This is the exact embedded text of the captured official document.
Snapshot 935502d24e28 · verified 2026-06-10 ·
original document ·
archived snapshot ·
unofficial consolidation, the official version is held by the municipal clerk.
THE CORPORATION OF THE CITY OF BROCKVILLE
By-Law No. 055-2021
A By-Law to Regulate the Planting, Care, Preservation and Protection
and Replacement of Trees on Public Areas in the City of Brockville
WHEREAS the Municipal Act, 2001, S.O. 2001, Ch. 25, Section 135, as
amended, enables the Council of local municipalities to enact By-Laws to
prohibit or regulate the destruction or injuring of trees within the
municipality, and;
WHEREAS the Municipal Act, Section 270(1)7, a municipality shall
adopt and maintain a policy with respect to the way the municipality will
protect and enhance the tree canopy and natural vegetation in the
municipality, and;
WHEREAS Council deems it desirable to enact a "Tree Protection By-
law" for the purposes of;
- Regulating and controlling the removal, maintenance, and protection
of trees.
- Supporting the City's Strategic Plan and Sustainability Plan.
- Achieving the objectives of the City's Official Plan by sustaining
healthy, natural environment.
- Protecting and enhancing the biodiversity of wildlife habitat, and
related ecological functions.
- Promoting Good Forestry Practices and Good Arboricultural Practices
that sustain healthy tree coverage on City property.
NOW THEREFORE the Council of the Corporation of the City of Brockville
hereby enacts as follows:
1.0
Definitions
In this By-Law,
1.1. "good arboricultural practices" means the practice as published by
Landscape Ontario, International Society of Arboriculture (ISA) and
Electrical Utilities Safety Association and the City of Brockville's
Arboricultural Specifications Manual
1.2. "boulevard" means the land owned by the City and located along the
sides of streets where trees, landscaping and sidewalks may be
055-2021
Tree Protection By-law
Page 2
located, bordered between the City right-of-way property line and the
street curb or road shoulder.
1.3. "corporation" means the Corporation of the City of Brockville.
1 .4. "parks supervisor" means the Supervisor of Cemetery and Parks, or
their authorized designate.
1.5. park trees means trees that have been purposely planted in public
parks, greenbelts and all other areas owned by the City.
1.6. "street" means a public highway which allows access to abutting lots.
1. 7. "street trees" means trees that have been purposely planted on the
City right of way.
1.8. "replaceable tree" means a City street tree or park tree designated for
replacement.
1.9. "city trees" means any City owned trees that have been purposely
planted on City property such as, street right of ways, parks,
cemeteries, greenbelts, any other City owned lands.
1.10. "qualified competent person" means any person deemed competent by
the Supervisor of Cemetery and Parks.
1. 11. "manual" means the City of Brockvllle, Arboricultural Specification
Manual as attached and forming part of By-law Number 055-2021.
1.12. "road allowance" means to the allowances originally laid out for roads
by a Crown surveyor, including both road allowance show on an
original survey and road allowances shown in a plan of subdivision.
Road allowances are generally sixty-six feet in width.
1.13. "right-of-way" means the legal right, established by usage or grant, to
pass along a specific route through grounds or property belonging to
another.
1.14. "public area" means any outdoor area that is open to the public for
public use, whether owned or operated by the City.
1.15. "private property" means any land owned by Individuals or
corporations other than the government.
055-2021
Tree Protection By-law
Page 3
1.16. "hydrovac excavation" means the process by which high pressure
water is used to break up dirt and material.
2.0
Responsibilities
2.1. It shall be the responsibility of the Parks Supervisor to administer the
requirements of the By-law including the planting, care, preservation,
protection, pruning and removal of street trees and park trees.
2.2. The Parks Supervisor shall be required and empowered to develop and
maintain arboricultural guidelines based on Good Arboricultural
Practices, detailing the rules, regulations, standards, and specifications
dealing with tree care in the municipality.
3.0
Approvals and Permits
3.1. No person shall without the express written permission of the Parks
Supervisor:
a)
Plant, prune, remove, cut above ground, treat, or otherwise
disturb any tree, shrub or other plant located on City property.
This provision shall not be construed to prohibit owners of
property adjacent to City property from watering any tree, shrub
or other plant located on such City property.
b)
Trim, prune or remove any tree or portions thereof if such tree
or portions thereof reasonably may be expected to fall on City
owned property and thereby to cause damage to persons or
property without the approval of the Parks Supervisor.
c)
Cut, tap, carve, transplant or in any other way damage any tree,
shrub or any other plant located on City property without the
approval of the Parks Supervisor.
d)
Attach any rope, wire, nail, sign, poster or any other man-made
object to any tree, shrub or other plant located on City property.
e)
Dig a tunnel or trench within an offset as outlined in this
document to any tree located on City property.
3.2. Section 3.1 above, shall not apply to the Parks Supervisor, an Agent of
the Parks Supervisor, a Contractor hired by the Parks Supervisor or
any person or Corporation who has obtained a permit or approval from
the Parks Supervisor to perform any of the above acts, save and
055-2021
Tree Protection By-law
Page 4
except in an emergency. The person receiving the permit or approval
shall abide by all requirements of Good Arboricultural Practices and
Schedule A - Arborlcultural Specification Manual attached to this by-
law.
4.0
Planting
4.1. Any and all tree planting on City property shall abide by Good
Arboricultural Practices.
4.2. Section 3.2 of the City of Brockville, Arboricultural Specification Manual
specifies the acceptable plan species for planting as street trees and
park trees and cemetery trees. All trees shall be in accordance with
this list unless otherwise approved by the Parks Supervisor in writing.
4.3. The spacing of street trees will be in accordance with the species size:
a)
small trees, approx. 6 m;
b)
medium trees, approx. 8 m;
c)
large trees, approx. 10 m,
d)
except in special plantings approved by the Parks Supervisor,
final tree spacing and placing will be approved by the Parks
Supervisor.
4.4. Any street tree or park tree removed shall be replaced with a new tree
selected from the acceptable plant species as list in Section 3.2 of the
Manual. The tree shall be planted on the same street or in the same
neighbourhood where the tree was removed, the final location shall be
determined as outlined in this document, arid the final decision shall
be approved by the Parks Supervisor.
4.5.
No person shall plan a street except in accordance with Section 3.3,
Spacing and Location Requirements.
4.6. This section does not prohibit the planting of street trees on City
boulevards by adjacent property owners, provided the planting
standards and Good Arboricultural Practices are adhered to, and prior
approval from the Parks Supervisor is obtained.
