DNS BLD2021-0088+Tree_Evaluation+5.21.2021_8.15.41_PM+2211579RESU B BLD2021-0088
May 24 2021
.,
CITY OF EDMONDS
DEVEL PMENT SERVICES
WASHINGTON FORESTRY CONSULTANTS, ° %"4-_
FORESTRY AND VEGETATION MANAGEMENT SPECIALISTS
W F C I
360/943-1723 1919 Yelm Hwy SE, Suite C
FAX 360/943-4128 Olympia, WA 98501
August 5, 2020
Jenelle Taflin, P.E.
Navix Engineering
11235 SE 6' St. #150
Bellevue WA 98004
RE: CA Senior Housing Tree Evaluation
Dear Ms. Taflin:
We have evaluated all of the on -site, shared -ownership, and off -site trees of a proposed senior
Housing facility at 21200 72nd Ave. W. in Edmonds. The purpose was to determine the condition
of the trees and make recommendations for cultural care or removal. A field assessment was
conducted on July 29, 2020.
Findings and Recommendations
There are 18 trees at or near 21200 72nd Ave. W. These trees are a mix of native conifers and
planted ornamental trees. Species include Douglas -fir (Pseudotsuga menziesii), red maple (Acer
rubrum), Scotch pine (Pious sylvestris), and Norway maple (Acer platanoides). Tree size ranges
from 13 to 38 inches in diameter at breast height (DBH). Tre condition ranges from `Very Poor'
to `Good,' with half (50%) of the trees described as being in `Fair' condition or better.
Photo 1. View of Trees at 21200 72" Ave. E. in Edmonds. View looking south.
URBAN/RURAL FORESTRY • TREE APPRAISAL • HAZARD TREE ANALYSIS
RIGHT-OF-WAYS • VEGETATION MANAGEMENT • ENVIRONMENTAL STUDIES • CONTRACT FORESTERS
Member of International Society of Arboriculture and Society of American Foresters
RESUB
CA Senior Housing - Tree Evaluation May 24 2021
DEVELOPMENT SERVICES
DEPARTMENT
All 11 of the on -site trees are proposed for removal according to current demolition plans. These
trees are marked at the base with an orange painted number corresponding to Table 1 below.
Two (2) off -site trees and 5 shared -ownership trees may have to be retained because permission
to remove 6 of them has not yet been granted. Six (6) of these 7 trees are marked with blue
numbers. The locations of all trees are illustrated on the site survey in Attachment 2.
Table 1. Summary of Trees near 21200 72nd Ave. E. in Edmonds
Savable Based
Project
Minimum Root
Tree
DBH
on Tree
Plan?
Protection Zone if
#
Species
(in.)
Condition
Condition
Save or
Retained (ft.
Comment
Only?
Radius, Direction
Yes or No
Remove
to Grading
1
Douglas -fir
38
Good
Yes
Remove
N/A
2
Douglas -fir
28
Good
Yes
Remove
N/A
3
Red Maple
19
Fair
Yes
Remove
N/A
Some Dieback
4
Red Maple
16.5
Fair
Yes
Remove
N/A
5
Red Maple
13.5
Fair
Yes
Remove
N/A
6
Norway
21.5
Fair
Yes
Save
16N
Off -Site, Not
Maple
Numbered
Poor - Insect
7
Scotch Pine
13
Infested and
No
Save
8N
Off -Site
Diseased
Poor -
Codominant
Shared
8
Douglas -fir
18
Stems, `Tight
No
Save
12N
Ownership
V Crotch'
9
Douglas -fir
25
Poor - Topped
No
Save
18N
Shared
Ownership
10
Douglas -fir
17
Poor - Topped
No
Remove
N/A
11
Douglas -fir
13
Poor - Stem
No
Remove
N/A
Defect
12
Douglas -fir
17
Good
Yes
Remove
N/A
Very Poor -
Shared
13
Douglas -fir
21
Multiple Stem
No
Save
12N
Ownership
Defects
14
Douglas -fir
23.5
Fair - 3 tops
No
Remove
N/A
Shared
15
Douglas -fir
23.5
Poor - Topped
No
Save
12N
Ownership
Poor -
16
Douglas -fir
24
Topped, 4
No
Remove
N/A
new tops
17
Douglas -fir
15
Fair
Yes
Remove
N/A
Poor -
Shared
18
Douglas -fir
19.5
Topped, 3
No
Save
18N
Ownership
new tops
Washington Forestry Consultants, Inc. Page 2
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CA Senior Housing - Tree Evaluation May 24 2021
DEVELOPMENT SERVICES
DEPARTMENT
A row of I I Douglas -fir trees (#8 - #18) grows along the southern side of the project area. Most
of these trees are in `Poor' condition due to topping. Most of these trees have regrown poorly
attached multiple tops, that would be potentially hazardous to proposed site improvements. Stem
decay and multiple stem defects are also typical of trees in this area. Removing and replacing
these trees with the permission from the adjacent property owner would mitigate this potential
risk and provide the site with quality trees after completion of the project.
