The purpose of this chapter is to establish
Town policy and protective regulations regarding the planting, maintenance,
protection, preservation and removal of public trees to protect the
health, safety and welfare of the citizens of Portsmouth.
Definitions of related terms used in this chapter
and in educational materials created by the Tree Commission can be
found below:
ARBORIST
A person engaged in the professional practice of tree care,
licensed by the State of Rhode Island as a certified arborist.
CALIPER
The diameter of any tree trunk at breast height, 4 1/2
feet above the ground.
DESTROY
Any intentional or negligent act which may reasonably be
expected to cause a tree to die within a period of three years, including
but not limited to damage inflicted upon the root system by machinery,
storage of materials to cause compaction, substantially changing the
natural grade at the root system or around the trunk, excessive pruning
or paving with concrete, asphalt or other impervious materials.
DISEASED TREE
A tree or part thereof which has been blighted or defaced,
causing it to decline.
DRIPLINE
A vertical line extended from the outermost portion of a
tree canopy or crown to the ground.
PLANTING PLAN
A document detailing the proposed park or public place, site,
street widths, curbs, parking strips, driveways, sidewalks and adjacent
structures accurately defined to scale, the proposed location of each
tree, together with the location of each existing tree within the
proposed site in scaled relation to the other features of the plan,
the species of each and every tree proposed to be planted and those
already existing within the proposed site, either indicated on the
plans or referenced with a number with a key list.
PROTECTED TREE
Any public tree which is of such interest to the Town because
of its type, age, size or historical association that it shall be
protected pursuant to this chapter.
PRUNING
The removal of any branches greater than two inches in diameter.
PRUNING STANDARDS
Those standards set forth by the International Society of
Arboriculture, Western Chapter, dated May 9, 1988, as amended.
PUBLIC NUISANCE
A tree or part of a tree that constitutes a hazard to life
or property, or harbors insects or disease that constitutes a potential
threat to other trees within the Town, or a health hazard to the citizens
of the Town.
PUBLIC TREE
All trees now or hereinafter growing in any public right-of-way,
park or public property within the Town, except those under the jurisdiction
or control of the State of Rhode Island or any department or agency
thereof.
REMOVAL
The uprooting or severing of the main trunk of the tree,
or any act that causes or can reasonably be expected to cause the
tree to die.
REPLACEMENT TREE
Any tree that is planted to replace an existing tree that
must be or has been removed. Replacement trees must have a minimum
diameter breast height (DBH) of 2 1/2 to three inches or 12 to
14 feet in height. The Tree Warden may require a larger size or multiples
of trees based on the size and value of the tree(s) to be replaced.
TREE PIT
The hole dug in which the tree is to be placed for planting.
TREE TOPPING
The cutting back of limbs and stubs larger than three inches
in diameter within the tree's crown to such a degree as to remove
the normal canopy and disfigure the tree.
TREE WARDEN
The arborist appointed as the designated, qualified official
of the Town assigned to carry out the enforcement of this chapter
as well as additional duties under state law.
TRIMMING
The removal of nonessential branches less than two inches
in diameter.
The Tree Warden shall be appointed by the Town
Council. The Tree Warden shall be an experienced arborist, certified
by the State of Rhode Island. The appointment and duties of the Tree
Warden shall be in accordance with R.I.G.L. Chapter 2-14, and as defined
in R.I.G.L. § 2-14-5, and R.I.G.L. Chapter 2-19, which governs
the licensing of arborists.
Any person desiring to plant a tree on a public
street or in a public place must follow all planting guidelines, including
location and species, as provided by the Tree Commission's public
education literature.
The provisions of this chapter may be waived
by the Director of Public Works, in consultation with the Tree Warden,
in the case of emergencies, such as winter storms, tropical storms,
hurricanes or other natural or man-made disasters, so that they in
no way shall hinder private or public works efforts to restore order
to the Town of Portsmouth. All emergency procedures shall, to the
degree practical, follow the standards of this chapter.