5.0
Public Tree Care
5.1. The Corporation shall have the right to plant, prune, maintain and
remove trees, plants or shrubs on all boulevards, rights-of-way, public
parks, and other City owned properties, as may be necessary to
055-2021
Tree Protection By-law
Page 5
ensure public safety or to preserve or enhance the symmetry and
beauty of such public grounds.
5.2. The Corporation may remove or cause to be removed, any tree or part
thereof which is in an unsafe condition or which by reason of its nature
is injurious to sewers, electric power lines, gas lines, water lines, or
other public improvements, or is affected with any injurious fungus,
insect, or other pest. All tree care, removal and replacement activities
will be carried out In accordance with Good Arboricultural Practices.
5.3. When it is determined that a tree growing on City property is a healthy
and a desirable tree, but it must be removed because of a project or
development, public or otherwise, public works or utility company
repair or involvement. The follow charges shall be levied to the project
or persons requesting such removal:
i.
The actual cost of the removal and replacement of the
tree;
ii.
the actual cost is to include all cost for the tree and stump
removal;
iii.
reinstatement of the existing ground cover, including
topsoil and sodding, asphalt, concrete etc. to the
satisfaction of the Parks Supervisor.
5.4. The removed tree shall be replaced in accordance with Section 3.2,
Acceptable Plant Species of the Manual, and tree species shall be
selected by the Parks Supervisor.
6.0
Public Utilities
6.1.
Public Utilities shall review with the Parks Supervisor a Utility Tree
Trimming Policy for the purpose of maintaining safe line clearance
prior to pruning any trees located on City property and shall carry out
all such work in accordance with the Standards and Practice as
outlined in the Electrical Utilities Safety Association, and the
International Society of Arboriculture (ISA)
6.2.
Public Utilities shall be required to obtain a permit prior to the removal
of any tree from City property. When it has been determined that the
tree is a healthy and desirable tree that should be retained, the costs
associated with the tree removal will be as outlined in Section 6.2 of
the Manual.
055-2021
Tree Protection By-law
Page 6
7.0
Pruning of Trees on Private Property
7 .1. The owner of any tree that overhangs any street or right-of-way shall
prune the branches so that such branches shall not severely obstruct
the light from any streetlight or obstruct the view of any street
intersection so that there shall be clear space of 4.5 metres above the
street surface or 3.0 metres above the sidewalk surface.
7.2. Said owner shall remove all dead, diseased, or dangerous trees, or
broken or decayed limbs which constitute a menace to the safety of
the public.
7.3.
No person shall undertake any work on City property without obtaining
approval from the Parks Supervisor.
7.4. The Corporation shall have the right to prune any tree or shrub on
private property when it interferes with the proper spread of light
along the street from a streetlight or interferes with visibility of any
traffic control device, sign or visibility triangle at Intersections. The
costs associated with this work maybe charged to the property owner
at the discretion of the Parks Supervisor.
7.5. Tree limbs that grow near high voltage electrical conductors shall be
maintained clear of such conductors by the Electrical Public Utility
Company.
8.0
Dead or Diseased Tree Removal on Private Property
8.1. The City shall have the right to cause the removal of any dead or
diseased tree on private property within the City, when such tree
constitutes a hazard to life and property, or harbors insects or disease
which constitutes a potential threat to other trees within the City.
Determination of such hazard will be by the Parks Supervisor, or
his/her appointed designate, and an inspection maybe completed by a
Certified Arborist.
8.2. The City will notify in writing the owners of hazardous trees that
removal must be done by said owners at their own expense within
ninety (90) days from the date the notice is served .. In the event of an
emergency or failure by any owner to comply with such provisions, the
City shall have the authority to remove such trees and Invoice the cost
of removal to the property owner in accordance with Section 6.3 of the
Manual. Unpaid invoices shall be added to the property owners tax
account.
055-2021
Tree Protection By-law
Page 7
9.0
Protection of Trees
9.1.
No person shall carry out any excavation or construction of any
building, structure, or street work near any tree on any street or other
publicly owned property without first obtaining the approval of the
Parks Supervisor.
9.2.
No person may carry out any work near any tree without protection
methods which may include guarding the tree with a good substantial
fence, not less than 1.2 m in height installed at the drip line of the tree
to prevent material from being stockpiled or excavated within the drip
line. If excavation work must be completed to the drip line, the Parks
Supervisor may request hydro excavation at the owner's cost. Should
the above not be followed and there is long term damage or death to
the tree, the person shall pay for the cost of removing and replacing
the tree at the Parks Supervisors discretion. All property owners are
responsible for any contractors that are providing services to their
property and cause damage or death to any City tree.
9.3.
No person shall deposit, place, store or maintain upon any public place
of the municipality any stone, brick, sand, concrete, or other material
which may impede the free passage of water and air to the roots of
any tree growing therein except by written approval of the Parks
Supervisor.
9.4.
Development constraints for trees located on City property for
removal, replacement and or protection shall be determined at the
time of the following: upon review of Plan of Subdivision or Building
Permit or Site Plan Control, or Excavation Permit.
9.5. No trees on any City owned islands shall be altered in any way without
approval of the Parks Supervisor.
10.0 Penalty and Remedies for Breach of Contravention of By-Law
10.1. Any person found to be in contravention of the provisions of this By-
law shall, upon conviction, be liable to a penalty as provided under the
Provincial Offences Act.
10.2. The costs imposed by this By-law constitute a debt of the owner to the
City, may be added by the Treasurer to the tax roll for the owner's
property and collected in the same manner as municipal taxes.
055-2021
Tree Protection By-law
Page 8
11. 0 Severability
If any provision of this By-law or application thereof to any person or
circumstance is held invalid by any Court, other provisions or
applications of the By-law which can given effect without the invalid
provision or application shall not be affected, and to this end the
provisions of this By-law are declared to be severable.
12.0 Enforcement
This By-law may be enforced by Police Officers, Peace Officers and By-
law Enforcement Officers of the Corporation.
13.0 Short Title
This By-Law shall be known as the "Tree Protection By-Law".
14.0 Conflict Resolution
Any conflict resolution between the Parks Supervisor and any other
party shall be solely decided by the Director of Operations.
