ARBORIST REPORT & PLAN OF PRESERVATION 2323, 2319 & 2311 ... planning/da-17286401-arborist.pdf · 2323, 2319 & 2311 Belyea Street, Oakville Tree Inventory & Plan of Preservation November

ARBORIST REPORT & PLAN OF PRESERVATION2323, 2319 & 2311 BELYEA STREET

TOWN OF OAKVILLE

Belyea Development Inc.November 13, 2017TA-17-022Revised: November 23, 2017

2323, 2319 & 2311 Belyea Street, OakvilleTree Inventory & Plan of Preservation November 23, 2017

7 Oaks Tree Care & Urban Forestry Consultants Inc. TA – 17 – 022 2

Arborist Report & Plan of Preservation2323, 2319 & 2311 Belyea Street, Oakville

Prepared For:

Belyea Development Inc.

Prepared By:

November 23, 2017

P.O. Box 2453 (Stn. B) Richmond Hill, ON L4E 1A5t: (905) 773-1733 | e: [email protected]

7oakstreecare.ca



TABLE OF CONTENTS

1.0 Background Information .............................................................................................................................................. 041.1 Introduction...................................................................................................................................................... 041.2 General Overview............................................................................................................................................ 041.3 Purpose of Assignment ................................................................................................................................... 061.4 Nature of Proposed Development ................................................................................................................... 06

2.0 Methodology.................................................................................................................................................................. 072.1 Review............................................................................................................................................................. 072.2 Field Study ...................................................................................................................................................... 072.3 Tree Species ................................................................................................................................................... 082.4 Tree Locations................................................................................................................................................. 082.5 Tree Sizes ....................................................................................................................................................... 082.6 Tree Conditions ............................................................................................................................................... 09

3.0 Tree Inventory ............................................................................................................................................................... 104.0 Tree Preservation, Protection & Management ........................................................................................................... 10

4.1 Tree Protection Barriers .................................................................................................................................. 114.2 Tree Maintenance ........................................................................................................................................... 12

4.2.1 Pre-Construction Tree Maintenance................................................................................................ 124.2.2 Tree Maintenance During Construction........................................................................................... 134.2.3 Post-Construction Tree Maintenance .............................................................................................. 14

5.0 Conclusions & Recommendations .............................................................................................................................. 155.1 Tree Removals – Permit Requirements for Privately-Owned Trees ............................................................... 155.2 Tree Injuries – Tree Protection Zone Encroachment Permit Requirements.................................................... 235.3 Monetary Valuations of City Owned Trees...................................................................................................... 26

6.0 Limitations of Assessment .......................................................................................................................................... 27

List of AppendicesAppendix 1 Tree Inventory, Assessment & Recommendations for Preservation............................................................... 29Appendix 2 Photographs .................................................................................................................................................... 39Appendix 3 Tree Preservation Fencing Specifications ....................................................................................................... 49Appendix 4 Trunk Formula Worksheets for Monetary Valuations of Trees #825 and #826............................................... 50

EnclosuresTree Preservation Plan (Drawing No. TIPP-01)



1.0 BACKGROUND INFORMATION

1.1 Introduction

This report has been prepared to address the proposed development at 2311, 2319 and2323 Belyea Street. This report will address the requirements set out by the Town ofOakville for preparation of an Arborist Report and Tree Preservation Plan. Allconclusions and recommendations in this report are based on the field data collected,as well as the proposed Site Plan, Grading Plan and Site Servicing Plan.

This report is to be read in conjunction with the Tree Preservation Plan (Drawing No.TIPP-01).

1.2 General Overview

The subject property (from the available site survey) is legally described as Lot 70 andPart of Lots 61 and 72, Registered Plan M-7, Town of Oakville.

The subject site spans across three separate lots:

2323 Belyea Street is a large, L-shaped lot, with an existing gravel driveway extendingsouth, to Belyea Street, and the property extending east, behind 2319 and 2311 BelyeaStreet. There is an existing 6-unit, two storey low-rise apartment building located on thecentral portion of the site. A small metal shed is located along the southeasternboundary line. The vegetation on this site is comprised of many trees, from young,immature natural regeneration to large over mature specimens; there are also manydead Ash trees that have succumbed to infestation of Emerald Ash Borer (EAB).

2319 Belyea Street is located adjacent to and south of 2323 Belyea Street. There is asmall one and a half storey dwelling on the site; two unpaved driveways are locatedalong both the east and west sides of the property. This property has only one matureNorway Maple on it and is surrounded by the existing vegetation of 2323 Belyea.

2311 Belyea Street is located south of 2323 Belyea and adjacent to (east of) 2319Belyea Street. The existing one and a half storey dwelling on the east side of the site,with a detached garage at the northeast corner of the site have been demolished. Thevegetation on this site is comprised of some young to semi-mature landscapespecimens and naturally regenerated trees and shrubs.



Refer to Figure 1, below, for an aerial view of the subject site.

Figure 1. Aerial view of the 2323, 2319 and 2311 Belyea Street. Boundary lines are approximate. Note that the existing house anddetached garage at #2311 Belyea Street have been demolished

#2323

#2319

#2311



1.3 Purpose of Assignment

7 Oaks Tree Care & Urban Forestry Consultants was retained by Belyea DevelopmentsInc. to prepare a Tree Inventory and Preservation Plan for a proposed residential infilldevelopment project.

The intent of this report is to:

1. Identify all of the trees 10 cm or larger in diameter at breast height (1.4m abovegrade; DBH) located on the subject land and located within 6 metres of thesubject land on adjacent private property

2. Identify trees of any size located on the adjacent municipal road allowance orwithin 6m on adjacent municipal property

3. Provide prescriptions for tree preservation, including mitigation of any treeinjuries, as well as rationale for any tree removals

4. Provide guidance for compensatory tree planting requirements5. Prepare a Plan of Preservation with regard to the proposed development plans

1.4 Nature of Proposed Development

The re-development of the site will include: Demolition of the existing dwellings on the site Construction of four townhouse buildings, with a total of 20 units on the site Construction of a common T-shaped roadway from Belyea street, with

accompanying parking areas Extension of the existing storm, sanitary and water services from Belyea

Street to service the proposed new units

Figure 2. Aerial view of the entire site encompassing 505, 507 and 509 Valhalla Court. Boundary lines are approximate.