Photo 2. View of trees along southern side of CA Senior Housing project area looking east.
One additional off -site Scotch pine tree is infected with lophodermium needle cast
(Lophodermium seditiosum) fungus and sequoia pitch moth (Synanthedon sequoia). This tree
will likely die from these maladies within the next few years and should also be removed and
replaced with permission from the adjacent property owner. A nearby Norway maple is in `Fair'
condition and will need to be protected from the impacts of construction by placing 4 ft. tall
orange mesh tree protection fencing (Attachment 3) at the minimum root protection zone (RPZ)
distance described in Table 1.
In the event that the unhealthy off -site and shared -ownership trees must be retained, they will
also need to be protected with tree protection fencing at the RPZ distance described in Table 1.
There should be no equipment activity (including rototilling) within the RPZ. No irrigation lines,
trenches, or other utilities should be installed within the CRZ. Cuts or fills should impact no
more than 20% of a tree's root system. If topsoil is added to the root zone of a protected tree, the
depth should not exceed 2 inches of a sandy loam or loamy fine sand topsoil and should not
cover more than 20% of the root system.
If roots are encountered outside the RPZ during construction, they should be cut cleanly with a
saw and covered immediately with moist soil. If a proposed save -tree must be impacting by
grading or fills, then the tree should be re-evaluated by WFCI to determine if the tree can be
saved with mitigating measures, or if the tree should be removed.
Washington Forestry Consultants, Inc. Page 3
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CA Senior Housing - Tree Evaluation May 24 2021
DEVELOPMENT SERVICES
DEPARTMENT
Summary
Eleven (11) on -site trees at the proposed CA Senior Housing facility in Edmonds will be
removed during site clearing according to site plans. An additional off -site tree and 5 shared -
ownership trees should also be removed due to their poor health and multiple stem defects. If
removing these 6 trees is not possible, then they will need to be protected during construction
along with 1 healthy off -site tree.
Please give us a call if you have any questions.
Respectfully submitted,
Washington Forestry Consultants, Inc.
a-e"-"2 -XtA4
Galen M. Wright, ACF, AS Riley Stark, Professional Forester
ISA Bd. Certified Master Arborist PN-129BU ISA Bd. Certified Master Arborist
Certified Forester No. 44 Municipal Specialist, PN-7780BM
ISA Tree Risk Assessor Qualified ISA Tree Risk Assessor Qualified
ASCA Tree and Plant Appraisal Qualified
Washington Forestry Consultants, Inc. Page 4
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CA Senior Housing - Tree Evaluation May 24 2021
DEVELOPMENT SERVICES
DEPARTMENT
Attachment 1. Aerial Photo of 21200 72nd Ave. E. in Edmonds
(2018 Snohomish County Online Property Information)
— Property Boundary
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CA Senior Housing - Tree Evaluation May 24 2021
DEVELOPMENT SERVICES
DEPARTMENT
Attachment 2. Site Survey with Tree Locations Indicated
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Property Boundary
Tree Proposed for Removal
....... Location of Tree Protection Fencing
Washington Forestry Consultants, Inc. Page 6
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CA Senior Housing - Tree Evaluation May 24 2021
DEVELOPMENT SERVICES
DEPARTMENT
Attachment 3. Tree Protection Fence Detail
ANCHOR POSTS
BE MINIMUM
6' TALL
'T-BAR' FENCE
POSTS
—=�r.=-R_-�r-n-u=;��=�.:=n=��=n=ii=�i=n��=,�=,�=n-u=u-►:�=1r=�r=�r=-Ti=-1r_'n=.�._.
