358 11th St Arborist Letter Magnolia Tree Marc White/I.S.A. Certified Arborist FL-5641-A
Tree Risk Assessment Qualified
Report
358 11th Street
Atlantic Beach, FL 32233
Marc White/ISA Certified Arborist#FL-5641-A/May 19, 2023
ISA Tree Risk Assessment Certified
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Marc White/I.S.A. Certified Arborist FL-5641-A
SCOPE:
My assignment was to inspect and assess the defects in an approx. 25"
D.B.H. Southern Magnolia (Magnolia grandiflora).
METHODOLOGY:
I performed a LEVEL 2 and LEVEL 3 Tree Risk Assessment based
on the ANSI A-300 (Part 9, 2017) Tree Risk Assessment standards
and used the methodology defined in the International Society of
Arboriculture's Best Management Practice for Tree Risk Assessment
(2017). I considered people near the tree, the neighboring homes, and
garage as likely to be impacted if the tree failed. I used a 2-year time
frame for the assessment.
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Marc White/I.S.A. Certified Arborist FL-5641-A
OBSERVATIONS:
The Tree:
The tree is a 25"D.B.H. Southern Magnolia(Magnolia grandiflora). The tree is
approx. 65 feet tall, with an approx. 40-45' crown spread. This tree is located in
the right, rear backyard (southwest corner of property).
Tree Health:
The tree is of normal health and vigor. Normally, this tree would be considered in
good health, but this tree has major defects so, it will be getting a poor rating.
Defects and Conditions of Concern:
Doing a Level 2 Visual Inspection, I noticed the tree had a large "V" shaped
codominant union with a large amount of response wood. There is a lot a large
amount of decayed material inside the included bark area. There are deep "V"
recesses, which is another form of response wood caused from repeated flexing
and twisting. Each section above the codominant union, (one reaching to the West
one reaching to the East) have a large section of decay where another codominant
union previously failed on each of these sections.
The weight above each of these failed codominant unions, with the amount of
decay present will eventually cause the tree to fail in these areas.
There are also heart rot decay and bracket fungi present.
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Marc White/ I.S.A. Certified Arborist FL-5641-A
Analysis:
The Primary Concern:
This tree has already failed multiple times, leaving defects that will cause future
failure. The main codominant union, above the trunk, is also defective and will
more than likely fail in the near future as well.
There are no mitigation options.
Reducing more than 25% of the canopy will violate ANSI A300, Section 1.
Installing a cable system could not properly be done in accordance with ANSI
A300, Section 5.
Targets:
Human/Children—there are children's play areas in nearby backyards. Houses,
garages, pools and screen enclosures (multiple structures).
Overall Risk Rating:
Likelihood of Failure—Imminent
Likelihood of Impacting Target—High
Likelihood of Failure and Impact—Very Likely
Consequence of Failure—Severe
This gives the tree an EXTREME overall Risk Rating
Additional Concerns:
Only Certified Arborists that have TRAQ qualifications and certifications should
assess risk in trees. The opinion of non-qualified individuals should get little or no
validity.
A TRAQ evaluation is based on normal conditions. It gives no option for
extreme weather conditions (hurricanes, tornadoes, thunderstorms with high
winds and lightning). All of these things mentioned are not normal and are not
considered in a TRAQ evaluation. If there is any place where these conditions
are the norm, it would be Florida. Just wanted to add this to my assessment
because in Florida, these conditions are always a factor.
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Marc White/I.S.A. Certified Arborist FL-5641-A
Risk Rating Explained:
What does an Extreme Overall Risk Rating mean?
The extreme-risk category applies in situations in which failure is "imminent" and
there is a high likelihood of impacting the target, and the consequences of the
failure are "severe". The tree risk assessor should recommend that mitigation
measures be taken as soon as possible. In some cases, this may mean immediate
restriction of access to the target zone area to avoid injury to people.
Marc White/I.S.A. Certified Arborist FL-5641-A
Risk Mitigation Options:
These are some mitigation options that could be considered"ONLY" by the owner
of the tree.
• Removal
Assumptions and Limiting Conditions:
The level 2 and 3 Inspections that were performed on this tree were all based
on the conditions that can be seen at ground level. I used hammers, probes,
and boring devices to detect decay and poor attachment. There very well may
be other defects that are hidden in the roots, internally of the trunk and other
areas of defective attachment. No other trees were inspected on this property
in this report.
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Marc White /I.S.A. Certified Arborist FL-5641-A
Disclaimers:
Although all the recommendations in this report are based on sound and accepted horticultural practices,
the author cannot be held responsible for the final outcome of the recommendations,or any liabilities
associated with this project. Tree inspections, in this case, do not cover internal cavities,structural
defects,or diseases with non-visible symptoms.
Trees inherently pose a certain degree of hazard and risk from breakage,failure or other causes and
conditions.Recommendations that are made by The Branch Manager Tree Service are intended to
minimize or reduce hazardous conditions that made be associated with trees.However,there is and there
can be no guaranty or certainty that efforts to correct unsafe conditions will prevent breakage or failure of
the tree.Any recommendations made should reduce the risk of tree failure,but they cannot eliminate
such risk,especially in the event of a storm or any act of God.There can be no guaranty or certainty that
all hazardous conditions will be detected.Common sense,experience, and professional judgment are
required of the trained Arborist.Any changes to an established tree's environment can cause its decline,
death and/or structural failure.
Arborists cannot guarantee that a tree will be healthy or safe under all circumstances,or for a specified
period of time.Arborists are tree specialists who use their education,knowledge,training,and experience
to examine trees,recommend measures to enhance the beauty and health of trees,and attempt to reduce
the risk of living near trees.Clients may choose to accept or disregard the recommendations of the
arborist,or to seek additional advice.
Possession of this report or a copy thereof does not imply right of publication or use for any purpose by
any other than the person to whom it is addressed,without the prior expressed written or verbal consent
of the consultant.
Sketches,diagrams,graphs,drawings,and photographs within this report are intended as visual aids and
are not necessarily to scale and should not be construed as engineering or architectural reports or surveys.
The reproduction of information generated by other consultants is for coordination and ease of reference.
Inclusion of such information does not constitute a representation by the consultant as to the sufficiency
or accuracy of the information.
The information contained within this report is true to the best of the author's knowledge and experience
as of the date it was prepared;however,certain conditions may exist which only a comprehensive,
scientific,investigation might reveal which should be performed by other consulting professionals.
This report is specific to the identified client prepared for,as well as the unique identified site,the
address enclosed.Although some of the principles here discussed might appear to be applicable to
another site,tree,or situation,it is not possible to effectively carry any of these ideas across to another
scenario or site.Unless recommended by a TRAQ Certified Arborist.
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