2.0 METHODOLOGY

The following sections outline the methodology used in the preparation of this report aswell as during the requisite field work.

All data used in this report is empirical in nature, unless stated otherwise.

All measurements in this report are expressed in the metric system of measurement.

2.1 Document Review

A review of all available drawings was conducted. This included: A Topographic Sketch of Lot 70 and Part of Lots 61 and 72, Registered Plan

M-7, Town of Oakville, as prepared by Cunningham McConnell Limited, anddated July 19, 2017

A Site Plan, as prepared by Cassidy and Co. and dated October 3, 2017 A Preliminary Site Grading Plan, as prepared by Valdor Engineering, and

dated November 6, 2017 A Preliminary Site Servicing Plan, as prepared by Valdor Engineering and

dated November 2017

2.2 Field Study

On site inspection and data collection was initiated and completed on May 15, 2017

All trees located on the subject lands or within six metres of the subject lands whosediameter at breast height, 1.4 metres above grade (DBH), were 10 cm or larger weretagged, inventoried and assessed and are referred to in this report as significant tree.

All trees, regardless of size, located on adjacent municipal property within six metres ofthe subject lands, were tagged, inventoried, and assessed and are referred to in thisreport as municipal tree.

Any species ranked as Endangered, Threatened, or of Special Concern, located on thesubject lands or within six metres of the subject lands, were tagged, inventoried andassessed, regardless of size. These trees are referred to in this report as species atrisk.



2.3 Tree Species

All inventoried trees have been identified by their regionally used common namefollowed by their most current taxonomical nomenclature.

2.4 Tree Locations

The locations of all significant, municipal, and species at risk trees, were originallysurveyed and plotted on A Topographic Sketch of Lot 70 and Part of Lots 61 and 72,Registered Plan M-7, Town of Oakville, as prepared by Cunningham McConnellLimited, and dated July 19, 2017

This information was utilized and accurately appears in this report along with the SitePlan as the Tree Preservation Plan (Drawing No. TIPP-01).

See Enclosure

2.5 Tree Sizes

All significant trees were sized by measuring their trunk diameter at 1.4 metres aboveexisting grade. This is referred to as the diameter at breast height (DBH), as peraccepted arboricultural standards. In the event where an accurate measurementcannot be obtained by measuring the tree at 1.4m (i.e. multiple dominant leaders withincluded bark), the tree will be measured using the appropriate accepted arboriculturalmethods.

All municipal and species at risk trees with a DBH less than 9 cm had their diametermeasured at 15 cm above existing grade. This is referred to as the calliper diameter ofthe tree.



2.6 Tree Conditions

All inventoried trees are assessed based on a visual inspection of the above-groundportion of the tree, including a root flare, trunk, limbs, branches and twigs, and foliage.

Any existing abiotic (environmental, physical or mechanical damage), or biotic (insectsand disease) are also recorded and contribute to the overall assessment of condition.

A generalized assessment system was employed to describe the overall condition ofeach inventoried tree. A 5 level scale of plant health and structure with descriptors ofvery good, good, fair, poor, and very poor was used to quantify the range of the tree’scondition.

Very Good condition was applied to a tree whose health, growth rate, crown closure andstructural integrity was greater than eighty percent of a perfect specimen.

Conversely, Very Poor condition was applied to a tree whose condition is less thantwenty percent of a perfect specimen.

The table below provides a summary of factors and rating scale for assessed plantcondition:

Table 1. Condition assessment factors

Factors Assessed Assessed Condition Percentage of aPerfect Specimen

Roots Collar/flare Mechanical injury Girdling roots Insects/disease Decay/fungiTrunk Cavities Mechanical injury Cracks Swollen/sunken areas Insects/disease FungiFoliage/Buds Size of foliage/buds Foliage colour Foliage injury Dieback of buds/foliage Insects/disease

Scaffold Branches Attachments/included bark Taper Distribution Decay/cavities Deadwood Insects/diseaseSmall Branches/Twigs Vigour/growth rates Distribution Appearance Insects/disease Dieback

(Adapted from the CTLA Guide for Plant Appraisal, 9th Ed.)

Very Good 100 – 81

Good 80 – 61

Fair 60 – 41

Poor 40 – 21

Very Poor 20 – 0



3.0 TREE INVENTORY

A total of 85 trees were inventoried. The following table summarizes the number andcategory of the inventoried tree:

Table 2. Tree Inventory summary for 2311-2323 Belyea Street, OakvilleCategory

# Category QuantitySL Significant trees (≥ 10 cm DBH) located on Subject Lands 75PP Significant trees (≥ 10 cm DBH) located on adjacent Private Property within 6m 2

B Significant trees (≥ 10 cm DBH) located on a shared boundary line between the subject land andadjacent private property 6

MT Trees of all diameters situated within the City road allowance adjacent to the subject site. 2SAR Species At Risk trees identified 0

Total number of Trees Inventoried 85

Refer to Appendix 1 for the detailed inventory and condition assessment of each

individual tree.

4.0 TREE PRESERVATION, PROTECTION & MANAGEMENT

This section outlines the prescriptions for tree preservation, protection andmaintenance. This includes any required tree removals, pruning, fertilizing, root pruningand protection, mulching, and installation of tree protection hoarding.

All tree maintenance shall be carried out to the most current arboricultural standardsand only by qualified arborists who are certified to practice in the province of Ontario.

Trees recorded in the inventory are assigned one of four levels of protection and/orpreservation/removal:



1. Preserve, Protect & MaintainIncludes protection with tree preservation hoarding, as well as pre- and post-

construction arboricultural works

2. Preserve & ProtectIncludes the installation of tree protection hoarding; no maintenance will be

required

3. RetainNo protection or maintenance measures are required. Installation of tree

protection barriers is optional

4. RemoveDue to site or development constraints, tree condition or location, retention is not

warranted.