Given under the Seal of the
Corporation of the City of Brockville
and passed this 22nd, day of June 2021
;;J
rx1)J;/?'c'(J~~-v! c?J /?Y
7
- City Clerk
1
055-2021, Schedule A
Arboricultural Specification Manual
Schedule A
Arboricultural Specification Manual
(pursuant to By-Law No. 055-2021)
The following manuals shall be followed as
part of the specification manual:
Ontario Landscape and Tree Planting Manual
International Society of Arboriculture (ISA)
Electrical Utilities Safety Association
Page 1
Arboricultural Specification Manual
(pursuant to By-Law No. 055-2021)
Section 1 - Introduction
This Arboricultural Specification Manual has been authorized by the Council
of the City of Brockville by By-law 055-2021 for the purpose of regulating
the planting, care, preservation, protection and replacement of trees on
public areas In the City of Brockville.
These specifications are to serve as a standard for the planting and
maintenance of all public trees. They will apply regardless as to whether the
actual work is performed contractually, by City forces or by private
individuals. As with any standard applied on a large scale, there will be
exceptions. So as to avoid unnecessary problems or damage to City trees,
exceptions to these specifications must be approved in writing by the Parks
Supervisor or their designate.
Section 2 - General Tree Guidelines and Specifications
2.0
A permit or approval must be obtained from the Parks Supervisor
before any person, firm, or organization either, for themselves or
another, plants, prunes, removes, or destroys any tree in or upon the
public right-of-way of any street, alley, park, cemetery, or any other
City owned land.
2.1
No permit shall be required of any Public Electrical Utility, their agents,
and contractors, engaged in line clearance maintenance, or City
employees doing such work in the pursuit of their public endeavors.
2.2
All utilities and City employees must receive a permit from the Parks
Supervisor for the removal of any tree from public property.
2.3
All Public Utilities, their agents, contractors, and City employees must
follow accepted Good Arboricultural Practices for maintenance, and as
outlined in this document.
2.4
All personnel utilized for work on or with trees and shrubs on public
property shall be trained to perform the work properly and safely in
accordance with the requirements of the Occupational Health and
Safety Act and amendments hereto.
2.5
Any work to City trees near or around electrical wires shall require that
all personnel utilized for such work will have completed the required
E.U.S.A. (Electrical Utilities Safety Association) training.
055-2021, Schedule A
Arboricultural Specification Manual
Page 2
2.6
Qualified competent persons shall be present when work is being
performed. This could be city staff, or contractors which are deemed
qualified by the Parks Supervisor.
2.7
All such work shall be conducted in a manner so as to cause the least
possible interference with or annoyance to others.
2.8
Any injury to persons, or damages to any improvement, vehicle, tree,
shrub, or structure while working with public trees shall be promptly
reported to the Parks Supervisor.
2.9
Any use of tools or equipment in unsafe condition or any application of
techniques or methods deemed unsafe to life, limb or property is
forbidden.
2.10 Pedestrian and vehicular traffic shall be allowed to pass through the
work areas only under conditions of safety and with as little
inconvenience and delay as possible.
2.11 Adequate barricades and warning devices shall be placed, and flagmen
stationed as necessary for the safety of persons and vehicles.
2.12 Proper street and sidewalk warning devices shall be In position as
required at all times while work on City trees is being performed.
2.13 No person shall dig any hole or trench without first obtaining locations
of the buried services in the area, from the proper local Public Utilities.
2.14 Whenever electric or telephone lines, gas lines, water lines or other
improvements, public or private, on a public area will be Implicated or
jeopardized by any authorized tree activity, the proper authorities of
the utilities involved shall be consulted prior to performing any work
activity and all requested precautions by any such authority shall be
complied with.
Section 3 - Tree Planting
3.0
Definitions
a)
street trees: street trees are herein defined as purposely planted
trees on the public right-of-way between the curb or road
surface and property line along the side of streets or in medians
of all streets, avenues, boulevards, or roadways within the City.
055-2021, Schedule A
Arborlcultural Specification Manual
Page 3
b)
park trees: park trees are herein defined as purposely planted
trees In public parks, greenbelts, cemeteries, and all other City
lands.
3.1
Planting Standards
a)
Public projects and areas including parks, streets, medians,
boulevards, sub-stations, the cemetery, treatment plants and
public buildings shall provide for street and park tree planting as
a part of the development process. The landscape plan for such
projects shall be approved by the Parks Supervisor and adhere
to the standards and specifications as outlined herein.
b)
Private projects shall provide for street tree planting as part of
the development process. Street trees shall be located on the
public right-of-way and adhere to the design objectives and
spacing and location requirements of this document ie: large
mature trees every 10 m, medium trees every 8 m and smaller
trees every 6 m.
Species selection shall be in accordance with
Section 3.2, Acceptable Plant Species of this manual. All tree
planting on the public right-of-way shall be approved by the
Parks Supervisor.
c)
For Site Plan Control Agreements and Plans of Subdivision where
the developer is not able to plant trees as required on City
property due to conflicts, the developer may choose to plant the
required trees on private property at the adjacent location.
These trees are a requirement of the agreement with the City
and shall be replanted by the private owner should they be
removed for any reason.
d)
Existing public properties shall receive new infill planting on an
ongoing basis. All removed City trees that were purposely
planted, either from parks, public buildings or streets shall be
replaced with a new tree In accordance with Section 3.2,
Acceptable Plant Species of this manual.
e)
Site criteria to be evaluated in determining tree planting
locations shall be:
i.
Visibility of site.
ii.
Probability of long-term tree survival.
iii.
Likelihood of private participation and financing.
iv.
Overall benefit to the community.
055-2021, Schedule A
Arboricultural Specification Manual
Page 4
f)
Public tree planting must be accomplished by the balled and
burlap covered, tree spade or container method. Bare root
plantings are never permitted.
g)
The following are the minimum sizes for plant material. Larger
sizes may be required to ensure survival or provide a landscape
effect:
i.
Shade trees
ii.
Ornamental trees
iii.
Evergreen trees
iv.
Shrubs
70 mm caliper
70 mm caliper
1.8 m height
14.0 litre container
h)
No single species shall make up more than 15% of the total City
tree population. This Is to prevent uniform disease susceptibility
and eventually uniform senescence. Therefore, the following
represents the minimum tree species variation for a given site.
Number of trees on
site
10 to 19
20 to 39
40 to 59
60 or more
Maximum percentage
of any one species at
site
50%
33%
25%
15%
i)
The following trees are not permissible as street tree plantings,
however they may be used as park trees:
i.
Acer Saccharinum - Silver Maple
ii.
Populus species - Poplars
iii.
Salix species - Willows
iv.
Genus Fraxinus - Ash (Can be used if resistant to Emerald
Ash Borer)
v.