a USE 8' WIRE
FENCE BOTTOM
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- —OF
ANCHORPOSTS MUST BE INSTALLED
..DEPTH
THE TOTAL HEIGHT POST -
Orange Mesh Plastic on Driven Posts
THE TREE PROTECTION FENCE• • BE MAINTAINED THROUGHOUT
PROGRESS.THE CONSTRUCTION AND GRADING, AND NOT TO BE REMOVED UNTIL
FINAL LANDSCAPING IS IN • TIME SHALL EQUIPMENT
ENTER • THE ROOT. •ZONE (RPZ). ALL BRUSH CLEANUP
WITHIN THE RPZ SHOULD BE COMPLETED : • • PREVENT
DISTURBANCE • -• •• a- NO CUTS OR
TRENCHING, MODIFICATIONS TO DRAINAGE OR NCRETE RISE WATER
SHOULD - - •WIRES,•• OTHER DEVICES
SHOULD BE ATTACHED TO PROTECTED TREES DURING CONSTRUCTION.
IF IMPACTS MUST OCCUR WITHIN THE RPZ. CONTACT•.
TO THE OPERATIONS TO DETERMINE THE PROPER PROCEDURE
TO PROTECT THE TREE'S
Washington Forestry Consultants, Inc. Page 7
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CA Senior Housing - Tree Evaluation May 24 2021
DEVELOPMENT SERVICES
DEPARTMENT
Attachment 4. Assumptions and Limiting Conditions
1) Any legal description provided to the Washington Forestry Consultants, Inc. is assumed to be correct. Any
titles and ownership's to any property are assumed to be good and marketable. No responsibility is assumed
for matters legal in character. Any and all property is appraised or evaluated as though free and clear, under
responsible ownership and competent management.
2) It is assumed that any property is not in violation of any applicable codes, ordinances, statutes, or other
governmental regulations, unless otherwise stated.
3) Care has been taken to obtain all information from reliable sources. All data has been verified insofar as
possible; however, Washington Forestry Consultants, Inc. can neither guarantee nor be responsible for the
accuracy of information.
4) Washington Forestry Consultants, Inc. shall not be required to give testimony or to attend court by reason of
this report unless subsequent contractual arrangements are made, including payment of an additional fee for
such services as described in the fee schedule and contract of engagement.
5) Loss or alteration of any part of this report invalidated the entire report.
6) 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
Washington Forestry Consultants, Inc.
7) Neither all or any part of the contents of this report, nor copy thereof, shall be conveyed by anyone, including
the client, to the public through advertising, public relations, news, sales or other media, without the prior
expressed written or verbal consent of Washington Forestry Consultants, Inc. -- particularly as to value
conclusions, identity of Washington Forestry Consultants, Inc., or any reference to any professional society or
to any initialed designation conferred upon Washington Forestry Consultants, Inc. as stated in its
qualifications.
8) This report and any values expressed herein represent the opinion of Washington Forestry Consultants, Inc.,
and the fee is in no way contingent upon the reporting of a specified value, a stipulated result, the occurrence
neither of a subsequent event, nor upon any finding in to reported.
9) Sketches, diagrams, graphs, and photographs in this report, being intended as visual aids, are not necessarily
to scale and should not be construed as engineering or architectural reports or surveys.
10) Unless expressed otherwise: 1) information contained in this report covers only those items that were
examined and reflects the condition of those items at the time of inspection; and 2) the inspection is limited to
visual examination of accessible items without dissection, excavation, probing, or coring. There is no
warranty or guarantee, expressed or implied, that problems or deficiencies of the tree or other plant or
property in question may not arise in the future.
Note: Even healthy trees can fail under normal or storm conditions. The only way to eliminate all risk is to
remove all trees within reach of all targets. Annual monitoring by an ISA Certified Arborist or Certified Forester
will reduce the potential of tree failures. It is impossible to predict with certainty that a tree will stand or fail, or
the timing of the failure. It is considered an `Act of God' when a tree fails, unless it is directly felled or pushed
over by man's actions.
Washington Forestry Consultants, Inc. Page 8