4.1 Tree Protection Barriers

All trees scheduled to be Preserved, Protected & Maintained or Preserved &Protected shall have their critical rooting zones protected with the installation of treeprotection barriers to form a Tree Protection Zone (TPZ).

Tree protection barriers shall be installed as per Town of Oakville Schedule 1 TreeProtection Barrier.

The tree protection barriers shall be installed at the approved location and shall bemaintained in its original location and condition until all construction activities within thesite have ceased and all equipment is removed from the site. No equipment or materialstorage, flushing of fuel or washing of equipment is allowed within the TPZ.

Notification to the Town of Oakville that the tree protection barriers have been erectedshall be given immediately after installation.

Approval from the Town of Oakville that the tree protection barriers are satisfactory shallbe obtained prior to any further works commencing on the site.



4.2 Tree Maintenance

Specifications for tree maintenance are outlined in this section. This includesmaintenance prior to construction, remedial action during construction and post-construction maintenance.

4.2.1 Pre-Construction Maintenance

Prior to any construction works commencing, all trees scheduled to be Preserved,Protected & Maintained shall undergo preventative maintenance. This may include:

i. Pruning

Trees shall be properly pruned to encourage healthy, vigorous growth. This

includes the removal of deadwood, and crown cleaning and thinning.

Additionally, any branches or limbs found to interfere with the proposed

construction works shall be removed at this time to prevent improper pruning or

mechanical injury.

ii. Fertilizing

The critical rooting zones specified to be protected with tree protection hoarding

shall be deep root fertilized to assist the tree in mitigating any possible impacts or

stresses caused by the proposed construction.

A suspendable fertilizer formulation of 30-8-8, 60% U.F. with a complete

micronutrient package shall be used and applied at a rate of 1.2 kg nitrogen per

100m2 or an approved alternate.

Delivery of the fertilizer formulation shall be by high pressure injection using

water as a medium.



4.2.2 Tree Maintenance during Construction

During the construction phase of development, mitigation of problems caused by

excavation and other construction activities must be addressed. This shall include:

i. Excavation Monitoring & Root Pruning

During construction, any excavation that will affect the critical rooting zones of a

tree shall be monitored by a certified arborist. If, during the excavation, roots are

injured or cut, the arborist shall prune or cut the injured root with a sharp

implement. This will encourage callous formation and adventitious root

sprouting.

ii. Irrigation

During construction, any trees that are subject to drought conditions shall have

their critical rooting zones watered to maintain a moist/fresh moisture regime.

iii. Accidental Damage to Trees

If, during any phase of construction, damage occurs to any trees that are

scheduled to be preserved, the Consulting Arborist shall be notified immediately.

The consulting arborist shall prescribe the remedial works which shall commence

immediately and at the owner’s expense.



4.2.3 Post-Construction Maintenance

Once construction activities are completed, any required remedial works shall be

prescribed by the consulting arborist. This will include:

i. Post-Construction Inspection

Once all construction activities have ceased, evaluation of the current condition

of the trees scheduled for preservation should be conducted. This will include

examination of the critical rooting zone and examination of the tree for any

mechanical injury.

ii. Removal of Tree Protection Barriers

Upon the approval of the Town of Oakville, all tree protection barriers can be

removed.



5.0 CONCLUSIONS & RECOMMENDATIONS

5.1 TREE REMOVALS – Permit Requirements for Privately-Owned Trees

A total of 81 trees will require removal due to the proposed development. The following

table outlines the trees to be removed and the rationale behind their recommended

removal:

Table 3. Recommended tree removals at 2311-2323 Belyea Street, Oakville

TAG # COMMON NAME LATIN BINOMIALD

BH

(cm

)

Min

.TP

Z (m

)

Cat

.

CO

ND

ITIO

N

REMARKS RECOMMENDATIONS

1568 White Cedar Thuja occidentalis 22 2.4 SL Good Crown raised;stubs on bole

REMOVEServicing removal willrequire tree removal

1569 White Cedar Thuja occidentalis 19 2.4 SL Good Crown raised;stubs on bole

REMOVEServicing removal willrequire tree removal

1571 White Cedar Thuja occidentalis 24 2.4 SL VeryGood

REMOVESTM installation willrequire tree removal

1572 Balsam Fir Abies balsamea 21 2.4 SL VeryPoor

Seam on northside of rootflare; poor flareon west side;extensivebranch diebackthroughoutcrown; foliage isbrowning

REMOVETree located withinproposed buildingfootprint

1573 Silver Maple Acer saccharinum 59 3.6 SL Poor

Large limb onwest sideremoved andbark peeledbelow; tree hasbeen topped;asphalt to rootflare on westside; deadwoodthroughoutcrown

REMOVEDue to location ofproposed swale, removalrecommended

1574 White Cedar Thuja occidentalis 16 2.4 SL Good Suppressedcrown


1575 White Cedar Thuja occidentalis 10 - SL Dead Tree is Dead REMOVEDead tree to be removed



TAG # COMMON NAME LATIN BINOMIAL

DB

H (c

m)

Min

.TP

Z (m

)

Cat

.

CO

ND

ITIO

N


1576 Manitoba Maple Acer negundo 27 2.4 SL Fair

Branch diebackthroughoutcrown; bole hasgrown throughchain link fence

REMOVEDue to current growingcondition and damage toexisting fence, removal iswarranted

1577 White Cedar Thuja occidentalis 13 2.4 SL Poor

Top has diedback; crown isthin andsuppressed

REMOVEDue to current condition,removal is warranted

1578 Norway Maple Acer platanoides cv. 13 2.4 SL Good

Crownsuppressed;naturallyregenerated


1579 White Cedar Thuja occidentalis 16 2.4 SL FairCo-dominantleader; thincrown


1580 White Mulberry Morus alba 16 2.4 SL VeryGood

Some wetwoodstaining on eastside at branchattachment onbole


1581 Balsam Fir Abies balsamea 24 - SL Dead Tree is Dead REMOVEDead tree to be removed


Tree isleaning/growingon a 45 degangle and ishorizontal atone point; smalldeadwoodthroughoutcrown

REMOVEDue to current growingcondition removal iswarranted

1583 White Cedar Thuja occidentalis 15 x 9x 8 2.4 SL Fair 3 stems; thin

crown


1584 White Cedar Thuja occidentalis 25 2.4 SL Fair

Crownimbalanced towest; deadwoodthroughout


1585 White Cedar Thuja occidentalis 14 2.4 SL FairCrown is thinand imbalancedto the west

REMOVETree located withinproposed parking area

1586 White Cedar Thuja occidentalis 28 x 10 2.4 SL Fair

Crown is thin;wound on northside of largerstem


1587 Green Ash Fraxinus pennsylvanica 19 x 17 - SL DeadTree is Deaddue to EABinfestation

REMOVEDead tree to be removed




DB

H (c

m)

Min

.TP

Z (m

)

Cat

.