Linden
vi.
Any species of Pine or Spruce
vii. Any species of Cedar
055-2021, Schedule A
Arborlcultural Specification Manual
3.2
Acceptable Plant Species
Page 5
a)
The following Is the list of trees which are permissible for tree
planting. The species to be planted shall be approved by the
Parks Supervisor. Other tree species may be considered on an
individual case basis and would be subject o the approval of the
Parks Supervisor.
Preferred Tree Type
(based on criteria such as cost, availability from local
nurseries, site suitability, and our geographical location)
Street
Park
Cemetery
Sugar Maple
X
X
X
Autumn Blaze
X
X
X
Crimson King
X
X
X
Oak
X
X
X
Linden
X
X
Red Pine
X
X
White Pine
X
X
Colorado Green Spruce
X
X
Difficult Planting Sites
(areas with limited space such as boulevards, and street
sides, with a higher exposure to salt, and possibly limited
moisture)
Street
Park
Cemetery
Ginkgo
X
Honey Locust
X
Ironwood
X
Freeman Maple
X
Bur Oak
X
055-2021, Schedule A
Arboricultural Specification Manual
3.3
Tree Friendly Sites
(open spaces, lots of room to grow, limited, or no exposure
to salt, with lots of unobstructed sun exposure)
Street
Park
Cemetery
Striped Maple
White Spruce
Red Pine
Tamarack
Beech
Drought Tolerant Sites
(significantly dry, and significantly dry areas
(Changing World Trees))
X
X
X
X
X
X
X
X
X
X
Street
Park
Cemetery
Pin Oak
X
X
Tulip Tree
X
X
Shag Bark Hickory
X
X
White Oak
X
X
Spacing and Location Requirements
Standard Planting Setbacks - All species *
Minimum distances between trees/large shrubs and
the following typical roadway elements:
street intersections
light standards/ transformers
traffic signs (stop signs, yield
signs etc.)
private approaches
(driveways)
fire hydrants/transformers
10.0 m
3.0 m
3.5 m
1.5 m
3.0 m
X
X
X
X
Page 6
055-2021, Schedule A
Arboricultural Specification Manual
hydro poles
bus stops
manholes
sidewalks/ curbs
underground utilities
buildings
3.0 m
3.0 m
3.0 m
1.0 m
1.5 m
1.5 m
-
as per City of Brockv/1/e Road Allowance Typical Sections
Page 7
3.4
At the intersection of roadways or vehicular access points, no plant
material with a mature height greater than 750 mm above the lowest
adjacent pavement elevation shall be planted within the visibility
triangle, measuring 10 m along the boundary and along each of the
intersecting roadways, measured from the point of intersecting curb
lines, except where engineering standards indicate and permit
otherwise.
3.5
No tree planting is permitted where the distance between a curb and a
detached sidewalk is less than 2.2 m. In addition, a planting area
defined by two curbs, a curb and a fence, or sidewalk and fence must
be a minimum of 2.2 m wide if street trees are to be planted.
3.6
All tree planting within the right-of-way for new subdivisions and along
collector and arterial streets shall be placed in the locations as outlined
in the current City of Brockville Road Allowance Typical cross-sectional
drawings. In existing subdivisions, where utilities allow, trees shall be
centered in the planting strip when the distance between the curb and
sidewalk is 2.2 m or greater.
3.7
No street tree planting is to be made closer to the street than 1.2 m
behind the back of the curb. The back of curb is the area closest to
the boulevard.
3.8
Larger maturing trees should be spaced approximately 10 m apart,
medium trees spaced approximately 8 m apart and smaller maturing
trees spaced 6 m apart. The Parks Supervisor may require wider
spacing If it is necessary for development of the tree or for safe use of
the street or sidewalk. When space is limited or to achieve certain
design effects, closer spacings may be considered.
055-2021, Schedule A
Arboricultural Specification Manual
Page 8
3.9
No tree shall be planted closer than 1.5 m from any driveway, private
sidewalk, or alley, nor shall a tree or shrub be planted In such a
manner that its eventual growth cannot be reasonably controlled so as
to avoid interference with or obstruction to any Improvements Installed
for public benefit.
3.10 Tree plantings made within the sidewalk must have a minimum of 2.0
m2 of cut out area. The tree must be set back from the gutter line of
the street a minimum of 1.2 m.
3.11 The cut-out area referred to Section 3.10 may be grated or otherwise
surfaced with a material which allows uninhibited infiltration and
exfiltration. The surfacing material must be approved for use by the
Parks Supervisor prior to installation.
3.12 No tree shall be planted within 1.5 m of any building or structure.
3.13 No street trees, other than those low growing species that do not
attain a mature height greater than 6 m, shall be planted under or
within 3 m of any overhead power lines Inclusive of streetlight or
service lines.
3.14 With buried utilities, there is to be a minimum of 1.5 m between
underground utilities and the trees edge of root ball. In cases where
this Is not possible the distance may be reduced to 0.75 m If approved
root deflectors are installed between the root ball and the underground
utility.
3.15 The root deflector shall be made from 6.5 mm rigid plastic, fiberglass,
or non-degradable material. It should extend vertically to the bottom
of the planting hole and extend horizontally 1.2 m from the center of
the root ball In each direction parallel to the underground utility.
3.16 No trees shall be planted within 3 m of any pad mounted transformer.
Section 4 - Planting Specifications
4.1
Plant Material
a)
Plant material shall conform to the specifications as set out In
the Ontario Landscape Tree Planting Guide. Material shall be of
standard quality, true to name and type and a first-class
representative of their species or variety.
055-2021, Schedule A
Arboricultural Specification Manual
Page 9
b)
Plants shall have normal, well developed branches and vigorous
root systems. They shall be healthy, vigorous plants free from
defects, decay, scald injuries, abrasions of the bark, Insects,
pests and all forms of infestation or objectionable
disfigurements.
c)
Balled and burlap covered plants shall be dug with solid balls of
adequate size. The balls shall be securely wrapped with burlap
or canvas, tightly bound with rope twine or wire basket. Allow
400 mm diameter root ball for every 25 mm of trunk diameter.
d)
The minimum sizes of plants are as specified in Subsection 3.1,
Planting Standards. Variances must be approved by the Parks
Supervisor.
e)
The Parks Supervisor may request to inspect any trees or shrubs
before they are planted.
