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January 11, 2022
Leonid G.
lzgconstruction@gmail.com
Leonid:
Re: Tree Hazards-23830 Edmonds Way, Edmonds
At your request today I inspected three trees standing next to your apartment construction site in
Edmonds. The purpose of the inspection was to develop tree hazard risk ratings based on your
concerns and my observations of tree condition and the likelihood of failure.
Competence: My credentials include:
• Certified Arborist (International Society of Arboriculture, ISA #23136) (PN-0426A)
• Registered Consulting Arborist (American Society of Consulting Arborists #499).
• Tree Risk Assessment Qualified (ISA).
• Certified forester (Society of American Foresters #951)
• Bachelor of Science degree in Forest Management from the University of Washington
The trees were assessed for condition to the standards of the International Society of
Arboriculture (ISA) level 2 TRAQ assessment. (Tree Risk Assessment Qualified)
TRAQ Level 2 Assessment
• Locate and Identify Subject Trees
• Review Site History
• Assess Tree Health
• Record Observations: defects, vigor, site conditions
• Determine the likelihood of failure before and after site disturbance
activities
LRecommend Protection measures and Mitigation if appropriate
Suggest re -inspection levels
The trees are all Douglas -fir (Psuedotsuga menziesii). I measured each tree for diameter height,
live crown condition and crown size leading to assessments of condition and vigor.
11Page
LZG Construction Tree Assessment
From west
to east
Diameter
Height
Live
Crown
Dripline
Diameter
Condition
Hazard
Risk
1
35.5"
115'
60%
42'
Good
Moderate
2
40.1"
120'
70%
37'
Fair -poor*
High
3
31.8"
120'
80%
46'
Good
Moderate
*Twelve -inch structural root shattered at 14-feet from the tree but exposed at 4-feet. Butt swell
on tree indicates heartwood decay, possible velvet top fungus (Kretzschmaria deusta).
All three trees stand on the lip of a new 10-high cut bank. All have had roots cut but only tree
No. 2, the middle tree of the three has had a large structural root cut. The others have had
smaller roots cut, but should remain stable and viable. A concrete block wall will be
constructed at about 8-feet from the building and 10 feet or so from the trees.
Tree No. 2, has been structurally compromised by the large root loss. It has a pre-existing lower
bole or butt decay as evidenced by the lower bole swell. In my opinion this tree is a high -risk
hazard and should be removed.
In the event that you decide to remove either of these trees, the attached Hazard Tree Removal
Forms attached may be required by the City. The City may require replacement planting as well.
Let me know if you have further questions or comments,
Tom Hanson
Certified Arborist 23136
PN0426A
Tree Risk Assessment Qualified.
Encl. ISA Tree Hazard Risk Assessments
2 1 P a g e
LZG Construction Tree Assessment
3 1 P a g e