CO

ND

ITIO

N


1588 Green Ash Fraxinus pennsylvanica 18 - SL DeadTree is Deaddue to EABinfestation


1589 Green Ash Fraxinus pennsylvanica 15 x 14 - B Dead

Tree is Deaddue to EABinfestation;located onsharedboundary line




1591 Green Ash Fraxinus pennsylvanica 18 - B Dead



1592 Green Ash Fraxinus pennsylvanica 21 - B Dead



1593 White Cedar Thuja occidentalis 17 2.4 SL Poor Leaning 45 degto east




1595 White Cedar Thuja occidentalis 16 x 8 - SL Dead Tree is dead REMOVEDead tree to be removed

1596 Green Ash Fraxinus pennsylvanica 23 - B DeadTree is Deaddue to EABinfestation


1597 Green Ash Fraxinus pennsylvanica 31 - PP Dead



1598 White Cedar Thuja occidentalis 24 2.4 SL Good Thin crown


1599 Siberian Elm Ulmus pumila 18 2.4 SL VeryGood





DB

H (c

m)

Min

.TP

Z (m

)

Cat

.

CO

ND

ITIO

N




1601 Green Ash Fraxinus pennsylvanica 19 x 19x 14 2.4 SL Very

Poor

Infested withEAB; <5% live;only epicormicbranching incrown

REMOVETree is infested with EABand in a rapid state ofdecline

1602 Black Locust Robinia pseudoacacia 21 2.4 SL Good




1604 Pear Pyrus spp. 29 2.4 SL Poor

Topped;deadwoodthroughoutcrown


1605 Pear Pyrus spp. 28 2.4 SL Fair

Topped;deadwoodthroughoutcrown

REMOVETree located withinexcavation area ofproposed buildingfoundation







1609 Black Locust Robinia pseudoacacia 48 x 21 3.0 SL Good

Co-dominantstems;deadwoodthroughoutcrown

REMOVEDue to location ofproposed swale andproposed change toexisting grades, removalrecommended

1610 Black Locust Robinia pseudoacacia 89 5.4 SL Fair

Co-dominantstems withsevere includedbark; deadwoodthroughoutcrown

REMOVEDue to location ofproposed swale andproposed change toexisting grades, removalrecommended


Branch diebackthroughoutcrown; crown isthin

REMOVEDue to location ofproposed swale andtree's current condition,removal recommended




DB

H (c

m)

Min

.TP

Z (m

)

Cat

.

CO

ND

ITIO

N




1613 Green Ash Fraxinus pennsylvanica 15 2.4 B VeryPoor

< 5% live;located onsharedboundary line




1615 Pear Pyrus spp. 22 2.4 SL VeryPoor

Extensivebranch dieback;cavity on northside of bole;bole is largelyhollow




1617 Black Locust Robinia pseudoacacia 26 2.4 SL Good Somedeadwood


1618 Pear Pyrus spp. 19 2.4 SL VeryPoor

Extensive decayon east side ofbole; deadwoodthroughout



Crown is thinandsuppressed; co-dominant stemshave includedbark at maincrotch

REMOVEDue to requiredexcavation for proposedbuilding foundation andparking area, as well asproximity of tree toproposed bulding,removal recommended

1621 White Cedar Thuja occidentalis 24 2.4 SL GoodCrownimbalanced tonorth



Largelongitudinalwound on northside of bole;crown is thin


1623 White Cedar Thuja occidentalis 24 x 14 2.4 SL Fair Crown is thin


1624 White Cedar Thuja occidentalis 15 2.4 SL PoorCrown is thin;branch diebackthroughout





DB

H (c

m)

Min

.TP

Z (m

)

Cat

.

CO

ND

ITIO

N


1625 White Cedar Thuja occidentalis 15 x[11x12] 2.4 SL Very

Poor

Bole and crownare misshapen;crown is thinwith extensivebranch dieback


1626 Green Ash Fraxinus pennsylvanica 23 2.4 SL VeryPoor

Infested withEAB; < 5% live;only epicormicbranching


1627 Manitoba Maple Acer negundo 15 x 9 2.4 SL Poor Growing intochain link fence


1628 White Cedar Thuja occidentalis 18 x 9 2.4 SL VeryPoor

Extensivebranch diebackthroughoutcrown


1629 White Cedar Thuja occidentalis 38 x 23x 23 2.4 SL Poor

3 stem clump;thin crowns;decay on northside of easternstem


1630 Manitoba Maple Acer negundo 27 x 9 2.4 SL Poor

Leaning to thesouth; extensiveepicormicbranching atbase and onbole; deadwoodthroughoutcrown

REMOVETree located withinproposed roadway

1631 White Cedar Thuja occidentalis33 x[20 x27]

2.4 SL Poor

2 stem clump;eastern stemhas largebranch failureon south sidewith decay onbole; westernstem is co-dominant andcrown isthin/suppressed


1632 White Cedar Thuja occidentalis 20 x 16x 13 2.4 SL Poor

3 stem clump;crowns aresmall andsuppressed


1633 White Cedar Thuja occidentalis 28 x 27 2.4 SL Poor

2 stems; crownsare thin; woundon north side ofbole on smallerstem





DB

H (c

m)

Min

.TP

Z (m

)

Cat

.

