer platanoides 49 FG FG F Norway Maple Acer platanoides 43 F F F Russian Olive Elaeagnus angustifolia 23.5,40 PF F F 5 3 Manitoba Maple Acer negundo 22 F F F P54 Manitoba Maple Acer negundo 17,19.5 F F F Siberian Elm Ulmus pumila 23 FG FG FG END #N/A Union at 0.1m with included bark(h), dead branches(h), curved stem Lean(L), exposed roots(l), asymmetrical crown(l) Possibly dead, co-dominant at 0.25m with included bark(h), exposed roots(m) Girdling root(h), lean(m), pruning wounds(l), co-dominant at 3m Included sign(m), stem wound(l), dead branches(l) Girdling root(m), co-dominant at 2m with included bark(l), pruning wounds(l), lean(m) Girdling roots(m), exposed roots(m), lean(l), rot at base(m) Lean(M), asymmetrical crown(m), girdling root(m) Exposed roots(m), dead and broken branches(m) Exposed roots(m), burls(m), lean(m) Lean(M), co-dominant at 1m with included bark(h), stem wound(m), epicormic branches(l) Epicormic branches(l), lean(l), growth deficit(l) Union at base, lea(l), epicormic branches(m), coppice growth(m) Pruning wounds(m), growth deficit(l), vertical scaffold limbs with included bark(l), multiple branch attachments with included bark(m) Remove Remove Shared Neighbouring Neighbouring Shared Neighbouring Codes DBH 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) S. mtpz TPZ based on Town of Oakville's Tree Protection During Construction Standard minimum Tree Protection Zone (Prcedure EN-TRE ) from base of tree ~ = estimate; (L) = light; (M) = moderate; (H) = heavy Kuntz Forestry Consulting Inc. P1408 9

11 Ontario Inc. & Ontario Inc. (2220 Marine Drive Intensification) c/o GWL Realty Advisors Inc. Appendix A. Tree Valuation APPRAISED AREA OF APPRAISED TA INCREASE INSTALLED BASIC TRUNK REPLACE- TREE TRUNK X COST TREE Species Species Condition Condition Location FINAL AREA MENT TREE INCREASE $6.51/cm2 $ COST RATING VALUE RATING VALUE RATING VALUE Tree # Common Name Scientific Name DBH OC (cm 2 ) (cm 2 ) (TA Increase) ($) $ % $ % $ % $ 1 Largetooth Aspen Populus grandidentata 49.0 F $12,086 $ $12, $5, $2, $1,969 Total: $ 1,969 Kuntz Forestry Consulting Inc. P

12 Tree Inventory Tree Preservation LEGEND Refer to Table 1 of report dated for complete tree inventory information. All trees greater than 15 cm DBH on and within six metres of the subject property were included in the inventory. Trees were located by topographic survey or aerial imagery. Tree Removals The removal of 9 trees will be required to accommodate the proposed works. Tree 45 is a dead/dying Ash tree and is recommended for removal. Required tree removals are indicated with RED labels. Preservation of all remaining tree resources will be possible with appropriate tree protection measures. Trees identified for preservation are indicated with GREEN labels. Required Tree Preservation Fencing is indicated in MAGENTA and approximate dripline of trees is shown with GREEN circles. Refer to Tree Protection Plan Notes for preservation details. Tree Label (RED) removal required Surveyed Coniferous Tree Required Tree Preservation Fencing minimum Tree Protection Zone (mtpz), for planning purposes Approximate Dripline of Tree Tree Label (GREEN) preservation recommended Surveyed Deciduous Tree TREE PROTECTION PLAN NOTES Prior to site disturbance the owner must confirm that no migratory birds are making use of the site for nesting. The owner must ensure that the works are in conformance with the Migratory Bird Convention Act and that no migratory bird nests will be impacted by the proposed work. It is the applicants' responsibility to discuss potential tree injury of trees on shared property lines with their neighbours. Should such trees be injured to the point of instability or death the applicant may be held responsible for removal and such issues would be dealt with in civil court or through negotiation. The applicant would be required to replace such trees to the satisfaction of the Town of Oakville. TREE PROTECTION ZONE: No construction activity including grade changes, surface treatments or excavations of any kind is permitted within the area identified on the Tree Protection Plan or Site Plan as a Tree Protection Zone (TPZ). No root cutting is permitted. No storage of materials or fill is permitted within the TPZ. No movement or storage of vehicles or equipment is permitted within the TPZ. Grade changes are not permitted within established TPZ. The area(s) identified as a TPZ must remain undisturbed at all times. TREE PROTECTION BARRIERS: For City-owned Trees: Tree protection barriers for trees situated on the City road allowance where visibility must be maintained, can be 1.2m (4ft.) high and consist of chain link, or orange plastic web snow fencing on a 2 x 4 wood frame. All supports and bracing used to secure the barrier should be located outside the TPZ. All supports and bracing should minimize damage to roots outside the TPZ. Where some fill or excavate has to be temporarily located near a tree protection barrier, plywood must be used to ensure no material enters the TPZ. If the TPZ needs to be reduced to facilitate construction access, the tree protection barrier must be maintained at a lesser distance and the exposed TPZ protected with plywood and wood chips. This must first be approved by the Town of Oakville. For trees on private property situated on or adjacent to construction sites: Tree protection barriers must be installed around trees to be protected using plywood clad hoarding or an equivalent approved by the Town of Oakville. All supports and bracing to safely secure the barrier should be outside the TPZ. All such supports and bracing should minimize damage to roots outside the TPZ. General Note: Prior to the commencement of any site activity the tree protection barriers specified on this plan must be installed and written notice provided to the Town of Oakville. Established tree protection zones must not be used as construction access, storage or staging areas. The tree protection barriers must remain in effective condition until all site activities including landscaping are complete. Written notice must be provided to the Town of Oakville prior to the removal of the tree protection barriers. ARBORICULTURAL WORK: Any roots or branches which extend beyond the TPZ indicated on this plan which require pruning, must be pruned by a qualified Arborist or other tree professional as approved by the Town of Oakville. All pruning of tree roots and branches must be in accordance with good arboricultural standards. Roots located outside the TPZ that have received approval from the Town of Oakville to be pruned must first be exposed by hand digging or by using a low pressure hydro vac method. This will allow a proper pruning cut and minimize tearing of the roots. The Arborist/tree professional retained to carry out crown or root pruning must contact the Town of Oakville no less than 48 hours prior to conducting any specified work. No. Issue/Revisions Date By 1 Report Submission 7 Dec 16 AC 2 Report Revision 5 April 17 AC Base Data: KRCMAR Surveyors Ltd. (topo), RAW Design (site plan) Client Ontario Inc. & Ontario Inc. c/o GWL Realty Advisors Inc. Property 2220 Marine Drive Oakville, Ontario Existing Conditions, Proposed Site Plan Tree Inventory & Preservation Plan Project Date Scale P December :500 Figure 1