4.2
Planting Methods and Techniques
a)
The planting methods shall adhere to the Ontario Landscape
Tree Planting Guide, or as stipulated below, for all planting on
City property.
b)
Circular pits with sloping sides shall be excavated for all balled
and burlap covered container plants. All pits should be at least 2
times wider than the ball and at least the depth of the soil ball.
c)
For all balled and burlap covered container plantings, the backfill
shall be 25% peat and 75% soil of a desirable structure, texture,
and PH for plant growth. The Parks Supervisor will decide If the
existing soil at each location is adequate for use in the backfill or
if soil will have to be brought in. Backfill shall be added and
tamped firmly around the ball or root system at 150 mm
increments until the pit is 2/3 full. Backfill soil to complete the
tree installation, water as required.
d)
For all plants moved with a tree spade, all holes and cavities
between the ball and surrounding soil should be filled. The ball
should be thoroughly soaked with water after planting.
e)
All plants should be centered in the pit and set at the depth of
the ball or slightly higher than they were when growing at the
nursery.
055-2021, Schedule A
Arboricultural Specification Manual
Page 10
f)
All evergreen trees greater than 1.8 m in height and any
deciduous tree (under 70 mm), insecure In the ground shall be
guyed. These methods will be approved by the Parks
Supervisor.
g)
Prior to digging any planting pit, it is necessary to check with the
utility companies for underground electric or telephone lines, gas
lines, water lines or any other Improvements, public or private.
h)
All tree and shrub planting shall be topped off with good quality
screened topsoil, and approved grass seed.
i)
A 200 mm watering dike will be constructed around all new tree
and shrub plantings when determined by the Parks Supervisor to
be necessary to ensure adequate irrigation.
j)
When planting a tree that will be surrounded by a hard surface1
there should be a minimum of 2.0 m2 of porous surface for trees
up to 100 mm in trunk diameter and 1.0 m2 for each additional
50 mm of trunk diameter.
4.3
Planting Standards of Workmanship
a)
Trees and shrubs should not be dug, balled or burlap covered or
moved with a tree spade during the active growth period, unless
the ball is large enough to ensure survival.
b)
Plant material shall be handled In a manner so as to cause the
least amount of damage during the planting process.
c)
Evergreen trees with an excessively bushy form of growth shall
have the boughs tied up with rope or twine during transporting
and planting to avoid damage to the foliage and branches. After
planting the boughs should be released.
d)
Balled and burlap covered, and container plants shall always be
handled by the soil ball. Under no circumstances should they be
dragged, lifted or pulled by the trunk or foliage parts in a
manner that will loosen the roots in the ball.
e)
In cases where trees or shrubs are loose in a soil ball, the ball
shall be secured with twine or burlap before transporting to the
planting site.
055-2021, Schedule A
Arboricultural Specification Manual
Page 11
f)
On the job site, plants shall be handled, secured, or covered so
as to prevent damage from wind or vibration. Plants should
never be thrown or bounced off a truck or loader to the ground.
g)
Plant materials shall be planted the day it is taken to the
planting site or It should be watered and covered and placed in a
shade area to prevent dehydration.
h)
Any abrasions of the bark or broken limbs or branches caused in
the planting operation should be treated or corrected
immediately.
i)
In cases where trees are apt to have their trunks scarred during
the planting operation the trunk should be protected with wrap
or padding.
j)
Excavated plant pits that will be left open when work is not in
progress or pose an immediate and considerable hazard to traffic
shall be adequately barricaded with qualified warning devices.
k)
All twine, rope or wire and plant labels secured around the trunk
shall be removed after planting is completed.
I)
Trees or shrubs that have their soil ball secured in a wire basket
shall have the wire bent back and down around the ball and the
top 1/3 cut off after the plant is placed and centered in the pit
before backfilling occurs.
m) Clean up of any soil, branches or other debris resulting from any
tree or shrub planting shall be promptly completed, The work
area shall be kept safe at all times until the clean up operation is
complete. Under no conditions shall the accumulation of soil,
branches or other debris be allowed upon the public property in
such a manner as to result in a public hazard.
Section 5 - Tree Maintenance
5.1
Maintenance Standards - All maintenance guidelines shall follow the
Ontario Horticultural Guide unless otherwise specified.
a)
All newly planted City street trees that are deciduous shall be
inspected for pruning requirements on a rotational basis of not
more than fifteen (15) years. Pruning specifications shall be
055-2021, Schedule A
Arboricultural Specification Manual
Page 12
completed as per good arboriculture practices, as referenced In
the International Society of Arboriculture (ISA) guidelines.
b)
City trees shall be managed in such a manner as to promote
their general health by providing the necessary cultural practices
which may include insect and disease control, fertilization,
irrigation, staking, guying, wrapping, cabling, bracing, and
pruning.
c)
City trees shall be maintained in such a manner as to not
endanger, interfere, or otherwise conflict with requirements of
safe public use of an area.
d)
Any City tree which because of habit of growth, age, condition,
or disease becomes a hazard to public safety or obstructs a clear
view of streets, signs, signals, or intersection, thus creating a
hazard, shall be maintained to correct the problem. Hanging
limb and branch growth shall be maintained 6 m above streets
and 3.5 m above sidewalks.
e)
Every owner of any tree or shrub overhanging any street or
right-of-way within the City shall prune the branches so that
such branches shall not interfere with the safe use of the street
or sidewalk or obstruct the view of any street intersection. The
City shall have the right to prune any tree or shrub on private
property when it interferes with the safe use of the street or
sidewalk or when it interferes with the visibility of any traffic
control device or sign. The cost for the above work may be
charged to the property owner at the discretion of the Parks
Supervisor.
f)
Any tree which, because of an epidemic disease or insect
infestation, poses a threat to other trees or plants in the
community shall be treated or removed and disposed of in an
appropriate manner so as to control the spread of the problem
organism.
5.2
Pruning and Removal Specifications
a)
No tree shall be cut back in such a manner that its health will be
impaired. An exception to this may occur in tree removal or
emergency relief of an immediate danger to persons or property.