CO

ND

ITIO

N


1634 Norway Maple Acer platanoides cv. 18 2.4 SL Good Crownsuppressed


1635 White Cedar Thuja occidentalis18 x 17x 17 x

152.4 SL Fair Clump of 4

stems

REMOVEDue to excavationrequired for proposedroadway, removalrecommended

1636 White Cedar Thuja occidentalis 29 2.4 SL FairLeaning to thesouth; crown isthin

REMOVEDue to excavationrequired for proposedroadway, removalrecommended

1637 White Cedar Thuja occidentalis29 x 22x 23 x

222.4 SL Fair

4 stem clump; 2northern stemssplitting apart atbase; thincrowns; leaningto the south

REMOVEDue to excavationrequired for proposedroadway and parkingarea, removalrecommended


Thin crown;cavity withdecay on northside of root flare



Large decayedarea onnorthwest sideof bole frombase; tree isleaning to thesoutheast; thincrown




1641 Pear Pyrus spp. 19 x 18 2.4 SL Poor

Topped;extensivebranch dieback;cavity withdecay on southside of bole; co-dominant stemswith includedbark


1642 Pear Pyrus spp. 36 2.4 SL Poor

Topped;deadwoodthroughoutcrown; largecavity on southside of bole


1643 Norway Maple Acer platanoides cv. 21 2.4 SL VeryGood





DB

H (c

m)

Min

.TP

Z (m

)

Cat

.

CO

ND

ITIO

N


1644 White Mulberry Morus alba 17 2.4 SL Fair

Vines in crown;wetwood onnorth side ofbole

REMOVETree located withinproposed driveway

1645 Norway Maple Acer negundo 17 2.4 SL FairTree is grownthrough fence;small crown


1646 Black Walnut Juglans nigra 13 2.4 SL Good

Top has diedback and newleadersestablished


1647 White Spruce Picea glauca 16 2.4 SL VeryGood

Excellentspecimen

REMOVETree located withinproposed driveway

1649 White Spruce Picea glauca 27 2.4 SL Fair

Bole iscankered andmisshapen;leaning to thenorthwest;


1650 White Spruce Picea glauca 14 2.4 SL FairLower branchdieback; smallcrown


Tree A Norway Maple Acer platanoides cv. ~65 4.2 SL Fair

Tree noaccessed(viewed fromwest side only);small cavity onwest side ofbole withpotential decay;minordeadwood; treehas beenpreviouslypruned and acable installed;included bark atmain crotch


Of these 81 trees, a total of 22 trees are dead or dying due to infestation from EAB.These trees have been identified in red in the above table. Exemption from requiredpermit fees is requested.



5.2 TREE INJURIES – Tree Protection Zone Encroachment PermitRequirements

A total of FIVE (5) trees will require a tree Protection Zone Encroachment Permit(TPZEP) due to the proposed construction works.

The following table summarizes the trees that will have their minimum TPZ encroachedupon, the rationale behind the proposed encroachment, and any mitigation (if required):

Table 4. Trees requiring a TPZEP

TAG# COMMON NAME

DB

H (c

m)

Min

.TP

Z (m

)

Cat

.

CO

ND

ITIO

N


1570 Silver MapleAcer saccharinum 85 5.4 MT Good

Co-dominant stemshave a U-shapedcrotch; somedeadwood on northside of crown

A total of approximately 31% of the tree’sminimum TPZ will be impacted due to theinstallation of the required site servicing as wellas the grouting and capping of the existing 3service laterals to be removedRecommendation: PRESERVE & PROTECTSilver Maple is a resilient species, tolerant of rootdisturbance. This tree is in Good condition and,if the following recommendations are adhered to,it is not expected for the tree to succumb to theanticipated impacts of the proposed construction:- Install tree protection fencing as per the

approved Tree Protection Plan. This treeprotection fencing is to remain in place untilall construction has been completed

- NO HEAVY MACHINERY OR EQUIPMENTIS TO ENTER INTO THE TPZ OF THE TREEAT ANY TIME

- The required excavations for the removal ofexisting services and installation of the newstorm service shall be completed using hydro-vac excavation or other approved method(manual/hand excavation)

- Excavations shall be monitored by theConsulting Arborist and any exposed rootsshall be immediately pruned



TAG# COMMON NAME

DB

H (c

m)

Min

.TP

Z (m

)

Cat

.

CO

ND

ITIO

N


1619 Black LocustRobinia pseudoacacia ~80 5.4 B Good

Large limbremoved on southside; somedeadwood(potential rootdamage due toretaining wallinstalled onadjacent privateproperty to theeast); located onshared boundaryline

A total of approximately 17% of the tree’sminimum TPZ will be impacted due to theconstruction of the nearby parking area. Other,less-invasive activities will also be completed,including minor grading (swale installation) andremoval of the existing garage and foundation.Recommendation: PRESERVE & PROTECTBlack Locust is a resilient species, tolerant ofroot disturbance. This tree is in Good conditionand, if the following recommendations areadhered to, it is not expected for the tree tosuccumb to the anticipated impacts of theproposed construction:- Install tree protection fencing as per the



- The required excavations for the constructionof the parking area are to be completed usinghydro-vac or manual/hand excavation

- Excavation shall be monitored by theConsulting Arborist and any exposed rootsshall be immediately pruned

- The existing frame garage is to be removedprior to the installation of the TPZ fencing.The garage and foundation shall be removedvia access from the west and south sides ofthe garage only.



TAG# COMMON NAME

DB

H (c

m)

Min

.TP

Z (m

)

Cat

.

CO

ND

ITIO

N


1648 Black LocustRobinia pseudoacacia 21 2.4 PP Good

Potential rootdamage on eastside due toretaining wallconstruction; treeleaning to thesoutheast; somedeadwood

Less-invasive activities will be completed withinthe TPZ, including minor grading (swaleinstallation) and removal of the existing garageand foundation.Recommendation: PRESERVE & PROTECTBlack Locust is a resilient species, tolerant ofroot disturbance. This tree is in Good conditionand, if the following recommendations areadhered to, it is not expected for the tree tosuccumb to the anticipated impacts of theproposed construction:- Install tree protection fencing as per the



- Any required excavation shall be monitoredby the Consulting Arborist and any exposedroots shall be immediately pruned

- The existing frame garage is to be removedprior to the installation of the TPZ fencing.The garage and foundation shall be removedvia access from the west and south sides ofthe garage only.



