Report to Committee of the Whole Re: Rezoning and OCP Amendment (REZ 2023/01) 339 – 345 Island Highway

339, 341, 345 Island Highway View Royal, BC Construction Impact Assessment & Tree Management Plan

PREPARED FOR: Boardwalk REIT

PREPARED BY: Talmack Urban Forestry Consultants Ltd Noah Talbot – Consulting Arborist ISA Certified # PN-6822A Tree Risk Assessment Qualified

DATE OF ORIGINAL REPORT ISSUANCE: March 23, 2023

---

CONTENTS

1. INTRODUCTION ............................................................................................................................ 1
2. TREE INVENTORY METHODOLOGY ........................................................................................... 1
3. EXECUTIVE SUMMARY ................................................................................................................ 1
4. TREE INVENTORY DEFINITIONS ................................................................................................. 2
5. SITE INFORMATION & PROJECT UNDERSTANDING .............................................................. 19
6. FIELD OBSERVATIONS .............................................................................................................. 19
7. CONSTRUCTION IMPACT ASSESSMENT ................................................................................. 20 7.1. Retention and Removal of Municipal Trees .................................................................................................. 20 7.2. Retention and removal of onsite trees .......................................................................................................... 20 7.3. Retention and removal of offsite trees .......................................................................................................... 21
8. IMPACT MITIGATION .................................................................................................................. 21
9. DISCLOSURE STATEMENT ........................................................................................................ 24
10. IN CLOSING ................................................................................................................................. 25
11. REFERENCES ............................................................................................................................. 25

TABLES

Table 1. Tree Inventory ..................................................................................................................................................4-18

APPENDICES

Appendix A Tree Management Plan (T1) Appendix B Site Photographs Appendix C Hard Surface Above Tree Roots Detail

REVISION RECORD

---

1. INTRODUCTION

Talmack Urban Forestry Consultants Ltd. was asked to complete a tree inventory, construction impact assessment and management plan for the trees at the following proposed project:

• Site: 339, 341, 345 Island Highway
• Municipality: View Royal
• Client Name: Boardwalk REIT
• Dates of Site Visit(s): December 12 & 14, 2022
• Site Conditions: 3 urban lots, No ongoing construction activity
• Weather During Site Visit: Overcast

The purpose of this report is to address the tree inventory and arborist report requirements of the Town of View Royal Byalw No. 695. The construction impact assessment section of this report (section 8), is based on plans reviewed to date, including the Conceptual servicing plan – Feb. 15, 2023 (prepared by McElhanney Ltd.), and architectural site plan – March 20, 2023 (prepared by DHK Architects). At this time we have not reviewed a detailed landscape plan.

2. TREE INVENTORY METHODOLOGY

Numerated metal tags were used to identify onsite protected trees and trees located on municipal land. Note that all protected trees (per the definition of a tree in the TOVR Bylaw No. 1069) were inventoried. Trees located on neighbouring properties, within influencing distance of the subject site were not tagged. Each tree was visually examined on a limited visual assessment basis (level 1), in accordance with Tree Risk Assessment Qualification (TRAQ) methods (Dunster et al. 2017) and ISA Best Management Practices.

3. EXECUTIVE SUMMARY

Based on review of the Architectural site plan and civil concept plan provided, it is anticipated that 138 onsite trees will require removal to facilitate construction of the proposed apartment buildings and u/g parking structures. 32 onsite trees are located at the Southeast corner of the site, where they are possible for retention, provided that the proposed woodland trail is constructed using low impact methods, and the English Ivy is removed from the trunk and canopies of retained trees. Once a detailed design of the woodland trail is provided, we can prepare a detailed impact assessment and provide detailed mitigation recommendations for trail construction.

---

4. TREE INVENTORY DEFINITIONS

Tag: Tree identification number on a metal tag attached to tree with nail or wire, generally at eye level. Trees on municipal or neighboring properties are not tagged.

DBH: Diameter at breast height – diameter of trunk, measured in centimetres at 1.4m above ground level. For trees on a slope, it is taken at the average point between the high and low side of the slope. * Measured over ivy ~ Approximate due to inaccessibility or on neighbouring property

Dripline: Indicates the radius of the crown spread measured in metres to the dripline of the longest limbs.

Relative Tolerance Rating: Relative tolerance of the tree species to construction related impacts such as root pruning, crown pruning, soil compaction, hydrology changes, grade changes, and other soil disturbance. This rating does not take into account individual tree characteristics, such as health and vigour. Three ratings are assigned based on our knowledge and experience with the tree species: Poor (P), Moderate (M) or Good (G).

Critical Root Zone: A calculated radial measurement in metres from the trunk of the tree. It is the optimal size of tree protection zone and is calculated by multiplying the DBH of the tree by 10, 12 or 15 depending on the tree’s Relative Tolerance Rating. This methodology is based on the methodology used by Nelda Matheny and James R. Clark in their book “Trees and Development: A Technical Guide to Preservation of Trees During Land Development.”

• 15 x DBH = Poor Tolerance of Construction
• 12 x DBH = Moderate
• 10 x DBH = Good

To calculate the critical root zone, the DBH of multiple stems is considered the sum of 100% of the diameter of the largest stem and 60% of the diameter of the next two largest stems. It should be noted that these measures are solely mathematical calculations that do not consider factors such such as restricted root growth, limited soil volumes, age, crown spread, health, or structure (such as lean).

Health Condition:

• Poor - significant signs of visible stress and/or decline that threaten the long-term survival of the specimen
• Fair - signs of stress
• Good - no visible signs of significant stress and/or only minor aesthetic issues

Structural Condition:

• Poor - Structural defects that have been in place for a long period of time to the point that mitigation measures are limited
• Fair - Structural concerns that are possible to mitigate through pruning
• Good - No visible or only minor structural flaws that require no to very little pruning

Suitability ratings are described as follows:

Rating: Suitable.

• A tree with no visible or minor health or structural defects, is tolerant to changes to the growing environment and is a possible candidate for retention provided that the critical root zone can be adequately protected.

Rating: Conditional.

• A tree with good health but is a species with a poor tolerance to changes to its growing environment or has a structural defect(s) that would require that certain measures be implemented, in order to consider it suitable for retention (ie. retain with other codominant tree(s), structural pruning, mulching, supplementary watering, etc.)

Rating: Unsuitable.

• A tree with poor health, a major structural defect (that cannot be mitigated using ANSI A300 standards), or a species with a poor tolerance to construction impacts, and unlikely to survive long term (in the context of the proposed land use changes).

Retention Status:

• Remove - Not possible to retain given proposed construction plans
• Retain - It is possible to retain this tree in the long-term given the proposed plans and information available. This is assuming our recommended mitigation measures are followed
• Retain * - See report for more information regarding potential impacts

---

Table 1. Tree Inventory