Any such emergency procedures must be reported promptly to
055-2021, Schedule A
Arboricultural Specification Manual
Page 13
the Parks Supervisor with plans for completion or follow-up work
submitted for approval.
b)
Authority to prune street trees does not include the cutting back
of sound, healthy tree branches in excess of 150 mm in diameter
(outside bark) unless specifically described and written into the
permit form by the Parks Supervisor or if required by accepted
arboricultural standards in the course of utility line clearance
work.
c)
When tree pruning cuts are made to a side branch, such
remaining branch must possess a basal thickness of at least 1/3
of the diameter of the wound so affected. Such cuts shall be
considered proper only when the remaining branch is vigorous
enough to maintain adequate foliage to produce woody growth
capable of healing the cut within a reasonable period of time.
d)
All final tree pruning cuts shall be made in such a manner as to
favor the earliest possible covering of the wound by natural
callus growth. Excessively deep flush cuts which produce large
wounds or weaken the tree at the cut shall not be made. Tree
pruning cuts should be made just outside the branch collar.
e)
Tree branches shall be removed and controlled in such a manner
as not to cause damage to other parts of the tree or to other
plants or property.
f)
All tools used on a tree known to contain an infectious tree
disease shall be properly disinfected immediately after
completing work in such a tree.
g)
All cutting tools and saws used in making tree pruning cuts shall
be kept sharpened adequately to result In final cuts with a
smooth surface and secure bark remaining adjacent thereto.
h)
Whenever pruning cuts are to be made while removing branches
too large to hold securely in one hand during the cutting
operation, the branches shall be cut off first one to two feet
beyond the intended final cut. Then the final cut shall be made
in a manner to prevent unnecessary tearing back of the bark and
wood.
i)
Any cutting of tree roots, other than when in the process of tree
removal, shall give due consideration to the future welfare of the
055-2021, Schedule A
Arboricultural Specification Manual
Page 14
tree. Proper action shall be taken, utilizing the latest scientific
techniques, to treat resulting wounds to prevent entry of decay
organisms.
5.3
Standards of Workmanship for Pruning and Removal
a)
Cleanup of branches, logs or any other debris resulting from any
tree pruning or removal shall be promptly and properly
completed. The work area shall be kept safe at all times until
the cleanup operation is completed. Under no condition shall the
accumulation of brush, branches, logs, or other debris be
allowed upon a public property in such a manner as to result in a
public hazard. All cleaning efforts must be immediately carried
out, as soon as the tree work is completed. (Immediately means
by end of that day, or next morning)
b)
The use of climbing spurs or spike shoes in the act of pruning
trees is prohibited.
c)
Under no condition shall it be considered proper to leave any
severed or partially cut branches in the upper portion of any tree
being worked on after the tree workers leave the scene of the
operation.
d)
Whenever large tree sections are being cut In a treetop that may
endanger the public or property, such sections shall be secured
by ropes and lowered safely in a controlled manner.
e)
Unless the tree work area is totally barricaded or otherwise kept
safe while pruning or removing trees, at least one responsible
tree worker shall serve to co-ordinate safe operations on the
ground and in the immediate vicinity at all times when work
operations are in progress.
f)
All removal of public trees shall be done in a manner so that the
remaining stumps will be at least 200 mm below ground level
unless special exemption is approved by the Parks Supervisor.
g)
Excavations resulting from tree or shrub removal must be
promptly filled into normal ground level with a clean earth, the
fill properly compacted, and free of debris.
055-2021, Schedule A
Arboricultural Specification Manual
Page 15
h)
Public trees, utility poles, street signs, hydrants or any other City
owned appurtenances shall not be used as an anchor to winch
from in the process of removing other trees.
i)
When removing a tree, the act of cutting tree roots and then
leaving the work scene with a standing tree or any part thereof
having little, or no support is prohibited.
5.4
Tree Pruning
a)
"complete prune" - This operation of tree pruning shall consist of
the total removal of those dead or living branches which may be
considered a menace to the future health, strength, and
attractiveness of the tree. Specifically:
i.
Properly remove all dead and dying branches of 6 mm and
over in diameter.
ii.
Remove all broken branches or any loose branches lodged
in the tree.
iii.
Remove all dead and live stubs of previously broken or
poorly cut branches.
iv.
Remove any live branches which interfere with the tree's
structural strength and healthful development, which will
include the following:
- Branches that will rub and abrade a more important
branch.
- Branches of weak structure that are not important to the
framework of the tree.
- Branches that, if allowed to grow, would wedge apart the
junction of more important branches.
- Branches with twigs and foliage obstructing the
development of more important branches.
- Branches forming multiple leaders In a single leader type
tree.
- Branches near the end of a limb which will produce more
weight or offer more resistance to wind that the limb is
likely to support.
- Undesirable sucker and sprout growths.
- Selective removal to one or more developing leaders
where multiple branch growth exists near the end of
broken or stubbed limbs.
055-2021, Schedule A
Arboricultural Specification Manual
Page 16
- Removal of branches that project too far outward beyond
an otherwise symmetrical form.
- Removal or severance of any exposed roots that restrict or
act in a girdling manner and prevent proper expansion and
growth of other major roots or restrict the base of the tree
trunk.
v.
All final cuts shall be made just outside the branch collar.
Extremely deep cuts which produce excessively wide
wounds or weaken the tree shall not be made.
b)
Minimum or Safety Prune - This operation of tree trimming shall
consist of the minimum performance necessary to correct one or
more extremely and undesirable conditions existing within a tree
which may be hazardous to persons or property. Specifically:
i.
Remove all dead and dying branches of 50 mm or more in
diameter.
ii.
Remove all broken or loose branches 50 mm or more in
diameter.
iii.
Reduce the length of branches which extend excessively
beyond the perimeter of an otherwise symmetrical form.
iv.
Cut back ends of branches and reduce weight where
excessive overburden appears likely to result in breakage
of supporting limbs. Such cutting back shall not include
the removal of any live, healthy branches in excess of 150
mm in diameter unless specific approval is given by the
Parks Supervisor,.
c)
Head Back Prune - This operation shall consist of reducing the
height and/or spread of a tree by not more than 1/3 and shall
only be applied to trees when such work is necessary to control
extended growth which may endanger overhead utility lines or
interfere with adjacent structures.
i.
This form of pruning trees shall be done by means of a
method called "drop crotching" which serves to shorten
branch structure and thereby limits the extent of the
foliage canopy to a natural appearing margin. This action
consists of removing perimeter branches at the lower
junction with shorter side branches.
055-2021, Schedule A
Arboricultural Specification Manual
Page 17
ii.
No cuts on living branches shall be made in excess of 150
mm in diameter without first securing specific consent of
the Parks Supervisor (or his appointed designate).
iii.
Extended perimeter branches shall be properly cut at their
junction with lower branches having a basal diameter of at
least 1/3 of the diameter of the cut so affected.
iv.
The remaining lower branches shall be retained intact to
form a reduced foliage perimeter at a specific height
and/or spread.
v.