5.3 Monetary Valuation of City-Owned Trees

As per the Town of Oakville specifications, eight (8) City trees will require monetaryvaluations to determine tree security deposits for preservation.

To determine the amenity value of these trees, guidance was taken from the Council ofTree and Landscape Appraiser’s Trunk Formula Method. This method was utilized dueto the assessed size of the trees; these trees are not commonly available to be sourcedfor a nursery at their assessed size.

Refer to the following table outlining the amenity values for the remaining municipaltrees.

Table 5. Amenity Value of municipally-owned trees utilizing the Trunk Formula Method

Tree # Assessed Value

1570 $ 50 476.53

Tree ‘B’ $ 1 064.17

TOTAL ASSESSED VALUE $ 51 540.70

Refer to Appendix 4 for the Trunk Formula Method Worksheets, outlining the valuesutilized in determining the value of these trees.



6.0 LIMITATIONS OF ASSESSMENT

The assessment of the trees presented in this report has been made using acceptedarboricultural techniques. These include a visual examination of all the above groundparts of the tree for structural defects, scars, external indications of decay such asfungal fruiting bodies, evidence of attack by insects, discoloured foliage, the condition ofany visible root structures, the degree and direction of lean (if any), the generalcondition of the trees and the surrounding site, and the proximity of property andpeople. Except where specifically noted, the trees were not cored, probed or climbedand there was no detailed inspection of the root crowns involving excavations.

Notwithstanding the recommendations and conclusions made in this report, it must berecognized that trees are living organisms, and their health and vigour constantlychange over time. They are not immune to changes in site conditions or seasonalvariations in the weather conditions.

While reasonable efforts have been made to ensure that the assessment of the subjecttrees is accurate, no guarantees are offered, or implied, that these trees or any of theirparts will remain standing. It is both professionally and practically impossible to predictwith absolute certainty the behaviour of any single tree or its component parts under allcircumstances. Inevitably, a standing tree will always pose some level of risk. Mosttrees have the potential for failure under adverse weather conditions, and the risk canonly be eliminated if the tree is removed.

Although every effort has been made to ensure that this assessment is reasonablyaccurate, the trees should be re-assessed periodically. The assessment presented inthis report is valid at the time of inspection.



This 52 page report was prepared by

Laura StorozinskiConsulting Arborist7 Oaks Tree Care & Urban Forestry Consultants Inc.ISA Certification # ON-1319AISA TRAQ Certified Tree Risk AssessorOMNR Certified Butternut Health AssessorASCA Member



Appendix 1Tree Inventory, Assessment & Recommendations for Preservation


DB

H (c

m)

Min

.TP

Z (m

)

Cat

.

CO

ND

ITIO

N


1568 White Cedar Thuja occidentalis 22 2.4 SL Good Crown raised; stubs on boleREMOVEServicing removal will require treeremoval

1569 White Cedar Thuja occidentalis 19 2.4 SL Good Crown raised; stubs on boleREMOVEServicing removal will require treeremoval

1570 Silver Maple Acer saccharinum 85 5.4 MT Good

Co-dominant stems have aU-shaped crotch; somedeadwood on north side ofcrown

PRESERVE & PROTECTInstall TPZ hoardingExisting gravel driveway to beremediated by hand - NO HEAVYMACHINERY TO ENTER INTO TPZAT ANY TIME

1571 White Cedar Thuja occidentalis 24 2.4 SL Very GoodREMOVESTM installation will require treeremoval

1572 Balsam Fir Abies balsamea 21 2.4 SL Very Poor

Seam on north side of rootflare; poor flare on westside; extensive branchdieback throughout crown;foliage is browning

REMOVETree located within proposed buildingfootprint

1573 Silver Maple Acer saccharinum 59 3.6 SL Poor

Large limb on west sideremoved and bark peeledbelow; tree has beentopped; asphalt to root flareon west side; deadwoodthroughout crown

REMOVEDue to location of proposed swale,removal recommended

1574 White Cedar Thuja occidentalis 16 2.4 SL Good Suppressed crownREMOVEDue to location of proposed swale,removal recommended




DB

H (c

m)

Min

.TP

Z (m

)

Cat

.

CO

ND

ITIO

N


1575 White Cedar Thuja occidentalis 10 - SL Dead Tree is Dead REMOVEDead tree to be removed

1576 Manitoba Maple Acer negundo 27 2.4 SL FairBranch dieback throughoutcrown; bole has grownthrough chain link fence

REMOVEDue to current growing condition anddamage to existing fence, removal iswarranted

1577 White Cedar Thuja occidentalis 13 2.4 SL Poor Top has died back; crown isthin and suppressed

REMOVEDue to current condition, removal iswarranted

1578 Norway Maple Acer platanoides cv. 13 2.4 SL Good Crown suppressed;naturally regenerated


1579 White Cedar Thuja occidentalis 16 2.4 SL Fair Co-dominant leader; thincrown


1580 White Mulberry Morus alba 16 2.4 SL Very GoodSome wetwood staining oneast side at branchattachment on bole


1581 Balsam Fir Abies balsamea 24 - SL Dead Tree is Dead REMOVEDead tree to be removed


Tree is leaning/growing ona 45 deg angle and ishorizontal at one point;small deadwood throughoutcrown

REMOVEDue to current growing conditionremoval is warranted

1583 White Cedar Thuja occidentalis 15 x 9 x 8 2.4 SL Fair 3 stems; thin crownREMOVEDue to location of proposed swale,removal recommended




DB

H (c

m)

Min

.TP

Z (m

)

Cat

.

CO

ND

ITIO

N


1584 White Cedar Thuja occidentalis 25 2.4 SL Fair Crown imbalanced to west;deadwood throughout


1585 White Cedar Thuja occidentalis 14 2.4 SL Fair Crown is thin andimbalanced to the west

REMOVETree located within proposed parkingarea

1586 White Cedar Thuja occidentalis 28 x 10 2.4 SL Fair Crown is thin; wound onnorth side of larger stem


1587 Green Ash Fraxinus pennsylvanica 19 x 17 - SL Dead Tree is Dead due to EABinfestation


1588 Green Ash Fraxinus pennsylvanica 18 - SL Dead Tree is Dead due to EABinfestation


1589 Green Ash Fraxinus pennsylvanica 15 x 14 - B DeadTree is Dead due to EABinfestation; located onshared boundary line




1591 Green Ash Fraxinus pennsylvanica 18 - B DeadTree is Dead due to EABinfestation; located onshared boundary line


1592 Green Ash Fraxinus pennsylvanica 21 - B DeadTree is Dead due to EABinfestation; located onshared boundary line


1593 White Cedar Thuja occidentalis 17 2.4 SL Poor Leaning 45 deg to eastREMOVETree located within proposed buildingfootprint



1595 White Cedar Thuja occidentalis 16 x 8 - SL Dead Tree is dead REMOVEDead tree to be removed

1596 Green Ash Fraxinus pennsylvanica 23 - B Dead Tree is Dead due to EABinfestation





DB

H (c

m)

Min

.TP

Z (m

)

Cat

.

CO

ND

ITIO

N


1597 Green Ash Fraxinus pennsylvanica 31 - PP DeadTree is Dead due to EABinfestation; located onshared boundary line


1598 White Cedar Thuja occidentalis 24 2.4 SL Good Thin crownREMOVEDue to location of proposed swale,removal recommended

1599 Siberian Elm Ulmus pumila 18 2.4 SL Very GoodREMOVEDue to location of proposed swale,removal recommended

1600 White Cedar Thuja occidentalis 22 2.4 SL Very GoodREMOVEDue to location of proposed swale,removal recommended

1601 Green Ash Fraxinus pennsylvanica 19 x 19 x 14 2.4 SL Very PoorInfested with EAB; <5% live;only epicormic branching incrown

REMOVETree is infested with EAB and in arapid state of decline

1602 Black Locust Robinia pseudoacacia 21 2.4 SL GoodREMOVEDue to location of proposed swale,removal recommended

1603 White Cedar Thuja occidentalis 28 2.4 SL Very GoodREMOVEDue to location of proposed swale,removal recommended

1604 Pear Pyrus spp. 29 2.4 SL Poor Topped; deadwoodthroughout crown





DB

H (c

m)

Min

.TP

Z (m

)

Cat

.

CO

ND

ITIO

N


1605 Pear Pyrus spp. 28 2.4 SL Fair Topped; deadwoodthroughout crown

REMOVETree located within excavation areaof proposed building foundation







1609 Black Locust Robinia pseudoacacia 48 x 21 3.0 SL GoodCo-dominant stems;deadwood throughoutcrown

REMOVEDue to location of proposed swaleand proposed change to existinggrades, removal recommended

1610 Black Locust Robinia pseudoacacia 89 5.4 SL Fair

Co-dominant stems withsevere included bark;deadwood throughoutcrown

REMOVEDue to location of proposed swaleand proposed change to existinggrades, removal recommended

1611 White Cedar Thuja occidentalis 20 2.4 SL Poor Branch dieback throughoutcrown; crown is thin

REMOVEDue to location of proposed swaleand tree's current condition, removalrecommended



1613 Green Ash Fraxinus pennsylvanica 15 2.4 B Very Poor < 5% live; located onshared boundary line





DB

H (c

m)

Min

.TP

Z (m

)

Cat

.

CO

ND

ITIO

N




1615 Pear Pyrus spp. 22 2.4 SL Very PoorExtensive branch dieback;cavity on north side of bole;bole is largely hollow




1617 Black Locust Robinia pseudoacacia 26 2.4 SL Good Some deadwoodREMOVETree located within proposed buildingfootprint

1618 Pear Pyrus spp. 19 2.4 SL Very PoorExtensive decay on eastside of bole; deadwoodthroughout


1619 Black Locust Robinia pseudoacacia ~80 5.4 B Good

Large limb removed onsouth side; some deadwood(potential root damage dueto retaining wall installed toeast); located on sharedboundary line

PRESERVE & PROTECTInstall TPZ hoardingAny required grading to be completedby hand - NO HEAVY MACHINERYTO ENTER INTO TPZ AT ANY TIMEProvide root pruning during curbconstruction. Arborist to be on-site tomonitor excavation and provide rootpruning immediately upon any rootexposure


Crown is thin andsuppressed; co-dominantstems have included bark atmain crotch

REMOVEDue to required excavation forproposed building foundation andparking area, as well as proximity oftree to proposed bulding, removalrecommended




DB

H (c

m)

Min

.TP

Z (m

)

Cat

.

CO

ND

ITIO

N


1621 White Cedar Thuja occidentalis 24 2.4 SL Good Crown imbalanced to northREMOVETree located within proposed buildingfootprint

1622 White Cedar Thuja occidentalis 19 2.4 SL PoorLarge longitudinal wound onnorth side of bole; crown isthin


1623 White Cedar Thuja occidentalis 24 x 14 2.4 SL Fair Crown is thinREMOVETree located within proposed buildingfootprint

1624 White Cedar Thuja occidentalis 15 2.4 SL Poor Crown is thin; branchdieback throughout


1625 White Cedar Thuja occidentalis 15 x [11x12] 2.4 SL Very Poor

Bole and crown aremisshapen; crown is thinwith extensive branchdieback


1626 Green Ash Fraxinus pennsylvanica 23 2.4 SL Very PoorInfested with EAB; < 5%live; only epicormicbranching


1627 Manitoba Maple Acer negundo 15 x 9 2.4 SL Poor Growing into chain linkfence


1628 White Cedar Thuja occidentalis 18 x 9 2.4 SL Very Poor Extensive branch diebackthroughout crown


1629 White Cedar Thuja occidentalis 38 x 23 x 23 2.4 SL Poor3 stem clump; thin crowns;decay on north side ofeastern stem


1630 Manitoba Maple Acer negundo 27 x 9 2.4 SL Poor

Leaning to the south;extensive epicormicbranching at base and onbole; deadwood throughoutcrown

REMOVETree located within proposedroadway




DB

H (c

m)

Min

.TP

Z (m

)

Cat

.