This technique of tree pruning shall be applied only when
larger growing trees endanger overhead utility lines or
where excessive growth of trees interferes with adjacent
structure or otherwise creates a specific hazard to persons
or property.
vi.
Head back prune should not be attempted or used if the
metabolism of a tree would be seriously unbalanced by the
use of this technique or where the structure of the tree
would be weakened by such action. Trees not repairable
shall be removed rather than pruned with this method.
d)
Spot Pruning - This operation of pruning shall consist of the
removal of one or more branches localized in a particular area of
the crown of a tree. Specifically:
i.
Trees shall be pruned in such a manner as to prevent
branch and foliage interference with requirements of safe
public passage. Over street clearance shall be kept to a
minimum of 6 m above the paved surface of the street and
3.5 m over the surface of the public sidewalk or pedestrian
way.
ii.
Sucker growth shall be removed in its entirety to ground
level. Exceptions are allowed for young trees which would
be irreparably damaged by such trimming actions and
wanted to be left as desirable trees.
iii.
Individual or scattered dead or broken limbs shall be
promptly and properly removed without the necessity of
performing other work not immediately urgent for
055-2021, Schedule A
Arborlcultural Specification Manual
Page 18
protection of the public or property, or the health of the
tree.
Section 6 - Tree Removal
6.1
Criteria
The City of Brockville shall make every attempt to preserve the
existing tree population on boulevards, streets, cemetery's, and parks
and ensure the future existence of the City's tree resource by the
planting of as many or more trees than must be removed due to
death, decay, infection, hazardous condition, act of God, or
construction occurring in the area.
The following represents the tree removal criteria used to prevent
indiscriminate removal of trees from City property. Wildlife habitat is
considered as a factor in making tree management and removal
decisions. City trees may be removed only when one or more of the
following criteria is met:
a)
The tree is infected with an epidemic insect or disease where the
recommended control is not applicable, and removal is the
recommended practice to prevent transmission.
b)
The tree poses an extreme nuisance to public or private property
due to its species, size, location, or decaying condition. The
nuisance could be caused by excessive limb breakage,
continuous sewer blockages, recurring sidewalk, or driveway
damage. This would be investigated and approved on a case-by-
case basis by the Parks Supervisor.
c)
The tree poses a severe safety hazard that cannot be corrected
by pruning, transplanting, cabling, or other treatments.
d)
The tree severely interferes with the growth and development of
a more desirable tree.
e)
The aesthetic values of the tree are so low or negative that the
site is visually enhanced by the tree's removal.
f)
Work improvements including driveway installations, boulevard
parking, street widening, sidewalk construction, utility
installation, building construction, are required to be made
055-2021, Schedule A
Arboricultural Specification Manual
Page 19
around the tree which will kill, severely debilitate, or render it a
hazard.
g)
Preservation of the tree, when adjacent property is improved or
developed, Is not cost effective.
When the decision to remove a
tree has been made, a tree must be planted for the tree that
was removed. The cost of the tree removal, and replacement
will be at the cost of the constructor.
6.2
Costs for removal of healthy trees from City property
The City shall assume the cost for removal of all street and park trees
which In its opinion require removal due to death, decay or
deteriorating condition, or present a hazard or extreme nuisance to
public or private property.
a)
In its determination of the removal of any nuisance tree, the City
will investigate and consider all alternatives to alleviate the
nuisance concern. This determination will weigh the costs of
correcting the nuisance concern through other means than
removal. In each of these cases, every effort shall be made to
preserve the tree.
b)
When it is determined that a tree growing on City property is a
healthy and a desirable tree that could be retained but it must
be removed because of a public or private project or
development, or emergency, and utility company work, there
shall be the following charges to the project or persons
requesting the removal:
i.
The actual cost of the removal of both tree and stump,
including backfill covering and sodding of the area where
applicable.
ii.
Costs for any inspections and reports from a Certified
Arborist. The actual cost to purchase and plant a
replacement tree selected in accordance with Section 3.2,
055-2021, Schedule A
Arboricultural Specification Manual
Acceptable Plant Species of this manual.
Page 20
iii.
Monies received through the application of this policy shall
be transferred to a Tree Maintenance Reserve Fund to be
used solely for the purchase and Installation of trees
during the City's normal tree planting program.
6.3
Partial Ownership of Tree
When it is determined by means of a survey that a tree meeting one
or more of the above criteria for removal is located with a portion of its
trunk on City property, and a portion of its trunk on private property,
the following procedure will apply:
a)
Where a tree has over one half of its trunk diameter located on
City property (has grown to encroach on private property), the
City will be responsible for the removal and/or maintenance to
the tree.
b)
Where a tree has over one half of its trunk diameter located on
private property (has grown to encroach on City property), the
City will pay that portion of the cost of removal or maintenance
to the tree, equal to the percentage of the tree located on city
property, (le: tree is 75% on private property and 25% on City
property, the City will pay 25% of the removal or maintenance
costs). All costs shall be submitted to the Parks Supervisor for
approval prior to the work being completed.
c)
Where a tree or any part(s) thereof overhangs or undermines or
creates root problems on any City lands, the City may remove,
trim, excavate or take whatever measures are necessary to
rectify the problem. The costs to complete the said works shall
be determined based on the physical location of the truck and as
outlined under item a) and b).
6.4
Notification to Property Owners
Once it is determined that a tree located on City property needs be
removed because it has been deemed "dead", "dying", or "diseased",
no written notice shall be given to any adjacent property owners.
A
written notice is to be submitted to the adjacent property owners (in a
30 m radius of the tree in question) if the tree is of a healthy nature,
and the removal is deemed required. The adjacent property owners
will be given at least ten (10) days from the date of the written notice
055-2021, Schedule A
Arboricultural Specification Manual
Page 21
to appeal the decision of the Parks Supervisor. Unresolved appeals
between the Parks Supervisor and all other parties including property
owners will be decided by the Director of Operations. For tree removal
emergencies see Section 6.6, Emergency Situations of the manual.
055-2021, Schedule A
Arboricultural Specification Manual
6.5
Award of Contract
Page 22
Once the removal of a specific tree or trees has been determined, the
City procurement policy shall be followed. The removal will be awarded
as per City policies.
6.6
Emergency Situations
If a tree located on City property Is found to create an immediate
danger to utilities, Infrastructure, signs, buildings, monuments,
shelters, other trees, any property or residents, the Parks Supervisor
will have the right to authorize the immediate removal of the tree at
its earliest convenience, eliminating the grace period for "Notification
to Property Owners".