CO

ND

ITIO

N


1631 White Cedar Thuja occidentalis 33 x [20 x 27] 2.4 SL Poor

2 stem clump; eastern stemhas large branch failure onsouth side with decay onbole; western stem is co-dominant and crown isthin/suppressed


1632 White Cedar Thuja occidentalis 20 x 16 x 13 2.4 SL Poor 3 stem clump; crowns aresmall and suppressed


1633 White Cedar Thuja occidentalis 28 x 27 2.4 SL Poor2 stems; crowns are thin;wound on north side of boleon smaller stem


1634 Norway Maple Acer platanoides cv. 18 2.4 SL Good Crown suppressedREMOVETree located within proposedroadway

1635 White Cedar Thuja occidentalis 18 x 17 x 17 x 15 2.4 SL Fair Clump of 4 stems

REMOVEDue to excavation required forproposed roadway, removalrecommended

1636 White Cedar Thuja occidentalis 29 2.4 SL Fair Leaning to the south; crownis thin

REMOVEDue to excavation required forproposed roadway, removalrecommended

1637 White Cedar Thuja occidentalis 29 x 22 x 23 x 22 2.4 SL Fair

4 stem clump; 2 northernstems splitting apart atbase; thin crowns; leaningto the south

REMOVEDue to excavation required forproposed roadway and parking area,removal recommended

1638 White Cedar Thuja occidentalis 14 2.4 SL PoorThin crown; cavity withdecay on north side of rootflare



Large decayed area onnorthwest side of bole frombase; tree is leaning to thesoutheast; thin crown







DB

H (c

m)

Min

.TP

Z (m

)

Cat

.

CO

ND

ITIO

N


1641 Pear Pyrus spp. 19 x 18 2.4 SL Poor

Topped; extensive branchdieback; cavity with decayon south side of bole; co-dominant stems withincluded bark


1642 Pear Pyrus spp. 36 2.4 SL PoorTopped; deadwoodthroughout crown; largecavity on south side of bole


Tree A Norway Maple Acer platanoides cv. ~65 4.2 SL Fair

Tree no accessed (viewedfrom west side only); smallcavity on west side of bolewith potential decay; minordeadwood; tree has beenpreviously pruned and acable installed; includedbark at main crotch


1643 Norway Maple Acer platanoides cv. 21 2.4 SL Very GoodREMOVETree located within proposedroadway

1644 White Mulberry Morus alba 17 2.4 SL Fair Vines in crown; wetwood onnorth side of bole

REMOVETree located within proposeddriveway

1645 Norway Maple Acer negundo 17 2.4 SL Fair Tree is grown throughfence; small crown


1646 Black Walnut Juglans nigra 13 2.4 SL Good Top has died back and newleaders established


1647 White Spruce Picea glauca 16 2.4 SL Very Good Excellent specimenREMOVETree located within proposeddriveway




DB

H (c

m)

Min

.TP

Z (m

)

Cat

.

CO

ND

ITIO

N


1648 Black Locust Robinia pseudoacacia 21 2.4 PP Good

Potential root damage oneast side due to retainingwall construction; treeleaning to the southeast;some deadwood

PRESERVE & PROTECTInstall TPZ hoardingAny required grading to be completedby hand - NO HEAVY MACHINERYTO ENTER INTO TPZ AT ANY TIME

1649 White Spruce Picea glauca 27 2.4 SL FairBole is cankered andmisshapen; leaning to thenorthwest;


1650 White Spruce Picea glauca 14 2.4 SL Fair Lower branch dieback;small crown


Tree B Serviceberry Amelanchier canadensis ~10 2.4 MT Very Good TPZ erected around tree PRESERVE & PROTECTInstall TPZ hoarding



Appendix 2Photographs

Tree #1568-1571. Located along the southern boundary line at the driveway entrance to 2323 Belyea Street.

Trees 1572-1584. Facing south on the driveway to 2323 Belyea Street. Trees #1572; 1580-1581; 1584 on left side of photo

#1570 #1568-1569; 1571



Trees 1572-1584. Facing south on the driveway to 2323 Belyea Street. Trees #1573-1579; 1582-1583 on right side of photo

Facing south on the west end of the driveway to 2323 Belyea Street.

#1642

#1640

#1583



Facing southwest in the parking area of 2323 Belyea Street. Note the many dead Ash trees along the perimeter

Facing south in the parking area of 2323 Belyea Street. Note the many dead Ash trees along the perimeter



Trees #1641-1642 (foreground)Trees # 1634-1640 (background)

#1641

#1642

Facing west in the parking area of 2323 Belyea Street.



Facing northwest in the parking area of 2323 Belyea Street.

Facing southwest in the parking area of 2323 Belyea Street.

#1604 #1605

#1605#1604



Facing west in the rear yard of 2323 Belyea Street.

Facing north in the rear yard of 2323 Belyea Street.

#1609

#1610

#1616

#1615



Facing north in the rear yard of 2323 Belyea Street.

Facing northeast in the rear yard of 2323 Belyea Street.

#1619

#1626



Facing east in the rear yard of 2323 Belyea Street.

#1628

Southern portion of front yard of 2319 Belyea Street.

#1647



Rear yard of 2311 Belyea Street.

#1649

Tree #1648 Tree ‘B’

#1650



Fenceline at east side of rear yard of 2311 Belyea Street

#1643#1644

#1645



Appendix 3Tree Protection Fencing Specifications



Appendix 4Tree Amenity Value Worksheets

505, 507 & 509 Valhalla Court, OakvilleTree Inventory & Plan of Preservation November 23, 2017


505, 507 & 509 Valhalla Court, OakvilleTree Inventory & Plan of Preservation November 23, 2017


Documents

ARBORIST REPORT & PLAN OF PRESERVATION 2323, 2319 & 2311 ... planning/da-17286401-arborist.pdf · 2323, 2319 & 2311 Belyea Street, Oakville Tree Inventory & Plan of Preservation November