6.7
Stump Removal and Future Care
a)
Tree removals from City property will also include the removal of
the tree stump to a depth of 200 mm below grade wherever
possible.
b)
The resulting stump hole will have the wood chips created from
stump grinding, removed. The hole shall be filled with a good
quality topsoil, compacted and levelled to the surrounding grade.
Sod will be applied and dressed with an appropriate covering of
high quality grass seed. Should buried utilities prevent the
removal of the stump by grinding methods, alternative
arrangements will be determined by the Parks Supervisor.
6.8
Tree Replacement
a)
Any City tree removed from City property will be replaced with a
new tree. The species to be planted must be selected in
accordance with Section 3.2,
055-2021, Schedule A
Arborlcultural Specification Manual
Page 23
Acceptable Plant Species of this manual and planted in
accordance with the specifications outlined herein.
b)
The replacement tree will be planted on the City boulevard, as
near to the location of the removed tree as possible. If this
location is not suitable, the trees will be planted somewhere on
that street or within the immediate neighbourhood on City lands,
or any appropriate lands within the City.
Section 7 - Tree Protection and Preservation Guidelines
The following specifications are Intended to prevent unnecessary damage
and destruction to City trees. The specifications describe protective
measures required to safeguard trees from contractor operations,
equipment, and vehicles where such trees are not designated for removal.
The specifications also cover the installation of barriers.
7 .1
Definitions
a)
Drip line - means the location on the ground surface directly
beneath a theoretical line described by the tips of the outermost
branches of the tree.
b)
Barrier - means fence consisting of approved material, supported
by steel posts and being a minimum of 1.2 m high without
breaks or unsupported sections.
7 .2
Construction Constraints
a)
Written authorization must be granted by the Parks Supervisor
prior to any of the following activities being undertaken, except
in an emergency:
i.
Excavating for any trench, tunnel, or ditch into the root
zone within the drip line or a .minimum 3 m of any City
tree.
ii.
Attaching or installing a metal material, signs, cables,
nails, wire or other things foreign to the natural structure
of the tree.
iii.
Treating the soil within the root zone of any tree with a soil
sterilant.
055-2021, Schedule A
Arboricultural Specification Manual
Page 24
b)
All trees on any street or other publicly owned property near any
excavation or construction site of any building, structure, or
street work, shall be guarded with a good substantial fence, not
less than 1.2 m high and 2.5 m square and all building material,
dirt or other debris shall be kept outside this barrier.
c)
No person shall deposit, place, store or maintain upon any public
lands of the municipality any stone, brick, sand, concrete, or
other materials which may impede the free passage of water and
air to the roots of any tree growing therein except by written
approval of the Parks Supervisor.
d)
Heavy equipment should use caution as to not compact the soil
over the root zone of existing trees. Equipment or vehicles
should not be parked, repaired, or refueled, within the drip line
area of any tree not designated for removal. Restricted
equipment access routes should be established.
e)
Curb cuts should not be closer than 1.5 m from the trunk of a
tree. New paving or asphalting should not be done any closer
than 1.5 m from any tree trunk.
f)
New sidewalks, paving or asphalting must allow breathing space
for tree roots. The following should be used as a guideline:
i.
trees up to 100 mm in trunk caliper, 2.0 m2. of porous
area is required.
ii.
each additional 50 mm of tree caliper, 1.0 m2 more is
required.
g)
Where grade change is required, the same area (2.0 m2 for 100
mm caliper and 1.0 m2 for each additional 50 mm of trunk
caliper) must be provided either by construction of a dry well,
where the level is to be raised or by building a retaining wall,
where the level is to be lowered. Typically, a dry well or creating
a wall around a tree, requires remedial watering. There is a limit
to the height/depth of both approaches.
h)
Avoid cutting surface roots wherever possible. Sidewalks and
paving levels should be contoured sufficiently to avoid such
cutting.
i)
Excavation involving root cuts should be done rapidly. Make
smooth, flush cuts on tree roots. Backfill before the roots have a
055-2021, Schedule A
Arboricultural Specification Manual
Page 25
chance to dry out and water the tree Immediately. Hydro-Vac
Excavation may be directed by the Parks Supervisor, as a root
friendly alternative.
j)
Where many roots have to be removed, prune branches out of
the top of the tree to restore proper top to root balance.
k)
If trees are In full leaf during the construction phase, supply
supplemental Irrigation and nutrients.
7.3
Development Constraints
a)
Development proposals for public open space, plans of
subdivision right of ways and private lot developments with trees
on City property shall be required to include a complete
landscape plan showing all existing trees. Trees to be saved and
removed shall be indicated on the landscape plan and approved
by the Parks Supervisor.
b)
No tree clearing or tree removal within the plan located on City
property shall be undertaken unless such clearing or tree
removal is a consequence of road, service construction,
construction of a noise barrier, installation of infrastructure,
installation of utilities or for a storm water management system.
c)
Any field work or inspections required by City staff as a
consequence of development requirements shall be paid for by
the property developer/owner.
d)
The developer/owner shall be required to supply and plant at
their cost, one (1) tree for each tree removed. The new tree
maybe planted on their lot or on City property as directed by the
Park's Supervisor in accordance with Section 3.2, Acceptable
Plant Species of this manual.
7 .4
Barriers for Tree Protection
a)
Barriers for tree protection shall be erected prior to
commencement of any development or construction activities so
as to provide a continuous barricade between trees and the work
area. The barricade shall be maintained erect and in good repair
throughout the duration of construction operations and shall be
removed upon completion of the work and disposed of outside
the right of way.
055-2021, Schedule A
Arboricultural Specification Manual
Page 26
b)
The barrier shall be placed at the drip line of trees or wood lot
edges unless this is inadequate to provide a 1.5 m buffer zone
between the barrier and the limit of grading. The barrier may be
placed within the drip line if necessary, to provide a buffer zone
of up to 1.5 m. Under no circumstances shall it be placed less
than 0.5 m from the circumference of a tree trunk. When the
trunks are less than 4.5 m apart, the tree shall be considered a
group, and the barrier shall be placed to form a continuous
barricade.
c)
The barrier shall consist of a good substantial fence, not less
than 1.2 m high and all material, dirt and other debris,
construction equipment or vehicles shall be kept outside of the
barricaded area.
055-2021, Schedule A
Arboricultural Specification Manual
ADDENDUM "A"
GUIDE FOR PLANT APPRAISAL
Page 27
All trees subject to removal shall be evaluated by a Certified Arborist and /
or the Parks Supervisor prior to removal.